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Merge tag 'trace-v6.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace...
[drm/drm-misc.git] / drivers / net / ethernet / jme.c
blobd8be0e4dcb072b8cf8e8d26a22173829de3d40c8
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
35 static int force_pseudohp = -1;
36 static int no_pseudohp = -1;
37 static int no_extplug = -1;
38 module_param(force_pseudohp, int, 0);
39 MODULE_PARM_DESC(force_pseudohp,
40 "Enable pseudo hot-plug feature manually by driver instead of BIOS.");
41 module_param(no_pseudohp, int, 0);
42 MODULE_PARM_DESC(no_pseudohp, "Disable pseudo hot-plug feature.");
43 module_param(no_extplug, int, 0);
44 MODULE_PARM_DESC(no_extplug,
45 "Do not use external plug signal for pseudo hot-plug.");
46
47 static int
48 jme_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
53 read_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
77 static void
78 jme_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
99 static inline void
100 jme_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
124 static void
125 jme_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
151 static inline void
152 jme_mac_rxclk_off(struct jme_adapter *jme)
153 {
154 jme->reg_gpreg1 |= GPREG1_RXCLKOFF;
155 jwrite32f(jme, JME_GPREG1, jme->reg_gpreg1);
156 }
157
158 static inline void
159 jme_mac_rxclk_on(struct jme_adapter *jme)
160 {
161 jme->reg_gpreg1 &= ~GPREG1_RXCLKOFF;
162 jwrite32f(jme, JME_GPREG1, jme->reg_gpreg1);
163 }
164
165 static inline void
166 jme_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
172 static inline void
173 jme_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
183 static inline void
184 jme_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
190 static inline void
191 jme_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
198 static inline void
199 jme_assert_ghc_reset(struct jme_adapter *jme)
200 {
201 jme->reg_ghc |= GHC_SWRST;
202 jwrite32f(jme, JME_GHC, jme->reg_ghc);
203 }
204
205 static inline void
206 jme_clear_ghc_reset(struct jme_adapter *jme)
207 {
208 jme->reg_ghc &= ~GHC_SWRST;
209 jwrite32f(jme, JME_GHC, jme->reg_ghc);
210 }
211
212 static void
213 jme_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
259 static inline void
260 jme_clear_pm_enable_wol(struct jme_adapter *jme)
261 {
262 jwrite32(jme, JME_PMCS, PMCS_STMASK | jme->reg_pmcs);
263 }
264
265 static inline void
266 jme_clear_pm_disable_wol(struct jme_adapter *jme)
267 {
268 jwrite32(jme, JME_PMCS, PMCS_STMASK);
269 }
270
271 static int
272 jme_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
301 static void
302 jme_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
321 static inline void
322 jme_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
354 static void
355 jme_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
376 static inline void
377 jme_stop_irq(struct jme_adapter *jme)
378 {
379 /*
380 * Disable Interrupts
381 */
382 jwrite32f(jme, JME_IENC, INTR_ENABLE);
383 }
384
385 static u32
386 jme_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
398 static inline void
399 jme_set_phyfifo_5level(struct jme_adapter *jme)
400 {
401 jme_mdio_write(jme->dev, jme->mii_if.phy_id, 27, 0x0004);
402 }
403
404 static inline void
405 jme_set_phyfifo_8level(struct jme_adapter *jme)
406 {
407 jme_mdio_write(jme->dev, jme->mii_if.phy_id, 27, 0x0000);
408 }
409
410 static int
411 jme_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
552 out:
553 return rc;
554 }
555
556 static int
557 jme_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
587 err_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
593 err_set_null:
594 txring->desc = NULL;
595 txring->dmaalloc = 0;
596 txring->dma = 0;
597 txring->bufinf = NULL;
598
599 return -ENOMEM;
600 }
601
602 static void
603 jme_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
641 static inline void
642 jme_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
676 static inline void
677 jme_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
704 static void
705 jme_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
725 static int
726 jme_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
756 static void
757 jme_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
773 static void
774 jme_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
800 static int
801 jme_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
842 err_free_rxring:
843 dma_free_coherent(&(jme->pdev->dev),
844 RX_RING_ALLOC_SIZE(jme->rx_ring_size),
845 rxring->alloc,
846 rxring->dmaalloc);
847 err_set_null:
848 rxring->desc = NULL;
849 rxring->dmaalloc = 0;
850 rxring->dma = 0;
851 rxring->bufinf = NULL;
852
853 return -ENOMEM;
854 }
855
856 static inline void
857 jme_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
899 static inline void
900 jme_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
911 static inline void
912 jme_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
939 static u16
940 jme_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
950 if (ip_hdr(skb)->protocol != IPPROTO_UDP ||
951 skb->len < (ETH_HLEN + ip_hdrlen(skb) + sizeof(struct udphdr))) {
952 skb_reset_network_header(skb);
953 return csum;
954 }
955 skb_set_transport_header(skb, ETH_HLEN + ip_hdrlen(skb));
956 csum = udp_hdr(skb)->check;
957 skb_reset_transport_header(skb);
958 skb_reset_network_header(skb);
959
960 return csum;
961 }
962
963 static int
964 jme_rxsum_ok(struct jme_adapter *jme, u16 flags, struct sk_buff *skb)
965 {
966 if (!(flags & (RXWBFLAG_TCPON | RXWBFLAG_UDPON | RXWBFLAG_IPV4)))
967 return false;
968
969 if (unlikely((flags & (RXWBFLAG_MF | RXWBFLAG_TCPON | RXWBFLAG_TCPCS))
970 == RXWBFLAG_TCPON)) {
971 if (flags & RXWBFLAG_IPV4)
972 netif_err(jme, rx_err, jme->dev, "TCP Checksum error\n");
973 return false;
974 }
975
976 if (unlikely((flags & (RXWBFLAG_MF | RXWBFLAG_UDPON | RXWBFLAG_UDPCS))
977 == RXWBFLAG_UDPON) && jme_udpsum(skb)) {
978 if (flags & RXWBFLAG_IPV4)
979 netif_err(jme, rx_err, jme->dev, "UDP Checksum error\n");
980 return false;
981 }
982
983 if (unlikely((flags & (RXWBFLAG_IPV4 | RXWBFLAG_IPCS))
984 == RXWBFLAG_IPV4)) {
985 netif_err(jme, rx_err, jme->dev, "IPv4 Checksum error\n");
986 return false;
987 }
988
989 return true;
990 }
991
992 static void
993 jme_alloc_and_feed_skb(struct jme_adapter *jme, int idx)
994 {
995 struct jme_ring *rxring = &(jme->rxring[0]);
996 struct rxdesc *rxdesc = rxring->desc;
997 struct jme_buffer_info *rxbi = rxring->bufinf;
998 struct sk_buff *skb;
999 int framesize;
1000
1001 rxdesc += idx;
1002 rxbi += idx;
1003
1004 skb = rxbi->skb;
1005 dma_sync_single_for_cpu(&jme->pdev->dev, rxbi->mapping, rxbi->len,
1006 DMA_FROM_DEVICE);
1007
1008 if (unlikely(jme_make_new_rx_buf(jme, idx))) {
1009 dma_sync_single_for_device(&jme->pdev->dev, rxbi->mapping,
1010 rxbi->len, DMA_FROM_DEVICE);
1011
1012 ++(NET_STAT(jme).rx_dropped);
1013 } else {
1014 framesize = le16_to_cpu(rxdesc->descwb.framesize)
1015 - RX_PREPAD_SIZE;
1016
1017 skb_reserve(skb, RX_PREPAD_SIZE);
1018 skb_put(skb, framesize);
1019 skb->protocol = eth_type_trans(skb, jme->dev);
1020
1021 if (jme_rxsum_ok(jme, le16_to_cpu(rxdesc->descwb.flags), skb))
1022 skb->ip_summed = CHECKSUM_UNNECESSARY;
1023 else
1024 skb_checksum_none_assert(skb);
1025
1026 if (rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_TAGON)) {
1027 u16 vid = le16_to_cpu(rxdesc->descwb.vlan);
1028
1029 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
1030 NET_STAT(jme).rx_bytes += 4;
1031 }
1032 jme->jme_rx(skb);
1033
1034 if ((rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_DEST)) ==
1035 cpu_to_le16(RXWBFLAG_DEST_MUL))
1036 ++(NET_STAT(jme).multicast);
1037
1038 NET_STAT(jme).rx_bytes += framesize;
1039 ++(NET_STAT(jme).rx_packets);
1040 }
1041
1042 jme_set_clean_rxdesc(jme, idx);
1043
1044 }
1045
1046 static int
1047 jme_process_receive(struct jme_adapter *jme, int limit)
1048 {
1049 struct jme_ring *rxring = &(jme->rxring[0]);
1050 struct rxdesc *rxdesc;
1051 int i, j, ccnt, desccnt, mask = jme->rx_ring_mask;
1052
1053 if (unlikely(!atomic_dec_and_test(&jme->rx_cleaning)))
1054 goto out_inc;
1055
1056 if (unlikely(atomic_read(&jme->link_changing) != 1))
1057 goto out_inc;
1058
1059 if (unlikely(!netif_carrier_ok(jme->dev)))
1060 goto out_inc;
1061
1062 i = atomic_read(&rxring->next_to_clean);
1063 while (limit > 0) {
1064 rxdesc = rxring->desc;
1065 rxdesc += i;
1066
1067 if ((rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_OWN)) ||
1068 !(rxdesc->descwb.desccnt & RXWBDCNT_WBCPL))
1069 goto out;
1070 --limit;
1071
1072 rmb();
1073 desccnt = rxdesc->descwb.desccnt & RXWBDCNT_DCNT;
1074
1075 if (unlikely(desccnt > 1 ||
1076 rxdesc->descwb.errstat & RXWBERR_ALLERR)) {
1077
1078 if (rxdesc->descwb.errstat & RXWBERR_CRCERR)
1079 ++(NET_STAT(jme).rx_crc_errors);
1080 else if (rxdesc->descwb.errstat & RXWBERR_OVERUN)
1081 ++(NET_STAT(jme).rx_fifo_errors);
1082 else
1083 ++(NET_STAT(jme).rx_errors);
1084
1085 if (desccnt > 1)
1086 limit -= desccnt - 1;
1087
1088 for (j = i, ccnt = desccnt ; ccnt-- ; ) {
1089 jme_set_clean_rxdesc(jme, j);
