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1/*
2 * JMicron JMC2x0 series PCIe Ethernet Linux Device Driver
3 *
4 * Copyright 2008 JMicron Technology Corporation
5 * http://www.jmicron.com/
6 *
7 * Author: Guo-Fu Tseng <cooldavid@cooldavid.org>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 *
22 */
23
24#include <linux/version.h>
25#include <linux/module.h>
26#include <linux/kernel.h>
27#include <linux/pci.h>
28#include <linux/netdevice.h>
29#include <linux/etherdevice.h>
30#include <linux/ethtool.h>
31#include <linux/mii.h>
32#include <linux/crc32.h>
33#include <linux/delay.h>
34#include <linux/spinlock.h>
35#include <linux/in.h>
36#include <linux/ip.h>
37#include <linux/ipv6.h>
38#include <linux/tcp.h>
39#include <linux/udp.h>
40#include <linux/if_vlan.h>
41#include "jme.h"
42
43static int force_pseudohp = -1;
44static int no_pseudohp = -1;
45static int no_extplug = -1;
46module_param(force_pseudohp, int, 0);
47MODULE_PARM_DESC(force_pseudohp,
48 "Enable pseudo hot-plug feature manually by driver instead of BIOS.");
49module_param(no_pseudohp, int, 0);
50MODULE_PARM_DESC(no_pseudohp, "Disable pseudo hot-plug feature.");
51module_param(no_extplug, int, 0);
52MODULE_PARM_DESC(no_extplug,
53 "Do not use external plug signal for pseudo hot-plug.");
54
55static int
56jme_mdio_read(struct net_device *netdev, int phy, int reg)
57{
58 struct jme_adapter *jme = netdev_priv(netdev);
59 int i, val, again = (reg == MII_BMSR) ? 1 : 0;
60
61read_again:
62 jwrite32(jme, JME_SMI, SMI_OP_REQ |
63 smi_phy_addr(phy) |
64 smi_reg_addr(reg));
65
66 wmb();
67 for (i = JME_PHY_TIMEOUT * 50 ; i > 0 ; --i) {
68 udelay(20);
69 val = jread32(jme, JME_SMI);
70 if ((val & SMI_OP_REQ) == 0)
71 break;
72 }
73
74 if (i == 0) {
75 jeprintk(jme->pdev, "phy(%d) read timeout : %d\n", phy, reg);
76 return 0;
77 }
78
79 if (again--)
80 goto read_again;
81
82 return (val & SMI_DATA_MASK) >> SMI_DATA_SHIFT;
83}
84
85static void
86jme_mdio_write(struct net_device *netdev,
87 int phy, int reg, int val)
88{
89 struct jme_adapter *jme = netdev_priv(netdev);
90 int i;
91
92 jwrite32(jme, JME_SMI, SMI_OP_WRITE | SMI_OP_REQ |
93 ((val << SMI_DATA_SHIFT) & SMI_DATA_MASK) |
94 smi_phy_addr(phy) | smi_reg_addr(reg));
95
96 wmb();
97 for (i = JME_PHY_TIMEOUT * 50 ; i > 0 ; --i) {
98 udelay(20);
99 if ((jread32(jme, JME_SMI) & SMI_OP_REQ) == 0)
100 break;
101 }
102
103 if (i == 0)
104 jeprintk(jme->pdev, "phy(%d) write timeout : %d\n", phy, reg);
105
106 return;
107}
108
109static inline void
110jme_reset_phy_processor(struct jme_adapter *jme)
111{
112 u32 val;
113
114 jme_mdio_write(jme->dev,
115 jme->mii_if.phy_id,
116 MII_ADVERTISE, ADVERTISE_ALL |
117 ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
118
119 if (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC250)
120 jme_mdio_write(jme->dev,
121 jme->mii_if.phy_id,
122 MII_CTRL1000,
123 ADVERTISE_1000FULL | ADVERTISE_1000HALF);
124
125 val = jme_mdio_read(jme->dev,
126 jme->mii_if.phy_id,
127 MII_BMCR);
128
129 jme_mdio_write(jme->dev,
130 jme->mii_if.phy_id,
131 MII_BMCR, val | BMCR_RESET);
132
133 return;
134}
135
136static void
137jme_setup_wakeup_frame(struct jme_adapter *jme,
138 u32 *mask, u32 crc, int fnr)
139{
140 int i;
141
142 /*
143 * Setup CRC pattern
144 */
145 jwrite32(jme, JME_WFOI, WFOI_CRC_SEL | (fnr & WFOI_FRAME_SEL));
146 wmb();
147 jwrite32(jme, JME_WFODP, crc);
148 wmb();
149
150 /*
151 * Setup Mask
152 */
153 for (i = 0 ; i < WAKEUP_FRAME_MASK_DWNR ; ++i) {
154 jwrite32(jme, JME_WFOI,
155 ((i << WFOI_MASK_SHIFT) & WFOI_MASK_SEL) |
156 (fnr & WFOI_FRAME_SEL));
157 wmb();
158 jwrite32(jme, JME_WFODP, mask[i]);
159 wmb();
160 }
161}
162
163static inline void
164jme_reset_mac_processor(struct jme_adapter *jme)
165{
166 u32 mask[WAKEUP_FRAME_MASK_DWNR] = {0, 0, 0, 0};
167 u32 crc = 0xCDCDCDCD;
168 u32 gpreg0;
169 int i;
170
171 jwrite32(jme, JME_GHC, jme->reg_ghc | GHC_SWRST);
172 udelay(2);
173 jwrite32(jme, JME_GHC, jme->reg_ghc);
174
175 jwrite32(jme, JME_RXDBA_LO, 0x00000000);
176 jwrite32(jme, JME_RXDBA_HI, 0x00000000);
177 jwrite32(jme, JME_RXQDC, 0x00000000);
178 jwrite32(jme, JME_RXNDA, 0x00000000);
179 jwrite32(jme, JME_TXDBA_LO, 0x00000000);
180 jwrite32(jme, JME_TXDBA_HI, 0x00000000);
181 jwrite32(jme, JME_TXQDC, 0x00000000);
182 jwrite32(jme, JME_TXNDA, 0x00000000);
183
184 jwrite32(jme, JME_RXMCHT_LO, 0x00000000);
185 jwrite32(jme, JME_RXMCHT_HI, 0x00000000);
186 for (i = 0 ; i < WAKEUP_FRAME_NR ; ++i)
187 jme_setup_wakeup_frame(jme, mask, crc, i);
188 if (jme->fpgaver)
189 gpreg0 = GPREG0_DEFAULT | GPREG0_LNKINTPOLL;
190 else
191 gpreg0 = GPREG0_DEFAULT;
192 jwrite32(jme, JME_GPREG0, gpreg0);
193 jwrite32(jme, JME_GPREG1, 0);
194}
195
196static inline void
197jme_reset_ghc_speed(struct jme_adapter *jme)
198{
199 jme->reg_ghc &= ~(GHC_SPEED_1000M | GHC_DPX);
200 jwrite32(jme, JME_GHC, jme->reg_ghc);
201}
202
203static inline void
204jme_clear_pm(struct jme_adapter *jme)
205{
206 jwrite32(jme, JME_PMCS, 0xFFFF0000 | jme->reg_pmcs);
207 pci_set_power_state(jme->pdev, PCI_D0);
208 pci_enable_wake(jme->pdev, PCI_D0, false);
209}
210
211static int
212jme_reload_eeprom(struct jme_adapter *jme)
213{
214 u32 val;
215 int i;
216
217 val = jread32(jme, JME_SMBCSR);
218
219 if (val & SMBCSR_EEPROMD) {
220 val |= SMBCSR_CNACK;
221 jwrite32(jme, JME_SMBCSR, val);
222 val |= SMBCSR_RELOAD;
223 jwrite32(jme, JME_SMBCSR, val);
224 mdelay(12);
225
226 for (i = JME_EEPROM_RELOAD_TIMEOUT; i > 0; --i) {
227 mdelay(1);
228 if ((jread32(jme, JME_SMBCSR) & SMBCSR_RELOAD) == 0)
229 break;
230 }
231
232 if (i == 0) {
233 jeprintk(jme->pdev, "eeprom reload timeout\n");
234 return -EIO;
235 }
236 }
237
238 return 0;
239}
240
241static void
242jme_load_macaddr(struct net_device *netdev)
243{
244 struct jme_adapter *jme = netdev_priv(netdev);
245 unsigned char macaddr[6];
246 u32 val;
247
248 spin_lock_bh(&jme->macaddr_lock);
249 val = jread32(jme, JME_RXUMA_LO);
250 macaddr[0] = (val >> 0) & 0xFF;
251 macaddr[1] = (val >> 8) & 0xFF;
252 macaddr[2] = (val >> 16) & 0xFF;
253 macaddr[3] = (val >> 24) & 0xFF;
254 val = jread32(jme, JME_RXUMA_HI);
255 macaddr[4] = (val >> 0) & 0xFF;
256 macaddr[5] = (val >> 8) & 0xFF;
257 memcpy(netdev->dev_addr, macaddr, 6);
258 spin_unlock_bh(&jme->macaddr_lock);
259}
260
261static inline void
262jme_set_rx_pcc(struct jme_adapter *jme, int p)
263{
264 switch (p) {
265 case PCC_OFF:
266 jwrite32(jme, JME_PCCRX0,
267 ((PCC_OFF_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
268 ((PCC_OFF_CNT << PCCRX_SHIFT) & PCCRX_MASK));
269 break;
270 case PCC_P1:
271 jwrite32(jme, JME_PCCRX0,
272 ((PCC_P1_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
273 ((PCC_P1_CNT << PCCRX_SHIFT) & PCCRX_MASK));
274 break;
275 case PCC_P2:
276 jwrite32(jme, JME_PCCRX0,
277 ((PCC_P2_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
278 ((PCC_P2_CNT << PCCRX_SHIFT) & PCCRX_MASK));
279 break;
280 case PCC_P3:
281 jwrite32(jme, JME_PCCRX0,
282 ((PCC_P3_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
283 ((PCC_P3_CNT << PCCRX_SHIFT) & PCCRX_MASK));
284 break;
285 default:
286 break;
287 }
288 wmb();
289
290 if (!(test_bit(JME_FLAG_POLL, &jme->flags)))
291 msg_rx_status(jme, "Switched to PCC_P%d\n", p);
292}
293
294static void
295jme_start_irq(struct jme_adapter *jme)
296{
297 register struct dynpcc_info *dpi = &(jme->dpi);
298
299 jme_set_rx_pcc(jme, PCC_P1);
300 dpi->cur = PCC_P1;
301 dpi->attempt = PCC_P1;
302 dpi->cnt = 0;
303
304 jwrite32(jme, JME_PCCTX,
305 ((PCC_TX_TO << PCCTXTO_SHIFT) & PCCTXTO_MASK) |
306 ((PCC_TX_CNT << PCCTX_SHIFT) & PCCTX_MASK) |
307 PCCTXQ0_EN
308 );
309
310 /*
311 * Enable Interrupts
312 */
313 jwrite32(jme, JME_IENS, INTR_ENABLE);
314}
315
316static inline void
317jme_stop_irq(struct jme_adapter *jme)
318{
319 /*
320 * Disable Interrupts
321 */
322 jwrite32f(jme, JME_IENC, INTR_ENABLE);
323}
324
325static inline void
326jme_enable_shadow(struct jme_adapter *jme)
327{
328 jwrite32(jme,
329 JME_SHBA_LO,
330 ((u32)jme->shadow_dma & ~((u32)0x1F)) | SHBA_POSTEN);
331}
332
333static inline void
334jme_disable_shadow(struct jme_adapter *jme)
335{
336 jwrite32(jme, JME_SHBA_LO, 0x0);
337}
338
339static u32
340jme_linkstat_from_phy(struct jme_adapter *jme)
341{
342 u32 phylink, bmsr;
343
344 phylink = jme_mdio_read(jme->dev, jme->mii_if.phy_id, 17);
345 bmsr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMSR);
346 if (bmsr & BMSR_ANCOMP)
347 phylink |= PHY_LINK_AUTONEG_COMPLETE;
348
349 return phylink;
350}
351
352static inline void
353jme_set_phyfifoa(struct jme_adapter *jme)
354{
355 jme_mdio_write(jme->dev, jme->mii_if.phy_id, 27, 0x0004);
356}
357
358static inline void
359jme_set_phyfifob(struct jme_adapter *jme)
360{
361 jme_mdio_write(jme->dev, jme->mii_if.phy_id, 27, 0x0000);
362}
363
364static int
365jme_check_link(struct net_device *netdev, int testonly)
366{
367 struct jme_adapter *jme = netdev_priv(netdev);
368 u32 phylink, ghc, cnt = JME_SPDRSV_TIMEOUT, bmcr;
369 char linkmsg[64];
370 int rc = 0;
371
372 linkmsg[0] = '\0';
373
374 if (jme->fpgaver)
375 phylink = jme_linkstat_from_phy(jme);
376 else
377 phylink = jread32(jme, JME_PHY_LINK);
378
379 if (phylink & PHY_LINK_UP) {
380 if (!(phylink & PHY_LINK_AUTONEG_COMPLETE)) {
381 /*
382 * If we did not enable AN
383 * Speed/Duplex Info should be obtained from SMI
384 */
385 phylink = PHY_LINK_UP;
386
387 bmcr = jme_mdio_read(jme->dev,
388 jme->mii_if.phy_id,
389 MII_BMCR);
390
391 phylink |= ((bmcr & BMCR_SPEED1000) &&
392 (bmcr & BMCR_SPEED100) == 0) ?
393 PHY_LINK_SPEED_1000M :
394 (bmcr & BMCR_SPEED100) ?
