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Diffstat (limited to 'include/asm-arm/arch-xscale/hardware.h')
| -rw-r--r-- | include/asm-arm/arch-xscale/hardware.h | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/include/asm-arm/arch-xscale/hardware.h b/include/asm-arm/arch-xscale/hardware.h new file mode 100644 index 0000000..b84ea48 --- /dev/null +++ b/include/asm-arm/arch-xscale/hardware.h @@ -0,0 +1,153 @@ +/* + * 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. + * + * Note: This file was taken from linux-2.4.19-rmk4-pxa1 + * + * - 2003/01/20 implementation specifics activated + * Robert Schwebel <r.schwebel@pengutronix.de> + */ + +#ifndef __ASM_ARCH_HARDWARE_H +#define __ASM_ARCH_HARDWARE_H + +#include <linux/config.h> +#include <asm/mach-types.h> + + +/* + * These are statically mapped PCMCIA IO space for designs using it as a + * generic IO bus, typically with ISA parts, hardwired IDE interfaces, etc. + * The actual PCMCIA code is mapping required IO region at run time. + */ +#define PCMCIA_IO_0_BASE 0xf6000000 +#define PCMCIA_IO_1_BASE 0xf7000000 + + +/* + * 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 PXA internal I/O mappings: + * + * 0x40000000 - 0x41ffffff <--> 0xf8000000 - 0xf9ffffff + * 0x44000000 - 0x45ffffff <--> 0xfa000000 - 0xfbffffff + * 0x48000000 - 0x49ffffff <--> 0xfc000000 - 0xfdffffff + */ + +/* FIXME: Only this does work for u-boot... find out why... [RS] */ +#define UBOOT_REG_FIX 1 + +#ifndef UBOOT_REG_FIX +#ifndef __ASSEMBLY__ + +#define io_p2v(x) ( ((x) | 0xbe000000) ^ (~((x) >> 1) & 0x06000000) ) +#define io_v2p( x ) ( ((x) & 0x41ffffff) ^ ( ((x) & 0x06000000) << 1) ) + +/* + * This __REG() version gives the same results as the one above, except + * that we are fooling gcc somehow so it generates far better and smaller + * assembly code for access to contigous registers. It's a shame that gcc + * doesn't guess this by itself. + */ +#include <asm/types.h> +typedef struct { volatile u32 offset[4096]; } __regbase; +# define __REGP(x) ((__regbase *)((x)&~4095))->offset[((x)&4095)>>2] +# define __REG(x) __REGP(io_p2v(x)) +#endif + +/* Let's kick gcc's ass again... */ +# define __REG2(x,y) \ + ( __builtin_constant_p(y) ? (__REG((x) + (y))) \ + : (*(volatile u32 *)((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 +#endif /* UBOOT_REG_FIX */ + +#ifdef UBOOT_REG_FIX +# undef io_p2v +# undef __REG +# ifndef __ASSEMBLY__ +# define io_p2v(PhAdd) (PhAdd) +# define __REG(x) (*((volatile u32 *)io_p2v(x))) +# define __REG2(x,y) (*(volatile u32 *)((u32)&__REG(x) + (y))) +# else +# define __REG(x) (x) +#endif /* UBOOT_REG_FIX */ + +#include "pxa-regs.h" + +#ifndef __ASSEMBLY__ + +/* + * GPIO edge detection for IRQs: + * IRQs are generated on Falling-Edge, Rising-Edge, or both. + * This must be called *before* the corresponding IRQ is registered. + * Use this instead of directly setting GRER/GFER. + */ +#define GPIO_FALLING_EDGE 1 +#define GPIO_RISING_EDGE 2 +#define GPIO_BOTH_EDGES 3 +extern void set_GPIO_IRQ_edge( int gpio_nr, int edge_mask ); + +/* + * Handy routine to set GPIO alternate functions + */ +extern void set_GPIO_mode( int gpio_mode ); + +/* + * return current lclk frequency in units of 10kHz + */ +extern unsigned int get_lclk_frequency_10khz(void); + +#endif + + +/* + * Implementation specifics + */ + +#ifdef CONFIG_ARCH_LUBBOCK +#include "lubbock.h" +#endif + +#ifdef CONFIG_ARCH_PXA_IDP +#include "idp.h" +#endif + +#ifdef CONFIG_ARCH_PXA_CERF +#include "cerf.h" +#endif + +#ifdef CONFIG_ARCH_CSB226 +#include "csb226.h" +#endif + +#ifdef CONFIG_ARCH_INNOKOM +#include "innokom.h" +#endif + +#endif /* _ASM_ARCH_HARDWARE_H */ |