| /* |
| * Copyright (c) 2007 Cisco, Inc. 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. |
| */ |
| |
| #if HAVE_CONFIG_H |
| # include <config.h> |
| #endif /* HAVE_CONFIG_H */ |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <unistd.h> |
| #include <errno.h> |
| #include <sys/mman.h> |
| #include <pthread.h> |
| #include <string.h> |
| |
| #ifndef HAVE_IBV_REGISTER_DRIVER |
| #include <sysfs/libsysfs.h> |
| #endif |
| |
| #include "mlx4.h" |
| #include "mlx4-abi.h" |
| |
| #ifndef PCI_VENDOR_ID_MELLANOX |
| #define PCI_VENDOR_ID_MELLANOX 0x15b3 |
| #endif |
| |
| #define HCA(v, d) \ |
| { .vendor = PCI_VENDOR_ID_##v, \ |
| .device = d } |
| |
| struct { |
| unsigned vendor; |
| unsigned device; |
| } hca_table[] = { |
| HCA(MELLANOX, 0x6340), /* MT25408 "Hermon" SDR */ |
| HCA(MELLANOX, 0x634a), /* MT25408 "Hermon" DDR */ |
| HCA(MELLANOX, 0x6354), /* MT25408 "Hermon" QDR */ |
| HCA(MELLANOX, 0x6732), /* MT25408 "Hermon" DDR PCIe gen2 */ |
| HCA(MELLANOX, 0x673c), /* MT25408 "Hermon" QDR PCIe gen2 */ |
| HCA(MELLANOX, 0x6368), /* MT25408 "Hermon" EN 10GigE */ |
| HCA(MELLANOX, 0x6750), /* MT25408 "Hermon" EN 10GigE PCIe gen2 */ |
| HCA(MELLANOX, 0x6372), /* MT25458 ConnectX EN 10GBASE-T 10GigE */ |
| HCA(MELLANOX, 0x675a), /* MT25458 ConnectX EN 10GBASE-T+Gen2 10GigE */ |
| HCA(MELLANOX, 0x6764), /* MT26468 ConnectX EN 10GigE PCIe gen2*/ |
| HCA(MELLANOX, 0x6746), /* MT26438 ConnectX EN 40GigE PCIe gen2 5GT/s */ |
| HCA(MELLANOX, 0x676e), /* MT26478 ConnectX2 40GigE PCIe gen2 */ |
| HCA(MELLANOX, 0x1002), /* MT25400 Family [ConnectX-2 Virtual Function] */ |
| HCA(MELLANOX, 0x1003), /* MT27500 Family [ConnectX-3] */ |
| HCA(MELLANOX, 0x1004), /* MT27500 Family [ConnectX-3 Virtual Function] */ |
| HCA(MELLANOX, 0x1005), /* MT27510 Family */ |
| HCA(MELLANOX, 0x1006), /* MT27511 Family */ |
| HCA(MELLANOX, 0x1007), /* MT27520 Family */ |
| HCA(MELLANOX, 0x1008), /* MT27521 Family */ |
| HCA(MELLANOX, 0x1009), /* MT27530 Family */ |
| HCA(MELLANOX, 0x100a), /* MT27531 Family */ |
| HCA(MELLANOX, 0x100b), /* MT27540 Family */ |
| HCA(MELLANOX, 0x100c), /* MT27541 Family */ |
| HCA(MELLANOX, 0x100d), /* MT27550 Family */ |
| HCA(MELLANOX, 0x100e), /* MT27551 Family */ |
| HCA(MELLANOX, 0x100f), /* MT27560 Family */ |
| HCA(MELLANOX, 0x1010), /* MT27561 Family */ |
| }; |
| |
| static struct ibv_context_ops mlx4_ctx_ops = { |
| .query_device = mlx4_query_device, |
| .query_port = mlx4_query_port, |
| .alloc_pd = mlx4_alloc_pd, |
| .dealloc_pd = mlx4_free_pd, |
| .reg_mr = mlx4_reg_mr, |
| .dereg_mr = mlx4_dereg_mr, |
| .create_cq = mlx4_create_cq, |
| .poll_cq = mlx4_poll_cq, |
| .req_notify_cq = mlx4_arm_cq, |
| .cq_event = mlx4_cq_event, |
| .resize_cq = mlx4_resize_cq, |
| .destroy_cq = mlx4_destroy_cq, |
| .create_srq = mlx4_create_srq, |
