Merge tag 'drm-misc-next-fixes-2024-05-16' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-next
drm-misc-next-fixes for v6.10-rc1:
- VM_BIND fix for nouveau.
- Lots of panthor fixes:
* Fixes for panthor's heap logical block.
* Reset on unrecoverable fault
* Fix VM references.
* Reset fix.
- xlnx compile and doc fixes.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/54d2c8b9-8b04-45fc-b483-200ffac9d344@linux.intel.com
diff --git a/drivers/gpu/drm/nouveau/nouveau_abi16.c b/drivers/gpu/drm/nouveau/nouveau_abi16.c
index f465fe9..d569090 100644
--- a/drivers/gpu/drm/nouveau/nouveau_abi16.c
+++ b/drivers/gpu/drm/nouveau/nouveau_abi16.c
@@ -272,6 +272,9 @@ nouveau_abi16_ioctl_getparam(ABI16_IOCTL_ARGS)
getparam->value = (u64)ttm_resource_manager_usage(vram_mgr);
break;
}
+ case NOUVEAU_GETPARAM_HAS_VMA_TILEMODE:
+ getparam->value = 1;
+ break;
default:
NV_PRINTK(dbg, cli, "unknown parameter %lld\n", getparam->param);
return -EINVAL;
diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c
index 1e2d28f..70fb003 100644
--- a/drivers/gpu/drm/nouveau/nouveau_bo.c
+++ b/drivers/gpu/drm/nouveau/nouveau_bo.c
@@ -241,28 +241,28 @@ nouveau_bo_alloc(struct nouveau_cli *cli, u64 *size, int *align, u32 domain,
}
nvbo->contig = !(tile_flags & NOUVEAU_GEM_TILE_NONCONTIG);
- if (!nouveau_cli_uvmm(cli) || internal) {
- /* for BO noVM allocs, don't assign kinds */
- if (cli->device.info.family >= NV_DEVICE_INFO_V0_FERMI) {
- nvbo->kind = (tile_flags & 0x0000ff00) >> 8;
- if (!nvif_mmu_kind_valid(mmu, nvbo->kind)) {
- kfree(nvbo);
- return ERR_PTR(-EINVAL);
- }
- nvbo->comp = mmu->kind[nvbo->kind] != nvbo->kind;
- } else if (cli->device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
- nvbo->kind = (tile_flags & 0x00007f00) >> 8;
- nvbo->comp = (tile_flags & 0x00030000) >> 16;
- if (!nvif_mmu_kind_valid(mmu, nvbo->kind)) {
- kfree(nvbo);
- return ERR_PTR(-EINVAL);
- }
- } else {
- nvbo->zeta = (tile_flags & 0x00000007);
+ if (cli->device.info.family >= NV_DEVICE_INFO_V0_FERMI) {
+ nvbo->kind = (tile_flags & 0x0000ff00) >> 8;
+ if (!nvif_mmu_kind_valid(mmu, nvbo->kind)) {
+ kfree(nvbo);
+ return ERR_PTR(-EINVAL);
}
- nvbo->mode = tile_mode;
+ nvbo->comp = mmu->kind[nvbo->kind] != nvbo->kind;
+ } else if (cli->device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
+ nvbo->kind = (tile_flags & 0x00007f00) >> 8;
+ nvbo->comp = (tile_flags & 0x00030000) >> 16;
+ if (!nvif_mmu_kind_valid(mmu, nvbo->kind)) {
+ kfree(nvbo);
+ return ERR_PTR(-EINVAL);
+ }
+ } else {
+ nvbo->zeta = (tile_flags & 0x00000007);
+ }
+ nvbo->mode = tile_mode;
+
+ if (!nouveau_cli_uvmm(cli) || internal) {
/* Determine the desirable target GPU page size for the buffer. */
for (i = 0; i < vmm->page_nr; i++) {
/* Because we cannot currently allow VMM maps to fail
@@ -304,12 +304,6 @@ nouveau_bo_alloc(struct nouveau_cli *cli, u64 *size, int *align, u32 domain,
