580 lines
15 KiB
C
580 lines
15 KiB
C
/*
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* Copyright (c) 2006-2016 Chelsio, Inc. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <config.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <errno.h>
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#include <sys/mman.h>
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#include <pthread.h>
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#include <string.h>
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#include <signal.h>
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#include <stdbool.h>
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#include "libcxgb4.h"
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#include "cxgb4-abi.h"
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#define PCI_VENDOR_ID_CHELSIO 0x1425
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/*
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* Macros needed to support the PCI Device ID Table ...
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*/
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#define CH_PCI_DEVICE_ID_TABLE_DEFINE_BEGIN \
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static struct { \
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unsigned vendor; \
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unsigned device; \
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} hca_table[] = {
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#define CH_PCI_DEVICE_ID_FUNCTION \
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0x4
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#define CH_PCI_ID_TABLE_ENTRY(__DeviceID) \
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{ \
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.vendor = PCI_VENDOR_ID_CHELSIO, \
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.device = (__DeviceID), \
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}
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#define CH_PCI_DEVICE_ID_TABLE_DEFINE_END \
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}
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#include "t4_chip_type.h"
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#include "t4_pci_id_tbl.h"
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unsigned long c4iw_page_size;
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unsigned long c4iw_page_shift;
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unsigned long c4iw_page_mask;
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int ma_wr;
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int t5_en_wc = 1;
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static TAILQ_HEAD(,c4iw_dev) devices = TAILQ_HEAD_INITIALIZER(devices);
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static struct ibv_context_ops c4iw_ctx_ops = {
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.query_device = c4iw_query_device,
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.query_port = c4iw_query_port,
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.alloc_pd = c4iw_alloc_pd,
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.dealloc_pd = c4iw_free_pd,
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.reg_mr = c4iw_reg_mr,
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.dereg_mr = c4iw_dereg_mr,
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.create_cq = c4iw_create_cq,
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.resize_cq = c4iw_resize_cq,
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.destroy_cq = c4iw_destroy_cq,
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.create_srq = c4iw_create_srq,
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.modify_srq = c4iw_modify_srq,
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.destroy_srq = c4iw_destroy_srq,
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.create_qp = c4iw_create_qp,
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.modify_qp = c4iw_modify_qp,
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.destroy_qp = c4iw_destroy_qp,
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.query_qp = c4iw_query_qp,
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.create_ah = c4iw_create_ah,
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.destroy_ah = c4iw_destroy_ah,
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.attach_mcast = c4iw_attach_mcast,
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.detach_mcast = c4iw_detach_mcast,
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.post_srq_recv = c4iw_post_srq_recv,
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.req_notify_cq = c4iw_arm_cq,
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};
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static struct ibv_context *c4iw_alloc_context(struct ibv_device *ibdev,
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int cmd_fd)
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{
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struct c4iw_context *context;
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struct ibv_get_context cmd;
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struct c4iw_alloc_ucontext_resp resp;
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struct c4iw_dev *rhp = to_c4iw_dev(ibdev);
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struct ibv_query_device qcmd;
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uint64_t raw_fw_ver;
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struct ibv_device_attr attr;
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context = malloc(sizeof *context);
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if (!context)
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return NULL;
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memset(context, 0, sizeof *context);
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context->ibv_ctx.cmd_fd = cmd_fd;
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resp.status_page_size = 0;
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resp.reserved = 0;
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if (ibv_cmd_get_context(&context->ibv_ctx, &cmd, sizeof cmd,
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&resp.ibv_resp, sizeof resp))
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goto err_free;
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if (resp.reserved)
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PDBG("%s c4iw_alloc_ucontext_resp reserved field modified by kernel\n",
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__FUNCTION__);
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context->status_page_size = resp.status_page_size;
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if (resp.status_page_size) {
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context->status_page = mmap(NULL, resp.status_page_size,
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PROT_READ, MAP_SHARED, cmd_fd,
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resp.status_page_key);
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if (context->status_page == MAP_FAILED)
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goto err_free;
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}
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context->ibv_ctx.device = ibdev;
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context->ibv_ctx.ops = c4iw_ctx_ops;
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switch (rhp->chip_version) {