1090 j = (j + 1) & (mask);
1091 }
1092
1093 } else {
1094 jme_alloc_and_feed_skb(jme, i);
1095 }
1096
1097 i = (i + desccnt) & (mask);
1098 }
1099
1100 out:
1101 atomic_set(&rxring->next_to_clean, i);
1102
1103 out_inc:
1104 atomic_inc(&jme->rx_cleaning);
1105
1106 return limit > 0 ? limit : 0;
1107
1108 }
1109
1110 static void
1111 jme_attempt_pcc(struct dynpcc_info *dpi, int atmp)
1112 {
1113 if (likely(atmp == dpi->cur)) {
1114 dpi->cnt = 0;
1115 return;
1116 }
1117
1118 if (dpi->attempt == atmp) {
1119 ++(dpi->cnt);
1120 } else {
1121 dpi->attempt = atmp;
1122 dpi->cnt = 0;
1123 }
1124
1125 }
1126
1127 static void
1128 jme_dynamic_pcc(struct jme_adapter *jme)
1129 {
1130 register struct dynpcc_info *dpi = &(jme->dpi);
1131
1132 if ((NET_STAT(jme).rx_bytes - dpi->last_bytes) > PCC_P3_THRESHOLD)
1133 jme_attempt_pcc(dpi, PCC_P3);
1134 else if ((NET_STAT(jme).rx_packets - dpi->last_pkts) > PCC_P2_THRESHOLD ||
1135 dpi->intr_cnt > PCC_INTR_THRESHOLD)
1136 jme_attempt_pcc(dpi, PCC_P2);
1137 else
1138 jme_attempt_pcc(dpi, PCC_P1);
1139
1140 if (unlikely(dpi->attempt != dpi->cur && dpi->cnt > 5)) {
1141 if (dpi->attempt < dpi->cur)
1142 tasklet_schedule(&jme->rxclean_task);
1143 jme_set_rx_pcc(jme, dpi->attempt);
1144 dpi->cur = dpi->attempt;
1145 dpi->cnt = 0;
1146 }
1147 }
1148
1149 static void
1150 jme_start_pcc_timer(struct jme_adapter *jme)
1151 {
1152 struct dynpcc_info *dpi = &(jme->dpi);
1153 dpi->last_bytes = NET_STAT(jme).rx_bytes;
1154 dpi->last_pkts = NET_STAT(jme).rx_packets;
1155 dpi->intr_cnt = 0;
1156 jwrite32(jme, JME_TMCSR,
1157 TMCSR_EN | ((0xFFFFFF - PCC_INTERVAL_US) & TMCSR_CNT));
1158 }
1159
1160 static inline void
1161 jme_stop_pcc_timer(struct jme_adapter *jme)
1162 {
1163 jwrite32(jme, JME_TMCSR, 0);
1164 }
1165
1166 static void
1167 jme_shutdown_nic(struct jme_adapter *jme)
1168 {
1169 u32 phylink;
1170
1171 phylink = jme_linkstat_from_phy(jme);
1172
1173 if (!(phylink & PHY_LINK_UP)) {
1174 /*
1175 * Disable all interrupt before issue timer
1176 */
1177 jme_stop_irq(jme);
1178 jwrite32(jme, JME_TIMER2, TMCSR_EN | 0xFFFFFE);
1179 }
1180 }
1181
1182 static void
1183 jme_pcc_tasklet(struct tasklet_struct *t)
1184 {
1185 struct jme_adapter *jme = from_tasklet(jme, t, pcc_task);
1186 struct net_device *netdev = jme->dev;
1187
1188 if (unlikely(test_bit(JME_FLAG_SHUTDOWN, &jme->flags))) {
1189 jme_shutdown_nic(jme);
1190 return;
1191 }
1192
1193 if (unlikely(!netif_carrier_ok(netdev) ||
1194 (atomic_read(&jme->link_changing) != 1)
1195 )) {
1196 jme_stop_pcc_timer(jme);
1197 return;
1198 }
1199
1200 if (!(test_bit(JME_FLAG_POLL, &jme->flags)))
1201 jme_dynamic_pcc(jme);
1202
1203 jme_start_pcc_timer(jme);
1204 }
1205
1206 static inline void
1207 jme_polling_mode(struct jme_adapter *jme)
1208 {
1209 jme_set_rx_pcc(jme, PCC_OFF);
1210 }
1211
1212 static inline void
1213 jme_interrupt_mode(struct jme_adapter *jme)
1214 {
1215 jme_set_rx_pcc(jme, PCC_P1);
1216 }
1217
1218 static inline int
1219 jme_pseudo_hotplug_enabled(struct jme_adapter *jme)
1220 {
1221 u32 apmc;
1222 apmc = jread32(jme, JME_APMC);
1223 return apmc & JME_APMC_PSEUDO_HP_EN;
1224 }
1225
1226 static void
1227 jme_start_shutdown_timer(struct jme_adapter *jme)
1228 {
1229 u32 apmc;
1230
1231 apmc = jread32(jme, JME_APMC) | JME_APMC_PCIE_SD_EN;
1232 apmc &= ~JME_APMC_EPIEN_CTRL;
1233 if (!no_extplug) {
1234 jwrite32f(jme, JME_APMC, apmc | JME_APMC_EPIEN_CTRL_EN);
1235 wmb();
1236 }
1237 jwrite32f(jme, JME_APMC, apmc);
1238
1239 jwrite32f(jme, JME_TIMER2, 0);
1240 set_bit(JME_FLAG_SHUTDOWN, &jme->flags);
1241 jwrite32(jme, JME_TMCSR,
1242 TMCSR_EN | ((0xFFFFFF - APMC_PHP_SHUTDOWN_DELAY) & TMCSR_CNT));
1243 }
1244
1245 static void
1246 jme_stop_shutdown_timer(struct jme_adapter *jme)
1247 {
1248 u32 apmc;
1249
1250 jwrite32f(jme, JME_TMCSR, 0);
1251 jwrite32f(jme, JME_TIMER2, 0);
1252 clear_bit(JME_FLAG_SHUTDOWN, &jme->flags);
1253
1254 apmc = jread32(jme, JME_APMC);
1255 apmc &= ~(JME_APMC_PCIE_SD_EN | JME_APMC_EPIEN_CTRL);
1256 jwrite32f(jme, JME_APMC, apmc | JME_APMC_EPIEN_CTRL_DIS);
1257 wmb();
1258 jwrite32f(jme, JME_APMC, apmc);
1259 }
1260
1261 static void jme_link_change_work(struct work_struct *work)
1262 {
1263 struct jme_adapter *jme = container_of(work, struct jme_adapter, linkch_task);
1264 struct net_device *netdev = jme->dev;
1265 int rc;
1266
1267 while (!atomic_dec_and_test(&jme->link_changing)) {
1268 atomic_inc(&jme->link_changing);
1269 netif_info(jme, intr, jme->dev, "Get link change lock failed\n");
1270 while (atomic_read(&jme->link_changing) != 1)
1271 netif_info(jme, intr, jme->dev, "Waiting link change lock\n");
1272 }
1273
1274 if (jme_check_link(netdev, 1) && jme->old_mtu == netdev->mtu)
1275 goto out;
1276
1277 jme->old_mtu = netdev->mtu;
1278 netif_stop_queue(netdev);
1279 if (jme_pseudo_hotplug_enabled(jme))
1280 jme_stop_shutdown_timer(jme);
1281
1282 jme_stop_pcc_timer(jme);
1283 tasklet_disable(&jme->txclean_task);
1284 tasklet_disable(&jme->rxclean_task);
1285 tasklet_disable(&jme->rxempty_task);
1286
1287 if (netif_carrier_ok(netdev)) {
1288 jme_disable_rx_engine(jme);
1289 jme_disable_tx_engine(jme);
1290 jme_reset_mac_processor(jme);
1291 jme_free_rx_resources(jme);
1292 jme_free_tx_resources(jme);
1293
1294 if (test_bit(JME_FLAG_POLL, &jme->flags))
1295 jme_polling_mode(jme);
1296
1297 netif_carrier_off(netdev);
1298 }
1299
1300 jme_check_link(netdev, 0);
1301 if (netif_carrier_ok(netdev)) {
1302 rc = jme_setup_rx_resources(jme);
1303 if (rc) {
1304 pr_err("Allocating resources for RX error, Device STOPPED!\n");
1305 goto out_enable_tasklet;
1306 }
1307
1308 rc = jme_setup_tx_resources(jme);
1309 if (rc) {
1310 pr_err("Allocating resources for TX error, Device STOPPED!\n");
1311 goto err_out_free_rx_resources;
1312 }
1313
1314 jme_enable_rx_engine(jme);
1315 jme_enable_tx_engine(jme);
1316
1317 netif_start_queue(netdev);
1318
1319 if (test_bit(JME_FLAG_POLL, &jme->flags))
1320 jme_interrupt_mode(jme);
1321
1322 jme_start_pcc_timer(jme);
1323 } else if (jme_pseudo_hotplug_enabled(jme)) {
1324 jme_start_shutdown_timer(jme);
1325 }
1326
1327 goto out_enable_tasklet;
1328
1329 err_out_free_rx_resources:
1330 jme_free_rx_resources(jme);
1331 out_enable_tasklet:
1332 tasklet_enable(&jme->txclean_task);
1333 tasklet_enable(&jme->rxclean_task);
1334 tasklet_enable(&jme->rxempty_task);
1335 out:
1336 atomic_inc(&jme->link_changing);
1337 }
1338
1339 static void
1340 jme_rx_clean_tasklet(struct tasklet_struct *t)
1341 {
1342 struct jme_adapter *jme = from_tasklet(jme, t, rxclean_task);
1343 struct dynpcc_info *dpi = &(jme->dpi);
1344
1345 jme_process_receive(jme, jme->rx_ring_size);
1346 ++(dpi->intr_cnt);
1347
1348 }
1349
1350 static int
1351 jme_poll(JME_NAPI_HOLDER(holder), JME_NAPI_WEIGHT(budget))
1352 {
1353 struct jme_adapter *jme = jme_napi_priv(holder);
1354 int rest;
1355
1356 rest = jme_process_receive(jme, JME_NAPI_WEIGHT_VAL(budget));
1357
1358 while (atomic_read(&jme->rx_empty) > 0) {
1359 atomic_dec(&jme->rx_empty);
1360 ++(NET_STAT(jme).rx_dropped);
1361 jme_restart_rx_engine(jme);
1362 }
1363 atomic_inc(&jme->rx_empty);
1364
1365 if (rest) {
1366 JME_RX_COMPLETE(netdev, holder);
1367 jme_interrupt_mode(jme);
1368 }
1369
1370 JME_NAPI_WEIGHT_SET(budget, rest);
1371 return JME_NAPI_WEIGHT_VAL(budget) - rest;
1372 }
1373
1374 static void
1375 jme_rx_empty_tasklet(struct tasklet_struct *t)
1376 {
1377 struct jme_adapter *jme = from_tasklet(jme, t, rxempty_task);
1378
1379 if (unlikely(atomic_read(&jme->link_changing) != 1))
1380 return;
1381
1382 if (unlikely(!netif_carrier_ok(jme->dev)))
1383 return;
1384
1385 netif_info(jme, rx_status, jme->dev, "RX Queue Full!\n");
1386
1387 jme_rx_clean_tasklet(&jme->rxclean_task);
1388
1389 while (atomic_read(&jme->rx_empty) > 0) {
1390 atomic_dec(&jme->rx_empty);
1391 ++(NET_STAT(jme).rx_dropped);
1392 jme_restart_rx_engine(jme);
1393 }
1394 atomic_inc(&jme->rx_empty);
1395 }
1396
1397 static void
1398 jme_wake_queue_if_stopped(struct jme_adapter *jme)
1399 {
1400 struct jme_ring *txring = &(jme->txring[0]);
1401
1402 smp_wmb();
1403 if (unlikely(netif_queue_stopped(jme->dev) &&
1404 atomic_read(&txring->nr_free) >= (jme->tx_wake_threshold))) {
1405 netif_info(jme, tx_done, jme->dev, "TX Queue Waked\n");
1406 netif_wake_queue(jme->dev);
1407 }
1408
1409 }
1410
1411 static void jme_tx_clean_tasklet(struct tasklet_struct *t)
1412 {
1413 struct jme_adapter *jme = from_tasklet(jme, t, txclean_task);
1414 struct jme_ring *txring = &(jme->txring[0]);
1415 struct txdesc *txdesc = txring->desc;
1416 struct jme_buffer_info *txbi = txring->bufinf, *ctxbi, *ttxbi;
1417 int i, j, cnt = 0, max, err, mask;
1418
1419 tx_dbg(jme, "Into txclean\n");
1420
1421 if (unlikely(!atomic_dec_and_test(&jme->tx_cleaning)))
1422 goto out;
1423
1424 if (unlikely(atomic_read(&jme->link_changing) != 1))
1425 goto out;
1426
1427 if (unlikely(!netif_carrier_ok(jme->dev)))
1428 goto out;
1429
1430 max = jme->tx_ring_size - atomic_read(&txring->nr_free);
1431 mask = jme->tx_ring_mask;
1432
1433 for (i = atomic_read(&txring->next_to_clean) ; cnt < max ; ) {
1434
1435 ctxbi = txbi + i;
1436
1437 if (likely(ctxbi->skb &&
