129fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek/* 229fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek * k8temp.c - Linux kernel module for hardware monitoring 329fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek * 47188cc66b4facf749e4fc0a44165b06716e1b621Jean Delvare * Copyright (C) 2006 Rudolf Marek <r.marek@assembler.cz> 529fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek * 629fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek * Inspired from the w83785 and amd756 drivers. 729fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek * 829fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek * This program is free software; you can redistribute it and/or modify 929fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek * it under the terms of the GNU General Public License as published by 1029fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek * the Free Software Foundation; either version 2 of the License, or 1129fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek * (at your option) any later version. 1229fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek * 1329fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek * This program is distributed in the hope that it will be useful, 1429fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek * but WITHOUT ANY WARRANTY; without even the implied warranty of 1529fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 1629fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek * GNU General Public License for more details. 1729fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek * 1829fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek * You should have received a copy of the GNU General Public License 1929fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek * along with this program; if not, write to the Free Software 2029fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 2129fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek * 02110-1301 USA. 2229fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek */ 2329fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek 2429fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek#include <linux/module.h> 2529fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek#include <linux/init.h> 2629fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek#include <linux/slab.h> 2729fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek#include <linux/jiffies.h> 2829fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek#include <linux/pci.h> 2929fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek#include <linux/hwmon.h> 3029fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek#include <linux/hwmon-sysfs.h> 3129fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek#include <linux/err.h> 3229fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek#include <linux/mutex.h> 33bb9a35f293a3c8b5d57253cdfe2f29fa2627e1b9Andreas Herrmann#include <asm/processor.h> 3429fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek 3529fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek#define TEMP_FROM_REG(val) (((((val) >> 16) & 0xff) - 49) * 1000) 3629fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek#define REG_TEMP 0xe4 3729fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek#define SEL_PLACE 0x40 3829fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek#define SEL_CORE 0x04 3929fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek 4029fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marekstruct k8temp_data { 411beeffe43311f64df8dd0ab08ff6b1858c58363fTony Jones struct device *hwmon_dev; 4229fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek struct mutex update_lock; 4329fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek const char *name; 4429fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek char valid; /* zero until following fields are valid */ 4529fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek unsigned long last_updated; /* in jiffies */ 4629fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek 4729fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek /* registers values */ 4893092a644fb519ec520c3a1f3e05ef9d25b1dac4Frans Meulenbroeks u8 sensorsp; /* sensor presence bits - SEL_CORE, SEL_PLACE */ 4929fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek u32 temp[2][2]; /* core, place */ 50a2e066bba2aad6583e3ff648bf28339d6c9f0898Andreas Herrmann u8 swap_core_select; /* meaning of SEL_CORE is inverted */ 5176ff08da34196cfa308fcd3552bb9ea20888e745Andreas Herrmann u32 temp_offset; 5229fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek}; 5329fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek 5429fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marekstatic struct