svn commit: r330240 - in head/sys: conf powerpc/conf powerpc/powernv
Wojciech Macek
wma at FreeBSD.org
Thu Mar 1 14:11:09 UTC 2018
Author: wma
Date: Thu Mar 1 14:11:07 2018
New Revision: 330240
URL: https://svnweb.freebsd.org/changeset/base/330240
Log:
PowerNV: Initial support for OPAL I2C transfers
Add I2C OPAL driver and a set of dummy-ones to allow
all I2C things on Power8 to attach.
TODO: better async token management
Submitted by: Wojciech Macek <wma at semihalf.com>
Obtained from: Semihalf
Sponsored by: IBM, QCM Technologies
Added:
head/sys/powerpc/powernv/opal_i2c.c (contents, props changed)
head/sys/powerpc/powernv/opal_i2cm.c (contents, props changed)
head/sys/powerpc/powernv/powernv_centaur.c (contents, props changed)
head/sys/powerpc/powernv/powernv_xscom.c (contents, props changed)
Modified:
head/sys/conf/files.powerpc
head/sys/powerpc/conf/GENERIC64
head/sys/powerpc/powernv/opal.h
Modified: head/sys/conf/files.powerpc
==============================================================================
--- head/sys/conf/files.powerpc Thu Mar 1 13:52:18 2018 (r330239)
+++ head/sys/conf/files.powerpc Thu Mar 1 14:11:07 2018 (r330240)
@@ -186,9 +186,13 @@ powerpc/powermac/vcoregpio.c optional powermac
powerpc/powernv/opal.c optional powernv
powerpc/powernv/opal_console.c optional powernv
powerpc/powernv/opal_dev.c optional powernv
+powerpc/powernv/opal_i2c.c optional iicbus fdt powernv
+powerpc/powernv/opal_i2cm.c optional iicbus fdt powernv
powerpc/powernv/opal_pci.c optional powernv pci
powerpc/powernv/opalcall.S optional powernv
powerpc/powernv/platform_powernv.c optional powernv
+powerpc/powernv/powernv_centaur.c optional powernv
+powerpc/powernv/powernv_xscom.c optional powernv
powerpc/powerpc/altivec.c optional powerpc | powerpc64
powerpc/powerpc/autoconf.c standard
powerpc/powerpc/bcopy.c standard
Modified: head/sys/powerpc/conf/GENERIC64
==============================================================================
--- head/sys/powerpc/conf/GENERIC64 Thu Mar 1 13:52:18 2018 (r330239)
+++ head/sys/powerpc/conf/GENERIC64 Thu Mar 1 14:11:07 2018 (r330240)
@@ -206,6 +206,7 @@ device fwe # Ethernet over FireWire (non-standard!)
# Misc
device iicbus # I2C bus code
+device iic
device kiic # Keywest I2C
device ad7417 # PowerMac7,2 temperature sensor
device ds1631 # PowerMac11,2 temperature sensor
Modified: head/sys/powerpc/powernv/opal.h
==============================================================================
--- head/sys/powerpc/powernv/opal.h Thu Mar 1 13:52:18 2018 (r330239)
+++ head/sys/powerpc/powernv/opal.h Thu Mar 1 14:11:07 2018 (r330240)
@@ -71,15 +71,37 @@ int opal_call(uint64_t token, ...);
#define OPAL_PCI_MAP_PE_DMA_WINDOW_REAL 45
#define OPAL_RETURN_CPU 69
#define OPAL_REINIT_CPUS 70
+#define OPAL_CHECK_ASYNC_COMPLETION 86
+#define OPAL_I2C_REQUEST 109
#define OPAL_PCI_TCE_KILL 126
/* For OPAL_PCI_SET_PE */
#define OPAL_UNMAP_PE 0
#define OPAL_MAP_PE 1
-#define OPAL_SUCCESS 0
-#define OPAL_PARAMETER -1
-#define OPAL_CLOSED -5
+#define OPAL_SUCCESS 0
+#define OPAL_PARAMETER -1
+#define OPAL_BUSY -2
+#define OPAL_CLOSED -5
#define OPAL_BUSY_EVENT -12
+#define OPAL_ASYNC_COMPLETION -15
+
+struct opal_msg {
+ uint32_t msg_type;
+ uint32_t reserved;
+ uint64_t params[8];
+};
+
+enum opal_msg_type {
+ OPAL_MSG_ASYNC_COMP = 0,
+ OPAL_MSG_MEM_ERR = 1,
+ OPAL_MSG_EPOW = 2,
+ OPAL_MSG_SHUTDOWN = 3,
+ OPAL_MSG_HMI_EVT = 4,
+ OPAL_MSG_DPO = 5,
+ OPAL_MSG_PRD = 6,
+ OPAL_MSG_OCC = 7,
+ OPAL_MSG_TYPE_MAX,
+};
#endif
Added: head/sys/powerpc/powernv/opal_i2c.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/powerpc/powernv/opal_i2c.c Thu Mar 1 14:11:07 2018 (r330240)
@@ -0,0 +1,252 @@
+/*-
+ * Copyright (c) 2017-2018 QCM Technologies.
