1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * Copyright (c) 2010-2014,2016 The Linux Foundation. All rights reserved. 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18 #include <sys/mman.h> 19 20 #include <cutils/log.h> 21 #include <cutils/properties.h> 22 #include <dlfcn.h> 23 24 #include <hardware/hardware.h> 25 26 #include <fcntl.h> 27 #include <errno.h> 28 #include <sys/ioctl.h> 29 #include <string.h> 30 #include <stdlib.h> 31 #include <pthread.h> 32 #include <cutils/atomic.h> 33 34 #include <linux/fb.h> 35 #include <linux/msm_mdp.h> 36 37 #include <GLES/gl.h> 38 39 #include "gralloc_priv.h" 40 #include "fb_priv.h" 41 #include "gr.h" 42 #include <cutils/properties.h> 43 #include <profiler.h> 44 45 #define EVEN_OUT(x) if (x & 0x0001) {x--;} 46 47 enum { 48 PAGE_FLIP = 0x00000001, 49 }; 50 51 struct fb_context_t { 52 framebuffer_device_t device; 53 //fd - which is returned on open 54 int fbFd; 55 }; 56 57 static int fb_setSwapInterval(struct framebuffer_device_t* dev, 58 int interval) 59 { 60 #ifdef DEBUG_SWAPINTERVAL 61 //XXX: Get the value here and implement along with 62 //single vsync in HWC 63 char pval[PROPERTY_VALUE_MAX]; 64 property_get("debug.egl.swapinterval", pval, "-1"); 65 int property_interval = atoi(pval); 66 if (property_interval >= 0) 67 interval = property_interval; 68 #endif 69 70 private_module_t* m = reinterpret_cast<private_module_t*>( 71 dev->common.module); 72 if (interval < dev->minSwapInterval || interval > dev->maxSwapInterval) 73 return -EINVAL; 74 75 m->swapInterval = interval; 76 return 0; 77 } 78 79 static int fb_post(struct framebuffer_device_t* dev, buffer_handle_t buffer) 80 { 81 private_module_t* m = 82 reinterpret_cast<private_module_t*>(dev->common.module); 83 private_handle_t *hnd = static_cast<private_handle_t*> 84 (const_cast<native_handle_t*>(buffer)); 85 fb_context_t *ctx = reinterpret_cast<fb_context_t*>(dev); 86 const unsigned int offset = (unsigned int) (hnd->base - 87 m->framebuffer->base); 88 m->info.activate = FB_ACTIVATE_VBL; 89 m->info.yoffset = (int)(offset / m->finfo.line_length); 90 if (ioctl(ctx->fbFd, FBIOPUT_VSCREENINFO, &m->info) == -1) { 91 ALOGE("%s: FBIOPUT_VSCREENINFO for primary failed, str: %s", 92 __FUNCTION__, strerror(errno)); 93 return -errno; 94 } 95 return 0; 96 } 97 98 static int fb_compositionComplete(struct framebuffer_device_t* dev) 99 { 100 // TODO: Properly implement composition complete callback 101 if(!dev) { 102 return -1; 103 } 104 glFinish(); 105 106 return 0; 107 } 108 109 int mapFrameBufferLocked(framebuffer_device_t *dev) 110 { 111 private_module_t* module = 112 reinterpret_cast<private_module_t*>(dev->common.module); 113 fb_context_t *ctx = reinterpret_cast<fb_context_t*>(dev); 114 // already initialized... 115 if (module->framebuffer) { 116 return 0; 117 } 118 char const * const device_template[] = { 119 "/dev/graphics/fb%u", 120 "/dev/fb%u", 121 0 }; 122 123 int fd = -1; 124 int i=0; 125 char name[64]; 126 char property[PROPERTY_VALUE_MAX]; 127 128 while ((fd==-1) && device_template[i]) { 129 snprintf(name, 64, device_template[i], 0); 130 fd = open(name, O_RDWR, 0); 131 i++; 132 } 133 if (fd < 0) 134 return -errno; 135 136 struct fb_fix_screeninfo finfo; 137 if (ioctl(fd, FBIOGET_FSCREENINFO, &finfo) == -1) { 138 close(fd); 