The data structure |struct drm_vram_mm| and its helpers replace bochs' TTM-based memory manager. It's the same implementation; except for the type names.
v4: * don't select DRM_TTM or DRM_VRAM_MM_HELPER v3: * use drm_gem_vram_mm_funcs * convert driver to drm_device-based instance v2: * implement bochs_mmap() with drm_vram_mm_mmap()
Signed-off-by: Thomas Zimmermann tzimmermann@suse.de --- drivers/gpu/drm/bochs/Kconfig | 1 - drivers/gpu/drm/bochs/bochs.h | 13 +-- drivers/gpu/drm/bochs/bochs_drv.c | 14 +-- drivers/gpu/drm/bochs/bochs_mm.c | 148 ++---------------------------- 4 files changed, 12 insertions(+), 164 deletions(-)
diff --git a/drivers/gpu/drm/bochs/Kconfig b/drivers/gpu/drm/bochs/Kconfig index 4cbcff9e2eb8..e1f6ae9dd042 100644 --- a/drivers/gpu/drm/bochs/Kconfig +++ b/drivers/gpu/drm/bochs/Kconfig @@ -2,7 +2,6 @@ config DRM_BOCHS tristate "DRM Support for bochs dispi vga interface (qemu stdvga)" depends on DRM && PCI && MMU select DRM_KMS_HELPER - select DRM_TTM select DRM_VRAM_HELPER help Choose this option for qemu. diff --git a/drivers/gpu/drm/bochs/bochs.h b/drivers/gpu/drm/bochs/bochs.h index 4ccf82e1ca68..323dcca256a3 100644 --- a/drivers/gpu/drm/bochs/bochs.h +++ b/drivers/gpu/drm/bochs/bochs.h @@ -12,8 +12,7 @@ #include <drm/drm_gem.h> #include <drm/drm_gem_vram_helper.h>
-#include <drm/ttm/ttm_bo_driver.h> -#include <drm/ttm/ttm_page_alloc.h> +#include <drm/drm_vram_mm_helper.h>
/* ---------------------------------------------------------------------- */
@@ -74,12 +73,6 @@ struct bochs_device { struct drm_device *dev; struct drm_simple_display_pipe pipe; struct drm_connector connector; - - /* ttm */ - struct { - struct ttm_bo_device bdev; - bool initialized; - } ttm; };
/* ---------------------------------------------------------------------- */ @@ -99,10 +92,6 @@ int bochs_hw_load_edid(struct bochs_device *bochs); /* bochs_mm.c */ int bochs_mm_init(struct bochs_device *bochs); void bochs_mm_fini(struct bochs_device *bochs); -int bochs_mmap(struct file *filp, struct vm_area_struct *vma); - -int bochs_dumb_create(struct drm_file *file, struct drm_device *dev, - struct drm_mode_create_dumb *args);
int bochs_gem_prime_pin(struct drm_gem_object *obj); void bochs_gem_prime_unpin(struct drm_gem_object *obj); diff --git a/drivers/gpu/drm/bochs/bochs_drv.c b/drivers/gpu/drm/bochs/bochs_drv.c index 04fed41d6c00..f3bb5fba30bf 100644 --- a/drivers/gpu/drm/bochs/bochs_drv.c +++ b/drivers/gpu/drm/bochs/bochs_drv.c @@ -63,14 +63,8 @@ static int bochs_load(struct drm_device *dev)
static const struct file_operations bochs_fops = { .owner = THIS_MODULE, - .open = drm_open, - .release = drm_release, - .unlocked_ioctl = drm_ioctl, - .compat_ioctl = drm_compat_ioctl, - .poll = drm_poll, - .read = drm_read, .llseek = no_llseek, - .mmap = bochs_mmap, + DRM_VRAM_MM_FILE_OPERATIONS };
static struct drm_driver bochs_driver = { @@ -82,10 +76,8 @@ static struct drm_driver bochs_driver = { .date = "20130925", .major = 1, .minor = 0, - .gem_free_object_unlocked = - drm_gem_vram_driver_gem_free_object_unlocked, - .dumb_create = bochs_dumb_create, - .dumb_map_offset = drm_gem_vram_driver_dumb_mmap_offset, + + DRM_GEM_VRAM_DRIVER,
