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25#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
26
27#include <linux/module.h>
28#include <linux/kernel.h>
29#include <linux/pci.h>
30#include <linux/pci-aspm.h>
31#include <linux/netdevice.h>
32#include <linux/etherdevice.h>
33#include <linux/ethtool.h>
34#include <linux/mii.h>
35#include <linux/crc32.h>
36#include <linux/delay.h>
37#include <linux/spinlock.h>
38#include <linux/in.h>
39#include <linux/ip.h>
40#include <linux/ipv6.h>
41#include <linux/tcp.h>
42#include <linux/udp.h>
43#include <linux/if_vlan.h>
44#include <linux/slab.h>
45#include <net/ip6_checksum.h>
46#include "jme.h"
47
48static int force_pseudohp = -1;
49static int no_pseudohp = -1;
50static int no_extplug = -1;
51module_param(force_pseudohp, int, 0);
52MODULE_PARM_DESC(force_pseudohp,
53 "Enable pseudo hot-plug feature manually by driver instead of BIOS.");
54module_param(no_pseudohp, int, 0);
55MODULE_PARM_DESC(no_pseudohp, "Disable pseudo hot-plug feature.");
56module_param(no_extplug, int, 0);
57MODULE_PARM_DESC(no_extplug,
58 "Do not use external plug signal for pseudo hot-plug.");
59
60static int
61jme_mdio_read(struct net_device *netdev, int phy, int reg)
62{
63 struct jme_adapter *jme = netdev_priv(netdev);
64 int i, val, again = (reg == MII_BMSR) ? 1 : 0;
65
66read_again:
67 jwrite32(jme, JME_SMI, SMI_OP_REQ |
68 smi_phy_addr(phy) |
69 smi_reg_addr(reg));
70
71 wmb();
72 for (i = JME_PHY_TIMEOUT * 50 ; i > 0 ; --i) {
73 udelay(20);
74 val = jread32(jme, JME_SMI);
75 if ((val & SMI_OP_REQ) == 0)
76 break;
77 }
78
79 if (i == 0) {
80 pr_err("phy(%d) read timeout : %d\n", phy, reg);
81 return 0;
82 }
83
84 if (again--)
85 goto read_again;
86
87 return (val & SMI_DATA_MASK) >> SMI_DATA_SHIFT;
88}
89
90static void
91jme_mdio_write(struct net_device *netdev,
92 int phy, int reg, int val)
93{
94 struct jme_adapter *jme = netdev_priv(netdev);
95 int i;
96
97 jwrite32(jme, JME_SMI, SMI_OP_WRITE | SMI_OP_REQ |
98 ((val << SMI_DATA_SHIFT) & SMI_DATA_MASK) |
99 smi_phy_addr(phy) | smi_reg_addr(reg));
100
101 wmb();
102 for (i = JME_PHY_TIMEOUT * 50 ; i > 0 ; --i) {
103 udelay(20);
104 if ((jread32(jme, JME_SMI) & SMI_OP_REQ) == 0)
105 break;
106 }
107
108 if (i == 0)
109 pr_err("phy(%d) write timeout : %d\n", phy, reg);
110}
111
112static inline void
113jme_reset_phy_processor(struct jme_adapter *jme)
114{
115 u32 val;
116
117 jme_mdio_write(jme->dev,
118 jme->mii_if.phy_id,
119 MII_ADVERTISE, ADVERTISE_ALL |
120 ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
121
122 if (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC250)
123 jme_mdio_write(jme->dev,
124 jme->mii_if.phy_id,
125 MII_CTRL1000,
126 ADVERTISE_1000FULL | ADVERTISE_1000HALF);
127
128 val = jme_mdio_read(jme->dev,
129 jme->mii_if.phy_id,
130 MII_BMCR);
131
132 jme_mdio_write(jme->dev,
133 jme->mii_if.phy_id,
134 MII_BMCR, val | BMCR_RESET);
135}
136
137static void
138jme_setup_wakeup_frame(struct jme_adapter *jme,
139 const u32 *mask, u32 crc, int fnr)
140{
141 int i;
142
143
144
145
146 jwrite32(jme, JME_WFOI, WFOI_CRC_SEL | (fnr & WFOI_FRAME_SEL));
147 wmb();
148 jwrite32(jme, JME_WFODP, crc);
149 wmb();
150
151
152
153
154 for (i = 0 ; i < WAKEUP_FRAME_MASK_DWNR ; ++i) {
155 jwrite32(jme, JME_WFOI,
156 ((i << WFOI_MASK_SHIFT) & WFOI_MASK_SEL) |
157 (fnr & WFOI_FRAME_SEL));
158 wmb();
159 jwrite32(jme, JME_WFODP, mask[i]);
160 wmb();
161 }
162}
163
164static inline void
165jme_mac_rxclk_off(struct jme_adapter *jme)
166{
167 jme->reg_gpreg1 |= GPREG1_RXCLKOFF;
168 jwrite32f(jme, JME_GPREG1, jme->reg_gpreg1);
169}
170
171static inline void
172jme_mac_rxclk_on(struct jme_adapter *jme)
173{
174 jme->reg_gpreg1 &= ~GPREG1_RXCLKOFF;
175 jwrite32f(jme, JME_GPREG1, jme->reg_gpreg1);
176}
177
178static inline void
179jme_mac_txclk_off(struct jme_adapter *jme)
180{
181 jme->reg_ghc &= ~(GHC_TO_CLK_SRC | GHC_TXMAC_CLK_SRC);
182 jwrite32f(jme, JME_GHC, jme->reg_ghc);
183}
184
185static inline void
186jme_mac_txclk_on(struct jme_adapter *jme)
187{
188 u32 speed = jme->reg_ghc & GHC_SPEED;
189 if (speed == GHC_SPEED_1000M)
190 jme->reg_ghc |= GHC_TO_CLK_GPHY | GHC_TXMAC_CLK_GPHY;
191 else
192 jme->reg_ghc |= GHC_TO_CLK_PCIE | GHC_TXMAC_CLK_PCIE;
193 jwrite32f(jme, JME_GHC, jme->reg_ghc);
194}
195
196static inline void
197jme_reset_ghc_speed(struct jme_adapter *jme)
198{
199 jme->reg_ghc &= ~(GHC_SPEED | GHC_DPX);
200 jwrite32f(jme, JME_GHC, jme->reg_ghc);
201}
202
203static inline void
204jme_reset_250A2_workaround(struct jme_adapter *jme)
205{
206 jme->reg_gpreg1 &= ~(GPREG1_HALFMODEPATCH |
207 GPREG1_RSSPATCH);
208 jwrite32(jme, JME_GPREG1, jme->reg_gpreg1);
209}
210
211static inline void
212jme_assert_ghc_reset(struct jme_adapter *jme)
213{
214 jme->reg_ghc |= GHC_SWRST;
215 jwrite32f(jme, JME_GHC, jme->reg_ghc);
216}
217
218static inline void
219jme_clear_ghc_reset(struct jme_adapter *jme)
220{
221 jme->reg_ghc &= ~GHC_SWRST;
222 jwrite32f(jme, JME_GHC, jme->reg_ghc);
223}
224
225static inline void
226jme_reset_mac_processor(struct jme_adapter *jme)
227{
228 static const u32 mask[WAKEUP_FRAME_MASK_DWNR] = {0, 0, 0, 0};
229 u32 crc = 0xCDCDCDCD;
230 u32 gpreg0;
231 int i;
232
233 jme_reset_ghc_speed(jme);
234 jme_reset_250A2_workaround(jme);
235
236 jme_mac_rxclk_on(jme);
237 jme_mac_txclk_on(jme);
238 udelay(1);
239 jme_assert_ghc_reset(jme);
240 udelay(1);
241 jme_mac_rxclk_off(jme);
242 jme_mac_txclk_off(jme);
243 udelay(1);
244 jme_clear_ghc_reset(jme);
245 udelay(1);
246 jme_mac_rxclk_on(jme);
247 jme_mac_txclk_on(jme);
248 udelay(1);
249 jme_mac_rxclk_off(jme);
250 jme_mac_txclk_off(jme);
251
252 jwrite32(jme, JME_RXDBA_LO, 0x00000000);
253 jwrite32(jme, JME_RXDBA_HI, 0x00000000);
254 jwrite32(jme, JME_RXQDC, 0x00000000);
255 jwrite32(jme, JME_RXNDA, 0x00000000);
256 jwrite32(jme, JME_TXDBA_LO, 0x00000000);
257 jwrite32(jme, JME_TXDBA_HI, 0x00000000);
258 jwrite32(jme, JME_TXQDC, 0x00000000);
259 jwrite32(jme, JME_TXNDA, 0x00000000);
260
261 jwrite32(jme, JME_RXMCHT_LO, 0x00000000);
262 jwrite32(jme, JME_RXMCHT_HI, 0x00000000);
263 for (i = 0 ; i < WAKEUP_FRAME_NR ; ++i)
264 jme_setup_wakeup_frame(jme, mask, crc, i);
265 if (jme->fpgaver)
266 gpreg0 = GPREG0_DEFAULT | GPREG0_LNKINTPOLL;
267 else
268 gpreg0 = GPREG0_DEFAULT;
269 jwrite32(jme, JME_GPREG0, gpreg0);
270}
271
272static inline void
273jme_clear_pm(struct jme_adapter *jme)
274{
275 jwrite32(jme, JME_PMCS, PMCS_STMASK | jme->reg_pmcs);
276}
277
278static int
279jme_reload_eeprom(struct jme_adapter *jme)
280{
281 u32 val;
282 int i;
283
284 val = jread32(jme, JME_SMBCSR);
285
286 if (val & SMBCSR_EEPROMD) {
287 val |= SMBCSR_CNACK;
288 jwrite32(jme, JME_SMBCSR, val);
289 val |= SMBCSR_RELOAD;
290 jwrite32(jme, JME_SMBCSR, val);
291 mdelay(12);
292
293 for (i = JME_EEPROM_RELOAD_TIMEOUT; i > 0; --i) {
294 mdelay(1);
295 if ((jread32(jme, JME_SMBCSR) & SMBCSR_RELOAD) == 0)
296 break;
297 }
298
299 if (i == 0) {
300 pr_err("eeprom reload timeout\n");
301 return -EIO;
302 }
303 }
304
305 return 0;
306}
307
308static void
309jme_load_macaddr(struct net_device *netdev)
310{
311 struct jme_adapter *jme = netdev_priv(netdev);
312 unsigned char macaddr[6];
313 u32 val;
314
315 spin_lock_bh(&jme->macaddr_lock);
316 val = jread32(jme, JME_RXUMA_LO);
317 macaddr[0] = (val >> 0) & 0xFF;
318 macaddr[1] = (val >> 8) & 0xFF;
319 macaddr[2] = (val >> 16) & 0xFF;
320 macaddr[3] = (val >> 24) & 0xFF;
321 val = jread32(jme, JME_RXUMA_HI);
322 macaddr[4] = (val >> 0) & 0xFF;
323 macaddr[5] = (val >> 8) & 0xFF;
324 memcpy(netdev->dev_addr, macaddr, 6);
325 spin_unlock_bh(&jme->macaddr_lock);
326}
327
328static inline void
329jme_set_rx_pcc(struct jme_adapter *jme, int p)
330{
331 switch (p) {
332 case PCC_OFF:
333 jwrite32(jme, JME_PCCRX0,
334 ((PCC_OFF_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
335 ((PCC_OFF_CNT << PCCRX_SHIFT) & PCCRX_MASK));
336 break;
337 case PCC_P1:
338 jwrite32(jme, JME_PCCRX0,
339 ((PCC_P1_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
340 ((PCC_P1_CNT << PCCRX_SHIFT) & PCCRX_MASK));
341 break;
342 case PCC_P2:
343 jwrite32(jme, JME_PCCRX0,
344 ((PCC_P2_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
345 ((PCC_P2_CNT << PCCRX_SHIFT) & PCCRX_MASK));
346 break;
347 case PCC_P3:
348 jwrite32(jme, JME_PCCRX0,
349 ((PCC_P3_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
350 ((PCC_P3_CNT << PCCRX_SHIFT) & PCCRX_MASK));
351 break;
352 default:
353 break;
354 }
355 wmb();
356
357 if (!(test_bit(JME_FLAG_POLL, &jme->flags)))
358 netif_info(jme, rx_status, jme->dev, "Switched to PCC_P%d\n", p);
359}
360
361static void
362jme_start_irq(struct jme_adapter *jme)
363{
364 register struct dynpcc_info *dpi = &(jme->dpi);
365
366 jme_set_rx_pcc(jme, PCC_P1);
367 dpi->cur = PCC_P1;
368 dpi->attempt = PCC_P1;
369 dpi->cnt = 0;
370
371 jwrite32(jme, JME_PCCTX,
372 ((PCC_TX_TO << PCCTXTO_SHIFT) & PCCTXTO_MASK) |
373 ((PCC_TX_CNT << PCCTX_SHIFT) & PCCTX_MASK) |
374 PCCTXQ0_EN
375 );
376
377
378
379
380 jwrite32(jme, JME_IENS, INTR_ENABLE);
381}
382
383static inline void
384jme_stop_irq(struct jme_adapter *jme)
385{
386
387
388
389 jwrite32f(jme, JME_IENC, INTR_ENABLE);
390}
391
392static u32
393jme_linkstat_from_phy(struct jme_adapter *jme)
394{
395 u32 phylink, bmsr;
396
397 phylink = jme_mdio_read(jme->dev, jme->mii_if.phy_id, 17);
398 bmsr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMSR);
399 if (bmsr & BMSR_ANCOMP)
400 phylink |= PHY_LINK_AUTONEG_COMPLETE;
401
402 return phylink;
403}
404
405static inline void
406jme_set_phyfifo_5level(struct jme_adapter *jme)
407{
408 jme_mdio_write(jme->dev, jme->mii_if.phy_id, 27, 0x0004);
409}
410
411static inline void
412jme_set_phyfifo_8level(struct jme_adapter *jme)
413{
414 jme_mdio_write(jme->dev, jme->mii_if.phy_id, 27, 0x0000);
415}
416
417static int
418jme_check_link(struct net_device *netdev, int testonly)
419{
420 struct jme_adapter *jme = netdev_priv(netdev);
421 u32 phylink, cnt = JME_SPDRSV_TIMEOUT, bmcr;
422 char linkmsg[64];
423 int rc = 0;
424
425 linkmsg[0] = '\0';
426
427 if (jme->fpgaver)
428 phylink = jme_linkstat_from_phy(jme);
429 else
430 phylink = jread32(jme, JME_PHY_LINK);
431
432 if (phylink & PHY_LINK_UP) {
433 if (!(phylink & PHY_LINK_AUTONEG_COMPLETE)) {
434
435
436
437
438 phylink = PHY_LINK_UP;
439
440 bmcr = jme_mdio_read(jme->dev,
441 jme->mii_if.phy_id,
442 MII_BMCR);
443
444 phylink |= ((bmcr & BMCR_SPEED1000) &&
445 (bmcr & BMCR_SPEED100) == 0) ?
