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1/* Broadcom NetXtreme-C/E network driver.
2 *
3 * Copyright (c) 2016-2018 Broadcom Limited
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation.
8 */
9
10#include <linux/module.h>
11
12#include <linux/kernel.h>
13#include <linux/errno.h>
14#include <linux/interrupt.h>
15#include <linux/pci.h>
16#include <linux/netdevice.h>
17#include <linux/rtnetlink.h>
18#include <linux/bitops.h>
19#include <linux/irq.h>
20#include <asm/byteorder.h>
21#include <linux/bitmap.h>
22#include <linux/auxiliary_bus.h>
23
24#include "bnxt_hsi.h"
25#include "bnxt.h"
26#include "bnxt_hwrm.h"
27#include "bnxt_ulp.h"
28
29static DEFINE_IDA(bnxt_aux_dev_ids);
30
31static void bnxt_fill_msix_vecs(struct bnxt *bp, struct bnxt_msix_entry *ent)
32{
33 struct bnxt_en_dev *edev = bp->edev;
34 int num_msix, idx, i;
35
36 if (!edev->ulp_tbl->msix_requested) {
37 netdev_warn(bp->dev, "Requested MSI-X vectors insufficient\n");
38 return;
39 }
40 num_msix = edev->ulp_tbl->msix_requested;
41 idx = edev->ulp_tbl->msix_base;
42 for (i = 0; i < num_msix; i++) {
43 ent[i].vector = bp->irq_tbl[idx + i].vector;
44 ent[i].ring_idx = idx + i;
45 if (bp->flags & BNXT_FLAG_CHIP_P5_PLUS)
46 ent[i].db_offset = bp->db_offset;
47 else
48 ent[i].db_offset = (idx + i) * 0x80;
49 }
50}
51
52int bnxt_register_dev(struct bnxt_en_dev *edev,
53 struct bnxt_ulp_ops *ulp_ops,
54 void *handle)
55{
56 struct net_device *dev = edev->net;
57 struct bnxt *bp = netdev_priv(dev);
58 unsigned int max_stat_ctxs;
59 struct bnxt_ulp *ulp;
60
61 max_stat_ctxs = bnxt_get_max_func_stat_ctxs(bp);
62 if (max_stat_ctxs <= BNXT_MIN_ROCE_STAT_CTXS ||
63 bp->cp_nr_rings == max_stat_ctxs)
64 return -ENOMEM;
65
66 ulp = edev->ulp_tbl;
67 if (!ulp)
68 return -ENOMEM;
69
70 ulp->handle = handle;
71 rcu_assign_pointer(ulp->ulp_ops, ulp_ops);
72
73 if (test_bit(BNXT_STATE_OPEN, &bp->state))
74 bnxt_hwrm_vnic_cfg(bp, 0);
75
76 bnxt_fill_msix_vecs(bp, bp->edev->msix_entries);
77 edev->flags |= BNXT_EN_FLAG_MSIX_REQUESTED;
78 return 0;
79}
80EXPORT_SYMBOL(bnxt_register_dev);
81
82void bnxt_unregister_dev(struct bnxt_en_dev *edev)
83{
84 struct net_device *dev = edev->net;
85 struct bnxt *bp = netdev_priv(dev);
86 struct bnxt_ulp *ulp;
87 int i = 0;
88
89 ulp = edev->ulp_tbl;
90 if (ulp->msix_requested)
91 edev->flags &= ~BNXT_EN_FLAG_MSIX_REQUESTED;
92
93 if (ulp->max_async_event_id)
94 bnxt_hwrm_func_drv_rgtr(bp, NULL, 0, true);
95
96 RCU_INIT_POINTER(ulp->ulp_ops, NULL);
97 synchronize_rcu();
98 ulp->max_async_event_id = 0;
99 ulp->async_events_bmap = NULL;
100 while (atomic_read(&ulp->ref_count) != 0 && i < 10) {
101 msleep(100);
102 i++;
103 }
104 return;
105}
106EXPORT_SYMBOL(bnxt_unregister_dev);
107
108int bnxt_get_ulp_msix_num(struct bnxt *bp)
109{
110 u32 roce_msix = BNXT_VF(bp) ?
