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jme: Fix compile warning introduced by new pm macro
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1/*
2 * JMicron JMC2x0 series PCIe Ethernet Linux Device Driver
3 *
4 * Copyright 2008 JMicron Technology Corporation
5 * http://www.jmicron.com/
6 * Copyright (c) 2009 - 2010 Guo-Fu Tseng <cooldavid@cooldavid.org>
7 *
8 * Author: Guo-Fu Tseng <cooldavid@cooldavid.org>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 *
23 */
24
25#include <linux/version.h>
26#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28)
27#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
28#endif
29
30#include <linux/module.h>
31#include <linux/kernel.h>
32#include <linux/pci.h>
33#include <linux/netdevice.h>
34#include <linux/etherdevice.h>
35#include <linux/ethtool.h>
36#include <linux/mii.h>
37#include <linux/crc32.h>
38#include <linux/delay.h>
39#include <linux/spinlock.h>
40#include <linux/in.h>
41#include <linux/ip.h>
42#include <linux/ipv6.h>
43#include <linux/tcp.h>
44#include <linux/udp.h>
45#include <linux/if_vlan.h>
46#include <linux/slab.h>
47#include <net/ip6_checksum.h>
48#include "jme.h"
49
50static int force_pseudohp = -1;
51static int no_pseudohp = -1;
52static int no_extplug = -1;
53module_param(force_pseudohp, int, 0);
54MODULE_PARM_DESC(force_pseudohp,
55 "Enable pseudo hot-plug feature manually by driver instead of BIOS.");
56module_param(no_pseudohp, int, 0);
57MODULE_PARM_DESC(no_pseudohp, "Disable pseudo hot-plug feature.");
58module_param(no_extplug, int, 0);
59MODULE_PARM_DESC(no_extplug,
60 "Do not use external plug signal for pseudo hot-plug.");
61
62static int
63jme_mdio_read(struct net_device *netdev, int phy, int reg)
64{
65 struct jme_adapter *jme = netdev_priv(netdev);
66 int i, val, again = (reg == MII_BMSR) ? 1 : 0;
67
68read_again:
69 jwrite32(jme, JME_SMI, SMI_OP_REQ |
70 smi_phy_addr(phy) |
71 smi_reg_addr(reg));
72
73 wmb();
74 for (i = JME_PHY_TIMEOUT * 50 ; i > 0 ; --i) {
75 udelay(20);
76 val = jread32(jme, JME_SMI);
77 if ((val & SMI_OP_REQ) == 0)
78 break;
79 }
80
81 if (i == 0) {
82 pr_err("phy(%d) read timeout : %d\n", phy, reg);
83 return 0;
84 }
85
86 if (again--)
87 goto read_again;
88
89 return (val & SMI_DATA_MASK) >> SMI_DATA_SHIFT;
90}
91
92static void
93jme_mdio_write(struct net_device *netdev,
94 int phy, int reg, int val)
95{
96 struct jme_adapter *jme = netdev_priv(netdev);
97 int i;
98
99 jwrite32(jme, JME_SMI, SMI_OP_WRITE | SMI_OP_REQ |
100 ((val << SMI_DATA_SHIFT) & SMI_DATA_MASK) |
101 smi_phy_addr(phy) | smi_reg_addr(reg));
102
103 wmb();
104 for (i = JME_PHY_TIMEOUT * 50 ; i > 0 ; --i) {
105 udelay(20);
106 if ((jread32(jme, JME_SMI) & SMI_OP_REQ) == 0)
107 break;
108 }
109
110 if (i == 0)
111 pr_err("phy(%d) write timeout : %d\n", phy, reg);
112}
113
114static inline void
115jme_reset_phy_processor(struct jme_adapter *jme)
116{
117 u32 val;
118
119 jme_mdio_write(jme->dev,
120 jme->mii_if.phy_id,
121 MII_ADVERTISE, ADVERTISE_ALL |
122 ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
123
124 if (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC250)
125 jme_mdio_write(jme->dev,
126 jme->mii_if.phy_id,
127 MII_CTRL1000,
128 ADVERTISE_1000FULL | ADVERTISE_1000HALF);
129
130 val = jme_mdio_read(jme->dev,
131 jme->mii_if.phy_id,
132 MII_BMCR);
133
134 jme_mdio_write(jme->dev,
135 jme->mii_if.phy_id,
136 MII_BMCR, val | BMCR_RESET);
137}
138
139static void
140jme_setup_wakeup_frame(struct jme_adapter *jme,
141 const u32 *mask, u32 crc, int fnr)
142{
143 int i;
144
145 /*
146 * Setup CRC pattern
147 */
148 jwrite32(jme, JME_WFOI, WFOI_CRC_SEL | (fnr & WFOI_FRAME_SEL));
149 wmb();
150 jwrite32(jme, JME_WFODP, crc);
151 wmb();
152
153 /*
154 * Setup Mask
155 */
156 for (i = 0 ; i < WAKEUP_FRAME_MASK_DWNR ; ++i) {
157 jwrite32(jme, JME_WFOI,
158 ((i << WFOI_MASK_SHIFT) & WFOI_MASK_SEL) |
159 (fnr & WFOI_FRAME_SEL));
160 wmb();
161 jwrite32(jme, JME_WFODP, mask[i]);
162 wmb();
163 }
164}
165
166static inline void
167jme_mac_rxclk_off(struct jme_adapter *jme)
168{
169 jme->reg_gpreg1 |= GPREG1_RXCLKOFF;
170 jwrite32f(jme, JME_GPREG1, jme->reg_gpreg1);
171}
172
173static inline void
174jme_mac_rxclk_on(struct jme_adapter *jme)
175{
176 jme->reg_gpreg1 &= ~GPREG1_RXCLKOFF;
177 jwrite32f(jme, JME_GPREG1, jme->reg_gpreg1);
178}
179
180static inline void
181jme_mac_txclk_off(struct jme_adapter *jme)
182{
183 jme->reg_ghc &= ~(GHC_TO_CLK_SRC | GHC_TXMAC_CLK_SRC);
184 jwrite32f(jme, JME_GHC, jme->reg_ghc);
185}
186
187static inline void
188jme_mac_txclk_on(struct jme_adapter *jme)
189{
190 u32 speed = jme->reg_ghc & GHC_SPEED;
191 if (speed == GHC_SPEED_1000M)
192 jme->reg_ghc |= GHC_TO_CLK_GPHY | GHC_TXMAC_CLK_GPHY;
193 else
194 jme->reg_ghc |= GHC_TO_CLK_PCIE | GHC_TXMAC_CLK_PCIE;
195 jwrite32f(jme, JME_GHC, jme->reg_ghc);
196}
197
198static inline void
199jme_reset_ghc_speed(struct jme_adapter *jme)
200{
201 jme->reg_ghc &= ~(GHC_SPEED | GHC_DPX);
202 jwrite32f(jme, JME_GHC, jme->reg_ghc);
203}
204
205static inline void
206jme_reset_250A2_workaround(struct jme_adapter *jme)
207{
208 jme->reg_gpreg1 &= ~(GPREG1_HALFMODEPATCH |
209 GPREG1_RSSPATCH);
210 jwrite32(jme, JME_GPREG1, jme->reg_gpreg1);
211}
212
213static inline void
214jme_assert_ghc_reset(struct jme_adapter *jme)
215{
216 jme->reg_ghc |= GHC_SWRST;
217 jwrite32f(jme, JME_GHC, jme->reg_ghc);
218}
219
220static inline void
221jme_clear_ghc_reset(struct jme_adapter *jme)
222{
223 jme->reg_ghc &= ~GHC_SWRST;
224 jwrite32f(jme, JME_GHC, jme->reg_ghc);
225}
226
227static inline void
228jme_reset_mac_processor(struct jme_adapter *jme)
229{
230 static const u32 mask[WAKEUP_FRAME_MASK_DWNR] = {0, 0, 0, 0};