}
nvbo->page = vmm->page[pi].shift;
} else {
- /* reject other tile flags when in VM mode. */
- if (tile_mode)
- return ERR_PTR(-EINVAL);
- if (tile_flags & ~NOUVEAU_GEM_TILE_NONCONTIG)
- return ERR_PTR(-EINVAL);
-
/* Determine the desirable target GPU page size for the buffer. */
for (i = 0; i < vmm->page_nr; i++) {
/* Because we cannot currently allow VMM maps to fail
diff --git a/drivers/gpu/drm/panthor/panthor_device.c b/drivers/gpu/drm/panthor/panthor_device.c
index 75276cb..4082c8f 100644
--- a/drivers/gpu/drm/panthor/panthor_device.c
+++ b/drivers/gpu/drm/panthor/panthor_device.c
@@ -129,13 +129,8 @@ static void panthor_device_reset_work(struct work_struct *work)
panthor_gpu_l2_power_on(ptdev);
panthor_mmu_post_reset(ptdev);
ret = panthor_fw_post_reset(ptdev);
- if (ret)
- goto out_dev_exit;
-
atomic_set(&ptdev->reset.pending, 0);
- panthor_sched_post_reset(ptdev);
-
-out_dev_exit:
+ panthor_sched_post_reset(ptdev, ret != 0);
drm_dev_exit(cookie);
if (ret) {
@@ -293,6 +288,7 @@ static const struct panthor_exception_info panthor_exception_infos[] = {
PANTHOR_EXCEPTION(ACTIVE),
PANTHOR_EXCEPTION(CS_RES_TERM),
PANTHOR_EXCEPTION(CS_CONFIG_FAULT),
+ PANTHOR_EXCEPTION(CS_UNRECOVERABLE),
PANTHOR_EXCEPTION(CS_ENDPOINT_FAULT),
PANTHOR_EXCEPTION(CS_BUS_FAULT),
PANTHOR_EXCEPTION(CS_INSTR_INVALID),
diff --git a/drivers/gpu/drm/panthor/panthor_device.h b/drivers/gpu/drm/panthor/panthor_device.h
index 2fdd671..e388c04 100644
--- a/drivers/gpu/drm/panthor/panthor_device.h
+++ b/drivers/gpu/drm/panthor/panthor_device.h
@@ -216,6 +216,7 @@ enum drm_panthor_exception_type {
DRM_PANTHOR_EXCEPTION_CS_RES_TERM = 0x0f,
DRM_PANTHOR_EXCEPTION_MAX_NON_FAULT = 0x3f,
DRM_PANTHOR_EXCEPTION_CS_CONFIG_FAULT = 0x40,
+ DRM_PANTHOR_EXCEPTION_CS_UNRECOVERABLE = 0x41,
DRM_PANTHOR_EXCEPTION_CS_ENDPOINT_FAULT = 0x44,
DRM_PANTHOR_EXCEPTION_CS_BUS_FAULT = 0x48,
DRM_PANTHOR_EXCEPTION_CS_INSTR_INVALID = 0x49,
diff --git a/drivers/gpu/drm/panthor/panthor_fw.c b/drivers/gpu/drm/panthor/panthor_fw.c
index fedf962..857f3f1 100644
--- a/drivers/gpu/drm/panthor/panthor_fw.c
+++ b/drivers/gpu/drm/panthor/panthor_fw.c
@@ -453,7 +453,7 @@ panthor_fw_alloc_queue_iface_mem(struct panthor_device *ptdev,
ret = panthor_kernel_bo_vmap(mem);
if (ret) {
- panthor_kernel_bo_destroy(panthor_fw_vm(ptdev), mem);
+ panthor_kernel_bo_destroy(mem);
return ERR_PTR(ret);
}
@@ -1134,7 +1134,7 @@ void panthor_fw_unplug(struct panthor_device *ptdev)
panthor_fw_stop(ptdev);
list_for_each_entry(section, &ptdev->fw->sections, node)
- panthor_kernel_bo_destroy(panthor_fw_vm(ptdev), section->mem);
+ panthor_kernel_bo_destroy(section->mem);
/* We intentionally don't call panthor_vm_idle() and let
* panthor_mmu_unplug() release the AS we acquired with
@@ -1142,6 +1142,7 @@ void panthor_fw_unplug(struct panthor_device *ptdev)
* state to keep the active_refcnt balanced.
