/* * Copyright (c) 2013-2015, Mellanox Technologies. All rights reserved. * * This software is available to you under a choice of one of two * licenses. You may choose to be licensed under the terms of the GNU * General Public License (GPL) Version 2, available from the file * COPYING in the main directory of this source tree, or the * OpenIB.org BSD license below: * * Redistribution and use in source and binary forms, with or * without modification, are permitted provided that the following * conditions are met: * * - Redistributions of source code must retain the above * copyright notice, this list of conditions and the following * disclaimer. * * - Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials * provided with the distribution. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "mlx5_core.h" MODULE_AUTHOR("Eli Cohen "); MODULE_DESCRIPTION("Mellanox Connect-IB, ConnectX-4 core driver"); MODULE_LICENSE("Dual BSD/GPL"); MODULE_VERSION(DRIVER_VERSION); int mlx5_core_debug_mask; module_param_named(debug_mask, mlx5_core_debug_mask, int, 0644); MODULE_PARM_DESC(debug_mask, "debug mask: 1 = dump cmd data, 2 = dump cmd exec time, 3 = both. Default=0"); #define MLX5_DEFAULT_PROF 2 static int prof_sel = MLX5_DEFAULT_PROF; module_param_named(prof_sel, prof_sel, int, 0444); MODULE_PARM_DESC(prof_sel, "profile selector. Valid range 0 - 2"); static LIST_HEAD(intf_list); static LIST_HEAD(dev_list); static DEFINE_MUTEX(intf_mutex); struct mlx5_device_context { struct list_head list; struct mlx5_interface *intf; void *context; }; static struct mlx5_profile profile[] = { [0] = { .mask = 0, }, [1] = { .mask = MLX5_PROF_MASK_QP_SIZE, .log_max_qp = 12, }, [2] = { .mask = MLX5_PROF_MASK_QP_SIZE | MLX5_PROF_MASK_MR_CACHE, .log_max_qp = 18, .mr_cache[0] = { .size = 500, .limit = 250 }, .mr_cache[1] = { .size = 500, .limit = 250 }, .mr_cache[2] = { .size = 500, .limit = 250 }, .mr_cache[3] = { .size = 500, .limit = 250 }, .mr_cache[4] = { .size = 500, .limit = 250 }, .mr_cache[5] = { .size = 500, .limit = 250 }, .mr_cache[6] = { .size = 500, .limit = 250 }, .mr_cache[7] = { .size = 500, .limit = 250 }, .mr_cache[8] = { .size = 500, .limit = 250 }, .mr_cache[9] = { .size = 500, .limit = 250 }, .mr_cache[10] = { .size = 500, .limit = 250 }, .mr_cache[11] = { .size = 500, .limit = 250 }, .mr_cache[12] = { .size = 64, .limit = 32 }, .mr_cache[13] = { .size = 32, .limit = 16 }, .mr_cache[14] = { .size = 16, .limit = 8 }, .mr_cache[15] = { .size = 8, .limit = 4 }, }, }; #define FW_INIT_TIMEOUT_MILI 2000 #define FW_INIT_WAIT_MS 2 #define FW_PRE_INIT_TIMEOUT_MILI 10000 static int wait_fw_init(struct mlx5_core_dev *dev, u32 max_wait_mili) { unsigned long end = jiffies + msecs_to_jiffies(max_wait_mili); int err = 0; while (fw_initializing(dev)) { if (time_after(jiffies, end)) { err = -EBUSY; break; } msleep(FW_INIT_WAIT_MS); } return err; } static int set_dma_caps(struct pci_dev *pdev) { int err; err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); if (err) { dev_warn(&pdev->dev, "Warning: couldn't set 64-bit PCI DMA mask\n"); err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); if (err) { dev_err(&pdev->dev, "Can't set PCI DMA mask, aborting\n"); return err; } } err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)); if (err) { dev_warn(&pdev->dev, "Warning: couldn't set 64-bit consistent PCI DMA mask\n"); err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); if (err) { dev_err(&pdev->dev, "Can't set consistent PCI DMA mask, aborting\n"); return err; } } dma_set_max_seg_size(&pdev->dev, 2u * 1024 * 1024 * 1024); return err; } static int mlx5_pci_enable_device(struct mlx5_core_dev *dev) { struct pci_dev *pdev = dev->pdev; int err = 0; mutex_lock(&dev->pci_status_mutex); if (dev->pci_status == MLX5_PCI_STATUS_DISABLED) { err = pci_enable_device(pdev); if (!err) dev->pci_status = MLX5_PCI_STATUS_ENABLED; } mutex_unlock(&dev->pci_status_mutex); return err; } static void mlx5_pci_disable_device(struct mlx5_core_dev *dev) { struct pci_dev *pdev = dev->pdev; mutex_lock(&dev->pci_status_mutex); if (dev->pci_status == MLX5_PCI_STATUS_ENABLED) { pci_disable_device(pdev); dev->pci_status = MLX5_PCI_STATUS_DISABLED; } mutex_unlock(&dev->pci_status_mutex); } static int request_bar(struct pci_dev *pdev) { int err = 0; if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) { dev_err(&pdev->dev, "Missing registers BAR, aborting\n"); return -ENODEV; } err = pci_request_regions(pdev, DRIVER_NAME); if (err) dev_err(&pdev->dev, "Couldn't get PCI resources, aborting\n"); return err; } static void release_bar(struct pci_dev *pdev) { pci_release_regions(pdev); } static int mlx5_enable_msix(struct mlx5_core_dev *dev) { struct mlx5_priv *priv = &dev->priv; struct mlx5_eq_table *table = &priv->eq_table; int num_eqs = 1 << MLX5_CAP_GEN(dev, log_max_eq); int nvec; int i; nvec = MLX5_CAP_GEN(dev, num_ports) * num_online_cpus() + MLX5_EQ_VEC_COMP_BASE; nvec = min_t(int, nvec, num_eqs); if (nvec <= MLX5_EQ_VEC_COMP_BASE) return -ENOMEM; priv->msix_arr = kcalloc(nvec, sizeof(*priv->msix_arr), GFP_KERNEL); priv->irq_info = kcalloc(nvec, sizeof(*priv->irq_info), GFP_KERNEL); if (!priv->msix_arr || !priv->irq_info) goto err_free_msix; for (i = 0; i < nvec; i++) priv->msix_arr[i].entry = i; nvec = pci_enable_msix_range(dev->pdev, priv->msix_arr, MLX5_EQ_VEC_COMP_BASE + 1, nvec); if (nvec < 0) return nvec; table->num_comp_vectors = nvec - MLX5_EQ_VEC_COMP_BASE; return 0; err_free_msix: kfree(priv->irq_info); kfree(priv->msix_arr); return -ENOMEM; } static void mlx5_disable_msix(struct mlx5_core_dev *dev) { struct mlx5_priv *priv = &dev->priv; pci_disable_msix(dev->pdev); kfree(priv->irq_info); kfree(priv->msix_arr); } struct mlx5_reg_host_endianess { u8 he; u8 rsvd[15]; }; #define CAP_MASK(pos, size) ((u64)((1 << (size)) - 1) << (pos)) enum { MLX5_CAP_BITS_RW_MASK = CAP_MASK(MLX5_CAP_OFF_CMDIF_CSUM, 2) | MLX5_DEV_CAP_FLAG_DCT, }; static u16 to_fw_pkey_sz(u32 size) { switch (size) { case 128: return 0; case 256: return 1; case 512: return 2; case 1024: return 3; case 2048: return 4; case 4096: return 5; default: pr_warn("invalid pkey table size %d\n", size); return 0; } } int mlx5_core_get_caps(struct mlx5_core_dev *dev, enum mlx5_cap_type cap_type, enum mlx5_cap_mode cap_mode) { u8 in[MLX5_ST_SZ_BYTES(query_hca_cap_in)]; int out_sz = MLX5_ST_SZ_BYTES(query_hca_cap_out); void *out, *hca_caps; u16 opmod = (cap_type << 1) | (cap_mode & 0x01); int err; memset(in, 0, sizeof(in)); out = kzalloc(out_sz, GFP_KERNEL); if (!out) return -ENOMEM; MLX5_SET(query_hca_cap_in, in, opcode, MLX5_CMD_OP_QUERY_HCA_CAP); MLX5_SET(query_hca_cap_in, in, op_mod, opmod); err = mlx5_cmd_exec(dev, in, sizeof(in), out, out_sz); if (err) goto query_ex; err = mlx5_cmd_status_to_err_v2(out); if (err) { mlx5_core_warn(dev, "QUERY_HCA_CAP : type(%x) opmode(%x) Failed(%d)\n", cap_type, cap_mode, err); goto query_ex; } hca_caps = MLX5_ADDR_OF(query_hca_cap_out, out, capability); switch (cap_mode) { case HCA_CAP_OPMOD_GET_MAX: memcpy(dev->hca_caps_max[cap_type], hca_caps, MLX5_UN_SZ_BYTES(hca_cap_union)); break; case HCA_CAP_OPMOD_GET_CUR: memcpy(dev->hca_caps_cur[cap_type], hca_caps, MLX5_UN_SZ_BYTES(hca_cap_union)); break; default: mlx5_core_warn(dev, "Tried to query dev cap type(%x) with wrong opmode(%x)\n", cap_type, cap_mode); err = -EINVAL; break; } query_ex: kfree(out); return err; } static int set_caps(struct mlx5_core_dev *dev, void *in, int in_sz) { u32 out[MLX5_ST_SZ_DW(set_hca_cap_out)]; int err; memset(out, 0, sizeof(out)); MLX5_SET(set_hca_cap_in, in, opcode, MLX5_CMD_OP_SET_HCA_CAP); err = mlx5_cmd_exec(dev, in, in_sz, out, sizeof(out)); if (err) return err; err = mlx5_cmd_status_to_err_v2(out); return err; } static int handle_hca_cap(struct mlx5_core_dev *dev) { void *set_ctx = NULL; struct mlx5_profile *prof = dev->profile; int err = -ENOMEM; int set_sz = MLX5_ST_SZ_BYTES(set_hca_cap_in); void *set_hca_cap; set_ctx = kzalloc(set_sz, GFP_KERNEL); if (!set_ctx) goto query_ex; err = mlx5_core_get_caps(dev, MLX5_CAP_GENERAL, HCA_CAP_OPMOD_GET_MAX); if (err) goto query_ex; err = mlx5_core_get_caps(dev, MLX5_CAP_GENERAL, HCA_CAP_OPMOD_GET_CUR); if (err) goto query_ex; set_hca_cap = MLX5_ADDR_OF(set_hca_cap_in, set_ctx, capability); memcpy(set_hca_cap, dev->hca_caps_cur[MLX5_CAP_GENERAL], MLX5_ST_SZ_BYTES(cmd_hca_cap)); mlx5_core_dbg(dev, "Current Pkey table size %d Setting new size %d\n", mlx5_to_sw_pkey_sz(MLX5_CAP_GEN(dev, pkey_table_size)), 128); /* we limit the size of the pkey table to 128 entries for now */ MLX5_SET(cmd_hca_cap, set_hca_cap, pkey_table_size, to_fw_pkey_sz(128)); /* Check log_max_qp from HCA caps to set in current profile */ if (MLX5_CAP_GEN_MAX(dev, log_max_qp) < profile[prof_sel].log_max_qp) { mlx5_core_warn(dev, "log_max_qp value in current profile is %d, changing it to HCA capability limit (%d)\n", profile[prof_sel].log_max_qp, MLX5_CAP_GEN_MAX(dev, log_max_qp)); profile[prof_sel].log_max_qp = MLX5_CAP_GEN_MAX(dev, log_max_qp); } if (prof->mask & MLX5_PROF_MASK_QP_SIZE) MLX5_SET(cmd_hca_cap, set_hca_cap, log_max_qp, prof->log_max_qp); /* disable cmdif checksum */ MLX5_SET(cmd_hca_cap, set_hca_cap, cmdif_checksum, 0); MLX5_SET(cmd_hca_cap, set_hca_cap, log_uar_page_sz, PAGE_SHIFT - 12); err = set_caps(dev, set_ctx, set_sz); query_ex: kfree(set_ctx); return err; } static int set_hca_ctrl(struct mlx5_core_dev *dev) { struct mlx5_reg_host_endianess he_in; struct mlx5_reg_host_endianess he_out; int err; memset(&he_in, 0, sizeof(he_in)); he_in.he = MLX5_SET_HOST_ENDIANNESS; err = mlx5_core_access_reg(dev, &he_in, sizeof(he_in), &he_out, sizeof(he_out), MLX5_REG_HOST_ENDIANNESS, 0, 1); return err; } static int mlx5_core_enable_hca(struct mlx5_core_dev *dev) { int err; struct mlx5_enable_hca_mbox_in in; struct mlx5_enable_hca_mbox_out out; memset(&in, 0, sizeof(in)); memset(&out, 0, sizeof(out)); in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_ENABLE_HCA); err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out)); if (err) return err; if (out.hdr.status) return mlx5_cmd_status_to_err(&out.hdr); return 0; } static int mlx5_core_disable_hca(struct mlx5_core_dev *dev) { int err; struct mlx5_disable_hca_mbox_in in; struct mlx5_disable_hca_mbox_out out; memset(&in, 0, sizeof(in)); memset(&out, 0, sizeof(out)); in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_DISABLE_HCA); err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out)); if (err) return err; if (out.hdr.status) return mlx5_cmd_status_to_err(&out.hdr); return 0; } static int mlx5_irq_set_affinity_hint(struct mlx5_core_dev *mdev, int i) { struct mlx5_priv *priv = &mdev->priv; struct msix_entry *msix = priv->msix_arr; int irq = msix[i + MLX5_EQ_VEC_COMP_BASE].vector; if (!zalloc_cpumask_var(&priv->irq_info[i].mask, GFP_KERNEL)) { mlx5_core_warn(mdev, "zalloc_cpumask_var failed"); return -ENOMEM; } cpumask_set_cpu(cpumask_local_spread(i, priv->numa_node), priv->irq_info[i].mask); if (IS_ENABLED(CONFIG_SMP) && irq_set_affinity_hint(irq, priv->irq_info[i].mask)) mlx5_core_warn(mdev, "irq_set_affinity_hint failed, irq 0x%.4x", irq); return 0; } static void mlx5_irq_clear_affinity_hint(struct mlx5_core_dev *mdev, int i) { struct mlx5_priv *priv = &mdev->priv; struct msix_entry *msix = priv->msix_arr; int irq = msix[i + MLX5_EQ_VEC_COMP_BASE].vector; irq_set_affinity_hint(irq, NULL); free_cpumask_var(priv->irq_info[i].mask); } static int mlx5_irq_set_affinity_hints(struct