From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/arch/mips/include/asm/paccess.h | 114 +++++++++++++++++++++++++++++++++ 1 file changed, 114 insertions(+) create mode 100644 kernel/arch/mips/include/asm/paccess.h (limited to 'kernel/arch/mips/include/asm/paccess.h') diff --git a/kernel/arch/mips/include/asm/paccess.h b/kernel/arch/mips/include/asm/paccess.h new file mode 100644 index 000000000..af81ab0da --- /dev/null +++ b/kernel/arch/mips/include/asm/paccess.h @@ -0,0 +1,114 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 1996, 1997, 1998, 1999, 2000 by Ralf Baechle + * Copyright (C) 1999, 2000 Silicon Graphics, Inc. + * + * Protected memory access. Used for everything that might take revenge + * by sending a DBE error like accessing possibly non-existent memory or + * devices. + */ +#ifndef _ASM_PACCESS_H +#define _ASM_PACCESS_H + +#include + +#ifdef CONFIG_32BIT +#define __PA_ADDR ".word" +#endif +#ifdef CONFIG_64BIT +#define __PA_ADDR ".dword" +#endif + +extern asmlinkage void handle_ibe(void); +extern asmlinkage void handle_dbe(void); + +#define put_dbe(x, ptr) __put_dbe((x), (ptr), sizeof(*(ptr))) +#define get_dbe(x, ptr) __get_dbe((x), (ptr), sizeof(*(ptr))) + +struct __large_pstruct { unsigned long buf[100]; }; +#define __mp(x) (*(struct __large_pstruct *)(x)) + +#define __get_dbe(x, ptr, size) \ +({ \ + long __gu_err; \ + __typeof__(*(ptr)) __gu_val; \ + unsigned long __gu_addr; \ + __asm__("":"=r" (__gu_val)); \ + __gu_addr = (unsigned long) (ptr); \ + __asm__("":"=r" (__gu_err)); \ + switch (size) { \ + case 1: __get_dbe_asm("lb"); break; \ + case 2: __get_dbe_asm("lh"); break; \ + case 4: __get_dbe_asm("lw"); break; \ + case 8: __get_dbe_asm("ld"); break; \ + default: __get_dbe_unknown(); break; \ + } \ + x = (__typeof__(*(ptr))) __gu_val; \ + __gu_err; \ +}) + +#define __get_dbe_asm(insn) \ +{ \ + __asm__ __volatile__( \ + "1:\t" insn "\t%1,%2\n\t" \ + "move\t%0,$0\n" \ + "2:\n\t" \ + ".insn\n\t" \ + ".section\t.fixup,\"ax\"\n" \ + "3:\tli\t%0,%3\n\t" \ + "move\t%1,$0\n\t" \ + "j\t2b\n\t" \ + ".previous\n\t" \ + ".section\t__dbe_table,\"a\"\n\t" \ + __PA_ADDR "\t1b, 3b\n\t" \ + ".previous" \ + :"=r" (__gu_err), "=r" (__gu_val) \ + :"o" (__mp(__gu_addr)), "i" (-EFAULT)); \ +} + +extern void __get_dbe_unknown(void); + +#define __put_dbe(x, ptr, size) \ +({ \ + long __pu_err; \ + __typeof__(*(ptr)) __pu_val; \ + long __pu_addr; \ + __pu_val = (x); \ + __pu_addr = (long) (ptr); \ + __asm__("":"=r" (__pu_err)); \ + switch (size) { \ + case 1: __put_dbe_asm("sb"); break; \ + case 2: __put_dbe_asm("sh"); break; \ + case 4: __put_dbe_asm("sw"); break; \ + case 8: __put_dbe_asm("sd"); break; \ + default: __put_dbe_unknown(); break; \ + } \ + __pu_err; \ +}) + +#define __put_dbe_asm(insn) \ +{ \ + __asm__ __volatile__( \ + "1:\t" insn "\t%1,%2\n\t" \ + "move\t%0,$0\n" \ + "2:\n\t" \ + ".insn\n\t" \ + ".section\t.fixup,\"ax\"\n" \ + "3:\tli\t%0,%3\n\t" \ + "j\t2b\n\t" \ + ".previous\n\t" \ + ".section\t__dbe_table,\"a\"\n\t" \ + __PA_ADDR "\t1b, 3b\n\t" \ + ".previous" \ + : "=r" (__pu_err) \ + : "r" (__pu_val), "o" (__mp(__pu_addr)), "i" (-EFAULT)); \ +} + +extern void __put_dbe_unknown(void); + +extern unsigned long search_dbe_table(unsigned long addr); + +#endif /* _ASM_PACCESS_H */ -- cgit 1.2.3-korg