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-rw-r--r--sys/amd64/conf/NOTES5
-rw-r--r--sys/conf/files.amd641
-rw-r--r--sys/conf/files.i3861
-rw-r--r--sys/dev/superio/superio.c953
-rw-r--r--sys/dev/superio/superio.h79
-rw-r--r--sys/i386/conf/NOTES5
-rw-r--r--sys/modules/Makefile2
-rw-r--r--sys/modules/superio/Makefile9
8 files changed, 1055 insertions, 0 deletions
diff --git a/sys/amd64/conf/NOTES b/sys/amd64/conf/NOTES
index a11935f447fe..e053a1f814d4 100644
--- a/sys/amd64/conf/NOTES
+++ b/sys/amd64/conf/NOTES
@@ -567,6 +567,11 @@ device amdtemp
device cpuctl
#
+# SuperIO driver.
+#
+device superio
+
+#
# System Management Bus (SMB)
#
options ENABLE_ALART # Control alarm on Intel intpm driver
diff --git a/sys/conf/files.amd64 b/sys/conf/files.amd64
index 81cd730a5c34..49f4412c25ae 100644
--- a/sys/conf/files.amd64
+++ b/sys/conf/files.amd64
@@ -493,6 +493,7 @@ dev/smartpqi/smartpqi_response.c optional smartpqi
dev/smartpqi/smartpqi_sis.c optional smartpqi
dev/smartpqi/smartpqi_tag.c optional smartpqi
dev/speaker/spkr.c optional speaker
+dev/superio/superio.c optional superio isa
dev/syscons/apm/apm_saver.c optional apm_saver apm
dev/syscons/scvesactl.c optional sc vga vesa
dev/syscons/scvgarndr.c optional sc vga
diff --git a/sys/conf/files.i386 b/sys/conf/files.i386
index ee0d1e673218..3aa31b389919 100644
--- a/sys/conf/files.i386
+++ b/sys/conf/files.i386
@@ -312,6 +312,7 @@ dev/sio/sio_pccard.c optional sio pccard
dev/sio/sio_pci.c optional sio pci
dev/sio/sio_puc.c optional sio puc
dev/speaker/spkr.c optional speaker
+dev/superio/superio.c optional superio isa
dev/syscons/apm/apm_saver.c optional apm_saver apm
dev/syscons/scvesactl.c optional sc vga vesa
dev/syscons/scvgarndr.c optional sc vga
diff --git a/sys/dev/superio/superio.c b/sys/dev/superio/superio.c
new file mode 100644
index 000000000000..b30d38f509ab
--- /dev/null
+++ b/sys/dev/superio/superio.c
@@ -0,0 +1,953 @@
+/*
+ * Copyright (c) 2016 Andriy Gapon
+ * All rights reserved.
+ *
+ * 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 AUTHOR 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 AUTHOR 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>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/bus.h>
+#include <sys/conf.h>
+#include <sys/kernel.h>
+#include <sys/lock.h>
+#include <sys/mutex.h>
+#include <sys/malloc.h>
+#include <sys/module.h>
+#include <sys/proc.h>
+#include <sys/rman.h>
+#include <sys/time.h>
+
+#include <machine/bus.h>
+#include <machine/resource.h>
+#include <machine/stdarg.h>
+
+#include <isa/isavar.h>
+
+#include <dev/superio/superio.h>
+
+#include "isa_if.h"
+
+
+typedef void (*sio_conf_enter_f)(struct resource*, uint16_t);
+typedef void (*sio_conf_exit_f)(struct resource*, uint16_t);
+
+struct sio_conf_methods {
+ sio_conf_enter_f enter;
+ sio_conf_exit_f exit;
+ superio_vendor_t vendor;
+};
+
+struct sio_device {
+ uint8_t ldn;
+ superio_dev_type_t type;
+};
+
+struct superio_devinfo {
+ STAILQ_ENTRY(superio_devinfo) link;
+ struct resource_list resources;
+ device_t dev;
+ uint8_t ldn;
+ superio_dev_type_t type;
+ uint16_t iobase;
+ uint16_t iobase2;
+ uint8_t irq;
+ uint8_t dma;
+};
+
+struct siosc {
+ struct mtx conf_lock;
+ STAILQ_HEAD(, superio_devinfo) devlist;
+ struct resource* io_res;
+ int io_rid;
+ uint16_t io_port;
+ const struct sio_conf_methods *methods;
+ const struct sio_device *known_devices;
+ superio_vendor_t vendor;
+ uint16_t devid;
+ uint8_t revid;
+ uint8_t current_ldn;
+ uint8_t ldn_reg;
