mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
304 lines
8.2 KiB
304 lines
8.2 KiB
/* |
|
* Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved. |
|
* Copyright (c) 2007, 2008 Mellanox Technologies. 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/mlx4/cmd.h> |
|
#include <linux/mlx4/srq.h> |
|
#include <linux/export.h> |
|
#include <linux/gfp.h> |
|
|
|
#include "mlx4.h" |
|
#include "icm.h" |
|
|
|
void mlx4_srq_event(struct mlx4_dev *dev, u32 srqn, int event_type) |
|
{ |
|
struct mlx4_srq_table *srq_table = &mlx4_priv(dev)->srq_table; |
|
struct mlx4_srq *srq; |
|
|
|
rcu_read_lock(); |
|
srq = radix_tree_lookup(&srq_table->tree, srqn & (dev->caps.num_srqs - 1)); |
|
rcu_read_unlock(); |
|
if (srq) |
|
refcount_inc(&srq->refcount); |
|
else { |
|
mlx4_warn(dev, "Async event for bogus SRQ %08x\n", srqn); |
|
return; |
|
} |
|
|
|
srq->event(srq, event_type); |
|
|
|
if (refcount_dec_and_test(&srq->refcount)) |
|
complete(&srq->free); |
|
} |
|
|
|
static int mlx4_SW2HW_SRQ(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox, |
|
int srq_num) |
|
{ |
|
return mlx4_cmd(dev, mailbox->dma, srq_num, 0, |
|
MLX4_CMD_SW2HW_SRQ, MLX4_CMD_TIME_CLASS_A, |
|
MLX4_CMD_WRAPPED); |
|
} |
|
|
|
static int mlx4_HW2SW_SRQ(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox, |
|
int srq_num) |
|
{ |
|
return mlx4_cmd_box(dev, 0, mailbox ? mailbox->dma : 0, srq_num, |
|
mailbox ? 0 : 1, MLX4_CMD_HW2SW_SRQ, |
|
MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED); |
|
} |
|
|
|
static int mlx4_ARM_SRQ(struct mlx4_dev *dev, int srq_num, int limit_watermark) |
|
{ |
|
return mlx4_cmd(dev, limit_watermark, srq_num, 0, MLX4_CMD_ARM_SRQ, |
|
MLX4_CMD_TIME_CLASS_B, MLX4_CMD_WRAPPED); |
|
} |
|
|
|
static int mlx4_QUERY_SRQ(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox, |
|
int srq_num) |
|
{ |
|
return mlx4_cmd_box(dev, 0, mailbox->dma, srq_num, 0, MLX4_CMD_QUERY_SRQ, |
|
MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED); |
|
} |
|
|
|
int __mlx4_srq_alloc_icm(struct mlx4_dev *dev, int *srqn) |
|
{ |
|
struct mlx4_srq_table *srq_table = &mlx4_priv(dev)->srq_table; |
|
int err; |
|
|
|
|
|
*srqn = mlx4_bitmap_alloc(&srq_table->bitmap); |
|
if (*srqn == -1) |
|
return -ENOMEM; |
|
|
|
err = mlx4_table_get(dev, &srq_table->table, *srqn); |
|
if (err) |
|
goto err_out; |
|
|
|
err = mlx4_table_get(dev, &srq_table->cmpt_table, *srqn); |
|
if (err) |
|
goto err_put; |
|
return 0; |
|
|
|
err_put: |
|
mlx4_table_put(dev, &srq_table->table, *srqn); |
|
|
|
err_out: |
|
mlx4_bitmap_free(&srq_table->bitmap, *srqn, MLX4_NO_RR); |
|
return err; |
|
} |
|
|
|
static int mlx4_srq_alloc_icm(struct mlx4_dev *dev, int *srqn) |
