1 /* QLogic qedr NIC Driver
2 * Copyright (c) 2015-2016 QLogic Corporation
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and /or other materials
21 * provided with the distribution.
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32 #include <linux/module.h>
33 #include <rdma/ib_verbs.h>
34 #include <rdma/ib_addr.h>
35 #include <rdma/ib_user_verbs.h>
36 #include <linux/netdevice.h>
37 #include <linux/iommu.h>
38 #include <net/addrconf.h>
39 #include <linux/qed/qede_roce.h>
40 #include <linux/qed/qed_chain.h>
41 #include <linux/qed/qed_if.h>
44 #include <rdma/qedr-abi.h>
46 MODULE_DESCRIPTION("QLogic 40G/100G ROCE Driver");
47 MODULE_AUTHOR("QLogic Corporation");
48 MODULE_LICENSE("Dual BSD/GPL");
49 MODULE_VERSION(QEDR_MODULE_VERSION);
51 #define QEDR_WQ_MULTIPLIER_DFT (3)
53 void qedr_ib_dispatch_event(struct qedr_dev *dev, u8 port_num,
54 enum ib_event_type type)
58 ibev.device = &dev->ibdev;
59 ibev.element.port_num = port_num;
62 ib_dispatch_event(&ibev);
65 static enum rdma_link_layer qedr_link_layer(struct ib_device *device,
68 return IB_LINK_LAYER_ETHERNET;
71 static void qedr_get_dev_fw_str(struct ib_device *ibdev, char *str,
74 struct qedr_dev *qedr = get_qedr_dev(ibdev);
75 u32 fw_ver = (u32)qedr->attr.fw_ver;
77 snprintf(str, str_len, "%d. %d. %d. %d",
78 (fw_ver >> 24) & 0xFF, (fw_ver >> 16) & 0xFF,
79 (fw_ver >> 8) & 0xFF, fw_ver & 0xFF);
82 static struct net_device *qedr_get_netdev(struct ib_device *dev, u8 port_num)
84 struct qedr_dev *qdev;
86 qdev = get_qedr_dev(dev);
89 /* The HW vendor's device driver must guarantee
90 * that this function returns NULL before the net device reaches
91 * NETDEV_UNREGISTER_FINAL state.
96 static int qedr_register_device(struct qedr_dev *dev)
98 strlcpy(dev->ibdev.name, "qedr%d", IB_DEVICE_NAME_MAX);
100 dev->ibdev.node_guid = dev->attr.node_guid;
101 memcpy(dev->ibdev.node_desc, QEDR_NODE_DESC, sizeof(QEDR_NODE_DESC));
102 dev->ibdev.owner = THIS_MODULE;
103 dev->ibdev.uverbs_abi_ver = QEDR_ABI_VERSION;
105 dev->ibdev.uverbs_cmd_mask = QEDR_UVERBS(GET_CONTEXT) |
106 QEDR_UVERBS(QUERY_DEVICE) |
107 QEDR_UVERBS(QUERY_PORT) |
108 QEDR_UVERBS(ALLOC_PD) |
109 QEDR_UVERBS(DEALLOC_PD) |
110 QEDR_UVERBS(CREATE_COMP_CHANNEL) |
111 QEDR_UVERBS(CREATE_CQ) |
112 QEDR_UVERBS(RESIZE_CQ) |
113 QEDR_UVERBS(DESTROY_CQ) |
114 QEDR_UVERBS(REQ_NOTIFY_CQ) |
115 QEDR_UVERBS(CREATE_QP) |
116 QEDR_UVERBS(MODIFY_QP) |
117 QEDR_UVERBS(QUERY_QP) |
118 QEDR_UVERBS(DESTROY_QP) |
119 QEDR_UVERBS(REG_MR) |
120 QEDR_UVERBS(DEREG_MR) |
121 QEDR_UVERBS(POLL_CQ) |
122 QEDR_UVERBS(POST_SEND) |
123 QEDR_UVERBS(POST_RECV);
125 dev->ibdev.phys_port_cnt = 1;
126 dev->ibdev.num_comp_vectors = dev->num_cnq;
127 dev->ibdev.node_type = RDMA_NODE_IB_CA;
129 dev->ibdev.query_device = qedr_query_device;
130 dev->ibdev.query_port = qedr_query_port;
131 dev->ibdev.modify_port = qedr_modify_port;
133 dev->ibdev.query_gid = qedr_query_gid;