139 return -errno; 140 } 141 142 struct fb_var_screeninfo info; 143 if (ioctl(fd, FBIOGET_VSCREENINFO, &info) == -1) { 144 close(fd); 145 return -errno; 146 } 147 148 info.reserved[0] = 0; 149 info.reserved[1] = 0; 150 info.reserved[2] = 0; 151 info.xoffset = 0; 152 info.yoffset = 0; 153 info.activate = FB_ACTIVATE_NOW; 154 155 /* Interpretation of offset for color fields: All offsets are from the 156 * right, inside a "pixel" value, which is exactly 'bits_per_pixel' wide 157 * (means: you can use the offset as right argument to <<). A pixel 158 * afterwards is a bit stream and is written to video memory as that 159 * unmodified. This implies big-endian byte order if bits_per_pixel is 160 * greater than 8. 161 */ 162 163 if(info.bits_per_pixel == 32) { 164 /* 165 * Explicitly request RGBA_8888 166 */ 167 info.bits_per_pixel = 32; 168 info.red.offset = 24; 169 info.red.length = 8; 170 info.green.offset = 16; 171 info.green.length = 8; 172 info.blue.offset = 8; 173 info.blue.length = 8; 174 info.transp.offset = 0; 175 info.transp.length = 8; 176 177 /* Note: the GL driver does not have a r=8 g=8 b=8 a=0 config, so if we 178 * do not use the MDP for composition (i.e. hw composition == 0), ask 179 * for RGBA instead of RGBX. */ 180 if (property_get("debug.sf.hw", property, NULL) > 0 && 181 atoi(property) == 0) 182 module->fbFormat = HAL_PIXEL_FORMAT_RGBX_8888; 183 else if(property_get("debug.composition.type", property, NULL) > 0 && 184 (strncmp(property, "mdp", 3) == 0)) 185 module->fbFormat = HAL_PIXEL_FORMAT_RGBX_8888; 186 else 187 module->fbFormat = HAL_PIXEL_FORMAT_RGBA_8888; 188 } else { 189 /* 190 * Explicitly request 5/6/5 191 */ 192 info.bits_per_pixel = 16; 193 info.red.offset = 11; 194 info.red.length = 5; 195 info.green.offset = 5; 196 info.green.length = 6; 197 info.blue.offset = 0; 198 info.blue.length = 5; 199 info.transp.offset = 0; 200 info.transp.length = 0; 201 module->fbFormat = HAL_PIXEL_FORMAT_RGB_565; 202 } 203 204 //adreno needs 4k aligned offsets. Max hole size is 4096-1 205 unsigned int size = roundUpToPageSize(info.yres * info.xres * 206 (info.bits_per_pixel/8)); 207 208 /* 209 * Request NUM_BUFFERS screens (at least 2 for page flipping) 210 */ 211 int numberOfBuffers = (int)(finfo.smem_len/size); 212 ALOGV("num supported framebuffers in kernel = %d", numberOfBuffers); 213 214 if (property_get("debug.gr.numframebuffers", property, NULL) > 0) { 215 int num = atoi(property); 216 if ((num >= NUM_FRAMEBUFFERS_MIN) && (num <= NUM_FRAMEBUFFERS_MAX)) { 217 numberOfBuffers = num; 218 } 219 } 220 if (numberOfBuffers > NUM_FRAMEBUFFERS_MAX) 221 numberOfBuffers = NUM_FRAMEBUFFERS_MAX; 222 223 ALOGV("We support %d buffers", numberOfBuffers); 224 225 //consider the included hole by 4k alignment 226 uint32_t line_length = (info.xres * info.bits_per_pixel / 8); 227 info.yres_virtual = (uint32_t) ((size * numberOfBuffers) / line_length); 228 229 uint32_t flags = PAGE_FLIP; 230 231 if (info.yres_virtual < ((size * 2) / line_length) ) { 232 // we need at least 2 for page-flipping 233 info.yres_virtual = (int)(size / line_length); 234 flags &= ~PAGE_FLIP; 235 ALOGW("page flipping not supported (yres_virtual=%d, requested=%d)", 236 info.yres_virtual, info.yres*2); 237 } 238 239 if (ioctl(fd, FBIOGET_VSCREENINFO, &info) == -1) { 