1 files changed, 861 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/qib/qib_sysfs.c b/drivers/infiniband/hw/qib/qib_sysfs.c
new file mode 100644
index 000000000..021df0654
--- /dev/null
+++ b/drivers/infiniband/hw/qib/qib_sysfs.c
@@ -0,0 +1,861 @@
+/*
+ * Copyright (c) 2012 Intel Corporation.  All rights reserved.
+ * Copyright (c) 2006 - 2012 QLogic Corporation. All rights reserved.
+ * Copyright (c) 2006 PathScale, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *
+ *      - 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.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#include <linux/ctype.h>
+
+#include "qib.h"
+#include "qib_mad.h"
+
+/* start of per-port functions */
+/*
+ * Get/Set heartbeat enable. OR of 1=enabled, 2=auto
+ */
+static ssize_t show_hrtbt_enb(struct qib_pportdata *ppd, char *buf)
+{
+	struct qib_devdata *dd = ppd->dd;
+	int ret;
+
+	ret = dd->f_get_ib_cfg(ppd, QIB_IB_CFG_HRTBT);
+	ret = scnprintf(buf, PAGE_SIZE, "%d\n", ret);
+	return ret;
+}
+
+static ssize_t store_hrtbt_enb(struct qib_pportdata *ppd, const char *buf,
+			       size_t count)
+{
+	struct qib_devdata *dd = ppd->dd;
+	int ret;
+	u16 val;
+
+	ret = kstrtou16(buf, 0, &val);
+	if (ret) {
+		qib_dev_err(dd, "attempt to set invalid Heartbeat enable\n");
+		return ret;
+	}
+
+	/*
+	 * Set the "intentional" heartbeat enable per either of
+	 * "Enable" and "Auto", as these are normally set together.
+	 * This bit is consulted when leaving loopback mode,
+	 * because entering loopback mode overrides it and automatically
+	 * disables heartbeat.
+	 */
+	ret = dd->f_set_ib_cfg(ppd, QIB_IB_CFG_HRTBT, val);
+	return ret < 0 ? ret : count;
+}
+
+static ssize_t store_loopback(struct qib_pportdata *ppd, const char *buf,
+			      size_t count)
+{
+	struct qib_devdata *dd = ppd->dd;
+	int ret = count, r;
+
+	r = dd->f_set_ib_loopback(ppd, buf);
+	if (r < 0)
+		ret = r;
+
+	return ret;
+}
+
+static ssize_t store_led_override(struct qib_pportdata *ppd, const char *buf,
+				  size_t count)
+{
+	struct qib_devdata *dd = ppd->dd;
+	int ret;
+	u16 val;
+
+	ret = kstrtou16(buf, 0, &val);
+	if (ret) {
+		qib_dev_err(dd, "attempt to set invalid LED override\n");
+		return ret;
+	}
+
+	qib_set_led_override(ppd, val);
+	return count;
+}
+
+static ssize_t show_status(struct qib_pportdata *ppd, char *buf)
+{
+	ssize_t ret;
+
+	if (!ppd->statusp)
+		ret = -EINVAL;
+	else
+		ret = scnprintf(buf, PAGE_SIZE, "0x%llx\n",
+				(unsigned long long) *(ppd->statusp));
+	return ret;
+}
+
+/*
+ * For userland compatibility, these offsets must remain fixed.
