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linux/include/asm-arm/arch-pxa/hardware.h

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Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
/*
* 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.
*/
#ifndef __ASM_ARCH_HARDWARE_H
#define __ASM_ARCH_HARDWARE_H
/*
* 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 PXA2xx internal register mapping:
*
* 0x40000000 - 0x41ffffff <--> 0xf2000000 - 0xf3ffffff
* 0x44000000 - 0x45ffffff <--> 0xf4000000 - 0xf5ffffff
* 0x48000000 - 0x49ffffff <--> 0xf6000000 - 0xf7ffffff
* 0x4c000000 - 0x4dffffff <--> 0xf8000000 - 0xf9ffffff
* 0x50000000 - 0x51ffffff <--> 0xfa000000 - 0xfbffffff
* 0x54000000 - 0x55ffffff <--> 0xfc000000 - 0xfdffffff
* 0x58000000 - 0x59ffffff <--> 0xfe000000 - 0xffffffff
*
* Note that not all PXA2xx chips implement all those addresses, and the
* kernel only maps the minimum needed range of this mapping.
*/
#define io_p2v(x) (0xf2000000 + ((x) & 0x01ffffff) + (((x) & 0x1c000000) >> 1))
#define io_v2p(x) (0x3c000000 + ((x) & 0x01ffffff) + (((x) & 0x0e000000) << 1))
#ifndef __ASSEMBLY__
[ARM] 3044/1: Fix sparse warnings about incompatible pointer types for register defined in pxa-regs.h Patch from Ian Campbell The sparse warning initially surfaced in sound/arm/pxa2xx-ac97.c because it was using u32 * variables to hold the unsigned long * register addresses. I submitted an ALSA patch for this http://thread.gmane.org/gmane.linux.alsa.devel/27804 issue and it was suggested that it might be preferable to change the register definitions to use u32. Most other subarches seem to use u32 for their register type, at least the ones which use a __REG macro (like the PXA) do. Nico indicated in the thread above that he wouldn't mind this patch. Changing the type required fixes for opposite warnings in the pxa2xx usb gadget code but that was the only new warning introduced on defconfig or lubbock, mainstone and our own PXA255 boards. Signed-off-by: Ian Campbell <icampbell@arcom.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-10-28 15:26:42 +01:00
# define __REG(x) (*((volatile u32 *)io_p2v(x)))
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
/* With indexed regs we don't want to feed the index through io_p2v()
especially if it is a variable, otherwise horrible code will result. */
[ARM] 2892/1: remove gcc workaround for direct access to absolute memory addresses Patch from Nicolas Pitre It used to make a difference in the gcc-2.95 era. However these days modern gcc apparently got better at not being influenced by such constructs (which is good in general) and therefore such workaround is of no real advantage anymore. The good news is that gcc (from version 4.1.0) is now fixed with regards to the defficiency this workaround was trying to address. For those interested the patch can easily be backported to older gcc versions and can be found here: http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/arm/arm.c.diff?r1=1.476&r2=1.478 and also here: http://savannah.gnu.org/cgi-bin/viewcvs/gcc/gcc/gcc/config/arm/arm.c.diff?r1=text&tr1=1.476&r2=text&tr2=1.478&diff_format=u Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-09-08 23:07:40 +01:00
# define __REG2(x,y) \
[ARM] 3044/1: Fix sparse warnings about incompatible pointer types for register defined in pxa-regs.h Patch from Ian Campbell The sparse warning initially surfaced in sound/arm/pxa2xx-ac97.c because it was using u32 * variables to hold the unsigned long * register addresses. I submitted an ALSA patch for this http://thread.gmane.org/gmane.linux.alsa.devel/27804 issue and it was suggested that it might be preferable to change the register definitions to use u32. Most other subarches seem to use u32 for their register type, at least the ones which use a __REG macro (like the PXA) do. Nico indicated in the thread above that he wouldn't mind this patch. Changing the type required fixes for opposite warnings in the pxa2xx usb gadget code but that was the only new warning introduced on defconfig or lubbock, mainstone and our own PXA255 boards. Signed-off-by: Ian Campbell <icampbell@arcom.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-10-28 15:26:42 +01:00
(*(volatile u32 *)((u32)&__REG(x) + (y)))
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
# define __PREG(x) (io_v2p((u32)&(x)))
#else
# define __REG(x) io_p2v(x)
# define __PREG(x) io_v2p(x)
#endif
#ifndef __ASSEMBLY__
/*
* Handy routine to set GPIO alternate functions
*/
extern void pxa_gpio_mode( int gpio_mode );
/*
* Routine to enable or disable CKEN
*/
extern void pxa_set_cken(int clock, int enable);
/*
* return current memory and LCD clock frequency in units of 10kHz
*/
extern unsigned int get_memclk_frequency_10khz(void);
extern unsigned int get_lcdclk_frequency_10khz(void);
#endif
#endif /* _ASM_ARCH_HARDWARE_H */
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