2022-04-04 22:37:04 +02:00
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Author : Nicolas Pitre
* Created : Jun 15 , 2001
* Copyright : MontaVista Software Inc .
*/
# ifndef __ASM_MACH_PXA_REGS_H
# define __ASM_MACH_PXA_REGS_H
/*
* Workarounds for at least 2 errata so far require this .
* The mapping is set in mach - pxa / generic . c .
*/
# define UNCACHED_PHYS_0 0xfe000000
# define UNCACHED_PHYS_0_SIZE 0x00100000
/*
* 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_v2p(x) (0x3c000000 + ((x) & 0x01ffffff) + (((x) & 0x0e000000) << 1))
# define io_p2v(x) IOMEM(0xf2000000 + ((x) & 0x01ffffff) + (((x) & 0x1c000000) >> 1))
# ifndef __ASSEMBLY__
# define __REG(x) (*((volatile u32 __iomem *)io_p2v(x)))
/* 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 . */
# define __REG2(x,y) \
( * ( volatile u32 __iomem * ) ( ( 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
