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      1 /*	$NetBSD: qxl_dumb.c,v 1.3 2021/12/18 23:45:42 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright 2013 Red Hat Inc.
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the "Software"),
      8  * to deal in the Software without restriction, including without limitation
      9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     10  * and/or sell copies of the Software, and to permit persons to whom the
     11  * Software is furnished to do so, subject to the following conditions:
     12  *
     13  * The above copyright notice and this permission notice shall be included in
     14  * all copies or substantial portions of the Software.
     15  *
     16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     19  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
     20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
     22  * OTHER DEALINGS IN THE SOFTWARE.
     23  *
     24  * Authors: Dave Airlie
     25  *          Alon Levy
     26  */
     27 
     28 #include <sys/cdefs.h>
     29 __KERNEL_RCSID(0, "$NetBSD: qxl_dumb.c,v 1.3 2021/12/18 23:45:42 riastradh Exp $");
     30 
     31 #include "qxl_drv.h"
     32 #include "qxl_object.h"
     33 
     34 /* dumb ioctls implementation */
     35 
     36 int qxl_mode_dumb_create(struct drm_file *file_priv,
     37 			    struct drm_device *dev,
     38 			    struct drm_mode_create_dumb *args)
     39 {
     40 	struct qxl_device *qdev = dev->dev_private;
     41 	struct qxl_bo *qobj;
     42 	uint32_t handle;
     43 	int r;
     44 	struct qxl_surface surf;
     45 	uint32_t pitch, format;
     46 
     47 	pitch = args->width * ((args->bpp + 1) / 8);
     48 	args->size = pitch * args->height;
     49 	args->size = ALIGN(args->size, PAGE_SIZE);
     50 
     51 	switch (args->bpp) {
     52 	case 16:
     53 		format = SPICE_SURFACE_FMT_16_565;
     54 		break;
     55 	case 32:
     56 		format = SPICE_SURFACE_FMT_32_xRGB;
     57 		break;
     58 	default:
     59 		return -EINVAL;
     60 	}
     61 
     62 	surf.width = args->width;
     63 	surf.height = args->height;
     64 	surf.stride = pitch;
     65 	surf.format = format;
     66 	r = qxl_gem_object_create_with_handle(qdev, file_priv,
     67 					      QXL_GEM_DOMAIN_SURFACE,
     68 					      args->size, &surf, &qobj,
     69 					      &handle);
     70 	if (r)
     71 		return r;
     72 	qobj->is_dumb = true;
     73 	args->pitch = pitch;
     74 	args->handle = handle;
     75 	return 0;
     76 }
     77 
     78 int qxl_mode_dumb_mmap(struct drm_file *file_priv,
     79 		       struct drm_device *dev,
     80 		       uint32_t handle, uint64_t *offset_p)
     81 {
     82 	struct drm_gem_object *gobj;
     83 	struct qxl_bo *qobj;
     84 
     85 	BUG_ON(!offset_p);
     86 	gobj = drm_gem_object_lookup(file_priv, handle);
     87 	if (gobj == NULL)
     88 		return -ENOENT;
     89 	qobj = gem_to_qxl_bo(gobj);
     90 	*offset_p = qxl_bo_mmap_offset(qobj);
     91 	drm_gem_object_put_unlocked(gobj);
     92 	return 0;
     93 }
     94