1/**************************************************************************
2 *
3 * Copyright © 2009 VMware, Inc., Palo Alto, CA., USA
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
21 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
22 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
23 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
24 * USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28
29#ifdef HAVE_CONFIG_H
30#include "config.h"
31#endif
32
33#include <errno.h>
34#include <stdio.h>
35#include <stdlib.h>
36#include <string.h>
37#include "internal.h"
38
39#include <sys/ioctl.h>
40#include "xf86drm.h"
41#include "libdrm_macros.h"
42
43#include "nouveau_drm.h"
44
45struct nouveau_bo
46{
47	struct kms_bo base;
48	uint64_t map_handle;
49	unsigned map_count;
50};
51
52static int
53nouveau_get_prop(struct kms_driver *kms, unsigned key, unsigned *out)
54{
55	switch (key) {
56	case KMS_BO_TYPE:
57		*out = KMS_BO_TYPE_SCANOUT_X8R8G8B8 | KMS_BO_TYPE_CURSOR_64X64_A8R8G8B8;
58		break;
59	default:
60		return -EINVAL;
61	}
62	return 0;
63}
64
65static int
66nouveau_destroy(struct kms_driver *kms)
67{
68	free(kms);
69	return 0;
70}
71
72static int
73nouveau_bo_create(struct kms_driver *kms,
74		 const unsigned width, const unsigned height,
75		 const enum kms_bo_type type, const unsigned *attr,
76		 struct kms_bo **out)
77{
78	struct drm_nouveau_gem_new arg;
79	unsigned size, pitch;
80	struct nouveau_bo *bo;
81	int i, ret;
82
83	for (i = 0; attr[i]; i += 2) {
84		switch (attr[i]) {
85		case KMS_WIDTH:
86		case KMS_HEIGHT:
87		case KMS_BO_TYPE:
88			break;
89		default:
90			return -EINVAL;
91		}
92	}
93
94	bo = calloc(1, sizeof(*bo));
95	if (!bo)
96		return -ENOMEM;
97
98	if (type == KMS_BO_TYPE_CURSOR_64X64_A8R8G8B8) {
99		pitch = 64 * 4;
100		size = 64 * 64 * 4;
101	} else if (type == KMS_BO_TYPE_SCANOUT_X8R8G8B8) {
102		pitch = width * 4;
103		pitch = (pitch + 512 - 1) & ~(512 - 1);
104		size = pitch * height;
105	} else {
106		free(bo);
107		return -EINVAL;
108	}
109
110	memset(&arg, 0, sizeof(arg));
111	arg.info.size = size;
112	arg.info.domain = NOUVEAU_GEM_DOMAIN_MAPPABLE | NOUVEAU_GEM_DOMAIN_VRAM;
113	arg.info.tile_mode = 0;
114	arg.info.tile_flags = 0;
115	arg.align = 512;
116	arg.channel_hint = 0;
117
118	ret = drmCommandWriteRead(kms->fd, DRM_NOUVEAU_GEM_NEW, &arg, sizeof(arg));
119	if (ret)
120		goto err_free;
121
122	bo->base.kms = kms;
123	bo->base.handle = arg.info.handle;
124	bo->base.size = size;
125	bo->base.pitch = pitch;
126	bo->map_handle = arg.info.map_handle;
127
128	*out = &bo->base;
129
130	return 0;
131
132err_free:
133	free(bo);
134	return ret;
135}
136
137static int
138nouveau_bo_get_prop(struct kms_bo *bo, unsigned key, unsigned *out)
139{
140	switch (key) {
141	default:
142		return -EINVAL;
143	}
144}
145
146static int
147nouveau_bo_map(struct kms_bo *_bo, void **out)
148{
149	struct nouveau_bo *bo = (struct nouveau_bo *)_bo;
150	void *map = NULL;
151
152	if (bo->base.ptr) {
153		bo->map_count++;
154		*out = bo->base.ptr;
155		return 0;
156	}
157
158	map = drm_mmap(0, bo->base.size, PROT_READ | PROT_WRITE, MAP_SHARED, bo->base.kms->fd, bo->map_handle);
159	if (map == MAP_FAILED)
160		return -errno;
161
162	bo->base.ptr = map;
163	bo->map_count++;
164	*out = bo->base.ptr;
165
166	return 0;
167}
168
169static int
170nouveau_bo_unmap(struct kms_bo *_bo)
171{
172	struct nouveau_bo *bo = (struct nouveau_bo *)_bo;
173	bo->map_count--;
174	return 0;
175}
176
177static int
178nouveau_bo_destroy(struct kms_bo *_bo)
179{
180	struct nouveau_bo *bo = (struct nouveau_bo *)_bo;
181	struct drm_gem_close arg;
182	int ret;
183
184	if (bo->base.ptr) {
185		/* XXX Sanity check map_count */
186		drm_munmap(bo->base.ptr, bo->base.size);
187		bo->base.ptr = NULL;
188	}
189
190	memset(&arg, 0, sizeof(arg));
191	arg.handle = bo->base.handle;
192
193	ret = drmIoctl(bo->base.kms->fd, DRM_IOCTL_GEM_CLOSE, &arg);
194	if (ret)
195		return -errno;
196
197	free(bo);
198	return 0;
199}
200
201drm_private int
202nouveau_create(int fd, struct kms_driver **out)
203{
204	struct kms_driver *kms;
205
206	kms = calloc(1, sizeof(*kms));
207	if (!kms)
208		return -ENOMEM;
209
210	kms->fd = fd;
211
212	kms->bo_create = nouveau_bo_create;
213	kms->bo_map = nouveau_bo_map;
214	kms->bo_unmap = nouveau_bo_unmap;
215	kms->bo_get_prop = nouveau_bo_get_prop;
216	kms->bo_destroy = nouveau_bo_destroy;
217	kms->get_prop = nouveau_get_prop;
218	kms->destroy = nouveau_destroy;
219	*out = kms;
220
221	return 0;
222}
223