1438 !(txdesc[i].descwb.flags & TXWBFLAG_OWN))) {
1439
1440 tx_dbg(jme, "txclean: %d+%d@%lu\n",
1441 i, ctxbi->nr_desc, jiffies);
1442
1443 err = txdesc[i].descwb.flags & TXWBFLAG_ALLERR;
1444
1445 for (j = 1 ; j < ctxbi->nr_desc ; ++j) {
1446 ttxbi = txbi + ((i + j) & (mask));
1447 txdesc[(i + j) & (mask)].dw[0] = 0;
1448
1449 dma_unmap_page(&jme->pdev->dev,
1450 ttxbi->mapping, ttxbi->len,
1451 DMA_TO_DEVICE);
1452
1453 ttxbi->mapping = 0;
1454 ttxbi->len = 0;
1455 }
1456
1457 dev_kfree_skb(ctxbi->skb);
1458
1459 cnt += ctxbi->nr_desc;
1460
1461 if (unlikely(err)) {
1462 ++(NET_STAT(jme).tx_carrier_errors);
1463 } else {
1464 ++(NET_STAT(jme).tx_packets);
1465 NET_STAT(jme).tx_bytes += ctxbi->len;
1466 }
1467
1468 ctxbi->skb = NULL;
1469 ctxbi->len = 0;
1470 ctxbi->start_xmit = 0;
1471
1472 } else {
1473 break;
1474 }
1475
1476 i = (i + ctxbi->nr_desc) & mask;
1477
1478 ctxbi->nr_desc = 0;
1479 }
1480
1481 tx_dbg(jme, "txclean: done %d@%lu\n", i, jiffies);
1482 atomic_set(&txring->next_to_clean, i);
1483 atomic_add(cnt, &txring->nr_free);
1484
1485 jme_wake_queue_if_stopped(jme);
1486
1487 out:
1488 atomic_inc(&jme->tx_cleaning);
1489 }
1490
1491 static void
1492 jme_intr_msi(struct jme_adapter *jme, u32 intrstat)
1493 {
1494 /*
1495 * Disable interrupt
1496 */
1497 jwrite32f(jme, JME_IENC, INTR_ENABLE);
1498
1499 if (intrstat & (INTR_LINKCH | INTR_SWINTR)) {
1500 /*
1501 * Link change event is critical
1502 * all other events are ignored
1503 */
1504 jwrite32(jme, JME_IEVE, intrstat);
1505 schedule_work(&jme->linkch_task);
1506 goto out_reenable;
1507 }
1508
1509 if (intrstat & INTR_TMINTR) {
1510 jwrite32(jme, JME_IEVE, INTR_TMINTR);
1511 tasklet_schedule(&jme->pcc_task);
1512 }
1513
1514 if (intrstat & (INTR_PCCTXTO | INTR_PCCTX)) {
1515 jwrite32(jme, JME_IEVE, INTR_PCCTXTO | INTR_PCCTX | INTR_TX0);
1516 tasklet_schedule(&jme->txclean_task);
1517 }
1518
1519 if ((intrstat & (INTR_PCCRX0TO | INTR_PCCRX0 | INTR_RX0EMP))) {
1520 jwrite32(jme, JME_IEVE, (intrstat & (INTR_PCCRX0TO |
1521 INTR_PCCRX0 |
1522 INTR_RX0EMP)) |
1523 INTR_RX0);
1524 }
1525
1526 if (test_bit(JME_FLAG_POLL, &jme->flags)) {
1527 if (intrstat & INTR_RX0EMP)
1528 atomic_inc(&jme->rx_empty);
1529
1530 if ((intrstat & (INTR_PCCRX0TO | INTR_PCCRX0 | INTR_RX0EMP))) {
1531 if (likely(JME_RX_SCHEDULE_PREP(jme))) {
1532 jme_polling_mode(jme);
1533 JME_RX_SCHEDULE(jme);
1534 }
1535 }
1536 } else {
1537 if (intrstat & INTR_RX0EMP) {
1538 atomic_inc(&jme->rx_empty);
1539 tasklet_hi_schedule(&jme->rxempty_task);
1540 } else if (intrstat & (INTR_PCCRX0TO | INTR_PCCRX0)) {
1541 tasklet_hi_schedule(&jme->rxclean_task);
1542 }
1543 }
1544
1545 out_reenable:
1546 /*
1547 * Re-enable interrupt
1548 */
1549 jwrite32f(jme, JME_IENS, INTR_ENABLE);
1550 }
1551
1552 static irqreturn_t
1553 jme_intr(int irq, void *dev_id)
1554 {
1555 struct net_device *netdev = dev_id;
1556 struct jme_adapter *jme = netdev_priv(netdev);
1557 u32 intrstat;
1558
1559 intrstat = jread32(jme, JME_IEVE);
1560
1561 /*
1562 * Check if it's really an interrupt for us
1563 */
1564 if (unlikely((intrstat & INTR_ENABLE) == 0))
1565 return IRQ_NONE;
1566
1567 /*
1568 * Check if the device still exist
1569 */
1570 if (unlikely(intrstat == ~((typeof(intrstat))0)))
1571 return IRQ_NONE;
1572
1573 jme_intr_msi(jme, intrstat);
1574
1575 return IRQ_HANDLED;
1576 }
1577
1578 static irqreturn_t
1579 jme_msi(int irq, void *dev_id)
1580 {
1581 struct net_device *netdev = dev_id;
1582 struct jme_adapter *jme = netdev_priv(netdev);
1583 u32 intrstat;
1584
1585 intrstat = jread32(jme, JME_IEVE);
1586
1587 jme_intr_msi(jme, intrstat);
1588
1589 return IRQ_HANDLED;
1590 }
1591
1592 static void
1593 jme_reset_link(struct jme_adapter *jme)
1594 {
1595 jwrite32(jme, JME_TMCSR, TMCSR_SWIT);
1596 }
1597
1598 static void
1599 jme_restart_an(struct jme_adapter *jme)
1600 {
1601 u32 bmcr;
1602
1603 spin_lock_bh(&jme->phy_lock);
1604 bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1605 bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
1606 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr);
1607 spin_unlock_bh(&jme->phy_lock);
1608 }
1609
1610 static int
1611 jme_request_irq(struct jme_adapter *jme)
1612 {
1613 int rc;
1614 struct net_device *netdev = jme->dev;
1615 irq_handler_t handler = jme_intr;
1616 int irq_flags = IRQF_SHARED;
1617
1618 if (!pci_enable_msi(jme->pdev)) {
1619 set_bit(JME_FLAG_MSI, &jme->flags);
1620 handler = jme_msi;
1621 irq_flags = 0;
1622 }
1623
1624 rc = request_irq(jme->pdev->irq, handler, irq_flags, netdev->name,
1625 netdev);
1626 if (rc) {
1627 netdev_err(netdev,
1628 "Unable to request %s interrupt (return: %d)\n",
1629 test_bit(JME_FLAG_MSI, &jme->flags) ? "MSI" : "INTx",
1630 rc);
1631
1632 if (test_bit(JME_FLAG_MSI, &jme->flags)) {
1633 pci_disable_msi(jme->pdev);
1634 clear_bit(JME_FLAG_MSI, &jme->flags);
1635 }
1636 } else {
1637 netdev->irq = jme->pdev->irq;
1638 }
1639
1640 return rc;
1641 }
1642
1643 static void
1644 jme_free_irq(struct jme_adapter *jme)
1645 {
1646 free_irq(jme->pdev->irq, jme->dev);
1647 if (test_bit(JME_FLAG_MSI, &jme->flags)) {
1648 pci_disable_msi(jme->pdev);
1649 clear_bit(JME_FLAG_MSI, &jme->flags);
1650 jme->dev->irq = jme->pdev->irq;
1651 }
1652 }
1653
1654 static inline void
1655 jme_new_phy_on(struct jme_adapter *jme)
1656 {
1657 u32 reg;
1658
1659 reg = jread32(jme, JME_PHY_PWR);
1660 reg &= ~(PHY_PWR_DWN1SEL | PHY_PWR_DWN1SW |
1661 PHY_PWR_DWN2 | PHY_PWR_CLKSEL);
1662 jwrite32(jme, JME_PHY_PWR, reg);
1663
1664 pci_read_config_dword(jme->pdev, PCI_PRIV_PE1, &reg);
1665 reg &= ~PE1_GPREG0_PBG;
1666 reg |= PE1_GPREG0_ENBG;
1667 pci_write_config_dword(jme->pdev, PCI_PRIV_PE1, reg);
1668 }
1669
1670 static inline void
1671 jme_new_phy_off(struct jme_adapter *jme)
1672 {
1673 u32 reg;
1674
1675 reg = jread32(jme, JME_PHY_PWR);
1676 reg |= PHY_PWR_DWN1SEL | PHY_PWR_DWN1SW |
1677 PHY_PWR_DWN2 | PHY_PWR_CLKSEL;
1678 jwrite32(jme, JME_PHY_PWR, reg);
1679
1680 pci_read_config_dword(jme->pdev, PCI_PRIV_PE1, &reg);
1681 reg &= ~PE1_GPREG0_PBG;
1682 reg |= PE1_GPREG0_PDD3COLD;
1683 pci_write_config_dword(jme->pdev, PCI_PRIV_PE1, reg);
1684 }
1685
1686 static inline void
1687 jme_phy_on(struct jme_adapter *jme)
1688 {
1689 u32 bmcr;
1690
1691 bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1692 bmcr &= ~BMCR_PDOWN;
1693 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr);
1694
1695 if (new_phy_power_ctrl(jme->chip_main_rev))
1696 jme_new_phy_on(jme);
1697 }
1698
1699 static inline void
1700 jme_phy_off(struct jme_adapter *jme)
1701 {
1702 u32 bmcr;
1703
1704 bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1705 bmcr |= BMCR_PDOWN;
1706 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr);
1707
1708 if (new_phy_power_ctrl(jme->chip_main_rev))
1709 jme_new_phy_off(jme);
1710 }
1711
1712 static int
1713 jme_phy_specreg_read(struct jme_adapter *jme, u32 specreg)
1714 {
1715 u32 phy_addr;
1716
1717 phy_addr = JM_PHY_SPEC_REG_READ | specreg;
1718 jme_mdio_write(jme->dev, jme->mii_if.phy_id, JM_PHY_SPEC_ADDR_REG,
1719 phy_addr);
1720 return jme_mdio_read(jme->dev, jme->mii_if.phy_id,
1721 JM_PHY_SPEC_DATA_REG);
1722 }
1723
1724 static void
1725 jme_phy_specreg_write(struct jme_adapter *jme, u32 ext_reg, u32 phy_data)
1726 {
1727 u32 phy_addr;
1728
1729 phy_addr = JM_PHY_SPEC_REG_WRITE | ext_reg;
1730 jme_mdio_write(jme->dev, jme->mii_if.phy_id, JM_PHY_SPEC_DATA_REG,
1731 phy_data);
1732 jme_mdio_write(jme->dev, jme->mii_if.phy_id, JM_PHY_SPEC_ADDR_REG,
1733 phy_addr);
1734 }
1735
1736 static int
1737 jme_phy_calibration(struct jme_adapter *jme)
1738 {
1739 u32 ctrl1000, phy_data;
1740
1741 jme_phy_off(jme);
1742 jme_phy_on(jme);
1743 /* Enabel PHY test mode 1 */
1744 ctrl1000 = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_CTRL1000);
1745 ctrl1000 &= ~PHY_GAD_TEST_MODE_MSK;
1746 ctrl1000 |= PHY_GAD_TEST_MODE_1;
1747 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_CTRL1000, ctrl1000);
1748
1749 phy_data = jme_phy_specreg_read(jme, JM_PHY_EXT_COMM_2_REG);
1750 phy_data &= ~JM_PHY_EXT_COMM_2_CALI_MODE_0;
1751 phy_data |= JM_PHY_EXT_COMM_2_CALI_LATCH |
1752 JM_PHY_EXT_COMM_2_CALI_ENABLE;
1753 jme_phy_specreg_write(jme, JM_PHY_EXT_COMM_2_REG, phy_data);
1754 msleep(20);
1755 phy_data = jme_phy_specreg_read(jme, JM_PHY_EXT_COMM_2_REG);
1756 phy_data &= ~(JM_PHY_EXT_COMM_2_CALI_ENABLE |
1757 JM_PHY_EXT_COMM_2_CALI_MODE_0 |
1758 JM_PHY_EXT_COMM_2_CALI_LATCH);
1759 jme_phy_specreg_write(jme, JM_PHY_EXT_COMM_2_REG, phy_data);
1760
1761 /* Disable PHY test mode */
1762 ctrl1000 = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_CTRL1000);
1763 ctrl1000 &= ~PHY_GAD_TEST_MODE_MSK;
1764 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_CTRL1000, ctrl1000);
1765 return 0;
1766 }
1767
1768 static int
1769 jme_phy_setEA(struct jme_adapter *jme)
1770 {
1771 u32 phy_comm0 = 0, phy_comm1 = 0;
1772 u8 nic_ctrl;
1773
1774 pci_read_config_byte(jme->pdev, PCI_PRIV_SHARE_NICCTRL, &nic_ctrl);
1775 if ((nic_ctrl & 0x3) == JME_FLAG_PHYEA_ENABLE)
1776 return 0;
1777
1778 switch (jme->pdev->device) {
1779 case PCI_DEVICE_ID_JMICRON_JMC250:
1780 if (((jme->chip_main_rev == 5) &&
