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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * JMicron JMC2x0 series PCIe Ethernet Linux Device Driver
4 *
5 * Copyright 2008 JMicron Technology Corporation
6 * https://www.jmicron.com/
7 * Copyright (c) 2009 - 2010 Guo-Fu Tseng <cooldavid@cooldavid.org>
8 *
9 * Author: Guo-Fu Tseng <cooldavid@cooldavid.org>
10 */
11
12#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
13
14#include <linux/module.h>
15#include <linux/kernel.h>
16#include <linux/pci.h>
17#include <linux/netdevice.h>
18#include <linux/etherdevice.h>
19#include <linux/ethtool.h>
20#include <linux/mii.h>
21#include <linux/crc32.h>
22#include <linux/delay.h>
23#include <linux/spinlock.h>
24#include <linux/in.h>
25#include <linux/ip.h>
26#include <linux/ipv6.h>
27#include <linux/tcp.h>
28#include <linux/udp.h>
29#include <linux/if_vlan.h>
30#include <linux/slab.h>
31#include <linux/jiffies.h>
32#include <net/ip6_checksum.h>
33#include "jme.h"
34
35static int force_pseudohp = -1;
36static int no_pseudohp = -1;
37static int no_extplug = -1;
38module_param(force_pseudohp, int, 0);
39MODULE_PARM_DESC(force_pseudohp,
40 "Enable pseudo hot-plug feature manually by driver instead of BIOS.");
41module_param(no_pseudohp, int, 0);
42MODULE_PARM_DESC(no_pseudohp, "Disable pseudo hot-plug feature.");
43module_param(no_extplug, int, 0);
44MODULE_PARM_DESC(no_extplug,
45 "Do not use external plug signal for pseudo hot-plug.");
46
47static int
48jme_mdio_read(struct net_device *netdev, int phy, int reg)
49{
50 struct jme_adapter *jme = netdev_priv(netdev);
51 int i, val, again = (reg == MII_BMSR) ? 1 : 0;
52
53read_again:
54 jwrite32(jme, JME_SMI, SMI_OP_REQ |
55 smi_phy_addr(phy) |
56 smi_reg_addr(reg));
57
58 wmb();
59 for (i = JME_PHY_TIMEOUT * 50 ; i > 0 ; --i) {
60 udelay(20);
61 val = jread32(jme, JME_SMI);
62 if ((val & SMI_OP_REQ) == 0)
63 break;
64 }
65
66 if (i == 0) {
67 pr_err("phy(%d) read timeout : %d\n", phy, reg);
68 return 0;
69 }
70
71 if (again--)
72 goto read_again;
73
74 return (val & SMI_DATA_MASK) >> SMI_DATA_SHIFT;
75}
76
77static void
78jme_mdio_write(struct net_device *netdev,
79 int phy, int reg, int val)
80{
81 struct jme_adapter *jme = netdev_priv(netdev);
82 int i;
83
84 jwrite32(jme, JME_SMI, SMI_OP_WRITE | SMI_OP_REQ |
85 ((val << SMI_DATA_SHIFT) & SMI_DATA_MASK) |
86 smi_phy_addr(phy) | smi_reg_addr(reg));
87
88 wmb();
89 for (i = JME_PHY_TIMEOUT * 50 ; i > 0 ; --i) {
90 udelay(20);
91 if ((jread32(jme, JME_SMI) & SMI_OP_REQ) == 0)
92 break;
93 }
94
95 if (i == 0)
96 pr_err("phy(%d) write timeout : %d\n", phy, reg);
97}
98
99static inline void
100jme_reset_phy_processor(struct jme_adapter *jme)
101{
102 u32 val;
103
104 jme_mdio_write(jme->dev,
105 jme->mii_if.phy_id,
106 MII_ADVERTISE, ADVERTISE_ALL |
107 ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
108
109 if (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC250)
110 jme_mdio_write(jme->dev,
111 jme->mii_if.phy_id,
112 MII_CTRL1000,
113 ADVERTISE_1000FULL | ADVERTISE_1000HALF);
114
115 val = jme_mdio_read(jme->dev,
116 jme->mii_if.phy_id,
117 MII_BMCR);
118
119 jme_mdio_write(jme->dev,
120 jme->mii_if.phy_id,
121 MII_BMCR, val | BMCR_RESET);
122}
123
124static void
125jme_setup_wakeup_frame(struct jme_adapter *jme,
126 const u32 *mask, u32 crc, int fnr)
127{
128 int i;
129
130 /*
131 * Setup CRC pattern
132 */
133 jwrite32(jme, JME_WFOI, WFOI_CRC_SEL | (fnr & WFOI_FRAME_SEL));
134 wmb();
135 jwrite32(jme, JME_WFODP, crc);
136 wmb();
137
138 /*
139 * Setup Mask
140 */
141 for (i = 0 ; i < WAKEUP_FRAME_MASK_DWNR ; ++i) {
142 jwrite32(jme, JME_WFOI,
143 ((i << WFOI_MASK_SHIFT) & WFOI_MASK_SEL) |
144 (fnr & WFOI_FRAME_SEL));
145 wmb();
146 jwrite32(jme, JME_WFODP, mask[i]);
147 wmb();
148 }
149}
150
151static inline void
152jme_mac_rxclk_off(struct jme_adapter *jme)
153{
154 jme->reg_gpreg1 |= GPREG1_RXCLKOFF;
155 jwrite32f(jme, JME_GPREG1, jme->reg_gpreg1);
156}
157
158static inline void
159jme_mac_rxclk_on(struct jme_adapter *jme)
160{
161 jme->reg_gpreg1 &= ~GPREG1_RXCLKOFF;
162 jwrite32f(jme, JME_GPREG1, jme->reg_gpreg1);
163}
164
165static inline void
166jme_mac_txclk_off(struct jme_adapter *jme)
167{
168 jme->reg_ghc &= ~(GHC_TO_CLK_SRC | GHC_TXMAC_CLK_SRC);
169 jwrite32f(jme, JME_GHC, jme->reg_ghc);
170}
171
172static inline void
173jme_mac_txclk_on(struct jme_adapter *jme)
174{
175 u32 speed = jme->reg_ghc & GHC_SPEED;
176 if (speed == GHC_SPEED_1000M)
177 jme->reg_ghc |= GHC_TO_CLK_GPHY | GHC_TXMAC_CLK_GPHY;
178 else
179 jme->reg_ghc |= GHC_TO_CLK_PCIE | GHC_TXMAC_CLK_PCIE;
180 jwrite32f(jme, JME_GHC, jme->reg_ghc);
181}
182
183static inline void
184jme_reset_ghc_speed(struct jme_adapter *jme)
185{
186 jme->reg_ghc &= ~(GHC_SPEED | GHC_DPX);
187 jwrite32f(jme, JME_GHC, jme->reg_ghc);
188}
189
190static inline void
191jme_reset_250A2_workaround(struct jme_adapter *jme)
192{
193 jme->reg_gpreg1 &= ~(GPREG1_HALFMODEPATCH |
194 GPREG1_RSSPATCH);
195 jwrite32(jme, JME_GPREG1, jme->reg_gpreg1);
196}
197
198static inline void
199jme_assert_ghc_reset(struct jme_adapter *jme)
200{
201 jme->reg_ghc |= GHC_SWRST;
202 jwrite32f(jme, JME_GHC, jme->reg_ghc);
203}
204
205static inline void
206jme_clear_ghc_reset(struct jme_adapter *jme)
207{
208 jme->reg_ghc &= ~GHC_SWRST;
209 jwrite32f(jme, JME_GHC, jme->reg_ghc);
210}
211
212static void
213jme_reset_mac_processor(struct jme_adapter *jme)
214{
215 static const u32 mask[WAKEUP_FRAME_MASK_DWNR] = {0, 0, 0, 0};
216 u32 crc = 0xCDCDCDCD;
217 u32 gpreg0;
218 int i;
219
220 jme_reset_ghc_speed(jme);
221 jme_reset_250A2_workaround(jme);
222
223 jme_mac_rxclk_on(jme);
224 jme_mac_txclk_on(jme);
225 udelay(1);
226 jme_assert_ghc_reset(jme);
227 udelay(1);
228 jme_mac_rxclk_off(jme);
229 jme_mac_txclk_off(jme);
230 udelay(1);
231 jme_clear_ghc_reset(jme);
232 udelay(1);
233 jme_mac_rxclk_on(jme);
234 jme_mac_txclk_on(jme);
235 udelay(1);
236 jme_mac_rxclk_off(jme);
237 jme_mac_txclk_off(jme);
238
239 jwrite32(jme, JME_RXDBA_LO, 0x00000000);
240 jwrite32(jme, JME_RXDBA_HI, 0x00000000);
241 jwrite32(jme, JME_RXQDC, 0x00000000);
242 jwrite32(jme, JME_RXNDA, 0x00000000);
243 jwrite32(jme, JME_TXDBA_LO, 0x00000000);
244 jwrite32(jme, JME_TXDBA_HI, 0x00000000);
245 jwrite32(jme, JME_TXQDC, 0x00000000);
246 jwrite32(jme, JME_TXNDA, 0x00000000);
247
248 jwrite32(jme, JME_RXMCHT_LO, 0x00000000);
249 jwrite32(jme, JME_RXMCHT_HI, 0x00000000);
250 for (i = 0 ; i < WAKEUP_FRAME_NR ; ++i)
251 jme_setup_wakeup_frame(jme, mask, crc, i);
252 if (jme->fpgaver)
253 gpreg0 = GPREG0_DEFAULT | GPREG0_LNKINTPOLL;
254 else
255 gpreg0 = GPREG0_DEFAULT;
256 jwrite32(jme, JME_GPREG0, gpreg0);
257}
258
259static inline void
260jme_clear_pm_enable_wol(struct jme_adapter *jme)
261{
262 jwrite32(jme, JME_PMCS, PMCS_STMASK | jme->reg_pmcs);
263}
264
265static inline void
266jme_clear_pm_disable_wol(struct jme_adapter *jme)
267{
268 jwrite32(jme, JME_PMCS, PMCS_STMASK);
269}
270
271static int
272jme_reload_eeprom(struct jme_adapter *jme)
273{
274 u32 val;
275 int i;
276
277 val = jread32(jme, JME_SMBCSR);
278
279 if (val & SMBCSR_EEPROMD) {
280 val |= SMBCSR_CNACK;
281 jwrite32(jme, JME_SMBCSR, val);
282 val |= SMBCSR_RELOAD;
283 jwrite32(jme, JME_SMBCSR, val);
284 mdelay(12);
285
286 for (i = JME_EEPROM_RELOAD_TIMEOUT; i > 0; --i) {
287 mdelay(1);
288 if ((jread32(jme, JME_SMBCSR) & SMBCSR_RELOAD) == 0)
289 break;
290 }
291
292 if (i == 0) {
293 pr_err("eeprom reload timeout\n");
294 return -EIO;
295 }
296 }
297
298 return 0;
299}
300
301static void
302jme_load_macaddr(struct net_device *netdev)
303{
304 struct jme_adapter *jme = netdev_priv(netdev);
305 unsigned char macaddr[ETH_ALEN];
306 u32 val;
307
308 spin_lock_bh(&jme->macaddr_lock);
309 val = jread32(jme, JME_RXUMA_LO);
310 macaddr[0] = (val >> 0) & 0xFF;
311 macaddr[1] = (val >> 8) & 0xFF;
312 macaddr[2] = (val >> 16) & 0xFF;
313 macaddr[3] = (val >> 24) & 0xFF;
314 val = jread32(jme, JME_RXUMA_HI);
315 macaddr[4] = (val >> 0) & 0xFF;
316 macaddr[5] = (val >> 8) & 0xFF;
317 eth_hw_addr_set(netdev, macaddr);
318 spin_unlock_bh(&jme->macaddr_lock);
319}
320
321static inline void
322jme_set_rx_pcc(struct jme_adapter *jme, int p)
323{
324 switch (p) {
325 case PCC_OFF:
326 jwrite32(jme, JME_PCCRX0,
327 ((PCC_OFF_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
328 ((PCC_OFF_CNT << PCCRX_SHIFT) & PCCRX_MASK));
329 break;
330 case PCC_P1:
331 jwrite32(jme, JME_PCCRX0,
332 ((PCC_P1_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
333 ((PCC_P1_CNT << PCCRX_SHIFT) & PCCRX_MASK));
334 break;
335 case PCC_P2:
336 jwrite32(jme, JME_PCCRX0,
337 ((PCC_P2_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
338 ((PCC_P2_CNT << PCCRX_SHIFT) & PCCRX_MASK));
339 break;
340 case PCC_P3:
341 jwrite32(jme, JME_PCCRX0,
342 ((PCC_P3_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
343 ((PCC_P3_CNT << PCCRX_SHIFT) & PCCRX_MASK));
344 break;
345 default:
346 break;
347 }
348 wmb();
349
350 if (!(test_bit(JME_FLAG_POLL, &jme->flags)))
351 netif_info(jme, rx_status, jme->dev, "Switched to PCC_P%d\n", p);
352}
353
354static void
355jme_start_irq(struct jme_adapter *jme)
356{
357 register struct dynpcc_info *dpi = &(jme->dpi);
358
359 jme_set_rx_pcc(jme, PCC_P1);
360 dpi->cur = PCC_P1;
361 dpi->attempt = PCC_P1;
362 dpi->cnt = 0;
363
364 jwrite32(jme, JME_PCCTX,
365 ((PCC_TX_TO << PCCTXTO_SHIFT) & PCCTXTO_MASK) |
366 ((PCC_TX_CNT << PCCTX_SHIFT) & PCCTX_MASK) |
367 PCCTXQ0_EN
368 );
369
370 /*
371 * Enable Interrupts
372 */
373 jwrite32(jme, JME_IENS, INTR_ENABLE);
374}
375
376static inline void
377jme_stop_irq(struct jme_adapter *jme)
378{
379 /*
380 * Disable Interrupts
381 */
382 jwrite32f(jme, JME_IENC, INTR_ENABLE);
383}
384
385static u32
386jme_linkstat_from_phy(struct jme_adapter *jme)
387{
388 u32 phylink, bmsr;
389
390 phylink = jme_mdio_read(jme->dev, jme->mii_if.phy_id, 17);
391 bmsr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMSR);
392 if (bmsr & BMSR_ANCOMP)
393 phylink |= PHY_LINK_AUTONEG_COMPLETE;
394
395 return phylink;
396}
397
398static inline void
399jme_set_phyfifo_5level(struct jme_adapter *jme)
400{
401 jme_mdio_write(jme->dev, jme->mii_if.phy_id, 27, 0x0004);
402}
403
404static inline void
405jme_set_phyfifo_8level(struct jme_adapter *jme)
406{
407 jme_mdio_write(jme->dev, jme->mii_if.phy_id, 27, 0x0000);
408}
409
410static int
411jme_check_link(struct net_device *netdev, int testonly)
412{
413 struct jme_adapter *jme = netdev_priv(netdev);
414 u32 phylink, cnt = JME_SPDRSV_TIMEOUT, bmcr;
415 char linkmsg[64];
416 int rc = 0;
417
418 linkmsg[0] = '\0';
419
420 if (jme->fpgaver)
421 phylink = jme_linkstat_from_phy(jme);
422 else
423 phylink = jread32(jme, JME_PHY_LINK);
424
425 if (phylink & PHY_LINK_UP) {
426 if (!(phylink & PHY_LINK_AUTONEG_COMPLETE)) {
427 /*
428 * If we did not enable AN
429 * Speed/Duplex Info should be obtained from SMI
430 */
431 phylink = PHY_LINK_UP;
432
433 bmcr = jme_mdio_read(jme->dev,
434 jme->mii_if.phy_id,
435 MII_BMCR);
436
437 phylink |= ((bmcr & BMCR_SPEED1000) &&
438 (bmcr & BMCR_SPEED100) == 0) ?
439 PHY_LINK_SPEED_1000M :
440 (bmcr & BMCR_SPEED100) ?
441 PHY_LINK_SPEED_100M :
442 PHY_LINK_SPEED_10M;
443
444 phylink |= (bmcr & BMCR_FULLDPLX) ?
445 PHY_LINK_DUPLEX : 0;
446
447 strcat(linkmsg, "Forced: ");
448 } else {
449 /*
450 * Keep polling for speed/duplex resolve complete
451 */
452 while (!(phylink & PHY_LINK_SPEEDDPU_RESOLVED) &&
453 --cnt) {
454
455 udelay(1);
456
457 if (jme->fpgaver)
458 phylink = jme_linkstat_from_phy(jme);
459 else
460 phylink = jread32(jme, JME_PHY_LINK);
461 }
462 if (!cnt)
463 pr_err("Waiting speed resolve timeout\n");
464
465 strcat(linkmsg, "ANed: ");
466 }
467
468 if (jme->phylink == phylink) {
469 rc = 1;
470 goto out;
471 }
472 if (testonly)
473 goto out;
474
475 jme->phylink = phylink;
476
477 /*
478 * The speed/duplex setting of jme->reg_ghc already cleared
479 * by jme_reset_mac_processor()
480 */
481 switch (phylink & PHY_LINK_SPEED_MASK) {
482 case PHY_LINK_SPEED_10M:
483 jme->reg_ghc |= GHC_SPEED_10M;
484 strcat(linkmsg, "10 Mbps, ");
485 break;
486 case PHY_LINK_SPEED_100M:
487 jme->reg_ghc |= GHC_SPEED_100M;
488 strcat(linkmsg, "100 Mbps, ");
489 break;
490 case PHY_LINK_SPEED_1000M:
491 jme->reg_ghc |= GHC_SPEED_1000M;
492 strcat(linkmsg, "1000 Mbps, ");
493 break;
494 default:
495 break;
496 }
497
498 if (phylink & PHY_LINK_DUPLEX) {
499 jwrite32(jme, JME_TXMCS, TXMCS_DEFAULT);
500 jwrite32(jme, JME_TXTRHD, TXTRHD_FULLDUPLEX);
501 jme->reg_ghc |= GHC_DPX;
502 } else {
503 jwrite32(jme, JME_TXMCS, TXMCS_DEFAULT |
504 TXMCS_BACKOFF |
505 TXMCS_CARRIERSENSE |
506 TXMCS_COLLISION);
507 jwrite32(jme, JME_TXTRHD, TXTRHD_HALFDUPLEX);
508 }
509
510 jwrite32(jme, JME_GHC, jme->reg_ghc);
511
512 if (is_buggy250(jme->pdev->device, jme->chiprev)) {
513 jme->reg_gpreg1 &= ~(GPREG1_HALFMODEPATCH |
514 GPREG1_RSSPATCH);
515 if (!(phylink & PHY_LINK_DUPLEX))
516 jme->reg_gpreg1 |= GPREG1_HALFMODEPATCH;
517 switch (phylink & PHY_LINK_SPEED_MASK) {
518 case PHY_LINK_SPEED_10M:
519 jme_set_phyfifo_8level(jme);
520 jme->reg_gpreg1 |= GPREG1_RSSPATCH;
521 break;
522 case PHY_LINK_SPEED_100M:
523 jme_set_phyfifo_5level(jme);
524 jme->reg_gpreg1 |= GPREG1_RSSPATCH;
525 break;
526 case PHY_LINK_SPEED_1000M:
527 jme_set_phyfifo_8level(jme);
528 break;
529 default:
530 break;
531 }
532 }
533 jwrite32(jme, JME_GPREG1, jme->reg_gpreg1);
534
535 strcat(linkmsg, (phylink & PHY_LINK_DUPLEX) ?
536 "Full-Duplex, " :
537 "Half-Duplex, ");
538 strcat(linkmsg, (phylink & PHY_LINK_MDI_STAT) ?
539 "MDI-X" :
540 "MDI");
541 netif_info(jme, link, jme->dev, "Link is up at %s\n", linkmsg);
542 netif_carrier_on(netdev);
543 } else {
544 if (testonly)
545 goto out;
546
547 netif_info(jme, link, jme->dev, "Link is down\n");
548 jme->phylink = 0;
549 netif_carrier_off(netdev);
550 }
551
552out:
553 return rc;
554}
555
556static int
557jme_setup_tx_resources(struct jme_adapter *jme)
558{
559 struct jme_ring *txring = &(jme->txring[0]);
560
561 txring->alloc = dma_alloc_coherent(&(jme->pdev->dev),
562 TX_RING_ALLOC_SIZE(jme->tx_ring_size),
563 &(txring->dmaalloc),
564 GFP_ATOMIC);
565
566 if (!txring->alloc)
567 goto err_set_null;
568
569 /*
570 * 16 Bytes align
571 */
572 txring->desc = (void *)ALIGN((unsigned long)(txring->alloc),
573 RING_DESC_ALIGN);
574 txring->dma = ALIGN(txring->dmaalloc, RING_DESC_ALIGN);
575 txring->next_to_use = 0;
576 atomic_set(&txring->next_to_clean, 0);
577 atomic_set(&txring->nr_free, jme->tx_ring_size);
578
579 txring->bufinf = kcalloc(jme->tx_ring_size,
580 sizeof(struct jme_buffer_info),
581 GFP_ATOMIC);
582 if (unlikely(!(txring->bufinf)))
583 goto err_free_txring;
584
585 return 0;
586
587err_free_txring:
588 dma_free_coherent(&(jme->pdev->dev),
589 TX_RING_ALLOC_SIZE(jme->tx_ring_size),
590 txring->alloc,
591 txring->dmaalloc);
592
593err_set_null:
594 txring->desc = NULL;
595 txring->dmaalloc = 0;
596 txring->dma = 0;
597 txring->bufinf = NULL;
598
599 return -ENOMEM;
600}
601
602static void
603jme_free_tx_resources(struct jme_adapter *jme)
604{
605 int i;
606 struct jme_ring *txring = &(jme->txring[0]);
607 struct jme_buffer_info *txbi;
608
609 if (txring->alloc) {
610 if (txring->bufinf) {
611 for (i = 0 ; i < jme->tx_ring_size ; ++i) {
612 txbi = txring->bufinf + i;
613 if (txbi->skb) {
614 dev_kfree_skb(txbi->skb);
615 txbi->skb = NULL;
616 }
617 txbi->mapping = 0;
618 txbi->len = 0;
619 txbi->nr_desc = 0;
620 txbi->start_xmit = 0;
621 }
622 kfree(txring->bufinf);
623 }
624
625 dma_free_coherent(&(jme->pdev->dev),
626 TX_RING_ALLOC_SIZE(jme->tx_ring_size),
627 txring->alloc,
628 txring->dmaalloc);
629
630 txring->alloc = NULL;
631 txring->desc = NULL;
632 txring->dmaalloc = 0;
633 txring->dma = 0;
634 txring->bufinf = NULL;
635 }
636 txring->next_to_use = 0;
637 atomic_set(&txring->next_to_clean, 0);
638 atomic_set(&txring->nr_free, 0);
639}
640
641static inline void
642jme_enable_tx_engine(struct jme_adapter *jme)
643{
644 /*
645 * Select Queue 0
646 */
647 jwrite32(jme, JME_TXCS, TXCS_DEFAULT | TXCS_SELECT_QUEUE0);
648 wmb();
649
650 /*
651 * Setup TX Queue 0 DMA Bass Address
652 */
653 jwrite32(jme, JME_TXDBA_LO, (__u64)jme->txring[0].dma & 0xFFFFFFFFUL);
654 jwrite32(jme, JME_TXDBA_HI, (__u64)(jme->txring[0].dma) >> 32);
655 jwrite32(jme, JME_TXNDA, (__u64)jme->txring[0].dma & 0xFFFFFFFFUL);
656
657 /*
658 * Setup TX Descptor Count
659 */
660 jwrite32(jme, JME_TXQDC, jme->tx_ring_size);
661
662 /*
663 * Enable TX Engine
664 */
665 wmb();
666 jwrite32f(jme, JME_TXCS, jme->reg_txcs |
667 TXCS_SELECT_QUEUE0 |
668 TXCS_ENABLE);
669
670 /*
671 * Start clock for TX MAC Processor
672 */
673 jme_mac_txclk_on(jme);
674}
675
676static inline void
677jme_disable_tx_engine(struct jme_adapter *jme)
678{
679 int i;
680 u32 val;
681
682 /*
683 * Disable TX Engine
684 */
685 jwrite32(jme, JME_TXCS, jme->reg_txcs | TXCS_SELECT_QUEUE0);
686 wmb();
687
688 val = jread32(jme, JME_TXCS);
689 for (i = JME_TX_DISABLE_TIMEOUT ; (val & TXCS_ENABLE) && i > 0 ; --i) {
690 mdelay(1);
691 val = jread32(jme, JME_TXCS);
692 rmb();
693 }
694
695 if (!i)
696 pr_err("Disable TX engine timeout\n");
697
698 /*
699 * Stop clock for TX MAC Processor
700 */
701 jme_mac_txclk_off(jme);
702}
703
704static void
705jme_set_clean_rxdesc(struct jme_adapter *jme, int i)
706{
707 struct jme_ring *rxring = &(jme->rxring[0]);
708 register struct rxdesc *rxdesc = rxring->desc;
709 struct jme_buffer_info *rxbi = rxring->bufinf;
710 rxdesc += i;
711 rxbi += i;
712
713 rxdesc->dw[0] = 0;
714 rxdesc->dw[1] = 0;
715 rxdesc->desc1.bufaddrh = cpu_to_le32((__u64)rxbi->mapping >> 32);
716 rxdesc->desc1.bufaddrl = cpu_to_le32(
717 (__u64)rxbi->mapping & 0xFFFFFFFFUL);
718 rxdesc->desc1.datalen = cpu_to_le16(rxbi->len);
719 if (jme->dev->features & NETIF_F_HIGHDMA)
720 rxdesc->desc1.flags = RXFLAG_64BIT;
721 wmb();
722 rxdesc->desc1.flags |= RXFLAG_OWN | RXFLAG_INT;
723}
724
725static int
726jme_make_new_rx_buf(struct jme_adapter *jme, int i)
727{
728 struct jme_ring *rxring = &(jme->rxring[0]);
729 struct jme_buffer_info *rxbi = rxring->bufinf + i;
730 struct sk_buff *skb;
731 dma_addr_t mapping;
732
733 skb = netdev_alloc_skb(jme->dev,
734 jme->dev->mtu + RX_EXTRA_LEN);
735 if (unlikely(!skb))
736 return -ENOMEM;
737
738 mapping = dma_map_page(&jme->pdev->dev, virt_to_page(skb->data),
739 offset_in_page(skb->data), skb_tailroom(skb),
740 DMA_FROM_DEVICE);
741 if (unlikely(dma_mapping_error(&jme->pdev->dev, mapping))) {
742 dev_kfree_skb(skb);
743 return -ENOMEM;
744 }
745
746 if (likely(rxbi->mapping))
747 dma_unmap_page(&jme->pdev->dev, rxbi->mapping, rxbi->len,
748 DMA_FROM_DEVICE);
749
750 rxbi->skb = skb;
751 rxbi->len = skb_tailroom(skb);
752 rxbi->mapping = mapping;
753 return 0;
754}
755
756static void
757jme_free_rx_buf(struct jme_adapter *jme, int i)
758{
759 struct jme_ring *rxring = &(jme->rxring[0]);
760 struct jme_buffer_info *rxbi = rxring->bufinf;
761 rxbi += i;
762
763 if (rxbi->skb) {
764 dma_unmap_page(&jme->pdev->dev, rxbi->mapping, rxbi->len,
765 DMA_FROM_DEVICE);
766 dev_kfree_skb(rxbi->skb);
767 rxbi->skb = NULL;
768 rxbi->mapping = 0;
769 rxbi->len = 0;
770 }
771}
772
773static void
774jme_free_rx_resources(struct jme_adapter *jme)
775{
776 int i;
777 struct jme_ring *rxring = &(jme->rxring[0]);
778
779 if (rxring->alloc) {
780 if (rxring->bufinf) {
781 for (i = 0 ; i < jme->rx_ring_size ; ++i)
782 jme_free_rx_buf(jme, i);
783 kfree(rxring->bufinf);
784 }
785
786 dma_free_coherent(&(jme->pdev->dev),
787 RX_RING_ALLOC_SIZE(jme->rx_ring_size),
788 rxring->alloc,
789 rxring->dmaalloc);
790 rxring->alloc = NULL;
791 rxring->desc = NULL;
792 rxring->dmaalloc = 0;
793 rxring->dma = 0;
794 rxring->bufinf = NULL;
795 }
796 rxring->next_to_use = 0;
797 atomic_set(&rxring->next_to_clean, 0);
798}
799
800static int
801jme_setup_rx_resources(struct jme_adapter *jme)
802{
803 int i;
804 struct jme_ring *rxring = &(jme->rxring[0]);
805
806 rxring->alloc = dma_alloc_coherent(&(jme->pdev->dev),
807 RX_RING_ALLOC_SIZE(jme->rx_ring_size),
808 &(rxring->dmaalloc),
809 GFP_ATOMIC);
810 if (!rxring->alloc)
811 goto err_set_null;
812
813 /*
814 * 16 Bytes align
815 */
816 rxring->desc = (void *)ALIGN((unsigned long)(rxring->alloc),
817 RING_DESC_ALIGN);
818 rxring->dma = ALIGN(rxring->dmaalloc, RING_DESC_ALIGN);
819 rxring->next_to_use = 0;
820 atomic_set(&rxring->next_to_clean, 0);
821
822 rxring->bufinf = kcalloc(jme->rx_ring_size,
823 sizeof(struct jme_buffer_info),
824 GFP_ATOMIC);
825 if (unlikely(!(rxring->bufinf)))
826 goto err_free_rxring;
827
828 /*
829 * Initiallize Receive Descriptors
830 */
831 for (i = 0 ; i < jme->rx_ring_size ; ++i) {
832 if (unlikely(jme_make_new_rx_buf(jme, i))) {
833 jme_free_rx_resources(jme);
834 return -ENOMEM;
835 }
836
837 jme_set_clean_rxdesc(jme, i);
838 }
839
840 return 0;
841
842err_free_rxring:
843 dma_free_coherent(&(jme->pdev->dev),
844 RX_RING_ALLOC_SIZE(jme->rx_ring_size),
845 rxring->alloc,
846 rxring->dmaalloc);
847err_set_null:
848 rxring->desc = NULL;
849 rxring->dmaalloc = 0;
850 rxring->dma = 0;
851 rxring->bufinf = NULL;
852
853 return -ENOMEM;
854}
855
856static inline void
857jme_enable_rx_engine(struct jme_adapter *jme)
858{
859 /*
860 * Select Queue 0
861 */
862 jwrite32(jme, JME_RXCS, jme->reg_rxcs |
863 RXCS_QUEUESEL_Q0);
864 wmb();
865
866 /*
867 * Setup RX DMA Bass Address
868 */
869 jwrite32(jme, JME_RXDBA_LO, (__u64)(jme->rxring[0].dma) & 0xFFFFFFFFUL);
870 jwrite32(jme, JME_RXDBA_HI, (__u64)(jme->rxring[0].dma) >> 32);
871 jwrite32(jme, JME_RXNDA, (__u64)(jme->rxring[0].dma) & 0xFFFFFFFFUL);
872
873 /*
874 * Setup RX Descriptor Count
875 */
876 jwrite32(jme, JME_RXQDC, jme->rx_ring_size);
877
878 /*
879 * Setup Unicast Filter
880 */
881 jme_set_unicastaddr(jme->dev);
882 jme_set_multi(jme->dev);
883
884 /*
885 * Enable RX Engine
886 */
887 wmb();
888 jwrite32f(jme, JME_RXCS, jme->reg_rxcs |
889 RXCS_QUEUESEL_Q0 |
890 RXCS_ENABLE |
891 RXCS_QST);
892
893 /*
894 * Start clock for RX MAC Processor
895 */
896 jme_mac_rxclk_on(jme);
897}
898
899static inline void
900jme_restart_rx_engine(struct jme_adapter *jme)
901{
902 /*
903 * Start RX Engine
904 */
905 jwrite32(jme, JME_RXCS, jme->reg_rxcs |
906 RXCS_QUEUESEL_Q0 |
907 RXCS_ENABLE |
908 RXCS_QST);
909}
910
911static inline void
912jme_disable_rx_engine(struct jme_adapter *jme)
