cregit-Linux how code gets into the kernel

Release 4.11 arch/arm/mach-pxa/include/mach/hardware.h

/*
 *  arch/arm/mach-pxa/include/mach/hardware.h
 *
 *  Author:     Nicolas Pitre
 *  Created:    Jun 15, 2001
 *  Copyright:  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_HARDWARE_H

#define __ASM_ARCH_HARDWARE_H

#include <mach/addr-map.h>

/*
 * Workarounds for at least 2 errata so far require this.
 * The mapping is set in mach-pxa/generic.c.
 */

#define UNCACHED_PHYS_0		0xfe000000

#define UNCACHED_PHYS_0_SIZE	0x00100000

/*
 * Intel PXA2xx internal register mapping:
 *
 * 0x40000000 - 0x41ffffff <--> 0xf2000000 - 0xf3ffffff
 * 0x44000000 - 0x45ffffff <--> 0xf4000000 - 0xf5ffffff
 * 0x48000000 - 0x49ffffff <--> 0xf6000000 - 0xf7ffffff
 * 0x4c000000 - 0x4dffffff <--> 0xf8000000 - 0xf9ffffff
 * 0x50000000 - 0x51ffffff <--> 0xfa000000 - 0xfbffffff
 * 0x54000000 - 0x55ffffff <--> 0xfc000000 - 0xfdffffff
 * 0x58000000 - 0x59ffffff <--> 0xfe000000 - 0xffffffff
 *
 * Note that not all PXA2xx chips implement all those addresses, and the
 * kernel only maps the minimum needed range of this mapping.
 */

#define io_v2p(x) (0x3c000000 + ((x) & 0x01ffffff) + (((x) & 0x0e000000) << 1))

#define io_p2v(x) IOMEM(0xf2000000 + ((x) & 0x01ffffff) + (((x) & 0x1c000000) >> 1))

#ifndef __ASSEMBLY__

# define __REG(x)	(*((volatile u32 __iomem *)io_p2v(x)))

/* With indexed regs we don't want to feed the index through io_p2v()
   especially if it is a variable, otherwise horrible code will result. */

# define __REG2(x,y)	\
	(*(volatile u32 __iomem*)((u32)&__REG(x) + (y)))


# define __PREG(x)	(io_v2p((u32)&(x)))

#else


# define __REG(x)	io_p2v(x)

# define __PREG(x)	io_v2p(x)

#endif

#ifndef __ASSEMBLY__

#include <asm/cputype.h>

/*
 *   CPU     Stepping     CPU_ID         JTAG_ID
 *
 *  PXA210      B0      0x69052922      0x2926C013
 *  PXA210      B1      0x69052923      0x3926C013
 *  PXA210      B2      0x69052924      0x4926C013
 *  PXA210      C0      0x69052D25      0x5926C013
 *
 *  PXA250      A0      0x69052100      0x09264013
 *  PXA250      A1      0x69052101      0x19264013
 *  PXA250      B0      0x69052902      0x29264013
 *  PXA250      B1      0x69052903      0x39264013
 *  PXA250      B2      0x69052904      0x49264013
 *  PXA250      C0      0x69052D05      0x59264013
 *
 *  PXA255      A0      0x69052D06      0x69264013
 *
 *  PXA26x      A0      0x69052903      0x39264013
 *  PXA26x      B0      0x69052D05      0x59264013
 *
 *  PXA27x      A0      0x69054110      0x09265013
 *  PXA27x      A1      0x69054111      0x19265013
 *  PXA27x      B0      0x69054112      0x29265013
 *  PXA27x      B1      0x69054113      0x39265013
 *  PXA27x      C0      0x69054114      0x49265013
 *  PXA27x      C5      0x69054117      0x79265013
 *
 *  PXA30x      A0      0x69056880      0x0E648013
 *  PXA30x      A1      0x69056881      0x1E648013
 *  PXA31x      A0      0x69056890      0x0E649013
 *  PXA31x      A1      0x69056891      0x1E649013
 *  PXA31x      A2      0x69056892      0x2E649013
 *  PXA32x      B1      0x69056825      0x5E642013
 *  PXA32x      B2      0x69056826      0x6E642013
 *
 *  PXA930      B0      0x69056835      0x5E643013
 *  PXA930      B1      0x69056837      0x7E643013
 *  PXA930      B2      0x69056838      0x8E643013
 *
 *  PXA935      A0      0x56056931      0x1E653013
 *  PXA935      B0      0x56056936      0x6E653013
 *  PXA935      B1      0x56056938      0x8E653013
 */
#ifdef CONFIG_PXA25x

#define __cpu_is_pxa210(id)				\
	({                                              \
                unsigned int _id = (id) & 0xf3f0;       \
                _id == 0x2120;                          \
        })


#define __cpu_is_pxa250(id)				\
	({                                              \
                unsigned int _id = (id) & 0xf3ff;       \
                _id <= 0x2105;                          \
        })


#define __cpu_is_pxa255(id)				\
	({                                              \
                unsigned int _id = (id) & 0xffff;       \
                _id == 0x2d06;                          \
        })


#define __cpu_is_pxa25x(id)				\
	({                                              \
                unsigned int _id = (id) & 0xf300;       \
                _id == 0x2100;                          \
        })
#else

#define __cpu_is_pxa210(id)	(0)

#define __cpu_is_pxa250(id)	(0)

#define __cpu_is_pxa255(id)	(0)

