Moving the driver-specific mmap code into a GEM object function allows for using DRM helpers for various mmap callbacks.
The respective msm functions are being removed. The file_operations structure fops is now being created by the helper macro DEFINE_DRM_GEM_FOPS().
Signed-off-by: Thomas Zimmermann tzimmermann@suse.de --- drivers/gpu/drm/msm/msm_drv.c | 14 +----- drivers/gpu/drm/msm/msm_drv.h | 1 - drivers/gpu/drm/msm/msm_fbdev.c | 10 +---- drivers/gpu/drm/msm/msm_gem.c | 67 ++++++++++++----------------- drivers/gpu/drm/msm/msm_gem.h | 3 -- drivers/gpu/drm/msm/msm_gem_prime.c | 11 ----- 6 files changed, 31 insertions(+), 75 deletions(-)
diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index fe7d17cd35ec..f62eaedfc0d7 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -985,17 +985,7 @@ static const struct drm_ioctl_desc msm_ioctls[] = { DRM_IOCTL_DEF_DRV(MSM_SUBMITQUEUE_QUERY, msm_ioctl_submitqueue_query, DRM_RENDER_ALLOW), };
-static const struct file_operations 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 = msm_gem_mmap, -}; +DEFINE_DRM_GEM_FOPS(fops);
static const struct drm_driver msm_driver = { .driver_features = DRIVER_GEM | @@ -1015,7 +1005,7 @@ static const struct drm_driver msm_driver = { .prime_handle_to_fd = drm_gem_prime_handle_to_fd, .prime_fd_to_handle = drm_gem_prime_fd_to_handle, .gem_prime_import_sg_table = msm_gem_prime_import_sg_table, - .gem_prime_mmap = msm_gem_prime_mmap, + .gem_prime_mmap = drm_gem_prime_mmap, #ifdef CONFIG_DEBUG_FS .debugfs_init = msm_debugfs_init, #endif diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h index 2668941df529..8f1e0d7c8bbb 100644 --- a/drivers/gpu/drm/msm/msm_drv.h +++ b/drivers/gpu/drm/msm/msm_drv.h @@ -300,7 +300,6 @@ void msm_gem_shrinker_cleanup(struct drm_device *dev); struct sg_table *msm_gem_prime_get_sg_table(struct drm_gem_object *obj); int msm_gem_prime_vmap(struct drm_gem_object *obj, struct dma_buf_map *map); void msm_gem_prime_vunmap(struct drm_gem_object *obj, struct dma_buf_map *map); -int msm_gem_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma); struct drm_gem_object *msm_gem_prime_import_sg_table(struct drm_device *dev, struct dma_buf_attachment *attach, struct sg_table *sg); int msm_gem_prime_pin(struct drm_gem_object *obj); diff --git a/drivers/gpu/drm/msm/msm_fbdev.c b/drivers/gpu/drm/msm/msm_fbdev.c index 227404077e39..07225907fd2d 100644 --- a/drivers/gpu/drm/msm/msm_fbdev.c +++ b/drivers/gpu/drm/msm/msm_fbdev.c @@ -8,6 +8,7 @@ #include <drm/drm_crtc.h> #include <drm/drm_fb_helper.h> #include <drm/drm_fourcc.h> +#include <drm/drm_prime.h>
#include "msm_drv.h" #include "msm_gem.h" @@ -48,15 +49,8 @@ static int msm_fbdev_mmap(struct fb_info *info, struct vm_area_struct *vma) struct drm_fb_helper *helper = (struct drm_fb_helper *)info->par; struct msm_fbdev *fbdev = to_msm_fbdev(helper); struct drm_gem_object *bo = msm_framebuffer_bo(fbdev->fb, 0); - int ret = 0;
- ret = drm_gem_mmap_obj(bo, bo->size, vma); - if (ret) { - pr_err("%s:drm_gem_mmap_obj fail\n", __func__); - return ret; - } - - return msm_gem_mmap_obj(bo, vma); + return drm_gem_prime_mmap(bo, vma); }
static int msm_fbdev_create(struct drm_fb_helper *helper, diff --git a/drivers/gpu/drm/msm/msm_gem.c b/drivers/gpu/drm/msm/msm_gem.c index a94a43de95ef..09fd1a990b3c 100644 --- a/drivers/gpu/drm/msm/msm_gem.c +++ b/drivers/gpu/drm/msm/msm_gem.c @@ -211,46 +211,6 @@ void msm_gem_put_pages(struct drm_gem_object *obj) msm_gem_unlock(obj); }
