1 /*******************************************************************************
2 *
3 * Copyright (c) 2015-2016 Intel Corporation. All rights reserved.
4 *
5 * This software is available to you under a choice of one of two
6 * licenses. You may choose to be licensed under the terms of the GNU
7 * General Public License (GPL) Version 2, available from the file
8 * COPYING in the main directory of this source tree, or the
9 * OpenFabrics.org BSD license below:
10 *
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
13 * conditions are met:
14 *
15 * - Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
17 * disclaimer.
18 *
19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials
22 * provided with the distribution.
23 *
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
31 * SOFTWARE.
32 *
33 *******************************************************************************/
34
35 #ifndef I40IW_IW_H
36 #define I40IW_IW_H
37 #include <linux/netdevice.h>
38 #include <linux/inetdevice.h>
39 #include <linux/spinlock.h>
40 #include <linux/kernel.h>
41 #include <linux/delay.h>
42 #include <linux/pci.h>
43 #include <linux/dma-mapping.h>
44 #include <linux/workqueue.h>
45 #include <linux/slab.h>
46 #include <linux/io.h>
47 #include <linux/crc32c.h>
48 #include <rdma/ib_smi.h>
49 #include <rdma/ib_verbs.h>
50 #include <rdma/ib_pack.h>
51 #include <rdma/rdma_cm.h>
52 #include <rdma/iw_cm.h>
53 #include <crypto/hash.h>
54
55 #include "i40iw_status.h"
56 #include "i40iw_osdep.h"
57 #include "i40iw_d.h"
58 #include "i40iw_hmc.h"
59
60 #include <i40e_client.h>
61 #include "i40iw_type.h"
62 #include "i40iw_p.h"
63 #include <rdma/i40iw-abi.h>
64 #include "i40iw_pble.h"
65 #include "i40iw_verbs.h"
66 #include "i40iw_cm.h"
67 #include "i40iw_user.h"
68 #include "i40iw_puda.h"
69
70 #define I40IW_FW_VERSION 2
71 #define I40IW_HW_VERSION 2
72
73 #define I40IW_ARP_ADD 1
74 #define I40IW_ARP_DELETE 2
75 #define I40IW_ARP_RESOLVE 3
76
77 #define I40IW_MACIP_ADD 1
78 #define I40IW_MACIP_DELETE 2
79
80 #define IW_CCQ_SIZE (I40IW_CQP_SW_SQSIZE_2048 + 1)
81 #define IW_CEQ_SIZE 2048
82 #define IW_AEQ_SIZE 2048
83
84 #define RX_BUF_SIZE (1536 + 8)
85 #define IW_REG0_SIZE (4 * 1024)
86 #define IW_TX_TIMEOUT (6 * HZ)
87 #define IW_FIRST_QPN 1
88 #define IW_SW_CONTEXT_ALIGN 1024
89
90 #define MAX_DPC_ITERATIONS 128
91
92 #define I40IW_EVENT_TIMEOUT 100000
93 #define I40IW_VCHNL_EVENT_TIMEOUT 100000
94
95 #define I40IW_NO_VLAN 0xffff
96 #define I40IW_NO_QSET 0xffff
97
98 /* access to mcast filter list */
99 #define IW_ADD_MCAST false
100 #define IW_DEL_MCAST true
101
102 #define I40IW_DRV_OPT_ENABLE_MPA_VER_0 0x00000001
103 #define I40IW_DRV_OPT_DISABLE_MPA_CRC 0x00000002
104 #define I40IW_DRV_OPT_DISABLE_FIRST_WRITE 0x00000004
105 #define I40IW_DRV_OPT_DISABLE_INTF 0x00000008
106 #define I40IW_DRV_OPT_ENABLE_MSI 0x00000010
107 #define I40IW_DRV_OPT_DUAL_LOGICAL_PORT 0x00000020
108 #define I40IW_DRV_OPT_NO_INLINE_DATA 0x00000080
109 #define I40IW_DRV_OPT_DISABLE_INT_MOD 0x00000100
