239 lines
7.2 KiB
C
239 lines
7.2 KiB
C
/* $NetBSD: amdpm.c,v 1.34 2010/02/07 20:55:46 pgoyette Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 2002 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Enami Tsugutomo.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
|
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
|
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
|
|
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: amdpm.c,v 1.34 2010/02/07 20:55:46 pgoyette Exp $");
|
|
|
|
#include "opt_amdpm.h"
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/device.h>
|
|
#include <sys/callout.h>
|
|
#include <sys/rnd.h>
|
|
|
|
#include <sys/bus.h>
|
|
#include <dev/ic/acpipmtimer.h>
|
|
|
|
#include <dev/i2c/i2cvar.h>
|
|
|
|
#include <dev/pci/pcivar.h>
|
|
#include <dev/pci/pcireg.h>
|
|
#include <dev/pci/pcidevs.h>
|
|
|
|
#include <dev/pci/amdpmreg.h>
|
|
#include <dev/pci/amdpmvar.h>
|
|
#include <dev/pci/amdpm_smbusreg.h>
|
|
|
|
static void amdpm_rnd_callout(void *);
|
|
|
|
#ifdef AMDPM_RND_COUNTERS
|
|
#define AMDPM_RNDCNT_INCR(ev) (ev)->ev_count++
|
|
#endif
|
|
|
|
static int
|
|
amdpm_match(device_t parent, cfdata_t match, void *aux)
|
|
{
|
|
struct pci_attach_args *pa = aux;
|
|
|
|
if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_AMD) {
|
|
switch (PCI_PRODUCT(pa->pa_id)) {
|
|
case PCI_PRODUCT_AMD_PBC768_PMC:
|
|
case PCI_PRODUCT_AMD_PBC8111_ACPI:
|
|
return (1);
|
|
}
|
|
}
|
|
if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_NVIDIA) {
|
|
switch (PCI_PRODUCT(pa->pa_id)) {
|
|
case PCI_PRODUCT_NVIDIA_XBOX_SMBUS:
|
|
return (1);
|
|
}
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
amdpm_attach(device_t parent, device_t self, void *aux)
|
|
{
|
|
struct amdpm_softc *sc = device_private(self);
|
|
struct pci_attach_args *pa = aux;
|
|
char devinfo[256];
|
|
pcireg_t confreg, pmptrreg;
|
|
u_int32_t pmreg;
|
|
int i;
|
|
|
|
aprint_naive("\n");
|
|
pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo));
|
|
aprint_normal(": %s (rev. 0x%02x)\n", devinfo,
|
|
PCI_REVISION(pa->pa_class));
|
|
|
|
if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_NVIDIA_XBOX_SMBUS)
|
|
sc->sc_nforce = 1;
|
|
else
|
|
sc->sc_nforce = 0;
|
|
|
|
sc->sc_pc = pa->pa_pc;
|
|
sc->sc_tag = pa->pa_tag;
|
|
sc->sc_iot = pa->pa_iot;
|
|
sc->sc_pa = pa;
|
|
|
|
#if 0
|
|
aprint_normal_dev(&sc->sc_dev, "");
|
|
pci_conf_print(pa->pa_pc, pa->pa_tag, NULL);
|
|
#endif
|
|
|
|
confreg = pci_conf_read(pa->pa_pc, pa->pa_tag, AMDPM_CONFREG);
|
|
/* enable pm i/o space for AMD-8111 and nForce */
|
|
if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_AMD_PBC8111_ACPI ||
|
|
sc->sc_nforce)
|
|
confreg |= AMDPM_PMIOEN;
|
|
|
|
/* Enable random number generation for everyone */
|
|
pci_conf_write(pa->pa_pc, pa->pa_tag, AMDPM_CONFREG,
|
|
confreg | AMDPM_RNGEN);
|
|
confreg = pci_conf_read(pa->pa_pc, pa->pa_tag, AMDPM_CONFREG);
|
|
|
|
if ((confreg & AMDPM_PMIOEN) == 0) {
|
|
aprint_error_dev(&sc->sc_dev, "PMxx space isn't enabled\n");
|
|
return;
|
|
}
|
|
|
|
if (sc->sc_nforce) {
|
|
pmptrreg = pci_conf_read(pa->pa_pc, pa->pa_tag, NFORCE_PMPTR);
|
|
aprint_normal_dev(&sc->sc_dev, "power management at 0x%04x\n",
|
|
NFORCE_PMBASE(pmptrreg));
|
|
if (bus_space_map(sc->sc_iot, NFORCE_PMBASE(pmptrreg),
|
|
AMDPM_PMSIZE, 0, &sc->sc_ioh)) {
|
|
