int tegra_bo_dumb_map_offset(struct drm_file *file, struct drm_device *drm,
uint32_t handle, uint64_t *offset)
{
struct drm_gem_object *gem;
struct tegra_bo *bo;
mutex_lock(&drm->struct_mutex);
gem = drm_gem_object_lookup(drm, file, handle);
if (!gem) {
dev_err(drm->dev, "failed to lookup GEM object\n");
mutex_unlock(&drm->struct_mutex);
return -EINVAL;
}
bo = to_tegra_bo(gem);
*offset = tegra_bo_get_mmap_offset(bo);
drm_gem_object_unreference(gem);
mutex_unlock(&drm->struct_mutex);
return 0;
}
static int tegra_bo_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
{
struct drm_gem_object *gem = vma->vm_private_data;
struct tegra_bo *bo = to_tegra_bo(gem);
struct page *page;
pgoff_t offset;
int err;
if (!bo->pages)
return VM_FAULT_SIGBUS;
offset = ((unsigned long)vmf->virtual_address - vma->vm_start) >> PAGE_SHIFT;
page = bo->pages[offset];
err = vm_insert_page(vma, (unsigned long)vmf->virtual_address, page);
switch (err) {
case -EAGAIN:
case 0:
case -ERESTARTSYS:
case -EINTR:
case -EBUSY:
return VM_FAULT_NOPAGE;
case -ENOMEM:
return VM_FAULT_OOM;
}
return VM_FAULT_SIGBUS;
}
static void *tegra_gem_prime_vmap(struct dma_buf *buf)
{
struct drm_gem_object *gem = buf->priv;
struct tegra_bo *bo = to_tegra_bo(gem);
return bo->vaddr;
}
void tegra_bo_free_object(struct drm_gem_object *gem)
{
struct tegra_bo *bo = to_tegra_bo(gem);
if (gem->map_list.map)
drm_gem_free_mmap_offset(gem);
drm_gem_object_release(gem);
tegra_bo_destroy(gem->dev, bo);
kfree(bo);
}
int tegra_uapi_gem_set_tiling(struct drm_device *drm, void *data,
struct drm_file *file)
{
struct drm_tegra_gem_set_tiling *args = data;
enum tegra_bo_tiling_mode mode;
struct drm_gem_object *gem;
unsigned long value = 0;
struct tegra_bo *bo;
switch (args->mode) {
case DRM_TEGRA_GEM_TILING_MODE_PITCH:
mode = TEGRA_BO_TILING_MODE_PITCH;
if (args->value != 0)
return -EINVAL;
break;
case DRM_TEGRA_GEM_TILING_MODE_TILED:
mode = TEGRA_BO_TILING_MODE_TILED;
if (args->value != 0)
return -EINVAL;
break;
case DRM_TEGRA_GEM_TILING_MODE_BLOCK:
mode = TEGRA_BO_TILING_MODE_BLOCK;
if (args->value > 5)
return -EINVAL;
value = args->value;
break;
default:
return -EINVAL;
}
gem = drm_gem_object_lookup(file, args->handle);
if (!gem)
return -ENOENT;
bo = to_tegra_bo(gem);
bo->tiling.mode = mode;
bo->tiling.value = value;
drm_gem_object_put_unlocked(gem);
return 0;
}
static void tegra_gem_prime_unmap_dma_buf(struct dma_buf_attachment *attach,
struct sg_table *sgt,
enum dma_data_direction dir)
{
struct drm_gem_object *gem = attach->dmabuf->priv;
struct tegra_bo *bo = to_tegra_bo(gem);
if (bo->pages)
dma_unmap_sg(attach->dev, sgt->sgl, sgt->nents, dir);
sg_free_table(sgt);
kfree(sgt);
}
struct drm_framebuffer *tegra_fb_create(struct drm_device *drm,
struct drm_file *file,
const struct drm_mode_fb_cmd2 *cmd)
{
unsigned int hsub, vsub, i;
struct tegra_bo *planes[4];
struct drm_gem_object *gem;
struct tegra_fb *fb;
int err;
hsub = drm_format_horz_chroma_subsampling(cmd->pixel_format);
vsub = drm_format_vert_chroma_subsampling(cmd->pixel_format);
for (i = 0; i < drm_format_num_planes(cmd->pixel_format); i++) {
unsigned int width = cmd->width / (i ? hsub : 1);
unsigned int height = cmd->height / (i ? vsub : 1);
unsigned int size, bpp;
gem = drm_gem_object_lookup(file, cmd->handles[i]);
if (!gem) {
err = -ENXIO;
goto unreference;