231 u32 crc = 0xCDCDCDCD;
232 u32 gpreg0;
233 int i;
234
235 jme_reset_ghc_speed(jme);
236 jme_reset_250A2_workaround(jme);
237
238 jme_mac_rxclk_on(jme);
239 jme_mac_txclk_on(jme);
240 udelay(1);
241 jme_assert_ghc_reset(jme);
242 udelay(1);
243 jme_mac_rxclk_off(jme);
244 jme_mac_txclk_off(jme);
245 udelay(1);
246 jme_clear_ghc_reset(jme);
247 udelay(1);
248 jme_mac_rxclk_on(jme);
249 jme_mac_txclk_on(jme);
250 udelay(1);
251 jme_mac_rxclk_off(jme);
252 jme_mac_txclk_off(jme);
253
254 jwrite32(jme, JME_RXDBA_LO, 0x00000000);
255 jwrite32(jme, JME_RXDBA_HI, 0x00000000);
256 jwrite32(jme, JME_RXQDC, 0x00000000);
257 jwrite32(jme, JME_RXNDA, 0x00000000);
258 jwrite32(jme, JME_TXDBA_LO, 0x00000000);
259 jwrite32(jme, JME_TXDBA_HI, 0x00000000);
260 jwrite32(jme, JME_TXQDC, 0x00000000);
261 jwrite32(jme, JME_TXNDA, 0x00000000);
262
263 jwrite32(jme, JME_RXMCHT_LO, 0x00000000);
264 jwrite32(jme, JME_RXMCHT_HI, 0x00000000);
265 for (i = 0 ; i < WAKEUP_FRAME_NR ; ++i)
266 jme_setup_wakeup_frame(jme, mask, crc, i);
267 if (jme->fpgaver)
268 gpreg0 = GPREG0_DEFAULT | GPREG0_LNKINTPOLL;
269 else
270 gpreg0 = GPREG0_DEFAULT;
271 jwrite32(jme, JME_GPREG0, gpreg0);
272}
273
274static inline void
275jme_clear_pm(struct jme_adapter *jme)
276{
277 jwrite32(jme, JME_PMCS, 0xFFFF0000 | jme->reg_pmcs);
278 pci_set_power_state(jme->pdev, PCI_D0);
279#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,26)
280 pci_enable_wake(jme->pdev, PCI_D0, false);
281#else
282 device_set_wakeup_enable(&jme->pdev->dev, false);
283#endif
284}
285
286static int
287jme_reload_eeprom(struct jme_adapter *jme)
288{
289 u32 val;
290 int i;
291
292 val = jread32(jme, JME_SMBCSR);
293
294 if (val & SMBCSR_EEPROMD) {
295 val |= SMBCSR_CNACK;
296 jwrite32(jme, JME_SMBCSR, val);
297 val |= SMBCSR_RELOAD;
298 jwrite32(jme, JME_SMBCSR, val);
299 mdelay(12);
300
301 for (i = JME_EEPROM_RELOAD_TIMEOUT; i > 0; --i) {
302 mdelay(1);
303 if ((jread32(jme, JME_SMBCSR) & SMBCSR_RELOAD) == 0)
304 break;
305 }
306
307 if (i == 0) {
308 pr_err("eeprom reload timeout\n");
309 return -EIO;
310 }
311 }
312
313 return 0;
314}
315
316static void
317jme_load_macaddr(struct net_device *netdev)
318{
319 struct jme_adapter *jme = netdev_priv(netdev);
320 unsigned char macaddr[6];
321 u32 val;
322
323 spin_lock_bh(&jme->macaddr_lock);
324 val = jread32(jme, JME_RXUMA_LO);
325 macaddr[0] = (val >> 0) & 0xFF;
326 macaddr[1] = (val >> 8) & 0xFF;
327 macaddr[2] = (val >> 16) & 0xFF;
328 macaddr[3] = (val >> 24) & 0xFF;
329 val = jread32(jme, JME_RXUMA_HI);
330 macaddr[4] = (val >> 0) & 0xFF;
331 macaddr[5] = (val >> 8) & 0xFF;
332 memcpy(netdev->dev_addr, macaddr, 6);
333 spin_unlock_bh(&jme->macaddr_lock);
334}
335
336static inline void
337jme_set_rx_pcc(struct jme_adapter *jme, int p)
338{
339 switch (p) {
340 case PCC_OFF:
341 jwrite32(jme, JME_PCCRX0,
342 ((PCC_OFF_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
343 ((PCC_OFF_CNT << PCCRX_SHIFT) & PCCRX_MASK));
344 break;
345 case PCC_P1:
346 jwrite32(jme, JME_PCCRX0,
347 ((PCC_P1_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
348 ((PCC_P1_CNT << PCCRX_SHIFT) & PCCRX_MASK));
349 break;
350 case PCC_P2:
351 jwrite32(jme, JME_PCCRX0,
352 ((PCC_P2_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
353 ((PCC_P2_CNT << PCCRX_SHIFT) & PCCRX_MASK));
354 break;
355 case PCC_P3:
356 jwrite32(jme, JME_PCCRX0,
357 ((PCC_P3_TO << PCCRXTO_SHIFT) & PCCRXTO_MASK) |
358 ((PCC_P3_CNT << PCCRX_SHIFT) & PCCRX_MASK));
359 break;
360 default:
361 break;
362 }
363 wmb();
364
365 if (!(test_bit(JME_FLAG_POLL, &jme->flags)))
366 netif_info(jme, rx_status, jme->dev, "Switched to PCC_P%d\n", p);
367}
368
369static void
370jme_start_irq(struct jme_adapter *jme)
371{
372 register struct dynpcc_info *dpi = &(jme->dpi);
373
374 jme_set_rx_pcc(jme, PCC_P1);
375 dpi->cur = PCC_P1;
376 dpi->attempt = PCC_P1;
377 dpi->cnt = 0;
378
379 jwrite32(jme, JME_PCCTX,
380 ((PCC_TX_TO << PCCTXTO_SHIFT) & PCCTXTO_MASK) |
381 ((PCC_TX_CNT << PCCTX_SHIFT) & PCCTX_MASK) |
382 PCCTXQ0_EN
383 );
384
385 /*
386 * Enable Interrupts
387 */
388 jwrite32(jme, JME_IENS, INTR_ENABLE);
389}
390
391static inline void
392jme_stop_irq(struct jme_adapter *jme)
393{
394 /*
395 * Disable Interrupts
396 */
397 jwrite32f(jme, JME_IENC, INTR_ENABLE);
398}
399
400static u32
401jme_linkstat_from_phy(struct jme_adapter *jme)
402{
403 u32 phylink, bmsr;
404
405 phylink = jme_mdio_read(jme->dev, jme->mii_if.phy_id, 17);
406 bmsr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMSR);
407 if (bmsr & BMSR_ANCOMP)
408 phylink |= PHY_LINK_AUTONEG_COMPLETE;
409
410 return phylink;
411}
412
413static inline void
414jme_set_phyfifo_5level(struct jme_adapter *jme)
415{
416 jme_mdio_write(jme->dev, jme->mii_if.phy_id, 27, 0x0004);
417}
418
419static inline void
420jme_set_phyfifo_8level(struct jme_adapter *jme)
421{
422 jme_mdio_write(jme->dev, jme->mii_if.phy_id, 27, 0x0000);
423}
424
425static int
426jme_check_link(struct net_device *netdev, int testonly)
427{
428 struct jme_adapter *jme = netdev_priv(netdev);
429 u32 phylink, cnt = JME_SPDRSV_TIMEOUT, bmcr;
430 char linkmsg[64];
431 int rc = 0;
432
433 linkmsg[0] = '\0';
434
435 if (jme->fpgaver)
436 phylink = jme_linkstat_from_phy(jme);
437 else
438 phylink = jread32(jme, JME_PHY_LINK);
439
440 if (phylink & PHY_LINK_UP) {
441 if (!(phylink & PHY_LINK_AUTONEG_COMPLETE)) {
442 /*
443 * If we did not enable AN
444 * Speed/Duplex Info should be obtained from SMI
445 */
446 phylink = PHY_LINK_UP;
447
448 bmcr = jme_mdio_read(jme->dev,
449 jme->mii_if.phy_id,
450 MII_BMCR);
451
452 phylink |= ((bmcr & BMCR_SPEED1000) &&
453 (bmcr & BMCR_SPEED100) == 0) ?
