| /* |
| * Copyright (C) 2008 The Android Open Source Project |
| * Copyright (c) 2010-2014 The Linux Foundation. All rights reserved. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include <sys/mman.h> |
| |
| #include <cutils/log.h> |
| #include <cutils/properties.h> |
| #include <dlfcn.h> |
| |
| #include <hardware/hardware.h> |
| |
| #include <fcntl.h> |
| #include <errno.h> |
| #include <sys/ioctl.h> |
| #include <string.h> |
| #include <stdlib.h> |
| #include <pthread.h> |
| #include <cutils/atomic.h> |
| |
| #include <linux/fb.h> |
| #include <linux/msm_mdp.h> |
| |
| #include <GLES/gl.h> |
| |
| #include "gralloc_priv.h" |
| #include "fb_priv.h" |
| #include "gr.h" |
| #include <cutils/properties.h> |
| #include <profiler.h> |
| |
| #define EVEN_OUT(x) if (x & 0x0001) {x--;} |
| /** min of int a, b */ |
| static inline int min(int a, int b) { |
| return (a<b) ? a : b; |
| } |
| /** max of int a, b */ |
| static inline int max(int a, int b) { |
| return (a>b) ? a : b; |
| } |
| |
| enum { |
| PAGE_FLIP = 0x00000001, |
| }; |
| |
| struct fb_context_t { |
| framebuffer_device_t device; |
| //fd - which is returned on open |
| int fbFd; |
| }; |
| |
| static int fb_setSwapInterval(struct framebuffer_device_t* dev, |
| int interval) |
| { |
| //XXX: Get the value here and implement along with |
| //single vsync in HWC |
| char pval[PROPERTY_VALUE_MAX]; |
| property_get("debug.egl.swapinterval", pval, "-1"); |
| int property_interval = atoi(pval); |
| if (property_interval >= 0) |
| interval = property_interval; |
| |
| private_module_t* m = reinterpret_cast<private_module_t*>( |
| dev->common.module); |
| if (interval < dev->minSwapInterval || interval > dev->maxSwapInterval) |
| return -EINVAL; |
| |
| m->swapInterval = interval; |
| return 0; |
| } |
| |
| static int fb_post(struct framebuffer_device_t* dev, buffer_handle_t buffer) |
| { |
| private_module_t* m = |
| reinterpret_cast<private_module_t*>(dev->common.module); |
| private_handle_t *hnd = static_cast<private_handle_t*> |
| (const_cast<native_handle_t*>(buffer)); |
| fb_context_t *ctx = reinterpret_cast<fb_context_t*>(dev); |
| const unsigned int offset = (unsigned int) (hnd->base - |
| m->framebuffer->base); |
| m->info.activate = FB_ACTIVATE_VBL; |
| m->info.yoffset = (int)(offset / m->finfo.line_length); |
| if (ioctl(ctx->fbFd, FBIOPUT_VSCREENINFO, &m->info) == -1) { |
| ALOGE("%s: FBIOPUT_VSCREENINFO for primary failed, str: %s", |
| __FUNCTION__, strerror(errno)); |
| return -errno; |
| } |
| return 0; |
| } |
| |
| static int fb_compositionComplete(struct framebuffer_device_t* dev) |
| { |
| // TODO: Properly implement composition complete callback |
| if(!dev) { |
| return -1; |
| } |
| glFinish(); |
| |
| return 0; |
| } |
| |
| int mapFrameBufferLocked(framebuffer_device_t *dev) |
| { |
| private_module_t* module = |
| reinterpret_cast<private_module_t*>(dev->common.module); |
| fb_context_t *ctx = reinterpret_cast<fb_context_t*>(dev); |
| // already initialized... |
| if (module->framebuffer) { |
| return 0; |
| } |
| char const * const device_template[] = { |
| "/dev/graphics/fb%u", |
| "/dev/fb%u", |
| 0 }; |
| |
| int fd = -1; |
| int i=0; |
| char name[64]; |
| char property[PROPERTY_VALUE_MAX]; |
| |
| while ((fd==-1) && device_template[i]) { |
| snprintf(name, 64, device_template[i], 0); |
