diff options
Diffstat (limited to 'contrib/ofed/libmlx4/mlx4.c')
| -rw-r--r-- | contrib/ofed/libmlx4/mlx4.c | 327 |
1 files changed, 327 insertions, 0 deletions
diff --git a/contrib/ofed/libmlx4/mlx4.c b/contrib/ofed/libmlx4/mlx4.c new file mode 100644 index 000000000000..229c2670b5ed --- /dev/null +++ b/contrib/ofed/libmlx4/mlx4.c @@ -0,0 +1,327 @@ +/* + * 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. + */ + +#include <config.h> + +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <errno.h> +#include <sys/mman.h> +#include <pthread.h> +#include <string.h> + +#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 } + +static 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, + .rereg_mr = mlx4_rereg_mr, + .dereg_mr = mlx4_dereg_mr, + .alloc_mw = mlx4_alloc_mw, + .dealloc_mw = mlx4_dealloc_mw, + .bind_mw = mlx4_bind_mw, + .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 int mlx4_map_internal_clock(struct mlx4_device *mdev, + struct ibv_context *ibv_ctx) +{ + struct mlx4_context *context = to_mctx(ibv_ctx); + void *hca_clock_page; + + hca_clock_page = mmap(NULL, mdev->page_size, + PROT_READ, MAP_SHARED, ibv_ctx->cmd_fd, + mdev->page_size * 3); + + if (hca_clock_page == MAP_FAILED) { + fprintf(stderr, PFX + "Warning: Timestamp available,\n" + "but failed to mmap() hca core clock page.\n"); + return -1; + } + + context->hca_core_clock = hca_clock_page + + (context->core_clock.offset & (mdev->page_size - 1)); + return 0; +} + +static int mlx4_init_context(struct verbs_device *v_device, + struct ibv_context *ibv_ctx, 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(&v_device->device); + struct verbs_context *verbs_ctx = verbs_get_ctx(ibv_ctx); + struct ibv_device_attr_ex dev_attrs; + + /* memory footprint of mlx4_context and verbs_context share + * struct ibv_context. + */ + context = to_mctx(ibv_ctx); + ibv_ctx->cmd_fd = cmd_fd; + + if (dev->abi_version <= MLX4_UVERBS_NO_DEV_CAPS_ABI_VERSION) { + if (ibv_cmd_get_context(ibv_ctx, &cmd, sizeof cmd, + &resp_v3.ibv_resp, sizeof resp_v3)) + return errno; + + 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(ibv_ctx, &cmd, sizeof cmd, + &resp.ibv_resp, sizeof resp)) + return errno; + + 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; + for (i = 0; i < MLX4_PORTS_NUM; ++i) + context->port_query_cache[i].valid = 0; + + 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; + + mlx4_init_xsrq_table(&context->xsrq_table, context->num_qps); + pthread_mutex_init(&context->db_list_mutex, NULL); + + context->uar = mmap(NULL, dev->page_size, PROT_WRITE, + MAP_SHARED, cmd_fd, 0); + if (context->uar == MAP_FAILED) + return errno; + + if (bf_reg_size) { + context->bf_page = mmap(NULL, dev->page_size, + PROT_WRITE, MAP_SHARED, cmd_fd, + dev->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); + ibv_ctx->ops = mlx4_ctx_ops; + + context->hca_core_clock = NULL; + memset(&dev_attrs, 0, sizeof(dev_attrs)); + if (!mlx4_query_device_ex(ibv_ctx, NULL, &dev_attrs, + sizeof(struct ibv_device_attr_ex))) { + context->max_qp_wr = dev_attrs.orig_attr.max_qp_wr; + context->max_sge = dev_attrs.orig_attr.max_sge; + if (context->core_clock.offset_valid) + mlx4_map_internal_clock(dev, ibv_ctx); + } + + verbs_ctx->has_comp_mask = VERBS_CONTEXT_XRCD | VERBS_CONTEXT_SRQ | + VERBS_CONTEXT_QP; + verbs_set_ctx_op(verbs_ctx, close_xrcd, mlx4_close_xrcd); + verbs_set_ctx_op(verbs_ctx, open_xrcd, mlx4_open_xrcd); + verbs_set_ctx_op(verbs_ctx, create_srq_ex, mlx4_create_srq_ex); + verbs_set_ctx_op(verbs_ctx, get_srq_num, verbs_get_srq_num); + verbs_set_ctx_op(verbs_ctx, create_qp_ex, mlx4_create_qp_ex); + verbs_set_ctx_op(verbs_ctx, open_qp, mlx4_open_qp); + verbs_set_ctx_op(verbs_ctx, ibv_create_flow, ibv_cmd_create_flow); + verbs_set_ctx_op(verbs_ctx, ibv_destroy_flow, ibv_cmd_destroy_flow); + verbs_set_ctx_op(verbs_ctx, create_cq_ex, mlx4_create_cq_ex); + verbs_set_ctx_op(verbs_ctx, query_device_ex, mlx4_query_device_ex); + verbs_set_ctx_op(verbs_ctx, query_rt_values, mlx4_query_rt_values); + + return 0; + +} + +static void mlx4_uninit_context(struct verbs_device *v_device, + struct ibv_context *ibv_ctx) +{ + struct mlx4_context *context = to_mctx(ibv_ctx); + + munmap(context->uar, to_mdev(&v_device->device)->page_size); + if (context->bf_page) + munmap(context->bf_page, to_mdev(&v_device->device)->page_size); + if (context->hca_core_clock) + munmap(context->hca_core_clock - context->core_clock.offset, + to_mdev(&v_device->device)->page_size); +} + +static struct verbs_device_ops mlx4_dev_ops = { + .init_context = mlx4_init_context, + .uninit_context = mlx4_uninit_context, +}; + +static struct verbs_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 = calloc(1, sizeof *dev); + if (!dev) { + fprintf(stderr, PFX "Fatal: couldn't allocate device for %s\n", + uverbs_sys_path); + return NULL; + } + + dev->page_size = sysconf(_SC_PAGESIZE); + dev->abi_version = abi_version; + + dev->verbs_dev.ops = &mlx4_dev_ops; + dev->verbs_dev.sz = sizeof(*dev); + dev->verbs_dev.size_of_context = + sizeof(struct mlx4_context) - sizeof(struct ibv_context); + + return &dev->verbs_dev; +} + +static __attribute__((constructor)) void mlx4_register_driver(void) +{ + verbs_register_driver("mlx4", mlx4_driver_init); +} |