[linux-block.git] / drivers / net / ethernet / mellanox / mlx5 / core / mr.c

/*
 * Copyright (c) 2013-2015, 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/kernel.h>
#include <linux/module.h>
#include <linux/mlx5/driver.h>
#include <linux/mlx5/cmd.h>
#include "mlx5_core.h"

void mlx5_init_mr_table(struct mlx5_core_dev *dev)
{
	struct mlx5_mr_table *table = &dev->priv.mr_table;

	memset(table, 0, sizeof(*table));
	rwlock_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(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr,
			  struct mlx5_create_mkey_mbox_in *in, int inlen,
			  mlx5_cmd_cbk_t callback, void *context,
			  struct mlx5_create_mkey_mbox_out *out)
{
	struct mlx5_mr_table *table = &dev->priv.mr_table;
	struct mlx5_create_mkey_mbox_out lout;
	int err;
	u8 key;

	memset(&lout, 0, sizeof(lout));
	spin_lock_irq(&dev->priv.mkey_lock);
	key = dev->priv.mkey_key++;
	spin_unlock_irq(&dev->priv.mkey_lock);
	in->seg.qpn_mkey7_0 |= cpu_to_be32(key);
	in->hdr.opcode = cpu_to_be16(MLX5_CMD_OP_CREATE_MKEY);
	if (callback) {
		err = mlx5_cmd_exec_cb(dev, in, inlen, out, sizeof(*out),
				       callback, context);
		return err;
	} else {
		err = mlx5_cmd_exec(dev, in, inlen, &lout, sizeof(lout));
	}

	if (err) {
		mlx5_core_dbg(dev, "cmd exec failed %d\n", err);
		return err;
	}

	if (lout.hdr.status) {
		mlx5_core_dbg(dev, "status %d\n", lout.hdr.status);
		return mlx5_cmd_status_to_err(&lout.hdr);
	}

	mr->iova = be64_to_cpu(in->seg.start_addr);
	mr->size = be64_to_cpu(in->seg.len);
	mr->key = mlx5_idx_to_mkey(be32_to_cpu(lout.mkey) & 0xffffff) | key;
	mr->pd = be32_to_cpu(in->seg.flags_pd) & 0xffffff;

	mlx5_core_dbg(dev, "out 0x%x, key 0x%x, mkey 0x%x\n",
		      be32_to_cpu(lout.mkey), key, mr->key);

	/* connect to MR tree */
	write_lock_irq(&table->lock);
	err = radix_tree_insert(&table->tree, mlx5_base_mkey(mr->key), mr);
	write_unlock_irq(&table->lock);
	if (err) {
		mlx5_core_warn(dev, "failed radix tree insert of mr 0x%x, %d\n",
			       mlx5_base_mkey(mr->key), err);
		mlx5_core_destroy_mkey(dev, mr);
	}

	return err;
}
EXPORT_SYMBOL(mlx5_core_create_mkey);

int mlx5_core_destroy_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr)
{
	struct mlx5_mr_table *table = &dev->priv.mr_table;
	struct mlx5_destroy_mkey_mbox_in in;
	struct mlx5_destroy_mkey_mbox_out out;
	struct mlx5_core_mr *deleted_mr;
	unsigned long flags;
	int err;

	memset(&in, 0, sizeof(in));
	memset(&out, 0, sizeof(out));

	write_lock_irqsave(&table->lock, flags);
	deleted_mr = radix_tree_delete(&table->tree, mlx5_base_mkey(mr->key));
	write_unlock_irqrestore(&table->lock, flags);
	if (!deleted_mr) {
		mlx5_core_warn(dev, "failed radix tree delete of mr 0x%x\n",
			       mlx5_base_mkey(mr->key));
		return -ENOENT;
	}

	in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_DESTROY_MKEY);
	in.mkey = cpu_to_be32(mlx5_mkey_to_idx(mr->key));
	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_destroy_mkey);

int mlx5_core_query_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr,
			 struct mlx5_query_mkey_mbox_out *out, int outlen)
{
	struct mlx5_query_mkey_mbox_in in;
	int err;

	memset(&in, 0, sizeof(in));
	memset(out, 0, outlen);

	in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_QUERY_MKEY);
	in.mkey = cpu_to_be32(mlx5_mkey_to_idx(mr->key));
	err = mlx5_cmd_exec(dev, &in, sizeof(in), out, outlen);
	if (err)
		return err;

	if (out->hdr.status)
		return mlx5_cmd_status_to_err(&out->hdr);

	return err;
}
EXPORT_SYMBOL(mlx5_core_query_mkey);

int mlx5_core_dump_fill_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr,
			     u32 *mkey)
{
	struct mlx5_query_special_ctxs_mbox_in in;
	struct mlx5_query_special_ctxs_mbox_out out;
	int err;

	memset(&in, 0, sizeof(in));
	memset(&out, 0, sizeof(out));

	in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_QUERY_SPECIAL_CONTEXTS);
	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);

