mirror of
git://nv-tegra.nvidia.com/linux-nvgpu.git
synced 2025-12-22 17:36:20 +03:00
719923ad9f
To help remove the nvhost dependency from nvgpu, rename ioctl defines and structures used by nvgpu such that nvhost is replaced by nvgpu. Duplicate some structures as needed. Update header guards and such accordingly. Change-Id: Ifc3a867713072bae70256502735583ab38381877 Signed-off-by: Konsta Holtta <kholtta@nvidia.com> Reviewed-on: http://git-master/r/542620 Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com> Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>
114 lines
3.3 KiB
C
114 lines
3.3 KiB
C
/*
|
|
* Copyright (c) 2011-2014, NVIDIA CORPORATION. All rights reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifndef GK20A_ALLOCATOR_H
|
|
#define GK20A_ALLOCATOR_H
|
|
|
|
#include <linux/rbtree.h>
|
|
#include <linux/rwsem.h>
|
|
#include <linux/slab.h>
|
|
|
|
/* #define ALLOCATOR_DEBUG */
|
|
|
|
/* main struct */
|
|
struct gk20a_allocator {
|
|
|
|
char name[32]; /* name for allocator */
|
|
struct rb_root rb_root; /* rb tree root for blocks */
|
|
|
|
u32 base; /* min value of this linear space */
|
|
u32 limit; /* max value = limit - 1 */
|
|
u32 align; /* alignment size, power of 2 */
|
|
|
|
struct gk20a_alloc_block *block_first; /* first block in list */
|
|
struct gk20a_alloc_block *block_recent; /* last visited block */
|
|
|
|
u32 first_free_addr; /* first free addr, non-contigous
|
|
allocation preferred start,
|
|
in order to pick up small holes */
|
|
u32 last_free_addr; /* last free addr, contiguous
|
|
allocation preferred start */
|
|
u32 cached_hole_size; /* max free hole size up to
|
|
last_free_addr */
|
|
u32 block_count; /* number of blocks */
|
|
|
|
struct rw_semaphore rw_sema; /* lock */
|
|
struct kmem_cache *block_cache; /* slab cache */
|
|
|
|
/* if enabled, constrain to [base, limit) */
|
|
struct {
|
|
bool enable;
|
|
u32 base;
|
|
u32 limit;
|
|
} constraint;
|
|
|
|
int (*alloc)(struct gk20a_allocator *allocator,
|
|
u32 *addr, u32 len);
|
|
int (*free)(struct gk20a_allocator *allocator,
|
|
u32 addr, u32 len);
|
|
|
|
};
|
|
|
|
/* a block of linear space range [start, end) */
|
|
struct gk20a_alloc_block {
|
|
struct gk20a_allocator *allocator; /* parent allocator */
|
|
struct rb_node rb; /* rb tree node */
|
|
|
|
u32 start; /* linear space range
|
|
[start, end) */
|
|
u32 end;
|
|
|
|
void *priv; /* backing structure for this
|
|
linear space block
|
|
page table, comp tag, etc */
|
|
|
|
struct gk20a_alloc_block *prev; /* prev block with lower address */
|
|
struct gk20a_alloc_block *next; /* next block with higher address */
|
|
|
|
bool nc_block;
|
|
struct gk20a_alloc_block *nc_prev; /* prev block for
|
|
non-contiguous allocation */
|
|
struct gk20a_alloc_block *nc_next; /* next block for
|
|
non-contiguous allocation */
|
|
};
|
|
|
|
int gk20a_allocator_init(struct gk20a_allocator *allocator,
|
|
const char *name, u32 base, u32 size, u32 align);
|
|
void gk20a_allocator_destroy(struct gk20a_allocator *allocator);
|
|
|
|
int gk20a_allocator_block_alloc(struct gk20a_allocator *allocator,
|
|
u32 *addr, u32 len);
|
|
|
|
int gk20a_allocator_block_free(struct gk20a_allocator *allocator,
|
|
u32 addr, u32 len);
|
|
|
|
#if defined(ALLOCATOR_DEBUG)
|
|
|
|
#define allocator_dbg(alloctor, format, arg...) \
|
|
do { \
|
|
if (1) \
|
|
pr_debug("gk20a_allocator (%s) %s: " format "\n",\
|
|
alloctor->name, __func__, ##arg);\
|
|
} while (0)
|
|
|
|
#else /* ALLOCATOR_DEBUG */
|
|
|
|
#define allocator_dbg(format, arg...)
|
|
|
|
#endif /* ALLOCATOR_DEBUG */
|
|
|
|
#endif /* GK20A_ALLOCATOR_H */
|