@@ -12,7 +12,8 @@ v3d-y := \
v3d_perfmon.o \
v3d_trace_points.o \
v3d_sched.o \
- v3d_sysfs.o
+ v3d_sysfs.o \
+ v3d_submit.o
v3d-$(CONFIG_DEBUG_FS) += v3d_debugfs.o
@@ -401,17 +401,19 @@ struct dma_fence *v3d_fence_create(struct v3d_dev *v3d, enum v3d_queue queue);
/* v3d_gem.c */
int v3d_gem_init(struct drm_device *dev);
void v3d_gem_destroy(struct drm_device *dev);
+void v3d_reset(struct v3d_dev *v3d);
+void v3d_invalidate_caches(struct v3d_dev *v3d);
+void v3d_clean_caches(struct v3d_dev *v3d);
+
+/* v3d_submit.c */
+void v3d_job_cleanup(struct v3d_job *job);
+void v3d_job_put(struct v3d_job *job);
int v3d_submit_cl_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
int v3d_submit_tfu_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
int v3d_submit_csd_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
-void v3d_job_cleanup(struct v3d_job *job);
-void v3d_job_put(struct v3d_job *job);
-void v3d_reset(struct v3d_dev *v3d);
-void v3d_invalidate_caches(struct v3d_dev *v3d);
-void v3d_clean_caches(struct v3d_dev *v3d);
/* v3d_irq.c */
int v3d_irq_init(struct v3d_dev *v3d);
@@ -11,8 +11,6 @@
#include <linux/uaccess.h>
#include <drm/drm_managed.h>
-#include <drm/drm_syncobj.h>
-#include <uapi/drm/v3d_drm.h>
#include "v3d_drv.h"
#include "v3d_regs.h"
@@ -241,739 +239,6 @@ v3d_invalidate_caches(struct v3d_dev *v3d)
v3d_invalidate_slices(v3d, 0);
}
-/* Takes the reservation lock on all the BOs being referenced, so that
- * at queue submit time we can update the reservations.
- *
- * We don't lock the RCL the tile alloc/state BOs, or overflow memory
- * (all of which are on exec->unref_list). They're entirely private
- * to v3d, so we don't attach dma-buf fences to them.
- */
-static int
-v3d_lock_bo_reservations(struct v3d_job *job,
- struct ww_acquire_ctx *acquire_ctx)
-{
- int i, ret;
-
- ret = drm_gem_lock_reservations(job->bo, job->bo_count, acquire_ctx);
- if (ret)
- return ret;
-
- for (i = 0; i < job->bo_count; i++) {
- ret = dma_resv_reserve_fences(job->bo[i]->resv, 1);
- if (ret)
- goto fail;
-
- ret = drm_sched_job_add_implicit_dependencies(&job->base,
- job->bo[i], true);
- if (ret)
- goto fail;
- }
-
- return 0;
-
-fail:
- drm_gem_unlock_reservations(job->bo, job->bo_count, acquire_ctx);
- return ret;
-}
-
-/**
- * v3d_lookup_bos() - Sets up job->bo[] with the GEM objects
- * referenced by the job.
- * @dev: DRM device
- * @file_priv: DRM file for this fd
- * @job: V3D job being set up
- * @bo_handles: GEM handles
- * @bo_count: Number of GEM handles passed in
- *
- * The command validator needs to reference BOs by their index within
- * the submitted job's BO list. This does the validation of the job's
- * BO list and reference counting for the lifetime of the job.
- *
- * Note that this function doesn't need to unreference the BOs on
- * failure, because that will happen at v3d_exec_cleanup() time.
- */
-static int
-v3d_lookup_bos(struct drm_device *dev,
- struct drm_file *file_priv,
- struct v3d_job *job,
- u64 bo_handles,
- u32 bo_count)
-{
- job->bo_count = bo_count;
-
- if (!job->bo_count) {
- /* See comment on bo_index for why we have to check
- * this.
- */
- DRM_DEBUG("Rendering requires BOs\n");
- return -EINVAL;
- }
-
- return drm_gem_objects_lookup(file_priv,
- (void __user *)(uintptr_t)bo_handles,
- job->bo_count, &job->bo);
-}
-
-static void
-v3d_job_free(struct kref *ref)
-{
- struct v3d_job *job = container_of(ref, struct v3d_job, refcount);
- int i;
-
- if (job->bo) {
- for (i = 0; i < job->bo_count; i++)
- drm_gem_object_put(job->bo[i]);
- kvfree(job->bo);
- }
-
- dma_fence_put(job->irq_fence);
- dma_fence_put(job->done_fence);
-
- if (job->perfmon)
- v3d_perfmon_put(job->perfmon);
-
- kfree(job);
-}
-
-static void
-v3d_render_job_free(struct kref *ref)
-{
- struct v3d_render_job *job = container_of(ref, struct v3d_render_job,
- base.refcount);
- struct v3d_bo *bo, *save;
-
- list_for_each_entry_safe(bo, save, &job->unref_list, unref_head) {
- drm_gem_object_put(&bo->base.base);
- }
-
- v3d_job_free(ref);
-}
-
-void v3d_job_cleanup(struct v3d_job *job)
-{
- if (!job)
- return;
-
- drm_sched_job_cleanup(&job->base);
- v3d_job_put(job);
-}
-
-void v3d_job_put(struct v3d_job *job)
-{
- kref_put(&job->refcount, job->free);
-}
-
-static int
-v3d_job_init(struct v3d_dev *v3d, struct drm_file *file_priv,
- void **container, size_t size, void (*free)(struct kref *ref),
- u32 in_sync, struct v3d_submit_ext *se, enum v3d_queue queue)
-{
- struct v3d_file_priv *v3d_priv = file_priv->driver_priv;
- struct v3d_job *job;
- bool has_multisync = se && (se->flags & DRM_V3D_EXT_ID_MULTI_SYNC);
- int ret, i;
-
- *container = kcalloc(1, size, GFP_KERNEL);
- if (!*container) {
- DRM_ERROR("Cannot allocate memory for v3d job.");
- return -ENOMEM;
- }
-
- job = *container;
- job->v3d = v3d;
- job->free = free;
- job->file = file_priv;
-
- ret = drm_sched_job_init(&job->base, &v3d_priv->sched_entity[queue],
- 1, v3d_priv);
- if (ret)
- goto fail;
-
- if (has_multisync) {
- if (se->in_sync_count && se->wait_stage == queue) {
- struct drm_v3d_sem __user *handle = u64_to_user_ptr(se->in_syncs);
-
- for (i = 0; i < se->in_sync_count; i++) {
- struct drm_v3d_sem in;
-
- if (copy_from_user(&in, handle++, sizeof(in))) {
- ret = -EFAULT;
- DRM_DEBUG("Failed to copy wait dep handle.\n");
- goto fail_deps;
- }
- ret = drm_sched_job_add_syncobj_dependency(&job->base, file_priv, in.handle, 0);
-
- // TODO: Investigate why this was filtered out for the IOCTL.
