Hello,
This patch adds the VIA CENTAUR CPUs to detection table.
Table was updated to treat future Intel x86 CPUs as VRD10.
Stepping field was added, because some VIA CPUs have
different VRM specs across stepping. I changed the vrm type
to u8 because all drivers use u8 anyway.
Please apply.
Signed-Off-By: Rudolf Marek <r.marek at sh.cvut.cz>
Thanks,
Regards
Rudolf
diff -Naur a/drivers/hwmon/hwmon-vid.c b/drivers/hwmon/hwmon-vid.c
--- a/drivers/hwmon/hwmon-vid.c 2005-10-28 02:02:08.000000000 +0200
+++ b/drivers/hwmon/hwmon-vid.c 2005-11-21 21:21:35.155926250 +0100
@@ -49,20 +49,22 @@
. . . .
11110 = 0.800 V
11111 = 0.000 V (off)
+
+ The 17 specification is in fact Intel Mobile Voltage Positioning -
+ (IMVP-II). You can find more information in the datasheet of Max1718
+ http://www.maxim-ic.com/quick_view2.cfm/qv_pk/2452
+
*/
/* vrm is the VRM/VRD document version multiplied by 10.
val is the 4-, 5- or 6-bit VID code.
Returned value is in mV to avoid floating point in the kernel. */
-int vid_from_reg(int val, int vrm)
+int vid_from_reg(int val, u8 vrm)
{
int vid;
switch(vrm) {
- case 0:
- return 0;
-
case 100: /* VRD 10.0 */
if((val & 0x1f) == 0x1f)
return 0;
@@ -91,10 +93,16 @@
case 84: /* VRM 8.4 */
val &= 0x0f;
/* fall through */
- default: /* VRM 8.2 */
+ case 82: /* VRM 8.2 */
return(val == 0x1f ? 0 :
val & 0x10 ? 5100 - (val) * 100 :
2050 - (val) * 50);
+ case 17: /* Intel IMVP-II */
+ return(val & 0x10 ? 975 - (val & 0xF) * 25 :
+ 1750 - val * 50);
+ default: /* report 0 for unknown */
+ printk(KERN_INFO "hwmon-vid: requested unknown VRM version\n");
+ return 0;
}
}
@@ -108,6 +116,7 @@
u8 vendor;
u8 eff_family;
u8 eff_model;
+ u8 eff_stepping;
int vrm_type;
};
@@ -115,23 +124,28 @@
#ifdef CONFIG_X86
+/* the stepping parameter is highest acceptable stepping for current line */
+
static struct vrm_model vrm_models[] = {
- {X86_VENDOR_AMD, 0x6, ANY, 90}, /* Athlon Duron etc */
- {X86_VENDOR_AMD, 0xF, ANY, 24}, /* Athlon 64, Opteron */
- {X86_VENDOR_INTEL, 0x6, 0x9, 85}, /* 0.13um too */
- {X86_VENDOR_INTEL, 0x6, 0xB, 85}, /* Tualatin */
- {X86_VENDOR_INTEL, 0x6, ANY, 82}, /* any P6 */
- {X86_VENDOR_INTEL, 0x7, ANY, 0}, /* Itanium */
- {X86_VENDOR_INTEL, 0xF, 0x0, 90}, /* P4 */
- {X86_VENDOR_INTEL, 0xF, 0x1, 90}, /* P4 Willamette */
- {X86_VENDOR_INTEL, 0xF, 0x2, 90}, /* P4 Northwood */
- {X86_VENDOR_INTEL, 0xF, 0x3, 100}, /* P4 Prescott */
- {X86_VENDOR_INTEL, 0xF, 0x4, 100}, /* P4 Prescott */
- {X86_VENDOR_INTEL, 0x10,ANY, 0}, /* Itanium 2 */