110 #define I40IW_DRV_OPT_DISABLE_VIRT_WQ 0x00000200
111 #define I40IW_DRV_OPT_ENABLE_PAU 0x00000400
112 #define I40IW_DRV_OPT_MCAST_LOGPORT_MAP 0x00000800
113
114 #define IW_HMC_OBJ_TYPE_NUM ARRAY_SIZE(iw_hmc_obj_types)
115 #define IW_CFG_FPM_QP_COUNT 32768
116 #define I40IW_MAX_PAGES_PER_FMR 512
117 #define I40IW_MIN_PAGES_PER_FMR 1
118 #define I40IW_CQP_COMPL_RQ_WQE_FLUSHED 2
119 #define I40IW_CQP_COMPL_SQ_WQE_FLUSHED 3
120 #define I40IW_CQP_COMPL_RQ_SQ_WQE_FLUSHED 4
121
122 struct i40iw_cqp_compl_info {
123 u32 op_ret_val;
124 u16 maj_err_code;
125 u16 min_err_code;
126 bool error;
127 u8 op_code;
128 };
129
130 #define i40iw_pr_err(fmt, args ...) pr_err("%s: "fmt, __func__, ## args)
131
132 #define i40iw_pr_info(fmt, args ...) pr_info("%s: " fmt, __func__, ## args)
133
134 #define i40iw_pr_warn(fmt, args ...) pr_warn("%s: " fmt, __func__, ## args)
135
136 struct i40iw_cqp_request {
137 struct cqp_commands_info info;
138 wait_queue_head_t waitq;
139 struct list_head list;
140 atomic_t refcount;
141 void (*callback_fcn)(struct i40iw_cqp_request*, u32);
142 void *param;
143 struct i40iw_cqp_compl_info compl_info;
144 bool waiting;
145 bool request_done;
146 bool dynamic;
147 };
148
149 struct i40iw_cqp {
150 struct i40iw_sc_cqp sc_cqp;
151 spinlock_t req_lock; /*cqp request list */
152 wait_queue_head_t waitq;
153 struct i40iw_dma_mem sq;
154 struct i40iw_dma_mem host_ctx;
155 u64 *scratch_array;
156 struct i40iw_cqp_request *cqp_requests;
157 struct list_head cqp_avail_reqs;
158 struct list_head cqp_pending_reqs;
159 };
160
161 struct i40iw_device;
162
163 struct i40iw_ccq {
164 struct i40iw_sc_cq sc_cq;
165 spinlock_t lock; /* ccq control */
166 wait_queue_head_t waitq;
167 struct i40iw_dma_mem mem_cq;
168 struct i40iw_dma_mem shadow_area;
169 };
170
171 struct i40iw_ceq {
172 struct i40iw_sc_ceq sc_ceq;
173 struct i40iw_dma_mem mem;
174 u32 irq;
175 u32 msix_idx;
176 struct i40iw_device *iwdev;
177 struct tasklet_struct dpc_tasklet;
178 };
179
180 struct i40iw_aeq {
181 struct i40iw_sc_aeq sc_aeq;
182 struct i40iw_dma_mem mem;
183 };
184
185 struct i40iw_arp_entry {
186 u32 ip_addr[4];
187 u8 mac_addr[ETH_ALEN];
188 };
189
190 enum init_completion_state {
191 INVALID_STATE = 0,
192 INITIAL_STATE,
193 CQP_CREATED,
194 HMC_OBJS_CREATED,
195 PBLE_CHUNK_MEM,
196 CCQ_CREATED,
197 AEQ_CREATED,
198 CEQ_CREATED,
199 ILQ_CREATED,
200 IEQ_CREATED,
201 IP_ADDR_REGISTERED,
202 RDMA_DEV_REGISTERED
203 };
204
205 struct i40iw_msix_vector {
206 u32 idx;
207 u32 irq;
208 u32 cpu_affinity;
209 u32 ceq_id;
210 cpumask_t mask;
211 };
212
213 struct l2params_work {
214 struct work_struct work;
215 struct i40iw_device *iwdev;
216 struct i40iw_l2params l2params;
217 };
218
219 #define I40IW_MSIX_TABLE_SIZE 65
220
221 struct virtchnl_work {
222 struct work_struct work;
223 union {
224 struct i40iw_cqp_request *cqp_request;
225 struct i40iw_virtchnl_work_info work_info;
226 };
227 };
228
229 struct i40e_qvlist_info;
230
231 struct i40iw_device {