395 PHY_LINK_SPEED_100M :
396 PHY_LINK_SPEED_10M;
397
398 phylink |= (bmcr & BMCR_FULLDPLX) ?
399 PHY_LINK_DUPLEX : 0;
400
401 strcat(linkmsg, "Forced: ");
402 } else {
403 /*
404 * Keep polling for speed/duplex resolve complete
405 */
406 while (!(phylink & PHY_LINK_SPEEDDPU_RESOLVED) &&
407 --cnt) {
408
409 udelay(1);
410
411 if (jme->fpgaver)
412 phylink = jme_linkstat_from_phy(jme);
413 else
414 phylink = jread32(jme, JME_PHY_LINK);
415 }
416 if (!cnt)
417 jeprintk(jme->pdev,
418 "Waiting speed resolve timeout.\n");
419
420 strcat(linkmsg, "ANed: ");
421 }
422
423 if (jme->phylink == phylink) {
424 rc = 1;
425 goto out;
426 }
427 if (testonly)
428 goto out;
429
430 jme->phylink = phylink;
431
432 ghc = jme->reg_ghc & ~(GHC_SPEED_10M |
433 GHC_SPEED_100M |
434 GHC_SPEED_1000M |
435 GHC_DPX);
436 switch (phylink & PHY_LINK_SPEED_MASK) {
437 case PHY_LINK_SPEED_10M:
438 ghc |= GHC_SPEED_10M;
439 strcat(linkmsg, "10 Mbps, ");
440 if (is_buggy250(jme->pdev->device, jme->chiprev))
441 jme_set_phyfifoa(jme);
442 break;
443 case PHY_LINK_SPEED_100M:
444 ghc |= GHC_SPEED_100M;
445 strcat(linkmsg, "100 Mbps, ");
446 if (is_buggy250(jme->pdev->device, jme->chiprev))
447 jme_set_phyfifob(jme);
448 break;
449 case PHY_LINK_SPEED_1000M:
450 ghc |= GHC_SPEED_1000M;
451 strcat(linkmsg, "1000 Mbps, ");
452 if (is_buggy250(jme->pdev->device, jme->chiprev))
453 jme_set_phyfifoa(jme);
454 break;
455 default:
456 break;
457 }
458 ghc |= (phylink & PHY_LINK_DUPLEX) ? GHC_DPX : 0;
459
460 strcat(linkmsg, (phylink & PHY_LINK_DUPLEX) ?
461 "Full-Duplex, " :
462 "Half-Duplex, ");
463
464 if (phylink & PHY_LINK_MDI_STAT)
465 strcat(linkmsg, "MDI-X");
466 else
467 strcat(linkmsg, "MDI");
468
469 if (phylink & PHY_LINK_DUPLEX) {
470 jwrite32(jme, JME_TXMCS, TXMCS_DEFAULT);
471 } else {
472 jwrite32(jme, JME_TXMCS, TXMCS_DEFAULT |
473 TXMCS_BACKOFF |
474 TXMCS_CARRIERSENSE |
475 TXMCS_COLLISION);
476 jwrite32(jme, JME_TXTRHD, TXTRHD_TXPEN |
477 ((0x2000 << TXTRHD_TXP_SHIFT) & TXTRHD_TXP) |
478 TXTRHD_TXREN |
479 ((8 << TXTRHD_TXRL_SHIFT) & TXTRHD_TXRL));
480 }
481
482 jme->reg_ghc = ghc;
483 jwrite32(jme, JME_GHC, ghc);
484
485 msg_link(jme, "Link is up at %s.\n", linkmsg);
486 netif_carrier_on(netdev);
487 } else {
488 if (testonly)
489 goto out;
490
491 msg_link(jme, "Link is down.\n");
492 jme->phylink = 0;
493 netif_carrier_off(netdev);
494 }
495
496out:
497 return rc;
498}
499
500static int
501jme_setup_tx_resources(struct jme_adapter *jme)
502{
503 struct jme_ring *txring = &(jme->txring[0]);
504
505 txring->alloc = dma_alloc_coherent(&(jme->pdev->dev),
506 TX_RING_ALLOC_SIZE(jme->tx_ring_size),
507 &(txring->dmaalloc),
508 GFP_ATOMIC);
509
510 if (!txring->alloc) {
511 txring->desc = NULL;
512 txring->dmaalloc = 0;
513 txring->dma = 0;
514 return -ENOMEM;
515 }
516
517 /*
518 * 16 Bytes align
519 */
520 txring->desc = (void *)ALIGN((unsigned long)(txring->alloc),
521 RING_DESC_ALIGN);
522 txring->dma = ALIGN(txring->dmaalloc, RING_DESC_ALIGN);
523 txring->next_to_use = 0;
524 atomic_set(&txring->next_to_clean, 0);
525 atomic_set(&txring->nr_free, jme->tx_ring_size);
526
527 /*
528 * Initialize Transmit Descriptors
529 */
530 memset(txring->alloc, 0, TX_RING_ALLOC_SIZE(jme->tx_ring_size));
531 memset(txring->bufinf, 0,
532 sizeof(struct jme_buffer_info) * jme->tx_ring_size);
533
534 return 0;
535}
536
537static void
538jme_free_tx_resources(struct jme_adapter *jme)
539{
540 int i;
541 struct jme_ring *txring = &(jme->txring[0]);
542 struct jme_buffer_info *txbi = txring->bufinf;
543
544 if (txring->alloc) {
545 for (i = 0 ; i < jme->tx_ring_size ; ++i) {
546 txbi = txring->bufinf + i;
547 if (txbi->skb) {
548 dev_kfree_skb(txbi->skb);
549 txbi->skb = NULL;
550 }
551 txbi->mapping = 0;
552 txbi->len = 0;
553 txbi->nr_desc = 0;
554 txbi->start_xmit = 0;
555 }
556
557 dma_free_coherent(&(jme->pdev->dev),
558 TX_RING_ALLOC_SIZE(jme->tx_ring_size),
559 txring->alloc,
560 txring->dmaalloc);
561
562 txring->alloc = NULL;
563 txring->desc = NULL;
564 txring->dmaalloc = 0;
565 txring->dma = 0;
566 }
567 txring->next_to_use = 0;
568 atomic_set(&txring->next_to_clean, 0);
569 atomic_set(&txring->nr_free, 0);
570
571}
572
573static inline void
574jme_enable_tx_engine(struct jme_adapter *jme)
575{
576 /*
577 * Select Queue 0
578 */
579 jwrite32(jme, JME_TXCS, TXCS_DEFAULT | TXCS_SELECT_QUEUE0);
580 wmb();
581
582 /*
583 * Setup TX Queue 0 DMA Bass Address
584 */
585 jwrite32(jme, JME_TXDBA_LO, (__u64)jme->txring[0].dma & 0xFFFFFFFFUL);
586 jwrite32(jme, JME_TXDBA_HI, (__u64)(jme->txring[0].dma) >> 32);
587 jwrite32(jme, JME_TXNDA, (__u64)jme->txring[0].dma & 0xFFFFFFFFUL);
588
589 /*
590 * Setup TX Descptor Count
591 */
592 jwrite32(jme, JME_TXQDC, jme->tx_ring_size);
593
594 /*
595 * Enable TX Engine
596 */
597 wmb();
598 jwrite32(jme, JME_TXCS, jme->reg_txcs |
599 TXCS_SELECT_QUEUE0 |
600 TXCS_ENABLE);
601
602}
603
604static inline void
605jme_restart_tx_engine(struct jme_adapter *jme)
606{
607 /*
608 * Restart TX Engine
609 */
610 jwrite32(jme, JME_TXCS, jme->reg_txcs |
611 TXCS_SELECT_QUEUE0 |
612 TXCS_ENABLE);
613}
614
615static inline void
616jme_disable_tx_engine(struct jme_adapter *jme)
617{
618 int i;
619 u32 val;
620
621 /*
622 * Disable TX Engine
623 */
624 jwrite32(jme, JME_TXCS, jme->reg_txcs | TXCS_SELECT_QUEUE0);
625 wmb();
626
627 val = jread32(jme, JME_TXCS);
628 for (i = JME_TX_DISABLE_TIMEOUT ; (val & TXCS_ENABLE) && i > 0 ; --i) {
629 mdelay(1);
630 val = jread32(jme, JME_TXCS);
631 rmb();
632 }
633
634 if (!i)
635 jeprintk(jme->pdev, "Disable TX engine timeout.\n");
636}
637
638static void
639jme_set_clean_rxdesc(struct jme_adapter *jme, int i)
640{
641 struct jme_ring *rxring = jme->rxring;
642 register struct rxdesc *rxdesc = rxring->desc;
643 struct jme_buffer_info *rxbi = rxring->bufinf;
644 rxdesc += i;
645 rxbi += i;
646
647 rxdesc->dw[0] = 0;
648 rxdesc->dw[1] = 0;
649 rxdesc->desc1.bufaddrh = cpu_to_le32((__u64)rxbi->mapping >> 32);
650 rxdesc->desc1.bufaddrl = cpu_to_le32(
651 (__u64)rxbi->mapping & 0xFFFFFFFFUL);
652 rxdesc->desc1.datalen = cpu_to_le16(rxbi->len);
653 if (jme->dev->features & NETIF_F_HIGHDMA)
654 rxdesc->desc1.flags = RXFLAG_64BIT;
655 wmb();
656 rxdesc->desc1.flags |= RXFLAG_OWN | RXFLAG_INT;
657}
658
659static int
660jme_make_new_rx_buf(struct jme_adapter *jme, int i)
661{
662 struct jme_ring *rxring = &(jme->rxring[0]);
663 struct jme_buffer_info *rxbi = rxring->bufinf + i;
664 struct sk_buff *skb;
665
666 skb = netdev_alloc_skb(jme->dev,
667 jme->dev->mtu + RX_EXTRA_LEN);
668 if (unlikely(!skb))
669 return -ENOMEM;
670
671 rxbi->skb = skb;
672 rxbi->len = skb_tailroom(skb);
673 rxbi->mapping = pci_map_page(jme->pdev,
674 virt_to_page(skb->data),
675 offset_in_page(skb->data),
676 rxbi->len,
677 PCI_DMA_FROMDEVICE);
678
679 return 0;
680}
681
682static void
683jme_free_rx_buf(struct jme_adapter *jme, int i)
684{
685 struct jme_ring *rxring = &(jme->rxring[0]);
686 struct jme_buffer_info *rxbi = rxring->bufinf;
687 rxbi += i;
688
689 if (rxbi->skb) {
690 pci_unmap_page(jme->pdev,
691 rxbi->mapping,
692 rxbi->len,
693 PCI_DMA_FROMDEVICE);
694 dev_kfree_skb(rxbi->skb);
695 rxbi->skb = NULL;
696 rxbi->mapping = 0;
697 rxbi->len = 0;
698 }
699}
700
701static void
702jme_free_rx_resources(struct jme_adapter *jme)
703{
704 int i;
705 struct jme_ring *rxring = &(jme->rxring[0]);
706
707 if (rxring->alloc) {
708 for (i = 0 ; i < jme->rx_ring_size ; ++i)
709 jme_free_rx_buf(jme, i);
710
711 dma_free_coherent(&(jme->pdev->dev),
712 RX_RING_ALLOC_SIZE(jme->rx_ring_size),
713 rxring->alloc,
714 rxring->dmaalloc);
715 rxring->alloc = NULL;
716 rxring->desc = NULL;
717 rxring->dmaalloc = 0;
718 rxring->dma = 0;
719 }
720 rxring->next_to_use = 0;
721 atomic_set(&rxring->next_to_clean, 0);
722}
723
724static int
725jme_setup_rx_resources(struct jme_adapter *jme)
726{
727 int i;
728 struct jme_ring *rxring = &(jme->rxring[0]);
729
730 rxring->alloc = dma_alloc_coherent(&(jme->pdev->dev),
731 RX_RING_ALLOC_SIZE(jme->rx_ring_size),
732 &(rxring->dmaalloc),
733 GFP_ATOMIC);
734 if (!rxring->alloc) {
735 rxring->desc = NULL;
736 rxring->dmaalloc = 0;
737 rxring->dma = 0;
738 return -ENOMEM;
739 }
740
741 /*
742 * 16 Bytes align
743 */
744 rxring->desc = (void *)ALIGN((unsigned long)(rxring->alloc),
745 RING_DESC_ALIGN);
746 rxring->dma = ALIGN(rxring->dmaalloc, RING_DESC_ALIGN);
747 rxring->next_to_use = 0;
748 atomic_set(&rxring->next_to_clean, 0);
749
750 /*
751 * Initiallize Receive Descriptors
752 */
753 for (i = 0 ; i < jme->rx_ring_size ; ++i) {
754 if (unlikely(jme_make_new_rx_buf(jme, i))) {
755 jme_free_rx_resources(jme);
756 return -ENOMEM;
757 }
758
759 jme_set_clean_rxdesc(jme, i);
760 }
761
762 return 0;
763}
764
765static inline void
766jme_enable_rx_engine(struct jme_adapter *jme)
767{
768 /*
769 * Select Queue 0
770 */
771 jwrite32(jme, JME_RXCS, jme->reg_rxcs |