454 PHY_LINK_SPEED_1000M :
455 (bmcr & BMCR_SPEED100) ?
456 PHY_LINK_SPEED_100M :
457 PHY_LINK_SPEED_10M;
458
459 phylink |= (bmcr & BMCR_FULLDPLX) ?
460 PHY_LINK_DUPLEX : 0;
461
462 strcat(linkmsg, "Forced: ");
463 } else {
464 /*
465 * Keep polling for speed/duplex resolve complete
466 */
467 while (!(phylink & PHY_LINK_SPEEDDPU_RESOLVED) &&
468 --cnt) {
469
470 udelay(1);
471
472 if (jme->fpgaver)
473 phylink = jme_linkstat_from_phy(jme);
474 else
475 phylink = jread32(jme, JME_PHY_LINK);
476 }
477 if (!cnt)
478 pr_err("Waiting speed resolve timeout\n");
479
480 strcat(linkmsg, "ANed: ");
481 }
482
483 if (jme->phylink == phylink) {
484 rc = 1;
485 goto out;
486 }
487 if (testonly)
488 goto out;
489
490 jme->phylink = phylink;
491
492 /*
493 * The speed/duplex setting of jme->reg_ghc already cleared
494 * by jme_reset_mac_processor()
495 */
496 switch (phylink & PHY_LINK_SPEED_MASK) {
497 case PHY_LINK_SPEED_10M:
498 jme->reg_ghc |= GHC_SPEED_10M;
499 strcat(linkmsg, "10 Mbps, ");
500 break;
501 case PHY_LINK_SPEED_100M:
502 jme->reg_ghc |= GHC_SPEED_100M;
503 strcat(linkmsg, "100 Mbps, ");
504 break;
505 case PHY_LINK_SPEED_1000M:
506 jme->reg_ghc |= GHC_SPEED_1000M;
507 strcat(linkmsg, "1000 Mbps, ");
508 break;
509 default:
510 break;
511 }
512
513 if (phylink & PHY_LINK_DUPLEX) {
514 jwrite32(jme, JME_TXMCS, TXMCS_DEFAULT);
515 jwrite32(jme, JME_TXTRHD, TXTRHD_FULLDUPLEX);
516 jme->reg_ghc |= GHC_DPX;
517 } else {
518 jwrite32(jme, JME_TXMCS, TXMCS_DEFAULT |
519 TXMCS_BACKOFF |
520 TXMCS_CARRIERSENSE |
521 TXMCS_COLLISION);
522 jwrite32(jme, JME_TXTRHD, TXTRHD_HALFDUPLEX);
523 }
524
525 jwrite32(jme, JME_GHC, jme->reg_ghc);
526
527 if (is_buggy250(jme->pdev->device, jme->chiprev)) {
528 jme->reg_gpreg1 &= ~(GPREG1_HALFMODEPATCH |
529 GPREG1_RSSPATCH);
530 if (!(phylink & PHY_LINK_DUPLEX))
531 jme->reg_gpreg1 |= GPREG1_HALFMODEPATCH;
532 switch (phylink & PHY_LINK_SPEED_MASK) {
533 case PHY_LINK_SPEED_10M:
534 jme_set_phyfifo_8level(jme);
535 jme->reg_gpreg1 |= GPREG1_RSSPATCH;
536 break;
537 case PHY_LINK_SPEED_100M:
538 jme_set_phyfifo_5level(jme);
539 jme->reg_gpreg1 |= GPREG1_RSSPATCH;
540 break;
541 case PHY_LINK_SPEED_1000M:
542 jme_set_phyfifo_8level(jme);
543 break;
544 default:
545 break;
546 }
547 }
548 jwrite32(jme, JME_GPREG1, jme->reg_gpreg1);
549
550 strcat(linkmsg, (phylink & PHY_LINK_DUPLEX) ?
551 "Full-Duplex, " :
552 "Half-Duplex, ");
553 strcat(linkmsg, (phylink & PHY_LINK_MDI_STAT) ?
554 "MDI-X" :
555 "MDI");
556 netif_info(jme, link, jme->dev, "Link is up at %s\n", linkmsg);
557 netif_carrier_on(netdev);
558 } else {
559 if (testonly)
560 goto out;
561
562 netif_info(jme, link, jme->dev, "Link is down\n");
563 jme->phylink = 0;
564 netif_carrier_off(netdev);
565 }
566
567out:
568 return rc;
569}
570
571static int
572jme_setup_tx_resources(struct jme_adapter *jme)
573{
574 struct jme_ring *txring = &(jme->txring[0]);
575
576 txring->alloc = dma_alloc_coherent(&(jme->pdev->dev),
577 TX_RING_ALLOC_SIZE(jme->tx_ring_size),
578 &(txring->dmaalloc),
579 GFP_ATOMIC);
580
581 if (!txring->alloc)
582 goto err_set_null;
583
584 /*
585 * 16 Bytes align
586 */
587 txring->desc = (void *)ALIGN((unsigned long)(txring->alloc),
588 RING_DESC_ALIGN);
589 txring->dma = ALIGN(txring->dmaalloc, RING_DESC_ALIGN);
590 txring->next_to_use = 0;
591 atomic_set(&txring->next_to_clean, 0);
592 atomic_set(&txring->nr_free, jme->tx_ring_size);
593
594 txring->bufinf = kmalloc(sizeof(struct jme_buffer_info) *
595 jme->tx_ring_size, GFP_ATOMIC);
596 if (unlikely(!(txring->bufinf)))
597 goto err_free_txring;
598
599 /*
600 * Initialize Transmit Descriptors
601 */
602 memset(txring->alloc, 0, TX_RING_ALLOC_SIZE(jme->tx_ring_size));
603 memset(txring->bufinf, 0,
604 sizeof(struct jme_buffer_info) * jme->tx_ring_size);
605
606 return 0;
607
608err_free_txring:
609 dma_free_coherent(&(jme->pdev->dev),
610 TX_RING_ALLOC_SIZE(jme->tx_ring_size),
611 txring->alloc,
612 txring->dmaalloc);
613
614err_set_null:
615 txring->desc = NULL;
616 txring->dmaalloc = 0;
617 txring->dma = 0;
618 txring->bufinf = NULL;
619
620 return -ENOMEM;
621}
622
623static void
624jme_free_tx_resources(struct jme_adapter *jme)
625{
626 int i;
627 struct jme_ring *txring = &(jme->txring[0]);
628 struct jme_buffer_info *txbi;
629
630 if (txring->alloc) {
631 if (txring->bufinf) {
632 for (i = 0 ; i < jme->tx_ring_size ; ++i) {
633 txbi = txring->bufinf + i;
634 if (txbi->skb) {
635 dev_kfree_skb(txbi->skb);
636 txbi->skb = NULL;
637 }
638 txbi->mapping = 0;
639 txbi->len = 0;
640 txbi->nr_desc = 0;
641 txbi->start_xmit = 0;
642 }
643 kfree(txring->bufinf);
644 }
645
646 dma_free_coherent(&(jme->pdev->dev),
647 TX_RING_ALLOC_SIZE(jme->tx_ring_size),
648 txring->alloc,
649 txring->dmaalloc);
650
651 txring->alloc = NULL;
652 txring->desc = NULL;
653 txring->dmaalloc = 0;
654 txring->dma = 0;
655 txring->bufinf = NULL;
656 }
657 txring->next_to_use = 0;
658 atomic_set(&txring->next_to_clean, 0);