232 struct i40iw_ib_device *iwibdev;
233 struct net_device *netdev;
234 wait_queue_head_t vchnl_waitq;
235 struct i40iw_sc_dev sc_dev;
236 struct i40iw_sc_vsi vsi;
237 struct i40iw_handler *hdl;
238 struct i40e_info *ldev;
239 struct i40e_client *client;
240 struct i40iw_hw hw;
241 struct i40iw_cm_core cm_core;
242 u8 *mem_resources;
243 unsigned long *allocated_qps;
244 unsigned long *allocated_cqs;
245 unsigned long *allocated_mrs;
246 unsigned long *allocated_pds;
247 unsigned long *allocated_arps;
248 struct i40iw_qp **qp_table;
249 bool msix_shared;
250 u32 msix_count;
251 struct i40iw_msix_vector *iw_msixtbl;
252 struct i40e_qvlist_info *iw_qvlist;
253
254 struct i40iw_hmc_pble_rsrc *pble_rsrc;
255 struct i40iw_arp_entry *arp_table;
256 struct i40iw_cqp cqp;
257 struct i40iw_ccq ccq;
258 u32 ceqs_count;
259 struct i40iw_ceq *ceqlist;
260 struct i40iw_aeq aeq;
261 u32 arp_table_size;
262 u32 next_arp_index;
263 spinlock_t resource_lock; /* hw resource access */
264 spinlock_t qptable_lock;
265 u32 vendor_id;
266 u32 vendor_part_id;
267 u32 of_device_registered;
268
269 u32 device_cap_flags;
270 unsigned long db_start;
271 u8 resource_profile;
272 u8 max_rdma_vfs;
273 u8 max_enabled_vfs;
274 u8 max_sge;
275 u8 iw_status;
276 u8 send_term_ok;
277 bool push_mode; /* Initialized from parameter passed to driver */
278
279 /* x710 specific */
280 struct mutex pbl_mutex;
281 struct tasklet_struct dpc_tasklet;
282 struct workqueue_struct *virtchnl_wq;
283 struct virtchnl_work virtchnl_w[I40IW_MAX_PE_ENABLED_VF_COUNT];
284 struct i40iw_dma_mem obj_mem;
285 struct i40iw_dma_mem obj_next;
286 u8 *hmc_info_mem;
287 u32 sd_type;
288 struct workqueue_struct *param_wq;
289 atomic_t params_busy;
290 enum init_completion_state init_state;
291 u16 mac_ip_table_idx;
292 atomic_t vchnl_msgs;
293 u32 max_mr;
294 u32 max_qp;
295 u32 max_cq;
296 u32 max_pd;
297 u32 next_qp;
298 u32 next_cq;
299 u32 next_pd;
300 u32 max_mr_size;
301 u32 max_qp_wr;
302 u32 max_cqe;
303 u32 mr_stagmask;
304 u32 mpa_version;
305 bool dcb;
306 bool closing;
307 bool reset;
308 u32 used_pds;
309 u32 used_cqs;
310 u32 used_mrs;
311 u32 used_qps;
312 wait_queue_head_t close_wq;
313 atomic64_t use_count;
314 };
315
316 struct i40iw_ib_device {
317 struct ib_device ibdev;
318 struct i40iw_device *iwdev;
319 };
320
321 struct i40iw_handler {
322 struct list_head list;
323 struct i40e_client *client;
324 struct i40iw_device device;
325 struct i40e_info ldev;
326 };
327
328 /**
329 * to_iwdev - get device
330 * @ibdev: ib device
331 **/
to_iwdev(struct ib_device * ibdev)332 static inline struct i40iw_device *to_iwdev(struct ib_device *ibdev)
333 {
334 return container_of(ibdev, struct i40iw_ib_device, ibdev)->iwdev;
335 }
336
337 /**
338 * to_ucontext - get user context
339 * @ibucontext: ib user context
340 **/
to_ucontext(struct ib_ucontext * ibucontext)341 static inline struct i40iw_ucontext *to_ucontext(struct ib_ucontext *ibucontext)
342 {
