git://bbs.cooldavid.org / net-next-2.6.git / blame
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1 | /* drivers/staging/dream/include/linux/android_pmem.h |
| 2 | * | |
| 3 | * Copyright (C) 2007 Google, Inc. | |
| 4 | * | |
| 5 | * This software is licensed under the terms of the GNU General Public | |
| 6 | * License version 2, as published by the Free Software Foundation, and | |
| 7 | * may be copied, distributed, and modified under those terms. | |
| 8 | * | |
| 9 | * This program is distributed in the hope that it will be useful, | |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 12 | * GNU General Public License for more details. | |
| 13 | * | |
| 14 | */ | |
| 15 | ||
| 16 | #ifndef _ANDROID_PMEM_H_ | |
| 17 | #define _ANDROID_PMEM_H_ | |
| 18 | ||
| 19 | #define PMEM_IOCTL_MAGIC 'p' | |
| 20 | #define PMEM_GET_PHYS _IOW(PMEM_IOCTL_MAGIC, 1, unsigned int) | |
| 21 | #define PMEM_MAP _IOW(PMEM_IOCTL_MAGIC, 2, unsigned int) | |
| 22 | #define PMEM_GET_SIZE _IOW(PMEM_IOCTL_MAGIC, 3, unsigned int) | |
| 23 | #define PMEM_UNMAP _IOW(PMEM_IOCTL_MAGIC, 4, unsigned int) | |
| 24 | /* This ioctl will allocate pmem space, backing the file, it will fail | |
| 25 | * if the file already has an allocation, pass it the len as the argument | |
| 26 | * to the ioctl */ | |
| 27 | #define PMEM_ALLOCATE _IOW(PMEM_IOCTL_MAGIC, 5, unsigned int) | |
| 28 | /* This will connect a one pmem file to another, pass the file that is already | |
| 29 | * backed in memory as the argument to the ioctl | |
| 30 | */ | |
| 31 | #define PMEM_CONNECT _IOW(PMEM_IOCTL_MAGIC, 6, unsigned int) | |
| 32 | /* Returns the total size of the pmem region it is sent to as a pmem_region | |
| 33 | * struct (with offset set to 0). | |
| 34 | */ | |
| 35 | #define PMEM_GET_TOTAL_SIZE _IOW(PMEM_IOCTL_MAGIC, 7, unsigned int) | |
| 36 | /* Revokes gpu registers and resets the gpu. Pass a pointer to the | |
| 37 | * start of the mapped gpu regs (the vaddr returned by mmap) as the argument. | |
| 38 | */ | |
| 39 | #define HW3D_REVOKE_GPU _IOW(PMEM_IOCTL_MAGIC, 8, unsigned int) | |
| 40 | #define HW3D_GRANT_GPU _IOW(PMEM_IOCTL_MAGIC, 9, unsigned int) | |
| 41 | #define HW3D_WAIT_FOR_INTERRUPT _IOW(PMEM_IOCTL_MAGIC, 10, unsigned int) | |
| 42 | ||
| 43 | int get_pmem_file(int fd, unsigned long *start, unsigned long *vstart, | |
| 44 | unsigned long *end, struct file **filp); | |
| 45 | int get_pmem_user_addr(struct file *file, unsigned long *start, | |
| 46 | unsigned long *end); | |
| 47 | void put_pmem_file(struct file* file); | |
| 48 | void flush_pmem_file(struct file *file, unsigned long start, unsigned long len); | |
| 49 | ||
| 50 | struct android_pmem_platform_data | |
| 51 | { | |
| 52 | const char* name; | |
| 53 | /* starting physical address of memory region */ | |
| 54 | unsigned long start; | |
| 55 | /* size of memory region */ | |
| 56 | unsigned long size; | |
| 57 | /* set to indicate the region should not be managed with an allocator */ | |
| 58 | unsigned no_allocator; | |
| 59 | /* set to indicate maps of this region should be cached, if a mix of | |
| 60 | * cached and uncached is desired, set this and open the device with | |
| 61 | * O_SYNC to get an uncached region */ | |
| 62 | unsigned cached; | |
| 63 | /* The MSM7k has bits to enable a write buffer in the bus controller*/ | |
| 64 | unsigned buffered; | |
| 65 | }; | |
| 66 | ||
| 67 | struct pmem_region { | |
| 68 | unsigned long offset; | |
| 69 | unsigned long len; | |
| 70 | }; | |
| 71 | ||
| 72 | int pmem_setup(struct android_pmem_platform_data *pdata, | |
| 73 | long (*ioctl)(struct file *, unsigned int, unsigned long), | |
| 74 | int (*release)(struct inode *, struct file *)); | |
| 75 | ||
| 76 | int pmem_remap(struct pmem_region *region, struct file *file, | |
| 77 | unsigned operation); | |
| 78 | ||
| 79 | #endif //_ANDROID_PPP_H_ | |
| 80 |