913{
914 int i;
915 u32 val;
916
917 /*
918 * Disable RX Engine
919 */
920 jwrite32(jme, JME_RXCS, jme->reg_rxcs);
921 wmb();
922
923 val = jread32(jme, JME_RXCS);
924 for (i = JME_RX_DISABLE_TIMEOUT ; (val & RXCS_ENABLE) && i > 0 ; --i) {
925 mdelay(1);
926 val = jread32(jme, JME_RXCS);
927 rmb();
928 }
929
930 if (!i)
931 pr_err("Disable RX engine timeout\n");
932
933 /*
934 * Stop clock for RX MAC Processor
935 */
936 jme_mac_rxclk_off(jme);
937}
938
939static u16
940jme_udpsum(struct sk_buff *skb)
941{
942 u16 csum = 0xFFFFu;
943
944 if (skb->len < (ETH_HLEN + sizeof(struct iphdr)))
945 return csum;
946 if (skb->protocol != htons(ETH_P_IP))
947 return csum;
948 skb_set_network_header(skb, ETH_HLEN);
949 if ((ip_hdr(skb)->protocol != IPPROTO_UDP) ||
950 (skb->len < (ETH_HLEN +
951 (ip_hdr(skb)->ihl << 2) +
952 sizeof(struct udphdr)))) {
953 skb_reset_network_header(skb);
954 return csum;
955 }
956 skb_set_transport_header(skb,
957 ETH_HLEN + (ip_hdr(skb)->ihl << 2));
958 csum = udp_hdr(skb)->check;
959 skb_reset_transport_header(skb);
960 skb_reset_network_header(skb);
961
962 return csum;
963}
964
965static int
966jme_rxsum_ok(struct jme_adapter *jme, u16 flags, struct sk_buff *skb)
967{
968 if (!(flags & (RXWBFLAG_TCPON | RXWBFLAG_UDPON | RXWBFLAG_IPV4)))
969 return false;
970
971 if (unlikely((flags & (RXWBFLAG_MF | RXWBFLAG_TCPON | RXWBFLAG_TCPCS))
972 == RXWBFLAG_TCPON)) {
973 if (flags & RXWBFLAG_IPV4)
974 netif_err(jme, rx_err, jme->dev, "TCP Checksum error\n");
975 return false;
976 }
977
978 if (unlikely((flags & (RXWBFLAG_MF | RXWBFLAG_UDPON | RXWBFLAG_UDPCS))
979 == RXWBFLAG_UDPON) && jme_udpsum(skb)) {
980 if (flags & RXWBFLAG_IPV4)
981 netif_err(jme, rx_err, jme->dev, "UDP Checksum error\n");
982 return false;
983 }
984
985 if (unlikely((flags & (RXWBFLAG_IPV4 | RXWBFLAG_IPCS))
986 == RXWBFLAG_IPV4)) {
987 netif_err(jme, rx_err, jme->dev, "IPv4 Checksum error\n");
988 return false;
989 }
990
991 return true;
992}
993
994static void
995jme_alloc_and_feed_skb(struct jme_adapter *jme, int idx)
996{
997 struct jme_ring *rxring = &(jme->rxring[0]);
998 struct rxdesc *rxdesc = rxring->desc;
999 struct jme_buffer_info *rxbi = rxring->bufinf;
1000 struct sk_buff *skb;
1001 int framesize;
1002
1003 rxdesc += idx;
1004 rxbi += idx;
1005
1006 skb = rxbi->skb;
1007 dma_sync_single_for_cpu(&jme->pdev->dev, rxbi->mapping, rxbi->len,
1008 DMA_FROM_DEVICE);
1009
1010 if (unlikely(jme_make_new_rx_buf(jme, idx))) {
1011 dma_sync_single_for_device(&jme->pdev->dev, rxbi->mapping,
1012 rxbi->len, DMA_FROM_DEVICE);
1013
1014 ++(NET_STAT(jme).rx_dropped);
1015 } else {
1016 framesize = le16_to_cpu(rxdesc->descwb.framesize)
1017 - RX_PREPAD_SIZE;
1018
1019 skb_reserve(skb, RX_PREPAD_SIZE);
1020 skb_put(skb, framesize);
1021 skb->protocol = eth_type_trans(skb, jme->dev);
1022
1023 if (jme_rxsum_ok(jme, le16_to_cpu(rxdesc->descwb.flags), skb))
1024 skb->ip_summed = CHECKSUM_UNNECESSARY;
1025 else
1026 skb_checksum_none_assert(skb);
1027
1028 if (rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_TAGON)) {
1029 u16 vid = le16_to_cpu(rxdesc->descwb.vlan);
1030
1031 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
1032 NET_STAT(jme).rx_bytes += 4;
1033 }
1034 jme->jme_rx(skb);
1035
1036 if ((rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_DEST)) ==
1037 cpu_to_le16(RXWBFLAG_DEST_MUL))
1038 ++(NET_STAT(jme).multicast);
1039
1040 NET_STAT(jme).rx_bytes += framesize;
1041 ++(NET_STAT(jme).rx_packets);
1042 }
1043
1044 jme_set_clean_rxdesc(jme, idx);
1045
1046}
1047
1048static int
1049jme_process_receive(struct jme_adapter *jme, int limit)
1050{
1051 struct jme_ring *rxring = &(jme->rxring[0]);
1052 struct rxdesc *rxdesc;
1053 int i, j, ccnt, desccnt, mask = jme->rx_ring_mask;
1054
1055 if (unlikely(!atomic_dec_and_test(&jme->rx_cleaning)))
1056 goto out_inc;
1057
1058 if (unlikely(atomic_read(&jme->link_changing) != 1))
1059 goto out_inc;
1060
1061 if (unlikely(!netif_carrier_ok(jme->dev)))
1062 goto out_inc;
1063
1064 i = atomic_read(&rxring->next_to_clean);
1065 while (limit > 0) {
1066 rxdesc = rxring->desc;
1067 rxdesc += i;
1068
1069 if ((rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_OWN)) ||
1070 !(rxdesc->descwb.desccnt & RXWBDCNT_WBCPL))
1071 goto out;
1072 --limit;
1073
1074 rmb();
1075 desccnt = rxdesc->descwb.desccnt & RXWBDCNT_DCNT;
1076
1077 if (unlikely(desccnt > 1 ||
1078 rxdesc->descwb.errstat & RXWBERR_ALLERR)) {
1079
1080 if (rxdesc->descwb.errstat & RXWBERR_CRCERR)
1081 ++(NET_STAT(jme).rx_crc_errors);
1082 else if (rxdesc->descwb.errstat & RXWBERR_OVERUN)
1083 ++(NET_STAT(jme).rx_fifo_errors);
1084 else
1085 ++(NET_STAT(jme).rx_errors);
1086
1087 if (desccnt > 1)
1088 limit -= desccnt - 1;
1089
1090 for (j = i, ccnt = desccnt ; ccnt-- ; ) {
1091 jme_set_clean_rxdesc(jme, j);
1092 j = (j + 1) & (mask);
1093 }
1094
1095 } else {
1096 jme_alloc_and_feed_skb(jme, i);
1097 }
1098
1099 i = (i + desccnt) & (mask);
1100 }
1101
1102out:
1103 atomic_set(&rxring->next_to_clean, i);
1104
1105out_inc:
1106 atomic_inc(&jme->rx_cleaning);
1107
1108 return limit > 0 ? limit : 0;
1109
1110}
1111
1112static void
1113jme_attempt_pcc(struct dynpcc_info *dpi, int atmp)
1114{
1115 if (likely(atmp == dpi->cur)) {
1116 dpi->cnt = 0;
1117 return;
1118 }
1119
1120 if (dpi->attempt == atmp) {
1121 ++(dpi->cnt);
1122 } else {
1123 dpi->attempt = atmp;
1124 dpi->cnt = 0;
1125 }
1126
1127}
1128
1129static void
1130jme_dynamic_pcc(struct jme_adapter *jme)
1131{
1132 register struct dynpcc_info *dpi = &(jme->dpi);
1133
1134 if ((NET_STAT(jme).rx_bytes - dpi->last_bytes) > PCC_P3_THRESHOLD)
1135 jme_attempt_pcc(dpi, PCC_P3);
1136 else if ((NET_STAT(jme).rx_packets - dpi->last_pkts) > PCC_P2_THRESHOLD ||
1137 dpi->intr_cnt > PCC_INTR_THRESHOLD)
1138 jme_attempt_pcc(dpi, PCC_P2);
1139 else
1140 jme_attempt_pcc(dpi, PCC_P1);
1141
1142 if (unlikely(dpi->attempt != dpi->cur && dpi->cnt > 5)) {
1143 if (dpi->attempt < dpi->cur)
1144 tasklet_schedule(&jme->rxclean_task);
1145 jme_set_rx_pcc(jme, dpi->attempt);
1146 dpi->cur = dpi->attempt;
1147 dpi->cnt = 0;
1148 }
1149}
1150
1151static void
1152jme_start_pcc_timer(struct jme_adapter *jme)
1153{
1154 struct dynpcc_info *dpi = &(jme->dpi);
1155 dpi->last_bytes = NET_STAT(jme).rx_bytes;
1156 dpi->last_pkts = NET_STAT(jme).rx_packets;
1157 dpi->intr_cnt = 0;
1158 jwrite32(jme, JME_TMCSR,
1159 TMCSR_EN | ((0xFFFFFF - PCC_INTERVAL_US) & TMCSR_CNT));
1160}
1161
1162static inline void
1163jme_stop_pcc_timer(struct jme_adapter *jme)
1164{
1165 jwrite32(jme, JME_TMCSR, 0);
1166}
1167
1168static void
1169jme_shutdown_nic(struct jme_adapter *jme)
1170{
1171 u32 phylink;
1172
1173 phylink = jme_linkstat_from_phy(jme);
1174
1175 if (!(phylink & PHY_LINK_UP)) {
1176 /*
1177 * Disable all interrupt before issue timer
1178 */
1179 jme_stop_irq(jme);
1180 jwrite32(jme, JME_TIMER2, TMCSR_EN | 0xFFFFFE);
1181 }
1182}
1183
1184static void
1185jme_pcc_tasklet(struct tasklet_struct *t)
1186{
1187 struct jme_adapter *jme = from_tasklet(jme, t, pcc_task);
1188 struct net_device *netdev = jme->dev;
1189
1190 if (unlikely(test_bit(JME_FLAG_SHUTDOWN, &jme->flags))) {
1191 jme_shutdown_nic(jme);
1192 return;
1193 }
1194
1195 if (unlikely(!netif_carrier_ok(netdev) ||
1196 (atomic_read(&jme->link_changing) != 1)
1197 )) {
1198 jme_stop_pcc_timer(jme);
1199 return;
1200 }
1201
1202 if (!(test_bit(JME_FLAG_POLL, &jme->flags)))
1203 jme_dynamic_pcc(jme);
1204
1205 jme_start_pcc_timer(jme);
1206}
1207
1208static inline void
1209jme_polling_mode(struct jme_adapter *jme)
1210{
1211 jme_set_rx_pcc(jme, PCC_OFF);
1212}
1213
1214static inline void
1215jme_interrupt_mode(struct jme_adapter *jme)
1216{
1217 jme_set_rx_pcc(jme, PCC_P1);
1218}
1219
1220static inline int
1221jme_pseudo_hotplug_enabled(struct jme_adapter *jme)
1222{
1223 u32 apmc;
1224 apmc = jread32(jme, JME_APMC);
1225 return apmc & JME_APMC_PSEUDO_HP_EN;
1226}
1227
1228static void
1229jme_start_shutdown_timer(struct jme_adapter *jme)
1230{
1231 u32 apmc;
1232
1233 apmc = jread32(jme, JME_APMC) | JME_APMC_PCIE_SD_EN;
1234 apmc &= ~JME_APMC_EPIEN_CTRL;
1235 if (!no_extplug) {
1236 jwrite32f(jme, JME_APMC, apmc | JME_APMC_EPIEN_CTRL_EN);
1237 wmb();
1238 }
1239 jwrite32f(jme, JME_APMC, apmc);
1240
1241 jwrite32f(jme, JME_TIMER2, 0);
1242 set_bit(JME_FLAG_SHUTDOWN, &jme->flags);
1243 jwrite32(jme, JME_TMCSR,
1244 TMCSR_EN | ((0xFFFFFF - APMC_PHP_SHUTDOWN_DELAY) & TMCSR_CNT));
1245}
1246
1247static void
1248jme_stop_shutdown_timer(struct jme_adapter *jme)
1249{
1250 u32 apmc;
1251
1252 jwrite32f(jme, JME_TMCSR, 0);
1253 jwrite32f(jme, JME_TIMER2, 0);
1254 clear_bit(JME_FLAG_SHUTDOWN, &jme->flags);
1255
1256 apmc = jread32(jme, JME_APMC);
1257 apmc &= ~(JME_APMC_PCIE_SD_EN | JME_APMC_EPIEN_CTRL);
1258 jwrite32f(jme, JME_APMC, apmc | JME_APMC_EPIEN_CTRL_DIS);
1259 wmb();
1260 jwrite32f(jme, JME_APMC, apmc);
1261}
1262
1263static void jme_link_change_work(struct work_struct *work)
1264{
1265 struct jme_adapter *jme = container_of(work, struct jme_adapter, linkch_task);
1266 struct net_device *netdev = jme->dev;
1267 int rc;
1268
1269 while (!atomic_dec_and_test(&jme->link_changing)) {
1270 atomic_inc(&jme->link_changing);
1271 netif_info(jme, intr, jme->dev, "Get link change lock failed\n");
1272 while (atomic_read(&jme->link_changing) != 1)
1273 netif_info(jme, intr, jme->dev, "Waiting link change lock\n");
1274 }
1275
1276 if (jme_check_link(netdev, 1) && jme->old_mtu == netdev->mtu)
1277 goto out;
1278
1279 jme->old_mtu = netdev->mtu;
1280 netif_stop_queue(netdev);
1281 if (jme_pseudo_hotplug_enabled(jme))
1282 jme_stop_shutdown_timer(jme);
1283
1284 jme_stop_pcc_timer(jme);
1285 tasklet_disable(&jme->txclean_task);
1286 tasklet_disable(&jme->rxclean_task);
1287 tasklet_disable(&jme->rxempty_task);
1288
1289 if (netif_carrier_ok(netdev)) {
1290 jme_disable_rx_engine(jme);
1291 jme_disable_tx_engine(jme);
1292 jme_reset_mac_processor(jme);
1293 jme_free_rx_resources(jme);
1294 jme_free_tx_resources(jme);
1295
1296 if (test_bit(JME_FLAG_POLL, &jme->flags))
1297 jme_polling_mode(jme);
1298
1299 netif_carrier_off(netdev);
1300 }
1301
1302 jme_check_link(netdev, 0);
1303 if (netif_carrier_ok(netdev)) {
1304 rc = jme_setup_rx_resources(jme);
1305 if (rc) {
1306 pr_err("Allocating resources for RX error, Device STOPPED!\n");
1307 goto out_enable_tasklet;
1308 }
1309
1310 rc = jme_setup_tx_resources(jme);
1311 if (rc) {
1312 pr_err("Allocating resources for TX error, Device STOPPED!\n");
1313 goto err_out_free_rx_resources;
1314 }
1315
1316 jme_enable_rx_engine(jme);
1317 jme_enable_tx_engine(jme);
1318
1319 netif_start_queue(netdev);
1320
1321 if (test_bit(JME_FLAG_POLL, &jme->flags))
1322 jme_interrupt_mode(jme);
1323
1324 jme_start_pcc_timer(jme);
1325 } else if (jme_pseudo_hotplug_enabled(jme)) {
1326 jme_start_shutdown_timer(jme);
1327 }
1328
1329 goto out_enable_tasklet;
1330
1331err_out_free_rx_resources:
1332 jme_free_rx_resources(jme);
1333out_enable_tasklet:
1334 tasklet_enable(&jme->txclean_task);
1335 tasklet_enable(&jme->rxclean_task);
1336 tasklet_enable(&jme->rxempty_task);
1337out:
1338 atomic_inc(&jme->link_changing);
1339}
1340
1341static void
1342jme_rx_clean_tasklet(struct tasklet_struct *t)
1343{
1344 struct jme_adapter *jme = from_tasklet(jme, t, rxclean_task);
1345 struct dynpcc_info *dpi = &(jme->dpi);
1346
1347 jme_process_receive(jme, jme->rx_ring_size);
1348 ++(dpi->intr_cnt);
1349
1350}
1351
1352static int
1353jme_poll(JME_NAPI_HOLDER(holder), JME_NAPI_WEIGHT(budget))
1354{
1355 struct jme_adapter *jme = jme_napi_priv(holder);
1356 int rest;
1357
1358 rest = jme_process_receive(jme, JME_NAPI_WEIGHT_VAL(budget));
1359
1360 while (atomic_read(&jme->rx_empty) > 0) {
1361 atomic_dec(&jme->rx_empty);
1362 ++(NET_STAT(jme).rx_dropped);
1363 jme_restart_rx_engine(jme);
1364 }
1365 atomic_inc(&jme->rx_empty);
1366
1367 if (rest) {
1368 JME_RX_COMPLETE(netdev, holder);
1369 jme_interrupt_mode(jme);
1370 }
1371
1372 JME_NAPI_WEIGHT_SET(budget, rest);
1373 return JME_NAPI_WEIGHT_VAL(budget) - rest;
1374}
1375
1376static void
1377jme_rx_empty_tasklet(struct tasklet_struct *t)
1378{
1379 struct jme_adapter *jme = from_tasklet(jme, t, rxempty_task);
1380
1381 if (unlikely(atomic_read(&jme->link_changing) != 1))
1382 return;
1383
1384 if (unlikely(!netif_carrier_ok(jme->dev)))
1385 return;
1386
1387 netif_info(jme, rx_status, jme->dev, "RX Queue Full!\n");
1388
1389 jme_rx_clean_tasklet(&jme->rxclean_task);
1390
1391 while (atomic_read(&jme->rx_empty) > 0) {
1392 atomic_dec(&jme->rx_empty);
1393 ++(NET_STAT(jme).rx_dropped);
1394 jme_restart_rx_engine(jme);
1395 }
1396 atomic_inc(&jme->rx_empty);
1397}
1398
1399static void
1400jme_wake_queue_if_stopped(struct jme_adapter *jme)
1401{
1402 struct jme_ring *txring = &(jme->txring[0]);
1403
1404 smp_wmb();
1405 if (unlikely(netif_queue_stopped(jme->dev) &&
1406 atomic_read(&txring->nr_free) >= (jme->tx_wake_threshold))) {
1407 netif_info(jme, tx_done, jme->dev, "TX Queue Waked\n");
1408 netif_wake_queue(jme->dev);
1409 }
1410
1411}
1412
1413static void jme_tx_clean_tasklet(struct tasklet_struct *t)
1414{
1415 struct jme_adapter *jme = from_tasklet(jme, t, txclean_task);
1416 struct jme_ring *txring = &(jme->txring[0]);
1417 struct txdesc *txdesc = txring->desc;
1418 struct jme_buffer_info *txbi = txring->bufinf, *ctxbi, *ttxbi;
1419 int i, j, cnt = 0, max, err, mask;
1420
1421 tx_dbg(jme, "Into txclean\n");
1422
1423 if (unlikely(!atomic_dec_and_test(&jme->tx_cleaning)))
1424 goto out;
1425
1426 if (unlikely(atomic_read(&jme->link_changing) != 1))
1427 goto out;
1428
1429 if (unlikely(!netif_carrier_ok(jme->dev)))
1430 goto out;
1431
1432 max = jme->tx_ring_size - atomic_read(&txring->nr_free);
1433 mask = jme->tx_ring_mask;
1434
1435 for (i = atomic_read(&txring->next_to_clean) ; cnt < max ; ) {
1436
1437 ctxbi = txbi + i;
1438
1439 if (likely(ctxbi->skb &&
1440 !(txdesc[i].descwb.flags & TXWBFLAG_OWN))) {
1441
1442 tx_dbg(jme, "txclean: %d+%d@%lu\n",
1443 i, ctxbi->nr_desc, jiffies);
1444
1445 err = txdesc[i].descwb.flags & TXWBFLAG_ALLERR;
1446
1447 for (j = 1 ; j < ctxbi->nr_desc ; ++j) {
1448 ttxbi = txbi + ((i + j) & (mask));
1449 txdesc[(i + j) & (mask)].dw[0] = 0;
1450
1451 dma_unmap_page(&jme->pdev->dev,
1452 ttxbi->mapping, ttxbi->len,
1453 DMA_TO_DEVICE);
1454
1455 ttxbi->mapping = 0;
1456 ttxbi->len = 0;
1457 }
1458
1459 dev_kfree_skb(ctxbi->skb);
1460
1461 cnt += ctxbi->nr_desc;
1462
1463 if (unlikely(err)) {
1464 ++(NET_STAT(jme).tx_carrier_errors);
1465 } else {
1466 ++(NET_STAT(jme).tx_packets);
1467 NET_STAT(jme).tx_bytes += ctxbi->len;
1468 }
1469
1470 ctxbi->skb = NULL;
1471 ctxbi->len = 0;
1472 ctxbi->start_xmit = 0;
1473
1474 } else {
1475 break;
1476 }
1477
1478 i = (i + ctxbi->nr_desc) & mask;
1479
1480 ctxbi->nr_desc = 0;
1481 }
1482
1483 tx_dbg(jme, "txclean: done %d@%lu\n", i, jiffies);
1484 atomic_set(&txring->next_to_clean, i);
1485 atomic_add(cnt, &txring->nr_free);
1486
1487 jme_wake_queue_if_stopped(jme);
1488
1489out:
1490 atomic_inc(&jme->tx_cleaning);
1491}
1492
1493static void
1494jme_intr_msi(struct jme_adapter *jme, u32 intrstat)
1495{
1496 /*
1497 * Disable interrupt
1498 */
1499 jwrite32f(jme, JME_IENC, INTR_ENABLE);
1500
1501 if (intrstat & (INTR_LINKCH | INTR_SWINTR)) {
1502 /*
1503 * Link change event is critical
1504 * all other events are ignored
1505 */
1506 jwrite32(jme, JME_IEVE, intrstat);
1507 schedule_work(&jme->linkch_task);
1508 goto out_reenable;
1509 }
1510
1511 if (intrstat & INTR_TMINTR) {
1512 jwrite32(jme, JME_IEVE, INTR_TMINTR);
1513 tasklet_schedule(&jme->pcc_task);
1514 }
1515
1516 if (intrstat & (INTR_PCCTXTO | INTR_PCCTX)) {
1517 jwrite32(jme, JME_IEVE, INTR_PCCTXTO | INTR_PCCTX | INTR_TX0);
1518 tasklet_schedule(&jme->txclean_task);
1519 }
1520
1521 if ((intrstat & (INTR_PCCRX0TO | INTR_PCCRX0 | INTR_RX0EMP))) {
1522 jwrite32(jme, JME_IEVE, (intrstat & (INTR_PCCRX0TO |
1523 INTR_PCCRX0 |
1524 INTR_RX0EMP)) |
1525 INTR_RX0);
1526 }
1527
1528 if (test_bit(JME_FLAG_POLL, &jme->flags)) {
1529 if (intrstat & INTR_RX0EMP)
1530 atomic_inc(&jme->rx_empty);
1531
1532 if ((intrstat & (INTR_PCCRX0TO | INTR_PCCRX0 | INTR_RX0EMP))) {
1533 if (likely(JME_RX_SCHEDULE_PREP(jme))) {
1534 jme_polling_mode(jme);
1535 JME_RX_SCHEDULE(jme);
1536 }
1537 }
1538 } else {
1539 if (intrstat & INTR_RX0EMP) {
1540 atomic_inc(&jme->rx_empty);
1541 tasklet_hi_schedule(&jme->rxempty_task);
1542 } else if (intrstat & (INTR_PCCRX0TO | INTR_PCCRX0)) {
1543 tasklet_hi_schedule(&jme->rxclean_task);
1544 }
1545 }
1546
1547out_reenable:
1548 /*
1549 * Re-enable interrupt
1550 */
1551 jwrite32f(jme, JME_IENS, INTR_ENABLE);
1552}
1553
1554static irqreturn_t
1555jme_intr(int irq, void *dev_id)
1556{
1557 struct net_device *netdev = dev_id;
1558 struct jme_adapter *jme = netdev_priv(netdev);
1559 u32 intrstat;
1560
1561 intrstat = jread32(jme, JME_IEVE);
1562
1563 /*
1564 * Check if it's really an interrupt for us
1565 */
1566 if (unlikely((intrstat & INTR_ENABLE) == 0))
1567 return IRQ_NONE;
1568
1569 /*
1570 * Check if the device still exist
1571 */
1572 if (unlikely(intrstat == ~((typeof(intrstat))0)))
1573 return IRQ_NONE;
1574
1575 jme_intr_msi(jme, intrstat);
1576
1577 return IRQ_HANDLED;
1578}
1579
1580static irqreturn_t
1581jme_msi(int irq, void *dev_id)
1582{
1583 struct net_device *netdev = dev_id;
1584 struct jme_adapter *jme = netdev_priv(netdev);
1585 u32 intrstat;
1586
1587 intrstat = jread32(jme, JME_IEVE);
1588
1589 jme_intr_msi(jme, intrstat);
1590
1591 return IRQ_HANDLED;
1592}
1593
1594static void
1595jme_reset_link(struct jme_adapter *jme)
1596{
1597 jwrite32(jme, JME_TMCSR, TMCSR_SWIT);
1598}
1599
1600static void
1601jme_restart_an(struct jme_adapter *jme)
1602{
1603 u32 bmcr;
1604
1605 spin_lock_bh(&jme->phy_lock);
1606 bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1607 bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
1608 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr);
1609 spin_unlock_bh(&jme->phy_lock);
1610}
1611
1612static int
1613jme_request_irq(struct jme_adapter *jme)
1614{
1615 int rc;
1616 struct net_device *netdev = jme->dev;
1617 irq_handler_t handler = jme_intr;
1618 int irq_flags = IRQF_SHARED;
1619
1620 if (!pci_enable_msi(jme->pdev)) {
1621 set_bit(JME_FLAG_MSI, &jme->flags);
1622 handler = jme_msi;
1623 irq_flags = 0;
1624 }
1625
1626 rc = request_irq(jme->pdev->irq, handler, irq_flags, netdev->name,
1627 netdev);
1628 if (rc) {
1629 netdev_err(netdev,
1630 "Unable to request %s interrupt (return: %d)\n",
1631 test_bit(JME_FLAG_MSI, &jme->flags) ? "MSI" : "INTx",
1632 rc);
1633
1634 if (test_bit(JME_FLAG_MSI, &jme->flags)) {
1635 pci_disable_msi(jme->pdev);
1636 clear_bit(JME_FLAG_MSI, &jme->flags);
1637 }
1638 } else {
1639 netdev->irq = jme->pdev->irq;
1640 }
1641
1642 return rc;
1643}
1644
1645static void
1646jme_free_irq(struct jme_adapter *jme)
1647{
1648 free_irq(jme->pdev->irq, jme->dev);
1649 if (test_bit(JME_FLAG_MSI, &jme->flags)) {
1650 pci_disable_msi(jme->pdev);
1651 clear_bit(JME_FLAG_MSI, &jme->flags);
1652 jme->dev->irq = jme->pdev->irq;
1653 }
1654}
1655
1656static inline void
1657jme_new_phy_on(struct jme_adapter *jme)
1658{
1659 u32 reg;
1660
1661 reg = jread32(jme, JME_PHY_PWR);
1662 reg &= ~(PHY_PWR_DWN1SEL | PHY_PWR_DWN1SW |
1663 PHY_PWR_DWN2 | PHY_PWR_CLKSEL);
1664 jwrite32(jme, JME_PHY_PWR, reg);
1665
1666 pci_read_config_dword(jme->pdev, PCI_PRIV_PE1, ®);
1667 reg &= ~PE1_GPREG0_PBG;
1668 reg |= PE1_GPREG0_ENBG;
1669 pci_write_config_dword(jme->pdev, PCI_PRIV_PE1, reg);
1670}
1671
1672static inline void
1673jme_new_phy_off(struct jme_adapter *jme)
1674{
1675 u32 reg;
1676
1677 reg = jread32(jme, JME_PHY_PWR);
1678 reg |= PHY_PWR_DWN1SEL | PHY_PWR_DWN1SW |
1679 PHY_PWR_DWN2 | PHY_PWR_CLKSEL;
1680 jwrite32(jme, JME_PHY_PWR, reg);
1681
1682 pci_read_config_dword(jme->pdev, PCI_PRIV_PE1, ®);
1683 reg &= ~PE1_GPREG0_PBG;
1684 reg |= PE1_GPREG0_PDD3COLD;
1685 pci_write_config_dword(jme->pdev, PCI_PRIV_PE1, reg);
1686}
1687
1688static inline void
1689jme_phy_on(struct jme_adapter *jme)
1690{
1691 u32 bmcr;
1692
1693 bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1694 bmcr &= ~BMCR_PDOWN;
1695 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr);
1696
1697 if (new_phy_power_ctrl(jme->chip_main_rev))
1698 jme_new_phy_on(jme);
1699}
1700
1701static inline void
1702jme_phy_off(struct jme_adapter *jme)
1703{
1704 u32 bmcr;
1705
1706 bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1707 bmcr |= BMCR_PDOWN;
1708 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr);
1709
1710 if (new_phy_power_ctrl(jme->chip_main_rev))
1711 jme_new_phy_off(jme);
1712}
1713
1714static int
1715jme_phy_specreg_read(struct jme_adapter *jme, u32 specreg)
1716{
1717 u32 phy_addr;
1718
1719 phy_addr = JM_PHY_SPEC_REG_READ | specreg;
1720 jme_mdio_write(jme->dev, jme->mii_if.phy_id, JM_PHY_SPEC_ADDR_REG,
1721 phy_addr);
1722 return jme_mdio_read(jme->dev, jme->mii_if.phy_id,
1723 JM_PHY_SPEC_DATA_REG);
1724}
1725
1726static void
1727jme_phy_specreg_write(struct jme_adapter *jme, u32 ext_reg, u32 phy_data)
1728{
1729 u32 phy_addr;
1730
1731 phy_addr = JM_PHY_SPEC_REG_WRITE | ext_reg;
1732 jme_mdio_write(jme->dev, jme->mii_if.phy_id, JM_PHY_SPEC_DATA_REG,
1733 phy_data);
1734 jme_mdio_write(jme->dev, jme->mii_if.phy_id, JM_PHY_SPEC_ADDR_REG,
1735 phy_addr);
1736}
1737
1738static int
1739jme_phy_calibration(struct jme_adapter *jme)
1740{
1741 u32 ctrl1000, phy_data;
1742
1743 jme_phy_off(jme);
1744 jme_phy_on(jme);
1745 /* Enabel PHY test mode 1 */
1746 ctrl1000 = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_CTRL1000);
1747 ctrl1000 &= ~PHY_GAD_TEST_MODE_MSK;
1748 ctrl1000 |= PHY_GAD_TEST_MODE_1;
1749 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_CTRL1000, ctrl1000);
1750
1751 phy_data = jme_phy_specreg_read(jme, JM_PHY_EXT_COMM_2_REG);
1752 phy_data &= ~JM_PHY_EXT_COMM_2_CALI_MODE_0;
1753 phy_data |= JM_PHY_EXT_COMM_2_CALI_LATCH |
1754 JM_PHY_EXT_COMM_2_CALI_ENABLE;
1755 jme_phy_specreg_write(jme, JM_PHY_EXT_COMM_2_REG, phy_data);
1756 msleep(20);
1757 phy_data = jme_phy_specreg_read(jme, JM_PHY_EXT_COMM_2_REG);
1758 phy_data &= ~(JM_PHY_EXT_COMM_2_CALI_ENABLE |
1759 JM_PHY_EXT_COMM_2_CALI_MODE_0 |
1760 JM_PHY_EXT_COMM_2_CALI_LATCH);
