Some missing commits for Panthor

drivers/gpu/drm/drm_client.c

@@ -256,7 +256,7 @@ static void drm_client_buffer_delete(struct drm_client_buffer *buffer)
 {
 	struct drm_device *dev = buffer->client->dev;
 
-	drm_gem_vunmap(buffer->gem, &buffer->map);
+	drm_gem_vunmap_locked(buffer->gem, &buffer->map);
 
 	if (buffer->gem)
 		drm_gem_object_put(buffer->gem);
@@ -344,7 +344,7 @@ drm_client_buffer_vmap(struct drm_client_buffer *buffer,
 	 * fd_install step out of the driver backend hooks, to make that
 	 * final step optional for internal users.
 	 */
-	ret = drm_gem_vmap_unlocked(buffer->gem, map);
+	ret = drm_gem_vmap(buffer->gem, map);
 	if (ret)
 		return ret;
 
@@ -366,7 +366,7 @@ void drm_client_buffer_vunmap(struct drm_client_buffer *buffer)
 {
 	struct iosys_map *map = &buffer->map;
 
-	drm_gem_vunmap_unlocked(buffer->gem, map);
+	drm_gem_vunmap(buffer->gem, map);
 }
 EXPORT_SYMBOL(drm_client_buffer_vunmap);
 

drivers/gpu/drm/drm_gem.c

@@ -1170,7 +1170,7 @@ void drm_gem_unpin(struct drm_gem_object *obj)
 		obj->funcs->unpin(obj);
 }
 
-int drm_gem_vmap(struct drm_gem_object *obj, struct iosys_map *map)
+int drm_gem_vmap_locked(struct drm_gem_object *obj, struct iosys_map *map)
 {
 	int ret;
 
@@ -1187,9 +1187,9 @@ int drm_gem_vmap(struct drm_gem_object *obj, struct iosys_map *map)
 
 	return 0;
 }
-EXPORT_SYMBOL(drm_gem_vmap);
+EXPORT_SYMBOL(drm_gem_vmap_locked);
 
-void drm_gem_vunmap(struct drm_gem_object *obj, struct iosys_map *map)
+void drm_gem_vunmap_locked(struct drm_gem_object *obj, struct iosys_map *map)
 {
 	dma_resv_assert_held(obj->resv);
 
@@ -1202,27 +1202,27 @@ void drm_gem_vunmap(struct drm_gem_object *obj, struct iosys_map *map)
 	/* Always set the mapping to NULL. Callers may rely on this. */
 	iosys_map_clear(map);
 }
-EXPORT_SYMBOL(drm_gem_vunmap);
+EXPORT_SYMBOL(drm_gem_vunmap_locked);
 
-int drm_gem_vmap_unlocked(struct drm_gem_object *obj, struct iosys_map *map)
+int drm_gem_vmap(struct drm_gem_object *obj, struct iosys_map *map)
 {
 	int ret;
 
 	dma_resv_lock(obj->resv, NULL);
-	ret = drm_gem_vmap(obj, map);
+	ret = drm_gem_vmap_locked(obj, map);
 	dma_resv_unlock(obj->resv);
 
 	return ret;
 }
-EXPORT_SYMBOL(drm_gem_vmap_unlocked);
+EXPORT_SYMBOL(drm_gem_vmap);
 
-void drm_gem_vunmap_unlocked(struct drm_gem_object *obj, struct iosys_map *map)
+void drm_gem_vunmap(struct drm_gem_object *obj, struct iosys_map *map)
 {
 	dma_resv_lock(obj->resv, NULL);
-	drm_gem_vunmap(obj, map);
+	drm_gem_vunmap_locked(obj, map);
 	dma_resv_unlock(obj->resv);
 }
-EXPORT_SYMBOL(drm_gem_vunmap_unlocked);
+EXPORT_SYMBOL(drm_gem_vunmap);
 
