1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Linux MegaRAID driver for SAS based RAID controllers
4 *
5 * Copyright (c) 2003-2013 LSI Corporation
6 * Copyright (c) 2013-2016 Avago Technologies
7 * Copyright (c) 2016-2018 Broadcom Inc.
8 *
9 * Authors: Broadcom Inc.
10 * Sreenivas Bagalkote
11 * Sumant Patro
12 * Bo Yang
13 * Adam Radford
14 * Kashyap Desai <kashyap.desai@broadcom.com>
15 * Sumit Saxena <sumit.saxena@broadcom.com>
16 *
17 * Send feedback to: megaraidlinux.pdl@broadcom.com
18 */
19
20 #include <linux/kernel.h>
21 #include <linux/types.h>
22 #include <linux/pci.h>
23 #include <linux/list.h>
24 #include <linux/moduleparam.h>
25 #include <linux/module.h>
26 #include <linux/spinlock.h>
27 #include <linux/interrupt.h>
28 #include <linux/delay.h>
29 #include <linux/uio.h>
30 #include <linux/slab.h>
31 #include <linux/uaccess.h>
32 #include <asm/unaligned.h>
33 #include <linux/fs.h>
34 #include <linux/compat.h>
35 #include <linux/blkdev.h>
36 #include <linux/mutex.h>
37 #include <linux/poll.h>
38 #include <linux/vmalloc.h>
39 #include <linux/irq_poll.h>
40 #include <linux/blk-mq-pci.h>
41
42 #include <scsi/scsi.h>
43 #include <scsi/scsi_cmnd.h>
44 #include <scsi/scsi_device.h>
45 #include <scsi/scsi_host.h>
46 #include <scsi/scsi_tcq.h>
47 #include <scsi/scsi_dbg.h>
48 #include "megaraid_sas_fusion.h"
49 #include "megaraid_sas.h"
50
51 /*
52 * Number of sectors per IO command
53 * Will be set in megasas_init_mfi if user does not provide
54 */
55 static unsigned int max_sectors;
56 module_param_named(max_sectors, max_sectors, int, 0444);
57 MODULE_PARM_DESC(max_sectors,
58 "Maximum number of sectors per IO command");
59
60 static int msix_disable;
61 module_param(msix_disable, int, 0444);
62 MODULE_PARM_DESC(msix_disable, "Disable MSI-X interrupt handling. Default: 0");
63
64 static unsigned int msix_vectors;
65 module_param(msix_vectors, int, 0444);
66 MODULE_PARM_DESC(msix_vectors, "MSI-X max vector count. Default: Set by FW");
67
68 static int allow_vf_ioctls;
69 module_param(allow_vf_ioctls, int, 0444);
70 MODULE_PARM_DESC(allow_vf_ioctls, "Allow ioctls in SR-IOV VF mode. Default: 0");
71
72 static unsigned int throttlequeuedepth = MEGASAS_THROTTLE_QUEUE_DEPTH;
73 module_param(throttlequeuedepth, int, 0444);
74 MODULE_PARM_DESC(throttlequeuedepth,
75 "Adapter queue depth when throttled due to I/O timeout. Default: 16");
76
77 unsigned int resetwaittime = MEGASAS_RESET_WAIT_TIME;
78 module_param(resetwaittime, int, 0444);
79 MODULE_PARM_DESC(resetwaittime, "Wait time in (1-180s) after I/O timeout before resetting adapter. Default: 180s");
80
81 static int smp_affinity_enable = 1;
82 module_param(smp_affinity_enable, int, 0444);
83 MODULE_PARM_DESC(smp_affinity_enable, "SMP affinity feature enable/disable Default: enable(1)");
84
85 static int rdpq_enable = 1;
86 module_param(rdpq_enable, int, 0444);
87 MODULE_PARM_DESC(rdpq_enable, "Allocate reply queue in chunks for large queue depth enable/disable Default: enable(1)");
88
89 unsigned int dual_qdepth_disable;
90 module_param(dual_qdepth_disable, int, 0444);
91 MODULE_PARM_DESC(dual_qdepth_disable, "Disable dual queue depth feature. Default: 0");
92
93 static unsigned int scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT;
94 module_param(scmd_timeout, int, 0444);
95 MODULE_PARM_DESC(scmd_timeout, "scsi command timeout (10-90s), default 90s. See megasas_reset_timer.");
96
97 int perf_mode = -1;
98 module_param(perf_mode, int, 0444);
99 MODULE_PARM_DESC(perf_mode, "Performance mode (only for Aero adapters), options:\n\t\t"
100 "0 - balanced: High iops and low latency queues are allocated &\n\t\t"
101 "interrupt coalescing is enabled only on high iops queues\n\t\t"
102 "1 - iops: High iops queues are not allocated &\n\t\t"
103 "interrupt coalescing is enabled on all queues\n\t\t"
104 "2 - latency: High iops queues are not allocated &\n\t\t"
105 "interrupt coalescing is disabled on all queues\n\t\t"
106 "default mode is 'balanced'"
107 );
108
109 int event_log_level = MFI_EVT_CLASS_CRITICAL;
110 module_param(event_log_level, int, 0644);
111 MODULE_PARM_DESC(event_log_level, "Asynchronous event logging level- range is: -2(CLASS_DEBUG) to 4(CLASS_DEAD), Default: 2(CLASS_CRITICAL)");
112
113 unsigned int enable_sdev_max_qd;
114 module_param(enable_sdev_max_qd, int, 0444);
115 MODULE_PARM_DESC(enable_sdev_max_qd, "Enable sdev max qd as can_queue. Default: 0");
116
117 int poll_queues;
118 module_param(poll_queues, int, 0444);
119 MODULE_PARM_DESC(poll_queues, "Number of queues to be use for io_uring poll mode.\n\t\t"
120 "This parameter is effective only if host_tagset_enable=1 &\n\t\t"
121 "It is not applicable for MFI_SERIES. &\n\t\t"
122 "Driver will work in latency mode. &\n\t\t"
123 "High iops queues are not allocated &\n\t\t"
124 );
125
126 int host_tagset_enable = 1;
127 module_param(host_tagset_enable, int, 0444);
128 MODULE_PARM_DESC(host_tagset_enable, "Shared host tagset enable/disable Default: enable(1)");
129
130 MODULE_LICENSE("GPL");
131 MODULE_VERSION(MEGASAS_VERSION);
132 MODULE_AUTHOR("megaraidlinux.pdl@broadcom.com");
133 MODULE_DESCRIPTION("Broadcom MegaRAID SAS Driver");
134
135 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
136 static int megasas_get_pd_list(struct megasas_instance *instance);
137 static int megasas_ld_list_query(struct megasas_instance *instance,
138 u8 query_type);
139 static int megasas_issue_init_mfi(struct megasas_instance *instance);
140 static int megasas_register_aen(struct megasas_instance *instance,
141 u32 seq_num, u32 class_locale_word);
142 static void megasas_get_pd_info(struct megasas_instance *instance,
143 struct scsi_device *sdev);
144 static void
145 megasas_set_ld_removed_by_fw(struct megasas_instance *instance);
146
147 /*
148 * PCI ID table for all supported controllers
149 */
150 static struct pci_device_id megasas_pci_table[] = {
151
152 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)},
153 /* xscale IOP */
154 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)},
155 /* ppc IOP */
156 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)},
157 /* ppc IOP */
158 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)},
159 /* gen2*/
160 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)},
161 /* gen2*/
162 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)},
163 /* skinny*/
164 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)},
165 /* skinny*/
166 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)},
167 /* xscale IOP, vega */
168 {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)},
169 /* xscale IOP */
170 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)},
171 /* Fusion */
172 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_PLASMA)},
173 /* Plasma */
174 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)},
175 /* Invader */
176 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FURY)},
177 /* Fury */
178 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER)},
179 /* Intruder */
180 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER_24)},
181 /* Intruder 24 port*/
182 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_52)},
183 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_53)},
184 /* VENTURA */
185 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VENTURA)},
186 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CRUSADER)},
187 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_HARPOON)},
188 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_TOMCAT)},
189 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VENTURA_4PORT)},
190 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CRUSADER_4PORT)},
191 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E1)},
192 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E2)},
193 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E5)},
194 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E6)},
195 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E0)},
196 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E3)},
197 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E4)},
198 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E7)},
199 {}
200 };
201
202 MODULE_DEVICE_TABLE(pci, megasas_pci_table);
203
204 static int megasas_mgmt_majorno;
205 struct megasas_mgmt_info megasas_mgmt_info;
206 static struct fasync_struct *megasas_async_queue;
207 static DEFINE_MUTEX(megasas_async_queue_mutex);
208
209 static int megasas_poll_wait_aen;
210 static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait);
211 static u32 support_poll_for_event;
212 u32 megasas_dbg_lvl;
213 static u32 support_device_change;
214 static bool support_nvme_encapsulation;
215 static bool support_pci_lane_margining;
216
217 /* define lock for aen poll */
218 static DEFINE_SPINLOCK(poll_aen_lock);
219
220 extern struct dentry *megasas_debugfs_root;
221 extern int megasas_blk_mq_poll(struct Scsi_Host *shost, unsigned int queue_num);
222
223 void
224 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
225 u8 alt_status);
226 static u32
227 megasas_read_fw_status_reg_gen2(struct megasas_instance *instance);
228 static int
229 megasas_adp_reset_gen2(struct megasas_instance *instance,
230 struct megasas_register_set __iomem *reg_set);
231 static irqreturn_t megasas_isr(int irq, void *devp);
232 static u32
233 megasas_init_adapter_mfi(struct megasas_instance *instance);
234 u32
235 megasas_build_and_issue_cmd(struct megasas_instance *instance,
236 struct scsi_cmnd *scmd);
237 static void megasas_complete_cmd_dpc(unsigned long instance_addr);
238 int
239 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
240 int seconds);
241 void megasas_fusion_ocr_wq(struct work_struct *work);
242 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
243 int initial);
244 static int
245 megasas_set_dma_mask(struct megasas_instance *instance);
246 static int
247 megasas_alloc_ctrl_mem(struct megasas_instance *instance);
248 static inline void
249 megasas_free_ctrl_mem(struct megasas_instance *instance);
250 static inline int
251 megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance);
252 static inline void
253 megasas_free_ctrl_dma_buffers(struct megasas_instance *instance);
254 static inline void
255 megasas_init_ctrl_params(struct megasas_instance *instance);
256
megasas_readl(struct megasas_instance * instance,const volatile void __iomem * addr)257 u32 megasas_readl(struct megasas_instance *instance,
258 const volatile void __iomem *addr)
259 {
260 u32 i = 0, ret_val;
261 /*
262 * Due to a HW errata in Aero controllers, reads to certain
263 * Fusion registers could intermittently return all zeroes.
264 * This behavior is transient in nature and subsequent reads will
265 * return valid value. As a workaround in driver, retry readl for
266 * upto three times until a non-zero value is read.
267 */
268 if (instance->adapter_type == AERO_SERIES) {
269 do {
270 ret_val = readl(addr);
271 i++;
272 } while (ret_val == 0 && i < 3);
273 return ret_val;
274 } else {
275 return readl(addr);
276 }
277 }
278
279 /**
280 * megasas_set_dma_settings - Populate DMA address, length and flags for DCMDs
281 * @instance: Adapter soft state
282 * @dcmd: DCMD frame inside MFI command
283 * @dma_addr: DMA address of buffer to be passed to FW
284 * @dma_len: Length of DMA buffer to be passed to FW
285 * @return: void
286 */
megasas_set_dma_settings(struct megasas_instance * instance,struct megasas_dcmd_frame * dcmd,dma_addr_t dma_addr,u32 dma_len)287 void megasas_set_dma_settings(struct megasas_instance *instance,
288 struct megasas_dcmd_frame *dcmd,
289 dma_addr_t dma_addr, u32 dma_len)
290 {
291 if (instance->consistent_mask_64bit) {
292 dcmd->sgl.sge64[0].phys_addr = cpu_to_le64(dma_addr);
293 dcmd->sgl.sge64[0].length = cpu_to_le32(dma_len);
294 dcmd->flags = cpu_to_le16(dcmd->flags | MFI_FRAME_SGL64);
295
296 } else {
297 dcmd->sgl.sge32[0].phys_addr =
298 cpu_to_le32(lower_32_bits(dma_addr));
299 dcmd->sgl.sge32[0].length = cpu_to_le32(dma_len);
300 dcmd->flags = cpu_to_le16(dcmd->flags);
301 }
302 }
303
304 static void
megasas_issue_dcmd(struct megasas_instance * instance,struct megasas_cmd * cmd)305 megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
306 {
307 instance->instancet->fire_cmd(instance,
308 cmd->frame_phys_addr, 0, instance->reg_set);
309 return;
310 }
311
312 /**
313 * megasas_get_cmd - Get a command from the free pool
314 * @instance: Adapter soft state
315 *
316 * Returns a free command from the pool
317 */
megasas_get_cmd(struct megasas_instance * instance)318 struct megasas_cmd *megasas_get_cmd(struct megasas_instance
319 *instance)
320 {
321 unsigned long flags;
322 struct megasas_cmd *cmd = NULL;
323
324 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
325
326 if (!list_empty(&instance->cmd_pool)) {
327 cmd = list_entry((&instance->cmd_pool)->next,
328 struct megasas_cmd, list);
329 list_del_init(&cmd->list);
330 } else {
331 dev_err(&instance->pdev->dev, "Command pool empty!\n");
332 }
333
334 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
335 return cmd;
336 }
337
338 /**
339 * megasas_return_cmd - Return a cmd to free command pool
340 * @instance: Adapter soft state
341 * @cmd: Command packet to be returned to free command pool
342 */
343 void
megasas_return_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd)344 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
345 {
346 unsigned long flags;
347 u32 blk_tags;
348 struct megasas_cmd_fusion *cmd_fusion;
349 struct fusion_context *fusion = instance->ctrl_context;
350
351 /* This flag is used only for fusion adapter.
352 * Wait for Interrupt for Polled mode DCMD
353 */
354 if (cmd->flags & DRV_DCMD_POLLED_MODE)
355 return;
356
357 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
358
359 if (fusion) {
360 blk_tags = instance->max_scsi_cmds + cmd->index;
361 cmd_fusion = fusion->cmd_list[blk_tags];
362 megasas_return_cmd_fusion(instance, cmd_fusion);
363 }
364 cmd->scmd = NULL;
365 cmd->frame_count = 0;
366 cmd->flags = 0;
367 memset(cmd->frame, 0, instance->mfi_frame_size);
368 cmd->frame->io.context = cpu_to_le32(cmd->index);
369 if (!fusion && reset_devices)
370 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
371 list_add(&cmd->list, (&instance->cmd_pool)->next);
372
373 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
374
375 }
376
377 static const char *
format_timestamp(uint32_t timestamp)378 format_timestamp(uint32_t timestamp)
379 {
380 static char buffer[32];
381
382 if ((timestamp & 0xff000000) == 0xff000000)
383 snprintf(buffer, sizeof(buffer), "boot + %us", timestamp &
384 0x00ffffff);
385 else
386 snprintf(buffer, sizeof(buffer), "%us", timestamp);
387 return buffer;
388 }
389
390 static const char *
format_class(int8_t class)391 format_class(int8_t class)
392 {
393 static char buffer[6];
394
395 switch (class) {
396 case MFI_EVT_CLASS_DEBUG:
397 return "debug";
398 case MFI_EVT_CLASS_PROGRESS:
399 return "progress";
400 case MFI_EVT_CLASS_INFO:
401 return "info";
402 case MFI_EVT_CLASS_WARNING:
403 return "WARN";
404 case MFI_EVT_CLASS_CRITICAL:
405 return "CRIT";
406 case MFI_EVT_CLASS_FATAL:
407 return "FATAL";
408 case MFI_EVT_CLASS_DEAD:
409 return "DEAD";
410 default:
411 snprintf(buffer, sizeof(buffer), "%d", class);
412 return buffer;
413 }
414 }
415
416 /**
417 * megasas_decode_evt: Decode FW AEN event and print critical event
418 * for information.
419 * @instance: Adapter soft state
420 */
421 static void
megasas_decode_evt(struct megasas_instance * instance)422 megasas_decode_evt(struct megasas_instance *instance)
423 {
424 struct megasas_evt_detail *evt_detail = instance->evt_detail;
425 union megasas_evt_class_locale class_locale;
426 class_locale.word = le32_to_cpu(evt_detail->cl.word);
427
428 if ((event_log_level < MFI_EVT_CLASS_DEBUG) ||
429 (event_log_level > MFI_EVT_CLASS_DEAD)) {
430 printk(KERN_WARNING "megaraid_sas: provided event log level is out of range, setting it to default 2(CLASS_CRITICAL), permissible range is: -2 to 4\n");
431 event_log_level = MFI_EVT_CLASS_CRITICAL;
432 }
433
434 if (class_locale.members.class >= event_log_level)
435 dev_info(&instance->pdev->dev, "%d (%s/0x%04x/%s) - %s\n",
436 le32_to_cpu(evt_detail->seq_num),
437 format_timestamp(le32_to_cpu(evt_detail->time_stamp)),
438 (class_locale.members.locale),
439 format_class(class_locale.members.class),
440 evt_detail->description);
441
442 if (megasas_dbg_lvl & LD_PD_DEBUG)
443 dev_info(&instance->pdev->dev,
444 "evt_detail.args.ld.target_id/index %d/%d\n",
445 evt_detail->args.ld.target_id, evt_detail->args.ld.ld_index);
446
447 }
448
449 /*
450 * The following functions are defined for xscale
451 * (deviceid : 1064R, PERC5) controllers
452 */
453
454 /**
455 * megasas_enable_intr_xscale - Enables interrupts
456 * @instance: Adapter soft state
457 */
458 static inline void
megasas_enable_intr_xscale(struct megasas_instance * instance)459 megasas_enable_intr_xscale(struct megasas_instance *instance)
460 {
461 struct megasas_register_set __iomem *regs;
462
463 regs = instance->reg_set;
464 writel(0, &(regs)->outbound_intr_mask);
465
466 /* Dummy readl to force pci flush */
467 readl(®s->outbound_intr_mask);
468 }
469
470 /**
471 * megasas_disable_intr_xscale -Disables interrupt
472 * @instance: Adapter soft state
473 */
474 static inline void
megasas_disable_intr_xscale(struct megasas_instance * instance)475 megasas_disable_intr_xscale(struct megasas_instance *instance)
476 {
477 struct megasas_register_set __iomem *regs;
478 u32 mask = 0x1f;
479
480 regs = instance->reg_set;
481 writel(mask, ®s->outbound_intr_mask);
482 /* Dummy readl to force pci flush */
483 readl(®s->outbound_intr_mask);
484 }
485
486 /**
487 * megasas_read_fw_status_reg_xscale - returns the current FW status value
488 * @instance: Adapter soft state
489 */
490 static u32
megasas_read_fw_status_reg_xscale(struct megasas_instance * instance)491 megasas_read_fw_status_reg_xscale(struct megasas_instance *instance)
492 {
493 return readl(&instance->reg_set->outbound_msg_0);
494 }
495 /**
496 * megasas_clear_intr_xscale - Check & clear interrupt
497 * @instance: Adapter soft state
498 */
499 static int
megasas_clear_intr_xscale(struct megasas_instance * instance)500 megasas_clear_intr_xscale(struct megasas_instance *instance)
501 {
502 u32 status;
503 u32 mfiStatus = 0;
504 struct megasas_register_set __iomem *regs;
505 regs = instance->reg_set;
506
507 /*
508 * Check if it is our interrupt
509 */
510 status = readl(®s->outbound_intr_status);
511
512 if (status & MFI_OB_INTR_STATUS_MASK)
513 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
514 if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT)
515 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
516
517 /*
518 * Clear the interrupt by writing back the same value
519 */
520 if (mfiStatus)
521 writel(status, ®s->outbound_intr_status);
522
523 /* Dummy readl to force pci flush */
524 readl(®s->outbound_intr_status);
525
526 return mfiStatus;
527 }
528
529 /**
530 * megasas_fire_cmd_xscale - Sends command to the FW
531 * @instance: Adapter soft state
532 * @frame_phys_addr : Physical address of cmd
533 * @frame_count : Number of frames for the command
534 * @regs : MFI register set
535 */
536 static inline void
megasas_fire_cmd_xscale(struct megasas_instance * instance,dma_addr_t frame_phys_addr,u32 frame_count,struct megasas_register_set __iomem * regs)537 megasas_fire_cmd_xscale(struct megasas_instance *instance,
538 dma_addr_t frame_phys_addr,
539 u32 frame_count,
540 struct megasas_register_set __iomem *regs)
541 {
542 unsigned long flags;
543
544 spin_lock_irqsave(&instance->hba_lock, flags);
545 writel((frame_phys_addr >> 3)|(frame_count),
546 &(regs)->inbound_queue_port);
547 spin_unlock_irqrestore(&instance->hba_lock, flags);
548 }
549
550 /**
551 * megasas_adp_reset_xscale - For controller reset
552 * @instance: Adapter soft state
553 * @regs: MFI register set
554 */
555 static int
megasas_adp_reset_xscale(struct megasas_instance * instance,struct megasas_register_set __iomem * regs)556 megasas_adp_reset_xscale(struct megasas_instance *instance,
557 struct megasas_register_set __iomem *regs)
558 {
559 u32 i;
560 u32 pcidata;
561
562 writel(MFI_ADP_RESET, ®s->inbound_doorbell);
563
564 for (i = 0; i < 3; i++)
565 msleep(1000); /* sleep for 3 secs */
566 pcidata = 0;
567 pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata);
568 dev_notice(&instance->pdev->dev, "pcidata = %x\n", pcidata);
569 if (pcidata & 0x2) {
570 dev_notice(&instance->pdev->dev, "mfi 1068 offset read=%x\n", pcidata);
571 pcidata &= ~0x2;
572 pci_write_config_dword(instance->pdev,
573 MFI_1068_PCSR_OFFSET, pcidata);
574
575 for (i = 0; i < 2; i++)
576 msleep(1000); /* need to wait 2 secs again */
577
578 pcidata = 0;
579 pci_read_config_dword(instance->pdev,
580 MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata);
581 dev_notice(&instance->pdev->dev, "1068 offset handshake read=%x\n", pcidata);
582 if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) {
583 dev_notice(&instance->pdev->dev, "1068 offset pcidt=%x\n", pcidata);
584 pcidata = 0;
585 pci_write_config_dword(instance->pdev,
586 MFI_1068_FW_HANDSHAKE_OFFSET, pcidata);
587 }
588 }
589 return 0;
590 }
591
592 /**
593 * megasas_check_reset_xscale - For controller reset check
594 * @instance: Adapter soft state
595 * @regs: MFI register set
596 */
597 static int
megasas_check_reset_xscale(struct megasas_instance * instance,struct megasas_register_set __iomem * regs)598 megasas_check_reset_xscale(struct megasas_instance *instance,
599 struct megasas_register_set __iomem *regs)
600 {
601 if ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) &&
602 (le32_to_cpu(*instance->consumer) ==
603 MEGASAS_ADPRESET_INPROG_SIGN))
604 return 1;
605 return 0;
606 }
607
608 static struct megasas_instance_template megasas_instance_template_xscale = {
609
610 .fire_cmd = megasas_fire_cmd_xscale,
611 .enable_intr = megasas_enable_intr_xscale,
612 .disable_intr = megasas_disable_intr_xscale,
613 .clear_intr = megasas_clear_intr_xscale,
614 .read_fw_status_reg = megasas_read_fw_status_reg_xscale,
615 .adp_reset = megasas_adp_reset_xscale,
616 .check_reset = megasas_check_reset_xscale,
617 .service_isr = megasas_isr,
618 .tasklet = megasas_complete_cmd_dpc,
619 .init_adapter = megasas_init_adapter_mfi,
620 .build_and_issue_cmd = megasas_build_and_issue_cmd,
621 .issue_dcmd = megasas_issue_dcmd,
622 };
623
624 /*
625 * This is the end of set of functions & definitions specific
626 * to xscale (deviceid : 1064R, PERC5) controllers
627 */
628
629 /*
630 * The following functions are defined for ppc (deviceid : 0x60)
631 * controllers
632 */
633
634 /**
635 * megasas_enable_intr_ppc - Enables interrupts
636 * @instance: Adapter soft state
637 */
638 static inline void
megasas_enable_intr_ppc(struct megasas_instance * instance)639 megasas_enable_intr_ppc(struct megasas_instance *instance)
640 {
641 struct megasas_register_set __iomem *regs;
642
643 regs = instance->reg_set;
644 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
645
646 writel(~0x80000000, &(regs)->outbound_intr_mask);
647
648 /* Dummy readl to force pci flush */
649 readl(®s->outbound_intr_mask);
650 }
651
652 /**
653 * megasas_disable_intr_ppc - Disable interrupt
654 * @instance: Adapter soft state
655 */
656 static inline void
megasas_disable_intr_ppc(struct megasas_instance * instance)657 megasas_disable_intr_ppc(struct megasas_instance *instance)
658 {
659 struct megasas_register_set __iomem *regs;
660 u32 mask = 0xFFFFFFFF;
661
662 regs = instance->reg_set;
663 writel(mask, ®s->outbound_intr_mask);
664 /* Dummy readl to force pci flush */
665 readl(®s->outbound_intr_mask);
666 }
667
668 /**
669 * megasas_read_fw_status_reg_ppc - returns the current FW status value
670 * @instance: Adapter soft state
671 */
672 static u32
megasas_read_fw_status_reg_ppc(struct megasas_instance * instance)673 megasas_read_fw_status_reg_ppc(struct megasas_instance *instance)
674 {
675 return readl(&instance->reg_set->outbound_scratch_pad_0);
676 }
677
678 /**
679 * megasas_clear_intr_ppc - Check & clear interrupt
680 * @instance: Adapter soft state
681 */
682 static int
megasas_clear_intr_ppc(struct megasas_instance * instance)683 megasas_clear_intr_ppc(struct megasas_instance *instance)
684 {
685 u32 status, mfiStatus = 0;
686 struct megasas_register_set __iomem *regs;
687 regs = instance->reg_set;
688
689 /*
690 * Check if it is our interrupt
691 */
692 status = readl(®s->outbound_intr_status);
693
694 if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT)
695 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
696
697 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT)
698 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
699
700 /*
701 * Clear the interrupt by writing back the same value
702 */
703 writel(status, ®s->outbound_doorbell_clear);
704
705 /* Dummy readl to force pci flush */
706 readl(®s->outbound_doorbell_clear);
707
708 return mfiStatus;
709 }
710
711 /**
712 * megasas_fire_cmd_ppc - Sends command to the FW
713 * @instance: Adapter soft state
714 * @frame_phys_addr: Physical address of cmd
715 * @frame_count: Number of frames for the command
716 * @regs: MFI register set
717 */
718 static inline void
megasas_fire_cmd_ppc(struct megasas_instance * instance,dma_addr_t frame_phys_addr,u32 frame_count,struct megasas_register_set __iomem * regs)719 megasas_fire_cmd_ppc(struct megasas_instance *instance,
720 dma_addr_t frame_phys_addr,
721 u32 frame_count,
722 struct megasas_register_set __iomem *regs)
723 {
724 unsigned long flags;
725
726 spin_lock_irqsave(&instance->hba_lock, flags);
727 writel((frame_phys_addr | (frame_count<<1))|1,
728 &(regs)->inbound_queue_port);
729 spin_unlock_irqrestore(&instance->hba_lock, flags);
730 }
731
732 /**
733 * megasas_check_reset_ppc - For controller reset check
734 * @instance: Adapter soft state
735 * @regs: MFI register set
736 */
737 static int
megasas_check_reset_ppc(struct megasas_instance * instance,struct megasas_register_set __iomem * regs)738 megasas_check_reset_ppc(struct megasas_instance *instance,
739 struct megasas_register_set __iomem *regs)
740 {
741 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
742 return 1;
743
744 return 0;
745 }
746
747 static struct megasas_instance_template megasas_instance_template_ppc = {
748
749 .fire_cmd = megasas_fire_cmd_ppc,
750 .enable_intr = megasas_enable_intr_ppc,
751 .disable_intr = megasas_disable_intr_ppc,
752 .clear_intr = megasas_clear_intr_ppc,
753 .read_fw_status_reg = megasas_read_fw_status_reg_ppc,
754 .adp_reset = megasas_adp_reset_xscale,
755 .check_reset = megasas_check_reset_ppc,
756 .service_isr = megasas_isr,
757 .tasklet = megasas_complete_cmd_dpc,
758 .init_adapter = megasas_init_adapter_mfi,
759 .build_and_issue_cmd = megasas_build_and_issue_cmd,
760 .issue_dcmd = megasas_issue_dcmd,
761 };
762
763 /**
764 * megasas_enable_intr_skinny - Enables interrupts
765 * @instance: Adapter soft state
766 */
767 static inline void
megasas_enable_intr_skinny(struct megasas_instance * instance)768 megasas_enable_intr_skinny(struct megasas_instance *instance)
769 {
770 struct megasas_register_set __iomem *regs;
771
772 regs = instance->reg_set;
773 writel(0xFFFFFFFF, &(regs)->outbound_intr_mask);
774
775 writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
776
777 /* Dummy readl to force pci flush */
778 readl(®s->outbound_intr_mask);
779 }
780
781 /**
782 * megasas_disable_intr_skinny - Disables interrupt
783 * @instance: Adapter soft state
784 */
785 static inline void
megasas_disable_intr_skinny(struct megasas_instance * instance)786 megasas_disable_intr_skinny(struct megasas_instance *instance)
787 {
788 struct megasas_register_set __iomem *regs;
789 u32 mask = 0xFFFFFFFF;
790
791 regs = instance->reg_set;
792 writel(mask, ®s->outbound_intr_mask);
793 /* Dummy readl to force pci flush */
794 readl(®s->outbound_intr_mask);
795 }
796
797 /**
798 * megasas_read_fw_status_reg_skinny - returns the current FW status value
799 * @instance: Adapter soft state
800 */
801 static u32
megasas_read_fw_status_reg_skinny(struct megasas_instance * instance)802 megasas_read_fw_status_reg_skinny(struct megasas_instance *instance)
803 {
804 return readl(&instance->reg_set->outbound_scratch_pad_0);
805 }
806
807 /**
808 * megasas_clear_intr_skinny - Check & clear interrupt
809 * @instance: Adapter soft state
810 */
811 static int
megasas_clear_intr_skinny(struct megasas_instance * instance)812 megasas_clear_intr_skinny(struct megasas_instance *instance)
813 {
814 u32 status;
815 u32 mfiStatus = 0;
816 struct megasas_register_set __iomem *regs;
817 regs = instance->reg_set;
818
819 /*
820 * Check if it is our interrupt
821 */
822 status = readl(®s->outbound_intr_status);
823
824 if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) {
825 return 0;
826 }
827
828 /*
829 * Check if it is our interrupt
830 */
831 if ((megasas_read_fw_status_reg_skinny(instance) & MFI_STATE_MASK) ==
832 MFI_STATE_FAULT) {
833 mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
834 } else
835 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
836
837 /*
838 * Clear the interrupt by writing back the same value
839 */
840 writel(status, ®s->outbound_intr_status);
841
842 /*
843 * dummy read to flush PCI
844 */
845 readl(®s->outbound_intr_status);
846
847 return mfiStatus;
848 }
849
850 /**
851 * megasas_fire_cmd_skinny - Sends command to the FW
852 * @instance: Adapter soft state
853 * @frame_phys_addr: Physical address of cmd
854 * @frame_count: Number of frames for the command
855 * @regs: MFI register set
856 */
857 static inline void
megasas_fire_cmd_skinny(struct megasas_instance * instance,dma_addr_t frame_phys_addr,u32 frame_count,struct megasas_register_set __iomem * regs)858 megasas_fire_cmd_skinny(struct megasas_instance *instance,
859 dma_addr_t frame_phys_addr,
860 u32 frame_count,
861 struct megasas_register_set __iomem *regs)
862 {
863 unsigned long flags;
864
865 spin_lock_irqsave(&instance->hba_lock, flags);
866 writel(upper_32_bits(frame_phys_addr),
867 &(regs)->inbound_high_queue_port);
868 writel((lower_32_bits(frame_phys_addr) | (frame_count<<1))|1,
869 &(regs)->inbound_low_queue_port);
870 spin_unlock_irqrestore(&instance->hba_lock, flags);
871 }
872
873 /**
874 * megasas_check_reset_skinny - For controller reset check
875 * @instance: Adapter soft state
876 * @regs: MFI register set
877 */
878 static int
megasas_check_reset_skinny(struct megasas_instance * instance,struct megasas_register_set __iomem * regs)879 megasas_check_reset_skinny(struct megasas_instance *instance,
880 struct megasas_register_set __iomem *regs)
881 {
882 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
883 return 1;
884
885 return 0;
886 }
887
888 static struct megasas_instance_template megasas_instance_template_skinny = {
889
890 .fire_cmd = megasas_fire_cmd_skinny,
891 .enable_intr = megasas_enable_intr_skinny,
892 .disable_intr = megasas_disable_intr_skinny,
893 .clear_intr = megasas_clear_intr_skinny,
894 .read_fw_status_reg = megasas_read_fw_status_reg_skinny,
895 .adp_reset = megasas_adp_reset_gen2,
896 .check_reset = megasas_check_reset_skinny,
897 .service_isr = megasas_isr,
898 .tasklet = megasas_complete_cmd_dpc,
899 .init_adapter = megasas_init_adapter_mfi,
900 .build_and_issue_cmd = megasas_build_and_issue_cmd,
901 .issue_dcmd = megasas_issue_dcmd,
902 };
903
904
905 /*
906 * The following functions are defined for gen2 (deviceid : 0x78 0x79)
907 * controllers
908 */
909
910 /**
911 * megasas_enable_intr_gen2 - Enables interrupts
912 * @instance: Adapter soft state
913 */
914 static inline void
megasas_enable_intr_gen2(struct megasas_instance * instance)915 megasas_enable_intr_gen2(struct megasas_instance *instance)
916 {
917 struct megasas_register_set __iomem *regs;
918
919 regs = instance->reg_set;
920 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
921
922 /* write ~0x00000005 (4 & 1) to the intr mask*/
923 writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
924
925 /* Dummy readl to force pci flush */
926 readl(®s->outbound_intr_mask);
927 }
928
929 /**
930 * megasas_disable_intr_gen2 - Disables interrupt
931 * @instance: Adapter soft state
932 */
933 static inline void
megasas_disable_intr_gen2(struct megasas_instance * instance)934 megasas_disable_intr_gen2(struct megasas_instance *instance)
935 {
936 struct megasas_register_set __iomem *regs;
937 u32 mask = 0xFFFFFFFF;
938
939 regs = instance->reg_set;
940 writel(mask, ®s->outbound_intr_mask);
941 /* Dummy readl to force pci flush */
942 readl(®s->outbound_intr_mask);
943 }
944
945 /**
946 * megasas_read_fw_status_reg_gen2 - returns the current FW status value
947 * @instance: Adapter soft state
948 */
949 static u32
megasas_read_fw_status_reg_gen2(struct megasas_instance * instance)950 megasas_read_fw_status_reg_gen2(struct megasas_instance *instance)
951 {
952 return readl(&instance->reg_set->outbound_scratch_pad_0);
953 }
954
955 /**
956 * megasas_clear_intr_gen2 - Check & clear interrupt
957 * @instance: Adapter soft state
958 */
959 static int
megasas_clear_intr_gen2(struct megasas_instance * instance)960 megasas_clear_intr_gen2(struct megasas_instance *instance)
961 {
962 u32 status;
963 u32 mfiStatus = 0;
964 struct megasas_register_set __iomem *regs;
965 regs = instance->reg_set;
966
967 /*
968 * Check if it is our interrupt
969 */
970 status = readl(®s->outbound_intr_status);
971
972 if (status & MFI_INTR_FLAG_REPLY_MESSAGE) {
973 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
974 }
975 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) {
976 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
977 }
978
979 /*
980 * Clear the interrupt by writing back the same value
981 */
982 if (mfiStatus)
983 writel(status, ®s->outbound_doorbell_clear);
984
985 /* Dummy readl to force pci flush */
986 readl(®s->outbound_intr_status);
987
988 return mfiStatus;
989 }
990
991 /**
992 * megasas_fire_cmd_gen2 - Sends command to the FW
993 * @instance: Adapter soft state
994 * @frame_phys_addr: Physical address of cmd
995 * @frame_count: Number of frames for the command
996 * @regs: MFI register set
997 */
998 static inline void
megasas_fire_cmd_gen2(struct megasas_instance * instance,dma_addr_t frame_phys_addr,u32 frame_count,struct megasas_register_set __iomem * regs)999 megasas_fire_cmd_gen2(struct megasas_instance *instance,
1000 dma_addr_t frame_phys_addr,
1001 u32 frame_count,
1002 struct megasas_register_set __iomem *regs)
1003 {
1004 unsigned long flags;
1005
1006 spin_lock_irqsave(&instance->hba_lock, flags);
1007 writel((frame_phys_addr | (frame_count<<1))|1,
1008 &(regs)->inbound_queue_port);
1009 spin_unlock_irqrestore(&instance->hba_lock, flags);
1010 }
1011
1012 /**
1013 * megasas_adp_reset_gen2 - For controller reset
1014 * @instance: Adapter soft state
1015 * @reg_set: MFI register set
1016 */
1017 static int
megasas_adp_reset_gen2(struct megasas_instance * instance,struct megasas_register_set __iomem * reg_set)1018 megasas_adp_reset_gen2(struct megasas_instance *instance,
1019 struct megasas_register_set __iomem *reg_set)
1020 {
1021 u32 retry = 0 ;
1022 u32 HostDiag;
1023 u32 __iomem *seq_offset = ®_set->seq_offset;
1024 u32 __iomem *hostdiag_offset = ®_set->host_diag;
1025
1026 if (instance->instancet == &megasas_instance_template_skinny) {
1027 seq_offset = ®_set->fusion_seq_offset;
1028 hostdiag_offset = ®_set->fusion_host_diag;
1029 }
1030
1031 writel(0, seq_offset);
1032 writel(4, seq_offset);
1033 writel(0xb, seq_offset);
1034 writel(2, seq_offset);
1035 writel(7, seq_offset);
1036 writel(0xd, seq_offset);
1037
1038 msleep(1000);
1039
1040 HostDiag = (u32)readl(hostdiag_offset);
1041
1042 while (!(HostDiag & DIAG_WRITE_ENABLE)) {
1043 msleep(100);
1044 HostDiag = (u32)readl(hostdiag_offset);
1045 dev_notice(&instance->pdev->dev, "RESETGEN2: retry=%x, hostdiag=%x\n",
1046 retry, HostDiag);
1047
1048 if (retry++ >= 100)
1049 return 1;
1050
1051 }
1052
1053 dev_notice(&instance->pdev->dev, "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag);
1054
1055 writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset);
1056
1057 ssleep(10);
1058
1059 HostDiag = (u32)readl(hostdiag_offset);
1060 while (HostDiag & DIAG_RESET_ADAPTER) {
1061 msleep(100);
1062 HostDiag = (u32)readl(hostdiag_offset);
1063 dev_notice(&instance->pdev->dev, "RESET_GEN2: retry=%x, hostdiag=%x\n",
1064 retry, HostDiag);
1065
1066 if (retry++ >= 1000)
1067 return 1;
1068
1069 }
1070 return 0;
1071 }
1072
1073 /**
1074 * megasas_check_reset_gen2 - For controller reset check
1075 * @instance: Adapter soft state
1076 * @regs: MFI register set
1077 */
1078 static int
megasas_check_reset_gen2(struct megasas_instance * instance,struct megasas_register_set __iomem * regs)1079 megasas_check_reset_gen2(struct megasas_instance *instance,
1080 struct megasas_register_set __iomem *regs)
1081 {
1082 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
1083 return 1;
1084
1085 return 0;
1086 }
1087
1088 static struct megasas_instance_template megasas_instance_template_gen2 = {
1089
1090 .fire_cmd = megasas_fire_cmd_gen2,
1091 .enable_intr = megasas_enable_intr_gen2,
1092 .disable_intr = megasas_disable_intr_gen2,
1093 .clear_intr = megasas_clear_intr_gen2,
1094 .read_fw_status_reg = megasas_read_fw_status_reg_gen2,
1095 .adp_reset = megasas_adp_reset_gen2,
1096 .check_reset = megasas_check_reset_gen2,
1097 .service_isr = megasas_isr,
1098 .tasklet = megasas_complete_cmd_dpc,
1099 .init_adapter = megasas_init_adapter_mfi,
1100 .build_and_issue_cmd = megasas_build_and_issue_cmd,
1101 .issue_dcmd = megasas_issue_dcmd,
1102 };
1103
1104 /*
1105 * This is the end of set of functions & definitions
1106 * specific to gen2 (deviceid : 0x78, 0x79) controllers
1107 */
1108
1109 /*
1110 * Template added for TB (Fusion)
1111 */
1112 extern struct megasas_instance_template megasas_instance_template_fusion;
1113
1114 /**
1115 * megasas_issue_polled - Issues a polling command
1116 * @instance: Adapter soft state
1117 * @cmd: Command packet to be issued
1118 *
1119 * For polling, MFI requires the cmd_status to be set to MFI_STAT_INVALID_STATUS before posting.
1120 */
1121 int
megasas_issue_polled(struct megasas_instance * instance,struct megasas_cmd * cmd)1122 megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd)
1123 {
1124 struct megasas_header *frame_hdr = &cmd->frame->hdr;
1125
1126 frame_hdr->cmd_status = MFI_STAT_INVALID_STATUS;
1127 frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
1128
1129 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1130 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1131 __func__, __LINE__);
1132 return DCMD_INIT;
1133 }
1134
1135 instance->instancet->issue_dcmd(instance, cmd);
1136
1137 return wait_and_poll(instance, cmd, instance->requestorId ?
1138 MEGASAS_ROUTINE_WAIT_TIME_VF : MFI_IO_TIMEOUT_SECS);
1139 }
1140
1141 /**
1142 * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds
1143 * @instance: Adapter soft state
1144 * @cmd: Command to be issued
1145 * @timeout: Timeout in seconds
1146 *
1147 * This function waits on an event for the command to be returned from ISR.
1148 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
1149 * Used to issue ioctl commands.
