Merge tag 'drm-next-2022-08-03' of git://anongit.freedesktop.org/drm/drm

Pull drm updates from Dave Airlie:
 "Highlights:

   - New driver for logicvc - which is a display IP core.

   - EDID parser rework to add new extensions

   - fbcon scrolling improvements

   - i915 has some more DG2 work but not enabled by default, but should
     have enough features for userspace to work now.

  Otherwise it's lots of work all over the place. Detailed summary:

  New driver:
   - logicvc

  vfio:
   - use aperture API

  core:
   - of: Add data-lane helpers and convert drivers
   - connector: Remove deprecated ida_simple_get()

  media:
   - Add various RGB666 and RGB888 format constants

  panel:
   - Add HannStar HSD101PWW
   - Add ETML0700Y5DHA

  dma-buf:
   - add sync-file API
   - set dma mask for udmabuf devices

  fbcon:
   - Improve scrolling performance
   - Sanitize input

  fbdev:
   - device unregistering fixes
   - vesa: Support COMPILE_TEST
   - Disable firmware-device registration when first native driver loads

  aperture:
   - fix segfault during hot-unplug
   - export for use with other subsystems

  client:
   - use driver validated modes

  dp:
   - aux: make probing more reliable
   - mst: Read extended DPCD capabilities during system resume
   - Support waiting for HDP signal
   - Port-validation fixes

  edid:
   - CEA data-block iterators
   - struct drm_edid introduction
   - implement HF-EEODB extension

  gem:
   - don't use fb format non-existing planes

  probe-helper:
   - use 640x480 as displayport fallback

  scheduler:
   - don't kill jobs in interrupt context

  bridge:
   - Add support for i.MX8qxp and i.MX8qm
   - lots of fixes/cleanups
   - Add TI-DLPC3433
   - fy07024di26a30d: Optional GPIO reset
   - ldb: Add reg and reg-name properties to bindings, Kconfig fixes
   - lt9611: Fix display sensing;
   - tc358767: DSI/DPI refactoring and DSI-to-eDP support, DSI lane handling
   - tc358775: Fix clock settings
   - ti-sn65dsi83: Allow GPIO to sleep
   - adv7511: I2C fixes
   - anx7625: Fix error handling; DPI fixes; Implement HDP timeout via callback
   - fsl-ldb: Drop DE flip
   - ti-sn65dsi86: Convert to atomic modesetting

  amdgpu:
   - use atomic fence helpers in DM
   - fix VRAM address calculations
   - export CRTC bpc via debugfs
   - Initial devcoredump support
   - Enable high priority gfx queue on asics which support it
   - Adjust GART size on newer APUs for S/G display
   - Soft reset for GFX 11 / SDMA 6
   - Add gfxoff status query for vangogh
   - Fix timestamps for cursor only commits
   - Adjust GART size on newer APUs for S/G display
   - fix buddy memory corruption

  amdkfd:
   - MMU notifier fixes
   - P2P DMA support using dma-buf
   - Add available memory IOCTL
   - HMM profiler support
   - Simplify GPUVM validation
   - Unified memory for CWSR save/restore area

  i915:
   - General driver clean-up
   - DG2 enabling (still under force probe)
       - DG2 small BAR memory support
       - HuC loading support
       - DG2 workarounds
       - DG2/ATS-M device IDs added
   - Ponte Vecchio prep work and new blitter engines
   - add Meteorlake support
   - Fix sparse warnings
   - DMC MMIO range checks
   - Audio related fixes
   - Runtime PM fixes
   - PSR fixes
   - Media freq factor and per-gt enhancements
   - DSI fixes for ICL+
   - Disable DMC flip queue handlers
   - ADL_P voltage swing updates
   - Use more the VBT for panel information
   - Fix on Type-C ports with TBT mode
   - Improve fastset and allow seamless M/N changes
   - Accept more fixed modes with VRR/DMRRS panels
   - Disable connector polling for a headless SKU
   - ADL-S display PLL w/a
   - Enable THP on Icelake and beyond
   - Fix i915_gem_object_ggtt_pin_ww regression on old platforms
   - Expose per tile media freq factor in sysfs
   - Fix dma_resv fence handling in multi-batch execbuf
   - Improve on suspend / resume time with VT-d enabled
   - export CRTC bpc settings via debugfs

