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43#include <linux/module.h>
44#include <linux/idr.h>
45#include <rdma/ib_verbs.h>
46#include <rdma/ib_user_verbs.h>
47#include <rdma/ib_addr.h>
48#include <rdma/ib_mad.h>
49
50#include <linux/netdevice.h>
51#include <net/addrconf.h>
52
53#include "ocrdma.h"
54#include "ocrdma_verbs.h"
55#include "ocrdma_ah.h"
56#include "be_roce.h"
57#include "ocrdma_hw.h"
58#include "ocrdma_stats.h"
59#include <rdma/ocrdma-abi.h>
60
61MODULE_VERSION(OCRDMA_ROCE_DRV_VERSION);
62MODULE_DESCRIPTION(OCRDMA_ROCE_DRV_DESC " " OCRDMA_ROCE_DRV_VERSION);
63MODULE_AUTHOR("Emulex Corporation");
64MODULE_LICENSE("Dual BSD/GPL");
65
66static DEFINE_IDR(ocrdma_dev_id);
67
68void ocrdma_get_guid(struct ocrdma_dev *dev, u8 *guid)
69{
70 u8 mac_addr[6];
71
72 memcpy(&mac_addr[0], &dev->nic_info.mac_addr[0], ETH_ALEN);
73 guid[0] = mac_addr[0] ^ 2;
74 guid[1] = mac_addr[1];
75 guid[2] = mac_addr[2];
76 guid[3] = 0xff;
77 guid[4] = 0xfe;
78 guid[5] = mac_addr[3];
79 guid[6] = mac_addr[4];
80 guid[7] = mac_addr[5];
81}
82static enum rdma_link_layer ocrdma_link_layer(struct ib_device *device,
83 u8 port_num)
84{
85 return IB_LINK_LAYER_ETHERNET;
86}
87
88static int ocrdma_port_immutable(struct ib_device *ibdev, u8 port_num,
89 struct ib_port_immutable *immutable)
90{
91 struct ib_port_attr attr;
92 struct ocrdma_dev *dev;
93 int err;
94
95 dev = get_ocrdma_dev(ibdev);
96 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE;
97 if (ocrdma_is_udp_encap_supported(dev))
98 immutable->core_cap_flags |= RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP;
99
100 err = ib_query_port(ibdev, port_num, &attr);
101 if (err)
102 return err;
103
104 immutable->pkey_tbl_len = attr.pkey_tbl_len;
105 immutable->gid_tbl_len = attr.gid_tbl_len;
106 immutable->max_mad_size = IB_MGMT_MAD_SIZE;
107
108 return 0;
109}
110
111static void get_dev_fw_str(struct ib_device *device, char *str,
112 size_t str_len)
113{
114 struct ocrdma_dev *dev = get_ocrdma_dev(device);
115
116 snprintf(str, str_len, "%s", &dev->attr.fw_ver[0]);
117}
118
119static int ocrdma_register_device(struct ocrdma_dev *dev)
120{
121 strlcpy(dev->ibdev.name, "ocrdma%d", IB_DEVICE_NAME_MAX);
122 ocrdma_get_guid(dev, (u8 *)&dev->ibdev.node_guid);
123 BUILD_BUG_ON(sizeof(OCRDMA_NODE_DESC) > IB_DEVICE_NODE_DESC_MAX);
124 memcpy(dev->ibdev.node_desc, OCRDMA_NODE_DESC,
125 sizeof(OCRDMA_NODE_DESC));
126 dev->ibdev.owner = THIS_MODULE;
127 dev->ibdev.uverbs_abi_ver = OCRDMA_ABI_VERSION;
128 dev->ibdev.uverbs_cmd_mask =
129 OCRDMA_UVERBS(GET_CONTEXT) |
130 OCRDMA_UVERBS(QUERY_DEVICE) |
131 OCRDMA_UVERBS(QUERY_PORT) |
132 OCRDMA_UVERBS(ALLOC_PD) |
133 OCRDMA_UVERBS(DEALLOC_PD) |
134 OCRDMA_UVERBS(REG_MR) |
135 OCRDMA_UVERBS(DEREG_MR) |
136 OCRDMA_UVERBS(CREATE_COMP_CHANNEL) |
137 OCRDMA_UVERBS(CREATE_CQ) |
138 OCRDMA_UVERBS(RESIZE_CQ) |
139 OCRDMA_UVERBS(DESTROY_CQ) |
140 OCRDMA_UVERBS(REQ_NOTIFY_CQ) |
141 OCRDMA_UVERBS(CREATE_QP) |
142 OCRDMA_UVERBS(MODIFY_QP) |
143 OCRDMA_UVERBS(QUERY_QP) |
144 OCRDMA_UVERBS(DESTROY_QP) |
145 OCRDMA_UVERBS(POLL_CQ) |
