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Diffstat (limited to 'drivers/infiniband/hw/qib/qib_sysfs.c')
-rw-r--r--drivers/infiniband/hw/qib/qib_sysfs.c737
1 files changed, 737 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..41c272980
--- /dev/null
+++ b/drivers/infiniband/hw/qib/qib_sysfs.c
@@ -0,0 +1,737 @@
+/*
+ * 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 <rdma/ib_sysfs.h>
+
+#include "qib.h"
+#include "qib_mad.h"
+
+static struct qib_pportdata *qib_get_pportdata_kobj(struct kobject *kobj)
+{
+ u32 port_num;
+ struct ib_device *ibdev = ib_port_sysfs_get_ibdev_kobj(kobj, &port_num);
+ struct qib_devdata *dd = dd_from_ibdev(ibdev);
+
+ return &dd->pport[port_num - 1];
+}
+
+/*
+ * Get/Set heartbeat enable. OR of 1=enabled, 2=auto
+ */
+static ssize_t hrtbt_enable_show(struct ib_device *ibdev, u32 port_num,
+ struct ib_port_attribute *attr, char *buf)
+{
+ struct qib_devdata *dd = dd_from_ibdev(ibdev);
+ struct qib_pportdata *ppd = &dd->pport[port_num - 1];
+
+ return sysfs_emit(buf, "%d\n", dd->f_get_ib_cfg(ppd, QIB_IB_CFG_HRTBT));
+}
+
+static ssize_t hrtbt_enable_store(struct ib_device *ibdev, u32 port_num,
+ struct ib_port_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct qib_devdata *dd = dd_from_ibdev(ibdev);
+ struct qib_pportdata *ppd = &dd->pport[port_num - 1];
+ 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 IB_PORT_ATTR_RW(hrtbt_enable);
+
+static ssize_t loopback_store(struct ib_device *ibdev, u32 port_num,
+ struct ib_port_attribute *attr, const char *buf,
+ size_t count)
+{
+ struct qib_devdata *dd = dd_from_ibdev(ibdev);
+ struct qib_pportdata *ppd = &dd->pport[port_num - 1];
+ int ret = count, r;
+
+ r = dd->f_set_ib_loopback(ppd, buf);
+ if (r < 0)
+ ret = r;
+
+ return ret;
+}
+static IB_PORT_ATTR_WO(loopback);
+
+static ssize_t led_override_store(struct ib_device *ibdev, u32 port_num,
+ struct ib_port_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct qib_devdata *dd = dd_from_ibdev(ibdev);
+ struct qib_pportdata *ppd = &dd->pport[port_num - 1];
+ 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 IB_PORT_ATTR_WO(led_override);
+
+static ssize_t status_show(struct ib_device *ibdev, u32 port_num,
+ struct ib_port_attribute *attr, char *buf)
+{
+ struct qib_devdata *dd = dd_from_ibdev(ibdev);
+ struct qib_pportdata *ppd = &dd->pport[port_num - 1];
+
+ if (!ppd->statusp)
+ return -EINVAL;
+
+ return sysfs_emit(buf, "0x%llx\n", (unsigned long long)*(ppd->statusp));
+}
+static IB_PORT_ATTR_RO(status);
+
+/*
+ * 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 status_str_show(struct ib_device *ibdev, u32 port_num,
+ struct ib_port_attribute *attr, char *buf)
+{
+ struct qib_devdata *dd = dd_from_ibdev(ibdev);
+ struct qib_pportdata *ppd = &dd->pport[port_num - 1];
+ 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;
+}
+static IB_PORT_ATTR_RO(status_str);
+
+/* end of per-port functions */
+
+static struct attribute *port_linkcontrol_attributes[] = {
+ &ib_port_attr_loopback.attr,
+ &ib_port_attr_led_override.attr,
+ &ib_port_attr_hrtbt_enable.attr,
+ &ib_port_attr_status.attr,
