/*-
* Copyright (c) 2013-2018, Mellanox Technologies, Ltd. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS `AS IS' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <dev/mlx5/driver.h>
#include "mlx5_core.h"
static int mlx5_relaxed_ordering_write;
SYSCTL_INT(_hw_mlx5, OID_AUTO, relaxed_ordering_write, CTLFLAG_RWTUN,
&mlx5_relaxed_ordering_write, 0,
"Set to enable relaxed ordering for PCIe writes");
void mlx5_init_mr_table(struct mlx5_core_dev *dev)
{
struct mlx5_mr_table *table = &dev->priv.mr_table;
memset(table, 0, sizeof(*table));
spin_lock_init(&table->lock);
INIT_RADIX_TREE(&table->tree, GFP_ATOMIC);
}
void mlx5_cleanup_mr_table(struct mlx5_core_dev *dev)
{
}
int mlx5_core_create_mkey_cb(struct mlx5_core_dev *dev,
struct mlx5_core_mr *mkey,
u32 *in, int inlen,
u32 *out, int outlen,
mlx5_cmd_cbk_t callback, void *context)
{
struct mlx5_mr_table *table = &dev->priv.mr_table;
u32 lout[MLX5_ST_SZ_DW(create_mkey_out)] = {0};
u32 mkey_index;
void *mkc;
unsigned long flags;
int err;
u8 key;
spin_lock_irq(&dev->priv.mkey_lock);
key = dev->priv.mkey_key++;
spin_unlock_irq(&dev->priv.mkey_lock);
mkc = MLX5_ADDR_OF(create_mkey_in, in, memory_key_mkey_entry);
MLX5_SET(create_mkey_in, in, opcode, MLX5_CMD_OP_CREATE_MKEY);
MLX5_SET(mkc, mkc, mkey_7_0, key);
if (mlx5_relaxed_ordering_write != 0) {
if (MLX5_CAP_GEN(dev, relaxed_ordering_write))
MLX5_SET(mkc, mkc, relaxed_ordering_write, 1);
else
return (-EPROTONOSUPPORT);
}
if (callback)
return mlx5_cmd_exec_cb(dev, in, inlen, out, outlen,
callback, context);
err = mlx5_cmd_exec(dev, in, inlen, lout, sizeof(lout));
if (err) {
mlx5_core_dbg(dev, "cmd exec failed %d\n", err);
return err;
}
mkey_index = MLX5_GET(create_mkey_out, lout, mkey_index);
mkey->iova = MLX5_GET64(mkc, mkc, start_addr);
mkey->size = MLX5_GET64(mkc, mkc, len);
mkey->key = mlx5_idx_to_mkey(mkey_index) | key;
mkey->pd = MLX5_GET(mkc, mkc, pd);
mlx5_core_dbg(dev, "out 0x%x, key 0x%x, mkey 0x%x\n",
mkey_index, key, mkey->key);
/* connect to MR tree */
spin_lock_irqsave(&table->lock, flags);
err = radix_tree_insert(&table->tree, mlx5_mkey_to_idx(mkey->key), mkey);
spin_unlock_irqrestore(&table->lock, flags);
if (err) {
mlx5_core_warn(dev, "failed radix tree insert of mr 0x%x, %d\n",
mkey->key, err);
mlx5_core_destroy_mkey(dev, mkey);
}
return err;
}
EXPORT_SYMBOL(mlx5_core_create_mkey_cb);
int mlx5_core_create_mkey(struct mlx5_core_dev *dev,
struct mlx5_core_mr *mkey,
u32 *in, int inlen)
{
return mlx5_core_create_mkey_cb(dev, mkey, in, inlen,
NULL, 0, NULL, NULL);
}
EXPORT_SYMBOL(mlx5_core_create_mkey);
int mlx5_core_destroy_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mkey)
{
struct mlx5_mr_table *table = &dev->priv.mr_table;
u32 out[MLX5_ST_SZ_DW(destroy_mkey_out)] = {0};
u32 in[MLX5_ST_SZ_DW(destroy_mkey_in)] = {0};