- if (ret && ret != -ENOENT)
- goto fail_deps;
- }
- }
- } else {
- ret = drm_sched_job_add_syncobj_dependency(&job->base, file_priv, in_sync, 0);
-
- // TODO: Investigate why this was filtered out for the IOCTL.
- if (ret && ret != -ENOENT)
- goto fail_deps;
- }
-
- kref_init(&job->refcount);
-
- return 0;
-
-fail_deps:
- drm_sched_job_cleanup(&job->base);
-fail:
- kfree(*container);
- *container = NULL;
-
- return ret;
-}
-
-static void
-v3d_push_job(struct v3d_job *job)
-{
- drm_sched_job_arm(&job->base);
-
- job->done_fence = dma_fence_get(&job->base.s_fence->finished);
-
- /* put by scheduler job completion */
- kref_get(&job->refcount);
-
- drm_sched_entity_push_job(&job->base);
-}
-
-static void
-v3d_attach_fences_and_unlock_reservation(struct drm_file *file_priv,
- struct v3d_job *job,
- struct ww_acquire_ctx *acquire_ctx,
- u32 out_sync,
- struct v3d_submit_ext *se,
- struct dma_fence *done_fence)
-{
- struct drm_syncobj *sync_out;
- bool has_multisync = se && (se->flags & DRM_V3D_EXT_ID_MULTI_SYNC);
- int i;
-
- for (i = 0; i < job->bo_count; i++) {
- /* XXX: Use shared fences for read-only objects. */
- dma_resv_add_fence(job->bo[i]->resv, job->done_fence,
- DMA_RESV_USAGE_WRITE);
- }
-
- drm_gem_unlock_reservations(job->bo, job->bo_count, acquire_ctx);
-
- /* Update the return sync object for the job */
- /* If it only supports a single signal semaphore*/
- if (!has_multisync) {
- sync_out = drm_syncobj_find(file_priv, out_sync);
- if (sync_out) {
- drm_syncobj_replace_fence(sync_out, done_fence);
- drm_syncobj_put(sync_out);
- }
- return;
- }
-
- /* If multiple semaphores extension is supported */
- if (se->out_sync_count) {
- for (i = 0; i < se->out_sync_count; i++) {
- drm_syncobj_replace_fence(se->out_syncs[i].syncobj,
- done_fence);
- drm_syncobj_put(se->out_syncs[i].syncobj);
- }
- kvfree(se->out_syncs);
- }
-}
-
-static void
-v3d_put_multisync_post_deps(struct v3d_submit_ext *se)
-{
- unsigned int i;
-
- if (!(se && se->out_sync_count))
- return;
-
- for (i = 0; i < se->out_sync_count; i++)
- drm_syncobj_put(se->out_syncs[i].syncobj);
- kvfree(se->out_syncs);
-}
-
-static int
-v3d_get_multisync_post_deps(struct drm_file *file_priv,
- struct v3d_submit_ext *se,
- u32 count, u64 handles)
-{
- struct drm_v3d_sem __user *post_deps;
- int i, ret;
-
- if (!count)
- return 0;
-
- se->out_syncs = (struct v3d_submit_outsync *)
- kvmalloc_array(count,
- sizeof(struct v3d_submit_outsync),
- GFP_KERNEL);
- if (!se->out_syncs)
- return -ENOMEM;
-
- post_deps = u64_to_user_ptr(handles);
-
- for (i = 0; i < count; i++) {
- struct drm_v3d_sem out;
-
- if (copy_from_user(&out, post_deps++, sizeof(out))) {
- ret = -EFAULT;
- DRM_DEBUG("Failed to copy post dep handles\n");
- goto fail;
- }
-
- se->out_syncs[i].syncobj = drm_syncobj_find(file_priv,
- out.handle);
- if (!se->out_syncs[i].syncobj) {
- ret = -EINVAL;
- goto fail;
- }
- }
- se->out_sync_count = count;
-
- return 0;
-
-fail:
- for (i--; i >= 0; i--)
- drm_syncobj_put(se->out_syncs[i].syncobj);
- kvfree(se->out_syncs);
-
- return ret;
-}
-
-/* Get data for multiple binary semaphores synchronization. Parse syncobj
- * to be signaled when job completes (out_sync).
- */
-static int
-v3d_get_multisync_submit_deps(struct drm_file *file_priv,
- struct drm_v3d_extension __user *ext,
- void *data)
-{
- struct drm_v3d_multi_sync multisync;
- struct v3d_submit_ext *se = data;
- int ret;
-
- if (copy_from_user(&multisync, ext, sizeof(multisync)))
- return -EFAULT;
-
- if (multisync.pad)
- return -EINVAL;
-
- ret = v3d_get_multisync_post_deps(file_priv, data, multisync.out_sync_count,
- multisync.out_syncs);
- if (ret)
- return ret;
-
- se->in_sync_count = multisync.in_sync_count;
- se->in_syncs = multisync.in_syncs;
- se->flags |= DRM_V3D_EXT_ID_MULTI_SYNC;
- se->wait_stage = multisync.wait_stage;
-
- return 0;
-}
-
-/* Whenever userspace sets ioctl extensions, v3d_get_extensions parses data
- * according to the extension id (name).
