Merge tag 'drm-misc-next-2020-11-05' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

drm-misc-next for 5.11:

UAPI Changes:

Cross-subsystem Changes:

 - arch/arm64: Describe G12b GPU as coherent
 - iommu: Support coherency for Mali LPAE

Core Changes:

 - atomic: Pass full state to CRTC atomic_{check, begin, flush}(); Use
   atomic-state pointers
 - drm: Remove SCATTER_LIST_MAX_SEGMENT; Cleanups
 - doc: Document legacy_cursor_update better; cleanups
 - edid: Don't warn n EDIDs of zero
 - ttm: New backend allocation pool; Remove old page allocator; Rework
   no_retry handling; Replace flags with booleans in struct ttm_operation_ctx
 - vram-helper: Cleanups

 - fbdev: Cleanups
 - console: Store font size as unsigned value

Driver Changes:

 - ast: Support new display mode
 - amdgpu: Switch to new TTM allocator
 - hisilicon: Cleanups
 - nouveau: Switch to new TTM allocator; Fix include of swiotbl.h and
   limits.h; Use state helper instead of CRTC state pointer
 - panfrost: Support cache-coherent integrations; Fix mutex corruption on
   open/close; Cleanupse
 - qxl: Cleanups
 - radeon: Switch to new TTM allocator
 - ticdc: Fix build failure
 - vmwgfx: Switch to new TTM allocator
 - xlnx: Use dma_request_chan

 - fbdev/sh_mobile: Cleanups

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

From: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20201105101641.GA13099@linux-uq9g

3 files changed, 21 insertions, 41 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
index d50b63a93d37..8466558d0d93 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
@@ -404,8 +404,7 @@ static int amdgpu_cs_bo_validate(struct amdgpu_cs_parser *p,
 	struct ttm_operation_ctx ctx = {
 		.interruptible = true,
 		.no_wait_gpu = false,
-		.resv = bo->tbo.base.resv,
-		.flags = 0
+		.resv = bo->tbo.base.resv
 	};
 	uint32_t domain;
 	int r;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
index 1aa516429c80..e1f64ef8c765 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
@@ -516,9 +516,10 @@ static int amdgpu_bo_do_create(struct amdgpu_device *adev,
 	struct ttm_operation_ctx ctx = {
 		.interruptible = (bp->type != ttm_bo_type_kernel),
 		.no_wait_gpu = bp->no_wait_gpu,
-		.resv = bp->resv,
-		.flags = bp->type != ttm_bo_type_kernel ?
-			TTM_OPT_FLAG_ALLOW_RES_EVICT : 0
+		/* We opt to avoid OOM on system pages allocations */
+		.gfp_retry_mayfail = true,
+		.allow_res_evict = bp->type != ttm_bo_type_kernel,
+		.resv = bp->resv
 	};
 	struct amdgpu_bo *bo;
 	unsigned long page_align, size = bp->size;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index ddb1c8e9eea4..c01c060e4ac5 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -47,7 +47,6 @@
 #include <drm/ttm/ttm_bo_driver.h>
 #include <drm/ttm/ttm_placement.h>
 #include <drm/ttm/ttm_module.h>
-#include <drm/ttm/ttm_page_alloc.h>
 
 #include <drm/drm_debugfs.h>
 #include <drm/amdgpu_drm.h>
@@ -1389,15 +1388,7 @@ static int amdgpu_ttm_tt_populate(struct ttm_bo_device *bdev,
 		return 0;
 	}
 
-#ifdef CONFIG_SWIOTLB
-	if (adev->need_swiotlb && swiotlb_nr_tbl()) {
-		return ttm_dma_populate(&gtt->ttm, adev->dev, ctx);
-	}
-#endif
-
-	/* fall back to generic helper to populate the page array
-	 * and map them to the device */
-	return ttm_populate_and_map_pages(adev->dev, &gtt->ttm, ctx);
+	return ttm_pool_alloc(&adev->mman.bdev.pool, ttm, ctx);
 }
 
