1 /* $OpenBSD: km.c,v 1.11 2015/11/04 19:39:30 sthen 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 47 struct 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 57 int km_match(struct device *, void *, void *); 58 void km_attach(struct device *, struct device *, void *); 59 void km_refresh(void *); 60 61 struct cfattach km_ca = { 62 sizeof(struct km_softc), km_match, km_attach 63 }; 64 65 struct cfdriver km_cd = { 66 NULL, "km", DV_DULL 67 }; 68 69 static const struct pci_matchid km_devices[] = { 70 { PCI_VENDOR_AMD, PCI_PRODUCT_AMD_AMD64_10_MISC }, 71 { PCI_VENDOR_AMD, PCI_PRODUCT_AMD_AMD64_11_MISC }, 72 { PCI_VENDOR_AMD, PCI_PRODUCT_AMD_AMD64_14_MISC }, 73 { PCI_VENDOR_AMD, PCI_PRODUCT_AMD_AMD64_15_0x_MISC }, 74 { PCI_VENDOR_AMD, PCI_PRODUCT_AMD_AMD64_15_1x_MISC }, 75 { PCI_VENDOR_AMD, PCI_PRODUCT_AMD_AMD64_16_MISC }, 76 { PCI_VENDOR_AMD, PCI_PRODUCT_AMD_AMD64_16_3X_MISC } 77 }; 78 79 80 int 81 km_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 88 void 89 km_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 } 112 113 void 114 km_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