1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * Copyright (c) 2010-2014 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 /** min of int a, b */ 47 static inline int min(int a, int b) { 48 return (a<b) ? a : b; 49 } 50 /** max of int a, b */ 51 static inline int max(int a, int b) { 52 return (a>b) ? a : b; 53 } 54 55 enum { 56 PAGE_FLIP = 0x00000001, 57 }; 58 59 struct fb_context_t { 60 framebuffer_device_t device; 61 //fd - which is returned on open 62 int fbFd; 63 }; 64 65 static int fb_setSwapInterval(struct framebuffer_device_t* dev, 66 int interval) 67 { 68 //XXX: Get the value here and implement along with 69 //single vsync in HWC 70 char pval[PROPERTY_VALUE_MAX]; 71 property_get("debug.egl.swapinterval", pval, "-1"); 72 int property_interval = atoi(pval); 73 if (property_interval >= 0) 74 interval = property_interval; 75 76 private_module_t* m = reinterpret_cast<private_module_t*>( 77 dev->common.module); 78 if (interval < dev->minSwapInterval || interval > dev->maxSwapInterval) 79 return -EINVAL; 80 81 m->swapInterval = interval; 82 return 0; 83 } 84 85 static int fb_post(struct framebuffer_device_t* dev, buffer_handle_t buffer) 86 { 87 private_module_t* m = 88 reinterpret_cast<private_module_t*>(dev->common.module); 89 private_handle_t *hnd = static_cast<private_handle_t*> 90 (const_cast<native_handle_t*>(buffer)); 91 fb_context_t *ctx = reinterpret_cast<fb_context_t*>(dev); 92 const unsigned int offset = (unsigned int) (hnd->base - 93 m->framebuffer->base); 94 m->info.activate = FB_ACTIVATE_VBL; 95 m->info.yoffset = (int)(offset / m->finfo.line_length); 96 if (ioctl(ctx->fbFd, FBIOPUT_VSCREENINFO, &m->info) == -1) { 97 ALOGE("%s: FBIOPUT_VSCREENINFO for primary failed, str: %s", 98 __FUNCTION__, strerror(errno)); 99 return -errno; 100 } 101 return 0; 102 } 103 104 static int fb_compositionComplete(struct framebuffer_device_t* dev) 105 { 106 // TODO: Properly implement composition complete callback 107 if(!dev) { 108 return -1; 109 } 110 glFinish(); 111 112 return 0; 113 } 114 115 int mapFrameBufferLocked(framebuffer_device_t *dev) 116 { 117 private_module_t* module = 118 reinterpret_cast<private_module_t*>(dev->common.module); 119 fb_context_t *ctx = reinterpret_cast<fb_context_t*>(dev); 120 // already initialized... 121 if (module->framebuffer) { 122 return 0; 123 } 124 char const * const device_template[] = { 125 "/dev/graphics/fb%u", 126 "/dev/fb%u", 127 0 }; 128 129 int fd = -1; 130 int i=0; 131 char name[64]; 132 char property[PROPERTY_VALUE_MAX]; 133 134 while ((fd==-1) && device_template[i]) { 135 snprintf(name, 64, device_template[i], 0); 136 fd = open(name, O_RDWR, 0); 137 i++; 138 } 139 if (fd < 0) 140 return -errno; 141 142 struct fb_fix_screeninfo finfo; 143 if (ioctl(fd, FBIOGET_FSCREENINFO, &finfo) == -1) { 144 close(fd); 145 return -errno; 146 } 147 148 struct fb_var_screeninfo info; 149 if (ioctl(fd, FBIOGET_VSCREENINFO, &info) == -1) { 150 close(fd); 151 return -errno; 152 } 153 154 info.reserved[0] = 0; 155 info.reserved[1] = 0; 156 info.reserved[2] = 0; 157 info.xoffset = 0; 158 info.yoffset = 0; 159 info.activate = FB_ACTIVATE_NOW; 160 161 /* Interpretation of offset for color fields: All offsets are from the 162 * right, inside a "pixel" value, which is exactly 'bits_per_pixel' wide 163 * (means: you can use the offset as right argument to <<). A pixel 164 * afterwards is a bit stream and is written to video memory as that 165 * unmodified. This implies big-endian byte order if bits_per_pixel is 166 * greater than 8. 