1 /* This file is part of the Emulex RoCE Device Driver for
2 * RoCE (RDMA over Converged Ethernet) adapters.
3 * Copyright (C) 2012-2015 Emulex. All rights reserved.
4 * EMULEX and SLI are trademarks of Emulex.
7 * This software is available to you under a choice of one of two licenses.
8 * You may choose to be licensed under the terms of the GNU General Public
9 * License (GPL) Version 2, available from the file COPYING in the main
10 * directory of this source tree, or the BSD license below:
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
16 * - Redistributions of source code must retain the above copyright notice,
17 * this list of conditions and the following disclaimer.
19 * - Redistributions in binary form must reproduce the above copyright
20 * notice, this list of conditions and the following disclaimer in
21 * the documentation and/or other materials provided with the distribution.
23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
24 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
27 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
30 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
31 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
32 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
33 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35 * Contact Information:
36 * linux-drivers@emulex.com
40 * Costa Mesa, CA 92626
43 #include <linux/dma-mapping.h>
44 #include <rdma/ib_verbs.h>
45 #include <rdma/ib_user_verbs.h>
46 #include <rdma/iw_cm.h>
47 #include <rdma/ib_umem.h>
48 #include <rdma/ib_addr.h>
49 #include <rdma/ib_cache.h>
50 #include <rdma/uverbs_ioctl.h>
53 #include "ocrdma_hw.h"
54 #include "ocrdma_verbs.h"
55 #include <rdma/ocrdma-abi.h>
57 int ocrdma_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
66 int ocrdma_query_device(struct ib_device *ibdev, struct ib_device_attr *attr,
69 struct ocrdma_dev *dev = get_ocrdma_dev(ibdev);
71 if (uhw->inlen || uhw->outlen)
74 memset(attr, 0, sizeof *attr);
75 memcpy(&attr->fw_ver, &dev->attr.fw_ver[0],
76 min(sizeof(dev->attr.fw_ver), sizeof(attr->fw_ver)));
77 ocrdma_get_guid(dev, (u8 *)&attr->sys_image_guid);
78 attr->max_mr_size = dev->attr.max_mr_size;
79 attr->page_size_cap = 0xffff000;
80 attr->vendor_id = dev->nic_info.pdev->vendor;
81 attr->vendor_part_id = dev->nic_info.pdev->device;
82 attr->hw_ver = dev->asic_id;
83 attr->max_qp = dev->attr.max_qp;
84 attr->max_ah = OCRDMA_MAX_AH;
85 attr->max_qp_wr = dev->attr.max_wqe;
87 attr->device_cap_flags = IB_DEVICE_CURR_QP_STATE_MOD |
88 IB_DEVICE_RC_RNR_NAK_GEN |
89 IB_DEVICE_SHUTDOWN_PORT |
90 IB_DEVICE_SYS_IMAGE_GUID |
91 IB_DEVICE_LOCAL_DMA_LKEY |
92 IB_DEVICE_MEM_MGT_EXTENSIONS;
93 attr->max_send_sge = dev->attr.max_send_sge;
94 attr->max_recv_sge = dev->attr.max_recv_sge;
95 attr->max_sge_rd = dev->attr.max_rdma_sge;
96 attr->max_cq = dev->attr.max_cq;
97 attr->max_cqe = dev->attr.max_cqe;
98 attr->max_mr = dev->attr.max_mr;
99 attr->max_mw = dev->attr.max_mw;
100 attr->max_pd = dev->attr.max_pd;
101 attr->atomic_cap = 0;
102 attr->max_qp_rd_atom =
103 min(dev->attr.max_ord_per_qp, dev->attr.max_ird_per_qp);
104 attr->max_qp_init_rd_atom = dev->attr.max_ord_per_qp;
105 attr->max_srq = dev->attr.max_srq;
106 attr->max_srq_sge = dev->attr.max_srq_sge;
107 attr->max_srq_wr = dev->attr.max_rqe;
108 attr->local_ca_ack_delay = dev->attr.local_ca_ack_delay;
109 attr->max_fast_reg_page_list_len = dev->attr.max_pages_per_frmr;
114 static inline void get_link_speed_and_width(struct ocrdma_dev *dev,
115 u16 *ib_speed, u8 *ib_width)
120 status = ocrdma_mbx_get_link_speed(dev, &speed, NULL);
122 speed = OCRDMA_PHYS_LINK_SPEED_ZERO;
125 case OCRDMA_PHYS_LINK_SPEED_1GBPS:
126 *ib_speed = IB_SPEED_SDR;
127 *ib_width = IB_WIDTH_1X;
130 case OCRDMA_PHYS_LINK_SPEED_10GBPS:
131 *ib_speed = IB_SPEED_QDR;
132 *ib_width = IB_WIDTH_1X;
135 case OCRDMA_PHYS_LINK_SPEED_20GBPS:
136 *ib_speed = IB_SPEED_DDR;
137 *ib_width = IB_WIDTH_4X;
140 case OCRDMA_PHYS_LINK_SPEED_40GBPS:
141 *ib_speed = IB_SPEED_QDR;
142 *ib_width = IB_WIDTH_4X;
147 *ib_speed = IB_SPEED_SDR;
148 *ib_width = IB_WIDTH_1X;
152 int ocrdma_query_port(struct ib_device *ibdev,
153 u8 port, struct ib_port_attr *props)
155 enum ib_port_state port_state;
156 struct ocrdma_dev *dev;
157 struct net_device *netdev;
159 /* props being zeroed by the caller, avoid zeroing it here */
160 dev = get_ocrdma_dev(ibdev);
161 netdev = dev->nic_info.netdev;
162 if (netif_running(netdev) && netif_oper_up(netdev)) {
163 port_state = IB_PORT_ACTIVE;
164 props->phys_state = IB_PORT_PHYS_STATE_LINK_UP;
166 port_state = IB_PORT_DOWN;
167 props->phys_state = IB_PORT_PHYS_STATE_DISABLED;
169 props->max_mtu = IB_MTU_4096;
170 props->active_mtu = iboe_get_mtu(netdev->mtu);
175 props->state = port_state;
176 props->port_cap_flags = IB_PORT_CM_SUP | IB_PORT_REINIT_SUP |
177 IB_PORT_DEVICE_MGMT_SUP |
178 IB_PORT_VENDOR_CLASS_SUP;
179 props->ip_gids = true;
180 props->gid_tbl_len = OCRDMA_MAX_SGID;
181 props->pkey_tbl_len = 1;
182 props->bad_pkey_cntr = 0;
183 props->qkey_viol_cntr = 0;
184 get_link_speed_and_width(dev, &props->active_speed,
185 &props->active_width);
186 props->max_msg_sz = 0x80000000;
187 props->max_vl_num = 4;
191 static int ocrdma_add_mmap(struct ocrdma_ucontext *uctx, u64 phy_addr,
194 struct ocrdma_mm *mm;
196 mm = kzalloc(sizeof(*mm), GFP_KERNEL);
199 mm->key.phy_addr = phy_addr;
201 INIT_LIST_HEAD(&mm->entry);
203 mutex_lock(&uctx->mm_list_lock);
204 list_add_tail(&mm->entry, &uctx->mm_head);
205 mutex_unlock(&uctx->mm_list_lock);
209 static void ocrdma_del_mmap(struct ocrdma_ucontext *uctx, u64 phy_addr,
212 struct ocrdma_mm *mm, *tmp;
214 mutex_lock(&uctx->mm_list_lock);
215 list_for_each_entry_safe(mm, tmp, &uctx->mm_head, entry) {
216 if (len != mm->key.len && phy_addr != mm->key.phy_addr)
219 list_del(&mm->entry);
223 mutex_unlock(&uctx->mm_list_lock);
226 static bool ocrdma_search_mmap(struct ocrdma_ucontext *uctx, u64 phy_addr,
230 struct ocrdma_mm *mm;
232 mutex_lock(&uctx->mm_list_lock);
233 list_for_each_entry(mm, &uctx->mm_head, entry) {
234 if (len != mm->key.len && phy_addr != mm->key.phy_addr)
240 mutex_unlock(&uctx->mm_list_lock);
245 static u16 _ocrdma_pd_mgr_get_bitmap(struct ocrdma_dev *dev, bool dpp_pool)
247 u16 pd_bitmap_idx = 0;
248 const unsigned long *pd_bitmap;
251 pd_bitmap = dev->pd_mgr->pd_dpp_bitmap;
252 pd_bitmap_idx = find_first_zero_bit(pd_bitmap,
253 dev->pd_mgr->max_dpp_pd);
254 __set_bit(pd_bitmap_idx, dev->pd_mgr->pd_dpp_bitmap);
255 dev->pd_mgr->pd_dpp_count++;
256 if (dev->pd_mgr->pd_dpp_count > dev->pd_mgr->pd_dpp_thrsh)
257 dev->pd_mgr->pd_dpp_thrsh = dev->pd_mgr->pd_dpp_count;
259 pd_bitmap = dev->pd_mgr->pd_norm_bitmap;
260 pd_bitmap_idx = find_first_zero_bit(pd_bitmap,
261 dev->pd_mgr->max_normal_pd);
262 __set_bit(pd_bitmap_idx, dev->pd_mgr->pd_norm_bitmap);
263 dev->pd_mgr->pd_norm_count++;
264 if (dev->pd_mgr->pd_norm_count > dev->pd_mgr->pd_norm_thrsh)
265 dev->pd_mgr->pd_norm_thrsh = dev->pd_mgr->pd_norm_count;
267 return pd_bitmap_idx;
270 static int _ocrdma_pd_mgr_put_bitmap(struct ocrdma_dev *dev, u16 pd_id,
276 pd_count = dpp_pool ? dev->pd_mgr->pd_dpp_count :
277 dev->pd_mgr->pd_norm_count;
282 pd_bit_index = pd_id - dev->pd_mgr->pd_dpp_start;
283 if (pd_bit_index >= dev->pd_mgr->max_dpp_pd) {
286 __clear_bit(pd_bit_index, dev->pd_mgr->pd_dpp_bitmap);
287 dev->pd_mgr->pd_dpp_count--;
290 pd_bit_index = pd_id - dev->pd_mgr->pd_norm_start;
291 if (pd_bit_index >= dev->pd_mgr->max_normal_pd) {
294 __clear_bit(pd_bit_index, dev->pd_mgr->pd_norm_bitmap);
295 dev->pd_mgr->pd_norm_count--;
302 static int ocrdma_put_pd_num(struct ocrdma_dev *dev, u16 pd_id,
307 mutex_lock(&dev->dev_lock);
308 status = _ocrdma_pd_mgr_put_bitmap(dev, pd_id, dpp_pool);
309 mutex_unlock(&dev->dev_lock);
313 static int ocrdma_get_pd_num(struct ocrdma_dev *dev, struct ocrdma_pd *pd)
318 mutex_lock(&dev->dev_lock);
319 if (pd->dpp_enabled) {
320 /* try allocating DPP PD, if not available then normal PD */
321 if (dev->pd_mgr->pd_dpp_count < dev->pd_mgr->max_dpp_pd) {
322 pd_idx = _ocrdma_pd_mgr_get_bitmap(dev, true);
323 pd->id = dev->pd_mgr->pd_dpp_start + pd_idx;
324 pd->dpp_page = dev->pd_mgr->dpp_page_index + pd_idx;
325 } else if (dev->pd_mgr->pd_norm_count <
326 dev->pd_mgr->max_normal_pd) {
327 pd_idx = _ocrdma_pd_mgr_get_bitmap(dev, false);
328 pd->id = dev->pd_mgr->pd_norm_start + pd_idx;
329 pd->dpp_enabled = false;
334 if (dev->pd_mgr->pd_norm_count < dev->pd_mgr->max_normal_pd) {
335 pd_idx = _ocrdma_pd_mgr_get_bitmap(dev, false);
336 pd->id = dev->pd_mgr->pd_norm_start + pd_idx;
341 mutex_unlock(&dev->dev_lock);
348 * ocrdma_ucontext must be used here because this function is also
349 * called from ocrdma_alloc_ucontext where ib_udata does not have
350 * valid ib_ucontext pointer. ib_uverbs_get_context does not call
351 * uobj_{alloc|get_xxx} helpers which are used to store the
352 * ib_ucontext in uverbs_attr_bundle wrapping the ib_udata. so
353 * ib_udata does NOT imply valid ib_ucontext here!
