Merge tag 'drm-next-2021-04-28' of git://anongit.freedesktop.org/drm/drm

Pull drm updates from Dave Airlie:
 "The usual lots of work all over the place.

  i915 has gotten some Alderlake work and prelim DG1 code, along with a
  major locking rework over the GEM code, and brings back the property
  of timing out long running jobs using a watchdog. amdgpu has some
  Alderbran support (new GPU), freesync HDMI support along with a lot
  other fixes.

  Outside of the drm, there is a new printf specifier added which should
  have all the correct acks/sobs:

   - printk fourcc modifier support added %p4cc

  Summary:

  core:
   - drm_crtc_commit_wait
   - atomic plane state helpers reworked for full state
   - dma-buf heaps API rework
   - edid: rework and improvements for displayid

  dp-mst:
   - better topology logging

  bridge:
   - Chipone ICN6211
   - Lontium LT8912B
   - anx7625 regulator support

  panel:
   - fix lt9611 4k panels handling

  simple-kms:
   - add plane state helpers

  ttm:
   - debugfs support
   - removal of unused sysfs
   - ignore signaled moved fences
   - ioremap buffer according to mem caching

  i915:
   - Alderlake S enablement
   - Conversion to dma_resv_locking
   - Bring back watchdog timeout support
   - legacy ioctl cleanups
   - add GEM TDDO and RFC process
   - DG1 LMEM preparation work
   - intel_display.c refactoring
   - Gen9/TGL PCH combination support
   - eDP MSO Support
   - multiple PSR instance support
   - Link training debug updates
   - Disable PSR2 support on JSL/EHL
   - DDR5/LPDDR5 support for bw calcs
   - LSPCON limited to gen9/10 platforms
   - HSW/BDW async flip/VTd corruption workaround
   - SAGV watermark fixes
   - SNB hard hang on ring resume fix
   - Limit imported dma-buf size
   - move to use new tasklet API
   - refactor KBL/TGL/ADL-S display/gt steppings
   - refactoring legacy DP/HDMI, FB plane code out

  amdgpu:
   - uapi: add ioctl to query video capabilities
   - Iniital AMD Freesync HDMI support
   - Initial Adebaran support
   - 10bpc dithering improvements
   - DCN secure display support
   - Drop legacy IO BAR requirements
   - PCIE/S0ix/RAS/Prime/Reset fixes
   - Display ASSR support
   - SMU gfx busy queues for RV/PCO
   - Initial LTTPR display work

  amdkfd:
   - MMU notifier fixes
   - APU fixes

  radeon:
   - debugfs cleanps
   - fw error handling ifix
   - Flexible array cleanups

  msm:
   - big DSI phy/pll cleanup
   - sc7280 initial support
   - commong bandwidth scaling path
   - shrinker locking contention fixes
   - unpin/swap support for GEM objcets

  ast:
   - cursor plane handling reworked

  tegra:
   - don't register DP AUX channels before connectors

  zynqmp:
   - fix OOB struct padding memset

  gma500:
   - drop ttm and medfield support

  exynos:
   - request_irq cleanup function

  mediatek:
   - fine tune line time for EOTp
   - MT8192 dpi support
   - atomic crtc config updates
   - don't support HDMI connector creation

  mxsdb:
   - imx8mm support

  panfrost:
   - MMU IRQ handling rework

  qxl:
   - locking fixes
   - resource deallocation changes

  sun4i:
   - add alpha properties to UI/VI layers

  vc4:
   - RPi4 CEC support

  vmwgfx:
   - doc cleanups

  arc:
   - moved to drm/tiny"

* tag 'drm-next-2021-04-28' of git://anongit.freedesktop.org/drm/drm: (1390 commits)
  drm/ttm: Don't count pages in SG BOs against pages_limit
  drm/ttm: fix return value check
  drm/bridge: lt8912b: fix incorrect handling of of_* return values
  drm: bridge: fix LONTIUM use of mipi_dsi_() functions
  drm: bridge: fix ANX7625 use of mipi_dsi_() functions
  drm/amdgpu: page retire over debugfs mechanism
  drm/radeon: Fix a missing check bug in radeon_dp_mst_detect()
  drm/amd/display: Fix the Wunused-function warning
  drm/radeon/r600: Fix variables that are not used after assignment
  drm/amdgpu/smu7: fix CAC setting on TOPAZ
  drm/amd/display: Update DCN302 SR Exit Latency
  drm/amdgpu: enable ras eeprom on aldebaran
  drm/amdgpu: RAS harvest on driver load
  drm/amdgpu: add ras aldebaran ras eeprom driver
  drm/amd/pm: increase time out value when sending msg to SMU
  drm/amdgpu: add DMUB outbox event IRQ source define/complete/debug flag
  drm/amd/pm: add the callback to get vbios bootup values for vangogh
  drm/radeon: Fix size overflow
  drm/amdgpu: Fix size overflow
  drm/amdgpu: move mmhub ras_func init to ip specific file
  ...

