projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
| 8a0c9e03 AJ |
2 | /* |
| 3 | * Port on Texas Instruments TMS320C6x architecture | |
| 4 | * | |
| 5 | * Copyright (C) 2004, 2009, 2010, 2011 Texas Instruments Incorporated | |
| 6 | * Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com) | |
| 8a0c9e03 AJ |
7 | */ |
| 8 | #include <linux/module.h> | |
| 9 | #include <linux/syscalls.h> | |
| 10 | #include <linux/uaccess.h> | |
| 11 | ||
| 12 | #include <asm/syscalls.h> | |
| 13 | ||
| 14 | #ifdef CONFIG_ACCESS_CHECK | |
| 15 | int _access_ok(unsigned long addr, unsigned long size) | |
| 16 | { | |
| 17 | if (!size) | |
| 18 | return 1; | |
| 19 | ||
| 20 | if (!addr || addr > (0xffffffffUL - (size - 1))) | |
| 21 | goto _bad_access; | |
| 22 | ||
| db68ce10 | 23 | if (uaccess_kernel()) |
| 8a0c9e03 AJ |
24 | return 1; |
| 25 | ||
| 26 | if (memory_start <= addr && (addr + size - 1) < memory_end) | |
| 27 | return 1; | |
| 28 | ||
| 29 | _bad_access: | |
| 30 | pr_debug("Bad access attempt: pid[%d] addr[%08lx] size[0x%lx]\n", | |
| 31 | current->pid, addr, size); | |
| 32 | return 0; | |
| 33 | } | |
| 34 | EXPORT_SYMBOL(_access_ok); | |
| 35 | #endif | |
| 36 | ||
| 37 | /* sys_cache_sync -- sync caches over given range */ | |
| 38 | asmlinkage int sys_cache_sync(unsigned long s, unsigned long e) | |
| 39 | { | |
| 40 | L1D_cache_block_writeback_invalidate(s, e); | |
| 41 | L1P_cache_block_invalidate(s, e); | |
| 42 | ||
| 43 | return 0; | |
| 44 | } | |
| 45 | ||
| 46 | /* Provide the actual syscall number to call mapping. */ | |
| 47 | #undef __SYSCALL | |
| 48 | #define __SYSCALL(nr, call) [nr] = (call), | |
| 49 | ||
| 50 | /* | |
| 51 | * Use trampolines | |
| 52 | */ | |
| 53 | #define sys_pread64 sys_pread_c6x | |
| 54 | #define sys_pwrite64 sys_pwrite_c6x | |
| 55 | #define sys_truncate64 sys_truncate64_c6x | |
| 56 | #define sys_ftruncate64 sys_ftruncate64_c6x | |
| 57 | #define sys_fadvise64 sys_fadvise64_c6x | |
| 58 | #define sys_fadvise64_64 sys_fadvise64_64_c6x | |
| 59 | #define sys_fallocate sys_fallocate_c6x | |
| 60 | ||
| 61 | /* Use sys_mmap_pgoff directly */ | |
| 62 | #define sys_mmap2 sys_mmap_pgoff | |
| 63 | ||
| 64 | /* | |
| 65 | * Note that we can't include <linux/unistd.h> here since the header | |
| 66 | * guard will defeat us; <asm/unistd.h> checks for __SYSCALL as well. | |
| 67 | */ | |
| 68 | void *sys_call_table[__NR_syscalls] = { | |
| 69 | [0 ... __NR_syscalls-1] = sys_ni_syscall, | |
| 70 | #include <asm/unistd.h> | |
| 71 | }; |