1 /*
2 * Linux MegaRAID driver for SAS based RAID controllers
3 *
4 * Copyright (c) 2003-2013 LSI Corporation
5 * Copyright (c) 2013-2014 Avago Technologies
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
19 *
20 * Authors: Avago Technologies
21 * Sreenivas Bagalkote
22 * Sumant Patro
23 * Bo Yang
24 * Adam Radford
25 * Kashyap Desai <kashyap.desai@avagotech.com>
26 * Sumit Saxena <sumit.saxena@avagotech.com>
27 *
28 * Send feedback to: megaraidlinux.pdl@avagotech.com
29 *
30 * Mail to: Avago Technologies, 350 West Trimble Road, Building 90,
31 * San Jose, California 95131
32 */
33
34 #include <linux/kernel.h>
35 #include <linux/types.h>
36 #include <linux/pci.h>
37 #include <linux/list.h>
38 #include <linux/moduleparam.h>
39 #include <linux/module.h>
40 #include <linux/spinlock.h>
41 #include <linux/interrupt.h>
42 #include <linux/delay.h>
43 #include <linux/uio.h>
44 #include <linux/slab.h>
45 #include <linux/uaccess.h>
46 #include <asm/unaligned.h>
47 #include <linux/fs.h>
48 #include <linux/compat.h>
49 #include <linux/blkdev.h>
50 #include <linux/mutex.h>
51 #include <linux/poll.h>
52 #include <linux/vmalloc.h>
53
54 #include <scsi/scsi.h>
55 #include <scsi/scsi_cmnd.h>
56 #include <scsi/scsi_device.h>
57 #include <scsi/scsi_host.h>
58 #include <scsi/scsi_tcq.h>
59 #include "megaraid_sas_fusion.h"
60 #include "megaraid_sas.h"
61
62 /*
63 * Number of sectors per IO command
64 * Will be set in megasas_init_mfi if user does not provide
65 */
66 static unsigned int max_sectors;
67 module_param_named(max_sectors, max_sectors, int, 0);
68 MODULE_PARM_DESC(max_sectors,
69 "Maximum number of sectors per IO command");
70
71 static int msix_disable;
72 module_param(msix_disable, int, S_IRUGO);
73 MODULE_PARM_DESC(msix_disable, "Disable MSI-X interrupt handling. Default: 0");
74
75 static unsigned int msix_vectors;
76 module_param(msix_vectors, int, S_IRUGO);
77 MODULE_PARM_DESC(msix_vectors, "MSI-X max vector count. Default: Set by FW");
78
79 static int allow_vf_ioctls;
80 module_param(allow_vf_ioctls, int, S_IRUGO);
81 MODULE_PARM_DESC(allow_vf_ioctls, "Allow ioctls in SR-IOV VF mode. Default: 0");
82
83 static unsigned int throttlequeuedepth = MEGASAS_THROTTLE_QUEUE_DEPTH;
84 module_param(throttlequeuedepth, int, S_IRUGO);
85 MODULE_PARM_DESC(throttlequeuedepth,
86 "Adapter queue depth when throttled due to I/O timeout. Default: 16");
87
88 unsigned int resetwaittime = MEGASAS_RESET_WAIT_TIME;
89 module_param(resetwaittime, int, S_IRUGO);
90 MODULE_PARM_DESC(resetwaittime, "Wait time in seconds after I/O timeout "
91 "before resetting adapter. Default: 180");
92
93 int smp_affinity_enable = 1;
94 module_param(smp_affinity_enable, int, S_IRUGO);
95 MODULE_PARM_DESC(smp_affinity_enable, "SMP affinity feature enable/disable Default: enable(1)");
96
97 int rdpq_enable = 1;
98 module_param(rdpq_enable, int, S_IRUGO);
99 MODULE_PARM_DESC(rdpq_enable, " Allocate reply queue in chunks for large queue depth enable/disable Default: disable(0)");
100
101 unsigned int dual_qdepth_disable;
102 module_param(dual_qdepth_disable, int, S_IRUGO);
103 MODULE_PARM_DESC(dual_qdepth_disable, "Disable dual queue depth feature. Default: 0");
104
105 unsigned int scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT;
106 module_param(scmd_timeout, int, S_IRUGO);
107 MODULE_PARM_DESC(scmd_timeout, "scsi command timeout (10-90s), default 90s. See megasas_reset_timer.");
108
109 MODULE_LICENSE("GPL");
110 MODULE_VERSION(MEGASAS_VERSION);
111 MODULE_AUTHOR("megaraidlinux.pdl@avagotech.com");
112 MODULE_DESCRIPTION("Avago MegaRAID SAS Driver");
113
114 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
115 static int megasas_get_pd_list(struct megasas_instance *instance);
116 static int megasas_ld_list_query(struct megasas_instance *instance,
117 u8 query_type);
118 static int megasas_issue_init_mfi(struct megasas_instance *instance);
119 static int megasas_register_aen(struct megasas_instance *instance,
120 u32 seq_num, u32 class_locale_word);
121 static void megasas_get_pd_info(struct megasas_instance *instance,
122 struct scsi_device *sdev);
123
124 /*
125 * PCI ID table for all supported controllers
126 */
127 static struct pci_device_id megasas_pci_table[] = {
128
129 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)},
130 /* xscale IOP */
131 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)},
132 /* ppc IOP */
133 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)},
134 /* ppc IOP */
135 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)},
136 /* gen2*/
137 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)},
138 /* gen2*/
139 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)},
140 /* skinny*/
141 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)},
142 /* skinny*/
143 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)},
144 /* xscale IOP, vega */
145 {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)},
146 /* xscale IOP */
147 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)},
148 /* Fusion */
149 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_PLASMA)},
150 /* Plasma */
151 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)},
152 /* Invader */
153 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FURY)},
154 /* Fury */
155 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER)},
156 /* Intruder */
157 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER_24)},
158 /* Intruder 24 port*/
159 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_52)},
160 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_53)},
161 /* VENTURA */
162 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VENTURA)},
163 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CRUSADER)},
164 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_HARPOON)},
165 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_TOMCAT)},
166 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VENTURA_4PORT)},
167 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CRUSADER_4PORT)},
168 {}
169 };
170
171 MODULE_DEVICE_TABLE(pci, megasas_pci_table);
172
173 static int megasas_mgmt_majorno;
174 struct megasas_mgmt_info megasas_mgmt_info;
175 static struct fasync_struct *megasas_async_queue;
176 static DEFINE_MUTEX(megasas_async_queue_mutex);
177
178 static int megasas_poll_wait_aen;
179 static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait);
180 static u32 support_poll_for_event;
181 u32 megasas_dbg_lvl;
182 static u32 support_device_change;
183 static bool support_nvme_encapsulation;
184
185 /* define lock for aen poll */
186 spinlock_t poll_aen_lock;
187
188 void
189 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
190 u8 alt_status);
191 static u32
192 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs);
193 static int
194 megasas_adp_reset_gen2(struct megasas_instance *instance,
195 struct megasas_register_set __iomem *reg_set);
196 static irqreturn_t megasas_isr(int irq, void *devp);
197 static u32
198 megasas_init_adapter_mfi(struct megasas_instance *instance);
199 u32
200 megasas_build_and_issue_cmd(struct megasas_instance *instance,
201 struct scsi_cmnd *scmd);
202 static void megasas_complete_cmd_dpc(unsigned long instance_addr);
203 int
204 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
205 int seconds);
206 void megasas_fusion_ocr_wq(struct work_struct *work);
207 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
208 int initial);
209 static int
210 megasas_set_dma_mask(struct megasas_instance *instance);
211 static int
212 megasas_alloc_ctrl_mem(struct megasas_instance *instance);
213 static inline void
214 megasas_free_ctrl_mem(struct megasas_instance *instance);
215 static inline int
216 megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance);
217 static inline void
218 megasas_free_ctrl_dma_buffers(struct megasas_instance *instance);
219 static inline void
220 megasas_init_ctrl_params(struct megasas_instance *instance);
221
222 /**
223 * megasas_set_dma_settings - Populate DMA address, length and flags for DCMDs
224 * @instance: Adapter soft state
225 * @dcmd: DCMD frame inside MFI command
226 * @dma_addr: DMA address of buffer to be passed to FW
227 * @dma_len: Length of DMA buffer to be passed to FW
228 * @return: void
229 */
megasas_set_dma_settings(struct megasas_instance * instance,struct megasas_dcmd_frame * dcmd,dma_addr_t dma_addr,u32 dma_len)230 void megasas_set_dma_settings(struct megasas_instance *instance,
231 struct megasas_dcmd_frame *dcmd,
232 dma_addr_t dma_addr, u32 dma_len)
233 {
234 if (instance->consistent_mask_64bit) {
235 dcmd->sgl.sge64[0].phys_addr = cpu_to_le64(dma_addr);
236 dcmd->sgl.sge64[0].length = cpu_to_le32(dma_len);
237 dcmd->flags = cpu_to_le16(dcmd->flags | MFI_FRAME_SGL64);
238
239 } else {
240 dcmd->sgl.sge32[0].phys_addr =
241 cpu_to_le32(lower_32_bits(dma_addr));
242 dcmd->sgl.sge32[0].length = cpu_to_le32(dma_len);
243 dcmd->flags = cpu_to_le16(dcmd->flags);
244 }
245 }
246
247 void
megasas_issue_dcmd(struct megasas_instance * instance,struct megasas_cmd * cmd)248 megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
249 {
250 instance->instancet->fire_cmd(instance,
251 cmd->frame_phys_addr, 0, instance->reg_set);
252 return;
253 }
254
255 /**
256 * megasas_get_cmd - Get a command from the free pool
257 * @instance: Adapter soft state
258 *
259 * Returns a free command from the pool
260 */
megasas_get_cmd(struct megasas_instance * instance)261 struct megasas_cmd *megasas_get_cmd(struct megasas_instance
262 *instance)
263 {
264 unsigned long flags;
265 struct megasas_cmd *cmd = NULL;
266
267 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
268
269 if (!list_empty(&instance->cmd_pool)) {
270 cmd = list_entry((&instance->cmd_pool)->next,
271 struct megasas_cmd, list);
272 list_del_init(&cmd->list);
273 } else {
274 dev_err(&instance->pdev->dev, "Command pool empty!\n");
275 }
276
277 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
278 return cmd;
279 }
280
281 /**
282 * megasas_return_cmd - Return a cmd to free command pool
283 * @instance: Adapter soft state
284 * @cmd: Command packet to be returned to free command pool
285 */
286 void
megasas_return_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd)287 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
288 {
289 unsigned long flags;
290 u32 blk_tags;
291 struct megasas_cmd_fusion *cmd_fusion;
292 struct fusion_context *fusion = instance->ctrl_context;
293
294 /* This flag is used only for fusion adapter.
295 * Wait for Interrupt for Polled mode DCMD
296 */
297 if (cmd->flags & DRV_DCMD_POLLED_MODE)
298 return;
299
300 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
301
302 if (fusion) {
303 blk_tags = instance->max_scsi_cmds + cmd->index;
304 cmd_fusion = fusion->cmd_list[blk_tags];
305 megasas_return_cmd_fusion(instance, cmd_fusion);
306 }
307 cmd->scmd = NULL;
308 cmd->frame_count = 0;
309 cmd->flags = 0;
310 memset(cmd->frame, 0, instance->mfi_frame_size);
311 cmd->frame->io.context = cpu_to_le32(cmd->index);
312 if (!fusion && reset_devices)
313 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
314 list_add(&cmd->list, (&instance->cmd_pool)->next);
315
316 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
317
318 }
319
320 static const char *
format_timestamp(uint32_t timestamp)321 format_timestamp(uint32_t timestamp)
322 {
323 static char buffer[32];
324
325 if ((timestamp & 0xff000000) == 0xff000000)
326 snprintf(buffer, sizeof(buffer), "boot + %us", timestamp &
327 0x00ffffff);
328 else
329 snprintf(buffer, sizeof(buffer), "%us", timestamp);
330 return buffer;
331 }
332
333 static const char *
format_class(int8_t class)334 format_class(int8_t class)
335 {
336 static char buffer[6];
337
338 switch (class) {
339 case MFI_EVT_CLASS_DEBUG:
340 return "debug";
341 case MFI_EVT_CLASS_PROGRESS:
342 return "progress";
343 case MFI_EVT_CLASS_INFO:
344 return "info";
345 case MFI_EVT_CLASS_WARNING:
346 return "WARN";
347 case MFI_EVT_CLASS_CRITICAL:
348 return "CRIT";
349 case MFI_EVT_CLASS_FATAL:
350 return "FATAL";
351 case MFI_EVT_CLASS_DEAD:
352 return "DEAD";
353 default:
354 snprintf(buffer, sizeof(buffer), "%d", class);
355 return buffer;
356 }
357 }
358
359 /**
360 * megasas_decode_evt: Decode FW AEN event and print critical event
361 * for information.
362 * @instance: Adapter soft state
363 */
364 static void
megasas_decode_evt(struct megasas_instance * instance)365 megasas_decode_evt(struct megasas_instance *instance)
366 {
367 struct megasas_evt_detail *evt_detail = instance->evt_detail;
368 union megasas_evt_class_locale class_locale;
369 class_locale.word = le32_to_cpu(evt_detail->cl.word);
370
371 if (class_locale.members.class >= MFI_EVT_CLASS_CRITICAL)
372 dev_info(&instance->pdev->dev, "%d (%s/0x%04x/%s) - %s\n",
373 le32_to_cpu(evt_detail->seq_num),
374 format_timestamp(le32_to_cpu(evt_detail->time_stamp)),
375 (class_locale.members.locale),
376 format_class(class_locale.members.class),
377 evt_detail->description);
378 }
379
380 /**
381 * The following functions are defined for xscale
382 * (deviceid : 1064R, PERC5) controllers
383 */
384
385 /**
386 * megasas_enable_intr_xscale - Enables interrupts
387 * @regs: MFI register set
388 */
389 static inline void
megasas_enable_intr_xscale(struct megasas_instance * instance)390 megasas_enable_intr_xscale(struct megasas_instance *instance)
391 {
392 struct megasas_register_set __iomem *regs;
393
394 regs = instance->reg_set;
395 writel(0, &(regs)->outbound_intr_mask);
396
397 /* Dummy readl to force pci flush */
398 readl(®s->outbound_intr_mask);
399 }
400
401 /**
402 * megasas_disable_intr_xscale -Disables interrupt
403 * @regs: MFI register set
404 */
405 static inline void
megasas_disable_intr_xscale(struct megasas_instance * instance)406 megasas_disable_intr_xscale(struct megasas_instance *instance)
407 {
408 struct megasas_register_set __iomem *regs;
409 u32 mask = 0x1f;
410
411 regs = instance->reg_set;
412 writel(mask, ®s->outbound_intr_mask);
413 /* Dummy readl to force pci flush */
414 readl(®s->outbound_intr_mask);
415 }
416
417 /**
418 * megasas_read_fw_status_reg_xscale - returns the current FW status value
419 * @regs: MFI register set
420 */
421 static u32
megasas_read_fw_status_reg_xscale(struct megasas_register_set __iomem * regs)422 megasas_read_fw_status_reg_xscale(struct megasas_register_set __iomem * regs)
423 {
424 return readl(&(regs)->outbound_msg_0);
425 }
426 /**
427 * megasas_clear_interrupt_xscale - Check & clear interrupt
428 * @regs: MFI register set
429 */
430 static int
megasas_clear_intr_xscale(struct megasas_register_set __iomem * regs)431 megasas_clear_intr_xscale(struct megasas_register_set __iomem * regs)
432 {
433 u32 status;
434 u32 mfiStatus = 0;
435
436 /*
437 * Check if it is our interrupt
438 */
439 status = readl(®s->outbound_intr_status);
440
441 if (status & MFI_OB_INTR_STATUS_MASK)
442 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
443 if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT)
444 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
445
446 /*
447 * Clear the interrupt by writing back the same value
448 */
449 if (mfiStatus)
450 writel(status, ®s->outbound_intr_status);
451
452 /* Dummy readl to force pci flush */
453 readl(®s->outbound_intr_status);
454
455 return mfiStatus;
456 }
457
458 /**
459 * megasas_fire_cmd_xscale - Sends command to the FW
460 * @frame_phys_addr : Physical address of cmd
461 * @frame_count : Number of frames for the command
462 * @regs : MFI register set
463 */
464 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)465 megasas_fire_cmd_xscale(struct megasas_instance *instance,
466 dma_addr_t frame_phys_addr,
467 u32 frame_count,
468 struct megasas_register_set __iomem *regs)
469 {
470 unsigned long flags;
471
472 spin_lock_irqsave(&instance->hba_lock, flags);
473 writel((frame_phys_addr >> 3)|(frame_count),
474 &(regs)->inbound_queue_port);
475 spin_unlock_irqrestore(&instance->hba_lock, flags);
476 }
477
478 /**
479 * megasas_adp_reset_xscale - For controller reset
480 * @regs: MFI register set
481 */
482 static int
megasas_adp_reset_xscale(struct megasas_instance * instance,struct megasas_register_set __iomem * regs)483 megasas_adp_reset_xscale(struct megasas_instance *instance,
484 struct megasas_register_set __iomem *regs)
485 {
486 u32 i;
487 u32 pcidata;
488
489 writel(MFI_ADP_RESET, ®s->inbound_doorbell);
490
491 for (i = 0; i < 3; i++)
492 msleep(1000); /* sleep for 3 secs */
493 pcidata = 0;
494 pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata);
495 dev_notice(&instance->pdev->dev, "pcidata = %x\n", pcidata);
496 if (pcidata & 0x2) {
497 dev_notice(&instance->pdev->dev, "mfi 1068 offset read=%x\n", pcidata);
498 pcidata &= ~0x2;
499 pci_write_config_dword(instance->pdev,
500 MFI_1068_PCSR_OFFSET, pcidata);
501
502 for (i = 0; i < 2; i++)
503 msleep(1000); /* need to wait 2 secs again */
504
505 pcidata = 0;
506 pci_read_config_dword(instance->pdev,
507 MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata);
508 dev_notice(&instance->pdev->dev, "1068 offset handshake read=%x\n", pcidata);
509 if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) {
510 dev_notice(&instance->pdev->dev, "1068 offset pcidt=%x\n", pcidata);
511 pcidata = 0;
512 pci_write_config_dword(instance->pdev,
513 MFI_1068_FW_HANDSHAKE_OFFSET, pcidata);
514 }
515 }
516 return 0;
517 }
518
519 /**
520 * megasas_check_reset_xscale - For controller reset check
521 * @regs: MFI register set
522 */
523 static int
megasas_check_reset_xscale(struct megasas_instance * instance,struct megasas_register_set __iomem * regs)524 megasas_check_reset_xscale(struct megasas_instance *instance,
525 struct megasas_register_set __iomem *regs)
526 {
527 if ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) &&
528 (le32_to_cpu(*instance->consumer) ==
529 MEGASAS_ADPRESET_INPROG_SIGN))
530 return 1;
531 return 0;
532 }
533
534 static struct megasas_instance_template megasas_instance_template_xscale = {
535
536 .fire_cmd = megasas_fire_cmd_xscale,
537 .enable_intr = megasas_enable_intr_xscale,
538 .disable_intr = megasas_disable_intr_xscale,
539 .clear_intr = megasas_clear_intr_xscale,
540 .read_fw_status_reg = megasas_read_fw_status_reg_xscale,
541 .adp_reset = megasas_adp_reset_xscale,
542 .check_reset = megasas_check_reset_xscale,
543 .service_isr = megasas_isr,
544 .tasklet = megasas_complete_cmd_dpc,
545 .init_adapter = megasas_init_adapter_mfi,
546 .build_and_issue_cmd = megasas_build_and_issue_cmd,
547 .issue_dcmd = megasas_issue_dcmd,
548 };
549
550 /**
551 * This is the end of set of functions & definitions specific
552 * to xscale (deviceid : 1064R, PERC5) controllers
553 */
554
555 /**
556 * The following functions are defined for ppc (deviceid : 0x60)
557 * controllers
558 */
559
560 /**
561 * megasas_enable_intr_ppc - Enables interrupts
562 * @regs: MFI register set
563 */
564 static inline void
megasas_enable_intr_ppc(struct megasas_instance * instance)565 megasas_enable_intr_ppc(struct megasas_instance *instance)
566 {
567 struct megasas_register_set __iomem *regs;
568
569 regs = instance->reg_set;
570 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
571
572 writel(~0x80000000, &(regs)->outbound_intr_mask);
573
574 /* Dummy readl to force pci flush */
575 readl(®s->outbound_intr_mask);
576 }
577
578 /**
579 * megasas_disable_intr_ppc - Disable interrupt
580 * @regs: MFI register set
581 */
582 static inline void
megasas_disable_intr_ppc(struct megasas_instance * instance)583 megasas_disable_intr_ppc(struct megasas_instance *instance)
584 {
585 struct megasas_register_set __iomem *regs;
586 u32 mask = 0xFFFFFFFF;
587
588 regs = instance->reg_set;
589 writel(mask, ®s->outbound_intr_mask);
590 /* Dummy readl to force pci flush */
591 readl(®s->outbound_intr_mask);
592 }
593
594 /**
595 * megasas_read_fw_status_reg_ppc - returns the current FW status value
596 * @regs: MFI register set
597 */
598 static u32
megasas_read_fw_status_reg_ppc(struct megasas_register_set __iomem * regs)599 megasas_read_fw_status_reg_ppc(struct megasas_register_set __iomem * regs)
600 {
601 return readl(&(regs)->outbound_scratch_pad);
602 }
603
604 /**
605 * megasas_clear_interrupt_ppc - Check & clear interrupt
606 * @regs: MFI register set
607 */
608 static int
megasas_clear_intr_ppc(struct megasas_register_set __iomem * regs)609 megasas_clear_intr_ppc(struct megasas_register_set __iomem * regs)
610 {
611 u32 status, mfiStatus = 0;
612
613 /*
614 * Check if it is our interrupt
615 */
616 status = readl(®s->outbound_intr_status);
617
618 if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT)
619 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
620
621 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT)
622 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
623
624 /*
625 * Clear the interrupt by writing back the same value
626 */
627 writel(status, ®s->outbound_doorbell_clear);
628
629 /* Dummy readl to force pci flush */
630 readl(®s->outbound_doorbell_clear);
631
632 return mfiStatus;
633 }
634
635 /**
636 * megasas_fire_cmd_ppc - Sends command to the FW
637 * @frame_phys_addr : Physical address of cmd
638 * @frame_count : Number of frames for the command
639 * @regs : MFI register set
640 */
641 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)642 megasas_fire_cmd_ppc(struct megasas_instance *instance,
643 dma_addr_t frame_phys_addr,
644 u32 frame_count,
645 struct megasas_register_set __iomem *regs)
646 {
647 unsigned long flags;
648
649 spin_lock_irqsave(&instance->hba_lock, flags);
650 writel((frame_phys_addr | (frame_count<<1))|1,
651 &(regs)->inbound_queue_port);
652 spin_unlock_irqrestore(&instance->hba_lock, flags);
653 }
654
655 /**
656 * megasas_check_reset_ppc - For controller reset check
657 * @regs: MFI register set
658 */
659 static int
megasas_check_reset_ppc(struct megasas_instance * instance,struct megasas_register_set __iomem * regs)660 megasas_check_reset_ppc(struct megasas_instance *instance,
661 struct megasas_register_set __iomem *regs)
662 {
663 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
664 return 1;
665
666 return 0;
667 }
668
669 static struct megasas_instance_template megasas_instance_template_ppc = {
670
671 .fire_cmd = megasas_fire_cmd_ppc,
672 .enable_intr = megasas_enable_intr_ppc,
673 .disable_intr = megasas_disable_intr_ppc,
674 .clear_intr = megasas_clear_intr_ppc,
675 .read_fw_status_reg = megasas_read_fw_status_reg_ppc,
676 .adp_reset = megasas_adp_reset_xscale,
677 .check_reset = megasas_check_reset_ppc,
678 .service_isr = megasas_isr,
679 .tasklet = megasas_complete_cmd_dpc,
680 .init_adapter = megasas_init_adapter_mfi,
681 .build_and_issue_cmd = megasas_build_and_issue_cmd,
682 .issue_dcmd = megasas_issue_dcmd,
683 };
684
685 /**
686 * megasas_enable_intr_skinny - Enables interrupts
687 * @regs: MFI register set
688 */
689 static inline void
megasas_enable_intr_skinny(struct megasas_instance * instance)690 megasas_enable_intr_skinny(struct megasas_instance *instance)
691 {
692 struct megasas_register_set __iomem *regs;
693
694 regs = instance->reg_set;
695 writel(0xFFFFFFFF, &(regs)->outbound_intr_mask);
696
697 writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
698
699 /* Dummy readl to force pci flush */
700 readl(®s->outbound_intr_mask);
701 }
702
703 /**
704 * megasas_disable_intr_skinny - Disables interrupt
705 * @regs: MFI register set
706 */
707 static inline void
megasas_disable_intr_skinny(struct megasas_instance * instance)708 megasas_disable_intr_skinny(struct megasas_instance *instance)
709 {
710 struct megasas_register_set __iomem *regs;
711 u32 mask = 0xFFFFFFFF;
712
713 regs = instance->reg_set;
714 writel(mask, ®s->outbound_intr_mask);
715 /* Dummy readl to force pci flush */
716 readl(®s->outbound_intr_mask);
717 }
718
719 /**
720 * megasas_read_fw_status_reg_skinny - returns the current FW status value
721 * @regs: MFI register set
722 */
723 static u32
megasas_read_fw_status_reg_skinny(struct megasas_register_set __iomem * regs)724 megasas_read_fw_status_reg_skinny(struct megasas_register_set __iomem *regs)
725 {
726 return readl(&(regs)->outbound_scratch_pad);
727 }
728
729 /**
730 * megasas_clear_interrupt_skinny - Check & clear interrupt
731 * @regs: MFI register set
732 */
733 static int
megasas_clear_intr_skinny(struct megasas_register_set __iomem * regs)734 megasas_clear_intr_skinny(struct megasas_register_set __iomem *regs)
735 {
736 u32 status;
737 u32 mfiStatus = 0;
738
739 /*
740 * Check if it is our interrupt
741 */
742 status = readl(®s->outbound_intr_status);
743
744 if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) {
745 return 0;
746 }
747
748 /*
749 * Check if it is our interrupt
750 */
751 if ((megasas_read_fw_status_reg_skinny(regs) & MFI_STATE_MASK) ==
752 MFI_STATE_FAULT) {
753 mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
754 } else
755 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
756
757 /*
758 * Clear the interrupt by writing back the same value
759 */
760 writel(status, ®s->outbound_intr_status);
761
762 /*
763 * dummy read to flush PCI
764 */
765 readl(®s->outbound_intr_status);
766
767 return mfiStatus;
768 }
769
770 /**
771 * megasas_fire_cmd_skinny - Sends command to the FW
772 * @frame_phys_addr : Physical address of cmd
773 * @frame_count : Number of frames for the command
774 * @regs : MFI register set
775 */
776 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)777 megasas_fire_cmd_skinny(struct megasas_instance *instance,
778 dma_addr_t frame_phys_addr,
779 u32 frame_count,
780 struct megasas_register_set __iomem *regs)
781 {
782 unsigned long flags;
783
784 spin_lock_irqsave(&instance->hba_lock, flags);
785 writel(upper_32_bits(frame_phys_addr),
786 &(regs)->inbound_high_queue_port);
787 writel((lower_32_bits(frame_phys_addr) | (frame_count<<1))|1,
788 &(regs)->inbound_low_queue_port);
789 mmiowb();
790 spin_unlock_irqrestore(&instance->hba_lock, flags);
791 }
792
793 /**
794 * megasas_check_reset_skinny - For controller reset check
795 * @regs: MFI register set
796 */
797 static int
megasas_check_reset_skinny(struct megasas_instance * instance,struct megasas_register_set __iomem * regs)798 megasas_check_reset_skinny(struct megasas_instance *instance,
799 struct megasas_register_set __iomem *regs)
800 {
801 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
802 return 1;
803
804 return 0;
805 }
806
807 static struct megasas_instance_template megasas_instance_template_skinny = {
808
809 .fire_cmd = megasas_fire_cmd_skinny,
810 .enable_intr = megasas_enable_intr_skinny,
811 .disable_intr = megasas_disable_intr_skinny,
812 .clear_intr = megasas_clear_intr_skinny,
813 .read_fw_status_reg = megasas_read_fw_status_reg_skinny,
814 .adp_reset = megasas_adp_reset_gen2,
815 .check_reset = megasas_check_reset_skinny,
816 .service_isr = megasas_isr,
817 .tasklet = megasas_complete_cmd_dpc,
818 .init_adapter = megasas_init_adapter_mfi,
819 .build_and_issue_cmd = megasas_build_and_issue_cmd,
820 .issue_dcmd = megasas_issue_dcmd,
821 };
822
823
824 /**
825 * The following functions are defined for gen2 (deviceid : 0x78 0x79)
826 * controllers
827 */
828
829 /**
830 * megasas_enable_intr_gen2 - Enables interrupts
831 * @regs: MFI register set
832 */
833 static inline void
megasas_enable_intr_gen2(struct megasas_instance * instance)834 megasas_enable_intr_gen2(struct megasas_instance *instance)
835 {
836 struct megasas_register_set __iomem *regs;
837
838 regs = instance->reg_set;
839 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
840
841 /* write ~0x00000005 (4 & 1) to the intr mask*/
842 writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
843
844 /* Dummy readl to force pci flush */
845 readl(®s->outbound_intr_mask);
846 }
847
848 /**
849 * megasas_disable_intr_gen2 - Disables interrupt
850 * @regs: MFI register set
851 */
852 static inline void
megasas_disable_intr_gen2(struct megasas_instance * instance)853 megasas_disable_intr_gen2(struct megasas_instance *instance)
854 {
855 struct megasas_register_set __iomem *regs;
856 u32 mask = 0xFFFFFFFF;
857
858 regs = instance->reg_set;
859 writel(mask, ®s->outbound_intr_mask);
860 /* Dummy readl to force pci flush */
861 readl(®s->outbound_intr_mask);
862 }
863
864 /**
865 * megasas_read_fw_status_reg_gen2 - returns the current FW status value
866 * @regs: MFI register set
867 */
868 static u32
megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem * regs)869 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs)
870 {
871 return readl(&(regs)->outbound_scratch_pad);
872 }
873
874 /**
875 * megasas_clear_interrupt_gen2 - Check & clear interrupt
876 * @regs: MFI register set
877 */
878 static int
megasas_clear_intr_gen2(struct megasas_register_set __iomem * regs)879 megasas_clear_intr_gen2(struct megasas_register_set __iomem *regs)
880 {
881 u32 status;
882 u32 mfiStatus = 0;
883
884 /*
885 * Check if it is our interrupt
886 */
887 status = readl(®s->outbound_intr_status);
888
889 if (status & MFI_INTR_FLAG_REPLY_MESSAGE) {
890 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
891 }
892 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) {
893 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
894 }
895
896 /*
897 * Clear the interrupt by writing back the same value
898 */
899 if (mfiStatus)
900 writel(status, ®s->outbound_doorbell_clear);
901
902 /* Dummy readl to force pci flush */
903 readl(®s->outbound_intr_status);
904
905 return mfiStatus;
906 }
907 /**
908 * megasas_fire_cmd_gen2 - Sends command to the FW
909 * @frame_phys_addr : Physical address of cmd
910 * @frame_count : Number of frames for the command
911 * @regs : MFI register set
912 */
913 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)914 megasas_fire_cmd_gen2(struct megasas_instance *instance,
915 dma_addr_t frame_phys_addr,
916 u32 frame_count,
917 struct megasas_register_set __iomem *regs)
918 {
919 unsigned long flags;
920
921 spin_lock_irqsave(&instance->hba_lock, flags);
922 writel((frame_phys_addr | (frame_count<<1))|1,
923 &(regs)->inbound_queue_port);
924 spin_unlock_irqrestore(&instance->hba_lock, flags);
925 }
926
927 /**
928 * megasas_adp_reset_gen2 - For controller reset
929 * @regs: MFI register set
930 */
931 static int
megasas_adp_reset_gen2(struct megasas_instance * instance,struct megasas_register_set __iomem * reg_set)932 megasas_adp_reset_gen2(struct megasas_instance *instance,
933 struct megasas_register_set __iomem *reg_set)
934 {
935 u32 retry = 0 ;
936 u32 HostDiag;
937 u32 __iomem *seq_offset = ®_set->seq_offset;
938 u32 __iomem *hostdiag_offset = ®_set->host_diag;
939
940 if (instance->instancet == &megasas_instance_template_skinny) {
941 seq_offset = ®_set->fusion_seq_offset;
942 hostdiag_offset = ®_set->fusion_host_diag;
943 }
944
945 writel(0, seq_offset);
946 writel(4, seq_offset);
947 writel(0xb, seq_offset);
948 writel(2, seq_offset);
949 writel(7, seq_offset);
950 writel(0xd, seq_offset);
951
952 msleep(1000);
953
954 HostDiag = (u32)readl(hostdiag_offset);
955
956 while (!(HostDiag & DIAG_WRITE_ENABLE)) {
957 msleep(100);
958 HostDiag = (u32)readl(hostdiag_offset);
959 dev_notice(&instance->pdev->dev, "RESETGEN2: retry=%x, hostdiag=%x\n",
960 retry, HostDiag);
961
962 if (retry++ >= 100)
963 return 1;
964
965 }
966
967 dev_notice(&instance->pdev->dev, "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag);
968
969 writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset);
970
971 ssleep(10);
972
973 HostDiag = (u32)readl(hostdiag_offset);
974 while (HostDiag & DIAG_RESET_ADAPTER) {
975 msleep(100);
976 HostDiag = (u32)readl(hostdiag_offset);
977 dev_notice(&instance->pdev->dev, "RESET_GEN2: retry=%x, hostdiag=%x\n",
978 retry, HostDiag);
979
980 if (retry++ >= 1000)
981 return 1;
982
983 }
984 return 0;
985 }
986
987 /**
988 * megasas_check_reset_gen2 - For controller reset check
989 * @regs: MFI register set
990 */
991 static int
megasas_check_reset_gen2(struct megasas_instance * instance,struct megasas_register_set __iomem * regs)992 megasas_check_reset_gen2(struct megasas_instance *instance,
993 struct megasas_register_set __iomem *regs)
994 {
995 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
996 return 1;
997
998 return 0;
999 }
1000
1001 static struct megasas_instance_template megasas_instance_template_gen2 = {
1002
1003 .fire_cmd = megasas_fire_cmd_gen2,
1004 .enable_intr = megasas_enable_intr_gen2,
1005 .disable_intr = megasas_disable_intr_gen2,
1006 .clear_intr = megasas_clear_intr_gen2,
1007 .read_fw_status_reg = megasas_read_fw_status_reg_gen2,
1008 .adp_reset = megasas_adp_reset_gen2,
1009 .check_reset = megasas_check_reset_gen2,
1010 .service_isr = megasas_isr,
1011 .tasklet = megasas_complete_cmd_dpc,
1012 .init_adapter = megasas_init_adapter_mfi,
1013 .build_and_issue_cmd = megasas_build_and_issue_cmd,
1014 .issue_dcmd = megasas_issue_dcmd,
1015 };
1016
1017 /**
1018 * This is the end of set of functions & definitions
1019 * specific to gen2 (deviceid : 0x78, 0x79) controllers
1020 */
1021
1022 /*
1023 * Template added for TB (Fusion)
1024 */
1025 extern struct megasas_instance_template megasas_instance_template_fusion;
1026
1027 /**
1028 * megasas_issue_polled - Issues a polling command
1029 * @instance: Adapter soft state
1030 * @cmd: Command packet to be issued
1031 *
1032 * For polling, MFI requires the cmd_status to be set to MFI_STAT_INVALID_STATUS before posting.
1033 */
1034 int
megasas_issue_polled(struct megasas_instance * instance,struct megasas_cmd * cmd)1035 megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd)
1036 {
1037 struct megasas_header *frame_hdr = &cmd->frame->hdr;
1038
1039 frame_hdr->cmd_status = MFI_STAT_INVALID_STATUS;
1040 frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
1041
1042 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1043 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1044 __func__, __LINE__);
1045 return DCMD_NOT_FIRED;
1046 }
1047
1048 instance->instancet->issue_dcmd(instance, cmd);
1049
1050 return wait_and_poll(instance, cmd, instance->requestorId ?