355 static int _ocrdma_alloc_pd(struct ocrdma_dev *dev, struct ocrdma_pd *pd,
356 struct ocrdma_ucontext *uctx,
357 struct ib_udata *udata)
361 if (udata && uctx && dev->attr.max_dpp_pds) {
363 ocrdma_get_asic_type(dev) == OCRDMA_ASIC_GEN_SKH_R;
365 pd->dpp_enabled ? (dev->nic_info.db_page_size /
366 dev->attr.wqe_size) : 0;
369 if (dev->pd_mgr->pd_prealloc_valid)
370 return ocrdma_get_pd_num(dev, pd);
373 status = ocrdma_mbx_alloc_pd(dev, pd);
375 if (pd->dpp_enabled) {
376 pd->dpp_enabled = false;
386 static inline int is_ucontext_pd(struct ocrdma_ucontext *uctx,
387 struct ocrdma_pd *pd)
389 return (uctx->cntxt_pd == pd);
392 static void _ocrdma_dealloc_pd(struct ocrdma_dev *dev,
393 struct ocrdma_pd *pd)
395 if (dev->pd_mgr->pd_prealloc_valid)
396 ocrdma_put_pd_num(dev, pd->id, pd->dpp_enabled);
398 ocrdma_mbx_dealloc_pd(dev, pd);
401 static int ocrdma_alloc_ucontext_pd(struct ocrdma_dev *dev,
402 struct ocrdma_ucontext *uctx,
403 struct ib_udata *udata)
405 struct ib_device *ibdev = &dev->ibdev;
409 pd = rdma_zalloc_drv_obj(ibdev, ib_pd);
414 uctx->cntxt_pd = get_ocrdma_pd(pd);
416 status = _ocrdma_alloc_pd(dev, uctx->cntxt_pd, uctx, udata);
418 kfree(uctx->cntxt_pd);
422 uctx->cntxt_pd->uctx = uctx;
423 uctx->cntxt_pd->ibpd.device = &dev->ibdev;
428 static void ocrdma_dealloc_ucontext_pd(struct ocrdma_ucontext *uctx)
430 struct ocrdma_pd *pd = uctx->cntxt_pd;
431 struct ocrdma_dev *dev = get_ocrdma_dev(pd->ibpd.device);
433 if (uctx->pd_in_use) {
434 pr_err("%s(%d) Freeing in use pdid=0x%x.\n",
435 __func__, dev->id, pd->id);
437 uctx->cntxt_pd = NULL;
438 _ocrdma_dealloc_pd(dev, pd);
442 static struct ocrdma_pd *ocrdma_get_ucontext_pd(struct ocrdma_ucontext *uctx)
444 struct ocrdma_pd *pd = NULL;
446 mutex_lock(&uctx->mm_list_lock);
447 if (!uctx->pd_in_use) {
448 uctx->pd_in_use = true;
451 mutex_unlock(&uctx->mm_list_lock);
456 static void ocrdma_release_ucontext_pd(struct ocrdma_ucontext *uctx)
458 mutex_lock(&uctx->mm_list_lock);
459 uctx->pd_in_use = false;
460 mutex_unlock(&uctx->mm_list_lock);
463 int ocrdma_alloc_ucontext(struct ib_ucontext *uctx, struct ib_udata *udata)
465 struct ib_device *ibdev = uctx->device;
467 struct ocrdma_ucontext *ctx = get_ocrdma_ucontext(uctx);
468 struct ocrdma_alloc_ucontext_resp resp = {};
469 struct ocrdma_dev *dev = get_ocrdma_dev(ibdev);
470 struct pci_dev *pdev = dev->nic_info.pdev;
471 u32 map_len = roundup(sizeof(u32) * 2048, PAGE_SIZE);
475 INIT_LIST_HEAD(&ctx->mm_head);
476 mutex_init(&ctx->mm_list_lock);
478 ctx->ah_tbl.va = dma_alloc_coherent(&pdev->dev, map_len,
479 &ctx->ah_tbl.pa, GFP_KERNEL);
483 ctx->ah_tbl.len = map_len;
485 resp.ah_tbl_len = ctx->ah_tbl.len;
486 resp.ah_tbl_page = virt_to_phys(ctx->ah_tbl.va);
488 status = ocrdma_add_mmap(ctx, resp.ah_tbl_page, resp.ah_tbl_len);
492 status = ocrdma_alloc_ucontext_pd(dev, ctx, udata);
496 resp.dev_id = dev->id;
497 resp.max_inline_data = dev->attr.max_inline_data;
498 resp.wqe_size = dev->attr.wqe_size;
499 resp.rqe_size = dev->attr.rqe_size;
500 resp.dpp_wqe_size = dev->attr.wqe_size;
502 memcpy(resp.fw_ver, dev->attr.fw_ver, sizeof(resp.fw_ver));
503 status = ib_copy_to_udata(udata, &resp, sizeof(resp));
509 ocrdma_dealloc_ucontext_pd(ctx);
511 ocrdma_del_mmap(ctx, ctx->ah_tbl.pa, ctx->ah_tbl.len);
513 dma_free_coherent(&pdev->dev, ctx->ah_tbl.len, ctx->ah_tbl.va,
518 void ocrdma_dealloc_ucontext(struct ib_ucontext *ibctx)
520 struct ocrdma_mm *mm, *tmp;
521 struct ocrdma_ucontext *uctx = get_ocrdma_ucontext(ibctx);
522 struct ocrdma_dev *dev = get_ocrdma_dev(ibctx->device);
523 struct pci_dev *pdev = dev->nic_info.pdev;
525 ocrdma_dealloc_ucontext_pd(uctx);
527 ocrdma_del_mmap(uctx, uctx->ah_tbl.pa, uctx->ah_tbl.len);
528 dma_free_coherent(&pdev->dev, uctx->ah_tbl.len, uctx->ah_tbl.va,
531 list_for_each_entry_safe(mm, tmp, &uctx->mm_head, entry) {
532 list_del(&mm->entry);
537 int ocrdma_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
539 struct ocrdma_ucontext *ucontext = get_ocrdma_ucontext(context);
540 struct ocrdma_dev *dev = get_ocrdma_dev(context->device);
541 unsigned long vm_page = vma->vm_pgoff << PAGE_SHIFT;
542 u64 unmapped_db = (u64) dev->nic_info.unmapped_db;
543 unsigned long len = (vma->vm_end - vma->vm_start);
547 if (vma->vm_start & (PAGE_SIZE - 1))
549 found = ocrdma_search_mmap(ucontext, vma->vm_pgoff << PAGE_SHIFT, len);
553 if ((vm_page >= unmapped_db) && (vm_page <= (unmapped_db +
554 dev->nic_info.db_total_size)) &&
555 (len <= dev->nic_info.db_page_size)) {
556 if (vma->vm_flags & VM_READ)
559 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
560 status = io_remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff,
561 len, vma->vm_page_prot);
562 } else if (dev->nic_info.dpp_unmapped_len &&
563 (vm_page >= (u64) dev->nic_info.dpp_unmapped_addr) &&
564 (vm_page <= (u64) (dev->nic_info.dpp_unmapped_addr +
565 dev->nic_info.dpp_unmapped_len)) &&
566 (len <= dev->nic_info.dpp_unmapped_len)) {
567 if (vma->vm_flags & VM_READ)
570 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
571 status = io_remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff,
572 len, vma->vm_page_prot);
574 status = remap_pfn_range(vma, vma->vm_start,
575 vma->vm_pgoff, len, vma->vm_page_prot);
580 static int ocrdma_copy_pd_uresp(struct ocrdma_dev *dev, struct ocrdma_pd *pd,
581 struct ib_udata *udata)
585 u64 dpp_page_addr = 0;
587 struct ocrdma_alloc_pd_uresp rsp;
588 struct ocrdma_ucontext *uctx = rdma_udata_to_drv_context(
589 udata, struct ocrdma_ucontext, ibucontext);
591 memset(&rsp, 0, sizeof(rsp));
593 rsp.dpp_enabled = pd->dpp_enabled;
594 db_page_addr = ocrdma_get_db_addr(dev, pd->id);
595 db_page_size = dev->nic_info.db_page_size;
597 status = ocrdma_add_mmap(uctx, db_page_addr, db_page_size);
601 if (pd->dpp_enabled) {
602 dpp_page_addr = dev->nic_info.dpp_unmapped_addr +
603 (pd->id * PAGE_SIZE);
604 status = ocrdma_add_mmap(uctx, dpp_page_addr,
608 rsp.dpp_page_addr_hi = upper_32_bits(dpp_page_addr);
609 rsp.dpp_page_addr_lo = dpp_page_addr;
612 status = ib_copy_to_udata(udata, &rsp, sizeof(rsp));
621 ocrdma_del_mmap(pd->uctx, dpp_page_addr, PAGE_SIZE);
623 ocrdma_del_mmap(pd->uctx, db_page_addr, db_page_size);
627 int ocrdma_alloc_pd(struct ib_pd *ibpd, struct ib_udata *udata)
629 struct ib_device *ibdev = ibpd->device;
630 struct ocrdma_dev *dev = get_ocrdma_dev(ibdev);
631 struct ocrdma_pd *pd;
633 u8 is_uctx_pd = false;
634 struct ocrdma_ucontext *uctx = rdma_udata_to_drv_context(
635 udata, struct ocrdma_ucontext, ibucontext);
638 pd = ocrdma_get_ucontext_pd(uctx);
645 pd = get_ocrdma_pd(ibpd);
646 status = _ocrdma_alloc_pd(dev, pd, uctx, udata);
652 status = ocrdma_copy_pd_uresp(dev, pd, udata);
660 ocrdma_release_ucontext_pd(uctx);
662 _ocrdma_dealloc_pd(dev, pd);
667 int ocrdma_dealloc_pd(struct ib_pd *ibpd, struct ib_udata *udata)
669 struct ocrdma_pd *pd = get_ocrdma_pd(ibpd);
670 struct ocrdma_dev *dev = get_ocrdma_dev(ibpd->device);
671 struct ocrdma_ucontext *uctx = NULL;
676 u64 dpp_db = dev->nic_info.dpp_unmapped_addr +
677 (pd->id * PAGE_SIZE);
679 ocrdma_del_mmap(pd->uctx, dpp_db, PAGE_SIZE);
680 usr_db = ocrdma_get_db_addr(dev, pd->id);
681 ocrdma_del_mmap(pd->uctx, usr_db, dev->nic_info.db_page_size);
683 if (is_ucontext_pd(uctx, pd)) {
684 ocrdma_release_ucontext_pd(uctx);
688 _ocrdma_dealloc_pd(dev, pd);
692 static int ocrdma_alloc_lkey(struct ocrdma_dev *dev, struct ocrdma_mr *mr,
693 u32 pdid, int acc, u32 num_pbls, u32 addr_check)
698 mr->hwmr.local_rd = 1;
699 mr->hwmr.remote_rd = (acc & IB_ACCESS_REMOTE_READ) ? 1 : 0;
700 mr->hwmr.remote_wr = (acc & IB_ACCESS_REMOTE_WRITE) ? 1 : 0;
701 mr->hwmr.local_wr = (acc & IB_ACCESS_LOCAL_WRITE) ? 1 : 0;
702 mr->hwmr.mw_bind = (acc & IB_ACCESS_MW_BIND) ? 1 : 0;
703 mr->hwmr.remote_atomic = (acc & IB_ACCESS_REMOTE_ATOMIC) ? 1 : 0;
704 mr->hwmr.num_pbls = num_pbls;
706 status = ocrdma_mbx_alloc_lkey(dev, &mr->hwmr, pdid, addr_check);
710 mr->ibmr.lkey = mr->hwmr.lkey;
711 if (mr->hwmr.remote_wr || mr->hwmr.remote_rd)
712 mr->ibmr.rkey = mr->hwmr.lkey;
716 struct ib_mr *ocrdma_get_dma_mr(struct ib_pd *ibpd, int acc)
719 struct ocrdma_mr *mr;
720 struct ocrdma_pd *pd = get_ocrdma_pd(ibpd);
721 struct ocrdma_dev *dev = get_ocrdma_dev(ibpd->device);
723 if (acc & IB_ACCESS_REMOTE_WRITE && !(acc & IB_ACCESS_LOCAL_WRITE)) {
724 pr_err("%s err, invalid access rights\n", __func__);
725 return ERR_PTR(-EINVAL);
728 mr = kzalloc(sizeof(*mr), GFP_KERNEL);
730 return ERR_PTR(-ENOMEM);
732 status = ocrdma_alloc_lkey(dev, mr, pd->id, acc, 0,
733 OCRDMA_ADDR_CHECK_DISABLE);
736 return ERR_PTR(status);
742 static void ocrdma_free_mr_pbl_tbl(struct ocrdma_dev *dev,
743 struct ocrdma_hw_mr *mr)
745 struct pci_dev *pdev = dev->nic_info.pdev;
749 for (i = 0; i < mr->num_pbls; i++) {
750 if (!mr->pbl_table[i].va)
752 dma_free_coherent(&pdev->dev, mr->pbl_size,
754 mr->pbl_table[i].pa);
756 kfree(mr->pbl_table);
757 mr->pbl_table = NULL;
761 static int ocrdma_get_pbl_info(struct ocrdma_dev *dev, struct ocrdma_mr *mr,
770 pbl_size = OCRDMA_MIN_HPAGE_SIZE * (1 << idx);
771 if (pbl_size > MAX_OCRDMA_PBL_SIZE) {
775 num_pbls = roundup(num_pbes, (pbl_size / sizeof(u64)));
776 num_pbls = num_pbls / (pbl_size / sizeof(u64));
778 } while (num_pbls >= dev->attr.max_num_mr_pbl);
780 mr->hwmr.num_pbes = num_pbes;
781 mr->hwmr.num_pbls = num_pbls;
782 mr->hwmr.pbl_size = pbl_size;
786 static int ocrdma_build_pbl_tbl(struct ocrdma_dev *dev, struct ocrdma_hw_mr *mr)
790 u32 dma_len = mr->pbl_size;
791 struct pci_dev *pdev = dev->nic_info.pdev;
795 mr->pbl_table = kcalloc(mr->num_pbls, sizeof(struct ocrdma_pbl),
801 for (i = 0; i < mr->num_pbls; i++) {
802 va = dma_alloc_coherent(&pdev->dev, dma_len, &pa, GFP_KERNEL);
804 ocrdma_free_mr_pbl_tbl(dev, mr);
808 mr->pbl_table[i].va = va;
809 mr->pbl_table[i].pa = pa;
814 static void build_user_pbes(struct ocrdma_dev *dev, struct ocrdma_mr *mr)
816 struct ocrdma_pbe *pbe;
817 struct ib_block_iter biter;
818 struct ocrdma_pbl *pbl_tbl = mr->hwmr.pbl_table;
822 if (!mr->hwmr.num_pbes)
