[PATCH 4.20 035/127] MIPS: Loongson: Add Loongson-3A R2.1 basic support
From: Greg Kroah-Hartman
Date: Thu Jan 24 2019 - 14:50:16 EST
4.20-stable review patch. If anyone has any objections, please let me know.
------------------
[ Upstream commit f3ade253615ae6d83aeb72d1c8a96f62a4b4b29b ]
Loongson-3A R2.1 is the bugfix revision of Loongson-3A R2.
All Loongson-3 CPU family:
Code-name Brand-name PRId
Loongson-3A R1 Loongson-3A1000 0x6305
Loongson-3A R2 Loongson-3A2000 0x6308
Loongson-3A R2.1 Loongson-3A2000 0x630c
Loongson-3A R3 Loongson-3A3000 0x6309
Loongson-3A R3.1 Loongson-3A3000 0x630d
Loongson-3B R1 Loongson-3B1000 0x6306
Loongson-3B R2 Loongson-3B1500 0x6307
Signed-off-by: Huacai Chen <chenhc@xxxxxxxxxx>
Signed-off-by: Paul Burton <paul.burton@xxxxxxxx>
Patchwork: https://patchwork.linux-mips.org/patch/21128/
Cc: Ralf Baechle <ralf@xxxxxxxxxxxxxx>
Cc: James Hogan <james.hogan@xxxxxxxx>
Cc: Steven J . Hill <Steven.Hill@xxxxxxxxxx>
Cc: linux-mips@xxxxxxxxxxxxxx
Cc: Fuxin Zhang <zhangfx@xxxxxxxxxx>
Cc: Zhangjin Wu <wuzhangjin@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
arch/mips/include/asm/cpu.h | 3 ++-
arch/mips/include/asm/mach-loongson64/kernel-entry-init.h | 4 ++--
arch/mips/kernel/cpu-probe.c | 3 ++-
arch/mips/kernel/idle.c | 2 +-
arch/mips/loongson64/common/env.c | 3 ++-
arch/mips/loongson64/loongson-3/smp.c | 3 ++-
arch/mips/mm/c-r4k.c | 2 +-
drivers/platform/mips/cpu_hwmon.c | 3 ++-
8 files changed, 14 insertions(+), 9 deletions(-)
diff --git a/arch/mips/include/asm/cpu.h b/arch/mips/include/asm/cpu.h
index dacbdb84516a..532b49b1dbb3 100644
--- a/arch/mips/include/asm/cpu.h
+++ b/arch/mips/include/asm/cpu.h
@@ -248,8 +248,9 @@
#define PRID_REV_LOONGSON3A_R1 0x0005
#define PRID_REV_LOONGSON3B_R1 0x0006
#define PRID_REV_LOONGSON3B_R2 0x0007
-#define PRID_REV_LOONGSON3A_R2 0x0008
+#define PRID_REV_LOONGSON3A_R2_0 0x0008
#define PRID_REV_LOONGSON3A_R3_0 0x0009
+#define PRID_REV_LOONGSON3A_R2_1 0x000c
#define PRID_REV_LOONGSON3A_R3_1 0x000d
/*
diff --git a/arch/mips/include/asm/mach-loongson64/kernel-entry-init.h b/arch/mips/include/asm/mach-loongson64/kernel-entry-init.h
index cbac603ced19..b5e288a12dfe 100644
--- a/arch/mips/include/asm/mach-loongson64/kernel-entry-init.h
+++ b/arch/mips/include/asm/mach-loongson64/kernel-entry-init.h
@@ -31,7 +31,7 @@
/* Enable STFill Buffer */
mfc0 t0, CP0_PRID
andi t0, (PRID_IMP_MASK | PRID_REV_MASK)
- slti t0, (PRID_IMP_LOONGSON_64 | PRID_REV_LOONGSON3A_R2)
+ slti t0, (PRID_IMP_LOONGSON_64 | PRID_REV_LOONGSON3A_R2_0)
bnez t0, 1f
mfc0 t0, CP0_CONFIG6
or t0, 0x100
@@ -60,7 +60,7 @@
/* Enable STFill Buffer */
mfc0 t0, CP0_PRID
andi t0, (PRID_IMP_MASK | PRID_REV_MASK)
- slti t0, (PRID_IMP_LOONGSON_64 | PRID_REV_LOONGSON3A_R2)
+ slti t0, (PRID_IMP_LOONGSON_64 | PRID_REV_LOONGSON3A_R2_0)
bnez t0, 1f
mfc0 t0, CP0_CONFIG6
or t0, 0x100
diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c
index d535fc706a8b..f70cf6447cfb 100644