167 */ 168 169 if(info.bits_per_pixel == 32) { 170 /* 171 * Explicitly request RGBA_8888 172 */ 173 info.bits_per_pixel = 32; 174 info.red.offset = 24; 175 info.red.length = 8; 176 info.green.offset = 16; 177 info.green.length = 8; 178 info.blue.offset = 8; 179 info.blue.length = 8; 180 info.transp.offset = 0; 181 info.transp.length = 8; 182 183 /* Note: the GL driver does not have a r=8 g=8 b=8 a=0 config, so if we 184 * do not use the MDP for composition (i.e. hw composition == 0), ask 185 * for RGBA instead of RGBX. */ 186 if (property_get("debug.sf.hw", property, NULL) > 0 && 187 atoi(property) == 0) 188 module->fbFormat = HAL_PIXEL_FORMAT_RGBX_8888; 189 else if(property_get("debug.composition.type", property, NULL) > 0 && 190 (strncmp(property, "mdp", 3) == 0)) 191 module->fbFormat = HAL_PIXEL_FORMAT_RGBX_8888; 192 else 193 module->fbFormat = HAL_PIXEL_FORMAT_RGBA_8888; 194 } else { 195 /* 196 * Explicitly request 5/6/5 197 */ 198 info.bits_per_pixel = 16; 199 info.red.offset = 11; 200 info.red.length = 5; 201 info.green.offset = 5; 202 info.green.length = 6; 203 info.blue.offset = 0; 204 info.blue.length = 5; 205 info.transp.offset = 0; 206 info.transp.length = 0; 207 module->fbFormat = HAL_PIXEL_FORMAT_RGB_565; 208 } 209 210 //adreno needs 4k aligned offsets. Max hole size is 4096-1 211 unsigned int size = roundUpToPageSize(info.yres * info.xres * 212 (info.bits_per_pixel/8)); 213 214 /* 215 * Request NUM_BUFFERS screens (at least 2 for page flipping) 216 */ 217 int numberOfBuffers = (int)(finfo.smem_len/size); 218 ALOGV("num supported framebuffers in kernel = %d", numberOfBuffers); 219 220 if (property_get("debug.gr.numframebuffers", property, NULL) > 0) { 221 int num = atoi(property); 222 if ((num >= NUM_FRAMEBUFFERS_MIN) && (num <= NUM_FRAMEBUFFERS_MAX)) { 223 numberOfBuffers = num; 224 } 225 } 226 if (numberOfBuffers > NUM_FRAMEBUFFERS_MAX) 227 numberOfBuffers = NUM_FRAMEBUFFERS_MAX; 228 229 ALOGV("We support %d buffers", numberOfBuffers); 230 231 //consider the included hole by 4k alignment 232 uint32_t line_length = (info.xres * info.bits_per_pixel / 8); 233 info.yres_virtual = (uint32_t) ((size * numberOfBuffers) / line_length); 234 235 uint32_t flags = PAGE_FLIP; 236 237 if (info.yres_virtual < ((size * 2) / line_length) ) { 238 // we need at least 2 for page-flipping 239 info.yres_virtual = (int)(size / line_length); 240 flags &= ~PAGE_FLIP; 241 ALOGW("page flipping not supported (yres_virtual=%d, requested=%d)", 242 info.yres_virtual, info.yres*2); 243 } 244 245 if (ioctl(fd, FBIOGET_VSCREENINFO, &info) == -1) { 246 close(fd); 247 return -errno; 248 } 249 250 if (int(info.width) <= 0 || int(info.height) <= 0) { 251 // the driver doesn't return that information 252 // default to 160 dpi 253 info.width = (uint32_t)(((float)(info.xres) * 25.4f)/160.0f + 0.5f); 254 info.height = (uint32_t)(((float)(info.yres) * 25.4f)/160.0f + 0.5f); 255 } 256 257 float xdpi = ((float)(info.xres) * 25.4f) / (float)info.width; 258 float ydpi = ((float)(info.yres) * 25.4f) / (float)info.height; 259 260 #ifdef MSMFB_METADATA_GET 261 struct msmfb_metadata metadata; 262 memset(&metadata, 0 , sizeof(metadata)); 263 metadata.op = metadata_op_frame_rate; 264 if (ioctl(fd, MSMFB_METADATA_GET, &metadata) == -1) { 265 ALOGE("Error retrieving panel frame rate"); 266 close(fd); 267 return -errno; 268 } 269 float fps = (float)metadata.data.panel_frame_rate; 270 #else 271 //XXX: Remove reserved field usage on all baselines 272 //The reserved[3] field is used to store FPS by the driver. 273 float fps = info.reserved[3] & 0xFF; 274 #endif 275 ALOGI("using (fd=%d)\n" 276 "id = %s\n" 277 "xres = %d px\n" 278 "yres = %d px\n" 279 "xres_virtual = %d px\n" 280 "yres_virtual = %d px\n" 281 "bpp = %d\n" 282 "r = %2u:%u\n" 283 "g = %2u:%u\n" 284 "b = %2u:%u\n", 285 fd, 286 finfo.id, 287 info.xres, 288 info.yres, 289 info.xres_virtual, 290 info.yres_virtual, 291 info.bits_per_pixel, 292 info.red.offset, info.red.length, 293 info.green.offset, info.green.length, 294 info.blue.offset, info.blue.length 295 ); 296 297 ALOGI("width = %d mm (%f dpi)\n" 298 "height = %d mm (%f dpi)\n" 299 "refresh rate = %.2f Hz\n", 300 info.width, xdpi, 301 info.height, ydpi, 302 fps 303 ); 304 305 306 if (ioctl(fd, FBIOGET_FSCREENINFO, &finfo) == -1) { 307 close(fd); 308 return -errno; 309 } 310 311 if (finfo.smem_len <= 0) { 312 close(fd); 313 return -errno; 314 } 315 316 module->flags = flags; 317 module->info = info; 318 module->finfo = finfo; 319 module->xdpi = xdpi; 320 module->ydpi = ydpi; 321 module->fps = fps; 322 module->swapInterval = 1; 323 324 CALC_INIT(); 325 326 /* 327 * map the framebuffer 328 */ 329 330 module->numBuffers = info.yres_virtual / info.yres; 331 module->bufferMask = 0; 332 //adreno needs page aligned offsets. Align the fbsize to pagesize. 333 unsigned int fbSize = roundUpToPageSize(finfo.line_length * info.yres)* 334 module->numBuffers; 335 void* vaddr = mmap(0, fbSize, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0); 336 if (vaddr == MAP_FAILED) { 337 ALOGE("Error mapping the framebuffer (%s)", strerror(errno)); 338 close(fd); 339 return -errno; 340 } 341 //store the framebuffer fd in the ctx 342 ctx->fbFd = fd; 343 #ifdef MSMFB_METADATA_GET 344 memset(&metadata, 0 , sizeof(metadata)); 345 metadata.op = metadata_op_get_ion_fd; 346 // get the ION fd for the framebuffer, as GPU needs ION fd 347 if (ioctl(fd, MSMFB_METADATA_GET, &metadata) == -1) { 348 ALOGE("Error getting ION fd (%s)", strerror(errno)); 349 close(fd); 350 return -errno; 351 } 352 if(metadata.data.fbmem_ionfd < 0) { 353 ALOGE("Error: Ioctl returned invalid ION fd = %d", 354 metadata.data.fbmem_ionfd); 355 close(fd); 356 return -errno; 357 } 358 fd = metadata.data.fbmem_ionfd; 359 #endif 360 // Create framebuffer handle using the ION fd 361 module->framebuffer = new private_handle_t(fd, fbSize, 362 private_handle_t::PRIV_FLAGS_USES_ION, 363 BUFFER_TYPE_UI, 364 module->fbFormat, info.xres, info.yres); 365 