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case CHELSIO_T6:
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PDBG("%s T6/T5/T4 device\n", __FUNCTION__);
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case CHELSIO_T5:
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PDBG("%s T5/T4 device\n", __FUNCTION__);
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case CHELSIO_T4:
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PDBG("%s T4 device\n", __FUNCTION__);
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context->ibv_ctx.ops.async_event = c4iw_async_event;
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context->ibv_ctx.ops.post_send = c4iw_post_send;
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context->ibv_ctx.ops.post_recv = c4iw_post_receive;
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context->ibv_ctx.ops.poll_cq = c4iw_poll_cq;
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context->ibv_ctx.ops.req_notify_cq = c4iw_arm_cq;
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break;
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default:
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PDBG("%s unknown hca type %d\n", __FUNCTION__,
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rhp->chip_version);
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goto err_unmap;
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break;
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}
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if (!rhp->mmid2ptr) {
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int ret;
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ret = ibv_cmd_query_device(&context->ibv_ctx, &attr, &raw_fw_ver, &qcmd,
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sizeof qcmd);
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if (ret)
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goto err_unmap;
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rhp->max_mr = attr.max_mr;
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rhp->mmid2ptr = calloc(attr.max_mr, sizeof(void *));
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if (!rhp->mmid2ptr) {
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goto err_unmap;
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}
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if (rhp->abi_version < 3) {
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fprintf(stderr, "Warning: iw_cxgb4 driver is of older version"
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" than libcxgb4:: %d\n", rhp->abi_version);
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rhp->max_qp = T4_QID_BASE + attr.max_qp;
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} else {
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rhp->max_qp = context->status_page->qp_start +
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context->status_page->qp_size;
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}
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rhp->qpid2ptr = calloc(rhp->max_qp, sizeof(void *));
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if (!rhp->qpid2ptr) {
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goto err_unmap;
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}
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if (rhp->abi_version < 3)
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rhp->max_cq = T4_QID_BASE + attr.max_cq;
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else
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rhp->max_cq = context->status_page->cq_start +
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context->status_page->cq_size;
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rhp->cqid2ptr = calloc(rhp->max_cq, sizeof(void *));
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if (!rhp->cqid2ptr)
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goto err_unmap;
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/* Disable userspace WC if architecture/adapter does not
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* support WC.
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* Note: To forcefully disable WC in kernel driver use the
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* loader tunable "hw.cxl.write_combine=0"
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*/
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if (t5_en_wc && !context->status_page->wc_supported) {
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fprintf(stderr, "iw_cxgb4 driver doesn't support Write "
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"Combine, so regular DB writes will be used\n");
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t5_en_wc = 0;
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}
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}
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return &context->ibv_ctx;
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err_unmap:
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munmap(context->status_page, context->status_page_size);
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err_free:
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if (rhp->cqid2ptr)
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free(rhp->cqid2ptr);
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if (rhp->qpid2ptr)
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free(rhp->cqid2ptr);
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if (rhp->mmid2ptr)
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free(rhp->cqid2ptr);
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free(context);
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return NULL;
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}
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static void c4iw_free_context(struct ibv_context *ibctx)
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{
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struct c4iw_context *context = to_c4iw_context(ibctx);
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if (context->status_page_size)
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munmap(context->status_page, context->status_page_size);
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free(context);
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}
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static struct verbs_device_ops c4iw_dev_ops = {
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.alloc_context = c4iw_alloc_context,
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.free_context = c4iw_free_context
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};
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#ifdef STALL_DETECTION
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int stall_to;
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static void dump_cq(struct c4iw_cq *chp)
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{
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int i;
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fprintf(stderr,
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"CQ: %p id %u queue %p cidx 0x%08x sw_queue %p sw_cidx %d sw_pidx %d sw_in_use %d depth %u error %u gen %d "
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"cidx_inc %d bits_type_ts %016" PRIx64 " notempty %d\n", chp,
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chp->cq.cqid, chp->cq.queue, chp->cq.cidx,
