[PATCH] X86: cpu_debug support for VIA / Centaur CPU's
From: Harald Welte
Date: Tue Jun 09 2009 - 04:30:03 EST
This patch adds the MSR definitions for the VIA/Centaur CPU models
to cpu_debug.c
Signed-off-by: Harald Welte <HaraldWelte@xxxxxxxxxxx>
---
arch/x86/include/asm/cpu_debug.h | 21 +++++-
arch/x86/kernel/cpu/cpu_debug.c | 176 ++++++++++++++++++++++++++++++++++++++
2 files changed, 196 insertions(+), 1 deletions(-)
diff --git a/arch/x86/include/asm/cpu_debug.h b/arch/x86/include/asm/cpu_debug.h
index 2228020..3790657 100644
--- a/arch/x86/include/asm/cpu_debug.h
+++ b/arch/x86/include/asm/cpu_debug.h
@@ -134,6 +134,12 @@ enum cpu_processor_bit {
CPU_AMD_0F_BIT,
CPU_AMD_10_BIT,
CPU_AMD_11_BIT,
+/* Centaur */
+ CPU_CENTAUR_C3_BIT,
+ CPU_CENTAUR_C5_BIT,
+ CPU_CENTAUR_C7A_BIT,
+ CPU_CENTAUR_C7D_BIT,
+ CPU_CENTAUR_NANO_BIT,
};
#define CPU_INTEL_PENTIUM (1 << CPU_INTEL_PENTIUM_BIT)
@@ -183,8 +189,21 @@ enum cpu_processor_bit {
/* Select all supported AMD CPUs */
#define CPU_AMD_ALL (CPU_AMD_K6 | CPU_K7_PLUS)
+
+#define CPU_CENT_C3 (1 << CPU_CENTAUR_C3_BIT)
+#define CPU_CENT_C5 (1 << CPU_CENTAUR_C5_BIT)
+#define CPU_CENT_C7A (1 << CPU_CENTAUR_C7A_BIT)
+#define CPU_CENT_C7D (1 << CPU_CENTAUR_C7D_BIT)
+#define CPU_CENT_NANO (1 << CPU_CENTAUR_NANO_BIT)
+
+#define CPU_CENT_C7 (CPU_CENT_C7A | CPU_CENT_C7D)
+#define CPU_CENT_C7_PLUS (CPU_CENT_C7 | CPU_CENT_NANO)
+
+#define CPU_CENT_ALL (CPU_CENT_C3 | CPU_CENT_C5 | CPU_CENT_C7 \
+ | CPU_CENT_NANO)
+
/* Select all supported CPUs */
-#define CPU_ALL (CPU_INTEL_ALL | CPU_AMD_ALL)
+#define CPU_ALL (CPU_INTEL_ALL | CPU_AMD_ALL | CPU_CENT_ALL)
#define MAX_CPU_FILES 512
diff --git a/arch/x86/kernel/cpu/cpu_debug.c b/arch/x86/kernel/cpu/cpu_debug.c
index 46e29ab..7add52b 100644
--- a/arch/x86/kernel/cpu/cpu_debug.c
+++ b/arch/x86/kernel/cpu/cpu_debug.c
@@ -2,6 +2,7 @@
* CPU x86 architecture debug code
*
* Copyright(C) 2009 Jaswinder Singh Rajput
+ * Copyright(C) 2009 VIA Technology, Inc.
*
* For licencing details see kernel-base/COPYING
*/
@@ -225,6 +226,93 @@ static struct cpu_debug_range cpu_amd_range[] = {
{ 0xC0011022, 0xC0011023, CPU_CONF, CPU_K10_PLUS, },
};
+/* Centaur Registers Range */
+static struct cpu_debug_range cpu_centaur_range[] = {
+ { 0x00000000, 0x00000001, CPU_MC, CPU_CENT_NANO },
+ { 0x00000006, 0x00000007, CPU_MONITOR, CPU_CENT_NANO },
+ { 0x00000010, 0x00000010, CPU_TIME, CPU_CENT_C7_PLUS },
+ { 0x00000017, 0x00000017, CPU_PLATFORM, CPU_CENT_NANO },
+ { 0x0000001B, 0x0000001B, CPU_APIC, CPU_CENT_C7_PLUS, },
+ { 0x0000002A, 0x0000002A, CPU_POWERON, CPU_CENT_C7_PLUS, },
+ { 0x0000003A, 0x0000003A, CPU_CONTROL, CPU_CENT_NANO, },
+ /* IUA32_BIOS_UDPT_TRIG, trigger bios update */
+ { 0x00000079, 0x00000079, CPU_BIOS, CPU_CENT_NANO, },
+ /* IA32_BIOS_SIGN_ID, determine ucode update level */
+ { 0x0000008B, 0x0000008B, CPU_BIOS, CPU_CENT_NANO, },
+ /* IA32_SMM_MONITOR_CTL */
+ { 0x0000009B, 0x0000009B, CPU_MONITOR, CPU_CENT_NANO, },
