2 * Copyright (c) 2013, Cisco Systems, Inc. All rights reserved.
4 * This software is available to you under a choice of one of two
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6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
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15 * copyright notice, this list of conditions and the following
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
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21 * provided with the distribution.
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
34 #include <linux/module.h>
35 #include <linux/init.h>
36 #include <linux/errno.h>
38 #include <rdma/ib_user_verbs.h>
39 #include <rdma/ib_addr.h>
41 #include "usnic_common_util.h"
43 #include "usnic_ib_qp_grp.h"
44 #include "usnic_vnic.h"
45 #include "usnic_ib_verbs.h"
46 #include "usnic_log.h"
48 static ssize_t usnic_ib_show_board(struct device *device,
49 struct device_attribute *attr,
52 struct usnic_ib_dev *us_ibdev =
53 container_of(device, struct usnic_ib_dev, ib_dev.dev);
54 unsigned short subsystem_device_id;
56 mutex_lock(&us_ibdev->usdev_lock);
57 subsystem_device_id = us_ibdev->pdev->subsystem_device;
58 mutex_unlock(&us_ibdev->usdev_lock);
60 return scnprintf(buf, PAGE_SIZE, "%hu\n", subsystem_device_id);
64 * Report the configuration for this PF
67 usnic_ib_show_config(struct device *device, struct device_attribute *attr,
70 struct usnic_ib_dev *us_ibdev;
74 enum usnic_vnic_res_type res_type;
76 us_ibdev = container_of(device, struct usnic_ib_dev, ib_dev.dev);
78 /* Buffer space limit is 1 page */
82 mutex_lock(&us_ibdev->usdev_lock);
83 if (atomic_read(&us_ibdev->vf_cnt.refcount) > 0) {
87 * bus name seems to come with annoying prefix.
88 * Remove it if it is predictable
90 busname = us_ibdev->pdev->bus->name;
91 if (strncmp(busname, "PCI Bus ", 8) == 0)
94 n = scnprintf(ptr, left,
95 "%s: %s:%d.%d, %s, %pM, %u VFs\n Per VF:",
96 us_ibdev->ib_dev.name,
98 PCI_SLOT(us_ibdev->pdev->devfn),
99 PCI_FUNC(us_ibdev->pdev->devfn),
100 netdev_name(us_ibdev->netdev),
101 us_ibdev->ufdev->mac,
102 atomic_read(&us_ibdev->vf_cnt.refcount));
103 UPDATE_PTR_LEFT(n, ptr, left);
105 for (res_type = USNIC_VNIC_RES_TYPE_EOL;
106 res_type < USNIC_VNIC_RES_TYPE_MAX;
108 if (us_ibdev->vf_res_cnt[res_type] == 0)
110 n = scnprintf(ptr, left, " %d %s%s",
111 us_ibdev->vf_res_cnt[res_type],
112 usnic_vnic_res_type_to_str(res_type),
113 (res_type < (USNIC_VNIC_RES_TYPE_MAX - 1)) ?
115 UPDATE_PTR_LEFT(n, ptr, left);
117 n = scnprintf(ptr, left, "\n");
118 UPDATE_PTR_LEFT(n, ptr, left);
120 n = scnprintf(ptr, left, "%s: no VFs\n",
121 us_ibdev->ib_dev.name);
122 UPDATE_PTR_LEFT(n, ptr, left);
124 mutex_unlock(&us_ibdev->usdev_lock);
130 usnic_ib_show_iface(struct device *device, struct device_attribute *attr,
133 struct usnic_ib_dev *us_ibdev;
135 us_ibdev = container_of(device, struct usnic_ib_dev, ib_dev.dev);
137 return scnprintf(buf, PAGE_SIZE, "%s\n",
138 netdev_name(us_ibdev->netdev));
142 usnic_ib_show_max_vf(struct device *device, struct device_attribute *attr,
145 struct usnic_ib_dev *us_ibdev;
147 us_ibdev = container_of(device, struct usnic_ib_dev, ib_dev.dev);
149 return scnprintf(buf, PAGE_SIZE, "%u\n",
150 atomic_read(&us_ibdev->vf_cnt.refcount));
154 usnic_ib_show_qp_per_vf(struct device *device, struct device_attribute *attr,
157 struct usnic_ib_dev *us_ibdev;
160 us_ibdev = container_of(device, struct usnic_ib_dev, ib_dev.dev);
161 qp_per_vf = max(us_ibdev->vf_res_cnt[USNIC_VNIC_RES_TYPE_WQ],
162 us_ibdev->vf_res_cnt[USNIC_VNIC_RES_TYPE_RQ]);
164 return scnprintf(buf, PAGE_SIZE,
169 usnic_ib_show_cq_per_vf(struct device *device, struct device_attribute *attr,
172 struct usnic_ib_dev *us_ibdev;
174 us_ibdev = container_of(device, struct usnic_ib_dev, ib_dev.dev);