772 RXCS_QUEUESEL_Q0);
773 wmb();
774
775 /*
776 * Setup RX DMA Bass Address
777 */
778 jwrite32(jme, JME_RXDBA_LO, (__u64)jme->rxring[0].dma & 0xFFFFFFFFUL);
779 jwrite32(jme, JME_RXDBA_HI, (__u64)(jme->rxring[0].dma) >> 32);
780 jwrite32(jme, JME_RXNDA, (__u64)jme->rxring[0].dma & 0xFFFFFFFFUL);
781
782 /*
783 * Setup RX Descriptor Count
784 */
785 jwrite32(jme, JME_RXQDC, jme->rx_ring_size);
786
787 /*
788 * Setup Unicast Filter
789 */
790 jme_set_multi(jme->dev);
791
792 /*
793 * Enable RX Engine
794 */
795 wmb();
796 jwrite32(jme, JME_RXCS, jme->reg_rxcs |
797 RXCS_QUEUESEL_Q0 |
798 RXCS_ENABLE |
799 RXCS_QST);
800}
801
802static inline void
803jme_restart_rx_engine(struct jme_adapter *jme)
804{
805 /*
806 * Start RX Engine
807 */
808 jwrite32(jme, JME_RXCS, jme->reg_rxcs |
809 RXCS_QUEUESEL_Q0 |
810 RXCS_ENABLE |
811 RXCS_QST);
812}
813
814static inline void
815jme_disable_rx_engine(struct jme_adapter *jme)
816{
817 int i;
818 u32 val;
819
820 /*
821 * Disable RX Engine
822 */
823 jwrite32(jme, JME_RXCS, jme->reg_rxcs);
824 wmb();
825
826 val = jread32(jme, JME_RXCS);
827 for (i = JME_RX_DISABLE_TIMEOUT ; (val & RXCS_ENABLE) && i > 0 ; --i) {
828 mdelay(1);
829 val = jread32(jme, JME_RXCS);
830 rmb();
831 }
832
833 if (!i)
834 jeprintk(jme->pdev, "Disable RX engine timeout.\n");
835
836}
837
838static int
839jme_rxsum_ok(struct jme_adapter *jme, u16 flags)
840{
841 if (!(flags & (RXWBFLAG_TCPON | RXWBFLAG_UDPON | RXWBFLAG_IPV4)))
842 return false;
843
844 if (unlikely(!(flags & RXWBFLAG_MF) &&
845 (flags & RXWBFLAG_TCPON) && !(flags & RXWBFLAG_TCPCS))) {
846 msg_rx_err(jme, "TCP Checksum error.\n");
847 goto out_sumerr;
848 }
849
850 if (unlikely(!(flags & RXWBFLAG_MF) &&
851 (flags & RXWBFLAG_UDPON) && !(flags & RXWBFLAG_UDPCS))) {
852 msg_rx_err(jme, "UDP Checksum error.\n");
853 goto out_sumerr;
854 }
855
856 if (unlikely((flags & RXWBFLAG_IPV4) && !(flags & RXWBFLAG_IPCS))) {
857 msg_rx_err(jme, "IPv4 Checksum error.\n");
858 goto out_sumerr;
859 }
860
861 return true;
862
863out_sumerr:
864 return false;
865}
866
867static void
868jme_alloc_and_feed_skb(struct jme_adapter *jme, int idx)
869{
870 struct jme_ring *rxring = &(jme->rxring[0]);
871 struct rxdesc *rxdesc = rxring->desc;
872 struct jme_buffer_info *rxbi = rxring->bufinf;
873 struct sk_buff *skb;
874 int framesize;
875
876 rxdesc += idx;
877 rxbi += idx;
878
879 skb = rxbi->skb;
880 pci_dma_sync_single_for_cpu(jme->pdev,
881 rxbi->mapping,
882 rxbi->len,
883 PCI_DMA_FROMDEVICE);
884
885 if (unlikely(jme_make_new_rx_buf(jme, idx))) {
886 pci_dma_sync_single_for_device(jme->pdev,
887 rxbi->mapping,
888 rxbi->len,
889 PCI_DMA_FROMDEVICE);
890
891 ++(NET_STAT(jme).rx_dropped);
892 } else {
893 framesize = le16_to_cpu(rxdesc->descwb.framesize)
894 - RX_PREPAD_SIZE;
895
896 skb_reserve(skb, RX_PREPAD_SIZE);
897 skb_put(skb, framesize);
898 skb->protocol = eth_type_trans(skb, jme->dev);
899
900 if (jme_rxsum_ok(jme, rxdesc->descwb.flags))
901 skb->ip_summed = CHECKSUM_UNNECESSARY;
902 else
903 skb->ip_summed = CHECKSUM_NONE;
904
905 if (rxdesc->descwb.flags & RXWBFLAG_TAGON) {
906 if (jme->vlgrp) {
907 jme->jme_vlan_rx(skb, jme->vlgrp,
908 le32_to_cpu(rxdesc->descwb.vlan));
909 NET_STAT(jme).rx_bytes += 4;
910 }
911 } else {
912 jme->jme_rx(skb);
913 }
914
915 if ((le16_to_cpu(rxdesc->descwb.flags) & RXWBFLAG_DEST) ==
916 RXWBFLAG_DEST_MUL)
917 ++(NET_STAT(jme).multicast);
918
919 jme->dev->last_rx = jiffies;
920 NET_STAT(jme).rx_bytes += framesize;
921 ++(NET_STAT(jme).rx_packets);
922 }
923
924 jme_set_clean_rxdesc(jme, idx);
925
926}
927
928static int
929jme_process_receive(struct jme_adapter *jme, int limit)
930{
931 struct jme_ring *rxring = &(jme->rxring[0]);
932 struct rxdesc *rxdesc = rxring->desc;
933 int i, j, ccnt, desccnt, mask = jme->rx_ring_mask;
934
935 if (unlikely(!atomic_dec_and_test(&jme->rx_cleaning)))
936 goto out_inc;
937
938 if (unlikely(atomic_read(&jme->link_changing) != 1))
939 goto out_inc;
940
941 if (unlikely(!netif_carrier_ok(jme->dev)))
942 goto out_inc;
943
944 i = atomic_read(&rxring->next_to_clean);
945 while (limit-- > 0) {
946 rxdesc = rxring->desc;
947 rxdesc += i;
948
949 if ((rxdesc->descwb.flags & RXWBFLAG_OWN) ||
950 !(rxdesc->descwb.desccnt & RXWBDCNT_WBCPL))
951 goto out;
952
953 desccnt = rxdesc->descwb.desccnt & RXWBDCNT_DCNT;
954
955 if (unlikely(desccnt > 1 ||
956 rxdesc->descwb.errstat & RXWBERR_ALLERR)) {
957
958 if (rxdesc->descwb.errstat & RXWBERR_CRCERR)
959 ++(NET_STAT(jme).rx_crc_errors);
960 else if (rxdesc->descwb.errstat & RXWBERR_OVERUN)
961 ++(NET_STAT(jme).rx_fifo_errors);
962 else
963 ++(NET_STAT(jme).rx_errors);
964
965 if (desccnt > 1)
966 limit -= desccnt - 1;
967
968 for (j = i, ccnt = desccnt ; ccnt-- ; ) {
969 jme_set_clean_rxdesc(jme, j);
970 j = (j + 1) & (mask);
971 }
972
973 } else {
974 jme_alloc_and_feed_skb(jme, i);
975 }
976
977 i = (i + desccnt) & (mask);
978 }
979
980out:
981 atomic_set(&rxring->next_to_clean, i);
982
983out_inc:
984 atomic_inc(&jme->rx_cleaning);
985
986 return limit > 0 ? limit : 0;
987
988}
989
990static void
991jme_attempt_pcc(struct dynpcc_info *dpi, int atmp)
992{
993 if (likely(atmp == dpi->cur)) {
994 dpi->cnt = 0;
995 return;
996 }
997
998 if (dpi->attempt == atmp) {
999 ++(dpi->cnt);
1000 } else {
1001 dpi->attempt = atmp;
1002 dpi->cnt = 0;
1003 }
1004
1005}
1006
1007static void
1008jme_dynamic_pcc(struct jme_adapter *jme)
1009{
1010 register struct dynpcc_info *dpi = &(jme->dpi);
1011
1012 if ((NET_STAT(jme).rx_bytes - dpi->last_bytes) > PCC_P3_THRESHOLD)
1013 jme_attempt_pcc(dpi, PCC_P3);
1014 else if ((NET_STAT(jme).rx_packets - dpi->last_pkts) > PCC_P2_THRESHOLD
1015 || dpi->intr_cnt > PCC_INTR_THRESHOLD)
1016 jme_attempt_pcc(dpi, PCC_P2);
1017 else
1018 jme_attempt_pcc(dpi, PCC_P1);
1019
1020 if (unlikely(dpi->attempt != dpi->cur && dpi->cnt > 5)) {
1021 if (dpi->attempt < dpi->cur)
1022 tasklet_schedule(&jme->rxclean_task);
1023 jme_set_rx_pcc(jme, dpi->attempt);
1024 dpi->cur = dpi->attempt;
1025 dpi->cnt = 0;
1026 }
1027}
1028
1029static void
1030jme_start_pcc_timer(struct jme_adapter *jme)
1031{
1032 struct dynpcc_info *dpi = &(jme->dpi);
1033 dpi->last_bytes = NET_STAT(jme).rx_bytes;
1034 dpi->last_pkts = NET_STAT(jme).rx_packets;
1035 dpi->intr_cnt = 0;
1036 jwrite32(jme, JME_TMCSR,
1037 TMCSR_EN | ((0xFFFFFF - PCC_INTERVAL_US) & TMCSR_CNT));
1038}
1039
1040static inline void
1041jme_stop_pcc_timer(struct jme_adapter *jme)
1042{
1043 jwrite32(jme, JME_TMCSR, 0);
1044}
1045
1046static void
1047jme_shutdown_nic(struct jme_adapter *jme)
1048{
1049 u32 phylink;
1050
1051 phylink = jme_linkstat_from_phy(jme);
1052
1053 if (!(phylink & PHY_LINK_UP)) {
1054 /*
1055 * Disable all interrupt before issue timer
1056 */
1057 jme_stop_irq(jme);
1058 jwrite32(jme, JME_TIMER2, TMCSR_EN | 0xFFFFFE);
1059 }
1060}
1061
1062static void
1063jme_pcc_tasklet(unsigned long arg)
1064{
1065 struct jme_adapter *jme = (struct jme_adapter *)arg;
1066 struct net_device *netdev = jme->dev;
1067
1068 if (unlikely(test_bit(JME_FLAG_SHUTDOWN, &jme->flags))) {
1069 jme_shutdown_nic(jme);
1070 return;
1071 }
1072
1073 if (unlikely(!netif_carrier_ok(netdev) ||
1074 (atomic_read(&jme->link_changing) != 1)
1075 )) {
1076 jme_stop_pcc_timer(jme);
1077 return;
1078 }
1079
1080 if (!(test_bit(JME_FLAG_POLL, &jme->flags)))
1081 jme_dynamic_pcc(jme);
1082
1083 jme_start_pcc_timer(jme);
1084}
1085
1086static inline void
1087jme_polling_mode(struct jme_adapter *jme)
1088{
1089 jme_set_rx_pcc(jme, PCC_OFF);
1090}
1091
1092static inline void
1093jme_interrupt_mode(struct jme_adapter *jme)
1094{
1095 jme_set_rx_pcc(jme, PCC_P1);
1096}
1097
1098static inline int
1099jme_pseudo_hotplug_enabled(struct jme_adapter *jme)
1100{
1101 u32 apmc;
1102 apmc = jread32(jme, JME_APMC);
1103 return apmc & JME_APMC_PSEUDO_HP_EN;
1104}
1105
1106static void
1107jme_start_shutdown_timer(struct jme_adapter *jme)
1108{
1109 u32 apmc;
1110
1111 apmc = jread32(jme, JME_APMC) | JME_APMC_PCIE_SD_EN;
1112 apmc &= ~JME_APMC_EPIEN_CTRL;
1113 if (!no_extplug) {
1114 jwrite32f(jme, JME_APMC, apmc | JME_APMC_EPIEN_CTRL_EN);
1115 wmb();
1116 }
1117 jwrite32f(jme, JME_APMC, apmc);
1118
1119 jwrite32f(jme, JME_TIMER2, 0);
1120 set_bit(JME_FLAG_SHUTDOWN, &jme->flags);
1121 jwrite32(jme, JME_TMCSR,
1122 TMCSR_EN | ((0xFFFFFF - APMC_PHP_SHUTDOWN_DELAY) & TMCSR_CNT));
1123}
1124
1125static void
1126jme_stop_shutdown_timer(struct jme_adapter *jme)
1127{
1128 u32 apmc;
1129
1130 jwrite32f(jme, JME_TMCSR, 0);
1131 jwrite32f(jme, JME_TIMER2, 0);
1132 clear_bit(JME_FLAG_SHUTDOWN, &jme->flags);
1133
1134 apmc = jread32(jme, JME_APMC);
1135 apmc &= ~(JME_APMC_PCIE_SD_EN | JME_APMC_EPIEN_CTRL);
1136 jwrite32f(jme, JME_APMC, apmc | JME_APMC_EPIEN_CTRL_DIS);
1137 wmb();
1138 jwrite32f(jme, JME_APMC, apmc);
1139}
1140
1141static void
1142jme_link_change_tasklet(unsigned long arg)
1143{