343 return container_of(ibucontext, struct i40iw_ucontext, ibucontext);
344 }
345
346 /**
347 * to_iwpd - get protection domain
348 * @ibpd: ib pd
349 **/
to_iwpd(struct ib_pd * ibpd)350 static inline struct i40iw_pd *to_iwpd(struct ib_pd *ibpd)
351 {
352 return container_of(ibpd, struct i40iw_pd, ibpd);
353 }
354
355 /**
356 * to_iwmr - get device memory region
357 * @ibdev: ib memory region
358 **/
to_iwmr(struct ib_mr * ibmr)359 static inline struct i40iw_mr *to_iwmr(struct ib_mr *ibmr)
360 {
361 return container_of(ibmr, struct i40iw_mr, ibmr);
362 }
363
364 /**
365 * to_iwmr_from_ibfmr - get device memory region
366 * @ibfmr: ib fmr
367 **/
to_iwmr_from_ibfmr(struct ib_fmr * ibfmr)368 static inline struct i40iw_mr *to_iwmr_from_ibfmr(struct ib_fmr *ibfmr)
369 {
370 return container_of(ibfmr, struct i40iw_mr, ibfmr);
371 }
372
373 /**
374 * to_iwmw - get device memory window
375 * @ibmw: ib memory window
376 **/
to_iwmw(struct ib_mw * ibmw)377 static inline struct i40iw_mr *to_iwmw(struct ib_mw *ibmw)
378 {
379 return container_of(ibmw, struct i40iw_mr, ibmw);
380 }
381
382 /**
383 * to_iwcq - get completion queue
384 * @ibcq: ib cqdevice
385 **/
to_iwcq(struct ib_cq * ibcq)386 static inline struct i40iw_cq *to_iwcq(struct ib_cq *ibcq)
387 {
388 return container_of(ibcq, struct i40iw_cq, ibcq);
389 }
390
391 /**
392 * to_iwqp - get device qp
393 * @ibqp: ib qp
394 **/
to_iwqp(struct ib_qp * ibqp)395 static inline struct i40iw_qp *to_iwqp(struct ib_qp *ibqp)
396 {
397 return container_of(ibqp, struct i40iw_qp, ibqp);
398 }
399
400 /* i40iw.c */
401 void i40iw_add_ref(struct ib_qp *);
402 void i40iw_rem_ref(struct ib_qp *);
403 struct ib_qp *i40iw_get_qp(struct ib_device *, int);
404
405 void i40iw_flush_wqes(struct i40iw_device *iwdev,
406 struct i40iw_qp *qp);
407
408 void i40iw_manage_arp_cache(struct i40iw_device *iwdev,
409 unsigned char *mac_addr,
410 u32 *ip_addr,
411 bool ipv4,
412 u32 action);
413
414 int i40iw_manage_apbvt(struct i40iw_device *iwdev,
415 u16 accel_local_port,
416 bool add_port);
417
418 struct i40iw_cqp_request *i40iw_get_cqp_request(struct i40iw_cqp *cqp, bool wait);
419 void i40iw_free_cqp_request(struct i40iw_cqp *cqp, struct i40iw_cqp_request *cqp_request);
420 void i40iw_put_cqp_request(struct i40iw_cqp *cqp, struct i40iw_cqp_request *cqp_request);
421
422 /**
423 * i40iw_alloc_resource - allocate a resource
424 * @iwdev: device pointer
425 * @resource_array: resource bit array:
426 * @max_resources: maximum resource number
427 * @req_resources_num: Allocated resource number
428 * @next: next free id
429 **/
i40iw_alloc_resource(struct i40iw_device * iwdev,unsigned long * resource_array,u32 max_resources,u32 * req_resource_num,u32 * next)430 static inline int i40iw_alloc_resource(struct i40iw_device *iwdev,
431 unsigned long *resource_array,
432 u32 max_resources,
433 u32 *req_resource_num,
434 u32 *next)
435 {
436 u32 resource_num;
437 unsigned long flags;
438
439 spin_lock_irqsave(&iwdev->resource_lock, flags);