1051 MEGASAS_ROUTINE_WAIT_TIME_VF : MFI_IO_TIMEOUT_SECS);
1052 }
1053
1054 /**
1055 * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds
1056 * @instance: Adapter soft state
1057 * @cmd: Command to be issued
1058 * @timeout: Timeout in seconds
1059 *
1060 * This function waits on an event for the command to be returned from ISR.
1061 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
1062 * Used to issue ioctl commands.
1063 */
1064 int
megasas_issue_blocked_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd,int timeout)1065 megasas_issue_blocked_cmd(struct megasas_instance *instance,
1066 struct megasas_cmd *cmd, int timeout)
1067 {
1068 int ret = 0;
1069 cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
1070
1071 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1072 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1073 __func__, __LINE__);
1074 return DCMD_NOT_FIRED;
1075 }
1076
1077 instance->instancet->issue_dcmd(instance, cmd);
1078
1079 if (timeout) {
1080 ret = wait_event_timeout(instance->int_cmd_wait_q,
1081 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS, timeout * HZ);
1082 if (!ret) {
1083 dev_err(&instance->pdev->dev, "Failed from %s %d DCMD Timed out\n",
1084 __func__, __LINE__);
1085 return DCMD_TIMEOUT;
1086 }
1087 } else
1088 wait_event(instance->int_cmd_wait_q,
1089 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS);
1090
1091 return (cmd->cmd_status_drv == MFI_STAT_OK) ?
1092 DCMD_SUCCESS : DCMD_FAILED;
1093 }
1094
1095 /**
1096 * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd
1097 * @instance: Adapter soft state
1098 * @cmd_to_abort: Previously issued cmd to be aborted
1099 * @timeout: Timeout in seconds
1100 *
1101 * MFI firmware can abort previously issued AEN comamnd (automatic event
1102 * notification). The megasas_issue_blocked_abort_cmd() issues such abort
1103 * cmd and waits for return status.
1104 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
1105 */
1106 static int
megasas_issue_blocked_abort_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd_to_abort,int timeout)1107 megasas_issue_blocked_abort_cmd(struct megasas_instance *instance,
1108 struct megasas_cmd *cmd_to_abort, int timeout)
1109 {
1110 struct megasas_cmd *cmd;
1111 struct megasas_abort_frame *abort_fr;
1112 int ret = 0;
1113
1114 cmd = megasas_get_cmd(instance);
1115
1116 if (!cmd)
1117 return -1;
1118
1119 abort_fr = &cmd->frame->abort;
1120
1121 /*
1122 * Prepare and issue the abort frame
1123 */
1124 abort_fr->cmd = MFI_CMD_ABORT;
1125 abort_fr->cmd_status = MFI_STAT_INVALID_STATUS;
1126 abort_fr->flags = cpu_to_le16(0);
1127 abort_fr->abort_context = cpu_to_le32(cmd_to_abort->index);
1128 abort_fr->abort_mfi_phys_addr_lo =
1129 cpu_to_le32(lower_32_bits(cmd_to_abort->frame_phys_addr));
1130 abort_fr->abort_mfi_phys_addr_hi =
1131 cpu_to_le32(upper_32_bits(cmd_to_abort->frame_phys_addr));
1132
1133 cmd->sync_cmd = 1;
1134 cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
1135
1136 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1137 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1138 __func__, __LINE__);
1139 return DCMD_NOT_FIRED;
1140 }
1141
1142 instance->instancet->issue_dcmd(instance, cmd);
1143
1144 if (timeout) {
1145 ret = wait_event_timeout(instance->abort_cmd_wait_q,
1146 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS, timeout * HZ);
1147 if (!ret) {
1148 dev_err(&instance->pdev->dev, "Failed from %s %d Abort Timed out\n",
1149 __func__, __LINE__);
1150 return DCMD_TIMEOUT;
1151 }
1152 } else
1153 wait_event(instance->abort_cmd_wait_q,
1154 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS);
1155
1156 cmd->sync_cmd = 0;
1157
1158 megasas_return_cmd(instance, cmd);
1159 return (cmd->cmd_status_drv == MFI_STAT_OK) ?
1160 DCMD_SUCCESS : DCMD_FAILED;
1161 }
1162
1163 /**
1164 * megasas_make_sgl32 - Prepares 32-bit SGL
1165 * @instance: Adapter soft state
1166 * @scp: SCSI command from the mid-layer
1167 * @mfi_sgl: SGL to be filled in
1168 *
1169 * If successful, this function returns the number of SG elements. Otherwise,
1170 * it returnes -1.
1171 */
1172 static int
megasas_make_sgl32(struct megasas_instance * instance,struct scsi_cmnd * scp,union megasas_sgl * mfi_sgl)1173 megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp,
1174 union megasas_sgl *mfi_sgl)
1175 {
1176 int i;
1177 int sge_count;
1178 struct scatterlist *os_sgl;
1179
1180 sge_count = scsi_dma_map(scp);
1181 BUG_ON(sge_count < 0);
1182
1183 if (sge_count) {
1184 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1185 mfi_sgl->sge32[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1186 mfi_sgl->sge32[i].phys_addr = cpu_to_le32(sg_dma_address(os_sgl));
1187 }
1188 }
1189 return sge_count;
1190 }
1191
1192 /**
1193 * megasas_make_sgl64 - Prepares 64-bit SGL
1194 * @instance: Adapter soft state
1195 * @scp: SCSI command from the mid-layer
1196 * @mfi_sgl: SGL to be filled in
1197 *
1198 * If successful, this function returns the number of SG elements. Otherwise,
1199 * it returnes -1.
1200 */
1201 static int
megasas_make_sgl64(struct megasas_instance * instance,struct scsi_cmnd * scp,union megasas_sgl * mfi_sgl)1202 megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp,
1203 union megasas_sgl *mfi_sgl)
1204 {
1205 int i;
1206 int sge_count;
1207 struct scatterlist *os_sgl;
1208
1209 sge_count = scsi_dma_map(scp);
1210 BUG_ON(sge_count < 0);
1211
1212 if (sge_count) {
1213 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1214 mfi_sgl->sge64[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1215 mfi_sgl->sge64[i].phys_addr = cpu_to_le64(sg_dma_address(os_sgl));
1216 }
1217 }
1218 return sge_count;
1219 }
1220
1221 /**
1222 * megasas_make_sgl_skinny - Prepares IEEE SGL
1223 * @instance: Adapter soft state
1224 * @scp: SCSI command from the mid-layer
1225 * @mfi_sgl: SGL to be filled in
1226 *
1227 * If successful, this function returns the number of SG elements. Otherwise,
1228 * it returnes -1.
1229 */
1230 static int
megasas_make_sgl_skinny(struct megasas_instance * instance,struct scsi_cmnd * scp,union megasas_sgl * mfi_sgl)1231 megasas_make_sgl_skinny(struct megasas_instance *instance,
1232 struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl)
1233 {
1234 int i;
1235 int sge_count;
1236 struct scatterlist *os_sgl;
1237
1238 sge_count = scsi_dma_map(scp);
1239
1240 if (sge_count) {
1241 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1242 mfi_sgl->sge_skinny[i].length =
1243 cpu_to_le32(sg_dma_len(os_sgl));
1244 mfi_sgl->sge_skinny[i].phys_addr =
1245 cpu_to_le64(sg_dma_address(os_sgl));
1246 mfi_sgl->sge_skinny[i].flag = cpu_to_le32(0);
1247 }
1248 }
1249 return sge_count;
1250 }
1251
1252 /**
1253 * megasas_get_frame_count - Computes the number of frames
1254 * @frame_type : type of frame- io or pthru frame
1255 * @sge_count : number of sg elements
1256 *
1257 * Returns the number of frames required for numnber of sge's (sge_count)
1258 */
1259
megasas_get_frame_count(struct megasas_instance * instance,u8 sge_count,u8 frame_type)1260 static u32 megasas_get_frame_count(struct megasas_instance *instance,
1261 u8 sge_count, u8 frame_type)
1262 {
1263 int num_cnt;
1264 int sge_bytes;
1265 u32 sge_sz;
1266 u32 frame_count = 0;
1267
1268 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
1269 sizeof(struct megasas_sge32);
1270
1271 if (instance->flag_ieee) {
1272 sge_sz = sizeof(struct megasas_sge_skinny);
1273 }
1274
1275 /*
1276 * Main frame can contain 2 SGEs for 64-bit SGLs and
1277 * 3 SGEs for 32-bit SGLs for ldio &
1278 * 1 SGEs for 64-bit SGLs and
1279 * 2 SGEs for 32-bit SGLs for pthru frame
1280 */
1281 if (unlikely(frame_type == PTHRU_FRAME)) {
1282 if (instance->flag_ieee == 1) {
1283 num_cnt = sge_count - 1;
1284 } else if (IS_DMA64)
1285 num_cnt = sge_count - 1;
1286 else
1287 num_cnt = sge_count - 2;
1288 } else {
1289 if (instance->flag_ieee == 1) {
1290 num_cnt = sge_count - 1;
1291 } else if (IS_DMA64)
1292 num_cnt = sge_count - 2;
1293 else
1294 num_cnt = sge_count - 3;
1295 }
1296
1297 if (num_cnt > 0) {
1298 sge_bytes = sge_sz * num_cnt;
1299
1300 frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) +
1301 ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ;
1302 }
1303 /* Main frame */
1304 frame_count += 1;
1305
1306 if (frame_count > 7)
1307 frame_count = 8;
1308 return frame_count;
1309 }
1310
1311 /**
1312 * megasas_build_dcdb - Prepares a direct cdb (DCDB) command
1313 * @instance: Adapter soft state
1314 * @scp: SCSI command
1315 * @cmd: Command to be prepared in
1316 *
1317 * This function prepares CDB commands. These are typcially pass-through
1318 * commands to the devices.
1319 */
1320 static int
megasas_build_dcdb(struct megasas_instance * instance,struct scsi_cmnd * scp,struct megasas_cmd * cmd)1321 megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp,
1322 struct megasas_cmd *cmd)
1323 {
1324 u32 is_logical;
1325 u32 device_id;
1326 u16 flags = 0;
1327 struct megasas_pthru_frame *pthru;
1328
1329 is_logical = MEGASAS_IS_LOGICAL(scp->device);
1330 device_id = MEGASAS_DEV_INDEX(scp);
1331 pthru = (struct megasas_pthru_frame *)cmd->frame;
1332
1333 if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1334 flags = MFI_FRAME_DIR_WRITE;
1335 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1336 flags = MFI_FRAME_DIR_READ;
1337 else if (scp->sc_data_direction == PCI_DMA_NONE)
1338 flags = MFI_FRAME_DIR_NONE;
1339
1340 if (instance->flag_ieee == 1) {
1341 flags |= MFI_FRAME_IEEE;
1342 }
1343
1344 /*
1345 * Prepare the DCDB frame
1346 */
1347 pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO;
1348 pthru->cmd_status = 0x0;
1349 pthru->scsi_status = 0x0;
1350 pthru->target_id = device_id;
1351 pthru->lun = scp->device->lun;
1352 pthru->cdb_len = scp->cmd_len;
1353 pthru->timeout = 0;
1354 pthru->pad_0 = 0;
1355 pthru->flags = cpu_to_le16(flags);
1356 pthru->data_xfer_len = cpu_to_le32(scsi_bufflen(scp));
1357
1358 memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);
1359
1360 /*
1361 * If the command is for the tape device, set the
1362 * pthru timeout to the os layer timeout value.
1363 */
1364 if (scp->device->type == TYPE_TAPE) {
1365 if ((scp->request->timeout / HZ) > 0xFFFF)
1366 pthru->timeout = cpu_to_le16(0xFFFF);
1367 else
1368 pthru->timeout = cpu_to_le16(scp->request->timeout / HZ);
1369 }
1370
1371 /*
1372 * Construct SGL
1373 */
1374 if (instance->flag_ieee == 1) {
1375 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1376 pthru->sge_count = megasas_make_sgl_skinny(instance, scp,
1377 &pthru->sgl);
1378 } else if (IS_DMA64) {
1379 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1380 pthru->sge_count = megasas_make_sgl64(instance, scp,
1381 &pthru->sgl);
1382 } else
1383 pthru->sge_count = megasas_make_sgl32(instance, scp,
1384 &pthru->sgl);
1385
1386 if (pthru->sge_count > instance->max_num_sge) {
1387 dev_err(&instance->pdev->dev, "DCDB too many SGE NUM=%x\n",
1388 pthru->sge_count);
1389 return 0;
1390 }
1391
1392 /*
1393 * Sense info specific
1394 */
1395 pthru->sense_len = SCSI_SENSE_BUFFERSIZE;
1396 pthru->sense_buf_phys_addr_hi =
1397 cpu_to_le32(upper_32_bits(cmd->sense_phys_addr));
1398 pthru->sense_buf_phys_addr_lo =
1399 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr));
1400
1401 /*
1402 * Compute the total number of frames this command consumes. FW uses
1403 * this number to pull sufficient number of frames from host memory.
1404 */
1405 cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count,
1406 PTHRU_FRAME);
1407
1408 return cmd->frame_count;
1409 }
1410
1411 /**
1412 * megasas_build_ldio - Prepares IOs to logical devices
1413 * @instance: Adapter soft state
1414 * @scp: SCSI command
1415 * @cmd: Command to be prepared
1416 *
1417 * Frames (and accompanying SGLs) for regular SCSI IOs use this function.
1418 */
1419 static int
megasas_build_ldio(struct megasas_instance * instance,struct scsi_cmnd * scp,struct megasas_cmd * cmd)1420 megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp,
1421 struct megasas_cmd *cmd)
1422 {
1423 u32 device_id;
1424 u8 sc = scp->cmnd[0];
1425 u16 flags = 0;
1426 struct megasas_io_frame *ldio;
1427
1428 device_id = MEGASAS_DEV_INDEX(scp);
1429 ldio = (struct megasas_io_frame *)cmd->frame;
1430
1431 if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1432 flags = MFI_FRAME_DIR_WRITE;
1433 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1434 flags = MFI_FRAME_DIR_READ;
1435
1436 if (instance->flag_ieee == 1) {
1437 flags |= MFI_FRAME_IEEE;
1438 }
1439
1440 /*
1441 * Prepare the Logical IO frame: 2nd bit is zero for all read cmds
1442 */
1443 ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ;
1444 ldio->cmd_status = 0x0;
1445 ldio->scsi_status = 0x0;
1446 ldio->target_id = device_id;
1447 ldio->timeout = 0;
1448 ldio->reserved_0 = 0;
1449 ldio->pad_0 = 0;
1450 ldio->flags = cpu_to_le16(flags);
1451 ldio->start_lba_hi = 0;
1452 ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0;
1453
1454 /*
1455 * 6-byte READ(0x08) or WRITE(0x0A) cdb
1456 */
1457 if (scp->cmd_len == 6) {
1458 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[4]);
1459 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[1] << 16) |
1460 ((u32) scp->cmnd[2] << 8) |
1461 (u32) scp->cmnd[3]);
1462
1463 ldio->start_lba_lo &= cpu_to_le32(0x1FFFFF);
1464 }
1465
1466 /*
1467 * 10-byte READ(0x28) or WRITE(0x2A) cdb
1468 */
1469 else if (scp->cmd_len == 10) {
1470 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[8] |
1471 ((u32) scp->cmnd[7] << 8));
1472 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1473 ((u32) scp->cmnd[3] << 16) |
1474 ((u32) scp->cmnd[4] << 8) |
1475 (u32) scp->cmnd[5]);
1476 }
1477
1478 /*
1479 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1480 */
1481 else if (scp->cmd_len == 12) {
1482 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1483 ((u32) scp->cmnd[7] << 16) |
1484 ((u32) scp->cmnd[8] << 8) |
1485 (u32) scp->cmnd[9]);
1486
1487 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1488 ((u32) scp->cmnd[3] << 16) |
1489 ((u32) scp->cmnd[4] << 8) |
1490 (u32) scp->cmnd[5]);
1491 }
1492
1493 /*
1494 * 16-byte READ(0x88) or WRITE(0x8A) cdb
1495 */
1496 else if (scp->cmd_len == 16) {
1497 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[10] << 24) |
1498 ((u32) scp->cmnd[11] << 16) |
1499 ((u32) scp->cmnd[12] << 8) |
1500 (u32) scp->cmnd[13]);
1501
1502 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1503 ((u32) scp->cmnd[7] << 16) |
1504 ((u32) scp->cmnd[8] << 8) |
1505 (u32) scp->cmnd[9]);
1506
1507 ldio->start_lba_hi = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1508 ((u32) scp->cmnd[3] << 16) |
1509 ((u32) scp->cmnd[4] << 8) |
1510 (u32) scp->cmnd[5]);
1511
1512 }
1513
1514 /*
1515 * Construct SGL
1516 */
1517 if (instance->flag_ieee) {
1518 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1519 ldio->sge_count = megasas_make_sgl_skinny(instance, scp,
1520 &ldio->sgl);
1521 } else if (IS_DMA64) {
1522 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1523 ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl);
1524 } else
1525 ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl);
1526
1527 if (ldio->sge_count > instance->max_num_sge) {
1528 dev_err(&instance->pdev->dev, "build_ld_io: sge_count = %x\n",
1529 ldio->sge_count);
1530 return 0;
1531 }
1532
1533 /*
1534 * Sense info specific
1535 */
1536 ldio->sense_len = SCSI_SENSE_BUFFERSIZE;
1537 ldio->sense_buf_phys_addr_hi = 0;
1538 ldio->sense_buf_phys_addr_lo = cpu_to_le32(cmd->sense_phys_addr);
1539
1540 /*
1541 * Compute the total number of frames this command consumes. FW uses
1542 * this number to pull sufficient number of frames from host memory.
1543 */
1544 cmd->frame_count = megasas_get_frame_count(instance,
1545 ldio->sge_count, IO_FRAME);
1546
1547 return cmd->frame_count;
1548 }
1549
1550 /**
1551 * megasas_cmd_type - Checks if the cmd is for logical drive/sysPD
1552 * and whether it's RW or non RW
1553 * @scmd: SCSI command
1554 *
1555 */
megasas_cmd_type(struct scsi_cmnd * cmd)1556 inline int megasas_cmd_type(struct scsi_cmnd *cmd)
1557 {
1558 int ret;
1559
1560 switch (cmd->cmnd[0]) {
1561 case READ_10:
1562 case WRITE_10:
1563 case READ_12:
1564 case WRITE_12:
1565 case READ_6:
1566 case WRITE_6:
1567 case READ_16:
1568 case WRITE_16:
1569 ret = (MEGASAS_IS_LOGICAL(cmd->device)) ?
1570 READ_WRITE_LDIO : READ_WRITE_SYSPDIO;
1571 break;
1572 default:
1573 ret = (MEGASAS_IS_LOGICAL(cmd->device)) ?
1574 NON_READ_WRITE_LDIO : NON_READ_WRITE_SYSPDIO;
1575 }
1576 return ret;
1577 }
1578
1579 /**
1580 * megasas_dump_pending_frames - Dumps the frame address of all pending cmds
1581 * in FW
1582 * @instance: Adapter soft state
1583 */
1584 static inline void
megasas_dump_pending_frames(struct megasas_instance * instance)1585 megasas_dump_pending_frames(struct megasas_instance *instance)
1586 {
1587 struct megasas_cmd *cmd;
1588 int i,n;
1589 union megasas_sgl *mfi_sgl;
1590 struct megasas_io_frame *ldio;
1591 struct megasas_pthru_frame *pthru;
1592 u32 sgcount;
1593 u16 max_cmd = instance->max_fw_cmds;
1594
1595 dev_err(&instance->pdev->dev, "[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no);
1596 dev_err(&instance->pdev->dev, "[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding));
1597 if (IS_DMA64)
1598 dev_err(&instance->pdev->dev, "[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no);
1599 else
1600 dev_err(&instance->pdev->dev, "[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no);
1601
1602 dev_err(&instance->pdev->dev, "[%d]: Pending OS cmds in FW : \n",instance->host->host_no);
1603 for (i = 0; i < max_cmd; i++) {
1604 cmd = instance->cmd_list[i];
1605 if (!cmd->scmd)
1606 continue;
1607 dev_err(&instance->pdev->dev, "[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr);
1608 if (megasas_cmd_type(cmd->scmd) == READ_WRITE_LDIO) {
1609 ldio = (struct megasas_io_frame *)cmd->frame;
1610 mfi_sgl = &ldio->sgl;
1611 sgcount = ldio->sge_count;
1612 dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x,"
1613 " lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1614 instance->host->host_no, cmd->frame_count, ldio->cmd, ldio->target_id,
1615 le32_to_cpu(ldio->start_lba_lo), le32_to_cpu(ldio->start_lba_hi),
1616 le32_to_cpu(ldio->sense_buf_phys_addr_lo), sgcount);
1617 } else {
1618 pthru = (struct megasas_pthru_frame *) cmd->frame;
1619 mfi_sgl = &pthru->sgl;
1620 sgcount = pthru->sge_count;
1621 dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, "
1622 "lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1623 instance->host->host_no, cmd->frame_count, pthru->cmd, pthru->target_id,
1624 pthru->lun, pthru->cdb_len, le32_to_cpu(pthru->data_xfer_len),
1625 le32_to_cpu(pthru->sense_buf_phys_addr_lo), sgcount);
1626 }
1627 if (megasas_dbg_lvl & MEGASAS_DBG_LVL) {
1628 for (n = 0; n < sgcount; n++) {
1629 if (IS_DMA64)
1630 dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%llx\n",
1631 le32_to_cpu(mfi_sgl->sge64[n].length),
1632 le64_to_cpu(mfi_sgl->sge64[n].phys_addr));
1633 else
1634 dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%x\n",
1635 le32_to_cpu(mfi_sgl->sge32[n].length),
1636 le32_to_cpu(mfi_sgl->sge32[n].phys_addr));
1637 }
1638 }
1639 } /*for max_cmd*/
1640 dev_err(&instance->pdev->dev, "[%d]: Pending Internal cmds in FW : \n",instance->host->host_no);
1641 for (i = 0; i < max_cmd; i++) {
1642
1643 cmd = instance->cmd_list[i];
1644
1645 if (cmd->sync_cmd == 1)
1646 dev_err(&instance->pdev->dev, "0x%08lx : ", (unsigned long)cmd->frame_phys_addr);
1647 }
1648 dev_err(&instance->pdev->dev, "[%d]: Dumping Done\n\n",instance->host->host_no);
1649 }
1650
1651 u32
megasas_build_and_issue_cmd(struct megasas_instance * instance,struct scsi_cmnd * scmd)1652 megasas_build_and_issue_cmd(struct megasas_instance *instance,
1653 struct scsi_cmnd *scmd)
1654 {
1655 struct megasas_cmd *cmd;
1656 u32 frame_count;
1657
1658 cmd = megasas_get_cmd(instance);
1659 if (!cmd)
1660 return SCSI_MLQUEUE_HOST_BUSY;
1661
1662 /*
1663 * Logical drive command
1664 */
1665 if (megasas_cmd_type(scmd) == READ_WRITE_LDIO)
1666 frame_count = megasas_build_ldio(instance, scmd, cmd);
1667 else
1668 frame_count = megasas_build_dcdb(instance, scmd, cmd);
1669
1670 if (!frame_count)
1671 goto out_return_cmd;
1672
1673 cmd->scmd = scmd;
1674 scmd->SCp.ptr = (char *)cmd;
1675
1676 /*
1677 * Issue the command to the FW
1678 */
1679 atomic_inc(&instance->fw_outstanding);
1680
1681 instance->instancet->fire_cmd(instance, cmd->frame_phys_addr,
1682 cmd->frame_count-1, instance->reg_set);
1683
1684 return 0;
1685 out_return_cmd:
1686 megasas_return_cmd(instance, cmd);
1687 return SCSI_MLQUEUE_HOST_BUSY;
1688 }
1689
1690
1691 /**
1692 * megasas_queue_command - Queue entry point
1693 * @scmd: SCSI command to be queued
1694 * @done: Callback entry point
1695 */
1696 static int
megasas_queue_command(struct Scsi_Host * shost,struct scsi_cmnd * scmd)1697 megasas_queue_command(struct Scsi_Host *shost, struct scsi_cmnd *scmd)
1698 {
1699 struct megasas_instance *instance;
1700 struct MR_PRIV_DEVICE *mr_device_priv_data;
1701
1702 instance = (struct megasas_instance *)
1703 scmd->device->host->hostdata;
1704
1705 if (instance->unload == 1) {
1706 scmd->result = DID_NO_CONNECT << 16;
1707 scmd->scsi_done(scmd);
1708 return 0;
1709 }
1710
1711 if (instance->issuepend_done == 0)
1712 return SCSI_MLQUEUE_HOST_BUSY;
1713
1714
1715 /* Check for an mpio path and adjust behavior */
1716 if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
1717 if (megasas_check_mpio_paths(instance, scmd) ==
1718 (DID_REQUEUE << 16)) {
1719 return SCSI_MLQUEUE_HOST_BUSY;
1720 } else {
1721 scmd->result = DID_NO_CONNECT << 16;
1722 scmd->scsi_done(scmd);
1723 return 0;
1724 }
1725 }
1726
1727 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1728 scmd->result = DID_NO_CONNECT << 16;
1729 scmd->scsi_done(scmd);
1730 return 0;
1731 }
1732
1733 mr_device_priv_data = scmd->device->hostdata;
1734 if (!mr_device_priv_data) {
1735 scmd->result = DID_NO_CONNECT << 16;
1736 scmd->scsi_done(scmd);
1737 return 0;
1738 }
1739
1740 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
1741 return SCSI_MLQUEUE_HOST_BUSY;
1742
1743 if (mr_device_priv_data->tm_busy)
1744 return SCSI_MLQUEUE_DEVICE_BUSY;
1745
1746
1747 scmd->result = 0;
1748
1749 if (MEGASAS_IS_LOGICAL(scmd->device) &&
1750 (scmd->device->id >= instance->fw_supported_vd_count ||
1751 scmd->device->lun)) {
1752 scmd->result = DID_BAD_TARGET << 16;
1753 goto out_done;
1754 }
1755
1756 if ((scmd->cmnd[0] == SYNCHRONIZE_CACHE) &&
1757 MEGASAS_IS_LOGICAL(scmd->device) &&
1758 (!instance->fw_sync_cache_support)) {
1759 scmd->result = DID_OK << 16;
1760 goto out_done;
1761 }
1762
1763 return instance->instancet->build_and_issue_cmd(instance, scmd);
1764
1765 out_done:
1766 scmd->scsi_done(scmd);
1767 return 0;
1768 }
1769
megasas_lookup_instance(u16 host_no)1770 static struct megasas_instance *megasas_lookup_instance(u16 host_no)
1771 {
1772 int i;
1773
1774 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
1775
1776 if ((megasas_mgmt_info.instance[i]) &&
1777 (megasas_mgmt_info.instance[i]->host->host_no == host_no))
1778 return megasas_mgmt_info.instance[i];
1779 }
1780
1781 return NULL;
1782 }
1783
1784 /*
1785 * megasas_set_dynamic_target_properties -
1786 * Device property set by driver may not be static and it is required to be
1787 * updated after OCR
1788 *
1789 * set tm_capable.
1790 * set dma alignment (only for eedp protection enable vd).
1791 *
1792 * @sdev: OS provided scsi device
1793 *
1794 * Returns void
1795 */
megasas_set_dynamic_target_properties(struct scsi_device * sdev,bool is_target_prop)1796 void megasas_set_dynamic_target_properties(struct scsi_device *sdev,
1797 bool is_target_prop)
1798 {
1799 u16 pd_index = 0, ld;
1800 u32 device_id;
1801 struct megasas_instance *instance;
1802 struct fusion_context *fusion;
1803 struct MR_PRIV_DEVICE *mr_device_priv_data;
1804 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
1805 struct MR_LD_RAID *raid;
1806 struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
1807
1808 instance = megasas_lookup_instance(sdev->host->host_no);
1809 fusion = instance->ctrl_context;
1810 mr_device_priv_data = sdev->hostdata;
1811
1812 if (!fusion || !mr_device_priv_data)
1813 return;
1814
1815 if (MEGASAS_IS_LOGICAL(sdev)) {
1816 device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL)
1817 + sdev->id;
1818 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
1819 ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
1820 if (ld >= instance->fw_supported_vd_count)
1821 return;
1822 raid = MR_LdRaidGet(ld, local_map_ptr);
1823
1824 if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER)
1825 blk_queue_update_dma_alignment(sdev->request_queue, 0x7);
1826
1827 mr_device_priv_data->is_tm_capable =
1828 raid->capability.tmCapable;
1829 } else if (instance->use_seqnum_jbod_fp) {
1830 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1831 sdev->id;
1832 pd_sync = (void *)fusion->pd_seq_sync
1833 [(instance->pd_seq_map_id - 1) & 1];
1834 mr_device_priv_data->is_tm_capable =
1835 pd_sync->seq[pd_index].capability.tmCapable;
1836 }
1837
1838 if (is_target_prop && instance->tgt_prop->reset_tmo) {
1839 /*
1840 * If FW provides a target reset timeout value, driver will use
1841 * it. If not set, fallback to default values.
1842 */
1843 mr_device_priv_data->target_reset_tmo =
1844 min_t(u8, instance->max_reset_tmo,
1845 instance->tgt_prop->reset_tmo);
1846 mr_device_priv_data->task_abort_tmo = instance->task_abort_tmo;
1847 } else {
1848 mr_device_priv_data->target_reset_tmo =
1849 MEGASAS_DEFAULT_TM_TIMEOUT;
1850 mr_device_priv_data->task_abort_tmo =
1851 MEGASAS_DEFAULT_TM_TIMEOUT;
1852 }
1853 }
1854
1855 /*
1856 * megasas_set_nvme_device_properties -
1857 * set nomerges=2
1858 * set virtual page boundary = 4K (current mr_nvme_pg_size is 4K).
1859 * set maximum io transfer = MDTS of NVME device provided by MR firmware.
1860 *
1861 * MR firmware provides value in KB. Caller of this function converts
1862 * kb into bytes.
1863 *
1864 * e.a MDTS=5 means 2^5 * nvme page size. (In case of 4K page size,
1865 * MR firmware provides value 128 as (32 * 4K) = 128K.
1866 *
1867 * @sdev: scsi device
1868 * @max_io_size: maximum io transfer size
1869 *
1870 */
1871 static inline void
megasas_set_nvme_device_properties(struct scsi_device * sdev,u32 max_io_size)1872 megasas_set_nvme_device_properties(struct scsi_device *sdev, u32 max_io_size)
1873 {
1874 struct megasas_instance *instance;
1875 u32 mr_nvme_pg_size;
1876
1877 instance = (struct megasas_instance *)sdev->host->hostdata;
1878 mr_nvme_pg_size = max_t(u32, instance->nvme_page_size,
1879 MR_DEFAULT_NVME_PAGE_SIZE);
1880
1881 blk_queue_max_hw_sectors(sdev->request_queue, (max_io_size / 512));
1882
1883 blk_queue_flag_set(QUEUE_FLAG_NOMERGES, sdev->request_queue);
1884 blk_queue_virt_boundary(sdev->request_queue, mr_nvme_pg_size - 1);
1885 }
1886
1887
1888 /*
1889 * megasas_set_static_target_properties -
1890 * Device property set by driver are static and it is not required to be
1891 * updated after OCR.
1892 *
1893 * set io timeout
1894 * set device queue depth
1895 * set nvme device properties. see - megasas_set_nvme_device_properties
1896 *
1897 * @sdev: scsi device
1898 * @is_target_prop true, if fw provided target properties.
1899 */
megasas_set_static_target_properties(struct scsi_device * sdev,bool is_target_prop)1900 static void megasas_set_static_target_properties(struct scsi_device *sdev,
1901 bool is_target_prop)
1902 {
1903 u16 target_index = 0;
1904 u8 interface_type;
1905 u32 device_qd = MEGASAS_DEFAULT_CMD_PER_LUN;
1906 u32 max_io_size_kb = MR_DEFAULT_NVME_MDTS_KB;
1907 u32 tgt_device_qd;
1908 struct megasas_instance *instance;
1909 struct MR_PRIV_DEVICE *mr_device_priv_data;
1910
1911 instance = megasas_lookup_instance(sdev->host->host_no);
1912 mr_device_priv_data = sdev->hostdata;
1913 interface_type = mr_device_priv_data->interface_type;
1914
1915 /*
1916 * The RAID firmware may require extended timeouts.
1917 */
1918 blk_queue_rq_timeout(sdev->request_queue, scmd_timeout * HZ);
1919
1920 target_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + sdev->id;
1921
1922 switch (interface_type) {
1923 case SAS_PD:
1924 device_qd = MEGASAS_SAS_QD;
1925 break;
1926 case SATA_PD:
1927 device_qd = MEGASAS_SATA_QD;
1928 break;
1929 case NVME_PD:
1930 device_qd = MEGASAS_NVME_QD;
1931 break;
1932 }
1933
1934 if (is_target_prop) {
1935 tgt_device_qd = le32_to_cpu(instance->tgt_prop->device_qdepth);
1936 if (tgt_device_qd &&
1937 (tgt_device_qd <= instance->host->can_queue))
1938 device_qd = tgt_device_qd;
1939
1940 /* max_io_size_kb will be set to non zero for
1941 * nvme based vd and syspd.
1942 */
1943 max_io_size_kb = le32_to_cpu(instance->tgt_prop->max_io_size_kb);
1944 }
1945
1946 if (instance->nvme_page_size && max_io_size_kb)
1947 megasas_set_nvme_device_properties(sdev, (max_io_size_kb << 10));
1948
1949 scsi_change_queue_depth(sdev, device_qd);
1950
1951 }
1952
1953
megasas_slave_configure(struct scsi_device * sdev)1954 static int megasas_slave_configure(struct scsi_device *sdev)
1955 {
1956 u16 pd_index = 0;
1957 struct megasas_instance *instance;
1958 int ret_target_prop = DCMD_FAILED;
1959 bool is_target_prop = false;
1960
1961 instance = megasas_lookup_instance(sdev->host->host_no);
1962 if (instance->pd_list_not_supported) {
1963 if (!MEGASAS_IS_LOGICAL(sdev) && sdev->type == TYPE_DISK) {
1964 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1965 sdev->id;
1966 if (instance->pd_list[pd_index].driveState !=
1967 MR_PD_STATE_SYSTEM)
1968 return -ENXIO;
1969 }
1970 }
1971
1972 mutex_lock(&instance->reset_mutex);
1973 /* Send DCMD to Firmware and cache the information */
1974 if ((instance->pd_info) && !MEGASAS_IS_LOGICAL(sdev))
1975 megasas_get_pd_info(instance, sdev);
1976
1977 /* Some ventura firmware may not have instance->nvme_page_size set.