1761 jme_phy_specreg_write(jme, JM_PHY_EXT_COMM_2_REG, phy_data);
1762
1763 /* Disable PHY test mode */
1764 ctrl1000 = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_CTRL1000);
1765 ctrl1000 &= ~PHY_GAD_TEST_MODE_MSK;
1766 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_CTRL1000, ctrl1000);
1767 return 0;
1768}
1769
1770static int
1771jme_phy_setEA(struct jme_adapter *jme)
1772{
1773 u32 phy_comm0 = 0, phy_comm1 = 0;
1774 u8 nic_ctrl;
1775
1776 pci_read_config_byte(jme->pdev, PCI_PRIV_SHARE_NICCTRL, &nic_ctrl);
1777 if ((nic_ctrl & 0x3) == JME_FLAG_PHYEA_ENABLE)
1778 return 0;
1779
1780 switch (jme->pdev->device) {
1781 case PCI_DEVICE_ID_JMICRON_JMC250:
1782 if (((jme->chip_main_rev == 5) &&
1783 ((jme->chip_sub_rev == 0) || (jme->chip_sub_rev == 1) ||
1784 (jme->chip_sub_rev == 3))) ||
1785 (jme->chip_main_rev >= 6)) {
1786 phy_comm0 = 0x008A;
1787 phy_comm1 = 0x4109;
1788 }
1789 if ((jme->chip_main_rev == 3) &&
1790 ((jme->chip_sub_rev == 1) || (jme->chip_sub_rev == 2)))
1791 phy_comm0 = 0xE088;
1792 break;
1793 case PCI_DEVICE_ID_JMICRON_JMC260:
1794 if (((jme->chip_main_rev == 5) &&
1795 ((jme->chip_sub_rev == 0) || (jme->chip_sub_rev == 1) ||
1796 (jme->chip_sub_rev == 3))) ||
1797 (jme->chip_main_rev >= 6)) {
1798 phy_comm0 = 0x008A;
1799 phy_comm1 = 0x4109;
1800 }
1801 if ((jme->chip_main_rev == 3) &&
1802 ((jme->chip_sub_rev == 1) || (jme->chip_sub_rev == 2)))
1803 phy_comm0 = 0xE088;
1804 if ((jme->chip_main_rev == 2) && (jme->chip_sub_rev == 0))
1805 phy_comm0 = 0x608A;
1806 if ((jme->chip_main_rev == 2) && (jme->chip_sub_rev == 2))
1807 phy_comm0 = 0x408A;
1808 break;
1809 default:
1810 return -ENODEV;
1811 }
1812 if (phy_comm0)
1813 jme_phy_specreg_write(jme, JM_PHY_EXT_COMM_0_REG, phy_comm0);
1814 if (phy_comm1)
1815 jme_phy_specreg_write(jme, JM_PHY_EXT_COMM_1_REG, phy_comm1);
1816
1817 return 0;
1818}
1819
1820static int
1821jme_open(struct net_device *netdev)
1822{
1823 struct jme_adapter *jme = netdev_priv(netdev);
1824 int rc;
1825
1826 jme_clear_pm_disable_wol(jme);
1827 JME_NAPI_ENABLE(jme);
1828
1829 tasklet_setup(&jme->txclean_task, jme_tx_clean_tasklet);
1830 tasklet_setup(&jme->rxclean_task, jme_rx_clean_tasklet);
1831 tasklet_setup(&jme->rxempty_task, jme_rx_empty_tasklet);
1832
1833 rc = jme_request_irq(jme);
1834 if (rc)
1835 goto err_out;
1836
1837 jme_start_irq(jme);
1838
1839 jme_phy_on(jme);
1840 if (test_bit(JME_FLAG_SSET, &jme->flags))
1841 jme_set_link_ksettings(netdev, &jme->old_cmd);
1842 else
1843 jme_reset_phy_processor(jme);
1844 jme_phy_calibration(jme);
1845 jme_phy_setEA(jme);
1846 jme_reset_link(jme);
1847
1848 return 0;
1849
1850err_out:
1851 netif_stop_queue(netdev);
1852 netif_carrier_off(netdev);
1853 return rc;
1854}
1855
1856static void
1857jme_set_100m_half(struct jme_adapter *jme)
1858{
1859 u32 bmcr, tmp;
1860
1861 jme_phy_on(jme);
1862 bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1863 tmp = bmcr & ~(BMCR_ANENABLE | BMCR_SPEED100 |
1864 BMCR_SPEED1000 | BMCR_FULLDPLX);
1865 tmp |= BMCR_SPEED100;
1866
1867 if (bmcr != tmp)
1868 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, tmp);
1869
1870 if (jme->fpgaver)
1871 jwrite32(jme, JME_GHC, GHC_SPEED_100M | GHC_LINK_POLL);
1872 else
1873 jwrite32(jme, JME_GHC, GHC_SPEED_100M);
1874}
1875
1876#define JME_WAIT_LINK_TIME 2000 /* 2000ms */
1877static void
1878jme_wait_link(struct jme_adapter *jme)
1879{
1880 u32 phylink, to = JME_WAIT_LINK_TIME;
1881
1882 msleep(1000);
1883 phylink = jme_linkstat_from_phy(jme);
1884 while (!(phylink & PHY_LINK_UP) && (to -= 10) > 0) {
1885 usleep_range(10000, 11000);
1886 phylink = jme_linkstat_from_phy(jme);
1887 }
1888}
1889
1890static void
1891jme_powersave_phy(struct jme_adapter *jme)
1892{
1893 if (jme->reg_pmcs && device_may_wakeup(&jme->pdev->dev)) {
1894 jme_set_100m_half(jme);
1895 if (jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN))
1896 jme_wait_link(jme);
1897 jme_clear_pm_enable_wol(jme);
1898 } else {
1899 jme_phy_off(jme);
1900 }
1901}
1902
1903static int
1904jme_close(struct net_device *netdev)
1905{
1906 struct jme_adapter *jme = netdev_priv(netdev);
1907
1908 netif_stop_queue(netdev);
1909 netif_carrier_off(netdev);
1910
1911 jme_stop_irq(jme);
1912 jme_free_irq(jme);
1913
1914 JME_NAPI_DISABLE(jme);
1915
1916 cancel_work_sync(&jme->linkch_task);
1917 tasklet_kill(&jme->txclean_task);
1918 tasklet_kill(&jme->rxclean_task);
1919 tasklet_kill(&jme->rxempty_task);
1920
1921 jme_disable_rx_engine(jme);
1922 jme_disable_tx_engine(jme);
1923 jme_reset_mac_processor(jme);
1924 jme_free_rx_resources(jme);
1925 jme_free_tx_resources(jme);
1926 jme->phylink = 0;
1927 jme_phy_off(jme);
1928
1929 return 0;
1930}
1931
1932static int
1933jme_alloc_txdesc(struct jme_adapter *jme,
1934 struct sk_buff *skb)
1935{
1936 struct jme_ring *txring = &(jme->txring[0]);
1937 int idx, nr_alloc, mask = jme->tx_ring_mask;
1938
1939 idx = txring->next_to_use;
1940 nr_alloc = skb_shinfo(skb)->nr_frags + 2;
1941
1942 if (unlikely(atomic_read(&txring->nr_free) < nr_alloc))
1943 return -1;
1944
1945 atomic_sub(nr_alloc, &txring->nr_free);
1946
1947 txring->next_to_use = (txring->next_to_use + nr_alloc) & mask;
1948
1949 return idx;
1950}
1951
1952static int
1953jme_fill_tx_map(struct pci_dev *pdev,
1954 struct txdesc *txdesc,
1955 struct jme_buffer_info *txbi,
1956 struct page *page,
1957 u32 page_offset,
1958 u32 len,
1959 bool hidma)
1960{
1961 dma_addr_t dmaaddr;
1962
1963 dmaaddr = dma_map_page(&pdev->dev, page, page_offset, len,
1964 DMA_TO_DEVICE);
1965
1966 if (unlikely(dma_mapping_error(&pdev->dev, dmaaddr)))
1967 return -EINVAL;
1968
1969 dma_sync_single_for_device(&pdev->dev, dmaaddr, len, DMA_TO_DEVICE);
1970
1971 txdesc->dw[0] = 0;
1972 txdesc->dw[1] = 0;
1973 txdesc->desc2.flags = TXFLAG_OWN;
1974 txdesc->desc2.flags |= (hidma) ? TXFLAG_64BIT : 0;
1975 txdesc->desc2.datalen = cpu_to_le16(len);
1976 txdesc->desc2.bufaddrh = cpu_to_le32((__u64)dmaaddr >> 32);
1977 txdesc->desc2.bufaddrl = cpu_to_le32(
1978 (__u64)dmaaddr & 0xFFFFFFFFUL);
1979
1980 txbi->mapping = dmaaddr;
1981 txbi->len = len;
1982 return 0;
1983}
1984
1985static void jme_drop_tx_map(struct jme_adapter *jme, int startidx, int count)
1986{
1987 struct jme_ring *txring = &(jme->txring[0]);
1988 struct jme_buffer_info *txbi = txring->bufinf, *ctxbi;
1989 int mask = jme->tx_ring_mask;
1990 int j;
1991
1992 for (j = 0 ; j < count ; j++) {
1993 ctxbi = txbi + ((startidx + j + 2) & (mask));
1994 dma_unmap_page(&jme->pdev->dev, ctxbi->mapping, ctxbi->len,
1995 DMA_TO_DEVICE);
1996
1997 ctxbi->mapping = 0;
1998 ctxbi->len = 0;
1999 }
2000}
2001
2002static int
2003jme_map_tx_skb(struct jme_adapter *jme, struct sk_buff *skb, int idx)
2004{
2005 struct jme_ring *txring = &(jme->txring[0]);
2006 struct txdesc *txdesc = txring->desc, *ctxdesc;
2007 struct jme_buffer_info *txbi = txring->bufinf, *ctxbi;
2008 bool hidma = jme->dev->features & NETIF_F_HIGHDMA;
2009 int i, nr_frags = skb_shinfo(skb)->nr_frags;
2010 int mask = jme->tx_ring_mask;
2011 u32 len;
2012 int ret = 0;
2013
2014 for (i = 0 ; i < nr_frags ; ++i) {
2015 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2016
2017 ctxdesc = txdesc + ((idx + i + 2) & (mask));
2018 ctxbi = txbi + ((idx + i + 2) & (mask));
2019
2020 ret = jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi,
2021 skb_frag_page(frag), skb_frag_off(frag),
2022 skb_frag_size(frag), hidma);
2023 if (ret) {
2024 jme_drop_tx_map(jme, idx, i);
2025 goto out;
2026 }
2027 }
2028
2029 len = skb_is_nonlinear(skb) ? skb_headlen(skb) : skb->len;
2030 ctxdesc = txdesc + ((idx + 1) & (mask));
2031 ctxbi = txbi + ((idx + 1) & (mask));
2032 ret = jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi, virt_to_page(skb->data),
2033 offset_in_page(skb->data), len, hidma);
2034 if (ret)
2035 jme_drop_tx_map(jme, idx, i);
2036
2037out:
2038 return ret;
2039
2040}
2041
2042
2043static int
2044jme_tx_tso(struct sk_buff *skb, __le16 *mss, u8 *flags)
2045{
2046 *mss = cpu_to_le16(skb_shinfo(skb)->gso_size << TXDESC_MSS_SHIFT);
2047 if (*mss) {
2048 *flags |= TXFLAG_LSEN;
2049
2050 if (skb->protocol == htons(ETH_P_IP)) {
2051 struct iphdr *iph = ip_hdr(skb);
2052
2053 iph->check = 0;
2054 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
2055 iph->daddr, 0,
2056 IPPROTO_TCP,
2057 0);
2058 } else {
2059 tcp_v6_gso_csum_prep(skb);
2060 }
2061
2062 return 0;
2063 }
2064
2065 return 1;
2066}
2067
2068static void
2069jme_tx_csum(struct jme_adapter *jme, struct sk_buff *skb, u8 *flags)
2070{
2071 if (skb->ip_summed == CHECKSUM_PARTIAL) {
2072 u8 ip_proto;
2073
2074 switch (skb->protocol) {
2075 case htons(ETH_P_IP):
2076 ip_proto = ip_hdr(skb)->protocol;
2077 break;
2078 case htons(ETH_P_IPV6):
2079 ip_proto = ipv6_hdr(skb)->nexthdr;
2080 break;
2081 default:
2082 ip_proto = 0;
2083 break;
2084 }
2085
2086 switch (ip_proto) {
2087 case IPPROTO_TCP:
2088 *flags |= TXFLAG_TCPCS;
2089 break;
2090 case IPPROTO_UDP:
2091 *flags |= TXFLAG_UDPCS;
2092 break;
2093 default:
2094 netif_err(jme, tx_err, jme->dev, "Error upper layer protocol\n");
2095 break;
2096 }
2097 }
2098}
2099
2100static inline void
2101jme_tx_vlan(struct sk_buff *skb, __le16 *vlan, u8 *flags)
2102{
2103 if (skb_vlan_tag_present(skb)) {
2104 *flags |= TXFLAG_TAGON;
2105 *vlan = cpu_to_le16(skb_vlan_tag_get(skb));
2106 }
2107}
2108
2109static int
2110jme_fill_tx_desc(struct jme_adapter *jme, struct sk_buff *skb, int idx)
2111{
2112 struct jme_ring *txring = &(jme->txring[0]);
2113 struct txdesc *txdesc;
2114 struct jme_buffer_info *txbi;
2115 u8 flags;
2116 int ret = 0;
2117
2118 txdesc = (struct txdesc *)txring->desc + idx;
2119 txbi = txring->bufinf + idx;
2120
2121 txdesc->dw[0] = 0;
2122 txdesc->dw[1] = 0;
2123 txdesc->dw[2] = 0;
2124 txdesc->dw[3] = 0;
2125 txdesc->desc1.pktsize = cpu_to_le16(skb->len);
2126 /*
2127 * Set OWN bit at final.
2128 * When kernel transmit faster than NIC.
2129 * And NIC trying to send this descriptor before we tell
2130 * it to start sending this TX queue.
2131 * Other fields are already filled correctly.
2132 */
2133 wmb();
2134 flags = TXFLAG_OWN | TXFLAG_INT;
2135 /*
2136 * Set checksum flags while not tso
2137 */
2138 if (jme_tx_tso(skb, &txdesc->desc1.mss, &flags))
2139 jme_tx_csum(jme, skb, &flags);
2140 jme_tx_vlan(skb, &txdesc->desc1.vlan, &flags);
2141 ret = jme_map_tx_skb(jme, skb, idx);
2142 if (ret)
2143 return ret;
2144
2145 txdesc->desc1.flags = flags;
2146 /*
2147 * Set tx buffer info after telling NIC to send
2148 * For better tx_clean timing
2149 */
2150 wmb();
2151 txbi->nr_desc = skb_shinfo(skb)->nr_frags + 2;
2152 txbi->skb = skb;
2153 txbi->len = skb->len;
2154 txbi->start_xmit = jiffies;
2155 if (!txbi->start_xmit)
2156 txbi->start_xmit = (0UL-1);
2157
2158 return 0;
2159}
2160
2161static void
2162jme_stop_queue_if_full(struct jme_adapter *jme)
2163{
2164 struct jme_ring *txring = &(jme->txring[0]);
2165 struct jme_buffer_info *txbi = txring->bufinf;
2166 int idx = atomic_read(&txring->next_to_clean);
2167
2168 txbi += idx;
2169
2170 smp_wmb();
2171 if (unlikely(atomic_read(&txring->nr_free) < (MAX_SKB_FRAGS+2))) {
2172 netif_stop_queue(jme->dev);
2173 netif_info(jme, tx_queued, jme->dev, "TX Queue Paused\n");
2174 smp_wmb();
2175 if (atomic_read(&txring->nr_free)
2176 >= (jme->tx_wake_threshold)) {
2177 netif_wake_queue(jme->dev);
2178 netif_info(jme, tx_queued, jme->dev, "TX Queue Fast Waked\n");
2179 }
2180 }
2181
2182 if (unlikely(txbi->start_xmit &&
2183 time_is_before_eq_jiffies(txbi->start_xmit + TX_TIMEOUT) &&
2184 txbi->skb)) {
2185 netif_stop_queue(jme->dev);
2186 netif_info(jme, tx_queued, jme->dev,
2187 "TX Queue Stopped %d@%lu\n", idx, jiffies);
2188 }
2189}
2190
2191/*
2192 * This function is already protected by netif_tx_lock()
2193 */
2194
2195static netdev_tx_t
2196jme_start_xmit(struct sk_buff *skb, struct net_device *netdev)
2197{
2198 struct jme_adapter *jme = netdev_priv(netdev);
2199 int idx;
2200
2201 if (unlikely(skb_is_gso(skb) && skb_cow_head(skb, 0))) {
2202 dev_kfree_skb_any(skb);
2203 ++(NET_STAT(jme).tx_dropped);
2204 return NETDEV_TX_OK;
2205 }
2206
2207 idx = jme_alloc_txdesc(jme, skb);
2208
2209 if (unlikely(idx < 0)) {
2210 netif_stop_queue(netdev);
2211 netif_err(jme, tx_err, jme->dev,
2212 "BUG! Tx ring full when queue awake!\n");
2213
2214 return NETDEV_TX_BUSY;
2215 }
2216
2217 if (jme_fill_tx_desc(jme, skb, idx))
2218 return NETDEV_TX_OK;
2219
2220 jwrite32(jme, JME_TXCS, jme->reg_txcs |
2221 TXCS_SELECT_QUEUE0 |
2222 TXCS_QUEUE0S |
2223 TXCS_ENABLE);
2224
2225 tx_dbg(jme, "xmit: %d+%d@%lu\n",
2226 idx, skb_shinfo(skb)->nr_frags + 2, jiffies);
2227 jme_stop_queue_if_full(jme);
2228
2229 return NETDEV_TX_OK;
2230}
2231
2232static void
2233jme_set_unicastaddr(struct net_device *netdev)
2234{
2235 struct jme_adapter *jme = netdev_priv(netdev);
2236 u32 val;
2237
2238 val = (netdev->dev_addr[3] & 0xff) << 24 |
2239 (netdev->dev_addr[2] & 0xff) << 16 |
2240 (netdev->dev_addr[1] & 0xff) << 8 |
2241 (netdev->dev_addr[0] & 0xff);
2242 jwrite32(jme, JME_RXUMA_LO, val);
2243 val = (netdev->dev_addr[5] & 0xff) << 8 |
2244 (netdev->dev_addr[4] & 0xff);
2245 jwrite32(jme, JME_RXUMA_HI, val);
2246}
2247
2248static int
2249jme_set_macaddr(struct net_device *netdev, void *p)
2250{
2251 struct jme_adapter *jme = netdev_priv(netdev);
2252 struct sockaddr *addr = p;
2253
2254 if (netif_running(netdev))
2255 return -EBUSY;
2256
2257 spin_lock_bh(&jme->macaddr_lock);
2258 eth_hw_addr_set(netdev, addr->sa_data);
2259 jme_set_unicastaddr(netdev);
2260 spin_unlock_bh(&jme->macaddr_lock);
2261
2262 return 0;
2263}
2264
2265static void
2266jme_set_multi(struct net_device *netdev)
2267{
2268 struct jme_adapter *jme = netdev_priv(netdev);
2269 u32 mc_hash[2] = {};
2270
2271 spin_lock_bh(&jme->rxmcs_lock);
2272
2273 jme->reg_rxmcs |= RXMCS_BRDFRAME | RXMCS_UNIFRAME;
2274
2275 if (netdev->flags & IFF_PROMISC) {
2276 jme->reg_rxmcs |= RXMCS_ALLFRAME;
2277 } else if (netdev->flags & IFF_ALLMULTI) {
2278 jme->reg_rxmcs |= RXMCS_ALLMULFRAME;
2279 } else if (netdev->flags & IFF_MULTICAST) {
2280 struct netdev_hw_addr *ha;
2281 int bit_nr;
2282
2283 jme->reg_rxmcs |= RXMCS_MULFRAME | RXMCS_MULFILTERED;
2284 netdev_for_each_mc_addr(ha, netdev) {
2285 bit_nr = ether_crc(ETH_ALEN, ha->addr) & 0x3F;
2286 mc_hash[bit_nr >> 5] |= 1 << (bit_nr & 0x1F);
2287 }
2288
2289 jwrite32(jme, JME_RXMCHT_LO, mc_hash[0]);
2290 jwrite32(jme, JME_RXMCHT_HI, mc_hash[1]);
2291 }
2292
2293 wmb();
2294 jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2295
2296 spin_unlock_bh(&jme->rxmcs_lock);
2297}
2298
2299static int
2300jme_change_mtu(struct net_device *netdev, int new_mtu)
2301{
2302 struct jme_adapter *jme = netdev_priv(netdev);
2303
2304 netdev->mtu = new_mtu;
2305 netdev_update_features(netdev);
2306
2307 jme_restart_rx_engine(jme);
2308 jme_reset_link(jme);
2309
2310 return 0;
2311}
2312
2313static void
2314jme_tx_timeout(struct net_device *netdev, unsigned int txqueue)
2315{
2316 struct jme_adapter *jme = netdev_priv(netdev);
2317
2318 jme->phylink = 0;
2319 jme_reset_phy_processor(jme);
2320 if (test_bit(JME_FLAG_SSET, &jme->flags))
2321 jme_set_link_ksettings(netdev, &jme->old_cmd);
2322
2323 /*
2324 * Force to Reset the link again
2325 */
2326 jme_reset_link(jme);
2327}
2328
2329static void
2330jme_get_drvinfo(struct net_device *netdev,
2331 struct ethtool_drvinfo *info)
2332{
2333 struct jme_adapter *jme = netdev_priv(netdev);
2334
2335 strscpy(info->driver, DRV_NAME, sizeof(info->driver));
2336 strscpy(info->version, DRV_VERSION, sizeof(info->version));
2337 strscpy(info->bus_info, pci_name(jme->pdev), sizeof(info->bus_info));
2338}
2339
2340static int
2341jme_get_regs_len(struct net_device *netdev)
2342{
2343 return JME_REG_LEN;
2344}
2345
2346static void
2347mmapio_memcpy(struct jme_adapter *jme, u32 *p, u32 reg, int len)
2348{
2349 int i;
2350
2351 for (i = 0 ; i < len ; i += 4)
2352 p[i >> 2] = jread32(jme, reg + i);
2353}
2354
2355static void
2356mdio_memcpy(struct jme_adapter *jme, u32 *p, int reg_nr)
2357{
2358 int i;
2359 u16 *p16 = (u16 *)p;
2360
2361 for (i = 0 ; i < reg_nr ; ++i)
2362 p16[i] = jme_mdio_read(jme->dev, jme->mii_if.phy_id, i);
2363}
2364
2365static void
2366jme_get_regs(struct net_device *netdev, struct ethtool_regs *regs, void *p)
2367{
2368 struct jme_adapter *jme = netdev_priv(netdev);
2369 u32 *p32 = (u32 *)p;
2370
2371 memset(p, 0xFF, JME_REG_LEN);
2372
2373 regs->version = 1;
2374 mmapio_memcpy(jme, p32, JME_MAC, JME_MAC_LEN);
2375
2376 p32 += 0x100 >> 2;
2377 mmapio_memcpy(jme, p32, JME_PHY, JME_PHY_LEN);
2378
2379 p32 += 0x100 >> 2;
2380 mmapio_memcpy(jme, p32, JME_MISC, JME_MISC_LEN);
2381
2382 p32 += 0x100 >> 2;
2383 mmapio_memcpy(jme, p32, JME_RSS, JME_RSS_LEN);
2384
2385 p32 += 0x100 >> 2;
2386 mdio_memcpy(jme, p32, JME_PHY_REG_NR);
2387}
2388
2389static int jme_get_coalesce(struct net_device *netdev,
2390 struct ethtool_coalesce *ecmd,
2391 struct kernel_ethtool_coalesce *kernel_coal,
2392 struct netlink_ext_ack *extack)
2393{
2394 struct jme_adapter *jme = netdev_priv(netdev);
2395
2396 ecmd->tx_coalesce_usecs = PCC_TX_TO;
2397 ecmd->tx_max_coalesced_frames = PCC_TX_CNT;
2398
2399 if (test_bit(JME_FLAG_POLL, &jme->flags)) {
2400 ecmd->use_adaptive_rx_coalesce = false;
2401 ecmd->rx_coalesce_usecs = 0;
2402 ecmd->rx_max_coalesced_frames = 0;
2403 return 0;
2404 }
2405
2406 ecmd->use_adaptive_rx_coalesce = true;
2407
2408 switch (jme->dpi.cur) {
2409 case PCC_P1:
2410 ecmd->rx_coalesce_usecs = PCC_P1_TO;
2411 ecmd->rx_max_coalesced_frames = PCC_P1_CNT;
2412 break;
2413 case PCC_P2:
2414 ecmd->rx_coalesce_usecs = PCC_P2_TO;
2415 ecmd->rx_max_coalesced_frames = PCC_P2_CNT;
2416 break;
2417 case PCC_P3:
2418 ecmd->rx_coalesce_usecs = PCC_P3_TO;
2419 ecmd->rx_max_coalesced_frames = PCC_P3_CNT;
2420 break;
2421 default:
2422 break;
2423 }
2424
2425 return 0;
2426}
2427
2428static int jme_set_coalesce(struct net_device *netdev,
2429 struct ethtool_coalesce *ecmd,
2430 struct kernel_ethtool_coalesce *kernel_coal,
2431 struct netlink_ext_ack *extack)
2432{
2433 struct jme_adapter *jme = netdev_priv(netdev);
2434 struct dynpcc_info *dpi = &(jme->dpi);
2435
2436 if (netif_running(netdev))
2437 return -EBUSY;
2438
2439 if (ecmd->use_adaptive_rx_coalesce &&
2440 test_bit(JME_FLAG_POLL, &jme->flags)) {
2441 clear_bit(JME_FLAG_POLL, &jme->flags);
2442 jme->jme_rx = netif_rx;
2443 dpi->cur = PCC_P1;
2444 dpi->attempt = PCC_P1;
2445 dpi->cnt = 0;
2446 jme_set_rx_pcc(jme, PCC_P1);
2447 jme_interrupt_mode(jme);
2448 } else if (!(ecmd->use_adaptive_rx_coalesce) &&
2449 !(test_bit(JME_FLAG_POLL, &jme->flags))) {
2450 set_bit(JME_FLAG_POLL, &jme->flags);
2451 jme->jme_rx = netif_receive_skb;
2452 jme_interrupt_mode(jme);
2453 }
2454
2455 return 0;
2456}
2457
2458static void
2459jme_get_pauseparam(struct net_device *netdev,
2460 struct ethtool_pauseparam *ecmd)
2461{
2462 struct jme_adapter *jme = netdev_priv(netdev);
2463 u32 val;
2464
2465 ecmd->tx_pause = (jme->reg_txpfc & TXPFC_PF_EN) != 0;
2466 ecmd->rx_pause = (jme->reg_rxmcs & RXMCS_FLOWCTRL) != 0;
2467
2468 spin_lock_bh(&jme->phy_lock);
2469 val = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_ADVERTISE);
2470 spin_unlock_bh(&jme->phy_lock);
2471
2472 ecmd->autoneg =
2473 (val & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) != 0;
2474}
2475
2476static int
2477jme_set_pauseparam(struct net_device *netdev,
2478 struct ethtool_pauseparam *ecmd)
2479{
2480 struct jme_adapter *jme = netdev_priv(netdev);
2481 u32 val;
2482
2483 if (((jme->reg_txpfc & TXPFC_PF_EN) != 0) ^
2484 (ecmd->tx_pause != 0)) {
2485
2486 if (ecmd->tx_pause)
2487 jme->reg_txpfc |= TXPFC_PF_EN;
2488 else
2489 jme->reg_txpfc &= ~TXPFC_PF_EN;
2490
2491 jwrite32(jme, JME_TXPFC, jme->reg_txpfc);
2492 }
2493
2494 spin_lock_bh(&jme->rxmcs_lock);
2495 if (((jme->reg_rxmcs & RXMCS_FLOWCTRL) != 0) ^
2496 (ecmd->rx_pause != 0)) {
2497
2498 if (ecmd->rx_pause)
2499 jme->reg_rxmcs |= RXMCS_FLOWCTRL;
2500 else
2501 jme->reg_rxmcs &= ~RXMCS_FLOWCTRL;
2502
2503 jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2504 }
2505 spin_unlock_bh(&jme->rxmcs_lock);
2506
2507 spin_lock_bh(&jme->phy_lock);
2508 val = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_ADVERTISE);
2509 if (((val & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) != 0) ^
2510 (ecmd->autoneg != 0)) {
2511
2512 if (ecmd->autoneg)
2513 val |= (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
2514 else
2515 val &= ~(ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
2516
2517 jme_mdio_write(jme->dev, jme->mii_if.phy_id,
2518 MII_ADVERTISE, val);
2519 }
2520 spin_unlock_bh(&jme->phy_lock);
2521
2522 return 0;
2523}
2524
2525static void
2526jme_get_wol(struct net_device *netdev,
2527 struct ethtool_wolinfo *wol)
2528{
2529 struct jme_adapter *jme = netdev_priv(netdev);
2530
2531 wol->supported = WAKE_MAGIC | WAKE_PHY;
2532
2533 wol->wolopts = 0;
2534
2535 if (jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN))
2536 wol->wolopts |= WAKE_PHY;
2537
2538 if (jme->reg_pmcs & PMCS_MFEN)
2539 wol->wolopts |= WAKE_MAGIC;
2540
2541}
2542
2543static int
2544jme_set_wol(struct net_device *netdev,
2545 struct ethtool_wolinfo *wol)
2546{
2547 struct jme_adapter *jme = netdev_priv(netdev);
2548
2549 if (wol->wolopts & (WAKE_MAGICSECURE |
2550 WAKE_UCAST |
2551 WAKE_MCAST |
2552 WAKE_BCAST |
2553 WAKE_ARP))
2554 return -EOPNOTSUPP;
2555
2556 jme->reg_pmcs = 0;
2557
2558 if (wol->wolopts & WAKE_PHY)
2559 jme->reg_pmcs |= PMCS_LFEN | PMCS_LREN;
2560
2561 if (wol->wolopts & WAKE_MAGIC)
2562 jme->reg_pmcs |= PMCS_MFEN;
2563
2564 return 0;
2565}
2566
2567static int
2568jme_get_link_ksettings(struct net_device *netdev,
2569 struct ethtool_link_ksettings *cmd)
2570{
2571 struct jme_adapter *jme = netdev_priv(netdev);
2572
2573 spin_lock_bh(&jme->phy_lock);
2574 mii_ethtool_get_link_ksettings(&jme->mii_if, cmd);
2575 spin_unlock_bh(&jme->phy_lock);
2576 return 0;
2577}
2578
2579static int
2580jme_set_link_ksettings(struct net_device *netdev,
2581 const struct ethtool_link_ksettings *cmd)
2582{
2583 struct jme_adapter *jme = netdev_priv(netdev);
2584 int rc, fdc = 0;
2585
2586 if (cmd->base.speed == SPEED_1000 &&
2587 cmd->base.autoneg != AUTONEG_ENABLE)
2588 return -EINVAL;
2589
2590 /*
2591 * Check If user changed duplex only while force_media.