134 dev->ibdev.add_gid = qedr_add_gid;
135 dev->ibdev.del_gid = qedr_del_gid;
137 dev->ibdev.alloc_ucontext = qedr_alloc_ucontext;
138 dev->ibdev.dealloc_ucontext = qedr_dealloc_ucontext;
139 dev->ibdev.mmap = qedr_mmap;
141 dev->ibdev.alloc_pd = qedr_alloc_pd;
142 dev->ibdev.dealloc_pd = qedr_dealloc_pd;
144 dev->ibdev.create_cq = qedr_create_cq;
145 dev->ibdev.destroy_cq = qedr_destroy_cq;
146 dev->ibdev.resize_cq = qedr_resize_cq;
147 dev->ibdev.req_notify_cq = qedr_arm_cq;
149 dev->ibdev.create_qp = qedr_create_qp;
150 dev->ibdev.modify_qp = qedr_modify_qp;
151 dev->ibdev.query_qp = qedr_query_qp;
152 dev->ibdev.destroy_qp = qedr_destroy_qp;
154 dev->ibdev.query_pkey = qedr_query_pkey;
156 dev->ibdev.create_ah = qedr_create_ah;
157 dev->ibdev.destroy_ah = qedr_destroy_ah;
159 dev->ibdev.get_dma_mr = qedr_get_dma_mr;
160 dev->ibdev.dereg_mr = qedr_dereg_mr;
161 dev->ibdev.reg_user_mr = qedr_reg_user_mr;
162 dev->ibdev.alloc_mr = qedr_alloc_mr;
163 dev->ibdev.map_mr_sg = qedr_map_mr_sg;
165 dev->ibdev.poll_cq = qedr_poll_cq;
166 dev->ibdev.post_send = qedr_post_send;
167 dev->ibdev.post_recv = qedr_post_recv;
169 dev->ibdev.process_mad = qedr_process_mad;
170 dev->ibdev.get_port_immutable = qedr_port_immutable;
171 dev->ibdev.get_netdev = qedr_get_netdev;
173 dev->ibdev.dma_device = &dev->pdev->dev;
175 dev->ibdev.get_link_layer = qedr_link_layer;
176 dev->ibdev.get_dev_fw_str = qedr_get_dev_fw_str;
178 return ib_register_device(&dev->ibdev, NULL);
181 /* This function allocates fast-path status block memory */
182 static int qedr_alloc_mem_sb(struct qedr_dev *dev,
183 struct qed_sb_info *sb_info, u16 sb_id)
185 struct status_block *sb_virt;
189 sb_virt = dma_alloc_coherent(&dev->pdev->dev,
190 sizeof(*sb_virt), &sb_phys, GFP_KERNEL);
194 rc = dev->ops->common->sb_init(dev->cdev, sb_info,
195 sb_virt, sb_phys, sb_id,
198 pr_err("Status block initialization failed\n");
199 dma_free_coherent(&dev->pdev->dev, sizeof(*sb_virt),
207 static void qedr_free_mem_sb(struct qedr_dev *dev,
208 struct qed_sb_info *sb_info, int sb_id)
210 if (sb_info->sb_virt) {
211 dev->ops->common->sb_release(dev->cdev, sb_info, sb_id);
212 dma_free_coherent(&dev->pdev->dev, sizeof(*sb_info->sb_virt),
213 (void *)sb_info->sb_virt, sb_info->sb_phys);
217 static void qedr_free_resources(struct qedr_dev *dev)
221 for (i = 0; i < dev->num_cnq; i++) {
222 qedr_free_mem_sb(dev, &dev->sb_array[i], dev->sb_start + i);
223 dev->ops->common->chain_free(dev->cdev, &dev->cnq_array[i].pbl);
226 kfree(dev->cnq_array);
227 kfree(dev->sb_array);
228 kfree(dev->sgid_tbl);
231 static int qedr_alloc_resources(struct qedr_dev *dev)
233 struct qedr_cnq *cnq;
238 dev->sgid_tbl = kzalloc(sizeof(union ib_gid) *
239 QEDR_MAX_SGID, GFP_KERNEL);
243 spin_lock_init(&dev->sgid_lock);
245 /* Allocate Status blocks for CNQ */
246 dev->sb_array = kcalloc(dev->num_cnq, sizeof(*dev->sb_array),
248 if (!dev->sb_array) {