1978 * Do not send MR_DCMD_DRV_GET_TARGET_PROP
1979 */
1980 if ((instance->tgt_prop) && (instance->nvme_page_size))
1981 ret_target_prop = megasas_get_target_prop(instance, sdev);
1982
1983 is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false;
1984 megasas_set_static_target_properties(sdev, is_target_prop);
1985
1986 /* This sdev property may change post OCR */
1987 megasas_set_dynamic_target_properties(sdev, is_target_prop);
1988
1989 mutex_unlock(&instance->reset_mutex);
1990
1991 return 0;
1992 }
1993
megasas_slave_alloc(struct scsi_device * sdev)1994 static int megasas_slave_alloc(struct scsi_device *sdev)
1995 {
1996 u16 pd_index = 0;
1997 struct megasas_instance *instance ;
1998 struct MR_PRIV_DEVICE *mr_device_priv_data;
1999
2000 instance = megasas_lookup_instance(sdev->host->host_no);
2001 if (!MEGASAS_IS_LOGICAL(sdev)) {
2002 /*
2003 * Open the OS scan to the SYSTEM PD
2004 */
2005 pd_index =
2006 (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
2007 sdev->id;
2008 if ((instance->pd_list_not_supported ||
2009 instance->pd_list[pd_index].driveState ==
2010 MR_PD_STATE_SYSTEM)) {
2011 goto scan_target;
2012 }
2013 return -ENXIO;
2014 }
2015
2016 scan_target:
2017 mr_device_priv_data = kzalloc(sizeof(*mr_device_priv_data),
2018 GFP_KERNEL);
2019 if (!mr_device_priv_data)
2020 return -ENOMEM;
2021 sdev->hostdata = mr_device_priv_data;
2022
2023 atomic_set(&mr_device_priv_data->r1_ldio_hint,
2024 instance->r1_ldio_hint_default);
2025 return 0;
2026 }
2027
megasas_slave_destroy(struct scsi_device * sdev)2028 static void megasas_slave_destroy(struct scsi_device *sdev)
2029 {
2030 kfree(sdev->hostdata);
2031 sdev->hostdata = NULL;
2032 }
2033
2034 /*
2035 * megasas_complete_outstanding_ioctls - Complete outstanding ioctls after a
2036 * kill adapter
2037 * @instance: Adapter soft state
2038 *
2039 */
megasas_complete_outstanding_ioctls(struct megasas_instance * instance)2040 static void megasas_complete_outstanding_ioctls(struct megasas_instance *instance)
2041 {
2042 int i;
2043 struct megasas_cmd *cmd_mfi;
2044 struct megasas_cmd_fusion *cmd_fusion;
2045 struct fusion_context *fusion = instance->ctrl_context;
2046
2047 /* Find all outstanding ioctls */
2048 if (fusion) {
2049 for (i = 0; i < instance->max_fw_cmds; i++) {
2050 cmd_fusion = fusion->cmd_list[i];
2051 if (cmd_fusion->sync_cmd_idx != (u32)ULONG_MAX) {
2052 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
2053 if (cmd_mfi->sync_cmd &&
2054 (cmd_mfi->frame->hdr.cmd != MFI_CMD_ABORT)) {
2055 cmd_mfi->frame->hdr.cmd_status =
2056 MFI_STAT_WRONG_STATE;
2057 megasas_complete_cmd(instance,
2058 cmd_mfi, DID_OK);
2059 }
2060 }
2061 }
2062 } else {
2063 for (i = 0; i < instance->max_fw_cmds; i++) {
2064 cmd_mfi = instance->cmd_list[i];
2065 if (cmd_mfi->sync_cmd && cmd_mfi->frame->hdr.cmd !=
2066 MFI_CMD_ABORT)
2067 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
2068 }
2069 }
2070 }
2071
2072
megaraid_sas_kill_hba(struct megasas_instance * instance)2073 void megaraid_sas_kill_hba(struct megasas_instance *instance)
2074 {
2075 /* Set critical error to block I/O & ioctls in case caller didn't */
2076 atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2077 /* Wait 1 second to ensure IO or ioctls in build have posted */
2078 msleep(1000);
2079 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2080 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
2081 (instance->adapter_type != MFI_SERIES)) {
2082 writel(MFI_STOP_ADP, &instance->reg_set->doorbell);
2083 /* Flush */
2084 readl(&instance->reg_set->doorbell);
2085 if (instance->requestorId && instance->peerIsPresent)
2086 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
2087 } else {
2088 writel(MFI_STOP_ADP,
2089 &instance->reg_set->inbound_doorbell);
2090 }
2091 /* Complete outstanding ioctls when adapter is killed */
2092 megasas_complete_outstanding_ioctls(instance);
2093 }
2094
2095 /**
2096 * megasas_check_and_restore_queue_depth - Check if queue depth needs to be
2097 * restored to max value
2098 * @instance: Adapter soft state
2099 *
2100 */
2101 void
megasas_check_and_restore_queue_depth(struct megasas_instance * instance)2102 megasas_check_and_restore_queue_depth(struct megasas_instance *instance)
2103 {
2104 unsigned long flags;
2105
2106 if (instance->flag & MEGASAS_FW_BUSY
2107 && time_after(jiffies, instance->last_time + 5 * HZ)
2108 && atomic_read(&instance->fw_outstanding) <
2109 instance->throttlequeuedepth + 1) {
2110
2111 spin_lock_irqsave(instance->host->host_lock, flags);
2112 instance->flag &= ~MEGASAS_FW_BUSY;
2113
2114 instance->host->can_queue = instance->cur_can_queue;
2115 spin_unlock_irqrestore(instance->host->host_lock, flags);
2116 }
2117 }
2118
2119 /**
2120 * megasas_complete_cmd_dpc - Returns FW's controller structure
2121 * @instance_addr: Address of adapter soft state
2122 *
2123 * Tasklet to complete cmds
2124 */
megasas_complete_cmd_dpc(unsigned long instance_addr)2125 static void megasas_complete_cmd_dpc(unsigned long instance_addr)
2126 {
2127 u32 producer;
2128 u32 consumer;
2129 u32 context;
2130 struct megasas_cmd *cmd;
2131 struct megasas_instance *instance =
2132 (struct megasas_instance *)instance_addr;
2133 unsigned long flags;
2134
2135 /* If we have already declared adapter dead, donot complete cmds */
2136 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
2137 return;
2138
2139 spin_lock_irqsave(&instance->completion_lock, flags);
2140
2141 producer = le32_to_cpu(*instance->producer);
2142 consumer = le32_to_cpu(*instance->consumer);
2143
2144 while (consumer != producer) {
2145 context = le32_to_cpu(instance->reply_queue[consumer]);
2146 if (context >= instance->max_fw_cmds) {
2147 dev_err(&instance->pdev->dev, "Unexpected context value %x\n",
2148 context);
2149 BUG();
2150 }
2151
2152 cmd = instance->cmd_list[context];
2153
2154 megasas_complete_cmd(instance, cmd, DID_OK);
2155
2156 consumer++;
2157 if (consumer == (instance->max_fw_cmds + 1)) {
2158 consumer = 0;
2159 }
2160 }
2161
2162 *instance->consumer = cpu_to_le32(producer);
2163
2164 spin_unlock_irqrestore(&instance->completion_lock, flags);
2165
2166 /*
2167 * Check if we can restore can_queue
2168 */
2169 megasas_check_and_restore_queue_depth(instance);
2170 }
2171
2172 static void megasas_sriov_heartbeat_handler(struct timer_list *t);
2173
2174 /**
2175 * megasas_start_timer - Initializes sriov heartbeat timer object
2176 * @instance: Adapter soft state
2177 *
2178 */
megasas_start_timer(struct megasas_instance * instance)2179 void megasas_start_timer(struct megasas_instance *instance)
2180 {
2181 struct timer_list *timer = &instance->sriov_heartbeat_timer;
2182
2183 timer_setup(timer, megasas_sriov_heartbeat_handler, 0);
2184 timer->expires = jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF;
2185 add_timer(timer);
2186 }
2187
2188 static void
2189 megasas_internal_reset_defer_cmds(struct megasas_instance *instance);
2190
2191 static void
2192 process_fw_state_change_wq(struct work_struct *work);
2193
megasas_do_ocr(struct megasas_instance * instance)2194 void megasas_do_ocr(struct megasas_instance *instance)
2195 {
2196 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
2197 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
2198 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
2199 *instance->consumer = cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
2200 }
2201 instance->instancet->disable_intr(instance);
2202 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
2203 instance->issuepend_done = 0;
2204
2205 atomic_set(&instance->fw_outstanding, 0);
2206 megasas_internal_reset_defer_cmds(instance);
2207 process_fw_state_change_wq(&instance->work_init);
2208 }
2209
megasas_get_ld_vf_affiliation_111(struct megasas_instance * instance,int initial)2210 static int megasas_get_ld_vf_affiliation_111(struct megasas_instance *instance,
2211 int initial)
2212 {
2213 struct megasas_cmd *cmd;
2214 struct megasas_dcmd_frame *dcmd;
2215 struct MR_LD_VF_AFFILIATION_111 *new_affiliation_111 = NULL;
2216 dma_addr_t new_affiliation_111_h;
2217 int ld, retval = 0;
2218 u8 thisVf;
2219
2220 cmd = megasas_get_cmd(instance);
2221
2222 if (!cmd) {
2223 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation_111:"
2224 "Failed to get cmd for scsi%d\n",
2225 instance->host->host_no);
2226 return -ENOMEM;
2227 }
2228
2229 dcmd = &cmd->frame->dcmd;
2230
2231 if (!instance->vf_affiliation_111) {
2232 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2233 "affiliation for scsi%d\n", instance->host->host_no);
2234 megasas_return_cmd(instance, cmd);
2235 return -ENOMEM;
2236 }
2237
2238 if (initial)
2239 memset(instance->vf_affiliation_111, 0,
2240 sizeof(struct MR_LD_VF_AFFILIATION_111));
2241 else {
2242 new_affiliation_111 =
2243 pci_zalloc_consistent(instance->pdev,
2244 sizeof(struct MR_LD_VF_AFFILIATION_111),
2245 &new_affiliation_111_h);
2246 if (!new_affiliation_111) {
2247 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2248 "memory for new affiliation for scsi%d\n",
2249 instance->host->host_no);
2250 megasas_return_cmd(instance, cmd);
2251 return -ENOMEM;
2252 }
2253 }
2254
2255 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2256
2257 dcmd->cmd = MFI_CMD_DCMD;
2258 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2259 dcmd->sge_count = 1;
2260 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2261 dcmd->timeout = 0;
2262 dcmd->pad_0 = 0;
2263 dcmd->data_xfer_len =
2264 cpu_to_le32(sizeof(struct MR_LD_VF_AFFILIATION_111));
2265 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS_111);
2266
2267 if (initial)
2268 dcmd->sgl.sge32[0].phys_addr =
2269 cpu_to_le32(instance->vf_affiliation_111_h);
2270 else
2271 dcmd->sgl.sge32[0].phys_addr =
2272 cpu_to_le32(new_affiliation_111_h);
2273
2274 dcmd->sgl.sge32[0].length = cpu_to_le32(
2275 sizeof(struct MR_LD_VF_AFFILIATION_111));
2276
2277 dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2278 "scsi%d\n", instance->host->host_no);
2279
2280 if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2281 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2282 " failed with status 0x%x for scsi%d\n",
2283 dcmd->cmd_status, instance->host->host_no);
2284 retval = 1; /* Do a scan if we couldn't get affiliation */
2285 goto out;
2286 }
2287
2288 if (!initial) {
2289 thisVf = new_affiliation_111->thisVf;
2290 for (ld = 0 ; ld < new_affiliation_111->vdCount; ld++)
2291 if (instance->vf_affiliation_111->map[ld].policy[thisVf] !=
2292 new_affiliation_111->map[ld].policy[thisVf]) {
2293 dev_warn(&instance->pdev->dev, "SR-IOV: "
2294 "Got new LD/VF affiliation for scsi%d\n",
2295 instance->host->host_no);
2296 memcpy(instance->vf_affiliation_111,
2297 new_affiliation_111,
2298 sizeof(struct MR_LD_VF_AFFILIATION_111));
2299 retval = 1;
2300 goto out;
2301 }
2302 }
2303 out:
2304 if (new_affiliation_111) {
2305 pci_free_consistent(instance->pdev,
2306 sizeof(struct MR_LD_VF_AFFILIATION_111),
2307 new_affiliation_111,
2308 new_affiliation_111_h);
2309 }
2310
2311 megasas_return_cmd(instance, cmd);
2312
2313 return retval;
2314 }
2315
megasas_get_ld_vf_affiliation_12(struct megasas_instance * instance,int initial)2316 static int megasas_get_ld_vf_affiliation_12(struct megasas_instance *instance,
2317 int initial)
2318 {
2319 struct megasas_cmd *cmd;
2320 struct megasas_dcmd_frame *dcmd;
2321 struct MR_LD_VF_AFFILIATION *new_affiliation = NULL;
2322 struct MR_LD_VF_MAP *newmap = NULL, *savedmap = NULL;
2323 dma_addr_t new_affiliation_h;
2324 int i, j, retval = 0, found = 0, doscan = 0;
2325 u8 thisVf;
2326
2327 cmd = megasas_get_cmd(instance);
2328
2329 if (!cmd) {
2330 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation12: "
2331 "Failed to get cmd for scsi%d\n",
2332 instance->host->host_no);
2333 return -ENOMEM;
2334 }
2335
2336 dcmd = &cmd->frame->dcmd;
2337
2338 if (!instance->vf_affiliation) {
2339 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2340 "affiliation for scsi%d\n", instance->host->host_no);
2341 megasas_return_cmd(instance, cmd);
2342 return -ENOMEM;
2343 }
2344
2345 if (initial)
2346 memset(instance->vf_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) *
2347 sizeof(struct MR_LD_VF_AFFILIATION));
2348 else {
2349 new_affiliation =
2350 pci_zalloc_consistent(instance->pdev,
2351 (MAX_LOGICAL_DRIVES + 1) *
2352 sizeof(struct MR_LD_VF_AFFILIATION),
2353 &new_affiliation_h);
2354 if (!new_affiliation) {
2355 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2356 "memory for new affiliation for scsi%d\n",
2357 instance->host->host_no);
2358 megasas_return_cmd(instance, cmd);
2359 return -ENOMEM;
2360 }
2361 }
2362
2363 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2364
2365 dcmd->cmd = MFI_CMD_DCMD;
2366 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2367 dcmd->sge_count = 1;
2368 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2369 dcmd->timeout = 0;
2370 dcmd->pad_0 = 0;
2371 dcmd->data_xfer_len = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2372 sizeof(struct MR_LD_VF_AFFILIATION));
2373 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS);
2374
2375 if (initial)
2376 dcmd->sgl.sge32[0].phys_addr =
2377 cpu_to_le32(instance->vf_affiliation_h);
2378 else
2379 dcmd->sgl.sge32[0].phys_addr =
2380 cpu_to_le32(new_affiliation_h);
2381
2382 dcmd->sgl.sge32[0].length = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2383 sizeof(struct MR_LD_VF_AFFILIATION));
2384
2385 dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2386 "scsi%d\n", instance->host->host_no);
2387
2388
2389 if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2390 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2391 " failed with status 0x%x for scsi%d\n",
2392 dcmd->cmd_status, instance->host->host_no);
2393 retval = 1; /* Do a scan if we couldn't get affiliation */
2394 goto out;
2395 }
2396
2397 if (!initial) {
2398 if (!new_affiliation->ldCount) {
2399 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2400 "affiliation for passive path for scsi%d\n",
2401 instance->host->host_no);
2402 retval = 1;
2403 goto out;
2404 }
2405 newmap = new_affiliation->map;
2406 savedmap = instance->vf_affiliation->map;
2407 thisVf = new_affiliation->thisVf;
2408 for (i = 0 ; i < new_affiliation->ldCount; i++) {
2409 found = 0;
2410 for (j = 0; j < instance->vf_affiliation->ldCount;
2411 j++) {
2412 if (newmap->ref.targetId ==
2413 savedmap->ref.targetId) {
2414 found = 1;
2415 if (newmap->policy[thisVf] !=
2416 savedmap->policy[thisVf]) {
2417 doscan = 1;
2418 goto out;
2419 }
2420 }
2421 savedmap = (struct MR_LD_VF_MAP *)
2422 ((unsigned char *)savedmap +
2423 savedmap->size);
2424 }
2425 if (!found && newmap->policy[thisVf] !=
2426 MR_LD_ACCESS_HIDDEN) {
2427 doscan = 1;
2428 goto out;
2429 }
2430 newmap = (struct MR_LD_VF_MAP *)
2431 ((unsigned char *)newmap + newmap->size);
2432 }
2433
2434 newmap = new_affiliation->map;
2435 savedmap = instance->vf_affiliation->map;
2436
2437 for (i = 0 ; i < instance->vf_affiliation->ldCount; i++) {
2438 found = 0;
2439 for (j = 0 ; j < new_affiliation->ldCount; j++) {
2440 if (savedmap->ref.targetId ==
2441 newmap->ref.targetId) {
2442 found = 1;
2443 if (savedmap->policy[thisVf] !=
2444 newmap->policy[thisVf]) {
2445 doscan = 1;
2446 goto out;
2447 }
2448 }
2449 newmap = (struct MR_LD_VF_MAP *)
2450 ((unsigned char *)newmap +
2451 newmap->size);
2452 }
2453 if (!found && savedmap->policy[thisVf] !=
2454 MR_LD_ACCESS_HIDDEN) {
2455 doscan = 1;
2456 goto out;
2457 }
2458 savedmap = (struct MR_LD_VF_MAP *)
2459 ((unsigned char *)savedmap +
2460 savedmap->size);
2461 }
2462 }
2463 out:
2464 if (doscan) {
2465 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2466 "affiliation for scsi%d\n", instance->host->host_no);
2467 memcpy(instance->vf_affiliation, new_affiliation,
2468 new_affiliation->size);
2469 retval = 1;
2470 }
2471
2472 if (new_affiliation)
2473 pci_free_consistent(instance->pdev,
2474 (MAX_LOGICAL_DRIVES + 1) *
2475 sizeof(struct MR_LD_VF_AFFILIATION),
2476 new_affiliation, new_affiliation_h);
2477 megasas_return_cmd(instance, cmd);
2478
2479 return retval;
2480 }
2481
2482 /* This function will get the current SR-IOV LD/VF affiliation */
megasas_get_ld_vf_affiliation(struct megasas_instance * instance,int initial)2483 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
2484 int initial)
2485 {
2486 int retval;
2487
2488 if (instance->PlasmaFW111)
2489 retval = megasas_get_ld_vf_affiliation_111(instance, initial);
2490 else
2491 retval = megasas_get_ld_vf_affiliation_12(instance, initial);
2492 return retval;
2493 }
2494
2495 /* This function will tell FW to start the SR-IOV heartbeat */
megasas_sriov_start_heartbeat(struct megasas_instance * instance,int initial)2496 int megasas_sriov_start_heartbeat(struct megasas_instance *instance,
2497 int initial)
2498 {
2499 struct megasas_cmd *cmd;
2500 struct megasas_dcmd_frame *dcmd;
2501 int retval = 0;
2502
2503 cmd = megasas_get_cmd(instance);
2504
2505 if (!cmd) {
2506 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_sriov_start_heartbeat: "
2507 "Failed to get cmd for scsi%d\n",
2508 instance->host->host_no);
2509 return -ENOMEM;
2510 }
2511
2512 dcmd = &cmd->frame->dcmd;
2513
2514 if (initial) {
2515 instance->hb_host_mem =
2516 pci_zalloc_consistent(instance->pdev,
2517 sizeof(struct MR_CTRL_HB_HOST_MEM),
2518 &instance->hb_host_mem_h);
2519 if (!instance->hb_host_mem) {
2520 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate"
2521 " memory for heartbeat host memory for scsi%d\n",
2522 instance->host->host_no);
2523 retval = -ENOMEM;
2524 goto out;
2525 }
2526 }
2527
2528 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2529
2530 dcmd->mbox.s[0] = cpu_to_le16(sizeof(struct MR_CTRL_HB_HOST_MEM));
2531 dcmd->cmd = MFI_CMD_DCMD;
2532 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2533 dcmd->sge_count = 1;
2534 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2535 dcmd->timeout = 0;
2536 dcmd->pad_0 = 0;
2537 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_CTRL_HB_HOST_MEM));
2538 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SHARED_HOST_MEM_ALLOC);
2539
2540 megasas_set_dma_settings(instance, dcmd, instance->hb_host_mem_h,
2541 sizeof(struct MR_CTRL_HB_HOST_MEM));
2542
2543 dev_warn(&instance->pdev->dev, "SR-IOV: Starting heartbeat for scsi%d\n",
2544 instance->host->host_no);
2545
2546 if ((instance->adapter_type != MFI_SERIES) &&
2547 !instance->mask_interrupts)
2548 retval = megasas_issue_blocked_cmd(instance, cmd,
2549 MEGASAS_ROUTINE_WAIT_TIME_VF);
2550 else
2551 retval = megasas_issue_polled(instance, cmd);
2552
2553 if (retval) {
2554 dev_warn(&instance->pdev->dev, "SR-IOV: MR_DCMD_CTRL_SHARED_HOST"
2555 "_MEM_ALLOC DCMD %s for scsi%d\n",
2556 (dcmd->cmd_status == MFI_STAT_INVALID_STATUS) ?
2557 "timed out" : "failed", instance->host->host_no);
2558 retval = 1;
2559 }
2560
2561 out:
2562 megasas_return_cmd(instance, cmd);
2563
2564 return retval;
2565 }
2566
2567 /* Handler for SR-IOV heartbeat */
megasas_sriov_heartbeat_handler(struct timer_list * t)2568 static void megasas_sriov_heartbeat_handler(struct timer_list *t)
2569 {
2570 struct megasas_instance *instance =
2571 from_timer(instance, t, sriov_heartbeat_timer);
2572
2573 if (instance->hb_host_mem->HB.fwCounter !=
2574 instance->hb_host_mem->HB.driverCounter) {
2575 instance->hb_host_mem->HB.driverCounter =
2576 instance->hb_host_mem->HB.fwCounter;
2577 mod_timer(&instance->sriov_heartbeat_timer,
2578 jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
2579 } else {
2580 dev_warn(&instance->pdev->dev, "SR-IOV: Heartbeat never "
2581 "completed for scsi%d\n", instance->host->host_no);
2582 schedule_work(&instance->work_init);
2583 }
2584 }
2585
2586 /**
2587 * megasas_wait_for_outstanding - Wait for all outstanding cmds
2588 * @instance: Adapter soft state
2589 *
2590 * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to
2591 * complete all its outstanding commands. Returns error if one or more IOs
2592 * are pending after this time period. It also marks the controller dead.
2593 */
megasas_wait_for_outstanding(struct megasas_instance * instance)2594 static int megasas_wait_for_outstanding(struct megasas_instance *instance)
2595 {
2596 int i, sl, outstanding;
2597 u32 reset_index;
2598 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
2599 unsigned long flags;
2600 struct list_head clist_local;
2601 struct megasas_cmd *reset_cmd;
2602 u32 fw_state;
2603
2604 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2605 dev_info(&instance->pdev->dev, "%s:%d HBA is killed.\n",
2606 __func__, __LINE__);
2607 return FAILED;
2608 }
2609
2610 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2611
2612 INIT_LIST_HEAD(&clist_local);
2613 spin_lock_irqsave(&instance->hba_lock, flags);
2614 list_splice_init(&instance->internal_reset_pending_q,
2615 &clist_local);
2616 spin_unlock_irqrestore(&instance->hba_lock, flags);
2617
2618 dev_notice(&instance->pdev->dev, "HBA reset wait ...\n");
2619 for (i = 0; i < wait_time; i++) {
2620 msleep(1000);
2621 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL)
2622 break;
2623 }
2624
2625 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2626 dev_notice(&instance->pdev->dev, "reset: Stopping HBA.\n");
2627 atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2628 return FAILED;
2629 }
2630
2631 reset_index = 0;
2632 while (!list_empty(&clist_local)) {
2633 reset_cmd = list_entry((&clist_local)->next,
2634 struct megasas_cmd, list);
2635 list_del_init(&reset_cmd->list);
2636 if (reset_cmd->scmd) {
2637 reset_cmd->scmd->result = DID_REQUEUE << 16;
2638 dev_notice(&instance->pdev->dev, "%d:%p reset [%02x]\n",
2639 reset_index, reset_cmd,
2640 reset_cmd->scmd->cmnd[0]);
2641
2642 reset_cmd->scmd->scsi_done(reset_cmd->scmd);
2643 megasas_return_cmd(instance, reset_cmd);
2644 } else if (reset_cmd->sync_cmd) {
2645 dev_notice(&instance->pdev->dev, "%p synch cmds"
2646 "reset queue\n",
2647 reset_cmd);
2648
2649 reset_cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
2650 instance->instancet->fire_cmd(instance,
2651 reset_cmd->frame_phys_addr,
2652 0, instance->reg_set);
2653 } else {
2654 dev_notice(&instance->pdev->dev, "%p unexpected"
2655 "cmds lst\n",
2656 reset_cmd);
2657 }
2658 reset_index++;
2659 }
2660
2661 return SUCCESS;
2662 }
2663
2664 for (i = 0; i < resetwaittime; i++) {
2665 outstanding = atomic_read(&instance->fw_outstanding);
2666
2667 if (!outstanding)
2668 break;
2669
2670 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
2671 dev_notice(&instance->pdev->dev, "[%2d]waiting for %d "
2672 "commands to complete\n",i,outstanding);
2673 /*
2674 * Call cmd completion routine. Cmd to be
2675 * be completed directly without depending on isr.
2676 */
2677 megasas_complete_cmd_dpc((unsigned long)instance);
2678 }
2679
2680 msleep(1000);
2681 }
2682
2683 i = 0;
2684 outstanding = atomic_read(&instance->fw_outstanding);
2685 fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK;
2686
2687 if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2688 goto no_outstanding;
2689
2690 if (instance->disableOnlineCtrlReset)
2691 goto kill_hba_and_failed;
2692 do {
2693 if ((fw_state == MFI_STATE_FAULT) || atomic_read(&instance->fw_outstanding)) {
2694 dev_info(&instance->pdev->dev,
2695 "%s:%d waiting_for_outstanding: before issue OCR. FW state = 0x%x, oustanding 0x%x\n",
2696 __func__, __LINE__, fw_state, atomic_read(&instance->fw_outstanding));
2697 if (i == 3)
2698 goto kill_hba_and_failed;
2699 megasas_do_ocr(instance);
2700
2701 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2702 dev_info(&instance->pdev->dev, "%s:%d OCR failed and HBA is killed.\n",
2703 __func__, __LINE__);
2704 return FAILED;
2705 }
2706 dev_info(&instance->pdev->dev, "%s:%d waiting_for_outstanding: after issue OCR.\n",
2707 __func__, __LINE__);
2708
2709 for (sl = 0; sl < 10; sl++)
2710 msleep(500);
2711
2712 outstanding = atomic_read(&instance->fw_outstanding);
2713
2714 fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK;
2715 if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2716 goto no_outstanding;
2717 }
2718 i++;
2719 } while (i <= 3);
2720
2721 no_outstanding:
2722
2723 dev_info(&instance->pdev->dev, "%s:%d no more pending commands remain after reset handling.\n",
2724 __func__, __LINE__);
2725 return SUCCESS;
2726
2727 kill_hba_and_failed:
2728
2729 /* Reset not supported, kill adapter */
2730 dev_info(&instance->pdev->dev, "%s:%d killing adapter scsi%d"
2731 " disableOnlineCtrlReset %d fw_outstanding %d \n",
2732 __func__, __LINE__, instance->host->host_no, instance->disableOnlineCtrlReset,
2733 atomic_read(&instance->fw_outstanding));
2734 megasas_dump_pending_frames(instance);
2735 megaraid_sas_kill_hba(instance);
2736
2737 return FAILED;
2738 }
2739
2740 /**
2741 * megasas_generic_reset - Generic reset routine
2742 * @scmd: Mid-layer SCSI command
2743 *
2744 * This routine implements a generic reset handler for device, bus and host
2745 * reset requests. Device, bus and host specific reset handlers can use this
2746 * function after they do their specific tasks.
2747 */
megasas_generic_reset(struct scsi_cmnd * scmd)2748 static int megasas_generic_reset(struct scsi_cmnd *scmd)
2749 {
2750 int ret_val;
2751 struct megasas_instance *instance;
2752
2753 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2754
2755 scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n",
2756 scmd->cmnd[0], scmd->retries);
2757
2758 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2759 dev_err(&instance->pdev->dev, "cannot recover from previous reset failures\n");
2760 return FAILED;
2761 }
2762
2763 ret_val = megasas_wait_for_outstanding(instance);
2764 if (ret_val == SUCCESS)
2765 dev_notice(&instance->pdev->dev, "reset successful\n");
2766 else
2767 dev_err(&instance->pdev->dev, "failed to do reset\n");
2768
2769 return ret_val;
2770 }
2771
2772 /**
2773 * megasas_reset_timer - quiesce the adapter if required
2774 * @scmd: scsi cmnd
2775 *
2776 * Sets the FW busy flag and reduces the host->can_queue if the
2777 * cmd has not been completed within the timeout period.
2778 */
2779 static enum
megasas_reset_timer(struct scsi_cmnd * scmd)2780 blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
2781 {
2782 struct megasas_instance *instance;
2783 unsigned long flags;
2784
2785 if (time_after(jiffies, scmd->jiffies_at_alloc +
2786 (scmd_timeout * 2) * HZ)) {
2787 return BLK_EH_DONE;
2788 }
2789
2790 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2791 if (!(instance->flag & MEGASAS_FW_BUSY)) {
2792 /* FW is busy, throttle IO */
2793 spin_lock_irqsave(instance->host->host_lock, flags);
2794
2795 instance->host->can_queue = instance->throttlequeuedepth;
2796 instance->last_time = jiffies;
2797 instance->flag |= MEGASAS_FW_BUSY;
2798
2799 spin_unlock_irqrestore(instance->host->host_lock, flags);
2800 }
2801 return BLK_EH_RESET_TIMER;
2802 }
2803
2804 /**
2805 * megasas_dump_frame - This function will dump MPT/MFI frame
2806 */
2807 static inline void
megasas_dump_frame(void * mpi_request,int sz)2808 megasas_dump_frame(void *mpi_request, int sz)
2809 {
2810 int i;
2811 __le32 *mfp = (__le32 *)mpi_request;
2812
2813 printk(KERN_INFO "IO request frame:\n\t");
2814 for (i = 0; i < sz / sizeof(__le32); i++) {
2815 if (i && ((i % 8) == 0))
2816 printk("\n\t");
2817 printk("%08x ", le32_to_cpu(mfp[i]));
2818 }
2819 printk("\n");
2820 }
2821
2822 /**
2823 * megasas_reset_bus_host - Bus & host reset handler entry point
2824 */
megasas_reset_bus_host(struct scsi_cmnd * scmd)2825 static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
2826 {
2827 int ret;
2828 struct megasas_instance *instance;
2829
2830 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2831
2832 scmd_printk(KERN_INFO, scmd,
2833 "Controller reset is requested due to IO timeout\n"
2834 "SCSI command pointer: (%p)\t SCSI host state: %d\t"
2835 " SCSI host busy: %d\t FW outstanding: %d\n",
2836 scmd, scmd->device->host->shost_state,
2837 scsi_host_busy(scmd->device->host),
2838 atomic_read(&instance->fw_outstanding));
2839
2840 /*
2841 * First wait for all commands to complete
2842 */
2843 if (instance->adapter_type == MFI_SERIES) {
2844 ret = megasas_generic_reset(scmd);
2845 } else {
2846 struct megasas_cmd_fusion *cmd;
2847 cmd = (struct megasas_cmd_fusion *)scmd->SCp.ptr;
2848 if (cmd)
2849 megasas_dump_frame(cmd->io_request,
2850 MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE);
2851 ret = megasas_reset_fusion(scmd->device->host,
2852 SCSIIO_TIMEOUT_OCR);
2853 }
2854
2855 return ret;
2856 }
2857
2858 /**
2859 * megasas_task_abort - Issues task abort request to firmware
2860 * (supported only for fusion adapters)
2861 * @scmd: SCSI command pointer
2862 */
megasas_task_abort(struct scsi_cmnd * scmd)2863 static int megasas_task_abort(struct scsi_cmnd *scmd)
2864 {
2865 int ret;
2866 struct megasas_instance *instance;
2867
2868 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2869
2870 if (instance->adapter_type != MFI_SERIES)
2871 ret = megasas_task_abort_fusion(scmd);
2872 else {
2873 sdev_printk(KERN_NOTICE, scmd->device, "TASK ABORT not supported\n");
2874 ret = FAILED;
2875 }
2876
2877 return ret;
2878 }
2879
2880 /**
2881 * megasas_reset_target: Issues target reset request to firmware
2882 * (supported only for fusion adapters)
2883 * @scmd: SCSI command pointer
2884 */
megasas_reset_target(struct scsi_cmnd * scmd)2885 static int megasas_reset_target(struct scsi_cmnd *scmd)
2886 {
2887 int ret;
2888 struct megasas_instance *instance;
2889
2890 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2891
2892 if (instance->adapter_type != MFI_SERIES)
2893 ret = megasas_reset_target_fusion(scmd);
2894 else {
2895 sdev_printk(KERN_NOTICE, scmd->device, "TARGET RESET not supported\n");
2896 ret = FAILED;
2897 }
2898
2899 return ret;
2900 }
2901
2902 /**
2903 * megasas_bios_param - Returns disk geometry for a disk
2904 * @sdev: device handle
2905 * @bdev: block device
2906 * @capacity: drive capacity
2907 * @geom: geometry parameters
2908 */
2909 static int
megasas_bios_param(struct scsi_device * sdev,struct block_device * bdev,sector_t capacity,int geom[])2910 megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev,
2911 sector_t capacity, int geom[])
2912 {
2913 int heads;
2914 int sectors;
2915 sector_t cylinders;
2916 unsigned long tmp;
2917
2918 /* Default heads (64) & sectors (32) */
2919 heads = 64;
2920 sectors = 32;
2921
2922 tmp = heads * sectors;
2923 cylinders = capacity;
2924
2925 sector_div(cylinders, tmp);
2926
2927 /*
2928 * Handle extended translation size for logical drives > 1Gb
2929 */
2930
2931 if (capacity >= 0x200000) {
2932 heads = 255;
2933 sectors = 63;
2934 tmp = heads*sectors;
2935 cylinders = capacity;
2936 sector_div(cylinders, tmp);
2937 }
2938
2939 geom[0] = heads;
2940 geom[1] = sectors;
2941 geom[2] = cylinders;
2942
2943 return 0;
2944 }
2945
2946 static void megasas_aen_polling(struct work_struct *work);
2947
2948 /**
2949 * megasas_service_aen - Processes an event notification
2950 * @instance: Adapter soft state
2951 * @cmd: AEN command completed by the ISR
2952 *
2953 * For AEN, driver sends a command down to FW that is held by the FW till an
2954 * event occurs. When an event of interest occurs, FW completes the command
2955 * that it was previously holding.
2956 *
2957 * This routines sends SIGIO signal to processes that have registered with the
2958 * driver for AEN.