111 BNXT_MAX_VF_ROCE_MSIX : BNXT_MAX_ROCE_MSIX;
112
113 return ((bp->flags & BNXT_FLAG_ROCE_CAP) ?
114 min_t(u32, roce_msix, num_online_cpus()) : 0);
115}
116
117int bnxt_get_ulp_msix_base(struct bnxt *bp)
118{
119 if (bnxt_ulp_registered(bp->edev)) {
120 struct bnxt_en_dev *edev = bp->edev;
121
122 if (edev->ulp_tbl->msix_requested)
123 return edev->ulp_tbl->msix_base;
124 }
125 return 0;
126}
127
128int bnxt_get_ulp_stat_ctxs(struct bnxt *bp)
129{
130 if (bnxt_ulp_registered(bp->edev)) {
131 struct bnxt_en_dev *edev = bp->edev;
132
133 if (edev->ulp_tbl->msix_requested)
134 return BNXT_MIN_ROCE_STAT_CTXS;
135 }
136
137 return 0;
138}
139
140int bnxt_send_msg(struct bnxt_en_dev *edev,
141 struct bnxt_fw_msg *fw_msg)
142{
143 struct net_device *dev = edev->net;
144 struct bnxt *bp = netdev_priv(dev);
145 struct output *resp;
146 struct input *req;
147 u32 resp_len;
148 int rc;
149
150 if (bp->fw_reset_state)
151 return -EBUSY;
152
153 rc = hwrm_req_init(bp, req, 0 /* don't care */);
154 if (rc)
155 return rc;
156
157 rc = hwrm_req_replace(bp, req, fw_msg->msg, fw_msg->msg_len);
158 if (rc)
159 return rc;
160
161 hwrm_req_timeout(bp, req, fw_msg->timeout);
162 resp = hwrm_req_hold(bp, req);
163 rc = hwrm_req_send(bp, req);
164 resp_len = le16_to_cpu(resp->resp_len);
165 if (resp_len) {
166 if (fw_msg->resp_max_len < resp_len)
167 resp_len = fw_msg->resp_max_len;
168
169 memcpy(fw_msg->resp, resp, resp_len);
170 }
171 hwrm_req_drop(bp, req);
172 return rc;
173}
174EXPORT_SYMBOL(bnxt_send_msg);
175
176void bnxt_ulp_stop(struct bnxt *bp)
177{
178 struct bnxt_aux_priv *aux_priv = bp->aux_priv;
179 struct bnxt_en_dev *edev = bp->edev;
180
181 if (!edev)
182 return;
183
184 edev->flags |= BNXT_EN_FLAG_ULP_STOPPED;
185 if (aux_priv) {
186 struct auxiliary_device *adev;
187
188 adev = &aux_priv->aux_dev;
189 if (adev->dev.driver) {
190 struct auxiliary_driver *adrv;
191 pm_message_t pm = {};
192
193 adrv = to_auxiliary_drv(adev->dev.driver);
194 edev->en_state = bp->state;
195 adrv->suspend(adev, pm);
196 }
197 }
198}
199
200void bnxt_ulp_start(struct bnxt *bp, int err)
201{
202 struct bnxt_aux_priv *aux_priv = bp->aux_priv;
203 struct bnxt_en_dev *edev = bp->edev;
204
205 if (!edev)
206 return;
207
208 edev->flags &= ~BNXT_EN_FLAG_ULP_STOPPED;
209
210 if (err)
211 return;
212
213 if (aux_priv) {
214 struct auxiliary_device *adev;
215
216 adev = &aux_priv->aux_dev;
217 if (adev->dev.driver) {
218 struct auxiliary_driver *adrv;
219
220 adrv = to_auxiliary_drv(adev->dev.driver);
221 edev->en_state = bp->state;
222 adrv->resume(adev);
