286 lines
6.6 KiB
C
286 lines
6.6 KiB
C
/*
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* Copyright (C) 2010 ARM Limited. All rights reserved.
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*
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* Copyright (C) 2008 The Android Open Source Project
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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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#ifndef GRALLOC_PRIV_H_
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#define GRALLOC_PRIV_H_
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#include <stdint.h>
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#include <pthread.h>
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#include <errno.h>
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#include <linux/fb.h>
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#include <linux/ion.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <sys/mman.h>
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#include <hardware/gralloc.h>
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#include <cutils/native_handle.h>
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#include "alloc_device.h"
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#include <utils/Log.h>
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#include "mali_gralloc_formats.h"
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#include "gralloc_helper.h"
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/* NOTE:
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* If your framebuffer device driver is integrated with dma_buf, you will have to
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* change this IOCTL definition to reflect your integration with the framebuffer
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* device.
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* Expected return value is a structure filled with a file descriptor
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* backing your framebuffer device memory.
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*/
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struct fb_dmabuf_export
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{
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__u32 fd;
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__u32 flags;
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};
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#define FBIOGET_DMABUF _IOR('F', 0x21, struct fb_dmabuf_export)
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/* the max string size of GRALLOC_HARDWARE_GPU0 & GRALLOC_HARDWARE_FB0
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* 8 is big enough for "gpu0" & "fb0" currently
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*/
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#define MALI_GRALLOC_HARDWARE_MAX_STR_LEN 8
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#define NUM_FB_BUFFERS 2
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/* Define number of shared file descriptors */
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#define GRALLOC_ARM_NUM_FDS 2
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#define NUM_INTS_IN_PRIVATE_HANDLE ((sizeof(struct private_handle_t) - sizeof(native_handle)) / sizeof(int) - sNumFds)
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#define SZ_4K 0x00001000
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#define SZ_2M 0x00200000
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typedef enum
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{
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MALI_YUV_NO_INFO,
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MALI_YUV_BT601_NARROW,
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MALI_YUV_BT601_WIDE,
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MALI_YUV_BT709_NARROW,
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MALI_YUV_BT709_WIDE
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} mali_gralloc_yuv_info;
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typedef enum
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{
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MALI_DPY_TYPE_UNKNOWN = 0,
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MALI_DPY_TYPE_CLCD,
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MALI_DPY_TYPE_HDLCD
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} mali_dpy_type;
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struct private_handle_t;
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struct private_module_t
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{
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gralloc_module_t base;
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struct private_handle_t* framebuffer;
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uint32_t flags;
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uint32_t numBuffers;
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uint32_t bufferMask;
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pthread_mutex_t lock;
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buffer_handle_t currentBuffer;
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int ion_client;
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mali_dpy_type dpy_type;
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struct fb_var_screeninfo info;
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struct fb_fix_screeninfo finfo;
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float xdpi;
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float ydpi;
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float fps;
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int swapInterval;
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#ifdef __cplusplus
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/* Never intended to be used from C code */
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enum
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{
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// flag to indicate we'll post this buffer
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PRIV_USAGE_LOCKED_FOR_POST = 0x80000000
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};
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#endif
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#ifdef __cplusplus
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/* default constructor */
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private_module_t();
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#endif
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};
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#ifndef __cplusplus
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/* C99 with pedantic don't allow anonymous unions which is used in below struct
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* Disable pedantic for C for this struct only.
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*/
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wpedantic"
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#endif
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#ifdef __cplusplus
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struct private_handle_t : public native_handle
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{
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#else
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struct private_handle_t
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{
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struct native_handle nativeHandle;
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#endif
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#ifdef __cplusplus
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/* Never intended to be used from C code */
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enum
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{
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PRIV_FLAGS_FRAMEBUFFER = 0x00000001,
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PRIV_FLAGS_USES_ION_COMPOUND_HEAP = 0x00000002,
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PRIV_FLAGS_USES_ION = 0x00000004,
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PRIV_FLAGS_USES_ION_DMA_HEAP = 0x00000008
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};
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enum
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{
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LOCK_STATE_WRITE = 1<<31,
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LOCK_STATE_MAPPED = 1<<30,
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LOCK_STATE_READ_MASK = 0x3FFFFFFF
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};
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#endif
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/*
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* Shared file descriptor for dma_buf sharing. This must be the first element in the
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* structure so that binder knows where it is and can properly share it between
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* processes.
