Merge tag 'drm-misc-next-2020-10-27' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

drm-misc-next for 5.11:

UAPI Changes:

  - doc: rules for EBUSY on non-blocking commits; requirements for fourcc
    modifiers; on parsing EDID
  - fbdev/sbuslib: Remove unused FBIOSCURSOR32
  - fourcc: deprecate DRM_FORMAT_MOD_NONE
  - virtio: Support blob resources for memory allocations; Expose host-visible
    and cross-device features

Cross-subsystem Changes:

  - devicetree: Add vendor Prefix for Yes Optoelectronics, Shanghai Top Display
    Optoelectronics
  - dma-buf: Add struct dma_buf_map that stores DMA pointer and I/O-memory flag;
    dma_buf_vmap()/vunmap() return address in dma_buf_map; Use struct_size() macro

Core Changes:

  - atomic: pass full state to CRTC atomic enable/disable; warn for EBUSY during
    non-blocking commits
  - dp: Prepare for DP 2.0 DPCD
  - dp_mst: Receive extended DPCD caps
  - dma-buf: Documentation
  - doc: Format modifiers; dma-buf-map; Cleanups
  - fbdev: Don't use compat_alloc_user_space(); mark as orphaned
  - fb-helper: Take lock in drm_fb_helper_restore_work_fb()
  - gem: Convert implementation and drivers to GEM object functions, remove
    GEM callbacks from struct drm_driver (expect gem_prime_mmap)
  - panel: Cleanups
  - pci: Add legacy infix to drm_irq_by_busid()
  - sched: Avoid infinite waits in drm_sched_entity_destroy()
  - switcheroo: Cleanups
  - ttm: Remove AGP support; Don't modify caching during swapout; Major
    refactoring of the implementation and API that affects all depending
    drivers; Add ttm_bo_wait_ctx(); Add ttm_bo_pin()/unpin() in favor of
    TTM_PL_FLAG_NO_EVICT; Remove ttm_bo_create(); Remove fault_reserve_notify()
    callback; Push move() implementation into drivers; Remove TTM_PAGE_FLAG_WRITE;
    Replace caching flags with init-time cache setting; Push ttm_tt_bind() into
    drivers; Replace move_notify() with delete_mem_notify(); No overlapping memcpy();
    no more ttm_set_populated()
  - vram-helper: Fix BO top-down placement; TTM-related changes; Init GEM
    object functions with defaults; Default placement in system memory; Cleanups

Driver Changes:

