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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/infiniband/hw/usnic/usnic_ib_sysfs.c | |
parent | Initial commit. (diff) | |
download | linux-upstream.tar.xz linux-upstream.zip |
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/infiniband/hw/usnic/usnic_ib_sysfs.c')
-rw-r--r-- | drivers/infiniband/hw/usnic/usnic_ib_sysfs.c | 295 |
1 files changed, 295 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/usnic/usnic_ib_sysfs.c b/drivers/infiniband/hw/usnic/usnic_ib_sysfs.c new file mode 100644 index 000000000..fdb63a8fb --- /dev/null +++ b/drivers/infiniband/hw/usnic/usnic_ib_sysfs.c @@ -0,0 +1,295 @@ +/* + * Copyright (c) 2013, Cisco Systems, 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 + * 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/init.h> +#include <linux/errno.h> + +#include <rdma/ib_user_verbs.h> +#include <rdma/ib_addr.h> + +#include "usnic_common_util.h" +#include "usnic_ib.h" +#include "usnic_ib_qp_grp.h" +#include "usnic_vnic.h" +#include "usnic_ib_verbs.h" +#include "usnic_ib_sysfs.h" +#include "usnic_log.h" + +static ssize_t board_id_show(struct device *device, + struct device_attribute *attr, char *buf) +{ + struct usnic_ib_dev *us_ibdev = + rdma_device_to_drv_device(device, struct usnic_ib_dev, ib_dev); + unsigned short subsystem_device_id; + + mutex_lock(&us_ibdev->usdev_lock); + subsystem_device_id = us_ibdev->pdev->subsystem_device; + mutex_unlock(&us_ibdev->usdev_lock); + + return sysfs_emit(buf, "%u\n", subsystem_device_id); +} +static DEVICE_ATTR_RO(board_id); + +/* + * Report the configuration for this PF + */ +static ssize_t +config_show(struct device *device, struct device_attribute *attr, char *buf) +{ + struct usnic_ib_dev *us_ibdev = + rdma_device_to_drv_device(device, struct usnic_ib_dev, ib_dev); + enum usnic_vnic_res_type res_type; + int len; + + mutex_lock(&us_ibdev->usdev_lock); + if (kref_read(&us_ibdev->vf_cnt) > 0) { + char *busname; + char *sep = ""; + /* + * bus name seems to come with annoying prefix. + * Remove it if it is predictable + */ + busname = us_ibdev->pdev->bus->name; + if (strncmp(busname, "PCI Bus ", 8) == 0) + busname += 8; + + len = sysfs_emit(buf, "%s: %s:%d.%d, %s, %pM, %u VFs\n", + dev_name(&us_ibdev->ib_dev.dev), + busname, + PCI_SLOT(us_ibdev->pdev->devfn), + PCI_FUNC(us_ibdev->pdev->devfn), + netdev_name(us_ibdev->netdev), + us_ibdev->ufdev->mac, + kref_read(&us_ibdev->vf_cnt)); + + len += sysfs_emit_at(buf, len, " Per VF:"); + for (res_type = USNIC_VNIC_RES_TYPE_EOL; + res_type < USNIC_VNIC_RES_TYPE_MAX; res_type++) { + if (us_ibdev->vf_res_cnt[res_type] == 0) + continue; + len += sysfs_emit_at(buf, len, "%s %d %s", + sep, + us_ibdev->vf_res_cnt[res_type], + usnic_vnic_res_type_to_str(res_type)); + sep = ","; + } + len += sysfs_emit_at(buf, len, "\n"); + } else { + len = sysfs_emit(buf, "%s: no VFs\n", + dev_name(&us_ibdev->ib_dev.dev)); + } + + mutex_unlock(&us_ibdev->usdev_lock); + + return len; +} +static DEVICE_ATTR_RO(config); + +static ssize_t +iface_show(struct device *device, struct device_attribute *attr, char *buf) +{ + struct usnic_ib_dev *us_ibdev = + rdma_device_to_drv_device(device, struct usnic_ib_dev, ib_dev); + + return sysfs_emit(buf, "%s\n", netdev_name(us_ibdev->netdev)); +} +static DEVICE_ATTR_RO(iface); + +static ssize_t +max_vf_show(struct device *device, struct device_attribute *attr, char *buf) +{ + struct usnic_ib_dev *us_ibdev = + rdma_device_to_drv_device(device, struct usnic_ib_dev, ib_dev); + + return sysfs_emit(buf, "%u\n", kref_read(&us_ibdev->vf_cnt)); +} +static DEVICE_ATTR_RO(max_vf); + +static ssize_t +qp_per_vf_show(struct device *device, struct device_attribute *attr, char *buf) +{ + struct usnic_ib_dev *us_ibdev = + rdma_device_to_drv_device(device, struct