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.
974 lines
24 KiB
974 lines
24 KiB
/* |
|
* Copyright (c) 2004 Topspin Communications. All rights reserved. |
|
* Copyright (c) 2005, 2006, 2007, 2008 Mellanox Technologies. All rights reserved. |
|
* Copyright (c) 2006, 2007 Cisco Systems, 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/errno.h> |
|
#include <linux/export.h> |
|
#include <linux/slab.h> |
|
#include <linux/kernel.h> |
|
#include <linux/vmalloc.h> |
|
|
|
#include <linux/mlx4/cmd.h> |
|
|
|
#include "mlx4.h" |
|
#include "icm.h" |
|
|
|
static u32 mlx4_buddy_alloc(struct mlx4_buddy *buddy, int order) |
|
{ |
|
int o; |
|
int m; |
|
u32 seg; |
|
|
|
spin_lock(&buddy->lock); |
|
|
|
for (o = order; o <= buddy->max_order; ++o) |
|
if (buddy->num_free[o]) { |
|
m = 1 << (buddy->max_order - o); |
|
seg = find_first_bit(buddy->bits[o], m); |
|
if (seg < m) |
|
goto found; |
|
} |
|
|
|
spin_unlock(&buddy->lock); |
|
return -1; |
|
|
|
found: |
|
clear_bit(seg, buddy->bits[o]); |
|
--buddy->num_free[o]; |
|
|
|
while (o > order) { |
|
--o; |
|
seg <<= 1; |
|
set_bit(seg ^ 1, buddy->bits[o]); |
|
++buddy->num_free[o]; |
|
} |
|
|
|
spin_unlock(&buddy->lock); |
|
|
|
seg <<= order; |
|
|
|
return seg; |
|
} |
|
|
|
static void mlx4_buddy_free(struct mlx4_buddy *buddy, u32 seg, int order) |
|
{ |
|
seg >>= order; |
|
|
|
spin_lock(&buddy->lock); |
|
|
|
while (test_bit(seg ^ 1, buddy->bits[order])) { |
|
clear_bit(seg ^ 1, buddy->bits[order]); |
|
--buddy->num_free[order]; |
|
seg >>= 1; |
|
++order; |
|
} |
|
|
|
set_bit(seg, buddy->bits[order]); |
|
++buddy->num_free[order]; |
|
|
|
spin_unlock(&buddy->lock); |
|
} |
|
|
|
static int mlx4_buddy_init(struct mlx4_buddy *buddy, int max_order) |
|
{ |
|
int i, s; |
|
|
|
buddy->max_order = max_order; |
|
spin_lock_init(&buddy->lock); |
|
|
|
buddy->bits = kcalloc(buddy->max_order + 1, sizeof(long *), |
|
GFP_KERNEL); |
|
buddy->num_free = kcalloc(buddy->max_order + 1, sizeof(*buddy->num_free), |
|
GFP_KERNEL); |
|
if (!buddy->bits || !buddy->num_free) |
|
goto err_out; |
|
|
|
for (i = 0; i <= buddy->max_order; ++i) { |
|
s = BITS_TO_LONGS(1UL << (buddy->max_order - i)); |
|
buddy->bits[i] = kvmalloc_array(s, sizeof(long), GFP_KERNEL | __GFP_ZERO); |
|
if (!buddy->bits[i]) |
|
goto err_out_free; |
|
} |
|
|
|
set_bit(0, buddy->bits[buddy->max_order]); |
|
buddy->num_free[buddy->max_order] = 1; |
|
|
|
return 0; |
|
|
|
err_out_free: |
|
for (i = 0; i <= buddy->max_order; ++i) |
|
kvfree(buddy->bits[i]); |
|
|
|
err_out: |
|
kfree(buddy->bits); |
|
kfree(buddy->num_free); |
|
|
|
return -ENOMEM; |
|
} |
|
|
|
static void mlx4_buddy_cleanup(struct mlx4_buddy *buddy) |
|
{ |
|
int i; |
|
|
|
for (i = 0; i <= buddy->max_order; ++i) |
|
kvfree(buddy->bits[i]); |
|
|
|
kfree(buddy->bits); |
|
kfree(buddy->num_free); |
|
} |
|
|
|
u32 __mlx4_alloc_mtt_range(struct mlx4_dev *dev, int order) |
|
{ |
|
struct mlx4_mr_table *mr_table = &mlx4_priv(dev)->mr_table; |
|
u32 seg; |
|
int seg_order; |
|
u32 offset; |
|
|
|
seg_order = max_t(int, order - log_mtts_per_seg, 0); |
|
|
|
seg = mlx4_buddy_alloc(&mr_table->mtt_buddy, seg_order); |