1150 */
1151 int
megasas_issue_blocked_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd,int timeout)1152 megasas_issue_blocked_cmd(struct megasas_instance *instance,
1153 struct megasas_cmd *cmd, int timeout)
1154 {
1155 int ret = 0;
1156 cmd->cmd_status_drv = DCMD_INIT;
1157
1158 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1159 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1160 __func__, __LINE__);
1161 return DCMD_INIT;
1162 }
1163
1164 instance->instancet->issue_dcmd(instance, cmd);
1165
1166 if (timeout) {
1167 ret = wait_event_timeout(instance->int_cmd_wait_q,
1168 cmd->cmd_status_drv != DCMD_INIT, timeout * HZ);
1169 if (!ret) {
1170 dev_err(&instance->pdev->dev,
1171 "DCMD(opcode: 0x%x) is timed out, func:%s\n",
1172 cmd->frame->dcmd.opcode, __func__);
1173 return DCMD_TIMEOUT;
1174 }
1175 } else
1176 wait_event(instance->int_cmd_wait_q,
1177 cmd->cmd_status_drv != DCMD_INIT);
1178
1179 return cmd->cmd_status_drv;
1180 }
1181
1182 /**
1183 * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd
1184 * @instance: Adapter soft state
1185 * @cmd_to_abort: Previously issued cmd to be aborted
1186 * @timeout: Timeout in seconds
1187 *
1188 * MFI firmware can abort previously issued AEN comamnd (automatic event
1189 * notification). The megasas_issue_blocked_abort_cmd() issues such abort
1190 * cmd and waits for return status.
1191 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
1192 */
1193 static int
megasas_issue_blocked_abort_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd_to_abort,int timeout)1194 megasas_issue_blocked_abort_cmd(struct megasas_instance *instance,
1195 struct megasas_cmd *cmd_to_abort, int timeout)
1196 {
1197 struct megasas_cmd *cmd;
1198 struct megasas_abort_frame *abort_fr;
1199 int ret = 0;
1200 u32 opcode;
1201
1202 cmd = megasas_get_cmd(instance);
1203
1204 if (!cmd)
1205 return -1;
1206
1207 abort_fr = &cmd->frame->abort;
1208
1209 /*
1210 * Prepare and issue the abort frame
1211 */
1212 abort_fr->cmd = MFI_CMD_ABORT;
1213 abort_fr->cmd_status = MFI_STAT_INVALID_STATUS;
1214 abort_fr->flags = cpu_to_le16(0);
1215 abort_fr->abort_context = cpu_to_le32(cmd_to_abort->index);
1216 abort_fr->abort_mfi_phys_addr_lo =
1217 cpu_to_le32(lower_32_bits(cmd_to_abort->frame_phys_addr));
1218 abort_fr->abort_mfi_phys_addr_hi =
1219 cpu_to_le32(upper_32_bits(cmd_to_abort->frame_phys_addr));
1220
1221 cmd->sync_cmd = 1;
1222 cmd->cmd_status_drv = DCMD_INIT;
1223
1224 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1225 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1226 __func__, __LINE__);
1227 return DCMD_INIT;
1228 }
1229
1230 instance->instancet->issue_dcmd(instance, cmd);
1231
1232 if (timeout) {
1233 ret = wait_event_timeout(instance->abort_cmd_wait_q,
1234 cmd->cmd_status_drv != DCMD_INIT, timeout * HZ);
1235 if (!ret) {
1236 opcode = cmd_to_abort->frame->dcmd.opcode;
1237 dev_err(&instance->pdev->dev,
1238 "Abort(to be aborted DCMD opcode: 0x%x) is timed out func:%s\n",
1239 opcode, __func__);
1240 return DCMD_TIMEOUT;
1241 }
1242 } else
1243 wait_event(instance->abort_cmd_wait_q,
1244 cmd->cmd_status_drv != DCMD_INIT);
1245
1246 cmd->sync_cmd = 0;
1247
1248 megasas_return_cmd(instance, cmd);
1249 return cmd->cmd_status_drv;
1250 }
1251
1252 /**
1253 * megasas_make_sgl32 - Prepares 32-bit SGL
1254 * @instance: Adapter soft state
1255 * @scp: SCSI command from the mid-layer
1256 * @mfi_sgl: SGL to be filled in
1257 *
1258 * If successful, this function returns the number of SG elements. Otherwise,
1259 * it returnes -1.
1260 */
1261 static int
megasas_make_sgl32(struct megasas_instance * instance,struct scsi_cmnd * scp,union megasas_sgl * mfi_sgl)1262 megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp,
1263 union megasas_sgl *mfi_sgl)
1264 {
1265 int i;
1266 int sge_count;
1267 struct scatterlist *os_sgl;
1268
1269 sge_count = scsi_dma_map(scp);
1270 BUG_ON(sge_count < 0);
1271
1272 if (sge_count) {
1273 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1274 mfi_sgl->sge32[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1275 mfi_sgl->sge32[i].phys_addr = cpu_to_le32(sg_dma_address(os_sgl));
1276 }
1277 }
1278 return sge_count;
1279 }
1280
1281 /**
1282 * megasas_make_sgl64 - Prepares 64-bit SGL
1283 * @instance: Adapter soft state
1284 * @scp: SCSI command from the mid-layer
1285 * @mfi_sgl: SGL to be filled in
1286 *
1287 * If successful, this function returns the number of SG elements. Otherwise,
1288 * it returnes -1.
1289 */
1290 static int
megasas_make_sgl64(struct megasas_instance * instance,struct scsi_cmnd * scp,union megasas_sgl * mfi_sgl)1291 megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp,
1292 union megasas_sgl *mfi_sgl)
1293 {
1294 int i;
1295 int sge_count;
1296 struct scatterlist *os_sgl;
1297
1298 sge_count = scsi_dma_map(scp);
1299 BUG_ON(sge_count < 0);
1300
1301 if (sge_count) {
1302 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1303 mfi_sgl->sge64[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1304 mfi_sgl->sge64[i].phys_addr = cpu_to_le64(sg_dma_address(os_sgl));
1305 }
1306 }
1307 return sge_count;
1308 }
1309
1310 /**
1311 * megasas_make_sgl_skinny - Prepares IEEE SGL
1312 * @instance: Adapter soft state
1313 * @scp: SCSI command from the mid-layer
1314 * @mfi_sgl: SGL to be filled in
1315 *
1316 * If successful, this function returns the number of SG elements. Otherwise,
1317 * it returnes -1.
1318 */
1319 static int
megasas_make_sgl_skinny(struct megasas_instance * instance,struct scsi_cmnd * scp,union megasas_sgl * mfi_sgl)1320 megasas_make_sgl_skinny(struct megasas_instance *instance,
1321 struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl)
1322 {
1323 int i;
1324 int sge_count;
1325 struct scatterlist *os_sgl;
1326
1327 sge_count = scsi_dma_map(scp);
1328
1329 if (sge_count) {
1330 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1331 mfi_sgl->sge_skinny[i].length =
1332 cpu_to_le32(sg_dma_len(os_sgl));
1333 mfi_sgl->sge_skinny[i].phys_addr =
1334 cpu_to_le64(sg_dma_address(os_sgl));
1335 mfi_sgl->sge_skinny[i].flag = cpu_to_le32(0);
1336 }
1337 }
1338 return sge_count;
1339 }
1340
1341 /**
1342 * megasas_get_frame_count - Computes the number of frames
1343 * @frame_type : type of frame- io or pthru frame
1344 * @sge_count : number of sg elements
1345 *
1346 * Returns the number of frames required for numnber of sge's (sge_count)
1347 */
1348
megasas_get_frame_count(struct megasas_instance * instance,u8 sge_count,u8 frame_type)1349 static u32 megasas_get_frame_count(struct megasas_instance *instance,
1350 u8 sge_count, u8 frame_type)
1351 {
1352 int num_cnt;
1353 int sge_bytes;
1354 u32 sge_sz;
1355 u32 frame_count = 0;
1356
1357 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
1358 sizeof(struct megasas_sge32);
1359
1360 if (instance->flag_ieee) {
1361 sge_sz = sizeof(struct megasas_sge_skinny);
1362 }
1363
1364 /*
1365 * Main frame can contain 2 SGEs for 64-bit SGLs and
1366 * 3 SGEs for 32-bit SGLs for ldio &
1367 * 1 SGEs for 64-bit SGLs and
1368 * 2 SGEs for 32-bit SGLs for pthru frame
1369 */
1370 if (unlikely(frame_type == PTHRU_FRAME)) {
1371 if (instance->flag_ieee == 1) {
1372 num_cnt = sge_count - 1;
1373 } else if (IS_DMA64)
1374 num_cnt = sge_count - 1;
1375 else
1376 num_cnt = sge_count - 2;
1377 } else {
1378 if (instance->flag_ieee == 1) {
1379 num_cnt = sge_count - 1;
1380 } else if (IS_DMA64)
1381 num_cnt = sge_count - 2;
1382 else
1383 num_cnt = sge_count - 3;
1384 }
1385
1386 if (num_cnt > 0) {
1387 sge_bytes = sge_sz * num_cnt;
1388
1389 frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) +
1390 ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ;
1391 }
1392 /* Main frame */
1393 frame_count += 1;
1394
1395 if (frame_count > 7)
1396 frame_count = 8;
1397 return frame_count;
1398 }
1399
1400 /**
1401 * megasas_build_dcdb - Prepares a direct cdb (DCDB) command
1402 * @instance: Adapter soft state
1403 * @scp: SCSI command
1404 * @cmd: Command to be prepared in
1405 *
1406 * This function prepares CDB commands. These are typcially pass-through
1407 * commands to the devices.
1408 */
1409 static int
megasas_build_dcdb(struct megasas_instance * instance,struct scsi_cmnd * scp,struct megasas_cmd * cmd)1410 megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp,
1411 struct megasas_cmd *cmd)
1412 {
1413 u32 is_logical;
1414 u32 device_id;
1415 u16 flags = 0;
1416 struct megasas_pthru_frame *pthru;
1417
1418 is_logical = MEGASAS_IS_LOGICAL(scp->device);
1419 device_id = MEGASAS_DEV_INDEX(scp);
1420 pthru = (struct megasas_pthru_frame *)cmd->frame;
1421
1422 if (scp->sc_data_direction == DMA_TO_DEVICE)
1423 flags = MFI_FRAME_DIR_WRITE;
1424 else if (scp->sc_data_direction == DMA_FROM_DEVICE)
1425 flags = MFI_FRAME_DIR_READ;
1426 else if (scp->sc_data_direction == DMA_NONE)
1427 flags = MFI_FRAME_DIR_NONE;
1428
1429 if (instance->flag_ieee == 1) {
1430 flags |= MFI_FRAME_IEEE;
1431 }
1432
1433 /*
1434 * Prepare the DCDB frame
1435 */
1436 pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO;
1437 pthru->cmd_status = 0x0;
1438 pthru->scsi_status = 0x0;
1439 pthru->target_id = device_id;
1440 pthru->lun = scp->device->lun;
1441 pthru->cdb_len = scp->cmd_len;
1442 pthru->timeout = 0;
1443 pthru->pad_0 = 0;
1444 pthru->flags = cpu_to_le16(flags);
1445 pthru->data_xfer_len = cpu_to_le32(scsi_bufflen(scp));
1446
1447 memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);
1448
1449 /*
1450 * If the command is for the tape device, set the
1451 * pthru timeout to the os layer timeout value.
1452 */
1453 if (scp->device->type == TYPE_TAPE) {
1454 if (scsi_cmd_to_rq(scp)->timeout / HZ > 0xFFFF)
1455 pthru->timeout = cpu_to_le16(0xFFFF);
1456 else
1457 pthru->timeout = cpu_to_le16(scsi_cmd_to_rq(scp)->timeout / HZ);
1458 }
1459
1460 /*
1461 * Construct SGL
1462 */
1463 if (instance->flag_ieee == 1) {
1464 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1465 pthru->sge_count = megasas_make_sgl_skinny(instance, scp,
1466 &pthru->sgl);
1467 } else if (IS_DMA64) {
1468 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1469 pthru->sge_count = megasas_make_sgl64(instance, scp,
1470 &pthru->sgl);
1471 } else
1472 pthru->sge_count = megasas_make_sgl32(instance, scp,
1473 &pthru->sgl);
1474
1475 if (pthru->sge_count > instance->max_num_sge) {
1476 dev_err(&instance->pdev->dev, "DCDB too many SGE NUM=%x\n",
1477 pthru->sge_count);
1478 return 0;
1479 }
1480
1481 /*
1482 * Sense info specific
1483 */
1484 pthru->sense_len = SCSI_SENSE_BUFFERSIZE;
1485 pthru->sense_buf_phys_addr_hi =
1486 cpu_to_le32(upper_32_bits(cmd->sense_phys_addr));
1487 pthru->sense_buf_phys_addr_lo =
1488 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr));
1489
1490 /*
1491 * Compute the total number of frames this command consumes. FW uses
1492 * this number to pull sufficient number of frames from host memory.
1493 */
1494 cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count,
1495 PTHRU_FRAME);
1496
1497 return cmd->frame_count;
1498 }
1499
1500 /**
1501 * megasas_build_ldio - Prepares IOs to logical devices
1502 * @instance: Adapter soft state
1503 * @scp: SCSI command
1504 * @cmd: Command to be prepared
1505 *
1506 * Frames (and accompanying SGLs) for regular SCSI IOs use this function.
1507 */
1508 static int
megasas_build_ldio(struct megasas_instance * instance,struct scsi_cmnd * scp,struct megasas_cmd * cmd)1509 megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp,
1510 struct megasas_cmd *cmd)
1511 {
1512 u32 device_id;
1513 u8 sc = scp->cmnd[0];
1514 u16 flags = 0;
1515 struct megasas_io_frame *ldio;
1516
1517 device_id = MEGASAS_DEV_INDEX(scp);
1518 ldio = (struct megasas_io_frame *)cmd->frame;
1519
1520 if (scp->sc_data_direction == DMA_TO_DEVICE)
1521 flags = MFI_FRAME_DIR_WRITE;
1522 else if (scp->sc_data_direction == DMA_FROM_DEVICE)
1523 flags = MFI_FRAME_DIR_READ;
1524
1525 if (instance->flag_ieee == 1) {
1526 flags |= MFI_FRAME_IEEE;
1527 }
1528
1529 /*
1530 * Prepare the Logical IO frame: 2nd bit is zero for all read cmds
1531 */
1532 ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ;
1533 ldio->cmd_status = 0x0;
1534 ldio->scsi_status = 0x0;
1535 ldio->target_id = device_id;
1536 ldio->timeout = 0;
1537 ldio->reserved_0 = 0;
1538 ldio->pad_0 = 0;
1539 ldio->flags = cpu_to_le16(flags);
1540 ldio->start_lba_hi = 0;
1541 ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0;
1542
1543 /*
1544 * 6-byte READ(0x08) or WRITE(0x0A) cdb
1545 */
1546 if (scp->cmd_len == 6) {
1547 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[4]);
1548 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[1] << 16) |
1549 ((u32) scp->cmnd[2] << 8) |
1550 (u32) scp->cmnd[3]);
1551
1552 ldio->start_lba_lo &= cpu_to_le32(0x1FFFFF);
1553 }
1554
1555 /*
1556 * 10-byte READ(0x28) or WRITE(0x2A) cdb
1557 */
1558 else if (scp->cmd_len == 10) {
1559 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[8] |
1560 ((u32) scp->cmnd[7] << 8));
1561 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1562 ((u32) scp->cmnd[3] << 16) |
1563 ((u32) scp->cmnd[4] << 8) |
1564 (u32) scp->cmnd[5]);
1565 }
1566
1567 /*
1568 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1569 */
1570 else if (scp->cmd_len == 12) {
1571 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1572 ((u32) scp->cmnd[7] << 16) |
1573 ((u32) scp->cmnd[8] << 8) |
1574 (u32) scp->cmnd[9]);
1575
1576 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1577 ((u32) scp->cmnd[3] << 16) |
1578 ((u32) scp->cmnd[4] << 8) |
1579 (u32) scp->cmnd[5]);
1580 }
1581
1582 /*
1583 * 16-byte READ(0x88) or WRITE(0x8A) cdb
1584 */
1585 else if (scp->cmd_len == 16) {
1586 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[10] << 24) |
1587 ((u32) scp->cmnd[11] << 16) |
1588 ((u32) scp->cmnd[12] << 8) |
1589 (u32) scp->cmnd[13]);
1590
1591 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1592 ((u32) scp->cmnd[7] << 16) |
1593 ((u32) scp->cmnd[8] << 8) |
1594 (u32) scp->cmnd[9]);
1595
1596 ldio->start_lba_hi = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1597 ((u32) scp->cmnd[3] << 16) |
1598 ((u32) scp->cmnd[4] << 8) |
1599 (u32) scp->cmnd[5]);
1600
1601 }
1602
1603 /*
1604 * Construct SGL
1605 */
1606 if (instance->flag_ieee) {
1607 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1608 ldio->sge_count = megasas_make_sgl_skinny(instance, scp,
1609 &ldio->sgl);
1610 } else if (IS_DMA64) {
1611 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1612 ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl);
1613 } else
1614 ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl);
1615
1616 if (ldio->sge_count > instance->max_num_sge) {
1617 dev_err(&instance->pdev->dev, "build_ld_io: sge_count = %x\n",
1618 ldio->sge_count);
1619 return 0;
1620 }
1621
1622 /*
1623 * Sense info specific
1624 */
1625 ldio->sense_len = SCSI_SENSE_BUFFERSIZE;
1626 ldio->sense_buf_phys_addr_hi = 0;
1627 ldio->sense_buf_phys_addr_lo = cpu_to_le32(cmd->sense_phys_addr);
1628
1629 /*
1630 * Compute the total number of frames this command consumes. FW uses
1631 * this number to pull sufficient number of frames from host memory.
1632 */
1633 cmd->frame_count = megasas_get_frame_count(instance,
1634 ldio->sge_count, IO_FRAME);
1635
1636 return cmd->frame_count;
1637 }
1638
1639 /**
1640 * megasas_cmd_type - Checks if the cmd is for logical drive/sysPD
1641 * and whether it's RW or non RW
1642 * @cmd: SCSI command
1643 *
1644 */
megasas_cmd_type(struct scsi_cmnd * cmd)1645 inline int megasas_cmd_type(struct scsi_cmnd *cmd)
1646 {
1647 int ret;
1648
1649 switch (cmd->cmnd[0]) {
1650 case READ_10:
1651 case WRITE_10:
1652 case READ_12:
1653 case WRITE_12:
1654 case READ_6:
1655 case WRITE_6:
1656 case READ_16:
1657 case WRITE_16:
1658 ret = (MEGASAS_IS_LOGICAL(cmd->device)) ?
1659 READ_WRITE_LDIO : READ_WRITE_SYSPDIO;
1660 break;
1661 default:
1662 ret = (MEGASAS_IS_LOGICAL(cmd->device)) ?
1663 NON_READ_WRITE_LDIO : NON_READ_WRITE_SYSPDIO;
1664 }
1665 return ret;
1666 }
1667
1668 /**
1669 * megasas_dump_pending_frames - Dumps the frame address of all pending cmds
1670 * in FW
1671 * @instance: Adapter soft state
1672 */
1673 static inline void
megasas_dump_pending_frames(struct megasas_instance * instance)1674 megasas_dump_pending_frames(struct megasas_instance *instance)
1675 {
1676 struct megasas_cmd *cmd;
1677 int i,n;
1678 union megasas_sgl *mfi_sgl;
1679 struct megasas_io_frame *ldio;
1680 struct megasas_pthru_frame *pthru;
1681 u32 sgcount;
1682 u16 max_cmd = instance->max_fw_cmds;
1683
1684 dev_err(&instance->pdev->dev, "[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no);
1685 dev_err(&instance->pdev->dev, "[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding));
1686 if (IS_DMA64)
1687 dev_err(&instance->pdev->dev, "[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no);
1688 else
1689 dev_err(&instance->pdev->dev, "[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no);
1690
1691 dev_err(&instance->pdev->dev, "[%d]: Pending OS cmds in FW : \n",instance->host->host_no);
1692 for (i = 0; i < max_cmd; i++) {
1693 cmd = instance->cmd_list[i];
1694 if (!cmd->scmd)
1695 continue;
1696 dev_err(&instance->pdev->dev, "[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr);
1697 if (megasas_cmd_type(cmd->scmd) == READ_WRITE_LDIO) {
1698 ldio = (struct megasas_io_frame *)cmd->frame;
1699 mfi_sgl = &ldio->sgl;
1700 sgcount = ldio->sge_count;
1701 dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x,"
1702 " lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1703 instance->host->host_no, cmd->frame_count, ldio->cmd, ldio->target_id,
1704 le32_to_cpu(ldio->start_lba_lo), le32_to_cpu(ldio->start_lba_hi),
1705 le32_to_cpu(ldio->sense_buf_phys_addr_lo), sgcount);
1706 } else {
1707 pthru = (struct megasas_pthru_frame *) cmd->frame;
1708 mfi_sgl = &pthru->sgl;
1709 sgcount = pthru->sge_count;
1710 dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, "
1711 "lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1712 instance->host->host_no, cmd->frame_count, pthru->cmd, pthru->target_id,
1713 pthru->lun, pthru->cdb_len, le32_to_cpu(pthru->data_xfer_len),
1714 le32_to_cpu(pthru->sense_buf_phys_addr_lo), sgcount);
1715 }
1716 if (megasas_dbg_lvl & MEGASAS_DBG_LVL) {
1717 for (n = 0; n < sgcount; n++) {
1718 if (IS_DMA64)
1719 dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%llx\n",
1720 le32_to_cpu(mfi_sgl->sge64[n].length),
1721 le64_to_cpu(mfi_sgl->sge64[n].phys_addr));
1722 else
1723 dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%x\n",
1724 le32_to_cpu(mfi_sgl->sge32[n].length),
1725 le32_to_cpu(mfi_sgl->sge32[n].phys_addr));
1726 }
1727 }
1728 } /*for max_cmd*/
1729 dev_err(&instance->pdev->dev, "[%d]: Pending Internal cmds in FW : \n",instance->host->host_no);
1730 for (i = 0; i < max_cmd; i++) {
1731
1732 cmd = instance->cmd_list[i];
1733
1734 if (cmd->sync_cmd == 1)
1735 dev_err(&instance->pdev->dev, "0x%08lx : ", (unsigned long)cmd->frame_phys_addr);
1736 }
1737 dev_err(&instance->pdev->dev, "[%d]: Dumping Done\n\n",instance->host->host_no);
1738 }
1739
1740 u32
megasas_build_and_issue_cmd(struct megasas_instance * instance,struct scsi_cmnd * scmd)1741 megasas_build_and_issue_cmd(struct megasas_instance *instance,
1742 struct scsi_cmnd *scmd)
1743 {
1744 struct megasas_cmd *cmd;
1745 u32 frame_count;
1746
1747 cmd = megasas_get_cmd(instance);
1748 if (!cmd)
1749 return SCSI_MLQUEUE_HOST_BUSY;
1750
1751 /*
1752 * Logical drive command
1753 */
1754 if (megasas_cmd_type(scmd) == READ_WRITE_LDIO)
1755 frame_count = megasas_build_ldio(instance, scmd, cmd);
1756 else
1757 frame_count = megasas_build_dcdb(instance, scmd, cmd);
1758
1759 if (!frame_count)
1760 goto out_return_cmd;
1761
1762 cmd->scmd = scmd;
1763 megasas_priv(scmd)->cmd_priv = cmd;
1764
1765 /*
1766 * Issue the command to the FW
1767 */
1768 atomic_inc(&instance->fw_outstanding);
1769
1770 instance->instancet->fire_cmd(instance, cmd->frame_phys_addr,
1771 cmd->frame_count-1, instance->reg_set);
1772
1773 return 0;
1774 out_return_cmd:
1775 megasas_return_cmd(instance, cmd);
1776 return SCSI_MLQUEUE_HOST_BUSY;
1777 }
1778
1779
1780 /**
1781 * megasas_queue_command - Queue entry point
1782 * @shost: adapter SCSI host
1783 * @scmd: SCSI command to be queued
1784 */
1785 static int
megasas_queue_command(struct Scsi_Host * shost,struct scsi_cmnd * scmd)1786 megasas_queue_command(struct Scsi_Host *shost, struct scsi_cmnd *scmd)
1787 {
1788 struct megasas_instance *instance;
1789 struct MR_PRIV_DEVICE *mr_device_priv_data;
1790 u32 ld_tgt_id;
1791
1792 instance = (struct megasas_instance *)
1793 scmd->device->host->hostdata;
1794
1795 if (instance->unload == 1) {
1796 scmd->result = DID_NO_CONNECT << 16;
1797 scsi_done(scmd);
1798 return 0;
1799 }
1800
1801 if (instance->issuepend_done == 0)
1802 return SCSI_MLQUEUE_HOST_BUSY;
1803
1804
1805 /* Check for an mpio path and adjust behavior */
1806 if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
1807 if (megasas_check_mpio_paths(instance, scmd) ==
1808 (DID_REQUEUE << 16)) {
1809 return SCSI_MLQUEUE_HOST_BUSY;
1810 } else {
1811 scmd->result = DID_NO_CONNECT << 16;
1812 scsi_done(scmd);
1813 return 0;
1814 }
1815 }
1816
1817 mr_device_priv_data = scmd->device->hostdata;
1818 if (!mr_device_priv_data ||
1819 (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)) {
1820 scmd->result = DID_NO_CONNECT << 16;
1821 scsi_done(scmd);
1822 return 0;
1823 }
1824
1825 if (MEGASAS_IS_LOGICAL(scmd->device)) {
1826 ld_tgt_id = MEGASAS_TARGET_ID(scmd->device);
1827 if (instance->ld_tgtid_status[ld_tgt_id] == LD_TARGET_ID_DELETED) {
1828 scmd->result = DID_NO_CONNECT << 16;
1829 scsi_done(scmd);
1830 return 0;
1831 }
1832 }
1833
1834 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
1835 return SCSI_MLQUEUE_HOST_BUSY;
1836
1837 if (mr_device_priv_data->tm_busy)
1838 return SCSI_MLQUEUE_DEVICE_BUSY;
1839
1840
1841 scmd->result = 0;
1842
1843 if (MEGASAS_IS_LOGICAL(scmd->device) &&
1844 (scmd->device->id >= instance->fw_supported_vd_count ||
1845 scmd->device->lun)) {
1846 scmd->result = DID_BAD_TARGET << 16;
1847 goto out_done;
1848 }
1849
1850 if ((scmd->cmnd[0] == SYNCHRONIZE_CACHE) &&
1851 MEGASAS_IS_LOGICAL(scmd->device) &&
1852 (!instance->fw_sync_cache_support)) {
1853 scmd->result = DID_OK << 16;
1854 goto out_done;
1855 }
1856
1857 return instance->instancet->build_and_issue_cmd(instance, scmd);
1858
1859 out_done:
1860 scsi_done(scmd);
1861 return 0;
1862 }
1863
megasas_lookup_instance(u16 host_no)1864 static struct megasas_instance *megasas_lookup_instance(u16 host_no)
1865 {
1866 int i;
1867
1868 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
1869
1870 if ((megasas_mgmt_info.instance[i]) &&
1871 (megasas_mgmt_info.instance[i]->host->host_no == host_no))
1872 return megasas_mgmt_info.instance[i];
1873 }
1874
1875 return NULL;
1876 }
1877
1878 /*
1879 * megasas_set_dynamic_target_properties -
1880 * Device property set by driver may not be static and it is required to be
1881 * updated after OCR
1882 *
1883 * set tm_capable.
1884 * set dma alignment (only for eedp protection enable vd).
1885 *
1886 * @sdev: OS provided scsi device
1887 *
1888 * Returns void
1889 */
megasas_set_dynamic_target_properties(struct scsi_device * sdev,bool is_target_prop)1890 void megasas_set_dynamic_target_properties(struct scsi_device *sdev,
1891 bool is_target_prop)
1892 {
1893 u16 pd_index = 0, ld;
1894 u32 device_id;
1895 struct megasas_instance *instance;
1896 struct fusion_context *fusion;
1897 struct MR_PRIV_DEVICE *mr_device_priv_data;
1898 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
1899 struct MR_LD_RAID *raid;
1900 struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
1901
1902 instance = megasas_lookup_instance(sdev->host->host_no);
1903 fusion = instance->ctrl_context;
1904 mr_device_priv_data = sdev->hostdata;
1905
1906 if (!fusion || !mr_device_priv_data)
1907 return;
1908
1909 if (MEGASAS_IS_LOGICAL(sdev)) {
1910 device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL)
1911 + sdev->id;
1912 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
1913 ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
1914 if (ld >= instance->fw_supported_vd_count)
1915 return;
1916 raid = MR_LdRaidGet(ld, local_map_ptr);
1917
1918 if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER)
1919 blk_queue_update_dma_alignment(sdev->request_queue, 0x7);
1920
1921 mr_device_priv_data->is_tm_capable =
1922 raid->capability.tmCapable;
1923
1924 if (!raid->flags.isEPD)
1925 sdev->no_write_same = 1;
1926
1927 } else if (instance->use_seqnum_jbod_fp) {
1928 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1929 sdev->id;
1930 pd_sync = (void *)fusion->pd_seq_sync
1931 [(instance->pd_seq_map_id - 1) & 1];
1932 mr_device_priv_data->is_tm_capable =
1933 pd_sync->seq[pd_index].capability.tmCapable;
1934 }
1935
1936 if (is_target_prop && instance->tgt_prop->reset_tmo) {
1937 /*
1938 * If FW provides a target reset timeout value, driver will use
1939 * it. If not set, fallback to default values.
1940 */
1941 mr_device_priv_data->target_reset_tmo =
1942 min_t(u8, instance->max_reset_tmo,
1943 instance->tgt_prop->reset_tmo);
1944 mr_device_priv_data->task_abort_tmo = instance->task_abort_tmo;
1945 } else {
1946 mr_device_priv_data->target_reset_tmo =
1947 MEGASAS_DEFAULT_TM_TIMEOUT;
1948 mr_device_priv_data->task_abort_tmo =
1949 MEGASAS_DEFAULT_TM_TIMEOUT;
1950 }
1951 }
1952
1953 /*
1954 * megasas_set_nvme_device_properties -
1955 * set nomerges=2
1956 * set virtual page boundary = 4K (current mr_nvme_pg_size is 4K).
1957 * set maximum io transfer = MDTS of NVME device provided by MR firmware.
1958 *
1959 * MR firmware provides value in KB. Caller of this function converts
1960 * kb into bytes.
1961 *
1962 * e.a MDTS=5 means 2^5 * nvme page size. (In case of 4K page size,
1963 * MR firmware provides value 128 as (32 * 4K) = 128K.
1964 *
1965 * @sdev: scsi device
1966 * @max_io_size: maximum io transfer size
1967 *
1968 */
1969 static inline void
megasas_set_nvme_device_properties(struct scsi_device * sdev,u32 max_io_size)1970 megasas_set_nvme_device_properties(struct scsi_device *sdev, u32 max_io_size)
1971 {
1972 struct megasas_instance *instance;
1973 u32 mr_nvme_pg_size;
1974
1975 instance = (struct megasas_instance *)sdev->host->hostdata;
1976 mr_nvme_pg_size = max_t(u32, instance->nvme_page_size,
1977 MR_DEFAULT_NVME_PAGE_SIZE);
1978
1979 blk_queue_max_hw_sectors(sdev->request_queue, (max_io_size / 512));
1980
1981 blk_queue_flag_set(QUEUE_FLAG_NOMERGES, sdev->request_queue);
1982 blk_queue_virt_boundary(sdev->request_queue, mr_nvme_pg_size - 1);
1983 }
1984
1985 /*
1986 * megasas_set_fw_assisted_qd -
1987 * set device queue depth to can_queue
1988 * set device queue depth to fw assisted qd
1989 *
1990 * @sdev: scsi device
1991 * @is_target_prop true, if fw provided target properties.
1992 */
megasas_set_fw_assisted_qd(struct scsi_device * sdev,bool is_target_prop)1993 static void megasas_set_fw_assisted_qd(struct scsi_device *sdev,
1994 bool is_target_prop)
1995 {
1996 u8 interface_type;
1997 u32 device_qd = MEGASAS_DEFAULT_CMD_PER_LUN;
1998 u32 tgt_device_qd;
1999 struct megasas_instance *instance;
2000 struct MR_PRIV_DEVICE *mr_device_priv_data;
2001
2002 instance = megasas_lookup_instance(sdev->host->host_no);
2003 mr_device_priv_data = sdev->hostdata;
2004 interface_type = mr_device_priv_data->interface_type;
2005
2006 switch (interface_type) {
2007 case SAS_PD:
2008 device_qd = MEGASAS_SAS_QD;
2009 break;
2010 case SATA_PD:
2011 device_qd = MEGASAS_SATA_QD;
2012 break;
2013 case NVME_PD:
2014 device_qd = MEGASAS_NVME_QD;
2015 break;
2016 }
2017
2018 if (is_target_prop) {
2019 tgt_device_qd = le32_to_cpu(instance->tgt_prop->device_qdepth);
2020 if (tgt_device_qd)
2021 device_qd = min(instance->host->can_queue,
2022 (int)tgt_device_qd);
2023 }
2024
2025 if (instance->enable_sdev_max_qd && interface_type != UNKNOWN_DRIVE)
2026 device_qd = instance->host->can_queue;
2027
2028 scsi_change_queue_depth(sdev, device_qd);
2029 }
2030
2031 /*
2032 * megasas_set_static_target_properties -
2033 * Device property set by driver are static and it is not required to be
2034 * updated after OCR.
2035 *
2036 * set io timeout
2037 * set device queue depth
2038 * set nvme device properties. see - megasas_set_nvme_device_properties
2039 *
2040 * @sdev: scsi device
2041 * @is_target_prop true, if fw provided target properties.
2042 */
megasas_set_static_target_properties(struct scsi_device * sdev,bool is_target_prop)2043 static void megasas_set_static_target_properties(struct scsi_device *sdev,
2044 bool is_target_prop)
2045 {
2046 u32 max_io_size_kb = MR_DEFAULT_NVME_MDTS_KB;
2047 struct megasas_instance *instance;
2048
2049 instance = megasas_lookup_instance(sdev->host->host_no);
2050
2051 /*
2052 * The RAID firmware may require extended timeouts.
2053 */
2054 blk_queue_rq_timeout(sdev->request_queue, scmd_timeout * HZ);
2055
2056 /* max_io_size_kb will be set to non zero for
2057 * nvme based vd and syspd.
2058 */
2059 if (is_target_prop)
2060 max_io_size_kb = le32_to_cpu(instance->tgt_prop->max_io_size_kb);
2061
2062 if (instance->nvme_page_size && max_io_size_kb)
2063 megasas_set_nvme_device_properties(sdev, (max_io_size_kb << 10));
2064
2065 megasas_set_fw_assisted_qd(sdev, is_target_prop);
2066 }
2067
2068
megasas_slave_configure(struct scsi_device * sdev)2069 static int megasas_slave_configure(struct scsi_device *sdev)
2070 {
2071 u16 pd_index = 0;
2072 struct megasas_instance *instance;
2073 int ret_target_prop = DCMD_FAILED;
2074 bool is_target_prop = false;
2075
2076 instance = megasas_lookup_instance(sdev->host->host_no);
2077 if (instance->pd_list_not_supported) {
2078 if (!MEGASAS_IS_LOGICAL(sdev) && sdev->type == TYPE_DISK) {
2079 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
2080 sdev->id;
2081 if (instance->pd_list[pd_index].driveState !=
2082 MR_PD_STATE_SYSTEM)
2083 return -ENXIO;
2084 }
2085 }
2086
2087 mutex_lock(&instance->reset_mutex);
2088 /* Send DCMD to Firmware and cache the information */
2089 if ((instance->pd_info) && !MEGASAS_IS_LOGICAL(sdev))
2090 megasas_get_pd_info(instance, sdev);
2091
2092 /* Some ventura firmware may not have instance->nvme_page_size set.
