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