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14#include "aq_vec.h"
15#include "aq_nic.h"
16#include "aq_ring.h"
17#include "aq_hw.h"
18
19#include <linux/netdevice.h>
20
21struct aq_vec_s {
22 const struct aq_hw_ops *aq_hw_ops;
23 struct aq_hw_s *aq_hw;
24 struct aq_nic_s *aq_nic;
25 unsigned int tx_rings;
26 unsigned int rx_rings;
27 struct aq_ring_param_s aq_ring_param;
28 struct napi_struct napi;
29 struct aq_ring_s ring[AQ_CFG_TCS_MAX][2];
30};
31
32#define AQ_VEC_TX_ID 0
33#define AQ_VEC_RX_ID 1
34
35static int aq_vec_poll(struct napi_struct *napi, int budget)
36{
37 struct aq_vec_s *self = container_of(napi, struct aq_vec_s, napi);
38 unsigned int sw_tail_old = 0U;
39 struct aq_ring_s *ring = NULL;
40 bool was_tx_cleaned = true;
41 unsigned int i = 0U;
42 int work_done = 0;
43 int err = 0;
44
45 if (!self) {
46 err = -EINVAL;
47 } else {
48 for (i = 0U, ring = self->ring[0];
49 self->tx_rings > i; ++i, ring = self->ring[i]) {
50 if (self->aq_hw_ops->hw_ring_tx_head_update) {
51 err = self->aq_hw_ops->hw_ring_tx_head_update(
52 self->aq_hw,
53 &ring[AQ_VEC_TX_ID]);
54 if (err < 0)
55 goto err_exit;
56 }
57
58 if (ring[AQ_VEC_TX_ID].sw_head !=
59 ring[AQ_VEC_TX_ID].hw_head) {
60 was_tx_cleaned = aq_ring_tx_clean(&ring[AQ_VEC_TX_ID]);
61 aq_ring_update_queue_state(&ring[AQ_VEC_TX_ID]);
62 }
63
64 err = self->aq_hw_ops->hw_ring_rx_receive(self->aq_hw,
65 &ring[AQ_VEC_RX_ID]);
66 if (err < 0)
67 goto err_exit;
68
69 if (ring[AQ_VEC_RX_ID].sw_head !=
70 ring[AQ_VEC_RX_ID].hw_head) {
71 err = aq_ring_rx_clean(&ring[AQ_VEC_RX_ID],
72 napi,
73 &work_done,
74 budget - work_done);
75 if (err < 0)
76 goto err_exit;
77
78 sw_tail_old = ring[AQ_VEC_RX_ID].sw_tail;
79
80 err = aq_ring_rx_fill(&ring[AQ_VEC_RX_ID]);
81 if (err < 0)
82 goto err_exit;
83
84 err = self->aq_hw_ops->hw_ring_rx_fill(
85 self->aq_hw,
86 &ring[AQ_VEC_RX_ID], sw_tail_old);
87 if (err < 0)
88 goto err_exit;
89 }
90 }
91
92 if (!was_tx_cleaned)
93 work_done = budget;
94
95 if (work_done < budget) {
96 napi_complete_done(napi, work_done);
97 self->aq_hw_ops->hw_irq_enable(self->aq_hw,
98 1U << self->aq_ring_param.vec_idx);
99 }
100 }
101err_exit:
102 return work_done;
103}
104
105struct aq_vec_s *aq_vec_alloc(struct aq_nic_s *aq_nic, unsigned int idx,
106 struct aq_nic_cfg_s *aq_nic_cfg)
107{
108 struct aq_vec_s *self = NULL;
109 struct aq_ring_s *ring = NULL;
110 unsigned int i = 0U;
111 int err = 0;
112
113 self = kzalloc(sizeof(*self), GFP_KERNEL);
114 if (!self) {
115 err = -ENOMEM;
116 goto err_exit;
117 }
118
119 self->aq_nic = aq_nic;
120 self->aq_ring_param.vec_idx = idx;
121 self->aq_ring_param.cpu =
122 idx + aq_nic_cfg->aq_rss.base_cpu_number;
123
124 cpumask_set_cpu(self->aq_ring_param.cpu,
125 &self->aq_ring_param.affinity_mask);
126
127 self->tx_rings = 0;
128 self->rx_rings = 0;
129
130 netif_napi_add(aq_nic_get_ndev(aq_nic), &self->napi,
131 aq_vec_poll, AQ_CFG_NAPI_WEIGHT);
132
133 for (i = 0; i < aq_nic_cfg->tcs; ++i) {