223 }
224 }
225
226}
227
228void bnxt_ulp_irq_stop(struct bnxt *bp)
229{
230 struct bnxt_en_dev *edev = bp->edev;
231 struct bnxt_ulp_ops *ops;
232
233 if (!edev || !(edev->flags & BNXT_EN_FLAG_MSIX_REQUESTED))
234 return;
235
236 if (bnxt_ulp_registered(bp->edev)) {
237 struct bnxt_ulp *ulp = edev->ulp_tbl;
238
239 if (!ulp->msix_requested)
240 return;
241
242 ops = rtnl_dereference(ulp->ulp_ops);
243 if (!ops || !ops->ulp_irq_stop)
244 return;
245 ops->ulp_irq_stop(ulp->handle);
246 }
247}
248
249void bnxt_ulp_irq_restart(struct bnxt *bp, int err)
250{
251 struct bnxt_en_dev *edev = bp->edev;
252 struct bnxt_ulp_ops *ops;
253
254 if (!edev || !(edev->flags & BNXT_EN_FLAG_MSIX_REQUESTED))
255 return;
256
257 if (bnxt_ulp_registered(bp->edev)) {
258 struct bnxt_ulp *ulp = edev->ulp_tbl;
259 struct bnxt_msix_entry *ent = NULL;
260
261 if (!ulp->msix_requested)
262 return;
263
264 ops = rtnl_dereference(ulp->ulp_ops);
265 if (!ops || !ops->ulp_irq_restart)
266 return;
267
268 if (!err) {
269 ent = kcalloc(ulp->msix_requested, sizeof(*ent),
270 GFP_KERNEL);
271 if (!ent)
272 return;
273 bnxt_fill_msix_vecs(bp, ent);
274 }
275 ops->ulp_irq_restart(ulp->handle, ent);
276 kfree(ent);
277 }
278}
279
280int bnxt_register_async_events(struct bnxt_en_dev *edev,
281 unsigned long *events_bmap,
282 u16 max_id)
283{
284 struct net_device *dev = edev->net;
285 struct bnxt *bp = netdev_priv(dev);
286 struct bnxt_ulp *ulp;
287
288 ulp = edev->ulp_tbl;
289 ulp->async_events_bmap = events_bmap;
290 /* Make sure bnxt_ulp_async_events() sees this order */
291 smp_wmb();
292 ulp->max_async_event_id = max_id;
293 bnxt_hwrm_func_drv_rgtr(bp, events_bmap, max_id + 1, true);
294 return 0;
295}
296EXPORT_SYMBOL(bnxt_register_async_events);
297
298void bnxt_rdma_aux_device_uninit(struct bnxt *bp)
299{
300 struct bnxt_aux_priv *aux_priv;
301 struct auxiliary_device *adev;
302
303 /* Skip if no auxiliary device init was done. */
304 if (!bp->aux_priv)
305 return;
306
307 aux_priv = bp->aux_priv;
308 adev = &aux_priv->aux_dev;
309 auxiliary_device_delete(adev);
310 auxiliary_device_uninit(adev);
311}
312
313static void bnxt_aux_dev_release(struct device *dev)
314{
315 struct bnxt_aux_priv *aux_priv =
316 container_of(dev, struct bnxt_aux_priv, aux_dev.dev);
317 struct bnxt *bp = netdev_priv(aux_priv->edev->net);
318
319 ida_free(&bnxt_aux_dev_ids, aux_priv->id);
320 kfree(aux_priv->edev->ulp_tbl);
321 bp->edev = NULL;
322 kfree(aux_priv->edev);
323 kfree(aux_priv);
324 bp->aux_priv = NULL;
325}
326
