2 * Copyright (c) 2013-2015, Mellanox Technologies. All rights reserved.
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
33 #include <linux/highmem.h>
34 #include <linux/module.h>
35 #include <linux/init.h>
36 #include <linux/errno.h>
37 #include <linux/pci.h>
38 #include <linux/dma-mapping.h>
39 #include <linux/slab.h>
40 #include <linux/io-mapping.h>
41 #include <linux/interrupt.h>
42 #include <linux/delay.h>
43 #include <linux/mlx5/driver.h>
44 #include <linux/mlx5/cq.h>
45 #include <linux/mlx5/qp.h>
46 #include <linux/mlx5/srq.h>
47 #include <linux/debugfs.h>
48 #include <linux/kmod.h>
49 #include <linux/mlx5/mlx5_ifc.h>
50 #ifdef CONFIG_RFS_ACCEL
51 #include <linux/cpu_rmap.h>
53 #include <net/devlink.h>
54 #include "mlx5_core.h"
56 #ifdef CONFIG_MLX5_CORE_EN
60 MODULE_AUTHOR("Eli Cohen <eli@mellanox.com>");
61 MODULE_DESCRIPTION("Mellanox Connect-IB, ConnectX-4 core driver");
62 MODULE_LICENSE("Dual BSD/GPL");
63 MODULE_VERSION(DRIVER_VERSION);
65 unsigned int mlx5_core_debug_mask;
66 module_param_named(debug_mask, mlx5_core_debug_mask, uint, 0644);
67 MODULE_PARM_DESC(debug_mask, "debug mask: 1 = dump cmd data, 2 = dump cmd exec time, 3 = both. Default=0");
69 #define MLX5_DEFAULT_PROF 2
70 static unsigned int prof_sel = MLX5_DEFAULT_PROF;
71 module_param_named(prof_sel, prof_sel, uint, 0444);
72 MODULE_PARM_DESC(prof_sel, "profile selector. Valid range 0 - 2");
75 MLX5_ATOMIC_REQ_MODE_BE = 0x0,
76 MLX5_ATOMIC_REQ_MODE_HOST_ENDIANNESS = 0x1,
79 static struct mlx5_profile profile[] = {
84 .mask = MLX5_PROF_MASK_QP_SIZE,
88 .mask = MLX5_PROF_MASK_QP_SIZE |
89 MLX5_PROF_MASK_MR_CACHE,
178 #define FW_INIT_TIMEOUT_MILI 2000
179 #define FW_INIT_WAIT_MS 2
181 static int wait_fw_init(struct mlx5_core_dev *dev, u32 max_wait_mili)
183 unsigned long end = jiffies + msecs_to_jiffies(max_wait_mili);
186 while (fw_initializing(dev)) {
187 if (time_after(jiffies, end)) {
191 msleep(FW_INIT_WAIT_MS);
197 static void mlx5_set_driver_version(struct mlx5_core_dev *dev)
199 int driver_ver_sz = MLX5_FLD_SZ_BYTES(set_driver_version_in,
201 u8 in[MLX5_ST_SZ_BYTES(set_driver_version_in)] = {0};
202 u8 out[MLX5_ST_SZ_BYTES(set_driver_version_out)] = {0};
203 int remaining_size = driver_ver_sz;
206 if (!MLX5_CAP_GEN(dev, driver_version))
209 string = MLX5_ADDR_OF(set_driver_version_in, in, driver_version);
211 strncpy(string, "Linux", remaining_size);
213 remaining_size = max_t(int, 0, driver_ver_sz - strlen(string));
214 strncat(string, ",", remaining_size);
216 remaining_size = max_t(int, 0, driver_ver_sz - strlen(string));
217 strncat(string, DRIVER_NAME, remaining_size);
219 remaining_size = max_t(int, 0, driver_ver_sz - strlen(string));
220 strncat(string, ",", remaining_size);
222 remaining_size = max_t(int, 0, driver_ver_sz - strlen(string));
223 strncat(string, DRIVER_VERSION, remaining_size);
226 MLX5_SET(set_driver_version_in, in, opcode,
227 MLX5_CMD_OP_SET_DRIVER_VERSION);
229 mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
232 static int set_dma_caps(struct pci_dev *pdev)
236 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
238 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit PCI DMA mask\n");
239 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
241 dev_err(&pdev->dev, "Can't set PCI DMA mask, aborting\n");
246 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
249 "Warning: couldn't set 64-bit consistent PCI DMA mask\n");
250 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
253 "Can't set consistent PCI DMA mask, aborting\n");
258 dma_set_max_seg_size(&pdev->dev, 2u * 1024 * 1024 * 1024);
262 static int mlx5_pci_enable_device(struct mlx5_core_dev *dev)
264 struct pci_dev *pdev = dev->pdev;
267 mutex_lock(&dev->pci_status_mutex);
268 if (dev->pci_status == MLX5_PCI_STATUS_DISABLED) {
269 err = pci_enable_device(pdev);
271 dev->pci_status = MLX5_PCI_STATUS_ENABLED;
273 mutex_unlock(&dev->pci_status_mutex);
278 static void mlx5_pci_disable_device(struct mlx5_core_dev *dev)
