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/*
* Copyright 2003-2011 NetLogic Microsystems, Inc. (NetLogic). All rights
* reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the NetLogic
* license below:
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY NETLOGIC ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL NETLOGIC OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _ASM_NLM_MIPS_EXTS_H
#define _ASM_NLM_MIPS_EXTS_H
/*
* XLR and XLP interrupt request and interrupt mask registers
*/
#define read_c0_eirr() __read_64bit_c0_register($9, 6)
#define read_c0_eimr() __read_64bit_c0_register($9, 7)
#define write_c0_eirr(val) __write_64bit_c0_register($9, 6, val)
/*
* Writing EIMR in 32 bit is a special case, the lower 8 bit of the
* EIMR is shadowed in the status register, so we cannot save and
* restore status register for split read.
*/
#define write_c0_eimr(val) \
do { \
if (sizeof(unsigned long) == 4) { \
unsigned long __flags; \
\
local_irq_save(__flags); \
__asm__ __volatile__( \
".set\tmips64\n\t" \
"dsll\t%L0, %L0, 32\n\t" \
"dsrl\t%L0, %L0, 32\n\t" \
"dsll\t%M0, %M0, 32\n\t" \
"or\t%L0, %L0, %M0\n\t" \
"dmtc0\t%L0, $9, 7\n\t" \
".set\tmips0" \
: : "r" (val)); \
__flags = (__flags & 0xffff00ff) | (((val) & 0xff) << 8);\
local_irq_restore(__flags); \
} else \
__write_64bit_c0_register($9, 7, (val)); \
} while (0)
/*
* Handling the 64 bit EIMR and EIRR registers in 32-bit mode with
* standard functions will be very inefficient. This provides
* optimized functions for the normal operations on the registers.
*
* Call with interrupts disabled.
*/
static inline void ack_c0_eirr(int irq)
{
__asm__ __volatile__(
".set push\n\t"
".set mips64\n\t"
".set noat\n\t"
"li $1, 1\n\t"
"dsllv $1, $1, %0\n\t"
"dmtc0 $1, $9, 6\n\t"
".set pop"
: : "r" (irq));
}
static inline void set_c0_eimr(int irq)
{
__asm__ __volatile__(
".set push\n\t"
".set mips64\n\t"
".set noat\n\t"
"li $1, 1\n\t"
"dsllv %0, $1, %0\n\t"
"dmfc0 $1, $9, 7\n\t"
"or $1, %0\n\t"
"dmtc0 $1, $9, 7\n\t"
".set pop"
: "+r" (irq));
}
static inline void clear_c0_eimr(int irq)
{
__asm__ __volatile__(
".set push\n\t"
".set mips64\n\t"
".set noat\n\t"
"li $1, 1\n\t"
"dsllv %0, $1, %0\n\t"
"dmfc0 $1, $9, 7\n\t"
"or $1, %0\n\t"
"xor $1, %0\n\t"
"dmtc0 $1, $9, 7\n\t"
".set pop"
: "+r" (irq));
}
/*
* Read c0 eimr and c0 eirr, do AND of the two values, the result is
* the interrupts which are raised and are not masked.