327static void bnxt_set_edev_info(struct bnxt_en_dev *edev, struct bnxt *bp)
328{
329 edev->net = bp->dev;
330 edev->pdev = bp->pdev;
331 edev->l2_db_size = bp->db_size;
332 edev->l2_db_size_nc = bp->db_size;
333 edev->l2_db_offset = bp->db_offset;
334
335 if (bp->flags & BNXT_FLAG_ROCEV1_CAP)
336 edev->flags |= BNXT_EN_FLAG_ROCEV1_CAP;
337 if (bp->flags & BNXT_FLAG_ROCEV2_CAP)
338 edev->flags |= BNXT_EN_FLAG_ROCEV2_CAP;
339 if (bp->flags & BNXT_FLAG_VF)
340 edev->flags |= BNXT_EN_FLAG_VF;
341
342 edev->chip_num = bp->chip_num;
343 edev->hw_ring_stats_size = bp->hw_ring_stats_size;
344 edev->pf_port_id = bp->pf.port_id;
345 edev->en_state = bp->state;
346 edev->bar0 = bp->bar0;
347 edev->ulp_tbl->msix_requested = bnxt_get_ulp_msix_num(bp);
348}
349
350void bnxt_rdma_aux_device_init(struct bnxt *bp)
351{
352 struct auxiliary_device *aux_dev;
353 struct bnxt_aux_priv *aux_priv;
354 struct bnxt_en_dev *edev;
355 struct bnxt_ulp *ulp;
356 int rc;
357
358 if (!(bp->flags & BNXT_FLAG_ROCE_CAP))
359 return;
360
361 aux_priv = kzalloc(sizeof(*bp->aux_priv), GFP_KERNEL);
362 if (!aux_priv)
363 goto exit;
364
365 aux_priv->id = ida_alloc(&bnxt_aux_dev_ids, GFP_KERNEL);
366 if (aux_priv->id < 0) {
367 netdev_warn(bp->dev,
368 "ida alloc failed for ROCE auxiliary device\n");
369 kfree(aux_priv);
370 goto exit;
371 }
372
373 aux_dev = &aux_priv->aux_dev;
374 aux_dev->id = aux_priv->id;
375 aux_dev->name = "rdma";
376 aux_dev->dev.parent = &bp->pdev->dev;
377 aux_dev->dev.release = bnxt_aux_dev_release;
378
379 rc = auxiliary_device_init(aux_dev);
380 if (rc) {
381 ida_free(&bnxt_aux_dev_ids, aux_priv->id);
382 kfree(aux_priv);
383 goto exit;
384 }
385 bp->aux_priv = aux_priv;
386
387 /* From this point, all cleanup will happen via the .release callback &
388 * any error unwinding will need to include a call to
389 * auxiliary_device_uninit.
390 */
391 edev = kzalloc(sizeof(*edev), GFP_KERNEL);
392 if (!edev)
393 goto aux_dev_uninit;
394
395 ulp = kzalloc(sizeof(*ulp), GFP_KERNEL);
396 if (!ulp)
397 goto aux_dev_uninit;
398
399 edev->ulp_tbl = ulp;
400 aux_priv->edev = edev;
401 bp->edev = edev;
402 bnxt_set_edev_info(edev, bp);
403
404 rc = auxiliary_device_add(aux_dev);
405 if (rc) {
406 netdev_warn(bp->dev,
407 "Failed to add auxiliary device for ROCE\n");
408 goto aux_dev_uninit;
409 }
410
411 return;
412
413aux_dev_uninit:
414 auxiliary_device_uninit(aux_dev);
415exit:
416 bp->flags &= ~BNXT_FLAG_ROCE_CAP;
417}
1/* Broadcom NetXtreme-C/E network driver.
2 *
3 * Copyright (c) 2016-2018 Broadcom Limited
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation.