aprint_error_dev(&sc->sc_dev, "failed to map PMxx space\n");
|
|
return;
|
|
}
|
|
} else {
|
|
pmptrreg = pci_conf_read(pa->pa_pc, pa->pa_tag, AMDPM_PMPTR);
|
|
if (bus_space_map(sc->sc_iot, AMDPM_PMBASE(pmptrreg),
|
|
AMDPM_PMSIZE, 0, &sc->sc_ioh)) {
|
|
aprint_error_dev(&sc->sc_dev, "failed to map PMxx space\n");
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* don't attach a timecounter on nforce boards */
|
|
if ((confreg & AMDPM_TMRRST) == 0 && (confreg & AMDPM_STOPTMR) == 0 &&
|
|
!sc->sc_nforce) {
|
|
acpipmtimer_attach(&sc->sc_dev, sc->sc_iot, sc->sc_ioh,
|
|
AMDPM_TMR, ((confreg & AMDPM_TMR32) ? ACPIPMT_32BIT : 0));
|
|
}
|
|
|
|
/* try to attach devices on the smbus */
|
|
if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_AMD_PBC8111_ACPI ||
|
|
PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_AMD_PBC768_PMC ||
|
|
sc->sc_nforce) {
|
|
amdpm_smbus_attach(sc);
|
|
}
|
|
|
|
if (confreg & AMDPM_RNGEN) {
|
|
/* Check to see if we can read data from the RNG. */
|
|
(void) bus_space_read_4(sc->sc_iot, sc->sc_ioh,
|
|
AMDPM_RNGDATA);
|
|
for (i = 0; i < 1000; i++) {
|
|
pmreg = bus_space_read_4(sc->sc_iot,
|
|
sc->sc_ioh, AMDPM_RNGSTAT);
|
|
if (pmreg & AMDPM_RNGDONE)
|
|
break;
|
|
delay(1);
|
|
}
|
|
if ((pmreg & AMDPM_RNGDONE) != 0) {
|
|
aprint_normal_dev(&sc->sc_dev, ""
|
|
"random number generator enabled (apprx. %dms)\n",
|
|
i);
|
|
callout_init(&sc->sc_rnd_ch, 0);
|
|
rnd_attach_source(&sc->sc_rnd_source,
|
|
device_xname(&sc->sc_dev), RND_TYPE_RNG,
|
|
/*
|
|
* XXX Careful! The use of RND_FLAG_NO_ESTIMATE
|
|
* XXX here is unobvious: we later feed raw bits
|
|
* XXX into the "entropy pool" with rnd_add_data,
|
|
* XXX explicitly supplying an entropy estimate.
|
|
* XXX In this context, NO_ESTIMATE serves only
|
|
* XXX to prevent rnd_add_data from trying to
|
|
* XXX use the *time at which we added the data*
|
|
* XXX as entropy, which is not a good idea since
|
|
* XXX we add data periodically from a callout.
|
|
*/
|
|
RND_FLAG_NO_ESTIMATE);
|
|
#ifdef AMDPM_RND_COUNTERS
|
|
evcnt_attach_dynamic(&sc->sc_rnd_hits, EVCNT_TYPE_MISC,
|
|
NULL, device_xname(&sc->sc_dev), "rnd hits");
|
|
evcnt_attach_dynamic(&sc->sc_rnd_miss, EVCNT_TYPE_MISC,
|
|
NULL, device_xname(&sc->sc_dev), "rnd miss");
|
|
for (i = 0; i < 256; i++) {
|
|
evcnt_attach_dynamic(&sc->sc_rnd_data[i],
|
|
EVCNT_TYPE_MISC, NULL, device_xname(&sc->sc_dev),
|
|
"rnd data");
|
|
}
|
|
#endif
|
|
amdpm_rnd_callout(sc);
|
|
}
|
|
}
|
|
}
|
|
|
|
CFATTACH_DECL(amdpm, sizeof(struct amdpm_softc),
|
|
amdpm_match, amdpm_attach, NULL, NULL);
|
|
|
|
static void
|
|
amdpm_rnd_callout(void *v)
|
|
{
|
|
struct amdpm_softc *sc = v;
|
|
u_int32_t rngreg;
|
|
#ifdef AMDPM_RND_COUNTERS
|
|
int i;
|
|
#endif
|
|
|
|
if ((bus_space_read_4(sc->sc_iot, sc->sc_ioh, AMDPM_RNGSTAT) &
|
|
AMDPM_RNGDONE) != 0) {
|
|
rngreg = bus_space_read_4(sc->sc_iot, sc->sc_ioh,
|
|
AMDPM_RNGDATA);
|
|
rnd_add_data(&sc->sc_rnd_source, &rngreg,
|
|
sizeof(rngreg), sizeof(rngreg) * NBBY);
|
|
#ifdef AMDPM_RND_COUNTERS
|
|
AMDPM_RNDCNT_INCR(&sc->sc_rnd_hits);
|
|
for (i = 0; i < sizeof(rngreg); i++, rngreg >>= NBBY)
|
|
AMDPM_RNDCNT_INCR(&sc->sc_rnd_data[rngreg & 0xff]);
|
|
#endif
|
|
}
|
|
#ifdef AMDPM_RND_COUNTERS
|
|
else
|
|
AMDPM_RNDCNT_INCR(&sc->sc_rnd_miss);
|
|
#endif
|
|
callout_reset(&sc->sc_rnd_ch, 1, amdpm_rnd_callout, sc);
|
|
}
|