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chp->cq.sw_queue, chp->cq.sw_cidx, chp->cq.sw_pidx, chp->cq.sw_in_use,
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chp->cq.size, chp->cq.error, chp->cq.gen, chp->cq.cidx_inc, be64toh(chp->cq.bits_type_ts),
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t4_cq_notempty(&chp->cq));
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for (i=0; i < chp->cq.size; i++) {
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u64 *p = (u64 *)(chp->cq.queue + i);
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fprintf(stderr, "%02x: %016" PRIx64 " %016" PRIx64, i, be64toh(p[0]), be64toh(p[1]));
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if (i == chp->cq.cidx)
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fprintf(stderr, " <-- cidx\n");
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else
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fprintf(stderr, "\n");
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p+= 2;
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fprintf(stderr, "%02x: %016" PRIx64 " %016" PRIx64 "\n", i, be64toh(p[0]), be64toh(p[1]));
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p+= 2;
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fprintf(stderr, "%02x: %016" PRIx64 " %016" PRIx64 "\n", i, be64toh(p[0]), be64toh(p[1]));
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p+= 2;
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fprintf(stderr, "%02x: %016" PRIx64 " %016" PRIx64 "\n", i, be64toh(p[0]), be64toh(p[1]));
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p+= 2;
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}
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}
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static void dump_qp(struct c4iw_qp *qhp)
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{
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int i;
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int j;
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struct t4_swsqe *swsqe;
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struct t4_swrqe *swrqe;
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u16 cidx, pidx;
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u64 *p;
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fprintf(stderr,
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"QP: %p id %u error %d flushed %d qid_mask 0x%x\n"
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" SQ: id %u queue %p sw_queue %p cidx %u pidx %u in_use %u wq_pidx %u depth %u flags 0x%x flush_cidx %d\n"
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" RQ: id %u queue %p sw_queue %p cidx %u pidx %u in_use %u depth %u\n",
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qhp,
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qhp->wq.sq.qid,
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qhp->wq.error,
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qhp->wq.flushed,
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qhp->wq.qid_mask,
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qhp->wq.sq.qid,
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qhp->wq.sq.queue,
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qhp->wq.sq.sw_sq,
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qhp->wq.sq.cidx,
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qhp->wq.sq.pidx,
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qhp->wq.sq.in_use,
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qhp->wq.sq.wq_pidx,
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qhp->wq.sq.size,
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qhp->wq.sq.flags,
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qhp->wq.sq.flush_cidx,
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qhp->wq.rq.qid,
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qhp->wq.rq.queue,
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qhp->wq.rq.sw_rq,
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qhp->wq.rq.cidx,
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qhp->wq.rq.pidx,
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qhp->wq.rq.in_use,
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qhp->wq.rq.size);
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cidx = qhp->wq.sq.cidx;
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pidx = qhp->wq.sq.pidx;
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if (cidx != pidx)
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fprintf(stderr, "SQ: \n");
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while (cidx != pidx) {
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swsqe = &qhp->wq.sq.sw_sq[cidx];
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fprintf(stderr, "%04u: wr_id %016" PRIx64
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" sq_wptr %08x read_len %u opcode 0x%x "
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"complete %u signaled %u cqe %016" PRIx64 " %016" PRIx64 " %016" PRIx64 " %016" PRIx64 "\n",
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cidx,
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swsqe->wr_id,
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swsqe->idx,
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swsqe->read_len,
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swsqe->opcode,
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swsqe->complete,
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swsqe->signaled,
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htobe64(((uint64_t *)&swsqe->cqe)[0]),
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htobe64(((uint64_t *)&swsqe->cqe)[1]),
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htobe64(((uint64_t *)&swsqe->cqe)[2]),
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htobe64(((uint64_t *)&swsqe->cqe)[3]));
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if (++cidx == qhp->wq.sq.size)
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cidx = 0;
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}
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fprintf(stderr, "SQ WQ: \n");
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p = (u64 *)qhp->wq.sq.queue;
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for (i=0; i < qhp->wq.sq.size * T4_SQ_NUM_SLOTS; i++) {
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for (j=0; j < T4_EQ_ENTRY_SIZE / 16; j++) {
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fprintf(stderr, "%04u %016" PRIx64 " %016" PRIx64 " ",
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i, be64toh(p[0]), be64toh(p[1]));
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if (j == 0 && i == qhp->wq.sq.wq_pidx)
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fprintf(stderr, " <-- pidx");
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fprintf(stderr, "\n");
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p += 2;
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}
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}
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cidx = qhp->wq.rq.cidx;
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pidx = qhp->wq.rq.pidx;
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if (cidx != pidx)
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fprintf(stderr, "RQ: \n");
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while (cidx != pidx) {
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swrqe = &qhp->wq.rq.sw_rq[cidx];
