1766 lines
41 KiB
C
1766 lines
41 KiB
C
/*
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* Copyright (c) 2013-2015, Mellanox Technologies. 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 <linux/highmem.h>
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#include <linux/module.h>
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#include <linux/errno.h>
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#include <linux/pci.h>
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#include <linux/dma-mapping.h>
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#include <linux/slab.h>
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#include <linux/delay.h>
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#include <linux/random.h>
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#include <linux/io-mapping.h>
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#include <linux/mlx5/driver.h>
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#include <linux/debugfs.h>
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#include "mlx5_core.h"
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enum {
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CMD_IF_REV = 5,
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};
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enum {
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CMD_MODE_POLLING,
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CMD_MODE_EVENTS
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};
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enum {
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NUM_LONG_LISTS = 2,
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NUM_MED_LISTS = 64,
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LONG_LIST_SIZE = (2ULL * 1024 * 1024 * 1024 / PAGE_SIZE) * 8 + 16 +
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MLX5_CMD_DATA_BLOCK_SIZE,
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MED_LIST_SIZE = 16 + MLX5_CMD_DATA_BLOCK_SIZE,
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};
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enum {
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MLX5_CMD_DELIVERY_STAT_OK = 0x0,
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MLX5_CMD_DELIVERY_STAT_SIGNAT_ERR = 0x1,
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MLX5_CMD_DELIVERY_STAT_TOK_ERR = 0x2,
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MLX5_CMD_DELIVERY_STAT_BAD_BLK_NUM_ERR = 0x3,
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MLX5_CMD_DELIVERY_STAT_OUT_PTR_ALIGN_ERR = 0x4,
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MLX5_CMD_DELIVERY_STAT_IN_PTR_ALIGN_ERR = 0x5,
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MLX5_CMD_DELIVERY_STAT_FW_ERR = 0x6,
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MLX5_CMD_DELIVERY_STAT_IN_LENGTH_ERR = 0x7,
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MLX5_CMD_DELIVERY_STAT_OUT_LENGTH_ERR = 0x8,
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MLX5_CMD_DELIVERY_STAT_RES_FLD_NOT_CLR_ERR = 0x9,
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MLX5_CMD_DELIVERY_STAT_CMD_DESCR_ERR = 0x10,
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};
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static struct mlx5_cmd_work_ent *alloc_cmd(struct mlx5_cmd *cmd,
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struct mlx5_cmd_msg *in,
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struct mlx5_cmd_msg *out,
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void *uout, int uout_size,
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mlx5_cmd_cbk_t cbk,
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void *context, int page_queue)
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{
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gfp_t alloc_flags = cbk ? GFP_ATOMIC : GFP_KERNEL;
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struct mlx5_cmd_work_ent *ent;
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ent = kzalloc(sizeof(*ent), alloc_flags);
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if (!ent)
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return ERR_PTR(-ENOMEM);
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ent->in = in;
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ent->out = out;
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ent->uout = uout;
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ent->uout_size = uout_size;
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ent->callback = cbk;
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ent->context = context;
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ent->cmd = cmd;
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ent->page_queue = page_queue;
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return ent;
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}
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static u8 alloc_token(struct mlx5_cmd *cmd)
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{
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u8 token;
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spin_lock(&cmd->token_lock);
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cmd->token++;
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if (cmd->token == 0)
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cmd->token++;
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token = cmd->token;
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spin_unlock(&cmd->token_lock);
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return token;
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}
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static int alloc_ent(struct mlx5_cmd *cmd)
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{
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unsigned long flags;
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int ret;
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spin_lock_irqsave(&cmd->alloc_lock, flags);
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ret = find_first_bit(&cmd->bitmask, cmd->max_reg_cmds);
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if (ret < cmd->max_reg_cmds)
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clear_bit(ret, &cmd->bitmask);
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spin_unlock_irqrestore(&cmd->alloc_lock, flags);
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return ret < cmd->max_reg_cmds ? ret : -ENOMEM;
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}
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static void free_ent(struct mlx5_cmd *cmd, int idx)
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{
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unsigned long flags;
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spin_lock_irqsave(&cmd->alloc_lock, flags);
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set_bit(idx, &cmd->bitmask);
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spin_unlock_irqrestore(&cmd->alloc_lock, flags);
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}
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static struct mlx5_cmd_layout *get_inst(struct mlx5_cmd *cmd, int idx)
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{
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return cmd->cmd_buf + (idx << cmd->log_stride);
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}
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static u8 xor8_buf(void *buf, int len)
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{
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u8 *ptr = buf;
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u8 sum = 0;