1144 struct jme_adapter *jme = (struct jme_adapter *)arg;
1145 struct net_device *netdev = jme->dev;
1146 int rc;
1147
1148 while (!atomic_dec_and_test(&jme->link_changing)) {
1149 atomic_inc(&jme->link_changing);
1150 msg_intr(jme, "Get link change lock failed.\n");
1151 while (atomic_read(&jme->link_changing) != 1)
1152 msg_intr(jme, "Waiting link change lock.\n");
1153 }
1154
1155 if (jme_check_link(netdev, 1) && jme->old_mtu == netdev->mtu)
1156 goto out;
1157
1158 jme->old_mtu = netdev->mtu;
1159 netif_stop_queue(netdev);
1160 if (jme_pseudo_hotplug_enabled(jme))
1161 jme_stop_shutdown_timer(jme);
1162
1163 jme_stop_pcc_timer(jme);
1164 tasklet_disable(&jme->txclean_task);
1165 tasklet_disable(&jme->rxclean_task);
1166 tasklet_disable(&jme->rxempty_task);
1167
1168 if (netif_carrier_ok(netdev)) {
1169 jme_reset_ghc_speed(jme);
1170 jme_disable_rx_engine(jme);
1171 jme_disable_tx_engine(jme);
1172 jme_reset_mac_processor(jme);
1173 jme_free_rx_resources(jme);
1174 jme_free_tx_resources(jme);
1175
1176 if (test_bit(JME_FLAG_POLL, &jme->flags))
1177 jme_polling_mode(jme);
1178
1179 netif_carrier_off(netdev);
1180 }
1181
1182 jme_check_link(netdev, 0);
1183 if (netif_carrier_ok(netdev)) {
1184 rc = jme_setup_rx_resources(jme);
1185 if (rc) {
1186 jeprintk(jme->pdev, "Allocating resources for RX error"
1187 ", Device STOPPED!\n");
1188 goto out_enable_tasklet;
1189 }
1190
1191 rc = jme_setup_tx_resources(jme);
1192 if (rc) {
1193 jeprintk(jme->pdev, "Allocating resources for TX error"
1194 ", Device STOPPED!\n");
1195 goto err_out_free_rx_resources;
1196 }
1197
1198 jme_enable_rx_engine(jme);
1199 jme_enable_tx_engine(jme);
1200
1201 netif_start_queue(netdev);
1202
1203 if (test_bit(JME_FLAG_POLL, &jme->flags))
1204 jme_interrupt_mode(jme);
1205
1206 jme_start_pcc_timer(jme);
1207 } else if (jme_pseudo_hotplug_enabled(jme)) {
1208 jme_start_shutdown_timer(jme);
1209 }
1210
1211 goto out_enable_tasklet;
1212
1213err_out_free_rx_resources:
1214 jme_free_rx_resources(jme);
1215out_enable_tasklet:
1216 tasklet_enable(&jme->txclean_task);
1217 tasklet_hi_enable(&jme->rxclean_task);
1218 tasklet_hi_enable(&jme->rxempty_task);
1219out:
1220 atomic_inc(&jme->link_changing);
1221}
1222
1223static void
1224jme_rx_clean_tasklet(unsigned long arg)
1225{
1226 struct jme_adapter *jme = (struct jme_adapter *)arg;
1227 struct dynpcc_info *dpi = &(jme->dpi);
1228
1229 jme_process_receive(jme, jme->rx_ring_size);
1230 ++(dpi->intr_cnt);
1231
1232}
1233
1234static int
1235jme_poll(JME_NAPI_HOLDER(holder), JME_NAPI_WEIGHT(budget))
1236{
1237 struct jme_adapter *jme = jme_napi_priv(holder);
1238 struct net_device *netdev = jme->dev;
1239 int rest;
1240
1241 rest = jme_process_receive(jme, JME_NAPI_WEIGHT_VAL(budget));
1242
1243 while (atomic_read(&jme->rx_empty) > 0) {
1244 atomic_dec(&jme->rx_empty);
1245 ++(NET_STAT(jme).rx_dropped);
1246 jme_restart_rx_engine(jme);
1247 }
1248 atomic_inc(&jme->rx_empty);
1249
1250 if (rest) {
1251 JME_RX_COMPLETE(netdev, holder);
1252 jme_interrupt_mode(jme);
1253 }
1254
1255 JME_NAPI_WEIGHT_SET(budget, rest);
1256 return JME_NAPI_WEIGHT_VAL(budget) - rest;
1257}
1258
1259static void
1260jme_rx_empty_tasklet(unsigned long arg)
1261{
1262 struct jme_adapter *jme = (struct jme_adapter *)arg;
1263
1264 if (unlikely(atomic_read(&jme->link_changing) != 1))
1265 return;
1266
1267 if (unlikely(!netif_carrier_ok(jme->dev)))
1268 return;
1269
1270 msg_rx_status(jme, "RX Queue Full!\n");
1271
1272 jme_rx_clean_tasklet(arg);
1273
1274 while (atomic_read(&jme->rx_empty) > 0) {
1275 atomic_dec(&jme->rx_empty);
1276 ++(NET_STAT(jme).rx_dropped);
1277 jme_restart_rx_engine(jme);
1278 }
1279 atomic_inc(&jme->rx_empty);
1280}
1281
1282static void
1283jme_wake_queue_if_stopped(struct jme_adapter *jme)
1284{
1285 struct jme_ring *txring = jme->txring;
1286
1287 smp_wmb();
1288 if (unlikely(netif_queue_stopped(jme->dev) &&
1289 atomic_read(&txring->nr_free) >= (jme->tx_wake_threshold))) {
1290 msg_tx_done(jme, "TX Queue Waked.\n");
1291 netif_wake_queue(jme->dev);
1292 }
1293
1294}
1295
1296static void
1297jme_tx_clean_tasklet(unsigned long arg)
1298{
1299 struct jme_adapter *jme = (struct jme_adapter *)arg;
1300 struct jme_ring *txring = &(jme->txring[0]);
1301 struct txdesc *txdesc = txring->desc;
1302 struct jme_buffer_info *txbi = txring->bufinf, *ctxbi, *ttxbi;
1303 int i, j, cnt = 0, max, err, mask;
1304
1305 tx_dbg(jme, "Into txclean.\n");
1306
1307 if (unlikely(!atomic_dec_and_test(&jme->tx_cleaning)))
1308 goto out;
1309
1310 if (unlikely(atomic_read(&jme->link_changing) != 1))
1311 goto out;
1312
1313 if (unlikely(!netif_carrier_ok(jme->dev)))
1314 goto out;
1315
1316 max = jme->tx_ring_size - atomic_read(&txring->nr_free);
1317 mask = jme->tx_ring_mask;
1318
1319 for (i = atomic_read(&txring->next_to_clean) ; cnt < max ; ) {
1320
1321 ctxbi = txbi + i;
1322
1323 if (likely(ctxbi->skb &&
1324 !(txdesc[i].descwb.flags & TXWBFLAG_OWN))) {
1325
1326 tx_dbg(jme, "txclean: %d+%d@%lu\n",
1327 i, ctxbi->nr_desc, jiffies);
1328
1329 err = txdesc[i].descwb.flags & TXWBFLAG_ALLERR;
1330
1331 for (j = 1 ; j < ctxbi->nr_desc ; ++j) {
1332 ttxbi = txbi + ((i + j) & (mask));
1333 txdesc[(i + j) & (mask)].dw[0] = 0;
1334
1335 pci_unmap_page(jme->pdev,
1336 ttxbi->mapping,
1337 ttxbi->len,
1338 PCI_DMA_TODEVICE);
1339
1340 ttxbi->mapping = 0;
1341 ttxbi->len = 0;
1342 }
1343
1344 dev_kfree_skb(ctxbi->skb);
1345
1346 cnt += ctxbi->nr_desc;
1347
1348 if (unlikely(err)) {
1349 ++(NET_STAT(jme).tx_carrier_errors);
1350 } else {
1351 ++(NET_STAT(jme).tx_packets);
1352 NET_STAT(jme).tx_bytes += ctxbi->len;
1353 }
1354
1355 ctxbi->skb = NULL;
1356 ctxbi->len = 0;
1357 ctxbi->start_xmit = 0;
1358
1359 } else {
1360 break;
1361 }
1362
1363 i = (i + ctxbi->nr_desc) & mask;
1364
1365 ctxbi->nr_desc = 0;
1366 }
1367
1368 tx_dbg(jme, "txclean: done %d@%lu.\n", i, jiffies);
1369 atomic_set(&txring->next_to_clean, i);
1370 atomic_add(cnt, &txring->nr_free);
1371
1372 jme_wake_queue_if_stopped(jme);
1373
1374out:
1375 atomic_inc(&jme->tx_cleaning);
1376}
1377
1378static void
1379jme_intr_msi(struct jme_adapter *jme, u32 intrstat)
1380{
1381 /*
1382 * Disable interrupt
1383 */
1384 jwrite32f(jme, JME_IENC, INTR_ENABLE);
1385
1386 if (intrstat & (INTR_LINKCH | INTR_SWINTR)) {
1387 /*
1388 * Link change event is critical
1389 * all other events are ignored
1390 */
1391 jwrite32(jme, JME_IEVE, intrstat);
1392 tasklet_schedule(&jme->linkch_task);
1393 goto out_reenable;
1394 }
1395
1396 if (intrstat & INTR_TMINTR) {
1397 jwrite32(jme, JME_IEVE, INTR_TMINTR);
1398 tasklet_schedule(&jme->pcc_task);
1399 }
1400
1401 if (intrstat & (INTR_PCCTXTO | INTR_PCCTX)) {
1402 jwrite32(jme, JME_IEVE, INTR_PCCTXTO | INTR_PCCTX | INTR_TX0);
1403 tasklet_schedule(&jme->txclean_task);
1404 }
1405
1406 if ((intrstat & (INTR_PCCRX0TO | INTR_PCCRX0 | INTR_RX0EMP))) {
1407 jwrite32(jme, JME_IEVE, (intrstat & (INTR_PCCRX0TO |
1408 INTR_PCCRX0 |
1409 INTR_RX0EMP)) |
1410 INTR_RX0);
1411 }
1412
1413 if (test_bit(JME_FLAG_POLL, &jme->flags)) {
1414 if (intrstat & INTR_RX0EMP)
1415 atomic_inc(&jme->rx_empty);
1416
1417 if ((intrstat & (INTR_PCCRX0TO | INTR_PCCRX0 | INTR_RX0EMP))) {
1418 if (likely(JME_RX_SCHEDULE_PREP(jme))) {
1419 jme_polling_mode(jme);
1420 JME_RX_SCHEDULE(jme);
1421 }
1422 }
1423 } else {
1424 if (intrstat & INTR_RX0EMP) {
1425 atomic_inc(&jme->rx_empty);
1426 tasklet_hi_schedule(&jme->rxempty_task);
1427 } else if (intrstat & (INTR_PCCRX0TO | INTR_PCCRX0)) {
1428 tasklet_hi_schedule(&jme->rxclean_task);
1429 }
1430 }
1431
1432out_reenable:
1433 /*
1434 * Re-enable interrupt
1435 */
1436 jwrite32f(jme, JME_IENS, INTR_ENABLE);
1437}
1438
1439static irqreturn_t
1440jme_intr(int irq, void *dev_id)
1441{
1442 struct net_device *netdev = dev_id;
1443 struct jme_adapter *jme = netdev_priv(netdev);
1444 u32 intrstat;
1445
1446 intrstat = jread32(jme, JME_IEVE);
1447
1448 /*
1449 * Check if it's really an interrupt for us
1450 */
1451 if (unlikely(intrstat == 0))
1452 return IRQ_NONE;
1453
1454 /*
1455 * Check if the device still exist
1456 */
1457 if (unlikely(intrstat == ~((typeof(intrstat))0)))
1458 return IRQ_NONE;
1459
1460 jme_intr_msi(jme, intrstat);
1461
1462 return IRQ_HANDLED;
1463}
1464
1465static irqreturn_t
1466jme_msi(int irq, void *dev_id)
1467{
1468 struct net_device *netdev = dev_id;
1469 struct jme_adapter *jme = netdev_priv(netdev);
1470 u32 intrstat;
1471
1472 pci_dma_sync_single_for_cpu(jme->pdev,
1473 jme->shadow_dma,
1474 sizeof(u32) * SHADOW_REG_NR,
1475 PCI_DMA_FROMDEVICE);
1476 intrstat = jme->shadow_regs[SHADOW_IEVE];
1477 jme->shadow_regs[SHADOW_IEVE] = 0;
1478
1479 jme_intr_msi(jme, intrstat);
1480
1481 return IRQ_HANDLED;
1482}
1483
1484static void
1485jme_reset_link(struct jme_adapter *jme)
1486{
1487 jwrite32(jme, JME_TMCSR, TMCSR_SWIT);
1488}
1489
1490static void