2592 * Hardware would not generate link change interrupt.
2593 */
2594 if (jme->mii_if.force_media &&
2595 cmd->base.autoneg != AUTONEG_ENABLE &&
2596 (jme->mii_if.full_duplex != cmd->base.duplex))
2597 fdc = 1;
2598
2599 spin_lock_bh(&jme->phy_lock);
2600 rc = mii_ethtool_set_link_ksettings(&jme->mii_if, cmd);
2601 spin_unlock_bh(&jme->phy_lock);
2602
2603 if (!rc) {
2604 if (fdc)
2605 jme_reset_link(jme);
2606 jme->old_cmd = *cmd;
2607 set_bit(JME_FLAG_SSET, &jme->flags);
2608 }
2609
2610 return rc;
2611}
2612
2613static int
2614jme_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd)
2615{
2616 int rc;
2617 struct jme_adapter *jme = netdev_priv(netdev);
2618 struct mii_ioctl_data *mii_data = if_mii(rq);
2619 unsigned int duplex_chg;
2620
2621 if (cmd == SIOCSMIIREG) {
2622 u16 val = mii_data->val_in;
2623 if (!(val & (BMCR_RESET|BMCR_ANENABLE)) &&
2624 (val & BMCR_SPEED1000))
2625 return -EINVAL;
2626 }
2627
2628 spin_lock_bh(&jme->phy_lock);
2629 rc = generic_mii_ioctl(&jme->mii_if, mii_data, cmd, &duplex_chg);
2630 spin_unlock_bh(&jme->phy_lock);
2631
2632 if (!rc && (cmd == SIOCSMIIREG)) {
2633 if (duplex_chg)
2634 jme_reset_link(jme);
2635 jme_get_link_ksettings(netdev, &jme->old_cmd);
2636 set_bit(JME_FLAG_SSET, &jme->flags);
2637 }
2638
2639 return rc;
2640}
2641
2642static u32
2643jme_get_link(struct net_device *netdev)
2644{
2645 struct jme_adapter *jme = netdev_priv(netdev);
2646 return jread32(jme, JME_PHY_LINK) & PHY_LINK_UP;
2647}
2648
2649static u32
2650jme_get_msglevel(struct net_device *netdev)
2651{
2652 struct jme_adapter *jme = netdev_priv(netdev);
2653 return jme->msg_enable;
2654}
2655
2656static void
2657jme_set_msglevel(struct net_device *netdev, u32 value)
2658{
2659 struct jme_adapter *jme = netdev_priv(netdev);
2660 jme->msg_enable = value;
2661}
2662
2663static netdev_features_t
2664jme_fix_features(struct net_device *netdev, netdev_features_t features)
2665{
2666 if (netdev->mtu > 1900)
2667 features &= ~(NETIF_F_ALL_TSO | NETIF_F_CSUM_MASK);
2668 return features;
2669}
2670
2671static int
2672jme_set_features(struct net_device *netdev, netdev_features_t features)
2673{
2674 struct jme_adapter *jme = netdev_priv(netdev);
2675
2676 spin_lock_bh(&jme->rxmcs_lock);
2677 if (features & NETIF_F_RXCSUM)
2678 jme->reg_rxmcs |= RXMCS_CHECKSUM;
2679 else
2680 jme->reg_rxmcs &= ~RXMCS_CHECKSUM;
2681 jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2682 spin_unlock_bh(&jme->rxmcs_lock);
2683
2684 return 0;
2685}
2686
2687#ifdef CONFIG_NET_POLL_CONTROLLER
2688static void jme_netpoll(struct net_device *dev)
2689{
2690 unsigned long flags;
2691
2692 local_irq_save(flags);
2693 jme_intr(dev->irq, dev);
2694 local_irq_restore(flags);
2695}
2696#endif
2697
2698static int
2699jme_nway_reset(struct net_device *netdev)
2700{
2701 struct jme_adapter *jme = netdev_priv(netdev);
2702 jme_restart_an(jme);
2703 return 0;
2704}
2705
2706static u8
2707jme_smb_read(struct jme_adapter *jme, unsigned int addr)
2708{
2709 u32 val;
2710 int to;
2711
2712 val = jread32(jme, JME_SMBCSR);
2713 to = JME_SMB_BUSY_TIMEOUT;
2714 while ((val & SMBCSR_BUSY) && --to) {
2715 msleep(1);
2716 val = jread32(jme, JME_SMBCSR);
2717 }
2718 if (!to) {
2719 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2720 return 0xFF;
2721 }
2722
2723 jwrite32(jme, JME_SMBINTF,
2724 ((addr << SMBINTF_HWADDR_SHIFT) & SMBINTF_HWADDR) |
2725 SMBINTF_HWRWN_READ |
2726 SMBINTF_HWCMD);
2727
2728 val = jread32(jme, JME_SMBINTF);
2729 to = JME_SMB_BUSY_TIMEOUT;
2730 while ((val & SMBINTF_HWCMD) && --to) {
2731 msleep(1);
2732 val = jread32(jme, JME_SMBINTF);
2733 }
2734 if (!to) {
2735 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2736 return 0xFF;
2737 }
2738
2739 return (val & SMBINTF_HWDATR) >> SMBINTF_HWDATR_SHIFT;
2740}
2741
2742static void
2743jme_smb_write(struct jme_adapter *jme, unsigned int addr, u8 data)
2744{
2745 u32 val;
2746 int to;
2747
2748 val = jread32(jme, JME_SMBCSR);
2749 to = JME_SMB_BUSY_TIMEOUT;
2750 while ((val & SMBCSR_BUSY) && --to) {
2751 msleep(1);
2752 val = jread32(jme, JME_SMBCSR);
2753 }
2754 if (!to) {
2755 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2756 return;
2757 }
2758
2759 jwrite32(jme, JME_SMBINTF,
2760 ((data << SMBINTF_HWDATW_SHIFT) & SMBINTF_HWDATW) |
2761 ((addr << SMBINTF_HWADDR_SHIFT) & SMBINTF_HWADDR) |
2762 SMBINTF_HWRWN_WRITE |
2763 SMBINTF_HWCMD);
2764
2765 val = jread32(jme, JME_SMBINTF);
2766 to = JME_SMB_BUSY_TIMEOUT;
2767 while ((val & SMBINTF_HWCMD) && --to) {
2768 msleep(1);
2769 val = jread32(jme, JME_SMBINTF);
2770 }
2771 if (!to) {
2772 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2773 return;
2774 }
2775
2776 mdelay(2);
2777}
2778
2779static int
2780jme_get_eeprom_len(struct net_device *netdev)
2781{
2782 struct jme_adapter *jme = netdev_priv(netdev);
2783 u32 val;
2784 val = jread32(jme, JME_SMBCSR);
2785 return (val & SMBCSR_EEPROMD) ? JME_SMB_LEN : 0;
2786}
2787
2788static int
2789jme_get_eeprom(struct net_device *netdev,
2790 struct ethtool_eeprom *eeprom, u8 *data)
2791{
2792 struct jme_adapter *jme = netdev_priv(netdev);
2793 int i, offset = eeprom->offset, len = eeprom->len;
2794
2795 /*
2796 * ethtool will check the boundary for us
2797 */
2798 eeprom->magic = JME_EEPROM_MAGIC;
2799 for (i = 0 ; i < len ; ++i)
2800 data[i] = jme_smb_read(jme, i + offset);
2801
2802 return 0;
2803}
2804
2805static int
2806jme_set_eeprom(struct net_device *netdev,
2807 struct ethtool_eeprom *eeprom, u8 *data)
2808{
2809 struct jme_adapter *jme = netdev_priv(netdev);
2810 int i, offset = eeprom->offset, len = eeprom->len;
2811
2812 if (eeprom->magic != JME_EEPROM_MAGIC)
2813 return -EINVAL;
2814
2815 /*
2816 * ethtool will check the boundary for us
2817 */
2818 for (i = 0 ; i < len ; ++i)
2819 jme_smb_write(jme, i + offset, data[i]);
2820
2821 return 0;
2822}
2823
2824static const struct ethtool_ops jme_ethtool_ops = {
2825 .supported_coalesce_params = ETHTOOL_COALESCE_USECS |
2826 ETHTOOL_COALESCE_MAX_FRAMES |
2827 ETHTOOL_COALESCE_USE_ADAPTIVE_RX,
2828 .get_drvinfo = jme_get_drvinfo,
2829 .get_regs_len = jme_get_regs_len,
2830 .get_regs = jme_get_regs,
2831 .get_coalesce = jme_get_coalesce,
2832 .set_coalesce = jme_set_coalesce,
2833 .get_pauseparam = jme_get_pauseparam,
2834 .set_pauseparam = jme_set_pauseparam,
2835 .get_wol = jme_get_wol,
2836 .set_wol = jme_set_wol,
2837 .get_link = jme_get_link,
2838 .get_msglevel = jme_get_msglevel,
2839 .set_msglevel = jme_set_msglevel,
2840 .nway_reset = jme_nway_reset,
2841 .get_eeprom_len = jme_get_eeprom_len,
2842 .get_eeprom = jme_get_eeprom,
2843 .set_eeprom = jme_set_eeprom,
2844 .get_link_ksettings = jme_get_link_ksettings,
2845 .set_link_ksettings = jme_set_link_ksettings,
2846};
2847
2848static int
2849jme_pci_dma64(struct pci_dev *pdev)
2850{
2851 if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250 &&
2852 !dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)))
2853 return 1;
2854
2855 if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250 &&
2856 !dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(40)))
2857 return 1;
2858
2859 if (!dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
2860 return 0;
2861
2862 return -1;
2863}
2864
2865static inline void
2866jme_phy_init(struct jme_adapter *jme)
2867{
2868 u16 reg26;
2869
2870 reg26 = jme_mdio_read(jme->dev, jme->mii_if.phy_id, 26);
2871 jme_mdio_write(jme->dev, jme->mii_if.phy_id, 26, reg26 | 0x1000);
2872}
2873
2874static inline void
2875jme_check_hw_ver(struct jme_adapter *jme)
2876{
2877 u32 chipmode;
2878
2879 chipmode = jread32(jme, JME_CHIPMODE);
2880
2881 jme->fpgaver = (chipmode & CM_FPGAVER_MASK) >> CM_FPGAVER_SHIFT;
2882 jme->chiprev = (chipmode & CM_CHIPREV_MASK) >> CM_CHIPREV_SHIFT;
2883 jme->chip_main_rev = jme->chiprev & 0xF;
2884 jme->chip_sub_rev = (jme->chiprev >> 4) & 0xF;
2885}
2886
2887static const struct net_device_ops jme_netdev_ops = {
2888 .ndo_open = jme_open,
2889 .ndo_stop = jme_close,
2890 .ndo_validate_addr = eth_validate_addr,
2891 .ndo_eth_ioctl = jme_ioctl,
2892 .ndo_start_xmit = jme_start_xmit,
2893 .ndo_set_mac_address = jme_set_macaddr,
2894 .ndo_set_rx_mode = jme_set_multi,
2895 .ndo_change_mtu = jme_change_mtu,
2896 .ndo_tx_timeout = jme_tx_timeout,
2897 .ndo_fix_features = jme_fix_features,
2898 .ndo_set_features = jme_set_features,
2899#ifdef CONFIG_NET_POLL_CONTROLLER
2900 .ndo_poll_controller = jme_netpoll,
2901#endif
2902};
2903
2904static int
2905jme_init_one(struct pci_dev *pdev,
2906 const struct pci_device_id *ent)
2907{
2908 int rc = 0, using_dac, i;
2909 struct net_device *netdev;
2910 struct jme_adapter *jme;
2911 u16 bmcr, bmsr;
2912 u32 apmc;
2913
2914 /*
2915 * set up PCI device basics
2916 */
2917 pci_disable_link_state(pdev, PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1 |
2918 PCIE_LINK_STATE_CLKPM);
2919
2920 rc = pci_enable_device(pdev);
2921 if (rc) {
2922 pr_err("Cannot enable PCI device\n");
2923 goto err_out;
2924 }
2925
2926 using_dac = jme_pci_dma64(pdev);
2927 if (using_dac < 0) {
2928 pr_err("Cannot set PCI DMA Mask\n");
2929 rc = -EIO;
2930 goto err_out_disable_pdev;
2931 }
2932
2933 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
2934 pr_err("No PCI resource region found\n");
2935 rc = -ENOMEM;
2936 goto err_out_disable_pdev;
2937 }
2938
2939 rc = pci_request_regions(pdev, DRV_NAME);
2940 if (rc) {
2941 pr_err("Cannot obtain PCI resource region\n");
2942 goto err_out_disable_pdev;
2943 }
2944
2945 pci_set_master(pdev);
2946
2947 /*
2948 * alloc and init net device
2949 */
2950 netdev = alloc_etherdev(sizeof(*jme));
2951 if (!netdev) {
2952 rc = -ENOMEM;
2953 goto err_out_release_regions;
2954 }
2955 netdev->netdev_ops = &jme_netdev_ops;
2956 netdev->ethtool_ops = &jme_ethtool_ops;
2957 netdev->watchdog_timeo = TX_TIMEOUT;
2958 netdev->hw_features = NETIF_F_IP_CSUM |
2959 NETIF_F_IPV6_CSUM |
2960 NETIF_F_SG |
2961 NETIF_F_TSO |
2962 NETIF_F_TSO6 |
2963 NETIF_F_RXCSUM;
2964 netdev->features = NETIF_F_IP_CSUM |
2965 NETIF_F_IPV6_CSUM |
2966 NETIF_F_SG |
2967 NETIF_F_TSO |
2968 NETIF_F_TSO6 |
2969 NETIF_F_HW_VLAN_CTAG_TX |
2970 NETIF_F_HW_VLAN_CTAG_RX;
2971 if (using_dac)
2972 netdev->features |= NETIF_F_HIGHDMA;
2973
2974 /* MTU range: 1280 - 9202*/
2975 netdev->min_mtu = IPV6_MIN_MTU;
2976 netdev->max_mtu = MAX_ETHERNET_JUMBO_PACKET_SIZE - ETH_HLEN;
2977
2978 SET_NETDEV_DEV(netdev, &pdev->dev);
2979 pci_set_drvdata(pdev, netdev);
2980
2981 /*
2982 * init adapter info
2983 */
2984 jme = netdev_priv(netdev);
2985 jme->pdev = pdev;
2986 jme->dev = netdev;
2987 jme->jme_rx = netif_rx;
2988 jme->old_mtu = netdev->mtu = 1500;
2989 jme->phylink = 0;
2990 jme->tx_ring_size = 1 << 10;
2991 jme->tx_ring_mask = jme->tx_ring_size - 1;
2992 jme->tx_wake_threshold = 1 << 9;
2993 jme->rx_ring_size = 1 << 9;
2994 jme->rx_ring_mask = jme->rx_ring_size - 1;
2995 jme->msg_enable = JME_DEF_MSG_ENABLE;
2996 jme->regs = ioremap(pci_resource_start(pdev, 0),
2997 pci_resource_len(pdev, 0));
2998 if (!(jme->regs)) {
2999 pr_err("Mapping PCI resource region error\n");
3000 rc = -ENOMEM;
3001 goto err_out_free_netdev;
3002 }
3003
3004 if (no_pseudohp) {
3005 apmc = jread32(jme, JME_APMC) & ~JME_APMC_PSEUDO_HP_EN;
3006 jwrite32(jme, JME_APMC, apmc);
3007 } else if (force_pseudohp) {
3008 apmc = jread32(jme, JME_APMC) | JME_APMC_PSEUDO_HP_EN;
3009 jwrite32(jme, JME_APMC, apmc);
3010 }
3011
3012 netif_napi_add(netdev, &jme->napi, jme_poll);
3013
3014 spin_lock_init(&jme->phy_lock);
3015 spin_lock_init(&jme->macaddr_lock);
3016 spin_lock_init(&jme->rxmcs_lock);
3017
3018 atomic_set(&jme->link_changing, 1);
3019 atomic_set(&jme->rx_cleaning, 1);
3020 atomic_set(&jme->tx_cleaning, 1);
3021 atomic_set(&jme->rx_empty, 1);
3022
3023 tasklet_setup(&jme->pcc_task, jme_pcc_tasklet);
3024 INIT_WORK(&jme->linkch_task, jme_link_change_work);
3025 jme->dpi.cur = PCC_P1;
3026
3027 jme->reg_ghc = 0;
3028 jme->reg_rxcs = RXCS_DEFAULT;
3029 jme->reg_rxmcs = RXMCS_DEFAULT;
3030 jme->reg_txpfc = 0;
3031 jme->reg_pmcs = PMCS_MFEN;
3032 jme->reg_gpreg1 = GPREG1_DEFAULT;
3033
3034 if (jme->reg_rxmcs & RXMCS_CHECKSUM)
3035 netdev->features |= NETIF_F_RXCSUM;
3036
3037 /*
3038 * Get Max Read Req Size from PCI Config Space
3039 */
3040 pci_read_config_byte(pdev, PCI_DCSR_MRRS, &jme->mrrs);
3041 jme->mrrs &= PCI_DCSR_MRRS_MASK;
3042 switch (jme->mrrs) {
3043 case MRRS_128B:
3044 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_128B;
3045 break;
3046 case MRRS_256B:
3047 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_256B;
3048 break;
3049 default:
3050 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_512B;
3051 break;
3052 }
3053
3054 /*
3055 * Must check before reset_mac_processor
3056 */
3057 jme_check_hw_ver(jme);
3058 jme->mii_if.dev = netdev;
3059 if (jme->fpgaver) {
3060 jme->mii_if.phy_id = 0;
3061 for (i = 1 ; i < 32 ; ++i) {
3062 bmcr = jme_mdio_read(netdev, i, MII_BMCR);
3063 bmsr = jme_mdio_read(netdev, i, MII_BMSR);
3064 if (bmcr != 0xFFFFU && (bmcr != 0 || bmsr != 0)) {
3065 jme->mii_if.phy_id = i;
3066 break;
3067 }
3068 }
3069
3070 if (!jme->mii_if.phy_id) {
3071 rc = -EIO;
3072 pr_err("Can not find phy_id\n");
3073 goto err_out_unmap;
3074 }
3075
3076 jme->reg_ghc |= GHC_LINK_POLL;
3077 } else {
3078 jme->mii_if.phy_id = 1;
3079 }
3080 if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250)
3081 jme->mii_if.supports_gmii = true;
3082 else
3083 jme->mii_if.supports_gmii = false;
3084 jme->mii_if.phy_id_mask = 0x1F;
3085 jme->mii_if.reg_num_mask = 0x1F;
3086 jme->mii_if.mdio_read = jme_mdio_read;
3087 jme->mii_if.mdio_write = jme_mdio_write;
3088
3089 jme_clear_pm_disable_wol(jme);
3090 device_init_wakeup(&pdev->dev, true);
3091
3092 jme_set_phyfifo_5level(jme);
3093 jme->pcirev = pdev->revision;
3094 if (!jme->fpgaver)
3095 jme_phy_init(jme);
3096 jme_phy_off(jme);
3097
3098 /*
3099 * Reset MAC processor and reload EEPROM for MAC Address
3100 */
3101 jme_reset_mac_processor(jme);
3102 rc = jme_reload_eeprom(jme);
3103 if (rc) {
3104 pr_err("Reload eeprom for reading MAC Address error\n");
3105 goto err_out_unmap;
3106 }
3107 jme_load_macaddr(netdev);
3108
3109 /*
3110 * Tell stack that we are not ready to work until open()
3111 */
3112 netif_carrier_off(netdev);
3113
3114 rc = register_netdev(netdev);
3115 if (rc) {
3116 pr_err("Cannot register net device\n");
3117 goto err_out_unmap;
3118 }
3119
3120 netif_info(jme, probe, jme->dev, "%s%s chiprev:%x pcirev:%x macaddr:%pM\n",
3121 (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC250) ?
3122 "JMC250 Gigabit Ethernet" :
3123 (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC260) ?