146 OCRDMA_UVERBS(POST_SEND) |
147 OCRDMA_UVERBS(POST_RECV);
148
149 dev->ibdev.uverbs_cmd_mask |=
150 OCRDMA_UVERBS(CREATE_AH) |
151 OCRDMA_UVERBS(MODIFY_AH) |
152 OCRDMA_UVERBS(QUERY_AH) |
153 OCRDMA_UVERBS(DESTROY_AH);
154
155 dev->ibdev.node_type = RDMA_NODE_IB_CA;
156 dev->ibdev.phys_port_cnt = 1;
157 dev->ibdev.num_comp_vectors = dev->eq_cnt;
158
159
160 dev->ibdev.query_device = ocrdma_query_device;
161 dev->ibdev.query_port = ocrdma_query_port;
162 dev->ibdev.modify_port = ocrdma_modify_port;
163 dev->ibdev.query_gid = ocrdma_query_gid;
164 dev->ibdev.get_netdev = ocrdma_get_netdev;
165 dev->ibdev.add_gid = ocrdma_add_gid;
166 dev->ibdev.del_gid = ocrdma_del_gid;
167 dev->ibdev.get_link_layer = ocrdma_link_layer;
168 dev->ibdev.alloc_pd = ocrdma_alloc_pd;
169 dev->ibdev.dealloc_pd = ocrdma_dealloc_pd;
170
171 dev->ibdev.create_cq = ocrdma_create_cq;
172 dev->ibdev.destroy_cq = ocrdma_destroy_cq;
173 dev->ibdev.resize_cq = ocrdma_resize_cq;
174
175 dev->ibdev.create_qp = ocrdma_create_qp;
176 dev->ibdev.modify_qp = ocrdma_modify_qp;
177 dev->ibdev.query_qp = ocrdma_query_qp;
178 dev->ibdev.destroy_qp = ocrdma_destroy_qp;
179
180 dev->ibdev.query_pkey = ocrdma_query_pkey;
181 dev->ibdev.create_ah = ocrdma_create_ah;
182 dev->ibdev.destroy_ah = ocrdma_destroy_ah;
183 dev->ibdev.query_ah = ocrdma_query_ah;
184 dev->ibdev.modify_ah = ocrdma_modify_ah;
185
186 dev->ibdev.poll_cq = ocrdma_poll_cq;
187 dev->ibdev.post_send = ocrdma_post_send;
188 dev->ibdev.post_recv = ocrdma_post_recv;
189 dev->ibdev.req_notify_cq = ocrdma_arm_cq;
190
191 dev->ibdev.get_dma_mr = ocrdma_get_dma_mr;
192 dev->ibdev.dereg_mr = ocrdma_dereg_mr;
193 dev->ibdev.reg_user_mr = ocrdma_reg_user_mr;
194
195 dev->ibdev.alloc_mr = ocrdma_alloc_mr;
196 dev->ibdev.map_mr_sg = ocrdma_map_mr_sg;
197
198
199 dev->ibdev.alloc_ucontext = ocrdma_alloc_ucontext;
200 dev->ibdev.dealloc_ucontext = ocrdma_dealloc_ucontext;
201 dev->ibdev.mmap = ocrdma_mmap;
202 dev->ibdev.dev.parent = &dev->nic_info.pdev->dev;
203
204 dev->ibdev.process_mad = ocrdma_process_mad;
205 dev->ibdev.get_port_immutable = ocrdma_port_immutable;
206 dev->ibdev.get_dev_fw_str = get_dev_fw_str;
207
208 if (ocrdma_get_asic_type(dev) == OCRDMA_ASIC_GEN_SKH_R) {
209 dev->ibdev.uverbs_cmd_mask |=
210 OCRDMA_UVERBS(CREATE_SRQ) |
211 OCRDMA_UVERBS(MODIFY_SRQ) |
212 OCRDMA_UVERBS(QUERY_SRQ) |
213 OCRDMA_UVERBS(DESTROY_SRQ) |
214 OCRDMA_UVERBS(POST_SRQ_RECV);
215
216 dev->ibdev.create_srq = ocrdma_create_srq;
217 dev->ibdev.modify_srq = ocrdma_modify_srq;
218 dev->ibdev.query_srq = ocrdma_query_srq;
219 dev->ibdev.destroy_srq = ocrdma_destroy_srq;
220 dev->ibdev.post_srq_recv = ocrdma_post_srq_recv;
221 }
222 return ib_register_device(&dev->ibdev, NULL);
223}
224
225static int ocrdma_alloc_resources(struct ocrdma_dev *dev)
226{
227 mutex_init(&dev->dev_lock);
228 dev->cq_tbl = kzalloc(sizeof(struct ocrdma_cq *) *
229 OCRDMA_MAX_CQ, GFP_KERNEL);
230 if (!dev->cq_tbl)
231 goto alloc_err;
232
233 if (dev->attr.max_qp) {
234 dev->qp_tbl = kzalloc(sizeof(struct ocrdma_qp *) *
