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Message-Id: <20200725014529.1143208-4-jiaxun.yang@flygoat.com>
Date: Sat, 25 Jul 2020 09:45:17 +0800
From: Jiaxun Yang <jiaxun.yang@...goat.com>
To: linux-mips@...r.kernel.org
Cc: Jiaxun Yang <jiaxun.yang@...goat.com>,
Rob Herring <robh+dt@...nel.org>,
Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
Huacai Chen <chenhc@...ote.com>,
Frank Rowand <frowand.list@...il.com>,
Paul Burton <paulburton@...nel.org>,
Nick Desaulniers <ndesaulniers@...gle.com>,
Arnd Bergmann <arnd@...db.de>, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH v3 3/5] MIPS: Loongson64: Enlarge IO_SPACE_LIMIT
It can be very big on LS7A PCH systems.
Signed-off-by: Jiaxun Yang <jiaxun.yang@...goat.com>
--
v3: Move IO_SPACE_LIMIT to spaces.h
---
arch/mips/include/asm/io.h | 2 --
arch/mips/include/asm/mach-generic/spaces.h | 4 ++++
arch/mips/include/asm/mach-loongson64/spaces.h | 3 +--
3 files changed, 5 insertions(+), 4 deletions(-)
diff --git a/arch/mips/include/asm/io.h b/arch/mips/include/asm/io.h
index 346fffd9e972..8ca53f17c7c2 100644
--- a/arch/mips/include/asm/io.h
+++ b/arch/mips/include/asm/io.h
@@ -51,8 +51,6 @@
/* ioswab[bwlq], __mem_ioswab[bwlq] are defined in mangle-port.h */
-#define IO_SPACE_LIMIT 0xffff
-
/*
* On MIPS I/O ports are memory mapped, so we access them using normal
* load/store instructions. mips_io_port_base is the virtual address to
diff --git a/arch/mips/include/asm/mach-generic/spaces.h b/arch/mips/include/asm/mach-generic/spaces.h
index ee5ebe98f6cf..c3ac06a6acd2 100644
--- a/arch/mips/include/asm/mach-generic/spaces.h
+++ b/arch/mips/include/asm/mach-generic/spaces.h
@@ -14,6 +14,10 @@
#include <asm/mipsregs.h>
+#ifndef IO_SPACE_LIMIT
+#define IO_SPACE_LIMIT 0xffff
+#endif
+
/*
* This gives the physical RAM offset.
*/
diff --git a/arch/mips/include/asm/mach-loongson64/spaces.h b/arch/mips/include/asm/mach-loongson64/spaces.h
index 3de0ac9d8829..ce04e998a37b 100644
--- a/arch/mips/include/asm/mach-loongson64/spaces.h
+++ b/arch/mips/include/asm/mach-loongson64/spaces.h
@@ -11,8 +11,7 @@
#define PCI_IOSIZE SZ_16M
#define MAP_BASE (PCI_IOBASE + PCI_IOSIZE)
-/* Reserved at the start of PCI_IOBASE for legacy drivers */
-#define MMIO_LOWER_RESERVED 0x10000
+#define IO_SPACE_LIMIT (PCI_IOSIZE - 1)
#include <asm/mach-generic/spaces.h>
#endif
--
2.28.0.rc1
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