  - amdgpu: Use GEM object functions
  - armada: Use GEM object functions
  - aspeed: Configure output via sysfs; Init struct drm_driver with
  - ast: Reload LUT after FB format changes
  - bridge: Add driver and DT bindings for anx7625; Cleanups
  - bridge/dw-hdmi: Constify ops
  - bridge/ti-sn65dsi86: Add retries for link training
  - bridge/lvds-codec: Add support for regulator
  - bridge/tc358768: Restore connector support DRM_GEM_CMA_DRIVEROPS; Cleanups
  - display/ti,j721e-dss: Add DT properies assigned-clocks, assigned-clocks-parent and
    dma-coherent
  - display/ti,am65s-dss: Add DT properies assigned-clocks, assigned-clocks-parent and
    dma-coherent
  - etnaviv: Use GEM object functions
  - exynos: Use GEM object functions
  - fbdev: Cleanups and compiler fixes throughout framebuffer drivers
  - fbdev/cirrusfb: Avoid division by 0
  - gma500: Use GEM object functions; Fix double-free of connector; Cleanups
  - hisilicon/hibmc: I2C-based DDC support; Use to_hibmc_drm_device(); Cleanups
  - i915: Use GEM object functions
  - imx/dcss: Init driver with DRM_GEM_CMA_DRIVER_OPS; Cleanups
  - ingenic: Reset pixel clock when parent clock changes; support reserved
    memory; Alloc F0 and F1 DMA channels at once; Support different pixel formats;
    Revert support for cached mmap buffers
    on F0/F1; support 30-bit/24-bit/8-bit-palette modes
  - komeda: Use DEFINE_SHOW_ATTRIBUTE
  - mcde: Detect platform_get_irq() errors
  - mediatek: Use GEM object functions
  - msm: Use GEM object functions
  - nouveau: Cleanups; TTM-related changes; Use GEM object functions
  - omapdrm: Use GEM object functions
  - panel: Add driver and DT bindings for Novatak nt36672a; Add driver and DT
    bindings for YTC700TLAG-05-201C; Add driver and DT bindings for TDO TL070WSH30;
    Cleanups
  - panel/mantix: Fix reset; Fix deref of NULL pointer in mantix_get_modes()
  - panel/otm8009a: Allow non-continuous dsi clock; Cleanups
  - panel/rm68200: Allow non-continuous dsi clock; Fix mode to 50 FPS
  - panfrost: Fix job timeout handling; Cleanups
  - pl111: Use GEM object functions
  - qxl: Cleanups; TTM-related changes; Pin new BOs with ttm_bo_init_reserved()
  - radeon: Cleanups; TTM-related changes; Use GEM object functions
  - rockchip: Use GEM object functions
  - shmobile: Cleanups
  - tegra: Use GEM object functions
  - tidss: Set drm_plane_helper_funcs.prepare_fb
  - tilcdc: Don't keep vblank interrupt enabled all the time
  - tve200: Detect platform_get_irq() errors
  - vc4: Use GEM object functions; Only register components once DSI is attached;
    Add Maxime as maintainer
  - vgem: Use GEM object functions
  - via: Simplify critical section in via_mem_alloc()
  - virtgpu: Use GEM object functions
  - virtio: Implement blob resources, host-visible and cross-device features;
    Support mapping of host-allocated resources; Use UUID APi; Cleanups
  - vkms: Use GEM object functions; Switch to SHMEM
  - vmwgfx: TTM-related changes; Inline ttm_bo_swapout_all()
  - xen: Use GEM object functions
  - xlnx: Use GEM object functions

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

From: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20201027100936.GA4858@linux-uq9g

1 files changed, 85 insertions, 90 deletions

diff --git a/drivers/gpu/drm/drm_gem_vram_helper.c b/drivers/gpu/drm/drm_gem_vram_helper.c
index 50cad0e4a92e..9da823eb0edd 100644
--- a/drivers/gpu/drm/drm_gem_vram_helper.c
+++ b/drivers/gpu/drm/drm_gem_vram_helper.c
@@ -140,22 +140,19 @@ static void drm_gem_vram_placement(struct drm_gem_vram_object *gbo,
 	unsigned int c = 0;
 
 	if (pl_flag & DRM_GEM_VRAM_PL_FLAG_TOPDOWN)
-		pl_flag = TTM_PL_FLAG_TOPDOWN;
+		invariant_flags = TTM_PL_FLAG_TOPDOWN;
 
 	gbo->placement.placement = gbo->placements;
 	gbo->placement.busy_placement = gbo->placements;
 
 	if (pl_flag & DRM_GEM_VRAM_PL_FLAG_VRAM) {
 		gbo->placements[c].mem_type = TTM_PL_VRAM;
-		gbo->placements[c++].flags = TTM_PL_FLAG_WC |
-					     TTM_PL_FLAG_UNCACHED |
-					     invariant_flags;
+		gbo->placements[c++].flags = invariant_flags;
 	}
 
 	if (pl_flag & DRM_GEM_VRAM_PL_FLAG_SYSTEM || !c) {
 		gbo->placements[c].mem_type = TTM_PL_SYSTEM;
-		gbo->placements[c++].flags = TTM_PL_MASK_CACHING |
-					     invariant_flags;
+		gbo->placements[c++].flags = invariant_flags;
 	}
 
 	gbo->placement.num_placement = c;
@@ -167,58 +164,18 @@ static void drm_gem_vram_placement(struct drm_gem_vram_object *gbo,
 	}
 }
 