1781 ((jme->chip_sub_rev == 0) || (jme->chip_sub_rev == 1) ||
1782 (jme->chip_sub_rev == 3))) ||
1783 (jme->chip_main_rev >= 6)) {
1784 phy_comm0 = 0x008A;
1785 phy_comm1 = 0x4109;
1786 }
1787 if ((jme->chip_main_rev == 3) &&
1788 ((jme->chip_sub_rev == 1) || (jme->chip_sub_rev == 2)))
1789 phy_comm0 = 0xE088;
1790 break;
1791 case PCI_DEVICE_ID_JMICRON_JMC260:
1792 if (((jme->chip_main_rev == 5) &&
1793 ((jme->chip_sub_rev == 0) || (jme->chip_sub_rev == 1) ||
1794 (jme->chip_sub_rev == 3))) ||
1795 (jme->chip_main_rev >= 6)) {
1796 phy_comm0 = 0x008A;
1797 phy_comm1 = 0x4109;
1798 }
1799 if ((jme->chip_main_rev == 3) &&
1800 ((jme->chip_sub_rev == 1) || (jme->chip_sub_rev == 2)))
1801 phy_comm0 = 0xE088;
1802 if ((jme->chip_main_rev == 2) && (jme->chip_sub_rev == 0))
1803 phy_comm0 = 0x608A;
1804 if ((jme->chip_main_rev == 2) && (jme->chip_sub_rev == 2))
1805 phy_comm0 = 0x408A;
1806 break;
1807 default:
1808 return -ENODEV;
1809 }
1810 if (phy_comm0)
1811 jme_phy_specreg_write(jme, JM_PHY_EXT_COMM_0_REG, phy_comm0);
1812 if (phy_comm1)
1813 jme_phy_specreg_write(jme, JM_PHY_EXT_COMM_1_REG, phy_comm1);
1814
1815 return 0;
1816 }
1817
1818 static int
1819 jme_open(struct net_device *netdev)
1820 {
1821 struct jme_adapter *jme = netdev_priv(netdev);
1822 int rc;
1823
1824 jme_clear_pm_disable_wol(jme);
1825 JME_NAPI_ENABLE(jme);
1826
1827 tasklet_setup(&jme->txclean_task, jme_tx_clean_tasklet);
1828 tasklet_setup(&jme->rxclean_task, jme_rx_clean_tasklet);
1829 tasklet_setup(&jme->rxempty_task, jme_rx_empty_tasklet);
1830
1831 rc = jme_request_irq(jme);
1832 if (rc)
1833 goto err_out;
1834
1835 jme_start_irq(jme);
1836
1837 jme_phy_on(jme);
1838 if (test_bit(JME_FLAG_SSET, &jme->flags))
1839 jme_set_link_ksettings(netdev, &jme->old_cmd);
1840 else
1841 jme_reset_phy_processor(jme);
1842 jme_phy_calibration(jme);
1843 jme_phy_setEA(jme);
1844 jme_reset_link(jme);
1845
1846 return 0;
1847
1848 err_out:
1849 netif_stop_queue(netdev);
1850 netif_carrier_off(netdev);
1851 return rc;
1852 }
1853
1854 static void
1855 jme_set_100m_half(struct jme_adapter *jme)
1856 {
1857 u32 bmcr, tmp;
1858
1859 jme_phy_on(jme);
1860 bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1861 tmp = bmcr & ~(BMCR_ANENABLE | BMCR_SPEED100 |
1862 BMCR_SPEED1000 | BMCR_FULLDPLX);
1863 tmp |= BMCR_SPEED100;
1864
1865 if (bmcr != tmp)
1866 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, tmp);
1867
1868 if (jme->fpgaver)
1869 jwrite32(jme, JME_GHC, GHC_SPEED_100M | GHC_LINK_POLL);
1870 else
1871 jwrite32(jme, JME_GHC, GHC_SPEED_100M);
1872 }
1873
1874 #define JME_WAIT_LINK_TIME 2000 /* 2000ms */
1875 static void
1876 jme_wait_link(struct jme_adapter *jme)
1877 {
1878 u32 phylink, to = JME_WAIT_LINK_TIME;
1879
1880 msleep(1000);
1881 phylink = jme_linkstat_from_phy(jme);
1882 while (!(phylink & PHY_LINK_UP) && (to -= 10) > 0) {
1883 usleep_range(10000, 11000);
1884 phylink = jme_linkstat_from_phy(jme);
1885 }
1886 }
1887
1888 static void
1889 jme_powersave_phy(struct jme_adapter *jme)
1890 {
1891 if (jme->reg_pmcs && device_may_wakeup(&jme->pdev->dev)) {
1892 jme_set_100m_half(jme);
1893 if (jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN))
1894 jme_wait_link(jme);
1895 jme_clear_pm_enable_wol(jme);
1896 } else {
1897 jme_phy_off(jme);
1898 }
1899 }
1900
1901 static int
1902 jme_close(struct net_device *netdev)
1903 {
1904 struct jme_adapter *jme = netdev_priv(netdev);
1905
1906 netif_stop_queue(netdev);
1907 netif_carrier_off(netdev);
1908
1909 jme_stop_irq(jme);
1910 jme_free_irq(jme);
1911
1912 JME_NAPI_DISABLE(jme);
1913
1914 cancel_work_sync(&jme->linkch_task);
1915 tasklet_kill(&jme->txclean_task);
1916 tasklet_kill(&jme->rxclean_task);
1917 tasklet_kill(&jme->rxempty_task);
1918
1919 jme_disable_rx_engine(jme);
1920 jme_disable_tx_engine(jme);
1921 jme_reset_mac_processor(jme);
1922 jme_free_rx_resources(jme);
1923 jme_free_tx_resources(jme);
1924 jme->phylink = 0;
1925 jme_phy_off(jme);
1926
1927 return 0;
1928 }
1929
1930 static int
1931 jme_alloc_txdesc(struct jme_adapter *jme,
1932 struct sk_buff *skb)
1933 {
1934 struct jme_ring *txring = &(jme->txring[0]);
1935 int idx, nr_alloc, mask = jme->tx_ring_mask;
1936
1937 idx = txring->next_to_use;
1938 nr_alloc = skb_shinfo(skb)->nr_frags + 2;
1939
1940 if (unlikely(atomic_read(&txring->nr_free) < nr_alloc))
1941 return -1;
1942
1943 atomic_sub(nr_alloc, &txring->nr_free);
1944
1945 txring->next_to_use = (txring->next_to_use + nr_alloc) & mask;
1946
1947 return idx;
1948 }
1949
1950 static int
1951 jme_fill_tx_map(struct pci_dev *pdev,
1952 struct txdesc *txdesc,
1953 struct jme_buffer_info *txbi,
1954 struct page *page,
1955 u32 page_offset,
1956 u32 len,
1957 bool hidma)
1958 {
1959 dma_addr_t dmaaddr;
1960
1961 dmaaddr = dma_map_page(&pdev->dev, page, page_offset, len,
1962 DMA_TO_DEVICE);
1963
1964 if (unlikely(dma_mapping_error(&pdev->dev, dmaaddr)))
1965 return -EINVAL;
1966
1967 dma_sync_single_for_device(&pdev->dev, dmaaddr, len, DMA_TO_DEVICE);
1968
1969 txdesc->dw[0] = 0;
1970 txdesc->dw[1] = 0;
1971 txdesc->desc2.flags = TXFLAG_OWN;
1972 txdesc->desc2.flags |= (hidma) ? TXFLAG_64BIT : 0;
1973 txdesc->desc2.datalen = cpu_to_le16(len);
1974 txdesc->desc2.bufaddrh = cpu_to_le32((__u64)dmaaddr >> 32);
1975 txdesc->desc2.bufaddrl = cpu_to_le32(
1976 (__u64)dmaaddr & 0xFFFFFFFFUL);
1977
1978 txbi->mapping = dmaaddr;
1979 txbi->len = len;
1980 return 0;
1981 }
1982
1983 static void jme_drop_tx_map(struct jme_adapter *jme, int startidx, int count)
1984 {
1985 struct jme_ring *txring = &(jme->txring[0]);
1986 struct jme_buffer_info *txbi = txring->bufinf, *ctxbi;
1987 int mask = jme->tx_ring_mask;
1988 int j;
1989
1990 for (j = 0 ; j < count ; j++) {
1991 ctxbi = txbi + ((startidx + j + 2) & (mask));
1992 dma_unmap_page(&jme->pdev->dev, ctxbi->mapping, ctxbi->len,
1993 DMA_TO_DEVICE);
1994
1995 ctxbi->mapping = 0;
1996 ctxbi->len = 0;
1997 }
1998 }
1999
2000 static int
2001 jme_map_tx_skb(struct jme_adapter *jme, struct sk_buff *skb, int idx)
2002 {
2003 struct jme_ring *txring = &(jme->txring[0]);
2004 struct txdesc *txdesc = txring->desc, *ctxdesc;
2005 struct jme_buffer_info *txbi = txring->bufinf, *ctxbi;
2006 bool hidma = jme->dev->features & NETIF_F_HIGHDMA;
2007 int i, nr_frags = skb_shinfo(skb)->nr_frags;
2008 int mask = jme->tx_ring_mask;
2009 u32 len;
2010 int ret = 0;
2011
2012 for (i = 0 ; i < nr_frags ; ++i) {
2013 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2014
2015 ctxdesc = txdesc + ((idx + i + 2) & (mask));
2016 ctxbi = txbi + ((idx + i + 2) & (mask));
2017
2018 ret = jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi,
2019 skb_frag_page(frag), skb_frag_off(frag),
2020 skb_frag_size(frag), hidma);
2021 if (ret) {
2022 jme_drop_tx_map(jme, idx, i);
2023 goto out;
2024 }
2025 }
2026
2027 len = skb_is_nonlinear(skb) ? skb_headlen(skb) : skb->len;
2028 ctxdesc = txdesc + ((idx + 1) & (mask));
2029 ctxbi = txbi + ((idx + 1) & (mask));
2030 ret = jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi, virt_to_page(skb->data),
2031 offset_in_page(skb->data), len, hidma);
2032 if (ret)
2033 jme_drop_tx_map(jme, idx, i);
2034
2035 out:
2036 return ret;
2037
2038 }
2039
2040
2041 static int
2042 jme_tx_tso(struct sk_buff *skb, __le16 *mss, u8 *flags)
2043 {
2044 *mss = cpu_to_le16(skb_shinfo(skb)->gso_size << TXDESC_MSS_SHIFT);
2045 if (*mss) {
2046 *flags |= TXFLAG_LSEN;
2047
2048 if (skb->protocol == htons(ETH_P_IP)) {
2049 struct iphdr *iph = ip_hdr(skb);
2050
2051 iph->check = 0;
2052 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
2053 iph->daddr, 0,
2054 IPPROTO_TCP,
2055 0);
2056 } else {
2057 tcp_v6_gso_csum_prep(skb);
2058 }
2059
2060 return 0;
2061 }
2062
2063 return 1;
2064 }
2065
2066 static void
2067 jme_tx_csum(struct jme_adapter *jme, struct sk_buff *skb, u8 *flags)
2068 {
2069 if (skb->ip_summed == CHECKSUM_PARTIAL) {
2070 u8 ip_proto;
2071
2072 switch (skb->protocol) {
2073 case htons(ETH_P_IP):
2074 ip_proto = ip_hdr(skb)->protocol;
2075 break;
2076 case htons(ETH_P_IPV6):
2077 ip_proto = ipv6_hdr(skb)->nexthdr;
2078 break;
2079 default:
2080 ip_proto = 0;
2081 break;
2082 }
2083
2084 switch (ip_proto) {
2085 case IPPROTO_TCP:
2086 *flags |= TXFLAG_TCPCS;
2087 break;
2088 case IPPROTO_UDP:
2089 *flags |= TXFLAG_UDPCS;
2090 break;
2091 default:
2092 netif_err(jme, tx_err, jme->dev, "Error upper layer protocol\n");
2093 break;
2094 }
2095 }
2096 }
2097
2098 static inline void
2099 jme_tx_vlan(struct sk_buff *skb, __le16 *vlan, u8 *flags)
2100 {
2101 if (skb_vlan_tag_present(skb)) {
2102 *flags |= TXFLAG_TAGON;
2103 *vlan = cpu_to_le16(skb_vlan_tag_get(skb));
2104 }
2105 }
2106
2107 static int
2108 jme_fill_tx_desc(struct jme_adapter *jme, struct sk_buff *skb, int idx)
2109 {
2110 struct jme_ring *txring = &(jme->txring[0]);
2111 struct txdesc *txdesc;
2112 struct jme_buffer_info *txbi;
2113 u8 flags;
2114 int ret = 0;
2115
2116 txdesc = (struct txdesc *)txring->desc + idx;
2117 txbi = txring->bufinf + idx;
2118
2119 txdesc->dw[0] = 0;
2120 txdesc->dw[1] = 0;
2121 txdesc->dw[2] = 0;
2122 txdesc->dw[3] = 0;
2123 txdesc->desc1.pktsize = cpu_to_le16(skb->len);
2124 /*
2125 * Set OWN bit at final.