446 PHY_LINK_SPEED_1000M :
447 (bmcr & BMCR_SPEED100) ?
448 PHY_LINK_SPEED_100M :
449 PHY_LINK_SPEED_10M;
450
451 phylink |= (bmcr & BMCR_FULLDPLX) ?
452 PHY_LINK_DUPLEX : 0;
453
454 strcat(linkmsg, "Forced: ");
455 } else {
456
457
458
459 while (!(phylink & PHY_LINK_SPEEDDPU_RESOLVED) &&
460 --cnt) {
461
462 udelay(1);
463
464 if (jme->fpgaver)
465 phylink = jme_linkstat_from_phy(jme);
466 else
467 phylink = jread32(jme, JME_PHY_LINK);
468 }
469 if (!cnt)
470 pr_err("Waiting speed resolve timeout\n");
471
472 strcat(linkmsg, "ANed: ");
473 }
474
475 if (jme->phylink == phylink) {
476 rc = 1;
477 goto out;
478 }
479 if (testonly)
480 goto out;
481
482 jme->phylink = phylink;
483
484
485
486
487
488 switch (phylink & PHY_LINK_SPEED_MASK) {
489 case PHY_LINK_SPEED_10M:
490 jme->reg_ghc |= GHC_SPEED_10M;
491 strcat(linkmsg, "10 Mbps, ");
492 break;
493 case PHY_LINK_SPEED_100M:
494 jme->reg_ghc |= GHC_SPEED_100M;
495 strcat(linkmsg, "100 Mbps, ");
496 break;
497 case PHY_LINK_SPEED_1000M:
498 jme->reg_ghc |= GHC_SPEED_1000M;
499 strcat(linkmsg, "1000 Mbps, ");
500 break;
501 default:
502 break;
503 }
504
505 if (phylink & PHY_LINK_DUPLEX) {
506 jwrite32(jme, JME_TXMCS, TXMCS_DEFAULT);
507 jwrite32(jme, JME_TXTRHD, TXTRHD_FULLDUPLEX);
508 jme->reg_ghc |= GHC_DPX;
509 } else {
510 jwrite32(jme, JME_TXMCS, TXMCS_DEFAULT |
511 TXMCS_BACKOFF |
512 TXMCS_CARRIERSENSE |
513 TXMCS_COLLISION);
514 jwrite32(jme, JME_TXTRHD, TXTRHD_HALFDUPLEX);
515 }
516
517 jwrite32(jme, JME_GHC, jme->reg_ghc);
518
519 if (is_buggy250(jme->pdev->device, jme->chiprev)) {
520 jme->reg_gpreg1 &= ~(GPREG1_HALFMODEPATCH |
521 GPREG1_RSSPATCH);
522 if (!(phylink & PHY_LINK_DUPLEX))
523 jme->reg_gpreg1 |= GPREG1_HALFMODEPATCH;
524 switch (phylink & PHY_LINK_SPEED_MASK) {
525 case PHY_LINK_SPEED_10M:
526 jme_set_phyfifo_8level(jme);
527 jme->reg_gpreg1 |= GPREG1_RSSPATCH;
528 break;
529 case PHY_LINK_SPEED_100M:
530 jme_set_phyfifo_5level(jme);
531 jme->reg_gpreg1 |= GPREG1_RSSPATCH;
532 break;
533 case PHY_LINK_SPEED_1000M:
534 jme_set_phyfifo_8level(jme);
535 break;
536 default:
537 break;
538 }
539 }
540 jwrite32(jme, JME_GPREG1, jme->reg_gpreg1);
541
542 strcat(linkmsg, (phylink & PHY_LINK_DUPLEX) ?
543 "Full-Duplex, " :
544 "Half-Duplex, ");
545 strcat(linkmsg, (phylink & PHY_LINK_MDI_STAT) ?
546 "MDI-X" :
547 "MDI");
548 netif_info(jme, link, jme->dev, "Link is up at %s\n", linkmsg);
549 netif_carrier_on(netdev);
550 } else {
551 if (testonly)
552 goto out;
553
554 netif_info(jme, link, jme->dev, "Link is down\n");
555 jme->phylink = 0;
556 netif_carrier_off(netdev);
557 }
558
559out:
560 return rc;
561}
562
563static int
564jme_setup_tx_resources(struct jme_adapter *jme)
565{
566 struct jme_ring *txring = &(jme->txring[0]);
567
568 txring->alloc = dma_alloc_coherent(&(jme->pdev->dev),
569 TX_RING_ALLOC_SIZE(jme->tx_ring_size),
570 &(txring->dmaalloc),
571 GFP_ATOMIC);
572
573 if (!txring->alloc)
574 goto err_set_null;
575
576
577
578
579 txring->desc = (void *)ALIGN((unsigned long)(txring->alloc),
580 RING_DESC_ALIGN);
581 txring->dma = ALIGN(txring->dmaalloc, RING_DESC_ALIGN);
582 txring->next_to_use = 0;
583 atomic_set(&txring->next_to_clean, 0);
584 atomic_set(&txring->nr_free, jme->tx_ring_size);
585
586 txring->bufinf = kmalloc(sizeof(struct jme_buffer_info) *
587 jme->tx_ring_size, GFP_ATOMIC);
588 if (unlikely(!(txring->bufinf)))
589 goto err_free_txring;
590
591
592
593
594 memset(txring->alloc, 0, TX_RING_ALLOC_SIZE(jme->tx_ring_size));
595 memset(txring->bufinf, 0,
596 sizeof(struct jme_buffer_info) * jme->tx_ring_size);
597
598 return 0;
599
600err_free_txring:
601 dma_free_coherent(&(jme->pdev->dev),
602 TX_RING_ALLOC_SIZE(jme->tx_ring_size),
603 txring->alloc,
604 txring->dmaalloc);
605
606err_set_null:
607 txring->desc = NULL;
608 txring->dmaalloc = 0;
609 txring->dma = 0;
610 txring->bufinf = NULL;
611
612 return -ENOMEM;
613}
614
615static void
616jme_free_tx_resources(struct jme_adapter *jme)
617{
618 int i;
619 struct jme_ring *txring = &(jme->txring[0]);
620 struct jme_buffer_info *txbi;
621
622 if (txring->alloc) {
623 if (txring->bufinf) {
624 for (i = 0 ; i < jme->tx_ring_size ; ++i) {
625 txbi = txring->bufinf + i;
626 if (txbi->skb) {
627 dev_kfree_skb(txbi->skb);
628 txbi->skb = NULL;
629 }
630 txbi->mapping = 0;
631 txbi->len = 0;
632 txbi->nr_desc = 0;
633 txbi->start_xmit = 0;
634 }
635 kfree(txring->bufinf);
636 }
637
638 dma_free_coherent(&(jme->pdev->dev),
639 TX_RING_ALLOC_SIZE(jme->tx_ring_size),
640 txring->alloc,
641 txring->dmaalloc);
642
643 txring->alloc = NULL;
644 txring->desc = NULL;
645 txring->dmaalloc = 0;
646 txring->dma = 0;
647 txring->bufinf = NULL;
648 }
649 txring->next_to_use = 0;
650 atomic_set(&txring->next_to_clean, 0);
651 atomic_set(&txring->nr_free, 0);
652}
653
654static inline void
655jme_enable_tx_engine(struct jme_adapter *jme)
656{
657
658
659
660 jwrite32(jme, JME_TXCS, TXCS_DEFAULT | TXCS_SELECT_QUEUE0);
661 wmb();
662
663
664
665
666 jwrite32(jme, JME_TXDBA_LO, (__u64)jme->txring[0].dma & 0xFFFFFFFFUL);
667 jwrite32(jme, JME_TXDBA_HI, (__u64)(jme->txring[0].dma) >> 32);
668 jwrite32(jme, JME_TXNDA, (__u64)jme->txring[0].dma & 0xFFFFFFFFUL);
669
670
671
672
673 jwrite32(jme, JME_TXQDC, jme->tx_ring_size);
674
675
676
677
678 wmb();
679 jwrite32f(jme, JME_TXCS, jme->reg_txcs |
680 TXCS_SELECT_QUEUE0 |
681 TXCS_ENABLE);
682
683
684
685
686 jme_mac_txclk_on(jme);
687}
688
689static inline void
690jme_restart_tx_engine(struct jme_adapter *jme)
691{
692
693
694
695 jwrite32(jme, JME_TXCS, jme->reg_txcs |
696 TXCS_SELECT_QUEUE0 |
697 TXCS_ENABLE);
698}
699
700static inline void
701jme_disable_tx_engine(struct jme_adapter *jme)
702{
703 int i;
704 u32 val;
705
706
707
708
709 jwrite32(jme, JME_TXCS, jme->reg_txcs | TXCS_SELECT_QUEUE0);
710 wmb();
711
712 val = jread32(jme, JME_TXCS);
713 for (i = JME_TX_DISABLE_TIMEOUT ; (val & TXCS_ENABLE) && i > 0 ; --i) {
714 mdelay(1);
715 val = jread32(jme, JME_TXCS);
716 rmb();
717 }
718
719 if (!i)
720 pr_err("Disable TX engine timeout\n");
721
722
723
724
725 jme_mac_txclk_off(jme);
726}
727
728static void
729jme_set_clean_rxdesc(struct jme_adapter *jme, int i)
730{
731 struct jme_ring *rxring = &(jme->rxring[0]);
732 register struct rxdesc *rxdesc = rxring->desc;
733 struct jme_buffer_info *rxbi = rxring->bufinf;
734 rxdesc += i;
735 rxbi += i;
736
737 rxdesc->dw[0] = 0;
738 rxdesc->dw[1] = 0;
739 rxdesc->desc1.bufaddrh = cpu_to_le32((__u64)rxbi->mapping >> 32);
740 rxdesc->desc1.bufaddrl = cpu_to_le32(
741 (__u64)rxbi->mapping & 0xFFFFFFFFUL);
742 rxdesc->desc1.datalen = cpu_to_le16(rxbi->len);
743 if (jme->dev->features & NETIF_F_HIGHDMA)
744 rxdesc->desc1.flags = RXFLAG_64BIT;
745 wmb();
746 rxdesc->desc1.flags |= RXFLAG_OWN | RXFLAG_INT;
747}
748
749static int
750jme_make_new_rx_buf(struct jme_adapter *jme, int i)
751{
752 struct jme_ring *rxring = &(jme->rxring[0]);
753 struct jme_buffer_info *rxbi = rxring->bufinf + i;
754 struct sk_buff *skb;
755 dma_addr_t mapping;
756
757 skb = netdev_alloc_skb(jme->dev,
758 jme->dev->mtu + RX_EXTRA_LEN);
759 if (unlikely(!skb))
760 return -ENOMEM;
761
762 mapping = pci_map_page(jme->pdev, virt_to_page(skb->data),
763 offset_in_page(skb->data), skb_tailroom(skb),
764 PCI_DMA_FROMDEVICE);
765 if (unlikely(pci_dma_mapping_error(jme->pdev, mapping))) {
766 dev_kfree_skb(skb);
767 return -ENOMEM;
768 }
769
770 if (likely(rxbi->mapping))
771 pci_unmap_page(jme->pdev, rxbi->mapping,
772 rxbi->len, PCI_DMA_FROMDEVICE);
773
774 rxbi->skb = skb;
775 rxbi->len = skb_tailroom(skb);
776 rxbi->mapping = mapping;
777 return 0;
778}
779
780static void
781jme_free_rx_buf(struct jme_adapter *jme, int i)
782{
783 struct jme_ring *rxring = &(jme->rxring[0]);
784 struct jme_buffer_info *rxbi = rxring->bufinf;
785 rxbi += i;
786
787 if (rxbi->skb) {
788 pci_unmap_page(jme->pdev,
789 rxbi->mapping,
790 rxbi->len,
791 PCI_DMA_FROMDEVICE);
792 dev_kfree_skb(rxbi->skb);
793 rxbi->skb = NULL;
794 rxbi->mapping = 0;
795 rxbi->len = 0;
796 }
797}
798
799static void
800jme_free_rx_resources(struct jme_adapter *jme)
801{
802 int i;
803 struct jme_ring *rxring = &(jme->rxring[0]);
804
805 if (rxring->alloc) {
806 if (rxring->bufinf) {
807 for (i = 0 ; i < jme->rx_ring_size ; ++i)
808 jme_free_rx_buf(jme, i);
809 kfree(rxring->bufinf);
810 }
811
812 dma_free_coherent(&(jme->pdev->dev),
813 RX_RING_ALLOC_SIZE(jme->rx_ring_size),
814 rxring->alloc,
815 rxring->dmaalloc);
816 rxring->alloc = NULL;
817 rxring->desc = NULL;
818 rxring->dmaalloc = 0;
819 rxring->dma = 0;
820 rxring->bufinf = NULL;
821 }
822 rxring->next_to_use = 0;
823 atomic_set(&rxring->next_to_clean, 0);
824}
825
826static int
827jme_setup_rx_resources(struct jme_adapter *jme)
828{
829 int i;
830 struct jme_ring *rxring = &(jme->rxring[0]);
831
832 rxring->alloc = dma_alloc_coherent(&(jme->pdev->dev),
833 RX_RING_ALLOC_SIZE(jme->rx_ring_size),
834 &(rxring->dmaalloc),
835 GFP_ATOMIC);
836 if (!rxring->alloc)
837 goto err_set_null;
838
839
840
841
842 rxring->desc = (void *)ALIGN((unsigned long)(rxring->alloc),
843 RING_DESC_ALIGN);
844 rxring->dma = ALIGN(rxring->dmaalloc, RING_DESC_ALIGN);
845 rxring->next_to_use = 0;
846 atomic_set(&rxring->next_to_clean, 0);
847
848 rxring->bufinf = kmalloc(sizeof(struct jme_buffer_info) *
849 jme->rx_ring_size, GFP_ATOMIC);
850 if (unlikely(!(rxring->bufinf)))
851 goto err_free_rxring;
852
853
854
855
856 memset(rxring->bufinf, 0,
857 sizeof(struct jme_buffer_info) * jme->rx_ring_size);
858 for (i = 0 ; i < jme->rx_ring_size ; ++i) {
859 if (unlikely(jme_make_new_rx_buf(jme, i))) {
860 jme_free_rx_resources(jme);
861 return -ENOMEM;
862 }
863
864 jme_set_clean_rxdesc(jme, i);
865 }
866
867 return 0;
868
869err_free_rxring:
870 dma_free_coherent(&(jme->pdev->dev),
871 RX_RING_ALLOC_SIZE(jme->rx_ring_size),
872 rxring->alloc,
873 rxring->dmaalloc);
874err_set_null:
875 rxring->desc = NULL;
876 rxring->dmaalloc = 0;
877 rxring->dma = 0;
878 rxring->bufinf = NULL;
879
880 return -ENOMEM;
881}
882
883static inline void
884jme_enable_rx_engine(struct jme_adapter *jme)
885{
886
887
888
889 jwrite32(jme, JME_RXCS, jme->reg_rxcs |
890 RXCS_QUEUESEL_Q0);
891 wmb();
892
893
894
895
896 jwrite32(jme, JME_RXDBA_LO, (__u64)(jme->rxring[0].dma) & 0xFFFFFFFFUL);
897 jwrite32(jme, JME_RXDBA_HI, (__u64)(jme->rxring[0].dma) >> 32);
898 jwrite32(jme, JME_RXNDA, (__u64)(jme->rxring[0].dma) & 0xFFFFFFFFUL);
899
900
901
902
903 jwrite32(jme, JME_RXQDC, jme->rx_ring_size);
