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drm/nouveau/ltc: add hooks for invalidate and flush 

These are useful for systems without a coherent CPU/GPU bus. For such
systems we may need to maintain the L2 ourselves.

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
hifive-unleashed-5.1
Alexandre Courbot 2015-09-03 17:48:14 +09:00 committed by Ben Skeggs
parent 542f60dc84
commit 38a8fc78d0
3 changed files with 20 additions and 0 deletions
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3
drivers/gpu/drm/nouveau/include/nvkm/subdev/ltc.h
View File

@ -30,6 +30,9 @@ void nvkm_ltc_tags_clear(struct nvkm_ltc *, u32 first, u32 count);
int nvkm_ltc_zbc_color_get(struct nvkm_ltc *, int index, const u32[4]);
int nvkm_ltc_zbc_depth_get(struct nvkm_ltc *, int index, const u32);
void nvkm_ltc_invalidate(struct nvkm_ltc *);
void nvkm_ltc_flush(struct nvkm_ltc *);
int gf100_ltc_new(struct nvkm_device *, int, struct nvkm_ltc **);
int gk104_ltc_new(struct nvkm_device *, int, struct nvkm_ltc **);
int gm107_ltc_new(struct nvkm_device *, int, struct nvkm_ltc **);

14
drivers/gpu/drm/nouveau/nvkm/subdev/ltc/base.c
View File

@ -67,6 +67,20 @@ nvkm_ltc_zbc_depth_get(struct nvkm_ltc *ltc, int index, const u32 depth)
return index;
}
void
nvkm_ltc_invalidate(struct nvkm_ltc *ltc)
{
if (ltc->func->invalidate)
ltc->func->invalidate(ltc);
}
void
nvkm_ltc_flush(struct nvkm_ltc *ltc)
{
if (ltc->func->flush)
ltc->func->flush(ltc);
}
static void
nvkm_ltc_intr(struct nvkm_subdev *subdev)
{

3
drivers/gpu/drm/nouveau/nvkm/subdev/ltc/priv.h
View File

@ -17,6 +17,9 @@ struct nvkm_ltc_func {
int zbc;
void (*zbc_clear_color)(struct nvkm_ltc *, int, const u32[4]);
void (*zbc_clear_depth)(struct nvkm_ltc *, int, const u32);
void (*invalidate)(struct nvkm_ltc *);
void (*flush)(struct nvkm_ltc *);
};
int gf100_ltc_oneinit(struct nvkm_ltc *);