825 pbe = (struct ocrdma_pbe *)pbl_tbl->va;
828 rdma_umem_for_each_dma_block (mr->umem, &biter, PAGE_SIZE) {
829 /* store the page address in pbe */
830 pg_addr = rdma_block_iter_dma_address(&biter);
831 pbe->pa_lo = cpu_to_le32(pg_addr);
832 pbe->pa_hi = cpu_to_le32(upper_32_bits(pg_addr));
836 /* if the given pbl is full storing the pbes,
839 if (pbe_cnt == (mr->hwmr.pbl_size / sizeof(u64))) {
841 pbe = (struct ocrdma_pbe *)pbl_tbl->va;
847 struct ib_mr *ocrdma_reg_user_mr(struct ib_pd *ibpd, u64 start, u64 len,
848 u64 usr_addr, int acc, struct ib_udata *udata)
850 int status = -ENOMEM;
851 struct ocrdma_dev *dev = get_ocrdma_dev(ibpd->device);
852 struct ocrdma_mr *mr;
853 struct ocrdma_pd *pd;
855 pd = get_ocrdma_pd(ibpd);
857 if (acc & IB_ACCESS_REMOTE_WRITE && !(acc & IB_ACCESS_LOCAL_WRITE))
858 return ERR_PTR(-EINVAL);
860 mr = kzalloc(sizeof(*mr), GFP_KERNEL);
862 return ERR_PTR(status);
863 mr->umem = ib_umem_get(ibpd->device, start, len, acc);
864 if (IS_ERR(mr->umem)) {
868 status = ocrdma_get_pbl_info(
869 dev, mr, ib_umem_num_dma_blocks(mr->umem, PAGE_SIZE));
873 mr->hwmr.pbe_size = PAGE_SIZE;
874 mr->hwmr.va = usr_addr;
876 mr->hwmr.remote_wr = (acc & IB_ACCESS_REMOTE_WRITE) ? 1 : 0;
877 mr->hwmr.remote_rd = (acc & IB_ACCESS_REMOTE_READ) ? 1 : 0;
878 mr->hwmr.local_wr = (acc & IB_ACCESS_LOCAL_WRITE) ? 1 : 0;
879 mr->hwmr.local_rd = 1;
880 mr->hwmr.remote_atomic = (acc & IB_ACCESS_REMOTE_ATOMIC) ? 1 : 0;
881 status = ocrdma_build_pbl_tbl(dev, &mr->hwmr);
884 build_user_pbes(dev, mr);
885 status = ocrdma_reg_mr(dev, &mr->hwmr, pd->id, acc);
888 mr->ibmr.lkey = mr->hwmr.lkey;
889 if (mr->hwmr.remote_wr || mr->hwmr.remote_rd)
890 mr->ibmr.rkey = mr->hwmr.lkey;
895 ocrdma_free_mr_pbl_tbl(dev, &mr->hwmr);
898 return ERR_PTR(status);
901 int ocrdma_dereg_mr(struct ib_mr *ib_mr, struct ib_udata *udata)
903 struct ocrdma_mr *mr = get_ocrdma_mr(ib_mr);
904 struct ocrdma_dev *dev = get_ocrdma_dev(ib_mr->device);
906 (void) ocrdma_mbx_dealloc_lkey(dev, mr->hwmr.fr_mr, mr->hwmr.lkey);
909 ocrdma_free_mr_pbl_tbl(dev, &mr->hwmr);
911 /* it could be user registered memory. */
912 ib_umem_release(mr->umem);
915 /* Don't stop cleanup, in case FW is unresponsive */
916 if (dev->mqe_ctx.fw_error_state) {
917 pr_err("%s(%d) fw not responding.\n",
923 static int ocrdma_copy_cq_uresp(struct ocrdma_dev *dev, struct ocrdma_cq *cq,
924 struct ib_udata *udata)
927 struct ocrdma_ucontext *uctx = rdma_udata_to_drv_context(
928 udata, struct ocrdma_ucontext, ibucontext);
929 struct ocrdma_create_cq_uresp uresp;
931 /* this must be user flow! */
935 memset(&uresp, 0, sizeof(uresp));
936 uresp.cq_id = cq->id;
937 uresp.page_size = PAGE_ALIGN(cq->len);
939 uresp.max_hw_cqe = cq->max_hw_cqe;
940 uresp.page_addr[0] = virt_to_phys(cq->va);
941 uresp.db_page_addr = ocrdma_get_db_addr(dev, uctx->cntxt_pd->id);
942 uresp.db_page_size = dev->nic_info.db_page_size;
943 uresp.phase_change = cq->phase_change ? 1 : 0;
944 status = ib_copy_to_udata(udata, &uresp, sizeof(uresp));
946 pr_err("%s(%d) copy error cqid=0x%x.\n",
947 __func__, dev->id, cq->id);
950 status = ocrdma_add_mmap(uctx, uresp.db_page_addr, uresp.db_page_size);
953 status = ocrdma_add_mmap(uctx, uresp.page_addr[0], uresp.page_size);
955 ocrdma_del_mmap(uctx, uresp.db_page_addr, uresp.db_page_size);
963 int ocrdma_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr,
964 struct ib_udata *udata)
966 struct ib_device *ibdev = ibcq->device;
967 int entries = attr->cqe;
968 struct ocrdma_cq *cq = get_ocrdma_cq(ibcq);
969 struct ocrdma_dev *dev = get_ocrdma_dev(ibdev);
970 struct ocrdma_ucontext *uctx = rdma_udata_to_drv_context(
971 udata, struct ocrdma_ucontext, ibucontext);
974 struct ocrdma_create_cq_ureq ureq;
980 if (ib_copy_from_udata(&ureq, udata, sizeof(ureq)))
985 spin_lock_init(&cq->cq_lock);
986 spin_lock_init(&cq->comp_handler_lock);
987 INIT_LIST_HEAD(&cq->sq_head);
988 INIT_LIST_HEAD(&cq->rq_head);
991 pd_id = uctx->cntxt_pd->id;
993 status = ocrdma_mbx_create_cq(dev, cq, entries, ureq.dpp_cq, pd_id);
998 status = ocrdma_copy_cq_uresp(dev, cq, udata);
1002 cq->phase = OCRDMA_CQE_VALID;
1003 dev->cq_tbl[cq->id] = cq;
1007 ocrdma_mbx_destroy_cq(dev, cq);
1011 int ocrdma_resize_cq(struct ib_cq *ibcq, int new_cnt,
1012 struct ib_udata *udata)
1015 struct ocrdma_cq *cq = get_ocrdma_cq(ibcq);
1017 if (new_cnt < 1 || new_cnt > cq->max_hw_cqe) {
1021 ibcq->cqe = new_cnt;
1025 static void ocrdma_flush_cq(struct ocrdma_cq *cq)
1028 int valid_count = 0;
1029 unsigned long flags;
1031 struct ocrdma_dev *dev = get_ocrdma_dev(cq->ibcq.device);
1032 struct ocrdma_cqe *cqe = NULL;
1035 cqe_cnt = cq->cqe_cnt;
1037 /* Last irq might have scheduled a polling thread
1038 * sync-up with it before hard flushing.
1040 spin_lock_irqsave(&cq->cq_lock, flags);
1042 if (is_cqe_valid(cq, cqe))
1047 ocrdma_ring_cq_db(dev, cq->id, false, false, valid_count);
1048 spin_unlock_irqrestore(&cq->cq_lock, flags);
1051 int ocrdma_destroy_cq(struct ib_cq *ibcq, struct ib_udata *udata)
1053 struct ocrdma_cq *cq = get_ocrdma_cq(ibcq);
1054 struct ocrdma_eq *eq = NULL;
1055 struct ocrdma_dev *dev = get_ocrdma_dev(ibcq->device);
1059 dev->cq_tbl[cq->id] = NULL;
1060 indx = ocrdma_get_eq_table_index(dev, cq->eqn);
1062 eq = &dev->eq_tbl[indx];
1063 irq = ocrdma_get_irq(dev, eq);
1064 synchronize_irq(irq);
1065 ocrdma_flush_cq(cq);
1067 ocrdma_mbx_destroy_cq(dev, cq);
1069 pdid = cq->ucontext->cntxt_pd->id;
1070 ocrdma_del_mmap(cq->ucontext, (u64) cq->pa,
1071 PAGE_ALIGN(cq->len));
1072 ocrdma_del_mmap(cq->ucontext,
1073 ocrdma_get_db_addr(dev, pdid),
1074 dev->nic_info.db_page_size);
1079 static int ocrdma_add_qpn_map(struct ocrdma_dev *dev, struct ocrdma_qp *qp)
1081 int status = -EINVAL;
1083 if (qp->id < OCRDMA_MAX_QP && dev->qp_tbl[qp->id] == NULL) {
1084 dev->qp_tbl[qp->id] = qp;
1090 static void ocrdma_del_qpn_map(struct ocrdma_dev *dev, struct ocrdma_qp *qp)
1092 dev->qp_tbl[qp->id] = NULL;
1095 static int ocrdma_check_qp_params(struct ib_pd *ibpd, struct ocrdma_dev *dev,
1096 struct ib_qp_init_attr *attrs,
1097 struct ib_udata *udata)
1099 if ((attrs->qp_type != IB_QPT_GSI) &&
1100 (attrs->qp_type != IB_QPT_RC) &&
1101 (attrs->qp_type != IB_QPT_UC) &&
1102 (attrs->qp_type != IB_QPT_UD)) {
1103 pr_err("%s(%d) unsupported qp type=0x%x requested\n",
1104 __func__, dev->id, attrs->qp_type);
1107 /* Skip the check for QP1 to support CM size of 128 */
1108 if ((attrs->qp_type != IB_QPT_GSI) &&
1109 (attrs->cap.max_send_wr > dev->attr.max_wqe)) {
1110 pr_err("%s(%d) unsupported send_wr=0x%x requested\n",
1111 __func__, dev->id, attrs->cap.max_send_wr);
1112 pr_err("%s(%d) supported send_wr=0x%x\n",
1113 __func__, dev->id, dev->attr.max_wqe);
1116 if (!attrs->srq && (attrs->cap.max_recv_wr > dev->attr.max_rqe)) {
1117 pr_err("%s(%d) unsupported recv_wr=0x%x requested\n",
1118 __func__, dev->id, attrs->cap.max_recv_wr);
1119 pr_err("%s(%d) supported recv_wr=0x%x\n",
1120 __func__, dev->id, dev->attr.max_rqe);
1123 if (attrs->cap.max_inline_data > dev->attr.max_inline_data) {
1124 pr_err("%s(%d) unsupported inline data size=0x%x requested\n",
1125 __func__, dev->id, attrs->cap.max_inline_data);
1126 pr_err("%s(%d) supported inline data size=0x%x\n",
1127 __func__, dev->id, dev->attr.max_inline_data);
1130 if (attrs->cap.max_send_sge > dev->attr.max_send_sge) {
1131 pr_err("%s(%d) unsupported send_sge=0x%x requested\n",
1132 __func__, dev->id, attrs->cap.max_send_sge);
1133 pr_err("%s(%d) supported send_sge=0x%x\n",
1134 __func__, dev->id, dev->attr.max_send_sge);
1137 if (attrs->cap.max_recv_sge > dev->attr.max_recv_sge) {
1138 pr_err("%s(%d) unsupported recv_sge=0x%x requested\n",
1139 __func__, dev->id, attrs->cap.max_recv_sge);
1140 pr_err("%s(%d) supported recv_sge=0x%x\n",
1141 __func__, dev->id, dev->attr.max_recv_sge);
1144 /* unprivileged user space cannot create special QP */
1145 if (udata && attrs->qp_type == IB_QPT_GSI) {
1147 ("%s(%d) Userspace can't create special QPs of type=0x%x\n",
1148 __func__, dev->id, attrs->qp_type);
1151 /* allow creating only one GSI type of QP */
1152 if (attrs->qp_type == IB_QPT_GSI && dev->gsi_qp_created) {
1153 pr_err("%s(%d) GSI special QPs already created.\n",
1157 /* verify consumer QPs are not trying to use GSI QP's CQ */
1158 if ((attrs->qp_type != IB_QPT_GSI) && (dev->gsi_qp_created)) {
1159 if ((dev->gsi_sqcq == get_ocrdma_cq(attrs->send_cq)) ||
1160 (dev->gsi_rqcq == get_ocrdma_cq(attrs->recv_cq))) {
1161 pr_err("%s(%d) Consumer QP cannot use GSI CQs.\n",
1169 static int ocrdma_copy_qp_uresp(struct ocrdma_qp *qp,
1170 struct ib_udata *udata, int dpp_offset,
1171 int dpp_credit_lmt, int srq)
1175 struct ocrdma_create_qp_uresp uresp;
1176 struct ocrdma_pd *pd = qp->pd;
1177 struct ocrdma_dev *dev = get_ocrdma_dev(pd->ibpd.device);
1179 memset(&uresp, 0, sizeof(uresp));
1180 usr_db = dev->nic_info.unmapped_db +
1181 (pd->id * dev->nic_info.db_page_size);
1182 uresp.qp_id = qp->id;
1183 uresp.sq_dbid = qp->sq.dbid;
1184 uresp.num_sq_pages = 1;
1185 uresp.sq_page_size = PAGE_ALIGN(qp->sq.len);
1186 uresp.sq_page_addr[0] = virt_to_phys(qp->sq.va);
1187 uresp.num_wqe_allocated = qp->sq.max_cnt;
1189 uresp.rq_dbid = qp->rq.dbid;
1190 uresp.num_rq_pages = 1;
1191 uresp.rq_page_size = PAGE_ALIGN(qp->rq.len);
1192 uresp.rq_page_addr[0] = virt_to_phys(qp->rq.va);
1193 uresp.num_rqe_allocated = qp->rq.max_cnt;
1195 uresp.db_page_addr = usr_db;
1196 uresp.db_page_size = dev->nic_info.db_page_size;
1197 uresp.db_sq_offset = OCRDMA_DB_GEN2_SQ_OFFSET;
1198 uresp.db_rq_offset = OCRDMA_DB_GEN2_RQ_OFFSET;
1199 uresp.db_shift = OCRDMA_DB_RQ_SHIFT;
1201 if (qp->dpp_enabled) {
1202 uresp.dpp_credit = dpp_credit_lmt;
1203 uresp.dpp_offset = dpp_offset;
1205 status = ib_copy_to_udata(udata, &uresp, sizeof(uresp));
1207 pr_err("%s(%d) user copy error.\n", __func__, dev->id);
1210 status = ocrdma_add_mmap(pd->uctx, uresp.sq_page_addr[0],
1211 uresp.sq_page_size);
1216 status = ocrdma_add_mmap(pd->uctx, uresp.rq_page_addr[0],
1217 uresp.rq_page_size);