k8temp_data *k8temp_update_device(struct device *dev) 5529fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek{ 5629fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek struct k8temp_data *data = dev_get_drvdata(dev); 5729fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek struct pci_dev *pdev = to_pci_dev(dev); 5829fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek u8 tmp; 5929fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek 6029fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek mutex_lock(&data->update_lock); 6129fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek 6229fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek if (!data->valid 6329fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek || time_after(jiffies, data->last_updated + HZ)) { 6429fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek pci_read_config_byte(pdev, REG_TEMP, &tmp); 6593092a644fb519ec520c3a1f3e05ef9d25b1dac4Frans Meulenbroeks tmp &= ~(SEL_PLACE | SEL_CORE); /* Select sensor 0, core0 */ 6629fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek pci_write_config_byte(pdev, REG_TEMP, tmp); 6729fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek pci_read_config_dword(pdev, REG_TEMP, &data->temp[0][0]); 6829fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek 6929fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek if (data->sensorsp & SEL_PLACE) { 7029fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek tmp |= SEL_PLACE; /* Select sensor 1, core0 */ 7129fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek pci_write_config_byte(pdev, REG_TEMP, tmp); 7229fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek pci_read_config_dword(pdev, REG_TEMP, 7329fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek &data->temp[0][1]); 7429fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek } 7529fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek 7629fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek if (data->sensorsp & SEL_CORE) { 7729fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek tmp &= ~SEL_PLACE; /* Select sensor 0, core1 */ 7829fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek tmp |= SEL_CORE; 7929fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek pci_write_config_byte(pdev, REG_TEMP, tmp); 8029fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek pci_read_config_dword(pdev, REG_TEMP, 8129fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek &data->temp[1][0]); 8229fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek 8329fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek if (data->sensorsp & SEL_PLACE) { 8493092a644fb519ec520c3a1f3e05ef9d25b1dac4Frans Meulenbroeks tmp |= SEL_PLACE; /* Select sensor 1, core1 */ 8529fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek pci_write_config_byte(pdev, REG_TEMP, tmp); 8629fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek pci_read_config_dword(pdev, REG_TEMP, 8729fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek &data->temp[1][1]); 8829fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek } 8929fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek } 9029fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek 9129fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek data->last_updated = jiffies; 9229fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek data->valid = 1; 9329fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek } 9429fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek 9529fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek mutex_unlock(&data->update_lock); 9629fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek return data; 9729fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek} 9829fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek 9929fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek/* 10029fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek * Sysfs stuff 10129fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek */ 10229fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek 10329fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marekstatic ssize_t show_name(struct device *dev, struct device_attribute 10429fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek *devattr, char *buf) 10529fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek{ 10629fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek struct k8temp_data *data = dev_get_drvdata(dev); 10729fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek 10829fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek return sprintf(buf, "%s\n", data->name); 10929fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek} 11029fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek 11129fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek 11229fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marekstatic ssize_t show_temp(struct device *dev, 11329fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek struct device_attribute *devattr, char *buf) 11429fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek{ 11529fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek struct sensor_device_attribute_2 *attr = 11629fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek to_sensor_dev_attr_2(devattr); 11729fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek int core = attr->nr; 11829fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek int place = attr->index; 11976ff08da34196cfa308fcd3552bb9ea20888e745Andreas Herrmann int temp; 12029fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek struct k8temp_data *data = k8temp_update_device(dev); 12129fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek 122cd4de21f7e65a8cd04860f5661b3c18648ee52a1Jean Delvare if (data->swap_core_select && (data->sensorsp & SEL_CORE)) 123a2e066bba2aad6583e3ff648bf28339d6c9f0898Andreas Herrmann core = core ? 0 : 1; 124a2e066bba2aad6583e3ff648bf28339d6c9f0898Andreas Herrmann 12576ff08da34196cfa308fcd3552bb9ea20888e745Andreas Herrmann temp = TEMP_FROM_REG(data->temp[core][place]) + data->temp_offset; 12676ff08da34196cfa308fcd3552bb9ea20888e745Andreas Herrmann 12776ff08da34196cfa308fcd3552bb9ea20888e745Andreas Herrmann return sprintf(buf, "%d\n", temp); 12829fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek} 12929fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek 13029fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek/* core, place */ 13129fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek 13229fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marekstatic SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, 0, 0); 13329fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marekstatic SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, 0, 1); 13429fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marekstatic SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, 1, 0); 13529fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marekstatic SENSOR_DEVICE_ATTR_2(temp4_input, S_IRUGO, show_temp, NULL, 1, 1); 13629fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marekstatic DEVICE_ATTR(name, S_IRUGO, show_name, NULL); 13729fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek 138cd9bb0564c551f8a72763dd45590e9ea6787811eJingoo Hanstatic const struct pci_device_id k8temp_ids[] = { 13929fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_K8_NB_MISC) }, 14029fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek { 0 }, 14129fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek}; 14229fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek 143b17ebc9402040959690b5a2c4e1cfb1e6d4fb206Jean DelvareMODULE_DEVICE_TABLE(pci, k8temp_ids); 144b17ebc9402040959690b5a2c4e1cfb1e6d4fb206Jean Delvare 1456c931ae1c09a9618852c9619dac71f1f77776e3bBill Pembertonstatic int is_rev_g_desktop(u8 model) 146a05e93f3b3fc2f53c1d0de3b17019e207c482349Andreas Herrmann{ 147a05e93f3b3fc2f53c1d0de3b17019e207c482349Andreas Herrmann u32 brandidx; 148a05e93f3b3fc2f53c1d0de3b17019e207c482349Andreas Herrmann 149a05e93f3b3fc2f53c1d0de3b17019e207c482349Andreas Herrmann if (model < 0x69) 150a05e93f3b3fc2f53c1d0de3b17019e207c482349Andreas Herrmann return 0; 151a05e93f3b3fc2f53c1d0de3b17019e207c482349Andreas Herrmann 152a05e93f3b3fc2f53c1d0de3b17019e207c482349Andreas Herrmann if (model == 0xc1 || model == 0x6c || model == 0x7c) 153a05e93f3b3fc2f53c1d0de3b17019e207c482349Andreas Herrmann return 0; 154a05e93f3b3fc2f53c1d0de3b17019e207c482349Andreas Herrmann 155a05e93f3b3fc2f53c1d0de3b17019e207c482349Andreas Herrmann /* 156a05e93f3b3fc2f53c1d0de3b17019e207c482349Andreas Herrmann * Differentiate between AM2 and ASB1. 157a05e93f3b3fc2f53c1d0de3b17019e207c482349Andreas Herrmann * See "Constructing the processor Name String" in "Revision 158a05e93f3b3fc2f53c1d0de3b17019e207c482349Andreas Herrmann * Guide for AMD NPT Family 0Fh Processors" (33610). 