*/
panthor_vm_put(ptdev->fw->vm);
+ ptdev->fw->vm = NULL;
panthor_gpu_power_off(ptdev, L2, ptdev->gpu_info.l2_present, 20000);
}
diff --git a/drivers/gpu/drm/panthor/panthor_gem.c b/drivers/gpu/drm/panthor/panthor_gem.c
index d648326..38f56086 100644
--- a/drivers/gpu/drm/panthor/panthor_gem.c
+++ b/drivers/gpu/drm/panthor/panthor_gem.c
@@ -26,18 +26,18 @@ static void panthor_gem_free_object(struct drm_gem_object *obj)
/**
* panthor_kernel_bo_destroy() - Destroy a kernel buffer object
- * @vm: The VM this BO was mapped to.
* @bo: Kernel buffer object to destroy. If NULL or an ERR_PTR(), the destruction
* is skipped.
*/
-void panthor_kernel_bo_destroy(struct panthor_vm *vm,
- struct panthor_kernel_bo *bo)
+void panthor_kernel_bo_destroy(struct panthor_kernel_bo *bo)
{
+ struct panthor_vm *vm;
int ret;
if (IS_ERR_OR_NULL(bo))
return;
+ vm = bo->vm;
panthor_kernel_bo_vunmap(bo);
if (drm_WARN_ON(bo->obj->dev,
@@ -53,6 +53,7 @@ void panthor_kernel_bo_destroy(struct panthor_vm *vm,
drm_gem_object_put(bo->obj);
out_free_bo:
+ panthor_vm_put(vm);
kfree(bo);
}
@@ -106,6 +107,7 @@ panthor_kernel_bo_create(struct panthor_device *ptdev, struct panthor_vm *vm,
if (ret)
goto err_free_va;
+ kbo->vm = panthor_vm_get(vm);
bo->exclusive_vm_root_gem = panthor_vm_root_gem(vm);
drm_gem_object_get(bo->exclusive_vm_root_gem);
bo->base.base.resv = bo->exclusive_vm_root_gem->resv;
diff --git a/drivers/gpu/drm/panthor/panthor_gem.h b/drivers/gpu/drm/panthor/panthor_gem.h
index 3bccba39..e43021c 100644
--- a/drivers/gpu/drm/panthor/panthor_gem.h
+++ b/drivers/gpu/drm/panthor/panthor_gem.h
@@ -62,6 +62,11 @@ struct panthor_kernel_bo {
struct drm_gem_object *obj;
/**
+ * @vm: VM this private buffer is attached to.
+ */
+ struct panthor_vm *vm;
+
+ /**
* @va_node: VA space allocated to this GEM.