|
if (seg == -1) |
|
return -1; |
|
|
|
offset = seg * (1 << log_mtts_per_seg); |
|
|
|
if (mlx4_table_get_range(dev, &mr_table->mtt_table, offset, |
|
offset + (1 << order) - 1)) { |
|
mlx4_buddy_free(&mr_table->mtt_buddy, seg, seg_order); |
|
return -1; |
|
} |
|
|
|
return offset; |
|
} |
|
|
|
static u32 mlx4_alloc_mtt_range(struct mlx4_dev *dev, int order) |
|
{ |
|
u64 in_param = 0; |
|
u64 out_param; |
|
int err; |
|
|
|
if (mlx4_is_mfunc(dev)) { |
|
set_param_l(&in_param, order); |
|
err = mlx4_cmd_imm(dev, in_param, &out_param, RES_MTT, |
|
RES_OP_RESERVE_AND_MAP, |
|
MLX4_CMD_ALLOC_RES, |
|
MLX4_CMD_TIME_CLASS_A, |
|
MLX4_CMD_WRAPPED); |
|
if (err) |
|
return -1; |
|
return get_param_l(&out_param); |
|
} |
|
return __mlx4_alloc_mtt_range(dev, order); |
|
} |
|
|
|
int mlx4_mtt_init(struct mlx4_dev *dev, int npages, int page_shift, |
|
struct mlx4_mtt *mtt) |
|
{ |
|
int i; |
|
|
|
if (!npages) { |
|
mtt->order = -1; |
|
mtt->page_shift = MLX4_ICM_PAGE_SHIFT; |
|
return 0; |
|
} else |
|
mtt->page_shift = page_shift; |
|
|
|
for (mtt->order = 0, i = 1; i < npages; i <<= 1) |
|
++mtt->order; |
|
|
|
mtt->offset = mlx4_alloc_mtt_range(dev, mtt->order); |
|
if (mtt->offset == -1) |
|
return -ENOMEM; |
|
|
|
return 0; |
|
} |
|
EXPORT_SYMBOL_GPL(mlx4_mtt_init); |
|
|
|
void __mlx4_free_mtt_range(struct mlx4_dev *dev, u32 offset, int order) |
|
{ |
|
u32 first_seg; |
|
int seg_order; |
|
struct mlx4_mr_table *mr_table = &mlx4_priv(dev)->mr_table; |
|
|
|
seg_order = max_t(int, order - log_mtts_per_seg, 0); |
|
first_seg = offset / (1 << log_mtts_per_seg); |
|
|
|
mlx4_buddy_free(&mr_table->mtt_buddy, first_seg, seg_order); |
|
mlx4_table_put_range(dev, &mr_table->mtt_table, offset, |
|
offset + (1 << order) - 1); |
|
} |
|
|
|
static void mlx4_free_mtt_range(struct mlx4_dev *dev, u32 offset, int order) |
|
{ |
|
u64 in_param = 0; |
|
int err; |
|
|
|
if (mlx4_is_mfunc(dev)) { |
|
set_param_l(&in_param, offset); |
|
set_param_h(&in_param, order); |
|
err = mlx4_cmd(dev, in_param, RES_MTT, RES_OP_RESERVE_AND_MAP, |
|
MLX4_CMD_FREE_RES, |
|
MLX4_CMD_TIME_CLASS_A, |
|
MLX4_CMD_WRAPPED); |
|
if (err) |
|
mlx4_warn(dev, "Failed to free mtt range at:%d order:%d\n", |
|
offset, order); |
|
return; |
|
} |
|
__mlx4_free_mtt_range(dev, offset, order); |
|
} |
|
|
|
void mlx4_mtt_cleanup(struct mlx4_dev *dev, struct mlx4_mtt *mtt) |
|
{ |
|
if (mtt->order < 0) |
|
return; |
|
|
|
mlx4_free_mtt_range(dev, mtt->offset, mtt->order); |
|
} |
|
EXPORT_SYMBOL_GPL(mlx4_mtt_cleanup); |
|
|
|
u64 mlx4_mtt_addr(struct mlx4_dev *dev, struct mlx4_mtt *mtt) |
|
{ |
|
return (u64) mtt->offset * dev->caps.mtt_entry_sz; |
|
} |
|
EXPORT_SYMBOL_GPL(mlx4_mtt_addr); |
|
|
|
static u32 hw_index_to_key(u32 ind) |
|
{ |
|
return (ind >> 24) | (ind << 8); |
|
} |
|
|
|
static u32 key_to_hw_index(u32 key) |
|
{ |
|
return (key << 24) | (key >> 8); |
|
} |
|
|
|
static int mlx4_SW2HW_MPT(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox, |
|
int mpt_index) |
|
{ |
|
return mlx4_cmd(dev, mailbox->dma, mpt_index, |
|
0, MLX4_CMD_SW2HW_MPT, MLX4_CMD_TIME_CLASS_B, |
|
MLX4_CMD_WRAPPED); |
|