159a05e93f3b3fc2f53c1d0de3b17019e207c482349Andreas Herrmann */ 160a05e93f3b3fc2f53c1d0de3b17019e207c482349Andreas Herrmann brandidx = cpuid_ebx(0x80000001); 161a05e93f3b3fc2f53c1d0de3b17019e207c482349Andreas Herrmann brandidx = (brandidx >> 9) & 0x1f; 162a05e93f3b3fc2f53c1d0de3b17019e207c482349Andreas Herrmann 163a05e93f3b3fc2f53c1d0de3b17019e207c482349Andreas Herrmann /* Single core */ 164a05e93f3b3fc2f53c1d0de3b17019e207c482349Andreas Herrmann if ((model == 0x6f || model == 0x7f) && 165a05e93f3b3fc2f53c1d0de3b17019e207c482349Andreas Herrmann (brandidx == 0x7 || brandidx == 0x9 || brandidx == 0xc)) 166a05e93f3b3fc2f53c1d0de3b17019e207c482349Andreas Herrmann return 0; 167a05e93f3b3fc2f53c1d0de3b17019e207c482349Andreas Herrmann 168a05e93f3b3fc2f53c1d0de3b17019e207c482349Andreas Herrmann /* Dual core */ 169a05e93f3b3fc2f53c1d0de3b17019e207c482349Andreas Herrmann if (model == 0x6b && 170a05e93f3b3fc2f53c1d0de3b17019e207c482349Andreas Herrmann (brandidx == 0xb || brandidx == 0xc)) 171a05e93f3b3fc2f53c1d0de3b17019e207c482349Andreas Herrmann return 0; 172a05e93f3b3fc2f53c1d0de3b17019e207c482349Andreas Herrmann 173a05e93f3b3fc2f53c1d0de3b17019e207c482349Andreas Herrmann return 1; 174a05e93f3b3fc2f53c1d0de3b17019e207c482349Andreas Herrmann} 175a05e93f3b3fc2f53c1d0de3b17019e207c482349Andreas Herrmann 1766c931ae1c09a9618852c9619dac71f1f77776e3bBill Pembertonstatic int k8temp_probe(struct pci_dev *pdev, 17729fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek const struct pci_device_id *id) 17829fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek{ 17929fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek int err; 18029fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek u8 scfg; 18129fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek u32 temp; 182bb9a35f293a3c8b5d57253cdfe2f29fa2627e1b9Andreas Herrmann u8 model, stepping; 18329fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek struct k8temp_data *data; 18429fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek 185a0d44cbcc0b92d1dbec5dda3a5b7ea929c05d522Guenter Roeck data = devm_kzalloc(&pdev->dev, sizeof(struct k8temp_data), GFP_KERNEL); 186a0d44cbcc0b92d1dbec5dda3a5b7ea929c05d522Guenter Roeck if (!data) 187a0d44cbcc0b92d1dbec5dda3a5b7ea929c05d522Guenter Roeck return -ENOMEM; 18829fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek 189bb9a35f293a3c8b5d57253cdfe2f29fa2627e1b9Andreas Herrmann model = boot_cpu_data.x86_model; 190bb9a35f293a3c8b5d57253cdfe2f29fa2627e1b9Andreas Herrmann stepping = boot_cpu_data.x86_mask; 191bb9a35f293a3c8b5d57253cdfe2f29fa2627e1b9Andreas Herrmann 192628b4504cf69fbe262b41c16a4a3fd61b091d61cAndreas Herrmann /* feature available since SH-C0, exclude older revisions */ 193a0d44cbcc0b92d1dbec5dda3a5b7ea929c05d522Guenter Roeck if ((model == 4 && stepping == 0) || 194a0d44cbcc0b92d1dbec5dda3a5b7ea929c05d522Guenter Roeck (model == 5 && stepping <= 1)) 195a0d44cbcc0b92d1dbec5dda3a5b7ea929c05d522Guenter Roeck return -ENODEV; 19676ff08da34196cfa308fcd3552bb9ea20888e745Andreas Herrmann 197628b4504cf69fbe262b41c16a4a3fd61b091d61cAndreas Herrmann /* 198628b4504cf69fbe262b41c16a4a3fd61b091d61cAndreas Herrmann * AMD NPT family 0fh, i.e. RevF and RevG: 199628b4504cf69fbe262b41c16a4a3fd61b091d61cAndreas Herrmann * meaning of SEL_CORE bit is inverted 200628b4504cf69fbe262b41c16a4a3fd61b091d61cAndreas Herrmann */ 201628b4504cf69fbe262b41c16a4a3fd61b091d61cAndreas Herrmann if (model >= 0x40) { 202628b4504cf69fbe262b41c16a4a3fd61b091d61cAndreas Herrmann data->swap_core_select = 1; 203b55f375725ff85aada394da488802b0a3cc99e88Guenter Roeck dev_warn(&pdev->dev, 204b55f375725ff85aada394da488802b0a3cc99e88Guenter Roeck "Temperature readouts might be wrong - check erratum #141\n"); 205bb9a35f293a3c8b5d57253cdfe2f29fa2627e1b9Andreas Herrmann } 206bb9a35f293a3c8b5d57253cdfe2f29fa2627e1b9Andreas Herrmann 207628b4504cf69fbe262b41c16a4a3fd61b091d61cAndreas Herrmann /* 208628b4504cf69fbe262b41c16a4a3fd61b091d61cAndreas Herrmann * RevG desktop CPUs (i.e. no socket S1G1 or ASB1 parts) need 209628b4504cf69fbe262b41c16a4a3fd61b091d61cAndreas Herrmann * additional offset, otherwise reported temperature is below 210628b4504cf69fbe262b41c16a4a3fd61b091d61cAndreas Herrmann * ambient temperature 211628b4504cf69fbe262b41c16a4a3fd61b091d61cAndreas Herrmann */ 212628b4504cf69fbe262b41c16a4a3fd61b091d61cAndreas Herrmann if (is_rev_g_desktop(model)) 213628b4504cf69fbe262b41c16a4a3fd61b091d61cAndreas Herrmann data->temp_offset = 21000; 214628b4504cf69fbe262b41c16a4a3fd61b091d61cAndreas Herrmann 21529fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek pci_read_config_byte(pdev, REG_TEMP, &scfg); 21693092a644fb519ec520c3a1f3e05ef9d25b1dac4Frans Meulenbroeks scfg &= ~(SEL_PLACE | SEL_CORE); /* Select sensor 0, core0 */ 21729fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek pci_write_config_byte(pdev, REG_TEMP, scfg); 21829fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek pci_read_config_byte(pdev, REG_TEMP, &scfg); 21929fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek 22029fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek if (scfg & (SEL_PLACE | SEL_CORE)) { 22129fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek dev_err(&pdev->dev, "Configuration bit(s) stuck at 1!