+ { 0x000000C1, 0x000000C2, CPU_PMC, CPU_CENT_C7_PLUS, },
+ { 0x000000C3, 0x000000C3, CPU_PMC, CPU_CENT_NANO, },
+ /* MSR_FSB_FREQ */
+ { 0x000000CD, 0x000000CD, CPU_FREQ, CPU_CENT_NANO, },
+ /* IA32_MPERF, IA32_APERF */
+ { 0x000000E7, 0x000000E8, CPU_PERF, CPU_CENT_C7_PLUS, },
+ /* IA32_MTRCAP */
+ { 0x000000FE, 0x000000FE, CPU_MTRR, CPU_CENT_C7_PLUS, },
+ /* MSR_BBL_CR_CTL3 */
+ { 0x0000011E, 0x0000011E, CPU_CACHE, CPU_CENT_C7_PLUS, },
+ /* IA32_SYSENTER_{CS,ESP,EIP} */
+ { 0x00000174, 0x00000176, CPU_SYSENTER, CPU_CENT_C7_PLUS, },
+ { 0x00000186, 0x00000187, CPU_PMC, CPU_CENT_C7_PLUS, },
+ /* performance status, performance control */
+ { 0x00000198, 0x00000199, CPU_PERF, CPU_CENT_C7_PLUS, },
+ /* clock modulation */
+ { 0x0000019A, 0x0000019A, CPU_FREQ, CPU_CENT_C7_PLUS },
+ /* thermal interrupt / status / control */
+ { 0x0000019B, 0x0000019D, CPU_THERM, CPU_CENT_C7_PLUS },
+ /* MISC_Enable, enable TM1/TM2/TM3 */
+ { 0x000001A0, 0x000001A0, CPU_MISC, CPU_CENT_C7_PLUS, },
+ /* IA32_LATFORM_BRV */
+ { 0x000001A1, 0x000001A1, CPU_PLATFORM, CPU_CENT_NANO, },
+ /* IA32_DEBUGCTLA */
+ { 0x000001D9, 0x000001D9, CPU_DEBUG, CPU_CENT_NANO, },
+ { 0x00000200, 0x0000020F, CPU_MTRR, CPU_CENT_C7_PLUS, },
+ { 0x00000250, 0x00000250, CPU_MTRR, CPU_CENT_C7_PLUS, },
+ { 0x00000258, 0x00000259, CPU_MTRR, CPU_CENT_C7_PLUS, },
+ { 0x00000268, 0x0000026F, CPU_MTRR, CPU_CENT_C7_PLUS, },
+ /* IA32_CR_PAT */
+ { 0x00000277, 0x00000277, CPU_PAT, CPU_CENT_NANO, },
+ { 0x000002FF, 0x000002FF, CPU_MTRR, CPU_CENT_C7_PLUS, },
+ { 0x00000309, 0x0000030B, CPU_PMC, CPU_CENT_NANO, },
+ /* IA32_PERF_CAPABILITIES */
+ { 0x00000345, 0x00000345, CPU_PMC, CPU_CENT_NANO, },
+ /* IA32_PERF_{FIXED_CTR_CTRL,GLOBAL_{STATUS,CTRL,OVF_CTRL}} */
+ { 0x0000038D, 0x00000390, CPU_PMC, CPU_CENT_NANO, },
+ /* IA32_PEBS_ENABLE */
+ { 0x000003F1, 0x000003F1, CPU_PMC, CPU_CENT_NANO, },
+ { 0x00000400, 0x00000412, CPU_MC, CPU_CENT_NANO, },
+ { 0x00000480, 0x0000048B, CPU_VMX, CPU_CENT_NANO, },
+ /* FCR5: ucode update status */
+ { 0x00001025, 0x00001025, CPU_BIOS, CPU_CENT_NANO, },
+ { 0x00001107, 0x00001109, CPU_FEATURES, CPU_CENT_C7, },
+ /* Performance Status Register */
+ { 0x0000110A, 0x0000110A, CPU_FEATURES, CPU_CENT_C7D, },
+ { 0x0000110B, 0x0000110B, CPU_MISC, CPU_CENT_C7, },
+ /* HCR2/DSCR2: Overstress VID, Parallax Temp, Inflection ratio */
+ { 0x00001140, 0x00001142, CPU_FREQ, CPU_CENT_C7D, },
+ /* user defined temperature threshuld */
+ { 0x00001167, 0x00001167, CPU_THERM, CPU_CENT_C7, },
+ /* die temperature in degrees C */
+ { 0x00001169, 0x00001169, CPU_THERM, CPU_CENT_C7, },
+ /* CENT_HARDWARECTRL3 */
+ { 0x00001203, 0x00001203, CPU_FEATURES, CPU_CENT_NANO, },
+ /* change reported steppling/model/family */
+ { 0x00001204, 0x00001204, CPU_MISC, CPU_CENT_C7_PLUS, },
+ /* characters of alternate vendor string */
+ { 0x00001206, 0x00001207, CPU_MISC, CPU_CENT_C7_PLUS, },
+ /* CENT_INFLECTION_RATIO */
+ { 0x00001406, 0x00001406, CPU_THERM, CPU_CENT_NANO, },