+ * They are strings for QIB_STATUS_*
+ */
+static const char * const qib_status_str[] = {
+	"Initted",
+	"",
+	"",
+	"",
+	"",
+	"Present",
+	"IB_link_up",
+	"IB_configured",
+	"",
+	"Fatal_Hardware_Error",
+	NULL,
+};
+
+static ssize_t show_status_str(struct qib_pportdata *ppd, char *buf)
+{
+	int i, any;
+	u64 s;
+	ssize_t ret;
+
+	if (!ppd->statusp) {
+		ret = -EINVAL;
+		goto bail;
+	}
+
+	s = *(ppd->statusp);
+	*buf = '\0';
+	for (any = i = 0; s && qib_status_str[i]; i++) {
+		if (s & 1) {
+			/* if overflow */
+			if (any && strlcat(buf, " ", PAGE_SIZE) >= PAGE_SIZE)
+				break;
+			if (strlcat(buf, qib_status_str[i], PAGE_SIZE) >=
+					PAGE_SIZE)
+				break;
+			any = 1;
+		}
+		s >>= 1;
+	}
+	if (any)
+		strlcat(buf, "\n", PAGE_SIZE);
+
+	ret = strlen(buf);
+
+bail:
+	return ret;
+}
+
+/* end of per-port functions */
+
+/*
+ * Start of per-port file structures and support code
+ * Because we are fitting into other infrastructure, we have to supply the
+ * full set of kobject/sysfs_ops structures and routines.
+ */
+#define QIB_PORT_ATTR(name, mode, show, store) \
+	static struct qib_port_attr qib_port_attr_##name = \
+		__ATTR(name, mode, show, store)
+
+struct qib_port_attr {
+	struct attribute attr;
+	ssize_t (*show)(struct qib_pportdata *, char *);
+	ssize_t (*store)(struct qib_pportdata *, const char *, size_t);
+};
+
+QIB_PORT_ATTR(loopback, S_IWUSR, NULL, store_loopback);
+QIB_PORT_ATTR(led_override, S_IWUSR, NULL, store_led_override);
+QIB_PORT_ATTR(hrtbt_enable, S_IWUSR | S_IRUGO, show_hrtbt_enb,
+	      store_hrtbt_enb);
+QIB_PORT_ATTR(status, S_IRUGO, show_status, NULL);
+QIB_PORT_ATTR(status_str, S_IRUGO, show_status_str, NULL);
+
+static struct attribute *port_default_attributes[] = {
+	&qib_port_attr_loopback.attr,
+	&qib_port_attr_led_override.attr,
+	&qib_port_attr_hrtbt_enable.attr,
+	&qib_port_attr_status.attr,
+	&qib_port_attr_status_str.attr,
+	NULL
+};
+
+/*
+ * Start of per-port congestion control structures and support code
+ */
+
+/*
+ * Congestion control table size followed by table entries
+ */
+static ssize_t read_cc_table_bin(struct file *filp, struct kobject *kobj,
+		struct bin_attribute *bin_attr,
+		char *buf, loff_t pos, size_t count)
+{
+	int ret;
+	struct qib_pportdata *ppd =
+		container_of(kobj, struct qib_pportdata, pport_cc_kobj);
+
+	if (!qib_cc_table_size || !ppd->ccti_entries_shadow)
+		return -EINVAL;
+
+	ret = ppd->total_cct_entry * sizeof(struct ib_cc_table_entry_shadow)
+		 + sizeof(__be16);
+
+	if (pos > ret)
+		return -EINVAL;
+
+	if (count > ret - pos)
+		count = ret - pos;
+
+	if (!count)
+		return count;
+
+	spin_lock(&ppd->cc_shadow_lock);
+	memcpy(buf, ppd->ccti_entries_shadow, count);
+	spin_unlock(&ppd->cc_shadow_lock);
+
+	return count;
+}
+
+static void qib_port_release(struct kobject *kobj)
+{
+	/* nothing to do since memory is freed by qib_free_devdata() */
+}
+
+static struct kobj_type qib_port_cc_ktype = {
+	.release = qib_port_release,
+};
+
+static const struct bin_attribute cc_table_bin_attr = {
+	.attr = {.name = "cc_table_bin", .mode = 0444},
+	.read = read_cc_table_bin,
+	.size = PAGE_SIZE,
+};
+
+/*
+ * Congestion settings: port control, control map and an array of 16
+ * entries for the congestion entries - increase, timer, event log
+ * trigger threshold and the minimum injection rate delay.