440 resource_num = find_next_zero_bit(resource_array, max_resources, *next);
441 if (resource_num >= max_resources) {
442 resource_num = find_first_zero_bit(resource_array, max_resources);
443 if (resource_num >= max_resources) {
444 spin_unlock_irqrestore(&iwdev->resource_lock, flags);
445 return -EOVERFLOW;
446 }
447 }
448 set_bit(resource_num, resource_array);
449 *next = resource_num + 1;
450 if (*next == max_resources)
451 *next = 0;
452 *req_resource_num = resource_num;
453 spin_unlock_irqrestore(&iwdev->resource_lock, flags);
454
455 return 0;
456 }
457
458 /**
459 * i40iw_is_resource_allocated - detrmine if resource is
460 * allocated
461 * @iwdev: device pointer
462 * @resource_array: resource array for the resource_num
463 * @resource_num: resource number to check
464 **/
i40iw_is_resource_allocated(struct i40iw_device * iwdev,unsigned long * resource_array,u32 resource_num)465 static inline bool i40iw_is_resource_allocated(struct i40iw_device *iwdev,
466 unsigned long *resource_array,
467 u32 resource_num)
468 {
469 bool bit_is_set;
470 unsigned long flags;
471
472 spin_lock_irqsave(&iwdev->resource_lock, flags);
473
474 bit_is_set = test_bit(resource_num, resource_array);
475 spin_unlock_irqrestore(&iwdev->resource_lock, flags);
476
477 return bit_is_set;
478 }
479
480 /**
481 * i40iw_free_resource - free a resource
482 * @iwdev: device pointer
483 * @resource_array: resource array for the resource_num
484 * @resource_num: resource number to free
485 **/
i40iw_free_resource(struct i40iw_device * iwdev,unsigned long * resource_array,u32 resource_num)486 static inline void i40iw_free_resource(struct i40iw_device *iwdev,
487 unsigned long *resource_array,
488 u32 resource_num)
489 {
490 unsigned long flags;
491
492 spin_lock_irqsave(&iwdev->resource_lock, flags);
493 clear_bit(resource_num, resource_array);
494 spin_unlock_irqrestore(&iwdev->resource_lock, flags);
495 }
496
497 /**
498 * to_iwhdl - Get the handler from the device pointer
499 * @iwdev: device pointer
500 **/
to_iwhdl(struct i40iw_device * iw_dev)501 static inline struct i40iw_handler *to_iwhdl(struct i40iw_device *iw_dev)
502 {
503 return container_of(iw_dev, struct i40iw_handler, device);
504 }
505
506 struct i40iw_handler *i40iw_find_netdev(struct net_device *netdev);
507
508 /**
509 * iw_init_resources -
510 */
511 u32 i40iw_initialize_hw_resources(struct i40iw_device *iwdev);
512
513 int i40iw_register_rdma_device(struct i40iw_device *iwdev);
514 void i40iw_port_ibevent(struct i40iw_device *iwdev);
515 void i40iw_cm_disconn(struct i40iw_qp *iwqp);
516 void i40iw_cm_disconn_worker(void *);
517 int mini_cm_recv_pkt(struct i40iw_cm_core *, struct i40iw_device *,
518 struct sk_buff *);
519
520 enum i40iw_status_code i40iw_handle_cqp_op(struct i40iw_device *iwdev,
521 struct i40iw_cqp_request *cqp_request);
522 enum i40iw_status_code i40iw_add_mac_addr(struct i40iw_device *iwdev,
523 u8 *mac_addr, u8 *mac_index);
524 int i40iw_modify_qp(struct ib_qp *, struct ib_qp_attr *, int, struct ib_udata *);