+ uint8_t enable_reg;
+};
+
+#define NUMPORTS 2
+
+static uint8_t
+sio_read(struct resource* res, uint8_t reg)
+{
+ bus_write_1(res, 0, reg);
+ return (bus_read_1(res, 1));
+}
+
+/* Read a word from two one-byte registers, big endian. */
+static uint16_t
+sio_readw(struct resource* res, uint8_t reg)
+{
+ uint16_t v;
+
+ v = sio_read(res, reg);
+ v <<= 8;
+ v |= sio_read(res, reg + 1);
+ return (v);
+}
+
+static void
+sio_write(struct resource* res, uint8_t reg, uint8_t val)
+{
+ bus_write_1(res, 0, reg);
+ bus_write_1(res, 1, val);
+}
+
+static void
+sio_ldn_select(struct siosc *sc, uint8_t ldn)
+{
+ mtx_assert(&sc->conf_lock, MA_OWNED);
+ if (ldn == sc->current_ldn)
+ return;
+ sio_write(sc->io_res, sc->ldn_reg, ldn);
+ sc->current_ldn = ldn;
+}
+
+static uint8_t
+sio_ldn_read(struct siosc *sc, uint8_t ldn, uint8_t reg)
+{
+ mtx_assert(&sc->conf_lock, MA_OWNED);
+ if (reg >= sc->enable_reg) {
+ sio_ldn_select(sc, ldn);
+ KASSERT(sc->current_ldn == ldn, ("sio_ldn_select failed"));
+ }
+ return (sio_read(sc->io_res, reg));
+}
+
+static uint16_t
+sio_ldn_readw(struct siosc *sc, uint8_t ldn, uint8_t reg)
+{
+ mtx_assert(&sc->conf_lock, MA_OWNED);
+ if (reg >= sc->enable_reg) {
+ sio_ldn_select(sc, ldn);
+ KASSERT(sc->current_ldn == ldn, ("sio_ldn_select failed"));
+ }
+ return (sio_readw(sc->io_res, reg));
+}
+
+static void
+sio_ldn_write(struct siosc *sc, uint8_t ldn, uint8_t reg, uint8_t val)
+{
+ mtx_assert(&sc->conf_lock, MA_OWNED);
+ if (reg <= sc->ldn_reg) {
+ printf("ignored attempt to write special register 0x%x\n", reg);
+ return;
+ }
+ sio_ldn_select(sc, ldn);
+ KASSERT(sc->current_ldn == ldn, ("sio_ldn_select failed"));
+ sio_write(sc->io_res, reg, val);
+}
+
+static void
+sio_conf_enter(struct siosc *sc)
+{
+ mtx_lock(&sc->conf_lock);
+ sc->methods->enter(sc->io_res, sc->io_port);
+}
+
+static void
+sio_conf_exit(struct siosc *sc)
+{
+ sc->methods->exit(sc->io_res, sc->io_port);
+ mtx_unlock(&sc->conf_lock);
+}
+
+static void
+ite_conf_enter(struct resource* res, uint16_t port)
+{
+ bus_write_1(res, 0, 0x87);
+ bus_write_1(res, 0, 0x01);
+ bus_write_1(res, 0, 0x55);
+ bus_write_1(res, 0, port == 0x2e ? 0x55 : 0xaa);
+}
+
+static void
+ite_conf_exit(struct resource* res, uint16_t port)
+{
+ sio_write(res, 0x02, 0x02);
+}
+
+static const struct sio_conf_methods ite_conf_methods = {
+ .enter = ite_conf_enter,
+ .exit = ite_conf_exit,
+ .vendor = SUPERIO_VENDOR_ITE
+};
+
+static void
+nvt_conf_enter(struct resource* res, uint16_t port)
+{
+ bus_write_1(res, 0, 0x87);
+ bus_write_1(res, 0, 0x87);
+}
+
+static void
+nvt_conf_exit(struct resource* res, uint16_t port)
+{
+ bus_write_1(res, 0, 0xaa);
+}
+
+static const struct sio_conf_methods nvt_conf_methods = {
+ .enter = nvt_conf_enter,
+ .exit = nvt_conf_exit,
+ .vendor = SUPERIO_VENDOR_NUVOTON
+};
+
+static const struct sio_conf_methods * const methods_table[] = {
+ &ite_conf_methods,
+ &nvt_conf_methods,
+ NULL
+};
+
+static const uint16_t ports_table[] = {
+ 0x2e, 0x4e, 0
+};
+
+const struct sio_device ite_devices[] = {
+ { .ldn = 4, .type = SUPERIO_DEV_HWM },
+ { .ldn = 7, .type = SUPERIO_DEV_WDT },
+ { .type = SUPERIO_DEV_NONE },
+};
+
+const struct sio_device nvt_devices[] = {
+ { .ldn = 8, .type = SUPERIO_DEV_WDT },
+ { .type = SUPERIO_DEV_NONE },
+};
+
+const struct sio_device nct5104_devices[] = {
+ { .ldn = 7, .type = SUPERIO_DEV_GPIO },
+ { .ldn = 8, .type = SUPERIO_DEV_WDT },
+ { .ldn = 15, .type = SUPERIO_DEV_GPIO },
+ { .type = SUPERIO_DEV_NONE },
