From: Niklas Schnelle <schnelle@linux.ibm.com> To: Arnd Bergmann <arnd@arndb.de>, Vineet Gupta <vgupta@synopsys.com>, "David S. Miller" <davem@davemloft.net> Cc: Nathan Chancellor <nathan@kernel.org>, Nick Desaulniers <ndesaulniers@google.com>, clang-built-linux@googlegroups.com, linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org, linux-snps-arc@lists.infradead.org, sparclinux@vger.kernel.org Subject: [PATCH v6 1/3] sparc: explicitly set PCI_IOBASE to 0 Date: Mon, 10 May 2021 16:52:32 +0200 [thread overview] Message-ID: <20210510145234.594814-2-schnelle@linux.ibm.com> (raw) In-Reply-To: <20210510145234.594814-1-schnelle@linux.ibm.com> Instead of relying on the fallback in asm-generic/io.h which sets PCI_IOBASE 0 if it is not defined set it explicitly. Link: https://lore.kernel.org/lkml/CAK8P3a3PK9zyeP4ymELtc2ZYnymECoACiigw9Za+pvSJpCk5=g@mail.gmail.com/ Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com> --- arch/sparc/include/asm/io.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/sparc/include/asm/io.h b/arch/sparc/include/asm/io.h index 2eefa526b38f..c019e50702c1 100644 --- a/arch/sparc/include/asm/io.h +++ b/arch/sparc/include/asm/io.h @@ -1,6 +1,14 @@ /* SPDX-License-Identifier: GPL-2.0 */ #ifndef ___ASM_SPARC_IO_H #define ___ASM_SPARC_IO_H + +/* + * On LEON PCI addresses below 64k are converted to IO accesses. + * io_remap_xxx() returns a kernel virtual address in the PCI window so + * inb() doesn't need to add an offset. + */ +#define PCI_IOBASE ((void __iomem *)0) + #if defined(__sparc__) && defined(__arch64__) #include <asm/io_64.h> #else -- 2.25.1
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From: Niklas Schnelle <schnelle@linux.ibm.com> To: Arnd Bergmann <arnd@arndb.de>, Vineet Gupta <vgupta@synopsys.com>, "David S. Miller" <davem@davemloft.net> Cc: Nathan Chancellor <nathan@kernel.org>, Nick Desaulniers <ndesaulniers@google.com>, clang-built-linux@googlegroups.com, linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org, linux-snps-arc@lists.infradead.org, sparclinux@vger.kernel.org Subject: [PATCH v6 1/3] sparc: explicitly set PCI_IOBASE to 0 Date: Mon, 10 May 2021 16:52:32 +0200 [thread overview] Message-ID: <20210510145234.594814-2-schnelle@linux.ibm.com> (raw) In-Reply-To: <20210510145234.594814-1-schnelle@linux.ibm.com> Instead of relying on the fallback in asm-generic/io.h which sets PCI_IOBASE 0 if it is not defined set it explicitly. Link: https://lore.kernel.org/lkml/CAK8P3a3PK9zyeP4ymELtc2ZYnymECoACiigw9Za+pvSJpCk5=g@mail.gmail.com/ Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com> --- arch/sparc/include/asm/io.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/sparc/include/asm/io.h b/arch/sparc/include/asm/io.h index 2eefa526b38f..c019e50702c1 100644 --- a/arch/sparc/include/asm/io.h +++ b/arch/sparc/include/asm/io.h @@ -1,6 +1,14 @@ /* SPDX-License-Identifier: GPL-2.0 */ #ifndef ___ASM_SPARC_IO_H #define ___ASM_SPARC_IO_H + +/* + * On LEON PCI addresses below 64k are converted to IO accesses. + * io_remap_xxx() returns a kernel virtual address in the PCI window so + * inb() doesn't need to add an offset. + */ +#define PCI_IOBASE ((void __iomem *)0) + #if defined(__sparc__) && defined(__arch64__) #include <asm/io_64.h> #else -- 2.25.1 _______________________________________________ linux-snps-arc mailing list linux-snps-arc@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-snps-arc
next prev parent reply other threads:[~2021-05-10 14:54 UTC|newest] Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-05-10 14:52 [PATCH v6 0/3] asm-generic/io.h: Silence -Wnull-pointer-arithmetic warning on PCI_IOBASE Niklas Schnelle 2021-05-10 14:52 ` Niklas Schnelle 2021-05-10 14:52 ` Niklas Schnelle [this message] 2021-05-10 14:52 ` [PATCH v6 1/3] sparc: explicitly set PCI_IOBASE to 0 Niklas Schnelle 2021-05-10 14:52 ` [PATCH v6 2/3] risc-v: Use generic io.h helpers for nommu Niklas Schnelle 2021-05-10 14:52 ` Niklas Schnelle 2021-05-10 14:52 ` [PATCH v6 3/3] asm-generic/io.h: warn in inb() and friends with undefined PCI_IOBASE Niklas Schnelle 2021-05-10 14:52 ` Niklas Schnelle
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