2126 * When kernel transmit faster than NIC.
2127 * And NIC trying to send this descriptor before we tell
2128 * it to start sending this TX queue.
2129 * Other fields are already filled correctly.
2130 */
2131 wmb();
2132 flags = TXFLAG_OWN | TXFLAG_INT;
2133 /*
2134 * Set checksum flags while not tso
2135 */
2136 if (jme_tx_tso(skb, &txdesc->desc1.mss, &flags))
2137 jme_tx_csum(jme, skb, &flags);
2138 jme_tx_vlan(skb, &txdesc->desc1.vlan, &flags);
2139 ret = jme_map_tx_skb(jme, skb, idx);
2140 if (ret)
2141 return ret;
2142
2143 txdesc->desc1.flags = flags;
2144 /*
2145 * Set tx buffer info after telling NIC to send
2146 * For better tx_clean timing
2147 */
2148 wmb();
2149 txbi->nr_desc = skb_shinfo(skb)->nr_frags + 2;
2150 txbi->skb = skb;
2151 txbi->len = skb->len;
2152 txbi->start_xmit = jiffies;
2153 if (!txbi->start_xmit)
2154 txbi->start_xmit = (0UL-1);
2155
2156 return 0;
2157 }
2158
2159 static void
2160 jme_stop_queue_if_full(struct jme_adapter *jme)
2161 {
2162 struct jme_ring *txring = &(jme->txring[0]);
2163 struct jme_buffer_info *txbi = txring->bufinf;
2164 int idx = atomic_read(&txring->next_to_clean);
2165
2166 txbi += idx;
2167
2168 smp_wmb();
2169 if (unlikely(atomic_read(&txring->nr_free) < (MAX_SKB_FRAGS+2))) {
2170 netif_stop_queue(jme->dev);
2171 netif_info(jme, tx_queued, jme->dev, "TX Queue Paused\n");
2172 smp_wmb();
2173 if (atomic_read(&txring->nr_free)
2174 >= (jme->tx_wake_threshold)) {
2175 netif_wake_queue(jme->dev);
2176 netif_info(jme, tx_queued, jme->dev, "TX Queue Fast Waked\n");
2177 }
2178 }
2179
2180 if (unlikely(txbi->start_xmit &&
2181 time_is_before_eq_jiffies(txbi->start_xmit + TX_TIMEOUT) &&
2182 txbi->skb)) {
2183 netif_stop_queue(jme->dev);
2184 netif_info(jme, tx_queued, jme->dev,
2185 "TX Queue Stopped %d@%lu\n", idx, jiffies);
2186 }
2187 }
2188
2189 /*
2190 * This function is already protected by netif_tx_lock()
2191 */
2192
2193 static netdev_tx_t
2194 jme_start_xmit(struct sk_buff *skb, struct net_device *netdev)
2195 {
2196 struct jme_adapter *jme = netdev_priv(netdev);
2197 int idx;
2198
2199 if (unlikely(skb_is_gso(skb) && skb_cow_head(skb, 0))) {
2200 dev_kfree_skb_any(skb);
2201 ++(NET_STAT(jme).tx_dropped);
2202 return NETDEV_TX_OK;
2203 }
2204
2205 idx = jme_alloc_txdesc(jme, skb);
2206
2207 if (unlikely(idx < 0)) {
2208 netif_stop_queue(netdev);
2209 netif_err(jme, tx_err, jme->dev,
2210 "BUG! Tx ring full when queue awake!\n");
2211
2212 return NETDEV_TX_BUSY;
2213 }
2214
2215 if (jme_fill_tx_desc(jme, skb, idx))
2216 return NETDEV_TX_OK;
2217
2218 jwrite32(jme, JME_TXCS, jme->reg_txcs |
2219 TXCS_SELECT_QUEUE0 |
2220 TXCS_QUEUE0S |
2221 TXCS_ENABLE);
2222
2223 tx_dbg(jme, "xmit: %d+%d@%lu\n",
2224 idx, skb_shinfo(skb)->nr_frags + 2, jiffies);
2225 jme_stop_queue_if_full(jme);
2226
2227 return NETDEV_TX_OK;
2228 }
2229
2230 static void
2231 jme_set_unicastaddr(struct net_device *netdev)
2232 {
2233 struct jme_adapter *jme = netdev_priv(netdev);
2234 u32 val;
2235
2236 val = (netdev->dev_addr[3] & 0xff) << 24 |
2237 (netdev->dev_addr[2] & 0xff) << 16 |
2238 (netdev->dev_addr[1] & 0xff) << 8 |
2239 (netdev->dev_addr[0] & 0xff);
2240 jwrite32(jme, JME_RXUMA_LO, val);
2241 val = (netdev->dev_addr[5] & 0xff) << 8 |
2242 (netdev->dev_addr[4] & 0xff);
2243 jwrite32(jme, JME_RXUMA_HI, val);
2244 }
2245
2246 static int
2247 jme_set_macaddr(struct net_device *netdev, void *p)
2248 {
2249 struct jme_adapter *jme = netdev_priv(netdev);
2250 struct sockaddr *addr = p;
2251
2252 if (netif_running(netdev))
2253 return -EBUSY;
2254
2255 spin_lock_bh(&jme->macaddr_lock);
2256 eth_hw_addr_set(netdev, addr->sa_data);
2257 jme_set_unicastaddr(netdev);
2258 spin_unlock_bh(&jme->macaddr_lock);
2259
2260 return 0;
2261 }
2262
2263 static void
2264 jme_set_multi(struct net_device *netdev)
2265 {
2266 struct jme_adapter *jme = netdev_priv(netdev);
2267 u32 mc_hash[2] = {};
2268
2269 spin_lock_bh(&jme->rxmcs_lock);
2270
2271 jme->reg_rxmcs |= RXMCS_BRDFRAME | RXMCS_UNIFRAME;
2272
2273 if (netdev->flags & IFF_PROMISC) {
2274 jme->reg_rxmcs |= RXMCS_ALLFRAME;
2275 } else if (netdev->flags & IFF_ALLMULTI) {
2276 jme->reg_rxmcs |= RXMCS_ALLMULFRAME;
2277 } else if (netdev->flags & IFF_MULTICAST) {
2278 struct netdev_hw_addr *ha;
2279 int bit_nr;
2280
2281 jme->reg_rxmcs |= RXMCS_MULFRAME | RXMCS_MULFILTERED;
2282 netdev_for_each_mc_addr(ha, netdev) {
2283 bit_nr = ether_crc(ETH_ALEN, ha->addr) & 0x3F;
2284 mc_hash[bit_nr >> 5] |= 1 << (bit_nr & 0x1F);
2285 }
2286
2287 jwrite32(jme, JME_RXMCHT_LO, mc_hash[0]);
2288 jwrite32(jme, JME_RXMCHT_HI, mc_hash[1]);
2289 }
2290
2291 wmb();
2292 jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2293
2294 spin_unlock_bh(&jme->rxmcs_lock);
2295 }
2296
2297 static int
2298 jme_change_mtu(struct net_device *netdev, int new_mtu)
2299 {
2300 struct jme_adapter *jme = netdev_priv(netdev);
2301
2302 WRITE_ONCE(netdev->mtu, new_mtu);
2303 netdev_update_features(netdev);
2304
2305 jme_restart_rx_engine(jme);
2306 jme_reset_link(jme);
2307
2308 return 0;
2309 }
2310
2311 static void
2312 jme_tx_timeout(struct net_device *netdev, unsigned int txqueue)
2313 {
2314 struct jme_adapter *jme = netdev_priv(netdev);
2315
2316 jme->phylink = 0;
2317 jme_reset_phy_processor(jme);
2318 if (test_bit(JME_FLAG_SSET, &jme->flags))
2319 jme_set_link_ksettings(netdev, &jme->old_cmd);
2320
2321 /*
2322 * Force to Reset the link again
2323 */
2324 jme_reset_link(jme);
2325 }
2326
2327 static void
2328 jme_get_drvinfo(struct net_device *netdev,
2329 struct ethtool_drvinfo *info)
2330 {
2331 struct jme_adapter *jme = netdev_priv(netdev);
2332
2333 strscpy(info->driver, DRV_NAME, sizeof(info->driver));
2334 strscpy(info->version, DRV_VERSION, sizeof(info->version));
2335 strscpy(info->bus_info, pci_name(jme->pdev), sizeof(info->bus_info));
2336 }
2337
2338 static int
2339 jme_get_regs_len(struct net_device *netdev)
2340 {
2341 return JME_REG_LEN;
2342 }
2343
2344 static void
2345 mmapio_memcpy(struct jme_adapter *jme, u32 *p, u32 reg, int len)
2346 {
2347 int i;
2348
2349 for (i = 0 ; i < len ; i += 4)
2350 p[i >> 2] = jread32(jme, reg + i);
2351 }
2352
2353 static void
2354 mdio_memcpy(struct jme_adapter *jme, u32 *p, int reg_nr)
2355 {
2356 int i;
2357 u16 *p16 = (u16 *)p;
2358
2359 for (i = 0 ; i < reg_nr ; ++i)