2093 * Do not send MR_DCMD_DRV_GET_TARGET_PROP
2094 */
2095 if ((instance->tgt_prop) && (instance->nvme_page_size))
2096 ret_target_prop = megasas_get_target_prop(instance, sdev);
2097
2098 is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false;
2099 megasas_set_static_target_properties(sdev, is_target_prop);
2100
2101 /* This sdev property may change post OCR */
2102 megasas_set_dynamic_target_properties(sdev, is_target_prop);
2103
2104 mutex_unlock(&instance->reset_mutex);
2105
2106 return 0;
2107 }
2108
megasas_slave_alloc(struct scsi_device * sdev)2109 static int megasas_slave_alloc(struct scsi_device *sdev)
2110 {
2111 u16 pd_index = 0, ld_tgt_id;
2112 struct megasas_instance *instance ;
2113 struct MR_PRIV_DEVICE *mr_device_priv_data;
2114
2115 instance = megasas_lookup_instance(sdev->host->host_no);
2116 if (!MEGASAS_IS_LOGICAL(sdev)) {
2117 /*
2118 * Open the OS scan to the SYSTEM PD
2119 */
2120 pd_index =
2121 (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
2122 sdev->id;
2123 if ((instance->pd_list_not_supported ||
2124 instance->pd_list[pd_index].driveState ==
2125 MR_PD_STATE_SYSTEM)) {
2126 goto scan_target;
2127 }
2128 return -ENXIO;
2129 } else if (!MEGASAS_IS_LUN_VALID(sdev)) {
2130 sdev_printk(KERN_INFO, sdev, "%s: invalid LUN\n", __func__);
2131 return -ENXIO;
2132 }
2133
2134 scan_target:
2135 mr_device_priv_data = kzalloc(sizeof(*mr_device_priv_data),
2136 GFP_KERNEL);
2137 if (!mr_device_priv_data)
2138 return -ENOMEM;
2139
2140 if (MEGASAS_IS_LOGICAL(sdev)) {
2141 ld_tgt_id = MEGASAS_TARGET_ID(sdev);
2142 instance->ld_tgtid_status[ld_tgt_id] = LD_TARGET_ID_ACTIVE;
2143 if (megasas_dbg_lvl & LD_PD_DEBUG)
2144 sdev_printk(KERN_INFO, sdev, "LD target ID %d created.\n", ld_tgt_id);
2145 }
2146
2147 sdev->hostdata = mr_device_priv_data;
2148
2149 atomic_set(&mr_device_priv_data->r1_ldio_hint,
2150 instance->r1_ldio_hint_default);
2151 return 0;
2152 }
2153
megasas_slave_destroy(struct scsi_device * sdev)2154 static void megasas_slave_destroy(struct scsi_device *sdev)
2155 {
2156 u16 ld_tgt_id;
2157 struct megasas_instance *instance;
2158
2159 instance = megasas_lookup_instance(sdev->host->host_no);
2160
2161 if (MEGASAS_IS_LOGICAL(sdev)) {
2162 if (!MEGASAS_IS_LUN_VALID(sdev)) {
2163 sdev_printk(KERN_INFO, sdev, "%s: invalid LUN\n", __func__);
2164 return;
2165 }
2166 ld_tgt_id = MEGASAS_TARGET_ID(sdev);
2167 instance->ld_tgtid_status[ld_tgt_id] = LD_TARGET_ID_DELETED;
2168 if (megasas_dbg_lvl & LD_PD_DEBUG)
2169 sdev_printk(KERN_INFO, sdev,
2170 "LD target ID %d removed from OS stack\n", ld_tgt_id);
2171 }
2172
2173 kfree(sdev->hostdata);
2174 sdev->hostdata = NULL;
2175 }
2176
2177 /*
2178 * megasas_complete_outstanding_ioctls - Complete outstanding ioctls after a
2179 * kill adapter
2180 * @instance: Adapter soft state
2181 *
2182 */
megasas_complete_outstanding_ioctls(struct megasas_instance * instance)2183 static void megasas_complete_outstanding_ioctls(struct megasas_instance *instance)
2184 {
2185 int i;
2186 struct megasas_cmd *cmd_mfi;
2187 struct megasas_cmd_fusion *cmd_fusion;
2188 struct fusion_context *fusion = instance->ctrl_context;
2189
2190 /* Find all outstanding ioctls */
2191 if (fusion) {
2192 for (i = 0; i < instance->max_fw_cmds; i++) {
2193 cmd_fusion = fusion->cmd_list[i];
2194 if (cmd_fusion->sync_cmd_idx != (u32)ULONG_MAX) {
2195 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
2196 if (cmd_mfi->sync_cmd &&
2197 (cmd_mfi->frame->hdr.cmd != MFI_CMD_ABORT)) {
2198 cmd_mfi->frame->hdr.cmd_status =
2199 MFI_STAT_WRONG_STATE;
2200 megasas_complete_cmd(instance,
2201 cmd_mfi, DID_OK);
2202 }
2203 }
2204 }
2205 } else {
2206 for (i = 0; i < instance->max_fw_cmds; i++) {
2207 cmd_mfi = instance->cmd_list[i];
2208 if (cmd_mfi->sync_cmd && cmd_mfi->frame->hdr.cmd !=
2209 MFI_CMD_ABORT)
2210 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
2211 }
2212 }
2213 }
2214
2215
megaraid_sas_kill_hba(struct megasas_instance * instance)2216 void megaraid_sas_kill_hba(struct megasas_instance *instance)
2217 {
2218 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2219 dev_warn(&instance->pdev->dev,
2220 "Adapter already dead, skipping kill HBA\n");
2221 return;
2222 }
2223
2224 /* Set critical error to block I/O & ioctls in case caller didn't */
2225 atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2226 /* Wait 1 second to ensure IO or ioctls in build have posted */
2227 msleep(1000);
2228 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2229 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
2230 (instance->adapter_type != MFI_SERIES)) {
2231 if (!instance->requestorId) {
2232 writel(MFI_STOP_ADP, &instance->reg_set->doorbell);
2233 /* Flush */
2234 readl(&instance->reg_set->doorbell);
2235 }
2236 if (instance->requestorId && instance->peerIsPresent)
2237 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
2238 } else {
2239 writel(MFI_STOP_ADP,
2240 &instance->reg_set->inbound_doorbell);
2241 }
2242 /* Complete outstanding ioctls when adapter is killed */
2243 megasas_complete_outstanding_ioctls(instance);
2244 }
2245
2246 /**
2247 * megasas_check_and_restore_queue_depth - Check if queue depth needs to be
2248 * restored to max value
2249 * @instance: Adapter soft state
2250 *
2251 */
2252 void
megasas_check_and_restore_queue_depth(struct megasas_instance * instance)2253 megasas_check_and_restore_queue_depth(struct megasas_instance *instance)
2254 {
2255 unsigned long flags;
2256
2257 if (instance->flag & MEGASAS_FW_BUSY
2258 && time_after(jiffies, instance->last_time + 5 * HZ)
2259 && atomic_read(&instance->fw_outstanding) <
2260 instance->throttlequeuedepth + 1) {
2261
2262 spin_lock_irqsave(instance->host->host_lock, flags);
2263 instance->flag &= ~MEGASAS_FW_BUSY;
2264
2265 instance->host->can_queue = instance->cur_can_queue;
2266 spin_unlock_irqrestore(instance->host->host_lock, flags);
2267 }
2268 }
2269
2270 /**
2271 * megasas_complete_cmd_dpc - Returns FW's controller structure
2272 * @instance_addr: Address of adapter soft state
2273 *
2274 * Tasklet to complete cmds
2275 */
megasas_complete_cmd_dpc(unsigned long instance_addr)2276 static void megasas_complete_cmd_dpc(unsigned long instance_addr)
2277 {
2278 u32 producer;
2279 u32 consumer;
2280 u32 context;
2281 struct megasas_cmd *cmd;
2282 struct megasas_instance *instance =
2283 (struct megasas_instance *)instance_addr;
2284 unsigned long flags;
2285
2286 /* If we have already declared adapter dead, donot complete cmds */
2287 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
2288 return;
2289
2290 spin_lock_irqsave(&instance->completion_lock, flags);
2291
2292 producer = le32_to_cpu(*instance->producer);
2293 consumer = le32_to_cpu(*instance->consumer);
2294
2295 while (consumer != producer) {
2296 context = le32_to_cpu(instance->reply_queue[consumer]);
2297 if (context >= instance->max_fw_cmds) {
2298 dev_err(&instance->pdev->dev, "Unexpected context value %x\n",
2299 context);
2300 BUG();
2301 }
2302
2303 cmd = instance->cmd_list[context];
2304
2305 megasas_complete_cmd(instance, cmd, DID_OK);
2306
2307 consumer++;
2308 if (consumer == (instance->max_fw_cmds + 1)) {
2309 consumer = 0;
2310 }
2311 }
2312
2313 *instance->consumer = cpu_to_le32(producer);
2314
2315 spin_unlock_irqrestore(&instance->completion_lock, flags);
2316
2317 /*
2318 * Check if we can restore can_queue
2319 */
2320 megasas_check_and_restore_queue_depth(instance);
2321 }
2322
2323 static void megasas_sriov_heartbeat_handler(struct timer_list *t);
2324
2325 /**
2326 * megasas_start_timer - Initializes sriov heartbeat timer object
2327 * @instance: Adapter soft state
2328 *
2329 */
megasas_start_timer(struct megasas_instance * instance)2330 void megasas_start_timer(struct megasas_instance *instance)
2331 {
2332 struct timer_list *timer = &instance->sriov_heartbeat_timer;
2333
2334 timer_setup(timer, megasas_sriov_heartbeat_handler, 0);
2335 timer->expires = jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF;
2336 add_timer(timer);
2337 }
2338
2339 static void
2340 megasas_internal_reset_defer_cmds(struct megasas_instance *instance);
2341
2342 static void
2343 process_fw_state_change_wq(struct work_struct *work);
2344
megasas_do_ocr(struct megasas_instance * instance)2345 static void megasas_do_ocr(struct megasas_instance *instance)
2346 {
2347 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
2348 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
2349 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
2350 *instance->consumer = cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
2351 }
2352 instance->instancet->disable_intr(instance);
2353 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
2354 instance->issuepend_done = 0;
2355
2356 atomic_set(&instance->fw_outstanding, 0);
2357 megasas_internal_reset_defer_cmds(instance);
2358 process_fw_state_change_wq(&instance->work_init);
2359 }
2360
megasas_get_ld_vf_affiliation_111(struct megasas_instance * instance,int initial)2361 static int megasas_get_ld_vf_affiliation_111(struct megasas_instance *instance,
2362 int initial)
2363 {
2364 struct megasas_cmd *cmd;
2365 struct megasas_dcmd_frame *dcmd;
2366 struct MR_LD_VF_AFFILIATION_111 *new_affiliation_111 = NULL;
2367 dma_addr_t new_affiliation_111_h;
2368 int ld, retval = 0;
2369 u8 thisVf;
2370
2371 cmd = megasas_get_cmd(instance);
2372
2373 if (!cmd) {
2374 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation_111:"
2375 "Failed to get cmd for scsi%d\n",
2376 instance->host->host_no);
2377 return -ENOMEM;
2378 }
2379
2380 dcmd = &cmd->frame->dcmd;
2381
2382 if (!instance->vf_affiliation_111) {
2383 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2384 "affiliation for scsi%d\n", instance->host->host_no);
2385 megasas_return_cmd(instance, cmd);
2386 return -ENOMEM;
2387 }
2388
2389 if (initial)
2390 memset(instance->vf_affiliation_111, 0,
2391 sizeof(struct MR_LD_VF_AFFILIATION_111));
2392 else {
2393 new_affiliation_111 =
2394 dma_alloc_coherent(&instance->pdev->dev,
2395 sizeof(struct MR_LD_VF_AFFILIATION_111),
2396 &new_affiliation_111_h, GFP_KERNEL);
2397 if (!new_affiliation_111) {
2398 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2399 "memory for new affiliation for scsi%d\n",
2400 instance->host->host_no);
2401 megasas_return_cmd(instance, cmd);
2402 return -ENOMEM;
2403 }
2404 }
2405
2406 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2407
2408 dcmd->cmd = MFI_CMD_DCMD;
2409 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2410 dcmd->sge_count = 1;
2411 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2412 dcmd->timeout = 0;
2413 dcmd->pad_0 = 0;
2414 dcmd->data_xfer_len =
2415 cpu_to_le32(sizeof(struct MR_LD_VF_AFFILIATION_111));
2416 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS_111);
2417
2418 if (initial)
2419 dcmd->sgl.sge32[0].phys_addr =
2420 cpu_to_le32(instance->vf_affiliation_111_h);
2421 else
2422 dcmd->sgl.sge32[0].phys_addr =
2423 cpu_to_le32(new_affiliation_111_h);
2424
2425 dcmd->sgl.sge32[0].length = cpu_to_le32(
2426 sizeof(struct MR_LD_VF_AFFILIATION_111));
2427
2428 dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2429 "scsi%d\n", instance->host->host_no);
2430
2431 if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2432 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2433 " failed with status 0x%x for scsi%d\n",
2434 dcmd->cmd_status, instance->host->host_no);
2435 retval = 1; /* Do a scan if we couldn't get affiliation */
2436 goto out;
2437 }
2438
2439 if (!initial) {
2440 thisVf = new_affiliation_111->thisVf;
2441 for (ld = 0 ; ld < new_affiliation_111->vdCount; ld++)
2442 if (instance->vf_affiliation_111->map[ld].policy[thisVf] !=
2443 new_affiliation_111->map[ld].policy[thisVf]) {
2444 dev_warn(&instance->pdev->dev, "SR-IOV: "
2445 "Got new LD/VF affiliation for scsi%d\n",
2446 instance->host->host_no);
2447 memcpy(instance->vf_affiliation_111,
2448 new_affiliation_111,
2449 sizeof(struct MR_LD_VF_AFFILIATION_111));
2450 retval = 1;
2451 goto out;
2452 }
2453 }
2454 out:
2455 if (new_affiliation_111) {
2456 dma_free_coherent(&instance->pdev->dev,
2457 sizeof(struct MR_LD_VF_AFFILIATION_111),
2458 new_affiliation_111,
2459 new_affiliation_111_h);
2460 }
2461
2462 megasas_return_cmd(instance, cmd);
2463
2464 return retval;
2465 }
2466
megasas_get_ld_vf_affiliation_12(struct megasas_instance * instance,int initial)2467 static int megasas_get_ld_vf_affiliation_12(struct megasas_instance *instance,
2468 int initial)
2469 {
2470 struct megasas_cmd *cmd;
2471 struct megasas_dcmd_frame *dcmd;
2472 struct MR_LD_VF_AFFILIATION *new_affiliation = NULL;
2473 struct MR_LD_VF_MAP *newmap = NULL, *savedmap = NULL;
2474 dma_addr_t new_affiliation_h;
2475 int i, j, retval = 0, found = 0, doscan = 0;
2476 u8 thisVf;
2477
2478 cmd = megasas_get_cmd(instance);
2479
2480 if (!cmd) {
2481 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation12: "
2482 "Failed to get cmd for scsi%d\n",
2483 instance->host->host_no);
2484 return -ENOMEM;
2485 }
2486
2487 dcmd = &cmd->frame->dcmd;
2488
2489 if (!instance->vf_affiliation) {
2490 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2491 "affiliation for scsi%d\n", instance->host->host_no);
2492 megasas_return_cmd(instance, cmd);
2493 return -ENOMEM;
2494 }
2495
2496 if (initial)
2497 memset(instance->vf_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) *
2498 sizeof(struct MR_LD_VF_AFFILIATION));
2499 else {
2500 new_affiliation =
2501 dma_alloc_coherent(&instance->pdev->dev,
2502 (MAX_LOGICAL_DRIVES + 1) * sizeof(struct MR_LD_VF_AFFILIATION),
2503 &new_affiliation_h, GFP_KERNEL);
2504 if (!new_affiliation) {
2505 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2506 "memory for new affiliation for scsi%d\n",
2507 instance->host->host_no);
2508 megasas_return_cmd(instance, cmd);
2509 return -ENOMEM;
2510 }
2511 }
2512
2513 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2514
2515 dcmd->cmd = MFI_CMD_DCMD;
2516 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2517 dcmd->sge_count = 1;
2518 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2519 dcmd->timeout = 0;
2520 dcmd->pad_0 = 0;
2521 dcmd->data_xfer_len = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2522 sizeof(struct MR_LD_VF_AFFILIATION));
2523 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS);
2524
2525 if (initial)
2526 dcmd->sgl.sge32[0].phys_addr =
2527 cpu_to_le32(instance->vf_affiliation_h);
2528 else
2529 dcmd->sgl.sge32[0].phys_addr =
2530 cpu_to_le32(new_affiliation_h);
2531
2532 dcmd->sgl.sge32[0].length = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2533 sizeof(struct MR_LD_VF_AFFILIATION));
2534
2535 dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2536 "scsi%d\n", instance->host->host_no);
2537
2538
2539 if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2540 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2541 " failed with status 0x%x for scsi%d\n",
2542 dcmd->cmd_status, instance->host->host_no);
2543 retval = 1; /* Do a scan if we couldn't get affiliation */
2544 goto out;
2545 }
2546
2547 if (!initial) {
2548 if (!new_affiliation->ldCount) {
2549 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2550 "affiliation for passive path for scsi%d\n",
2551 instance->host->host_no);
2552 retval = 1;
2553 goto out;
2554 }
2555 newmap = new_affiliation->map;
2556 savedmap = instance->vf_affiliation->map;
2557 thisVf = new_affiliation->thisVf;
2558 for (i = 0 ; i < new_affiliation->ldCount; i++) {
2559 found = 0;
2560 for (j = 0; j < instance->vf_affiliation->ldCount;
2561 j++) {
2562 if (newmap->ref.targetId ==
2563 savedmap->ref.targetId) {
2564 found = 1;
2565 if (newmap->policy[thisVf] !=
2566 savedmap->policy[thisVf]) {
2567 doscan = 1;
2568 goto out;
2569 }
2570 }
2571 savedmap = (struct MR_LD_VF_MAP *)
2572 ((unsigned char *)savedmap +
2573 savedmap->size);
2574 }
2575 if (!found && newmap->policy[thisVf] !=
2576 MR_LD_ACCESS_HIDDEN) {
2577 doscan = 1;
2578 goto out;
2579 }
2580 newmap = (struct MR_LD_VF_MAP *)
2581 ((unsigned char *)newmap + newmap->size);
2582 }
2583
2584 newmap = new_affiliation->map;
2585 savedmap = instance->vf_affiliation->map;
2586
2587 for (i = 0 ; i < instance->vf_affiliation->ldCount; i++) {
2588 found = 0;
2589 for (j = 0 ; j < new_affiliation->ldCount; j++) {
2590 if (savedmap->ref.targetId ==
2591 newmap->ref.targetId) {
2592 found = 1;
2593 if (savedmap->policy[thisVf] !=
2594 newmap->policy[thisVf]) {
2595 doscan = 1;
2596 goto out;
2597 }
2598 }
2599 newmap = (struct MR_LD_VF_MAP *)
2600 ((unsigned char *)newmap +
2601 newmap->size);
2602 }
2603 if (!found && savedmap->policy[thisVf] !=
2604 MR_LD_ACCESS_HIDDEN) {
2605 doscan = 1;
2606 goto out;
2607 }
2608 savedmap = (struct MR_LD_VF_MAP *)
2609 ((unsigned char *)savedmap +
2610 savedmap->size);
2611 }
2612 }
2613 out:
2614 if (doscan) {
2615 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2616 "affiliation for scsi%d\n", instance->host->host_no);
2617 memcpy(instance->vf_affiliation, new_affiliation,
2618 new_affiliation->size);
2619 retval = 1;
2620 }
2621
2622 if (new_affiliation)
2623 dma_free_coherent(&instance->pdev->dev,
2624 (MAX_LOGICAL_DRIVES + 1) *
2625 sizeof(struct MR_LD_VF_AFFILIATION),
2626 new_affiliation, new_affiliation_h);
2627 megasas_return_cmd(instance, cmd);
2628
2629 return retval;
2630 }
2631
2632 /* This function will get the current SR-IOV LD/VF affiliation */
megasas_get_ld_vf_affiliation(struct megasas_instance * instance,int initial)2633 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
2634 int initial)
2635 {
2636 int retval;
2637
2638 if (instance->PlasmaFW111)
2639 retval = megasas_get_ld_vf_affiliation_111(instance, initial);
2640 else
2641 retval = megasas_get_ld_vf_affiliation_12(instance, initial);
2642 return retval;
2643 }
2644
2645 /* This function will tell FW to start the SR-IOV heartbeat */
megasas_sriov_start_heartbeat(struct megasas_instance * instance,int initial)2646 int megasas_sriov_start_heartbeat(struct megasas_instance *instance,
2647 int initial)
2648 {
2649 struct megasas_cmd *cmd;
2650 struct megasas_dcmd_frame *dcmd;
2651 int retval = 0;
2652
2653 cmd = megasas_get_cmd(instance);
2654
2655 if (!cmd) {
2656 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_sriov_start_heartbeat: "
2657 "Failed to get cmd for scsi%d\n",
2658 instance->host->host_no);
2659 return -ENOMEM;
2660 }
2661
2662 dcmd = &cmd->frame->dcmd;
2663
2664 if (initial) {
2665 instance->hb_host_mem =
2666 dma_alloc_coherent(&instance->pdev->dev,
2667 sizeof(struct MR_CTRL_HB_HOST_MEM),
2668 &instance->hb_host_mem_h,
2669 GFP_KERNEL);
2670 if (!instance->hb_host_mem) {
2671 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate"
2672 " memory for heartbeat host memory for scsi%d\n",
2673 instance->host->host_no);
2674 retval = -ENOMEM;
2675 goto out;
2676 }
2677 }
2678
2679 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2680
2681 dcmd->mbox.s[0] = cpu_to_le16(sizeof(struct MR_CTRL_HB_HOST_MEM));
2682 dcmd->cmd = MFI_CMD_DCMD;
2683 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2684 dcmd->sge_count = 1;
2685 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2686 dcmd->timeout = 0;
2687 dcmd->pad_0 = 0;
2688 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_CTRL_HB_HOST_MEM));
2689 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SHARED_HOST_MEM_ALLOC);
2690
2691 megasas_set_dma_settings(instance, dcmd, instance->hb_host_mem_h,
2692 sizeof(struct MR_CTRL_HB_HOST_MEM));
2693
2694 dev_warn(&instance->pdev->dev, "SR-IOV: Starting heartbeat for scsi%d\n",
2695 instance->host->host_no);
2696
2697 if ((instance->adapter_type != MFI_SERIES) &&
2698 !instance->mask_interrupts)
2699 retval = megasas_issue_blocked_cmd(instance, cmd,
2700 MEGASAS_ROUTINE_WAIT_TIME_VF);
2701 else
2702 retval = megasas_issue_polled(instance, cmd);
2703
2704 if (retval) {
2705 dev_warn(&instance->pdev->dev, "SR-IOV: MR_DCMD_CTRL_SHARED_HOST"
2706 "_MEM_ALLOC DCMD %s for scsi%d\n",
2707 (dcmd->cmd_status == MFI_STAT_INVALID_STATUS) ?
2708 "timed out" : "failed", instance->host->host_no);
2709 retval = 1;
2710 }
2711
2712 out:
2713 megasas_return_cmd(instance, cmd);
2714
2715 return retval;
2716 }
2717
2718 /* Handler for SR-IOV heartbeat */
megasas_sriov_heartbeat_handler(struct timer_list * t)2719 static void megasas_sriov_heartbeat_handler(struct timer_list *t)
2720 {
2721 struct megasas_instance *instance =
2722 from_timer(instance, t, sriov_heartbeat_timer);
2723
2724 if (instance->hb_host_mem->HB.fwCounter !=
2725 instance->hb_host_mem->HB.driverCounter) {
2726 instance->hb_host_mem->HB.driverCounter =
2727 instance->hb_host_mem->HB.fwCounter;
2728 mod_timer(&instance->sriov_heartbeat_timer,
2729 jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
2730 } else {
2731 dev_warn(&instance->pdev->dev, "SR-IOV: Heartbeat never "
2732 "completed for scsi%d\n", instance->host->host_no);
2733 schedule_work(&instance->work_init);
2734 }
2735 }
2736
2737 /**
2738 * megasas_wait_for_outstanding - Wait for all outstanding cmds
2739 * @instance: Adapter soft state
2740 *
2741 * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to
2742 * complete all its outstanding commands. Returns error if one or more IOs
2743 * are pending after this time period. It also marks the controller dead.
2744 */
megasas_wait_for_outstanding(struct megasas_instance * instance)2745 static int megasas_wait_for_outstanding(struct megasas_instance *instance)
2746 {
2747 int i, sl, outstanding;
2748 u32 reset_index;
2749 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
2750 unsigned long flags;
2751 struct list_head clist_local;
2752 struct megasas_cmd *reset_cmd;
2753 u32 fw_state;
2754
2755 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2756 dev_info(&instance->pdev->dev, "%s:%d HBA is killed.\n",
2757 __func__, __LINE__);
2758 return FAILED;
2759 }
2760
2761 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2762
2763 INIT_LIST_HEAD(&clist_local);
2764 spin_lock_irqsave(&instance->hba_lock, flags);
2765 list_splice_init(&instance->internal_reset_pending_q,
2766 &clist_local);
2767 spin_unlock_irqrestore(&instance->hba_lock, flags);
2768
2769 dev_notice(&instance->pdev->dev, "HBA reset wait ...\n");
2770 for (i = 0; i < wait_time; i++) {
2771 msleep(1000);
2772 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL)
2773 break;
2774 }
2775
2776 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2777 dev_notice(&instance->pdev->dev, "reset: Stopping HBA.\n");
2778 atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2779 return FAILED;
2780 }
2781
2782 reset_index = 0;
2783 while (!list_empty(&clist_local)) {
2784 reset_cmd = list_entry((&clist_local)->next,
2785 struct megasas_cmd, list);
2786 list_del_init(&reset_cmd->list);
2787 if (reset_cmd->scmd) {
2788 reset_cmd->scmd->result = DID_REQUEUE << 16;
2789 dev_notice(&instance->pdev->dev, "%d:%p reset [%02x]\n",
2790 reset_index, reset_cmd,
2791 reset_cmd->scmd->cmnd[0]);
2792
2793 scsi_done(reset_cmd->scmd);
2794 megasas_return_cmd(instance, reset_cmd);
2795 } else if (reset_cmd->sync_cmd) {
2796 dev_notice(&instance->pdev->dev, "%p synch cmds"
2797 "reset queue\n",
2798 reset_cmd);
2799
2800 reset_cmd->cmd_status_drv = DCMD_INIT;
2801 instance->instancet->fire_cmd(instance,
2802 reset_cmd->frame_phys_addr,
2803 0, instance->reg_set);
2804 } else {
2805 dev_notice(&instance->pdev->dev, "%p unexpected"
2806 "cmds lst\n",
2807 reset_cmd);
2808 }
2809 reset_index++;
2810 }
2811
2812 return SUCCESS;
2813 }
2814
2815 for (i = 0; i < resetwaittime; i++) {
2816 outstanding = atomic_read(&instance->fw_outstanding);
2817
2818 if (!outstanding)
2819 break;
2820
2821 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
2822 dev_notice(&instance->pdev->dev, "[%2d]waiting for %d "
2823 "commands to complete\n",i,outstanding);
2824 /*
2825 * Call cmd completion routine. Cmd to be
2826 * be completed directly without depending on isr.
2827 */
2828 megasas_complete_cmd_dpc((unsigned long)instance);
2829 }
2830
2831 msleep(1000);
2832 }
2833
2834 i = 0;
2835 outstanding = atomic_read(&instance->fw_outstanding);
2836 fw_state = instance->instancet->read_fw_status_reg(instance) & MFI_STATE_MASK;
2837
2838 if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2839 goto no_outstanding;
2840
2841 if (instance->disableOnlineCtrlReset)
2842 goto kill_hba_and_failed;
2843 do {
2844 if ((fw_state == MFI_STATE_FAULT) || atomic_read(&instance->fw_outstanding)) {
2845 dev_info(&instance->pdev->dev,
2846 "%s:%d waiting_for_outstanding: before issue OCR. FW state = 0x%x, outstanding 0x%x\n",
2847 __func__, __LINE__, fw_state, atomic_read(&instance->fw_outstanding));
2848 if (i == 3)
2849 goto kill_hba_and_failed;
2850 megasas_do_ocr(instance);
2851
2852 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2853 dev_info(&instance->pdev->dev, "%s:%d OCR failed and HBA is killed.\n",
2854 __func__, __LINE__);
2855 return FAILED;
2856 }
2857 dev_info(&instance->pdev->dev, "%s:%d waiting_for_outstanding: after issue OCR.\n",
2858 __func__, __LINE__);
2859
2860 for (sl = 0; sl < 10; sl++)
2861 msleep(500);
2862
2863 outstanding = atomic_read(&instance->fw_outstanding);
2864
2865 fw_state = instance->instancet->read_fw_status_reg(instance) & MFI_STATE_MASK;
2866 if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2867 goto no_outstanding;
2868 }
2869 i++;
2870 } while (i <= 3);
2871
2872 no_outstanding:
2873
2874 dev_info(&instance->pdev->dev, "%s:%d no more pending commands remain after reset handling.\n",
2875 __func__, __LINE__);
2876 return SUCCESS;
2877
2878 kill_hba_and_failed:
2879
2880 /* Reset not supported, kill adapter */
2881 dev_info(&instance->pdev->dev, "%s:%d killing adapter scsi%d"
2882 " disableOnlineCtrlReset %d fw_outstanding %d \n",
2883 __func__, __LINE__, instance->host->host_no, instance->disableOnlineCtrlReset,
2884 atomic_read(&instance->fw_outstanding));
2885 megasas_dump_pending_frames(instance);
2886 megaraid_sas_kill_hba(instance);
2887
2888 return FAILED;
2889 }
2890
2891 /**
2892 * megasas_generic_reset - Generic reset routine
2893 * @scmd: Mid-layer SCSI command
2894 *
2895 * This routine implements a generic reset handler for device, bus and host
2896 * reset requests. Device, bus and host specific reset handlers can use this
2897 * function after they do their specific tasks.
2898 */
megasas_generic_reset(struct scsi_cmnd * scmd)2899 static int megasas_generic_reset(struct scsi_cmnd *scmd)
2900 {
2901 int ret_val;
2902 struct megasas_instance *instance;
2903
2904 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2905
2906 scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n",
2907 scmd->cmnd[0], scmd->retries);
2908
2909 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2910 dev_err(&instance->pdev->dev, "cannot recover from previous reset failures\n");
2911 return FAILED;
2912 }
2913
2914 ret_val = megasas_wait_for_outstanding(instance);
2915 if (ret_val == SUCCESS)
2916 dev_notice(&instance->pdev->dev, "reset successful\n");
2917 else
2918 dev_err(&instance->pdev->dev, "failed to do reset\n");
2919
2920 return ret_val;
2921 }
2922
2923 /**
2924 * megasas_reset_timer - quiesce the adapter if required
2925 * @scmd: scsi cmnd
2926 *
2927 * Sets the FW busy flag and reduces the host->can_queue if the
2928 * cmd has not been completed within the timeout period.
2929 */
megasas_reset_timer(struct scsi_cmnd * scmd)2930 static enum scsi_timeout_action megasas_reset_timer(struct scsi_cmnd *scmd)
2931 {
2932 struct megasas_instance *instance;
2933 unsigned long flags;
2934
2935 if (time_after(jiffies, scmd->jiffies_at_alloc +
2936 (scmd_timeout * 2) * HZ)) {
2937 return SCSI_EH_NOT_HANDLED;
2938 }
2939
2940 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2941 if (!(instance->flag & MEGASAS_FW_BUSY)) {
2942 /* FW is busy, throttle IO */
2943 spin_lock_irqsave(instance->host->host_lock, flags);
2944
2945 instance->host->can_queue = instance->throttlequeuedepth;
2946 instance->last_time = jiffies;
2947 instance->flag |= MEGASAS_FW_BUSY;
2948
2949 spin_unlock_irqrestore(instance->host->host_lock, flags);
2950 }
2951 return SCSI_EH_RESET_TIMER;
2952 }
2953
2954 /**
2955 * megasas_dump - This function will print hexdump of provided buffer.
2956 * @buf: Buffer to be dumped
2957 * @sz: Size in bytes
2958 * @format: Different formats of dumping e.g. format=n will
2959 * cause only 'n' 32 bit words to be dumped in a single
2960 * line.
2961 */
2962 inline void
megasas_dump(void * buf,int sz,int format)2963 megasas_dump(void *buf, int sz, int format)
2964 {
2965 int i;
2966 __le32 *buf_loc = (__le32 *)buf;
2967
2968 for (i = 0; i < (sz / sizeof(__le32)); i++) {
2969 if ((i % format) == 0) {
2970 if (i != 0)
2971 printk(KERN_CONT "\n");
2972 printk(KERN_CONT "%08x: ", (i * 4));
2973 }
2974 printk(KERN_CONT "%08x ", le32_to_cpu(buf_loc[i]));
2975 }
2976 printk(KERN_CONT "\n");
2977 }
2978
2979 /**
2980 * megasas_dump_reg_set - This function will print hexdump of register set
2981 * @reg_set: Register set to be dumped
2982 */
2983 inline void
megasas_dump_reg_set(void __iomem * reg_set)2984 megasas_dump_reg_set(void __iomem *reg_set)
2985 {
2986 unsigned int i, sz = 256;
2987 u32 __iomem *reg = (u32 __iomem *)reg_set;
2988
2989 for (i = 0; i < (sz / sizeof(u32)); i++)
2990 printk("%08x: %08x\n", (i * 4), readl(®[i]));
2991 }
2992
2993 /**
2994 * megasas_dump_fusion_io - This function will print key details
2995 * of SCSI IO
2996 * @scmd: SCSI command pointer of SCSI IO
2997 */
2998 void
megasas_dump_fusion_io(struct scsi_cmnd * scmd)2999 megasas_dump_fusion_io(struct scsi_cmnd *scmd)
3000 {
3001 struct megasas_cmd_fusion *cmd = megasas_priv(scmd)->cmd_priv;
3002 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
3003 struct megasas_instance *instance;
3004
3005 instance = (struct megasas_instance *)scmd->device->host->hostdata;
3006
3007 scmd_printk(KERN_INFO, scmd,
3008 "scmd: (0x%p) retries: 0x%x allowed: 0x%x\n",
3009 scmd, scmd->retries, scmd->allowed);
3010 scsi_print_command(scmd);
3011
3012 if (cmd) {
3013 req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc;
3014 scmd_printk(KERN_INFO, scmd, "Request descriptor details:\n");
3015 scmd_printk(KERN_INFO, scmd,
3016 "RequestFlags:0x%x MSIxIndex:0x%x SMID:0x%x LMID:0x%x DevHandle:0x%x\n",
3017 req_desc->SCSIIO.RequestFlags,
3018 req_desc->SCSIIO.MSIxIndex, req_desc->SCSIIO.SMID,
3019 req_desc->SCSIIO.LMID, req_desc->SCSIIO.DevHandle);
3020
3021 printk(KERN_INFO "IO request frame:\n");
3022 megasas_dump(cmd->io_request,
3023 MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE, 8);
3024 printk(KERN_INFO "Chain frame:\n");
3025 megasas_dump(cmd->sg_frame,
3026 instance->max_chain_frame_sz, 8);
3027 }
3028
3029 }
3030
3031 /*
3032 * megasas_dump_sys_regs - This function will dump system registers through
3033 * sysfs.
3034 * @reg_set: Pointer to System register set.
3035 * @buf: Buffer to which output is to be written.
3036 * @return: Number of bytes written to buffer.
3037 */
3038 static inline ssize_t
megasas_dump_sys_regs(void __iomem * reg_set,char * buf)3039 megasas_dump_sys_regs(void __iomem *reg_set, char *buf)
3040 {
3041 unsigned int i, sz = 256;
3042 int bytes_wrote = 0;
3043 char *loc = (char *)buf;
3044 u32 __iomem *reg = (u32 __iomem *)reg_set;
3045
3046 for (i = 0; i < sz / sizeof(u32); i++) {
3047 bytes_wrote += scnprintf(loc + bytes_wrote,
3048 PAGE_SIZE - bytes_wrote,
3049 "%08x: %08x\n", (i * 4),
3050 readl(®[i]));
3051 }
3052 return bytes_wrote;
3053 }
3054
3055 /**
3056 * megasas_reset_bus_host - Bus & host reset handler entry point
3057 * @scmd: Mid-layer SCSI command
3058 */
megasas_reset_bus_host(struct scsi_cmnd * scmd)3059 static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
3060 {
3061 int ret;
3062 struct megasas_instance *instance;
3063
3064 instance = (struct megasas_instance *)scmd->device->host->hostdata;
3065
3066 scmd_printk(KERN_INFO, scmd,
3067 "OCR is requested due to IO timeout!!\n");
3068
3069 scmd_printk(KERN_INFO, scmd,
3070 "SCSI host state: %d SCSI host busy: %d FW outstanding: %d\n",
3071 scmd->device->host->shost_state,
3072 scsi_host_busy(scmd->device->host),
3073 atomic_read(&instance->fw_outstanding));
3074 /*
3075 * First wait for all commands to complete
3076 */
3077 if (instance->adapter_type == MFI_SERIES) {
3078 ret = megasas_generic_reset(scmd);
3079 } else {
3080 megasas_dump_fusion_io(scmd);
3081 ret = megasas_reset_fusion(scmd->device->host,
3082 SCSIIO_TIMEOUT_OCR);
3083 }
3084
3085 return ret;
3086 }
3087
3088 /**
3089 * megasas_task_abort - Issues task abort request to firmware
3090 * (supported only for fusion adapters)
3091 * @scmd: SCSI command pointer
3092 */
megasas_task_abort(struct scsi_cmnd * scmd)3093 static int megasas_task_abort(struct scsi_cmnd *scmd)
3094 {
3095 int ret;
3096 struct megasas_instance *instance;
3097
3098 instance = (struct megasas_instance *)scmd->device->host->hostdata;
3099
3100 if (instance->adapter_type != MFI_SERIES)
3101 ret = megasas_task_abort_fusion(scmd);
3102 else {
3103 sdev_printk(KERN_NOTICE, scmd->device, "TASK ABORT not supported\n");
3104 ret = FAILED;
3105 }
3106
3107 return ret;
3108 }
3109
3110 /**
3111 * megasas_reset_target: Issues target reset request to firmware
3112 * (supported only for fusion adapters)
3113 * @scmd: SCSI command pointer
3114 */
megasas_reset_target(struct scsi_cmnd * scmd)3115 static int megasas_reset_target(struct scsi_cmnd *scmd)
3116 {
3117 int ret;
3118 struct megasas_instance *instance;
3119
3120 instance = (struct megasas_instance *)scmd->device->host->hostdata;
3121
3122 if (instance->adapter_type != MFI_SERIES)
3123 ret = megasas_reset_target_fusion(scmd);
3124 else {
3125 sdev_printk(KERN_NOTICE, scmd->device, "TARGET RESET not supported\n");
3126 ret = FAILED;
3127 }
3128
3129 return ret;
3130 }
3131
3132 /**
3133 * megasas_bios_param - Returns disk geometry for a disk
3134 * @sdev: device handle
3135 * @bdev: block device
3136 * @capacity: drive capacity
3137 * @geom: geometry parameters
3138 */
3139 static int
megasas_bios_param(struct scsi_device * sdev,struct block_device * bdev,sector_t capacity,int geom[])3140 megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev,
3141 sector_t capacity, int geom[])
3142 {
3143 int heads;
3144 int sectors;
3145 sector_t cylinders;
3146 unsigned long tmp;
3147
3148 /* Default heads (64) & sectors (32) */
3149 heads = 64;
3150 sectors = 32;
3151
3152 tmp = heads * sectors;
3153 cylinders = capacity;
3154
3155 sector_div(cylinders, tmp);
3156
3157 /*
3158 * Handle extended translation size for logical drives > 1Gb
3159 */
3160
3161 if (capacity >= 0x200000) {
3162 heads = 255;
3163 sectors = 63;
3164 tmp = heads*sectors;
3165 cylinders = capacity;
3166 sector_div(cylinders, tmp);
3167 }
3168
3169 geom[0] = heads;
3170 geom[1] = sectors;
3171 geom[2] = cylinders;
3172
3173 return 0;
3174 }
3175
megasas_map_queues(struct Scsi_Host * shost)3176 static void megasas_map_queues(struct Scsi_Host *shost)
3177 {
3178 struct megasas_instance *instance;
3179 int qoff = 0, offset;
3180 struct blk_mq_queue_map *map;
3181
3182 instance = (struct megasas_instance *)shost->hostdata;
3183
3184 if (shost->nr_hw_queues == 1)
3185 return;
3186
3187 offset = instance->low_latency_index_start;
3188
3189 /* Setup Default hctx */
3190 map = &shost->tag_set.map[HCTX_TYPE_DEFAULT];
3191 map->nr_queues = instance->msix_vectors - offset;
3192 map->queue_offset = 0;
3193 blk_mq_pci_map_queues(map, instance->pdev, offset);
3194 qoff += map->nr_queues;
3195 offset += map->nr_queues;
3196
3197 /* we never use READ queue, so can't cheat blk-mq */
3198 shost->tag_set.map[HCTX_TYPE_READ].nr_queues = 0;
3199
3200 /* Setup Poll hctx */
3201 map = &shost->tag_set.map[HCTX_TYPE_POLL];
3202 map->nr_queues = instance->iopoll_q_count;
3203 if (map->nr_queues) {
3204 /*
3205 * The poll queue(s) doesn't have an IRQ (and hence IRQ
3206 * affinity), so use the regular blk-mq cpu mapping
3207 */
3208 map->queue_offset = qoff;
3209 blk_mq_map_queues(map);
3210 }
3211 }
3212
3213 static void megasas_aen_polling(struct work_struct *work);
3214
3215 /**
3216 * megasas_service_aen - Processes an event notification
3217 * @instance: Adapter soft state
3218 * @cmd: AEN command completed by the ISR
3219 *
3220 * For AEN, driver sends a command down to FW that is held by the FW till an
3221 * event occurs. When an event of interest occurs, FW completes the command
3222 * that it was previously holding.
3223 *
3224 * This routines sends SIGIO signal to processes that have registered with the
3225 * driver for AEN.
3226 */
3227 static void
megasas_service_aen(struct megasas_instance * instance,struct megasas_cmd * cmd)3228 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd)
3229 {
3230 unsigned long flags;
3231
3232 /*
3233 * Don't signal app if it is just an aborted previously registered aen
3234 */
3235 if ((!cmd->abort_aen) && (instance->unload == 0)) {
3236 spin_lock_irqsave(&poll_aen_lock, flags);
3237 megasas_poll_wait_aen = 1;
3238 spin_unlock_irqrestore(&poll_aen_lock, flags);
3239 wake_up(&megasas_poll_wait);
3240 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN);
3241 }
3242 else
3243 cmd->abort_aen = 0;
3244
3245 instance->aen_cmd = NULL;
3246
3247 megasas_return_cmd(instance, cmd);
3248
3249 if ((instance->unload == 0) &&
3250 ((instance->issuepend_done == 1))) {
3251 struct megasas_aen_event *ev;
3252
3253 ev = kzalloc(sizeof(*ev), GFP_ATOMIC);
3254 if (!ev) {
3255 dev_err(&instance->pdev->dev, "megasas_service_aen: out of memory\n");
3256 } else {
3257 ev->instance = instance;
3258 instance->ev = ev;
3259 INIT_DELAYED_WORK(&ev->hotplug_work,
3260 megasas_aen_polling);
3261 schedule_delayed_work(&ev->hotplug_work, 0);
3262 }
3263 }
3264 }
3265
3266 static ssize_t
fw_crash_buffer_store(struct device * cdev,struct device_attribute * attr,const char * buf,size_t count)3267 fw_crash_buffer_store(struct device *cdev,
3268 struct device_attribute *attr, const char *buf, size_t count)
3269 {
3270 struct Scsi_Host *shost = class_to_shost(cdev);
3271 struct megasas_instance *instance =
3272 (struct megasas_instance *) shost->hostdata;
3273 int val = 0;
3274
3275 if (kstrtoint(buf, 0, &val) != 0)
3276 return -EINVAL;
3277
3278 mutex_lock(&instance->crashdump_lock);
3279 instance->fw_crash_buffer_offset = val;
3280 mutex_unlock(&instance->crashdump_lock);
3281 return strlen(buf);
3282 }
3283
3284 static ssize_t
fw_crash_buffer_show(struct device * cdev,struct device_attribute * attr,char * buf)3285 fw_crash_buffer_show(struct device *cdev,
3286 struct device_attribute *attr, char *buf)
3287 {
3288 struct Scsi_Host *shost = class_to_shost(cdev);
3289 struct megasas_instance *instance =
3290 (struct megasas_instance *) shost->hostdata;
3291 u32 size;
3292 unsigned long dmachunk = CRASH_DMA_BUF_SIZE;
3293 unsigned long chunk_left_bytes;
3294 unsigned long src_addr;
3295 u32 buff_offset;
3296
3297 mutex_lock(&instance->crashdump_lock);
3298 buff_offset = instance->fw_crash_buffer_offset;
3299 if (!instance->crash_dump_buf ||
3300 !((instance->fw_crash_state == AVAILABLE) ||
3301 (instance->fw_crash_state == COPYING))) {
3302 dev_err(&instance->pdev->dev,
3303 "Firmware crash dump is not available\n");
3304 mutex_unlock(&instance->crashdump_lock);
3305 return -EINVAL;
3306 }
3307
3308 if (buff_offset > (instance->fw_crash_buffer_size * dmachunk)) {
3309 dev_err(&instance->pdev->dev,
3310 "Firmware crash dump offset is out of range\n");
3311 mutex_unlock(&instance->crashdump_lock);
3312 return 0;
3313 }
3314
3315 size = (instance->fw_crash_buffer_size * dmachunk) - buff_offset;
3316 chunk_left_bytes = dmachunk - (buff_offset % dmachunk);
3317 size = (size > chunk_left_bytes) ? chunk_left_bytes : size;
3318 size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size;
3319
3320 src_addr = (unsigned long)instance->crash_buf[buff_offset / dmachunk] +
3321 (buff_offset % dmachunk);
3322 memcpy(buf, (void *)src_addr, size);
3323 mutex_unlock(&instance->crashdump_lock);
3324
3325 return size;
3326 }
3327
3328 static ssize_t
fw_crash_buffer_size_show(struct device * cdev,struct device_attribute * attr,char * buf)3329 fw_crash_buffer_size_show(struct device *cdev,
3330 struct device_attribute *attr, char *buf)
3331 {
3332 struct Scsi_Host *shost = class_to_shost(cdev);
3333 struct megasas_instance *instance =
3334 (struct megasas_instance *) shost->hostdata;
3335
3336 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)
3337 ((instance->fw_crash_buffer_size) * 1024 * 1024)/PAGE_SIZE);
3338 }
3339
3340 static ssize_t
fw_crash_state_store(struct device * cdev,struct device_attribute * attr,const char * buf,size_t count)3341 fw_crash_state_store(struct device *cdev,
3342 struct device_attribute *attr, const char *buf, size_t count)
3343 {
3344 struct Scsi_Host *shost = class_to_shost(cdev);
3345 struct megasas_instance *instance =
3346 (struct megasas_instance *) shost->hostdata;
3347 int val = 0;
3348
3349 if (kstrtoint(buf, 0, &val) != 0)
3350 return -EINVAL;
3351
3352 if ((val <= AVAILABLE || val > COPY_ERROR)) {
3353 dev_err(&instance->pdev->dev, "application updates invalid "
3354 "firmware crash state\n");
3355 return -EINVAL;
3356 }
3357
3358 instance->fw_crash_state = val;
3359
3360 if ((val == COPIED) || (val == COPY_ERROR)) {
3361 mutex_lock(&instance->crashdump_lock);
3362 megasas_free_host_crash_buffer(instance);
3363 mutex_unlock(&instance->crashdump_lock);
3364 if (val == COPY_ERROR)
3365 dev_info(&instance->pdev->dev, "application failed to "
3366 "copy Firmware crash dump\n");
3367 else
3368 dev_info(&instance->pdev->dev, "Firmware crash dump "
3369 "copied successfully\n");
3370 }
3371 return strlen(buf);
3372 }
3373
3374 static ssize_t
fw_crash_state_show(struct device * cdev,struct device_attribute * attr,char * buf)3375 fw_crash_state_show(struct device *cdev,
3376 struct device_attribute *attr, char *buf)
3377 {
3378 struct Scsi_Host *shost = class_to_shost(cdev);
3379 struct megasas_instance *instance =
3380 (struct megasas_instance *) shost->hostdata;
3381
3382 return snprintf(buf, PAGE_SIZE, "%d\n", instance->fw_crash_state);
3383 }
3384
3385 static ssize_t
page_size_show(struct device * cdev,struct device_attribute * attr,char * buf)3386 page_size_show(struct device *cdev,
3387 struct device_attribute *attr, char *buf)
3388 {
3389 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)PAGE_SIZE - 1);
3390 }
3391
3392 static ssize_t
ldio_outstanding_show(struct device * cdev,struct device_attribute * attr,char * buf)3393 ldio_outstanding_show(struct device *cdev, struct device_attribute *attr,
3394 char *buf)
3395 {
3396 struct Scsi_Host *shost = class_to_shost(cdev);
3397 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3398
3399 return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->ldio_outstanding));
3400 }
3401
3402 static ssize_t
fw_cmds_outstanding_show(struct device * cdev,struct device_attribute * attr,char * buf)3403 fw_cmds_outstanding_show(struct device *cdev,
3404 struct device_attribute *attr, char *buf)
3405 {
3406 struct Scsi_Host *shost = class_to_shost(cdev);
3407 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3408
3409 return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->fw_outstanding));
3410 }
3411
3412 static ssize_t
enable_sdev_max_qd_show(struct device * cdev,struct device_attribute * attr,char * buf)3413 enable_sdev_max_qd_show(struct device *cdev,
3414 struct device_attribute *attr, char *buf)
3415 {
3416 struct Scsi_Host *shost = class_to_shost(cdev);
3417 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3418
3419 return snprintf(buf, PAGE_SIZE, "%d\n", instance->enable_sdev_max_qd);
3420 }
3421
3422 static ssize_t
enable_sdev_max_qd_store(struct device * cdev,struct device_attribute * attr,const char * buf,size_t count)3423 enable_sdev_max_qd_store(struct device *cdev,
3424 struct device_attribute *attr, const char *buf, size_t count)
3425 {
3426 struct Scsi_Host *shost = class_to_shost(cdev);
3427 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3428 u32 val = 0;
3429 bool is_target_prop;
3430 int ret_target_prop = DCMD_FAILED;
3431 struct scsi_device *sdev;
3432
3433 if (kstrtou32(buf, 0, &val) != 0) {
3434 pr_err("megasas: could not set enable_sdev_max_qd\n");
3435 return -EINVAL;
3436 }
3437
3438 mutex_lock(&instance->reset_mutex);
3439 if (val)
3440 instance->enable_sdev_max_qd = true;
3441 else
3442 instance->enable_sdev_max_qd = false;
3443
3444 shost_for_each_device(sdev, shost) {
3445 ret_target_prop = megasas_get_target_prop(instance, sdev);
3446 is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false;
3447 megasas_set_fw_assisted_qd(sdev, is_target_prop);
3448 }
3449 mutex_unlock(&instance->reset_mutex);
3450
3451 return strlen(buf);
3452 }
3453
3454 static ssize_t
dump_system_regs_show(struct device * cdev,struct device_attribute * attr,char * buf)3455 dump_system_regs_show(struct device *cdev,
3456 struct device_attribute *attr, char *buf)
3457 {
3458 struct Scsi_Host *shost = class_to_shost(cdev);
3459 struct megasas_instance *instance =
3460 (struct megasas_instance *)shost->hostdata;
3461
3462 return megasas_dump_sys_regs(instance->reg_set, buf);
3463 }
3464
3465 static ssize_t
raid_map_id_show(struct device * cdev,struct device_attribute * attr,char * buf)3466 raid_map_id_show(struct device *cdev, struct device_attribute *attr,
3467 char *buf)
3468 {
3469 struct Scsi_Host *shost = class_to_shost(cdev);
3470 struct megasas_instance *instance =
3471 (struct megasas_instance *)shost->hostdata;
3472
3473 return snprintf(buf, PAGE_SIZE, "%ld\n",
3474 (unsigned long)instance->map_id);
3475 }
3476
3477 static DEVICE_ATTR_RW(fw_crash_buffer);
3478 static DEVICE_ATTR_RO(fw_crash_buffer_size);
3479 static DEVICE_ATTR_RW(fw_crash_state);
3480 static DEVICE_ATTR_RO(page_size);
3481 static DEVICE_ATTR_RO(ldio_outstanding);
3482 static DEVICE_ATTR_RO(fw_cmds_outstanding);
3483 static DEVICE_ATTR_RW(enable_sdev_max_qd);
3484 static DEVICE_ATTR_RO(dump_system_regs);
3485 static DEVICE_ATTR_RO(raid_map_id);
3486
3487 static struct attribute *megaraid_host_attrs[] = {
3488 &dev_attr_fw_crash_buffer_size.attr,
3489 &dev_attr_fw_crash_buffer.attr,
3490 &dev_attr_fw_crash_state.attr,
3491 &dev_attr_page_size.attr,
3492 &dev_attr_ldio_outstanding.attr,
3493 &dev_attr_fw_cmds_outstanding.attr,
3494 &dev_attr_enable_sdev_max_qd.attr,
3495 &dev_attr_dump_system_regs.attr,
3496 &dev_attr_raid_map_id.attr,
3497 NULL,
3498 };
3499
3500 ATTRIBUTE_GROUPS(megaraid_host);
3501
3502 /*
3503 * Scsi host template for megaraid_sas driver
3504 */
3505 static const struct scsi_host_template megasas_template = {
3506
3507 .module = THIS_MODULE,
3508 .name = "Avago SAS based MegaRAID driver",
3509 .proc_name = "megaraid_sas",
3510 .slave_configure = megasas_slave_configure,
3511 .slave_alloc = megasas_slave_alloc,
3512 .slave_destroy = megasas_slave_destroy,
3513 .queuecommand = megasas_queue_command,
3514 .eh_target_reset_handler = megasas_reset_target,
3515 .eh_abort_handler = megasas_task_abort,
3516 .eh_host_reset_handler = megasas_reset_bus_host,
3517 .eh_timed_out = megasas_reset_timer,
3518 .shost_groups = megaraid_host_groups,
3519 .bios_param = megasas_bios_param,
3520 .map_queues = megasas_map_queues,
3521 .mq_poll = megasas_blk_mq_poll,
3522 .change_queue_depth = scsi_change_queue_depth,
3523 .max_segment_size = 0xffffffff,
3524 .cmd_size = sizeof(struct megasas_cmd_priv),
3525 };
3526
3527 /**
3528 * megasas_complete_int_cmd - Completes an internal command
3529 * @instance: Adapter soft state
3530 * @cmd: Command to be completed
3531 *
3532 * The megasas_issue_blocked_cmd() function waits for a command to complete
3533 * after it issues a command. This function wakes up that waiting routine by
3534 * calling wake_up() on the wait queue.
