linux-kernel - [PATCH 6/6] MIPS: Loongson64: Move decode_cpucfg() to loongson

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Message-Id: <1603958581-4723-7-git-send-email-yangtiezhu@loongson.cn>
Date:   Thu, 29 Oct 2020 16:03:01 +0800
From:   Tiezhu Yang <yangtiezhu@...ngson.cn>
To:     Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Huacai Chen <chenhc@...ote.com>,
        Jiaxun Yang <jiaxun.yang@...goat.com>
Cc:     linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org,
        Xuefeng Li <lixuefeng@...ngson.cn>
Subject: [PATCH 6/6] MIPS: Loongson64: Move decode_cpucfg() to loongson_regs.h

Since decode_cpucfg() is only used for Loongson64, just move
it to loongson_regs.h to avoid the pollution of common code
with #ifdef CONFIG_CPU_LOONGSON64.

Signed-off-by: Tiezhu Yang <yangtiezhu@...ngson.cn>
---
 .../include/asm/mach-loongson64/loongson_regs.h    | 24 +++++++++++++++++
 arch/mips/kernel/cpu-probe.c                       | 31 +---------------------
 2 files changed, 25 insertions(+), 30 deletions(-)

diff --git a/arch/mips/include/asm/mach-loongson64/loongson_regs.h b/arch/mips/include/asm/mach-loongson64/loongson_regs.h
index 1659935..2d469d6 100644
--- a/arch/mips/include/asm/mach-loongson64/loongson_regs.h
+++ b/arch/mips/include/asm/mach-loongson64/loongson_regs.h
@@ -129,6 +129,30 @@ static inline u32 read_cpucfg(u32 reg)
 #define LOONGSON_CFG7_GCCAEQRP	BIT(0)
 #define LOONGSON_CFG7_UCAWINP	BIT(1)
 
+static inline void decode_cpucfg(struct cpuinfo_mips *c)
+{
+	u32 cfg1 = read_cpucfg(LOONGSON_CFG1);
+	u32 cfg2 = read_cpucfg(LOONGSON_CFG2);
+	u32 cfg3 = read_cpucfg(LOONGSON_CFG3);
+
+	if (cfg1 & LOONGSON_CFG1_MMI)
+		c->ases |= MIPS_ASE_LOONGSON_MMI;
+
+	if (cfg2 & LOONGSON_CFG2_LEXT1)
+		c->ases |= MIPS_ASE_LOONGSON_EXT;
+
+	if (cfg2 & LOONGSON_CFG2_LEXT2)
+		c->ases |= MIPS_ASE_LOONGSON_EXT2;
+
+	if (cfg2 & LOONGSON_CFG2_LSPW) {
+		c->options |= MIPS_CPU_LDPTE;
+		c->guest.options |= MIPS_CPU_LDPTE;
+	}
+
+	if (cfg3 & LOONGSON_CFG3_LCAMP)
+		c->ases |= MIPS_ASE_LOONGSON_CAM;
+}
+
 static inline bool cpu_has_csr(void)
 {
 	if (cpu_has_cfg())
diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c
index e685369..1fa2c8b 100644
--- a/arch/mips/kernel/cpu-probe.c
+++ b/arch/mips/kernel/cpu-probe.c
@@ -31,6 +31,7 @@
 #include "fpu-probe.h"
 
 #include <asm/mach-loongson64/cpucfg-emul.h>
+#include <asm/mach-loongson64/loongson_regs.h>
 
 /* Hardware capabilities */
 unsigned int elf_hwcap __read_mostly;
@@ -1692,33 +1693,6 @@ static inline void cpu_probe_cavium(struct cpuinfo_mips *c, unsigned int cpu)
 	}
 }
 
-#ifdef CONFIG_CPU_LOONGSON64
-#include <loongson_regs.h>
-
-static inline void decode_cpucfg(struct cpuinfo_mips *c)
-{
-	u32 cfg1 = read_cpucfg(LOONGSON_CFG1);
-	u32 cfg2 = read_cpucfg(LOONGSON_CFG2);
-	u32 cfg3 = read_cpucfg(LOONGSON_CFG3);
-
-	if (cfg1 & LOONGSON_CFG1_MMI)
-		c->ases |= MIPS_ASE_LOONGSON_MMI;
-
-	if (cfg2 & LOONGSON_CFG2_LEXT1)
-		c->ases |= MIPS_ASE_LOONGSON_EXT;
-
-	if (cfg2 & LOONGSON_CFG2_LEXT2)
-		c->ases |= MIPS_ASE_LOONGSON_EXT2;
-
-	if (cfg2 & LOONGSON_CFG2_LSPW) {
-		c->options |= MIPS_CPU_LDPTE;
-		c->guest.options |= MIPS_CPU_LDPTE;
-	}
-
-	if (cfg3 & LOONGSON_CFG3_LCAMP)
-		c->ases |= MIPS_ASE_LOONGSON_CAM;
-}
-
 static inline void cpu_probe_loongson(struct cpuinfo_mips *c, unsigned int cpu)
 {
 	decode_configs(c);
@@ -1787,9 +1761,6 @@ static inline void cpu_probe_loongson(struct cpuinfo_mips *c, unsigned int cpu)
 		break;
 	}
 }
-#else
-static inline void cpu_probe_loongson(struct cpuinfo_mips *c, unsigned int cpu) { }
-#endif
 
 static inline void cpu_probe_ingenic(struct cpuinfo_mips *c, unsigned int cpu)
 {
-- 
2.1.0