From a3232987fdbf0bede92a9d7c7e2db99a5084d31b Mon Sep 17 00:00:00 2001 From: Thomas Zimmermann Date: Wed, 8 May 2019 10:26:22 +0200 Subject: drm/bochs: Convert bochs driver to |struct drm_gem_vram_object| The data structure |struct drm_gem_vram_object| and its helpers replace |struct bochs_bo|. It's the same implementation; except for the type names. v5: * use PRIME helpers from GEM VRAM v4: * cleanups from checkpatch.pl * select config option DRM_VRAM_HELPER Signed-off-by: Thomas Zimmermann Link: http://patchwork.freedesktop.org/patch/msgid/20190508082630.15116-13-tzimmermann@suse.de Signed-off-by: Gerd Hoffmann --- drivers/gpu/drm/bochs/Kconfig | 1 + drivers/gpu/drm/bochs/bochs.h | 41 +----- drivers/gpu/drm/bochs/bochs_drv.c | 15 +- drivers/gpu/drm/bochs/bochs_kms.c | 18 +-- drivers/gpu/drm/bochs/bochs_mm.c | 288 +------------------------------------- 5 files changed, 21 insertions(+), 342 deletions(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/bochs/Kconfig b/drivers/gpu/drm/bochs/Kconfig index bd2718015cdb..4cbcff9e2eb8 100644 --- a/drivers/gpu/drm/bochs/Kconfig +++ b/drivers/gpu/drm/bochs/Kconfig @@ -3,6 +3,7 @@ config DRM_BOCHS depends on DRM && PCI && MMU select DRM_KMS_HELPER select DRM_TTM + select DRM_VRAM_HELPER help Choose this option for qemu. If M is selected the module will be called bochs-drm. diff --git a/drivers/gpu/drm/bochs/bochs.h b/drivers/gpu/drm/bochs/bochs.h index 341cc9d1bab4..b0a4c3f90497 100644 --- a/drivers/gpu/drm/bochs/bochs.h +++ b/drivers/gpu/drm/bochs/bochs.h @@ -10,6 +10,7 @@ #include #include +#include #include #include @@ -81,30 +82,6 @@ struct bochs_device { } ttm; }; -struct bochs_bo { - struct ttm_buffer_object bo; - struct ttm_placement placement; - struct ttm_bo_kmap_obj kmap; - struct drm_gem_object gem; - struct ttm_place placements[3]; - int pin_count; -}; - -static inline struct bochs_bo *bochs_bo(struct ttm_buffer_object *bo) -{ - return container_of(bo, struct bochs_bo, bo); -} - -static inline struct bochs_bo *gem_to_bochs_bo(struct drm_gem_object *gem) -{ - return container_of(gem, struct bochs_bo, gem); -} - -static inline u64 bochs_bo_mmap_offset(struct bochs_bo *bo) -{ - return drm_vma_node_offset_addr(&bo->bo.vma_node); -} - /* ---------------------------------------------------------------------- */ /* bochs_hw.c */ @@ -124,24 +101,8 @@ 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_gem_create(struct drm_device *dev, u32 size, bool iskernel, - struct drm_gem_object **obj); -int bochs_gem_init_object(struct drm_gem_object *obj); -void bochs_gem_free_object(struct drm_gem_object *obj); int bochs_dumb_create(struct drm_file *file, struct drm_device *dev, struct drm_mode_create_dumb *args); -int bochs_dumb_mmap_offset(struct drm_file *file, struct drm_device *dev, - uint32_t handle, uint64_t *offset); - -int bochs_bo_pin(struct bochs_bo *bo, u32 pl_flag); -int bochs_bo_unpin(struct bochs_bo *bo); - -int bochs_gem_prime_pin(struct drm_gem_object *obj); -void bochs_gem_prime_unpin(struct drm_gem_object *obj); -void *bochs_gem_prime_vmap(struct drm_gem_object *obj); -void bochs_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr); -int bochs_gem_prime_mmap(struct drm_gem_object *obj, - struct vm_area_struct *vma); /* bochs_kms.c */ int bochs_kms_init(struct bochs_device *bochs); diff --git a/drivers/gpu/drm/bochs/bochs_drv.c b/drivers/gpu/drm/bochs/bochs_drv.c index 6b6e037258c3..1b1047ada130 100644 --- a/drivers/gpu/drm/bochs/bochs_drv.c +++ b/drivers/gpu/drm/bochs/bochs_drv.c @@ -82,17 +82,12 @@ static struct drm_driver bochs_driver = { .date = "20130925", .major = 1, .minor = 0, - .gem_free_object_unlocked = bochs_gem_free_object, + .gem_free_object_unlocked = + drm_gem_vram_driver_gem_free_object_unlocked, .dumb_create = bochs_dumb_create, - .dumb_map_offset = bochs_dumb_mmap_offset, - - .gem_prime_export = drm_gem_prime_export, - .gem_prime_import = drm_gem_prime_import, - .gem_prime_pin = bochs_gem_prime_pin, - .gem_prime_unpin = bochs_gem_prime_unpin, - .gem_prime_vmap = bochs_gem_prime_vmap, - .gem_prime_vunmap = bochs_gem_prime_vunmap, - .gem_prime_mmap = bochs_gem_prime_mmap, + .dumb_map_offset = drm_gem_vram_driver_dumb_mmap_offset, + + DRM_GEM_VRAM_DRIVER_PRIME, }; /* ---------------------------------------------------------------------- */ diff --git a/drivers/gpu/drm/bochs/bochs_kms.c b/drivers/gpu/drm/bochs/bochs_kms.c index 5e905f50449d..9e3ee7b511fb 100644 --- a/drivers/gpu/drm/bochs/bochs_kms.c +++ b/drivers/gpu/drm/bochs/bochs_kms.c @@ -30,16 +30,16 @@ static const uint32_t bochs_formats[] = { static void bochs_plane_update(struct bochs_device *bochs, struct drm_plane_state *state) { - struct bochs_bo *bo; + struct drm_gem_vram_object *gbo; if (!state->fb || !bochs->stride) return; - bo = gem_to_bochs_bo(state->fb->obj[0]); + gbo = drm_gem_vram_of_gem(state->fb->obj[0]); bochs_hw_setbase(bochs, state->crtc_x, state->crtc_y, - bo->bo.offset); + gbo->bo.offset); bochs_hw_setformat(bochs, state->fb->format); } @@ -72,23 +72,23 @@ static void bochs_pipe_update(struct drm_simple_display_pipe *pipe, static int bochs_pipe_prepare_fb(struct drm_simple_display_pipe *pipe, struct drm_plane_state *new_state) { - struct bochs_bo *bo; + struct drm_gem_vram_object *gbo; if (!new_state->fb) return 0; - bo = gem_to_bochs_bo(new_state->fb->obj[0]); - return bochs_bo_pin(bo, TTM_PL_FLAG_VRAM); + gbo = drm_gem_vram_of_gem(new_state->fb->obj[0]); + return drm_gem_vram_pin(gbo, DRM_GEM_VRAM_PL_FLAG_VRAM); } static void bochs_pipe_cleanup_fb(struct drm_simple_display_pipe *pipe, struct drm_plane_state *old_state) { - struct bochs_bo *bo; + struct drm_gem_vram_object *gbo; if (!old_state->fb) return; - bo = gem_to_bochs_bo(old_state->fb->obj[0]); - bochs_bo_unpin(bo); + gbo = drm_gem_vram_of_gem(old_state->fb->obj[0]); + drm_gem_vram_unpin(gbo); } static const struct drm_simple_display_pipe_funcs bochs_pipe_funcs = { diff --git a/drivers/gpu/drm/bochs/bochs_mm.c b/drivers/gpu/drm/bochs/bochs_mm.c index 4a40308169c4..b19ff8094049 100644 --- a/drivers/gpu/drm/bochs/bochs_mm.c +++ b/drivers/gpu/drm/bochs/bochs_mm.c @@ -7,8 +7,6 @@ #include "bochs.h" -static void bochs_ttm_placement(struct bochs_bo *bo, int domain); - /* ---------------------------------------------------------------------- */ static inline struct bochs_device *bochs_bdev(struct ttm_bo_device *bd) @@ -16,22 +14,6 @@ static inline struct bochs_device *bochs_bdev(struct ttm_bo_device *bd) return container_of(bd, struct bochs_device, ttm.bdev); } -static void bochs_bo_ttm_destroy(struct ttm_buffer_object *tbo) -{ - struct bochs_bo *bo; - - bo = container_of(tbo, struct bochs_bo, bo); - drm_gem_object_release(&bo->gem); - kfree(bo); -} - -static bool bochs_ttm_bo_is_bochs_bo(struct ttm_buffer_object *bo) -{ - if (bo->destroy == &bochs_bo_ttm_destroy) - return true; - return false; -} - static int bochs_bo_init_mem_type(struct ttm_bo_device *bdev, uint32_t type, struct ttm_mem_type_manager *man) { @@ -56,27 +38,6 @@ static int