235 OCRDMA_MAX_QP, GFP_KERNEL);
236 if (!dev->qp_tbl)
237 goto alloc_err;
238 }
239
240 dev->stag_arr = kzalloc(sizeof(u64) * OCRDMA_MAX_STAG, GFP_KERNEL);
241 if (dev->stag_arr == NULL)
242 goto alloc_err;
243
244 ocrdma_alloc_pd_pool(dev);
245
246 if (!ocrdma_alloc_stats_resources(dev)) {
247 pr_err("%s: stats resource allocation failed\n", __func__);
248 goto alloc_err;
249 }
250
251 spin_lock_init(&dev->av_tbl.lock);
252 spin_lock_init(&dev->flush_q_lock);
253 return 0;
254alloc_err:
255 pr_err("%s(%d) error.\n", __func__, dev->id);
256 return -ENOMEM;
257}
258
259static void ocrdma_free_resources(struct ocrdma_dev *dev)
260{
261 ocrdma_release_stats_resources(dev);
262 kfree(dev->stag_arr);
263 kfree(dev->qp_tbl);
264 kfree(dev->cq_tbl);
265}
266
267
268static ssize_t show_rev(struct device *device, struct device_attribute *attr,
269 char *buf)
270{
271 struct ocrdma_dev *dev = dev_get_drvdata(device);
272
273 return scnprintf(buf, PAGE_SIZE, "0x%x\n", dev->nic_info.pdev->vendor);
274}
275
276static ssize_t show_hca_type(struct device *device,
277 struct device_attribute *attr, char *buf)
278{
279 struct ocrdma_dev *dev = dev_get_drvdata(device);
280
281 return scnprintf(buf, PAGE_SIZE, "%s\n", &dev->model_number[0]);
282}
283
284static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL);
285static DEVICE_ATTR(hca_type, S_IRUGO, show_hca_type, NULL);
286
287static struct device_attribute *ocrdma_attributes[] = {
288 &dev_attr_hw_rev,
289 &dev_attr_hca_type
290};
291
292static void ocrdma_remove_sysfiles(struct ocrdma_dev *dev)
293{
294 int i;
295
296 for (i = 0; i < ARRAY_SIZE(ocrdma_attributes); i++)
297 device_remove_file(&dev->ibdev.dev, ocrdma_attributes[i]);
298}
299
300static struct ocrdma_dev *ocrdma_add(struct be_dev_info *dev_info)
301{
302 int status = 0, i;
303 u8 lstate = 0;
304 struct ocrdma_dev *dev;
305
306 dev = (struct ocrdma_dev *)ib_alloc_device(sizeof(struct ocrdma_dev));
307 if (!dev) {
308 pr_err("Unable to allocate ib device\n");
309 return NULL;
310 }
311 dev->mbx_cmd = kzalloc(sizeof(struct ocrdma_mqe_emb_cmd), GFP_KERNEL);
312 if (!dev->mbx_cmd)
313 goto idr_err;
314
315 memcpy(&dev->nic_info, dev_info, sizeof(*dev_info));
316 dev->id = idr_alloc(&ocrdma_dev_id, NULL, 0, 0, GFP_KERNEL);
317 if (dev->id < 0)
318 goto idr_err;
319
320 status = ocrdma_init_hw(dev);
321 if (status)
322 goto init_err;
323
324 status = ocrdma_alloc_resources(dev);
325 if (status)
326 goto alloc_err;
327
328 ocrdma_init_service_level(dev);
329 status = ocrdma_register_device(dev);
330 if (status)
331 goto alloc_err;
332
333
334 status = ocrdma_mbx_get_link_speed(dev, NULL, &lstate);
335 if (!status)
336 ocrdma_update_link_state(dev, lstate);
337
338 for (i = 0; i < ARRAY_SIZE(ocrdma_attributes); i++)
339 if (device_create_file(&dev->ibdev.dev, ocrdma_attributes[i]))
340 goto sysfs_err;
341
342 ocrdma_add_port_stats(dev);
343
344 INIT_DELAYED_WORK(&dev->eqd_work, ocrdma_eqd_set_task);
345 schedule_delayed_work(&dev->eqd_work, msecs_to_jiffies(1000));
346
347 pr_info("%s %s: %s \"%s\" port %d\n",
