2 * Copyright (c) 2013, Cisco Systems, Inc. All rights reserved.
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6 * General Public License (GPL) Version 2, available from the file
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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
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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_fw_ver(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 struct ethtool_drvinfo info;
56 mutex_lock(&us_ibdev->usdev_lock);
57 us_ibdev->netdev->ethtool_ops->get_drvinfo(us_ibdev->netdev, &info);
58 mutex_unlock(&us_ibdev->usdev_lock);
60 return scnprintf(buf, PAGE_SIZE, "%s\n", info.fw_version);
63 static ssize_t usnic_ib_show_board(struct device *device,
64 struct device_attribute *attr,
67 struct usnic_ib_dev *us_ibdev =
68 container_of(device, struct usnic_ib_dev, ib_dev.dev);
69 unsigned short subsystem_device_id;
71 mutex_lock(&us_ibdev->usdev_lock);
72 subsystem_device_id = us_ibdev->pdev->subsystem_device;
73 mutex_unlock(&us_ibdev->usdev_lock);
75 return scnprintf(buf, PAGE_SIZE, "%hu\n", subsystem_device_id);
79 * Report the configuration for this PF
82 usnic_ib_show_config(struct device *device, struct device_attribute *attr,
85 struct usnic_ib_dev *us_ibdev;
89 enum usnic_vnic_res_type res_type;
91 us_ibdev = container_of(device, struct usnic_ib_dev, ib_dev.dev);
93 /* Buffer space limit is 1 page */
97 mutex_lock(&us_ibdev->usdev_lock);
98 if (atomic_read(&us_ibdev->vf_cnt.refcount) > 0) {
102 * bus name seems to come with annoying prefix.
103 * Remove it if it is predictable
105 busname = us_ibdev->pdev->bus->name;
106 if (strncmp(busname, "PCI Bus ", 8) == 0)
109 n = scnprintf(ptr, left,
110 "%s: %s:%d.%d, %s, %pM, %u VFs\n Per VF:",
111 us_ibdev->ib_dev.name,
113 PCI_SLOT(us_ibdev->pdev->devfn),
114 PCI_FUNC(us_ibdev->pdev->devfn),
115 netdev_name(us_ibdev->netdev),
116 us_ibdev->ufdev->mac,
117 atomic_read(&us_ibdev->vf_cnt.refcount));
118 UPDATE_PTR_LEFT(n, ptr, left);
120 for (res_type = USNIC_VNIC_RES_TYPE_EOL;
121 res_type < USNIC_VNIC_RES_TYPE_MAX;
123 if (us_ibdev->vf_res_cnt[res_type] == 0)
125 n = scnprintf(ptr, left, " %d %s%s",
126 us_ibdev->vf_res_cnt[res_type],
127 usnic_vnic_res_type_to_str(res_type),
128 (res_type < (USNIC_VNIC_RES_TYPE_MAX - 1)) ?
130 UPDATE_PTR_LEFT(n, ptr, left);
132 n = scnprintf(ptr, left, "\n");
133 UPDATE_PTR_LEFT(n, ptr, left);
135 n = scnprintf(ptr, left, "%s: no VFs\n",
136 us_ibdev->ib_dev.name);
137 UPDATE_PTR_LEFT(n, ptr, left);
139 mutex_unlock(&us_ibdev->usdev_lock);
145 usnic_ib_show_iface(struct device *device, struct device_attribute *attr,
148 struct usnic_ib_dev *us_ibdev;
150 us_ibdev = container_of(device, struct usnic_ib_dev, ib_dev.dev);
152 return scnprintf(buf, PAGE_SIZE, "%s\n",
153 netdev_name(us_ibdev->netdev));
157 usnic_ib_show_max_vf(struct device *device, struct device_attribute *attr,
160 struct usnic_ib_dev *us_ibdev;
162 us_ibdev = container_of(device, struct usnic_ib_dev, ib_dev.dev);
164 return scnprintf(buf, PAGE_SIZE, "%u\n",
165 atomic_read(&us_ibdev->vf_cnt.refcount));
169 usnic_ib_show_qp_per_vf(struct device *device, struct device_attribute *attr,
172 struct usnic_ib_dev *us_ibdev;
175 us_ibdev = container_of(device, struct usnic_ib_dev, ib_dev.dev);
176 qp_per_vf = max(us_ibdev->vf_res_cnt[USNIC_VNIC_RES_TYPE_WQ],
177 us_ibdev->vf_res_cnt[USNIC_VNIC_RES_TYPE_RQ]);
179 return scnprintf(buf, PAGE_SIZE,
184 usnic_ib_show_cq_per_vf(struct device *device, struct device_attribute *attr,
187 struct usnic_ib_dev *us_ibdev;
189 us_ibdev = container_of(device, struct usnic_ib_dev, ib_dev.dev);
191 return scnprintf(buf, PAGE_SIZE, "%d\n",
192 us_ibdev->vf_res_cnt[USNIC_VNIC_RES_TYPE_CQ]);