-/*
- * Note that on error, drm_gem_vram_init will free the buffer object.
- */
-
-static int drm_gem_vram_init(struct drm_device *dev,
-			     struct drm_gem_vram_object *gbo,
-			     size_t size, unsigned long pg_align)
-{
-	struct drm_vram_mm *vmm = dev->vram_mm;
-	struct ttm_bo_device *bdev;
-	int ret;
-	size_t acc_size;
-
-	if (WARN_ONCE(!vmm, "VRAM MM not initialized")) {
-		kfree(gbo);
-		return -EINVAL;
-	}
-	bdev = &vmm->bdev;
-
-	gbo->bo.base.funcs = &drm_gem_vram_object_funcs;
-
-	ret = drm_gem_object_init(dev, &gbo->bo.base, size);
-	if (ret) {
-		kfree(gbo);
-		return ret;
-	}
-
-	acc_size = ttm_bo_dma_acc_size(bdev, size, sizeof(*gbo));
-
-	gbo->bo.bdev = bdev;
-	drm_gem_vram_placement(gbo, DRM_GEM_VRAM_PL_FLAG_VRAM |
-			       DRM_GEM_VRAM_PL_FLAG_SYSTEM);
-
-	ret = ttm_bo_init(bdev, &gbo->bo, size, ttm_bo_type_device,
-			  &gbo->placement, pg_align, false, acc_size,
-			  NULL, NULL, ttm_buffer_object_destroy);
-	if (ret)
-		/*
-		 * A failing ttm_bo_init will call ttm_buffer_object_destroy
-		 * to release gbo->bo.base and kfree gbo.
-		 */
-		return ret;
-
-	return 0;
-}
-
 /**
  * drm_gem_vram_create() - Creates a VRAM-backed GEM object
  * @dev:		the DRM device
  * @size:		the buffer size in bytes
  * @pg_align:		the buffer's alignment in multiples of the page size
  *
+ * GEM objects are allocated by calling struct drm_driver.gem_create_object,
+ * if set. Otherwise kzalloc() will be used. Drivers can set their own GEM
+ * object functions in struct drm_driver.gem_create_object. If no functions
+ * are set, the new GEM object will use the default functions from GEM VRAM
+ * helpers.
+ *
  * Returns:
  * A new instance of &struct drm_gem_vram_object on success, or
  * an ERR_PTR()-encoded error code otherwise.
@@ -228,11 +185,17 @@ struct drm_gem_vram_object *drm_gem_vram_create(struct drm_device *dev,
 						unsigned long pg_align)
 {
 	struct drm_gem_vram_object *gbo;
+	struct drm_gem_object *gem;
+	struct drm_vram_mm *vmm = dev->vram_mm;
+	struct ttm_bo_device *bdev;
 	int ret;
+	size_t acc_size;
+
+	if (WARN_ONCE(!vmm, "VRAM MM not initialized"))
+		return ERR_PTR(-EINVAL);
 
 	if (dev->driver->gem_create_object) {
-		struct drm_gem_object *gem =
-			dev->driver->gem_create_object(dev, size);
+		gem = dev->driver->gem_create_object(dev, size);
 		if (!gem)
 			return ERR_PTR(-ENOMEM);
 		gbo = drm_gem_vram_of_gem(gem);
@@ -240,10 +203,32 @@ struct drm_gem_vram_object *drm_gem_vram_create(struct drm_device *dev,
 		gbo = kzalloc(sizeof(*gbo), GFP_KERNEL);
 		if (!gbo)
 			return ERR_PTR(-ENOMEM);
+		gem = &gbo->bo.base;
 	}
 
