* available at http://developer.intel.com/.
*
* AMD Athlon 64 and AMD Opteron Processors, AMD Publication 26094,
- * http://support.amd.com/us/Processor_TechDocs/26094.PDF
+ * http://support.amd.com/us/Processor_TechDocs/26094.PDF
* Table 74. VID Code Voltages
* This corresponds to an arbitrary VRM code of 24 in the functions below.
* These CPU models (K8 revision <= E) have 5 VID pins. See also:
{
int vid;
- switch(vrm) {
+ switch (vrm) {
- case 100: /* VRD 10.0 */
+ case 100: /* VRD 10.0 */
/* compute in uV, round to mV */
val &= 0x3f;
- if((val & 0x1f) == 0x1f)
+ if ((val & 0x1f) == 0x1f)
return 0;
- if((val & 0x1f) <= 0x09 || val == 0x0a)
+ if ((val & 0x1f) <= 0x09 || val == 0x0a)
vid = 1087500 - (val & 0x1f) * 25000;
else
vid = 1862500 - (val & 0x1f) * 25000;
- if(val & 0x20)
+ if (val & 0x20)
vid -= 12500;
- return((vid + 500) / 1000);
+ return (vid + 500) / 1000;
case 110: /* Intel Conroe */
/* compute in uV, round to mV */
val &= 0xff;
if (val < 0x02 || val > 0xb2)
return 0;
- return((1600000 - (val - 2) * 6250 + 500) / 1000);
+ return (1600000 - (val - 2) * 6250 + 500) / 1000;
case 24: /* Athlon64 & Opteron */
val &= 0x1f;
case 91: /* VRM 9.1 */
case 90: /* VRM 9.0 */
val &= 0x1f;
- return(val == 0x1f ? 0 :
- 1850 - val * 25);
+ return val == 0x1f ? 0 :
+ 1850 - val * 25;
case 85: /* VRM 8.5 */
val &= 0x1f;
- return((val & 0x10 ? 25 : 0) +
+ return (val & 0x10 ? 25 : 0) +
((val & 0x0f) > 0x04 ? 2050 : 1250) -
- ((val & 0x0f) * 50));
+ ((val & 0x0f) * 50);
case 84: /* VRM 8.4 */
val &= 0x0f;
/* fall through */
case 82: /* VRM 8.2 */
val &= 0x1f;
- return(val == 0x1f ? 0 :
+ return val == 0x1f ? 0 :
val & 0x10 ? 5100 - (val) * 100 :
- 2050 - (val) * 50);
+ 2050 - (val) * 50;
case 17: /* Intel IMVP-II */
val &= 0x1f;
- return(val & 0x10 ? 975 - (val & 0xF) * 25 :
- 1750 - val * 50);
+ return val & 0x10 ? 975 - (val & 0xF) * 25 :
+ 1750 - val * 50;
case 13:
case 131:
val &= 0x3f;
/* Exception for Eden ULV 500 MHz */
if (vrm == 131 && val == 0x3f)
val++;
- return(1708 - val * 16);
+ return 1708 - val * 16;
case 14: /* Intel Core */
/* compute in uV, round to mV */
val &= 0x7f;
- return(val > 0x77 ? 0 : (1500000 - (val * 12500) + 500) / 1000);
+ return val > 0x77 ? 0 : (1500000 - (val * 12500) + 500) / 1000;
default: /* report 0 for unknown */
if (vrm)
pr_warn("Requested unsupported VRM version (%u)\n",
return 0;
}
}
-
+EXPORT_SYMBOL(vid_from_reg);
/*
* After this point is the code to automatically determine which
struct vrm_model {
u8 vendor;
- u8 eff_family;
- u8 eff_model;
- u8 eff_stepping;
+ u8 family;
+ u8 model_from;
+ u8 model_to;
+ u8 stepping_to;
u8 vrm_type;
};
#ifdef CONFIG_X86
/*
- * The stepping parameter is highest acceptable stepping for current line.
+ * The stepping_to parameter is highest acceptable stepping for current line.
* The model match must be exact for 4-bit values. For model values 0x10
* and above (extended model), all models below the parameter will match.
