/* SPDX-License-Identifier: MIT */
#ifndef __NVKM_MEMORY_H__
#define __NVKM_MEMORY_H__
#include <core/os.h>
struct nvkm_device;
struct nvkm_vma;
struct nvkm_vmm;
struct nvkm_tags {
struct nvkm_mm_node *mn;
refcount_t refcount;
};
enum nvkm_memory_target {
NVKM_MEM_TARGET_INST_SR_LOST, /* instance memory - not preserved across suspend */
NVKM_MEM_TARGET_INST, /* instance memory */
NVKM_MEM_TARGET_VRAM, /* video memory */
NVKM_MEM_TARGET_HOST, /* coherent system memory */
NVKM_MEM_TARGET_NCOH, /* non-coherent system memory */
};
struct nvkm_memory {
const struct nvkm_memory_func *func;
const struct nvkm_memory_ptrs *ptrs;
struct kref kref;
struct nvkm_tags *tags;
};
struct nvkm_memory_func {
void *(*dtor)(struct nvkm_memory *);
enum nvkm_memory_target (*target)(struct nvkm_memory *);
u8 (*page)(struct nvkm_memory *);
u64 (*bar2)(struct nvkm_memory *);
u64 (*addr)(struct nvkm_memory *);
u64 (*size)(struct nvkm_memory *);
void (*boot)(struct nvkm_memory *, struct nvkm_vmm *);
void __iomem *(*acquire)(struct nvkm_memory *);
void (*release)(struct nvkm_memory *);
int (*map)(struct nvkm_memory *, u64 offset, struct nvkm_vmm *,
struct nvkm_vma *, void *argv, u32 argc);
int (*kmap)(struct nvkm_memory *, struct nvkm_memory **);
};
struct nvkm_memory_ptrs {
u32 (*rd32)(struct nvkm_memory *, u64 offset);
void (*wr32)(struct nvkm_memory *, u64 offset, u32 data);
};
void nvkm_memory_ctor(const struct nvkm_memory_func *, struct nvkm_memory *);
int nvkm_memory_new(struct nvkm_device *, enum nvkm_memory_target,
u64 size, u32 align, bool zero, struct nvkm_memory **);
struct nvkm_memory *nvkm_memory_ref(struct nvkm_memory *);
void nvkm_memory_unref(struct nvkm_memory **);
int nvkm_memory_tags_get(struct nvkm_memory *, struct nvkm_device *, u32 tags,
void (*clear)(struct nvkm_device *, u32, u32),
struct nvkm_tags **);
void nvkm_memory_tags_put(struct nvkm_memory *, struct nvkm_device *,
struct nvkm_tags **);
#define nvkm_memory_target(p) (p)->func->target(p)
#define nvkm_memory_page(p) (p)->func->page(p)
#define nvkm_memory_bar2(p) (p)->func->bar2(p)
#define nvkm_memory_addr(p) (p)->func->addr(p)
#define nvkm_memory_size(p) (p)->func->size(p)
#define nvkm_memory_boot(p,v) (p)->func->boot((p),(v))
#define nvkm_memory_map(p,o,vm,va,av,ac) \
(p)->func->map((p),(o),(vm),(va),(av),(ac))
#define nvkm_memory_kmap(p,i) ((p)->func->kmap ? (p)->func->kmap((p), (i)) : -ENOSYS)
/* accessor macros - kmap()/done() must bracket use of the other accessor
* macros to guarantee correct behaviour across all chipsets
*/
#define nvkm_kmap(o) (o)->func->acquire(o)
#define nvkm_done(o) (o)->func->release(o)
#define nvkm_ro32(o,a) (o)->ptrs->rd32((o), (a))
#define nvkm_wo32(o,a,d) (o)->ptrs->wr32((o), (a), (d))
#define nvkm_mo32(o,a,m,d) ({ \
u32 _addr = (a), _data = nvkm_ro32((o), _addr); \
nvkm_wo32((o), _addr, (_data & ~(m)) | (d)); \
_data; \
})
#define nvkm_wo64(o,a,d) do { \
u64 __a = (a), __d = (d); \
nvkm_wo32((o), __a + 0, lower_32_bits(__d)); \
nvkm_wo32((o), __a + 4, upper_32_bits(__d)); \
} while(0)
#define nvkm_robj(o,a,p,s) do { \
u32 _addr = (a), _size = (s) >> 2, *_data = (void *)(p); \
while (_size--) { \
*(_data++) = nvkm_ro32((o), _addr); \
_addr += 4; \
} \
} while(0)
#define nvkm_wobj(o,a,p,s) do { \
u32 _addr = (a), _size = (s) >> 2, *_data = (void *)(p); \
while (_size--) { \
nvkm_wo32((o), _addr, *(_data++)); \
_addr += 4; \
} \
} while(0)
#define nvkm_fill(t,s,o,a,d,c) do { \
u64 _a = (a), _c = (c), _d = (d), _o = _a >> s, _s = _c << s; \
u##t __iomem *_m = nvkm_kmap(o); \
if (likely(_m)) { \
if (_d) { \
while (_c--) \
iowrite##t##_native(_d, &_m[_o++]); \
} else { \
memset_io(&_m[_o], _d, _s); \
} \
} else { \
for (; _c; _c--, _a += BIT(s)) \
nvkm_wo##t((o), _a, _d); \
} \
nvkm_done(o); \
} while(0)
#define nvkm_fo32(o,a,d,c) nvkm_fill(32, 2, (o), (a), (d), (c))
#define nvkm_fo64(o,a,d,c) nvkm_fill(64, 3, (o), (a), (d), (c))
#endif
Codebase Browser
linux