1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * Copyright (c) 2010-2012,2014 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 }; 62 63 64 static int fb_setSwapInterval(struct framebuffer_device_t* dev, 65 int interval) 66 { 67 //XXX: Get the value here and implement along with 68 //single vsync in HWC 69 char pval[PROPERTY_VALUE_MAX]; 70 property_get("debug.egl.swapinterval", pval, "-1"); 71 int property_interval = atoi(pval); 72 if (property_interval >= 0) 73 interval = property_interval; 74 75 private_module_t* m = reinterpret_cast<private_module_t*>( 76 dev->common.module); 77 if (interval < dev->minSwapInterval || interval > dev->maxSwapInterval) 78 return -EINVAL; 79 80 m->swapInterval = interval; 81 return 0; 82 } 83 84 static int fb_post(struct framebuffer_device_t* dev, buffer_handle_t buffer) 85 { 86 private_module_t* m = 87 reinterpret_cast<private_module_t*>(dev->common.module); 88 private_handle_t *hnd = static_cast<private_handle_t*> 89 (const_cast<native_handle_t*>(buffer)); 90 const unsigned int offset = (unsigned int) (hnd->base - 91 m->framebuffer->base); 92 m->info.activate = FB_ACTIVATE_VBL; 93 m->info.yoffset = (int)(offset / m->finfo.line_length); 94 if (ioctl(m->framebuffer->fd, FBIOPUT_VSCREENINFO, &m->info) == -1) { 95 ALOGE("%s: FBIOPUT_VSCREENINFO for primary failed, str: %s", 96 __FUNCTION__, strerror(errno)); 97 return -errno; 98 } 99 return 0; 100 } 101 102 static int fb_compositionComplete(struct framebuffer_device_t* dev) 103 { 104 // TODO: Properly implement composition complete callback 105 if(!dev) { 106 return -1; 107 } 108 glFinish(); 109 110 return 0; 111 } 112 113 int mapFrameBufferLocked(struct private_module_t* module) 114 { 115 // already initialized... 116 if (module->framebuffer) { 117 return 0; 118 } 119 char const * const device_template[] = { 120 "/dev/graphics/fb%u", 121 "/dev/fb%u", 122 0 }; 123 124 int fd = -1; 125 int i=0; 126 char name[64]; 127 char property[PROPERTY_VALUE_MAX]; 128 129 while ((fd==-1) && device_template[i]) { 130 snprintf(name, 64, device_template[i], 0); 131 fd = open(name, O_RDWR, 0); 132 i++; 133 } 134 if (fd < 0) 135 return -errno; 136 137 memset(&module->commit, 0, sizeof(struct mdp_display_commit)); 138 139 struct fb_fix_screeninfo finfo; 140 if (ioctl(fd, FBIOGET_FSCREENINFO, &finfo) == -1) { 141 close(fd); 142 return -errno; 143 } 144 145 struct fb_var_screeninfo info; 146 if (ioctl(fd, FBIOGET_VSCREENINFO, &info) == -1) { 147 close(fd); 148 return -errno; 149 } 150 151 info.reserved[0] = 0; 152 info.reserved[1] = 0; 153 info.reserved[2] = 0; 154 info.xoffset = 0; 155 info.yoffset = 0; 156 info.activate = FB_ACTIVATE_NOW; 157 158 /* Interpretation of offset for color fields: All offsets are from the 159 * right, inside a "pixel" value, which is exactly 'bits_per_pixel' wide 160 * (means: you can use the offset as right argument to <<). A pixel 161 * afterwards is a bit stream and is written to video memory as that 162 * unmodified. This implies big-endian byte order if bits_per_pixel is 163 * greater than 8. 164 */ 165 166 if(info.bits_per_pixel == 32) { 167 /* 168 * Explicitly request RGBA_8888 169 */ 170 info.bits_per_pixel = 32; 171 info.red.offset = 24; 172 info.red.length = 8; 173 info.green.offset = 16; 174 info.green.length = 8; 175 info.blue.offset = 8; 176 info.blue.length = 8; 177 info.transp.offset = 0; 178 info.transp.length = 8; 179 180 /* Note: the GL driver does not have a r=8 g=8 b=8 a=0 config, so if we 181 * do not use the MDP for composition (i.e. hw composition == 0), ask 182 * for RGBA instead of RGBX. */ 183 if (property_get("debug.sf.hw", property, NULL) > 0 && 184 atoi(property) == 0) 185 module->fbFormat = HAL_PIXEL_FORMAT_RGBX_8888; 186 else if(property_get("debug.composition.type", property, NULL) > 