*/
struct drm_mm_node va_node;
@@ -136,7 +141,6 @@ panthor_kernel_bo_create(struct panthor_device *ptdev, struct panthor_vm *vm,
size_t size, u32 bo_flags, u32 vm_map_flags,
u64 gpu_va);
-void panthor_kernel_bo_destroy(struct panthor_vm *vm,
- struct panthor_kernel_bo *bo);
+void panthor_kernel_bo_destroy(struct panthor_kernel_bo *bo);
#endif /* __PANTHOR_GEM_H__ */
diff --git a/drivers/gpu/drm/panthor/panthor_heap.c b/drivers/gpu/drm/panthor/panthor_heap.c
index 143fa35..3796a9e 100644
--- a/drivers/gpu/drm/panthor/panthor_heap.c
+++ b/drivers/gpu/drm/panthor/panthor_heap.c
@@ -127,7 +127,7 @@ static void panthor_free_heap_chunk(struct panthor_vm *vm,
heap->chunk_count--;
mutex_unlock(&heap->lock);
- panthor_kernel_bo_destroy(vm, chunk->bo);
+ panthor_kernel_bo_destroy(chunk->bo);
kfree(chunk);
}
@@ -183,7 +183,7 @@ static int panthor_alloc_heap_chunk(struct panthor_device *ptdev,
return 0;
err_destroy_bo:
- panthor_kernel_bo_destroy(vm, chunk->bo);
+ panthor_kernel_bo_destroy(chunk->bo);
err_free_chunk:
kfree(chunk);
@@ -253,8 +253,8 @@ int panthor_heap_destroy(struct panthor_heap_pool *pool, u32 handle)
* @pool: Pool to instantiate the heap context from.
* @initial_chunk_count: Number of chunk allocated at initialization time.
* Must be at least 1.
- * @chunk_size: The size of each chunk. Must be a power of two between 256k
- * and 2M.
+ * @chunk_size: The size of each chunk. Must be page-aligned and lie in the
+ * [128k:8M] range.
* @max_chunks: Maximum number of chunks that can be allocated.
* @target_in_flight: Maximum number of in-flight render passes.
* @heap_ctx_gpu_va: Pointer holding the GPU address of the allocated heap
@@ -281,8 +281,11 @@ int panthor_heap_create(struct panthor_heap_pool *pool,
if (initial_chunk_count == 0)
return -EINVAL;
- if (hweight32(chunk_size) != 1 ||
- chunk_size < SZ_256K || chunk_size > SZ_2M)
+ if (initial_chunk_count > max_chunks)
+ return -EINVAL;
+
+ if (!IS_ALIGNED(chunk_size, PAGE_SIZE) ||
+ chunk_size < SZ_128K || chunk_size > SZ_8M)
return -EINVAL;
down_read(&pool->lock);
@@ -320,7 +323,8 @@ int panthor_heap_create(struct panthor_heap_pool *pool,
if (!pool->vm) {
ret = -EINVAL;
} else {
- ret = xa_alloc(&pool->xa, &id, heap, XA_LIMIT(1, MAX_HEAPS_PER_POOL), GFP_KERNEL);
+ ret = xa_alloc(&pool->xa, &id, heap,
+ XA_LIMIT(0, MAX_HEAPS_PER_POOL - 1), GFP_KERNEL);
if (!ret) {
void *gpu_ctx = panthor_get_heap_ctx(pool, id);
@@ -391,7 +395,7 @@ int panthor_heap_return_chunk(struct panthor_heap_pool *pool,
mutex_unlock(&heap->lock);
if (removed) {
- panthor_kernel_bo_destroy(pool->vm, chunk->bo);
+ panthor_kernel_bo_destroy(chunk->bo);
kfree(chunk);
ret = 0;
} else {
@@ -410,6 +414,13 @@ int panthor_heap_return_chunk(struct panthor_heap_pool *pool,
* @renderpasses_in_flight: Number of render passes currently in-flight.
* @pending_frag_count: Number of fragment jobs waiting for execution/completion.
* @new_chunk_gpu_va: Pointer used to return the chunk VA.
+ *
+ * Return:
+ * - 0 if a new heap was allocated
+ * - -ENOMEM if the tiler context reached the maximum number of chunks
+ * or if too many render passes are in-flight
+ * or if the allocation failed
+ * - -EINVAL if any of the arguments passed to panthor_heap_grow() is invalid
*/
int panthor_heap_grow(struct panthor_heap_pool *pool,
u64 heap_gpu_va,
@@ -439,10 +450,7 @@ int panthor_heap_grow(struct panthor_heap_pool *pool,
* handler provided by the userspace driver, if any).