 /**
  * drm_gem_lock_reservations - Sets up the ww context and acquires

drivers/gpu/drm/drm_gem_framebuffer_helper.c

@@ -354,7 +354,7 @@ int drm_gem_fb_vmap(struct drm_framebuffer *fb, struct iosys_map *map,
 			ret = -EINVAL;
 			goto err_drm_gem_vunmap;
 		}
-		ret = drm_gem_vmap_unlocked(obj, &map[i]);
+		ret = drm_gem_vmap(obj, &map[i]);
 		if (ret)
 			goto err_drm_gem_vunmap;
 	}
@@ -376,7 +376,7 @@ int drm_gem_fb_vmap(struct drm_framebuffer *fb, struct iosys_map *map,
 		obj = drm_gem_fb_get_obj(fb, i);
 		if (!obj)
 			continue;
-		drm_gem_vunmap_unlocked(obj, &map[i]);
+		drm_gem_vunmap(obj, &map[i]);
 	}
 	return ret;
 }
@@ -403,7 +403,7 @@ void drm_gem_fb_vunmap(struct drm_framebuffer *fb, struct iosys_map *map)
 			continue;
 		if (iosys_map_is_null(&map[i]))
 			continue;
-		drm_gem_vunmap_unlocked(obj, &map[i]);
+		drm_gem_vunmap(obj, &map[i]);
 	}
 }
 EXPORT_SYMBOL(drm_gem_fb_vunmap);

drivers/gpu/drm/drm_internal.h

@@ -175,8 +175,8 @@ void drm_gem_print_info(struct drm_printer *p, unsigned int indent,
 
 int drm_gem_pin(struct drm_gem_object *obj);
 void drm_gem_unpin(struct drm_gem_object *obj);
-int drm_gem_vmap(struct drm_gem_object *obj, struct iosys_map *map);
-void drm_gem_vunmap(struct drm_gem_object *obj, struct iosys_map *map);
+int drm_gem_vmap_locked(struct drm_gem_object *obj, struct iosys_map *map);
+void drm_gem_vunmap_locked(struct drm_gem_object *obj, struct iosys_map *map);
 
 int drm_gem_dumb_destroy(struct drm_file *file, struct drm_device *dev,
 			 u32 handle);

drivers/gpu/drm/drm_prime.c

@@ -680,7 +680,7 @@ int drm_gem_dmabuf_vmap(struct dma_buf *dma_buf, struct iosys_map *map)
 {
 	struct drm_gem_object *obj = dma_buf->priv;
 
-	return drm_gem_vmap(obj, map);
+	return drm_gem_vmap_locked(obj, map);
 }
 EXPORT_SYMBOL(drm_gem_dmabuf_vmap);
 
@@ -696,7 +696,7 @@ void drm_gem_dmabuf_vunmap(struct dma_buf *dma_buf, struct iosys_map *map)
 {
 	struct drm_gem_object *obj = dma_buf->priv;
 
-	drm_gem_vunmap(obj, map);
+	drm_gem_vunmap_locked(obj, map);
 }
 EXPORT_SYMBOL(drm_gem_dmabuf_vunmap);
 

drivers/gpu/drm/lima/lima_sched.c

@@ -373,15 +373,15 @@ static void lima_sched_build_error_task_list(struct lima_sched_task *task)
 		} else {
 			buffer_chunk->size = lima_bo_size(bo);
 
-			ret = drm_gem_vmap_unlocked(&bo->base.base, &map);
+			ret = drm_gem_vmap(&bo->base.base, &map);
 			if (ret) {
 				kvfree(et);
 				goto out;
 			}
 
 			memcpy(buffer_chunk + 1, map.vaddr, buffer_chunk->size);
 
-			drm_gem_vunmap_unlocked(&bo->base.base, &map);
+			drm_gem_vunmap(&bo->base.base, &map);
 		}
 
 		buffer_chunk = (void *)(buffer_chunk + 1) + buffer_chunk->size;

drivers/gpu/drm/panfrost/panfrost_dump.c

@@ -209,7 +209,7 @@ void panfrost_core_dump(struct panfrost_job *job)
 			goto dump_header;
 		}
 
-		ret = drm_gem_vmap_unlocked(&bo->base.base, &map);
+		ret = drm_gem_vmap(&bo->base.base, &map);
 		if (ret) {
 			dev_err(pfdev->dev, "Panfrost Dump: couldn't map Buffer Object\n");
 			iter.hdr->bomap.valid = 0;
@@ -236,7 +236,7 @@ void panfrost_core_dump(struct panfrost_job *job)
 		vaddr = map.vaddr;
 		memcpy(iter.data, vaddr, bo->base.base.size);
 
-		drm_gem_vunmap_unlocked(&bo->base.base, &map);
+		drm_gem_vunmap(&bo->base.base, &map);
 
 		iter.hdr->bomap.valid = 1;
 

drivers/gpu/drm/panfrost/panfrost_perfcnt.c

@@ -106,7 +106,7 @@ static int panfrost_perfcnt_enable_locked(struct panfrost_device *pfdev,
 		goto err_close_bo;
 	}
 