	*mkey = be32_to_cpu(out.dump_fill_mkey);

	return err;
}
EXPORT_SYMBOL(mlx5_core_dump_fill_mkey);

int mlx5_core_create_psv(struct mlx5_core_dev *dev, u32 pdn,
			 int npsvs, u32 *sig_index)
{
	struct mlx5_allocate_psv_in in;
	struct mlx5_allocate_psv_out out;
	int i, err;

	if (npsvs > MLX5_MAX_PSVS)
		return -EINVAL;

	memset(&in, 0, sizeof(in));
	memset(&out, 0, sizeof(out));

	in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_CREATE_PSV);
	in.npsv_pd = cpu_to_be32((npsvs << 28) | pdn);
	err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
	if (err) {
		mlx5_core_err(dev, "cmd exec failed %d\n", err);
		return err;
	}

	if (out.hdr.status) {
		mlx5_core_err(dev, "create_psv bad status %d\n",
			      out.hdr.status);
		return mlx5_cmd_status_to_err(&out.hdr);
	}

	for (i = 0; i < npsvs; i++)
		sig_index[i] = be32_to_cpu(out.psv_idx[i]) & 0xffffff;

	return err;
}
EXPORT_SYMBOL(mlx5_core_create_psv);

int mlx5_core_destroy_psv(struct mlx5_core_dev *dev, int psv_num)
{
	struct mlx5_destroy_psv_in in;
	struct mlx5_destroy_psv_out out;
	int err;

	memset(&in, 0, sizeof(in));
	memset(&out, 0, sizeof(out));

	in.psv_number = cpu_to_be32(psv_num);
	in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_DESTROY_PSV);
	err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
	if (err) {
		mlx5_core_err(dev, "destroy_psv cmd exec failed %d\n", err);
		goto out;
	}

	if (out.hdr.status) {
		mlx5_core_err(dev, "destroy_psv bad status %d\n",
			      out.hdr.status);
		err = mlx5_cmd_status_to_err(&out.hdr);
		goto out;
	}