*/
static struct vrm_model vrm_models[] = {
- {X86_VENDOR_AMD, 0x6, ANY, ANY, 90}, /* Athlon Duron etc */
- {X86_VENDOR_AMD, 0xF, 0x3F, ANY, 24}, /* Athlon 64, Opteron */
- /* In theory, all NPT family 0Fh processors have 6 VID pins and should
- thus use vrm 25, however in practice not all mainboards route the
- 6th VID pin because it is never needed. So we use the 5 VID pin
- variant (vrm 24) for the models which exist today. */
- {X86_VENDOR_AMD, 0xF, 0x7F, ANY, 24}, /* NPT family 0Fh */
- {X86_VENDOR_AMD, 0xF, ANY, ANY, 25}, /* future fam. 0Fh */
- {X86_VENDOR_AMD, 0x10, ANY, ANY, 25}, /* NPT family 10h */
-
- {X86_VENDOR_INTEL, 0x6, 0x9, ANY, 13}, /* Pentium M (130 nm) */
- {X86_VENDOR_INTEL, 0x6, 0xB, ANY, 85}, /* Tualatin */
- {X86_VENDOR_INTEL, 0x6, 0xD, ANY, 13}, /* Pentium M (90 nm) */
- {X86_VENDOR_INTEL, 0x6, 0xE, ANY, 14}, /* Intel Core (65 nm) */
- {X86_VENDOR_INTEL, 0x6, 0xF, ANY, 110}, /* Intel Conroe */
- {X86_VENDOR_INTEL, 0x6, ANY, ANY, 82}, /* any P6 */
- {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_CENTAUR, 0x6, 0x7, ANY, 85}, /* Eden ESP/Ezra */
- {X86_VENDOR_CENTAUR, 0x6, 0x8, 0x7, 85}, /* Ezra T */
- {X86_VENDOR_CENTAUR, 0x6, 0x9, 0x7, 85}, /* Nehemiah */
- {X86_VENDOR_CENTAUR, 0x6, 0x9, ANY, 17}, /* C3-M, Eden-N */
- {X86_VENDOR_CENTAUR, 0x6, 0xA, 0x7, 0}, /* No information */
- {X86_VENDOR_CENTAUR, 0x6, 0xA, ANY, 13}, /* C7-M, C7, Eden (Esther) */
- {X86_VENDOR_CENTAUR, 0x6, 0xD, ANY, 134}, /* C7-D, C7-M, C7, Eden (Esther) */
-
- {X86_VENDOR_UNKNOWN, ANY, ANY, ANY, 0} /* stop here */
+ {X86_VENDOR_AMD, 0x6, 0x0, ANY, ANY, 90}, /* Athlon Duron etc */
+ {X86_VENDOR_AMD, 0xF, 0x0, 0x3F, ANY, 24}, /* Athlon 64, Opteron */
+ /*
+ * In theory, all NPT family 0Fh processors have 6 VID pins and should
+ * thus use vrm 25, however in practice not all mainboards route the
+ * 6th VID pin because it is never needed. So we use the 5 VID pin
+ * variant (vrm 24) for the models which exist today.