*/
if (renderpasses_in_flight > heap->target_in_flight ||
- (pending_frag_count > 0 && heap->chunk_count >= heap->max_chunks)) {
- ret = -EBUSY;
- goto out_unlock;
- } else if (heap->chunk_count >= heap->max_chunks) {
+ heap->chunk_count >= heap->max_chunks) {
ret = -ENOMEM;
goto out_unlock;
}
@@ -536,7 +544,7 @@ panthor_heap_pool_create(struct panthor_device *ptdev, struct panthor_vm *vm)
pool->vm = vm;
pool->ptdev = ptdev;
init_rwsem(&pool->lock);
- xa_init_flags(&pool->xa, XA_FLAGS_ALLOC1);
+ xa_init_flags(&pool->xa, XA_FLAGS_ALLOC);
kref_init(&pool->refcount);
pool->gpu_contexts = panthor_kernel_bo_create(ptdev, vm, bosize,
@@ -587,7 +595,7 @@ void panthor_heap_pool_destroy(struct panthor_heap_pool *pool)
drm_WARN_ON(&pool->ptdev->base, panthor_heap_destroy_locked(pool, i));
if (!IS_ERR_OR_NULL(pool->gpu_contexts))
- panthor_kernel_bo_destroy(pool->vm, pool->gpu_contexts);
+ panthor_kernel_bo_destroy(pool->gpu_contexts);
/* Reflects the fact the pool has been destroyed. */
pool->vm = NULL;
diff --git a/drivers/gpu/drm/panthor/panthor_sched.c b/drivers/gpu/drm/panthor/panthor_sched.c
index 7f16a4a..79ffcbc 100644
--- a/drivers/gpu/drm/panthor/panthor_sched.c
+++ b/drivers/gpu/drm/panthor/panthor_sched.c
@@ -826,8 +826,8 @@ static void group_free_queue(struct panthor_group *group, struct panthor_queue *
panthor_queue_put_syncwait_obj(queue);
- panthor_kernel_bo_destroy(group->vm, queue->ringbuf);
- panthor_kernel_bo_destroy(panthor_fw_vm(group->ptdev), queue->iface.mem);
+ panthor_kernel_bo_destroy(queue->ringbuf);
+ panthor_kernel_bo_destroy(queue->iface.mem);
kfree(queue);
}
@@ -837,15 +837,14 @@ static void group_release_work(struct work_struct *work)
struct panthor_group *group = container_of(work,
struct panthor_group,
release_work);
- struct panthor_device *ptdev = group->ptdev;
u32 i;
for (i = 0; i < group->queue_count; i++)
group_free_queue(group, group->queues[i]);
- panthor_kernel_bo_destroy(panthor_fw_vm(ptdev), group->suspend_buf);
- panthor_kernel_bo_destroy(panthor_fw_vm(ptdev), group->protm_suspend_buf);
- panthor_kernel_bo_destroy(group->vm, group->syncobjs);
+ panthor_kernel_bo_destroy(group->suspend_buf);
+ panthor_kernel_bo_destroy(group->protm_suspend_buf);
+ panthor_kernel_bo_destroy(group->syncobjs);
panthor_vm_put(group->vm);
kfree(group);
@@ -1281,7 +1280,16 @@ cs_slot_process_fatal_event_locked(struct panthor_device *ptdev,
if (group)
group->fatal_queues |= BIT(cs_id);
- sched_queue_delayed_work(sched, tick, 0);
+ if (CS_EXCEPTION_TYPE(fatal) == DRM_PANTHOR_EXCEPTION_CS_UNRECOVERABLE) {
+ /* If this exception is unrecoverable, queue a reset, and make
+ * sure we stop scheduling groups until the reset has happened.
