mirror of
https://github.com/tbsdtv/linux_media.git
synced 2025-07-23 04:33:26 +02:00
ca5999fde0
The include/linux/pgtable.h is going to be the home of generic page table manipulation functions. Start with moving asm-generic/pgtable.h to include/linux/pgtable.h and make the latter include asm/pgtable.h. Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Cain <bcain@codeaurora.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Chris Zankel <chris@zankel.net> Cc: "David S. Miller" <davem@davemloft.net> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Greentime Hu <green.hu@gmail.com> Cc: Greg Ungerer <gerg@linux-m68k.org> Cc: Guan Xuetao <gxt@pku.edu.cn> Cc: Guo Ren <guoren@kernel.org> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Helge Deller <deller@gmx.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Ley Foon Tan <ley.foon.tan@intel.com> Cc: Mark Salter <msalter@redhat.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Matt Turner <mattst88@gmail.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Simek <monstr@monstr.eu> Cc: Nick Hu <nickhu@andestech.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Richard Weinberger <richard@nod.at> Cc: Rich Felker <dalias@libc.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Stafford Horne <shorne@gmail.com> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Tony Luck <tony.luck@intel.com> Cc: Vincent Chen <deanbo422@gmail.com> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Will Deacon <will@kernel.org> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Link: http://lkml.kernel.org/r/20200514170327.31389-3-rppt@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
67 lines
1.8 KiB
C
67 lines
1.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef _ASM_FIXMAP_H
|
|
#define _ASM_FIXMAP_H
|
|
|
|
#define FIXADDR_START 0xffc00000UL
|
|
#define FIXADDR_END 0xfff00000UL
|
|
#define FIXADDR_TOP (FIXADDR_END - PAGE_SIZE)
|
|
|
|
#include <asm/kmap_types.h>
|
|
#include <linux/pgtable.h>
|
|
|
|
enum fixed_addresses {
|
|
FIX_EARLYCON_MEM_BASE,
|
|
__end_of_permanent_fixed_addresses,
|
|
|
|
FIX_KMAP_BEGIN = __end_of_permanent_fixed_addresses,
|
|
FIX_KMAP_END = FIX_KMAP_BEGIN + (KM_TYPE_NR * NR_CPUS) - 1,
|
|
|
|
/* Support writing RO kernel text via kprobes, jump labels, etc. */
|
|
FIX_TEXT_POKE0,
|
|
FIX_TEXT_POKE1,
|
|
|
|
__end_of_fixmap_region,
|
|
|
|
/*
|
|
* Share the kmap() region with early_ioremap(): this is guaranteed
|
|
* not to clash since early_ioremap() is only available before
|
|
* paging_init(), and kmap() only after.
|
|
*/
|
|
#define NR_FIX_BTMAPS 32
|
|
#define FIX_BTMAPS_SLOTS 7
|
|
#define TOTAL_FIX_BTMAPS (NR_FIX_BTMAPS * FIX_BTMAPS_SLOTS)
|
|
|
|
FIX_BTMAP_END = __end_of_permanent_fixed_addresses,
|
|
FIX_BTMAP_BEGIN = FIX_BTMAP_END + TOTAL_FIX_BTMAPS - 1,
|
|
__end_of_early_ioremap_region
|
|
};
|
|
|
|
static const enum fixed_addresses __end_of_fixed_addresses =
|
|
__end_of_fixmap_region > __end_of_early_ioremap_region ?
|
|
__end_of_fixmap_region : __end_of_early_ioremap_region;
|
|
|
|
#define FIXMAP_PAGE_COMMON (L_PTE_YOUNG | L_PTE_PRESENT | L_PTE_XN | L_PTE_DIRTY)
|
|
|
|
#define FIXMAP_PAGE_NORMAL (pgprot_kernel | L_PTE_XN)
|
|
#define FIXMAP_PAGE_RO (FIXMAP_PAGE_NORMAL | L_PTE_RDONLY)
|
|
|
|
/* Used by set_fixmap_(io|nocache), both meant for mapping a device */
|
|
#define FIXMAP_PAGE_IO (FIXMAP_PAGE_COMMON | L_PTE_MT_DEV_SHARED | L_PTE_SHARED)
|
|
#define FIXMAP_PAGE_NOCACHE FIXMAP_PAGE_IO
|
|
|
|
#define __early_set_fixmap __set_fixmap
|
|
|
|
#ifdef CONFIG_MMU
|
|
|
|
void __set_fixmap(enum fixed_addresses idx, phys_addr_t phys, pgprot_t prot);
|
|
void __init early_fixmap_init(void);
|
|
|
|
#include <asm-generic/fixmap.h>
|
|
|
|
#else
|
|
|
|
static inline void early_fixmap_init(void) { }
|
|
|
|
#endif
|
|
#endif
|