openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

drm/nouveau/falcon: fix port offset for DMEM register 

DMEM registers are replicated with a stride of 8 bytes.

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Alexandre Courbot 2017-02-14 15:52:54 +09:00 committed by Ben Skeggs
parent e444de56bc
commit ca179c852a
1 changed files with 10 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
drivers/gpu/drm/nouveau/nvkm/falcon/v1.c
View File

@ -72,18 +72,19 @@ nvkm_falcon_v1_load_dmem(struct nvkm_falcon *falcon, void *data, u32 start,
size -= rem;
nvkm_falcon_wr32(falcon, 0x1c0 + (port * 16), start | (0x1 << 24));
nvkm_falcon_wr32(falcon, 0x1c0 + (port * 8), start | (0x1 << 24));
for (i = 0; i < size / 4; i++)
nvkm_falcon_wr32(falcon, 0x1c4, ((u32 *)data)[i]);
nvkm_falcon_wr32(falcon, 0x1c4 + (port * 8), ((u32 *)data)[i]);
/*
* If size is not a multiple of 4, mask the last work to ensure garbage
* does not get read
* If size is not a multiple of 4, mask the last word to ensure garbage
* does not get written
*/
if (rem) {
u32 extra = ((u32 *)data)[i];
nvkm_falcon_wr32(falcon, 0x1c4, extra & (BIT(rem * 8) - 1));
nvkm_falcon_wr32(falcon, 0x1c4 + (port * 8),
extra & (BIT(rem * 8) - 1));
}
}
@ -96,16 +97,16 @@ nvkm_falcon_v1_read_dmem(struct nvkm_falcon *falcon, u32 start, u32 size,
size -= rem;
nvkm_falcon_wr32(falcon, 0x1c0 + (port * 16), start | (0x1 << 25));
nvkm_falcon_wr32(falcon, 0x1c0 + (port * 8), start | (0x1 << 25));
for (i = 0; i < size / 4; i++)
((u32 *)data)[i] = nvkm_falcon_rd32(falcon, 0x1c4);
((u32 *)data)[i] = nvkm_falcon_rd32(falcon, 0x1c4 + (port * 8));
/*
* If size is not a multiple of 4, mask the last work to ensure garbage
* If size is not a multiple of 4, mask the last word to ensure garbage
* does not get read
*/
if (rem) {
u32 extra = nvkm_falcon_rd32(falcon, 0x1c4);
u32 extra = nvkm_falcon_rd32(falcon, 0x1c4 + (port * 8));
for (i = size; i < size + rem; i++) {
((u8 *)data)[i] = (u8)(extra & 0xff);