} |
|
|
|
static int mlx4_HW2SW_MPT(struct mlx4_dev *dev, struct mlx4_cmd_mailbox *mailbox, |
|
int mpt_index) |
|
{ |
|
return mlx4_cmd_box(dev, 0, mailbox ? mailbox->dma : 0, mpt_index, |
|
!mailbox, MLX4_CMD_HW2SW_MPT, |
|
MLX4_CMD_TIME_CLASS_B, MLX4_CMD_WRAPPED); |
|
} |
|
|
|
/* Must protect against concurrent access */ |
|
int mlx4_mr_hw_get_mpt(struct mlx4_dev *dev, struct mlx4_mr *mmr, |
|
struct mlx4_mpt_entry ***mpt_entry) |
|
{ |
|
int err; |
|
int key = key_to_hw_index(mmr->key) & (dev->caps.num_mpts - 1); |
|
struct mlx4_cmd_mailbox *mailbox = NULL; |
|
|
|
if (mmr->enabled != MLX4_MPT_EN_HW) |
|
return -EINVAL; |
|
|
|
err = mlx4_HW2SW_MPT(dev, NULL, key); |
|
if (err) { |
|
mlx4_warn(dev, "HW2SW_MPT failed (%d).", err); |
|
mlx4_warn(dev, "Most likely the MR has MWs bound to it.\n"); |
|
return err; |
|
} |
|
|
|
mmr->enabled = MLX4_MPT_EN_SW; |
|
|
|
if (!mlx4_is_mfunc(dev)) { |
|
**mpt_entry = mlx4_table_find( |
|
&mlx4_priv(dev)->mr_table.dmpt_table, |
|
key, NULL); |
|
} else { |
|
mailbox = mlx4_alloc_cmd_mailbox(dev); |
|
if (IS_ERR(mailbox)) |
|
return PTR_ERR(mailbox); |
|
|
|
err = mlx4_cmd_box(dev, 0, mailbox->dma, key, |
|
0, MLX4_CMD_QUERY_MPT, |
|
MLX4_CMD_TIME_CLASS_B, |
|
MLX4_CMD_WRAPPED); |
|
if (err) |
|
goto free_mailbox; |
|
|
|
*mpt_entry = (struct mlx4_mpt_entry **)&mailbox->buf; |
|
} |
|
|
|
if (!(*mpt_entry) || !(**mpt_entry)) { |
|
err = -ENOMEM; |
|
goto free_mailbox; |
|
} |
|
|
|
return 0; |
|
|
|
free_mailbox: |
|
mlx4_free_cmd_mailbox(dev, mailbox); |
|
return err; |
|
} |
|
EXPORT_SYMBOL_GPL(mlx4_mr_hw_get_mpt); |
|
|
|
int mlx4_mr_hw_write_mpt(struct mlx4_dev *dev, struct mlx4_mr *mmr, |
|
struct mlx4_mpt_entry **mpt_entry) |
|
{ |
|
int err; |
|
|
|
if (!mlx4_is_mfunc(dev)) { |
|
/* Make sure any changes to this entry are flushed */ |
|
wmb(); |
|
|
|
*(u8 *)(*mpt_entry) = MLX4_MPT_STATUS_HW; |
|
|
|
/* Make sure the new status is written */ |
|
wmb(); |
|
|
|
err = mlx4_SYNC_TPT(dev); |
|
} else { |
|
int key = key_to_hw_index(mmr->key) & (dev->caps.num_mpts - 1); |
|
|
|
struct mlx4_cmd_mailbox *mailbox = |
|
container_of((void *)mpt_entry, struct mlx4_cmd_mailbox, |
|
buf); |
|
|
|
(*mpt_entry)->lkey = 0; |
|
err = mlx4_SW2HW_MPT(dev, mailbox, key); |
|
} |
|
|
|
if (!err) { |
|
mmr->pd = be32_to_cpu((*mpt_entry)->pd_flags) & MLX4_MPT_PD_MASK; |
|
mmr->enabled = MLX4_MPT_EN_HW; |
|
} |
|
return err; |
|
} |
|
EXPORT_SYMBOL_GPL(mlx4_mr_hw_write_mpt); |
|
|
|
void mlx4_mr_hw_put_mpt(struct mlx4_dev *dev, |
|
struct mlx4_mpt_entry **mpt_entry) |
|
{ |
|
if (mlx4_is_mfunc(dev)) { |
|
struct mlx4_cmd_mailbox *mailbox = |
|
container_of((void *)mpt_entry, struct mlx4_cmd_mailbox, |
|
buf); |
|
mlx4_free_cmd_mailbox(dev, mailbox); |
|
} |
|
} |
|
EXPORT_SYMBOL_GPL(mlx4_mr_hw_put_mpt); |
|
|
|
int mlx4_mr_hw_change_pd(struct mlx4_dev *dev, struct mlx4_mpt_entry *mpt_entry, |
|
u32 pdn) |
|
{ |
|
u32 pd_flags = be32_to_cpu(mpt_entry->pd_flags) & ~MLX4_MPT_PD_MASK; |
|
/* The wrapper function will put the slave's id here */ |
|
if (mlx4_is_mfunc(dev)) |
|
pd_flags &= ~MLX4_MPT_PD_VF_MASK; |
|
|
|
mpt_entry->pd_flags = cpu_to_be32(pd_flags | |
