1 /* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
4 * Copyright (C) 2013 Rob Clark <robclark@freedesktop.org>
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:
13 * The above copyright notice and this permission notice (including the next
14 * paragraph) shall be included in all copies or substantial portions of the
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
26 * Rob Clark <robclark@freedesktop.org>
35 static int bo_allocate(struct msm_bo *msm_bo)
37 struct fd_bo *bo = &msm_bo->base;
38 if (!msm_bo->offset) {
39 struct drm_msm_gem_info req = {
44 /* if the buffer is already backed by pages then this
45 * doesn't actually do anything (other than giving us
48 ret = drmCommandWriteRead(bo->dev->fd, DRM_MSM_GEM_INFO,
51 ERROR_MSG("alloc failed: %s", strerror(errno));
55 msm_bo->offset = req.offset;
61 static int msm_bo_offset(struct fd_bo *bo, uint64_t *offset)
63 struct msm_bo *msm_bo = to_msm_bo(bo);
64 int ret = bo_allocate(msm_bo);
67 *offset = msm_bo->offset;
71 static int msm_bo_cpu_prep(struct fd_bo *bo, struct fd_pipe *pipe, uint32_t op)
73 struct drm_msm_gem_cpu_prep req = {
78 get_abs_timeout(&req.timeout, 5000);
80 return drmCommandWrite(bo->dev->fd, DRM_MSM_GEM_CPU_PREP, &req, sizeof(req));
83 static void msm_bo_cpu_fini(struct fd_bo *bo)
85 struct drm_msm_gem_cpu_fini req = {
89 drmCommandWrite(bo->dev->fd, DRM_MSM_GEM_CPU_FINI, &req, sizeof(req));
92 static void msm_bo_destroy(struct fd_bo *bo)
94 struct msm_bo *msm_bo = to_msm_bo(bo);
99 static struct fd_bo_funcs funcs = {
100 .offset = msm_bo_offset,
101 .cpu_prep = msm_bo_cpu_prep,
102 .cpu_fini = msm_bo_cpu_fini,
103 .destroy = msm_bo_destroy,
106 /* allocate a buffer handle: */
107 drm_private int msm_bo_new_handle(struct fd_device *dev,
108 uint32_t size, uint32_t flags, uint32_t *handle)
110 struct drm_msm_gem_new req = {
112 .flags = MSM_BO_WC, // TODO figure out proper flags..
116 ret = drmCommandWriteRead(dev->fd, DRM_MSM_GEM_NEW,
121 *handle = req.handle;
126 /* allocate a new buffer object */
127 drm_private struct fd_bo * msm_bo_from_handle(struct fd_device *dev,
128 uint32_t size, uint32_t handle)
130 struct msm_bo *msm_bo;
133 msm_bo = calloc(1, sizeof(*msm_bo));