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int i;
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for (i = 0; i < len; i++)
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sum ^= ptr[i];
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return sum;
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}
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static int verify_block_sig(struct mlx5_cmd_prot_block *block)
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{
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if (xor8_buf(block->rsvd0, sizeof(*block) - sizeof(block->data) - 1) != 0xff)
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return -EINVAL;
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if (xor8_buf(block, sizeof(*block)) != 0xff)
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return -EINVAL;
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return 0;
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}
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static void calc_block_sig(struct mlx5_cmd_prot_block *block, u8 token,
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int csum)
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{
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block->token = token;
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if (csum) {
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block->ctrl_sig = ~xor8_buf(block->rsvd0, sizeof(*block) -
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sizeof(block->data) - 2);
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block->sig = ~xor8_buf(block, sizeof(*block) - 1);
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}
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}
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static void calc_chain_sig(struct mlx5_cmd_msg *msg, u8 token, int csum)
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{
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struct mlx5_cmd_mailbox *next = msg->next;
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while (next) {
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calc_block_sig(next->buf, token, csum);
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next = next->next;
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}
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}
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static void set_signature(struct mlx5_cmd_work_ent *ent, int csum)
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{
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ent->lay->sig = ~xor8_buf(ent->lay, sizeof(*ent->lay));
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calc_chain_sig(ent->in, ent->token, csum);
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calc_chain_sig(ent->out, ent->token, csum);
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}
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static void poll_timeout(struct mlx5_cmd_work_ent *ent)
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{
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unsigned long poll_end = jiffies + msecs_to_jiffies(MLX5_CMD_TIMEOUT_MSEC + 1000);
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u8 own;
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do {
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own = ent->lay->status_own;
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if (!(own & CMD_OWNER_HW)) {
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ent->ret = 0;
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return;
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}
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usleep_range(5000, 10000);
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} while (time_before(jiffies, poll_end));
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ent->ret = -ETIMEDOUT;
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}
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static void free_cmd(struct mlx5_cmd_work_ent *ent)
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{
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kfree(ent);
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}
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static int verify_signature(struct mlx5_cmd_work_ent *ent)
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{
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struct mlx5_cmd_mailbox *next = ent->out->next;
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int err;
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u8 sig;
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sig = xor8_buf(ent->lay, sizeof(*ent->lay));
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if (sig != 0xff)
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return -EINVAL;
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while (next) {
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err = verify_block_sig(next->buf);
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if (err)
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return err;
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next = next->next;
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}
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return 0;
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}
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static void dump_buf(void *buf, int size, int data_only, int offset)
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{
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__be32 *p = buf;
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int i;
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for (i = 0; i < size; i += 16) {
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pr_debug("%03x: %08x %08x %08x %08x\n", offset, be32_to_cpu(p[0]),
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be32_to_cpu(p[1]), be32_to_cpu(p[2]),
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be32_to_cpu(p[3]));
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p += 4;
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offset += 16;
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}
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if (!data_only)
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pr_debug("\n");
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}
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enum {
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MLX5_DRIVER_STATUS_ABORTED = 0xfe,
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MLX5_DRIVER_SYND = 0xbadd00de,
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};
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static int mlx5_internal_err_ret_value(struct mlx5_core_dev *dev, u16 op,
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u32 *synd, u8 *status)
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{
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*synd = 0;
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*status = 0;
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switch (op) {
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case MLX5_CMD_OP_TEARDOWN_HCA:
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case MLX5_CMD_OP_DISABLE_HCA:
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case MLX5_CMD_OP_MANAGE_PAGES:
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case MLX5_CMD_OP_DESTROY_MKEY:
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case MLX5_CMD_OP_DESTROY_EQ:
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case MLX5_CMD_OP_DESTROY_CQ:
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case MLX5_CMD_OP_DESTROY_QP:
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case MLX5_CMD_OP_DESTROY_PSV:
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case MLX5_CMD_OP_DESTROY_SRQ:
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case MLX5_CMD_OP_DESTROY_XRC_SRQ:
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case MLX5_CMD_OP_DESTROY_DCT:
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case MLX5_CMD_OP_DEALLOC_Q_COUNTER:
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case MLX5_CMD_OP_DEALLOC_PD:
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case MLX5_CMD_OP_DEALLOC_UAR:
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case MLX5_CMD_OP_DETTACH_FROM_MCG:
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case MLX5_CMD_OP_DEALLOC_XRCD:
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case MLX5_CMD_OP_DEALLOC_TRANSPORT_DOMAIN:
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case MLX5_CMD_OP_DELETE_VXLAN_UDP_DPORT:
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case MLX5_CMD_OP_DELETE_L2_TABLE_ENTRY:
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case MLX5_CMD_OP_DESTROY_TIR:
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case MLX5_CMD_OP_DESTROY_SQ:
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case MLX5_CMD_OP_DESTROY_RQ:
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case MLX5_CMD_OP_DESTROY_RMP:
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case MLX5_CMD_OP_DESTROY_TIS:
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case MLX5_CMD_OP_DESTROY_RQT:
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case MLX5_CMD_OP_DESTROY_FLOW_TABLE:
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case MLX5_CMD_OP_DESTROY_FLOW_GROUP:
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case MLX5_CMD_OP_DELETE_FLOW_TABLE_ENTRY:
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return MLX5_CMD_STAT_OK;
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case MLX5_CMD_OP_QUERY_HCA_CAP:
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case MLX5_CMD_OP_QUERY_ADAPTER:
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case MLX5_CMD_OP_INIT_HCA:
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case MLX5_CMD_OP_ENABLE_HCA:
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case MLX5_CMD_OP_QUERY_PAGES:
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case MLX5_CMD_OP_SET_HCA_CAP:
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case MLX5_CMD_OP_QUERY_ISSI:
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case MLX5_CMD_OP_SET_ISSI:
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case MLX5_CMD_OP_CREATE_MKEY:
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case MLX5_CMD_OP_QUERY_MKEY:
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case MLX5_CMD_OP_QUERY_SPECIAL_CONTEXTS:
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case MLX5_CMD_OP_PAGE_FAULT_RESUME:
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case MLX5_CMD_OP_CREATE_EQ:
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case MLX5_CMD_OP_QUERY_EQ:
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case MLX5_CMD_OP_GEN_EQE:
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case MLX5_CMD_OP_CREATE_CQ:
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case MLX5_CMD_OP_QUERY_CQ:
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case MLX5_CMD_OP_MODIFY_CQ:
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case MLX5_CMD_OP_CREATE_QP:
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case MLX5_CMD_OP_RST2INIT_QP:
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case MLX5_CMD_OP_INIT2RTR_QP:
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case MLX5_CMD_OP_RTR2RTS_QP:
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case MLX5_CMD_OP_RTS2RTS_QP:
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case MLX5_CMD_OP_SQERR2RTS_QP:
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case MLX5_CMD_OP_2ERR_QP:
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case MLX5_CMD_OP_2RST_QP:
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case MLX5_CMD_OP_QUERY_QP:
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case MLX5_CMD_OP_SQD_RTS_QP:
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case MLX5_CMD_OP_INIT2INIT_QP:
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case MLX5_CMD_OP_CREATE_PSV:
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case MLX5_CMD_OP_CREATE_SRQ:
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case MLX5_CMD_OP_QUERY_SRQ:
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case MLX5_CMD_OP_ARM_RQ:
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case MLX5_CMD_OP_CREATE_XRC_SRQ:
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case MLX5_CMD_OP_QUERY_XRC_SRQ:
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case MLX5_CMD_OP_ARM_XRC_SRQ:
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case MLX5_CMD_OP_CREATE_DCT:
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case MLX5_CMD_OP_DRAIN_DCT:
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case MLX5_CMD_OP_QUERY_DCT:
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case MLX5_CMD_OP_ARM_DCT_FOR_KEY_VIOLATION:
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case MLX5_CMD_OP_QUERY_VPORT_STATE:
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case MLX5_CMD_OP_MODIFY_VPORT_STATE:
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case MLX5_CMD_OP_QUERY_ESW_VPORT_CONTEXT:
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case MLX5_CMD_OP_MODIFY_ESW_VPORT_CONTEXT:
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case MLX5_CMD_OP_QUERY_NIC_VPORT_CONTEXT:
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case MLX5_CMD_OP_MODIFY_NIC_VPORT_CONTEXT:
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case MLX5_CMD_OP_QUERY_ROCE_ADDRESS:
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case MLX5_CMD_OP_SET_ROCE_ADDRESS:
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case MLX5_CMD_OP_QUERY_HCA_VPORT_CONTEXT:
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case MLX5_CMD_OP_MODIFY_HCA_VPORT_CONTEXT:
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case MLX5_CMD_OP_QUERY_HCA_VPORT_GID:
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case MLX5_CMD_OP_QUERY_HCA_VPORT_PKEY:
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case MLX5_CMD_OP_QUERY_VPORT_COUNTER:
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case MLX5_CMD_OP_ALLOC_Q_COUNTER:
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case MLX5_CMD_OP_QUERY_Q_COUNTER:
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case MLX5_CMD_OP_ALLOC_PD:
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case MLX5_CMD_OP_ALLOC_UAR:
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case MLX5_CMD_OP_CONFIG_INT_MODERATION:
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case MLX5_CMD_OP_ACCESS_REG:
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case MLX5_CMD_OP_ATTACH_TO_MCG:
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case MLX5_CMD_OP_GET_DROPPED_PACKET_LOG:
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case MLX5_CMD_OP_MAD_IFC:
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case MLX5_CMD_OP_QUERY_MAD_DEMUX:
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case MLX5_CMD_OP_SET_MAD_DEMUX:
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case MLX5_CMD_OP_NOP:
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case MLX5_CMD_OP_ALLOC_XRCD:
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case MLX5_CMD_OP_ALLOC_TRANSPORT_DOMAIN:
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case MLX5_CMD_OP_QUERY_CONG_STATUS:
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case MLX5_CMD_OP_MODIFY_CONG_STATUS:
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case MLX5_CMD_OP_QUERY_CONG_PARAMS:
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case MLX5_CMD_OP_MODIFY_CONG_PARAMS:
