kernel/arch/openrisc/include/asm/io.h, branch linux-rolling-stable

openrisc: mm: convert to GENERIC_IOREMAP

2023-08-18T17:12:34Z

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. For openrisc, the current ioremap() and iounmap() are the same as generic version. After taking GENERIC_IOREMAP way, the old ioremap() and iounmap() can be completely removed. Link: https://lkml.kernel.org/r/20230706154520.11257-10-bhe@redhat.com Signed-off-by: Baoquan He Reviewed-by: Christoph Hellwig Reviewed-by: Mike Rapoport (IBM) Cc: Stafford Horne Cc: Jonas Bonn Cc: Stefan Kristiansson Cc: Alexander Gordeev Cc: Arnd Bergmann Cc: Brian Cain Cc: Catalin Marinas Cc: Christian Borntraeger Cc: Christophe Leroy Cc: Chris Zankel Cc: David Laight Cc: Geert Uytterhoeven Cc: Gerald Schaefer Cc: Heiko Carstens Cc: Helge Deller Cc: "James E.J. Bottomley" Cc: John Paul Adrian Glaubitz Cc: Kefeng Wang Cc: Matthew Wilcox Cc: Max Filippov Cc: Michael Ellerman Cc: Nathan Chancellor Cc: Nicholas Piggin Cc: Niklas Schnelle Cc: Rich Felker Cc: Sven Schnelle Cc: Vasily Gorbik Cc: Vineet Gupta Cc: Will Deacon Cc: Yoshinori Sato Signed-off-by: Andrew Morton

openrisc: io: Define iounmap argument as volatile

2022-07-29T20:50:15Z

When OpenRISC enables PCI it allows for more drivers to be compiled resulting in exposing the following with -Werror. drivers/video/fbdev/riva/fbdev.c: In function 'rivafb_probe': drivers/video/fbdev/riva/fbdev.c:2062:42: error: passing argument 1 of 'iounmap' discards 'volatile' qualifier from pointer target type drivers/video/fbdev/nvidia/nvidia.c: In function 'nvidiafb_probe': drivers/video/fbdev/nvidia/nvidia.c:1414:20: error: passing argument 1 of 'iounmap' discards 'volatile' qualifier from pointer target type drivers/scsi/aic7xxx/aic7xxx_osm.c: In function 'ahc_platform_free': drivers/scsi/aic7xxx/aic7xxx_osm.c:1231:41: error: passing argument 1 of 'iounmap' discards 'volatile' qualifier from pointer target type Most architectures define the iounmap argument to be volatile. To fix this issue we do the same for OpenRISC. This patch must go before PCI is enabled on OpenRISC to avoid any compile failures. Link: https://lore.kernel.org/lkml/20220729033728.GA2195022@roeck-us.net/ Reported-by: Guenter Roeck Tested-by: Guenter Roeck Signed-off-by: Stafford Horne

openrisc: Add pci bus support

2022-07-29T20:50:15Z

This patch adds required definitions to allow for PCI buses on OpenRISC. This is being tested on the OpenRISC QEMU virt platform which is in development. OpenRISC does not have IO ports so we keep the definition of IO_SPACE_LIMIT and PIO_RESERVED to be 0. Note, since commit 66bcd06099bb ("parport_pc: Also enable driver for PCI systems") all platforms that support PCI also need to support parallel port. We add a generic header to support compiling parallel port drivers, though they generally will not work as they require IO ports. Signed-off-by: Stafford Horne

openrisc: io: Add missing __iomem annotation to iounmap()

2021-01-19T21:14:26Z

With C=1: drivers/soc/renesas/rmobile-sysc.c:330:33: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void *addr @@ got void [noderef] __iomem *[assigned] base @@ drivers/soc/renesas/rmobile-sysc.c:330:33: sparse: expected void *addr drivers/soc/renesas/rmobile-sysc.c:330:33: sparse: got void [noderef] __iomem *[assigned] base Fix this by adding the missing __iomem annotation to iounmap(). Reported-by: kernel test robot Signed-off-by: Geert Uytterhoeven Signed-off-by: Stafford Horne

openrisc: io: Fixup defines and move include to the end

2020-08-05T21:01:47Z

This didn't seem to cause any issues, but while working on fixing up sparse annotations for OpenRISC I noticed this. This patch moves the include of asm-generic/io.h to the end of the file. Also, we add defines of ioremap and iounmap, that way we don't get duplicate definitions from asm-generic/io.h. Signed-off-by: Stafford Horne

mm: reorder includes after introduction of linux/pgtable.h

2020-06-09T16:39:13Z

The replacement of with made the include of the latter in the middle of asm includes. Fix this up with the aid of the below script and manual adjustments here and there. import sys import re if len(sys.argv) is not 3: print "USAGE: %s