3124 "JMC260 Fast Ethernet" : "Unknown",
3125 (jme->fpgaver != 0) ? " (FPGA)" : "",
3126 (jme->fpgaver != 0) ? jme->fpgaver : jme->chiprev,
3127 jme->pcirev, netdev->dev_addr);
3128
3129 return 0;
3130
3131err_out_unmap:
3132 iounmap(jme->regs);
3133err_out_free_netdev:
3134 free_netdev(netdev);
3135err_out_release_regions:
3136 pci_release_regions(pdev);
3137err_out_disable_pdev:
3138 pci_disable_device(pdev);
3139err_out:
3140 return rc;
3141}
3142
3143static void
3144jme_remove_one(struct pci_dev *pdev)
3145{
3146 struct net_device *netdev = pci_get_drvdata(pdev);
3147 struct jme_adapter *jme = netdev_priv(netdev);
3148
3149 unregister_netdev(netdev);
3150 iounmap(jme->regs);
3151 free_netdev(netdev);
3152 pci_release_regions(pdev);
3153 pci_disable_device(pdev);
3154
3155}
3156
3157static void
3158jme_shutdown(struct pci_dev *pdev)
3159{
3160 struct net_device *netdev = pci_get_drvdata(pdev);
3161 struct jme_adapter *jme = netdev_priv(netdev);
3162
3163 jme_powersave_phy(jme);
3164 pci_pme_active(pdev, true);
3165}
3166
3167#ifdef CONFIG_PM_SLEEP
3168static int
3169jme_suspend(struct device *dev)
3170{
3171 struct net_device *netdev = dev_get_drvdata(dev);
3172 struct jme_adapter *jme = netdev_priv(netdev);
3173
3174 if (!netif_running(netdev))
3175 return 0;
3176
3177 atomic_dec(&jme->link_changing);
3178
3179 netif_device_detach(netdev);
3180 netif_stop_queue(netdev);
3181 jme_stop_irq(jme);
3182
3183 tasklet_disable(&jme->txclean_task);
3184 tasklet_disable(&jme->rxclean_task);
3185 tasklet_disable(&jme->rxempty_task);
3186
3187 if (netif_carrier_ok(netdev)) {
3188 if (test_bit(JME_FLAG_POLL, &jme->flags))
3189 jme_polling_mode(jme);
3190
3191 jme_stop_pcc_timer(jme);
3192 jme_disable_rx_engine(jme);
3193 jme_disable_tx_engine(jme);
3194 jme_reset_mac_processor(jme);
3195 jme_free_rx_resources(jme);
3196 jme_free_tx_resources(jme);
3197 netif_carrier_off(netdev);
3198 jme->phylink = 0;
3199 }
3200
3201 tasklet_enable(&jme->txclean_task);
3202 tasklet_enable(&jme->rxclean_task);
3203 tasklet_enable(&jme->rxempty_task);
3204
3205 jme_powersave_phy(jme);
3206
3207 return 0;
3208}
3209
3210static int
3211jme_resume(struct device *dev)
3212{
3213 struct net_device *netdev = dev_get_drvdata(dev);
3214 struct jme_adapter *jme = netdev_priv(netdev);
3215
3216 if (!netif_running(netdev))
3217 return 0;
3218
3219 jme_clear_pm_disable_wol(jme);
3220 jme_phy_on(jme);
3221 if (test_bit(JME_FLAG_SSET, &jme->flags))
3222 jme_set_link_ksettings(netdev, &jme->old_cmd);
3223 else
3224 jme_reset_phy_processor(jme);
3225 jme_phy_calibration(jme);
3226 jme_phy_setEA(jme);
3227 netif_device_attach(netdev);
3228
3229 atomic_inc(&jme->link_changing);
3230
3231 jme_reset_link(jme);
3232
3233 jme_start_irq(jme);
3234
3235 return 0;
3236}
3237
3238static SIMPLE_DEV_PM_OPS(jme_pm_ops, jme_suspend, jme_resume);
3239#define JME_PM_OPS (&jme_pm_ops)
3240
3241#else
3242
3243#define JME_PM_OPS NULL
3244#endif
3245
3246static const struct pci_device_id jme_pci_tbl[] = {
3247 { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMC250) },
3248 { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMC260) },
3249 { }
3250};
3251
3252static struct pci_driver jme_driver = {
3253 .name = DRV_NAME,
3254 .id_table = jme_pci_tbl,
3255 .probe = jme_init_one,
3256 .remove = jme_remove_one,
3257 .shutdown = jme_shutdown,
3258 .driver.pm = JME_PM_OPS,
3259};
3260
3261static int __init
3262jme_init_module(void)
3263{
3264 pr_info("JMicron JMC2XX ethernet driver version %s\n", DRV_VERSION);
3265 return pci_register_driver(&jme_driver);
3266}
3267
3268static void __exit
3269jme_cleanup_module(void)
3270{
3271 pci_unregister_driver(&jme_driver);
3272}
3273
3274module_init(jme_init_module);
3275module_exit(jme_cleanup_module);
3276
3277MODULE_AUTHOR("Guo-Fu Tseng <cooldavid@cooldavid.org>");
3278MODULE_DESCRIPTION("JMicron JMC2x0 PCI Express Ethernet driver");
3279MODULE_LICENSE("GPL");
3280MODULE_VERSION(DRV_VERSION);
3281MODULE_DEVICE_TABLE(pci, jme_pci_tbl);
1/*
2 * JMicron JMC2x0 series PCIe Ethernet Linux Device Driver
3 *
4 * Copyright 2008 JMicron Technology Corporation
5 * http://www.jmicron.com/
6 * Copyright (c) 2009 - 2010 Guo-Fu Tseng <cooldavid@cooldavid.org>
7 *
8 * Author: Guo-Fu Tseng <cooldavid@cooldavid.org>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 *
23 */
24
25#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
26
27#include <linux/module.h>
28#include <linux/kernel.h>
29#include <linux/pci.h>
30#include <linux/netdevice.h>
31#include <linux/etherdevice.h>
32#include <linux/ethtool.h>
33#include <linux/mii.h>
34#include <linux/crc32.h>
35#include <linux/delay.h>
36#include <linux/spinlock.h>
37#include <linux/in.h>
38#include <linux/ip.h>
39#include <linux/ipv6.h>
40#include <linux/tcp.h>
41#include <linux/udp.h>
42#include <linux/if_vlan.h>
43#include <linux/slab.h>
44#include <net/ip6_checksum.h>
45#include "jme.h"
46
47static int force_pseudohp = -1;
48static int no_pseudohp = -1;
49static int no_extplug = -1;
50module_param(force_pseudohp, int, 0);
51MODULE_PARM_DESC(force_pseudohp,
52 "Enable pseudo hot-plug feature manually by driver instead of BIOS.");
53module_param(no_pseudohp, int, 0);
54MODULE_PARM_DESC(no_pseudohp, "Disable pseudo hot-plug feature.");
55module_param(no_extplug, int, 0);
56MODULE_PARM_DESC(no_extplug,
57 "Do not use external plug signal for pseudo hot-plug.");
58
59static int
60jme_mdio_read(struct net_device *netdev, int phy, int reg)
61{
62 struct jme_adapter *jme = netdev_priv(netdev);
63 int i, val, again = (reg == MII_BMSR) ? 1 : 0;
64
65read_again:
66 jwrite32(jme, JME_SMI, SMI_OP_REQ |
67 smi_phy_addr(phy) |
68 smi_reg_addr(reg));
69
70 wmb();
71 for (i = JME_PHY_TIMEOUT * 50 ; i > 0 ; --i) {
72 udelay(20);
73 val = jread32(jme, JME_SMI);
74 if ((val & SMI_OP_REQ) == 0)
75 break;
76 }
77
78 if (i == 0) {
79 pr_err("phy(%d) read timeout : %d\n", phy, reg);
80 return 0;
81 }
82
83 if (again--)
84 goto read_again;
85
86 return (val & SMI_DATA_MASK) >> SMI_DATA_SHIFT;
87}
88
89static void
90jme_mdio_write(struct net_device *netdev,
91 int phy, int reg, int val)
92{
93 struct jme_adapter *jme = netdev_priv(netdev);
94 int i;
95
96 jwrite32(jme, JME_SMI, SMI_OP_WRITE | SMI_OP_REQ |
97 ((val << SMI_DATA_SHIFT) & SMI_DATA_MASK) |
98 smi_phy_addr(phy) | smi_reg_addr(reg));
99
100 wmb();
101 for (i = JME_PHY_TIMEOUT * 50 ; i > 0 ; --i) {
102 udelay(20);
103 if ((jread32(jme, JME_SMI) & SMI_OP_REQ) == 0)
104 break;
105 }
106
107 if (i == 0)
108 pr_err("phy(%d) write timeout : %d\n", phy, reg);
109}
110
111static inline void
112jme_reset_phy_processor(struct jme_adapter *jme)
113{
114 u32 val;
115
116 jme_mdio_write(jme->dev,
117 jme->mii_if.phy_id,
118 MII_ADVERTISE, ADVERTISE_ALL |
119 ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
120
121 if (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC250)
122 jme_mdio_write(jme->dev,
123 jme->mii_if.phy_id,
124 MII_CTRL1000,
125 ADVERTISE_1000FULL | ADVERTISE_1000HALF);
126
127 val = jme_mdio_read(jme->dev,
128 jme->mii_if.phy_id,
129 MII_BMCR);
130
131 jme_mdio_write(jme->dev,
132 jme->mii_if.phy_id,
133 MII_BMCR, val | BMCR_RESET);
134}
135
136static void
137jme_setup_wakeup_frame(struct jme_adapter *jme,
138 const 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_mac_rxclk_off(struct jme_adapter *jme)
165{
166 jme->reg_gpreg1 |= GPREG1_RXCLKOFF;
167 jwrite32f(jme, JME_GPREG1, jme->reg_gpreg1);
168}
169
170static inline void
171jme_mac_rxclk_on(struct jme_adapter *jme)
172{
173 jme->reg_gpreg1 &= ~GPREG1_RXCLKOFF;
174 jwrite32f(jme, JME_GPREG1, jme->reg_gpreg1);
175}
176
177static inline void
178jme_mac_txclk_off(struct jme_adapter *jme)
179{
180 jme->reg_ghc &= ~(GHC_TO_CLK_SRC | GHC_TXMAC_CLK_SRC);
181 jwrite32f(jme, JME_GHC, jme->reg_ghc);
182}
183
184static inline void
185jme_mac_txclk_on(struct jme_adapter *jme)
186{
187 u32 speed = jme->reg_ghc & GHC_SPEED;
188 if (speed == GHC_SPEED_1000M)
189 jme->reg_ghc |= GHC_TO_CLK_GPHY | GHC_TXMAC_CLK_GPHY;
190 else
191 jme->reg_ghc |= GHC_TO_CLK_PCIE | GHC_TXMAC_CLK_PCIE;
192 jwrite32f(jme, JME_GHC, jme->reg_ghc);
193}
194
195static inline void
196jme_reset_ghc_speed(struct jme_adapter *jme)
197{
198 jme->reg_ghc &= ~(GHC_SPEED | GHC_DPX);
199 jwrite32f(jme, JME_GHC, jme->reg_ghc);
200}
201
202static inline void
203jme_reset_250A2_workaround(struct jme_adapter *jme)
204{
205 jme->reg_gpreg1 &= ~(GPREG1_HALFMODEPATCH |
206 GPREG1_RSSPATCH);
207 jwrite32(jme, JME_GPREG1, jme->reg_gpreg1);
208}
209
210static inline void
211jme_assert_ghc_reset(struct jme_adapter *jme)
212{
213 jme->reg_ghc |= GHC_SWRST;
214 jwrite32f(jme, JME_GHC, jme->reg_ghc);
215}
216
217static inline void
218jme_clear_ghc_reset(struct jme_adapter *jme)
219{
220 jme->reg_ghc &= ~GHC_SWRST;
221 jwrite32f(jme, JME_GHC, jme->reg_ghc);
222}
223
224static inline void
225jme_reset_mac_processor(struct jme_adapter *jme)
226{
227 static const u32 mask[WAKEUP_FRAME_MASK_DWNR] = {0, 0, 0, 0};
228 u32 crc = 0xCDCDCDCD;
229 u32 gpreg0;
230 int i;
231
232 jme_reset_ghc_speed(jme);
233 jme_reset_250A2_workaround(jme);
234
235 jme_mac_rxclk_on(jme);
236 jme_mac_txclk_on(jme);
237 udelay(1);
238 jme_assert_ghc_reset(jme);
239 udelay(1);
240 jme_mac_rxclk_off(jme);
241 jme_mac_txclk_off(jme);
242 udelay(1);
243 jme_clear_ghc_reset(jme);
244 udelay(1);
245 jme_mac_rxclk_on(jme);
246 jme_mac_txclk_on(jme);
247 udelay(1);
248 jme_mac_rxclk_off(jme);
249 jme_mac_txclk_off(jme);
250
251 jwrite32(jme, JME_RXDBA_LO, 0x00000000);
252 jwrite32(jme, JME_RXDBA_HI, 0x00000000);
253 jwrite32(jme, JME_RXQDC, 0x00000000);
254 jwrite32(jme, JME_RXNDA, 0x00000000);
255 jwrite32(jme, JME_TXDBA_LO, 0x00000000);
256 jwrite32(jme, JME_TXDBA_HI, 0x00000000);
257 jwrite32(jme, JME_TXQDC, 0x00000000);
258 jwrite32(jme, JME_TXNDA, 0x00000000);
259
260 jwrite32(jme, JME_RXMCHT_LO, 0x00000000);
261 jwrite32(jme, JME_RXMCHT_HI, 0x00000000);
262 for (i = 0 ; i < WAKEUP_FRAME_NR ; ++i)
263 jme_setup_wakeup_frame(jme, mask, crc, i);
264 if (jme->fpgaver)
265 gpreg0 = GPREG0_DEFAULT | GPREG0_LNKINTPOLL;
266 else
267 gpreg0 = GPREG0_DEFAULT;
268 jwrite32(jme, JME_GPREG0, gpreg0);
269}
270
271static inline void
272jme_clear_pm(struct jme_adapter *jme)
273{
274 jwrite32(jme, JME_PMCS, PMCS_STMASK | jme->reg_pmcs);
275}
276
277static int
278jme_reload_eeprom(struct jme_adapter *jme)
279{
280 u32 val;
281 int i;
282
283 val = jread32(jme, JME_SMBCSR);
284
285 if (val & SMBCSR_EEPROMD) {
286 val |= SMBCSR_CNACK;
287 jwrite32(jme, JME_SMBCSR, val);
288 val |= SMBCSR_RELOAD;
289 jwrite32(jme, JME_SMBCSR, val);
290 mdelay(12);
291
292 for (i = JME_EEPROM_RELOAD_TIMEOUT; i > 0; --i) {
293 mdelay(1);
294 if ((jread32(jme, JME_SMBCSR) & SMBCSR_RELOAD) == 0)
295 break;
296 }
297
298 if (i == 0) {
299 pr_err("eeprom reload timeout\n");
300 return -EIO;
301 }
302 }
303
304 return 0;
305}
306
307static void
308jme_load_macaddr(struct net_device *netdev)
309{
310 struct jme_adapter *jme = netdev_priv(netdev);
311 unsigned char macaddr[6];
312 u32 val;
313
314 spin_lock_bh(&jme->macaddr_lock);
315 val = jread32(jme, JME_RXUMA_LO);
316 macaddr[0] = (val >> 0) & 0xFF;
317 macaddr[1] = (val >> 8) & 0xFF;
318 macaddr[2] = (val >> 16) & 0xFF;
319 macaddr[3] = (val >> 24) & 0xFF;
320 val = jread32(jme, JME_RXUMA_HI);
321 macaddr[4] = (val >> 0) & 0xFF;
322 macaddr[5] = (val >> 8) & 0xFF;
323 memcpy(netdev->dev_addr, macaddr, 6);
324 spin_unlock_bh(&jme->macaddr_lock);
325}
326
327static inline void
328jme_set_rx_pcc(struct jme_adapter *jme, int p)
329{
330 switch (p) {
331 case PCC_OFF:
332 jwrite32(jme, JME_PCCRX0,
333 ((PCC_OFF_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
334 ((PCC_OFF_CNT << PCCRX_SHIFT) & PCCRX_MASK));
335 break;
336 case PCC_P1:
337 jwrite32(jme, JME_PCCRX0,
338 ((PCC_P1_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
339 ((PCC_P1_CNT << PCCRX_SHIFT) & PCCRX_MASK));
340 break;
341 case PCC_P2:
342 jwrite32(jme, JME_PCCRX0,
343 ((PCC_P2_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
344 ((PCC_P2_CNT << PCCRX_SHIFT) & PCCRX_MASK));
345 break;
346 case PCC_P3:
347 jwrite32(jme, JME_PCCRX0,
348 ((PCC_P3_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
349 ((PCC_P3_CNT << PCCRX_SHIFT) & PCCRX_MASK));
350 break;
351 default:
352 break;
353 }
354 wmb();
355
356 if (!(test_bit(JME_FLAG_POLL, &jme->flags)))
357 netif_info(jme, rx_status, jme->dev, "Switched to PCC_P%d\n", p);
358}
359
360static void
361jme_start_irq(struct jme_adapter *jme)
362{
363 register struct dynpcc_info *dpi = &(jme->dpi);
364
365 jme_set_rx_pcc(jme, PCC_P1);
366 dpi->cur = PCC_P1;
367 dpi->attempt = PCC_P1;
368 dpi->cnt = 0;
369
370 jwrite32(jme, JME_PCCTX,
371 ((PCC_TX_TO << PCCTXTO_SHIFT) & PCCTXTO_MASK) |
372 ((PCC_TX_CNT << PCCTX_SHIFT) & PCCTX_MASK) |
373 PCCTXQ0_EN
374 );
375
376 /*
377 * Enable Interrupts
378 */
379 jwrite32(jme, JME_IENS, INTR_ENABLE);
380}
381
382static inline void
383jme_stop_irq(struct jme_adapter *jme)
384{
385 /*
386 * Disable Interrupts
387 */
388 jwrite32f(jme, JME_IENC, INTR_ENABLE);
389}
390
391static u32
392jme_linkstat_from_phy(struct jme_adapter *jme)
393{
394 u32 phylink, bmsr;
395
396 phylink = jme_mdio_read(jme->dev, jme->mii_if.phy_id, 17);
397 bmsr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMSR);
398 if (bmsr & BMSR_ANCOMP)
399 phylink |= PHY_LINK_AUTONEG_COMPLETE;
400
401 return phylink;
402}
403
404static inline void
405jme_set_phyfifo_5level(struct jme_adapter *jme)
406{
407 jme_mdio_write(jme->dev, jme->mii_if.phy_id, 27, 0x0004);
408}
409
410static inline void
411jme_set_phyfifo_8level(struct jme_adapter *jme)
412{
413 jme_mdio_write(jme->dev, jme->mii_if.phy_id, 27, 0x0000);
414}
415
416static int
417jme_check_link(struct net_device *netdev, int testonly)
418{
419 struct jme_adapter *jme = netdev_priv(netdev);
420 u32 phylink, cnt = JME_SPDRSV_TIMEOUT, bmcr;
421 char linkmsg[64];
422 int rc = 0;
423
424 linkmsg[0] = '\0';
425
426 if (jme->fpgaver)
427 phylink = jme_linkstat_from_phy(jme);
428 else
429 phylink = jread32(jme, JME_PHY_LINK);
430
431 if (phylink & PHY_LINK_UP) {
432 if (!(phylink & PHY_LINK_AUTONEG_COMPLETE)) {
433 /*
434 * If we did not enable AN
435 * Speed/Duplex Info should be obtained from SMI
436 */
437 phylink = PHY_LINK_UP;
438
439 bmcr = jme_mdio_read(jme->dev,
440 jme->mii_if.phy_id,
441 MII_BMCR);
442
443 phylink |= ((bmcr & BMCR_SPEED1000) &&
444 (bmcr & BMCR_SPEED100) == 0) ?
445 PHY_LINK_SPEED_1000M :
446 (bmcr & BMCR_SPEED100) ?
447 PHY_LINK_SPEED_100M :
448 PHY_LINK_SPEED_10M;
449
450 phylink |= (bmcr & BMCR_FULLDPLX) ?
451 PHY_LINK_DUPLEX : 0;
452
453 strcat(linkmsg, "Forced: ");
454 } else {
455 /*
456 * Keep polling for speed/duplex resolve complete
457 */
458 while (!(phylink & PHY_LINK_SPEEDDPU_RESOLVED) &&
459 --cnt) {
460
461 udelay(1);
462
463 if (jme->fpgaver)
464 phylink = jme_linkstat_from_phy(jme);
465 else
466 phylink = jread32(jme, JME_PHY_LINK);
467 }
468 if (!cnt)
469 pr_err("Waiting speed resolve timeout\n");
470
471 strcat(linkmsg, "ANed: ");
472 }
473
474 if (jme->phylink == phylink) {
475 rc = 1;
476 goto out;
477 }
478 if (testonly)
479 goto out;
480
481 jme->phylink = phylink;
482
483 /*
484 * The speed/duplex setting of jme->reg_ghc already cleared
485 * by jme_reset_mac_processor()
486 */
487 switch (phylink & PHY_LINK_SPEED_MASK) {
488 case PHY_LINK_SPEED_10M:
489 jme->reg_ghc |= GHC_SPEED_10M;
490 strcat(linkmsg, "10 Mbps, ");
491 break;
492 case PHY_LINK_SPEED_100M:
493 jme->reg_ghc |= GHC_SPEED_100M;
494 strcat(linkmsg, "100 Mbps, ");
495 break;
496 case PHY_LINK_SPEED_1000M:
497 jme->reg_ghc |= GHC_SPEED_1000M;
498 strcat(linkmsg, "1000 Mbps, ");
499 break;
500 default:
501 break;
502 }
503
504 if (phylink & PHY_LINK_DUPLEX) {
505 jwrite32(jme, JME_TXMCS, TXMCS_DEFAULT);
506 jwrite32(jme, JME_TXTRHD, TXTRHD_FULLDUPLEX);
507 jme->reg_ghc |= GHC_DPX;
508 } else {
509 jwrite32(jme, JME_TXMCS, TXMCS_DEFAULT |
510 TXMCS_BACKOFF |
511 TXMCS_CARRIERSENSE |
512 TXMCS_COLLISION);
513 jwrite32(jme, JME_TXTRHD, TXTRHD_HALFDUPLEX);
514 }
515
516 jwrite32(jme, JME_GHC, jme->reg_ghc);
517
518 if (is_buggy250(jme->pdev->device, jme->chiprev)) {
519 jme->reg_gpreg1 &= ~(GPREG1_HALFMODEPATCH |
520 GPREG1_RSSPATCH);
521 if (!(phylink & PHY_LINK_DUPLEX))
522 jme->reg_gpreg1 |= GPREG1_HALFMODEPATCH;
523 switch (phylink & PHY_LINK_SPEED_MASK) {
524 case PHY_LINK_SPEED_10M:
525 jme_set_phyfifo_8level(jme);
526 jme->reg_gpreg1 |= GPREG1_RSSPATCH;
527 break;
528 case PHY_LINK_SPEED_100M:
529 jme_set_phyfifo_5level(jme);
530 jme->reg_gpreg1 |= GPREG1_RSSPATCH;
531 break;
532 case PHY_LINK_SPEED_1000M:
533 jme_set_phyfifo_8level(jme);
534 break;
535 default:
536 break;
537 }
538 }
539 jwrite32(jme, JME_GPREG1, jme->reg_gpreg1);
540
541 strcat(linkmsg, (phylink & PHY_LINK_DUPLEX) ?
542 "Full-Duplex, " :
543 "Half-Duplex, ");
544 strcat(linkmsg, (phylink & PHY_LINK_MDI_STAT) ?
545 "MDI-X" :
546 "MDI");
547 netif_info(jme, link, jme->dev, "Link is up at %s\n", linkmsg);
548 netif_carrier_on(netdev);
549 } else {
550 if (testonly)
551 goto out;
552
553 netif_info(jme, link, jme->dev, "Link is down\n");
554 jme->phylink = 0;
555 netif_carrier_off(netdev);
556 }
557
558out:
559 return rc;
560}
561
562static int
563jme_setup_tx_resources(struct jme_adapter *jme)
564{
565 struct jme_ring *txring = &(jme->txring[0]);
566
567 txring->alloc = dma_alloc_coherent(&(jme->pdev->dev),
568 TX_RING_ALLOC_SIZE(jme->tx_ring_size),
569 &(txring->dmaalloc),
570 GFP_ATOMIC);
571
572 if (!txring->alloc)
573 goto err_set_null;
574
575 /*
576 * 16 Bytes align
577 */
578 txring->desc = (void *)ALIGN((unsigned long)(txring->alloc),
579 RING_DESC_ALIGN);
580 txring->dma = ALIGN(txring->dmaalloc, RING_DESC_ALIGN);
581 txring->next_to_use = 0;
582 atomic_set(&txring->next_to_clean, 0);
583 atomic_set(&txring->nr_free, jme->tx_ring_size);
584
585 txring->bufinf = kmalloc(sizeof(struct jme_buffer_info) *
586 jme->tx_ring_size, GFP_ATOMIC);
587 if (unlikely(!(txring->bufinf)))
588 goto err_free_txring;
589
590 /*
591 * Initialize Transmit Descriptors
592 */
593 memset(txring->alloc, 0, TX_RING_ALLOC_SIZE(jme->tx_ring_size));
594 memset(txring->bufinf, 0,
595 sizeof(struct jme_buffer_info) * jme->tx_ring_size);
596
597 return 0;
598
599err_free_txring:
600 dma_free_coherent(&(jme->pdev->dev),
601 TX_RING_ALLOC_SIZE(jme->tx_ring_size),
602 txring->alloc,
603 txring->dmaalloc);
604
605err_set_null:
606 txring->desc = NULL;
607 txring->dmaalloc = 0;
608 txring->dma = 0;
609 txring->bufinf = NULL;
610
611 return -ENOMEM;
612}
613
614static void
615jme_free_tx_resources(struct jme_adapter *jme)
616{
617 int i;
618 struct jme_ring *txring = &(jme->txring[0]);
619 struct jme_buffer_info *txbi;
620
621 if (txring->alloc) {
622 if (txring->bufinf) {
623 for (i = 0 ; i < jme->tx_ring_size ; ++i) {
624 txbi = txring->bufinf + i;
625 if (txbi->skb) {
626 dev_kfree_skb(txbi->skb);
627 txbi->skb = NULL;
628 }
629 txbi->mapping = 0;
630 txbi->len = 0;
631 txbi->nr_desc = 0;
632 txbi->start_xmit = 0;
633 }
634 kfree(txring->bufinf);
635 }
636
637 dma_free_coherent(&(jme->pdev->dev),
638 TX_RING_ALLOC_SIZE(jme->tx_ring_size),
639 txring->alloc,
640 txring->dmaalloc);
641
642 txring->alloc = NULL;
643 txring->desc = NULL;
644 txring->dmaalloc = 0;
645 txring->dma = 0;
646 txring->bufinf = NULL;
647 }
648 txring->next_to_use = 0;
649 atomic_set(&txring->next_to_clean, 0);
650 atomic_set(&txring->nr_free, 0);
651}
652
653static inline void
654jme_enable_tx_engine(struct jme_adapter *jme)
655{
656 /*
657 * Select Queue 0
658 */
659 jwrite32(jme, JME_TXCS, TXCS_DEFAULT | TXCS_SELECT_QUEUE0);
660 wmb();
661
662 /*
663 * Setup TX Queue 0 DMA Bass Address
664 */
665 jwrite32(jme, JME_TXDBA_LO, (__u64)jme->txring[0].dma & 0xFFFFFFFFUL);
666 jwrite32(jme, JME_TXDBA_HI, (__u64)(jme->txring[0].dma) >> 32);
667 jwrite32(jme, JME_TXNDA, (__u64)jme->txring[0].dma & 0xFFFFFFFFUL);
668
669 /*
670 * Setup TX Descptor Count
671 */
672 jwrite32(jme, JME_TXQDC, jme->tx_ring_size);
673
674 /*
675 * Enable TX Engine
676 */
677 wmb();
678 jwrite32f(jme, JME_TXCS, jme->reg_txcs |
679 TXCS_SELECT_QUEUE0 |
680 TXCS_ENABLE);
681
682 /*
683 * Start clock for TX MAC Processor
684 */
685 jme_mac_txclk_on(jme);
686}
687
688static inline void
689jme_restart_tx_engine(struct jme_adapter *jme)
690{
691 /*
692 * Restart TX Engine
693 */
694 jwrite32(jme, JME_TXCS, jme->reg_txcs |
695 TXCS_SELECT_QUEUE0 |
696 TXCS_ENABLE);
697}
698
699static inline void
700jme_disable_tx_engine(struct jme_adapter *jme)
701{
702 int i;
703 u32 val;
704
705 /*
706 * Disable TX Engine
707 */
708 jwrite32(jme, JME_TXCS, jme->reg_txcs | TXCS_SELECT_QUEUE0);
709 wmb();
710
711 val = jread32(jme, JME_TXCS);
712 for (i = JME_TX_DISABLE_TIMEOUT ; (val & TXCS_ENABLE) && i > 0 ; --i) {
713 mdelay(1);
714 val = jread32(jme, JME_TXCS);
715 rmb();
716 }
717
718 if (!i)
719 pr_err("Disable TX engine timeout\n");
720
721 /*
722 * Stop clock for TX MAC Processor
723 */
724 jme_mac_txclk_off(jme);
725}
726
727static void
728jme_set_clean_rxdesc(struct jme_adapter *jme, int i)
729{
730 struct jme_ring *rxring = &(jme->rxring[0]);
731 register struct rxdesc *rxdesc = rxring->desc;
732 struct jme_buffer_info *rxbi = rxring->bufinf;
733 rxdesc += i;
734 rxbi += i;
735
736 rxdesc->dw[0] = 0;
737 rxdesc->dw[1] = 0;
738 rxdesc->desc1.bufaddrh = cpu_to_le32((__u64)rxbi->mapping >> 32);
739 rxdesc->desc1.bufaddrl = cpu_to_le32(
740 (__u64)rxbi->mapping & 0xFFFFFFFFUL);
741 rxdesc->desc1.datalen = cpu_to_le16(rxbi->len);
742 if (jme->dev->features & NETIF_F_HIGHDMA)
743 rxdesc->desc1.flags = RXFLAG_64BIT;
744 wmb();
745 rxdesc->desc1.flags |= RXFLAG_OWN | RXFLAG_INT;
746}
747
748static int
749jme_make_new_rx_buf(struct jme_adapter *jme, int i)
750{
751 struct jme_ring *rxring = &(jme->rxring[0]);
752 struct jme_buffer_info *rxbi = rxring->bufinf + i;
753 struct sk_buff *skb;
754 dma_addr_t mapping;
755
756 skb = netdev_alloc_skb(jme->dev,
757 jme->dev->mtu + RX_EXTRA_LEN);
758 if (unlikely(!skb))
759 return -ENOMEM;
760
761 mapping = pci_map_page(jme->pdev, virt_to_page(skb->data),
762 offset_in_page(skb->data), skb_tailroom(skb),
763 PCI_DMA_FROMDEVICE);
764 if (unlikely(pci_dma_mapping_error(jme->pdev, mapping))) {
765 dev_kfree_skb(skb);
766 return -ENOMEM;
767 }
768
769 if (likely(rxbi->mapping))
770 pci_unmap_page(jme->pdev, rxbi->mapping,
771 rxbi->len, PCI_DMA_FROMDEVICE);
772
773 rxbi->skb = skb;
774 rxbi->len = skb_tailroom(skb);
775 rxbi->mapping = mapping;
776 return 0;
777}
778
779static void
780jme_free_rx_buf(struct jme_adapter *jme, int i)
781{
782 struct jme_ring *rxring = &(jme->rxring[0]);
783 struct jme_buffer_info *rxbi = rxring->bufinf;
784 rxbi += i;
785
786 if (rxbi->skb) {
787 pci_unmap_page(jme->pdev,
788 rxbi->mapping,
789 rxbi->len,
790 PCI_DMA_FROMDEVICE);
791 dev_kfree_skb(rxbi->skb);
792 rxbi->skb = NULL;
793 rxbi->mapping = 0;
794 rxbi->len = 0;
795 }
796}
797
798static void
799jme_free_rx_resources(struct jme_adapter *jme)
800{
801 int i;
802 struct jme_ring *rxring = &(jme->rxring[0]);
803
804 if (rxring->alloc) {
805 if (rxring->bufinf) {
806 for (i = 0 ; i < jme->rx_ring_size ; ++i)
807 jme_free_rx_buf(jme, i);
808 kfree(rxring->bufinf);
809 }
810
811 dma_free_coherent(&(jme->pdev->dev),
812 RX_RING_ALLOC_SIZE(jme->rx_ring_size),
813 rxring->alloc,
814 rxring->dmaalloc);
815 rxring->alloc = NULL;
816 rxring->desc = NULL;
817 rxring->dmaalloc = 0;
818 rxring->dma = 0;
819 rxring->bufinf = NULL;
820 }
821 rxring->next_to_use = 0;
822 atomic_set(&rxring->next_to_clean, 0);
823}
824
825static int
826jme_setup_rx_resources(struct jme_adapter *jme)
827{
828 int i;
829 struct jme_ring *rxring = &(jme->rxring[0]);
