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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_DESCRIPTION(OCRDMA_ROCE_DRV_DESC " " OCRDMA_ROCE_DRV_VERSION);
62MODULE_AUTHOR("Emulex Corporation");
63MODULE_LICENSE("Dual BSD/GPL");
64
65static DEFINE_IDR(ocrdma_dev_id);
66
67void ocrdma_get_guid(struct ocrdma_dev *dev, u8 *guid)
68{
69 u8 mac_addr[6];
70
71 memcpy(&mac_addr[0], &dev->nic_info.mac_addr[0], ETH_ALEN);
72 guid[0] = mac_addr[0] ^ 2;
73 guid[1] = mac_addr[1];
74 guid[2] = mac_addr[2];
75 guid[3] = 0xff;
76 guid[4] = 0xfe;
77 guid[5] = mac_addr[3];
78 guid[6] = mac_addr[4];
79 guid[7] = mac_addr[5];
80}
81static enum rdma_link_layer ocrdma_link_layer(struct ib_device *device,
82 u8 port_num)
83{
84 return IB_LINK_LAYER_ETHERNET;
85}
86
87static int ocrdma_port_immutable(struct ib_device *ibdev, u8 port_num,
88 struct ib_port_immutable *immutable)
89{
90 struct ib_port_attr attr;
91 struct ocrdma_dev *dev;
92 int err;
93
94 dev = get_ocrdma_dev(ibdev);
95 immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE;
96 if (ocrdma_is_udp_encap_supported(dev))
97 immutable->core_cap_flags |= RDMA_CORE_CAP_PROT_ROCE_UDP_ENCAP;
98
99 err = ib_query_port(ibdev, port_num, &attr);
100 if (err)
101 return err;
102
103 immutable->pkey_tbl_len = attr.pkey_tbl_len;
104 immutable->gid_tbl_len = attr.gid_tbl_len;
105 immutable->max_mad_size = IB_MGMT_MAD_SIZE;
106
107 return 0;
108}
109
110static void get_dev_fw_str(struct ib_device *device, char *str)
111{
112 struct ocrdma_dev *dev = get_ocrdma_dev(device);
113
114 snprintf(str, IB_FW_VERSION_NAME_MAX, "%s", &dev->attr.fw_ver[0]);
115}
116
117
118static ssize_t hw_rev_show(struct device *device,
119 struct device_attribute *attr, char *buf)
120{
121 struct ocrdma_dev *dev = dev_get_drvdata(device);
122
123 return scnprintf(buf, PAGE_SIZE, "0x%x\n", dev->nic_info.pdev->vendor);
124}
125static DEVICE_ATTR_RO(hw_rev);
126
127static ssize_t hca_type_show(struct device *device,
128 struct device_attribute *attr, char *buf)
129{
130 struct ocrdma_dev *dev = dev_get_drvdata(device);
131
132 return scnprintf(buf, PAGE_SIZE, "%s\n", &dev->model_number[0]);
133}
134static DEVICE_ATTR_RO(hca_type);
135
136static struct attribute *ocrdma_attributes[] = {
137 &dev_attr_hw_rev.attr,
138 &dev_attr_hca_type.attr,
139 NULL
140};
141
142static const struct attribute_group ocrdma_attr_group = {
143 .attrs = ocrdma_attributes,
144};
145
146static int ocrdma_register_device(struct ocrdma_dev *dev)
147{
148 ocrdma_get_guid(dev, (u8 *)&dev->ibdev.node_guid);
149 BUILD_BUG_ON(sizeof(OCRDMA_NODE_DESC) > IB_DEVICE_NODE_DESC_MAX);
150 memcpy(dev->ibdev.node_desc, OCRDMA_NODE_DESC,
151 sizeof(OCRDMA_NODE_DESC));
152 dev->ibdev.owner = THIS_MODULE;
153 dev->ibdev.uverbs_abi_ver = OCRDMA_ABI_VERSION;
154 dev->ibdev.uverbs_cmd_mask =
155 OCRDMA_UVERBS(GET_CONTEXT) |
