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linux/arch/unicore32/include/asm/io.h

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treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-04 08:11:33 +00:00
/* SPDX-License-Identifier: GPL-2.0-only */
unicore32 additional architecture files: low-level lib: misc This patch implements the rest low-level libraries. Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn> Acked-by: Arnd Bergmann <arnd@arndb.de>
2011-01-15 10:23:09 +00:00
/*
* linux/arch/unicore32/include/asm/io.h
*
* Code specific to PKUnity SoC and UniCore ISA
*
* Copyright (C) 2001-2010 GUAN Xue-tao
*/
#ifndef __UNICORE_IO_H__
#define __UNICORE_IO_H__
#ifdef __KERNEL__
#include <asm/byteorder.h>
#include <asm/memory.h>
unicore32: modify io_p2v and io_v2p macros, and adjust PKUNITY_mmio_BASEs 1. remove __REG macro 2. add (void __iomem *) to io_p2v macro 3. add (phys_addr_t) to io_v2p macro 4. add PKUNITY_AHB_BASE and PKUNITY_APB_BASE definitions 5. modify all PKUNITY_mmio_BASEs from physical addr to virtual addr 6. adjust prefix macro for all usage of PKUNITY_mmio_BASEs -- by advice with Arnd Bergmann Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn> Reviewed-by: Arnd Bergmann <arnd@arndb.de>
2011-03-04 10:07:48 +00:00
#define PCI_IOBASE PKUNITY_PCILIO_BASE
unicore32 additional architecture files: low-level lib: misc This patch implements the rest low-level libraries. Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn> Acked-by: Arnd Bergmann <arnd@arndb.de>
2011-01-15 10:23:09 +00:00
#include <asm-generic/io.h>
/*
unicore32: remove ioremap_cached No users of ioremap_cached are left, remove it. Signed-off-by: Christoph Hellwig <hch@lst.de>
2019-08-11 12:03:29 +00:00
* __uc32_ioremap takes CPU physical address.
unicore32 additional architecture files: low-level lib: misc This patch implements the rest low-level libraries. Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn> Acked-by: Arnd Bergmann <arnd@arndb.de>
2011-01-15 10:23:09 +00:00
*/
extern void __iomem *__uc32_ioremap(unsigned long, size_t);
extern void __uc32_iounmap(volatile void __iomem *addr);
/*
* ioremap and friends.
*
* ioremap takes a PCI memory address, as specified in
docs: fix pointers to io-mapping.rst and io_ordering.rst files Those files got moved, but cross-references still point to the wrong places. Fixes: fcd680727157 ("Documentation: Add io-mapping.rst to driver-api manual") Fixes: d1ce350015d8 ("Documentation: Add io_ordering.rst to driver-api manual") Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Reviewed-by: Alex Shi <alex.shi@linux.alibaba.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/c0205119db4fef536272cb0a183b6c14c2c8bf4c.1583927470.git.mchehab+huawei@kernel.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-03-11 11:51:17 +00:00
* Documentation/driver-api/io-mapping.rst.
unicore32 additional architecture files: low-level lib: misc This patch implements the rest low-level libraries. Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn> Acked-by: Arnd Bergmann <arnd@arndb.de>
2011-01-15 10:23:09 +00:00
*
*/
#define ioremap(cookie, size) __uc32_ioremap(cookie, size)
#define iounmap(cookie) __uc32_iounmap(cookie)
arch/unicore32/include/asm/io.h: add readl_relaxed() generic definition Need generic definition for readl_relaxed(), like other architectures have done. Or can not pass compiling with allmodconfig, the related error: CC [M] drivers/message/fusion/mptbase.o drivers/message/fusion/mptbase.c: In function 'mpt_send_handshake_request': drivers/message/fusion/mptbase.c:1224: error: implicit declaration of function 'readl_relaxed' Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com> Acked-by: Xuetao Guan <gxt@mprc.pku.edu.cn> Signed-off-by: Xuetao Guan <gxt@mprc.pku.edu.cn>
2014-05-03 01:06:28 +00:00
#define readb_relaxed readb
#define readw_relaxed readw
#define readl_relaxed readl
unicore32: replace unicore32-specific iomap functions with generic lib implementation 1. define and enable CONFIG_GENERIC_IOMAP 2. define unicore32-specific PCI_IOBASE for asm-generic/io.h 3. define HAVE_ARCH_PIO_SIZE and unicore32-specific PIO_* macros 4. remove all unicore32-specific iomap functions Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn> Reviewed-and-Acked-by: Arnd Bergmann <arnd@arndb.de>
2011-02-27 04:46:06 +00:00
#define HAVE_ARCH_PIO_SIZE
#define PIO_OFFSET (unsigned int)(PCI_IOBASE)
#define PIO_MASK (unsigned int)(IO_SPACE_LIMIT)
#define PIO_RESERVED (PIO_OFFSET + PIO_MASK + 1)
arch:unicore32:mm: add devmem_is_allowed() to support STRICT_DEVMEM unicore32 supports STRICT_DEVMEM, so it needs devmem_is_allowed(), like some of other architectures have done (e.g. arm, powerpc, x86 ...). The related error with allmodconfig: CC drivers/char/mem.o drivers/char/mem.c: In function ‘range_is_allowed’: drivers/char/mem.c:69: error: implicit declaration of function ‘devmem_is_allowed’ make[2]: *** [drivers/char/mem.o] Error 1 make[1]: *** [drivers/char] Error 2 make: *** [drivers] Error 2 Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com> Acked-by: Xuetao Guan <gxt@mprc.pku.edu.cn> Signed-off-by: Xuetao Guan <gxt@mprc.pku.edu.cn>
2014-04-15 01:21:30 +00:00
#ifdef CONFIG_STRICT_DEVMEM
#include <linux/ioport.h>
#include <linux/mm.h>
/*
* devmem_is_allowed() checks to see if /dev/mem access to a certain
* address is valid. The argument is a physical page number.
* We mimic x86 here by disallowing access to system RAM as well as
* device-exclusive MMIO regions. This effectively disable read()/write()
* on /dev/mem.
*/
static inline int devmem_is_allowed(unsigned long pfn)
{
if (iomem_is_exclusive(pfn << PAGE_SHIFT))
return 0;
if (!page_is_ram(pfn))
return 1;
return 0;
}
#endif /* CONFIG_STRICT_DEVMEM */
unicore32 additional architecture files: low-level lib: misc This patch implements the rest low-level libraries. Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn> Acked-by: Arnd Bergmann <arnd@arndb.de>
2011-01-15 10:23:09 +00:00
#endif /* __KERNEL__ */
#endif /* __UNICORE_IO_H__ */
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