linux-kernel - [PATCH] MIPS: Add KSEG*ADDR definitions to CONFIG

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Date:   Tue, 10 Dec 2019 20:27:39 +0300
From:   Denis Efremov <efremov@...ux.com>
To:     Ralf Baechle <ralf@...ux-mips.org>
Cc:     Denis Efremov <efremov@...ux.com>,
        Paul Burton <paulburton@...nel.org>,
        James Hogan <jhogan@...nel.org>, linux-mips@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] MIPS: Add KSEG*ADDR definitions to CONFIG_64BIT

The patch adds KSEG0ADDR, KSEG1ADDR, KSEG2ADDR, KSEG3ADDR
definitions to CONFIG_64BIT ifdef. This fixes broken compilation:
  CC      drivers/watchdog/mtx-1_wdt.o
In file included from drivers/watchdog/mtx-1_wdt.c:44:
./arch/mips/include/asm/mach-au1x00/au1000.h: In function ‘alchemy_rdsys’:
./arch/mips/include/asm/mach-au1x00/au1000.h:603:36: error: implicit
  declaration of function ‘KSEG1ADDR’; did you mean ‘CKSEG1ADDR’?
  [-Werror=implicit-function-declaration]

Signed-off-by: Denis Efremov <efremov@...ux.com>
---
 arch/mips/include/asm/addrspace.h | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/arch/mips/include/asm/addrspace.h b/arch/mips/include/asm/addrspace.h
index 59a48c60a065..db663654c1fd 100644
--- a/arch/mips/include/asm/addrspace.h
+++ b/arch/mips/include/asm/addrspace.h
@@ -65,6 +65,10 @@
 #define XKSSEG			_CONST64_(0x4000000000000000)
 #define XKPHYS			_CONST64_(0x8000000000000000)
 #define XKSEG			_CONST64_(0xc000000000000000)
+#define KSEG0			_CONST64_(0xffffffff80000000)
+#define KSEG1			_CONST64_(0xffffffffa0000000)
+#define KSSEG			_CONST64_(0xffffffffc0000000)
+#define KSEG3			_CONST64_(0xffffffffe0000000)
 #define CKSEG0			_CONST64_(0xffffffff80000000)
 #define CKSEG1			_CONST64_(0xffffffffa0000000)
 #define CKSSEG			_CONST64_(0xffffffffc0000000)
@@ -75,6 +79,14 @@
 #define CKSEG2ADDR(a)		(CPHYSADDR(a) | CKSEG2)
 #define CKSEG3ADDR(a)		(CPHYSADDR(a) | CKSEG3)
 
+/*
+ * Map an address to a certain kernel segment
+ */
+#define KSEG0ADDR(a)		(CPHYSADDR(a) | KSEG0)
+#define KSEG1ADDR(a)		(CPHYSADDR(a) | KSEG1)
+#define KSEG2ADDR(a)		(CPHYSADDR(a) | KSEG2)
+#define KSEG3ADDR(a)		(CPHYSADDR(a) | KSEG3)
+
 #else
 
 #define CKSEG0ADDR(a)		(CPHYSADDR(a) | KSEG0)
-- 
2.20.1