8 */
9
10#include <linux/module.h>
11
12#include <linux/kernel.h>
13#include <linux/errno.h>
14#include <linux/interrupt.h>
15#include <linux/pci.h>
16#include <linux/netdevice.h>
17#include <linux/rtnetlink.h>
18#include <linux/bitops.h>
19#include <linux/irq.h>
20#include <asm/byteorder.h>
21#include <linux/bitmap.h>
22
23#include "bnxt_hsi.h"
24#include "bnxt.h"
25#include "bnxt_ulp.h"
26
27static int bnxt_register_dev(struct bnxt_en_dev *edev, int ulp_id,
28 struct bnxt_ulp_ops *ulp_ops, void *handle)
29{
30 struct net_device *dev = edev->net;
31 struct bnxt *bp = netdev_priv(dev);
32 struct bnxt_ulp *ulp;
33
34 ASSERT_RTNL();
35 if (ulp_id >= BNXT_MAX_ULP)
36 return -EINVAL;
37
38 ulp = &edev->ulp_tbl[ulp_id];
39 if (rcu_access_pointer(ulp->ulp_ops)) {
40 netdev_err(bp->dev, "ulp id %d already registered\n", ulp_id);
41 return -EBUSY;
42 }
43 if (ulp_id == BNXT_ROCE_ULP) {
44 unsigned int max_stat_ctxs;
45
46 max_stat_ctxs = bnxt_get_max_func_stat_ctxs(bp);
47 if (max_stat_ctxs <= BNXT_MIN_ROCE_STAT_CTXS ||
48 bp->cp_nr_rings == max_stat_ctxs)
49 return -ENOMEM;
50 }
51
52 atomic_set(&ulp->ref_count, 0);
53 ulp->handle = handle;
54 rcu_assign_pointer(ulp->ulp_ops, ulp_ops);
55
56 if (ulp_id == BNXT_ROCE_ULP) {
57 if (test_bit(BNXT_STATE_OPEN, &bp->state))
58 bnxt_hwrm_vnic_cfg(bp, 0);
59 }
60
61 return 0;
62}
63
64static int bnxt_unregister_dev(struct bnxt_en_dev *edev, int ulp_id)
65{
66 struct net_device *dev = edev->net;
67 struct bnxt *bp = netdev_priv(dev);
68 struct bnxt_ulp *ulp;
69 int i = 0;
70
71 ASSERT_RTNL();
72 if (ulp_id >= BNXT_MAX_ULP)
73 return -EINVAL;
74
75 ulp = &edev->ulp_tbl[ulp_id];
76 if (!rcu_access_pointer(ulp->ulp_ops)) {
77 netdev_err(bp->dev, "ulp id %d not registered\n", ulp_id);
78 return -EINVAL;
79 }
80 if (ulp_id == BNXT_ROCE_ULP && ulp->msix_requested)
81 edev->en_ops->bnxt_free_msix(edev, ulp_id);
82
83 if (ulp->max_async_event_id)
84 bnxt_hwrm_func_rgtr_async_events(bp, NULL, 0);
85
86 RCU_INIT_POINTER(ulp->ulp_ops, NULL);
87 synchronize_rcu();
88 ulp->max_async_event_id = 0;
89 ulp->async_events_bmap = NULL;
90 while (atomic_read(&ulp->ref_count) != 0 && i < 10) {
91 msleep(100);
92 i++;
93 }
94 return 0;
95}
96
97static void bnxt_fill_msix_vecs(struct bnxt *bp, struct bnxt_msix_entry *ent)
98{
99 struct bnxt_en_dev *edev = bp->edev;
100 int num_msix, idx, i;
101
102 num_msix = edev->ulp_tbl[BNXT_ROCE_ULP].msix_requested;
103 idx = edev->ulp_tbl[BNXT_ROCE_ULP].msix_base;
104 for (i = 0; i < num_msix; i++) {
105 ent[i].vector = bp->irq_tbl[idx + i].vector;
106 ent[i].ring_idx = idx + i;
107 ent[i].db_offset = (idx + i) * 0x80;
108 }
109}
110
111static int bnxt_req_msix_vecs(struct bnxt_en_dev *edev, int ulp_id,
112 struct bnxt_msix_entry *ent, int num_msix)
113{
114 struct net_device *dev = edev->net;
115 struct bnxt *bp = netdev_priv(dev);
116 int max_idx, max_cp_rings;
117 int avail_msix, idx;
118 int rc = 0;
119
120 ASSERT_RTNL();