+ */
+ panthor_device_schedule_reset(ptdev);
+ cancel_delayed_work(&sched->tick_work);
+ } else {
+ sched_queue_delayed_work(sched, tick, 0);
+ }
+
drm_warn(&ptdev->base,
"CSG slot %d CS slot: %d\n"
"CS_FATAL.EXCEPTION_TYPE: 0x%x (%s)\n"
@@ -1385,7 +1393,12 @@ static int group_process_tiler_oom(struct panthor_group *group, u32 cs_id)
pending_frag_count, &new_chunk_va);
}
- if (ret && ret != -EBUSY) {
+ /* If the heap context doesn't have memory for us, we want to let the
+ * FW try to reclaim memory by waiting for fragment jobs to land or by
+ * executing the tiler OOM exception handler, which is supposed to
+ * implement incremental rendering.
+ */
+ if (ret && ret != -ENOMEM) {
drm_warn(&ptdev->base, "Failed to extend the tiler heap\n");
group->fatal_queues |= BIT(cs_id);
sched_queue_delayed_work(sched, tick, 0);
@@ -2720,15 +2733,22 @@ void panthor_sched_pre_reset(struct panthor_device *ptdev)
mutex_unlock(&sched->reset.lock);
}
-void panthor_sched_post_reset(struct panthor_device *ptdev)
+void panthor_sched_post_reset(struct panthor_device *ptdev, bool reset_failed)
{
struct panthor_scheduler *sched = ptdev->scheduler;
struct panthor_group *group, *group_tmp;
mutex_lock(&sched->reset.lock);
- list_for_each_entry_safe(group, group_tmp, &sched->reset.stopped_groups, run_node)
+ list_for_each_entry_safe(group, group_tmp, &sched->reset.stopped_groups, run_node) {
+ /* Consider all previously running group as terminated if the
+ * reset failed.
+ */
+ if (reset_failed)
+ group->state = PANTHOR_CS_GROUP_TERMINATED;
+
panthor_group_start(group);
+ }
/* We're done resetting the GPU, clear the reset.in_progress bit so we can
* kick the scheduler.
@@ -2736,9 +2756,11 @@ void panthor_sched_post_reset(struct panthor_device *ptdev)
atomic_set(&sched->reset.in_progress, false);
mutex_unlock(&sched->reset.lock);
- sched_queue_delayed_work(sched, tick, 0);
-
- sched_queue_work(sched, sync_upd);
+ /* No need to queue a tick and update syncs if the reset failed. */
+ if (!reset_failed) {
+ sched_queue_delayed_work(sched, tick, 0);
+ sched_queue_work(sched, sync_upd);
+ }
}
static void group_sync_upd_work(struct work_struct *work)
diff --git a/drivers/gpu/drm/panthor/panthor_sched.h b/drivers/gpu/drm/panthor/panthor_sched.h
index 66438b1..3a30d23 100644
--- a/drivers/gpu/drm/panthor/panthor_sched.h
+++ b/drivers/gpu/drm/panthor/panthor_sched.h
@@ -40,7 +40,7 @@ void panthor_group_pool_destroy(struct panthor_file *pfile);
int panthor_sched_init(struct panthor_device *ptdev);
void panthor_sched_unplug(struct panthor_device *ptdev);
void panthor_sched_pre_reset(struct panthor_device *ptdev);
-void panthor_sched_post_reset(struct panthor_device *ptdev);
+void panthor_sched_post_reset(struct panthor_device *ptdev, bool reset_failed);
void panthor_sched_suspend(struct panthor_device *ptdev);
void panthor_sched_resume(struct panthor_device *ptdev);
diff --git a/drivers/gpu/drm/xlnx/zynqmp_disp.c b/drivers/gpu/drm/xlnx/zynqmp_disp.c
index 13157da..c9fb432 100644