280 struct pci_dev *pdev = dev->pdev;
282 mutex_lock(&dev->pci_status_mutex);
283 if (dev->pci_status == MLX5_PCI_STATUS_ENABLED) {
284 pci_disable_device(pdev);
285 dev->pci_status = MLX5_PCI_STATUS_DISABLED;
287 mutex_unlock(&dev->pci_status_mutex);
290 static int request_bar(struct pci_dev *pdev)
294 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
295 dev_err(&pdev->dev, "Missing registers BAR, aborting\n");
299 err = pci_request_regions(pdev, DRIVER_NAME);
301 dev_err(&pdev->dev, "Couldn't get PCI resources, aborting\n");
306 static void release_bar(struct pci_dev *pdev)
308 pci_release_regions(pdev);
311 static int mlx5_enable_msix(struct mlx5_core_dev *dev)
313 struct mlx5_priv *priv = &dev->priv;
314 struct mlx5_eq_table *table = &priv->eq_table;
315 int num_eqs = 1 << MLX5_CAP_GEN(dev, log_max_eq);
319 nvec = MLX5_CAP_GEN(dev, num_ports) * num_online_cpus() +
320 MLX5_EQ_VEC_COMP_BASE;
321 nvec = min_t(int, nvec, num_eqs);
322 if (nvec <= MLX5_EQ_VEC_COMP_BASE)
325 priv->msix_arr = kcalloc(nvec, sizeof(*priv->msix_arr), GFP_KERNEL);
327 priv->irq_info = kcalloc(nvec, sizeof(*priv->irq_info), GFP_KERNEL);
328 if (!priv->msix_arr || !priv->irq_info)
331 for (i = 0; i < nvec; i++)
332 priv->msix_arr[i].entry = i;
334 nvec = pci_enable_msix_range(dev->pdev, priv->msix_arr,
335 MLX5_EQ_VEC_COMP_BASE + 1, nvec);
339 table->num_comp_vectors = nvec - MLX5_EQ_VEC_COMP_BASE;
344 kfree(priv->irq_info);
345 kfree(priv->msix_arr);
349 static void mlx5_disable_msix(struct mlx5_core_dev *dev)
351 struct mlx5_priv *priv = &dev->priv;
353 pci_disable_msix(dev->pdev);
354 kfree(priv->irq_info);
355 kfree(priv->msix_arr);
358 struct mlx5_reg_host_endianess {
364 #define CAP_MASK(pos, size) ((u64)((1 << (size)) - 1) << (pos))
367 MLX5_CAP_BITS_RW_MASK = CAP_MASK(MLX5_CAP_OFF_CMDIF_CSUM, 2) |
368 MLX5_DEV_CAP_FLAG_DCT,
371 static u16 to_fw_pkey_sz(struct mlx5_core_dev *dev, u32 size)
387 mlx5_core_warn(dev, "invalid pkey table size %d\n", size);
392 static int mlx5_core_get_caps_mode(struct mlx5_core_dev *dev,
393 enum mlx5_cap_type cap_type,
394 enum mlx5_cap_mode cap_mode)
396 u8 in[MLX5_ST_SZ_BYTES(query_hca_cap_in)];
397 int out_sz = MLX5_ST_SZ_BYTES(query_hca_cap_out);
398 void *out, *hca_caps;
399 u16 opmod = (cap_type << 1) | (cap_mode & 0x01);
402 memset(in, 0, sizeof(in));
403 out = kzalloc(out_sz, GFP_KERNEL);
407 MLX5_SET(query_hca_cap_in, in, opcode, MLX5_CMD_OP_QUERY_HCA_CAP);
408 MLX5_SET(query_hca_cap_in, in, op_mod, opmod);
409 err = mlx5_cmd_exec(dev, in, sizeof(in), out, out_sz);
412 "QUERY_HCA_CAP : type(%x) opmode(%x) Failed(%d)\n",
413 cap_type, cap_mode, err);
417 hca_caps = MLX5_ADDR_OF(query_hca_cap_out, out, capability);
420 case HCA_CAP_OPMOD_GET_MAX:
421 memcpy(dev->caps.hca_max[cap_type], hca_caps,
422 MLX5_UN_SZ_BYTES(hca_cap_union));
424 case HCA_CAP_OPMOD_GET_CUR:
425 memcpy(dev->caps.hca_cur[cap_type], hca_caps,
426 MLX5_UN_SZ_BYTES(hca_cap_union));
430 "Tried to query dev cap type(%x) with wrong opmode(%x)\n",
440 int mlx5_core_get_caps(struct mlx5_core_dev *dev, enum mlx5_cap_type cap_type)
444 ret = mlx5_core_get_caps_mode(dev, cap_type, HCA_CAP_OPMOD_GET_CUR);
447 return mlx5_core_get_caps_mode(dev, cap_type, HCA_CAP_OPMOD_GET_MAX);
450 static int set_caps(struct mlx5_core_dev *dev, void *in, int in_sz, int opmod)
452 u32 out[MLX5_ST_SZ_DW(set_hca_cap_out)] = {0};
454 MLX5_SET(set_hca_cap_in, in, opcode, MLX5_CMD_OP_SET_HCA_CAP);
455 MLX5_SET(set_hca_cap_in, in, op_mod, opmod << 1);
456 return mlx5_cmd_exec(dev, in, in_sz, out, sizeof(out));
459 static int handle_hca_cap_atomic(struct mlx5_core_dev *dev)
463 int set_sz = MLX5_ST_SZ_BYTES(set_hca_cap_in);
467 if (MLX5_CAP_GEN(dev, atomic)) {
468 err = mlx5_core_get_caps(dev, MLX5_CAP_ATOMIC);
477 supported_atomic_req_8B_endianess_mode_1);
479 if (req_endianness != MLX5_ATOMIC_REQ_MODE_HOST_ENDIANNESS)
482 set_ctx = kzalloc(set_sz, GFP_KERNEL);
486 set_hca_cap = MLX5_ADDR_OF(set_hca_cap_in, set_ctx, capability);
