/*
* drm_gem_cma_create_with_handle - allocate an object with the given
* size and create a gem handle on it
*
* returns a struct drm_gem_cma_object* on success or ERR_PTR values
* on failure.
*/
static struct drm_gem_cma_object *drm_gem_cma_create_with_handle(
struct drm_file *file_priv,
struct drm_device *drm, unsigned int size,
unsigned int *handle)
{
struct drm_gem_cma_object *cma_obj;
struct drm_gem_object *gem_obj;
int ret;
cma_obj = drm_gem_cma_create(drm, size);
if (IS_ERR(cma_obj))
return cma_obj;
gem_obj = &cma_obj->base;
/*
* allocate a id of idr table where the obj is registered
* and handle has the id what user can see.
*/
ret = drm_gem_handle_create(file_priv, gem_obj, handle);
if (ret)
goto err_handle_create;
/* drop reference from allocate - handle holds it now. */
drm_gem_object_unreference_unlocked(gem_obj);
return cma_obj;
err_handle_create:
drm_gem_cma_free_object(gem_obj);
return ERR_PTR(ret);
}
/*
* drm_gem_cma_create - allocate an object with the given size
*
* returns a struct drm_gem_cma_object* on success or ERR_PTR values
* on failure.
*/
struct drm_gem_cma_object *drm_gem_cma_create(struct drm_device *drm,
unsigned int size)
{
struct drm_gem_cma_object *cma_obj;
int ret;
size = round_up(size, PAGE_SIZE);
cma_obj = __drm_gem_cma_create(drm, size);
if (IS_ERR(cma_obj))
return cma_obj;
cma_obj->vaddr = dma_alloc_writecombine(drm->dev, size,
&cma_obj->paddr, GFP_KERNEL | __GFP_NOWARN);
if (!cma_obj->vaddr) {
dev_err(drm->dev, "failed to allocate buffer with size %d\n",
size);
ret = -ENOMEM;
goto error;
}
return cma_obj;
error:
drm_gem_cma_free_object(&cma_obj->base);
return ERR_PTR(ret);
}
/**
* tinydrm_gem_cma_free_object - Free resources associated with a CMA GEM
* object
* @gem_obj: GEM object to free
*
* This function frees the backing memory of the CMA GEM object, cleans up the
* GEM object state and frees the memory used to store the object itself using
* drm_gem_cma_free_object(). It also handles PRIME buffers which has the kernel
* virtual address set by tinydrm_gem_cma_prime_import_sg_table(). Drivers
* can use this as their &drm_driver->gem_free_object callback.
*/
void tinydrm_gem_cma_free_object(struct drm_gem_object *gem_obj)
{
if (gem_obj->import_attach) {
struct drm_gem_cma_object *cma_obj;
cma_obj = to_drm_gem_cma_obj(gem_obj);
dma_buf_vunmap(gem_obj->import_attach->dmabuf, cma_obj->vaddr);
cma_obj->vaddr = NULL;
}
drm_gem_cma_free_object(gem_obj);
}
/* Must be called with bo_lock held. */
static void vc4_bo_destroy(struct vc4_bo *bo)
{
struct drm_gem_object *obj = &bo->base.base;
struct vc4_dev *vc4 = to_vc4_dev(obj->dev);
if (bo->validated_shader) {
kfree(bo->validated_shader->texture_samples);
kfree(bo->validated_shader);
bo->validated_shader = NULL;
}
vc4->bo_stats.num_allocated--;
vc4->bo_stats.size_allocated -= obj->size;
drm_gem_cma_free_object(obj);
}
/*
* drm_gem_cma_create - allocate an object with the given size
*
* returns a struct drm_gem_cma_object* on success or ERR_PTR values
* on failure.