2959 */
2960 static void
megasas_service_aen(struct megasas_instance * instance,struct megasas_cmd * cmd)2961 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd)
2962 {
2963 unsigned long flags;
2964
2965 /*
2966 * Don't signal app if it is just an aborted previously registered aen
2967 */
2968 if ((!cmd->abort_aen) && (instance->unload == 0)) {
2969 spin_lock_irqsave(&poll_aen_lock, flags);
2970 megasas_poll_wait_aen = 1;
2971 spin_unlock_irqrestore(&poll_aen_lock, flags);
2972 wake_up(&megasas_poll_wait);
2973 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN);
2974 }
2975 else
2976 cmd->abort_aen = 0;
2977
2978 instance->aen_cmd = NULL;
2979
2980 megasas_return_cmd(instance, cmd);
2981
2982 if ((instance->unload == 0) &&
2983 ((instance->issuepend_done == 1))) {
2984 struct megasas_aen_event *ev;
2985
2986 ev = kzalloc(sizeof(*ev), GFP_ATOMIC);
2987 if (!ev) {
2988 dev_err(&instance->pdev->dev, "megasas_service_aen: out of memory\n");
2989 } else {
2990 ev->instance = instance;
2991 instance->ev = ev;
2992 INIT_DELAYED_WORK(&ev->hotplug_work,
2993 megasas_aen_polling);
2994 schedule_delayed_work(&ev->hotplug_work, 0);
2995 }
2996 }
2997 }
2998
2999 static ssize_t
megasas_fw_crash_buffer_store(struct device * cdev,struct device_attribute * attr,const char * buf,size_t count)3000 megasas_fw_crash_buffer_store(struct device *cdev,
3001 struct device_attribute *attr, const char *buf, size_t count)
3002 {
3003 struct Scsi_Host *shost = class_to_shost(cdev);
3004 struct megasas_instance *instance =
3005 (struct megasas_instance *) shost->hostdata;
3006 int val = 0;
3007 unsigned long flags;
3008
3009 if (kstrtoint(buf, 0, &val) != 0)
3010 return -EINVAL;
3011
3012 spin_lock_irqsave(&instance->crashdump_lock, flags);
3013 instance->fw_crash_buffer_offset = val;
3014 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3015 return strlen(buf);
3016 }
3017
3018 static ssize_t
megasas_fw_crash_buffer_show(struct device * cdev,struct device_attribute * attr,char * buf)3019 megasas_fw_crash_buffer_show(struct device *cdev,
3020 struct device_attribute *attr, char *buf)
3021 {
3022 struct Scsi_Host *shost = class_to_shost(cdev);
3023 struct megasas_instance *instance =
3024 (struct megasas_instance *) shost->hostdata;
3025 u32 size;
3026 unsigned long buff_addr;
3027 unsigned long dmachunk = CRASH_DMA_BUF_SIZE;
3028 unsigned long src_addr;
3029 unsigned long flags;
3030 u32 buff_offset;
3031
3032 spin_lock_irqsave(&instance->crashdump_lock, flags);
3033 buff_offset = instance->fw_crash_buffer_offset;
3034 if (!instance->crash_dump_buf &&
3035 !((instance->fw_crash_state == AVAILABLE) ||
3036 (instance->fw_crash_state == COPYING))) {
3037 dev_err(&instance->pdev->dev,
3038 "Firmware crash dump is not available\n");
3039 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3040 return -EINVAL;
3041 }
3042
3043 buff_addr = (unsigned long) buf;
3044
3045 if (buff_offset > (instance->fw_crash_buffer_size * dmachunk)) {
3046 dev_err(&instance->pdev->dev,
3047 "Firmware crash dump offset is out of range\n");
3048 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3049 return 0;
3050 }
3051
3052 size = (instance->fw_crash_buffer_size * dmachunk) - buff_offset;
3053 size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size;
3054
3055 src_addr = (unsigned long)instance->crash_buf[buff_offset / dmachunk] +
3056 (buff_offset % dmachunk);
3057 memcpy(buf, (void *)src_addr, size);
3058 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3059
3060 return size;
3061 }
3062
3063 static ssize_t
megasas_fw_crash_buffer_size_show(struct device * cdev,struct device_attribute * attr,char * buf)3064 megasas_fw_crash_buffer_size_show(struct device *cdev,
3065 struct device_attribute *attr, char *buf)
3066 {
3067 struct Scsi_Host *shost = class_to_shost(cdev);
3068 struct megasas_instance *instance =
3069 (struct megasas_instance *) shost->hostdata;
3070
3071 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)
3072 ((instance->fw_crash_buffer_size) * 1024 * 1024)/PAGE_SIZE);
3073 }
3074
3075 static ssize_t
megasas_fw_crash_state_store(struct device * cdev,struct device_attribute * attr,const char * buf,size_t count)3076 megasas_fw_crash_state_store(struct device *cdev,
3077 struct device_attribute *attr, const char *buf, size_t count)
3078 {
3079 struct Scsi_Host *shost = class_to_shost(cdev);
3080 struct megasas_instance *instance =
3081 (struct megasas_instance *) shost->hostdata;
3082 int val = 0;
3083 unsigned long flags;
3084
3085 if (kstrtoint(buf, 0, &val) != 0)
3086 return -EINVAL;
3087
3088 if ((val <= AVAILABLE || val > COPY_ERROR)) {
3089 dev_err(&instance->pdev->dev, "application updates invalid "
3090 "firmware crash state\n");
3091 return -EINVAL;
3092 }
3093
3094 instance->fw_crash_state = val;
3095
3096 if ((val == COPIED) || (val == COPY_ERROR)) {
3097 spin_lock_irqsave(&instance->crashdump_lock, flags);
3098 megasas_free_host_crash_buffer(instance);
3099 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3100 if (val == COPY_ERROR)
3101 dev_info(&instance->pdev->dev, "application failed to "
3102 "copy Firmware crash dump\n");
3103 else
3104 dev_info(&instance->pdev->dev, "Firmware crash dump "
3105 "copied successfully\n");
3106 }
3107 return strlen(buf);
3108 }
3109
3110 static ssize_t
megasas_fw_crash_state_show(struct device * cdev,struct device_attribute * attr,char * buf)3111 megasas_fw_crash_state_show(struct device *cdev,
3112 struct device_attribute *attr, char *buf)
3113 {
3114 struct Scsi_Host *shost = class_to_shost(cdev);
3115 struct megasas_instance *instance =
3116 (struct megasas_instance *) shost->hostdata;
3117
3118 return snprintf(buf, PAGE_SIZE, "%d\n", instance->fw_crash_state);
3119 }
3120
3121 static ssize_t
megasas_page_size_show(struct device * cdev,struct device_attribute * attr,char * buf)3122 megasas_page_size_show(struct device *cdev,
3123 struct device_attribute *attr, char *buf)
3124 {
3125 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)PAGE_SIZE - 1);
3126 }
3127
3128 static ssize_t
megasas_ldio_outstanding_show(struct device * cdev,struct device_attribute * attr,char * buf)3129 megasas_ldio_outstanding_show(struct device *cdev, struct device_attribute *attr,
3130 char *buf)
3131 {
3132 struct Scsi_Host *shost = class_to_shost(cdev);
3133 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3134
3135 return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->ldio_outstanding));
3136 }
3137
3138 static ssize_t
megasas_fw_cmds_outstanding_show(struct device * cdev,struct device_attribute * attr,char * buf)3139 megasas_fw_cmds_outstanding_show(struct device *cdev,
3140 struct device_attribute *attr, char *buf)
3141 {
3142 struct Scsi_Host *shost = class_to_shost(cdev);
3143 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3144
3145 return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->fw_outstanding));
3146 }
3147
3148 static DEVICE_ATTR(fw_crash_buffer, S_IRUGO | S_IWUSR,
3149 megasas_fw_crash_buffer_show, megasas_fw_crash_buffer_store);
3150 static DEVICE_ATTR(fw_crash_buffer_size, S_IRUGO,
3151 megasas_fw_crash_buffer_size_show, NULL);
3152 static DEVICE_ATTR(fw_crash_state, S_IRUGO | S_IWUSR,
3153 megasas_fw_crash_state_show, megasas_fw_crash_state_store);
3154 static DEVICE_ATTR(page_size, S_IRUGO,
3155 megasas_page_size_show, NULL);
3156 static DEVICE_ATTR(ldio_outstanding, S_IRUGO,
3157 megasas_ldio_outstanding_show, NULL);
3158 static DEVICE_ATTR(fw_cmds_outstanding, S_IRUGO,
3159 megasas_fw_cmds_outstanding_show, NULL);
3160
3161 struct device_attribute *megaraid_host_attrs[] = {
3162 &dev_attr_fw_crash_buffer_size,
3163 &dev_attr_fw_crash_buffer,
3164 &dev_attr_fw_crash_state,
3165 &dev_attr_page_size,
3166 &dev_attr_ldio_outstanding,
3167 &dev_attr_fw_cmds_outstanding,
3168 NULL,
3169 };
3170
3171 /*
3172 * Scsi host template for megaraid_sas driver
3173 */
3174 static struct scsi_host_template megasas_template = {
3175
3176 .module = THIS_MODULE,
3177 .name = "Avago SAS based MegaRAID driver",
3178 .proc_name = "megaraid_sas",
3179 .slave_configure = megasas_slave_configure,
3180 .slave_alloc = megasas_slave_alloc,
3181 .slave_destroy = megasas_slave_destroy,
3182 .queuecommand = megasas_queue_command,
3183 .eh_target_reset_handler = megasas_reset_target,
3184 .eh_abort_handler = megasas_task_abort,
3185 .eh_host_reset_handler = megasas_reset_bus_host,
3186 .eh_timed_out = megasas_reset_timer,
3187 .shost_attrs = megaraid_host_attrs,
3188 .bios_param = megasas_bios_param,
3189 .use_clustering = ENABLE_CLUSTERING,
3190 .change_queue_depth = scsi_change_queue_depth,
3191 .no_write_same = 1,
3192 };
3193
3194 /**
3195 * megasas_complete_int_cmd - Completes an internal command
3196 * @instance: Adapter soft state
3197 * @cmd: Command to be completed
3198 *
3199 * The megasas_issue_blocked_cmd() function waits for a command to complete
3200 * after it issues a command. This function wakes up that waiting routine by
3201 * calling wake_up() on the wait queue.
3202 */
3203 static void
megasas_complete_int_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd)3204 megasas_complete_int_cmd(struct megasas_instance *instance,
3205 struct megasas_cmd *cmd)
3206 {
3207 cmd->cmd_status_drv = cmd->frame->io.cmd_status;
3208 wake_up(&instance->int_cmd_wait_q);
3209 }
3210
3211 /**
3212 * megasas_complete_abort - Completes aborting a command
3213 * @instance: Adapter soft state
3214 * @cmd: Cmd that was issued to abort another cmd
3215 *
3216 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q
3217 * after it issues an abort on a previously issued command. This function
3218 * wakes up all functions waiting on the same wait queue.
3219 */
3220 static void
megasas_complete_abort(struct megasas_instance * instance,struct megasas_cmd * cmd)3221 megasas_complete_abort(struct megasas_instance *instance,
3222 struct megasas_cmd *cmd)
3223 {
3224 if (cmd->sync_cmd) {
3225 cmd->sync_cmd = 0;
3226 cmd->cmd_status_drv = 0;
3227 wake_up(&instance->abort_cmd_wait_q);
3228 }
3229 }
3230
3231 /**
3232 * megasas_complete_cmd - Completes a command
3233 * @instance: Adapter soft state
3234 * @cmd: Command to be completed
3235 * @alt_status: If non-zero, use this value as status to
3236 * SCSI mid-layer instead of the value returned
3237 * by the FW. This should be used if caller wants
3238 * an alternate status (as in the case of aborted
3239 * commands)
3240 */
3241 void
megasas_complete_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd,u8 alt_status)3242 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
3243 u8 alt_status)
3244 {
3245 int exception = 0;
3246 struct megasas_header *hdr = &cmd->frame->hdr;
3247 unsigned long flags;
3248 struct fusion_context *fusion = instance->ctrl_context;
3249 u32 opcode, status;
3250
3251 /* flag for the retry reset */
3252 cmd->retry_for_fw_reset = 0;
3253
3254 if (cmd->scmd)
3255 cmd->scmd->SCp.ptr = NULL;
3256
3257 switch (hdr->cmd) {
3258 case MFI_CMD_INVALID:
3259 /* Some older 1068 controller FW may keep a pended
3260 MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel
3261 when booting the kdump kernel. Ignore this command to
3262 prevent a kernel panic on shutdown of the kdump kernel. */
3263 dev_warn(&instance->pdev->dev, "MFI_CMD_INVALID command "
3264 "completed\n");
3265 dev_warn(&instance->pdev->dev, "If you have a controller "
3266 "other than PERC5, please upgrade your firmware\n");
3267 break;
3268 case MFI_CMD_PD_SCSI_IO:
3269 case MFI_CMD_LD_SCSI_IO:
3270
3271 /*
3272 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been
3273 * issued either through an IO path or an IOCTL path. If it
3274 * was via IOCTL, we will send it to internal completion.
3275 */
3276 if (cmd->sync_cmd) {
3277 cmd->sync_cmd = 0;
3278 megasas_complete_int_cmd(instance, cmd);
3279 break;
3280 }
3281
3282 case MFI_CMD_LD_READ:
3283 case MFI_CMD_LD_WRITE:
3284
3285 if (alt_status) {
3286 cmd->scmd->result = alt_status << 16;
3287 exception = 1;
3288 }
3289
3290 if (exception) {
3291
3292 atomic_dec(&instance->fw_outstanding);
3293
3294 scsi_dma_unmap(cmd->scmd);
3295 cmd->scmd->scsi_done(cmd->scmd);
3296 megasas_return_cmd(instance, cmd);
3297
3298 break;
3299 }
3300
3301 switch (hdr->cmd_status) {
3302
3303 case MFI_STAT_OK:
3304 cmd->scmd->result = DID_OK << 16;
3305 break;
3306
3307 case MFI_STAT_SCSI_IO_FAILED:
3308 case MFI_STAT_LD_INIT_IN_PROGRESS:
3309 cmd->scmd->result =
3310 (DID_ERROR << 16) | hdr->scsi_status;
3311 break;
3312
3313 case MFI_STAT_SCSI_DONE_WITH_ERROR:
3314
3315 cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status;
3316
3317 if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) {
3318 memset(cmd->scmd->sense_buffer, 0,
3319 SCSI_SENSE_BUFFERSIZE);
3320 memcpy(cmd->scmd->sense_buffer, cmd->sense,
3321 hdr->sense_len);
3322
3323 cmd->scmd->result |= DRIVER_SENSE << 24;
3324 }
3325
3326 break;
3327
3328 case MFI_STAT_LD_OFFLINE:
3329 case MFI_STAT_DEVICE_NOT_FOUND:
3330 cmd->scmd->result = DID_BAD_TARGET << 16;
3331 break;
3332
3333 default:
3334 dev_printk(KERN_DEBUG, &instance->pdev->dev, "MFI FW status %#x\n",
3335 hdr->cmd_status);
3336 cmd->scmd->result = DID_ERROR << 16;
3337 break;
3338 }
3339
3340 atomic_dec(&instance->fw_outstanding);
3341
3342 scsi_dma_unmap(cmd->scmd);
3343 cmd->scmd->scsi_done(cmd->scmd);
3344 megasas_return_cmd(instance, cmd);
3345
3346 break;
3347
3348 case MFI_CMD_SMP:
3349 case MFI_CMD_STP:
3350 case MFI_CMD_NVME:
3351 megasas_complete_int_cmd(instance, cmd);
3352 break;
3353
3354 case MFI_CMD_DCMD:
3355 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
3356 /* Check for LD map update */
3357 if ((opcode == MR_DCMD_LD_MAP_GET_INFO)
3358 && (cmd->frame->dcmd.mbox.b[1] == 1)) {
3359 fusion->fast_path_io = 0;
3360 spin_lock_irqsave(instance->host->host_lock, flags);
3361 status = cmd->frame->hdr.cmd_status;
3362 instance->map_update_cmd = NULL;
3363 if (status != MFI_STAT_OK) {
3364 if (status != MFI_STAT_NOT_FOUND)
3365 dev_warn(&instance->pdev->dev, "map syncfailed, status = 0x%x\n",
3366 cmd->frame->hdr.cmd_status);
3367 else {
3368 megasas_return_cmd(instance, cmd);
3369 spin_unlock_irqrestore(
3370 instance->host->host_lock,
3371 flags);
3372 break;
3373 }
3374 }
3375
3376 megasas_return_cmd(instance, cmd);
3377
3378 /*
3379 * Set fast path IO to ZERO.
3380 * Validate Map will set proper value.
3381 * Meanwhile all IOs will go as LD IO.
3382 */
3383 if (status == MFI_STAT_OK &&
3384 (MR_ValidateMapInfo(instance, (instance->map_id + 1)))) {
3385 instance->map_id++;
3386 fusion->fast_path_io = 1;
3387 } else {
3388 fusion->fast_path_io = 0;
3389 }
3390
3391 megasas_sync_map_info(instance);
3392 spin_unlock_irqrestore(instance->host->host_lock,
3393 flags);
3394 break;
3395 }
3396 if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO ||
3397 opcode == MR_DCMD_CTRL_EVENT_GET) {
3398 spin_lock_irqsave(&poll_aen_lock, flags);
3399 megasas_poll_wait_aen = 0;
3400 spin_unlock_irqrestore(&poll_aen_lock, flags);
3401 }
3402
3403 /* FW has an updated PD sequence */
3404 if ((opcode == MR_DCMD_SYSTEM_PD_MAP_GET_INFO) &&
3405 (cmd->frame->dcmd.mbox.b[0] == 1)) {
3406
3407 spin_lock_irqsave(instance->host->host_lock, flags);
3408 status = cmd->frame->hdr.cmd_status;
3409 instance->jbod_seq_cmd = NULL;
3410 megasas_return_cmd(instance, cmd);
3411
3412 if (status == MFI_STAT_OK) {
3413 instance->pd_seq_map_id++;
3414 /* Re-register a pd sync seq num cmd */
3415 if (megasas_sync_pd_seq_num(instance, true))
3416 instance->use_seqnum_jbod_fp = false;
3417 } else
3418 instance->use_seqnum_jbod_fp = false;
3419
3420 spin_unlock_irqrestore(instance->host->host_lock, flags);
3421 break;
3422 }
3423
3424 /*
3425 * See if got an event notification
3426 */
3427 if (opcode == MR_DCMD_CTRL_EVENT_WAIT)
3428 megasas_service_aen(instance, cmd);
3429 else
3430 megasas_complete_int_cmd(instance, cmd);
3431
3432 break;
3433
3434 case MFI_CMD_ABORT:
3435 /*
3436 * Cmd issued to abort another cmd returned
3437 */
3438 megasas_complete_abort(instance, cmd);
3439 break;
3440
3441 default:
3442 dev_info(&instance->pdev->dev, "Unknown command completed! [0x%X]\n",
3443 hdr->cmd);
3444 megasas_complete_int_cmd(instance, cmd);
3445 break;
3446 }
3447 }
3448
3449 /**
3450 * megasas_issue_pending_cmds_again - issue all pending cmds
3451 * in FW again because of the fw reset
3452 * @instance: Adapter soft state
3453 */
3454 static inline void
megasas_issue_pending_cmds_again(struct megasas_instance * instance)3455 megasas_issue_pending_cmds_again(struct megasas_instance *instance)
3456 {
3457 struct megasas_cmd *cmd;
3458 struct list_head clist_local;
3459 union megasas_evt_class_locale class_locale;
3460 unsigned long flags;
3461 u32 seq_num;
3462
3463 INIT_LIST_HEAD(&clist_local);
3464 spin_lock_irqsave(&instance->hba_lock, flags);
3465 list_splice_init(&instance->internal_reset_pending_q, &clist_local);
3466 spin_unlock_irqrestore(&instance->hba_lock, flags);
3467
3468 while (!list_empty(&clist_local)) {
3469 cmd = list_entry((&clist_local)->next,
3470 struct megasas_cmd, list);
3471 list_del_init(&cmd->list);
3472
3473 if (cmd->sync_cmd || cmd->scmd) {
3474 dev_notice(&instance->pdev->dev, "command %p, %p:%d"
3475 "detected to be pending while HBA reset\n",
3476 cmd, cmd->scmd, cmd->sync_cmd);
3477
3478 cmd->retry_for_fw_reset++;
3479
3480 if (cmd->retry_for_fw_reset == 3) {
3481 dev_notice(&instance->pdev->dev, "cmd %p, %p:%d"
3482 "was tried multiple times during reset."
3483 "Shutting down the HBA\n",
3484 cmd, cmd->scmd, cmd->sync_cmd);
3485 instance->instancet->disable_intr(instance);
3486 atomic_set(&instance->fw_reset_no_pci_access, 1);
3487 megaraid_sas_kill_hba(instance);
3488 return;
3489 }
3490 }
3491
3492 if (cmd->sync_cmd == 1) {
3493 if (cmd->scmd) {
3494 dev_notice(&instance->pdev->dev, "unexpected"
3495 "cmd attached to internal command!\n");
3496 }
3497 dev_notice(&instance->pdev->dev, "%p synchronous cmd"
3498 "on the internal reset queue,"
3499 "issue it again.\n", cmd);
3500 cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
3501 instance->instancet->fire_cmd(instance,
3502 cmd->frame_phys_addr,
3503 0, instance->reg_set);
3504 } else if (cmd->scmd) {
3505 dev_notice(&instance->pdev->dev, "%p scsi cmd [%02x]"
3506 "detected on the internal queue, issue again.\n",
3507 cmd, cmd->scmd->cmnd[0]);
3508
3509 atomic_inc(&instance->fw_outstanding);
3510 instance->instancet->fire_cmd(instance,
3511 cmd->frame_phys_addr,
3512 cmd->frame_count-1, instance->reg_set);
3513 } else {
3514 dev_notice(&instance->pdev->dev, "%p unexpected cmd on the"
3515 "internal reset defer list while re-issue!!\n",
3516 cmd);
3517 }
3518 }
3519
3520 if (instance->aen_cmd) {
3521 dev_notice(&instance->pdev->dev, "aen_cmd in def process\n");
3522 megasas_return_cmd(instance, instance->aen_cmd);
3523
3524 instance->aen_cmd = NULL;
3525 }
3526
3527 /*
3528 * Initiate AEN (Asynchronous Event Notification)
3529 */
3530 seq_num = instance->last_seq_num;
3531 class_locale.members.reserved = 0;
3532 class_locale.members.locale = MR_EVT_LOCALE_ALL;
3533 class_locale.members.class = MR_EVT_CLASS_DEBUG;
3534
3535 megasas_register_aen(instance, seq_num, class_locale.word);
3536 }
3537
3538 /**
3539 * Move the internal reset pending commands to a deferred queue.
3540 *
3541 * We move the commands pending at internal reset time to a
3542 * pending queue. This queue would be flushed after successful
3543 * completion of the internal reset sequence. if the internal reset
3544 * did not complete in time, the kernel reset handler would flush
3545 * these commands.
3546 **/
3547 static void
megasas_internal_reset_defer_cmds(struct megasas_instance * instance)3548 megasas_internal_reset_defer_cmds(struct megasas_instance *instance)
3549 {
3550 struct megasas_cmd *cmd;
3551 int i;
3552 u16 max_cmd = instance->max_fw_cmds;
3553 u32 defer_index;
3554 unsigned long flags;
3555
3556 defer_index = 0;
3557 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
3558 for (i = 0; i < max_cmd; i++) {
3559 cmd = instance->cmd_list[i];
3560 if (cmd->sync_cmd == 1 || cmd->scmd) {
3561 dev_notice(&instance->pdev->dev, "moving cmd[%d]:%p:%d:%p"
3562 "on the defer queue as internal\n",
3563 defer_index, cmd, cmd->sync_cmd, cmd->scmd);
3564
3565 if (!list_empty(&cmd->list)) {
3566 dev_notice(&instance->pdev->dev, "ERROR while"
3567 " moving this cmd:%p, %d %p, it was"
3568 "discovered on some list?\n",
3569 cmd, cmd->sync_cmd, cmd->scmd);
3570
3571 list_del_init(&cmd->list);
3572 }
3573 defer_index++;
3574 list_add_tail(&cmd->list,
3575 &instance->internal_reset_pending_q);
3576 }
3577 }
3578 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
3579 }
3580
3581
3582 static void
process_fw_state_change_wq(struct work_struct * work)3583 process_fw_state_change_wq(struct work_struct *work)
3584 {
3585 struct megasas_instance *instance =
3586 container_of(work, struct megasas_instance, work_init);
3587 u32 wait;
3588 unsigned long flags;
3589
3590 if (atomic_read(&instance->adprecovery) != MEGASAS_ADPRESET_SM_INFAULT) {
3591 dev_notice(&instance->pdev->dev, "error, recovery st %x\n",
3592 atomic_read(&instance->adprecovery));
3593 return ;
3594 }
3595
3596 if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
3597 dev_notice(&instance->pdev->dev, "FW detected to be in fault"
3598 "state, restarting it...\n");
3599
3600 instance->instancet->disable_intr(instance);
3601 atomic_set(&instance->fw_outstanding, 0);
3602
3603 atomic_set(&instance->fw_reset_no_pci_access, 1);
3604 instance->instancet->adp_reset(instance, instance->reg_set);
3605 atomic_set(&instance->fw_reset_no_pci_access, 0);
3606
3607 dev_notice(&instance->pdev->dev, "FW restarted successfully,"
3608 "initiating next stage...\n");
3609
3610 dev_notice(&instance->pdev->dev, "HBA recovery state machine,"
3611 "state 2 starting...\n");
3612
3613 /* waiting for about 20 second before start the second init */
3614 for (wait = 0; wait < 30; wait++) {
3615 msleep(1000);
3616 }
3617
3618 if (megasas_transition_to_ready(instance, 1)) {
3619 dev_notice(&instance->pdev->dev, "adapter not ready\n");
3620
3621 atomic_set(&instance->fw_reset_no_pci_access, 1);
3622 megaraid_sas_kill_hba(instance);
3623 return ;
3624 }
3625
3626 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
3627 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
3628 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)
3629 ) {
3630 *instance->consumer = *instance->producer;
3631 } else {
3632 *instance->consumer = 0;
3633 *instance->producer = 0;
3634 }
3635
3636 megasas_issue_init_mfi(instance);
3637
3638 spin_lock_irqsave(&instance->hba_lock, flags);
3639 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
3640 spin_unlock_irqrestore(&instance->hba_lock, flags);
3641 instance->instancet->enable_intr(instance);
3642
3643 megasas_issue_pending_cmds_again(instance);
3644 instance->issuepend_done = 1;
3645 }
3646 }
3647
3648 /**
3649 * megasas_deplete_reply_queue - Processes all completed commands
3650 * @instance: Adapter soft state
3651 * @alt_status: Alternate status to be returned to
3652 * SCSI mid-layer instead of the status
3653 * returned by the FW
3654 * Note: this must be called with hba lock held
3655 */
3656 static int
megasas_deplete_reply_queue(struct megasas_instance * instance,u8 alt_status)3657 megasas_deplete_reply_queue(struct megasas_instance *instance,
3658 u8 alt_status)
3659 {
3660 u32 mfiStatus;
3661 u32 fw_state;
3662
3663 if ((mfiStatus = instance->instancet->check_reset(instance,
3664 instance->reg_set)) == 1) {
3665 return IRQ_HANDLED;
3666 }
3667
3668 if ((mfiStatus = instance->instancet->clear_intr(
3669 instance->reg_set)
3670 ) == 0) {
3671 /* Hardware may not set outbound_intr_status in MSI-X mode */
3672 if (!instance->msix_vectors)
3673 return IRQ_NONE;
3674 }
3675
3676 instance->mfiStatus = mfiStatus;
3677
3678 if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) {
3679 fw_state = instance->instancet->read_fw_status_reg(
3680 instance->reg_set) & MFI_STATE_MASK;
3681
3682 if (fw_state != MFI_STATE_FAULT) {
3683 dev_notice(&instance->pdev->dev, "fw state:%x\n",
3684 fw_state);
3685 }
3686
3687 if ((fw_state == MFI_STATE_FAULT) &&
3688 (instance->disableOnlineCtrlReset == 0)) {
3689 dev_notice(&instance->pdev->dev, "wait adp restart\n");
3690
3691 if ((instance->pdev->device ==
3692 PCI_DEVICE_ID_LSI_SAS1064R) ||
3693 (instance->pdev->device ==
3694 PCI_DEVICE_ID_DELL_PERC5) ||
3695 (instance->pdev->device ==
3696 PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
3697
3698 *instance->consumer =
3699 cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
3700 }
3701
3702
3703 instance->instancet->disable_intr(instance);
3704 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
3705 instance->issuepend_done = 0;
3706
3707 atomic_set(&instance->fw_outstanding, 0);
3708 megasas_internal_reset_defer_cmds(instance);
3709
3710 dev_notice(&instance->pdev->dev, "fwState=%x, stage:%d\n",
3711 fw_state, atomic_read(&instance->adprecovery));
3712
3713 schedule_work(&instance->work_init);
3714 return IRQ_HANDLED;
3715
3716 } else {
3717 dev_notice(&instance->pdev->dev, "fwstate:%x, dis_OCR=%x\n",
3718 fw_state, instance->disableOnlineCtrlReset);
3719 }
3720 }
3721
3722 tasklet_schedule(&instance->isr_tasklet);
3723 return IRQ_HANDLED;
3724 }
3725 /**
3726 * megasas_isr - isr entry point
3727 */
megasas_isr(int irq,void * devp)3728 static irqreturn_t megasas_isr(int irq, void *devp)
3729 {
3730 struct megasas_irq_context *irq_context = devp;
3731 struct megasas_instance *instance = irq_context->instance;
3732 unsigned long flags;
3733 irqreturn_t rc;
3734
3735 if (atomic_read(&instance->fw_reset_no_pci_access))
3736 return IRQ_HANDLED;
3737
3738 spin_lock_irqsave(&instance->hba_lock, flags);
3739 rc = megasas_deplete_reply_queue(instance, DID_OK);
3740 spin_unlock_irqrestore(&instance->hba_lock, flags);
3741
3742 return rc;
3743 }
3744
3745 /**
3746 * megasas_transition_to_ready - Move the FW to READY state
3747 * @instance: Adapter soft state
3748 *
3749 * During the initialization, FW passes can potentially be in any one of
3750 * several possible states. If the FW in operational, waiting-for-handshake
3751 * states, driver must take steps to bring it to ready state. Otherwise, it
3752 * has to wait for the ready state.
3753 */
3754 int
megasas_transition_to_ready(struct megasas_instance * instance,int ocr)3755 megasas_transition_to_ready(struct megasas_instance *instance, int ocr)
3756 {
3757 int i;
3758 u8 max_wait;
3759 u32 fw_state;
3760 u32 cur_state;
3761 u32 abs_state, curr_abs_state;
3762
3763 abs_state = instance->instancet->read_fw_status_reg(instance->reg_set);
3764 fw_state = abs_state & MFI_STATE_MASK;
3765
3766 if (fw_state != MFI_STATE_READY)
3767 dev_info(&instance->pdev->dev, "Waiting for FW to come to ready"
3768 " state\n");
3769
3770 while (fw_state != MFI_STATE_READY) {
3771
3772 switch (fw_state) {
3773
3774 case MFI_STATE_FAULT:
3775 dev_printk(KERN_DEBUG, &instance->pdev->dev, "FW in FAULT state!!\n");
3776 if (ocr) {
3777 max_wait = MEGASAS_RESET_WAIT_TIME;
3778 cur_state = MFI_STATE_FAULT;
3779 break;
3780 } else
3781 return -ENODEV;
3782
3783 case MFI_STATE_WAIT_HANDSHAKE:
3784 /*
3785 * Set the CLR bit in inbound doorbell
3786 */
3787 if ((instance->pdev->device ==
3788 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3789 (instance->pdev->device ==
3790 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3791 (instance->adapter_type != MFI_SERIES))
3792 writel(
3793 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
3794 &instance->reg_set->doorbell);
3795 else
3796 writel(
3797 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
3798 &instance->reg_set->inbound_doorbell);
3799
3800 max_wait = MEGASAS_RESET_WAIT_TIME;
3801 cur_state = MFI_STATE_WAIT_HANDSHAKE;
3802 break;
3803
3804 case MFI_STATE_BOOT_MESSAGE_PENDING:
3805 if ((instance->pdev->device ==
3806 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3807 (instance->pdev->device ==
3808 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3809 (instance->adapter_type != MFI_SERIES))
3810 writel(MFI_INIT_HOTPLUG,
3811 &instance->reg_set->doorbell);
3812 else
3813 writel(MFI_INIT_HOTPLUG,
3814 &instance->reg_set->inbound_doorbell);
3815
3816 max_wait = MEGASAS_RESET_WAIT_TIME;
3817 cur_state = MFI_STATE_BOOT_MESSAGE_PENDING;
3818 break;
3819
3820 case MFI_STATE_OPERATIONAL:
3821 /*
3822 * Bring it to READY state; assuming max wait 10 secs
3823 */
3824 instance->instancet->disable_intr(instance);
3825 if ((instance->pdev->device ==
3826 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3827 (instance->pdev->device ==
3828 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3829 (instance->adapter_type != MFI_SERIES)) {
3830 writel(MFI_RESET_FLAGS,
3831 &instance->reg_set->doorbell);
3832
3833 if (instance->adapter_type != MFI_SERIES) {
3834 for (i = 0; i < (10 * 1000); i += 20) {
3835 if (readl(
3836 &instance->
3837 reg_set->
3838 doorbell) & 1)
3839 msleep(20);
3840 else
3841 break;
3842 }
3843 }
3844 } else
3845 writel(MFI_RESET_FLAGS,
3846 &instance->reg_set->inbound_doorbell);
3847
3848 max_wait = MEGASAS_RESET_WAIT_TIME;
3849 cur_state = MFI_STATE_OPERATIONAL;
3850 break;
3851
3852 case MFI_STATE_UNDEFINED:
3853 /*
3854 * This state should not last for more than 2 seconds
3855 */
3856 max_wait = MEGASAS_RESET_WAIT_TIME;
3857 cur_state = MFI_STATE_UNDEFINED;
3858 break;
3859
3860 case MFI_STATE_BB_INIT:
3861 max_wait = MEGASAS_RESET_WAIT_TIME;
3862 cur_state = MFI_STATE_BB_INIT;
3863 break;
3864
3865 case MFI_STATE_FW_INIT:
3866 max_wait = MEGASAS_RESET_WAIT_TIME;
3867 cur_state = MFI_STATE_FW_INIT;
3868 break;
3869
3870 case MFI_STATE_FW_INIT_2:
3871 max_wait = MEGASAS_RESET_WAIT_TIME;
3872 cur_state = MFI_STATE_FW_INIT_2;
3873 break;
3874
3875 case MFI_STATE_DEVICE_SCAN:
3876 max_wait = MEGASAS_RESET_WAIT_TIME;
3877 cur_state = MFI_STATE_DEVICE_SCAN;
3878 break;
3879
3880 case MFI_STATE_FLUSH_CACHE:
3881 max_wait = MEGASAS_RESET_WAIT_TIME;
3882 cur_state = MFI_STATE_FLUSH_CACHE;
3883 break;
3884
3885 default:
3886 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Unknown state 0x%x\n",
3887 fw_state);
3888 return -ENODEV;
3889 }
3890
3891 /*
3892 * The cur_state should not last for more than max_wait secs
3893 */
3894 for (i = 0; i < (max_wait * 1000); i++) {
3895 curr_abs_state = instance->instancet->
3896 read_fw_status_reg(instance->reg_set);
3897
3898 if (abs_state == curr_abs_state) {
3899 msleep(1);
3900 } else
3901 break;
3902 }
3903
3904 /*
3905 * Return error if fw_state hasn't changed after max_wait
3906 */
3907 if (curr_abs_state == abs_state) {
3908 dev_printk(KERN_DEBUG, &instance->pdev->dev, "FW state [%d] hasn't changed "
3909 "in %d secs\n", fw_state, max_wait);
3910 return -ENODEV;
3911 }
3912
3913 abs_state = curr_abs_state;
3914 fw_state = curr_abs_state & MFI_STATE_MASK;
3915 }
3916 dev_info(&instance->pdev->dev, "FW now in Ready state\n");
3917
3918 return 0;
3919 }
3920
3921 /**
3922 * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool
3923 * @instance: Adapter soft state
3924 */
megasas_teardown_frame_pool(struct megasas_instance * instance)3925 static void megasas_teardown_frame_pool(struct megasas_instance *instance)
3926 {
3927 int i;
3928 u16 max_cmd = instance->max_mfi_cmds;
3929 struct megasas_cmd *cmd;
3930
3931 if (!instance->frame_dma_pool)
3932 return;
3933
3934 /*
3935 * Return all frames to pool
3936 */
3937 for (i = 0; i < max_cmd; i++) {
3938
3939 cmd = instance->cmd_list[i];
3940
3941 if (cmd->frame)
3942 dma_pool_free(instance->frame_dma_pool, cmd->frame,
3943 cmd->frame_phys_addr);
3944
3945 if (cmd->sense)
3946 dma_pool_free(instance->sense_dma_pool, cmd->sense,
3947 cmd->sense_phys_addr);
3948 }
3949
3950 /*
3951 * Now destroy the pool itself
3952 */
3953 dma_pool_destroy(instance->frame_dma_pool);
3954 dma_pool_destroy(instance->sense_dma_pool);
3955
3956 instance->frame_dma_pool = NULL;
3957 instance->sense_dma_pool = NULL;
3958 }
3959
3960 /**
3961 * megasas_create_frame_pool - Creates DMA pool for cmd frames
3962 * @instance: Adapter soft state
3963 *
3964 * Each command packet has an embedded DMA memory buffer that is used for
3965 * filling MFI frame and the SG list that immediately follows the frame. This
3966 * function creates those DMA memory buffers for each command packet by using
3967 * PCI pool facility.
3968 */
megasas_create_frame_pool(struct megasas_instance * instance)3969 static int megasas_create_frame_pool(struct megasas_instance *instance)
3970 {
3971 int i;
3972 u16 max_cmd;
3973 u32 sge_sz;
3974 u32 frame_count;
3975 struct megasas_cmd *cmd;
3976
3977 max_cmd = instance->max_mfi_cmds;
3978
3979 /*
3980 * Size of our frame is 64 bytes for MFI frame, followed by max SG
3981 * elements and finally SCSI_SENSE_BUFFERSIZE bytes for sense buffer
3982 */
3983 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
3984 sizeof(struct megasas_sge32);
3985
3986 if (instance->flag_ieee)
3987 sge_sz = sizeof(struct megasas_sge_skinny);
3988
3989 /*
3990 * For MFI controllers.
3991 * max_num_sge = 60
3992 * max_sge_sz = 16 byte (sizeof megasas_sge_skinny)
3993 * Total 960 byte (15 MFI frame of 64 byte)
3994 *
3995 * Fusion adapter require only 3 extra frame.