2360 p16[i] = jme_mdio_read(jme->dev, jme->mii_if.phy_id, i);
2361 }
2362
2363 static void
2364 jme_get_regs(struct net_device *netdev, struct ethtool_regs *regs, void *p)
2365 {
2366 struct jme_adapter *jme = netdev_priv(netdev);
2367 u32 *p32 = (u32 *)p;
2368
2369 memset(p, 0xFF, JME_REG_LEN);
2370
2371 regs->version = 1;
2372 mmapio_memcpy(jme, p32, JME_MAC, JME_MAC_LEN);
2373
2374 p32 += 0x100 >> 2;
2375 mmapio_memcpy(jme, p32, JME_PHY, JME_PHY_LEN);
2376
2377 p32 += 0x100 >> 2;
2378 mmapio_memcpy(jme, p32, JME_MISC, JME_MISC_LEN);
2379
2380 p32 += 0x100 >> 2;
2381 mmapio_memcpy(jme, p32, JME_RSS, JME_RSS_LEN);
2382
2383 p32 += 0x100 >> 2;
2384 mdio_memcpy(jme, p32, JME_PHY_REG_NR);
2385 }
2386
2387 static int jme_get_coalesce(struct net_device *netdev,
2388 struct ethtool_coalesce *ecmd,
2389 struct kernel_ethtool_coalesce *kernel_coal,
2390 struct netlink_ext_ack *extack)
2391 {
2392 struct jme_adapter *jme = netdev_priv(netdev);
2393
2394 ecmd->tx_coalesce_usecs = PCC_TX_TO;
2395 ecmd->tx_max_coalesced_frames = PCC_TX_CNT;
2396
2397 if (test_bit(JME_FLAG_POLL, &jme->flags)) {
2398 ecmd->use_adaptive_rx_coalesce = false;
2399 ecmd->rx_coalesce_usecs = 0;
2400 ecmd->rx_max_coalesced_frames = 0;
2401 return 0;
2402 }
2403
2404 ecmd->use_adaptive_rx_coalesce = true;
2405
2406 switch (jme->dpi.cur) {
2407 case PCC_P1:
2408 ecmd->rx_coalesce_usecs = PCC_P1_TO;
2409 ecmd->rx_max_coalesced_frames = PCC_P1_CNT;
2410 break;
2411 case PCC_P2:
2412 ecmd->rx_coalesce_usecs = PCC_P2_TO;
2413 ecmd->rx_max_coalesced_frames = PCC_P2_CNT;
2414 break;
2415 case PCC_P3:
2416 ecmd->rx_coalesce_usecs = PCC_P3_TO;
2417 ecmd->rx_max_coalesced_frames = PCC_P3_CNT;
2418 break;
2419 default:
2420 break;
2421 }
2422
2423 return 0;
2424 }
2425
2426 static int jme_set_coalesce(struct net_device *netdev,
2427 struct ethtool_coalesce *ecmd,
2428 struct kernel_ethtool_coalesce *kernel_coal,
2429 struct netlink_ext_ack *extack)
2430 {
2431 struct jme_adapter *jme = netdev_priv(netdev);
2432 struct dynpcc_info *dpi = &(jme->dpi);
2433
2434 if (netif_running(netdev))
2435 return -EBUSY;
2436
2437 if (ecmd->use_adaptive_rx_coalesce &&
2438 test_bit(JME_FLAG_POLL, &jme->flags)) {
2439 clear_bit(JME_FLAG_POLL, &jme->flags);
2440 jme->jme_rx = netif_rx;
2441 dpi->cur = PCC_P1;
2442 dpi->attempt = PCC_P1;
2443 dpi->cnt = 0;
2444 jme_set_rx_pcc(jme, PCC_P1);
2445 jme_interrupt_mode(jme);
2446 } else if (!(ecmd->use_adaptive_rx_coalesce) &&
2447 !(test_bit(JME_FLAG_POLL, &jme->flags))) {
2448 set_bit(JME_FLAG_POLL, &jme->flags);
2449 jme->jme_rx = netif_receive_skb;
2450 jme_interrupt_mode(jme);
2451 }
2452
2453 return 0;
2454 }
2455
2456 static void
2457 jme_get_pauseparam(struct net_device *netdev,
2458 struct ethtool_pauseparam *ecmd)
2459 {
2460 struct jme_adapter *jme = netdev_priv(netdev);
2461 u32 val;
2462
2463 ecmd->tx_pause = (jme->reg_txpfc & TXPFC_PF_EN) != 0;
2464 ecmd->rx_pause = (jme->reg_rxmcs & RXMCS_FLOWCTRL) != 0;
2465
2466 spin_lock_bh(&jme->phy_lock);
2467 val = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_ADVERTISE);
2468 spin_unlock_bh(&jme->phy_lock);
2469
2470 ecmd->autoneg =
2471 (val & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) != 0;
2472 }
2473
2474 static int
2475 jme_set_pauseparam(struct net_device *netdev,
2476 struct ethtool_pauseparam *ecmd)
2477 {
2478 struct jme_adapter *jme = netdev_priv(netdev);
2479 u32 val;
2480
2481 if (((jme->reg_txpfc & TXPFC_PF_EN) != 0) ^
2482 (ecmd->tx_pause != 0)) {
2483
2484 if (ecmd->tx_pause)
2485 jme->reg_txpfc |= TXPFC_PF_EN;
2486 else
2487 jme->reg_txpfc &= ~TXPFC_PF_EN;
2488
2489 jwrite32(jme, JME_TXPFC, jme->reg_txpfc);
2490 }
2491
2492 spin_lock_bh(&jme->rxmcs_lock);
2493 if (((jme->reg_rxmcs & RXMCS_FLOWCTRL) != 0) ^
2494 (ecmd->rx_pause != 0)) {
2495
2496 if (ecmd->rx_pause)
2497 jme->reg_rxmcs |= RXMCS_FLOWCTRL;
2498 else
2499 jme->reg_rxmcs &= ~RXMCS_FLOWCTRL;
2500
2501 jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2502 }
2503 spin_unlock_bh(&jme->rxmcs_lock);
2504
2505 spin_lock_bh(&jme->phy_lock);
2506 val = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_ADVERTISE);
2507 if (((val & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) != 0) ^
2508 (ecmd->autoneg != 0)) {
2509
2510 if (ecmd->autoneg)
2511 val |= (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
2512 else
2513 val &= ~(ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
2514
2515 jme_mdio_write(jme->dev, jme->mii_if.phy_id,
2516 MII_ADVERTISE, val);
2517 }
2518 spin_unlock_bh(&jme->phy_lock);
2519
2520 return 0;
2521 }
2522
2523 static void
2524 jme_get_wol(struct net_device *netdev,
2525 struct ethtool_wolinfo *wol)
2526 {
2527 struct jme_adapter *jme = netdev_priv(netdev);
2528
2529 wol->supported = WAKE_MAGIC | WAKE_PHY;
2530
2531 wol->wolopts = 0;
2532
2533 if (jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN))
2534 wol->wolopts |= WAKE_PHY;
2535
2536 if (jme->reg_pmcs & PMCS_MFEN)
2537 wol->wolopts |= WAKE_MAGIC;
2538
2539 }
2540
2541 static int
2542 jme_set_wol(struct net_device *netdev,
2543 struct ethtool_wolinfo *wol)
2544 {
2545 struct jme_adapter *jme = netdev_priv(netdev);
2546
2547 if (wol->wolopts & (WAKE_MAGICSECURE |
2548 WAKE_UCAST |
2549 WAKE_MCAST |
2550 WAKE_BCAST |
2551 WAKE_ARP))
2552 return -EOPNOTSUPP;
2553
2554 jme->reg_pmcs = 0;
2555
2556 if (wol->wolopts & WAKE_PHY)
2557 jme->reg_pmcs |= PMCS_LFEN | PMCS_LREN;
2558
2559 if (wol->wolopts & WAKE_MAGIC)
2560 jme->reg_pmcs |= PMCS_MFEN;
2561
2562 return 0;
2563 }
2564
2565 static int
2566 jme_get_link_ksettings(struct net_device *netdev,
2567 struct ethtool_link_ksettings *cmd)
2568 {
2569 struct jme_adapter *jme = netdev_priv(netdev);
2570
2571 spin_lock_bh(&jme->phy_lock);
2572 mii_ethtool_get_link_ksettings(&jme->mii_if, cmd);
2573 spin_unlock_bh(&jme->phy_lock);
2574 return 0;
2575 }
2576
2577 static int
2578 jme_set_link_ksettings(struct net_device *netdev,
2579 const struct ethtool_link_ksettings *cmd)
2580 {
2581 struct jme_adapter *jme = netdev_priv(netdev);
2582 int rc, fdc = 0;
2583
2584 if (cmd->base.speed == SPEED_1000 &&
2585 cmd->base.autoneg != AUTONEG_ENABLE)
2586 return -EINVAL;
2587
2588 /*
2589 * Check If user changed duplex only while force_media.
2590 * Hardware would not generate link change interrupt.
