238 lines
6.1 KiB
C
238 lines
6.1 KiB
C
/*
|
|
* Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
|
|
*
|
|
* This software is available to you under a choice of one of two
|
|
* licenses. You may choose to be licensed under the terms of the GNU
|
|
* General Public License (GPL) Version 2, available from the file
|
|
* COPYING in the main directory of this source tree, or the
|
|
* OpenIB.org BSD license below:
|
|
*
|
|
* Redistribution and use in source and binary forms, with or
|
|
* without modification, are permitted provided that the following
|
|
* conditions are met:
|
|
*
|
|
* - Redistributions of source code must retain the above
|
|
* copyright notice, this list of conditions and the following
|
|
* disclaimer.
|
|
*
|
|
* - Redistributions in binary form must reproduce the above
|
|
* copyright notice, this list of conditions and the following
|
|
* disclaimer in the documentation and/or other materials
|
|
* provided with the distribution.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
|
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
|
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
|
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
* SOFTWARE.
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/hardirq.h>
|
|
#include <linux/mlx5/driver.h>
|
|
#include <linux/mlx5/cmd.h>
|
|
#include <rdma/ib_verbs.h>
|
|
#include <linux/mlx5/cq.h>
|
|
#include "mlx5_core.h"
|
|
|
|
void mlx5_cq_completion(struct mlx5_core_dev *dev, u32 cqn)
|
|
{
|
|
struct mlx5_core_cq *cq;
|
|
struct mlx5_cq_table *table = &dev->priv.cq_table;
|
|
|
|
spin_lock(&table->lock);
|
|
cq = radix_tree_lookup(&table->tree, cqn);
|
|
if (likely(cq))
|
|
atomic_inc(&cq->refcount);
|
|
spin_unlock(&table->lock);
|
|
|
|
if (!cq) {
|
|
mlx5_core_warn(dev, "Completion event for bogus CQ 0x%x\n", cqn);
|
|
return;
|
|
}
|
|
|
|
++cq->arm_sn;
|
|
|
|
cq->comp(cq);
|
|
|
|
if (atomic_dec_and_test(&cq->refcount))
|
|
complete(&cq->free);
|
|
}
|
|
|
|
void mlx5_cq_event(struct mlx5_core_dev *dev, u32 cqn, int event_type)
|
|
{
|
|
struct mlx5_cq_table *table = &dev->priv.cq_table;
|
|
struct mlx5_core_cq *cq;
|
|
|
|
spin_lock(&table->lock);
|
|
|
|
cq = radix_tree_lookup(&table->tree, cqn);
|
|
if (cq)
|
|
atomic_inc(&cq->refcount);
|
|
|
|
spin_unlock(&table->lock);
|
|
|
|
if (!cq) {
|
|
mlx5_core_warn(dev, "Async event for bogus CQ 0x%x\n", cqn);
|
|
return;
|
|
}
|
|
|
|
cq->event(cq, event_type);
|
|
|
|
if (atomic_dec_and_test(&cq->refcount))
|
|
complete(&cq->free);
|
|
}
|
|
|
|
|
|
int mlx5_core_create_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq,
|
|
struct mlx5_create_cq_mbox_in *in, int inlen)
|
|
{
|
|
int err;
|
|
struct mlx5_cq_table *table = &dev->priv.cq_table;
|
|
struct mlx5_create_cq_mbox_out out;
|
|
struct mlx5_destroy_cq_mbox_in din;
|
|
struct mlx5_destroy_cq_mbox_out dout;
|
|
|
|
in->hdr.opcode = cpu_to_be16(MLX5_CMD_OP_CREATE_CQ);
|
|
memset(&out, 0, sizeof(out));
|
|
err = mlx5_cmd_exec(dev, in, inlen, &out, sizeof(out));
|
|
if (err)
|
|
return err;
|
|
|
|
if (out.hdr.status)
|
|
return mlx5_cmd_status_to_err(&out.hdr);
|
|
|
|
cq->cqn = be32_to_cpu(out.cqn) & 0xffffff;
|
|
cq->cons_index = 0;
|
|
cq->arm_sn = 0;
|
|
atomic_set(&cq->refcount, 1);
|
|
init_completion(&cq->free);
|
|
|
|
spin_lock_irq(&table->lock);
|
