1e6acc406SArnd Bergmann /* SPDX-License-Identifier: GPL-2.0 */ 2e6acc406SArnd Bergmann /* 3e6acc406SArnd Bergmann * Author: Nicolas Pitre 4e6acc406SArnd Bergmann * Created: Jun 15, 2001 5e6acc406SArnd Bergmann * Copyright: MontaVista Software Inc. 6e6acc406SArnd Bergmann */ 7e6acc406SArnd Bergmann #ifndef __ASM_MACH_PXA_REGS_H 8e6acc406SArnd Bergmann #define __ASM_MACH_PXA_REGS_H 9e6acc406SArnd Bergmann 10e6acc406SArnd Bergmann /* 11e6acc406SArnd Bergmann * Workarounds for at least 2 errata so far require this. 12e6acc406SArnd Bergmann * The mapping is set in mach-pxa/generic.c. 13e6acc406SArnd Bergmann */ 14e6acc406SArnd Bergmann #define UNCACHED_PHYS_0 0xfe000000 15e6acc406SArnd Bergmann #define UNCACHED_PHYS_0_SIZE 0x00100000 16e6acc406SArnd Bergmann 17e6acc406SArnd Bergmann /* 18e6acc406SArnd Bergmann * Intel PXA2xx internal register mapping: 19e6acc406SArnd Bergmann * 20e6acc406SArnd Bergmann * 0x40000000 - 0x41ffffff <--> 0xf2000000 - 0xf3ffffff 21e6acc406SArnd Bergmann * 0x44000000 - 0x45ffffff <--> 0xf4000000 - 0xf5ffffff 22e6acc406SArnd Bergmann * 0x48000000 - 0x49ffffff <--> 0xf6000000 - 0xf7ffffff 23e6acc406SArnd Bergmann * 0x4c000000 - 0x4dffffff <--> 0xf8000000 - 0xf9ffffff 24e6acc406SArnd Bergmann * 0x50000000 - 0x51ffffff <--> 0xfa000000 - 0xfbffffff 25e6acc406SArnd Bergmann * 0x54000000 - 0x55ffffff <--> 0xfc000000 - 0xfdffffff 26e6acc406SArnd Bergmann * 0x58000000 - 0x59ffffff <--> 0xfe000000 - 0xffffffff 27e6acc406SArnd Bergmann * 28e6acc406SArnd Bergmann * Note that not all PXA2xx chips implement all those addresses, and the 29e6acc406SArnd Bergmann * kernel only maps the minimum needed range of this mapping. 30e6acc406SArnd Bergmann */ 31e6acc406SArnd Bergmann #define io_v2p(x) (0x3c000000 + ((x) & 0x01ffffff) + (((x) & 0x0e000000) << 1)) 32e6acc406SArnd Bergmann #define io_p2v(x) IOMEM(0xf2000000 + ((x) & 0x01ffffff) + (((x) & 0x1c000000) >> 1)) 33e6acc406SArnd Bergmann 34e6acc406SArnd Bergmann #ifndef __ASSEMBLY__ 35e6acc406SArnd Bergmann # define __REG(x) (*((volatile u32 __iomem *)io_p2v(x))) 36e6acc406SArnd Bergmann 37e6acc406SArnd Bergmann /* With indexed regs we don't want to feed the index through io_p2v() 38e6acc406SArnd Bergmann especially if it is a variable, otherwise horrible code will result. */ 39e6acc406SArnd Bergmann # define __REG2(x,y) \ 40e6acc406SArnd Bergmann (*(volatile u32 __iomem*)((u32)&__REG(x) + (y))) 41e6acc406SArnd Bergmann 42e6acc406SArnd Bergmann # define __PREG(x) (io_v2p((u32)&(x))) 43e6acc406SArnd Bergmann 44e6acc406SArnd Bergmann #else 45e6acc406SArnd Bergmann 46e6acc406SArnd Bergmann # define __REG(x) io_p2v(x) 47e6acc406SArnd Bergmann # define __PREG(x) io_v2p(x) 48e6acc406SArnd Bergmann 49e6acc406SArnd Bergmann #endif 50e6acc406SArnd Bergmann 51e6acc406SArnd Bergmann 52e6acc406SArnd Bergmann #endif 53