1ba6113a90a0 removed a lot of the kernel GPU channel, but method 0x128 was important as otherwise the GPU spams us with `CACHE_ERROR` messages.
We use the blit subchannel inside our vblank handling, so we should keep at least this part. Closes: https://gitlab.freedesktop.org/drm/nouveau/-/issues/201 Fixes: 4a16dd9d18a0 ("drm/nouveau/kms: switch to drm fbdev helpers") Signed-off-by: Karol Herbst <kher...@redhat.com> --- drivers/gpu/drm/nouveau/nouveau_chan.c | 1 + drivers/gpu/drm/nouveau/nouveau_chan.h | 1 + drivers/gpu/drm/nouveau/nouveau_drm.c | 19 ++++++++++++++++--- 3 files changed, 18 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/nouveau/nouveau_chan.c b/drivers/gpu/drm/nouveau/nouveau_chan.c index e648ecd0c1a0..3dfbc374478e 100644 --- a/drivers/gpu/drm/nouveau/nouveau_chan.c +++ b/drivers/gpu/drm/nouveau/nouveau_chan.c @@ -90,6 +90,7 @@ nouveau_channel_del(struct nouveau_channel **pchan) if (cli) nouveau_svmm_part(chan->vmm->svmm, chan->inst); + nvif_object_dtor(&chan->blit); nvif_object_dtor(&chan->nvsw); nvif_object_dtor(&chan->gart); nvif_object_dtor(&chan->vram); diff --git a/drivers/gpu/drm/nouveau/nouveau_chan.h b/drivers/gpu/drm/nouveau/nouveau_chan.h index e06a8ffed31a..bad7466bd0d5 100644 --- a/drivers/gpu/drm/nouveau/nouveau_chan.h +++ b/drivers/gpu/drm/nouveau/nouveau_chan.h @@ -53,6 +53,7 @@ struct nouveau_channel { u32 user_put; struct nvif_object user; + struct nvif_object blit; struct nvif_event kill; atomic_t killed; diff --git a/drivers/gpu/drm/nouveau/nouveau_drm.c b/drivers/gpu/drm/nouveau/nouveau_drm.c index cc7c5b4a05fd..59e040a93a41 100644 --- a/drivers/gpu/drm/nouveau/nouveau_drm.c +++ b/drivers/gpu/drm/nouveau/nouveau_drm.c @@ -369,15 +369,28 @@ nouveau_accel_gr_init(struct nouveau_drm *drm) ret = nvif_object_ctor(&drm->channel->user, "drmNvsw", NVDRM_NVSW, nouveau_abi16_swclass(drm), NULL, 0, &drm->channel->nvsw); + + if (ret == 0) { + u32 blit_class = device->info.chipset >= 0x11 ? 0x009f : 0x005f; + ret = nvif_object_ctor(&drm->channel->user, "drmBlit", + 0x005f, blit_class, + NULL, 0, &drm->channel->blit); + } + if (ret == 0) { struct nvif_push *push = drm->channel->chan.push; - ret = PUSH_WAIT(push, 2); - if (ret == 0) + ret = PUSH_WAIT(push, 8); + if (ret == 0) { + PUSH_NVSQ(push, NV05F, 0x0000, drm->channel->blit.handle); + PUSH_NVSQ(push, NV09F, 0x0120, 0, + 0x0124, 1, + 0x0128, 2); PUSH_NVSQ(push, NV_SW, 0x0000, drm->channel->nvsw.handle); + } } if (ret) { - NV_ERROR(drm, "failed to allocate sw class, %d\n", ret); + NV_ERROR(drm, "failed to allocate sw or blit class, %d\n", ret); nouveau_accel_gr_fini(drm); return; } -- 2.40.1
