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6
7
8#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
9
10#include <linux/init.h>
11#include <linux/interrupt.h>
12#include <linux/module.h>
13#include <linux/kernel.h>
14#include <linux/netdevice.h>
15#include <linux/dsa/brcm.h>
16#include <linux/etherdevice.h>
17#include <linux/platform_device.h>
18#include <linux/of.h>
19#include <linux/of_net.h>
20#include <linux/of_mdio.h>
21#include <linux/phy.h>
22#include <linux/phy_fixed.h>
23#include <net/dsa.h>
24#include <linux/clk.h>
25#include <net/ip.h>
26#include <net/ipv6.h>
27
28#include "bcmsysport.h"
29
30
31#define BCM_SYSPORT_IO_MACRO(name, offset) \
32static inline u32 name##_readl(struct bcm_sysport_priv *priv, u32 off) \
33{ \
34 u32 reg = readl_relaxed(priv->base + offset + off); \
35 return reg; \
36} \
37static inline void name##_writel(struct bcm_sysport_priv *priv, \
38 u32 val, u32 off) \
39{ \
40 writel_relaxed(val, priv->base + offset + off); \
41} \
42
43BCM_SYSPORT_IO_MACRO(intrl2_0, SYS_PORT_INTRL2_0_OFFSET);
44BCM_SYSPORT_IO_MACRO(intrl2_1, SYS_PORT_INTRL2_1_OFFSET);
45BCM_SYSPORT_IO_MACRO(umac, SYS_PORT_UMAC_OFFSET);
46BCM_SYSPORT_IO_MACRO(gib, SYS_PORT_GIB_OFFSET);
47BCM_SYSPORT_IO_MACRO(tdma, SYS_PORT_TDMA_OFFSET);
48BCM_SYSPORT_IO_MACRO(rxchk, SYS_PORT_RXCHK_OFFSET);
49BCM_SYSPORT_IO_MACRO(txchk, SYS_PORT_TXCHK_OFFSET);
50BCM_SYSPORT_IO_MACRO(rbuf, SYS_PORT_RBUF_OFFSET);
51BCM_SYSPORT_IO_MACRO(tbuf, SYS_PORT_TBUF_OFFSET);
52BCM_SYSPORT_IO_MACRO(topctrl, SYS_PORT_TOPCTRL_OFFSET);
53
54
55
56
57static inline u32 rdma_readl(struct bcm_sysport_priv *priv, u32 off)
58{
59 if (priv->is_lite && off >= RDMA_STATUS)
60 off += 4;
61 return readl_relaxed(priv->base + SYS_PORT_RDMA_OFFSET + off);
62}
63
64static inline void rdma_writel(struct bcm_sysport_priv *priv, u32 val, u32 off)
65{
66 if (priv->is_lite && off >= RDMA_STATUS)
67 off += 4;
68 writel_relaxed(val, priv->base + SYS_PORT_RDMA_OFFSET + off);
69}
70
71static inline u32 tdma_control_bit(struct bcm_sysport_priv *priv, u32 bit)
72{
73 if (!priv->is_lite) {
74 return BIT(bit);
75 } else {
76 if (bit >= ACB_ALGO)
77 return BIT(bit + 1);
78 else
79 return BIT(bit);
80 }
81}
82
83
84
85
86#define BCM_SYSPORT_INTR_L2(which) \
87static inline void intrl2_##which##_mask_clear(struct bcm_sysport_priv *priv, \
88 u32 mask) \
89{ \
90 priv->irq##which##_mask &= ~(mask); \
91 intrl2_##which##_writel(priv, mask, INTRL2_CPU_MASK_CLEAR); \
92} \
93static inline void intrl2_##which##_mask_set(struct bcm_sysport_priv *priv, \
94 u32 mask) \
95{ \
96 intrl2_## which##_writel(priv, mask, INTRL2_CPU_MASK_SET); \
97 priv->irq##which##_mask |= (mask); \
98} \
99
100BCM_SYSPORT_INTR_L2(0)
101BCM_SYSPORT_INTR_L2(1)
102
103
104
105
106
107static inline void dma_desc_set_addr(struct bcm_sysport_priv *priv,
108 void __iomem *d,
109 dma_addr_t addr)
110{
111#ifdef CONFIG_PHYS_ADDR_T_64BIT
112 writel_relaxed(upper_32_bits(addr) & DESC_ADDR_HI_MASK,
113 d + DESC_ADDR_HI_STATUS_LEN);
114#endif
115 writel_relaxed(lower_32_bits(addr), d + DESC_ADDR_LO);
116}
117
118
119static void bcm_sysport_set_rx_csum(struct net_device *dev,
120 netdev_features_t wanted)
121{
122 struct bcm_sysport_priv *priv = netdev_priv(dev);
123 u32 reg;
124
125 priv->rx_chk_en = !!(wanted & NETIF_F_RXCSUM);
126 reg = rxchk_readl(priv, RXCHK_CONTROL);
127
128
129
130 reg &= ~RXCHK_L2_HDR_DIS;
131 if (priv->rx_chk_en)
132 reg |= RXCHK_EN;
133 else
134 reg &= ~RXCHK_EN;
135
136
137
138
139 if (priv->rx_chk_en && priv->crc_fwd)
140 reg |= RXCHK_SKIP_FCS;
141 else
142 reg &= ~RXCHK_SKIP_FCS;
143
144
145
146
147
148 if (netdev_uses_dsa(dev))
149 reg |= RXCHK_BRCM_TAG_EN;
150 else
151 reg &= ~RXCHK_BRCM_TAG_EN;
152
153 rxchk_writel(priv, reg, RXCHK_CONTROL);
154}
155
156static void bcm_sysport_set_tx_csum(struct net_device *dev,
157 netdev_features_t wanted)
158{
159 struct bcm_sysport_priv *priv = netdev_priv(dev);
160 u32 reg;
161
162
163
164
165 priv->tsb_en = !!(wanted & (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
166 NETIF_F_HW_VLAN_CTAG_TX));
167 reg = tdma_readl(priv, TDMA_CONTROL);
168 if (priv->tsb_en)
169 reg |= tdma_control_bit(priv, TSB_EN);
170 else
171 reg &= ~tdma_control_bit(priv, TSB_EN);
172
173
174
175
176 if (netdev_uses_dsa(dev))
177 reg |= tdma_control_bit(priv, SW_BRCM_TAG);
178 else
179 reg &= ~tdma_control_bit(priv, SW_BRCM_TAG);
180 tdma_writel(priv, reg, TDMA_CONTROL);
181
182
183 if (wanted & NETIF_F_HW_VLAN_CTAG_TX)
184 tdma_writel(priv, ETH_P_8021Q, TDMA_TPID);
185}
186
187static int bcm_sysport_set_features(struct net_device *dev,
188 netdev_features_t features)
189{
190 struct bcm_sysport_priv *priv = netdev_priv(dev);
191 int ret;
192
193 ret = clk_prepare_enable(priv->clk);
194 if (ret)
195 return ret;
196
197
198 if (!priv->is_lite)
199 priv->crc_fwd = !!(umac_readl(priv, UMAC_CMD) & CMD_CRC_FWD);
200 else
201 priv->crc_fwd = !((gib_readl(priv, GIB_CONTROL) &
202 GIB_FCS_STRIP) >> GIB_FCS_STRIP_SHIFT);
203
204 bcm_sysport_set_rx_csum(dev, features);
205 bcm_sysport_set_tx_csum(dev, features);
206
207 clk_disable_unprepare(priv->clk);
208
209 return 0;
210}
211
212
213
214
215static const struct bcm_sysport_stats bcm_sysport_gstrings_stats[] = {
216
217 STAT_NETDEV64(rx_packets),
218 STAT_NETDEV64(tx_packets),
219 STAT_NETDEV64(rx_bytes),
220 STAT_NETDEV64(tx_bytes),
221 STAT_NETDEV(rx_errors),
222 STAT_NETDEV(tx_errors),
223 STAT_NETDEV(rx_dropped),
224 STAT_NETDEV(tx_dropped),
225 STAT_NETDEV(multicast),
226
227 STAT_MIB_RX("rx_64_octets", mib.rx.pkt_cnt.cnt_64),
228 STAT_MIB_RX("rx_65_127_oct", mib.rx.pkt_cnt.cnt_127),
229 STAT_MIB_RX("rx_128_255_oct", mib.rx.pkt_cnt.cnt_255),
230 STAT_MIB_RX("rx_256_511_oct", mib.rx.pkt_cnt.cnt_511),
231 STAT_MIB_RX("rx_512_1023_oct", mib.rx.pkt_cnt.cnt_1023),
232 STAT_MIB_RX("rx_1024_1518_oct", mib.rx.pkt_cnt.cnt_1518),
233 STAT_MIB_RX("rx_vlan_1519_1522_oct", mib.rx.pkt_cnt.cnt_mgv),
234 STAT_MIB_RX("rx_1522_2047_oct", mib.rx.pkt_cnt.cnt_2047),
235 STAT_MIB_RX("rx_2048_4095_oct", mib.rx.pkt_cnt.cnt_4095),
236 STAT_MIB_RX("rx_4096_9216_oct", mib.rx.pkt_cnt.cnt_9216),
237 STAT_MIB_RX("rx_pkts", mib.rx.pkt),
238 STAT_MIB_RX("rx_bytes", mib.rx.bytes),
239 STAT_MIB_RX("rx_multicast", mib.rx.mca),
240 STAT_MIB_RX("rx_broadcast", mib.rx.bca),
241 STAT_MIB_RX("rx_fcs", mib.rx.fcs),
242 STAT_MIB_RX("rx_control", mib.rx.cf),
243 STAT_MIB_RX("rx_pause", mib.rx.pf),
244 STAT_MIB_RX("rx_unknown", mib.rx.uo),
245 STAT_MIB_RX("rx_align", mib.rx.aln),
246 STAT_MIB_RX("rx_outrange", mib.rx.flr),
247 STAT_MIB_RX("rx_code", mib.rx.cde),
248 STAT_MIB_RX("rx_carrier", mib.rx.fcr),
249 STAT_MIB_RX("rx_oversize", mib.rx.ovr),
250 STAT_MIB_RX("rx_jabber", mib.rx.jbr),
251 STAT_MIB_RX("rx_mtu_err", mib.rx.mtue),
252 STAT_MIB_RX("rx_good_pkts", mib.rx.pok),
253 STAT_MIB_RX("rx_unicast", mib.rx.uc),
254 STAT_MIB_RX("rx_ppp", mib.rx.ppp),
255 STAT_MIB_RX("rx_crc", mib.rx.rcrc),
256
257 STAT_MIB_TX("tx_64_octets", mib.tx.pkt_cnt.cnt_64),
258 STAT_MIB_TX("tx_65_127_oct", mib.tx.pkt_cnt.cnt_127),
259 STAT_MIB_TX("tx_128_255_oct", mib.tx.pkt_cnt.cnt_255),
260 STAT_MIB_TX("tx_256_511_oct", mib.tx.pkt_cnt.cnt_511),
261 STAT_MIB_TX("tx_512_1023_oct", mib.tx.pkt_cnt.cnt_1023),
262 STAT_MIB_TX("tx_1024_1518_oct", mib.tx.pkt_cnt.cnt_1518),
263 STAT_MIB_TX("tx_vlan_1519_1522_oct", mib.tx.pkt_cnt.cnt_mgv),
264 STAT_MIB_TX("tx_1522_2047_oct", mib.tx.pkt_cnt.cnt_2047),
265 STAT_MIB_TX("tx_2048_4095_oct", mib.tx.pkt_cnt.cnt_4095),
266 STAT_MIB_TX("tx_4096_9216_oct", mib.tx.pkt_cnt.cnt_9216),
267 STAT_MIB_TX("tx_pkts", mib.tx.pkts),
268 STAT_MIB_TX("tx_multicast", mib.tx.mca),
269 STAT_MIB_TX("tx_broadcast", mib.tx.bca),
270 STAT_MIB_TX("tx_pause", mib.tx.pf),
271 STAT_MIB_TX("tx_control", mib.tx.cf),
272 STAT_MIB_TX("tx_fcs_err", mib.tx.fcs),
273 STAT_MIB_TX("tx_oversize", mib.tx.ovr),
274 STAT_MIB_TX("tx_defer", mib.tx.drf),
275 STAT_MIB_TX("tx_excess_defer", mib.tx.edf),
276 STAT_MIB_TX("tx_single_col", mib.tx.scl),
277 STAT_MIB_TX("tx_multi_col", mib.tx.mcl),
278 STAT_MIB_TX("tx_late_col", mib.tx.lcl),
279 STAT_MIB_TX("tx_excess_col", mib.tx.ecl),
280 STAT_MIB_TX("tx_frags", mib.tx.frg),
281 STAT_MIB_TX("tx_total_col", mib.tx.ncl),
282 STAT_MIB_TX("tx_jabber", mib.tx.jbr),
283 STAT_MIB_TX("tx_bytes", mib.tx.bytes),
284 STAT_MIB_TX("tx_good_pkts", mib.tx.pok),
285 STAT_MIB_TX("tx_unicast", mib.tx.uc),
286
287 STAT_RUNT("rx_runt_pkts", mib.rx_runt_cnt),
288 STAT_RUNT("rx_runt_valid_fcs", mib.rx_runt_fcs),
289 STAT_RUNT("rx_runt_inval_fcs_align", mib.rx_runt_fcs_align),
290 STAT_RUNT("rx_runt_bytes", mib.rx_runt_bytes),
291
292 STAT_RXCHK("rxchk_bad_csum", mib.rxchk_bad_csum, RXCHK_BAD_CSUM_CNTR),
293 STAT_RXCHK("rxchk_other_pkt_disc", mib.rxchk_other_pkt_disc,
294 RXCHK_OTHER_DISC_CNTR),
295
296 STAT_RBUF("rbuf_ovflow_cnt", mib.rbuf_ovflow_cnt, RBUF_OVFL_DISC_CNTR),
297 STAT_RBUF("rbuf_err_cnt", mib.rbuf_err_cnt, RBUF_ERR_PKT_CNTR),
298 STAT_MIB_SOFT("alloc_rx_buff_failed", mib.alloc_rx_buff_failed),
299 STAT_MIB_SOFT("rx_dma_failed", mib.rx_dma_failed),
300 STAT_MIB_SOFT("tx_dma_failed", mib.tx_dma_failed),
301 STAT_MIB_SOFT("tx_realloc_tsb", mib.tx_realloc_tsb),
302 STAT_MIB_SOFT("tx_realloc_tsb_failed", mib.tx_realloc_tsb_failed),
303
304};
305
306#define BCM_SYSPORT_STATS_LEN ARRAY_SIZE(bcm_sysport_gstrings_stats)
307
308static void bcm_sysport_get_drvinfo(struct net_device *dev,
309 struct ethtool_drvinfo *info)
310{
311 strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
312 strlcpy(info->bus_info, "platform", sizeof(info->bus_info));
313}
314
315static u32 bcm_sysport_get_msglvl(struct net_device *dev)
316{
317 struct bcm_sysport_priv *priv = netdev_priv(dev);