904
905
906
907
908 jme_set_unicastaddr(jme->dev);
909 jme_set_multi(jme->dev);
910
911
912
913
914 wmb();
915 jwrite32f(jme, JME_RXCS, jme->reg_rxcs |
916 RXCS_QUEUESEL_Q0 |
917 RXCS_ENABLE |
918 RXCS_QST);
919
920
921
922
923 jme_mac_rxclk_on(jme);
924}
925
926static inline void
927jme_restart_rx_engine(struct jme_adapter *jme)
928{
929
930
931
932 jwrite32(jme, JME_RXCS, jme->reg_rxcs |
933 RXCS_QUEUESEL_Q0 |
934 RXCS_ENABLE |
935 RXCS_QST);
936}
937
938static inline void
939jme_disable_rx_engine(struct jme_adapter *jme)
940{
941 int i;
942 u32 val;
943
944
945
946
947 jwrite32(jme, JME_RXCS, jme->reg_rxcs);
948 wmb();
949
950 val = jread32(jme, JME_RXCS);
951 for (i = JME_RX_DISABLE_TIMEOUT ; (val & RXCS_ENABLE) && i > 0 ; --i) {
952 mdelay(1);
953 val = jread32(jme, JME_RXCS);
954 rmb();
955 }
956
957 if (!i)
958 pr_err("Disable RX engine timeout\n");
959
960
961
962
963 jme_mac_rxclk_off(jme);
964}
965
966static u16
967jme_udpsum(struct sk_buff *skb)
968{
969 u16 csum = 0xFFFFu;
970
971 if (skb->len < (ETH_HLEN + sizeof(struct iphdr)))
972 return csum;
973 if (skb->protocol != htons(ETH_P_IP))
974 return csum;
975 skb_set_network_header(skb, ETH_HLEN);
976 if ((ip_hdr(skb)->protocol != IPPROTO_UDP) ||
977 (skb->len < (ETH_HLEN +
978 (ip_hdr(skb)->ihl << 2) +
979 sizeof(struct udphdr)))) {
980 skb_reset_network_header(skb);
981 return csum;
982 }
983 skb_set_transport_header(skb,
984 ETH_HLEN + (ip_hdr(skb)->ihl << 2));
985 csum = udp_hdr(skb)->check;
986 skb_reset_transport_header(skb);
987 skb_reset_network_header(skb);
988
989 return csum;
990}
991
992static int
993jme_rxsum_ok(struct jme_adapter *jme, u16 flags, struct sk_buff *skb)
994{
995 if (!(flags & (RXWBFLAG_TCPON | RXWBFLAG_UDPON | RXWBFLAG_IPV4)))
996 return false;
997
998 if (unlikely((flags & (RXWBFLAG_MF | RXWBFLAG_TCPON | RXWBFLAG_TCPCS))
999 == RXWBFLAG_TCPON)) {
1000 if (flags & RXWBFLAG_IPV4)
1001 netif_err(jme, rx_err, jme->dev, "TCP Checksum error\n");
1002 return false;
1003 }
1004
1005 if (unlikely((flags & (RXWBFLAG_MF | RXWBFLAG_UDPON | RXWBFLAG_UDPCS))
1006 == RXWBFLAG_UDPON) && jme_udpsum(skb)) {
1007 if (flags & RXWBFLAG_IPV4)
1008 netif_err(jme, rx_err, jme->dev, "UDP Checksum error\n");
1009 return false;
1010 }
1011
1012 if (unlikely((flags & (RXWBFLAG_IPV4 | RXWBFLAG_IPCS))
1013 == RXWBFLAG_IPV4)) {
1014 netif_err(jme, rx_err, jme->dev, "IPv4 Checksum error\n");
1015 return false;
1016 }
1017
1018 return true;
1019}
1020
1021static void
1022jme_alloc_and_feed_skb(struct jme_adapter *jme, int idx)
1023{
1024 struct jme_ring *rxring = &(jme->rxring[0]);
1025 struct rxdesc *rxdesc = rxring->desc;
1026 struct jme_buffer_info *rxbi = rxring->bufinf;
1027 struct sk_buff *skb;
1028 int framesize;
1029
1030 rxdesc += idx;
1031 rxbi += idx;
1032
1033 skb = rxbi->skb;
1034 pci_dma_sync_single_for_cpu(jme->pdev,
1035 rxbi->mapping,
1036 rxbi->len,
1037 PCI_DMA_FROMDEVICE);
1038
1039 if (unlikely(jme_make_new_rx_buf(jme, idx))) {
1040 pci_dma_sync_single_for_device(jme->pdev,
1041 rxbi->mapping,
1042 rxbi->len,
1043 PCI_DMA_FROMDEVICE);
1044
1045 ++(NET_STAT(jme).rx_dropped);
1046 } else {
1047 framesize = le16_to_cpu(rxdesc->descwb.framesize)
1048 - RX_PREPAD_SIZE;
1049
1050 skb_reserve(skb, RX_PREPAD_SIZE);
1051 skb_put(skb, framesize);
1052 skb->protocol = eth_type_trans(skb, jme->dev);
1053
1054 if (jme_rxsum_ok(jme, le16_to_cpu(rxdesc->descwb.flags), skb))
1055 skb->ip_summed = CHECKSUM_UNNECESSARY;
1056 else
1057 skb_checksum_none_assert(skb);
1058
1059 if (rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_TAGON)) {
1060 u16 vid = le16_to_cpu(rxdesc->descwb.vlan);
1061
1062 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
1063 NET_STAT(jme).rx_bytes += 4;
1064 }
1065 jme->jme_rx(skb);
1066
1067 if ((rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_DEST)) ==
1068 cpu_to_le16(RXWBFLAG_DEST_MUL))
1069 ++(NET_STAT(jme).multicast);
1070
1071 NET_STAT(jme).rx_bytes += framesize;
1072 ++(NET_STAT(jme).rx_packets);
1073 }
1074
1075 jme_set_clean_rxdesc(jme, idx);
1076
1077}
1078
1079static int
1080jme_process_receive(struct jme_adapter *jme, int limit)
1081{
1082 struct jme_ring *rxring = &(jme->rxring[0]);
1083 struct rxdesc *rxdesc = rxring->desc;
1084 int i, j, ccnt, desccnt, mask = jme->rx_ring_mask;
1085
1086 if (unlikely(!atomic_dec_and_test(&jme->rx_cleaning)))
1087 goto out_inc;
1088
1089 if (unlikely(atomic_read(&jme->link_changing) != 1))
1090 goto out_inc;
1091
1092 if (unlikely(!netif_carrier_ok(jme->dev)))
1093 goto out_inc;
1094
1095 i = atomic_read(&rxring->next_to_clean);
1096 while (limit > 0) {
1097 rxdesc = rxring->desc;
1098 rxdesc += i;
1099
1100 if ((rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_OWN)) ||
1101 !(rxdesc->descwb.desccnt & RXWBDCNT_WBCPL))
1102 goto out;
1103 --limit;
1104
1105 rmb();
1106 desccnt = rxdesc->descwb.desccnt & RXWBDCNT_DCNT;
1107
1108 if (unlikely(desccnt > 1 ||
1109 rxdesc->descwb.errstat & RXWBERR_ALLERR)) {
1110
1111 if (rxdesc->descwb.errstat & RXWBERR_CRCERR)
1112 ++(NET_STAT(jme).rx_crc_errors);
1113 else if (rxdesc->descwb.errstat & RXWBERR_OVERUN)
1114 ++(NET_STAT(jme).rx_fifo_errors);
1115 else
1116 ++(NET_STAT(jme).rx_errors);
1117
1118 if (desccnt > 1)
1119 limit -= desccnt - 1;
1120
1121 for (j = i, ccnt = desccnt ; ccnt-- ; ) {
1122 jme_set_clean_rxdesc(jme, j);
1123 j = (j + 1) & (mask);
1124 }
1125
1126 } else {
1127 jme_alloc_and_feed_skb(jme, i);
1128 }
1129
1130 i = (i + desccnt) & (mask);
1131 }
1132
1133out:
1134 atomic_set(&rxring->next_to_clean, i);
1135
1136out_inc:
1137 atomic_inc(&jme->rx_cleaning);
1138
1139 return limit > 0 ? limit : 0;
1140
1141}
1142
1143static void
1144jme_attempt_pcc(struct dynpcc_info *dpi, int atmp)
1145{
1146 if (likely(atmp == dpi->cur)) {
1147 dpi->cnt = 0;
1148 return;
1149 }
1150
1151 if (dpi->attempt == atmp) {
1152 ++(dpi->cnt);
1153 } else {
1154 dpi->attempt = atmp;
1155 dpi->cnt = 0;
1156 }
1157
1158}
1159
1160static void
1161jme_dynamic_pcc(struct jme_adapter *jme)
1162{
1163 register struct dynpcc_info *dpi = &(jme->dpi);
1164
1165 if ((NET_STAT(jme).rx_bytes - dpi->last_bytes) > PCC_P3_THRESHOLD)
1166 jme_attempt_pcc(dpi, PCC_P3);
1167 else if ((NET_STAT(jme).rx_packets - dpi->last_pkts) > PCC_P2_THRESHOLD ||
1168 dpi->intr_cnt > PCC_INTR_THRESHOLD)
1169 jme_attempt_pcc(dpi, PCC_P2);
1170 else
1171 jme_attempt_pcc(dpi, PCC_P1);
1172
1173 if (unlikely(dpi->attempt != dpi->cur && dpi->cnt > 5)) {
1174 if (dpi->attempt < dpi->cur)
1175 tasklet_schedule(&jme->rxclean_task);
1176 jme_set_rx_pcc(jme, dpi->attempt);
1177 dpi->cur = dpi->attempt;
1178 dpi->cnt = 0;
1179 }
1180}
1181
1182static void
1183jme_start_pcc_timer(struct jme_adapter *jme)
1184{
1185 struct dynpcc_info *dpi = &(jme->dpi);
1186 dpi->last_bytes = NET_STAT(jme).rx_bytes;
1187 dpi->last_pkts = NET_STAT(jme).rx_packets;
1188 dpi->intr_cnt = 0;
1189 jwrite32(jme, JME_TMCSR,
1190 TMCSR_EN | ((0xFFFFFF - PCC_INTERVAL_US) & TMCSR_CNT));
1191}
1192
1193static inline void
1194jme_stop_pcc_timer(struct jme_adapter *jme)
1195{
1196 jwrite32(jme, JME_TMCSR, 0);
1197}
1198
1199static void
1200jme_shutdown_nic(struct jme_adapter *jme)
1201{
1202 u32 phylink;
1203
1204 phylink = jme_linkstat_from_phy(jme);
1205
1206 if (!(phylink & PHY_LINK_UP)) {
1207
1208
1209
1210 jme_stop_irq(jme);
1211 jwrite32(jme, JME_TIMER2, TMCSR_EN | 0xFFFFFE);
1212 }
1213}
1214
1215static void
1216jme_pcc_tasklet(unsigned long arg)
1217{
1218 struct jme_adapter *jme = (struct jme_adapter *)arg;
1219 struct net_device *netdev = jme->dev;
1220
1221 if (unlikely(test_bit(JME_FLAG_SHUTDOWN, &jme->flags))) {
1222 jme_shutdown_nic(jme);
1223 return;
1224 }
1225
1226 if (unlikely(!netif_carrier_ok(netdev) ||
1227 (atomic_read(&jme->link_changing) != 1)
1228 )) {
1229 jme_stop_pcc_timer(jme);
1230 return;
1231 }
1232
1233 if (!(test_bit(JME_FLAG_POLL, &jme->flags)))
1234 jme_dynamic_pcc(jme);
1235
1236 jme_start_pcc_timer(jme);
1237}
1238
1239static inline void
1240jme_polling_mode(struct jme_adapter *jme)
1241{
1242 jme_set_rx_pcc(jme, PCC_OFF);
1243}
1244
1245static inline void
1246jme_interrupt_mode(struct jme_adapter *jme)
1247{
1248 jme_set_rx_pcc(jme, PCC_P1);
1249}
1250
1251static inline int
1252jme_pseudo_hotplug_enabled(struct jme_adapter *jme)
1253{
1254 u32 apmc;
1255 apmc = jread32(jme, JME_APMC);
1256 return apmc & JME_APMC_PSEUDO_HP_EN;
1257}
1258
1259static void
1260jme_start_shutdown_timer(struct jme_adapter *jme)
1261{
1262 u32 apmc;
1263
1264 apmc = jread32(jme, JME_APMC) | JME_APMC_PCIE_SD_EN;
1265 apmc &= ~JME_APMC_EPIEN_CTRL;
1266 if (!no_extplug) {
1267 jwrite32f(jme, JME_APMC, apmc | JME_APMC_EPIEN_CTRL_EN);
1268 wmb();
1269 }
1270 jwrite32f(jme, JME_APMC, apmc);
1271
1272 jwrite32f(jme, JME_TIMER2, 0);
1273 set_bit(JME_FLAG_SHUTDOWN, &jme->flags);
1274 jwrite32(jme, JME_TMCSR,
1275 TMCSR_EN | ((0xFFFFFF - APMC_PHP_SHUTDOWN_DELAY) & TMCSR_CNT));
1276}
1277
1278static void
1279jme_stop_shutdown_timer(struct jme_adapter *jme)
1280{
1281 u32 apmc;
1282
1283 jwrite32f(jme, JME_TMCSR, 0);
1284 jwrite32f(jme, JME_TIMER2, 0);
1285 clear_bit(JME_FLAG_SHUTDOWN, &jme->flags);
1286
1287 apmc = jread32(jme, JME_APMC);
1288 apmc &= ~(JME_APMC_PCIE_SD_EN | JME_APMC_EPIEN_CTRL);
1289 jwrite32f(jme, JME_APMC, apmc | JME_APMC_EPIEN_CTRL_DIS);
1290 wmb();
1291 jwrite32f(jme, JME_APMC, apmc);
1292}
1293
1294static void
1295jme_link_change_tasklet(unsigned long arg)
1296{
1297 struct jme_adapter *jme = (struct jme_adapter *)arg;
1298 struct net_device *netdev = jme->dev;
1299 int rc;
1300
1301 while (!atomic_dec_and_test(&jme->link_changing)) {
1302 atomic_inc(&jme->link_changing);
1303 netif_info(jme, intr, jme->dev, "Get link change lock failed\n");
1304 while (atomic_read(&jme->link_changing) != 1)
1305 netif_info(jme, intr, jme->dev, "Waiting link change lock\n");
1306 }
1307
1308 if (jme_check_link(netdev, 1) && jme->old_mtu == netdev->mtu)
1309 goto out;
1310
1311 jme->old_mtu = netdev->mtu;
1312 netif_stop_queue(netdev);
1313 if (jme_pseudo_hotplug_enabled(jme))
1314 jme_stop_shutdown_timer(jme);
1315
1316 jme_stop_pcc_timer(jme);
1317 tasklet_disable(&jme->txclean_task);
1318 tasklet_disable(&jme->rxclean_task);
1319 tasklet_disable(&jme->rxempty_task);
1320
1321 if (netif_carrier_ok(netdev)) {
1322 jme_disable_rx_engine(jme);
1323 jme_disable_tx_engine(jme);
1324 jme_reset_mac_processor(jme);
1325 jme_free_rx_resources(jme);
1326 jme_free_tx_resources(jme);
1327
