From b6c765d693a0833b94cb2e91b32842570c3458d2 Mon Sep 17 00:00:00 2001
From: vboxsync <vboxsync@cfe28804-0f27-0410-a406-dd0f0b0b656f>
Date: Tue, 15 Dec 2020 22:29:56 +0000
Subject: [PATCH] Additions/linux/drm: Adjustment for Linux 5.10.

Upstream-Status: Backport

git-svn-id: http://www.virtualbox.org/svn/vbox@87092 cfe28804-0f27-0410-a406-dd0f0b0b656f

Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>

---
 src/VBox/Additions/linux/drm/vbox_drv.h | 10 +-
 src/VBox/Additions/linux/drm/vbox_fb.c  |  2 +-
 .../src/VBox/Additions/linux/drm/vbox_mode.c  |  2 +-
 src/VBox/Additions/linux/drm/vbox_ttm.c | 99 +++++++++++++++++--
 4 files changed, 99 insertions(+), 14 deletions(-)

diff --git a/src/VBox/Additions/linux/drm/vbox_drv.h b/src/VBox/Additions/linux/drm/vbox_drv.h
index 8c85371749..7937f2f2d2 100644
--- a/src/VBox/Additions/linux/drm/vbox_drv.h
+++ b/src/VBox/Additions/linux/drm/vbox_drv.h
@@ -175,6 +175,9 @@
 #include <drm/ttm/ttm_placement.h>
 #include <drm/ttm/ttm_memory.h>
 #include <drm/ttm/ttm_module.h>
+#if RTLNX_VER_MIN(5,10,0)
+# include <drm/ttm/ttm_resource.h>
+#endif
 
 #include "vboxvideo_guest.h"
 #include "vboxvideo_vbe.h"
@@ -444,7 +447,10 @@ int vbox_bo_create(struct drm_device *dev, int size, int align,
 int vbox_gem_create(struct drm_device *dev,
 		    u32 size, bool iskernel, struct drm_gem_object **obj);
 
-int vbox_bo_pin(struct vbox_bo *bo, u32 pl_flag, u64 *gpu_addr);
+#define VBOX_MEM_TYPE_VRAM   0x1
+#define VBOX_MEM_TYPE_SYSTEM 0x2
+
+int vbox_bo_pin(struct vbox_bo *bo, u32 mem_type, u64 *gpu_addr);
 int vbox_bo_unpin(struct vbox_bo *bo);
 
 static inline int vbox_bo_reserve(struct vbox_bo *bo, bool no_wait)
@@ -469,7 +475,7 @@ static inline void vbox_bo_unreserve(struct vbox_bo *bo)
 	ttm_bo_unreserve(&bo->bo);
 }
 
-void vbox_ttm_placement(struct vbox_bo *bo, int domain);
+void vbox_ttm_placement(struct vbox_bo *bo, u32 mem_type);
 int vbox_bo_push_sysram(struct vbox_bo *bo);
 int vbox_mmap(struct file *filp, struct vm_area_struct *vma);
 
diff --git a/src/VBox/Additions/linux/drm/vbox_fb.c b/src/VBox/Additions/linux/drm/vbox_fb.c
index adead98d3d..7182d9da1a 100644
--- a/src/VBox/Additions/linux/drm/vbox_fb.c
+++ b/src/VBox/Additions/linux/drm/vbox_fb.c
@@ -295,7 +295,7 @@ static int vboxfb_create(struct drm_fb_helper *helper,
 	if (ret)
 		return ret;
 
-	ret = vbox_bo_pin(bo, TTM_PL_FLAG_VRAM, NULL);
+	ret = vbox_bo_pin(bo, VBOX_MEM_TYPE_VRAM, NULL);
 	if (ret) {
 		vbox_bo_unreserve(bo);
 		return ret;
diff --git a/src/VBox/Additions/linux/drm/vbox_mode.c b/src/VBox/Additions/linux/drm/vbox_mode.c
index ce7d135cb6..5557db5ef8 100644
--- a/src/VBox/Additions/linux/drm/vbox_mode.c
+++ b/src/VBox/Additions/linux/drm/vbox_mode.c
@@ -227,7 +227,7 @@ static int vbox_crtc_set_base(struct drm_crtc *crtc,
 	if (ret)
 		return ret;
 
