From 63bc620b45af8c743ac291c8725933278c712692 Mon Sep 17 00:00:00 2001 From: Dave Airlie Date: Thu, 31 May 2012 13:52:53 +0100 Subject: radeon: add radeon prime vmap support. This is the same as the nouveau code pretty much. Signed-off-by: Dave Airlie --- drivers/gpu/drm/radeon/radeon_prime.c | 38 +++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) (limited to 'drivers/gpu/drm/radeon/radeon_prime.c') diff --git a/drivers/gpu/drm/radeon/radeon_prime.c b/drivers/gpu/drm/radeon/radeon_prime.c index 37ff6bf..8ddab4c7 100644 --- a/drivers/gpu/drm/radeon/radeon_prime.c +++ b/drivers/gpu/drm/radeon/radeon_prime.c @@ -90,6 +90,42 @@ static int radeon_gem_prime_mmap(struct dma_buf *dma_buf, struct vm_area_struct return -EINVAL; } +static void *radeon_gem_prime_vmap(struct dma_buf *dma_buf) +{ + struct radeon_bo *bo = dma_buf->priv; + struct drm_device *dev = bo->rdev->ddev; + int ret; + + mutex_lock(&dev->struct_mutex); + if (bo->vmapping_count) { + bo->vmapping_count++; + goto out_unlock; + } + + ret = ttm_bo_kmap(&bo->tbo, 0, bo->tbo.num_pages, + &bo->dma_buf_vmap); + if (ret) { + mutex_unlock(&dev->struct_mutex); + return ERR_PTR(ret); + } + bo->vmapping_count = 1; +out_unlock: + mutex_unlock(&dev->struct_mutex); + return bo->dma_buf_vmap.virtual; +} + +static void radeon_gem_prime_vunmap(struct dma_buf *dma_buf, void *vaddr) +{ + struct radeon_bo *bo = dma_buf->priv; + struct drm_device *dev = bo->rdev->ddev; + + mutex_lock(&dev->struct_mutex); + bo->vmapping_count--; + if (bo->vmapping_count == 0) { + ttm_bo_kunmap(&bo->dma_buf_vmap); + } + mutex_unlock(&dev->struct_mutex); +} const static struct dma_buf_ops radeon_dmabuf_ops = { .map_dma_buf = radeon_gem_map_dma_buf, .unmap_dma_buf = radeon_gem_unmap_dma_buf, @@ -99,6 +135,8 @@ const static struct dma_buf_ops radeon_dmabuf_ops = { .kunmap = radeon_gem_kunmap, .kunmap_atomic = radeon_gem_kunmap_atomic, .mmap = radeon_gem_prime_mmap, + .vmap = radeon_gem_prime_vmap, + .vunmap = radeon_gem_prime_vunmap, }; static int radeon_prime_create(struct drm_device *dev, -- cgit v1.1