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* DO NOT MOVE THIS ELEMENT!
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*/
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int share_fd;
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int share_attr_fd;
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ion_user_handle_t ion_hnd_UNUSED;
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// ints
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int magic;
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int req_format;
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uint64_t internal_format;
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int byte_stride;
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int flags;
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int usage;
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int size;
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int width;
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int height;
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int internalWidth;
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int internalHeight;
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int stride;
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union {
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void* base;
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uint64_t padding;
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};
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int lockState;
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int writeOwner;
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int pid_UNUSED;
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// locally mapped shared attribute area
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union {
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void* attr_base;
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uint64_t padding3;
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};
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mali_gralloc_yuv_info yuv_info;
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// Following members is for framebuffer only
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int shallow_fbdev_fd; // shallow copy, not dup'ed
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union {
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off_t offset;
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uint64_t padding4;
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};
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/*
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* min_pgsz denotes minimum phys_page size used by this buffer.
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* if buffer memory is physical contiguous set min_pgsz to buff->size
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* if not sure buff's real phys_page size, you can use SZ_4K for safe.
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*/
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int min_pgsz;
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#ifdef __cplusplus
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/*
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* We track the number of integers in the structure. There are 16 unconditional
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* integers (magic - pid, yuv_info, shallow_fbdev_fd and offset).
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* Note that the shallow_fbdev_fd element is
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* considered an int not an fd because it is not intended to be used outside the
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* surface flinger process. The GRALLOC_ARM_NUM_INTS variable is used to track the
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* number of integers that are conditionally included. Similar considerations apply
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* to the number of fds.
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*/
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static const int sNumFds = GRALLOC_ARM_NUM_FDS;
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static const int sMagic = 0x3141592;
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private_handle_t(int _flags, int _usage, int _size, void *_base, int lock_state, int fb_file, off_t fb_offset):
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share_fd(-1),
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share_attr_fd(-1),
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ion_hnd_UNUSED(-1),
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magic(sMagic),
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flags(_flags),
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usage(_usage),
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size(_size),
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width(0),
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height(0),
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stride(0),
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base(_base),
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lockState(lock_state),
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writeOwner(0),
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pid_UNUSED(-1),
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attr_base(MAP_FAILED),
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yuv_info(MALI_YUV_NO_INFO),
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shallow_fbdev_fd(fb_file),
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offset(fb_offset)
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{
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version = sizeof(native_handle);
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numFds = sNumFds;
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numInts = NUM_INTS_IN_PRIVATE_HANDLE;
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}
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~private_handle_t()
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{
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magic = 0;
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}
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bool usesPhysicallyContiguousMemory()
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{
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return (flags & PRIV_FLAGS_FRAMEBUFFER) ? true : false;
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}
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static int validate(const native_handle* h)
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{
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const private_handle_t* hnd = (const private_handle_t*)h;
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if (!h ||
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h->version != sizeof(native_handle) ||
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h->numInts != NUM_INTS_IN_PRIVATE_HANDLE ||
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h->numFds != sNumFds ||
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hnd->magic != sMagic)
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{
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return -EINVAL;
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}
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return 0;
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}
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static private_handle_t* dynamicCast(const native_handle* in)
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{
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if (validate(in) == 0)
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{
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return (private_handle_t*) in;
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}
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return NULL;
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}
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#endif
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};
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#ifndef __cplusplus
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/* Restore previous diagnostic for pedantic */
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#pragma GCC diagnostic pop
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#endif
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#endif /* GRALLOC_PRIV_H_ */
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