|
(pdn & MLX4_MPT_PD_MASK) |
|
| MLX4_MPT_PD_FLAG_EN_INV); |
|
return 0; |
|
} |
|
EXPORT_SYMBOL_GPL(mlx4_mr_hw_change_pd); |
|
|
|
int mlx4_mr_hw_change_access(struct mlx4_dev *dev, |
|
struct mlx4_mpt_entry *mpt_entry, |
|
u32 access) |
|
{ |
|
u32 flags = (be32_to_cpu(mpt_entry->flags) & ~MLX4_PERM_MASK) | |
|
(access & MLX4_PERM_MASK); |
|
|
|
mpt_entry->flags = cpu_to_be32(flags); |
|
return 0; |
|
} |
|
EXPORT_SYMBOL_GPL(mlx4_mr_hw_change_access); |
|
|
|
static int mlx4_mr_alloc_reserved(struct mlx4_dev *dev, u32 mridx, u32 pd, |
|
u64 iova, u64 size, u32 access, int npages, |
|
int page_shift, struct mlx4_mr *mr) |
|
{ |
|
mr->iova = iova; |
|
mr->size = size; |
|
mr->pd = pd; |
|
mr->access = access; |
|
mr->enabled = MLX4_MPT_DISABLED; |
|
mr->key = hw_index_to_key(mridx); |
|
|
|
return mlx4_mtt_init(dev, npages, page_shift, &mr->mtt); |
|
} |
|
|
|
static int mlx4_WRITE_MTT(struct mlx4_dev *dev, |
|
struct mlx4_cmd_mailbox *mailbox, |
|
int num_entries) |
|
{ |
|
return mlx4_cmd(dev, mailbox->dma, num_entries, 0, MLX4_CMD_WRITE_MTT, |
|
MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED); |
|
} |
|
|
|
int __mlx4_mpt_reserve(struct mlx4_dev *dev) |
|
{ |
|
struct mlx4_priv *priv = mlx4_priv(dev); |
|
|
|
return mlx4_bitmap_alloc(&priv->mr_table.mpt_bitmap); |
|
} |
|
|
|
static int mlx4_mpt_reserve(struct mlx4_dev *dev) |
|
{ |
|
u64 out_param; |
|
|
|
if (mlx4_is_mfunc(dev)) { |
|
if (mlx4_cmd_imm(dev, 0, &out_param, RES_MPT, RES_OP_RESERVE, |
|
MLX4_CMD_ALLOC_RES, |
|
MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED)) |
|
return -1; |
|
return get_param_l(&out_param); |
|
} |
|
return __mlx4_mpt_reserve(dev); |
|
} |
|
|
|
void __mlx4_mpt_release(struct mlx4_dev *dev, u32 index) |
|
{ |
|
struct mlx4_priv *priv = mlx4_priv(dev); |
|
|
|
mlx4_bitmap_free(&priv->mr_table.mpt_bitmap, index, MLX4_NO_RR); |
|
} |
|
|
|
static void mlx4_mpt_release(struct mlx4_dev *dev, u32 index) |
|
{ |
|
u64 in_param = 0; |
|
|
|
if (mlx4_is_mfunc(dev)) { |
|
set_param_l(&in_param, index); |
|
if (mlx4_cmd(dev, in_param, RES_MPT, RES_OP_RESERVE, |
|
MLX4_CMD_FREE_RES, |
|
MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED)) |
|
mlx4_warn(dev, "Failed to release mr index:%d\n", |
|
index); |
|
return; |
|
} |
|
__mlx4_mpt_release(dev, index); |
|
} |
|
|
|
int __mlx4_mpt_alloc_icm(struct mlx4_dev *dev, u32 index) |
|
{ |
|
struct mlx4_mr_table *mr_table = &mlx4_priv(dev)->mr_table; |
|
|
|
return mlx4_table_get(dev, &mr_table->dmpt_table, index); |
|
} |
|
|
|
static int mlx4_mpt_alloc_icm(struct mlx4_dev *dev, u32 index) |
|
{ |
|
u64 param = 0; |
|
|
|
if (mlx4_is_mfunc(dev)) { |
|
set_param_l(¶m, index); |
|
return mlx4_cmd_imm(dev, param, ¶m, RES_MPT, RES_OP_MAP_ICM, |
|
MLX4_CMD_ALLOC_RES, |
|
MLX4_CMD_TIME_CLASS_A, |
|
MLX4_CMD_WRAPPED); |
|
} |
|
return __mlx4_mpt_alloc_icm(dev, index); |
|
} |
|
|
|
void __mlx4_mpt_free_icm(struct mlx4_dev *dev, u32 index) |
|
{ |
|
struct mlx4_mr_table *mr_table = &mlx4_priv(dev)->mr_table; |
|
|
|
mlx4_table_put(dev, &mr_table->dmpt_table, index); |
|
} |
|
|
|
static void mlx4_mpt_free_icm(struct mlx4_dev *dev, u32 index) |
