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