+};
+
+static const struct {
+ superio_vendor_t vendor;
+ uint16_t devid;
+ uint16_t mask;
+ const char *descr;
+ const struct sio_device *devices;
+} superio_table[] = {
+ {
+ .vendor = SUPERIO_VENDOR_ITE, .devid = 0x8712,
+ .devices = ite_devices,
+ },
+ {
+ .vendor = SUPERIO_VENDOR_ITE, .devid = 0x8716,
+ .devices = ite_devices,
+ },
+ {
+ .vendor = SUPERIO_VENDOR_ITE, .devid = 0x8718,
+ .devices = ite_devices,
+ },
+ {
+ .vendor = SUPERIO_VENDOR_ITE, .devid = 0x8720,
+ .devices = ite_devices,
+ },
+ {
+ .vendor = SUPERIO_VENDOR_ITE, .devid = 0x8721,
+ .devices = ite_devices,
+ },
+ {
+ .vendor = SUPERIO_VENDOR_ITE, .devid = 0x8726,
+ .devices = ite_devices,
+ },
+ {
+ .vendor = SUPERIO_VENDOR_ITE, .devid = 0x8728,
+ .devices = ite_devices,
+ },
+ {
+ .vendor = SUPERIO_VENDOR_ITE, .devid = 0x8771,
+ .devices = ite_devices,
+ },
+ {
+ .vendor = SUPERIO_VENDOR_NUVOTON, .devid = 0x1061, .mask = 0x00,
+ .descr = "Nuvoton NCT5104D/NCT6102D/NCT6106D (rev. A)",
+ .devices = nct5104_devices,
+ },
+ {
+ .vendor = SUPERIO_VENDOR_NUVOTON, .devid = 0x5200, .mask = 0xff,
+ .descr = "Winbond 83627HF/F/HG/G",
+ .devices = nvt_devices,
+ },
+ {
+ .vendor = SUPERIO_VENDOR_NUVOTON, .devid = 0x5900, .mask = 0xff,
+ .descr = "Winbond 83627S",
+ .devices = nvt_devices,
+ },
+ {
+ .vendor = SUPERIO_VENDOR_NUVOTON, .devid = 0x6000, .mask = 0xff,
+ .descr = "Winbond 83697HF",
+ .devices = nvt_devices,
+ },
+ {
+ .vendor = SUPERIO_VENDOR_NUVOTON, .devid = 0x6800, .mask = 0xff,
+ .descr = "Winbond 83697UG",
+ .devices = nvt_devices,
+ },
+ {
+ .vendor = SUPERIO_VENDOR_NUVOTON, .devid = 0x7000, .mask = 0xff,
+ .descr = "Winbond 83637HF",
+ .devices = nvt_devices,
+ },
+ {
+ .vendor = SUPERIO_VENDOR_NUVOTON, .devid = 0x8200, .mask = 0xff,
+ .descr = "Winbond 83627THF",
+ .devices = nvt_devices,
+ },
+ {
+ .vendor = SUPERIO_VENDOR_NUVOTON, .devid = 0x8500, .mask = 0xff,
+ .descr = "Winbond 83687THF",
+ .devices = nvt_devices,
+ },
+ {
+ .vendor = SUPERIO_VENDOR_NUVOTON, .devid = 0x8800, .mask = 0xff,
+ .descr = "Winbond 83627EHF",
+ .devices = nvt_devices,
+ },
+ {
+ .vendor = SUPERIO_VENDOR_NUVOTON, .devid = 0xa000, .mask = 0xff,
+ .descr = "Winbond 83627DHG",
+ .devices = nvt_devices,
+ },
+ {
+ .vendor = SUPERIO_VENDOR_NUVOTON, .devid = 0xa200, .mask = 0xff,
+ .descr = "Winbond 83627UHG",
+ .devices = nvt_devices,
+ },
+ {
+ .vendor = SUPERIO_VENDOR_NUVOTON, .devid = 0xa500, .mask = 0xff,
+ .descr = "Winbond 83667HG",
+ .devices = nvt_devices,
+ },
+ {
+ .vendor = SUPERIO_VENDOR_NUVOTON, .devid = 0xb000, .mask = 0xff,
+ .descr = "Winbond 83627DHG-P",
+ .devices = nvt_devices,
+ },
+ {
+ .vendor = SUPERIO_VENDOR_NUVOTON, .devid = 0xb300, .mask = 0xff,
+ .descr = "Winbond 83667HG-B",
+ .devices = nvt_devices,
+ },
+ {
+ .vendor = SUPERIO_VENDOR_NUVOTON, .devid = 0xb400, .mask = 0xff,
+ .descr = "Nuvoton NCT6775",
+ .devices = nvt_devices,
+ },
+ {
+ .vendor = SUPERIO_VENDOR_NUVOTON, .devid = 0xc300, .mask = 0xff,
+ .descr = "Nuvoton NCT6776",
+ .devices = nvt_devices,
+ },
+ {
+ .vendor = SUPERIO_VENDOR_NUVOTON, .devid = 0xc400, .mask = 0xff,
+ .descr = "Nuvoton NCT5104D/NCT6102D/NCT6106D (rev. B+)",
+ .devices = nct5104_devices,
+ },
+ {
+ .vendor = SUPERIO_VENDOR_NUVOTON, .devid = 0xc500, .mask = 0xff,
+ .descr = "Nuvoton NCT6779",
+ .devices = nvt_devices,
+ },
+ {
+ .vendor = SUPERIO_VENDOR_NUVOTON, .devid = 0xc800, .mask = 0xff,
+ .descr = "Nuvoton NCT6791",
+ .devices = nvt_devices,
+ },
+ {
+ .vendor = SUPERIO_VENDOR_NUVOTON, .devid = 0xc900, .mask = 0xff,