0 && 187 (strncmp(property, "mdp", 3) == 0)) 188 module->fbFormat = HAL_PIXEL_FORMAT_RGBX_8888; 189 else 190 module->fbFormat = HAL_PIXEL_FORMAT_RGBA_8888; 191 } else { 192 /* 193 * Explicitly request 5/6/5 194 */ 195 info.bits_per_pixel = 16; 196 info.red.offset = 11; 197 info.red.length = 5; 198 info.green.offset = 5; 199 info.green.length = 6; 200 info.blue.offset = 0; 201 info.blue.length = 5; 202 info.transp.offset = 0; 203 info.transp.length = 0; 204 module->fbFormat = HAL_PIXEL_FORMAT_RGB_565; 205 } 206 207 //adreno needs 4k aligned offsets. Max hole size is 4096-1 208 unsigned int size = roundUpToPageSize(info.yres * info.xres * 209 (info.bits_per_pixel/8)); 210 211 /* 212 * Request NUM_BUFFERS screens (at least 2 for page flipping) 213 */ 214 int numberOfBuffers = (int)(finfo.smem_len/size); 215 ALOGV("num supported framebuffers in kernel = %d", numberOfBuffers); 216 217 if (property_get("debug.gr.numframebuffers", property, NULL) > 0) { 218 int num = atoi(property); 219 if ((num >= NUM_FRAMEBUFFERS_MIN) && (num <= NUM_FRAMEBUFFERS_MAX)) { 220 numberOfBuffers = num; 221 } 222 } 223 if (numberOfBuffers > NUM_FRAMEBUFFERS_MAX) 224 numberOfBuffers = NUM_FRAMEBUFFERS_MAX; 225 226 ALOGV("We support %d buffers", numberOfBuffers); 227 228 //consider the included hole by 4k alignment 229 uint32_t line_length = (info.xres * info.bits_per_pixel / 8); 230 info.yres_virtual = (uint32_t) ((size * numberOfBuffers) / line_length); 231 232 uint32_t flags = PAGE_FLIP; 233 234 if (info.yres_virtual < ((size * 2) / line_length) ) { 235 // we need at least 2 for page-flipping 236 info.yres_virtual = (int)(size / line_length); 237 flags &= ~PAGE_FLIP; 238 ALOGW("page flipping not supported (yres_virtual=%d, requested=%d)", 239 info.yres_virtual, info.yres*2); 240 } 241 242 if (ioctl(fd, FBIOGET_VSCREENINFO, &info) == -1) { 243 close(fd); 244 return -errno; 245 } 246 247 if (int(info.width) <= 0 || int(info.height) <= 0) { 248 // the driver doesn't return that information 249 // default to 160 dpi 250 info.width = (uint32_t)(((float)(info.xres) * 25.4f)/160.0f + 0.5f); 251 info.height = (uint32_t)(((float)(info.yres) * 25.4f)/160.0f + 0.5f); 252 } 253 254 float xdpi = ((float)(info.xres) * 25.4f) / (float)info.width; 255 float ydpi = ((float)(info.yres) * 25.4f) / (float)info.height; 256 257 #ifdef MSMFB_METADATA_GET 258 struct msmfb_metadata metadata; 259 memset(&metadata, 0 , sizeof(metadata)); 260 metadata.op = metadata_op_frame_rate; 261 if (ioctl(fd, MSMFB_METADATA_GET, &metadata) == -1) { 262 ALOGE("Error retrieving panel frame rate"); 263 close(fd); 264 return -errno; 265 } 266 float fps = (float)metadata.data.panel_frame_rate; 267 #else 268 //XXX: Remove reserved field usage on all baselines 269 //The reserved[3] field is used to store FPS by the driver. 270 float fps = info.reserved[3] & 0xFF; 271 #endif 272 ALOGI("using (fd=%d)\n" 273 "id = %s\n" 274 "xres = %d px\n" 275 "yres = %d px\n" 276 "xres_virtual = %d px\n" 277 "yres_virtual = %d px\n" 278 "bpp = %d\n" 279 "r = %2u:%u\n" 280 "g = %2u:%u\n" 281 "b = %2u:%u\n", 282 fd, 283 finfo.id, 284 info.xres, 285 info.yres, 286 info.xres_virtual, 287 info.yres_virtual, 288 info.bits_per_pixel, 289 info.red.offset, info.red.length, 290 info.green.offset, info.green.length, 291 info.blue.offset, info.blue.length 292 ); 293 294 ALOGI("width = %d mm (%f dpi)\n" 295 "height = %d mm (%f dpi)\n" 296 "refresh rate = %.2f Hz\n", 297 info.width, xdpi, 298 info.height, ydpi, 299 fps 300 ); 301 302 303 if (ioctl(fd, FBIOGET_FSCREENINFO, &finfo) == -1) { 304 close(fd); 305 return -errno; 306 } 307 308 if (finfo.smem_len <= 0) { 309 close(fd); 310 return -errno; 311 } 312 313 module->flags = flags; 314 module->info = info; 315 module->finfo = finfo; 316 module->xdpi = xdpi; 317 module->ydpi = ydpi; 318 module->fps = fps; 319 module->swapInterval = 1; 320 321 CALC_INIT(); 322 323 /* 324 * map the framebuffer 325 */ 326 327 module->numBuffers = info.yres_virtual / info.yres; 328 module->bufferMask = 0; 329 //adreno needs page aligned offsets. Align the fbsize to pagesize. 