318
319 return priv->msg_enable;
320}
321
322static void bcm_sysport_set_msglvl(struct net_device *dev, u32 enable)
323{
324 struct bcm_sysport_priv *priv = netdev_priv(dev);
325
326 priv->msg_enable = enable;
327}
328
329static inline bool bcm_sysport_lite_stat_valid(enum bcm_sysport_stat_type type)
330{
331 switch (type) {
332 case BCM_SYSPORT_STAT_NETDEV:
333 case BCM_SYSPORT_STAT_NETDEV64:
334 case BCM_SYSPORT_STAT_RXCHK:
335 case BCM_SYSPORT_STAT_RBUF:
336 case BCM_SYSPORT_STAT_SOFT:
337 return true;
338 default:
339 return false;
340 }
341}
342
343static int bcm_sysport_get_sset_count(struct net_device *dev, int string_set)
344{
345 struct bcm_sysport_priv *priv = netdev_priv(dev);
346 const struct bcm_sysport_stats *s;
347 unsigned int i, j;
348
349 switch (string_set) {
350 case ETH_SS_STATS:
351 for (i = 0, j = 0; i < BCM_SYSPORT_STATS_LEN; i++) {
352 s = &bcm_sysport_gstrings_stats[i];
353 if (priv->is_lite &&
354 !bcm_sysport_lite_stat_valid(s->type))
355 continue;
356 j++;
357 }
358
359 return j + dev->num_tx_queues * NUM_SYSPORT_TXQ_STAT;
360 default:
361 return -EOPNOTSUPP;
362 }
363}
364
365static void bcm_sysport_get_strings(struct net_device *dev,
366 u32 stringset, u8 *data)
367{
368 struct bcm_sysport_priv *priv = netdev_priv(dev);
369 const struct bcm_sysport_stats *s;
370 char buf[128];
371 int i, j;
372
373 switch (stringset) {
374 case ETH_SS_STATS:
375 for (i = 0, j = 0; i < BCM_SYSPORT_STATS_LEN; i++) {
376 s = &bcm_sysport_gstrings_stats[i];
377 if (priv->is_lite &&
378 !bcm_sysport_lite_stat_valid(s->type))
379 continue;
380
381 memcpy(data + j * ETH_GSTRING_LEN, s->stat_string,
382 ETH_GSTRING_LEN);
383 j++;
384 }
385
386 for (i = 0; i < dev->num_tx_queues; i++) {
387 snprintf(buf, sizeof(buf), "txq%d_packets", i);
388 memcpy(data + j * ETH_GSTRING_LEN, buf,
389 ETH_GSTRING_LEN);
390 j++;
391
392 snprintf(buf, sizeof(buf), "txq%d_bytes", i);
393 memcpy(data + j * ETH_GSTRING_LEN, buf,
394 ETH_GSTRING_LEN);
395 j++;
396 }
397 break;
398 default:
399 break;
400 }
401}
402
403static void bcm_sysport_update_mib_counters(struct bcm_sysport_priv *priv)
404{
405 int i, j = 0;
406
407 for (i = 0; i < BCM_SYSPORT_STATS_LEN; i++) {
408 const struct bcm_sysport_stats *s;
409 u8 offset = 0;
410 u32 val = 0;
411 char *p;
412
413 s = &bcm_sysport_gstrings_stats[i];
414 switch (s->type) {
415 case BCM_SYSPORT_STAT_NETDEV:
416 case BCM_SYSPORT_STAT_NETDEV64:
417 case BCM_SYSPORT_STAT_SOFT:
418 continue;
419 case BCM_SYSPORT_STAT_MIB_RX:
420 case BCM_SYSPORT_STAT_MIB_TX:
421 case BCM_SYSPORT_STAT_RUNT:
422 if (priv->is_lite)
423 continue;
424
425 if (s->type != BCM_SYSPORT_STAT_MIB_RX)
426 offset = UMAC_MIB_STAT_OFFSET;
427 val = umac_readl(priv, UMAC_MIB_START + j + offset);
428 break;
429 case BCM_SYSPORT_STAT_RXCHK:
430 val = rxchk_readl(priv, s->reg_offset);
431 if (val == ~0)
432 rxchk_writel(priv, 0, s->reg_offset);
433 break;
434 case BCM_SYSPORT_STAT_RBUF:
435 val = rbuf_readl(priv, s->reg_offset);
436 if (val == ~0)
437 rbuf_writel(priv, 0, s->reg_offset);
438 break;
439 }
440
441 j += s->stat_sizeof;
442 p = (char *)priv + s->stat_offset;
443 *(u32 *)p = val;
444 }
445
446 netif_dbg(priv, hw, priv->netdev, "updated MIB counters\n");
447}
448
449static void bcm_sysport_update_tx_stats(struct bcm_sysport_priv *priv,
450 u64 *tx_bytes, u64 *tx_packets)
451{
452 struct bcm_sysport_tx_ring *ring;
453 u64 bytes = 0, packets = 0;
454 unsigned int start;
455 unsigned int q;
456
457 for (q = 0; q < priv->netdev->num_tx_queues; q++) {
458 ring = &priv->tx_rings[q];
459 do {
460 start = u64_stats_fetch_begin_irq(&priv->syncp);
461 bytes = ring->bytes;
462 packets = ring->packets;
463 } while (u64_stats_fetch_retry_irq(&priv->syncp, start));
464
465 *tx_bytes += bytes;
466 *tx_packets += packets;
467 }
468}
469
470static void bcm_sysport_get_stats(struct net_device *dev,
471 struct ethtool_stats *stats, u64 *data)
472{
473 struct bcm_sysport_priv *priv = netdev_priv(dev);
474 struct bcm_sysport_stats64 *stats64 = &priv->stats64;
475 struct u64_stats_sync *syncp = &priv->syncp;
476 struct bcm_sysport_tx_ring *ring;
477 u64 tx_bytes = 0, tx_packets = 0;
478 unsigned int start;
479 int i, j;
480
481 if (netif_running(dev)) {
482 bcm_sysport_update_mib_counters(priv);
483 bcm_sysport_update_tx_stats(priv, &tx_bytes, &tx_packets);
484 stats64->tx_bytes = tx_bytes;
485 stats64->tx_packets = tx_packets;
486 }
487
488 for (i = 0, j = 0; i < BCM_SYSPORT_STATS_LEN; i++) {
489 const struct bcm_sysport_stats *s;
490 char *p;
491
492 s = &bcm_sysport_gstrings_stats[i];
493 if (s->type == BCM_SYSPORT_STAT_NETDEV)
494 p = (char *)&dev->stats;
495 else if (s->type == BCM_SYSPORT_STAT_NETDEV64)
496 p = (char *)stats64;
497 else
498 p = (char *)priv;
499
500 if (priv->is_lite && !bcm_sysport_lite_stat_valid(s->type))
501 continue;
502 p += s->stat_offset;
503
504 if (s->stat_sizeof == sizeof(u64) &&
505 s->type == BCM_SYSPORT_STAT_NETDEV64) {
506 do {
507 start = u64_stats_fetch_begin_irq(syncp);
508 data[i] = *(u64 *)p;
509 } while (u64_stats_fetch_retry_irq(syncp, start));
510 } else
511 data[i] = *(u32 *)p;
512 j++;
513 }
514
515
516
517
518
519
520 j = bcm_sysport_get_sset_count(dev, ETH_SS_STATS) -
521 dev->num_tx_queues * NUM_SYSPORT_TXQ_STAT;
522
523 for (i = 0; i < dev->num_tx_queues; i++) {
524 ring = &priv->tx_rings[i];
525 data[j] = ring->packets;
526 j++;
527 data[j] = ring->bytes;
528 j++;
529 }
530}
531
532static void bcm_sysport_get_wol(struct net_device *dev,
533 struct ethtool_wolinfo *wol)
534{
535 struct bcm_sysport_priv *priv = netdev_priv(dev);
536
537 wol->supported = WAKE_MAGIC | WAKE_MAGICSECURE | WAKE_FILTER;
538 wol->wolopts = priv->wolopts;
539
540 if (!(priv->wolopts & WAKE_MAGICSECURE))
541 return;
542
543 memcpy(wol->sopass, priv->sopass, sizeof(priv->sopass));
544}
545
546static int bcm_sysport_set_wol(struct net_device *dev,
547 struct ethtool_wolinfo *wol)
548{
549 struct bcm_sysport_priv *priv = netdev_priv(dev);
550 struct device *kdev = &priv->pdev->dev;
551 u32 supported = WAKE_MAGIC | WAKE_MAGICSECURE | WAKE_FILTER;
552
553 if (!device_can_wakeup(kdev))
554 return -ENOTSUPP;
555
556 if (wol->wolopts & ~supported)
557 return -EINVAL;
558
559 if (wol->wolopts & WAKE_MAGICSECURE)
560 memcpy(priv->sopass, wol->sopass, sizeof(priv->sopass));
561
562
563 if (wol->wolopts) {
564 device_set_wakeup_enable(kdev, 1);
565 if (priv->wol_irq_disabled)
566 enable_irq_wake(priv->wol_irq);
567 priv->wol_irq_disabled = 0;
568 } else {
569 device_set_wakeup_enable(kdev, 0);
570
571 if (!priv->wol_irq_disabled)
572 disable_irq_wake(priv->wol_irq);
573 priv->wol_irq_disabled = 1;
574 }
575
576 priv->wolopts = wol->wolopts;
577
578 return 0;
579}
580
581static void bcm_sysport_set_rx_coalesce(struct bcm_sysport_priv *priv,
582 u32 usecs, u32 pkts)
583{
584 u32 reg;
585
586 reg = rdma_readl(priv, RDMA_MBDONE_INTR);
587 reg &= ~(RDMA_INTR_THRESH_MASK |
588 RDMA_TIMEOUT_MASK << RDMA_TIMEOUT_SHIFT);
589 reg |= pkts;
590 reg |= DIV_ROUND_UP(usecs * 1000, 8192) << RDMA_TIMEOUT_SHIFT;
591 rdma_writel(priv, reg, RDMA_MBDONE_INTR);
592}
593
594static void bcm_sysport_set_tx_coalesce(struct bcm_sysport_tx_ring *ring,
595 struct ethtool_coalesce *ec)
596{
597 struct bcm_sysport_priv *priv = ring->priv;
598 u32 reg;
599
600 reg = tdma_readl(priv, TDMA_DESC_RING_INTR_CONTROL(ring->index));
601 reg &= ~(RING_INTR_THRESH_MASK |
602 RING_TIMEOUT_MASK << RING_TIMEOUT_SHIFT);
603 reg |= ec->tx_max_coalesced_frames;
604 reg |= DIV_ROUND_UP(ec->tx_coalesce_usecs * 1000, 8192) <<
605 RING_TIMEOUT_SHIFT;
606 tdma_writel(priv, reg, TDMA_DESC_RING_INTR_CONTROL(ring->index));
607}
608
609static int bcm_sysport_get_coalesce(struct net_device *dev,
610 struct ethtool_coalesce *ec,
611 struct kernel_ethtool_coalesce *kernel_coal,
612 struct netlink_ext_ack *extack)
613{
614 struct bcm_sysport_priv *priv = netdev_priv(dev);
615 u32 reg;
616
617 reg = tdma_readl(priv, TDMA_DESC_RING_INTR_CONTROL(0));
618
619 ec->tx_coalesce_usecs = (reg >> RING_TIMEOUT_SHIFT) * 8192 / 1000;
620 ec->tx_max_coalesced_frames = reg & RING_INTR_THRESH_MASK;
621
622 reg = rdma_readl(priv, RDMA_MBDONE_INTR);
623
624 ec->rx_coalesce_usecs = (reg >> RDMA_TIMEOUT_SHIFT) * 8192 / 1000;
625 ec->rx_max_coalesced_frames = reg & RDMA_INTR_THRESH_MASK;
626 ec->use_adaptive_rx_coalesce = priv->dim.use_dim;
627
628 return 0;
629}
630
631static int bcm_sysport_set_coalesce(struct net_device *dev,
632 struct ethtool_coalesce *ec,
633 struct kernel_ethtool_coalesce *kernel_coal,
634 struct netlink_ext_ack *extack)
635{
636 struct bcm_sysport_priv *priv = netdev_priv(dev);
637 struct dim_cq_moder moder;
638 u32 usecs, pkts;
639 unsigned int i;
640
641
642
643
644
645 if (ec->tx_max_coalesced_frames > RING_INTR_THRESH_MASK ||
646 ec->tx_coalesce_usecs > (RING_TIMEOUT_MASK * 8) + 1 ||
647 ec->rx_max_coalesced_frames > RDMA_INTR_THRESH_MASK ||
648 ec->rx_coalesce_usecs > (RDMA_TIMEOUT_MASK * 8) + 1)
649 return -EINVAL;
650
651 if ((ec->tx_coalesce_usecs == 0 && ec->tx_max_coalesced_frames == 0) ||
652 (ec->rx_coalesce_usecs == 0 && ec->rx_max_coalesced_frames == 0))
653 return -EINVAL;
654
655 for (i = 0; i < dev->num_tx_queues; i++)
656 bcm_sysport_set_tx_coalesce(&priv->tx_rings[i], ec);
657
658 priv->rx_coalesce_usecs = ec->rx_coalesce_usecs;
659 priv->rx_max_coalesced_frames = ec->rx_max_coalesced_frames;
660 usecs = priv->rx_coalesce_usecs;
661 pkts = priv->rx_max_coalesced_frames;
662
663 if (ec->use_adaptive_rx_coalesce && !priv->dim.use_dim) {
664 moder = net_dim_get_def_rx_moderation(priv->dim.dim.mode);
665 usecs = moder.usec;
666 pkts = moder.pkts;
667 }
668
669 priv->dim.use_dim = ec->use_adaptive_rx_coalesce;