+ * Copyright (c) 2017-2018 Semihalf.
+ * 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.
+ *
+ * $FreeBSD$
+ */
+
+#include "opt_platform.h"
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/endian.h>
+#include <sys/systm.h>
+#include <sys/bus.h>
+#include <sys/conf.h>
+#include <sys/kernel.h>
+#include <sys/lock.h>
+#include <sys/mbuf.h>
+#include <sys/malloc.h>
+#include <sys/module.h>
+#include <sys/mutex.h>
+#include <sys/rman.h>
+#include <machine/bus.h>
+
+#include <vm/vm.h>
+#include <vm/pmap.h>
+
+#include <dev/iicbus/iiconf.h>
+#include <dev/iicbus/iicbus.h>
+#include "iicbus_if.h"
+
+#include "opal.h"
+
+#ifdef FDT
+#include <dev/ofw/ofw_bus.h>
+#include <dev/ofw/ofw_bus_subr.h>
+#endif
+
+struct opal_i2c_softc
+{
+ device_t dev;
+ device_t iicbus;
+ uint32_t opal_id;
+ struct mtx sc_mtx;
+};
+
+/* OPAL I2C request */
+struct opal_i2c_request {
+ uint8_t type;
+#define OPAL_I2C_RAW_READ 0
+#define OPAL_I2C_RAW_WRITE 1
+#define OPAL_I2C_SM_READ 2
+#define OPAL_I2C_SM_WRITE 3
+ uint8_t flags;
+ uint8_t subaddr_sz; /* Max 4 */
+ uint8_t reserved;
+ uint16_t addr; /* 7 or 10 bit address */
+ uint16_t reserved2;
+ uint32_t subaddr; /* Sub-address if any */
+ uint32_t size; /* Data size */
+ uint64_t buffer_pa; /* Buffer real address */
+};
+
+static int opal_i2c_attach(device_t);
+static int opal_i2c_callback(device_t, int, caddr_t);
+static int opal_i2c_probe(device_t);
+static int opal_i2c_transfer(device_t, struct iic_msg *, uint32_t);
+static int i2c_opal_send_request(uint32_t, struct opal_i2c_request *);
+
+static device_method_t opal_i2c_methods[] = {
+ /* Device interface */
+ DEVMETHOD(device_probe, opal_i2c_probe),
+ DEVMETHOD(device_attach, opal_i2c_attach),
+
+ /* iicbus interface */
+ DEVMETHOD(iicbus_callback, opal_i2c_callback),
+ DEVMETHOD(iicbus_transfer, opal_i2c_transfer),
+ DEVMETHOD_END
+};
+
+#define I2C_LOCK(_sc) mtx_lock(&(_sc)->sc_mtx)
+#define I2C_UNLOCK(_sc) mtx_unlock(&(_sc)->sc_mtx)
+#define I2C_LOCK_INIT(_sc) \
+ mtx_init(&_sc->sc_mtx, device_get_nameunit(_sc->dev), \
+ "i2c", MTX_DEF)
+
+static devclass_t opal_i2c_devclass;
+
+static driver_t opal_i2c_driver = {
+ "i2c",
+ opal_i2c_methods,
+ sizeof(struct opal_i2c_softc),
+};
+
+static int
+opal_i2c_probe(device_t dev)
+{
+
+ if (!(ofw_bus_is_compatible(dev, "ibm,opal-i2c")))
+ return (ENXIO);
+
+ device_set_desc(dev, "opal-i2c");
+
+ return (0);
+}
+
+static int
+opal_i2c_attach(device_t dev)
+{
+ struct opal_i2c_softc *sc;
+ int len;
+
+ sc = device_get_softc(dev);
+ sc->dev = dev;
+
+ len = OF_getproplen(ofw_bus_get_node(dev), "ibm,opal-id");
+ if (len <= 0)