488 /* Set requestor to host endianness */
489 MLX5_SET(atomic_caps, set_hca_cap, atomic_req_8B_endianess_mode,
490 MLX5_ATOMIC_REQ_MODE_HOST_ENDIANNESS);
492 err = set_caps(dev, set_ctx, set_sz, MLX5_SET_HCA_CAP_OP_MOD_ATOMIC);
498 static int handle_hca_cap(struct mlx5_core_dev *dev)
500 void *set_ctx = NULL;
501 struct mlx5_profile *prof = dev->profile;
503 int set_sz = MLX5_ST_SZ_BYTES(set_hca_cap_in);
506 set_ctx = kzalloc(set_sz, GFP_KERNEL);
510 err = mlx5_core_get_caps(dev, MLX5_CAP_GENERAL);
514 set_hca_cap = MLX5_ADDR_OF(set_hca_cap_in, set_ctx,
516 memcpy(set_hca_cap, dev->caps.hca_cur[MLX5_CAP_GENERAL],
517 MLX5_ST_SZ_BYTES(cmd_hca_cap));
519 mlx5_core_dbg(dev, "Current Pkey table size %d Setting new size %d\n",
520 mlx5_to_sw_pkey_sz(MLX5_CAP_GEN(dev, pkey_table_size)),
522 /* we limit the size of the pkey table to 128 entries for now */
523 MLX5_SET(cmd_hca_cap, set_hca_cap, pkey_table_size,
524 to_fw_pkey_sz(dev, 128));
526 /* Check log_max_qp from HCA caps to set in current profile */
527 if (MLX5_CAP_GEN_MAX(dev, log_max_qp) < profile[prof_sel].log_max_qp) {
528 mlx5_core_warn(dev, "log_max_qp value in current profile is %d, changing it to HCA capability limit (%d)\n",
529 profile[prof_sel].log_max_qp,
530 MLX5_CAP_GEN_MAX(dev, log_max_qp));
531 profile[prof_sel].log_max_qp = MLX5_CAP_GEN_MAX(dev, log_max_qp);
533 if (prof->mask & MLX5_PROF_MASK_QP_SIZE)
534 MLX5_SET(cmd_hca_cap, set_hca_cap, log_max_qp,
537 /* disable cmdif checksum */
538 MLX5_SET(cmd_hca_cap, set_hca_cap, cmdif_checksum, 0);
540 /* If the HCA supports 4K UARs use it */
541 if (MLX5_CAP_GEN_MAX(dev, uar_4k))
542 MLX5_SET(cmd_hca_cap, set_hca_cap, uar_4k, 1);
544 MLX5_SET(cmd_hca_cap, set_hca_cap, log_uar_page_sz, PAGE_SHIFT - 12);
546 if (MLX5_CAP_GEN_MAX(dev, cache_line_128byte))
547 MLX5_SET(cmd_hca_cap,
550 cache_line_size() == 128 ? 1 : 0);
552 err = set_caps(dev, set_ctx, set_sz,
553 MLX5_SET_HCA_CAP_OP_MOD_GENERAL_DEVICE);
560 static int set_hca_ctrl(struct mlx5_core_dev *dev)
562 struct mlx5_reg_host_endianess he_in;
563 struct mlx5_reg_host_endianess he_out;
566 if (!mlx5_core_is_pf(dev))
569 memset(&he_in, 0, sizeof(he_in));
570 he_in.he = MLX5_SET_HOST_ENDIANNESS;
571 err = mlx5_core_access_reg(dev, &he_in, sizeof(he_in),
572 &he_out, sizeof(he_out),
573 MLX5_REG_HOST_ENDIANNESS, 0, 1);
577 int mlx5_core_enable_hca(struct mlx5_core_dev *dev, u16 func_id)
579 u32 out[MLX5_ST_SZ_DW(enable_hca_out)] = {0};
580 u32 in[MLX5_ST_SZ_DW(enable_hca_in)] = {0};
582 MLX5_SET(enable_hca_in, in, opcode, MLX5_CMD_OP_ENABLE_HCA);
583 MLX5_SET(enable_hca_in, in, function_id, func_id);
584 return mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
587 int mlx5_core_disable_hca(struct mlx5_core_dev *dev, u16 func_id)
589 u32 out[MLX5_ST_SZ_DW(disable_hca_out)] = {0};
590 u32 in[MLX5_ST_SZ_DW(disable_hca_in)] = {0};
592 MLX5_SET(disable_hca_in, in, opcode, MLX5_CMD_OP_DISABLE_HCA);
593 MLX5_SET(disable_hca_in, in, function_id, func_id);
594 return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
597 u64 mlx5_read_internal_timer(struct mlx5_core_dev *dev)
599 u32 timer_h, timer_h1, timer_l;
601 timer_h = ioread32be(&dev->iseg->internal_timer_h);
602 timer_l = ioread32be(&dev->iseg->internal_timer_l);
603 timer_h1 = ioread32be(&dev->iseg->internal_timer_h);
604 if (timer_h != timer_h1) /* wrap around */
605 timer_l = ioread32be(&dev->iseg->internal_timer_l);
607 return (u64)timer_l | (u64)timer_h1 << 32;
610 static int mlx5_irq_set_affinity_hint(struct mlx5_core_dev *mdev, int i)
612 struct mlx5_priv *priv = &mdev->priv;
613 struct msix_entry *msix = priv->msix_arr;
614 int irq = msix[i + MLX5_EQ_VEC_COMP_BASE].vector;
617 if (!zalloc_cpumask_var(&priv->irq_info[i].mask, GFP_KERNEL)) {
618 mlx5_core_warn(mdev, "zalloc_cpumask_var failed");
622 cpumask_set_cpu(cpumask_local_spread(i, priv->numa_node),
623 priv->irq_info[i].mask);
625 err = irq_set_affinity_hint(irq, priv->irq_info[i].mask);
