| /* |
| * 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 <linux/highmem.h> |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/errno.h> |
| #include <linux/pci.h> |
| #include <linux/dma-mapping.h> |
| #include <linux/slab.h> |
| #include <linux/io-mapping.h> |
| #include <linux/interrupt.h> |
| #include <linux/delay.h> |
| #include <linux/mlx5/driver.h> |
| #include <linux/mlx5/cq.h> |
| #include <linux/mlx5/qp.h> |
| #include <linux/mlx5/srq.h> |
| #include <linux/debugfs.h> |
| #include <linux/kmod.h> |
| #include <linux/delay.h> |
| #include <linux/mlx5/mlx5_ifc.h> |
| #include "mlx5_core.h" |
| #include "fs_core.h" |
| #ifdef CONFIG_MLX5_CORE_EN |
| #include "eswitch.h" |
| #endif |
| |
| MODULE_AUTHOR("Eli Cohen <eli@mellanox.com>"); |
| 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; |
| }; |
| |
| enum { |
| MLX5_ATOMIC_REQ_MODE_BE = 0x0, |
| MLX5_ATOMIC_REQ_MODE_HOST_ENDIANNESS = 0x1, |
| }; |
| |
| 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 = 17, |
| .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 |
| |
| 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; |
| } |
| } |
| |
| static int mlx5_core_get_caps_mode(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; |
| } |
| |
| int mlx5_core_get_caps(struct mlx5_core_dev *dev, enum mlx5_cap_type cap_type) |
| { |
| int ret; |
| |
| ret = mlx5_core_get_caps_mode(dev, cap_type, HCA_CAP_OPMOD_GET_CUR); |
| if (ret) |
| return ret; |
| return mlx5_core_get_caps_mode(dev, cap_type, HCA_CAP_OPMOD_GET_MAX); |
| } |
| |
| static int set_caps(struct mlx5_core_dev *dev, void *in, int in_sz, int opmod) |
| { |
| 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); |
| MLX5_SET(set_hca_cap_in, in, op_mod, opmod << 1); |
| 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_atomic(struct mlx5_core_dev *dev) |
| { |
| void *set_ctx; |
| void *set_hca_cap; |
| int set_sz = MLX5_ST_SZ_BYTES(set_hca_cap_in); |
| int req_endianness; |
| int err; |
| |
| if (MLX5_CAP_GEN(dev, atomic)) { |
| err = mlx5_core_get_caps(dev, MLX5_CAP_ATOMIC); |
| if (err) |
| return err; |
| } else { |
| return 0; |
| } |
| |
| req_endianness = |
| MLX5_CAP_ATOMIC(dev, |
| supported_atomic_req_8B_endianess_mode_1); |
| |
| if (req_endianness != MLX5_ATOMIC_REQ_MODE_HOST_ENDIANNESS) |
| return 0; |
| |
| set_ctx = kzalloc(set_sz, GFP_KERNEL); |
| if (!set_ctx) |
| return -ENOMEM; |
| |
| set_hca_cap = MLX5_ADDR_OF(set_hca_cap_in, set_ctx, capability); |
| |
| /* Set requestor to host endianness */ |
| MLX5_SET(atomic_caps, set_hca_cap, atomic_req_8B_endianess_mode, |
| MLX5_ATOMIC_REQ_MODE_HOST_ENDIANNESS); |
| |
| err = set_caps(dev, set_ctx, set_sz, MLX5_SET_HCA_CAP_OP_MOD_ATOMIC); |
| |
| kfree(set_ctx); |
| 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); |
| 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)); |
| |
| 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, |
| MLX5_SET_HCA_CAP_OP_MOD_GENERAL_DEVICE); |
| |
| 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; |
| |
| if (!mlx5_core_is_pf(dev)) |
| return 0; |
| |
| 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; |
| } |
| |
| int mlx5_core_enable_hca(struct mlx5_core_dev *dev, u16 func_id) |
| { |
| u32 out[MLX5_ST_SZ_DW(enable_hca_out)]; |
| u32 in[MLX5_ST_SZ_DW(enable_hca_in)]; |
| int err; |
| |
| memset(in, 0, sizeof(in)); |
| MLX5_SET(enable_hca_in, in, opcode, MLX5_CMD_OP_ENABLE_HCA); |
| MLX5_SET(enable_hca_in, in, function_id, func_id); |
| memset(out, 0, sizeof(out)); |
| |
| err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out)); |
| if (err) |
| return err; |
| |
| return mlx5_cmd_status_to_err_v2(out); |
| } |
| |
| int mlx5_core_disable_hca(struct mlx5_core_dev *dev, u16 func_id) |
| { |
| u32 out[MLX5_ST_SZ_DW(disable_hca_out)]; |
| u32 in[MLX5_ST_SZ_DW(disable_hca_in)]; |
| int err; |
| |
| memset(in, 0, sizeof(in)); |
| MLX5_SET(disable_hca_in, in, opcode, MLX5_CMD_OP_DISABLE_HCA); |