1328 if (test_bit(JME_FLAG_POLL, &jme->flags))
1329 jme_polling_mode(jme);
1330
1331 netif_carrier_off(netdev);
1332 }
1333
1334 jme_check_link(netdev, 0);
1335 if (netif_carrier_ok(netdev)) {
1336 rc = jme_setup_rx_resources(jme);
1337 if (rc) {
1338 pr_err("Allocating resources for RX error, Device STOPPED!\n");
1339 goto out_enable_tasklet;
1340 }
1341
1342 rc = jme_setup_tx_resources(jme);
1343 if (rc) {
1344 pr_err("Allocating resources for TX error, Device STOPPED!\n");
1345 goto err_out_free_rx_resources;
1346 }
1347
1348 jme_enable_rx_engine(jme);
1349 jme_enable_tx_engine(jme);
1350
1351 netif_start_queue(netdev);
1352
1353 if (test_bit(JME_FLAG_POLL, &jme->flags))
1354 jme_interrupt_mode(jme);
1355
1356 jme_start_pcc_timer(jme);
1357 } else if (jme_pseudo_hotplug_enabled(jme)) {
1358 jme_start_shutdown_timer(jme);
1359 }
1360
1361 goto out_enable_tasklet;
1362
1363err_out_free_rx_resources:
1364 jme_free_rx_resources(jme);
1365out_enable_tasklet:
1366 tasklet_enable(&jme->txclean_task);
1367 tasklet_hi_enable(&jme->rxclean_task);
1368 tasklet_hi_enable(&jme->rxempty_task);
1369out:
1370 atomic_inc(&jme->link_changing);
1371}
1372
1373static void
1374jme_rx_clean_tasklet(unsigned long arg)
1375{
1376 struct jme_adapter *jme = (struct jme_adapter *)arg;
1377 struct dynpcc_info *dpi = &(jme->dpi);
1378
1379 jme_process_receive(jme, jme->rx_ring_size);
1380 ++(dpi->intr_cnt);
1381
1382}
1383
1384static int
1385jme_poll(JME_NAPI_HOLDER(holder), JME_NAPI_WEIGHT(budget))
1386{
1387 struct jme_adapter *jme = jme_napi_priv(holder);
1388 int rest;
1389
1390 rest = jme_process_receive(jme, JME_NAPI_WEIGHT_VAL(budget));
1391
1392 while (atomic_read(&jme->rx_empty) > 0) {
1393 atomic_dec(&jme->rx_empty);
1394 ++(NET_STAT(jme).rx_dropped);
1395 jme_restart_rx_engine(jme);
1396 }
1397 atomic_inc(&jme->rx_empty);
1398
1399 if (rest) {
1400 JME_RX_COMPLETE(netdev, holder);
1401 jme_interrupt_mode(jme);
1402 }
1403
1404 JME_NAPI_WEIGHT_SET(budget, rest);
1405 return JME_NAPI_WEIGHT_VAL(budget) - rest;
1406}
1407
1408static void
1409jme_rx_empty_tasklet(unsigned long arg)
1410{
1411 struct jme_adapter *jme = (struct jme_adapter *)arg;
1412
1413 if (unlikely(atomic_read(&jme->link_changing) != 1))
1414 return;
1415
1416 if (unlikely(!netif_carrier_ok(jme->dev)))
1417 return;
1418
1419 netif_info(jme, rx_status, jme->dev, "RX Queue Full!\n");
1420
1421 jme_rx_clean_tasklet(arg);
1422
1423 while (atomic_read(&jme->rx_empty) > 0) {
1424 atomic_dec(&jme->rx_empty);
1425 ++(NET_STAT(jme).rx_dropped);
1426 jme_restart_rx_engine(jme);
1427 }
1428 atomic_inc(&jme->rx_empty);
1429}
1430
1431static void
1432jme_wake_queue_if_stopped(struct jme_adapter *jme)
1433{
1434 struct jme_ring *txring = &(jme->txring[0]);
1435
1436 smp_wmb();
1437 if (unlikely(netif_queue_stopped(jme->dev) &&
1438 atomic_read(&txring->nr_free) >= (jme->tx_wake_threshold))) {
1439 netif_info(jme, tx_done, jme->dev, "TX Queue Waked\n");
1440 netif_wake_queue(jme->dev);
1441 }
1442
1443}
1444
1445static void
1446jme_tx_clean_tasklet(unsigned long arg)
1447{
1448 struct jme_adapter *jme = (struct jme_adapter *)arg;
1449 struct jme_ring *txring = &(jme->txring[0]);
1450 struct txdesc *txdesc = txring->desc;
1451 struct jme_buffer_info *txbi = txring->bufinf, *ctxbi, *ttxbi;
1452 int i, j, cnt = 0, max, err, mask;
1453
1454 tx_dbg(jme, "Into txclean\n");
1455
1456 if (unlikely(!atomic_dec_and_test(&jme->tx_cleaning)))
1457 goto out;
1458
1459 if (unlikely(atomic_read(&jme->link_changing) != 1))
1460 goto out;
1461
1462 if (unlikely(!netif_carrier_ok(jme->dev)))
1463 goto out;
1464
1465 max = jme->tx_ring_size - atomic_read(&txring->nr_free);
1466 mask = jme->tx_ring_mask;
1467
1468 for (i = atomic_read(&txring->next_to_clean) ; cnt < max ; ) {
1469
1470 ctxbi = txbi + i;
1471
1472 if (likely(ctxbi->skb &&
1473 !(txdesc[i].descwb.flags & TXWBFLAG_OWN))) {
1474
1475 tx_dbg(jme, "txclean: %d+%d@%lu\n",
1476 i, ctxbi->nr_desc, jiffies);
1477
1478 err = txdesc[i].descwb.flags & TXWBFLAG_ALLERR;
1479
1480 for (j = 1 ; j < ctxbi->nr_desc ; ++j) {
1481 ttxbi = txbi + ((i + j) & (mask));
1482 txdesc[(i + j) & (mask)].dw[0] = 0;
1483
1484 pci_unmap_page(jme->pdev,
1485 ttxbi->mapping,
1486 ttxbi->len,
1487 PCI_DMA_TODEVICE);
1488
1489 ttxbi->mapping = 0;
1490 ttxbi->len = 0;
1491 }
1492
1493 dev_kfree_skb(ctxbi->skb);
1494
1495 cnt += ctxbi->nr_desc;
1496
1497 if (unlikely(err)) {
1498 ++(NET_STAT(jme).tx_carrier_errors);
1499 } else {
1500 ++(NET_STAT(jme).tx_packets);
1501 NET_STAT(jme).tx_bytes += ctxbi->len;
1502 }
1503
1504 ctxbi->skb = NULL;
1505 ctxbi->len = 0;
1506 ctxbi->start_xmit = 0;
1507
1508 } else {
1509 break;
1510 }
1511
1512 i = (i + ctxbi->nr_desc) & mask;
1513
1514 ctxbi->nr_desc = 0;
1515 }
1516
1517 tx_dbg(jme, "txclean: done %d@%lu\n", i, jiffies);
1518 atomic_set(&txring->next_to_clean, i);
1519 atomic_add(cnt, &txring->nr_free);
1520
1521 jme_wake_queue_if_stopped(jme);
1522
1523out:
1524 atomic_inc(&jme->tx_cleaning);
1525}
1526
1527static void
1528jme_intr_msi(struct jme_adapter *jme, u32 intrstat)
1529{
1530
1531
1532
1533 jwrite32f(jme, JME_IENC, INTR_ENABLE);
1534
1535 if (intrstat & (INTR_LINKCH | INTR_SWINTR)) {
1536
1537
1538
1539
1540 jwrite32(jme, JME_IEVE, intrstat);
1541 tasklet_schedule(&jme->linkch_task);
1542 goto out_reenable;
1543 }
1544
1545 if (intrstat & INTR_TMINTR) {
1546 jwrite32(jme, JME_IEVE, INTR_TMINTR);
1547 tasklet_schedule(&jme->pcc_task);
1548 }
1549
1550 if (intrstat & (INTR_PCCTXTO | INTR_PCCTX)) {
1551 jwrite32(jme, JME_IEVE, INTR_PCCTXTO | INTR_PCCTX | INTR_TX0);
1552 tasklet_schedule(&jme->txclean_task);
1553 }
1554
1555 if ((intrstat & (INTR_PCCRX0TO | INTR_PCCRX0 | INTR_RX0EMP))) {
1556 jwrite32(jme, JME_IEVE, (intrstat & (INTR_PCCRX0TO |
1557 INTR_PCCRX0 |
1558 INTR_RX0EMP)) |
1559 INTR_RX0);
1560 }
1561
1562 if (test_bit(JME_FLAG_POLL, &jme->flags)) {
1563 if (intrstat & INTR_RX0EMP)
1564 atomic_inc(&jme->rx_empty);
1565
1566 if ((intrstat & (INTR_PCCRX0TO | INTR_PCCRX0 | INTR_RX0EMP))) {
1567 if (likely(JME_RX_SCHEDULE_PREP(jme))) {
1568 jme_polling_mode(jme);
1569 JME_RX_SCHEDULE(jme);
1570 }
1571 }
1572 } else {
1573 if (intrstat & INTR_RX0EMP) {
1574 atomic_inc(&jme->rx_empty);
1575 tasklet_hi_schedule(&jme->rxempty_task);
1576 } else if (intrstat & (INTR_PCCRX0TO | INTR_PCCRX0)) {
1577 tasklet_hi_schedule(&jme->rxclean_task);
1578 }
1579 }
1580
1581out_reenable:
1582
1583
1584
1585 jwrite32f(jme, JME_IENS, INTR_ENABLE);
1586}
1587
1588static irqreturn_t
1589jme_intr(int irq, void *dev_id)
1590{
1591 struct net_device *netdev = dev_id;
1592 struct jme_adapter *jme = netdev_priv(netdev);
1593 u32 intrstat;
1594
1595 intrstat = jread32(jme, JME_IEVE);
1596
1597
1598
1599
1600 if (unlikely((intrstat & INTR_ENABLE) == 0))
1601 return IRQ_NONE;
1602
1603
1604
1605
1606 if (unlikely(intrstat == ~((typeof(intrstat))0)))
1607 return IRQ_NONE;
1608
1609 jme_intr_msi(jme, intrstat);
1610
1611 return IRQ_HANDLED;
1612}
1613
1614static irqreturn_t
1615jme_msi(int irq, void *dev_id)
1616{
1617 struct net_device *netdev = dev_id;
1618 struct jme_adapter *jme = netdev_priv(netdev);
1619 u32 intrstat;
1620
1621 intrstat = jread32(jme, JME_IEVE);
1622
1623 jme_intr_msi(jme, intrstat);
1624
1625 return IRQ_HANDLED;
1626}
1627
1628static void
1629jme_reset_link(struct jme_adapter *jme)
1630{
1631 jwrite32(jme, JME_TMCSR, TMCSR_SWIT);
1632}
1633
1634static void
1635jme_restart_an(struct jme_adapter *jme)
1636{
1637 u32 bmcr;
1638
1639 spin_lock_bh(&jme->phy_lock);
1640 bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1641 bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
1642 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr);
1643 spin_unlock_bh(&jme->phy_lock);
1644}
1645
1646static int
1647jme_request_irq(struct jme_adapter *jme)
1648{
1649 int rc;
1650 struct net_device *netdev = jme->dev;
1651 irq_handler_t handler = jme_intr;
1652 int irq_flags = IRQF_SHARED;
1653
1654 if (!pci_enable_msi(jme->pdev)) {
1655 set_bit(JME_FLAG_MSI, &jme->flags);
1656 handler = jme_msi;
1657 irq_flags = 0;
1658 }
1659
1660 rc = request_irq(jme->pdev->irq, handler, irq_flags, netdev->name,
1661 netdev);
1662 if (rc) {
1663 netdev_err(netdev,
1664 "Unable to request %s interrupt (return: %d)\n",
1665 test_bit(JME_FLAG_MSI, &jme->flags) ? "MSI" : "INTx",
1666 rc);
1667
1668 if (test_bit(JME_FLAG_MSI, &jme->flags)) {
1669 pci_disable_msi(jme->pdev);
1670 clear_bit(JME_FLAG_MSI, &jme->flags);
1671 }
1672 } else {
1673 netdev->irq = jme->pdev->irq;
1674 }
1675
1676 return rc;
1677}
1678
1679static void
1680jme_free_irq(struct jme_adapter *jme)
1681{
1682 free_irq(jme->pdev->irq, jme->dev);
1683 if (test_bit(JME_FLAG_MSI, &jme->flags)) {
1684 pci_disable_msi(jme->pdev);
1685 clear_bit(JME_FLAG_MSI, &jme->flags);
1686 jme->dev->irq = jme->pdev->irq;
1687 }
1688}
1689
1690static inline void
1691jme_new_phy_on(struct jme_adapter *jme)
1692{
1693 u32 reg;
1694
1695 reg = jread32(jme, JME_PHY_PWR);
1696 reg &= ~(PHY_PWR_DWN1SEL | PHY_PWR_DWN1SW |
1697 PHY_PWR_DWN2 | PHY_PWR_CLKSEL);
1698 jwrite32(jme, JME_PHY_PWR, reg);
1699
1700 pci_read_config_dword(jme->pdev, PCI_PRIV_PE1, ®);
1701 reg &= ~PE1_GPREG0_PBG;
1702 reg |= PE1_GPREG0_ENBG;
1703 pci_write_config_dword(jme->pdev, PCI_PRIV_PE1, reg);
1704}
1705
1706static inline void
1707jme_new_phy_off(struct jme_adapter *jme)
1708{
1709 u32 reg;
1710
1711 reg = jread32(jme, JME_PHY_PWR);
1712 reg |= PHY_PWR_DWN1SEL | PHY_PWR_DWN1SW |
1713 PHY_PWR_DWN2 | PHY_PWR_CLKSEL;
1714 jwrite32(jme, JME_PHY_PWR, reg);
1715
1716 pci_read_config_dword(jme->pdev, PCI_PRIV_PE1, ®);
1717 reg &= ~PE1_GPREG0_PBG;
1718 reg |= PE1_GPREG0_PDD3COLD;
1719 pci_write_config_dword(jme->pdev, PCI_PRIV_PE1, reg);
1720}
1721
1722static inline void
1723jme_phy_on(struct jme_adapter *jme)
1724{
1725 u32 bmcr;
1726
1727 bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1728 bmcr &= ~BMCR_PDOWN;
1729 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr);
1730
1731 if (new_phy_power_ctrl(jme->chip_main_rev))
1732 jme_new_phy_on(jme);
1733}
1734
1735static inline void
1736jme_phy_off(struct jme_adapter *jme)
1737{
1738 u32 bmcr;
1739
1740 bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1741 bmcr |= BMCR_PDOWN;
1742 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr);
1743
1744 if (new_phy_power_ctrl(jme->chip_main_rev))
1745 jme_new_phy_off(jme);
1746}
1747
1748static int
1749jme_phy_specreg_read(struct jme_adapter *jme, u32 specreg)
1750{
