/*
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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/kernel.h>
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#include <linux/module.h>
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#include <linux/mlx5/driver.h>
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#include <linux/mlx5/cmd.h>
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#include "mlx5_core.h"
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void mlx5_init_mkey_table(struct mlx5_core_dev *dev)
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{
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struct mlx5_mkey_table *table = &dev->priv.mkey_table;
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memset(table, 0, sizeof(*table));
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rwlock_init(&table->lock);
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INIT_RADIX_TREE(&table->tree, GFP_ATOMIC);
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}
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void mlx5_cleanup_mkey_table(struct mlx5_core_dev *dev)
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{
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}
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int mlx5_core_create_mkey_cb(struct mlx5_core_dev *dev,
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struct mlx5_core_mkey *mkey,
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u32 *in, int inlen,
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u32 *out, int outlen,
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mlx5_cmd_cbk_t callback, void *context)
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{
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struct mlx5_mkey_table *table = &dev->priv.mkey_table;
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u32 lout[MLX5_ST_SZ_DW(create_mkey_out)] = {0};
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u32 mkey_index;
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void *mkc;
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int err;
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u8 key;
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spin_lock_irq(&dev->priv.mkey_lock);
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key = dev->priv.mkey_key++;
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spin_unlock_irq(&dev->priv.mkey_lock);
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mkc = MLX5_ADDR_OF(create_mkey_in, in, memory_key_mkey_entry);
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MLX5_SET(create_mkey_in, in, opcode, MLX5_CMD_OP_CREATE_MKEY);
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MLX5_SET(mkc, mkc, mkey_7_0, key);
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if (callback)
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return mlx5_cmd_exec_cb(dev, in, inlen, out, outlen,
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callback, context);
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err = mlx5_cmd_exec(dev, in, inlen, lout, sizeof(lout));
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if (err)
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return err;
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mkey_index = MLX5_GET(create_mkey_out, lout, mkey_index);
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mkey->iova = MLX5_GET64(mkc, mkc, start_addr);
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mkey->size = MLX5_GET64(mkc, mkc, len);
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mkey->key = mlx5_idx_to_mkey(mkey_index) | key;
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mkey->pd = MLX5_GET(mkc, mkc, pd);
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mlx5_core_dbg(dev, "out 0x%x, key 0x%x, mkey 0x%x\n",
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mkey_index, key, mkey->key);
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/* connect to mkey tree */
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write_lock_irq(&table->lock);
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err = radix_tree_insert(&table->tree, mlx5_base_mkey(mkey->key), mkey);
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write_unlock_irq(&table->lock);
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if (err) {
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mlx5_core_warn(dev, "failed radix tree insert of mkey 0x%x, %d\n",
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mlx5_base_mkey(mkey->key), err);
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mlx5_core_destroy_mkey(dev, mkey);
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}
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return err;
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}
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EXPORT_SYMBOL(mlx5_core_create_mkey_cb);
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int mlx5_core_create_mkey(struct mlx5_core_dev *dev,
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struct mlx5_core_mkey *mkey,
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u32 *in, int inlen)
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{
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return mlx5_core_create_mkey_cb(dev, mkey, in, inlen,
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NULL, 0, NULL, NULL);
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}
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EXPORT_SYMBOL(mlx5_core_create_mkey);
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int mlx5_core_destroy_mkey(struct mlx5_core_dev *dev,
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struct mlx5_core_mkey *mkey)
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{
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struct mlx5_mkey_table *table = &dev->priv.mkey_table;
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u32 out[MLX5_ST_SZ_DW(destroy_mkey_out)] = {0};
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u32 in[MLX5_ST_SZ_DW(destroy_mkey_in)] = {0};
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struct mlx5_core_mkey *deleted_mkey;
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unsigned long flags;
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write_lock_irqsave(&table->lock, flags);
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deleted_mkey = radix_tree_delete(&table->tree, mlx5_base_mkey(mkey->key));
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write_unlock_irqrestore(&table->lock, flags);
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if (!deleted_mkey) {
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mlx5_core_dbg(dev, "failed radix tree delete of mkey 0x%x\n",
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mlx5_base_mkey(mkey->key));
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return -ENOENT;
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}
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MLX5_SET(destroy_mkey_in, in, opcode, MLX5_CMD_OP_DESTROY_MKEY);
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MLX5_SET(destroy_mkey_in, in, mkey_index, mlx5_mkey_to_idx(mkey->key));
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return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
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}
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EXPORT_SYMBOL(mlx5_core_destroy_mkey);
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int mlx5_core_query_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mkey *mkey,
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u32 *out, int outlen)
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{
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u32 in[MLX5_ST_SZ_DW(query_mkey_in)] = {0};
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memset(out, 0, outlen);
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MLX5_SET(query_mkey_in, in, opcode, MLX5_CMD_OP_QUERY_MKEY);
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MLX5_SET(query_mkey_in, in, mkey_index, mlx5_mkey_to_idx(mkey->key));
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return mlx5_cmd_exec(dev, in, sizeof(in), out, outlen);
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}
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EXPORT_SYMBOL(mlx5_core_query_mkey);
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static inline u32 mlx5_get_psv(u32 *out, int psv_index)
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{
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switch (psv_index) {
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case 1: return MLX5_GET(create_psv_out, out, psv1_index);
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case 2: return MLX5_GET(create_psv_out, out, psv2_index);
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case 3: return MLX5_GET(create_psv_out, out, psv3_index);
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default: return MLX5_GET(create_psv_out, out, psv0_index);
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}
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}
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int mlx5_core_create_psv(struct mlx5_core_dev *dev, u32 pdn,
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int npsvs, u32 *sig_index)
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{
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u32 out[MLX5_ST_SZ_DW(create_psv_out)] = {0};
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u32 in[MLX5_ST_SZ_DW(create_psv_in)] = {0};
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int i, err;
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if (npsvs > MLX5_MAX_PSVS)
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return -EINVAL;
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MLX5_SET(create_psv_in, in, opcode, MLX5_CMD_OP_CREATE_PSV);
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MLX5_SET(create_psv_in, in, pd, pdn);
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MLX5_SET(create_psv_in, in, num_psv, npsvs);
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err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
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if (err)
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return err;
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for (i = 0; i < npsvs; i++)
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sig_index[i] = mlx5_get_psv(out, i);
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return err;
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}
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EXPORT_SYMBOL(mlx5_core_create_psv);
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int mlx5_core_destroy_psv(struct mlx5_core_dev *dev, int psv_num)
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{
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u32 out[MLX5_ST_SZ_DW(destroy_psv_out)] = {0};
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u32 in[MLX5_ST_SZ_DW(destroy_psv_in)] = {0};
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MLX5_SET(destroy_psv_in, in, opcode, MLX5_CMD_OP_DESTROY_PSV);
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MLX5_SET(destroy_psv_in, in, psvn, psv_num);
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return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
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}
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EXPORT_SYMBOL(mlx5_core_destroy_psv);
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