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fprintf(stderr, "%04u: wr_id %016" PRIx64 "\n",
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cidx,
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swrqe->wr_id );
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if (++cidx == qhp->wq.rq.size)
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cidx = 0;
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}
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fprintf(stderr, "RQ WQ: \n");
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p = (u64 *)qhp->wq.rq.queue;
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for (i=0; i < qhp->wq.rq.size * T4_RQ_NUM_SLOTS; i++) {
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for (j=0; j < T4_EQ_ENTRY_SIZE / 16; j++) {
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fprintf(stderr, "%04u %016" PRIx64 " %016" PRIx64 " ",
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i, be64toh(p[0]), be64toh(p[1]));
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if (j == 0 && i == qhp->wq.rq.pidx)
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fprintf(stderr, " <-- pidx");
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if (j == 0 && i == qhp->wq.rq.cidx)
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fprintf(stderr, " <-- cidx");
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fprintf(stderr, "\n");
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p+=2;
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}
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}
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}
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void dump_state(void)
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{
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struct c4iw_dev *dev;
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int i;
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fprintf(stderr, "STALL DETECTED:\n");
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TAILQ_FOREACH(dev, &devices, list) {
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//pthread_spin_lock(&dev->lock);
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fprintf(stderr, "Device %s\n", dev->ibv_dev.name);
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for (i=0; i < dev->max_cq; i++) {
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if (dev->cqid2ptr[i]) {
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struct c4iw_cq *chp = dev->cqid2ptr[i];
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//pthread_spin_lock(&chp->lock);
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dump_cq(chp);
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//pthread_spin_unlock(&chp->lock);
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}
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}
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for (i=0; i < dev->max_qp; i++) {
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if (dev->qpid2ptr[i]) {
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struct c4iw_qp *qhp = dev->qpid2ptr[i];
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//pthread_spin_lock(&qhp->lock);
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dump_qp(qhp);
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//pthread_spin_unlock(&qhp->lock);
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}
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}
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//pthread_spin_unlock(&dev->lock);
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}
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fprintf(stderr, "DUMP COMPLETE:\n");
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fflush(stderr);
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}
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#endif /* end of STALL_DETECTION */
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/*
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* c4iw_abi_version is used to store ABI for iw_cxgb4 so the user mode library
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* can know if the driver supports the kernel mode db ringing.
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*/
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int c4iw_abi_version = 1;
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static struct verbs_device *cxgb4_driver_init(const char *uverbs_sys_path,
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int abi_version)
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{
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char devstr[IBV_SYSFS_PATH_MAX], ibdev[16], value[128], *cp;
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char dev_str[IBV_SYSFS_PATH_MAX];
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struct c4iw_dev *dev;
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unsigned vendor, device, fw_maj, fw_min;
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int i;
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char devnum;
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char ib_param[16];
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#ifndef __linux__
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if (ibv_read_sysfs_file(uverbs_sys_path, "ibdev",
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ibdev, sizeof ibdev) < 0)
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return NULL;
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devnum = atoi(&ibdev[5]);
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if (ibdev[0] == 't' && ibdev[1] >= '4' && ibdev[1] <= '6' &&
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strstr(&ibdev[2], "nex") && devnum >= 0) {
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snprintf(dev_str, sizeof(dev_str), "/dev/t%cnex/%d", ibdev[1],
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devnum);
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} else
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return NULL;
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if (ibv_read_sysfs_file(dev_str, "\%pnpinfo", value, sizeof value) < 0)
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return NULL;
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else {
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if (strstr(value, "vendor=")) {
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strncpy(ib_param, strstr(value, "vendor=") +
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strlen("vendor="), 6);
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sscanf(ib_param, "%i", &vendor);
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}
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|
|
if (strstr(value, "device=")) {
|
|
strncpy(ib_param, strstr(value, "device=") +
|
|
strlen("device="), 6);
|
|
sscanf(ib_param, "%i", &device);
|
|
}
|
|
}
|
|
#else
|
|
if (ibv_read_sysfs_file(uverbs_sys_path, "device/vendor",
|
|
value, sizeof value) < 0)
|
|
return NULL;
|
|
sscanf(value, "%i", &vendor);
|
|
|
|
if (ibv_read_sysfs_file(uverbs_sys_path, "device/device",
|
|
value, sizeof value) < 0)
|
|
return NULL;
|
|
sscanf(value, "%i", &device);
|
|
#endif
|
|
|
|
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:
|
|
c4iw_abi_version = abi_version;
|
|
|
|
#ifndef __linux__
|
|
if (ibv_read_sysfs_file(dev_str, "firmware_version",
|
|
value, sizeof value) < 0)
|
|
return NULL;
|
|
#else
|
|
/*
|
|
* Verify that the firmware major number matches. Major number
|
|
* mismatches are fatal. Minor number mismatches are tolerated.