1751 u32 phy_addr;
1752
1753 phy_addr = JM_PHY_SPEC_REG_READ | specreg;
1754 jme_mdio_write(jme->dev, jme->mii_if.phy_id, JM_PHY_SPEC_ADDR_REG,
1755 phy_addr);
1756 return jme_mdio_read(jme->dev, jme->mii_if.phy_id,
1757 JM_PHY_SPEC_DATA_REG);
1758}
1759
1760static void
1761jme_phy_specreg_write(struct jme_adapter *jme, u32 ext_reg, u32 phy_data)
1762{
1763 u32 phy_addr;
1764
1765 phy_addr = JM_PHY_SPEC_REG_WRITE | ext_reg;
1766 jme_mdio_write(jme->dev, jme->mii_if.phy_id, JM_PHY_SPEC_DATA_REG,
1767 phy_data);
1768 jme_mdio_write(jme->dev, jme->mii_if.phy_id, JM_PHY_SPEC_ADDR_REG,
1769 phy_addr);
1770}
1771
1772static int
1773jme_phy_calibration(struct jme_adapter *jme)
1774{
1775 u32 ctrl1000, phy_data;
1776
1777 jme_phy_off(jme);
1778 jme_phy_on(jme);
1779
1780 ctrl1000 = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_CTRL1000);
1781 ctrl1000 &= ~PHY_GAD_TEST_MODE_MSK;
1782 ctrl1000 |= PHY_GAD_TEST_MODE_1;
1783 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_CTRL1000, ctrl1000);
1784
1785 phy_data = jme_phy_specreg_read(jme, JM_PHY_EXT_COMM_2_REG);
1786 phy_data &= ~JM_PHY_EXT_COMM_2_CALI_MODE_0;
1787 phy_data |= JM_PHY_EXT_COMM_2_CALI_LATCH |
1788 JM_PHY_EXT_COMM_2_CALI_ENABLE;
1789 jme_phy_specreg_write(jme, JM_PHY_EXT_COMM_2_REG, phy_data);
1790 msleep(20);
1791 phy_data = jme_phy_specreg_read(jme, JM_PHY_EXT_COMM_2_REG);
1792 phy_data &= ~(JM_PHY_EXT_COMM_2_CALI_ENABLE |
1793 JM_PHY_EXT_COMM_2_CALI_MODE_0 |
1794 JM_PHY_EXT_COMM_2_CALI_LATCH);
1795 jme_phy_specreg_write(jme, JM_PHY_EXT_COMM_2_REG, phy_data);
1796
1797
1798 ctrl1000 = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_CTRL1000);
1799 ctrl1000 &= ~PHY_GAD_TEST_MODE_MSK;
1800 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_CTRL1000, ctrl1000);
1801 return 0;
1802}
1803
1804static int
1805jme_phy_setEA(struct jme_adapter *jme)
1806{
1807 u32 phy_comm0 = 0, phy_comm1 = 0;
1808 u8 nic_ctrl;
1809
1810 pci_read_config_byte(jme->pdev, PCI_PRIV_SHARE_NICCTRL, &nic_ctrl);
1811 if ((nic_ctrl & 0x3) == JME_FLAG_PHYEA_ENABLE)
1812 return 0;
1813
1814 switch (jme->pdev->device) {
1815 case PCI_DEVICE_ID_JMICRON_JMC250:
1816 if (((jme->chip_main_rev == 5) &&
1817 ((jme->chip_sub_rev == 0) || (jme->chip_sub_rev == 1) ||
1818 (jme->chip_sub_rev == 3))) ||
1819 (jme->chip_main_rev >= 6)) {
1820 phy_comm0 = 0x008A;
1821 phy_comm1 = 0x4109;
1822 }
1823 if ((jme->chip_main_rev == 3) &&
1824 ((jme->chip_sub_rev == 1) || (jme->chip_sub_rev == 2)))
1825 phy_comm0 = 0xE088;
1826 break;
1827 case PCI_DEVICE_ID_JMICRON_JMC260:
1828 if (((jme->chip_main_rev == 5) &&
1829 ((jme->chip_sub_rev == 0) || (jme->chip_sub_rev == 1) ||
1830 (jme->chip_sub_rev == 3))) ||
1831 (jme->chip_main_rev >= 6)) {
1832 phy_comm0 = 0x008A;
1833 phy_comm1 = 0x4109;
1834 }
1835 if ((jme->chip_main_rev == 3) &&
1836 ((jme->chip_sub_rev == 1) || (jme->chip_sub_rev == 2)))
1837 phy_comm0 = 0xE088;
1838 if ((jme->chip_main_rev == 2) && (jme->chip_sub_rev == 0))
1839 phy_comm0 = 0x608A;
1840 if ((jme->chip_main_rev == 2) && (jme->chip_sub_rev == 2))
1841 phy_comm0 = 0x408A;
1842 break;
1843 default:
1844 return -ENODEV;
1845 }
1846 if (phy_comm0)
1847 jme_phy_specreg_write(jme, JM_PHY_EXT_COMM_0_REG, phy_comm0);
1848 if (phy_comm1)
1849 jme_phy_specreg_write(jme, JM_PHY_EXT_COMM_1_REG, phy_comm1);
1850
1851 return 0;
1852}
1853
1854static int
1855jme_open(struct net_device *netdev)
1856{
1857 struct jme_adapter *jme = netdev_priv(netdev);
1858 int rc;
1859
1860 jme_clear_pm(jme);
1861 JME_NAPI_ENABLE(jme);
1862
1863 tasklet_init(&jme->linkch_task, jme_link_change_tasklet,
1864 (unsigned long) jme);
1865 tasklet_init(&jme->txclean_task, jme_tx_clean_tasklet,
1866 (unsigned long) jme);
1867 tasklet_init(&jme->rxclean_task, jme_rx_clean_tasklet,
1868 (unsigned long) jme);
1869 tasklet_init(&jme->rxempty_task, jme_rx_empty_tasklet,
1870 (unsigned long) jme);
1871
1872 rc = jme_request_irq(jme);
1873 if (rc)
1874 goto err_out;
1875
1876 jme_start_irq(jme);
1877
1878 jme_phy_on(jme);
1879 if (test_bit(JME_FLAG_SSET, &jme->flags))
1880 jme_set_settings(netdev, &jme->old_ecmd);
1881 else
1882 jme_reset_phy_processor(jme);
1883 jme_phy_calibration(jme);
1884 jme_phy_setEA(jme);
1885 jme_reset_link(jme);
1886
1887 return 0;
1888
1889err_out:
1890 netif_stop_queue(netdev);
1891 netif_carrier_off(netdev);
1892 return rc;
1893}
1894
1895static void
1896jme_set_100m_half(struct jme_adapter *jme)
1897{
1898 u32 bmcr, tmp;
1899
1900 jme_phy_on(jme);
1901 bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1902 tmp = bmcr & ~(BMCR_ANENABLE | BMCR_SPEED100 |
1903 BMCR_SPEED1000 | BMCR_FULLDPLX);
1904 tmp |= BMCR_SPEED100;
1905
1906 if (bmcr != tmp)
1907 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, tmp);
1908
1909 if (jme->fpgaver)
1910 jwrite32(jme, JME_GHC, GHC_SPEED_100M | GHC_LINK_POLL);
1911 else
1912 jwrite32(jme, JME_GHC, GHC_SPEED_100M);
1913}
1914
1915#define JME_WAIT_LINK_TIME 2000
1916static void
1917jme_wait_link(struct jme_adapter *jme)
1918{
1919 u32 phylink, to = JME_WAIT_LINK_TIME;
1920
1921 mdelay(1000);
1922 phylink = jme_linkstat_from_phy(jme);
1923 while (!(phylink & PHY_LINK_UP) && (to -= 10) > 0) {
1924 mdelay(10);
1925 phylink = jme_linkstat_from_phy(jme);
1926 }
1927}
1928
1929static void
1930jme_powersave_phy(struct jme_adapter *jme)
1931{
1932 if (jme->reg_pmcs) {
1933 jme_set_100m_half(jme);
1934 if (jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN))
1935 jme_wait_link(jme);
1936 jme_clear_pm(jme);
1937 } else {
1938 jme_phy_off(jme);
1939 }
1940}
1941
1942static int
1943jme_close(struct net_device *netdev)
1944{
1945 struct jme_adapter *jme = netdev_priv(netdev);
1946
1947 netif_stop_queue(netdev);
1948 netif_carrier_off(netdev);
1949
1950 jme_stop_irq(jme);
1951 jme_free_irq(jme);
1952
1953 JME_NAPI_DISABLE(jme);
1954
1955 tasklet_kill(&jme->linkch_task);
1956 tasklet_kill(&jme->txclean_task);
1957 tasklet_kill(&jme->rxclean_task);
1958 tasklet_kill(&jme->rxempty_task);
1959
1960 jme_disable_rx_engine(jme);
1961 jme_disable_tx_engine(jme);
1962 jme_reset_mac_processor(jme);
1963 jme_free_rx_resources(jme);
1964 jme_free_tx_resources(jme);
1965 jme->phylink = 0;
1966 jme_phy_off(jme);
1967
1968 return 0;
1969}
1970
1971static int
1972jme_alloc_txdesc(struct jme_adapter *jme,
1973 struct sk_buff *skb)
1974{
1975 struct jme_ring *txring = &(jme->txring[0]);
1976 int idx, nr_alloc, mask = jme->tx_ring_mask;
1977
1978 idx = txring->next_to_use;
1979 nr_alloc = skb_shinfo(skb)->nr_frags + 2;
1980
1981 if (unlikely(atomic_read(&txring->nr_free) < nr_alloc))
1982 return -1;
1983
1984 atomic_sub(nr_alloc, &txring->nr_free);
1985
1986 txring->next_to_use = (txring->next_to_use + nr_alloc) & mask;
1987
1988 return idx;
1989}
1990
1991static void
1992jme_fill_tx_map(struct pci_dev *pdev,
1993 struct txdesc *txdesc,
1994 struct jme_buffer_info *txbi,
1995 struct page *page,
1996 u32 page_offset,
1997 u32 len,
1998 bool hidma)
1999{
2000 dma_addr_t dmaaddr;
2001
2002 dmaaddr = pci_map_page(pdev,
2003 page,
2004 page_offset,
2005 len,
2006 PCI_DMA_TODEVICE);
2007
2008 pci_dma_sync_single_for_device(pdev,
2009 dmaaddr,
2010 len,
2011 PCI_DMA_TODEVICE);
2012
2013 txdesc->dw[0] = 0;
2014 txdesc->dw[1] = 0;
2015 txdesc->desc2.flags = TXFLAG_OWN;
2016 txdesc->desc2.flags |= (hidma) ? TXFLAG_64BIT : 0;
2017 txdesc->desc2.datalen = cpu_to_le16(len);
2018 txdesc->desc2.bufaddrh = cpu_to_le32((__u64)dmaaddr >> 32);
2019 txdesc->desc2.bufaddrl = cpu_to_le32(
2020 (__u64)dmaaddr & 0xFFFFFFFFUL);
2021
2022 txbi->mapping = dmaaddr;
2023 txbi->len = len;
2024}
2025
2026static void
2027jme_map_tx_skb(struct jme_adapter *jme, struct sk_buff *skb, int idx)
2028{
2029 struct jme_ring *txring = &(jme->txring[0]);
2030 struct txdesc *txdesc = txring->desc, *ctxdesc;
2031 struct jme_buffer_info *txbi = txring->bufinf, *ctxbi;
2032 bool hidma = jme->dev->features & NETIF_F_HIGHDMA;
2033 int i, nr_frags = skb_shinfo(skb)->nr_frags;
2034 int mask = jme->tx_ring_mask;
2035 const struct skb_frag_struct *frag;
2036 u32 len;
2037
2038 for (i = 0 ; i < nr_frags ; ++i) {
2039 frag = &skb_shinfo(skb)->frags[i];
2040 ctxdesc = txdesc + ((idx + i + 2) & (mask));
2041 ctxbi = txbi + ((idx + i + 2) & (mask));
2042
2043 jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi,
2044 skb_frag_page(frag),
2045 frag->page_offset, skb_frag_size(frag), hidma);
2046 }
2047
2048 len = skb_is_nonlinear(skb) ? skb_headlen(skb) : skb->len;
2049 ctxdesc = txdesc + ((idx + 1) & (mask));
2050 ctxbi = txbi + ((idx + 1) & (mask));
2051 jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi, virt_to_page(skb->data),
2052 offset_in_page(skb->data), len, hidma);
2053
2054}
2055
2056static int
2057jme_expand_header(struct jme_adapter *jme, struct sk_buff *skb)
2058{
2059 if (unlikely(skb_shinfo(skb)->gso_size &&
2060 skb_header_cloned(skb) &&
2061 pskb_expand_head(skb, 0, 0, GFP_ATOMIC))) {
2062 dev_kfree_skb(skb);
2063 return -1;
2064 }
2065
2066 return 0;
2067}
2068
2069static int
2070jme_tx_tso(struct sk_buff *skb, __le16 *mss, u8 *flags)
2071{
2072 *mss = cpu_to_le16(skb_shinfo(skb)->gso_size << TXDESC_MSS_SHIFT);
2073 if (*mss) {
2074 *flags |= TXFLAG_LSEN;
2075
2076 if (skb->protocol == htons(ETH_P_IP)) {
2077 struct iphdr *iph = ip_hdr(skb);
2078
2079 iph->check = 0;
2080 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
2081 iph->daddr, 0,
2082 IPPROTO_TCP,
2083 0);
2084 } else {
2085 struct ipv6hdr *ip6h = ipv6_hdr(skb);
2086
2087 tcp_hdr(skb)->check = ~csum_ipv6_magic(&ip6h->saddr,
2088 &ip6h->daddr, 0,
2089 IPPROTO_TCP,
2090 0);
2091 }
2092
2093 return 0;
2094 }
2095
2096 return 1;
2097}
2098
2099static void
2100jme_tx_csum(struct jme_adapter *jme, struct sk_buff *skb, u8 *flags)
2101{
2102 if (skb->ip_summed == CHECKSUM_PARTIAL) {
2103 u8 ip_proto;
2104
2105 switch (skb->protocol) {
2106 case htons(ETH_P_IP):
2107 ip_proto = ip_hdr(skb)->protocol;
2108 break;
2109 case htons(ETH_P_IPV6):
2110 ip_proto = ipv6_hdr(skb)->nexthdr;
2111 break;
2112 default:
2113 ip_proto = 0;
2114 break;
2115 }
2116
2117 switch (ip_proto) {
2118 case IPPROTO_TCP:
2119 *flags |= TXFLAG_TCPCS;
2120 break;
2121 case IPPROTO_UDP:
2122 *flags |= TXFLAG_UDPCS;
2123 break;
2124 default:
2125 netif_err(jme, tx_err, jme->dev, "Error upper layer protocol\n");
2126 break;
2127 }
2128 }
2129}
2130
2131static inline void
2132jme_tx_vlan(struct sk_buff *skb, __le16 *vlan, u8 *flags)
2133{
2134 if (vlan_tx_tag_present(skb)) {
2135 *flags |= TXFLAG_TAGON;
