diff options
Diffstat (limited to 'drivers/gpu/drm/exynos/exynos_drm_gem.c')
| -rw-r--r-- | drivers/gpu/drm/exynos/exynos_drm_gem.c | 112 |
1 files changed, 38 insertions, 74 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_drm_gem.c b/drivers/gpu/drm/exynos/exynos_drm_gem.c index 0df57ee34144..b9b2f000072d 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_gem.c +++ b/drivers/gpu/drm/exynos/exynos_drm_gem.c @@ -7,16 +7,22 @@ #include <linux/dma-buf.h> -#include <linux/pfn_t.h> #include <linux/shmem_fs.h> +#include <linux/module.h> +#include <drm/drm_dumb_buffers.h> #include <drm/drm_prime.h> +#include <drm/drm_print.h> #include <drm/drm_vma_manager.h> #include <drm/exynos_drm.h> #include "exynos_drm_drv.h" #include "exynos_drm_gem.h" +MODULE_IMPORT_NS("DMA_BUF"); + +static int exynos_drm_gem_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma); + static int exynos_drm_alloc_buf(struct exynos_drm_gem *exynos_gem, bool kvmap) { struct drm_device *dev = exynos_gem->base.dev; @@ -42,8 +48,6 @@ static int exynos_drm_alloc_buf(struct exynos_drm_gem *exynos_gem, bool kvmap) if (exynos_gem->flags & EXYNOS_BO_WC || !(exynos_gem->flags & EXYNOS_BO_CACHABLE)) attr |= DMA_ATTR_WRITE_COMBINE; - else - attr |= DMA_ATTR_NON_CONSISTENT; /* FBDev emulation requires kernel mapping */ if (!kvmap) @@ -100,7 +104,7 @@ static int exynos_drm_gem_handle_create(struct drm_gem_object *obj, DRM_DEV_DEBUG_KMS(to_dma_dev(obj->dev), "gem handle = 0x%x\n", *handle); /* drop reference from allocate - handle holds it now. */ - drm_gem_object_put_unlocked(obj); + drm_gem_object_put(obj); return 0; } @@ -129,6 +133,18 @@ void exynos_drm_gem_destroy(struct exynos_drm_gem *exynos_gem) kfree(exynos_gem); } +static const struct vm_operations_struct exynos_drm_gem_vm_ops = { + .open = drm_gem_vm_open, + .close = drm_gem_vm_close, +}; + +static const struct drm_gem_object_funcs exynos_drm_gem_object_funcs = { + .free = exynos_drm_gem_free_object, + .get_sg_table = exynos_drm_gem_prime_get_sg_table, + .mmap = exynos_drm_gem_mmap, + .vm_ops = &exynos_drm_gem_vm_ops, +}; + static struct exynos_drm_gem *exynos_drm_gem_init(struct drm_device *dev, unsigned long size) { @@ -143,6 +159,8 @@ static struct exynos_drm_gem *exynos_drm_gem_init(struct drm_device *dev, exynos_gem->size = size; obj = &exynos_gem->base; + obj->funcs = &exynos_drm_gem_object_funcs; + ret = drm_gem_object_init(dev, obj, size); if (ret < 0) { DRM_DEV_ERROR(dev->dev, "failed to initialize gem object\n"); @@ -157,7 +175,7 @@ static struct exynos_drm_gem *exynos_drm_gem_init(struct drm_device *dev, return ERR_PTR(ret); } - DRM_DEV_DEBUG_KMS(dev->dev, "created file object = %pK\n", obj->filp); + DRM_DEV_DEBUG_KMS(dev->dev, "created file object = %p\n", obj->filp); return exynos_gem; } @@ -257,7 +275,7 @@ static int exynos_drm_gem_mmap_buffer(struct exynos_drm_gem *exynos_gem, unsigned long vm_size; int ret; - vma->vm_flags &= ~VM_PFNMAP; + vm_flags_clear(vma, VM_PFNMAP); vma->vm_pgoff = 0; vm_size = vma->vm_end - vma->vm_start; @@ -295,7 +313,7 @@ int exynos_drm_gem_get_ioctl(struct drm_device *dev, void *data, args->flags = exynos_gem->flags; args->size = exynos_gem->size; - drm_gem_object_put_unlocked(obj); + drm_gem_object_put(obj); return 0; } @@ -313,15 +331,16 @@ int exynos_drm_gem_dumb_create(struct drm_file *file_priv, unsigned int flags; int ret; + ret = drm_mode_size_dumb(dev, args, 0, 0); + if (ret) + return ret; + /* * allocate memory to be used for framebuffer. * - this callback would be called by user application * with DRM_IOCTL_MODE_CREATE_DUMB command. */ - args->pitch = args->width * ((args->bpp + 7) / 8); - args->size = args->pitch * args->height; - if (is_drm_iommu_supported(dev)) flags = EXYNOS_BO_NONCONTIG | EXYNOS_BO_WC; else @@ -343,12 +362,16 @@ int exynos_drm_gem_dumb_create(struct drm_file *file_priv, return 0; } -static int exynos_drm_gem_mmap_obj(struct drm_gem_object *obj, - struct vm_area_struct *vma) +static int exynos_drm_gem_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma) { struct exynos_drm_gem *exynos_gem = to_exynos_gem(obj); int ret; + if (obj->import_attach) + return dma_buf_mmap(obj->dma_buf, vma, 0); + + vm_flags_set(vma, VM_IO | VM_DONTEXPAND | VM_DONTDUMP); + DRM_DEV_DEBUG_KMS(to_dma_dev(obj->dev), "flags = 0x%x\n", exynos_gem->flags); @@ -374,26 +397,6 @@ err_close_vm: return ret; } -int exynos_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma) -{ - struct drm_gem_object *obj; - int ret; - - /* set vm_area_struct. */ - ret = drm_gem_mmap(filp, vma); - if (ret < 0) { - DRM_ERROR("failed to mmap.\n"); - return ret; - } - - obj = vma->vm_private_data; - - if (obj->import_attach) - return dma_buf_mmap(obj->dma_buf, vma, 0); - - return exynos_drm_gem_mmap_obj(obj, vma); -} - /* low-level interface prime helpers */ struct drm_gem_object *exynos_drm_gem_prime_import(struct drm_device *dev, struct dma_buf *dma_buf) @@ -431,27 +434,10 @@ exynos_drm_gem_prime_import_sg_table(struct drm_device *dev, { struct exynos_drm_gem *exynos_gem; - if (sgt->nents < 1) + /* check if the entries in the sg_table are contiguous */ + if (drm_prime_get_contiguous_size(sgt) < attach->dmabuf->size) { + DRM_ERROR("buffer chunks must be mapped contiguously"); return ERR_PTR(-EINVAL); - - /* - * Check if the provided buffer has been mapped as contiguous - * into DMA address space. - */ - if (sgt->nents > 1) { - dma_addr_t next_addr = sg_dma_address(sgt->sgl); - struct scatterlist *s; - unsigned int i; - - for_each_sg(sgt->sgl, s, sgt->nents, i) { - if (!sg_dma_len(s)) - break; - if (sg_dma_address(s) != next_addr) { - DRM_ERROR("buffer chunks must be mapped contiguously"); - return ERR_PTR(-EINVAL); - } - next_addr = sg_dma_address(s) + sg_dma_len(s); - } } exynos_gem = exynos_drm_gem_init(dev, attach->dmabuf->size); @@ -472,25 +458,3 @@ exynos_drm_gem_prime_import_sg_table(struct drm_device *dev, exynos_gem->sgt = sgt; return &exynos_gem->base; } - -void *exynos_drm_gem_prime_vmap(struct drm_gem_object *obj) -{ - return NULL; -} - -void exynos_drm_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr) -{ - /* Nothing to do */ -} - -int exynos_drm_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 exynos_drm_gem_mmap_obj(obj, vma); -} |