348 dev_name(&dev->nic_info.pdev->dev), hca_name(dev),
349 port_speed_string(dev), dev->model_number,
350 dev->hba_port_num);
351 pr_info("%s ocrdma%d driver loaded successfully\n",
352 dev_name(&dev->nic_info.pdev->dev), dev->id);
353 return dev;
354
355sysfs_err:
356 ocrdma_remove_sysfiles(dev);
357alloc_err:
358 ocrdma_free_resources(dev);
359 ocrdma_cleanup_hw(dev);
360init_err:
361 idr_remove(&ocrdma_dev_id, dev->id);
362idr_err:
363 kfree(dev->mbx_cmd);
364 ib_dealloc_device(&dev->ibdev);
365 pr_err("%s() leaving. ret=%d\n", __func__, status);
366 return NULL;
367}
368
369static void ocrdma_remove_free(struct ocrdma_dev *dev)
370{
371
372 idr_remove(&ocrdma_dev_id, dev->id);
373 kfree(dev->mbx_cmd);
374 ib_dealloc_device(&dev->ibdev);
375}
376
377static void ocrdma_remove(struct ocrdma_dev *dev)
378{
379
380
381
382 cancel_delayed_work_sync(&dev->eqd_work);
383 ocrdma_remove_sysfiles(dev);
384 ib_unregister_device(&dev->ibdev);
385
386 ocrdma_rem_port_stats(dev);
387 ocrdma_free_resources(dev);
388 ocrdma_cleanup_hw(dev);
389 ocrdma_remove_free(dev);
390}
391
392static int ocrdma_dispatch_port_active(struct ocrdma_dev *dev)
393{
394 struct ib_event port_event;
395
396 port_event.event = IB_EVENT_PORT_ACTIVE;
397 port_event.element.port_num = 1;
398 port_event.device = &dev->ibdev;
399 ib_dispatch_event(&port_event);
400 return 0;
401}
402
403static int ocrdma_dispatch_port_error(struct ocrdma_dev *dev)
404{
405 struct ib_event err_event;
406
407 err_event.event = IB_EVENT_PORT_ERR;
408 err_event.element.port_num = 1;
409 err_event.device = &dev->ibdev;
410 ib_dispatch_event(&err_event);
411 return 0;
412}
413
414static void ocrdma_shutdown(struct ocrdma_dev *dev)
415{
416 ocrdma_dispatch_port_error(dev);
417 ocrdma_remove(dev);
418}
419
420
421
422
423
424static void ocrdma_event_handler(struct ocrdma_dev *dev, u32 event)
425{
426 switch (event) {
427 case BE_DEV_SHUTDOWN:
428 ocrdma_shutdown(dev);
429 break;
430 default:
431 break;
432 }
433}
434
435void ocrdma_update_link_state(struct ocrdma_dev *dev, u8 lstate)
436{
437 if (!(dev->flags & OCRDMA_FLAGS_LINK_STATUS_INIT)) {
438 dev->flags |= OCRDMA_FLAGS_LINK_STATUS_INIT;
439 if (!lstate)
440 return;
441 }
442
443 if (!lstate)
444 ocrdma_dispatch_port_error(dev);
445 else
446 ocrdma_dispatch_port_active(dev);
447}
448
449static struct ocrdma_driver ocrdma_drv = {
450 .name = "ocrdma_driver",
451 .add = ocrdma_add,
452 .remove = ocrdma_remove,
453 .state_change_handler = ocrdma_event_handler,
454 .be_abi_version = OCRDMA_BE_ROCE_ABI_VERSION,
455};
456
457static int __init ocrdma_init_module(void)
458{
459 int status;
460
461 ocrdma_init_debugfs();
462
463 status = be_roce_register_driver(&ocrdma_drv);
464 if (status)
465 goto err_be_reg;
466
467 return 0;
468
469err_be_reg:
470
471 return status;
472}
473
474static void __exit ocrdma_exit_module(void)
475{
476 be_roce_unregister_driver(&ocrdma_drv);
477 ocrdma_rem_debugfs();
478 idr_destroy(&ocrdma_dev_id);
479}
480
481module_init(ocrdma_init_module);
482module_exit(ocrdma_exit_module);
483
