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/*
* 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>
#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 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);
/* verbs_context should be used for new verbs
* struct verbs_context *verbs_ctx = verbs_get_ctx(ibv_ctx);
*/
/* 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;
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, 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;
/* New verbs should be added by using verbs_set_ctx_op */
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);
}
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.sz = sizeof(*dev);
dev->verbs_dev.size_of_context =
sizeof(struct mlx4_context) - sizeof(struct ibv_context);
/* mlx4_init_context will initialize provider calls */
dev->verbs_dev.init_context = mlx4_init_context;
dev->verbs_dev.uninit_context = mlx4_uninit_context;
return &dev->verbs_dev;
}
static __attribute__((constructor)) void mlx4_register_driver(void)
{
verbs_register_driver("mlx4", mlx4_driver_init);
}