253 dev->cnq_array = kcalloc(dev->num_cnq,
254 sizeof(*dev->cnq_array), GFP_KERNEL);
255 if (!dev->cnq_array) {
260 dev->sb_start = dev->ops->rdma_get_start_sb(dev->cdev);
262 /* Allocate CNQ PBLs */
263 n_entries = min_t(u32, QED_RDMA_MAX_CNQ_SIZE, QEDR_ROCE_MAX_CNQ_SIZE);
264 for (i = 0; i < dev->num_cnq; i++) {
265 cnq = &dev->cnq_array[i];
267 rc = qedr_alloc_mem_sb(dev, &dev->sb_array[i],
272 rc = dev->ops->common->chain_alloc(dev->cdev,
273 QED_CHAIN_USE_TO_CONSUME,
275 QED_CHAIN_CNT_TYPE_U16,
277 sizeof(struct regpair *),
283 cnq->sb = &dev->sb_array[i];
284 cons_pi = dev->sb_array[i].sb_virt->pi_array;
285 cnq->hw_cons_ptr = &cons_pi[QED_ROCE_PROTOCOL_INDEX];
287 sprintf(cnq->name, "qedr%d@pci:%s", i, pci_name(dev->pdev));
289 DP_DEBUG(dev, QEDR_MSG_INIT, "cnq[%d].cons=%d\n",
290 i, qed_chain_get_cons_idx(&cnq->pbl));
295 qedr_free_mem_sb(dev, &dev->sb_array[i], dev->sb_start + i);
297 for (--i; i >= 0; i--) {
298 dev->ops->common->chain_free(dev->cdev, &dev->cnq_array[i].pbl);
299 qedr_free_mem_sb(dev, &dev->sb_array[i], dev->sb_start + i);
301 kfree(dev->cnq_array);
303 kfree(dev->sb_array);
305 kfree(dev->sgid_tbl);
309 /* QEDR sysfs interface */
310 static ssize_t show_rev(struct device *device, struct device_attribute *attr,
313 struct qedr_dev *dev = dev_get_drvdata(device);
315 return scnprintf(buf, PAGE_SIZE, "0x%x\n", dev->pdev->vendor);
318 static ssize_t show_hca_type(struct device *device,
319 struct device_attribute *attr, char *buf)
321 return scnprintf(buf, PAGE_SIZE, "%s\n", "HCA_TYPE_TO_SET");
324 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
325 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca_type, NULL);
327 static struct device_attribute *qedr_attributes[] = {
332 static void qedr_remove_sysfiles(struct qedr_dev *dev)
336 for (i = 0; i < ARRAY_SIZE(qedr_attributes); i++)
337 device_remove_file(&dev->ibdev.dev, qedr_attributes[i]);
340 static void qedr_pci_set_atomic(struct qedr_dev *dev, struct pci_dev *pdev)
342 struct pci_dev *bridge;
345 dev->atomic_cap = IB_ATOMIC_NONE;
347 bridge = pdev->bus->self;
351 /* Check whether we are connected directly or via a switch */
352 while (bridge && bridge->bus->parent) {
353 DP_DEBUG(dev, QEDR_MSG_INIT,
354 "Device is not connected directly to root. bridge->bus->number=%d primary=%d\n",
355 bridge->bus->number, bridge->bus->primary);
356 /* Need to check Atomic Op Routing Supported all the way to
359 pcie_capability_read_dword(bridge, PCI_EXP_DEVCAP2, &val);
360 if (!(val & PCI_EXP_DEVCAP2_ATOMIC_ROUTE)) {
361 pcie_capability_clear_word(pdev,
363 PCI_EXP_DEVCTL2_ATOMIC_REQ);
366 bridge = bridge->bus->parent->self;
368 bridge = pdev->bus->self;
370 /* according to bridge capability */
371 pcie_capability_read_dword(bridge, PCI_EXP_DEVCAP2, &val);
372 if (val & PCI_EXP_DEVCAP2_ATOMIC_COMP64) {
373 pcie_capability_set_word(pdev, PCI_EXP_DEVCTL2,
374 PCI_EXP_DEVCTL2_ATOMIC_REQ);