+ .descr = "Nuvoton NCT6792",
+ .devices = nvt_devices,
+ },
+ {
+ .vendor = SUPERIO_VENDOR_NUVOTON, .devid = 0xd100, .mask = 0xff,
+ .descr = "Nuvoton NCT6793",
+ .devices = nvt_devices,
+ },
+ {
+ .vendor = SUPERIO_VENDOR_NUVOTON, .devid = 0xd300, .mask = 0xff,
+ .descr = "Nuvoton NCT6795",
+ .devices = nvt_devices,
+ },
+ { 0, 0 }
+};
+
+static const char *
+devtype_to_str(superio_dev_type_t type)
+{
+ switch (type) {
+ case SUPERIO_DEV_NONE:
+ return ("invalid");
+ case SUPERIO_DEV_HWM:
+ return ("HWM");
+ case SUPERIO_DEV_WDT:
+ return ("WDT");
+ case SUPERIO_DEV_GPIO:
+ return ("GPIO");
+ case SUPERIO_DEV_MAX:
+ return ("invalid");
+ }
+}
+
+static int
+superio_detect(device_t dev, bool claim, struct siosc *sc)
+{
+ struct resource *res;
+ rman_res_t port;
+ rman_res_t count;
+ uint16_t devid;
+ uint8_t revid;
+ int error;
+ int rid;
+ int i, m;
+
+ error = bus_get_resource(dev, SYS_RES_IOPORT, 0, &port, &count);
+ if (error != 0)
+ return (error);
+ if (port > UINT16_MAX || count < NUMPORTS) {
+ device_printf(dev, "unexpected I/O range size\n");
+ return (ENXIO);
+ }
+
+ /*
+ * Make a temporary resource reservation for hardware probing.
+ * If we can't get the resources we need then
+ * we need to abort. Possibly this indicates
+ * the resources were used by another device
+ * in which case the probe would have failed anyhow.
+ */
+ rid = 0;
+ res = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, RF_ACTIVE);
+ if (res == NULL) {
+ if (claim)
+ device_printf(dev, "failed to allocate I/O resource\n");
+ return (ENXIO);
+ }
+
+ for (m = 0; methods_table[m] != NULL; m++) {
+ methods_table[m]->enter(res, port);
+ if (methods_table[m]->vendor == SUPERIO_VENDOR_ITE) {
+ devid = sio_readw(res, 0x20);
+ revid = sio_read(res, 0x22);
+ } else if (methods_table[m]->vendor == SUPERIO_VENDOR_NUVOTON) {
+ devid = sio_read(res, 0x20);
+ revid = sio_read(res, 0x21);
+ devid = (devid << 8) | revid;
+ } else {
+ continue;
+ }
+ methods_table[m]->exit(res, port);
+ for (i = 0; superio_table[i].vendor != 0; i++) {
+ uint16_t mask;
+
+ mask = superio_table[i].mask;
+ if (superio_table[i].vendor !=
+ methods_table[m]->vendor)
+ continue;
+ if ((superio_table[i].devid & ~mask) != (devid & ~mask))
+ continue;
+ break;
+ }
+
+ /* Found a matching SuperIO entry. */
+ if (superio_table[i].vendor != 0)
+ break;
+ }
+
+ if (methods_table[m] == NULL)
+ error = ENXIO;
+ else
+ error = 0;
+ if (!claim || error != 0) {
+ bus_release_resource(dev, SYS_RES_IOPORT, rid, res);
+ return (error);
+ }
+
+ sc->methods = methods_table[m];
+ sc->vendor = sc->methods->vendor;
+ sc->known_devices = superio_table[i].devices;
+ sc->io_res = res;
+ sc->io_rid = rid;
+ sc->io_port = port;
+ sc->devid = devid;
+ sc->revid = revid;
+
+ KASSERT(sc->vendor == SUPERIO_VENDOR_ITE ||
+ sc->vendor == SUPERIO_VENDOR_NUVOTON,
+ ("Only ITE and Nuvoton SuperIO-s are supported"));
+ sc->ldn_reg = 0x07;
+ sc->enable_reg = 0x30;
+ sc->current_ldn = 0xff; /* no device should have this */
+
+ if (superio_table[i].descr != NULL) {
+ device_set_desc(dev, superio_table[i].descr);
+ } else if (sc->vendor == SUPERIO_VENDOR_ITE) {
+ char descr[64];
+
+ snprintf(descr, sizeof(descr),
+ "ITE IT%4x SuperIO (revision 0x%02x)",
+ sc->devid, sc->revid);
+ device_set_desc_copy(dev, descr);
+ }
+ return (0);
+}
+
+static void
+superio_identify(driver_t *driver, device_t parent)
+{
+ device_t child;
+ int i;
+
+ /*
+ * Don't create child devices if any already exist.