- */
-static int
-v3d_get_extensions(struct drm_file *file_priv,
- u64 ext_handles,
- void *data)
-{
- struct drm_v3d_extension __user *user_ext;
- int ret;
-
- user_ext = u64_to_user_ptr(ext_handles);
- while (user_ext) {
- struct drm_v3d_extension ext;
-
- if (copy_from_user(&ext, user_ext, sizeof(ext))) {
- DRM_DEBUG("Failed to copy submit extension\n");
- return -EFAULT;
- }
-
- switch (ext.id) {
- case DRM_V3D_EXT_ID_MULTI_SYNC:
- ret = v3d_get_multisync_submit_deps(file_priv, user_ext, data);
- if (ret)
- return ret;
- break;
- default:
- DRM_DEBUG_DRIVER("Unknown extension id: %d\n", ext.id);
- return -EINVAL;
- }
-
- user_ext = u64_to_user_ptr(ext.next);
- }
-
- return 0;
-}
-
-/**
- * v3d_submit_cl_ioctl() - Submits a job (frame) to the V3D.
- * @dev: DRM device
- * @data: ioctl argument
- * @file_priv: DRM file for this fd
- *
- * This is the main entrypoint for userspace to submit a 3D frame to
- * the GPU. Userspace provides the binner command list (if
- * applicable), and the kernel sets up the render command list to draw
- * to the framebuffer described in the ioctl, using the command lists
- * that the 3D engine's binner will produce.
- */
-int
-v3d_submit_cl_ioctl(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
-{
- struct v3d_dev *v3d = to_v3d_dev(dev);
- struct v3d_file_priv *v3d_priv = file_priv->driver_priv;
- struct drm_v3d_submit_cl *args = data;
- struct v3d_submit_ext se = {0};
- struct v3d_bin_job *bin = NULL;
- struct v3d_render_job *render = NULL;
- 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)
- return -EINVAL;
-
- if (args->flags &&
- args->flags & ~(DRM_V3D_SUBMIT_CL_FLUSH_CACHE |
- DRM_V3D_SUBMIT_EXTENSION)) {
- DRM_INFO("invalid flags: %d\n", args->flags);
- return -EINVAL;
- }
-
- if (args->flags & DRM_V3D_SUBMIT_EXTENSION) {
- ret = v3d_get_extensions(file_priv, args->extensions, &se);
- if (ret) {
- DRM_DEBUG("Failed to get extensions.\n");
- return ret;
- }
- }
-
- ret = v3d_job_init(v3d, file_priv, (void *)&render, sizeof(*render),
- v3d_render_job_free, args->in_sync_rcl, &se, V3D_RENDER);
- if (ret)
- goto fail;
-
- render->start = args->rcl_start;
- render->end = args->rcl_end;
- INIT_LIST_HEAD(&render->unref_list);
-
- if (args->bcl_start != args->bcl_end) {
- ret = v3d_job_init(v3d, file_priv, (void *)&bin, sizeof(*bin),
- v3d_job_free, args->in_sync_bcl, &se, V3D_BIN);
- if (ret)
- goto fail;
-
- bin->start = args->bcl_start;
- bin->end = args->bcl_end;
- bin->qma = args->qma;
- bin->qms = args->qms;
- bin->qts = args->qts;
- bin->render = render;
- }
-
- if (args->flags & DRM_V3D_SUBMIT_CL_FLUSH_CACHE) {
- ret = v3d_job_init(v3d, file_priv, (void *)&clean_job, sizeof(*clean_job),
- v3d_job_free, 0, NULL, V3D_CACHE_CLEAN);
- if (ret)
- 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(last_job, &acquire_ctx);
- if (ret)
- goto fail;
-
- if (args->perfmon_id) {
- render->base.perfmon = v3d_perfmon_find(v3d_priv,
- args->perfmon_id);
-
- if (!render->base.perfmon) {
- ret = -ENOENT;
- goto fail_perfmon;
- }
- }
-
- mutex_lock(&v3d->sched_lock);
- if (bin) {
- bin->base.perfmon = render->base.perfmon;
- v3d_perfmon_get(bin->base.perfmon);
- v3d_push_job(&bin->base);
-
- ret = drm_sched_job_add_dependency(&render->base.base,
- dma_fence_get(bin->base.done_fence));
- if (ret)
- goto fail_unreserve;
- }
-
- v3d_push_job(&render->base);
-
- if (clean_job) {
- struct dma_fence *render_fence =
- dma_fence_get(render->base.done_fence);
- ret = drm_sched_job_add_dependency(&clean_job->base,
- render_fence);
- if (ret)
- goto fail_unreserve;
- clean_job->perfmon = render->base.perfmon;
- v3d_perfmon_get(clean_job->perfmon);
- v3d_push_job(clean_job);
- }
-
- mutex_unlock(&v3d->sched_lock);
-
- v3d_attach_fences_and_unlock_reservation(file_priv,
- last_job,
- &acquire_ctx,
- args->out_sync,
- &se,
- 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;
-
-fail_unreserve:
- mutex_unlock(&v3d->sched_lock);
-fail_perfmon:
- drm_gem_unlock_reservations(last_job->bo,
- last_job->bo_count, &acquire_ctx);
-fail:
- v3d_job_cleanup((void *)bin);
- v3d_job_cleanup((void *)render);
- v3d_job_cleanup(clean_job);
- v3d_put_multisync_post_deps(&se);
-
- return ret;
-}
-
-/**
- * v3d_submit_tfu_ioctl() - Submits a TFU (texture formatting) job to the V3D.
- * @dev: DRM device
- * @data: ioctl argument
- * @file_priv: DRM file for this fd
- *
- * Userspace provides the register setup for the TFU, which we don't
- * need to validate since the TFU is behind the MMU.