-int msm_gem_mmap_obj(struct drm_gem_object *obj, - struct vm_area_struct *vma) -{ - struct msm_gem_object *msm_obj = to_msm_bo(obj); - - vma->vm_flags &= ~VM_PFNMAP; - vma->vm_flags |= VM_MIXEDMAP; - - if (msm_obj->flags & MSM_BO_WC) { - vma->vm_page_prot = pgprot_writecombine(vm_get_page_prot(vma->vm_flags)); - } else if (msm_obj->flags & MSM_BO_UNCACHED) { - vma->vm_page_prot = pgprot_noncached(vm_get_page_prot(vma->vm_flags)); - } else { - /* - * Shunt off cached objs to shmem file so they have their own - * address_space (so unmap_mapping_range does what we want, - * in particular in the case of mmap'd dmabufs) - */ - vma->vm_pgoff = 0; - vma_set_file(vma, obj->filp); - - vma->vm_page_prot = vm_get_page_prot(vma->vm_flags); - } - - return 0; -} - -int msm_gem_mmap(struct file *filp, struct vm_area_struct *vma) -{ - int ret; - - ret = drm_gem_mmap(filp, vma); - if (ret) { - DBG("mmap failed: %d", ret); - return ret; - } - - return msm_gem_mmap_obj(vma->vm_private_data, vma); -} - static vm_fault_t msm_gem_fault(struct vm_fault *vmf) { struct vm_area_struct *vma = vmf->vma; @@ -1119,6 +1079,32 @@ void msm_gem_free_object(struct drm_gem_object *obj) kfree(msm_obj); }
+static int msm_gem_object_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma) +{ + struct msm_gem_object *msm_obj = to_msm_bo(obj); + + vma->vm_flags &= ~VM_PFNMAP; + vma->vm_flags |= VM_MIXEDMAP; + + if (msm_obj->flags & MSM_BO_WC) { + vma->vm_page_prot = pgprot_writecombine(vm_get_page_prot(vma->vm_flags)); + } else if (msm_obj->flags & MSM_BO_UNCACHED) { + vma->vm_page_prot = pgprot_noncached(vm_get_page_prot(vma->vm_flags)); + } else { + /* + * Shunt off cached objs to shmem file so they have their own + * address_space (so unmap_mapping_range does what we want, + * in particular in the case of mmap'd dmabufs) + */ + vma->vm_pgoff = 0; + vma_set_file(vma, obj->filp); + + vma->vm_page_prot = vm_get_page_prot(vma->vm_flags); + } + + return 0; +} + /* convenience method to construct a GEM buffer object, and userspace handle */ int msm_gem_new_handle(struct drm_device *dev, struct drm_file *file, uint32_t size, uint32_t flags, uint32_t *handle, @@ -1156,6 +1142,7 @@ static const struct drm_gem_object_funcs msm_gem_object_funcs = { .get_sg_table = msm_gem_prime_get_sg_table, .vmap = msm_gem_prime_vmap, .vunmap = msm_gem_prime_vunmap, + .mmap = msm_gem_object_mmap, .vm_ops = &vm_ops, };
diff --git a/drivers/gpu/drm/msm/msm_gem.h b/drivers/gpu/drm/msm/msm_gem.h index 03e2cc2a2ce1..8508163088a9 100644 --- a/drivers/gpu/drm/msm/msm_gem.h +++ b/drivers/gpu/drm/msm/msm_gem.h @@ -112,9 +112,6 @@ struct msm_gem_object { }; #define to_msm_bo(x) container_of(x, struct msm_gem_object, base)
-int msm_gem_mmap_obj(struct drm_gem_object *obj, - struct vm_area_struct *vma); -int msm_gem_mmap(struct file *filp, struct vm_area_struct *vma); uint64_t msm_gem_mmap_offset(struct drm_gem_object *obj); int msm_gem_get_iova(struct drm_gem_object *obj, struct msm_gem_address_space *aspace, uint64_t *iova); diff --git a/drivers/gpu/drm/msm/msm_gem_prime.c b/drivers/gpu/drm/msm/msm_gem_prime.c index 9880348a4dc7..fc94e061d6a7 100644 --- a/drivers/gpu/drm/msm/msm_gem_prime.c +++ b/drivers/gpu/drm/msm/msm_gem_prime.c @@ -39,17 +39,6 @@ void msm_gem_prime_vunmap(struct drm_gem_object *obj, struct dma_buf_map *map) msm_gem_put_vaddr(obj); }
-int msm_gem_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma) -{ - int ret; - - ret = drm_gem_mmap_obj(obj, obj->size, vma); - if (ret < 0) - return ret; - - return msm_gem_mmap_obj(vma->vm_private_data, vma); -} - struct drm_gem_object *msm_gem_prime_import_sg_table(struct drm_device *dev, struct dma_buf_attachment *attach, struct sg_table *sg) {