+ * Those could be created via isa hints or if this
+ * driver is loaded, unloaded and then loaded again.
+ */
+ if (device_find_child(parent, "superio", -1)) {
+ if (bootverbose)
+ printf("superio: device(s) already created\n");
+ return;
+ }
+
+ /*
+ * Create a child for each candidate port.
+ * It would be nice if we could somehow clean up those
+ * that this driver fails to probe.
+ */
+ for (i = 0; ports_table[i] != 0; i++) {
+ child = BUS_ADD_CHILD(parent, ISA_ORDER_SPECULATIVE,
+ "superio", -1);
+ if (child == NULL) {
+ device_printf(parent, "failed to add superio child\n");
+ continue;
+ }
+ bus_set_resource(child, SYS_RES_IOPORT, 0, ports_table[i], 2);
+ if (superio_detect(child, false, NULL) != 0)
+ device_delete_child(parent, child);
+ }
+}
+
+static int
+superio_probe(device_t dev)
+{
+ struct siosc *sc;
+ int error;
+
+ /* Make sure we do not claim some ISA PNP device. */
+ if (isa_get_logicalid(dev) != 0)
+ return (ENXIO);
+
+ /*
+ * XXX We can populate the softc now only because we return
+ * BUS_PROBE_SPECIFIC
+ */
+ sc = device_get_softc(dev);
+ error = superio_detect(dev, true, sc);
+ if (error != 0)
+ return (error);
+ return (BUS_PROBE_SPECIFIC);
+}
+
+static void
+superio_add_known_child(device_t dev, superio_dev_type_t type, uint8_t ldn)
+{
+ struct siosc *sc = device_get_softc(dev);
+ struct superio_devinfo *dinfo;
+ device_t child;
+
+ child = BUS_ADD_CHILD(dev, 0, NULL, -1);
+ if (child == NULL) {
+ device_printf(dev, "failed to add child for ldn %d, type %s\n",
+ ldn, devtype_to_str(type));
+ return;
+ }
+ dinfo = device_get_ivars(child);
+ dinfo->ldn = ldn;
+ dinfo->type = type;
+ sio_conf_enter(sc);
+ dinfo->iobase = sio_ldn_readw(sc, ldn, 0x60);
+ dinfo->iobase2 = sio_ldn_readw(sc, ldn, 0x62);
+ dinfo->irq = sio_ldn_readw(sc, ldn, 0x70);
+ dinfo->dma = sio_ldn_readw(sc, ldn, 0x74);
+ sio_conf_exit(sc);
+ STAILQ_INSERT_TAIL(&sc->devlist, dinfo, link);
+}
+
+static int
+superio_attach(device_t dev)
+{
+ struct siosc *sc = device_get_softc(dev);
+ int i;
+
+ mtx_init(&sc->conf_lock, device_get_nameunit(dev), "superio", MTX_DEF);
+ STAILQ_INIT(&sc->devlist);
+
+ for (i = 0; sc->known_devices[i].type != SUPERIO_DEV_NONE; i++) {
+ superio_add_known_child(dev, sc->known_devices[i].type,
+ sc->known_devices[i].ldn);
+ }
+
+ bus_generic_probe(dev);
+ bus_generic_attach(dev);
+ return (0);
+}
+
+static int
+superio_detach(device_t dev)
+{
+ struct siosc *sc = device_get_softc(dev);
+ int error;
+
+ error = bus_generic_detach(dev);
+ if (error != 0)
+ return (error);
+ device_delete_children(dev);
+ bus_release_resource(dev, SYS_RES_IOPORT, sc->io_rid, sc->io_res);
+ mtx_destroy(&sc->conf_lock);
+ return (0);
+}
+
+static device_t
+superio_add_child(device_t dev, u_int order, const char *name, int unit)
+{
+ struct superio_devinfo *dinfo;
+ device_t child;
+
+ child = device_add_child_ordered(dev, order, name, unit);
+ if (child == NULL)
+ return (NULL);
+ dinfo = malloc(sizeof(*dinfo), M_DEVBUF, M_NOWAIT | M_ZERO);
+ if (dinfo == NULL) {
+ device_delete_child(dev, child);
+ return (NULL);
+ }
+ dinfo->ldn = 0xff;
+ dinfo->type = SUPERIO_DEV_NONE;
+ dinfo->dev = child;
+ resource_list_init(&dinfo->resources);
+ device_set_ivars(child, dinfo);
+ return (child);
+}
+
+static int
+superio_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
+{
+ struct superio_devinfo *dinfo;
+
+ dinfo = device_get_ivars(child);
+ switch (which) {
+ case SUPERIO_IVAR_LDN:
+ *result = dinfo->ldn;
+ break;
+ case SUPERIO_IVAR_TYPE:
+ *result = dinfo->type;
+ break;
+ case SUPERIO_IVAR_IOBASE:
+ *result = dinfo->iobase;
+ break;
+ case SUPERIO_IVAR_IOBASE2:
+ *result = dinfo->iobase2;
+ break;
+ case SUPERIO_IVAR_IRQ:
+ *result = dinfo->irq;
+ break;
+ case SUPERIO_IVAR_DMA:
+ *result = dinfo->dma;
+ break;
+ default:
+ return (ENOENT);
+ }
+ return (0);
+}
+
+static int
+superio_write_ivar(device_t dev, device_t child, int which, uintptr_t value)
+{
+
+ switch (which) {
+ case SUPERIO_IVAR_LDN:
+ case SUPERIO_IVAR_TYPE:
+ case SUPERIO_IVAR_IOBASE:
+ case SUPERIO_IVAR_IOBASE2:
+ case SUPERIO_IVAR_IRQ:
+ case SUPERIO_IVAR_DMA:
+ return (EINVAL);
+ default:
+ return (ENOENT);
+ }
+}
+
+static struct resource_list *
+superio_get_resource_list(device_t dev, device_t child)
+{
+ struct superio_devinfo *dinfo = device_get_ivars(child);
+
+ return (&dinfo->resources);
+}
+
+static int
+superio_printf(struct superio_devinfo *dinfo, const char *fmt, ...)
+{
+ va_list ap;
+ int retval;
+
+ retval = printf("superio:%s@ldn%0x2x: ",
+ devtype_to_str(dinfo->type), dinfo->ldn);
+ va_start(ap, fmt);
+ retval += vprintf(fmt, ap);
+ va_end(ap);
+ return (retval);
+}
+
+static void
+superio_child_detached(device_t dev, device_t child)
+{
+ struct superio_devinfo *dinfo;
+ struct resource_list *rl;
+
+ dinfo = device_get_ivars(child);
+ rl = &dinfo->resources;
+
+ if (resource_list_release_active(rl, dev, child, SYS_RES_IRQ) != 0)
+ superio_printf(dinfo, "Device leaked IRQ resources\n");
+ if (resource_list_release_active(rl, dev, child, SYS_RES_MEMORY) != 0)
+ superio_printf(dinfo, "Device leaked memory resources\n");
+ if (resource_list_release_active(rl, dev, child, SYS_RES_IOPORT) != 0)
+ superio_printf(dinfo, "Device leaked I/O resources\n");
+}
+
+static int
+superio_child_location_str(device_t parent, device_t child, char *buf,
+ size_t buflen)
+{
+ uint8_t ldn;
+
+ ldn = superio_get_ldn(child);
+ snprintf(buf, buflen, "ldn=0x%02x", ldn);
+ return (0);
+}
+
+static int
+superio_child_pnp_str(device_t parent, device_t child, char *buf,
+ size_t buflen)
+{
+ superio_dev_type_t type;
+
+ type = superio_get_type(child);
+ snprintf(buf, buflen, "type=%s", devtype_to_str(type));
+ return (0);
+}
+
+static int
+superio_print_child(device_t parent, device_t child)
+{
+ superio_dev_type_t type;
+ uint8_t ldn;
+ int retval;
+
+ ldn = superio_get_ldn(child);
+ type = superio_get_type(child);
+
+ retval = bus_print_child_header(parent, child);
+ retval += printf(" at %s ldn 0x%02x", devtype_to_str(type), ldn);
+ retval += bus_print_child_footer(parent, child);
+
+ return (retval);
+}
+
+superio_vendor_t
+superio_vendor(device_t dev)
+{
+ device_t sio_dev = device_get_parent(dev);
+ struct siosc *sc = device_get_softc(sio_dev);
+
+ return (sc->vendor);
+}
+
+uint16_t
+superio_devid(device_t dev)
+{
+ device_t sio_dev = device_get_parent(dev);
+ struct siosc *sc = device_get_softc(sio_dev);
+
+ return (sc->devid);
+}
+
+uint8_t
+superio_revid(device_t dev)
+{
+ device_t sio_dev = device_get_parent(dev);
+ struct siosc *sc = device_get_softc(sio_dev);
+
+ return (sc->revid);
+}
+
+uint8_t
+superio_read(device_t dev, uint8_t reg)
+{
+ device_t sio_dev = device_get_parent(dev);
+ struct siosc *sc = device_get_softc(sio_dev);
+ struct superio_devinfo *dinfo = device_get_ivars(dev);
+ uint8_t v;
+
+ sio_conf_enter(sc);
+ v = sio_ldn_read(sc, dinfo->ldn, reg);