| MLX5_SET(disable_hca_in, in, function_id, func_id); |
| memset(out, 0, sizeof(out)); |
| err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out)); |
| if (err) |
| return err; |
| |
| return mlx5_cmd_status_to_err_v2(out); |
| } |
| |
| cycle_t mlx5_read_internal_timer(struct mlx5_core_dev *dev) |
| { |
| u32 timer_h, timer_h1, timer_l; |
| |
| timer_h = ioread32be(&dev->iseg->internal_timer_h); |
| timer_l = ioread32be(&dev->iseg->internal_timer_l); |
| timer_h1 = ioread32be(&dev->iseg->internal_timer_h); |
| if (timer_h != timer_h1) /* wrap around */ |
| timer_l = ioread32be(&dev->iseg->internal_timer_l); |
| |
| return (cycle_t)timer_l | (cycle_t)timer_h1 << 32; |
| } |
| |
| 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; |
| int numa_node = priv->numa_node; |
| int err; |
| |
| 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, numa_node), |
| priv->irq_info[i].mask); |
| |
| err = irq_set_affinity_hint(irq, priv->irq_info[i].mask); |
| if (err) { |
| mlx5_core_warn(mdev, "irq_set_affinity_hint failed,irq 0x%.4x", |
| irq); |
| goto err_clear_mask; |
| } |
| |
| return 0; |
| |
| err_clear_mask: |
| free_cpumask_var(priv->irq_info[i].mask); |
| return err; |
| } |
| |
| 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; |
| } |
| |
| 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; |
| } |
| |
| 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(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 (test_bit(MLX5_INTERFACE_STATE_UP, &dev->intf_state)) { |
| 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; |
| |
| 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, 0); |
| if (err) { |
| dev_err(&pdev->dev, "enable hca failed\n"); |
| goto err_pagealloc_cleanup; |
| } |
| |
| err = mlx5_core_set_issi(dev); |
| if (err) { |
| dev_err(&pdev->dev, "failed to set issi\n"); |
| goto err_disable_hca; |
| } |
| |
| 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 = handle_hca_cap_atomic(dev); |
| if (err) { |
| dev_err(&pdev->dev, "handle_hca_cap_atomic 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; |
| } |
| |
| err = mlx5_irq_set_affinity_hints(dev); |
| if (err) |
| dev_err(&pdev->dev, "Failed to alloc affinity hint cpumask\n"); |
| |
| 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_mkey_table(dev); |
| |
| err = mlx5_init_fs(dev); |
| if (err) { |
| dev_err(&pdev->dev, "Failed to init flow steering\n"); |
| goto err_fs; |
| } |
| #ifdef CONFIG_MLX5_CORE_EN |
| err = mlx5_eswitch_init(dev); |
| if (err) { |
| dev_err(&pdev->dev, "eswitch init failed %d\n", err); |
| goto err_reg_dev; |
| } |
| #endif |
| |
| err = mlx5_sriov_init(dev); |
| if (err) { |
| dev_err(&pdev->dev, "sriov init failed %d\n", err); |
| goto err_sriov; |
| } |
| |
| 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); |
| |
| clear_bit(MLX5_INTERFACE_STATE_DOWN, &dev->intf_state); |
| set_bit(MLX5_INTERFACE_STATE_UP, &dev->intf_state); |
| out: |
| mutex_unlock(&dev->intf_state_mutex); |
| |
| return 0; |
| |
| err_sriov: |
| if (mlx5_sriov_cleanup(dev)) |
| dev_err(&dev->pdev->dev, "sriov cleanup failed\n"); |
| |
| #ifdef CONFIG_MLX5_CORE_EN |
| mlx5_eswitch_cleanup(dev->priv.eswitch); |
| #endif |
| err_reg_dev: |
| mlx5_cleanup_fs(dev); |
| err_fs: |
| mlx5_cleanup_mkey_table(dev); |
| mlx5_cleanup_srq_table(dev); |
| mlx5_cleanup_qp_table(dev); |
| mlx5_cleanup_cq_table(dev); |
| mlx5_irq_clear_affinity_hints(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, 0); |
| |
| 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; |
| |
| err = mlx5_sriov_cleanup(dev); |
| if (err) { |
| dev_warn(&dev->pdev->dev, "%s: sriov cleanup failed - abort\n", |
| __func__); |
| return err; |
| } |
| |
| mutex_lock(&dev->intf_state_mutex); |
| if (test_bit(MLX5_INTERFACE_STATE_DOWN, &dev->intf_state)) { |
| dev_warn(&dev->pdev->dev, "%s: interface is down, NOP\n", |
| __func__); |
| goto out; |
| } |
