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
29static int
30bo_allocate(struct msm_bo *msm_bo)
31{
32   struct fd_bo *bo = &msm_bo->base;
33   if (!msm_bo->offset) {
34      struct drm_msm_gem_info req = {
35         .handle = bo->handle,
36         .info = MSM_INFO_GET_OFFSET,
37      };
38      int ret;
39
40      /* if the buffer is already backed by pages then this
41       * doesn't actually do anything (other than giving us
42       * the offset)
43       */
44      ret =
45         drmCommandWriteRead(bo->dev->fd, DRM_MSM_GEM_INFO, &req, sizeof(req));
46      if (ret) {
47         ERROR_MSG("alloc failed: %s", strerror(errno));
48         return ret;
49      }
50
51      msm_bo->offset = req.value;
52   }
53
54   return 0;
55}
56
57static int
58msm_bo_offset(struct fd_bo *bo, uint64_t *offset)
59{
60   struct msm_bo *msm_bo = to_msm_bo(bo);
61   int ret = bo_allocate(msm_bo);
62   if (ret)
63      return ret;
64   *offset = msm_bo->offset;
65   return 0;
66}
67
68static int
69msm_bo_cpu_prep(struct fd_bo *bo, struct fd_pipe *pipe, uint32_t op)
70{
71   struct drm_msm_gem_cpu_prep req = {
72      .handle = bo->handle,
73      .op = op,
74   };
75
76   get_abs_timeout(&req.timeout, 5000000000);
77
78   return drmCommandWrite(bo->dev->fd, DRM_MSM_GEM_CPU_PREP, &req, sizeof(req));
79}
80
81static void
82msm_bo_cpu_fini(struct fd_bo *bo)
83{
84   struct drm_msm_gem_cpu_fini req = {
85      .handle = bo->handle,
86   };
87
88   drmCommandWrite(bo->dev->fd, DRM_MSM_GEM_CPU_FINI, &req, sizeof(req));
89}
90
91static int
92msm_bo_madvise(struct fd_bo *bo, int willneed)
93{
94   struct drm_msm_gem_madvise req = {
95      .handle = bo->handle,
96      .madv = willneed ? MSM_MADV_WILLNEED : MSM_MADV_DONTNEED,
97   };
98   int ret;
99
100   /* older kernels do not support this: */
101   if (bo->dev->version < FD_VERSION_MADVISE)
102      return willneed;
103
104   ret =
105      drmCommandWriteRead(bo->dev->fd, DRM_MSM_GEM_MADVISE, &req, sizeof(req));
106   if (ret)
107      return ret;
108
109   return req.retained;
110}
111
112static uint64_t
113msm_bo_iova(struct fd_bo *bo)
114{
115   struct drm_msm_gem_info req = {
116      .handle = bo->handle,
117      .info = MSM_INFO_GET_IOVA,
118   };
119   int ret;
120
121   ret = drmCommandWriteRead(bo->dev->fd, DRM_MSM_GEM_INFO, &req, sizeof(req));
122   if (ret)
123      return 0;
124
125   return req.value;
126}
127
128static void
129msm_bo_set_name(struct fd_bo *bo, const char *fmt, va_list ap)
130{
131   struct drm_msm_gem_info req = {
132      .handle = bo->handle,
133      .info = MSM_INFO_SET_NAME,
134   };
135   char buf[32];
136   int sz;
137
138   if (bo->dev->version < FD_VERSION_SOFTPIN)
139      return;
140
141   sz = vsnprintf(buf, sizeof(buf), fmt, ap);
142
143   req.value = VOID2U64(buf);
144   req.len = MIN2(sz, sizeof(buf));
145
146   drmCommandWrite(bo->dev->fd, DRM_MSM_GEM_INFO, &req, sizeof(req));
147}
148
149static void
150msm_bo_destroy(struct fd_bo *bo)
151{
152   struct msm_bo *msm_bo = to_msm_bo(bo);
153   free(msm_bo);
154}
155
156static const struct fd_bo_funcs funcs = {
157   .offset = msm_bo_offset,
158   .cpu_prep = msm_bo_cpu_prep,
159   .cpu_fini = msm_bo_cpu_fini,
160   .madvise = msm_bo_madvise,
161   .iova = msm_bo_iova,
162   .set_name = msm_bo_set_name,
163   .destroy = msm_bo_destroy,
164};
165
166/* allocate a buffer handle: */
167int
168msm_bo_new_handle(struct fd_device *dev, uint32_t size, uint32_t flags,
169                  uint32_t *handle)
170{
171   struct drm_msm_gem_new req = {
172      .size = size,
173   };
174   int ret;
175
176   if (flags & FD_BO_SCANOUT)
177      req.flags |= MSM_BO_SCANOUT;
178
179   if (flags & FD_BO_GPUREADONLY)
180      req.flags |= MSM_BO_GPU_READONLY;
181
182   if (flags & FD_BO_CACHED_COHERENT)
183      req.flags |= MSM_BO_CACHED_COHERENT;
184   else
185      req.flags |= MSM_BO_WC;
186
187   ret = drmCommandWriteRead(dev->fd, DRM_MSM_GEM_NEW, &req, sizeof(req));
188   if (ret)
189      return ret;
190
191   *handle = req.handle;
192
193   return 0;
194}
195
196/* allocate a new buffer object */
197struct fd_bo *
198msm_bo_from_handle(struct fd_device *dev, uint32_t size, uint32_t handle)
199{
200   struct msm_bo *msm_bo;
201   struct fd_bo *bo;
202
203   msm_bo = calloc(1, sizeof(*msm_bo));
204   if (!msm_bo)
205      return NULL;
206
207   bo = &msm_bo->base;
208   bo->funcs = &funcs;
209
210   return bo;
211}
212