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case MLX5_CMD_OP_QUERY_CONG_STATISTICS:
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case MLX5_CMD_OP_ADD_VXLAN_UDP_DPORT:
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case MLX5_CMD_OP_SET_L2_TABLE_ENTRY:
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case MLX5_CMD_OP_QUERY_L2_TABLE_ENTRY:
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case MLX5_CMD_OP_CREATE_TIR:
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case MLX5_CMD_OP_MODIFY_TIR:
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case MLX5_CMD_OP_QUERY_TIR:
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case MLX5_CMD_OP_CREATE_SQ:
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case MLX5_CMD_OP_MODIFY_SQ:
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case MLX5_CMD_OP_QUERY_SQ:
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case MLX5_CMD_OP_CREATE_RQ:
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case MLX5_CMD_OP_MODIFY_RQ:
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case MLX5_CMD_OP_QUERY_RQ:
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case MLX5_CMD_OP_CREATE_RMP:
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case MLX5_CMD_OP_MODIFY_RMP:
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case MLX5_CMD_OP_QUERY_RMP:
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case MLX5_CMD_OP_CREATE_TIS:
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case MLX5_CMD_OP_MODIFY_TIS:
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case MLX5_CMD_OP_QUERY_TIS:
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case MLX5_CMD_OP_CREATE_RQT:
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case MLX5_CMD_OP_MODIFY_RQT:
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case MLX5_CMD_OP_QUERY_RQT:
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case MLX5_CMD_OP_CREATE_FLOW_TABLE:
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case MLX5_CMD_OP_QUERY_FLOW_TABLE:
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case MLX5_CMD_OP_CREATE_FLOW_GROUP:
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case MLX5_CMD_OP_QUERY_FLOW_GROUP:
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case MLX5_CMD_OP_SET_FLOW_TABLE_ENTRY:
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case MLX5_CMD_OP_QUERY_FLOW_TABLE_ENTRY:
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*status = MLX5_DRIVER_STATUS_ABORTED;
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*synd = MLX5_DRIVER_SYND;
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return -EIO;
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default:
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mlx5_core_err(dev, "Unknown FW command (%d)\n", op);
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return -EINVAL;
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}
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}
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const char *mlx5_command_str(int command)
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{
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switch (command) {
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case MLX5_CMD_OP_QUERY_HCA_CAP:
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return "QUERY_HCA_CAP";
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case MLX5_CMD_OP_SET_HCA_CAP:
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return "SET_HCA_CAP";
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case MLX5_CMD_OP_QUERY_ADAPTER:
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return "QUERY_ADAPTER";
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case MLX5_CMD_OP_INIT_HCA:
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return "INIT_HCA";
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case MLX5_CMD_OP_TEARDOWN_HCA:
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return "TEARDOWN_HCA";
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case MLX5_CMD_OP_ENABLE_HCA:
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return "MLX5_CMD_OP_ENABLE_HCA";
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case MLX5_CMD_OP_DISABLE_HCA:
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return "MLX5_CMD_OP_DISABLE_HCA";
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case MLX5_CMD_OP_QUERY_PAGES:
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return "QUERY_PAGES";
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case MLX5_CMD_OP_MANAGE_PAGES:
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return "MANAGE_PAGES";
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case MLX5_CMD_OP_CREATE_MKEY:
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return "CREATE_MKEY";
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case MLX5_CMD_OP_QUERY_MKEY:
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return "QUERY_MKEY";
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case MLX5_CMD_OP_DESTROY_MKEY:
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return "DESTROY_MKEY";
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case MLX5_CMD_OP_QUERY_SPECIAL_CONTEXTS:
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return "QUERY_SPECIAL_CONTEXTS";
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case MLX5_CMD_OP_CREATE_EQ:
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return "CREATE_EQ";
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case MLX5_CMD_OP_DESTROY_EQ:
|
|
return "DESTROY_EQ";
|
|
|
|
case MLX5_CMD_OP_QUERY_EQ:
|
|
return "QUERY_EQ";
|
|
|
|
case MLX5_CMD_OP_CREATE_CQ:
|
|
return "CREATE_CQ";
|
|
|
|
case MLX5_CMD_OP_DESTROY_CQ:
|
|
return "DESTROY_CQ";
|
|
|
|
case MLX5_CMD_OP_QUERY_CQ:
|
|
return "QUERY_CQ";
|
|
|
|
case MLX5_CMD_OP_MODIFY_CQ:
|
|
return "MODIFY_CQ";
|
|
|
|
case MLX5_CMD_OP_CREATE_QP:
|
|
return "CREATE_QP";
|
|
|
|
case MLX5_CMD_OP_DESTROY_QP:
|
|
return "DESTROY_QP";
|
|
|
|
case MLX5_CMD_OP_RST2INIT_QP:
|
|
return "RST2INIT_QP";
|
|
|
|
case MLX5_CMD_OP_INIT2RTR_QP:
|
|
return "INIT2RTR_QP";
|
|
|
|
case MLX5_CMD_OP_RTR2RTS_QP:
|
|
return "RTR2RTS_QP";
|
|
|
|
case MLX5_CMD_OP_RTS2RTS_QP:
|
|
return "RTS2RTS_QP";
|
|
|
|
case MLX5_CMD_OP_SQERR2RTS_QP:
|
|
return "SQERR2RTS_QP";
|
|
|
|
case MLX5_CMD_OP_2ERR_QP:
|
|
return "2ERR_QP";
|
|
|
|
case MLX5_CMD_OP_2RST_QP:
|
|
return "2RST_QP";
|
|
|
|
case MLX5_CMD_OP_QUERY_QP:
|
|
return "QUERY_QP";
|
|
|
|
case MLX5_CMD_OP_MAD_IFC:
|
|
return "MAD_IFC";
|
|
|
|
case MLX5_CMD_OP_INIT2INIT_QP:
|
|
return "INIT2INIT_QP";
|
|
|
|
case MLX5_CMD_OP_CREATE_PSV:
|
|
return "CREATE_PSV";
|
|
|
|
case MLX5_CMD_OP_DESTROY_PSV:
|
|
return "DESTROY_PSV";
|
|
|
|
case MLX5_CMD_OP_CREATE_SRQ:
|
|
return "CREATE_SRQ";
|
|
|
|
case MLX5_CMD_OP_DESTROY_SRQ:
|
|
return "DESTROY_SRQ";
|
|
|
|
case MLX5_CMD_OP_QUERY_SRQ:
|
|
return "QUERY_SRQ";
|
|
|
|
case MLX5_CMD_OP_ARM_RQ:
|
|
return "ARM_RQ";
|
|
|
|
case MLX5_CMD_OP_CREATE_XRC_SRQ:
|
|
return "CREATE_XRC_SRQ";
|
|
|
|
case MLX5_CMD_OP_DESTROY_XRC_SRQ:
|
|
return "DESTROY_XRC_SRQ";
|
|
|
|
case MLX5_CMD_OP_QUERY_XRC_SRQ:
|
|
return "QUERY_XRC_SRQ";
|
|
|
|
case MLX5_CMD_OP_ARM_XRC_SRQ:
|
|
return "ARM_XRC_SRQ";
|
|
|
|
case MLX5_CMD_OP_ALLOC_PD:
|
|
return "ALLOC_PD";
|
|
|
|
case MLX5_CMD_OP_DEALLOC_PD:
|
|
return "DEALLOC_PD";
|
|
|
|
case MLX5_CMD_OP_ALLOC_UAR:
|
|
return "ALLOC_UAR";
|
|
|
|
case MLX5_CMD_OP_DEALLOC_UAR:
|
|
return "DEALLOC_UAR";
|
|
|
|
case MLX5_CMD_OP_ATTACH_TO_MCG:
|
|
return "ATTACH_TO_MCG";
|
|
|
|
case MLX5_CMD_OP_DETTACH_FROM_MCG:
|
|
return "DETTACH_FROM_MCG";
|
|
|
|
case MLX5_CMD_OP_ALLOC_XRCD:
|
|
return "ALLOC_XRCD";
|
|
|
|
case MLX5_CMD_OP_DEALLOC_XRCD:
|
|
return "DEALLOC_XRCD";
|
|
|
|
case MLX5_CMD_OP_ACCESS_REG:
|
|
return "MLX5_CMD_OP_ACCESS_REG";
|
|
|
|