-	ret = drm_gem_vram_init(dev, gbo, size, pg_align);
-	if (ret < 0)
+	if (!gem->funcs)
+		gem->funcs = &drm_gem_vram_object_funcs;
+
+	ret = drm_gem_object_init(dev, gem, size);
+	if (ret) {
+		kfree(gbo);
+		return ERR_PTR(ret);
+	}
+
+	bdev = &vmm->bdev;
+	acc_size = ttm_bo_dma_acc_size(bdev, size, sizeof(*gbo));
+
+	gbo->bo.bdev = bdev;
+	drm_gem_vram_placement(gbo, DRM_GEM_VRAM_PL_FLAG_SYSTEM);
+
+	/*
+	 * A failing ttm_bo_init will call ttm_buffer_object_destroy
+	 * to release gbo->bo.base and kfree gbo.
+	 */
+	ret = ttm_bo_init(bdev, &gbo->bo, size, ttm_bo_type_device,
+			  &gbo->placement, pg_align, false, acc_size,
+			  NULL, NULL, ttm_buffer_object_destroy);
+	if (ret)
 		return ERR_PTR(ret);
 
 	return gbo;
@@ -301,7 +286,7 @@ static u64 drm_gem_vram_pg_offset(struct drm_gem_vram_object *gbo)
  */
 s64 drm_gem_vram_offset(struct drm_gem_vram_object *gbo)
 {
-	if (WARN_ON_ONCE(!gbo->pin_count))
+	if (WARN_ON_ONCE(!gbo->bo.pin_count))
 		return (s64)-ENODEV;
 	return drm_gem_vram_pg_offset(gbo) << PAGE_SHIFT;
 }
@@ -310,24 +295,21 @@ EXPORT_SYMBOL(drm_gem_vram_offset);
 static int drm_gem_vram_pin_locked(struct drm_gem_vram_object *gbo,
 				   unsigned long pl_flag)
 {
-	int i, ret;
 	struct ttm_operation_ctx ctx = { false, false };
+	int ret;
 
-	if (gbo->pin_count)
+	if (gbo->bo.pin_count)
 		goto out;
 
 	if (pl_flag)
 		drm_gem_vram_placement(gbo, pl_flag);
 
-	for (i = 0; i < gbo->placement.num_placement; ++i)
-		gbo->placements[i].flags |= TTM_PL_FLAG_NO_EVICT;
-
 	ret = ttm_bo_validate(&gbo->bo, &gbo->placement, &ctx);
 	if (ret < 0)
 		return ret;
 
 out:
-	++gbo->pin_count;
+	ttm_bo_pin(&gbo->bo);
 
 	return 0;
 }
@@ -369,26 +351,9 @@ int drm_gem_vram_pin(struct drm_gem_vram_object *gbo, unsigned long pl_flag)
 }
 EXPORT_SYMBOL(drm_gem_vram_pin);
 
-static int drm_gem_vram_unpin_locked(struct drm_gem_vram_object *gbo)
+static void drm_gem_vram_unpin_locked(struct drm_gem_vram_object *gbo)
 {
-	int i, ret;
-	struct ttm_operation_ctx ctx = { false, false };
-
-	if (WARN_ON_ONCE(!gbo->pin_count))
-		return 0;
-
-	--gbo->pin_count;
-	if (gbo->pin_count)
-		return 0;
-
-	for (i = 0; i < gbo->placement.num_placement ; ++i)
-		gbo->placements[i].flags &= ~TTM_PL_FLAG_NO_EVICT;
-
-	ret = ttm_bo_validate(&gbo->bo, &gbo->placement, &ctx);
-	if (ret < 0)
-		return ret;
-
-	return 0;
+	ttm_bo_unpin(&gbo->bo);
 }
 
 /**
@@ -406,10 +371,11 @@ int drm_gem_vram_unpin(struct drm_gem_vram_object *gbo)
 	ret = ttm_bo_reserve(&gbo->bo, true, false, NULL);
 	if (ret)
 		return ret;
-	ret = drm_gem_vram_unpin_locked(gbo);
+
+	drm_gem_vram_unpin_locked(gbo);
 	ttm_bo_unreserve(&gbo->bo);
 