- */
-int
-v3d_submit_tfu_ioctl(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
-{
- struct v3d_dev *v3d = to_v3d_dev(dev);
- struct drm_v3d_submit_tfu *args = data;
- struct v3d_submit_ext se = {0};
- struct v3d_tfu_job *job = NULL;
- struct ww_acquire_ctx acquire_ctx;
- int ret = 0;
-
- trace_v3d_submit_tfu_ioctl(&v3d->drm, args->iia);
-
- if (args->flags && !(args->flags & DRM_V3D_SUBMIT_EXTENSION)) {
- DRM_DEBUG("invalid flags: %d\n", args->flags);
- return -EINVAL;
- }
-
- if (args->flags & DRM_V3D_SUBMIT_EXTENSION) {
- ret = v3d_get_extensions(file_priv, args->extensions, &se);
- if (ret) {
- DRM_DEBUG("Failed to get extensions.\n");
- return ret;
- }
- }
-
- ret = v3d_job_init(v3d, file_priv, (void *)&job, sizeof(*job),
- v3d_job_free, args->in_sync, &se, V3D_TFU);
- if (ret)
- goto fail;
-
- job->base.bo = kcalloc(ARRAY_SIZE(args->bo_handles),
- sizeof(*job->base.bo), GFP_KERNEL);
- if (!job->base.bo) {
- ret = -ENOMEM;
- goto fail;
- }
-
- job->args = *args;
-
- for (job->base.bo_count = 0;
- job->base.bo_count < ARRAY_SIZE(args->bo_handles);
- job->base.bo_count++) {
- struct drm_gem_object *bo;
-
- if (!args->bo_handles[job->base.bo_count])
- break;
-
- bo = drm_gem_object_lookup(file_priv, args->bo_handles[job->base.bo_count]);
- if (!bo) {
- DRM_DEBUG("Failed to look up GEM BO %d: %d\n",
- job->base.bo_count,
- args->bo_handles[job->base.bo_count]);
- ret = -ENOENT;
- goto fail;
- }
- job->base.bo[job->base.bo_count] = bo;
- }
-
- ret = v3d_lock_bo_reservations(&job->base, &acquire_ctx);
- if (ret)
- goto fail;
-
- mutex_lock(&v3d->sched_lock);
- v3d_push_job(&job->base);
- mutex_unlock(&v3d->sched_lock);
-
- v3d_attach_fences_and_unlock_reservation(file_priv,
- &job->base, &acquire_ctx,
- args->out_sync,
- &se,
- job->base.done_fence);
-
- v3d_job_put(&job->base);
-
- return 0;
-
-fail:
- v3d_job_cleanup((void *)job);
- v3d_put_multisync_post_deps(&se);
-
- return ret;
-}
-
-/**
- * v3d_submit_csd_ioctl() - Submits a CSD (texture formatting) job to the V3D.
- * @dev: DRM device
- * @data: ioctl argument
- * @file_priv: DRM file for this fd
- *
- * Userspace provides the register setup for the CSD, which we don't
- * need to validate since the CSD is behind the MMU.
- */
-int
-v3d_submit_csd_ioctl(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
-{
- struct v3d_dev *v3d = to_v3d_dev(dev);
- struct v3d_file_priv *v3d_priv = file_priv->driver_priv;
- struct drm_v3d_submit_csd *args = data;
- struct v3d_submit_ext se = {0};
- struct v3d_csd_job *job = NULL;
- struct v3d_job *clean_job = NULL;
- struct ww_acquire_ctx acquire_ctx;
- int ret;
-
- trace_v3d_submit_csd_ioctl(&v3d->drm, args->cfg[5], args->cfg[6]);
-
- if (args->pad)
- return -EINVAL;
-
- if (!v3d_has_csd(v3d)) {
- DRM_DEBUG("Attempting CSD submit on non-CSD hardware\n");
- return -EINVAL;
- }
-
- if (args->flags && !(args->flags & DRM_V3D_SUBMIT_EXTENSION)) {
- DRM_INFO("invalid flags: %d\n", args->flags);
- return -EINVAL;
- }
-
- if (args->flags & DRM_V3D_SUBMIT_EXTENSION) {
- ret = v3d_get_extensions(file_priv, args->extensions, &se);
- if (ret) {
- DRM_DEBUG("Failed to get extensions.\n");
- return ret;
- }
- }
-
- ret = v3d_job_init(v3d, file_priv, (void *)&job, sizeof(*job),
- v3d_job_free, args->in_sync, &se, V3D_CSD);
- if (ret)
- goto fail;
-
- ret = v3d_job_init(v3d, file_priv, (void *)&clean_job, sizeof(*clean_job),
- v3d_job_free, 0, NULL, V3D_CACHE_CLEAN);
- if (ret)
- goto fail;
-
- job->args = *args;
-
- ret = v3d_lookup_bos(dev, file_priv, clean_job,
- args->bo_handles, args->bo_handle_count);
- if (ret)
- goto fail;
-
- ret = v3d_lock_bo_reservations(clean_job, &acquire_ctx);
- if (ret)
- goto fail;
-
- if (args->perfmon_id) {
- job->base.perfmon = v3d_perfmon_find(v3d_priv,
- args->perfmon_id);
- if (!job->base.perfmon) {
- ret = -ENOENT;
- goto fail_perfmon;
- }
- }
-
- mutex_lock(&v3d->sched_lock);
- v3d_push_job(&job->base);
-
- ret = drm_sched_job_add_dependency(&clean_job->base,
- dma_fence_get(job->base.done_fence));
- if (ret)
- goto fail_unreserve;
-
- v3d_push_job(clean_job);
- mutex_unlock(&v3d->sched_lock);
-
- v3d_attach_fences_and_unlock_reservation(file_priv,
- clean_job,
- &acquire_ctx,
- args->out_sync,
- &se,
- clean_job->done_fence);
-
- v3d_job_put(&job->base);
- v3d_job_put(clean_job);
-
- return 0;
-
-fail_unreserve:
- mutex_unlock(&v3d->sched_lock);
-fail_perfmon:
- drm_gem_unlock_reservations(clean_job->bo, clean_job->bo_count,
- &acquire_ctx);
-fail:
- v3d_job_cleanup((void *)job);
- v3d_job_cleanup(clean_job);
- v3d_put_multisync_post_deps(&se);
-
- return ret;
-}
-
int
v3d_gem_init(struct drm_device *dev)
{
new file mode 100644
@@ -0,0 +1,744 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2014-2018 Broadcom
+ * Copyright (C) 2023 Raspberry Pi
+ */
+
+#include <drm/drm_syncobj.h>
+
+#include "v3d_drv.h"
+#include "v3d_regs.h"
+#include "v3d_trace.h"
+
+/* Takes the reservation lock on all the BOs being referenced, so that
+ * at queue submit time we can update the reservations.