3996 * max_num_sge = 16 (defined as MAX_IOCTL_SGE)
3997 * max_sge_sz = 12 byte (sizeof megasas_sge64)
3998 * Total 192 byte (3 MFI frame of 64 byte)
3999 */
4000 frame_count = (instance->adapter_type == MFI_SERIES) ?
4001 (15 + 1) : (3 + 1);
4002 instance->mfi_frame_size = MEGAMFI_FRAME_SIZE * frame_count;
4003 /*
4004 * Use DMA pool facility provided by PCI layer
4005 */
4006 instance->frame_dma_pool = dma_pool_create("megasas frame pool",
4007 &instance->pdev->dev,
4008 instance->mfi_frame_size, 256, 0);
4009
4010 if (!instance->frame_dma_pool) {
4011 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup frame pool\n");
4012 return -ENOMEM;
4013 }
4014
4015 instance->sense_dma_pool = dma_pool_create("megasas sense pool",
4016 &instance->pdev->dev, 128,
4017 4, 0);
4018
4019 if (!instance->sense_dma_pool) {
4020 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup sense pool\n");
4021
4022 dma_pool_destroy(instance->frame_dma_pool);
4023 instance->frame_dma_pool = NULL;
4024
4025 return -ENOMEM;
4026 }
4027
4028 /*
4029 * Allocate and attach a frame to each of the commands in cmd_list.
4030 * By making cmd->index as the context instead of the &cmd, we can
4031 * always use 32bit context regardless of the architecture
4032 */
4033 for (i = 0; i < max_cmd; i++) {
4034
4035 cmd = instance->cmd_list[i];
4036
4037 cmd->frame = dma_pool_zalloc(instance->frame_dma_pool,
4038 GFP_KERNEL, &cmd->frame_phys_addr);
4039
4040 cmd->sense = dma_pool_alloc(instance->sense_dma_pool,
4041 GFP_KERNEL, &cmd->sense_phys_addr);
4042
4043 /*
4044 * megasas_teardown_frame_pool() takes care of freeing
4045 * whatever has been allocated
4046 */
4047 if (!cmd->frame || !cmd->sense) {
4048 dev_printk(KERN_DEBUG, &instance->pdev->dev, "dma_pool_alloc failed\n");
4049 megasas_teardown_frame_pool(instance);
4050 return -ENOMEM;
4051 }
4052
4053 cmd->frame->io.context = cpu_to_le32(cmd->index);
4054 cmd->frame->io.pad_0 = 0;
4055 if ((instance->adapter_type == MFI_SERIES) && reset_devices)
4056 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
4057 }
4058
4059 return 0;
4060 }
4061
4062 /**
4063 * megasas_free_cmds - Free all the cmds in the free cmd pool
4064 * @instance: Adapter soft state
4065 */
megasas_free_cmds(struct megasas_instance * instance)4066 void megasas_free_cmds(struct megasas_instance *instance)
4067 {
4068 int i;
4069
4070 /* First free the MFI frame pool */
4071 megasas_teardown_frame_pool(instance);
4072
4073 /* Free all the commands in the cmd_list */
4074 for (i = 0; i < instance->max_mfi_cmds; i++)
4075
4076 kfree(instance->cmd_list[i]);
4077
4078 /* Free the cmd_list buffer itself */
4079 kfree(instance->cmd_list);
4080 instance->cmd_list = NULL;
4081
4082 INIT_LIST_HEAD(&instance->cmd_pool);
4083 }
4084
4085 /**
4086 * megasas_alloc_cmds - Allocates the command packets
4087 * @instance: Adapter soft state
4088 *
4089 * Each command that is issued to the FW, whether IO commands from the OS or
4090 * internal commands like IOCTLs, are wrapped in local data structure called
4091 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to
4092 * the FW.
4093 *
4094 * Each frame has a 32-bit field called context (tag). This context is used
4095 * to get back the megasas_cmd from the frame when a frame gets completed in
4096 * the ISR. Typically the address of the megasas_cmd itself would be used as
4097 * the context. But we wanted to keep the differences between 32 and 64 bit
4098 * systems to the mininum. We always use 32 bit integers for the context. In
4099 * this driver, the 32 bit values are the indices into an array cmd_list.
4100 * This array is used only to look up the megasas_cmd given the context. The
4101 * free commands themselves are maintained in a linked list called cmd_pool.
4102 */
megasas_alloc_cmds(struct megasas_instance * instance)4103 int megasas_alloc_cmds(struct megasas_instance *instance)
4104 {
4105 int i;
4106 int j;
4107 u16 max_cmd;
4108 struct megasas_cmd *cmd;
4109
4110 max_cmd = instance->max_mfi_cmds;
4111
4112 /*
4113 * instance->cmd_list is an array of struct megasas_cmd pointers.
4114 * Allocate the dynamic array first and then allocate individual
4115 * commands.
4116 */
4117 instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL);
4118
4119 if (!instance->cmd_list) {
4120 dev_printk(KERN_DEBUG, &instance->pdev->dev, "out of memory\n");
4121 return -ENOMEM;
4122 }
4123
4124 memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd);
4125
4126 for (i = 0; i < max_cmd; i++) {
4127 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd),
4128 GFP_KERNEL);
4129
4130 if (!instance->cmd_list[i]) {
4131
4132 for (j = 0; j < i; j++)
4133 kfree(instance->cmd_list[j]);
4134
4135 kfree(instance->cmd_list);
4136 instance->cmd_list = NULL;
4137
4138 return -ENOMEM;
4139 }
4140 }
4141
4142 for (i = 0; i < max_cmd; i++) {
4143 cmd = instance->cmd_list[i];
4144 memset(cmd, 0, sizeof(struct megasas_cmd));
4145 cmd->index = i;
4146 cmd->scmd = NULL;
4147 cmd->instance = instance;
4148
4149 list_add_tail(&cmd->list, &instance->cmd_pool);
4150 }
4151
4152 /*
4153 * Create a frame pool and assign one frame to each cmd
4154 */
4155 if (megasas_create_frame_pool(instance)) {
4156 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error creating frame DMA pool\n");
4157 megasas_free_cmds(instance);
4158 }
4159
4160 return 0;
4161 }
4162
4163 /*
4164 * dcmd_timeout_ocr_possible - Check if OCR is possible based on Driver/FW state.
4165 * @instance: Adapter soft state
4166 *
4167 * Return 0 for only Fusion adapter, if driver load/unload is not in progress
4168 * or FW is not under OCR.
4169 */
4170 inline int
dcmd_timeout_ocr_possible(struct megasas_instance * instance)4171 dcmd_timeout_ocr_possible(struct megasas_instance *instance) {
4172
4173 if (instance->adapter_type == MFI_SERIES)
4174 return KILL_ADAPTER;
4175 else if (instance->unload ||
4176 test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags))
4177 return IGNORE_TIMEOUT;
4178 else
4179 return INITIATE_OCR;
4180 }
4181
4182 static void
megasas_get_pd_info(struct megasas_instance * instance,struct scsi_device * sdev)4183 megasas_get_pd_info(struct megasas_instance *instance, struct scsi_device *sdev)
4184 {
4185 int ret;
4186 struct megasas_cmd *cmd;
4187 struct megasas_dcmd_frame *dcmd;
4188
4189 struct MR_PRIV_DEVICE *mr_device_priv_data;
4190 u16 device_id = 0;
4191
4192 device_id = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + sdev->id;
4193 cmd = megasas_get_cmd(instance);
4194
4195 if (!cmd) {
4196 dev_err(&instance->pdev->dev, "Failed to get cmd %s\n", __func__);
4197 return;
4198 }
4199
4200 dcmd = &cmd->frame->dcmd;
4201
4202 memset(instance->pd_info, 0, sizeof(*instance->pd_info));
4203 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4204
4205 dcmd->mbox.s[0] = cpu_to_le16(device_id);
4206 dcmd->cmd = MFI_CMD_DCMD;
4207 dcmd->cmd_status = 0xFF;
4208 dcmd->sge_count = 1;
4209 dcmd->flags = MFI_FRAME_DIR_READ;
4210 dcmd->timeout = 0;
4211 dcmd->pad_0 = 0;
4212 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_PD_INFO));
4213 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_GET_INFO);
4214
4215 megasas_set_dma_settings(instance, dcmd, instance->pd_info_h,
4216 sizeof(struct MR_PD_INFO));
4217
4218 if ((instance->adapter_type != MFI_SERIES) &&
4219 !instance->mask_interrupts)
4220 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4221 else
4222 ret = megasas_issue_polled(instance, cmd);
4223
4224 switch (ret) {
4225 case DCMD_SUCCESS:
4226 mr_device_priv_data = sdev->hostdata;
4227 le16_to_cpus((u16 *)&instance->pd_info->state.ddf.pdType);
4228 mr_device_priv_data->interface_type =
4229 instance->pd_info->state.ddf.pdType.intf;
4230 break;
4231
4232 case DCMD_TIMEOUT:
4233
4234 switch (dcmd_timeout_ocr_possible(instance)) {
4235 case INITIATE_OCR:
4236 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4237 megasas_reset_fusion(instance->host,
4238 MFI_IO_TIMEOUT_OCR);
4239 break;
4240 case KILL_ADAPTER:
4241 megaraid_sas_kill_hba(instance);
4242 break;
4243 case IGNORE_TIMEOUT:
4244 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4245 __func__, __LINE__);
4246 break;
4247 }
4248
4249 break;
4250 }
4251
4252 if (ret != DCMD_TIMEOUT)
4253 megasas_return_cmd(instance, cmd);
4254
4255 return;
4256 }
4257 /*
4258 * megasas_get_pd_list_info - Returns FW's pd_list structure
4259 * @instance: Adapter soft state
4260 * @pd_list: pd_list structure
4261 *
4262 * Issues an internal command (DCMD) to get the FW's controller PD
4263 * list structure. This information is mainly used to find out SYSTEM
4264 * supported by the FW.
4265 */
4266 static int
megasas_get_pd_list(struct megasas_instance * instance)4267 megasas_get_pd_list(struct megasas_instance *instance)
4268 {
4269 int ret = 0, pd_index = 0;
4270 struct megasas_cmd *cmd;
4271 struct megasas_dcmd_frame *dcmd;
4272 struct MR_PD_LIST *ci;
4273 struct MR_PD_ADDRESS *pd_addr;
4274 dma_addr_t ci_h = 0;
4275
4276 if (instance->pd_list_not_supported) {
4277 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
4278 "not supported by firmware\n");
4279 return ret;
4280 }
4281
4282 ci = instance->pd_list_buf;
4283 ci_h = instance->pd_list_buf_h;
4284
4285 cmd = megasas_get_cmd(instance);
4286
4287 if (!cmd) {
4288 dev_printk(KERN_DEBUG, &instance->pdev->dev, "(get_pd_list): Failed to get cmd\n");
4289 return -ENOMEM;
4290 }
4291
4292 dcmd = &cmd->frame->dcmd;
4293
4294 memset(ci, 0, sizeof(*ci));
4295 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4296
4297 dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST;
4298 dcmd->mbox.b[1] = 0;
4299 dcmd->cmd = MFI_CMD_DCMD;
4300 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4301 dcmd->sge_count = 1;
4302 dcmd->flags = MFI_FRAME_DIR_READ;
4303 dcmd->timeout = 0;
4304 dcmd->pad_0 = 0;
4305 dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
4306 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY);
4307
4308 megasas_set_dma_settings(instance, dcmd, instance->pd_list_buf_h,
4309 (MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST)));
4310
4311 if ((instance->adapter_type != MFI_SERIES) &&
4312 !instance->mask_interrupts)
4313 ret = megasas_issue_blocked_cmd(instance, cmd,
4314 MFI_IO_TIMEOUT_SECS);
4315 else
4316 ret = megasas_issue_polled(instance, cmd);
4317
4318 switch (ret) {
4319 case DCMD_FAILED:
4320 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
4321 "failed/not supported by firmware\n");
4322
4323 if (instance->adapter_type != MFI_SERIES)
4324 megaraid_sas_kill_hba(instance);
4325 else
4326 instance->pd_list_not_supported = 1;
4327 break;
4328 case DCMD_TIMEOUT:
4329
4330 switch (dcmd_timeout_ocr_possible(instance)) {
4331 case INITIATE_OCR:
4332 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4333 /*
4334 * DCMD failed from AEN path.
4335 * AEN path already hold reset_mutex to avoid PCI access
4336 * while OCR is in progress.
4337 */
4338 mutex_unlock(&instance->reset_mutex);
4339 megasas_reset_fusion(instance->host,
4340 MFI_IO_TIMEOUT_OCR);
4341 mutex_lock(&instance->reset_mutex);
4342 break;
4343 case KILL_ADAPTER:
4344 megaraid_sas_kill_hba(instance);
4345 break;
4346 case IGNORE_TIMEOUT:
4347 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d \n",
4348 __func__, __LINE__);
4349 break;
4350 }
4351
4352 break;
4353
4354 case DCMD_SUCCESS:
4355 pd_addr = ci->addr;
4356
4357 if ((le32_to_cpu(ci->count) >
4358 (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL)))
4359 break;
4360
4361 memset(instance->local_pd_list, 0,
4362 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
4363
4364 for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) {
4365 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].tid =
4366 le16_to_cpu(pd_addr->deviceId);
4367 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveType =
4368 pd_addr->scsiDevType;
4369 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveState =
4370 MR_PD_STATE_SYSTEM;
4371 pd_addr++;
4372 }
4373
4374 memcpy(instance->pd_list, instance->local_pd_list,
4375 sizeof(instance->pd_list));
4376 break;
4377
4378 }
4379
4380 if (ret != DCMD_TIMEOUT)
4381 megasas_return_cmd(instance, cmd);
4382
4383 return ret;
4384 }
4385
4386 /*
4387 * megasas_get_ld_list_info - Returns FW's ld_list structure
4388 * @instance: Adapter soft state
4389 * @ld_list: ld_list structure
4390 *
4391 * Issues an internal command (DCMD) to get the FW's controller PD
4392 * list structure. This information is mainly used to find out SYSTEM
4393 * supported by the FW.
4394 */
4395 static int
megasas_get_ld_list(struct megasas_instance * instance)4396 megasas_get_ld_list(struct megasas_instance *instance)
4397 {
4398 int ret = 0, ld_index = 0, ids = 0;
4399 struct megasas_cmd *cmd;
4400 struct megasas_dcmd_frame *dcmd;
4401 struct MR_LD_LIST *ci;
4402 dma_addr_t ci_h = 0;
4403 u32 ld_count;
4404
4405 ci = instance->ld_list_buf;
4406 ci_h = instance->ld_list_buf_h;
4407
4408 cmd = megasas_get_cmd(instance);
4409
4410 if (!cmd) {
4411 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_list: Failed to get cmd\n");
4412 return -ENOMEM;
4413 }
4414
4415 dcmd = &cmd->frame->dcmd;
4416
4417 memset(ci, 0, sizeof(*ci));
4418 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4419
4420 if (instance->supportmax256vd)
4421 dcmd->mbox.b[0] = 1;
4422 dcmd->cmd = MFI_CMD_DCMD;
4423 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4424 dcmd->sge_count = 1;
4425 dcmd->flags = MFI_FRAME_DIR_READ;
4426 dcmd->timeout = 0;
4427 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST));
4428 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST);
4429 dcmd->pad_0 = 0;
4430
4431 megasas_set_dma_settings(instance, dcmd, ci_h,
4432 sizeof(struct MR_LD_LIST));
4433
4434 if ((instance->adapter_type != MFI_SERIES) &&
4435 !instance->mask_interrupts)
4436 ret = megasas_issue_blocked_cmd(instance, cmd,
4437 MFI_IO_TIMEOUT_SECS);
4438 else
4439 ret = megasas_issue_polled(instance, cmd);
4440
4441 ld_count = le32_to_cpu(ci->ldCount);
4442
4443 switch (ret) {
4444 case DCMD_FAILED:
4445 megaraid_sas_kill_hba(instance);
4446 break;
4447 case DCMD_TIMEOUT:
4448
4449 switch (dcmd_timeout_ocr_possible(instance)) {
4450 case INITIATE_OCR:
4451 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4452 /*
4453 * DCMD failed from AEN path.
4454 * AEN path already hold reset_mutex to avoid PCI access
4455 * while OCR is in progress.
4456 */
4457 mutex_unlock(&instance->reset_mutex);
4458 megasas_reset_fusion(instance->host,
4459 MFI_IO_TIMEOUT_OCR);
4460 mutex_lock(&instance->reset_mutex);
4461 break;
4462 case KILL_ADAPTER:
4463 megaraid_sas_kill_hba(instance);
4464 break;
4465 case IGNORE_TIMEOUT:
4466 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4467 __func__, __LINE__);
4468 break;
4469 }
4470
4471 break;
4472
4473 case DCMD_SUCCESS:
4474 if (ld_count > instance->fw_supported_vd_count)
4475 break;
4476
4477 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
4478
4479 for (ld_index = 0; ld_index < ld_count; ld_index++) {
4480 if (ci->ldList[ld_index].state != 0) {
4481 ids = ci->ldList[ld_index].ref.targetId;
4482 instance->ld_ids[ids] = ci->ldList[ld_index].ref.targetId;
4483 }
4484 }
4485
4486 break;
4487 }
4488
4489 if (ret != DCMD_TIMEOUT)
4490 megasas_return_cmd(instance, cmd);
4491
4492 return ret;
4493 }
4494
4495 /**
4496 * megasas_ld_list_query - Returns FW's ld_list structure
4497 * @instance: Adapter soft state
4498 * @ld_list: ld_list structure
4499 *
4500 * Issues an internal command (DCMD) to get the FW's controller PD
4501 * list structure. This information is mainly used to find out SYSTEM
4502 * supported by the FW.
4503 */
4504 static int
megasas_ld_list_query(struct megasas_instance * instance,u8 query_type)4505 megasas_ld_list_query(struct megasas_instance *instance, u8 query_type)
4506 {
4507 int ret = 0, ld_index = 0, ids = 0;
4508 struct megasas_cmd *cmd;
4509 struct megasas_dcmd_frame *dcmd;
4510 struct MR_LD_TARGETID_LIST *ci;
4511 dma_addr_t ci_h = 0;
4512 u32 tgtid_count;
4513
4514 ci = instance->ld_targetid_list_buf;
4515 ci_h = instance->ld_targetid_list_buf_h;
4516
4517 cmd = megasas_get_cmd(instance);
4518
4519 if (!cmd) {
4520 dev_warn(&instance->pdev->dev,
4521 "megasas_ld_list_query: Failed to get cmd\n");
4522 return -ENOMEM;
4523 }
4524
4525 dcmd = &cmd->frame->dcmd;
4526
4527 memset(ci, 0, sizeof(*ci));
4528 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4529
4530 dcmd->mbox.b[0] = query_type;
4531 if (instance->supportmax256vd)
4532 dcmd->mbox.b[2] = 1;
4533
4534 dcmd->cmd = MFI_CMD_DCMD;
4535 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4536 dcmd->sge_count = 1;
4537 dcmd->flags = MFI_FRAME_DIR_READ;
4538 dcmd->timeout = 0;
4539 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
4540 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY);
4541 dcmd->pad_0 = 0;
4542
4543 megasas_set_dma_settings(instance, dcmd, ci_h,
4544 sizeof(struct MR_LD_TARGETID_LIST));
4545
4546 if ((instance->adapter_type != MFI_SERIES) &&
4547 !instance->mask_interrupts)
4548 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4549 else
4550 ret = megasas_issue_polled(instance, cmd);
4551
4552 switch (ret) {
4553 case DCMD_FAILED:
4554 dev_info(&instance->pdev->dev,
4555 "DCMD not supported by firmware - %s %d\n",
4556 __func__, __LINE__);
4557 ret = megasas_get_ld_list(instance);
4558 break;
4559 case DCMD_TIMEOUT:
4560 switch (dcmd_timeout_ocr_possible(instance)) {
4561 case INITIATE_OCR:
4562 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4563 /*
4564 * DCMD failed from AEN path.
4565 * AEN path already hold reset_mutex to avoid PCI access
4566 * while OCR is in progress.
4567 */
4568 mutex_unlock(&instance->reset_mutex);
4569 megasas_reset_fusion(instance->host,
4570 MFI_IO_TIMEOUT_OCR);
4571 mutex_lock(&instance->reset_mutex);
4572 break;
4573 case KILL_ADAPTER:
4574 megaraid_sas_kill_hba(instance);
4575 break;
4576 case IGNORE_TIMEOUT:
4577 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4578 __func__, __LINE__);
4579 break;
4580 }
4581
4582 break;
4583 case DCMD_SUCCESS:
4584 tgtid_count = le32_to_cpu(ci->count);
4585
4586 if ((tgtid_count > (instance->fw_supported_vd_count)))
4587 break;
4588
4589 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
4590 for (ld_index = 0; ld_index < tgtid_count; ld_index++) {
4591 ids = ci->targetId[ld_index];
4592 instance->ld_ids[ids] = ci->targetId[ld_index];
4593 }
4594
4595 break;
4596 }
4597
4598 if (ret != DCMD_TIMEOUT)
4599 megasas_return_cmd(instance, cmd);
4600
4601 return ret;
4602 }
4603
4604 /*
4605 * megasas_update_ext_vd_details : Update details w.r.t Extended VD
4606 * instance : Controller's instance
4607 */
megasas_update_ext_vd_details(struct megasas_instance * instance)4608 static void megasas_update_ext_vd_details(struct megasas_instance *instance)
4609 {
4610 struct fusion_context *fusion;
4611 u32 ventura_map_sz = 0;
4612
4613 fusion = instance->ctrl_context;
4614 /* For MFI based controllers return dummy success */
4615 if (!fusion)
4616 return;
4617
4618 instance->supportmax256vd =
4619 instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs;
4620 /* Below is additional check to address future FW enhancement */
4621 if (instance->ctrl_info_buf->max_lds > 64)
4622 instance->supportmax256vd = 1;
4623
4624 instance->drv_supported_vd_count = MEGASAS_MAX_LD_CHANNELS
4625 * MEGASAS_MAX_DEV_PER_CHANNEL;
4626 instance->drv_supported_pd_count = MEGASAS_MAX_PD_CHANNELS
4627 * MEGASAS_MAX_DEV_PER_CHANNEL;
4628 if (instance->supportmax256vd) {
4629 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES_EXT;
4630 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
4631 } else {
4632 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
4633 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
4634 }
4635
4636 dev_info(&instance->pdev->dev,
4637 "firmware type\t: %s\n",
4638 instance->supportmax256vd ? "Extended VD(240 VD)firmware" :
4639 "Legacy(64 VD) firmware");
4640
4641 if (instance->max_raid_mapsize) {
4642 ventura_map_sz = instance->max_raid_mapsize *
4643 MR_MIN_MAP_SIZE; /* 64k */
4644 fusion->current_map_sz = ventura_map_sz;
4645 fusion->max_map_sz = ventura_map_sz;
4646 } else {
4647 fusion->old_map_sz = sizeof(struct MR_FW_RAID_MAP) +
4648 (sizeof(struct MR_LD_SPAN_MAP) *
4649 (instance->fw_supported_vd_count - 1));
4650 fusion->new_map_sz = sizeof(struct MR_FW_RAID_MAP_EXT);
4651
4652 fusion->max_map_sz =
4653 max(fusion->old_map_sz, fusion->new_map_sz);
4654
4655 if (instance->supportmax256vd)
4656 fusion->current_map_sz = fusion->new_map_sz;
4657 else
4658 fusion->current_map_sz = fusion->old_map_sz;
4659 }
4660 /* irrespective of FW raid maps, driver raid map is constant */
4661 fusion->drv_map_sz = sizeof(struct MR_DRV_RAID_MAP_ALL);
4662 }
4663
4664 /**
4665 * megasas_get_controller_info - Returns FW's controller structure
4666 * @instance: Adapter soft state
4667 *
4668 * Issues an internal command (DCMD) to get the FW's controller structure.
4669 * This information is mainly used to find out the maximum IO transfer per
4670 * command supported by the FW.
4671 */
4672 int
megasas_get_ctrl_info(struct megasas_instance * instance)4673 megasas_get_ctrl_info(struct megasas_instance *instance)
4674 {
4675 int ret = 0;
4676 struct megasas_cmd *cmd;
4677 struct megasas_dcmd_frame *dcmd;
4678 struct megasas_ctrl_info *ci;
4679 dma_addr_t ci_h = 0;
4680
4681 ci = instance->ctrl_info_buf;
4682 ci_h = instance->ctrl_info_buf_h;
4683
4684 cmd = megasas_get_cmd(instance);
4685
4686 if (!cmd) {
4687 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a free cmd\n");
4688 return -ENOMEM;
4689 }
4690
4691 dcmd = &cmd->frame->dcmd;
4692
4693 memset(ci, 0, sizeof(*ci));
4694 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4695
4696 dcmd->cmd = MFI_CMD_DCMD;
4697 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4698 dcmd->sge_count = 1;
4699 dcmd->flags = MFI_FRAME_DIR_READ;
4700 dcmd->timeout = 0;
4701 dcmd->pad_0 = 0;
4702 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_ctrl_info));
4703 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO);
4704 dcmd->mbox.b[0] = 1;
4705
4706 megasas_set_dma_settings(instance, dcmd, ci_h,
4707 sizeof(struct megasas_ctrl_info));
4708
4709 if ((instance->adapter_type != MFI_SERIES) &&
4710 !instance->mask_interrupts) {
4711 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4712 } else {
4713 ret = megasas_issue_polled(instance, cmd);
4714 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4715 }
4716
4717 switch (ret) {
4718 case DCMD_SUCCESS:
4719 /* Save required controller information in
4720 * CPU endianness format.
4721 */
4722 le32_to_cpus((u32 *)&ci->properties.OnOffProperties);
4723 le32_to_cpus((u32 *)&ci->adapterOperations2);
4724 le32_to_cpus((u32 *)&ci->adapterOperations3);
4725 le16_to_cpus((u16 *)&ci->adapter_operations4);
4726
4727 /* Update the latest Ext VD info.
4728 * From Init path, store current firmware details.
4729 * From OCR path, detect any firmware properties changes.
4730 * in case of Firmware upgrade without system reboot.
4731 */
4732 megasas_update_ext_vd_details(instance);
4733 instance->use_seqnum_jbod_fp =
4734 ci->adapterOperations3.useSeqNumJbodFP;
4735 instance->support_morethan256jbod =
4736 ci->adapter_operations4.support_pd_map_target_id;
4737 instance->support_nvme_passthru =
4738 ci->adapter_operations4.support_nvme_passthru;
4739 instance->task_abort_tmo = ci->TaskAbortTO;
4740 instance->max_reset_tmo = ci->MaxResetTO;
4741
4742 /*Check whether controller is iMR or MR */
4743 instance->is_imr = (ci->memory_size ? 0 : 1);
4744 dev_info(&instance->pdev->dev,
4745 "controller type\t: %s(%dMB)\n",
4746 instance->is_imr ? "iMR" : "MR",
4747 le16_to_cpu(ci->memory_size));
4748
4749 instance->disableOnlineCtrlReset =
4750 ci->properties.OnOffProperties.disableOnlineCtrlReset;
4751 instance->secure_jbod_support =
4752 ci->adapterOperations3.supportSecurityonJBOD;
4753 dev_info(&instance->pdev->dev, "Online Controller Reset(OCR)\t: %s\n",
4754 instance->disableOnlineCtrlReset ? "Disabled" : "Enabled");
4755 dev_info(&instance->pdev->dev, "Secure JBOD support\t: %s\n",
4756 instance->secure_jbod_support ? "Yes" : "No");
4757 dev_info(&instance->pdev->dev, "NVMe passthru support\t: %s\n",
4758 instance->support_nvme_passthru ? "Yes" : "No");
4759 dev_info(&instance->pdev->dev,
4760 "FW provided TM TaskAbort/Reset timeout\t: %d secs/%d secs\n",
4761 instance->task_abort_tmo, instance->max_reset_tmo);
4762
4763 break;
4764
4765 case DCMD_TIMEOUT:
4766 switch (dcmd_timeout_ocr_possible(instance)) {
4767 case INITIATE_OCR:
4768 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4769 megasas_reset_fusion(instance->host,
4770 MFI_IO_TIMEOUT_OCR);
4771 break;
4772 case KILL_ADAPTER:
4773 megaraid_sas_kill_hba(instance);
4774 break;
4775 case IGNORE_TIMEOUT:
4776 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4777 __func__, __LINE__);
4778 break;
4779 }
4780 break;
4781 case DCMD_FAILED:
4782 megaraid_sas_kill_hba(instance);
4783 break;
4784
4785 }
4786
4787 if (ret != DCMD_TIMEOUT)
4788 megasas_return_cmd(instance, cmd);
4789
4790 return ret;
4791 }
4792
4793 /*
4794 * megasas_set_crash_dump_params - Sends address of crash dump DMA buffer
4795 * to firmware
4796 *
4797 * @instance: Adapter soft state
4798 * @crash_buf_state - tell FW to turn ON/OFF crash dump feature
4799 MR_CRASH_BUF_TURN_OFF = 0
4800 MR_CRASH_BUF_TURN_ON = 1
4801 * @return 0 on success non-zero on failure.
4802 * Issues an internal command (DCMD) to set parameters for crash dump feature.
4803 * Driver will send address of crash dump DMA buffer and set mbox to tell FW
4804 * that driver supports crash dump feature. This DCMD will be sent only if
4805 * crash dump feature is supported by the FW.
4806 *
4807 */
megasas_set_crash_dump_params(struct megasas_instance * instance,u8 crash_buf_state)4808 int megasas_set_crash_dump_params(struct megasas_instance *instance,
4809 u8 crash_buf_state)
4810 {
4811 int ret = 0;
4812 struct megasas_cmd *cmd;
4813 struct megasas_dcmd_frame *dcmd;
4814
4815 cmd = megasas_get_cmd(instance);
4816
4817 if (!cmd) {
4818 dev_err(&instance->pdev->dev, "Failed to get a free cmd\n");
4819 return -ENOMEM;
4820 }
4821
4822
4823 dcmd = &cmd->frame->dcmd;
4824
4825 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4826 dcmd->mbox.b[0] = crash_buf_state;
4827 dcmd->cmd = MFI_CMD_DCMD;
4828 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4829 dcmd->sge_count = 1;
4830 dcmd->flags = MFI_FRAME_DIR_NONE;
4831 dcmd->timeout = 0;
4832 dcmd->pad_0 = 0;
4833 dcmd->data_xfer_len = cpu_to_le32(CRASH_DMA_BUF_SIZE);
4834 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SET_CRASH_DUMP_PARAMS);
4835
4836 megasas_set_dma_settings(instance, dcmd, instance->crash_dump_h,
4837 CRASH_DMA_BUF_SIZE);
4838
4839 if ((instance->adapter_type != MFI_SERIES) &&
4840 !instance->mask_interrupts)
4841 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4842 else
4843 ret = megasas_issue_polled(instance, cmd);
4844
4845 if (ret == DCMD_TIMEOUT) {
4846 switch (dcmd_timeout_ocr_possible(instance)) {
4847 case INITIATE_OCR:
4848 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4849 megasas_reset_fusion(instance->host,
4850 MFI_IO_TIMEOUT_OCR);
4851 break;
4852 case KILL_ADAPTER:
4853 megaraid_sas_kill_hba(instance);
4854 break;
4855 case IGNORE_TIMEOUT:
4856 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4857 __func__, __LINE__);
4858 break;
4859 }
4860 } else
4861 megasas_return_cmd(instance, cmd);
4862
4863 return ret;
4864 }
4865
4866 /**
4867 * megasas_issue_init_mfi - Initializes the FW
4868 * @instance: Adapter soft state
4869 *
4870 * Issues the INIT MFI cmd
4871 */
4872 static int
megasas_issue_init_mfi(struct megasas_instance * instance)4873 megasas_issue_init_mfi(struct megasas_instance *instance)
4874 {
4875 __le32 context;
4876 struct megasas_cmd *cmd;
4877 struct megasas_init_frame *init_frame;
4878 struct megasas_init_queue_info *initq_info;
4879 dma_addr_t init_frame_h;
4880 dma_addr_t initq_info_h;
4881
4882 /*
4883 * Prepare a init frame. Note the init frame points to queue info
4884 * structure. Each frame has SGL allocated after first 64 bytes. For
4885 * this frame - since we don't need any SGL - we use SGL's space as
4886 * queue info structure
4887 *
4888 * We will not get a NULL command below. We just created the pool.
4889 */
4890 cmd = megasas_get_cmd(instance);
4891
4892 init_frame = (struct megasas_init_frame *)cmd->frame;
4893 initq_info = (struct megasas_init_queue_info *)
4894 ((unsigned long)init_frame + 64);
4895
4896 init_frame_h = cmd->frame_phys_addr;
4897 initq_info_h = init_frame_h + 64;
4898
4899 context = init_frame->context;
4900 memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
4901 memset(initq_info, 0, sizeof(struct megasas_init_queue_info));
4902 init_frame->context = context;
4903
4904 initq_info->reply_queue_entries = cpu_to_le32(instance->max_fw_cmds + 1);
4905 initq_info->reply_queue_start_phys_addr_lo = cpu_to_le32(instance->reply_queue_h);
4906
4907 initq_info->producer_index_phys_addr_lo = cpu_to_le32(instance->producer_h);
4908 initq_info->consumer_index_phys_addr_lo = cpu_to_le32(instance->consumer_h);
4909
4910 init_frame->cmd = MFI_CMD_INIT;
4911 init_frame->cmd_status = MFI_STAT_INVALID_STATUS;
4912 init_frame->queue_info_new_phys_addr_lo =
4913 cpu_to_le32(lower_32_bits(initq_info_h));
4914 init_frame->queue_info_new_phys_addr_hi =
4915 cpu_to_le32(upper_32_bits(initq_info_h));
4916
4917 init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info));
4918
4919 /*
4920 * disable the intr before firing the init frame to FW
4921 */
4922 instance->instancet->disable_intr(instance);
4923
4924 /*
4925 * Issue the init frame in polled mode
4926 */
4927
4928 if (megasas_issue_polled(instance, cmd)) {
4929 dev_err(&instance->pdev->dev, "Failed to init firmware\n");
4930 megasas_return_cmd(instance, cmd);
4931 goto fail_fw_init;
4932 }
4933
4934 megasas_return_cmd(instance, cmd);
4935
4936 return 0;
4937
4938 fail_fw_init:
4939 return -EINVAL;
4940 }
4941
4942 static u32
megasas_init_adapter_mfi(struct megasas_instance * instance)4943 megasas_init_adapter_mfi(struct megasas_instance *instance)
4944 {
4945 struct megasas_register_set __iomem *reg_set;
4946 u32 context_sz;
4947 u32 reply_q_sz;
4948
4949 reg_set = instance->reg_set;
4950
4951 /*
4952 * Get various operational parameters from status register
4953 */
4954 instance->max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF;
4955 /*
4956 * Reduce the max supported cmds by 1. This is to ensure that the
4957 * reply_q_sz (1 more than the max cmd that driver may send)
4958 * does not exceed max cmds that the FW can support
4959 */
4960 instance->max_fw_cmds = instance->max_fw_cmds-1;
4961 instance->max_mfi_cmds = instance->max_fw_cmds;
4962 instance->max_num_sge = (instance->instancet->read_fw_status_reg(reg_set) & 0xFF0000) >>
4963 0x10;
4964 /*
4965 * For MFI skinny adapters, MEGASAS_SKINNY_INT_CMDS commands
4966 * are reserved for IOCTL + driver's internal DCMDs.
4967 */
4968 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4969 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
4970 instance->max_scsi_cmds = (instance->max_fw_cmds -
4971 MEGASAS_SKINNY_INT_CMDS);
4972 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS);
4973 } else {
4974 instance->max_scsi_cmds = (instance->max_fw_cmds -
4975 MEGASAS_INT_CMDS);
4976 sema_init(&instance->ioctl_sem, (MEGASAS_MFI_IOCTL_CMDS));
4977 }
4978
4979 instance->cur_can_queue = instance->max_scsi_cmds;
4980 /*
4981 * Create a pool of commands
4982 */
4983 if (megasas_alloc_cmds(instance))
4984 goto fail_alloc_cmds;
4985
4986 /*
4987 * Allocate memory for reply queue. Length of reply queue should
4988 * be _one_ more than the maximum commands handled by the firmware.
4989 *
4990 * Note: When FW completes commands, it places corresponding contex
4991 * values in this circular reply queue. This circular queue is a fairly
4992 * typical producer-consumer queue. FW is the producer (of completed
4993 * commands) and the driver is the consumer.