195 static DEVICE_ATTR(fw_ver, S_IRUGO, usnic_ib_show_fw_ver, NULL);
196 static DEVICE_ATTR(board_id, S_IRUGO, usnic_ib_show_board, NULL);
197 static DEVICE_ATTR(config, S_IRUGO, usnic_ib_show_config, NULL);
198 static DEVICE_ATTR(iface, S_IRUGO, usnic_ib_show_iface, NULL);
199 static DEVICE_ATTR(max_vf, S_IRUGO, usnic_ib_show_max_vf, NULL);
200 static DEVICE_ATTR(qp_per_vf, S_IRUGO, usnic_ib_show_qp_per_vf, NULL);
201 static DEVICE_ATTR(cq_per_vf, S_IRUGO, usnic_ib_show_cq_per_vf, NULL);
203 static struct device_attribute *usnic_class_attributes[] = {
213 struct qpn_attribute {
214 struct attribute attr;
215 ssize_t (*show)(struct usnic_ib_qp_grp *, char *buf);
219 * Definitions for supporting QPN entries in sysfs
222 usnic_ib_qpn_attr_show(struct kobject *kobj, struct attribute *attr, char *buf)
224 struct usnic_ib_qp_grp *qp_grp;
225 struct qpn_attribute *qpn_attr;
227 qp_grp = container_of(kobj, struct usnic_ib_qp_grp, kobj);
228 qpn_attr = container_of(attr, struct qpn_attribute, attr);
230 return qpn_attr->show(qp_grp, buf);
233 static const struct sysfs_ops usnic_ib_qpn_sysfs_ops = {
234 .show = usnic_ib_qpn_attr_show
237 #define QPN_ATTR_RO(NAME) \
238 struct qpn_attribute qpn_attr_##NAME = __ATTR_RO(NAME)
240 static ssize_t context_show(struct usnic_ib_qp_grp *qp_grp, char *buf)
242 return scnprintf(buf, PAGE_SIZE, "0x%p\n", qp_grp->ctx);
245 static ssize_t summary_show(struct usnic_ib_qp_grp *qp_grp, char *buf)
250 struct usnic_vnic_res_chunk *res_chunk;
251 struct usnic_vnic_res *vnic_res;
256 n = scnprintf(ptr, left,
257 "QPN: %d State: (%s) PID: %u VF Idx: %hu ",
259 usnic_ib_qp_grp_state_to_string(qp_grp->state),
261 usnic_vnic_get_index(qp_grp->vf->vnic));
262 UPDATE_PTR_LEFT(n, ptr, left);
264 for (i = 0; qp_grp->res_chunk_list[i]; i++) {
265 res_chunk = qp_grp->res_chunk_list[i];
266 for (j = 0; j < res_chunk->cnt; j++) {
267 vnic_res = res_chunk->res[j];
268 n = scnprintf(ptr, left, "%s[%d] ",
269 usnic_vnic_res_type_to_str(vnic_res->type),
271 UPDATE_PTR_LEFT(n, ptr, left);
275 n = scnprintf(ptr, left, "\n");
276 UPDATE_PTR_LEFT(n, ptr, left);
281 static QPN_ATTR_RO(context);
282 static QPN_ATTR_RO(summary);
284 static struct attribute *usnic_ib_qpn_default_attrs[] = {
285 &qpn_attr_context.attr,
286 &qpn_attr_summary.attr,
290 static struct kobj_type usnic_ib_qpn_type = {
291 .sysfs_ops = &usnic_ib_qpn_sysfs_ops,
292 .default_attrs = usnic_ib_qpn_default_attrs
295 int usnic_ib_sysfs_register_usdev(struct usnic_ib_dev *us_ibdev)
299 for (i = 0; i < ARRAY_SIZE(usnic_class_attributes); ++i) {
300 err = device_create_file(&us_ibdev->ib_dev.dev,
301 usnic_class_attributes[i]);
303 usnic_err("Failed to create device file %d for %s eith err %d",
304 i, us_ibdev->ib_dev.name, err);
309 /* create kernel object for looking at individual QPs */
310 kobject_get(&us_ibdev->ib_dev.dev.kobj);
311 us_ibdev->qpn_kobj = kobject_create_and_add("qpn",
312 &us_ibdev->ib_dev.dev.kobj);
313 if (us_ibdev->qpn_kobj == NULL) {
314 kobject_put(&us_ibdev->ib_dev.dev.kobj);
321 void usnic_ib_sysfs_unregister_usdev(struct usnic_ib_dev *us_ibdev)
324 for (i = 0; i < ARRAY_SIZE(usnic_class_attributes); ++i) {
325 device_remove_file(&us_ibdev->ib_dev.dev,
326 usnic_class_attributes[i]);
329 kobject_put(us_ibdev->qpn_kobj);
332 void usnic_ib_sysfs_qpn_add(struct usnic_ib_qp_grp *qp_grp)
334 struct usnic_ib_dev *us_ibdev;
337 us_ibdev = qp_grp->vf->pf;
339 err = kobject_init_and_add(&qp_grp->kobj, &usnic_ib_qpn_type,
340 kobject_get(us_ibdev->qpn_kobj),
341 "%d", qp_grp->grp_id);
343 kobject_put(us_ibdev->qpn_kobj);
348 void usnic_ib_sysfs_qpn_remove(struct usnic_ib_qp_grp *qp_grp)
350 struct usnic_ib_dev *us_ibdev;
352 us_ibdev = qp_grp->vf->pf;
354 kobject_put(&qp_grp->kobj);
355 kobject_put(us_ibdev->qpn_kobj);