2136 *vlan = cpu_to_le16(vlan_tx_tag_get(skb));
2137 }
2138}
2139
2140static int
2141jme_fill_tx_desc(struct jme_adapter *jme, struct sk_buff *skb, int idx)
2142{
2143 struct jme_ring *txring = &(jme->txring[0]);
2144 struct txdesc *txdesc;
2145 struct jme_buffer_info *txbi;
2146 u8 flags;
2147
2148 txdesc = (struct txdesc *)txring->desc + idx;
2149 txbi = txring->bufinf + idx;
2150
2151 txdesc->dw[0] = 0;
2152 txdesc->dw[1] = 0;
2153 txdesc->dw[2] = 0;
2154 txdesc->dw[3] = 0;
2155 txdesc->desc1.pktsize = cpu_to_le16(skb->len);
2156
2157
2158
2159
2160
2161
2162
2163 wmb();
2164 flags = TXFLAG_OWN | TXFLAG_INT;
2165
2166
2167
2168 if (jme_tx_tso(skb, &txdesc->desc1.mss, &flags))
2169 jme_tx_csum(jme, skb, &flags);
2170 jme_tx_vlan(skb, &txdesc->desc1.vlan, &flags);
2171 jme_map_tx_skb(jme, skb, idx);
2172 txdesc->desc1.flags = flags;
2173
2174
2175
2176
2177 wmb();
2178 txbi->nr_desc = skb_shinfo(skb)->nr_frags + 2;
2179 txbi->skb = skb;
2180 txbi->len = skb->len;
2181 txbi->start_xmit = jiffies;
2182 if (!txbi->start_xmit)
2183 txbi->start_xmit = (0UL-1);
2184
2185 return 0;
2186}
2187
2188static void
2189jme_stop_queue_if_full(struct jme_adapter *jme)
2190{
2191 struct jme_ring *txring = &(jme->txring[0]);
2192 struct jme_buffer_info *txbi = txring->bufinf;
2193 int idx = atomic_read(&txring->next_to_clean);
2194
2195 txbi += idx;
2196
2197 smp_wmb();
2198 if (unlikely(atomic_read(&txring->nr_free) < (MAX_SKB_FRAGS+2))) {
2199 netif_stop_queue(jme->dev);
2200 netif_info(jme, tx_queued, jme->dev, "TX Queue Paused\n");
2201 smp_wmb();
2202 if (atomic_read(&txring->nr_free)
2203 >= (jme->tx_wake_threshold)) {
2204 netif_wake_queue(jme->dev);
2205 netif_info(jme, tx_queued, jme->dev, "TX Queue Fast Waked\n");
2206 }
2207 }
2208
2209 if (unlikely(txbi->start_xmit &&
2210 (jiffies - txbi->start_xmit) >= TX_TIMEOUT &&
2211 txbi->skb)) {
2212 netif_stop_queue(jme->dev);
2213 netif_info(jme, tx_queued, jme->dev,
2214 "TX Queue Stopped %d@%lu\n", idx, jiffies);
2215 }
2216}
2217
2218
2219
2220
2221
2222static netdev_tx_t
2223jme_start_xmit(struct sk_buff *skb, struct net_device *netdev)
2224{
2225 struct jme_adapter *jme = netdev_priv(netdev);
2226 int idx;
2227
2228 if (unlikely(jme_expand_header(jme, skb))) {
2229 ++(NET_STAT(jme).tx_dropped);
2230 return NETDEV_TX_OK;
2231 }
2232
2233 idx = jme_alloc_txdesc(jme, skb);
2234
2235 if (unlikely(idx < 0)) {
2236 netif_stop_queue(netdev);
2237 netif_err(jme, tx_err, jme->dev,
2238 "BUG! Tx ring full when queue awake!\n");
2239
2240 return NETDEV_TX_BUSY;
2241 }
2242
2243 jme_fill_tx_desc(jme, skb, idx);
2244
2245 jwrite32(jme, JME_TXCS, jme->reg_txcs |
2246 TXCS_SELECT_QUEUE0 |
2247 TXCS_QUEUE0S |
2248 TXCS_ENABLE);
2249
2250 tx_dbg(jme, "xmit: %d+%d@%lu\n",
2251 idx, skb_shinfo(skb)->nr_frags + 2, jiffies);
2252 jme_stop_queue_if_full(jme);
2253
2254 return NETDEV_TX_OK;
2255}
2256
2257static void
2258jme_set_unicastaddr(struct net_device *netdev)
2259{
2260 struct jme_adapter *jme = netdev_priv(netdev);
2261 u32 val;
2262
2263 val = (netdev->dev_addr[3] & 0xff) << 24 |
2264 (netdev->dev_addr[2] & 0xff) << 16 |
2265 (netdev->dev_addr[1] & 0xff) << 8 |
2266 (netdev->dev_addr[0] & 0xff);
2267 jwrite32(jme, JME_RXUMA_LO, val);
2268 val = (netdev->dev_addr[5] & 0xff) << 8 |
2269 (netdev->dev_addr[4] & 0xff);
2270 jwrite32(jme, JME_RXUMA_HI, val);
2271}
2272
2273static int
2274jme_set_macaddr(struct net_device *netdev, void *p)
2275{
2276 struct jme_adapter *jme = netdev_priv(netdev);
2277 struct sockaddr *addr = p;
2278
2279 if (netif_running(netdev))
2280 return -EBUSY;
2281
2282 spin_lock_bh(&jme->macaddr_lock);
2283 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
2284 jme_set_unicastaddr(netdev);
2285 spin_unlock_bh(&jme->macaddr_lock);
2286
2287 return 0;
2288}
2289
2290static void
2291jme_set_multi(struct net_device *netdev)
2292{
2293 struct jme_adapter *jme = netdev_priv(netdev);
2294 u32 mc_hash[2] = {};
2295
2296 spin_lock_bh(&jme->rxmcs_lock);
2297
2298 jme->reg_rxmcs |= RXMCS_BRDFRAME | RXMCS_UNIFRAME;
2299
2300 if (netdev->flags & IFF_PROMISC) {
2301 jme->reg_rxmcs |= RXMCS_ALLFRAME;
2302 } else if (netdev->flags & IFF_ALLMULTI) {
2303 jme->reg_rxmcs |= RXMCS_ALLMULFRAME;
2304 } else if (netdev->flags & IFF_MULTICAST) {
2305 struct netdev_hw_addr *ha;
2306 int bit_nr;
2307
2308 jme->reg_rxmcs |= RXMCS_MULFRAME | RXMCS_MULFILTERED;
2309 netdev_for_each_mc_addr(ha, netdev) {
2310 bit_nr = ether_crc(ETH_ALEN, ha->addr) & 0x3F;
2311 mc_hash[bit_nr >> 5] |= 1 << (bit_nr & 0x1F);
2312 }
2313
2314 jwrite32(jme, JME_RXMCHT_LO, mc_hash[0]);
2315 jwrite32(jme, JME_RXMCHT_HI, mc_hash[1]);
2316 }
2317
2318 wmb();
2319 jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2320
2321 spin_unlock_bh(&jme->rxmcs_lock);
2322}
2323
2324static int
2325jme_change_mtu(struct net_device *netdev, int new_mtu)
2326{
2327 struct jme_adapter *jme = netdev_priv(netdev);
2328
2329 if (new_mtu == jme->old_mtu)
2330 return 0;
2331
2332 if (((new_mtu + ETH_HLEN) > MAX_ETHERNET_JUMBO_PACKET_SIZE) ||
2333 ((new_mtu) < IPV6_MIN_MTU))
2334 return -EINVAL;
2335
2336
2337 netdev->mtu = new_mtu;
2338 netdev_update_features(netdev);
2339
2340 jme_restart_rx_engine(jme);
2341 jme_reset_link(jme);
2342
2343 return 0;
2344}
2345
2346static void
2347jme_tx_timeout(struct net_device *netdev)
2348{
2349 struct jme_adapter *jme = netdev_priv(netdev);
2350
2351 jme->phylink = 0;
2352 jme_reset_phy_processor(jme);
2353 if (test_bit(JME_FLAG_SSET, &jme->flags))
2354 jme_set_settings(netdev, &jme->old_ecmd);
2355
2356
2357
2358
2359 jme_reset_link(jme);
2360}
2361
2362static inline void jme_pause_rx(struct jme_adapter *jme)
2363{
2364 atomic_dec(&jme->link_changing);
2365
2366 jme_set_rx_pcc(jme, PCC_OFF);
2367 if (test_bit(JME_FLAG_POLL, &jme->flags)) {
2368 JME_NAPI_DISABLE(jme);
2369 } else {
2370 tasklet_disable(&jme->rxclean_task);
2371 tasklet_disable(&jme->rxempty_task);
2372 }
2373}
2374
2375static inline void jme_resume_rx(struct jme_adapter *jme)
2376{
2377 struct dynpcc_info *dpi = &(jme->dpi);
2378
2379 if (test_bit(JME_FLAG_POLL, &jme->flags)) {
2380 JME_NAPI_ENABLE(jme);
2381 } else {
2382 tasklet_hi_enable(&jme->rxclean_task);
2383 tasklet_hi_enable(&jme->rxempty_task);
2384 }
2385 dpi->cur = PCC_P1;
2386 dpi->attempt = PCC_P1;
2387 dpi->cnt = 0;
2388 jme_set_rx_pcc(jme, PCC_P1);
2389
2390 atomic_inc(&jme->link_changing);
2391}
2392
2393static void
2394jme_get_drvinfo(struct net_device *netdev,
2395 struct ethtool_drvinfo *info)
2396{
2397 struct jme_adapter *jme = netdev_priv(netdev);
2398
2399 strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
2400 strlcpy(info->version, DRV_VERSION, sizeof(info->version));
2401 strlcpy(info->bus_info, pci_name(jme->pdev), sizeof(info->bus_info));
2402}
2403
2404static int
2405jme_get_regs_len(struct net_device *netdev)
2406{
2407 return JME_REG_LEN;
2408}
2409
2410static void
2411mmapio_memcpy(struct jme_adapter *jme, u32 *p, u32 reg, int len)
2412{
2413 int i;
2414
2415 for (i = 0 ; i < len ; i += 4)
2416 p[i >> 2] = jread32(jme, reg + i);
2417}
2418
2419static void
2420mdio_memcpy(struct jme_adapter *jme, u32 *p, int reg_nr)
2421{
2422 int i;
2423 u16 *p16 = (u16 *)p;
2424
2425 for (i = 0 ; i < reg_nr ; ++i)
2426 p16[i] = jme_mdio_read(jme->dev, jme->mii_if.phy_id, i);
2427}
2428
2429static void
2430jme_get_regs(struct net_device *netdev, struct ethtool_regs *regs, void *p)
2431{
2432 struct jme_adapter *jme = netdev_priv(netdev);
2433 u32 *p32 = (u32 *)p;
2434
2435 memset(p, 0xFF, JME_REG_LEN);
2436
2437 regs->version = 1;
2438 mmapio_memcpy(jme, p32, JME_MAC, JME_MAC_LEN);
2439
2440 p32 += 0x100 >> 2;
2441 mmapio_memcpy(jme, p32, JME_PHY, JME_PHY_LEN);
2442
2443 p32 += 0x100 >> 2;
2444 mmapio_memcpy(jme, p32, JME_MISC, JME_MISC_LEN);
2445
2446 p32 += 0x100 >> 2;
2447 mmapio_memcpy(jme, p32, JME_RSS, JME_RSS_LEN);
2448
2449 p32 += 0x100 >> 2;
2450 mdio_memcpy(jme, p32, JME_PHY_REG_NR);
2451}
2452
2453static int
2454jme_get_coalesce(struct net_device *netdev, struct ethtool_coalesce *ecmd)
2455{
2456 struct jme_adapter *jme = netdev_priv(netdev);
2457
2458 ecmd->tx_coalesce_usecs = PCC_TX_TO;
2459 ecmd->tx_max_coalesced_frames = PCC_TX_CNT;
2460
2461 if (test_bit(JME_FLAG_POLL, &jme->flags)) {
2462 ecmd->use_adaptive_rx_coalesce = false;
2463 ecmd->rx_coalesce_usecs = 0;
2464 ecmd->rx_max_coalesced_frames = 0;
2465 return 0;
2466 }
2467
2468 ecmd->use_adaptive_rx_coalesce = true;
2469
2470 switch (jme->dpi.cur) {
2471 case PCC_P1:
2472 ecmd->rx_coalesce_usecs = PCC_P1_TO;
2473 ecmd->rx_max_coalesced_frames = PCC_P1_CNT;
2474 break;
2475 case PCC_P2:
2476 ecmd->rx_coalesce_usecs = PCC_P2_TO;
2477 ecmd->rx_max_coalesced_frames = PCC_P2_CNT;
2478 break;
2479 case PCC_P3:
2480 ecmd->rx_coalesce_usecs = PCC_P3_TO;
2481 ecmd->rx_max_coalesced_frames = PCC_P3_CNT;
2482 break;
2483 default:
2484 break;
2485 }
2486
2487 return 0;
2488}
2489
2490static int
2491jme_set_coalesce(struct net_device *netdev, struct ethtool_coalesce *ecmd)
2492{
2493 struct jme_adapter *jme = netdev_priv(netdev);
2494 struct dynpcc_info *dpi = &(jme->dpi);
2495
2496 if (netif_running(netdev))
2497 return -EBUSY;
2498
2499 if (ecmd->use_adaptive_rx_coalesce &&
2500 test_bit(JME_FLAG_POLL, &jme->flags)) {
2501 clear_bit(JME_FLAG_POLL, &jme->flags);
2502 jme->jme_rx = netif_rx;
2503 dpi->cur = PCC_P1;
2504 dpi->attempt = PCC_P1;
2505 dpi->cnt = 0;
2506 jme_set_rx_pcc(jme, PCC_P1);
2507 jme_interrupt_mode(jme);
2508 } else if (!(ecmd->use_adaptive_rx_coalesce) &&
2509 !(test_bit(JME_FLAG_POLL, &jme->flags))) {
2510 set_bit(JME_FLAG_POLL, &jme->flags);
2511 jme->jme_rx = netif_receive_skb;
2512 jme_interrupt_mode(jme);
2513 }
2514
2515 return 0;
2516}
2517
2518static void
2519jme_get_pauseparam(struct net_device *netdev,
2520 struct ethtool_pauseparam *ecmd)
2521{
2522 struct jme_adapter *jme = netdev_priv(netdev);
2523 u32 val;
2524
2525 ecmd->tx_pause = (jme->reg_txpfc & TXPFC_PF_EN) != 0;
2526 ecmd->rx_pause = (jme->reg_rxmcs & RXMCS_FLOWCTRL) != 0;
2527
2528 spin_lock_bh(&jme->phy_lock);
2529 val = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_ADVERTISE);
2530 spin_unlock_bh(&jme->phy_lock);
2531
2532 ecmd->autoneg =
2533 (val & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) != 0;
2534}
2535
2536static int
2537jme_set_pauseparam(struct net_device *netdev,
2538 struct ethtool_pauseparam *ecmd)
2539{
2540 struct jme_adapter *jme = netdev_priv(netdev);
2541 u32 val;
2542
