hardware.h
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- /*
- * linux/include/asm-arm/arch-pxa/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
- /*
- * We requires absolute addresses.
- */
- #define PCIO_BASE 0
- /*
- * Workarounds for at least 2 errata so far require this.
- * The mapping is set in mach-pxa/generic.c.
- */
- #define UNCACHED_PHYS_0 0xff000000
- #define UNCACHED_ADDR UNCACHED_PHYS_0
- /*
- * 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_p2v(x) (0xf2000000 + ((x) & 0x01ffffff) + (((x) & 0x1c000000) >> 1))
- #define io_v2p(x) (0x3c000000 + ((x) & 0x01ffffff) + (((x) & 0x0e000000) << 1))
- #ifndef __ASSEMBLY__
- # define __REG(x) (*((volatile unsigned long *)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 unsigned long *)((unsigned long)&__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__
- /*
- * Handy routine to set GPIO alternate functions
- */
- extern void pxa_gpio_mode( int gpio_mode );
- /*
- * Routine to enable or disable CKEN
- */
- extern void pxa_set_cken(int clock, int enable);
- /*
- * return current memory and LCD clock frequency in units of 10kHz
- */
- extern unsigned int get_memclk_frequency_10khz(void);
- extern unsigned int get_lcdclk_frequency_10khz(void);
- #endif
- #endif /* _ASM_ARCH_HARDWARE_H */