|
{ |
|
u64 in_param = 0; |
|
|
|
if (mlx4_is_mfunc(dev)) { |
|
set_param_l(&in_param, index); |
|
if (mlx4_cmd(dev, in_param, RES_MPT, RES_OP_MAP_ICM, |
|
MLX4_CMD_FREE_RES, MLX4_CMD_TIME_CLASS_A, |
|
MLX4_CMD_WRAPPED)) |
|
mlx4_warn(dev, "Failed to free icm of mr index:%d\n", |
|
index); |
|
return; |
|
} |
|
return __mlx4_mpt_free_icm(dev, index); |
|
} |
|
|
|
int mlx4_mr_alloc(struct mlx4_dev *dev, u32 pd, u64 iova, u64 size, u32 access, |
|
int npages, int page_shift, struct mlx4_mr *mr) |
|
{ |
|
u32 index; |
|
int err; |
|
|
|
index = mlx4_mpt_reserve(dev); |
|
if (index == -1) |
|
return -ENOMEM; |
|
|
|
err = mlx4_mr_alloc_reserved(dev, index, pd, iova, size, |
|
access, npages, page_shift, mr); |
|
if (err) |
|
mlx4_mpt_release(dev, index); |
|
|
|
return err; |
|
} |
|
EXPORT_SYMBOL_GPL(mlx4_mr_alloc); |
|
|
|
static int mlx4_mr_free_reserved(struct mlx4_dev *dev, struct mlx4_mr *mr) |
|
{ |
|
int err; |
|
|
|
if (mr->enabled == MLX4_MPT_EN_HW) { |
|
err = mlx4_HW2SW_MPT(dev, NULL, |
|
key_to_hw_index(mr->key) & |
|
(dev->caps.num_mpts - 1)); |
|
if (err) { |
|
mlx4_warn(dev, "HW2SW_MPT failed (%d), MR has MWs bound to it\n", |
|
err); |
|
return err; |
|
} |
|
|
|
mr->enabled = MLX4_MPT_EN_SW; |
|
} |
|
mlx4_mtt_cleanup(dev, &mr->mtt); |
|
|
|
return 0; |
|
} |
|
|
|
int mlx4_mr_free(struct mlx4_dev *dev, struct mlx4_mr *mr) |
|
{ |
|
int ret; |
|
|
|
ret = mlx4_mr_free_reserved(dev, mr); |
|
if (ret) |
|
return ret; |
|
if (mr->enabled) |
|
mlx4_mpt_free_icm(dev, key_to_hw_index(mr->key)); |
|
mlx4_mpt_release(dev, key_to_hw_index(mr->key)); |
|
|
|
return 0; |
|
} |
|
EXPORT_SYMBOL_GPL(mlx4_mr_free); |
|
|
|
void mlx4_mr_rereg_mem_cleanup(struct mlx4_dev *dev, struct mlx4_mr *mr) |
|
{ |
|
mlx4_mtt_cleanup(dev, &mr->mtt); |
|
mr->mtt.order = -1; |
|
} |
|
EXPORT_SYMBOL_GPL(mlx4_mr_rereg_mem_cleanup); |
|
|
|
int mlx4_mr_rereg_mem_write(struct mlx4_dev *dev, struct mlx4_mr *mr, |
|
u64 iova, u64 size, int npages, |
|
int page_shift, struct mlx4_mpt_entry *mpt_entry) |
|
{ |
|
int err; |
|
|
|
err = mlx4_mtt_init(dev, npages, page_shift, &mr->mtt); |
|
if (err) |
|
return err; |
|
|
|
mpt_entry->start = cpu_to_be64(iova); |
|
mpt_entry->length = cpu_to_be64(size); |
|
mpt_entry->entity_size = cpu_to_be32(page_shift); |
|
mpt_entry->flags &= ~(cpu_to_be32(MLX4_MPT_FLAG_FREE | |
|
MLX4_MPT_FLAG_SW_OWNS)); |
|
if (mr->mtt.order < 0) { |
|
mpt_entry->flags |= cpu_to_be32(MLX4_MPT_FLAG_PHYSICAL); |
|
mpt_entry->mtt_addr = 0; |
|
} else { |
|
mpt_entry->mtt_addr = cpu_to_be64(mlx4_mtt_addr(dev, |
|
&mr->mtt)); |
|
if (mr->mtt.page_shift == 0) |
|
mpt_entry->mtt_sz = cpu_to_be32(1 << mr->mtt.order); |
|
} |
|
if (mr->mtt.order >= 0 && mr->mtt.page_shift == 0) { |
|
/* fast register MR in free state */ |
|
mpt_entry->flags |= cpu_to_be32(MLX4_MPT_FLAG_FREE); |
|
mpt_entry->pd_flags |= cpu_to_be32(MLX4_MPT_PD_FLAG_FAST_REG | |
|
MLX4_MPT_PD_FLAG_RAE); |
|
} else { |
|
mpt_entry->flags |= cpu_to_be32(MLX4_MPT_FLAG_SW_OWNS); |
|
} |
|
mr->enabled = MLX4_MPT_EN_SW; |
|
|
|
return 0; |
|
} |
|
EXPORT_SYMBOL_GPL(mlx4_mr_rereg_mem_write); |
|
|
|