1491jme_restart_an(struct jme_adapter *jme)
1492{
1493 u32 bmcr;
1494
1495 spin_lock_bh(&jme->phy_lock);
1496 bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1497 bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
1498 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr);
1499 spin_unlock_bh(&jme->phy_lock);
1500}
1501
1502static int
1503jme_request_irq(struct jme_adapter *jme)
1504{
1505 int rc;
1506 struct net_device *netdev = jme->dev;
1507 irq_handler_t handler = jme_intr;
1508 int irq_flags = IRQF_SHARED;
1509
1510 if (!pci_enable_msi(jme->pdev)) {
1511 set_bit(JME_FLAG_MSI, &jme->flags);
1512 handler = jme_msi;
1513 irq_flags = 0;
1514 }
1515
1516 rc = request_irq(jme->pdev->irq, handler, irq_flags, netdev->name,
1517 netdev);
1518 if (rc) {
1519 jeprintk(jme->pdev,
1520 "Unable to request %s interrupt (return: %d)\n",
1521 test_bit(JME_FLAG_MSI, &jme->flags) ? "MSI" : "INTx",
1522 rc);
1523
1524 if (test_bit(JME_FLAG_MSI, &jme->flags)) {
1525 pci_disable_msi(jme->pdev);
1526 clear_bit(JME_FLAG_MSI, &jme->flags);
1527 }
1528 } else {
1529 netdev->irq = jme->pdev->irq;
1530 }
1531
1532 return rc;
1533}
1534
1535static void
1536jme_free_irq(struct jme_adapter *jme)
1537{
1538 free_irq(jme->pdev->irq, jme->dev);
1539 if (test_bit(JME_FLAG_MSI, &jme->flags)) {
1540 pci_disable_msi(jme->pdev);
1541 clear_bit(JME_FLAG_MSI, &jme->flags);
1542 jme->dev->irq = jme->pdev->irq;
1543 }
1544}
1545
1546static int
1547jme_open(struct net_device *netdev)
1548{
1549 struct jme_adapter *jme = netdev_priv(netdev);
1550 int rc;
1551
1552 jme_clear_pm(jme);
1553 JME_NAPI_ENABLE(jme);
1554
1555 tasklet_enable(&jme->txclean_task);
1556 tasklet_hi_enable(&jme->rxclean_task);
1557 tasklet_hi_enable(&jme->rxempty_task);
1558
1559 rc = jme_request_irq(jme);
1560 if (rc)
1561 goto err_out;
1562
1563 jme_enable_shadow(jme);
1564 jme_start_irq(jme);
1565
1566 if (test_bit(JME_FLAG_SSET, &jme->flags))
1567 jme_set_settings(netdev, &jme->old_ecmd);
1568 else
1569 jme_reset_phy_processor(jme);
1570
1571 jme_reset_link(jme);
1572
1573 return 0;
1574
1575err_out:
1576 netif_stop_queue(netdev);
1577 netif_carrier_off(netdev);
1578 return rc;
1579}
1580
1581static void
1582jme_set_100m_half(struct jme_adapter *jme)
1583{
1584 u32 bmcr, tmp;
1585
1586 bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1587 tmp = bmcr & ~(BMCR_ANENABLE | BMCR_SPEED100 |
1588 BMCR_SPEED1000 | BMCR_FULLDPLX);
1589 tmp |= BMCR_SPEED100;
1590
1591 if (bmcr != tmp)
1592 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, tmp);
1593
1594 if (jme->fpgaver)
1595 jwrite32(jme, JME_GHC, GHC_SPEED_100M | GHC_LINK_POLL);
1596 else
1597 jwrite32(jme, JME_GHC, GHC_SPEED_100M);
1598}
1599
1600#define JME_WAIT_LINK_TIME 2000 /* 2000ms */
1601static void
1602jme_wait_link(struct jme_adapter *jme)
1603{
1604 u32 phylink, to = JME_WAIT_LINK_TIME;
1605
1606 mdelay(1000);
1607 phylink = jme_linkstat_from_phy(jme);
1608 while (!(phylink & PHY_LINK_UP) && (to -= 10) > 0) {
1609 mdelay(10);
1610 phylink = jme_linkstat_from_phy(jme);
1611 }
1612}
1613
1614static inline void
1615jme_phy_off(struct jme_adapter *jme)
1616{
1617 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, BMCR_PDOWN);
1618}
1619
1620static int
1621jme_close(struct net_device *netdev)
1622{
1623 struct jme_adapter *jme = netdev_priv(netdev);
1624
1625 netif_stop_queue(netdev);
1626 netif_carrier_off(netdev);
1627
1628 jme_stop_irq(jme);
1629 jme_disable_shadow(jme);
1630 jme_free_irq(jme);
1631
1632 JME_NAPI_DISABLE(jme);
1633
1634 tasklet_kill(&jme->linkch_task);
1635 tasklet_kill(&jme->txclean_task);
1636 tasklet_kill(&jme->rxclean_task);
1637 tasklet_kill(&jme->rxempty_task);
1638
1639 jme_reset_ghc_speed(jme);
1640 jme_disable_rx_engine(jme);
1641 jme_disable_tx_engine(jme);
1642 jme_reset_mac_processor(jme);
1643 jme_free_rx_resources(jme);
1644 jme_free_tx_resources(jme);
1645 jme->phylink = 0;
1646 jme_phy_off(jme);
1647
1648 return 0;
1649}
1650
1651static int
1652jme_alloc_txdesc(struct jme_adapter *jme,
1653 struct sk_buff *skb)
1654{
1655 struct jme_ring *txring = jme->txring;
1656 int idx, nr_alloc, mask = jme->tx_ring_mask;
1657
1658 idx = txring->next_to_use;
1659 nr_alloc = skb_shinfo(skb)->nr_frags + 2;
1660
1661 if (unlikely(atomic_read(&txring->nr_free) < nr_alloc))
1662 return -1;
1663
1664 atomic_sub(nr_alloc, &txring->nr_free);
1665
1666 txring->next_to_use = (txring->next_to_use + nr_alloc) & mask;
1667
1668 return idx;
1669}
1670
1671static void
1672jme_fill_tx_map(struct pci_dev *pdev,
1673 struct txdesc *txdesc,
1674 struct jme_buffer_info *txbi,
1675 struct page *page,
1676 u32 page_offset,
1677 u32 len,
1678 u8 hidma)
1679{
1680 dma_addr_t dmaaddr;
1681
1682 dmaaddr = pci_map_page(pdev,
1683 page,
1684 page_offset,
1685 len,
1686 PCI_DMA_TODEVICE);
1687
1688 pci_dma_sync_single_for_device(pdev,
1689 dmaaddr,
1690 len,
1691 PCI_DMA_TODEVICE);
1692
1693 txdesc->dw[0] = 0;
1694 txdesc->dw[1] = 0;
1695 txdesc->desc2.flags = TXFLAG_OWN;
1696 txdesc->desc2.flags |= (hidma) ? TXFLAG_64BIT : 0;
1697 txdesc->desc2.datalen = cpu_to_le16(len);
1698 txdesc->desc2.bufaddrh = cpu_to_le32((__u64)dmaaddr >> 32);
1699 txdesc->desc2.bufaddrl = cpu_to_le32(
1700 (__u64)dmaaddr & 0xFFFFFFFFUL);
1701
1702 txbi->mapping = dmaaddr;
1703 txbi->len = len;
1704}
1705
1706static void
1707jme_map_tx_skb(struct jme_adapter *jme, struct sk_buff *skb, int idx)
1708{
1709 struct jme_ring *txring = jme->txring;
1710 struct txdesc *txdesc = txring->desc, *ctxdesc;
1711 struct jme_buffer_info *txbi = txring->bufinf, *ctxbi;
1712 u8 hidma = jme->dev->features & NETIF_F_HIGHDMA;
1713 int i, nr_frags = skb_shinfo(skb)->nr_frags;
1714 int mask = jme->tx_ring_mask;
1715 struct skb_frag_struct *frag;
1716 u32 len;
1717
1718 for (i = 0 ; i < nr_frags ; ++i) {
1719 frag = &skb_shinfo(skb)->frags[i];
1720 ctxdesc = txdesc + ((idx + i + 2) & (mask));
1721 ctxbi = txbi + ((idx + i + 2) & (mask));
1722
1723 jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi, frag->page,
1724 frag->page_offset, frag->size, hidma);
1725 }
1726
1727 len = skb_is_nonlinear(skb) ? skb_headlen(skb) : skb->len;
1728 ctxdesc = txdesc + ((idx + 1) & (mask));
1729 ctxbi = txbi + ((idx + 1) & (mask));
1730 jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi, virt_to_page(skb->data),
1731 offset_in_page(skb->data), len, hidma);
1732
1733}
1734
1735static int
1736jme_expand_header(struct jme_adapter *jme, struct sk_buff *skb)
1737{
1738 if (unlikely(skb_shinfo(skb)->gso_size &&
1739 skb_header_cloned(skb) &&
1740 pskb_expand_head(skb, 0, 0, GFP_ATOMIC))) {
1741 dev_kfree_skb(skb);
1742 return -1;
1743 }
1744
1745 return 0;
1746}
1747
1748static int
1749jme_tx_tso(struct sk_buff *skb,
1750 u16 *mss, u8 *flags)
1751{
1752 *mss = skb_shinfo(skb)->gso_size << TXDESC_MSS_SHIFT;
1753 if (*mss) {
1754 *flags |= TXFLAG_LSEN;
1755
1756 if (skb->protocol == htons(ETH_P_IP)) {
1757 struct iphdr *iph = ip_hdr(skb);
1758
1759 iph->check = 0;
1760 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
1761 iph->daddr, 0,
1762 IPPROTO_TCP,
1763 0);
1764 } else {
1765 struct ipv6hdr *ip6h = ipv6_hdr(skb);
1766
1767 tcp_hdr(skb)->check = ~csum_ipv6_magic(&ip6h->saddr,
1768 &ip6h->daddr, 0,
1769 IPPROTO_TCP,
1770 0);
1771 }
1772
1773 return 0;
1774 }
1775
1776 return 1;
1777}
1778
1779static void
1780jme_tx_csum(struct jme_adapter *jme, struct sk_buff *skb, u8 *flags)
1781{
1782 if (skb->ip_summed == CHECKSUM_PARTIAL) {
1783 u8 ip_proto;
1784
1785 switch (skb->protocol) {
1786 case htons(ETH_P_IP):
1787 ip_proto = ip_hdr(skb)->protocol;
1788 break;
1789 case htons(ETH_P_IPV6):
1790 ip_proto = ipv6_hdr(skb)->nexthdr;
1791 break;
1792 default:
1793 ip_proto = 0;
1794 break;
1795 }
1796
1797 switch (ip_proto) {
1798 case IPPROTO_TCP:
1799 *flags |= TXFLAG_TCPCS;
1800 break;
1801 case IPPROTO_UDP:
1802 *flags |= TXFLAG_UDPCS;
1803 break;
1804 default:
1805 msg_tx_err(jme, "Error upper layer protocol.\n");
1806 break;
1807 }
1808 }
1809}
1810
1811static inline void
1812jme_tx_vlan(struct sk_buff *skb, u16 *vlan, u8 *flags)
1813{
1814 if (vlan_tx_tag_present(skb)) {
1815 *flags |= TXFLAG_TAGON;
1816 *vlan = vlan_tx_tag_get(skb);
1817 }
1818}
1819
1820static int
1821jme_fill_first_tx_desc(struct jme_adapter *jme, struct sk_buff *skb, int idx)
1822{
1823 struct jme_ring *txring = jme->txring;
1824 struct txdesc *txdesc;
1825 struct jme_buffer_info *txbi;
1826 u8 flags;
1827
1828 txdesc = (struct txdesc *)txring->desc + idx;
1829 txbi = txring->bufinf + idx;
1830
1831 txdesc->dw[0] = 0;
1832 txdesc->dw[1] = 0;
1833 txdesc->dw[2] = 0;
1834 txdesc->dw[3] = 0;
1835 txdesc->desc1.pktsize = cpu_to_le16(skb->len);
1836 /*
1837 * Set OWN bit at final.
1838 * When kernel transmit faster than NIC.
1839 * And NIC trying to send this descriptor before we tell
1840 * it to start sending this TX queue.
1841 * Other fields are already filled correctly.