| fd = open(name, O_RDWR, 0); |
| i++; |
| } |
| if (fd < 0) |
| return -errno; |
| |
| struct fb_fix_screeninfo finfo; |
| if (ioctl(fd, FBIOGET_FSCREENINFO, &finfo) == -1) { |
| close(fd); |
| return -errno; |
| } |
| |
| struct fb_var_screeninfo info; |
| if (ioctl(fd, FBIOGET_VSCREENINFO, &info) == -1) { |
| close(fd); |
| return -errno; |
| } |
| |
| info.reserved[0] = 0; |
| info.reserved[1] = 0; |
| info.reserved[2] = 0; |
| info.xoffset = 0; |
| info.yoffset = 0; |
| info.activate = FB_ACTIVATE_NOW; |
| |
| /* Interpretation of offset for color fields: All offsets are from the |
| * right, inside a "pixel" value, which is exactly 'bits_per_pixel' wide |
| * (means: you can use the offset as right argument to <<). A pixel |
| * afterwards is a bit stream and is written to video memory as that |
| * unmodified. This implies big-endian byte order if bits_per_pixel is |
| * greater than 8. |
| */ |
| |
| if(info.bits_per_pixel == 32) { |
| /* |
| * Explicitly request RGBA_8888 |
| */ |
| info.bits_per_pixel = 32; |
| info.red.offset = 24; |
| info.red.length = 8; |
| info.green.offset = 16; |
| info.green.length = 8; |
| info.blue.offset = 8; |
| info.blue.length = 8; |
| info.transp.offset = 0; |
| info.transp.length = 8; |
| |
| /* Note: the GL driver does not have a r=8 g=8 b=8 a=0 config, so if we |
| * do not use the MDP for composition (i.e. hw composition == 0), ask |
| * for RGBA instead of RGBX. */ |
| if (property_get("debug.sf.hw", property, NULL) > 0 && |
| atoi(property) == 0) |
| module->fbFormat = HAL_PIXEL_FORMAT_RGBX_8888; |
| else if(property_get("debug.composition.type", property, NULL) > 0 && |
| (strncmp(property, "mdp", 3) == 0)) |
| module->fbFormat = HAL_PIXEL_FORMAT_RGBX_8888; |
| else |
| module->fbFormat = HAL_PIXEL_FORMAT_RGBA_8888; |
| } else { |
| /* |
| * Explicitly request 5/6/5 |
| */ |
| info.bits_per_pixel = 16; |
| info.red.offset = 11; |
| info.red.length = 5; |
| info.green.offset = 5; |
| info.green.length = 6; |
| info.blue.offset = 0; |
| info.blue.length = 5; |
| info.transp.offset = 0; |
| info.transp.length = 0; |
| module->fbFormat = HAL_PIXEL_FORMAT_RGB_565; |
| } |
| |
| //adreno needs 4k aligned offsets. Max hole size is 4096-1 |
| unsigned int size = roundUpToPageSize(info.yres * info.xres * |
| (info.bits_per_pixel/8)); |
| |
| /* |
| * Request NUM_BUFFERS screens (at least 2 for page flipping) |
| */ |
| int numberOfBuffers = (int)(finfo.smem_len/size); |
| ALOGV("num supported framebuffers in kernel = %d", numberOfBuffers); |
| |
| if (property_get("debug.gr.numframebuffers", property, NULL) > 0) { |
| int num = atoi(property); |
| if ((num >= NUM_FRAMEBUFFERS_MIN) && (num <= NUM_FRAMEBUFFERS_MAX)) { |
| numberOfBuffers = num; |
| } |
| } |
| if (numberOfBuffers > NUM_FRAMEBUFFERS_MAX) |
| numberOfBuffers = NUM_FRAMEBUFFERS_MAX; |
| |
| ALOGV("We support %d buffers", numberOfBuffers); |
| |
| //consider the included hole by 4k alignment |
| uint32_t line_length = (info.xres * info.bits_per_pixel / 8); |
| info.yres_virtual = (uint32_t) ((size * numberOfBuffers) / line_length); |
| |
| uint32_t flags = PAGE_FLIP; |
| |
| if (info.yres_virtual < ((size * 2) / line_length) ) { |
| // we need at least 2 for page-flipping |
| info.yres_virtual = (int)(size / line_length); |
| flags &= ~PAGE_FLIP; |
| ALOGW("page flipping not supported (yres_virtual=%d, requested=%d)", |
