1/* $OpenBSD: km.c,v 1.14 2022/03/11 18:00:50 mpi Exp $ */ 2 3/* 4 * Copyright (c) 2008 Constantine A. Murenin <cnst+openbsd@bugmail.mojo.ru> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19#include <sys/param.h> 20#include <sys/systm.h> 21#include <sys/device.h> 22#include <sys/sensors.h> 23 24#include <machine/bus.h> 25 26#include <dev/pci/pcivar.h> 27#include <dev/pci/pcidevs.h> 28 29 30/* 31 * AMD Family > 10h Processors, Function 3 -- Miscellaneous Control 32 */ 33 34/* Function 3 Registers */ 35#define KM_REP_TEMP_CONTR_R 0xa4 36#define KM_THERMTRIP_STAT_R 0xe4 37#define KM_NORTHBRIDGE_CAP_R 0xe8 38#define KM_CPUID_FAMILY_MODEL_R 0xfc 39 40/* Operations on Reported Temperature Control Register */ 41#define KM_GET_CURTMP(r) (((r) >> 21) & 0x7ff) 42 43/* Operations on Thermtrip Status Register */ 44#define KM_GET_DIODEOFFSET(r) (((r) >> 8) & 0x7f) 45 46 47struct km_softc { 48 struct device sc_dev; 49 50 pci_chipset_tag_t sc_pc; 51 pcitag_t sc_pcitag; 52 53 struct ksensor sc_sensor; 54 struct ksensordev sc_sensordev; 55}; 56 57int km_match(struct device *, void *, void *); 58void km_attach(struct device *, struct device *, void *); 59void km_refresh(void *); 60 61const struct cfattach km_ca = { 62 sizeof(struct km_softc), km_match, km_attach 63}; 64 65struct cfdriver km_cd = { 66 NULL, "km", DV_DULL 67}; 68 69static const struct pci_matchid km_devices[] = { 70 { PCI_VENDOR_AMD, PCI_PRODUCT_AMD_10_MISC }, 71 { PCI_VENDOR_AMD, PCI_PRODUCT_AMD_11_MISC }, 72 { PCI_VENDOR_AMD, PCI_PRODUCT_AMD_14_MISC }, 73 { PCI_VENDOR_AMD, PCI_PRODUCT_AMD_15_0X_MISC }, 74 { PCI_VENDOR_AMD, PCI_PRODUCT_AMD_15_1X_MISC }, 75 { PCI_VENDOR_AMD, PCI_PRODUCT_AMD_16_MISC }, 76 { PCI_VENDOR_AMD, PCI_PRODUCT_AMD_16_3X_MISC } 77}; 78 79 80int 81km_match(struct device *parent, void *match, void *aux) 82{ 83 /* successful match supersedes pchb(4) */ 84 return pci_matchbyid((struct pci_attach_args *)aux, km_devices, 85 sizeof(km_devices) / sizeof(km_devices[0])) * 2; 86} 87 88void 89km_attach(struct device *parent, struct device *self, void *aux) 90{ 91 struct km_softc *sc = (struct km_softc *)self; 92 struct pci_attach_args *pa = aux; 93 94 sc->sc_pc = pa->pa_pc; 95 sc->sc_pcitag = pa->pa_tag; 96 97 strlcpy(sc->sc_sensordev.xname, sc->sc_dev.dv_xname, 98 sizeof(sc->sc_sensordev.xname)); 99 100 sc->sc_sensor.type = SENSOR_TEMP; 101 sensor_attach(&sc->sc_sensordev, &sc->sc_sensor); 102 103 if (sensor_task_register(sc, km_refresh, 5) == NULL) { 104 printf(": unable to register update task\n"); 105 return; 106 } 107 108 sensordev_install(&sc->sc_sensordev); 109 110 printf("\n"); 111} 112 113void 114km_refresh(void *arg) 115{ 116 struct km_softc *sc = arg; 117 struct ksensor *s = &sc->sc_sensor; 118 pcireg_t r; 119 int c; 120 121 r = pci_conf_read(sc->sc_pc, sc->sc_pcitag, KM_REP_TEMP_CONTR_R); 122 c = KM_GET_CURTMP(r); 123 s->value = c * 125000 + 273150000; 124} 125