diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0312-drm-v3d-clean-caches-at-the-end-of-render-jobs-on-re.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.4/950-0312-drm-v3d-clean-caches-at-the-end-of-render-jobs-on-re.patch | 164 |
1 files changed, 0 insertions, 164 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0312-drm-v3d-clean-caches-at-the-end-of-render-jobs-on-re.patch b/target/linux/bcm27xx/patches-5.4/950-0312-drm-v3d-clean-caches-at-the-end-of-render-jobs-on-re.patch deleted file mode 100644 index 961c0cc92b..0000000000 --- a/target/linux/bcm27xx/patches-5.4/950-0312-drm-v3d-clean-caches-at-the-end-of-render-jobs-on-re.patch +++ /dev/null @@ -1,164 +0,0 @@ -From 141da39c2ce8dbf77773c54182244c14d96b301d Mon Sep 17 00:00:00 2001 -From: Iago Toral Quiroga <itoral@igalia.com> -Date: Tue, 3 Sep 2019 08:45:24 +0200 -Subject: [PATCH] drm/v3d: clean caches at the end of render jobs on - request from user space - -Extends the user space ioctl for CL submissions so it can include a request -to flush the cache once the CL execution has completed. Fixes memory -write violation messages reported by the kernel in workloads involving -shader memory writes (SSBOs, shader images, scratch, etc) which sometimes -also lead to GPU resets during Piglit and CTS workloads. - -v2: if v3d_job_init() fails we need to kfree() the job instead of - v3d_job_put() it (Eric Anholt). - -v3 (Eric Anholt): - - Drop _FLAG suffix from the new flag name. - - Add a new param so userspace can tell whether cache flushing is - implemented in the kernel. - -Signed-off-by: Iago Toral Quiroga <itoral@igalia.com> ---- - drivers/gpu/drm/v3d/v3d_drv.c | 3 +++ - drivers/gpu/drm/v3d/v3d_gem.c | 48 ++++++++++++++++++++++++++++++----- - include/uapi/drm/v3d_drm.h | 6 +++-- - 3 files changed, 49 insertions(+), 8 deletions(-) - ---- a/drivers/gpu/drm/v3d/v3d_drv.c -+++ b/drivers/gpu/drm/v3d/v3d_drv.c -@@ -120,6 +120,9 @@ static int v3d_get_param_ioctl(struct dr - case DRM_V3D_PARAM_SUPPORTS_CSD: - args->value = v3d_has_csd(v3d); - return 0; -+ case DRM_V3D_PARAM_SUPPORTS_CACHE_FLUSH: -+ args->value = 1; -+ return 0; - default: - DRM_DEBUG("Unknown parameter %d\n", args->param); - return -EINVAL; ---- a/drivers/gpu/drm/v3d/v3d_gem.c -+++ b/drivers/gpu/drm/v3d/v3d_gem.c -@@ -565,13 +565,16 @@ v3d_submit_cl_ioctl(struct drm_device *d - struct drm_v3d_submit_cl *args = data; - struct v3d_bin_job *bin = NULL; - struct v3d_render_job *render; -+ struct v3d_job *clean_job = NULL; -+ struct v3d_job *last_job; - struct ww_acquire_ctx acquire_ctx; - int ret = 0; - - trace_v3d_submit_cl_ioctl(&v3d->drm, args->rcl_start, args->rcl_end); - -- if (args->pad != 0) { -- DRM_INFO("pad must be zero: %d\n", args->pad); -+ if (args->flags != 0 && -+ args->flags != DRM_V3D_SUBMIT_CL_FLUSH_CACHE) { -+ DRM_INFO("invalid flags: %d\n", args->flags); - return -EINVAL; - } - -@@ -613,12 +616,31 @@ v3d_submit_cl_ioctl(struct drm_device *d - bin->render = render; - } - -- ret = v3d_lookup_bos(dev, file_priv, &render->base, -+ if (args->flags & DRM_V3D_SUBMIT_CL_FLUSH_CACHE) { -+ clean_job = kcalloc(1, sizeof(*clean_job), GFP_KERNEL); -+ if (!clean_job) { -+ ret = -ENOMEM; -+ goto fail; -+ } -+ -+ ret = v3d_job_init(v3d, file_priv, clean_job, v3d_job_free, 0); -+ if (ret) { -+ kfree(clean_job); -+ clean_job = NULL; -+ goto fail; -+ } -+ -+ last_job = clean_job; -+ } else { -+ last_job = &render->base; -+ } -+ -+ ret = v3d_lookup_bos(dev, file_priv, last_job, - args->bo_handles, args->bo_handle_count); - if (ret) - goto fail; - -- ret = v3d_lock_bo_reservations(&render->base, &acquire_ctx); -+ ret = v3d_lock_bo_reservations(last_job, &acquire_ctx); - if (ret) - goto fail; - -@@ -637,17 +659,29 @@ v3d_submit_cl_ioctl(struct drm_device *d - ret = v3d_push_job(v3d_priv, &render->base, V3D_RENDER); - if (ret) - goto fail_unreserve; -+ -+ if (clean_job) { -+ ret = drm_gem_fence_array_add(&clean_job->deps, -+ dma_fence_get(render->base.done_fence)); -+ if (ret) -+ goto fail_unreserve; -+ ret = v3d_push_job(v3d_priv, clean_job, V3D_CACHE_CLEAN); -+ if (ret) -+ goto fail_unreserve; -+ } - mutex_unlock(&v3d->sched_lock); - - v3d_attach_fences_and_unlock_reservation(file_priv, -- &render->base, -+ last_job, - &acquire_ctx, - args->out_sync, -- render->base.done_fence); -+ last_job->done_fence); - - if (bin) - v3d_job_put(&bin->base); - v3d_job_put(&render->base); -+ if (clean_job) -+ v3d_job_put(clean_job); - - return 0; - -@@ -659,6 +693,8 @@ fail: - if (bin) - v3d_job_put(&bin->base); - v3d_job_put(&render->base); -+ if (clean_job) -+ v3d_job_put(clean_job); - - return ret; - } ---- a/include/uapi/drm/v3d_drm.h -+++ b/include/uapi/drm/v3d_drm.h -@@ -48,6 +48,8 @@ extern "C" { - #define DRM_IOCTL_V3D_SUBMIT_TFU DRM_IOW(DRM_COMMAND_BASE + DRM_V3D_SUBMIT_TFU, struct drm_v3d_submit_tfu) - #define DRM_IOCTL_V3D_SUBMIT_CSD DRM_IOW(DRM_COMMAND_BASE + DRM_V3D_SUBMIT_CSD, struct drm_v3d_submit_csd) - -+#define DRM_V3D_SUBMIT_CL_FLUSH_CACHE 0x01 -+ - /** - * struct drm_v3d_submit_cl - ioctl argument for submitting commands to the 3D - * engine. -@@ -124,8 +126,7 @@ struct drm_v3d_submit_cl { - /* Number of BO handles passed in (size is that times 4). */ - __u32 bo_handle_count; - -- /* Pad, must be zero-filled. */ -- __u32 pad; -+ __u32 flags; - }; - - /** -@@ -193,6 +194,7 @@ enum drm_v3d_param { - DRM_V3D_PARAM_V3D_CORE0_IDENT2, - DRM_V3D_PARAM_SUPPORTS_TFU, - DRM_V3D_PARAM_SUPPORTS_CSD, -+ DRM_V3D_PARAM_SUPPORTS_CACHE_FLUSH, - }; - - struct drm_v3d_get_param { |