659 atomic_set(&txring->nr_free, 0);
660}
661
662static inline void
663jme_enable_tx_engine(struct jme_adapter *jme)
664{
665 /*
666 * Select Queue 0
667 */
668 jwrite32(jme, JME_TXCS, TXCS_DEFAULT | TXCS_SELECT_QUEUE0);
669 wmb();
670
671 /*
672 * Setup TX Queue 0 DMA Bass Address
673 */
674 jwrite32(jme, JME_TXDBA_LO, (__u64)jme->txring[0].dma & 0xFFFFFFFFUL);
675 jwrite32(jme, JME_TXDBA_HI, (__u64)(jme->txring[0].dma) >> 32);
676 jwrite32(jme, JME_TXNDA, (__u64)jme->txring[0].dma & 0xFFFFFFFFUL);
677
678 /*
679 * Setup TX Descptor Count
680 */
681 jwrite32(jme, JME_TXQDC, jme->tx_ring_size);
682
683 /*
684 * Enable TX Engine
685 */
686 wmb();
687 jwrite32f(jme, JME_TXCS, jme->reg_txcs |
688 TXCS_SELECT_QUEUE0 |
689 TXCS_ENABLE);
690
691 /*
692 * Start clock for TX MAC Processor
693 */
694 jme_mac_txclk_on(jme);
695}
696
697static inline void
698jme_restart_tx_engine(struct jme_adapter *jme)
699{
700 /*
701 * Restart TX Engine
702 */
703 jwrite32(jme, JME_TXCS, jme->reg_txcs |
704 TXCS_SELECT_QUEUE0 |
705 TXCS_ENABLE);
706}
707
708static inline void
709jme_disable_tx_engine(struct jme_adapter *jme)
710{
711 int i;
712 u32 val;
713
714 /*
715 * Disable TX Engine
716 */
717 jwrite32(jme, JME_TXCS, jme->reg_txcs | TXCS_SELECT_QUEUE0);
718 wmb();
719
720 val = jread32(jme, JME_TXCS);
721 for (i = JME_TX_DISABLE_TIMEOUT ; (val & TXCS_ENABLE) && i > 0 ; --i) {
722 mdelay(1);
723 val = jread32(jme, JME_TXCS);
724 rmb();
725 }
726
727 if (!i)
728 pr_err("Disable TX engine timeout\n");
729
730 /*
731 * Stop clock for TX MAC Processor
732 */
733 jme_mac_txclk_off(jme);
734}
735
736static void
737jme_set_clean_rxdesc(struct jme_adapter *jme, int i)
738{
739 struct jme_ring *rxring = &(jme->rxring[0]);
740 register struct rxdesc *rxdesc = rxring->desc;
741 struct jme_buffer_info *rxbi = rxring->bufinf;
742 rxdesc += i;
743 rxbi += i;
744
745 rxdesc->dw[0] = 0;
746 rxdesc->dw[1] = 0;
747 rxdesc->desc1.bufaddrh = cpu_to_le32((__u64)rxbi->mapping >> 32);
748 rxdesc->desc1.bufaddrl = cpu_to_le32(
749 (__u64)rxbi->mapping & 0xFFFFFFFFUL);
750 rxdesc->desc1.datalen = cpu_to_le16(rxbi->len);
751 if (jme->dev->features & NETIF_F_HIGHDMA)
752 rxdesc->desc1.flags = RXFLAG_64BIT;
753 wmb();
754 rxdesc->desc1.flags |= RXFLAG_OWN | RXFLAG_INT;
755}
756
757static int
758jme_make_new_rx_buf(struct jme_adapter *jme, int i)
759{
760 struct jme_ring *rxring = &(jme->rxring[0]);
761 struct jme_buffer_info *rxbi = rxring->bufinf + i;
762 struct sk_buff *skb;
763
764 skb = netdev_alloc_skb(jme->dev,
765 jme->dev->mtu + RX_EXTRA_LEN);
766 if (unlikely(!skb))
767 return -ENOMEM;
768#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
769 skb->dev = jme->dev;
770#endif
771
772 rxbi->skb = skb;
773 rxbi->len = skb_tailroom(skb);
774 rxbi->mapping = pci_map_page(jme->pdev,
775 virt_to_page(skb->data),
776 offset_in_page(skb->data),
777 rxbi->len,
778 PCI_DMA_FROMDEVICE);
779
780 return 0;
781}
782
783static void
784jme_free_rx_buf(struct jme_adapter *jme, int i)
785{
786 struct jme_ring *rxring = &(jme->rxring[0]);
787 struct jme_buffer_info *rxbi = rxring->bufinf;
788 rxbi += i;
789
790 if (rxbi->skb) {
791 pci_unmap_page(jme->pdev,
792 rxbi->mapping,
793 rxbi->len,
794 PCI_DMA_FROMDEVICE);
795 dev_kfree_skb(rxbi->skb);
796 rxbi->skb = NULL;
797 rxbi->mapping = 0;
798 rxbi->len = 0;
799 }
800}
801
802static void
803jme_free_rx_resources(struct jme_adapter *jme)
804{
805 int i;
806 struct jme_ring *rxring = &(jme->rxring[0]);
807
808 if (rxring->alloc) {
809 if (rxring->bufinf) {
810 for (i = 0 ; i < jme->rx_ring_size ; ++i)
811 jme_free_rx_buf(jme, i);
812 kfree(rxring->bufinf);
813 }
814
815 dma_free_coherent(&(jme->pdev->dev),
816 RX_RING_ALLOC_SIZE(jme->rx_ring_size),
817 rxring->alloc,
818 rxring->dmaalloc);
819 rxring->alloc = NULL;
820 rxring->desc = NULL;
821 rxring->dmaalloc = 0;
822 rxring->dma = 0;
823 rxring->bufinf = NULL;
824 }
825 rxring->next_to_use = 0;
826 atomic_set(&rxring->next_to_clean, 0);
827}
828
829static int
830jme_setup_rx_resources(struct jme_adapter *jme)
831{
832 int i;
833 struct jme_ring *rxring = &(jme->rxring[0]);
834
835 rxring->alloc = dma_alloc_coherent(&(jme->pdev->dev),
836 RX_RING_ALLOC_SIZE(jme->rx_ring_size),
837 &(rxring->dmaalloc),
838 GFP_ATOMIC);
839 if (!rxring->alloc)
840 goto err_set_null;
841
842 /*
843 * 16 Bytes align
844 */
845 rxring->desc = (void *)ALIGN((unsigned long)(rxring->alloc),
846 RING_DESC_ALIGN);
847 rxring->dma = ALIGN(rxring->dmaalloc, RING_DESC_ALIGN);
848 rxring->next_to_use = 0;
849 atomic_set(&rxring->next_to_clean, 0);
850
851 rxring->bufinf = kmalloc(sizeof(struct jme_buffer_info) *
852 jme->rx_ring_size, GFP_ATOMIC);
853 if (unlikely(!(rxring->bufinf)))
854 goto err_free_rxring;
855
856 /*
857 * Initiallize Receive Descriptors
858 */
859 memset(rxring->bufinf, 0,
860 sizeof(struct jme_buffer_info) * jme->rx_ring_size);
861 for (i = 0 ; i < jme->rx_ring_size ; ++i) {
