From d22915d22ded21fd5b24b60d174775789f173997 Mon Sep 17 00:00:00 2001 From: Ben Skeggs Date: Tue, 31 Jan 2023 08:37:13 +1000 Subject: [PATCH] drm/nouveau/devinit/tu102-: wait for GFW_BOOT_PROGRESS == COMPLETED 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 Reviewed-by: Lyude Paul Signed-off-by: Lyude Paul Link: https://patchwork.freedesktop.org/patch/msgid/20230130223715.1831509-1-bskeggs@redhat.com --- .../gpu/drm/nouveau/nvkm/subdev/devinit/tu102.c | 23 ++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/tu102.c b/drivers/gpu/drm/nouveau/nvkm/subdev/devinit/tu102.c index 634f64f..81a1ad2 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; } -- 2.7.4