670
671
672 bcm_sysport_set_rx_coalesce(priv, usecs, pkts);
673
674 return 0;
675}
676
677static void bcm_sysport_free_cb(struct bcm_sysport_cb *cb)
678{
679 dev_consume_skb_any(cb->skb);
680 cb->skb = NULL;
681 dma_unmap_addr_set(cb, dma_addr, 0);
682}
683
684static struct sk_buff *bcm_sysport_rx_refill(struct bcm_sysport_priv *priv,
685 struct bcm_sysport_cb *cb)
686{
687 struct device *kdev = &priv->pdev->dev;
688 struct net_device *ndev = priv->netdev;
689 struct sk_buff *skb, *rx_skb;
690 dma_addr_t mapping;
691
692
693 skb = __netdev_alloc_skb(priv->netdev, RX_BUF_LENGTH,
694 GFP_ATOMIC | __GFP_NOWARN);
695 if (!skb) {
696 priv->mib.alloc_rx_buff_failed++;
697 netif_err(priv, rx_err, ndev, "SKB alloc failed\n");
698 return NULL;
699 }
700
701 mapping = dma_map_single(kdev, skb->data,
702 RX_BUF_LENGTH, DMA_FROM_DEVICE);
703 if (dma_mapping_error(kdev, mapping)) {
704 priv->mib.rx_dma_failed++;
705 dev_kfree_skb_any(skb);
706 netif_err(priv, rx_err, ndev, "DMA mapping failure\n");
707 return NULL;
708 }
709
710
711 rx_skb = cb->skb;
712 if (likely(rx_skb))
713 dma_unmap_single(kdev, dma_unmap_addr(cb, dma_addr),
714 RX_BUF_LENGTH, DMA_FROM_DEVICE);
715
716
717 cb->skb = skb;
718 dma_unmap_addr_set(cb, dma_addr, mapping);
719 dma_desc_set_addr(priv, cb->bd_addr, mapping);
720
721 netif_dbg(priv, rx_status, ndev, "RX refill\n");
722
723
724 return rx_skb;
725}
726
727static int bcm_sysport_alloc_rx_bufs(struct bcm_sysport_priv *priv)
728{
729 struct bcm_sysport_cb *cb;
730 struct sk_buff *skb;
731 unsigned int i;
732
733 for (i = 0; i < priv->num_rx_bds; i++) {
734 cb = &priv->rx_cbs[i];
735 skb = bcm_sysport_rx_refill(priv, cb);
736 dev_kfree_skb(skb);
737 if (!cb->skb)
738 return -ENOMEM;
739 }
740
741 return 0;
742}
743
744
745static unsigned int bcm_sysport_desc_rx(struct bcm_sysport_priv *priv,
746 unsigned int budget)
747{
748 struct bcm_sysport_stats64 *stats64 = &priv->stats64;
749 struct net_device *ndev = priv->netdev;
750 unsigned int processed = 0, to_process;
751 unsigned int processed_bytes = 0;
752 struct bcm_sysport_cb *cb;
753 struct sk_buff *skb;
754 unsigned int p_index;
755 u16 len, status;
756 struct bcm_rsb *rsb;
757
758
759 intrl2_0_writel(priv, INTRL2_0_RDMA_MBDONE, INTRL2_CPU_CLEAR);
760
761
762
763
764
765 if (!priv->is_lite)
766 p_index = rdma_readl(priv, RDMA_PROD_INDEX);
767 else
768 p_index = rdma_readl(priv, RDMA_CONS_INDEX);
769 p_index &= RDMA_PROD_INDEX_MASK;
770
771 to_process = (p_index - priv->rx_c_index) & RDMA_CONS_INDEX_MASK;
772
773 netif_dbg(priv, rx_status, ndev,
774 "p_index=%d rx_c_index=%d to_process=%d\n",
775 p_index, priv->rx_c_index, to_process);
776
777 while ((processed < to_process) && (processed < budget)) {
778 cb = &priv->rx_cbs[priv->rx_read_ptr];
779 skb = bcm_sysport_rx_refill(priv, cb);
780
781
782
783
784
785
786
787 if (unlikely(!skb)) {
788 netif_err(priv, rx_err, ndev, "out of memory!\n");
789 ndev->stats.rx_dropped++;
790 ndev->stats.rx_errors++;
791 goto next;
792 }
793
794
795 rsb = (struct bcm_rsb *)skb->data;
796 len = (rsb->rx_status_len >> DESC_LEN_SHIFT) & DESC_LEN_MASK;
797 status = (rsb->rx_status_len >> DESC_STATUS_SHIFT) &
798 DESC_STATUS_MASK;
799
800 netif_dbg(priv, rx_status, ndev,
801 "p=%d, c=%d, rd_ptr=%d, len=%d, flag=0x%04x\n",
802 p_index, priv->rx_c_index, priv->rx_read_ptr,
803 len, status);
804
805 if (unlikely(len > RX_BUF_LENGTH)) {
806 netif_err(priv, rx_status, ndev, "oversized packet\n");
807 ndev->stats.rx_length_errors++;
808 ndev->stats.rx_errors++;
809 dev_kfree_skb_any(skb);
810 goto next;
811 }
812
813 if (unlikely(!(status & DESC_EOP) || !(status & DESC_SOP))) {
814 netif_err(priv, rx_status, ndev, "fragmented packet!\n");
815 ndev->stats.rx_dropped++;
816 ndev->stats.rx_errors++;
817 dev_kfree_skb_any(skb);
818 goto next;
819 }
820
821 if (unlikely(status & (RX_STATUS_ERR | RX_STATUS_OVFLOW))) {
822 netif_err(priv, rx_err, ndev, "error packet\n");
823 if (status & RX_STATUS_OVFLOW)
824 ndev->stats.rx_over_errors++;
825 ndev->stats.rx_dropped++;
826 ndev->stats.rx_errors++;
827 dev_kfree_skb_any(skb);
828 goto next;
829 }
830
831 skb_put(skb, len);
832
833
834 if (likely(status & DESC_L4_CSUM))
835 skb->ip_summed = CHECKSUM_UNNECESSARY;
836
837
838
839
840
841 skb_pull(skb, sizeof(*rsb) + 2);
842 len -= (sizeof(*rsb) + 2);
843 processed_bytes += len;
844
845
846 if (priv->crc_fwd) {
847 skb_trim(skb, len - ETH_FCS_LEN);
848 len -= ETH_FCS_LEN;
849 }
850
851 skb->protocol = eth_type_trans(skb, ndev);
852 ndev->stats.rx_packets++;
853 ndev->stats.rx_bytes += len;
854 u64_stats_update_begin(&priv->syncp);
855 stats64->rx_packets++;
856 stats64->rx_bytes += len;
857 u64_stats_update_end(&priv->syncp);
858
859 napi_gro_receive(&priv->napi, skb);
860next:
861 processed++;
862 priv->rx_read_ptr++;
863
864 if (priv->rx_read_ptr == priv->num_rx_bds)
865 priv->rx_read_ptr = 0;
866 }
867
868 priv->dim.packets = processed;
869 priv->dim.bytes = processed_bytes;
870
871 return processed;
872}
873
874static void bcm_sysport_tx_reclaim_one(struct bcm_sysport_tx_ring *ring,
875 struct bcm_sysport_cb *cb,
876 unsigned int *bytes_compl,
877 unsigned int *pkts_compl)
878{
879 struct bcm_sysport_priv *priv = ring->priv;
880 struct device *kdev = &priv->pdev->dev;
881
882 if (cb->skb) {
883 *bytes_compl += cb->skb->len;
884 dma_unmap_single(kdev, dma_unmap_addr(cb, dma_addr),
885 dma_unmap_len(cb, dma_len),
886 DMA_TO_DEVICE);
887 (*pkts_compl)++;
888 bcm_sysport_free_cb(cb);
889
890 } else if (dma_unmap_addr(cb, dma_addr)) {
891 *bytes_compl += dma_unmap_len(cb, dma_len);
892 dma_unmap_page(kdev, dma_unmap_addr(cb, dma_addr),
893 dma_unmap_len(cb, dma_len), DMA_TO_DEVICE);
894 dma_unmap_addr_set(cb, dma_addr, 0);
895 }
896}
897
898
899static unsigned int __bcm_sysport_tx_reclaim(struct bcm_sysport_priv *priv,
900 struct bcm_sysport_tx_ring *ring)
901{
902 unsigned int pkts_compl = 0, bytes_compl = 0;
903 struct net_device *ndev = priv->netdev;
904 unsigned int txbds_processed = 0;
905 struct bcm_sysport_cb *cb;
906 unsigned int txbds_ready;
907 unsigned int c_index;
908 u32 hw_ind;
909
910
911 if (!ring->priv->is_lite)
912 intrl2_1_writel(ring->priv, BIT(ring->index), INTRL2_CPU_CLEAR);
913 else
914 intrl2_0_writel(ring->priv, BIT(ring->index +
915 INTRL2_0_TDMA_MBDONE_SHIFT), INTRL2_CPU_CLEAR);
916
917
918 hw_ind = tdma_readl(priv, TDMA_DESC_RING_PROD_CONS_INDEX(ring->index));
919 c_index = (hw_ind >> RING_CONS_INDEX_SHIFT) & RING_CONS_INDEX_MASK;
920 txbds_ready = (c_index - ring->c_index) & RING_CONS_INDEX_MASK;
921
922 netif_dbg(priv, tx_done, ndev,
923 "ring=%d old_c_index=%u c_index=%u txbds_ready=%u\n",
924 ring->index, ring->c_index, c_index, txbds_ready);
925
926 while (txbds_processed < txbds_ready) {
927 cb = &ring->cbs[ring->clean_index];
928 bcm_sysport_tx_reclaim_one(ring, cb, &bytes_compl, &pkts_compl);
929
930 ring->desc_count++;
931 txbds_processed++;
932
933 if (likely(ring->clean_index < ring->size - 1))
934 ring->clean_index++;
935 else
936 ring->clean_index = 0;
937 }
938
939 u64_stats_update_begin(&priv->syncp);
940 ring->packets += pkts_compl;
941 ring->bytes += bytes_compl;
942 u64_stats_update_end(&priv->syncp);
943
944 ring->c_index = c_index;
945
946 netif_dbg(priv, tx_done, ndev,
947 "ring=%d c_index=%d pkts_compl=%d, bytes_compl=%d\n",
948 ring->index, ring->c_index, pkts_compl, bytes_compl);
949
950 return pkts_compl;
951}
952
953
954static unsigned int bcm_sysport_tx_reclaim(struct bcm_sysport_priv *priv,
955 struct bcm_sysport_tx_ring *ring)
956{
957 struct netdev_queue *txq;
958 unsigned int released;
959 unsigned long flags;
960
961 txq = netdev_get_tx_queue(priv->netdev, ring->index);
962
963 spin_lock_irqsave(&ring->lock, flags);
964 released = __bcm_sysport_tx_reclaim(priv, ring);
965 if (released)
966 netif_tx_wake_queue(txq);
967
968 spin_unlock_irqrestore(&ring->lock, flags);
969
970 return released;
971}
972
973
974static void bcm_sysport_tx_clean(struct bcm_sysport_priv *priv,
975 struct bcm_sysport_tx_ring *ring)
976{
977 unsigned long flags;
978
979 spin_lock_irqsave(&ring->lock, flags);
980 __bcm_sysport_tx_reclaim(priv, ring);
981 spin_unlock_irqrestore(&ring->lock, flags);
982}
983
984static int bcm_sysport_tx_poll(struct napi_struct *napi, int budget)
985{
986 struct bcm_sysport_tx_ring *ring =
987 container_of(napi, struct bcm_sysport_tx_ring, napi);
988 unsigned int work_done = 0;
989
990 work_done = bcm_sysport_tx_reclaim(ring->priv, ring);
991
992 if (work_done == 0) {
993 napi_complete(napi);
994
995 if (!ring->priv->is_lite)
996 intrl2_1_mask_clear(ring->priv, BIT(ring->index));
997 else
998 intrl2_0_mask_clear(ring->priv, BIT(ring->index +
999 INTRL2_0_TDMA_MBDONE_SHIFT));
1000
1001 return 0;
1002 }
1003
1004 return budget;
1005}
1006
1007static void bcm_sysport_tx_reclaim_all(struct bcm_sysport_priv *priv)
1008{
1009 unsigned int q;
1010
1011 for (q = 0; q < priv->netdev->num_tx_queues; q++)
1012 bcm_sysport_tx_reclaim(priv, &priv->tx_rings[q]);
1013}
1014
1015static int bcm_sysport_poll(struct napi_struct *napi, int budget)
1016{
1017 struct bcm_sysport_priv *priv =
1018 container_of(napi, struct bcm_sysport_priv, napi);
1019 struct dim_sample dim_sample = {};
1020 unsigned int work_done = 0;
1021
1022 work_done = bcm_sysport_desc_rx(priv, budget);
1023
1024 priv->rx_c_index += work_done;
1025 priv->rx_c_index &= RDMA_CONS_INDEX_MASK;
1026
1027
1028
1029
1030
1031 if (!priv->is_lite)
1032 rdma_writel(priv, priv->rx_c_index, RDMA_CONS_INDEX);
1033 else
1034 rdma_writel(priv, priv->rx_c_index << 16, RDMA_CONS_INDEX);
1035
1036 if (work_done < budget) {
