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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page_32.h (3826B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2/*
      3 * page.h:  Various defines and such for MMU operations on the Sparc for
      4 *          the Linux kernel.
      5 *
      6 * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
      7 */
      8
      9#ifndef _SPARC_PAGE_H
     10#define _SPARC_PAGE_H
     11
     12#include <linux/const.h>
     13
     14#define PAGE_SHIFT   12
     15#define PAGE_SIZE    (_AC(1, UL) << PAGE_SHIFT)
     16#define PAGE_MASK    (~(PAGE_SIZE-1))
     17
     18#ifndef __ASSEMBLY__
     19
     20#define clear_page(page)	 memset((void *)(page), 0, PAGE_SIZE)
     21#define copy_page(to,from) 	memcpy((void *)(to), (void *)(from), PAGE_SIZE)
     22#define clear_user_page(addr, vaddr, page)	\
     23	do { 	clear_page(addr);		\
     24		sparc_flush_page_to_ram(page);	\
     25	} while (0)
     26#define copy_user_page(to, from, vaddr, page)	\
     27	do {	copy_page(to, from);		\
     28		sparc_flush_page_to_ram(page);	\
     29	} while (0)
     30
     31/* The following structure is used to hold the physical
     32 * memory configuration of the machine.  This is filled in
     33 * prom_meminit() and is later used by mem_init() to set up
     34 * mem_map[].  We statically allocate SPARC_PHYS_BANKS+1 of
     35 * these structs, this is arbitrary.  The entry after the
     36 * last valid one has num_bytes==0.
     37 */
     38struct sparc_phys_banks {
     39  unsigned long base_addr;
     40  unsigned long num_bytes;
     41};
     42
     43#define SPARC_PHYS_BANKS 32
     44
     45extern struct sparc_phys_banks sp_banks[SPARC_PHYS_BANKS+1];
     46
     47/* passing structs on the Sparc slow us down tremendously... */
     48
     49/* #define STRICT_MM_TYPECHECKS */
     50
     51#ifdef STRICT_MM_TYPECHECKS
     52/*
     53 * These are used to make use of C type-checking..
     54 */
     55typedef struct { unsigned long pte; } pte_t;
     56typedef struct { unsigned long iopte; } iopte_t;
     57typedef struct { unsigned long pmd; } pmd_t;
     58typedef struct { unsigned long pgd; } pgd_t;
     59typedef struct { unsigned long ctxd; } ctxd_t;
     60typedef struct { unsigned long pgprot; } pgprot_t;
     61typedef struct { unsigned long iopgprot; } iopgprot_t;
     62
     63#define pte_val(x)	((x).pte)
     64#define iopte_val(x)	((x).iopte)
     65#define pmd_val(x)      ((x).pmd)
     66#define pgd_val(x)	((x).pgd)
     67#define ctxd_val(x)	((x).ctxd)
     68#define pgprot_val(x)	((x).pgprot)
     69#define iopgprot_val(x)	((x).iopgprot)
     70
     71#define __pte(x)	((pte_t) { (x) } )
     72#define __pmd(x)	((pmd_t) { { (x) }, })
     73#define __iopte(x)	((iopte_t) { (x) } )
     74#define __pgd(x)	((pgd_t) { (x) } )
     75#define __ctxd(x)	((ctxd_t) { (x) } )
     76#define __pgprot(x)	((pgprot_t) { (x) } )
     77#define __iopgprot(x)	((iopgprot_t) { (x) } )
     78
     79#else
     80/*
     81 * .. while these make it easier on the compiler
     82 */
     83typedef unsigned long pte_t;
     84typedef unsigned long iopte_t;
     85typedef unsigned long pmd_t;
     86typedef unsigned long pgd_t;
     87typedef unsigned long ctxd_t;
     88typedef unsigned long pgprot_t;
     89typedef unsigned long iopgprot_t;
     90
     91#define pte_val(x)	(x)
     92#define iopte_val(x)	(x)
     93#define pmd_val(x)      (x)
     94#define pgd_val(x)	(x)
     95#define ctxd_val(x)	(x)
     96#define pgprot_val(x)	(x)
     97#define iopgprot_val(x)	(x)
     98
     99#define __pte(x)	(x)
    100#define __pmd(x)	(x)
    101#define __iopte(x)	(x)
    102#define __pgd(x)	(x)
    103#define __ctxd(x)	(x)
    104#define __pgprot(x)	(x)
    105#define __iopgprot(x)	(x)
    106
    107#endif
    108
    109typedef pte_t *pgtable_t;
    110
    111#define TASK_UNMAPPED_BASE	0x50000000
    112
    113#else /* !(__ASSEMBLY__) */
    114
    115#define __pgprot(x)	(x)
    116
    117#endif /* !(__ASSEMBLY__) */
    118
    119#define PAGE_OFFSET	0xf0000000
    120#ifndef __ASSEMBLY__
    121extern unsigned long phys_base;
    122extern unsigned long pfn_base;
    123#endif
    124#define __pa(x)			((unsigned long)(x) - PAGE_OFFSET + phys_base)
    125#define __va(x)			((void *)((unsigned long) (x) - phys_base + PAGE_OFFSET))
    126
    127#define virt_to_phys		__pa
    128#define phys_to_virt		__va
    129
    130#define ARCH_PFN_OFFSET		(pfn_base)
    131#define virt_to_page(kaddr)	pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
    132
    133#define pfn_valid(pfn)		(((pfn) >= (pfn_base)) && (((pfn)-(pfn_base)) < max_mapnr))
    134#define virt_addr_valid(kaddr)	((((unsigned long)(kaddr)-PAGE_OFFSET)>>PAGE_SHIFT) < max_mapnr)
    135
    136#include <asm-generic/memory_model.h>
    137#include <asm-generic/getorder.h>
    138
    139#endif /* _SPARC_PAGE_H */