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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/module.h>
25#include <linux/kernel.h>
26#include <linux/pci.h>
27#include <linux/netdevice.h>
28#include <linux/etherdevice.h>
29#include <linux/ethtool.h>
30#include <linux/mii.h>
31#include <linux/crc32.h>
32#include <linux/delay.h>
33#include <linux/spinlock.h>
34#include <linux/in.h>
35#include <linux/ip.h>
36#include <linux/ipv6.h>
37#include <linux/tcp.h>
38#include <linux/udp.h>
39#include <linux/if_vlan.h>
40#include <linux/slab.h>
41#include <net/ip6_checksum.h>
42#include "jme.h"
43
44static int force_pseudohp = -1;
45static int no_pseudohp = -1;
46static int no_extplug = -1;
47module_param(force_pseudohp, int, 0);
48MODULE_PARM_DESC(force_pseudohp,
49 "Enable pseudo hot-plug feature manually by driver instead of BIOS.");
50module_param(no_pseudohp, int, 0);
51MODULE_PARM_DESC(no_pseudohp, "Disable pseudo hot-plug feature.");
52module_param(no_extplug, int, 0);
53MODULE_PARM_DESC(no_extplug,
54 "Do not use external plug signal for pseudo hot-plug.");
55
56static int
57jme_mdio_read(struct net_device *netdev, int phy, int reg)
58{
59 struct jme_adapter *jme = netdev_priv(netdev);
60 int i, val, again = (reg == MII_BMSR) ? 1 : 0;
61
62read_again:
63 jwrite32(jme, JME_SMI, SMI_OP_REQ |
64 smi_phy_addr(phy) |
65 smi_reg_addr(reg));
66
67 wmb();
68 for (i = JME_PHY_TIMEOUT * 50 ; i > 0 ; --i) {
69 udelay(20);
70 val = jread32(jme, JME_SMI);
71 if ((val & SMI_OP_REQ) == 0)
72 break;
73 }
74
75 if (i == 0) {
76 jeprintk(jme->pdev, "phy(%d) read timeout : %d\n", phy, reg);
77 return 0;
78 }
79
80 if (again--)
81 goto read_again;
82
83 return (val & SMI_DATA_MASK) >> SMI_DATA_SHIFT;
84}
85
86static void
87jme_mdio_write(struct net_device *netdev,
88 int phy, int reg, int val)
89{
90 struct jme_adapter *jme = netdev_priv(netdev);
91 int i;
92
93 jwrite32(jme, JME_SMI, SMI_OP_WRITE | SMI_OP_REQ |
94 ((val << SMI_DATA_SHIFT) & SMI_DATA_MASK) |
95 smi_phy_addr(phy) | smi_reg_addr(reg));
96
97 wmb();
98 for (i = JME_PHY_TIMEOUT * 50 ; i > 0 ; --i) {
99 udelay(20);
100 if ((jread32(jme, JME_SMI) & SMI_OP_REQ) == 0)
101 break;
102 }
103
104 if (i == 0)
105 jeprintk(jme->pdev, "phy(%d) write timeout : %d\n", phy, reg);
106
107 return;
108}
109
110static inline void
111jme_reset_phy_processor(struct jme_adapter *jme)
112{
113 u32 val;
114
115 jme_mdio_write(jme->dev,
116 jme->mii_if.phy_id,
117 MII_ADVERTISE, ADVERTISE_ALL |
118 ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
119
120 if (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC250)
121 jme_mdio_write(jme->dev,
122 jme->mii_if.phy_id,
123 MII_CTRL1000,
124 ADVERTISE_1000FULL | ADVERTISE_1000HALF);
125
126 val = jme_mdio_read(jme->dev,
127 jme->mii_if.phy_id,
128 MII_BMCR);
129
130 jme_mdio_write(jme->dev,
131 jme->mii_if.phy_id,
132 MII_BMCR, val | BMCR_RESET);
133
134 return;
135}
136
137static void
138jme_setup_wakeup_frame(struct jme_adapter *jme,
139 u32 *mask, u32 crc, int fnr)
140{
141 int i;
142
143 /*
144 * Setup CRC pattern
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 * Setup Mask
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_reset_mac_processor(struct jme_adapter *jme)
166{
167 u32 mask[WAKEUP_FRAME_MASK_DWNR] = {0, 0, 0, 0};
168 u32 crc = 0xCDCDCDCD;
169 u32 gpreg0;
170 int i;
171
172 jwrite32(jme, JME_GHC, jme->reg_ghc | GHC_SWRST);
173 udelay(2);
174 jwrite32(jme, JME_GHC, jme->reg_ghc);
175
176 jwrite32(jme, JME_RXDBA_LO, 0x00000000);
177 jwrite32(jme, JME_RXDBA_HI, 0x00000000);
178 jwrite32(jme, JME_RXQDC, 0x00000000);
179 jwrite32(jme, JME_RXNDA, 0x00000000);
180 jwrite32(jme, JME_TXDBA_LO, 0x00000000);
181 jwrite32(jme, JME_TXDBA_HI, 0x00000000);
182 jwrite32(jme, JME_TXQDC, 0x00000000);
183 jwrite32(jme, JME_TXNDA, 0x00000000);
184
185 jwrite32(jme, JME_RXMCHT_LO, 0x00000000);
186 jwrite32(jme, JME_RXMCHT_HI, 0x00000000);
187 for (i = 0 ; i < WAKEUP_FRAME_NR ; ++i)
188 jme_setup_wakeup_frame(jme, mask, crc, i);
189 if (jme->fpgaver)
190 gpreg0 = GPREG0_DEFAULT | GPREG0_LNKINTPOLL;
191 else
192 gpreg0 = GPREG0_DEFAULT;
193 jwrite32(jme, JME_GPREG0, gpreg0);
194 jwrite32(jme, JME_GPREG1, GPREG1_DEFAULT);
195}
196
197static inline void
198jme_reset_ghc_speed(struct jme_adapter *jme)
199{
200 jme->reg_ghc &= ~(GHC_SPEED_1000M | GHC_DPX);
201 jwrite32(jme, JME_GHC, jme->reg_ghc);
202}
203
204static inline void
205jme_clear_pm(struct jme_adapter *jme)
206{
207 jwrite32(jme, JME_PMCS, 0xFFFF0000 | jme->reg_pmcs);
208 pci_set_power_state(jme->pdev, PCI_D0);
209 pci_enable_wake(jme->pdev, PCI_D0, false);
210}
211
212static int
213jme_reload_eeprom(struct jme_adapter *jme)
214{
215 u32 val;
216 int i;
217
218 val = jread32(jme, JME_SMBCSR);
219
220 if (val & SMBCSR_EEPROMD) {
221 val |= SMBCSR_CNACK;
222 jwrite32(jme, JME_SMBCSR, val);
223 val |= SMBCSR_RELOAD;
224 jwrite32(jme, JME_SMBCSR, val);
225 mdelay(12);
226
227 for (i = JME_EEPROM_RELOAD_TIMEOUT; i > 0; --i) {
228 mdelay(1);
229 if ((jread32(jme, JME_SMBCSR) & SMBCSR_RELOAD) == 0)
230 break;
231 }
232
233 if (i == 0) {
234 jeprintk(jme->pdev, "eeprom reload timeout\n");
235 return -EIO;
236 }
237 }
238
239 return 0;
240}
241
242static void
243jme_load_macaddr(struct net_device *netdev)
244{
245 struct jme_adapter *jme = netdev_priv(netdev);
246 unsigned char macaddr[6];
247 u32 val;
248
249 spin_lock_bh(&jme->macaddr_lock);
250 val = jread32(jme, JME_RXUMA_LO);
251 macaddr[0] = (val >> 0) & 0xFF;
252 macaddr[1] = (val >> 8) & 0xFF;
253 macaddr[2] = (val >> 16) & 0xFF;
254 macaddr[3] = (val >> 24) & 0xFF;
255 val = jread32(jme, JME_RXUMA_HI);
256 macaddr[4] = (val >> 0) & 0xFF;
257 macaddr[5] = (val >> 8) & 0xFF;
258 memcpy(netdev->dev_addr, macaddr, 6);
259 spin_unlock_bh(&jme->macaddr_lock);
260}
261
262static inline void
263jme_set_rx_pcc(struct jme_adapter *jme, int p)
264{
265 switch (p) {
266 case PCC_OFF:
267 jwrite32(jme, JME_PCCRX0,
268 ((PCC_OFF_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
269 ((PCC_OFF_CNT << PCCRX_SHIFT) & PCCRX_MASK));
270 break;
271 case PCC_P1:
272 jwrite32(jme, JME_PCCRX0,
273 ((PCC_P1_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
274 ((PCC_P1_CNT << PCCRX_SHIFT) & PCCRX_MASK));
275 break;
276 case PCC_P2:
277 jwrite32(jme, JME_PCCRX0,
278 ((PCC_P2_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
279 ((PCC_P2_CNT << PCCRX_SHIFT) & PCCRX_MASK));
280 break;
281 case PCC_P3:
282 jwrite32(jme, JME_PCCRX0,
283 ((PCC_P3_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
284 ((PCC_P3_CNT << PCCRX_SHIFT) & PCCRX_MASK));
285 break;
286 default:
287 break;
288 }
289 wmb();
290
291 if (!(test_bit(JME_FLAG_POLL, &jme->flags)))
292 netif_info(jme, rx_status, jme->dev, "Switched to PCC_P%d\n", p);
293}
294
295static void
296jme_start_irq(struct jme_adapter *jme)
297{
298 register struct dynpcc_info *dpi = &(jme->dpi);
299
300 jme_set_rx_pcc(jme, PCC_P1);
301 dpi->cur = PCC_P1;
302 dpi->attempt = PCC_P1;
303 dpi->cnt = 0;
304
305 jwrite32(jme, JME_PCCTX,
306 ((PCC_TX_TO << PCCTXTO_SHIFT) & PCCTXTO_MASK) |
307 ((PCC_TX_CNT << PCCTX_SHIFT) & PCCTX_MASK) |
308 PCCTXQ0_EN
309 );
310
311 /*
312 * Enable Interrupts
313 */
314 jwrite32(jme, JME_IENS, INTR_ENABLE);
315}
316
317static inline void
318jme_stop_irq(struct jme_adapter *jme)
319{
320 /*
321 * Disable Interrupts
322 */
323 jwrite32f(jme, JME_IENC, INTR_ENABLE);
324}
325
326static u32
327jme_linkstat_from_phy(struct jme_adapter *jme)
328{
329 u32 phylink, bmsr;
330
331 phylink = jme_mdio_read(jme->dev, jme->mii_if.phy_id, 17);
332 bmsr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMSR);
333 if (bmsr & BMSR_ANCOMP)
334 phylink |= PHY_LINK_AUTONEG_COMPLETE;
335
336 return phylink;
337}
338
339static inline void
340jme_set_phyfifoa(struct jme_adapter *jme)
341{
342 jme_mdio_write(jme->dev, jme->mii_if.phy_id, 27, 0x0004);
343}
344
345static inline void
346jme_set_phyfifob(struct jme_adapter *jme)
347{
348 jme_mdio_write(jme->dev, jme->mii_if.phy_id, 27, 0x0000);
349}
350
351static int
352jme_check_link(struct net_device *netdev, int testonly)
353{
354 struct jme_adapter *jme = netdev_priv(netdev);
355 u32 phylink, ghc, cnt = JME_SPDRSV_TIMEOUT, bmcr, gpreg1;
356 char linkmsg[64];
357 int rc = 0;
358
359 linkmsg[0] = '\0';
360
361 if (jme->fpgaver)
362 phylink = jme_linkstat_from_phy(jme);
363 else
364 phylink = jread32(jme, JME_PHY_LINK);
365
366 if (phylink & PHY_LINK_UP) {
367 if (!(phylink & PHY_LINK_AUTONEG_COMPLETE)) {
368 /*
369 * If we did not enable AN
370 * Speed/Duplex Info should be obtained from SMI
371 */
372 phylink = PHY_LINK_UP;
373
374 bmcr = jme_mdio_read(jme->dev,
375 jme->mii_if.phy_id,
376 MII_BMCR);
377
378 phylink |= ((bmcr & BMCR_SPEED1000) &&
379 (bmcr & BMCR_SPEED100) == 0) ?
380 PHY_LINK_SPEED_1000M :
381 (bmcr & BMCR_SPEED100) ?
382 PHY_LINK_SPEED_100M :
383 PHY_LINK_SPEED_10M;
384
385 phylink |= (bmcr & BMCR_FULLDPLX) ?
