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b43b3fff04
By taking GENERIC_IOREMAP method, the generic generic_ioremap_prot(), generic_iounmap(), and their generic wrapper ioremap_prot(), ioremap() and iounmap() are all visible and available to arch. Arch needs to provide wrapper functions to override the generic versions if there's arch specific handling in its ioremap_prot(), ioremap() or iounmap(). This change will simplify implementation by removing duplicated code with generic_ioremap_prot() and generic_iounmap(), and has the equivalent functioality as before. Here, add wrapper functions ioremap_prot() and iounmap() for s390's special operation when ioremap() and iounmap(). And also replace including <asm-generic/io.h> with <asm/io.h> in arch/s390/kernel/perf_cpum_sf.c, otherwise building error will be seen because macro defined in <asm/io.h> can't be seen in perf_cpum_sf.c. Link: https://lkml.kernel.org/r/20230706154520.11257-11-bhe@redhat.com Signed-off-by: Baoquan He <bhe@redhat.com> Reviewed-by: Niklas Schnelle <schnelle@linux.ibm.com> Tested-by: Niklas Schnelle <schnelle@linux.ibm.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Mike Rapoport (IBM) <rppt@kernel.org> Cc: Gerald Schaefer <gerald.schaefer@linux.ibm.com> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Alexander Gordeev <agordeev@linux.ibm.com> Cc: Christian Borntraeger <borntraeger@linux.ibm.com> Cc: Sven Schnelle <svens@linux.ibm.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Brian Cain <bcain@quicinc.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Chris Zankel <chris@zankel.net> Cc: David Laight <David.Laight@ACULAB.COM> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Helge Deller <deller@gmx.de> Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com> Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Cc: Jonas Bonn <jonas@southpole.se> Cc: Kefeng Wang <wangkefeng.wang@huawei.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Rich Felker <dalias@libc.org> Cc: Stafford Horne <shorne@gmail.com> Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi> Cc: Vineet Gupta <vgupta@kernel.org> Cc: Will Deacon <will@kernel.org> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
80 lines
2.1 KiB
C
80 lines
2.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* S390 version
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* Copyright IBM Corp. 1999
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* Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com)
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*
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* Derived from "include/asm-i386/io.h"
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*/
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#ifndef _S390_IO_H
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#define _S390_IO_H
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#include <linux/kernel.h>
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#include <asm/page.h>
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#include <asm/pgtable.h>
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#include <asm/pci_io.h>
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#define xlate_dev_mem_ptr xlate_dev_mem_ptr
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void *xlate_dev_mem_ptr(phys_addr_t phys);
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#define unxlate_dev_mem_ptr unxlate_dev_mem_ptr
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void unxlate_dev_mem_ptr(phys_addr_t phys, void *addr);
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#define IO_SPACE_LIMIT 0
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/*
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* I/O memory mapping functions.
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*/
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#define ioremap_prot ioremap_prot
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#define iounmap iounmap
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#define _PAGE_IOREMAP pgprot_val(PAGE_KERNEL)
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#define ioremap_wc(addr, size) \
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ioremap_prot((addr), (size), pgprot_val(pgprot_writecombine(PAGE_KERNEL)))
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#define ioremap_wt(addr, size) \
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ioremap_prot((addr), (size), pgprot_val(pgprot_writethrough(PAGE_KERNEL)))
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static inline void __iomem *ioport_map(unsigned long port, unsigned int nr)
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{
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return NULL;
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}
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static inline void ioport_unmap(void __iomem *p)
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{
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}
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#ifdef CONFIG_PCI
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/*
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* s390 needs a private implementation of pci_iomap since ioremap with its
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* offset parameter isn't sufficient. That's because BAR spaces are not
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* disjunctive on s390 so we need the bar parameter of pci_iomap to find
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* the corresponding device and create the mapping cookie.
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*/
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#define pci_iomap pci_iomap
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#define pci_iomap_range pci_iomap_range
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#define pci_iounmap pci_iounmap
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#define pci_iomap_wc pci_iomap_wc
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#define pci_iomap_wc_range pci_iomap_wc_range
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#define memcpy_fromio(dst, src, count) zpci_memcpy_fromio(dst, src, count)
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#define memcpy_toio(dst, src, count) zpci_memcpy_toio(dst, src, count)
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#define memset_io(dst, val, count) zpci_memset_io(dst, val, count)
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#define mmiowb() zpci_barrier()
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#define __raw_readb zpci_read_u8
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#define __raw_readw zpci_read_u16
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#define __raw_readl zpci_read_u32
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#define __raw_readq zpci_read_u64
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#define __raw_writeb zpci_write_u8
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#define __raw_writew zpci_write_u16
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#define __raw_writel zpci_write_u32
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#define __raw_writeq zpci_write_u64
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#endif /* CONFIG_PCI */
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#include <asm-generic/io.h>
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#endif
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