+ */
+static ssize_t read_cc_setting_bin(struct file *filp, struct kobject *kobj,
+		struct bin_attribute *bin_attr,
+		char *buf, loff_t pos, size_t count)
+{
+	int ret;
+	struct qib_pportdata *ppd =
+		container_of(kobj, struct qib_pportdata, pport_cc_kobj);
+
+	if (!qib_cc_table_size || !ppd->congestion_entries_shadow)
+		return -EINVAL;
+
+	ret = sizeof(struct ib_cc_congestion_setting_attr_shadow);
+
+	if (pos > ret)
+		return -EINVAL;
+	if (count > ret - pos)
+		count = ret - pos;
+
+	if (!count)
+		return count;
+
+	spin_lock(&ppd->cc_shadow_lock);
+	memcpy(buf, ppd->congestion_entries_shadow, count);
+	spin_unlock(&ppd->cc_shadow_lock);
+
+	return count;
+}
+
+static const struct bin_attribute cc_setting_bin_attr = {
+	.attr = {.name = "cc_settings_bin", .mode = 0444},
+	.read = read_cc_setting_bin,
+	.size = PAGE_SIZE,
+};
+
+
+static ssize_t qib_portattr_show(struct kobject *kobj,
+	struct attribute *attr, char *buf)
+{
+	struct qib_port_attr *pattr =
+		container_of(attr, struct qib_port_attr, attr);
+	struct qib_pportdata *ppd =
+		container_of(kobj, struct qib_pportdata, pport_kobj);
+
+	if (!pattr->show)
+		return -EIO;
+
+	return pattr->show(ppd, buf);
+}
+
+static ssize_t qib_portattr_store(struct kobject *kobj,
+	struct attribute *attr, const char *buf, size_t len)
+{
+	struct qib_port_attr *pattr =
+		container_of(attr, struct qib_port_attr, attr);
+	struct qib_pportdata *ppd =
+		container_of(kobj, struct qib_pportdata, pport_kobj);
+
+	if (!pattr->store)
+		return -EIO;
+
+	return pattr->store(ppd, buf, len);
+}
+
+
+static const struct sysfs_ops qib_port_ops = {
+	.show = qib_portattr_show,
+	.store = qib_portattr_store,
+};
+
+static struct kobj_type qib_port_ktype = {
+	.release = qib_port_release,
+	.sysfs_ops = &qib_port_ops,
+	.default_attrs = port_default_attributes
+};
+
+/* Start sl2vl */
+
+#define QIB_SL2VL_ATTR(N) \
+	static struct qib_sl2vl_attr qib_sl2vl_attr_##N = { \
+		.attr = { .name = __stringify(N), .mode = 0444 }, \
+		.sl = N \
+	}
+
+struct qib_sl2vl_attr {
+	struct attribute attr;
+	int sl;
+};
+
+QIB_SL2VL_ATTR(0);
+QIB_SL2VL_ATTR(1);
+QIB_SL2VL_ATTR(2);
+QIB_SL2VL_ATTR(3);
+QIB_SL2VL_ATTR(4);
+QIB_SL2VL_ATTR(5);
+QIB_SL2VL_ATTR(6);
+QIB_SL2VL_ATTR(7);
+QIB_SL2VL_ATTR(8);
+QIB_SL2VL_ATTR(9);
+QIB_SL2VL_ATTR(10);
+QIB_SL2VL_ATTR(11);
+QIB_SL2VL_ATTR(12);
+QIB_SL2VL_ATTR(13);
+QIB_SL2VL_ATTR(14);
+QIB_SL2VL_ATTR(15);
+
+static struct attribute *sl2vl_default_attributes[] = {
+	&qib_sl2vl_attr_0.attr,
+	&qib_sl2vl_attr_1.attr,
+	&qib_sl2vl_attr_2.attr,
+	&qib_sl2vl_attr_3.attr,
+	&qib_sl2vl_attr_4.attr,
+	&qib_sl2vl_attr_5.attr,
+	&qib_sl2vl_attr_6.attr,
+	&qib_sl2vl_attr_7.attr,
+	&qib_sl2vl_attr_8.attr,
+	&qib_sl2vl_attr_9.attr,