-	ret = vbox_bo_pin(bo, TTM_PL_FLAG_VRAM, &gpu_addr);
+	ret = vbox_bo_pin(bo, VBOX_MEM_TYPE_VRAM, &gpu_addr);
 	vbox_bo_unreserve(bo);
 	if (ret)
 		return ret;
diff --git a/src/VBox/Additions/linux/drm/vbox_ttm.c b/src/VBox/Additions/linux/drm/vbox_ttm.c
index bf87aabc05..5eac926a42 100644
--- a/src/VBox/Additions/linux/drm/vbox_ttm.c
+++ b/src/VBox/Additions/linux/drm/vbox_ttm.c
@@ -41,6 +41,7 @@
 #define PLACEMENT_FLAGS(placement) ((placement).flags)
 #endif
 
+
 static inline struct vbox_private *vbox_bdev(struct ttm_bo_device *bd)
 {
 	return container_of(bd, struct vbox_private, ttm.bdev);
@@ -125,6 +126,7 @@ static bool vbox_ttm_bo_is_vbox_bo(struct ttm_buffer_object *bo)
 	return false;
 }
 
+#if RTLNX_VER_MAX(5,10,0)
 static int
 vbox_bo_init_mem_type(struct ttm_bo_device *bdev, u32 type,
 		      struct ttm_mem_type_manager *man)
@@ -148,6 +150,7 @@ vbox_bo_init_mem_type(struct ttm_bo_device *bdev, u32 type,
 
 	return 0;
 }
+#endif
 
 static void
 vbox_bo_evict_flags(struct ttm_buffer_object *bo, struct ttm_placement *pl)
@@ -157,7 +160,7 @@ vbox_bo_evict_flags(struct ttm_buffer_object *bo, struct ttm_placement *pl)
 	if (!vbox_ttm_bo_is_vbox_bo(bo))
 		return;
 
-	vbox_ttm_placement(vboxbo, TTM_PL_FLAG_SYSTEM);
+	vbox_ttm_placement(vboxbo, VBOX_MEM_TYPE_SYSTEM);
 	*pl = vboxbo->placement;
 }
 
@@ -167,11 +170,12 @@ static int vbox_bo_verify_access(struct ttm_buffer_object *bo,
 	return 0;
 }
 
+#if RTLNX_VER_MAX(5,10,0)
 static int vbox_ttm_io_mem_reserve(struct ttm_bo_device *bdev,
 				   struct ttm_mem_reg *mem)
 {
-	struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type];
 	struct vbox_private *vbox = vbox_bdev(bdev);
+	struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type];
 
 	mem->bus.addr = NULL;
 	mem->bus.offset = 0;
@@ -194,12 +198,53 @@ static int vbox_ttm_io_mem_reserve(struct ttm_bo_device *bdev,
 	}
 	return 0;
 }
+#else
+static int vbox_ttm_io_mem_reserve(struct ttm_bo_device *bdev,
+				   struct ttm_resource *mem)
+{
+	struct vbox_private *vbox = vbox_bdev(bdev);
+	mem->bus.addr = NULL;
+	mem->bus.offset = 0;
+	mem->size = mem->num_pages << PAGE_SHIFT;
+	mem->start = 0;
+	mem->bus.is_iomem = false;
+	switch (mem->mem_type) {
+	case TTM_PL_SYSTEM:
+		/* system memory */
+		return 0;
+	case TTM_PL_VRAM:
+		mem->bus.offset = mem->start << PAGE_SHIFT;
+		mem->start = pci_resource_start(vbox->dev->pdev, 0);
+		mem->bus.is_iomem = true;
+		break;
+	default:
+		return -EINVAL;
+	}
+	return 0;
+}
+#endif
 
+
+
+#if RTLNX_VER_MIN(5,10,0)
+static void vbox_ttm_io_mem_free(struct ttm_bo_device *bdev,
+				 struct ttm_resource *mem)
+{
+}
+#else
 static void vbox_ttm_io_mem_free(struct ttm_bo_device *bdev,
 				 struct ttm_mem_reg *mem)
 {
 }
+#endif
 