+ */
+ {X86_VENDOR_AMD, 0xF, 0x40, 0x7F, ANY, 24}, /* NPT family 0Fh */
+ {X86_VENDOR_AMD, 0xF, 0x80, ANY, ANY, 25}, /* future fam. 0Fh */
+ {X86_VENDOR_AMD, 0x10, 0x0, ANY, ANY, 25}, /* NPT family 10h */
+
+ {X86_VENDOR_INTEL, 0x6, 0x0, 0x6, ANY, 82}, /* Pentium Pro,
+ * Pentium II, Xeon,
+ * Mobile Pentium,
+ * Celeron */
+ {X86_VENDOR_INTEL, 0x6, 0x7, 0x7, ANY, 84}, /* Pentium III, Xeon */
+ {X86_VENDOR_INTEL, 0x6, 0x8, 0x8, ANY, 82}, /* Pentium III, Xeon */
+ {X86_VENDOR_INTEL, 0x6, 0x9, 0x9, ANY, 13}, /* Pentium M (130 nm) */
+ {X86_VENDOR_INTEL, 0x6, 0xA, 0xA, ANY, 82}, /* Pentium III Xeon */
+ {X86_VENDOR_INTEL, 0x6, 0xB, 0xB, ANY, 85}, /* Tualatin */
+ {X86_VENDOR_INTEL, 0x6, 0xD, 0xD, ANY, 13}, /* Pentium M (90 nm) */
+ {X86_VENDOR_INTEL, 0x6, 0xE, 0xE, ANY, 14}, /* Intel Core (65 nm) */
+ {X86_VENDOR_INTEL, 0x6, 0xF, ANY, ANY, 110}, /* Intel Conroe and
+ * later */
+ {X86_VENDOR_INTEL, 0xF, 0x0, 0x0, ANY, 90}, /* P4 */
+ {X86_VENDOR_INTEL, 0xF, 0x1, 0x1, ANY, 90}, /* P4 Willamette */
+ {X86_VENDOR_INTEL, 0xF, 0x2, 0x2, ANY, 90}, /* P4 Northwood */
+ {X86_VENDOR_INTEL, 0xF, 0x3, ANY, ANY, 100}, /* Prescott and above
+ * assume VRD 10 */
+
+ {X86_VENDOR_CENTAUR, 0x6, 0x7, 0x7, ANY, 85}, /* Eden ESP/Ezra */
+ {X86_VENDOR_CENTAUR, 0x6, 0x8, 0x8, 0x7, 85}, /* Ezra T */
+ {X86_VENDOR_CENTAUR, 0x6, 0x9, 0x9, 0x7, 85}, /* Nehemiah */
+ {X86_VENDOR_CENTAUR, 0x6, 0x9, 0x9, ANY, 17}, /* C3-M, Eden-N */
+ {X86_VENDOR_CENTAUR, 0x6, 0xA, 0xA, 0x7, 0}, /* No information */
+ {X86_VENDOR_CENTAUR, 0x6, 0xA, 0xA, ANY, 13}, /* C7-M, C7,
+ * Eden (Esther) */
+ {X86_VENDOR_CENTAUR, 0x6, 0xD, 0xD, ANY, 134}, /* C7-D, C7-M, C7,
+ * Eden (Esther) */
};
/*
}
}
-static u8 find_vrm(u8 eff_family, u8 eff_model, u8 eff_stepping, u8 vendor)
+static u8 find_vrm(u8 family, u8 model, u8 stepping, u8 vendor)
{
- int i = 0;
-
- while (vrm_models[i].vendor!=X86_VENDOR_UNKNOWN) {
- 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 >= 0x10 &&
- eff_model <= vrm_models[i].eff_model) ||
- (vrm_models[i].eff_model==ANY)) &&
- (eff_stepping <= vrm_models[i].eff_stepping))
- return vrm_models[i].vrm_type;
- i++;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(vrm_models); i++) {
+ if (vendor == vrm_models[i].vendor &&
+ family == vrm_models[i].family &&
+ model >= vrm_models[i].model_from &&
+ model <= vrm_models[i].model_to &&
+ stepping <= vrm_models[i].stepping_to)
+ return vrm_models[i].vrm_type;
}
return 0;
u8 vid_which_vrm(void)
{
struct cpuinfo_x86 *c = &cpu_data(0);
- u32 eax;
- u8 eff_family, eff_model, eff_stepping, vrm_ret;
+ u8 vrm_ret;
if (c->x86 < 6) /* Any CPU with family lower than 6 */
- return 0; /* doesn't have VID and/or CPUID */
-
- 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, eff_stepping, c->x86_vendor);
+ return 0; /* doesn't have VID */
+
+ vrm_ret = find_vrm(c->x86, c->x86_model, c->x86_mask, c->x86_vendor);
if (vrm_ret == 134)
vrm_ret = get_via_model_d_vrm();
if (vrm_ret == 0)
return 0;
}
#endif
-
-EXPORT_SYMBOL(vid_from_reg);
EXPORT_SYMBOL(vid_which_vrm);
MODULE_AUTHOR("Rudolf Marek <r.marek@assembler.cz>");
projects / cascardo / linux.git / blobdiff