386 PHY_LINK_DUPLEX : 0;
387
388 strcat(linkmsg, "Forced: ");
389 } else {
390 /*
391 * Keep polling for speed/duplex resolve complete
392 */
393 while (!(phylink & PHY_LINK_SPEEDDPU_RESOLVED) &&
394 --cnt) {
395
396 udelay(1);
397
398 if (jme->fpgaver)
399 phylink = jme_linkstat_from_phy(jme);
400 else
401 phylink = jread32(jme, JME_PHY_LINK);
402 }
403 if (!cnt)
404 jeprintk(jme->pdev,
405 "Waiting speed resolve timeout.\n");
406
407 strcat(linkmsg, "ANed: ");
408 }
409
410 if (jme->phylink == phylink) {
411 rc = 1;
412 goto out;
413 }
414 if (testonly)
415 goto out;
416
417 jme->phylink = phylink;
418
419 ghc = jme->reg_ghc & ~(GHC_SPEED | GHC_DPX |
420 GHC_TO_CLK_PCIE | GHC_TXMAC_CLK_PCIE |
421 GHC_TO_CLK_GPHY | GHC_TXMAC_CLK_GPHY);
422 switch (phylink & PHY_LINK_SPEED_MASK) {
423 case PHY_LINK_SPEED_10M:
424 ghc |= GHC_SPEED_10M |
425 GHC_TO_CLK_PCIE | GHC_TXMAC_CLK_PCIE;
426 strcat(linkmsg, "10 Mbps, ");
427 break;
428 case PHY_LINK_SPEED_100M:
429 ghc |= GHC_SPEED_100M |
430 GHC_TO_CLK_PCIE | GHC_TXMAC_CLK_PCIE;
431 strcat(linkmsg, "100 Mbps, ");
432 break;
433 case PHY_LINK_SPEED_1000M:
434 ghc |= GHC_SPEED_1000M |
435 GHC_TO_CLK_GPHY | GHC_TXMAC_CLK_GPHY;
436 strcat(linkmsg, "1000 Mbps, ");
437 break;
438 default:
439 break;
440 }
441
442 if (phylink & PHY_LINK_DUPLEX) {
443 jwrite32(jme, JME_TXMCS, TXMCS_DEFAULT);
444 ghc |= GHC_DPX;
445 } else {
446 jwrite32(jme, JME_TXMCS, TXMCS_DEFAULT |
447 TXMCS_BACKOFF |
448 TXMCS_CARRIERSENSE |
449 TXMCS_COLLISION);
450 jwrite32(jme, JME_TXTRHD, TXTRHD_TXPEN |
451 ((0x2000 << TXTRHD_TXP_SHIFT) & TXTRHD_TXP) |
452 TXTRHD_TXREN |
453 ((8 << TXTRHD_TXRL_SHIFT) & TXTRHD_TXRL));
454 }
455
456 gpreg1 = GPREG1_DEFAULT;
457 if (is_buggy250(jme->pdev->device, jme->chiprev)) {
458 if (!(phylink & PHY_LINK_DUPLEX))
459 gpreg1 |= GPREG1_HALFMODEPATCH;
460 switch (phylink & PHY_LINK_SPEED_MASK) {
461 case PHY_LINK_SPEED_10M:
462 jme_set_phyfifoa(jme);
463 gpreg1 |= GPREG1_RSSPATCH;
464 break;
465 case PHY_LINK_SPEED_100M:
466 jme_set_phyfifob(jme);
467 gpreg1 |= GPREG1_RSSPATCH;
468 break;
469 case PHY_LINK_SPEED_1000M:
470 jme_set_phyfifoa(jme);
471 break;
472 default:
473 break;
474 }
475 }
476
477 jwrite32(jme, JME_GPREG1, gpreg1);
478 jwrite32(jme, JME_GHC, ghc);
479 jme->reg_ghc = ghc;
480
481 strcat(linkmsg, (phylink & PHY_LINK_DUPLEX) ?
482 "Full-Duplex, " :
483 "Half-Duplex, ");
484 strcat(linkmsg, (phylink & PHY_LINK_MDI_STAT) ?
485 "MDI-X" :
486 "MDI");
487 netif_info(jme, link, jme->dev, "Link is up at %s.\n", linkmsg);
488 netif_carrier_on(netdev);
489 } else {
490 if (testonly)
491 goto out;
492
493 netif_info(jme, link, jme->dev, "Link is down.\n");
494 jme->phylink = 0;
495 netif_carrier_off(netdev);
496 }
497
498out:
499 return rc;
500}
501
502static int
503jme_setup_tx_resources(struct jme_adapter *jme)
504{
505 struct jme_ring *txring = &(jme->txring[0]);
506
507 txring->alloc = dma_alloc_coherent(&(jme->pdev->dev),
508 TX_RING_ALLOC_SIZE(jme->tx_ring_size),
509 &(txring->dmaalloc),
510 GFP_ATOMIC);
511
512 if (!txring->alloc)
513 goto err_set_null;
514
515 /*
516 * 16 Bytes align
517 */
518 txring->desc = (void *)ALIGN((unsigned long)(txring->alloc),
519 RING_DESC_ALIGN);
520 txring->dma = ALIGN(txring->dmaalloc, RING_DESC_ALIGN);
521 txring->next_to_use = 0;
522 atomic_set(&txring->next_to_clean, 0);
523 atomic_set(&txring->nr_free, jme->tx_ring_size);
524
525 txring->bufinf = kmalloc(sizeof(struct jme_buffer_info) *
526 jme->tx_ring_size, GFP_ATOMIC);
527 if (unlikely(!(txring->bufinf)))
528 goto err_free_txring;
529
530 /*
531 * Initialize Transmit Descriptors
532 */
533 memset(txring->alloc, 0, TX_RING_ALLOC_SIZE(jme->tx_ring_size));
534 memset(txring->bufinf, 0,
535 sizeof(struct jme_buffer_info) * jme->tx_ring_size);
536
537 return 0;
538
539err_free_txring:
540 dma_free_coherent(&(jme->pdev->dev),
541 TX_RING_ALLOC_SIZE(jme->tx_ring_size),
542 txring->alloc,
543 txring->dmaalloc);
544
545err_set_null:
546 txring->desc = NULL;
547 txring->dmaalloc = 0;
548 txring->dma = 0;
549 txring->bufinf = NULL;
550
551 return -ENOMEM;
552}
553
554static void
555jme_free_tx_resources(struct jme_adapter *jme)
556{
557 int i;
558 struct jme_ring *txring = &(jme->txring[0]);
559 struct jme_buffer_info *txbi;
560
561 if (txring->alloc) {
562 if (txring->bufinf) {
563 for (i = 0 ; i < jme->tx_ring_size ; ++i) {
564 txbi = txring->bufinf + i;
565 if (txbi->skb) {
566 dev_kfree_skb(txbi->skb);
567 txbi->skb = NULL;
568 }
569 txbi->mapping = 0;
570 txbi->len = 0;
571 txbi->nr_desc = 0;
572 txbi->start_xmit = 0;
573 }
574 kfree(txring->bufinf);
575 }
576
577 dma_free_coherent(&(jme->pdev->dev),
578 TX_RING_ALLOC_SIZE(jme->tx_ring_size),
579 txring->alloc,
580 txring->dmaalloc);
581
582 txring->alloc = NULL;
583 txring->desc = NULL;
584 txring->dmaalloc = 0;
585 txring->dma = 0;
586 txring->bufinf = NULL;
587 }
588 txring->next_to_use = 0;
589 atomic_set(&txring->next_to_clean, 0);
590 atomic_set(&txring->nr_free, 0);
591}
592
593static inline void
594jme_enable_tx_engine(struct jme_adapter *jme)
595{
596 /*
597 * Select Queue 0
598 */
599 jwrite32(jme, JME_TXCS, TXCS_DEFAULT | TXCS_SELECT_QUEUE0);
600 wmb();
601
602 /*
603 * Setup TX Queue 0 DMA Bass Address
604 */
605 jwrite32(jme, JME_TXDBA_LO, (__u64)jme->txring[0].dma & 0xFFFFFFFFUL);
606 jwrite32(jme, JME_TXDBA_HI, (__u64)(jme->txring[0].dma) >> 32);
607 jwrite32(jme, JME_TXNDA, (__u64)jme->txring[0].dma & 0xFFFFFFFFUL);
608
609 /*
610 * Setup TX Descptor Count
611 */
612 jwrite32(jme, JME_TXQDC, jme->tx_ring_size);
613
614 /*
615 * Enable TX Engine
616 */
617 wmb();
618 jwrite32(jme, JME_TXCS, jme->reg_txcs |
619 TXCS_SELECT_QUEUE0 |
620 TXCS_ENABLE);
621
622}
623
624static inline void
625jme_restart_tx_engine(struct jme_adapter *jme)
626{
627 /*
628 * Restart TX Engine
629 */
630 jwrite32(jme, JME_TXCS, jme->reg_txcs |
631 TXCS_SELECT_QUEUE0 |
632 TXCS_ENABLE);
633}
634
635static inline void
636jme_disable_tx_engine(struct jme_adapter *jme)
637{
638 int i;
639 u32 val;
640
641 /*
642 * Disable TX Engine
643 */
644 jwrite32(jme, JME_TXCS, jme->reg_txcs | TXCS_SELECT_QUEUE0);
645 wmb();
646
647 val = jread32(jme, JME_TXCS);
648 for (i = JME_TX_DISABLE_TIMEOUT ; (val & TXCS_ENABLE) && i > 0 ; --i) {
649 mdelay(1);
650 val = jread32(jme, JME_TXCS);
651 rmb();
652 }
653
654 if (!i)
655 jeprintk(jme->pdev, "Disable TX engine timeout.\n");
656}
657
658static void
659jme_set_clean_rxdesc(struct jme_adapter *jme, int i)
660{
661 struct jme_ring *rxring = &(jme->rxring[0]);
662 register struct rxdesc *rxdesc = rxring->desc;
663 struct jme_buffer_info *rxbi = rxring->bufinf;
664 rxdesc += i;
665 rxbi += i;
666
667 rxdesc->dw[0] = 0;
668 rxdesc->dw[1] = 0;
669 rxdesc->desc1.bufaddrh = cpu_to_le32((__u64)rxbi->mapping >> 32);
670 rxdesc->desc1.bufaddrl = cpu_to_le32(
671 (__u64)rxbi->mapping & 0xFFFFFFFFUL);
672 rxdesc->desc1.datalen = cpu_to_le16(rxbi->len);
673 if (jme->dev->features & NETIF_F_HIGHDMA)
674 rxdesc->desc1.flags = RXFLAG_64BIT;
675 wmb();
676 rxdesc->desc1.flags |= RXFLAG_OWN | RXFLAG_INT;
677}
678
679static int
680jme_make_new_rx_buf(struct jme_adapter *jme, int i)
681{
682 struct jme_ring *rxring = &(jme->rxring[0]);
683 struct jme_buffer_info *rxbi = rxring->bufinf + i;
684 struct sk_buff *skb;
685
686 skb = netdev_alloc_skb(jme->dev,
687 jme->dev->mtu + RX_EXTRA_LEN);
688 if (unlikely(!skb))
689 return -ENOMEM;
690
691 rxbi->skb = skb;
692 rxbi->len = skb_tailroom(skb);
693 rxbi->mapping = pci_map_page(jme->pdev,
694 virt_to_page(skb->data),
695 offset_in_page(skb->data),
696 rxbi->len,
697 PCI_DMA_FROMDEVICE);
698
699 return 0;
700}
701
702static void
703jme_free_rx_buf(struct jme_adapter *jme, int i)
704{
705 struct jme_ring *rxring = &(jme->rxring[0]);
706 struct jme_buffer_info *rxbi = rxring->bufinf;
707 rxbi += i;
708
709 if (rxbi->skb) {
710 pci_unmap_page(jme->pdev,
711 rxbi->mapping,
712 rxbi->len,
713 PCI_DMA_FROMDEVICE);
714 dev_kfree_skb(rxbi->skb);
715 rxbi->skb = NULL;
716 rxbi->mapping = 0;
717 rxbi->len = 0;
718 }
719}
720
721static void
722jme_free_rx_resources(struct jme_adapter *jme)
723{
724 int i;
725 struct jme_ring *rxring = &(jme->rxring[0]);
726
727 if (rxring->alloc) {
728 if (rxring->bufinf) {
729 for (i = 0 ; i < jme->rx_ring_size ; ++i)
730 jme_free_rx_buf(jme, i);
731 kfree(rxring->bufinf);
732 }
733
734 dma_free_coherent(&(jme->pdev->dev),
735 RX_RING_ALLOC_SIZE(jme->rx_ring_size),
736 rxring->alloc,
737 rxring->dmaalloc);
738 rxring->alloc = NULL;
739 rxring->desc = NULL;
740 rxring->dmaalloc = 0;
741 rxring->dma = 0;
742 rxring->bufinf = NULL;
743 }
744 rxring->next_to_use = 0;
745 atomic_set(&rxring->next_to_clean, 0);
746}
747
748static int
749jme_setup_rx_resources(struct jme_adapter *jme)
750{
751 int i;
752 struct jme_ring *rxring = &(jme->rxring[0]);
753
754 rxring->alloc = dma_alloc_coherent(&(jme->pdev->dev),
755 RX_RING_ALLOC_SIZE(jme->rx_ring_size),
756 &(rxring->dmaalloc),
757 GFP_ATOMIC);
758 if (!rxring->alloc)
759 goto err_set_null;
760
761 /*
762 * 16 Bytes align
763 */
764 rxring->desc = (void *)ALIGN((unsigned long)(rxring->alloc),
765 RING_DESC_ALIGN);
766 rxring->dma = ALIGN(rxring->dmaalloc, RING_DESC_ALIGN);
767 rxring->next_to_use = 0;
768 atomic_set(&rxring->next_to_clean, 0);
769
