| /* | |
| * Copyright 2011 Tilera Corporation. All Rights Reserved. | |
| * | |
| * This program is free software; you can redistribute it and/or | |
| * modify it under the terms of the GNU General Public License | |
| * as published by the Free Software Foundation, version 2. | |
| * | |
| * 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, GOOD TITLE or | |
| * NON INFRINGEMENT. See the GNU General Public License for | |
| * more details. | |
| */ | |
| #ifndef _ASM_TILE_CACHECTL_H | |
| #define _ASM_TILE_CACHECTL_H | |
| /* | |
| * Options for cacheflush system call. | |
| * | |
| * The ICACHE flush is performed on all cores currently running the | |
| * current process's address space. The intent is for user | |
| * applications to be able to modify code, invoke the system call, | |
| * then allow arbitrary other threads in the same address space to see | |
| * the newly-modified code. Passing a length of CHIP_L1I_CACHE_SIZE() | |
| * or more invalidates the entire icache on all cores in the address | |
| * spaces. (Note: currently this option invalidates the entire icache | |
| * regardless of the requested address and length, but we may choose | |
| * to honor the arguments at some point.) | |
| * | |
| * Flush and invalidation of memory can normally be performed with the | |
| * __insn_flush(), __insn_inv(), and __insn_finv() instructions from | |
| * userspace. The DCACHE option to the system call allows userspace | |
| * to flush the entire L1+L2 data cache from the core. In this case, | |
| * the address and length arguments are not used. The DCACHE flush is | |
| * restricted to the current core, not all cores in the address space. | |
| */ | |
| #define ICACHE (1<<0) /* invalidate L1 instruction cache */ | |
| #define DCACHE (1<<1) /* flush and invalidate data cache */ | |
| #define BCACHE (ICACHE|DCACHE) /* flush both caches */ | |
| #endif /* _ASM_TILE_CACHECTL_H */ |