Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
drm/vmwgfx: Compute dumb-buffer sizes with drm_mode_size_dumb()
Call drm_mode_size_dumb() to compute dumb-buffer scanline pitch
and buffer size. No alignment required.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Zack Rusin <zack.rusin@broadcom.com>
Cc: Zack Rusin <zack.rusin@broadcom.com>
Cc: Broadcom internal kernel review list <bcm-kernel-feedback-list@broadcom.com>
Link: https://lore.kernel.org/r/20250821081918.79786-23-tzimmermann@suse.de
+4
-17
+4
-17
drivers/gpu/drm/vmwgfx/vmwgfx_surface.c
+4
-17
drivers/gpu/drm/vmwgfx/vmwgfx_surface.c
···
15
15
#include "vmw_surface_cache.h"
16
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#include "device_include/svga3d_surfacedefs.h"
17
17
18
+
#include <drm/drm_dumb_buffers.h>
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#include <drm/ttm/ttm_placement.h>
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#define SVGA3D_FLAGS_64(upper32, lower32) (((uint64_t)upper32 << 32) | lower32)
···
2268
2267
* contents is going to be rendered guest side.
2269
2268
*/
2270
2269
if (!dev_priv->has_mob || !vmw_supports_3d(dev_priv)) {
2271
-
int cpp = DIV_ROUND_UP(args->bpp, 8);
2272
-
2273
-
switch (cpp) {
2274
-
case 1: /* DRM_FORMAT_C8 */
2275
-
case 2: /* DRM_FORMAT_RGB565 */
2276
-
case 4: /* DRM_FORMAT_XRGB8888 */
2277
-
break;
2278
-
default:
2279
-
/*
2280
-
* Dumb buffers don't allow anything else.
2281
-
* This is tested via IGT's dumb_buffers
2282
-
*/
2283
-
return -EINVAL;
2284
-
}
2285
-
2286
-
args->pitch = args->width * cpp;
2287
-
args->size = ALIGN(args->pitch * args->height, PAGE_SIZE);
2270
+
ret = drm_mode_size_dumb(dev, args, 0, 0);
2271
+
if (ret)
2272
+
return ret;
2288
2273
2289
2274
ret = vmw_gem_object_create_with_handle(dev_priv, file_priv,
2290
2275
args->size, &args->handle,