-	ret = drm_gem_vmap_unlocked(&bo->base, &map);
+	ret = drm_gem_vmap(&bo->base, &map);
 	if (ret)
 		goto err_put_mapping;
 	perfcnt->buf = map.vaddr;
@@ -165,7 +165,7 @@ static int panfrost_perfcnt_enable_locked(struct panfrost_device *pfdev,
 	return 0;
 
 err_vunmap:
-	drm_gem_vunmap_unlocked(&bo->base, &map);
+	drm_gem_vunmap(&bo->base, &map);
 err_put_mapping:
 	panfrost_gem_mapping_put(perfcnt->mapping);
 err_close_bo:
@@ -195,7 +195,7 @@ static int panfrost_perfcnt_disable_locked(struct panfrost_device *pfdev,
 		  GPU_PERFCNT_CFG_MODE(GPU_PERFCNT_CFG_MODE_OFF));
 
 	perfcnt->user = NULL;
-	drm_gem_vunmap_unlocked(&perfcnt->mapping->obj->base.base, &map);
+	drm_gem_vunmap(&perfcnt->mapping->obj->base.base, &map);
 	perfcnt->buf = NULL;
 	panfrost_gem_close(&perfcnt->mapping->obj->base.base, file_priv);
 	panfrost_mmu_as_put(pfdev, perfcnt->mapping->mmu);

drivers/gpu/drm/panthor/panthor_device.c

@@ -177,10 +177,6 @@ int panthor_device_init(struct panthor_device *ptdev)
 	struct page *p;
 	int ret;
 
-	ret = panthor_gpu_coherency_init(ptdev);
-	if (ret)
-		return ret;
-
 	init_completion(&ptdev->unplug.done);
 	ret = drmm_mutex_init(&ptdev->base, &ptdev->unplug.lock);
 	if (ret)
@@ -245,7 +241,7 @@ int panthor_device_init(struct panthor_device *ptdev)
 
 	ret = pm_runtime_resume_and_get(ptdev->base.dev);
 	if (ret)
-		goto err_unplug_gpu;
+		return ret;
 
 	/* If PM is disabled, we need to call panthor_device_resume() manually. */
 	if (!IS_ENABLED(CONFIG_PM)) {
@@ -258,6 +254,10 @@ int panthor_device_init(struct panthor_device *ptdev)
 	if (ret)
 		goto err_rpm_put;
 
+	ret = panthor_gpu_coherency_init(ptdev);
+	if (ret)
+		goto err_unplug_gpu;
+
 	ret = panthor_mmu_init(ptdev);
 	if (ret)
 		goto err_unplug_gpu;

drivers/gpu/drm/panthor/panthor_device.h

@@ -415,8 +415,6 @@ static irqreturn_t panthor_ ## __name ## _irq_threaded_handler(int irq, void *da
 		if (!status)									\
 			break;									\
 												\
-		gpu_write(ptdev, __reg_prefix ## _INT_CLEAR, status);				\
-												\
 		__handler(ptdev, status);							\
 		ret = IRQ_HANDLED;								\
 	}											\

drivers/gpu/drm/panthor/panthor_fw.c

@@ -1010,6 +1010,8 @@ static void panthor_fw_init_global_iface(struct panthor_device *ptdev)
 
 static void panthor_job_irq_handler(struct panthor_device *ptdev, u32 status)
 {
+	gpu_write(ptdev, JOB_INT_CLEAR, status);
+
 	if (!ptdev->fw->booted && (status & JOB_INT_GLOBAL_IF))
 		ptdev->fw->booted = true;
 

drivers/gpu/drm/panthor/panthor_gem.h

@@ -180,7 +180,7 @@ panthor_kernel_bo_vmap(struct panthor_kernel_bo *bo)
 	if (bo->kmap)
 		return 0;
 
-	ret = drm_gem_vmap_unlocked(bo->obj, &map);
+	ret = drm_gem_vmap(bo->obj, &map);
 	if (ret)
 		return ret;
 
@@ -194,7 +194,7 @@ panthor_kernel_bo_vunmap(struct panthor_kernel_bo *bo)
 	if (bo->kmap) {
 		struct iosys_map map = IOSYS_MAP_INIT_VADDR(bo->kmap);
 
