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/* include/linux/android_pmem.h
*
* Copyright (C) 2007 Google, Inc.
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#ifndef _ANDROID_PMEM_H_
#define _ANDROID_PMEM_H_
#include <linux/fs.h>
#define PMEM_KERNEL_TEST_MAGIC 0xc0
#define PMEM_KERNEL_TEST_NOMINAL_TEST_IOCTL \
_IO(PMEM_KERNEL_TEST_MAGIC, 1)
#define PMEM_KERNEL_TEST_ADVERSARIAL_TEST_IOCTL \
_IO(PMEM_KERNEL_TEST_MAGIC, 2)
#define PMEM_KERNEL_TEST_HUGE_ALLOCATION_TEST_IOCTL \
_IO(PMEM_KERNEL_TEST_MAGIC, 3)
#define PMEM_KERNEL_TEST_FREE_UNALLOCATED_TEST_IOCTL \
_IO(PMEM_KERNEL_TEST_MAGIC, 4)
#define PMEM_KERNEL_TEST_LARGE_REGION_NUMBER_TEST_IOCTL \
_IO(PMEM_KERNEL_TEST_MAGIC, 5)
#define PMEM_IOCTL_MAGIC 'p'
#define PMEM_GET_PHYS _IOW(PMEM_IOCTL_MAGIC, 1, unsigned int)
#define PMEM_MAP _IOW(PMEM_IOCTL_MAGIC, 2, unsigned int)
#define PMEM_GET_SIZE _IOW(PMEM_IOCTL_MAGIC, 3, unsigned int)
#define PMEM_UNMAP _IOW(PMEM_IOCTL_MAGIC, 4, unsigned int)
#define PMEM_ALLOCATE _IOW(PMEM_IOCTL_MAGIC, 5, unsigned int)
#define PMEM_CONNECT _IOW(PMEM_IOCTL_MAGIC, 6, unsigned int)
#define PMEM_GET_TOTAL_SIZE _IOW(PMEM_IOCTL_MAGIC, 7, unsigned int)
#define HW3D_REVOKE_GPU _IOW(PMEM_IOCTL_MAGIC, 8, unsigned int)
#define HW3D_GRANT_GPU _IOW(PMEM_IOCTL_MAGIC, 9, unsigned int)
#define HW3D_WAIT_FOR_INTERRUPT _IOW(PMEM_IOCTL_MAGIC, 10, unsigned int)
#define PMEM_CLEAN_INV_CACHES _IOW(PMEM_IOCTL_MAGIC, 11, unsigned int)
#define PMEM_CLEAN_CACHES _IOW(PMEM_IOCTL_MAGIC, 12, unsigned int)
#define PMEM_INV_CACHES _IOW(PMEM_IOCTL_MAGIC, 13, unsigned int)
#define PMEM_GET_FREE_SPACE _IOW(PMEM_IOCTL_MAGIC, 14, unsigned int)
#define PMEM_ALLOCATE_ALIGNED _IOW(PMEM_IOCTL_MAGIC, 15, unsigned int)
struct pmem_region {
unsigned long offset;
unsigned long len;
};
struct pmem_addr {
unsigned long vaddr;
unsigned long offset;
unsigned long length;
};
struct pmem_freespace {
unsigned long total;
unsigned long largest;
};
struct pmem_allocation {
unsigned long size;
unsigned int align;
};
#ifdef __KERNEL__
int get_pmem_file(unsigned int fd, unsigned long *start, unsigned long *vstart,
unsigned long *end, struct file **filp);
int get_pmem_fd(int fd, unsigned long *start, unsigned long *end);
int get_pmem_user_addr(struct file *file, unsigned long *start,
unsigned long *end);
void put_pmem_file(struct file* file);
void put_pmem_fd(int fd);
void flush_pmem_fd(int fd, unsigned long start, unsigned long len);
void flush_pmem_file(struct file *file, unsigned long start, unsigned long len);
int pmem_cache_maint(struct file *file, unsigned int cmd,
struct pmem_addr *pmem_addr);
enum pmem_allocator_type {
PMEM_ALLOCATORTYPE_BITMAP = 0,
PMEM_ALLOCATORTYPE_SYSTEM,
PMEM_ALLOCATORTYPE_ALLORNOTHING,
PMEM_ALLOCATORTYPE_BUDDYBESTFIT,
PMEM_ALLOCATORTYPE_MAX,
};
#define PMEM_KERNEL_EBI1_DATA_NAME "pmem_kernel_ebi1"
#define PMEM_KERNEL_SMI_DATA_NAME "pmem_kernel_smi"
struct android_pmem_platform_data
{
const char* name;
unsigned long start;
unsigned long size;
enum pmem_allocator_type allocator_type;
enum pmem_allocator_type no_allocator;
unsigned int quantum;
unsigned cached;
unsigned buffered;
unsigned memory_type;
int (*request_region)(void *);
int (*release_region)(void *);
void *(*setup_region)(void);
int map_on_demand;
int reusable;
};
int pmem_setup(struct android_pmem_platform_data *pdata,
long (*ioctl)(struct file *, unsigned int, unsigned long),
int (*release)(struct inode *, struct file *));
int pmem_remap(struct pmem_region *region, struct file *file,
unsigned operation);
#endif
#endif
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