+ *
+ * We don't lock the RCL the tile alloc/state BOs, or overflow memory
+ * (all of which are on exec->unref_list). They're entirely private
+ * to v3d, so we don't attach dma-buf fences to them.
+ */
+static int
+v3d_lock_bo_reservations(struct v3d_job *job,
+ struct ww_acquire_ctx *acquire_ctx)
+{
+ int i, ret;
+
+ ret = drm_gem_lock_reservations(job->bo, job->bo_count, acquire_ctx);
+ if (ret)
+ return ret;
+
+ for (i = 0; i < job->bo_count; i++) {
+ ret = dma_resv_reserve_fences(job->bo[i]->resv, 1);
+ if (ret)
+ goto fail;
+
+ ret = drm_sched_job_add_implicit_dependencies(&job->base,
+ job->bo[i], true);
+ if (ret)
+ goto fail;
+ }
+
+ return 0;
+
+fail:
+ drm_gem_unlock_reservations(job->bo, job->bo_count, acquire_ctx);
+ return ret;
+}
+
+/**
+ * v3d_lookup_bos() - Sets up job->bo[] with the GEM objects
+ * referenced by the job.
+ * @dev: DRM device
+ * @file_priv: DRM file for this fd
+ * @job: V3D job being set up
+ * @bo_handles: GEM handles
+ * @bo_count: Number of GEM handles passed in
+ *
+ * The command validator needs to reference BOs by their index within
+ * the submitted job's BO list. This does the validation of the job's
+ * BO list and reference counting for the lifetime of the job.
+ *
+ * Note that this function doesn't need to unreference the BOs on
+ * failure, because that will happen at v3d_exec_cleanup() time.
+ */
+static int
+v3d_lookup_bos(struct drm_device *dev,
+ struct drm_file *file_priv,
+ struct v3d_job *job,
+ u64 bo_handles,
+ u32 bo_count)
+{
+ job->bo_count = bo_count;
+
+ if (!job->bo_count) {
+ /* See comment on bo_index for why we have to check
+ * this.
+ */
+ DRM_DEBUG("Rendering requires BOs\n");
+ return -EINVAL;
+ }
+
+ return drm_gem_objects_lookup(file_priv,
+ (void __user *)(uintptr_t)bo_handles,
+ job->bo_count, &job->bo);
+}
+
+static void
+v3d_job_free(struct kref *ref)
+{
+ struct v3d_job *job = container_of(ref, struct v3d_job, refcount);
+ int i;
+
+ if (job->bo) {
+ for (i = 0; i < job->bo_count; i++)
+ drm_gem_object_put(job->bo[i]);
+ kvfree(job->bo);
+ }
+
+ dma_fence_put(job->irq_fence);
+ dma_fence_put(job->done_fence);
+
+ if (job->perfmon)
+ v3d_perfmon_put(job->perfmon);
+
+ kfree(job);
+}
+
+static void
+v3d_render_job_free(struct kref *ref)
+{
+ struct v3d_render_job *job = container_of(ref, struct v3d_render_job,
+ base.refcount);
+ struct v3d_bo *bo, *save;
+
+ list_for_each_entry_safe(bo, save, &job->unref_list, unref_head) {
+ drm_gem_object_put(&bo->base.base);
+ }
+
+ v3d_job_free(ref);
+}
+
+void v3d_job_cleanup(struct v3d_job *job)
+{
+ if (!job)
+ return;
+
+ drm_sched_job_cleanup(&job->base);
+ v3d_job_put(job);
+}
+
+void v3d_job_put(struct v3d_job *job)
+{
+ kref_put(&job->refcount, job->free);
+}
+
+static int
+v3d_job_init(struct v3d_dev *v3d, struct drm_file *file_priv,
+ void **container, size_t size, void (*free)(struct kref *ref),
+ u32 in_sync, struct v3d_submit_ext *se, enum v3d_queue queue)
+{
+ struct v3d_file_priv *v3d_priv = file_priv->driver_priv;
+ struct v3d_job *job;
+ bool has_multisync = se && (se->flags & DRM_V3D_EXT_ID_MULTI_SYNC);
+ int ret, i;
+
+ *container = kcalloc(1, size, GFP_KERNEL);
+ if (!*container) {
+ DRM_ERROR("Cannot allocate memory for v3d job.");
+ return -ENOMEM;
+ }
+
+ job = *container;
+ job->v3d = v3d;
+ job->free = free;
+ job->file = file_priv;
+
+ ret = drm_sched_job_init(&job->base, &v3d_priv->sched_entity[queue],
+ 1, v3d_priv);
+ if (ret)
+ goto fail;
+
+ if (has_multisync) {
+ if (se->in_sync_count && se->wait_stage == queue) {
+ struct drm_v3d_sem __user *handle = u64_to_user_ptr(se->in_syncs);
+
+ for (i = 0; i < se->in_sync_count; i++) {
+ struct drm_v3d_sem in;
+
+ if (copy_from_user(&in, handle++, sizeof(in))) {
+ ret = -EFAULT;
+ DRM_DEBUG("Failed to copy wait dep handle.\n");
+ goto fail_deps;
+ }
+ ret = drm_sched_job_add_syncobj_dependency(&job->base, file_priv, in.handle, 0);
+
+ // TODO: Investigate why this was filtered out for the IOCTL.