770 rxring->bufinf = kmalloc(sizeof(struct jme_buffer_info) *
771 jme->rx_ring_size, GFP_ATOMIC);
772 if (unlikely(!(rxring->bufinf)))
773 goto err_free_rxring;
774
775 /*
776 * Initiallize Receive Descriptors
777 */
778 memset(rxring->bufinf, 0,
779 sizeof(struct jme_buffer_info) * jme->rx_ring_size);
780 for (i = 0 ; i < jme->rx_ring_size ; ++i) {
781 if (unlikely(jme_make_new_rx_buf(jme, i))) {
782 jme_free_rx_resources(jme);
783 return -ENOMEM;
784 }
785
786 jme_set_clean_rxdesc(jme, i);
787 }
788
789 return 0;
790
791err_free_rxring:
792 dma_free_coherent(&(jme->pdev->dev),
793 RX_RING_ALLOC_SIZE(jme->rx_ring_size),
794 rxring->alloc,
795 rxring->dmaalloc);
796err_set_null:
797 rxring->desc = NULL;
798 rxring->dmaalloc = 0;
799 rxring->dma = 0;
800 rxring->bufinf = NULL;
801
802 return -ENOMEM;
803}
804
805static inline void
806jme_enable_rx_engine(struct jme_adapter *jme)
807{
808 /*
809 * Select Queue 0
810 */
811 jwrite32(jme, JME_RXCS, jme->reg_rxcs |
812 RXCS_QUEUESEL_Q0);
813 wmb();
814
815 /*
816 * Setup RX DMA Bass Address
817 */
818 jwrite32(jme, JME_RXDBA_LO, (__u64)(jme->rxring[0].dma) & 0xFFFFFFFFUL);
819 jwrite32(jme, JME_RXDBA_HI, (__u64)(jme->rxring[0].dma) >> 32);
820 jwrite32(jme, JME_RXNDA, (__u64)(jme->rxring[0].dma) & 0xFFFFFFFFUL);
821
822 /*
823 * Setup RX Descriptor Count
824 */
825 jwrite32(jme, JME_RXQDC, jme->rx_ring_size);
826
827 /*
828 * Setup Unicast Filter
829 */
830 jme_set_multi(jme->dev);
831
832 /*
833 * Enable RX Engine
834 */
835 wmb();
836 jwrite32(jme, JME_RXCS, jme->reg_rxcs |
837 RXCS_QUEUESEL_Q0 |
838 RXCS_ENABLE |
839 RXCS_QST);
840}
841
842static inline void
843jme_restart_rx_engine(struct jme_adapter *jme)
844{
845 /*
846 * Start RX Engine
847 */
848 jwrite32(jme, JME_RXCS, jme->reg_rxcs |
849 RXCS_QUEUESEL_Q0 |
850 RXCS_ENABLE |
851 RXCS_QST);
852}
853
854static inline void
855jme_disable_rx_engine(struct jme_adapter *jme)
856{
857 int i;
858 u32 val;
859
860 /*
861 * Disable RX Engine
862 */
863 jwrite32(jme, JME_RXCS, jme->reg_rxcs);
864 wmb();
865
866 val = jread32(jme, JME_RXCS);
867 for (i = JME_RX_DISABLE_TIMEOUT ; (val & RXCS_ENABLE) && i > 0 ; --i) {
868 mdelay(1);
869 val = jread32(jme, JME_RXCS);
870 rmb();
871 }
872
873 if (!i)
874 jeprintk(jme->pdev, "Disable RX engine timeout.\n");
875
876}
877
878static int
879jme_rxsum_ok(struct jme_adapter *jme, u16 flags)
880{
881 if (!(flags & (RXWBFLAG_TCPON | RXWBFLAG_UDPON | RXWBFLAG_IPV4)))
882 return false;
883
884 if (unlikely((flags & (RXWBFLAG_MF | RXWBFLAG_TCPON | RXWBFLAG_TCPCS))
885 == RXWBFLAG_TCPON)) {
886 if (flags & RXWBFLAG_IPV4)
887 netif_err(jme, rx_err, jme->dev, "TCP Checksum error\n");
888 return false;
889 }
890
891 if (unlikely((flags & (RXWBFLAG_MF | RXWBFLAG_UDPON | RXWBFLAG_UDPCS))
892 == RXWBFLAG_UDPON)) {
893 if (flags & RXWBFLAG_IPV4)
894 netif_err(jme, rx_err, jme->dev, "UDP Checksum error.\n");
895 return false;
896 }
897
898 if (unlikely((flags & (RXWBFLAG_IPV4 | RXWBFLAG_IPCS))
899 == RXWBFLAG_IPV4)) {
900 netif_err(jme, rx_err, jme->dev, "IPv4 Checksum error.\n");
901 return false;
902 }
903
904 return true;
905}
906
907static void
908jme_alloc_and_feed_skb(struct jme_adapter *jme, int idx)
909{
910 struct jme_ring *rxring = &(jme->rxring[0]);
911 struct rxdesc *rxdesc = rxring->desc;
912 struct jme_buffer_info *rxbi = rxring->bufinf;
913 struct sk_buff *skb;
914 int framesize;
915
916 rxdesc += idx;
917 rxbi += idx;
918
919 skb = rxbi->skb;
920 pci_dma_sync_single_for_cpu(jme->pdev,
921 rxbi->mapping,
922 rxbi->len,
923 PCI_DMA_FROMDEVICE);
924
925 if (unlikely(jme_make_new_rx_buf(jme, idx))) {
926 pci_dma_sync_single_for_device(jme->pdev,
927 rxbi->mapping,
928 rxbi->len,
929 PCI_DMA_FROMDEVICE);
930
931 ++(NET_STAT(jme).rx_dropped);
932 } else {
933 framesize = le16_to_cpu(rxdesc->descwb.framesize)
934 - RX_PREPAD_SIZE;
935
936 skb_reserve(skb, RX_PREPAD_SIZE);
937 skb_put(skb, framesize);
938 skb->protocol = eth_type_trans(skb, jme->dev);
939
940 if (jme_rxsum_ok(jme, le16_to_cpu(rxdesc->descwb.flags)))
941 skb->ip_summed = CHECKSUM_UNNECESSARY;
942 else
943 skb->ip_summed = CHECKSUM_NONE;
944
945 if (rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_TAGON)) {
946 if (jme->vlgrp) {
947 jme->jme_vlan_rx(skb, jme->vlgrp,
948 le16_to_cpu(rxdesc->descwb.vlan));
949 NET_STAT(jme).rx_bytes += 4;
950 } else {
951 dev_kfree_skb(skb);
952 }
953 } else {
954 jme->jme_rx(skb);
955 }
956
957 if ((rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_DEST)) ==
958 cpu_to_le16(RXWBFLAG_DEST_MUL))
959 ++(NET_STAT(jme).multicast);
960
961 NET_STAT(jme).rx_bytes += framesize;
962 ++(NET_STAT(jme).rx_packets);
963 }
964
965 jme_set_clean_rxdesc(jme, idx);
966
967}
968
969static int
970jme_process_receive(struct jme_adapter *jme, int limit)
971{
972 struct jme_ring *rxring = &(jme->rxring[0]);
973 struct rxdesc *rxdesc = rxring->desc;
974 int i, j, ccnt, desccnt, mask = jme->rx_ring_mask;
975
976 if (unlikely(!atomic_dec_and_test(&jme->rx_cleaning)))
977 goto out_inc;
978
979 if (unlikely(atomic_read(&jme->link_changing) != 1))
980 goto out_inc;
981
982 if (unlikely(!netif_carrier_ok(jme->dev)))
983 goto out_inc;
984
985 i = atomic_read(&rxring->next_to_clean);
986 while (limit > 0) {
987 rxdesc = rxring->desc;
988 rxdesc += i;
989
990 if ((rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_OWN)) ||
991 !(rxdesc->descwb.desccnt & RXWBDCNT_WBCPL))
992 goto out;
993 --limit;
994
995 desccnt = rxdesc->descwb.desccnt & RXWBDCNT_DCNT;
996
997 if (unlikely(desccnt > 1 ||
998 rxdesc->descwb.errstat & RXWBERR_ALLERR)) {
999
1000 if (rxdesc->descwb.errstat & RXWBERR_CRCERR)
1001 ++(NET_STAT(jme).rx_crc_errors);
1002 else if (rxdesc->descwb.errstat & RXWBERR_OVERUN)
1003 ++(NET_STAT(jme).rx_fifo_errors);
1004 else
1005 ++(NET_STAT(jme).rx_errors);
1006
1007 if (desccnt > 1)
1008 limit -= desccnt - 1;
1009
1010 for (j = i, ccnt = desccnt ; ccnt-- ; ) {
1011 jme_set_clean_rxdesc(jme, j);
1012 j = (j + 1) & (mask);
1013 }
1014
1015 } else {
1016 jme_alloc_and_feed_skb(jme, i);
1017 }
1018
1019 i = (i + desccnt) & (mask);
1020 }
1021
1022out:
1023 atomic_set(&rxring->next_to_clean, i);
1024
1025out_inc:
1026 atomic_inc(&jme->rx_cleaning);
1027
1028 return limit > 0 ? limit : 0;
1029
1030}
1031
1032static void
1033jme_attempt_pcc(struct dynpcc_info *dpi, int atmp)
1034{
1035 if (likely(atmp == dpi->cur)) {
1036 dpi->cnt = 0;
1037 return;
1038 }
1039
1040 if (dpi->attempt == atmp) {
1041 ++(dpi->cnt);
1042 } else {
1043 dpi->attempt = atmp;
1044 dpi->cnt = 0;
1045 }
1046
1047}
1048
1049static void
1050jme_dynamic_pcc(struct jme_adapter *jme)
1051{
1052 register struct dynpcc_info *dpi = &(jme->dpi);
1053
1054 if ((NET_STAT(jme).rx_bytes - dpi->last_bytes) > PCC_P3_THRESHOLD)
1055 jme_attempt_pcc(dpi, PCC_P3);
1056 else if ((NET_STAT(jme).rx_packets - dpi->last_pkts) > PCC_P2_THRESHOLD ||
1057 dpi->intr_cnt > PCC_INTR_THRESHOLD)
1058 jme_attempt_pcc(dpi, PCC_P2);
1059 else
1060 jme_attempt_pcc(dpi, PCC_P1);
1061
1062 if (unlikely(dpi->attempt != dpi->cur && dpi->cnt > 5)) {
1063 if (dpi->attempt < dpi->cur)
1064 tasklet_schedule(&jme->rxclean_task);
1065 jme_set_rx_pcc(jme, dpi->attempt);
1066 dpi->cur = dpi->attempt;
1067 dpi->cnt = 0;
1068 }
1069}
1070
1071static void
1072jme_start_pcc_timer(struct jme_adapter *jme)
1073{
1074 struct dynpcc_info *dpi = &(jme->dpi);
1075 dpi->last_bytes = NET_STAT(jme).rx_bytes;
1076 dpi->last_pkts = NET_STAT(jme).rx_packets;
1077 dpi->intr_cnt = 0;
1078 jwrite32(jme, JME_TMCSR,
1079 TMCSR_EN | ((0xFFFFFF - PCC_INTERVAL_US) & TMCSR_CNT));
1080}
1081
1082static inline void
1083jme_stop_pcc_timer(struct jme_adapter *jme)
1084{
1085 jwrite32(jme, JME_TMCSR, 0);
1086}
1087
1088static void
1089jme_shutdown_nic(struct jme_adapter *jme)
1090{
1091 u32 phylink;
1092
1093 phylink = jme_linkstat_from_phy(jme);
1094
1095 if (!(phylink & PHY_LINK_UP)) {
1096 /*
1097 * Disable all interrupt before issue timer
1098 */
1099 jme_stop_irq(jme);
1100 jwrite32(jme, JME_TIMER2, TMCSR_EN | 0xFFFFFE);
1101 }
1102}
1103
1104static void
1105jme_pcc_tasklet(unsigned long arg)
1106{
1107 struct jme_adapter *jme = (struct jme_adapter *)arg;
1108 struct net_device *netdev = jme->dev;
1109
1110 if (unlikely(test_bit(JME_FLAG_SHUTDOWN, &jme->flags))) {
1111 jme_shutdown_nic(jme);
1112 return;
1113 }
1114
1115 if (unlikely(!netif_carrier_ok(netdev) ||
1116 (atomic_read(&jme->link_changing) != 1)
1117 )) {
1118 jme_stop_pcc_timer(jme);
1119 return;
1120 }
1121
1122 if (!(test_bit(JME_FLAG_POLL, &jme->flags)))
1123 jme_dynamic_pcc(jme);
1124
1125 jme_start_pcc_timer(jme);
1126}
1127
1128static inline void
1129jme_polling_mode(struct jme_adapter *jme)
1130{
1131 jme_set_rx_pcc(jme, PCC_OFF);
1132}
1133
1134static inline void
1135jme_interrupt_mode(struct jme_adapter *jme)
1136{
1137 jme_set_rx_pcc(jme, PCC_P1);
1138}
1139
1140static inline int
1141jme_pseudo_hotplug_enabled(struct jme_adapter *jme)
1142{
1143 u32 apmc;
1144 apmc = jread32(jme, JME_APMC);
1145 return apmc & JME_APMC_PSEUDO_HP_EN;
1146}
1147
1148static void
1149jme_start_shutdown_timer(struct jme_adapter *jme)
1150{
1151 u32 apmc;
1152
1153 apmc = jread32(jme, JME_APMC) | JME_APMC_PCIE_SD_EN;
1154 apmc &= ~JME_APMC_EPIEN_CTRL;
1155 if (!no_extplug) {