mlx5_core_dev *mdev) { int err; int i; for (i = 0; i < mdev->priv.eq_table.num_comp_vectors; i++) { err = mlx5_irq_set_affinity_hint(mdev, i); if (err) goto err_out; } return 0; err_out: for (i--; i >= 0; i--) mlx5_irq_clear_affinity_hint(mdev, i); return err; } static void mlx5_irq_clear_affinity_hints(struct mlx5_core_dev *mdev) { int i; for (i = 0; i < mdev->priv.eq_table.num_comp_vectors; i++) mlx5_irq_clear_affinity_hint(mdev, i); } int mlx5_vector2eqn(struct mlx5_core_dev *dev, int vector, int *eqn, unsigned int *irqn) { struct mlx5_eq_table *table = &dev->priv.eq_table; struct mlx5_eq *eq, *n; int err = -ENOENT; spin_lock(&table->lock); list_for_each_entry_safe(eq, n, &table->comp_eqs_list, list) { if (eq->index == vector) { *eqn = eq->eqn; *irqn = eq->irqn; err = 0; break; } } spin_unlock(&table->lock); return err; } EXPORT_SYMBOL(mlx5_vector2eqn); static void free_comp_eqs(struct mlx5_core_dev *dev) { struct mlx5_eq_table *table = &dev->priv.eq_table; struct mlx5_eq *eq, *n; spin_lock(&table->lock); list_for_each_entry_safe(eq, n, &table->comp_eqs_list, list) { list_del(&eq->list); spin_unlock(&table->lock); if (mlx5_destroy_unmap_eq(dev, eq)) mlx5_core_warn(dev, "failed to destroy EQ 0x%x\n", eq->eqn); kfree(eq); spin_lock(&table->lock); } spin_unlock(&table->lock); } static int alloc_comp_eqs(struct mlx5_core_dev *dev) { struct mlx5_eq_table *table = &dev->priv.eq_table; char name[MLX5_MAX_IRQ_NAME]; struct mlx5_eq *eq; int ncomp_vec; int nent; int err; int i; INIT_LIST_HEAD(&table->comp_eqs_list); ncomp_vec = table->num_comp_vectors; nent = MLX5_COMP_EQ_SIZE; for (i = 0; i < ncomp_vec; i++) { eq = kzalloc(sizeof(*eq), GFP_KERNEL); if (!eq) { err = -ENOMEM; goto clean; } snprintf(name, MLX5_MAX_IRQ_NAME, "mlx5_comp%d", i); err = mlx5_create_map_eq(dev, eq, i + MLX5_EQ_VEC_COMP_BASE, nent, 0, name, &dev->priv.uuari.uars[0]); if (err) { kfree(eq); goto clean; } mlx5_core_dbg(dev, "allocated completion EQN %d\n", eq->eqn); eq->index = i; spin_lock(&table->lock); list_add_tail(&eq->list, &table->comp_eqs_list); spin_unlock(&table->lock); } return 0; clean: free_comp_eqs(dev); return err; } #ifdef CONFIG_MLX5_CORE_EN static int mlx5_core_set_issi(struct mlx5_core_dev *dev) { u32 query_in[MLX5_ST_SZ_DW(query_issi_in)]; u32 query_out[MLX5_ST_SZ_DW(query_issi_out)]; u32 set_in[MLX5_ST_SZ_DW(set_issi_in)]; u32 set_out[MLX5_ST_SZ_DW(set_issi_out)]; int err; u32 sup_issi; memset(query_in, 0, sizeof(query_in)); memset(query_out, 0, sizeof(query_out)); MLX5_SET(query_issi_in, query_in, opcode, MLX5_CMD_OP_QUERY_ISSI); err = mlx5_cmd_exec_check_status(dev, query_in, sizeof(query_in), query_out, sizeof(query_out)); if (err) { if (((struct mlx5_outbox_hdr *)query_out)->status == MLX5_CMD_STAT_BAD_OP_ERR) { pr_debug("Only ISSI 0 is supported\n"); return 0; } pr_err("failed to query ISSI\n"); return err; } sup_issi = MLX5_GET(query_issi_out, query_out, supported_issi_dw0); if (sup_issi & (1 << 1)) { memset(set_in, 0, sizeof(set_in)); memset(set_out, 0, sizeof(set_out)); MLX5_SET(set_issi_in, set_in, opcode, MLX5_CMD_OP_SET_ISSI); MLX5_SET(set_issi_in, set_in, current_issi, 1); err = mlx5_cmd_exec_check_status(dev, set_in, sizeof(set_in), set_out, sizeof(set_out)); if (err) { pr_err("failed to set ISSI=1\n"); return err; } dev->issi = 1; return 0; } else if (sup_issi & (1 << 0) || !sup_issi) { return 0; } return -ENOTSUPP; } #endif static int map_bf_area(struct mlx5_core_dev *dev) { resource_size_t bf_start = pci_resource_start(dev->pdev, 0); resource_size_t bf_len = pci_resource_len(dev->pdev, 0); dev->priv.bf_mapping = io_mapping_create_wc(bf_start, bf_len); return dev->priv.bf_mapping ? 