From 132a45340a4b80ade65817b4cdfc28c955c4fe11 Mon Sep 17 00:00:00 2001 From: Gerd Hoffmann Date: Fri, 11 Jan 2019 06:37:49 +0100 Subject: [PATCH] drm/bochs: add basic prime support Just enough to make the generic framebuffer emulation happy. Signed-off-by: Gerd Hoffmann Reviewed-by: Oleksandr Andrushchenko Acked-by: Daniel Vetter Link: http://patchwork.freedesktop.org/patch/msgid/20190111053752.4004-14-kraxel@redhat.com --- drivers/gpu/drm/bochs/bochs.h | 7 +++++ drivers/gpu/drm/bochs/bochs_drv.c | 11 ++++++- drivers/gpu/drm/bochs/bochs_mm.c | 49 +++++++++++++++++++++++++++++++ 3 files changed, 66 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/bochs/bochs.h b/drivers/gpu/drm/bochs/bochs.h index d0d474e06fa7..ede22beb85e6 100644 --- a/drivers/gpu/drm/bochs/bochs.h +++ b/drivers/gpu/drm/bochs/bochs.h @@ -145,6 +145,13 @@ int bochs_dumb_mmap_offset(struct drm_file *file, struct drm_device *dev, 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); void bochs_kms_fini(struct bochs_device *bochs); diff --git a/drivers/gpu/drm/bochs/bochs_drv.c b/drivers/gpu/drm/bochs/bochs_drv.c index a8cb22cffe9f..a3f4e21078ed 100644 --- a/drivers/gpu/drm/bochs/bochs_drv.c +++ b/drivers/gpu/drm/bochs/bochs_drv.c @@ -81,7 +81,8 @@ static const struct file_operations bochs_fops = { }; static struct drm_driver bochs_driver = { - .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC, + .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC | + DRIVER_PRIME, .fops = &bochs_fops, .name = "bochs-drm", .desc = "bochs dispi vga interface (qemu stdvga)", @@ -91,6 +92,14 @@ static struct drm_driver bochs_driver = { .gem_free_object_unlocked = bochs_gem_free_object, .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, }; /* ---------------------------------------------------------------------- */ diff --git a/drivers/gpu/drm/bochs/bochs_mm.c b/drivers/gpu/drm/bochs/bochs_mm.c index fcbf35456d4e..641a33f134ee 100644 --- a/drivers/gpu/drm/bochs/bochs_mm.c +++ b/drivers/gpu/drm/bochs/bochs_mm.c @@ -395,3 +395,52 @@ int bochs_dumb_mmap_offset(struct drm_file *file, struct drm_device *dev, 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); + + return ttm_fbdev_mmap(vma, &bo->bo); +} -- 2.30.2