--- a/arch/mips/kernel/cpu-probe.c
+++ b/arch/mips/kernel/cpu-probe.c
@@ -1843,7 +1843,8 @@ static inline void cpu_probe_loongson(struct cpuinfo_mips *c, unsigned int cpu)
switch (c->processor_id & PRID_IMP_MASK) {
case PRID_IMP_LOONGSON_64: /* Loongson-2/3 */
switch (c->processor_id & PRID_REV_MASK) {
- case PRID_REV_LOONGSON3A_R2:
+ case PRID_REV_LOONGSON3A_R2_0:
+ case PRID_REV_LOONGSON3A_R2_1:
c->cputype = CPU_LOONGSON3;
__cpu_name[cpu] = "ICT Loongson-3";
set_elf_platform(cpu, "loongson3a");
diff --git a/arch/mips/kernel/idle.c b/arch/mips/kernel/idle.c
index 046846999efd..909b7a87c89c 100644
--- a/arch/mips/kernel/idle.c
+++ b/arch/mips/kernel/idle.c
@@ -183,7 +183,7 @@ void __init check_wait(void)
cpu_wait = r4k_wait;
break;
case CPU_LOONGSON3:
- if ((c->processor_id & PRID_REV_MASK) >= PRID_REV_LOONGSON3A_R2)
+ if ((c->processor_id & PRID_REV_MASK) >= PRID_REV_LOONGSON3A_R2_0)
cpu_wait = r4k_wait;
break;
diff --git a/arch/mips/loongson64/common/env.c b/arch/mips/loongson64/common/env.c
index 8f68ee02a8c2..72e5f8fb2b35 100644
--- a/arch/mips/loongson64/common/env.c
+++ b/arch/mips/loongson64/common/env.c
@@ -197,7 +197,8 @@ void __init prom_init_env(void)
cpu_clock_freq = 797000000;
break;
case PRID_REV_LOONGSON3A_R1:
- case PRID_REV_LOONGSON3A_R2:
+ case PRID_REV_LOONGSON3A_R2_0:
+ case PRID_REV_LOONGSON3A_R2_1:
case PRID_REV_LOONGSON3A_R3_0:
case PRID_REV_LOONGSON3A_R3_1:
cpu_clock_freq = 900000000;
diff --git a/arch/mips/loongson64/loongson-3/smp.c b/arch/mips/loongson64/loongson-3/smp.c
index b5c1e0aa955e..8fba0aa48bf4 100644
--- a/arch/mips/loongson64/loongson-3/smp.c
+++ b/arch/mips/loongson64/loongson-3/smp.c
@@ -682,7 +682,8 @@ void play_dead(void)
play_dead_at_ckseg1 =
(void *)CKSEG1ADDR((unsigned long)loongson3a_r1_play_dead);
break;
- case PRID_REV_LOONGSON3A_R2:
+ case PRID_REV_LOONGSON3A_R2_0:
+ case PRID_REV_LOONGSON3A_R2_1:
case PRID_REV_LOONGSON3A_R3_0:
case PRID_REV_LOONGSON3A_R3_1:
play_dead_at_ckseg1 =
diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c
index 2a6ad461286f..96d666a0f4a0 100644
--- a/arch/mips/mm/c-r4k.c
+++ b/arch/mips/mm/c-r4k.c
@@ -1381,7 +1381,7 @@ static void probe_pcache(void)
c->dcache.ways *
c->dcache.linesz;
c->dcache.waybit = 0;
- if ((prid & PRID_REV_MASK) >= PRID_REV_LOONGSON3A_R2)
+ if ((prid & PRID_REV_MASK) >= PRID_REV_LOONGSON3A_R2_0)
c->options |= MIPS_CPU_PREFETCH;
break;
diff --git a/drivers/platform/mips/cpu_hwmon.c b/drivers/platform/mips/cpu_hwmon.c
index f66521c7f846..42efcb850722 100644
--- a/drivers/platform/mips/cpu_hwmon.c
+++ b/drivers/platform/mips/cpu_hwmon.c
@@ -25,9 +25,10 @@ int loongson3_cpu_temp(int cpu)
case PRID_REV_LOONGSON3A_R1:
reg = (reg >> 8) & 0xff;
break;
- case PRID_REV_LOONGSON3A_R2:
case PRID_REV_LOONGSON3B_R1:
case PRID_REV_LOONGSON3B_R2:
+ case PRID_REV_LOONGSON3A_R2_0:
+ case PRID_REV_LOONGSON3A_R2_1:
reg = ((reg >> 8) & 0xff) - 100;
break;
case PRID_REV_LOONGSON3A_R3_0:
--
2.19.1