0 : -ENOMEM; } static void unmap_bf_area(struct mlx5_core_dev *dev) { if (dev->priv.bf_mapping) io_mapping_free(dev->priv.bf_mapping); } static void mlx5_add_device(struct mlx5_interface *intf, struct mlx5_priv *priv) { struct mlx5_device_context *dev_ctx; struct mlx5_core_dev *dev = container_of(priv, struct mlx5_core_dev, priv); dev_ctx = kmalloc(sizeof(*dev_ctx), GFP_KERNEL); if (!dev_ctx) return; dev_ctx->intf = intf; dev_ctx->context = intf->add(dev); if (dev_ctx->context) { spin_lock_irq(&priv->ctx_lock); list_add_tail(&dev_ctx->list, &priv->ctx_list); spin_unlock_irq(&priv->ctx_lock); } else { kfree(dev_ctx); } } static void mlx5_remove_device(struct mlx5_interface *intf, struct mlx5_priv *priv) { struct mlx5_device_context *dev_ctx; struct mlx5_core_dev *dev = container_of(priv, struct mlx5_core_dev, priv); list_for_each_entry(dev_ctx, &priv->ctx_list, list) if (dev_ctx->intf == intf) { spin_lock_irq(&priv->ctx_lock); list_del(&dev_ctx->list); spin_unlock_irq(&priv->ctx_lock); intf->remove(dev, dev_ctx->context); kfree(dev_ctx); return; } } static int mlx5_register_device(struct mlx5_core_dev *dev) { struct mlx5_priv *priv = &dev->priv; struct mlx5_interface *intf; mutex_lock(&intf_mutex); list_add_tail(&priv->dev_list, &dev_list); list_for_each_entry(intf, &intf_list, list) mlx5_add_device(intf, priv); mutex_unlock(&intf_mutex); return 0; } static void mlx5_unregister_device(struct mlx5_core_dev *dev) { struct mlx5_priv *priv = &dev->priv; struct mlx5_interface *intf; mutex_lock(&intf_mutex); list_for_each_entry_reverse(intf, &intf_list, list) mlx5_remove_device(intf, priv); list_del(&priv->dev_list); mutex_unlock(&intf_mutex); } int mlx5_register_interface(struct mlx5_interface *intf) { struct mlx5_priv *priv; if (!intf->add || !intf->remove) return -EINVAL; mutex_lock(&intf_mutex); list_add_tail(&intf->list, &intf_list); list_for_each_entry(priv, &dev_list, dev_list) mlx5_add_device(intf, priv); mutex_unlock(&intf_mutex); return 0; } EXPORT_SYMBOL(mlx5_register_interface); void mlx5_unregister_interface(struct mlx5_interface *intf) { struct mlx5_priv *priv; mutex_lock(&intf_mutex); list_for_each_entry(priv, &dev_list, dev_list) mlx5_remove_device(intf, priv); list_del(&intf->list); mutex_unlock(&intf_mutex); } EXPORT_SYMBOL(mlx5_unregister_interface); void *mlx5_get_protocol_dev(struct mlx5_core_dev *mdev, int protocol) { struct mlx5_priv *priv = &mdev->priv; struct mlx5_device_context *dev_ctx; unsigned long flags; void *result = NULL; spin_lock_irqsave(&priv->ctx_lock, flags); list_for_each_entry(dev_ctx, &mdev->priv.ctx_list, list) if ((dev_ctx->intf->protocol == protocol) && dev_ctx->intf->get_dev) { result = dev_ctx->intf->get_dev(dev_ctx->context); break; } spin_unlock_irqrestore(&priv->ctx_lock, flags); return result; } EXPORT_SYMBOL(mlx5_get_protocol_dev); static int mlx5_pci_init(struct mlx5_core_dev *dev, struct mlx5_priv *priv) { struct pci_dev *pdev = dev->pdev; int err = 0; pci_set_drvdata(dev->pdev, dev); strncpy(priv->name, dev_name(&pdev->dev), MLX5_MAX_NAME_LEN); priv->name[MLX5_MAX_NAME_LEN - 1] = 0; mutex_init(&priv->pgdir_mutex); INIT_LIST_HEAD(&priv->pgdir_list); spin_lock_init(&priv->mkey_lock); mutex_init(&priv->alloc_mutex); priv->numa_node = dev_to_node(&dev->pdev->dev); priv->dbg_root = debugfs_create_dir(dev_name(&pdev->dev), mlx5_debugfs_root); if (!priv->dbg_root) return -ENOMEM; err = mlx5_pci_enable_device(dev); if (err) { dev_err(&pdev->dev, "Cannot enable PCI device, aborting\n"); goto err_dbg; } err = request_bar(pdev); if (err) { dev_err(&pdev->dev, "error requesting BARs, aborting\n"); goto err_disable; } pci_set_master(pdev); err = set_dma_caps(pdev); if (err) { dev_err(&pdev->dev, "Failed setting DMA capabilities mask, aborting\n"); goto err_clr_master; } dev->iseg_base = pci_resource_start(dev->pdev, 0); dev->iseg = ioremap(dev->iseg_base, sizeof(*dev->iseg)); if (!dev->iseg) { err = -ENOMEM; dev_err(&pdev->dev, "Failed mapping initialization