- {X86_VENDOR_UNKNOWN, ANY, ANY, 0} /* stop here */
+ {X86_VENDOR_AMD, 0x6, ANY, ANY, 90}, /* Athlon Duron etc */
+ {X86_VENDOR_AMD, 0xF, ANY, ANY, 24}, /* Athlon 64, Opteron and above VRM 24 */
+ {X86_VENDOR_INTEL, 0x6, 0x9, ANY, 85}, /* 0.13um too */
+ {X86_VENDOR_INTEL, 0x6, 0xB, ANY, 85}, /* Tualatin */
+ {X86_VENDOR_INTEL, 0x6, ANY, ANY, 82}, /* any P6 */
+ {X86_VENDOR_INTEL, 0x7, ANY, ANY, 0}, /* Itanium */
+ {X86_VENDOR_INTEL, 0xF, 0x0, ANY, 90}, /* P4 */
+ {X86_VENDOR_INTEL, 0xF, 0x1, ANY, 90}, /* P4 Willamette */
+ {X86_VENDOR_INTEL, 0xF, 0x2, ANY, 90}, /* P4 Northwood */
+ {X86_VENDOR_INTEL, 0xF, ANY, ANY, 100}, /* Prescott and above assume VRD 10 */
+ {X86_VENDOR_INTEL, 0x10, ANY, ANY, 0}, /* Itanium 2 */
+ {X86_VENDOR_CENTAUR, 0x6, 0x7, ANY, 85}, /* Eden ESP/Ezra */
+ {X86_VENDOR_CENTAUR, 0x6, 0x8, 0x7, 85}, /* Ezra T */
+ {X86_VENDOR_CENTAUR, 0x6, 0x9, 0x7, 85}, /* Nemiah */
+ {X86_VENDOR_CENTAUR, 0x6, 0x9, ANY, 17}, /* C3-M */
+ {X86_VENDOR_UNKNOWN, ANY, ANY, ANY, 0} /* stop here */
};
-static int find_vrm(u8 eff_family, u8 eff_model, u8 vendor)
+static int find_vrm(u8 eff_family, u8 eff_model, u8 eff_stepping, u8 vendor)
{
int i = 0;
@@ -139,7 +153,8 @@
if (vrm_models[i].vendor==vendor)
if ((vrm_models[i].eff_family==eff_family)
&& ((vrm_models[i].eff_model==eff_model) ||
- (vrm_models[i].eff_model==ANY)))
+ (vrm_models[i].eff_model==ANY)) &&
+ (eff_stepping <= vrm_models[i].eff_stepping))
return vrm_models[i].vrm_type;
i++;
}
@@ -147,11 +162,11 @@
return 0;
}
-int vid_which_vrm(void)
+u8 vid_which_vrm(void)
{
struct cpuinfo_x86 *c = cpu_data;
u32 eax;
- u8 eff_family, eff_model;
+ u8 eff_family, eff_model, eff_stepping;
int vrm_ret;
if (c->x86 < 6) /* Any CPU with family lower than 6 */
@@ -160,20 +175,21 @@
eax = cpuid_eax(1);
eff_family = ((eax & 0x00000F00)>>8);
eff_model = ((eax & 0x000000F0)>>4);
+ eff_stepping = eax & 0xF;
if (eff_family == 0xF) { /* use extended model & family */
eff_family += ((eax & 0x00F00000)>>20);
eff_model += ((eax & 0x000F0000)>>16)<<4;
}
- vrm_ret = find_vrm(eff_family,eff_model,c->x86_vendor);
+ vrm_ret = find_vrm(eff_family, eff_model, eff_stepping, c->x86_vendor);
if (vrm_ret == 0)
printk(KERN_INFO "hwmon-vid: Unknown VRM version of your "
"x86 CPU\n");
return vrm_ret;
}
-/* and now something completely different for the non-x86 world */
+/* and now for something completely different for the non-x86 world */
#else
-int vid_which_vrm(void)
+u8 vid_which_vrm(void)
{
printk(KERN_INFO "hwmon-vid: Unknown VRM version of your CPU\n");
return 0;