  msm:
   - gpu: a619 support
   - gpu: Fix for unclocked GMU register access
   - gpu: Devcore dump enhancements
   - client utilization via fdinfo support
   - fix fence rollover issue
   - gem: Lockdep false-positive warning fix
   - gem: Switch to pfn mappings
   - WB support on sc7180
   - dp: dropped custom bulk clock implementation
   - fix link retraining on resolution change
   - hdmi: dropped obsolete GPIO support

  tegra:
   - context isolation for host1x engines
   - tegra234 soc support

  mediatek:
   - add vdosys0/1 for mt8195
   - add MT8195 dp_intf driver

  exynos:
   - Fix resume function issue of exynos decon driver by calling
     clk_disable_unprepare() properly if clk_prepare_enable() failed.

  nouveau:
   - set of misc fixes/cleanups
   - display cleanups

  gma500:
   - Cleanup connector I2C handling

  hyperv:
   - Unify VRAM allocation of Gen1 and Gen2

  meson:
   - Support YUV422 output; Refcount fixes

  mgag200:
   - Support damage clipping
   - Support gamma handling
   - Protect concurrent HW access
   - Fixes to connector
   - Store model-specific limits in device-info structure
   - fix PCI register init

  panfrost:
   - Valhall support

  r128:
   - Fix bit-shift overflow

  rockchip:
   - Locking fixes in error path

  ssd130x:
   - Fix built-in linkage

  udl:
   - Always advertize VGA connector

  ast:
   - Support multiple outputs
   - fix black screen on resume

  sun4i:
   - HDMI PHY cleanups

  vc4:
   - Add support for BCM2711

  vkms:
   - Allocate output buffer with vmalloc()

  mcde:
   - Fix ref-count leak

  mxsfb/lcdif:
   - Support i.MX8MP LCD controller

  stm/ltdc:
   - Support dynamic Z order
   - Support mirroring

  ingenic:
   - Fix display at maximum resolution"

* tag 'drm-next-2022-08-03' of git://anongit.freedesktop.org/drm/drm: (1480 commits)
  drm/amd/display: Fix a compilation failure on PowerPC caused by FPU code
  drm/amdgpu: enable support for psp 13.0.4 block
  drm/amdgpu: add files for PSP 13.0.4
  drm/amdgpu: add header files for MP 13.0.4
  drm/amdgpu: correct RLC_RLCS_BOOTLOAD_STATUS offset and index
  drm/amdgpu: send msg to IMU for the front-door loading
  drm/amdkfd: use time_is_before_jiffies(a + b) to replace "jiffies - a > b"
  drm/amdgpu: fix hive reference leak when reflecting psp topology info
  drm/amd/pm: enable GFX ULV feature support for SMU13.0.0
  drm/amd/pm: update driver if header for SMU 13.0.0
  drm/amdgpu: move mes self test after drm sched re-started
  drm/amdgpu: drop non-necessary call trace dump
  drm/amdgpu: enable VCN cg and JPEG cg/pg
  drm/amdgpu: vcn_4_0_2 video codec query
  drm/amdgpu: add VCN_4_0_2 firmware support
  drm/amdgpu: add VCN function in NBIO v7.7
  drm/amdgpu: fix a vcn4 boot poll bug in emulation mode
  drm/amd/amdgpu: add memory training support for PSP_V13
  drm/amdkfd: remove an unnecessary amdgpu_bo_ref
  drm/amd/pm: Add get_gfx_off_status interface for yellow carp
  ...

1 files changed, 6 insertions, 113 deletions

diff --git a/drivers/dma-buf/sync_file.c b/drivers/dma-buf/sync_file.c
index 0fe564539166..3ebec19a8e02 100644
--- a/drivers/dma-buf/sync_file.c
+++ b/drivers/dma-buf/sync_file.c
@@ -146,50 +146,6 @@ char *sync_file_get_name(struct sync_file *sync_file, char *buf, int len)
 	return buf;
 }
 
