diff options
Diffstat (limited to 'include/asm-xtensa')
106 files changed, 0 insertions, 9330 deletions
diff --git a/include/asm-xtensa/Kbuild b/include/asm-xtensa/Kbuild deleted file mode 100644 index c68e1680da0..00000000000 --- a/include/asm-xtensa/Kbuild +++ /dev/null @@ -1 +0,0 @@ -include include/asm-generic/Kbuild.asm diff --git a/include/asm-xtensa/asmmacro.h b/include/asm-xtensa/asmmacro.h deleted file mode 100644 index 76915cabad1..00000000000 --- a/include/asm-xtensa/asmmacro.h +++ /dev/null @@ -1,153 +0,0 @@ -/* - * include/asm-xtensa/asmmacro.h - * - * 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) 2005 Tensilica Inc. - */ - -#ifndef _XTENSA_ASMMACRO_H -#define _XTENSA_ASMMACRO_H - -#include <asm/variant/core.h> - -/* - * Some little helpers for loops. Use zero-overhead-loops - * where applicable and if supported by the processor. - * - * __loopi ar, at, size, inc - * ar register initialized with the start address - * at scratch register used by macro - * size size immediate value - * inc increment - * - * __loops ar, as, at, inc_log2[, mask_log2][, cond][, ncond] - * ar register initialized with the start address - * as register initialized with the size - * at scratch register use by macro - * inc_log2 increment [in log2] - * mask_log2 mask [in log2] - * cond true condition (used in loop'cond') - * ncond false condition (used in b'ncond') - * - * __loop as - * restart loop. 'as' register must not have been modified! - * - * __endla ar, at, incr - * ar start address (modified) - * as scratch register used by macro - * inc increment - */ - -/* - * loop for given size as immediate - */ - - .macro __loopi ar, at, size, incr - -#if XCHAL_HAVE_LOOPS - movi \at, ((\size + \incr - 1) / (\incr)) - loop \at, 99f -#else - addi \at, \ar, \size - 98: -#endif - - .endm - -/* - * loop for given size in register - */ - - .macro __loops ar, as, at, incr_log2, mask_log2, cond, ncond - -#if XCHAL_HAVE_LOOPS - .ifgt \incr_log2 - 1 - addi \at, \as, (1 << \incr_log2) - 1 - .ifnc \mask_log2, - extui \at, \at, \incr_log2, \mask_log2 - .else - srli \at, \at, \incr_log2 - .endif - .endif - loop\cond \at, 99f -#else - .ifnc \mask_log2, - extui \at, \as, \incr_log2, \mask_log2 - .else - .ifnc \ncond, - srli \at, \as, \incr_log2 - .endif - .endif - .ifnc \ncond, - b\ncond \at, 99f - - .endif - .ifnc \mask_log2, - slli \at, \at, \incr_log2 - add \at, \ar, \at - .else - add \at, \ar, \as - .endif -#endif - 98: - - .endm - -/* - * loop from ar to ax - */ - - .macro __loopt ar, as, at, incr_log2 - -#if XCHAL_HAVE_LOOPS - sub \at, \as, \ar - .ifgt \incr_log2 - 1 - addi \at, \at, (1 << \incr_log2) - 1 - srli \at, \at, \incr_log2 - .endif - loop \at, 99f -#else - 98: -#endif - - .endm - -/* - * restart loop. registers must be unchanged - */ - - .macro __loop as - -#if XCHAL_HAVE_LOOPS - loop \as, 99f -#else - 98: -#endif - - .endm - -/* - * end of loop with no increment of the address. - */ - - .macro __endl ar, as -#if !XCHAL_HAVE_LOOPS - bltu \ar, \as, 98b -#endif - 99: - .endm - -/* - * end of loop with increment of the address. - */ - - .macro __endla ar, as, incr - addi \ar, \ar, \incr - __endl \ar \as - .endm - - -#endif /* _XTENSA_ASMMACRO_H */ diff --git a/include/asm-xtensa/atomic.h b/include/asm-xtensa/atomic.h deleted file mode 100644 index b3b23540f14..00000000000 --- a/include/asm-xtensa/atomic.h +++ /dev/null @@ -1,300 +0,0 @@ -/* - * include/asm-xtensa/atomic.h - * - * Atomic operations that C can't guarantee