+ &ib_port_attr_status_str.attr,
+ NULL
+};
+
+static const struct attribute_group port_linkcontrol_group = {
+ .name = "linkcontrol",
+ .attrs = port_linkcontrol_attributes,
+};
+
+/*
+ * Start of per-port congestion control structures and support code
+ */
+
+/*
+ * Congestion control table size followed by table entries
+ */
+static ssize_t cc_table_bin_read(struct file *filp, struct kobject *kobj,
+ struct bin_attribute *bin_attr, char *buf,
+ loff_t pos, size_t count)
+{
+ struct qib_pportdata *ppd = qib_get_pportdata_kobj(kobj);
+ int ret;
+
+ 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 BIN_ATTR_RO(cc_table_bin, 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 cc_setting_bin_read(struct file *filp, struct kobject *kobj,
+ struct bin_attribute *bin_attr, char *buf,
+ loff_t pos, size_t count)
+{
+ struct qib_pportdata *ppd = qib_get_pportdata_kobj(kobj);
+ int ret;
+
+ 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 BIN_ATTR_RO(cc_setting_bin, PAGE_SIZE);
+
+static struct bin_attribute *port_ccmgta_attributes[] = {
+ &bin_attr_cc_setting_bin,
+ &bin_attr_cc_table_bin,
+ NULL,
+};
+
+static umode_t qib_ccmgta_is_bin_visible(struct kobject *kobj,
+ struct bin_attribute *attr, int n)
+{
+ struct qib_pportdata *ppd = qib_get_pportdata_kobj(kobj);
+
+ if (!qib_cc_table_size || !ppd->congestion_entries_shadow)
+ return 0;
+ return attr->attr.mode;
+}
+
+static const struct attribute_group port_ccmgta_attribute_group = {
+ .name = "CCMgtA",
+ .is_bin_visible = qib_ccmgta_is_bin_visible,
+ .bin_attrs = port_ccmgta_attributes,
+};
+
+/* Start sl2vl */
+
+struct qib_sl2vl_attr {
+ struct ib_port_attribute attr;
+ int sl;
+};
+
+static ssize_t sl2vl_attr_show(struct ib_device *ibdev, u32 port_num,
+ struct ib_port_attribute *attr, char *buf)
+{
+ struct qib_sl2vl_attr *sattr =
+ container_of(attr, struct qib_sl2vl_attr, attr);
+ struct qib_devdata *dd = dd_from_ibdev(ibdev);
+ struct qib_ibport *qibp = &dd->pport[port_num - 1].ibport_data;
+
+ return sysfs_emit(buf, "%u\n", qibp->sl_to_vl[sattr->sl]);
+}
+
+#define QIB_SL2VL_ATTR(N) \
+ static struct qib_sl2vl_attr qib_sl2vl_attr_##N = { \
+ .attr = __ATTR(N, 0444, sl2vl_attr_show, NULL), \
+ .sl = N, \
+ }
+
+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 *port_sl2vl_attributes[] = {
+ &qib_sl2vl_attr_0.attr.attr,
+ &qib_sl2vl_attr_1.attr.attr,
+ &qib_sl2vl_attr_2.attr.attr,
+ &qib_sl2vl_attr_3.attr.attr,
+ &qib_sl2vl_attr_4.attr.attr,
+ &qib_sl2vl_attr_5.attr.attr,
+ &qib_sl2vl_attr_6.attr.attr,
+ &qib_sl2vl_attr_7.attr.attr,
+ &qib_sl2vl_attr_8.attr.attr,
+ &qib_sl2vl_attr_9.attr.attr,
+ &qib_sl2vl_attr_10.attr.attr,
+ &qib_sl2vl_attr_11.attr.attr,
+ &qib_sl2vl_attr_12.attr.attr,
+ &qib_sl2vl_attr_13.attr.attr,
+ &qib_sl2vl_attr_14.attr.attr,
+ &qib_sl2vl_attr_15.attr.attr,
+ NULL
+};
+
+static const struct attribute_group port_sl2vl_group = {
+ .name = "sl2vl",
+ .attrs = port_sl2vl_attributes,
+};
+
+/* End sl2vl */
+
+/* Start diag_counters */
+
+struct qib_diagc_attr {
+ struct ib_port_attribute attr;
+ size_t counter;
+};
+
+static ssize_t diagc_attr_show(struct ib_device *ibdev, u32 port_num,
