Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
[sfrench/cifs-2.6.git] / drivers / infiniband / hw / i40iw / i40iw.h
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 <linux/net/intel/i40e_client.h>
49 #include <rdma/ib_smi.h>
50 #include <rdma/ib_verbs.h>
51 #include <rdma/ib_pack.h>
52 #include <rdma/rdma_cm.h>
53 #include <rdma/iw_cm.h>
54 #include <crypto/hash.h>
55
56 #include "i40iw_status.h"
57 #include "i40iw_osdep.h"
58 #include "i40iw_d.h"
59 #include "i40iw_hmc.h"
60
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_VER_DEFAULT 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
278         /* x710 specific */
279         struct mutex pbl_mutex;
280         struct tasklet_struct dpc_tasklet;
281         struct workqueue_struct *virtchnl_wq;
282         struct virtchnl_work virtchnl_w[I40IW_MAX_PE_ENABLED_VF_COUNT];
283         struct i40iw_dma_mem obj_mem;
284         struct i40iw_dma_mem obj_next;
285         u8 *hmc_info_mem;
286         u32 sd_type;
287         struct workqueue_struct *param_wq;
288         atomic_t params_busy;
289         enum init_completion_state init_state;
290         u16 mac_ip_table_idx;
291         atomic_t vchnl_msgs;
292         u32 max_mr;
293         u32 max_qp;
294         u32 max_cq;
295         u32 max_pd;
296         u32 next_qp;
297         u32 next_cq;
298         u32 next_pd;
299         u32 max_mr_size;
300         u32 max_qp_wr;
301         u32 max_cqe;
302         u32 mr_stagmask;
303         u32 mpa_version;
304         bool dcb;
305         bool closing;
306         bool reset;
307         u32 used_pds;
308         u32 used_cqs;
309         u32 used_mrs;
310         u32 used_qps;
311         wait_queue_head_t close_wq;
312         atomic64_t use_count;
313 };
314
315 struct i40iw_ib_device {
316         struct ib_device ibdev;
317         struct i40iw_device *iwdev;
318 };
319
320 struct i40iw_handler {
321         struct list_head list;
322         struct i40e_client *client;
323         struct i40iw_device device;
324         struct i40e_info ldev;
325 };
326
327 /**
328  * i40iw_fw_major_ver - get firmware major version
329  * @dev: iwarp device
330  **/
331 static inline u64 i40iw_fw_major_ver(struct i40iw_sc_dev *dev)
332 {
333         return RS_64(dev->feature_info[I40IW_FEATURE_FW_INFO],
334                      I40IW_FW_VER_MAJOR);
335 }
336
337 /**
338  * i40iw_fw_minor_ver - get firmware minor version
339  * @dev: iwarp device
340  **/
341 static inline u64 i40iw_fw_minor_ver(struct i40iw_sc_dev *dev)
342 {
343         return RS_64(dev->feature_info[I40IW_FEATURE_FW_INFO],
344                      I40IW_FW_VER_MINOR);
345 }
346
347 /**
348  * to_iwdev - get device
349  * @ibdev: ib device
350  **/
351 static inline struct i40iw_device *to_iwdev(struct ib_device *ibdev)
352 {
353         return container_of(ibdev, struct i40iw_ib_device, ibdev)->iwdev;
354 }
355
356 /**
357  * to_ucontext - get user context
358  * @ibucontext: ib user context
359  **/
360 static inline struct i40iw_ucontext *to_ucontext(struct ib_ucontext *ibucontext)
361 {
362         return container_of(ibucontext, struct i40iw_ucontext, ibucontext);
363 }
364
365 /**
366  * to_iwpd - get protection domain
367  * @ibpd: ib pd
368  **/
369 static inline struct i40iw_pd *to_iwpd(struct ib_pd *ibpd)
370 {
371         return container_of(ibpd, struct i40iw_pd, ibpd);
372 }
373
374 /**
375  * to_iwmr - get device memory region
376  * @ibdev: ib memory region
377  **/
378 static inline struct i40iw_mr *to_iwmr(struct ib_mr *ibmr)
379 {
380         return container_of(ibmr, struct i40iw_mr, ibmr);
381 }
382
383 /**
384  * to_iwmw - get device memory window
385  * @ibmw: ib memory window
386  **/
387 static inline struct i40iw_mr *to_iwmw(struct ib_mw *ibmw)
388 {
389         return container_of(ibmw, struct i40iw_mr, ibmw);
390 }
391
392 /**
393  * to_iwcq - get completion queue
394  * @ibcq: ib cqdevice
395  **/
396 static inline struct i40iw_cq *to_iwcq(struct ib_cq *ibcq)
397 {
398         return container_of(ibcq, struct i40iw_cq, ibcq);
399 }
400
401 /**
402  * to_iwqp - get device qp
403  * @ibqp: ib qp
404  **/
405 static inline struct i40iw_qp *to_iwqp(struct ib_qp *ibqp)
406 {
407         return container_of(ibqp, struct i40iw_qp, ibqp);
408 }
409
410 /* i40iw.c */
411 void i40iw_qp_add_ref(struct ib_qp *ibqp);
412 void i40iw_qp_rem_ref(struct ib_qp *ibqp);
413 struct ib_qp *i40iw_get_qp(struct ib_device *, int);
414
415 void i40iw_flush_wqes(struct i40iw_device *iwdev,
416                       struct i40iw_qp *qp);
417
418 void i40iw_manage_arp_cache(struct i40iw_device *iwdev,
419                             unsigned char *mac_addr,
420                             u32 *ip_addr,
421                             bool ipv4,
422                             u32 action);
423
424 int i40iw_manage_apbvt(struct i40iw_device *iwdev,
425                        u16 accel_local_port,
426                        bool add_port);
427
428 struct i40iw_cqp_request *i40iw_get_cqp_request(struct i40iw_cqp *cqp, bool wait);
429 void i40iw_free_cqp_request(struct i40iw_cqp *cqp, struct i40iw_cqp_request *cqp_request);
430 void i40iw_put_cqp_request(struct i40iw_cqp *cqp, struct i40iw_cqp_request *cqp_request);
431
432 /**