struct mlx5_core_mr *deleted_mr;
unsigned long flags;
spin_lock_irqsave(&table->lock, flags);
deleted_mr = radix_tree_delete(&table->tree, mlx5_mkey_to_idx(mkey->key));
spin_unlock_irqrestore(&table->lock, flags);
if (!deleted_mr) {
mlx5_core_warn(dev, "failed radix tree delete of mr 0x%x\n", mkey->key);
return -ENOENT;
}
MLX5_SET(destroy_mkey_in, in, opcode, MLX5_CMD_OP_DESTROY_MKEY);
MLX5_SET(destroy_mkey_in, in, mkey_index, mlx5_mkey_to_idx(mkey->key));
return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
}
EXPORT_SYMBOL(mlx5_core_destroy_mkey);
int mlx5_core_query_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mkey,
u32 *out, int outlen)
{
u32 in[MLX5_ST_SZ_DW(query_mkey_in)] = {0};
memset(out, 0, outlen);
MLX5_SET(query_mkey_in, in, opcode, MLX5_CMD_OP_QUERY_MKEY);
MLX5_SET(query_mkey_in, in, mkey_index, mlx5_mkey_to_idx(mkey->key));
return mlx5_cmd_exec(dev, in, sizeof(in), out, outlen);
}
EXPORT_SYMBOL(mlx5_core_query_mkey);
int mlx5_core_dump_fill_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *_mkey,
u32 *mkey)
{
u32 out[MLX5_ST_SZ_DW(query_special_contexts_out)] = {0};
u32 in[MLX5_ST_SZ_DW(query_special_contexts_in)] = {0};
int err;
MLX5_SET(query_special_contexts_in, in, opcode,
MLX5_CMD_OP_QUERY_SPECIAL_CONTEXTS);
err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
if (!err)
*mkey = MLX5_GET(query_special_contexts_out, out, dump_fill_mkey);
return err;
}
EXPORT_SYMBOL(mlx5_core_dump_fill_mkey);
static inline u32 mlx5_get_psv(u32 *out, int psv_index)
{
switch (psv_index) {
case 1: return MLX5_GET(create_psv_out, out, psv1_index);
case 2: return MLX5_GET(create_psv_out, out, psv2_index);
case 3: return MLX5_GET(create_psv_out, out, psv3_index);
default: return MLX5_GET(create_psv_out, out, psv0_index);
}
}
int mlx5_core_create_psv(struct mlx5_core_dev *dev, u32 pdn,
int npsvs, u32 *sig_index)
{
u32 out[MLX5_ST_SZ_DW(create_psv_out)] = {0};
u32 in[MLX5_ST_SZ_DW(create_psv_in)] = {0};
int i, err;
if (npsvs > MLX5_MAX_PSVS)
return -EINVAL;
MLX5_SET(create_psv_in, in, opcode, MLX5_CMD_OP_CREATE_PSV);
MLX5_SET(create_psv_in, in, pd, pdn);
MLX5_SET(create_psv_in, in, num_psv, npsvs);
err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
if (err) {
mlx5_core_err(dev, "create_psv cmd exec failed %d\n", err);
return err;
}
for (i = 0; i < npsvs; i++)
sig_index[i] = mlx5_get_psv(out, i);
return err;
}
EXPORT_SYMBOL(mlx5_core_create_psv);
int mlx5_core_destroy_psv(struct mlx5_core_dev *dev, int psv_num)
{
u32 out[MLX5_ST_SZ_DW(destroy_psv_out)] = {0};
u32 in[MLX5_ST_SZ_DW(destroy_psv_in)] = {0};
MLX5_SET(destroy_psv_in, in, opcode, MLX5_CMD_OP_DESTROY_PSV);
MLX5_SET(destroy_psv_in, in, psvn, psv_num);
return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
}
EXPORT_SYMBOL(mlx5_core_destroy_psv);