4994 */
4995 context_sz = sizeof(u32);
4996 reply_q_sz = context_sz * (instance->max_fw_cmds + 1);
4997
4998 instance->reply_queue = pci_alloc_consistent(instance->pdev,
4999 reply_q_sz,
5000 &instance->reply_queue_h);
5001
5002 if (!instance->reply_queue) {
5003 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Out of DMA mem for reply queue\n");
5004 goto fail_reply_queue;
5005 }
5006
5007 if (megasas_issue_init_mfi(instance))
5008 goto fail_fw_init;
5009
5010 if (megasas_get_ctrl_info(instance)) {
5011 dev_err(&instance->pdev->dev, "(%d): Could get controller info "
5012 "Fail from %s %d\n", instance->unique_id,
5013 __func__, __LINE__);
5014 goto fail_fw_init;
5015 }
5016
5017 instance->fw_support_ieee = 0;
5018 instance->fw_support_ieee =
5019 (instance->instancet->read_fw_status_reg(reg_set) &
5020 0x04000000);
5021
5022 dev_notice(&instance->pdev->dev, "megasas_init_mfi: fw_support_ieee=%d",
5023 instance->fw_support_ieee);
5024
5025 if (instance->fw_support_ieee)
5026 instance->flag_ieee = 1;
5027
5028 return 0;
5029
5030 fail_fw_init:
5031
5032 pci_free_consistent(instance->pdev, reply_q_sz,
5033 instance->reply_queue, instance->reply_queue_h);
5034 fail_reply_queue:
5035 megasas_free_cmds(instance);
5036
5037 fail_alloc_cmds:
5038 return 1;
5039 }
5040
5041 /*
5042 * megasas_setup_irqs_ioapic - register legacy interrupts.
5043 * @instance: Adapter soft state
5044 *
5045 * Do not enable interrupt, only setup ISRs.
5046 *
5047 * Return 0 on success.
5048 */
5049 static int
megasas_setup_irqs_ioapic(struct megasas_instance * instance)5050 megasas_setup_irqs_ioapic(struct megasas_instance *instance)
5051 {
5052 struct pci_dev *pdev;
5053
5054 pdev = instance->pdev;
5055 instance->irq_context[0].instance = instance;
5056 instance->irq_context[0].MSIxIndex = 0;
5057 if (request_irq(pci_irq_vector(pdev, 0),
5058 instance->instancet->service_isr, IRQF_SHARED,
5059 "megasas", &instance->irq_context[0])) {
5060 dev_err(&instance->pdev->dev,
5061 "Failed to register IRQ from %s %d\n",
5062 __func__, __LINE__);
5063 return -1;
5064 }
5065 return 0;
5066 }
5067
5068 /**
5069 * megasas_setup_irqs_msix - register MSI-x interrupts.
5070 * @instance: Adapter soft state
5071 * @is_probe: Driver probe check
5072 *
5073 * Do not enable interrupt, only setup ISRs.
5074 *
5075 * Return 0 on success.
5076 */
5077 static int
megasas_setup_irqs_msix(struct megasas_instance * instance,u8 is_probe)5078 megasas_setup_irqs_msix(struct megasas_instance *instance, u8 is_probe)
5079 {
5080 int i, j;
5081 struct pci_dev *pdev;
5082
5083 pdev = instance->pdev;
5084
5085 /* Try MSI-x */
5086 for (i = 0; i < instance->msix_vectors; i++) {
5087 instance->irq_context[i].instance = instance;
5088 instance->irq_context[i].MSIxIndex = i;
5089 if (request_irq(pci_irq_vector(pdev, i),
5090 instance->instancet->service_isr, 0, "megasas",
5091 &instance->irq_context[i])) {
5092 dev_err(&instance->pdev->dev,
5093 "Failed to register IRQ for vector %d.\n", i);
5094 for (j = 0; j < i; j++)
5095 free_irq(pci_irq_vector(pdev, j),
5096 &instance->irq_context[j]);
5097 /* Retry irq register for IO_APIC*/
5098 instance->msix_vectors = 0;
5099 if (is_probe) {
5100 pci_free_irq_vectors(instance->pdev);
5101 return megasas_setup_irqs_ioapic(instance);
5102 } else {
5103 return -1;
5104 }
5105 }
5106 }
5107 return 0;
5108 }
5109
5110 /*
5111 * megasas_destroy_irqs- unregister interrupts.
5112 * @instance: Adapter soft state
5113 * return: void
5114 */
5115 static void
megasas_destroy_irqs(struct megasas_instance * instance)5116 megasas_destroy_irqs(struct megasas_instance *instance) {
5117
5118 int i;
5119
5120 if (instance->msix_vectors)
5121 for (i = 0; i < instance->msix_vectors; i++) {
5122 free_irq(pci_irq_vector(instance->pdev, i),
5123 &instance->irq_context[i]);
5124 }
5125 else
5126 free_irq(pci_irq_vector(instance->pdev, 0),
5127 &instance->irq_context[0]);
5128 }
5129
5130 /**
5131 * megasas_setup_jbod_map - setup jbod map for FP seq_number.
5132 * @instance: Adapter soft state
5133 * @is_probe: Driver probe check
5134 *
5135 * Return 0 on success.
5136 */
5137 void
megasas_setup_jbod_map(struct megasas_instance * instance)5138 megasas_setup_jbod_map(struct megasas_instance *instance)
5139 {
5140 int i;
5141 struct fusion_context *fusion = instance->ctrl_context;
5142 u32 pd_seq_map_sz;
5143
5144 pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) +
5145 (sizeof(struct MR_PD_CFG_SEQ) * (MAX_PHYSICAL_DEVICES - 1));
5146
5147 if (reset_devices || !fusion ||
5148 !instance->ctrl_info_buf->adapterOperations3.useSeqNumJbodFP) {
5149 dev_info(&instance->pdev->dev,
5150 "Jbod map is not supported %s %d\n",
5151 __func__, __LINE__);
5152 instance->use_seqnum_jbod_fp = false;
5153 return;
5154 }
5155
5156 if (fusion->pd_seq_sync[0])
5157 goto skip_alloc;
5158
5159 for (i = 0; i < JBOD_MAPS_COUNT; i++) {
5160 fusion->pd_seq_sync[i] = dma_alloc_coherent
5161 (&instance->pdev->dev, pd_seq_map_sz,
5162 &fusion->pd_seq_phys[i], GFP_KERNEL);
5163 if (!fusion->pd_seq_sync[i]) {
5164 dev_err(&instance->pdev->dev,
5165 "Failed to allocate memory from %s %d\n",
5166 __func__, __LINE__);
5167 if (i == 1) {
5168 dma_free_coherent(&instance->pdev->dev,
5169 pd_seq_map_sz, fusion->pd_seq_sync[0],
5170 fusion->pd_seq_phys[0]);
5171 fusion->pd_seq_sync[0] = NULL;
5172 }
5173 instance->use_seqnum_jbod_fp = false;
5174 return;
5175 }
5176 }
5177
5178 skip_alloc:
5179 if (!megasas_sync_pd_seq_num(instance, false) &&
5180 !megasas_sync_pd_seq_num(instance, true))
5181 instance->use_seqnum_jbod_fp = true;
5182 else
5183 instance->use_seqnum_jbod_fp = false;
5184 }
5185
megasas_setup_reply_map(struct megasas_instance * instance)5186 static void megasas_setup_reply_map(struct megasas_instance *instance)
5187 {
5188 const struct cpumask *mask;
5189 unsigned int queue, cpu;
5190
5191 for (queue = 0; queue < instance->msix_vectors; queue++) {
5192 mask = pci_irq_get_affinity(instance->pdev, queue);
5193 if (!mask)
5194 goto fallback;
5195
5196 for_each_cpu(cpu, mask)
5197 instance->reply_map[cpu] = queue;
5198 }
5199 return;
5200
5201 fallback:
5202 for_each_possible_cpu(cpu)
5203 instance->reply_map[cpu] = cpu % instance->msix_vectors;
5204 }
5205
5206 /**
5207 * megasas_init_fw - Initializes the FW
5208 * @instance: Adapter soft state
5209 *
5210 * This is the main function for initializing firmware
5211 */
5212
megasas_init_fw(struct megasas_instance * instance)5213 static int megasas_init_fw(struct megasas_instance *instance)
5214 {
5215 u32 max_sectors_1;
5216 u32 max_sectors_2, tmp_sectors, msix_enable;
5217 u32 scratch_pad_2, scratch_pad_3, scratch_pad_4;
5218 resource_size_t base_addr;
5219 struct megasas_register_set __iomem *reg_set;
5220 struct megasas_ctrl_info *ctrl_info = NULL;
5221 unsigned long bar_list;
5222 int i, j, loop, fw_msix_count = 0;
5223 struct IOV_111 *iovPtr;
5224 struct fusion_context *fusion;
5225
5226 fusion = instance->ctrl_context;
5227
5228 /* Find first memory bar */
5229 bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM);
5230 instance->bar = find_first_bit(&bar_list, BITS_PER_LONG);
5231 if (pci_request_selected_regions(instance->pdev, 1<<instance->bar,
5232 "megasas: LSI")) {
5233 dev_printk(KERN_DEBUG, &instance->pdev->dev, "IO memory region busy!\n");
5234 return -EBUSY;
5235 }
5236
5237 base_addr = pci_resource_start(instance->pdev, instance->bar);
5238 instance->reg_set = ioremap_nocache(base_addr, 8192);
5239
5240 if (!instance->reg_set) {
5241 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to map IO mem\n");
5242 goto fail_ioremap;
5243 }
5244
5245 reg_set = instance->reg_set;
5246
5247 if (instance->adapter_type != MFI_SERIES)
5248 instance->instancet = &megasas_instance_template_fusion;
5249 else {
5250 switch (instance->pdev->device) {
5251 case PCI_DEVICE_ID_LSI_SAS1078R:
5252 case PCI_DEVICE_ID_LSI_SAS1078DE:
5253 instance->instancet = &megasas_instance_template_ppc;
5254 break;
5255 case PCI_DEVICE_ID_LSI_SAS1078GEN2:
5256 case PCI_DEVICE_ID_LSI_SAS0079GEN2:
5257 instance->instancet = &megasas_instance_template_gen2;
5258 break;
5259 case PCI_DEVICE_ID_LSI_SAS0073SKINNY:
5260 case PCI_DEVICE_ID_LSI_SAS0071SKINNY:
5261 instance->instancet = &megasas_instance_template_skinny;
5262 break;
5263 case PCI_DEVICE_ID_LSI_SAS1064R:
5264 case PCI_DEVICE_ID_DELL_PERC5:
5265 default:
5266 instance->instancet = &megasas_instance_template_xscale;
5267 instance->pd_list_not_supported = 1;
5268 break;
5269 }
5270 }
5271
5272 if (megasas_transition_to_ready(instance, 0)) {
5273 atomic_set(&instance->fw_reset_no_pci_access, 1);
5274 instance->instancet->adp_reset
5275 (instance, instance->reg_set);
5276 atomic_set(&instance->fw_reset_no_pci_access, 0);
5277 dev_info(&instance->pdev->dev,
5278 "FW restarted successfully from %s!\n",
5279 __func__);
5280
5281 /*waitting for about 30 second before retry*/
5282 ssleep(30);
5283
5284 if (megasas_transition_to_ready(instance, 0))
5285 goto fail_ready_state;
5286 }
5287
5288 megasas_init_ctrl_params(instance);
5289
5290 if (megasas_set_dma_mask(instance))
5291 goto fail_ready_state;
5292
5293 if (megasas_alloc_ctrl_mem(instance))
5294 goto fail_alloc_dma_buf;
5295
5296 if (megasas_alloc_ctrl_dma_buffers(instance))
5297 goto fail_alloc_dma_buf;
5298
5299 fusion = instance->ctrl_context;
5300
5301 if (instance->adapter_type == VENTURA_SERIES) {
5302 scratch_pad_3 =
5303 readl(&instance->reg_set->outbound_scratch_pad_3);
5304 instance->max_raid_mapsize = ((scratch_pad_3 >>
5305 MR_MAX_RAID_MAP_SIZE_OFFSET_SHIFT) &
5306 MR_MAX_RAID_MAP_SIZE_MASK);
5307 }
5308
5309 /* Check if MSI-X is supported while in ready state */
5310 msix_enable = (instance->instancet->read_fw_status_reg(reg_set) &
5311 0x4000000) >> 0x1a;
5312 if (msix_enable && !msix_disable) {
5313 int irq_flags = PCI_IRQ_MSIX;
5314
5315 scratch_pad_2 = readl
5316 (&instance->reg_set->outbound_scratch_pad_2);
5317 /* Check max MSI-X vectors */
5318 if (fusion) {
5319 if (instance->adapter_type == THUNDERBOLT_SERIES) {
5320 /* Thunderbolt Series*/
5321 instance->msix_vectors = (scratch_pad_2
5322 & MR_MAX_REPLY_QUEUES_OFFSET) + 1;
5323 fw_msix_count = instance->msix_vectors;
5324 } else { /* Invader series supports more than 8 MSI-x vectors*/
5325 instance->msix_vectors = ((scratch_pad_2
5326 & MR_MAX_REPLY_QUEUES_EXT_OFFSET)
5327 >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1;
5328 if (instance->msix_vectors > 16)
5329 instance->msix_combined = true;
5330
5331 if (rdpq_enable)
5332 instance->is_rdpq = (scratch_pad_2 & MR_RDPQ_MODE_OFFSET) ?
5333 1 : 0;
5334 fw_msix_count = instance->msix_vectors;
5335 /* Save 1-15 reply post index address to local memory
5336 * Index 0 is already saved from reg offset
5337 * MPI2_REPLY_POST_HOST_INDEX_OFFSET
5338 */
5339 for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) {
5340 instance->reply_post_host_index_addr[loop] =
5341 (u32 __iomem *)
5342 ((u8 __iomem *)instance->reg_set +
5343 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET
5344 + (loop * 0x10));
5345 }
5346 }
5347 if (msix_vectors)
5348 instance->msix_vectors = min(msix_vectors,
5349 instance->msix_vectors);
5350 } else /* MFI adapters */
5351 instance->msix_vectors = 1;
5352 /* Don't bother allocating more MSI-X vectors than cpus */
5353 instance->msix_vectors = min(instance->msix_vectors,
5354 (unsigned int)num_online_cpus());
5355 if (smp_affinity_enable)
5356 irq_flags |= PCI_IRQ_AFFINITY;
5357 i = pci_alloc_irq_vectors(instance->pdev, 1,
5358 instance->msix_vectors, irq_flags);
5359 if (i > 0)
5360 instance->msix_vectors = i;
5361 else
5362 instance->msix_vectors = 0;
5363 }
5364 /*
5365 * MSI-X host index 0 is common for all adapter.
5366 * It is used for all MPT based Adapters.
5367 */
5368 if (instance->msix_combined) {
5369 instance->reply_post_host_index_addr[0] =
5370 (u32 *)((u8 *)instance->reg_set +
5371 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET);
5372 } else {
5373 instance->reply_post_host_index_addr[0] =
5374 (u32 *)((u8 *)instance->reg_set +
5375 MPI2_REPLY_POST_HOST_INDEX_OFFSET);
5376 }
5377
5378 if (!instance->msix_vectors) {
5379 i = pci_alloc_irq_vectors(instance->pdev, 1, 1, PCI_IRQ_LEGACY);
5380 if (i < 0)
5381 goto fail_setup_irqs;
5382 }
5383
5384 megasas_setup_reply_map(instance);
5385
5386 dev_info(&instance->pdev->dev,
5387 "firmware supports msix\t: (%d)", fw_msix_count);
5388 dev_info(&instance->pdev->dev,
5389 "current msix/online cpus\t: (%d/%d)\n",
5390 instance->msix_vectors, (unsigned int)num_online_cpus());
5391 dev_info(&instance->pdev->dev,
5392 "RDPQ mode\t: (%s)\n", instance->is_rdpq ? "enabled" : "disabled");
5393
5394 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
5395 (unsigned long)instance);
5396
5397 /*
5398 * Below are default value for legacy Firmware.
5399 * non-fusion based controllers
5400 */
5401 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
5402 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
5403 /* Get operational params, sge flags, send init cmd to controller */
5404 if (instance->instancet->init_adapter(instance))
5405 goto fail_init_adapter;
5406
5407 if (instance->adapter_type == VENTURA_SERIES) {
5408 scratch_pad_4 =
5409 readl(&instance->reg_set->outbound_scratch_pad_4);
5410 if ((scratch_pad_4 & MR_NVME_PAGE_SIZE_MASK) >=
5411 MR_DEFAULT_NVME_PAGE_SHIFT)
5412 instance->nvme_page_size =
5413 (1 << (scratch_pad_4 & MR_NVME_PAGE_SIZE_MASK));
5414
5415 dev_info(&instance->pdev->dev,
5416 "NVME page size\t: (%d)\n", instance->nvme_page_size);
5417 }
5418
5419 if (instance->msix_vectors ?
5420 megasas_setup_irqs_msix(instance, 1) :
5421 megasas_setup_irqs_ioapic(instance))
5422 goto fail_init_adapter;
5423
5424 instance->instancet->enable_intr(instance);
5425
5426 dev_info(&instance->pdev->dev, "INIT adapter done\n");
5427
5428 megasas_setup_jbod_map(instance);
5429
5430 /** for passthrough
5431 * the following function will get the PD LIST.
5432 */
5433 memset(instance->pd_list, 0,
5434 (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)));
5435 if (megasas_get_pd_list(instance) < 0) {
5436 dev_err(&instance->pdev->dev, "failed to get PD list\n");
5437 goto fail_get_ld_pd_list;
5438 }
5439
5440 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
5441
5442 /* stream detection initialization */
5443 if (instance->adapter_type == VENTURA_SERIES) {
5444 fusion->stream_detect_by_ld =
5445 kcalloc(MAX_LOGICAL_DRIVES_EXT,
5446 sizeof(struct LD_STREAM_DETECT *),
5447 GFP_KERNEL);
5448 if (!fusion->stream_detect_by_ld) {
5449 dev_err(&instance->pdev->dev,
5450 "unable to allocate stream detection for pool of LDs\n");
5451 goto fail_get_ld_pd_list;
5452 }
5453 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i) {
5454 fusion->stream_detect_by_ld[i] =
5455 kzalloc(sizeof(struct LD_STREAM_DETECT),
5456 GFP_KERNEL);
5457 if (!fusion->stream_detect_by_ld[i]) {
5458 dev_err(&instance->pdev->dev,
5459 "unable to allocate stream detect by LD\n ");
5460 for (j = 0; j < i; ++j)
5461 kfree(fusion->stream_detect_by_ld[j]);
5462 kfree(fusion->stream_detect_by_ld);
5463 fusion->stream_detect_by_ld = NULL;
5464 goto fail_get_ld_pd_list;
5465 }
5466 fusion->stream_detect_by_ld[i]->mru_bit_map
5467 = MR_STREAM_BITMAP;
5468 }
5469 }
5470
5471 if (megasas_ld_list_query(instance,
5472 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST))
5473 goto fail_get_ld_pd_list;
5474
5475 /*
5476 * Compute the max allowed sectors per IO: The controller info has two
5477 * limits on max sectors. Driver should use the minimum of these two.
5478 *
5479 * 1 << stripe_sz_ops.min = max sectors per strip
5480 *
5481 * Note that older firmwares ( < FW ver 30) didn't report information
5482 * to calculate max_sectors_1. So the number ended up as zero always.
5483 */
5484 tmp_sectors = 0;
5485 ctrl_info = instance->ctrl_info_buf;
5486
5487 max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) *
5488 le16_to_cpu(ctrl_info->max_strips_per_io);
5489 max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size);
5490
5491 tmp_sectors = min_t(u32, max_sectors_1, max_sectors_2);
5492
5493 instance->peerIsPresent = ctrl_info->cluster.peerIsPresent;
5494 instance->passive = ctrl_info->cluster.passive;
5495 memcpy(instance->clusterId, ctrl_info->clusterId, sizeof(instance->clusterId));
5496 instance->UnevenSpanSupport =
5497 ctrl_info->adapterOperations2.supportUnevenSpans;
5498 if (instance->UnevenSpanSupport) {
5499 struct fusion_context *fusion = instance->ctrl_context;
5500 if (MR_ValidateMapInfo(instance, instance->map_id))
5501 fusion->fast_path_io = 1;
5502 else
5503 fusion->fast_path_io = 0;
5504
5505 }
5506 if (ctrl_info->host_interface.SRIOV) {
5507 instance->requestorId = ctrl_info->iov.requestorId;
5508 if (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) {
5509 if (!ctrl_info->adapterOperations2.activePassive)
5510 instance->PlasmaFW111 = 1;
5511
5512 dev_info(&instance->pdev->dev, "SR-IOV: firmware type: %s\n",
5513 instance->PlasmaFW111 ? "1.11" : "new");
5514
5515 if (instance->PlasmaFW111) {
5516 iovPtr = (struct IOV_111 *)
5517 ((unsigned char *)ctrl_info + IOV_111_OFFSET);
5518 instance->requestorId = iovPtr->requestorId;
5519 }
5520 }
5521 dev_info(&instance->pdev->dev, "SRIOV: VF requestorId %d\n",
5522 instance->requestorId);
5523 }
5524
5525 instance->crash_dump_fw_support =
5526 ctrl_info->adapterOperations3.supportCrashDump;
5527 instance->crash_dump_drv_support =
5528 (instance->crash_dump_fw_support &&
5529 instance->crash_dump_buf);
5530 if (instance->crash_dump_drv_support)
5531 megasas_set_crash_dump_params(instance,
5532 MR_CRASH_BUF_TURN_OFF);
5533
5534 else {
5535 if (instance->crash_dump_buf)
5536 pci_free_consistent(instance->pdev,
5537 CRASH_DMA_BUF_SIZE,
5538 instance->crash_dump_buf,
5539 instance->crash_dump_h);
5540 instance->crash_dump_buf = NULL;
5541 }
5542
5543
5544 dev_info(&instance->pdev->dev,
5545 "pci id\t\t: (0x%04x)/(0x%04x)/(0x%04x)/(0x%04x)\n",
5546 le16_to_cpu(ctrl_info->pci.vendor_id),
5547 le16_to_cpu(ctrl_info->pci.device_id),
5548 le16_to_cpu(ctrl_info->pci.sub_vendor_id),
5549 le16_to_cpu(ctrl_info->pci.sub_device_id));
5550 dev_info(&instance->pdev->dev, "unevenspan support : %s\n",
5551 instance->UnevenSpanSupport ? "yes" : "no");
5552 dev_info(&instance->pdev->dev, "firmware crash dump : %s\n",
5553 instance->crash_dump_drv_support ? "yes" : "no");
5554 dev_info(&instance->pdev->dev, "jbod sync map : %s\n",
5555 instance->use_seqnum_jbod_fp ? "yes" : "no");
5556
5557
5558 instance->max_sectors_per_req = instance->max_num_sge *
5559 SGE_BUFFER_SIZE / 512;
5560 if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
5561 instance->max_sectors_per_req = tmp_sectors;
5562
5563 /* Check for valid throttlequeuedepth module parameter */
5564 if (throttlequeuedepth &&
5565 throttlequeuedepth <= instance->max_scsi_cmds)
5566 instance->throttlequeuedepth = throttlequeuedepth;
5567 else
5568 instance->throttlequeuedepth =
5569 MEGASAS_THROTTLE_QUEUE_DEPTH;
5570
5571 if ((resetwaittime < 1) ||
5572 (resetwaittime > MEGASAS_RESET_WAIT_TIME))
5573 resetwaittime = MEGASAS_RESET_WAIT_TIME;
5574
5575 if ((scmd_timeout < 10) || (scmd_timeout > MEGASAS_DEFAULT_CMD_TIMEOUT))
5576 scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT;
5577
5578 /* Launch SR-IOV heartbeat timer */
5579 if (instance->requestorId) {
5580 if (!megasas_sriov_start_heartbeat(instance, 1))
5581 megasas_start_timer(instance);
5582 else
5583 instance->skip_heartbeat_timer_del = 1;
5584 }
5585
5586 return 0;
5587
5588 fail_get_ld_pd_list:
5589 instance->instancet->disable_intr(instance);
5590 fail_init_adapter:
5591 megasas_destroy_irqs(instance);
5592 fail_setup_irqs:
5593 if (instance->msix_vectors)
5594 pci_free_irq_vectors(instance->pdev);
5595 instance->msix_vectors = 0;
5596 fail_alloc_dma_buf:
5597 megasas_free_ctrl_dma_buffers(instance);
5598 megasas_free_ctrl_mem(instance);
5599 fail_ready_state:
5600 iounmap(instance->reg_set);
5601
5602 fail_ioremap:
5603 pci_release_selected_regions(instance->pdev, 1<<instance->bar);
5604
5605 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
5606 __func__, __LINE__);
5607 return -EINVAL;
5608 }
5609
5610 /**
5611 * megasas_release_mfi - Reverses the FW initialization
5612 * @instance: Adapter soft state
5613 */
megasas_release_mfi(struct megasas_instance * instance)5614 static void megasas_release_mfi(struct megasas_instance *instance)
5615 {
5616 u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1);
5617
5618 if (instance->reply_queue)
5619 pci_free_consistent(instance->pdev, reply_q_sz,
5620 instance->reply_queue, instance->reply_queue_h);
5621
5622 megasas_free_cmds(instance);
5623
5624 iounmap(instance->reg_set);
5625
5626 pci_release_selected_regions(instance->pdev, 1<<instance->bar);
5627 }
5628
5629 /**
5630 * megasas_get_seq_num - Gets latest event sequence numbers
5631 * @instance: Adapter soft state
5632 * @eli: FW event log sequence numbers information
5633 *
5634 * FW maintains a log of all events in a non-volatile area. Upper layers would
5635 * usually find out the latest sequence number of the events, the seq number at
5636 * the boot etc. They would "read" all the events below the latest seq number
5637 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq
5638 * number), they would subsribe to AEN (asynchronous event notification) and
5639 * wait for the events to happen.
5640 */
5641 static int
megasas_get_seq_num(struct megasas_instance * instance,struct megasas_evt_log_info * eli)5642 megasas_get_seq_num(struct megasas_instance *instance,
5643 struct megasas_evt_log_info *eli)
5644 {
5645 struct megasas_cmd *cmd;
5646 struct megasas_dcmd_frame *dcmd;
5647 struct megasas_evt_log_info *el_info;
5648 dma_addr_t el_info_h = 0;
5649 int ret;
5650
5651 cmd = megasas_get_cmd(instance);
5652
5653 if (!cmd) {
5654 return -ENOMEM;
5655 }
5656
5657 dcmd = &cmd->frame->dcmd;
5658 el_info = pci_zalloc_consistent(instance->pdev,
5659 sizeof(struct megasas_evt_log_info),
5660 &el_info_h);
5661
5662 if (!el_info) {
5663 megasas_return_cmd(instance, cmd);
5664 return -ENOMEM;
5665 }
5666
5667 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5668
5669 dcmd->cmd = MFI_CMD_DCMD;
5670 dcmd->cmd_status = 0x0;
5671 dcmd->sge_count = 1;
5672 dcmd->flags = MFI_FRAME_DIR_READ;
5673 dcmd->timeout = 0;
5674 dcmd->pad_0 = 0;
5675 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info));
5676 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO);
5677
5678 megasas_set_dma_settings(instance, dcmd, el_info_h,
5679 sizeof(struct megasas_evt_log_info));
5680
5681 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
5682 if (ret != DCMD_SUCCESS) {
5683 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
5684 __func__, __LINE__);
5685 goto dcmd_failed;
5686 }
5687
5688 /*
5689 * Copy the data back into callers buffer
5690 */
5691 eli->newest_seq_num = el_info->newest_seq_num;
5692 eli->oldest_seq_num = el_info->oldest_seq_num;
5693 eli->clear_seq_num = el_info->clear_seq_num;
5694 eli->shutdown_seq_num = el_info->shutdown_seq_num;
5695 eli->boot_seq_num = el_info->boot_seq_num;
5696
5697 dcmd_failed:
5698 pci_free_consistent(instance->pdev, sizeof(struct megasas_evt_log_info),
5699 el_info, el_info_h);
5700
5701 megasas_return_cmd(instance, cmd);
5702
5703 return ret;
5704 }
5705
5706 /**
5707 * megasas_register_aen - Registers for asynchronous event notification
5708 * @instance: Adapter soft state
5709 * @seq_num: The starting sequence number
5710 * @class_locale: Class of the event
5711 *
5712 * This function subscribes for AEN for events beyond the @seq_num. It requests
5713 * to be notified if and only if the event is of type @class_locale
5714 */
5715 static int
megasas_register_aen(struct megasas_instance * instance,u32 seq_num,u32 class_locale_word)5716 megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
5717 u32 class_locale_word)
5718 {
5719 int ret_val;
5720 struct megasas_cmd *cmd;
5721 struct megasas_dcmd_frame *dcmd;
5722 union megasas_evt_class_locale curr_aen;
5723 union megasas_evt_class_locale prev_aen;
5724
5725 /*
5726 * If there an AEN pending already (aen_cmd), check if the
5727 * class_locale of that pending AEN is inclusive of the new
5728 * AEN request we currently have. If it is, then we don't have
5729 * to do anything. In other words, whichever events the current
5730 * AEN request is subscribing to, have already been subscribed
5731 * to.
5732 *
5733 * If the old_cmd is _not_ inclusive, then we have to abort
5734 * that command, form a class_locale that is superset of both
5735 * old and current and re-issue to the FW
5736 */
5737
5738 curr_aen.word = class_locale_word;
5739
5740 if (instance->aen_cmd) {
5741
5742 prev_aen.word =
5743 le32_to_cpu(instance->aen_cmd->frame->dcmd.mbox.w[1]);
5744
5745 if ((curr_aen.members.class < MFI_EVT_CLASS_DEBUG) ||
5746 (curr_aen.members.class > MFI_EVT_CLASS_DEAD)) {
5747 dev_info(&instance->pdev->dev,
5748 "%s %d out of range class %d send by application\n",
5749 __func__, __LINE__, curr_aen.members.class);
5750 return 0;
5751 }
5752
5753 /*
5754 * A class whose enum value is smaller is inclusive of all
5755 * higher values. If a PROGRESS (= -1) was previously
5756 * registered, then a new registration requests for higher
5757 * classes need not be sent to FW. They are automatically
5758 * included.
5759 *
5760 * Locale numbers don't have such hierarchy. They are bitmap
5761 * values
5762 */
5763 if ((prev_aen.members.class <= curr_aen.members.class) &&
5764 !((prev_aen.members.locale & curr_aen.members.locale) ^
5765 curr_aen.members.locale)) {
5766 /*
5767 * Previously issued event registration includes
5768 * current request. Nothing to do.
5769 */
5770 return 0;
5771 } else {
5772 curr_aen.members.locale |= prev_aen.members.locale;
5773
5774 if (prev_aen.members.class < curr_aen.members.class)
5775 curr_aen.members.class = prev_aen.members.class;
5776
5777 instance->aen_cmd->abort_aen = 1;
5778 ret_val = megasas_issue_blocked_abort_cmd(instance,
5779 instance->
5780 aen_cmd, 30);
5781
5782 if (ret_val) {
5783 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to abort "
5784 "previous AEN command\n");
5785 return ret_val;
5786 }
5787 }
5788 }
5789
5790 cmd = megasas_get_cmd(instance);
5791
5792 if (!cmd)
5793 return -ENOMEM;
5794
5795 dcmd = &cmd->frame->dcmd;
5796
5797 memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail));
5798
5799 /*
5800 * Prepare DCMD for aen registration
5801 */
5802 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5803
5804 dcmd->cmd = MFI_CMD_DCMD;
5805 dcmd->cmd_status = 0x0;
5806 dcmd->sge_count = 1;
5807 dcmd->flags = MFI_FRAME_DIR_READ;
5808 dcmd->timeout = 0;
5809 dcmd->pad_0 = 0;
5810 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail));
5811 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT);
5812 dcmd->mbox.w[0] = cpu_to_le32(seq_num);
5813 instance->last_seq_num = seq_num;
5814 dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word);
5815
5816 megasas_set_dma_settings(instance, dcmd, instance->evt_detail_h,
5817 sizeof(struct megasas_evt_detail));
5818
5819 if (instance->aen_cmd != NULL) {
5820 megasas_return_cmd(instance, cmd);
5821 return 0;
5822 }
5823
5824 /*
5825 * Store reference to the cmd used to register for AEN. When an
5826 * application wants us to register for AEN, we have to abort this
5827 * cmd and re-register with a new EVENT LOCALE supplied by that app
5828 */
5829 instance->aen_cmd = cmd;
5830
5831 /*
5832 * Issue the aen registration frame
5833 */
5834 instance->instancet->issue_dcmd(instance, cmd);
5835
5836 return 0;
5837 }
5838
5839 /* megasas_get_target_prop - Send DCMD with below details to firmware.
5840 *
5841 * This DCMD will fetch few properties of LD/system PD defined
5842 * in MR_TARGET_DEV_PROPERTIES. eg. Queue Depth, MDTS value.
5843 *
5844 * DCMD send by drivers whenever new target is added to the OS.
5845 *
5846 * dcmd.opcode - MR_DCMD_DEV_GET_TARGET_PROP
5847 * dcmd.mbox.b[0] - DCMD is to be fired for LD or system PD.
5848 * 0 = system PD, 1 = LD.
5849 * dcmd.mbox.s[1] - TargetID for LD/system PD.
5850 * dcmd.sge IN - Pointer to return MR_TARGET_DEV_PROPERTIES.
5851 *
5852 * @instance: Adapter soft state
5853 * @sdev: OS provided scsi device
5854 *
5855 * Returns 0 on success non-zero on failure.
