mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-03 05:06:38 +07:00
225c7b1fee
Add an InfiniBand driver for Mellanox ConnectX adapters. Because
these adapters can also be used as ethernet NICs and Fibre Channel
HBAs, the driver is split into two modules:
mlx4_core: Handles low-level things like device initialization and
processing firmware commands. Also controls resource allocation
so that the InfiniBand, ethernet and FC functions can share a
device without stepping on each other.
mlx4_ib: Handles InfiniBand-specific things; plugs into the
InfiniBand midlayer.
Signed-off-by: Roland Dreier <rolandd@cisco.com>
136 lines
4.4 KiB
C
136 lines
4.4 KiB
C
/*
|
|
* Copyright (c) 2005 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.
|
|
*/
|
|
|
|
#ifndef MLX4_ICM_H
|
|
#define MLX4_ICM_H
|
|
|
|
#include <linux/list.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/mutex.h>
|
|
|
|
#define MLX4_ICM_CHUNK_LEN \
|
|
((256 - sizeof (struct list_head) - 2 * sizeof (int)) / \
|
|
(sizeof (struct scatterlist)))
|
|
|
|
enum {
|
|
MLX4_ICM_PAGE_SHIFT = 12,
|
|
MLX4_ICM_PAGE_SIZE = 1 << MLX4_ICM_PAGE_SHIFT,
|
|
};
|
|
|
|
struct mlx4_icm_chunk {
|
|
struct list_head list;
|
|
int npages;
|
|
int nsg;
|
|
struct scatterlist mem[MLX4_ICM_CHUNK_LEN];
|
|
};
|
|
|
|
struct mlx4_icm {
|
|
struct list_head chunk_list;
|
|
int refcount;
|
|
};
|
|
|
|
struct mlx4_icm_iter {
|
|
struct mlx4_icm *icm;
|
|
struct mlx4_icm_chunk *chunk;
|
|
int page_idx;
|
|
};
|
|
|
|
struct mlx4_dev;
|
|
|
|
struct mlx4_icm *mlx4_alloc_icm(struct mlx4_dev *dev, int npages, gfp_t gfp_mask);
|
|
void mlx4_free_icm(struct mlx4_dev *dev, struct mlx4_icm *icm);
|
|
|
|
int mlx4_table_get(struct mlx4_dev *dev, struct mlx4_icm_table *table, int obj);
|
|
void mlx4_table_put(struct mlx4_dev *dev, struct mlx4_icm_table *table, int obj);
|
|
int mlx4_table_get_range(struct mlx4_dev *dev, struct mlx4_icm_table *table,
|
|
int start, int end);
|
|
void mlx4_table_put_range(struct mlx4_dev *dev, struct mlx4_icm_table *table,
|
|
int start, int end);
|
|
int mlx4_init_icm_table(struct mlx4_dev *dev, struct mlx4_icm_table *table,
|
|
u64 virt, int obj_size, int nobj, int reserved,
|
|
int use_lowmem);
|
|
void mlx4_cleanup_icm_table(struct mlx4_dev *dev, struct mlx4_icm_table *table);
|
|
int mlx4_table_get(struct mlx4_dev *dev, struct mlx4_icm_table *table, int obj);
|
|
void mlx4_table_put(struct mlx4_dev *dev, struct mlx4_icm_table *table, int obj);
|
|
void *mlx4_table_find(struct mlx4_icm_table *table, int obj);
|
|
int mlx4_table_get_range(struct mlx4_dev *dev, struct mlx4_icm_table *table,
|
|
int start, int end);
|
|
void mlx4_table_put_range(struct mlx4_dev *dev, struct mlx4_icm_table *table,
|
|
int start, int end);
|
|
|
|
static inline void mlx4_icm_first(struct mlx4_icm *icm,
|
|
struct mlx4_icm_iter *iter)
|
|
{
|
|
iter->icm = icm;
|
|
iter->chunk = list_empty(&icm->chunk_list) ?
|
|
NULL : list_entry(icm->chunk_list.next,
|
|
struct mlx4_icm_chunk, list);
|
|
iter->page_idx = 0;
|
|
}
|
|
|
|
static inline int mlx4_icm_last(struct mlx4_icm_iter *iter)
|
|
{
|
|
return !iter->chunk;
|
|
}
|
|
|
|
static inline void mlx4_icm_next(struct mlx4_icm_iter *iter)
|
|
{
|
|
if (++iter->page_idx >= iter->chunk->nsg) {
|
|
if (iter->chunk->list.next == &iter->icm->chunk_list) {
|
|
iter->chunk = NULL;
|
|
return;
|
|
}
|
|
|
|
iter->chunk = list_entry(iter->chunk->list.next,
|
|
struct mlx4_icm_chunk, list);
|
|
iter->page_idx = 0;
|
|
}
|
|
}
|
|
|
|
static inline dma_addr_t mlx4_icm_addr(struct mlx4_icm_iter *iter)
|
|
{
|
|
return sg_dma_address(&iter->chunk->mem[iter->page_idx]);
|
|
}
|
|
|
|
static inline unsigned long mlx4_icm_size(struct mlx4_icm_iter *iter)
|
|
{
|
|
return sg_dma_len(&iter->chunk->mem[iter->page_idx]);
|
|
}
|
|
|
|
int mlx4_UNMAP_ICM(struct mlx4_dev *dev, u64 virt, u32 page_count);
|
|
int mlx4_MAP_ICM_page(struct mlx4_dev *dev, u64 dma_addr, u64 virt);
|
|
int mlx4_MAP_ICM_AUX(struct mlx4_dev *dev, struct mlx4_icm *icm);
|
|
int mlx4_UNMAP_ICM_AUX(struct mlx4_dev *dev);
|
|
|
|
#endif /* MLX4_ICM_H */
|