2591 */
2592 if (jme->mii_if.force_media &&
2593 cmd->base.autoneg != AUTONEG_ENABLE &&
2594 (jme->mii_if.full_duplex != cmd->base.duplex))
2595 fdc = 1;
2596
2597 spin_lock_bh(&jme->phy_lock);
2598 rc = mii_ethtool_set_link_ksettings(&jme->mii_if, cmd);
2599 spin_unlock_bh(&jme->phy_lock);
2600
2601 if (!rc) {
2602 if (fdc)
2603 jme_reset_link(jme);
2604 jme->old_cmd = *cmd;
2605 set_bit(JME_FLAG_SSET, &jme->flags);
2606 }
2607
2608 return rc;
2609 }
2610
2611 static int
2612 jme_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd)
2613 {
2614 int rc;
2615 struct jme_adapter *jme = netdev_priv(netdev);
2616 struct mii_ioctl_data *mii_data = if_mii(rq);
2617 unsigned int duplex_chg;
2618
2619 if (cmd == SIOCSMIIREG) {
2620 u16 val = mii_data->val_in;
2621 if (!(val & (BMCR_RESET|BMCR_ANENABLE)) &&
2622 (val & BMCR_SPEED1000))
2623 return -EINVAL;
2624 }
2625
2626 spin_lock_bh(&jme->phy_lock);
2627 rc = generic_mii_ioctl(&jme->mii_if, mii_data, cmd, &duplex_chg);
2628 spin_unlock_bh(&jme->phy_lock);
2629
2630 if (!rc && (cmd == SIOCSMIIREG)) {
2631 if (duplex_chg)
2632 jme_reset_link(jme);
2633 jme_get_link_ksettings(netdev, &jme->old_cmd);
2634 set_bit(JME_FLAG_SSET, &jme->flags);
2635 }
2636
2637 return rc;
2638 }
2639
2640 static u32
2641 jme_get_link(struct net_device *netdev)
2642 {
2643 struct jme_adapter *jme = netdev_priv(netdev);
2644 return jread32(jme, JME_PHY_LINK) & PHY_LINK_UP;
2645 }
2646
2647 static u32
2648 jme_get_msglevel(struct net_device *netdev)
2649 {
2650 struct jme_adapter *jme = netdev_priv(netdev);
2651 return jme->msg_enable;
2652 }
2653
2654 static void
2655 jme_set_msglevel(struct net_device *netdev, u32 value)
2656 {
2657 struct jme_adapter *jme = netdev_priv(netdev);
2658 jme->msg_enable = value;
2659 }
2660
2661 static netdev_features_t
2662 jme_fix_features(struct net_device *netdev, netdev_features_t features)
2663 {
2664 if (netdev->mtu > 1900)
2665 features &= ~(NETIF_F_ALL_TSO | NETIF_F_CSUM_MASK);
2666 return features;
2667 }
2668
2669 static int
2670 jme_set_features(struct net_device *netdev, netdev_features_t features)
2671 {
2672 struct jme_adapter *jme = netdev_priv(netdev);
2673
2674 spin_lock_bh(&jme->rxmcs_lock);
2675 if (features & NETIF_F_RXCSUM)
2676 jme->reg_rxmcs |= RXMCS_CHECKSUM;
2677 else
2678 jme->reg_rxmcs &= ~RXMCS_CHECKSUM;
2679 jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2680 spin_unlock_bh(&jme->rxmcs_lock);
2681
2682 return 0;
2683 }
2684
2685 #ifdef CONFIG_NET_POLL_CONTROLLER
2686 static void jme_netpoll(struct net_device *dev)
2687 {
2688 unsigned long flags;
2689
2690 local_irq_save(flags);
2691 jme_intr(dev->irq, dev);
2692 local_irq_restore(flags);
2693 }
2694 #endif
2695
2696 static int
2697 jme_nway_reset(struct net_device *netdev)
2698 {
2699 struct jme_adapter *jme = netdev_priv(netdev);
2700 jme_restart_an(jme);
2701 return 0;
2702 }
2703
2704 static u8
2705 jme_smb_read(struct jme_adapter *jme, unsigned int addr)
2706 {
2707 u32 val;
2708 int to;
2709
2710 val = jread32(jme, JME_SMBCSR);
2711 to = JME_SMB_BUSY_TIMEOUT;
2712 while ((val & SMBCSR_BUSY) && --to) {
2713 msleep(1);
2714 val = jread32(jme, JME_SMBCSR);
2715 }
2716 if (!to) {
2717 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2718 return 0xFF;
2719 }
2720
2721 jwrite32(jme, JME_SMBINTF,
2722 ((addr << SMBINTF_HWADDR_SHIFT) & SMBINTF_HWADDR) |
2723 SMBINTF_HWRWN_READ |
2724 SMBINTF_HWCMD);
2725
2726 val = jread32(jme, JME_SMBINTF);
2727 to = JME_SMB_BUSY_TIMEOUT;
2728 while ((val & SMBINTF_HWCMD) && --to) {
2729 msleep(1);
2730 val = jread32(jme, JME_SMBINTF);
2731 }
2732 if (!to) {
2733 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2734 return 0xFF;
2735 }
2736
2737 return (val & SMBINTF_HWDATR) >> SMBINTF_HWDATR_SHIFT;
2738 }
2739
2740 static void
2741 jme_smb_write(struct jme_adapter *jme, unsigned int addr, u8 data)
2742 {
2743 u32 val;
2744 int to;
2745
2746 val = jread32(jme, JME_SMBCSR);
2747 to = JME_SMB_BUSY_TIMEOUT;
2748 while ((val & SMBCSR_BUSY) && --to) {
2749 msleep(1);
2750 val = jread32(jme, JME_SMBCSR);
2751 }
2752 if (!to) {
2753 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2754 return;
2755 }
2756
2757 jwrite32(jme, JME_SMBINTF,
2758 ((data << SMBINTF_HWDATW_SHIFT) & SMBINTF_HWDATW) |
2759 ((addr << SMBINTF_HWADDR_SHIFT) & SMBINTF_HWADDR) |
2760 SMBINTF_HWRWN_WRITE |
2761 SMBINTF_HWCMD);
2762
2763 val = jread32(jme, JME_SMBINTF);
2764 to = JME_SMB_BUSY_TIMEOUT;
2765 while ((val & SMBINTF_HWCMD) && --to) {
2766 msleep(1);
2767 val = jread32(jme, JME_SMBINTF);
2768 }
2769 if (!to) {
2770 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2771 return;
2772 }
2773
2774 mdelay(2);
2775 }
2776
2777 static int
2778 jme_get_eeprom_len(struct net_device *netdev)
2779 {
2780 struct jme_adapter *jme = netdev_priv(netdev);
2781 u32 val;
2782 val = jread32(jme, JME_SMBCSR);
2783 return (val & SMBCSR_EEPROMD) ? JME_SMB_LEN : 0;
2784 }
2785
2786 static int
2787 jme_get_eeprom(struct net_device *netdev,
2788 struct ethtool_eeprom *eeprom, u8 *data)
2789 {
2790 struct jme_adapter *jme = netdev_priv(netdev);
2791 int i, offset = eeprom->offset, len = eeprom->len;
2792
2793 /*
2794 * ethtool will check the boundary for us
2795 */
2796 eeprom->magic = JME_EEPROM_MAGIC;
2797 for (i = 0 ; i < len ; ++i)
2798 data[i] = jme_smb_read(jme, i + offset);
2799
2800 return 0;
2801 }
2802
2803 static int
2804 jme_set_eeprom(struct net_device *netdev,
2805 struct ethtool_eeprom *eeprom, u8 *data)
2806 {
2807 struct jme_adapter *jme = netdev_priv(netdev);
2808 int i, offset = eeprom->offset, len = eeprom->len;
2809
2810 if (eeprom->magic != JME_EEPROM_MAGIC)
2811 return -EINVAL;
2812
2813 /*
2814 * ethtool will check the boundary for us
2815 */
2816 for (i = 0 ; i < len ; ++i)
2817 jme_smb_write(jme, i + offset, data[i]);
2818
2819 return 0;
2820 }
2821
2822 static const struct ethtool_ops jme_ethtool_ops = {
2823 .supported_coalesce_params = ETHTOOL_COALESCE_USECS |
2824 ETHTOOL_COALESCE_MAX_FRAMES |
2825 ETHTOOL_COALESCE_USE_ADAPTIVE_RX,
2826 .get_drvinfo = jme_get_drvinfo,
2827 .get_regs_len = jme_get_regs_len,
2828 .get_regs = jme_get_regs,
2829 .get_coalesce = jme_get_coalesce,
2830 .set_coalesce = jme_set_coalesce,
2831 .get_pauseparam = jme_get_pauseparam,
2832 .set_pauseparam = jme_set_pauseparam,
2833 .get_wol = jme_get_wol,
2834 .set_wol = jme_set_wol,
2835 .get_link = jme_get_link,
2836 .get_msglevel = jme_get_msglevel,
2837 .set_msglevel = jme_set_msglevel,
2838 .nway_reset = jme_nway_reset,
2839 .get_eeprom_len = jme_get_eeprom_len,
2840 .get_eeprom = jme_get_eeprom,
2841 .set_eeprom = jme_set_eeprom,
2842 .get_link_ksettings = jme_get_link_ksettings,
2843 .set_link_ksettings = jme_set_link_ksettings,
2844 };
2845
2846 static int
2847 jme_pci_dma64(struct pci_dev *pdev)
2848 {
2849 if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250 &&
2850 !dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)))
2851 return 1;
2852
2853 if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250 &&
2854 !dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(40)))
2855 return 1;
2856
2857 if (!dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
2858 return 0;
2859
2860 return -1;
2861 }
2862
2863 static inline void
2864 jme_phy_init(struct jme_adapter *jme)
2865 {
2866 u16 reg26;
2867
2868 reg26 = jme_mdio_read(jme->dev, jme->mii_if.phy_id, 26);
2869 jme_mdio_write(jme->dev, jme->mii_if.phy_id, 26, reg26 | 0x1000);
2870 }
2871
2872 static inline void
2873 jme_check_hw_ver(struct jme_adapter *jme)
2874 {
2875 u32 chipmode;
2876
2877 chipmode = jread32(jme, JME_CHIPMODE);
2878
2879 jme->fpgaver = (chipmode & CM_FPGAVER_MASK) >> CM_FPGAVER_SHIFT;
2880 jme->chiprev = (chipmode & CM_CHIPREV_MASK) >> CM_CHIPREV_SHIFT;
2881 jme->chip_main_rev = jme->chiprev & 0xF;
2882 jme->chip_sub_rev = (jme->chiprev >> 4) & 0xF;
2883 }
2884
2885 static const struct net_device_ops jme_netdev_ops = {
2886 .ndo_open = jme_open,
2887 .ndo_stop = jme_close,
2888 .ndo_validate_addr = eth_validate_addr,
2889 .ndo_eth_ioctl = jme_ioctl,
2890 .ndo_start_xmit = jme_start_xmit,
2891 .ndo_set_mac_address = jme_set_macaddr,
2892 .ndo_set_rx_mode = jme_set_multi,
2893 .ndo_change_mtu = jme_change_mtu,
2894 .ndo_tx_timeout = jme_tx_timeout,
2895 .ndo_fix_features = jme_fix_features,
2896 .ndo_set_features = jme_set_features,
2897 #ifdef CONFIG_NET_POLL_CONTROLLER
2898 .ndo_poll_controller = jme_netpoll,
2899 #endif
2900 };
2901
2902 static int
2903 jme_init_one(struct pci_dev *pdev,
2904 const struct pci_device_id *ent)
2905 {
2906 int rc = 0, using_dac, i;
2907 struct net_device *netdev;
2908 struct jme_adapter *jme;
2909 u16 bmcr, bmsr;
2910 u32 apmc;
2911
2912 /*
2913 * set up PCI device basics
2914 */
2915 pci_disable_link_state(pdev, PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1 |
2916 PCIE_LINK_STATE_CLKPM);
2917
2918 rc = pci_enable_device(pdev);
2919 if (rc) {
2920 pr_err("Cannot enable PCI device\n");
2921 goto err_out;
2922 }
2923
2924 using_dac = jme_pci_dma64(pdev);
2925 if (using_dac < 0) {
2926 pr_err("Cannot set PCI DMA Mask\n");
2927 rc = -EIO;
2928 goto err_out_disable_pdev;
2929 }
2930
2931 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
2932 pr_err("No PCI resource region found\n");
2933 rc = -ENOMEM;
2934 goto err_out_disable_pdev;
2935 }
2936
2937 rc = pci_request_regions(pdev, DRV_NAME);