134 unsigned int idx_ring = AQ_NIC_TCVEC2RING(self->nic,
135 self->tx_rings,
136 self->aq_ring_param.vec_idx);
137
138 ring = aq_ring_tx_alloc(&self->ring[i][AQ_VEC_TX_ID], aq_nic,
139 idx_ring, aq_nic_cfg);
140 if (!ring) {
141 err = -ENOMEM;
142 goto err_exit;
143 }
144
145 ++self->tx_rings;
146
147 aq_nic_set_tx_ring(aq_nic, idx_ring, ring);
148
149 ring = aq_ring_rx_alloc(&self->ring[i][AQ_VEC_RX_ID], aq_nic,
150 idx_ring, aq_nic_cfg);
151 if (!ring) {
152 err = -ENOMEM;
153 goto err_exit;
154 }
155
156 ++self->rx_rings;
157 }
158
159err_exit:
160 if (err < 0) {
161 aq_vec_free(self);
162 self = NULL;
163 }
164 return self;
165}
166
167int aq_vec_init(struct aq_vec_s *self, const struct aq_hw_ops *aq_hw_ops,
168 struct aq_hw_s *aq_hw)
169{
170 struct aq_ring_s *ring = NULL;
171 unsigned int i = 0U;
172 int err = 0;
173
174 self->aq_hw_ops = aq_hw_ops;
175 self->aq_hw = aq_hw;
176
177 for (i = 0U, ring = self->ring[0];
178 self->tx_rings > i; ++i, ring = self->ring[i]) {
179 err = aq_ring_init(&ring[AQ_VEC_TX_ID]);
180 if (err < 0)
181 goto err_exit;
182
183 err = self->aq_hw_ops->hw_ring_tx_init(self->aq_hw,
184 &ring[AQ_VEC_TX_ID],
185 &self->aq_ring_param);
186 if (err < 0)
187 goto err_exit;
188
189 err = aq_ring_init(&ring[AQ_VEC_RX_ID]);
190 if (err < 0)
191 goto err_exit;
192
193 err = self->aq_hw_ops->hw_ring_rx_init(self->aq_hw,
194 &ring[AQ_VEC_RX_ID],
195 &self->aq_ring_param);
196 if (err < 0)
197 goto err_exit;
198
199 err = aq_ring_rx_fill(&ring[AQ_VEC_RX_ID]);
200 if (err < 0)
201 goto err_exit;
202
203 err = self->aq_hw_ops->hw_ring_rx_fill(self->aq_hw,
204 &ring[AQ_VEC_RX_ID], 0U);
205 if (err < 0)
206 goto err_exit;
207 }
208
209err_exit:
210 return err;
211}
212
213int aq_vec_start(struct aq_vec_s *self)
214{
215 struct aq_ring_s *ring = NULL;
216 unsigned int i = 0U;
217 int err = 0;
218
219 for (i = 0U, ring = self->ring[0];
220 self->tx_rings > i; ++i, ring = self->ring[i]) {
221 err = self->aq_hw_ops->hw_ring_tx_start(self->aq_hw,
222 &ring[AQ_VEC_TX_ID]);
223 if (err < 0)
224 goto err_exit;
225
226 err = self->aq_hw_ops->hw_ring_rx_start(self->aq_hw,
227 &ring[AQ_VEC_RX_ID]);
228 if (err < 0)
229 goto err_exit;
230 }
231
232 napi_enable(&self->napi);
233
234err_exit:
235 return err;
236}
237
238void aq_vec_stop(struct aq_vec_s *self)
239{
240 struct aq_ring_s *ring = NULL;
241 unsigned int i = 0U;
242
243 for (i = 0U, ring = self->ring[0];
244 self->tx_rings > i; ++i, ring = self->ring[i]) {
245 self->aq_hw_ops->hw_ring_tx_stop(self->aq_hw,
246 &ring[AQ_VEC_TX_ID]);
247
248 self->aq_hw_ops->hw_ring_rx_stop(self->aq_hw,
249 &ring[AQ_VEC_RX_ID]);
250 }
251
252 napi_disable(&self->napi);
253}
254
255void aq_vec_deinit(struct aq_vec_s *self)
256{
257 struct aq_ring_s *ring = NULL;
258 unsigned int i = 0U;
259
260 if (!self)
261 goto err_exit;
262
263 for (i = 0U, ring = self->ring[0];
264 self->tx_rings > i; ++i, ring = self->ring[i]) {
265 aq_ring_tx_clean(&ring[AQ_VEC_TX_ID]);
266 aq_ring_rx_deinit(&ring[AQ_VEC_RX_ID]);
