The data structure |struct drm_vram_mm| and its helpers replace ast's
TTM-based memory manager. It's the same implementation; except for the
type names.
v2:
* implement ast_mmap() with drm_vram_mm_mmap()
Signed-off-by: Thomas Zimmermann <tzimmerm...@suse.de>
---
drivers/gpu/drm/ast/Kconfig | 1 +
drivers/gpu/drm/ast/ast_drv.h | 12 +---
drivers/gpu/drm/ast/ast_main.c | 4 +-
drivers/gpu/drm/ast/ast_ttm.c | 123 +++------------------------------
4 files changed, 14 insertions(+), 126 deletions(-)
diff --git a/drivers/gpu/drm/ast/Kconfig b/drivers/gpu/drm/ast/Kconfig
index d1d90f8c7a8f..ecc9c905b81b 100644
--- a/drivers/gpu/drm/ast/Kconfig
+++ b/drivers/gpu/drm/ast/Kconfig
@@ -4,6 +4,7 @@ config DRM_AST
select DRM_TTM
select DRM_KMS_HELPER
select DRM_GEM_VRAM_HELPER
+ select DRM_VRAM_MM_HELPER
help
Say yes for experimental AST GPU driver. Do not enable
this driver without having a working -modesetting,
diff --git a/drivers/gpu/drm/ast/ast_drv.h b/drivers/gpu/drm/ast/ast_drv.h
index 712838f725dc..8fee400f5c41 100644
--- a/drivers/gpu/drm/ast/ast_drv.h
+++ b/drivers/gpu/drm/ast/ast_drv.h
@@ -31,15 +31,11 @@
#include <drm/drm_encoder.h>
#include <drm/drm_fb_helper.h>
-#include <drm/ttm/ttm_bo_api.h>
-#include <drm/ttm/ttm_bo_driver.h>
-#include <drm/ttm/ttm_placement.h>
-#include <drm/ttm/ttm_memory.h>
-#include <drm/ttm/ttm_module.h>
-
#include <drm/drm_gem.h>
#include <drm/drm_gem_vram_helper.h>
+#include <drm/drm_vram_mm_helper.h>
+
#include <linux/i2c.h>
#include <linux/i2c-algo-bit.h>
@@ -104,9 +100,7 @@ struct ast_private {
int fb_mtrr;
- struct {
- struct ttm_bo_device bdev;
- } ttm;
+ struct drm_vram_mm vmm;
struct drm_gem_object *cursor_cache;
uint64_t cursor_cache_gpu_addr;
diff --git a/drivers/gpu/drm/ast/ast_main.c b/drivers/gpu/drm/ast/ast_main.c
index 61fc7b8ea470..92510251fe25 100644
--- a/drivers/gpu/drm/ast/ast_main.c
+++ b/drivers/gpu/drm/ast/ast_main.c
@@ -603,7 +603,7 @@ int ast_gem_create(struct drm_device *dev,
if (size == 0)
return -EINVAL;
- gbo = drm_gem_vram_create(dev, &ast->ttm.bdev, size, 0, false);
+ gbo = drm_gem_vram_create(dev, &ast->vmm.bdev, size, 0, false);
if (IS_ERR(gbo)) {
ret = PTR_ERR(gbo);
if (ret != -ERESTARTSYS)
@@ -620,6 +620,6 @@ int ast_dumb_create(struct drm_file *file,
{
struct ast_private *ast = dev->dev_private;
- return drm_gem_vram_fill_create_dumb(file, dev, &ast->ttm.bdev, 0,
+ return drm_gem_vram_fill_create_dumb(file, dev, &ast->vmm.bdev, 0,
false, args);
}
diff --git a/drivers/gpu/drm/ast/ast_ttm.c b/drivers/gpu/drm/ast/ast_ttm.c
index 794ebb755a5d..78032327b64b 100644
--- a/drivers/gpu/drm/ast/ast_ttm.c
+++ b/drivers/gpu/drm/ast/ast_ttm.c
@@ -26,131 +26,24 @@
* Authors: Dave Airlie <airl...@redhat.com>
*/
#include <drm/drmP.h>
-#include <drm/ttm/ttm_page_alloc.h>
#include "ast_drv.h"
-static inline struct ast_private *
-ast_bdev(struct ttm_bo_device *bd)
-{
- return container_of(bd, struct ast_private, ttm.bdev);
-}
-
-static int
-ast_bo_init_mem_type(struct ttm_bo_device *bdev, uint32_t type,
- struct ttm_mem_type_manager *man)
-{
- switch (type) {
- case TTM_PL_SYSTEM:
- man->flags = TTM_MEMTYPE_FLAG_MAPPABLE;
- man->available_caching = TTM_PL_MASK_CACHING;
- man->default_caching = TTM_PL_FLAG_CACHED;
- break;
- case TTM_PL_VRAM:
- man->func = &ttm_bo_manager_func;