1223 ocrdma_del_mmap(pd->uctx, uresp.sq_page_addr[0], uresp.sq_page_size);
1228 static void ocrdma_set_qp_db(struct ocrdma_dev *dev, struct ocrdma_qp *qp,
1229 struct ocrdma_pd *pd)
1231 if (ocrdma_get_asic_type(dev) == OCRDMA_ASIC_GEN_SKH_R) {
1232 qp->sq_db = dev->nic_info.db +
1233 (pd->id * dev->nic_info.db_page_size) +
1234 OCRDMA_DB_GEN2_SQ_OFFSET;
1235 qp->rq_db = dev->nic_info.db +
1236 (pd->id * dev->nic_info.db_page_size) +
1237 OCRDMA_DB_GEN2_RQ_OFFSET;
1239 qp->sq_db = dev->nic_info.db +
1240 (pd->id * dev->nic_info.db_page_size) +
1241 OCRDMA_DB_SQ_OFFSET;
1242 qp->rq_db = dev->nic_info.db +
1243 (pd->id * dev->nic_info.db_page_size) +
1244 OCRDMA_DB_RQ_OFFSET;
1248 static int ocrdma_alloc_wr_id_tbl(struct ocrdma_qp *qp)
1251 kcalloc(qp->sq.max_cnt, sizeof(*(qp->wqe_wr_id_tbl)),
1253 if (qp->wqe_wr_id_tbl == NULL)
1256 kcalloc(qp->rq.max_cnt, sizeof(u64), GFP_KERNEL);
1257 if (qp->rqe_wr_id_tbl == NULL)
1263 static void ocrdma_set_qp_init_params(struct ocrdma_qp *qp,
1264 struct ocrdma_pd *pd,
1265 struct ib_qp_init_attr *attrs)
1268 spin_lock_init(&qp->q_lock);
1269 INIT_LIST_HEAD(&qp->sq_entry);
1270 INIT_LIST_HEAD(&qp->rq_entry);
1272 qp->qp_type = attrs->qp_type;
1273 qp->cap_flags = OCRDMA_QP_INB_RD | OCRDMA_QP_INB_WR;
1274 qp->max_inline_data = attrs->cap.max_inline_data;
1275 qp->sq.max_sges = attrs->cap.max_send_sge;
1276 qp->rq.max_sges = attrs->cap.max_recv_sge;
1277 qp->state = OCRDMA_QPS_RST;
1278 qp->signaled = (attrs->sq_sig_type == IB_SIGNAL_ALL_WR) ? true : false;
1281 static void ocrdma_store_gsi_qp_cq(struct ocrdma_dev *dev,
1282 struct ib_qp_init_attr *attrs)
1284 if (attrs->qp_type == IB_QPT_GSI) {
1285 dev->gsi_qp_created = 1;
1286 dev->gsi_sqcq = get_ocrdma_cq(attrs->send_cq);
1287 dev->gsi_rqcq = get_ocrdma_cq(attrs->recv_cq);
1291 struct ib_qp *ocrdma_create_qp(struct ib_pd *ibpd,
1292 struct ib_qp_init_attr *attrs,
1293 struct ib_udata *udata)
1296 struct ocrdma_pd *pd = get_ocrdma_pd(ibpd);
1297 struct ocrdma_qp *qp;
1298 struct ocrdma_dev *dev = get_ocrdma_dev(ibpd->device);
1299 struct ocrdma_create_qp_ureq ureq;
1300 u16 dpp_credit_lmt, dpp_offset;
1302 status = ocrdma_check_qp_params(ibpd, dev, attrs, udata);
1306 memset(&ureq, 0, sizeof(ureq));
1308 if (ib_copy_from_udata(&ureq, udata, sizeof(ureq)))
1309 return ERR_PTR(-EFAULT);
1311 qp = kzalloc(sizeof(*qp), GFP_KERNEL);
1316 ocrdma_set_qp_init_params(qp, pd, attrs);
1318 qp->cap_flags |= (OCRDMA_QP_MW_BIND | OCRDMA_QP_LKEY0 |
1319 OCRDMA_QP_FAST_REG);
1321 mutex_lock(&dev->dev_lock);
1322 status = ocrdma_mbx_create_qp(qp, attrs, ureq.enable_dpp_cq,
1324 &dpp_offset, &dpp_credit_lmt);
1328 /* user space QP's wr_id table are managed in library */
1329 if (udata == NULL) {
1330 status = ocrdma_alloc_wr_id_tbl(qp);
1335 status = ocrdma_add_qpn_map(dev, qp);
1338 ocrdma_set_qp_db(dev, qp, pd);
1340 status = ocrdma_copy_qp_uresp(qp, udata, dpp_offset,
1342 (attrs->srq != NULL));
1346 ocrdma_store_gsi_qp_cq(dev, attrs);
1347 qp->ibqp.qp_num = qp->id;
1348 mutex_unlock(&dev->dev_lock);
1352 ocrdma_del_qpn_map(dev, qp);
1354 ocrdma_mbx_destroy_qp(dev, qp);
1356 mutex_unlock(&dev->dev_lock);
1357 kfree(qp->wqe_wr_id_tbl);
1358 kfree(qp->rqe_wr_id_tbl);
1360 pr_err("%s(%d) error=%d\n", __func__, dev->id, status);
1362 return ERR_PTR(status);
1365 int _ocrdma_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
1369 struct ocrdma_qp *qp;
1370 struct ocrdma_dev *dev;
1371 enum ib_qp_state old_qps;
1373 qp = get_ocrdma_qp(ibqp);
1374 dev = get_ocrdma_dev(ibqp->device);
1375 if (attr_mask & IB_QP_STATE)
1376 status = ocrdma_qp_state_change(qp, attr->qp_state, &old_qps);
1377 /* if new and previous states are same hw doesn't need to
1382 return ocrdma_mbx_modify_qp(dev, qp, attr, attr_mask);
1385 int ocrdma_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
1386 int attr_mask, struct ib_udata *udata)
1388 unsigned long flags;
1389 int status = -EINVAL;
1390 struct ocrdma_qp *qp;
1391 struct ocrdma_dev *dev;
1392 enum ib_qp_state old_qps, new_qps;
1394 qp = get_ocrdma_qp(ibqp);
1395 dev = get_ocrdma_dev(ibqp->device);
1397 /* syncronize with multiple context trying to change, retrive qps */
1398 mutex_lock(&dev->dev_lock);
1399 /* syncronize with wqe, rqe posting and cqe processing contexts */
1400 spin_lock_irqsave(&qp->q_lock, flags);
1401 old_qps = get_ibqp_state(qp->state);
1402 if (attr_mask & IB_QP_STATE)
1403 new_qps = attr->qp_state;
1406 spin_unlock_irqrestore(&qp->q_lock, flags);
1408 if (!ib_modify_qp_is_ok(old_qps, new_qps, ibqp->qp_type, attr_mask)) {
1409 pr_err("%s(%d) invalid attribute mask=0x%x specified for\n"
1410 "qpn=0x%x of type=0x%x old_qps=0x%x, new_qps=0x%x\n",
1411 __func__, dev->id, attr_mask, qp->id, ibqp->qp_type,
1416 status = _ocrdma_modify_qp(ibqp, attr, attr_mask);
1420 mutex_unlock(&dev->dev_lock);
1424 static enum ib_mtu ocrdma_mtu_int_to_enum(u16 mtu)
1442 static int ocrdma_to_ib_qp_acc_flags(int qp_cap_flags)
1444 int ib_qp_acc_flags = 0;
1446 if (qp_cap_flags & OCRDMA_QP_INB_WR)
1447 ib_qp_acc_flags |= IB_ACCESS_REMOTE_WRITE;
1448 if (qp_cap_flags & OCRDMA_QP_INB_RD)
1449 ib_qp_acc_flags |= IB_ACCESS_LOCAL_WRITE;
1450 return ib_qp_acc_flags;
1453 int ocrdma_query_qp(struct ib_qp *ibqp,
1454 struct ib_qp_attr *qp_attr,
1455 int attr_mask, struct ib_qp_init_attr *qp_init_attr)
1459 struct ocrdma_qp_params params;
1460 struct ocrdma_qp *qp = get_ocrdma_qp(ibqp);
1461 struct ocrdma_dev *dev = get_ocrdma_dev(ibqp->device);
1463 memset(¶ms, 0, sizeof(params));
1464 mutex_lock(&dev->dev_lock);
1465 status = ocrdma_mbx_query_qp(dev, qp, ¶ms);
1466 mutex_unlock(&dev->dev_lock);
1469 if (qp->qp_type == IB_QPT_UD)
1470 qp_attr->qkey = params.qkey;
1472 ocrdma_mtu_int_to_enum(params.path_mtu_pkey_indx &
1473 OCRDMA_QP_PARAMS_PATH_MTU_MASK) >>
1474 OCRDMA_QP_PARAMS_PATH_MTU_SHIFT;
1475 qp_attr->path_mig_state = IB_MIG_MIGRATED;
1476 qp_attr->rq_psn = params.hop_lmt_rq_psn & OCRDMA_QP_PARAMS_RQ_PSN_MASK;
1477 qp_attr->sq_psn = params.tclass_sq_psn & OCRDMA_QP_PARAMS_SQ_PSN_MASK;
1478 qp_attr->dest_qp_num =
1479 params.ack_to_rnr_rtc_dest_qpn & OCRDMA_QP_PARAMS_DEST_QPN_MASK;
1481 qp_attr->qp_access_flags = ocrdma_to_ib_qp_acc_flags(qp->cap_flags);
1482 qp_attr->cap.max_send_wr = qp->sq.max_cnt - 1;
1483 qp_attr->cap.max_recv_wr = qp->rq.max_cnt - 1;
1484 qp_attr->cap.max_send_sge = qp->sq.max_sges;
1485 qp_attr->cap.max_recv_sge = qp->rq.max_sges;
1486 qp_attr->cap.max_inline_data = qp->max_inline_data;
1487 qp_init_attr->cap = qp_attr->cap;
1488 qp_attr->ah_attr.type = RDMA_AH_ATTR_TYPE_ROCE;
1490 rdma_ah_set_grh(&qp_attr->ah_attr, NULL,
1491 params.rnt_rc_sl_fl &
1492 OCRDMA_QP_PARAMS_FLOW_LABEL_MASK,
1494 (params.hop_lmt_rq_psn &
1495 OCRDMA_QP_PARAMS_HOP_LMT_MASK) >>
1496 OCRDMA_QP_PARAMS_HOP_LMT_SHIFT,
1497 (params.tclass_sq_psn &
1498 OCRDMA_QP_PARAMS_TCLASS_MASK) >>
1499 OCRDMA_QP_PARAMS_TCLASS_SHIFT);
1500 rdma_ah_set_dgid_raw(&qp_attr->ah_attr, ¶ms.dgid[0]);
1502 rdma_ah_set_port_num(&qp_attr->ah_attr, 1);
1503 rdma_ah_set_sl(&qp_attr->ah_attr, (params.rnt_rc_sl_fl &
1504 OCRDMA_QP_PARAMS_SL_MASK) >>
1505 OCRDMA_QP_PARAMS_SL_SHIFT);
1506 qp_attr->timeout = (params.ack_to_rnr_rtc_dest_qpn &
1507 OCRDMA_QP_PARAMS_ACK_TIMEOUT_MASK) >>
1508 OCRDMA_QP_PARAMS_ACK_TIMEOUT_SHIFT;
1509 qp_attr->rnr_retry = (params.ack_to_rnr_rtc_dest_qpn &
1510 OCRDMA_QP_PARAMS_RNR_RETRY_CNT_MASK) >>
1511 OCRDMA_QP_PARAMS_RNR_RETRY_CNT_SHIFT;
1512 qp_attr->retry_cnt =
1513 (params.rnt_rc_sl_fl & OCRDMA_QP_PARAMS_RETRY_CNT_MASK) >>
1514 OCRDMA_QP_PARAMS_RETRY_CNT_SHIFT;
1515 qp_attr->min_rnr_timer = 0;
1516 qp_attr->pkey_index = 0;
1517 qp_attr->port_num = 1;
1518 rdma_ah_set_path_bits(&qp_attr->ah_attr, 0);
1519 rdma_ah_set_static_rate(&qp_attr->ah_attr, 0);
1520 qp_attr->alt_pkey_index = 0;
1521 qp_attr->alt_port_num = 0;
1522 qp_attr->alt_timeout = 0;
1523 memset(&qp_attr->alt_ah_attr, 0, sizeof(qp_attr->alt_ah_attr));
1524 qp_state = (params.max_sge_recv_flags & OCRDMA_QP_PARAMS_STATE_MASK) >>
1525 OCRDMA_QP_PARAMS_STATE_SHIFT;
1526 qp_attr->qp_state = get_ibqp_state(qp_state);
1527 qp_attr->cur_qp_state = qp_attr->qp_state;
1528 qp_attr->sq_draining = (qp_state == OCRDMA_QPS_SQ_DRAINING) ? 1 : 0;
1529 qp_attr->max_dest_rd_atomic =
1530 params.max_ord_ird >> OCRDMA_QP_PARAMS_MAX_ORD_SHIFT;
1531 qp_attr->max_rd_atomic =
1532 params.max_ord_ird & OCRDMA_QP_PARAMS_MAX_IRD_MASK;
1533 qp_attr->en_sqd_async_notify = (params.max_sge_recv_flags &
1534 OCRDMA_QP_PARAMS_FLAGS_SQD_ASYNC) ? 1 : 0;
1535 /* Sync driver QP state with FW */
1536 ocrdma_qp_state_change(qp, qp_attr->qp_state, NULL);
1541 static void ocrdma_srq_toggle_bit(struct ocrdma_srq *srq, unsigned int idx)
1543 unsigned int i = idx / 32;
1544 u32 mask = (1U << (idx % 32));
1546 srq->idx_bit_fields[i] ^= mask;
1549 static int ocrdma_hwq_free_cnt(struct ocrdma_qp_hwq_info *q)
1551 return ((q->max_wqe_idx - q->head) + q->tail) % q->max_cnt;
1554 static int is_hw_sq_empty(struct ocrdma_qp *qp)
1556 return (qp->sq.tail == qp->sq.head);
1559 static int is_hw_rq_empty(struct ocrdma_qp *qp)
1561 return (qp->rq.tail == qp->rq.head);
1564 static void *ocrdma_hwq_head(struct ocrdma_qp_hwq_info *q)
1566 return q->va + (q->head * q->entry_size);
1569 static void *ocrdma_hwq_head_from_idx(struct ocrdma_qp_hwq_info *q,
1572 return q->va + (idx * q->entry_size);
1575 static void ocrdma_hwq_inc_head(struct ocrdma_qp_hwq_info *q)
1577 q->head = (q->head + 1) & q->max_wqe_idx;
1580 static void ocrdma_hwq_inc_tail(struct ocrdma_qp_hwq_info *q)
1582 q->tail = (q->tail + 1) & q->max_wqe_idx;
1585 /* discard the cqe for a given QP */
1586 static void ocrdma_discard_cqes(struct ocrdma_qp *qp, struct ocrdma_cq *cq)
1588 unsigned long cq_flags;
1589 unsigned long flags;
1590 int discard_cnt = 0;
1591 u32 cur_getp, stop_getp;
1592 struct ocrdma_cqe *cqe;
1593 u32 qpn = 0, wqe_idx = 0;
1595 spin_lock_irqsave(&cq->cq_lock, cq_flags);
1597 /* traverse through the CQEs in the hw CQ,
1598 * find the matching CQE for a given qp,
1599 * mark the matching one discarded by clearing qpn.