627 mlx5_core_warn(mdev, "irq_set_affinity_hint failed,irq 0x%.4x",
635 free_cpumask_var(priv->irq_info[i].mask);
639 static void mlx5_irq_clear_affinity_hint(struct mlx5_core_dev *mdev, int i)
641 struct mlx5_priv *priv = &mdev->priv;
642 struct msix_entry *msix = priv->msix_arr;
643 int irq = msix[i + MLX5_EQ_VEC_COMP_BASE].vector;
645 irq_set_affinity_hint(irq, NULL);
646 free_cpumask_var(priv->irq_info[i].mask);
649 static int mlx5_irq_set_affinity_hints(struct mlx5_core_dev *mdev)
654 for (i = 0; i < mdev->priv.eq_table.num_comp_vectors; i++) {
655 err = mlx5_irq_set_affinity_hint(mdev, i);
663 for (i--; i >= 0; i--)
664 mlx5_irq_clear_affinity_hint(mdev, i);
669 static void mlx5_irq_clear_affinity_hints(struct mlx5_core_dev *mdev)
673 for (i = 0; i < mdev->priv.eq_table.num_comp_vectors; i++)
674 mlx5_irq_clear_affinity_hint(mdev, i);
677 int mlx5_vector2eqn(struct mlx5_core_dev *dev, int vector, int *eqn,
680 struct mlx5_eq_table *table = &dev->priv.eq_table;
681 struct mlx5_eq *eq, *n;
684 spin_lock(&table->lock);
685 list_for_each_entry_safe(eq, n, &table->comp_eqs_list, list) {
686 if (eq->index == vector) {
693 spin_unlock(&table->lock);
697 EXPORT_SYMBOL(mlx5_vector2eqn);
699 struct mlx5_eq *mlx5_eqn2eq(struct mlx5_core_dev *dev, int eqn)
701 struct mlx5_eq_table *table = &dev->priv.eq_table;
704 spin_lock(&table->lock);
705 list_for_each_entry(eq, &table->comp_eqs_list, list)
706 if (eq->eqn == eqn) {
707 spin_unlock(&table->lock);
711 spin_unlock(&table->lock);
713 return ERR_PTR(-ENOENT);
716 static void free_comp_eqs(struct mlx5_core_dev *dev)
718 struct mlx5_eq_table *table = &dev->priv.eq_table;
719 struct mlx5_eq *eq, *n;
721 #ifdef CONFIG_RFS_ACCEL
723 free_irq_cpu_rmap(dev->rmap);
727 spin_lock(&table->lock);
728 list_for_each_entry_safe(eq, n, &table->comp_eqs_list, list) {
730 spin_unlock(&table->lock);
731 if (mlx5_destroy_unmap_eq(dev, eq))
732 mlx5_core_warn(dev, "failed to destroy EQ 0x%x\n",
735 spin_lock(&table->lock);
737 spin_unlock(&table->lock);
740 static int alloc_comp_eqs(struct mlx5_core_dev *dev)
742 struct mlx5_eq_table *table = &dev->priv.eq_table;
743 char name[MLX5_MAX_IRQ_NAME];
750 INIT_LIST_HEAD(&table->comp_eqs_list);
751 ncomp_vec = table->num_comp_vectors;
752 nent = MLX5_COMP_EQ_SIZE;
753 #ifdef CONFIG_RFS_ACCEL
754 dev->rmap = alloc_irq_cpu_rmap(ncomp_vec);
758 for (i = 0; i < ncomp_vec; i++) {
759 eq = kzalloc(sizeof(*eq), GFP_KERNEL);
765 #ifdef CONFIG_RFS_ACCEL
766 irq_cpu_rmap_add(dev->rmap,
767 dev->priv.msix_arr[i + MLX5_EQ_VEC_COMP_BASE].vector);
769 snprintf(name, MLX5_MAX_IRQ_NAME, "mlx5_comp%d", i);
770 err = mlx5_create_map_eq(dev, eq,
771 i + MLX5_EQ_VEC_COMP_BASE, nent, 0,
772 name, MLX5_EQ_TYPE_COMP);
777 mlx5_core_dbg(dev, "allocated completion EQN %d\n", eq->eqn);
779 spin_lock(&table->lock);
780 list_add_tail(&eq->list, &table->comp_eqs_list);
781 spin_unlock(&table->lock);
791 static int mlx5_core_set_issi(struct mlx5_core_dev *dev)
793 u32 query_in[MLX5_ST_SZ_DW(query_issi_in)] = {0};
794 u32 query_out[MLX5_ST_SZ_DW(query_issi_out)] = {0};
798 MLX5_SET(query_issi_in, query_in, opcode, MLX5_CMD_OP_QUERY_ISSI);
799 err = mlx5_cmd_exec(dev, query_in, sizeof(query_in),
800 query_out, sizeof(query_out));
805 mlx5_cmd_mbox_status(query_out, &status, &syndrome);
806 if (!status || syndrome == MLX5_DRIVER_SYND) {
807 mlx5_core_err(dev, "Failed to query ISSI err(%d) status(%d) synd(%d)\n",
808 err, status, syndrome);
812 mlx5_core_warn(dev, "Query ISSI is not supported by FW, ISSI is 0\n");
817 sup_issi = MLX5_GET(query_issi_out, query_out, supported_issi_dw0);
819 if (sup_issi & (1 << 1)) {
820 u32 set_in[MLX5_ST_SZ_DW(set_issi_in)] = {0};
821 u32 set_out[MLX5_ST_SZ_DW(set_issi_out)] = {0};
823 MLX5_SET(set_issi_in, set_in, opcode, MLX5_CMD_OP_SET_ISSI);
824 MLX5_SET(set_issi_in, set_in, current_issi, 1);
825 err = mlx5_cmd_exec(dev, set_in, sizeof(set_in),
826 set_out, sizeof(set_out));