*/
static inline uint64_t read_c0_eirr_and_eimr(void)
{
uint64_t val;
#ifdef CONFIG_64BIT
val = read_c0_eimr() & read_c0_eirr();
#else
__asm__ __volatile__(
".set push\n\t"
".set mips64\n\t"
".set noat\n\t"
"dmfc0 %M0, $9, 6\n\t"
"dmfc0 %L0, $9, 7\n\t"
"and %M0, %L0\n\t"
"dsll %L0, %M0, 32\n\t"
"dsra %M0, %M0, 32\n\t"
"dsra %L0, %L0, 32\n\t"
".set pop"
: "=r" (val));
#endif
return val;
}
static inline int hard_smp_processor_id(void)
{
return __read_32bit_c0_register($15, 1) & 0x3ff;
}
static inline int nlm_nodeid(void)
{
return (__read_32bit_c0_register($15, 1) >> 5) & 0x3;
}
static inline unsigned int nlm_core_id(void)
{
return (read_c0_ebase() & 0x1c) >> 2;
}
static inline unsigned int nlm_thread_id(void)
{
return read_c0_ebase() & 0x3;
}
#define __read_64bit_c2_split(source, sel) \
({ \
unsigned long long __val; \
unsigned long __flags; \
\
local_irq_save(__flags); \
if (sel == 0) \
__asm__ __volatile__( \
".set\tmips64\n\t" \
"dmfc2\t%M0, " #source "\n\t" \
"dsll\t%L0, %M0, 32\n\t" \
"dsra\t%M0, %M0, 32\n\t" \
"dsra\t%L0, %L0, 32\n\t" \
".set\tmips0\n\t" \
: "=r" (__val)); \
else \
__asm__ __volatile__( \
".set\tmips64\n\t" \
"dmfc2\t%M0, " #source ", " #sel "\n\t" \
"dsll\t%L0, %M0, 32\n\t" \
"dsra\t%M0, %M0, 32\n\t" \
"dsra\t%L0, %L0, 32\n\t" \
".set\tmips0\n\t" \
: "=r" (__val)); \
local_irq_restore(__flags); \
\
__val; \
})
#define __write_64bit_c2_split(source, sel, val) \
do { \
unsigned long __flags; \
\
local_irq_save(__flags); \
if (sel == 0) \
__asm__ __volatile__( \
".set\tmips64\n\t" \
"dsll\t%L0, %L0, 32\n\t" \
"dsrl\t%L0, %L0, 32\n\t" \
"dsll\t%M0, %M0, 32\n\t" \
"or\t%L0, %L0, %M0\n\t" \
"dmtc2\t%L0, " #source "\n\t" \
".set\tmips0\n\t" \
: : "r" (val)); \
else \
__asm__ __volatile__( \
".set\tmips64\n\t" \
"dsll\t%L0, %L0, 32\n\t" \
"dsrl\t%L0, %L0, 32\n\t" \
"dsll\t%M0, %M0, 32\n\t" \
"or\t%L0, %L0, %M0\n\t" \
"dmtc2\t%L0, " #source ", " #sel "\n\t" \
".set\tmips0\n\t" \
: : "r" (val)); \
local_irq_restore(__flags); \
} while (0)
#define __read_32bit_c2_register(source, sel) \
({ uint32_t __res; \
if (sel == 0) \
__asm__ __volatile__( \
".set\tmips32\n\t" \
"mfc2\t%0, " #source "\n\t" \
".set\tmips0\n\t" \
: "=r" (__res)); \
else \
__asm__ __volatile__( \
".set\tmips32\n\t" \
"mfc2\t%0, " #source ", " #sel "\n\t" \
".set\tmips0\n\t" \
: "=r" (__res)); \
__res; \
})
#define __read_64bit_c2_register(source, sel) \
({ unsigned long long __res; \
if (sizeof(unsigned long) == 4) \
__res = __read_64bit_c2_split(source, sel); \
else if (sel == 0) \
__asm__ __volatile__( \
".set\tmips64\n\t" \
"dmfc2\t%0, " #source "\n\t" \
".set\tmips0\n\t" \
: "=r" (__res)); \
else \
__asm__ __volatile__( \
".set\tmips64\n\t" \
"dmfc2\t%0, " #source ", " #sel "\n\t" \
".set\tmips0\n\t" \
: "=r" (__res)); \
__res; \
})
#define __write_64bit_c2_register(register, sel, value) \
do { \
if (sizeof(unsigned long) == 4) \
__write_64bit_c2_split(register, sel, value); \
else if (sel == 0) \
__asm__ __volatile__( \
".set\tmips64\n\t" \
"dmtc2\t%z0, " #register "\n\t" \
".set\tmips0\n\t" \
: : "Jr" (value)); \
else \
__asm__ __volatile__( \
".set\tmips64\n\t" \
"dmtc2\t%z0, " #register ", " #sel "\n\t" \
".set\tmips0\n\t" \
: : "Jr" (value)); \
} while (0)
#define __write_32bit_c2_register(reg, sel, value) \
({ \
if (sel == 0) \
__asm__ __volatile__( \
".set\tmips32\n\t" \
"mtc2\t%z0, " #reg "\n\t" \
".set\tmips0\n\t" \
: : "Jr" (value)); \
else \
__asm__ __volatile__( \
".set\tmips32\n\t" \
"mtc2\t%z0, " #reg ", " #sel "\n\t" \
".set\tmips0\n\t" \
: : "Jr" (value)); \
})
#endif /*_ASM_NLM_MIPS_EXTS_H */
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