+	&qib_sl2vl_attr_10.attr,
+	&qib_sl2vl_attr_11.attr,
+	&qib_sl2vl_attr_12.attr,
+	&qib_sl2vl_attr_13.attr,
+	&qib_sl2vl_attr_14.attr,
+	&qib_sl2vl_attr_15.attr,
+	NULL
+};
+
+static ssize_t sl2vl_attr_show(struct kobject *kobj, struct attribute *attr,
+			       char *buf)
+{
+	struct qib_sl2vl_attr *sattr =
+		container_of(attr, struct qib_sl2vl_attr, attr);
+	struct qib_pportdata *ppd =
+		container_of(kobj, struct qib_pportdata, sl2vl_kobj);
+	struct qib_ibport *qibp = &ppd->ibport_data;
+
+	return sprintf(buf, "%u\n", qibp->sl_to_vl[sattr->sl]);
+}
+
+static const struct sysfs_ops qib_sl2vl_ops = {
+	.show = sl2vl_attr_show,
+};
+
+static struct kobj_type qib_sl2vl_ktype = {
+	.release = qib_port_release,
+	.sysfs_ops = &qib_sl2vl_ops,
+	.default_attrs = sl2vl_default_attributes
+};
+
+/* End sl2vl */
+
+/* Start diag_counters */
+
+#define QIB_DIAGC_ATTR(N) \
+	static struct qib_diagc_attr qib_diagc_attr_##N = { \
+		.attr = { .name = __stringify(N), .mode = 0664 }, \
+		.counter = offsetof(struct qib_ibport, rvp.n_##N) \
+	}
+
+#define QIB_DIAGC_ATTR_PER_CPU(N) \
+	static struct qib_diagc_attr qib_diagc_attr_##N = { \
+		.attr = { .name = __stringify(N), .mode = 0664 }, \
+		.counter = offsetof(struct qib_ibport, rvp.z_##N) \
+	}
+
+struct qib_diagc_attr {
+	struct attribute attr;
+	size_t counter;
+};
+
+QIB_DIAGC_ATTR_PER_CPU(rc_acks);
+QIB_DIAGC_ATTR_PER_CPU(rc_qacks);
+QIB_DIAGC_ATTR_PER_CPU(rc_delayed_comp);
+
+QIB_DIAGC_ATTR(rc_resends);
+QIB_DIAGC_ATTR(seq_naks);
+QIB_DIAGC_ATTR(rdma_seq);
+QIB_DIAGC_ATTR(rnr_naks);
+QIB_DIAGC_ATTR(other_naks);
+QIB_DIAGC_ATTR(rc_timeouts);
+QIB_DIAGC_ATTR(loop_pkts);
+QIB_DIAGC_ATTR(pkt_drops);
+QIB_DIAGC_ATTR(dmawait);
+QIB_DIAGC_ATTR(unaligned);
+QIB_DIAGC_ATTR(rc_dupreq);
+QIB_DIAGC_ATTR(rc_seqnak);
+QIB_DIAGC_ATTR(rc_crwaits);
+
+static struct attribute *diagc_default_attributes[] = {
+	&qib_diagc_attr_rc_resends.attr,
+	&qib_diagc_attr_rc_acks.attr,
+	&qib_diagc_attr_rc_qacks.attr,
+	&qib_diagc_attr_rc_delayed_comp.attr,
+	&qib_diagc_attr_seq_naks.attr,
+	&qib_diagc_attr_rdma_seq.attr,
+	&qib_diagc_attr_rnr_naks.attr,
+	&qib_diagc_attr_other_naks.attr,
+	&qib_diagc_attr_rc_timeouts.attr,
+	&qib_diagc_attr_loop_pkts.attr,
+	&qib_diagc_attr_pkt_drops.attr,
+	&qib_diagc_attr_dmawait.attr,
+	&qib_diagc_attr_unaligned.attr,
+	&qib_diagc_attr_rc_dupreq.attr,
+	&qib_diagc_attr_rc_seqnak.attr,
+	&qib_diagc_attr_rc_crwaits.attr,
+	NULL
+};
+
+static u64 get_all_cpu_total(u64 __percpu *cntr)
+{
+	int cpu;
+	u64 counter = 0;
+
+	for_each_possible_cpu(cpu)
+		counter += *per_cpu_ptr(cntr, cpu);
+	return counter;
+}
+
+#define def_write_per_cpu(cntr) \
+static void write_per_cpu_##cntr(struct qib_pportdata *ppd, u32 data)	\