121 if (ulp_id != BNXT_ROCE_ULP)
122 return -EINVAL;
123
124 if (!(bp->flags & BNXT_FLAG_USING_MSIX))
125 return -ENODEV;
126
127 if (edev->ulp_tbl[ulp_id].msix_requested)
128 return -EAGAIN;
129
130 max_cp_rings = bnxt_get_max_func_cp_rings(bp);
131 avail_msix = bnxt_get_avail_msix(bp, num_msix);
132 if (!avail_msix)
133 return -ENOMEM;
134 if (avail_msix > num_msix)
135 avail_msix = num_msix;
136
137 if (BNXT_NEW_RM(bp)) {
138 idx = bp->cp_nr_rings;
139 } else {
140 max_idx = min_t(int, bp->total_irqs, max_cp_rings);
141 idx = max_idx - avail_msix;
142 }
143 edev->ulp_tbl[ulp_id].msix_base = idx;
144 edev->ulp_tbl[ulp_id].msix_requested = avail_msix;
145 if (bp->total_irqs < (idx + avail_msix)) {
146 if (netif_running(dev)) {
147 bnxt_close_nic(bp, true, false);
148 rc = bnxt_open_nic(bp, true, false);
149 } else {
150 rc = bnxt_reserve_rings(bp, true);
151 }
152 }
153 if (rc) {
154 edev->ulp_tbl[ulp_id].msix_requested = 0;
155 return -EAGAIN;
156 }
157
158 if (BNXT_NEW_RM(bp)) {
159 struct bnxt_hw_resc *hw_resc = &bp->hw_resc;
160 int resv_msix;
161
162 resv_msix = hw_resc->resv_irqs - bp->cp_nr_rings;
163 avail_msix = min_t(int, resv_msix, avail_msix);
164 edev->ulp_tbl[ulp_id].msix_requested = avail_msix;
165 }
166 bnxt_fill_msix_vecs(bp, ent);
167 edev->flags |= BNXT_EN_FLAG_MSIX_REQUESTED;
168 return avail_msix;
169}
170
171static int bnxt_free_msix_vecs(struct bnxt_en_dev *edev, int ulp_id)
172{
173 struct net_device *dev = edev->net;
174 struct bnxt *bp = netdev_priv(dev);
175
176 ASSERT_RTNL();
177 if (ulp_id != BNXT_ROCE_ULP)
178 return -EINVAL;
179
180 if (!(edev->flags & BNXT_EN_FLAG_MSIX_REQUESTED))
181 return 0;
182
183 edev->ulp_tbl[ulp_id].msix_requested = 0;
184 edev->flags &= ~BNXT_EN_FLAG_MSIX_REQUESTED;
185 if (netif_running(dev)) {
186 bnxt_close_nic(bp, true, false);
187 bnxt_open_nic(bp, true, false);
188 }
189 return 0;
190}
191
192int bnxt_get_ulp_msix_num(struct bnxt *bp)
193{
194 if (bnxt_ulp_registered(bp->edev, BNXT_ROCE_ULP)) {
195 struct bnxt_en_dev *edev = bp->edev;
196
197 return edev->ulp_tbl[BNXT_ROCE_ULP].msix_requested;
198 }
199 return 0;
200}
201
202int bnxt_get_ulp_msix_base(struct bnxt *bp)
203{
204 if (bnxt_ulp_registered(bp->edev, BNXT_ROCE_ULP)) {
205 struct bnxt_en_dev *edev = bp->edev;
206
207 if (edev->ulp_tbl[BNXT_ROCE_ULP].msix_requested)
208 return edev->ulp_tbl[BNXT_ROCE_ULP].msix_base;
209 }
210 return 0;
211}
212
213int bnxt_get_ulp_stat_ctxs(struct bnxt *bp)
214{
215 if (bnxt_ulp_registered(bp->edev, BNXT_ROCE_ULP))
216 return BNXT_MIN_ROCE_STAT_CTXS;
217
218 return 0;
219}
220
221static int bnxt_send_msg(struct bnxt_en_dev *edev, int ulp_id,
222 struct bnxt_fw_msg *fw_msg)
223{
224 struct net_device *dev = edev->net;
225 struct bnxt *bp = netdev_priv(dev);
226 struct input *req;
227 int rc;
228
229 if (ulp_id != BNXT_ROCE_ULP && bp->fw_reset_state)
230 return -EBUSY;
231
232 mutex_lock(&bp->hwrm_cmd_lock);
233 req = fw_msg->msg;