1842 */
1843 wmb();
1844 flags = TXFLAG_OWN | TXFLAG_INT;
1845 /*
1846 * Set checksum flags while not tso
1847 */
1848 if (jme_tx_tso(skb, &txdesc->desc1.mss, &flags))
1849 jme_tx_csum(jme, skb, &flags);
1850 jme_tx_vlan(skb, &txdesc->desc1.vlan, &flags);
1851 txdesc->desc1.flags = flags;
1852 /*
1853 * Set tx buffer info after telling NIC to send
1854 * For better tx_clean timing
1855 */
1856 wmb();
1857 txbi->nr_desc = skb_shinfo(skb)->nr_frags + 2;
1858 txbi->skb = skb;
1859 txbi->len = skb->len;
1860 txbi->start_xmit = jiffies;
1861 if (!txbi->start_xmit)
1862 txbi->start_xmit = (0UL-1);
1863
1864 return 0;
1865}
1866
1867static void
1868jme_stop_queue_if_full(struct jme_adapter *jme)
1869{
1870 struct jme_ring *txring = jme->txring;
1871 struct jme_buffer_info *txbi = txring->bufinf;
1872 int idx = atomic_read(&txring->next_to_clean);
1873
1874 txbi += idx;
1875
1876 smp_wmb();
1877 if (unlikely(atomic_read(&txring->nr_free) < (MAX_SKB_FRAGS+2))) {
1878 netif_stop_queue(jme->dev);
1879 msg_tx_queued(jme, "TX Queue Paused.\n");
1880 smp_wmb();
1881 if (atomic_read(&txring->nr_free)
1882 >= (jme->tx_wake_threshold)) {
1883 netif_wake_queue(jme->dev);
1884 msg_tx_queued(jme, "TX Queue Fast Waked.\n");
1885 }
1886 }
1887
1888 if (unlikely(txbi->start_xmit &&
1889 (jiffies - txbi->start_xmit) >= TX_TIMEOUT &&
1890 txbi->skb)) {
1891 netif_stop_queue(jme->dev);
1892 msg_tx_queued(jme, "TX Queue Stopped %d@%lu.\n", idx, jiffies);
1893 }
1894}
1895
1896/*
1897 * This function is already protected by netif_tx_lock()
1898 */
1899
1900static int
1901jme_start_xmit(struct sk_buff *skb, struct net_device *netdev)
1902{
1903 struct jme_adapter *jme = netdev_priv(netdev);
1904 int idx;
1905
1906 if (unlikely(jme_expand_header(jme, skb))) {
1907 ++(NET_STAT(jme).tx_dropped);
1908 return NETDEV_TX_OK;
1909 }
1910
1911 idx = jme_alloc_txdesc(jme, skb);
1912
1913 if (unlikely(idx < 0)) {
1914 netif_stop_queue(netdev);
1915 msg_tx_err(jme, "BUG! Tx ring full when queue awake!\n");
1916
1917 return NETDEV_TX_BUSY;
1918 }
1919
1920 jme_map_tx_skb(jme, skb, idx);
1921 jme_fill_first_tx_desc(jme, skb, idx);
1922
1923 jwrite32(jme, JME_TXCS, jme->reg_txcs |
1924 TXCS_SELECT_QUEUE0 |
1925 TXCS_QUEUE0S |
1926 TXCS_ENABLE);
1927 netdev->trans_start = jiffies;
1928
1929 tx_dbg(jme, "xmit: %d+%d@%lu\n", idx,
1930 skb_shinfo(skb)->nr_frags + 2,
1931 jiffies);
1932 jme_stop_queue_if_full(jme);
1933
1934 return NETDEV_TX_OK;
1935}
1936
1937static int
1938jme_set_macaddr(struct net_device *netdev, void *p)
1939{
1940 struct jme_adapter *jme = netdev_priv(netdev);
1941 struct sockaddr *addr = p;
1942 u32 val;
1943
1944 if (netif_running(netdev))
1945 return -EBUSY;
1946
1947 spin_lock_bh(&jme->macaddr_lock);
1948 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
1949
1950 val = (addr->sa_data[3] & 0xff) << 24 |
1951 (addr->sa_data[2] & 0xff) << 16 |
1952 (addr->sa_data[1] & 0xff) << 8 |
1953 (addr->sa_data[0] & 0xff);
1954 jwrite32(jme, JME_RXUMA_LO, val);
1955 val = (addr->sa_data[5] & 0xff) << 8 |
1956 (addr->sa_data[4] & 0xff);
1957 jwrite32(jme, JME_RXUMA_HI, val);
1958 spin_unlock_bh(&jme->macaddr_lock);
1959
1960 return 0;
1961}
1962
1963static void
1964jme_set_multi(struct net_device *netdev)
1965{
1966 struct jme_adapter *jme = netdev_priv(netdev);
1967 u32 mc_hash[2] = {};
1968 int i;
1969
1970 spin_lock_bh(&jme->rxmcs_lock);
1971
1972 jme->reg_rxmcs |= RXMCS_BRDFRAME | RXMCS_UNIFRAME;
1973
1974 if (netdev->flags & IFF_PROMISC) {
1975 jme->reg_rxmcs |= RXMCS_ALLFRAME;
1976 } else if (netdev->flags & IFF_ALLMULTI) {
1977 jme->reg_rxmcs |= RXMCS_ALLMULFRAME;
1978 } else if (netdev->flags & IFF_MULTICAST) {
1979 struct dev_mc_list *mclist;
1980 int bit_nr;
1981
1982 jme->reg_rxmcs |= RXMCS_MULFRAME | RXMCS_MULFILTERED;
1983 for (i = 0, mclist = netdev->mc_list;
1984 mclist && i < netdev->mc_count;
1985 ++i, mclist = mclist->next) {
1986
1987 bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) & 0x3F;
1988 mc_hash[bit_nr >> 5] |= 1 << (bit_nr & 0x1F);
1989 }
1990
1991 jwrite32(jme, JME_RXMCHT_LO, mc_hash[0]);
1992 jwrite32(jme, JME_RXMCHT_HI, mc_hash[1]);
1993 }
1994
1995 wmb();
1996 jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
1997
1998 spin_unlock_bh(&jme->rxmcs_lock);
1999}
2000
2001static int
2002jme_change_mtu(struct net_device *netdev, int new_mtu)
2003{
2004 struct jme_adapter *jme = netdev_priv(netdev);
2005
2006 if (new_mtu == jme->old_mtu)
2007 return 0;
2008
2009 if (((new_mtu + ETH_HLEN) > MAX_ETHERNET_JUMBO_PACKET_SIZE) ||
2010 ((new_mtu) < IPV6_MIN_MTU))
2011 return -EINVAL;
2012
2013 if (new_mtu > 4000) {
2014 jme->reg_rxcs &= ~RXCS_FIFOTHNP;
2015 jme->reg_rxcs |= RXCS_FIFOTHNP_64QW;
2016 jme_restart_rx_engine(jme);
2017 } else {
2018 jme->reg_rxcs &= ~RXCS_FIFOTHNP;
2019 jme->reg_rxcs |= RXCS_FIFOTHNP_128QW;
2020 jme_restart_rx_engine(jme);
2021 }
2022
2023 if (new_mtu > 1900) {
2024 netdev->features &= ~(NETIF_F_HW_CSUM |
2025 NETIF_F_TSO |
2026 NETIF_F_TSO6);
2027 } else {
2028 if (test_bit(JME_FLAG_TXCSUM, &jme->flags))
2029 netdev->features |= NETIF_F_HW_CSUM;
2030 if (test_bit(JME_FLAG_TSO, &jme->flags))
2031 netdev->features |= NETIF_F_TSO | NETIF_F_TSO6;
2032 }
2033
2034 netdev->mtu = new_mtu;
2035 jme_reset_link(jme);
2036
2037 return 0;
2038}
2039
2040static void
2041jme_tx_timeout(struct net_device *netdev)
2042{
2043 struct jme_adapter *jme = netdev_priv(netdev);
2044
2045 jme->phylink = 0;
2046 jme_reset_phy_processor(jme);
2047 if (test_bit(JME_FLAG_SSET, &jme->flags))
2048 jme_set_settings(netdev, &jme->old_ecmd);
2049
2050 /*
2051 * Force to Reset the link again
2052 */
2053 jme_reset_link(jme);
2054}
2055
2056static void
2057jme_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp)
2058{
2059 struct jme_adapter *jme = netdev_priv(netdev);
2060
2061 jme->vlgrp = grp;
2062}
2063
2064static void
2065jme_get_drvinfo(struct net_device *netdev,
2066 struct ethtool_drvinfo *info)
2067{
2068 struct jme_adapter *jme = netdev_priv(netdev);
2069
2070 strcpy(info->driver, DRV_NAME);
2071 strcpy(info->version, DRV_VERSION);
2072 strcpy(info->bus_info, pci_name(jme->pdev));
2073}
2074
2075static int
2076jme_get_regs_len(struct net_device *netdev)
2077{
2078 return JME_REG_LEN;
2079}
2080
2081static void
2082mmapio_memcpy(struct jme_adapter *jme, u32 *p, u32 reg, int len)
2083{
2084 int i;
2085
2086 for (i = 0 ; i < len ; i += 4)
2087 p[i >> 2] = jread32(jme, reg + i);
2088}
2089
2090static void
2091mdio_memcpy(struct jme_adapter *jme, u32 *p, int reg_nr)
2092{
2093 int i;
2094 u16 *p16 = (u16 *)p;
2095
2096 for (i = 0 ; i < reg_nr ; ++i)
2097 p16[i] = jme_mdio_read(jme->dev, jme->mii_if.phy_id, i);
2098}
2099
2100static void
2101jme_get_regs(struct net_device *netdev, struct ethtool_regs *regs, void *p)
2102{
2103 struct jme_adapter *jme = netdev_priv(netdev);
2104 u32 *p32 = (u32 *)p;
2105
2106 memset(p, 0xFF, JME_REG_LEN);
2107
2108 regs->version = 1;
2109 mmapio_memcpy(jme, p32, JME_MAC, JME_MAC_LEN);
2110
2111 p32 += 0x100 >> 2;
2112 mmapio_memcpy(jme, p32, JME_PHY, JME_PHY_LEN);
2113
2114 p32 += 0x100 >> 2;
2115 mmapio_memcpy(jme, p32, JME_MISC, JME_MISC_LEN);
2116
2117 p32 += 0x100 >> 2;
2118 mmapio_memcpy(jme, p32, JME_RSS, JME_RSS_LEN);
2119
2120 p32 += 0x100 >> 2;
2121 mdio_memcpy(jme, p32, JME_PHY_REG_NR);
2122}
2123
2124static int
2125jme_get_coalesce(struct net_device *netdev, struct ethtool_coalesce *ecmd)
2126{
2127 struct jme_adapter *jme = netdev_priv(netdev);
2128
2129 ecmd->tx_coalesce_usecs = PCC_TX_TO;
2130 ecmd->tx_max_coalesced_frames = PCC_TX_CNT;
2131
2132 if (test_bit(JME_FLAG_POLL, &jme->flags)) {
2133 ecmd->use_adaptive_rx_coalesce = false;
2134 ecmd->rx_coalesce_usecs = 0;
2135 ecmd->rx_max_coalesced_frames = 0;
2136 return 0;
2137 }
2138
2139 ecmd->use_adaptive_rx_coalesce = true;
2140
2141 switch (jme->dpi.cur) {
2142 case PCC_P1:
2143 ecmd->rx_coalesce_usecs = PCC_P1_TO;
2144 ecmd->rx_max_coalesced_frames = PCC_P1_CNT;
2145 break;
2146 case PCC_P2:
2147 ecmd->rx_coalesce_usecs = PCC_P2_TO;
2148 ecmd->rx_max_coalesced_frames = PCC_P2_CNT;
2149 break;
2150 case PCC_P3:
2151 ecmd->rx_coalesce_usecs = PCC_P3_TO;
2152 ecmd->rx_max_coalesced_frames = PCC_P3_CNT;
2153 break;
2154 default:
2155 break;
2156 }
2157
2158 return 0;
2159}
2160
2161static int
2162jme_set_coalesce(struct net_device *netdev, struct ethtool_coalesce *ecmd)
2163{
2164 struct jme_adapter *jme = netdev_priv(netdev);
2165 struct dynpcc_info *dpi = &(jme->dpi);
2166
2167 if (netif_running(netdev))
2168 return -EBUSY;
2169
2170 if (ecmd->use_adaptive_rx_coalesce
2171 && test_bit(JME_FLAG_POLL, &jme->flags)) {
2172 clear_bit(JME_FLAG_POLL, &jme->flags);
2173 jme->jme_rx = netif_rx;
2174 jme->jme_vlan_rx = vlan_hwaccel_rx;
2175 dpi->cur = PCC_P1;
2176 dpi->attempt = PCC_P1;
2177 dpi->cnt = 0;
2178 jme_set_rx_pcc(jme, PCC_P1);
2179 jme_interrupt_mode(jme);
2180 } else if (!(ecmd->use_adaptive_rx_coalesce)
2181 && !(test_bit(JME_FLAG_POLL, &jme->flags))) {
2182 set_bit(JME_FLAG_POLL, &jme->flags);
2183 jme->jme_rx = netif_receive_skb;
2184 jme->jme_vlan_rx = vlan_hwaccel_receive_skb;
2185 jme_interrupt_mode(jme);
2186 }
2187
2188 return 0;
2189}
2190
2191static void
2192jme_get_pauseparam(struct net_device *netdev,
2193 struct ethtool_pauseparam *ecmd)
2194{
2195 struct jme_adapter *jme = netdev_priv(netdev);
2196 u32 val;
2197
2198 ecmd->tx_pause = (jme->reg_txpfc & TXPFC_PF_EN) != 0;
2199 ecmd->rx_pause = (jme->reg_rxmcs & RXMCS_FLOWCTRL) != 0;
2200
2201 spin_lock_bh(&jme->phy_lock);
2202 val = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_ADVERTISE);
2203 spin_unlock_bh(&jme->phy_lock);
2204
2205 ecmd->autoneg =
2206 (val & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) != 0;
2207}
2208
2209static int
2210jme_set_pauseparam(struct net_device *netdev,
2211 struct ethtool_pauseparam *ecmd)
2212{
2213 struct jme_adapter *jme = netdev_priv(netdev);
2214 u32 val;
2215
2216 if (((jme->reg_txpfc & TXPFC_PF_EN) != 0) ^
2217 (ecmd->tx_pause != 0)) {
2218
2219 if (ecmd->tx_pause)
2220 jme->reg_txpfc |= TXPFC_PF_EN;
2221 else
2222 jme->reg_txpfc &= ~TXPFC_PF_EN;
2223
2224 jwrite32(jme, JME_TXPFC, jme->reg_txpfc);
2225 }
2226
2227 spin_lock_bh(&jme->rxmcs_lock);
2228 if (((jme->reg_rxmcs & RXMCS_FLOWCTRL) != 0) ^
2229 (ecmd->rx_pause != 0)) {
2230
2231 if (ecmd->rx_pause)
2232 jme->reg_rxmcs |= RXMCS_FLOWCTRL;
2233 else
2234 jme->reg_rxmcs &= ~RXMCS_FLOWCTRL;
2235