| .modify_srq = mlx4_modify_srq, |
| .query_srq = mlx4_query_srq, |
| .destroy_srq = mlx4_destroy_srq, |
| .post_srq_recv = mlx4_post_srq_recv, |
| .create_qp = mlx4_create_qp, |
| .query_qp = mlx4_query_qp, |
| .modify_qp = mlx4_modify_qp, |
| .destroy_qp = mlx4_destroy_qp, |
| .post_send = mlx4_post_send, |
| .post_recv = mlx4_post_recv, |
| .create_ah = mlx4_create_ah, |
| .destroy_ah = mlx4_destroy_ah, |
| .attach_mcast = ibv_cmd_attach_mcast, |
| .detach_mcast = ibv_cmd_detach_mcast |
| }; |
| |
| static struct ibv_context *mlx4_alloc_context(struct ibv_device *ibdev, int cmd_fd) |
| { |
| struct mlx4_context *context; |
| struct ibv_get_context cmd; |
| struct mlx4_alloc_ucontext_resp resp; |
| int i; |
| struct mlx4_alloc_ucontext_resp_v3 resp_v3; |
| __u16 bf_reg_size; |
| struct mlx4_device *dev = to_mdev(ibdev); |
| |
| context = calloc(1, sizeof *context); |
| if (!context) |
| return NULL; |
| |
| context->ibv_ctx.cmd_fd = cmd_fd; |
| |
| if (dev->abi_version <= MLX4_UVERBS_NO_DEV_CAPS_ABI_VERSION) { |
| if (ibv_cmd_get_context(&context->ibv_ctx, &cmd, sizeof cmd, |
| &resp_v3.ibv_resp, sizeof resp_v3)) |
| goto err_free; |
| |
| context->num_qps = resp_v3.qp_tab_size; |
| bf_reg_size = resp_v3.bf_reg_size; |
| context->cqe_size = sizeof (struct mlx4_cqe); |
| } else { |
| if (ibv_cmd_get_context(&context->ibv_ctx, &cmd, sizeof cmd, |
| &resp.ibv_resp, sizeof resp)) |
| goto err_free; |
| |
| context->num_qps = resp.qp_tab_size; |
| bf_reg_size = resp.bf_reg_size; |
| if (resp.dev_caps & MLX4_USER_DEV_CAP_64B_CQE) |
| context->cqe_size = resp.cqe_size; |
| else |
| context->cqe_size = sizeof (struct mlx4_cqe); |
| } |
| |
| context->qp_table_shift = ffs(context->num_qps) - 1 - MLX4_QP_TABLE_BITS; |
| context->qp_table_mask = (1 << context->qp_table_shift) - 1; |
| |
| pthread_mutex_init(&context->qp_table_mutex, NULL); |
| for (i = 0; i < MLX4_QP_TABLE_SIZE; ++i) |
| context->qp_table[i].refcnt = 0; |
| |
| for (i = 0; i < MLX4_NUM_DB_TYPE; ++i) |
| context->db_list[i] = NULL; |
| |
| pthread_mutex_init(&context->db_list_mutex, NULL); |
| |
| context->uar = mmap(NULL, to_mdev(ibdev)->page_size, PROT_WRITE, |
| MAP_SHARED, cmd_fd, 0); |
| if (context->uar == MAP_FAILED) |
| goto err_free; |
| |
| if (bf_reg_size) { |
| context->bf_page = mmap(NULL, to_mdev(ibdev)->page_size, |
| PROT_WRITE, MAP_SHARED, cmd_fd, |
| to_mdev(ibdev)->page_size); |
| if (context->bf_page == MAP_FAILED) { |
| fprintf(stderr, PFX "Warning: BlueFlame available, " |
| "but failed to mmap() BlueFlame page.\n"); |
| context->bf_page = NULL; |
| context->bf_buf_size = 0; |
| } else { |
| context->bf_buf_size = bf_reg_size / 2; |
| context->bf_offset = 0; |
| pthread_spin_init(&context->bf_lock, PTHREAD_PROCESS_PRIVATE); |
| } |
| } else { |