1 files changed, 96 insertions, 9 deletions

diff --git a/drivers/gpu/drm/i915/gt/intel_region_lmem.c b/drivers/gpu/drm/i915/gt/intel_region_lmem.c
index 60393ce5614d..be6f2c8f5184 100644
--- a/drivers/gpu/drm/i915/gt/intel_region_lmem.c
+++ b/drivers/gpu/drm/i915/gt/intel_region_lmem.c
@@ -26,12 +26,12 @@ static int init_fake_lmem_bar(struct intel_memory_region *mem)
 	if (ret)
 		return ret;
 
-	mem->remap_addr = dma_map_resource(&i915->drm.pdev->dev,
+	mem->remap_addr = dma_map_resource(i915->drm.dev,
 					   mem->region.start,
 					   mem->fake_mappable.size,
 					   PCI_DMA_BIDIRECTIONAL,
 					   DMA_ATTR_FORCE_CONTIGUOUS);
-	if (dma_mapping_error(&i915->drm.pdev->dev, mem->remap_addr)) {
+	if (dma_mapping_error(i915->drm.dev, mem->remap_addr)) {
 		drm_mm_remove_node(&mem->fake_mappable);
 		return -EINVAL;
 	}
@@ -56,7 +56,7 @@ static void release_fake_lmem_bar(struct intel_memory_region *mem)
 
 	drm_mm_remove_node(&mem->fake_mappable);
 
-	dma_unmap_resource(&mem->i915->drm.pdev->dev,
+	dma_unmap_resource(mem->i915->drm.dev,
 			   mem->remap_addr,
 			   mem->fake_mappable.size,
 			   PCI_DMA_BIDIRECTIONAL,
@@ -90,8 +90,6 @@ region_lmem_init(struct intel_memory_region *mem)
 	if (ret)
 		io_mapping_fini(&mem->iomap);
 
-	intel_memory_region_set_name(mem, "local");
-
 	return ret;
 }
 
@@ -102,20 +100,26 @@ static const struct intel_memory_region_ops intel_region_lmem_ops = {
 };
 
 struct intel_memory_region *
-intel_setup_fake_lmem(struct drm_i915_private *i915)
+intel_gt_setup_fake_lmem(struct intel_gt *gt)
 {
-	struct pci_dev *pdev = i915->drm.pdev;
+	struct drm_i915_private *i915 = gt->i915;
+	struct pci_dev *pdev = to_pci_dev(i915->drm.dev);
 	struct intel_memory_region *mem;
 	resource_size_t mappable_end;
 	resource_size_t io_start;
 	resource_size_t start;
 
+	if (!HAS_LMEM(i915))
+		return ERR_PTR(-ENODEV);
+
+	if (!i915->params.fake_lmem_start)
+		return ERR_PTR(-ENODEV);
+
 	GEM_BUG_ON(i915_ggtt_has_aperture(&i915->ggtt));
-	GEM_BUG_ON(!i915->params.fake_lmem_start);
 
 	/* Your mappable aperture belongs to me now! */
 	mappable_end = pci_resource_len(pdev, 2);
-	io_start = pci_resource_start(pdev, 2),
+	io_start = pci_resource_start(pdev, 2);
 	start = i915->params.fake_lmem_start;
 
 	mem = intel_memory_region_create(i915,
@@ -136,3 +140,86 @@ intel_setup_fake_lmem(struct drm_i915_private *i915)
 
 	return mem;
 }
+
+static bool get_legacy_lowmem_region(struct intel_uncore *uncore,
+				     u64 *start, u32 *size)
+{
+	if (!IS_DG1_REVID(uncore->i915, DG1_REVID_A0, DG1_REVID_B0))
+		return false;
+
+	*start = 0;
+	*size = SZ_1M;
+
+	drm_dbg(&uncore->i915->drm, "LMEM: reserved legacy low-memory [0x%llx-0x%llx]\n",
+		*start, *start + *size);
+
+	return true;
+}
+
+static int reserve_lowmem_region(struct intel_uncore *uncore,
+				 struct intel_memory_region *mem)
+{
+	u64 reserve_start;
+	u32 reserve_size;
+	int ret;
+
+	if (!get_legacy_lowmem_region(uncore, &reserve_start, &reserve_size))
+		return 0;
+
+	ret = intel_memory_region_reserve(mem, reserve_start, reserve_size);
+	if (ret)
+		drm_err(&uncore->i915->drm, "LMEM: reserving low memory region failed\n");
+
+	return ret;
+}
+
+static struct intel_memory_region *setup_lmem(struct intel_gt *gt)
+{
+	struct drm_i915_private *i915 = gt->i915;
+	struct intel_uncore *uncore = gt->uncore;
+	struct pci_dev *pdev = i915->drm.pdev;
+	struct intel_memory_region *mem;
+	resource_size_t io_start;
+	resource_size_t lmem_size;
+	int err;
+
+	if (!IS_DGFX(i915))
+		return ERR_PTR(-ENODEV);
+
+	/* Stolen starts from GSMBASE on DG1 */
+	lmem_size = intel_uncore_read64(uncore, GEN12_GSMBASE);
+
+	io_start = pci_resource_start(pdev, 2);
+	if (GEM_WARN_ON(lmem_size > pci_resource_len(pdev, 2)))
+		return ERR_PTR(-ENODEV);
+
+	mem = intel_memory_region_create(i915,
+					 0,
+					 lmem_size,
+					 I915_GTT_PAGE_SIZE_4K,
+					 io_start,
+					 &intel_region_lmem_ops);
+	if (IS_ERR(mem))
+		return mem;
+
+	err = reserve_lowmem_region(uncore, mem);
+	if (err)
+		goto err_region_put;
+
+	drm_dbg(&i915->drm, "Local memory: %pR\n", &mem->region);
+	drm_dbg(&i915->drm, "Local memory IO start: %pa\n",
+		&mem->io_start);
+	drm_info(&i915->drm, "Local memory available: %pa\n",
+		 &lmem_size);
+
+	return mem;
+
+err_region_put:
+	intel_memory_region_put(mem);
+	return ERR_PTR(err);
+}
+
+struct intel_memory_region *intel_gt_setup_lmem(struct intel_gt *gt)
+{
+	return setup_lmem(gt);
+}