5856 */
5857 int
megasas_get_target_prop(struct megasas_instance * instance,struct scsi_device * sdev)5858 megasas_get_target_prop(struct megasas_instance *instance,
5859 struct scsi_device *sdev)
5860 {
5861 int ret;
5862 struct megasas_cmd *cmd;
5863 struct megasas_dcmd_frame *dcmd;
5864 u16 targetId = (sdev->channel % 2) + sdev->id;
5865
5866 cmd = megasas_get_cmd(instance);
5867
5868 if (!cmd) {
5869 dev_err(&instance->pdev->dev,
5870 "Failed to get cmd %s\n", __func__);
5871 return -ENOMEM;
5872 }
5873
5874 dcmd = &cmd->frame->dcmd;
5875
5876 memset(instance->tgt_prop, 0, sizeof(*instance->tgt_prop));
5877 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5878 dcmd->mbox.b[0] = MEGASAS_IS_LOGICAL(sdev);
5879
5880 dcmd->mbox.s[1] = cpu_to_le16(targetId);
5881 dcmd->cmd = MFI_CMD_DCMD;
5882 dcmd->cmd_status = 0xFF;
5883 dcmd->sge_count = 1;
5884 dcmd->flags = MFI_FRAME_DIR_READ;
5885 dcmd->timeout = 0;
5886 dcmd->pad_0 = 0;
5887 dcmd->data_xfer_len =
5888 cpu_to_le32(sizeof(struct MR_TARGET_PROPERTIES));
5889 dcmd->opcode = cpu_to_le32(MR_DCMD_DRV_GET_TARGET_PROP);
5890
5891 megasas_set_dma_settings(instance, dcmd, instance->tgt_prop_h,
5892 sizeof(struct MR_TARGET_PROPERTIES));
5893
5894 if ((instance->adapter_type != MFI_SERIES) &&
5895 !instance->mask_interrupts)
5896 ret = megasas_issue_blocked_cmd(instance,
5897 cmd, MFI_IO_TIMEOUT_SECS);
5898 else
5899 ret = megasas_issue_polled(instance, cmd);
5900
5901 switch (ret) {
5902 case DCMD_TIMEOUT:
5903 switch (dcmd_timeout_ocr_possible(instance)) {
5904 case INITIATE_OCR:
5905 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5906 megasas_reset_fusion(instance->host,
5907 MFI_IO_TIMEOUT_OCR);
5908 break;
5909 case KILL_ADAPTER:
5910 megaraid_sas_kill_hba(instance);
5911 break;
5912 case IGNORE_TIMEOUT:
5913 dev_info(&instance->pdev->dev,
5914 "Ignore DCMD timeout: %s %d\n",
5915 __func__, __LINE__);
5916 break;
5917 }
5918 break;
5919
5920 default:
5921 megasas_return_cmd(instance, cmd);
5922 }
5923 if (ret != DCMD_SUCCESS)
5924 dev_err(&instance->pdev->dev,
5925 "return from %s %d return value %d\n",
5926 __func__, __LINE__, ret);
5927
5928 return ret;
5929 }
5930
5931 /**
5932 * megasas_start_aen - Subscribes to AEN during driver load time
5933 * @instance: Adapter soft state
5934 */
megasas_start_aen(struct megasas_instance * instance)5935 static int megasas_start_aen(struct megasas_instance *instance)
5936 {
5937 struct megasas_evt_log_info eli;
5938 union megasas_evt_class_locale class_locale;
5939
5940 /*
5941 * Get the latest sequence number from FW
5942 */
5943 memset(&eli, 0, sizeof(eli));
5944
5945 if (megasas_get_seq_num(instance, &eli))
5946 return -1;
5947
5948 /*
5949 * Register AEN with FW for latest sequence number plus 1
5950 */
5951 class_locale.members.reserved = 0;
5952 class_locale.members.locale = MR_EVT_LOCALE_ALL;
5953 class_locale.members.class = MR_EVT_CLASS_DEBUG;
5954
5955 return megasas_register_aen(instance,
5956 le32_to_cpu(eli.newest_seq_num) + 1,
5957 class_locale.word);
5958 }
5959
5960 /**
5961 * megasas_io_attach - Attaches this driver to SCSI mid-layer
5962 * @instance: Adapter soft state
5963 */
megasas_io_attach(struct megasas_instance * instance)5964 static int megasas_io_attach(struct megasas_instance *instance)
5965 {
5966 struct Scsi_Host *host = instance->host;
5967
5968 /*
5969 * Export parameters required by SCSI mid-layer
5970 */
5971 host->unique_id = instance->unique_id;
5972 host->can_queue = instance->max_scsi_cmds;
5973 host->this_id = instance->init_id;
5974 host->sg_tablesize = instance->max_num_sge;
5975
5976 if (instance->fw_support_ieee)
5977 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE;
5978
5979 /*
5980 * Check if the module parameter value for max_sectors can be used
5981 */
5982 if (max_sectors && max_sectors < instance->max_sectors_per_req)
5983 instance->max_sectors_per_req = max_sectors;
5984 else {
5985 if (max_sectors) {
5986 if (((instance->pdev->device ==
5987 PCI_DEVICE_ID_LSI_SAS1078GEN2) ||
5988 (instance->pdev->device ==
5989 PCI_DEVICE_ID_LSI_SAS0079GEN2)) &&
5990 (max_sectors <= MEGASAS_MAX_SECTORS)) {
5991 instance->max_sectors_per_req = max_sectors;
5992 } else {
5993 dev_info(&instance->pdev->dev, "max_sectors should be > 0"
5994 "and <= %d (or < 1MB for GEN2 controller)\n",
5995 instance->max_sectors_per_req);
5996 }
5997 }
5998 }
5999
6000 host->max_sectors = instance->max_sectors_per_req;
6001 host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN;
6002 host->max_channel = MEGASAS_MAX_CHANNELS - 1;
6003 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL;
6004 host->max_lun = MEGASAS_MAX_LUN;
6005 host->max_cmd_len = 16;
6006
6007 /*
6008 * Notify the mid-layer about the new controller
6009 */
6010 if (scsi_add_host(host, &instance->pdev->dev)) {
6011 dev_err(&instance->pdev->dev,
6012 "Failed to add host from %s %d\n",
6013 __func__, __LINE__);
6014 return -ENODEV;
6015 }
6016
6017 return 0;
6018 }
6019
6020 /**
6021 * megasas_set_dma_mask - Set DMA mask for supported controllers
6022 *
6023 * @instance: Adapter soft state
6024 * Description:
6025 *
6026 * For Ventura, driver/FW will operate in 64bit DMA addresses.
6027 *
6028 * For invader-
6029 * By default, driver/FW will operate in 32bit DMA addresses
6030 * for consistent DMA mapping but if 32 bit consistent
6031 * DMA mask fails, driver will try with 64 bit consistent
6032 * mask provided FW is true 64bit DMA capable
6033 *
6034 * For older controllers(Thunderbolt and MFI based adapters)-
6035 * driver/FW will operate in 32 bit consistent DMA addresses.
6036 */
6037 static int
megasas_set_dma_mask(struct megasas_instance * instance)6038 megasas_set_dma_mask(struct megasas_instance *instance)
6039 {
6040 u64 consistent_mask;
6041 struct pci_dev *pdev;
6042 u32 scratch_pad_2;
6043
6044 pdev = instance->pdev;
6045 consistent_mask = (instance->adapter_type == VENTURA_SERIES) ?
6046 DMA_BIT_MASK(64) : DMA_BIT_MASK(32);
6047
6048 if (IS_DMA64) {
6049 if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)) &&
6050 dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
6051 goto fail_set_dma_mask;
6052
6053 if ((*pdev->dev.dma_mask == DMA_BIT_MASK(64)) &&
6054 (dma_set_coherent_mask(&pdev->dev, consistent_mask) &&
6055 dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))) {
6056 /*
6057 * If 32 bit DMA mask fails, then try for 64 bit mask
6058 * for FW capable of handling 64 bit DMA.
6059 */
6060 scratch_pad_2 = readl
6061 (&instance->reg_set->outbound_scratch_pad_2);
6062
6063 if (!(scratch_pad_2 & MR_CAN_HANDLE_64_BIT_DMA_OFFSET))
6064 goto fail_set_dma_mask;
6065 else if (dma_set_mask_and_coherent(&pdev->dev,
6066 DMA_BIT_MASK(64)))
6067 goto fail_set_dma_mask;
6068 }
6069 } else if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
6070 goto fail_set_dma_mask;
6071
6072 if (pdev->dev.coherent_dma_mask == DMA_BIT_MASK(32))
6073 instance->consistent_mask_64bit = false;
6074 else
6075 instance->consistent_mask_64bit = true;
6076
6077 dev_info(&pdev->dev, "%s bit DMA mask and %s bit consistent mask\n",
6078 ((*pdev->dev.dma_mask == DMA_BIT_MASK(64)) ? "64" : "32"),
6079 (instance->consistent_mask_64bit ? "64" : "32"));
6080
6081 return 0;
6082
6083 fail_set_dma_mask:
6084 dev_err(&pdev->dev, "Failed to set DMA mask\n");
6085 return -1;
6086
6087 }
6088
6089 /*
6090 * megasas_set_adapter_type - Set adapter type.
6091 * Supported controllers can be divided in
6092 * 4 categories- enum MR_ADAPTER_TYPE {
6093 * MFI_SERIES = 1,
6094 * THUNDERBOLT_SERIES = 2,
6095 * INVADER_SERIES = 3,
6096 * VENTURA_SERIES = 4,
6097 * };
6098 * @instance: Adapter soft state
6099 * return: void
6100 */
megasas_set_adapter_type(struct megasas_instance * instance)6101 static inline void megasas_set_adapter_type(struct megasas_instance *instance)
6102 {
6103 if ((instance->pdev->vendor == PCI_VENDOR_ID_DELL) &&
6104 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5)) {
6105 instance->adapter_type = MFI_SERIES;
6106 } else {
6107 switch (instance->pdev->device) {
6108 case PCI_DEVICE_ID_LSI_VENTURA:
6109 case PCI_DEVICE_ID_LSI_CRUSADER:
6110 case PCI_DEVICE_ID_LSI_HARPOON:
6111 case PCI_DEVICE_ID_LSI_TOMCAT:
6112 case PCI_DEVICE_ID_LSI_VENTURA_4PORT:
6113 case PCI_DEVICE_ID_LSI_CRUSADER_4PORT:
6114 instance->adapter_type = VENTURA_SERIES;
6115 break;
6116 case PCI_DEVICE_ID_LSI_FUSION:
6117 case PCI_DEVICE_ID_LSI_PLASMA:
6118 instance->adapter_type = THUNDERBOLT_SERIES;
6119 break;
6120 case PCI_DEVICE_ID_LSI_INVADER:
6121 case PCI_DEVICE_ID_LSI_INTRUDER:
6122 case PCI_DEVICE_ID_LSI_INTRUDER_24:
6123 case PCI_DEVICE_ID_LSI_CUTLASS_52:
6124 case PCI_DEVICE_ID_LSI_CUTLASS_53:
6125 case PCI_DEVICE_ID_LSI_FURY:
6126 instance->adapter_type = INVADER_SERIES;
6127 break;
6128 default: /* For all other supported controllers */
6129 instance->adapter_type = MFI_SERIES;
6130 break;
6131 }
6132 }
6133 }
6134
megasas_alloc_mfi_ctrl_mem(struct megasas_instance * instance)6135 static inline int megasas_alloc_mfi_ctrl_mem(struct megasas_instance *instance)
6136 {
6137 instance->producer = pci_alloc_consistent(instance->pdev, sizeof(u32),
6138 &instance->producer_h);
6139 instance->consumer = pci_alloc_consistent(instance->pdev, sizeof(u32),
6140 &instance->consumer_h);
6141
6142 if (!instance->producer || !instance->consumer) {
6143 dev_err(&instance->pdev->dev,
6144 "Failed to allocate memory for producer, consumer\n");
6145 return -1;
6146 }
6147
6148 *instance->producer = 0;
6149 *instance->consumer = 0;
6150 return 0;
6151 }
6152
6153 /**
6154 * megasas_alloc_ctrl_mem - Allocate per controller memory for core data
6155 * structures which are not common across MFI
6156 * adapters and fusion adapters.
6157 * For MFI based adapters, allocate producer and
6158 * consumer buffers. For fusion adapters, allocate
6159 * memory for fusion context.
6160 * @instance: Adapter soft state
6161 * return: 0 for SUCCESS
6162 */
megasas_alloc_ctrl_mem(struct megasas_instance * instance)6163 static int megasas_alloc_ctrl_mem(struct megasas_instance *instance)
6164 {
6165 instance->reply_map = kcalloc(nr_cpu_ids, sizeof(unsigned int),
6166 GFP_KERNEL);
6167 if (!instance->reply_map)
6168 return -ENOMEM;
6169
6170 switch (instance->adapter_type) {
6171 case MFI_SERIES:
6172 if (megasas_alloc_mfi_ctrl_mem(instance))
6173 goto fail;
6174 break;
6175 case VENTURA_SERIES:
6176 case THUNDERBOLT_SERIES:
6177 case INVADER_SERIES:
6178 if (megasas_alloc_fusion_context(instance))
6179 goto fail;
6180 break;
6181 }
6182
6183 return 0;
6184 fail:
6185 kfree(instance->reply_map);
6186 instance->reply_map = NULL;
6187 return -ENOMEM;
6188 }
6189
6190 /*
6191 * megasas_free_ctrl_mem - Free fusion context for fusion adapters and
6192 * producer, consumer buffers for MFI adapters
6193 *
6194 * @instance - Adapter soft instance
6195 *
6196 */
megasas_free_ctrl_mem(struct megasas_instance * instance)6197 static inline void megasas_free_ctrl_mem(struct megasas_instance *instance)
6198 {
6199 kfree(instance->reply_map);
6200 if (instance->adapter_type == MFI_SERIES) {
6201 if (instance->producer)
6202 pci_free_consistent(instance->pdev, sizeof(u32),
6203 instance->producer,
6204 instance->producer_h);
6205 if (instance->consumer)
6206 pci_free_consistent(instance->pdev, sizeof(u32),
6207 instance->consumer,
6208 instance->consumer_h);
6209 } else {
6210 megasas_free_fusion_context(instance);
6211 }
6212 }
6213
6214 /**
6215 * megasas_alloc_ctrl_dma_buffers - Allocate consistent DMA buffers during
6216 * driver load time
6217 *
6218 * @instance- Adapter soft instance
6219 * @return- O for SUCCESS
6220 */
6221 static inline
megasas_alloc_ctrl_dma_buffers(struct megasas_instance * instance)6222 int megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance)
6223 {
6224 struct pci_dev *pdev = instance->pdev;
6225 struct fusion_context *fusion = instance->ctrl_context;
6226
6227 instance->evt_detail =
6228 pci_alloc_consistent(pdev,
6229 sizeof(struct megasas_evt_detail),
6230 &instance->evt_detail_h);
6231
6232 if (!instance->evt_detail) {
6233 dev_err(&instance->pdev->dev,
6234 "Failed to allocate event detail buffer\n");
6235 return -ENOMEM;
6236 }
6237
6238 if (fusion) {
6239 fusion->ioc_init_request =
6240 dma_alloc_coherent(&pdev->dev,
6241 sizeof(struct MPI2_IOC_INIT_REQUEST),
6242 &fusion->ioc_init_request_phys,
6243 GFP_KERNEL);
6244
6245 if (!fusion->ioc_init_request) {
6246 dev_err(&pdev->dev,
6247 "Failed to allocate PD list buffer\n");
6248 return -ENOMEM;
6249 }
6250 }
6251
6252 instance->pd_list_buf =
6253 pci_alloc_consistent(pdev,
6254 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
6255 &instance->pd_list_buf_h);
6256
6257 if (!instance->pd_list_buf) {
6258 dev_err(&pdev->dev, "Failed to allocate PD list buffer\n");
6259 return -ENOMEM;
6260 }
6261
6262 instance->ctrl_info_buf =
6263 pci_alloc_consistent(pdev,
6264 sizeof(struct megasas_ctrl_info),
6265 &instance->ctrl_info_buf_h);
6266
6267 if (!instance->ctrl_info_buf) {
6268 dev_err(&pdev->dev,
6269 "Failed to allocate controller info buffer\n");
6270 return -ENOMEM;
6271 }
6272
6273 instance->ld_list_buf =
6274 pci_alloc_consistent(pdev,
6275 sizeof(struct MR_LD_LIST),
6276 &instance->ld_list_buf_h);
6277
6278 if (!instance->ld_list_buf) {
6279 dev_err(&pdev->dev, "Failed to allocate LD list buffer\n");
6280 return -ENOMEM;
6281 }
6282
6283 instance->ld_targetid_list_buf =
6284 pci_alloc_consistent(pdev,
6285 sizeof(struct MR_LD_TARGETID_LIST),
6286 &instance->ld_targetid_list_buf_h);
6287
6288 if (!instance->ld_targetid_list_buf) {
6289 dev_err(&pdev->dev,
6290 "Failed to allocate LD targetid list buffer\n");
6291 return -ENOMEM;
6292 }
6293
6294 if (!reset_devices) {
6295 instance->system_info_buf =
6296 pci_alloc_consistent(pdev,
6297 sizeof(struct MR_DRV_SYSTEM_INFO),
6298 &instance->system_info_h);
6299 instance->pd_info =
6300 pci_alloc_consistent(pdev,
6301 sizeof(struct MR_PD_INFO),
6302 &instance->pd_info_h);
6303 instance->tgt_prop =
6304 pci_alloc_consistent(pdev,
6305 sizeof(struct MR_TARGET_PROPERTIES),
6306 &instance->tgt_prop_h);
6307 instance->crash_dump_buf =
6308 pci_alloc_consistent(pdev,
6309 CRASH_DMA_BUF_SIZE,
6310 &instance->crash_dump_h);
6311
6312 if (!instance->system_info_buf)
6313 dev_err(&instance->pdev->dev,
6314 "Failed to allocate system info buffer\n");
6315
6316 if (!instance->pd_info)
6317 dev_err(&instance->pdev->dev,
6318 "Failed to allocate pd_info buffer\n");
6319
6320 if (!instance->tgt_prop)
6321 dev_err(&instance->pdev->dev,
6322 "Failed to allocate tgt_prop buffer\n");
6323
6324 if (!instance->crash_dump_buf)
6325 dev_err(&instance->pdev->dev,
6326 "Failed to allocate crash dump buffer\n");
6327 }
6328
6329 return 0;
6330 }
6331
6332 /*
6333 * megasas_free_ctrl_dma_buffers - Free consistent DMA buffers allocated
6334 * during driver load time
6335 *
6336 * @instance- Adapter soft instance
6337 *
6338 */
6339 static inline
megasas_free_ctrl_dma_buffers(struct megasas_instance * instance)6340 void megasas_free_ctrl_dma_buffers(struct megasas_instance *instance)
6341 {
6342 struct pci_dev *pdev = instance->pdev;
6343 struct fusion_context *fusion = instance->ctrl_context;
6344
6345 if (instance->evt_detail)
6346 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
6347 instance->evt_detail,
6348 instance->evt_detail_h);
6349
6350 if (fusion && fusion->ioc_init_request)
6351 dma_free_coherent(&pdev->dev,
6352 sizeof(struct MPI2_IOC_INIT_REQUEST),
6353 fusion->ioc_init_request,
6354 fusion->ioc_init_request_phys);
6355
6356 if (instance->pd_list_buf)
6357 pci_free_consistent(pdev,
6358 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
6359 instance->pd_list_buf,
6360 instance->pd_list_buf_h);
6361
6362 if (instance->ld_list_buf)
6363 pci_free_consistent(pdev, sizeof(struct MR_LD_LIST),
6364 instance->ld_list_buf,
6365 instance->ld_list_buf_h);
6366
6367 if (instance->ld_targetid_list_buf)
6368 pci_free_consistent(pdev, sizeof(struct MR_LD_TARGETID_LIST),
6369 instance->ld_targetid_list_buf,
6370 instance->ld_targetid_list_buf_h);
6371
6372 if (instance->ctrl_info_buf)
6373 pci_free_consistent(pdev, sizeof(struct megasas_ctrl_info),
6374 instance->ctrl_info_buf,
6375 instance->ctrl_info_buf_h);
6376
6377 if (instance->system_info_buf)
6378 pci_free_consistent(pdev, sizeof(struct MR_DRV_SYSTEM_INFO),
6379 instance->system_info_buf,
6380 instance->system_info_h);
6381
6382 if (instance->pd_info)
6383 pci_free_consistent(pdev, sizeof(struct MR_PD_INFO),
6384 instance->pd_info, instance->pd_info_h);
6385
6386 if (instance->tgt_prop)
6387 pci_free_consistent(pdev, sizeof(struct MR_TARGET_PROPERTIES),
6388 instance->tgt_prop, instance->tgt_prop_h);
6389
6390 if (instance->crash_dump_buf)
6391 pci_free_consistent(pdev, CRASH_DMA_BUF_SIZE,
6392 instance->crash_dump_buf,
6393 instance->crash_dump_h);
6394 }
6395
6396 /*
6397 * megasas_init_ctrl_params - Initialize controller's instance
6398 * parameters before FW init
6399 * @instance - Adapter soft instance
6400 * @return - void
6401 */
megasas_init_ctrl_params(struct megasas_instance * instance)6402 static inline void megasas_init_ctrl_params(struct megasas_instance *instance)
6403 {
6404 instance->fw_crash_state = UNAVAILABLE;
6405
6406 megasas_poll_wait_aen = 0;
6407 instance->issuepend_done = 1;
6408 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
6409
6410 /*
6411 * Initialize locks and queues
6412 */
6413 INIT_LIST_HEAD(&instance->cmd_pool);
6414 INIT_LIST_HEAD(&instance->internal_reset_pending_q);
6415
6416 atomic_set(&instance->fw_outstanding, 0);
6417
6418 init_waitqueue_head(&instance->int_cmd_wait_q);
6419 init_waitqueue_head(&instance->abort_cmd_wait_q);
6420
6421 spin_lock_init(&instance->crashdump_lock);
6422 spin_lock_init(&instance->mfi_pool_lock);
6423 spin_lock_init(&instance->hba_lock);
6424 spin_lock_init(&instance->stream_lock);
6425 spin_lock_init(&instance->completion_lock);
6426
6427 mutex_init(&instance->reset_mutex);
6428
6429 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
6430 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY))
6431 instance->flag_ieee = 1;
6432
6433 megasas_dbg_lvl = 0;
6434 instance->flag = 0;
6435 instance->unload = 1;
6436 instance->last_time = 0;
6437 instance->disableOnlineCtrlReset = 1;
6438 instance->UnevenSpanSupport = 0;
6439
6440 if (instance->adapter_type != MFI_SERIES) {
6441 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq);
6442 INIT_WORK(&instance->crash_init, megasas_fusion_crash_dump_wq);
6443 } else {
6444 INIT_WORK(&instance->work_init, process_fw_state_change_wq);
6445 }
6446 }
6447
6448 /**
6449 * megasas_probe_one - PCI hotplug entry point
6450 * @pdev: PCI device structure
6451 * @id: PCI ids of supported hotplugged adapter
6452 */
megasas_probe_one(struct pci_dev * pdev,const struct pci_device_id * id)6453 static int megasas_probe_one(struct pci_dev *pdev,
6454 const struct pci_device_id *id)
6455 {
6456 int rval, pos;
6457 struct Scsi_Host *host;
6458 struct megasas_instance *instance;
6459 u16 control = 0;
6460
6461 /* Reset MSI-X in the kdump kernel */
6462 if (reset_devices) {
6463 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
6464 if (pos) {
6465 pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS,
6466 &control);
6467 if (control & PCI_MSIX_FLAGS_ENABLE) {
6468 dev_info(&pdev->dev, "resetting MSI-X\n");
6469 pci_write_config_word(pdev,
6470 pos + PCI_MSIX_FLAGS,
6471 control &
6472 ~PCI_MSIX_FLAGS_ENABLE);
6473 }
6474 }
6475 }
6476
6477 /*
6478 * PCI prepping: enable device set bus mastering and dma mask
6479 */
6480 rval = pci_enable_device_mem(pdev);
6481
6482 if (rval) {
6483 return rval;
6484 }
6485
6486 pci_set_master(pdev);
6487
6488 host = scsi_host_alloc(&megasas_template,
6489 sizeof(struct megasas_instance));
6490
6491 if (!host) {
6492 dev_printk(KERN_DEBUG, &pdev->dev, "scsi_host_alloc failed\n");
6493 goto fail_alloc_instance;
6494 }
6495
6496 instance = (struct megasas_instance *)host->hostdata;
6497 memset(instance, 0, sizeof(*instance));
6498 atomic_set(&instance->fw_reset_no_pci_access, 0);
6499
6500 /*
6501 * Initialize PCI related and misc parameters
6502 */
6503 instance->pdev = pdev;
6504 instance->host = host;
6505 instance->unique_id = pdev->bus->number << 8 | pdev->devfn;
6506 instance->init_id = MEGASAS_DEFAULT_INIT_ID;
6507
6508 megasas_set_adapter_type(instance);
6509
6510 /*
6511 * Initialize MFI Firmware
6512 */
6513 if (megasas_init_fw(instance))
6514 goto fail_init_mfi;
6515
6516 if (instance->requestorId) {
6517 if (instance->PlasmaFW111) {
6518 instance->vf_affiliation_111 =
6519 pci_alloc_consistent(pdev, sizeof(struct MR_LD_VF_AFFILIATION_111),
6520 &instance->vf_affiliation_111_h);
6521 if (!instance->vf_affiliation_111)
6522 dev_warn(&pdev->dev, "Can't allocate "
6523 "memory for VF affiliation buffer\n");
6524 } else {
6525 instance->vf_affiliation =
6526 pci_alloc_consistent(pdev,
6527 (MAX_LOGICAL_DRIVES + 1) *
6528 sizeof(struct MR_LD_VF_AFFILIATION),
6529 &instance->vf_affiliation_h);
6530 if (!instance->vf_affiliation)
6531 dev_warn(&pdev->dev, "Can't allocate "
6532 "memory for VF affiliation buffer\n");
6533 }
6534 }
6535
6536 /*
6537 * Store instance in PCI softstate
6538 */
6539 pci_set_drvdata(pdev, instance);
6540
6541 /*
6542 * Add this controller to megasas_mgmt_info structure so that it
6543 * can be exported to management applications
6544 */
6545 megasas_mgmt_info.count++;
6546 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance;
6547 megasas_mgmt_info.max_index++;
6548
6549 /*
6550 * Register with SCSI mid-layer
6551 */
6552 if (megasas_io_attach(instance))
6553 goto fail_io_attach;
6554
6555 instance->unload = 0;
6556 /*
6557 * Trigger SCSI to scan our drives
6558 */
6559 scsi_scan_host(host);
6560
6561 /*
6562 * Initiate AEN (Asynchronous Event Notification)
6563 */
6564 if (megasas_start_aen(instance)) {
6565 dev_printk(KERN_DEBUG, &pdev->dev, "start aen failed\n");
6566 goto fail_start_aen;
6567 }
6568
6569 /* Get current SR-IOV LD/VF affiliation */
6570 if (instance->requestorId)
6571 megasas_get_ld_vf_affiliation(instance, 1);
6572
6573 return 0;
6574
6575 fail_start_aen:
6576 fail_io_attach:
6577 megasas_mgmt_info.count--;
6578 megasas_mgmt_info.max_index--;
6579 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL;
6580
6581 instance->instancet->disable_intr(instance);
6582 megasas_destroy_irqs(instance);
6583
6584 if (instance->adapter_type != MFI_SERIES)
6585 megasas_release_fusion(instance);
6586 else
6587 megasas_release_mfi(instance);
6588 if (instance->msix_vectors)
6589 pci_free_irq_vectors(instance->pdev);
6590 fail_init_mfi:
6591 scsi_host_put(host);
6592 fail_alloc_instance:
6593 pci_disable_device(pdev);
6594
6595 return -ENODEV;
6596 }
6597
6598 /**
6599 * megasas_flush_cache - Requests FW to flush all its caches
6600 * @instance: Adapter soft state
6601 */
megasas_flush_cache(struct megasas_instance * instance)6602 static void megasas_flush_cache(struct megasas_instance *instance)
6603 {
6604 struct megasas_cmd *cmd;
6605 struct megasas_dcmd_frame *dcmd;
6606
6607 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
6608 return;
6609
6610 cmd = megasas_get_cmd(instance);
6611
6612 if (!cmd)
6613 return;
6614
6615 dcmd = &cmd->frame->dcmd;
6616
6617 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6618
6619 dcmd->cmd = MFI_CMD_DCMD;
6620 dcmd->cmd_status = 0x0;
6621 dcmd->sge_count = 0;
6622 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
6623 dcmd->timeout = 0;
6624 dcmd->pad_0 = 0;
6625 dcmd->data_xfer_len = 0;
6626 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH);
6627 dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE;
6628
6629 if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
6630 != DCMD_SUCCESS) {
6631 dev_err(&instance->pdev->dev,
6632 "return from %s %d\n", __func__, __LINE__);
6633 return;
6634 }
6635
6636 megasas_return_cmd(instance, cmd);
6637 }
6638
6639 /**
6640 * megasas_shutdown_controller - Instructs FW to shutdown the controller
6641 * @instance: Adapter soft state
6642 * @opcode: Shutdown/Hibernate
6643 */
megasas_shutdown_controller(struct megasas_instance * instance,u32 opcode)6644 static void megasas_shutdown_controller(struct megasas_instance *instance,
6645 u32 opcode)
6646 {
6647 struct megasas_cmd *cmd;
6648 struct megasas_dcmd_frame *dcmd;
6649
6650 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
6651 return;
6652
6653 cmd = megasas_get_cmd(instance);
6654
6655 if (!cmd)
6656 return;
6657
6658 if (instance->aen_cmd)
6659 megasas_issue_blocked_abort_cmd(instance,
6660 instance->aen_cmd, MFI_IO_TIMEOUT_SECS);
6661 if (instance->map_update_cmd)
6662 megasas_issue_blocked_abort_cmd(instance,
6663 instance->map_update_cmd, MFI_IO_TIMEOUT_SECS);
6664 if (instance->jbod_seq_cmd)
6665 megasas_issue_blocked_abort_cmd(instance,
6666 instance->jbod_seq_cmd, MFI_IO_TIMEOUT_SECS);
6667
6668 dcmd = &cmd->frame->dcmd;
6669
6670 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6671
6672 dcmd->cmd = MFI_CMD_DCMD;
6673 dcmd->cmd_status = 0x0;
6674 dcmd->sge_count = 0;
6675 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
6676 dcmd->timeout = 0;
6677 dcmd->pad_0 = 0;
6678 dcmd->data_xfer_len = 0;
6679 dcmd->opcode = cpu_to_le32(opcode);
6680
6681 if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
6682 != DCMD_SUCCESS) {
6683 dev_err(&instance->pdev->dev,
6684 "return from %s %d\n", __func__, __LINE__);
6685 return;
6686 }
6687
6688 megasas_return_cmd(instance, cmd);
6689 }
6690
6691 #ifdef CONFIG_PM
6692 /**
6693 * megasas_suspend - driver suspend entry point
6694 * @pdev: PCI device structure
6695 * @state: PCI power state to suspend routine
6696 */
6697 static int
megasas_suspend(struct pci_dev * pdev,pm_message_t state)6698 megasas_suspend(struct pci_dev *pdev, pm_message_t state)
6699 {
6700 struct Scsi_Host *host;
6701 struct megasas_instance *instance;
6702
6703 instance = pci_get_drvdata(pdev);
6704 host = instance->host;
6705 instance->unload = 1;
6706
6707 /* Shutdown SR-IOV heartbeat timer */
6708 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
6709 del_timer_sync(&instance->sriov_heartbeat_timer);
6710
6711 megasas_flush_cache(instance);
6712 megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN);
6713
6714 /* cancel the delayed work if this work still in queue */
6715 if (instance->ev != NULL) {
6716 struct megasas_aen_event *ev = instance->ev;
6717 cancel_delayed_work_sync(&ev->hotplug_work);
6718 instance->ev = NULL;
6719 }
6720
6721 tasklet_kill(&instance->isr_tasklet);
6722
6723 pci_set_drvdata(instance->pdev, instance);
6724 instance->instancet->disable_intr(instance);
6725
6726 megasas_destroy_irqs(instance);
6727
6728 if (instance->msix_vectors)
6729 pci_free_irq_vectors(instance->pdev);
6730
6731 pci_save_state(pdev);
6732 pci_disable_device(pdev);
6733
6734 pci_set_power_state(pdev, pci_choose_state(pdev, state));
6735
6736 return 0;
6737 }
6738
6739 /**
6740 * megasas_resume- driver resume entry point
6741 * @pdev: PCI device structure
6742 */
6743 static int
megasas_resume(struct pci_dev * pdev)6744 megasas_resume(struct pci_dev *pdev)
6745 {
6746 int rval;
6747 struct Scsi_Host *host;
6748 struct megasas_instance *instance;
6749 int irq_flags = PCI_IRQ_LEGACY;
6750
6751 instance = pci_get_drvdata(pdev);
6752 host = instance->host;
6753 pci_set_power_state(pdev, PCI_D0);
6754 pci_enable_wake(pdev, PCI_D0, 0);
6755 pci_restore_state(pdev);
6756
6757 /*
6758 * PCI prepping: enable device set bus mastering and dma mask
6759 */
6760 rval = pci_enable_device_mem(pdev);
6761
6762 if (rval) {
6763 dev_err(&pdev->dev, "Enable device failed\n");
6764 return rval;
6765 }
6766
6767 pci_set_master(pdev);
6768
6769 /*
6770 * We expect the FW state to be READY
6771 */
6772 if (megasas_transition_to_ready(instance, 0))
6773 goto fail_ready_state;
6774
6775 if (megasas_set_dma_mask(instance))
6776 goto fail_set_dma_mask;
6777
6778 /*
6779 * Initialize MFI Firmware
6780 */
6781
6782 atomic_set(&instance->fw_outstanding, 0);
6783 atomic_set(&instance->ldio_outstanding, 0);
6784
6785 /* Now re-enable MSI-X */
6786 if (instance->msix_vectors) {
6787 irq_flags = PCI_IRQ_MSIX;
6788 if (smp_affinity_enable)
6789 irq_flags |= PCI_IRQ_AFFINITY;
6790 }
6791 rval = pci_alloc_irq_vectors(instance->pdev, 1,
6792 instance->msix_vectors ?
6793 instance->msix_vectors : 1, irq_flags);
6794 if (rval < 0)
6795 goto fail_reenable_msix;
6796
6797 megasas_setup_reply_map(instance);
6798
6799 if (instance->adapter_type != MFI_SERIES) {
6800 megasas_reset_reply_desc(instance);
6801 if (megasas_ioc_init_fusion(instance)) {
6802 megasas_free_cmds(instance);
6803 megasas_free_cmds_fusion(instance);
6804 goto fail_init_mfi;
6805 }
6806 if (!megasas_get_map_info(instance))
6807 megasas_sync_map_info(instance);
6808 } else {
6809 *instance->producer = 0;
6810 *instance->consumer = 0;
6811 if (megasas_issue_init_mfi(instance))
6812 goto fail_init_mfi;
6813 }
6814
6815 if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS)
6816 goto fail_init_mfi;
6817
6818 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
6819 (unsigned long)instance);
6820
6821 if (instance->msix_vectors ?