|
|
*/
|
|
if (ibv_read_sysfs_file(uverbs_sys_path, "ibdev",
|
|
ibdev, sizeof ibdev) < 0)
|
|
return NULL;
|
|
|
|
memset(devstr, 0, sizeof devstr);
|
|
snprintf(devstr, sizeof devstr, "%s/class/infiniband/%s",
|
|
ibv_get_sysfs_path(), ibdev);
|
|
if (ibv_read_sysfs_file(devstr, "fw_ver", value, sizeof value) < 0)
|
|
return NULL;
|
|
#endif
|
|
|
|
cp = strtok(value+1, ".");
|
|
sscanf(cp, "%i", &fw_maj);
|
|
cp = strtok(NULL, ".");
|
|
sscanf(cp, "%i", &fw_min);
|
|
|
|
if ((signed int)fw_maj < FW_MAJ) {
|
|
fprintf(stderr, "libcxgb4: Fatal firmware version mismatch. "
|
|
"Firmware major number is %u and libcxgb4 needs %u.\n",
|
|
fw_maj, FW_MAJ);
|
|
fflush(stderr);
|
|
return NULL;
|
|
}
|
|
|
|
DBGLOG("libcxgb4");
|
|
|
|
if ((signed int)fw_min < FW_MIN) {
|
|
PDBG("libcxgb4: non-fatal firmware version mismatch. "
|
|
"Firmware minor number is %u and libcxgb4 needs %u.\n",
|
|
fw_min, FW_MIN);
|
|
fflush(stderr);
|
|
}
|
|
|
|
PDBG("%s found vendor %d device %d type %d\n",
|
|
__FUNCTION__, vendor, device, CHELSIO_CHIP_VERSION(hca_table[i].device >> 8));
|
|
|
|
dev = calloc(1, sizeof *dev);
|
|
if (!dev) {
|
|
return NULL;
|
|
}
|
|
|
|
pthread_spin_init(&dev->lock, PTHREAD_PROCESS_PRIVATE);
|
|
dev->ibv_dev.ops = &c4iw_dev_ops;
|
|
dev->chip_version = CHELSIO_CHIP_VERSION(hca_table[i].device >> 8);
|
|
dev->abi_version = abi_version;
|
|
|
|
PDBG("%s device claimed\n", __FUNCTION__);
|
|
TAILQ_INSERT_TAIL(&devices, dev, list);
|
|
#ifdef STALL_DETECTION
|
|
{
|
|
char *c = getenv("CXGB4_STALL_TIMEOUT");
|
|
if (c) {
|
|
stall_to = strtol(c, NULL, 0);
|
|
if (errno || stall_to < 0)
|
|
stall_to = 0;
|
|
}
|
|
}
|
|
#endif
|
|
{
|
|
char *c = getenv("CXGB4_MA_WR");
|
|
if (c) {
|
|
ma_wr = strtol(c, NULL, 0);
|
|
if (ma_wr != 1)
|
|
ma_wr = 0;
|
|
}
|
|
}
|
|
{
|
|
char *c = getenv("T5_ENABLE_WC");
|
|
if (c) {
|
|
t5_en_wc = strtol(c, NULL, 0);
|
|
if (t5_en_wc != 1)
|
|
t5_en_wc = 0;
|
|
}
|
|
}
|
|
|
|
return &dev->ibv_dev;
|
|
}
|
|
|
|
static __attribute__((constructor)) void cxgb4_register_driver(void)
|
|
{
|
|
c4iw_page_size = sysconf(_SC_PAGESIZE);
|
|
c4iw_page_shift = long_log2(c4iw_page_size);
|
|
c4iw_page_mask = ~(c4iw_page_size - 1);
|
|
verbs_register_driver("cxgb4", cxgb4_driver_init);
|
|
}
|
|
|
|
#ifdef STATS
|
|
void __attribute__ ((destructor)) cs_fini(void);
|
|
void __attribute__ ((destructor)) cs_fini(void)
|
|
{
|
|
syslog(LOG_NOTICE, "cxgb4 stats - sends %lu recv %lu read %lu "
|
|
"write %lu arm %lu cqe %lu mr %lu qp %lu cq %lu\n",
|
|
c4iw_stats.send, c4iw_stats.recv, c4iw_stats.read,
|
|
c4iw_stats.write, c4iw_stats.arm, c4iw_stats.cqe,
|
|
c4iw_stats.mr, c4iw_stats.qp, c4iw_stats.cq);
|
|
}
|
|
#endif
|