1037 napi_complete_done(napi, work_done);
1038
1039 intrl2_0_mask_clear(priv, INTRL2_0_RDMA_MBDONE);
1040 }
1041
1042 if (priv->dim.use_dim) {
1043 dim_update_sample(priv->dim.event_ctr, priv->dim.packets,
1044 priv->dim.bytes, &dim_sample);
1045 net_dim(&priv->dim.dim, dim_sample);
1046 }
1047
1048 return work_done;
1049}
1050
1051static void mpd_enable_set(struct bcm_sysport_priv *priv, bool enable)
1052{
1053 u32 reg, bit;
1054
1055 reg = umac_readl(priv, UMAC_MPD_CTRL);
1056 if (enable)
1057 reg |= MPD_EN;
1058 else
1059 reg &= ~MPD_EN;
1060 umac_writel(priv, reg, UMAC_MPD_CTRL);
1061
1062 if (priv->is_lite)
1063 bit = RBUF_ACPI_EN_LITE;
1064 else
1065 bit = RBUF_ACPI_EN;
1066
1067 reg = rbuf_readl(priv, RBUF_CONTROL);
1068 if (enable)
1069 reg |= bit;
1070 else
1071 reg &= ~bit;
1072 rbuf_writel(priv, reg, RBUF_CONTROL);
1073}
1074
1075static void bcm_sysport_resume_from_wol(struct bcm_sysport_priv *priv)
1076{
1077 unsigned int index;
1078 u32 reg;
1079
1080
1081 reg = rxchk_readl(priv, RXCHK_CONTROL);
1082 reg &= ~(RXCHK_BRCM_TAG_MATCH_MASK <<
1083 RXCHK_BRCM_TAG_MATCH_SHIFT | RXCHK_EN | RXCHK_BRCM_TAG_EN);
1084 rxchk_writel(priv, reg, RXCHK_CONTROL);
1085
1086
1087
1088
1089 for_each_set_bit(index, priv->filters, RXCHK_BRCM_TAG_MAX) {
1090 rxchk_writel(priv, priv->filters_loc[index] <<
1091 RXCHK_BRCM_TAG_CID_SHIFT, RXCHK_BRCM_TAG(index));
1092 rxchk_writel(priv, 0xff00ffff, RXCHK_BRCM_TAG_MASK(index));
1093 }
1094
1095
1096 mpd_enable_set(priv, false);
1097
1098 reg = intrl2_0_readl(priv, INTRL2_CPU_STATUS);
1099 if (reg & INTRL2_0_MPD)
1100 netdev_info(priv->netdev, "Wake-on-LAN (MPD) interrupt!\n");
1101
1102 if (reg & INTRL2_0_BRCM_MATCH_TAG) {
1103 reg = rxchk_readl(priv, RXCHK_BRCM_TAG_MATCH_STATUS) &
1104 RXCHK_BRCM_TAG_MATCH_MASK;
1105 netdev_info(priv->netdev,
1106 "Wake-on-LAN (filters 0x%02x) interrupt!\n", reg);
1107 }
1108
1109 netif_dbg(priv, wol, priv->netdev, "resumed from WOL\n");
1110}
1111
1112static void bcm_sysport_dim_work(struct work_struct *work)
1113{
1114 struct dim *dim = container_of(work, struct dim, work);
1115 struct bcm_sysport_net_dim *ndim =
1116 container_of(dim, struct bcm_sysport_net_dim, dim);
1117 struct bcm_sysport_priv *priv =
1118 container_of(ndim, struct bcm_sysport_priv, dim);
1119 struct dim_cq_moder cur_profile = net_dim_get_rx_moderation(dim->mode,
1120 dim->profile_ix);
1121
1122 bcm_sysport_set_rx_coalesce(priv, cur_profile.usec, cur_profile.pkts);
1123 dim->state = DIM_START_MEASURE;
1124}
1125
1126
1127static irqreturn_t bcm_sysport_rx_isr(int irq, void *dev_id)
1128{
1129 struct net_device *dev = dev_id;
1130 struct bcm_sysport_priv *priv = netdev_priv(dev);
1131 struct bcm_sysport_tx_ring *txr;
1132 unsigned int ring, ring_bit;
1133
1134 priv->irq0_stat = intrl2_0_readl(priv, INTRL2_CPU_STATUS) &
1135 ~intrl2_0_readl(priv, INTRL2_CPU_MASK_STATUS);
1136 intrl2_0_writel(priv, priv->irq0_stat, INTRL2_CPU_CLEAR);
1137
1138 if (unlikely(priv->irq0_stat == 0)) {
1139 netdev_warn(priv->netdev, "spurious RX interrupt\n");
1140 return IRQ_NONE;
1141 }
1142
1143 if (priv->irq0_stat & INTRL2_0_RDMA_MBDONE) {
1144 priv->dim.event_ctr++;
1145 if (likely(napi_schedule_prep(&priv->napi))) {
1146
1147 intrl2_0_mask_set(priv, INTRL2_0_RDMA_MBDONE);
1148 __napi_schedule_irqoff(&priv->napi);
1149 }
1150 }
1151
1152
1153
1154
1155 if (priv->irq0_stat & INTRL2_0_TX_RING_FULL)
1156 bcm_sysport_tx_reclaim_all(priv);
1157
1158 if (!priv->is_lite)
1159 goto out;
1160
1161 for (ring = 0; ring < dev->num_tx_queues; ring++) {
1162 ring_bit = BIT(ring + INTRL2_0_TDMA_MBDONE_SHIFT);
1163 if (!(priv->irq0_stat & ring_bit))
1164 continue;
1165
1166 txr = &priv->tx_rings[ring];
1167
1168 if (likely(napi_schedule_prep(&txr->napi))) {
1169 intrl2_0_mask_set(priv, ring_bit);
1170 __napi_schedule(&txr->napi);
1171 }
1172 }
1173out:
1174 return IRQ_HANDLED;
1175}
1176
1177
1178static irqreturn_t bcm_sysport_tx_isr(int irq, void *dev_id)
1179{
1180 struct net_device *dev = dev_id;
1181 struct bcm_sysport_priv *priv = netdev_priv(dev);
1182 struct bcm_sysport_tx_ring *txr;
1183 unsigned int ring;
1184
1185 priv->irq1_stat = intrl2_1_readl(priv, INTRL2_CPU_STATUS) &
1186 ~intrl2_1_readl(priv, INTRL2_CPU_MASK_STATUS);
1187 intrl2_1_writel(priv, 0xffffffff, INTRL2_CPU_CLEAR);
1188
1189 if (unlikely(priv->irq1_stat == 0)) {
1190 netdev_warn(priv->netdev, "spurious TX interrupt\n");
1191 return IRQ_NONE;
1192 }
1193
1194 for (ring = 0; ring < dev->num_tx_queues; ring++) {
1195 if (!(priv->irq1_stat & BIT(ring)))
1196 continue;
1197
1198 txr = &priv->tx_rings[ring];
1199
1200 if (likely(napi_schedule_prep(&txr->napi))) {
1201 intrl2_1_mask_set(priv, BIT(ring));
1202 __napi_schedule_irqoff(&txr->napi);
1203 }
1204 }
1205
1206 return IRQ_HANDLED;
1207}
1208
1209static irqreturn_t bcm_sysport_wol_isr(int irq, void *dev_id)
1210{
1211 struct bcm_sysport_priv *priv = dev_id;
1212
1213 pm_wakeup_event(&priv->pdev->dev, 0);
1214
1215 return IRQ_HANDLED;
1216}
1217
1218#ifdef CONFIG_NET_POLL_CONTROLLER
1219static void bcm_sysport_poll_controller(struct net_device *dev)
1220{
1221 struct bcm_sysport_priv *priv = netdev_priv(dev);
1222
1223 disable_irq(priv->irq0);
1224 bcm_sysport_rx_isr(priv->irq0, priv);
1225 enable_irq(priv->irq0);
1226
1227 if (!priv->is_lite) {
1228 disable_irq(priv->irq1);
1229 bcm_sysport_tx_isr(priv->irq1, priv);
1230 enable_irq(priv->irq1);
1231 }
1232}
1233#endif
1234
1235static struct sk_buff *bcm_sysport_insert_tsb(struct sk_buff *skb,
1236 struct net_device *dev)
1237{
1238 struct bcm_sysport_priv *priv = netdev_priv(dev);
1239 struct sk_buff *nskb;
1240 struct bcm_tsb *tsb;
1241 u32 csum_info;
1242 u8 ip_proto;
1243 u16 csum_start;
1244 __be16 ip_ver;
1245
1246
1247 if (unlikely(skb_headroom(skb) < sizeof(*tsb))) {
1248 nskb = skb_realloc_headroom(skb, sizeof(*tsb));
1249 if (!nskb) {
1250 dev_kfree_skb_any(skb);
1251 priv->mib.tx_realloc_tsb_failed++;
1252 dev->stats.tx_errors++;
1253 dev->stats.tx_dropped++;
1254 return NULL;
1255 }
1256 dev_consume_skb_any(skb);
1257 skb = nskb;
1258 priv->mib.tx_realloc_tsb++;
1259 }
1260
1261 tsb = skb_push(skb, sizeof(*tsb));
1262
1263 memset(tsb, 0, sizeof(*tsb));
1264
1265 if (skb_vlan_tag_present(skb)) {
1266 tsb->pcp_dei_vid = skb_vlan_tag_get_prio(skb) & PCP_DEI_MASK;
1267 tsb->pcp_dei_vid |= (u32)skb_vlan_tag_get_id(skb) << VID_SHIFT;
1268 }
1269
1270 if (skb->ip_summed == CHECKSUM_PARTIAL) {
1271 ip_ver = skb->protocol;
1272 switch (ip_ver) {
1273 case htons(ETH_P_IP):
1274 ip_proto = ip_hdr(skb)->protocol;
1275 break;
1276 case htons(ETH_P_IPV6):
1277 ip_proto = ipv6_hdr(skb)->nexthdr;
1278 break;
1279 default:
1280 return skb;
1281 }
1282
1283
1284 csum_start = skb_checksum_start_offset(skb) - sizeof(*tsb);
1285
1286 if (skb_vlan_tag_present(skb))
1287 csum_start += VLAN_HLEN;
1288 csum_info = (csum_start + skb->csum_offset) & L4_CSUM_PTR_MASK;
1289 csum_info |= (csum_start << L4_PTR_SHIFT);
1290
1291 if (ip_proto == IPPROTO_TCP || ip_proto == IPPROTO_UDP) {
1292 csum_info |= L4_LENGTH_VALID;
1293 if (ip_proto == IPPROTO_UDP &&
1294 ip_ver == htons(ETH_P_IP))
1295 csum_info |= L4_UDP;
1296 } else {
1297 csum_info = 0;
1298 }
1299
1300 tsb->l4_ptr_dest_map = csum_info;
1301 }
1302
1303 return skb;
1304}
1305
1306static netdev_tx_t bcm_sysport_xmit(struct sk_buff *skb,
1307 struct net_device *dev)
1308{
1309 struct bcm_sysport_priv *priv = netdev_priv(dev);
1310 struct device *kdev = &priv->pdev->dev;
1311 struct bcm_sysport_tx_ring *ring;
1312 unsigned long flags, desc_flags;
1313 struct bcm_sysport_cb *cb;
1314 struct netdev_queue *txq;
1315 u32 len_status, addr_lo;
1316 unsigned int skb_len;
1317 dma_addr_t mapping;
1318 u16 queue;
1319 int ret;
1320
1321 queue = skb_get_queue_mapping(skb);
1322 txq = netdev_get_tx_queue(dev, queue);
1323 ring = &priv->tx_rings[queue];
1324
1325
1326 spin_lock_irqsave(&ring->lock, flags);
1327 if (unlikely(ring->desc_count == 0)) {
1328 netif_tx_stop_queue(txq);
1329 netdev_err(dev, "queue %d awake and ring full!\n", queue);
1330 ret = NETDEV_TX_BUSY;
1331 goto out;
1332 }
1333
1334
1335 if (priv->tsb_en) {
1336 skb = bcm_sysport_insert_tsb(skb, dev);
1337 if (!skb) {
1338 ret = NETDEV_TX_OK;
1339 goto out;
1340 }
1341 }
1342
1343 skb_len = skb->len;
1344
1345 mapping = dma_map_single(kdev, skb->data, skb_len, DMA_TO_DEVICE);
1346 if (dma_mapping_error(kdev, mapping)) {
1347 priv->mib.tx_dma_failed++;
1348 netif_err(priv, tx_err, dev, "DMA map failed at %p (len=%d)\n",
1349 skb->data, skb_len);
1350 ret = NETDEV_TX_OK;
1351 goto out;
1352 }
1353
1354
1355 cb = &ring->cbs[ring->curr_desc];
1356 cb->skb = skb;
1357 dma_unmap_addr_set(cb, dma_addr, mapping);
1358 dma_unmap_len_set(cb, dma_len, skb_len);
1359
1360 addr_lo = lower_32_bits(mapping);
1361 len_status = upper_32_bits(mapping) & DESC_ADDR_HI_MASK;
1362 len_status |= (skb_len << DESC_LEN_SHIFT);
1363 len_status |= (DESC_SOP | DESC_EOP | TX_STATUS_APP_CRC) <<
1364 DESC_STATUS_SHIFT;
1365 if (skb->ip_summed == CHECKSUM_PARTIAL)
1366 len_status |= (DESC_L4_CSUM << DESC_STATUS_SHIFT);
1367 if (skb_vlan_tag_present(skb))
1368 len_status |= (TX_STATUS_VLAN_VID_TSB << DESC_STATUS_SHIFT);
1369
1370 ring->curr_desc++;
1371 if (ring->curr_desc == ring->size)
1372 ring->curr_desc = 0;
1373 ring->desc_count--;
1374
1375
1376 spin_lock_irqsave(&priv->desc_lock, desc_flags);
1377 tdma_writel(priv, len_status, TDMA_WRITE_PORT_HI(ring->index));
1378 tdma_writel(priv, addr_lo, TDMA_WRITE_PORT_LO(ring->index));
1379 spin_unlock_irqrestore(&priv->desc_lock, desc_flags);
1380
1381
1382 if (ring->desc_count == 0)
1383 netif_tx_stop_queue(txq);
1384
1385 netif_dbg(priv, tx_queued, dev, "ring=%d desc_count=%d, curr_desc=%d\n",