}
bpp = drm_format_plane_cpp(cmd->pixel_format, i);
size = (height - 1) * cmd->pitches[i] +
width * bpp + cmd->offsets[i];
if (gem->size < size) {
err = -EINVAL;
goto unreference;
}
planes[i] = to_tegra_bo(gem);
}
fb = tegra_fb_alloc(drm, cmd, planes, i);
if (IS_ERR(fb)) {
err = PTR_ERR(fb);
goto unreference;
}
return &fb->base;
unreference:
while (i--)
drm_gem_object_put_unlocked(&planes[i]->gem);
return ERR_PTR(err);
}
void tegra_bo_free_object(struct drm_gem_object *gem)
{
struct tegra_bo *bo = to_tegra_bo(gem);
if (gem->import_attach) {
dma_buf_unmap_attachment(gem->import_attach, bo->sgt,
DMA_TO_DEVICE);
drm_prime_gem_destroy(gem, NULL);
} else {
tegra_bo_destroy(gem->dev, bo);
}
drm_gem_free_mmap_offset(gem);
drm_gem_object_release(gem);
kfree(bo);
}
void tegra_bo_free_object(struct drm_gem_object *gem)
{
struct tegra_drm *tegra = gem->dev->dev_private;
struct tegra_bo *bo = to_tegra_bo(gem);
if (tegra->domain)
tegra_bo_iommu_unmap(tegra, bo);
if (gem->import_attach) {
dma_buf_unmap_attachment(gem->import_attach, bo->sgt,
DMA_TO_DEVICE);
drm_prime_gem_destroy(gem, NULL);
} else {
tegra_bo_free(gem->dev, bo);
}
drm_gem_object_release(gem);
kfree(bo);
}
int tegra_drm_mmap(struct file *file, struct vm_area_struct *vma)
{
struct drm_gem_object *gem;
struct tegra_bo *bo;
int ret;
ret = drm_gem_mmap(file, vma);
if (ret)
return ret;
gem = vma->vm_private_data;
bo = to_tegra_bo(gem);
ret = remap_pfn_range(vma, vma->vm_start, bo->paddr >> PAGE_SHIFT,
vma->vm_end - vma->vm_start, vma->vm_page_prot);
if (ret)
drm_gem_vm_close(vma);
return ret;
}
int tegra_bo_dumb_map_offset(struct drm_file *file, struct drm_device *drm,
u32 handle, u64 *offset)
{
struct drm_gem_object *gem;
struct tegra_bo *bo;
gem = drm_gem_object_lookup(drm, file, handle);
if (!gem) {
dev_err(drm->dev, "failed to lookup GEM object\n");
return -EINVAL;
}
bo = to_tegra_bo(gem);
*offset = drm_vma_node_offset_addr(&bo->gem.vma_node);
drm_gem_object_unreference_unlocked(gem);
return 0;
}
int tegra_uapi_gem_cpu_prep(struct drm_device *drm, void *data,
struct drm_file *file)
{
struct drm_tegra_gem_cpu_prep *args = data;
struct drm_gem_object *gem;
struct tegra_bo *bo;
unsigned long timeout;
bool write;
int ret;
gem = drm_gem_object_lookup(file, args->handle);
if (!gem) {
DRM_ERROR("failed to find bo handle %u\n", args->handle);
return -ENOENT;
}
bo = to_tegra_bo(gem);
write = !!(args->flags & DRM_TEGRA_CPU_PREP_WRITE);
timeout = usecs_to_jiffies(args->timeout);
ret = reservation_object_wait_timeout_rcu(bo->resv, write,
true, timeout);
drm_gem_object_put_unlocked(gem);
if (ret == 0) {
DRM_DEBUG_DRIVER("bo handle %u is busy\n", args->handle);
return timeout == 0 ? -EBUSY : -ETIMEDOUT;
}
if (ret < 0) {
DRM_ERROR("failed to await bo handle %u: %d\n",
args->handle, ret);
return ret;
}
DRM_DEBUG_DRIVER("bo handle %u is idling\n", args->handle);
return 0;
}
static struct sg_table *
tegra_gem_prime_map_dma_buf(struct dma_buf_attachment *attach,
enum dma_data_direction dir)
{
struct drm_gem_object *gem = attach->dmabuf->priv;
struct tegra_bo *bo = to_tegra_bo(gem);
struct sg_table *sgt;
sgt = kmalloc(sizeof(*sgt), GFP_KERNEL);
if (!sgt)
return NULL;
if (bo->pages) {
struct scatterlist *sg;
unsigned int i;
if (sg_alloc_table(sgt, bo->num_pages, GFP_KERNEL))
goto free;