1156 jwrite32f(jme, JME_APMC, apmc | JME_APMC_EPIEN_CTRL_EN);
1157 wmb();
1158 }
1159 jwrite32f(jme, JME_APMC, apmc);
1160
1161 jwrite32f(jme, JME_TIMER2, 0);
1162 set_bit(JME_FLAG_SHUTDOWN, &jme->flags);
1163 jwrite32(jme, JME_TMCSR,
1164 TMCSR_EN | ((0xFFFFFF - APMC_PHP_SHUTDOWN_DELAY) & TMCSR_CNT));
1165}
1166
1167static void
1168jme_stop_shutdown_timer(struct jme_adapter *jme)
1169{
1170 u32 apmc;
1171
1172 jwrite32f(jme, JME_TMCSR, 0);
1173 jwrite32f(jme, JME_TIMER2, 0);
1174 clear_bit(JME_FLAG_SHUTDOWN, &jme->flags);
1175
1176 apmc = jread32(jme, JME_APMC);
1177 apmc &= ~(JME_APMC_PCIE_SD_EN | JME_APMC_EPIEN_CTRL);
1178 jwrite32f(jme, JME_APMC, apmc | JME_APMC_EPIEN_CTRL_DIS);
1179 wmb();
1180 jwrite32f(jme, JME_APMC, apmc);
1181}
1182
1183static void
1184jme_link_change_tasklet(unsigned long arg)
1185{
1186 struct jme_adapter *jme = (struct jme_adapter *)arg;
1187 struct net_device *netdev = jme->dev;
1188 int rc;
1189
1190 while (!atomic_dec_and_test(&jme->link_changing)) {
1191 atomic_inc(&jme->link_changing);
1192 netif_info(jme, intr, jme->dev, "Get link change lock failed.\n");
1193 while (atomic_read(&jme->link_changing) != 1)
1194 netif_info(jme, intr, jme->dev, "Waiting link change lock.\n");
1195 }
1196
1197 if (jme_check_link(netdev, 1) && jme->old_mtu == netdev->mtu)
1198 goto out;
1199
1200 jme->old_mtu = netdev->mtu;
1201 netif_stop_queue(netdev);
1202 if (jme_pseudo_hotplug_enabled(jme))
1203 jme_stop_shutdown_timer(jme);
1204
1205 jme_stop_pcc_timer(jme);
1206 tasklet_disable(&jme->txclean_task);
1207 tasklet_disable(&jme->rxclean_task);
1208 tasklet_disable(&jme->rxempty_task);
1209
1210 if (netif_carrier_ok(netdev)) {
1211 jme_reset_ghc_speed(jme);
1212 jme_disable_rx_engine(jme);
1213 jme_disable_tx_engine(jme);
1214 jme_reset_mac_processor(jme);
1215 jme_free_rx_resources(jme);
1216 jme_free_tx_resources(jme);
1217
1218 if (test_bit(JME_FLAG_POLL, &jme->flags))
1219 jme_polling_mode(jme);
1220
1221 netif_carrier_off(netdev);
1222 }
1223
1224 jme_check_link(netdev, 0);
1225 if (netif_carrier_ok(netdev)) {
1226 rc = jme_setup_rx_resources(jme);
1227 if (rc) {
1228 jeprintk(jme->pdev, "Allocating resources for RX error"
1229 ", Device STOPPED!\n");
1230 goto out_enable_tasklet;
1231 }
1232
1233 rc = jme_setup_tx_resources(jme);
1234 if (rc) {
1235 jeprintk(jme->pdev, "Allocating resources for TX error"
1236 ", Device STOPPED!\n");
1237 goto err_out_free_rx_resources;
1238 }
1239
1240 jme_enable_rx_engine(jme);
1241 jme_enable_tx_engine(jme);
1242
1243 netif_start_queue(netdev);
1244
1245 if (test_bit(JME_FLAG_POLL, &jme->flags))
1246 jme_interrupt_mode(jme);
1247
1248 jme_start_pcc_timer(jme);
1249 } else if (jme_pseudo_hotplug_enabled(jme)) {
1250 jme_start_shutdown_timer(jme);
1251 }
1252
1253 goto out_enable_tasklet;
1254
1255err_out_free_rx_resources:
1256 jme_free_rx_resources(jme);
1257out_enable_tasklet:
1258 tasklet_enable(&jme->txclean_task);
1259 tasklet_hi_enable(&jme->rxclean_task);
1260 tasklet_hi_enable(&jme->rxempty_task);
1261out:
1262 atomic_inc(&jme->link_changing);
1263}
1264
1265static void
1266jme_rx_clean_tasklet(unsigned long arg)
1267{
1268 struct jme_adapter *jme = (struct jme_adapter *)arg;
1269 struct dynpcc_info *dpi = &(jme->dpi);
1270
1271 jme_process_receive(jme, jme->rx_ring_size);
1272 ++(dpi->intr_cnt);
1273
1274}
1275
1276static int
1277jme_poll(JME_NAPI_HOLDER(holder), JME_NAPI_WEIGHT(budget))
1278{
1279 struct jme_adapter *jme = jme_napi_priv(holder);
1280 int rest;
1281
1282 rest = jme_process_receive(jme, JME_NAPI_WEIGHT_VAL(budget));
1283
1284 while (atomic_read(&jme->rx_empty) > 0) {
1285 atomic_dec(&jme->rx_empty);
1286 ++(NET_STAT(jme).rx_dropped);
1287 jme_restart_rx_engine(jme);
1288 }
1289 atomic_inc(&jme->rx_empty);
1290
1291 if (rest) {
1292 JME_RX_COMPLETE(netdev, holder);
1293 jme_interrupt_mode(jme);
1294 }
1295
1296 JME_NAPI_WEIGHT_SET(budget, rest);
1297 return JME_NAPI_WEIGHT_VAL(budget) - rest;
1298}
1299
1300static void
1301jme_rx_empty_tasklet(unsigned long arg)
1302{
1303 struct jme_adapter *jme = (struct jme_adapter *)arg;
1304
1305 if (unlikely(atomic_read(&jme->link_changing) != 1))
1306 return;
1307
1308 if (unlikely(!netif_carrier_ok(jme->dev)))
1309 return;
1310
1311 netif_info(jme, rx_status, jme->dev, "RX Queue Full!\n");
1312
1313 jme_rx_clean_tasklet(arg);
1314
1315 while (atomic_read(&jme->rx_empty) > 0) {
1316 atomic_dec(&jme->rx_empty);
1317 ++(NET_STAT(jme).rx_dropped);
1318 jme_restart_rx_engine(jme);
1319 }
1320 atomic_inc(&jme->rx_empty);
1321}
1322
1323static void
1324jme_wake_queue_if_stopped(struct jme_adapter *jme)
1325{
1326 struct jme_ring *txring = &(jme->txring[0]);
1327
1328 smp_wmb();
1329 if (unlikely(netif_queue_stopped(jme->dev) &&
1330 atomic_read(&txring->nr_free) >= (jme->tx_wake_threshold))) {
1331 netif_info(jme, tx_done, jme->dev, "TX Queue Waked.\n");
1332 netif_wake_queue(jme->dev);
1333 }
1334
1335}
1336
1337static void
1338jme_tx_clean_tasklet(unsigned long arg)
1339{
1340 struct jme_adapter *jme = (struct jme_adapter *)arg;
1341 struct jme_ring *txring = &(jme->txring[0]);
1342 struct txdesc *txdesc = txring->desc;
1343 struct jme_buffer_info *txbi = txring->bufinf, *ctxbi, *ttxbi;
1344 int i, j, cnt = 0, max, err, mask;
1345
1346 tx_dbg(jme, "Into txclean.\n");
1347
1348 if (unlikely(!atomic_dec_and_test(&jme->tx_cleaning)))
1349 goto out;
1350
1351 if (unlikely(atomic_read(&jme->link_changing) != 1))
1352 goto out;
1353
1354 if (unlikely(!netif_carrier_ok(jme->dev)))
1355 goto out;
1356
1357 max = jme->tx_ring_size - atomic_read(&txring->nr_free);
1358 mask = jme->tx_ring_mask;
1359
1360 for (i = atomic_read(&txring->next_to_clean) ; cnt < max ; ) {
1361
1362 ctxbi = txbi + i;
1363
1364 if (likely(ctxbi->skb &&
1365 !(txdesc[i].descwb.flags & TXWBFLAG_OWN))) {
1366
1367 tx_dbg(jme, "txclean: %d+%d@%lu\n",
1368 i, ctxbi->nr_desc, jiffies);
1369
1370 err = txdesc[i].descwb.flags & TXWBFLAG_ALLERR;
1371
1372 for (j = 1 ; j < ctxbi->nr_desc ; ++j) {
1373 ttxbi = txbi + ((i + j) & (mask));
1374 txdesc[(i + j) & (mask)].dw[0] = 0;
1375
1376 pci_unmap_page(jme->pdev,
1377 ttxbi->mapping,
1378 ttxbi->len,
1379 PCI_DMA_TODEVICE);
1380
1381 ttxbi->mapping = 0;
1382 ttxbi->len = 0;
1383 }
1384
1385 dev_kfree_skb(ctxbi->skb);
1386
1387 cnt += ctxbi->nr_desc;
1388
1389 if (unlikely(err)) {
1390 ++(NET_STAT(jme).tx_carrier_errors);
1391 } else {
1392 ++(NET_STAT(jme).tx_packets);
1393 NET_STAT(jme).tx_bytes += ctxbi->len;
1394 }
1395
1396 ctxbi->skb = NULL;
1397 ctxbi->len = 0;
1398 ctxbi->start_xmit = 0;
1399
1400 } else {
1401 break;
1402 }
1403
1404 i = (i + ctxbi->nr_desc) & mask;
1405
1406 ctxbi->nr_desc = 0;
1407 }
1408
1409 tx_dbg(jme, "txclean: done %d@%lu.\n", i, jiffies);
1410 atomic_set(&txring->next_to_clean, i);
1411 atomic_add(cnt, &txring->nr_free);
1412
1413 jme_wake_queue_if_stopped(jme);
1414
1415out:
1416 atomic_inc(&jme->tx_cleaning);
1417}
1418
1419static void
1420jme_intr_msi(struct jme_adapter *jme, u32 intrstat)
1421{
1422 /*
1423 * Disable interrupt
1424 */
1425 jwrite32f(jme, JME_IENC, INTR_ENABLE);
1426
1427 if (intrstat & (INTR_LINKCH | INTR_SWINTR)) {
1428 /*
1429 * Link change event is critical
1430 * all other events are ignored
1431 */
1432 jwrite32(jme, JME_IEVE, intrstat);
1433 tasklet_schedule(&jme->linkch_task);
1434 goto out_reenable;
1435 }
1436
1437 if (intrstat & INTR_TMINTR) {
1438 jwrite32(jme, JME_IEVE, INTR_TMINTR);
1439 tasklet_schedule(&jme->pcc_task);
1440 }
1441
1442 if (intrstat & (INTR_PCCTXTO | INTR_PCCTX)) {
1443 jwrite32(jme, JME_IEVE, INTR_PCCTXTO | INTR_PCCTX | INTR_TX0);
1444 tasklet_schedule(&jme->txclean_task);
1445 }
1446
1447 if ((intrstat & (INTR_PCCRX0TO | INTR_PCCRX0 | INTR_RX0EMP))) {
1448 jwrite32(jme, JME_IEVE, (intrstat & (INTR_PCCRX0TO |
1449 INTR_PCCRX0 |
1450 INTR_RX0EMP)) |
1451 INTR_RX0);
1452 }
1453
1454 if (test_bit(JME_FLAG_POLL, &jme->flags)) {
1455 if (intrstat & INTR_RX0EMP)
1456 atomic_inc(&jme->rx_empty);
1457
1458 if ((intrstat & (INTR_PCCRX0TO | INTR_PCCRX0 | INTR_RX0EMP))) {
1459 if (likely(JME_RX_SCHEDULE_PREP(jme))) {
1460 jme_polling_mode(jme);
1461 JME_RX_SCHEDULE(jme);
1462 }
1463 }
1464 } else {
1465 if (intrstat & INTR_RX0EMP) {
1466 atomic_inc(&jme->rx_empty);
1467 tasklet_hi_schedule(&jme->rxempty_task);
1468 } else if (intrstat & (INTR_PCCRX0TO | INTR_PCCRX0)) {
1469 tasklet_hi_schedule(&jme->rxclean_task);
1470 }
1471 }
1472
1473out_reenable:
1474 /*
1475 * Re-enable interrupt
1476 */
1477 jwrite32f(jme, JME_IENS, INTR_ENABLE);
1478}
1479
1480static irqreturn_t
1481jme_intr(int irq, void *dev_id)
1482{
1483 struct net_device *netdev = dev_id;
1484 struct jme_adapter *jme = netdev_priv(netdev);
1485 u32 intrstat;
1486
1487 intrstat = jread32(jme, JME_IEVE);
1488
1489 /*
1490 * Check if it's really an interrupt for us
1491 */
1492 if (unlikely((intrstat & INTR_ENABLE) == 0))
1493 return IRQ_NONE;
1494
1495 /*
1496 * Check if the device still exist
1497 */
1498 if (unlikely(intrstat == ~((typeof(intrstat))0)))
1499 return IRQ_NONE;
1500
1501 jme_intr_msi(jme, intrstat);
1502
1503 return IRQ_HANDLED;
1504}
1505
1506static irqreturn_t
1507jme_msi(int irq, void *dev_id)
1508{
1509 struct net_device *netdev = dev_id;
1510 struct jme_adapter *jme = netdev_priv(netdev);