--- a/drivers/gpu/drm/xlnx/zynqmp_disp.c
+++ b/drivers/gpu/drm/xlnx/zynqmp_disp.c
@@ -940,7 +940,7 @@ zynqmp_disp_layer_find_format(struct zynqmp_disp_layer *layer,
* zynqmp_disp_layer_find_live_format - Find format information for given
* media bus format
* @layer: The layer
- * @drm_fmt: Media bus format to search
+ * @media_bus_format: Media bus format to search
*
* Search display subsystem format information corresponding to the given media
* bus format @media_bus_format for the @layer, and return a pointer to the
@@ -981,7 +981,7 @@ u32 *zynqmp_disp_layer_drm_formats(struct zynqmp_disp_layer *layer,
unsigned int i;
u32 *formats;
- if (WARN_ON(!layer->mode == ZYNQMP_DPSUB_LAYER_NONLIVE)) {
+ if (WARN_ON(layer->mode != ZYNQMP_DPSUB_LAYER_NONLIVE)) {
*num_formats = 0;
return NULL;
}
@@ -1117,7 +1117,7 @@ void zynqmp_disp_layer_set_format(struct zynqmp_disp_layer *layer,
/**
* zynqmp_disp_layer_set_live_format - Set the live video layer format
* @layer: The layer
- * @info: The format info
+ * @media_bus_format: Media bus format to set
*
* NOTE: This function should not be used to set format for non-live video
* layer. Use zynqmp_disp_layer_set_format() instead.
diff --git a/include/uapi/drm/nouveau_drm.h b/include/uapi/drm/nouveau_drm.h
index 8ad8d1c..dd87f8f 100644
--- a/include/uapi/drm/nouveau_drm.h
+++ b/include/uapi/drm/nouveau_drm.h
@@ -68,6 +68,13 @@ extern "C" {
*/
#define NOUVEAU_GETPARAM_VRAM_USED 19
+/*
+ * NOUVEAU_GETPARAM_HAS_VMA_TILEMODE
+ *
+ * Query whether tile mode and PTE kind are accepted with VM allocs or not.
+ */
+#define NOUVEAU_GETPARAM_HAS_VMA_TILEMODE 20
+
struct drm_nouveau_getparam {
__u64 param;
__u64 value;
diff --git a/include/uapi/drm/panthor_drm.h b/include/uapi/drm/panthor_drm.h
index dadb05a..aaed8e1 100644
--- a/include/uapi/drm/panthor_drm.h
+++ b/include/uapi/drm/panthor_drm.h
@@ -895,13 +895,21 @@ struct drm_panthor_tiler_heap_create {
/** @vm_id: VM ID the tiler heap should be mapped to */
__u32 vm_id;
- /** @initial_chunk_count: Initial number of chunks to allocate. */
+ /** @initial_chunk_count: Initial number of chunks to allocate. Must be at least one. */
__u32 initial_chunk_count;
- /** @chunk_size: Chunk size. Must be a power of two at least 256KB large. */
+ /**
+ * @chunk_size: Chunk size.
+ *
+ * Must be page-aligned and lie in the [128k:8M] range.
+ */
__u32 chunk_size;
- /** @max_chunks: Maximum number of chunks that can be allocated. */
+ /**
+ * @max_chunks: Maximum number of chunks that can be allocated.
+ *
+ * Must be at least @initial_chunk_count.
+ */
__u32 max_chunks;
/**
@@ -931,7 +939,11 @@ struct drm_panthor_tiler_heap_create {
* struct drm_panthor_tiler_heap_destroy - Arguments passed to DRM_IOCTL_PANTHOR_TILER_HEAP_DESTROY
*/
struct drm_panthor_tiler_heap_destroy {
- /** @handle: Handle of the tiler heap to destroy */
+ /**
+ * @handle: Handle of the tiler heap to destroy.
+ *
+ * Must be a valid heap handle returned by DRM_IOCTL_PANTHOR_TILER_HEAP_CREATE.
+ */
__u32 handle;
/** @pad: Padding field, MBZ. */