default: return "unknown command opcode";
|
|
}
|
|
}
|
|
|
|
static void dump_command(struct mlx5_core_dev *dev,
|
|
struct mlx5_cmd_work_ent *ent, int input)
|
|
{
|
|
u16 op = be16_to_cpu(((struct mlx5_inbox_hdr *)(ent->lay->in))->opcode);
|
|
struct mlx5_cmd_msg *msg = input ? ent->in : ent->out;
|
|
struct mlx5_cmd_mailbox *next = msg->next;
|
|
int data_only;
|
|
u32 offset = 0;
|
|
int dump_len;
|
|
|
|
data_only = !!(mlx5_core_debug_mask & (1 << MLX5_CMD_DATA));
|
|
|
|
if (data_only)
|
|
mlx5_core_dbg_mask(dev, 1 << MLX5_CMD_DATA,
|
|
"dump command data %s(0x%x) %s\n",
|
|
mlx5_command_str(op), op,
|
|
input ? "INPUT" : "OUTPUT");
|
|
else
|
|
mlx5_core_dbg(dev, "dump command %s(0x%x) %s\n",
|
|
mlx5_command_str(op), op,
|
|
input ? "INPUT" : "OUTPUT");
|
|
|
|
if (data_only) {
|
|
if (input) {
|
|
dump_buf(ent->lay->in, sizeof(ent->lay->in), 1, offset);
|
|
offset += sizeof(ent->lay->in);
|
|
} else {
|
|
dump_buf(ent->lay->out, sizeof(ent->lay->out), 1, offset);
|
|
offset += sizeof(ent->lay->out);
|
|
}
|
|
} else {
|
|
dump_buf(ent->lay, sizeof(*ent->lay), 0, offset);
|
|
offset += sizeof(*ent->lay);
|
|
}
|
|
|
|
while (next && offset < msg->len) {
|
|
if (data_only) {
|
|
dump_len = min_t(int, MLX5_CMD_DATA_BLOCK_SIZE, msg->len - offset);
|
|
dump_buf(next->buf, dump_len, 1, offset);
|
|
offset += MLX5_CMD_DATA_BLOCK_SIZE;
|
|
} else {
|
|
mlx5_core_dbg(dev, "command block:\n");
|
|
dump_buf(next->buf, sizeof(struct mlx5_cmd_prot_block), 0, offset);
|
|
offset += sizeof(struct mlx5_cmd_prot_block);
|
|
}
|
|
next = next->next;
|
|
}
|
|
|
|
if (data_only)
|
|
pr_debug("\n");
|
|
}
|
|
|
|
static void cmd_work_handler(struct work_struct *work)
|
|
{
|
|
struct mlx5_cmd_work_ent *ent = container_of(work, struct mlx5_cmd_work_ent, work);
|
|
struct mlx5_cmd *cmd = ent->cmd;
|
|
struct mlx5_core_dev *dev = container_of(cmd, struct mlx5_core_dev, cmd);
|
|
struct mlx5_cmd_layout *lay;
|
|
struct semaphore *sem;
|
|
unsigned long flags;
|
|
|
|
sem = ent->page_queue ? &cmd->pages_sem : &cmd->sem;
|
|
down(sem);
|
|
if (!ent->page_queue) {
|
|
ent->idx = alloc_ent(cmd);
|
|
if (ent->idx < 0) {
|
|
mlx5_core_err(dev, "failed to allocate command entry\n");
|
|
up(sem);
|
|
return;
|
|
}
|
|
} else {
|
|
ent->idx = cmd->max_reg_cmds;
|
|
spin_lock_irqsave(&cmd->alloc_lock, flags);
|
|
clear_bit(ent->idx, &cmd->bitmask);
|
|
spin_unlock_irqrestore(&cmd->alloc_lock, flags);
|
|
}
|
|
|
|
ent->token = alloc_token(cmd);
|
|
cmd->ent_arr[ent->idx] = ent;
|
|
lay = get_inst(cmd, ent->idx);
|
|
ent->lay = lay;
|
|
memset(lay, 0, sizeof(*lay));
|
|
memcpy(lay->in, ent->in->first.data, sizeof(lay->in));
|
|
ent->op = be32_to_cpu(lay->in[0]) >> 16;
|
|
if (ent->in->next)
|
|
lay->in_ptr = cpu_to_be64(ent->in->next->dma);
|
|
lay->inlen = cpu_to_be32(ent->in->len);
|
|
if (ent->out->next)
|
|
lay->out_ptr = cpu_to_be64(ent->out->next->dma);
|
|
lay->outlen = cpu_to_be32(ent->out->len);
|
|
lay->type = MLX5_PCI_CMD_XPORT;
|
|
lay->token = ent->token;
|
|
lay->status_own = CMD_OWNER_HW;
|
|
set_signature(ent, !cmd->checksum_disabled);
|
|
dump_command(dev, ent, 1);
|
|
ent->ts1 = ktime_get_ns();
|
|
|
|
/* ring doorbell after the descriptor is valid */
|
|
mlx5_core_dbg(dev, "writing 0x%x to command doorbell\n", 1 << ent->idx);
|
|
wmb();
|
|
iowrite32be(1 << ent->idx, &dev->iseg->cmd_dbell);
|
|
mmiowb();
|
|
/* if not in polling don't use ent after this point */
|
|
if (cmd->mode == CMD_MODE_POLLING) {
|
|
poll_timeout(ent);
|
|
/* make sure we read the descriptor after ownership is SW */
|
|
rmb();
|
|
mlx5_cmd_comp_handler(dev, 1UL << ent->idx);
|
|
}
|
|
}
|
|
|
|
static const char *deliv_status_to_str(u8 status)
|
|
{
|
|
switch (status) {
|
|
case MLX5_CMD_DELIVERY_STAT_OK:
|
|
return "no errors";
|
|
case MLX5_CMD_DELIVERY_STAT_SIGNAT_ERR:
|
|
return "signature error";
|
|
case MLX5_CMD_DELIVERY_STAT_TOK_ERR:
|
|
return "token error";
|
|
case MLX5_CMD_DELIVERY_STAT_BAD_BLK_NUM_ERR:
|
|
return "bad block number";
|
|
case MLX5_CMD_DELIVERY_STAT_OUT_PTR_ALIGN_ERR:
|
|
return "output pointer not aligned to block size";
|
|
case MLX5_CMD_DELIVERY_STAT_IN_PTR_ALIGN_ERR:
|
|
return "input pointer not aligned to block size";
|
|
case MLX5_CMD_DELIVERY_STAT_FW_ERR:
|
|
return "firmware internal error";
|
|
case MLX5_CMD_DELIVERY_STAT_IN_LENGTH_ERR:
|
|
return "command input length error";
|
|
case MLX5_CMD_DELIVERY_STAT_OUT_LENGTH_ERR:
|
|
return "command ouput length error";
|
|
case MLX5_CMD_DELIVERY_STAT_RES_FLD_NOT_CLR_ERR:
|
|
return "reserved fields not cleared";
|
|
case MLX5_CMD_DELIVERY_STAT_CMD_DESCR_ERR:
|
|
return "bad command descriptor type";
|
|
default:
|
|
return "unknown status code";
|
|
}
|
|
}
|
|
|
|
static u16 msg_to_opcode(struct mlx5_cmd_msg *in)
|
|
{
|
|
struct mlx5_inbox_hdr *hdr = (struct mlx5_inbox_hdr *)(in->first.data);
|
|
|
|
return be16_to_cpu(hdr->opcode);
|
|
}
|
|
|
|
static int wait_func(struct mlx5_core_dev *dev, struct mlx5_cmd_work_ent *ent)
|
|
{
|
|
unsigned long timeout = msecs_to_jiffies(MLX5_CMD_TIMEOUT_MSEC);
|
|
struct mlx5_cmd *cmd = &dev->cmd;
|
|
int err;
|
|
|
|
if (cmd->mode == CMD_MODE_POLLING) {
|
|
wait_for_completion(&ent->done);
|
|
err = ent->ret;
|
|
} else {
|
|
if (!wait_for_completion_timeout(&ent->done, timeout))
|
|
err = -ETIMEDOUT;
|
|
else
|
|
err = 0;
|
|
}
|
|
if (err == -ETIMEDOUT) {
|
|
mlx5_core_warn(dev, "%s(0x%x) timeout. Will cause a leak of a command resource\n",
|
|
mlx5_command_str(msg_to_opcode(ent->in)),
|
|
msg_to_opcode(ent->in));
|
|
}
|
|
mlx5_core_dbg(dev, "err %d, delivery status %s(%d)\n",
|
|
err, deliv_status_to_str(ent->status), ent->status);
|
|
|
|
return err;
|
|
}
|
|
|
|
static __be32 *get_synd_ptr(struct mlx5_outbox_hdr *out)
|
|
{
|
|
return &out->syndrome;
|
|
}
|
|
|
|
static u8 *get_status_ptr(struct mlx5_outbox_hdr *out)
|
|
{
|
|
return &out->status;
|
|
}
|
|
|
|
/* Notes:
|
|
* 1. Callback functions may not sleep
|
|
* 2. page queue commands do not support asynchrous completion
|
|
*/
|
|
static int mlx5_cmd_invoke(struct mlx5_core_dev *dev, struct mlx5_cmd_msg *in,
|
|
struct mlx5_cmd_msg *out, void *uout, int uout_size,
|
|
mlx5_cmd_cbk_t callback,
|
|
void *context, int page_queue, u8 *status)
|
|
{
|
|
struct mlx5_cmd *cmd = &dev->cmd;
|
|
struct mlx5_cmd_work_ent *ent;
|
|
struct mlx5_cmd_stats *stats;
|
|
int err = 0;
|
|
s64 ds;
|
|
u16 op;
|
|
|
|
if (callback && page_queue)
|
|
return -EINVAL;
|
|
|
|
ent = alloc_cmd(cmd, in, out, uout, uout_size, callback, context,
|
|
page_queue);
|
|
if (IS_ERR(ent))
|
|
return PTR_ERR(ent);
|
|
|
|
if (!callback)
|
|
init_completion(&ent->done);
|
|
|
|
INIT_WORK(&ent->work, cmd_work_handler);
|
|
if (page_queue) {
|
|
cmd_work_handler(&ent->work);
|
|
} else if (!queue_work(cmd->wq, &ent->work)) {
|
|
mlx5_core_warn(dev, "failed to queue work\n");
|
|
err = -ENOMEM;
|
|
goto out_free;
|
|
}
|
|
|
|
if (!callback) {
|
|
err = wait_func(dev, ent);
|
|
if (err == -ETIMEDOUT)
|
|
goto out;
|
|
|
|
ds = ent->ts2 - ent->ts1;
|
|
op = be16_to_cpu(((struct mlx5_inbox_hdr *)in->first.data)->opcode);
|
|
if (op < ARRAY_SIZE(cmd->stats)) {
|
|
stats = &cmd->stats[op];
|
|
spin_lock_irq(&stats->lock);
|
|
stats->sum += ds;
|
|
++stats->n;
|
|
spin_unlock_irq(&stats->lock);
|
|
}
|
|
mlx5_core_dbg_mask(dev, 1 << MLX5_CMD_TIME,
|
|
"fw exec time for %s is %lld nsec\n",
|
|
mlx5_command_str(op), ds);
|
|
*status = ent->status;
|
|
free_cmd(ent);
|
|
}
|
|
|
|
return err;
|
|
|
|
out_free:
|
|
free_cmd(ent);
|
|
out:
|
|
return err;
|
|
}
|
|
|
|
static ssize_t dbg_write(struct file *filp, const char __user *buf,
|
|
size_t count, loff_t *pos)
|
|
{
|
|
struct mlx5_core_dev *dev = filp->private_data;
|
|
struct mlx5_cmd_debug *dbg = &dev->cmd.dbg;
|
|
char lbuf[3];
|
|
int err;
|
|
|
|
if (!dbg->in_msg || !dbg->out_msg)
|
|
return -ENOMEM;
|
|
|
|
if (copy_from_user(lbuf, buf, sizeof(lbuf)))
|
|