828 mlx5_core_err(dev, "Failed to set ISSI to 1 err(%d)\n",
836 } else if (sup_issi & (1 << 0) || !sup_issi) {
844 static int mlx5_pci_init(struct mlx5_core_dev *dev, struct mlx5_priv *priv)
846 struct pci_dev *pdev = dev->pdev;
849 pci_set_drvdata(dev->pdev, dev);
850 strncpy(priv->name, dev_name(&pdev->dev), MLX5_MAX_NAME_LEN);
851 priv->name[MLX5_MAX_NAME_LEN - 1] = 0;
853 mutex_init(&priv->pgdir_mutex);
854 INIT_LIST_HEAD(&priv->pgdir_list);
855 spin_lock_init(&priv->mkey_lock);
857 mutex_init(&priv->alloc_mutex);
859 priv->numa_node = dev_to_node(&dev->pdev->dev);
861 priv->dbg_root = debugfs_create_dir(dev_name(&pdev->dev), mlx5_debugfs_root);
865 err = mlx5_pci_enable_device(dev);
867 dev_err(&pdev->dev, "Cannot enable PCI device, aborting\n");
871 err = request_bar(pdev);
873 dev_err(&pdev->dev, "error requesting BARs, aborting\n");
877 pci_set_master(pdev);
879 err = set_dma_caps(pdev);
881 dev_err(&pdev->dev, "Failed setting DMA capabilities mask, aborting\n");
885 dev->iseg_base = pci_resource_start(dev->pdev, 0);
886 dev->iseg = ioremap(dev->iseg_base, sizeof(*dev->iseg));
889 dev_err(&pdev->dev, "Failed mapping initialization segment, aborting\n");
896 pci_clear_master(dev->pdev);
897 release_bar(dev->pdev);
899 mlx5_pci_disable_device(dev);
902 debugfs_remove(priv->dbg_root);
906 static void mlx5_pci_close(struct mlx5_core_dev *dev, struct mlx5_priv *priv)
909 pci_clear_master(dev->pdev);
910 release_bar(dev->pdev);
911 mlx5_pci_disable_device(dev);
912 debugfs_remove(priv->dbg_root);
915 static int mlx5_init_once(struct mlx5_core_dev *dev, struct mlx5_priv *priv)
917 struct pci_dev *pdev = dev->pdev;
920 err = mlx5_query_board_id(dev);
922 dev_err(&pdev->dev, "query board id failed\n");
926 err = mlx5_eq_init(dev);
928 dev_err(&pdev->dev, "failed to initialize eq\n");
932 err = mlx5_init_cq_table(dev);
934 dev_err(&pdev->dev, "failed to initialize cq table\n");
938 mlx5_init_qp_table(dev);
940 mlx5_init_srq_table(dev);
942 mlx5_init_mkey_table(dev);
944 err = mlx5_init_rl_table(dev);
946 dev_err(&pdev->dev, "Failed to init rate limiting\n");
947 goto err_tables_cleanup;
950 #ifdef CONFIG_MLX5_CORE_EN
951 err = mlx5_eswitch_init(dev);
953 dev_err(&pdev->dev, "Failed to init eswitch %d\n", err);
958 err = mlx5_sriov_init(dev);
960 dev_err(&pdev->dev, "Failed to init sriov %d\n", err);
961 goto err_eswitch_cleanup;
967 #ifdef CONFIG_MLX5_CORE_EN
968 mlx5_eswitch_cleanup(dev->priv.eswitch);
972 mlx5_cleanup_rl_table(dev);
975 mlx5_cleanup_mkey_table(dev);
976 mlx5_cleanup_srq_table(dev);
977 mlx5_cleanup_qp_table(dev);
978 mlx5_cleanup_cq_table(dev);
981 mlx5_eq_cleanup(dev);
987 static void mlx5_cleanup_once(struct mlx5_core_dev *dev)
989 mlx5_sriov_cleanup(dev);
990 #ifdef CONFIG_MLX5_CORE_EN
991 mlx5_eswitch_cleanup(dev->priv.eswitch);
993 mlx5_cleanup_rl_table(dev);
994 mlx5_cleanup_mkey_table(dev);
995 mlx5_cleanup_srq_table(dev);
996 mlx5_cleanup_qp_table(dev);
997 mlx5_cleanup_cq_table(dev);
998 mlx5_eq_cleanup(dev);
1001 static int mlx5_load_one(struct mlx5_core_dev *dev, struct mlx5_priv *priv,
1004 struct pci_dev *pdev = dev->pdev;
1007 mutex_lock(&dev->intf_state_mutex);
1008 if (test_bit(MLX5_INTERFACE_STATE_UP, &dev->intf_state)) {
1009 dev_warn(&dev->pdev->dev, "%s: interface is up, NOP\n",
1014 dev_info(&pdev->dev, "firmware version: %d.%d.%d\n", fw_rev_maj(dev),
1015 fw_rev_min(dev), fw_rev_sub(dev));
1017 /* on load removing any previous indication of internal error, device is
1020 dev->state = MLX5_DEVICE_STATE_UP;
1022 err = mlx5_cmd_init(dev);
1024 dev_err(&pdev->dev, "Failed initializing command interface, aborting\n");
1028 err = wait_fw_init(dev, FW_INIT_TIMEOUT_MILI);
1030 dev_err(&dev->pdev->dev, "Firmware over %d MS in initializing state, aborting\n",
1031 FW_INIT_TIMEOUT_MILI);
1032 goto err_cmd_cleanup;
1035 err = mlx5_core_enable_hca(dev, 0);
1037 dev_err(&pdev->dev, "enable hca failed\n");
1038 goto err_cmd_cleanup;
1041 err = mlx5_core_set_issi(dev);
