/*
* 1st pass on BIOS's Intel MP specification table.
*
* initializes:
* mp_ncpus = 1
*
* determines:
* cpu_apic_address (common to all CPUs)
* ioapic_address[N]
* mp_naps
* mp_nbusses
* mp_napics
* nintrs
*/
void
mpbios_scan(struct device *self)
{
const u_int8_t *position, *end;
int count;
int type;
int intr_cnt, cur_intr;
paddr_t lapic_base;
const struct mpbios_int *iep;
struct mpbios_int ie;
struct ioapic_softc *sc;
printf(": Intel MP Specification 1.%d\n", mp_fps->spec_rev);
/*
* looks like we've got a MP system. start setting up
* infrastructure..
* XXX is this the right place??
*/
lapic_base = LAPIC_BASE;
if (mp_cth != NULL)
lapic_base = (paddr_t)mp_cth->apic_address;
lapic_boot_init(lapic_base);
/* check for use of 'default' configuration */
if (mp_fps->mpfb1 != 0) {
struct mpbios_proc pe;
printf("%s: MP default configuration %d\n",
self->dv_xname, mp_fps->mpfb1);
/* use default addresses */
pe.apic_id = lapic_cpu_number();
pe.cpu_flags = PROCENTRY_FLAG_EN|PROCENTRY_FLAG_BP;
pe.cpu_signature = cpu_info_primary.ci_signature;
pe.feature_flags = cpu_info_primary.ci_feature_flags;
mpbios_cpu((u_int8_t *)&pe, self);
pe.apic_id = 1 - lapic_cpu_number();
pe.cpu_flags = PROCENTRY_FLAG_EN;
mpbios_cpu((u_int8_t *)&pe, self);
mpbios_ioapic((u_int8_t *)&default_ioapic, self);
/* XXX */
printf("%s: WARNING: interrupts not configured\n",
self->dv_xname);
panic("lazy bum");
return;
} else {
/*
* should not happen; mp_probe returns 0 in this case,
* but..
*/
if (mp_cth == NULL)
panic("mpbios_scan: no config (can't happen?)");
/*
* Walk the table once, counting items
*/
position = (const u_int8_t *)(mp_cth);
end = position + mp_cth->base_len;
position += sizeof(*mp_cth);
count = mp_cth->entry_count;
intr_cnt = 0;
while ((count--) && (position < end)) {
type = *position;
if (type >= MPS_MCT_NTYPES) {
printf("%s: unknown entry type %x"
" in MP config table\n",
self->dv_xname, type);
break;
}
mp_conf[type].count++;
if (type == MPS_MCT_BUS) {
const struct mpbios_bus *bp =
(const struct mpbios_bus *)position;
if (bp->bus_id >= mp_nbusses)
mp_nbusses = bp->bus_id + 1;
}
/*
* Count actual interrupt instances.
* dst_apic_id of MPS_ALL_APICS means "wired to all
* apics of this type".
*/
if (type == MPS_MCT_IOINT) {
iep = (const struct mpbios_int *)position;
if (iep->dst_apic_id == MPS_ALL_APICS)
intr_cnt +=
mp_conf[MPS_MCT_IOAPIC].count;
else
intr_cnt++;
} else if (type == MPS_MCT_LINT)
intr_cnt++;
position += mp_conf[type].length;
}
mp_busses = malloc(sizeof(struct mp_bus) * mp_nbusses,
M_DEVBUF, M_NOWAIT|M_ZERO);
mp_intrs = malloc(sizeof(struct mp_intr_map) * intr_cnt,
M_DEVBUF, M_NOWAIT);
/* re-walk the table, recording info of interest */
position = (const u_int8_t *)mp_cth + sizeof(*mp_cth);
count = mp_cth->entry_count;
cur_intr = 0;
while ((count--) && (position < end)) {
switch (type = *(u_char *)position) {
case MPS_MCT_CPU:
mpbios_cpu(position, self);
break;
case MPS_MCT_BUS:
mpbios_bus(position, self);
break;
case MPS_MCT_IOAPIC:
mpbios_ioapic(position, self);
break;
case MPS_MCT_IOINT:
iep = (const struct mpbios_int *)position;
ie = *iep;
if (iep->dst_apic_id == MPS_ALL_APICS) {
for (sc = ioapics ; sc != NULL;
sc = sc->sc_next) {
ie.dst_apic_id = sc->sc_apicid;
if (mpbios_int((char *)&ie,
type, &mp_intrs[cur_intr]) == 0)
cur_intr++;
}
} else {
if (mpbios_int(position, type,
&mp_intrs[cur_intr]) == 0)
cur_intr++;
}
break;
case MPS_MCT_LINT:
if (mpbios_int(position, type,
&mp_intrs[cur_intr]) == 0)
cur_intr++;
break;
default:
printf("%s: unknown entry type %x "
"in MP config table\n",
self->dv_xname, type);
/* NOTREACHED */
return;
}
position += mp_conf[type].length;
}
mp_nintrs = cur_intr;
if (mp_verbose && mp_cth->ext_len)
printf("%s: MP WARNING: %d "
"bytes of extended entries not examined\n",
self->dv_xname, mp_cth->ext_len);
}
/* Clean up. */
mp_fps = NULL;
mpbios_unmap(&mp_fp_map);
if (mp_cth != NULL) {
mp_cth = NULL;
mpbios_unmap(&mp_cfg_table_map);
}
mpbios_scanned = 1;
#if NPCI > 0
mpbios_intr_fixup();
#endif
}
/*
* 1st pass on BIOS's Intel MP specification table.