usnic_ib_dev, ib_dev); + int qp_per_vf; + + qp_per_vf = max(us_ibdev->vf_res_cnt[USNIC_VNIC_RES_TYPE_WQ], + us_ibdev->vf_res_cnt[USNIC_VNIC_RES_TYPE_RQ]); + + return sysfs_emit(buf, "%d\n", qp_per_vf); +} +static DEVICE_ATTR_RO(qp_per_vf); + +static ssize_t +cq_per_vf_show(struct device *device, struct device_attribute *attr, char *buf) +{ + struct usnic_ib_dev *us_ibdev = + rdma_device_to_drv_device(device, struct usnic_ib_dev, ib_dev); + + return sysfs_emit(buf, "%d\n", + us_ibdev->vf_res_cnt[USNIC_VNIC_RES_TYPE_CQ]); +} +static DEVICE_ATTR_RO(cq_per_vf); + +static struct attribute *usnic_class_attributes[] = { + &dev_attr_board_id.attr, + &dev_attr_config.attr, + &dev_attr_iface.attr, + &dev_attr_max_vf.attr, + &dev_attr_qp_per_vf.attr, + &dev_attr_cq_per_vf.attr, + NULL +}; + +const struct attribute_group usnic_attr_group = { + .attrs = usnic_class_attributes, +}; + +struct qpn_attribute { + struct attribute attr; + ssize_t (*show)(struct usnic_ib_qp_grp *, char *buf); +}; + +/* + * Definitions for supporting QPN entries in sysfs + */ +static ssize_t +usnic_ib_qpn_attr_show(struct kobject *kobj, struct attribute *attr, char *buf) +{ + struct usnic_ib_qp_grp *qp_grp; + struct qpn_attribute *qpn_attr; + + qp_grp = container_of(kobj, struct usnic_ib_qp_grp, kobj); + qpn_attr = container_of(attr, struct qpn_attribute, attr); + + return qpn_attr->show(qp_grp, buf); +} + +static const struct sysfs_ops usnic_ib_qpn_sysfs_ops = { + .show = usnic_ib_qpn_attr_show +}; + +#define QPN_ATTR_RO(NAME) \ +struct qpn_attribute qpn_attr_##NAME = __ATTR_RO(NAME) + +static ssize_t context_show(struct usnic_ib_qp_grp *qp_grp, char *buf) +{ + return sysfs_emit(buf, "0x%p\n", qp_grp->ctx); +} + +static ssize_t summary_show(struct usnic_ib_qp_grp *qp_grp, char *buf) +{ + int i, j; + struct usnic_vnic_res_chunk *res_chunk; + struct usnic_vnic_res *vnic_res; + int len; + + len = sysfs_emit(buf, "QPN: %d State: (%s) PID: %u VF Idx: %hu", + qp_grp->ibqp.qp_num, + usnic_ib_qp_grp_state_to_string(qp_grp->state), + qp_grp->owner_pid, + usnic_vnic_get_index(qp_grp->vf->vnic)); + + for (i = 0; qp_grp->res_chunk_list[i]; i++) { + res_chunk = qp_grp->res_chunk_list[i]; + for (j = 0; j < res_chunk->cnt; j++) { + vnic_res = res_chunk->res[j]; + len += sysfs_emit_at(buf, len, " %s[%d]", + usnic_vnic_res_type_to_str(vnic_res->type), + vnic_res->vnic_idx); + } + } + + len += sysfs_emit_at(buf, len, "\n"); + + return len; +} + +static QPN_ATTR_RO(context); +static QPN_ATTR_RO(summary); + +static struct attribute *usnic_ib_qpn_default_attrs[] = { + &qpn_attr_context.attr, + &qpn_attr_summary.attr, + NULL +}; +ATTRIBUTE_GROUPS(usnic_ib_qpn_default); + +static struct kobj_type usnic_ib_qpn_type = { + .sysfs_ops = &usnic_ib_qpn_sysfs_ops, + .default_groups = usnic_ib_qpn_default_groups, +}; + +int usnic_ib_sysfs_register_usdev(struct usnic_ib_dev *us_ibdev) +{ + /* create kernel object for looking at individual QPs */ + kobject_get(&us_ibdev->ib_dev.dev.kobj); + us_ibdev->qpn_kobj = kobject_create_and_add("qpn", + &us_ibdev->ib_dev.dev.kobj); + if (us_ibdev->qpn_kobj == NULL) { + kobject_put(&us_ibdev->ib_dev.dev.kobj); + return -ENOMEM; + } + + return 0; +} + +void usnic_ib_sysfs_unregister_usdev(struct usnic_ib_dev *us_ibdev) +{ + kobject_put(us_ibdev->qpn_kobj); +} + +void usnic_ib_sysfs_qpn_add(struct usnic_ib_qp_grp *qp_grp) +{ + struct usnic_ib_dev *us_ibdev; + int err; + + us_ibdev = qp_grp->vf->pf; + + err = kobject_init_and_add(&qp_grp->kobj, &usnic_ib_qpn_type, + kobject_get(us_ibdev->qpn_kobj), + "%d", qp_grp->grp_id); + if (err) { + kobject_put(us_ibdev->qpn_kobj); + return; + } +} + +void usnic_ib_sysfs_qpn_remove(struct usnic_ib_qp_grp *qp_grp) +{ + struct usnic_ib_dev *us_ibdev; + + us_ibdev = qp_grp->vf->pf; + + kobject_put(&qp_grp->kobj); + kobject_put(us_ibdev->qpn_kobj); +} |