2 * Copyright © 2011 Red Hat
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
24 * Jerome Glisse <j.glisse@gmail.com>
26 #define _FILE_OFFSET_BITS 64
33 #include "radeon_drm.h"
36 struct rbo *rbo(int fd, unsigned handle, unsigned size,
37 unsigned alignment, void *ptr)
42 bo = calloc(1, sizeof(*bo));
46 list_inithead(&bo->list);
51 bo->alignment = alignment;
54 struct drm_gem_open open_arg;
56 memset(&open_arg, 0, sizeof(open_arg));
57 open_arg.name = handle;
58 r = drmIoctl(fd, DRM_IOCTL_GEM_OPEN, &open_arg);
63 bo->handle = open_arg.handle;
65 struct drm_radeon_gem_create args;
68 args.alignment = alignment;
69 args.initial_domain = RADEON_GEM_DOMAIN_CPU;
72 r = drmCommandWriteRead(fd, DRM_RADEON_GEM_CREATE,
74 bo->handle = args.handle;
76 fprintf(stderr, "Failed to allocate :\n");
77 fprintf(stderr, " size : %d bytes\n", size);
78 fprintf(stderr, " alignment : %d bytes\n", alignment);
85 fprintf(stderr, "%s failed to copy data into bo\n", __func__);
86 return rbo_decref(bo);
88 memcpy(bo->data, ptr, size);
94 int rbo_map(struct rbo *bo)
96 struct drm_radeon_gem_mmap args;
100 if (bo->mapcount++ != 0) {
103 /* Zero out args to make valgrind happy */
104 memset(&args, 0, sizeof(args));
105 args.handle = bo->handle;
107 args.size = (uint64_t)bo->size;
108 r = drmCommandWriteRead(bo->fd, DRM_RADEON_GEM_MMAP,
109 &args, sizeof(args));
111 fprintf(stderr, "error mapping %p 0x%08X (error = %d)\n",
115 ptr = mmap(0, args.size, PROT_READ|PROT_WRITE, MAP_SHARED, bo->fd, args.addr_ptr);
116 if (ptr == MAP_FAILED) {
117 fprintf(stderr, "%s failed to map bo\n", __func__);
124 void rbo_unmap(struct rbo *bo)
126 if (--bo->mapcount > 0) {
129 munmap(bo->data, bo->size);
133 struct rbo *rbo_incref(struct rbo *bo)
139 struct rbo *rbo_decref(struct rbo *bo)
141 struct drm_gem_close args;
145 if (--bo->refcount > 0) {
149 munmap(bo->data, bo->size);
150 memset(&args, 0, sizeof(args));
151 args.handle = bo->handle;
152 drmIoctl(bo->fd, DRM_IOCTL_GEM_CLOSE, &args);
153 memset(bo, 0, sizeof(struct rbo));
158 int rbo_wait(struct rbo *bo)
160 struct drm_radeon_gem_wait_idle args;
163 /* Zero out args to make valgrind happy */
164 memset(&args, 0, sizeof(args));
165 args.handle = bo->handle;
167 ret = drmCommandWriteRead(bo->fd, DRM_RADEON_GEM_WAIT_IDLE,
168 &args, sizeof(args));
169 } while (ret == -EBUSY);