diff options
Diffstat (limited to 'drivers/staging/dream/include/linux/android_pmem.h')
| -rw-r--r-- | drivers/staging/dream/include/linux/android_pmem.h | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/drivers/staging/dream/include/linux/android_pmem.h b/drivers/staging/dream/include/linux/android_pmem.h new file mode 100644 index 000000000000..2fc05d7d335b --- /dev/null +++ b/drivers/staging/dream/include/linux/android_pmem.h @@ -0,0 +1,80 @@ +/* drivers/staging/dream/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_ + +#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) +/* This ioctl will allocate pmem space, backing the file, it will fail + * if the file already has an allocation, pass it the len as the argument + * to the ioctl */ +#define PMEM_ALLOCATE _IOW(PMEM_IOCTL_MAGIC, 5, unsigned int) +/* This will connect a one pmem file to another, pass the file that is already + * backed in memory as the argument to the ioctl + */ +#define PMEM_CONNECT _IOW(PMEM_IOCTL_MAGIC, 6, unsigned int) +/* Returns the total size of the pmem region it is sent to as a pmem_region + * struct (with offset set to 0). + */ +#define PMEM_GET_TOTAL_SIZE _IOW(PMEM_IOCTL_MAGIC, 7, unsigned int) +/* Revokes gpu registers and resets the gpu. Pass a pointer to the + * start of the mapped gpu regs (the vaddr returned by mmap) as the argument. + */ +#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) + +int get_pmem_file(int fd, unsigned long *start, unsigned long *vstart, + unsigned long *end, struct file **filp); +int get_pmem_user_addr(struct file *file, unsigned long *start, + unsigned long *end); +void put_pmem_file(struct file* file); +void flush_pmem_file(struct file *file, unsigned long start, unsigned long len); + +struct android_pmem_platform_data +{ + const char* name; + /* starting physical address of memory region */ + unsigned long start; + /* size of memory region */ + unsigned long size; + /* set to indicate the region should not be managed with an allocator */ + unsigned no_allocator; + /* set to indicate maps of this region should be cached, if a mix of + * cached and uncached is desired, set this and open the device with + * O_SYNC to get an uncached region */ + unsigned cached; + /* The MSM7k has bits to enable a write buffer in the bus controller*/ + unsigned buffered; +}; + +struct pmem_region { + unsigned long offset; + unsigned long len; +}; + +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 //_ANDROID_PPP_H_ + |