-	return ret;
+	return 0;
 }
 EXPORT_SYMBOL(drm_gem_vram_unpin);
 
@@ -619,6 +585,23 @@ static void drm_gem_vram_bo_driver_move_notify(struct drm_gem_vram_object *gbo,
 	kmap->virtual = NULL;
 }
 
+static int drm_gem_vram_bo_driver_move(struct drm_gem_vram_object *gbo,
+				       bool evict,
+				       struct ttm_operation_ctx *ctx,
+				       struct ttm_resource *new_mem)
+{
+	int ret;
+
+	drm_gem_vram_bo_driver_move_notify(gbo, evict, new_mem);
+	ret = ttm_bo_move_memcpy(&gbo->bo, ctx, new_mem);
+	if (ret) {
+		swap(*new_mem, gbo->bo.mem);
+		drm_gem_vram_bo_driver_move_notify(gbo, false, new_mem);
+		swap(*new_mem, gbo->bo.mem);
+	}
+	return ret;
+}
+
 /*
  * Helpers for struct drm_gem_object_funcs
  */
@@ -941,7 +924,7 @@ static struct ttm_tt *bo_driver_ttm_tt_create(struct ttm_buffer_object *bo,
 	if (!tt)
 		return NULL;
 
-	ret = ttm_tt_init(tt, bo, page_flags);
+	ret = ttm_tt_init(tt, bo, page_flags, ttm_cached);
 	if (ret < 0)
 		goto err_ttm_tt_init;
 
@@ -966,9 +949,7 @@ static void bo_driver_evict_flags(struct ttm_buffer_object *bo,
 	drm_gem_vram_bo_driver_evict_flags(gbo, placement);
 }
 
-static void bo_driver_move_notify(struct ttm_buffer_object *bo,
-				  bool evict,
-				  struct ttm_resource *new_mem)
+static void bo_driver_delete_mem_notify(struct ttm_buffer_object *bo)
 {
 	struct drm_gem_vram_object *gbo;
 
@@ -978,7 +959,19 @@ static void bo_driver_move_notify(struct ttm_buffer_object *bo,
 
 	gbo = drm_gem_vram_of_bo(bo);
 
-	drm_gem_vram_bo_driver_move_notify(gbo, evict, new_mem);
+	drm_gem_vram_bo_driver_move_notify(gbo, false, NULL);
+}
+
+static int bo_driver_move(struct ttm_buffer_object *bo,
+			  bool evict,
+			  struct ttm_operation_ctx *ctx,
+			  struct ttm_resource *new_mem)
+{
+	struct drm_gem_vram_object *gbo;
+
+	gbo = drm_gem_vram_of_bo(bo);
+
+	return drm_gem_vram_bo_driver_move(gbo, evict, ctx, new_mem);
 }
 
 static int bo_driver_io_mem_reserve(struct ttm_bo_device *bdev,
@@ -992,6 +985,7 @@ static int bo_driver_io_mem_reserve(struct ttm_bo_device *bdev,
 	case TTM_PL_VRAM:
 		mem->bus.offset = (mem->start << PAGE_SHIFT) + vmm->vram_base;
 		mem->bus.is_iomem = true;
+		mem->bus.caching = ttm_write_combined;
 		break;
 	default:
 		return -EINVAL;
@@ -1005,7 +999,8 @@ static struct ttm_bo_driver bo_driver = {
 	.ttm_tt_destroy = bo_driver_ttm_tt_destroy,
 	.eviction_valuable = ttm_bo_eviction_valuable,
 	.evict_flags = bo_driver_evict_flags,
-	.move_notify = bo_driver_move_notify,
+	.move = bo_driver_move,
+	.delete_mem_notify = bo_driver_delete_mem_notify,
 	.io_mem_reserve = bo_driver_io_mem_reserve,
 };