862 if (unlikely(jme_make_new_rx_buf(jme, i))) {
863 jme_free_rx_resources(jme);
864 return -ENOMEM;
865 }
866
867 jme_set_clean_rxdesc(jme, i);
868 }
869
870 return 0;
871
872err_free_rxring:
873 dma_free_coherent(&(jme->pdev->dev),
874 RX_RING_ALLOC_SIZE(jme->rx_ring_size),
875 rxring->alloc,
876 rxring->dmaalloc);
877err_set_null:
878 rxring->desc = NULL;
879 rxring->dmaalloc = 0;
880 rxring->dma = 0;
881 rxring->bufinf = NULL;
882
883 return -ENOMEM;
884}
885
886static inline void
887jme_enable_rx_engine(struct jme_adapter *jme)
888{
889 /*
890 * Select Queue 0
891 */
892 jwrite32(jme, JME_RXCS, jme->reg_rxcs |
893 RXCS_QUEUESEL_Q0);
894 wmb();
895
896 /*
897 * Setup RX DMA Bass Address
898 */
899 jwrite32(jme, JME_RXDBA_LO, (__u64)(jme->rxring[0].dma) & 0xFFFFFFFFUL);
900 jwrite32(jme, JME_RXDBA_HI, (__u64)(jme->rxring[0].dma) >> 32);
901 jwrite32(jme, JME_RXNDA, (__u64)(jme->rxring[0].dma) & 0xFFFFFFFFUL);
902
903 /*
904 * Setup RX Descriptor Count
905 */
906 jwrite32(jme, JME_RXQDC, jme->rx_ring_size);
907
908 /*
909 * Setup Unicast Filter
910 */
911 jme_set_unicastaddr(jme->dev);
912 jme_set_multi(jme->dev);
913
914 /*
915 * Enable RX Engine
916 */
917 wmb();
918 jwrite32f(jme, JME_RXCS, jme->reg_rxcs |
919 RXCS_QUEUESEL_Q0 |
920 RXCS_ENABLE |
921 RXCS_QST);
922
923 /*
924 * Start clock for RX MAC Processor
925 */
926 jme_mac_rxclk_on(jme);
927}
928
929static inline void
930jme_restart_rx_engine(struct jme_adapter *jme)
931{
932 /*
933 * Start RX Engine
934 */
935 jwrite32(jme, JME_RXCS, jme->reg_rxcs |
936 RXCS_QUEUESEL_Q0 |
937 RXCS_ENABLE |
938 RXCS_QST);
939}
940
941static inline void
942jme_disable_rx_engine(struct jme_adapter *jme)
943{
944 int i;
945 u32 val;
946
947 /*
948 * Disable RX Engine
949 */
950 jwrite32(jme, JME_RXCS, jme->reg_rxcs);
951 wmb();
952
953 val = jread32(jme, JME_RXCS);
954 for (i = JME_RX_DISABLE_TIMEOUT ; (val & RXCS_ENABLE) && i > 0 ; --i) {
955 mdelay(1);
956 val = jread32(jme, JME_RXCS);
957 rmb();
958 }
959
960 if (!i)
961 pr_err("Disable RX engine timeout\n");
962
963 /*
964 * Stop clock for RX MAC Processor
965 */
966 jme_mac_rxclk_off(jme);
967}
968
969static u16
970jme_udpsum(struct sk_buff *skb)
971{
972 u16 csum = 0xFFFFu;
973
974 if (skb->len < (ETH_HLEN + sizeof(struct iphdr)))
975 return csum;
976 if (skb->protocol != htons(ETH_P_IP))
977 return csum;
978 skb_set_network_header(skb, ETH_HLEN);
979 if ((ip_hdr(skb)->protocol != IPPROTO_UDP) ||
980 (skb->len < (ETH_HLEN +
981 (ip_hdr(skb)->ihl << 2) +
982 sizeof(struct udphdr)))) {
983 skb_reset_network_header(skb);
984 return csum;
985 }
986 skb_set_transport_header(skb,
987 ETH_HLEN + (ip_hdr(skb)->ihl << 2));
988 csum = udp_hdr(skb)->check;
989 skb_reset_transport_header(skb);
990 skb_reset_network_header(skb);
991
992 return csum;
993}
994
995static int
996jme_rxsum_ok(struct jme_adapter *jme, u16 flags, struct sk_buff *skb)
997{
998 if (!(flags & (RXWBFLAG_TCPON | RXWBFLAG_UDPON | RXWBFLAG_IPV4)))
999 return false;
1000
1001 if (unlikely((flags & (RXWBFLAG_MF | RXWBFLAG_TCPON | RXWBFLAG_TCPCS))
1002 == RXWBFLAG_TCPON)) {
1003 if (flags & RXWBFLAG_IPV4)
1004 netif_err(jme, rx_err, jme->dev, "TCP Checksum error\n");
1005 return false;
1006 }
1007
1008 if (unlikely((flags & (RXWBFLAG_MF | RXWBFLAG_UDPON | RXWBFLAG_UDPCS))
1009 == RXWBFLAG_UDPON) && jme_udpsum(skb)) {
1010 if (flags & RXWBFLAG_IPV4)
1011 netif_err(jme, rx_err, jme->dev, "UDP Checksum error\n");
1012 return false;
1013 }
1014
1015 if (unlikely((flags & (RXWBFLAG_IPV4 | RXWBFLAG_IPCS))
1016 == RXWBFLAG_IPV4)) {
1017 netif_err(jme, rx_err, jme->dev, "IPv4 Checksum error\n");
1018 return false;
1019 }
1020
1021 return true;
1022}
1023
1024static void
1025jme_alloc_and_feed_skb(struct jme_adapter *jme, int idx)
1026{
1027 struct jme_ring *rxring = &(jme->rxring[0]);
1028 struct rxdesc *rxdesc = rxring->desc;
1029 struct jme_buffer_info *rxbi = rxring->bufinf;
1030 struct sk_buff *skb;
1031 int framesize;
1032
1033 rxdesc += idx;
1034 rxbi += idx;
1035
1036 skb = rxbi->skb;
1037 pci_dma_sync_single_for_cpu(jme->pdev,
1038 rxbi->mapping,
1039 rxbi->len,
1040 PCI_DMA_FROMDEVICE);
1041
1042 if (unlikely(jme_make_new_rx_buf(jme, idx))) {
1043 pci_dma_sync_single_for_device(jme->pdev,
1044 rxbi->mapping,
1045 rxbi->len,
1046 PCI_DMA_FROMDEVICE);
1047
1048 ++(NET_STAT(jme).rx_dropped);
1049 } else {
1050 framesize = le16_to_cpu(rxdesc->descwb.framesize)
1051 - RX_PREPAD_SIZE;
1052
1053 skb_reserve(skb, RX_PREPAD_SIZE);
1054 skb_put(skb, framesize);
1055 skb->protocol = eth_type_trans(skb, jme->dev);
1056
1057 if (jme_rxsum_ok(jme, le16_to_cpu(rxdesc->descwb.flags), skb))
1058 skb->ip_summed = CHECKSUM_UNNECESSARY;
1059 else
1060#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,35)
1061 skb->ip_summed = CHECKSUM_NONE;
1062#else
1063 skb_checksum_none_assert(skb);
1064#endif
1065
1066 if (rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_TAGON)) {
1067 if (jme->vlgrp) {
1068 jme->jme_vlan_rx(skb, jme->vlgrp,