*/
struct drm_gem_cma_object *drm_gem_cma_create(struct drm_device *drm,
unsigned int size)
{
struct drm_gem_cma_object *cma_obj;
struct sg_table *sgt = NULL;
int ret;
size = round_up(size, PAGE_SIZE);
cma_obj = __drm_gem_cma_create(drm, size);
if (IS_ERR(cma_obj))
return cma_obj;
cma_obj->vaddr = dma_alloc_writecombine(drm->dev, size,
&cma_obj->paddr, GFP_KERNEL | __GFP_NOWARN);
if (!cma_obj->vaddr) {
dev_err(drm->dev, "failed to allocate buffer with size %d\n",
size);
ret = -ENOMEM;
goto error;
}
sgt = kzalloc(sizeof(*cma_obj->sgt), GFP_KERNEL);
if (sgt == NULL) {
ret = -ENOMEM;
goto error;
}
ret = dma_get_sgtable(drm->dev, sgt, cma_obj->vaddr,
cma_obj->paddr, size);
if (ret < 0)
goto error;
cma_obj->sgt = sgt;
return cma_obj;
error:
kfree(sgt);
drm_gem_cma_free_object(&cma_obj->base);
return ERR_PTR(ret);
}
static int xylon_drm_gem_dumb_create(struct drm_file *file_priv,
struct drm_device *dev,
struct drm_mode_create_dumb *args)
{
struct drm_gem_cma_object *cma_obj;
struct drm_gem_object *gem_obj;
struct xylon_drm_device *xdev = dev->dev_private;
unsigned int buff_width;
int ret;
ret = xylon_drm_crtc_get_param(xdev->crtc, &buff_width,
XYLON_DRM_CRTC_BUFF_WIDTH);
if (ret)
return ret;
args->pitch = buff_width * DIV_ROUND_UP(args->bpp, 8);
args->size = (u64)(buff_width * DIV_ROUND_UP(args->bpp, 8) *
args->height);
cma_obj = drm_gem_cma_create(dev, (unsigned int)args->size);
if (IS_ERR(cma_obj))
return PTR_ERR(cma_obj);
gem_obj = &cma_obj->base;
ret = drm_gem_handle_create(file_priv, gem_obj, &args->handle);
if (ret)
goto err_handle_create;
drm_gem_object_unreference_unlocked(gem_obj);
return PTR_ERR_OR_ZERO(cma_obj);
err_handle_create:
drm_gem_cma_free_object(gem_obj);
return ret;
}
static int hisi_drm_fbdev_probe(struct drm_fb_helper *helper,
struct drm_fb_helper_surface_size *sizes)
{
struct hisi_drm_fbdev *fbdev = to_hisi_drm_fbdev(helper);
struct drm_mode_fb_cmd2 mode_cmd = { 0 };
struct drm_device *dev = helper->dev;
struct drm_gem_cma_object *obj;
struct drm_framebuffer *fb;
unsigned int bytes_per_pixel;
unsigned long offset;
struct fb_info *fbi;
size_t size;
int ret;
/* TODO: Need to use ion heaps to create frame buffer?? */
DRM_DEBUG_DRIVER("surface width(%d), height(%d) and bpp(%d)\n",
sizes->surface_width, sizes->surface_height,
sizes->surface_bpp);
bytes_per_pixel = DIV_ROUND_UP(sizes->surface_bpp, 8);
sizes->surface_depth = PREFERRED_BPP;
mode_cmd.width = sizes->surface_width;
mode_cmd.height = sizes->surface_height * HISI_NUM_FRAMEBUFFERS;
mode_cmd.pitches[0] = sizes->surface_width * bytes_per_pixel;
mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
sizes->surface_depth);
size = roundup(mode_cmd.pitches[0] * mode_cmd.height, PAGE_SIZE);
obj = drm_gem_cma_create(dev, size);
if (IS_ERR(obj))
return -ENOMEM;
fbi = framebuffer_alloc(0, dev->dev);
if (!fbi) {
dev_err(dev->dev, "Failed to allocate framebuffer info.\n");
ret = -ENOMEM;
goto err_drm_gem_cma_free_object;
}
fbdev->fb = hisi_drm_fb_alloc(dev, &mode_cmd, &obj, 1, true);
if (IS_ERR(fbdev->fb)) {
dev_err(dev->dev, "Failed to allocate DRM framebuffer.\n");
ret = PTR_ERR(fbdev->fb);
goto err_framebuffer_release;
}
fb = &fbdev->fb->fb;
helper->fb = fb;
helper->fbdev = fbi;
fbi->par = helper;
fbi->flags = FBINFO_FLAG_DEFAULT;
fbi->fbops = &hisi_drm_fbdev_ops;
ret = fb_alloc_cmap(&fbi->cmap, 256, 0);
if (ret) {
dev_err(dev->dev, "Failed to allocate color map.\n");
goto err_hisi_drm_fb_destroy;
}
drm_fb_helper_fill_fix(fbi, fb->pitches[0], fb->depth);
drm_fb_helper_fill_var(fbi, helper, fb->width,
fb->height/HISI_NUM_FRAMEBUFFERS);
offset = fbi->var.xoffset * bytes_per_pixel;
offset += fbi->var.yoffset * fb->pitches[0];
dev->mode_config.fb_base = (resource_size_t)obj->paddr;
fbi->screen_base = obj->vaddr + offset;
fbi->fix.smem_start = (unsigned long)(obj->paddr + offset);
fbi->screen_size = size;
fbi->fix.smem_len = size;
DRM_DEBUG_DRIVER("exit successfully.\n");
return 0;
err_hisi_drm_fb_destroy:
drm_framebuffer_unregister_private(fb);
hisi_drm_fb_destroy(fb);
err_framebuffer_release:
framebuffer_release(fbi);
err_drm_gem_cma_free_object:
drm_gem_cma_free_object(&obj->base);
return ret;
}