1600 * ring the doorbell in the poll_cq() as
1601 * we don't complete out of order cqe.
1604 cur_getp = cq->getp;
1605 /* find upto when do we reap the cq. */
1606 stop_getp = cur_getp;
1608 if (is_hw_sq_empty(qp) && (!qp->srq && is_hw_rq_empty(qp)))
1611 cqe = cq->va + cur_getp;
1612 /* if (a) done reaping whole hw cq, or
1613 * (b) qp_xq becomes empty.
1616 qpn = cqe->cmn.qpn & OCRDMA_CQE_QPN_MASK;
1617 /* if previously discarded cqe found, skip that too. */
1618 /* check for matching qp */
1619 if (qpn == 0 || qpn != qp->id)
1622 if (is_cqe_for_sq(cqe)) {
1623 ocrdma_hwq_inc_tail(&qp->sq);
1626 wqe_idx = (le32_to_cpu(cqe->rq.buftag_qpn) >>
1627 OCRDMA_CQE_BUFTAG_SHIFT) &
1628 qp->srq->rq.max_wqe_idx;
1629 BUG_ON(wqe_idx < 1);
1630 spin_lock_irqsave(&qp->srq->q_lock, flags);
1631 ocrdma_hwq_inc_tail(&qp->srq->rq);
1632 ocrdma_srq_toggle_bit(qp->srq, wqe_idx - 1);
1633 spin_unlock_irqrestore(&qp->srq->q_lock, flags);
1636 ocrdma_hwq_inc_tail(&qp->rq);
1639 /* mark cqe discarded so that it is not picked up later
1645 cur_getp = (cur_getp + 1) % cq->max_hw_cqe;
1646 } while (cur_getp != stop_getp);
1647 spin_unlock_irqrestore(&cq->cq_lock, cq_flags);
1650 void ocrdma_del_flush_qp(struct ocrdma_qp *qp)
1653 unsigned long flags;
1654 struct ocrdma_dev *dev = get_ocrdma_dev(qp->ibqp.device);
1655 /* sync with any active CQ poll */
1657 spin_lock_irqsave(&dev->flush_q_lock, flags);
1658 found = ocrdma_is_qp_in_sq_flushlist(qp->sq_cq, qp);
1660 list_del(&qp->sq_entry);
1662 found = ocrdma_is_qp_in_rq_flushlist(qp->rq_cq, qp);
1664 list_del(&qp->rq_entry);
1666 spin_unlock_irqrestore(&dev->flush_q_lock, flags);
1669 int ocrdma_destroy_qp(struct ib_qp *ibqp, struct ib_udata *udata)
1671 struct ocrdma_pd *pd;
1672 struct ocrdma_qp *qp;
1673 struct ocrdma_dev *dev;
1674 struct ib_qp_attr attrs;
1676 unsigned long flags;
1678 qp = get_ocrdma_qp(ibqp);
1679 dev = get_ocrdma_dev(ibqp->device);
1683 /* change the QP state to ERROR */
1684 if (qp->state != OCRDMA_QPS_RST) {
1685 attrs.qp_state = IB_QPS_ERR;
1686 attr_mask = IB_QP_STATE;
1687 _ocrdma_modify_qp(ibqp, &attrs, attr_mask);
1689 /* ensure that CQEs for newly created QP (whose id may be same with
1690 * one which just getting destroyed are same), dont get
1691 * discarded until the old CQEs are discarded.
1693 mutex_lock(&dev->dev_lock);
1694 (void) ocrdma_mbx_destroy_qp(dev, qp);
1697 * acquire CQ lock while destroy is in progress, in order to
1698 * protect against proessing in-flight CQEs for this QP.
1700 spin_lock_irqsave(&qp->sq_cq->cq_lock, flags);
1701 if (qp->rq_cq && (qp->rq_cq != qp->sq_cq)) {
1702 spin_lock(&qp->rq_cq->cq_lock);
1703 ocrdma_del_qpn_map(dev, qp);
1704 spin_unlock(&qp->rq_cq->cq_lock);
1706 ocrdma_del_qpn_map(dev, qp);
1708 spin_unlock_irqrestore(&qp->sq_cq->cq_lock, flags);
1711 ocrdma_discard_cqes(qp, qp->sq_cq);
1712 ocrdma_discard_cqes(qp, qp->rq_cq);
1714 mutex_unlock(&dev->dev_lock);
1717 ocrdma_del_mmap(pd->uctx, (u64) qp->sq.pa,
1718 PAGE_ALIGN(qp->sq.len));
1720 ocrdma_del_mmap(pd->uctx, (u64) qp->rq.pa,
1721 PAGE_ALIGN(qp->rq.len));
1724 ocrdma_del_flush_qp(qp);
1726 kfree(qp->wqe_wr_id_tbl);
1727 kfree(qp->rqe_wr_id_tbl);
1732 static int ocrdma_copy_srq_uresp(struct ocrdma_dev *dev, struct ocrdma_srq *srq,
1733 struct ib_udata *udata)
1736 struct ocrdma_create_srq_uresp uresp;
1738 memset(&uresp, 0, sizeof(uresp));
1739 uresp.rq_dbid = srq->rq.dbid;
1740 uresp.num_rq_pages = 1;
1741 uresp.rq_page_addr[0] = virt_to_phys(srq->rq.va);
1742 uresp.rq_page_size = srq->rq.len;
1743 uresp.db_page_addr = dev->nic_info.unmapped_db +
1744 (srq->pd->id * dev->nic_info.db_page_size);
1745 uresp.db_page_size = dev->nic_info.db_page_size;
1746 uresp.num_rqe_allocated = srq->rq.max_cnt;
1747 if (ocrdma_get_asic_type(dev) == OCRDMA_ASIC_GEN_SKH_R) {
1748 uresp.db_rq_offset = OCRDMA_DB_GEN2_RQ_OFFSET;
1749 uresp.db_shift = 24;
1751 uresp.db_rq_offset = OCRDMA_DB_RQ_OFFSET;
1752 uresp.db_shift = 16;
1755 status = ib_copy_to_udata(udata, &uresp, sizeof(uresp));
1758 status = ocrdma_add_mmap(srq->pd->uctx, uresp.rq_page_addr[0],
1759 uresp.rq_page_size);
1765 int ocrdma_create_srq(struct ib_srq *ibsrq, struct ib_srq_init_attr *init_attr,
1766 struct ib_udata *udata)
1769 struct ocrdma_pd *pd = get_ocrdma_pd(ibsrq->pd);
1770 struct ocrdma_dev *dev = get_ocrdma_dev(ibsrq->device);
1771 struct ocrdma_srq *srq = get_ocrdma_srq(ibsrq);
1773 if (init_attr->attr.max_sge > dev->attr.max_recv_sge)
1775 if (init_attr->attr.max_wr > dev->attr.max_rqe)
1778 spin_lock_init(&srq->q_lock);
1780 srq->db = dev->nic_info.db + (pd->id * dev->nic_info.db_page_size);
1781 status = ocrdma_mbx_create_srq(dev, srq, init_attr, pd);
1786 srq->rqe_wr_id_tbl = kcalloc(srq->rq.max_cnt, sizeof(u64),
1788 if (!srq->rqe_wr_id_tbl) {
1793 srq->bit_fields_len = (srq->rq.max_cnt / 32) +
1794 (srq->rq.max_cnt % 32 ? 1 : 0);
1795 srq->idx_bit_fields =
1796 kmalloc_array(srq->bit_fields_len, sizeof(u32),
1798 if (!srq->idx_bit_fields) {
1802 memset(srq->idx_bit_fields, 0xff,
1803 srq->bit_fields_len * sizeof(u32));
1806 if (init_attr->attr.srq_limit) {
1807 status = ocrdma_mbx_modify_srq(srq, &init_attr->attr);
1813 status = ocrdma_copy_srq_uresp(dev, srq, udata);
1821 ocrdma_mbx_destroy_srq(dev, srq);
1822 kfree(srq->rqe_wr_id_tbl);
1823 kfree(srq->idx_bit_fields);
1827 int ocrdma_modify_srq(struct ib_srq *ibsrq,
1828 struct ib_srq_attr *srq_attr,
1829 enum ib_srq_attr_mask srq_attr_mask,
1830 struct ib_udata *udata)
1833 struct ocrdma_srq *srq;
1835 srq = get_ocrdma_srq(ibsrq);
1836 if (srq_attr_mask & IB_SRQ_MAX_WR)
1839 status = ocrdma_mbx_modify_srq(srq, srq_attr);
1843 int ocrdma_query_srq(struct ib_srq *ibsrq, struct ib_srq_attr *srq_attr)
1846 struct ocrdma_srq *srq;
1848 srq = get_ocrdma_srq(ibsrq);
1849 status = ocrdma_mbx_query_srq(srq, srq_attr);
1853 int ocrdma_destroy_srq(struct ib_srq *ibsrq, struct ib_udata *udata)
1855 struct ocrdma_srq *srq;
1856 struct ocrdma_dev *dev = get_ocrdma_dev(ibsrq->device);
1858 srq = get_ocrdma_srq(ibsrq);
1860 ocrdma_mbx_destroy_srq(dev, srq);
1863 ocrdma_del_mmap(srq->pd->uctx, (u64) srq->rq.pa,
1864 PAGE_ALIGN(srq->rq.len));
1866 kfree(srq->idx_bit_fields);
1867 kfree(srq->rqe_wr_id_tbl);
1871 /* unprivileged verbs and their support functions. */
1872 static void ocrdma_build_ud_hdr(struct ocrdma_qp *qp,
1873 struct ocrdma_hdr_wqe *hdr,
1874 const struct ib_send_wr *wr)
1876 struct ocrdma_ewqe_ud_hdr *ud_hdr =
1877 (struct ocrdma_ewqe_ud_hdr *)(hdr + 1);
1878 struct ocrdma_ah *ah = get_ocrdma_ah(ud_wr(wr)->ah);
1880 ud_hdr->rsvd_dest_qpn = ud_wr(wr)->remote_qpn;
1881 if (qp->qp_type == IB_QPT_GSI)
1882 ud_hdr->qkey = qp->qkey;
1884 ud_hdr->qkey = ud_wr(wr)->remote_qkey;
1885 ud_hdr->rsvd_ahid = ah->id;
1886 ud_hdr->hdr_type = ah->hdr_type;
1887 if (ah->av->valid & OCRDMA_AV_VLAN_VALID)
1888 hdr->cw |= (OCRDMA_FLAG_AH_VLAN_PR << OCRDMA_WQE_FLAGS_SHIFT);
1891 static void ocrdma_build_sges(struct ocrdma_hdr_wqe *hdr,
1892 struct ocrdma_sge *sge, int num_sge,
1893 struct ib_sge *sg_list)
1897 for (i = 0; i < num_sge; i++) {
1898 sge[i].lrkey = sg_list[i].lkey;
1899 sge[i].addr_lo = sg_list[i].addr;
1900 sge[i].addr_hi = upper_32_bits(sg_list[i].addr);
1901 sge[i].len = sg_list[i].length;
1902 hdr->total_len += sg_list[i].length;
1905 memset(sge, 0, sizeof(*sge));
1908 static inline uint32_t ocrdma_sglist_len(struct ib_sge *sg_list, int num_sge)
1910 uint32_t total_len = 0, i;
1912 for (i = 0; i < num_sge; i++)
1913 total_len += sg_list[i].length;
1918 static int ocrdma_build_inline_sges(struct ocrdma_qp *qp,
1919 struct ocrdma_hdr_wqe *hdr,
1920 struct ocrdma_sge *sge,
1921 const struct ib_send_wr *wr, u32 wqe_size)
1926 if (wr->send_flags & IB_SEND_INLINE && qp->qp_type != IB_QPT_UD) {
1927 hdr->total_len = ocrdma_sglist_len(wr->sg_list, wr->num_sge);
1928 if (unlikely(hdr->total_len > qp->max_inline_data)) {
1929 pr_err("%s() supported_len=0x%x,\n"
1930 " unsupported len req=0x%x\n", __func__,
1931 qp->max_inline_data, hdr->total_len);
1934 dpp_addr = (char *)sge;
1935 for (i = 0; i < wr->num_sge; i++) {
1937 (void *)(unsigned long)wr->sg_list[i].addr,
1938 wr->sg_list[i].length);
1939 dpp_addr += wr->sg_list[i].length;
1942 wqe_size += roundup(hdr->total_len, OCRDMA_WQE_ALIGN_BYTES);
1943 if (0 == hdr->total_len)
1944 wqe_size += sizeof(struct ocrdma_sge);
1945 hdr->cw |= (OCRDMA_TYPE_INLINE << OCRDMA_WQE_TYPE_SHIFT);
