1 // SPDX-License-Identifier: GPL-2.0 or Linux-OpenIB
2 /* Copyright (c) 2015 - 2024 Intel Corporation */
3
4 #include "main.h"
5 #include <linux/net/intel/iidc_rdma_ice.h>
6
icrdma_prep_tc_change(struct irdma_device * iwdev)7 static void icrdma_prep_tc_change(struct irdma_device *iwdev)
8 {
9 iwdev->vsi.tc_change_pending = true;
10 irdma_sc_suspend_resume_qps(&iwdev->vsi, IRDMA_OP_SUSPEND);
11
12 /* Wait for all qp's to suspend */
13 wait_event_timeout(iwdev->suspend_wq,
14 !atomic_read(&iwdev->vsi.qp_suspend_reqs),
15 msecs_to_jiffies(IRDMA_EVENT_TIMEOUT_MS));
16 irdma_ws_reset(&iwdev->vsi);
17 }
18
icrdma_fill_qos_info(struct irdma_l2params * l2params,struct iidc_rdma_qos_params * qos_info)19 static void icrdma_fill_qos_info(struct irdma_l2params *l2params,
20 struct iidc_rdma_qos_params *qos_info)
21 {
22 int i;
23
24 l2params->num_tc = qos_info->num_tc;
25 l2params->vsi_prio_type = qos_info->vport_priority_type;
26 l2params->vsi_rel_bw = qos_info->vport_relative_bw;
27 for (i = 0; i < l2params->num_tc; i++) {
28 l2params->tc_info[i].egress_virt_up =
29 qos_info->tc_info[i].egress_virt_up;
30 l2params->tc_info[i].ingress_virt_up =
31 qos_info->tc_info[i].ingress_virt_up;
32 l2params->tc_info[i].prio_type = qos_info->tc_info[i].prio_type;
33 l2params->tc_info[i].rel_bw = qos_info->tc_info[i].rel_bw;
34 l2params->tc_info[i].tc_ctx = qos_info->tc_info[i].tc_ctx;
35 }
36 for (i = 0; i < IIDC_MAX_USER_PRIORITY; i++)
37 l2params->up2tc[i] = qos_info->up2tc[i];
38 if (qos_info->pfc_mode == IIDC_DSCP_PFC_MODE) {
39 l2params->dscp_mode = true;
40 memcpy(l2params->dscp_map, qos_info->dscp_map, sizeof(l2params->dscp_map));
41 }
42 }
43
icrdma_iidc_event_handler(struct iidc_rdma_core_dev_info * cdev_info,struct iidc_rdma_event * event)44 static void icrdma_iidc_event_handler(struct iidc_rdma_core_dev_info *cdev_info,
45 struct iidc_rdma_event *event)
46 {
47 struct irdma_device *iwdev = dev_get_drvdata(&cdev_info->adev->dev);
48 struct irdma_l2params l2params = {};
49
50 if (*event->type & BIT(IIDC_RDMA_EVENT_AFTER_MTU_CHANGE)) {
51 ibdev_dbg(&iwdev->ibdev, "CLNT: new MTU = %d\n", iwdev->netdev->mtu);
52 if (iwdev->vsi.mtu != iwdev->netdev->mtu) {
53 l2params.mtu = iwdev->netdev->mtu;
54 l2params.mtu_changed = true;
55 irdma_log_invalid_mtu(l2params.mtu, &iwdev->rf->sc_dev);
56 irdma_change_l2params(&iwdev->vsi, &l2params);
57 }
58 } else if (*event->type & BIT(IIDC_RDMA_EVENT_BEFORE_TC_CHANGE)) {
59 if (iwdev->vsi.tc_change_pending)
60 return;
61
62 icrdma_prep_tc_change(iwdev);
63 } else if (*event->type & BIT(IIDC_RDMA_EVENT_AFTER_TC_CHANGE)) {
64 struct iidc_rdma_priv_dev_info *idc_priv = cdev_info->iidc_priv;
65
66 if (!iwdev->vsi.tc_change_pending)
67 return;
68
69 l2params.tc_changed = true;
70 ibdev_dbg(&iwdev->ibdev, "CLNT: TC Change\n");
71
72 icrdma_fill_qos_info(&l2params, &idc_priv->qos_info);
73 if (iwdev->rf->protocol_used != IRDMA_IWARP_PROTOCOL_ONLY)
74 iwdev->dcb_vlan_mode =
75 l2params.num_tc > 1 && !l2params.dscp_mode;