+ /* thermal monitor temperature in celsius */
+ { 0x00001423, 0x00001423, CPU_THERM, CPU_CENT_NANO, },
+ /* CENT_TMREFCNT{0,1} */
+ { 0x00001424, 0x00001425, CPU_TIME, CPU_CENT_NANO, },
+ /* IA32_EFER */
+ { 0xC0000080, 0xC0000080, CPU_FEATURES, CPU_CENT_NANO, },
+ /* IA32_{STAR,LSTAR,CSTAR,FMASK} */
+ { 0xC0000081, 0xC0000084, CPU_CALL, CPU_CENT_NANO, },
+ /* IA32_{FS_BASE,GS_BASE,KERNEL_GS_BASE} */
+ { 0xC0000100, 0xC0000102, CPU_BASE, CPU_CENT_NANO, },
+};
/* Intel */
static int get_intel_modelflag(unsigned model)
@@ -310,6 +398,77 @@ static int get_amd_modelflag(unsigned model)
return flag;
}
+/* VIA / Centaur */
+static int get_centaur_modelflag(unsigned model)
+{
+ int flag;
+
+ switch ((model >> 8) & 0xff) {
+ case 5:
+ switch (model & 0xff) {
+ case 4:
+ /* IDT WinChip C6 */
+ case 8:
+ /* IDT WinChip 2 */
+ case 9:
+ /* IDT WinChip 3 */
+ default:
+ flag = CPU_NONE;
+ break;
+ }
+ break;
+ case 6:
+ switch (model & 0xff) {
+ case 0x00:
+ /* Cyrix 6x86 MX */
+ flag = CPU_NONE;
+ break;
+ case 0x05:
+ /* VIA Cyrix III */
+ flag = CPU_NONE;
+ break;
+ case 0x06:
+ /* VIA Cyrix III Samuel */
+ flag = CPU_NONE;
+ break;
+ case 0x07:
+ /* 0..7 VIA C3 Samuel II / C3 */
+ /* 8..F VIA C3 Ezra / Eden ESP */
+ flag = CPU_CENT_C3;
+ break;
+ case 0x08:
+ /* 0..7 VIA C3 Ezra-T / Eden ESP */
+ flag = CPU_CENT_C5;
+ break;
+ case 0x09:
+ /* VIA Antaur */
+ flag = CPU_NONE;
+ break;
+ case 0x0a:
+ /* C7-M Type A, Esther core 90nm SOI */
+ flag = CPU_CENT_C7A;
+ break;
+ case 0x0d:
+ /* C7-M Type D, Esther core 90nm */
+ flag = CPU_CENT_C7D;
+ break;
+ case 0x0f:
+ /* Nano 65nm */
+ flag = CPU_CENT_NANO;
+ break;
+ default:
+ flag = CPU_NONE;
+ break;
+ }
+ break;
+ default:
+ flag = CPU_NONE;
+ break;
+ }
+
+ return flag;
+}
+
static int get_cpu_modelflag(unsigned cpu)
{
int flag;
@@ -323,6 +482,9 @@ static int get_cpu_modelflag(unsigned cpu)
case X86_VENDOR_AMD:
flag = get_amd_modelflag(flag & 0xffff);
break;
+ case X86_VENDOR_CENTAUR:
+ flag = get_centaur_modelflag(flag);
+ break;
default:
flag = CPU_NONE;
break;
@@ -342,6 +504,9 @@ static int get_cpu_range_count(unsigned cpu)
case X86_VENDOR_AMD:
index = ARRAY_SIZE(cpu_amd_range);
break;
+ case X86_VENDOR_CENTAUR:
+ index = ARRAY_SIZE(cpu_centaur_range);
+ break;
default:
index = 0;
break;
@@ -375,6 +540,11 @@ static int is_typeflag_valid(unsigned cpu, unsigned flag)
(cpu_amd_range[i].flag & flag))
return 1;
break;
+ case X86_VENDOR_CENTAUR:
+ if ((cpu_centaur_range[i].model & modelflag) &&
+ (cpu_centaur_range[i].flag & flag))
+ return 1;
+ break;
}
}
@@ -404,6 +574,12 @@ static unsigned get_cpu_range(unsigned cpu, unsigned *min, unsigned *max,
*max = cpu_amd_range[index].max;
}
break;
+ case X86_VENDOR_CENTAUR:
+ if ((cpu_centaur_range[index].model & modelflag) &&
+ (cpu_centaur_range[index].flag & flag)) {
+ *min = cpu_centaur_range[index].min;
+ *max = cpu_centaur_range[index].max;
+ }
}
return *max;
--
1.6.3.1
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