+ return (EINVAL);
+ OF_getencprop(ofw_bus_get_node(dev), "ibm,opal-id", &sc->opal_id, len);
+
+ if ((sc->iicbus = device_add_child(dev, "iicbus", -1)) == NULL) {
+ device_printf(dev, "could not allocate iicbus instance\n");
+ return (EINVAL);
+ }
+
+ I2C_LOCK_INIT(sc);
+
+ return (bus_generic_attach(dev));
+}
+
+static int
+opal_get_async_rc(struct opal_msg msg)
+{
+ if (msg.msg_type != OPAL_MSG_ASYNC_COMP)
+ return OPAL_PARAMETER;
+ else
+ return htobe64(msg.params[1]);
+}
+
+static int
+i2c_opal_send_request(uint32_t bus_id, struct opal_i2c_request *req)
+{
+ struct opal_msg msg;
+ int token, rc;
+
+ /*
+ * XXX:
+ * Async tokens should be managed globally. Since there is
+ * only one place now, use hardcoded value.
+ */
+ token = 0x112233;
+
+ memset(&msg, 0, sizeof(msg));
+
+ rc = opal_call(OPAL_I2C_REQUEST, token, bus_id,
+ pmap_kextract((uint64_t)req));
+ if (rc != OPAL_ASYNC_COMPLETION)
+ return (rc);
+
+ do {
+ rc = opal_call(OPAL_CHECK_ASYNC_COMPLETION,
+ pmap_kextract((uint64_t)&msg), sizeof(msg), token);
+ } while (rc == OPAL_BUSY);
+
+ if (rc != OPAL_SUCCESS)
+ return (rc);
+
+ rc = opal_get_async_rc(msg);
+
+ return rc;
+}
+
+static int
+opal_i2c_transfer(device_t dev, struct iic_msg *msgs, uint32_t nmsgs)
+{
+ struct opal_i2c_softc *sc;
+ int i, err = 0;
+ struct opal_i2c_request req;
+
+ sc = device_get_softc(dev);
+
+ memset(&req, 0, sizeof(req));
+
+ /* XXX: Currently OPAL can parse only 1 message */
+ if (nmsgs > 1) {
+ device_printf(dev,
+ "trying to parse %d messages, while only 1 is supported\n", nmsgs);
+ return (ENOMEM);
+ }
+
+ I2C_LOCK(sc);
+ for (i = 0; i < nmsgs; i++) {
+ req.type = (msgs[i].flags & IIC_M_RD) ?
+ OPAL_I2C_RAW_READ : OPAL_I2C_RAW_WRITE;
+ req.addr = htobe16(msgs[0].slave);
+ req.size = htobe32(msgs[0].len);
+ req.buffer_pa = htobe64(pmap_kextract((uint64_t)msgs[0].buf));
+
+ err = i2c_opal_send_request(sc->opal_id, &req);
+ }
+ I2C_UNLOCK(sc);
+
+ return (err);
+}
+
+static int
+opal_i2c_callback(device_t dev, int index, caddr_t data)
+{
+ int error = 0;
+
+ switch (index) {
+ case IIC_REQUEST_BUS:
+ break;
+
+ case IIC_RELEASE_BUS:
+ break;
+
+ default:
+ error = EINVAL;
+ }
+
+ return (error);
+}
+
+DRIVER_MODULE(opal_i2c, opal_i2cm, opal_i2c_driver, opal_i2c_devclass, NULL,
+ NULL);
+DRIVER_MODULE(iicbus, opal_i2c, iicbus_driver, iicbus_devclass, NULL, NULL);
+MODULE_DEPEND(opal_i2c, iicbus, 1, 1, 1);
Added: head/sys/powerpc/powernv/opal_i2cm.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/powerpc/powernv/opal_i2cm.c Thu Mar 1 14:11:07 2018 (r330240)
@@ -0,0 +1,133 @@
+/*-
+ * Copyright (c) 2017-2018 QCM Technologies.