1069 le16_to_cpu(rxdesc->descwb.vlan));
1070 NET_STAT(jme).rx_bytes += 4;
1071 } else {
1072 dev_kfree_skb(skb);
1073 }
1074 } else {
1075 jme->jme_rx(skb);
1076 }
1077
1078 if ((rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_DEST)) ==
1079 cpu_to_le16(RXWBFLAG_DEST_MUL))
1080 ++(NET_STAT(jme).multicast);
1081
1082 NET_STAT(jme).rx_bytes += framesize;
1083 ++(NET_STAT(jme).rx_packets);
1084 }
1085
1086 jme_set_clean_rxdesc(jme, idx);
1087
1088}
1089
1090static int
1091jme_process_receive(struct jme_adapter *jme, int limit)
1092{
1093 struct jme_ring *rxring = &(jme->rxring[0]);
1094 struct rxdesc *rxdesc = rxring->desc;
1095 int i, j, ccnt, desccnt, mask = jme->rx_ring_mask;
1096
1097 if (unlikely(!atomic_dec_and_test(&jme->rx_cleaning)))
1098 goto out_inc;
1099
1100 if (unlikely(atomic_read(&jme->link_changing) != 1))
1101 goto out_inc;
1102
1103 if (unlikely(!netif_carrier_ok(jme->dev)))
1104 goto out_inc;
1105
1106 i = atomic_read(&rxring->next_to_clean);
1107 while (limit > 0) {
1108 rxdesc = rxring->desc;
1109 rxdesc += i;
1110
1111 if ((rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_OWN)) ||
1112 !(rxdesc->descwb.desccnt & RXWBDCNT_WBCPL))
1113 goto out;
1114 --limit;
1115
1116 rmb();
1117 desccnt = rxdesc->descwb.desccnt & RXWBDCNT_DCNT;
1118
1119 if (unlikely(desccnt > 1 ||
1120 rxdesc->descwb.errstat & RXWBERR_ALLERR)) {
1121
1122 if (rxdesc->descwb.errstat & RXWBERR_CRCERR)
1123 ++(NET_STAT(jme).rx_crc_errors);
1124 else if (rxdesc->descwb.errstat & RXWBERR_OVERUN)
1125 ++(NET_STAT(jme).rx_fifo_errors);
1126 else
1127 ++(NET_STAT(jme).rx_errors);
1128
1129 if (desccnt > 1)
1130 limit -= desccnt - 1;
1131
1132 for (j = i, ccnt = desccnt ; ccnt-- ; ) {
1133 jme_set_clean_rxdesc(jme, j);
1134 j = (j + 1) & (mask);
1135 }
1136
1137 } else {
1138 jme_alloc_and_feed_skb(jme, i);
1139 }
1140
1141 i = (i + desccnt) & (mask);
1142 }
1143
1144out:
1145 atomic_set(&rxring->next_to_clean, i);
1146
1147out_inc:
1148 atomic_inc(&jme->rx_cleaning);
1149
1150 return limit > 0 ? limit : 0;
1151
1152}
1153
1154static void
1155jme_attempt_pcc(struct dynpcc_info *dpi, int atmp)
1156{
1157 if (likely(atmp == dpi->cur)) {
1158 dpi->cnt = 0;
1159 return;
1160 }
1161
1162 if (dpi->attempt == atmp) {
1163 ++(dpi->cnt);
1164 } else {
1165 dpi->attempt = atmp;
1166 dpi->cnt = 0;
1167 }
1168
1169}
1170
1171static void
1172jme_dynamic_pcc(struct jme_adapter *jme)
1173{
1174 register struct dynpcc_info *dpi = &(jme->dpi);
1175
1176 if ((NET_STAT(jme).rx_bytes - dpi->last_bytes) > PCC_P3_THRESHOLD)
1177 jme_attempt_pcc(dpi, PCC_P3);
1178 else if ((NET_STAT(jme).rx_packets - dpi->last_pkts) > PCC_P2_THRESHOLD ||
1179 dpi->intr_cnt > PCC_INTR_THRESHOLD)
1180 jme_attempt_pcc(dpi, PCC_P2);
1181 else
1182 jme_attempt_pcc(dpi, PCC_P1);
1183
1184 if (unlikely(dpi->attempt != dpi->cur && dpi->cnt > 5)) {
1185 if (dpi->attempt < dpi->cur)
1186 tasklet_schedule(&jme->rxclean_task);
1187 jme_set_rx_pcc(jme, dpi->attempt);
1188 dpi->cur = dpi->attempt;
1189 dpi->cnt = 0;
1190 }
1191}
1192
1193static void
1194jme_start_pcc_timer(struct jme_adapter *jme)
1195{
1196 struct dynpcc_info *dpi = &(jme->dpi);
1197 dpi->last_bytes = NET_STAT(jme).rx_bytes;
1198 dpi->last_pkts = NET_STAT(jme).rx_packets;
1199 dpi->intr_cnt = 0;
1200 jwrite32(jme, JME_TMCSR,
1201 TMCSR_EN | ((0xFFFFFF - PCC_INTERVAL_US) & TMCSR_CNT));
1202}
1203
1204static inline void
1205jme_stop_pcc_timer(struct jme_adapter *jme)
1206{
1207 jwrite32(jme, JME_TMCSR, 0);
1208}
1209
1210static void
1211jme_shutdown_nic(struct jme_adapter *jme)
1212{
1213 u32 phylink;
1214
1215 phylink = jme_linkstat_from_phy(jme);
1216
1217 if (!(phylink & PHY_LINK_UP)) {
1218 /*
1219 * Disable all interrupt before issue timer
1220 */
1221 jme_stop_irq(jme);
1222 jwrite32(jme, JME_TIMER2, TMCSR_EN | 0xFFFFFE);
1223 }
1224}
1225
1226static void
1227jme_pcc_tasklet(unsigned long arg)
1228{
1229 struct jme_adapter *jme = (struct jme_adapter *)arg;
1230 struct net_device *netdev = jme->dev;
1231
1232 if (unlikely(test_bit(JME_FLAG_SHUTDOWN, &jme->flags))) {
1233 jme_shutdown_nic(jme);
1234 return;
1235 }
1236
1237 if (unlikely(!netif_carrier_ok(netdev) ||
1238 (atomic_read(&jme->link_changing) != 1)
1239 )) {
1240 jme_stop_pcc_timer(jme);
1241 return;
1242 }
1243
1244 if (!(test_bit(JME_FLAG_POLL, &jme->flags)))
1245 jme_dynamic_pcc(jme);
1246
1247 jme_start_pcc_timer(jme);
1248}
1249
1250static inline void
1251jme_polling_mode(struct jme_adapter *jme)
1252{
1253 jme_set_rx_pcc(jme, PCC_OFF);
1254}
1255
1256static inline void
1257jme_interrupt_mode(struct jme_adapter *jme)
1258{
1259 jme_set_rx_pcc(jme, PCC_P1);
1260}
1261
1262static inline int
1263jme_pseudo_hotplug_enabled(struct jme_adapter *jme)
1264{
1265 u32 apmc;
1266 apmc = jread32(jme, JME_APMC);
1267 return apmc & JME_APMC_PSEUDO_HP_EN;
1268}
1269
1270static void
1271jme_start_shutdown_timer(struct jme_adapter *jme)
1272{
1273 u32 apmc;
1274