bochs_bo_init_mem_type(struct ttm_bo_device *bdev, uint32_t type, return 0; } -static void -bochs_bo_evict_flags(struct ttm_buffer_object *bo, struct ttm_placement *pl) -{ - struct bochs_bo *bochsbo = bochs_bo(bo); - - if (!bochs_ttm_bo_is_bochs_bo(bo)) - return; - - bochs_ttm_placement(bochsbo, TTM_PL_FLAG_SYSTEM); - *pl = bochsbo->placement; -} - -static int bochs_bo_verify_access(struct ttm_buffer_object *bo, - struct file *filp) -{ - struct bochs_bo *bochsbo = bochs_bo(bo); - - return drm_vma_node_verify_access(&bochsbo->gem.vma_node, - filp->private_data); -} - static int bochs_ttm_io_mem_reserve(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem) { @@ -141,9 +102,9 @@ 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 = bochs_bo_evict_flags, + .evict_flags = drm_gem_vram_bo_driver_evict_flags, .move = NULL, - .verify_access = bochs_bo_verify_access, + .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, }; @@ -182,85 +143,6 @@ void bochs_mm_fini(struct bochs_device *bochs) bochs->ttm.initialized = false; } -static void bochs_ttm_placement(struct bochs_bo *bo, int domain) -{ - unsigned i; - u32 c = 0; - bo->placement.placement = bo->placements; - bo->placement.busy_placement = bo->placements; - if (domain & TTM_PL_FLAG_VRAM) { - bo->placements[c++].flags = TTM_PL_FLAG_WC - | TTM_PL_FLAG_UNCACHED - | TTM_PL_FLAG_VRAM; - } - if (domain & TTM_PL_FLAG_SYSTEM) { - bo->placements[c++].flags = TTM_PL_MASK_CACHING - | TTM_PL_FLAG_SYSTEM; - } - if (!c) { - bo->placements[c++].flags = TTM_PL_MASK_CACHING - | TTM_PL_FLAG_SYSTEM; - } - for (i = 0; i < c; ++i) { - bo->placements[i].fpfn = 0; - bo->placements[i].lpfn = 0; - } - bo->placement.num_placement = c; - bo->placement.num_busy_placement = c; -} - -int bochs_bo_pin(struct bochs_bo *bo, u32 pl_flag) -{ - struct ttm_operation_ctx ctx = { false, false }; - int i, ret; - - if (bo->pin_count) { - bo->pin_count++; - return 0; - } - - bochs_ttm_placement(bo, pl_flag); - for (i = 0; i < bo->placement.num_placement; i++) - bo->placements[i].flags |= TTM_PL_FLAG_NO_EVICT; - ret = ttm_bo_reserve(&bo->bo, true, false, NULL); - if (ret) - return ret; - ret = ttm_bo_validate(&bo->bo, &bo->placement, &ctx); - ttm_bo_unreserve(&bo->bo); - if (ret) - return ret; - - bo->pin_count = 1; - return 0; -} - -int bochs_bo_unpin(struct bochs_bo *bo) -{ - struct ttm_operation_ctx ctx = { false, false }; - int i, ret; - - if (!bo->pin_count) { - DRM_ERROR("unpin bad %p\n", bo); - return 0; - } - bo->pin_count--; - - if (bo->pin_count) - return 0; - - for (i = 0; i < bo->placement.num_placement; i++) - bo->placements[i].flags &= ~TTM_PL_FLAG_NO_EVICT; - ret = ttm_bo_reserve(&bo->bo, true, false, NULL); - if (ret) - return ret; - ret = ttm_bo_validate(&bo->bo, &bo->placement, &ctx); - ttm_bo_unreserve(&bo->bo); - if (ret) - return ret; - - return 0; -} - int bochs_mmap(struct file *filp, struct vm_area_struct *vma) { struct drm_file *file_priv = filp->private_data; @@ -271,171 +153,11 @@ int bochs_mmap(struct file *filp, struct vm_area_struct *vma) /* ---------------------------------------------------------------------- */ -static int bochs_bo_create(struct drm_device *dev, int size, int align, - uint32_t flags, struct bochs_bo **pbochsbo) -{ - struct bochs_device *bochs = dev->dev_private; - struct bochs_bo *bochsbo; - size_t acc_size; - int ret; - - bochsbo = kzalloc(sizeof(struct bochs_bo), GFP_KERNEL); - if (!bochsbo) - return -ENOMEM; - - ret = drm_gem_object_init(dev, &bochsbo->gem, size); - if (ret) { - kfree(bochsbo); - return ret; - } - - bochsbo->bo.bdev = &bochs->ttm.bdev; - bochsbo->bo.bdev->dev_mapping = dev->anon_inode->i_mapping; - - bochs_ttm_placement(bochsbo, TTM_PL_FLAG_VRAM | TTM_PL_FLAG_SYSTEM); - - acc_size = ttm_bo_dma_acc_size(&bochs->ttm.bdev, size, - sizeof(struct bochs_bo)); - - ret = ttm_bo_init(&bochs->ttm.bdev, &bochsbo->bo, size, - ttm_bo_type_device, &bochsbo->placement, - align >> PAGE_SHIFT, false, acc_size, - NULL, NULL, bochs_bo_ttm_destroy); - if (ret) - return ret; - - *pbochsbo = bochsbo; - return 0; -} - -int bochs_gem_create(struct drm_device *dev, u32 size, bool iskernel, - struct drm_gem_object **obj) -{ - struct bochs_bo *bochsbo; - int ret; - - *obj = NULL; - - size = PAGE_ALIGN(size); - if (size == 0) - return -EINVAL; - - ret = bochs_bo_create(dev, size, 0, 0, &bochsbo); - if (ret) { - if (ret != -ERESTARTSYS) - DRM_ERROR("failed to allocate GEM object\n"); - return ret; - } - *obj = &bochsbo->gem; - return 0; -} - int bochs_dumb_create(struct drm_file *file, struct drm_device *dev, struct drm_mode_create_dumb *args) { - struct drm_gem_object *gobj; - u32 handle; - int ret; - - args->pitch = args->width * ((args->bpp + 7) / 8); - args->size = args->pitch * args->height; - - ret = bochs_gem_create(dev, args->size, false, - &gobj); - if (ret) - return ret; - - ret = drm_gem_handle_create(file, gobj, &handle); - drm_gem_object_put_unlocked(gobj); - if (ret) - return ret; - - args->handle = handle; - return 0; -} - -static void bochs_bo_unref(struct bochs_bo **bo) -{ - struct ttm_buffer_object *tbo; - - if ((*bo) == NULL) - return; - - tbo = &((*bo)->bo); - ttm_bo_put(tbo); - *bo = NULL; -} - -void bochs_gem_free_object(struct drm_gem_object *obj) -{ - struct bochs_bo *bochs_bo = gem_to_bochs_bo(obj); - - bochs_bo_unref(&bochs_bo); -} - -int bochs_dumb_mmap_offset(struct drm_file *file, struct drm_device *dev, - uint32_t handle, uint64_t *offset) -{ - struct drm_gem_object *obj; - struct bochs_bo *bo; - - obj = drm_gem_object_lookup(file, handle); - if (obj == NULL) - return -ENOENT; - - bo = gem_to_bochs_bo(obj); - *offset = bochs_bo_mmap_offset(bo); - - drm_gem_object_put_unlocked(obj); - return 0; -} - -/* ---------------------------------------------------------------------- */ - -int bochs_gem_prime_pin(struct drm_gem_object *obj) -{ - struct bochs_bo *bo = gem_to_bochs_bo(obj); - - return bochs_bo_pin(bo, TTM_PL_FLAG_VRAM); -} - -void bochs_gem_prime_unpin(struct drm_gem_object *obj) -{ - struct bochs_bo *bo = gem_to_bochs_bo(obj); - - bochs_bo_unpin(bo); -} - -void *bochs_gem_prime_vmap(struct drm_gem_object *obj) -{ - struct bochs_bo *bo = gem_to_bochs_bo(obj); - bool is_iomem; - int ret; - - ret = bochs_bo_pin(bo, TTM_PL_FLAG_VRAM); - if (ret) - return NULL; - ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &bo->kmap); - if (ret) { - bochs_bo_unpin(bo); - return NULL; - } - return ttm_kmap_obj_virtual(&bo->kmap, &is_iomem); -} - -void bochs_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr) -{ - struct bochs_bo *bo = gem_to_bochs_bo(obj); - - ttm_bo_kunmap(&bo->kmap); - bochs_bo_unpin(bo); -} - -int bochs_gem_prime_mmap(struct drm_gem_object *obj, - struct vm_area_struct *vma) -{ - struct bochs_bo *bo = gem_to_bochs_bo(obj); + struct bochs_device *bochs = dev->dev_private; - bo->gem.vma_node.vm_node.start = bo->bo.vma_node.vm_node.start; - return drm_gem_prime_mmap(obj, vma); + return drm_gem_vram_fill_create_dumb(file, dev, &bochs->ttm.bdev, 0, + false, args); } -- cgit v1.2.3