+ * Copyright (c) 2017-2018 Semihalf.
+ * 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.
+ *
+ * $FreeBSD$
+ */
+
+#include "opt_platform.h"
+
+#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/mbuf.h>
+#include <sys/malloc.h>
+#include <sys/module.h>
+#include <sys/mutex.h>
+#include <sys/rman.h>
+#include <machine/bus.h>
+
+#ifdef FDT
+#include <dev/ofw/ofw_bus.h>
+#include <dev/ofw/ofw_bus_subr.h>
+#endif
+
+struct opal_i2cm_softc
+{
+
+};
+
+static int opal_i2cm_attach(device_t);
+static int opal_i2cm_probe(device_t);
+static const struct ofw_bus_devinfo *
+ opal_i2cm_get_devinfo(device_t, device_t);
+
+static device_method_t opal_i2cm_methods[] = {
+ /* Device interface */
+ DEVMETHOD(device_probe, opal_i2cm_probe),
+ DEVMETHOD(device_attach, opal_i2cm_attach),
+
+ /* ofw_bus interface */
+ DEVMETHOD(ofw_bus_get_devinfo, opal_i2cm_get_devinfo),
+ DEVMETHOD(ofw_bus_get_compat, ofw_bus_gen_get_compat),
+ DEVMETHOD(ofw_bus_get_model, ofw_bus_gen_get_model),
+ DEVMETHOD(ofw_bus_get_name, ofw_bus_gen_get_name),
+ DEVMETHOD(ofw_bus_get_node, ofw_bus_gen_get_node),
+ DEVMETHOD(ofw_bus_get_type, ofw_bus_gen_get_type),
+
+ DEVMETHOD_END
+};
+
+static devclass_t opal_i2cm_devclass;
+
+static int
+opal_i2cm_probe(device_t dev)
+{
+
+ if (!(ofw_bus_is_compatible(dev, "ibm,centaur-i2cm") ||
+ ofw_bus_is_compatible(dev, "ibm,power8-i2cm")))
+ return (ENXIO);
+
+ device_set_desc(dev, "centaur-i2cm");
+ return (0);
+}
+
+static int
+opal_i2cm_attach(device_t dev)
+{
+ phandle_t child;
+ device_t cdev;
+ struct ofw_bus_devinfo *dinfo;
+
+ for (child = OF_child(ofw_bus_get_node(dev)); child != 0;
+ child = OF_peer(child)) {
+ dinfo = malloc(sizeof(*dinfo), M_DEVBUF, M_WAITOK | M_ZERO);
+ if (ofw_bus_gen_setup_devinfo(dinfo, child) != 0) {
+ free(dinfo, M_DEVBUF);
+ continue;
+ }
+ cdev = device_add_child(dev, NULL, -1);
+ if (cdev == NULL) {
+ device_printf(dev, "<%s>: device_add_child failed\n",
+ dinfo->obd_name);
+ ofw_bus_gen_destroy_devinfo(dinfo);
+ free(dinfo, M_DEVBUF);
+ continue;
+ }
+ device_set_ivars(cdev, dinfo);
+ }
+
+ return (bus_generic_attach(dev));
+}
+
+static const struct ofw_bus_devinfo *
+opal_i2cm_get_devinfo(device_t dev, device_t child)
+{
+ return (device_get_ivars(child));
+}
+
+DEFINE_CLASS_0(opal_i2cm, opal_i2cm_driver, opal_i2cm_methods,
+ sizeof(struct opal_i2cm_softc));
+DRIVER_MODULE(opal_i2cm, powernv_xscom, opal_i2cm_driver, opal_i2cm_devclass, NULL,
+ NULL);
+DRIVER_MODULE(opal_i2cm, powernv_centaur, opal_i2cm_driver, opal_i2cm_devclass, NULL,
+ NULL);
+
Added: head/sys/powerpc/powernv/powernv_centaur.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/powerpc/powernv/powernv_centaur.c Thu Mar 1 14:11:07 2018 (r330240)
@@ -0,0 +1,130 @@
+/*-
+ * Copyright (c) 2017-2018 QCM Technologies.
