| Chris Metcalf | 867e359 | 2010-05-28 23:09:12 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2010 Tilera Corporation. All Rights Reserved. |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU General Public License |
| 6 | * as published by the Free Software Foundation, version 2. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, but |
| 9 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or |
| 11 | * NON INFRINGEMENT. See the GNU General Public License for |
| 12 | * more details. |
| 13 | * |
| 14 | * Assembly code for invoking the HV's fence_incoherent syscall. |
| 15 | */ |
| 16 | |
| 17 | #include <linux/linkage.h> |
| 18 | #include <hv/syscall_public.h> |
| 19 | #include <arch/abi.h> |
| 20 | #include <arch/chip.h> |
| 21 | |
| 22 | #if !CHIP_HAS_MF_WAITS_FOR_VICTIMS() |
| 23 | |
| 24 | /* |
| 25 | * Invoke the hypervisor's fence_incoherent syscall, which guarantees |
| 26 | * that all victims for cachelines homed on this tile have reached memory. |
| 27 | */ |
| 28 | STD_ENTRY(__mb_incoherent) |
| 29 | moveli TREG_SYSCALL_NR_NAME, HV_SYS_fence_incoherent |
| 30 | swint2 |
| 31 | jrp lr |
| 32 | STD_ENDPROC(__mb_incoherent) |
| 33 | |
| 34 | #endif |