830
831 rxring->alloc = dma_alloc_coherent(&(jme->pdev->dev),
832 RX_RING_ALLOC_SIZE(jme->rx_ring_size),
833 &(rxring->dmaalloc),
834 GFP_ATOMIC);
835 if (!rxring->alloc)
836 goto err_set_null;
837
838 /*
839 * 16 Bytes align
840 */
841 rxring->desc = (void *)ALIGN((unsigned long)(rxring->alloc),
842 RING_DESC_ALIGN);
843 rxring->dma = ALIGN(rxring->dmaalloc, RING_DESC_ALIGN);
844 rxring->next_to_use = 0;
845 atomic_set(&rxring->next_to_clean, 0);
846
847 rxring->bufinf = kmalloc(sizeof(struct jme_buffer_info) *
848 jme->rx_ring_size, GFP_ATOMIC);
849 if (unlikely(!(rxring->bufinf)))
850 goto err_free_rxring;
851
852 /*
853 * Initiallize Receive Descriptors
854 */
855 memset(rxring->bufinf, 0,
856 sizeof(struct jme_buffer_info) * jme->rx_ring_size);
857 for (i = 0 ; i < jme->rx_ring_size ; ++i) {
858 if (unlikely(jme_make_new_rx_buf(jme, i))) {
859 jme_free_rx_resources(jme);
860 return -ENOMEM;
861 }
862
863 jme_set_clean_rxdesc(jme, i);
864 }
865
866 return 0;
867
868err_free_rxring:
869 dma_free_coherent(&(jme->pdev->dev),
870 RX_RING_ALLOC_SIZE(jme->rx_ring_size),
871 rxring->alloc,
872 rxring->dmaalloc);
873err_set_null:
874 rxring->desc = NULL;
875 rxring->dmaalloc = 0;
876 rxring->dma = 0;
877 rxring->bufinf = NULL;
878
879 return -ENOMEM;
880}
881
882static inline void
883jme_enable_rx_engine(struct jme_adapter *jme)
884{
885 /*
886 * Select Queue 0
887 */
888 jwrite32(jme, JME_RXCS, jme->reg_rxcs |
889 RXCS_QUEUESEL_Q0);
890 wmb();
891
892 /*
893 * Setup RX DMA Bass Address
894 */
895 jwrite32(jme, JME_RXDBA_LO, (__u64)(jme->rxring[0].dma) & 0xFFFFFFFFUL);
896 jwrite32(jme, JME_RXDBA_HI, (__u64)(jme->rxring[0].dma) >> 32);
897 jwrite32(jme, JME_RXNDA, (__u64)(jme->rxring[0].dma) & 0xFFFFFFFFUL);
898
899 /*
900 * Setup RX Descriptor Count
901 */
902 jwrite32(jme, JME_RXQDC, jme->rx_ring_size);
903
904 /*
905 * Setup Unicast Filter
906 */
907 jme_set_unicastaddr(jme->dev);
908 jme_set_multi(jme->dev);
909
910 /*
911 * Enable RX Engine
912 */
913 wmb();
914 jwrite32f(jme, JME_RXCS, jme->reg_rxcs |
915 RXCS_QUEUESEL_Q0 |
916 RXCS_ENABLE |
917 RXCS_QST);
918
919 /*
920 * Start clock for RX MAC Processor
921 */
922 jme_mac_rxclk_on(jme);
923}
924
925static inline void
926jme_restart_rx_engine(struct jme_adapter *jme)
927{
928 /*
929 * Start RX Engine
930 */
931 jwrite32(jme, JME_RXCS, jme->reg_rxcs |
932 RXCS_QUEUESEL_Q0 |
933 RXCS_ENABLE |
934 RXCS_QST);
935}
936
937static inline void
938jme_disable_rx_engine(struct jme_adapter *jme)
939{
940 int i;
941 u32 val;
942
943 /*
944 * Disable RX Engine
945 */
946 jwrite32(jme, JME_RXCS, jme->reg_rxcs);
947 wmb();
948
949 val = jread32(jme, JME_RXCS);
950 for (i = JME_RX_DISABLE_TIMEOUT ; (val & RXCS_ENABLE) && i > 0 ; --i) {
951 mdelay(1);
952 val = jread32(jme, JME_RXCS);
953 rmb();
954 }
955
956 if (!i)
957 pr_err("Disable RX engine timeout\n");
958
959 /*
960 * Stop clock for RX MAC Processor
961 */
962 jme_mac_rxclk_off(jme);
963}
964
965static u16
966jme_udpsum(struct sk_buff *skb)
967{
968 u16 csum = 0xFFFFu;
969
970 if (skb->len < (ETH_HLEN + sizeof(struct iphdr)))
971 return csum;
972 if (skb->protocol != htons(ETH_P_IP))
973 return csum;
974 skb_set_network_header(skb, ETH_HLEN);
975 if ((ip_hdr(skb)->protocol != IPPROTO_UDP) ||
976 (skb->len < (ETH_HLEN +
977 (ip_hdr(skb)->ihl << 2) +
978 sizeof(struct udphdr)))) {
979 skb_reset_network_header(skb);
980 return csum;
981 }
982 skb_set_transport_header(skb,
983 ETH_HLEN + (ip_hdr(skb)->ihl << 2));
984 csum = udp_hdr(skb)->check;
985 skb_reset_transport_header(skb);
986 skb_reset_network_header(skb);
987
988 return csum;
989}
990
991static int
992jme_rxsum_ok(struct jme_adapter *jme, u16 flags, struct sk_buff *skb)
993{
994 if (!(flags & (RXWBFLAG_TCPON | RXWBFLAG_UDPON | RXWBFLAG_IPV4)))
995 return false;
996
997 if (unlikely((flags & (RXWBFLAG_MF | RXWBFLAG_TCPON | RXWBFLAG_TCPCS))
998 == RXWBFLAG_TCPON)) {
999 if (flags & RXWBFLAG_IPV4)
1000 netif_err(jme, rx_err, jme->dev, "TCP Checksum error\n");
1001 return false;
1002 }
1003
1004 if (unlikely((flags & (RXWBFLAG_MF | RXWBFLAG_UDPON | RXWBFLAG_UDPCS))
1005 == RXWBFLAG_UDPON) && jme_udpsum(skb)) {
1006 if (flags & RXWBFLAG_IPV4)
1007 netif_err(jme, rx_err, jme->dev, "UDP Checksum error\n");
1008 return false;
1009 }
1010
1011 if (unlikely((flags & (RXWBFLAG_IPV4 | RXWBFLAG_IPCS))
1012 == RXWBFLAG_IPV4)) {
1013 netif_err(jme, rx_err, jme->dev, "IPv4 Checksum error\n");
1014 return false;
1015 }
1016
1017 return true;
1018}
1019
1020static void
1021jme_alloc_and_feed_skb(struct jme_adapter *jme, int idx)
1022{
1023 struct jme_ring *rxring = &(jme->rxring[0]);
1024 struct rxdesc *rxdesc = rxring->desc;
1025 struct jme_buffer_info *rxbi = rxring->bufinf;
1026 struct sk_buff *skb;
1027 int framesize;
1028
1029 rxdesc += idx;
1030 rxbi += idx;
1031
1032 skb = rxbi->skb;
1033 pci_dma_sync_single_for_cpu(jme->pdev,
1034 rxbi->mapping,
1035 rxbi->len,
1036 PCI_DMA_FROMDEVICE);
1037
1038 if (unlikely(jme_make_new_rx_buf(jme, idx))) {
1039 pci_dma_sync_single_for_device(jme->pdev,
1040 rxbi->mapping,
1041 rxbi->len,
1042 PCI_DMA_FROMDEVICE);
1043
1044 ++(NET_STAT(jme).rx_dropped);
1045 } else {
1046 framesize = le16_to_cpu(rxdesc->descwb.framesize)
1047 - RX_PREPAD_SIZE;
1048
1049 skb_reserve(skb, RX_PREPAD_SIZE);
1050 skb_put(skb, framesize);
1051 skb->protocol = eth_type_trans(skb, jme->dev);
1052
1053 if (jme_rxsum_ok(jme, le16_to_cpu(rxdesc->descwb.flags), skb))
1054 skb->ip_summed = CHECKSUM_UNNECESSARY;
1055 else
1056 skb_checksum_none_assert(skb);
1057
1058 if (rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_TAGON)) {
1059 u16 vid = le16_to_cpu(rxdesc->descwb.vlan);
1060
1061 __vlan_hwaccel_put_tag(skb, vid);
1062 NET_STAT(jme).rx_bytes += 4;
1063 }
1064 jme->jme_rx(skb);
1065
1066 if ((rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_DEST)) ==
1067 cpu_to_le16(RXWBFLAG_DEST_MUL))
1068 ++(NET_STAT(jme).multicast);
1069
1070 NET_STAT(jme).rx_bytes += framesize;
1071 ++(NET_STAT(jme).rx_packets);
1072 }
1073
1074 jme_set_clean_rxdesc(jme, idx);
1075
1076}
1077
1078static int
1079jme_process_receive(struct jme_adapter *jme, int limit)
1080{
1081 struct jme_ring *rxring = &(jme->rxring[0]);
1082 struct rxdesc *rxdesc = rxring->desc;
1083 int i, j, ccnt, desccnt, mask = jme->rx_ring_mask;
1084
1085 if (unlikely(!atomic_dec_and_test(&jme->rx_cleaning)))
1086 goto out_inc;
1087
1088 if (unlikely(atomic_read(&jme->link_changing) != 1))
1089 goto out_inc;
1090
1091 if (unlikely(!netif_carrier_ok(jme->dev)))
1092 goto out_inc;
1093
1094 i = atomic_read(&rxring->next_to_clean);
1095 while (limit > 0) {
1096 rxdesc = rxring->desc;
1097 rxdesc += i;
1098
1099 if ((rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_OWN)) ||
1100 !(rxdesc->descwb.desccnt & RXWBDCNT_WBCPL))
1101 goto out;
1102 --limit;
1103
1104 rmb();
1105 desccnt = rxdesc->descwb.desccnt & RXWBDCNT_DCNT;
1106
1107 if (unlikely(desccnt > 1 ||
1108 rxdesc->descwb.errstat & RXWBERR_ALLERR)) {
1109
1110 if (rxdesc->descwb.errstat & RXWBERR_CRCERR)
1111 ++(NET_STAT(jme).rx_crc_errors);
1112 else if (rxdesc->descwb.errstat & RXWBERR_OVERUN)
1113 ++(NET_STAT(jme).rx_fifo_errors);
1114 else
1115 ++(NET_STAT(jme).rx_errors);
1116
1117 if (desccnt > 1)
1118 limit -= desccnt - 1;
1119
1120 for (j = i, ccnt = desccnt ; ccnt-- ; ) {
1121 jme_set_clean_rxdesc(jme, j);
1122 j = (j + 1) & (mask);
1123 }
1124
1125 } else {
1126 jme_alloc_and_feed_skb(jme, i);
1127 }
1128
1129 i = (i + desccnt) & (mask);
1130 }
1131
1132out:
1133 atomic_set(&rxring->next_to_clean, i);
1134
1135out_inc:
1136 atomic_inc(&jme->rx_cleaning);
1137
1138 return limit > 0 ? limit : 0;
1139
1140}
1141
1142static void
1143jme_attempt_pcc(struct dynpcc_info *dpi, int atmp)
1144{
1145 if (likely(atmp == dpi->cur)) {
1146 dpi->cnt = 0;
1147 return;
1148 }
1149
1150 if (dpi->attempt == atmp) {
1151 ++(dpi->cnt);
1152 } else {
1153 dpi->attempt = atmp;
1154 dpi->cnt = 0;
1155 }
1156
1157}
1158
1159static void
1160jme_dynamic_pcc(struct jme_adapter *jme)
1161{
1162 register struct dynpcc_info *dpi = &(jme->dpi);
1163
1164 if ((NET_STAT(jme).rx_bytes - dpi->last_bytes) > PCC_P3_THRESHOLD)
1165 jme_attempt_pcc(dpi, PCC_P3);
1166 else if ((NET_STAT(jme).rx_packets - dpi->last_pkts) > PCC_P2_THRESHOLD ||
1167 dpi->intr_cnt > PCC_INTR_THRESHOLD)
1168 jme_attempt_pcc(dpi, PCC_P2);
1169 else
1170 jme_attempt_pcc(dpi, PCC_P1);
1171
1172 if (unlikely(dpi->attempt != dpi->cur && dpi->cnt > 5)) {
1173 if (dpi->attempt < dpi->cur)
1174 tasklet_schedule(&jme->rxclean_task);
1175 jme_set_rx_pcc(jme, dpi->attempt);
1176 dpi->cur = dpi->attempt;
1177 dpi->cnt = 0;
1178 }
1179}
1180
1181static void
1182jme_start_pcc_timer(struct jme_adapter *jme)
1183{
1184 struct dynpcc_info *dpi = &(jme->dpi);
1185 dpi->last_bytes = NET_STAT(jme).rx_bytes;
1186 dpi->last_pkts = NET_STAT(jme).rx_packets;
1187 dpi->intr_cnt = 0;
1188 jwrite32(jme, JME_TMCSR,
1189 TMCSR_EN | ((0xFFFFFF - PCC_INTERVAL_US) & TMCSR_CNT));
1190}
1191
1192static inline void
1193jme_stop_pcc_timer(struct jme_adapter *jme)
1194{
1195 jwrite32(jme, JME_TMCSR, 0);
1196}
1197
1198static void
1199jme_shutdown_nic(struct jme_adapter *jme)
1200{
1201 u32 phylink;
1202
1203 phylink = jme_linkstat_from_phy(jme);
1204
1205 if (!(phylink & PHY_LINK_UP)) {
1206 /*
1207 * Disable all interrupt before issue timer
1208 */
1209 jme_stop_irq(jme);
1210 jwrite32(jme, JME_TIMER2, TMCSR_EN | 0xFFFFFE);
1211 }
1212}
1213
1214static void
1215jme_pcc_tasklet(unsigned long arg)
1216{
1217 struct jme_adapter *jme = (struct jme_adapter *)arg;
1218 struct net_device *netdev = jme->dev;
1219
1220 if (unlikely(test_bit(JME_FLAG_SHUTDOWN, &jme->flags))) {
1221 jme_shutdown_nic(jme);
1222 return;
1223 }
1224
1225 if (unlikely(!netif_carrier_ok(netdev) ||
1226 (atomic_read(&jme->link_changing) != 1)
1227 )) {
1228 jme_stop_pcc_timer(jme);
1229 return;
1230 }
1231
1232 if (!(test_bit(JME_FLAG_POLL, &jme->flags)))
1233 jme_dynamic_pcc(jme);
1234
1235 jme_start_pcc_timer(jme);
1236}
1237
1238static inline void
1239jme_polling_mode(struct jme_adapter *jme)
1240{
1241 jme_set_rx_pcc(jme, PCC_OFF);
1242}
1243
1244static inline void
1245jme_interrupt_mode(struct jme_adapter *jme)
1246{
1247 jme_set_rx_pcc(jme, PCC_P1);
1248}
1249
1250static inline int
1251jme_pseudo_hotplug_enabled(struct jme_adapter *jme)
1252{
1253 u32 apmc;
1254 apmc = jread32(jme, JME_APMC);
1255 return apmc & JME_APMC_PSEUDO_HP_EN;
1256}
1257
1258static void
1259jme_start_shutdown_timer(struct jme_adapter *jme)
1260{
1261 u32 apmc;
1262
1263 apmc = jread32(jme, JME_APMC) | JME_APMC_PCIE_SD_EN;
1264 apmc &= ~JME_APMC_EPIEN_CTRL;
1265 if (!no_extplug) {
1266 jwrite32f(jme, JME_APMC, apmc | JME_APMC_EPIEN_CTRL_EN);
1267 wmb();
1268 }
1269 jwrite32f(jme, JME_APMC, apmc);
1270
1271 jwrite32f(jme, JME_TIMER2, 0);
1272 set_bit(JME_FLAG_SHUTDOWN, &jme->flags);
1273 jwrite32(jme, JME_TMCSR,
1274 TMCSR_EN | ((0xFFFFFF - APMC_PHP_SHUTDOWN_DELAY) & TMCSR_CNT));
1275}
1276
1277static void
1278jme_stop_shutdown_timer(struct jme_adapter *jme)
1279{
1280 u32 apmc;
1281
1282 jwrite32f(jme, JME_TMCSR, 0);
1283 jwrite32f(jme, JME_TIMER2, 0);
1284 clear_bit(JME_FLAG_SHUTDOWN, &jme->flags);
1285
1286 apmc = jread32(jme, JME_APMC);
1287 apmc &= ~(JME_APMC_PCIE_SD_EN | JME_APMC_EPIEN_CTRL);
1288 jwrite32f(jme, JME_APMC, apmc | JME_APMC_EPIEN_CTRL_DIS);
1289 wmb();
1290 jwrite32f(jme, JME_APMC, apmc);
1291}
1292
1293static void
1294jme_link_change_tasklet(unsigned long arg)
1295{
1296 struct jme_adapter *jme = (struct jme_adapter *)arg;
1297 struct net_device *netdev = jme->dev;
1298 int rc;
1299
1300 while (!atomic_dec_and_test(&jme->link_changing)) {
1301 atomic_inc(&jme->link_changing);
1302 netif_info(jme, intr, jme->dev, "Get link change lock failed\n");
1303 while (atomic_read(&jme->link_changing) != 1)
1304 netif_info(jme, intr, jme->dev, "Waiting link change lock\n");
1305 }
1306
1307 if (jme_check_link(netdev, 1) && jme->old_mtu == netdev->mtu)
1308 goto out;
1309
1310 jme->old_mtu = netdev->mtu;
1311 netif_stop_queue(netdev);
1312 if (jme_pseudo_hotplug_enabled(jme))
1313 jme_stop_shutdown_timer(jme);
1314
1315 jme_stop_pcc_timer(jme);
1316 tasklet_disable(&jme->txclean_task);
1317 tasklet_disable(&jme->rxclean_task);
1318 tasklet_disable(&jme->rxempty_task);
1319
1320 if (netif_carrier_ok(netdev)) {
1321 jme_disable_rx_engine(jme);
1322 jme_disable_tx_engine(jme);
1323 jme_reset_mac_processor(jme);
1324 jme_free_rx_resources(jme);
1325 jme_free_tx_resources(jme);
1326
1327 if (test_bit(JME_FLAG_POLL, &jme->flags))
1328 jme_polling_mode(jme);
1329
1330 netif_carrier_off(netdev);
1331 }
1332
1333 jme_check_link(netdev, 0);
1334 if (netif_carrier_ok(netdev)) {
1335 rc = jme_setup_rx_resources(jme);
1336 if (rc) {
1337 pr_err("Allocating resources for RX error, Device STOPPED!\n");
1338 goto out_enable_tasklet;
1339 }
1340
1341 rc = jme_setup_tx_resources(jme);
1342 if (rc) {
1343 pr_err("Allocating resources for TX error, Device STOPPED!\n");
1344 goto err_out_free_rx_resources;
1345 }
1346
1347 jme_enable_rx_engine(jme);
1348 jme_enable_tx_engine(jme);
1349
1350 netif_start_queue(netdev);
1351
1352 if (test_bit(JME_FLAG_POLL, &jme->flags))
1353 jme_interrupt_mode(jme);
1354
1355 jme_start_pcc_timer(jme);
1356 } else if (jme_pseudo_hotplug_enabled(jme)) {
1357 jme_start_shutdown_timer(jme);
1358 }
1359
1360 goto out_enable_tasklet;
1361
1362err_out_free_rx_resources:
1363 jme_free_rx_resources(jme);
1364out_enable_tasklet:
1365 tasklet_enable(&jme->txclean_task);
1366 tasklet_hi_enable(&jme->rxclean_task);
1367 tasklet_hi_enable(&jme->rxempty_task);
1368out:
1369 atomic_inc(&jme->link_changing);
1370}
1371
1372static void
1373jme_rx_clean_tasklet(unsigned long arg)
1374{
1375 struct jme_adapter *jme = (struct jme_adapter *)arg;
1376 struct dynpcc_info *dpi = &(jme->dpi);
1377
1378 jme_process_receive(jme, jme->rx_ring_size);
1379 ++(dpi->intr_cnt);
1380
1381}
1382
1383static int
1384jme_poll(JME_NAPI_HOLDER(holder), JME_NAPI_WEIGHT(budget))
1385{
1386 struct jme_adapter *jme = jme_napi_priv(holder);
1387 int rest;
1388
1389 rest = jme_process_receive(jme, JME_NAPI_WEIGHT_VAL(budget));
1390
1391 while (atomic_read(&jme->rx_empty) > 0) {
1392 atomic_dec(&jme->rx_empty);
1393 ++(NET_STAT(jme).rx_dropped);
1394 jme_restart_rx_engine(jme);
1395 }
1396 atomic_inc(&jme->rx_empty);
1397
1398 if (rest) {
1399 JME_RX_COMPLETE(netdev, holder);
1400 jme_interrupt_mode(jme);
1401 }
1402
1403 JME_NAPI_WEIGHT_SET(budget, rest);
1404 return JME_NAPI_WEIGHT_VAL(budget) - rest;
1405}
1406
1407static void
1408jme_rx_empty_tasklet(unsigned long arg)
1409{
1410 struct jme_adapter *jme = (struct jme_adapter *)arg;
1411
1412 if (unlikely(atomic_read(&jme->link_changing) != 1))
1413 return;
1414
1415 if (unlikely(!netif_carrier_ok(jme->dev)))
1416 return;
1417
1418 netif_info(jme, rx_status, jme->dev, "RX Queue Full!\n");
1419
1420 jme_rx_clean_tasklet(arg);
1421
1422 while (atomic_read(&jme->rx_empty) > 0) {
1423 atomic_dec(&jme->rx_empty);
1424 ++(NET_STAT(jme).rx_dropped);
1425 jme_restart_rx_engine(jme);
1426 }
1427 atomic_inc(&jme->rx_empty);
1428}
1429
1430static void
1431jme_wake_queue_if_stopped(struct jme_adapter *jme)
1432{
1433 struct jme_ring *txring = &(jme->txring[0]);
1434
1435 smp_wmb();
1436 if (unlikely(netif_queue_stopped(jme->dev) &&
1437 atomic_read(&txring->nr_free) >= (jme->tx_wake_threshold))) {
1438 netif_info(jme, tx_done, jme->dev, "TX Queue Waked\n");
1439 netif_wake_queue(jme->dev);
1440 }
1441
1442}
1443
1444static void
1445jme_tx_clean_tasklet(unsigned long arg)
1446{
1447 struct jme_adapter *jme = (struct jme_adapter *)arg;
1448 struct jme_ring *txring = &(jme->txring[0]);
1449 struct txdesc *txdesc = txring->desc;
1450 struct jme_buffer_info *txbi = txring->bufinf, *ctxbi, *ttxbi;
1451 int i, j, cnt = 0, max, err, mask;
1452
1453 tx_dbg(jme, "Into txclean\n");
1454
1455 if (unlikely(!atomic_dec_and_test(&jme->tx_cleaning)))
1456 goto out;
1457
1458 if (unlikely(atomic_read(&jme->link_changing) != 1))
1459 goto out;
1460
1461 if (unlikely(!netif_carrier_ok(jme->dev)))
1462 goto out;
1463
1464 max = jme->tx_ring_size - atomic_read(&txring->nr_free);
1465 mask = jme->tx_ring_mask;
1466
1467 for (i = atomic_read(&txring->next_to_clean) ; cnt < max ; ) {
1468
1469 ctxbi = txbi + i;
1470
1471 if (likely(ctxbi->skb &&
1472 !(txdesc[i].descwb.flags & TXWBFLAG_OWN))) {
1473
1474 tx_dbg(jme, "txclean: %d+%d@%lu\n",
1475 i, ctxbi->nr_desc, jiffies);
1476
1477 err = txdesc[i].descwb.flags & TXWBFLAG_ALLERR;
1478
1479 for (j = 1 ; j < ctxbi->nr_desc ; ++j) {
1480 ttxbi = txbi + ((i + j) & (mask));
1481 txdesc[(i + j) & (mask)].dw[0] = 0;
1482
1483 pci_unmap_page(jme->pdev,
1484 ttxbi->mapping,
1485 ttxbi->len,
1486 PCI_DMA_TODEVICE);
1487
1488 ttxbi->mapping = 0;
1489 ttxbi->len = 0;
1490 }
1491
1492 dev_kfree_skb(ctxbi->skb);
1493
1494 cnt += ctxbi->nr_desc;
1495
1496 if (unlikely(err)) {
1497 ++(NET_STAT(jme).tx_carrier_errors);
1498 } else {
1499 ++(NET_STAT(jme).tx_packets);
1500 NET_STAT(jme).tx_bytes += ctxbi->len;
1501 }
1502
1503 ctxbi->skb = NULL;
1504 ctxbi->len = 0;
1505 ctxbi->start_xmit = 0;
1506
1507 } else {
1508 break;
1509 }
1510
1511 i = (i + ctxbi->nr_desc) & mask;
1512
1513 ctxbi->nr_desc = 0;
1514 }
1515
1516 tx_dbg(jme, "txclean: done %d@%lu\n", i, jiffies);
1517 atomic_set(&txring->next_to_clean, i);
1518 atomic_add(cnt, &txring->nr_free);
1519
1520 jme_wake_queue_if_stopped(jme);
1521
1522out:
1523 atomic_inc(&jme->tx_cleaning);
1524}
1525
1526static void
1527jme_intr_msi(struct jme_adapter *jme, u32 intrstat)
1528{
1529 /*
1530 * Disable interrupt
1531 */
1532 jwrite32f(jme, JME_IENC, INTR_ENABLE);
1533
1534 if (intrstat & (INTR_LINKCH | INTR_SWINTR)) {
1535 /*
1536 * Link change event is critical
1537 * all other events are ignored
1538 */
1539 jwrite32(jme, JME_IEVE, intrstat);
1540 tasklet_schedule(&jme->linkch_task);
1541 goto out_reenable;
1542 }
1543
1544 if (intrstat & INTR_TMINTR) {
1545 jwrite32(jme, JME_IEVE, INTR_TMINTR);
1546 tasklet_schedule(&jme->pcc_task);
1547 }
1548
1549 if (intrstat & (INTR_PCCTXTO | INTR_PCCTX)) {
1550 jwrite32(jme, JME_IEVE, INTR_PCCTXTO | INTR_PCCTX | INTR_TX0);
1551 tasklet_schedule(&jme->txclean_task);
1552 }
1553
1554 if ((intrstat & (INTR_PCCRX0TO | INTR_PCCRX0 | INTR_RX0EMP))) {
1555 jwrite32(jme, JME_IEVE, (intrstat & (INTR_PCCRX0TO |
1556 INTR_PCCRX0 |
1557 INTR_RX0EMP)) |
1558 INTR_RX0);
1559 }
1560
1561 if (test_bit(JME_FLAG_POLL, &jme->flags)) {
1562 if (intrstat & INTR_RX0EMP)
1563 atomic_inc(&jme->rx_empty);
1564
1565 if ((intrstat & (INTR_PCCRX0TO | INTR_PCCRX0 | INTR_RX0EMP))) {
1566 if (likely(JME_RX_SCHEDULE_PREP(jme))) {
1567 jme_polling_mode(jme);
1568 JME_RX_SCHEDULE(jme);
1569 }
1570 }
1571 } else {
1572 if (intrstat & INTR_RX0EMP) {
1573 atomic_inc(&jme->rx_empty);
1574 tasklet_hi_schedule(&jme->rxempty_task);
1575 } else if (intrstat & (INTR_PCCRX0TO | INTR_PCCRX0)) {
1576 tasklet_hi_schedule(&jme->rxclean_task);
1577 }
1578 }
1579
1580out_reenable:
1581 /*
1582 * Re-enable interrupt
1583 */
1584 jwrite32f(jme, JME_IENS, INTR_ENABLE);
1585}
1586
1587static irqreturn_t
1588jme_intr(int irq, void *dev_id)
1589{
1590 struct net_device *netdev = dev_id;
1591 struct jme_adapter *jme = netdev_priv(netdev);
1592 u32 intrstat;
1593
1594 intrstat = jread32(jme, JME_IEVE);
1595
1596 /*
1597 * Check if it's really an interrupt for us
1598 */
1599 if (unlikely((intrstat & INTR_ENABLE) == 0))
1600 return IRQ_NONE;
1601
1602 /*
1603 * Check if the device still exist
1604 */
1605 if (unlikely(intrstat == ~((typeof(intrstat))0)))
1606 return IRQ_NONE;
1607
1608 jme_intr_msi(jme, intrstat);
1609
1610 return IRQ_HANDLED;
1611}
1612
1613static irqreturn_t
1614jme_msi(int irq, void *dev_id)
1615{
1616 struct net_device *netdev = dev_id;
1617 struct jme_adapter *jme = netdev_priv(netdev);
1618 u32 intrstat;
1619
1620 intrstat = jread32(jme, JME_IEVE);
1621
1622 jme_intr_msi(jme, intrstat);
1623
1624 return IRQ_HANDLED;
1625}
1626
1627static void
1628jme_reset_link(struct jme_adapter *jme)
1629{
1630 jwrite32(jme, JME_TMCSR, TMCSR_SWIT);
1631}
1632
1633static void
1634jme_restart_an(struct jme_adapter *jme)
1635{
1636 u32 bmcr;
1637
1638 spin_lock_bh(&jme->phy_lock);
1639 bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1640 bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
1641 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr);
1642 spin_unlock_bh(&jme->phy_lock);
1643}
1644
1645static int
1646jme_request_irq(struct jme_adapter *jme)
1647{
1648 int rc;
1649 struct net_device *netdev = jme->dev;
1650 irq_handler_t handler = jme_intr;
1651 int irq_flags = IRQF_SHARED;
1652
1653 if (!pci_enable_msi(jme->pdev)) {
1654 set_bit(JME_FLAG_MSI, &jme->flags);
1655 handler = jme_msi;
1656 irq_flags = 0;
1657 }
1658
1659 rc = request_irq(jme->pdev->irq, handler, irq_flags, netdev->name,
1660 netdev);
1661 if (rc) {
1662 netdev_err(netdev,
1663 "Unable to request %s interrupt (return: %d)\n",
1664 test_bit(JME_FLAG_MSI, &jme->flags) ? "MSI" : "INTx",
1665 rc);
1666
1667 if (test_bit(JME_FLAG_MSI, &jme->flags)) {
1668 pci_disable_msi(jme->pdev);
1669 clear_bit(JME_FLAG_MSI, &jme->flags);
1670 }
1671 } else {
1672 netdev->irq = jme->pdev->irq;
1673 }
1674
1675 return rc;
1676}
1677
1678static void
1679jme_free_irq(struct jme_adapter *jme)
1680{
1681 free_irq(jme->pdev->irq, jme->dev);
1682 if (test_bit(JME_FLAG_MSI, &jme->flags)) {
1683 pci_disable_msi(jme->pdev);
1684 clear_bit(JME_FLAG_MSI, &jme->flags);
1685 jme->dev->irq = jme->pdev->irq;
1686 }
1687}
1688
1689static inline void
1690jme_new_phy_on(struct jme_adapter *jme)
1691{
1692 u32 reg;
1693
1694 reg = jread32(jme, JME_PHY_PWR);
1695 reg &= ~(PHY_PWR_DWN1SEL | PHY_PWR_DWN1SW |
1696 PHY_PWR_DWN2 | PHY_PWR_CLKSEL);
1697 jwrite32(jme, JME_PHY_PWR, reg);
1698
1699 pci_read_config_dword(jme->pdev, PCI_PRIV_PE1, ®);
1700 reg &= ~PE1_GPREG0_PBG;
1701 reg |= PE1_GPREG0_ENBG;
1702 pci_write_config_dword(jme->pdev, PCI_PRIV_PE1, reg);
1703}
1704
1705static inline void
1706jme_new_phy_off(struct jme_adapter *jme)
1707{
1708 u32 reg;
1709
1710 reg = jread32(jme, JME_PHY_PWR);
1711 reg |= PHY_PWR_DWN1SEL | PHY_PWR_DWN1SW |
1712 PHY_PWR_DWN2 | PHY_PWR_CLKSEL;
1713 jwrite32(jme, JME_PHY_PWR, reg);
1714
1715 pci_read_config_dword(jme->pdev, PCI_PRIV_PE1, ®);
1716 reg &= ~PE1_GPREG0_PBG;
1717 reg |= PE1_GPREG0_PDD3COLD;
1718 pci_write_config_dword(jme->pdev, PCI_PRIV_PE1, reg);
1719}
1720
1721static inline void
1722jme_phy_on(struct jme_adapter *jme)
1723{
1724 u32 bmcr;
1725
1726 bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1727 bmcr &= ~BMCR_PDOWN;
1728 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr);
1729
1730 if (new_phy_power_ctrl(jme->chip_main_rev))
1731 jme_new_phy_on(jme);
1732}
1733
1734static inline void
1735jme_phy_off(struct jme_adapter *jme)
1736{
1737 u32 bmcr;
1738
1739 bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1740 bmcr |= BMCR_PDOWN;
1741 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr);
1742
1743 if (new_phy_power_ctrl(jme->chip_main_rev))
1744 jme_new_phy_off(jme);
1745}
1746
1747static int
1748jme_phy_specreg_read(struct jme_adapter *jme, u32 specreg)
1749{
1750 u32 phy_addr;
1751
1752 phy_addr = JM_PHY_SPEC_REG_READ | specreg;
1753 jme_mdio_write(jme->dev, jme->mii_if.phy_id, JM_PHY_SPEC_ADDR_REG,
1754 phy_addr);
1755 return jme_mdio_read(jme->dev, jme->mii_if.phy_id,
1756 JM_PHY_SPEC_DATA_REG);
1757}
1758
1759static void
1760jme_phy_specreg_write(struct jme_adapter *jme, u32 ext_reg, u32 phy_data)
1761{
1762 u32 phy_addr;
1763
1764 phy_addr = JM_PHY_SPEC_REG_WRITE | ext_reg;
1765 jme_mdio_write(jme->dev, jme->mii_if.phy_id, JM_PHY_SPEC_DATA_REG,