-		drm_gem_vunmap_unlocked(bo->obj, &map);
+		drm_gem_vunmap(bo->obj, &map);
 		bo->kmap = NULL;
 	}
 }

drivers/gpu/drm/panthor/panthor_gpu.c

@@ -145,6 +145,8 @@ static void panthor_gpu_init_info(struct panthor_device *ptdev)
 
 static void panthor_gpu_irq_handler(struct panthor_device *ptdev, u32 status)
 {
+	gpu_write(ptdev, GPU_INT_CLEAR, status);
+
 	if (status & GPU_IRQ_FAULT) {
 		u32 fault_status = gpu_read(ptdev, GPU_FAULT_STATUS);
 		u64 address = gpu_read64(ptdev, GPU_FAULT_ADDR);

drivers/gpu/drm/panthor/panthor_mmu.c

@@ -769,6 +769,7 @@ int panthor_vm_active(struct panthor_vm *vm)
 	if (ptdev->mmu->as.faulty_mask & panthor_mmu_as_fault_mask(ptdev, as)) {
 		gpu_write(ptdev, MMU_INT_CLEAR, panthor_mmu_as_fault_mask(ptdev, as));
 		ptdev->mmu->as.faulty_mask &= ~panthor_mmu_as_fault_mask(ptdev, as);
+		ptdev->mmu->irq.mask |= panthor_mmu_as_fault_mask(ptdev, as);
 		gpu_write(ptdev, MMU_INT_MASK, ~ptdev->mmu->as.faulty_mask);
 	}
 
@@ -1685,11 +1686,17 @@ static void panthor_mmu_irq_handler(struct panthor_device *ptdev, u32 status)
 			access_type, access_type_name(ptdev, fault_status),
 			source_id);
 
+		/* We don't handle VM faults at the moment, so let's just clear the
+		 * interrupt and let the writer/reader crash.
+		 * Note that COMPLETED irqs are never cleared, but this is fine
+		 * because they are always masked.
+		 */
+		gpu_write(ptdev, MMU_INT_CLEAR, mask);
+
 		/* Ignore MMU interrupts on this AS until it's been
 		 * re-enabled.
 		 */
 		ptdev->mmu->irq.mask = new_int_mask;
-		gpu_write(ptdev, MMU_INT_MASK, new_int_mask);
 
 		if (ptdev->mmu->as.slots[as].vm)
 			ptdev->mmu->as.slots[as].vm->unhandled_fault = true;

drivers/gpu/drm/panthor/panthor_regs.h

@@ -111,8 +111,8 @@
 #define GPU_COHERENCY_PROT_BIT(name)			BIT(GPU_COHERENCY_  ## name)
 
 #define GPU_COHERENCY_PROTOCOL				0x304
-#define   GPU_COHERENCY_ACE				0
-#define   GPU_COHERENCY_ACE_LITE			1
+#define   GPU_COHERENCY_ACE_LITE			0
+#define   GPU_COHERENCY_ACE				1
 #define   GPU_COHERENCY_NONE				31
 
 #define MCU_CONTROL					0x700

drivers/gpu/drm/panthor/panthor_sched.c

@@ -840,7 +840,7 @@ panthor_queue_put_syncwait_obj(struct panthor_queue *queue)
 	if (queue->syncwait.kmap) {
 		struct iosys_map map = IOSYS_MAP_INIT_VADDR(queue->syncwait.kmap);
 
-		drm_gem_vunmap_unlocked(queue->syncwait.obj, &map);
+		drm_gem_vunmap(queue->syncwait.obj, &map);
 		queue->syncwait.kmap = NULL;
 	}
 
@@ -866,7 +866,7 @@ panthor_queue_get_syncwait_obj(struct panthor_group *group, struct panthor_queue
 		goto err_put_syncwait_obj;
 
 	queue->syncwait.obj = &bo->base.base;
-	ret = drm_gem_vmap_unlocked(queue->syncwait.obj, &map);
+	ret = drm_gem_vmap(queue->syncwait.obj, &map);
 	if (drm_WARN_ON(&ptdev->base, ret))
 		goto err_put_syncwait_obj;
 

include/drm/drm_gem.h

@@ -511,8 +511,8 @@ struct page **drm_gem_get_pages(struct drm_gem_object *obj);
 void drm_gem_put_pages(struct drm_gem_object *obj, struct page **pages,
 		bool dirty, bool accessed);
 
-int drm_gem_vmap_unlocked(struct drm_gem_object *obj, struct iosys_map *map);
-void drm_gem_vunmap_unlocked(struct drm_gem_object *obj, struct iosys_map *map);
+int drm_gem_vmap(struct drm_gem_object *obj, struct iosys_map *map);
+void drm_gem_vunmap(struct drm_gem_object *obj, struct iosys_map *map);
 
 int drm_gem_objects_lookup(struct drm_file *filp, void __user *bo_handles,
 			   int count, struct drm_gem_object ***objs_out);