ia64/linux-2.6.18-xen.hg

view include/asm-arm/arch-pxa/hardware.h @ 782:9ab1c319531f

merge with linux-2.6.18-xen.hg
author Isaku Yamahata <yamahata@valinux.co.jp>
date Wed Jan 28 13:07:23 2009 +0900 (2009-01-28)
parents 831230e53067
children
line source
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 */
13 #ifndef __ASM_ARCH_HARDWARE_H
14 #define __ASM_ARCH_HARDWARE_H
16 /*
17 * We requires absolute addresses.
18 */
19 #define PCIO_BASE 0
21 /*
22 * Workarounds for at least 2 errata so far require this.
23 * The mapping is set in mach-pxa/generic.c.
24 */
25 #define UNCACHED_PHYS_0 0xff000000
26 #define UNCACHED_ADDR UNCACHED_PHYS_0
28 /*
29 * Intel PXA2xx internal register mapping:
30 *
31 * 0x40000000 - 0x41ffffff <--> 0xf2000000 - 0xf3ffffff
32 * 0x44000000 - 0x45ffffff <--> 0xf4000000 - 0xf5ffffff
33 * 0x48000000 - 0x49ffffff <--> 0xf6000000 - 0xf7ffffff
34 * 0x4c000000 - 0x4dffffff <--> 0xf8000000 - 0xf9ffffff
35 * 0x50000000 - 0x51ffffff <--> 0xfa000000 - 0xfbffffff
36 * 0x54000000 - 0x55ffffff <--> 0xfc000000 - 0xfdffffff
37 * 0x58000000 - 0x59ffffff <--> 0xfe000000 - 0xffffffff
38 *
39 * Note that not all PXA2xx chips implement all those addresses, and the
40 * kernel only maps the minimum needed range of this mapping.
41 */
42 #define io_p2v(x) (0xf2000000 + ((x) & 0x01ffffff) + (((x) & 0x1c000000) >> 1))
43 #define io_v2p(x) (0x3c000000 + ((x) & 0x01ffffff) + (((x) & 0x0e000000) << 1))
45 #ifndef __ASSEMBLY__
47 # define __REG(x) (*((volatile u32 *)io_p2v(x)))
49 /* With indexed regs we don't want to feed the index through io_p2v()
50 especially if it is a variable, otherwise horrible code will result. */
51 # define __REG2(x,y) \
52 (*(volatile u32 *)((u32)&__REG(x) + (y)))
54 # define __PREG(x) (io_v2p((u32)&(x)))
56 #else
58 # define __REG(x) io_p2v(x)
59 # define __PREG(x) io_v2p(x)
61 #endif
63 #ifndef __ASSEMBLY__
65 /*
66 * Handy routine to set GPIO alternate functions
67 */
68 extern void pxa_gpio_mode( int gpio_mode );
70 /*
71 * Routine to enable or disable CKEN
72 */
73 extern void pxa_set_cken(int clock, int enable);
75 /*
76 * return current memory and LCD clock frequency in units of 10kHz
77 */
78 extern unsigned int get_memclk_frequency_10khz(void);
79 extern unsigned int get_lcdclk_frequency_10khz(void);
81 #endif
83 #endif /* _ASM_ARCH_HARDWARE_H */