156 OCRDMA_UVERBS(QUERY_DEVICE) |
157 OCRDMA_UVERBS(QUERY_PORT) |
158 OCRDMA_UVERBS(ALLOC_PD) |
159 OCRDMA_UVERBS(DEALLOC_PD) |
160 OCRDMA_UVERBS(REG_MR) |
161 OCRDMA_UVERBS(DEREG_MR) |
162 OCRDMA_UVERBS(CREATE_COMP_CHANNEL) |
163 OCRDMA_UVERBS(CREATE_CQ) |
164 OCRDMA_UVERBS(RESIZE_CQ) |
165 OCRDMA_UVERBS(DESTROY_CQ) |
166 OCRDMA_UVERBS(REQ_NOTIFY_CQ) |
167 OCRDMA_UVERBS(CREATE_QP) |
168 OCRDMA_UVERBS(MODIFY_QP) |
169 OCRDMA_UVERBS(QUERY_QP) |
170 OCRDMA_UVERBS(DESTROY_QP) |
171 OCRDMA_UVERBS(POLL_CQ) |
172 OCRDMA_UVERBS(POST_SEND) |
173 OCRDMA_UVERBS(POST_RECV);
174
175 dev->ibdev.uverbs_cmd_mask |=
176 OCRDMA_UVERBS(CREATE_AH) |
177 OCRDMA_UVERBS(MODIFY_AH) |
178 OCRDMA_UVERBS(QUERY_AH) |
179 OCRDMA_UVERBS(DESTROY_AH);
180
181 dev->ibdev.node_type = RDMA_NODE_IB_CA;
182 dev->ibdev.phys_port_cnt = 1;
183 dev->ibdev.num_comp_vectors = dev->eq_cnt;
184
185
186 dev->ibdev.query_device = ocrdma_query_device;
187 dev->ibdev.query_port = ocrdma_query_port;
188 dev->ibdev.modify_port = ocrdma_modify_port;
189 dev->ibdev.get_netdev = ocrdma_get_netdev;
190 dev->ibdev.get_link_layer = ocrdma_link_layer;
191 dev->ibdev.alloc_pd = ocrdma_alloc_pd;
192 dev->ibdev.dealloc_pd = ocrdma_dealloc_pd;
193
194 dev->ibdev.create_cq = ocrdma_create_cq;
195 dev->ibdev.destroy_cq = ocrdma_destroy_cq;
196 dev->ibdev.resize_cq = ocrdma_resize_cq;
197
198 dev->ibdev.create_qp = ocrdma_create_qp;
199 dev->ibdev.modify_qp = ocrdma_modify_qp;
200 dev->ibdev.query_qp = ocrdma_query_qp;
201 dev->ibdev.destroy_qp = ocrdma_destroy_qp;
202
203 dev->ibdev.query_pkey = ocrdma_query_pkey;
204 dev->ibdev.create_ah = ocrdma_create_ah;
205 dev->ibdev.destroy_ah = ocrdma_destroy_ah;
206 dev->ibdev.query_ah = ocrdma_query_ah;
207
208 dev->ibdev.poll_cq = ocrdma_poll_cq;
209 dev->ibdev.post_send = ocrdma_post_send;
210 dev->ibdev.post_recv = ocrdma_post_recv;
211 dev->ibdev.req_notify_cq = ocrdma_arm_cq;
212
213 dev->ibdev.get_dma_mr = ocrdma_get_dma_mr;
214 dev->ibdev.dereg_mr = ocrdma_dereg_mr;
215 dev->ibdev.reg_user_mr = ocrdma_reg_user_mr;
216
217 dev->ibdev.alloc_mr = ocrdma_alloc_mr;
218 dev->ibdev.map_mr_sg = ocrdma_map_mr_sg;
219
220
221 dev->ibdev.alloc_ucontext = ocrdma_alloc_ucontext;
222 dev->ibdev.dealloc_ucontext = ocrdma_dealloc_ucontext;
223 dev->ibdev.mmap = ocrdma_mmap;
224 dev->ibdev.dev.parent = &dev->nic_info.pdev->dev;
225
226 dev->ibdev.process_mad = ocrdma_process_mad;
227 dev->ibdev.get_port_immutable = ocrdma_port_immutable;
228 dev->ibdev.get_dev_fw_str = get_dev_fw_str;
229
230 if (ocrdma_get_asic_type(dev) == OCRDMA_ASIC_GEN_SKH_R) {
231 dev->ibdev.uverbs_cmd_mask |=
232 OCRDMA_UVERBS(CREATE_SRQ) |
233 OCRDMA_UVERBS(MODIFY_SRQ) |
234 OCRDMA_UVERBS(QUERY_SRQ) |
235 OCRDMA_UVERBS(DESTROY_SRQ) |
236 OCRDMA_UVERBS(POST_SRQ_RECV);
237
238 dev->ibdev.create_srq = ocrdma_create_srq;
239 dev->ibdev.modify_srq = ocrdma_modify_srq;