1766 phy_data);
1767 jme_mdio_write(jme->dev, jme->mii_if.phy_id, JM_PHY_SPEC_ADDR_REG,
1768 phy_addr);
1769}
1770
1771static int
1772jme_phy_calibration(struct jme_adapter *jme)
1773{
1774 u32 ctrl1000, phy_data;
1775
1776 jme_phy_off(jme);
1777 jme_phy_on(jme);
1778 /* Enabel PHY test mode 1 */
1779 ctrl1000 = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_CTRL1000);
1780 ctrl1000 &= ~PHY_GAD_TEST_MODE_MSK;
1781 ctrl1000 |= PHY_GAD_TEST_MODE_1;
1782 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_CTRL1000, ctrl1000);
1783
1784 phy_data = jme_phy_specreg_read(jme, JM_PHY_EXT_COMM_2_REG);
1785 phy_data &= ~JM_PHY_EXT_COMM_2_CALI_MODE_0;
1786 phy_data |= JM_PHY_EXT_COMM_2_CALI_LATCH |
1787 JM_PHY_EXT_COMM_2_CALI_ENABLE;
1788 jme_phy_specreg_write(jme, JM_PHY_EXT_COMM_2_REG, phy_data);
1789 msleep(20);
1790 phy_data = jme_phy_specreg_read(jme, JM_PHY_EXT_COMM_2_REG);
1791 phy_data &= ~(JM_PHY_EXT_COMM_2_CALI_ENABLE |
1792 JM_PHY_EXT_COMM_2_CALI_MODE_0 |
1793 JM_PHY_EXT_COMM_2_CALI_LATCH);
1794 jme_phy_specreg_write(jme, JM_PHY_EXT_COMM_2_REG, phy_data);
1795
1796 /* Disable PHY test mode */
1797 ctrl1000 = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_CTRL1000);
1798 ctrl1000 &= ~PHY_GAD_TEST_MODE_MSK;
1799 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_CTRL1000, ctrl1000);
1800 return 0;
1801}
1802
1803static int
1804jme_phy_setEA(struct jme_adapter *jme)
1805{
1806 u32 phy_comm0 = 0, phy_comm1 = 0;
1807 u8 nic_ctrl;
1808
1809 pci_read_config_byte(jme->pdev, PCI_PRIV_SHARE_NICCTRL, &nic_ctrl);
1810 if ((nic_ctrl & 0x3) == JME_FLAG_PHYEA_ENABLE)
1811 return 0;
1812
1813 switch (jme->pdev->device) {
1814 case PCI_DEVICE_ID_JMICRON_JMC250:
1815 if (((jme->chip_main_rev == 5) &&
1816 ((jme->chip_sub_rev == 0) || (jme->chip_sub_rev == 1) ||
1817 (jme->chip_sub_rev == 3))) ||
1818 (jme->chip_main_rev >= 6)) {
1819 phy_comm0 = 0x008A;
1820 phy_comm1 = 0x4109;
1821 }
1822 if ((jme->chip_main_rev == 3) &&
1823 ((jme->chip_sub_rev == 1) || (jme->chip_sub_rev == 2)))
1824 phy_comm0 = 0xE088;
1825 break;
1826 case PCI_DEVICE_ID_JMICRON_JMC260:
1827 if (((jme->chip_main_rev == 5) &&
1828 ((jme->chip_sub_rev == 0) || (jme->chip_sub_rev == 1) ||
1829 (jme->chip_sub_rev == 3))) ||
1830 (jme->chip_main_rev >= 6)) {
1831 phy_comm0 = 0x008A;
1832 phy_comm1 = 0x4109;
1833 }
1834 if ((jme->chip_main_rev == 3) &&
1835 ((jme->chip_sub_rev == 1) || (jme->chip_sub_rev == 2)))
1836 phy_comm0 = 0xE088;
1837 if ((jme->chip_main_rev == 2) && (jme->chip_sub_rev == 0))
1838 phy_comm0 = 0x608A;
1839 if ((jme->chip_main_rev == 2) && (jme->chip_sub_rev == 2))
1840 phy_comm0 = 0x408A;
1841 break;
1842 default:
1843 return -ENODEV;
1844 }
1845 if (phy_comm0)
1846 jme_phy_specreg_write(jme, JM_PHY_EXT_COMM_0_REG, phy_comm0);
1847 if (phy_comm1)
1848 jme_phy_specreg_write(jme, JM_PHY_EXT_COMM_1_REG, phy_comm1);
1849
1850 return 0;
1851}
1852
1853static int
1854jme_open(struct net_device *netdev)
1855{
1856 struct jme_adapter *jme = netdev_priv(netdev);
1857 int rc;
1858
1859 jme_clear_pm(jme);
1860 JME_NAPI_ENABLE(jme);
1861
1862 tasklet_enable(&jme->linkch_task);
1863 tasklet_enable(&jme->txclean_task);
1864 tasklet_hi_enable(&jme->rxclean_task);
1865 tasklet_hi_enable(&jme->rxempty_task);
1866
1867 rc = jme_request_irq(jme);
1868 if (rc)
1869 goto err_out;
1870
1871 jme_start_irq(jme);
1872
1873 jme_phy_on(jme);
1874 if (test_bit(JME_FLAG_SSET, &jme->flags))
1875 jme_set_settings(netdev, &jme->old_ecmd);
1876 else
1877 jme_reset_phy_processor(jme);
1878 jme_phy_calibration(jme);
1879 jme_phy_setEA(jme);
1880 jme_reset_link(jme);
1881
1882 return 0;
1883
1884err_out:
1885 netif_stop_queue(netdev);
1886 netif_carrier_off(netdev);
1887 return rc;
1888}
1889
1890static void
1891jme_set_100m_half(struct jme_adapter *jme)
1892{
1893 u32 bmcr, tmp;
1894
1895 jme_phy_on(jme);
1896 bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1897 tmp = bmcr & ~(BMCR_ANENABLE | BMCR_SPEED100 |
1898 BMCR_SPEED1000 | BMCR_FULLDPLX);
1899 tmp |= BMCR_SPEED100;
1900
1901 if (bmcr != tmp)
1902 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, tmp);
1903
1904 if (jme->fpgaver)
1905 jwrite32(jme, JME_GHC, GHC_SPEED_100M | GHC_LINK_POLL);
1906 else
1907 jwrite32(jme, JME_GHC, GHC_SPEED_100M);
1908}
1909
1910#define JME_WAIT_LINK_TIME 2000 /* 2000ms */
1911static void
1912jme_wait_link(struct jme_adapter *jme)
1913{
1914 u32 phylink, to = JME_WAIT_LINK_TIME;
1915
1916 mdelay(1000);
1917 phylink = jme_linkstat_from_phy(jme);
1918 while (!(phylink & PHY_LINK_UP) && (to -= 10) > 0) {
1919 mdelay(10);
1920 phylink = jme_linkstat_from_phy(jme);
1921 }
1922}
1923
1924static void
1925jme_powersave_phy(struct jme_adapter *jme)
1926{
1927 if (jme->reg_pmcs) {
1928 jme_set_100m_half(jme);
1929 if (jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN))
1930 jme_wait_link(jme);
1931 jme_clear_pm(jme);
1932 } else {
1933 jme_phy_off(jme);
1934 }
1935}
1936
1937static int
1938jme_close(struct net_device *netdev)
1939{
1940 struct jme_adapter *jme = netdev_priv(netdev);
1941
1942 netif_stop_queue(netdev);
1943 netif_carrier_off(netdev);
1944
1945 jme_stop_irq(jme);
1946 jme_free_irq(jme);
1947
1948 JME_NAPI_DISABLE(jme);
1949
1950 tasklet_disable(&jme->linkch_task);
1951 tasklet_disable(&jme->txclean_task);
1952 tasklet_disable(&jme->rxclean_task);
1953 tasklet_disable(&jme->rxempty_task);
1954
1955 jme_disable_rx_engine(jme);
1956 jme_disable_tx_engine(jme);
1957 jme_reset_mac_processor(jme);
1958 jme_free_rx_resources(jme);
1959 jme_free_tx_resources(jme);
1960 jme->phylink = 0;
1961 jme_phy_off(jme);
1962
1963 return 0;
1964}
1965
1966static int
1967jme_alloc_txdesc(struct jme_adapter *jme,
1968 struct sk_buff *skb)
1969{
1970 struct jme_ring *txring = &(jme->txring[0]);
1971 int idx, nr_alloc, mask = jme->tx_ring_mask;
1972
1973 idx = txring->next_to_use;
1974 nr_alloc = skb_shinfo(skb)->nr_frags + 2;
1975
1976 if (unlikely(atomic_read(&txring->nr_free) < nr_alloc))
1977 return -1;
1978
1979 atomic_sub(nr_alloc, &txring->nr_free);
1980
1981 txring->next_to_use = (txring->next_to_use + nr_alloc) & mask;
1982
1983 return idx;
1984}
1985
1986static void
1987jme_fill_tx_map(struct pci_dev *pdev,
1988 struct txdesc *txdesc,
1989 struct jme_buffer_info *txbi,
1990 struct page *page,
1991 u32 page_offset,
1992 u32 len,
1993 bool hidma)
1994{
1995 dma_addr_t dmaaddr;
1996
1997 dmaaddr = pci_map_page(pdev,
1998 page,
1999 page_offset,
2000 len,
2001 PCI_DMA_TODEVICE);
2002
2003 pci_dma_sync_single_for_device(pdev,
2004 dmaaddr,
2005 len,
2006 PCI_DMA_TODEVICE);
2007
2008 txdesc->dw[0] = 0;
2009 txdesc->dw[1] = 0;
2010 txdesc->desc2.flags = TXFLAG_OWN;
2011 txdesc->desc2.flags |= (hidma) ? TXFLAG_64BIT : 0;
2012 txdesc->desc2.datalen = cpu_to_le16(len);
2013 txdesc->desc2.bufaddrh = cpu_to_le32((__u64)dmaaddr >> 32);
2014 txdesc->desc2.bufaddrl = cpu_to_le32(
2015 (__u64)dmaaddr & 0xFFFFFFFFUL);
2016
2017 txbi->mapping = dmaaddr;
2018 txbi->len = len;
2019}
2020
2021static void
2022jme_map_tx_skb(struct jme_adapter *jme, struct sk_buff *skb, int idx)
2023{
2024 struct jme_ring *txring = &(jme->txring[0]);
2025 struct txdesc *txdesc = txring->desc, *ctxdesc;
2026 struct jme_buffer_info *txbi = txring->bufinf, *ctxbi;
2027 bool hidma = jme->dev->features & NETIF_F_HIGHDMA;
2028 int i, nr_frags = skb_shinfo(skb)->nr_frags;
2029 int mask = jme->tx_ring_mask;
2030 const struct skb_frag_struct *frag;
2031 u32 len;
2032
2033 for (i = 0 ; i < nr_frags ; ++i) {
2034 frag = &skb_shinfo(skb)->frags[i];
2035 ctxdesc = txdesc + ((idx + i + 2) & (mask));
2036 ctxbi = txbi + ((idx + i + 2) & (mask));
2037
2038 jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi,
2039 skb_frag_page(frag),
2040 frag->page_offset, skb_frag_size(frag), hidma);
2041 }
2042
2043 len = skb_is_nonlinear(skb) ? skb_headlen(skb) : skb->len;
2044 ctxdesc = txdesc + ((idx + 1) & (mask));
2045 ctxbi = txbi + ((idx + 1) & (mask));
2046 jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi, virt_to_page(skb->data),
2047 offset_in_page(skb->data), len, hidma);
2048
2049}
2050
2051static int
2052jme_expand_header(struct jme_adapter *jme, struct sk_buff *skb)
2053{
2054 if (unlikely(skb_shinfo(skb)->gso_size &&
2055 skb_header_cloned(skb) &&
2056 pskb_expand_head(skb, 0, 0, GFP_ATOMIC))) {
2057 dev_kfree_skb(skb);
2058 return -1;
2059 }
2060
2061 return 0;
2062}
2063
2064static int
2065jme_tx_tso(struct sk_buff *skb, __le16 *mss, u8 *flags)
2066{
2067 *mss = cpu_to_le16(skb_shinfo(skb)->gso_size << TXDESC_MSS_SHIFT);
2068 if (*mss) {
2069 *flags |= TXFLAG_LSEN;
2070
2071 if (skb->protocol == htons(ETH_P_IP)) {
2072 struct iphdr *iph = ip_hdr(skb);
2073
2074 iph->check = 0;
2075 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
2076 iph->daddr, 0,
2077 IPPROTO_TCP,
2078 0);
2079 } else {
2080 struct ipv6hdr *ip6h = ipv6_hdr(skb);
2081
2082 tcp_hdr(skb)->check = ~csum_ipv6_magic(&ip6h->saddr,
2083 &ip6h->daddr, 0,
2084 IPPROTO_TCP,
2085 0);
2086 }
2087
2088 return 0;
2089 }
2090
2091 return 1;
2092}
2093
2094static void
2095jme_tx_csum(struct jme_adapter *jme, struct sk_buff *skb, u8 *flags)
2096{
2097 if (skb->ip_summed == CHECKSUM_PARTIAL) {
2098 u8 ip_proto;
2099
2100 switch (skb->protocol) {
2101 case htons(ETH_P_IP):
2102 ip_proto = ip_hdr(skb)->protocol;
2103 break;
2104 case htons(ETH_P_IPV6):
2105 ip_proto = ipv6_hdr(skb)->nexthdr;
2106 break;
2107 default:
2108 ip_proto = 0;
2109 break;
2110 }
2111
2112 switch (ip_proto) {
2113 case IPPROTO_TCP:
2114 *flags |= TXFLAG_TCPCS;
2115 break;
2116 case IPPROTO_UDP:
2117 *flags |= TXFLAG_UDPCS;
2118 break;
2119 default:
2120 netif_err(jme, tx_err, jme->dev, "Error upper layer protocol\n");
2121 break;
2122 }
2123 }
2124}
2125
2126static inline void
2127jme_tx_vlan(struct sk_buff *skb, __le16 *vlan, u8 *flags)
2128{
2129 if (vlan_tx_tag_present(skb)) {
2130 *flags |= TXFLAG_TAGON;
2131 *vlan = cpu_to_le16(vlan_tx_tag_get(skb));
2132 }
2133}
2134
2135static int
2136jme_fill_tx_desc(struct jme_adapter *jme, struct sk_buff *skb, int idx)
2137{
2138 struct jme_ring *txring = &(jme->txring[0]);
2139 struct txdesc *txdesc;
2140 struct jme_buffer_info *txbi;
2141 u8 flags;
2142
2143 txdesc = (struct txdesc *)txring->desc + idx;
2144 txbi = txring->bufinf + idx;
2145
2146 txdesc->dw[0] = 0;
2147 txdesc->dw[1] = 0;
2148 txdesc->dw[2] = 0;
2149 txdesc->dw[3] = 0;
2150 txdesc->desc1.pktsize = cpu_to_le16(skb->len);
2151 /*
2152 * Set OWN bit at final.
2153 * When kernel transmit faster than NIC.
2154 * And NIC trying to send this descriptor before we tell
2155 * it to start sending this TX queue.
2156 * Other fields are already filled correctly.
2157 */
2158 wmb();
2159 flags = TXFLAG_OWN | TXFLAG_INT;
2160 /*
2161 * Set checksum flags while not tso
2162 */
2163 if (jme_tx_tso(skb, &txdesc->desc1.mss, &flags))
2164 jme_tx_csum(jme, skb, &flags);
2165 jme_tx_vlan(skb, &txdesc->desc1.vlan, &flags);
2166 jme_map_tx_skb(jme, skb, idx);
2167 txdesc->desc1.flags = flags;
2168 /*
2169 * Set tx buffer info after telling NIC to send
2170 * For better tx_clean timing
2171 */
2172 wmb();
2173 txbi->nr_desc = skb_shinfo(skb)->nr_frags + 2;
2174 txbi->skb = skb;
2175 txbi->len = skb->len;
2176 txbi->start_xmit = jiffies;
2177 if (!txbi->start_xmit)
2178 txbi->start_xmit = (0UL-1);
2179
2180 return 0;
2181}
2182
2183static void
2184jme_stop_queue_if_full(struct jme_adapter *jme)
2185{
2186 struct jme_ring *txring = &(jme->txring[0]);
2187 struct jme_buffer_info *txbi = txring->bufinf;
2188 int idx = atomic_read(&txring->next_to_clean);
2189
2190 txbi += idx;
2191
2192 smp_wmb();
2193 if (unlikely(atomic_read(&txring->nr_free) < (MAX_SKB_FRAGS+2))) {
2194 netif_stop_queue(jme->dev);
2195 netif_info(jme, tx_queued, jme->dev, "TX Queue Paused\n");
2196 smp_wmb();
2197 if (atomic_read(&txring->nr_free)
2198 >= (jme->tx_wake_threshold)) {
2199 netif_wake_queue(jme->dev);
2200 netif_info(jme, tx_queued, jme->dev, "TX Queue Fast Waked\n");
2201 }
2202 }
2203
2204 if (unlikely(txbi->start_xmit &&
2205 (jiffies - txbi->start_xmit) >= TX_TIMEOUT &&
2206 txbi->skb)) {
2207 netif_stop_queue(jme->dev);
2208 netif_info(jme, tx_queued, jme->dev,
2209 "TX Queue Stopped %d@%lu\n", idx, jiffies);
2210 }
2211}
2212
2213/*
2214 * This function is already protected by netif_tx_lock()
2215 */
2216
2217static netdev_tx_t
2218jme_start_xmit(struct sk_buff *skb, struct net_device *netdev)
2219{
2220 struct jme_adapter *jme = netdev_priv(netdev);
2221 int idx;
2222
2223 if (unlikely(jme_expand_header(jme, skb))) {
2224 ++(NET_STAT(jme).tx_dropped);
2225 return NETDEV_TX_OK;
2226 }
2227
2228 idx = jme_alloc_txdesc(jme, skb);
2229
2230 if (unlikely(idx < 0)) {
2231 netif_stop_queue(netdev);
2232 netif_err(jme, tx_err, jme->dev,
2233 "BUG! Tx ring full when queue awake!\n");
2234
2235 return NETDEV_TX_BUSY;
2236 }
2237
2238 jme_fill_tx_desc(jme, skb, idx);
2239
2240 jwrite32(jme, JME_TXCS, jme->reg_txcs |
2241 TXCS_SELECT_QUEUE0 |
2242 TXCS_QUEUE0S |
2243 TXCS_ENABLE);
2244
2245 tx_dbg(jme, "xmit: %d+%d@%lu\n",
2246 idx, skb_shinfo(skb)->nr_frags + 2, jiffies);
2247 jme_stop_queue_if_full(jme);
2248
2249 return NETDEV_TX_OK;
2250}
2251
2252static void
2253jme_set_unicastaddr(struct net_device *netdev)
2254{
2255 struct jme_adapter *jme = netdev_priv(netdev);
2256 u32 val;
2257
2258 val = (netdev->dev_addr[3] & 0xff) << 24 |
2259 (netdev->dev_addr[2] & 0xff) << 16 |
2260 (netdev->dev_addr[1] & 0xff) << 8 |
2261 (netdev->dev_addr[0] & 0xff);
2262 jwrite32(jme, JME_RXUMA_LO, val);
2263 val = (netdev->dev_addr[5] & 0xff) << 8 |
2264 (netdev->dev_addr[4] & 0xff);
2265 jwrite32(jme, JME_RXUMA_HI, val);
2266}
2267
2268static int
2269jme_set_macaddr(struct net_device *netdev, void *p)
2270{
2271 struct jme_adapter *jme = netdev_priv(netdev);
2272 struct sockaddr *addr = p;
2273
2274 if (netif_running(netdev))
2275 return -EBUSY;
2276
2277 spin_lock_bh(&jme->macaddr_lock);
2278 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
2279 jme_set_unicastaddr(netdev);
2280 spin_unlock_bh(&jme->macaddr_lock);
2281
2282 return 0;
2283}
2284
2285static void
2286jme_set_multi(struct net_device *netdev)
2287{
2288 struct jme_adapter *jme = netdev_priv(netdev);
2289 u32 mc_hash[2] = {};
2290
2291 spin_lock_bh(&jme->rxmcs_lock);
2292
2293 jme->reg_rxmcs |= RXMCS_BRDFRAME | RXMCS_UNIFRAME;
2294
2295 if (netdev->flags & IFF_PROMISC) {
2296 jme->reg_rxmcs |= RXMCS_ALLFRAME;
2297 } else if (netdev->flags & IFF_ALLMULTI) {
2298 jme->reg_rxmcs |= RXMCS_ALLMULFRAME;
2299 } else if (netdev->flags & IFF_MULTICAST) {
2300 struct netdev_hw_addr *ha;
2301 int bit_nr;
2302
2303 jme->reg_rxmcs |= RXMCS_MULFRAME | RXMCS_MULFILTERED;
2304 netdev_for_each_mc_addr(ha, netdev) {
2305 bit_nr = ether_crc(ETH_ALEN, ha->addr) & 0x3F;
2306 mc_hash[bit_nr >> 5] |= 1 << (bit_nr & 0x1F);
2307 }
2308
2309 jwrite32(jme, JME_RXMCHT_LO, mc_hash[0]);
2310 jwrite32(jme, JME_RXMCHT_HI, mc_hash[1]);
2311 }
2312
2313 wmb();
2314 jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2315
2316 spin_unlock_bh(&jme->rxmcs_lock);
2317}
2318
2319static int
2320jme_change_mtu(struct net_device *netdev, int new_mtu)
2321{
2322 struct jme_adapter *jme = netdev_priv(netdev);
2323
2324 if (new_mtu == jme->old_mtu)
2325 return 0;
2326
2327 if (((new_mtu + ETH_HLEN) > MAX_ETHERNET_JUMBO_PACKET_SIZE) ||
2328 ((new_mtu) < IPV6_MIN_MTU))
2329 return -EINVAL;
2330
2331
2332 netdev->mtu = new_mtu;
2333 netdev_update_features(netdev);
2334
2335 jme_restart_rx_engine(jme);
2336 jme_reset_link(jme);
2337
2338 return 0;
2339}
2340
2341static void
2342jme_tx_timeout(struct net_device *netdev)
2343{
2344 struct jme_adapter *jme = netdev_priv(netdev);
2345
2346 jme->phylink = 0;
2347 jme_reset_phy_processor(jme);
2348 if (test_bit(JME_FLAG_SSET, &jme->flags))
2349 jme_set_settings(netdev, &jme->old_ecmd);
2350
2351 /*
2352 * Force to Reset the link again
2353 */
2354 jme_reset_link(jme);
2355}
2356
2357static inline void jme_pause_rx(struct jme_adapter *jme)
2358{
2359 atomic_dec(&jme->link_changing);
2360
2361 jme_set_rx_pcc(jme, PCC_OFF);
2362 if (test_bit(JME_FLAG_POLL, &jme->flags)) {
2363 JME_NAPI_DISABLE(jme);
2364 } else {
2365 tasklet_disable(&jme->rxclean_task);
2366 tasklet_disable(&jme->rxempty_task);
2367 }
2368}
2369
2370static inline void jme_resume_rx(struct jme_adapter *jme)
2371{
2372 struct dynpcc_info *dpi = &(jme->dpi);
2373
2374 if (test_bit(JME_FLAG_POLL, &jme->flags)) {
2375 JME_NAPI_ENABLE(jme);
2376 } else {
2377 tasklet_hi_enable(&jme->rxclean_task);
2378 tasklet_hi_enable(&jme->rxempty_task);
2379 }
2380 dpi->cur = PCC_P1;
2381 dpi->attempt = PCC_P1;
2382 dpi->cnt = 0;
2383 jme_set_rx_pcc(jme, PCC_P1);
2384
2385 atomic_inc(&jme->link_changing);
2386}
2387
2388static void
2389jme_get_drvinfo(struct net_device *netdev,
2390 struct ethtool_drvinfo *info)
2391{
2392 struct jme_adapter *jme = netdev_priv(netdev);
2393
2394 strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
2395 strlcpy(info->version, DRV_VERSION, sizeof(info->version));
2396 strlcpy(info->bus_info, pci_name(jme->pdev), sizeof(info->bus_info));
2397}
2398
2399static int
2400jme_get_regs_len(struct net_device *netdev)
2401{
2402 return JME_REG_LEN;
2403}
2404
2405static void
2406mmapio_memcpy(struct jme_adapter *jme, u32 *p, u32 reg, int len)
2407{
2408 int i;
2409
2410 for (i = 0 ; i < len ; i += 4)
2411 p[i >> 2] = jread32(jme, reg + i);
2412}
2413
2414static void
2415mdio_memcpy(struct jme_adapter *jme, u32 *p, int reg_nr)
2416{
2417 int i;
2418 u16 *p16 = (u16 *)p;
2419
2420 for (i = 0 ; i < reg_nr ; ++i)
2421 p16[i] = jme_mdio_read(jme->dev, jme->mii_if.phy_id, i);
2422}
2423
2424static void
2425jme_get_regs(struct net_device *netdev, struct ethtool_regs *regs, void *p)
2426{
2427 struct jme_adapter *jme = netdev_priv(netdev);
2428 u32 *p32 = (u32 *)p;
2429
2430 memset(p, 0xFF, JME_REG_LEN);
2431
2432 regs->version = 1;
2433 mmapio_memcpy(jme, p32, JME_MAC, JME_MAC_LEN);
2434
2435 p32 += 0x100 >> 2;
2436 mmapio_memcpy(jme, p32, JME_PHY, JME_PHY_LEN);
2437
2438 p32 += 0x100 >> 2;
2439 mmapio_memcpy(jme, p32, JME_MISC, JME_MISC_LEN);
2440
2441 p32 += 0x100 >> 2;
2442 mmapio_memcpy(jme, p32, JME_RSS, JME_RSS_LEN);
2443
2444 p32 += 0x100 >> 2;
2445 mdio_memcpy(jme, p32, JME_PHY_REG_NR);
2446}
2447
2448static int
2449jme_get_coalesce(struct net_device *netdev, struct ethtool_coalesce *ecmd)
2450{
2451 struct jme_adapter *jme = netdev_priv(netdev);
2452
2453 ecmd->tx_coalesce_usecs = PCC_TX_TO;
2454 ecmd->tx_max_coalesced_frames = PCC_TX_CNT;
2455
2456 if (test_bit(JME_FLAG_POLL, &jme->flags)) {
2457 ecmd->use_adaptive_rx_coalesce = false;
2458 ecmd->rx_coalesce_usecs = 0;
2459 ecmd->rx_max_coalesced_frames = 0;
2460 return 0;
2461 }
2462
2463 ecmd->use_adaptive_rx_coalesce = true;
2464
2465 switch (jme->dpi.cur) {
2466 case PCC_P1:
2467 ecmd->rx_coalesce_usecs = PCC_P1_TO;
2468 ecmd->rx_max_coalesced_frames = PCC_P1_CNT;
2469 break;
2470 case PCC_P2:
2471 ecmd->rx_coalesce_usecs = PCC_P2_TO;
2472 ecmd->rx_max_coalesced_frames = PCC_P2_CNT;
2473 break;
2474 case PCC_P3:
2475 ecmd->rx_coalesce_usecs = PCC_P3_TO;
2476 ecmd->rx_max_coalesced_frames = PCC_P3_CNT;
2477 break;
2478 default:
2479 break;
2480 }
2481
2482 return 0;
2483}
2484
2485static int
2486jme_set_coalesce(struct net_device *netdev, struct ethtool_coalesce *ecmd)
2487{
2488 struct jme_adapter *jme = netdev_priv(netdev);
2489 struct dynpcc_info *dpi = &(jme->dpi);
2490
2491 if (netif_running(netdev))
2492 return -EBUSY;
2493
2494 if (ecmd->use_adaptive_rx_coalesce &&
2495 test_bit(JME_FLAG_POLL, &jme->flags)) {
2496 clear_bit(JME_FLAG_POLL, &jme->flags);
2497 jme->jme_rx = netif_rx;
2498 dpi->cur = PCC_P1;
2499 dpi->attempt = PCC_P1;
2500 dpi->cnt = 0;
2501 jme_set_rx_pcc(jme, PCC_P1);
2502 jme_interrupt_mode(jme);
2503 } else if (!(ecmd->use_adaptive_rx_coalesce) &&
2504 !(test_bit(JME_FLAG_POLL, &jme->flags))) {
2505 set_bit(JME_FLAG_POLL, &jme->flags);
2506 jme->jme_rx = netif_receive_skb;
2507 jme_interrupt_mode(jme);
2508 }
2509
2510 return 0;
2511}
2512
2513static void
2514jme_get_pauseparam(struct net_device *netdev,
2515 struct ethtool_pauseparam *ecmd)
2516{
2517 struct jme_adapter *jme = netdev_priv(netdev);
2518 u32 val;
2519
2520 ecmd->tx_pause = (jme->reg_txpfc & TXPFC_PF_EN) != 0;
2521 ecmd->rx_pause = (jme->reg_rxmcs & RXMCS_FLOWCTRL) != 0;
2522
2523 spin_lock_bh(&jme->phy_lock);
2524 val = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_ADVERTISE);
2525 spin_unlock_bh(&jme->phy_lock);
2526
2527 ecmd->autoneg =
2528 (val & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) != 0;
2529}
2530
2531static int
2532jme_set_pauseparam(struct net_device *netdev,
2533 struct ethtool_pauseparam *ecmd)
2534{
2535 struct jme_adapter *jme = netdev_priv(netdev);
2536 u32 val;
2537
2538 if (((jme->reg_txpfc & TXPFC_PF_EN) != 0) ^
2539 (ecmd->tx_pause != 0)) {
2540
2541 if (ecmd->tx_pause)
2542 jme->reg_txpfc |= TXPFC_PF_EN;
2543 else
2544 jme->reg_txpfc &= ~TXPFC_PF_EN;
2545
2546 jwrite32(jme, JME_TXPFC, jme->reg_txpfc);
2547 }
2548
2549 spin_lock_bh(&jme->rxmcs_lock);
2550 if (((jme->reg_rxmcs & RXMCS_FLOWCTRL) != 0) ^
2551 (ecmd->rx_pause != 0)) {
2552
2553 if (ecmd->rx_pause)
2554 jme->reg_rxmcs |= RXMCS_FLOWCTRL;
2555 else
2556 jme->reg_rxmcs &= ~RXMCS_FLOWCTRL;
2557
2558 jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2559 }
2560 spin_unlock_bh(&jme->rxmcs_lock);
2561
2562 spin_lock_bh(&jme->phy_lock);
2563 val = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_ADVERTISE);
2564 if (((val & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) != 0) ^
2565 (ecmd->autoneg != 0)) {
2566
2567 if (ecmd->autoneg)
2568 val |= (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
2569 else
2570 val &= ~(ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
2571
2572 jme_mdio_write(jme->dev, jme->mii_if.phy_id,
2573 MII_ADVERTISE, val);
2574 }
2575 spin_unlock_bh(&jme->phy_lock);
2576
2577 return 0;
2578}
2579
2580static void
2581jme_get_wol(struct net_device *netdev,
2582 struct ethtool_wolinfo *wol)
2583{
2584 struct jme_adapter *jme = netdev_priv(netdev);
2585
2586 wol->supported = WAKE_MAGIC | WAKE_PHY;
2587
2588 wol->wolopts = 0;
2589
2590 if (jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN))
2591 wol->wolopts |= WAKE_PHY;
2592
2593 if (jme->reg_pmcs & PMCS_MFEN)
2594 wol->wolopts |= WAKE_MAGIC;
2595
2596}
2597
2598static int
2599jme_set_wol(struct net_device *netdev,
2600 struct ethtool_wolinfo *wol)
2601{
2602 struct jme_adapter *jme = netdev_priv(netdev);
2603
2604 if (wol->wolopts & (WAKE_MAGICSECURE |
2605 WAKE_UCAST |
2606 WAKE_MCAST |
2607 WAKE_BCAST |
2608 WAKE_ARP))
2609 return -EOPNOTSUPP;
2610
2611 jme->reg_pmcs = 0;
2612
2613 if (wol->wolopts & WAKE_PHY)
2614 jme->reg_pmcs |= PMCS_LFEN | PMCS_LREN;
2615
2616 if (wol->wolopts & WAKE_MAGIC)
2617 jme->reg_pmcs |= PMCS_MFEN;
2618
2619 jwrite32(jme, JME_PMCS, jme->reg_pmcs);
2620 device_set_wakeup_enable(&jme->pdev->dev, !!(jme->reg_pmcs));
2621
2622 return 0;
2623}
2624
2625static int
2626jme_get_settings(struct net_device *netdev,
2627 struct ethtool_cmd *ecmd)
2628{
2629 struct jme_adapter *jme = netdev_priv(netdev);
2630 int rc;
2631
2632 spin_lock_bh(&jme->phy_lock);
2633 rc = mii_ethtool_gset(&(jme->mii_if), ecmd);
2634 spin_unlock_bh(&jme->phy_lock);
2635 return rc;
2636}
2637
2638static int
2639jme_set_settings(struct net_device *netdev,
2640 struct ethtool_cmd *ecmd)
2641{
2642 struct jme_adapter *jme = netdev_priv(netdev);
2643 int rc, fdc = 0;
2644
2645 if (ethtool_cmd_speed(ecmd) == SPEED_1000
2646 && ecmd->autoneg != AUTONEG_ENABLE)
2647 return -EINVAL;
2648
2649 /*
2650 * Check If user changed duplex only while force_media.