375 dev->atomic_cap = IB_ATOMIC_GLOB;
377 pcie_capability_clear_word(pdev, PCI_EXP_DEVCTL2,
378 PCI_EXP_DEVCTL2_ATOMIC_REQ);
382 static const struct qed_rdma_ops *qed_ops;
384 #define HILO_U64(hi, lo) ((((u64)(hi)) << 32) + (lo))
386 static irqreturn_t qedr_irq_handler(int irq, void *handle)
388 u16 hw_comp_cons, sw_comp_cons;
389 struct qedr_cnq *cnq = handle;
390 struct regpair *cq_handle;
393 qed_sb_ack(cnq->sb, IGU_INT_DISABLE, 0);
395 qed_sb_update_sb_idx(cnq->sb);
397 hw_comp_cons = le16_to_cpu(*cnq->hw_cons_ptr);
398 sw_comp_cons = qed_chain_get_cons_idx(&cnq->pbl);
400 /* Align protocol-index and chain reads */
403 while (sw_comp_cons != hw_comp_cons) {
404 cq_handle = (struct regpair *)qed_chain_consume(&cnq->pbl);
405 cq = (struct qedr_cq *)(uintptr_t)HILO_U64(cq_handle->hi,
410 "Received NULL CQ cq_handle->hi=%d cq_handle->lo=%d sw_comp_cons=%d hw_comp_cons=%d\n",
411 cq_handle->hi, cq_handle->lo, sw_comp_cons,
417 if (cq->sig != QEDR_CQ_MAGIC_NUMBER) {
419 "Problem with cq signature, cq_handle->hi=%d ch_handle->lo=%d cq=%p\n",
420 cq_handle->hi, cq_handle->lo, cq);
426 if (cq->ibcq.comp_handler)
427 (*cq->ibcq.comp_handler)
428 (&cq->ibcq, cq->ibcq.cq_context);
430 sw_comp_cons = qed_chain_get_cons_idx(&cnq->pbl);
436 qed_ops->rdma_cnq_prod_update(cnq->dev->rdma_ctx, cnq->index,
439 qed_sb_ack(cnq->sb, IGU_INT_ENABLE, 1);
444 static void qedr_sync_free_irqs(struct qedr_dev *dev)
449 for (i = 0; i < dev->int_info.used_cnt; i++) {
450 if (dev->int_info.msix_cnt) {
451 vector = dev->int_info.msix[i * dev->num_hwfns].vector;
452 synchronize_irq(vector);
453 free_irq(vector, &dev->cnq_array[i]);
457 dev->int_info.used_cnt = 0;
460 static int qedr_req_msix_irqs(struct qedr_dev *dev)
464 if (dev->num_cnq > dev->int_info.msix_cnt) {
466 "Interrupt mismatch: %d CNQ queues > %d MSI-x vectors\n",
467 dev->num_cnq, dev->int_info.msix_cnt);
471 for (i = 0; i < dev->num_cnq; i++) {
472 rc = request_irq(dev->int_info.msix[i * dev->num_hwfns].vector,
473 qedr_irq_handler, 0, dev->cnq_array[i].name,
476 DP_ERR(dev, "Request cnq %d irq failed\n", i);
477 qedr_sync_free_irqs(dev);
479 DP_DEBUG(dev, QEDR_MSG_INIT,
480 "Requested cnq irq for %s [entry %d]. Cookie is at %p\n",
481 dev->cnq_array[i].name, i,
483 dev->int_info.used_cnt++;
490 static int qedr_setup_irqs(struct qedr_dev *dev)
494 DP_DEBUG(dev, QEDR_MSG_INIT, "qedr_setup_irqs\n");
496 /* Learn Interrupt configuration */
497 rc = dev->ops->rdma_set_rdma_int(dev->cdev, dev->num_cnq);
501 rc = dev->ops->rdma_get_rdma_int(dev->cdev, &dev->int_info);
503 DP_DEBUG(dev, QEDR_MSG_INIT, "get_rdma_int failed\n");
507 if (dev->int_info.msix_cnt) {
508 DP_DEBUG(dev, QEDR_MSG_INIT, "rdma msix_cnt = %d\n",
509 dev->int_info.msix_cnt);
510 rc = qedr_req_msix_irqs(dev);
515 DP_DEBUG(dev, QEDR_MSG_INIT, "qedr_setup_irqs succeeded\n");
520 static int qedr_set_device_attr(struct qedr_dev *dev)
522 struct qed_rdma_device *qed_attr;
