forked from Minki/linux
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>
46 lines
1.4 KiB
C
46 lines
1.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
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#ifndef __ASM_CSKY_IO_H
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#define __ASM_CSKY_IO_H
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#include <linux/pgtable.h>
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#include <linux/types.h>
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#include <linux/version.h>
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/*
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* I/O memory access primitives. Reads are ordered relative to any
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* following Normal memory access. Writes are ordered relative to any prior
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* Normal memory access.
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*
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* For CACHEV1 (807, 810), store instruction could fast retire, so we need
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* another mb() to prevent st fast retire.
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*
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* For CACHEV2 (860), store instruction with PAGE_ATTR_NO_BUFFERABLE won't
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* fast retire.
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*/
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#define readb(c) ({ u8 __v = readb_relaxed(c); rmb(); __v; })
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#define readw(c) ({ u16 __v = readw_relaxed(c); rmb(); __v; })
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#define readl(c) ({ u32 __v = readl_relaxed(c); rmb(); __v; })
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#ifdef CONFIG_CPU_HAS_CACHEV2
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#define writeb(v,c) ({ wmb(); writeb_relaxed((v),(c)); })
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#define writew(v,c) ({ wmb(); writew_relaxed((v),(c)); })
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#define writel(v,c) ({ wmb(); writel_relaxed((v),(c)); })
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#else
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#define writeb(v,c) ({ wmb(); writeb_relaxed((v),(c)); mb(); })
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#define writew(v,c) ({ wmb(); writew_relaxed((v),(c)); mb(); })
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#define writel(v,c) ({ wmb(); writel_relaxed((v),(c)); mb(); })
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#endif
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/*
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* I/O memory mapping functions.
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*/
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#define ioremap_wc(addr, size) \
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ioremap_prot((addr), (size), \
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(_PAGE_IOREMAP & ~_CACHE_MASK) | _CACHE_UNCACHED)
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#include <asm-generic/io.h>
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#endif /* __ASM_CSKY_IO_H */
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