int mlx4_mr_enable(struct mlx4_dev *dev, struct mlx4_mr *mr) |
|
{ |
|
struct mlx4_cmd_mailbox *mailbox; |
|
struct mlx4_mpt_entry *mpt_entry; |
|
int err; |
|
|
|
err = mlx4_mpt_alloc_icm(dev, key_to_hw_index(mr->key)); |
|
if (err) |
|
return err; |
|
|
|
mailbox = mlx4_alloc_cmd_mailbox(dev); |
|
if (IS_ERR(mailbox)) { |
|
err = PTR_ERR(mailbox); |
|
goto err_table; |
|
} |
|
mpt_entry = mailbox->buf; |
|
mpt_entry->flags = cpu_to_be32(MLX4_MPT_FLAG_MIO | |
|
MLX4_MPT_FLAG_REGION | |
|
mr->access); |
|
|
|
mpt_entry->key = cpu_to_be32(key_to_hw_index(mr->key)); |
|
mpt_entry->pd_flags = cpu_to_be32(mr->pd | MLX4_MPT_PD_FLAG_EN_INV); |
|
mpt_entry->start = cpu_to_be64(mr->iova); |
|
mpt_entry->length = cpu_to_be64(mr->size); |
|
mpt_entry->entity_size = cpu_to_be32(mr->mtt.page_shift); |
|
|
|
if (mr->mtt.order < 0) { |
|
mpt_entry->flags |= cpu_to_be32(MLX4_MPT_FLAG_PHYSICAL); |
|
mpt_entry->mtt_addr = 0; |
|
} else { |
|
mpt_entry->mtt_addr = cpu_to_be64(mlx4_mtt_addr(dev, |
|
&mr->mtt)); |
|
} |
|
|
|
if (mr->mtt.order >= 0 && mr->mtt.page_shift == 0) { |
|
/* fast register MR in free state */ |
|
mpt_entry->flags |= cpu_to_be32(MLX4_MPT_FLAG_FREE); |
|
mpt_entry->pd_flags |= cpu_to_be32(MLX4_MPT_PD_FLAG_FAST_REG | |
|
MLX4_MPT_PD_FLAG_RAE); |
|
mpt_entry->mtt_sz = cpu_to_be32(1 << mr->mtt.order); |
|
} else { |
|
mpt_entry->flags |= cpu_to_be32(MLX4_MPT_FLAG_SW_OWNS); |
|
} |
|
|
|
err = mlx4_SW2HW_MPT(dev, mailbox, |
|
key_to_hw_index(mr->key) & (dev->caps.num_mpts - 1)); |
|
if (err) { |
|
mlx4_warn(dev, "SW2HW_MPT failed (%d)\n", err); |
|
goto err_cmd; |
|
} |
|
mr->enabled = MLX4_MPT_EN_HW; |
|
|
|
mlx4_free_cmd_mailbox(dev, mailbox); |
|
|
|
return 0; |
|
|
|
err_cmd: |
|
mlx4_free_cmd_mailbox(dev, mailbox); |
|
|
|
err_table: |
|
mlx4_mpt_free_icm(dev, key_to_hw_index(mr->key)); |
|
return err; |
|
} |
|
EXPORT_SYMBOL_GPL(mlx4_mr_enable); |
|
|
|
static int mlx4_write_mtt_chunk(struct mlx4_dev *dev, struct mlx4_mtt *mtt, |
|
int start_index, int npages, u64 *page_list) |
|
{ |
|
struct mlx4_priv *priv = mlx4_priv(dev); |
|
__be64 *mtts; |
|
dma_addr_t dma_handle; |
|
int i; |
|
|
|
mtts = mlx4_table_find(&priv->mr_table.mtt_table, mtt->offset + |
|
start_index, &dma_handle); |
|
|
|
if (!mtts) |
|
return -ENOMEM; |
|
|
|
dma_sync_single_for_cpu(&dev->persist->pdev->dev, dma_handle, |
|
npages * sizeof(u64), DMA_TO_DEVICE); |
|
|
|
for (i = 0; i < npages; ++i) |
|
mtts[i] = cpu_to_be64(page_list[i] | MLX4_MTT_FLAG_PRESENT); |
|
|
|
dma_sync_single_for_device(&dev->persist->pdev->dev, dma_handle, |
|
npages * sizeof(u64), DMA_TO_DEVICE); |
|
|
|
return 0; |
|
} |
|
|
|
int __mlx4_write_mtt(struct mlx4_dev *dev, struct mlx4_mtt *mtt, |
|
int start_index, int npages, u64 *page_list) |
|
{ |
|
int err = 0; |
|
int chunk; |
|
int mtts_per_page; |
|
int max_mtts_first_page; |
|
|
|
/* compute how may mtts fit in the first page */ |
|
mtts_per_page = PAGE_SIZE / sizeof(u64); |
|
max_mtts_first_page = mtts_per_page - (mtt->offset + start_index) |
|
% mtts_per_page; |
|
|
|
chunk = min_t(int, max_mtts_first_page, npages); |
|
|
|
while (npages > 0) { |
|