module->framebuffer->base = uint64_t(vaddr); 366 memset(vaddr, 0, fbSize); 367 //Enable vsync 368 int enable = 1; 369 ioctl(ctx->fbFd, MSMFB_OVERLAY_VSYNC_CTRL, &enable); 370 return 0; 371 } 372 373 static int mapFrameBuffer(framebuffer_device_t *dev) 374 { 375 int err = -1; 376 char property[PROPERTY_VALUE_MAX]; 377 if((property_get("debug.gralloc.map_fb_memory", property, NULL) > 0) && 378 (!strncmp(property, "1", PROPERTY_VALUE_MAX ) || 379 (!strncasecmp(property,"true", PROPERTY_VALUE_MAX )))) { 380 private_module_t* module = 381 reinterpret_cast<private_module_t*>(dev->common.module); 382 pthread_mutex_lock(&module->lock); 383 err = mapFrameBufferLocked(dev); 384 pthread_mutex_unlock(&module->lock); 385 } 386 return err; 387 } 388 389 /*****************************************************************************/ 390 391 static int fb_close(struct hw_device_t *dev) 392 { 393 fb_context_t* ctx = (fb_context_t*)dev; 394 if (ctx) { 395 #ifdef MSMFB_METADATA_GET 396 if(ctx->fbFd >=0) { 397 close(ctx->fbFd); 398 } 399 #endif 400 //Hack until fbdev is removed. Framework could close this causing hwc a 401 //pain. 402 //free(ctx); 403 } 404 return 0; 405 } 406 407 int fb_device_open(hw_module_t const* module, const char* name, 408 hw_device_t** device) 409 { 410 int status = -EINVAL; 411 if (!strcmp(name, GRALLOC_HARDWARE_FB0)) { 412 alloc_device_t* gralloc_device; 413 status = gralloc_open(module, &gralloc_device); 414 if (status < 0) 415 return status; 416 417 /* initialize our state here */ 418 fb_context_t *dev = (fb_context_t*)malloc(sizeof(*dev)); 419 if(dev == NULL) { 420 gralloc_close(gralloc_device); 421 return status; 422 } 423 memset(dev, 0, sizeof(*dev)); 424 425 /* initialize the procs */ 426 dev->device.common.tag = HARDWARE_DEVICE_TAG; 427 dev->device.common.version = 0; 428 dev->device.common.module = const_cast<hw_module_t*>(module); 429 dev->device.common.close = fb_close; 430 dev->device.setSwapInterval = fb_setSwapInterval; 431 dev->device.post = fb_post; 432 dev->device.setUpdateRect = 0; 433 dev->device.compositionComplete = fb_compositionComplete; 434 435 status = mapFrameBuffer((framebuffer_device_t*)dev); 436 private_module_t* m = (private_module_t*)dev->device.common.module; 437 if (status >= 0) { 438 int stride = m->finfo.line_length / (m->info.bits_per_pixel >> 3); 439 const_cast<uint32_t&>(dev->device.flags) = 0; 440 const_cast<uint32_t&>(dev->device.width) = m->info.xres; 441 const_cast<uint32_t&>(dev->device.height) = m->info.yres; 442 const_cast<int&>(dev->device.stride) = stride; 443 const_cast<int&>(dev->device.format) = m->fbFormat; 444 const_cast<float&>(dev->device.xdpi) = m->xdpi; 445 const_cast<float&>(dev->device.ydpi) = m->ydpi; 446 const_cast<float&>(dev->device.fps) = m->fps; 447 const_cast<int&>(dev->device.minSwapInterval) = 448 PRIV_MIN_SWAP_INTERVAL; 449 const_cast<int&>(dev->device.maxSwapInterval) = 450 PRIV_MAX_SWAP_INTERVAL; 451 const_cast<int&>(dev->device.numFramebuffers) = m->numBuffers; 452 dev->device.setUpdateRect = 0; 453 454 *device = &dev->device.common; 455 } 456 457 // Close the gralloc module 458 gralloc_close(gralloc_device); 459 } 460 return status; 461 } 462
