1 /* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */ 2 3 /* 4 * Copyright (C) 2013 Rob Clark <robclark (at) freedesktop.org> 5 * 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: 12 * 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 15 * Software. 16 * 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 23 * SOFTWARE. 24 * 25 * Authors: 26 * Rob Clark <robclark (at) freedesktop.org> 27 */ 28 29 #include "kgsl_priv.h" 30 31 #include <linux/fb.h> 32 33 static int set_memtype(struct fd_device *dev, uint32_t handle, uint32_t flags) 34 { 35 struct drm_kgsl_gem_memtype req = { 36 .handle = handle, 37 .type = flags & DRM_FREEDRENO_GEM_TYPE_MEM_MASK, 38 }; 39 40 return drmCommandWrite(dev->fd, DRM_KGSL_GEM_SETMEMTYPE, 41 &req, sizeof(req)); 42 } 43 44 static int bo_alloc(struct kgsl_bo *kgsl_bo) 45 { 46 struct fd_bo *bo = &kgsl_bo->base; 47 if (!kgsl_bo->offset) { 48 struct drm_kgsl_gem_alloc req = { 49 .handle = bo->handle, 50 }; 51 int ret; 52 53 /* if the buffer is already backed by pages then this 54 * doesn't actually do anything (other than giving us 55 * the offset) 56 */ 57 ret = drmCommandWriteRead(bo->dev->fd, DRM_KGSL_GEM_ALLOC, 58 &req, sizeof(req)); 59 if (ret) { 60 ERROR_MSG("alloc failed: %s", strerror(errno)); 61 return ret; 62 } 63 64 kgsl_bo->offset = req.offset; 65 } 66 67 return 0; 68 } 69 70 static int kgsl_bo_offset(struct fd_bo *bo, uint64_t *offset) 71 { 72 struct kgsl_bo *kgsl_bo = to_kgsl_bo(bo); 73 int ret = bo_alloc(kgsl_bo); 74 if (ret) 75 return ret; 76 *offset = kgsl_bo->offset; 77 return 0; 78 } 79 80 static int kgsl_bo_cpu_prep(struct fd_bo *bo, struct fd_pipe *pipe, uint32_t op) 81 { 82 uint32_t timestamp = kgsl_bo_get_timestamp(to_kgsl_bo(bo)); 83 84 if (op & DRM_FREEDRENO_PREP_NOSYNC) { 85 uint32_t current; 86 int ret; 87 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?) 91 */ 92 if (!pipe) 93 return -EBUSY; 94 95 ret = kgsl_pipe_timestamp(to_kgsl_pipe(pipe), ¤t); 96 if (ret) 97 return ret; 98 99 if (timestamp > current) 100 return -EBUSY; 101 102 return 0; 103 } 104 105 if (timestamp) 106 fd_pipe_wait(pipe, timestamp); 107 108 return 0; 109 } 110 111 static void kgsl_bo_cpu_fini(struct fd_bo *bo) 112 { 113 } 114 115 static int kgsl_bo_madvise(struct fd_bo *bo, int willneed) 116 { 117 return willneed; /* not supported by kgsl */ 118 } 119 120 static void kgsl_bo_destroy(struct fd_bo *bo) 121 { 122 struct kgsl_bo *kgsl_bo = to_kgsl_bo(bo); 123 free(kgsl_bo); 124 125 } 126 127 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, 133 }; 134 135 /* 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) 138 { 139 struct drm_kgsl_gem_create req = { 140 .size = size, 141 }; 142 int ret; 143 144 ret = drmCommandWriteRead(dev->fd, DRM_KGSL_GEM_CREATE, 145 &req, sizeof(req)); 146 if (ret) 147 return ret; 148 149 // TODO make flags match msm driver, since kgsl is legacy.. 