1275 apmc = jread32(jme, JME_APMC) | JME_APMC_PCIE_SD_EN;
1276 apmc &= ~JME_APMC_EPIEN_CTRL;
1277 if (!no_extplug) {
1278 jwrite32f(jme, JME_APMC, apmc | JME_APMC_EPIEN_CTRL_EN);
1279 wmb();
1280 }
1281 jwrite32f(jme, JME_APMC, apmc);
1282
1283 jwrite32f(jme, JME_TIMER2, 0);
1284 set_bit(JME_FLAG_SHUTDOWN, &jme->flags);
1285 jwrite32(jme, JME_TMCSR,
1286 TMCSR_EN | ((0xFFFFFF - APMC_PHP_SHUTDOWN_DELAY) & TMCSR_CNT));
1287}
1288
1289static void
1290jme_stop_shutdown_timer(struct jme_adapter *jme)
1291{
1292 u32 apmc;
1293
1294 jwrite32f(jme, JME_TMCSR, 0);
1295 jwrite32f(jme, JME_TIMER2, 0);
1296 clear_bit(JME_FLAG_SHUTDOWN, &jme->flags);
1297
1298 apmc = jread32(jme, JME_APMC);
1299 apmc &= ~(JME_APMC_PCIE_SD_EN | JME_APMC_EPIEN_CTRL);
1300 jwrite32f(jme, JME_APMC, apmc | JME_APMC_EPIEN_CTRL_DIS);
1301 wmb();
1302 jwrite32f(jme, JME_APMC, apmc);
1303}
1304
1305static void
1306jme_link_change_tasklet(unsigned long arg)
1307{
1308 struct jme_adapter *jme = (struct jme_adapter *)arg;
1309 struct net_device *netdev = jme->dev;
1310 int rc;
1311
1312 while (!atomic_dec_and_test(&jme->link_changing)) {
1313 atomic_inc(&jme->link_changing);
1314 netif_info(jme, intr, jme->dev, "Get link change lock failed\n");
1315 while (atomic_read(&jme->link_changing) != 1)
1316 netif_info(jme, intr, jme->dev, "Waiting link change lock\n");
1317 }
1318
1319 if (jme_check_link(netdev, 1) && jme->old_mtu == netdev->mtu)
1320 goto out;
1321
1322 jme->old_mtu = netdev->mtu;
1323 netif_stop_queue(netdev);
1324 if (jme_pseudo_hotplug_enabled(jme))
1325 jme_stop_shutdown_timer(jme);
1326
1327 jme_stop_pcc_timer(jme);
1328 tasklet_disable(&jme->txclean_task);
1329 tasklet_disable(&jme->rxclean_task);
1330 tasklet_disable(&jme->rxempty_task);
1331
1332 if (netif_carrier_ok(netdev)) {
1333 jme_disable_rx_engine(jme);
1334 jme_disable_tx_engine(jme);
1335 jme_reset_mac_processor(jme);
1336 jme_free_rx_resources(jme);
1337 jme_free_tx_resources(jme);
1338
1339 if (test_bit(JME_FLAG_POLL, &jme->flags))
1340 jme_polling_mode(jme);
1341
1342 netif_carrier_off(netdev);
1343 }
1344
1345 jme_check_link(netdev, 0);
1346 if (netif_carrier_ok(netdev)) {
1347 rc = jme_setup_rx_resources(jme);
1348 if (rc) {
1349 pr_err("Allocating resources for RX error, Device STOPPED!\n");
1350 goto out_enable_tasklet;
1351 }
1352
1353 rc = jme_setup_tx_resources(jme);
1354 if (rc) {
1355 pr_err("Allocating resources for TX error, Device STOPPED!\n");
1356 goto err_out_free_rx_resources;
1357 }
1358
1359 jme_enable_rx_engine(jme);
1360 jme_enable_tx_engine(jme);
1361
1362 netif_start_queue(netdev);
1363
1364 if (test_bit(JME_FLAG_POLL, &jme->flags))
1365 jme_interrupt_mode(jme);
1366
1367 jme_start_pcc_timer(jme);
1368 } else if (jme_pseudo_hotplug_enabled(jme)) {
1369 jme_start_shutdown_timer(jme);
1370 }
1371
1372 goto out_enable_tasklet;
1373
1374err_out_free_rx_resources:
1375 jme_free_rx_resources(jme);
1376out_enable_tasklet:
1377 tasklet_enable(&jme->txclean_task);
1378 tasklet_hi_enable(&jme->rxclean_task);
1379 tasklet_hi_enable(&jme->rxempty_task);
1380out:
1381 atomic_inc(&jme->link_changing);
1382}
1383
1384static void
1385jme_rx_clean_tasklet(unsigned long arg)
1386{
1387 struct jme_adapter *jme = (struct jme_adapter *)arg;
1388 struct dynpcc_info *dpi = &(jme->dpi);
1389
1390 jme_process_receive(jme, jme->rx_ring_size);
1391 ++(dpi->intr_cnt);
1392
1393}
1394
1395static int
1396jme_poll(JME_NAPI_HOLDER(holder), JME_NAPI_WEIGHT(budget))
1397{
1398 struct jme_adapter *jme = jme_napi_priv(holder);
1399 DECLARE_NETDEV
1400 int rest;
1401
1402 rest = jme_process_receive(jme, JME_NAPI_WEIGHT_VAL(budget));
1403
1404 while (atomic_read(&jme->rx_empty) > 0) {
1405 atomic_dec(&jme->rx_empty);
1406 ++(NET_STAT(jme).rx_dropped);
1407 jme_restart_rx_engine(jme);
1408 }
1409 atomic_inc(&jme->rx_empty);
1410
1411 if (rest) {
1412 JME_RX_COMPLETE(netdev, holder);
1413 jme_interrupt_mode(jme);
1414 }
1415
1416 JME_NAPI_WEIGHT_SET(budget, rest);
1417 return JME_NAPI_WEIGHT_VAL(budget) - rest;
1418}
1419
1420static void
1421jme_rx_empty_tasklet(unsigned long arg)
1422{
1423 struct jme_adapter *jme = (struct jme_adapter *)arg;
1424
1425 if (unlikely(atomic_read(&jme->link_changing) != 1))
1426 return;
1427
1428 if (unlikely(!netif_carrier_ok(jme->dev)))
1429 return;
1430
1431 netif_info(jme, rx_status, jme->dev, "RX Queue Full!\n");
1432
1433 jme_rx_clean_tasklet(arg);
1434
1435 while (atomic_read(&jme->rx_empty) > 0) {
1436 atomic_dec(&jme->rx_empty);
1437 ++(NET_STAT(jme).rx_dropped);
1438 jme_restart_rx_engine(jme);
1439 }
1440 atomic_inc(&jme->rx_empty);
1441}
1442
1443static void
1444jme_wake_queue_if_stopped(struct jme_adapter *jme)
1445{
1446 struct jme_ring *txring = &(jme->txring[0]);
1447
1448 smp_wmb();
1449 if (unlikely(netif_queue_stopped(jme->dev) &&
1450 atomic_read(&txring->nr_free) >= (jme->tx_wake_threshold))) {
1451 netif_info(jme, tx_done, jme->dev, "TX Queue Waked\n");