+ struct ib_port_attribute *attr, char *buf)
+{
+ struct qib_diagc_attr *dattr =
+ container_of(attr, struct qib_diagc_attr, attr);
+ struct qib_devdata *dd = dd_from_ibdev(ibdev);
+ struct qib_ibport *qibp = &dd->pport[port_num - 1].ibport_data;
+
+ return sysfs_emit(buf, "%llu\n", *((u64 *)qibp + dattr->counter));
+}
+
+static ssize_t diagc_attr_store(struct ib_device *ibdev, u32 port_num,
+ struct ib_port_attribute *attr, const char *buf,
+ size_t count)
+{
+ struct qib_diagc_attr *dattr =
+ container_of(attr, struct qib_diagc_attr, attr);
+ struct qib_devdata *dd = dd_from_ibdev(ibdev);
+ struct qib_ibport *qibp = &dd->pport[port_num - 1].ibport_data;
+ u64 val;
+ int ret;
+
+ ret = kstrtou64(buf, 0, &val);
+ if (ret)
+ return ret;
+ *((u64 *)qibp + dattr->counter) = val;
+ return count;
+}
+
+#define QIB_DIAGC_ATTR(N) \
+ static_assert(__same_type(((struct qib_ibport *)0)->rvp.n_##N, u64)); \
+ static struct qib_diagc_attr qib_diagc_attr_##N = { \
+ .attr = __ATTR(N, 0664, diagc_attr_show, diagc_attr_store), \
+ .counter = \
+ offsetof(struct qib_ibport, rvp.n_##N) / sizeof(u64) \
+ }
+
+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 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;
+}
+
+static ssize_t qib_store_per_cpu(struct qib_devdata *dd, const char *buf,
+ size_t count, u64 *zero, u64 cur)
+{
+ u32 val;
+ int ret;
+
+ ret = kstrtou32(buf, 0, &val);
+ if (ret)
+ return ret;
+ if (val != 0) {
+ qib_dev_err(dd, "Per CPU cntrs can only be zeroed");
+ return count;
+ }
+ *zero = cur;
+ return count;
+}
+
+static ssize_t rc_acks_show(struct ib_device *ibdev, u32 port_num,
+ struct ib_port_attribute *attr, char *buf)
+{
+ struct qib_devdata *dd = dd_from_ibdev(ibdev);
+ struct qib_ibport *qibp = &dd->pport[port_num - 1].ibport_data;
+
+ return sysfs_emit(buf, "%llu\n",
+ get_all_cpu_total(qibp->rvp.rc_acks) -
+ qibp->rvp.z_rc_acks);
+}
+
+static ssize_t rc_acks_store(struct ib_device *ibdev, u32 port_num,
+ struct ib_port_attribute *attr, const char *buf,
+ size_t count)
+{
+ struct qib_devdata *dd = dd_from_ibdev(ibdev);
+ struct qib_ibport *qibp = &dd->pport[port_num - 1].ibport_data;
+
+ return qib_store_per_cpu(dd, buf, count, &qibp->rvp.z_rc_acks,
+ get_all_cpu_total(qibp->rvp.rc_acks));
+}
+static IB_PORT_ATTR_RW(rc_acks);
+
+static ssize_t rc_qacks_show(struct ib_device *ibdev, u32 port_num,
+ struct ib_port_attribute *attr, char *buf)
+{
+ struct qib_devdata *dd = dd_from_ibdev(ibdev);
+ struct qib_ibport *qibp = &dd->pport[port_num - 1].ibport_data;
+
+ return sysfs_emit(buf, "%llu\n",
+ get_all_cpu_total(qibp->rvp.rc_qacks) -
+ qibp->rvp.z_rc_qacks);
+}
+
+static ssize_t rc_qacks_store(struct ib_device *ibdev, u32 port_num,
+ struct ib_port_attribute *attr, const char *buf,
+ size_t count)
+{
+ struct qib_devdata *dd = dd_from_ibdev(ibdev);
+ struct qib_ibport *qibp = &dd->pport[port_num - 1].ibport_data;
+
+ return qib_store_per_cpu(dd, buf, count, &qibp->rvp.z_rc_qacks,
+ get_all_cpu_total(qibp->rvp.rc_qacks));
+}
+static IB_PORT_ATTR_RW(rc_qacks);
+
+static ssize_t rc_delayed_comp_show(struct ib_device *ibdev, u32 port_num,