3535 */
3536 static void
megasas_complete_int_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd)3537 megasas_complete_int_cmd(struct megasas_instance *instance,
3538 struct megasas_cmd *cmd)
3539 {
3540 if (cmd->cmd_status_drv == DCMD_INIT)
3541 cmd->cmd_status_drv =
3542 (cmd->frame->io.cmd_status == MFI_STAT_OK) ?
3543 DCMD_SUCCESS : DCMD_FAILED;
3544
3545 wake_up(&instance->int_cmd_wait_q);
3546 }
3547
3548 /**
3549 * megasas_complete_abort - Completes aborting a command
3550 * @instance: Adapter soft state
3551 * @cmd: Cmd that was issued to abort another cmd
3552 *
3553 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q
3554 * after it issues an abort on a previously issued command. This function
3555 * wakes up all functions waiting on the same wait queue.
3556 */
3557 static void
megasas_complete_abort(struct megasas_instance * instance,struct megasas_cmd * cmd)3558 megasas_complete_abort(struct megasas_instance *instance,
3559 struct megasas_cmd *cmd)
3560 {
3561 if (cmd->sync_cmd) {
3562 cmd->sync_cmd = 0;
3563 cmd->cmd_status_drv = DCMD_SUCCESS;
3564 wake_up(&instance->abort_cmd_wait_q);
3565 }
3566 }
3567
3568 static void
megasas_set_ld_removed_by_fw(struct megasas_instance * instance)3569 megasas_set_ld_removed_by_fw(struct megasas_instance *instance)
3570 {
3571 uint i;
3572
3573 for (i = 0; (i < MEGASAS_MAX_LD_IDS); i++) {
3574 if (instance->ld_ids_prev[i] != 0xff &&
3575 instance->ld_ids_from_raidmap[i] == 0xff) {
3576 if (megasas_dbg_lvl & LD_PD_DEBUG)
3577 dev_info(&instance->pdev->dev,
3578 "LD target ID %d removed from RAID map\n", i);
3579 instance->ld_tgtid_status[i] = LD_TARGET_ID_DELETED;
3580 }
3581 }
3582 }
3583
3584 /**
3585 * megasas_complete_cmd - Completes a command
3586 * @instance: Adapter soft state
3587 * @cmd: Command to be completed
3588 * @alt_status: If non-zero, use this value as status to
3589 * SCSI mid-layer instead of the value returned
3590 * by the FW. This should be used if caller wants
3591 * an alternate status (as in the case of aborted
3592 * commands)
3593 */
3594 void
megasas_complete_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd,u8 alt_status)3595 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
3596 u8 alt_status)
3597 {
3598 int exception = 0;
3599 struct megasas_header *hdr = &cmd->frame->hdr;
3600 unsigned long flags;
3601 struct fusion_context *fusion = instance->ctrl_context;
3602 u32 opcode, status;
3603
3604 /* flag for the retry reset */
3605 cmd->retry_for_fw_reset = 0;
3606
3607 if (cmd->scmd)
3608 megasas_priv(cmd->scmd)->cmd_priv = NULL;
3609
3610 switch (hdr->cmd) {
3611 case MFI_CMD_INVALID:
3612 /* Some older 1068 controller FW may keep a pended
3613 MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel
3614 when booting the kdump kernel. Ignore this command to
3615 prevent a kernel panic on shutdown of the kdump kernel. */
3616 dev_warn(&instance->pdev->dev, "MFI_CMD_INVALID command "
3617 "completed\n");
3618 dev_warn(&instance->pdev->dev, "If you have a controller "
3619 "other than PERC5, please upgrade your firmware\n");
3620 break;
3621 case MFI_CMD_PD_SCSI_IO:
3622 case MFI_CMD_LD_SCSI_IO:
3623
3624 /*
3625 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been
3626 * issued either through an IO path or an IOCTL path. If it
3627 * was via IOCTL, we will send it to internal completion.
3628 */
3629 if (cmd->sync_cmd) {
3630 cmd->sync_cmd = 0;
3631 megasas_complete_int_cmd(instance, cmd);
3632 break;
3633 }
3634 fallthrough;
3635
3636 case MFI_CMD_LD_READ:
3637 case MFI_CMD_LD_WRITE:
3638
3639 if (alt_status) {
3640 cmd->scmd->result = alt_status << 16;
3641 exception = 1;
3642 }
3643
3644 if (exception) {
3645
3646 atomic_dec(&instance->fw_outstanding);
3647
3648 scsi_dma_unmap(cmd->scmd);
3649 scsi_done(cmd->scmd);
3650 megasas_return_cmd(instance, cmd);
3651
3652 break;
3653 }
3654
3655 switch (hdr->cmd_status) {
3656
3657 case MFI_STAT_OK:
3658 cmd->scmd->result = DID_OK << 16;
3659 break;
3660
3661 case MFI_STAT_SCSI_IO_FAILED:
3662 case MFI_STAT_LD_INIT_IN_PROGRESS:
3663 cmd->scmd->result =
3664 (DID_ERROR << 16) | hdr->scsi_status;
3665 break;
3666
3667 case MFI_STAT_SCSI_DONE_WITH_ERROR:
3668
3669 cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status;
3670
3671 if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) {
3672 memset(cmd->scmd->sense_buffer, 0,
3673 SCSI_SENSE_BUFFERSIZE);
3674 memcpy(cmd->scmd->sense_buffer, cmd->sense,
3675 hdr->sense_len);
3676 }
3677
3678 break;
3679
3680 case MFI_STAT_LD_OFFLINE:
3681 case MFI_STAT_DEVICE_NOT_FOUND:
3682 cmd->scmd->result = DID_BAD_TARGET << 16;
3683 break;
3684
3685 default:
3686 dev_printk(KERN_DEBUG, &instance->pdev->dev, "MFI FW status %#x\n",
3687 hdr->cmd_status);
3688 cmd->scmd->result = DID_ERROR << 16;
3689 break;
3690 }
3691
3692 atomic_dec(&instance->fw_outstanding);
3693
3694 scsi_dma_unmap(cmd->scmd);
3695 scsi_done(cmd->scmd);
3696 megasas_return_cmd(instance, cmd);
3697
3698 break;
3699
3700 case MFI_CMD_SMP:
3701 case MFI_CMD_STP:
3702 case MFI_CMD_NVME:
3703 case MFI_CMD_TOOLBOX:
3704 megasas_complete_int_cmd(instance, cmd);
3705 break;
3706
3707 case MFI_CMD_DCMD:
3708 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
3709 /* Check for LD map update */
3710 if ((opcode == MR_DCMD_LD_MAP_GET_INFO)
3711 && (cmd->frame->dcmd.mbox.b[1] == 1)) {
3712 fusion->fast_path_io = 0;
3713 spin_lock_irqsave(instance->host->host_lock, flags);
3714 status = cmd->frame->hdr.cmd_status;
3715 instance->map_update_cmd = NULL;
3716 if (status != MFI_STAT_OK) {
3717 if (status != MFI_STAT_NOT_FOUND)
3718 dev_warn(&instance->pdev->dev, "map syncfailed, status = 0x%x\n",
3719 cmd->frame->hdr.cmd_status);
3720 else {
3721 megasas_return_cmd(instance, cmd);
3722 spin_unlock_irqrestore(
3723 instance->host->host_lock,
3724 flags);
3725 break;
3726 }
3727 }
3728
3729 megasas_return_cmd(instance, cmd);
3730
3731 /*
3732 * Set fast path IO to ZERO.
3733 * Validate Map will set proper value.
3734 * Meanwhile all IOs will go as LD IO.
3735 */
3736 if (status == MFI_STAT_OK &&
3737 (MR_ValidateMapInfo(instance, (instance->map_id + 1)))) {
3738 instance->map_id++;
3739 fusion->fast_path_io = 1;
3740 } else {
3741 fusion->fast_path_io = 0;
3742 }
3743
3744 if (instance->adapter_type >= INVADER_SERIES)
3745 megasas_set_ld_removed_by_fw(instance);
3746
3747 megasas_sync_map_info(instance);
3748 spin_unlock_irqrestore(instance->host->host_lock,
3749 flags);
3750
3751 break;
3752 }
3753 if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO ||
3754 opcode == MR_DCMD_CTRL_EVENT_GET) {
3755 spin_lock_irqsave(&poll_aen_lock, flags);
3756 megasas_poll_wait_aen = 0;
3757 spin_unlock_irqrestore(&poll_aen_lock, flags);
3758 }
3759
3760 /* FW has an updated PD sequence */
3761 if ((opcode == MR_DCMD_SYSTEM_PD_MAP_GET_INFO) &&
3762 (cmd->frame->dcmd.mbox.b[0] == 1)) {
3763
3764 spin_lock_irqsave(instance->host->host_lock, flags);
3765 status = cmd->frame->hdr.cmd_status;
3766 instance->jbod_seq_cmd = NULL;
3767 megasas_return_cmd(instance, cmd);
3768
3769 if (status == MFI_STAT_OK) {
3770 instance->pd_seq_map_id++;
3771 /* Re-register a pd sync seq num cmd */
3772 if (megasas_sync_pd_seq_num(instance, true))
3773 instance->use_seqnum_jbod_fp = false;
3774 } else
3775 instance->use_seqnum_jbod_fp = false;
3776
3777 spin_unlock_irqrestore(instance->host->host_lock, flags);
3778 break;
3779 }
3780
3781 /*
3782 * See if got an event notification
3783 */
3784 if (opcode == MR_DCMD_CTRL_EVENT_WAIT)
3785 megasas_service_aen(instance, cmd);
3786 else
3787 megasas_complete_int_cmd(instance, cmd);
3788
3789 break;
3790
3791 case MFI_CMD_ABORT:
3792 /*
3793 * Cmd issued to abort another cmd returned
3794 */
3795 megasas_complete_abort(instance, cmd);
3796 break;
3797
3798 default:
3799 dev_info(&instance->pdev->dev, "Unknown command completed! [0x%X]\n",
3800 hdr->cmd);
3801 megasas_complete_int_cmd(instance, cmd);
3802 break;
3803 }
3804 }
3805
3806 /**
3807 * megasas_issue_pending_cmds_again - issue all pending cmds
3808 * in FW again because of the fw reset
3809 * @instance: Adapter soft state
3810 */
3811 static inline void
megasas_issue_pending_cmds_again(struct megasas_instance * instance)3812 megasas_issue_pending_cmds_again(struct megasas_instance *instance)
3813 {
3814 struct megasas_cmd *cmd;
3815 struct list_head clist_local;
3816 union megasas_evt_class_locale class_locale;
3817 unsigned long flags;
3818 u32 seq_num;
3819
3820 INIT_LIST_HEAD(&clist_local);
3821 spin_lock_irqsave(&instance->hba_lock, flags);
3822 list_splice_init(&instance->internal_reset_pending_q, &clist_local);
3823 spin_unlock_irqrestore(&instance->hba_lock, flags);
3824
3825 while (!list_empty(&clist_local)) {
3826 cmd = list_entry((&clist_local)->next,
3827 struct megasas_cmd, list);
3828 list_del_init(&cmd->list);
3829
3830 if (cmd->sync_cmd || cmd->scmd) {
3831 dev_notice(&instance->pdev->dev, "command %p, %p:%d"
3832 "detected to be pending while HBA reset\n",
3833 cmd, cmd->scmd, cmd->sync_cmd);
3834
3835 cmd->retry_for_fw_reset++;
3836
3837 if (cmd->retry_for_fw_reset == 3) {
3838 dev_notice(&instance->pdev->dev, "cmd %p, %p:%d"
3839 "was tried multiple times during reset."
3840 "Shutting down the HBA\n",
3841 cmd, cmd->scmd, cmd->sync_cmd);
3842 instance->instancet->disable_intr(instance);
3843 atomic_set(&instance->fw_reset_no_pci_access, 1);
3844 megaraid_sas_kill_hba(instance);
3845 return;
3846 }
3847 }
3848
3849 if (cmd->sync_cmd == 1) {
3850 if (cmd->scmd) {
3851 dev_notice(&instance->pdev->dev, "unexpected"
3852 "cmd attached to internal command!\n");
3853 }
3854 dev_notice(&instance->pdev->dev, "%p synchronous cmd"
3855 "on the internal reset queue,"
3856 "issue it again.\n", cmd);
3857 cmd->cmd_status_drv = DCMD_INIT;
3858 instance->instancet->fire_cmd(instance,
3859 cmd->frame_phys_addr,
3860 0, instance->reg_set);
3861 } else if (cmd->scmd) {
3862 dev_notice(&instance->pdev->dev, "%p scsi cmd [%02x]"
3863 "detected on the internal queue, issue again.\n",
3864 cmd, cmd->scmd->cmnd[0]);
3865
3866 atomic_inc(&instance->fw_outstanding);
3867 instance->instancet->fire_cmd(instance,
3868 cmd->frame_phys_addr,
3869 cmd->frame_count-1, instance->reg_set);
3870 } else {
3871 dev_notice(&instance->pdev->dev, "%p unexpected cmd on the"
3872 "internal reset defer list while re-issue!!\n",
3873 cmd);
3874 }
3875 }
3876
3877 if (instance->aen_cmd) {
3878 dev_notice(&instance->pdev->dev, "aen_cmd in def process\n");
3879 megasas_return_cmd(instance, instance->aen_cmd);
3880
3881 instance->aen_cmd = NULL;
3882 }
3883
3884 /*
3885 * Initiate AEN (Asynchronous Event Notification)
3886 */
3887 seq_num = instance->last_seq_num;
3888 class_locale.members.reserved = 0;
3889 class_locale.members.locale = MR_EVT_LOCALE_ALL;
3890 class_locale.members.class = MR_EVT_CLASS_DEBUG;
3891
3892 megasas_register_aen(instance, seq_num, class_locale.word);
3893 }
3894
3895 /*
3896 * Move the internal reset pending commands to a deferred queue.
3897 *
3898 * We move the commands pending at internal reset time to a
3899 * pending queue. This queue would be flushed after successful
3900 * completion of the internal reset sequence. if the internal reset
3901 * did not complete in time, the kernel reset handler would flush
3902 * these commands.
3903 */
3904 static void
megasas_internal_reset_defer_cmds(struct megasas_instance * instance)3905 megasas_internal_reset_defer_cmds(struct megasas_instance *instance)
3906 {
3907 struct megasas_cmd *cmd;
3908 int i;
3909 u16 max_cmd = instance->max_fw_cmds;
3910 u32 defer_index;
3911 unsigned long flags;
3912
3913 defer_index = 0;
3914 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
3915 for (i = 0; i < max_cmd; i++) {
3916 cmd = instance->cmd_list[i];
3917 if (cmd->sync_cmd == 1 || cmd->scmd) {
3918 dev_notice(&instance->pdev->dev, "moving cmd[%d]:%p:%d:%p"
3919 "on the defer queue as internal\n",
3920 defer_index, cmd, cmd->sync_cmd, cmd->scmd);
3921
3922 if (!list_empty(&cmd->list)) {
3923 dev_notice(&instance->pdev->dev, "ERROR while"
3924 " moving this cmd:%p, %d %p, it was"
3925 "discovered on some list?\n",
3926 cmd, cmd->sync_cmd, cmd->scmd);
3927
3928 list_del_init(&cmd->list);
3929 }
3930 defer_index++;
3931 list_add_tail(&cmd->list,
3932 &instance->internal_reset_pending_q);
3933 }
3934 }
3935 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
3936 }
3937
3938
3939 static void
process_fw_state_change_wq(struct work_struct * work)3940 process_fw_state_change_wq(struct work_struct *work)
3941 {
3942 struct megasas_instance *instance =
3943 container_of(work, struct megasas_instance, work_init);
3944 u32 wait;
3945 unsigned long flags;
3946
3947 if (atomic_read(&instance->adprecovery) != MEGASAS_ADPRESET_SM_INFAULT) {
3948 dev_notice(&instance->pdev->dev, "error, recovery st %x\n",
3949 atomic_read(&instance->adprecovery));
3950 return ;
3951 }
3952
3953 if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
3954 dev_notice(&instance->pdev->dev, "FW detected to be in fault"
3955 "state, restarting it...\n");
3956
3957 instance->instancet->disable_intr(instance);
3958 atomic_set(&instance->fw_outstanding, 0);
3959
3960 atomic_set(&instance->fw_reset_no_pci_access, 1);
3961 instance->instancet->adp_reset(instance, instance->reg_set);
3962 atomic_set(&instance->fw_reset_no_pci_access, 0);
3963
3964 dev_notice(&instance->pdev->dev, "FW restarted successfully,"
3965 "initiating next stage...\n");
3966
3967 dev_notice(&instance->pdev->dev, "HBA recovery state machine,"
3968 "state 2 starting...\n");
3969
3970 /* waiting for about 20 second before start the second init */
3971 for (wait = 0; wait < 30; wait++) {
3972 msleep(1000);
3973 }
3974
3975 if (megasas_transition_to_ready(instance, 1)) {
3976 dev_notice(&instance->pdev->dev, "adapter not ready\n");
3977
3978 atomic_set(&instance->fw_reset_no_pci_access, 1);
3979 megaraid_sas_kill_hba(instance);
3980 return ;
3981 }
3982
3983 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
3984 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
3985 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)
3986 ) {
3987 *instance->consumer = *instance->producer;
3988 } else {
3989 *instance->consumer = 0;
3990 *instance->producer = 0;
3991 }
3992
3993 megasas_issue_init_mfi(instance);
3994
3995 spin_lock_irqsave(&instance->hba_lock, flags);
3996 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
3997 spin_unlock_irqrestore(&instance->hba_lock, flags);
3998 instance->instancet->enable_intr(instance);
3999
4000 megasas_issue_pending_cmds_again(instance);
4001 instance->issuepend_done = 1;
4002 }
4003 }
4004
4005 /**
4006 * megasas_deplete_reply_queue - Processes all completed commands
4007 * @instance: Adapter soft state
4008 * @alt_status: Alternate status to be returned to
4009 * SCSI mid-layer instead of the status
4010 * returned by the FW
4011 * Note: this must be called with hba lock held
4012 */
4013 static int
megasas_deplete_reply_queue(struct megasas_instance * instance,u8 alt_status)4014 megasas_deplete_reply_queue(struct megasas_instance *instance,
4015 u8 alt_status)
4016 {
4017 u32 mfiStatus;
4018 u32 fw_state;
4019
4020 if (instance->instancet->check_reset(instance, instance->reg_set) == 1)
4021 return IRQ_HANDLED;
4022
4023 mfiStatus = instance->instancet->clear_intr(instance);
4024 if (mfiStatus == 0) {
4025 /* Hardware may not set outbound_intr_status in MSI-X mode */
4026 if (!instance->msix_vectors)
4027 return IRQ_NONE;
4028 }
4029
4030 instance->mfiStatus = mfiStatus;
4031
4032 if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) {
4033 fw_state = instance->instancet->read_fw_status_reg(
4034 instance) & MFI_STATE_MASK;
4035
4036 if (fw_state != MFI_STATE_FAULT) {
4037 dev_notice(&instance->pdev->dev, "fw state:%x\n",
4038 fw_state);
4039 }
4040
4041 if ((fw_state == MFI_STATE_FAULT) &&
4042 (instance->disableOnlineCtrlReset == 0)) {
4043 dev_notice(&instance->pdev->dev, "wait adp restart\n");
4044
4045 if ((instance->pdev->device ==
4046 PCI_DEVICE_ID_LSI_SAS1064R) ||
4047 (instance->pdev->device ==
4048 PCI_DEVICE_ID_DELL_PERC5) ||
4049 (instance->pdev->device ==
4050 PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
4051
4052 *instance->consumer =
4053 cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
4054 }
4055
4056
4057 instance->instancet->disable_intr(instance);
4058 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
4059 instance->issuepend_done = 0;
4060
4061 atomic_set(&instance->fw_outstanding, 0);
4062 megasas_internal_reset_defer_cmds(instance);
4063
4064 dev_notice(&instance->pdev->dev, "fwState=%x, stage:%d\n",
4065 fw_state, atomic_read(&instance->adprecovery));
4066
4067 schedule_work(&instance->work_init);
4068 return IRQ_HANDLED;
4069
4070 } else {
4071 dev_notice(&instance->pdev->dev, "fwstate:%x, dis_OCR=%x\n",
4072 fw_state, instance->disableOnlineCtrlReset);
4073 }
4074 }
4075
4076 tasklet_schedule(&instance->isr_tasklet);
4077 return IRQ_HANDLED;
4078 }
4079
4080 /**
4081 * megasas_isr - isr entry point
4082 * @irq: IRQ number
4083 * @devp: IRQ context address
4084 */
megasas_isr(int irq,void * devp)4085 static irqreturn_t megasas_isr(int irq, void *devp)
4086 {
4087 struct megasas_irq_context *irq_context = devp;
4088 struct megasas_instance *instance = irq_context->instance;
4089 unsigned long flags;
4090 irqreturn_t rc;
4091
4092 if (atomic_read(&instance->fw_reset_no_pci_access))
4093 return IRQ_HANDLED;
4094
4095 spin_lock_irqsave(&instance->hba_lock, flags);
4096 rc = megasas_deplete_reply_queue(instance, DID_OK);
4097 spin_unlock_irqrestore(&instance->hba_lock, flags);
4098
4099 return rc;
4100 }
4101
4102 /**
4103 * megasas_transition_to_ready - Move the FW to READY state
4104 * @instance: Adapter soft state
4105 * @ocr: Adapter reset state
4106 *
4107 * During the initialization, FW passes can potentially be in any one of
4108 * several possible states. If the FW in operational, waiting-for-handshake
4109 * states, driver must take steps to bring it to ready state. Otherwise, it
4110 * has to wait for the ready state.
4111 */
4112 int
megasas_transition_to_ready(struct megasas_instance * instance,int ocr)4113 megasas_transition_to_ready(struct megasas_instance *instance, int ocr)
4114 {
4115 int i;
4116 u8 max_wait;
4117 u32 fw_state;
4118 u32 abs_state, curr_abs_state;
4119
4120 abs_state = instance->instancet->read_fw_status_reg(instance);
4121 fw_state = abs_state & MFI_STATE_MASK;
4122
4123 if (fw_state != MFI_STATE_READY)
4124 dev_info(&instance->pdev->dev, "Waiting for FW to come to ready"
4125 " state\n");
4126
4127 while (fw_state != MFI_STATE_READY) {
4128
4129 switch (fw_state) {
4130
4131 case MFI_STATE_FAULT:
4132 dev_printk(KERN_ERR, &instance->pdev->dev,
4133 "FW in FAULT state, Fault code:0x%x subcode:0x%x func:%s\n",
4134 abs_state & MFI_STATE_FAULT_CODE,
4135 abs_state & MFI_STATE_FAULT_SUBCODE, __func__);
4136 if (ocr) {
4137 max_wait = MEGASAS_RESET_WAIT_TIME;
4138 break;
4139 } else {
4140 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4141 megasas_dump_reg_set(instance->reg_set);
4142 return -ENODEV;
4143 }
4144
4145 case MFI_STATE_WAIT_HANDSHAKE:
4146 /*
4147 * Set the CLR bit in inbound doorbell
4148 */
4149 if ((instance->pdev->device ==
4150 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4151 (instance->pdev->device ==
4152 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
4153 (instance->adapter_type != MFI_SERIES))
4154 writel(
4155 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
4156 &instance->reg_set->doorbell);
4157 else
4158 writel(
4159 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
4160 &instance->reg_set->inbound_doorbell);
4161
4162 max_wait = MEGASAS_RESET_WAIT_TIME;
4163 break;
4164
4165 case MFI_STATE_BOOT_MESSAGE_PENDING:
4166 if ((instance->pdev->device ==
4167 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4168 (instance->pdev->device ==
4169 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
4170 (instance->adapter_type != MFI_SERIES))
4171 writel(MFI_INIT_HOTPLUG,
4172 &instance->reg_set->doorbell);
4173 else
4174 writel(MFI_INIT_HOTPLUG,
4175 &instance->reg_set->inbound_doorbell);
4176
4177 max_wait = MEGASAS_RESET_WAIT_TIME;
4178 break;
4179
4180 case MFI_STATE_OPERATIONAL:
4181 /*
4182 * Bring it to READY state; assuming max wait 10 secs
4183 */
4184 instance->instancet->disable_intr(instance);
4185 if ((instance->pdev->device ==
4186 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4187 (instance->pdev->device ==
4188 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
4189 (instance->adapter_type != MFI_SERIES)) {
4190 writel(MFI_RESET_FLAGS,
4191 &instance->reg_set->doorbell);
4192
4193 if (instance->adapter_type != MFI_SERIES) {
4194 for (i = 0; i < (10 * 1000); i += 20) {
4195 if (megasas_readl(
4196 instance,
4197 &instance->
4198 reg_set->
4199 doorbell) & 1)
4200 msleep(20);
4201 else
4202 break;
4203 }
4204 }
4205 } else
4206 writel(MFI_RESET_FLAGS,
4207 &instance->reg_set->inbound_doorbell);
4208
4209 max_wait = MEGASAS_RESET_WAIT_TIME;
4210 break;
4211
4212 case MFI_STATE_UNDEFINED:
4213 /*
4214 * This state should not last for more than 2 seconds
4215 */
4216 max_wait = MEGASAS_RESET_WAIT_TIME;
4217 break;
4218
4219 case MFI_STATE_BB_INIT:
4220 max_wait = MEGASAS_RESET_WAIT_TIME;
4221 break;
4222
4223 case MFI_STATE_FW_INIT:
4224 max_wait = MEGASAS_RESET_WAIT_TIME;
4225 break;
4226
4227 case MFI_STATE_FW_INIT_2:
4228 max_wait = MEGASAS_RESET_WAIT_TIME;
4229 break;
4230
4231 case MFI_STATE_DEVICE_SCAN:
4232 max_wait = MEGASAS_RESET_WAIT_TIME;
4233 break;
4234
4235 case MFI_STATE_FLUSH_CACHE:
4236 max_wait = MEGASAS_RESET_WAIT_TIME;
4237 break;
4238
4239 default:
4240 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Unknown state 0x%x\n",
4241 fw_state);
4242 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4243 megasas_dump_reg_set(instance->reg_set);
4244 return -ENODEV;
4245 }
4246
4247 /*
4248 * The cur_state should not last for more than max_wait secs
4249 */
4250 for (i = 0; i < max_wait * 50; i++) {
4251 curr_abs_state = instance->instancet->
4252 read_fw_status_reg(instance);
4253
4254 if (abs_state == curr_abs_state) {
4255 msleep(20);
4256 } else
4257 break;
4258 }
4259
4260 /*
4261 * Return error if fw_state hasn't changed after max_wait
4262 */
4263 if (curr_abs_state == abs_state) {
4264 dev_printk(KERN_DEBUG, &instance->pdev->dev, "FW state [%d] hasn't changed "
4265 "in %d secs\n", fw_state, max_wait);
4266 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4267 megasas_dump_reg_set(instance->reg_set);
4268 return -ENODEV;
4269 }
4270
4271 abs_state = curr_abs_state;
4272 fw_state = curr_abs_state & MFI_STATE_MASK;
4273 }
4274 dev_info(&instance->pdev->dev, "FW now in Ready state\n");
4275
4276 return 0;
4277 }
4278
4279 /**
4280 * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool
4281 * @instance: Adapter soft state
4282 */
megasas_teardown_frame_pool(struct megasas_instance * instance)4283 static void megasas_teardown_frame_pool(struct megasas_instance *instance)
4284 {
4285 int i;
4286 u16 max_cmd = instance->max_mfi_cmds;
4287 struct megasas_cmd *cmd;
4288
4289 if (!instance->frame_dma_pool)
4290 return;
4291
4292 /*
4293 * Return all frames to pool
4294 */
4295 for (i = 0; i < max_cmd; i++) {
4296
4297 cmd = instance->cmd_list[i];
4298
4299 if (cmd->frame)
4300 dma_pool_free(instance->frame_dma_pool, cmd->frame,
4301 cmd->frame_phys_addr);
4302
4303 if (cmd->sense)
4304 dma_pool_free(instance->sense_dma_pool, cmd->sense,
4305 cmd->sense_phys_addr);
4306 }
4307
4308 /*
4309 * Now destroy the pool itself
4310 */
4311 dma_pool_destroy(instance->frame_dma_pool);
4312 dma_pool_destroy(instance->sense_dma_pool);
4313
4314 instance->frame_dma_pool = NULL;
4315 instance->sense_dma_pool = NULL;
4316 }
4317
4318 /**
4319 * megasas_create_frame_pool - Creates DMA pool for cmd frames
4320 * @instance: Adapter soft state
4321 *
4322 * Each command packet has an embedded DMA memory buffer that is used for
4323 * filling MFI frame and the SG list that immediately follows the frame. This
4324 * function creates those DMA memory buffers for each command packet by using
4325 * PCI pool facility.
4326 */
megasas_create_frame_pool(struct megasas_instance * instance)4327 static int megasas_create_frame_pool(struct megasas_instance *instance)
4328 {
4329 int i;
4330 u16 max_cmd;
4331 u32 frame_count;
4332 struct megasas_cmd *cmd;
4333
4334 max_cmd = instance->max_mfi_cmds;
4335
4336 /*
4337 * For MFI controllers.
4338 * max_num_sge = 60
4339 * max_sge_sz = 16 byte (sizeof megasas_sge_skinny)
4340 * Total 960 byte (15 MFI frame of 64 byte)
4341 *
4342 * Fusion adapter require only 3 extra frame.
4343 * max_num_sge = 16 (defined as MAX_IOCTL_SGE)
4344 * max_sge_sz = 12 byte (sizeof megasas_sge64)
4345 * Total 192 byte (3 MFI frame of 64 byte)
4346 */
4347 frame_count = (instance->adapter_type == MFI_SERIES) ?
4348 (15 + 1) : (3 + 1);
4349 instance->mfi_frame_size = MEGAMFI_FRAME_SIZE * frame_count;
4350 /*
4351 * Use DMA pool facility provided by PCI layer
4352 */
4353 instance->frame_dma_pool = dma_pool_create("megasas frame pool",
4354 &instance->pdev->dev,
4355 instance->mfi_frame_size, 256, 0);
4356
4357 if (!instance->frame_dma_pool) {
4358 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup frame pool\n");
4359 return -ENOMEM;
4360 }
4361
4362 instance->sense_dma_pool = dma_pool_create("megasas sense pool",
4363 &instance->pdev->dev, 128,
4364 4, 0);
4365
4366 if (!instance->sense_dma_pool) {
4367 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup sense pool\n");
4368
4369 dma_pool_destroy(instance->frame_dma_pool);
4370 instance->frame_dma_pool = NULL;
4371
4372 return -ENOMEM;
4373 }
4374
4375 /*
4376 * Allocate and attach a frame to each of the commands in cmd_list.
4377 * By making cmd->index as the context instead of the &cmd, we can
4378 * always use 32bit context regardless of the architecture
4379 */
4380 for (i = 0; i < max_cmd; i++) {
4381
4382 cmd = instance->cmd_list[i];
4383
4384 cmd->frame = dma_pool_zalloc(instance->frame_dma_pool,
4385 GFP_KERNEL, &cmd->frame_phys_addr);
4386
4387 cmd->sense = dma_pool_alloc(instance->sense_dma_pool,
4388 GFP_KERNEL, &cmd->sense_phys_addr);
4389
4390 /*
4391 * megasas_teardown_frame_pool() takes care of freeing
4392 * whatever has been allocated
4393 */
4394 if (!cmd->frame || !cmd->sense) {
4395 dev_printk(KERN_DEBUG, &instance->pdev->dev, "dma_pool_alloc failed\n");
4396 megasas_teardown_frame_pool(instance);
4397 return -ENOMEM;
4398 }
4399
4400 cmd->frame->io.context = cpu_to_le32(cmd->index);
4401 cmd->frame->io.pad_0 = 0;
4402 if ((instance->adapter_type == MFI_SERIES) && reset_devices)
4403 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
4404 }
4405
4406 return 0;
4407 }
4408
4409 /**
4410 * megasas_free_cmds - Free all the cmds in the free cmd pool
4411 * @instance: Adapter soft state
4412 */
megasas_free_cmds(struct megasas_instance * instance)4413 void megasas_free_cmds(struct megasas_instance *instance)
4414 {
4415 int i;
4416
4417 /* First free the MFI frame pool */
4418 megasas_teardown_frame_pool(instance);
4419
4420 /* Free all the commands in the cmd_list */
4421 for (i = 0; i < instance->max_mfi_cmds; i++)
4422
4423 kfree(instance->cmd_list[i]);
4424
4425 /* Free the cmd_list buffer itself */
4426 kfree(instance->cmd_list);
4427 instance->cmd_list = NULL;
4428
4429 INIT_LIST_HEAD(&instance->cmd_pool);
4430 }
4431
4432 /**
4433 * megasas_alloc_cmds - Allocates the command packets
4434 * @instance: Adapter soft state
4435 *
4436 * Each command that is issued to the FW, whether IO commands from the OS or
4437 * internal commands like IOCTLs, are wrapped in local data structure called
4438 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to
4439 * the FW.
4440 *
4441 * Each frame has a 32-bit field called context (tag). This context is used
4442 * to get back the megasas_cmd from the frame when a frame gets completed in
4443 * the ISR. Typically the address of the megasas_cmd itself would be used as
4444 * the context. But we wanted to keep the differences between 32 and 64 bit
4445 * systems to the mininum. We always use 32 bit integers for the context. In
4446 * this driver, the 32 bit values are the indices into an array cmd_list.
4447 * This array is used only to look up the megasas_cmd given the context. The
4448 * free commands themselves are maintained in a linked list called cmd_pool.
4449 */
megasas_alloc_cmds(struct megasas_instance * instance)4450 int megasas_alloc_cmds(struct megasas_instance *instance)
4451 {
4452 int i;
4453 int j;
4454 u16 max_cmd;
4455 struct megasas_cmd *cmd;
4456
4457 max_cmd = instance->max_mfi_cmds;
4458
4459 /*
4460 * instance->cmd_list is an array of struct megasas_cmd pointers.
4461 * Allocate the dynamic array first and then allocate individual
4462 * commands.
4463 */
4464 instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL);
4465
4466 if (!instance->cmd_list) {
4467 dev_printk(KERN_DEBUG, &instance->pdev->dev, "out of memory\n");
4468 return -ENOMEM;
4469 }
4470
4471 for (i = 0; i < max_cmd; i++) {
4472 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd),
4473 GFP_KERNEL);
4474
4475 if (!instance->cmd_list[i]) {
4476
4477 for (j = 0; j < i; j++)
4478 kfree(instance->cmd_list[j]);
4479
4480 kfree(instance->cmd_list);
4481 instance->cmd_list = NULL;
4482
4483 return -ENOMEM;
4484 }
4485 }
4486
4487 for (i = 0; i < max_cmd; i++) {
4488 cmd = instance->cmd_list[i];
4489 memset(cmd, 0, sizeof(struct megasas_cmd));
4490 cmd->index = i;
4491 cmd->scmd = NULL;
4492 cmd->instance = instance;
4493
4494 list_add_tail(&cmd->list, &instance->cmd_pool);
4495 }
4496
4497 /*
4498 * Create a frame pool and assign one frame to each cmd
4499 */
4500 if (megasas_create_frame_pool(instance)) {
4501 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error creating frame DMA pool\n");
4502 megasas_free_cmds(instance);
4503 return -ENOMEM;
4504 }
4505
4506 return 0;
4507 }
4508
4509 /*
4510 * dcmd_timeout_ocr_possible - Check if OCR is possible based on Driver/FW state.
4511 * @instance: Adapter soft state
4512 *
4513 * Return 0 for only Fusion adapter, if driver load/unload is not in progress
4514 * or FW is not under OCR.
4515 */
4516 inline int
dcmd_timeout_ocr_possible(struct megasas_instance * instance)4517 dcmd_timeout_ocr_possible(struct megasas_instance *instance) {
4518
4519 if (instance->adapter_type == MFI_SERIES)
4520 return KILL_ADAPTER;
4521 else if (instance->unload ||
4522 test_bit(MEGASAS_FUSION_OCR_NOT_POSSIBLE,
4523 &instance->reset_flags))
4524 return IGNORE_TIMEOUT;
4525 else
4526 return INITIATE_OCR;
4527 }
4528
4529 static void
megasas_get_pd_info(struct megasas_instance * instance,struct scsi_device * sdev)4530 megasas_get_pd_info(struct megasas_instance *instance, struct scsi_device *sdev)
4531 {
4532 int ret;
4533 struct megasas_cmd *cmd;
4534 struct megasas_dcmd_frame *dcmd;
4535
4536 struct MR_PRIV_DEVICE *mr_device_priv_data;
4537 u16 device_id = 0;
4538
4539 device_id = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + sdev->id;
4540 cmd = megasas_get_cmd(instance);
4541
4542 if (!cmd) {
4543 dev_err(&instance->pdev->dev, "Failed to get cmd %s\n", __func__);
4544 return;
4545 }
4546
4547 dcmd = &cmd->frame->dcmd;
4548
4549 memset(instance->pd_info, 0, sizeof(*instance->pd_info));
4550 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4551
4552 dcmd->mbox.s[0] = cpu_to_le16(device_id);
4553 dcmd->cmd = MFI_CMD_DCMD;
4554 dcmd->cmd_status = 0xFF;
4555 dcmd->sge_count = 1;
4556 dcmd->flags = MFI_FRAME_DIR_READ;
4557 dcmd->timeout = 0;
4558 dcmd->pad_0 = 0;
4559 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_PD_INFO));
4560 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_GET_INFO);
4561
4562 megasas_set_dma_settings(instance, dcmd, instance->pd_info_h,
4563 sizeof(struct MR_PD_INFO));
4564
4565 if ((instance->adapter_type != MFI_SERIES) &&
4566 !instance->mask_interrupts)
4567 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4568 else
4569 ret = megasas_issue_polled(instance, cmd);
4570
4571 switch (ret) {
4572 case DCMD_SUCCESS:
4573 mr_device_priv_data = sdev->hostdata;
4574 le16_to_cpus((u16 *)&instance->pd_info->state.ddf.pdType);
4575 mr_device_priv_data->interface_type =
4576 instance->pd_info->state.ddf.pdType.intf;
4577 break;
4578
4579 case DCMD_TIMEOUT:
4580
4581 switch (dcmd_timeout_ocr_possible(instance)) {
4582 case INITIATE_OCR:
4583 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4584 mutex_unlock(&instance->reset_mutex);
4585 megasas_reset_fusion(instance->host,
4586 MFI_IO_TIMEOUT_OCR);
4587 mutex_lock(&instance->reset_mutex);
4588 break;
4589 case KILL_ADAPTER:
4590 megaraid_sas_kill_hba(instance);
4591 break;
4592 case IGNORE_TIMEOUT:
4593 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4594 __func__, __LINE__);
4595 break;
4596 }
4597
4598 break;
4599 }
4600
4601 if (ret != DCMD_TIMEOUT)
4602 megasas_return_cmd(instance, cmd);
4603
4604 return;
4605 }
4606 /*
4607 * megasas_get_pd_list_info - Returns FW's pd_list structure
4608 * @instance: Adapter soft state
4609 * @pd_list: pd_list structure
4610 *
4611 * Issues an internal command (DCMD) to get the FW's controller PD
4612 * list structure. This information is mainly used to find out SYSTEM
4613 * supported by the FW.