1947 ocrdma_build_sges(hdr, sge, wr->num_sge, wr->sg_list);
1949 wqe_size += (wr->num_sge * sizeof(struct ocrdma_sge));
1951 wqe_size += sizeof(struct ocrdma_sge);
1952 hdr->cw |= (OCRDMA_TYPE_LKEY << OCRDMA_WQE_TYPE_SHIFT);
1954 hdr->cw |= ((wqe_size / OCRDMA_WQE_STRIDE) << OCRDMA_WQE_SIZE_SHIFT);
1958 static int ocrdma_build_send(struct ocrdma_qp *qp, struct ocrdma_hdr_wqe *hdr,
1959 const struct ib_send_wr *wr)
1962 struct ocrdma_sge *sge;
1963 u32 wqe_size = sizeof(*hdr);
1965 if (qp->qp_type == IB_QPT_UD || qp->qp_type == IB_QPT_GSI) {
1966 ocrdma_build_ud_hdr(qp, hdr, wr);
1967 sge = (struct ocrdma_sge *)(hdr + 2);
1968 wqe_size += sizeof(struct ocrdma_ewqe_ud_hdr);
1970 sge = (struct ocrdma_sge *)(hdr + 1);
1973 status = ocrdma_build_inline_sges(qp, hdr, sge, wr, wqe_size);
1977 static int ocrdma_build_write(struct ocrdma_qp *qp, struct ocrdma_hdr_wqe *hdr,
1978 const struct ib_send_wr *wr)
1981 struct ocrdma_sge *ext_rw = (struct ocrdma_sge *)(hdr + 1);
1982 struct ocrdma_sge *sge = ext_rw + 1;
1983 u32 wqe_size = sizeof(*hdr) + sizeof(*ext_rw);
1985 status = ocrdma_build_inline_sges(qp, hdr, sge, wr, wqe_size);
1988 ext_rw->addr_lo = rdma_wr(wr)->remote_addr;
1989 ext_rw->addr_hi = upper_32_bits(rdma_wr(wr)->remote_addr);
1990 ext_rw->lrkey = rdma_wr(wr)->rkey;
1991 ext_rw->len = hdr->total_len;
1995 static void ocrdma_build_read(struct ocrdma_qp *qp, struct ocrdma_hdr_wqe *hdr,
1996 const struct ib_send_wr *wr)
1998 struct ocrdma_sge *ext_rw = (struct ocrdma_sge *)(hdr + 1);
1999 struct ocrdma_sge *sge = ext_rw + 1;
2000 u32 wqe_size = ((wr->num_sge + 1) * sizeof(struct ocrdma_sge)) +
2001 sizeof(struct ocrdma_hdr_wqe);
2003 ocrdma_build_sges(hdr, sge, wr->num_sge, wr->sg_list);
2004 hdr->cw |= ((wqe_size / OCRDMA_WQE_STRIDE) << OCRDMA_WQE_SIZE_SHIFT);
2005 hdr->cw |= (OCRDMA_READ << OCRDMA_WQE_OPCODE_SHIFT);
2006 hdr->cw |= (OCRDMA_TYPE_LKEY << OCRDMA_WQE_TYPE_SHIFT);
2008 ext_rw->addr_lo = rdma_wr(wr)->remote_addr;
2009 ext_rw->addr_hi = upper_32_bits(rdma_wr(wr)->remote_addr);
2010 ext_rw->lrkey = rdma_wr(wr)->rkey;
2011 ext_rw->len = hdr->total_len;
2014 static int get_encoded_page_size(int pg_sz)
2016 /* Max size is 256M 4096 << 16 */
2019 if (pg_sz == (4096 << i))
2024 static int ocrdma_build_reg(struct ocrdma_qp *qp,
2025 struct ocrdma_hdr_wqe *hdr,
2026 const struct ib_reg_wr *wr)
2029 struct ocrdma_ewqe_fr *fast_reg = (struct ocrdma_ewqe_fr *)(hdr + 1);
2030 struct ocrdma_mr *mr = get_ocrdma_mr(wr->mr);
2031 struct ocrdma_pbl *pbl_tbl = mr->hwmr.pbl_table;
2032 struct ocrdma_pbe *pbe;
2033 u32 wqe_size = sizeof(*fast_reg) + sizeof(*hdr);
2034 int num_pbes = 0, i;
2036 wqe_size = roundup(wqe_size, OCRDMA_WQE_ALIGN_BYTES);
2038 hdr->cw |= (OCRDMA_FR_MR << OCRDMA_WQE_OPCODE_SHIFT);
2039 hdr->cw |= ((wqe_size / OCRDMA_WQE_STRIDE) << OCRDMA_WQE_SIZE_SHIFT);
2041 if (wr->access & IB_ACCESS_LOCAL_WRITE)
2042 hdr->rsvd_lkey_flags |= OCRDMA_LKEY_FLAG_LOCAL_WR;
2043 if (wr->access & IB_ACCESS_REMOTE_WRITE)
2044 hdr->rsvd_lkey_flags |= OCRDMA_LKEY_FLAG_REMOTE_WR;
2045 if (wr->access & IB_ACCESS_REMOTE_READ)
2046 hdr->rsvd_lkey_flags |= OCRDMA_LKEY_FLAG_REMOTE_RD;
2047 hdr->lkey = wr->key;
2048 hdr->total_len = mr->ibmr.length;
2050 fbo = mr->ibmr.iova - mr->pages[0];
2052 fast_reg->va_hi = upper_32_bits(mr->ibmr.iova);
2053 fast_reg->va_lo = (u32) (mr->ibmr.iova & 0xffffffff);
2054 fast_reg->fbo_hi = upper_32_bits(fbo);
2055 fast_reg->fbo_lo = (u32) fbo & 0xffffffff;
2056 fast_reg->num_sges = mr->npages;
2057 fast_reg->size_sge = get_encoded_page_size(mr->ibmr.page_size);
2060 for (i = 0; i < mr->npages; i++) {
2061 u64 buf_addr = mr->pages[i];
2063 pbe->pa_lo = cpu_to_le32((u32) (buf_addr & PAGE_MASK));
2064 pbe->pa_hi = cpu_to_le32((u32) upper_32_bits(buf_addr));
2068 /* if the pbl is full storing the pbes,
2071 if (num_pbes == (mr->hwmr.pbl_size/sizeof(u64))) {
2073 pbe = (struct ocrdma_pbe *)pbl_tbl->va;
2080 static void ocrdma_ring_sq_db(struct ocrdma_qp *qp)
2082 u32 val = qp->sq.dbid | (1 << OCRDMA_DB_SQ_SHIFT);
2084 iowrite32(val, qp->sq_db);
2087 int ocrdma_post_send(struct ib_qp *ibqp, const struct ib_send_wr *wr,
2088 const struct ib_send_wr **bad_wr)
2091 struct ocrdma_qp *qp = get_ocrdma_qp(ibqp);
2092 struct ocrdma_hdr_wqe *hdr;
2093 unsigned long flags;
2095 spin_lock_irqsave(&qp->q_lock, flags);
2096 if (qp->state != OCRDMA_QPS_RTS && qp->state != OCRDMA_QPS_SQD) {
2097 spin_unlock_irqrestore(&qp->q_lock, flags);
2103 if (qp->qp_type == IB_QPT_UD &&
2104 (wr->opcode != IB_WR_SEND &&
2105 wr->opcode != IB_WR_SEND_WITH_IMM)) {
2110 if (ocrdma_hwq_free_cnt(&qp->sq) == 0 ||
2111 wr->num_sge > qp->sq.max_sges) {
2116 hdr = ocrdma_hwq_head(&qp->sq);
2118 if (wr->send_flags & IB_SEND_SIGNALED || qp->signaled)
2119 hdr->cw |= (OCRDMA_FLAG_SIG << OCRDMA_WQE_FLAGS_SHIFT);
2120 if (wr->send_flags & IB_SEND_FENCE)
2122 (OCRDMA_FLAG_FENCE_L << OCRDMA_WQE_FLAGS_SHIFT);
2123 if (wr->send_flags & IB_SEND_SOLICITED)
2125 (OCRDMA_FLAG_SOLICIT << OCRDMA_WQE_FLAGS_SHIFT);
2127 switch (wr->opcode) {
2128 case IB_WR_SEND_WITH_IMM:
2129 hdr->cw |= (OCRDMA_FLAG_IMM << OCRDMA_WQE_FLAGS_SHIFT);
2130 hdr->immdt = ntohl(wr->ex.imm_data);
2133 hdr->cw |= (OCRDMA_SEND << OCRDMA_WQE_OPCODE_SHIFT);
2134 ocrdma_build_send(qp, hdr, wr);
2136 case IB_WR_SEND_WITH_INV:
2137 hdr->cw |= (OCRDMA_FLAG_INV << OCRDMA_WQE_FLAGS_SHIFT);
2138 hdr->cw |= (OCRDMA_SEND << OCRDMA_WQE_OPCODE_SHIFT);
2139 hdr->lkey = wr->ex.invalidate_rkey;
2140 status = ocrdma_build_send(qp, hdr, wr);
2142 case IB_WR_RDMA_WRITE_WITH_IMM:
2143 hdr->cw |= (OCRDMA_FLAG_IMM << OCRDMA_WQE_FLAGS_SHIFT);
2144 hdr->immdt = ntohl(wr->ex.imm_data);
2146 case IB_WR_RDMA_WRITE:
2147 hdr->cw |= (OCRDMA_WRITE << OCRDMA_WQE_OPCODE_SHIFT);
2148 status = ocrdma_build_write(qp, hdr, wr);
2150 case IB_WR_RDMA_READ:
2151 ocrdma_build_read(qp, hdr, wr);
2153 case IB_WR_LOCAL_INV:
2155 (OCRDMA_LKEY_INV << OCRDMA_WQE_OPCODE_SHIFT);
2156 hdr->cw |= ((sizeof(struct ocrdma_hdr_wqe) +
2157 sizeof(struct ocrdma_sge)) /
2158 OCRDMA_WQE_STRIDE) << OCRDMA_WQE_SIZE_SHIFT;
2159 hdr->lkey = wr->ex.invalidate_rkey;
2162 status = ocrdma_build_reg(qp, hdr, reg_wr(wr));
2172 if (wr->send_flags & IB_SEND_SIGNALED || qp->signaled)
2173 qp->wqe_wr_id_tbl[qp->sq.head].signaled = 1;
2175 qp->wqe_wr_id_tbl[qp->sq.head].signaled = 0;
2176 qp->wqe_wr_id_tbl[qp->sq.head].wrid = wr->wr_id;
2177 ocrdma_cpu_to_le32(hdr, ((hdr->cw >> OCRDMA_WQE_SIZE_SHIFT) &
2178 OCRDMA_WQE_SIZE_MASK) * OCRDMA_WQE_STRIDE);
2179 /* make sure wqe is written before adapter can access it */
2181 /* inform hw to start processing it */
2182 ocrdma_ring_sq_db(qp);
2184 /* update pointer, counter for next wr */
2185 ocrdma_hwq_inc_head(&qp->sq);
2188 spin_unlock_irqrestore(&qp->q_lock, flags);
2192 static void ocrdma_ring_rq_db(struct ocrdma_qp *qp)
2194 u32 val = qp->rq.dbid | (1 << OCRDMA_DB_RQ_SHIFT);
2196 iowrite32(val, qp->rq_db);
2199 static void ocrdma_build_rqe(struct ocrdma_hdr_wqe *rqe,
2200 const struct ib_recv_wr *wr, u16 tag)
2203 struct ocrdma_sge *sge;
2205 wqe_size = (wr->num_sge * sizeof(*sge)) + sizeof(*rqe);
2207 wqe_size = sizeof(*sge) + sizeof(*rqe);
2209 rqe->cw = ((wqe_size / OCRDMA_WQE_STRIDE) <<
2210 OCRDMA_WQE_SIZE_SHIFT);
2211 rqe->cw |= (OCRDMA_FLAG_SIG << OCRDMA_WQE_FLAGS_SHIFT);
2212 rqe->cw |= (OCRDMA_TYPE_LKEY << OCRDMA_WQE_TYPE_SHIFT);
2214 rqe->rsvd_tag = tag;
2215 sge = (struct ocrdma_sge *)(rqe + 1);
2216 ocrdma_build_sges(rqe, sge, wr->num_sge, wr->sg_list);
2217 ocrdma_cpu_to_le32(rqe, wqe_size);
2220 int ocrdma_post_recv(struct ib_qp *ibqp, const struct ib_recv_wr *wr,
2221 const struct ib_recv_wr **bad_wr)
2224 unsigned long flags;
2225 struct ocrdma_qp *qp = get_ocrdma_qp(ibqp);
2226 struct ocrdma_hdr_wqe *rqe;
2228 spin_lock_irqsave(&qp->q_lock, flags);
2229 if (qp->state == OCRDMA_QPS_RST || qp->state == OCRDMA_QPS_ERR) {
2230 spin_unlock_irqrestore(&qp->q_lock, flags);
2235 if (ocrdma_hwq_free_cnt(&qp->rq) == 0 ||
2236 wr->num_sge > qp->rq.max_sges) {
2241 rqe = ocrdma_hwq_head(&qp->rq);
2242 ocrdma_build_rqe(rqe, wr, 0);
2244 qp->rqe_wr_id_tbl[qp->rq.head] = wr->wr_id;
2245 /* make sure rqe is written before adapter can access it */
2248 /* inform hw to start processing it */
2249 ocrdma_ring_rq_db(qp);
2251 /* update pointer, counter for next wr */
2252 ocrdma_hwq_inc_head(&qp->rq);
2255 spin_unlock_irqrestore(&qp->q_lock, flags);
2259 /* cqe for srq's rqe can potentially arrive out of order.