176 return scnprintf(buf, PAGE_SIZE, "%d\n",
177 us_ibdev->vf_res_cnt[USNIC_VNIC_RES_TYPE_CQ]);
180 static DEVICE_ATTR(board_id, S_IRUGO, usnic_ib_show_board, NULL);
181 static DEVICE_ATTR(config, S_IRUGO, usnic_ib_show_config, NULL);
182 static DEVICE_ATTR(iface, S_IRUGO, usnic_ib_show_iface, NULL);
183 static DEVICE_ATTR(max_vf, S_IRUGO, usnic_ib_show_max_vf, NULL);
184 static DEVICE_ATTR(qp_per_vf, S_IRUGO, usnic_ib_show_qp_per_vf, NULL);
185 static DEVICE_ATTR(cq_per_vf, S_IRUGO, usnic_ib_show_cq_per_vf, NULL);
187 static struct device_attribute *usnic_class_attributes[] = {
196 struct qpn_attribute {
197 struct attribute attr;
198 ssize_t (*show)(struct usnic_ib_qp_grp *, char *buf);
202 * Definitions for supporting QPN entries in sysfs
205 usnic_ib_qpn_attr_show(struct kobject *kobj, struct attribute *attr, char *buf)
207 struct usnic_ib_qp_grp *qp_grp;
208 struct qpn_attribute *qpn_attr;
210 qp_grp = container_of(kobj, struct usnic_ib_qp_grp, kobj);
211 qpn_attr = container_of(attr, struct qpn_attribute, attr);
213 return qpn_attr->show(qp_grp, buf);
216 static const struct sysfs_ops usnic_ib_qpn_sysfs_ops = {
217 .show = usnic_ib_qpn_attr_show
220 #define QPN_ATTR_RO(NAME) \
221 struct qpn_attribute qpn_attr_##NAME = __ATTR_RO(NAME)
223 static ssize_t context_show(struct usnic_ib_qp_grp *qp_grp, char *buf)
225 return scnprintf(buf, PAGE_SIZE, "0x%p\n", qp_grp->ctx);
228 static ssize_t summary_show(struct usnic_ib_qp_grp *qp_grp, char *buf)
233 struct usnic_vnic_res_chunk *res_chunk;
234 struct usnic_vnic_res *vnic_res;
239 n = scnprintf(ptr, left,
240 "QPN: %d State: (%s) PID: %u VF Idx: %hu ",
242 usnic_ib_qp_grp_state_to_string(qp_grp->state),
244 usnic_vnic_get_index(qp_grp->vf->vnic));
245 UPDATE_PTR_LEFT(n, ptr, left);
247 for (i = 0; qp_grp->res_chunk_list[i]; i++) {
248 res_chunk = qp_grp->res_chunk_list[i];
249 for (j = 0; j < res_chunk->cnt; j++) {
250 vnic_res = res_chunk->res[j];
251 n = scnprintf(ptr, left, "%s[%d] ",
252 usnic_vnic_res_type_to_str(vnic_res->type),
254 UPDATE_PTR_LEFT(n, ptr, left);
258 n = scnprintf(ptr, left, "\n");
259 UPDATE_PTR_LEFT(n, ptr, left);
264 static QPN_ATTR_RO(context);
265 static QPN_ATTR_RO(summary);
267 static struct attribute *usnic_ib_qpn_default_attrs[] = {
268 &qpn_attr_context.attr,
269 &qpn_attr_summary.attr,
273 static struct kobj_type usnic_ib_qpn_type = {
274 .sysfs_ops = &usnic_ib_qpn_sysfs_ops,
275 .default_attrs = usnic_ib_qpn_default_attrs
278 int usnic_ib_sysfs_register_usdev(struct usnic_ib_dev *us_ibdev)
282 for (i = 0; i < ARRAY_SIZE(usnic_class_attributes); ++i) {
283 err = device_create_file(&us_ibdev->ib_dev.dev,
284 usnic_class_attributes[i]);
286 usnic_err("Failed to create device file %d for %s eith err %d",
287 i, us_ibdev->ib_dev.name, err);
292 /* create kernel object for looking at individual QPs */
293 kobject_get(&us_ibdev->ib_dev.dev.kobj);
294 us_ibdev->qpn_kobj = kobject_create_and_add("qpn",
295 &us_ibdev->ib_dev.dev.kobj);
296 if (us_ibdev->qpn_kobj == NULL) {
297 kobject_put(&us_ibdev->ib_dev.dev.kobj);
304 void usnic_ib_sysfs_unregister_usdev(struct usnic_ib_dev *us_ibdev)
307 for (i = 0; i < ARRAY_SIZE(usnic_class_attributes); ++i) {
308 device_remove_file(&us_ibdev->ib_dev.dev,
309 usnic_class_attributes[i]);
312 kobject_put(us_ibdev->qpn_kobj);
315 void usnic_ib_sysfs_qpn_add(struct usnic_ib_qp_grp *qp_grp)
317 struct usnic_ib_dev *us_ibdev;
320 us_ibdev = qp_grp->vf->pf;
322 err = kobject_init_and_add(&qp_grp->kobj, &usnic_ib_qpn_type,
323 kobject_get(us_ibdev->qpn_kobj),
324 "%d", qp_grp->grp_id);
326 kobject_put(us_ibdev->qpn_kobj);
331 void usnic_ib_sysfs_qpn_remove(struct usnic_ib_qp_grp *qp_grp)
333 struct usnic_ib_dev *us_ibdev;
335 us_ibdev = qp_grp->vf->pf;
337 kobject_put(&qp_grp->kobj);
338 kobject_put(us_ibdev->qpn_kobj);