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Diffstat (limited to 'include/asm-mips/irqflags.h')
-rw-r--r--include/asm-mips/irqflags.h263
1 files changed, 0 insertions, 263 deletions
diff --git a/include/asm-mips/irqflags.h b/include/asm-mips/irqflags.h
deleted file mode 100644
index 881e8866501..00000000000
--- a/include/asm-mips/irqflags.h
+++ /dev/null
@@ -1,263 +0,0 @@
-/*
- * 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) 1994, 95, 96, 97, 98, 99, 2003 by Ralf Baechle
- * Copyright (C) 1996 by Paul M. Antoine
- * Copyright (C) 1999 Silicon Graphics
- * Copyright (C) 2000 MIPS Technologies, Inc.
- */
-#ifndef _ASM_IRQFLAGS_H
-#define _ASM_IRQFLAGS_H
-
-#ifndef __ASSEMBLY__
-
-#include <linux/compiler.h>
-#include <asm/hazards.h>
-
-__asm__(
- " .macro raw_local_irq_enable \n"
- " .set push \n"
- " .set reorder \n"
- " .set noat \n"
-#ifdef CONFIG_MIPS_MT_SMTC
- " mfc0 $1, $2, 1 # SMTC - clear TCStatus.IXMT \n"
- " ori $1, 0x400 \n"
- " xori $1, 0x400 \n"
- " mtc0 $1, $2, 1 \n"
-#elif defined(CONFIG_CPU_MIPSR2)
- " ei \n"
-#else
- " mfc0 $1,$12 \n"
- " ori $1,0x1f \n"
- " xori $1,0x1e \n"
- " mtc0 $1,$12 \n"
-#endif
- " irq_enable_hazard \n"
- " .set pop \n"
- " .endm");
-
-static inline void raw_local_irq_enable(void)
-{
- __asm__ __volatile__(
- "raw_local_irq_enable"
- : /* no outputs */
- : /* no inputs */
- : "memory");
-}
-
-/*
- * For cli() we have to insert nops to make sure that the new value
- * has actually arrived in the status register before the end of this
- * macro.
- * R4000/R4400 need three nops, the R4600 two nops and the R10000 needs
- * no nops at all.
- */
-/*
- * For TX49, operating only IE bit is not enough.
- *
- * If mfc0 $12 follows store and the mfc0 is last instruction of a
- * page and fetching the next instruction causes TLB miss, the result
- * of the mfc0 might wrongly contain EXL bit.
- *
- * ERT-TX49H2-027, ERT-TX49H3-012, ERT-TX49HL3-006, ERT-TX49H4-008
- *
- * Workaround: mask EXL bit of the result or place a nop before mfc0.
- */
-__asm__(
- " .macro raw_local_irq_disable\n"
- " .set push \n"
- " .set noat \n"
-#ifdef CONFIG_MIPS_MT_SMTC
- " mfc0 $1, $2, 1 \n"
- " ori $1, 0x400 \n"
- " .set noreorder \n"
- " mtc0 $1, $2, 1 \n"
-#elif defined(CONFIG_CPU_MIPSR2)
- " di \n"
-#else
- " mfc0 $1,$12 \n"
- " ori $1,0x1f \n"
- " xori $1,0x1f \n"
- " .set noreorder \n"
- " mtc0 $1,$12 \n"
-#endif
- " irq_disable_hazard \n"
- " .set pop \n"
- " .endm \n");
-
-static inline void raw_local_irq_disable(void)
-{
- __asm__ __volatile__(
- "raw_local_irq_disable"
- : /* no outputs */
- : /* no inputs */
- : "memory");
-}
-
-__asm__(
- " .macro raw_local_save_flags flags \n"
- " .set push \n"
- " .set reorder \n"
-#ifdef CONFIG_MIPS_MT_SMTC
- " mfc0 \\flags, $2, 1 \n"
-#else
- " mfc0 \\flags, $12 \n"
-#endif
- " .set pop \n"
- " .endm \n");
-
-#define raw_local_save_flags(x) \
-__asm__ __volatile__( \
- "raw_local_save_flags %0" \
- : "=r" (x))
-
-__asm__(
- " .macro raw_local_irq_save result \n"
- " .set push \n"
- " .set reorder \n"
- " .set noat \n"
-#ifdef CONFIG_MIPS_MT_SMTC
- " mfc0 \\result, $2, 1 \n"
- " ori $1, \\result, 0x400 \n"
- " .set noreorder \n"
- " mtc0 $1, $2, 1 \n"
- " andi \\result, \\result, 0x400 \n"
-#elif defined(CONFIG_CPU_MIPSR2)
- " di \\result \n"
- " andi \\result, 1 \n"
-#else
- " mfc0 \\result, $12 \n"
- " ori $1, \\result, 0x1f \n"
- " xori $1, 0x1f \n"
- " .set noreorder \n"
- " mtc0 $1, $12 \n"
-#endif
- " irq_disable_hazard \n"
- " .set pop \n"
- " .endm \n");
-
-#define raw_local_irq_save(x) \
-__asm__ __volatile__( \
- "raw_local_irq_save\t%0" \
- : "=r" (x) \
- : /* no inputs */ \
- : "memory")
-
-__asm__(
- " .macro raw_local_irq_restore flags \n"
- " .set push \n"
- " .set noreorder \n"
- " .set noat \n"
-#ifdef CONFIG_MIPS_MT_SMTC
- "mfc0 $1, $2, 1 \n"
- "andi \\flags, 0x400 \n"
- "ori $1, 0x400 \n"
- "xori $1, 0x400 \n"
- "or \\flags, $1 \n"
- "mtc0 \\flags, $2, 1 \n"
-#elif defined(CONFIG_CPU_MIPSR2) && defined(CONFIG_IRQ_CPU)
- /*
- * Slow, but doesn't suffer from a relativly unlikely race
- * condition we're having since days 1.