2938 if (rc) {
2939 pr_err("Cannot obtain PCI resource region\n");
2940 goto err_out_disable_pdev;
2941 }
2942
2943 pci_set_master(pdev);
2944
2945 /*
2946 * alloc and init net device
2947 */
2948 netdev = alloc_etherdev(sizeof(*jme));
2949 if (!netdev) {
2950 rc = -ENOMEM;
2951 goto err_out_release_regions;
2952 }
2953 netdev->netdev_ops = &jme_netdev_ops;
2954 netdev->ethtool_ops = &jme_ethtool_ops;
2955 netdev->watchdog_timeo = TX_TIMEOUT;
2956 netdev->hw_features = NETIF_F_IP_CSUM |
2957 NETIF_F_IPV6_CSUM |
2958 NETIF_F_SG |
2959 NETIF_F_TSO |
2960 NETIF_F_TSO6 |
2961 NETIF_F_RXCSUM;
2962 netdev->features = NETIF_F_IP_CSUM |
2963 NETIF_F_IPV6_CSUM |
2964 NETIF_F_SG |
2965 NETIF_F_TSO |
2966 NETIF_F_TSO6 |
2967 NETIF_F_HW_VLAN_CTAG_TX |
2968 NETIF_F_HW_VLAN_CTAG_RX;
2969 if (using_dac)
2970 netdev->features |= NETIF_F_HIGHDMA;
2971
2972 /* MTU range: 1280 - 9202*/
2973 netdev->min_mtu = IPV6_MIN_MTU;
2974 netdev->max_mtu = MAX_ETHERNET_JUMBO_PACKET_SIZE - ETH_HLEN;
2975
2976 SET_NETDEV_DEV(netdev, &pdev->dev);
2977 pci_set_drvdata(pdev, netdev);
2978
2979 /*
2980 * init adapter info
2981 */
2982 jme = netdev_priv(netdev);
2983 jme->pdev = pdev;
2984 jme->dev = netdev;
2985 jme->jme_rx = netif_rx;
2986 jme->old_mtu = netdev->mtu = 1500;
2987 jme->phylink = 0;
2988 jme->tx_ring_size = 1 << 10;
2989 jme->tx_ring_mask = jme->tx_ring_size - 1;
2990 jme->tx_wake_threshold = 1 << 9;
2991 jme->rx_ring_size = 1 << 9;
2992 jme->rx_ring_mask = jme->rx_ring_size - 1;
2993 jme->msg_enable = JME_DEF_MSG_ENABLE;
2994 jme->regs = ioremap(pci_resource_start(pdev, 0),
2995 pci_resource_len(pdev, 0));
2996 if (!(jme->regs)) {
2997 pr_err("Mapping PCI resource region error\n");
2998 rc = -ENOMEM;
2999 goto err_out_free_netdev;
3000 }
3001
3002 if (no_pseudohp) {
3003 apmc = jread32(jme, JME_APMC) & ~JME_APMC_PSEUDO_HP_EN;
3004 jwrite32(jme, JME_APMC, apmc);
3005 } else if (force_pseudohp) {
3006 apmc = jread32(jme, JME_APMC) | JME_APMC_PSEUDO_HP_EN;
3007 jwrite32(jme, JME_APMC, apmc);
3008 }
3009
3010 netif_napi_add(netdev, &jme->napi, jme_poll);
3011
3012 spin_lock_init(&jme->phy_lock);
3013 spin_lock_init(&jme->macaddr_lock);
3014 spin_lock_init(&jme->rxmcs_lock);
3015
3016 atomic_set(&jme->link_changing, 1);
3017 atomic_set(&jme->rx_cleaning, 1);
3018 atomic_set(&jme->tx_cleaning, 1);
3019 atomic_set(&jme->rx_empty, 1);
3020
3021 tasklet_setup(&jme->pcc_task, jme_pcc_tasklet);
3022 INIT_WORK(&jme->linkch_task, jme_link_change_work);
3023 jme->dpi.cur = PCC_P1;
3024
3025 jme->reg_ghc = 0;
3026 jme->reg_rxcs = RXCS_DEFAULT;
3027 jme->reg_rxmcs = RXMCS_DEFAULT;
3028 jme->reg_txpfc = 0;
3029 jme->reg_pmcs = PMCS_MFEN;
3030 jme->reg_gpreg1 = GPREG1_DEFAULT;
3031
3032 if (jme->reg_rxmcs & RXMCS_CHECKSUM)
3033 netdev->features |= NETIF_F_RXCSUM;
3034
3035 /*
3036 * Get Max Read Req Size from PCI Config Space
3037 */
3038 pci_read_config_byte(pdev, PCI_DCSR_MRRS, &jme->mrrs);
3039 jme->mrrs &= PCI_DCSR_MRRS_MASK;
3040 switch (jme->mrrs) {
3041 case MRRS_128B:
3042 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_128B;
3043 break;
3044 case MRRS_256B:
3045 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_256B;
3046 break;
3047 default:
3048 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_512B;
3049 break;
3050 }
3051
3052 /*
3053 * Must check before reset_mac_processor
3054 */
3055 jme_check_hw_ver(jme);
3056 jme->mii_if.dev = netdev;
3057 if (jme->fpgaver) {
3058 jme->mii_if.phy_id = 0;
3059 for (i = 1 ; i < 32 ; ++i) {
3060 bmcr = jme_mdio_read(netdev, i, MII_BMCR);
3061 bmsr = jme_mdio_read(netdev, i, MII_BMSR);
3062 if (bmcr != 0xFFFFU && (bmcr != 0 || bmsr != 0)) {
3063 jme->mii_if.phy_id = i;
3064 break;
3065 }
3066 }
3067
3068 if (!jme->mii_if.phy_id) {
3069 rc = -EIO;
3070 pr_err("Can not find phy_id\n");
3071 goto err_out_unmap;
3072 }
3073
3074 jme->reg_ghc |= GHC_LINK_POLL;
3075 } else {
3076 jme->mii_if.phy_id = 1;
3077 }
3078 if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250)
3079 jme->mii_if.supports_gmii = true;
3080 else
3081 jme->mii_if.supports_gmii = false;
3082 jme->mii_if.phy_id_mask = 0x1F;
3083 jme->mii_if.reg_num_mask = 0x1F;
3084 jme->mii_if.mdio_read = jme_mdio_read;
3085 jme->mii_if.mdio_write = jme_mdio_write;
3086
3087 jme_clear_pm_disable_wol(jme);
3088 device_init_wakeup(&pdev->dev, true);
3089
3090 jme_set_phyfifo_5level(jme);
3091 jme->pcirev = pdev->revision;
3092 if (!jme->fpgaver)
3093 jme_phy_init(jme);
3094 jme_phy_off(jme);
3095
3096 /*
3097 * Reset MAC processor and reload EEPROM for MAC Address
3098 */
3099 jme_reset_mac_processor(jme);
3100 rc = jme_reload_eeprom(jme);
3101 if (rc) {
3102 pr_err("Reload eeprom for reading MAC Address error\n");
3103 goto err_out_unmap;
3104 }
3105 jme_load_macaddr(netdev);
3106
3107 /*
3108 * Tell stack that we are not ready to work until open()
3109 */
3110 netif_carrier_off(netdev);
3111
3112 rc = register_netdev(netdev);
3113 if (rc) {
3114 pr_err("Cannot register net device\n");
3115 goto err_out_unmap;
3116 }
3117
3118 netif_info(jme, probe, jme->dev, "%s%s chiprev:%x pcirev:%x macaddr:%pM\n",
3119 (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC250) ?
3120 "JMC250 Gigabit Ethernet" :
3121 (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC260) ?
3122 "JMC260 Fast Ethernet" : "Unknown",
3123 (jme->fpgaver != 0) ? " (FPGA)" : "",
3124 (jme->fpgaver != 0) ? jme->fpgaver : jme->chiprev,
3125 jme->pcirev, netdev->dev_addr);
3126
3127 return 0;
3128
3129 err_out_unmap:
3130 iounmap(jme->regs);
3131 err_out_free_netdev:
3132 free_netdev(netdev);
3133 err_out_release_regions:
3134 pci_release_regions(pdev);
3135 err_out_disable_pdev:
3136 pci_disable_device(pdev);
3137 err_out:
3138 return rc;
3139 }
3140
3141 static void
3142 jme_remove_one(struct pci_dev *pdev)
3143 {
3144 struct net_device *netdev = pci_get_drvdata(pdev);
3145 struct jme_adapter *jme = netdev_priv(netdev);
3146
3147 unregister_netdev(netdev);
3148 iounmap(jme->regs);
3149 free_netdev(netdev);
3150 pci_release_regions(pdev);
3151 pci_disable_device(pdev);
3152
3153 }
3154
3155 static void
3156 jme_shutdown(struct pci_dev *pdev)
3157 {
3158 struct net_device *netdev = pci_get_drvdata(pdev);
3159 struct jme_adapter *jme = netdev_priv(netdev);
3160
3161 jme_powersave_phy(jme);
3162 pci_pme_active(pdev, true);
3163 }
3164
3165 #ifdef CONFIG_PM_SLEEP
3166 static int
3167 jme_suspend(struct device *dev)
3168 {
3169 struct net_device *netdev = dev_get_drvdata(dev);
3170 struct jme_adapter *jme = netdev_priv(netdev);
3171
3172 if (!netif_running(netdev))
3173 return 0;
3174
3175 atomic_dec(&jme->link_changing);
3176
3177 netif_device_detach(netdev);
3178 netif_stop_queue(netdev);
3179 jme_stop_irq(jme);
3180
3181 tasklet_disable(&jme->txclean_task);
3182 tasklet_disable(&jme->rxclean_task);
3183 tasklet_disable(&jme->rxempty_task);
3184
3185 if (netif_carrier_ok(netdev)) {
3186 if (test_bit(JME_FLAG_POLL, &jme->flags))
3187 jme_polling_mode(jme);
3188
3189 jme_stop_pcc_timer(jme);
3190 jme_disable_rx_engine(jme);
3191 jme_disable_tx_engine(jme);
3192 jme_reset_mac_processor(jme);
3193 jme_free_rx_resources(jme);
3194 jme_free_tx_resources(jme);
3195 netif_carrier_off(netdev);
3196 jme->phylink = 0;
3197 }
3198
3199 tasklet_enable(&jme->txclean_task);
3200 tasklet_enable(&jme->rxclean_task);
3201 tasklet_enable(&jme->rxempty_task);
3202
3203 jme_powersave_phy(jme);
3204
3205 return 0;
3206 }
3207
3208 static int
3209 jme_resume(struct device *dev)
3210 {
3211 struct net_device *netdev = dev_get_drvdata(dev);
3212 struct jme_adapter *jme = netdev_priv(netdev);
3213
3214 if (!netif_running(netdev))
3215 return 0;
3216
3217 jme_clear_pm_disable_wol(jme);
3218 jme_phy_on(jme);
3219 if (test_bit(JME_FLAG_SSET, &jme->flags))
3220 jme_set_link_ksettings(netdev, &jme->old_cmd);
3221 else
3222 jme_reset_phy_processor(jme);
3223 jme_phy_calibration(jme);
3224 jme_phy_setEA(jme);
3225 netif_device_attach(netdev);
3226
3227 atomic_inc(&jme->link_changing);
3228
3229 jme_reset_link(jme);
3230
3231 jme_start_irq(jme);
3232
3233 return 0;
3234 }
3235
3236 static SIMPLE_DEV_PM_OPS(jme_pm_ops, jme_suspend, jme_resume);
3237 #define JME_PM_OPS (&jme_pm_ops)
3238
3239 #else
3240
3241 #define JME_PM_OPS NULL
3242 #endif
3243
3244 static const struct pci_device_id jme_pci_tbl[] = {
3245 { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMC250) },
3246 { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMC260) },
3247 { }
3248 };
3249
3250 static struct pci_driver jme_driver = {
3251 .name = DRV_NAME,
3252 .id_table = jme_pci_tbl,
3253 .probe = jme_init_one,
3254 .remove = jme_remove_one,
3255 .shutdown = jme_shutdown,
3256 .driver.pm = JME_PM_OPS,
3257 };
3258
3259 static int __init
3260 jme_init_module(void)
3261 {
3262 pr_info("JMicron JMC2XX ethernet driver version %s\n", DRV_VERSION);
3263 return pci_register_driver(&jme_driver);
3264 }
3265
3266 static void __exit
3267 jme_cleanup_module(void)
3268 {
3269 pci_unregister_driver(&jme_driver);
3270 }
3271
3272 module_init(jme_init_module);
3273 module_exit(jme_cleanup_module);
3274
3275 MODULE_AUTHOR("Guo-Fu Tseng <cooldavid@cooldavid.org>");
3276 MODULE_DESCRIPTION("JMicron JMC2x0 PCI Express Ethernet driver");
3277 MODULE_LICENSE("GPL");
3278 MODULE_VERSION(DRV_VERSION);
3279 MODULE_DEVICE_TABLE(pci, jme_pci_tbl);
Kernel DRM miscellaneous fixes and cross-tree changes