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Commit 38a8fc78 authored by Alexandre Courbot's avatar Alexandre Courbot Committed by Ben Skeggs
Browse files

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: default avatarAlexandre Courbot <acourbot@nvidia.com>
Signed-off-by: default avatarBen Skeggs <bskeggs@redhat.com>
parent 542f60dc

drivers/gpu/drm/nouveau/include/nvkm/subdev/ltc.h

+3 −0
Original line number Diff line number Diff line
@@ -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 **);

drivers/gpu/drm/nouveau/nvkm/subdev/ltc/base.c

+14 −0
Original line number Diff line number Diff line
@@ -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)

{

drivers/gpu/drm/nouveau/nvkm/subdev/ltc/priv.h

+3 −0
Original line number Diff line number Diff line
@@ -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 *);