 /**
@@ -1406,7 +1397,8 @@ static int amdgpu_ttm_tt_populate(struct ttm_bo_device *bdev,
  * Unmaps pages of a ttm_tt object from the device address space and
  * unpopulates the page array backing it.
  */
-static void amdgpu_ttm_tt_unpopulate(struct ttm_bo_device *bdev, struct ttm_tt *ttm)
+static void amdgpu_ttm_tt_unpopulate(struct ttm_bo_device *bdev,
+				     struct ttm_tt *ttm)
 {
 	struct amdgpu_ttm_tt *gtt = (void *)ttm;
 	struct amdgpu_device *adev;
@@ -1431,16 +1423,7 @@ static void amdgpu_ttm_tt_unpopulate(struct ttm_bo_device *bdev, struct ttm_tt *
 		return;
 
 	adev = amdgpu_ttm_adev(bdev);
-
-#ifdef CONFIG_SWIOTLB
-	if (adev->need_swiotlb && swiotlb_nr_tbl()) {
-		ttm_dma_unpopulate(&gtt->ttm, adev->dev);
-		return;
-	}
-#endif
-
-	/* fall back to generic helper to unmap and unpopulate array */
-	ttm_unmap_and_unpopulate_pages(adev->dev, &gtt->ttm);
+	return ttm_pool_free(&adev->mman.bdev.pool, ttm);
 }
 
 /**
@@ -1920,10 +1903,10 @@ int amdgpu_ttm_init(struct amdgpu_device *adev)
 	mutex_init(&adev->mman.gtt_window_lock);
 
 	/* No others user of address space so set it to 0 */
-	r = ttm_bo_device_init(&adev->mman.bdev,
-			       &amdgpu_bo_driver,
+	r = ttm_bo_device_init(&adev->mman.bdev, &amdgpu_bo_driver, adev->dev,
 			       adev_to_drm(adev)->anon_inode->i_mapping,
 			       adev_to_drm(adev)->vma_offset_manager,
+			       adev->need_swiotlb,
 			       dma_addressing_limited(adev->dev));
 	if (r) {
 		DRM_ERROR("failed initializing buffer object driver(%d).\n", r);
@@ -1931,9 +1914,6 @@ int amdgpu_ttm_init(struct amdgpu_device *adev)
 	}
 	adev->mman.initialized = true;
 
-	/* We opt to avoid OOM on system pages allocations */
-	adev->mman.bdev.no_retry = true;
-
 	/* Initialize VRAM pool with all of VRAM divided into pages */
 	r = amdgpu_vram_mgr_init(adev);
 	if (r) {
@@ -2353,16 +2333,22 @@ static int amdgpu_mm_dump_table(struct seq_file *m, void *data)
 	return 0;
 }
 
+static int amdgpu_ttm_pool_debugfs(struct seq_file *m, void *data)
+{
+	struct drm_info_node *node = (struct drm_info_node *)m->private;
+	struct drm_device *dev = node->minor->dev;
+	struct amdgpu_device *adev = drm_to_adev(dev);
+
+	return ttm_pool_debugfs(&adev->mman.bdev.pool, m);
+}
+
 static const struct drm_info_list amdgpu_ttm_debugfs_list[] = {
 	{"amdgpu_vram_mm", amdgpu_mm_dump_table, 0, (void *)TTM_PL_VRAM},
 	{"amdgpu_gtt_mm", amdgpu_mm_dump_table, 0, (void *)TTM_PL_TT},
 	{"amdgpu_gds_mm", amdgpu_mm_dump_table, 0, (void *)AMDGPU_PL_GDS},
 	{"amdgpu_gws_mm", amdgpu_mm_dump_table, 0, (void *)AMDGPU_PL_GWS},
 	{"amdgpu_oa_mm", amdgpu_mm_dump_table, 0, (void *)AMDGPU_PL_OA},
-	{"ttm_page_pool", ttm_page_alloc_debugfs, 0, NULL},
-#ifdef CONFIG_SWIOTLB
-	{"ttm_dma_page_pool", ttm_dma_page_alloc_debugfs, 0, NULL}
-#endif
+	{"ttm_page_pool", amdgpu_ttm_pool_debugfs, 0, NULL},
 };
 
 /**
@@ -2655,12 +2641,6 @@ int amdgpu_ttm_debugfs_init(struct amdgpu_device *adev)
 	}
 
 	count = ARRAY_SIZE(amdgpu_ttm_debugfs_list);
-
-#ifdef CONFIG_SWIOTLB
-	if (!(adev->need_swiotlb && swiotlb_nr_tbl()))
-		--count;
-#endif
-
 	return amdgpu_debugfs_add_files(adev, amdgpu_ttm_debugfs_list, count);
 #else
 	return 0;