-static int sync_file_set_fence(struct sync_file *sync_file,
-			       struct dma_fence **fences, int num_fences)
-{
-	struct dma_fence_array *array;
-
-	/*
-	 * The reference for the fences in the new sync_file and held
-	 * in add_fence() during the merge procedure, so for num_fences == 1
-	 * we already own a new reference to the fence. For num_fence > 1
-	 * we own the reference of the dma_fence_array creation.
-	 */
-
-	if (num_fences == 0) {
-		sync_file->fence = dma_fence_get_stub();
-		kfree(fences);
-
-	} else if (num_fences == 1) {
-		sync_file->fence = fences[0];
-		kfree(fences);
-
-	} else {
-		array = dma_fence_array_create(num_fences, fences,
-					       dma_fence_context_alloc(1),
-					       1, false);
-		if (!array)
-			return -ENOMEM;
-
-		sync_file->fence = &array->base;
-	}
-
-	return 0;
-}
-
-static void add_fence(struct dma_fence **fences,
-		      int *i, struct dma_fence *fence)
-{
-	fences[*i] = fence;
-
-	if (!dma_fence_is_signaled(fence)) {
-		dma_fence_get(fence);
-		(*i)++;
-	}
-}
-
 /**
  * sync_file_merge() - merge two sync_files
  * @name:	name of new fence
@@ -203,84 +159,21 @@ static void add_fence(struct dma_fence **fences,
 static struct sync_file *sync_file_merge(const char *name, struct sync_file *a,
 					 struct sync_file *b)
 {
-	struct dma_fence *a_fence, *b_fence, **fences;
-	struct dma_fence_unwrap a_iter, b_iter;
-	unsigned int index, num_fences;
 	struct sync_file *sync_file;
+	struct dma_fence *fence;
 
 	sync_file = sync_file_alloc();
 	if (!sync_file)
 		return NULL;
 
-	num_fences = 0;
-	dma_fence_unwrap_for_each(a_fence, &a_iter, a->fence)
-		++num_fences;
-	dma_fence_unwrap_for_each(b_fence, &b_iter, b->fence)
-		++num_fences;
-
-	if (num_fences > INT_MAX)
-		goto err_free_sync_file;
-
-	fences = kcalloc(num_fences, sizeof(*fences), GFP_KERNEL);
-	if (!fences)
-		goto err_free_sync_file;
-
-	/*
-	 * We can't guarantee that fences in both a and b are ordered, but it is
-	 * still quite likely.
-	 *
-	 * So attempt to order the fences as we pass over them and merge fences
-	 * with the same context.
-	 */
-
-	index = 0;
-	for (a_fence = dma_fence_unwrap_first(a->fence, &a_iter),
-	     b_fence = dma_fence_unwrap_first(b->fence, &b_iter);
-	     a_fence || b_fence; ) {
-
-		if (!b_fence) {
-			add_fence(fences, &index, a_fence);
-			a_fence = dma_fence_unwrap_next(&a_iter);
-
-		} else if (!a_fence) {
-			add_fence(fences, &index, b_fence);
-			b_fence = dma_fence_unwrap_next(&b_iter);
-
-		} else if (a_fence->context < b_fence->context) {
-			add_fence(fences, &index, a_fence);
-			a_fence = dma_fence_unwrap_next(&a_iter);
-
-		} else if (b_fence->context < a_fence->context) {
-			add_fence(fences, &index, b_fence);
-			b_fence = dma_fence_unwrap_next(&b_iter);
-
-		} else if (__dma_fence_is_later(a_fence->seqno, b_fence->seqno,
-						a_fence->ops)) {
-			add_fence(fences, &index, a_fence);
-			a_fence = dma_fence_unwrap_next(&a_iter);
-			b_fence = dma_fence_unwrap_next(&b_iter);
-
-		} else {
-			add_fence(fences, &index, b_fence);
-			a_fence = dma_fence_unwrap_next(&a_iter);
-			b_fence = dma_fence_unwrap_next(&b_iter);
-		}
+	fence = dma_fence_unwrap_merge(a->fence, b->fence);
+	if (!fence) {
+		fput(sync_file->file);
+		return NULL;
 	}
-
-	if (sync_file_set_fence(sync_file, fences, index) < 0)
-		goto err_put_fences;
-
+	sync_file->fence = fence;
 	strlcpy(sync_file->user_name, name, sizeof(sync_file->user_name));
 	return sync_file;
-
-err_put_fences:
-	while (index)
-		dma_fence_put(fences[--index]);
-	kfree(fences);
-
-err_free_sync_file:
-	fput(sync_file->file);
-	return NULL;
 }
 
 static int sync_file_release(struct inode *inode, struct file *file)