525 void i40iw_cq_wq_destroy(struct i40iw_device *iwdev, struct i40iw_sc_cq *cq);
526
527 void i40iw_cleanup_pending_cqp_op(struct i40iw_device *iwdev);
528 void i40iw_rem_pdusecount(struct i40iw_pd *iwpd, struct i40iw_device *iwdev);
529 void i40iw_add_pdusecount(struct i40iw_pd *iwpd);
530 void i40iw_rem_devusecount(struct i40iw_device *iwdev);
531 void i40iw_add_devusecount(struct i40iw_device *iwdev);
532 void i40iw_hw_modify_qp(struct i40iw_device *iwdev, struct i40iw_qp *iwqp,
533 struct i40iw_modify_qp_info *info, bool wait);
534
535 void i40iw_qp_suspend_resume(struct i40iw_sc_dev *dev,
536 struct i40iw_sc_qp *qp,
537 bool suspend);
538 enum i40iw_status_code i40iw_manage_qhash(struct i40iw_device *iwdev,
539 struct i40iw_cm_info *cminfo,
540 enum i40iw_quad_entry_type etype,
541 enum i40iw_quad_hash_manage_type mtype,
542 void *cmnode,
543 bool wait);
544 void i40iw_receive_ilq(struct i40iw_sc_vsi *vsi, struct i40iw_puda_buf *rbuf);
545 void i40iw_free_sqbuf(struct i40iw_sc_vsi *vsi, void *bufp);
546 void i40iw_free_qp_resources(struct i40iw_device *iwdev,
547 struct i40iw_qp *iwqp,
548 u32 qp_num);
549 enum i40iw_status_code i40iw_obj_aligned_mem(struct i40iw_device *iwdev,
550 struct i40iw_dma_mem *memptr,
551 u32 size, u32 mask);
552
553 void i40iw_request_reset(struct i40iw_device *iwdev);
554 void i40iw_destroy_rdma_device(struct i40iw_ib_device *iwibdev);
555 void i40iw_setup_cm_core(struct i40iw_device *iwdev);
556 void i40iw_cleanup_cm_core(struct i40iw_cm_core *cm_core);
557 void i40iw_process_ceq(struct i40iw_device *, struct i40iw_ceq *iwceq);
558 void i40iw_process_aeq(struct i40iw_device *);
559 void i40iw_next_iw_state(struct i40iw_qp *iwqp,
560 u8 state, u8 del_hash,
561 u8 term, u8 term_len);
562 int i40iw_send_syn(struct i40iw_cm_node *cm_node, u32 sendack);
563 int i40iw_send_reset(struct i40iw_cm_node *cm_node);
564 struct i40iw_cm_node *i40iw_find_node(struct i40iw_cm_core *cm_core,
565 u16 rem_port,
566 u32 *rem_addr,
567 u16 loc_port,
568 u32 *loc_addr,
569 bool add_refcnt,
570 bool accelerated_list);
571
572 enum i40iw_status_code i40iw_hw_flush_wqes(struct i40iw_device *iwdev,
573 struct i40iw_sc_qp *qp,
574 struct i40iw_qp_flush_info *info,
575 bool wait);
576
577 void i40iw_gen_ae(struct i40iw_device *iwdev,
578 struct i40iw_sc_qp *qp,
579 struct i40iw_gen_ae_info *info,
580 bool wait);
581
582 void i40iw_copy_ip_ntohl(u32 *dst, __be32 *src);
583 struct ib_mr *i40iw_reg_phys_mr(struct ib_pd *ib_pd,
584 u64 addr,
585 u64 size,
586 int acc,
587 u64 *iova_start);
588
589 int i40iw_inetaddr_event(struct notifier_block *notifier,
590 unsigned long event,
591 void *ptr);
592 int i40iw_inet6addr_event(struct notifier_block *notifier,
593 unsigned long event,
594 void *ptr);
595 int i40iw_net_event(struct notifier_block *notifier,
596 unsigned long event,
597 void *ptr);
598 int i40iw_netdevice_event(struct notifier_block *notifier,
599 unsigned long event,
600 void *ptr);
601
602 #endif
603