234 req->resp_addr = cpu_to_le64(bp->hwrm_cmd_resp_dma_addr);
235 rc = _hwrm_send_message(bp, fw_msg->msg, fw_msg->msg_len,
236 fw_msg->timeout);
237 if (!rc) {
238 struct output *resp = bp->hwrm_cmd_resp_addr;
239 u32 len = le16_to_cpu(resp->resp_len);
240
241 if (fw_msg->resp_max_len < len)
242 len = fw_msg->resp_max_len;
243
244 memcpy(fw_msg->resp, resp, len);
245 }
246 mutex_unlock(&bp->hwrm_cmd_lock);
247 return rc;
248}
249
250static void bnxt_ulp_get(struct bnxt_ulp *ulp)
251{
252 atomic_inc(&ulp->ref_count);
253}
254
255static void bnxt_ulp_put(struct bnxt_ulp *ulp)
256{
257 atomic_dec(&ulp->ref_count);
258}
259
260void bnxt_ulp_stop(struct bnxt *bp)
261{
262 struct bnxt_en_dev *edev = bp->edev;
263 struct bnxt_ulp_ops *ops;
264 int i;
265
266 if (!edev)
267 return;
268
269 for (i = 0; i < BNXT_MAX_ULP; i++) {
270 struct bnxt_ulp *ulp = &edev->ulp_tbl[i];
271
272 ops = rtnl_dereference(ulp->ulp_ops);
273 if (!ops || !ops->ulp_stop)
274 continue;
275 ops->ulp_stop(ulp->handle);
276 }
277}
278
279void bnxt_ulp_start(struct bnxt *bp)
280{
281 struct bnxt_en_dev *edev = bp->edev;
282 struct bnxt_ulp_ops *ops;
283 int i;
284
285 if (!edev)
286 return;
287
288 for (i = 0; i < BNXT_MAX_ULP; i++) {
289 struct bnxt_ulp *ulp = &edev->ulp_tbl[i];
290
291 ops = rtnl_dereference(ulp->ulp_ops);
292 if (!ops || !ops->ulp_start)
293 continue;
294 ops->ulp_start(ulp->handle);
295 }
296}
297
298void bnxt_ulp_sriov_cfg(struct bnxt *bp, int num_vfs)
299{
300 struct bnxt_en_dev *edev = bp->edev;
301 struct bnxt_ulp_ops *ops;
302 int i;
303
304 if (!edev)
305 return;
306
307 for (i = 0; i < BNXT_MAX_ULP; i++) {
308 struct bnxt_ulp *ulp = &edev->ulp_tbl[i];
309
310 rcu_read_lock();
311 ops = rcu_dereference(ulp->ulp_ops);
312 if (!ops || !ops->ulp_sriov_config) {
313 rcu_read_unlock();
314 continue;
315 }
316 bnxt_ulp_get(ulp);
317 rcu_read_unlock();
318 ops->ulp_sriov_config(ulp->handle, num_vfs);
319 bnxt_ulp_put(ulp);
320 }
321}
322
323void bnxt_ulp_shutdown(struct bnxt *bp)
324{
325 struct bnxt_en_dev *edev = bp->edev;
326 struct bnxt_ulp_ops *ops;
327 int i;
328
329 if (!edev)
330 return;
331
332 for (i = 0; i < BNXT_MAX_ULP; i++) {
333 struct bnxt_ulp *ulp = &edev->ulp_tbl[i];
334
335 ops = rtnl_dereference(ulp->ulp_ops);
336 if (!ops || !ops->ulp_shutdown)
337 continue;
338 ops->ulp_shutdown(ulp->handle);
339 }
340}
341
342void bnxt_ulp_irq_stop(struct bnxt *bp)
343{
344 struct bnxt_en_dev *edev = bp->edev;
345 struct bnxt_ulp_ops *ops;
346
347 if (!edev || !(edev->flags & BNXT_EN_FLAG_MSIX_REQUESTED))
348 return;
349
350 if (bnxt_ulp_registered(bp->edev, BNXT_ROCE_ULP)) {
351 struct bnxt_ulp *ulp = &edev->ulp_tbl[BNXT_ROCE_ULP];
352
353 if (!ulp->msix_requested)
354 return;
355
356 ops = rtnl_dereference(ulp->ulp_ops);
357 if (!ops || !ops->ulp_irq_stop)
358 return;
359 ops->ulp_irq_stop(ulp->handle);
360 }
361}
362
363void bnxt_ulp_irq_restart(struct bnxt *bp, int err)
364{
365 struct bnxt_en_dev *edev = bp->edev;