76 irdma_change_l2params(&iwdev->vsi, &l2params);
77 } else if (*event->type & BIT(IIDC_RDMA_EVENT_CRIT_ERR)) {
78 ibdev_warn(&iwdev->ibdev, "ICE OICR event notification: oicr = 0x%08x\n",
79 event->reg);
80 if (event->reg & IRDMAPFINT_OICR_PE_CRITERR_M) {
81 u32 pe_criterr;
82
83 pe_criterr = readl(iwdev->rf->sc_dev.hw_regs[IRDMA_GLPE_CRITERR]);
84 #define IRDMA_Q1_RESOURCE_ERR 0x0001024d
85 if (pe_criterr != IRDMA_Q1_RESOURCE_ERR) {
86 ibdev_err(&iwdev->ibdev, "critical PE Error, GLPE_CRITERR=0x%08x\n",
87 pe_criterr);
88 iwdev->rf->reset = true;
89 } else {
90 ibdev_warn(&iwdev->ibdev, "Q1 Resource Check\n");
91 }
92 }
93 if (event->reg & IRDMAPFINT_OICR_HMC_ERR_M) {
94 ibdev_err(&iwdev->ibdev, "HMC Error\n");
95 iwdev->rf->reset = true;
96 }
97 if (event->reg & IRDMAPFINT_OICR_PE_PUSH_M) {
98 ibdev_err(&iwdev->ibdev, "PE Push Error\n");
99 iwdev->rf->reset = true;
100 }
101 if (iwdev->rf->reset)
102 iwdev->rf->gen_ops.request_reset(iwdev->rf);
103 }
104 }
105
106 /**
107 * icrdma_lan_register_qset - Register qset with LAN driver
108 * @vsi: vsi structure
109 * @tc_node: Traffic class node
110 */
icrdma_lan_register_qset(struct irdma_sc_vsi * vsi,struct irdma_ws_node * tc_node)111 static int icrdma_lan_register_qset(struct irdma_sc_vsi *vsi,
112 struct irdma_ws_node *tc_node)
113 {
114 struct irdma_device *iwdev = vsi->back_vsi;
115 struct iidc_rdma_core_dev_info *cdev_info = iwdev->rf->cdev;
116 struct iidc_rdma_qset_params qset = {};
117 int ret;
118
119 qset.qs_handle = tc_node->qs_handle;
120 qset.tc = tc_node->traffic_class;
121 qset.vport_id = vsi->vsi_idx;
122 ret = ice_add_rdma_qset(cdev_info, &qset);
123 if (ret) {
124 ibdev_dbg(&iwdev->ibdev, "WS: LAN alloc_res for rdma qset failed.\n");
125 return ret;
126 }
127
128 tc_node->l2_sched_node_id = qset.teid;
129 vsi->qos[tc_node->user_pri].l2_sched_node_id = qset.teid;
130
131 return 0;
132 }
133
134 /**
135 * icrdma_lan_unregister_qset - Unregister qset with LAN driver
136 * @vsi: vsi structure
137 * @tc_node: Traffic class node
138 */
icrdma_lan_unregister_qset(struct irdma_sc_vsi * vsi,struct irdma_ws_node * tc_node)139 static void icrdma_lan_unregister_qset(struct irdma_sc_vsi *vsi,
140 struct irdma_ws_node *tc_node)
141 {
142 struct irdma_device *iwdev = vsi->back_vsi;
143 struct iidc_rdma_core_dev_info *cdev_info = iwdev->rf->cdev;
144 struct iidc_rdma_qset_params qset = {};
145
146 qset.qs_handle = tc_node->qs_handle;
147 qset.tc = tc_node->traffic_class;
148 qset.vport_id = vsi->vsi_idx;
149 qset.teid = tc_node->l2_sched_node_id;
150
151 if (ice_del_rdma_qset(cdev_info, &qset))
152 ibdev_dbg(&iwdev->ibdev, "WS: LAN free_res for rdma qset failed.\n");
153 }
154
155 /**
156 * icrdma_request_reset - Request a reset
157 * @rf: RDMA PCI function
158 */
icrdma_request_reset(struct irdma_pci_f * rf)159 static void icrdma_request_reset(struct irdma_pci_f *rf)
160 {
161 ibdev_warn(&rf->iwdev->ibdev, "Requesting a reset\n");
162 ice_rdma_request_reset(rf->cdev, IIDC_FUNC_RESET);
163 }
164