1511 u32 intrstat;
1512
1513 intrstat = jread32(jme, JME_IEVE);
1514
1515 jme_intr_msi(jme, intrstat);
1516
1517 return IRQ_HANDLED;
1518}
1519
1520static void
1521jme_reset_link(struct jme_adapter *jme)
1522{
1523 jwrite32(jme, JME_TMCSR, TMCSR_SWIT);
1524}
1525
1526static void
1527jme_restart_an(struct jme_adapter *jme)
1528{
1529 u32 bmcr;
1530
1531 spin_lock_bh(&jme->phy_lock);
1532 bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1533 bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
1534 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr);
1535 spin_unlock_bh(&jme->phy_lock);
1536}
1537
1538static int
1539jme_request_irq(struct jme_adapter *jme)
1540{
1541 int rc;
1542 struct net_device *netdev = jme->dev;
1543 irq_handler_t handler = jme_intr;
1544 int irq_flags = IRQF_SHARED;
1545
1546 if (!pci_enable_msi(jme->pdev)) {
1547 set_bit(JME_FLAG_MSI, &jme->flags);
1548 handler = jme_msi;
1549 irq_flags = 0;
1550 }
1551
1552 rc = request_irq(jme->pdev->irq, handler, irq_flags, netdev->name,
1553 netdev);
1554 if (rc) {
1555 jeprintk(jme->pdev,
1556 "Unable to request %s interrupt (return: %d)\n",
1557 test_bit(JME_FLAG_MSI, &jme->flags) ? "MSI" : "INTx",
1558 rc);
1559
1560 if (test_bit(JME_FLAG_MSI, &jme->flags)) {
1561 pci_disable_msi(jme->pdev);
1562 clear_bit(JME_FLAG_MSI, &jme->flags);
1563 }
1564 } else {
1565 netdev->irq = jme->pdev->irq;
1566 }
1567
1568 return rc;
1569}
1570
1571static void
1572jme_free_irq(struct jme_adapter *jme)
1573{
1574 free_irq(jme->pdev->irq, jme->dev);
1575 if (test_bit(JME_FLAG_MSI, &jme->flags)) {
1576 pci_disable_msi(jme->pdev);
1577 clear_bit(JME_FLAG_MSI, &jme->flags);
1578 jme->dev->irq = jme->pdev->irq;
1579 }
1580}
1581
1582static int
1583jme_open(struct net_device *netdev)
1584{
1585 struct jme_adapter *jme = netdev_priv(netdev);
1586 int rc;
1587
1588 jme_clear_pm(jme);
1589 JME_NAPI_ENABLE(jme);
1590
1591 tasklet_enable(&jme->linkch_task);
1592 tasklet_enable(&jme->txclean_task);
1593 tasklet_hi_enable(&jme->rxclean_task);
1594 tasklet_hi_enable(&jme->rxempty_task);
1595
1596 rc = jme_request_irq(jme);
1597 if (rc)
1598 goto err_out;
1599
1600 jme_start_irq(jme);
1601
1602 if (test_bit(JME_FLAG_SSET, &jme->flags))
1603 jme_set_settings(netdev, &jme->old_ecmd);
1604 else
1605 jme_reset_phy_processor(jme);
1606
1607 jme_reset_link(jme);
1608
1609 return 0;
1610
1611err_out:
1612 netif_stop_queue(netdev);
1613 netif_carrier_off(netdev);
1614 return rc;
1615}
1616
1617#ifdef CONFIG_PM
1618static void
1619jme_set_100m_half(struct jme_adapter *jme)
1620{
1621 u32 bmcr, tmp;
1622
1623 bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1624 tmp = bmcr & ~(BMCR_ANENABLE | BMCR_SPEED100 |
1625 BMCR_SPEED1000 | BMCR_FULLDPLX);
1626 tmp |= BMCR_SPEED100;
1627
1628 if (bmcr != tmp)
1629 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, tmp);
1630
1631 if (jme->fpgaver)
1632 jwrite32(jme, JME_GHC, GHC_SPEED_100M | GHC_LINK_POLL);
1633 else
1634 jwrite32(jme, JME_GHC, GHC_SPEED_100M);
1635}
1636
1637#define JME_WAIT_LINK_TIME 2000 /* 2000ms */
1638static void
1639jme_wait_link(struct jme_adapter *jme)
1640{
1641 u32 phylink, to = JME_WAIT_LINK_TIME;
1642
1643 mdelay(1000);
1644 phylink = jme_linkstat_from_phy(jme);
1645 while (!(phylink & PHY_LINK_UP) && (to -= 10) > 0) {
1646 mdelay(10);
1647 phylink = jme_linkstat_from_phy(jme);
1648 }
1649}
1650#endif
1651
1652static inline void
1653jme_phy_off(struct jme_adapter *jme)
1654{
1655 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, BMCR_PDOWN);
1656}
1657
1658static int
1659jme_close(struct net_device *netdev)
1660{
1661 struct jme_adapter *jme = netdev_priv(netdev);
1662
1663 netif_stop_queue(netdev);
1664 netif_carrier_off(netdev);
1665
1666 jme_stop_irq(jme);
1667 jme_free_irq(jme);
1668
1669 JME_NAPI_DISABLE(jme);
1670
1671 tasklet_disable(&jme->linkch_task);
1672 tasklet_disable(&jme->txclean_task);
1673 tasklet_disable(&jme->rxclean_task);
1674 tasklet_disable(&jme->rxempty_task);
1675
1676 jme_reset_ghc_speed(jme);
1677 jme_disable_rx_engine(jme);
1678 jme_disable_tx_engine(jme);
1679 jme_reset_mac_processor(jme);
1680 jme_free_rx_resources(jme);
1681 jme_free_tx_resources(jme);
1682 jme->phylink = 0;
1683 jme_phy_off(jme);
1684
1685 return 0;
1686}
1687
1688static int
1689jme_alloc_txdesc(struct jme_adapter *jme,
1690 struct sk_buff *skb)
1691{
1692 struct jme_ring *txring = &(jme->txring[0]);
1693 int idx, nr_alloc, mask = jme->tx_ring_mask;
1694
1695 idx = txring->next_to_use;
1696 nr_alloc = skb_shinfo(skb)->nr_frags + 2;
1697
1698 if (unlikely(atomic_read(&txring->nr_free) < nr_alloc))
1699 return -1;
1700
1701 atomic_sub(nr_alloc, &txring->nr_free);
1702
1703 txring->next_to_use = (txring->next_to_use + nr_alloc) & mask;
1704
1705 return idx;
1706}
1707
1708static void
1709jme_fill_tx_map(struct pci_dev *pdev,
1710 struct txdesc *txdesc,
1711 struct jme_buffer_info *txbi,
1712 struct page *page,
1713 u32 page_offset,
1714 u32 len,
1715 u8 hidma)
1716{
1717 dma_addr_t dmaaddr;
1718
1719 dmaaddr = pci_map_page(pdev,
1720 page,
1721 page_offset,
1722 len,
1723 PCI_DMA_TODEVICE);
1724
1725 pci_dma_sync_single_for_device(pdev,
1726 dmaaddr,
1727 len,
1728 PCI_DMA_TODEVICE);
1729
1730 txdesc->dw[0] = 0;
1731 txdesc->dw[1] = 0;
1732 txdesc->desc2.flags = TXFLAG_OWN;
1733 txdesc->desc2.flags |= (hidma) ? TXFLAG_64BIT : 0;
1734 txdesc->desc2.datalen = cpu_to_le16(len);
1735 txdesc->desc2.bufaddrh = cpu_to_le32((__u64)dmaaddr >> 32);
1736 txdesc->desc2.bufaddrl = cpu_to_le32(
1737 (__u64)dmaaddr & 0xFFFFFFFFUL);
1738
1739 txbi->mapping = dmaaddr;
1740 txbi->len = len;
1741}
1742
1743static void
1744jme_map_tx_skb(struct jme_adapter *jme, struct sk_buff *skb, int idx)
1745{
1746 struct jme_ring *txring = &(jme->txring[0]);
1747 struct txdesc *txdesc = txring->desc, *ctxdesc;
1748 struct jme_buffer_info *txbi = txring->bufinf, *ctxbi;
1749 u8 hidma = jme->dev->features & NETIF_F_HIGHDMA;
1750 int i, nr_frags = skb_shinfo(skb)->nr_frags;
1751 int mask = jme->tx_ring_mask;
1752 struct skb_frag_struct *frag;
1753 u32 len;
1754
1755 for (i = 0 ; i < nr_frags ; ++i) {
1756 frag = &skb_shinfo(skb)->frags[i];
1757 ctxdesc = txdesc + ((idx + i + 2) & (mask));
1758 ctxbi = txbi + ((idx + i + 2) & (mask));
1759
1760 jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi, frag->page,
1761 frag->page_offset, frag->size, hidma);
1762 }
1763
1764 len = skb_is_nonlinear(skb) ? skb_headlen(skb) : skb->len;
1765 ctxdesc = txdesc + ((idx + 1) & (mask));
1766 ctxbi = txbi + ((idx + 1) & (mask));
1767 jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi, virt_to_page(skb->data),
1768 offset_in_page(skb->data), len, hidma);
1769
1770}
1771
1772static int
1773jme_expand_header(struct jme_adapter *jme, struct sk_buff *skb)
1774{
1775 if (unlikely(skb_shinfo(skb)->gso_size &&
1776 skb_header_cloned(skb) &&
1777 pskb_expand_head(skb, 0, 0, GFP_ATOMIC))) {
1778 dev_kfree_skb(skb);
1779 return -1;
1780 }
1781
1782 return 0;
1783}
1784
1785static int
1786jme_tx_tso(struct sk_buff *skb, __le16 *mss, u8 *flags)
1787{
1788 *mss = cpu_to_le16(skb_shinfo(skb)->gso_size << TXDESC_MSS_SHIFT);
1789 if (*mss) {
1790 *flags |= TXFLAG_LSEN;
1791
1792 if (skb->protocol == htons(ETH_P_IP)) {
1793 struct iphdr *iph = ip_hdr(skb);
1794
1795 iph->check = 0;
1796 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
1797 iph->daddr, 0,
1798 IPPROTO_TCP,
1799 0);
1800 } else {
1801 struct ipv6hdr *ip6h = ipv6_hdr(skb);
1802
1803 tcp_hdr(skb)->check = ~csum_ipv6_magic(&ip6h->saddr,
1804 &ip6h->daddr, 0,
1805 IPPROTO_TCP,
1806 0);
1807 }
1808
1809 return 0;
1810 }
1811
1812 return 1;
1813}
1814
1815static void
1816jme_tx_csum(struct jme_adapter *jme, struct sk_buff *skb, u8 *flags)
1817{
1818 if (skb->ip_summed == CHECKSUM_PARTIAL) {
1819 u8 ip_proto;
1820
1821 switch (skb->protocol) {
1822 case htons(ETH_P_IP):
1823 ip_proto = ip_hdr(skb)->protocol;
1824 break;
1825 case htons(ETH_P_IPV6):
1826 ip_proto = ipv6_hdr(skb)->nexthdr;
1827 break;
1828 default:
1829 ip_proto = 0;
1830 break;
1831 }
1832
1833 switch (ip_proto) {
1834 case IPPROTO_TCP:
1835 *flags |= TXFLAG_TCPCS;
1836 break;
1837 case IPPROTO_UDP:
1838 *flags |= TXFLAG_UDPCS;
1839 break;
1840 default:
1841 netif_err(jme, tx_err, jme->dev, "Error upper layer protocol.\n");
1842 break;
1843 }
1844 }
1845}
1846
1847static inline void
1848jme_tx_vlan(struct sk_buff *skb, __le16 *vlan, u8 *flags)
1849{
1850 if (vlan_tx_tag_present(skb)) {
1851 *flags |= TXFLAG_TAGON;
1852 *vlan = cpu_to_le16(vlan_tx_tag_get(skb));
1853 }
1854}
1855
1856static int
1857jme_fill_tx_desc(struct jme_adapter *jme, struct sk_buff *skb, int idx)
1858{
1859 struct jme_ring *txring = &(jme->txring[0]);
1860 struct txdesc *txdesc;
1861 struct jme_buffer_info *txbi;
1862 u8 flags;
1863
1864 txdesc = (struct txdesc *)txring->desc + idx;
1865 txbi = txring->bufinf + idx;
1866
1867 txdesc->dw[0] = 0;
1868 txdesc->dw[1] = 0;
1869 txdesc->dw[2] = 0;
1870 txdesc->dw[3] = 0;
1871 txdesc->desc1.pktsize = cpu_to_le16(skb->len);
1872 /*
1873 * Set OWN bit at final.
1874 * When kernel transmit faster than NIC.
1875 * And NIC trying to send this descriptor before we tell
1876 * it to start sending this TX queue.
1877 * Other fields are already filled correctly.