240 close(fd); 241 return -errno; 242 } 243 244 if (int(info.width) <= 0 || int(info.height) <= 0) { 245 // the driver doesn't return that information 246 // default to 160 dpi 247 info.width = (uint32_t)(((float)(info.xres) * 25.4f)/160.0f + 0.5f); 248 info.height = (uint32_t)(((float)(info.yres) * 25.4f)/160.0f + 0.5f); 249 } 250 251 float xdpi = ((float)(info.xres) * 25.4f) / (float)info.width; 252 float ydpi = ((float)(info.yres) * 25.4f) / (float)info.height; 253 254 #ifdef MSMFB_METADATA_GET 255 struct msmfb_metadata metadata; 256 memset(&metadata, 0 , sizeof(metadata)); 257 metadata.op = metadata_op_frame_rate; 258 if (ioctl(fd, MSMFB_METADATA_GET, &metadata) == -1) { 259 ALOGE("Error retrieving panel frame rate"); 260 close(fd); 261 return -errno; 262 } 263 float fps = (float)metadata.data.panel_frame_rate; 264 #else 265 //XXX: Remove reserved field usage on all baselines 266 //The reserved[3] field is used to store FPS by the driver. 267 float fps = info.reserved[3] & 0xFF; 268 #endif 269 ALOGI("using (fd=%d)\n" 270 "id = %s\n" 271 "xres = %d px\n" 272 "yres = %d px\n" 273 "xres_virtual = %d px\n" 274 "yres_virtual = %d px\n" 275 "bpp = %d\n" 276 "r = %2u:%u\n" 277 "g = %2u:%u\n" 278 "b = %2u:%u\n", 279 fd, 280 finfo.id, 281 info.xres, 282 info.yres, 283 info.xres_virtual, 284 info.yres_virtual, 285 info.bits_per_pixel, 286 info.red.offset, info.red.length, 287 info.green.offset, info.green.length, 288 info.blue.offset, info.blue.length 289 ); 290 291 ALOGI("width = %d mm (%f dpi)\n" 292 "height = %d mm (%f dpi)\n" 293 "refresh rate = %.2f Hz\n", 294 info.width, xdpi, 295 info.height, ydpi, 296 fps 297 ); 298 299 300 if (ioctl(fd, FBIOGET_FSCREENINFO, &finfo) == -1) { 301 close(fd); 302 return -errno; 303 } 304 305 if (finfo.smem_len <= 0) { 306 close(fd); 307 return -errno; 308 } 309 310 module->flags = flags; 311 module->info = info; 312 module->finfo = finfo; 313 module->xdpi = xdpi; 314 module->ydpi = ydpi; 315 module->fps = fps; 316 module->swapInterval = 1; 317 318 CALC_INIT(); 319 320 /* 321 * map the framebuffer 322 */ 323 324 module->numBuffers = info.yres_virtual / info.yres; 325 module->bufferMask = 0; 326 //adreno needs page aligned offsets. Align the fbsize to pagesize. 327 unsigned int fbSize = roundUpToPageSize(finfo.line_length * info.yres)* 328 module->numBuffers; 329 void* vaddr = mmap(0, fbSize, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0); 330 if (vaddr == MAP_FAILED) { 331 ALOGE("Error mapping the framebuffer (%s)", strerror(errno)); 332 close(fd); 333 return -errno; 334 } 335 //store the framebuffer fd in the ctx 336 ctx->fbFd = fd; 337 #ifdef MSMFB_METADATA_GET 338 memset(&metadata, 0 , sizeof(metadata)); 339 metadata.op = metadata_op_get_ion_fd; 340 // get the ION fd for the framebuffer, as GPU needs ION fd 341 if (ioctl(fd, MSMFB_METADATA_GET, &metadata) == -1) { 342 ALOGE("Error getting ION fd (%s)", strerror(errno)); 343 close(fd); 344 return -errno; 345 } 346 if(metadata.data.fbmem_ionfd < 0) { 347 ALOGE("Error: Ioctl returned invalid ION fd = %d", 348 metadata.data.fbmem_ionfd); 349 close(fd); 350 return -errno; 351 } 352 fd = metadata.data.fbmem_ionfd; 353 #endif 354 // Create framebuffer handle using the ION fd 355 module->framebuffer = new private_handle_t(fd, fbSize, 356 