433  * i40iw_alloc_resource - allocate a resource
434  * @iwdev: device pointer
435  * @resource_array: resource bit array:
436  * @max_resources: maximum resource number
437  * @req_resources_num: Allocated resource number
438  * @next: next free id
439  **/
440 static inline int i40iw_alloc_resource(struct i40iw_device *iwdev,
441                                        unsigned long *resource_array,
442                                        u32 max_resources,
443                                        u32 *req_resource_num,
444                                        u32 *next)
445 {
446         u32 resource_num;
447         unsigned long flags;
448
449         spin_lock_irqsave(&iwdev->resource_lock, flags);
450         resource_num = find_next_zero_bit(resource_array, max_resources, *next);
451         if (resource_num >= max_resources) {
452                 resource_num = find_first_zero_bit(resource_array, max_resources);
453                 if (resource_num >= max_resources) {
454                         spin_unlock_irqrestore(&iwdev->resource_lock, flags);
455                         return -EOVERFLOW;
456                 }
457         }
458         set_bit(resource_num, resource_array);
459         *next = resource_num + 1;
460         if (*next == max_resources)
461                 *next = 0;
462         *req_resource_num = resource_num;
463         spin_unlock_irqrestore(&iwdev->resource_lock, flags);
464
465         return 0;
466 }
467
468 /**
469  * i40iw_is_resource_allocated - detrmine if resource is
470  * allocated
471  * @iwdev: device pointer
472  * @resource_array: resource array for the resource_num
473  * @resource_num: resource number to check
474  **/
475 static inline bool i40iw_is_resource_allocated(struct i40iw_device *iwdev,
476                                                unsigned long *resource_array,
477                                                u32 resource_num)
478 {
479         bool bit_is_set;
480         unsigned long flags;
481
482         spin_lock_irqsave(&iwdev->resource_lock, flags);
483
484         bit_is_set = test_bit(resource_num, resource_array);
485         spin_unlock_irqrestore(&iwdev->resource_lock, flags);
486
487         return bit_is_set;
488 }
489
490 /**
491  * i40iw_free_resource - free a resource
492  * @iwdev: device pointer
493  * @resource_array: resource array for the resource_num
494  * @resource_num: resource number to free
495  **/
496 static inline void i40iw_free_resource(struct i40iw_device *iwdev,
497                                        unsigned long *resource_array,
498                                        u32 resource_num)
499 {
500         unsigned long flags;
501
502         spin_lock_irqsave(&iwdev->resource_lock, flags);
503         clear_bit(resource_num, resource_array);
504         spin_unlock_irqrestore(&iwdev->resource_lock, flags);
505 }
506
507 struct i40iw_handler *i40iw_find_netdev(struct net_device *netdev);
508
509 /**
510  * iw_init_resources -
511  */
512 u32 i40iw_initialize_hw_resources(struct i40iw_device *iwdev);
513
514 int i40iw_register_rdma_device(struct i40iw_device *iwdev);
515 void i40iw_port_ibevent(struct i40iw_device *iwdev);
516 void i40iw_cm_disconn(struct i40iw_qp *iwqp);
517 void i40iw_cm_disconn_worker(void *);
518 int mini_cm_recv_pkt(struct i40iw_cm_core *, struct i40iw_device *,
519                      struct sk_buff *);
520
521 enum i40iw_status_code i40iw_handle_cqp_op(struct i40iw_device *iwdev,
522                                            struct i40iw_cqp_request *cqp_request);
523 enum i40iw_status_code i40iw_add_mac_addr(struct i40iw_device *iwdev,
524                                           u8 *mac_addr, u8 *mac_index);
525 int i40iw_modify_qp(struct ib_qp *, struct ib_qp_attr *, int, struct ib_udata *);
526 void i40iw_cq_wq_destroy(struct i40iw_device *iwdev, struct i40iw_sc_cq *cq);
527
528 void i40iw_cleanup_pending_cqp_op(struct i40iw_device *iwdev);
529 void i40iw_rem_pdusecount(struct i40iw_pd *iwpd, struct i40iw_device *iwdev);
530 void i40iw_add_pdusecount(struct i40iw_pd *iwpd);
531 void i40iw_rem_devusecount(struct i40iw_device *iwdev);
532 void i40iw_add_devusecount(struct i40iw_device *iwdev);
533 void i40iw_hw_modify_qp(struct i40iw_device *iwdev, struct i40iw_qp *iwqp,
534                         struct i40iw_modify_qp_info *info, bool wait);
535
536 void i40iw_qp_suspend_resume(struct i40iw_sc_dev *dev,
537                              struct i40iw_sc_qp *qp,
538                              bool suspend);
539 enum i40iw_status_code i40iw_manage_qhash(struct i40iw_device *iwdev,
540                                           struct i40iw_cm_info *cminfo,
541                                           enum i40iw_quad_entry_type etype,
542                                           enum i40iw_quad_hash_manage_type mtype,
543                                           void *cmnode,
544                                           bool wait);
545 void i40iw_receive_ilq(struct i40iw_sc_vsi *vsi, struct i40iw_puda_buf *rbuf);
546 void i40iw_free_sqbuf(struct i40iw_sc_vsi *vsi, void *bufp);
547 void i40iw_free_qp_resources(struct i40iw_qp *iwqp);
548
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 int 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