240 dev->ibdev.query_srq = ocrdma_query_srq;
241 dev->ibdev.destroy_srq = ocrdma_destroy_srq;
242 dev->ibdev.post_srq_recv = ocrdma_post_srq_recv;
243 }
244 rdma_set_device_sysfs_group(&dev->ibdev, &ocrdma_attr_group);
245 dev->ibdev.driver_id = RDMA_DRIVER_OCRDMA;
246 return ib_register_device(&dev->ibdev, "ocrdma%d", NULL);
247}
248
249static int ocrdma_alloc_resources(struct ocrdma_dev *dev)
250{
251 mutex_init(&dev->dev_lock);
252 dev->cq_tbl = kcalloc(OCRDMA_MAX_CQ, sizeof(struct ocrdma_cq *),
253 GFP_KERNEL);
254 if (!dev->cq_tbl)
255 goto alloc_err;
256
257 if (dev->attr.max_qp) {
258 dev->qp_tbl = kcalloc(OCRDMA_MAX_QP,
259 sizeof(struct ocrdma_qp *),
260 GFP_KERNEL);
261 if (!dev->qp_tbl)
262 goto alloc_err;
263 }
264
265 dev->stag_arr = kcalloc(OCRDMA_MAX_STAG, sizeof(u64), GFP_KERNEL);
266 if (dev->stag_arr == NULL)
267 goto alloc_err;
268
269 ocrdma_alloc_pd_pool(dev);
270
271 if (!ocrdma_alloc_stats_resources(dev)) {
272 pr_err("%s: stats resource allocation failed\n", __func__);
273 goto alloc_err;
274 }
275
276 spin_lock_init(&dev->av_tbl.lock);
277 spin_lock_init(&dev->flush_q_lock);
278 return 0;
279alloc_err:
280 pr_err("%s(%d) error.\n", __func__, dev->id);
281 return -ENOMEM;
282}
283
284static void ocrdma_free_resources(struct ocrdma_dev *dev)
285{
286 ocrdma_release_stats_resources(dev);
287 kfree(dev->stag_arr);
288 kfree(dev->qp_tbl);
289 kfree(dev->cq_tbl);
290}
291
292static struct ocrdma_dev *ocrdma_add(struct be_dev_info *dev_info)
293{
294 int status = 0;
295 u8 lstate = 0;
296 struct ocrdma_dev *dev;
297
298 dev = (struct ocrdma_dev *)ib_alloc_device(sizeof(struct ocrdma_dev));
299 if (!dev) {
300 pr_err("Unable to allocate ib device\n");
301 return NULL;
302 }
303 dev->mbx_cmd = kzalloc(sizeof(struct ocrdma_mqe_emb_cmd), GFP_KERNEL);
304 if (!dev->mbx_cmd)
305 goto idr_err;
306
307 memcpy(&dev->nic_info, dev_info, sizeof(*dev_info));
308 dev->id = idr_alloc(&ocrdma_dev_id, NULL, 0, 0, GFP_KERNEL);
309 if (dev->id < 0)
310 goto idr_err;
311
312 status = ocrdma_init_hw(dev);
313 if (status)
314 goto init_err;
315
316 status = ocrdma_alloc_resources(dev);
317 if (status)
318 goto alloc_err;
319
320 ocrdma_init_service_level(dev);
321 status = ocrdma_register_device(dev);
322 if (status)
323 goto alloc_err;
324
325
326 status = ocrdma_mbx_get_link_speed(dev, NULL, &lstate);
327 if (!status)
328 ocrdma_update_link_state(dev, lstate);
329
330
331 ocrdma_add_port_stats(dev);
332
333 INIT_DELAYED_WORK(&dev->eqd_work, ocrdma_eqd_set_task);
334 schedule_delayed_work(&dev->eqd_work, msecs_to_jiffies(1000));
335
336 pr_info("%s %s: %s \"%s\" port %d\n",
337 dev_name(&dev->nic_info.pdev->dev), hca_name(dev),
338 port_speed_string(dev), dev->model_number,
339 dev->hba_port_num);
340 pr_info("%s ocrdma%d driver loaded successfully\n",
341 dev_name(&dev->nic_info.pdev->dev), dev->id);
