48d7927bdf
This patch adds a prefetch abort handler similar to the data abort one and renames the latter for consistency. Initial implementation by Paul Brook with some renaming by Catalin Marinas. Signed-off-by: Paul Brook <paul@codesourcery.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
150 lines
3.3 KiB
C
150 lines
3.3 KiB
C
/*
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* linux/include/asm-arm/glue.h
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*
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* Copyright (C) 1997-1999 Russell King
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* Copyright (C) 2000-2002 Deep Blue Solutions Ltd.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This file provides the glue to stick the processor-specific bits
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* into the kernel in an efficient manner. The idea is to use branches
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* when we're only targetting one class of TLB, or indirect calls
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* when we're targetting multiple classes of TLBs.
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*/
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#ifdef __KERNEL__
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#ifdef __STDC__
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#define ____glue(name,fn) name##fn
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#else
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#define ____glue(name,fn) name/**/fn
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#endif
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#define __glue(name,fn) ____glue(name,fn)
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/*
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* Data Abort Model
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* ================
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*
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* We have the following to choose from:
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* arm6 - ARM6 style
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* arm7 - ARM7 style
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* v4_early - ARMv4 without Thumb early abort handler
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* v4t_late - ARMv4 with Thumb late abort handler
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* v4t_early - ARMv4 with Thumb early abort handler
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* v5tej_early - ARMv5 with Thumb and Java early abort handler
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* xscale - ARMv5 with Thumb with Xscale extensions
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* v6_early - ARMv6 generic early abort handler
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* v7_early - ARMv7 generic early abort handler
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*/
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#undef CPU_DABORT_HANDLER
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#undef MULTI_DABORT
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#if defined(CONFIG_CPU_ARM610)
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# ifdef CPU_DABORT_HANDLER
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# define MULTI_DABORT 1
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# else
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# define CPU_DABORT_HANDLER cpu_arm6_data_abort
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# endif
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#endif
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#if defined(CONFIG_CPU_ARM710)
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# ifdef CPU_DABORT_HANDLER
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# define MULTI_DABORT 1
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# else
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# define CPU_DABORT_HANDLER cpu_arm7_data_abort
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# endif
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#endif
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#ifdef CONFIG_CPU_ABRT_LV4T
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# ifdef CPU_DABORT_HANDLER
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# define MULTI_DABORT 1
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# else
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# define CPU_DABORT_HANDLER v4t_late_abort
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# endif
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#endif
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#ifdef CONFIG_CPU_ABRT_EV4
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# ifdef CPU_DABORT_HANDLER
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# define MULTI_DABORT 1
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# else
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# define CPU_DABORT_HANDLER v4_early_abort
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# endif
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#endif
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#ifdef CONFIG_CPU_ABRT_EV4T
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# ifdef CPU_DABORT_HANDLER
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# define MULTI_DABORT 1
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# else
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# define CPU_DABORT_HANDLER v4t_early_abort
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# endif
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#endif
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#ifdef CONFIG_CPU_ABRT_EV5TJ
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# ifdef CPU_DABORT_HANDLER
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# define MULTI_DABORT 1
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# else
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# define CPU_DABORT_HANDLER v5tj_early_abort
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# endif
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#endif
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#ifdef CONFIG_CPU_ABRT_EV5T
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# ifdef CPU_DABORT_HANDLER
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# define MULTI_DABORT 1
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# else
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# define CPU_DABORT_HANDLER v5t_early_abort
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# endif
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#endif
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#ifdef CONFIG_CPU_ABRT_EV6
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# ifdef CPU_DABORT_HANDLER
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# define MULTI_DABORT 1
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# else
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# define CPU_DABORT_HANDLER v6_early_abort
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# endif
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#endif
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#ifdef CONFIG_CPU_ABRT_EV7
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# ifdef CPU_DABORT_HANDLER
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# define MULTI_DABORT 1
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# else
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# define CPU_DABORT_HANDLER v7_early_abort
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# endif
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#endif
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#ifndef CPU_DABORT_HANDLER
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#error Unknown data abort handler type
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#endif
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/*
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* Prefetch abort handler. If the CPU has an IFAR use that, otherwise
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* use the address of the aborted instruction
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*/
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#undef CPU_PABORT_HANDLER
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#undef MULTI_PABORT
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#ifdef CONFIG_CPU_PABRT_IFAR
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# ifdef CPU_PABORT_HANDLER
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# define MULTI_PABORT 1
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# else
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# define CPU_PABORT_HANDLER(reg, insn) mrc p15, 0, reg, cr6, cr0, 2
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# endif
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#endif
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#ifdef CONFIG_CPU_PABRT_NOIFAR
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# ifdef CPU_PABORT_HANDLER
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# define MULTI_PABORT 1
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# else
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# define CPU_PABORT_HANDLER(reg, insn) mov reg, insn
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# endif
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#endif
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#ifndef CPU_PABORT_HANDLER
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#error Unknown prefetch abort handler type
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#endif
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#endif
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