us. Useful for resource counting.. - * - * 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) 2001 - 2005 Tensilica Inc. - */ - -#ifndef _XTENSA_ATOMIC_H -#define _XTENSA_ATOMIC_H - -#include <linux/stringify.h> - -typedef struct { volatile int counter; } atomic_t; - -#ifdef __KERNEL__ -#include <asm/processor.h> -#include <asm/system.h> - -#define ATOMIC_INIT(i) { (i) } - -/* - * This Xtensa implementation assumes that the right mechanism - * for exclusion is for locking interrupts to level 1. - * - * Locking interrupts looks like this: - * - * rsil a15, 1 - * <code> - * wsr a15, PS - * rsync - * - * Note that a15 is used here because the register allocation - * done by the compiler is not guaranteed and a window overflow - * may not occur between the rsil and wsr instructions. By using - * a15 in the rsil, the machine is guaranteed to be in a state - * where no register reference will cause an overflow. - */ - -/** - * atomic_read - read atomic variable - * @v: pointer of type atomic_t - * - * Atomically reads the value of @v. - */ -#define atomic_read(v) ((v)->counter) - -/** - * atomic_set - set atomic variable - * @v: pointer of type atomic_t - * @i: required value - * - * Atomically sets the value of @v to @i. - */ -#define atomic_set(v,i) ((v)->counter = (i)) - -/** - * atomic_add - add integer to atomic variable - * @i: integer value to add - * @v: pointer of type atomic_t - * - * Atomically adds @i to @v. - */ -static inline void atomic_add(int i, atomic_t * v) -{ - unsigned int vval; - - __asm__ __volatile__( - "rsil a15, "__stringify(LOCKLEVEL)"\n\t" - "l32i %0, %2, 0 \n\t" - "add %0, %0, %1 \n\t" - "s32i %0, %2, 0 \n\t" - "wsr a15, "__stringify(PS)" \n\t" - "rsync \n" - : "=&a" (vval) - : "a" (i), "a" (v) - : "a15", "memory" - ); -} - -/** - * atomic_sub - subtract the atomic variable - * @i: integer value to subtract - * @v: pointer of type atomic_t - * - * Atomically subtracts @i from @v. - */ -static inline void atomic_sub(int i, atomic_t *v) -{ - unsigned int vval; - - __asm__ __volatile__( - "rsil a15, "__stringify(LOCKLEVEL)"\n\t" - "l32i %0, %2, 0 \n\t" - "sub %0, %0, %1 \n\t" - "s32i %0, %2, 0 \n\t" - "wsr a15, "__stringify(PS)" \n\t" - "rsync \n" - : "=&a" (vval) - : "a" (i), "a" (v) - : "a15", "memory" - ); -} - -/* - * We use atomic_{add|sub}_return to define other functions. - */ - -static inline int atomic_add_return(int i, atomic_t * v) -{ - unsigned int vval; - - __asm__ __volatile__( - "rsil a15,"__stringify(LOCKLEVEL)"\n\t" - "l32i %0, %2, 0 \n\t" - "add %0, %0, %1 \n\t" - "s32i %0, %2, 0 \n\t" - "wsr a15, "__stringify(PS)" \n\t" - "rsync \n" - : "=&a" (vval) - : "a" (i), "a" (v) - : "a15", "memory" - ); - - return vval; -} - -static inline int atomic_sub_return(int i, atomic_t * v) -{ - unsigned int vval; - - __asm__ __volatile__( - "rsil a15,"__stringify(LOCKLEVEL)"\n\t" - "l32i %0, %2, 0 \n\t" - "sub %0, %0, %1 \n\t" - "s32i %0, %2, 0 \n\t" - "wsr a15, "__stringify(PS)" \n\t" - "rsync \n" - : "=&a" (vval) - : "a" (i), "a" (v) - : "a15", "memory" - ); - - return vval; -} - -/** - * atomic_sub_and_test - subtract value from variable and test result - * @i: integer value to subtract - * @v: pointer of type atomic_t - * - * Atomically subtracts @i from @v and returns - * true if the result is zero, or false for all - * other cases. - */ -#define atomic_sub_and_test(i,v) (atomic_sub_return((i),(v)) == 0) - -/** - * atomic_inc - increment atomic variable - * @v: pointer of type |