err = mlx4_write_mtt_chunk(dev, mtt, start_index, chunk, page_list); |
|
if (err) |
|
return err; |
|
npages -= chunk; |
|
start_index += chunk; |
|
page_list += chunk; |
|
|
|
chunk = min_t(int, mtts_per_page, npages); |
|
} |
|
return err; |
|
} |
|
|
|
int mlx4_write_mtt(struct mlx4_dev *dev, struct mlx4_mtt *mtt, |
|
int start_index, int npages, u64 *page_list) |
|
{ |
|
struct mlx4_cmd_mailbox *mailbox = NULL; |
|
__be64 *inbox = NULL; |
|
int chunk; |
|
int err = 0; |
|
int i; |
|
|
|
if (mtt->order < 0) |
|
return -EINVAL; |
|
|
|
if (mlx4_is_mfunc(dev)) { |
|
mailbox = mlx4_alloc_cmd_mailbox(dev); |
|
if (IS_ERR(mailbox)) |
|
return PTR_ERR(mailbox); |
|
inbox = mailbox->buf; |
|
|
|
while (npages > 0) { |
|
chunk = min_t(int, MLX4_MAILBOX_SIZE / sizeof(u64) - 2, |
|
npages); |
|
inbox[0] = cpu_to_be64(mtt->offset + start_index); |
|
inbox[1] = 0; |
|
for (i = 0; i < chunk; ++i) |
|
inbox[i + 2] = cpu_to_be64(page_list[i] | |
|
MLX4_MTT_FLAG_PRESENT); |
|
err = mlx4_WRITE_MTT(dev, mailbox, chunk); |
|
if (err) { |
|
mlx4_free_cmd_mailbox(dev, mailbox); |
|
return err; |
|
} |
|
|
|
npages -= chunk; |
|
start_index += chunk; |
|
page_list += chunk; |
|
} |
|
mlx4_free_cmd_mailbox(dev, mailbox); |
|
return err; |
|
} |
|
|
|
return __mlx4_write_mtt(dev, mtt, start_index, npages, page_list); |
|
} |
|
EXPORT_SYMBOL_GPL(mlx4_write_mtt); |
|
|
|
int mlx4_buf_write_mtt(struct mlx4_dev *dev, struct mlx4_mtt *mtt, |
|
struct mlx4_buf *buf) |
|
{ |
|
u64 *page_list; |
|
int err; |
|
int i; |
|
|
|
page_list = kcalloc(buf->npages, sizeof(*page_list), GFP_KERNEL); |
|
if (!page_list) |
|
return -ENOMEM; |
|
|
|
for (i = 0; i < buf->npages; ++i) |
|
if (buf->nbufs == 1) |
|
page_list[i] = buf->direct.map + (i << buf->page_shift); |
|
else |
|
page_list[i] = buf->page_list[i].map; |
|
|
|
err = mlx4_write_mtt(dev, mtt, 0, buf->npages, page_list); |
|
|
|
kfree(page_list); |
|
return err; |
|
} |
|
EXPORT_SYMBOL_GPL(mlx4_buf_write_mtt); |
|
|
|
int mlx4_mw_alloc(struct mlx4_dev *dev, u32 pd, enum mlx4_mw_type type, |
|
struct mlx4_mw *mw) |
|
{ |
|
u32 index; |
|
|
|
if ((type == MLX4_MW_TYPE_1 && |
|
!(dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW)) || |
|
(type == MLX4_MW_TYPE_2 && |
|
!(dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN))) |
|
return -EOPNOTSUPP; |
|
|
|
index = mlx4_mpt_reserve(dev); |
|
if (index == -1) |
|
return -ENOMEM; |
|
|
|
mw->key = hw_index_to_key(index); |
|
mw->pd = pd; |
|
mw->type = type; |
|
mw->enabled = MLX4_MPT_DISABLED; |
|
|
|
return 0; |
|
} |
|
EXPORT_SYMBOL_GPL(mlx4_mw_alloc); |
|
|
|
int mlx4_mw_enable(struct mlx4_dev *dev, struct mlx4_mw *mw) |
|
{ |
|
struct mlx4_cmd_mailbox *mailbox; |
|
struct mlx4_mpt_entry *mpt_entry; |
|
int err; |
|
|
|
err = mlx4_mpt_alloc_icm(dev, key_to_hw_index(mw->key)); |
|
if (err) |
|
return err; |
|
|
|
mailbox = mlx4_alloc_cmd_mailbox(dev); |
|
if (IS_ERR(mailbox)) { |
|
err = PTR_ERR(mailbox); |
|
goto err_table; |
|
} |
|
mpt_entry = mailbox->buf; |
|
|
|
/* Note that the MLX4_MPT_FLAG_REGION bit in mpt_entry->flags is turned |
|
* off, thus creating a memory window and not a memory region. |
|
*/ |
|