+ sio_conf_exit(sc);
+ return (v);
+}
+
+void
+superio_write(device_t dev, uint8_t reg, uint8_t val)
+{
+ device_t sio_dev = device_get_parent(dev);
+ struct siosc *sc = device_get_softc(sio_dev);
+ struct superio_devinfo *dinfo = device_get_ivars(dev);
+
+ sio_conf_enter(sc);
+ sio_ldn_write(sc, dinfo->ldn, reg, val);
+ sio_conf_exit(sc);
+}
+
+bool
+superio_dev_enabled(device_t dev, uint8_t mask)
+{
+ device_t sio_dev = device_get_parent(dev);
+ struct siosc *sc = device_get_softc(sio_dev);
+ struct superio_devinfo *dinfo = device_get_ivars(dev);
+ uint8_t v;
+
+ /* GPIO device is always active in ITE chips. */
+ if (sc->vendor == SUPERIO_VENDOR_ITE && dinfo->ldn == 7)
+ return (true);
+
+ v = superio_read(dev, sc->enable_reg);
+ return ((v & mask) != 0);
+}
+
+void
+superio_dev_enable(device_t dev, uint8_t mask)
+{
+ device_t sio_dev = device_get_parent(dev);
+ struct siosc *sc = device_get_softc(sio_dev);
+ struct superio_devinfo *dinfo = device_get_ivars(dev);
+ uint8_t v;
+
+ /* GPIO device is always active in ITE chips. */
+ if (sc->vendor == SUPERIO_VENDOR_ITE && dinfo->ldn == 7)
+ return;
+
+ sio_conf_enter(sc);
+ v = sio_ldn_read(sc, dinfo->ldn, sc->enable_reg);
+ v |= mask;
+ sio_ldn_write(sc, dinfo->ldn, sc->enable_reg, v);
+ sio_conf_exit(sc);
+}
+
+void
+superio_dev_disable(device_t dev, uint8_t mask)
+{
+ device_t sio_dev = device_get_parent(dev);
+ struct siosc *sc = device_get_softc(sio_dev);
+ struct superio_devinfo *dinfo = device_get_ivars(dev);
+ uint8_t v;
+
+ /* GPIO device is always active in ITE chips. */
+ if (sc->vendor == SUPERIO_VENDOR_ITE && dinfo->ldn == 7)
+ return;
+
+ sio_conf_enter(sc);
+ v = sio_ldn_read(sc, dinfo->ldn, sc->enable_reg);
+ v &= ~mask;
+ sio_ldn_write(sc, dinfo->ldn, sc->enable_reg, v);
+ sio_conf_exit(sc);
+}
+
+device_t
+superio_find_dev(device_t superio, superio_dev_type_t type, int ldn)
+{
+ struct siosc *sc = device_get_softc(superio);
+ struct superio_devinfo *dinfo;
+
+ if (ldn < -1 || ldn > UINT8_MAX)
+ return (NULL); /* ERANGE */
+ if (type == SUPERIO_DEV_NONE && ldn == -1)
+ return (NULL); /* EINVAL */
+
+ STAILQ_FOREACH(dinfo, &sc->devlist, link) {
+ if (ldn != -1 && dinfo->ldn != ldn)
+ continue;
+ if (type != SUPERIO_DEV_NONE && dinfo->type != type)
+ continue;
+ return (dinfo->dev);
+ }
+ return (NULL);
+}
+
+static devclass_t superio_devclass;
+
+static device_method_t superio_methods[] = {
+ DEVMETHOD(device_identify, superio_identify),
+ DEVMETHOD(device_probe, superio_probe),
+ DEVMETHOD(device_attach, superio_attach),
+ DEVMETHOD(device_detach, superio_detach),
+ DEVMETHOD(device_shutdown, bus_generic_shutdown),
+ DEVMETHOD(device_suspend, bus_generic_suspend),
+ DEVMETHOD(device_resume, bus_generic_resume),
+
+ DEVMETHOD(bus_add_child, superio_add_child),
+ DEVMETHOD(bus_child_detached, superio_child_detached),
+ DEVMETHOD(bus_child_location_str, superio_child_location_str),
+ DEVMETHOD(bus_child_pnpinfo_str, superio_child_pnp_str),
+ DEVMETHOD(bus_print_child, superio_print_child),
+ DEVMETHOD(bus_read_ivar, superio_read_ivar),
+ DEVMETHOD(bus_write_ivar, superio_write_ivar),
+ DEVMETHOD(bus_get_resource_list, superio_get_resource_list),
+ DEVMETHOD(bus_alloc_resource, bus_generic_rl_alloc_resource),
+ DEVMETHOD(bus_release_resource, bus_generic_rl_release_resource),
+ DEVMETHOD(bus_set_resource, bus_generic_rl_set_resource),
+ DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
