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