4614 */
4615 static int
megasas_get_pd_list(struct megasas_instance * instance)4616 megasas_get_pd_list(struct megasas_instance *instance)
4617 {
4618 int ret = 0, pd_index = 0;
4619 struct megasas_cmd *cmd;
4620 struct megasas_dcmd_frame *dcmd;
4621 struct MR_PD_LIST *ci;
4622 struct MR_PD_ADDRESS *pd_addr;
4623
4624 if (instance->pd_list_not_supported) {
4625 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
4626 "not supported by firmware\n");
4627 return ret;
4628 }
4629
4630 ci = instance->pd_list_buf;
4631
4632 cmd = megasas_get_cmd(instance);
4633
4634 if (!cmd) {
4635 dev_printk(KERN_DEBUG, &instance->pdev->dev, "(get_pd_list): Failed to get cmd\n");
4636 return -ENOMEM;
4637 }
4638
4639 dcmd = &cmd->frame->dcmd;
4640
4641 memset(ci, 0, sizeof(*ci));
4642 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4643
4644 dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST;
4645 dcmd->mbox.b[1] = 0;
4646 dcmd->cmd = MFI_CMD_DCMD;
4647 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4648 dcmd->sge_count = 1;
4649 dcmd->flags = MFI_FRAME_DIR_READ;
4650 dcmd->timeout = 0;
4651 dcmd->pad_0 = 0;
4652 dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
4653 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY);
4654
4655 megasas_set_dma_settings(instance, dcmd, instance->pd_list_buf_h,
4656 (MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST)));
4657
4658 if ((instance->adapter_type != MFI_SERIES) &&
4659 !instance->mask_interrupts)
4660 ret = megasas_issue_blocked_cmd(instance, cmd,
4661 MFI_IO_TIMEOUT_SECS);
4662 else
4663 ret = megasas_issue_polled(instance, cmd);
4664
4665 switch (ret) {
4666 case DCMD_FAILED:
4667 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
4668 "failed/not supported by firmware\n");
4669
4670 if (instance->adapter_type != MFI_SERIES)
4671 megaraid_sas_kill_hba(instance);
4672 else
4673 instance->pd_list_not_supported = 1;
4674 break;
4675 case DCMD_TIMEOUT:
4676
4677 switch (dcmd_timeout_ocr_possible(instance)) {
4678 case INITIATE_OCR:
4679 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4680 /*
4681 * DCMD failed from AEN path.
4682 * AEN path already hold reset_mutex to avoid PCI access
4683 * while OCR is in progress.
4684 */
4685 mutex_unlock(&instance->reset_mutex);
4686 megasas_reset_fusion(instance->host,
4687 MFI_IO_TIMEOUT_OCR);
4688 mutex_lock(&instance->reset_mutex);
4689 break;
4690 case KILL_ADAPTER:
4691 megaraid_sas_kill_hba(instance);
4692 break;
4693 case IGNORE_TIMEOUT:
4694 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d \n",
4695 __func__, __LINE__);
4696 break;
4697 }
4698
4699 break;
4700
4701 case DCMD_SUCCESS:
4702 pd_addr = ci->addr;
4703 if (megasas_dbg_lvl & LD_PD_DEBUG)
4704 dev_info(&instance->pdev->dev, "%s, sysPD count: 0x%x\n",
4705 __func__, le32_to_cpu(ci->count));
4706
4707 if ((le32_to_cpu(ci->count) >
4708 (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL)))
4709 break;
4710
4711 memset(instance->local_pd_list, 0,
4712 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
4713
4714 for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) {
4715 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].tid =
4716 le16_to_cpu(pd_addr->deviceId);
4717 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveType =
4718 pd_addr->scsiDevType;
4719 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveState =
4720 MR_PD_STATE_SYSTEM;
4721 if (megasas_dbg_lvl & LD_PD_DEBUG)
4722 dev_info(&instance->pdev->dev,
4723 "PD%d: targetID: 0x%03x deviceType:0x%x\n",
4724 pd_index, le16_to_cpu(pd_addr->deviceId),
4725 pd_addr->scsiDevType);
4726 pd_addr++;
4727 }
4728
4729 memcpy(instance->pd_list, instance->local_pd_list,
4730 sizeof(instance->pd_list));
4731 break;
4732
4733 }
4734
4735 if (ret != DCMD_TIMEOUT)
4736 megasas_return_cmd(instance, cmd);
4737
4738 return ret;
4739 }
4740
4741 /*
4742 * megasas_get_ld_list_info - Returns FW's ld_list structure
4743 * @instance: Adapter soft state
4744 * @ld_list: ld_list structure
4745 *
4746 * Issues an internal command (DCMD) to get the FW's controller PD
4747 * list structure. This information is mainly used to find out SYSTEM
4748 * supported by the FW.
4749 */
4750 static int
megasas_get_ld_list(struct megasas_instance * instance)4751 megasas_get_ld_list(struct megasas_instance *instance)
4752 {
4753 int ret = 0, ld_index = 0, ids = 0;
4754 struct megasas_cmd *cmd;
4755 struct megasas_dcmd_frame *dcmd;
4756 struct MR_LD_LIST *ci;
4757 dma_addr_t ci_h = 0;
4758 u32 ld_count;
4759
4760 ci = instance->ld_list_buf;
4761 ci_h = instance->ld_list_buf_h;
4762
4763 cmd = megasas_get_cmd(instance);
4764
4765 if (!cmd) {
4766 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_list: Failed to get cmd\n");
4767 return -ENOMEM;
4768 }
4769
4770 dcmd = &cmd->frame->dcmd;
4771
4772 memset(ci, 0, sizeof(*ci));
4773 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4774
4775 if (instance->supportmax256vd)
4776 dcmd->mbox.b[0] = 1;
4777 dcmd->cmd = MFI_CMD_DCMD;
4778 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4779 dcmd->sge_count = 1;
4780 dcmd->flags = MFI_FRAME_DIR_READ;
4781 dcmd->timeout = 0;
4782 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST));
4783 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST);
4784 dcmd->pad_0 = 0;
4785
4786 megasas_set_dma_settings(instance, dcmd, ci_h,
4787 sizeof(struct MR_LD_LIST));
4788
4789 if ((instance->adapter_type != MFI_SERIES) &&
4790 !instance->mask_interrupts)
4791 ret = megasas_issue_blocked_cmd(instance, cmd,
4792 MFI_IO_TIMEOUT_SECS);
4793 else
4794 ret = megasas_issue_polled(instance, cmd);
4795
4796 ld_count = le32_to_cpu(ci->ldCount);
4797
4798 switch (ret) {
4799 case DCMD_FAILED:
4800 megaraid_sas_kill_hba(instance);
4801 break;
4802 case DCMD_TIMEOUT:
4803
4804 switch (dcmd_timeout_ocr_possible(instance)) {
4805 case INITIATE_OCR:
4806 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4807 /*
4808 * DCMD failed from AEN path.
4809 * AEN path already hold reset_mutex to avoid PCI access
4810 * while OCR is in progress.
4811 */
4812 mutex_unlock(&instance->reset_mutex);
4813 megasas_reset_fusion(instance->host,
4814 MFI_IO_TIMEOUT_OCR);
4815 mutex_lock(&instance->reset_mutex);
4816 break;
4817 case KILL_ADAPTER:
4818 megaraid_sas_kill_hba(instance);
4819 break;
4820 case IGNORE_TIMEOUT:
4821 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4822 __func__, __LINE__);
4823 break;
4824 }
4825
4826 break;
4827
4828 case DCMD_SUCCESS:
4829 if (megasas_dbg_lvl & LD_PD_DEBUG)
4830 dev_info(&instance->pdev->dev, "%s, LD count: 0x%x\n",
4831 __func__, ld_count);
4832
4833 if (ld_count > instance->fw_supported_vd_count)
4834 break;
4835
4836 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
4837
4838 for (ld_index = 0; ld_index < ld_count; ld_index++) {
4839 if (ci->ldList[ld_index].state != 0) {
4840 ids = ci->ldList[ld_index].ref.targetId;
4841 instance->ld_ids[ids] = ci->ldList[ld_index].ref.targetId;
4842 if (megasas_dbg_lvl & LD_PD_DEBUG)
4843 dev_info(&instance->pdev->dev,
4844 "LD%d: targetID: 0x%03x\n",
4845 ld_index, ids);
4846 }
4847 }
4848
4849 break;
4850 }
4851
4852 if (ret != DCMD_TIMEOUT)
4853 megasas_return_cmd(instance, cmd);
4854
4855 return ret;
4856 }
4857
4858 /**
4859 * megasas_ld_list_query - Returns FW's ld_list structure
4860 * @instance: Adapter soft state
4861 * @query_type: ld_list structure type
4862 *
4863 * Issues an internal command (DCMD) to get the FW's controller PD
4864 * list structure. This information is mainly used to find out SYSTEM
4865 * supported by the FW.
4866 */
4867 static int
megasas_ld_list_query(struct megasas_instance * instance,u8 query_type)4868 megasas_ld_list_query(struct megasas_instance *instance, u8 query_type)
4869 {
4870 int ret = 0, ld_index = 0, ids = 0;
4871 struct megasas_cmd *cmd;
4872 struct megasas_dcmd_frame *dcmd;
4873 struct MR_LD_TARGETID_LIST *ci;
4874 dma_addr_t ci_h = 0;
4875 u32 tgtid_count;
4876
4877 ci = instance->ld_targetid_list_buf;
4878 ci_h = instance->ld_targetid_list_buf_h;
4879
4880 cmd = megasas_get_cmd(instance);
4881
4882 if (!cmd) {
4883 dev_warn(&instance->pdev->dev,
4884 "megasas_ld_list_query: Failed to get cmd\n");
4885 return -ENOMEM;
4886 }
4887
4888 dcmd = &cmd->frame->dcmd;
4889
4890 memset(ci, 0, sizeof(*ci));
4891 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4892
4893 dcmd->mbox.b[0] = query_type;
4894 if (instance->supportmax256vd)
4895 dcmd->mbox.b[2] = 1;
4896
4897 dcmd->cmd = MFI_CMD_DCMD;
4898 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4899 dcmd->sge_count = 1;
4900 dcmd->flags = MFI_FRAME_DIR_READ;
4901 dcmd->timeout = 0;
4902 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
4903 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY);
4904 dcmd->pad_0 = 0;
4905
4906 megasas_set_dma_settings(instance, dcmd, ci_h,
4907 sizeof(struct MR_LD_TARGETID_LIST));
4908
4909 if ((instance->adapter_type != MFI_SERIES) &&
4910 !instance->mask_interrupts)
4911 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4912 else
4913 ret = megasas_issue_polled(instance, cmd);
4914
4915 switch (ret) {
4916 case DCMD_FAILED:
4917 dev_info(&instance->pdev->dev,
4918 "DCMD not supported by firmware - %s %d\n",
4919 __func__, __LINE__);
4920 ret = megasas_get_ld_list(instance);
4921 break;
4922 case DCMD_TIMEOUT:
4923 switch (dcmd_timeout_ocr_possible(instance)) {
4924 case INITIATE_OCR:
4925 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4926 /*
4927 * DCMD failed from AEN path.
4928 * AEN path already hold reset_mutex to avoid PCI access
4929 * while OCR is in progress.
4930 */
4931 mutex_unlock(&instance->reset_mutex);
4932 megasas_reset_fusion(instance->host,
4933 MFI_IO_TIMEOUT_OCR);
4934 mutex_lock(&instance->reset_mutex);
4935 break;
4936 case KILL_ADAPTER:
4937 megaraid_sas_kill_hba(instance);
4938 break;
4939 case IGNORE_TIMEOUT:
4940 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4941 __func__, __LINE__);
4942 break;
4943 }
4944
4945 break;
4946 case DCMD_SUCCESS:
4947 tgtid_count = le32_to_cpu(ci->count);
4948
4949 if (megasas_dbg_lvl & LD_PD_DEBUG)
4950 dev_info(&instance->pdev->dev, "%s, LD count: 0x%x\n",
4951 __func__, tgtid_count);
4952
4953 if ((tgtid_count > (instance->fw_supported_vd_count)))
4954 break;
4955
4956 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
4957 for (ld_index = 0; ld_index < tgtid_count; ld_index++) {
4958 ids = ci->targetId[ld_index];
4959 instance->ld_ids[ids] = ci->targetId[ld_index];
4960 if (megasas_dbg_lvl & LD_PD_DEBUG)
4961 dev_info(&instance->pdev->dev, "LD%d: targetID: 0x%03x\n",
4962 ld_index, ci->targetId[ld_index]);
4963 }
4964
4965 break;
4966 }
4967
4968 if (ret != DCMD_TIMEOUT)
4969 megasas_return_cmd(instance, cmd);
4970
4971 return ret;
4972 }
4973
4974 /**
4975 * megasas_host_device_list_query
4976 * dcmd.opcode - MR_DCMD_CTRL_DEVICE_LIST_GET
4977 * dcmd.mbox - reserved
4978 * dcmd.sge IN - ptr to return MR_HOST_DEVICE_LIST structure
4979 * Desc: This DCMD will return the combined device list
4980 * Status: MFI_STAT_OK - List returned successfully
4981 * MFI_STAT_INVALID_CMD - Firmware support for the feature has been
4982 * disabled
4983 * @instance: Adapter soft state
4984 * @is_probe: Driver probe check
4985 * Return: 0 if DCMD succeeded
4986 * non-zero if failed
4987 */
4988 static int
megasas_host_device_list_query(struct megasas_instance * instance,bool is_probe)4989 megasas_host_device_list_query(struct megasas_instance *instance,
4990 bool is_probe)
4991 {
4992 int ret, i, target_id;
4993 struct megasas_cmd *cmd;
4994 struct megasas_dcmd_frame *dcmd;
4995 struct MR_HOST_DEVICE_LIST *ci;
4996 u32 count;
4997 dma_addr_t ci_h;
4998
4999 ci = instance->host_device_list_buf;
5000 ci_h = instance->host_device_list_buf_h;
5001
5002 cmd = megasas_get_cmd(instance);
5003
5004 if (!cmd) {
5005 dev_warn(&instance->pdev->dev,
5006 "%s: failed to get cmd\n",
5007 __func__);
5008 return -ENOMEM;
5009 }
5010
5011 dcmd = &cmd->frame->dcmd;
5012
5013 memset(ci, 0, sizeof(*ci));
5014 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5015
5016 dcmd->mbox.b[0] = is_probe ? 0 : 1;
5017 dcmd->cmd = MFI_CMD_DCMD;
5018 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5019 dcmd->sge_count = 1;
5020 dcmd->flags = MFI_FRAME_DIR_READ;
5021 dcmd->timeout = 0;
5022 dcmd->pad_0 = 0;
5023 dcmd->data_xfer_len = cpu_to_le32(HOST_DEVICE_LIST_SZ);
5024 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_DEVICE_LIST_GET);
5025
5026 megasas_set_dma_settings(instance, dcmd, ci_h, HOST_DEVICE_LIST_SZ);
5027
5028 if (!instance->mask_interrupts) {
5029 ret = megasas_issue_blocked_cmd(instance, cmd,
5030 MFI_IO_TIMEOUT_SECS);
5031 } else {
5032 ret = megasas_issue_polled(instance, cmd);
5033 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5034 }
5035
5036 switch (ret) {
5037 case DCMD_SUCCESS:
5038 /* Fill the internal pd_list and ld_ids array based on
5039 * targetIds returned by FW
5040 */
5041 count = le32_to_cpu(ci->count);
5042
5043 if (count > (MEGASAS_MAX_PD + MAX_LOGICAL_DRIVES_EXT))
5044 break;
5045
5046 if (megasas_dbg_lvl & LD_PD_DEBUG)
5047 dev_info(&instance->pdev->dev, "%s, Device count: 0x%x\n",
5048 __func__, count);
5049
5050 memset(instance->local_pd_list, 0,
5051 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
5052 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
5053 for (i = 0; i < count; i++) {
5054 target_id = le16_to_cpu(ci->host_device_list[i].target_id);
5055 if (ci->host_device_list[i].flags.u.bits.is_sys_pd) {
5056 instance->local_pd_list[target_id].tid = target_id;
5057 instance->local_pd_list[target_id].driveType =
5058 ci->host_device_list[i].scsi_type;
5059 instance->local_pd_list[target_id].driveState =
5060 MR_PD_STATE_SYSTEM;
5061 if (megasas_dbg_lvl & LD_PD_DEBUG)
5062 dev_info(&instance->pdev->dev,
5063 "Device %d: PD targetID: 0x%03x deviceType:0x%x\n",
5064 i, target_id, ci->host_device_list[i].scsi_type);
5065 } else {
5066 instance->ld_ids[target_id] = target_id;
5067 if (megasas_dbg_lvl & LD_PD_DEBUG)
5068 dev_info(&instance->pdev->dev,
5069 "Device %d: LD targetID: 0x%03x\n",
5070 i, target_id);
5071 }
5072 }
5073
5074 memcpy(instance->pd_list, instance->local_pd_list,
5075 sizeof(instance->pd_list));
5076 break;
5077
5078 case DCMD_TIMEOUT:
5079 switch (dcmd_timeout_ocr_possible(instance)) {
5080 case INITIATE_OCR:
5081 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5082 mutex_unlock(&instance->reset_mutex);
5083 megasas_reset_fusion(instance->host,
5084 MFI_IO_TIMEOUT_OCR);
5085 mutex_lock(&instance->reset_mutex);
5086 break;
5087 case KILL_ADAPTER:
5088 megaraid_sas_kill_hba(instance);
5089 break;
5090 case IGNORE_TIMEOUT:
5091 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5092 __func__, __LINE__);
5093 break;
5094 }
5095 break;
5096 case DCMD_FAILED:
5097 dev_err(&instance->pdev->dev,
5098 "%s: MR_DCMD_CTRL_DEVICE_LIST_GET failed\n",
5099 __func__);
5100 break;
5101 }
5102
5103 if (ret != DCMD_TIMEOUT)
5104 megasas_return_cmd(instance, cmd);
5105
5106 return ret;
5107 }
5108
5109 /*
5110 * megasas_update_ext_vd_details : Update details w.r.t Extended VD
5111 * instance : Controller's instance
5112 */
megasas_update_ext_vd_details(struct megasas_instance * instance)5113 static void megasas_update_ext_vd_details(struct megasas_instance *instance)
5114 {
5115 struct fusion_context *fusion;
5116 u32 ventura_map_sz = 0;
5117
5118 fusion = instance->ctrl_context;
5119 /* For MFI based controllers return dummy success */
5120 if (!fusion)
5121 return;
5122
5123 instance->supportmax256vd =
5124 instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs;
5125 /* Below is additional check to address future FW enhancement */
5126 if (instance->ctrl_info_buf->max_lds > 64)
5127 instance->supportmax256vd = 1;
5128
5129 instance->drv_supported_vd_count = MEGASAS_MAX_LD_CHANNELS
5130 * MEGASAS_MAX_DEV_PER_CHANNEL;
5131 instance->drv_supported_pd_count = MEGASAS_MAX_PD_CHANNELS
5132 * MEGASAS_MAX_DEV_PER_CHANNEL;
5133 if (instance->supportmax256vd) {
5134 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES_EXT;
5135 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
5136 } else {
5137 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
5138 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
5139 }
5140
5141 dev_info(&instance->pdev->dev,
5142 "FW provided supportMaxExtLDs: %d\tmax_lds: %d\n",
5143 instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs ? 1 : 0,
5144 instance->ctrl_info_buf->max_lds);
5145
5146 if (instance->max_raid_mapsize) {
5147 ventura_map_sz = instance->max_raid_mapsize *
5148 MR_MIN_MAP_SIZE; /* 64k */
5149 fusion->current_map_sz = ventura_map_sz;
5150 fusion->max_map_sz = ventura_map_sz;
5151 } else {
5152 fusion->old_map_sz =
5153 struct_size_t(struct MR_FW_RAID_MAP, ldSpanMap,
5154 instance->fw_supported_vd_count);
5155 fusion->new_map_sz = sizeof(struct MR_FW_RAID_MAP_EXT);
5156
5157 fusion->max_map_sz =
5158 max(fusion->old_map_sz, fusion->new_map_sz);
5159
5160 if (instance->supportmax256vd)
5161 fusion->current_map_sz = fusion->new_map_sz;
5162 else
5163 fusion->current_map_sz = fusion->old_map_sz;
5164 }
5165 /* irrespective of FW raid maps, driver raid map is constant */
5166 fusion->drv_map_sz = sizeof(struct MR_DRV_RAID_MAP_ALL);
5167 }
5168
5169 /*
5170 * dcmd.opcode - MR_DCMD_CTRL_SNAPDUMP_GET_PROPERTIES
5171 * dcmd.hdr.length - number of bytes to read
5172 * dcmd.sge - Ptr to MR_SNAPDUMP_PROPERTIES
5173 * Desc: Fill in snapdump properties
5174 * Status: MFI_STAT_OK- Command successful
5175 */
megasas_get_snapdump_properties(struct megasas_instance * instance)5176 void megasas_get_snapdump_properties(struct megasas_instance *instance)
5177 {
5178 int ret = 0;
5179 struct megasas_cmd *cmd;
5180 struct megasas_dcmd_frame *dcmd;
5181 struct MR_SNAPDUMP_PROPERTIES *ci;
5182 dma_addr_t ci_h = 0;
5183
5184 ci = instance->snapdump_prop;
5185 ci_h = instance->snapdump_prop_h;
5186
5187 if (!ci)
5188 return;
5189
5190 cmd = megasas_get_cmd(instance);
5191
5192 if (!cmd) {
5193 dev_dbg(&instance->pdev->dev, "Failed to get a free cmd\n");
5194 return;
5195 }
5196
5197 dcmd = &cmd->frame->dcmd;
5198
5199 memset(ci, 0, sizeof(*ci));
5200 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5201
5202 dcmd->cmd = MFI_CMD_DCMD;
5203 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5204 dcmd->sge_count = 1;
5205 dcmd->flags = MFI_FRAME_DIR_READ;
5206 dcmd->timeout = 0;
5207 dcmd->pad_0 = 0;
5208 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_SNAPDUMP_PROPERTIES));
5209 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SNAPDUMP_GET_PROPERTIES);
5210
5211 megasas_set_dma_settings(instance, dcmd, ci_h,
5212 sizeof(struct MR_SNAPDUMP_PROPERTIES));
5213
5214 if (!instance->mask_interrupts) {
5215 ret = megasas_issue_blocked_cmd(instance, cmd,
5216 MFI_IO_TIMEOUT_SECS);
5217 } else {
5218 ret = megasas_issue_polled(instance, cmd);
5219 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5220 }
5221
5222 switch (ret) {
5223 case DCMD_SUCCESS:
5224 instance->snapdump_wait_time =
5225 min_t(u8, ci->trigger_min_num_sec_before_ocr,
5226 MEGASAS_MAX_SNAP_DUMP_WAIT_TIME);
5227 break;
5228
5229 case DCMD_TIMEOUT:
5230 switch (dcmd_timeout_ocr_possible(instance)) {
5231 case INITIATE_OCR:
5232 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5233 mutex_unlock(&instance->reset_mutex);
5234 megasas_reset_fusion(instance->host,
5235 MFI_IO_TIMEOUT_OCR);
5236 mutex_lock(&instance->reset_mutex);
5237 break;
5238 case KILL_ADAPTER:
5239 megaraid_sas_kill_hba(instance);
5240 break;
5241 case IGNORE_TIMEOUT:
5242 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5243 __func__, __LINE__);
5244 break;
5245 }
5246 }
5247
5248 if (ret != DCMD_TIMEOUT)
5249 megasas_return_cmd(instance, cmd);
5250 }
5251
5252 /**
5253 * megasas_get_ctrl_info - Returns FW's controller structure
5254 * @instance: Adapter soft state
5255 *
5256 * Issues an internal command (DCMD) to get the FW's controller structure.
5257 * This information is mainly used to find out the maximum IO transfer per
5258 * command supported by the FW.
5259 */
5260 int
megasas_get_ctrl_info(struct megasas_instance * instance)5261 megasas_get_ctrl_info(struct megasas_instance *instance)
5262 {
5263 int ret = 0;
5264 struct megasas_cmd *cmd;
5265 struct megasas_dcmd_frame *dcmd;
5266 struct megasas_ctrl_info *ci;
5267 dma_addr_t ci_h = 0;
5268
5269 ci = instance->ctrl_info_buf;
5270 ci_h = instance->ctrl_info_buf_h;
5271
5272 cmd = megasas_get_cmd(instance);
5273
5274 if (!cmd) {
5275 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a free cmd\n");
5276 return -ENOMEM;
5277 }
5278
5279 dcmd = &cmd->frame->dcmd;
5280
5281 memset(ci, 0, sizeof(*ci));
5282 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5283
5284 dcmd->cmd = MFI_CMD_DCMD;
5285 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5286 dcmd->sge_count = 1;
5287 dcmd->flags = MFI_FRAME_DIR_READ;
5288 dcmd->timeout = 0;
5289 dcmd->pad_0 = 0;
5290 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_ctrl_info));
5291 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO);
5292 dcmd->mbox.b[0] = 1;
5293
5294 megasas_set_dma_settings(instance, dcmd, ci_h,
5295 sizeof(struct megasas_ctrl_info));
5296
5297 if ((instance->adapter_type != MFI_SERIES) &&
5298 !instance->mask_interrupts) {
5299 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
5300 } else {
5301 ret = megasas_issue_polled(instance, cmd);
5302 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5303 }
5304
5305 switch (ret) {
5306 case DCMD_SUCCESS:
5307 /* Save required controller information in
5308 * CPU endianness format.
5309 */
5310 le32_to_cpus((u32 *)&ci->properties.OnOffProperties);
5311 le16_to_cpus((u16 *)&ci->properties.on_off_properties2);
5312 le32_to_cpus((u32 *)&ci->adapterOperations2);
5313 le32_to_cpus((u32 *)&ci->adapterOperations3);
5314 le16_to_cpus((u16 *)&ci->adapter_operations4);
5315 le32_to_cpus((u32 *)&ci->adapter_operations5);
5316
5317 /* Update the latest Ext VD info.
5318 * From Init path, store current firmware details.
5319 * From OCR path, detect any firmware properties changes.
5320 * in case of Firmware upgrade without system reboot.
5321 */
5322 megasas_update_ext_vd_details(instance);
5323 instance->support_seqnum_jbod_fp =
5324 ci->adapterOperations3.useSeqNumJbodFP;
5325 instance->support_morethan256jbod =
5326 ci->adapter_operations4.support_pd_map_target_id;
5327 instance->support_nvme_passthru =
5328 ci->adapter_operations4.support_nvme_passthru;
5329 instance->support_pci_lane_margining =
5330 ci->adapter_operations5.support_pci_lane_margining;
5331 instance->task_abort_tmo = ci->TaskAbortTO;
5332 instance->max_reset_tmo = ci->MaxResetTO;
5333
5334 /*Check whether controller is iMR or MR */
5335 instance->is_imr = (ci->memory_size ? 0 : 1);
5336
5337 instance->snapdump_wait_time =
5338 (ci->properties.on_off_properties2.enable_snap_dump ?
5339 MEGASAS_DEFAULT_SNAP_DUMP_WAIT_TIME : 0);
5340
5341 instance->enable_fw_dev_list =
5342 ci->properties.on_off_properties2.enable_fw_dev_list;
5343
5344 dev_info(&instance->pdev->dev,
5345 "controller type\t: %s(%dMB)\n",
5346 instance->is_imr ? "iMR" : "MR",
5347 le16_to_cpu(ci->memory_size));
5348
5349 instance->disableOnlineCtrlReset =
5350 ci->properties.OnOffProperties.disableOnlineCtrlReset;
5351 instance->secure_jbod_support =
5352 ci->adapterOperations3.supportSecurityonJBOD;
5353 dev_info(&instance->pdev->dev, "Online Controller Reset(OCR)\t: %s\n",
5354 instance->disableOnlineCtrlReset ? "Disabled" : "Enabled");
5355 dev_info(&instance->pdev->dev, "Secure JBOD support\t: %s\n",
5356 instance->secure_jbod_support ? "Yes" : "No");
5357 dev_info(&instance->pdev->dev, "NVMe passthru support\t: %s\n",
5358 instance->support_nvme_passthru ? "Yes" : "No");
5359 dev_info(&instance->pdev->dev,
5360 "FW provided TM TaskAbort/Reset timeout\t: %d secs/%d secs\n",
5361 instance->task_abort_tmo, instance->max_reset_tmo);
5362 dev_info(&instance->pdev->dev, "JBOD sequence map support\t: %s\n",
5363 instance->support_seqnum_jbod_fp ? "Yes" : "No");
5364 dev_info(&instance->pdev->dev, "PCI Lane Margining support\t: %s\n",
5365 instance->support_pci_lane_margining ? "Yes" : "No");
5366
5367 break;
5368
5369 case DCMD_TIMEOUT:
5370 switch (dcmd_timeout_ocr_possible(instance)) {
5371 case INITIATE_OCR:
5372 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5373 mutex_unlock(&instance->reset_mutex);
5374 megasas_reset_fusion(instance->host,
5375 MFI_IO_TIMEOUT_OCR);
5376 mutex_lock(&instance->reset_mutex);
5377 break;
5378 case KILL_ADAPTER:
5379 megaraid_sas_kill_hba(instance);
5380 break;
5381 case IGNORE_TIMEOUT:
5382 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5383 __func__, __LINE__);
5384 break;
5385 }
5386 break;
5387 case DCMD_FAILED:
5388 megaraid_sas_kill_hba(instance);
5389 break;
5390
5391 }
5392
5393 if (ret != DCMD_TIMEOUT)
5394 megasas_return_cmd(instance, cmd);
5395
5396 return ret;
5397 }
5398
5399 /*
5400 * megasas_set_crash_dump_params - Sends address of crash dump DMA buffer
5401 * to firmware
5402 *
5403 * @instance: Adapter soft state
5404 * @crash_buf_state - tell FW to turn ON/OFF crash dump feature
5405 MR_CRASH_BUF_TURN_OFF = 0
5406 MR_CRASH_BUF_TURN_ON = 1
5407 * @return 0 on success non-zero on failure.
5408 * Issues an internal command (DCMD) to set parameters for crash dump feature.
5409 * Driver will send address of crash dump DMA buffer and set mbox to tell FW
5410 * that driver supports crash dump feature. This DCMD will be sent only if
5411 * crash dump feature is supported by the FW.
5412 *
5413 */
megasas_set_crash_dump_params(struct megasas_instance * instance,u8 crash_buf_state)5414 int megasas_set_crash_dump_params(struct megasas_instance *instance,
5415 u8 crash_buf_state)
5416 {
5417 int ret = 0;
5418 struct megasas_cmd *cmd;
5419 struct megasas_dcmd_frame *dcmd;
5420
5421 cmd = megasas_get_cmd(instance);
5422
5423 if (!cmd) {
5424 dev_err(&instance->pdev->dev, "Failed to get a free cmd\n");
5425 return -ENOMEM;
5426 }
5427
5428
5429 dcmd = &cmd->frame->dcmd;
5430
5431 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5432 dcmd->mbox.b[0] = crash_buf_state;
5433 dcmd->cmd = MFI_CMD_DCMD;
5434 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5435 dcmd->sge_count = 1;
5436 dcmd->flags = MFI_FRAME_DIR_NONE;
5437 dcmd->timeout = 0;
5438 dcmd->pad_0 = 0;
5439 dcmd->data_xfer_len = cpu_to_le32(CRASH_DMA_BUF_SIZE);
5440 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SET_CRASH_DUMP_PARAMS);
5441
5442 megasas_set_dma_settings(instance, dcmd, instance->crash_dump_h,
5443 CRASH_DMA_BUF_SIZE);
5444
5445 if ((instance->adapter_type != MFI_SERIES) &&
5446 !instance->mask_interrupts)
5447 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
5448 else
5449 ret = megasas_issue_polled(instance, cmd);
5450
5451 if (ret == DCMD_TIMEOUT) {
5452 switch (dcmd_timeout_ocr_possible(instance)) {
5453 case INITIATE_OCR:
5454 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5455 megasas_reset_fusion(instance->host,
5456 MFI_IO_TIMEOUT_OCR);
5457 break;
5458 case KILL_ADAPTER:
5459 megaraid_sas_kill_hba(instance);
5460 break;
5461 case IGNORE_TIMEOUT:
5462 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5463 __func__, __LINE__);
5464 break;
5465 }
5466 } else
5467 megasas_return_cmd(instance, cmd);
5468
5469 return ret;
5470 }
5471
5472 /**
5473 * megasas_issue_init_mfi - Initializes the FW
5474 * @instance: Adapter soft state
5475 *
5476 * Issues the INIT MFI cmd
5477 */
5478 static int
megasas_issue_init_mfi(struct megasas_instance * instance)5479 megasas_issue_init_mfi(struct megasas_instance *instance)
5480 {
5481 __le32 context;
5482 struct megasas_cmd *cmd;
5483 struct megasas_init_frame *init_frame;
5484 struct megasas_init_queue_info *initq_info;
5485 dma_addr_t init_frame_h;
5486 dma_addr_t initq_info_h;
5487
5488 /*
5489 * Prepare a init frame. Note the init frame points to queue info
5490 * structure. Each frame has SGL allocated after first 64 bytes. For
5491 * this frame - since we don't need any SGL - we use SGL's space as
5492 * queue info structure
5493 *
5494 * We will not get a NULL command below. We just created the pool.
5495 */
5496 cmd = megasas_get_cmd(instance);
5497
5498 init_frame = (struct megasas_init_frame *)cmd->frame;
5499 initq_info = (struct megasas_init_queue_info *)
5500 ((unsigned long)init_frame + 64);
5501
5502 init_frame_h = cmd->frame_phys_addr;
5503 initq_info_h = init_frame_h + 64;
5504
5505 context = init_frame->context;
5506 memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
5507 memset(initq_info, 0, sizeof(struct megasas_init_queue_info));
5508 init_frame->context = context;
5509
5510 initq_info->reply_queue_entries = cpu_to_le32(instance->max_fw_cmds + 1);
5511 initq_info->reply_queue_start_phys_addr_lo = cpu_to_le32(instance->reply_queue_h);
5512
5513 initq_info->producer_index_phys_addr_lo = cpu_to_le32(instance->producer_h);
5514 initq_info->consumer_index_phys_addr_lo = cpu_to_le32(instance->consumer_h);
5515
5516 init_frame->cmd = MFI_CMD_INIT;
5517 init_frame->cmd_status = MFI_STAT_INVALID_STATUS;
5518 init_frame->queue_info_new_phys_addr_lo =
5519 cpu_to_le32(lower_32_bits(initq_info_h));
5520 init_frame->queue_info_new_phys_addr_hi =
5521 cpu_to_le32(upper_32_bits(initq_info_h));
5522
5523 init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info));
5524
5525 /*
5526 * disable the intr before firing the init frame to FW
5527 */
5528 instance->instancet->disable_intr(instance);
5529
5530 /*
5531 * Issue the init frame in polled mode
5532 */
5533
5534 if (megasas_issue_polled(instance, cmd)) {
5535 dev_err(&instance->pdev->dev, "Failed to init firmware\n");
5536 megasas_return_cmd(instance, cmd);
5537 goto fail_fw_init;
5538 }
5539
5540 megasas_return_cmd(instance, cmd);
5541
5542 return 0;
5543
5544 fail_fw_init:
5545 return -EINVAL;
5546 }
5547
5548 static u32
megasas_init_adapter_mfi(struct megasas_instance * instance)5549 megasas_init_adapter_mfi(struct megasas_instance *instance)
5550 {
5551 u32 context_sz;
5552 u32 reply_q_sz;
5553
5554 /*
5555 * Get various operational parameters from status register
5556 */
5557 instance->max_fw_cmds = instance->instancet->read_fw_status_reg(instance) & 0x00FFFF;
5558 /*
5559 * Reduce the max supported cmds by 1. This is to ensure that the
5560 * reply_q_sz (1 more than the max cmd that driver may send)
5561 * does not exceed max cmds that the FW can support
5562 */
5563 instance->max_fw_cmds = instance->max_fw_cmds-1;
5564 instance->max_mfi_cmds = instance->max_fw_cmds;
5565 instance->max_num_sge = (instance->instancet->read_fw_status_reg(instance) & 0xFF0000) >>
5566 0x10;
5567 /*
5568 * For MFI skinny adapters, MEGASAS_SKINNY_INT_CMDS commands
5569 * are reserved for IOCTL + driver's internal DCMDs.
5570 */
5571 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
5572 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
5573 instance->max_scsi_cmds = (instance->max_fw_cmds -
5574 MEGASAS_SKINNY_INT_CMDS);
5575 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS);
5576 } else {
5577 instance->max_scsi_cmds = (instance->max_fw_cmds -
5578 MEGASAS_INT_CMDS);
5579 sema_init(&instance->ioctl_sem, (MEGASAS_MFI_IOCTL_CMDS));
5580 }
5581
5582 instance->cur_can_queue = instance->max_scsi_cmds;
5583 /*
5584 * Create a pool of commands
5585 */
5586 if (megasas_alloc_cmds(instance))
5587 goto fail_alloc_cmds;
5588
5589 /*
5590 * Allocate memory for reply queue. Length of reply queue should
5591 * be _one_ more than the maximum commands handled by the firmware.
5592 *
5593 * Note: When FW completes commands, it places corresponding contex
5594 * values in this circular reply queue. This circular queue is a fairly
5595 * typical producer-consumer queue. FW is the producer (of completed
5596 * commands) and the driver is the consumer.
5597 */
5598 context_sz = sizeof(u32);
5599 reply_q_sz = context_sz * (instance->max_fw_cmds + 1);
5600
5601 instance->reply_queue = dma_alloc_coherent(&instance->pdev->dev,
5602 reply_q_sz, &instance->reply_queue_h, GFP_KERNEL);
5603
5604 if (!instance->reply_queue) {
5605 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Out of DMA mem for reply queue\n");
5606 goto fail_reply_queue;
5607 }
5608
5609 if (megasas_issue_init_mfi(instance))
5610 goto fail_fw_init;
5611
5612 if (megasas_get_ctrl_info(instance)) {
5613 dev_err(&instance->pdev->dev, "(%d): Could get controller info "
5614 "Fail from %s %d\n", instance->unique_id,
5615 __func__, __LINE__);
5616 goto fail_fw_init;
5617 }
5618
5619 instance->fw_support_ieee = 0;
5620 instance->fw_support_ieee =
5621 (instance->instancet->read_fw_status_reg(instance) &
5622 0x04000000);
5623
5624 dev_notice(&instance->pdev->dev, "megasas_init_mfi: fw_support_ieee=%d",
5625 instance->fw_support_ieee);
5626
5627 if (instance->fw_support_ieee)
5628 instance->flag_ieee = 1;
5629
5630 return 0;
5631
5632 fail_fw_init:
5633
5634 dma_free_coherent(&instance->pdev->dev, reply_q_sz,
5635 instance->reply_queue, instance->reply_queue_h);
5636 fail_reply_queue:
5637 megasas_free_cmds(instance);
5638
5639 fail_alloc_cmds:
5640 return 1;
5641 }
5642
5643 static
megasas_setup_irq_poll(struct megasas_instance * instance)5644 void megasas_setup_irq_poll(struct megasas_instance *instance)
5645 {
5646 struct megasas_irq_context *irq_ctx;
5647 u32 count, i;
5648
5649 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
5650
5651 /* Initialize IRQ poll */
5652 for (i = 0; i < count; i++) {
5653 irq_ctx = &instance->irq_context[i];
5654 irq_ctx->os_irq = pci_irq_vector(instance->pdev, i);
5655 irq_ctx->irq_poll_scheduled = false;
5656 irq_poll_init(&irq_ctx->irqpoll,
5657 instance->threshold_reply_count,
5658 megasas_irqpoll);
5659 }
5660 }
5661
5662 /*
5663 * megasas_setup_irqs_ioapic - register legacy interrupts.
5664 * @instance: Adapter soft state
5665 *
5666 * Do not enable interrupt, only setup ISRs.
5667 *
5668 * Return 0 on success.
5669 */
5670 static int
megasas_setup_irqs_ioapic(struct megasas_instance * instance)5671 megasas_setup_irqs_ioapic(struct megasas_instance *instance)
5672 {
5673 struct pci_dev *pdev;
5674
5675 pdev = instance->pdev;
5676 instance->irq_context[0].instance = instance;
5677 instance->irq_context[0].MSIxIndex = 0;
5678 snprintf(instance->irq_context->name, MEGASAS_MSIX_NAME_LEN, "%s%u",
5679 "megasas", instance->host->host_no);
5680 if (request_irq(pci_irq_vector(pdev, 0),
5681 instance->instancet->service_isr, IRQF_SHARED,
5682 instance->irq_context->name, &instance->irq_context[0])) {
5683 dev_err(&instance->pdev->dev,
5684 "Failed to register IRQ from %s %d\n",
5685 __func__, __LINE__);
5686 return -1;
5687 }
5688 instance->perf_mode = MR_LATENCY_PERF_MODE;
5689 instance->low_latency_index_start = 0;
5690 return 0;
5691 }
5692
5693 /**
5694 * megasas_setup_irqs_msix - register MSI-x interrupts.