icrdma_init_interrupts(struct irdma_pci_f * rf,struct iidc_rdma_core_dev_info * cdev)165 static int icrdma_init_interrupts(struct irdma_pci_f *rf, struct iidc_rdma_core_dev_info *cdev)
166 {
167 int i;
168
169 rf->msix_count = num_online_cpus() + IRDMA_NUM_AEQ_MSIX;
170 rf->msix_entries = kcalloc(rf->msix_count, sizeof(*rf->msix_entries),
171 GFP_KERNEL);
172 if (!rf->msix_entries)
173 return -ENOMEM;
174
175 for (i = 0; i < rf->msix_count; i++)
176 if (ice_alloc_rdma_qvector(cdev, &rf->msix_entries[i]))
177 break;
178
179 if (i < IRDMA_MIN_MSIX) {
180 while (--i >= 0)
181 ice_free_rdma_qvector(cdev, &rf->msix_entries[i]);
182
183 kfree(rf->msix_entries);
184 return -ENOMEM;
185 }
186
187 rf->msix_count = i;
188
189 return 0;
190 }
191
icrdma_deinit_interrupts(struct irdma_pci_f * rf,struct iidc_rdma_core_dev_info * cdev)192 static void icrdma_deinit_interrupts(struct irdma_pci_f *rf, struct iidc_rdma_core_dev_info *cdev)
193 {
194 int i;
195
196 for (i = 0; i < rf->msix_count; i++)
197 ice_free_rdma_qvector(cdev, &rf->msix_entries[i]);
198
199 kfree(rf->msix_entries);
200 }
201
icrdma_fill_device_info(struct irdma_device * iwdev,struct iidc_rdma_core_dev_info * cdev_info)202 static void icrdma_fill_device_info(struct irdma_device *iwdev,
203 struct iidc_rdma_core_dev_info *cdev_info)
204 {
205 struct iidc_rdma_priv_dev_info *idc_priv = cdev_info->iidc_priv;
206 struct irdma_pci_f *rf = iwdev->rf;
207
208 rf->sc_dev.hw = &rf->hw;
209 rf->iwdev = iwdev;
210 rf->cdev = cdev_info;
211 rf->hw.hw_addr = idc_priv->hw_addr;
212 rf->pcidev = cdev_info->pdev;
213 rf->hw.device = &rf->pcidev->dev;
214 rf->pf_id = idc_priv->pf_id;
215 rf->rdma_ver = IRDMA_GEN_2;
216 rf->sc_dev.hw_attrs.uk_attrs.hw_rev = IRDMA_GEN_2;
217 rf->sc_dev.is_pf = true;
218 rf->sc_dev.privileged = true;
219
220 rf->gen_ops.register_qset = icrdma_lan_register_qset;
221 rf->gen_ops.unregister_qset = icrdma_lan_unregister_qset;
222
223 rf->default_vsi.vsi_idx = idc_priv->vport_id;
224 rf->protocol_used =
225 cdev_info->rdma_protocol == IIDC_RDMA_PROTOCOL_ROCEV2 ?
226 IRDMA_ROCE_PROTOCOL_ONLY : IRDMA_IWARP_PROTOCOL_ONLY;
227 rf->rsrc_profile = IRDMA_HMC_PROFILE_DEFAULT;
228 rf->rst_to = IRDMA_RST_TIMEOUT_HZ;
229 rf->gen_ops.request_reset = icrdma_request_reset;
230 rf->limits_sel = 7;
231 mutex_init(&rf->ah_tbl_lock);
232
233 iwdev->netdev = idc_priv->netdev;
234 iwdev->vsi_num = idc_priv->vport_id;
235 iwdev->init_state = INITIAL_STATE;
236 iwdev->roce_cwnd = IRDMA_ROCE_CWND_DEFAULT;
237 iwdev->roce_ackcreds = IRDMA_ROCE_ACKCREDS_DEFAULT;
238 iwdev->rcv_wnd = IRDMA_CM_DEFAULT_RCV_WND_SCALED;
239 iwdev->rcv_wscale = IRDMA_CM_DEFAULT_RCV_WND_SCALE;
240 if (iwdev->rf->protocol_used != IRDMA_IWARP_PROTOCOL_ONLY)
241 iwdev->roce_mode = true;
242 }
243
icrdma_probe(struct auxiliary_device * aux_dev,const struct auxiliary_device_id * id)244 static int icrdma_probe(struct auxiliary_device *aux_dev, const struct auxiliary_device_id *id)
245 {
246 struct iidc_rdma_core_auxiliary_dev *iidc_adev;
247 struct iidc_rdma_core_dev_info *cdev_info;
