2 * Copyright (c) 2012-2016 VMware, Inc. All rights reserved.
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of EITHER the GNU General Public License
6 * version 2 as published by the Free Software Foundation or the BSD
7 * 2-Clause License. This program is distributed in the hope that it
8 * will be useful, but WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED
9 * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
10 * See the GNU General Public License version 2 for more details at
11 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html.
13 * You should have received a copy of the GNU General Public License
14 * along with this program available in the file COPYING in the main
15 * directory of this source tree.
17 * The BSD 2-Clause License
19 * Redistribution and use in source and binary forms, with or
20 * without modification, are permitted provided that the following
23 * - Redistributions of source code must retain the above
24 * copyright notice, this list of conditions and the following
27 * - Redistributions in binary form must reproduce the above
28 * copyright notice, this list of conditions and the following
29 * disclaimer in the documentation and/or other materials
30 * provided with the distribution.
32 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
33 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
34 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
35 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
36 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
37 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
38 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
39 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
40 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
41 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
42 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
43 * OF THE POSSIBILITY OF SUCH DAMAGE.
49 #include <linux/compiler.h>
50 #include <linux/interrupt.h>
51 #include <linux/list.h>
52 #include <linux/mutex.h>
53 #include <linux/pci.h>
54 #include <linux/semaphore.h>
55 #include <linux/workqueue.h>
56 #include <rdma/ib_umem.h>
57 #include <rdma/ib_verbs.h>
58 #include <rdma/vmw_pvrdma-abi.h>
60 #include "pvrdma_ring.h"
61 #include "pvrdma_dev_api.h"
62 #include "pvrdma_verbs.h"
64 /* NOT the same as BIT_MASK(). */
65 #define PVRDMA_MASK(n) ((n << 1) - 1)
68 * VMware PVRDMA PCI device id.
70 #define PCI_DEVICE_ID_VMWARE_PVRDMA 0x0820
74 struct pvrdma_page_dir {
86 spinlock_t cq_lock; /* Poll lock. */
87 struct pvrdma_uar_map *uar;
89 struct pvrdma_ring_state *ring_state;
90 struct pvrdma_page_dir pdir;
94 wait_queue_head_t wait;
97 struct pvrdma_id_table {
102 spinlock_t lock; /* Table lock. */
103 unsigned long *table;
106 struct pvrdma_uar_map {
112 struct pvrdma_uar_table {
113 struct pvrdma_id_table tbl;
117 struct pvrdma_ucontext {
118 struct ib_ucontext ibucontext;
119 struct pvrdma_dev *dev;
120 struct pvrdma_uar_map uar;
137 struct pvrdma_user_mr {
139 struct ib_umem *umem;
140 struct pvrdma_mr mmr;
141 struct pvrdma_page_dir pdir;
149 struct pvrdma_ring *ring;
150 spinlock_t lock; /* Work queue lock. */
168 struct ib_umem *rumem;
169 struct ib_umem *sumem;
170 struct pvrdma_page_dir pdir;
178 struct mutex mutex; /* QP state mutex. */
180 wait_queue_head_t wait;
184 /* PCI device-related information. */
185 struct ib_device ib_dev;
186 struct pci_dev *pdev;
188 struct pvrdma_device_shared_region *dsr; /* Shared region pointer */
189 dma_addr_t dsrbase; /* Shared region base address */