5695 * @instance: Adapter soft state
5696 * @is_probe: Driver probe check
5697 *
5698 * Do not enable interrupt, only setup ISRs.
5699 *
5700 * Return 0 on success.
5701 */
5702 static int
megasas_setup_irqs_msix(struct megasas_instance * instance,u8 is_probe)5703 megasas_setup_irqs_msix(struct megasas_instance *instance, u8 is_probe)
5704 {
5705 int i, j;
5706 struct pci_dev *pdev;
5707
5708 pdev = instance->pdev;
5709
5710 /* Try MSI-x */
5711 for (i = 0; i < instance->msix_vectors; i++) {
5712 instance->irq_context[i].instance = instance;
5713 instance->irq_context[i].MSIxIndex = i;
5714 snprintf(instance->irq_context[i].name, MEGASAS_MSIX_NAME_LEN, "%s%u-msix%u",
5715 "megasas", instance->host->host_no, i);
5716 if (request_irq(pci_irq_vector(pdev, i),
5717 instance->instancet->service_isr, 0, instance->irq_context[i].name,
5718 &instance->irq_context[i])) {
5719 dev_err(&instance->pdev->dev,
5720 "Failed to register IRQ for vector %d.\n", i);
5721 for (j = 0; j < i; j++) {
5722 if (j < instance->low_latency_index_start)
5723 irq_update_affinity_hint(
5724 pci_irq_vector(pdev, j), NULL);
5725 free_irq(pci_irq_vector(pdev, j),
5726 &instance->irq_context[j]);
5727 }
5728 /* Retry irq register for IO_APIC*/
5729 instance->msix_vectors = 0;
5730 instance->msix_load_balance = false;
5731 if (is_probe) {
5732 pci_free_irq_vectors(instance->pdev);
5733 return megasas_setup_irqs_ioapic(instance);
5734 } else {
5735 return -1;
5736 }
5737 }
5738 }
5739
5740 return 0;
5741 }
5742
5743 /*
5744 * megasas_destroy_irqs- unregister interrupts.
5745 * @instance: Adapter soft state
5746 * return: void
5747 */
5748 static void
megasas_destroy_irqs(struct megasas_instance * instance)5749 megasas_destroy_irqs(struct megasas_instance *instance) {
5750
5751 int i;
5752 int count;
5753 struct megasas_irq_context *irq_ctx;
5754
5755 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
5756 if (instance->adapter_type != MFI_SERIES) {
5757 for (i = 0; i < count; i++) {
5758 irq_ctx = &instance->irq_context[i];
5759 irq_poll_disable(&irq_ctx->irqpoll);
5760 }
5761 }
5762
5763 if (instance->msix_vectors)
5764 for (i = 0; i < instance->msix_vectors; i++) {
5765 if (i < instance->low_latency_index_start)
5766 irq_update_affinity_hint(
5767 pci_irq_vector(instance->pdev, i), NULL);
5768 free_irq(pci_irq_vector(instance->pdev, i),
5769 &instance->irq_context[i]);
5770 }
5771 else
5772 free_irq(pci_irq_vector(instance->pdev, 0),
5773 &instance->irq_context[0]);
5774 }
5775
5776 /**
5777 * megasas_setup_jbod_map - setup jbod map for FP seq_number.
5778 * @instance: Adapter soft state
5779 *
5780 * Return 0 on success.
5781 */
5782 void
megasas_setup_jbod_map(struct megasas_instance * instance)5783 megasas_setup_jbod_map(struct megasas_instance *instance)
5784 {
5785 int i;
5786 struct fusion_context *fusion = instance->ctrl_context;
5787 size_t pd_seq_map_sz;
5788
5789 pd_seq_map_sz = struct_size_t(struct MR_PD_CFG_SEQ_NUM_SYNC, seq,
5790 MAX_PHYSICAL_DEVICES);
5791
5792 instance->use_seqnum_jbod_fp =
5793 instance->support_seqnum_jbod_fp;
5794 if (reset_devices || !fusion ||
5795 !instance->support_seqnum_jbod_fp) {
5796 dev_info(&instance->pdev->dev,
5797 "JBOD sequence map is disabled %s %d\n",
5798 __func__, __LINE__);
5799 instance->use_seqnum_jbod_fp = false;
5800 return;
5801 }
5802
5803 if (fusion->pd_seq_sync[0])
5804 goto skip_alloc;
5805
5806 for (i = 0; i < JBOD_MAPS_COUNT; i++) {
5807 fusion->pd_seq_sync[i] = dma_alloc_coherent
5808 (&instance->pdev->dev, pd_seq_map_sz,
5809 &fusion->pd_seq_phys[i], GFP_KERNEL);
5810 if (!fusion->pd_seq_sync[i]) {
5811 dev_err(&instance->pdev->dev,
5812 "Failed to allocate memory from %s %d\n",
5813 __func__, __LINE__);
5814 if (i == 1) {
5815 dma_free_coherent(&instance->pdev->dev,
5816 pd_seq_map_sz, fusion->pd_seq_sync[0],
5817 fusion->pd_seq_phys[0]);
5818 fusion->pd_seq_sync[0] = NULL;
5819 }
5820 instance->use_seqnum_jbod_fp = false;
5821 return;
5822 }
5823 }
5824
5825 skip_alloc:
5826 if (!megasas_sync_pd_seq_num(instance, false) &&
5827 !megasas_sync_pd_seq_num(instance, true))
5828 instance->use_seqnum_jbod_fp = true;
5829 else
5830 instance->use_seqnum_jbod_fp = false;
5831 }
5832
megasas_setup_reply_map(struct megasas_instance * instance)5833 static void megasas_setup_reply_map(struct megasas_instance *instance)
5834 {
5835 const struct cpumask *mask;
5836 unsigned int queue, cpu, low_latency_index_start;
5837
5838 low_latency_index_start = instance->low_latency_index_start;
5839
5840 for (queue = low_latency_index_start; queue < instance->msix_vectors; queue++) {
5841 mask = pci_irq_get_affinity(instance->pdev, queue);
5842 if (!mask)
5843 goto fallback;
5844
5845 for_each_cpu(cpu, mask)
5846 instance->reply_map[cpu] = queue;
5847 }
5848 return;
5849
5850 fallback:
5851 queue = low_latency_index_start;
5852 for_each_possible_cpu(cpu) {
5853 instance->reply_map[cpu] = queue;
5854 if (queue == (instance->msix_vectors - 1))
5855 queue = low_latency_index_start;
5856 else
5857 queue++;
5858 }
5859 }
5860
5861 /**
5862 * megasas_get_device_list - Get the PD and LD device list from FW.
5863 * @instance: Adapter soft state
5864 * @return: Success or failure
5865 *
5866 * Issue DCMDs to Firmware to get the PD and LD list.
5867 * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination
5868 * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list.
5869 */
5870 static
megasas_get_device_list(struct megasas_instance * instance)5871 int megasas_get_device_list(struct megasas_instance *instance)
5872 {
5873 if (instance->enable_fw_dev_list) {
5874 if (megasas_host_device_list_query(instance, true))
5875 return FAILED;
5876 } else {
5877 if (megasas_get_pd_list(instance) < 0) {
5878 dev_err(&instance->pdev->dev, "failed to get PD list\n");
5879 return FAILED;
5880 }
5881
5882 if (megasas_ld_list_query(instance,
5883 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) {
5884 dev_err(&instance->pdev->dev, "failed to get LD list\n");
5885 return FAILED;
5886 }
5887 }
5888
5889 return SUCCESS;
5890 }
5891
5892 /**
5893 * megasas_set_high_iops_queue_affinity_and_hint - Set affinity and hint
5894 * for high IOPS queues
5895 * @instance: Adapter soft state
5896 * return: void
5897 */
5898 static inline void
megasas_set_high_iops_queue_affinity_and_hint(struct megasas_instance * instance)5899 megasas_set_high_iops_queue_affinity_and_hint(struct megasas_instance *instance)
5900 {
5901 int i;
5902 unsigned int irq;
5903 const struct cpumask *mask;
5904
5905 if (instance->perf_mode == MR_BALANCED_PERF_MODE) {
5906 mask = cpumask_of_node(dev_to_node(&instance->pdev->dev));
5907
5908 for (i = 0; i < instance->low_latency_index_start; i++) {
5909 irq = pci_irq_vector(instance->pdev, i);
5910 irq_set_affinity_and_hint(irq, mask);
5911 }
5912 }
5913 }
5914
5915 static int
__megasas_alloc_irq_vectors(struct megasas_instance * instance)5916 __megasas_alloc_irq_vectors(struct megasas_instance *instance)
5917 {
5918 int i, irq_flags;
5919 struct irq_affinity desc = { .pre_vectors = instance->low_latency_index_start };
5920 struct irq_affinity *descp = &desc;
5921
5922 irq_flags = PCI_IRQ_MSIX;
5923
5924 if (instance->smp_affinity_enable)
5925 irq_flags |= PCI_IRQ_AFFINITY | PCI_IRQ_ALL_TYPES;
5926 else
5927 descp = NULL;
5928
5929 /* Do not allocate msix vectors for poll_queues.
5930 * msix_vectors is always within a range of FW supported reply queue.
5931 */
5932 i = pci_alloc_irq_vectors_affinity(instance->pdev,
5933 instance->low_latency_index_start,
5934 instance->msix_vectors - instance->iopoll_q_count, irq_flags, descp);
5935
5936 return i;
5937 }
5938
5939 /**
5940 * megasas_alloc_irq_vectors - Allocate IRQ vectors/enable MSI-x vectors
5941 * @instance: Adapter soft state
5942 * return: void
5943 */
5944 static void
megasas_alloc_irq_vectors(struct megasas_instance * instance)5945 megasas_alloc_irq_vectors(struct megasas_instance *instance)
5946 {
5947 int i;
5948 unsigned int num_msix_req;
5949
5950 instance->iopoll_q_count = 0;
5951 if ((instance->adapter_type != MFI_SERIES) &&
5952 poll_queues) {
5953
5954 instance->perf_mode = MR_LATENCY_PERF_MODE;
5955 instance->low_latency_index_start = 1;
5956
5957 /* reserve for default and non-mananged pre-vector. */
5958 if (instance->msix_vectors > (poll_queues + 2))
5959 instance->iopoll_q_count = poll_queues;
5960 else
5961 instance->iopoll_q_count = 0;
5962
5963 num_msix_req = num_online_cpus() + instance->low_latency_index_start;
5964 instance->msix_vectors = min(num_msix_req,
5965 instance->msix_vectors);
5966
5967 }
5968
5969 i = __megasas_alloc_irq_vectors(instance);
5970
5971 if (((instance->perf_mode == MR_BALANCED_PERF_MODE)
5972 || instance->iopoll_q_count) &&
5973 (i != (instance->msix_vectors - instance->iopoll_q_count))) {
5974 if (instance->msix_vectors)
5975 pci_free_irq_vectors(instance->pdev);
5976 /* Disable Balanced IOPS mode and try realloc vectors */
5977 instance->perf_mode = MR_LATENCY_PERF_MODE;
5978 instance->low_latency_index_start = 1;
5979 num_msix_req = num_online_cpus() + instance->low_latency_index_start;
5980
5981 instance->msix_vectors = min(num_msix_req,
5982 instance->msix_vectors);
5983
5984 instance->iopoll_q_count = 0;
5985 i = __megasas_alloc_irq_vectors(instance);
5986
5987 }
5988
5989 dev_info(&instance->pdev->dev,
5990 "requested/available msix %d/%d poll_queue %d\n",
5991 instance->msix_vectors - instance->iopoll_q_count,
5992 i, instance->iopoll_q_count);
5993
5994 if (i > 0)
5995 instance->msix_vectors = i;
5996 else
5997 instance->msix_vectors = 0;
5998
5999 if (instance->smp_affinity_enable)
6000 megasas_set_high_iops_queue_affinity_and_hint(instance);
6001 }
6002
6003 /**
6004 * megasas_init_fw - Initializes the FW
6005 * @instance: Adapter soft state
6006 *
6007 * This is the main function for initializing firmware
6008 */
6009
megasas_init_fw(struct megasas_instance * instance)6010 static int megasas_init_fw(struct megasas_instance *instance)
6011 {
6012 u32 max_sectors_1;
6013 u32 max_sectors_2, tmp_sectors, msix_enable;
6014 u32 scratch_pad_1, scratch_pad_2, scratch_pad_3, status_reg;
6015 resource_size_t base_addr;
6016 void *base_addr_phys;
6017 struct megasas_ctrl_info *ctrl_info = NULL;
6018 unsigned long bar_list;
6019 int i, j, loop;
6020 struct IOV_111 *iovPtr;
6021 struct fusion_context *fusion;
6022 bool intr_coalescing;
6023 unsigned int num_msix_req;
6024 u16 lnksta, speed;
6025
6026 fusion = instance->ctrl_context;
6027
6028 /* Find first memory bar */
6029 bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM);
6030 instance->bar = find_first_bit(&bar_list, BITS_PER_LONG);
6031 if (pci_request_selected_regions(instance->pdev, 1<<instance->bar,
6032 "megasas: LSI")) {
6033 dev_printk(KERN_DEBUG, &instance->pdev->dev, "IO memory region busy!\n");
6034 return -EBUSY;
6035 }
6036
6037 base_addr = pci_resource_start(instance->pdev, instance->bar);
6038 instance->reg_set = ioremap(base_addr, 8192);
6039
6040 if (!instance->reg_set) {
6041 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to map IO mem\n");
6042 goto fail_ioremap;
6043 }
6044
6045 base_addr_phys = &base_addr;
6046 dev_printk(KERN_DEBUG, &instance->pdev->dev,
6047 "BAR:0x%lx BAR's base_addr(phys):%pa mapped virt_addr:0x%p\n",
6048 instance->bar, base_addr_phys, instance->reg_set);
6049
6050 if (instance->adapter_type != MFI_SERIES)
6051 instance->instancet = &megasas_instance_template_fusion;
6052 else {
6053 switch (instance->pdev->device) {
6054 case PCI_DEVICE_ID_LSI_SAS1078R:
6055 case PCI_DEVICE_ID_LSI_SAS1078DE:
6056 instance->instancet = &megasas_instance_template_ppc;
6057 break;
6058 case PCI_DEVICE_ID_LSI_SAS1078GEN2:
6059 case PCI_DEVICE_ID_LSI_SAS0079GEN2:
6060 instance->instancet = &megasas_instance_template_gen2;
6061 break;
6062 case PCI_DEVICE_ID_LSI_SAS0073SKINNY:
6063 case PCI_DEVICE_ID_LSI_SAS0071SKINNY:
6064 instance->instancet = &megasas_instance_template_skinny;
6065 break;
6066 case PCI_DEVICE_ID_LSI_SAS1064R:
6067 case PCI_DEVICE_ID_DELL_PERC5:
6068 default:
6069 instance->instancet = &megasas_instance_template_xscale;
6070 instance->pd_list_not_supported = 1;
6071 break;
6072 }
6073 }
6074
6075 if (megasas_transition_to_ready(instance, 0)) {
6076 dev_info(&instance->pdev->dev,
6077 "Failed to transition controller to ready from %s!\n",
6078 __func__);
6079 if (instance->adapter_type != MFI_SERIES) {
6080 status_reg = instance->instancet->read_fw_status_reg(
6081 instance);
6082 if (status_reg & MFI_RESET_ADAPTER) {
6083 if (megasas_adp_reset_wait_for_ready
6084 (instance, true, 0) == FAILED)
6085 goto fail_ready_state;
6086 } else {
6087 goto fail_ready_state;
6088 }
6089 } else {
6090 atomic_set(&instance->fw_reset_no_pci_access, 1);
6091 instance->instancet->adp_reset
6092 (instance, instance->reg_set);
6093 atomic_set(&instance->fw_reset_no_pci_access, 0);
6094
6095 /*waiting for about 30 second before retry*/
6096 ssleep(30);
6097
6098 if (megasas_transition_to_ready(instance, 0))
6099 goto fail_ready_state;
6100 }
6101
6102 dev_info(&instance->pdev->dev,
6103 "FW restarted successfully from %s!\n",
6104 __func__);
6105 }
6106
6107 megasas_init_ctrl_params(instance);
6108
6109 if (megasas_set_dma_mask(instance))
6110 goto fail_ready_state;
6111
6112 if (megasas_alloc_ctrl_mem(instance))
6113 goto fail_alloc_dma_buf;
6114
6115 if (megasas_alloc_ctrl_dma_buffers(instance))
6116 goto fail_alloc_dma_buf;
6117
6118 fusion = instance->ctrl_context;
6119
6120 if (instance->adapter_type >= VENTURA_SERIES) {
6121 scratch_pad_2 =
6122 megasas_readl(instance,
6123 &instance->reg_set->outbound_scratch_pad_2);
6124 instance->max_raid_mapsize = ((scratch_pad_2 >>
6125 MR_MAX_RAID_MAP_SIZE_OFFSET_SHIFT) &
6126 MR_MAX_RAID_MAP_SIZE_MASK);
6127 }
6128
6129 instance->enable_sdev_max_qd = enable_sdev_max_qd;
6130
6131 switch (instance->adapter_type) {
6132 case VENTURA_SERIES:
6133 fusion->pcie_bw_limitation = true;
6134 break;
6135 case AERO_SERIES:
6136 fusion->r56_div_offload = true;
6137 break;
6138 default:
6139 break;
6140 }
6141
6142 /* Check if MSI-X is supported while in ready state */
6143 msix_enable = (instance->instancet->read_fw_status_reg(instance) &
6144 0x4000000) >> 0x1a;
6145 if (msix_enable && !msix_disable) {
6146
6147 scratch_pad_1 = megasas_readl
6148 (instance, &instance->reg_set->outbound_scratch_pad_1);
6149 /* Check max MSI-X vectors */
6150 if (fusion) {
6151 if (instance->adapter_type == THUNDERBOLT_SERIES) {
6152 /* Thunderbolt Series*/
6153 instance->msix_vectors = (scratch_pad_1
6154 & MR_MAX_REPLY_QUEUES_OFFSET) + 1;
6155 } else {
6156 instance->msix_vectors = ((scratch_pad_1
6157 & MR_MAX_REPLY_QUEUES_EXT_OFFSET)
6158 >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1;
6159
6160 /*
6161 * For Invader series, > 8 MSI-x vectors
6162 * supported by FW/HW implies combined
6163 * reply queue mode is enabled.
6164 * For Ventura series, > 16 MSI-x vectors
6165 * supported by FW/HW implies combined
6166 * reply queue mode is enabled.
6167 */
6168 switch (instance->adapter_type) {
6169 case INVADER_SERIES:
6170 if (instance->msix_vectors > 8)
6171 instance->msix_combined = true;
6172 break;
6173 case AERO_SERIES:
6174 case VENTURA_SERIES:
6175 if (instance->msix_vectors > 16)
6176 instance->msix_combined = true;
6177 break;
6178 }
6179
6180 if (rdpq_enable)
6181 instance->is_rdpq = (scratch_pad_1 & MR_RDPQ_MODE_OFFSET) ?
6182 1 : 0;
6183
6184 if (instance->adapter_type >= INVADER_SERIES &&
6185 !instance->msix_combined) {
6186 instance->msix_load_balance = true;
6187 instance->smp_affinity_enable = false;
6188 }
6189
6190 /* Save 1-15 reply post index address to local memory
6191 * Index 0 is already saved from reg offset
6192 * MPI2_REPLY_POST_HOST_INDEX_OFFSET
6193 */
6194 for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) {
6195 instance->reply_post_host_index_addr[loop] =
6196 (u32 __iomem *)
6197 ((u8 __iomem *)instance->reg_set +
6198 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET
6199 + (loop * 0x10));
6200 }
6201 }
6202
6203 dev_info(&instance->pdev->dev,
6204 "firmware supports msix\t: (%d)",
6205 instance->msix_vectors);
6206 if (msix_vectors)
6207 instance->msix_vectors = min(msix_vectors,
6208 instance->msix_vectors);
6209 } else /* MFI adapters */
6210 instance->msix_vectors = 1;
6211
6212
6213 /*
6214 * For Aero (if some conditions are met), driver will configure a
6215 * few additional reply queues with interrupt coalescing enabled.
6216 * These queues with interrupt coalescing enabled are called
6217 * High IOPS queues and rest of reply queues (based on number of
6218 * logical CPUs) are termed as Low latency queues.
6219 *
6220 * Total Number of reply queues = High IOPS queues + low latency queues
6221 *
6222 * For rest of fusion adapters, 1 additional reply queue will be
6223 * reserved for management commands, rest of reply queues
6224 * (based on number of logical CPUs) will be used for IOs and
6225 * referenced as IO queues.
6226 * Total Number of reply queues = 1 + IO queues
6227 *
6228 * MFI adapters supports single MSI-x so single reply queue
6229 * will be used for IO and management commands.
6230 */
6231
6232 intr_coalescing = (scratch_pad_1 & MR_INTR_COALESCING_SUPPORT_OFFSET) ?
6233 true : false;
6234 if (intr_coalescing &&
6235 (num_online_cpus() >= MR_HIGH_IOPS_QUEUE_COUNT) &&
6236 (instance->msix_vectors == MEGASAS_MAX_MSIX_QUEUES))
6237 instance->perf_mode = MR_BALANCED_PERF_MODE;
6238 else
6239 instance->perf_mode = MR_LATENCY_PERF_MODE;
6240
6241
6242 if (instance->adapter_type == AERO_SERIES) {
6243 pcie_capability_read_word(instance->pdev, PCI_EXP_LNKSTA, &lnksta);
6244 speed = lnksta & PCI_EXP_LNKSTA_CLS;
6245
6246 /*
6247 * For Aero, if PCIe link speed is <16 GT/s, then driver should operate
6248 * in latency perf mode and enable R1 PCI bandwidth algorithm
6249 */
6250 if (speed < 0x4) {
6251 instance->perf_mode = MR_LATENCY_PERF_MODE;
6252 fusion->pcie_bw_limitation = true;
6253 }
6254
6255 /*
6256 * Performance mode settings provided through module parameter-perf_mode will
6257 * take affect only for:
6258 * 1. Aero family of adapters.
6259 * 2. When user sets module parameter- perf_mode in range of 0-2.
6260 */
6261 if ((perf_mode >= MR_BALANCED_PERF_MODE) &&
6262 (perf_mode <= MR_LATENCY_PERF_MODE))
6263 instance->perf_mode = perf_mode;
6264 /*
6265 * If intr coalescing is not supported by controller FW, then IOPS
6266 * and Balanced modes are not feasible.
6267 */
6268 if (!intr_coalescing)
6269 instance->perf_mode = MR_LATENCY_PERF_MODE;
6270
6271 }
6272
6273 if (instance->perf_mode == MR_BALANCED_PERF_MODE)
6274 instance->low_latency_index_start =
6275 MR_HIGH_IOPS_QUEUE_COUNT;
6276 else
6277 instance->low_latency_index_start = 1;
6278
6279 num_msix_req = num_online_cpus() + instance->low_latency_index_start;
6280
6281 instance->msix_vectors = min(num_msix_req,
6282 instance->msix_vectors);
6283
6284 megasas_alloc_irq_vectors(instance);
6285 if (!instance->msix_vectors)
6286 instance->msix_load_balance = false;
6287 }
6288 /*
6289 * MSI-X host index 0 is common for all adapter.
6290 * It is used for all MPT based Adapters.
6291 */
6292 if (instance->msix_combined) {
6293 instance->reply_post_host_index_addr[0] =
6294 (u32 *)((u8 *)instance->reg_set +
6295 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET);
6296 } else {
6297 instance->reply_post_host_index_addr[0] =
6298 (u32 *)((u8 *)instance->reg_set +
6299 MPI2_REPLY_POST_HOST_INDEX_OFFSET);
6300 }
6301
6302 if (!instance->msix_vectors) {
6303 i = pci_alloc_irq_vectors(instance->pdev, 1, 1, PCI_IRQ_LEGACY);
6304 if (i < 0)
6305 goto fail_init_adapter;
6306 }
6307
6308 megasas_setup_reply_map(instance);
6309
6310 dev_info(&instance->pdev->dev,
6311 "current msix/online cpus\t: (%d/%d)\n",
6312 instance->msix_vectors, (unsigned int)num_online_cpus());
6313 dev_info(&instance->pdev->dev,
6314 "RDPQ mode\t: (%s)\n", instance->is_rdpq ? "enabled" : "disabled");
6315
6316 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
6317 (unsigned long)instance);
6318
6319 /*
6320 * Below are default value for legacy Firmware.
6321 * non-fusion based controllers
6322 */
6323 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
6324 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
6325 /* Get operational params, sge flags, send init cmd to controller */
6326 if (instance->instancet->init_adapter(instance))
6327 goto fail_init_adapter;
6328
6329 if (instance->adapter_type >= VENTURA_SERIES) {
6330 scratch_pad_3 =
6331 megasas_readl(instance,
6332 &instance->reg_set->outbound_scratch_pad_3);
6333 if ((scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK) >=
6334 MR_DEFAULT_NVME_PAGE_SHIFT)
6335 instance->nvme_page_size =
6336 (1 << (scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK));
6337
6338 dev_info(&instance->pdev->dev,
6339 "NVME page size\t: (%d)\n", instance->nvme_page_size);
6340 }
6341
6342 if (instance->msix_vectors ?
6343 megasas_setup_irqs_msix(instance, 1) :
6344 megasas_setup_irqs_ioapic(instance))
6345 goto fail_init_adapter;
6346
6347 if (instance->adapter_type != MFI_SERIES)
6348 megasas_setup_irq_poll(instance);
6349
6350 instance->instancet->enable_intr(instance);
6351
6352 dev_info(&instance->pdev->dev, "INIT adapter done\n");
6353
6354 megasas_setup_jbod_map(instance);
6355
6356 if (megasas_get_device_list(instance) != SUCCESS) {
6357 dev_err(&instance->pdev->dev,
6358 "%s: megasas_get_device_list failed\n",
6359 __func__);
6360 goto fail_get_ld_pd_list;
6361 }
6362
6363 /* stream detection initialization */
6364 if (instance->adapter_type >= VENTURA_SERIES) {
6365 fusion->stream_detect_by_ld =
6366 kcalloc(MAX_LOGICAL_DRIVES_EXT,
6367 sizeof(struct LD_STREAM_DETECT *),
6368 GFP_KERNEL);
6369 if (!fusion->stream_detect_by_ld) {
6370 dev_err(&instance->pdev->dev,
6371 "unable to allocate stream detection for pool of LDs\n");
6372 goto fail_get_ld_pd_list;
6373 }
6374 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i) {
6375 fusion->stream_detect_by_ld[i] =
6376 kzalloc(sizeof(struct LD_STREAM_DETECT),
6377 GFP_KERNEL);
6378 if (!fusion->stream_detect_by_ld[i]) {
6379 dev_err(&instance->pdev->dev,
6380 "unable to allocate stream detect by LD\n ");
6381 for (j = 0; j < i; ++j)
6382 kfree(fusion->stream_detect_by_ld[j]);
6383 kfree(fusion->stream_detect_by_ld);
6384 fusion->stream_detect_by_ld = NULL;
6385 goto fail_get_ld_pd_list;
6386 }
6387 fusion->stream_detect_by_ld[i]->mru_bit_map
6388 = MR_STREAM_BITMAP;
6389 }
6390 }
6391
6392 /*
6393 * Compute the max allowed sectors per IO: The controller info has two
6394 * limits on max sectors. Driver should use the minimum of these two.
6395 *
6396 * 1 << stripe_sz_ops.min = max sectors per strip
6397 *
6398 * Note that older firmwares ( < FW ver 30) didn't report information
6399 * to calculate max_sectors_1. So the number ended up as zero always.
6400 */
6401 tmp_sectors = 0;
6402 ctrl_info = instance->ctrl_info_buf;
6403
6404 max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) *
6405 le16_to_cpu(ctrl_info->max_strips_per_io);
6406 max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size);
6407
6408 tmp_sectors = min_t(u32, max_sectors_1, max_sectors_2);
6409
6410 instance->peerIsPresent = ctrl_info->cluster.peerIsPresent;
6411 instance->passive = ctrl_info->cluster.passive;
6412 memcpy(instance->clusterId, ctrl_info->clusterId, sizeof(instance->clusterId));
6413 instance->UnevenSpanSupport =
6414 ctrl_info->adapterOperations2.supportUnevenSpans;
6415 if (instance->UnevenSpanSupport) {
6416 struct fusion_context *fusion = instance->ctrl_context;
6417 if (MR_ValidateMapInfo(instance, instance->map_id))
6418 fusion->fast_path_io = 1;
6419 else
6420 fusion->fast_path_io = 0;
6421
6422 }
6423 if (ctrl_info->host_interface.SRIOV) {
6424 instance->requestorId = ctrl_info->iov.requestorId;
6425 if (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) {
6426 if (!ctrl_info->adapterOperations2.activePassive)
6427 instance->PlasmaFW111 = 1;
6428
6429 dev_info(&instance->pdev->dev, "SR-IOV: firmware type: %s\n",
6430 instance->PlasmaFW111 ? "1.11" : "new");
6431
6432 if (instance->PlasmaFW111) {
6433 iovPtr = (struct IOV_111 *)
6434 ((unsigned char *)ctrl_info + IOV_111_OFFSET);
6435 instance->requestorId = iovPtr->requestorId;
6436 }
6437 }
6438 dev_info(&instance->pdev->dev, "SRIOV: VF requestorId %d\n",
6439 instance->requestorId);
6440 }
6441
6442 instance->crash_dump_fw_support =
6443 ctrl_info->adapterOperations3.supportCrashDump;
6444 instance->crash_dump_drv_support =
6445 (instance->crash_dump_fw_support &&
6446 instance->crash_dump_buf);
6447 if (instance->crash_dump_drv_support)
6448 megasas_set_crash_dump_params(instance,
6449 MR_CRASH_BUF_TURN_OFF);
6450
6451 else {
6452 if (instance->crash_dump_buf)
6453 dma_free_coherent(&instance->pdev->dev,
6454 CRASH_DMA_BUF_SIZE,
6455 instance->crash_dump_buf,
6456 instance->crash_dump_h);
6457 instance->crash_dump_buf = NULL;
6458 }
6459
6460 if (instance->snapdump_wait_time) {
6461 megasas_get_snapdump_properties(instance);
6462 dev_info(&instance->pdev->dev, "Snap dump wait time\t: %d\n",
6463 instance->snapdump_wait_time);
6464 }
6465
6466 dev_info(&instance->pdev->dev,
6467 "pci id\t\t: (0x%04x)/(0x%04x)/(0x%04x)/(0x%04x)\n",
6468 le16_to_cpu(ctrl_info->pci.vendor_id),
6469 le16_to_cpu(ctrl_info->pci.device_id),
6470 le16_to_cpu(ctrl_info->pci.sub_vendor_id),
6471 le16_to_cpu(ctrl_info->pci.sub_device_id));
6472 dev_info(&instance->pdev->dev, "unevenspan support : %s\n",
6473 instance->UnevenSpanSupport ? "yes" : "no");
6474 dev_info(&instance->pdev->dev, "firmware crash dump : %s\n",
6475 instance->crash_dump_drv_support ? "yes" : "no");
6476 dev_info(&instance->pdev->dev, "JBOD sequence map : %s\n",
6477 instance->use_seqnum_jbod_fp ? "enabled" : "disabled");
6478
6479 instance->max_sectors_per_req = instance->max_num_sge *
6480 SGE_BUFFER_SIZE / 512;
6481 if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
6482 instance->max_sectors_per_req = tmp_sectors;
6483
6484 /* Check for valid throttlequeuedepth module parameter */
6485 if (throttlequeuedepth &&
6486 throttlequeuedepth <= instance->max_scsi_cmds)
6487 instance->throttlequeuedepth = throttlequeuedepth;
6488 else
6489 instance->throttlequeuedepth =
6490 MEGASAS_THROTTLE_QUEUE_DEPTH;
6491
6492 if ((resetwaittime < 1) ||
6493 (resetwaittime > MEGASAS_RESET_WAIT_TIME))
6494 resetwaittime = MEGASAS_RESET_WAIT_TIME;
6495
6496 if ((scmd_timeout < 10) || (scmd_timeout > MEGASAS_DEFAULT_CMD_TIMEOUT))
6497 scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT;
6498
6499 /* Launch SR-IOV heartbeat timer */
6500 if (instance->requestorId) {
6501 if (!megasas_sriov_start_heartbeat(instance, 1)) {
6502 megasas_start_timer(instance);
6503 } else {
6504 instance->skip_heartbeat_timer_del = 1;
6505 goto fail_get_ld_pd_list;
6506 }
6507 }
6508
6509 /*
6510 * Create and start watchdog thread which will monitor
6511 * controller state every 1 sec and trigger OCR when
6512 * it enters fault state
6513 */
6514 if (instance->adapter_type != MFI_SERIES)
6515 if (megasas_fusion_start_watchdog(instance) != SUCCESS)
6516 goto fail_start_watchdog;
6517
6518 return 0;
6519
6520 fail_start_watchdog:
6521 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
6522 del_timer_sync(&instance->sriov_heartbeat_timer);
6523 fail_get_ld_pd_list:
6524 instance->instancet->disable_intr(instance);
6525 megasas_destroy_irqs(instance);
6526 fail_init_adapter:
6527 if (instance->msix_vectors)
6528 pci_free_irq_vectors(instance->pdev);
6529 instance->msix_vectors = 0;
6530 fail_alloc_dma_buf:
6531 megasas_free_ctrl_dma_buffers(instance);
6532 megasas_free_ctrl_mem(instance);
6533 fail_ready_state:
6534 iounmap(instance->reg_set);
6535
6536 fail_ioremap:
6537 pci_release_selected_regions(instance->pdev, 1<<instance->bar);
6538
6539 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
6540 __func__, __LINE__);
6541 return -EINVAL;
6542 }
6543
6544 /**
6545 * megasas_release_mfi - Reverses the FW initialization
6546 * @instance: Adapter soft state
6547 */
megasas_release_mfi(struct megasas_instance * instance)6548 static void megasas_release_mfi(struct megasas_instance *instance)
6549 {
6550 u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1);
6551
6552 if (instance->reply_queue)
6553 dma_free_coherent(&instance->pdev->dev, reply_q_sz,
6554 instance->reply_queue, instance->reply_queue_h);
6555
6556 megasas_free_cmds(instance);
6557
6558 iounmap(instance->reg_set);
6559
6560 pci_release_selected_regions(instance->pdev, 1<<instance->bar);
6561 }
6562
6563 /**
6564 * megasas_get_seq_num - Gets latest event sequence numbers
6565 * @instance: Adapter soft state
6566 * @eli: FW event log sequence numbers information
6567 *
6568 * FW maintains a log of all events in a non-volatile area. Upper layers would
6569 * usually find out the latest sequence number of the events, the seq number at
6570 * the boot etc. They would "read" all the events below the latest seq number
6571 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq
6572 * number), they would subsribe to AEN (asynchronous event notification) and
6573 * wait for the events to happen.
6574 */
6575 static int
megasas_get_seq_num(struct megasas_instance * instance,struct megasas_evt_log_info * eli)6576 megasas_get_seq_num(struct megasas_instance *instance,
6577 struct megasas_evt_log_info *eli)
6578 {
6579 struct megasas_cmd *cmd;
6580 struct megasas_dcmd_frame *dcmd;
6581 struct megasas_evt_log_info *el_info;
6582 dma_addr_t el_info_h = 0;
6583 int ret;
6584
6585 cmd = megasas_get_cmd(instance);
6586
6587 if (!cmd) {
6588 return -ENOMEM;
6589 }
6590
6591 dcmd = &cmd->frame->dcmd;
6592 el_info = dma_alloc_coherent(&instance->pdev->dev,
6593 sizeof(struct megasas_evt_log_info),
6594 &el_info_h, GFP_KERNEL);
6595 if (!el_info) {
6596 megasas_return_cmd(instance, cmd);
6597 return -ENOMEM;
6598 }
6599
6600 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6601
6602 dcmd->cmd = MFI_CMD_DCMD;
6603 dcmd->cmd_status = 0x0;
6604 dcmd->sge_count = 1;
6605 dcmd->flags = MFI_FRAME_DIR_READ;
6606 dcmd->timeout = 0;
6607 dcmd->pad_0 = 0;
6608 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info));
6609 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO);
6610
6611 megasas_set_dma_settings(instance, dcmd, el_info_h,
6612 sizeof(struct megasas_evt_log_info));
6613
6614 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
6615 if (ret != DCMD_SUCCESS) {
6616 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
6617 __func__, __LINE__);
6618 goto dcmd_failed;
6619 }
6620
6621 /*
6622 * Copy the data back into callers buffer
6623 */
6624 eli->newest_seq_num = el_info->newest_seq_num;
6625 eli->oldest_seq_num = el_info->oldest_seq_num;
6626 eli->clear_seq_num = el_info->clear_seq_num;
6627 eli->shutdown_seq_num = el_info->shutdown_seq_num;
6628 eli->boot_seq_num = el_info->boot_seq_num;
6629
6630 dcmd_failed:
6631 dma_free_coherent(&instance->pdev->dev,
6632 sizeof(struct megasas_evt_log_info),
6633 el_info, el_info_h);
6634
6635 megasas_return_cmd(instance, cmd);
6636
6637 return ret;
6638 }
6639
6640 /**
6641 * megasas_register_aen - Registers for asynchronous event notification
6642 * @instance: Adapter soft state
6643 * @seq_num: The starting sequence number
6644 * @class_locale_word: Class of the event
6645 *
6646 * This function subscribes for AEN for events beyond the @seq_num. It requests
6647 * to be notified if and only if the event is of type @class_locale
6648 */
6649 static int
megasas_register_aen(struct megasas_instance * instance,u32 seq_num,u32 class_locale_word)6650 megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
6651 u32 class_locale_word)
6652 {
6653 int ret_val;
6654 struct megasas_cmd *cmd;
6655 struct megasas_dcmd_frame *dcmd;
6656 union megasas_evt_class_locale curr_aen;
6657 union megasas_evt_class_locale prev_aen;
6658
6659 /*
6660 * If there an AEN pending already (aen_cmd), check if the
6661 * class_locale of that pending AEN is inclusive of the new
6662 * AEN request we currently have. If it is, then we don't have
6663 * to do anything. In other words, whichever events the current
6664 * AEN request is subscribing to, have already been subscribed
6665 * to.
6666 *
6667 * If the old_cmd is _not_ inclusive, then we have to abort
6668 * that command, form a class_locale that is superset of both
6669 * old and current and re-issue to the FW
6670 */
6671
6672 curr_aen.word = class_locale_word;
6673
6674 if (instance->aen_cmd) {
6675
6676 prev_aen.word =
6677 le32_to_cpu(instance->aen_cmd->frame->dcmd.mbox.w[1]);
6678
6679 if ((curr_aen.members.class < MFI_EVT_CLASS_DEBUG) ||
6680 (curr_aen.members.class > MFI_EVT_CLASS_DEAD)) {
6681 dev_info(&instance->pdev->dev,
6682 "%s %d out of range class %d send by application\n",
6683 __func__, __LINE__, curr_aen.members.class);
6684 return 0;
6685 }
6686
6687 /*
6688 * A class whose enum value is smaller is inclusive of all
6689 * higher values. If a PROGRESS (= -1) was previously
6690 * registered, then a new registration requests for higher
6691 * classes need not be sent to FW. They are automatically
6692 * included.
6693 *
6694 * Locale numbers don't have such hierarchy. They are bitmap
6695 * values
6696 */
6697 if ((prev_aen.members.class <= curr_aen.members.class) &&
6698 !((prev_aen.members.locale & curr_aen.members.locale) ^
6699 curr_aen.members.locale)) {
6700 /*
6701 * Previously issued event registration includes
6702 * current request. Nothing to do.
6703 */
6704 return 0;
6705 } else {
6706 curr_aen.members.locale |= prev_aen.members.locale;
6707
6708 if (prev_aen.members.class < curr_aen.members.class)
6709 curr_aen.members.class = prev_aen.members.class;
6710
6711 instance->aen_cmd->abort_aen = 1;
6712 ret_val = megasas_issue_blocked_abort_cmd(instance,
6713 instance->
6714 aen_cmd, 30);
6715
6716 if (ret_val) {
6717 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to abort "
6718 "previous AEN command\n");
6719 return ret_val;
6720 }
6721 }
6722 }
6723
6724 cmd = megasas_get_cmd(instance);
6725
6726 if (!cmd)
6727 return -ENOMEM;
6728
6729 dcmd = &cmd->frame->dcmd;
6730
6731 memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail));
6732
6733 /*
6734 * Prepare DCMD for aen registration
6735 */
6736 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6737
6738 dcmd->cmd = MFI_CMD_DCMD;
6739 dcmd->cmd_status = 0x0;
6740 dcmd->sge_count = 1;
6741 dcmd->flags = MFI_FRAME_DIR_READ;
6742 dcmd->timeout = 0;
6743 dcmd->pad_0 = 0;
6744 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail));
6745 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT);
6746 dcmd->mbox.w[0] = cpu_to_le32(seq_num);
6747 instance->last_seq_num = seq_num;
6748 dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word);
6749
6750 megasas_set_dma_settings(instance, dcmd, instance->evt_detail_h,
6751 sizeof(struct megasas_evt_detail));
6752
6753 if (instance->aen_cmd != NULL) {
6754 megasas_return_cmd(instance, cmd);
6755 return 0;
6756 }
6757
6758 /*
6759 * Store reference to the cmd used to register for AEN. When an
6760 * application wants us to register for AEN, we have to abort this
6761 * cmd and re-register with a new EVENT LOCALE supplied by that app
6762 */
6763 instance->aen_cmd = cmd;
6764
6765 /*
6766 * Issue the aen registration frame
6767 */
6768 instance->instancet->issue_dcmd(instance, cmd);
6769
6770 return 0;
6771 }
6772
6773 /* megasas_get_target_prop - Send DCMD with below details to firmware.
6774 *
6775 * This DCMD will fetch few properties of LD/system PD defined
6776 * in MR_TARGET_DEV_PROPERTIES. eg. Queue Depth, MDTS value.
6777 *
6778 * DCMD send by drivers whenever new target is added to the OS.
6779 *
6780 * dcmd.opcode - MR_DCMD_DEV_GET_TARGET_PROP
6781 * dcmd.mbox.b[0] - DCMD is to be fired for LD or system PD.
6782 * 0 = system PD, 1 = LD.
6783 * dcmd.mbox.s[1] - TargetID for LD/system PD.
6784 * dcmd.sge IN - Pointer to return MR_TARGET_DEV_PROPERTIES.
6785 *
6786 * @instance: Adapter soft state
6787 * @sdev: OS provided scsi device
6788 *
6789 * Returns 0 on success non-zero on failure.