330 unsigned int fbSize = roundUpToPageSize(finfo.line_length * info.yres)* 331 module->numBuffers; 332 module->framebuffer = new private_handle_t(fd, fbSize, 333 private_handle_t::PRIV_FLAGS_USES_ION, 334 BUFFER_TYPE_UI, 335 module->fbFormat, info.xres, info.yres); 336 void* vaddr = mmap(0, fbSize, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0); 337 if (vaddr == MAP_FAILED) { 338 ALOGE("Error mapping the framebuffer (%s)", strerror(errno)); 339 close(fd); 340 return -errno; 341 } 342 module->framebuffer->base = uint64_t(vaddr); 343 memset(vaddr, 0, fbSize); 344 //Enable vsync 345 int enable = 1; 346 ioctl(module->framebuffer->fd, MSMFB_OVERLAY_VSYNC_CTRL, 347 &enable); 348 return 0; 349 } 350 351 static int mapFrameBuffer(struct private_module_t* module) 352 { 353 int err = -1; 354 char property[PROPERTY_VALUE_MAX]; 355 if((property_get("debug.gralloc.map_fb_memory", property, NULL) > 0) && 356 (!strncmp(property, "1", PROPERTY_VALUE_MAX ) || 357 (!strncasecmp(property,"true", PROPERTY_VALUE_MAX )))) { 358 pthread_mutex_lock(&module->lock); 359 err = mapFrameBufferLocked(module); 360 pthread_mutex_unlock(&module->lock); 361 } 362 return err; 363 } 364 365 /*****************************************************************************/ 366 367 static int fb_close(struct hw_device_t *dev) 368 { 369 fb_context_t* ctx = (fb_context_t*)dev; 370 if (ctx) { 371 //Hack until fbdev is removed. Framework could close this causing hwc a 372 //pain. 373 //free(ctx); 374 } 375 return 0; 376 } 377 378 int fb_device_open(hw_module_t const* module, const char* name, 379 hw_device_t** device) 380 { 381 int status = -EINVAL; 382 if (!strcmp(name, GRALLOC_HARDWARE_FB0)) { 383 alloc_device_t* gralloc_device; 384 status = gralloc_open(module, &gralloc_device); 385 if (status < 0) 386 return status; 387 388 /* initialize our state here */ 389 fb_context_t *dev = (fb_context_t*)malloc(sizeof(*dev)); 390 if(dev == NULL) { 391 gralloc_close(gralloc_device); 392 return status; 393 } 394 memset(dev, 0, sizeof(*dev)); 395 396 /* initialize the procs */ 397 dev->device.common.tag = HARDWARE_DEVICE_TAG; 398 dev->device.common.version = 0; 399 dev->device.common.module = const_cast<hw_module_t*>(module); 400 dev->device.common.close = fb_close; 401 dev->device.setSwapInterval = fb_setSwapInterval; 402 dev->device.post = fb_post; 403 dev->device.setUpdateRect = 0; 404 dev->device.compositionComplete = fb_compositionComplete; 405 406 private_module_t* m = (private_module_t*)module; 407 status = mapFrameBuffer(m); 408 if (status >= 0) { 409 int stride = m->finfo.line_length / (m->info.bits_per_pixel >> 3); 410 const_cast<uint32_t&>(dev->device.flags) = 0; 411 const_cast<uint32_t&>(dev->device.width) = m->info.xres; 412 const_cast<uint32_t&>(dev->device.height) = m->info.yres; 413 const_cast<int&>(dev->device.stride) = stride; 414 const_cast<int&>(dev->device.format) = m->fbFormat; 415 const_cast<float&>(dev->device.xdpi) = m->xdpi; 416 const_cast<float&>(dev->device.ydpi) = m->ydpi; 417 const_cast<float&>(dev->device.fps) = m->fps; 418 const_cast<int&>(dev->device.minSwapInterval) = 419 PRIV_MIN_SWAP_INTERVAL; 420 const_cast<int&>(dev->device.maxSwapInterval) = 421 PRIV_MAX_SWAP_INTERVAL; 422 const_cast<int&>(dev->device.numFramebuffers) = m->numBuffers; 423 dev->device.setUpdateRect = 0; 424 425 *device = &dev->device.common; 426 } 427 428 // Close the gralloc module 429 gralloc_close(gralloc_device); 430 } 431 return status; 432 } 433