193 struct list_head device_link;
195 /* Locking and interrupt information. */
196 spinlock_t cmd_lock; /* Command lock. */
197 struct semaphore cmd_sema;
198 struct completion cmd_done;
199 unsigned int nr_vectors;
201 /* RDMA-related device information. */
202 union ib_gid *sgid_tbl;
203 struct pvrdma_ring_state *async_ring_state;
204 struct pvrdma_page_dir async_pdir;
205 struct pvrdma_ring_state *cq_ring_state;
206 struct pvrdma_page_dir cq_pdir;
207 struct pvrdma_cq **cq_tbl;
208 spinlock_t cq_tbl_lock;
209 struct pvrdma_qp **qp_tbl;
210 spinlock_t qp_tbl_lock;
211 struct pvrdma_uar_table uar_table;
212 struct pvrdma_uar_map driver_uar;
213 __be64 sys_image_guid;
214 spinlock_t desc_lock; /* Device modification lock. */
216 struct mutex port_mutex; /* Port modification mutex. */
223 /* Network device information. */
224 struct net_device *netdev;
225 struct notifier_block nb_netdev;
228 struct pvrdma_netdevice_work {
229 struct work_struct work;
230 struct net_device *event_netdev;
234 static inline struct pvrdma_dev *to_vdev(struct ib_device *ibdev)
236 return container_of(ibdev, struct pvrdma_dev, ib_dev);
240 pvrdma_ucontext *to_vucontext(struct ib_ucontext *ibucontext)
242 return container_of(ibucontext, struct pvrdma_ucontext, ibucontext);
245 static inline struct pvrdma_pd *to_vpd(struct ib_pd *ibpd)
247 return container_of(ibpd, struct pvrdma_pd, ibpd);
250 static inline struct pvrdma_cq *to_vcq(struct ib_cq *ibcq)
252 return container_of(ibcq, struct pvrdma_cq, ibcq);
255 static inline struct pvrdma_user_mr *to_vmr(struct ib_mr *ibmr)
257 return container_of(ibmr, struct pvrdma_user_mr, ibmr);
260 static inline struct pvrdma_qp *to_vqp(struct ib_qp *ibqp)
262 return container_of(ibqp, struct pvrdma_qp, ibqp);
265 static inline struct pvrdma_ah *to_vah(struct ib_ah *ibah)
267 return container_of(ibah, struct pvrdma_ah, ibah);
270 static inline void pvrdma_write_reg(struct pvrdma_dev *dev, u32 reg, u32 val)
272 writel(cpu_to_le32(val), dev->regs + reg);
275 static inline u32 pvrdma_read_reg(struct pvrdma_dev *dev, u32 reg)
277 return le32_to_cpu(readl(dev->regs + reg));
280 static inline void pvrdma_write_uar_cq(struct pvrdma_dev *dev, u32 val)
282 writel(cpu_to_le32(val), dev->driver_uar.map + PVRDMA_UAR_CQ_OFFSET);
285 static inline void pvrdma_write_uar_qp(struct pvrdma_dev *dev, u32 val)
287 writel(cpu_to_le32(val), dev->driver_uar.map + PVRDMA_UAR_QP_OFFSET);
290 static inline void *pvrdma_page_dir_get_ptr(struct pvrdma_page_dir *pdir,
293 return pdir->pages[offset / PAGE_SIZE] + (offset % PAGE_SIZE);
296 static inline enum pvrdma_mtu ib_mtu_to_pvrdma(enum ib_mtu mtu)
298 return (enum pvrdma_mtu)mtu;
301 static inline enum ib_mtu pvrdma_mtu_to_ib(enum pvrdma_mtu mtu)
303 return (enum ib_mtu)mtu;
306 static inline enum pvrdma_port_state ib_port_state_to_pvrdma(
307 enum ib_port_state state)
309 return (enum pvrdma_port_state)state;
312 static inline enum ib_port_state pvrdma_port_state_to_ib(
313 enum pvrdma_port_state state)
315 return (enum ib_port_state)state;
318 static inline int ib_port_cap_flags_to_pvrdma(int flags)
320 return flags & PVRDMA_MASK(PVRDMA_PORT_CAP_FLAGS_MAX);
323 static inline int pvrdma_port_cap_flags_to_ib(int flags)
328 static inline enum pvrdma_port_width ib_port_width_to_pvrdma(
329 enum ib_port_width width)
331 return (enum pvrdma_port_width)width;
334 static inline enum ib_port_width pvrdma_port_width_to_ib(
335 enum pvrdma_port_width width)
337 return (enum ib_port_width)width;
340 static inline enum pvrdma_port_speed ib_port_speed_to_pvrdma(
341 enum ib_port_speed speed)