return -EFAULT;
|
|
|
|
lbuf[sizeof(lbuf) - 1] = 0;
|
|
|
|
if (strcmp(lbuf, "go"))
|
|
return -EINVAL;
|
|
|
|
err = mlx5_cmd_exec(dev, dbg->in_msg, dbg->inlen, dbg->out_msg, dbg->outlen);
|
|
|
|
return err ? err : count;
|
|
}
|
|
|
|
|
|
static const struct file_operations fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = simple_open,
|
|
.write = dbg_write,
|
|
};
|
|
|
|
static int mlx5_copy_to_msg(struct mlx5_cmd_msg *to, void *from, int size)
|
|
{
|
|
struct mlx5_cmd_prot_block *block;
|
|
struct mlx5_cmd_mailbox *next;
|
|
int copy;
|
|
|
|
if (!to || !from)
|
|
return -ENOMEM;
|
|
|
|
copy = min_t(int, size, sizeof(to->first.data));
|
|
memcpy(to->first.data, from, copy);
|
|
size -= copy;
|
|
from += copy;
|
|
|
|
next = to->next;
|
|
while (size) {
|
|
if (!next) {
|
|
/* this is a BUG */
|
|
return -ENOMEM;
|
|
}
|
|
|
|
copy = min_t(int, size, MLX5_CMD_DATA_BLOCK_SIZE);
|
|
block = next->buf;
|
|
memcpy(block->data, from, copy);
|
|
from += copy;
|
|
size -= copy;
|
|
next = next->next;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mlx5_copy_from_msg(void *to, struct mlx5_cmd_msg *from, int size)
|
|
{
|
|
struct mlx5_cmd_prot_block *block;
|
|
struct mlx5_cmd_mailbox *next;
|
|
int copy;
|
|
|
|
if (!to || !from)
|
|
return -ENOMEM;
|
|
|
|
copy = min_t(int, size, sizeof(from->first.data));
|
|
memcpy(to, from->first.data, copy);
|
|
size -= copy;
|
|
to += copy;
|
|
|
|
next = from->next;
|
|
while (size) {
|
|
if (!next) {
|
|
/* this is a BUG */
|
|
return -ENOMEM;
|
|
}
|
|
|
|
copy = min_t(int, size, MLX5_CMD_DATA_BLOCK_SIZE);
|
|
block = next->buf;
|
|
|
|
memcpy(to, block->data, copy);
|
|
to += copy;
|
|
size -= copy;
|
|
next = next->next;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct mlx5_cmd_mailbox *alloc_cmd_box(struct mlx5_core_dev *dev,
|
|
gfp_t flags)
|
|
{
|
|
struct mlx5_cmd_mailbox *mailbox;
|
|
|
|
mailbox = kmalloc(sizeof(*mailbox), flags);
|
|
if (!mailbox)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
mailbox->buf = pci_pool_alloc(dev->cmd.pool, flags,
|
|
&mailbox->dma);
|
|
if (!mailbox->buf) {
|
|
mlx5_core_dbg(dev, "failed allocation\n");
|
|
kfree(mailbox);
|
|
return ERR_PTR(-ENOMEM);
|
|
}
|
|
memset(mailbox->buf, 0, sizeof(struct mlx5_cmd_prot_block));
|
|
mailbox->next = NULL;
|
|
|
|
return mailbox;
|
|
}
|
|
|
|
static void free_cmd_box(struct mlx5_core_dev *dev,
|
|
struct mlx5_cmd_mailbox *mailbox)
|
|
{
|
|
pci_pool_free(dev->cmd.pool, mailbox->buf, mailbox->dma);
|
|
kfree(mailbox);
|
|
}
|
|
|
|
static struct mlx5_cmd_msg *mlx5_alloc_cmd_msg(struct mlx5_core_dev *dev,
|
|
gfp_t flags, int size)
|
|
{
|
|
struct mlx5_cmd_mailbox *tmp, *head = NULL;
|
|
struct mlx5_cmd_prot_block *block;
|
|
struct mlx5_cmd_msg *msg;
|
|
int blen;
|
|
int err;
|
|
int n;
|
|
int i;
|
|
|
|
msg = kzalloc(sizeof(*msg), flags);
|
|
if (!msg)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
blen = size - min_t(int, sizeof(msg->first.data), size);
|
|
n = (blen + MLX5_CMD_DATA_BLOCK_SIZE - 1) / MLX5_CMD_DATA_BLOCK_SIZE;
|
|
|
|
for (i = 0; i < n; i++) {
|
|
tmp = alloc_cmd_box(dev, flags);
|
|
if (IS_ERR(tmp)) {
|
|
mlx5_core_warn(dev, "failed allocating block\n");
|
|
err = PTR_ERR(tmp);
|
|
goto err_alloc;
|
|
}
|
|
|
|
block = tmp->buf;
|
|
tmp->next = head;
|
|
block->next = cpu_to_be64(tmp->next ? tmp->next->dma : 0);
|
|
block->block_num = cpu_to_be32(n - i - 1);
|
|
head = tmp;
|
|
}
|
|
msg->next = head;
|
|
msg->len = size;
|
|
return msg;
|
|
|
|
err_alloc:
|
|
while (head) {
|
|
tmp = head->next;
|
|
free_cmd_box(dev, head);
|
|
head = tmp;
|
|
}
|
|
kfree(msg);
|
|
|
|
return ERR_PTR(err);
|
|
}
|
|
|
|
static void mlx5_free_cmd_msg(struct mlx5_core_dev *dev,
|
|
struct mlx5_cmd_msg *msg)
|
|
{
|
|
struct mlx5_cmd_mailbox *head = msg->next;
|
|
struct mlx5_cmd_mailbox *next;
|
|
|
|
while (head) {
|
|
next = head->next;
|
|
free_cmd_box(dev, head);
|
|
head = next;
|
|
}
|
|
kfree(msg);
|
|
}
|
|
|
|
static ssize_t data_write(struct file *filp, const char __user *buf,
|
|
size_t count, loff_t *pos)
|
|
{
|
|
struct mlx5_core_dev *dev = filp->private_data;
|
|
struct mlx5_cmd_debug *dbg = &dev->cmd.dbg;
|
|
void *ptr;
|
|
int err;
|
|
|
|
if (*pos != 0)
|
|
return -EINVAL;
|
|
|
|
kfree(dbg->in_msg);
|
|
dbg->in_msg = NULL;
|
|
dbg->inlen = 0;
|
|
|
|
ptr = kzalloc(count, GFP_KERNEL);
|
|
if (!ptr)
|
|
return -ENOMEM;
|
|
|
|
if (copy_from_user(ptr, buf, count)) {
|
|
err = -EFAULT;
|
|
goto out;
|
|
}
|
|
dbg->in_msg = ptr;
|
|
dbg->inlen = count;
|
|
|
|
*pos = count;
|
|
|
|
return count;
|
|
|
|
out:
|
|
kfree(ptr);
|
|
return err;
|
|
}
|
|
|
|
static ssize_t data_read(struct file *filp, char __user *buf, size_t count,
|
|
loff_t *pos)
|
|
{
|
|
struct mlx5_core_dev *dev = filp->private_data;
|
|
struct mlx5_cmd_debug *dbg = &dev->cmd.dbg;
|
|
int copy;
|
|
|
|
if (*pos)
|
|
return 0;
|
|
|
|
if (!dbg->out_msg)
|
|
return -ENOMEM;
|
|
|
|
copy = min_t(int, count, dbg->outlen);
|
|
if (copy_to_user(buf, dbg->out_msg, copy))
|
|
return -EFAULT;
|
|
|
|
*pos += copy;
|
|
|
|
return copy;
|
|
}
|
|
|
|
static const struct file_operations dfops = {
|
|
.owner = THIS_MODULE,
|
|
.open = simple_open,
|
|
.write = data_write,
|
|
.read = data_read,
|
|
};
|
|
|
|
static ssize_t outlen_read(struct file *filp, char __user *buf, size_t count,
|
|
loff_t *pos)
|
|
{
|
|
struct mlx5_core_dev *dev = filp->private_data;
|
|
struct mlx5_cmd_debug *dbg = &dev->cmd.dbg;
|
|
char outlen[8];
|
|
int err;
|
|
|
|
if (*pos)
|
|
return 0;
|
|
|
|
err = snprintf(outlen, sizeof(outlen), "%d", dbg->outlen);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
if (copy_to_user(buf, &outlen, err))
|
|
return -EFAULT;
|
|
|
|
*pos += err;
|
|
|
|
return err;
|
|
}
|
|
|
|
static ssize_t outlen_write(struct file *filp, const char __user *buf,
|
|
size_t count, loff_t *pos)
|
|
{
|
|
struct mlx5_core_dev *dev = filp->private_data;
|
|
struct mlx5_cmd_debug *dbg = &dev->cmd.dbg;
|
|
char outlen_str[8];
|
|
int outlen;
|
|
void *ptr;
|
|
int err;
|
|
|
|
if (*pos != 0 || count > 6)
|
|
return -EINVAL;
|
|
|
|
kfree(dbg->out_msg);
|
|
dbg->out_msg = NULL;
|
|
dbg->outlen = 0;
|
|
|
|
if (copy_from_user(outlen_str, buf, count))
|
|
return -EFAULT;
|
|
|
|
outlen_str[7] = 0;
|
|
|
|
err = sscanf(outlen_str, "%d", &outlen);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
ptr = kzalloc(outlen, GFP_KERNEL);
|
|
if (!ptr)
|
|
return -ENOMEM;
|
|
|
|
dbg->out_msg = ptr;
|
|
dbg->outlen = outlen;
|
|
|
|
*pos = count;
|
|
|
|
return count;
|
|
}
|
|
|
|
static const struct file_operations olfops = {
|
|
.owner = THIS_MODULE,
|
|
.open = simple_open,
|
|
.write = outlen_write,
|
|
.read = outlen_read,
|
|
};
|
|
|
|
static void set_wqname(struct mlx5_core_dev *dev)
|
|
{
|
|
struct mlx5_cmd *cmd = &dev->cmd;
|
|
|
|
snprintf(cmd->wq_name, sizeof(cmd->wq_name), "mlx5_cmd_%s",
|
|
dev_name(&dev->pdev->dev));
|
|
}
|
|
|
|
static void clean_debug_files(struct mlx5_core_dev *dev)
|
|
{
|
|
struct mlx5_cmd_debug *dbg = &dev->cmd.dbg;
|
|
|
|
if (!mlx5_debugfs_root)
|
|
return;
|
|
|
|
mlx5_cmdif_debugfs_cleanup(dev);
|
|
debugfs_remove_recursive(dbg->dbg_root);
|
|
}
|
|
|
|
static int create_debugfs_files(struct mlx5_core_dev *dev)
|
|
{
|
|
struct mlx5_cmd_debug *dbg = &dev->cmd.dbg;
|
|
int err = -ENOMEM;
|
|
|
|
if (!mlx5_debugfs_root)
|
|
return 0;
|
|
|
|
dbg->dbg_root = debugfs_create_dir("cmd", dev->priv.dbg_root);
|
|
if (!dbg->dbg_root)
|
|
return err;
|
|
|
|
dbg->dbg_in = debugfs_create_file("in", 0400, dbg->dbg_root,
|
|
dev, &dfops);
|
|
if (!dbg->dbg_in)
|
|
goto err_dbg;
|
|
|
|
dbg->dbg_out = debugfs_create_file("out", 0200, dbg->dbg_root,
|
|
dev, &dfops);
|
|
if (!dbg->dbg_out)
|
|
goto err_dbg;
|
|
|
|
dbg->dbg_outlen = debugfs_create_file("out_len", 0600, dbg->dbg_root,
|
|
dev, &olfops);
|
|
if (!dbg->dbg_outlen)
|
|
goto err_dbg;
|
|
|
|