+ * Copyright (c) 2017-2018 Semihalf.
+ * 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.
+ *
+ * $FreeBSD$
+ */
+
+#include "opt_platform.h"
+
+#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/mbuf.h>
+#include <sys/malloc.h>
+#include <sys/module.h>
+#include <sys/mutex.h>
+#include <sys/rman.h>
+#include <machine/bus.h>
+
+#ifdef FDT
+#include <dev/ofw/ofw_bus.h>
+#include <dev/ofw/ofw_bus_subr.h>
+#endif
+
+struct powernv_centaur_softc
+{
+
+};
+
+static int powernv_centaur_attach(device_t);
+static int powernv_centaur_probe(device_t);
+static const struct ofw_bus_devinfo *
+ powernv_centaur_get_devinfo(device_t, device_t);
+
+static device_method_t powernv_centaur_methods[] = {
+ /* Device interface */
+ DEVMETHOD(device_probe, powernv_centaur_probe),
+ DEVMETHOD(device_attach, powernv_centaur_attach),
+
+ /* ofw_bus interface */
+ DEVMETHOD(ofw_bus_get_devinfo, powernv_centaur_get_devinfo),
+ DEVMETHOD(ofw_bus_get_compat, ofw_bus_gen_get_compat),
+ DEVMETHOD(ofw_bus_get_model, ofw_bus_gen_get_model),
+ DEVMETHOD(ofw_bus_get_name, ofw_bus_gen_get_name),
+ DEVMETHOD(ofw_bus_get_node, ofw_bus_gen_get_node),
+ DEVMETHOD(ofw_bus_get_type, ofw_bus_gen_get_type),
+
+ DEVMETHOD_END
+};
+
+static devclass_t powernv_centaur_devclass;
+
+static int
+powernv_centaur_probe(device_t dev)
+{
+
+ if (!(ofw_bus_is_compatible(dev, "ibm,centaur")))
+ return (ENXIO);
+
+ device_set_desc(dev, "centaur");
+ return (0);
+}
+
+static int
+powernv_centaur_attach(device_t dev)
+{
+ phandle_t child;
+ device_t cdev;
+ struct ofw_bus_devinfo *dinfo;
+
+ for (child = OF_child(ofw_bus_get_node(dev)); child != 0;
+ child = OF_peer(child)) {
+ dinfo = malloc(sizeof(*dinfo), M_DEVBUF, M_WAITOK | M_ZERO);
+ if (ofw_bus_gen_setup_devinfo(dinfo, child) != 0) {
+ free(dinfo, M_DEVBUF);
+ continue;
+ }
+ cdev = device_add_child(dev, NULL, -1);
+ if (cdev == NULL) {
+ device_printf(dev, "<%s>: device_add_child failed\n",
+ dinfo->obd_name);
+ ofw_bus_gen_destroy_devinfo(dinfo);
+ free(dinfo, M_DEVBUF);
+ continue;
+ }
+ device_set_ivars(cdev, dinfo);
+ }
+
+ return (bus_generic_attach(dev));
+}
+
+static const struct ofw_bus_devinfo *
+powernv_centaur_get_devinfo(device_t dev, device_t child)
+{
+ return (device_get_ivars(child));
+}
+
+DEFINE_CLASS_0(powernv_centaur, powernv_centaur_driver, powernv_centaur_methods,
+ sizeof(struct powernv_centaur_softc));
+DRIVER_MODULE(powernv_centaur, ofwbus, powernv_centaur_driver, powernv_centaur_devclass, NULL,
+ NULL);
+
Added: head/sys/powerpc/powernv/powernv_xscom.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/powerpc/powernv/powernv_xscom.c Thu Mar 1 14:11:07 2018 (r330240)
@@ -0,0 +1,130 @@
+/*-
+ * Copyright (c) 2017-2018 QCM Technologies.