out:
	return err;
}
EXPORT_SYMBOL(mlx5_core_destroy_psv);
Commit	Line	Data
e126ba97	1	/*
302bdf68	2	* Copyright (c) 2013-2015, Mellanox Technologies. All rights reserved.
e126ba97 EC	3	*
	4	* This software is available to you under a choice of one of two
	5	* licenses. You may choose to be licensed under the terms of the GNU
	6	* General Public License (GPL) Version 2, available from the file
	7	* COPYING in the main directory of this source tree, or the
	8	* OpenIB.org BSD license below:
	9	*
	10	* Redistribution and use in source and binary forms, with or
	11	* without modification, are permitted provided that the following
	12	* conditions are met:
	13	*
	14	* - Redistributions of source code must retain the above
	15	* copyright notice, this list of conditions and the following
	16	* disclaimer.
	17	*
	18	* - Redistributions in binary form must reproduce the above
	19	* copyright notice, this list of conditions and the following
	20	* disclaimer in the documentation and/or other materials
	21	* provided with the distribution.
	22	*
	23	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	24	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	25	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
	26	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
	27	* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
	28	* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	29	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	30	* SOFTWARE.
	31	*/
	32
	33	#include <linux/kernel.h>
	34	#include <linux/module.h>
	35	#include <linux/mlx5/driver.h>
	36	#include <linux/mlx5/cmd.h>
	37	#include "mlx5_core.h"
	38
3bcdb17a SG	39	void mlx5_init_mr_table(struct mlx5_core_dev *dev)
	40	{
	41	struct mlx5_mr_table *table = &dev->priv.mr_table;
	42
a31208b1	43	memset(table, 0, sizeof(*table));
3bcdb17a SG	44	rwlock_init(&table->lock);
	45	INIT_RADIX_TREE(&table->tree, GFP_ATOMIC);
	46	}
	47
	48	void mlx5_cleanup_mr_table(struct mlx5_core_dev *dev)
	49	{
	50	}
	51
e126ba97	52	int mlx5_core_create_mkey(struct mlx5_core_dev dev, struct mlx5_core_mr mr,
746b5583 EC	53	struct mlx5_create_mkey_mbox_in *in, int inlen,
	54	mlx5_cmd_cbk_t callback, void *context,
	55	struct mlx5_create_mkey_mbox_out *out)
e126ba97	56	{
3bcdb17a	57	struct mlx5_mr_table *table = &dev->priv.mr_table;
746b5583	58	struct mlx5_create_mkey_mbox_out lout;
e126ba97 EC	59	int err;
	60	u8 key;
	61
746b5583 EC	62	memset(&lout, 0, sizeof(lout));
746b5583 EC	63	spin_lock_irq(&dev->priv.mkey_lock);
e126ba97	64	key = dev->priv.mkey_key++;
746b5583	65	spin_unlock_irq(&dev->priv.mkey_lock);
e126ba97 EC	66	in->seg.qpn_mkey7_0 \|= cpu_to_be32(key);
e126ba97 EC	67	in->hdr.opcode = cpu_to_be16(MLX5_CMD_OP_CREATE_MKEY);
746b5583 EC	68	if (callback) {
	69	err = mlx5_cmd_exec_cb(dev, in, inlen, out, sizeof(*out),
	70	callback, context);
	71	return err;
	72	} else {
	73	err = mlx5_cmd_exec(dev, in, inlen, &lout, sizeof(lout));
	74	}
	75
e126ba97	76	if (err) {
1a91de28	77	mlx5_core_dbg(dev, "cmd exec failed %d\n", err);
e126ba97 EC	78	return err;
	79	}
	80
746b5583 EC	81	if (lout.hdr.status) {
	82	mlx5_core_dbg(dev, "status %d\n", lout.hdr.status);
	83	return mlx5_cmd_status_to_err(&lout.hdr);
e126ba97 EC	84	}
e126ba97 EC	85
b475598a HE	86	mr->iova = be64_to_cpu(in->seg.start_addr);
b475598a HE	87	mr->size = be64_to_cpu(in->seg.len);
746b5583	88	mr->key = mlx5_idx_to_mkey(be32_to_cpu(lout.mkey) & 0xffffff) \| key;
b475598a HE	89	mr->pd = be32_to_cpu(in->seg.flags_pd) & 0xffffff;
b475598a HE	90
746b5583 EC	91	mlx5_core_dbg(dev, "out 0x%x, key 0x%x, mkey 0x%x\n",
746b5583 EC	92	be32_to_cpu(lout.mkey), key, mr->key);
e126ba97	93
3bcdb17a SG	94	/* connect to MR tree */
	95	write_lock_irq(&table->lock);
	96	err = radix_tree_insert(&table->tree, mlx5_base_mkey(mr->key), mr);
	97	write_unlock_irq(&table->lock);
6ef07a9f SG	98	if (err) {
	99	mlx5_core_warn(dev, "failed radix tree insert of mr 0x%x, %d\n",
	100	mlx5_base_mkey(mr->key), err);
	101	mlx5_core_destroy_mkey(dev, mr);
	102	}
3bcdb17a	103
e126ba97 EC	104	return err;
	105	}
	106	EXPORT_SYMBOL(mlx5_core_create_mkey);
	107
	108	int mlx5_core_destroy_mkey(struct mlx5_core_dev dev, struct mlx5_core_mr mr)
	109	{