| info.yres_virtual, info.yres*2); |
| } |
| |
| if (ioctl(fd, FBIOGET_VSCREENINFO, &info) == -1) { |
| close(fd); |
| return -errno; |
| } |
| |
| if (int(info.width) <= 0 || int(info.height) <= 0) { |
| // the driver doesn't return that information |
| // default to 160 dpi |
| info.width = (uint32_t)(((float)(info.xres) * 25.4f)/160.0f + 0.5f); |
| info.height = (uint32_t)(((float)(info.yres) * 25.4f)/160.0f + 0.5f); |
| } |
| |
| float xdpi = ((float)(info.xres) * 25.4f) / (float)info.width; |
| float ydpi = ((float)(info.yres) * 25.4f) / (float)info.height; |
| |
| #ifdef MSMFB_METADATA_GET |
| struct msmfb_metadata metadata; |
| memset(&metadata, 0 , sizeof(metadata)); |
| metadata.op = metadata_op_frame_rate; |
| if (ioctl(fd, MSMFB_METADATA_GET, &metadata) == -1) { |
| ALOGE("Error retrieving panel frame rate"); |
| close(fd); |
| return -errno; |
| } |
| float fps = (float)metadata.data.panel_frame_rate; |
| #else |
| //XXX: Remove reserved field usage on all baselines |
| //The reserved[3] field is used to store FPS by the driver. |
| float fps = info.reserved[3] & 0xFF; |
| #endif |
| ALOGI("using (fd=%d)\n" |
| "id = %s\n" |
| "xres = %d px\n" |
| "yres = %d px\n" |
| "xres_virtual = %d px\n" |
| "yres_virtual = %d px\n" |
| "bpp = %d\n" |
| "r = %2u:%u\n" |
| "g = %2u:%u\n" |
| "b = %2u:%u\n", |
| fd, |
| finfo.id, |
| info.xres, |
| info.yres, |
| info.xres_virtual, |
| info.yres_virtual, |
| info.bits_per_pixel, |
| info.red.offset, info.red.length, |
| info.green.offset, info.green.length, |
| info.blue.offset, info.blue.length |
| ); |
| |
| ALOGI("width = %d mm (%f dpi)\n" |
| "height = %d mm (%f dpi)\n" |
| "refresh rate = %.2f Hz\n", |
| info.width, xdpi, |
| info.height, ydpi, |
| fps |
| ); |
| |
| |
| if (ioctl(fd, FBIOGET_FSCREENINFO, &finfo) == -1) { |
| close(fd); |
| return -errno; |
| } |
| |
| if (finfo.smem_len <= 0) { |
| close(fd); |
| return -errno; |
| } |
| |
| module->flags = flags; |
| module->info = info; |
| module->finfo = finfo; |
| module->xdpi = xdpi; |
| module->ydpi = ydpi; |
| module->fps = fps; |
| module->swapInterval = 1; |
| |
| CALC_INIT(); |
| |
| /* |
| * map the framebuffer |
| */ |
| |
| module->numBuffers = info.yres_virtual / info.yres; |
| module->bufferMask = 0; |
| //adreno needs page aligned offsets. Align the fbsize to pagesize. |
| unsigned int fbSize = roundUpToPageSize(finfo.line_length * info.yres)* |
| module->numBuffers; |
| void* vaddr = mmap(0, fbSize, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0); |
| if (vaddr == MAP_FAILED) { |
| ALOGE("Error mapping the framebuffer (%s)", strerror(errno)); |
| close(fd); |
| return -errno; |
| } |
| //store the framebuffer fd in the ctx |
| ctx->fbFd = fd; |
| #ifdef MSMFB_METADATA_GET |
| memset(&metadata, 0 , sizeof(metadata)); |
| metadata.op = metadata_op_get_ion_fd; |
| // get the ION fd for the framebuffer, as GPU needs ION fd |
| if (ioctl(fd, MSMFB_METADATA_GET, &metadata) == -1) { |
| ALOGE("Error getting ION fd (%s)", strerror(errno)); |
| close(fd); |
| return -errno; |
| } |
| if(metadata.data.fbmem_ionfd < 0) { |
| ALOGE("Error: Ioctl returned invalid ION fd = %d", |
| metadata.data.fbmem_ionfd); |
| close(fd); |
| return -errno; |
| } |
| fd = metadata.data.fbmem_ionfd; |
| #endif |
| // Create framebuffer handle using the ION fd |