dbg->dbg_status = debugfs_create_u8("status", 0600, dbg->dbg_root,
|
|
&dbg->status);
|
|
if (!dbg->dbg_status)
|
|
goto err_dbg;
|
|
|
|
dbg->dbg_run = debugfs_create_file("run", 0200, dbg->dbg_root, dev, &fops);
|
|
if (!dbg->dbg_run)
|
|
goto err_dbg;
|
|
|
|
mlx5_cmdif_debugfs_init(dev);
|
|
|
|
return 0;
|
|
|
|
err_dbg:
|
|
clean_debug_files(dev);
|
|
return err;
|
|
}
|
|
|
|
void mlx5_cmd_use_events(struct mlx5_core_dev *dev)
|
|
{
|
|
struct mlx5_cmd *cmd = &dev->cmd;
|
|
int i;
|
|
|
|
for (i = 0; i < cmd->max_reg_cmds; i++)
|
|
down(&cmd->sem);
|
|
|
|
down(&cmd->pages_sem);
|
|
|
|
flush_workqueue(cmd->wq);
|
|
|
|
cmd->mode = CMD_MODE_EVENTS;
|
|
|
|
up(&cmd->pages_sem);
|
|
for (i = 0; i < cmd->max_reg_cmds; i++)
|
|
up(&cmd->sem);
|
|
}
|
|
|
|
void mlx5_cmd_use_polling(struct mlx5_core_dev *dev)
|
|
{
|
|
struct mlx5_cmd *cmd = &dev->cmd;
|
|
int i;
|
|
|
|
for (i = 0; i < cmd->max_reg_cmds; i++)
|
|
down(&cmd->sem);
|
|
|
|
down(&cmd->pages_sem);
|
|
|
|
flush_workqueue(cmd->wq);
|
|
cmd->mode = CMD_MODE_POLLING;
|
|
|
|
up(&cmd->pages_sem);
|
|
for (i = 0; i < cmd->max_reg_cmds; i++)
|
|
up(&cmd->sem);
|
|
}
|
|
|
|
static void free_msg(struct mlx5_core_dev *dev, struct mlx5_cmd_msg *msg)
|
|
{
|
|
unsigned long flags;
|
|
|
|
if (msg->cache) {
|
|
spin_lock_irqsave(&msg->cache->lock, flags);
|
|
list_add_tail(&msg->list, &msg->cache->head);
|
|
spin_unlock_irqrestore(&msg->cache->lock, flags);
|
|
} else {
|
|
mlx5_free_cmd_msg(dev, msg);
|
|
}
|
|
}
|
|
|
|
void mlx5_cmd_comp_handler(struct mlx5_core_dev *dev, u64 vec)
|
|
{
|
|
struct mlx5_cmd *cmd = &dev->cmd;
|
|
struct mlx5_cmd_work_ent *ent;
|
|
mlx5_cmd_cbk_t callback;
|
|
void *context;
|
|
int err;
|
|
int i;
|
|
s64 ds;
|
|
struct mlx5_cmd_stats *stats;
|
|
unsigned long flags;
|
|
unsigned long vector;
|
|
|
|
/* there can be at most 32 command queues */
|
|
vector = vec & 0xffffffff;
|
|
for (i = 0; i < (1 << cmd->log_sz); i++) {
|
|
if (test_bit(i, &vector)) {
|
|
struct semaphore *sem;
|
|
|
|
ent = cmd->ent_arr[i];
|
|
if (ent->page_queue)
|
|
sem = &cmd->pages_sem;
|
|
else
|
|
sem = &cmd->sem;
|
|
ent->ts2 = ktime_get_ns();
|
|
memcpy(ent->out->first.data, ent->lay->out, sizeof(ent->lay->out));
|
|
dump_command(dev, ent, 0);
|
|
if (!ent->ret) {
|
|
if (!cmd->checksum_disabled)
|
|
ent->ret = verify_signature(ent);
|
|
else
|
|
ent->ret = 0;
|
|
if (vec & MLX5_TRIGGERED_CMD_COMP)
|
|
ent->status = MLX5_DRIVER_STATUS_ABORTED;
|
|
else
|
|
ent->status = ent->lay->status_own >> 1;
|
|
|
|
mlx5_core_dbg(dev, "command completed. ret 0x%x, delivery status %s(0x%x)\n",
|
|
ent->ret, deliv_status_to_str(ent->status), ent->status);
|
|
}
|
|
free_ent(cmd, ent->idx);
|
|
|
|
if (ent->callback) {
|
|
ds = ent->ts2 - ent->ts1;
|
|
if (ent->op < ARRAY_SIZE(cmd->stats)) {
|
|
stats = &cmd->stats[ent->op];
|
|
spin_lock_irqsave(&stats->lock, flags);
|
|
stats->sum += ds;
|
|
++stats->n;
|
|
spin_unlock_irqrestore(&stats->lock, flags);
|
|
}
|
|
|
|
callback = ent->callback;
|
|
context = ent->context;
|
|
err = ent->ret;
|
|
if (!err)
|
|
err = mlx5_copy_from_msg(ent->uout,
|
|
ent->out,
|
|
ent->uout_size);
|
|
|
|
mlx5_free_cmd_msg(dev, ent->out);
|
|
free_msg(dev, ent->in);
|
|
|
|
err = err ? err : ent->status;
|
|
free_cmd(ent);
|
|
callback(err, context);
|
|
} else {
|
|
complete(&ent->done);
|
|
}
|
|
up(sem);
|
|
}
|
|
}
|
|
}
|
|
EXPORT_SYMBOL(mlx5_cmd_comp_handler);
|
|
|
|
static int status_to_err(u8 status)
|
|
{
|
|
return status ? -1 : 0; /* TBD more meaningful codes */
|
|
}
|
|
|
|
static struct mlx5_cmd_msg *alloc_msg(struct mlx5_core_dev *dev, int in_size,
|
|
gfp_t gfp)
|
|
{
|
|
struct mlx5_cmd_msg *msg = ERR_PTR(-ENOMEM);
|
|
struct mlx5_cmd *cmd = &dev->cmd;
|
|
struct cache_ent *ent = NULL;
|
|
|
|
if (in_size > MED_LIST_SIZE && in_size <= LONG_LIST_SIZE)
|
|
ent = &cmd->cache.large;
|
|
else if (in_size > 16 && in_size <= MED_LIST_SIZE)
|
|
ent = &cmd->cache.med;
|
|
|
|
if (ent) {
|
|
spin_lock_irq(&ent->lock);
|
|
if (!list_empty(&ent->head)) {
|
|
msg = list_entry(ent->head.next, typeof(*msg), list);
|
|
/* For cached lists, we must explicitly state what is
|
|
* the real size
|
|
*/
|
|
msg->len = in_size;
|
|
list_del(&msg->list);
|
|
}
|
|
spin_unlock_irq(&ent->lock);
|
|
}
|
|
|
|
if (IS_ERR(msg))
|
|
msg = mlx5_alloc_cmd_msg(dev, gfp, in_size);
|
|
|
|
return msg;
|
|
}
|
|
|
|
static u16 opcode_from_in(struct mlx5_inbox_hdr *in)
|
|
{
|
|
return be16_to_cpu(in->opcode);
|
|
}
|
|
|
|
static int is_manage_pages(struct mlx5_inbox_hdr *in)
|
|
{
|
|
return be16_to_cpu(in->opcode) == MLX5_CMD_OP_MANAGE_PAGES;
|
|
}
|
|
|
|
static int cmd_exec(struct mlx5_core_dev *dev, void *in, int in_size, void *out,
|
|
int out_size, mlx5_cmd_cbk_t callback, void *context)
|
|
{
|
|
struct mlx5_cmd_msg *inb;
|
|
struct mlx5_cmd_msg *outb;
|
|
int pages_queue;
|
|
gfp_t gfp;
|
|
int err;
|
|
u8 status = 0;
|
|
u32 drv_synd;
|
|
|
|
if (pci_channel_offline(dev->pdev) ||
|
|
dev->state == MLX5_DEVICE_STATE_INTERNAL_ERROR) {
|
|
err = mlx5_internal_err_ret_value(dev, opcode_from_in(in), &drv_synd, &status);
|
|
*get_synd_ptr(out) = cpu_to_be32(drv_synd);
|
|
*get_status_ptr(out) = status;
|
|
return err;
|
|
}
|
|
|
|
pages_queue = is_manage_pages(in);
|
|
gfp = callback ? GFP_ATOMIC : GFP_KERNEL;
|
|
|
|
inb = alloc_msg(dev, in_size, gfp);
|
|
if (IS_ERR(inb)) {
|
|
err = PTR_ERR(inb);
|
|
return err;
|
|
}
|
|
|
|
err = mlx5_copy_to_msg(inb, in, in_size);
|
|
if (err) {
|
|
mlx5_core_warn(dev, "err %d\n", err);
|
|
goto out_in;
|
|
}
|
|
|
|
outb = mlx5_alloc_cmd_msg(dev, gfp, out_size);
|
|
if (IS_ERR(outb)) {
|
|
err = PTR_ERR(outb);
|
|
goto out_in;
|
|
}
|
|
|
|
err = mlx5_cmd_invoke(dev, inb, outb, out, out_size, callback, context,
|
|
pages_queue, &status);
|
|
if (err)
|
|
goto out_out;
|
|
|
|
mlx5_core_dbg(dev, "err %d, status %d\n", err, status);
|
|
if (status) {
|
|
err = status_to_err(status);
|
|
goto out_out;
|
|
}
|
|
|
|
if (!callback)
|
|
err = mlx5_copy_from_msg(out, outb, out_size);
|
|
|
|
out_out:
|
|
if (!callback)
|
|
mlx5_free_cmd_msg(dev, outb);
|
|
|
|
out_in:
|
|
if (!callback)
|
|
free_msg(dev, inb);
|
|
return err;
|
|
}
|
|
|
|
int mlx5_cmd_exec(struct mlx5_core_dev *dev, void *in, int in_size, void *out,
|
|
int out_size)
|
|
{
|
|
return cmd_exec(dev, in, in_size, out, out_size, NULL, NULL);
|
|
}
|
|
EXPORT_SYMBOL(mlx5_cmd_exec);
|
|
|
|
int mlx5_cmd_exec_cb(struct mlx5_core_dev *dev, void *in, int in_size,
|
|
void *out, int out_size, mlx5_cmd_cbk_t callback,
|
|
void *context)
|
|
{
|
|
return cmd_exec(dev, in, in_size, out, out_size, callback, context);
|
|
}
|
|
EXPORT_SYMBOL(mlx5_cmd_exec_cb);
|
|
|
|
static void destroy_msg_cache(struct mlx5_core_dev *dev)
|
|
{
|
|
struct mlx5_cmd *cmd = &dev->cmd;
|
|
struct mlx5_cmd_msg *msg;
|
|
struct mlx5_cmd_msg *n;
|
|
|
|
list_for_each_entry_safe(msg, n, &cmd->cache.large.head, list) {
|
|
list_del(&msg->list);
|
|
mlx5_free_cmd_msg(dev, msg);
|
|
}
|
|
|
|
list_for_each_entry_safe(msg, n, &cmd->cache.med.head, list) {
|
|
list_del(&msg->list);
|
|
mlx5_free_cmd_msg(dev, msg);
|
|
}
|
|
}
|
|
|
|
static int create_msg_cache(struct mlx5_core_dev *dev)
|
|
{
|
|
struct mlx5_cmd *cmd = &dev->cmd;
|
|
struct mlx5_cmd_msg *msg;
|
|
int err;
|
|
int i;
|
|
|
|
spin_lock_init(&cmd->cache.large.lock);
|
|
INIT_LIST_HEAD(&cmd->cache.large.head);
|
|
spin_lock_init(&cmd->cache.med.lock);
|
|
INIT_LIST_HEAD(&cmd->cache.med.head);
|
|
|
|
for (i = 0; i < NUM_LONG_LISTS; i++) {
|
|
msg = mlx5_alloc_cmd_msg(dev, GFP_KERNEL, LONG_LIST_SIZE);
|
|
if (IS_ERR(msg)) {
|
|
err = PTR_ERR(msg);
|
|
goto ex_err;
|
|
}
|
|
msg->cache = &cmd->cache.large;
|
|
list_add_tail(&msg->list, &cmd->cache.large.head);
|
|
}
|
|
|
|
for (i = 0; i < NUM_MED_LISTS; i++) {
|
|
msg = mlx5_alloc_cmd_msg(dev, GFP_KERNEL, MED_LIST_SIZE);
|
|
if (IS_ERR(msg)) {
|
|
err = PTR_ERR(msg);
|
|
goto ex_err;