- man->flags = TTM_MEMTYPE_FLAG_FIXED |
- TTM_MEMTYPE_FLAG_MAPPABLE;
- man->available_caching = TTM_PL_FLAG_UNCACHED |
- TTM_PL_FLAG_WC;
- man->default_caching = TTM_PL_FLAG_WC;
- break;
- default:
- DRM_ERROR("Unsupported memory type %u\n", (unsigned)type);
- return -EINVAL;
- }
- return 0;
-}
-
-static int ast_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 ast_private *ast = ast_bdev(bdev);
-
- mem->bus.addr = NULL;
- mem->bus.offset = 0;
- mem->bus.size = mem->num_pages << PAGE_SHIFT;
- mem->bus.base = 0;
- mem->bus.is_iomem = false;
- if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE))
- return -EINVAL;
- switch (mem->mem_type) {
- case TTM_PL_SYSTEM:
- /* system memory */
- return 0;
- case TTM_PL_VRAM:
- mem->bus.offset = mem->start << PAGE_SHIFT;
- mem->bus.base = pci_resource_start(ast->dev->pdev, 0);
- mem->bus.is_iomem = true;
- break;
- default:
- return -EINVAL;
- break;
- }
- return 0;
-}
-
-static void ast_ttm_io_mem_free(struct ttm_bo_device *bdev, struct ttm_mem_reg
*mem)
-{
-}
-
-static void ast_ttm_backend_destroy(struct ttm_tt *tt)
-{
- ttm_tt_fini(tt);
- kfree(tt);
-}
-
-static struct ttm_backend_func ast_tt_backend_func = {
- .destroy = &ast_ttm_backend_destroy,
-};
-
-
-static struct ttm_tt *ast_ttm_tt_create(struct ttm_buffer_object *bo,
- uint32_t page_flags)
-{
- struct ttm_tt *tt;
-
- tt = kzalloc(sizeof(struct ttm_tt), GFP_KERNEL);
- if (tt == NULL)
- return NULL;
- tt->func = &ast_tt_backend_func;
- if (ttm_tt_init(tt, bo, page_flags)) {
- kfree(tt);
- return NULL;
- }
- return tt;
-}
-
-struct ttm_bo_driver ast_bo_driver = {
- .ttm_tt_create = ast_ttm_tt_create,
- .init_mem_type = ast_bo_init_mem_type,
- .eviction_valuable = ttm_bo_eviction_valuable,
+static const struct drm_vram_mm_funcs ast_vram_mm_funcs = {
.evict_flags = drm_gem_vram_bo_driver_evict_flags,
- .move = NULL,
- .verify_access = drm_gem_vram_bo_driver_verify_access,
- .io_mem_reserve = &ast_ttm_io_mem_reserve,
- .io_mem_free = &ast_ttm_io_mem_free,
+ .verify_access = drm_gem_vram_bo_driver_verify_access
};
int ast_mm_init(struct ast_private *ast)
{
int ret;
struct drm_device *dev = ast->dev;
- struct ttm_bo_device *bdev = &ast->ttm.bdev;
-
- ret = ttm_bo_device_init(&ast->ttm.bdev,
- &ast_bo_driver,
- dev->anon_inode->i_mapping,
- true);
- if (ret) {
- DRM_ERROR("Error initialising bo driver; %d\n", ret);
- return ret;
- }
- ret = ttm_bo_init_mm(bdev, TTM_PL_VRAM,
- ast->vram_size >> PAGE_SHIFT);
+ ret = drm_vram_mm_init(&ast->vmm, dev,
+ pci_resource_start(dev->pdev, 0),
+ ast->vram_size, &ast_vram_mm_funcs);
if (ret) {
- DRM_ERROR("Failed ttm VRAM init: %d\n", ret);
+ DRM_ERROR("Error initializing VRAM MM; %d\n", ret);
return ret;
}
@@ -166,7 +59,7 @@ void ast_mm_fini(struct ast_private *ast)
{
struct drm_device *dev = ast->dev;
- ttm_bo_device_release(&ast->ttm.bdev);
+ drm_vram_mm_cleanup(&ast->vmm);
arch_phys_wc_del(ast->fb_mtrr);
arch_io_free_memtype_wc(pci_resource_start(dev->pdev, 0),
@@ -178,5 +71,5 @@ int ast_mmap(struct file *filp, struct vm_area_struct *vma)
struct drm_file *file_priv = filp->private_data;
struct ast_private *ast = file_priv->minor->dev->dev_private;
- return ttm_bo_mmap(filp, vma, &ast->ttm.bdev);
+ return drm_vram_mm_mmap(filp, vma, &ast->vmm);
}
--
2.21.0
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