iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

drm/nouveau/devinit/tu102-: wait for GFW_BOOT_PROGRESS == COMPLETED

Browse Source 
[ Upstream commit d22915d22ded21fd5b24b60d174775789f173997 ]

Starting from Turing, the driver is no longer responsible for initiating
DEVINIT when required as the GPU started loading a FW image from ROM and
executing DEVINIT itself after power-on.

However - we apparently still need to wait for it to complete.

This should correct some issues with runpm on some systems, where we get
control of the HW before it's been fully reinitialised after resume from
suspend.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Lyude Paul <lyude@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230130223715.1831509-1-bskeggs@redhat.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Ben Skeggs 2023-01-31 08:37:13 +10:00 committed by Greg Kroah-Hartman
parent 4fdc19e4fa
commit 5027084bc0
1 changed files with 23 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
drivers/gpu/drm/nouveau/nvkm/subdev/devinit/tu102.c
View File

@ -65,10 +65,33 @@ tu102_devinit_pll_set(struct nvkm_devinit *init, u32 type, u32 freq)
return ret;
}
static int
tu102_devinit_wait(struct nvkm_device *device)
{
unsigned timeout = 50 + 2000;
do {
if (nvkm_rd32(device, 0x118128) & 0x00000001) {
if ((nvkm_rd32(device, 0x118234) & 0x000000ff) == 0xff)
return 0;
}
usleep_range(1000, 2000);
} while (timeout--);
return -ETIMEDOUT;
}
int
tu102_devinit_post(struct nvkm_devinit *base, bool post)
{
struct nv50_devinit *init = nv50_devinit(base);
int ret;
ret = tu102_devinit_wait(init->base.subdev.device);
if (ret)
return ret;
gm200_devinit_preos(init, post);
return 0;
}