|
|
}
|
|
msg->cache = &cmd->cache.med;
|
|
list_add_tail(&msg->list, &cmd->cache.med.head);
|
|
}
|
|
|
|
return 0;
|
|
|
|
ex_err:
|
|
destroy_msg_cache(dev);
|
|
return err;
|
|
}
|
|
|
|
static int alloc_cmd_page(struct mlx5_core_dev *dev, struct mlx5_cmd *cmd)
|
|
{
|
|
struct device *ddev = &dev->pdev->dev;
|
|
|
|
cmd->cmd_alloc_buf = dma_zalloc_coherent(ddev, MLX5_ADAPTER_PAGE_SIZE,
|
|
&cmd->alloc_dma, GFP_KERNEL);
|
|
if (!cmd->cmd_alloc_buf)
|
|
return -ENOMEM;
|
|
|
|
/* make sure it is aligned to 4K */
|
|
if (!((uintptr_t)cmd->cmd_alloc_buf & (MLX5_ADAPTER_PAGE_SIZE - 1))) {
|
|
cmd->cmd_buf = cmd->cmd_alloc_buf;
|
|
cmd->dma = cmd->alloc_dma;
|
|
cmd->alloc_size = MLX5_ADAPTER_PAGE_SIZE;
|
|
return 0;
|
|
}
|
|
|
|
dma_free_coherent(ddev, MLX5_ADAPTER_PAGE_SIZE, cmd->cmd_alloc_buf,
|
|
cmd->alloc_dma);
|
|
cmd->cmd_alloc_buf = dma_zalloc_coherent(ddev,
|
|
2 * MLX5_ADAPTER_PAGE_SIZE - 1,
|
|
&cmd->alloc_dma, GFP_KERNEL);
|
|
if (!cmd->cmd_alloc_buf)
|
|
return -ENOMEM;
|
|
|
|
cmd->cmd_buf = PTR_ALIGN(cmd->cmd_alloc_buf, MLX5_ADAPTER_PAGE_SIZE);
|
|
cmd->dma = ALIGN(cmd->alloc_dma, MLX5_ADAPTER_PAGE_SIZE);
|
|
cmd->alloc_size = 2 * MLX5_ADAPTER_PAGE_SIZE - 1;
|
|
return 0;
|
|
}
|
|
|
|
static void free_cmd_page(struct mlx5_core_dev *dev, struct mlx5_cmd *cmd)
|
|
{
|
|
struct device *ddev = &dev->pdev->dev;
|
|
|
|
dma_free_coherent(ddev, cmd->alloc_size, cmd->cmd_alloc_buf,
|
|
cmd->alloc_dma);
|
|
}
|
|
|
|
int mlx5_cmd_init(struct mlx5_core_dev *dev)
|
|
{
|
|
int size = sizeof(struct mlx5_cmd_prot_block);
|
|
int align = roundup_pow_of_two(size);
|
|
struct mlx5_cmd *cmd = &dev->cmd;
|
|
u32 cmd_h, cmd_l;
|
|
u16 cmd_if_rev;
|
|
int err;
|
|
int i;
|
|
|
|
memset(cmd, 0, sizeof(*cmd));
|
|
cmd_if_rev = cmdif_rev(dev);
|
|
if (cmd_if_rev != CMD_IF_REV) {
|
|
dev_err(&dev->pdev->dev,
|
|
"Driver cmdif rev(%d) differs from firmware's(%d)\n",
|
|
CMD_IF_REV, cmd_if_rev);
|
|
return -EINVAL;
|
|
}
|
|
|
|
cmd->pool = pci_pool_create("mlx5_cmd", dev->pdev, size, align, 0);
|
|
if (!cmd->pool)
|
|
return -ENOMEM;
|
|
|
|
err = alloc_cmd_page(dev, cmd);
|
|
if (err)
|
|
goto err_free_pool;
|
|
|
|
cmd_l = ioread32be(&dev->iseg->cmdq_addr_l_sz) & 0xff;
|
|
cmd->log_sz = cmd_l >> 4 & 0xf;
|
|
cmd->log_stride = cmd_l & 0xf;
|
|
if (1 << cmd->log_sz > MLX5_MAX_COMMANDS) {
|
|
dev_err(&dev->pdev->dev, "firmware reports too many outstanding commands %d\n",
|
|
1 << cmd->log_sz);
|
|
err = -EINVAL;
|
|
goto err_free_page;
|
|
}
|
|
|
|
if (cmd->log_sz + cmd->log_stride > MLX5_ADAPTER_PAGE_SHIFT) {
|
|
dev_err(&dev->pdev->dev, "command queue size overflow\n");
|
|
err = -EINVAL;
|
|
goto err_free_page;
|
|
}
|
|
|
|
cmd->checksum_disabled = 1;
|
|
cmd->max_reg_cmds = (1 << cmd->log_sz) - 1;
|
|
cmd->bitmask = (1 << cmd->max_reg_cmds) - 1;
|
|
|
|
cmd->cmdif_rev = ioread32be(&dev->iseg->cmdif_rev_fw_sub) >> 16;
|
|
if (cmd->cmdif_rev > CMD_IF_REV) {
|
|
dev_err(&dev->pdev->dev, "driver does not support command interface version. driver %d, firmware %d\n",
|
|
CMD_IF_REV, cmd->cmdif_rev);
|
|
err = -ENOTSUPP;
|
|
goto err_free_page;
|
|
}
|
|
|
|
spin_lock_init(&cmd->alloc_lock);
|
|
spin_lock_init(&cmd->token_lock);
|
|
for (i = 0; i < ARRAY_SIZE(cmd->stats); i++)
|
|
spin_lock_init(&cmd->stats[i].lock);
|
|
|
|
sema_init(&cmd->sem, cmd->max_reg_cmds);
|
|
sema_init(&cmd->pages_sem, 1);
|
|
|
|
cmd_h = (u32)((u64)(cmd->dma) >> 32);
|
|
cmd_l = (u32)(cmd->dma);
|
|
if (cmd_l & 0xfff) {
|
|
dev_err(&dev->pdev->dev, "invalid command queue address\n");
|
|
err = -ENOMEM;
|
|
goto err_free_page;
|
|
}
|
|
|
|
iowrite32be(cmd_h, &dev->iseg->cmdq_addr_h);
|
|
iowrite32be(cmd_l, &dev->iseg->cmdq_addr_l_sz);
|
|
|
|
/* Make sure firmware sees the complete address before we proceed */
|
|
wmb();
|
|
|
|
mlx5_core_dbg(dev, "descriptor at dma 0x%llx\n", (unsigned long long)(cmd->dma));
|
|
|
|
cmd->mode = CMD_MODE_POLLING;
|
|
|
|
err = create_msg_cache(dev);
|
|
if (err) {
|
|
dev_err(&dev->pdev->dev, "failed to create command cache\n");
|
|
goto err_free_page;
|
|
}
|
|
|
|
set_wqname(dev);
|
|
cmd->wq = create_singlethread_workqueue(cmd->wq_name);
|
|
if (!cmd->wq) {
|
|
dev_err(&dev->pdev->dev, "failed to create command workqueue\n");
|
|
err = -ENOMEM;
|
|
goto err_cache;
|
|
}
|
|
|
|
err = create_debugfs_files(dev);
|
|
if (err) {
|
|
err = -ENOMEM;
|
|
goto err_wq;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_wq:
|
|
destroy_workqueue(cmd->wq);
|
|
|
|
err_cache:
|
|
destroy_msg_cache(dev);
|
|
|
|
err_free_page:
|
|
free_cmd_page(dev, cmd);
|
|
|
|
err_free_pool:
|
|
pci_pool_destroy(cmd->pool);
|
|
|
|
return err;
|
|
}
|
|
EXPORT_SYMBOL(mlx5_cmd_init);
|
|
|
|
void mlx5_cmd_cleanup(struct mlx5_core_dev *dev)
|
|
{
|
|
struct mlx5_cmd *cmd = &dev->cmd;
|
|
|
|
clean_debug_files(dev);
|
|
destroy_workqueue(cmd->wq);
|
|
destroy_msg_cache(dev);
|
|
free_cmd_page(dev, cmd);
|
|
pci_pool_destroy(cmd->pool);
|
|
}
|
|
EXPORT_SYMBOL(mlx5_cmd_cleanup);
|
|
|
|
static const char *cmd_status_str(u8 status)
|
|
{
|
|
switch (status) {
|
|
case MLX5_CMD_STAT_OK:
|
|
return "OK";
|
|
case MLX5_CMD_STAT_INT_ERR:
|
|
return "internal error";
|
|
case MLX5_CMD_STAT_BAD_OP_ERR:
|
|
return "bad operation";
|
|
case MLX5_CMD_STAT_BAD_PARAM_ERR:
|
|
return "bad parameter";
|
|
case MLX5_CMD_STAT_BAD_SYS_STATE_ERR:
|
|
return "bad system state";
|
|
case MLX5_CMD_STAT_BAD_RES_ERR:
|
|
return "bad resource";
|
|
case MLX5_CMD_STAT_RES_BUSY:
|
|
return "resource busy";
|
|
case MLX5_CMD_STAT_LIM_ERR:
|
|
return "limits exceeded";
|
|
case MLX5_CMD_STAT_BAD_RES_STATE_ERR:
|
|
return "bad resource state";
|
|
case MLX5_CMD_STAT_IX_ERR:
|
|
return "bad index";
|
|
case MLX5_CMD_STAT_NO_RES_ERR:
|
|
return "no resources";
|
|
case MLX5_CMD_STAT_BAD_INP_LEN_ERR:
|
|
return "bad input length";
|
|
case MLX5_CMD_STAT_BAD_OUTP_LEN_ERR:
|
|
return "bad output length";
|
|
case MLX5_CMD_STAT_BAD_QP_STATE_ERR:
|
|
return "bad QP state";
|
|
case MLX5_CMD_STAT_BAD_PKT_ERR:
|
|
return "bad packet (discarded)";
|
|
case MLX5_CMD_STAT_BAD_SIZE_OUTS_CQES_ERR:
|
|
return "bad size too many outstanding CQEs";
|
|
default:
|
|
return "unknown status";
|
|
}
|
|
}
|
|
|
|
static int cmd_status_to_err(u8 status)
|
|
{
|
|
switch (status) {
|
|
case MLX5_CMD_STAT_OK: return 0;
|
|
case MLX5_CMD_STAT_INT_ERR: return -EIO;
|
|
case MLX5_CMD_STAT_BAD_OP_ERR: return -EINVAL;
|
|
case MLX5_CMD_STAT_BAD_PARAM_ERR: return -EINVAL;
|
|
case MLX5_CMD_STAT_BAD_SYS_STATE_ERR: return -EIO;
|
|
case MLX5_CMD_STAT_BAD_RES_ERR: return -EINVAL;
|
|
case MLX5_CMD_STAT_RES_BUSY: return -EBUSY;
|
|
case MLX5_CMD_STAT_LIM_ERR: return -ENOMEM;
|
|
case MLX5_CMD_STAT_BAD_RES_STATE_ERR: return -EINVAL;
|
|
case MLX5_CMD_STAT_IX_ERR: return -EINVAL;
|
|
case MLX5_CMD_STAT_NO_RES_ERR: return -EAGAIN;
|
|
case MLX5_CMD_STAT_BAD_INP_LEN_ERR: return -EIO;
|
|
case MLX5_CMD_STAT_BAD_OUTP_LEN_ERR: return -EIO;
|
|
case MLX5_CMD_STAT_BAD_QP_STATE_ERR: return -EINVAL;
|
|
case MLX5_CMD_STAT_BAD_PKT_ERR: return -EINVAL;
|
|
case MLX5_CMD_STAT_BAD_SIZE_OUTS_CQES_ERR: return -EINVAL;
|
|
default: return -EIO;
|
|
}
|
|
}
|
|
|
|
/* this will be available till all the commands use set/get macros */
|
|
int mlx5_cmd_status_to_err(struct mlx5_outbox_hdr *hdr)
|
|
{
|
|
if (!hdr->status)
|
|
return 0;
|
|
|
|
pr_warn("command failed, status %s(0x%x), syndrome 0x%x\n",
|
|
cmd_status_str(hdr->status), hdr->status,
|
|
be32_to_cpu(hdr->syndrome));
|
|
|
|
return cmd_status_to_err(hdr->status);
|
|
}
|
|
|
|
int mlx5_cmd_status_to_err_v2(void *ptr)
|
|
{
|
|
u32 syndrome;
|
|
u8 status;
|
|
|
|
status = be32_to_cpu(*(__be32 *)ptr) >> 24;
|
|
if (!status)
|
|
return 0;
|
|
|
|
syndrome = be32_to_cpu(*(__be32 *)(ptr + 4));
|
|
|
|
pr_warn("command failed, status %s(0x%x), syndrome 0x%x\n",
|
|
cmd_status_str(status), status, syndrome);
|
|
|
|
return cmd_status_to_err(status);
|
|
}
|