cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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pxa-regs.h (1554B)

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