mpt_entry->key = cpu_to_be32(key_to_hw_index(mw->key)); |
|
mpt_entry->pd_flags = cpu_to_be32(mw->pd); |
|
if (mw->type == MLX4_MW_TYPE_2) { |
|
mpt_entry->flags |= cpu_to_be32(MLX4_MPT_FLAG_FREE); |
|
mpt_entry->qpn = cpu_to_be32(MLX4_MPT_QP_FLAG_BOUND_QP); |
|
mpt_entry->pd_flags |= cpu_to_be32(MLX4_MPT_PD_FLAG_EN_INV); |
|
} |
|
|
|
err = mlx4_SW2HW_MPT(dev, mailbox, |
|
key_to_hw_index(mw->key) & |
|
(dev->caps.num_mpts - 1)); |
|
if (err) { |
|
mlx4_warn(dev, "SW2HW_MPT failed (%d)\n", err); |
|
goto err_cmd; |
|
} |
|
mw->enabled = MLX4_MPT_EN_HW; |
|
|
|
mlx4_free_cmd_mailbox(dev, mailbox); |
|
|
|
return 0; |
|
|
|
err_cmd: |
|
mlx4_free_cmd_mailbox(dev, mailbox); |
|
|
|
err_table: |
|
mlx4_mpt_free_icm(dev, key_to_hw_index(mw->key)); |
|
return err; |
|
} |
|
EXPORT_SYMBOL_GPL(mlx4_mw_enable); |
|
|
|
void mlx4_mw_free(struct mlx4_dev *dev, struct mlx4_mw *mw) |
|
{ |
|
int err; |
|
|
|
if (mw->enabled == MLX4_MPT_EN_HW) { |
|
err = mlx4_HW2SW_MPT(dev, NULL, |
|
key_to_hw_index(mw->key) & |
|
(dev->caps.num_mpts - 1)); |
|
if (err) |
|
mlx4_warn(dev, "xxx HW2SW_MPT failed (%d)\n", err); |
|
|
|
mw->enabled = MLX4_MPT_EN_SW; |
|
} |
|
if (mw->enabled) |
|
mlx4_mpt_free_icm(dev, key_to_hw_index(mw->key)); |
|
mlx4_mpt_release(dev, key_to_hw_index(mw->key)); |
|
} |
|
EXPORT_SYMBOL_GPL(mlx4_mw_free); |
|
|
|
int mlx4_init_mr_table(struct mlx4_dev *dev) |
|
{ |
|
struct mlx4_priv *priv = mlx4_priv(dev); |
|
struct mlx4_mr_table *mr_table = &priv->mr_table; |
|
int err; |
|
|
|
/* Nothing to do for slaves - all MR handling is forwarded |
|
* to the master */ |
|
if (mlx4_is_slave(dev)) |
|
return 0; |
|
|
|
if (!is_power_of_2(dev->caps.num_mpts)) |
|
return -EINVAL; |
|
|
|
err = mlx4_bitmap_init(&mr_table->mpt_bitmap, dev->caps.num_mpts, |
|
~0, dev->caps.reserved_mrws, 0); |
|
if (err) |
|
return err; |
|
|
|
err = mlx4_buddy_init(&mr_table->mtt_buddy, |
|
ilog2((u32)dev->caps.num_mtts / |
|
(1 << log_mtts_per_seg))); |
|
if (err) |
|
goto err_buddy; |
|
|
|
if (dev->caps.reserved_mtts) { |
|
priv->reserved_mtts = |
|
mlx4_alloc_mtt_range(dev, |
|
fls(dev->caps.reserved_mtts - 1)); |
|
if (priv->reserved_mtts < 0) { |
|
mlx4_warn(dev, "MTT table of order %u is too small\n", |
|
mr_table->mtt_buddy.max_order); |
|
err = -ENOMEM; |
|
goto err_reserve_mtts; |
|
} |
|
} |
|
|
|
return 0; |
|
|
|
err_reserve_mtts: |
|
mlx4_buddy_cleanup(&mr_table->mtt_buddy); |
|
|
|
err_buddy: |
|
mlx4_bitmap_cleanup(&mr_table->mpt_bitmap); |
|
|
|
return err; |
|
} |
|
|
|
void mlx4_cleanup_mr_table(struct mlx4_dev *dev) |
|
{ |
|
struct mlx4_priv *priv = mlx4_priv(dev); |
|
struct mlx4_mr_table *mr_table = &priv->mr_table; |
|
|
|
if (mlx4_is_slave(dev)) |
|
return; |
|
if (priv->reserved_mtts >= 0) |
|
mlx4_free_mtt_range(dev, priv->reserved_mtts, |
|
fls(dev->caps.reserved_mtts - 1)); |
|
mlx4_buddy_cleanup(&mr_table->mtt_buddy); |
|
mlx4_bitmap_cleanup(&mr_table->mpt_bitmap); |
|
} |
|
|
|
int mlx4_SYNC_TPT(struct mlx4_dev *dev) |
|
{ |
|
return mlx4_cmd(dev, 0, 0, 0, MLX4_CMD_SYNC_TPT, |
|
MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE); |
|
} |
|
EXPORT_SYMBOL_GPL(mlx4_SYNC_TPT);
|
|
|