#define __cpu_is_pxa25x(id)	(0)
#endif

#ifdef CONFIG_PXA27x

#define __cpu_is_pxa27x(id)				\
	({                                              \
                unsigned int _id = (id) >> 4 & 0xfff;   \
                _id == 0x411;                           \
        })
#else

#define __cpu_is_pxa27x(id)	(0)
#endif

#ifdef CONFIG_CPU_PXA300

#define __cpu_is_pxa300(id)				\
	({                                              \
                unsigned int _id = (id) >> 4 & 0xfff;   \
                _id == 0x688;                           \
         })
#else

#define __cpu_is_pxa300(id)	(0)
#endif

#ifdef CONFIG_CPU_PXA310

#define __cpu_is_pxa310(id)				\
	({                                              \
                unsigned int _id = (id) >> 4 & 0xfff;   \
                _id == 0x689;                           \
         })
#else

#define __cpu_is_pxa310(id)	(0)
#endif

#ifdef CONFIG_CPU_PXA320

#define __cpu_is_pxa320(id)				\
	({                                              \
                unsigned int _id = (id) >> 4 & 0xfff;   \
                _id == 0x603 || _id == 0x682;           \
         })
#else

#define __cpu_is_pxa320(id)	(0)
#endif

#ifdef CONFIG_CPU_PXA930

#define __cpu_is_pxa930(id)				\
	({                                              \
                unsigned int _id = (id) >> 4 & 0xfff;   \
                _id == 0x683;                           \
         })
#else

#define __cpu_is_pxa930(id)	(0)
#endif

#ifdef CONFIG_CPU_PXA935

#define __cpu_is_pxa935(id)				\
	({                                              \
                unsigned int _id = (id) >> 4 & 0xfff;   \
                _id == 0x693;                           \
         })
#else

#define __cpu_is_pxa935(id)	(0)
#endif


#define cpu_is_pxa210()					\
	({                                              \
                __cpu_is_pxa210(read_cpuid_id());       \
        })


#define cpu_is_pxa250()					\
	({                                              \
                __cpu_is_pxa250(read_cpuid_id());       \
        })


#define cpu_is_pxa255()                                 \
	({                                              \
                __cpu_is_pxa255(read_cpuid_id());       \
        })


#define cpu_is_pxa25x()					\
	({                                              \
                __cpu_is_pxa25x(read_cpuid_id());       \
        })


#define cpu_is_pxa27x()					\
	({                                              \
                __cpu_is_pxa27x(read_cpuid_id());       \
        })


#define cpu_is_pxa300()					\
	({                                              \
                __cpu_is_pxa300(read_cpuid_id());       \
         })


#define cpu_is_pxa310()					\
	({                                              \
                __cpu_is_pxa310(read_cpuid_id());       \
         })


#define cpu_is_pxa320()					\
	({                                              \
                __cpu_is_pxa320(read_cpuid_id());       \
         })


#define cpu_is_pxa930()					\
	({                                              \
                __cpu_is_pxa930(read_cpuid_id());       \
         })


#define cpu_is_pxa935()					\
	({                                              \
                __cpu_is_pxa935(read_cpuid_id());       \
         })



/*
 * CPUID Core Generation Bit
 * <= 0x2 for pxa21x/pxa25x/pxa26x/pxa27x
 */
#if defined(CONFIG_PXA25x) || defined(CONFIG_PXA27x)

#define __cpu_is_pxa2xx(id)				\
	({                                              \
                unsigned int _id = (id) >> 13 & 0x7;    \
                _id <= 0x2;                             \
         })
#else

#define __cpu_is_pxa2xx(id)	(0)
#endif

#ifdef CONFIG_PXA3xx

#define __cpu_is_pxa3xx(id)				\
	({                                              \
                __cpu_is_pxa300(id)                     \
                        || __cpu_is_pxa310(id)          \
                        || __cpu_is_pxa320(id)          \
                        || __cpu_is_pxa93x(id);         \
         })
#else

#define __cpu_is_pxa3xx(id)	(0)
#endif

#if defined(CONFIG_CPU_PXA930) || defined(CONFIG_CPU_PXA935)

#define __cpu_is_pxa93x(id)				\
	({                                              \
                __cpu_is_pxa930(id)                     \
                        || __cpu_is_pxa935(id);         \
         })
#else

#define __cpu_is_pxa93x(id)	(0)
#endif


#define cpu_is_pxa2xx()					\
	({                                              \
                __cpu_is_pxa2xx(read_cpuid_id());       \
         })


#define cpu_is_pxa3xx()					\
	({                                              \
                __cpu_is_pxa3xx(read_cpuid_id());       \
         })


#define cpu_is_pxa93x()					\
	({                                              \
                __cpu_is_pxa93x(read_cpuid_id());       \
         })


/*
 * return current memory and LCD clock frequency in units of 10kHz
 */
extern unsigned int get_memclk_frequency_10khz(void);

#endif

#endif  /* _ASM_ARCH_HARDWARE_H */

Overall Contributors

PersonTokensPropCommitsCommitProp
Eric Miao20945.34%729.17%
Russell King13228.63%520.83%
Nico Pitre8418.22%625.00%
Ian Molton204.34%14.17%
Haojian Zhuang71.52%28.33%
Arnd Bergmann61.30%14.17%
Laurent Pinchart20.43%14.17%
Ezequiel García10.22%14.17%
Total461100.00%24100.00%
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