3bcdb17a	110	struct mlx5_mr_table *table = &dev->priv.mr_table;
e126ba97 EC	111	struct mlx5_destroy_mkey_mbox_in in;
e126ba97 EC	112	struct mlx5_destroy_mkey_mbox_out out;
6ef07a9f	113	struct mlx5_core_mr *deleted_mr;
3bcdb17a	114	unsigned long flags;
e126ba97 EC	115	int err;
	116
	117	memset(&in, 0, sizeof(in));
	118	memset(&out, 0, sizeof(out));
	119
6ef07a9f SG	120	write_lock_irqsave(&table->lock, flags);
	121	deleted_mr = radix_tree_delete(&table->tree, mlx5_base_mkey(mr->key));
	122	write_unlock_irqrestore(&table->lock, flags);
	123	if (!deleted_mr) {
	124	mlx5_core_warn(dev, "failed radix tree delete of mr 0x%x\n",
	125	mlx5_base_mkey(mr->key));
	126	return -ENOENT;
	127	}
	128
e126ba97 EC	129	in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_DESTROY_MKEY);
	130	in.mkey = cpu_to_be32(mlx5_mkey_to_idx(mr->key));
	131	err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
	132	if (err)
	133	return err;
	134
	135	if (out.hdr.status)
	136	return mlx5_cmd_status_to_err(&out.hdr);
	137
	138	return err;
	139	}
	140	EXPORT_SYMBOL(mlx5_core_destroy_mkey);
	141
	142	int mlx5_core_query_mkey(struct mlx5_core_dev dev, struct mlx5_core_mr mr,
	143	struct mlx5_query_mkey_mbox_out *out, int outlen)
	144	{
60722c2b	145	struct mlx5_query_mkey_mbox_in in;
e126ba97 EC	146	int err;
	147
	148	memset(&in, 0, sizeof(in));
	149	memset(out, 0, outlen);
	150
	151	in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_QUERY_MKEY);
	152	in.mkey = cpu_to_be32(mlx5_mkey_to_idx(mr->key));
	153	err = mlx5_cmd_exec(dev, &in, sizeof(in), out, outlen);
	154	if (err)
	155	return err;
	156
	157	if (out->hdr.status)
	158	return mlx5_cmd_status_to_err(&out->hdr);
	159
	160	return err;
	161	}
	162	EXPORT_SYMBOL(mlx5_core_query_mkey);
	163
	164	int mlx5_core_dump_fill_mkey(struct mlx5_core_dev dev, struct mlx5_core_mr mr,
	165	u32 *mkey)
	166	{
	167	struct mlx5_query_special_ctxs_mbox_in in;
	168	struct mlx5_query_special_ctxs_mbox_out out;
	169	int err;
	170
	171	memset(&in, 0, sizeof(in));
	172	memset(&out, 0, sizeof(out));
	173
	174	in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_QUERY_SPECIAL_CONTEXTS);
	175	err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
	176	if (err)
	177	return err;
	178
	179	if (out.hdr.status)
	180	return mlx5_cmd_status_to_err(&out.hdr);
	181
	182	*mkey = be32_to_cpu(out.dump_fill_mkey);
	183
	184	return err;
	185	}
	186	EXPORT_SYMBOL(mlx5_core_dump_fill_mkey);
3121e3c4 SG	187
	188	int mlx5_core_create_psv(struct mlx5_core_dev *dev, u32 pdn,
	189	int npsvs, u32 *sig_index)
	190	{
	191	struct mlx5_allocate_psv_in in;
	192	struct mlx5_allocate_psv_out out;
	193	int i, err;
	194
	195	if (npsvs > MLX5_MAX_PSVS)
	196	return -EINVAL;
	197
	198	memset(&in, 0, sizeof(in));
	199	memset(&out, 0, sizeof(out));
	200
	201	in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_CREATE_PSV);
	202	in.npsv_pd = cpu_to_be32((npsvs << 28) \| pdn);
	203	err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
	204	if (err) {
	205	mlx5_core_err(dev, "cmd exec failed %d\n", err);
	206	return err;
	207	}
	208
	209	if (out.hdr.status) {
1a91de28 JP	210	mlx5_core_err(dev, "create_psv bad status %d\n",
1a91de28 JP	211	out.hdr.status);
3121e3c4 SG	212	return mlx5_cmd_status_to_err(&out.hdr);
	213	}
	214
	215	for (i = 0; i < npsvs; i++)
	216	sig_index[i] = be32_to_cpu(out.psv_idx[i]) & 0xffffff;
	217
	218	return err;
	219	}
	220	EXPORT_SYMBOL(mlx5_core_create_psv);
	221
	222	int mlx5_core_destroy_psv(struct mlx5_core_dev *dev, int psv_num)
	223	{
	224	struct mlx5_destroy_psv_in in;
	225	struct mlx5_destroy_psv_out out;
	226	int err;
	227
	228	memset(&in, 0, sizeof(in));
	229	memset(&out, 0, sizeof(out));
	230
	231	in.psv_number = cpu_to_be32(psv_num);
	232	in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_DESTROY_PSV);
	233	err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
	234	if (err) {
	235	mlx5_core_err(dev, "destroy_psv cmd exec failed %d\n", err);
	236	goto out;
	237	}
	238
	239	if (out.hdr.status) {
1a91de28 JP	240	mlx5_core_err(dev, "destroy_psv bad status %d\n",
1a91de28 JP	241	out.hdr.status);
3121e3c4 SG	242	err = mlx5_cmd_status_to_err(&out.hdr);
	243	goto out;
	244	}
	245
	246	out:
	247	return err;
	248	}
	249	EXPORT_SYMBOL(mlx5_core_destroy_psv);