This is a note to let you know that I've just added the patch titled drm/nouveau/devinit/tu102-: wait for GFW_BOOT_PROGRESS == COMPLETED to the 6.1-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: drm-nouveau-devinit-tu102-wait-for-gfw_boot_progress.patch and it can be found in the queue-6.1 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 67c46ea25374f0b2a0366fec602b3a5431afecc6 Author: Ben Skeggs <bskeggs@xxxxxxxxxx> Date: Tue Jan 31 08:37:13 2023 +1000 drm/nouveau/devinit/tu102-: wait for GFW_BOOT_PROGRESS == COMPLETED [ 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@xxxxxxxxxx> Reviewed-by: Lyude Paul <lyude@xxxxxxxxxx> Signed-off-by: Lyude Paul <lyude@xxxxxxxxxx> Link: https://patchwork.freedesktop.org/patch/msgid/20230130223715.1831509-1-bskeggs@xxxxxxxxxx Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/tu102.c b/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/tu102.c index 634f64f88fc8b..81a1ad2c88a7e 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/tu102.c +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/tu102.c @@ -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; }