2543 if (((jme->reg_txpfc & TXPFC_PF_EN) != 0) ^
2544 (ecmd->tx_pause != 0)) {
2545
2546 if (ecmd->tx_pause)
2547 jme->reg_txpfc |= TXPFC_PF_EN;
2548 else
2549 jme->reg_txpfc &= ~TXPFC_PF_EN;
2550
2551 jwrite32(jme, JME_TXPFC, jme->reg_txpfc);
2552 }
2553
2554 spin_lock_bh(&jme->rxmcs_lock);
2555 if (((jme->reg_rxmcs & RXMCS_FLOWCTRL) != 0) ^
2556 (ecmd->rx_pause != 0)) {
2557
2558 if (ecmd->rx_pause)
2559 jme->reg_rxmcs |= RXMCS_FLOWCTRL;
2560 else
2561 jme->reg_rxmcs &= ~RXMCS_FLOWCTRL;
2562
2563 jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2564 }
2565 spin_unlock_bh(&jme->rxmcs_lock);
2566
2567 spin_lock_bh(&jme->phy_lock);
2568 val = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_ADVERTISE);
2569 if (((val & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) != 0) ^
2570 (ecmd->autoneg != 0)) {
2571
2572 if (ecmd->autoneg)
2573 val |= (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
2574 else
2575 val &= ~(ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
2576
2577 jme_mdio_write(jme->dev, jme->mii_if.phy_id,
2578 MII_ADVERTISE, val);
2579 }
2580 spin_unlock_bh(&jme->phy_lock);
2581
2582 return 0;
2583}
2584
2585static void
2586jme_get_wol(struct net_device *netdev,
2587 struct ethtool_wolinfo *wol)
2588{
2589 struct jme_adapter *jme = netdev_priv(netdev);
2590
2591 wol->supported = WAKE_MAGIC | WAKE_PHY;
2592
2593 wol->wolopts = 0;
2594
2595 if (jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN))
2596 wol->wolopts |= WAKE_PHY;
2597
2598 if (jme->reg_pmcs & PMCS_MFEN)
2599 wol->wolopts |= WAKE_MAGIC;
2600
2601}
2602
2603static int
2604jme_set_wol(struct net_device *netdev,
2605 struct ethtool_wolinfo *wol)
2606{
2607 struct jme_adapter *jme = netdev_priv(netdev);
2608
2609 if (wol->wolopts & (WAKE_MAGICSECURE |
2610 WAKE_UCAST |
2611 WAKE_MCAST |
2612 WAKE_BCAST |
2613 WAKE_ARP))
2614 return -EOPNOTSUPP;
2615
2616 jme->reg_pmcs = 0;
2617
2618 if (wol->wolopts & WAKE_PHY)
2619 jme->reg_pmcs |= PMCS_LFEN | PMCS_LREN;
2620
2621 if (wol->wolopts & WAKE_MAGIC)
2622 jme->reg_pmcs |= PMCS_MFEN;
2623
2624 jwrite32(jme, JME_PMCS, jme->reg_pmcs);
2625 device_set_wakeup_enable(&jme->pdev->dev, !!(jme->reg_pmcs));
2626
2627 return 0;
2628}
2629
2630static int
2631jme_get_settings(struct net_device *netdev,
2632 struct ethtool_cmd *ecmd)
2633{
2634 struct jme_adapter *jme = netdev_priv(netdev);
2635 int rc;
2636
2637 spin_lock_bh(&jme->phy_lock);
2638 rc = mii_ethtool_gset(&(jme->mii_if), ecmd);
2639 spin_unlock_bh(&jme->phy_lock);
2640 return rc;
2641}
2642
2643static int
2644jme_set_settings(struct net_device *netdev,
2645 struct ethtool_cmd *ecmd)
2646{
2647 struct jme_adapter *jme = netdev_priv(netdev);
2648 int rc, fdc = 0;
2649
2650 if (ethtool_cmd_speed(ecmd) == SPEED_1000
2651 && ecmd->autoneg != AUTONEG_ENABLE)
2652 return -EINVAL;
2653
2654
2655
2656
2657
2658 if (jme->mii_if.force_media &&
2659 ecmd->autoneg != AUTONEG_ENABLE &&
2660 (jme->mii_if.full_duplex != ecmd->duplex))
2661 fdc = 1;
2662
2663 spin_lock_bh(&jme->phy_lock);
2664 rc = mii_ethtool_sset(&(jme->mii_if), ecmd);
2665 spin_unlock_bh(&jme->phy_lock);
2666
2667 if (!rc) {
2668 if (fdc)
2669 jme_reset_link(jme);
2670 jme->old_ecmd = *ecmd;
2671 set_bit(JME_FLAG_SSET, &jme->flags);
2672 }
2673
2674 return rc;
2675}
2676
2677static int
2678jme_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd)
2679{
2680 int rc;
2681 struct jme_adapter *jme = netdev_priv(netdev);
2682 struct mii_ioctl_data *mii_data = if_mii(rq);
2683 unsigned int duplex_chg;
2684
2685 if (cmd == SIOCSMIIREG) {
2686 u16 val = mii_data->val_in;
2687 if (!(val & (BMCR_RESET|BMCR_ANENABLE)) &&
2688 (val & BMCR_SPEED1000))
2689 return -EINVAL;
2690 }
2691
2692 spin_lock_bh(&jme->phy_lock);
2693 rc = generic_mii_ioctl(&jme->mii_if, mii_data, cmd, &duplex_chg);
2694 spin_unlock_bh(&jme->phy_lock);
2695
2696 if (!rc && (cmd == SIOCSMIIREG)) {
2697 if (duplex_chg)
2698 jme_reset_link(jme);
2699 jme_get_settings(netdev, &jme->old_ecmd);
2700 set_bit(JME_FLAG_SSET, &jme->flags);
2701 }
2702
2703 return rc;
2704}
2705
2706static u32
2707jme_get_link(struct net_device *netdev)
2708{
2709 struct jme_adapter *jme = netdev_priv(netdev);
2710 return jread32(jme, JME_PHY_LINK) & PHY_LINK_UP;
2711}
2712
2713static u32
2714jme_get_msglevel(struct net_device *netdev)
2715{
2716 struct jme_adapter *jme = netdev_priv(netdev);
2717 return jme->msg_enable;
2718}
2719
2720static void
2721jme_set_msglevel(struct net_device *netdev, u32 value)
2722{
2723 struct jme_adapter *jme = netdev_priv(netdev);
2724 jme->msg_enable = value;
2725}
2726
2727static netdev_features_t
2728jme_fix_features(struct net_device *netdev, netdev_features_t features)
2729{
2730 if (netdev->mtu > 1900)
2731 features &= ~(NETIF_F_ALL_TSO | NETIF_F_ALL_CSUM);
2732 return features;
2733}
2734
2735static int
2736jme_set_features(struct net_device *netdev, netdev_features_t features)
2737{
2738 struct jme_adapter *jme = netdev_priv(netdev);
2739
2740 spin_lock_bh(&jme->rxmcs_lock);
2741 if (features & NETIF_F_RXCSUM)
2742 jme->reg_rxmcs |= RXMCS_CHECKSUM;
2743 else
2744 jme->reg_rxmcs &= ~RXMCS_CHECKSUM;
2745 jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2746 spin_unlock_bh(&jme->rxmcs_lock);
2747
2748 return 0;
2749}
2750
2751#ifdef CONFIG_NET_POLL_CONTROLLER
2752static void jme_netpoll(struct net_device *dev)
2753{
2754 unsigned long flags;
2755
2756 local_irq_save(flags);
2757 jme_intr(dev->irq, dev);
2758 local_irq_restore(flags);
2759}
2760#endif
2761
2762static int
2763jme_nway_reset(struct net_device *netdev)
2764{
2765 struct jme_adapter *jme = netdev_priv(netdev);
2766 jme_restart_an(jme);
2767 return 0;
2768}
2769
2770static u8
2771jme_smb_read(struct jme_adapter *jme, unsigned int addr)
2772{
2773 u32 val;
2774 int to;
2775
2776 val = jread32(jme, JME_SMBCSR);
2777 to = JME_SMB_BUSY_TIMEOUT;
2778 while ((val & SMBCSR_BUSY) && --to) {
2779 msleep(1);
2780 val = jread32(jme, JME_SMBCSR);
2781 }
2782 if (!to) {
2783 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2784 return 0xFF;
2785 }
2786
2787 jwrite32(jme, JME_SMBINTF,
2788 ((addr << SMBINTF_HWADDR_SHIFT) & SMBINTF_HWADDR) |
2789 SMBINTF_HWRWN_READ |
2790 SMBINTF_HWCMD);
2791
2792 val = jread32(jme, JME_SMBINTF);
2793 to = JME_SMB_BUSY_TIMEOUT;
2794 while ((val & SMBINTF_HWCMD) && --to) {
2795 msleep(1);
2796 val = jread32(jme, JME_SMBINTF);
2797 }
2798 if (!to) {
2799 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2800 return 0xFF;
2801 }
2802
2803 return (val & SMBINTF_HWDATR) >> SMBINTF_HWDATR_SHIFT;
2804}
2805
2806static void
2807jme_smb_write(struct jme_adapter *jme, unsigned int addr, u8 data)
2808{
2809 u32 val;
2810 int to;
2811
2812 val = jread32(jme, JME_SMBCSR);
2813 to = JME_SMB_BUSY_TIMEOUT;
2814 while ((val & SMBCSR_BUSY) && --to) {
2815 msleep(1);
2816 val = jread32(jme, JME_SMBCSR);
2817 }
2818 if (!to) {
2819 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2820 return;
2821 }
2822
2823 jwrite32(jme, JME_SMBINTF,
2824 ((data << SMBINTF_HWDATW_SHIFT) & SMBINTF_HWDATW) |
2825 ((addr << SMBINTF_HWADDR_SHIFT) & SMBINTF_HWADDR) |
2826 SMBINTF_HWRWN_WRITE |
2827 SMBINTF_HWCMD);
2828
2829 val = jread32(jme, JME_SMBINTF);
2830 to = JME_SMB_BUSY_TIMEOUT;
2831 while ((val & SMBINTF_HWCMD) && --to) {
2832 msleep(1);
2833 val = jread32(jme, JME_SMBINTF);
2834 }
2835 if (!to) {
2836 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2837 return;
2838 }
2839
2840 mdelay(2);
2841}
2842
2843static int
2844jme_get_eeprom_len(struct net_device *netdev)
2845{
2846 struct jme_adapter *jme = netdev_priv(netdev);
2847 u32 val;
2848 val = jread32(jme, JME_SMBCSR);
2849 return (val & SMBCSR_EEPROMD) ? JME_SMB_LEN : 0;
2850}
2851
2852static int
2853jme_get_eeprom(struct net_device *netdev,
2854 struct ethtool_eeprom *eeprom, u8 *data)
2855{
2856 struct jme_adapter *jme = netdev_priv(netdev);
2857 int i, offset = eeprom->offset, len = eeprom->len;
2858
2859
2860
2861
2862 eeprom->magic = JME_EEPROM_MAGIC;
2863 for (i = 0 ; i < len ; ++i)
2864 data[i] = jme_smb_read(jme, i + offset);
2865
2866 return 0;
2867}
2868
2869static int
2870jme_set_eeprom(struct net_device *netdev,
2871 struct ethtool_eeprom *eeprom, u8 *data)
2872{
2873 struct jme_adapter *jme = netdev_priv(netdev);
2874 int i, offset = eeprom->offset, len = eeprom->len;
2875
2876 if (eeprom->magic != JME_EEPROM_MAGIC)
2877 return -EINVAL;
2878
2879
2880
2881
2882 for (i = 0 ; i < len ; ++i)
2883 jme_smb_write(jme, i + offset, data[i]);
2884
2885 return 0;
2886}
2887
2888static const struct ethtool_ops jme_ethtool_ops = {
2889 .get_drvinfo = jme_get_drvinfo,
2890 .get_regs_len = jme_get_regs_len,
2891 .get_regs = jme_get_regs,
2892 .get_coalesce = jme_get_coalesce,
2893 .set_coalesce = jme_set_coalesce,
2894 .get_pauseparam = jme_get_pauseparam,
2895 .set_pauseparam = jme_set_pauseparam,
2896 .get_wol = jme_get_wol,
2897 .set_wol = jme_set_wol,
2898 .get_settings = jme_get_settings,
2899 .set_settings = jme_set_settings,
2900 .get_link = jme_get_link,
2901 .get_msglevel = jme_get_msglevel,
2902 .set_msglevel = jme_set_msglevel,
2903 .nway_reset = jme_nway_reset,
2904 .get_eeprom_len = jme_get_eeprom_len,
2905 .get_eeprom = jme_get_eeprom,
2906 .set_eeprom = jme_set_eeprom,
2907};
2908
2909static int
2910jme_pci_dma64(struct pci_dev *pdev)
2911{
2912 if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250 &&
2913 !pci_set_dma_mask(pdev, DMA_BIT_MASK(64)))
2914 if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)))
2915 return 1;
2916
2917 if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250 &&
2918 !pci_set_dma_mask(pdev, DMA_BIT_MASK(40)))
2919 if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(40)))
2920 return 1;
2921
2922 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32)))
2923 if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)))
2924 return 0;
2925
2926 return -1;
2927}
2928
2929static inline void
2930jme_phy_init(struct jme_adapter *jme)
2931{
2932 u16 reg26;
2933
2934 reg26 = jme_mdio_read(jme->dev, jme->mii_if.phy_id, 26);
2935 jme_mdio_write(jme->dev, jme->mii_if.phy_id, 26, reg26 | 0x1000);
2936}
2937
2938static inline void
2939jme_check_hw_ver(struct jme_adapter *jme)
2940{
2941 u32 chipmode;
2942
2943 chipmode = jread32(jme, JME_CHIPMODE);
2944
2945 jme->fpgaver = (chipmode & CM_FPGAVER_MASK) >> CM_FPGAVER_SHIFT;
2946 jme->chiprev = (chipmode & CM_CHIPREV_MASK) >> CM_CHIPREV_SHIFT;
2947 jme->chip_main_rev = jme->chiprev & 0xF;
2948 jme->chip_sub_rev = (jme->chiprev >> 4) & 0xF;