\n"); 222a0d44cbcc0b92d1dbec5dda3a5b7ea929c05d522Guenter Roeck return -ENODEV; 22329fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek } 22429fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek 22529fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek scfg |= (SEL_PLACE | SEL_CORE); 22629fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek pci_write_config_byte(pdev, REG_TEMP, scfg); 22729fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek 22829fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek /* now we know if we can change core and/or sensor */ 22929fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek pci_read_config_byte(pdev, REG_TEMP, &data->sensorsp); 23029fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek 23129fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek if (data->sensorsp & SEL_PLACE) { 23229fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek scfg &= ~SEL_CORE; /* Select sensor 1, core0 */ 23329fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek pci_write_config_byte(pdev, REG_TEMP, scfg); 23429fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek pci_read_config_dword(pdev, REG_TEMP, &temp); 23529fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek scfg |= SEL_CORE; /* prepare for next selection */ 23693092a644fb519ec520c3a1f3e05ef9d25b1dac4Frans Meulenbroeks if (!((temp >> 16) & 0xff)) /* if temp is 0 -49C is unlikely */ 23729fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek data->sensorsp &= ~SEL_PLACE; 23829fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek } 23929fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek 24029fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek if (data->sensorsp & SEL_CORE) { 24129fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek scfg &= ~SEL_PLACE; /* Select sensor 0, core1 */ 24229fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek pci_write_config_byte(pdev, REG_TEMP, scfg); 24329fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek pci_read_config_dword(pdev, REG_TEMP, &temp); 24493092a644fb519ec520c3a1f3e05ef9d25b1dac4Frans Meulenbroeks if (!((temp >> 16) & 0xff)) /* if temp is 0 -49C is unlikely */ 24529fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek data->sensorsp &= ~SEL_CORE; 24629fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek } 24729fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek 24829fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek data->name = "k8temp"; 24929fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek mutex_init(&data->update_lock); 25095de3b257516d21af6e0313c7bab119e4f80d6f4Jean Delvare pci_set_drvdata(pdev, data); 25129fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek 25229fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek /* Register sysfs hooks */ 25329fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek err = device_create_file(&pdev->dev, 25429fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek &sensor_dev_attr_temp1_input.dev_attr); 25529fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek if (err) 25629fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek goto exit_remove; 25729fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek 25829fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek /* sensor can be changed and reports something */ 25929fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek if (data->sensorsp & SEL_PLACE) { 26029fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek err = device_create_file(&pdev->dev, 26129fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek &sensor_dev_attr_temp2_input.dev_attr); 26229fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek if (err) 26329fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek goto exit_remove; 26429fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek } 26529fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek 26629fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek /* core can be changed and reports something */ 26729fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek if (data->sensorsp & SEL_CORE) { 26829fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek err = device_create_file(&pdev->dev, 26929fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek &sensor_dev_attr_temp3_input.dev_attr); 27029fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek if (err) 27129fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek goto exit_remove; 272df149d02ea8ee49cd14c6609cc7ef980d62dce80Julia Lawall if (data->sensorsp & SEL_PLACE) { 27329fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek err = device_create_file(&pdev->dev, 27429fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek &sensor_dev_attr_temp4_input. 