1878 */
1879 wmb();
1880 flags = TXFLAG_OWN | TXFLAG_INT;
1881 /*
1882 * Set checksum flags while not tso
1883 */
1884 if (jme_tx_tso(skb, &txdesc->desc1.mss, &flags))
1885 jme_tx_csum(jme, skb, &flags);
1886 jme_tx_vlan(skb, &txdesc->desc1.vlan, &flags);
1887 jme_map_tx_skb(jme, skb, idx);
1888 txdesc->desc1.flags = flags;
1889 /*
1890 * Set tx buffer info after telling NIC to send
1891 * For better tx_clean timing
1892 */
1893 wmb();
1894 txbi->nr_desc = skb_shinfo(skb)->nr_frags + 2;
1895 txbi->skb = skb;
1896 txbi->len = skb->len;
1897 txbi->start_xmit = jiffies;
1898 if (!txbi->start_xmit)
1899 txbi->start_xmit = (0UL-1);
1900
1901 return 0;
1902}
1903
1904static void
1905jme_stop_queue_if_full(struct jme_adapter *jme)
1906{
1907 struct jme_ring *txring = &(jme->txring[0]);
1908 struct jme_buffer_info *txbi = txring->bufinf;
1909 int idx = atomic_read(&txring->next_to_clean);
1910
1911 txbi += idx;
1912
1913 smp_wmb();
1914 if (unlikely(atomic_read(&txring->nr_free) < (MAX_SKB_FRAGS+2))) {
1915 netif_stop_queue(jme->dev);
1916 netif_info(jme, tx_queued, jme->dev, "TX Queue Paused.\n");
1917 smp_wmb();
1918 if (atomic_read(&txring->nr_free)
1919 >= (jme->tx_wake_threshold)) {
1920 netif_wake_queue(jme->dev);
1921 netif_info(jme, tx_queued, jme->dev, "TX Queue Fast Waked.\n");
1922 }
1923 }
1924
1925 if (unlikely(txbi->start_xmit &&
1926 (jiffies - txbi->start_xmit) >= TX_TIMEOUT &&
1927 txbi->skb)) {
1928 netif_stop_queue(jme->dev);
1929 netif_info(jme, tx_queued, jme->dev, "TX Queue Stopped %d@%lu.\n", idx, jiffies);
1930 }
1931}
1932
1933/*
1934 * This function is already protected by netif_tx_lock()
1935 */
1936
1937static netdev_tx_t
1938jme_start_xmit(struct sk_buff *skb, struct net_device *netdev)
1939{
1940 struct jme_adapter *jme = netdev_priv(netdev);
1941 int idx;
1942
1943 if (unlikely(jme_expand_header(jme, skb))) {
1944 ++(NET_STAT(jme).tx_dropped);
1945 return NETDEV_TX_OK;
1946 }
1947
1948 idx = jme_alloc_txdesc(jme, skb);
1949
1950 if (unlikely(idx < 0)) {
1951 netif_stop_queue(netdev);
1952 netif_err(jme, tx_err, jme->dev, "BUG! Tx ring full when queue awake!\n");
1953
1954 return NETDEV_TX_BUSY;
1955 }
1956
1957 jme_fill_tx_desc(jme, skb, idx);
1958
1959 jwrite32(jme, JME_TXCS, jme->reg_txcs |
1960 TXCS_SELECT_QUEUE0 |
1961 TXCS_QUEUE0S |
1962 TXCS_ENABLE);
1963
1964 tx_dbg(jme, "xmit: %d+%d@%lu\n", idx,
1965 skb_shinfo(skb)->nr_frags + 2,
1966 jiffies);
1967 jme_stop_queue_if_full(jme);
1968
1969 return NETDEV_TX_OK;
1970}
1971
1972static int
1973jme_set_macaddr(struct net_device *netdev, void *p)
1974{
1975 struct jme_adapter *jme = netdev_priv(netdev);
1976 struct sockaddr *addr = p;
1977 u32 val;
1978
1979 if (netif_running(netdev))
1980 return -EBUSY;
1981
1982 spin_lock_bh(&jme->macaddr_lock);
1983 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
1984
1985 val = (addr->sa_data[3] & 0xff) << 24 |
1986 (addr->sa_data[2] & 0xff) << 16 |
1987 (addr->sa_data[1] & 0xff) << 8 |
1988 (addr->sa_data[0] & 0xff);
1989 jwrite32(jme, JME_RXUMA_LO, val);
1990 val = (addr->sa_data[5] & 0xff) << 8 |
1991 (addr->sa_data[4] & 0xff);
1992 jwrite32(jme, JME_RXUMA_HI, val);
1993 spin_unlock_bh(&jme->macaddr_lock);
1994
1995 return 0;
1996}
1997
1998static void
1999jme_set_multi(struct net_device *netdev)
2000{
2001 struct jme_adapter *jme = netdev_priv(netdev);
2002 u32 mc_hash[2] = {};
2003
2004 spin_lock_bh(&jme->rxmcs_lock);
2005
2006 jme->reg_rxmcs |= RXMCS_BRDFRAME | RXMCS_UNIFRAME;
2007
2008 if (netdev->flags & IFF_PROMISC) {
2009 jme->reg_rxmcs |= RXMCS_ALLFRAME;
2010 } else if (netdev->flags & IFF_ALLMULTI) {
2011 jme->reg_rxmcs |= RXMCS_ALLMULFRAME;
2012 } else if (netdev->flags & IFF_MULTICAST) {
2013 struct netdev_hw_addr *ha;
2014 int bit_nr;
2015
2016 jme->reg_rxmcs |= RXMCS_MULFRAME | RXMCS_MULFILTERED;
2017 netdev_for_each_mc_addr(ha, netdev) {
2018 bit_nr = ether_crc(ETH_ALEN, ha->addr) & 0x3F;
2019 mc_hash[bit_nr >> 5] |= 1 << (bit_nr & 0x1F);
2020 }
2021
2022 jwrite32(jme, JME_RXMCHT_LO, mc_hash[0]);
2023 jwrite32(jme, JME_RXMCHT_HI, mc_hash[1]);
2024 }
2025
2026 wmb();
2027 jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2028
2029 spin_unlock_bh(&jme->rxmcs_lock);
2030}
2031
2032static int
2033jme_change_mtu(struct net_device *netdev, int new_mtu)
2034{
2035 struct jme_adapter *jme = netdev_priv(netdev);
2036
2037 if (new_mtu == jme->old_mtu)
2038 return 0;
2039
2040 if (((new_mtu + ETH_HLEN) > MAX_ETHERNET_JUMBO_PACKET_SIZE) ||
2041 ((new_mtu) < IPV6_MIN_MTU))
2042 return -EINVAL;
2043
2044 if (new_mtu > 4000) {
2045 jme->reg_rxcs &= ~RXCS_FIFOTHNP;
2046 jme->reg_rxcs |= RXCS_FIFOTHNP_64QW;
2047 jme_restart_rx_engine(jme);
2048 } else {
2049 jme->reg_rxcs &= ~RXCS_FIFOTHNP;
2050 jme->reg_rxcs |= RXCS_FIFOTHNP_128QW;
2051 jme_restart_rx_engine(jme);
2052 }
2053
2054 if (new_mtu > 1900) {
2055 netdev->features &= ~(NETIF_F_HW_CSUM |
2056 NETIF_F_TSO |
2057 NETIF_F_TSO6);
2058 } else {
2059 if (test_bit(JME_FLAG_TXCSUM, &jme->flags))
2060 netdev->features |= NETIF_F_HW_CSUM;
2061 if (test_bit(JME_FLAG_TSO, &jme->flags))
2062 netdev->features |= NETIF_F_TSO | NETIF_F_TSO6;
2063 }
2064
2065 netdev->mtu = new_mtu;
2066 jme_reset_link(jme);
2067
2068 return 0;
2069}
2070
2071static void
2072jme_tx_timeout(struct net_device *netdev)
2073{
2074 struct jme_adapter *jme = netdev_priv(netdev);
2075
2076 jme->phylink = 0;
2077 jme_reset_phy_processor(jme);
2078 if (test_bit(JME_FLAG_SSET, &jme->flags))
2079 jme_set_settings(netdev, &jme->old_ecmd);
2080
2081 /*
2082 * Force to Reset the link again
2083 */
2084 jme_reset_link(jme);
2085}
2086
2087static inline void jme_pause_rx(struct jme_adapter *jme)
2088{
2089 atomic_dec(&jme->link_changing);
2090
2091 jme_set_rx_pcc(jme, PCC_OFF);
2092 if (test_bit(JME_FLAG_POLL, &jme->flags)) {
2093 JME_NAPI_DISABLE(jme);
2094 } else {
2095 tasklet_disable(&jme->rxclean_task);
2096 tasklet_disable(&jme->rxempty_task);
2097 }
2098}
2099
2100static inline void jme_resume_rx(struct jme_adapter *jme)
2101{
2102 struct dynpcc_info *dpi = &(jme->dpi);
2103
2104 if (test_bit(JME_FLAG_POLL, &jme->flags)) {
2105 JME_NAPI_ENABLE(jme);
2106 } else {
2107 tasklet_hi_enable(&jme->rxclean_task);
2108 tasklet_hi_enable(&jme->rxempty_task);
2109 }
2110 dpi->cur = PCC_P1;
2111 dpi->attempt = PCC_P1;
2112 dpi->cnt = 0;
2113 jme_set_rx_pcc(jme, PCC_P1);
2114
2115 atomic_inc(&jme->link_changing);
2116}
2117
2118static void
2119jme_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp)
2120{
2121 struct jme_adapter *jme = netdev_priv(netdev);
2122
2123 jme_pause_rx(jme);
2124 jme->vlgrp = grp;
2125 jme_resume_rx(jme);
2126}
2127
2128static void
2129jme_get_drvinfo(struct net_device *netdev,
2130 struct ethtool_drvinfo *info)
2131{
2132 struct jme_adapter *jme = netdev_priv(netdev);
2133
2134 strcpy(info->driver, DRV_NAME);
2135 strcpy(info->version, DRV_VERSION);
2136 strcpy(info->bus_info, pci_name(jme->pdev));
2137}
2138
2139static int
2140jme_get_regs_len(struct net_device *netdev)
2141{
2142 return JME_REG_LEN;
2143}
2144
2145static void
2146mmapio_memcpy(struct jme_adapter *jme, u32 *p, u32 reg, int len)
2147{
2148 int i;
2149
2150 for (i = 0 ; i < len ; i += 4)
2151 p[i >> 2] = jread32(jme, reg + i);
2152}
2153
2154static void
2155mdio_memcpy(struct jme_adapter *jme, u32 *p, int reg_nr)
2156{
2157 int i;
2158 u16 *p16 = (u16 *)p;
2159
2160 for (i = 0 ; i < reg_nr ; ++i)
2161 p16[i] = jme_mdio_read(jme->dev, jme->mii_if.phy_id, i);
2162}
2163
2164static void
2165jme_get_regs(struct net_device *netdev, struct ethtool_regs *regs, void *p)
2166{
2167 struct jme_adapter *jme = netdev_priv(netdev);
2168 u32 *p32 = (u32 *)p;
2169
2170 memset(p, 0xFF, JME_REG_LEN);
2171
2172 regs->version = 1;
2173 mmapio_memcpy(jme, p32, JME_MAC, JME_MAC_LEN);
2174
2175 p32 += 0x100 >> 2;
2176 mmapio_memcpy(jme, p32, JME_PHY, JME_PHY_LEN);
2177
2178 p32 += 0x100 >> 2;
2179 mmapio_memcpy(jme, p32, JME_MISC, JME_MISC_LEN);
2180
2181 p32 += 0x100 >> 2;
2182 mmapio_memcpy(jme, p32, JME_RSS, JME_RSS_LEN);
2183
2184 p32 += 0x100 >> 2;
2185 mdio_memcpy(jme, p32, JME_PHY_REG_NR);
2186}
2187
2188static int
2189jme_get_coalesce(struct net_device *netdev, struct ethtool_coalesce *ecmd)
2190{
2191 struct jme_adapter *jme = netdev_priv(netdev);
2192
2193 ecmd->tx_coalesce_usecs = PCC_TX_TO;
2194 ecmd->tx_max_coalesced_frames = PCC_TX_CNT;
2195
2196 if (test_bit(JME_FLAG_POLL, &jme->flags)) {
2197 ecmd->use_adaptive_rx_coalesce = false;
2198 ecmd->rx_coalesce_usecs = 0;
2199 ecmd->rx_max_coalesced_frames = 0;
2200 return 0;
2201 }
2202
2203 ecmd->use_adaptive_rx_coalesce = true;
2204
2205 switch (jme->dpi.cur) {
2206 case PCC_P1:
2207 ecmd->rx_coalesce_usecs = PCC_P1_TO;
2208 ecmd->rx_max_coalesced_frames = PCC_P1_CNT;
2209 break;
2210 case PCC_P2:
2211 ecmd->rx_coalesce_usecs = PCC_P2_TO;
2212 ecmd->rx_max_coalesced_frames = PCC_P2_CNT;
2213 break;
2214 case PCC_P3:
2215 ecmd->rx_coalesce_usecs = PCC_P3_TO;
2216 ecmd->rx_max_coalesced_frames = PCC_P3_CNT;
2217 break;
2218 default:
2219 break;
2220 }
2221
2222 return 0;
2223}
2224
2225static int
2226jme_set_coalesce(struct net_device *netdev, struct ethtool_coalesce *ecmd)
2227{
2228 struct jme_adapter *jme = netdev_priv(netdev);
2229 struct dynpcc_info *dpi = &(jme->dpi);
2230
2231 if (netif_running(netdev))
2232 return -EBUSY;
2233
2234 if (ecmd->use_adaptive_rx_coalesce &&
2235 test_bit(JME_FLAG_POLL, &jme->flags)) {
2236 clear_bit(JME_FLAG_POLL, &jme->flags);
2237 jme->jme_rx = netif_rx;
2238 jme->jme_vlan_rx = vlan_hwaccel_rx;
2239 dpi->cur = PCC_P1;
2240 dpi->attempt = PCC_P1;
2241 dpi->cnt = 0;
2242 jme_set_rx_pcc(jme, PCC_P1);
2243 jme_interrupt_mode(jme);
2244 } else if (!(ecmd->use_adaptive_rx_coalesce) &&
2245 !(test_bit(JME_FLAG_POLL, &jme->flags))) {
2246 set_bit(JME_FLAG_POLL, &jme->flags);
2247 jme->jme_rx = netif_receive_skb;
2248 jme->jme_vlan_rx = vlan_hwaccel_receive_skb;
2249 jme_interrupt_mode(jme);
2250 }
2251
2252 return 0;
2253}
2254
2255static void
2256jme_get_pauseparam(struct net_device *netdev,
2257 struct ethtool_pauseparam *ecmd)
2258{
2259 struct jme_adapter *jme = netdev_priv(netdev);
2260 u32 val;
2261
2262 ecmd->tx_pause = (jme->reg_txpfc & TXPFC_PF_EN) != 0;
2263 ecmd->rx_pause = (jme->reg_rxmcs & RXMCS_FLOWCTRL) != 0;
2264
2265 spin_lock_bh(&jme->phy_lock);
2266 val = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_ADVERTISE);
2267 spin_unlock_bh(&jme->phy_lock);
2268
2269 ecmd->autoneg =
2270 (val & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) != 0;
2271}
2272
2273static int
2274jme_set_pauseparam(struct net_device *netdev,
2275 struct ethtool_pauseparam *ecmd)