+ struct ib_port_attribute *attr, char *buf)
+{
+ struct qib_devdata *dd = dd_from_ibdev(ibdev);
+ struct qib_ibport *qibp = &dd->pport[port_num - 1].ibport_data;
+
+ return sysfs_emit(buf, "%llu\n",
+ get_all_cpu_total(qibp->rvp.rc_delayed_comp) -
+ qibp->rvp.z_rc_delayed_comp);
+}
+
+static ssize_t rc_delayed_comp_store(struct ib_device *ibdev, u32 port_num,
+ struct ib_port_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct qib_devdata *dd = dd_from_ibdev(ibdev);
+ struct qib_ibport *qibp = &dd->pport[port_num - 1].ibport_data;
+
+ return qib_store_per_cpu(dd, buf, count, &qibp->rvp.z_rc_delayed_comp,
+ get_all_cpu_total(qibp->rvp.rc_delayed_comp));
+}
+static IB_PORT_ATTR_RW(rc_delayed_comp);
+
+static struct attribute *port_diagc_attributes[] = {
+ &qib_diagc_attr_rc_resends.attr.attr,
+ &qib_diagc_attr_seq_naks.attr.attr,
+ &qib_diagc_attr_rdma_seq.attr.attr,
+ &qib_diagc_attr_rnr_naks.attr.attr,
+ &qib_diagc_attr_other_naks.attr.attr,
+ &qib_diagc_attr_rc_timeouts.attr.attr,
+ &qib_diagc_attr_loop_pkts.attr.attr,
+ &qib_diagc_attr_pkt_drops.attr.attr,
+ &qib_diagc_attr_dmawait.attr.attr,
+ &qib_diagc_attr_unaligned.attr.attr,
+ &qib_diagc_attr_rc_dupreq.attr.attr,
+ &qib_diagc_attr_rc_seqnak.attr.attr,
+ &qib_diagc_attr_rc_crwaits.attr.attr,
+ &ib_port_attr_rc_acks.attr,
+ &ib_port_attr_rc_qacks.attr,
+ &ib_port_attr_rc_delayed_comp.attr,
+ NULL
+};
+
+static const struct attribute_group port_diagc_group = {
+ .name = "diag_counters",
+ .attrs = port_diagc_attributes,
+};
+
+/* End diag_counters */
+
+const struct attribute_group *qib_attr_port_groups[] = {
+ &port_linkcontrol_group,
+ &port_ccmgta_attribute_group,
+ &port_sl2vl_group,
+ &port_diagc_group,
+ NULL,
+};
+
+/* 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 sysfs_emit(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);
+
+ if (!dd->boardname)
+ return -EINVAL;
+ return sysfs_emit(buf, "%s\n", dd->boardname);
+}
+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 sysfs_emit(buf, "%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 sysfs_emit(buf, "%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 sysfs_emit(buf, "%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 sysfs_emit(buf, "%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 sysfs_emit(buf, "%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);
+ const u8 *end = memchr(dd->serial, 0, ARRAY_SIZE(dd->serial));
+ int size = end ? end - dd->serial : ARRAY_SIZE(dd->serial);
+
+ return sysfs_emit(buf, ".%*s\n", size, dd->serial);
+}
+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 i;
+ u8 regvals[8];
+
+ for (i = 0; i < 8; i++) {
+ int ret;
+
+ if (i == 6)
+ continue;
+ ret = dd->f_tempsense_rd(dd, i);
+ if (ret < 0)
+ return ret; /* return error on bad read */
+ regvals[i] = ret;
+ }
+ return sysfs_emit(buf, "%d %d %02X %02X %d %d\n",
+ (signed char)regvals[0],
+ (signed char)regvals[1],
+ regvals[2],
+ regvals[3],
+ (signed char)regvals[5],
+ (signed char)regvals[7]);
+}
+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,
+};
generated by cgit v1.2.3 (git 2.39.1) at 2024-08-07 06:59:58 +0000