27529fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek dev_attr); 27629fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek if (err) 27729fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek goto exit_remove; 278df149d02ea8ee49cd14c6609cc7ef980d62dce80Julia Lawall } 27929fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek } 28029fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek 28129fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek err = device_create_file(&pdev->dev, &dev_attr_name); 28229fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek if (err) 28329fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek goto exit_remove; 28429fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek 2851beeffe43311f64df8dd0ab08ff6b1858c58363fTony Jones data->hwmon_dev = hwmon_device_register(&pdev->dev); 28629fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek 2871beeffe43311f64df8dd0ab08ff6b1858c58363fTony Jones if (IS_ERR(data->hwmon_dev)) { 2881beeffe43311f64df8dd0ab08ff6b1858c58363fTony Jones err = PTR_ERR(data->hwmon_dev); 28929fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek goto exit_remove; 29029fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek } 29129fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek 29229fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek return 0; 29329fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek 29429fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marekexit_remove: 29529fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek device_remove_file(&pdev->dev, 29629fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek &sensor_dev_attr_temp1_input.dev_attr); 29729fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek device_remove_file(&pdev->dev, 29829fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek &sensor_dev_attr_temp2_input.dev_attr); 29929fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek device_remove_file(&pdev->dev, 30029fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek &sensor_dev_attr_temp3_input.dev_attr); 30129fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek device_remove_file(&pdev->dev, 30229fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek &sensor_dev_attr_temp4_input.dev_attr); 30329fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek device_remove_file(&pdev->dev, &dev_attr_name); 30429fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek return err; 30529fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek} 30629fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek 307281dfd0b6ed5403f5b9b1669f2a37a4f8cfc11c1Bill Pembertonstatic void k8temp_remove(struct pci_dev *pdev) 30829fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek{ 30995de3b257516d21af6e0313c7bab119e4f80d6f4Jean Delvare struct k8temp_data *data = pci_get_drvdata(pdev); 31029fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek 3111beeffe43311f64df8dd0ab08ff6b1858c58363fTony Jones hwmon_device_unregister(data->hwmon_dev); 31229fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek device_remove_file(&pdev->dev, 31329fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek &sensor_dev_attr_temp1_input.dev_attr); 31429fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek device_remove_file(&pdev->dev, 31529fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek &sensor_dev_attr_temp2_input.dev_attr); 31629fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek device_remove_file(&pdev->dev, 31729fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek &sensor_dev_attr_temp3_input.dev_attr); 31829fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek device_remove_file(&pdev->dev, 31929fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek &sensor_dev_attr_temp4_input.dev_attr); 32029fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek device_remove_file(&pdev->dev, &dev_attr_name); 32129fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek} 32229fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek 32329fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marekstatic struct pci_driver k8temp_driver = { 32429fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek .name = "k8temp", 32529fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek .id_table = k8temp_ids, 32629fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek .probe = k8temp_probe, 3279e5e9b7a92e4e2e4ac1f0d6aa181639637660e45Bill Pemberton .remove = k8temp_remove, 32829fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek}; 32929fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek 330f71f5a550a43a81943efbe0032190ec381006b53Axel Linmodule_pci_driver(k8temp_driver); 33129fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf Marek 3327188cc66b4facf749e4fc0a44165b06716e1b621Jean DelvareMODULE_AUTHOR("Rudolf Marek <r.marek@assembler.cz>"); 33329fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf MarekMODULE_DESCRIPTION("AMD K8 core temperature monitor"); 33429fa06c1292f473ae51a84f55c8fe22179bc1080Rudolf MarekMODULE_LICENSE("GPL"); 335