267 }
268err_exit:;
269}
270
271void aq_vec_free(struct aq_vec_s *self)
272{
273 struct aq_ring_s *ring = NULL;
274 unsigned int i = 0U;
275
276 if (!self)
277 goto err_exit;
278
279 for (i = 0U, ring = self->ring[0];
280 self->tx_rings > i; ++i, ring = self->ring[i]) {
281 aq_ring_free(&ring[AQ_VEC_TX_ID]);
282 aq_ring_free(&ring[AQ_VEC_RX_ID]);
283 }
284
285 netif_napi_del(&self->napi);
286
287 kfree(self);
288
289err_exit:;
290}
291
292irqreturn_t aq_vec_isr(int irq, void *private)
293{
294 struct aq_vec_s *self = private;
295 int err = 0;
296
297 if (!self) {
298 err = -EINVAL;
299 goto err_exit;
300 }
301 napi_schedule(&self->napi);
302
303err_exit:
304 return err >= 0 ? IRQ_HANDLED : IRQ_NONE;
305}
306
307irqreturn_t aq_vec_isr_legacy(int irq, void *private)
308{
309 struct aq_vec_s *self = private;
310 u64 irq_mask = 0U;
311 irqreturn_t err = 0;
312
313 if (!self) {
314 err = -EINVAL;
315 goto err_exit;
316 }
317 err = self->aq_hw_ops->hw_irq_read(self->aq_hw, &irq_mask);
318 if (err < 0)
319 goto err_exit;
320
321 if (irq_mask) {
322 self->aq_hw_ops->hw_irq_disable(self->aq_hw,
323 1U << self->aq_ring_param.vec_idx);
324 napi_schedule(&self->napi);
325 } else {
326 self->aq_hw_ops->hw_irq_enable(self->aq_hw, 1U);
327 err = IRQ_NONE;
328 }
329
330err_exit:
331 return err >= 0 ? IRQ_HANDLED : IRQ_NONE;
332}
333
334cpumask_t *aq_vec_get_affinity_mask(struct aq_vec_s *self)
335{
336 return &self->aq_ring_param.affinity_mask;
337}
338
339void aq_vec_add_stats(struct aq_vec_s *self,
340 struct aq_ring_stats_rx_s *stats_rx,
341 struct aq_ring_stats_tx_s *stats_tx)
342{
343 struct aq_ring_s *ring = NULL;
344 unsigned int r = 0U;
345
346 for (r = 0U, ring = self->ring[0];
347 self->tx_rings > r; ++r, ring = self->ring[r]) {
348 struct aq_ring_stats_tx_s *tx = &ring[AQ_VEC_TX_ID].stats.tx;
349 struct aq_ring_stats_rx_s *rx = &ring[AQ_VEC_RX_ID].stats.rx;
350
351 stats_rx->packets += rx->packets;
352 stats_rx->bytes += rx->bytes;
353 stats_rx->errors += rx->errors;
354 stats_rx->jumbo_packets += rx->jumbo_packets;
355 stats_rx->lro_packets += rx->lro_packets;
356
357 stats_tx->packets += tx->packets;
358 stats_tx->bytes += tx->bytes;
359 stats_tx->errors += tx->errors;
360 stats_tx->queue_restarts += tx->queue_restarts;
361 }
362}
363
364int aq_vec_get_sw_stats(struct aq_vec_s *self, u64 *data, unsigned int *p_count)
365{
366 unsigned int count = 0U;
367 struct aq_ring_stats_rx_s stats_rx;
368 struct aq_ring_stats_tx_s stats_tx;
369
370 memset(&stats_rx, 0U, sizeof(struct aq_ring_stats_rx_s));
371 memset(&stats_tx, 0U, sizeof(struct aq_ring_stats_tx_s));
372 aq_vec_add_stats(self, &stats_rx, &stats_tx);
373
374
375
376 data[count] += stats_rx.packets;
377 data[++count] += stats_tx.packets;
378 data[++count] += stats_tx.queue_restarts;
379 data[++count] += stats_rx.jumbo_packets;
380 data[++count] += stats_rx.lro_packets;
381 data[++count] += stats_rx.errors;
382
383 if (p_count)
384 *p_count = ++count;
385
386 return 0;
387}
388