2236 jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2237 }
2238 spin_unlock_bh(&jme->rxmcs_lock);
2239
2240 spin_lock_bh(&jme->phy_lock);
2241 val = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_ADVERTISE);
2242 if (((val & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) != 0) ^
2243 (ecmd->autoneg != 0)) {
2244
2245 if (ecmd->autoneg)
2246 val |= (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
2247 else
2248 val &= ~(ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
2249
2250 jme_mdio_write(jme->dev, jme->mii_if.phy_id,
2251 MII_ADVERTISE, val);
2252 }
2253 spin_unlock_bh(&jme->phy_lock);
2254
2255 return 0;
2256}
2257
2258static void
2259jme_get_wol(struct net_device *netdev,
2260 struct ethtool_wolinfo *wol)
2261{
2262 struct jme_adapter *jme = netdev_priv(netdev);
2263
2264 wol->supported = WAKE_MAGIC | WAKE_PHY;
2265
2266 wol->wolopts = 0;
2267
2268 if (jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN))
2269 wol->wolopts |= WAKE_PHY;
2270
2271 if (jme->reg_pmcs & PMCS_MFEN)
2272 wol->wolopts |= WAKE_MAGIC;
2273
2274}
2275
2276static int
2277jme_set_wol(struct net_device *netdev,
2278 struct ethtool_wolinfo *wol)
2279{
2280 struct jme_adapter *jme = netdev_priv(netdev);
2281
2282 if (wol->wolopts & (WAKE_MAGICSECURE |
2283 WAKE_UCAST |
2284 WAKE_MCAST |
2285 WAKE_BCAST |
2286 WAKE_ARP))
2287 return -EOPNOTSUPP;
2288
2289 jme->reg_pmcs = 0;
2290
2291 if (wol->wolopts & WAKE_PHY)
2292 jme->reg_pmcs |= PMCS_LFEN | PMCS_LREN;
2293
2294 if (wol->wolopts & WAKE_MAGIC)
2295 jme->reg_pmcs |= PMCS_MFEN;
2296
2297 jwrite32(jme, JME_PMCS, jme->reg_pmcs);
2298
2299 return 0;
2300}
2301
2302static int
2303jme_get_settings(struct net_device *netdev,
2304 struct ethtool_cmd *ecmd)
2305{
2306 struct jme_adapter *jme = netdev_priv(netdev);
2307 int rc;
2308
2309 spin_lock_bh(&jme->phy_lock);
2310 rc = mii_ethtool_gset(&(jme->mii_if), ecmd);
2311 spin_unlock_bh(&jme->phy_lock);
2312 return rc;
2313}
2314
2315static int
2316jme_set_settings(struct net_device *netdev,
2317 struct ethtool_cmd *ecmd)
2318{
2319 struct jme_adapter *jme = netdev_priv(netdev);
2320 int rc, fdc = 0;
2321
2322 if (ecmd->speed == SPEED_1000 && ecmd->autoneg != AUTONEG_ENABLE)
2323 return -EINVAL;
2324
2325 if (jme->mii_if.force_media &&
2326 ecmd->autoneg != AUTONEG_ENABLE &&
2327 (jme->mii_if.full_duplex != ecmd->duplex))
2328 fdc = 1;
2329
2330 spin_lock_bh(&jme->phy_lock);
2331 rc = mii_ethtool_sset(&(jme->mii_if), ecmd);
2332 spin_unlock_bh(&jme->phy_lock);
2333
2334 if (!rc && fdc)
2335 jme_reset_link(jme);
2336
2337 if (!rc) {
2338 set_bit(JME_FLAG_SSET, &jme->flags);
2339 jme->old_ecmd = *ecmd;
2340 }
2341
2342 return rc;
2343}
2344
2345static u32
2346jme_get_link(struct net_device *netdev)
2347{
2348 struct jme_adapter *jme = netdev_priv(netdev);
2349 return jread32(jme, JME_PHY_LINK) & PHY_LINK_UP;
2350}
2351
2352static u32
2353jme_get_msglevel(struct net_device *netdev)
2354{
2355 struct jme_adapter *jme = netdev_priv(netdev);
2356 return jme->msg_enable;
2357}
2358
2359static void
2360jme_set_msglevel(struct net_device *netdev, u32 value)
2361{
2362 struct jme_adapter *jme = netdev_priv(netdev);
2363 jme->msg_enable = value;
2364}
2365
2366static u32
2367jme_get_rx_csum(struct net_device *netdev)
2368{
2369 struct jme_adapter *jme = netdev_priv(netdev);
2370 return jme->reg_rxmcs & RXMCS_CHECKSUM;
2371}
2372
2373static int
2374jme_set_rx_csum(struct net_device *netdev, u32 on)
2375{
2376 struct jme_adapter *jme = netdev_priv(netdev);
2377
2378 spin_lock_bh(&jme->rxmcs_lock);
2379 if (on)
2380 jme->reg_rxmcs |= RXMCS_CHECKSUM;
2381 else
2382 jme->reg_rxmcs &= ~RXMCS_CHECKSUM;
2383 jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2384 spin_unlock_bh(&jme->rxmcs_lock);
2385
2386 return 0;
2387}
2388
2389static int
2390jme_set_tx_csum(struct net_device *netdev, u32 on)
2391{
2392 struct jme_adapter *jme = netdev_priv(netdev);
2393
2394 if (on) {
2395 set_bit(JME_FLAG_TXCSUM, &jme->flags);
2396 if (netdev->mtu <= 1900)
2397 netdev->features |= NETIF_F_HW_CSUM;
2398 } else {
2399 clear_bit(JME_FLAG_TXCSUM, &jme->flags);
2400 netdev->features &= ~NETIF_F_HW_CSUM;
2401 }
2402
2403 return 0;
2404}
2405
2406static int
2407jme_set_tso(struct net_device *netdev, u32 on)
2408{
2409 struct jme_adapter *jme = netdev_priv(netdev);
2410
2411 if (on) {
2412 set_bit(JME_FLAG_TSO, &jme->flags);
2413 if (netdev->mtu <= 1900)
2414 netdev->features |= NETIF_F_TSO | NETIF_F_TSO6;
2415 } else {
2416 clear_bit(JME_FLAG_TSO, &jme->flags);
2417 netdev->features &= ~(NETIF_F_TSO | NETIF_F_TSO6);
2418 }
2419
2420 return 0;
2421}
2422
2423static int
2424jme_nway_reset(struct net_device *netdev)
2425{
2426 struct jme_adapter *jme = netdev_priv(netdev);
2427 jme_restart_an(jme);
2428 return 0;
2429}
2430
2431static u8
2432jme_smb_read(struct jme_adapter *jme, unsigned int addr)
2433{
2434 u32 val;
2435 int to;
2436
2437 val = jread32(jme, JME_SMBCSR);
2438 to = JME_SMB_BUSY_TIMEOUT;
2439 while ((val & SMBCSR_BUSY) && --to) {
2440 msleep(1);
2441 val = jread32(jme, JME_SMBCSR);
2442 }
2443 if (!to) {
2444 msg_hw(jme, "SMB Bus Busy.\n");
2445 return 0xFF;
2446 }
2447
2448 jwrite32(jme, JME_SMBINTF,
2449 ((addr << SMBINTF_HWADDR_SHIFT) & SMBINTF_HWADDR) |
2450 SMBINTF_HWRWN_READ |
2451 SMBINTF_HWCMD);
2452
2453 val = jread32(jme, JME_SMBINTF);
2454 to = JME_SMB_BUSY_TIMEOUT;
2455 while ((val & SMBINTF_HWCMD) && --to) {
2456 msleep(1);
2457 val = jread32(jme, JME_SMBINTF);
2458 }
2459 if (!to) {
2460 msg_hw(jme, "SMB Bus Busy.\n");
2461 return 0xFF;
2462 }
2463
2464 return (val & SMBINTF_HWDATR) >> SMBINTF_HWDATR_SHIFT;
2465}
2466
2467static void
2468jme_smb_write(struct jme_adapter *jme, unsigned int addr, u8 data)
2469{
2470 u32 val;
2471 int to;
2472
2473 val = jread32(jme, JME_SMBCSR);
2474 to = JME_SMB_BUSY_TIMEOUT;
2475 while ((val & SMBCSR_BUSY) && --to) {
2476 msleep(1);
2477 val = jread32(jme, JME_SMBCSR);
2478 }
2479 if (!to) {
2480 msg_hw(jme, "SMB Bus Busy.\n");
2481 return;
2482 }
2483
2484 jwrite32(jme, JME_SMBINTF,
2485 ((data << SMBINTF_HWDATW_SHIFT) & SMBINTF_HWDATW) |
2486 ((addr << SMBINTF_HWADDR_SHIFT) & SMBINTF_HWADDR) |
2487 SMBINTF_HWRWN_WRITE |
2488 SMBINTF_HWCMD);
2489
2490 val = jread32(jme, JME_SMBINTF);
2491 to = JME_SMB_BUSY_TIMEOUT;
2492 while ((val & SMBINTF_HWCMD) && --to) {
2493 msleep(1);
2494 val = jread32(jme, JME_SMBINTF);
2495 }
2496 if (!to) {
2497 msg_hw(jme, "SMB Bus Busy.\n");
2498 return;
2499 }
2500
2501 mdelay(2);
2502}
2503
2504static int
2505jme_get_eeprom_len(struct net_device *netdev)
2506{
2507 struct jme_adapter *jme = netdev_priv(netdev);
2508 u32 val;
2509 val = jread32(jme, JME_SMBCSR);
2510 return (val & SMBCSR_EEPROMD) ? JME_SMB_LEN : 0;
2511}
2512
2513static int
2514jme_get_eeprom(struct net_device *netdev,
2515 struct ethtool_eeprom *eeprom, u8 *data)
2516{
2517 struct jme_adapter *jme = netdev_priv(netdev);
2518 int i, offset = eeprom->offset, len = eeprom->len;
2519
2520 /*
2521 * ethtool will check the boundary for us
2522 */
2523 eeprom->magic = JME_EEPROM_MAGIC;
2524 for (i = 0 ; i < len ; ++i)
2525 data[i] = jme_smb_read(jme, i + offset);
2526
2527 return 0;
2528}
2529
2530static int
2531jme_set_eeprom(struct net_device *netdev,
2532 struct ethtool_eeprom *eeprom, u8 *data)
2533{
2534 struct jme_adapter *jme = netdev_priv(netdev);
2535 int i, offset = eeprom->offset, len = eeprom->len;
2536
2537 if (eeprom->magic != JME_EEPROM_MAGIC)
2538 return -EINVAL;
2539
2540 /*
2541 * ethtool will check the boundary for us
2542 */
2543 for (i = 0 ; i < len ; ++i)
2544 jme_smb_write(jme, i + offset, data[i]);
2545
2546 return 0;
2547}
2548
2549static const struct ethtool_ops jme_ethtool_ops = {
2550 .get_drvinfo = jme_get_drvinfo,
2551 .get_regs_len = jme_get_regs_len,
2552 .get_regs = jme_get_regs,
2553 .get_coalesce = jme_get_coalesce,
2554 .set_coalesce = jme_set_coalesce,
2555 .get_pauseparam = jme_get_pauseparam,
2556 .set_pauseparam = jme_set_pauseparam,
2557 .get_wol = jme_get_wol,
2558 .set_wol = jme_set_wol,
2559 .get_settings = jme_get_settings,
2560 .set_settings = jme_set_settings,
2561 .get_link = jme_get_link,
2562 .get_msglevel = jme_get_msglevel,
2563 .set_msglevel = jme_set_msglevel,
2564 .get_rx_csum = jme_get_rx_csum,
2565 .set_rx_csum = jme_set_rx_csum,
2566 .set_tx_csum = jme_set_tx_csum,
2567 .set_tso = jme_set_tso,
2568 .set_sg = ethtool_op_set_sg,
2569 .nway_reset = jme_nway_reset,
2570 .get_eeprom_len = jme_get_eeprom_len,
2571 .get_eeprom = jme_get_eeprom,
2572 .set_eeprom = jme_set_eeprom,
2573};
2574
2575static int
2576jme_pci_dma64(struct pci_dev *pdev)
2577{
2578 if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK))
2579 if (!pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK))
2580 return 1;
2581
2582 if (!pci_set_dma_mask(pdev, DMA_40BIT_MASK))
2583 if (!pci_set_consistent_dma_mask(pdev, DMA_40BIT_MASK))
2584 return 1;
2585
2586 if (!pci_set_dma_mask(pdev, DMA_32BIT_MASK))
2587 if (!pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK))
2588 return 0;
2589
2590 return -1;
2591}
2592
2593static inline void
2594jme_phy_init(struct jme_adapter *jme)
2595{
2596 u16 reg26;
2597
2598 reg26 = jme_mdio_read(jme->dev, jme->mii_if.phy_id, 26);
2599 jme_mdio_write(jme->dev, jme->mii_if.phy_id, 26, reg26 | 0x1000);
2600}
2601
2602static inline void
2603jme_check_hw_ver(struct jme_adapter *jme)
2604{
2605 u32 chipmode;
2606
2607 chipmode = jread32(jme, JME_CHIPMODE);
2608
2609 jme->fpgaver = (chipmode & CM_FPGAVER_MASK) >> CM_FPGAVER_SHIFT;
2610 jme->chiprev = (chipmode & CM_CHIPREV_MASK) >> CM_CHIPREV_SHIFT;
2611}
2612
2613static int __devinit
2614jme_init_one(struct pci_dev *pdev,
2615 const struct pci_device_id *ent)
2616{
2617 int rc = 0, using_dac, i;
2618 struct net_device *netdev;
2619 struct jme_adapter *jme;
2620 u16 bmcr, bmsr;
2621 u32 apmc;
2622
2623 /*
2624 * set up PCI device basics
2625 */
2626 rc = pci_enable_device(pdev);
2627 if (rc) {
2628 jeprintk(pdev, "Cannot enable PCI device.\n");
2629 goto err_out;
2630 }
2631
2632 using_dac = jme_pci_dma64(pdev);
2633 if (using_dac < 0) {
2634 jeprintk(pdev, "Cannot set PCI DMA Mask.\n");
2635 rc = -EIO;
2636 goto err_out_disable_pdev;
2637 }
2638
2639 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
2640 jeprintk(pdev, "No PCI resource region found.\n");
2641 rc = -ENOMEM;
2642 goto err_out_disable_pdev;
2643 }
2644
2645 rc = pci_request_regions(pdev, DRV_NAME);
