LXR linux/drivers/net/ethernet/mellanox/mlx5/core/fw.c

   1/*
   2 * Copyright (c) 2013, Mellanox Technologies inc.  All rights reserved.
   3 *
   4 * This software is available to you under a choice of one of two
   5 * licenses.  You may choose to be licensed under the terms of the GNU
   6 * General Public License (GPL) Version 2, available from the file
   7 * COPYING in the main directory of this source tree, or the
   8 * OpenIB.org BSD license below:
   9 *
  10 *     Redistribution and use in source and binary forms, with or
  11 *     without modification, are permitted provided that the following
  12 *     conditions are met:
  13 *
  14 *      - Redistributions of source code must retain the above
  15 *        copyright notice, this list of conditions and the following
  16 *        disclaimer.
  17 *
  18 *      - Redistributions in binary form must reproduce the above
  19 *        copyright notice, this list of conditions and the following
  20 *        disclaimer in the documentation and/or other materials
  21 *        provided with the distribution.
  22 *
  23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30 * SOFTWARE.
  31 */
  32
  33#include <linux/mlx5/driver.h>
  34#include <linux/mlx5/cmd.h>
  35#include <linux/module.h>
  36#include "mlx5_core.h"
  37
  38int mlx5_cmd_query_adapter(struct mlx5_core_dev *dev)
  39{
  40        struct mlx5_cmd_query_adapter_mbox_out *out;
  41        struct mlx5_cmd_query_adapter_mbox_in in;
  42        int err;
  43
  44        out = kzalloc(sizeof(*out), GFP_KERNEL);
  45        if (!out)
  46                return -ENOMEM;
  47
  48        memset(&in, 0, sizeof(in));
  49        in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_QUERY_ADAPTER);
  50        err = mlx5_cmd_exec(dev, &in, sizeof(in), out, sizeof(*out));
  51        if (err)
  52                goto out_out;
  53
  54        if (out->hdr.status) {
  55                err = mlx5_cmd_status_to_err(&out->hdr);
  56                goto out_out;
  57        }
  58
  59        memcpy(dev->board_id, out->vsd_psid, sizeof(out->vsd_psid));
  60
  61out_out:
  62        kfree(out);
  63
  64        return err;
  65}
  66
  67int mlx5_cmd_query_hca_cap(struct mlx5_core_dev *dev,
  68                           struct mlx5_caps *caps)
  69{
  70        struct mlx5_cmd_query_hca_cap_mbox_out *out;
  71        struct mlx5_cmd_query_hca_cap_mbox_in in;
  72        struct mlx5_query_special_ctxs_mbox_out ctx_out;
  73        struct mlx5_query_special_ctxs_mbox_in ctx_in;
  74        int err;
  75        u16 t16;
  76
  77        out = kzalloc(sizeof(*out), GFP_KERNEL);
  78        if (!out)
  79                return -ENOMEM;
  80
  81        memset(&in, 0, sizeof(in));
  82        in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_QUERY_HCA_CAP);
  83        in.hdr.opmod  = cpu_to_be16(0x1);
  84        err = mlx5_cmd_exec(dev, &in, sizeof(in), out, sizeof(*out));
  85        if (err)
  86                goto out_out;
  87
  88        if (out->hdr.status) {
  89                err = mlx5_cmd_status_to_err(&out->hdr);
  90                goto out_out;
  91        }
  92
  93
  94        caps->log_max_eq = out->hca_cap.log_max_eq & 0xf;
  95        caps->max_cqes = 1 << out->hca_cap.log_max_cq_sz;
  96        caps->max_wqes = 1 << out->hca_cap.log_max_qp_sz;
  97        caps->max_sq_desc_sz = be16_to_cpu(out->hca_cap.max_desc_sz_sq);
  98        caps->max_rq_desc_sz = be16_to_cpu(out->hca_cap.max_desc_sz_rq);
  99        caps->flags = be64_to_cpu(out->hca_cap.flags);