+{									\
+	struct qib_devdata *dd = ppd->dd;				\
+	struct qib_ibport *qibp = &ppd->ibport_data;			\
+	/*  A write can only zero the counter */			\
+	if (data == 0)							\
+		qibp->rvp.z_##cntr = get_all_cpu_total(qibp->rvp.cntr); \
+	else								\
+		qib_dev_err(dd, "Per CPU cntrs can only be zeroed");	\
+}
+
+def_write_per_cpu(rc_acks)
+def_write_per_cpu(rc_qacks)
+def_write_per_cpu(rc_delayed_comp)
+
+#define READ_PER_CPU_CNTR(cntr) (get_all_cpu_total(qibp->rvp.cntr) - \
+							qibp->rvp.z_##cntr)
+
+static ssize_t diagc_attr_show(struct kobject *kobj, struct attribute *attr,
+			       char *buf)
+{
+	struct qib_diagc_attr *dattr =
+		container_of(attr, struct qib_diagc_attr, attr);
+	struct qib_pportdata *ppd =
+		container_of(kobj, struct qib_pportdata, diagc_kobj);
+	struct qib_ibport *qibp = &ppd->ibport_data;
+
+	if (!strncmp(dattr->attr.name, "rc_acks", 7))
+		return sprintf(buf, "%llu\n", READ_PER_CPU_CNTR(rc_acks));
+	else if (!strncmp(dattr->attr.name, "rc_qacks", 8))
+		return sprintf(buf, "%llu\n", READ_PER_CPU_CNTR(rc_qacks));
+	else if (!strncmp(dattr->attr.name, "rc_delayed_comp", 15))
+		return sprintf(buf, "%llu\n",
+					READ_PER_CPU_CNTR(rc_delayed_comp));
+	else
+		return sprintf(buf, "%u\n",
+				*(u32 *)((char *)qibp + dattr->counter));
+}
+
+static ssize_t diagc_attr_store(struct kobject *kobj, struct attribute *attr,
+				const char *buf, size_t size)
+{
+	struct qib_diagc_attr *dattr =
+		container_of(attr, struct qib_diagc_attr, attr);
+	struct qib_pportdata *ppd =
+		container_of(kobj, struct qib_pportdata, diagc_kobj);
+	struct qib_ibport *qibp = &ppd->ibport_data;
+	u32 val;
+	int ret;
+
+	ret = kstrtou32(buf, 0, &val);
+	if (ret)
+		return ret;
+
+	if (!strncmp(dattr->attr.name, "rc_acks", 7))
+		write_per_cpu_rc_acks(ppd, val);
+	else if (!strncmp(dattr->attr.name, "rc_qacks", 8))
+		write_per_cpu_rc_qacks(ppd, val);
+	else if (!strncmp(dattr->attr.name, "rc_delayed_comp", 15))
+		write_per_cpu_rc_delayed_comp(ppd, val);
+	else
+		*(u32 *)((char *)qibp + dattr->counter) = val;
+	return size;
+}
+
+static const struct sysfs_ops qib_diagc_ops = {
+	.show = diagc_attr_show,
+	.store = diagc_attr_store,
+};
+
+static struct kobj_type qib_diagc_ktype = {
+	.release = qib_port_release,
+	.sysfs_ops = &qib_diagc_ops,
+	.default_attrs = diagc_default_attributes
+};
+
+/* End diag_counters */
+
+/* end of per-port file structures and support code */
+
+/*
+ * Start of per-unit (or driver, in some cases, but replicated
+ * per unit) functions (these get a device *)
+ */
+static ssize_t hw_rev_show(struct device *device, struct device_attribute *attr,
+			   char *buf)
+{
+	struct qib_ibdev *dev =