342 return dev;
343
344alloc_err:
345 ocrdma_free_resources(dev);
346 ocrdma_cleanup_hw(dev);
347init_err:
348 idr_remove(&ocrdma_dev_id, dev->id);
349idr_err:
350 kfree(dev->mbx_cmd);
351 ib_dealloc_device(&dev->ibdev);
352 pr_err("%s() leaving. ret=%d\n", __func__, status);
353 return NULL;
354}
355
356static void ocrdma_remove_free(struct ocrdma_dev *dev)
357{
358
359 idr_remove(&ocrdma_dev_id, dev->id);
360 kfree(dev->mbx_cmd);
361 ib_dealloc_device(&dev->ibdev);
362}
363
364static void ocrdma_remove(struct ocrdma_dev *dev)
365{
366
367
368
369 cancel_delayed_work_sync(&dev->eqd_work);
370 ib_unregister_device(&dev->ibdev);
371
372 ocrdma_rem_port_stats(dev);
373 ocrdma_free_resources(dev);
374 ocrdma_cleanup_hw(dev);
375 ocrdma_remove_free(dev);
376}
377
378static int ocrdma_dispatch_port_active(struct ocrdma_dev *dev)
379{
380 struct ib_event port_event;
381
382 port_event.event = IB_EVENT_PORT_ACTIVE;
383 port_event.element.port_num = 1;
384 port_event.device = &dev->ibdev;
385 ib_dispatch_event(&port_event);
386 return 0;
387}
388
389static int ocrdma_dispatch_port_error(struct ocrdma_dev *dev)
390{
391 struct ib_event err_event;
392
393 err_event.event = IB_EVENT_PORT_ERR;
394 err_event.element.port_num = 1;
395 err_event.device = &dev->ibdev;
396 ib_dispatch_event(&err_event);
397 return 0;
398}
399
400static void ocrdma_shutdown(struct ocrdma_dev *dev)
401{
402 ocrdma_dispatch_port_error(dev);
403 ocrdma_remove(dev);
404}
405
406
407
408
409
410static void ocrdma_event_handler(struct ocrdma_dev *dev, u32 event)
411{
412 switch (event) {
413 case BE_DEV_SHUTDOWN:
414 ocrdma_shutdown(dev);
415 break;
416 default:
417 break;
418 }
419}
420
421void ocrdma_update_link_state(struct ocrdma_dev *dev, u8 lstate)
422{
423 if (!(dev->flags & OCRDMA_FLAGS_LINK_STATUS_INIT)) {
424 dev->flags |= OCRDMA_FLAGS_LINK_STATUS_INIT;
425 if (!lstate)
426 return;
427 }
428
429 if (!lstate)
430 ocrdma_dispatch_port_error(dev);
431 else
432 ocrdma_dispatch_port_active(dev);
433}
434
435static struct ocrdma_driver ocrdma_drv = {
436 .name = "ocrdma_driver",
437 .add = ocrdma_add,
438 .remove = ocrdma_remove,
439 .state_change_handler = ocrdma_event_handler,
440 .be_abi_version = OCRDMA_BE_ROCE_ABI_VERSION,
441};
442
443static int __init ocrdma_init_module(void)
444{
445 int status;
446 const char tpmsg[] = "RoCE on OCE14xxx Adapters";
447
448 mark_tech_preview(tpmsg, THIS_MODULE);
449 ocrdma_init_debugfs();
450
451 status = be_roce_register_driver(&ocrdma_drv);
452 if (status)
453 goto err_be_reg;
454
455 return 0;
456
457err_be_reg:
458
459 return status;
460}
461
462static void __exit ocrdma_exit_module(void)
463{
464 be_roce_unregister_driver(&ocrdma_drv);
465 ocrdma_rem_debugfs();
466 idr_destroy(&ocrdma_dev_id);
467}
468
469module_init(ocrdma_init_module);
470module_exit(ocrdma_exit_module);
471