+ * Copyright (c) 2017-2018 Semihalf.
+ * 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.
+ *
+ * $FreeBSD$
+ */
+
+#include "opt_platform.h"
+
+#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/mbuf.h>
+#include <sys/malloc.h>
+#include <sys/module.h>
+#include <sys/mutex.h>
+#include <sys/rman.h>
+#include <machine/bus.h>
+
+#ifdef FDT
+#include <dev/ofw/ofw_bus.h>
+#include <dev/ofw/ofw_bus_subr.h>
+#endif
+
+struct powernv_xscom_softc
+{
+
+};
+
+static int powernv_xscom_attach(device_t);
+static int powernv_xscom_probe(device_t);
+static const struct ofw_bus_devinfo *
+ powernv_xscom_get_devinfo(device_t, device_t);
+
+static device_method_t powernv_xscom_methods[] = {
+ /* Device interface */
+ DEVMETHOD(device_probe, powernv_xscom_probe),
+ DEVMETHOD(device_attach, powernv_xscom_attach),
+
+ /* ofw_bus interface */
+ DEVMETHOD(ofw_bus_get_devinfo, powernv_xscom_get_devinfo),
+ DEVMETHOD(ofw_bus_get_compat, ofw_bus_gen_get_compat),
+ DEVMETHOD(ofw_bus_get_model, ofw_bus_gen_get_model),
+ DEVMETHOD(ofw_bus_get_name, ofw_bus_gen_get_name),
+ DEVMETHOD(ofw_bus_get_node, ofw_bus_gen_get_node),
+ DEVMETHOD(ofw_bus_get_type, ofw_bus_gen_get_type),
+
+ DEVMETHOD_END
+};
+
+static devclass_t powernv_xscom_devclass;
+
+static int
+powernv_xscom_probe(device_t dev)
+{
+
+ if (!(ofw_bus_is_compatible(dev, "ibm,xscom")))
+ return (ENXIO);
+
+ device_set_desc(dev, "xscom");
+ return (0);
+}
+
+static int
+powernv_xscom_attach(device_t dev)
+{
+ phandle_t child;
+ device_t cdev;
+ struct ofw_bus_devinfo *dinfo;
+
+ for (child = OF_child(ofw_bus_get_node(dev)); child != 0;
+ child = OF_peer(child)) {
+ dinfo = malloc(sizeof(*dinfo), M_DEVBUF, M_WAITOK | M_ZERO);
+ if (ofw_bus_gen_setup_devinfo(dinfo, child) != 0) {
+ free(dinfo, M_DEVBUF);
+ continue;
+ }
+ cdev = device_add_child(dev, NULL, -1);
+ if (cdev == NULL) {
+ device_printf(dev, "<%s>: device_add_child failed\n",
+ dinfo->obd_name);
+ ofw_bus_gen_destroy_devinfo(dinfo);
+ free(dinfo, M_DEVBUF);
+ continue;
+ }
+ device_set_ivars(cdev, dinfo);
+ }
+
+ return (bus_generic_attach(dev));
+}
+
+static const struct ofw_bus_devinfo *
+powernv_xscom_get_devinfo(device_t dev, device_t child)
+{
+ return (device_get_ivars(child));
+}
+
+DEFINE_CLASS_0(powernv_xscom, powernv_xscom_driver, powernv_xscom_methods,
+ sizeof(struct powernv_xscom_softc));
+DRIVER_MODULE(powernv_xscom, ofwbus, powernv_xscom_driver, powernv_xscom_devclass, NULL,
+ NULL);
+
More information about the svn-src-all
mailing list