1043 dev_err(&pdev->dev, "failed to set issi\n");
1044 goto err_disable_hca;
1047 err = mlx5_satisfy_startup_pages(dev, 1);
1049 dev_err(&pdev->dev, "failed to allocate boot pages\n");
1050 goto err_disable_hca;
1053 err = set_hca_ctrl(dev);
1055 dev_err(&pdev->dev, "set_hca_ctrl failed\n");
1056 goto reclaim_boot_pages;
1059 err = handle_hca_cap(dev);
1061 dev_err(&pdev->dev, "handle_hca_cap failed\n");
1062 goto reclaim_boot_pages;
1065 err = handle_hca_cap_atomic(dev);
1067 dev_err(&pdev->dev, "handle_hca_cap_atomic failed\n");
1068 goto reclaim_boot_pages;
1071 err = mlx5_satisfy_startup_pages(dev, 0);
1073 dev_err(&pdev->dev, "failed to allocate init pages\n");
1074 goto reclaim_boot_pages;
1077 err = mlx5_pagealloc_start(dev);
1079 dev_err(&pdev->dev, "mlx5_pagealloc_start failed\n");
1080 goto reclaim_boot_pages;
1083 err = mlx5_cmd_init_hca(dev);
1085 dev_err(&pdev->dev, "init hca failed\n");
1086 goto err_pagealloc_stop;
1089 mlx5_set_driver_version(dev);
1091 mlx5_start_health_poll(dev);
1093 err = mlx5_query_hca_caps(dev);
1095 dev_err(&pdev->dev, "query hca failed\n");
1099 if (boot && mlx5_init_once(dev, priv)) {
1100 dev_err(&pdev->dev, "sw objs init failed\n");
1104 err = mlx5_enable_msix(dev);
1106 dev_err(&pdev->dev, "enable msix failed\n");
1107 goto err_cleanup_once;
1110 dev->priv.uar = mlx5_get_uars_page(dev);
1111 if (!dev->priv.uar) {
1112 dev_err(&pdev->dev, "Failed allocating uar, aborting\n");
1113 goto err_disable_msix;
1116 err = mlx5_start_eqs(dev);
1118 dev_err(&pdev->dev, "Failed to start pages and async EQs\n");
1122 err = alloc_comp_eqs(dev);
1124 dev_err(&pdev->dev, "Failed to alloc completion EQs\n");
1128 err = mlx5_irq_set_affinity_hints(dev);
1130 dev_err(&pdev->dev, "Failed to alloc affinity hint cpumask\n");
1131 goto err_affinity_hints;
1134 err = mlx5_init_fs(dev);
1136 dev_err(&pdev->dev, "Failed to init flow steering\n");
1140 #ifdef CONFIG_MLX5_CORE_EN
1141 mlx5_eswitch_attach(dev->priv.eswitch);
1144 err = mlx5_sriov_attach(dev);
1146 dev_err(&pdev->dev, "sriov init failed %d\n", err);
1150 if (mlx5_device_registered(dev)) {
1151 mlx5_attach_device(dev);
1153 err = mlx5_register_device(dev);
1155 dev_err(&pdev->dev, "mlx5_register_device failed %d\n", err);
1160 clear_bit(MLX5_INTERFACE_STATE_DOWN, &dev->intf_state);
1161 set_bit(MLX5_INTERFACE_STATE_UP, &dev->intf_state);
1163 mutex_unlock(&dev->intf_state_mutex);
1168 mlx5_sriov_detach(dev);
1171 #ifdef CONFIG_MLX5_CORE_EN
1172 mlx5_eswitch_detach(dev->priv.eswitch);
1174 mlx5_cleanup_fs(dev);
1177 mlx5_irq_clear_affinity_hints(dev);
1186 mlx5_put_uars_page(dev, priv->uar);
1189 mlx5_disable_msix(dev);
1193 mlx5_cleanup_once(dev);
1196 mlx5_stop_health_poll(dev);
1197 if (mlx5_cmd_teardown_hca(dev)) {
1198 dev_err(&dev->pdev->dev, "tear_down_hca failed, skip cleanup\n");
1203 mlx5_pagealloc_stop(dev);
1206 mlx5_reclaim_startup_pages(dev);
1209 mlx5_core_disable_hca(dev, 0);
1212 mlx5_cmd_cleanup(dev);
1215 dev->state = MLX5_DEVICE_STATE_INTERNAL_ERROR;
1216 mutex_unlock(&dev->intf_state_mutex);
1221 static int mlx5_unload_one(struct mlx5_core_dev *dev, struct mlx5_priv *priv,
1227 mlx5_drain_health_wq(dev);
1229 mutex_lock(&dev->intf_state_mutex);
1230 if (test_bit(MLX5_INTERFACE_STATE_DOWN, &dev->intf_state)) {
1231 dev_warn(&dev->pdev->dev, "%s: interface is down, NOP\n",
1234 mlx5_cleanup_once(dev);
1238 if (mlx5_device_registered(dev))
1239 mlx5_detach_device(dev);
1241 mlx5_sriov_detach(dev);
1242 #ifdef CONFIG_MLX5_CORE_EN
1243 mlx5_eswitch_detach(dev->priv.eswitch);
1245 mlx5_cleanup_fs(dev);
1246 mlx5_irq_clear_affinity_hints(dev);
1249 mlx5_put_uars_page(dev, priv->uar);
1250 mlx5_disable_msix(dev);
1252 mlx5_cleanup_once(dev);
1253 mlx5_stop_health_poll(dev);
1254 err = mlx5_cmd_teardown_hca(dev);
1256 dev_err(&dev->pdev->dev, "tear_down_hca failed, skip cleanup\n");
1259 mlx5_pagealloc_stop(dev);
1260 mlx5_reclaim_startup_pages(dev);
1261 mlx5_core_disable_hca(dev, 0);