2276{
2277 struct jme_adapter *jme = netdev_priv(netdev);
2278 u32 val;
2279
2280 if (((jme->reg_txpfc & TXPFC_PF_EN) != 0) ^
2281 (ecmd->tx_pause != 0)) {
2282
2283 if (ecmd->tx_pause)
2284 jme->reg_txpfc |= TXPFC_PF_EN;
2285 else
2286 jme->reg_txpfc &= ~TXPFC_PF_EN;
2287
2288 jwrite32(jme, JME_TXPFC, jme->reg_txpfc);
2289 }
2290
2291 spin_lock_bh(&jme->rxmcs_lock);
2292 if (((jme->reg_rxmcs & RXMCS_FLOWCTRL) != 0) ^
2293 (ecmd->rx_pause != 0)) {
2294
2295 if (ecmd->rx_pause)
2296 jme->reg_rxmcs |= RXMCS_FLOWCTRL;
2297 else
2298 jme->reg_rxmcs &= ~RXMCS_FLOWCTRL;
2299
2300 jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2301 }
2302 spin_unlock_bh(&jme->rxmcs_lock);
2303
2304 spin_lock_bh(&jme->phy_lock);
2305 val = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_ADVERTISE);
2306 if (((val & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) != 0) ^
2307 (ecmd->autoneg != 0)) {
2308
2309 if (ecmd->autoneg)
2310 val |= (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
2311 else
2312 val &= ~(ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
2313
2314 jme_mdio_write(jme->dev, jme->mii_if.phy_id,
2315 MII_ADVERTISE, val);
2316 }
2317 spin_unlock_bh(&jme->phy_lock);
2318
2319 return 0;
2320}
2321
2322static void
2323jme_get_wol(struct net_device *netdev,
2324 struct ethtool_wolinfo *wol)
2325{
2326 struct jme_adapter *jme = netdev_priv(netdev);
2327
2328 wol->supported = WAKE_MAGIC | WAKE_PHY;
2329
2330 wol->wolopts = 0;
2331
2332 if (jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN))
2333 wol->wolopts |= WAKE_PHY;
2334
2335 if (jme->reg_pmcs & PMCS_MFEN)
2336 wol->wolopts |= WAKE_MAGIC;
2337
2338}
2339
2340static int
2341jme_set_wol(struct net_device *netdev,
2342 struct ethtool_wolinfo *wol)
2343{
2344 struct jme_adapter *jme = netdev_priv(netdev);
2345
2346 if (wol->wolopts & (WAKE_MAGICSECURE |
2347 WAKE_UCAST |
2348 WAKE_MCAST |
2349 WAKE_BCAST |
2350 WAKE_ARP))
2351 return -EOPNOTSUPP;
2352
2353 jme->reg_pmcs = 0;
2354
2355 if (wol->wolopts & WAKE_PHY)
2356 jme->reg_pmcs |= PMCS_LFEN | PMCS_LREN;
2357
2358 if (wol->wolopts & WAKE_MAGIC)
2359 jme->reg_pmcs |= PMCS_MFEN;
2360
2361 jwrite32(jme, JME_PMCS, jme->reg_pmcs);
2362
2363 return 0;
2364}
2365
2366static int
2367jme_get_settings(struct net_device *netdev,
2368 struct ethtool_cmd *ecmd)
2369{
2370 struct jme_adapter *jme = netdev_priv(netdev);
2371 int rc;
2372
2373 spin_lock_bh(&jme->phy_lock);
2374 rc = mii_ethtool_gset(&(jme->mii_if), ecmd);
2375 spin_unlock_bh(&jme->phy_lock);
2376 return rc;
2377}
2378
2379static int
2380jme_set_settings(struct net_device *netdev,
2381 struct ethtool_cmd *ecmd)
2382{
2383 struct jme_adapter *jme = netdev_priv(netdev);
2384 int rc, fdc = 0;
2385
2386 if (ecmd->speed == SPEED_1000 && ecmd->autoneg != AUTONEG_ENABLE)
2387 return -EINVAL;
2388
2389 if (jme->mii_if.force_media &&
2390 ecmd->autoneg != AUTONEG_ENABLE &&
2391 (jme->mii_if.full_duplex != ecmd->duplex))
2392 fdc = 1;
2393
2394 spin_lock_bh(&jme->phy_lock);
2395 rc = mii_ethtool_sset(&(jme->mii_if), ecmd);
2396 spin_unlock_bh(&jme->phy_lock);
2397
2398 if (!rc && fdc)
2399 jme_reset_link(jme);
2400
2401 if (!rc) {
2402 set_bit(JME_FLAG_SSET, &jme->flags);
2403 jme->old_ecmd = *ecmd;
2404 }
2405
2406 return rc;
2407}
2408
2409static u32
2410jme_get_link(struct net_device *netdev)
2411{
2412 struct jme_adapter *jme = netdev_priv(netdev);
2413 return jread32(jme, JME_PHY_LINK) & PHY_LINK_UP;
2414}
2415
2416static u32
2417jme_get_msglevel(struct net_device *netdev)
2418{
2419 struct jme_adapter *jme = netdev_priv(netdev);
2420 return jme->msg_enable;
2421}
2422
2423static void
2424jme_set_msglevel(struct net_device *netdev, u32 value)
2425{
2426 struct jme_adapter *jme = netdev_priv(netdev);
2427 jme->msg_enable = value;
2428}
2429
2430static u32
2431jme_get_rx_csum(struct net_device *netdev)
2432{
2433 struct jme_adapter *jme = netdev_priv(netdev);
2434 return jme->reg_rxmcs & RXMCS_CHECKSUM;
2435}
2436
2437static int
2438jme_set_rx_csum(struct net_device *netdev, u32 on)
2439{
2440 struct jme_adapter *jme = netdev_priv(netdev);
2441
2442 spin_lock_bh(&jme->rxmcs_lock);
2443 if (on)
2444 jme->reg_rxmcs |= RXMCS_CHECKSUM;
2445 else
2446 jme->reg_rxmcs &= ~RXMCS_CHECKSUM;
2447 jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2448 spin_unlock_bh(&jme->rxmcs_lock);
2449
2450 return 0;
2451}
2452
2453static int
2454jme_set_tx_csum(struct net_device *netdev, u32 on)
2455{
2456 struct jme_adapter *jme = netdev_priv(netdev);
2457
2458 if (on) {
2459 set_bit(JME_FLAG_TXCSUM, &jme->flags);
2460 if (netdev->mtu <= 1900)
2461 netdev->features |= NETIF_F_HW_CSUM;
2462 } else {
2463 clear_bit(JME_FLAG_TXCSUM, &jme->flags);
2464 netdev->features &= ~NETIF_F_HW_CSUM;
2465 }
2466
2467 return 0;
2468}
2469
2470static int
2471jme_set_tso(struct net_device *netdev, u32 on)
2472{
2473 struct jme_adapter *jme = netdev_priv(netdev);
2474
2475 if (on) {
2476 set_bit(JME_FLAG_TSO, &jme->flags);
2477 if (netdev->mtu <= 1900)
2478 netdev->features |= NETIF_F_TSO | NETIF_F_TSO6;
2479 } else {
2480 clear_bit(JME_FLAG_TSO, &jme->flags);
2481 netdev->features &= ~(NETIF_F_TSO | NETIF_F_TSO6);
2482 }
2483
2484 return 0;
2485}
2486
2487static int
2488jme_nway_reset(struct net_device *netdev)
2489{
2490 struct jme_adapter *jme = netdev_priv(netdev);
2491 jme_restart_an(jme);
2492 return 0;
2493}
2494
2495static u8
2496jme_smb_read(struct jme_adapter *jme, unsigned int addr)
2497{
2498 u32 val;
2499 int to;
2500
2501 val = jread32(jme, JME_SMBCSR);
2502 to = JME_SMB_BUSY_TIMEOUT;
2503 while ((val & SMBCSR_BUSY) && --to) {
2504 msleep(1);
2505 val = jread32(jme, JME_SMBCSR);
2506 }
2507 if (!to) {
2508 netif_err(jme, hw, jme->dev, "SMB Bus Busy.\n");
2509 return 0xFF;
2510 }
2511
2512 jwrite32(jme, JME_SMBINTF,
2513 ((addr << SMBINTF_HWADDR_SHIFT) & SMBINTF_HWADDR) |
2514 SMBINTF_HWRWN_READ |
2515 SMBINTF_HWCMD);
2516
2517 val = jread32(jme, JME_SMBINTF);
2518 to = JME_SMB_BUSY_TIMEOUT;
2519 while ((val & SMBINTF_HWCMD) && --to) {
2520 msleep(1);
2521 val = jread32(jme, JME_SMBINTF);
2522 }
2523 if (!to) {
2524 netif_err(jme, hw, jme->dev, "SMB Bus Busy.\n");
2525 return 0xFF;
2526 }
2527
2528 return (val & SMBINTF_HWDATR) >> SMBINTF_HWDATR_SHIFT;
2529}
2530
2531static void
2532jme_smb_write(struct jme_adapter *jme, unsigned int addr, u8 data)
2533{
2534 u32 val;
2535 int to;
2536
2537 val = jread32(jme, JME_SMBCSR);
2538 to = JME_SMB_BUSY_TIMEOUT;
2539 while ((val & SMBCSR_BUSY) && --to) {
2540 msleep(1);
2541 val = jread32(jme, JME_SMBCSR);
2542 }
2543 if (!to) {
2544 netif_err(jme, hw, jme->dev, "SMB Bus Busy.\n");
2545 return;
2546 }
2547
2548 jwrite32(jme, JME_SMBINTF,
2549 ((data << SMBINTF_HWDATW_SHIFT) & SMBINTF_HWDATW) |
2550 ((addr << SMBINTF_HWADDR_SHIFT) & SMBINTF_HWADDR) |
2551 SMBINTF_HWRWN_WRITE |
2552 SMBINTF_HWCMD);
2553
2554 val = jread32(jme, JME_SMBINTF);
2555 to = JME_SMB_BUSY_TIMEOUT;
2556 while ((val & SMBINTF_HWCMD) && --to) {
2557 msleep(1);
2558 val = jread32(jme, JME_SMBINTF);
2559 }
2560 if (!to) {
2561 netif_err(jme, hw, jme->dev, "SMB Bus Busy.\n");
2562 return;
2563 }
2564
2565 mdelay(2);
2566}
2567
2568static int
2569jme_get_eeprom_len(struct net_device *netdev)
2570{
2571 struct jme_adapter *jme = netdev_priv(netdev);
2572 u32 val;
2573 val = jread32(jme, JME_SMBCSR);
2574 return (val & SMBCSR_EEPROMD) ? JME_SMB_LEN : 0;
2575}
2576
2577static int
2578jme_get_eeprom(struct net_device *netdev,
2579 struct ethtool_eeprom *eeprom, u8 *data)
2580{
2581 struct jme_adapter *jme = netdev_priv(netdev);
2582 int i, offset = eeprom->offset, len = eeprom->len;
2583
2584 /*
2585 * ethtool will check the boundary for us
2586 */
2587 eeprom->magic = JME_EEPROM_MAGIC;
2588 for (i = 0 ; i < len ; ++i)
2589 data[i] = jme_smb_read(jme, i + offset);
2590
2591 return 0;
2592}
2593
2594static int
2595jme_set_eeprom(struct net_device *netdev,
2596 struct ethtool_eeprom *eeprom, u8 *data)
2597{
2598 struct jme_adapter *jme = netdev_priv(netdev);
2599 int i, offset = eeprom->offset, len = eeprom->len;
2600
2601 if (eeprom->magic != JME_EEPROM_MAGIC)
2602 return -EINVAL;
2603
2604 /*
2605 * ethtool will check the boundary for us
2606 */
2607 for (i = 0 ; i < len ; ++i)
2608 jme_smb_write(jme, i + offset, data[i]);
2609
2610 return 0;
2611}
2612
2613static const struct ethtool_ops jme_ethtool_ops = {
2614 .get_drvinfo = jme_get_drvinfo,
2615 .get_regs_len = jme_get_regs_len,
2616 .get_regs = jme_get_regs,
2617 .get_coalesce = jme_get_coalesce,
2618 .set_coalesce = jme_set_coalesce,
2619 .get_pauseparam = jme_get_pauseparam,
2620 .set_pauseparam = jme_set_pauseparam,
2621 .get_wol = jme_get_wol,
2622 .set_wol = jme_set_wol,
2623 .get_settings = jme_get_settings,
2624 .set_settings = jme_set_settings,
2625 .get_link = jme_get_link,
2626 .get_msglevel = jme_get_msglevel,
2627 .set_msglevel = jme_set_msglevel,
2628 .get_rx_csum = jme_get_rx_csum,
2629 .set_rx_csum = jme_set_rx_csum,
2630 .set_tx_csum = jme_set_tx_csum,
2631 .set_tso = jme_set_tso,
2632 .set_sg = ethtool_op_set_sg,
2633 .nway_reset = jme_nway_reset,
2634 .get_eeprom_len = jme_get_eeprom_len,
2635 .get_eeprom = jme_get_eeprom,
2636 .set_eeprom = jme_set_eeprom,
2637};
2638
2639static int
2640jme_pci_dma64(struct pci_dev *pdev)
2641{
2642 if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250 &&
2643 !pci_set_dma_mask(pdev, DMA_BIT_MASK(64)))
2644 if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)))
2645 return 1;
2646
2647 if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250 &&
2648 !pci_set_dma_mask(pdev, DMA_BIT_MASK(40)))
2649 if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(40)))
2650 return 1;
2651
2652 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32)))
2653 if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)))
2654 return 0;
2655
2656 return -1;
2657}
2658
2659static inline void
2660jme_phy_init(struct jme_adapter *jme)
2661{
2662 u16 reg26;
2663
2664 reg26 = jme_mdio_read(jme->dev, jme->mii_if.phy_id, 26);
2665 jme_mdio_write(jme->dev, jme->mii_if.phy_id, 26, reg26 | 0x1000);
2666}
2667
2668static inline void
2669jme_check_hw_ver(struct jme_adapter *jme)
2670{
2671 u32 chipmode;
2672
2673 chipmode = jread32(jme, JME_CHIPMODE);
2674
2675 jme->fpgaver = (chipmode & CM_FPGAVER_MASK) >> CM_FPGAVER_SHIFT;
2676 jme->chiprev = (chipmode & CM_CHIPREV_MASK) >> CM_CHIPREV_SHIFT;
2677}
2678
2679static const struct net_device_ops jme_netdev_ops = {
2680 .ndo_open = jme_open,
2681 .ndo_stop = jme_close,
2682 .ndo_validate_addr = eth_validate_addr,
2683 .ndo_start_xmit = jme_start_xmit,
