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 /* special case for is_idle().. we can't really handle that
89 * properly in kgsl (perhaps we need a way to just disable
90 * the bo-cache for kgsl?)
95 ret = kgsl_pipe_timestamp(to_kgsl_pipe(pipe), ¤t);
99 if (timestamp > current)
106 fd_pipe_wait(pipe, timestamp);
111 static void kgsl_bo_cpu_fini(struct fd_bo *bo)
115 static int kgsl_bo_madvise(struct fd_bo *bo, int willneed)
117 return willneed; /* not supported by kgsl */
120 static void kgsl_bo_destroy(struct fd_bo *bo)
122 struct kgsl_bo *kgsl_bo = to_kgsl_bo(bo);
127 static const struct fd_bo_funcs funcs = {
128 .offset = kgsl_bo_offset,
129 .cpu_prep = kgsl_bo_cpu_prep,
130 .cpu_fini = kgsl_bo_cpu_fini,
131 .madvise = kgsl_bo_madvise,
132 .destroy = kgsl_bo_destroy,
135 /* allocate a buffer handle: */
136 drm_private int kgsl_bo_new_handle(struct fd_device *dev,
137 uint32_t size, uint32_t flags, uint32_t *handle)
139 struct drm_kgsl_gem_create req = {
144 ret = drmCommandWriteRead(dev->fd, DRM_KGSL_GEM_CREATE,
149 // TODO make flags match msm driver, since kgsl is legacy..
150 // translate flags in kgsl..
152 set_memtype(dev, req.handle, flags);
154 *handle = req.handle;
159 /* allocate a new buffer object */
160 drm_private struct fd_bo * kgsl_bo_from_handle(struct fd_device *dev,
161 uint32_t size, uint32_t handle)
163 struct kgsl_bo *kgsl_bo;
167 kgsl_bo = calloc(1, sizeof(*kgsl_bo));
174 for (i = 0; i < ARRAY_SIZE(kgsl_bo->list); i++)
175 list_inithead(&kgsl_bo->list[i]);
180 drm_public struct fd_bo *
181 fd_bo_from_fbdev(struct fd_pipe *pipe, int fbfd, uint32_t size)
185 if (!is_kgsl_pipe(pipe))
188 bo = fd_bo_new(pipe->dev, 1, 0);
190 /* this is fugly, but works around a bug in the kernel..
191 * priv->memdesc.size never gets set, so getbufinfo ioctl
192 * thinks the buffer hasn't be allocate and fails
195 void *fbmem = drm_mmap(NULL, size, PROT_READ | PROT_WRITE,
196 MAP_SHARED, fbfd, 0);
197 struct kgsl_map_user_mem req = {
198 .memtype = KGSL_USER_MEM_TYPE_ADDR,
201 .hostptr = (unsigned long)fbmem,
203 struct kgsl_bo *kgsl_bo = to_kgsl_bo(bo);
206 ret = ioctl(to_kgsl_pipe(pipe)->fd, IOCTL_KGSL_MAP_USER_MEM, &req);
208 ERROR_MSG("mapping user mem failed: %s",
212 kgsl_bo->gpuaddr = req.gpuaddr;
223 drm_private uint32_t kgsl_bo_gpuaddr(struct kgsl_bo *kgsl_bo, uint32_t offset)
225 struct fd_bo *bo = &kgsl_bo->base;
226 if (!kgsl_bo->gpuaddr) {
227 struct drm_kgsl_gem_bufinfo req = {
228 .handle = bo->handle,
232 ret = bo_alloc(kgsl_bo);
237 ret = drmCommandWriteRead(bo->dev->fd, DRM_KGSL_GEM_GET_BUFINFO,
240 ERROR_MSG("get bufinfo failed: %s", strerror(errno));
244 kgsl_bo->gpuaddr = req.gpuaddr[0];
246 return kgsl_bo->gpuaddr + offset;
250 * Super-cheezy way to synchronization between mesa and ddx.. the
251 * SET_ACTIVE ioctl gives us a way to stash a 32b # w/ a GEM bo, and
252 * GET_BUFINFO gives us a way to retrieve it. We use this to stash
253 * the timestamp of the last ISSUEIBCMDS on the buffer.
255 * To avoid an obscene amount of syscalls, we:
256 * 1) Only set the timestamp for buffers w/ an flink name, ie.
257 * only buffers shared across processes. This is enough to
258 * catch the DRI2 buffers.
259 * 2) Only set the timestamp for buffers submitted to the 3d ring
260 * and only check the timestamps on buffers submitted to the
261 * 2d ring. This should be enough to handle synchronizing of
262 * presentation blit. We could do synchronization in the other
263 * direction too, but that would be problematic if we are using
264 * the 3d ring from DDX, since client side wouldn't know this.
266 * The waiting on timestamp happens before flush, and setting of
267 * timestamp happens after flush. It is transparent to the user
268 * of libdrm_freedreno as all the tracking of buffers happens via
272 drm_private void kgsl_bo_set_timestamp(struct kgsl_bo *kgsl_bo,
275 struct fd_bo *bo = &kgsl_bo->base;
277 struct drm_kgsl_gem_active req = {
278 .handle = bo->handle,
283 ret = drmCommandWrite(bo->dev->fd, DRM_KGSL_GEM_SET_ACTIVE,
286 ERROR_MSG("set active failed: %s", strerror(errno));
291 drm_private uint32_t kgsl_bo_get_timestamp(struct kgsl_bo *kgsl_bo)
293 struct fd_bo *bo = &kgsl_bo->base;
294 uint32_t timestamp = 0;
296 struct drm_kgsl_gem_bufinfo req = {
297 .handle = bo->handle,
301 ret = drmCommandWriteRead(bo->dev->fd, DRM_KGSL_GEM_GET_BUFINFO,
304 ERROR_MSG("get bufinfo failed: %s", strerror(errno));
308 timestamp = req.active;