2260 * index gives the entry in the shadow table where to store
2261 * the wr_id. tag/index is returned in cqe to reference back
2264 static int ocrdma_srq_get_idx(struct ocrdma_srq *srq)
2269 for (row = 0; row < srq->bit_fields_len; row++) {
2270 if (srq->idx_bit_fields[row]) {
2271 indx = ffs(srq->idx_bit_fields[row]);
2272 indx = (row * 32) + (indx - 1);
2273 BUG_ON(indx >= srq->rq.max_cnt);
2274 ocrdma_srq_toggle_bit(srq, indx);
2279 BUG_ON(row == srq->bit_fields_len);
2280 return indx + 1; /* Use from index 1 */
2283 static void ocrdma_ring_srq_db(struct ocrdma_srq *srq)
2285 u32 val = srq->rq.dbid | (1 << 16);
2287 iowrite32(val, srq->db + OCRDMA_DB_GEN2_SRQ_OFFSET);
2290 int ocrdma_post_srq_recv(struct ib_srq *ibsrq, const struct ib_recv_wr *wr,
2291 const struct ib_recv_wr **bad_wr)
2294 unsigned long flags;
2295 struct ocrdma_srq *srq;
2296 struct ocrdma_hdr_wqe *rqe;
2299 srq = get_ocrdma_srq(ibsrq);
2301 spin_lock_irqsave(&srq->q_lock, flags);
2303 if (ocrdma_hwq_free_cnt(&srq->rq) == 0 ||
2304 wr->num_sge > srq->rq.max_sges) {
2309 tag = ocrdma_srq_get_idx(srq);
2310 rqe = ocrdma_hwq_head(&srq->rq);
2311 ocrdma_build_rqe(rqe, wr, tag);
2313 srq->rqe_wr_id_tbl[tag] = wr->wr_id;
2314 /* make sure rqe is written before adapter can perform DMA */
2316 /* inform hw to start processing it */
2317 ocrdma_ring_srq_db(srq);
2318 /* update pointer, counter for next wr */
2319 ocrdma_hwq_inc_head(&srq->rq);
2322 spin_unlock_irqrestore(&srq->q_lock, flags);
2326 static enum ib_wc_status ocrdma_to_ibwc_err(u16 status)
2328 enum ib_wc_status ibwc_status;
2331 case OCRDMA_CQE_GENERAL_ERR:
2332 ibwc_status = IB_WC_GENERAL_ERR;
2334 case OCRDMA_CQE_LOC_LEN_ERR:
2335 ibwc_status = IB_WC_LOC_LEN_ERR;
2337 case OCRDMA_CQE_LOC_QP_OP_ERR:
2338 ibwc_status = IB_WC_LOC_QP_OP_ERR;
2340 case OCRDMA_CQE_LOC_EEC_OP_ERR:
2341 ibwc_status = IB_WC_LOC_EEC_OP_ERR;
2343 case OCRDMA_CQE_LOC_PROT_ERR:
2344 ibwc_status = IB_WC_LOC_PROT_ERR;
2346 case OCRDMA_CQE_WR_FLUSH_ERR:
2347 ibwc_status = IB_WC_WR_FLUSH_ERR;
2349 case OCRDMA_CQE_MW_BIND_ERR:
2350 ibwc_status = IB_WC_MW_BIND_ERR;
2352 case OCRDMA_CQE_BAD_RESP_ERR:
2353 ibwc_status = IB_WC_BAD_RESP_ERR;
2355 case OCRDMA_CQE_LOC_ACCESS_ERR:
2356 ibwc_status = IB_WC_LOC_ACCESS_ERR;
2358 case OCRDMA_CQE_REM_INV_REQ_ERR:
2359 ibwc_status = IB_WC_REM_INV_REQ_ERR;
2361 case OCRDMA_CQE_REM_ACCESS_ERR:
2362 ibwc_status = IB_WC_REM_ACCESS_ERR;
2364 case OCRDMA_CQE_REM_OP_ERR:
2365 ibwc_status = IB_WC_REM_OP_ERR;
2367 case OCRDMA_CQE_RETRY_EXC_ERR:
2368 ibwc_status = IB_WC_RETRY_EXC_ERR;
2370 case OCRDMA_CQE_RNR_RETRY_EXC_ERR:
2371 ibwc_status = IB_WC_RNR_RETRY_EXC_ERR;
2373 case OCRDMA_CQE_LOC_RDD_VIOL_ERR:
2374 ibwc_status = IB_WC_LOC_RDD_VIOL_ERR;
2376 case OCRDMA_CQE_REM_INV_RD_REQ_ERR:
2377 ibwc_status = IB_WC_REM_INV_RD_REQ_ERR;
2379 case OCRDMA_CQE_REM_ABORT_ERR:
2380 ibwc_status = IB_WC_REM_ABORT_ERR;
2382 case OCRDMA_CQE_INV_EECN_ERR:
2383 ibwc_status = IB_WC_INV_EECN_ERR;
2385 case OCRDMA_CQE_INV_EEC_STATE_ERR:
2386 ibwc_status = IB_WC_INV_EEC_STATE_ERR;
2388 case OCRDMA_CQE_FATAL_ERR:
2389 ibwc_status = IB_WC_FATAL_ERR;
2391 case OCRDMA_CQE_RESP_TIMEOUT_ERR:
2392 ibwc_status = IB_WC_RESP_TIMEOUT_ERR;
2395 ibwc_status = IB_WC_GENERAL_ERR;
2401 static void ocrdma_update_wc(struct ocrdma_qp *qp, struct ib_wc *ibwc,
2404 struct ocrdma_hdr_wqe *hdr;
2405 struct ocrdma_sge *rw;
2408 hdr = ocrdma_hwq_head_from_idx(&qp->sq, wqe_idx);
2410 ibwc->wr_id = qp->wqe_wr_id_tbl[wqe_idx].wrid;
2411 /* Undo the hdr->cw swap */
2412 opcode = le32_to_cpu(hdr->cw) & OCRDMA_WQE_OPCODE_MASK;
2415 ibwc->opcode = IB_WC_RDMA_WRITE;
2418 rw = (struct ocrdma_sge *)(hdr + 1);
2419 ibwc->opcode = IB_WC_RDMA_READ;
2420 ibwc->byte_len = rw->len;
2423 ibwc->opcode = IB_WC_SEND;
2426 ibwc->opcode = IB_WC_REG_MR;
2428 case OCRDMA_LKEY_INV:
2429 ibwc->opcode = IB_WC_LOCAL_INV;
2432 ibwc->status = IB_WC_GENERAL_ERR;
2433 pr_err("%s() invalid opcode received = 0x%x\n",
2434 __func__, hdr->cw & OCRDMA_WQE_OPCODE_MASK);
2439 static void ocrdma_set_cqe_status_flushed(struct ocrdma_qp *qp,
2440 struct ocrdma_cqe *cqe)
2442 if (is_cqe_for_sq(cqe)) {
2443 cqe->flags_status_srcqpn = cpu_to_le32(le32_to_cpu(
2444 cqe->flags_status_srcqpn) &
2445 ~OCRDMA_CQE_STATUS_MASK);
2446 cqe->flags_status_srcqpn = cpu_to_le32(le32_to_cpu(
2447 cqe->flags_status_srcqpn) |
2448 (OCRDMA_CQE_WR_FLUSH_ERR <<
2449 OCRDMA_CQE_STATUS_SHIFT));
2451 if (qp->qp_type == IB_QPT_UD || qp->qp_type == IB_QPT_GSI) {
2452 cqe->flags_status_srcqpn = cpu_to_le32(le32_to_cpu(
2453 cqe->flags_status_srcqpn) &
2454 ~OCRDMA_CQE_UD_STATUS_MASK);
2455 cqe->flags_status_srcqpn = cpu_to_le32(le32_to_cpu(
2456 cqe->flags_status_srcqpn) |
2457 (OCRDMA_CQE_WR_FLUSH_ERR <<
2458 OCRDMA_CQE_UD_STATUS_SHIFT));
2460 cqe->flags_status_srcqpn = cpu_to_le32(le32_to_cpu(
2461 cqe->flags_status_srcqpn) &
2462 ~OCRDMA_CQE_STATUS_MASK);
2463 cqe->flags_status_srcqpn = cpu_to_le32(le32_to_cpu(
2464 cqe->flags_status_srcqpn) |
2465 (OCRDMA_CQE_WR_FLUSH_ERR <<
2466 OCRDMA_CQE_STATUS_SHIFT));
2471 static bool ocrdma_update_err_cqe(struct ib_wc *ibwc, struct ocrdma_cqe *cqe,
2472 struct ocrdma_qp *qp, int status)
2474 bool expand = false;
2477 ibwc->qp = &qp->ibqp;
2478 ibwc->status = ocrdma_to_ibwc_err(status);
2480 ocrdma_flush_qp(qp);
2481 ocrdma_qp_state_change(qp, IB_QPS_ERR, NULL);
2483 /* if wqe/rqe pending for which cqe needs to be returned,
2484 * trigger inflating it.
2486 if (!is_hw_rq_empty(qp) || !is_hw_sq_empty(qp)) {
2488 ocrdma_set_cqe_status_flushed(qp, cqe);
2493 static int ocrdma_update_err_rcqe(struct ib_wc *ibwc, struct ocrdma_cqe *cqe,
2494 struct ocrdma_qp *qp, int status)
2496 ibwc->opcode = IB_WC_RECV;
2497 ibwc->wr_id = qp->rqe_wr_id_tbl[qp->rq.tail];
2498 ocrdma_hwq_inc_tail(&qp->rq);
2500 return ocrdma_update_err_cqe(ibwc, cqe, qp, status);
2503 static int ocrdma_update_err_scqe(struct ib_wc *ibwc, struct ocrdma_cqe *cqe,
2504 struct ocrdma_qp *qp, int status)
2506 ocrdma_update_wc(qp, ibwc, qp->sq.tail);
2507 ocrdma_hwq_inc_tail(&qp->sq);
2509 return ocrdma_update_err_cqe(ibwc, cqe, qp, status);
2513 static bool ocrdma_poll_err_scqe(struct ocrdma_qp *qp,
2514 struct ocrdma_cqe *cqe, struct ib_wc *ibwc,
2515 bool *polled, bool *stop)
2518 struct ocrdma_dev *dev = get_ocrdma_dev(qp->ibqp.device);
2519 int status = (le32_to_cpu(cqe->flags_status_srcqpn) &
2520 OCRDMA_CQE_STATUS_MASK) >> OCRDMA_CQE_STATUS_SHIFT;
2521 if (status < OCRDMA_MAX_CQE_ERR)
2522 atomic_inc(&dev->cqe_err_stats[status]);
2524 /* when hw sq is empty, but rq is not empty, so we continue
2525 * to keep the cqe in order to get the cq event again.
2527 if (is_hw_sq_empty(qp) && !is_hw_rq_empty(qp)) {
2528 /* when cq for rq and sq is same, it is safe to return
2529 * flush cqe for RQEs.
2531 if (!qp->srq && (qp->sq_cq == qp->rq_cq)) {
2533 status = OCRDMA_CQE_WR_FLUSH_ERR;
2534 expand = ocrdma_update_err_rcqe(ibwc, cqe, qp, status);
2536 /* stop processing further cqe as this cqe is used for
2537 * triggering cq event on buddy cq of RQ.
2538 * When QP is destroyed, this cqe will be removed
2539 * from the cq's hardware q.
