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