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