6790 */
6791 int
megasas_get_target_prop(struct megasas_instance * instance,struct scsi_device * sdev)6792 megasas_get_target_prop(struct megasas_instance *instance,
6793 struct scsi_device *sdev)
6794 {
6795 int ret;
6796 struct megasas_cmd *cmd;
6797 struct megasas_dcmd_frame *dcmd;
6798 u16 targetId = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL) +
6799 sdev->id;
6800
6801 cmd = megasas_get_cmd(instance);
6802
6803 if (!cmd) {
6804 dev_err(&instance->pdev->dev,
6805 "Failed to get cmd %s\n", __func__);
6806 return -ENOMEM;
6807 }
6808
6809 dcmd = &cmd->frame->dcmd;
6810
6811 memset(instance->tgt_prop, 0, sizeof(*instance->tgt_prop));
6812 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6813 dcmd->mbox.b[0] = MEGASAS_IS_LOGICAL(sdev);
6814
6815 dcmd->mbox.s[1] = cpu_to_le16(targetId);
6816 dcmd->cmd = MFI_CMD_DCMD;
6817 dcmd->cmd_status = 0xFF;
6818 dcmd->sge_count = 1;
6819 dcmd->flags = MFI_FRAME_DIR_READ;
6820 dcmd->timeout = 0;
6821 dcmd->pad_0 = 0;
6822 dcmd->data_xfer_len =
6823 cpu_to_le32(sizeof(struct MR_TARGET_PROPERTIES));
6824 dcmd->opcode = cpu_to_le32(MR_DCMD_DRV_GET_TARGET_PROP);
6825
6826 megasas_set_dma_settings(instance, dcmd, instance->tgt_prop_h,
6827 sizeof(struct MR_TARGET_PROPERTIES));
6828
6829 if ((instance->adapter_type != MFI_SERIES) &&
6830 !instance->mask_interrupts)
6831 ret = megasas_issue_blocked_cmd(instance,
6832 cmd, MFI_IO_TIMEOUT_SECS);
6833 else
6834 ret = megasas_issue_polled(instance, cmd);
6835
6836 switch (ret) {
6837 case DCMD_TIMEOUT:
6838 switch (dcmd_timeout_ocr_possible(instance)) {
6839 case INITIATE_OCR:
6840 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
6841 mutex_unlock(&instance->reset_mutex);
6842 megasas_reset_fusion(instance->host,
6843 MFI_IO_TIMEOUT_OCR);
6844 mutex_lock(&instance->reset_mutex);
6845 break;
6846 case KILL_ADAPTER:
6847 megaraid_sas_kill_hba(instance);
6848 break;
6849 case IGNORE_TIMEOUT:
6850 dev_info(&instance->pdev->dev,
6851 "Ignore DCMD timeout: %s %d\n",
6852 __func__, __LINE__);
6853 break;
6854 }
6855 break;
6856
6857 default:
6858 megasas_return_cmd(instance, cmd);
6859 }
6860 if (ret != DCMD_SUCCESS)
6861 dev_err(&instance->pdev->dev,
6862 "return from %s %d return value %d\n",
6863 __func__, __LINE__, ret);
6864
6865 return ret;
6866 }
6867
6868 /**
6869 * megasas_start_aen - Subscribes to AEN during driver load time
6870 * @instance: Adapter soft state
6871 */
megasas_start_aen(struct megasas_instance * instance)6872 static int megasas_start_aen(struct megasas_instance *instance)
6873 {
6874 struct megasas_evt_log_info eli;
6875 union megasas_evt_class_locale class_locale;
6876
6877 /*
6878 * Get the latest sequence number from FW
6879 */
6880 memset(&eli, 0, sizeof(eli));
6881
6882 if (megasas_get_seq_num(instance, &eli))
6883 return -1;
6884
6885 /*
6886 * Register AEN with FW for latest sequence number plus 1
6887 */
6888 class_locale.members.reserved = 0;
6889 class_locale.members.locale = MR_EVT_LOCALE_ALL;
6890 class_locale.members.class = MR_EVT_CLASS_DEBUG;
6891
6892 return megasas_register_aen(instance,
6893 le32_to_cpu(eli.newest_seq_num) + 1,
6894 class_locale.word);
6895 }
6896
6897 /**
6898 * megasas_io_attach - Attaches this driver to SCSI mid-layer
6899 * @instance: Adapter soft state
6900 */
megasas_io_attach(struct megasas_instance * instance)6901 static int megasas_io_attach(struct megasas_instance *instance)
6902 {
6903 struct Scsi_Host *host = instance->host;
6904
6905 /*
6906 * Export parameters required by SCSI mid-layer
6907 */
6908 host->unique_id = instance->unique_id;
6909 host->can_queue = instance->max_scsi_cmds;
6910 host->this_id = instance->init_id;
6911 host->sg_tablesize = instance->max_num_sge;
6912
6913 if (instance->fw_support_ieee)
6914 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE;
6915
6916 /*
6917 * Check if the module parameter value for max_sectors can be used
6918 */
6919 if (max_sectors && max_sectors < instance->max_sectors_per_req)
6920 instance->max_sectors_per_req = max_sectors;
6921 else {
6922 if (max_sectors) {
6923 if (((instance->pdev->device ==
6924 PCI_DEVICE_ID_LSI_SAS1078GEN2) ||
6925 (instance->pdev->device ==
6926 PCI_DEVICE_ID_LSI_SAS0079GEN2)) &&
6927 (max_sectors <= MEGASAS_MAX_SECTORS)) {
6928 instance->max_sectors_per_req = max_sectors;
6929 } else {
6930 dev_info(&instance->pdev->dev, "max_sectors should be > 0"
6931 "and <= %d (or < 1MB for GEN2 controller)\n",
6932 instance->max_sectors_per_req);
6933 }
6934 }
6935 }
6936
6937 host->max_sectors = instance->max_sectors_per_req;
6938 host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN;
6939 host->max_channel = MEGASAS_MAX_CHANNELS - 1;
6940 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL;
6941 host->max_lun = MEGASAS_MAX_LUN;
6942 host->max_cmd_len = 16;
6943
6944 /* Use shared host tagset only for fusion adaptors
6945 * if there are managed interrupts (smp affinity enabled case).
6946 * Single msix_vectors in kdump, so shared host tag is also disabled.
6947 */
6948
6949 host->host_tagset = 0;
6950 host->nr_hw_queues = 1;
6951
6952 if ((instance->adapter_type != MFI_SERIES) &&
6953 (instance->msix_vectors > instance->low_latency_index_start) &&
6954 host_tagset_enable &&
6955 instance->smp_affinity_enable) {
6956 host->host_tagset = 1;
6957 host->nr_hw_queues = instance->msix_vectors -
6958 instance->low_latency_index_start + instance->iopoll_q_count;
6959 if (instance->iopoll_q_count)
6960 host->nr_maps = 3;
6961 } else {
6962 instance->iopoll_q_count = 0;
6963 }
6964
6965 dev_info(&instance->pdev->dev,
6966 "Max firmware commands: %d shared with default "
6967 "hw_queues = %d poll_queues %d\n", instance->max_fw_cmds,
6968 host->nr_hw_queues - instance->iopoll_q_count,
6969 instance->iopoll_q_count);
6970 /*
6971 * Notify the mid-layer about the new controller
6972 */
6973 if (scsi_add_host(host, &instance->pdev->dev)) {
6974 dev_err(&instance->pdev->dev,
6975 "Failed to add host from %s %d\n",
6976 __func__, __LINE__);
6977 return -ENODEV;
6978 }
6979
6980 return 0;
6981 }
6982
6983 /**
6984 * megasas_set_dma_mask - Set DMA mask for supported controllers
6985 *
6986 * @instance: Adapter soft state
6987 * Description:
6988 *
6989 * For Ventura, driver/FW will operate in 63bit DMA addresses.
6990 *
6991 * For invader-
6992 * By default, driver/FW will operate in 32bit DMA addresses
6993 * for consistent DMA mapping but if 32 bit consistent
6994 * DMA mask fails, driver will try with 63 bit consistent
6995 * mask provided FW is true 63bit DMA capable
6996 *
6997 * For older controllers(Thunderbolt and MFI based adapters)-
6998 * driver/FW will operate in 32 bit consistent DMA addresses.
6999 */
7000 static int
megasas_set_dma_mask(struct megasas_instance * instance)7001 megasas_set_dma_mask(struct megasas_instance *instance)
7002 {
7003 u64 consistent_mask;
7004 struct pci_dev *pdev;
7005 u32 scratch_pad_1;
7006
7007 pdev = instance->pdev;
7008 consistent_mask = (instance->adapter_type >= VENTURA_SERIES) ?
7009 DMA_BIT_MASK(63) : DMA_BIT_MASK(32);
7010
7011 if (IS_DMA64) {
7012 if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(63)) &&
7013 dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
7014 goto fail_set_dma_mask;
7015
7016 if ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) &&
7017 (dma_set_coherent_mask(&pdev->dev, consistent_mask) &&
7018 dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))) {
7019 /*
7020 * If 32 bit DMA mask fails, then try for 64 bit mask
7021 * for FW capable of handling 64 bit DMA.
7022 */
7023 scratch_pad_1 = megasas_readl
7024 (instance, &instance->reg_set->outbound_scratch_pad_1);
7025
7026 if (!(scratch_pad_1 & MR_CAN_HANDLE_64_BIT_DMA_OFFSET))
7027 goto fail_set_dma_mask;
7028 else if (dma_set_mask_and_coherent(&pdev->dev,
7029 DMA_BIT_MASK(63)))
7030 goto fail_set_dma_mask;
7031 }
7032 } else if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
7033 goto fail_set_dma_mask;
7034
7035 if (pdev->dev.coherent_dma_mask == DMA_BIT_MASK(32))
7036 instance->consistent_mask_64bit = false;
7037 else
7038 instance->consistent_mask_64bit = true;
7039
7040 dev_info(&pdev->dev, "%s bit DMA mask and %s bit consistent mask\n",
7041 ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) ? "63" : "32"),
7042 (instance->consistent_mask_64bit ? "63" : "32"));
7043
7044 return 0;
7045
7046 fail_set_dma_mask:
7047 dev_err(&pdev->dev, "Failed to set DMA mask\n");
7048 return -1;
7049
7050 }
7051
7052 /*
7053 * megasas_set_adapter_type - Set adapter type.
7054 * Supported controllers can be divided in
7055 * different categories-
7056 * enum MR_ADAPTER_TYPE {
7057 * MFI_SERIES = 1,
7058 * THUNDERBOLT_SERIES = 2,
7059 * INVADER_SERIES = 3,
7060 * VENTURA_SERIES = 4,
7061 * AERO_SERIES = 5,
7062 * };
7063 * @instance: Adapter soft state
7064 * return: void
7065 */
megasas_set_adapter_type(struct megasas_instance * instance)7066 static inline void megasas_set_adapter_type(struct megasas_instance *instance)
7067 {
7068 if ((instance->pdev->vendor == PCI_VENDOR_ID_DELL) &&
7069 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5)) {
7070 instance->adapter_type = MFI_SERIES;
7071 } else {
7072 switch (instance->pdev->device) {
7073 case PCI_DEVICE_ID_LSI_AERO_10E1:
7074 case PCI_DEVICE_ID_LSI_AERO_10E2:
7075 case PCI_DEVICE_ID_LSI_AERO_10E5:
7076 case PCI_DEVICE_ID_LSI_AERO_10E6:
7077 instance->adapter_type = AERO_SERIES;
7078 break;
7079 case PCI_DEVICE_ID_LSI_VENTURA:
7080 case PCI_DEVICE_ID_LSI_CRUSADER:
7081 case PCI_DEVICE_ID_LSI_HARPOON:
7082 case PCI_DEVICE_ID_LSI_TOMCAT:
7083 case PCI_DEVICE_ID_LSI_VENTURA_4PORT:
7084 case PCI_DEVICE_ID_LSI_CRUSADER_4PORT:
7085 instance->adapter_type = VENTURA_SERIES;
7086 break;
7087 case PCI_DEVICE_ID_LSI_FUSION:
7088 case PCI_DEVICE_ID_LSI_PLASMA:
7089 instance->adapter_type = THUNDERBOLT_SERIES;
7090 break;
7091 case PCI_DEVICE_ID_LSI_INVADER:
7092 case PCI_DEVICE_ID_LSI_INTRUDER:
7093 case PCI_DEVICE_ID_LSI_INTRUDER_24:
7094 case PCI_DEVICE_ID_LSI_CUTLASS_52:
7095 case PCI_DEVICE_ID_LSI_CUTLASS_53:
7096 case PCI_DEVICE_ID_LSI_FURY:
7097 instance->adapter_type = INVADER_SERIES;
7098 break;
7099 default: /* For all other supported controllers */
7100 instance->adapter_type = MFI_SERIES;
7101 break;
7102 }
7103 }
7104 }
7105
megasas_alloc_mfi_ctrl_mem(struct megasas_instance * instance)7106 static inline int megasas_alloc_mfi_ctrl_mem(struct megasas_instance *instance)
7107 {
7108 instance->producer = dma_alloc_coherent(&instance->pdev->dev,
7109 sizeof(u32), &instance->producer_h, GFP_KERNEL);
7110 instance->consumer = dma_alloc_coherent(&instance->pdev->dev,
7111 sizeof(u32), &instance->consumer_h, GFP_KERNEL);
7112
7113 if (!instance->producer || !instance->consumer) {
7114 dev_err(&instance->pdev->dev,
7115 "Failed to allocate memory for producer, consumer\n");
7116 return -1;
7117 }
7118
7119 *instance->producer = 0;
7120 *instance->consumer = 0;
7121 return 0;
7122 }
7123
7124 /**
7125 * megasas_alloc_ctrl_mem - Allocate per controller memory for core data
7126 * structures which are not common across MFI
7127 * adapters and fusion adapters.
7128 * For MFI based adapters, allocate producer and
7129 * consumer buffers. For fusion adapters, allocate
7130 * memory for fusion context.
7131 * @instance: Adapter soft state
7132 * return: 0 for SUCCESS
7133 */
megasas_alloc_ctrl_mem(struct megasas_instance * instance)7134 static int megasas_alloc_ctrl_mem(struct megasas_instance *instance)
7135 {
7136 instance->reply_map = kcalloc(nr_cpu_ids, sizeof(unsigned int),
7137 GFP_KERNEL);
7138 if (!instance->reply_map)
7139 return -ENOMEM;
7140
7141 switch (instance->adapter_type) {
7142 case MFI_SERIES:
7143 if (megasas_alloc_mfi_ctrl_mem(instance))
7144 return -ENOMEM;
7145 break;
7146 case AERO_SERIES:
7147 case VENTURA_SERIES:
7148 case THUNDERBOLT_SERIES:
7149 case INVADER_SERIES:
7150 if (megasas_alloc_fusion_context(instance))
7151 return -ENOMEM;
7152 break;
7153 }
7154
7155 return 0;
7156 }
7157
7158 /*
7159 * megasas_free_ctrl_mem - Free fusion context for fusion adapters and
7160 * producer, consumer buffers for MFI adapters
7161 *
7162 * @instance - Adapter soft instance
7163 *
7164 */
megasas_free_ctrl_mem(struct megasas_instance * instance)7165 static inline void megasas_free_ctrl_mem(struct megasas_instance *instance)
7166 {
7167 kfree(instance->reply_map);
7168 if (instance->adapter_type == MFI_SERIES) {
7169 if (instance->producer)
7170 dma_free_coherent(&instance->pdev->dev, sizeof(u32),
7171 instance->producer,
7172 instance->producer_h);
7173 if (instance->consumer)
7174 dma_free_coherent(&instance->pdev->dev, sizeof(u32),
7175 instance->consumer,
7176 instance->consumer_h);
7177 } else {
7178 megasas_free_fusion_context(instance);
7179 }
7180 }
7181
7182 /**
7183 * megasas_alloc_ctrl_dma_buffers - Allocate consistent DMA buffers during
7184 * driver load time
7185 *
7186 * @instance: Adapter soft instance
7187 *
7188 * @return: O for SUCCESS
7189 */
7190 static inline
megasas_alloc_ctrl_dma_buffers(struct megasas_instance * instance)7191 int megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance)
7192 {
7193 struct pci_dev *pdev = instance->pdev;
7194 struct fusion_context *fusion = instance->ctrl_context;
7195
7196 instance->evt_detail = dma_alloc_coherent(&pdev->dev,
7197 sizeof(struct megasas_evt_detail),
7198 &instance->evt_detail_h, GFP_KERNEL);
7199
7200 if (!instance->evt_detail) {
7201 dev_err(&instance->pdev->dev,
7202 "Failed to allocate event detail buffer\n");
7203 return -ENOMEM;
7204 }
7205
7206 if (fusion) {
7207 fusion->ioc_init_request =
7208 dma_alloc_coherent(&pdev->dev,
7209 sizeof(struct MPI2_IOC_INIT_REQUEST),
7210 &fusion->ioc_init_request_phys,
7211 GFP_KERNEL);
7212
7213 if (!fusion->ioc_init_request) {
7214 dev_err(&pdev->dev,
7215 "Failed to allocate ioc init request\n");
7216 return -ENOMEM;
7217 }
7218
7219 instance->snapdump_prop = dma_alloc_coherent(&pdev->dev,
7220 sizeof(struct MR_SNAPDUMP_PROPERTIES),
7221 &instance->snapdump_prop_h, GFP_KERNEL);
7222
7223 if (!instance->snapdump_prop)
7224 dev_err(&pdev->dev,
7225 "Failed to allocate snapdump properties buffer\n");
7226
7227 instance->host_device_list_buf = dma_alloc_coherent(&pdev->dev,
7228 HOST_DEVICE_LIST_SZ,
7229 &instance->host_device_list_buf_h,
7230 GFP_KERNEL);
7231
7232 if (!instance->host_device_list_buf) {
7233 dev_err(&pdev->dev,
7234 "Failed to allocate targetid list buffer\n");
7235 return -ENOMEM;
7236 }
7237
7238 }
7239
7240 instance->pd_list_buf =
7241 dma_alloc_coherent(&pdev->dev,
7242 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
7243 &instance->pd_list_buf_h, GFP_KERNEL);
7244
7245 if (!instance->pd_list_buf) {
7246 dev_err(&pdev->dev, "Failed to allocate PD list buffer\n");
7247 return -ENOMEM;
7248 }
7249
7250 instance->ctrl_info_buf =
7251 dma_alloc_coherent(&pdev->dev,
7252 sizeof(struct megasas_ctrl_info),
7253 &instance->ctrl_info_buf_h, GFP_KERNEL);
7254
7255 if (!instance->ctrl_info_buf) {
7256 dev_err(&pdev->dev,
7257 "Failed to allocate controller info buffer\n");
7258 return -ENOMEM;
7259 }
7260
7261 instance->ld_list_buf =
7262 dma_alloc_coherent(&pdev->dev,
7263 sizeof(struct MR_LD_LIST),
7264 &instance->ld_list_buf_h, GFP_KERNEL);
7265
7266 if (!instance->ld_list_buf) {
7267 dev_err(&pdev->dev, "Failed to allocate LD list buffer\n");
7268 return -ENOMEM;
7269 }
7270
7271 instance->ld_targetid_list_buf =
7272 dma_alloc_coherent(&pdev->dev,
7273 sizeof(struct MR_LD_TARGETID_LIST),
7274 &instance->ld_targetid_list_buf_h, GFP_KERNEL);
7275
7276 if (!instance->ld_targetid_list_buf) {
7277 dev_err(&pdev->dev,
7278 "Failed to allocate LD targetid list buffer\n");
7279 return -ENOMEM;
7280 }
7281
7282 if (!reset_devices) {
7283 instance->system_info_buf =
7284 dma_alloc_coherent(&pdev->dev,
7285 sizeof(struct MR_DRV_SYSTEM_INFO),
7286 &instance->system_info_h, GFP_KERNEL);
7287 instance->pd_info =
7288 dma_alloc_coherent(&pdev->dev,
7289 sizeof(struct MR_PD_INFO),
7290 &instance->pd_info_h, GFP_KERNEL);
7291 instance->tgt_prop =
7292 dma_alloc_coherent(&pdev->dev,
7293 sizeof(struct MR_TARGET_PROPERTIES),
7294 &instance->tgt_prop_h, GFP_KERNEL);
7295 instance->crash_dump_buf =
7296 dma_alloc_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE,
7297 &instance->crash_dump_h, GFP_KERNEL);
7298
7299 if (!instance->system_info_buf)
7300 dev_err(&instance->pdev->dev,
7301 "Failed to allocate system info buffer\n");
7302
7303 if (!instance->pd_info)
7304 dev_err(&instance->pdev->dev,
7305 "Failed to allocate pd_info buffer\n");
7306
7307 if (!instance->tgt_prop)
7308 dev_err(&instance->pdev->dev,
7309 "Failed to allocate tgt_prop buffer\n");
7310
7311 if (!instance->crash_dump_buf)
7312 dev_err(&instance->pdev->dev,
7313 "Failed to allocate crash dump buffer\n");
7314 }
7315
7316 return 0;
7317 }
7318
7319 /*
7320 * megasas_free_ctrl_dma_buffers - Free consistent DMA buffers allocated
7321 * during driver load time
7322 *
7323 * @instance- Adapter soft instance
7324 *
7325 */
7326 static inline
megasas_free_ctrl_dma_buffers(struct megasas_instance * instance)7327 void megasas_free_ctrl_dma_buffers(struct megasas_instance *instance)
7328 {
7329 struct pci_dev *pdev = instance->pdev;
7330 struct fusion_context *fusion = instance->ctrl_context;
7331
7332 if (instance->evt_detail)
7333 dma_free_coherent(&pdev->dev, sizeof(struct megasas_evt_detail),
7334 instance->evt_detail,
7335 instance->evt_detail_h);
7336
7337 if (fusion && fusion->ioc_init_request)
7338 dma_free_coherent(&pdev->dev,
7339 sizeof(struct MPI2_IOC_INIT_REQUEST),
7340 fusion->ioc_init_request,
7341 fusion->ioc_init_request_phys);
7342
7343 if (instance->pd_list_buf)
7344 dma_free_coherent(&pdev->dev,
7345 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
7346 instance->pd_list_buf,
7347 instance->pd_list_buf_h);
7348
7349 if (instance->ld_list_buf)
7350 dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_LIST),
7351 instance->ld_list_buf,
7352 instance->ld_list_buf_h);
7353
7354 if (instance->ld_targetid_list_buf)
7355 dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_TARGETID_LIST),
7356 instance->ld_targetid_list_buf,
7357 instance->ld_targetid_list_buf_h);
7358
7359 if (instance->ctrl_info_buf)
7360 dma_free_coherent(&pdev->dev, sizeof(struct megasas_ctrl_info),
7361 instance->ctrl_info_buf,
7362 instance->ctrl_info_buf_h);
7363
7364 if (instance->system_info_buf)
7365 dma_free_coherent(&pdev->dev, sizeof(struct MR_DRV_SYSTEM_INFO),
7366 instance->system_info_buf,
7367 instance->system_info_h);
7368
7369 if (instance->pd_info)
7370 dma_free_coherent(&pdev->dev, sizeof(struct MR_PD_INFO),
7371 instance->pd_info, instance->pd_info_h);
7372
7373 if (instance->tgt_prop)
7374 dma_free_coherent(&pdev->dev, sizeof(struct MR_TARGET_PROPERTIES),
7375 instance->tgt_prop, instance->tgt_prop_h);
7376
7377 if (instance->crash_dump_buf)
7378 dma_free_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE,
7379 instance->crash_dump_buf,
7380 instance->crash_dump_h);
7381
7382 if (instance->snapdump_prop)
7383 dma_free_coherent(&pdev->dev,
7384 sizeof(struct MR_SNAPDUMP_PROPERTIES),
7385 instance->snapdump_prop,
7386 instance->snapdump_prop_h);
7387
7388 if (instance->host_device_list_buf)
7389 dma_free_coherent(&pdev->dev,
7390 HOST_DEVICE_LIST_SZ,
7391 instance->host_device_list_buf,
7392 instance->host_device_list_buf_h);
7393
7394 }
7395
7396 /*
7397 * megasas_init_ctrl_params - Initialize controller's instance
7398 * parameters before FW init
7399 * @instance - Adapter soft instance
7400 * @return - void
7401 */
megasas_init_ctrl_params(struct megasas_instance * instance)7402 static inline void megasas_init_ctrl_params(struct megasas_instance *instance)
7403 {
7404 instance->fw_crash_state = UNAVAILABLE;
7405
7406 megasas_poll_wait_aen = 0;
7407 instance->issuepend_done = 1;
7408 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
7409
7410 /*
7411 * Initialize locks and queues
7412 */
7413 INIT_LIST_HEAD(&instance->cmd_pool);
7414 INIT_LIST_HEAD(&instance->internal_reset_pending_q);
7415
7416 atomic_set(&instance->fw_outstanding, 0);
7417 atomic64_set(&instance->total_io_count, 0);
7418
7419 init_waitqueue_head(&instance->int_cmd_wait_q);
7420 init_waitqueue_head(&instance->abort_cmd_wait_q);
7421
7422 mutex_init(&instance->crashdump_lock);
7423 spin_lock_init(&instance->mfi_pool_lock);
7424 spin_lock_init(&instance->hba_lock);
7425 spin_lock_init(&instance->stream_lock);
7426 spin_lock_init(&instance->completion_lock);
7427
7428 mutex_init(&instance->reset_mutex);
7429
7430 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
7431 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY))
7432 instance->flag_ieee = 1;
7433
7434 instance->flag = 0;
7435 instance->unload = 1;
7436 instance->last_time = 0;
7437 instance->disableOnlineCtrlReset = 1;
7438 instance->UnevenSpanSupport = 0;
7439 instance->smp_affinity_enable = smp_affinity_enable ? true : false;
7440 instance->msix_load_balance = false;
7441
7442 if (instance->adapter_type != MFI_SERIES)
7443 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq);
7444 else
7445 INIT_WORK(&instance->work_init, process_fw_state_change_wq);
7446 }
7447
7448 /**
7449 * megasas_probe_one - PCI hotplug entry point
7450 * @pdev: PCI device structure
7451 * @id: PCI ids of supported hotplugged adapter
7452 */
megasas_probe_one(struct pci_dev * pdev,const struct pci_device_id * id)7453 static int megasas_probe_one(struct pci_dev *pdev,
7454 const struct pci_device_id *id)
7455 {
7456 int rval, pos;
7457 struct Scsi_Host *host;
7458 struct megasas_instance *instance;
7459 u16 control = 0;
7460
7461 switch (pdev->device) {
7462 case PCI_DEVICE_ID_LSI_AERO_10E0:
7463 case PCI_DEVICE_ID_LSI_AERO_10E3:
7464 case PCI_DEVICE_ID_LSI_AERO_10E4:
7465 case PCI_DEVICE_ID_LSI_AERO_10E7:
7466 dev_err(&pdev->dev, "Adapter is in non secure mode\n");
7467 return 1;
7468 case PCI_DEVICE_ID_LSI_AERO_10E1:
7469 case PCI_DEVICE_ID_LSI_AERO_10E5:
7470 dev_info(&pdev->dev, "Adapter is in configurable secure mode\n");
7471 break;
7472 }
7473
7474 /* Reset MSI-X in the kdump kernel */
7475 if (reset_devices) {
7476 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
7477 if (pos) {
7478 pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS,
7479 &control);
7480 if (control & PCI_MSIX_FLAGS_ENABLE) {
7481 dev_info(&pdev->dev, "resetting MSI-X\n");
7482 pci_write_config_word(pdev,
7483 pos + PCI_MSIX_FLAGS,
7484 control &
7485 ~PCI_MSIX_FLAGS_ENABLE);
7486 }
7487 }
7488 }
7489
7490 /*
7491 * PCI prepping: enable device set bus mastering and dma mask
7492 */
7493 rval = pci_enable_device_mem(pdev);
7494
7495 if (rval) {
7496 return rval;
7497 }
7498
7499 pci_set_master(pdev);
7500
7501 host = scsi_host_alloc(&megasas_template,
7502 sizeof(struct megasas_instance));
7503
7504 if (!host) {
7505 dev_printk(KERN_DEBUG, &pdev->dev, "scsi_host_alloc failed\n");
7506 goto fail_alloc_instance;
7507 }
7508
7509 instance = (struct megasas_instance *)host->hostdata;
7510 memset(instance, 0, sizeof(*instance));
7511 atomic_set(&instance->fw_reset_no_pci_access, 0);
7512
7513 /*
7514 * Initialize PCI related and misc parameters
7515 */
7516 instance->pdev = pdev;
7517 instance->host = host;
7518 instance->unique_id = pci_dev_id(pdev);
7519 instance->init_id = MEGASAS_DEFAULT_INIT_ID;
7520
7521 megasas_set_adapter_type(instance);
7522
7523 /*
7524 * Initialize MFI Firmware
7525 */
7526 if (megasas_init_fw(instance))
7527 goto fail_init_mfi;
7528
7529 if (instance->requestorId) {
7530 if (instance->PlasmaFW111) {
7531 instance->vf_affiliation_111 =
7532 dma_alloc_coherent(&pdev->dev,
7533 sizeof(struct MR_LD_VF_AFFILIATION_111),
7534 &instance->vf_affiliation_111_h,
7535 GFP_KERNEL);
7536 if (!instance->vf_affiliation_111)
7537 dev_warn(&pdev->dev, "Can't allocate "
7538 "memory for VF affiliation buffer\n");
7539 } else {
7540 instance->vf_affiliation =
7541 dma_alloc_coherent(&pdev->dev,
7542 (MAX_LOGICAL_DRIVES + 1) *
7543 sizeof(struct MR_LD_VF_AFFILIATION),
7544 &instance->vf_affiliation_h,
7545 GFP_KERNEL);
7546 if (!instance->vf_affiliation)
7547 dev_warn(&pdev->dev, "Can't allocate "
7548 "memory for VF affiliation buffer\n");
7549 }
7550 }
7551
7552 /*
7553 * Store instance in PCI softstate
7554 */
7555 pci_set_drvdata(pdev, instance);
7556
7557 /*
7558 * Add this controller to megasas_mgmt_info structure so that it
7559 * can be exported to management applications
7560 */
7561 megasas_mgmt_info.count++;
7562 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance;
7563 megasas_mgmt_info.max_index++;
7564
7565 /*
7566 * Register with SCSI mid-layer
7567 */
7568 if (megasas_io_attach(instance))
7569 goto fail_io_attach;
7570
7571 instance->unload = 0;
7572 /*
7573 * Trigger SCSI to scan our drives
7574 */
7575 if (!instance->enable_fw_dev_list ||
7576 (instance->host_device_list_buf->count > 0))
7577 scsi_scan_host(host);
7578
7579 /*
7580 * Initiate AEN (Asynchronous Event Notification)
7581 */
7582 if (megasas_start_aen(instance)) {
7583 dev_printk(KERN_DEBUG, &pdev->dev, "start aen failed\n");
7584 goto fail_start_aen;
7585 }
7586
7587 megasas_setup_debugfs(instance);
7588
7589 /* Get current SR-IOV LD/VF affiliation */
7590 if (instance->requestorId)
7591 megasas_get_ld_vf_affiliation(instance, 1);
7592
7593 return 0;
7594
7595 fail_start_aen:
7596 instance->unload = 1;
7597 scsi_remove_host(instance->host);
7598 fail_io_attach:
7599 megasas_mgmt_info.count--;
7600 megasas_mgmt_info.max_index--;
7601 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL;
7602
7603 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7604 del_timer_sync(&instance->sriov_heartbeat_timer);
7605
7606 instance->instancet->disable_intr(instance);
7607 megasas_destroy_irqs(instance);
7608
7609 if (instance->adapter_type != MFI_SERIES)
7610 megasas_release_fusion(instance);
7611 else
7612 megasas_release_mfi(instance);
7613
7614 if (instance->msix_vectors)
7615 pci_free_irq_vectors(instance->pdev);
7616 instance->msix_vectors = 0;
7617
7618 if (instance->fw_crash_state != UNAVAILABLE)
7619 megasas_free_host_crash_buffer(instance);
7620
7621 if (instance->adapter_type != MFI_SERIES)
7622 megasas_fusion_stop_watchdog(instance);
7623 fail_init_mfi:
7624 scsi_host_put(host);
7625 fail_alloc_instance:
7626 pci_disable_device(pdev);
7627
7628 return -ENODEV;
7629 }
7630
7631 /**
7632 * megasas_flush_cache - Requests FW to flush all its caches
7633 * @instance: Adapter soft state
7634 */
megasas_flush_cache(struct megasas_instance * instance)7635 static void megasas_flush_cache(struct megasas_instance *instance)
7636 {
7637 struct megasas_cmd *cmd;
7638 struct megasas_dcmd_frame *dcmd;
7639
7640 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
7641 return;
7642
7643 cmd = megasas_get_cmd(instance);
7644
7645 if (!cmd)
7646 return;
7647
7648 dcmd = &cmd->frame->dcmd;
7649
7650 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
7651
7652 dcmd->cmd = MFI_CMD_DCMD;
7653 dcmd->cmd_status = 0x0;
7654 dcmd->sge_count = 0;
7655 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
7656 dcmd->timeout = 0;
7657 dcmd->pad_0 = 0;
7658 dcmd->data_xfer_len = 0;
7659 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH);
7660 dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE;
7661
7662 if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
7663 != DCMD_SUCCESS) {
7664 dev_err(&instance->pdev->dev,
7665 "return from %s %d\n", __func__, __LINE__);
7666 return;
7667 }
7668
7669 megasas_return_cmd(instance, cmd);
7670 }
7671
7672 /**
7673 * megasas_shutdown_controller - Instructs FW to shutdown the controller
7674 * @instance: Adapter soft state
7675 * @opcode: Shutdown/Hibernate
7676 */
megasas_shutdown_controller(struct megasas_instance * instance,u32 opcode)7677 static void megasas_shutdown_controller(struct megasas_instance *instance,
7678 u32 opcode)
7679 {
7680 struct megasas_cmd *cmd;
7681 struct megasas_dcmd_frame *dcmd;
7682
7683 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
7684 return;
7685
7686 cmd = megasas_get_cmd(instance);
7687
7688 if (!cmd)
7689 return;
7690
7691 if (instance->aen_cmd)
7692 megasas_issue_blocked_abort_cmd(instance,
7693 instance->aen_cmd, MFI_IO_TIMEOUT_SECS);
7694 if (instance->map_update_cmd)
7695 megasas_issue_blocked_abort_cmd(instance,
7696 instance->map_update_cmd, MFI_IO_TIMEOUT_SECS);
7697 if (instance->jbod_seq_cmd)
7698 megasas_issue_blocked_abort_cmd(instance,
7699 instance->jbod_seq_cmd, MFI_IO_TIMEOUT_SECS);
7700
7701 dcmd = &cmd->frame->dcmd;
7702
7703 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
7704
7705 dcmd->cmd = MFI_CMD_DCMD;
7706 dcmd->cmd_status = 0x0;
7707 dcmd->sge_count = 0;
7708 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
7709 dcmd->timeout = 0;
7710 dcmd->pad_0 = 0;
7711 dcmd->data_xfer_len = 0;
7712 dcmd->opcode = cpu_to_le32(opcode);
7713
7714 if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
7715 != DCMD_SUCCESS) {
7716 dev_err(&instance->pdev->dev,
7717 "return from %s %d\n", __func__, __LINE__);
7718 return;
7719 }
7720
7721 megasas_return_cmd(instance, cmd);
7722 }
7723
7724 /**
7725 * megasas_suspend - driver suspend entry point
7726 * @dev: Device structure
7727 */
7728 static int __maybe_unused
megasas_suspend(struct device * dev)7729 megasas_suspend(struct device *dev)
7730 {
7731 struct megasas_instance *instance;
7732
7733 instance = dev_get_drvdata(dev);
7734
7735 if (!instance)
7736 return 0;
7737
7738 instance->unload = 1;
7739
7740 dev_info(dev, "%s is called\n", __func__);
7741
7742 /* Shutdown SR-IOV heartbeat timer */
7743 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7744 del_timer_sync(&instance->sriov_heartbeat_timer);
7745
7746 /* Stop the FW fault detection watchdog */
7747 if (instance->adapter_type != MFI_SERIES)
7748 megasas_fusion_stop_watchdog(instance);
7749
7750 megasas_flush_cache(instance);
7751 megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN);
7752
7753 /* cancel the delayed work if this work still in queue */
7754 if (instance->ev != NULL) {
7755 struct megasas_aen_event *ev = instance->ev;
7756 cancel_delayed_work_sync(&ev->hotplug_work);
7757 instance->ev = NULL;
7758 }
7759
7760 tasklet_kill(&instance->isr_tasklet);
7761
7762 pci_set_drvdata(instance->pdev, instance);
7763 instance->instancet->disable_intr(instance);
7764
7765 megasas_destroy_irqs(instance);
7766
7767 if (instance->msix_vectors)
7768 pci_free_irq_vectors(instance->pdev);
7769
7770 return 0;
7771 }
7772
7773 /**
7774 * megasas_resume- driver resume entry point
7775 * @dev: Device structure
7776 */
7777 static int __maybe_unused
megasas_resume(struct device * dev)7778 megasas_resume(struct device *dev)
7779 {
7780 int rval;
7781 struct Scsi_Host *host;
7782 struct megasas_instance *instance;
7783 u32 status_reg;
7784
7785 instance = dev_get_drvdata(dev);
7786
7787 if (!instance)
7788 return 0;
7789
7790 host = instance->host;
7791
7792 dev_info(dev, "%s is called\n", __func__);
7793
7794 /*
7795 * We expect the FW state to be READY
7796 */
7797
7798 if (megasas_transition_to_ready(instance, 0)) {
7799 dev_info(&instance->pdev->dev,
7800 "Failed to transition controller to ready from %s!\n",
7801 __func__);
7802 if (instance->adapter_type != MFI_SERIES) {
7803 status_reg =
7804 instance->instancet->read_fw_status_reg(instance);
7805 if (!(status_reg & MFI_RESET_ADAPTER) ||
7806 ((megasas_adp_reset_wait_for_ready
7807 (instance, true, 0)) == FAILED))
7808 goto fail_ready_state;
7809 } else {
7810 atomic_set(&instance->fw_reset_no_pci_access, 1);
7811 instance->instancet->adp_reset
7812 (instance, instance->reg_set);
7813 atomic_set(&instance->fw_reset_no_pci_access, 0);
7814
7815 /* waiting for about 30 seconds before retry */
7816 ssleep(30);
7817
7818 if (megasas_transition_to_ready(instance, 0))
7819 goto fail_ready_state;
7820 }
7821
7822 dev_info(&instance->pdev->dev,
7823 "FW restarted successfully from %s!\n",
7824 __func__);
7825 }
7826 if (megasas_set_dma_mask(instance))
7827 goto fail_set_dma_mask;
7828
7829 /*
7830 * Initialize MFI Firmware
7831 */
7832
7833 atomic_set(&instance->fw_outstanding, 0);
7834 atomic_set(&instance->ldio_outstanding, 0);
7835
7836 /* Now re-enable MSI-X */
7837 if (instance->msix_vectors)
7838 megasas_alloc_irq_vectors(instance);
7839
7840 if (!instance->msix_vectors) {
7841 rval = pci_alloc_irq_vectors(instance->pdev, 1, 1,
7842 PCI_IRQ_LEGACY);
7843 if (rval < 0)
7844 goto fail_reenable_msix;
7845 }
7846
7847 megasas_setup_reply_map(instance);
7848
7849 if (instance->adapter_type != MFI_SERIES) {
7850 megasas_reset_reply_desc(instance);
7851 if (megasas_ioc_init_fusion(instance)) {
7852 megasas_free_cmds(instance);
7853 megasas_free_cmds_fusion(instance);
7854 goto fail_init_mfi;
7855 }
7856 if (!megasas_get_map_info(instance))
7857 megasas_sync_map_info(instance);
7858 } else {
7859 *instance->producer = 0;
7860 *instance->consumer = 0;
7861 if (megasas_issue_init_mfi(instance))
7862 goto fail_init_mfi;
7863 }
7864
7865 if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS)
7866 goto fail_init_mfi;
7867
7868 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
7869 (unsigned long)instance);
7870
7871 if (instance->msix_vectors ?