2651 * Hardware would not generate link change interrupt.
2652 */
2653 if (jme->mii_if.force_media &&
2654 ecmd->autoneg != AUTONEG_ENABLE &&
2655 (jme->mii_if.full_duplex != ecmd->duplex))
2656 fdc = 1;
2657
2658 spin_lock_bh(&jme->phy_lock);
2659 rc = mii_ethtool_sset(&(jme->mii_if), ecmd);
2660 spin_unlock_bh(&jme->phy_lock);
2661
2662 if (!rc) {
2663 if (fdc)
2664 jme_reset_link(jme);
2665 jme->old_ecmd = *ecmd;
2666 set_bit(JME_FLAG_SSET, &jme->flags);
2667 }
2668
2669 return rc;
2670}
2671
2672static int
2673jme_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd)
2674{
2675 int rc;
2676 struct jme_adapter *jme = netdev_priv(netdev);
2677 struct mii_ioctl_data *mii_data = if_mii(rq);
2678 unsigned int duplex_chg;
2679
2680 if (cmd == SIOCSMIIREG) {
2681 u16 val = mii_data->val_in;
2682 if (!(val & (BMCR_RESET|BMCR_ANENABLE)) &&
2683 (val & BMCR_SPEED1000))
2684 return -EINVAL;
2685 }
2686
2687 spin_lock_bh(&jme->phy_lock);
2688 rc = generic_mii_ioctl(&jme->mii_if, mii_data, cmd, &duplex_chg);
2689 spin_unlock_bh(&jme->phy_lock);
2690
2691 if (!rc && (cmd == SIOCSMIIREG)) {
2692 if (duplex_chg)
2693 jme_reset_link(jme);
2694 jme_get_settings(netdev, &jme->old_ecmd);
2695 set_bit(JME_FLAG_SSET, &jme->flags);
2696 }
2697
2698 return rc;
2699}
2700
2701static u32
2702jme_get_link(struct net_device *netdev)
2703{
2704 struct jme_adapter *jme = netdev_priv(netdev);
2705 return jread32(jme, JME_PHY_LINK) & PHY_LINK_UP;
2706}
2707
2708static u32
2709jme_get_msglevel(struct net_device *netdev)
2710{
2711 struct jme_adapter *jme = netdev_priv(netdev);
2712 return jme->msg_enable;
2713}
2714
2715static void
2716jme_set_msglevel(struct net_device *netdev, u32 value)
2717{
2718 struct jme_adapter *jme = netdev_priv(netdev);
2719 jme->msg_enable = value;
2720}
2721
2722static netdev_features_t
2723jme_fix_features(struct net_device *netdev, netdev_features_t features)
2724{
2725 if (netdev->mtu > 1900)
2726 features &= ~(NETIF_F_ALL_TSO | NETIF_F_ALL_CSUM);
2727 return features;
2728}
2729
2730static int
2731jme_set_features(struct net_device *netdev, netdev_features_t features)
2732{
2733 struct jme_adapter *jme = netdev_priv(netdev);
2734
2735 spin_lock_bh(&jme->rxmcs_lock);
2736 if (features & NETIF_F_RXCSUM)
2737 jme->reg_rxmcs |= RXMCS_CHECKSUM;
2738 else
2739 jme->reg_rxmcs &= ~RXMCS_CHECKSUM;
2740 jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2741 spin_unlock_bh(&jme->rxmcs_lock);
2742
2743 return 0;
2744}
2745
2746static int
2747jme_nway_reset(struct net_device *netdev)
2748{
2749 struct jme_adapter *jme = netdev_priv(netdev);
2750 jme_restart_an(jme);
2751 return 0;
2752}
2753
2754static u8
2755jme_smb_read(struct jme_adapter *jme, unsigned int addr)
2756{
2757 u32 val;
2758 int to;
2759
2760 val = jread32(jme, JME_SMBCSR);
2761 to = JME_SMB_BUSY_TIMEOUT;
2762 while ((val & SMBCSR_BUSY) && --to) {
2763 msleep(1);
2764 val = jread32(jme, JME_SMBCSR);
2765 }
2766 if (!to) {
2767 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2768 return 0xFF;
2769 }
2770
2771 jwrite32(jme, JME_SMBINTF,
2772 ((addr << SMBINTF_HWADDR_SHIFT) & SMBINTF_HWADDR) |
2773 SMBINTF_HWRWN_READ |
2774 SMBINTF_HWCMD);
2775
2776 val = jread32(jme, JME_SMBINTF);
2777 to = JME_SMB_BUSY_TIMEOUT;
2778 while ((val & SMBINTF_HWCMD) && --to) {
2779 msleep(1);
2780 val = jread32(jme, JME_SMBINTF);
2781 }
2782 if (!to) {
2783 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2784 return 0xFF;
2785 }
2786
2787 return (val & SMBINTF_HWDATR) >> SMBINTF_HWDATR_SHIFT;
2788}
2789
2790static void
2791jme_smb_write(struct jme_adapter *jme, unsigned int addr, u8 data)
2792{
2793 u32 val;
2794 int to;
2795
2796 val = jread32(jme, JME_SMBCSR);
2797 to = JME_SMB_BUSY_TIMEOUT;
2798 while ((val & SMBCSR_BUSY) && --to) {
2799 msleep(1);
2800 val = jread32(jme, JME_SMBCSR);
2801 }
2802 if (!to) {
2803 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2804 return;
2805 }
2806
2807 jwrite32(jme, JME_SMBINTF,
2808 ((data << SMBINTF_HWDATW_SHIFT) & SMBINTF_HWDATW) |
2809 ((addr << SMBINTF_HWADDR_SHIFT) & SMBINTF_HWADDR) |
2810 SMBINTF_HWRWN_WRITE |
2811 SMBINTF_HWCMD);
2812
2813 val = jread32(jme, JME_SMBINTF);
2814 to = JME_SMB_BUSY_TIMEOUT;
2815 while ((val & SMBINTF_HWCMD) && --to) {
2816 msleep(1);
2817 val = jread32(jme, JME_SMBINTF);
2818 }
2819 if (!to) {
2820 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2821 return;
2822 }
2823
2824 mdelay(2);
2825}
2826
2827static int
2828jme_get_eeprom_len(struct net_device *netdev)
2829{
2830 struct jme_adapter *jme = netdev_priv(netdev);
2831 u32 val;
2832 val = jread32(jme, JME_SMBCSR);
2833 return (val & SMBCSR_EEPROMD) ? JME_SMB_LEN : 0;
2834}
2835
2836static int
2837jme_get_eeprom(struct net_device *netdev,
2838 struct ethtool_eeprom *eeprom, u8 *data)
2839{
2840 struct jme_adapter *jme = netdev_priv(netdev);
2841 int i, offset = eeprom->offset, len = eeprom->len;
2842
2843 /*
2844 * ethtool will check the boundary for us
2845 */
2846 eeprom->magic = JME_EEPROM_MAGIC;
2847 for (i = 0 ; i < len ; ++i)
2848 data[i] = jme_smb_read(jme, i + offset);
2849
2850 return 0;
2851}
2852
2853static int
2854jme_set_eeprom(struct net_device *netdev,
2855 struct ethtool_eeprom *eeprom, u8 *data)
2856{
2857 struct jme_adapter *jme = netdev_priv(netdev);
2858 int i, offset = eeprom->offset, len = eeprom->len;
2859
2860 if (eeprom->magic != JME_EEPROM_MAGIC)
2861 return -EINVAL;
2862
2863 /*
2864 * ethtool will check the boundary for us
2865 */
2866 for (i = 0 ; i < len ; ++i)
2867 jme_smb_write(jme, i + offset, data[i]);
2868
2869 return 0;
2870}
2871
2872static const struct ethtool_ops jme_ethtool_ops = {
2873 .get_drvinfo = jme_get_drvinfo,
2874 .get_regs_len = jme_get_regs_len,
2875 .get_regs = jme_get_regs,
2876 .get_coalesce = jme_get_coalesce,
2877 .set_coalesce = jme_set_coalesce,
2878 .get_pauseparam = jme_get_pauseparam,
2879 .set_pauseparam = jme_set_pauseparam,
2880 .get_wol = jme_get_wol,
2881 .set_wol = jme_set_wol,
2882 .get_settings = jme_get_settings,
2883 .set_settings = jme_set_settings,
2884 .get_link = jme_get_link,
2885 .get_msglevel = jme_get_msglevel,
2886 .set_msglevel = jme_set_msglevel,
2887 .nway_reset = jme_nway_reset,
2888 .get_eeprom_len = jme_get_eeprom_len,
2889 .get_eeprom = jme_get_eeprom,
2890 .set_eeprom = jme_set_eeprom,
2891};
2892
2893static int
2894jme_pci_dma64(struct pci_dev *pdev)
2895{
2896 if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250 &&
2897 !pci_set_dma_mask(pdev, DMA_BIT_MASK(64)))
2898 if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)))
2899 return 1;
2900
2901 if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250 &&
2902 !pci_set_dma_mask(pdev, DMA_BIT_MASK(40)))
2903 if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(40)))
2904 return 1;
2905
2906 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32)))
2907 if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)))
2908 return 0;
2909
2910 return -1;
2911}
2912
2913static inline void
2914jme_phy_init(struct jme_adapter *jme)
2915{
2916 u16 reg26;
2917
2918 reg26 = jme_mdio_read(jme->dev, jme->mii_if.phy_id, 26);
2919 jme_mdio_write(jme->dev, jme->mii_if.phy_id, 26, reg26 | 0x1000);
2920}
2921
2922static inline void
2923jme_check_hw_ver(struct jme_adapter *jme)
2924{
2925 u32 chipmode;
2926
2927 chipmode = jread32(jme, JME_CHIPMODE);
2928
2929 jme->fpgaver = (chipmode & CM_FPGAVER_MASK) >> CM_FPGAVER_SHIFT;
2930 jme->chiprev = (chipmode & CM_CHIPREV_MASK) >> CM_CHIPREV_SHIFT;
2931 jme->chip_main_rev = jme->chiprev & 0xF;
2932 jme->chip_sub_rev = (jme->chiprev >> 4) & 0xF;
2933}
2934
2935static const struct net_device_ops jme_netdev_ops = {
2936 .ndo_open = jme_open,
2937 .ndo_stop = jme_close,
2938 .ndo_validate_addr = eth_validate_addr,
2939 .ndo_do_ioctl = jme_ioctl,
2940 .ndo_start_xmit = jme_start_xmit,
2941 .ndo_set_mac_address = jme_set_macaddr,
2942 .ndo_set_rx_mode = jme_set_multi,
2943 .ndo_change_mtu = jme_change_mtu,
2944 .ndo_tx_timeout = jme_tx_timeout,
2945 .ndo_fix_features = jme_fix_features,
2946 .ndo_set_features = jme_set_features,
2947};
2948
2949static int __devinit
2950jme_init_one(struct pci_dev *pdev,
2951 const struct pci_device_id *ent)
2952{
2953 int rc = 0, using_dac, i;
2954 struct net_device *netdev;
2955 struct jme_adapter *jme;
2956 u16 bmcr, bmsr;
2957 u32 apmc;
2958
2959 /*
2960 * set up PCI device basics
2961 */
2962 rc = pci_enable_device(pdev);
2963 if (rc) {
2964 pr_err("Cannot enable PCI device\n");
2965 goto err_out;
2966 }
2967
2968 using_dac = jme_pci_dma64(pdev);
2969 if (using_dac < 0) {
2970 pr_err("Cannot set PCI DMA Mask\n");
2971 rc = -EIO;
2972 goto err_out_disable_pdev;
2973 }
2974
2975 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
2976 pr_err("No PCI resource region found\n");
2977 rc = -ENOMEM;
2978 goto err_out_disable_pdev;
2979 }
2980
2981 rc = pci_request_regions(pdev, DRV_NAME);
2982 if (rc) {
2983 pr_err("Cannot obtain PCI resource region\n");
2984 goto err_out_disable_pdev;
2985 }
2986
2987 pci_set_master(pdev);
2988
2989 /*
2990 * alloc and init net device
2991 */
2992 netdev = alloc_etherdev(sizeof(*jme));
2993 if (!netdev) {
2994 rc = -ENOMEM;
2995 goto err_out_release_regions;
2996 }
2997 netdev->netdev_ops = &jme_netdev_ops;
2998 netdev->ethtool_ops = &jme_ethtool_ops;
2999 netdev->watchdog_timeo = TX_TIMEOUT;
3000 netdev->hw_features = NETIF_F_IP_CSUM |
3001 NETIF_F_IPV6_CSUM |
3002 NETIF_F_SG |
3003 NETIF_F_TSO |
3004 NETIF_F_TSO6 |
3005 NETIF_F_RXCSUM;
3006 netdev->features = NETIF_F_IP_CSUM |
3007 NETIF_F_IPV6_CSUM |
3008 NETIF_F_SG |
3009 NETIF_F_TSO |
3010 NETIF_F_TSO6 |
3011 NETIF_F_HW_VLAN_TX |
3012 NETIF_F_HW_VLAN_RX;
3013 if (using_dac)
3014 netdev->features |= NETIF_F_HIGHDMA;
3015
3016 SET_NETDEV_DEV(netdev, &pdev->dev);
3017 pci_set_drvdata(pdev, netdev);
3018
3019 /*
3020 * init adapter info
3021 */
3022 jme = netdev_priv(netdev);
3023 jme->pdev = pdev;
3024 jme->dev = netdev;
3025 jme->jme_rx = netif_rx;
3026 jme->old_mtu = netdev->mtu = 1500;
3027 jme->phylink = 0;
3028 jme->tx_ring_size = 1 << 10;
3029 jme->tx_ring_mask = jme->tx_ring_size - 1;
3030 jme->tx_wake_threshold = 1 << 9;
3031 jme->rx_ring_size = 1 << 9;
3032 jme->rx_ring_mask = jme->rx_ring_size - 1;
3033 jme->msg_enable = JME_DEF_MSG_ENABLE;
3034 jme->regs = ioremap(pci_resource_start(pdev, 0),
3035 pci_resource_len(pdev, 0));
3036 if (!(jme->regs)) {
3037 pr_err("Mapping PCI resource region error\n");
3038 rc = -ENOMEM;
3039 goto err_out_free_netdev;
3040 }
3041
3042 if (no_pseudohp) {
3043 apmc = jread32(jme, JME_APMC) & ~JME_APMC_PSEUDO_HP_EN;
3044 jwrite32(jme, JME_APMC, apmc);
3045 } else if (force_pseudohp) {
3046 apmc = jread32(jme, JME_APMC) | JME_APMC_PSEUDO_HP_EN;
3047 jwrite32(jme, JME_APMC, apmc);
3048 }
3049
3050 NETIF_NAPI_SET(netdev, &jme->napi, jme_poll, jme->rx_ring_size >> 2)
3051
3052 spin_lock_init(&jme->phy_lock);
3053 spin_lock_init(&jme->macaddr_lock);
3054 spin_lock_init(&jme->rxmcs_lock);
3055
3056 atomic_set(&jme->link_changing, 1);
3057 atomic_set(&jme->rx_cleaning, 1);
3058 atomic_set(&jme->tx_cleaning, 1);
3059 atomic_set(&jme->rx_empty, 1);
3060
3061 tasklet_init(&jme->pcc_task,
3062 jme_pcc_tasklet,
3063 (unsigned long) jme);
3064 tasklet_init(&jme->linkch_task,
3065 jme_link_change_tasklet,
3066 (unsigned long) jme);
3067 tasklet_init(&jme->txclean_task,
3068 jme_tx_clean_tasklet,
3069 (unsigned long) jme);
3070 tasklet_init(&jme->rxclean_task,
3071 jme_rx_clean_tasklet,
3072 (unsigned long) jme);
3073 tasklet_init(&jme->rxempty_task,
3074 jme_rx_empty_tasklet,
3075 (unsigned long) jme);
3076 tasklet_disable_nosync(&jme->linkch_task);
3077 tasklet_disable_nosync(&jme->txclean_task);
3078 tasklet_disable_nosync(&jme->rxclean_task);
3079 tasklet_disable_nosync(&jme->rxempty_task);
3080 jme->dpi.cur = PCC_P1;
3081
3082 jme->reg_ghc = 0;
3083 jme->reg_rxcs = RXCS_DEFAULT;
3084 jme->reg_rxmcs = RXMCS_DEFAULT;
3085 jme->reg_txpfc = 0;
3086 jme->reg_pmcs = PMCS_MFEN;
3087 jme->reg_gpreg1 = GPREG1_DEFAULT;
3088
3089 if (jme->reg_rxmcs & RXMCS_CHECKSUM)
3090 netdev->features |= NETIF_F_RXCSUM;
3091
3092 /*
3093 * Get Max Read Req Size from PCI Config Space
3094 */
3095 pci_read_config_byte(pdev, PCI_DCSR_MRRS, &jme->mrrs);
3096 jme->mrrs &= PCI_DCSR_MRRS_MASK;
3097 switch (jme->mrrs) {
3098 case MRRS_128B:
3099 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_128B;
3100 break;
3101 case MRRS_256B:
3102 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_256B;
3103 break;
3104 default:
3105 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_512B;
3106 break;
3107 }
3108
3109 /*
3110 * Must check before reset_mac_processor
3111 */
3112 jme_check_hw_ver(jme);
3113 jme->mii_if.dev = netdev;
3114 if (jme->fpgaver) {
3115 jme->mii_if.phy_id = 0;
3116 for (i = 1 ; i < 32 ; ++i) {
3117 bmcr = jme_mdio_read(netdev, i, MII_BMCR);
3118 bmsr = jme_mdio_read(netdev, i, MII_BMSR);
3119 if (bmcr != 0xFFFFU && (bmcr != 0 || bmsr != 0)) {
3120 jme->mii_if.phy_id = i;
3121 break;
3122 }
3123 }
3124
3125 if (!jme->mii_if.phy_id) {
3126 rc = -EIO;
3127 pr_err("Can not find phy_id\n");
3128 goto err_out_unmap;
3129 }
3130
3131 jme->reg_ghc |= GHC_LINK_POLL;
3132 } else {
3133 jme->mii_if.phy_id = 1;
3134 }
3135 if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250)
3136 jme->mii_if.supports_gmii = true;
3137 else
3138 jme->mii_if.supports_gmii = false;
3139 jme->mii_if.phy_id_mask = 0x1F;
3140 jme->mii_if.reg_num_mask = 0x1F;
3141 jme->mii_if.mdio_read = jme_mdio_read;
3142 jme->mii_if.mdio_write = jme_mdio_write;
3143
3144 jme_clear_pm(jme);
3145 pci_set_power_state(jme->pdev, PCI_D0);
3146 device_set_wakeup_enable(&pdev->dev, true);
3147
3148 jme_set_phyfifo_5level(jme);
3149 jme->pcirev = pdev->revision;
3150 if (!jme->fpgaver)
3151 jme_phy_init(jme);
3152 jme_phy_off(jme);
3153
3154 /*
3155 * Reset MAC processor and reload EEPROM for MAC Address
3156 */
3157 jme_reset_mac_processor(jme);
3158 rc = jme_reload_eeprom(jme);
3159 if (rc) {
3160 pr_err("Reload eeprom for reading MAC Address error\n");
3161 goto err_out_unmap;
3162 }
3163 jme_load_macaddr(netdev);
3164
3165 /*
3166 * Tell stack that we are not ready to work until open()
3167 */
3168 netif_carrier_off(netdev);
3169
3170 rc = register_netdev(netdev);
3171 if (rc) {
3172 pr_err("Cannot register net device\n");
3173 goto err_out_unmap;
3174 }
3175
3176 netif_info(jme, probe, jme->dev, "%s%s chiprev:%x pcirev:%x macaddr:%pM\n",
3177 (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC250) ?
3178 "JMC250 Gigabit Ethernet" :
3179 (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC260) ?
3180 "JMC260 Fast Ethernet" : "Unknown",
3181 (jme->fpgaver != 0) ? " (FPGA)" : "",
3182 (jme->fpgaver != 0) ? jme->fpgaver : jme->chiprev,
3183 jme->pcirev, netdev->dev_addr);
3184
3185 return 0;
3186
3187err_out_unmap:
3188 iounmap(jme->regs);
3189err_out_free_netdev:
3190 pci_set_drvdata(pdev, NULL);
3191 free_netdev(netdev);
3192err_out_release_regions:
3193 pci_release_regions(pdev);
3194err_out_disable_pdev:
3195 pci_disable_device(pdev);
3196err_out:
3197 return rc;
3198}
3199
3200static void __devexit
3201jme_remove_one(struct pci_dev *pdev)
3202{
3203 struct net_device *netdev = pci_get_drvdata(pdev);
3204 struct jme_adapter *jme = netdev_priv(netdev);
3205
3206 unregister_netdev(netdev);
3207 iounmap(jme->regs);
3208 pci_set_drvdata(pdev, NULL);
3209 free_netdev(netdev);
3210 pci_release_regions(pdev);
3211 pci_disable_device(pdev);
3212
3213}
3214
3215static void
3216jme_shutdown(struct pci_dev *pdev)
3217{
3218 struct net_device *netdev = pci_get_drvdata(pdev);
3219 struct jme_adapter *jme = netdev_priv(netdev);
3220
3221 jme_powersave_phy(jme);
3222 pci_pme_active(pdev, true);
3223}
3224
3225#ifdef CONFIG_PM_SLEEP
3226static int
3227jme_suspend(struct device *dev)
3228{
3229 struct pci_dev *pdev = to_pci_dev(dev);
3230 struct net_device *netdev = pci_get_drvdata(pdev);
3231 struct jme_adapter *jme = netdev_priv(netdev);
3232
3233 if (!netif_running(netdev))
3234 return 0;
3235
3236 atomic_dec(&jme->link_changing);
3237
3238 netif_device_detach(netdev);
3239 netif_stop_queue(netdev);
3240 jme_stop_irq(jme);
3241
3242 tasklet_disable(&jme->txclean_task);
3243 tasklet_disable(&jme->rxclean_task);
3244 tasklet_disable(&jme->rxempty_task);
3245
3246 if (netif_carrier_ok(netdev)) {
3247 if (test_bit(JME_FLAG_POLL, &jme->flags))
3248 jme_polling_mode(jme);
3249
3250 jme_stop_pcc_timer(jme);
3251 jme_disable_rx_engine(jme);
3252 jme_disable_tx_engine(jme);
3253 jme_reset_mac_processor(jme);
3254 jme_free_rx_resources(jme);
3255 jme_free_tx_resources(jme);
3256 netif_carrier_off(netdev);
3257 jme->phylink = 0;
3258 }
3259
3260 tasklet_enable(&jme->txclean_task);
3261 tasklet_hi_enable(&jme->rxclean_task);
3262 tasklet_hi_enable(&jme->rxempty_task);
3263
3264 jme_powersave_phy(jme);
3265
3266 return 0;
3267}
3268
3269static int
3270jme_resume(struct device *dev)
3271{
3272 struct pci_dev *pdev = to_pci_dev(dev);
3273 struct net_device *netdev = pci_get_drvdata(pdev);
3274 struct jme_adapter *jme = netdev_priv(netdev);
3275
3276 if (!netif_running(netdev))
3277 return 0;
3278
3279 jme_clear_pm(jme);
3280 jme_phy_on(jme);
3281 if (test_bit(JME_FLAG_SSET, &jme->flags))
3282 jme_set_settings(netdev, &jme->old_ecmd);
3283 else
3284 jme_reset_phy_processor(jme);
3285 jme_phy_calibration(jme);
3286 jme_phy_setEA(jme);
3287 jme_start_irq(jme);
3288 netif_device_attach(netdev);
3289
3290 atomic_inc(&jme->link_changing);
3291
3292 jme_reset_link(jme);
3293
3294 return 0;
3295}
3296
3297static SIMPLE_DEV_PM_OPS(jme_pm_ops, jme_suspend, jme_resume);
3298#define JME_PM_OPS (&jme_pm_ops)
3299
3300#else
3301
3302#define JME_PM_OPS NULL
3303#endif
3304
3305static DEFINE_PCI_DEVICE_TABLE(jme_pci_tbl) = {
3306 { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMC250) },
3307 { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMC260) },
3308 { }
3309};
3310
3311static struct pci_driver jme_driver = {
3312 .name = DRV_NAME,
3313 .id_table = jme_pci_tbl,
3314 .probe = jme_init_one,
3315 .remove = __devexit_p(jme_remove_one),
3316 .shutdown = jme_shutdown,
3317 .driver.pm = JME_PM_OPS,
3318};
3319
3320static int __init
3321jme_init_module(void)
3322{
3323 pr_info("JMicron JMC2XX ethernet driver version %s\n", DRV_VERSION);
3324 return pci_register_driver(&jme_driver);
3325}
3326
3327static void __exit
3328jme_cleanup_module(void)
3329{
3330 pci_unregister_driver(&jme_driver);
3331}
3332
3333module_init(jme_init_module);
3334module_exit(jme_cleanup_module);
3335
3336MODULE_AUTHOR("Guo-Fu Tseng <cooldavid@cooldavid.org>");
3337MODULE_DESCRIPTION("JMicron JMC2x0 PCI Express Ethernet driver");
3338MODULE_LICENSE("GPL");
3339MODULE_VERSION(DRV_VERSION);
3340MODULE_DEVICE_TABLE(pci, jme_pci_tbl);