1386 ring->index, ring->desc_count, ring->curr_desc);
1387
1388 ret = NETDEV_TX_OK;
1389out:
1390 spin_unlock_irqrestore(&ring->lock, flags);
1391 return ret;
1392}
1393
1394static void bcm_sysport_tx_timeout(struct net_device *dev, unsigned int txqueue)
1395{
1396 netdev_warn(dev, "transmit timeout!\n");
1397
1398 netif_trans_update(dev);
1399 dev->stats.tx_errors++;
1400
1401 netif_tx_wake_all_queues(dev);
1402}
1403
1404
1405static void bcm_sysport_adj_link(struct net_device *dev)
1406{
1407 struct bcm_sysport_priv *priv = netdev_priv(dev);
1408 struct phy_device *phydev = dev->phydev;
1409 unsigned int changed = 0;
1410 u32 cmd_bits = 0, reg;
1411
1412 if (priv->old_link != phydev->link) {
1413 changed = 1;
1414 priv->old_link = phydev->link;
1415 }
1416
1417 if (priv->old_duplex != phydev->duplex) {
1418 changed = 1;
1419 priv->old_duplex = phydev->duplex;
1420 }
1421
1422 if (priv->is_lite)
1423 goto out;
1424
1425 switch (phydev->speed) {
1426 case SPEED_2500:
1427 cmd_bits = CMD_SPEED_2500;
1428 break;
1429 case SPEED_1000:
1430 cmd_bits = CMD_SPEED_1000;
1431 break;
1432 case SPEED_100:
1433 cmd_bits = CMD_SPEED_100;
1434 break;
1435 case SPEED_10:
1436 cmd_bits = CMD_SPEED_10;
1437 break;
1438 default:
1439 break;
1440 }
1441 cmd_bits <<= CMD_SPEED_SHIFT;
1442
1443 if (phydev->duplex == DUPLEX_HALF)
1444 cmd_bits |= CMD_HD_EN;
1445
1446 if (priv->old_pause != phydev->pause) {
1447 changed = 1;
1448 priv->old_pause = phydev->pause;
1449 }
1450
1451 if (!phydev->pause)
1452 cmd_bits |= CMD_RX_PAUSE_IGNORE | CMD_TX_PAUSE_IGNORE;
1453
1454 if (!changed)
1455 return;
1456
1457 if (phydev->link) {
1458 reg = umac_readl(priv, UMAC_CMD);
1459 reg &= ~((CMD_SPEED_MASK << CMD_SPEED_SHIFT) |
1460 CMD_HD_EN | CMD_RX_PAUSE_IGNORE |
1461 CMD_TX_PAUSE_IGNORE);
1462 reg |= cmd_bits;
1463 umac_writel(priv, reg, UMAC_CMD);
1464 }
1465out:
1466 if (changed)
1467 phy_print_status(phydev);
1468}
1469
1470static void bcm_sysport_init_dim(struct bcm_sysport_priv *priv,
1471 void (*cb)(struct work_struct *work))
1472{
1473 struct bcm_sysport_net_dim *dim = &priv->dim;
1474
1475 INIT_WORK(&dim->dim.work, cb);
1476 dim->dim.mode = DIM_CQ_PERIOD_MODE_START_FROM_EQE;
1477 dim->event_ctr = 0;
1478 dim->packets = 0;
1479 dim->bytes = 0;
1480}
1481
1482static void bcm_sysport_init_rx_coalesce(struct bcm_sysport_priv *priv)
1483{
1484 struct bcm_sysport_net_dim *dim = &priv->dim;
1485 struct dim_cq_moder moder;
1486 u32 usecs, pkts;
1487
1488 usecs = priv->rx_coalesce_usecs;
1489 pkts = priv->rx_max_coalesced_frames;
1490
1491
1492 if (dim->use_dim) {
1493 moder = net_dim_get_def_rx_moderation(dim->dim.mode);
1494 usecs = moder.usec;
1495 pkts = moder.pkts;
1496 }
1497
1498 bcm_sysport_set_rx_coalesce(priv, usecs, pkts);
1499}
1500
1501static int bcm_sysport_init_tx_ring(struct bcm_sysport_priv *priv,
1502 unsigned int index)
1503{
1504 struct bcm_sysport_tx_ring *ring = &priv->tx_rings[index];
1505 size_t size;
1506 u32 reg;
1507
1508
1509 size = 256;
1510
1511 ring->cbs = kcalloc(size, sizeof(struct bcm_sysport_cb), GFP_KERNEL);
1512 if (!ring->cbs) {
1513 netif_err(priv, hw, priv->netdev, "CB allocation failed\n");
1514 return -ENOMEM;
1515 }
1516
1517
1518 spin_lock_init(&ring->lock);
1519 ring->priv = priv;
1520 netif_tx_napi_add(priv->netdev, &ring->napi, bcm_sysport_tx_poll, 64);
1521 ring->index = index;
1522 ring->size = size;
1523 ring->clean_index = 0;
1524 ring->alloc_size = ring->size;
1525 ring->desc_count = ring->size;
1526 ring->curr_desc = 0;
1527
1528
1529 tdma_writel(priv, RING_EN, TDMA_DESC_RING_HEAD_TAIL_PTR(index));
1530 tdma_writel(priv, 0, TDMA_DESC_RING_COUNT(index));
1531 tdma_writel(priv, 1, TDMA_DESC_RING_INTR_CONTROL(index));
1532 tdma_writel(priv, 0, TDMA_DESC_RING_PROD_CONS_INDEX(index));
1533
1534
1535 reg = tdma_readl(priv, TDMA_DESC_RING_MAPPING(index));
1536 reg &= ~(RING_QID_MASK | RING_PORT_ID_MASK << RING_PORT_ID_SHIFT);
1537 if (ring->inspect) {
1538 reg |= ring->switch_queue & RING_QID_MASK;
1539 reg |= ring->switch_port << RING_PORT_ID_SHIFT;
1540 } else {
1541 reg |= RING_IGNORE_STATUS;
1542 }
1543 tdma_writel(priv, reg, TDMA_DESC_RING_MAPPING(index));
1544 reg = 0;
1545
1546
1547
1548 if (priv->netdev->features & NETIF_F_HW_VLAN_CTAG_TX)
1549 reg = VLAN_HLEN << RING_PKT_SIZE_ADJ_SHIFT;
1550 tdma_writel(priv, reg, TDMA_DESC_RING_PCP_DEI_VID(index));
1551
1552
1553 reg = tdma_readl(priv, TDMA_CONTROL);
1554 reg |= tdma_control_bit(priv, ACB_ALGO);
1555 tdma_writel(priv, reg, TDMA_CONTROL);
1556
1557
1558
1559
1560 reg = tdma_readl(priv, TDMA_CONTROL);
1561 if (priv->is_lite)
1562 reg &= ~BIT(TSB_SWAP1);
1563
1564 if (!IS_ENABLED(CONFIG_CPU_BIG_ENDIAN))
1565 reg |= tdma_control_bit(priv, TSB_SWAP0);
1566 else
1567 reg &= ~tdma_control_bit(priv, TSB_SWAP0);
1568 tdma_writel(priv, reg, TDMA_CONTROL);
1569
1570
1571
1572
1573 tdma_writel(priv, ring->size |
1574 1 << RING_HYST_THRESH_SHIFT,
1575 TDMA_DESC_RING_MAX_HYST(index));
1576
1577
1578 reg = tdma_readl(priv, TDMA_TIER1_ARB_0_QUEUE_EN);
1579 reg |= (1 << index);
1580 tdma_writel(priv, reg, TDMA_TIER1_ARB_0_QUEUE_EN);
1581
1582 napi_enable(&ring->napi);
1583
1584 netif_dbg(priv, hw, priv->netdev,
1585 "TDMA cfg, size=%d, switch q=%d,port=%d\n",
1586 ring->size, ring->switch_queue,
1587 ring->switch_port);
1588
1589 return 0;
1590}
1591
1592static void bcm_sysport_fini_tx_ring(struct bcm_sysport_priv *priv,
1593 unsigned int index)
1594{
1595 struct bcm_sysport_tx_ring *ring = &priv->tx_rings[index];
1596 u32 reg;
1597
1598
1599 reg = tdma_readl(priv, TDMA_STATUS);
1600 if (!(reg & TDMA_DISABLED))
1601 netdev_warn(priv->netdev, "TDMA not stopped!\n");
1602
1603
1604
1605
1606
1607 if (!ring->cbs)
1608 return;
1609
1610 napi_disable(&ring->napi);
1611 netif_napi_del(&ring->napi);
1612
1613 bcm_sysport_tx_clean(priv, ring);
1614
1615 kfree(ring->cbs);
1616 ring->cbs = NULL;
1617 ring->size = 0;
1618 ring->alloc_size = 0;
1619
1620 netif_dbg(priv, hw, priv->netdev, "TDMA fini done\n");
1621}
1622
1623
1624static inline int rdma_enable_set(struct bcm_sysport_priv *priv,
1625 unsigned int enable)
1626{
1627 unsigned int timeout = 1000;
1628 u32 reg;
1629
1630 reg = rdma_readl(priv, RDMA_CONTROL);
1631 if (enable)
1632 reg |= RDMA_EN;
1633 else
1634 reg &= ~RDMA_EN;
1635 rdma_writel(priv, reg, RDMA_CONTROL);
1636
1637
1638 do {
1639 reg = rdma_readl(priv, RDMA_STATUS);
1640 if (!!(reg & RDMA_DISABLED) == !enable)
1641 return 0;
1642 usleep_range(1000, 2000);
1643 } while (timeout-- > 0);
1644
1645 netdev_err(priv->netdev, "timeout waiting for RDMA to finish\n");
1646
1647 return -ETIMEDOUT;
1648}
1649
1650
1651static inline int tdma_enable_set(struct bcm_sysport_priv *priv,
1652 unsigned int enable)
1653{
1654 unsigned int timeout = 1000;
1655 u32 reg;
1656
1657 reg = tdma_readl(priv, TDMA_CONTROL);
1658 if (enable)
1659 reg |= tdma_control_bit(priv, TDMA_EN);
1660 else
1661 reg &= ~tdma_control_bit(priv, TDMA_EN);
1662 tdma_writel(priv, reg, TDMA_CONTROL);
1663
1664
1665 do {
1666 reg = tdma_readl(priv, TDMA_STATUS);
1667 if (!!(reg & TDMA_DISABLED) == !enable)
1668 return 0;
1669
1670 usleep_range(1000, 2000);
1671 } while (timeout-- > 0);
1672
1673 netdev_err(priv->netdev, "timeout waiting for TDMA to finish\n");
1674
1675 return -ETIMEDOUT;
1676}
1677
1678static int bcm_sysport_init_rx_ring(struct bcm_sysport_priv *priv)
1679{
1680 struct bcm_sysport_cb *cb;
1681 u32 reg;
1682 int ret;
1683 int i;
1684
1685
1686 priv->num_rx_bds = priv->num_rx_desc_words / WORDS_PER_DESC;
1687 priv->rx_bds = priv->base + SYS_PORT_RDMA_OFFSET;
1688 priv->rx_c_index = 0;
1689 priv->rx_read_ptr = 0;
1690 priv->rx_cbs = kcalloc(priv->num_rx_bds, sizeof(struct bcm_sysport_cb),
1691 GFP_KERNEL);
1692 if (!priv->rx_cbs) {
1693 netif_err(priv, hw, priv->netdev, "CB allocation failed\n");
1694 return -ENOMEM;
1695 }
1696
1697 for (i = 0; i < priv->num_rx_bds; i++) {
1698 cb = priv->rx_cbs + i;
1699 cb->bd_addr = priv->rx_bds + i * DESC_SIZE;
1700 }
1701
1702 ret = bcm_sysport_alloc_rx_bufs(priv);
1703 if (ret) {
1704 netif_err(priv, hw, priv->netdev, "SKB allocation failed\n");
1705 return ret;
1706 }
1707
1708
1709 reg = rdma_readl(priv, RDMA_STATUS);
1710 if (!(reg & RDMA_DISABLED))
1711 rdma_enable_set(priv, 0);
1712
1713 rdma_writel(priv, 0, RDMA_WRITE_PTR_LO);
1714 rdma_writel(priv, 0, RDMA_WRITE_PTR_HI);
1715 rdma_writel(priv, 0, RDMA_PROD_INDEX);
1716 rdma_writel(priv, 0, RDMA_CONS_INDEX);
1717 rdma_writel(priv, priv->num_rx_bds << RDMA_RING_SIZE_SHIFT |
1718 RX_BUF_LENGTH, RDMA_RING_BUF_SIZE);
1719
1720 rdma_writel(priv, 0, RDMA_START_ADDR_HI);
1721 rdma_writel(priv, 0, RDMA_START_ADDR_LO);
1722 rdma_writel(priv, 0, RDMA_END_ADDR_HI);
1723 rdma_writel(priv, priv->num_rx_desc_words - 1, RDMA_END_ADDR_LO);
1724
1725 netif_dbg(priv, hw, priv->netdev,
1726 "RDMA cfg, num_rx_bds=%d, rx_bds=%p\n",
1727 priv->num_rx_bds, priv->rx_bds);
1728
1729 return 0;
1730}
1731
1732static void bcm_sysport_fini_rx_ring(struct bcm_sysport_priv *priv)
1733{
1734 struct bcm_sysport_cb *cb;
1735 unsigned int i;
1736 u32 reg;
1737
1738
1739 reg = rdma_readl(priv, RDMA_STATUS);
1740 if (!(reg & RDMA_DISABLED))
1741 netdev_warn(priv->netdev, "RDMA not stopped!\n");
1742
1743 for (i = 0; i < priv->num_rx_bds; i++) {
1744 cb = &priv->rx_cbs[i];
1745 if (dma_unmap_addr(cb, dma_addr))
1746 dma_unmap_single(&priv->pdev->dev,
1747 dma_unmap_addr(cb, dma_addr),
1748 RX_BUF_LENGTH, DMA_FROM_DEVICE);
1749 bcm_sysport_free_cb(cb);
1750 }
1751
1752 kfree(priv->rx_cbs);
1753 priv->rx_cbs = NULL;
1754
1755 netif_dbg(priv, hw, priv->netdev, "RDMA fini done\n");
1756}
1757