366 struct bnxt_ulp_ops *ops;
367
368 if (!edev || !(edev->flags & BNXT_EN_FLAG_MSIX_REQUESTED))
369 return;
370
371 if (bnxt_ulp_registered(bp->edev, BNXT_ROCE_ULP)) {
372 struct bnxt_ulp *ulp = &edev->ulp_tbl[BNXT_ROCE_ULP];
373 struct bnxt_msix_entry *ent = NULL;
374
375 if (!ulp->msix_requested)
376 return;
377
378 ops = rtnl_dereference(ulp->ulp_ops);
379 if (!ops || !ops->ulp_irq_restart)
380 return;
381
382 if (!err) {
383 ent = kcalloc(ulp->msix_requested, sizeof(*ent),
384 GFP_KERNEL);
385 if (!ent)
386 return;
387 bnxt_fill_msix_vecs(bp, ent);
388 }
389 ops->ulp_irq_restart(ulp->handle, ent);
390 kfree(ent);
391 }
392}
393
394void bnxt_ulp_async_events(struct bnxt *bp, struct hwrm_async_event_cmpl *cmpl)
395{
396 u16 event_id = le16_to_cpu(cmpl->event_id);
397 struct bnxt_en_dev *edev = bp->edev;
398 struct bnxt_ulp_ops *ops;
399 int i;
400
401 if (!edev)
402 return;
403
404 rcu_read_lock();
405 for (i = 0; i < BNXT_MAX_ULP; i++) {
406 struct bnxt_ulp *ulp = &edev->ulp_tbl[i];
407
408 ops = rcu_dereference(ulp->ulp_ops);
409 if (!ops || !ops->ulp_async_notifier)
410 continue;
411 if (!ulp->async_events_bmap ||
412 event_id > ulp->max_async_event_id)
413 continue;
414
415 /* Read max_async_event_id first before testing the bitmap. */
416 smp_rmb();
417 if (test_bit(event_id, ulp->async_events_bmap))
418 ops->ulp_async_notifier(ulp->handle, cmpl);
419 }
420 rcu_read_unlock();
421}
422
423static int bnxt_register_async_events(struct bnxt_en_dev *edev, int ulp_id,
424 unsigned long *events_bmap, u16 max_id)
425{
426 struct net_device *dev = edev->net;
427 struct bnxt *bp = netdev_priv(dev);
428 struct bnxt_ulp *ulp;
429
430 if (ulp_id >= BNXT_MAX_ULP)
431 return -EINVAL;
432
433 ulp = &edev->ulp_tbl[ulp_id];
434 ulp->async_events_bmap = events_bmap;
435 /* Make sure bnxt_ulp_async_events() sees this order */
436 smp_wmb();
437 ulp->max_async_event_id = max_id;
438 bnxt_hwrm_func_rgtr_async_events(bp, events_bmap, max_id + 1);
439 return 0;
440}
441
442static const struct bnxt_en_ops bnxt_en_ops_tbl = {
443 .bnxt_register_device = bnxt_register_dev,
444 .bnxt_unregister_device = bnxt_unregister_dev,
445 .bnxt_request_msix = bnxt_req_msix_vecs,
446 .bnxt_free_msix = bnxt_free_msix_vecs,
447 .bnxt_send_fw_msg = bnxt_send_msg,
448 .bnxt_register_fw_async_events = bnxt_register_async_events,
449};
450
451struct bnxt_en_dev *bnxt_ulp_probe(struct net_device *dev)
452{
453 struct bnxt *bp = netdev_priv(dev);
454 struct bnxt_en_dev *edev;
455
456 edev = bp->edev;
457 if (!edev) {
458 edev = kzalloc(sizeof(*edev), GFP_KERNEL);
459 if (!edev)
460 return ERR_PTR(-ENOMEM);
461 edev->en_ops = &bnxt_en_ops_tbl;
462 if (bp->flags & BNXT_FLAG_ROCEV1_CAP)
463 edev->flags |= BNXT_EN_FLAG_ROCEV1_CAP;
464 if (bp->flags & BNXT_FLAG_ROCEV2_CAP)
465 edev->flags |= BNXT_EN_FLAG_ROCEV2_CAP;
466 edev->net = dev;
467 edev->pdev = bp->pdev;
468 bp->edev = edev;
469 }
470 return bp->edev;
471}