diff options
Diffstat (limited to 'include/uapi')
| -rw-r--r-- | include/uapi/linux/Kbuild | 1 | ||||
| -rw-r--r-- | include/uapi/linux/android_pmem.h | 169 |
2 files changed, 170 insertions, 0 deletions
diff --git a/include/uapi/linux/Kbuild b/include/uapi/linux/Kbuild index d697aec50579..e981c1e58f12 100644 --- a/include/uapi/linux/Kbuild +++ b/include/uapi/linux/Kbuild @@ -509,3 +509,4 @@ header-y += userfaultfd.h header-y += msm_dsps.h header-y += msm-core-interface.h header-y += msm_thermal_ioctl.h +header-y += android_pmem.h diff --git a/include/uapi/linux/android_pmem.h b/include/uapi/linux/android_pmem.h new file mode 100644 index 000000000000..aa7fee6e2a4c --- /dev/null +++ b/include/uapi/linux/android_pmem.h @@ -0,0 +1,169 @@ +/* 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) +/* 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) + +#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 { + /* Zero is a default in platform PMEM structures in the board files, + * when the "allocator_type" structure element is not explicitly + * defined + */ + PMEM_ALLOCATORTYPE_BITMAP = 0, /* forced to be zero here */ + PMEM_ALLOCATORTYPE_SYSTEM, + + PMEM_ALLOCATORTYPE_ALLORNOTHING, + PMEM_ALLOCATORTYPE_BUDDYBESTFIT, + + PMEM_ALLOCATORTYPE_MAX, +}; + +/* kernel api names for board specific data structures */ +#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; + /* size of memory region */ + unsigned long size; + + enum pmem_allocator_type allocator_type; + /* treated as a 'hidden' variable in the board files. Can be + * set, but default is the system init value of 0 which becomes a + * quantum of 4K pages. + */ + unsigned int quantum; + + /* 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; + /* which memory type (i.e. SMI, EBI1) this PMEM device is backed by */ + unsigned memory_type; + /* + * function to be called when the number of allocations goes from + * 0 -> 1 + */ + int (*request_region)(void *); + /* + * function to be called when the number of allocations goes from + * 1 -> 0 + */ + int (*release_region)(void *); + /* + * function to be called upon pmem registration + */ + void *(*setup_region)(void); + /* + * indicates that this region should be mapped/unmaped as needed + */ + int map_on_demand; + /* + * indicates this pmem may be reused via fmem + */ + 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 /* __KERNEL__ */ + +#endif //_ANDROID_PPP_H_ + |