2949}
2950
2951static const struct net_device_ops jme_netdev_ops = {
2952 .ndo_open = jme_open,
2953 .ndo_stop = jme_close,
2954 .ndo_validate_addr = eth_validate_addr,
2955 .ndo_do_ioctl = jme_ioctl,
2956 .ndo_start_xmit = jme_start_xmit,
2957 .ndo_set_mac_address = jme_set_macaddr,
2958 .ndo_set_rx_mode = jme_set_multi,
2959 .ndo_change_mtu = jme_change_mtu,
2960 .ndo_tx_timeout = jme_tx_timeout,
2961 .ndo_fix_features = jme_fix_features,
2962 .ndo_set_features = jme_set_features,
2963#ifdef CONFIG_NET_POLL_CONTROLLER
2964 .ndo_poll_controller = jme_netpoll,
2965#endif
2966};
2967
2968static int
2969jme_init_one(struct pci_dev *pdev,
2970 const struct pci_device_id *ent)
2971{
2972 int rc = 0, using_dac, i;
2973 struct net_device *netdev;
2974 struct jme_adapter *jme;
2975 u16 bmcr, bmsr;
2976 u32 apmc;
2977
2978
2979
2980
2981 pci_disable_link_state(pdev, PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1 |
2982 PCIE_LINK_STATE_CLKPM);
2983
2984 rc = pci_enable_device(pdev);
2985 if (rc) {
2986 pr_err("Cannot enable PCI device\n");
2987 goto err_out;
2988 }
2989
2990 using_dac = jme_pci_dma64(pdev);
2991 if (using_dac < 0) {
2992 pr_err("Cannot set PCI DMA Mask\n");
2993 rc = -EIO;
2994 goto err_out_disable_pdev;
2995 }
2996
2997 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
2998 pr_err("No PCI resource region found\n");
2999 rc = -ENOMEM;
3000 goto err_out_disable_pdev;
3001 }
3002
3003 rc = pci_request_regions(pdev, DRV_NAME);
3004 if (rc) {
3005 pr_err("Cannot obtain PCI resource region\n");
3006 goto err_out_disable_pdev;
3007 }
3008
3009 pci_set_master(pdev);
3010
3011
3012
3013
3014 netdev = alloc_etherdev(sizeof(*jme));
3015 if (!netdev) {
3016 rc = -ENOMEM;
3017 goto err_out_release_regions;
3018 }
3019 netdev->netdev_ops = &jme_netdev_ops;
3020 netdev->ethtool_ops = &jme_ethtool_ops;
3021 netdev->watchdog_timeo = TX_TIMEOUT;
3022 netdev->hw_features = NETIF_F_IP_CSUM |
3023 NETIF_F_IPV6_CSUM |
3024 NETIF_F_SG |
3025 NETIF_F_TSO |
3026 NETIF_F_TSO6 |
3027 NETIF_F_RXCSUM;
3028 netdev->features = NETIF_F_IP_CSUM |
3029 NETIF_F_IPV6_CSUM |
3030 NETIF_F_SG |
3031 NETIF_F_TSO |
3032 NETIF_F_TSO6 |
3033 NETIF_F_HW_VLAN_CTAG_TX |
3034 NETIF_F_HW_VLAN_CTAG_RX;
3035 if (using_dac)
3036 netdev->features |= NETIF_F_HIGHDMA;
3037
3038 SET_NETDEV_DEV(netdev, &pdev->dev);
3039 pci_set_drvdata(pdev, netdev);
3040
3041
3042
3043
3044 jme = netdev_priv(netdev);
3045 jme->pdev = pdev;
3046 jme->dev = netdev;
3047 jme->jme_rx = netif_rx;
3048 jme->old_mtu = netdev->mtu = 1500;
3049 jme->phylink = 0;
3050 jme->tx_ring_size = 1 << 10;
3051 jme->tx_ring_mask = jme->tx_ring_size - 1;
3052 jme->tx_wake_threshold = 1 << 9;
3053 jme->rx_ring_size = 1 << 9;
3054 jme->rx_ring_mask = jme->rx_ring_size - 1;
3055 jme->msg_enable = JME_DEF_MSG_ENABLE;
3056 jme->regs = ioremap(pci_resource_start(pdev, 0),
3057 pci_resource_len(pdev, 0));
3058 if (!(jme->regs)) {
3059 pr_err("Mapping PCI resource region error\n");
3060 rc = -ENOMEM;
3061 goto err_out_free_netdev;
3062 }
3063
3064 if (no_pseudohp) {
3065 apmc = jread32(jme, JME_APMC) & ~JME_APMC_PSEUDO_HP_EN;
3066 jwrite32(jme, JME_APMC, apmc);
3067 } else if (force_pseudohp) {
3068 apmc = jread32(jme, JME_APMC) | JME_APMC_PSEUDO_HP_EN;
3069 jwrite32(jme, JME_APMC, apmc);
3070 }
3071
3072 NETIF_NAPI_SET(netdev, &jme->napi, jme_poll, NAPI_POLL_WEIGHT)
3073
3074 spin_lock_init(&jme->phy_lock);
3075 spin_lock_init(&jme->macaddr_lock);
3076 spin_lock_init(&jme->rxmcs_lock);
3077
3078 atomic_set(&jme->link_changing, 1);
3079 atomic_set(&jme->rx_cleaning, 1);
3080 atomic_set(&jme->tx_cleaning, 1);
3081 atomic_set(&jme->rx_empty, 1);
3082
3083 tasklet_init(&jme->pcc_task,
3084 jme_pcc_tasklet,
3085 (unsigned long) jme);
3086 jme->dpi.cur = PCC_P1;
3087
3088 jme->reg_ghc = 0;
3089 jme->reg_rxcs = RXCS_DEFAULT;
3090 jme->reg_rxmcs = RXMCS_DEFAULT;
3091 jme->reg_txpfc = 0;
3092 jme->reg_pmcs = PMCS_MFEN;
3093 jme->reg_gpreg1 = GPREG1_DEFAULT;
3094
3095 if (jme->reg_rxmcs & RXMCS_CHECKSUM)
3096 netdev->features |= NETIF_F_RXCSUM;
3097
3098
3099
3100
3101 pci_read_config_byte(pdev, PCI_DCSR_MRRS, &jme->mrrs);
3102 jme->mrrs &= PCI_DCSR_MRRS_MASK;
3103 switch (jme->mrrs) {
3104 case MRRS_128B:
3105 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_128B;
3106 break;
3107 case MRRS_256B:
3108 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_256B;
3109 break;
3110 default:
3111 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_512B;
3112 break;
3113 }
3114
3115
3116
3117
3118 jme_check_hw_ver(jme);
3119 jme->mii_if.dev = netdev;
3120 if (jme->fpgaver) {
3121 jme->mii_if.phy_id = 0;
3122 for (i = 1 ; i < 32 ; ++i) {
3123 bmcr = jme_mdio_read(netdev, i, MII_BMCR);
3124 bmsr = jme_mdio_read(netdev, i, MII_BMSR);
3125 if (bmcr != 0xFFFFU && (bmcr != 0 || bmsr != 0)) {
3126 jme->mii_if.phy_id = i;
3127 break;
3128 }
3129 }
3130
3131 if (!jme->mii_if.phy_id) {
3132 rc = -EIO;
3133 pr_err("Can not find phy_id\n");
3134 goto err_out_unmap;
3135 }
3136
3137 jme->reg_ghc |= GHC_LINK_POLL;
3138 } else {
3139 jme->mii_if.phy_id = 1;
3140 }
3141 if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250)
3142 jme->mii_if.supports_gmii = true;
3143 else
3144 jme->mii_if.supports_gmii = false;
3145 jme->mii_if.phy_id_mask = 0x1F;
3146 jme->mii_if.reg_num_mask = 0x1F;
3147 jme->mii_if.mdio_read = jme_mdio_read;
3148 jme->mii_if.mdio_write = jme_mdio_write;
3149
3150 jme_clear_pm(jme);
3151 device_set_wakeup_enable(&pdev->dev, true);
3152
3153 jme_set_phyfifo_5level(jme);
3154 jme->pcirev = pdev->revision;
3155 if (!jme->fpgaver)
3156 jme_phy_init(jme);
3157 jme_phy_off(jme);
3158
3159
3160
3161
3162 jme_reset_mac_processor(jme);
3163 rc = jme_reload_eeprom(jme);
3164 if (rc) {
3165 pr_err("Reload eeprom for reading MAC Address error\n");
3166 goto err_out_unmap;
3167 }
3168 jme_load_macaddr(netdev);
3169
3170
3171
3172
3173 netif_carrier_off(netdev);
3174
3175 rc = register_netdev(netdev);
3176 if (rc) {
3177 pr_err("Cannot register net device\n");
3178 goto err_out_unmap;
3179 }
3180
3181 netif_info(jme, probe, jme->dev, "%s%s chiprev:%x pcirev:%x macaddr:%pM\n",
3182 (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC250) ?
3183 "JMC250 Gigabit Ethernet" :
3184 (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC260) ?
3185 "JMC260 Fast Ethernet" : "Unknown",
3186 (jme->fpgaver != 0) ? " (FPGA)" : "",
3187 (jme->fpgaver != 0) ? jme->fpgaver : jme->chiprev,
3188 jme->pcirev, netdev->dev_addr);
3189
3190 return 0;
3191
3192err_out_unmap:
3193 iounmap(jme->regs);
3194err_out_free_netdev:
3195 pci_set_drvdata(pdev, NULL);
3196 free_netdev(netdev);
3197err_out_release_regions:
3198 pci_release_regions(pdev);
3199err_out_disable_pdev:
3200 pci_disable_device(pdev);
3201err_out:
3202 return rc;
3203}
3204
3205static void
3206jme_remove_one(struct pci_dev *pdev)
3207{
3208 struct net_device *netdev = pci_get_drvdata(pdev);
3209 struct jme_adapter *jme = netdev_priv(netdev);
3210
3211 unregister_netdev(netdev);
3212 iounmap(jme->regs);
3213 pci_set_drvdata(pdev, NULL);
3214 free_netdev(netdev);
3215 pci_release_regions(pdev);
3216 pci_disable_device(pdev);
3217
3218}
3219
3220static void
3221jme_shutdown(struct pci_dev *pdev)
3222{
3223 struct net_device *netdev = pci_get_drvdata(pdev);
3224 struct jme_adapter *jme = netdev_priv(netdev);
3225
3226 jme_powersave_phy(jme);
3227 pci_pme_active(pdev, true);
3228}
3229
3230#ifdef CONFIG_PM_SLEEP
3231static int
3232jme_suspend(struct device *dev)
3233{
3234 struct pci_dev *pdev = to_pci_dev(dev);
3235 struct net_device *netdev = pci_get_drvdata(pdev);
3236 struct jme_adapter *jme = netdev_priv(netdev);
3237
3238 if (!netif_running(netdev))
3239 return 0;
3240
3241 atomic_dec(&jme->link_changing);
3242
3243 netif_device_detach(netdev);
3244 netif_stop_queue(netdev);
3245 jme_stop_irq(jme);
3246
3247 tasklet_disable(&jme->txclean_task);
3248 tasklet_disable(&jme->rxclean_task);
3249 tasklet_disable(&jme->rxempty_task);
3250
3251 if (netif_carrier_ok(netdev)) {
3252 if (test_bit(JME_FLAG_POLL, &jme->flags))
3253 jme_polling_mode(jme);
3254
3255 jme_stop_pcc_timer(jme);
3256 jme_disable_rx_engine(jme);
3257 jme_disable_tx_engine(jme);
3258 jme_reset_mac_processor(jme);
3259 jme_free_rx_resources(jme);
3260 jme_free_tx_resources(jme);
3261 netif_carrier_off(netdev);
3262 jme->phylink = 0;
3263 }
3264
3265 tasklet_enable(&jme->txclean_task);
3266 tasklet_hi_enable(&jme->rxclean_task);
3267 tasklet_hi_enable(&jme->rxempty_task);
3268
3269 jme_powersave_phy(jme);
3270
3271 return 0;
3272}
3273
3274static int
3275jme_resume(struct device *dev)
3276{
3277 struct pci_dev *pdev = to_pci_dev(dev);
3278 struct net_device *netdev = pci_get_drvdata(pdev);
3279 struct jme_adapter *jme = netdev_priv(netdev);
3280
3281 if (!netif_running(netdev))
3282 return 0;
3283
3284 jme_clear_pm(jme);
3285 jme_phy_on(jme);
3286 if (test_bit(JME_FLAG_SSET, &jme->flags))
3287 jme_set_settings(netdev, &jme->old_ecmd);
3288 else
3289 jme_reset_phy_processor(jme);
3290 jme_phy_calibration(jme);
3291 jme_phy_setEA(jme);
3292 jme_start_irq(jme);
3293 netif_device_attach(netdev);
3294
3295 atomic_inc(&jme->link_changing);
3296
3297 jme_reset_link(jme);
3298
3299 return 0;
3300}
3301
3302static SIMPLE_DEV_PM_OPS(jme_pm_ops, jme_suspend, jme_resume);
3303#define JME_PM_OPS (&jme_pm_ops)
3304
3305#else
3306
3307#define JME_PM_OPS NULL
3308#endif
3309
3310static DEFINE_PCI_DEVICE_TABLE(jme_pci_tbl) = {
3311 { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMC250) },
3312 { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMC260) },
3313 { }
3314};
3315
3316static struct pci_driver jme_driver = {
3317 .name = DRV_NAME,
3318 .id_table = jme_pci_tbl,
3319 .probe = jme_init_one,
3320 .remove = jme_remove_one,
3321 .shutdown = jme_shutdown,
3322 .driver.pm = JME_PM_OPS,
3323};
3324
3325static int __init
3326jme_init_module(void)
3327{
3328 pr_info("JMicron JMC2XX ethernet driver version %s\n", DRV_VERSION);
3329 return pci_register_driver(&jme_driver);
3330}
3331
3332static void __exit
3333jme_cleanup_module(void)
3334{
3335 pci_unregister_driver(&jme_driver);
3336}
3337
3338module_init(jme_init_module);
3339module_exit(jme_cleanup_module);
3340
3341MODULE_AUTHOR("Guo-Fu Tseng <cooldavid@cooldavid.org>");
3342MODULE_DESCRIPTION("JMicron JMC2x0 PCI Express Ethernet driver");
3343MODULE_LICENSE("GPL");
3344MODULE_VERSION(DRV_VERSION);
3345MODULE_DEVICE_TABLE(pci, jme_pci_tbl);
3346