+ if (ret && ret != -ENOENT)
+ goto fail_deps;
+ }
+ }
+ } else {
+ ret = drm_sched_job_add_syncobj_dependency(&job->base, file_priv, in_sync, 0);
+
+ // TODO: Investigate why this was filtered out for the IOCTL.
+ if (ret && ret != -ENOENT)
+ goto fail_deps;
+ }
+
+ kref_init(&job->refcount);
+
+ return 0;
+
+fail_deps:
+ drm_sched_job_cleanup(&job->base);
+fail:
+ kfree(*container);
+ *container = NULL;
+
+ return ret;
+}
+
+static void
+v3d_push_job(struct v3d_job *job)
+{
+ drm_sched_job_arm(&job->base);
+
+ job->done_fence = dma_fence_get(&job->base.s_fence->finished);
+
+ /* put by scheduler job completion */
+ kref_get(&job->refcount);
+
+ drm_sched_entity_push_job(&job->base);
+}
+
+static void
+v3d_attach_fences_and_unlock_reservation(struct drm_file *file_priv,
+ struct v3d_job *job,
+ struct ww_acquire_ctx *acquire_ctx,
+ u32 out_sync,
+ struct v3d_submit_ext *se,
+ struct dma_fence *done_fence)
+{
+ struct drm_syncobj *sync_out;
+ bool has_multisync = se && (se->flags & DRM_V3D_EXT_ID_MULTI_SYNC);
+ int i;
+
+ for (i = 0; i < job->bo_count; i++) {
+ /* XXX: Use shared fences for read-only objects. */
+ dma_resv_add_fence(job->bo[i]->resv, job->done_fence,
+ DMA_RESV_USAGE_WRITE);
+ }
+
+ drm_gem_unlock_reservations(job->bo, job->bo_count, acquire_ctx);
+
+ /* Update the return sync object for the job */
+ /* If it only supports a single signal semaphore*/
+ if (!has_multisync) {
+ sync_out = drm_syncobj_find(file_priv, out_sync);
+ if (sync_out) {
+ drm_syncobj_replace_fence(sync_out, done_fence);
+ drm_syncobj_put(sync_out);
+ }
+ return;
+ }
+
+ /* If multiple semaphores extension is supported */
+ if (se->out_sync_count) {
+ for (i = 0; i < se->out_sync_count; i++) {
+ drm_syncobj_replace_fence(se->out_syncs[i].syncobj,
+ done_fence);
+ drm_syncobj_put(se->out_syncs[i].syncobj);
+ }
+ kvfree(se->out_syncs);
+ }
+}
+
+static void
+v3d_put_multisync_post_deps(struct v3d_submit_ext *se)
+{
+ unsigned int i;
+
+ if (!(se && se->out_sync_count))
+ return;
+
+ for (i = 0; i < se->out_sync_count; i++)
+ drm_syncobj_put(se->out_syncs[i].syncobj);
+ kvfree(se->out_syncs);
+}
+
+static int
+v3d_get_multisync_post_deps(struct drm_file *file_priv,
+ struct v3d_submit_ext *se,
+ u32 count, u64 handles)
+{
+ struct drm_v3d_sem __user *post_deps;
+ int i, ret;
+
+ if (!count)
+ return 0;
+
+ se->out_syncs = (struct v3d_submit_outsync *)
+ kvmalloc_array(count,
+ sizeof(struct v3d_submit_outsync),
+ GFP_KERNEL);
+ if (!se->out_syncs)
+ return -ENOMEM;
+
+ post_deps = u64_to_user_ptr(handles);
+
+ for (i = 0; i < count; i++) {
+ struct drm_v3d_sem out;
+
+ if (copy_from_user(&out, post_deps++, sizeof(out))) {
+ ret = -EFAULT;
+ DRM_DEBUG("Failed to copy post dep handles\n");
+ goto fail;
+ }
+
+ se->out_syncs[i].syncobj = drm_syncobj_find(file_priv,
+ out.handle);
+ if (!se->out_syncs[i].syncobj) {
+ ret = -EINVAL;
+ goto fail;
+ }
+ }
+ se->out_sync_count = count;
+
+ return 0;
+
+fail:
+ for (i--; i >= 0; i--)
+ drm_syncobj_put(se->out_syncs[i].syncobj);
+ kvfree(se->out_syncs);
+
+ return ret;
+}
+
+/* Get data for multiple binary semaphores synchronization. Parse syncobj
+ * to be signaled when job completes (out_sync).
+ */
+static int
+v3d_get_multisync_submit_deps(struct drm_file *file_priv,
+ struct drm_v3d_extension __user *ext,
+ void *data)
+{
+ struct drm_v3d_multi_sync multisync;
+ struct v3d_submit_ext *se = data;
+ int ret;
+
+ if (copy_from_user(&multisync, ext, sizeof(multisync)))
+ return -EFAULT;
+
+ if (multisync.pad)
+ return -EINVAL;
+
+ ret = v3d_get_multisync_post_deps(file_priv, data, multisync.out_sync_count,
+ multisync.out_syncs);
+ if (ret)
+ return ret;
+
+ se->in_sync_count = multisync.in_sync_count;
+ se->in_syncs = multisync.in_syncs;
+ se->flags |= DRM_V3D_EXT_ID_MULTI_SYNC;
+ se->wait_stage = multisync.wait_stage;
+
+ return 0;
+}
+
+/* Whenever userspace sets ioctl extensions, v3d_get_extensions parses data
+ * according to the extension id (name).
+ */
+static int
+v3d_get_extensions(struct drm_file *file_priv,
+ u64 ext_handles,
+ void *data)
+{
+ struct drm_v3d_extension __user *user_ext;
+ int ret;
+
+ user_ext = u64_to_user_ptr(ext_handles);
+ while (user_ext) {
+ struct drm_v3d_extension ext;
+
+ if (copy_from_user(&ext, user_ext, sizeof(ext))) {
+ DRM_DEBUG("Failed to copy submit extension\n");
+ return -EFAULT;
+ }
+
+ switch (ext.id) {
+ case DRM_V3D_EXT_ID_MULTI_SYNC:
+ ret = v3d_get_multisync_submit_deps(file_priv, user_ext, data);
+ if (ret)
+ return ret;
+ break;
+ default:
+ DRM_DEBUG_DRIVER("Unknown extension id: %d\n", ext.id);
+ return -EINVAL;
+ }
+
+ user_ext = u64_to_user_ptr(ext.next);
+ }
+
+ return 0;
+}
+
+/**
+ * v3d_submit_cl_ioctl() - Submits a job (frame) to the V3D.