1262 mlx5_cmd_cleanup(dev);
1265 clear_bit(MLX5_INTERFACE_STATE_UP, &dev->intf_state);
1266 set_bit(MLX5_INTERFACE_STATE_DOWN, &dev->intf_state);
1267 mutex_unlock(&dev->intf_state_mutex);
1271 struct mlx5_core_event_handler {
1272 void (*event)(struct mlx5_core_dev *dev,
1273 enum mlx5_dev_event event,
1277 static const struct devlink_ops mlx5_devlink_ops = {
1278 #ifdef CONFIG_MLX5_CORE_EN
1279 .eswitch_mode_set = mlx5_devlink_eswitch_mode_set,
1280 .eswitch_mode_get = mlx5_devlink_eswitch_mode_get,
1281 .eswitch_inline_mode_set = mlx5_devlink_eswitch_inline_mode_set,
1282 .eswitch_inline_mode_get = mlx5_devlink_eswitch_inline_mode_get,
1283 .eswitch_encap_mode_set = mlx5_devlink_eswitch_encap_mode_set,
1284 .eswitch_encap_mode_get = mlx5_devlink_eswitch_encap_mode_get,
1288 #define MLX5_IB_MOD "mlx5_ib"
1289 static int init_one(struct pci_dev *pdev,
1290 const struct pci_device_id *id)
1292 struct mlx5_core_dev *dev;
1293 struct devlink *devlink;
1294 struct mlx5_priv *priv;
1297 devlink = devlink_alloc(&mlx5_devlink_ops, sizeof(*dev));
1299 dev_err(&pdev->dev, "kzalloc failed\n");
1303 dev = devlink_priv(devlink);
1305 priv->pci_dev_data = id->driver_data;
1307 pci_set_drvdata(pdev, dev);
1310 dev->event = mlx5_core_event;
1311 dev->profile = &profile[prof_sel];
1313 INIT_LIST_HEAD(&priv->ctx_list);
1314 spin_lock_init(&priv->ctx_lock);
1315 mutex_init(&dev->pci_status_mutex);
1316 mutex_init(&dev->intf_state_mutex);
1318 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
1319 err = init_srcu_struct(&priv->pfault_srcu);
1321 dev_err(&pdev->dev, "init_srcu_struct failed with error code %d\n",
1326 mutex_init(&priv->bfregs.reg_head.lock);
1327 mutex_init(&priv->bfregs.wc_head.lock);
1328 INIT_LIST_HEAD(&priv->bfregs.reg_head.list);
1329 INIT_LIST_HEAD(&priv->bfregs.wc_head.list);
1331 err = mlx5_pci_init(dev, priv);
1333 dev_err(&pdev->dev, "mlx5_pci_init failed with error code %d\n", err);
1337 err = mlx5_health_init(dev);
1339 dev_err(&pdev->dev, "mlx5_health_init failed with error code %d\n", err);
1343 mlx5_pagealloc_init(dev);
1345 err = mlx5_load_one(dev, priv, true);
1347 dev_err(&pdev->dev, "mlx5_load_one failed with error code %d\n", err);
1351 request_module_nowait(MLX5_IB_MOD);
1353 err = devlink_register(devlink, &pdev->dev);
1357 pci_save_state(pdev);
1361 mlx5_unload_one(dev, priv, true);
1363 mlx5_pagealloc_cleanup(dev);
1364 mlx5_health_cleanup(dev);
1366 mlx5_pci_close(dev, priv);
1368 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
1369 cleanup_srcu_struct(&priv->pfault_srcu);
1372 pci_set_drvdata(pdev, NULL);
1373 devlink_free(devlink);
1378 static void remove_one(struct pci_dev *pdev)
1380 struct mlx5_core_dev *dev = pci_get_drvdata(pdev);
1381 struct devlink *devlink = priv_to_devlink(dev);
1382 struct mlx5_priv *priv = &dev->priv;
1384 devlink_unregister(devlink);
1385 mlx5_unregister_device(dev);
1387 if (mlx5_unload_one(dev, priv, true)) {
1388 dev_err(&dev->pdev->dev, "mlx5_unload_one failed\n");
1389 mlx5_health_cleanup(dev);
1393 mlx5_pagealloc_cleanup(dev);
1394 mlx5_health_cleanup(dev);
1395 mlx5_pci_close(dev, priv);
1396 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
1397 cleanup_srcu_struct(&priv->pfault_srcu);
1399 pci_set_drvdata(pdev, NULL);
1400 devlink_free(devlink);
1403 static pci_ers_result_t mlx5_pci_err_detected(struct pci_dev *pdev,
1404 pci_channel_state_t state)
1406 struct mlx5_core_dev *dev = pci_get_drvdata(pdev);
1407 struct mlx5_priv *priv = &dev->priv;
1409 dev_info(&pdev->dev, "%s was called\n", __func__);
1411 mlx5_enter_error_state(dev);
1412 mlx5_unload_one(dev, priv, false);
1413 /* In case of kernel call drain the health wq */
1415 mlx5_drain_health_wq(dev);
1416 mlx5_pci_disable_device(dev);
1419 return state == pci_channel_io_perm_failure ?
1420 PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_NEED_RESET;
1423 /* wait for the device to show vital signs by waiting
1424 * for the health counter to start counting.