2684 .ndo_set_mac_address = jme_set_macaddr,
2685 .ndo_set_multicast_list = jme_set_multi,
2686 .ndo_change_mtu = jme_change_mtu,
2687 .ndo_tx_timeout = jme_tx_timeout,
2688 .ndo_vlan_rx_register = jme_vlan_rx_register,
2689};
2690
2691static int __devinit
2692jme_init_one(struct pci_dev *pdev,
2693 const struct pci_device_id *ent)
2694{
2695 int rc = 0, using_dac, i;
2696 struct net_device *netdev;
2697 struct jme_adapter *jme;
2698 u16 bmcr, bmsr;
2699 u32 apmc;
2700
2701 /*
2702 * set up PCI device basics
2703 */
2704 rc = pci_enable_device(pdev);
2705 if (rc) {
2706 jeprintk(pdev, "Cannot enable PCI device.\n");
2707 goto err_out;
2708 }
2709
2710 using_dac = jme_pci_dma64(pdev);
2711 if (using_dac < 0) {
2712 jeprintk(pdev, "Cannot set PCI DMA Mask.\n");
2713 rc = -EIO;
2714 goto err_out_disable_pdev;
2715 }
2716
2717 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
2718 jeprintk(pdev, "No PCI resource region found.\n");
2719 rc = -ENOMEM;
2720 goto err_out_disable_pdev;
2721 }
2722
2723 rc = pci_request_regions(pdev, DRV_NAME);
2724 if (rc) {
2725 jeprintk(pdev, "Cannot obtain PCI resource region.\n");
2726 goto err_out_disable_pdev;
2727 }
2728
2729 pci_set_master(pdev);
2730
2731 /*
2732 * alloc and init net device
2733 */
2734 netdev = alloc_etherdev(sizeof(*jme));
2735 if (!netdev) {
2736 jeprintk(pdev, "Cannot allocate netdev structure.\n");
2737 rc = -ENOMEM;
2738 goto err_out_release_regions;
2739 }
2740 netdev->netdev_ops = &jme_netdev_ops;
2741 netdev->ethtool_ops = &jme_ethtool_ops;
2742 netdev->watchdog_timeo = TX_TIMEOUT;
2743 netdev->features = NETIF_F_HW_CSUM |
2744 NETIF_F_SG |
2745 NETIF_F_TSO |
2746 NETIF_F_TSO6 |
2747 NETIF_F_HW_VLAN_TX |
2748 NETIF_F_HW_VLAN_RX;
2749 if (using_dac)
2750 netdev->features |= NETIF_F_HIGHDMA;
2751
2752 SET_NETDEV_DEV(netdev, &pdev->dev);
2753 pci_set_drvdata(pdev, netdev);
2754
2755 /*
2756 * init adapter info
2757 */
2758 jme = netdev_priv(netdev);
2759 jme->pdev = pdev;
2760 jme->dev = netdev;
2761 jme->jme_rx = netif_rx;
2762 jme->jme_vlan_rx = vlan_hwaccel_rx;
2763 jme->old_mtu = netdev->mtu = 1500;
2764 jme->phylink = 0;
2765 jme->tx_ring_size = 1 << 10;
2766 jme->tx_ring_mask = jme->tx_ring_size - 1;
2767 jme->tx_wake_threshold = 1 << 9;
2768 jme->rx_ring_size = 1 << 9;
2769 jme->rx_ring_mask = jme->rx_ring_size - 1;
2770 jme->msg_enable = JME_DEF_MSG_ENABLE;
2771 jme->regs = ioremap(pci_resource_start(pdev, 0),
2772 pci_resource_len(pdev, 0));
2773 if (!(jme->regs)) {
2774 jeprintk(pdev, "Mapping PCI resource region error.\n");
2775 rc = -ENOMEM;
2776 goto err_out_free_netdev;
2777 }
2778
2779 if (no_pseudohp) {
2780 apmc = jread32(jme, JME_APMC) & ~JME_APMC_PSEUDO_HP_EN;
2781 jwrite32(jme, JME_APMC, apmc);
2782 } else if (force_pseudohp) {
2783 apmc = jread32(jme, JME_APMC) | JME_APMC_PSEUDO_HP_EN;
2784 jwrite32(jme, JME_APMC, apmc);
2785 }
2786
2787 NETIF_NAPI_SET(netdev, &jme->napi, jme_poll, jme->rx_ring_size >> 2)
2788
2789 spin_lock_init(&jme->phy_lock);
2790 spin_lock_init(&jme->macaddr_lock);
2791 spin_lock_init(&jme->rxmcs_lock);
2792
2793 atomic_set(&jme->link_changing, 1);
2794 atomic_set(&jme->rx_cleaning, 1);
2795 atomic_set(&jme->tx_cleaning, 1);
2796 atomic_set(&jme->rx_empty, 1);
2797
2798 tasklet_init(&jme->pcc_task,
2799 jme_pcc_tasklet,
2800 (unsigned long) jme);
2801 tasklet_init(&jme->linkch_task,
2802 jme_link_change_tasklet,
2803 (unsigned long) jme);
2804 tasklet_init(&jme->txclean_task,
2805 jme_tx_clean_tasklet,
2806 (unsigned long) jme);
2807 tasklet_init(&jme->rxclean_task,
2808 jme_rx_clean_tasklet,
2809 (unsigned long) jme);
2810 tasklet_init(&jme->rxempty_task,
2811 jme_rx_empty_tasklet,
2812 (unsigned long) jme);
2813 tasklet_disable_nosync(&jme->linkch_task);
2814 tasklet_disable_nosync(&jme->txclean_task);
2815 tasklet_disable_nosync(&jme->rxclean_task);
2816 tasklet_disable_nosync(&jme->rxempty_task);
2817 jme->dpi.cur = PCC_P1;
2818
2819 jme->reg_ghc = 0;
2820 jme->reg_rxcs = RXCS_DEFAULT;
2821 jme->reg_rxmcs = RXMCS_DEFAULT;
2822 jme->reg_txpfc = 0;
2823 jme->reg_pmcs = PMCS_MFEN;
2824 set_bit(JME_FLAG_TXCSUM, &jme->flags);
2825 set_bit(JME_FLAG_TSO, &jme->flags);
2826
2827 /*
2828 * Get Max Read Req Size from PCI Config Space
2829 */
2830 pci_read_config_byte(pdev, PCI_DCSR_MRRS, &jme->mrrs);
2831 jme->mrrs &= PCI_DCSR_MRRS_MASK;
2832 switch (jme->mrrs) {
2833 case MRRS_128B:
2834 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_128B;
2835 break;
2836 case MRRS_256B:
2837 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_256B;
2838 break;
2839 default:
2840 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_512B;
2841 break;
2842 };
2843
2844 /*
2845 * Must check before reset_mac_processor
2846 */
2847 jme_check_hw_ver(jme);
2848 jme->mii_if.dev = netdev;
2849 if (jme->fpgaver) {
2850 jme->mii_if.phy_id = 0;
2851 for (i = 1 ; i < 32 ; ++i) {
2852 bmcr = jme_mdio_read(netdev, i, MII_BMCR);
2853 bmsr = jme_mdio_read(netdev, i, MII_BMSR);
2854 if (bmcr != 0xFFFFU && (bmcr != 0 || bmsr != 0)) {
2855 jme->mii_if.phy_id = i;
2856 break;
2857 }
2858 }
2859
2860 if (!jme->mii_if.phy_id) {
2861 rc = -EIO;
2862 jeprintk(pdev, "Can not find phy_id.\n");
2863 goto err_out_unmap;
2864 }
2865
2866 jme->reg_ghc |= GHC_LINK_POLL;
2867 } else {
2868 jme->mii_if.phy_id = 1;
2869 }
2870 if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250)
2871 jme->mii_if.supports_gmii = true;
2872 else
2873 jme->mii_if.supports_gmii = false;
2874 jme->mii_if.mdio_read = jme_mdio_read;
2875 jme->mii_if.mdio_write = jme_mdio_write;
2876
2877 jme_clear_pm(jme);
2878 jme_set_phyfifoa(jme);
2879 pci_read_config_byte(pdev, PCI_REVISION_ID, &jme->rev);
2880 if (!jme->fpgaver)
2881 jme_phy_init(jme);
2882 jme_phy_off(jme);
2883
2884 /*
2885 * Reset MAC processor and reload EEPROM for MAC Address
2886 */
2887 jme_reset_mac_processor(jme);
2888 rc = jme_reload_eeprom(jme);
2889 if (rc) {
2890 jeprintk(pdev,
2891 "Reload eeprom for reading MAC Address error.\n");
2892 goto err_out_unmap;
2893 }
2894 jme_load_macaddr(netdev);
2895
2896 /*
2897 * Tell stack that we are not ready to work until open()
2898 */
2899 netif_carrier_off(netdev);
2900 netif_stop_queue(netdev);
2901
2902 /*
2903 * Register netdev
2904 */
2905 rc = register_netdev(netdev);
2906 if (rc) {
2907 jeprintk(pdev, "Cannot register net device.\n");
2908 goto err_out_unmap;
2909 }
2910
2911 netif_info(jme, probe, jme->dev, "%s%s ver:%x rev:%x macaddr:%pM\n",
2912 (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC250) ?
2913 "JMC250 Gigabit Ethernet" :
2914 (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC260) ?
2915 "JMC260 Fast Ethernet" : "Unknown",
2916 (jme->fpgaver != 0) ? " (FPGA)" : "",
2917 (jme->fpgaver != 0) ? jme->fpgaver : jme->chiprev,
2918 jme->rev, netdev->dev_addr);
2919
2920 return 0;
2921
2922err_out_unmap:
2923 iounmap(jme->regs);
2924err_out_free_netdev:
2925 pci_set_drvdata(pdev, NULL);
2926 free_netdev(netdev);
2927err_out_release_regions:
2928 pci_release_regions(pdev);
2929err_out_disable_pdev:
2930 pci_disable_device(pdev);
2931err_out:
2932 return rc;
2933}
2934
2935static void __devexit
2936jme_remove_one(struct pci_dev *pdev)
2937{
2938 struct net_device *netdev = pci_get_drvdata(pdev);
2939 struct jme_adapter *jme = netdev_priv(netdev);
2940
2941 unregister_netdev(netdev);
2942 iounmap(jme->regs);
2943 pci_set_drvdata(pdev, NULL);
2944 free_netdev(netdev);
2945 pci_release_regions(pdev);
2946 pci_disable_device(pdev);
2947
2948}
2949
2950#ifdef CONFIG_PM
2951static int
2952jme_suspend(struct pci_dev *pdev, pm_message_t state)
2953{
2954 struct net_device *netdev = pci_get_drvdata(pdev);
2955 struct jme_adapter *jme = netdev_priv(netdev);
2956
2957 atomic_dec(&jme->link_changing);
2958
2959 netif_device_detach(netdev);
2960 netif_stop_queue(netdev);
2961 jme_stop_irq(jme);
2962
2963 tasklet_disable(&jme->txclean_task);
2964 tasklet_disable(&jme->rxclean_task);
2965 tasklet_disable(&jme->rxempty_task);
2966
2967 if (netif_carrier_ok(netdev)) {
2968 if (test_bit(JME_FLAG_POLL, &jme->flags))
2969 jme_polling_mode(jme);
2970
2971 jme_stop_pcc_timer(jme);
2972 jme_reset_ghc_speed(jme);
2973 jme_disable_rx_engine(jme);
2974 jme_disable_tx_engine(jme);
2975 jme_reset_mac_processor(jme);
2976 jme_free_rx_resources(jme);
2977 jme_free_tx_resources(jme);
2978 netif_carrier_off(netdev);
2979 jme->phylink = 0;
2980 }
2981
2982 tasklet_enable(&jme->txclean_task);
2983 tasklet_hi_enable(&jme->rxclean_task);
2984 tasklet_hi_enable(&jme->rxempty_task);
2985
2986 pci_save_state(pdev);
2987 if (jme->reg_pmcs) {
2988 jme_set_100m_half(jme);
2989
2990 if (jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN))
2991 jme_wait_link(jme);
2992
2993 jwrite32(jme, JME_PMCS, jme->reg_pmcs);
2994
2995 pci_enable_wake(pdev, PCI_D3cold, true);
2996 } else {
2997 jme_phy_off(jme);
2998 }
2999 pci_set_power_state(pdev, PCI_D3cold);
3000
3001 return 0;
3002}
3003
3004static int
3005jme_resume(struct pci_dev *pdev)
3006{
3007 struct net_device *netdev = pci_get_drvdata(pdev);
3008 struct jme_adapter *jme = netdev_priv(netdev);
3009
3010 jme_clear_pm(jme);
3011 pci_restore_state(pdev);
3012
3013 if (test_bit(JME_FLAG_SSET, &jme->flags))
3014 jme_set_settings(netdev, &jme->old_ecmd);
3015 else
3016 jme_reset_phy_processor(jme);
3017
3018 jme_start_irq(jme);
3019 netif_device_attach(netdev);
3020
3021 atomic_inc(&jme->link_changing);
3022
3023 jme_reset_link(jme);
3024
3025 return 0;
3026}
3027#endif
3028
3029static DEFINE_PCI_DEVICE_TABLE(jme_pci_tbl) = {
3030 { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMC250) },
3031 { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMC260) },
3032 { }
3033};
3034
3035static struct pci_driver jme_driver = {
3036 .name = DRV_NAME,
3037 .id_table = jme_pci_tbl,
3038 .probe = jme_init_one,
3039 .remove = __devexit_p(jme_remove_one),
3040#ifdef CONFIG_PM
3041 .suspend = jme_suspend,
3042 .resume = jme_resume,
3043#endif /* CONFIG_PM */
3044};
3045
3046static int __init
3047jme_init_module(void)
3048{
3049 printk(KERN_INFO PFX "JMicron JMC2XX ethernet "
3050 "driver version %s\n", DRV_VERSION);
3051 return pci_register_driver(&jme_driver);
3052}
3053
3054static void __exit
3055jme_cleanup_module(void)
3056{
3057 pci_unregister_driver(&jme_driver);
3058}
3059
3060module_init(jme_init_module);
3061module_exit(jme_cleanup_module);
3062
3063MODULE_AUTHOR("Guo-Fu Tseng <cooldavid@cooldavid.org>");
3064MODULE_DESCRIPTION("JMicron JMC2x0 PCI Express Ethernet driver");
3065MODULE_LICENSE("GPL");
3066MODULE_VERSION(DRV_VERSION);
3067MODULE_DEVICE_TABLE(pci, jme_pci_tbl);
3068
JMicron Ethernet Linux driver