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