static void
piixpm_attach(device_t parent, device_t self, void *aux)
{
struct piixpm_softc *sc = device_private(self);
struct pci_attach_args *pa = aux;
struct i2cbus_attach_args iba;
pcireg_t base, conf;
pcireg_t pmmisc;
pci_intr_handle_t ih;
const char *intrstr = NULL;
int i, numbusses = 1;
sc->sc_dev = self;
sc->sc_iot = pa->pa_iot;
sc->sc_id = pa->pa_id;
sc->sc_pc = pa->pa_pc;
sc->sc_pcitag = pa->pa_tag;
pci_aprint_devinfo(pa, NULL);
if (!pmf_device_register(self, piixpm_suspend, piixpm_resume))
aprint_error_dev(self, "couldn't establish power handler\n");
/* Read configuration */
conf = pci_conf_read(pa->pa_pc, pa->pa_tag, PIIX_SMB_HOSTC);
DPRINTF(("%s: conf 0x%x\n", device_xname(self), conf));
if ((PCI_VENDOR(pa->pa_id) != PCI_VENDOR_INTEL) ||
(PCI_PRODUCT(pa->pa_id) != PCI_PRODUCT_INTEL_82371AB_PMC))
goto nopowermanagement;
/* check whether I/O access to PM regs is enabled */
pmmisc = pci_conf_read(pa->pa_pc, pa->pa_tag, PIIX_PMREGMISC);
if (!(pmmisc & 1))
goto nopowermanagement;
/* Map I/O space */
base = pci_conf_read(pa->pa_pc, pa->pa_tag, PIIX_PM_BASE);
if (bus_space_map(sc->sc_pm_iot, PCI_MAPREG_IO_ADDR(base),
PIIX_PM_SIZE, 0, &sc->sc_pm_ioh)) {
aprint_error_dev(self, "can't map power management I/O space\n");
goto nopowermanagement;
}
/*
* Revision 0 and 1 are PIIX4, 2 is PIIX4E, 3 is PIIX4M.
* PIIX4 and PIIX4E have a bug in the timer latch, see Errata #20
* in the "Specification update" (document #297738).
*/
acpipmtimer_attach(self, sc->sc_pm_iot, sc->sc_pm_ioh,
PIIX_PM_PMTMR,
(PCI_REVISION(pa->pa_class) < 3) ? ACPIPMT_BADLATCH : 0 );
nopowermanagement:
/* SB800 rev 0x40+ needs special initialization */
if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_ATI &&
PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_ATI_SB600_SMB &&
PCI_REVISION(pa->pa_class) >= 0x40) {
if (piixpm_sb800_init(sc) == 0) {
numbusses = 4;
goto attach_i2c;
}
aprint_normal_dev(self, "SMBus disabled\n");
return;
}
if ((conf & PIIX_SMB_HOSTC_HSTEN) == 0) {
aprint_normal_dev(self, "SMBus disabled\n");
return;
}
/* Map I/O space */
base = pci_conf_read(pa->pa_pc, pa->pa_tag, PIIX_SMB_BASE) & 0xffff;
if (bus_space_map(sc->sc_smb_iot, PCI_MAPREG_IO_ADDR(base),
PIIX_SMB_SIZE, 0, &sc->sc_smb_ioh)) {
aprint_error_dev(self, "can't map smbus I/O space\n");
return;
}
sc->sc_poll = 1;
aprint_normal_dev(self, "");
if ((conf & PIIX_SMB_HOSTC_INTMASK) == PIIX_SMB_HOSTC_SMI) {
/* No PCI IRQ */
aprint_normal("interrupting at SMI, ");
} else if ((conf & PIIX_SMB_HOSTC_INTMASK) == PIIX_SMB_HOSTC_IRQ) {
/* Install interrupt handler */
if (pci_intr_map(pa, &ih) == 0) {
intrstr = pci_intr_string(pa->pa_pc, ih);
sc->sc_smb_ih = pci_intr_establish(pa->pa_pc, ih, IPL_BIO,
piixpm_intr, sc);
if (sc->sc_smb_ih != NULL) {
aprint_normal("interrupting at %s", intrstr);
sc->sc_poll = 0;
}
}
}
if (sc->sc_poll)
aprint_normal("polling");
aprint_normal("\n");
attach_i2c:
/* Attach I2C bus */
mutex_init(&sc->sc_i2c_mutex, MUTEX_DEFAULT, IPL_NONE);
for (i = 0; i < numbusses; i++) {
sc->sc_busses[i].sda = i;
sc->sc_busses[i].softc = sc;
sc->sc_i2c_tags[i].ic_cookie = &sc->sc_busses[i];
sc->sc_i2c_tags[i].ic_acquire_bus = piixpm_i2c_acquire_bus;
sc->sc_i2c_tags[i].ic_release_bus = piixpm_i2c_release_bus;