.gem_prime_export = drm_gem_prime_export, .gem_prime_import = drm_gem_prime_import, diff --git a/drivers/gpu/drm/bochs/bochs_mm.c b/drivers/gpu/drm/bochs/bochs_mm.c index 86062804e54f..e5de0e1a4ace 100644 --- a/drivers/gpu/drm/bochs/bochs_mm.c +++ b/drivers/gpu/drm/bochs/bochs_mm.c @@ -9,157 +9,25 @@
/* ---------------------------------------------------------------------- */
-static inline struct bochs_device *bochs_bdev(struct ttm_bo_device *bd) -{ - return container_of(bd, struct bochs_device, ttm.bdev); -} - -static int bochs_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 bochs_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 bochs_device *bochs = bochs_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 = bochs->fb_base; - mem->bus.is_iomem = true; - break; - default: - return -EINVAL; - break; - } - return 0; -} - -static void bochs_ttm_io_mem_free(struct ttm_bo_device *bdev, - struct ttm_mem_reg *mem) -{ -} - -static void bochs_ttm_backend_destroy(struct ttm_tt *tt) -{ - ttm_tt_fini(tt); - kfree(tt); -} - -static struct ttm_backend_func bochs_tt_backend_func = { - .destroy = &bochs_ttm_backend_destroy, -}; - -static struct ttm_tt *bochs_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 = &bochs_tt_backend_func; - if (ttm_tt_init(tt, bo, page_flags)) { - kfree(tt); - return NULL; - } - return tt; -} - -static struct ttm_bo_driver bochs_bo_driver = { - .ttm_tt_create = bochs_ttm_tt_create, - .init_mem_type = bochs_bo_init_mem_type, - .eviction_valuable = ttm_bo_eviction_valuable, - .evict_flags = drm_gem_vram_bo_driver_evict_flags, - .move = NULL, - .verify_access = drm_gem_vram_bo_driver_verify_access, - .io_mem_reserve = &bochs_ttm_io_mem_reserve, - .io_mem_free = &bochs_ttm_io_mem_free, -}; - int bochs_mm_init(struct bochs_device *bochs) { - struct ttm_bo_device *bdev = &bochs->ttm.bdev; - int ret; + struct drm_vram_mm *vmm;
- ret = ttm_bo_device_init(&bochs->ttm.bdev, - &bochs_bo_driver, - bochs->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, - bochs->fb_size >> PAGE_SHIFT); - if (ret) { - DRM_ERROR("Failed ttm VRAM init: %d\n", ret); - return ret; - } + vmm = drm_vram_helper_alloc_mm(bochs->dev, bochs->fb_base, + bochs->fb_size, + &drm_gem_vram_mm_funcs); + if (IS_ERR(vmm)) + return PTR_ERR(vmm);
- bochs->ttm.initialized = true; return 0; }
void bochs_mm_fini(struct bochs_device *bochs) { - if (!bochs->ttm.initialized) + if (!bochs->dev->vram_mm) return;
- ttm_bo_device_release(&bochs->ttm.bdev); - bochs->ttm.initialized = false; -} - -int bochs_mmap(struct file *filp, struct vm_area_struct *vma) -{ - struct drm_file *file_priv = filp->private_data; - struct bochs_device *bochs = file_priv->minor->dev->dev_private; - - return ttm_bo_mmap(filp, vma, &bochs->ttm.bdev); -} - -/* ---------------------------------------------------------------------- */ - -int bochs_dumb_create(struct drm_file *file, struct drm_device *dev, - struct drm_mode_create_dumb *args) -{ - struct bochs_device *bochs = dev->dev_private; - - return drm_gem_vram_fill_create_dumb(file, dev, &bochs->ttm.bdev, 0, - false, args); + drm_vram_helper_release_mm(bochs->dev); }
/* ---------------------------------------------------------------------- */