+		rdma_device_to_drv_device(device, struct qib_ibdev, rdi.ibdev);
+
+	return sprintf(buf, "%x\n", dd_from_dev(dev)->minrev);
+}
+static DEVICE_ATTR_RO(hw_rev);
+
+static ssize_t hca_type_show(struct device *device,
+			     struct device_attribute *attr, char *buf)
+{
+	struct qib_ibdev *dev =
+		rdma_device_to_drv_device(device, struct qib_ibdev, rdi.ibdev);
+	struct qib_devdata *dd = dd_from_dev(dev);
+	int ret;
+
+	if (!dd->boardname)
+		ret = -EINVAL;
+	else
+		ret = scnprintf(buf, PAGE_SIZE, "%s\n", dd->boardname);
+	return ret;
+}
+static DEVICE_ATTR_RO(hca_type);
+static DEVICE_ATTR(board_id, 0444, hca_type_show, NULL);
+
+static ssize_t version_show(struct device *device,
+			    struct device_attribute *attr, char *buf)
+{
+	/* The string printed here is already newline-terminated. */
+	return scnprintf(buf, PAGE_SIZE, "%s", (char *)ib_qib_version);
+}
+static DEVICE_ATTR_RO(version);
+
+static ssize_t boardversion_show(struct device *device,
+				 struct device_attribute *attr, char *buf)
+{
+	struct qib_ibdev *dev =
+		rdma_device_to_drv_device(device, struct qib_ibdev, rdi.ibdev);
+	struct qib_devdata *dd = dd_from_dev(dev);
+
+	/* The string printed here is already newline-terminated. */
+	return scnprintf(buf, PAGE_SIZE, "%s", dd->boardversion);
+}
+static DEVICE_ATTR_RO(boardversion);
+
+static ssize_t localbus_info_show(struct device *device,
+				  struct device_attribute *attr, char *buf)
+{
+	struct qib_ibdev *dev =
+		rdma_device_to_drv_device(device, struct qib_ibdev, rdi.ibdev);
+	struct qib_devdata *dd = dd_from_dev(dev);
+
+	/* The string printed here is already newline-terminated. */
+	return scnprintf(buf, PAGE_SIZE, "%s", dd->lbus_info);
+}
+static DEVICE_ATTR_RO(localbus_info);
+
+static ssize_t nctxts_show(struct device *device,
+			   struct device_attribute *attr, char *buf)
+{
+	struct qib_ibdev *dev =
+		rdma_device_to_drv_device(device, struct qib_ibdev, rdi.ibdev);
+	struct qib_devdata *dd = dd_from_dev(dev);
+
+	/* Return the number of user ports (contexts) available. */
+	/* The calculation below deals with a special case where
+	 * cfgctxts is set to 1 on a single-port board. */
+	return scnprintf(buf, PAGE_SIZE, "%u\n",
+			(dd->first_user_ctxt > dd->cfgctxts) ? 0 :
+			(dd->cfgctxts - dd->first_user_ctxt));
+}
+static DEVICE_ATTR_RO(nctxts);
+
+static ssize_t nfreectxts_show(struct device *device,
+			       struct device_attribute *attr, char *buf)
+{
+	struct qib_ibdev *dev =
+		rdma_device_to_drv_device(device, struct qib_ibdev, rdi.ibdev);
+	struct qib_devdata *dd = dd_from_dev(dev);
+
+	/* Return the number of free user ports (contexts) available. */
+	return scnprintf(buf, PAGE_SIZE, "%u\n", dd->freectxts);
+}
+static DEVICE_ATTR_RO(nfreectxts);
+
+static ssize_t serial_show(struct device *device,
+			   struct device_attribute *attr, char *buf)
+{
+	struct qib_ibdev *dev =
+		rdma_device_to_drv_device(device, struct qib_ibdev, rdi.ibdev);
+	struct qib_devdata *dd = dd_from_dev(dev);
+
+	buf[sizeof(dd->serial)] = '\0';
+	memcpy(buf, dd->serial, sizeof(dd->serial));
+	strcat(buf, "\n");
+	return strlen(buf);
+}
+static DEVICE_ATTR_RO(serial);
+
+static ssize_t chip_reset_store(struct device *device,
+				struct device_attribute *attr, const char *buf,
+				size_t count)
+{
+	struct qib_ibdev *dev =
+		rdma_device_to_drv_device(device, struct qib_ibdev, rdi.ibdev);
+	struct qib_devdata *dd = dd_from_dev(dev);
+	int ret;
+
+	if (count < 5 || memcmp(buf, "reset", 5) || !dd->diag_client) {
+		ret = -EINVAL;
+		goto bail;
+	}
+
+	ret = qib_reset_device(dd->unit);
+bail:
+	return ret < 0 ? ret : count;
+}
+static DEVICE_ATTR_WO(chip_reset);
+
+/*
+ * Dump tempsense regs. in decimal, to ease shell-scripts.
+ */
+static ssize_t tempsense_show(struct device *device,
+			      struct device_attribute *attr, char *buf)
+{
+	struct qib_ibdev *dev =
+		rdma_device_to_drv_device(device, struct qib_ibdev, rdi.ibdev);
+	struct qib_devdata *dd = dd_from_dev(dev);
+	int ret;
+	int idx;
+	u8 regvals[8];
+
+	ret = -ENXIO;
+	for (idx = 0; idx < 8; ++idx) {
+		if (idx == 6)
+			continue;
+		ret = dd->f_tempsense_rd(dd, idx);
+		if (ret < 0)
+			break;
+		regvals[idx] = ret;
+	}
+	if (idx == 8)
+		ret = scnprintf(buf, PAGE_SIZE, "%d %d %02X %02X %d %d\n",
+				*(signed char *)(regvals),
+				*(signed char *)(regvals + 1),
+				regvals[2], regvals[3],
+				*(signed char *)(regvals + 5),
+				*(signed char *)(regvals + 7));
+	return ret;
+}
+static DEVICE_ATTR_RO(tempsense);
+
+/*
+ * end of per-unit (or driver, in some cases, but replicated
+ * per unit) functions
+ */
+
+/* start of per-unit file structures and support code */
+static struct attribute *qib_attributes[] = {
+	&dev_attr_hw_rev.attr,
+	&dev_attr_hca_type.attr,
+	&dev_attr_board_id.attr,
+	&dev_attr_version.attr,
+	&dev_attr_nctxts.attr,
+	&dev_attr_nfreectxts.attr,
+	&dev_attr_serial.attr,
+	&dev_attr_boardversion.attr,
+	&dev_attr_tempsense.attr,
+	&dev_attr_localbus_info.attr,
+	&dev_attr_chip_reset.attr,
+	NULL,
+};
+
+const struct attribute_group qib_attr_group = {
+	.attrs = qib_attributes,
+};
+
+int qib_create_port_files(struct ib_device *ibdev, u8 port_num,
+			  struct kobject *kobj)
+{
+	struct qib_pportdata *ppd;
+	struct qib_devdata *dd = dd_from_ibdev(ibdev);
+	int ret;
+
+	if (!port_num || port_num > dd->num_pports) {
+		qib_dev_err(dd,
+			"Skipping infiniband class with invalid port %u\n",
+			port_num);
+		ret = -ENODEV;
+		goto bail;
+	}
+	ppd = &dd->pport[port_num - 1];
+
+	ret = kobject_init_and_add(&ppd->pport_kobj, &qib_port_ktype, kobj,
+				   "linkcontrol");
+	if (ret) {
+		qib_dev_err(dd,
+			"Skipping linkcontrol sysfs info, (err %d) port %u\n",
+			ret, port_num);
+		goto bail_link;
+	}
+	kobject_uevent(&ppd->pport_kobj, KOBJ_ADD);
+
+	ret = kobject_init_and_add(&ppd->sl2vl_kobj, &qib_sl2vl_ktype, kobj,
+				   "sl2vl");
+	if (ret) {
+		qib_dev_err(dd,
+			"Skipping sl2vl sysfs info, (err %d) port %u\n",
+			ret, port_num);
+		goto bail_sl;
+	}
+	kobject_uevent(&ppd->sl2vl_kobj, KOBJ_ADD);
+
+	ret = kobject_init_and_add(&ppd->diagc_kobj, &qib_diagc_ktype, kobj,
+				   "diag_counters");
+	if (ret) {
+		qib_dev_err(dd,
+			"Skipping diag_counters sysfs info, (err %d) port %u\n",
+			ret, port_num);
+		goto bail_diagc;
+	}
+	kobject_uevent(&ppd->diagc_kobj, KOBJ_ADD);
+
+	if (!qib_cc_table_size || !ppd->congestion_entries_shadow)
+		return 0;
+
+	ret = kobject_init_and_add(&ppd->pport_cc_kobj, &qib_port_cc_ktype,
+				kobj, "CCMgtA");
+	if (ret) {
+		qib_dev_err(dd,
+		 "Skipping Congestion Control sysfs info, (err %d) port %u\n",
+		 ret, port_num);
+		goto bail_cc;
+	}
+
+	kobject_uevent(&ppd->pport_cc_kobj, KOBJ_ADD);
+
+	ret = sysfs_create_bin_file(&ppd->pport_cc_kobj,
+				&cc_setting_bin_attr);
+	if (ret) {
+		qib_dev_err(dd,
+		 "Skipping Congestion Control setting sysfs info, (err %d) port %u\n",
+		 ret, port_num);
+		goto bail_cc;
+	}
+
+	ret = sysfs_create_bin_file(&ppd->pport_cc_kobj,
+				&cc_table_bin_attr);
+	if (ret) {
+		qib_dev_err(dd,
+		 "Skipping Congestion Control table sysfs info, (err %d) port %u\n",
+		 ret, port_num);
+		goto bail_cc_entry_bin;
+	}
+
+	qib_devinfo(dd->pcidev,
+		"IB%u: Congestion Control Agent enabled for port %d\n",
+		dd->unit, port_num);
+
+	return 0;
+
+bail_cc_entry_bin:
+	sysfs_remove_bin_file(&ppd->pport_cc_kobj, &cc_setting_bin_attr);
+bail_cc:
+	kobject_put(&ppd->pport_cc_kobj);
+bail_diagc:
+	kobject_put(&ppd->diagc_kobj);
+bail_sl:
+	kobject_put(&ppd->sl2vl_kobj);
+bail_link:
+	kobject_put(&ppd->pport_kobj);
+bail:
+	return ret;
+}
+
+/*
+ * Unregister and remove our files in /sys/class/infiniband.
+ */
+void qib_verbs_unregister_sysfs(struct qib_devdata *dd)
+{
+	struct qib_pportdata *ppd;
+	int i;
+
+	for (i = 0; i < dd->num_pports; i++) {
+		ppd = &dd->pport[i];
+		if (qib_cc_table_size &&
+			ppd->congestion_entries_shadow) {
+			sysfs_remove_bin_file(&ppd->pport_cc_kobj,
+				&cc_setting_bin_attr);
+			sysfs_remove_bin_file(&ppd->pport_cc_kobj,
+				&cc_table_bin_attr);
+			kobject_put(&ppd->pport_cc_kobj);
+		}
+		kobject_put(&ppd->diagc_kobj);
+		kobject_put(&ppd->sl2vl_kobj);
+		kobject_put(&ppd->pport_kobj);
+	}
+}