1758static void bcm_sysport_set_rx_mode(struct net_device *dev)
1759{
1760 struct bcm_sysport_priv *priv = netdev_priv(dev);
1761 u32 reg;
1762
1763 if (priv->is_lite)
1764 return;
1765
1766 reg = umac_readl(priv, UMAC_CMD);
1767 if (dev->flags & IFF_PROMISC)
1768 reg |= CMD_PROMISC;
1769 else
1770 reg &= ~CMD_PROMISC;
1771 umac_writel(priv, reg, UMAC_CMD);
1772
1773
1774 if (dev->flags & IFF_ALLMULTI)
1775 return;
1776}
1777
1778static inline void umac_enable_set(struct bcm_sysport_priv *priv,
1779 u32 mask, unsigned int enable)
1780{
1781 u32 reg;
1782
1783 if (!priv->is_lite) {
1784 reg = umac_readl(priv, UMAC_CMD);
1785 if (enable)
1786 reg |= mask;
1787 else
1788 reg &= ~mask;
1789 umac_writel(priv, reg, UMAC_CMD);
1790 } else {
1791 reg = gib_readl(priv, GIB_CONTROL);
1792 if (enable)
1793 reg |= mask;
1794 else
1795 reg &= ~mask;
1796 gib_writel(priv, reg, GIB_CONTROL);
1797 }
1798
1799
1800
1801
1802 if (enable == 0)
1803 usleep_range(1000, 2000);
1804}
1805
1806static inline void umac_reset(struct bcm_sysport_priv *priv)
1807{
1808 u32 reg;
1809
1810 if (priv->is_lite)
1811 return;
1812
1813 reg = umac_readl(priv, UMAC_CMD);
1814 reg |= CMD_SW_RESET;
1815 umac_writel(priv, reg, UMAC_CMD);
1816 udelay(10);
1817 reg = umac_readl(priv, UMAC_CMD);
1818 reg &= ~CMD_SW_RESET;
1819 umac_writel(priv, reg, UMAC_CMD);
1820}
1821
1822static void umac_set_hw_addr(struct bcm_sysport_priv *priv,
1823 const unsigned char *addr)
1824{
1825 u32 mac0 = (addr[0] << 24) | (addr[1] << 16) | (addr[2] << 8) |
1826 addr[3];
1827 u32 mac1 = (addr[4] << 8) | addr[5];
1828
1829 if (!priv->is_lite) {
1830 umac_writel(priv, mac0, UMAC_MAC0);
1831 umac_writel(priv, mac1, UMAC_MAC1);
1832 } else {
1833 gib_writel(priv, mac0, GIB_MAC0);
1834 gib_writel(priv, mac1, GIB_MAC1);
1835 }
1836}
1837
1838static void topctrl_flush(struct bcm_sysport_priv *priv)
1839{
1840 topctrl_writel(priv, RX_FLUSH, RX_FLUSH_CNTL);
1841 topctrl_writel(priv, TX_FLUSH, TX_FLUSH_CNTL);
1842 mdelay(1);
1843 topctrl_writel(priv, 0, RX_FLUSH_CNTL);
1844 topctrl_writel(priv, 0, TX_FLUSH_CNTL);
1845}
1846
1847static int bcm_sysport_change_mac(struct net_device *dev, void *p)
1848{
1849 struct bcm_sysport_priv *priv = netdev_priv(dev);
1850 struct sockaddr *addr = p;
1851
1852 if (!is_valid_ether_addr(addr->sa_data))
1853 return -EINVAL;
1854
1855 eth_hw_addr_set(dev, addr->sa_data);
1856
1857
1858
1859
1860 if (!netif_running(dev))
1861 return 0;
1862
1863 umac_set_hw_addr(priv, dev->dev_addr);
1864
1865 return 0;
1866}
1867
1868static void bcm_sysport_get_stats64(struct net_device *dev,
1869 struct rtnl_link_stats64 *stats)
1870{
1871 struct bcm_sysport_priv *priv = netdev_priv(dev);
1872 struct bcm_sysport_stats64 *stats64 = &priv->stats64;
1873 unsigned int start;
1874
1875 netdev_stats_to_stats64(stats, &dev->stats);
1876
1877 bcm_sysport_update_tx_stats(priv, &stats->tx_bytes,
1878 &stats->tx_packets);
1879
1880 do {
1881 start = u64_stats_fetch_begin_irq(&priv->syncp);
1882 stats->rx_packets = stats64->rx_packets;
1883 stats->rx_bytes = stats64->rx_bytes;
1884 } while (u64_stats_fetch_retry_irq(&priv->syncp, start));
1885}
1886
1887static void bcm_sysport_netif_start(struct net_device *dev)
1888{
1889 struct bcm_sysport_priv *priv = netdev_priv(dev);
1890
1891
1892 bcm_sysport_init_dim(priv, bcm_sysport_dim_work);
1893 bcm_sysport_init_rx_coalesce(priv);
1894 napi_enable(&priv->napi);
1895
1896
1897 intrl2_0_mask_clear(priv, INTRL2_0_RDMA_MBDONE | INTRL2_0_TX_RING_FULL);
1898
1899 phy_start(dev->phydev);
1900
1901
1902 if (!priv->is_lite)
1903 intrl2_1_mask_clear(priv, 0xffffffff);
1904 else
1905 intrl2_0_mask_clear(priv, INTRL2_0_TDMA_MBDONE_MASK);
1906}
1907
1908static void rbuf_init(struct bcm_sysport_priv *priv)
1909{
1910 u32 reg;
1911
1912 reg = rbuf_readl(priv, RBUF_CONTROL);
1913 reg |= RBUF_4B_ALGN | RBUF_RSB_EN;
1914
1915 if (priv->is_lite)
1916 reg &= ~RBUF_RSB_SWAP1;
1917
1918
1919 if (!IS_ENABLED(CONFIG_CPU_BIG_ENDIAN))
1920 reg |= RBUF_RSB_SWAP0;
1921 else
1922 reg &= ~RBUF_RSB_SWAP0;
1923 rbuf_writel(priv, reg, RBUF_CONTROL);
1924}
1925
1926static inline void bcm_sysport_mask_all_intrs(struct bcm_sysport_priv *priv)
1927{
1928 intrl2_0_mask_set(priv, 0xffffffff);
1929 intrl2_0_writel(priv, 0xffffffff, INTRL2_CPU_CLEAR);
1930 if (!priv->is_lite) {
1931 intrl2_1_mask_set(priv, 0xffffffff);
1932 intrl2_1_writel(priv, 0xffffffff, INTRL2_CPU_CLEAR);
1933 }
1934}
1935
1936static inline void gib_set_pad_extension(struct bcm_sysport_priv *priv)
1937{
1938 u32 reg;
1939
1940 reg = gib_readl(priv, GIB_CONTROL);
1941
1942 if (netdev_uses_dsa(priv->netdev)) {
1943 reg &= ~(GIB_PAD_EXTENSION_MASK << GIB_PAD_EXTENSION_SHIFT);
1944 reg |= ENET_BRCM_TAG_LEN << GIB_PAD_EXTENSION_SHIFT;
1945 }
1946 reg &= ~(GIB_IPG_LEN_MASK << GIB_IPG_LEN_SHIFT);
1947 reg |= 12 << GIB_IPG_LEN_SHIFT;
1948 gib_writel(priv, reg, GIB_CONTROL);
1949}
1950
1951static int bcm_sysport_open(struct net_device *dev)
1952{
1953 struct bcm_sysport_priv *priv = netdev_priv(dev);
1954 struct phy_device *phydev;
1955 unsigned int i;
1956 int ret;
1957
1958 clk_prepare_enable(priv->clk);
1959
1960
1961 umac_reset(priv);
1962
1963
1964 topctrl_flush(priv);
1965
1966
1967 umac_enable_set(priv, CMD_RX_EN | CMD_TX_EN, 0);
1968
1969
1970 rbuf_init(priv);
1971
1972
1973 if (!priv->is_lite)
1974 umac_writel(priv, UMAC_MAX_MTU_SIZE, UMAC_MAX_FRAME_LEN);
1975 else
1976 gib_set_pad_extension(priv);
1977
1978
1979
1980
1981 bcm_sysport_set_features(dev, dev->features);
1982
1983
1984 umac_set_hw_addr(priv, dev->dev_addr);
1985
1986 phydev = of_phy_connect(dev, priv->phy_dn, bcm_sysport_adj_link,
1987 0, priv->phy_interface);
1988 if (!phydev) {
1989 netdev_err(dev, "could not attach to PHY\n");
1990 ret = -ENODEV;
1991 goto out_clk_disable;
1992 }
1993
1994
1995 priv->old_duplex = -1;
1996 priv->old_link = -1;
1997 priv->old_pause = -1;
1998
1999
2000 bcm_sysport_mask_all_intrs(priv);
2001
2002 ret = request_irq(priv->irq0, bcm_sysport_rx_isr, 0, dev->name, dev);
2003 if (ret) {
2004 netdev_err(dev, "failed to request RX interrupt\n");
2005 goto out_phy_disconnect;
2006 }
2007
2008 if (!priv->is_lite) {
2009 ret = request_irq(priv->irq1, bcm_sysport_tx_isr, 0,
2010 dev->name, dev);
2011 if (ret) {
2012 netdev_err(dev, "failed to request TX interrupt\n");
2013 goto out_free_irq0;
2014 }
2015 }
2016
2017
2018 spin_lock_init(&priv->desc_lock);
2019 for (i = 0; i < dev->num_tx_queues; i++) {
2020 ret = bcm_sysport_init_tx_ring(priv, i);
2021 if (ret) {
2022 netdev_err(dev, "failed to initialize TX ring %d\n",
2023 i);
2024 goto out_free_tx_ring;
2025 }
2026 }
2027
2028
2029 tdma_writel(priv, TDMA_LL_RAM_INIT_BUSY, TDMA_STATUS);
2030
2031
2032 ret = bcm_sysport_init_rx_ring(priv);
2033 if (ret) {
2034 netdev_err(dev, "failed to initialize RX ring\n");
2035 goto out_free_rx_ring;
2036 }
2037
2038
2039 ret = rdma_enable_set(priv, 1);
2040 if (ret)
2041 goto out_free_rx_ring;
2042
2043
2044 ret = tdma_enable_set(priv, 1);
2045 if (ret)
2046 goto out_clear_rx_int;
2047
2048
2049 umac_enable_set(priv, CMD_RX_EN | CMD_TX_EN, 1);
2050
2051 bcm_sysport_netif_start(dev);
2052
2053 netif_tx_start_all_queues(dev);
2054
2055 return 0;
2056
2057out_clear_rx_int:
2058 intrl2_0_mask_set(priv, INTRL2_0_RDMA_MBDONE | INTRL2_0_TX_RING_FULL);
2059out_free_rx_ring:
2060 bcm_sysport_fini_rx_ring(priv);
2061out_free_tx_ring:
2062 for (i = 0; i < dev->num_tx_queues; i++)
2063 bcm_sysport_fini_tx_ring(priv, i);
2064 if (!priv->is_lite)
2065 free_irq(priv->irq1, dev);
2066out_free_irq0:
2067 free_irq(priv->irq0, dev);
2068out_phy_disconnect:
2069 phy_disconnect(phydev);
2070out_clk_disable:
2071 clk_disable_unprepare(priv->clk);
2072 return ret;
2073}
2074
2075static void bcm_sysport_netif_stop(struct net_device *dev)
2076{
2077 struct bcm_sysport_priv *priv = netdev_priv(dev);
2078
2079
2080 netif_tx_disable(dev);
2081 napi_disable(&priv->napi);
2082 cancel_work_sync(&priv->dim.dim.work);
2083 phy_stop(dev->phydev);
2084
2085
2086 bcm_sysport_mask_all_intrs(priv);
2087}
2088
2089static int bcm_sysport_stop(struct net_device *dev)
2090{
2091 struct bcm_sysport_priv *priv = netdev_priv(dev);
2092 unsigned int i;
2093 int ret;
2094
2095 bcm_sysport_netif_stop(dev);
2096
2097
2098 umac_enable_set(priv, CMD_RX_EN, 0);
2099
2100 ret = tdma_enable_set(priv, 0);
2101 if (ret) {
2102 netdev_err(dev, "timeout disabling RDMA\n");
2103 return ret;
2104 }
2105
2106
2107 usleep_range(2000, 3000);
2108
2109 ret = rdma_enable_set(priv, 0);
2110 if (ret) {
2111 netdev_err(dev, "timeout disabling TDMA\n");
2112 return ret;
2113 }
2114
2115
2116 umac_enable_set(priv, CMD_TX_EN, 0);
2117
2118
2119 for (i = 0; i < dev->num_tx_queues; i++)
2120 bcm_sysport_fini_tx_ring(priv, i);
2121 bcm_sysport_fini_rx_ring(priv);
2122
2123 free_irq(priv->irq0, dev);
2124 if (!priv->is_lite)
2125 free_irq(priv->irq1, dev);
2126
2127
2128 phy_disconnect(dev->phydev);
2129
2130 clk_disable_unprepare(priv->clk);
2131
2132 return 0;
2133}
2134
2135static int bcm_sysport_rule_find(struct bcm_sysport_priv *priv,
2136 u64 location)
2137{
2138 unsigned int index;
2139 u32 reg;
2140
2141 for_each_set_bit(index, priv->filters, RXCHK_BRCM_TAG_MAX) {
2142 reg = rxchk_readl(priv, RXCHK_BRCM_TAG(index));
2143 reg >>= RXCHK_BRCM_TAG_CID_SHIFT;
2144 reg &= RXCHK_BRCM_TAG_CID_MASK;
2145 if (reg == location)
2146 return index;
2147 }
2148
2149 return -EINVAL;
2150}
2151
2152static int bcm_sysport_rule_get(struct bcm_sysport_priv *priv,
2153 struct ethtool_rxnfc *nfc)
2154{
2155 int index;
2156
2157
2158 index = bcm_sysport_rule_find(priv, nfc->fs.location);
2159 if (index < 0)
2160 return -EOPNOTSUPP;
2161
2162 nfc->fs.ring_cookie = RX_CLS_FLOW_WAKE;