+ DEVMETHOD(bus_delete_resource, bus_generic_rl_delete_resource),
+ DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
+ DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
+ DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
+ DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
+
+ DEVMETHOD_END
+};
+
+static driver_t superio_driver = {
+ "superio",
+ superio_methods,
+ sizeof(struct siosc)
+};
+
+DRIVER_MODULE(superio, isa, superio_driver, superio_devclass, 0, 0);
+MODULE_VERSION(superio, 1);
diff --git a/sys/dev/superio/superio.h b/sys/dev/superio/superio.h
new file mode 100644
index 000000000000..3248941bfc51
--- /dev/null
+++ b/sys/dev/superio/superio.h
@@ -0,0 +1,79 @@
+/*
+ * Copyright (c) 2016 Andriy Gapon
+ *
+ * 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 AUTHOR 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 AUTHOR 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.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef SUPERIO_H
+#define SUPERIO_H
+
+typedef enum superio_vendor {
+ SUPERIO_VENDOR_NONE,
+ SUPERIO_VENDOR_ITE,
+ SUPERIO_VENDOR_NUVOTON,
+ SUPERIO_VENDOR_MAX
+} superio_vendor_t;
+
+typedef enum superio_dev_type {
+ SUPERIO_DEV_NONE,
+ SUPERIO_DEV_HWM,
+ SUPERIO_DEV_WDT,
+ SUPERIO_DEV_GPIO,
+ SUPERIO_DEV_MAX
+} superio_dev_type_t;
+
+superio_vendor_t superio_vendor(device_t dev);
+uint16_t superio_devid(device_t dev);
+uint8_t superio_revid(device_t dev);
+uint8_t superio_read(device_t dev, uint8_t reg);
+void superio_write(device_t dev, uint8_t reg, uint8_t val);
+bool superio_dev_enabled(device_t dev, uint8_t mask);
+void superio_dev_enable(device_t dev, uint8_t mask);
+void superio_dev_disable(device_t dev, uint8_t mask);
+
+device_t superio_find_dev(device_t superio, superio_dev_type_t type,
+ int ldn);
+
+enum superio_ivars {
+ SUPERIO_IVAR_LDN = 10600,
+ SUPERIO_IVAR_TYPE,
+ SUPERIO_IVAR_IOBASE,
+ SUPERIO_IVAR_IOBASE2,
+ SUPERIO_IVAR_IRQ,
+ SUPERIO_IVAR_DMA
+};
+
+#define SUPERIO_ACCESSOR(var, ivar, type) \
+ __BUS_ACCESSOR(superio, var, SUPERIO, ivar, type)
+
+SUPERIO_ACCESSOR(ldn, LDN, uint8_t)
+SUPERIO_ACCESSOR(type, TYPE, superio_dev_type_t)
+SUPERIO_ACCESSOR(iobase, IOBASE, uint16_t)
+SUPERIO_ACCESSOR(iobase2, IOBASE2, uint16_t)
+SUPERIO_ACCESSOR(irq, IRQ, uint8_t)
+SUPERIO_ACCESSOR(dma, DMA, uint8_t)
+
+#undef SUPERIO_ACCESSOR
+
+#endif /*SUPERIO_H*/
diff --git a/sys/i386/conf/NOTES b/sys/i386/conf/NOTES
index 33d5296a51c8..bd14a50f2739 100644
--- a/sys/i386/conf/NOTES
+++ b/sys/i386/conf/NOTES
@@ -838,6 +838,11 @@ device amdtemp
device cpuctl
#
+# SuperIO driver.
+#
+device superio
+
+#
# System Management Bus (SMB)
#
options ENABLE_ALART # Control alarm on Intel intpm driver
diff --git a/sys/modules/Makefile b/sys/modules/Makefile
index 876a13f19ea9..ae8d83650027 100644
--- a/sys/modules/Makefile
+++ b/sys/modules/Makefile
@@ -344,6 +344,7 @@ SUBDIR= \
${_sppp} \
ste \
stge \
+ ${_superio} \
${_sym} \
${_syscons} \
sysvipc \
@@ -668,6 +669,7 @@ _rdrand_rng= rdrand_rng
.endif
_s3= s3
_sdhci_acpi= sdhci_acpi
+_superio= superio
_tpm= tpm
_twa= twa
_vesa= vesa
diff --git a/sys/modules/superio/Makefile b/sys/modules/superio/Makefile
new file mode 100644
index 000000000000..86585a45cc25
--- /dev/null
+++ b/sys/modules/superio/Makefile
@@ -0,0 +1,9 @@
+# $FreeBSD$
+
+.PATH: ${.CURDIR}/../../dev/superio
+
+KMOD= superio
+SRCS= superio.c
+SRCS+= device_if.h bus_if.h isa_if.h
+
+.include <bsd.kmod.mk>