248 struct iidc_rdma_priv_dev_info *idc_priv;
249 struct irdma_l2params l2params = {};
250 struct irdma_device *iwdev;
251 struct irdma_pci_f *rf;
252 int err;
253
254 iidc_adev = container_of(aux_dev, struct iidc_rdma_core_auxiliary_dev, adev);
255 cdev_info = iidc_adev->cdev_info;
256 idc_priv = cdev_info->iidc_priv;
257
258 iwdev = ib_alloc_device(irdma_device, ibdev);
259 if (!iwdev)
260 return -ENOMEM;
261 iwdev->rf = kzalloc(sizeof(*rf), GFP_KERNEL);
262 if (!iwdev->rf) {
263 ib_dealloc_device(&iwdev->ibdev);
264 return -ENOMEM;
265 }
266
267 icrdma_fill_device_info(iwdev, cdev_info);
268 rf = iwdev->rf;
269
270 err = icrdma_init_interrupts(rf, cdev_info);
271 if (err)
272 goto err_init_interrupts;
273
274 err = irdma_ctrl_init_hw(rf);
275 if (err)
276 goto err_ctrl_init;
277
278 l2params.mtu = iwdev->netdev->mtu;
279 icrdma_fill_qos_info(&l2params, &idc_priv->qos_info);
280 if (iwdev->rf->protocol_used != IRDMA_IWARP_PROTOCOL_ONLY)
281 iwdev->dcb_vlan_mode = l2params.num_tc > 1 && !l2params.dscp_mode;
282
283 err = irdma_rt_init_hw(iwdev, &l2params);
284 if (err)
285 goto err_rt_init;
286
287 err = irdma_ib_register_device(iwdev);
288 if (err)
289 goto err_ibreg;
290
291 ice_rdma_update_vsi_filter(cdev_info, iwdev->vsi_num, true);
292
293 ibdev_dbg(&iwdev->ibdev, "INIT: Gen2 PF[%d] device probe success\n", PCI_FUNC(rf->pcidev->devfn));
294 auxiliary_set_drvdata(aux_dev, iwdev);
295
296 return 0;
297
298 err_ibreg:
299 irdma_rt_deinit_hw(iwdev);
300 err_rt_init:
301 irdma_ctrl_deinit_hw(rf);
302 err_ctrl_init:
303 icrdma_deinit_interrupts(rf, cdev_info);
304 err_init_interrupts:
305 mutex_destroy(&rf->ah_tbl_lock);
306 kfree(rf);
307 ib_dealloc_device(&iwdev->ibdev);
308
309 return err;
310 }
311
icrdma_remove(struct auxiliary_device * aux_dev)312 static void icrdma_remove(struct auxiliary_device *aux_dev)
313 {
314 struct iidc_rdma_core_auxiliary_dev *idc_adev =
315 container_of(aux_dev, struct iidc_rdma_core_auxiliary_dev, adev);
316 struct iidc_rdma_core_dev_info *cdev_info = idc_adev->cdev_info;
317 struct irdma_device *iwdev = auxiliary_get_drvdata(aux_dev);
318 u8 rdma_ver = iwdev->rf->rdma_ver;
319
320 ice_rdma_update_vsi_filter(cdev_info, iwdev->vsi_num, false);
321 irdma_ib_unregister_device(iwdev);
322 icrdma_deinit_interrupts(iwdev->rf, cdev_info);
323 mutex_destroy(&iwdev->rf->ah_tbl_lock);
324
325 kfree(iwdev->rf);
326
327 pr_debug("INIT: Gen[%d] func[%d] device remove success\n",
328 rdma_ver, PCI_FUNC(cdev_info->pdev->devfn));
329 }
330
331 static const struct auxiliary_device_id icrdma_auxiliary_id_table[] = {
332 {.name = "ice.iwarp", },
333 {.name = "ice.roce", },
334 {},
335 };
336
337 MODULE_DEVICE_TABLE(auxiliary, icrdma_auxiliary_id_table);
338
339 struct iidc_rdma_core_auxiliary_drv icrdma_core_auxiliary_drv = {
340 .adrv = {
341 .name = "gen_2",
342 .id_table = icrdma_auxiliary_id_table,
343 .probe = icrdma_probe,
344 .remove = icrdma_remove,
345 },
346 .event_handler = icrdma_iidc_event_handler,
347 };
348