forked from Minki/linux
99 lines
2.8 KiB
C
99 lines
2.8 KiB
C
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/*
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i2c-sensor-vid.c - Part of lm_sensors, Linux kernel modules for hardware
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monitoring
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Copyright (c) 2004 Rudolf Marek <r.marek@sh.cvut.cz>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <linux/config.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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struct vrm_model {
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u8 vendor;
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u8 eff_family;
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u8 eff_model;
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int vrm_type;
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};
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#define ANY 0xFF
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#ifdef CONFIG_X86
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static struct vrm_model vrm_models[] = {
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{X86_VENDOR_AMD, 0x6, ANY, 90}, /* Athlon Duron etc */
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{X86_VENDOR_AMD, 0xF, ANY, 24}, /* Athlon 64, Opteron */
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{X86_VENDOR_INTEL, 0x6, 0x9, 85}, /* 0.13um too */
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{X86_VENDOR_INTEL, 0x6, 0xB, 85}, /* 0xB Tualatin */
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{X86_VENDOR_INTEL, 0x6, ANY, 82}, /* any P6 */
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{X86_VENDOR_INTEL, 0x7, ANY, 0}, /* Itanium */
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{X86_VENDOR_INTEL, 0xF, 0x3, 100}, /* P4 Prescott */
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{X86_VENDOR_INTEL, 0xF, ANY, 90}, /* P4 before Prescott */
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{X86_VENDOR_INTEL, 0x10,ANY, 0}, /* Itanium 2 */
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{X86_VENDOR_UNKNOWN, ANY, ANY, 0} /* stop here */
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};
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static int find_vrm(u8 eff_family, u8 eff_model, u8 vendor)
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{
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int i = 0;
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while (vrm_models[i].vendor!=X86_VENDOR_UNKNOWN) {
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if (vrm_models[i].vendor==vendor)
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if ((vrm_models[i].eff_family==eff_family)&& \
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((vrm_models[i].eff_model==eff_model)|| \
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(vrm_models[i].eff_model==ANY)))
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return vrm_models[i].vrm_type;
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i++;
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}
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return 0;
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}
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int i2c_which_vrm(void)
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{
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struct cpuinfo_x86 *c = cpu_data;
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u32 eax;
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u8 eff_family, eff_model;
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int vrm_ret;
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if (c->x86 < 6) return 0; /* any CPU with familly lower than 6
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dont have VID and/or CPUID */
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eax = cpuid_eax(1);
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eff_family = ((eax & 0x00000F00)>>8);
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eff_model = ((eax & 0x000000F0)>>4);
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if (eff_family == 0xF) { /* use extended model & family */
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eff_family += ((eax & 0x00F00000)>>20);
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eff_model += ((eax & 0x000F0000)>>16)<<4;
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}
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vrm_ret = find_vrm(eff_family,eff_model,c->x86_vendor);
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if (vrm_ret == 0)
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printk(KERN_INFO "i2c-sensor.o: Unknown VRM version of your"
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" x86 CPU\n");
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return vrm_ret;
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}
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/* and now for something completely different for Non-x86 world*/
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#else
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int i2c_which_vrm(void)
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{
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printk(KERN_INFO "i2c-sensor.o: Unknown VRM version of your CPU\n");
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return 0;
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}
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#endif
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EXPORT_SYMBOL(i2c_which_vrm);
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