2545 } else if (is_hw_sq_empty(qp)) {
2552 expand = ocrdma_update_err_scqe(ibwc, cqe, qp, status);
2557 static bool ocrdma_poll_success_scqe(struct ocrdma_qp *qp,
2558 struct ocrdma_cqe *cqe,
2559 struct ib_wc *ibwc, bool *polled)
2561 bool expand = false;
2562 int tail = qp->sq.tail;
2565 if (!qp->wqe_wr_id_tbl[tail].signaled) {
2566 *polled = false; /* WC cannot be consumed yet */
2568 ibwc->status = IB_WC_SUCCESS;
2570 ibwc->qp = &qp->ibqp;
2571 ocrdma_update_wc(qp, ibwc, tail);
2574 wqe_idx = (le32_to_cpu(cqe->wq.wqeidx) &
2575 OCRDMA_CQE_WQEIDX_MASK) & qp->sq.max_wqe_idx;
2576 if (tail != wqe_idx)
2577 expand = true; /* Coalesced CQE can't be consumed yet */
2579 ocrdma_hwq_inc_tail(&qp->sq);
2583 static bool ocrdma_poll_scqe(struct ocrdma_qp *qp, struct ocrdma_cqe *cqe,
2584 struct ib_wc *ibwc, bool *polled, bool *stop)
2589 status = (le32_to_cpu(cqe->flags_status_srcqpn) &
2590 OCRDMA_CQE_STATUS_MASK) >> OCRDMA_CQE_STATUS_SHIFT;
2592 if (status == OCRDMA_CQE_SUCCESS)
2593 expand = ocrdma_poll_success_scqe(qp, cqe, ibwc, polled);
2595 expand = ocrdma_poll_err_scqe(qp, cqe, ibwc, polled, stop);
2599 static int ocrdma_update_ud_rcqe(struct ocrdma_dev *dev, struct ib_wc *ibwc,
2600 struct ocrdma_cqe *cqe)
2605 status = (le32_to_cpu(cqe->flags_status_srcqpn) &
2606 OCRDMA_CQE_UD_STATUS_MASK) >> OCRDMA_CQE_UD_STATUS_SHIFT;
2607 ibwc->src_qp = le32_to_cpu(cqe->flags_status_srcqpn) &
2608 OCRDMA_CQE_SRCQP_MASK;
2609 ibwc->pkey_index = 0;
2610 ibwc->wc_flags = IB_WC_GRH;
2611 ibwc->byte_len = (le32_to_cpu(cqe->ud.rxlen_pkey) >>
2612 OCRDMA_CQE_UD_XFER_LEN_SHIFT) &
2613 OCRDMA_CQE_UD_XFER_LEN_MASK;
2615 if (ocrdma_is_udp_encap_supported(dev)) {
2616 hdr_type = (le32_to_cpu(cqe->ud.rxlen_pkey) >>
2617 OCRDMA_CQE_UD_L3TYPE_SHIFT) &
2618 OCRDMA_CQE_UD_L3TYPE_MASK;
2619 ibwc->wc_flags |= IB_WC_WITH_NETWORK_HDR_TYPE;
2620 ibwc->network_hdr_type = hdr_type;
2626 static void ocrdma_update_free_srq_cqe(struct ib_wc *ibwc,
2627 struct ocrdma_cqe *cqe,
2628 struct ocrdma_qp *qp)
2630 unsigned long flags;
2631 struct ocrdma_srq *srq;
2634 srq = get_ocrdma_srq(qp->ibqp.srq);
2635 wqe_idx = (le32_to_cpu(cqe->rq.buftag_qpn) >>
2636 OCRDMA_CQE_BUFTAG_SHIFT) & srq->rq.max_wqe_idx;
2637 BUG_ON(wqe_idx < 1);
2639 ibwc->wr_id = srq->rqe_wr_id_tbl[wqe_idx];
2640 spin_lock_irqsave(&srq->q_lock, flags);
2641 ocrdma_srq_toggle_bit(srq, wqe_idx - 1);
2642 spin_unlock_irqrestore(&srq->q_lock, flags);
2643 ocrdma_hwq_inc_tail(&srq->rq);
2646 static bool ocrdma_poll_err_rcqe(struct ocrdma_qp *qp, struct ocrdma_cqe *cqe,
2647 struct ib_wc *ibwc, bool *polled, bool *stop,
2651 struct ocrdma_dev *dev = get_ocrdma_dev(qp->ibqp.device);
2653 if (status < OCRDMA_MAX_CQE_ERR)
2654 atomic_inc(&dev->cqe_err_stats[status]);
2656 /* when hw_rq is empty, but wq is not empty, so continue
2657 * to keep the cqe to get the cq event again.
2659 if (is_hw_rq_empty(qp) && !is_hw_sq_empty(qp)) {
2660 if (!qp->srq && (qp->sq_cq == qp->rq_cq)) {
2662 status = OCRDMA_CQE_WR_FLUSH_ERR;
2663 expand = ocrdma_update_err_scqe(ibwc, cqe, qp, status);
2669 } else if (is_hw_rq_empty(qp)) {
2676 expand = ocrdma_update_err_rcqe(ibwc, cqe, qp, status);
2681 static void ocrdma_poll_success_rcqe(struct ocrdma_qp *qp,
2682 struct ocrdma_cqe *cqe, struct ib_wc *ibwc)
2684 struct ocrdma_dev *dev;
2686 dev = get_ocrdma_dev(qp->ibqp.device);
2687 ibwc->opcode = IB_WC_RECV;
2688 ibwc->qp = &qp->ibqp;
2689 ibwc->status = IB_WC_SUCCESS;
2691 if (qp->qp_type == IB_QPT_UD || qp->qp_type == IB_QPT_GSI)
2692 ocrdma_update_ud_rcqe(dev, ibwc, cqe);
2694 ibwc->byte_len = le32_to_cpu(cqe->rq.rxlen);
2696 if (is_cqe_imm(cqe)) {
2697 ibwc->ex.imm_data = htonl(le32_to_cpu(cqe->rq.lkey_immdt));
2698 ibwc->wc_flags |= IB_WC_WITH_IMM;
2699 } else if (is_cqe_wr_imm(cqe)) {
2700 ibwc->opcode = IB_WC_RECV_RDMA_WITH_IMM;
2701 ibwc->ex.imm_data = htonl(le32_to_cpu(cqe->rq.lkey_immdt));
2702 ibwc->wc_flags |= IB_WC_WITH_IMM;
2703 } else if (is_cqe_invalidated(cqe)) {
2704 ibwc->ex.invalidate_rkey = le32_to_cpu(cqe->rq.lkey_immdt);
2705 ibwc->wc_flags |= IB_WC_WITH_INVALIDATE;
2708 ocrdma_update_free_srq_cqe(ibwc, cqe, qp);
2710 ibwc->wr_id = qp->rqe_wr_id_tbl[qp->rq.tail];
2711 ocrdma_hwq_inc_tail(&qp->rq);
2715 static bool ocrdma_poll_rcqe(struct ocrdma_qp *qp, struct ocrdma_cqe *cqe,
2716 struct ib_wc *ibwc, bool *polled, bool *stop)
2719 bool expand = false;
2722 if (qp->qp_type == IB_QPT_UD || qp->qp_type == IB_QPT_GSI) {
2723 status = (le32_to_cpu(cqe->flags_status_srcqpn) &
2724 OCRDMA_CQE_UD_STATUS_MASK) >>
2725 OCRDMA_CQE_UD_STATUS_SHIFT;
2727 status = (le32_to_cpu(cqe->flags_status_srcqpn) &
2728 OCRDMA_CQE_STATUS_MASK) >> OCRDMA_CQE_STATUS_SHIFT;
2731 if (status == OCRDMA_CQE_SUCCESS) {
2733 ocrdma_poll_success_rcqe(qp, cqe, ibwc);
2735 expand = ocrdma_poll_err_rcqe(qp, cqe, ibwc, polled, stop,
2741 static void ocrdma_change_cq_phase(struct ocrdma_cq *cq, struct ocrdma_cqe *cqe,
2744 if (cq->phase_change) {
2746 cq->phase = (~cq->phase & OCRDMA_CQE_VALID);
2748 /* clear valid bit */
2749 cqe->flags_status_srcqpn = 0;
2753 static int ocrdma_poll_hwcq(struct ocrdma_cq *cq, int num_entries,
2758 bool expand = false;
2759 int polled_hw_cqes = 0;
2760 struct ocrdma_qp *qp = NULL;
2761 struct ocrdma_dev *dev = get_ocrdma_dev(cq->ibcq.device);
2762 struct ocrdma_cqe *cqe;
2763 u16 cur_getp; bool polled = false; bool stop = false;
2765 cur_getp = cq->getp;
2766 while (num_entries) {
2767 cqe = cq->va + cur_getp;
2768 /* check whether valid cqe or not */
2769 if (!is_cqe_valid(cq, cqe))
2771 qpn = (le32_to_cpu(cqe->cmn.qpn) & OCRDMA_CQE_QPN_MASK);
2772 /* ignore discarded cqe */
2775 qp = dev->qp_tbl[qpn];
2778 if (is_cqe_for_sq(cqe)) {
2779 expand = ocrdma_poll_scqe(qp, cqe, ibwc, &polled,
2782 expand = ocrdma_poll_rcqe(qp, cqe, ibwc, &polled,
2789 /* clear qpn to avoid duplicate processing by discard_cqe() */
2792 polled_hw_cqes += 1;
2793 cur_getp = (cur_getp + 1) % cq->max_hw_cqe;
2794 ocrdma_change_cq_phase(cq, cqe, cur_getp);
2804 cq->getp = cur_getp;
2807 ocrdma_ring_cq_db(dev, cq->id, false, false, polled_hw_cqes);
2812 /* insert error cqe if the QP's SQ or RQ's CQ matches the CQ under poll. */
2813 static int ocrdma_add_err_cqe(struct ocrdma_cq *cq, int num_entries,
2814 struct ocrdma_qp *qp, struct ib_wc *ibwc)
2818 while (num_entries) {
2819 if (is_hw_sq_empty(qp) && is_hw_rq_empty(qp))
2821 if (!is_hw_sq_empty(qp) && qp->sq_cq == cq) {
2822 ocrdma_update_wc(qp, ibwc, qp->sq.tail);
2823 ocrdma_hwq_inc_tail(&qp->sq);
2824 } else if (!is_hw_rq_empty(qp) && qp->rq_cq == cq) {
2825 ibwc->wr_id = qp->rqe_wr_id_tbl[qp->rq.tail];
2826 ocrdma_hwq_inc_tail(&qp->rq);
2831 ibwc->status = IB_WC_WR_FLUSH_ERR;
2839 int ocrdma_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc)
2841 int cqes_to_poll = num_entries;
2842 struct ocrdma_cq *cq = get_ocrdma_cq(ibcq);
2843 struct ocrdma_dev *dev = get_ocrdma_dev(ibcq->device);
2844 int num_os_cqe = 0, err_cqes = 0;
2845 struct ocrdma_qp *qp;
2846 unsigned long flags;
2848 /* poll cqes from adapter CQ */
2849 spin_lock_irqsave(&cq->cq_lock, flags);
2850 num_os_cqe = ocrdma_poll_hwcq(cq, cqes_to_poll, wc);
2851 spin_unlock_irqrestore(&cq->cq_lock, flags);
2852 cqes_to_poll -= num_os_cqe;
2855 wc = wc + num_os_cqe;
2856 /* adapter returns single error cqe when qp moves to
2857 * error state. So insert error cqes with wc_status as
2858 * FLUSHED for pending WQEs and RQEs of QP's SQ and RQ
2859 * respectively which uses this CQ.
2861 spin_lock_irqsave(&dev->flush_q_lock, flags);
2862 list_for_each_entry(qp, &cq->sq_head, sq_entry) {
2863 if (cqes_to_poll == 0)
2865 err_cqes = ocrdma_add_err_cqe(cq, cqes_to_poll, qp, wc);
2866 cqes_to_poll -= err_cqes;
2867 num_os_cqe += err_cqes;
2870 spin_unlock_irqrestore(&dev->flush_q_lock, flags);
2875 int ocrdma_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags cq_flags)
2877 struct ocrdma_cq *cq = get_ocrdma_cq(ibcq);
2878 struct ocrdma_dev *dev = get_ocrdma_dev(ibcq->device);
2880 unsigned long flags;
2881 bool arm_needed = false, sol_needed = false;
2885 spin_lock_irqsave(&cq->cq_lock, flags);
2886 if (cq_flags & IB_CQ_NEXT_COMP || cq_flags & IB_CQ_SOLICITED)
2888 if (cq_flags & IB_CQ_SOLICITED)
2891 ocrdma_ring_cq_db(dev, cq_id, arm_needed, sol_needed, 0);
2892 spin_unlock_irqrestore(&cq->cq_lock, flags);
2897 struct ib_mr *ocrdma_alloc_mr(struct ib_pd *ibpd, enum ib_mr_type mr_type,
2901 struct ocrdma_mr *mr;
2902 struct ocrdma_pd *pd = get_ocrdma_pd(ibpd);
2903 struct ocrdma_dev *dev = get_ocrdma_dev(ibpd->device);
2905 if (mr_type != IB_MR_TYPE_MEM_REG)
2906 return ERR_PTR(-EINVAL);
2908 if (max_num_sg > dev->attr.max_pages_per_frmr)
2909 return ERR_PTR(-EINVAL);
2911 mr = kzalloc(sizeof(*mr), GFP_KERNEL);
2913 return ERR_PTR(-ENOMEM);
2915 mr->pages = kcalloc(max_num_sg, sizeof(u64), GFP_KERNEL);
2921 status = ocrdma_get_pbl_info(dev, mr, max_num_sg);
2925 mr->hwmr.remote_rd = 0;
2926 mr->hwmr.remote_wr = 0;
2927 mr->hwmr.local_rd = 0;
2928 mr->hwmr.local_wr = 0;
2929 mr->hwmr.mw_bind = 0;
2930 status = ocrdma_build_pbl_tbl(dev, &mr->hwmr);
2933 status = ocrdma_reg_mr(dev, &mr->hwmr, pd->id, 0);
2936 mr->ibmr.rkey = mr->hwmr.lkey;
2937 mr->ibmr.lkey = mr->hwmr.lkey;
2938 dev->stag_arr[(mr->hwmr.lkey >> 8) & (OCRDMA_MAX_STAG - 1)] =
2942 ocrdma_free_mr_pbl_tbl(dev, &mr->hwmr);
2947 return ERR_PTR(-ENOMEM);
2950 static int ocrdma_set_page(struct ib_mr *ibmr, u64 addr)
2952 struct ocrdma_mr *mr = get_ocrdma_mr(ibmr);
2954 if (unlikely(mr->npages == mr->hwmr.num_pbes))
2957 mr->pages[mr->npages++] = addr;
2962 int ocrdma_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg, int sg_nents,
2963 unsigned int *sg_offset)
2965 struct ocrdma_mr *mr = get_ocrdma_mr(ibmr);
2969 return ib_sg_to_pages(ibmr, sg, sg_nents, sg_offset, ocrdma_set_page);