Line data    Source code

       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           0 : km_match(struct device *parent, void *match, void *aux)
      82             : {
      83             :         /* successful match supersedes pchb(4) */
      84           0 :         return pci_matchbyid((struct pci_attach_args *)aux, km_devices,
      85           0 :             sizeof(km_devices) / sizeof(km_devices[0])) * 2;
      86             : }
      87             : 
      88             : void
      89           0 : km_attach(struct device *parent, struct device *self, void *aux)
      90             : {
      91           0 :         struct km_softc         *sc = (struct km_softc *)self;
      92           0 :         struct pci_attach_args  *pa = aux;
      93             : 
      94           0 :         sc->sc_pc = pa->pa_pc;
      95           0 :         sc->sc_pcitag = pa->pa_tag;
      96             : 
      97           0 :         strlcpy(sc->sc_sensordev.xname, sc->sc_dev.dv_xname,
      98             :             sizeof(sc->sc_sensordev.xname));
      99             : 
     100           0 :         sc->sc_sensor.type = SENSOR_TEMP;
     101           0 :         sensor_attach(&sc->sc_sensordev, &sc->sc_sensor);
     102             : 
     103           0 :         if (sensor_task_register(sc, km_refresh, 5) == NULL) {
     104           0 :                 printf(": unable to register update task\n");
     105           0 :                 return;
     106             :         }
     107             : 
     108           0 :         sensordev_install(&sc->sc_sensordev);
     109             : 
     110           0 :         printf("\n");
     111           0 : }
     112             : 
     113             : void
     114           0 : km_refresh(void *arg)
     115             : {
     116           0 :         struct km_softc *sc = arg;
     117           0 :         struct ksensor  *s = &sc->sc_sensor;
     118             :         pcireg_t        r;
     119             :         int             c;
     120             : 
     121           0 :         r = pci_conf_read(sc->sc_pc, sc->sc_pcitag, KM_REP_TEMP_CONTR_R);
     122           0 :         c = KM_GET_CURTMP(r);
     123           0 :         s->value = c * 125000 + 273150000;
     124           0 : }