drm/nouveau/gr/gf100-: move fecs discover_zcull_image_size into a function
Makes the code somewhat less magic.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.c b/drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.c
index 6c045f2..b5eecc6 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.c
@@ -716,6 +716,22 @@ gf100_gr_pack_mmio[] = {
******************************************************************************/
static int
+gf100_gr_fecs_discover_zcull_image_size(struct gf100_gr *gr, u32 *psize)
+{
+ struct nvkm_device *device = gr->base.engine.subdev.device;
+
+ nvkm_wr32(device, 0x409840, 0xffffffff);
+ nvkm_wr32(device, 0x409500, 0x00000000);
+ nvkm_wr32(device, 0x409504, 0x00000016);
+ nvkm_msec(device, 2000,
+ if ((*psize = nvkm_rd32(device, 0x409800)))
+ return 0;
+ );
+
+ return -ETIMEDOUT;
+}
+
+static int
gf100_gr_fecs_discover_image_size(struct gf100_gr *gr, u32 *psize)
{
struct nvkm_device *device = gr->base.engine.subdev.device;
@@ -1558,14 +1574,10 @@ gf100_gr_init_ctxctl_ext(struct gf100_gr *gr)
if (ret)
return ret;
- nvkm_wr32(device, 0x409840, 0xffffffff);
- nvkm_wr32(device, 0x409500, 0x00000000);
- nvkm_wr32(device, 0x409504, 0x00000016);
- if (nvkm_msec(device, 2000,
- if (nvkm_rd32(device, 0x409800))
- break;
- ) < 0)
- return -EBUSY;
+ /* Determine how much memory is required to store ZCULL image. */
+ ret = gf100_gr_fecs_discover_zcull_image_size(gr, &gr->size_zcull);
+ if (ret)
+ return ret;
nvkm_wr32(device, 0x409840, 0xffffffff);
nvkm_wr32(device, 0x409500, 0x00000000);
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.h b/drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.h
index dc46cf01..81bdf65 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.h
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/gr/gf100.h
@@ -128,6 +128,7 @@ struct gf100_gr {
struct gf100_gr_mmio mmio_list[4096/8];
u32 size;
u32 *data;
+ u32 size_zcull;
};
int gf100_gr_ctor(const struct gf100_gr_func *, struct nvkm_device *,