2163
2164 return 0;
2165}
2166
2167static int bcm_sysport_rule_set(struct bcm_sysport_priv *priv,
2168 struct ethtool_rxnfc *nfc)
2169{
2170 unsigned int index;
2171 u32 reg;
2172
2173
2174
2175
2176 if (nfc->fs.location > RXCHK_BRCM_TAG_CID_MASK)
2177 return -E2BIG;
2178
2179
2180 if (nfc->fs.ring_cookie != RX_CLS_FLOW_WAKE)
2181 return -EOPNOTSUPP;
2182
2183
2184 if (bitmap_weight(priv->filters, RXCHK_BRCM_TAG_MAX) ==
2185 RXCHK_BRCM_TAG_MAX)
2186 return -ENOSPC;
2187
2188 index = find_first_zero_bit(priv->filters, RXCHK_BRCM_TAG_MAX);
2189 if (index >= RXCHK_BRCM_TAG_MAX)
2190 return -ENOSPC;
2191
2192
2193
2194
2195 reg = rxchk_readl(priv, RXCHK_BRCM_TAG(index));
2196 reg &= ~(RXCHK_BRCM_TAG_CID_MASK << RXCHK_BRCM_TAG_CID_SHIFT);
2197 reg |= nfc->fs.location << RXCHK_BRCM_TAG_CID_SHIFT;
2198 rxchk_writel(priv, reg, RXCHK_BRCM_TAG(index));
2199 rxchk_writel(priv, 0xff00ffff, RXCHK_BRCM_TAG_MASK(index));
2200
2201 priv->filters_loc[index] = nfc->fs.location;
2202 set_bit(index, priv->filters);
2203
2204 return 0;
2205}
2206
2207static int bcm_sysport_rule_del(struct bcm_sysport_priv *priv,
2208 u64 location)
2209{
2210 int index;
2211
2212
2213 index = bcm_sysport_rule_find(priv, location);
2214 if (index < 0)
2215 return -EOPNOTSUPP;
2216
2217
2218
2219
2220 clear_bit(index, priv->filters);
2221 priv->filters_loc[index] = 0;
2222
2223 return 0;
2224}
2225
2226static int bcm_sysport_get_rxnfc(struct net_device *dev,
2227 struct ethtool_rxnfc *nfc, u32 *rule_locs)
2228{
2229 struct bcm_sysport_priv *priv = netdev_priv(dev);
2230 int ret = -EOPNOTSUPP;
2231
2232 switch (nfc->cmd) {
2233 case ETHTOOL_GRXCLSRULE:
2234 ret = bcm_sysport_rule_get(priv, nfc);
2235 break;
2236 default:
2237 break;
2238 }
2239
2240 return ret;
2241}
2242
2243static int bcm_sysport_set_rxnfc(struct net_device *dev,
2244 struct ethtool_rxnfc *nfc)
2245{
2246 struct bcm_sysport_priv *priv = netdev_priv(dev);
2247 int ret = -EOPNOTSUPP;
2248
2249 switch (nfc->cmd) {
2250 case ETHTOOL_SRXCLSRLINS:
2251 ret = bcm_sysport_rule_set(priv, nfc);
2252 break;
2253 case ETHTOOL_SRXCLSRLDEL:
2254 ret = bcm_sysport_rule_del(priv, nfc->fs.location);
2255 break;
2256 default:
2257 break;
2258 }
2259
2260 return ret;
2261}
2262
2263static const struct ethtool_ops bcm_sysport_ethtool_ops = {
2264 .supported_coalesce_params = ETHTOOL_COALESCE_USECS |
2265 ETHTOOL_COALESCE_MAX_FRAMES |
2266 ETHTOOL_COALESCE_USE_ADAPTIVE_RX,
2267 .get_drvinfo = bcm_sysport_get_drvinfo,
2268 .get_msglevel = bcm_sysport_get_msglvl,
2269 .set_msglevel = bcm_sysport_set_msglvl,
2270 .get_link = ethtool_op_get_link,
2271 .get_strings = bcm_sysport_get_strings,
2272 .get_ethtool_stats = bcm_sysport_get_stats,
2273 .get_sset_count = bcm_sysport_get_sset_count,
2274 .get_wol = bcm_sysport_get_wol,
2275 .set_wol = bcm_sysport_set_wol,
2276 .get_coalesce = bcm_sysport_get_coalesce,
2277 .set_coalesce = bcm_sysport_set_coalesce,
2278 .get_link_ksettings = phy_ethtool_get_link_ksettings,
2279 .set_link_ksettings = phy_ethtool_set_link_ksettings,
2280 .get_rxnfc = bcm_sysport_get_rxnfc,
2281 .set_rxnfc = bcm_sysport_set_rxnfc,
2282};
2283
2284static u16 bcm_sysport_select_queue(struct net_device *dev, struct sk_buff *skb,
2285 struct net_device *sb_dev)
2286{
2287 struct bcm_sysport_priv *priv = netdev_priv(dev);
2288 u16 queue = skb_get_queue_mapping(skb);
2289 struct bcm_sysport_tx_ring *tx_ring;
2290 unsigned int q, port;
2291
2292 if (!netdev_uses_dsa(dev))
2293 return netdev_pick_tx(dev, skb, NULL);
2294
2295
2296 q = BRCM_TAG_GET_QUEUE(queue);
2297 port = BRCM_TAG_GET_PORT(queue);
2298 tx_ring = priv->ring_map[q + port * priv->per_port_num_tx_queues];
2299
2300 if (unlikely(!tx_ring))
2301 return netdev_pick_tx(dev, skb, NULL);
2302
2303 return tx_ring->index;
2304}
2305
2306static const struct net_device_ops bcm_sysport_netdev_ops = {
2307 .ndo_start_xmit = bcm_sysport_xmit,
2308 .ndo_tx_timeout = bcm_sysport_tx_timeout,
2309 .ndo_open = bcm_sysport_open,
2310 .ndo_stop = bcm_sysport_stop,
2311 .ndo_set_features = bcm_sysport_set_features,
2312 .ndo_set_rx_mode = bcm_sysport_set_rx_mode,
2313 .ndo_set_mac_address = bcm_sysport_change_mac,
2314#ifdef CONFIG_NET_POLL_CONTROLLER
2315 .ndo_poll_controller = bcm_sysport_poll_controller,
2316#endif
2317 .ndo_get_stats64 = bcm_sysport_get_stats64,
2318 .ndo_select_queue = bcm_sysport_select_queue,
2319};
2320
2321static int bcm_sysport_map_queues(struct net_device *dev,
2322 struct net_device *slave_dev)
2323{
2324 struct dsa_port *dp = dsa_port_from_netdev(slave_dev);
2325 struct bcm_sysport_priv *priv = netdev_priv(dev);
2326 struct bcm_sysport_tx_ring *ring;
2327 unsigned int num_tx_queues;
2328 unsigned int q, qp, port;
2329
2330
2331
2332
2333 if (dp->ds->index)
2334 return 0;
2335
2336 port = dp->index;
2337
2338
2339
2340
2341
2342
2343
2344 if (priv->is_lite)
2345 netif_set_real_num_tx_queues(slave_dev,
2346 slave_dev->num_tx_queues / 2);
2347
2348 num_tx_queues = slave_dev->real_num_tx_queues;
2349
2350 if (priv->per_port_num_tx_queues &&
2351 priv->per_port_num_tx_queues != num_tx_queues)
2352 netdev_warn(slave_dev, "asymmetric number of per-port queues\n");
2353
2354 priv->per_port_num_tx_queues = num_tx_queues;
2355
2356 for (q = 0, qp = 0; q < dev->num_tx_queues && qp < num_tx_queues;
2357 q++) {
2358 ring = &priv->tx_rings[q];
2359
2360 if (ring->inspect)
2361 continue;
2362
2363
2364
2365
2366 ring->switch_queue = qp;
2367 ring->switch_port = port;
2368 ring->inspect = true;
2369 priv->ring_map[qp + port * num_tx_queues] = ring;
2370 qp++;
2371 }
2372
2373 return 0;
2374}
2375
2376static int bcm_sysport_unmap_queues(struct net_device *dev,
2377 struct net_device *slave_dev)
2378{
2379 struct dsa_port *dp = dsa_port_from_netdev(slave_dev);
2380 struct bcm_sysport_priv *priv = netdev_priv(dev);
2381 struct bcm_sysport_tx_ring *ring;
2382 unsigned int num_tx_queues;
2383 unsigned int q, qp, port;
2384
2385 port = dp->index;
2386
2387 num_tx_queues = slave_dev->real_num_tx_queues;
2388
2389 for (q = 0; q < dev->num_tx_queues; q++) {
2390 ring = &priv->tx_rings[q];
2391
2392 if (ring->switch_port != port)
2393 continue;
2394
2395 if (!ring->inspect)
2396 continue;
2397
2398 ring->inspect = false;
2399 qp = ring->switch_queue;
2400 priv->ring_map[qp + port * num_tx_queues] = NULL;
2401 }
2402
2403 return 0;
2404}
2405
2406static int bcm_sysport_netdevice_event(struct notifier_block *nb,
2407 unsigned long event, void *ptr)
2408{
2409 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
2410 struct netdev_notifier_changeupper_info *info = ptr;
2411 struct bcm_sysport_priv *priv;
2412 int ret = 0;
2413
2414 priv = container_of(nb, struct bcm_sysport_priv, netdev_notifier);
2415 if (priv->netdev != dev)
2416 return NOTIFY_DONE;
2417
2418 switch (event) {
2419 case NETDEV_CHANGEUPPER:
2420 if (dev->netdev_ops != &bcm_sysport_netdev_ops)
2421 return NOTIFY_DONE;
2422
2423 if (!dsa_slave_dev_check(info->upper_dev))
2424 return NOTIFY_DONE;
2425
2426 if (info->linking)
2427 ret = bcm_sysport_map_queues(dev, info->upper_dev);
2428 else
2429 ret = bcm_sysport_unmap_queues(dev, info->upper_dev);
2430 break;
2431 }
2432
2433 return notifier_from_errno(ret);
2434}
2435
2436#define REV_FMT "v%2x.%02x"
2437
2438static const struct bcm_sysport_hw_params bcm_sysport_params[] = {
2439 [SYSTEMPORT] = {
2440 .is_lite = false,
2441 .num_rx_desc_words = SP_NUM_HW_RX_DESC_WORDS,
2442 },
2443 [SYSTEMPORT_LITE] = {
2444 .is_lite = true,
2445 .num_rx_desc_words = SP_LT_NUM_HW_RX_DESC_WORDS,
2446 },
2447};
2448
2449static const struct of_device_id bcm_sysport_of_match[] = {
2450 { .compatible = "brcm,systemportlite-v1.00",
2451 .data = &bcm_sysport_params[SYSTEMPORT_LITE] },
2452 { .compatible = "brcm,systemport-v1.00",
2453 .data = &bcm_sysport_params[SYSTEMPORT] },
2454 { .compatible = "brcm,systemport",
2455 .data = &bcm_sysport_params[SYSTEMPORT] },
2456 { }
2457};
2458MODULE_DEVICE_TABLE(of, bcm_sysport_of_match);
2459
2460static int bcm_sysport_probe(struct platform_device *pdev)
2461{
2462 const struct bcm_sysport_hw_params *params;
2463 const struct of_device_id *of_id = NULL;
2464 struct bcm_sysport_priv *priv;
2465 struct device_node *dn;
2466 struct net_device *dev;
2467 u32 txq, rxq;
2468 int ret;
2469
2470 dn = pdev->dev.of_node;
2471 of_id = of_match_node(bcm_sysport_of_match, dn);
2472 if (!of_id || !of_id->data)
2473 return -EINVAL;
2474
2475 ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(40));
2476 if (ret)
2477 ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
2478 if (ret) {
2479 dev_err(&pdev->dev, "unable to set DMA mask: %d\n", ret);
2480 return ret;
2481 }
2482
2483
2484 params = of_id->data;
2485
2486
2487 if (of_property_read_u32(dn, "systemport,num-txq", &txq))
2488 txq = TDMA_NUM_RINGS;
2489 if (of_property_read_u32(dn, "systemport,num-rxq", &rxq))
2490 rxq = 1;
2491
2492
2493 if (!txq || txq > TDMA_NUM_RINGS)
2494 return -EINVAL;
2495
2496 dev = alloc_etherdev_mqs(sizeof(*priv), txq, rxq);
2497 if (!dev)
2498 return -ENOMEM;
2499
2500
2501 priv = netdev_priv(dev);
2502
2503 priv->clk = devm_clk_get_optional(&pdev->dev, "sw_sysport");
2504 if (IS_ERR(priv->clk)) {
2505 ret = PTR_ERR(priv->clk);
2506 goto err_free_netdev;
2507 }
2508
2509
2510 priv->tx_rings = devm_kcalloc(&pdev->dev, txq,
2511 sizeof(struct bcm_sysport_tx_ring),
2512 GFP_KERNEL);
2513 if (!priv->tx_rings) {
2514 ret = -ENOMEM;
2515 goto err_free_netdev;
2516 }
2517
2518 priv->is_lite = params->is_lite;
2519 priv->num_rx_desc_words = params->num_rx_desc_words;
2520
2521 priv->irq0 = platform_get_irq(pdev, 0);
2522 if (!priv->is_lite) {
