1 /*
2  *  linux/include/asm-arm/arch-pxa/hardware.h
3  *
4  *  Author:	Nicolas Pitre
5  *  Created:	Jun 15, 2001
6  *  Copyright:	MontaVista Software Inc.
7  *
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.
11  *
12  * Note: This file was taken from linux-2.4.19-rmk4-pxa1
13  *
14  * - 2003/01/20 implementation specifics activated
15  *   Robert Schwebel <r.schwebel@pengutronix.de>
16  */
17 
18 #ifndef __ASM_ARCH_HARDWARE_H
19 #define __ASM_ARCH_HARDWARE_H
20 
21 #include <linux/config.h>
22 #include <asm/mach-types.h>
23 
24 
25 /*
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.
29  */
30 #define PCMCIA_IO_0_BASE	0xf6000000
31 #define PCMCIA_IO_1_BASE	0xf7000000
32 
33 
34 /*
35  * We requires absolute addresses.
36  */
37 #define PCIO_BASE		0
38 
39 /*
40  * Workarounds for at least 2 errata so far require this.
41  * The mapping is set in mach-pxa/generic.c.
42  */
43 #define UNCACHED_PHYS_0		0xff000000
44 #define UNCACHED_ADDR		UNCACHED_PHYS_0
45 
46 /*
47  * Intel PXA internal I/O mappings:
48  *
49  * 0x40000000 - 0x41ffffff <--> 0xf8000000 - 0xf9ffffff
50  * 0x44000000 - 0x45ffffff <--> 0xfa000000 - 0xfbffffff
51  * 0x48000000 - 0x49ffffff <--> 0xfc000000 - 0xfdffffff
52  */
53 
54 /* FIXME: Only this does work for u-boot... find out why... [RS] */
55 #define UBOOT_REG_FIX 1
56 
57 #ifndef UBOOT_REG_FIX
58 #ifndef __ASSEMBLY__
59 
60 #define io_p2v(x)	( ((x) | 0xbe000000) ^ (~((x) >> 1) & 0x06000000) )
61 #define io_v2p( x )	( ((x) & 0x41ffffff) ^ ( ((x) & 0x06000000) << 1) )
62 
63 /*
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.
68  */
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))
73 #endif
74 
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))) )
79 
80 # define __PREG(x)	(io_v2p((u32)&(x)))
81 
82 #else
83 
84 # define __REG(x)	io_p2v(x)
85 # define __PREG(x)	io_v2p(x)
86 
87 # undef io_p2v
88 # undef __REG
89 # ifndef __ASSEMBLY__
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)))
93 # else
94 #  define __REG(x) (x)
95 #  ifdef CONFIG_CPU_MONAHANS /* Hack to make this work with mona's pxa-regs.h */
96 #   define __REG_2(x) (x)
97 #   define __REG_3(x) (x)
98 #  endif
99 # endif
100 #endif /* UBOOT_REG_FIX */
101 
102 #include "pxa-regs.h"
103 
104 #ifndef __ASSEMBLY__
105 
106 /*
107  * GPIO edge detection for IRQs:
108  * IRQs are generated on Falling-Edge, Rising-Edge, or both.
109  * This must be called *before* the corresponding IRQ is registered.
110  * Use this instead of directly setting GRER/GFER.
111  */
112 #define GPIO_FALLING_EDGE	1
113 #define GPIO_RISING_EDGE	2
114 #define GPIO_BOTH_EDGES		3
115 extern void set_GPIO_IRQ_edge( int gpio_nr, int edge_mask );
116 
117 /*
118  * Handy routine to set GPIO alternate functions
119  */
120 extern void set_GPIO_mode( int gpio_mode );
121 
122 /*
123  * return current lclk frequency in units of 10kHz
124  */
125 extern unsigned int get_lclk_frequency_10khz(void);
126 
127 #endif
128 
129 
130 /*
131  * Implementation specifics
132  */
133 
134 #ifdef CONFIG_ARCH_LUBBOCK
135 #include "lubbock.h"
136 #endif
137 
138 #ifdef CONFIG_ARCH_PXA_IDP
139 #include "idp.h"
140 #endif
141 
142 #ifdef CONFIG_ARCH_PXA_CERF
143 #include "cerf.h"
144 #endif
145 
146 #ifdef CONFIG_ARCH_CSB226
147 #include "csb226.h"
148 #endif
149 
150 #ifdef CONFIG_ARCH_INNOKOM
151 #include "innokom.h"
152 #endif
153 
154 #ifdef CONFIG_ARCH_PLEB
155 #include "pleb.h"
156 #endif
157 
158 #endif	/* _ASM_ARCH_HARDWARE_H */
159