| context->bf_page = NULL; |
| context->bf_buf_size = 0; |
| } |
| |
| pthread_spin_init(&context->uar_lock, PTHREAD_PROCESS_PRIVATE); |
| |
| context->ibv_ctx.ops = mlx4_ctx_ops; |
| |
| return &context->ibv_ctx; |
| |
| err_free: |
| free(context); |
| return NULL; |
| } |
| |
| static void mlx4_free_context(struct ibv_context *ibctx) |
| { |
| struct mlx4_context *context = to_mctx(ibctx); |
| |
| munmap(context->uar, to_mdev(ibctx->device)->page_size); |
| if (context->bf_page) |
| munmap(context->bf_page, to_mdev(ibctx->device)->page_size); |
| free(context); |
| } |
| |
| static struct ibv_device_ops mlx4_dev_ops = { |
| .alloc_context = mlx4_alloc_context, |
| .free_context = mlx4_free_context |
| }; |
| |
| static struct ibv_device *mlx4_driver_init(const char *uverbs_sys_path, int abi_version) |
| { |
| char value[8]; |
| struct mlx4_device *dev; |
| unsigned vendor, device; |
| int i; |
| |
| if (ibv_read_sysfs_file(uverbs_sys_path, "device/vendor", |
| value, sizeof value) < 0) |
| return NULL; |
| vendor = strtol(value, NULL, 16); |
| |
| if (ibv_read_sysfs_file(uverbs_sys_path, "device/device", |
| value, sizeof value) < 0) |
| return NULL; |
| device = strtol(value, NULL, 16); |
| |
| for (i = 0; i < sizeof hca_table / sizeof hca_table[0]; ++i) |
| if (vendor == hca_table[i].vendor && |
| device == hca_table[i].device) |
| goto found; |
| |
| return NULL; |
| |
| found: |
| if (abi_version < MLX4_UVERBS_MIN_ABI_VERSION || |
| abi_version > MLX4_UVERBS_MAX_ABI_VERSION) { |
| fprintf(stderr, PFX "Fatal: ABI version %d of %s is not supported " |
| "(min supported %d, max supported %d)\n", |
| abi_version, uverbs_sys_path, |
| MLX4_UVERBS_MIN_ABI_VERSION, |
| MLX4_UVERBS_MAX_ABI_VERSION); |
| return NULL; |
| } |
| |
| dev = malloc(sizeof *dev); |
| if (!dev) { |
| fprintf(stderr, PFX "Fatal: couldn't allocate device for %s\n", |
| uverbs_sys_path); |
| return NULL; |
| } |
| |
| dev->ibv_dev.ops = mlx4_dev_ops; |
| dev->page_size = sysconf(_SC_PAGESIZE); |
| dev->abi_version = abi_version; |
| |
| return &dev->ibv_dev; |
| } |
| |
| #ifdef HAVE_IBV_REGISTER_DRIVER |
| static __attribute__((constructor)) void mlx4_register_driver(void) |
| { |
| ibv_register_driver("mlx4", mlx4_driver_init); |
| } |
| #else |
| /* |
| * Export the old libsysfs sysfs_class_device-based driver entry point |
| * if libibverbs does not export an ibv_register_driver() function. |
| */ |
| struct ibv_device *openib_driver_init(struct sysfs_class_device *sysdev) |
| { |
| int abi_version = 0; |
| char value[8]; |
| |
| if (ibv_read_sysfs_file(sysdev->path, "abi_version", |
| value, sizeof value) > 0) |
| abi_ver = strtol(value, NULL, 10); |
| |
| return mlx4_driver_init(sysdev->path, abi_version); |
| } |
| #endif /* HAVE_IBV_REGISTER_DRIVER */ |