private_handle_t::PRIV_FLAGS_USES_ION, 357 BUFFER_TYPE_UI, 358 module->fbFormat, info.xres, info.yres); 359 module->framebuffer->base = uint64_t(vaddr); 360 memset(vaddr, 0, fbSize); 361 //Enable vsync 362 int enable = 1; 363 ioctl(ctx->fbFd, MSMFB_OVERLAY_VSYNC_CTRL, &enable); 364 return 0; 365 } 366 367 static int mapFrameBuffer(framebuffer_device_t *dev) 368 { 369 int err = -1; 370 char property[PROPERTY_VALUE_MAX]; 371 if((property_get("debug.gralloc.map_fb_memory", property, NULL) > 0) && 372 (!strncmp(property, "1", PROPERTY_VALUE_MAX ) || 373 (!strncasecmp(property,"true", PROPERTY_VALUE_MAX )))) { 374 private_module_t* module = 375 reinterpret_cast<private_module_t*>(dev->common.module); 376 pthread_mutex_lock(&module->lock); 377 err = mapFrameBufferLocked(dev); 378 pthread_mutex_unlock(&module->lock); 379 } 380 return err; 381 } 382 383 /*****************************************************************************/ 384 385 static int fb_close(struct hw_device_t *dev) 386 { 387 fb_context_t* ctx = (fb_context_t*)dev; 388 if (ctx) { 389 #ifdef MSMFB_METADATA_GET 390 if(ctx->fbFd >=0) { 391 close(ctx->fbFd); 392 } 393 #endif 394 //Hack until fbdev is removed. Framework could close this causing hwc a 395 //pain. 396 //free(ctx); 397 } 398 return 0; 399 } 400 401 int fb_device_open(hw_module_t const* module, const char* name, 402 hw_device_t** device) 403 { 404 int status = -EINVAL; 405 if (!strcmp(name, GRALLOC_HARDWARE_FB0)) { 406 alloc_device_t* gralloc_device; 407 status = gralloc_open(module, &gralloc_device); 408 if (status < 0) 409 return status; 410 411 /* initialize our state here */ 412 fb_context_t *dev = (fb_context_t*)malloc(sizeof(*dev)); 413 if(dev == NULL) { 414 gralloc_close(gralloc_device); 415 return status; 416 } 417 memset(dev, 0, sizeof(*dev)); 418 419 /* initialize the procs */ 420 dev->device.common.tag = HARDWARE_DEVICE_TAG; 421 dev->device.common.version = 0; 422 dev->device.common.module = const_cast<hw_module_t*>(module); 423 dev->device.common.close = fb_close; 424 dev->device.setSwapInterval = fb_setSwapInterval; 425 dev->device.post = fb_post; 426 dev->device.setUpdateRect = 0; 427 dev->device.compositionComplete = fb_compositionComplete; 428 429 status = mapFrameBuffer((framebuffer_device_t*)dev); 430 private_module_t* m = (private_module_t*)dev->device.common.module; 431 if (status >= 0) { 432 int stride = m->finfo.line_length / (m->info.bits_per_pixel >> 3); 433 const_cast<uint32_t&>(dev->device.flags) = 0; 434 const_cast<uint32_t&>(dev->device.width) = m->info.xres; 435 const_cast<uint32_t&>(dev->device.height) = m->info.yres; 436 const_cast<int&>(dev->device.stride) = stride; 437 const_cast<int&>(dev->device.format) = m->fbFormat; 438 const_cast<float&>(dev->device.xdpi) = m->xdpi; 439 const_cast<float&>(dev->device.ydpi) = m->ydpi; 440 const_cast<float&>(dev->device.fps) = m->fps; 441 const_cast<int&>(dev->device.minSwapInterval) = 442 PRIV_MIN_SWAP_INTERVAL; 443 const_cast<int&>(dev->device.maxSwapInterval) = 444 PRIV_MAX_SWAP_INTERVAL; 445 const_cast<int&>(dev->device.numFramebuffers) = m->numBuffers; 446 dev->device.setUpdateRect = 0; 447 448 *device = &dev->device.common; 449 } 450 451 // Close the gralloc module 452 gralloc_close(gralloc_device); 453 } 454 return status; 455 } 456
