LineageOS/android_vendor_qcom_opensource_display-commonsys-intf
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d80a52cbf961d737f6f3beef47b868a581b98591
android_vendor_qcom_opensou…/libgralloc/framebuffer.cpp
Saurabh Shah d80a52cbf9 gralloc: Send first 2 FB buffers to carveout and next to IOMMU 
Gralloc uses the GRALLOC_USAGE_HW_FB flag to allocate memory from carveout.
This is fine for primary framebuffer, but for external framebuffer we need IOMMU
heap buffers, since the ioctls for external work with those.

Ideally, the primary buffers also need to come from IOMMU heap, which is ongoing
work. This patch allocates the first 2 FB buffer requests (assuming they are for
primary) from carveout and allocates all subsequent buffers from IOMMU heap.

Bug: 7124159
Change-Id: Ie53b2e1e7fcac136acd2d251f39cefe367fc7125
Signed-off-by: Iliyan Malchev <malchev@google.com>
2012-10-02 23:43:31 -07:00

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/*
* Copyright (C) 2008 The Android Open Source Project
* Copyright (c) 2010-2012 Code Aurora Forum. 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 <genlock.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,
LOCKED = 0x00000002
};
struct fb_context_t {
framebuffer_device_t device;
};
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;
fb_context_t* ctx = (fb_context_t*)dev;
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_setUpdateRect(struct framebuffer_device_t* dev,
int l, int t, int w, int h)
{
if (((w|h) <= 0) || ((l|t)<0))
return -EINVAL;
fb_context_t* ctx = (fb_context_t*)dev;
private_module_t* m = reinterpret_cast<private_module_t*>(
dev->common.module);
m->info.reserved[0] = 0x54445055; // "UPDT";
m->info.reserved[1] = (uint16_t)l | ((uint32_t)t << 16);
m->info.reserved[2] = (uint16_t)(l+w) | ((uint32_t)(t+h) << 16);
return 0;
}
static int fb_post(struct framebuffer_device_t* dev, buffer_handle_t buffer)
{
fb_context_t* ctx = (fb_context_t*) dev;
private_handle_t *hnd = static_cast<private_handle_t*>
(const_cast<native_handle_t*>(buffer));
private_module_t* m =
reinterpret_cast<private_module_t*>(dev->common.module);
if (hnd && hnd->flags & private_handle_t::PRIV_FLAGS_FRAMEBUFFER) {
m->info.activate = FB_ACTIVATE_VBL | FB_ACTIVATE_FORCE;
m->info.yoffset = hnd->offset / m->finfo.line_length;
m->commit.var = m->info;
if (ioctl(m->framebuffer->fd, MSMFB_DISPLAY_COMMIT, &m->commit) == -1) {
ALOGE("%s: FBIOPUT_VSCREENINFO failed for external, err: %s", __FUNCTION__,
strerror(errno));
return -errno;
}
}
return 0;
}
static int fb_compositionComplete(struct framebuffer_device_t* dev)
{
// TODO: Properly implement composition complete callback
glFinish();
return 0;
}
int mapFrameBufferLocked(struct private_module_t* module)
{
// 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;
memset(&module->fence, 0, sizeof(struct mdp_buf_fence));
memset(&module->commit, 0, sizeof(struct mdp_display_commit));
struct fb_fix_screeninfo finfo;
if (ioctl(fd, FBIOGET_FSCREENINFO, &finfo) == -1)
return -errno;
struct fb_var_screeninfo info;
if (ioctl(fd, FBIOGET_VSCREENINFO, &info) == -1)
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
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 = (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 = 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)
return -errno;
if (int(info.width) <= 0 || int(info.height) <= 0) {
// the driver doesn't return that information
// default to 160 dpi
info.width = ((info.xres * 25.4f)/160.0f + 0.5f);
info.height = ((info.yres * 25.4f)/160.0f + 0.5f);
}
float xdpi = (info.xres * 25.4f) / info.width;
float ydpi = (info.yres * 25.4f) / info.height;
//The reserved[3] field is used to store FPS by the driver.
float fps = info.reserved[3] & 0xFF;
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)
return -errno;
if (finfo.smem_len <= 0)
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
*/
int err;
module->numBuffers = 2;
module->bufferMask = 0;
//adreno needs page aligned offsets. Align the fbsize to pagesize.
size_t fbSize = roundUpToPageSize(finfo.line_length * info.yres)*
module->numBuffers;
module->framebuffer = new private_handle_t(fd, fbSize,
private_handle_t::PRIV_FLAGS_USES_PMEM,
BUFFER_TYPE_UI,
module->fbFormat, info.xres, info.yres);
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));
return -errno;
}
module->framebuffer->base = intptr_t(vaddr);
memset(vaddr, 0, fbSize);
module->currentOffset = 0;
module->fbPostDone = false;
pthread_mutex_init(&(module->fbPostLock), NULL);
pthread_cond_init(&(module->fbPostCond), NULL);
module->fbPanDone = false;
pthread_mutex_init(&(module->fbPanLock), NULL);
pthread_cond_init(&(module->fbPanCond), NULL);
return 0;
}
static int mapFrameBuffer(struct private_module_t* module)
{
pthread_mutex_lock(&module->lock);
int err = mapFrameBufferLocked(module);
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) {
//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));
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;
private_module_t* m = (private_module_t*)module;
status = mapFrameBuffer(m);
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;
if (m->finfo.reserved[0] == 0x5444 &&
m->finfo.reserved[1] == 0x5055) {
dev->device.setUpdateRect = fb_setUpdateRect;
ALOGD("UPDATE_ON_DEMAND supported");
}
*device = &dev->device.common;
}
// Close the gralloc module
gralloc_close(gralloc_device);
}
return status;
}
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