diff options
Diffstat (limited to 'include/asm-arm/arch-xscale')
| -rw-r--r-- | include/asm-arm/arch-xscale/bitfield.h | 113 | ||||
| -rw-r--r-- | include/asm-arm/arch-xscale/hardware.h | 153 |
2 files changed, 266 insertions, 0 deletions
diff --git a/include/asm-arm/arch-xscale/bitfield.h b/include/asm-arm/arch-xscale/bitfield.h new file mode 100644 index 0000000000..f1f0e3387d --- /dev/null +++ b/include/asm-arm/arch-xscale/bitfield.h @@ -0,0 +1,113 @@ +/* + * FILE bitfield.h + * + * Version 1.1 + * Author Copyright (c) Marc A. Viredaz, 1998 + * DEC Western Research Laboratory, Palo Alto, CA + * Date April 1998 (April 1997) + * System Advanced RISC Machine (ARM) + * Language C or ARM Assembly + * Purpose Definition of macros to operate on bit fields. + */ + + + +#ifndef __BITFIELD_H +#define __BITFIELD_H + +#ifndef __ASSEMBLY__ +#define UData(Data) ((unsigned long) (Data)) +#else +#define UData(Data) (Data) +#endif + + +/* + * MACRO: Fld + * + * Purpose + * The macro "Fld" encodes a bit field, given its size and its shift value + * with respect to bit 0. + * + * Note + * A more intuitive way to encode bit fields would have been to use their + * mask. However, extracting size and shift value information from a bit + * field's mask is cumbersome and might break the assembler (255-character + * line-size limit). + * + * Input + * Size Size of the bit field, in number of bits. + * Shft Shift value of the bit field with respect to bit 0. + * + * Output + * Fld Encoded bit field. + */ + +#define Fld(Size, Shft) (((Size) << 16) + (Shft)) + + +/* + * MACROS: FSize, FShft, FMsk, FAlnMsk, F1stBit + * + * Purpose + * The macros "FSize", "FShft", "FMsk", "FAlnMsk", and "F1stBit" return + * the size, shift value, mask, aligned mask, and first bit of a + * bit field. + * + * Input + * Field Encoded bit field (using the macro "Fld"). + * + * Output + * FSize Size of the bit field, in number of bits. + * FShft Shift value of the bit field with respect to bit 0. + * FMsk Mask for the bit field. + * FAlnMsk Mask for the bit field, aligned on bit 0. + * F1stBit First bit of the bit field. + */ + +#define FSize(Field) ((Field) >> 16) +#define FShft(Field) ((Field) & 0x0000FFFF) +#define FMsk(Field) (((UData (1) << FSize (Field)) - 1) << FShft (Field)) +#define FAlnMsk(Field) ((UData (1) << FSize (Field)) - 1) +#define F1stBit(Field) (UData (1) << FShft (Field)) + + +/* + * MACRO: FInsrt + * + * Purpose + * The macro "FInsrt" inserts a value into a bit field by shifting the + * former appropriately. + * + * Input + * Value Bit-field value. + * Field Encoded bit field (using the macro "Fld"). + * + * Output + * FInsrt Bit-field value positioned appropriately. + */ + +#define FInsrt(Value, Field) \ + (UData (Value) << FShft (Field)) + + +/* + * MACRO: FExtr + * + * Purpose + * The macro "FExtr" extracts the value of a bit field by masking and + * shifting it appropriately. + * + * Input + * Data Data containing the bit-field to be extracted. + * Field Encoded bit field (using the macro "Fld"). + * + * Output + * FExtr Bit-field value. + */ + +#define FExtr(Data, Field) \ + ((UData (Data) >> FShft (Field)) & FAlnMsk (Field)) + + +#endif /* __BITFIELD_H */ diff --git a/include/asm-arm/arch-xscale/hardware.h b/include/asm-arm/arch-xscale/hardware.h new file mode 100644 index 0000000000..b84ea48df1 --- /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 */ |