150 // translate flags in kgsl.. 151 152 set_memtype(dev, req.handle, flags); 153 154 *handle = req.handle; 155 156 return 0; 157 } 158 159 /* 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) 162 { 163 struct kgsl_bo *kgsl_bo; 164 struct fd_bo *bo; 165 unsigned i; 166 167 kgsl_bo = calloc(1, sizeof(*kgsl_bo)); 168 if (!kgsl_bo) 169 return NULL; 170 171 bo = &kgsl_bo->base; 172 bo->funcs = &funcs; 173 174 for (i = 0; i < ARRAY_SIZE(kgsl_bo->list); i++) 175 list_inithead(&kgsl_bo->list[i]); 176 177 return bo; 178 } 179 180 struct fd_bo * 181 fd_bo_from_fbdev(struct fd_pipe *pipe, int fbfd, uint32_t size) 182 { 183 struct fd_bo *bo; 184 185 if (!is_kgsl_pipe(pipe)) 186 return NULL; 187 188 bo = fd_bo_new(pipe->dev, 1, 0); 189 190 /* 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 193 */ 194 if (bo) { 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, 199 .len = size, 200 .offset = 0, 201 .hostptr = (unsigned long)fbmem, 202 }; 203 struct kgsl_bo *kgsl_bo = to_kgsl_bo(bo); 204 int ret; 205 206 ret = ioctl(to_kgsl_pipe(pipe)->fd, IOCTL_KGSL_MAP_USER_MEM, &req); 207 if (ret) { 208 ERROR_MSG("mapping user mem failed: %s", 209 strerror(errno)); 210 goto fail; 211 } 212 kgsl_bo->gpuaddr = req.gpuaddr; 213 bo->map = fbmem; 214 } 215 216 return bo; 217 fail: 218 if (bo) 219 fd_bo_del(bo); 220 return NULL; 221 } 222 223 drm_private uint32_t kgsl_bo_gpuaddr(struct kgsl_bo *kgsl_bo, uint32_t offset) 224 { 225 struct fd_bo *bo = &kgsl_bo->base; 226 if (!kgsl_bo->gpuaddr) { 227 struct drm_kgsl_gem_bufinfo req = { 228 .handle = bo->handle, 229 }; 230 int ret; 231 232 ret = bo_alloc(kgsl_bo); 233 if (ret) { 234 return ret; 235 } 236 237 ret = drmCommandWriteRead(bo->dev->fd, DRM_KGSL_GEM_GET_BUFINFO, 238 &req, sizeof(req)); 239 if (ret) { 240 ERROR_MSG("get bufinfo failed: %s", strerror(errno)); 241 return 0; 242 } 243 244 kgsl_bo->gpuaddr = req.gpuaddr[0]; 245 } 246 return kgsl_bo->gpuaddr + offset; 247 } 248 249 /* 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. 254 * 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. 265 * 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 269 * _emit_reloc().. 270 */ 271 272 drm_private void kgsl_bo_set_timestamp(struct kgsl_bo *kgsl_bo, 273 uint32_t timestamp) 274 { 275 struct fd_bo *bo = &kgsl_bo->base; 276 if (bo->name) { 277 struct drm_kgsl_gem_active req = { 278 .handle = bo->handle, 279 .active = timestamp, 280 }; 281 int ret; 282 283 ret = drmCommandWrite(bo->dev->fd, DRM_KGSL_GEM_SET_ACTIVE, 284 &req, sizeof(req)); 285 if (ret) { 286 ERROR_MSG("set active failed: %s", strerror(errno)); 287 } 288 } 289 } 290 291 drm_private uint32_t kgsl_bo_get_timestamp(struct kgsl_bo *kgsl_bo) 292 { 293 struct fd_bo *bo = &kgsl_bo->base; 294 uint32_t timestamp = 0; 295 if (bo->name) { 296 struct drm_kgsl_gem_bufinfo req = { 297 .handle = bo->handle, 298 }; 299 int ret; 300 301 ret = drmCommandWriteRead(bo->dev->fd, DRM_KGSL_GEM_GET_BUFINFO, 302 &req, sizeof(req)); 303 if (ret) { 304 ERROR_MSG("get bufinfo failed: %s", strerror(errno)); 305 return 0; 306 } 307 308 timestamp = req.active; 309 } 310 return timestamp; 311 } 312