|
err = radix_tree_insert(&table->tree, cq->cqn, cq);
|
|
spin_unlock_irq(&table->lock);
|
|
if (err)
|
|
goto err_cmd;
|
|
|
|
cq->pid = current->pid;
|
|
err = mlx5_debug_cq_add(dev, cq);
|
|
if (err)
|
|
mlx5_core_dbg(dev, "failed adding CP 0x%x to debug file system\n",
|
|
cq->cqn);
|
|
|
|
return 0;
|
|
|
|
err_cmd:
|
|
memset(&din, 0, sizeof(din));
|
|
memset(&dout, 0, sizeof(dout));
|
|
din.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_DESTROY_CQ);
|
|
mlx5_cmd_exec(dev, &din, sizeof(din), &dout, sizeof(dout));
|
|
return err;
|
|
}
|
|
EXPORT_SYMBOL(mlx5_core_create_cq);
|
|
|
|
int mlx5_core_destroy_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq)
|
|
{
|
|
struct mlx5_cq_table *table = &dev->priv.cq_table;
|
|
struct mlx5_destroy_cq_mbox_in in;
|
|
struct mlx5_destroy_cq_mbox_out out;
|
|
struct mlx5_core_cq *tmp;
|
|
int err;
|
|
|
|
spin_lock_irq(&table->lock);
|
|
tmp = radix_tree_delete(&table->tree, cq->cqn);
|
|
spin_unlock_irq(&table->lock);
|
|
if (!tmp) {
|
|
mlx5_core_warn(dev, "cq 0x%x not found in tree\n", cq->cqn);
|
|
return -EINVAL;
|
|
}
|
|
if (tmp != cq) {
|
|
mlx5_core_warn(dev, "corruption on srqn 0x%x\n", cq->cqn);
|
|
return -EINVAL;
|
|
}
|
|
|
|
memset(&in, 0, sizeof(in));
|
|
memset(&out, 0, sizeof(out));
|
|
in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_DESTROY_CQ);
|
|
in.cqn = cpu_to_be32(cq->cqn);
|
|
err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
|
|
if (err)
|
|
return err;
|
|
|
|
if (out.hdr.status)
|
|
return mlx5_cmd_status_to_err(&out.hdr);
|
|
|
|
synchronize_irq(cq->irqn);
|
|
|
|
mlx5_debug_cq_remove(dev, cq);
|
|
if (atomic_dec_and_test(&cq->refcount))
|
|
complete(&cq->free);
|
|
wait_for_completion(&cq->free);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(mlx5_core_destroy_cq);
|
|
|
|
int mlx5_core_query_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq,
|
|
struct mlx5_query_cq_mbox_out *out)
|
|
{
|
|
struct mlx5_query_cq_mbox_in in;
|
|
int err;
|
|
|
|
memset(&in, 0, sizeof(in));
|
|
memset(out, 0, sizeof(*out));
|
|
|
|
in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_QUERY_CQ);
|
|
in.cqn = cpu_to_be32(cq->cqn);
|
|
err = mlx5_cmd_exec(dev, &in, sizeof(in), out, sizeof(*out));
|
|
if (err)
|
|
return err;
|
|
|
|
if (out->hdr.status)
|
|
return mlx5_cmd_status_to_err(&out->hdr);
|
|
|
|
return err;
|
|
}
|
|
EXPORT_SYMBOL(mlx5_core_query_cq);
|
|
|
|
|
|
int mlx5_core_modify_cq(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq,
|
|
struct mlx5_modify_cq_mbox_in *in, int in_sz)
|
|
{
|
|
struct mlx5_modify_cq_mbox_out out;
|
|
int err;
|
|
|
|
memset(&out, 0, sizeof(out));
|
|
in->hdr.opcode = cpu_to_be16(MLX5_CMD_OP_MODIFY_CQ);
|
|
err = mlx5_cmd_exec(dev, in, in_sz, &out, sizeof(out));
|
|
if (err)
|
|
return err;
|
|
|
|
if (out.hdr.status)
|
|
return mlx5_cmd_status_to_err(&out.hdr);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(mlx5_core_modify_cq);
|
|
|
|
int mlx5_init_cq_table(struct mlx5_core_dev *dev)
|
|
{
|
|
struct mlx5_cq_table *table = &dev->priv.cq_table;
|
|
int err;
|
|
|
|
spin_lock_init(&table->lock);
|
|
INIT_RADIX_TREE(&table->tree, GFP_ATOMIC);
|
|
err = mlx5_cq_debugfs_init(dev);
|
|
|
|
return err;
|
|
}
|
|
|
|
void mlx5_cleanup_cq_table(struct mlx5_core_dev *dev)
|
|
{
|
|
mlx5_cq_debugfs_cleanup(dev);
|
|
}
|