segment, aborting\n"); goto err_clr_master; } return 0; err_clr_master: pci_clear_master(dev->pdev); release_bar(dev->pdev); err_disable: mlx5_pci_disable_device(dev); err_dbg: debugfs_remove(priv->dbg_root); return err; } static void mlx5_pci_close(struct mlx5_core_dev *dev, struct mlx5_priv *priv) { iounmap(dev->iseg); pci_clear_master(dev->pdev); release_bar(dev->pdev); mlx5_pci_disable_device(dev); debugfs_remove(priv->dbg_root); } #define MLX5_IB_MOD "mlx5_ib" static int mlx5_load_one(struct mlx5_core_dev *dev, struct mlx5_priv *priv) { struct pci_dev *pdev = dev->pdev; int err; mutex_lock(&dev->intf_state_mutex); if (dev->interface_state == MLX5_INTERFACE_STATE_UP) { dev_warn(&dev->pdev->dev, "%s: interface is up, NOP\n", __func__); goto out; } dev_info(&pdev->dev, "firmware version: %d.%d.%d\n", fw_rev_maj(dev), fw_rev_min(dev), fw_rev_sub(dev)); /* on load removing any previous indication of internal error, device is * up */ dev->state = MLX5_DEVICE_STATE_UP; /* wait for firmware to accept initialization segments configurations */ err = wait_fw_init(dev, FW_PRE_INIT_TIMEOUT_MILI); if (err) { dev_err(&dev->pdev->dev, "Firmware over %d MS in pre-initializing state, aborting\n", FW_PRE_INIT_TIMEOUT_MILI); goto out_err; } err = mlx5_cmd_init(dev); if (err) { dev_err(&pdev->dev, "Failed initializing command interface, aborting\n"); goto out_err; } err = wait_fw_init(dev, FW_INIT_TIMEOUT_MILI); if (err) { dev_err(&dev->pdev->dev, "Firmware over %d MS in initializing state, aborting\n", FW_INIT_TIMEOUT_MILI); goto out_err; } mlx5_pagealloc_init(dev); err = mlx5_core_enable_hca(dev); if (err) { dev_err(&pdev->dev, "enable hca failed\n"); goto err_pagealloc_cleanup; } #ifdef CONFIG_MLX5_CORE_EN err = mlx5_core_set_issi(dev); if (err) { dev_err(&pdev->dev, "failed to set issi\n"); goto err_disable_hca; } #endif err = mlx5_satisfy_startup_pages(dev, 1); if (err) { dev_err(&pdev->dev, "failed to allocate boot pages\n"); goto err_disable_hca; } err = set_hca_ctrl(dev); if (err) { dev_err(&pdev->dev, "set_hca_ctrl failed\n"); goto reclaim_boot_pages; } err = handle_hca_cap(dev); if (err) { dev_err(&pdev->dev, "handle_hca_cap failed\n"); goto reclaim_boot_pages; } err = mlx5_satisfy_startup_pages(dev, 0); if (err) { dev_err(&pdev->dev, "failed to allocate init pages\n"); goto reclaim_boot_pages; } err = mlx5_pagealloc_start(dev); if (err) { dev_err(&pdev->dev, "mlx5_pagealloc_start failed\n"); goto reclaim_boot_pages; } err = mlx5_cmd_init_hca(dev); if (err) { dev_err(&pdev->dev, "init hca failed\n"); goto err_pagealloc_stop; } mlx5_start_health_poll(dev); err = mlx5_query_hca_caps(dev); if (err) { dev_err(&pdev->dev, "query hca failed\n"); goto err_stop_poll; } err = mlx5_query_board_id(dev); if (err) { dev_err(&pdev->dev, "query board id failed\n"); goto err_stop_poll; } err = mlx5_enable_msix(dev); if (err) { dev_err(&pdev->dev, "enable msix failed\n"); goto err_stop_poll; } err = mlx5_eq_init(dev); if (err) { dev_err(&pdev->dev, "failed to initialize eq\n"); goto disable_msix; } err = mlx5_alloc_uuars(dev, &priv->uuari); if (err) { dev_err(&pdev->dev, "Failed allocating uar, aborting\n"); goto err_eq_cleanup; } err = mlx5_start_eqs(dev); if (err) { dev_err(&pdev->dev, "Failed to start pages and async EQs\n"); goto err_free_uar; } err = alloc_comp_eqs(dev); if (err) { dev_err(&pdev->dev, "Failed to alloc completion EQs\n"); goto err_stop_eqs; } if (map_bf_area(dev)) dev_err(&pdev->dev, "Failed to map blue flame area\n"); err = mlx5_irq_set_affinity_hints(dev); if (err) { dev_err(&pdev->dev, "Failed to alloc affinity hint cpumask\n"); goto err_unmap_bf_area; } MLX5_INIT_DOORBELL_LOCK(&priv->cq_uar_lock); mlx5_init_cq_table(dev); mlx5_init_qp_table(dev); mlx5_init_srq_table(dev); mlx5_init_mr_table(dev); err = mlx5_register_device(dev); if (err) { dev_err(&pdev->dev, "mlx5_register_device failed %d\n", err); goto err_reg_dev; } err = request_module_nowait(MLX5_IB_MOD); if (err) pr_info("failed request module on %s\n", MLX5_IB_MOD); dev->interface_state = MLX5_INTERFACE_STATE_UP; out: mutex_unlock(&dev->intf_state_mutex); return 0; err_reg_dev: mlx5_cleanup_mr_table(dev); mlx5_cleanup_srq_table(dev); mlx5_cleanup_qp_table(dev); mlx5_cleanup_cq_table(dev); mlx5_irq_clear_affinity_hints(dev); err_unmap_bf_area: unmap_bf_area(dev); free_comp_eqs(dev); err_stop_eqs: mlx5_stop_eqs(dev); err_free_uar: mlx5_free_uuars(dev, &priv->uuari); err_eq_cleanup: mlx5_eq_cleanup(dev); disable_msix: mlx5_disable_msix(dev); err_stop_poll: mlx5_stop_health_poll(dev); if (mlx5_cmd_teardown_hca(dev)) { dev_err(&dev->pdev->dev, "tear_down_hca failed, skip cleanup\n"); goto out_err; } err_pagealloc_stop: mlx5_pagealloc_stop(dev); reclaim_boot_pages: mlx5_reclaim_startup_pages(dev); err_disable_hca: mlx5_core_disable_hca(dev); err_pagealloc_cleanup: mlx5_pagealloc_cleanup(dev); mlx5_cmd_cleanup(dev); out_err: dev->state = MLX5_DEVICE_STATE_INTERNAL_ERROR; mutex_unlock(&dev->intf_state_mutex); return err; } static int mlx5_unload_one(struct mlx5_core_dev *dev, struct mlx5_priv *priv) { int err = 0; mutex_lock(&dev->intf_state_mutex); if (dev->interface_state == MLX5_INTERFACE_STATE_DOWN) { dev_warn(&dev->pdev->dev, "%s: interface is down, NOP\n", __func__); goto out; } mlx5_unregister_device(dev); mlx5_cleanup_mr_table(dev); mlx5_cleanup_srq_table(dev); mlx5_cleanup_qp_table(dev); mlx5_cleanup_cq_table(dev); mlx5_irq_clear_affinity_hints(dev); unmap_bf_area(dev); free_comp_eqs(dev); mlx5_stop_eqs(dev); mlx5_free_uuars(dev, &priv->uuari); mlx5_eq_cleanup(dev); mlx5_disable_msix(dev); mlx5_stop_health_poll(dev); err = mlx5_cmd_teardown_hca(dev); if (err) { dev_err(&dev->pdev->dev, "tear_down_hca failed, skip cleanup\n"); goto out; } mlx5_pagealloc_stop(dev); mlx5_reclaim_startup_pages(dev); mlx5_core_disable_hca(dev); mlx5_pagealloc_cleanup(dev); mlx5_cmd_cleanup(dev); out: dev->interface_state = MLX5_INTERFACE_STATE_DOWN; mutex_unlock(&dev->intf_state_mutex); return err; } void mlx5_core_event(struct mlx5_core_dev *dev, enum mlx5_dev_event event, unsigned long param) { struct mlx5_priv *priv = &dev->priv; struct mlx5_device_context *dev_ctx; unsigned long flags; spin_lock_irqsave(&priv->ctx_lock, flags); list_for_each_entry(dev_ctx, &priv->ctx_list, list) if (dev_ctx->intf->event) dev_ctx->intf->event(dev, dev_ctx->context, event, param); spin_unlock_irqrestore(&priv->ctx_lock, flags); } struct mlx5_core_event_handler { void (*event)(struct mlx5_core_dev *dev, enum mlx5_dev_event event, void *data); }; static int init_one(struct pci_dev *pdev, const struct pci_device_id *id) { struct mlx5_core_dev *dev; struct mlx5_priv *priv; int err; dev = kzalloc(sizeof(*dev), GFP_KERNEL); if (!dev) { dev_err(&pdev->dev, "kzalloc failed\n"); return -ENOMEM; } priv = &dev->priv; pci_set_drvdata(pdev, dev); if (prof_sel < 0 || prof_sel >= ARRAY_SIZE(profile)) { pr_warn("selected profile out of range, selecting default (%d)\n", MLX5_DEFAULT_PROF); prof_sel = MLX5_DEFAULT_PROF; } dev->profile = &profile[prof_sel]; dev->pdev = pdev; dev->event = mlx5_core_event; INIT_LIST_HEAD(&priv->ctx_list); spin_lock_init(&priv->ctx_lock); mutex_init(&dev->pci_status_mutex); mutex_init(&dev->intf_state_mutex); err = mlx5_pci_init(dev, priv); if (err) { dev_err(&pdev->dev, "mlx5_pci_init failed with error code %d\n", err); goto clean_dev; } err = mlx5_health_init(dev); if (err) { dev_err(&pdev->dev, "mlx5_health_init failed with error code %d\n", err); goto close_pci; } err = mlx5_load_one(dev, priv); if (err) { dev_err(&pdev->dev, "mlx5_load_one failed with error code %d\n", err); goto clean_health; } return 0; clean_health: mlx5_health_cleanup(dev); close_pci: mlx5_pci_close(dev, priv); clean_dev: pci_set_drvdata(pdev, NULL); kfree(dev); return err; } static void remove_one(struct pci_dev *pdev) { struct mlx5_core_dev *dev = pci_get_drvdata(pdev); struct mlx5_priv *priv = &dev->priv; if (mlx5_unload_one(dev, priv)) { dev_err(&dev->pdev->dev, "mlx5_unload_one failed\n"); mlx5_health_cleanup(dev); return; } mlx5_health_cleanup(dev); mlx5_pci_close(dev, priv); pci_set_drvdata(pdev, NULL); kfree(dev); } static pci_ers_result_t mlx5_pci_err_detected(struct pci_dev *pdev, pci_channel_state_t state) { struct mlx5_core_dev *dev = pci_get_drvdata(pdev); struct mlx5_priv *priv = &dev->priv; dev_info(&pdev->dev, "%s was called\n", __func__); mlx5_enter_error_state(dev); mlx5_unload_one(dev, priv); pci_save_state(pdev); mlx5_pci_disable_device(dev); return state == pci_channel_io_perm_failure ? PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_NEED_RESET; } /* wait for the device to show vital signs by waiting * for the health counter to start counting. */ static int wait_vital(struct pci_dev *pdev) { struct mlx5_core_dev *dev = pci_get_drvdata(pdev); struct mlx5_core_health *health = &dev->priv.health; const int niter = 100; u32 last_count = 0; u32 count; int i; for (i = 0; i < niter; i++) { count = ioread32be(health->health_counter); if (count && count != 0xffffffff) { if (last_count && last_count != count) { dev_info(&pdev->dev, "Counter value 0x%x after %d iterations\n", count, i); return 0; } last_count = count; } msleep(50); } return -ETIMEDOUT; } static pci_ers_result_t mlx5_pci_slot_reset(struct pci_dev *pdev) { struct mlx5_core_dev *dev = pci_get_drvdata(pdev); int err; dev_info(&pdev->dev, "%s was called\n", __func__); err = mlx5_pci_enable_device(dev); if (err) { dev_err(&pdev->dev, "%s: mlx5_pci_enable_device failed with error code: %d\n" , __func__, err); return PCI_ERS_RESULT_DISCONNECT; } pci_set_master(pdev); pci_restore_state(pdev); if (wait_vital(pdev)) { dev_err(&pdev->dev, "%s: wait_vital timed out\n", __func__); return PCI_ERS_RESULT_DISCONNECT; } return PCI_ERS_RESULT_RECOVERED; } void mlx5_disable_device(struct mlx5_core_dev *dev) { mlx5_pci_err_detected(dev->pdev, 0); } static void mlx5_pci_resume(struct pci_dev *pdev) { struct mlx5_core_dev *dev = pci_get_drvdata(pdev); struct mlx5_priv *priv = &dev->priv; int err; dev_info(&pdev->dev, "%s was called\n", __func__); err = mlx5_load_one(dev, priv); if (err) dev_err(&pdev->dev, "%s: mlx5_load_one failed with error code: %d\n" , __func__, err); else dev_info(&pdev->dev, "%s: device recovered\n", __func__); } static const struct pci_error_handlers mlx5_err_handler = { .error_detected = mlx5_pci_err_detected, .slot_reset = mlx5_pci_slot_reset, .resume = mlx5_pci_resume }; static const struct pci_device_id mlx5_core_pci_table[] = { { PCI_VDEVICE(MELLANOX, 0x1011) }, /* Connect-IB */ { PCI_VDEVICE(MELLANOX, 0x1012) }, /* Connect-IB VF */ { PCI_VDEVICE(MELLANOX, 0x1013) }, /* ConnectX-4 */ { PCI_VDEVICE(MELLANOX, 0x1014) }, /* ConnectX-4 VF */ { PCI_VDEVICE(MELLANOX, 0x1015) }, /* ConnectX-4LX */ { PCI_VDEVICE(MELLANOX, 0x1016) }, /* ConnectX-4LX VF */ { 0, } }; MODULE_DEVICE_TABLE(pci, mlx5_core_pci_table); static struct pci_driver mlx5_core_driver = { .name = DRIVER_NAME, .id_table = mlx5_core_pci_table, .probe = init_one, .remove = remove_one, .err_handler = &mlx5_err_handler }; static int __init init(void) { int err; mlx5_register_debugfs(); err = pci_register_driver(&mlx5_core_driver); if (err) goto err_debug; #ifdef CONFIG_MLX5_CORE_EN mlx5e_init(); #endif return 0; err_debug: mlx5_unregister_debugfs(); return err; } static void __exit cleanup(void) { #ifdef CONFIG_MLX5_CORE_EN mlx5e_cleanup(); #endif pci_unregister_driver(&mlx5_core_driver); mlx5_unregister_debugfs(); } module_init(init); module_exit(cleanup);