2646 if (rc) {
2647 jeprintk(pdev, "Cannot obtain PCI resource region.\n");
2648 goto err_out_disable_pdev;
2649 }
2650
2651 pci_set_master(pdev);
2652
2653 /*
2654 * alloc and init net device
2655 */
2656 netdev = alloc_etherdev(sizeof(*jme));
2657 if (!netdev) {
2658 jeprintk(pdev, "Cannot allocate netdev structure.\n");
2659 rc = -ENOMEM;
2660 goto err_out_release_regions;
2661 }
2662 netdev->open = jme_open;
2663 netdev->stop = jme_close;
2664 netdev->hard_start_xmit = jme_start_xmit;
2665 netdev->set_mac_address = jme_set_macaddr;
2666 netdev->set_multicast_list = jme_set_multi;
2667 netdev->change_mtu = jme_change_mtu;
2668 netdev->ethtool_ops = &jme_ethtool_ops;
2669 netdev->tx_timeout = jme_tx_timeout;
2670 netdev->watchdog_timeo = TX_TIMEOUT;
2671 netdev->vlan_rx_register = jme_vlan_rx_register;
2672 NETDEV_GET_STATS(netdev, &jme_get_stats);
2673 netdev->features = NETIF_F_HW_CSUM |
2674 NETIF_F_SG |
2675 NETIF_F_TSO |
2676 NETIF_F_TSO6 |
2677 NETIF_F_HW_VLAN_TX |
2678 NETIF_F_HW_VLAN_RX;
2679 if (using_dac)
2680 netdev->features |= NETIF_F_HIGHDMA;
2681
2682 SET_NETDEV_DEV(netdev, &pdev->dev);
2683 pci_set_drvdata(pdev, netdev);
2684
2685 /*
2686 * init adapter info
2687 */
2688 jme = netdev_priv(netdev);
2689 jme->pdev = pdev;
2690 jme->dev = netdev;
2691 jme->jme_rx = netif_rx;
2692 jme->jme_vlan_rx = vlan_hwaccel_rx;
2693 jme->old_mtu = netdev->mtu = 1500;
2694 jme->phylink = 0;
2695 jme->tx_ring_size = 1 << 10;
2696 jme->tx_ring_mask = jme->tx_ring_size - 1;
2697 jme->tx_wake_threshold = 1 << 9;
2698 jme->rx_ring_size = 1 << 9;
2699 jme->rx_ring_mask = jme->rx_ring_size - 1;
2700 jme->msg_enable = JME_DEF_MSG_ENABLE;
2701 jme->regs = ioremap(pci_resource_start(pdev, 0),
2702 pci_resource_len(pdev, 0));
2703 if (!(jme->regs)) {
2704 jeprintk(pdev, "Mapping PCI resource region error.\n");
2705 rc = -ENOMEM;
2706 goto err_out_free_netdev;
2707 }
2708 jme->shadow_regs = pci_alloc_consistent(pdev,
2709 sizeof(u32) * SHADOW_REG_NR,
2710 &(jme->shadow_dma));
2711 if (!(jme->shadow_regs)) {
2712 jeprintk(pdev, "Allocating shadow register mapping error.\n");
2713 rc = -ENOMEM;
2714 goto err_out_unmap;
2715 }
2716
2717 if (no_pseudohp) {
2718 apmc = jread32(jme, JME_APMC) & ~JME_APMC_PSEUDO_HP_EN;
2719 jwrite32(jme, JME_APMC, apmc);
2720 } else if (force_pseudohp) {
2721 apmc = jread32(jme, JME_APMC) | JME_APMC_PSEUDO_HP_EN;
2722 jwrite32(jme, JME_APMC, apmc);
2723 }
2724
2725 NETIF_NAPI_SET(netdev, &jme->napi, jme_poll, jme->rx_ring_size >> 2)
2726
2727 spin_lock_init(&jme->phy_lock);
2728 spin_lock_init(&jme->macaddr_lock);
2729 spin_lock_init(&jme->rxmcs_lock);
2730
2731 atomic_set(&jme->link_changing, 1);
2732 atomic_set(&jme->rx_cleaning, 1);
2733 atomic_set(&jme->tx_cleaning, 1);
2734 atomic_set(&jme->rx_empty, 1);
2735
2736 tasklet_init(&jme->pcc_task,
2737 &jme_pcc_tasklet,
2738 (unsigned long) jme);
2739 tasklet_init(&jme->linkch_task,
2740 &jme_link_change_tasklet,
2741 (unsigned long) jme);
2742 tasklet_init(&jme->txclean_task,
2743 &jme_tx_clean_tasklet,
2744 (unsigned long) jme);
2745 tasklet_init(&jme->rxclean_task,
2746 &jme_rx_clean_tasklet,
2747 (unsigned long) jme);
2748 tasklet_init(&jme->rxempty_task,
2749 &jme_rx_empty_tasklet,
2750 (unsigned long) jme);
2751 tasklet_disable_nosync(&jme->txclean_task);
2752 tasklet_disable_nosync(&jme->rxclean_task);
2753 tasklet_disable_nosync(&jme->rxempty_task);
2754 jme->dpi.cur = PCC_P1;
2755
2756 jme->reg_ghc = 0;
2757 jme->reg_rxcs = RXCS_DEFAULT;
2758 jme->reg_rxmcs = RXMCS_DEFAULT;
2759 jme->reg_txpfc = 0;
2760 jme->reg_pmcs = PMCS_MFEN;
2761 set_bit(JME_FLAG_TXCSUM, &jme->flags);
2762 set_bit(JME_FLAG_TSO, &jme->flags);
2763
2764 /*
2765 * Get Max Read Req Size from PCI Config Space
2766 */
2767 pci_read_config_byte(pdev, PCI_DCSR_MRRS, &jme->mrrs);
2768 jme->mrrs &= PCI_DCSR_MRRS_MASK;
2769 switch (jme->mrrs) {
2770 case MRRS_128B:
2771 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_128B;
2772 break;
2773 case MRRS_256B:
2774 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_256B;
2775 break;
2776 default:
2777 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_512B;
2778 break;
2779 };
2780
2781 /*
2782 * Must check before reset_mac_processor
2783 */
2784 jme_check_hw_ver(jme);
2785 jme->mii_if.dev = netdev;
2786 if (jme->fpgaver) {
2787 jme->mii_if.phy_id = 0;
2788 for (i = 1 ; i < 32 ; ++i) {
2789 bmcr = jme_mdio_read(netdev, i, MII_BMCR);
2790 bmsr = jme_mdio_read(netdev, i, MII_BMSR);
2791 if (bmcr != 0xFFFFU && (bmcr != 0 || bmsr != 0)) {
2792 jme->mii_if.phy_id = i;
2793 break;
2794 }
2795 }
2796
2797 if (!jme->mii_if.phy_id) {
2798 rc = -EIO;
2799 jeprintk(pdev, "Can not find phy_id.\n");
2800 goto err_out_free_shadow;
2801 }
2802
2803 jme->reg_ghc |= GHC_LINK_POLL;
2804 } else {
2805 jme->mii_if.phy_id = 1;
2806 }
2807 if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250)
2808 jme->mii_if.supports_gmii = true;
2809 else
2810 jme->mii_if.supports_gmii = false;
2811 jme->mii_if.mdio_read = jme_mdio_read;
2812 jme->mii_if.mdio_write = jme_mdio_write;
2813
2814 jme_clear_pm(jme);
2815 jme_set_phyfifoa(jme);
2816 pci_read_config_byte(pdev, PCI_REVISION_ID, &jme->rev);
2817 if (!jme->fpgaver)
2818 jme_phy_init(jme);
2819 jme_phy_off(jme);
2820
2821 /*
2822 * Reset MAC processor and reload EEPROM for MAC Address
2823 */
2824 jme_reset_mac_processor(jme);
2825 rc = jme_reload_eeprom(jme);
2826 if (rc) {
2827 jeprintk(pdev,
2828 "Reload eeprom for reading MAC Address error.\n");
2829 goto err_out_free_shadow;
2830 }
2831 jme_load_macaddr(netdev);
2832
2833 /*
2834 * Tell stack that we are not ready to work until open()
2835 */
2836 netif_carrier_off(netdev);
2837 netif_stop_queue(netdev);
2838
2839 /*
2840 * Register netdev
2841 */
2842 rc = register_netdev(netdev);
2843 if (rc) {
2844 jeprintk(pdev, "Cannot register net device.\n");
2845 goto err_out_free_shadow;
2846 }
2847
2848 msg_probe(jme,
2849 "JMC250 gigabit%s ver:%x rev:%x "
2850 "macaddr:%02x:%02x:%02x:%02x:%02x:%02x\n",
2851 (jme->fpgaver != 0) ? " (FPGA)" : "",
2852 (jme->fpgaver != 0) ? jme->fpgaver : jme->chiprev,
2853 jme->rev,
2854 netdev->dev_addr[0],
2855 netdev->dev_addr[1],
2856 netdev->dev_addr[2],
2857 netdev->dev_addr[3],
2858 netdev->dev_addr[4],
2859 netdev->dev_addr[5]);
2860
2861 return 0;
2862
2863err_out_free_shadow:
2864 pci_free_consistent(pdev,
2865 sizeof(u32) * SHADOW_REG_NR,
2866 jme->shadow_regs,
2867 jme->shadow_dma);
2868err_out_unmap:
2869 iounmap(jme->regs);
2870err_out_free_netdev:
2871 pci_set_drvdata(pdev, NULL);
2872 free_netdev(netdev);
2873err_out_release_regions:
2874 pci_release_regions(pdev);
2875err_out_disable_pdev:
2876 pci_disable_device(pdev);
2877err_out:
2878 return rc;
2879}
2880
2881static void __devexit
2882jme_remove_one(struct pci_dev *pdev)
2883{
2884 struct net_device *netdev = pci_get_drvdata(pdev);
2885 struct jme_adapter *jme = netdev_priv(netdev);
2886
2887 unregister_netdev(netdev);
2888 pci_free_consistent(pdev,
2889 sizeof(u32) * SHADOW_REG_NR,
2890 jme->shadow_regs,
2891 jme->shadow_dma);
2892 iounmap(jme->regs);
2893 pci_set_drvdata(pdev, NULL);
2894 free_netdev(netdev);
2895 pci_release_regions(pdev);
2896 pci_disable_device(pdev);
2897
2898}
2899
2900static int
2901jme_suspend(struct pci_dev *pdev, pm_message_t state)
2902{
2903 struct net_device *netdev = pci_get_drvdata(pdev);
2904 struct jme_adapter *jme = netdev_priv(netdev);
2905
2906 atomic_dec(&jme->link_changing);
2907
2908 netif_device_detach(netdev);
2909 netif_stop_queue(netdev);
2910 jme_stop_irq(jme);
2911
2912 tasklet_disable(&jme->txclean_task);
2913 tasklet_disable(&jme->rxclean_task);
2914 tasklet_disable(&jme->rxempty_task);
2915
2916 jme_disable_shadow(jme);
2917
2918 if (netif_carrier_ok(netdev)) {
2919 if (test_bit(JME_FLAG_POLL, &jme->flags))
2920 jme_polling_mode(jme);
2921
2922 jme_stop_pcc_timer(jme);
2923 jme_reset_ghc_speed(jme);
2924 jme_disable_rx_engine(jme);
2925 jme_disable_tx_engine(jme);
2926 jme_reset_mac_processor(jme);
2927 jme_free_rx_resources(jme);
2928 jme_free_tx_resources(jme);
2929 netif_carrier_off(netdev);
2930 jme->phylink = 0;
2931 }
2932
2933 tasklet_enable(&jme->txclean_task);
2934 tasklet_hi_enable(&jme->rxclean_task);
2935 tasklet_hi_enable(&jme->rxempty_task);
2936
2937 pci_save_state(pdev);
2938 if (jme->reg_pmcs) {
2939 jme_set_100m_half(jme);
2940
2941 if (jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN))
2942 jme_wait_link(jme);
2943
2944 jwrite32(jme, JME_PMCS, jme->reg_pmcs);
2945
2946 pci_enable_wake(pdev, PCI_D3cold, true);
2947 } else {
2948 jme_phy_off(jme);
2949 }
2950 pci_set_power_state(pdev, PCI_D3cold);
2951
2952 return 0;
2953}
2954
2955static int
2956jme_resume(struct pci_dev *pdev)
2957{
2958 struct net_device *netdev = pci_get_drvdata(pdev);
2959 struct jme_adapter *jme = netdev_priv(netdev);
2960
2961 jme_clear_pm(jme);
2962 pci_restore_state(pdev);
2963
2964 if (test_bit(JME_FLAG_SSET, &jme->flags))
2965 jme_set_settings(netdev, &jme->old_ecmd);
2966 else
2967 jme_reset_phy_processor(jme);
2968
2969 jme_enable_shadow(jme);
2970 jme_start_irq(jme);
2971 netif_device_attach(netdev);
2972
2973 atomic_inc(&jme->link_changing);
2974
2975 jme_reset_link(jme);
2976
2977 return 0;
2978}
2979
2980static struct pci_device_id jme_pci_tbl[] = {
2981 { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMC250) },
2982 { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMC260) },
2983 { }
2984};
2985
2986static struct pci_driver jme_driver = {
2987 .name = DRV_NAME,
2988 .id_table = jme_pci_tbl,
2989 .probe = jme_init_one,
2990 .remove = __devexit_p(jme_remove_one),
2991#ifdef CONFIG_PM
2992 .suspend = jme_suspend,
2993 .resume = jme_resume,
2994#endif /* CONFIG_PM */
2995};
2996
2997static int __init
2998jme_init_module(void)
2999{
3000 printk(KERN_INFO PFX "JMicron JMC250 gigabit ethernet "
3001 "driver version %s\n", DRV_VERSION);
3002 return pci_register_driver(&jme_driver);
3003}
3004
3005static void __exit
3006jme_cleanup_module(void)
3007{
3008 pci_unregister_driver(&jme_driver);
3009}
3010
3011module_init(jme_init_module);
3012module_exit(jme_cleanup_module);
3013
3014MODULE_AUTHOR("Guo-Fu Tseng <cooldavid@cooldavid.org>");
3015MODULE_DESCRIPTION("JMicron JMC2x0 PCI Express Ethernet driver");
3016MODULE_LICENSE("GPL");
3017MODULE_VERSION(DRV_VERSION);
3018MODULE_DEVICE_TABLE(pci, jme_pci_tbl);
3019
JMicron Ethernet Linux driver