|
{ |
|
u64 out_param; |
|
int err; |
|
|
|
if (mlx4_is_mfunc(dev)) { |
|
err = mlx4_cmd_imm(dev, 0, &out_param, RES_SRQ, |
|
RES_OP_RESERVE_AND_MAP, |
|
MLX4_CMD_ALLOC_RES, |
|
MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED); |
|
if (!err) |
|
*srqn = get_param_l(&out_param); |
|
|
|
return err; |
|
} |
|
return __mlx4_srq_alloc_icm(dev, srqn); |
|
} |
|
|
|
void __mlx4_srq_free_icm(struct mlx4_dev *dev, int srqn) |
|
{ |
|
struct mlx4_srq_table *srq_table = &mlx4_priv(dev)->srq_table; |
|
|
|
mlx4_table_put(dev, &srq_table->cmpt_table, srqn); |
|
mlx4_table_put(dev, &srq_table->table, srqn); |
|
mlx4_bitmap_free(&srq_table->bitmap, srqn, MLX4_NO_RR); |
|
} |
|
|
|
static void mlx4_srq_free_icm(struct mlx4_dev *dev, int srqn) |
|
{ |
|
u64 in_param = 0; |
|
|
|
if (mlx4_is_mfunc(dev)) { |
|
set_param_l(&in_param, srqn); |
|
if (mlx4_cmd(dev, in_param, RES_SRQ, RES_OP_RESERVE_AND_MAP, |
|
MLX4_CMD_FREE_RES, |
|
MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED)) |
|
mlx4_warn(dev, "Failed freeing cq:%d\n", srqn); |
|
return; |
|
} |
|
__mlx4_srq_free_icm(dev, srqn); |
|
} |
|
|
|
int mlx4_srq_alloc(struct mlx4_dev *dev, u32 pdn, u32 cqn, u16 xrcd, |
|
struct mlx4_mtt *mtt, u64 db_rec, struct mlx4_srq *srq) |
|
{ |
|
struct mlx4_srq_table *srq_table = &mlx4_priv(dev)->srq_table; |
|
struct mlx4_cmd_mailbox *mailbox; |
|
struct mlx4_srq_context *srq_context; |
|
u64 mtt_addr; |
|
int err; |
|
|
|
err = mlx4_srq_alloc_icm(dev, &srq->srqn); |
|
if (err) |
|
return err; |
|
|
|
spin_lock_irq(&srq_table->lock); |
|
err = radix_tree_insert(&srq_table->tree, srq->srqn, srq); |
|
spin_unlock_irq(&srq_table->lock); |
|
if (err) |
|
goto err_icm; |
|
|
|
mailbox = mlx4_alloc_cmd_mailbox(dev); |
|
if (IS_ERR(mailbox)) { |
|
err = PTR_ERR(mailbox); |
|
goto err_radix; |
|
} |
|
|
|
srq_context = mailbox->buf; |
|
srq_context->state_logsize_srqn = cpu_to_be32((ilog2(srq->max) << 24) | |
|
srq->srqn); |
|
srq_context->logstride = srq->wqe_shift - 4; |
|
srq_context->xrcd = cpu_to_be16(xrcd); |
|
srq_context->pg_offset_cqn = cpu_to_be32(cqn & 0xffffff); |
|
srq_context->log_page_size = mtt->page_shift - MLX4_ICM_PAGE_SHIFT; |
|
|
|
mtt_addr = mlx4_mtt_addr(dev, mtt); |
|
srq_context->mtt_base_addr_h = mtt_addr >> 32; |
|
srq_context->mtt_base_addr_l = cpu_to_be32(mtt_addr & 0xffffffff); |
|
srq_context->pd = cpu_to_be32(pdn); |
|
srq_context->db_rec_addr = cpu_to_be64(db_rec); |
|
|
|
err = mlx4_SW2HW_SRQ(dev, mailbox, srq->srqn); |
|
mlx4_free_cmd_mailbox(dev, mailbox); |
|
if (err) |
|
goto err_radix; |
|
|
|
refcount_set(&srq->refcount, 1); |
|
init_completion(&srq->free); |