1426 static int wait_vital(struct pci_dev *pdev)
1428 struct mlx5_core_dev *dev = pci_get_drvdata(pdev);
1429 struct mlx5_core_health *health = &dev->priv.health;
1430 const int niter = 100;
1435 for (i = 0; i < niter; i++) {
1436 count = ioread32be(health->health_counter);
1437 if (count && count != 0xffffffff) {
1438 if (last_count && last_count != count) {
1439 dev_info(&pdev->dev, "Counter value 0x%x after %d iterations\n", count, i);
1450 static pci_ers_result_t mlx5_pci_slot_reset(struct pci_dev *pdev)
1452 struct mlx5_core_dev *dev = pci_get_drvdata(pdev);
1455 dev_info(&pdev->dev, "%s was called\n", __func__);
1457 err = mlx5_pci_enable_device(dev);
1459 dev_err(&pdev->dev, "%s: mlx5_pci_enable_device failed with error code: %d\n"
1461 return PCI_ERS_RESULT_DISCONNECT;
1464 pci_set_master(pdev);
1465 pci_restore_state(pdev);
1466 pci_save_state(pdev);
1468 if (wait_vital(pdev)) {
1469 dev_err(&pdev->dev, "%s: wait_vital timed out\n", __func__);
1470 return PCI_ERS_RESULT_DISCONNECT;
1473 return PCI_ERS_RESULT_RECOVERED;
1476 static void mlx5_pci_resume(struct pci_dev *pdev)
1478 struct mlx5_core_dev *dev = pci_get_drvdata(pdev);
1479 struct mlx5_priv *priv = &dev->priv;
1482 dev_info(&pdev->dev, "%s was called\n", __func__);
1484 err = mlx5_load_one(dev, priv, false);
1486 dev_err(&pdev->dev, "%s: mlx5_load_one failed with error code: %d\n"
1489 dev_info(&pdev->dev, "%s: device recovered\n", __func__);
1492 static const struct pci_error_handlers mlx5_err_handler = {
1493 .error_detected = mlx5_pci_err_detected,
1494 .slot_reset = mlx5_pci_slot_reset,
1495 .resume = mlx5_pci_resume
1498 static void shutdown(struct pci_dev *pdev)
1500 struct mlx5_core_dev *dev = pci_get_drvdata(pdev);
1501 struct mlx5_priv *priv = &dev->priv;
1503 dev_info(&pdev->dev, "Shutdown was called\n");
1504 /* Notify mlx5 clients that the kernel is being shut down */
1505 set_bit(MLX5_INTERFACE_STATE_SHUTDOWN, &dev->intf_state);
1506 mlx5_unload_one(dev, priv, false);
1507 mlx5_pci_disable_device(dev);
1510 static const struct pci_device_id mlx5_core_pci_table[] = {
1511 { PCI_VDEVICE(MELLANOX, 0x1011) }, /* Connect-IB */
1512 { PCI_VDEVICE(MELLANOX, 0x1012), MLX5_PCI_DEV_IS_VF}, /* Connect-IB VF */
1513 { PCI_VDEVICE(MELLANOX, 0x1013) }, /* ConnectX-4 */
1514 { PCI_VDEVICE(MELLANOX, 0x1014), MLX5_PCI_DEV_IS_VF}, /* ConnectX-4 VF */
1515 { PCI_VDEVICE(MELLANOX, 0x1015) }, /* ConnectX-4LX */
1516 { PCI_VDEVICE(MELLANOX, 0x1016), MLX5_PCI_DEV_IS_VF}, /* ConnectX-4LX VF */
1517 { PCI_VDEVICE(MELLANOX, 0x1017) }, /* ConnectX-5, PCIe 3.0 */
1518 { PCI_VDEVICE(MELLANOX, 0x1018), MLX5_PCI_DEV_IS_VF}, /* ConnectX-5 VF */
1519 { PCI_VDEVICE(MELLANOX, 0x1019) }, /* ConnectX-5 Ex */
1520 { PCI_VDEVICE(MELLANOX, 0x101a), MLX5_PCI_DEV_IS_VF}, /* ConnectX-5 Ex VF */
1521 { PCI_VDEVICE(MELLANOX, 0x101b) }, /* ConnectX-6 */
1522 { PCI_VDEVICE(MELLANOX, 0x101c), MLX5_PCI_DEV_IS_VF}, /* ConnectX-6 VF */
1526 MODULE_DEVICE_TABLE(pci, mlx5_core_pci_table);
1528 void mlx5_disable_device(struct mlx5_core_dev *dev)
1530 mlx5_pci_err_detected(dev->pdev, 0);
1533 void mlx5_recover_device(struct mlx5_core_dev *dev)
1535 mlx5_pci_disable_device(dev);
1536 if (mlx5_pci_slot_reset(dev->pdev) == PCI_ERS_RESULT_RECOVERED)
1537 mlx5_pci_resume(dev->pdev);
1540 static struct pci_driver mlx5_core_driver = {
1541 .name = DRIVER_NAME,
1542 .id_table = mlx5_core_pci_table,
1544 .remove = remove_one,
1545 .shutdown = shutdown,
1546 .err_handler = &mlx5_err_handler,
1547 .sriov_configure = mlx5_core_sriov_configure,
1550 static void mlx5_core_verify_params(void)
1552 if (prof_sel >= ARRAY_SIZE(profile)) {
1553 pr_warn("mlx5_core: WARNING: Invalid module parameter prof_sel %d, valid range 0-%zu, changing back to default(%d)\n",
1555 ARRAY_SIZE(profile) - 1,
1557 prof_sel = MLX5_DEFAULT_PROF;
1561 static int __init init(void)
1565 mlx5_core_verify_params();
1566 mlx5_register_debugfs();
1568 err = pci_register_driver(&mlx5_core_driver);
1572 #ifdef CONFIG_MLX5_CORE_EN
1579 mlx5_unregister_debugfs();
1583 static void __exit cleanup(void)
1585 #ifdef CONFIG_MLX5_CORE_EN
1588 pci_unregister_driver(&mlx5_core_driver);
1589 mlx5_unregister_debugfs();
1593 module_exit(cleanup);