+ * @dev: DRM device
+ * @data: ioctl argument
+ * @file_priv: DRM file for this fd
+ *
+ * This is the main entrypoint for userspace to submit a 3D frame to
+ * the GPU. Userspace provides the binner command list (if
+ * applicable), and the kernel sets up the render command list to draw
+ * to the framebuffer described in the ioctl, using the command lists
+ * that the 3D engine's binner will produce.
+ */
+int
+v3d_submit_cl_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
+{
+ struct v3d_dev *v3d = to_v3d_dev(dev);
+ struct v3d_file_priv *v3d_priv = file_priv->driver_priv;
+ struct drm_v3d_submit_cl *args = data;
+ struct v3d_submit_ext se = {0};
+ struct v3d_bin_job *bin = NULL;
+ struct v3d_render_job *render = NULL;
+ 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)
+ return -EINVAL;
+
+ if (args->flags &&
+ args->flags & ~(DRM_V3D_SUBMIT_CL_FLUSH_CACHE |
+ DRM_V3D_SUBMIT_EXTENSION)) {
+ DRM_INFO("invalid flags: %d\n", args->flags);
+ return -EINVAL;
+ }
+
+ if (args->flags & DRM_V3D_SUBMIT_EXTENSION) {
+ ret = v3d_get_extensions(file_priv, args->extensions, &se);
+ if (ret) {
+ DRM_DEBUG("Failed to get extensions.\n");
+ return ret;
+ }
+ }
+
+ ret = v3d_job_init(v3d, file_priv, (void *)&render, sizeof(*render),
+ v3d_render_job_free, args->in_sync_rcl, &se, V3D_RENDER);
+ if (ret)
+ goto fail;
+
+ render->start = args->rcl_start;
+ render->end = args->rcl_end;
+ INIT_LIST_HEAD(&render->unref_list);
+
+ if (args->bcl_start != args->bcl_end) {
+ ret = v3d_job_init(v3d, file_priv, (void *)&bin, sizeof(*bin),
+ v3d_job_free, args->in_sync_bcl, &se, V3D_BIN);
+ if (ret)
+ goto fail;
+
+ bin->start = args->bcl_start;
+ bin->end = args->bcl_end;
+ bin->qma = args->qma;
+ bin->qms = args->qms;
+ bin->qts = args->qts;
+ bin->render = render;
+ }
+
+ if (args->flags & DRM_V3D_SUBMIT_CL_FLUSH_CACHE) {
+ ret = v3d_job_init(v3d, file_priv, (void *)&clean_job, sizeof(*clean_job),
+ v3d_job_free, 0, NULL, V3D_CACHE_CLEAN);
+ if (ret)
+ 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(last_job, &acquire_ctx);
+ if (ret)
+ goto fail;
+
+ if (args->perfmon_id) {
+ render->base.perfmon = v3d_perfmon_find(v3d_priv,
+ args->perfmon_id);
+
+ if (!render->base.perfmon) {
+ ret = -ENOENT;
+ goto fail_perfmon;
+ }
+ }
+
+ mutex_lock(&v3d->sched_lock);
+ if (bin) {
+ bin->base.perfmon = render->base.perfmon;
+ v3d_perfmon_get(bin->base.perfmon);
+ v3d_push_job(&bin->base);
+
+ ret = drm_sched_job_add_dependency(&render->base.base,
+ dma_fence_get(bin->base.done_fence));
+ if (ret)
+ goto fail_unreserve;
+ }
+
+ v3d_push_job(&render->base);
+
+ if (clean_job) {
+ struct dma_fence *render_fence =
+ dma_fence_get(render->base.done_fence);
+ ret = drm_sched_job_add_dependency(&clean_job->base,
+ render_fence);
+ if (ret)
+ goto fail_unreserve;
+ clean_job->perfmon = render->base.perfmon;
+ v3d_perfmon_get(clean_job->perfmon);
+ v3d_push_job(clean_job);
+ }
+
+ mutex_unlock(&v3d->sched_lock);
+
+ v3d_attach_fences_and_unlock_reservation(file_priv,
+ last_job,
+ &acquire_ctx,
+ args->out_sync,
+ &se,
+ 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;
+
+fail_unreserve:
+ mutex_unlock(&v3d->sched_lock);
+fail_perfmon:
+ drm_gem_unlock_reservations(last_job->bo,
+ last_job->bo_count, &acquire_ctx);
+fail:
+ v3d_job_cleanup((void *)bin);
+ v3d_job_cleanup((void *)render);
+ v3d_job_cleanup(clean_job);
+ v3d_put_multisync_post_deps(&se);
+
+ return ret;
+}
+
+/**
+ * v3d_submit_tfu_ioctl() - Submits a TFU (texture formatting) job to the V3D.
+ * @dev: DRM device
+ * @data: ioctl argument
+ * @file_priv: DRM file for this fd
+ *
+ * Userspace provides the register setup for the TFU, which we don't
+ * need to validate since the TFU is behind the MMU.