sc->sc_i2c_tags[i].ic_exec = piixpm_i2c_exec;
memset(&iba, 0, sizeof(iba));
iba.iba_type = I2C_TYPE_SMBUS;
iba.iba_tag = &sc->sc_i2c_tags[i];
config_found_ia(self, "i2cbus", &iba, iicbus_print);
}
}
static void
piixpm_attach(device_t parent, device_t self, void *aux)
{
struct piixpm_softc *sc = device_private(self);
struct pci_attach_args *pa = aux;
struct i2cbus_attach_args iba;
pcireg_t base, conf;
pcireg_t pmmisc;
pci_intr_handle_t ih;
char devinfo[256];
const char *intrstr = NULL;
sc->sc_dev = self;
sc->sc_pc = pa->pa_pc;
sc->sc_pcitag = pa->pa_tag;
aprint_naive("\n");
aprint_normal("\n");
pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo));
aprint_normal_dev(self, "%s (rev. 0x%02x)\n", devinfo,
PCI_REVISION(pa->pa_class));
if (!pmf_device_register(self, piixpm_suspend, piixpm_resume))
aprint_error_dev(self, "couldn't establish power handler\n");
/* Read configuration */
conf = pci_conf_read(pa->pa_pc, pa->pa_tag, PIIX_SMB_HOSTC);
DPRINTF(("%s: conf 0x%x\n", device_xname(self), conf));
if ((PCI_VENDOR(pa->pa_id) != PCI_VENDOR_INTEL) ||
(PCI_PRODUCT(pa->pa_id) != PCI_PRODUCT_INTEL_82371AB_PMC))
goto nopowermanagement;
/* check whether I/O access to PM regs is enabled */
pmmisc = pci_conf_read(pa->pa_pc, pa->pa_tag, PIIX_PMREGMISC);
if (!(pmmisc & 1))
goto nopowermanagement;
sc->sc_pm_iot = pa->pa_iot;
/* Map I/O space */
base = pci_conf_read(pa->pa_pc, pa->pa_tag, PIIX_PM_BASE);
if (bus_space_map(sc->sc_pm_iot, PCI_MAPREG_IO_ADDR(base),
PIIX_PM_SIZE, 0, &sc->sc_pm_ioh)) {
aprint_error_dev(self, "can't map power management I/O space\n");
goto nopowermanagement;
}
/*
* Revision 0 and 1 are PIIX4, 2 is PIIX4E, 3 is PIIX4M.
* PIIX4 and PIIX4E have a bug in the timer latch, see Errata #20
* in the "Specification update" (document #297738).
*/
acpipmtimer_attach(self, sc->sc_pm_iot, sc->sc_pm_ioh,
PIIX_PM_PMTMR,
(PCI_REVISION(pa->pa_class) < 3) ? ACPIPMT_BADLATCH : 0 );
nopowermanagement:
if ((conf & PIIX_SMB_HOSTC_HSTEN) == 0) {
aprint_normal_dev(self, "SMBus disabled\n");
return;
}
/* Map I/O space */
sc->sc_smb_iot = pa->pa_iot;
base = pci_conf_read(pa->pa_pc, pa->pa_tag, PIIX_SMB_BASE) & 0xffff;
if (bus_space_map(sc->sc_smb_iot, PCI_MAPREG_IO_ADDR(base),
PIIX_SMB_SIZE, 0, &sc->sc_smb_ioh)) {
aprint_error_dev(self, "can't map smbus I/O space\n");
return;
}
sc->sc_poll = 1;
if ((conf & PIIX_SMB_HOSTC_INTMASK) == PIIX_SMB_HOSTC_SMI) {
/* No PCI IRQ */
aprint_normal_dev(self, "interrupting at SMI");
} else if ((conf & PIIX_SMB_HOSTC_INTMASK) == PIIX_SMB_HOSTC_IRQ) {
/* Install interrupt handler */
if (pci_intr_map(pa, &ih) == 0) {
intrstr = pci_intr_string(pa->pa_pc, ih);
sc->sc_smb_ih = pci_intr_establish(pa->pa_pc, ih, IPL_BIO,
piixpm_intr, sc);
if (sc->sc_smb_ih != NULL) {
aprint_normal_dev(self, "interrupting at %s",
intrstr);
sc->sc_poll = 0;
}
}
}
if (sc->sc_poll)
aprint_normal_dev(self, "polling");
aprint_normal("\n");
/* Attach I2C bus */
rw_init(&sc->sc_i2c_rwlock);
sc->sc_i2c_tag.ic_cookie = sc;
sc->sc_i2c_tag.ic_acquire_bus = piixpm_i2c_acquire_bus;
sc->sc_i2c_tag.ic_release_bus = piixpm_i2c_release_bus;
sc->sc_i2c_tag.ic_exec = piixpm_i2c_exec;
bzero(&iba, sizeof(iba));
iba.iba_tag = &sc->sc_i2c_tag;
config_found_ia(self, "i2cbus", &iba, iicbus_print);
return;
}