+#if RTLNX_VER_MIN(5,10,0)
+static void vbox_ttm_tt_destroy(struct ttm_bo_device *bdev, struct ttm_tt *tt)
+{
+	ttm_tt_fini(tt);
+	kfree(tt);
+}
+#else
 static void vbox_ttm_backend_destroy(struct ttm_tt *tt)
 {
 	ttm_tt_fini(tt);
@@ -209,6 +254,7 @@ static void vbox_ttm_backend_destroy(struct ttm_tt *tt)
 static struct ttm_backend_func vbox_tt_backend_func = {
 	.destroy = &vbox_ttm_backend_destroy,
 };
+#endif
 
 #if RTLNX_VER_MAX(4,17,0) && !RTLNX_RHEL_MAJ_PREREQ(7,6) && !RTLNX_SUSE_MAJ_PREREQ(15,1) && !RTLNX_SUSE_MAJ_PREREQ(12,5)
 static struct ttm_tt *vbox_ttm_tt_create(struct ttm_bo_device *bdev,
@@ -226,7 +272,9 @@ static struct ttm_tt *vbox_ttm_tt_create(struct ttm_buffer_object *bo,
 	if (!tt)
 		return NULL;
 
+#if RTLNX_VER_MAX(5,10,0)
 	tt->func = &vbox_tt_backend_func;
+#endif
 #if RTLNX_VER_MAX(4,17,0) && !RTLNX_RHEL_MAJ_PREREQ(7,6) && !RTLNX_SUSE_MAJ_PREREQ(15,1) && !RTLNX_SUSE_MAJ_PREREQ(12,5)
 	if (ttm_tt_init(tt, bdev, size, page_flags, dummy_read_page)) {
 #else
@@ -261,11 +309,16 @@ static void vbox_ttm_tt_unpopulate(struct ttm_tt *ttm)
 
 static struct ttm_bo_driver vbox_bo_driver = {
 	.ttm_tt_create = vbox_ttm_tt_create,
+#if RTLNX_VER_MIN(5,10,0)
+	.ttm_tt_destroy = vbox_ttm_tt_destroy,
+#endif
 #if RTLNX_VER_MAX(4,17,0)
 	.ttm_tt_populate = vbox_ttm_tt_populate,
 	.ttm_tt_unpopulate = vbox_ttm_tt_unpopulate,
 #endif
+#if RTLNX_VER_MAX(5,10,0)
 	.init_mem_type = vbox_bo_init_mem_type,
+#endif
 #if RTLNX_VER_MIN(4,10,0) || RTLNX_RHEL_MAJ_PREREQ(7,4)
 	.eviction_valuable = ttm_bo_eviction_valuable,
 #endif
@@ -318,8 +371,13 @@ int vbox_mm_init(struct vbox_private *vbox)
 #endif
 	}
 
+#if RTLNX_VER_MIN(5,10,0)
+	ret = ttm_range_man_init(bdev, TTM_PL_VRAM, false,
+			     vbox->available_vram_size >> PAGE_SHIFT);
+#else
 	ret = ttm_bo_init_mm(bdev, TTM_PL_VRAM,
 			     vbox->available_vram_size >> PAGE_SHIFT);
+#endif
 	if (ret) {
 		DRM_ERROR("Failed ttm VRAM init: %d\n", ret);
 		goto err_device_release;
@@ -359,7 +417,7 @@ void vbox_mm_fini(struct vbox_private *vbox)
 #endif
 }
 
-void vbox_ttm_placement(struct vbox_bo *bo, int domain)
+void vbox_ttm_placement(struct vbox_bo *bo, u32 mem_type)
 {
 	u32 c = 0;
 #if RTLNX_VER_MAX(3,18,0) && !RTLNX_RHEL_MAJ_PREREQ(7,2)
@@ -372,15 +430,36 @@ void vbox_ttm_placement(struct vbox_bo *bo, int domain)
 	bo->placement.placement = bo->placements;
 	bo->placement.busy_placement = bo->placements;
 
