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>
29 #include "kgsl_priv.h"
33 static int set_memtype(struct fd_device *dev, uint32_t handle, uint32_t flags)
35 struct drm_kgsl_gem_memtype req = {
37 .type = flags & DRM_FREEDRENO_GEM_TYPE_MEM_MASK,
40 return drmCommandWrite(dev->fd, DRM_KGSL_GEM_SETMEMTYPE,
44 static int bo_alloc(struct kgsl_bo *kgsl_bo)
46 struct fd_bo *bo = &kgsl_bo->base;
47 if (!kgsl_bo->offset) {
48 struct drm_kgsl_gem_alloc req = {
53 /* if the buffer is already backed by pages then this
54 * doesn't actually do anything (other than giving us
57 ret = drmCommandWriteRead(bo->dev->fd, DRM_KGSL_GEM_ALLOC,
60 ERROR_MSG("alloc failed: %s", strerror(errno));
64 kgsl_bo->offset = req.offset;
70 static int kgsl_bo_offset(struct fd_bo *bo, uint64_t *offset)
72 struct kgsl_bo *kgsl_bo = to_kgsl_bo(bo);
73 int ret = bo_alloc(kgsl_bo);
76 *offset = kgsl_bo->offset;
80 static int kgsl_bo_cpu_prep(struct fd_bo *bo, struct fd_pipe *pipe, uint32_t op)
82 uint32_t timestamp = kgsl_bo_get_timestamp(to_kgsl_bo(bo));
84 if (op & DRM_FREEDRENO_PREP_NOSYNC) {
88 ret = kgsl_pipe_timestamp(to_kgsl_pipe(pipe), ¤t);
92 if (timestamp > current)
99 fd_pipe_wait(pipe, timestamp);
104 static void kgsl_bo_cpu_fini(struct fd_bo *bo)
108 static void kgsl_bo_destroy(struct fd_bo *bo)
110 struct kgsl_bo *kgsl_bo = to_kgsl_bo(bo);
115 static struct fd_bo_funcs funcs = {
116 .offset = kgsl_bo_offset,
117 .cpu_prep = kgsl_bo_cpu_prep,
118 .cpu_fini = kgsl_bo_cpu_fini,
119 .destroy = kgsl_bo_destroy,
122 /* allocate a buffer handle: */
123 int kgsl_bo_new_handle(struct fd_device *dev,
124 uint32_t size, uint32_t flags, uint32_t *handle)
126 struct drm_kgsl_gem_create req = {
131 ret = drmCommandWriteRead(dev->fd, DRM_KGSL_GEM_CREATE,
136 // TODO make flags match msm driver, since kgsl is legacy..
137 // translate flags in kgsl..
139 set_memtype(dev, req.handle, flags);
141 *handle = req.handle;
146 /* allocate a new buffer object */
147 struct fd_bo * kgsl_bo_from_handle(struct fd_device *dev,
148 uint32_t size, uint32_t handle)
150 struct kgsl_bo *kgsl_bo;
154 kgsl_bo = calloc(1, sizeof(*kgsl_bo));
161 for (i = 0; i < ARRAY_SIZE(kgsl_bo->list); i++)
162 list_inithead(&kgsl_bo->list[i]);
167 struct fd_bo * fd_bo_from_fbdev(struct fd_pipe *pipe,
168 int fbfd, uint32_t size)
170 struct drm_kgsl_gem_create_fd req = {
174 struct kgsl_bo *kgsl_bo;
176 if (!is_kgsl_pipe(pipe))
179 if (drmCommandWriteRead(pipe->dev->fd, DRM_KGSL_GEM_CREATE_FD,
180 &req, sizeof(req))) {
184 bo = fd_bo_from_handle(pipe->dev, req.handle, size);
185 kgsl_bo = to_kgsl_bo(bo);
187 /* this is fugly, but works around a bug in the kernel..
188 * priv->memdesc.size never gets set, so getbufinfo ioctl
189 * thinks the buffer hasn't be allocate and fails
191 if (bo && !kgsl_bo_gpuaddr(kgsl_bo, 0)) {
192 void *fbmem = mmap(NULL, size, PROT_READ | PROT_WRITE,
193 MAP_SHARED, fbfd, 0);
194 struct kgsl_map_user_mem req = {
195 .memtype = KGSL_USER_MEM_TYPE_ADDR,
198 .hostptr = (unsigned long)fbmem,
201 ret = ioctl(to_kgsl_pipe(pipe)->fd, IOCTL_KGSL_MAP_USER_MEM, &req);
203 ERROR_MSG("mapping user mem failed: %s",
207 kgsl_bo->gpuaddr = req.gpuaddr;
219 uint32_t kgsl_bo_gpuaddr(struct kgsl_bo *kgsl_bo, uint32_t offset)
221 struct fd_bo *bo = &kgsl_bo->base;
222 if (!kgsl_bo->gpuaddr) {
223 struct drm_kgsl_gem_bufinfo req = {
224 .handle = bo->handle,
228 ret = bo_alloc(kgsl_bo);
233 ret = drmCommandWriteRead(bo->dev->fd, DRM_KGSL_GEM_GET_BUFINFO,
236 ERROR_MSG("get bufinfo failed: %s", strerror(errno));
240 kgsl_bo->gpuaddr = req.gpuaddr[0];
242 return kgsl_bo->gpuaddr + offset;
246 * Super-cheezy way to synchronization between mesa and ddx.. the
247 * SET_ACTIVE ioctl gives us a way to stash a 32b # w/ a GEM bo, and
248 * GET_BUFINFO gives us a way to retrieve it. We use this to stash
249 * the timestamp of the last ISSUEIBCMDS on the buffer.
251 * To avoid an obscene amount of syscalls, we:
252 * 1) Only set the timestamp for buffers w/ an flink name, ie.
253 * only buffers shared across processes. This is enough to
254 * catch the DRI2 buffers.
255 * 2) Only set the timestamp for buffers submitted to the 3d ring
256 * and only check the timestamps on buffers submitted to the
257 * 2d ring. This should be enough to handle synchronizing of
258 * presentation blit. We could do synchronization in the other
259 * direction too, but that would be problematic if we are using
260 * the 3d ring from DDX, since client side wouldn't know this.
262 * The waiting on timestamp happens before flush, and setting of
263 * timestamp happens after flush. It is transparent to the user
264 * of libdrm_freedreno as all the tracking of buffers happens via
268 void kgsl_bo_set_timestamp(struct kgsl_bo *kgsl_bo, uint32_t timestamp)
270 struct fd_bo *bo = &kgsl_bo->base;
272 struct drm_kgsl_gem_active req = {
273 .handle = bo->handle,
278 ret = drmCommandWrite(bo->dev->fd, DRM_KGSL_GEM_SET_ACTIVE,
281 ERROR_MSG("set active failed: %s", strerror(errno));
286 uint32_t kgsl_bo_get_timestamp(struct kgsl_bo *kgsl_bo)
288 struct fd_bo *bo = &kgsl_bo->base;
289 uint32_t timestamp = 0;
291 struct drm_kgsl_gem_bufinfo req = {
292 .handle = bo->handle,
296 ret = drmCommandWriteRead(bo->dev->fd, DRM_KGSL_GEM_GET_BUFINFO,
299 ERROR_MSG("get bufinfo failed: %s", strerror(errno));
303 timestamp = req.active;