2 * linux/include/asm-arm/arch-pxa/hardware.h
4 * Author: Nicolas Pitre
5 * Created: Jun 15, 2001
6 * Copyright: MontaVista Software Inc.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
12 * Note: This file was taken from linux-2.4.19-rmk4-pxa1
14 * - 2003/01/20 implementation specifics activated
15 * Robert Schwebel <r.schwebel@pengutronix.de>
18 #ifndef __ASM_ARCH_HARDWARE_H
19 #define __ASM_ARCH_HARDWARE_H
21 #include <linux/config.h>
22 #include <asm/mach-types.h>
26 * These are statically mapped PCMCIA IO space for designs using it as a
27 * generic IO bus, typically with ISA parts, hardwired IDE interfaces, etc.
28 * The actual PCMCIA code is mapping required IO region at run time.
30 #define PCMCIA_IO_0_BASE 0xf6000000
31 #define PCMCIA_IO_1_BASE 0xf7000000
35 * We requires absolute addresses.
40 * Workarounds for at least 2 errata so far require this.
41 * The mapping is set in mach-pxa/generic.c.
43 #define UNCACHED_PHYS_0 0xff000000
44 #define UNCACHED_ADDR UNCACHED_PHYS_0
47 * Intel PXA internal I/O mappings:
49 * 0x40000000 - 0x41ffffff <--> 0xf8000000 - 0xf9ffffff
50 * 0x44000000 - 0x45ffffff <--> 0xfa000000 - 0xfbffffff
51 * 0x48000000 - 0x49ffffff <--> 0xfc000000 - 0xfdffffff
54 /* FIXME: Only this does work for u-boot... find out why... [RS] */
55 #define UBOOT_REG_FIX 1
60 #define io_p2v(x) ( ((x) | 0xbe000000) ^ (~((x) >> 1) & 0x06000000) )
61 #define io_v2p( x ) ( ((x) & 0x41ffffff) ^ ( ((x) & 0x06000000) << 1) )
64 * This __REG() version gives the same results as the one above, except
65 * that we are fooling gcc somehow so it generates far better and smaller
66 * assembly code for access to contigous registers. It's a shame that gcc
67 * doesn't guess this by itself.
69 #include <asm/types.h>
70 typedef struct { volatile u32 offset[4096]; } __regbase;
71 # define __REGP(x) ((__regbase *)((x)&~4095))->offset[((x)&4095)>>2]
72 # define __REG(x) __REGP(io_p2v(x))
75 /* Let's kick gcc's ass again... */
76 # define __REG2(x,y) \
77 ( __builtin_constant_p(y) ? (__REG((x) + (y))) \
78 : (*(volatile u32 *)((u32)&__REG(x) + (y))) )
80 # define __PREG(x) (io_v2p((u32)&(x)))
84 # define __REG(x) io_p2v(x)
85 # define __PREG(x) io_v2p(x)
90 # define io_p2v(PhAdd) (PhAdd)
91 # define __REG(x) (*((volatile u32 *)io_p2v(x)))
92 # define __REG2(x,y) (*(volatile u32 *)((u32)&__REG(x) + (y)))
96 #endif /* UBOOT_REG_FIX */
103 * GPIO edge detection for IRQs:
104 * IRQs are generated on Falling-Edge, Rising-Edge, or both.
105 * This must be called *before* the corresponding IRQ is registered.
106 * Use this instead of directly setting GRER/GFER.
108 #define GPIO_FALLING_EDGE 1
109 #define GPIO_RISING_EDGE 2
110 #define GPIO_BOTH_EDGES 3
111 extern void set_GPIO_IRQ_edge( int gpio_nr, int edge_mask );
114 * Handy routine to set GPIO alternate functions
116 extern void set_GPIO_mode( int gpio_mode );
119 * return current lclk frequency in units of 10kHz
121 extern unsigned int get_lclk_frequency_10khz(void);
127 * Implementation specifics
130 #ifdef CONFIG_ARCH_LUBBOCK
134 #ifdef CONFIG_ARCH_PXA_IDP
138 #ifdef CONFIG_ARCH_PXA_CERF
142 #ifdef CONFIG_ARCH_CSB226
146 #ifdef CONFIG_ARCH_INNOKOM
150 #endif /* _ASM_ARCH_HARDWARE_H */