diff options
| -rw-r--r-- | arch/tile/include/asm/system.h | 19 | ||||
| -rw-r--r-- | arch/tile/lib/Makefile | 5 | ||||
| -rw-r--r-- | arch/tile/lib/exports.c | 3 | ||||
| -rw-r--r-- | arch/tile/lib/mb_incoherent.S | 34 |
4 files changed, 20 insertions, 41 deletions
diff --git a/arch/tile/include/asm/system.h b/arch/tile/include/asm/system.h index 5388850deeb..23d1842f483 100644 --- a/arch/tile/include/asm/system.h +++ b/arch/tile/include/asm/system.h @@ -90,7 +90,24 @@ #endif #if !CHIP_HAS_MF_WAITS_FOR_VICTIMS() -int __mb_incoherent(void); /* Helper routine for mb_incoherent(). */ +#include <hv/syscall_public.h> +/* + * Issue an uncacheable load to each memory controller, then + * wait until those loads have completed. + */ +static inline void __mb_incoherent(void) +{ + long clobber_r10; + asm volatile("swint2" + : "=R10" (clobber_r10) + : "R10" (HV_SYS_fence_incoherent) + : "r0", "r1", "r2", "r3", "r4", + "r5", "r6", "r7", "r8", "r9", + "r11", "r12", "r13", "r14", + "r15", "r16", "r17", "r18", "r19", + "r20", "r21", "r22", "r23", "r24", + "r25", "r26", "r27", "r28", "r29"); +} #endif /* Fence to guarantee visibility of stores to incoherent memory. */ diff --git a/arch/tile/lib/Makefile b/arch/tile/lib/Makefile index 93122d5b155..0c26086ecbe 100644 --- a/arch/tile/lib/Makefile +++ b/arch/tile/lib/Makefile @@ -2,9 +2,8 @@ # Makefile for TILE-specific library files.. # -lib-y = cacheflush.o checksum.o cpumask.o delay.o \ - mb_incoherent.o uaccess.o memmove.o \ - memcpy_$(BITS).o memchr_$(BITS).o memset_$(BITS).o \ +lib-y = cacheflush.o checksum.o cpumask.o delay.o uaccess.o \ + memmove.o memcpy_$(BITS).o memchr_$(BITS).o memset_$(BITS).o \ strchr_$(BITS).o strlen_$(BITS).o ifeq ($(CONFIG_TILEGX),y) diff --git a/arch/tile/lib/exports.c b/arch/tile/lib/exports.c index 1509c559765..ce5dbf56578 100644 --- a/arch/tile/lib/exports.c +++ b/arch/tile/lib/exports.c @@ -45,9 +45,6 @@ EXPORT_SYMBOL(__copy_from_user_zeroing); EXPORT_SYMBOL(__copy_in_user_inatomic); #endif -/* arch/tile/lib/mb_incoherent.S */ -EXPORT_SYMBOL(__mb_incoherent); - /* hypervisor glue */ #include <hv/hypervisor.h> EXPORT_SYMBOL(hv_dev_open); diff --git a/arch/tile/lib/mb_incoherent.S b/arch/tile/lib/mb_incoherent.S deleted file mode 100644 index 989ad7b68d5..00000000000 --- a/arch/tile/lib/mb_incoherent.S +++ /dev/null @@ -1,34 +0,0 @@ -/* - * Copyright 2010 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. - * - * Assembly code for invoking the HV's fence_incoherent syscall. - */ - -#include <linux/linkage.h> -#include <hv/syscall_public.h> -#include <arch/abi.h> -#include <arch/chip.h> - -#if !CHIP_HAS_MF_WAITS_FOR_VICTIMS() - -/* - * Invoke the hypervisor's fence_incoherent syscall, which guarantees - * that all victims for cachelines homed on this tile have reached memory. - */ -STD_ENTRY(__mb_incoherent) - moveli TREG_SYSCALL_NR_NAME, HV_SYS_fence_incoherent - swint2 - jrp lr - STD_ENDPROC(__mb_incoherent) - -#endif |