for_each_sg(sgt->sgl, sg, bo->num_pages, i)
sg_set_page(sg, bo->pages[i], PAGE_SIZE, 0);
if (dma_map_sg(attach->dev, sgt->sgl, sgt->nents, dir) == 0)
goto free;
} else {
if (sg_alloc_table(sgt, 1, GFP_KERNEL))
goto free;
sg_dma_address(sgt->sgl) = bo->paddr;
sg_dma_len(sgt->sgl) = gem->size;
}
return sgt;
free:
sg_free_table(sgt);
kfree(sgt);
return NULL;
}
int tegra_uapi_gem_get_tiling(struct drm_device *drm, void *data,
struct drm_file *file)
{
struct drm_tegra_gem_get_tiling *args = data;
struct drm_gem_object *gem;
struct tegra_bo *bo;
int err = 0;
gem = drm_gem_object_lookup(file, args->handle);
if (!gem)
return -ENOENT;
bo = to_tegra_bo(gem);
switch (bo->tiling.mode) {
case TEGRA_BO_TILING_MODE_PITCH:
args->mode = DRM_TEGRA_GEM_TILING_MODE_PITCH;
args->value = 0;
break;
case TEGRA_BO_TILING_MODE_TILED:
args->mode = DRM_TEGRA_GEM_TILING_MODE_TILED;
args->value = 0;
break;
case TEGRA_BO_TILING_MODE_BLOCK:
args->mode = DRM_TEGRA_GEM_TILING_MODE_BLOCK;
args->value = bo->tiling.value;
break;
default:
err = -EINVAL;
break;
}
drm_gem_object_put_unlocked(gem);
return err;
}
static struct sg_table *
tegra_gem_prime_map_dma_buf(struct dma_buf_attachment *attach,
enum dma_data_direction dir)
{
struct drm_gem_object *gem = attach->dmabuf->priv;
struct tegra_bo *bo = to_tegra_bo(gem);
struct sg_table *sgt;
sgt = kmalloc(sizeof(*sgt), GFP_KERNEL);
if (!sgt)
return NULL;
if (sg_alloc_table(sgt, 1, GFP_KERNEL)) {
kfree(sgt);
return NULL;
}
sg_dma_address(sgt->sgl) = bo->paddr;
sg_dma_len(sgt->sgl) = gem->size;
return sgt;
}
int tegra_drm_mmap(struct file *file, struct vm_area_struct *vma)
{
struct drm_gem_object *gem;
struct tegra_bo *bo;
int ret;
ret = drm_gem_mmap(file, vma);
if (ret)
return ret;
gem = vma->vm_private_data;
bo = to_tegra_bo(gem);
if (!bo->pages) {
unsigned long vm_pgoff = vma->vm_pgoff;
vma->vm_flags &= ~VM_PFNMAP;
vma->vm_pgoff = 0;
ret = dma_mmap_writecombine(gem->dev->dev, vma, bo->vaddr,
bo->paddr, gem->size);
if (ret) {
drm_gem_vm_close(vma);
return ret;
}
vma->vm_pgoff = vm_pgoff;
} else {
pgprot_t prot = vm_get_page_prot(vma->vm_flags);
vma->vm_flags |= VM_MIXEDMAP;
vma->vm_flags &= ~VM_PFNMAP;
vma->vm_page_prot = pgprot_writecombine(prot);
}
return 0;
}
int tegra_uapi_gem_set_flags(struct drm_device *drm, void *data,
struct drm_file *file)
{
struct drm_tegra_gem_set_flags *args = data;
struct drm_gem_object *gem;
struct tegra_bo *bo;
if (args->flags & ~DRM_TEGRA_GEM_FLAGS)
return -EINVAL;
gem = drm_gem_object_lookup(file, args->handle);
if (!gem)
return -ENOENT;
bo = to_tegra_bo(gem);
bo->flags = 0;
if (args->flags & DRM_TEGRA_GEM_BOTTOM_UP)
bo->flags |= TEGRA_BO_BOTTOM_UP;
drm_gem_object_put_unlocked(gem);
return 0;
}
int tegra_uapi_gem_get_flags(struct drm_device *drm, void *data,
struct drm_file *file)
{
struct drm_tegra_gem_get_flags *args = data;
struct drm_gem_object *gem;
struct tegra_bo *bo;
gem = drm_gem_object_lookup(file, args->handle);
if (!gem)
return -ENOENT;
bo = to_tegra_bo(gem);
args->flags = 0;
if (bo->flags & TEGRA_BO_BOTTOM_UP)
args->flags |= DRM_TEGRA_GEM_BOTTOM_UP;
if (bo->sgt->nents > 1)
args->flags |= DRM_TEGRA_GEM_SPARSE;
drm_gem_object_put_unlocked(gem);
return 0;
}
struct tegra_bo *tegra_fb_get_plane(struct drm_framebuffer *framebuffer,
unsigned int index)
{
return to_tegra_bo(drm_gem_fb_get_obj(framebuffer, index));
}
