1 /*
2 * Copyright (C) 2012-2018 Rob Clark <robclark@freedesktop.org>
3 *
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:
10 *
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
13 * Software.
14 *
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 FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 * SOFTWARE.
22 *
23 * Authors:
24 * Rob Clark <robclark@freedesktop.org>
25 */
26
27 #include "msm_priv.h"
28
bo_allocate(struct msm_bo * msm_bo)29 static int bo_allocate(struct msm_bo *msm_bo)
30 {
31 struct fd_bo *bo = &msm_bo->base;
32 if (!msm_bo->offset) {
33 struct drm_msm_gem_info req = {
34 .handle = bo->handle,
35 .info = MSM_INFO_GET_OFFSET,
36 };
37 int ret;
38
39 /* if the buffer is already backed by pages then this
40 * doesn't actually do anything (other than giving us
41 * the offset)
42 */
43 ret = drmCommandWriteRead(bo->dev->fd, DRM_MSM_GEM_INFO,
44 &req, sizeof(req));
45 if (ret) {
46 ERROR_MSG("alloc failed: %s", strerror(errno));
47 return ret;
48 }
49
50 msm_bo->offset = req.value;
51 }
52
53 return 0;
54 }
55
msm_bo_offset(struct fd_bo * bo,uint64_t * offset)56 static int msm_bo_offset(struct fd_bo *bo, uint64_t *offset)
57 {
58 struct msm_bo *msm_bo = to_msm_bo(bo);
59 int ret = bo_allocate(msm_bo);
60 if (ret)
61 return ret;
62 *offset = msm_bo->offset;
63 return 0;
64 }
65
msm_bo_cpu_prep(struct fd_bo * bo,struct fd_pipe * pipe,uint32_t op)66 static int msm_bo_cpu_prep(struct fd_bo *bo, struct fd_pipe *pipe, uint32_t op)
67 {
68 struct drm_msm_gem_cpu_prep req = {
69 .handle = bo->handle,
70 .op = op,
71 };
72
73 get_abs_timeout(&req.timeout, 5000000000);
74
75 return drmCommandWrite(bo->dev->fd, DRM_MSM_GEM_CPU_PREP, &req, sizeof(req));
76 }
77
msm_bo_cpu_fini(struct fd_bo * bo)78 static void msm_bo_cpu_fini(struct fd_bo *bo)
79 {
80 struct drm_msm_gem_cpu_fini req = {
81 .handle = bo->handle,
82 };
83
84 drmCommandWrite(bo->dev->fd, DRM_MSM_GEM_CPU_FINI, &req, sizeof(req));
85 }
86
msm_bo_madvise(struct fd_bo * bo,int willneed)87 static int msm_bo_madvise(struct fd_bo *bo, int willneed)
88 {
89 struct drm_msm_gem_madvise req = {
90 .handle = bo->handle,
91 .madv = willneed ? MSM_MADV_WILLNEED : MSM_MADV_DONTNEED,
92 };
93 int ret;
94
95 /* older kernels do not support this: */
96 if (bo->dev->version < FD_VERSION_MADVISE)
97 return willneed;
98
99 ret = drmCommandWriteRead(bo->dev->fd, DRM_MSM_GEM_MADVISE, &req, sizeof(req));
100 if (ret)
101 return ret;
102
103 return req.retained;
104 }
105
msm_bo_iova(struct fd_bo * bo)106 static uint64_t msm_bo_iova(struct fd_bo *bo)
107 {
108 struct drm_msm_gem_info req = {
109 .handle = bo->handle,
110 .info = MSM_INFO_GET_IOVA,
111 };
112 int ret;
113
114 ret = drmCommandWriteRead(bo->dev->fd, DRM_MSM_GEM_INFO, &req, sizeof(req));
115 if (ret)
116 return 0;
117
118 return req.value;
119 }
120
msm_bo_set_name(struct fd_bo * bo,const char * fmt,va_list ap)121 static void msm_bo_set_name(struct fd_bo *bo, const char *fmt, va_list ap)
122 {
123 struct drm_msm_gem_info req = {
124 .handle = bo->handle,
125 .info = MSM_INFO_SET_NAME,
126 };
127 char buf[32];
128 int sz;
129
130 if (bo->dev->version < FD_VERSION_SOFTPIN)
131 return;
132
133 sz = vsnprintf(buf, sizeof(buf), fmt, ap);
134
135 req.value = VOID2U64(buf);
136 req.len = MIN2(sz, sizeof(buf));
137
138 drmCommandWrite(bo->dev->fd, DRM_MSM_GEM_INFO, &req, sizeof(req));
139 }
140
msm_bo_destroy(struct fd_bo * bo)141 static void msm_bo_destroy(struct fd_bo *bo)
142 {
143 struct msm_bo *msm_bo = to_msm_bo(bo);
144 free(msm_bo);
145 }
146
147 static const struct fd_bo_funcs funcs = {
148 .offset = msm_bo_offset,
149 .cpu_prep = msm_bo_cpu_prep,
150 .cpu_fini = msm_bo_cpu_fini,
151 .madvise = msm_bo_madvise,
152 .iova = msm_bo_iova,
153 .set_name = msm_bo_set_name,
154 .destroy = msm_bo_destroy,
155 };
156
157 /* allocate a buffer handle: */
msm_bo_new_handle(struct fd_device * dev,uint32_t size,uint32_t flags,uint32_t * handle)158 int msm_bo_new_handle(struct fd_device *dev,
159 uint32_t size, uint32_t flags, uint32_t *handle)
160 {
161 struct drm_msm_gem_new req = {
162 .size = size,
163 .flags = MSM_BO_WC, // TODO figure out proper flags..
164 };
165 int ret;
166
167 if (flags & DRM_FREEDRENO_GEM_SCANOUT)
168 req.flags |= MSM_BO_SCANOUT;
169
170 if (flags & DRM_FREEDRENO_GEM_GPUREADONLY)
171 req.flags |= MSM_BO_GPU_READONLY;
172
173 ret = drmCommandWriteRead(dev->fd, DRM_MSM_GEM_NEW,
174 &req, sizeof(req));
175 if (ret)
176 return ret;
177
178 *handle = req.handle;
179
180 return 0;
181 }
182
183 /* allocate a new buffer object */
msm_bo_from_handle(struct fd_device * dev,uint32_t size,uint32_t handle)184 struct fd_bo * msm_bo_from_handle(struct fd_device *dev,
185 uint32_t size, uint32_t handle)
186 {
187 struct msm_bo *msm_bo;
188 struct fd_bo *bo;
189
190 msm_bo = calloc(1, sizeof(*msm_bo));
191 if (!msm_bo)
192 return NULL;
193
194 bo = &msm_bo->base;
195 bo->funcs = &funcs;
196
197 return bo;
198 }
199