" % (sys.argv[0]) sys.exit(1) hdr_to_move="#include " % sys.argv[2] moved = False in_hdrs = False with open(sys.argv[1], "r") as f: lines = f.readlines() for _line in lines: line = _line.rstrip(' ') if line == hdr_to_move: continue if line.startswith("#include Signed-off-by: Andrew Morton Cc: Arnd Bergmann Cc: Borislav Petkov Cc: Brian Cain Cc: Catalin Marinas Cc: Chris Zankel Cc: "David S. Miller" Cc: Geert Uytterhoeven Cc: Greentime Hu Cc: Greg Ungerer Cc: Guan Xuetao Cc: Guo Ren Cc: Heiko Carstens Cc: Helge Deller Cc: Ingo Molnar Cc: Ley Foon Tan Cc: Mark Salter Cc: Matthew Wilcox Cc: Matt Turner Cc: Max Filippov Cc: Michael Ellerman Cc: Michal Simek Cc: Nick Hu Cc: Paul Walmsley Cc: Richard Weinberger Cc: Rich Felker Cc: Russell King Cc: Stafford Horne Cc: Thomas Bogendoerfer Cc: Thomas Gleixner Cc: Tony Luck Cc: Vincent Chen Cc: Vineet Gupta Cc: Will Deacon Cc: Yoshinori Sato Link: http://lkml.kernel.org/r/20200514170327.31389-4-rppt@kernel.org Signed-off-by: Linus Torvalds

mm: introduce include/linux/pgtable.h

2020-06-09T16:39:13Z

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 Signed-off-by: Andrew Morton Cc: Arnd Bergmann Cc: Borislav Petkov Cc: Brian Cain Cc: Catalin Marinas Cc: Chris Zankel Cc: "David S. Miller" Cc: Geert Uytterhoeven Cc: Greentime Hu Cc: Greg Ungerer Cc: Guan Xuetao Cc: Guo Ren Cc: Heiko Carstens Cc: Helge Deller Cc: Ingo Molnar Cc: Ley Foon Tan Cc: Mark Salter Cc: Matthew Wilcox Cc: Matt Turner Cc: Max Filippov Cc: Michael Ellerman Cc: Michal Simek Cc: Nick Hu Cc: Paul Walmsley Cc: Richard Weinberger Cc: Rich Felker Cc: Russell King Cc: Stafford Horne Cc: Thomas Bogendoerfer Cc: Thomas Gleixner Cc: Tony Luck Cc: Vincent Chen Cc: Vineet Gupta Cc: Will Deacon Cc: Yoshinori Sato Link: http://lkml.kernel.org/r/20200514170327.31389-3-rppt@kernel.org Signed-off-by: Linus Torvalds

arch: rely on asm-generic/io.h for default ioremap_* definitions

2019-11-11T20:18:19Z

Various architectures that use asm-generic/io.h still defined their own default versions of ioremap_nocache, ioremap_wt and ioremap_wc that point back to plain ioremap directly or indirectly. Remove these definitions and rely on asm-generic/io.h instead. For this to work the backup ioremap_* defintions needs to be changed to purely cpp macros instea of inlines to cover for architectures like openrisc that only define ioremap after including . Signed-off-by: Christoph Hellwig Reviewed-by: Arnd Bergmann Reviewed-by: Palmer Dabbelt

openrisc: map as uncached in ioremap

2019-08-31T02:57:53Z

Openrisc is the only architecture not mapping ioremap as uncached, which has been the default since the Linux 2.6.x days. Switch it over to implement uncached semantics by default. Signed-off-by: Christoph Hellwig Signed-off-by: Stafford Horne

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152

2019-05-30T18:26:32Z

Based on 1 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 as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Allison Randal Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman