[PATCH v2 39/49] IB/hfi1: add sysfs routines

[Mike Marciniszyn <mike.marciniszyn-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>]

Signed-off-by: Andrew Friedley <andrew.friedley-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Arthur Kepner <arthur.kepner-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Brendan Cunningham <brendan.cunningham-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Brian Welty <brian.welty-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Caz Yokoyama <caz.yokoyama-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Dean Luick <dean.luick-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Easwar Hariharan <easwar.hariharan-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Harish Chegondi <harish.chegondi-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Ira Weiny <ira.weiny-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Jim Snow <jim.m.snow-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: John Gregor <john.a.gregor-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Jubin John <jubin.john-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Kaike Wan <kaike.wan-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Kevin Pine <kevin.pine-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Kyle Liddell <kyle.liddell-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Mitko Haralanov <mitko.haralanov-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Ravi Krishnaswamy <ravi.krishnaswamy-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Sadanand Warrier <sadanand.warrier-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Sanath Kumar <sanath.s.kumar-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Sudeep Dutt <sudeep.dutt-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Vlad Danushevsky <vladimir.danusevsky-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
---
 drivers/infiniband/hw/hfi1/sysfs.c | 1083 ++++++++++++++++++++++++++++++++++++
 1 file changed, 1083 insertions(+)
 create mode 100644 drivers/infiniband/hw/hfi1/sysfs.c

diff --git a/drivers/infiniband/hw/hfi1/sysfs.c b/drivers/infiniband/hw/hfi1/sysfs.c
new file mode 100644
index 0000000..fdedb20
--- /dev/null
+++ b/drivers/infiniband/hw/hfi1/sysfs.c
@@ -0,0 +1,1083 @@
+/*
+ *
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2015 Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2015 Intel Corporation.
+ *
+ * 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.
+ *  - Neither the name of Intel Corporation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT
+ * OWNER 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 <linux/ctype.h>
+
+#include "hfi.h"
+#include "mad.h"
+#include "trace.h"
+
+/* start of per-port functions */
+/*
+ * Get/Set heartbeat enable. OR of 1=enabled, 2=auto
+ */
+static ssize_t show_hrtbt_enb(struct hfi1_pportdata *ppd, char *buf)
+{
+	int ret;
+
+	ret = hfi1_get_ib_cfg(ppd, HFI1_IB_CFG_HRTBT);
+	ret = scnprintf(buf, PAGE_SIZE, "%d\n", ret);
+	return ret;
+}
+
+static ssize_t store_hrtbt_enb(struct hfi1_pportdata *ppd, const char *buf,
+			       size_t count)
+{
+	struct hfi1_devdata *dd = ppd->dd;
+	int ret;
+	u16 val;
+
+	ret = kstrtou16(buf, 0, &val);
+	if (ret) {
+		dd_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 = hfi1_set_ib_cfg(ppd, HFI1_IB_CFG_HRTBT, val);
+	return ret < 0 ? ret : count;
+}
+
+static ssize_t store_led_override(struct hfi1_pportdata *ppd, const char *buf,
+				  size_t count)
+{
+	struct hfi1_devdata *dd = ppd->dd;
+	int ret;
+	u16 val;
+
+	ret = kstrtou16(buf, 0, &val);
+	if (ret) {
+		dd_dev_err(dd, "attempt to set invalid LED override\n");
+		return ret;
+	}
+
+	hfi1_set_led_override(ppd, val);
+	return count;
+}
+
+static ssize_t show_status(struct hfi1_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 HFI1_STATUS_*
+ */
+static const char * const hfi1_status_str[] = {
+	"Initted",
+	"",
+	"",
+	"",
+	"",
+	"Present",
+	"IB_link_up",
+	"IB_configured",
+	"",
+	"Fatal_Hardware_Error",
+	NULL,
+};
+
+static ssize_t show_status_str(struct hfi1_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 && hfi1_status_str[i]; i++) {
+		if (s & 1) {
+			/* if overflow */
+			if (any && strlcat(buf, " ", PAGE_SIZE) >= PAGE_SIZE)
+				break;
+			if (strlcat(buf, hfi1_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 HFI1_PORT_ATTR(name, mode, show, store) \
+	static struct hfi1_port_attr port_attr_##name = \
+		__ATTR(name, mode, show, store)
+
+struct hfi1_port_attr {
+	struct attribute attr;
+	ssize_t (*show)(struct hfi1_pportdata *, char *);
+	ssize_t (*store)(struct hfi1_pportdata *, const char *, size_t);
+};
+
+HFI1_PORT_ATTR(led_override, S_IWUSR, NULL, store_led_override);
+HFI1_PORT_ATTR(hrtbt_enable, S_IWUSR | S_IRUGO, show_hrtbt_enb,
+	       store_hrtbt_enb);
+HFI1_PORT_ATTR(status, S_IRUGO, show_status, NULL);
+HFI1_PORT_ATTR(status_str, S_IRUGO, show_status_str, NULL);
+
+static struct attribute *port_default_attributes[] = {
+	&port_attr_led_override.attr,
+	&port_attr_hrtbt_enable.attr,
+	&port_attr_status.attr,
+	&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 hfi1_pportdata *ppd =
+		container_of(kobj, struct hfi1_pportdata, pport_cc_kobj);
+	struct cc_state *cc_state;
+
+	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;
+
+	rcu_read_lock();
+	cc_state = get_cc_state(ppd);
+	if (cc_state == NULL) {
+		rcu_read_unlock();
+		return -EINVAL;
+	}
+	memcpy(buf, &cc_state->cct, count);
+	rcu_read_unlock();
+
+	return count;
+}
+
+static void port_release(struct kobject *kobj)
+{
+	/* nothing to do since memory is freed by hfi1_free_devdata() */
+}
+
+static struct kobj_type port_cc_ktype = {
+	.release = port_release,
+};
+
+static 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 hfi1_pportdata *ppd =
+		container_of(kobj, struct hfi1_pportdata, pport_cc_kobj);
+	struct cc_state *cc_state;
+
+	ret = sizeof(struct opa_congestion_setting_attr_shadow);
+
+	if (pos > ret)
+		return -EINVAL;
+	if (count > ret - pos)
+		count = ret - pos;
+
+	if (!count)
+		return count;
+
+	rcu_read_lock();
+	cc_state = get_cc_state(ppd);
+	if (cc_state == NULL) {
+		rcu_read_unlock();
+		return -EINVAL;
+	}
+	memcpy(buf, &cc_state->cong_setting, count);
+	rcu_read_unlock();
+
+	return count;
+}
+
+static 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 portattr_show(struct kobject *kobj,
+			     struct attribute *attr, char *buf)
+{
+	struct hfi1_port_attr *pattr =
+		container_of(attr, struct hfi1_port_attr, attr);
+	struct hfi1_pportdata *ppd =
+		container_of(kobj, struct hfi1_pportdata, pport_kobj);
+
+	return pattr->show(ppd, buf);
+}
+
+static ssize_t portattr_store(struct kobject *kobj,
+			      struct attribute *attr,
+			      const char *buf, size_t len)
+{
+	struct hfi1_port_attr *pattr =
+		container_of(attr, struct hfi1_port_attr, attr);
+	struct hfi1_pportdata *ppd =
+		container_of(kobj, struct hfi1_pportdata, pport_kobj);
+
+	return pattr->store(ppd, buf, len);
+}
+
+
+static const struct sysfs_ops hfi1_port_ops = {
+	.show = portattr_show,
+	.store = portattr_store,
+};
+
+static struct kobj_type hfi1_port_ktype = {
+	.release = port_release,
+	.sysfs_ops = &hfi1_port_ops,
+	.default_attrs = port_default_attributes
+};
+
+/* Start sc2vl */
+#define HFI1_SC2VL_ATTR(N)				    \
+	static struct hfi1_sc2vl_attr hfi1_sc2vl_attr_##N = { \
+		.attr = { .name = __stringify(N), .mode = 0444 }, \
+		.sc = N \
+	}
+
+struct hfi1_sc2vl_attr {
+	struct attribute attr;
+	int sc;
+};
+
+HFI1_SC2VL_ATTR(0);
+HFI1_SC2VL_ATTR(1);
+HFI1_SC2VL_ATTR(2);
+HFI1_SC2VL_ATTR(3);
+HFI1_SC2VL_ATTR(4);
+HFI1_SC2VL_ATTR(5);
+HFI1_SC2VL_ATTR(6);
+HFI1_SC2VL_ATTR(7);
+HFI1_SC2VL_ATTR(8);
+HFI1_SC2VL_ATTR(9);
+HFI1_SC2VL_ATTR(10);
+HFI1_SC2VL_ATTR(11);
+HFI1_SC2VL_ATTR(12);
+HFI1_SC2VL_ATTR(13);
+HFI1_SC2VL_ATTR(14);
+HFI1_SC2VL_ATTR(15);
+HFI1_SC2VL_ATTR(16);
+HFI1_SC2VL_ATTR(17);
+HFI1_SC2VL_ATTR(18);
+HFI1_SC2VL_ATTR(19);
+HFI1_SC2VL_ATTR(20);
+HFI1_SC2VL_ATTR(21);
+HFI1_SC2VL_ATTR(22);
+HFI1_SC2VL_ATTR(23);
+HFI1_SC2VL_ATTR(24);
+HFI1_SC2VL_ATTR(25);
+HFI1_SC2VL_ATTR(26);
+HFI1_SC2VL_ATTR(27);
+HFI1_SC2VL_ATTR(28);
+HFI1_SC2VL_ATTR(29);
+HFI1_SC2VL_ATTR(30);
+HFI1_SC2VL_ATTR(31);
+
+
+static struct attribute *sc2vl_default_attributes[] = {
+	&hfi1_sc2vl_attr_0.attr,
+	&hfi1_sc2vl_attr_1.attr,
+	&hfi1_sc2vl_attr_2.attr,
+	&hfi1_sc2vl_attr_3.attr,
+	&hfi1_sc2vl_attr_4.attr,
+	&hfi1_sc2vl_attr_5.attr,
+	&hfi1_sc2vl_attr_6.attr,
+	&hfi1_sc2vl_attr_7.attr,
+	&hfi1_sc2vl_attr_8.attr,
+	&hfi1_sc2vl_attr_9.attr,
+	&hfi1_sc2vl_attr_10.attr,
+	&hfi1_sc2vl_attr_11.attr,
+	&hfi1_sc2vl_attr_12.attr,
+	&hfi1_sc2vl_attr_13.attr,
+	&hfi1_sc2vl_attr_14.attr,
+	&hfi1_sc2vl_attr_15.attr,
+	&hfi1_sc2vl_attr_16.attr,
+	&hfi1_sc2vl_attr_17.attr,
+	&hfi1_sc2vl_attr_18.attr,
+	&hfi1_sc2vl_attr_19.attr,
+	&hfi1_sc2vl_attr_20.attr,
+	&hfi1_sc2vl_attr_21.attr,
+	&hfi1_sc2vl_attr_22.attr,
+	&hfi1_sc2vl_attr_23.attr,
+	&hfi1_sc2vl_attr_24.attr,
+	&hfi1_sc2vl_attr_25.attr,
+	&hfi1_sc2vl_attr_26.attr,
+	&hfi1_sc2vl_attr_27.attr,
+	&hfi1_sc2vl_attr_28.attr,
+	&hfi1_sc2vl_attr_29.attr,
+	&hfi1_sc2vl_attr_30.attr,
+	&hfi1_sc2vl_attr_31.attr,
+	NULL
+};
+
+static ssize_t sc2vl_attr_show(struct kobject *kobj, struct attribute *attr,
+			       char *buf)
+{
+	struct hfi1_sc2vl_attr *sattr =
+		container_of(attr, struct hfi1_sc2vl_attr, attr);
+	struct hfi1_pportdata *ppd =
+		container_of(kobj, struct hfi1_pportdata, sc2vl_kobj);
+	struct hfi1_devdata *dd = ppd->dd;
+
+	return sprintf(buf, "%u\n", *((u8 *)dd->sc2vl + sattr->sc));
+}
+
+static const struct sysfs_ops hfi1_sc2vl_ops = {
+	.show = sc2vl_attr_show,
+};
+
+static struct kobj_type hfi1_sc2vl_ktype = {
+	.release = port_release,
+	.sysfs_ops = &hfi1_sc2vl_ops,
+	.default_attrs = sc2vl_default_attributes
+};
+
+/* End sc2vl */
+
+/* Start sl2sc */
+#define HFI1_SL2SC_ATTR(N)				    \
+	static struct hfi1_sl2sc_attr hfi1_sl2sc_attr_##N = {	  \
+		.attr = { .name = __stringify(N), .mode = 0444 }, \
+		.sl = N						  \
+	}
+
+struct hfi1_sl2sc_attr {
+	struct attribute attr;
+	int sl;
+};
+
+HFI1_SL2SC_ATTR(0);
+HFI1_SL2SC_ATTR(1);
+HFI1_SL2SC_ATTR(2);
+HFI1_SL2SC_ATTR(3);
+HFI1_SL2SC_ATTR(4);
+HFI1_SL2SC_ATTR(5);
+HFI1_SL2SC_ATTR(6);
+HFI1_SL2SC_ATTR(7);
+HFI1_SL2SC_ATTR(8);
+HFI1_SL2SC_ATTR(9);
+HFI1_SL2SC_ATTR(10);
+HFI1_SL2SC_ATTR(11);
+HFI1_SL2SC_ATTR(12);
+HFI1_SL2SC_ATTR(13);
+HFI1_SL2SC_ATTR(14);
+HFI1_SL2SC_ATTR(15);
+HFI1_SL2SC_ATTR(16);
+HFI1_SL2SC_ATTR(17);
+HFI1_SL2SC_ATTR(18);
+HFI1_SL2SC_ATTR(19);
+HFI1_SL2SC_ATTR(20);
+HFI1_SL2SC_ATTR(21);
+HFI1_SL2SC_ATTR(22);
+HFI1_SL2SC_ATTR(23);
+HFI1_SL2SC_ATTR(24);
+HFI1_SL2SC_ATTR(25);
+HFI1_SL2SC_ATTR(26);
+HFI1_SL2SC_ATTR(27);
+HFI1_SL2SC_ATTR(28);
+HFI1_SL2SC_ATTR(29);
+HFI1_SL2SC_ATTR(30);
+HFI1_SL2SC_ATTR(31);
+
+
+static struct attribute *sl2sc_default_attributes[] = {
+	&hfi1_sl2sc_attr_0.attr,
+	&hfi1_sl2sc_attr_1.attr,
+	&hfi1_sl2sc_attr_2.attr,
+	&hfi1_sl2sc_attr_3.attr,
+	&hfi1_sl2sc_attr_4.attr,
+	&hfi1_sl2sc_attr_5.attr,
+	&hfi1_sl2sc_attr_6.attr,
+	&hfi1_sl2sc_attr_7.attr,
+	&hfi1_sl2sc_attr_8.attr,
+	&hfi1_sl2sc_attr_9.attr,
+	&hfi1_sl2sc_attr_10.attr,
+	&hfi1_sl2sc_attr_11.attr,
+	&hfi1_sl2sc_attr_12.attr,
+	&hfi1_sl2sc_attr_13.attr,
+	&hfi1_sl2sc_attr_14.attr,
+	&hfi1_sl2sc_attr_15.attr,
+	&hfi1_sl2sc_attr_16.attr,
+	&hfi1_sl2sc_attr_17.attr,
+	&hfi1_sl2sc_attr_18.attr,
+	&hfi1_sl2sc_attr_19.attr,
+	&hfi1_sl2sc_attr_20.attr,
+	&hfi1_sl2sc_attr_21.attr,
+	&hfi1_sl2sc_attr_22.attr,
+	&hfi1_sl2sc_attr_23.attr,
+	&hfi1_sl2sc_attr_24.attr,
+	&hfi1_sl2sc_attr_25.attr,
+	&hfi1_sl2sc_attr_26.attr,
+	&hfi1_sl2sc_attr_27.attr,
+	&hfi1_sl2sc_attr_28.attr,
+	&hfi1_sl2sc_attr_29.attr,
+	&hfi1_sl2sc_attr_30.attr,
+	&hfi1_sl2sc_attr_31.attr,
+	NULL
+};
+
+static ssize_t sl2sc_attr_show(struct kobject *kobj, struct attribute *attr,
+			       char *buf)
+{
+	struct hfi1_sl2sc_attr *sattr =
+		container_of(attr, struct hfi1_sl2sc_attr, attr);
+	struct hfi1_pportdata *ppd =
+		container_of(kobj, struct hfi1_pportdata, sl2sc_kobj);
+	struct hfi1_ibport *ibp = &ppd->ibport_data;
+
+	return sprintf(buf, "%u\n", ibp->sl_to_sc[sattr->sl]);
+}
+
+static const struct sysfs_ops hfi1_sl2sc_ops = {
+	.show = sl2sc_attr_show,
+};
+
+static struct kobj_type hfi1_sl2sc_ktype = {
+	.release = port_release,
+	.sysfs_ops = &hfi1_sl2sc_ops,
+	.default_attrs = sl2sc_default_attributes
+};
+
+/* End sl2sc */
+
+/* Start vl2mtu */
+
+#define HFI1_VL2MTU_ATTR(N) \
+	static struct hfi1_vl2mtu_attr hfi1_vl2mtu_attr_##N = { \
+		.attr = { .name = __stringify(N), .mode = 0444 }, \
+		.vl = N						  \
+	}
+
+struct hfi1_vl2mtu_attr {
+	struct attribute attr;
+	int vl;
+};
+
+HFI1_VL2MTU_ATTR(0);
+HFI1_VL2MTU_ATTR(1);
+HFI1_VL2MTU_ATTR(2);
+HFI1_VL2MTU_ATTR(3);
+HFI1_VL2MTU_ATTR(4);
+HFI1_VL2MTU_ATTR(5);
+HFI1_VL2MTU_ATTR(6);
+HFI1_VL2MTU_ATTR(7);
+HFI1_VL2MTU_ATTR(8);
+HFI1_VL2MTU_ATTR(9);
+HFI1_VL2MTU_ATTR(10);
+HFI1_VL2MTU_ATTR(11);
+HFI1_VL2MTU_ATTR(12);
+HFI1_VL2MTU_ATTR(13);
+HFI1_VL2MTU_ATTR(14);
+HFI1_VL2MTU_ATTR(15);
+
+static struct attribute *vl2mtu_default_attributes[] = {
+	&hfi1_vl2mtu_attr_0.attr,
+	&hfi1_vl2mtu_attr_1.attr,
+	&hfi1_vl2mtu_attr_2.attr,
+	&hfi1_vl2mtu_attr_3.attr,
+	&hfi1_vl2mtu_attr_4.attr,
+	&hfi1_vl2mtu_attr_5.attr,
+	&hfi1_vl2mtu_attr_6.attr,
+	&hfi1_vl2mtu_attr_7.attr,
+	&hfi1_vl2mtu_attr_8.attr,
+	&hfi1_vl2mtu_attr_9.attr,
+	&hfi1_vl2mtu_attr_10.attr,
+	&hfi1_vl2mtu_attr_11.attr,
+	&hfi1_vl2mtu_attr_12.attr,
+	&hfi1_vl2mtu_attr_13.attr,
+	&hfi1_vl2mtu_attr_14.attr,
+	&hfi1_vl2mtu_attr_15.attr,
+	NULL
+};
+
+static ssize_t vl2mtu_attr_show(struct kobject *kobj, struct attribute *attr,
+				char *buf)
+{
+	struct hfi1_vl2mtu_attr *vlattr =
+		container_of(attr, struct hfi1_vl2mtu_attr, attr);
+	struct hfi1_pportdata *ppd =
+		container_of(kobj, struct hfi1_pportdata, vl2mtu_kobj);
+	struct hfi1_devdata *dd = ppd->dd;
+
+	return sprintf(buf, "%u\n", dd->vld[vlattr->vl].mtu);
+}
+
+static const struct sysfs_ops hfi1_vl2mtu_ops = {
+	.show = vl2mtu_attr_show,
+};
+
+static struct kobj_type hfi1_vl2mtu_ktype = {
+	.release = port_release,
+	.sysfs_ops = &hfi1_vl2mtu_ops,
+	.default_attrs = vl2mtu_default_attributes
+};
+
+/* Start diag_counters */
+#define HFI1_DIAGC_NORMAL 0x0
+#define HFI1_DIAGC_PCPU   0x1
+
+#define HFI1_DIAGC_ATTR(N) \
+	static struct hfi1_diagc_attr diagc_attr_##N = { \
+		.attr = { .name = __stringify(N), .mode = 0664 }, \
+		.counter = offsetof(struct hfi1_ibport, n_##N), \
+		.type = HFI1_DIAGC_NORMAL, \
+		.vl = CNTR_INVALID_VL \
+	}
+
+#define HFI1_DIAGC_ATTR_PCPU(N, V, L) \
+	static struct hfi1_diagc_attr diagc_attr_##N = { \
+		.attr = { .name = __stringify(N), .mode = 0664 }, \
+		.counter = V, \
+		.type = HFI1_DIAGC_PCPU, \
+		.vl = L \
+	}
+
+struct hfi1_diagc_attr {
+	struct attribute attr;
+	size_t counter;
+	int type;
+	int vl;
+};
+
+HFI1_DIAGC_ATTR(rc_resends);
+HFI1_DIAGC_ATTR_PCPU(rc_acks, C_SW_CPU_RC_ACKS, CNTR_INVALID_VL);
+HFI1_DIAGC_ATTR_PCPU(rc_qacks, C_SW_CPU_RC_QACKS, CNTR_INVALID_VL);
+HFI1_DIAGC_ATTR_PCPU(rc_delayed_comp, C_SW_CPU_RC_DELAYED_COMP,
+	CNTR_INVALID_VL);
+HFI1_DIAGC_ATTR(seq_naks);
+HFI1_DIAGC_ATTR(rdma_seq);
+HFI1_DIAGC_ATTR(rnr_naks);
+HFI1_DIAGC_ATTR(other_naks);
+HFI1_DIAGC_ATTR(rc_timeouts);
+HFI1_DIAGC_ATTR(loop_pkts);
+HFI1_DIAGC_ATTR(pkt_drops);
+HFI1_DIAGC_ATTR(dmawait);
+HFI1_DIAGC_ATTR(unaligned);
+HFI1_DIAGC_ATTR(rc_dupreq);
+HFI1_DIAGC_ATTR(rc_seqnak);
+
+static struct attribute *diagc_default_attributes[] = {
+	&diagc_attr_rc_resends.attr,
+	&diagc_attr_rc_acks.attr,
+	&diagc_attr_rc_qacks.attr,
+	&diagc_attr_rc_delayed_comp.attr,
+	&diagc_attr_seq_naks.attr,
+	&diagc_attr_rdma_seq.attr,
+	&diagc_attr_rnr_naks.attr,
+	&diagc_attr_other_naks.attr,
+	&diagc_attr_rc_timeouts.attr,
+	&diagc_attr_loop_pkts.attr,
+	&diagc_attr_pkt_drops.attr,
+	&diagc_attr_dmawait.attr,
+	&diagc_attr_unaligned.attr,
+	&diagc_attr_rc_dupreq.attr,
+	&diagc_attr_rc_seqnak.attr,
+	NULL
+};
+
+static ssize_t diagc_attr_show(struct kobject *kobj, struct attribute *attr,
+			       char *buf)
+{
+	struct hfi1_diagc_attr *dattr =
+		container_of(attr, struct hfi1_diagc_attr, attr);
+	struct hfi1_pportdata *ppd =
+		container_of(kobj, struct hfi1_pportdata, diagc_kobj);
+	struct hfi1_ibport *hfip = &ppd->ibport_data;
+
+	switch (dattr->type) {
+	case (HFI1_DIAGC_PCPU):
+		return(sprintf(buf, "%lld\n",
+			read_port_cntr(ppd,
+				       dattr->counter,
+				       dattr->vl)));
+	case (HFI1_DIAGC_NORMAL):
+		/* Fall through */
+	default:
+		return sprintf(buf, "%u\n",
+			*(u32 *)((char *)hfip + dattr->counter));
+	}
+}
+
+static ssize_t diagc_attr_store(struct kobject *kobj, struct attribute *attr,
+				const char *buf, size_t size)
+{
+	struct hfi1_diagc_attr *dattr =
+		container_of(attr, struct hfi1_diagc_attr, attr);
+	struct hfi1_pportdata *ppd =
+		container_of(kobj, struct hfi1_pportdata, diagc_kobj);
+	struct hfi1_ibport *hfip = &ppd->ibport_data;
+	u32 val;
+	int ret;
+
+	ret = kstrtou32(buf, 0, &val);
+	if (ret)
+		return ret;
+	*(u32 *)((char *)hfip + dattr->counter) = val;
+	return size;
+}
+
+static const struct sysfs_ops hfi1_diagc_ops = {
+	.show = diagc_attr_show,
+	.store = diagc_attr_store,
+};
+
+static struct kobj_type diagc_ktype = {
+	.release = port_release,
+	.sysfs_ops = &hfi1_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 show_rev(struct device *device, struct device_attribute *attr,
+			char *buf)
+{
+	struct hfi1_ibdev *dev =
+		container_of(device, struct hfi1_ibdev, ibdev.dev);
+
+	return sprintf(buf, "%x\n", dd_from_dev(dev)->minrev);
+}
+
+static ssize_t show_hca(struct device *device, struct device_attribute *attr,
+			char *buf)
+{
+	struct hfi1_ibdev *dev =
+		container_of(device, struct hfi1_ibdev, ibdev.dev);
+	struct hfi1_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 ssize_t show_version(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_hfi1_version);
+}
+
+static ssize_t show_boardversion(struct device *device,
+				 struct device_attribute *attr, char *buf)
+{
+	struct hfi1_ibdev *dev =
+		container_of(device, struct hfi1_ibdev, ibdev.dev);
+	struct hfi1_devdata *dd = dd_from_dev(dev);
+
+	/* The string printed here is already newline-terminated. */
+	return scnprintf(buf, PAGE_SIZE, "%s", dd->boardversion);
+}
+
+
+static ssize_t show_localbus_info(struct device *device,
+				  struct device_attribute *attr, char *buf)
+{
+	struct hfi1_ibdev *dev =
+		container_of(device, struct hfi1_ibdev, ibdev.dev);
+	struct hfi1_devdata *dd = dd_from_dev(dev);
+
+	return scnprintf(buf, PAGE_SIZE, "%s\n", dd->lbus_info);
+}
+
+
+static ssize_t show_nctxts(struct device *device,
+			   struct device_attribute *attr, char *buf)
+{
+	struct hfi1_ibdev *dev =
+		container_of(device, struct hfi1_ibdev, ibdev.dev);
+	struct hfi1_devdata *dd = dd_from_dev(dev);
+
+	/*
+	 * Return the smaller of send and receive contexts.
+	 * Normally, user level applications would require both a send
+	 * and a receive context, so returning the smaller of the two counts
+	 * give a more accurate picture of total contexts available.
+	 */
+	return scnprintf(buf, PAGE_SIZE, "%u\n",
+			 min(dd->num_rcv_contexts - dd->first_user_ctxt,
+			     (u32)dd->sc_sizes[SC_USER].count));
+}
+
+static ssize_t show_nfreectxts(struct device *device,
+			   struct device_attribute *attr, char *buf)
+{
+	struct hfi1_ibdev *dev =
+		container_of(device, struct hfi1_ibdev, ibdev.dev);
+	struct hfi1_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 ssize_t show_serial(struct device *device,
+			   struct device_attribute *attr, char *buf)
+{
+	struct hfi1_ibdev *dev =
+		container_of(device, struct hfi1_ibdev, ibdev.dev);
+	struct hfi1_devdata *dd = dd_from_dev(dev);
+
+	return scnprintf(buf, PAGE_SIZE, "%s", dd->serial);
+
+}
+
+static ssize_t store_chip_reset(struct device *device,
+				struct device_attribute *attr, const char *buf,
+				size_t count)
+{
+	struct hfi1_ibdev *dev =
+		container_of(device, struct hfi1_ibdev, ibdev.dev);
+	struct hfi1_devdata *dd = dd_from_dev(dev);
+	int ret;
+
+	if (count < 5 || memcmp(buf, "reset", 5) || !dd->diag_client) {
+		ret = -EINVAL;
+		goto bail;
+	}
+
+	ret = hfi1_reset_device(dd->unit);
+bail:
+	return ret < 0 ? ret : count;
+}
+
+/*
+ * Convert the reported temperature from an integer (reported in
+ * units of 0.25C) to a floating point number.
+ */
+#define temp2str(temp, buf, size, idx)					\
+	scnprintf((buf) + (idx), (size) - (idx), "%u.%02u ",		\
+			      ((temp) >> 2), ((temp) & 0x3) * 25)
+
+/*
+ * Dump tempsense values, in decimal, to ease shell-scripts.
+ */
+static ssize_t show_tempsense(struct device *device,
+			      struct device_attribute *attr, char *buf)
+{
+	struct hfi1_ibdev *dev =
+		container_of(device, struct hfi1_ibdev, ibdev.dev);
+	struct hfi1_devdata *dd = dd_from_dev(dev);
+	struct hfi1_temp temp;
+	int ret = -ENXIO;
+
+	ret = hfi1_tempsense_rd(dd, &temp);
+	if (!ret) {
+		int idx = 0;
+
+		idx += temp2str(temp.curr, buf, PAGE_SIZE, idx);
+		idx += temp2str(temp.lo_lim, buf, PAGE_SIZE, idx);
+		idx += temp2str(temp.hi_lim, buf, PAGE_SIZE, idx);
+		idx += temp2str(temp.crit_lim, buf, PAGE_SIZE, idx);
+		idx += scnprintf(buf + idx, PAGE_SIZE - idx,
+				"%u %u %u\n", temp.triggers & 0x1,
+				temp.triggers & 0x2, temp.triggers & 0x4);
+		ret = idx;
+	}
+	return ret;
+}
+
+/*
+ * end of per-unit (or driver, in some cases, but replicated
+ * per unit) functions
+ */
+
+/* start of per-unit file structures and support code */
+static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
+static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL);
+static DEVICE_ATTR(board_id, S_IRUGO, show_hca, NULL);
+static DEVICE_ATTR(version, S_IRUGO, show_version, NULL);
+static DEVICE_ATTR(nctxts, S_IRUGO, show_nctxts, NULL);
+static DEVICE_ATTR(nfreectxts, S_IRUGO, show_nfreectxts, NULL);
+static DEVICE_ATTR(serial, S_IRUGO, show_serial, NULL);
+static DEVICE_ATTR(boardversion, S_IRUGO, show_boardversion, NULL);
+static DEVICE_ATTR(tempsense, S_IRUGO, show_tempsense, NULL);
+static DEVICE_ATTR(localbus_info, S_IRUGO, show_localbus_info, NULL);
+static DEVICE_ATTR(chip_reset, S_IWUSR, NULL, store_chip_reset);
+
+static struct device_attribute *hfi1_attributes[] = {
+	&dev_attr_hw_rev,
+	&dev_attr_hca_type,
+	&dev_attr_board_id,
+	&dev_attr_version,
+	&dev_attr_nctxts,
+	&dev_attr_nfreectxts,
+	&dev_attr_serial,
+	&dev_attr_boardversion,
+	&dev_attr_tempsense,
+	&dev_attr_localbus_info,
+	&dev_attr_chip_reset,
+};
+
+int hfi1_create_port_files(struct ib_device *ibdev, u8 port_num,
+			   struct kobject *kobj)
+{
+	struct hfi1_pportdata *ppd;
+	struct hfi1_devdata *dd = dd_from_ibdev(ibdev);
+	int ret;
+
+	if (!port_num || port_num > dd->num_pports) {
+		dd_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, &hfi1_port_ktype, kobj,
+				   "linkcontrol");
+	if (ret) {
+		dd_dev_err(dd,
+			"Skipping linkcontrol sysfs info, (err %d) port %u\n",
+			ret, port_num);
+		goto bail;
+	}
+	kobject_uevent(&ppd->pport_kobj, KOBJ_ADD);
+
+	ret = kobject_init_and_add(&ppd->sc2vl_kobj, &hfi1_sc2vl_ktype, kobj,
+				   "sc2vl");
+	if (ret) {
+		dd_dev_err(dd,
+			   "Skipping sc2vl sysfs info, (err %d) port %u\n",
+			   ret, port_num);
+		goto bail_link;
+	}
+	kobject_uevent(&ppd->sc2vl_kobj, KOBJ_ADD);
+	ret = kobject_init_and_add(&ppd->sl2sc_kobj, &hfi1_sl2sc_ktype, kobj,
+				   "sl2sc");
+	if (ret) {
+		dd_dev_err(dd,
+			   "Skipping sl2sc sysfs info, (err %d) port %u\n",
+			   ret, port_num);
+		goto bail_link;
+	}
+	kobject_uevent(&ppd->sl2sc_kobj, KOBJ_ADD);
+
+	ret = kobject_init_and_add(&ppd->vl2mtu_kobj, &hfi1_vl2mtu_ktype, kobj,
+				   "vl2mtu");
+	if (ret) {
+		dd_dev_err(dd,
+			   "Skipping vl2mtu sysfs info, (err %d) port %u\n",
+			   ret, port_num);
+		goto bail_sl;
+	}
+	kobject_uevent(&ppd->vl2mtu_kobj, KOBJ_ADD);
+
+	ret = kobject_init_and_add(&ppd->diagc_kobj, &diagc_ktype, kobj,
+				   "diag_counters");
+	if (ret) {
+		dd_dev_err(dd,
+			"Skipping diag_counters sysfs info, (err %d) port %u\n",
+			ret, port_num);
+		goto bail_mtu;
+	}
+	kobject_uevent(&ppd->diagc_kobj, KOBJ_ADD);
+
+	ret = kobject_init_and_add(&ppd->pport_cc_kobj, &port_cc_ktype,
+				   kobj, "CCMgtA");
+	if (ret) {
+		dd_dev_err(dd,
+		 "Skipping Congestion Control sysfs info, (err %d) port %u\n",
+		 ret, port_num);
+		goto bail_diagc;
+	}
+
+	kobject_uevent(&ppd->pport_cc_kobj, KOBJ_ADD);
+
+	ret = sysfs_create_bin_file(&ppd->pport_cc_kobj,
+				&cc_setting_bin_attr);
+	if (ret) {
+		dd_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) {
+		dd_dev_err(dd,
+		 "Skipping Congestion Control table sysfs info, (err %d) port %u\n",
+		 ret, port_num);
+		goto bail_cc_entry_bin;
+	}
+
+	dd_dev_info(dd,
+		"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_mtu:
+	kobject_put(&ppd->vl2mtu_kobj);
+bail_sl:
+	kobject_put(&ppd->sc2vl_kobj);
+bail_link:
+	kobject_put(&ppd->pport_kobj);
+bail:
+	return ret;
+}
+
+/*
+ * Register and create our files in /sys/class/infiniband.
+ */
+int hfi1_verbs_register_sysfs(struct hfi1_devdata *dd)
+{
+	struct ib_device *dev = &dd->verbs_dev.ibdev;
+	int i, ret;
+
+	for (i = 0; i < ARRAY_SIZE(hfi1_attributes); ++i) {
+		ret = device_create_file(&dev->dev, hfi1_attributes[i]);
+		if (ret)
+			goto bail;
+	}
+
+	return 0;
+bail:
+	for (i = 0; i < ARRAY_SIZE(hfi1_attributes); ++i)
+		device_remove_file(&dev->dev, hfi1_attributes[i]);
+	return ret;
+}
+
+/*
+ * Unregister and remove our files in /sys/class/infiniband.
+ */
+void hfi1_verbs_unregister_sysfs(struct hfi1_devdata *dd)
+{
+	struct hfi1_pportdata *ppd;
+	int i;
+
+	for (i = 0; i < dd->num_pports; i++) {
+		ppd = &dd->pport[i];
+
+		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->vl2mtu_kobj);
+		kobject_put(&ppd->sc2vl_kobj);
+		kobject_put(&ppd->pport_kobj);
+	}
+}

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