|
|
|
return 0; |
|
|
|
err_radix: |
|
spin_lock_irq(&srq_table->lock); |
|
radix_tree_delete(&srq_table->tree, srq->srqn); |
|
spin_unlock_irq(&srq_table->lock); |
|
|
|
err_icm: |
|
mlx4_srq_free_icm(dev, srq->srqn); |
|
return err; |
|
} |
|
EXPORT_SYMBOL_GPL(mlx4_srq_alloc); |
|
|
|
void mlx4_srq_free(struct mlx4_dev *dev, struct mlx4_srq *srq) |
|
{ |
|
struct mlx4_srq_table *srq_table = &mlx4_priv(dev)->srq_table; |
|
int err; |
|
|
|
err = mlx4_HW2SW_SRQ(dev, NULL, srq->srqn); |
|
if (err) |
|
mlx4_warn(dev, "HW2SW_SRQ failed (%d) for SRQN %06x\n", err, srq->srqn); |
|
|
|
spin_lock_irq(&srq_table->lock); |
|
radix_tree_delete(&srq_table->tree, srq->srqn); |
|
spin_unlock_irq(&srq_table->lock); |
|
|
|
if (refcount_dec_and_test(&srq->refcount)) |
|
complete(&srq->free); |
|
wait_for_completion(&srq->free); |
|
|
|
mlx4_srq_free_icm(dev, srq->srqn); |
|
} |
|
EXPORT_SYMBOL_GPL(mlx4_srq_free); |
|
|
|
int mlx4_srq_arm(struct mlx4_dev *dev, struct mlx4_srq *srq, int limit_watermark) |
|
{ |
|
return mlx4_ARM_SRQ(dev, srq->srqn, limit_watermark); |
|
} |
|
EXPORT_SYMBOL_GPL(mlx4_srq_arm); |
|
|
|
int mlx4_srq_query(struct mlx4_dev *dev, struct mlx4_srq *srq, int *limit_watermark) |
|
{ |
|
struct mlx4_cmd_mailbox *mailbox; |
|
struct mlx4_srq_context *srq_context; |
|
int err; |
|
|
|
mailbox = mlx4_alloc_cmd_mailbox(dev); |
|
if (IS_ERR(mailbox)) |
|
return PTR_ERR(mailbox); |
|
|
|
srq_context = mailbox->buf; |
|
|
|
err = mlx4_QUERY_SRQ(dev, mailbox, srq->srqn); |
|
if (err) |
|
goto err_out; |
|
*limit_watermark = be16_to_cpu(srq_context->limit_watermark); |
|
|
|
err_out: |
|
mlx4_free_cmd_mailbox(dev, mailbox); |
|
return err; |
|
} |
|
EXPORT_SYMBOL_GPL(mlx4_srq_query); |
|
|
|
int mlx4_init_srq_table(struct mlx4_dev *dev) |
|
{ |
|
struct mlx4_srq_table *srq_table = &mlx4_priv(dev)->srq_table; |
|
|
|
spin_lock_init(&srq_table->lock); |
|
INIT_RADIX_TREE(&srq_table->tree, GFP_ATOMIC); |
|
if (mlx4_is_slave(dev)) |
|
return 0; |
|
|
|
return mlx4_bitmap_init(&srq_table->bitmap, dev->caps.num_srqs, |
|
dev->caps.num_srqs - 1, dev->caps.reserved_srqs, 0); |
|
} |
|
|
|
void mlx4_cleanup_srq_table(struct mlx4_dev *dev) |
|
{ |
|
if (mlx4_is_slave(dev)) |
|
return; |
|
mlx4_bitmap_cleanup(&mlx4_priv(dev)->srq_table.bitmap); |
|
} |
|
|
|
struct mlx4_srq *mlx4_srq_lookup(struct mlx4_dev *dev, u32 srqn) |
|
{ |
|
struct mlx4_srq_table *srq_table = &mlx4_priv(dev)->srq_table; |
|
struct mlx4_srq *srq; |
|
|
|
rcu_read_lock(); |
|
srq = radix_tree_lookup(&srq_table->tree, |
|
srqn & (dev->caps.num_srqs - 1)); |
|
rcu_read_unlock(); |
|
|
|
return srq; |
|
} |
|
EXPORT_SYMBOL_GPL(mlx4_srq_lookup);
|
|
|