343 return (enum pvrdma_port_speed)speed;
346 static inline enum ib_port_speed pvrdma_port_speed_to_ib(
347 enum pvrdma_port_speed speed)
349 return (enum ib_port_speed)speed;
352 static inline int pvrdma_qp_attr_mask_to_ib(int attr_mask)
357 static inline int ib_qp_attr_mask_to_pvrdma(int attr_mask)
359 return attr_mask & PVRDMA_MASK(PVRDMA_QP_ATTR_MASK_MAX);
362 static inline enum pvrdma_mig_state ib_mig_state_to_pvrdma(
363 enum ib_mig_state state)
365 return (enum pvrdma_mig_state)state;
368 static inline enum ib_mig_state pvrdma_mig_state_to_ib(
369 enum pvrdma_mig_state state)
371 return (enum ib_mig_state)state;
374 static inline int ib_access_flags_to_pvrdma(int flags)
379 static inline int pvrdma_access_flags_to_ib(int flags)
381 return flags & PVRDMA_MASK(PVRDMA_ACCESS_FLAGS_MAX);
384 static inline enum pvrdma_qp_type ib_qp_type_to_pvrdma(enum ib_qp_type type)
386 return (enum pvrdma_qp_type)type;
389 static inline enum ib_qp_type pvrdma_qp_type_to_ib(enum pvrdma_qp_type type)
391 return (enum ib_qp_type)type;
394 static inline enum pvrdma_qp_state ib_qp_state_to_pvrdma(enum ib_qp_state state)
396 return (enum pvrdma_qp_state)state;
399 static inline enum ib_qp_state pvrdma_qp_state_to_ib(enum pvrdma_qp_state state)
401 return (enum ib_qp_state)state;
404 static inline enum pvrdma_wr_opcode ib_wr_opcode_to_pvrdma(enum ib_wr_opcode op)
406 return (enum pvrdma_wr_opcode)op;
409 static inline enum ib_wc_status pvrdma_wc_status_to_ib(
410 enum pvrdma_wc_status status)
412 return (enum ib_wc_status)status;
415 static inline int pvrdma_wc_opcode_to_ib(int opcode)
420 static inline int pvrdma_wc_flags_to_ib(int flags)
425 static inline int ib_send_flags_to_pvrdma(int flags)
427 return flags & PVRDMA_MASK(PVRDMA_SEND_FLAGS_MAX);
430 void pvrdma_qp_cap_to_ib(struct ib_qp_cap *dst,
431 const struct pvrdma_qp_cap *src);
432 void ib_qp_cap_to_pvrdma(struct pvrdma_qp_cap *dst,
433 const struct ib_qp_cap *src);
434 void pvrdma_gid_to_ib(union ib_gid *dst, const union pvrdma_gid *src);
435 void ib_gid_to_pvrdma(union pvrdma_gid *dst, const union ib_gid *src);
436 void pvrdma_global_route_to_ib(struct ib_global_route *dst,
437 const struct pvrdma_global_route *src);
438 void ib_global_route_to_pvrdma(struct pvrdma_global_route *dst,
439 const struct ib_global_route *src);
440 void pvrdma_ah_attr_to_ib(struct ib_ah_attr *dst,
441 const struct pvrdma_ah_attr *src);
442 void ib_ah_attr_to_pvrdma(struct pvrdma_ah_attr *dst,
443 const struct ib_ah_attr *src);
445 int pvrdma_uar_table_init(struct pvrdma_dev *dev);
446 void pvrdma_uar_table_cleanup(struct pvrdma_dev *dev);
448 int pvrdma_uar_alloc(struct pvrdma_dev *dev, struct pvrdma_uar_map *uar);
449 void pvrdma_uar_free(struct pvrdma_dev *dev, struct pvrdma_uar_map *uar);
451 void _pvrdma_flush_cqe(struct pvrdma_qp *qp, struct pvrdma_cq *cq);
453 int pvrdma_page_dir_init(struct pvrdma_dev *dev, struct pvrdma_page_dir *pdir,
454 u64 npages, bool alloc_pages);
455 void pvrdma_page_dir_cleanup(struct pvrdma_dev *dev,
456 struct pvrdma_page_dir *pdir);
457 int pvrdma_page_dir_insert_dma(struct pvrdma_page_dir *pdir, u64 idx,
459 int pvrdma_page_dir_insert_umem(struct pvrdma_page_dir *pdir,
460 struct ib_umem *umem, u64 offset);
461 dma_addr_t pvrdma_page_dir_get_dma(struct pvrdma_page_dir *pdir, u64 idx);
462 int pvrdma_page_dir_insert_page_list(struct pvrdma_page_dir *pdir,
463 u64 *page_list, int num_pages);
465 int pvrdma_cmd_post(struct pvrdma_dev *dev, union pvrdma_cmd_req *req,
466 union pvrdma_cmd_resp *rsp, unsigned resp_code);
468 #endif /* __PVRDMA_H__ */