523 struct qedr_device_attr *attr;
526 /* Part 1 - query core capabilities */
527 qed_attr = dev->ops->rdma_query_device(dev->rdma_ctx);
529 /* Part 2 - check capabilities */
530 page_size = ~dev->attr.page_size_caps + 1;
531 if (page_size > PAGE_SIZE) {
533 "Kernel PAGE_SIZE is %ld which is smaller than minimum page size (%d) required by qedr\n",
534 PAGE_SIZE, page_size);
538 /* Part 3 - copy and update capabilities */
540 attr->vendor_id = qed_attr->vendor_id;
541 attr->vendor_part_id = qed_attr->vendor_part_id;
542 attr->hw_ver = qed_attr->hw_ver;
543 attr->fw_ver = qed_attr->fw_ver;
544 attr->node_guid = qed_attr->node_guid;
545 attr->sys_image_guid = qed_attr->sys_image_guid;
546 attr->max_cnq = qed_attr->max_cnq;
547 attr->max_sge = qed_attr->max_sge;
548 attr->max_inline = qed_attr->max_inline;
549 attr->max_sqe = min_t(u32, qed_attr->max_wqe, QEDR_MAX_SQE);
550 attr->max_rqe = min_t(u32, qed_attr->max_wqe, QEDR_MAX_RQE);
551 attr->max_qp_resp_rd_atomic_resc = qed_attr->max_qp_resp_rd_atomic_resc;
552 attr->max_qp_req_rd_atomic_resc = qed_attr->max_qp_req_rd_atomic_resc;
553 attr->max_dev_resp_rd_atomic_resc =
554 qed_attr->max_dev_resp_rd_atomic_resc;
555 attr->max_cq = qed_attr->max_cq;
556 attr->max_qp = qed_attr->max_qp;
557 attr->max_mr = qed_attr->max_mr;
558 attr->max_mr_size = qed_attr->max_mr_size;
559 attr->max_cqe = min_t(u64, qed_attr->max_cqe, QEDR_MAX_CQES);
560 attr->max_mw = qed_attr->max_mw;
561 attr->max_fmr = qed_attr->max_fmr;
562 attr->max_mr_mw_fmr_pbl = qed_attr->max_mr_mw_fmr_pbl;
563 attr->max_mr_mw_fmr_size = qed_attr->max_mr_mw_fmr_size;
564 attr->max_pd = qed_attr->max_pd;
565 attr->max_ah = qed_attr->max_ah;
566 attr->max_pkey = qed_attr->max_pkey;
567 attr->max_srq = qed_attr->max_srq;
568 attr->max_srq_wr = qed_attr->max_srq_wr;
569 attr->dev_caps = qed_attr->dev_caps;
570 attr->page_size_caps = qed_attr->page_size_caps;
571 attr->dev_ack_delay = qed_attr->dev_ack_delay;
572 attr->reserved_lkey = qed_attr->reserved_lkey;
573 attr->bad_pkey_counter = qed_attr->bad_pkey_counter;
574 attr->max_stats_queues = qed_attr->max_stats_queues;
579 void qedr_unaffiliated_event(void *context,
582 pr_err("unaffiliated event not implemented yet\n");
585 void qedr_affiliated_event(void *context, u8 e_code, void *fw_handle)
587 #define EVENT_TYPE_NOT_DEFINED 0
588 #define EVENT_TYPE_CQ 1
589 #define EVENT_TYPE_QP 2
590 struct qedr_dev *dev = (struct qedr_dev *)context;
591 union event_ring_data *data = fw_handle;
592 u64 roce_handle64 = ((u64)data->roce_handle.hi << 32) +
593 data->roce_handle.lo;
594 u8 event_type = EVENT_TYPE_NOT_DEFINED;
595 struct ib_event event;
602 case ROCE_ASYNC_EVENT_CQ_OVERFLOW_ERR:
603 event.event = IB_EVENT_CQ_ERR;
604 event_type = EVENT_TYPE_CQ;
606 case ROCE_ASYNC_EVENT_SQ_DRAINED:
607 event.event = IB_EVENT_SQ_DRAINED;
608 event_type = EVENT_TYPE_QP;
610 case ROCE_ASYNC_EVENT_QP_CATASTROPHIC_ERR:
611 event.event = IB_EVENT_QP_FATAL;
612 event_type = EVENT_TYPE_QP;
614 case ROCE_ASYNC_EVENT_LOCAL_INVALID_REQUEST_ERR:
615 event.event = IB_EVENT_QP_REQ_ERR;
616 event_type = EVENT_TYPE_QP;
618 case ROCE_ASYNC_EVENT_LOCAL_ACCESS_ERR:
619 event.event = IB_EVENT_QP_ACCESS_ERR;
620 event_type = EVENT_TYPE_QP;
623 DP_ERR(dev, "unsupported event %d on handle=%llx\n", e_code,
627 switch (event_type) {
629 cq = (struct qedr_cq *)(uintptr_t)roce_handle64;
632 if (ibcq->event_handler) {
633 event.device = ibcq->device;
634 event.element.cq = ibcq;
635 ibcq->event_handler(&event, ibcq->cq_context);
639 "Error: CQ event with NULL pointer ibcq. Handle=%llx\n",
642 DP_ERR(dev, "CQ event %d on hanlde %p\n", e_code, cq);
645 qp = (struct qedr_qp *)(uintptr_t)roce_handle64;
648 if (ibqp->event_handler) {
649 event.device = ibqp->device;
650 event.element.qp = ibqp;
651 ibqp->event_handler(&event, ibqp->qp_context);
655 "Error: QP event with NULL pointer ibqp. Handle=%llx\n",
658 DP_ERR(dev, "QP event %d on hanlde %p\n", e_code, qp);
665 static int qedr_init_hw(struct qedr_dev *dev)
667 struct qed_rdma_add_user_out_params out_params;
668 struct qed_rdma_start_in_params *in_params;
669 struct qed_rdma_cnq_params *cur_pbl;
670 struct qed_rdma_events events;
671 dma_addr_t p_phys_table;
676 in_params = kzalloc(sizeof(*in_params), GFP_KERNEL);
682 in_params->desired_cnq = dev->num_cnq;
683 for (i = 0; i < dev->num_cnq; i++) {
684 cur_pbl = &in_params->cnq_pbl_list[i];
686 page_cnt = qed_chain_get_page_cnt(&dev->cnq_array[i].pbl);
687 cur_pbl->num_pbl_pages = page_cnt;
689 p_phys_table = qed_chain_get_pbl_phys(&dev->cnq_array[i].pbl);
690 cur_pbl->pbl_ptr = (u64)p_phys_table;
693 events.affiliated_event = qedr_affiliated_event;
694 events.unaffiliated_event = qedr_unaffiliated_event;
695 events.context = dev;
697 in_params->events = &events;
698 in_params->cq_mode = QED_RDMA_CQ_MODE_32_BITS;
699 in_params->max_mtu = dev->ndev->mtu;
700 ether_addr_copy(&in_params->mac_addr[0], dev->ndev->dev_addr);
702 rc = dev->ops->rdma_init(dev->cdev, in_params);
706 rc = dev->ops->rdma_add_user(dev->rdma_ctx, &out_params);
710 dev->db_addr = (void *)(uintptr_t)out_params.dpi_addr;
711 dev->db_phys_addr = out_params.dpi_phys_addr;
712 dev->db_size = out_params.dpi_size;
713 dev->dpi = out_params.dpi;
715 rc = qedr_set_device_attr(dev);
719 DP_ERR(dev, "Init HW Failed rc = %d\n", rc);
724 void qedr_stop_hw(struct qedr_dev *dev)
726 dev->ops->rdma_remove_user(dev->rdma_ctx, dev->dpi);
727 dev->ops->rdma_stop(dev->rdma_ctx);
730 static struct qedr_dev *qedr_add(struct qed_dev *cdev, struct pci_dev *pdev,
731 struct net_device *ndev)
733 struct qed_dev_rdma_info dev_info;
734 struct qedr_dev *dev;
737 dev = (struct qedr_dev *)ib_alloc_device(sizeof(*dev));
739 pr_err("Unable to allocate ib device\n");
743 DP_DEBUG(dev, QEDR_MSG_INIT, "qedr add device called\n");
749 qed_ops = qed_get_rdma_ops();
