int
acpiec_getcrs(struct acpiec_softc *sc, struct acpi_attach_args *aa)
{
struct aml_value res;
bus_size_t ec_sc, ec_data;
int type1, type2;
char *buf;
int size, ret;
if (aml_evalname(sc->sc_acpi, sc->sc_devnode, "_GPE", 0, NULL, &res)) {
dnprintf(10, "%s: no _GPE\n", DEVNAME(sc));
return (1);
}
sc->sc_gpe = aml_val2int(&res);
aml_freevalue(&res);
if (aml_evalname(sc->sc_acpi, sc->sc_devnode, "_CRS", 0, NULL, &res)) {
dnprintf(10, "%s: no _CRS\n", DEVNAME(sc));
return (1);
}
/* Parse CRS to get control and data registers */
if (res.type != AML_OBJTYPE_BUFFER) {
dnprintf(10, "%s: unknown _CRS type %d\n",
DEVNAME(sc), res.type);
aml_freevalue(&res);
return (1);
}
size = res.length;
buf = res.v_buffer;
ret = acpiec_getregister(buf, size, &type1, &ec_data);
if (ret <= 0) {
dnprintf(10, "%s: failed to read DATA from _CRS\n",
DEVNAME(sc));
aml_freevalue(&res);
return (1);
}
buf += ret;
size -= ret;
ret = acpiec_getregister(buf, size, &type2, &ec_sc);
if (ret <= 0) {
dnprintf(10, "%s: failed to read S/C from _CRS\n",
DEVNAME(sc));
aml_freevalue(&res);
return (1);
}
buf += ret;
size -= ret;
if (size != 2 || *buf != RES_TYPE_ENDTAG) {
dnprintf(10, "%s: no _CRS end tag\n", DEVNAME(sc));
aml_freevalue(&res);
return (1);
}
aml_freevalue(&res);
/* XXX: todo - validate _CRS checksum? */
dnprintf(10, "%s: Data: 0x%x, S/C: 0x%x\n",
DEVNAME(sc), ec_data, ec_sc);
if (type1 == GAS_SYSTEM_IOSPACE)
sc->sc_cmd_bt = aa->aaa_iot;
else
sc->sc_cmd_bt = aa->aaa_memt;
if (bus_space_map(sc->sc_cmd_bt, ec_sc, 1, 0, &sc->sc_cmd_bh)) {
dnprintf(10, "%s: failed to map S/C reg.\n", DEVNAME(sc));
return (1);
}
if (type2 == GAS_SYSTEM_IOSPACE)
sc->sc_data_bt = aa->aaa_iot;
else
sc->sc_data_bt = aa->aaa_memt;
if (bus_space_map(sc->sc_data_bt, ec_data, 1, 0, &sc->sc_data_bh)) {
dnprintf(10, "%s: failed to map DATA reg.\n", DEVNAME(sc));
bus_space_unmap(sc->sc_cmd_bt, sc->sc_cmd_bh, 1);
return (1);
}
return (0);
}
int
acpiec_getcrs(struct acpiec_softc *sc, struct acpi_attach_args *aa)
{
struct aml_value res;
bus_size_t ec_sc, ec_data;
int dtype, ctype;
char *buf;
int size, ret;
int64_t gpe;
struct acpi_ecdt *ecdt = aa->aaa_table;
extern struct aml_node aml_root;
/* Check if this is ECDT initialization */
if (ecdt) {
/* Get GPE, Data and Control segments */
sc->sc_gpe = ecdt->gpe_bit;
ctype = ecdt->ec_control.address_space_id;
ec_sc = ecdt->ec_control.address;
dtype = ecdt->ec_data.address_space_id;
ec_data = ecdt->ec_data.address;
/* Get devnode from header */
sc->sc_devnode = aml_searchname(&aml_root, ecdt->ec_id);
goto ecdtdone;
}
if (aml_evalinteger(sc->sc_acpi, sc->sc_devnode, "_GPE", 0, NULL, &gpe)) {
dnprintf(10, "%s: no _GPE\n", DEVNAME(sc));
return (1);
}
sc->sc_gpe = gpe;
if (aml_evalname(sc->sc_acpi, sc->sc_devnode, "_CRS", 0, NULL, &res)) {
dnprintf(10, "%s: no _CRS\n", DEVNAME(sc));
return (1);
}
/* Parse CRS to get control and data registers */
if (res.type != AML_OBJTYPE_BUFFER) {
dnprintf(10, "%s: unknown _CRS type %d\n",
DEVNAME(sc), res.type);
aml_freevalue(&res);
return (1);
}
size = res.length;
buf = res.v_buffer;
ret = acpiec_getregister(buf, size, &dtype, &ec_data);
if (ret <= 0) {
dnprintf(10, "%s: failed to read DATA from _CRS\n",
DEVNAME(sc));
aml_freevalue(&res);
return (1);
}
buf += ret;
size -= ret;
ret = acpiec_getregister(buf, size, &ctype, &ec_sc);
if (ret <= 0) {
dnprintf(10, "%s: failed to read S/C from _CRS\n",
DEVNAME(sc));
aml_freevalue(&res);
return (1);
}
buf += ret;
size -= ret;
if (size != 2 || *buf != RES_TYPE_ENDTAG) {
dnprintf(10, "%s: no _CRS end tag\n", DEVNAME(sc));
aml_freevalue(&res);
return (1);
}
aml_freevalue(&res);
/* XXX: todo - validate _CRS checksum? */
ecdtdone:
dnprintf(10, "%s: Data: 0x%lx, S/C: 0x%lx\n",
DEVNAME(sc), ec_data, ec_sc);
if (ctype == GAS_SYSTEM_IOSPACE)
sc->sc_cmd_bt = aa->aaa_iot;
else
sc->sc_cmd_bt = aa->aaa_memt;
if (bus_space_map(sc->sc_cmd_bt, ec_sc, 1, 0, &sc->sc_cmd_bh)) {
dnprintf(10, "%s: failed to map S/C reg.\n", DEVNAME(sc));
return (1);
}
if (dtype == GAS_SYSTEM_IOSPACE)
sc->sc_data_bt = aa->aaa_iot;
else
sc->sc_data_bt = aa->aaa_memt;
if (bus_space_map(sc->sc_data_bt, ec_data, 1, 0, &sc->sc_data_bh)) {
dnprintf(10, "%s: failed to map DATA reg.\n", DEVNAME(sc));
bus_space_unmap(sc->sc_cmd_bt, sc->sc_cmd_bh, 1);
return (1);
}
return (0);
}
