Release 4.11 arch/arm/mach-ixp4xx/include/mach/cpu.h

/*
 * arch/arm/mach-ixp4xx/include/mach/cpu.h
 *
 * IXP4XX cpu type detection
 *
 * Copyright (C) 2007 MontaVista Software, Inc.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 */

#ifndef __ASM_ARCH_CPU_H__

#define __ASM_ARCH_CPU_H__

#include <linux/io.h>
#include <asm/cputype.h>

/* Processor id value in CP15 Register 0 */

#define IXP42X_PROCESSOR_ID_VALUE	0x690541c0 
/* including unused 0x690541Ex */

#define IXP42X_PROCESSOR_ID_MASK	0xffffffc0


#define IXP43X_PROCESSOR_ID_VALUE	0x69054040

#define IXP43X_PROCESSOR_ID_MASK	0xfffffff0


#define IXP46X_PROCESSOR_ID_VALUE	0x69054200 
/* including IXP455 */

#define IXP46X_PROCESSOR_ID_MASK	0xfffffff0


#define cpu_is_ixp42x_rev_a0() ((read_cpuid_id() & (IXP42X_PROCESSOR_ID_MASK | 0xF)) == \
                                IXP42X_PROCESSOR_ID_VALUE)

#define cpu_is_ixp42x()	((read_cpuid_id() & IXP42X_PROCESSOR_ID_MASK) == \
                         IXP42X_PROCESSOR_ID_VALUE)

#define cpu_is_ixp43x()	((read_cpuid_id() & IXP43X_PROCESSOR_ID_MASK) == \
                         IXP43X_PROCESSOR_ID_VALUE)

#define cpu_is_ixp46x()	((read_cpuid_id() & IXP46X_PROCESSOR_ID_MASK) == \
                         IXP46X_PROCESSOR_ID_VALUE)



static inline u32 ixp4xx_read_feature_bits(void)
{
	u32 val = ~__raw_readl(IXP4XX_EXP_CFG2);

	if (cpu_is_ixp42x_rev_a0())
		return IXP42X_FEATURE_MASK & ~(IXP4XX_FEATURE_RCOMP |
					       IXP4XX_FEATURE_AES);
	if (cpu_is_ixp42x())
		return val & IXP42X_FEATURE_MASK;
	if (cpu_is_ixp43x())
		return val & IXP43X_FEATURE_MASK;
	return val & IXP46X_FEATURE_MASK;
}

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5.17%
1
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58
100.00%
4
100.00%



static inline void ixp4xx_write_feature_bits(u32 value)
{
	__raw_writel(~value, IXP4XX_EXP_CFG2);
}

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100.00%
2
100.00%

#endif  /* _ASM_ARCH_CPU_H */
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Vladimir Barinov
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24.46%
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14.29%
Arnd Bergmann
11
7.91%
1
14.29%
Russell King
4
2.88%
2
28.57%
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139
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7
100.00%
Directory: arch/arm/mach-ixp4xx/include/mach

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