751 DP_ERR(dev, "Failed to get qed roce operations\n");
756 rc = qed_ops->fill_dev_info(cdev, &dev_info);
760 dev->num_hwfns = dev_info.common.num_hwfns;
761 dev->rdma_ctx = dev->ops->rdma_get_rdma_ctx(cdev);
763 dev->num_cnq = dev->ops->rdma_get_min_cnq_msix(cdev);
765 DP_ERR(dev, "not enough CNQ resources.\n");
769 dev->wq_multiplier = QEDR_WQ_MULTIPLIER_DFT;
771 qedr_pci_set_atomic(dev, pdev);
773 rc = qedr_alloc_resources(dev);
777 rc = qedr_init_hw(dev);
781 rc = qedr_setup_irqs(dev);
785 rc = qedr_register_device(dev);
787 DP_ERR(dev, "Unable to allocate register device\n");
791 for (i = 0; i < ARRAY_SIZE(qedr_attributes); i++)
792 if (device_create_file(&dev->ibdev.dev, qedr_attributes[i]))
795 DP_DEBUG(dev, QEDR_MSG_INIT, "qedr driver loaded successfully\n");
799 ib_unregister_device(&dev->ibdev);
801 qedr_sync_free_irqs(dev);
805 qedr_free_resources(dev);
807 ib_dealloc_device(&dev->ibdev);
808 DP_ERR(dev, "qedr driver load failed rc=%d\n", rc);
813 static void qedr_remove(struct qedr_dev *dev)
815 /* First unregister with stack to stop all the active traffic
816 * of the registered clients.
818 qedr_remove_sysfiles(dev);
819 ib_unregister_device(&dev->ibdev);
822 qedr_sync_free_irqs(dev);
823 qedr_free_resources(dev);
824 ib_dealloc_device(&dev->ibdev);
827 static int qedr_close(struct qedr_dev *dev)
829 qedr_ib_dispatch_event(dev, 1, IB_EVENT_PORT_ERR);
834 static void qedr_shutdown(struct qedr_dev *dev)
840 static void qedr_mac_address_change(struct qedr_dev *dev)
842 union ib_gid *sgid = &dev->sgid_tbl[0];
843 u8 guid[8], mac_addr[6];
847 ether_addr_copy(&mac_addr[0], dev->ndev->dev_addr);
848 guid[0] = mac_addr[0] ^ 2;
849 guid[1] = mac_addr[1];
850 guid[2] = mac_addr[2];
853 guid[5] = mac_addr[3];
854 guid[6] = mac_addr[4];
855 guid[7] = mac_addr[5];
856 sgid->global.subnet_prefix = cpu_to_be64(0xfe80000000000000LL);
857 memcpy(&sgid->raw[8], guid, sizeof(guid));
860 rc = dev->ops->roce_ll2_set_mac_filter(dev->cdev,
861 dev->gsi_ll2_mac_address,
862 dev->ndev->dev_addr);
864 ether_addr_copy(dev->gsi_ll2_mac_address, dev->ndev->dev_addr);
866 qedr_ib_dispatch_event(dev, 1, IB_EVENT_GID_CHANGE);
869 DP_ERR(dev, "Error updating mac filter\n");
872 /* event handling via NIC driver ensures that all the NIC specific
873 * initialization done before RoCE driver notifies
876 static void qedr_notify(struct qedr_dev *dev, enum qede_roce_event event)
880 qedr_ib_dispatch_event(dev, 1, IB_EVENT_PORT_ACTIVE);
888 case QEDE_CHANGE_ADDR:
889 qedr_mac_address_change(dev);
892 pr_err("Event not supported\n");
896 static struct qedr_driver qedr_drv = {
897 .name = "qedr_driver",
899 .remove = qedr_remove,
900 .notify = qedr_notify,
903 static int __init qedr_init_module(void)
905 return qede_roce_register_driver(&qedr_drv);
908 static void __exit qedr_exit_module(void)
910 qede_roce_unregister_driver(&qedr_drv);
913 module_init(qedr_init_module);
914 module_exit(qedr_exit_module);