6822 megasas_setup_irqs_msix(instance, 0) :
6823 megasas_setup_irqs_ioapic(instance))
6824 goto fail_init_mfi;
6825
6826 /* Re-launch SR-IOV heartbeat timer */
6827 if (instance->requestorId) {
6828 if (!megasas_sriov_start_heartbeat(instance, 0))
6829 megasas_start_timer(instance);
6830 else {
6831 instance->skip_heartbeat_timer_del = 1;
6832 goto fail_init_mfi;
6833 }
6834 }
6835
6836 instance->instancet->enable_intr(instance);
6837 megasas_setup_jbod_map(instance);
6838 instance->unload = 0;
6839
6840 /*
6841 * Initiate AEN (Asynchronous Event Notification)
6842 */
6843 if (megasas_start_aen(instance))
6844 dev_err(&instance->pdev->dev, "Start AEN failed\n");
6845
6846 return 0;
6847
6848 fail_init_mfi:
6849 megasas_free_ctrl_dma_buffers(instance);
6850 megasas_free_ctrl_mem(instance);
6851 scsi_host_put(host);
6852
6853 fail_reenable_msix:
6854 fail_set_dma_mask:
6855 fail_ready_state:
6856
6857 pci_disable_device(pdev);
6858
6859 return -ENODEV;
6860 }
6861 #else
6862 #define megasas_suspend NULL
6863 #define megasas_resume NULL
6864 #endif
6865
6866 static inline int
megasas_wait_for_adapter_operational(struct megasas_instance * instance)6867 megasas_wait_for_adapter_operational(struct megasas_instance *instance)
6868 {
6869 int wait_time = MEGASAS_RESET_WAIT_TIME * 2;
6870 int i;
6871 u8 adp_state;
6872
6873 for (i = 0; i < wait_time; i++) {
6874 adp_state = atomic_read(&instance->adprecovery);
6875 if ((adp_state == MEGASAS_HBA_OPERATIONAL) ||
6876 (adp_state == MEGASAS_HW_CRITICAL_ERROR))
6877 break;
6878
6879 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL))
6880 dev_notice(&instance->pdev->dev, "waiting for controller reset to finish\n");
6881
6882 msleep(1000);
6883 }
6884
6885 if (adp_state != MEGASAS_HBA_OPERATIONAL) {
6886 dev_info(&instance->pdev->dev,
6887 "%s HBA failed to become operational, adp_state %d\n",
6888 __func__, adp_state);
6889 return 1;
6890 }
6891
6892 return 0;
6893 }
6894
6895 /**
6896 * megasas_detach_one - PCI hot"un"plug entry point
6897 * @pdev: PCI device structure
6898 */
megasas_detach_one(struct pci_dev * pdev)6899 static void megasas_detach_one(struct pci_dev *pdev)
6900 {
6901 int i;
6902 struct Scsi_Host *host;
6903 struct megasas_instance *instance;
6904 struct fusion_context *fusion;
6905 u32 pd_seq_map_sz;
6906
6907 instance = pci_get_drvdata(pdev);
6908 host = instance->host;
6909 fusion = instance->ctrl_context;
6910
6911 /* Shutdown SR-IOV heartbeat timer */
6912 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
6913 del_timer_sync(&instance->sriov_heartbeat_timer);
6914
6915 if (instance->fw_crash_state != UNAVAILABLE)
6916 megasas_free_host_crash_buffer(instance);
6917 scsi_remove_host(instance->host);
6918 instance->unload = 1;
6919
6920 if (megasas_wait_for_adapter_operational(instance))
6921 goto skip_firing_dcmds;
6922
6923 megasas_flush_cache(instance);
6924 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
6925
6926 skip_firing_dcmds:
6927 /* cancel the delayed work if this work still in queue*/
6928 if (instance->ev != NULL) {
6929 struct megasas_aen_event *ev = instance->ev;
6930 cancel_delayed_work_sync(&ev->hotplug_work);
6931 instance->ev = NULL;
6932 }
6933
6934 /* cancel all wait events */
6935 wake_up_all(&instance->int_cmd_wait_q);
6936
6937 tasklet_kill(&instance->isr_tasklet);
6938
6939 /*
6940 * Take the instance off the instance array. Note that we will not
6941 * decrement the max_index. We let this array be sparse array
6942 */
6943 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
6944 if (megasas_mgmt_info.instance[i] == instance) {
6945 megasas_mgmt_info.count--;
6946 megasas_mgmt_info.instance[i] = NULL;
6947
6948 break;
6949 }
6950 }
6951
6952 instance->instancet->disable_intr(instance);
6953
6954 megasas_destroy_irqs(instance);
6955
6956 if (instance->msix_vectors)
6957 pci_free_irq_vectors(instance->pdev);
6958
6959 if (instance->adapter_type == VENTURA_SERIES) {
6960 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i)
6961 kfree(fusion->stream_detect_by_ld[i]);
6962 kfree(fusion->stream_detect_by_ld);
6963 fusion->stream_detect_by_ld = NULL;
6964 }
6965
6966
6967 if (instance->adapter_type != MFI_SERIES) {
6968 megasas_release_fusion(instance);
6969 pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) +
6970 (sizeof(struct MR_PD_CFG_SEQ) *
6971 (MAX_PHYSICAL_DEVICES - 1));
6972 for (i = 0; i < 2 ; i++) {
6973 if (fusion->ld_map[i])
6974 dma_free_coherent(&instance->pdev->dev,
6975 fusion->max_map_sz,
6976 fusion->ld_map[i],
6977 fusion->ld_map_phys[i]);
6978 if (fusion->ld_drv_map[i]) {
6979 if (is_vmalloc_addr(fusion->ld_drv_map[i]))
6980 vfree(fusion->ld_drv_map[i]);
6981 else
6982 free_pages((ulong)fusion->ld_drv_map[i],
6983 fusion->drv_map_pages);
6984 }
6985
6986 if (fusion->pd_seq_sync[i])
6987 dma_free_coherent(&instance->pdev->dev,
6988 pd_seq_map_sz,
6989 fusion->pd_seq_sync[i],
6990 fusion->pd_seq_phys[i]);
6991 }
6992 } else {
6993 megasas_release_mfi(instance);
6994 }
6995
6996 if (instance->vf_affiliation)
6997 pci_free_consistent(pdev, (MAX_LOGICAL_DRIVES + 1) *
6998 sizeof(struct MR_LD_VF_AFFILIATION),
6999 instance->vf_affiliation,
7000 instance->vf_affiliation_h);
7001
7002 if (instance->vf_affiliation_111)
7003 pci_free_consistent(pdev,
7004 sizeof(struct MR_LD_VF_AFFILIATION_111),
7005 instance->vf_affiliation_111,
7006 instance->vf_affiliation_111_h);
7007
7008 if (instance->hb_host_mem)
7009 pci_free_consistent(pdev, sizeof(struct MR_CTRL_HB_HOST_MEM),
7010 instance->hb_host_mem,
7011 instance->hb_host_mem_h);
7012
7013 megasas_free_ctrl_dma_buffers(instance);
7014
7015 megasas_free_ctrl_mem(instance);
7016
7017 scsi_host_put(host);
7018
7019 pci_disable_device(pdev);
7020 }
7021
7022 /**
7023 * megasas_shutdown - Shutdown entry point
7024 * @device: Generic device structure
7025 */
megasas_shutdown(struct pci_dev * pdev)7026 static void megasas_shutdown(struct pci_dev *pdev)
7027 {
7028 struct megasas_instance *instance = pci_get_drvdata(pdev);
7029
7030 instance->unload = 1;
7031
7032 if (megasas_wait_for_adapter_operational(instance))
7033 goto skip_firing_dcmds;
7034
7035 megasas_flush_cache(instance);
7036 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
7037
7038 skip_firing_dcmds:
7039 instance->instancet->disable_intr(instance);
7040 megasas_destroy_irqs(instance);
7041
7042 if (instance->msix_vectors)
7043 pci_free_irq_vectors(instance->pdev);
7044 }
7045
7046 /**
7047 * megasas_mgmt_open - char node "open" entry point
7048 */
megasas_mgmt_open(struct inode * inode,struct file * filep)7049 static int megasas_mgmt_open(struct inode *inode, struct file *filep)
7050 {
7051 /*
7052 * Allow only those users with admin rights
7053 */
7054 if (!capable(CAP_SYS_ADMIN))
7055 return -EACCES;
7056
7057 return 0;
7058 }
7059
7060 /**
7061 * megasas_mgmt_fasync - Async notifier registration from applications
7062 *
7063 * This function adds the calling process to a driver global queue. When an
7064 * event occurs, SIGIO will be sent to all processes in this queue.
7065 */
megasas_mgmt_fasync(int fd,struct file * filep,int mode)7066 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode)
7067 {
7068 int rc;
7069
7070 mutex_lock(&megasas_async_queue_mutex);
7071
7072 rc = fasync_helper(fd, filep, mode, &megasas_async_queue);
7073
7074 mutex_unlock(&megasas_async_queue_mutex);
7075
7076 if (rc >= 0) {
7077 /* For sanity check when we get ioctl */
7078 filep->private_data = filep;
7079 return 0;
7080 }
7081
7082 printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc);
7083
7084 return rc;
7085 }
7086
7087 /**
7088 * megasas_mgmt_poll - char node "poll" entry point
7089 * */
megasas_mgmt_poll(struct file * file,poll_table * wait)7090 static __poll_t megasas_mgmt_poll(struct file *file, poll_table *wait)
7091 {
7092 __poll_t mask;
7093 unsigned long flags;
7094
7095 poll_wait(file, &megasas_poll_wait, wait);
7096 spin_lock_irqsave(&poll_aen_lock, flags);
7097 if (megasas_poll_wait_aen)
7098 mask = (EPOLLIN | EPOLLRDNORM);
7099 else
7100 mask = 0;
7101 megasas_poll_wait_aen = 0;
7102 spin_unlock_irqrestore(&poll_aen_lock, flags);
7103 return mask;
7104 }
7105
7106 /*
7107 * megasas_set_crash_dump_params_ioctl:
7108 * Send CRASH_DUMP_MODE DCMD to all controllers
7109 * @cmd: MFI command frame
7110 */
7111
megasas_set_crash_dump_params_ioctl(struct megasas_cmd * cmd)7112 static int megasas_set_crash_dump_params_ioctl(struct megasas_cmd *cmd)
7113 {
7114 struct megasas_instance *local_instance;
7115 int i, error = 0;
7116 int crash_support;
7117
7118 crash_support = cmd->frame->dcmd.mbox.w[0];
7119
7120 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
7121 local_instance = megasas_mgmt_info.instance[i];
7122 if (local_instance && local_instance->crash_dump_drv_support) {
7123 if ((atomic_read(&local_instance->adprecovery) ==
7124 MEGASAS_HBA_OPERATIONAL) &&
7125 !megasas_set_crash_dump_params(local_instance,
7126 crash_support)) {
7127 local_instance->crash_dump_app_support =
7128 crash_support;
7129 dev_info(&local_instance->pdev->dev,
7130 "Application firmware crash "
7131 "dump mode set success\n");
7132 error = 0;
7133 } else {
7134 dev_info(&local_instance->pdev->dev,
7135 "Application firmware crash "
7136 "dump mode set failed\n");
7137 error = -1;
7138 }
7139 }
7140 }
7141 return error;
7142 }
7143
7144 /**
7145 * megasas_mgmt_fw_ioctl - Issues management ioctls to FW
7146 * @instance: Adapter soft state
7147 * @argp: User's ioctl packet
7148 */
7149 static int
megasas_mgmt_fw_ioctl(struct megasas_instance * instance,struct megasas_iocpacket __user * user_ioc,struct megasas_iocpacket * ioc)7150 megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
7151 struct megasas_iocpacket __user * user_ioc,
7152 struct megasas_iocpacket *ioc)
7153 {
7154 struct megasas_sge64 *kern_sge64 = NULL;
7155 struct megasas_sge32 *kern_sge32 = NULL;
7156 struct megasas_cmd *cmd;
7157 void *kbuff_arr[MAX_IOCTL_SGE];
7158 dma_addr_t buf_handle = 0;
7159 int error = 0, i;
7160 void *sense = NULL;
7161 dma_addr_t sense_handle;
7162 unsigned long *sense_ptr;
7163 u32 opcode = 0;
7164
7165 memset(kbuff_arr, 0, sizeof(kbuff_arr));
7166
7167 if (ioc->sge_count > MAX_IOCTL_SGE) {
7168 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SGE count [%d] > max limit [%d]\n",
7169 ioc->sge_count, MAX_IOCTL_SGE);
7170 return -EINVAL;
7171 }
7172
7173 if ((ioc->frame.hdr.cmd >= MFI_CMD_OP_COUNT) ||
7174 ((ioc->frame.hdr.cmd == MFI_CMD_NVME) &&
7175 !instance->support_nvme_passthru)) {
7176 dev_err(&instance->pdev->dev,
7177 "Received invalid ioctl command 0x%x\n",
7178 ioc->frame.hdr.cmd);
7179 return -ENOTSUPP;
7180 }
7181
7182 cmd = megasas_get_cmd(instance);
7183 if (!cmd) {
7184 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a cmd packet\n");
7185 return -ENOMEM;
7186 }
7187
7188 /*
7189 * User's IOCTL packet has 2 frames (maximum). Copy those two
7190 * frames into our cmd's frames. cmd->frame's context will get
7191 * overwritten when we copy from user's frames. So set that value
7192 * alone separately
7193 */
7194 memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE);
7195 cmd->frame->hdr.context = cpu_to_le32(cmd->index);
7196 cmd->frame->hdr.pad_0 = 0;
7197
7198 cmd->frame->hdr.flags &= (~MFI_FRAME_IEEE);
7199
7200 if (instance->consistent_mask_64bit)
7201 cmd->frame->hdr.flags |= cpu_to_le16((MFI_FRAME_SGL64 |
7202 MFI_FRAME_SENSE64));
7203 else
7204 cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_SGL64 |
7205 MFI_FRAME_SENSE64));
7206
7207 if (cmd->frame->hdr.cmd == MFI_CMD_DCMD)
7208 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
7209
7210 if (opcode == MR_DCMD_CTRL_SHUTDOWN) {
7211 if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS) {
7212 megasas_return_cmd(instance, cmd);
7213 return -1;
7214 }
7215 }
7216
7217 if (opcode == MR_DRIVER_SET_APP_CRASHDUMP_MODE) {
7218 error = megasas_set_crash_dump_params_ioctl(cmd);
7219 megasas_return_cmd(instance, cmd);
7220 return error;
7221 }
7222
7223 /*
7224 * The management interface between applications and the fw uses
7225 * MFI frames. E.g, RAID configuration changes, LD property changes
7226 * etc are accomplishes through different kinds of MFI frames. The
7227 * driver needs to care only about substituting user buffers with
7228 * kernel buffers in SGLs. The location of SGL is embedded in the
7229 * struct iocpacket itself.
7230 */
7231 if (instance->consistent_mask_64bit)
7232 kern_sge64 = (struct megasas_sge64 *)
7233 ((unsigned long)cmd->frame + ioc->sgl_off);
7234 else
7235 kern_sge32 = (struct megasas_sge32 *)
7236 ((unsigned long)cmd->frame + ioc->sgl_off);
7237
7238 /*
7239 * For each user buffer, create a mirror buffer and copy in
7240 */
7241 for (i = 0; i < ioc->sge_count; i++) {
7242 if (!ioc->sgl[i].iov_len)
7243 continue;
7244
7245 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev,
7246 ioc->sgl[i].iov_len,
7247 &buf_handle, GFP_KERNEL);
7248 if (!kbuff_arr[i]) {
7249 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc "
7250 "kernel SGL buffer for IOCTL\n");
7251 error = -ENOMEM;
7252 goto out;
7253 }
7254
7255 /*
7256 * We don't change the dma_coherent_mask, so
7257 * pci_alloc_consistent only returns 32bit addresses
7258 */
7259 if (instance->consistent_mask_64bit) {
7260 kern_sge64[i].phys_addr = cpu_to_le64(buf_handle);
7261 kern_sge64[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
7262 } else {
7263 kern_sge32[i].phys_addr = cpu_to_le32(buf_handle);
7264 kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
7265 }
7266
7267 /*
7268 * We created a kernel buffer corresponding to the
7269 * user buffer. Now copy in from the user buffer
7270 */
7271 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base,
7272 (u32) (ioc->sgl[i].iov_len))) {
7273 error = -EFAULT;
7274 goto out;
7275 }
7276 }
7277
7278 if (ioc->sense_len) {
7279 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len,
7280 &sense_handle, GFP_KERNEL);
7281 if (!sense) {
7282 error = -ENOMEM;
7283 goto out;
7284 }
7285
7286 sense_ptr =
7287 (unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off);
7288 if (instance->consistent_mask_64bit)
7289 *sense_ptr = cpu_to_le64(sense_handle);
7290 else
7291 *sense_ptr = cpu_to_le32(sense_handle);
7292 }
7293
7294 /*
7295 * Set the sync_cmd flag so that the ISR knows not to complete this
7296 * cmd to the SCSI mid-layer
7297 */
7298 cmd->sync_cmd = 1;
7299 if (megasas_issue_blocked_cmd(instance, cmd, 0) == DCMD_NOT_FIRED) {
7300 cmd->sync_cmd = 0;
7301 dev_err(&instance->pdev->dev,
7302 "return -EBUSY from %s %d cmd 0x%x opcode 0x%x cmd->cmd_status_drv 0x%x\n",
7303 __func__, __LINE__, cmd->frame->hdr.cmd, opcode,
7304 cmd->cmd_status_drv);
7305 return -EBUSY;
7306 }
7307
7308 cmd->sync_cmd = 0;
7309
7310 if (instance->unload == 1) {
7311 dev_info(&instance->pdev->dev, "Driver unload is in progress "
7312 "don't submit data to application\n");
7313 goto out;
7314 }
7315 /*
7316 * copy out the kernel buffers to user buffers
7317 */
7318 for (i = 0; i < ioc->sge_count; i++) {
7319 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i],
7320 ioc->sgl[i].iov_len)) {
7321 error = -EFAULT;
7322 goto out;
7323 }
7324 }
7325
7326 /*
7327 * copy out the sense
7328 */
7329 if (ioc->sense_len) {
7330 /*
7331 * sense_ptr points to the location that has the user
7332 * sense buffer address
7333 */
7334 sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw +
7335 ioc->sense_off);
7336
7337 if (copy_to_user((void __user *)((unsigned long)
7338 get_unaligned((unsigned long *)sense_ptr)),
7339 sense, ioc->sense_len)) {
7340 dev_err(&instance->pdev->dev, "Failed to copy out to user "
7341 "sense data\n");
7342 error = -EFAULT;
7343 goto out;
7344 }
7345 }
7346
7347 /*
7348 * copy the status codes returned by the fw
7349 */
7350 if (copy_to_user(&user_ioc->frame.hdr.cmd_status,
7351 &cmd->frame->hdr.cmd_status, sizeof(u8))) {
7352 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error copying out cmd_status\n");
7353 error = -EFAULT;
7354 }
7355
7356 out:
7357 if (sense) {
7358 dma_free_coherent(&instance->pdev->dev, ioc->sense_len,
7359 sense, sense_handle);
7360 }
7361
7362 for (i = 0; i < ioc->sge_count; i++) {
7363 if (kbuff_arr[i]) {
7364 if (instance->consistent_mask_64bit)
7365 dma_free_coherent(&instance->pdev->dev,
7366 le32_to_cpu(kern_sge64[i].length),
7367 kbuff_arr[i],
7368 le64_to_cpu(kern_sge64[i].phys_addr));
7369 else
7370 dma_free_coherent(&instance->pdev->dev,
7371 le32_to_cpu(kern_sge32[i].length),
7372 kbuff_arr[i],
7373 le32_to_cpu(kern_sge32[i].phys_addr));
7374 kbuff_arr[i] = NULL;
7375 }
7376 }
7377
7378 megasas_return_cmd(instance, cmd);
7379 return error;
7380 }
7381
megasas_mgmt_ioctl_fw(struct file * file,unsigned long arg)7382 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg)
7383 {
7384 struct megasas_iocpacket __user *user_ioc =
7385 (struct megasas_iocpacket __user *)arg;
7386 struct megasas_iocpacket *ioc;
7387 struct megasas_instance *instance;
7388 int error;
7389
7390 ioc = memdup_user(user_ioc, sizeof(*ioc));
7391 if (IS_ERR(ioc))
7392 return PTR_ERR(ioc);
7393
7394 instance = megasas_lookup_instance(ioc->host_no);
7395 if (!instance) {
7396 error = -ENODEV;
7397 goto out_kfree_ioc;
7398 }
7399
7400 /* Block ioctls in VF mode */
7401 if (instance->requestorId && !allow_vf_ioctls) {
7402 error = -ENODEV;
7403 goto out_kfree_ioc;
7404 }
7405
7406 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
7407 dev_err(&instance->pdev->dev, "Controller in crit error\n");
7408 error = -ENODEV;
7409 goto out_kfree_ioc;
7410 }
7411
7412 if (instance->unload == 1) {
7413 error = -ENODEV;
7414 goto out_kfree_ioc;
7415 }
7416
7417 if (down_interruptible(&instance->ioctl_sem)) {
7418 error = -ERESTARTSYS;
7419 goto out_kfree_ioc;
7420 }
7421
7422 if (megasas_wait_for_adapter_operational(instance)) {
7423 error = -ENODEV;
7424 goto out_up;
7425 }
7426
7427 error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc);
7428 out_up:
7429 up(&instance->ioctl_sem);
7430
7431 out_kfree_ioc:
7432 kfree(ioc);
7433 return error;
7434 }
7435
megasas_mgmt_ioctl_aen(struct file * file,unsigned long arg)7436 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg)
7437 {
7438 struct megasas_instance *instance;
7439 struct megasas_aen aen;
7440 int error;
7441
7442 if (file->private_data != file) {
7443 printk(KERN_DEBUG "megasas: fasync_helper was not "
7444 "called first\n");
7445 return -EINVAL;
7446 }
7447
7448 if (copy_from_user(&aen, (void __user *)arg, sizeof(aen)))
7449 return -EFAULT;
7450
7451 instance = megasas_lookup_instance(aen.host_no);
7452
7453 if (!instance)
7454 return -ENODEV;
7455
7456 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
7457 return -ENODEV;
7458 }
7459
7460 if (instance->unload == 1) {
7461 return -ENODEV;
7462 }
7463
7464 if (megasas_wait_for_adapter_operational(instance))
7465 return -ENODEV;
7466
7467 mutex_lock(&instance->reset_mutex);
7468 error = megasas_register_aen(instance, aen.seq_num,
7469 aen.class_locale_word);
7470 mutex_unlock(&instance->reset_mutex);
7471 return error;
7472 }
7473
7474 /**
7475 * megasas_mgmt_ioctl - char node ioctl entry point
7476 */
7477 static long
megasas_mgmt_ioctl(struct file * file,unsigned int cmd,unsigned long arg)7478 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
7479 {
7480 switch (cmd) {
7481 case MEGASAS_IOC_FIRMWARE:
7482 return megasas_mgmt_ioctl_fw(file, arg);
7483
7484 case MEGASAS_IOC_GET_AEN:
7485 return megasas_mgmt_ioctl_aen(file, arg);
7486 }
7487
7488 return -ENOTTY;
7489 }
7490
7491 #ifdef CONFIG_COMPAT
megasas_mgmt_compat_ioctl_fw(struct file * file,unsigned long arg)7492 static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg)
7493 {
7494 struct compat_megasas_iocpacket __user *cioc =
7495 (struct compat_megasas_iocpacket __user *)arg;
7496 struct megasas_iocpacket __user *ioc =
7497 compat_alloc_user_space(sizeof(struct megasas_iocpacket));
7498 int i;
7499 int error = 0;
7500 compat_uptr_t ptr;
7501 u32 local_sense_off;
7502 u32 local_sense_len;
7503 u32 user_sense_off;
7504
7505 if (clear_user(ioc, sizeof(*ioc)))
7506 return -EFAULT;
7507
7508 if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) ||
7509 copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) ||
7510 copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) ||
7511 copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) ||
7512 copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) ||
7513 copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32)))
7514 return -EFAULT;
7515
7516 /*
7517 * The sense_ptr is used in megasas_mgmt_fw_ioctl only when
7518 * sense_len is not null, so prepare the 64bit value under
7519 * the same condition.
7520 */
7521 if (get_user(local_sense_off, &ioc->sense_off) ||
7522 get_user(local_sense_len, &ioc->sense_len) ||
7523 get_user(user_sense_off, &cioc->sense_off))
7524 return -EFAULT;
7525
7526 if (local_sense_len) {
7527 void __user **sense_ioc_ptr =
7528 (void __user **)((u8 *)((unsigned long)&ioc->frame.raw) + local_sense_off);
7529 compat_uptr_t *sense_cioc_ptr =
7530 (compat_uptr_t *)(((unsigned long)&cioc->frame.raw) + user_sense_off);
7531 if (get_user(ptr, sense_cioc_ptr) ||
7532 put_user(compat_ptr(ptr), sense_ioc_ptr))
7533 return -EFAULT;
7534 }
7535
7536 for (i = 0; i < MAX_IOCTL_SGE; i++) {
7537 if (get_user(ptr, &cioc->sgl[i].iov_base) ||
7538 put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) ||
7539 copy_in_user(&ioc->sgl[i].iov_len,
7540 &cioc->sgl[i].iov_len, sizeof(compat_size_t)))
7541 return -EFAULT;
7542 }
7543
7544 error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc);
7545
7546 if (copy_in_user(&cioc->frame.hdr.cmd_status,
7547 &ioc->frame.hdr.cmd_status, sizeof(u8))) {
7548 printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n");
7549 return -EFAULT;
7550 }
7551 return error;
7552 }
7553
7554 static long
megasas_mgmt_compat_ioctl(struct file * file,unsigned int cmd,unsigned long arg)7555 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd,
7556 unsigned long arg)
7557 {
7558 switch (cmd) {
7559 case MEGASAS_IOC_FIRMWARE32:
7560 return megasas_mgmt_compat_ioctl_fw(file, arg);
7561 case MEGASAS_IOC_GET_AEN:
7562 return megasas_mgmt_ioctl_aen(file, arg);
7563 }
7564
7565 return -ENOTTY;
7566 }
7567 #endif
7568
7569 /*
7570 * File operations structure for management interface
7571 */
7572 static const struct file_operations megasas_mgmt_fops = {
7573 .owner = THIS_MODULE,
7574 .open = megasas_mgmt_open,
7575 .fasync = megasas_mgmt_fasync,
7576 .unlocked_ioctl = megasas_mgmt_ioctl,
7577 .poll = megasas_mgmt_poll,
7578 #ifdef CONFIG_COMPAT
7579 .compat_ioctl = megasas_mgmt_compat_ioctl,
7580 #endif
7581 .llseek = noop_llseek,
7582 };
7583
7584 /*
7585 * PCI hotplug support registration structure
7586 */
7587 static struct pci_driver megasas_pci_driver = {
7588
7589 .name = "megaraid_sas",
7590 .id_table = megasas_pci_table,
7591 .probe = megasas_probe_one,
7592 .remove = megasas_detach_one,
7593 .suspend = megasas_suspend,
7594 .resume = megasas_resume,
7595 .shutdown = megasas_shutdown,
7596 };
7597
7598 /*
7599 * Sysfs driver attributes
7600 */
version_show(struct device_driver * dd,char * buf)7601 static ssize_t version_show(struct device_driver *dd, char *buf)
7602 {
7603 return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n",
7604 MEGASAS_VERSION);
7605 }
7606 static DRIVER_ATTR_RO(version);
7607
release_date_show(struct device_driver * dd,char * buf)7608 static ssize_t release_date_show(struct device_driver *dd, char *buf)
7609 {
7610 return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n",
7611 MEGASAS_RELDATE);
7612 }
7613 static DRIVER_ATTR_RO(release_date);
7614
support_poll_for_event_show(struct device_driver * dd,char * buf)7615 static ssize_t support_poll_for_event_show(struct device_driver *dd, char *buf)
7616 {
7617 return sprintf(buf, "%u\n", support_poll_for_event);
7618 }
7619 static DRIVER_ATTR_RO(support_poll_for_event);
7620
support_device_change_show(struct device_driver * dd,char * buf)7621 static ssize_t support_device_change_show(struct device_driver *dd, char *buf)
7622 {
7623 return sprintf(buf, "%u\n", support_device_change);
7624 }
7625 static DRIVER_ATTR_RO(support_device_change);
7626
dbg_lvl_show(struct device_driver * dd,char * buf)7627 static ssize_t dbg_lvl_show(struct device_driver *dd, char *buf)
7628 {
7629 return sprintf(buf, "%u\n", megasas_dbg_lvl);
7630 }
7631
dbg_lvl_store(struct device_driver * dd,const char * buf,size_t count)7632 static ssize_t dbg_lvl_store(struct device_driver *dd, const char *buf,
7633 size_t count)
7634 {
7635 int retval = count;
7636
7637 if (sscanf(buf, "%u", &megasas_dbg_lvl) < 1) {
7638 printk(KERN_ERR "megasas: could not set dbg_lvl\n");
7639 retval = -EINVAL;
7640 }
7641 return retval;
7642 }
7643 static DRIVER_ATTR_RW(dbg_lvl);
7644
7645 static ssize_t
support_nvme_encapsulation_show(struct device_driver * dd,char * buf)7646 support_nvme_encapsulation_show(struct device_driver *dd, char *buf)
7647 {
7648 return sprintf(buf, "%u\n", support_nvme_encapsulation);
7649 }
7650
7651 static DRIVER_ATTR_RO(support_nvme_encapsulation);
7652
megasas_remove_scsi_device(struct scsi_device * sdev)7653 static inline void megasas_remove_scsi_device(struct scsi_device *sdev)
7654 {
7655 sdev_printk(KERN_INFO, sdev, "SCSI device is removed\n");
7656 scsi_remove_device(sdev);
7657 scsi_device_put(sdev);
7658 }
7659
7660 static void
megasas_aen_polling(struct work_struct * work)7661 megasas_aen_polling(struct work_struct *work)
7662 {
7663 struct megasas_aen_event *ev =
7664 container_of(work, struct megasas_aen_event, hotplug_work.work);
7665 struct megasas_instance *instance = ev->instance;
7666 union megasas_evt_class_locale class_locale;
7667 struct Scsi_Host *host;
7668 struct scsi_device *sdev1;
7669 u16 pd_index = 0;
7670 u16 ld_index = 0;
7671 int i, j, doscan = 0;
7672 u32 seq_num, wait_time = MEGASAS_RESET_WAIT_TIME;
7673 int error;
7674 u8 dcmd_ret = DCMD_SUCCESS;
7675
7676 if (!instance) {
7677 printk(KERN_ERR "invalid instance!\n");
7678 kfree(ev);
7679 return;
7680 }
7681
7682 /* Adjust event workqueue thread wait time for VF mode */
7683 if (instance->requestorId)
7684 wait_time = MEGASAS_ROUTINE_WAIT_TIME_VF;
7685
7686 /* Don't run the event workqueue thread if OCR is running */
7687 mutex_lock(&instance->reset_mutex);
7688
7689 instance->ev = NULL;
7690 host = instance->host;
7691 if (instance->evt_detail) {
7692 megasas_decode_evt(instance);
7693
7694 switch (le32_to_cpu(instance->evt_detail->code)) {
7695
7696 case MR_EVT_PD_INSERTED:
7697 case MR_EVT_PD_REMOVED:
7698 dcmd_ret = megasas_get_pd_list(instance);
7699 if (dcmd_ret == DCMD_SUCCESS)
7700 doscan = SCAN_PD_CHANNEL;
7701 break;
7702
7703 case MR_EVT_LD_OFFLINE:
7704 case MR_EVT_CFG_CLEARED:
7705 case MR_EVT_LD_DELETED:
7706 case MR_EVT_LD_CREATED:
7707 if (!instance->requestorId ||
7708 (instance->requestorId && megasas_get_ld_vf_affiliation(instance, 0)))
7709 dcmd_ret = megasas_ld_list_query(instance, MR_LD_QUERY_TYPE_EXPOSED_TO_HOST);
7710
7711 if (dcmd_ret == DCMD_SUCCESS)
7712 doscan = SCAN_VD_CHANNEL;
7713
7714 break;
7715
7716 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED:
7717 case MR_EVT_FOREIGN_CFG_IMPORTED:
7718 case MR_EVT_LD_STATE_CHANGE:
7719 dcmd_ret = megasas_get_pd_list(instance);
7720
7721 if (dcmd_ret != DCMD_SUCCESS)
7722 break;
7723
7724 if (!instance->requestorId ||
7725 (instance->requestorId && megasas_get_ld_vf_affiliation(instance, 0)))
7726 dcmd_ret = megasas_ld_list_query(instance, MR_LD_QUERY_TYPE_EXPOSED_TO_HOST);
7727
7728 if (dcmd_ret != DCMD_SUCCESS)
7729 break;
7730
7731 doscan = SCAN_VD_CHANNEL | SCAN_PD_CHANNEL;
7732 dev_info(&instance->pdev->dev, "scanning for scsi%d...\n",
7733 instance->host->host_no);
7734 break;
7735
7736 case MR_EVT_CTRL_PROP_CHANGED:
7737 dcmd_ret = megasas_get_ctrl_info(instance);
7738 break;
7739 default:
7740 doscan = 0;
7741 break;
7742 }
7743 } else {
7744 dev_err(&instance->pdev->dev, "invalid evt_detail!\n");
7745 mutex_unlock(&instance->reset_mutex);
7746 kfree(ev);
7747 return;
7748 }
7749
7750 mutex_unlock(&instance->reset_mutex);
7751
7752 if (doscan & SCAN_PD_CHANNEL) {
7753 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
7754 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
7755 pd_index = i*MEGASAS_MAX_DEV_PER_CHANNEL + j;
7756 sdev1 = scsi_device_lookup(host, i, j, 0);
7757 if (instance->pd_list[pd_index].driveState ==
7758 MR_PD_STATE_SYSTEM) {
7759 if (!sdev1)
7760 scsi_add_device(host, i, j, 0);
7761 else
7762 scsi_device_put(sdev1);
7763 } else {
7764 if (sdev1)
7765 megasas_remove_scsi_device(sdev1);
7766 }
7767 }
7768 }
7769 }
7770
7771 if (doscan & SCAN_VD_CHANNEL) {
7772 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
7773 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
7774 ld_index = (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
7775 sdev1 = scsi_device_lookup(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
7776 if (instance->ld_ids[ld_index] != 0xff) {
7777 if (!sdev1)
7778 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
7779 else
7780 scsi_device_put(sdev1);
7781 } else {
7782 if (sdev1)
7783 megasas_remove_scsi_device(sdev1);
7784 }
7785 }
7786 }
7787 }
7788
7789 if (dcmd_ret == DCMD_SUCCESS)
7790 seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1;
7791 else
7792 seq_num = instance->last_seq_num;
7793
7794 /* Register AEN with FW for latest sequence number plus 1 */
7795 class_locale.members.reserved = 0;
7796 class_locale.members.locale = MR_EVT_LOCALE_ALL;
7797 class_locale.members.class = MR_EVT_CLASS_DEBUG;
7798
7799 if (instance->aen_cmd != NULL) {
7800 kfree(ev);
7801 return;
7802 }
7803
7804 mutex_lock(&instance->reset_mutex);
7805 error = megasas_register_aen(instance, seq_num,
7806 class_locale.word);
7807 if (error)
7808 dev_err(&instance->pdev->dev,
7809 "register aen failed error %x\n", error);
7810
7811 mutex_unlock(&instance->reset_mutex);
7812 kfree(ev);
7813 }
7814
7815 /**
7816 * megasas_init - Driver load entry point
7817 */
megasas_init(void)7818 static int __init megasas_init(void)
7819 {
7820 int rval;
7821
7822 /*
7823 * Booted in kdump kernel, minimize memory footprints by
7824 * disabling few features
7825 */
7826 if (reset_devices) {
7827 msix_vectors = 1;
7828 rdpq_enable = 0;
7829 dual_qdepth_disable = 1;
7830 }
7831
7832 /*
7833 * Announce driver version and other information
7834 */
7835 pr_info("megasas: %s\n", MEGASAS_VERSION);
7836
7837 spin_lock_init(&poll_aen_lock);
7838
7839 support_poll_for_event = 2;
7840 support_device_change = 1;
7841 support_nvme_encapsulation = true;
7842
7843 memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info));
7844
7845 /*
7846 * Register character device node
7847 */
7848 rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops);
7849
7850 if (rval < 0) {
7851 printk(KERN_DEBUG "megasas: failed to open device node\n");
7852 return rval;
7853 }
7854
7855 megasas_mgmt_majorno = rval;
7856
7857 /*
7858 * Register ourselves as PCI hotplug module
7859 */
7860 rval = pci_register_driver(&megasas_pci_driver);
7861
7862 if (rval) {
7863 printk(KERN_DEBUG "megasas: PCI hotplug registration failed \n");
7864 goto err_pcidrv;
7865 }
7866
7867 rval = driver_create_file(&megasas_pci_driver.driver,
7868 &driver_attr_version);
7869 if (rval)
7870 goto err_dcf_attr_ver;
7871
7872 rval = driver_create_file(&megasas_pci_driver.driver,
7873 &driver_attr_release_date);
7874 if (rval)
7875 goto err_dcf_rel_date;
7876
7877 rval = driver_create_file(&megasas_pci_driver.driver,
7878 &driver_attr_support_poll_for_event);
7879 if (rval)
7880 goto err_dcf_support_poll_for_event;
7881
7882 rval = driver_create_file(&megasas_pci_driver.driver,
7883 &driver_attr_dbg_lvl);
7884 if (rval)
7885 goto err_dcf_dbg_lvl;
7886 rval = driver_create_file(&megasas_pci_driver.driver,
7887 &driver_attr_support_device_change);
7888 if (rval)
7889 goto err_dcf_support_device_change;
7890
7891 rval = driver_create_file(&megasas_pci_driver.driver,
7892 &driver_attr_support_nvme_encapsulation);
7893 if (rval)
7894 goto err_dcf_support_nvme_encapsulation;
7895
7896 return rval;
7897
7898 err_dcf_support_nvme_encapsulation:
7899 driver_remove_file(&megasas_pci_driver.driver,
7900 &driver_attr_support_device_change);
7901
7902 err_dcf_support_device_change:
7903 driver_remove_file(&megasas_pci_driver.driver,
7904 &driver_attr_dbg_lvl);
7905 err_dcf_dbg_lvl:
7906 driver_remove_file(&megasas_pci_driver.driver,
7907 &driver_attr_support_poll_for_event);
7908 err_dcf_support_poll_for_event:
7909 driver_remove_file(&megasas_pci_driver.driver,
7910 &driver_attr_release_date);
7911 err_dcf_rel_date:
7912 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
7913 err_dcf_attr_ver:
7914 pci_unregister_driver(&megasas_pci_driver);
7915 err_pcidrv:
7916 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
7917 return rval;
7918 }
7919
7920 /**
7921 * megasas_exit - Driver unload entry point
7922 */
megasas_exit(void)7923 static void __exit megasas_exit(void)
7924 {
7925 driver_remove_file(&megasas_pci_driver.driver,
7926 &driver_attr_dbg_lvl);
7927 driver_remove_file(&megasas_pci_driver.driver,
7928 &driver_attr_support_poll_for_event);
7929 driver_remove_file(&megasas_pci_driver.driver,
7930 &driver_attr_support_device_change);
7931 driver_remove_file(&megasas_pci_driver.driver,
7932 &driver_attr_release_date);
7933 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
7934 driver_remove_file(&megasas_pci_driver.driver,
7935 &driver_attr_support_nvme_encapsulation);
7936
7937 pci_unregister_driver(&megasas_pci_driver);
7938 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
7939 }
7940
7941 module_init(megasas_init);
7942 module_exit(megasas_exit);
7943