 100        caps->stat_rate_support = be16_to_cpu(out->hca_cap.stat_rate_support);
 101        caps->log_max_msg = out->hca_cap.log_max_msg & 0x1f;
 102        caps->num_ports = out->hca_cap.num_ports & 0xf;
 103        caps->log_max_cq = out->hca_cap.log_max_cq & 0x1f;
 104        if (caps->num_ports > MLX5_MAX_PORTS) {
 105                mlx5_core_err(dev, "device has %d ports while the driver supports max %d ports\n",
 106                              caps->num_ports, MLX5_MAX_PORTS);
 107                err = -EINVAL;
 108                goto out_out;
 109        }
 110        caps->log_max_qp = out->hca_cap.log_max_qp & 0x1f;
 111        caps->log_max_mkey = out->hca_cap.log_max_mkey & 0x3f;
 112        caps->log_max_pd = out->hca_cap.log_max_pd & 0x1f;
 113        caps->log_max_srq = out->hca_cap.log_max_srqs & 0x1f;
 114        caps->local_ca_ack_delay = out->hca_cap.local_ca_ack_delay & 0x1f;
 115        caps->log_max_mcg = out->hca_cap.log_max_mcg;
 116        caps->max_qp_mcg = be32_to_cpu(out->hca_cap.max_qp_mcg) & 0xffffff;
 117        caps->max_ra_res_qp = 1 << (out->hca_cap.log_max_ra_res_qp & 0x3f);
 118        caps->max_ra_req_qp = 1 << (out->hca_cap.log_max_ra_req_qp & 0x3f);
 119        caps->max_srq_wqes = 1 << out->hca_cap.log_max_srq_sz;
 120        t16 = be16_to_cpu(out->hca_cap.bf_log_bf_reg_size);
 121        if (t16 & 0x8000) {
 122                caps->bf_reg_size = 1 << (t16 & 0x1f);
 123                caps->bf_regs_per_page = MLX5_BF_REGS_PER_PAGE;
 124        } else {
 125                caps->bf_reg_size = 0;
 126                caps->bf_regs_per_page = 0;
 127        }
 128        caps->min_page_sz = ~(u32)((1 << out->hca_cap.log_pg_sz) - 1);
 129
 130        memset(&ctx_in, 0, sizeof(ctx_in));
 131        memset(&ctx_out, 0, sizeof(ctx_out));
 132        ctx_in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_QUERY_SPECIAL_CONTEXTS);
 133        err = mlx5_cmd_exec(dev, &ctx_in, sizeof(ctx_in),
 134                                 &ctx_out, sizeof(ctx_out));
 135        if (err)
 136                goto out_out;
 137
 138        if (ctx_out.hdr.status)
 139                err = mlx5_cmd_status_to_err(&ctx_out.hdr);
 140
 141        caps->reserved_lkey = be32_to_cpu(ctx_out.reserved_lkey);
 142
 143out_out:
 144        kfree(out);
 145
 146        return err;
 147}
 148
 149int mlx5_cmd_init_hca(struct mlx5_core_dev *dev)
 150{
 151        struct mlx5_cmd_init_hca_mbox_in in;
 152        struct mlx5_cmd_init_hca_mbox_out out;
 153        int err;
 154
 155        memset(&in, 0, sizeof(in));
 156        memset(&out, 0, sizeof(out));
 157        in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_INIT_HCA);
 158        err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
 159        if (err)
 160                return err;
 161
 162        if (out.hdr.status)
 163                err = mlx5_cmd_status_to_err(&out.hdr);
 164
 165        return err;
 166}
 167
 168int mlx5_cmd_teardown_hca(struct mlx5_core_dev *dev)
 169{
 170        struct mlx5_cmd_teardown_hca_mbox_in in;
 171        struct mlx5_cmd_teardown_hca_mbox_out out;
 172        int err;
 173
 174        memset(&in, 0, sizeof(in));
 175        memset(&out, 0, sizeof(out));
 176        in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_TEARDOWN_HCA);
 177        err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
 178        if (err)
 179                return err;
 180
 181        if (out.hdr.status)
 182                err = mlx5_cmd_status_to_err(&out.hdr);
 183
 184        return err;
 185}
 186