Merge tag 'drm-misc-next-2022-02-23' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

drm-misc-next for v5.18:

UAPI Changes:

Cross-subsystem Changes:
- Split out panel-lvds and lvds dt bindings .
- Put yes/no on/off disabled/enabled strings in linux/string_helpers.h
  and use it in drivers and tomoyo.
- Clarify dma_fence_chain and dma_fence_array should never include eachother.
- Flatten chains in syncobj's.
- Don't double add in fbdev/defio when page is already enlisted.
- Don't sort deferred-I/O pages by default in fbdev.

Core Changes:
- Fix missing pm_runtime_put_sync in bridge.
- Set modifier support to only linear fb modifier if drivers don't
  advertise support.
- As a result, we remove allow_fb_modifiers.
- Add missing clear for EDID Deep Color Modes in drm_reset_display_info.
- Assorted documentation updates.
- Warn once in drm_clflush if there is no arch support.
- Add missing select for dp helper in drm_panel_edp.
- Assorted small fixes.
- Improve fb-helper's clipping handling.
- Don't dump shmem mmaps in a core dump.
- Add accounting to ttm resource manager, and use it in amdgpu.
- Allow querying the detected eDP panel through debugfs.
- Add helpers for xrgb8888 to 8 and 1 bits gray.
- Improve drm's buddy allocator.
- Add selftests for the buddy allocator.

Driver Changes:
- Add support for nomodeset to a lot of drm drivers.
- Use drm_module_*_driver in a lot of drm drivers.
- Assorted small fixes to bridge/lt9611, v3d, vc4, vmwgfx, mxsfb, nouveau,
  bridge/dw-hdmi, panfrost, lima, ingenic, sprd, bridge/anx7625, ti-sn65dsi86.
- Add bridge/it6505.
- Create DP and DVI-I connectors in ast.
- Assorted nouveau backlight fixes.
- Rework amdgpu reset handling.
- Add dt bindings for ingenic,jz4780-dw-hdmi.
- Support reading edid through aux channel in ingenic.
- Add a drm driver for Solomon SSD130x OLED displays.
- Add simple support for sharp LQ140M1JW46.
- Add more panels to nt35560.

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/686ec871-e77f-c230-22e5-9e3bb80f064a@linux.intel.com

1 files changed, 33 insertions, 3 deletions

diff --git a/drivers/gpu/drm/ttm/ttm_resource.c b/drivers/gpu/drm/ttm/ttm_resource.c
index 29ee2eda7b7d..9a477f0fddee 100644
--- a/drivers/gpu/drm/ttm/ttm_resource.c
+++ b/drivers/gpu/drm/ttm/ttm_resource.c
@@ -41,6 +41,8 @@ void ttm_resource_init(struct ttm_buffer_object *bo,
                        const struct ttm_place *place,
                        struct ttm_resource *res)
 {
+	struct ttm_resource_manager *man;
+
 	res->start = 0;
 	res->num_pages = PFN_UP(bo->base.size);
 	res->mem_type = place->mem_type;
@@ -50,6 +52,11 @@ void ttm_resource_init(struct ttm_buffer_object *bo,
 	res->bus.is_iomem = false;
 	res->bus.caching = ttm_cached;
 	res->bo = bo;
+
+	man = ttm_manager_type(bo->bdev, place->mem_type);
+	spin_lock(&bo->bdev->lru_lock);
+	man->usage += bo->base.size;
+	spin_unlock(&bo->bdev->lru_lock);
 }
 EXPORT_SYMBOL(ttm_resource_init);
 
@@ -65,6 +72,9 @@ EXPORT_SYMBOL(ttm_resource_init);
 void ttm_resource_fini(struct ttm_resource_manager *man,
 		       struct ttm_resource *res)
 {
+	spin_lock(&man->bdev->lru_lock);
+	man->usage -= res->bo->base.size;
+	spin_unlock(&man->bdev->lru_lock);
 }
 EXPORT_SYMBOL(ttm_resource_fini);
 
@@ -153,19 +163,20 @@ void ttm_resource_set_bo(struct ttm_resource *res,
  *
  * @man: memory manager object to init
  * @bdev: ttm device this manager belongs to
- * @p_size: size managed area in pages.
+ * @size: size of managed resources in arbitrary units
  *
  * Initialise core parts of a manager object.
  */
 void ttm_resource_manager_init(struct ttm_resource_manager *man,
 			       struct ttm_device *bdev,
-			       unsigned long p_size)
+			       uint64_t size)
 {
 	unsigned i;
 
 	spin_lock_init(&man->move_lock);
 	man->bdev = bdev;
-	man->size = p_size;
+	man->size = size;
+	man->usage = 0;
 
 	for (i = 0; i < TTM_MAX_BO_PRIORITY; ++i)
 		INIT_LIST_HEAD(&man->lru[i]);
@@ -227,6 +238,24 @@ int ttm_resource_manager_evict_all(struct ttm_device *bdev,
 EXPORT_SYMBOL(ttm_resource_manager_evict_all);
 
 /**
+ * ttm_resource_manager_usage
+ *
+ * @man: A memory manager object.
+ *
+ * Return how many resources are currently used.
+ */
+uint64_t ttm_resource_manager_usage(struct ttm_resource_manager *man)
+{
+	uint64_t usage;
+
+	spin_lock(&man->bdev->lru_lock);
+	usage = man->usage;
+	spin_unlock(&man->bdev->lru_lock);
+	return usage;
+}
+EXPORT_SYMBOL(ttm_resource_manager_usage);
+
+/**
  * ttm_resource_manager_debug
  *
  * @man: manager type to dump.
@@ -238,6 +267,7 @@ void ttm_resource_manager_debug(struct ttm_resource_manager *man,
 	drm_printf(p, "  use_type: %d\n", man->use_type);
 	drm_printf(p, "  use_tt: %d\n", man->use_tt);
 	drm_printf(p, "  size: %llu\n", man->size);
+	drm_printf(p, "  usage: %llu\n", ttm_resource_manager_usage(man));
 	if (man->func->debug)
 		man->func->debug(man, p);
 }