2523 priv->irq1 = platform_get_irq(pdev, 1);
2524 priv->wol_irq = platform_get_irq(pdev, 2);
2525 } else {
2526 priv->wol_irq = platform_get_irq(pdev, 1);
2527 }
2528 if (priv->irq0 <= 0 || (priv->irq1 <= 0 && !priv->is_lite)) {
2529 ret = -EINVAL;
2530 goto err_free_netdev;
2531 }
2532
2533 priv->base = devm_platform_ioremap_resource(pdev, 0);
2534 if (IS_ERR(priv->base)) {
2535 ret = PTR_ERR(priv->base);
2536 goto err_free_netdev;
2537 }
2538
2539 priv->netdev = dev;
2540 priv->pdev = pdev;
2541
2542 ret = of_get_phy_mode(dn, &priv->phy_interface);
2543
2544 if (ret)
2545 priv->phy_interface = PHY_INTERFACE_MODE_GMII;
2546
2547
2548
2549
2550 if (of_phy_is_fixed_link(dn)) {
2551 ret = of_phy_register_fixed_link(dn);
2552 if (ret) {
2553 dev_err(&pdev->dev, "failed to register fixed PHY\n");
2554 goto err_free_netdev;
2555 }
2556
2557 priv->phy_dn = dn;
2558 }
2559
2560
2561 ret = of_get_ethdev_address(dn, dev);
2562 if (ret) {
2563 dev_warn(&pdev->dev, "using random Ethernet MAC\n");
2564 eth_hw_addr_random(dev);
2565 }
2566
2567 SET_NETDEV_DEV(dev, &pdev->dev);
2568 dev_set_drvdata(&pdev->dev, dev);
2569 dev->ethtool_ops = &bcm_sysport_ethtool_ops;
2570 dev->netdev_ops = &bcm_sysport_netdev_ops;
2571 netif_napi_add(dev, &priv->napi, bcm_sysport_poll, 64);
2572
2573 dev->features |= NETIF_F_RXCSUM | NETIF_F_HIGHDMA |
2574 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
2575 NETIF_F_HW_VLAN_CTAG_TX;
2576 dev->hw_features |= dev->features;
2577 dev->vlan_features |= dev->features;
2578 dev->max_mtu = UMAC_MAX_MTU_SIZE;
2579
2580
2581 priv->wol_irq_disabled = 1;
2582 ret = devm_request_irq(&pdev->dev, priv->wol_irq,
2583 bcm_sysport_wol_isr, 0, dev->name, priv);
2584 if (!ret)
2585 device_set_wakeup_capable(&pdev->dev, 1);
2586
2587 priv->wol_clk = devm_clk_get_optional(&pdev->dev, "sw_sysportwol");
2588 if (IS_ERR(priv->wol_clk)) {
2589 ret = PTR_ERR(priv->wol_clk);
2590 goto err_deregister_fixed_link;
2591 }
2592
2593
2594 BUILD_BUG_ON(sizeof(struct bcm_tsb) != 8);
2595 dev->needed_headroom += sizeof(struct bcm_tsb);
2596
2597
2598 netif_carrier_off(dev);
2599
2600 priv->rx_max_coalesced_frames = 1;
2601 u64_stats_init(&priv->syncp);
2602
2603 priv->netdev_notifier.notifier_call = bcm_sysport_netdevice_event;
2604
2605 ret = register_netdevice_notifier(&priv->netdev_notifier);
2606 if (ret) {
2607 dev_err(&pdev->dev, "failed to register DSA notifier\n");
2608 goto err_deregister_fixed_link;
2609 }
2610
2611 ret = register_netdev(dev);
2612 if (ret) {
2613 dev_err(&pdev->dev, "failed to register net_device\n");
2614 goto err_deregister_notifier;
2615 }
2616
2617 clk_prepare_enable(priv->clk);
2618
2619 priv->rev = topctrl_readl(priv, REV_CNTL) & REV_MASK;
2620 dev_info(&pdev->dev,
2621 "Broadcom SYSTEMPORT%s " REV_FMT
2622 " (irqs: %d, %d, TXQs: %d, RXQs: %d)\n",
2623 priv->is_lite ? " Lite" : "",
2624 (priv->rev >> 8) & 0xff, priv->rev & 0xff,
2625 priv->irq0, priv->irq1, txq, rxq);
2626
2627 clk_disable_unprepare(priv->clk);
2628
2629 return 0;
2630
2631err_deregister_notifier:
2632 unregister_netdevice_notifier(&priv->netdev_notifier);
2633err_deregister_fixed_link:
2634 if (of_phy_is_fixed_link(dn))
2635 of_phy_deregister_fixed_link(dn);
2636err_free_netdev:
2637 free_netdev(dev);
2638 return ret;
2639}
2640
2641static int bcm_sysport_remove(struct platform_device *pdev)
2642{
2643 struct net_device *dev = dev_get_drvdata(&pdev->dev);
2644 struct bcm_sysport_priv *priv = netdev_priv(dev);
2645 struct device_node *dn = pdev->dev.of_node;
2646
2647
2648
2649
2650 unregister_netdevice_notifier(&priv->netdev_notifier);
2651 unregister_netdev(dev);
2652 if (of_phy_is_fixed_link(dn))
2653 of_phy_deregister_fixed_link(dn);
2654 free_netdev(dev);
2655 dev_set_drvdata(&pdev->dev, NULL);
2656
2657 return 0;
2658}
2659
2660static int bcm_sysport_suspend_to_wol(struct bcm_sysport_priv *priv)
2661{
2662 struct net_device *ndev = priv->netdev;
2663 unsigned int timeout = 1000;
2664 unsigned int index, i = 0;
2665 u32 reg;
2666
2667 reg = umac_readl(priv, UMAC_MPD_CTRL);
2668 if (priv->wolopts & (WAKE_MAGIC | WAKE_MAGICSECURE))
2669 reg |= MPD_EN;
2670 reg &= ~PSW_EN;
2671 if (priv->wolopts & WAKE_MAGICSECURE) {
2672
2673 umac_writel(priv, get_unaligned_be16(&priv->sopass[0]),
2674 UMAC_PSW_MS);
2675 umac_writel(priv, get_unaligned_be32(&priv->sopass[2]),
2676 UMAC_PSW_LS);
2677 reg |= PSW_EN;
2678 }
2679 umac_writel(priv, reg, UMAC_MPD_CTRL);
2680
2681 if (priv->wolopts & WAKE_FILTER) {
2682
2683 reg = rbuf_readl(priv, RBUF_CONTROL);
2684 if (priv->is_lite)
2685 reg |= RBUF_ACPI_EN_LITE;
2686 else
2687 reg |= RBUF_ACPI_EN;
2688 rbuf_writel(priv, reg, RBUF_CONTROL);
2689
2690
2691 reg = rxchk_readl(priv, RXCHK_CONTROL);
2692 reg &= ~(RXCHK_BRCM_TAG_MATCH_MASK <<
2693 RXCHK_BRCM_TAG_MATCH_SHIFT);
2694 for_each_set_bit(index, priv->filters, RXCHK_BRCM_TAG_MAX) {
2695 reg |= BIT(RXCHK_BRCM_TAG_MATCH_SHIFT + i);
2696 i++;
2697 }
2698 reg |= RXCHK_EN | RXCHK_BRCM_TAG_EN;
2699 rxchk_writel(priv, reg, RXCHK_CONTROL);
2700 }
2701
2702
2703 do {
2704 reg = rbuf_readl(priv, RBUF_STATUS);
2705 if (reg & RBUF_WOL_MODE)
2706 break;
2707
2708 udelay(10);
2709 } while (timeout-- > 0);
2710
2711
2712 if (!timeout) {
2713 mpd_enable_set(priv, false);
2714 netif_err(priv, wol, ndev, "failed to enter WOL mode\n");
2715 return -ETIMEDOUT;
2716 }
2717
2718
2719 umac_enable_set(priv, CMD_RX_EN, 1);
2720
2721 netif_dbg(priv, wol, ndev, "entered WOL mode\n");
2722
2723 return 0;
2724}
2725
2726static int __maybe_unused bcm_sysport_suspend(struct device *d)
2727{
2728 struct net_device *dev = dev_get_drvdata(d);
2729 struct bcm_sysport_priv *priv = netdev_priv(dev);
2730 unsigned int i;
2731 int ret = 0;
2732 u32 reg;
2733
2734 if (!netif_running(dev))
2735 return 0;
2736
2737 netif_device_detach(dev);
2738
2739 bcm_sysport_netif_stop(dev);
2740
2741 phy_suspend(dev->phydev);
2742
2743
2744 umac_enable_set(priv, CMD_RX_EN, 0);
2745
2746 ret = rdma_enable_set(priv, 0);
2747 if (ret) {
2748 netdev_err(dev, "RDMA timeout!\n");
2749 return ret;
2750 }
2751
2752
2753 if (priv->rx_chk_en) {
2754 reg = rxchk_readl(priv, RXCHK_CONTROL);
2755 reg &= ~RXCHK_EN;
2756 rxchk_writel(priv, reg, RXCHK_CONTROL);
2757 }
2758
2759
2760 if (!priv->wolopts)
2761 topctrl_writel(priv, RX_FLUSH, RX_FLUSH_CNTL);
2762
2763 ret = tdma_enable_set(priv, 0);
2764 if (ret) {
2765 netdev_err(dev, "TDMA timeout!\n");
2766 return ret;
2767 }
2768
2769
2770 usleep_range(2000, 3000);
2771
2772 umac_enable_set(priv, CMD_TX_EN, 0);
2773
2774 topctrl_writel(priv, TX_FLUSH, TX_FLUSH_CNTL);
2775
2776
2777 for (i = 0; i < dev->num_tx_queues; i++)
2778 bcm_sysport_fini_tx_ring(priv, i);
2779 bcm_sysport_fini_rx_ring(priv);
2780
2781
2782 if (device_may_wakeup(d) && priv->wolopts) {
2783 clk_prepare_enable(priv->wol_clk);
2784 ret = bcm_sysport_suspend_to_wol(priv);
2785 }
2786
2787 clk_disable_unprepare(priv->clk);
2788
2789 return ret;
2790}
2791
2792static int __maybe_unused bcm_sysport_resume(struct device *d)
2793{
2794 struct net_device *dev = dev_get_drvdata(d);
2795 struct bcm_sysport_priv *priv = netdev_priv(dev);
2796 unsigned int i;
2797 int ret;
2798
2799 if (!netif_running(dev))
2800 return 0;
2801
2802 clk_prepare_enable(priv->clk);
2803 if (priv->wolopts)
2804 clk_disable_unprepare(priv->wol_clk);
2805
2806 umac_reset(priv);
2807
2808
2809 umac_enable_set(priv, CMD_RX_EN | CMD_TX_EN, 0);
2810
2811
2812
2813
2814 bcm_sysport_resume_from_wol(priv);
2815
2816
2817 for (i = 0; i < dev->num_tx_queues; i++) {
2818 ret = bcm_sysport_init_tx_ring(priv, i);
2819 if (ret) {
2820 netdev_err(dev, "failed to initialize TX ring %d\n",
2821 i);
2822 goto out_free_tx_rings;
2823 }
2824 }
2825
2826
2827 tdma_writel(priv, TDMA_LL_RAM_INIT_BUSY, TDMA_STATUS);
2828
2829
2830 ret = bcm_sysport_init_rx_ring(priv);
2831 if (ret) {
2832 netdev_err(dev, "failed to initialize RX ring\n");
2833 goto out_free_rx_ring;
2834 }
2835
2836
2837 topctrl_writel(priv, 0, RX_FLUSH_CNTL);
2838
2839 ret = rdma_enable_set(priv, 1);
2840 if (ret) {
2841 netdev_err(dev, "failed to enable RDMA\n");
2842 goto out_free_rx_ring;
2843 }
2844
2845
2846 bcm_sysport_set_features(dev, dev->features);
2847
2848 rbuf_init(priv);
2849
2850
2851 if (!priv->is_lite)
2852 umac_writel(priv, UMAC_MAX_MTU_SIZE, UMAC_MAX_FRAME_LEN);
2853 else
2854 gib_set_pad_extension(priv);
2855
2856
2857 umac_set_hw_addr(priv, dev->dev_addr);
2858
2859 umac_enable_set(priv, CMD_RX_EN, 1);
2860
2861
2862 topctrl_writel(priv, 0, TX_FLUSH_CNTL);
2863
2864 umac_enable_set(priv, CMD_TX_EN, 1);
2865
2866 ret = tdma_enable_set(priv, 1);
2867 if (ret) {
2868 netdev_err(dev, "TDMA timeout!\n");
2869 goto out_free_rx_ring;
2870 }
2871
2872 phy_resume(dev->phydev);
2873
2874 bcm_sysport_netif_start(dev);
2875
2876 netif_device_attach(dev);
2877
2878 return 0;
2879
2880out_free_rx_ring:
2881 bcm_sysport_fini_rx_ring(priv);
2882out_free_tx_rings:
2883 for (i = 0; i < dev->num_tx_queues; i++)
2884 bcm_sysport_fini_tx_ring(priv, i);
2885 clk_disable_unprepare(priv->clk);
2886 return ret;
2887}
2888
2889static SIMPLE_DEV_PM_OPS(bcm_sysport_pm_ops,
2890 bcm_sysport_suspend, bcm_sysport_resume);
2891
2892static struct platform_driver bcm_sysport_driver = {
2893 .probe = bcm_sysport_probe,
2894 .remove = bcm_sysport_remove,
2895 .driver = {
2896 .name = "brcm-systemport",
2897 .of_match_table = bcm_sysport_of_match,
2898 .pm = &bcm_sysport_pm_ops,
2899 },
2900};
2901module_platform_driver(bcm_sysport_driver);
2902
2903MODULE_AUTHOR("Broadcom Corporation");
2904MODULE_DESCRIPTION("Broadcom System Port Ethernet MAC driver");
2905MODULE_ALIAS("platform:brcm-systemport");
2906MODULE_LICENSE("GPL");
2907