-	if (domain & TTM_PL_FLAG_VRAM)
+	if (mem_type & VBOX_MEM_TYPE_VRAM) {
+#if RTLNX_VER_MIN(5,10,0)
+		bo->placements[c].mem_type = TTM_PL_VRAM;
+		PLACEMENT_FLAGS(bo->placements[c++]) =
+		    TTM_PL_FLAG_WC | TTM_PL_FLAG_UNCACHED;
+#else
 		PLACEMENT_FLAGS(bo->placements[c++]) =
 		    TTM_PL_FLAG_WC | TTM_PL_FLAG_UNCACHED | TTM_PL_FLAG_VRAM;
-	if (domain & TTM_PL_FLAG_SYSTEM)
+#endif
+	}
+	if (mem_type & VBOX_MEM_TYPE_SYSTEM) {
+#if RTLNX_VER_MIN(5,10,0)
+		bo->placements[c].mem_type = TTM_PL_SYSTEM;
+		PLACEMENT_FLAGS(bo->placements[c++]) =
+		    TTM_PL_MASK_CACHING;
+#else
 		PLACEMENT_FLAGS(bo->placements[c++]) =
 		    TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM;
-	if (!c)
+#endif
+	}
+	if (!c) {
+#if RTLNX_VER_MIN(5,10,0)
+		bo->placements[c].mem_type = TTM_PL_SYSTEM;
+		PLACEMENT_FLAGS(bo->placements[c++]) =
+		    TTM_PL_MASK_CACHING;
+#else
 		PLACEMENT_FLAGS(bo->placements[c++]) =
 		    TTM_PL_MASK_CACHING | TTM_PL_FLAG_SYSTEM;
+#endif
+	}
 
 	bo->placement.num_placement = c;
 	bo->placement.num_busy_placement = c;
@@ -414,7 +493,7 @@ int vbox_bo_create(struct drm_device *dev, int size, int align,
 	vboxbo->bo.bdev->dev_mapping = dev->dev_mapping;
 #endif
 
-	vbox_ttm_placement(vboxbo, TTM_PL_FLAG_VRAM | TTM_PL_FLAG_SYSTEM);
+	vbox_ttm_placement(vboxbo, VBOX_MEM_TYPE_VRAM | VBOX_MEM_TYPE_SYSTEM);
 
 	acc_size = ttm_bo_dma_acc_size(&vbox->ttm.bdev, size,
 				       sizeof(struct vbox_bo));
@@ -452,7 +531,7 @@ static inline u64 vbox_bo_gpu_offset(struct vbox_bo *bo)
 #endif
 }
 
-int vbox_bo_pin(struct vbox_bo *bo, u32 pl_flag, u64 *gpu_addr)
+int vbox_bo_pin(struct vbox_bo *bo, u32 mem_type, u64 *gpu_addr)
 {
 #if RTLNX_VER_MIN(4,16,0) || RTLNX_RHEL_MAJ_PREREQ(7,6) || RTLNX_SUSE_MAJ_PREREQ(15,1) || RTLNX_SUSE_MAJ_PREREQ(12,5)
 	struct ttm_operation_ctx ctx = { false, false };
@@ -467,7 +546,7 @@ int vbox_bo_pin(struct vbox_bo *bo, u32 pl_flag, u64 *gpu_addr)
 		return 0;
 	}
 
-	vbox_ttm_placement(bo, pl_flag);
+	vbox_ttm_placement(bo, mem_type);
 
 	for (i = 0; i < bo->placement.num_placement; i++)
 		PLACEMENT_FLAGS(bo->placements[i]) |= TTM_PL_FLAG_NO_EVICT;
@@ -540,7 +619,7 @@ int vbox_bo_push_sysram(struct vbox_bo *bo)
 	if (bo->kmap.virtual)
 		ttm_bo_kunmap(&bo->kmap);
 
-	vbox_ttm_placement(bo, TTM_PL_FLAG_SYSTEM);
+	vbox_ttm_placement(bo, VBOX_MEM_TYPE_SYSTEM);
 
 	for (i = 0; i < bo->placement.num_placement; i++)
 		PLACEMENT_FLAGS(bo->placements[i]) |= TTM_PL_FLAG_NO_EVICT;
-- 
2.19.1