7872 megasas_setup_irqs_msix(instance, 0) :
7873 megasas_setup_irqs_ioapic(instance))
7874 goto fail_init_mfi;
7875
7876 if (instance->adapter_type != MFI_SERIES)
7877 megasas_setup_irq_poll(instance);
7878
7879 /* Re-launch SR-IOV heartbeat timer */
7880 if (instance->requestorId) {
7881 if (!megasas_sriov_start_heartbeat(instance, 0))
7882 megasas_start_timer(instance);
7883 else {
7884 instance->skip_heartbeat_timer_del = 1;
7885 goto fail_init_mfi;
7886 }
7887 }
7888
7889 instance->instancet->enable_intr(instance);
7890 megasas_setup_jbod_map(instance);
7891 instance->unload = 0;
7892
7893 /*
7894 * Initiate AEN (Asynchronous Event Notification)
7895 */
7896 if (megasas_start_aen(instance))
7897 dev_err(&instance->pdev->dev, "Start AEN failed\n");
7898
7899 /* Re-launch FW fault watchdog */
7900 if (instance->adapter_type != MFI_SERIES)
7901 if (megasas_fusion_start_watchdog(instance) != SUCCESS)
7902 goto fail_start_watchdog;
7903
7904 return 0;
7905
7906 fail_start_watchdog:
7907 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7908 del_timer_sync(&instance->sriov_heartbeat_timer);
7909 fail_init_mfi:
7910 megasas_free_ctrl_dma_buffers(instance);
7911 megasas_free_ctrl_mem(instance);
7912 scsi_host_put(host);
7913
7914 fail_reenable_msix:
7915 fail_set_dma_mask:
7916 fail_ready_state:
7917
7918 return -ENODEV;
7919 }
7920
7921 static inline int
megasas_wait_for_adapter_operational(struct megasas_instance * instance)7922 megasas_wait_for_adapter_operational(struct megasas_instance *instance)
7923 {
7924 int wait_time = MEGASAS_RESET_WAIT_TIME * 2;
7925 int i;
7926 u8 adp_state;
7927
7928 for (i = 0; i < wait_time; i++) {
7929 adp_state = atomic_read(&instance->adprecovery);
7930 if ((adp_state == MEGASAS_HBA_OPERATIONAL) ||
7931 (adp_state == MEGASAS_HW_CRITICAL_ERROR))
7932 break;
7933
7934 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL))
7935 dev_notice(&instance->pdev->dev, "waiting for controller reset to finish\n");
7936
7937 msleep(1000);
7938 }
7939
7940 if (adp_state != MEGASAS_HBA_OPERATIONAL) {
7941 dev_info(&instance->pdev->dev,
7942 "%s HBA failed to become operational, adp_state %d\n",
7943 __func__, adp_state);
7944 return 1;
7945 }
7946
7947 return 0;
7948 }
7949
7950 /**
7951 * megasas_detach_one - PCI hot"un"plug entry point
7952 * @pdev: PCI device structure
7953 */
megasas_detach_one(struct pci_dev * pdev)7954 static void megasas_detach_one(struct pci_dev *pdev)
7955 {
7956 int i;
7957 struct Scsi_Host *host;
7958 struct megasas_instance *instance;
7959 struct fusion_context *fusion;
7960 size_t pd_seq_map_sz;
7961
7962 instance = pci_get_drvdata(pdev);
7963
7964 if (!instance)
7965 return;
7966
7967 host = instance->host;
7968 fusion = instance->ctrl_context;
7969
7970 /* Shutdown SR-IOV heartbeat timer */
7971 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7972 del_timer_sync(&instance->sriov_heartbeat_timer);
7973
7974 /* Stop the FW fault detection watchdog */
7975 if (instance->adapter_type != MFI_SERIES)
7976 megasas_fusion_stop_watchdog(instance);
7977
7978 if (instance->fw_crash_state != UNAVAILABLE)
7979 megasas_free_host_crash_buffer(instance);
7980 scsi_remove_host(instance->host);
7981 instance->unload = 1;
7982
7983 if (megasas_wait_for_adapter_operational(instance))
7984 goto skip_firing_dcmds;
7985
7986 megasas_flush_cache(instance);
7987 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
7988
7989 skip_firing_dcmds:
7990 /* cancel the delayed work if this work still in queue*/
7991 if (instance->ev != NULL) {
7992 struct megasas_aen_event *ev = instance->ev;
7993 cancel_delayed_work_sync(&ev->hotplug_work);
7994 instance->ev = NULL;
7995 }
7996
7997 /* cancel all wait events */
7998 wake_up_all(&instance->int_cmd_wait_q);
7999
8000 tasklet_kill(&instance->isr_tasklet);
8001
8002 /*
8003 * Take the instance off the instance array. Note that we will not
8004 * decrement the max_index. We let this array be sparse array
8005 */
8006 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
8007 if (megasas_mgmt_info.instance[i] == instance) {
8008 megasas_mgmt_info.count--;
8009 megasas_mgmt_info.instance[i] = NULL;
8010
8011 break;
8012 }
8013 }
8014
8015 instance->instancet->disable_intr(instance);
8016
8017 megasas_destroy_irqs(instance);
8018
8019 if (instance->msix_vectors)
8020 pci_free_irq_vectors(instance->pdev);
8021
8022 if (instance->adapter_type >= VENTURA_SERIES) {
8023 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i)
8024 kfree(fusion->stream_detect_by_ld[i]);
8025 kfree(fusion->stream_detect_by_ld);
8026 fusion->stream_detect_by_ld = NULL;
8027 }
8028
8029
8030 if (instance->adapter_type != MFI_SERIES) {
8031 megasas_release_fusion(instance);
8032 pd_seq_map_sz =
8033 struct_size_t(struct MR_PD_CFG_SEQ_NUM_SYNC,
8034 seq, MAX_PHYSICAL_DEVICES);
8035 for (i = 0; i < 2 ; i++) {
8036 if (fusion->ld_map[i])
8037 dma_free_coherent(&instance->pdev->dev,
8038 fusion->max_map_sz,
8039 fusion->ld_map[i],
8040 fusion->ld_map_phys[i]);
8041 if (fusion->ld_drv_map[i]) {
8042 if (is_vmalloc_addr(fusion->ld_drv_map[i]))
8043 vfree(fusion->ld_drv_map[i]);
8044 else
8045 free_pages((ulong)fusion->ld_drv_map[i],
8046 fusion->drv_map_pages);
8047 }
8048
8049 if (fusion->pd_seq_sync[i])
8050 dma_free_coherent(&instance->pdev->dev,
8051 pd_seq_map_sz,
8052 fusion->pd_seq_sync[i],
8053 fusion->pd_seq_phys[i]);
8054 }
8055 } else {
8056 megasas_release_mfi(instance);
8057 }
8058
8059 if (instance->vf_affiliation)
8060 dma_free_coherent(&pdev->dev, (MAX_LOGICAL_DRIVES + 1) *
8061 sizeof(struct MR_LD_VF_AFFILIATION),
8062 instance->vf_affiliation,
8063 instance->vf_affiliation_h);
8064
8065 if (instance->vf_affiliation_111)
8066 dma_free_coherent(&pdev->dev,
8067 sizeof(struct MR_LD_VF_AFFILIATION_111),
8068 instance->vf_affiliation_111,
8069 instance->vf_affiliation_111_h);
8070
8071 if (instance->hb_host_mem)
8072 dma_free_coherent(&pdev->dev, sizeof(struct MR_CTRL_HB_HOST_MEM),
8073 instance->hb_host_mem,
8074 instance->hb_host_mem_h);
8075
8076 megasas_free_ctrl_dma_buffers(instance);
8077
8078 megasas_free_ctrl_mem(instance);
8079
8080 megasas_destroy_debugfs(instance);
8081
8082 scsi_host_put(host);
8083
8084 pci_disable_device(pdev);
8085 }
8086
8087 /**
8088 * megasas_shutdown - Shutdown entry point
8089 * @pdev: PCI device structure
8090 */
megasas_shutdown(struct pci_dev * pdev)8091 static void megasas_shutdown(struct pci_dev *pdev)
8092 {
8093 struct megasas_instance *instance = pci_get_drvdata(pdev);
8094
8095 if (!instance)
8096 return;
8097
8098 instance->unload = 1;
8099
8100 if (megasas_wait_for_adapter_operational(instance))
8101 goto skip_firing_dcmds;
8102
8103 megasas_flush_cache(instance);
8104 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
8105
8106 skip_firing_dcmds:
8107 instance->instancet->disable_intr(instance);
8108 megasas_destroy_irqs(instance);
8109
8110 if (instance->msix_vectors)
8111 pci_free_irq_vectors(instance->pdev);
8112 }
8113
8114 /*
8115 * megasas_mgmt_open - char node "open" entry point
8116 * @inode: char node inode
8117 * @filep: char node file
8118 */
megasas_mgmt_open(struct inode * inode,struct file * filep)8119 static int megasas_mgmt_open(struct inode *inode, struct file *filep)
8120 {
8121 /*
8122 * Allow only those users with admin rights
8123 */
8124 if (!capable(CAP_SYS_ADMIN))
8125 return -EACCES;
8126
8127 return 0;
8128 }
8129
8130 /*
8131 * megasas_mgmt_fasync - Async notifier registration from applications
8132 * @fd: char node file descriptor number
8133 * @filep: char node file
8134 * @mode: notifier on/off
8135 *
8136 * This function adds the calling process to a driver global queue. When an
8137 * event occurs, SIGIO will be sent to all processes in this queue.
8138 */
megasas_mgmt_fasync(int fd,struct file * filep,int mode)8139 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode)
8140 {
8141 int rc;
8142
8143 mutex_lock(&megasas_async_queue_mutex);
8144
8145 rc = fasync_helper(fd, filep, mode, &megasas_async_queue);
8146
8147 mutex_unlock(&megasas_async_queue_mutex);
8148
8149 if (rc >= 0) {
8150 /* For sanity check when we get ioctl */
8151 filep->private_data = filep;
8152 return 0;
8153 }
8154
8155 printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc);
8156
8157 return rc;
8158 }
8159
8160 /*
8161 * megasas_mgmt_poll - char node "poll" entry point
8162 * @filep: char node file
8163 * @wait: Events to poll for
8164 */
megasas_mgmt_poll(struct file * file,poll_table * wait)8165 static __poll_t megasas_mgmt_poll(struct file *file, poll_table *wait)
8166 {
8167 __poll_t mask;
8168 unsigned long flags;
8169
8170 poll_wait(file, &megasas_poll_wait, wait);
8171 spin_lock_irqsave(&poll_aen_lock, flags);
8172 if (megasas_poll_wait_aen)
8173 mask = (EPOLLIN | EPOLLRDNORM);
8174 else
8175 mask = 0;
8176 megasas_poll_wait_aen = 0;
8177 spin_unlock_irqrestore(&poll_aen_lock, flags);
8178 return mask;
8179 }
8180
8181 /*
8182 * megasas_set_crash_dump_params_ioctl:
8183 * Send CRASH_DUMP_MODE DCMD to all controllers
8184 * @cmd: MFI command frame
8185 */
8186
megasas_set_crash_dump_params_ioctl(struct megasas_cmd * cmd)8187 static int megasas_set_crash_dump_params_ioctl(struct megasas_cmd *cmd)
8188 {
8189 struct megasas_instance *local_instance;
8190 int i, error = 0;
8191 int crash_support;
8192
8193 crash_support = cmd->frame->dcmd.mbox.w[0];
8194
8195 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
8196 local_instance = megasas_mgmt_info.instance[i];
8197 if (local_instance && local_instance->crash_dump_drv_support) {
8198 if ((atomic_read(&local_instance->adprecovery) ==
8199 MEGASAS_HBA_OPERATIONAL) &&
8200 !megasas_set_crash_dump_params(local_instance,
8201 crash_support)) {
8202 local_instance->crash_dump_app_support =
8203 crash_support;
8204 dev_info(&local_instance->pdev->dev,
8205 "Application firmware crash "
8206 "dump mode set success\n");
8207 error = 0;
8208 } else {
8209 dev_info(&local_instance->pdev->dev,
8210 "Application firmware crash "
8211 "dump mode set failed\n");
8212 error = -1;
8213 }
8214 }
8215 }
8216 return error;
8217 }
8218
8219 /**
8220 * megasas_mgmt_fw_ioctl - Issues management ioctls to FW
8221 * @instance: Adapter soft state
8222 * @user_ioc: User's ioctl packet
8223 * @ioc: ioctl packet
8224 */
8225 static int
megasas_mgmt_fw_ioctl(struct megasas_instance * instance,struct megasas_iocpacket __user * user_ioc,struct megasas_iocpacket * ioc)8226 megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
8227 struct megasas_iocpacket __user * user_ioc,
8228 struct megasas_iocpacket *ioc)
8229 {
8230 struct megasas_sge64 *kern_sge64 = NULL;
8231 struct megasas_sge32 *kern_sge32 = NULL;
8232 struct megasas_cmd *cmd;
8233 void *kbuff_arr[MAX_IOCTL_SGE];
8234 dma_addr_t buf_handle = 0;
8235 int error = 0, i;
8236 void *sense = NULL;
8237 dma_addr_t sense_handle;
8238 void *sense_ptr;
8239 u32 opcode = 0;
8240 int ret = DCMD_SUCCESS;
8241
8242 memset(kbuff_arr, 0, sizeof(kbuff_arr));
8243
8244 if (ioc->sge_count > MAX_IOCTL_SGE) {
8245 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SGE count [%d] > max limit [%d]\n",
8246 ioc->sge_count, MAX_IOCTL_SGE);
8247 return -EINVAL;
8248 }
8249
8250 if ((ioc->frame.hdr.cmd >= MFI_CMD_OP_COUNT) ||
8251 ((ioc->frame.hdr.cmd == MFI_CMD_NVME) &&
8252 !instance->support_nvme_passthru) ||
8253 ((ioc->frame.hdr.cmd == MFI_CMD_TOOLBOX) &&
8254 !instance->support_pci_lane_margining)) {
8255 dev_err(&instance->pdev->dev,
8256 "Received invalid ioctl command 0x%x\n",
8257 ioc->frame.hdr.cmd);
8258 return -ENOTSUPP;
8259 }
8260
8261 cmd = megasas_get_cmd(instance);
8262 if (!cmd) {
8263 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a cmd packet\n");
8264 return -ENOMEM;
8265 }
8266
8267 /*
8268 * User's IOCTL packet has 2 frames (maximum). Copy those two
8269 * frames into our cmd's frames. cmd->frame's context will get
8270 * overwritten when we copy from user's frames. So set that value
8271 * alone separately
8272 */
8273 memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE);
8274 cmd->frame->hdr.context = cpu_to_le32(cmd->index);
8275 cmd->frame->hdr.pad_0 = 0;
8276
8277 cmd->frame->hdr.flags &= (~MFI_FRAME_IEEE);
8278
8279 if (instance->consistent_mask_64bit)
8280 cmd->frame->hdr.flags |= cpu_to_le16((MFI_FRAME_SGL64 |
8281 MFI_FRAME_SENSE64));
8282 else
8283 cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_SGL64 |
8284 MFI_FRAME_SENSE64));
8285
8286 if (cmd->frame->hdr.cmd == MFI_CMD_DCMD)
8287 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
8288
8289 if (opcode == MR_DCMD_CTRL_SHUTDOWN) {
8290 mutex_lock(&instance->reset_mutex);
8291 if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS) {
8292 megasas_return_cmd(instance, cmd);
8293 mutex_unlock(&instance->reset_mutex);
8294 return -1;
8295 }
8296 mutex_unlock(&instance->reset_mutex);
8297 }
8298
8299 if (opcode == MR_DRIVER_SET_APP_CRASHDUMP_MODE) {
8300 error = megasas_set_crash_dump_params_ioctl(cmd);
8301 megasas_return_cmd(instance, cmd);
8302 return error;
8303 }
8304
8305 /*
8306 * The management interface between applications and the fw uses
8307 * MFI frames. E.g, RAID configuration changes, LD property changes
8308 * etc are accomplishes through different kinds of MFI frames. The
8309 * driver needs to care only about substituting user buffers with
8310 * kernel buffers in SGLs. The location of SGL is embedded in the
8311 * struct iocpacket itself.
8312 */
8313 if (instance->consistent_mask_64bit)
8314 kern_sge64 = (struct megasas_sge64 *)
8315 ((unsigned long)cmd->frame + ioc->sgl_off);
8316 else
8317 kern_sge32 = (struct megasas_sge32 *)
8318 ((unsigned long)cmd->frame + ioc->sgl_off);
8319
8320 /*
8321 * For each user buffer, create a mirror buffer and copy in
8322 */
8323 for (i = 0; i < ioc->sge_count; i++) {
8324 if (!ioc->sgl[i].iov_len)
8325 continue;
8326
8327 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev,
8328 ioc->sgl[i].iov_len,
8329 &buf_handle, GFP_KERNEL);
8330 if (!kbuff_arr[i]) {
8331 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc "
8332 "kernel SGL buffer for IOCTL\n");
8333 error = -ENOMEM;
8334 goto out;
8335 }
8336
8337 /*
8338 * We don't change the dma_coherent_mask, so
8339 * dma_alloc_coherent only returns 32bit addresses
8340 */
8341 if (instance->consistent_mask_64bit) {
8342 kern_sge64[i].phys_addr = cpu_to_le64(buf_handle);
8343 kern_sge64[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
8344 } else {
8345 kern_sge32[i].phys_addr = cpu_to_le32(buf_handle);
8346 kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
8347 }
8348
8349 /*
8350 * We created a kernel buffer corresponding to the
8351 * user buffer. Now copy in from the user buffer
8352 */
8353 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base,
8354 (u32) (ioc->sgl[i].iov_len))) {
8355 error = -EFAULT;
8356 goto out;
8357 }
8358 }
8359
8360 if (ioc->sense_len) {
8361 /* make sure the pointer is part of the frame */
8362 if (ioc->sense_off >
8363 (sizeof(union megasas_frame) - sizeof(__le64))) {
8364 error = -EINVAL;
8365 goto out;
8366 }
8367
8368 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len,
8369 &sense_handle, GFP_KERNEL);
8370 if (!sense) {
8371 error = -ENOMEM;
8372 goto out;
8373 }
8374
8375 /* always store 64 bits regardless of addressing */
8376 sense_ptr = (void *)cmd->frame + ioc->sense_off;
8377 put_unaligned_le64(sense_handle, sense_ptr);
8378 }
8379
8380 /*
8381 * Set the sync_cmd flag so that the ISR knows not to complete this
8382 * cmd to the SCSI mid-layer
8383 */
8384 cmd->sync_cmd = 1;
8385
8386 ret = megasas_issue_blocked_cmd(instance, cmd, 0);
8387 switch (ret) {
8388 case DCMD_INIT:
8389 case DCMD_BUSY:
8390 cmd->sync_cmd = 0;
8391 dev_err(&instance->pdev->dev,
8392 "return -EBUSY from %s %d cmd 0x%x opcode 0x%x cmd->cmd_status_drv 0x%x\n",
8393 __func__, __LINE__, cmd->frame->hdr.cmd, opcode,
8394 cmd->cmd_status_drv);
8395 error = -EBUSY;
8396 goto out;
8397 }
8398
8399 cmd->sync_cmd = 0;
8400
8401 if (instance->unload == 1) {
8402 dev_info(&instance->pdev->dev, "Driver unload is in progress "
8403 "don't submit data to application\n");
8404 goto out;
8405 }
8406 /*
8407 * copy out the kernel buffers to user buffers
8408 */
8409 for (i = 0; i < ioc->sge_count; i++) {
8410 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i],
8411 ioc->sgl[i].iov_len)) {
8412 error = -EFAULT;
8413 goto out;
8414 }
8415 }
8416
8417 /*
8418 * copy out the sense
8419 */
8420 if (ioc->sense_len) {
8421 void __user *uptr;
8422 /*
8423 * sense_ptr points to the location that has the user
8424 * sense buffer address
8425 */
8426 sense_ptr = (void *)ioc->frame.raw + ioc->sense_off;
8427 if (in_compat_syscall())
8428 uptr = compat_ptr(get_unaligned((compat_uptr_t *)
8429 sense_ptr));
8430 else
8431 uptr = get_unaligned((void __user **)sense_ptr);
8432
8433 if (copy_to_user(uptr, sense, ioc->sense_len)) {
8434 dev_err(&instance->pdev->dev, "Failed to copy out to user "
8435 "sense data\n");
8436 error = -EFAULT;
8437 goto out;
8438 }
8439 }
8440
8441 /*
8442 * copy the status codes returned by the fw
8443 */
8444 if (copy_to_user(&user_ioc->frame.hdr.cmd_status,
8445 &cmd->frame->hdr.cmd_status, sizeof(u8))) {
8446 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error copying out cmd_status\n");
8447 error = -EFAULT;
8448 }
8449
8450 out:
8451 if (sense) {
8452 dma_free_coherent(&instance->pdev->dev, ioc->sense_len,
8453 sense, sense_handle);
8454 }
8455
8456 for (i = 0; i < ioc->sge_count; i++) {
8457 if (kbuff_arr[i]) {
8458 if (instance->consistent_mask_64bit)
8459 dma_free_coherent(&instance->pdev->dev,
8460 le32_to_cpu(kern_sge64[i].length),
8461 kbuff_arr[i],
8462 le64_to_cpu(kern_sge64[i].phys_addr));
8463 else
8464 dma_free_coherent(&instance->pdev->dev,
8465 le32_to_cpu(kern_sge32[i].length),
8466 kbuff_arr[i],
8467 le32_to_cpu(kern_sge32[i].phys_addr));
8468 kbuff_arr[i] = NULL;
8469 }
8470 }
8471
8472 megasas_return_cmd(instance, cmd);
8473 return error;
8474 }
8475
8476 static struct megasas_iocpacket *
megasas_compat_iocpacket_get_user(void __user * arg)8477 megasas_compat_iocpacket_get_user(void __user *arg)
8478 {
8479 struct megasas_iocpacket *ioc;
8480 struct compat_megasas_iocpacket __user *cioc = arg;
8481 size_t size;
8482 int err = -EFAULT;
8483 int i;
8484
8485 ioc = kzalloc(sizeof(*ioc), GFP_KERNEL);
8486 if (!ioc)
8487 return ERR_PTR(-ENOMEM);
8488 size = offsetof(struct megasas_iocpacket, frame) + sizeof(ioc->frame);
8489 if (copy_from_user(ioc, arg, size))
8490 goto out;
8491
8492 for (i = 0; i < MAX_IOCTL_SGE; i++) {
8493 compat_uptr_t iov_base;
8494
8495 if (get_user(iov_base, &cioc->sgl[i].iov_base) ||
8496 get_user(ioc->sgl[i].iov_len, &cioc->sgl[i].iov_len))
8497 goto out;
8498
8499 ioc->sgl[i].iov_base = compat_ptr(iov_base);
8500 }
8501
8502 return ioc;
8503 out:
8504 kfree(ioc);
8505 return ERR_PTR(err);
8506 }
8507
megasas_mgmt_ioctl_fw(struct file * file,unsigned long arg)8508 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg)
8509 {
8510 struct megasas_iocpacket __user *user_ioc =
8511 (struct megasas_iocpacket __user *)arg;
8512 struct megasas_iocpacket *ioc;
8513 struct megasas_instance *instance;
8514 int error;
8515
8516 if (in_compat_syscall())
8517 ioc = megasas_compat_iocpacket_get_user(user_ioc);
8518 else
8519 ioc = memdup_user(user_ioc, sizeof(struct megasas_iocpacket));
8520
8521 if (IS_ERR(ioc))
8522 return PTR_ERR(ioc);
8523
8524 instance = megasas_lookup_instance(ioc->host_no);
8525 if (!instance) {
8526 error = -ENODEV;
8527 goto out_kfree_ioc;
8528 }
8529
8530 /* Block ioctls in VF mode */
8531 if (instance->requestorId && !allow_vf_ioctls) {
8532 error = -ENODEV;
8533 goto out_kfree_ioc;
8534 }
8535
8536 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
8537 dev_err(&instance->pdev->dev, "Controller in crit error\n");
8538 error = -ENODEV;
8539 goto out_kfree_ioc;
8540 }
8541
8542 if (instance->unload == 1) {
8543 error = -ENODEV;
8544 goto out_kfree_ioc;
8545 }
8546
8547 if (down_interruptible(&instance->ioctl_sem)) {
8548 error = -ERESTARTSYS;
8549 goto out_kfree_ioc;
8550 }
8551
8552 if (megasas_wait_for_adapter_operational(instance)) {
8553 error = -ENODEV;
8554 goto out_up;
8555 }
8556
8557 error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc);
8558 out_up:
8559 up(&instance->ioctl_sem);
8560
8561 out_kfree_ioc:
8562 kfree(ioc);
8563 return error;
8564 }
8565
megasas_mgmt_ioctl_aen(struct file * file,unsigned long arg)8566 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg)
8567 {
8568 struct megasas_instance *instance;
8569 struct megasas_aen aen;
8570 int error;
8571
8572 if (file->private_data != file) {
8573 printk(KERN_DEBUG "megasas: fasync_helper was not "
8574 "called first\n");
8575 return -EINVAL;
8576 }
8577
8578 if (copy_from_user(&aen, (void __user *)arg, sizeof(aen)))
8579 return -EFAULT;
8580
8581 instance = megasas_lookup_instance(aen.host_no);
8582
8583 if (!instance)
8584 return -ENODEV;
8585
8586 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
8587 return -ENODEV;
8588 }
8589
8590 if (instance->unload == 1) {
8591 return -ENODEV;
8592 }
8593
8594 if (megasas_wait_for_adapter_operational(instance))
8595 return -ENODEV;
8596
8597 mutex_lock(&instance->reset_mutex);
8598 error = megasas_register_aen(instance, aen.seq_num,
8599 aen.class_locale_word);
8600 mutex_unlock(&instance->reset_mutex);
8601 return error;
8602 }
8603
8604 /**
8605 * megasas_mgmt_ioctl - char node ioctl entry point
8606 * @file: char device file pointer
8607 * @cmd: ioctl command
8608 * @arg: ioctl command arguments address
8609 */
8610 static long
megasas_mgmt_ioctl(struct file * file,unsigned int cmd,unsigned long arg)8611 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
8612 {
8613 switch (cmd) {
8614 case MEGASAS_IOC_FIRMWARE:
8615 return megasas_mgmt_ioctl_fw(file, arg);
8616
8617 case MEGASAS_IOC_GET_AEN:
8618 return megasas_mgmt_ioctl_aen(file, arg);
8619 }
8620
8621 return -ENOTTY;
8622 }
8623
8624 #ifdef CONFIG_COMPAT
8625 static long
megasas_mgmt_compat_ioctl(struct file * file,unsigned int cmd,unsigned long arg)8626 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd,
8627 unsigned long arg)
8628 {
8629 switch (cmd) {
8630 case MEGASAS_IOC_FIRMWARE32:
8631 return megasas_mgmt_ioctl_fw(file, arg);
8632 case MEGASAS_IOC_GET_AEN:
8633 return megasas_mgmt_ioctl_aen(file, arg);
8634 }
8635
8636 return -ENOTTY;
8637 }
8638 #endif
8639
8640 /*
8641 * File operations structure for management interface
8642 */
8643 static const struct file_operations megasas_mgmt_fops = {
8644 .owner = THIS_MODULE,
8645 .open = megasas_mgmt_open,
8646 .fasync = megasas_mgmt_fasync,
8647 .unlocked_ioctl = megasas_mgmt_ioctl,
8648 .poll = megasas_mgmt_poll,
8649 #ifdef CONFIG_COMPAT
8650 .compat_ioctl = megasas_mgmt_compat_ioctl,
8651 #endif
8652 .llseek = noop_llseek,
8653 };
8654
8655 static SIMPLE_DEV_PM_OPS(megasas_pm_ops, megasas_suspend, megasas_resume);
8656
8657 /*
8658 * PCI hotplug support registration structure
8659 */
8660 static struct pci_driver megasas_pci_driver = {
8661
8662 .name = "megaraid_sas",
8663 .id_table = megasas_pci_table,
8664 .probe = megasas_probe_one,
8665 .remove = megasas_detach_one,
8666 .driver.pm = &megasas_pm_ops,
8667 .shutdown = megasas_shutdown,
8668 };
8669
8670 /*
8671 * Sysfs driver attributes
8672 */
version_show(struct device_driver * dd,char * buf)8673 static ssize_t version_show(struct device_driver *dd, char *buf)
8674 {
8675 return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n",
8676 MEGASAS_VERSION);
8677 }
8678 static DRIVER_ATTR_RO(version);
8679
release_date_show(struct device_driver * dd,char * buf)8680 static ssize_t release_date_show(struct device_driver *dd, char *buf)
8681 {
8682 return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n",
8683 MEGASAS_RELDATE);
8684 }
8685 static DRIVER_ATTR_RO(release_date);
8686
support_poll_for_event_show(struct device_driver * dd,char * buf)8687 static ssize_t support_poll_for_event_show(struct device_driver *dd, char *buf)
8688 {
8689 return sprintf(buf, "%u\n", support_poll_for_event);
8690 }
8691 static DRIVER_ATTR_RO(support_poll_for_event);
8692
support_device_change_show(struct device_driver * dd,char * buf)8693 static ssize_t support_device_change_show(struct device_driver *dd, char *buf)
8694 {
8695 return sprintf(buf, "%u\n", support_device_change);
8696 }
8697 static DRIVER_ATTR_RO(support_device_change);
8698
dbg_lvl_show(struct device_driver * dd,char * buf)8699 static ssize_t dbg_lvl_show(struct device_driver *dd, char *buf)
8700 {
8701 return sprintf(buf, "%u\n", megasas_dbg_lvl);
8702 }
8703
dbg_lvl_store(struct device_driver * dd,const char * buf,size_t count)8704 static ssize_t dbg_lvl_store(struct device_driver *dd, const char *buf,
8705 size_t count)
8706 {
8707 int retval = count;
8708
8709 if (sscanf(buf, "%u", &megasas_dbg_lvl) < 1) {
8710 printk(KERN_ERR "megasas: could not set dbg_lvl\n");
8711 retval = -EINVAL;
8712 }
8713 return retval;
8714 }
8715 static DRIVER_ATTR_RW(dbg_lvl);
8716
8717 static ssize_t
support_nvme_encapsulation_show(struct device_driver * dd,char * buf)8718 support_nvme_encapsulation_show(struct device_driver *dd, char *buf)
8719 {
8720 return sprintf(buf, "%u\n", support_nvme_encapsulation);
8721 }
8722
8723 static DRIVER_ATTR_RO(support_nvme_encapsulation);
8724
8725 static ssize_t
support_pci_lane_margining_show(struct device_driver * dd,char * buf)8726 support_pci_lane_margining_show(struct device_driver *dd, char *buf)
8727 {
8728 return sprintf(buf, "%u\n", support_pci_lane_margining);
8729 }
8730
8731 static DRIVER_ATTR_RO(support_pci_lane_margining);
8732
megasas_remove_scsi_device(struct scsi_device * sdev)8733 static inline void megasas_remove_scsi_device(struct scsi_device *sdev)
8734 {
8735 sdev_printk(KERN_INFO, sdev, "SCSI device is removed\n");
8736 scsi_remove_device(sdev);
8737 scsi_device_put(sdev);
8738 }
8739
8740 /**
8741 * megasas_update_device_list - Update the PD and LD device list from FW
8742 * after an AEN event notification
8743 * @instance: Adapter soft state
8744 * @event_type: Indicates type of event (PD or LD event)
8745 *
8746 * @return: Success or failure
8747 *
8748 * Issue DCMDs to Firmware to update the internal device list in driver.
8749 * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination
8750 * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list.
8751 */
8752 static
megasas_update_device_list(struct megasas_instance * instance,int event_type)8753 int megasas_update_device_list(struct megasas_instance *instance,
8754 int event_type)
8755 {
8756 int dcmd_ret;
8757
8758 if (instance->enable_fw_dev_list) {
8759 return megasas_host_device_list_query(instance, false);
8760 } else {
8761 if (event_type & SCAN_PD_CHANNEL) {
8762 dcmd_ret = megasas_get_pd_list(instance);
8763 if (dcmd_ret != DCMD_SUCCESS)
8764 return dcmd_ret;
8765 }
8766
8767 if (event_type & SCAN_VD_CHANNEL) {
8768 if (!instance->requestorId ||
8769 megasas_get_ld_vf_affiliation(instance, 0)) {
8770 return megasas_ld_list_query(instance,
8771 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST);
8772 }
8773 }
8774 }
8775 return DCMD_SUCCESS;
8776 }
8777
8778 /**
8779 * megasas_add_remove_devices - Add/remove devices to SCSI mid-layer
8780 * after an AEN event notification
8781 * @instance: Adapter soft state
8782 * @scan_type: Indicates type of devices (PD/LD) to add
8783 * @return void
8784 */
8785 static
megasas_add_remove_devices(struct megasas_instance * instance,int scan_type)8786 void megasas_add_remove_devices(struct megasas_instance *instance,
8787 int scan_type)
8788 {
8789 int i, j;
8790 u16 pd_index = 0;
8791 u16 ld_index = 0;
8792 u16 channel = 0, id = 0;
8793 struct Scsi_Host *host;
8794 struct scsi_device *sdev1;
8795 struct MR_HOST_DEVICE_LIST *targetid_list = NULL;
8796 struct MR_HOST_DEVICE_LIST_ENTRY *targetid_entry = NULL;
8797
8798 host = instance->host;
8799
8800 if (instance->enable_fw_dev_list) {
8801 targetid_list = instance->host_device_list_buf;
8802 for (i = 0; i < targetid_list->count; i++) {
8803 targetid_entry = &targetid_list->host_device_list[i];
8804 if (targetid_entry->flags.u.bits.is_sys_pd) {
8805 channel = le16_to_cpu(targetid_entry->target_id) /
8806 MEGASAS_MAX_DEV_PER_CHANNEL;
8807 id = le16_to_cpu(targetid_entry->target_id) %
8808 MEGASAS_MAX_DEV_PER_CHANNEL;
8809 } else {
8810 channel = MEGASAS_MAX_PD_CHANNELS +
8811 (le16_to_cpu(targetid_entry->target_id) /
8812 MEGASAS_MAX_DEV_PER_CHANNEL);
8813 id = le16_to_cpu(targetid_entry->target_id) %
8814 MEGASAS_MAX_DEV_PER_CHANNEL;
8815 }
8816 sdev1 = scsi_device_lookup(host, channel, id, 0);
8817 if (!sdev1) {
8818 scsi_add_device(host, channel, id, 0);
8819 } else {
8820 scsi_device_put(sdev1);
8821 }
8822 }
8823 }
8824
8825 if (scan_type & SCAN_PD_CHANNEL) {
8826 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
8827 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
8828 pd_index = i * MEGASAS_MAX_DEV_PER_CHANNEL + j;
8829 sdev1 = scsi_device_lookup(host, i, j, 0);
8830 if (instance->pd_list[pd_index].driveState ==
8831 MR_PD_STATE_SYSTEM) {
8832 if (!sdev1)
8833 scsi_add_device(host, i, j, 0);
8834 else
8835 scsi_device_put(sdev1);
8836 } else {
8837 if (sdev1)
8838 megasas_remove_scsi_device(sdev1);
8839 }
8840 }
8841 }
8842 }
8843
8844 if (scan_type & SCAN_VD_CHANNEL) {
8845 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
8846 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
8847 ld_index = (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
8848 sdev1 = scsi_device_lookup(host,
8849 MEGASAS_MAX_PD_CHANNELS + i, j, 0);
8850 if (instance->ld_ids[ld_index] != 0xff) {
8851 if (!sdev1)
8852 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
8853 else
8854 scsi_device_put(sdev1);
8855 } else {
8856 if (sdev1)
8857 megasas_remove_scsi_device(sdev1);
8858 }
8859 }
8860 }
8861 }
8862
8863 }
8864
8865 static void
megasas_aen_polling(struct work_struct * work)8866 megasas_aen_polling(struct work_struct *work)
8867 {
8868 struct megasas_aen_event *ev =
8869 container_of(work, struct megasas_aen_event, hotplug_work.work);
8870 struct megasas_instance *instance = ev->instance;
8871 union megasas_evt_class_locale class_locale;
8872 int event_type = 0;
8873 u32 seq_num;
8874 u16 ld_target_id;
8875 int error;
8876 u8 dcmd_ret = DCMD_SUCCESS;
8877 struct scsi_device *sdev1;
8878
8879 if (!instance) {
8880 printk(KERN_ERR "invalid instance!\n");
8881 kfree(ev);
8882 return;
8883 }
8884
8885 /* Don't run the event workqueue thread if OCR is running */
8886 mutex_lock(&instance->reset_mutex);
8887
8888 instance->ev = NULL;
8889 if (instance->evt_detail) {
8890 megasas_decode_evt(instance);
8891
8892 switch (le32_to_cpu(instance->evt_detail->code)) {
8893
8894 case MR_EVT_PD_INSERTED:
8895 case MR_EVT_PD_REMOVED:
8896 event_type = SCAN_PD_CHANNEL;
8897 break;
8898
8899 case MR_EVT_LD_OFFLINE:
8900 case MR_EVT_LD_DELETED:
8901 ld_target_id = instance->evt_detail->args.ld.target_id;
8902 sdev1 = scsi_device_lookup(instance->host,
8903 MEGASAS_MAX_PD_CHANNELS +
8904 (ld_target_id / MEGASAS_MAX_DEV_PER_CHANNEL),
8905 (ld_target_id % MEGASAS_MAX_DEV_PER_CHANNEL),
8906 0);
8907 if (sdev1)
8908 megasas_remove_scsi_device(sdev1);
8909
8910 event_type = SCAN_VD_CHANNEL;
8911 break;
8912 case MR_EVT_LD_CREATED:
8913 event_type = SCAN_VD_CHANNEL;
8914 break;
8915
8916 case MR_EVT_CFG_CLEARED:
8917 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED:
8918 case MR_EVT_FOREIGN_CFG_IMPORTED:
8919 case MR_EVT_LD_STATE_CHANGE:
8920 event_type = SCAN_PD_CHANNEL | SCAN_VD_CHANNEL;
8921 dev_info(&instance->pdev->dev, "scanning for scsi%d...\n",
8922 instance->host->host_no);
8923 break;
8924
8925 case MR_EVT_CTRL_PROP_CHANGED:
8926 dcmd_ret = megasas_get_ctrl_info(instance);
8927 if (dcmd_ret == DCMD_SUCCESS &&
8928 instance->snapdump_wait_time) {
8929 megasas_get_snapdump_properties(instance);
8930 dev_info(&instance->pdev->dev,
8931 "Snap dump wait time\t: %d\n",
8932 instance->snapdump_wait_time);
8933 }
8934 break;
8935 default:
8936 event_type = 0;
8937 break;
8938 }
8939 } else {
8940 dev_err(&instance->pdev->dev, "invalid evt_detail!\n");
8941 mutex_unlock(&instance->reset_mutex);
8942 kfree(ev);
8943 return;
8944 }
8945
8946 if (event_type)
8947 dcmd_ret = megasas_update_device_list(instance, event_type);
8948
8949 mutex_unlock(&instance->reset_mutex);
8950
8951 if (event_type && dcmd_ret == DCMD_SUCCESS)
8952 megasas_add_remove_devices(instance, event_type);
8953
8954 if (dcmd_ret == DCMD_SUCCESS)
8955 seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1;
8956 else
8957 seq_num = instance->last_seq_num;
8958
8959 /* Register AEN with FW for latest sequence number plus 1 */
8960 class_locale.members.reserved = 0;
8961 class_locale.members.locale = MR_EVT_LOCALE_ALL;
8962 class_locale.members.class = MR_EVT_CLASS_DEBUG;
8963
8964 if (instance->aen_cmd != NULL) {
8965 kfree(ev);
8966 return;
8967 }
8968
8969 mutex_lock(&instance->reset_mutex);
8970 error = megasas_register_aen(instance, seq_num,
8971 class_locale.word);
8972 if (error)
8973 dev_err(&instance->pdev->dev,
8974 "register aen failed error %x\n", error);
8975
8976 mutex_unlock(&instance->reset_mutex);
8977 kfree(ev);
8978 }
8979
8980 /**
8981 * megasas_init - Driver load entry point
8982 */
megasas_init(void)8983 static int __init megasas_init(void)
8984 {
8985 int rval;
8986
8987 /*
8988 * Booted in kdump kernel, minimize memory footprints by
8989 * disabling few features
8990 */
8991 if (reset_devices) {
8992 msix_vectors = 1;
8993 rdpq_enable = 0;
8994 dual_qdepth_disable = 1;
8995 poll_queues = 0;
8996 }
8997
8998 /*
8999 * Announce driver version and other information
9000 */
9001 pr_info("megasas: %s\n", MEGASAS_VERSION);
9002
9003 megasas_dbg_lvl = 0;
9004 support_poll_for_event = 2;
9005 support_device_change = 1;
9006 support_nvme_encapsulation = true;
9007 support_pci_lane_margining = true;
9008
9009 memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info));
9010
9011 /*
9012 * Register character device node
9013 */
9014 rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops);
9015
9016 if (rval < 0) {
9017 printk(KERN_DEBUG "megasas: failed to open device node\n");
9018 return rval;
9019 }
9020
9021 megasas_mgmt_majorno = rval;
9022
9023 megasas_init_debugfs();
9024
9025 /*
9026 * Register ourselves as PCI hotplug module
9027 */
9028 rval = pci_register_driver(&megasas_pci_driver);
9029
9030 if (rval) {
9031 printk(KERN_DEBUG "megasas: PCI hotplug registration failed \n");
9032 goto err_pcidrv;
9033 }
9034
9035 if ((event_log_level < MFI_EVT_CLASS_DEBUG) ||
9036 (event_log_level > MFI_EVT_CLASS_DEAD)) {
9037 pr_warn("megaraid_sas: provided event log level is out of range, setting it to default 2(CLASS_CRITICAL), permissible range is: -2 to 4\n");
9038 event_log_level = MFI_EVT_CLASS_CRITICAL;
9039 }
9040
9041 rval = driver_create_file(&megasas_pci_driver.driver,
9042 &driver_attr_version);
9043 if (rval)
9044 goto err_dcf_attr_ver;
9045
9046 rval = driver_create_file(&megasas_pci_driver.driver,
9047 &driver_attr_release_date);
9048 if (rval)
9049 goto err_dcf_rel_date;
9050
9051 rval = driver_create_file(&megasas_pci_driver.driver,
9052 &driver_attr_support_poll_for_event);
9053 if (rval)
9054 goto err_dcf_support_poll_for_event;
9055
9056 rval = driver_create_file(&megasas_pci_driver.driver,
9057 &driver_attr_dbg_lvl);
9058 if (rval)
9059 goto err_dcf_dbg_lvl;
9060 rval = driver_create_file(&megasas_pci_driver.driver,
9061 &driver_attr_support_device_change);
9062 if (rval)
9063 goto err_dcf_support_device_change;
9064
9065 rval = driver_create_file(&megasas_pci_driver.driver,
9066 &driver_attr_support_nvme_encapsulation);
9067 if (rval)
9068 goto err_dcf_support_nvme_encapsulation;
9069
9070 rval = driver_create_file(&megasas_pci_driver.driver,
9071 &driver_attr_support_pci_lane_margining);
9072 if (rval)
9073 goto err_dcf_support_pci_lane_margining;
9074
9075 return rval;
9076
9077 err_dcf_support_pci_lane_margining:
9078 driver_remove_file(&megasas_pci_driver.driver,
9079 &driver_attr_support_nvme_encapsulation);
9080
9081 err_dcf_support_nvme_encapsulation:
9082 driver_remove_file(&megasas_pci_driver.driver,
9083 &driver_attr_support_device_change);
9084
9085 err_dcf_support_device_change:
9086 driver_remove_file(&megasas_pci_driver.driver,
9087 &driver_attr_dbg_lvl);
9088 err_dcf_dbg_lvl:
9089 driver_remove_file(&megasas_pci_driver.driver,
9090 &driver_attr_support_poll_for_event);
9091 err_dcf_support_poll_for_event:
9092 driver_remove_file(&megasas_pci_driver.driver,
9093 &driver_attr_release_date);
9094 err_dcf_rel_date:
9095 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
9096 err_dcf_attr_ver:
9097 pci_unregister_driver(&megasas_pci_driver);
9098 err_pcidrv:
9099 megasas_exit_debugfs();
9100 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
9101 return rval;
9102 }
9103
9104 /**
9105 * megasas_exit - Driver unload entry point
9106 */
megasas_exit(void)9107 static void __exit megasas_exit(void)
9108 {
9109 driver_remove_file(&megasas_pci_driver.driver,
9110 &driver_attr_dbg_lvl);
9111 driver_remove_file(&megasas_pci_driver.driver,
9112 &driver_attr_support_poll_for_event);
9113 driver_remove_file(&megasas_pci_driver.driver,
9114 &driver_attr_support_device_change);
9115 driver_remove_file(&megasas_pci_driver.driver,
9116 &driver_attr_release_date);
9117 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
9118 driver_remove_file(&megasas_pci_driver.driver,
9119 &driver_attr_support_nvme_encapsulation);
9120 driver_remove_file(&megasas_pci_driver.driver,
9121 &driver_attr_support_pci_lane_margining);
9122
9123 pci_unregister_driver(&megasas_pci_driver);
9124 megasas_exit_debugfs();
9125 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
9126 }
9127
9128 module_init(megasas_init);
9129 module_exit(megasas_exit);
9130