+ */
+int
+v3d_submit_tfu_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
+{
+ struct v3d_dev *v3d = to_v3d_dev(dev);
+ struct drm_v3d_submit_tfu *args = data;
+ struct v3d_submit_ext se = {0};
+ struct v3d_tfu_job *job = NULL;
+ struct ww_acquire_ctx acquire_ctx;
+ int ret = 0;
+
+ trace_v3d_submit_tfu_ioctl(&v3d->drm, args->iia);
+
+ if (args->flags && !(args->flags & DRM_V3D_SUBMIT_EXTENSION)) {
+ DRM_DEBUG("invalid flags: %d\n", args->flags);
+ return -EINVAL;
+ }
+
+ if (args->flags & DRM_V3D_SUBMIT_EXTENSION) {
+ ret = v3d_get_extensions(file_priv, args->extensions, &se);
+ if (ret) {
+ DRM_DEBUG("Failed to get extensions.\n");
+ return ret;
+ }
+ }
+
+ ret = v3d_job_init(v3d, file_priv, (void *)&job, sizeof(*job),
+ v3d_job_free, args->in_sync, &se, V3D_TFU);
+ if (ret)
+ goto fail;
+
+ job->base.bo = kcalloc(ARRAY_SIZE(args->bo_handles),
+ sizeof(*job->base.bo), GFP_KERNEL);
+ if (!job->base.bo) {
+ ret = -ENOMEM;
+ goto fail;
+ }
+
+ job->args = *args;
+
+ for (job->base.bo_count = 0;
+ job->base.bo_count < ARRAY_SIZE(args->bo_handles);
+ job->base.bo_count++) {
+ struct drm_gem_object *bo;
+
+ if (!args->bo_handles[job->base.bo_count])
+ break;
+
+ bo = drm_gem_object_lookup(file_priv, args->bo_handles[job->base.bo_count]);
+ if (!bo) {
+ DRM_DEBUG("Failed to look up GEM BO %d: %d\n",
+ job->base.bo_count,
+ args->bo_handles[job->base.bo_count]);
+ ret = -ENOENT;
+ goto fail;
+ }
+ job->base.bo[job->base.bo_count] = bo;
+ }
+
+ ret = v3d_lock_bo_reservations(&job->base, &acquire_ctx);
+ if (ret)
+ goto fail;
+
+ mutex_lock(&v3d->sched_lock);
+ v3d_push_job(&job->base);
+ mutex_unlock(&v3d->sched_lock);
+
+ v3d_attach_fences_and_unlock_reservation(file_priv,
+ &job->base, &acquire_ctx,
+ args->out_sync,
+ &se,
+ job->base.done_fence);
+
+ v3d_job_put(&job->base);
+
+ return 0;
+
+fail:
+ v3d_job_cleanup((void *)job);
+ v3d_put_multisync_post_deps(&se);
+
+ return ret;
+}
+
+/**
+ * v3d_submit_csd_ioctl() - Submits a CSD (compute shader) job to the V3D.
+ * @dev: DRM device
+ * @data: ioctl argument
+ * @file_priv: DRM file for this fd
+ *
+ * Userspace provides the register setup for the CSD, which we don't
+ * need to validate since the CSD is behind the MMU.
+ */
+int
+v3d_submit_csd_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
+{
+ struct v3d_dev *v3d = to_v3d_dev(dev);
+ struct v3d_file_priv *v3d_priv = file_priv->driver_priv;
+ struct drm_v3d_submit_csd *args = data;
+ struct v3d_submit_ext se = {0};
+ struct v3d_csd_job *job = NULL;
+ struct v3d_job *clean_job = NULL;
+ struct ww_acquire_ctx acquire_ctx;
+ int ret;
+
+ trace_v3d_submit_csd_ioctl(&v3d->drm, args->cfg[5], args->cfg[6]);
+
+ if (args->pad)
+ return -EINVAL;
+
+ if (!v3d_has_csd(v3d)) {
+ DRM_DEBUG("Attempting CSD submit on non-CSD hardware\n");
+ return -EINVAL;
+ }
+
+ if (args->flags && !(args->flags & DRM_V3D_SUBMIT_EXTENSION)) {
+ DRM_INFO("invalid flags: %d\n", args->flags);
+ return -EINVAL;
+ }
+
+ if (args->flags & DRM_V3D_SUBMIT_EXTENSION) {
+ ret = v3d_get_extensions(file_priv, args->extensions, &se);
+ if (ret) {
+ DRM_DEBUG("Failed to get extensions.\n");
+ return ret;
+ }
+ }
+
+ ret = v3d_job_init(v3d, file_priv, (void *)&job, sizeof(*job),
+ v3d_job_free, args->in_sync, &se, V3D_CSD);
+ if (ret)
+ goto fail;
+
+ ret = v3d_job_init(v3d, file_priv, (void *)&clean_job, sizeof(*clean_job),
+ v3d_job_free, 0, NULL, V3D_CACHE_CLEAN);
+ if (ret)
+ goto fail;
+
+ job->args = *args;
+
+ ret = v3d_lookup_bos(dev, file_priv, clean_job,
+ args->bo_handles, args->bo_handle_count);
+ if (ret)
+ goto fail;
+
+ ret = v3d_lock_bo_reservations(clean_job, &acquire_ctx);
+ if (ret)
+ goto fail;
+
+ if (args->perfmon_id) {
+ job->base.perfmon = v3d_perfmon_find(v3d_priv,
+ args->perfmon_id);
+ if (!job->base.perfmon) {
+ ret = -ENOENT;
+ goto fail_perfmon;
+ }
+ }
+
+ mutex_lock(&v3d->sched_lock);
+ v3d_push_job(&job->base);
+
+ ret = drm_sched_job_add_dependency(&clean_job->base,
+ dma_fence_get(job->base.done_fence));
+ if (ret)
+ goto fail_unreserve;
+
+ v3d_push_job(clean_job);
+ mutex_unlock(&v3d->sched_lock);
+
+ v3d_attach_fences_and_unlock_reservation(file_priv,
+ clean_job,
+ &acquire_ctx,
+ args->out_sync,
+ &se,
+ clean_job->done_fence);
+
+ v3d_job_put(&job->base);
+ v3d_job_put(clean_job);
+
+ return 0;
+
+fail_unreserve:
+ mutex_unlock(&v3d->sched_lock);
+fail_perfmon:
+ drm_gem_unlock_reservations(clean_job->bo, clean_job->bo_count,
+ &acquire_ctx);
+fail:
+ v3d_job_cleanup((void *)job);
+ v3d_job_cleanup(clean_job);
+ v3d_put_multisync_post_deps(&se);
+
+ return ret;
+}