| mlx5_unregister_device(dev); |
| #ifdef CONFIG_MLX5_CORE_EN |
| mlx5_eswitch_cleanup(dev->priv.eswitch); |
| #endif |
| |
| mlx5_cleanup_fs(dev); |
| mlx5_cleanup_mkey_table(dev); |
| mlx5_cleanup_srq_table(dev); |
| mlx5_cleanup_qp_table(dev); |
| mlx5_cleanup_cq_table(dev); |
| mlx5_irq_clear_affinity_hints(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, 0); |
| mlx5_pagealloc_cleanup(dev); |
| mlx5_cmd_cleanup(dev); |
| |
| out: |
| clear_bit(MLX5_INTERFACE_STATE_UP, &dev->intf_state); |
| set_bit(MLX5_INTERFACE_STATE_DOWN, &dev->intf_state); |
| 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; |
| priv->pci_dev_data = id->driver_data; |
| |
| 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); |
| mlx5_pci_disable_device(dev); |
| return state == pci_channel_io_perm_failure ? |
| PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_NEED_RESET; |
| } |
| |
| static pci_ers_result_t mlx5_pci_slot_reset(struct pci_dev *pdev) |
| { |
| struct mlx5_core_dev *dev = pci_get_drvdata(pdev); |
| int err = 0; |
| |
| 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_set_power_state(pdev, PCI_D0); |
| pci_restore_state(pdev); |
| |
| return err ? PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_RECOVERED; |
| } |
| |
| void mlx5_disable_device(struct mlx5_core_dev *dev) |
| { |
| mlx5_pci_err_detected(dev->pdev, 0); |
| } |
| |
| /* wait for the device to show vital signs. For now we check |
| * that we can read the device ID and that the health buffer |
| * shows a non zero value which is different than 0xffffffff |
| */ |
| static void 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 count; |
| u16 did; |
| int i; |
| |
| /* Wait for firmware to be ready after reset */ |
| msleep(1000); |
| for (i = 0; i < niter; i++) { |
| if (pci_read_config_word(pdev, 2, &did)) { |
| dev_warn(&pdev->dev, "failed reading config word\n"); |
| break; |
| } |
| if (did == pdev->device) { |
| dev_info(&pdev->dev, "device ID correctly read after %d iterations\n", i); |
| break; |
| } |
| msleep(50); |
| } |
| if (i == niter) |
| dev_warn(&pdev->dev, "%s-%d: could not read device ID\n", __func__, __LINE__); |
| |
| for (i = 0; i < niter; i++) { |
| count = ioread32be(health->health_counter); |
| if (count && count != 0xffffffff) { |
| dev_info(&pdev->dev, "Counter value 0x%x after %d iterations\n", count, i); |
| break; |
| } |
| msleep(50); |
| } |
| |
| if (i == niter) |
| dev_warn(&pdev->dev, "%s-%d: could not read device ID\n", __func__, __LINE__); |
| } |
| |
| 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__); |
| |
| pci_save_state(pdev); |
| wait_vital(pdev); |
| |
| 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 void shutdown(struct pci_dev *pdev) |
| { |
| struct mlx5_core_dev *dev = pci_get_drvdata(pdev); |
| struct mlx5_priv *priv = &dev->priv; |
| |
| dev_info(&pdev->dev, "Shutdown was called\n"); |
| /* Notify mlx5 clients that the kernel is being shut down */ |
| set_bit(MLX5_INTERFACE_STATE_SHUTDOWN, &dev->intf_state); |
| mlx5_unload_one(dev, priv); |
| mlx5_pci_disable_device(dev); |
| } |
| |
| static const struct pci_device_id mlx5_core_pci_table[] = { |
| { PCI_VDEVICE(MELLANOX, 0x1011) }, /* Connect-IB */ |
| { PCI_VDEVICE(MELLANOX, 0x1012), MLX5_PCI_DEV_IS_VF}, /* Connect-IB VF */ |
| { PCI_VDEVICE(MELLANOX, 0x1013) }, /* ConnectX-4 */ |
| { PCI_VDEVICE(MELLANOX, 0x1014), MLX5_PCI_DEV_IS_VF}, /* ConnectX-4 VF */ |
| { PCI_VDEVICE(MELLANOX, 0x1015) }, /* ConnectX-4LX */ |
| { PCI_VDEVICE(MELLANOX, 0x1016), MLX5_PCI_DEV_IS_VF}, /* ConnectX-4LX VF */ |
| { PCI_VDEVICE(MELLANOX, 0x1017) }, /* ConnectX-5 */ |
| { PCI_VDEVICE(MELLANOX, 0x1018), MLX5_PCI_DEV_IS_VF}, /* ConnectX-5 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, |
| .shutdown = shutdown, |
| .err_handler = &mlx5_err_handler, |
| .sriov_configure = mlx5_core_sriov_configure, |
| }; |
| |
| 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); |