- */
- " beqz \\flags, 1f \n"
- " di \n"
- " ei \n"
- "1: \n"
-#elif defined(CONFIG_CPU_MIPSR2)
- /*
- * Fast, dangerous. Life is fun, life is good.
- */
- " mfc0 $1, $12 \n"
- " ins $1, \\flags, 0, 1 \n"
- " mtc0 $1, $12 \n"
-#else
- " mfc0 $1, $12 \n"
- " andi \\flags, 1 \n"
- " ori $1, 0x1f \n"
- " xori $1, 0x1f \n"
- " or \\flags, $1 \n"
- " mtc0 \\flags, $12 \n"
-#endif
- " irq_disable_hazard \n"
- " .set pop \n"
- " .endm \n");
-
-extern void smtc_ipi_replay(void);
-
-static inline void raw_local_irq_restore(unsigned long flags)
-{
- unsigned long __tmp1;
-
-#ifdef CONFIG_MIPS_MT_SMTC_INSTANT_REPLAY
- /*
- * CONFIG_MIPS_MT_SMTC_INSTANT_REPLAY does prompt replay of deferred
- * IPIs, at the cost of branch and call overhead on each
- * local_irq_restore()
- */
- if (unlikely(!(flags & 0x0400)))
- smtc_ipi_replay();
-#endif
-
- __asm__ __volatile__(
- "raw_local_irq_restore\t%0"
- : "=r" (__tmp1)
- : "0" (flags)
- : "memory");
-}
-
-static inline int raw_irqs_disabled_flags(unsigned long flags)
-{
-#ifdef CONFIG_MIPS_MT_SMTC
- /*
- * SMTC model uses TCStatus.IXMT to disable interrupts for a thread/CPU
- */
- return flags & 0x400;
-#else
- return !(flags & 1);
-#endif
-}
-
-#endif
-
-/*
- * Do the CPU's IRQ-state tracing from assembly code.
- */
-#ifdef CONFIG_TRACE_IRQFLAGS
-/* Reload some registers clobbered by trace_hardirqs_on */
-#ifdef CONFIG_64BIT
-# define TRACE_IRQS_RELOAD_REGS \
- LONG_L $11, PT_R11(sp); \
- LONG_L $10, PT_R10(sp); \
- LONG_L $9, PT_R9(sp); \
- LONG_L $8, PT_R8(sp); \
- LONG_L $7, PT_R7(sp); \
- LONG_L $6, PT_R6(sp); \
- LONG_L $5, PT_R5(sp); \
- LONG_L $4, PT_R4(sp); \
- LONG_L $2, PT_R2(sp)
-#else
-# define TRACE_IRQS_RELOAD_REGS \
- LONG_L $7, PT_R7(sp); \
- LONG_L $6, PT_R6(sp); \
- LONG_L $5, PT_R5(sp); \
- LONG_L $4, PT_R4(sp); \
- LONG_L $2, PT_R2(sp)
-#endif
-# define TRACE_IRQS_ON \
- CLI; /* make sure trace_hardirqs_on() is called in kernel level */ \
- jal trace_hardirqs_on
-# define TRACE_IRQS_ON_RELOAD \
- TRACE_IRQS_ON; \
- TRACE_IRQS_RELOAD_REGS
-# define TRACE_IRQS_OFF \
- jal trace_hardirqs_off
-#else
-# define TRACE_IRQS_ON
-# define TRACE_IRQS_ON_RELOAD
-# define TRACE_IRQS_OFF
-#endif
-
-#endif /* _ASM_IRQFLAGS_H */
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