*
* initializes:
* mp_ncpus = 1
*
* determines:
* cpu_apic_address (common to all CPUs)
* ioapic_address[N]
* mp_naps
* mp_nbusses
* mp_napics
* nintrs
*/
void
mpbios_scan(struct device *self)
{
const u_int8_t *position, *end;
int count;
int type;
int intr_cnt;
paddr_t lapic_base;
printf(": Intel MP Specification 1.%d\n", mp_fps->spec_rev);
/*
* looks like we've got a MP system. start setting up
* infrastructure..
* XXX is this the right place??
*/
lapic_base = LAPIC_BASE;
if (mp_cth != NULL)
lapic_base = (paddr_t)mp_cth->apic_address;
lapic_boot_init(lapic_base);
/*
* Walk the table once, counting items
*/
for (count = mp_cth->entry_count,
position = (const u_int8_t *)mp_cth + sizeof(*mp_cth),
end = position + mp_cth->base_len;
count-- && position < end;
position += mp_conf[type].length) {
type = *position;
if (type >= MPS_MCT_NTYPES) {
printf("%s: unknown entry type %x"
" in MP config table\n",
self->dv_xname, type);
end = position;
break;
}
mp_conf[type].count++;
}
/*
* Walk the table twice, counting int and bus entries
*/
for (count = mp_cth->entry_count,
intr_cnt = 15, /* presume all isa irqs missing */
position = (const u_int8_t *)mp_cth + sizeof(*mp_cth);
count-- && position < end;
position += mp_conf[type].length) {
type = *position;
if (type == MPS_MCT_BUS) {
const struct mpbios_bus *bp =
(const struct mpbios_bus *)position;
if (bp->bus_id >= mp_nbusses)
mp_nbusses = bp->bus_id + 1;
}
/*
* Count actual interrupt instances.
* dst_apic_id of MPS_ALL_APICS means "wired to all
* apics of this type".
*/
if ((type == MPS_MCT_IOINT) ||
(type == MPS_MCT_LINT)) {
const struct mpbios_int *ie =
(const struct mpbios_int *)position;
if (ie->dst_apic_id != MPS_ALL_APICS)
intr_cnt++;
else if (type == MPS_MCT_IOINT)
intr_cnt +=
mp_conf[MPS_MCT_IOAPIC].count;
else
intr_cnt += mp_conf[MPS_MCT_CPU].count;
}
}
mp_busses = mallocarray(mp_nbusses, sizeof(struct mp_bus),
M_DEVBUF, M_WAITOK|M_ZERO);
mp_intrs = mallocarray(intr_cnt, sizeof(struct mp_intr_map),
M_DEVBUF, M_WAITOK);
/* re-walk the table, recording info of interest */
position = (const u_int8_t *)mp_cth + sizeof(*mp_cth);
count = mp_cth->entry_count;
mp_nintrs = 0;
while ((count--) && (position < end)) {
switch (type = *(u_char *)position) {
case MPS_MCT_CPU:
mpbios_cpu(position, self);
break;
case MPS_MCT_BUS:
mpbios_bus(position, self);
break;
case MPS_MCT_IOAPIC:
mpbios_ioapic(position, self);
break;
case MPS_MCT_IOINT:
case MPS_MCT_LINT:
if (mpbios_int(position,
&mp_intrs[mp_nintrs]) == 0)
mp_nintrs++;
break;
default:
printf("%s: unknown entry type %x "
"in MP config table\n",
self->dv_xname, type);
/* NOTREACHED */
return;
}
position += mp_conf[type].length;
}
if (mp_verbose && mp_cth->ext_len)
printf("%s: MP WARNING: %d "
"bytes of extended entries not examined\n",
self->dv_xname, mp_cth->ext_len);
/* Clean up. */
mp_fps = NULL;
mpbios_unmap(&mp_fp_map);
if (mp_cth != NULL) {
mp_cth = NULL;
mpbios_unmap(&mp_cfg_table_map);
}
#if NPCI > 0
if (pci_mode_detect() != 0)
mpbios_intr_fixup();
#endif
}