| module->framebuffer = new private_handle_t(fd, fbSize, |
| private_handle_t::PRIV_FLAGS_USES_ION, |
| BUFFER_TYPE_UI, |
| module->fbFormat, info.xres, info.yres); |
| module->framebuffer->base = uint64_t(vaddr); |
| memset(vaddr, 0, fbSize); |
| //Enable vsync |
| int enable = 1; |
| ioctl(ctx->fbFd, MSMFB_OVERLAY_VSYNC_CTRL, &enable); |
| return 0; |
| } |
| |
| static int mapFrameBuffer(framebuffer_device_t *dev) |
| { |
| int err = -1; |
| char property[PROPERTY_VALUE_MAX]; |
| if((property_get("debug.gralloc.map_fb_memory", property, NULL) > 0) && |
| (!strncmp(property, "1", PROPERTY_VALUE_MAX ) || |
| (!strncasecmp(property,"true", PROPERTY_VALUE_MAX )))) { |
| private_module_t* module = |
| reinterpret_cast<private_module_t*>(dev->common.module); |
| pthread_mutex_lock(&module->lock); |
| err = mapFrameBufferLocked(dev); |
| pthread_mutex_unlock(&module->lock); |
| } |
| return err; |
| } |
| |
| /*****************************************************************************/ |
| |
| static int fb_close(struct hw_device_t *dev) |
| { |
| fb_context_t* ctx = (fb_context_t*)dev; |
| if (ctx) { |
| #ifdef MSMFB_METADATA_GET |
| if(ctx->fbFd >=0) { |
| close(ctx->fbFd); |
| } |
| #endif |
| //Hack until fbdev is removed. Framework could close this causing hwc a |
| //pain. |
| //free(ctx); |
| } |
| return 0; |
| } |
| |
| int fb_device_open(hw_module_t const* module, const char* name, |
| hw_device_t** device) |
| { |
| int status = -EINVAL; |
| if (!strcmp(name, GRALLOC_HARDWARE_FB0)) { |
| alloc_device_t* gralloc_device; |
| status = gralloc_open(module, &gralloc_device); |
| if (status < 0) |
| return status; |
| |
| /* initialize our state here */ |
| fb_context_t *dev = (fb_context_t*)malloc(sizeof(*dev)); |
| if(dev == NULL) { |
| gralloc_close(gralloc_device); |
| return status; |
| } |
| memset(dev, 0, sizeof(*dev)); |
| |
| /* initialize the procs */ |
| dev->device.common.tag = HARDWARE_DEVICE_TAG; |
| dev->device.common.version = 0; |
| dev->device.common.module = const_cast<hw_module_t*>(module); |
| dev->device.common.close = fb_close; |
| dev->device.setSwapInterval = fb_setSwapInterval; |
| dev->device.post = fb_post; |
| dev->device.setUpdateRect = 0; |
| dev->device.compositionComplete = fb_compositionComplete; |
| |
| status = mapFrameBuffer((framebuffer_device_t*)dev); |
| private_module_t* m = (private_module_t*)dev->device.common.module; |
| if (status >= 0) { |
| int stride = m->finfo.line_length / (m->info.bits_per_pixel >> 3); |
| const_cast<uint32_t&>(dev->device.flags) = 0; |
| const_cast<uint32_t&>(dev->device.width) = m->info.xres; |
| const_cast<uint32_t&>(dev->device.height) = m->info.yres; |
| const_cast<int&>(dev->device.stride) = stride; |
| const_cast<int&>(dev->device.format) = m->fbFormat; |
| const_cast<float&>(dev->device.xdpi) = m->xdpi; |
| const_cast<float&>(dev->device.ydpi) = m->ydpi; |
| const_cast<float&>(dev->device.fps) = m->fps; |
| const_cast<int&>(dev->device.minSwapInterval) = |
| PRIV_MIN_SWAP_INTERVAL; |
| const_cast<int&>(dev->device.maxSwapInterval) = |
| PRIV_MAX_SWAP_INTERVAL; |
| const_cast<int&>(dev->device.numFramebuffers) = m->numBuffers; |
| dev->device.setUpdateRect = 0; |
| |
| *device = &dev->device.common; |
| } |
| |
| // Close the gralloc module |
| gralloc_close(gralloc_device); |
| } |
| return status; |
| } |