1452 netif_wake_queue(jme->dev);
1453 }
1454
1455}
1456
1457static void
1458jme_tx_clean_tasklet(unsigned long arg)
1459{
1460 struct jme_adapter *jme = (struct jme_adapter *)arg;
1461 struct jme_ring *txring = &(jme->txring[0]);
1462 struct txdesc *txdesc = txring->desc;
1463 struct jme_buffer_info *txbi = txring->bufinf, *ctxbi, *ttxbi;
1464 int i, j, cnt = 0, max, err, mask;
1465
1466 tx_dbg(jme, "Into txclean\n");
1467
1468 if (unlikely(!atomic_dec_and_test(&jme->tx_cleaning)))
1469 goto out;
1470
1471 if (unlikely(atomic_read(&jme->link_changing) != 1))
1472 goto out;
1473
1474 if (unlikely(!netif_carrier_ok(jme->dev)))
1475 goto out;
1476
1477 max = jme->tx_ring_size - atomic_read(&txring->nr_free);
1478 mask = jme->tx_ring_mask;
1479
1480 for (i = atomic_read(&txring->next_to_clean) ; cnt < max ; ) {
1481
1482 ctxbi = txbi + i;
1483
1484 if (likely(ctxbi->skb &&
1485 !(txdesc[i].descwb.flags & TXWBFLAG_OWN))) {
1486
1487 tx_dbg(jme, "txclean: %d+%d@%lu\n",
1488 i, ctxbi->nr_desc, jiffies);
1489
1490 err = txdesc[i].descwb.flags & TXWBFLAG_ALLERR;
1491
1492 for (j = 1 ; j < ctxbi->nr_desc ; ++j) {
1493 ttxbi = txbi + ((i + j) & (mask));
1494 txdesc[(i + j) & (mask)].dw[0] = 0;
1495
1496 pci_unmap_page(jme->pdev,
1497 ttxbi->mapping,
1498 ttxbi->len,
1499 PCI_DMA_TODEVICE);
1500
1501 ttxbi->mapping = 0;
1502 ttxbi->len = 0;
1503 }
1504
1505 dev_kfree_skb(ctxbi->skb);
1506
1507 cnt += ctxbi->nr_desc;
1508
1509 if (unlikely(err)) {
1510 ++(NET_STAT(jme).tx_carrier_errors);
1511 } else {
1512 ++(NET_STAT(jme).tx_packets);
1513 NET_STAT(jme).tx_bytes += ctxbi->len;
1514 }
1515
1516 ctxbi->skb = NULL;
1517 ctxbi->len = 0;
1518 ctxbi->start_xmit = 0;
1519
1520 } else {
1521 break;
1522 }
1523
1524 i = (i + ctxbi->nr_desc) & mask;
1525
1526 ctxbi->nr_desc = 0;
1527 }
1528
1529 tx_dbg(jme, "txclean: done %d@%lu\n", i, jiffies);
1530 atomic_set(&txring->next_to_clean, i);
1531 atomic_add(cnt, &txring->nr_free);
1532
1533 jme_wake_queue_if_stopped(jme);
1534
1535out:
1536 atomic_inc(&jme->tx_cleaning);
1537}
1538
1539static void
1540jme_intr_msi(struct jme_adapter *jme, u32 intrstat)
1541{
1542 /*
1543 * Disable interrupt
1544 */
1545 jwrite32f(jme, JME_IENC, INTR_ENABLE);
1546
1547 if (intrstat & (INTR_LINKCH | INTR_SWINTR)) {
1548 /*
1549 * Link change event is critical
1550 * all other events are ignored
1551 */
1552 jwrite32(jme, JME_IEVE, intrstat);
1553 tasklet_schedule(&jme->linkch_task);
1554 goto out_reenable;
1555 }
1556
1557 if (intrstat & INTR_TMINTR) {
1558 jwrite32(jme, JME_IEVE, INTR_TMINTR);
1559 tasklet_schedule(&jme->pcc_task);
1560 }
1561
1562 if (intrstat & (INTR_PCCTXTO | INTR_PCCTX)) {
1563 jwrite32(jme, JME_IEVE, INTR_PCCTXTO | INTR_PCCTX | INTR_TX0);
1564 tasklet_schedule(&jme->txclean_task);
1565 }
1566
1567 if ((intrstat & (INTR_PCCRX0TO | INTR_PCCRX0 | INTR_RX0EMP))) {
1568 jwrite32(jme, JME_IEVE, (intrstat & (INTR_PCCRX0TO |
1569 INTR_PCCRX0 |
1570 INTR_RX0EMP)) |
1571 INTR_RX0);
1572 }
1573
1574 if (test_bit(JME_FLAG_POLL, &jme->flags)) {
1575 if (intrstat & INTR_RX0EMP)
1576 atomic_inc(&jme->rx_empty);
1577
1578 if ((intrstat & (INTR_PCCRX0TO | INTR_PCCRX0 | INTR_RX0EMP))) {
1579 if (likely(JME_RX_SCHEDULE_PREP(jme))) {
1580 jme_polling_mode(jme);
1581 JME_RX_SCHEDULE(jme);
1582 }
1583 }
1584 } else {
1585 if (intrstat & INTR_RX0EMP) {
1586 atomic_inc(&jme->rx_empty);
1587 tasklet_hi_schedule(&jme->rxempty_task);
1588 } else if (intrstat & (INTR_PCCRX0TO | INTR_PCCRX0)) {
1589 tasklet_hi_schedule(&jme->rxclean_task);
1590 }
1591 }
1592
1593out_reenable:
1594 /*
1595 * Re-enable interrupt
1596 */
1597 jwrite32f(jme, JME_IENS, INTR_ENABLE);
1598}
1599
1600#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,18)
1601static irqreturn_t
1602jme_intr(int irq, void *dev_id, struct pt_regs *regs)
1603#else
1604static irqreturn_t
1605jme_intr(int irq, void *dev_id)
1606#endif
1607{
1608 struct net_device *netdev = dev_id;
1609 struct jme_adapter *jme = netdev_priv(netdev);
1610 u32 intrstat;
1611
1612 intrstat = jread32(jme, JME_IEVE);
1613
1614 /*
1615 * Check if it's really an interrupt for us
1616 */
1617 if (unlikely((intrstat & INTR_ENABLE) == 0))
1618 return IRQ_NONE;
1619
1620 /*
1621 * Check if the device still exist
1622 */
1623 if (unlikely(intrstat == ~((typeof(intrstat))0)))
1624 return IRQ_NONE;
1625
1626 jme_intr_msi(jme, intrstat);
1627
1628 return IRQ_HANDLED;
1629}
1630
1631#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,18)
1632static irqreturn_t
1633jme_msi(int irq, void *dev_id, struct pt_regs *regs)
1634#else
1635static irqreturn_t
1636jme_msi(int irq, void *dev_id)
1637#endif
1638{
1639 struct net_device *netdev = dev_id;
1640 struct jme_adapter *jme = netdev_priv(netdev);
1641 u32 intrstat;
1642
1643 intrstat = jread32(jme, JME_IEVE);
1644
1645 jme_intr_msi(jme, intrstat);
1646
1647 return IRQ_HANDLED;
1648}
1649
1650static void
1651jme_reset_link(struct jme_adapter *jme)
1652{
1653 jwrite32(jme, JME_TMCSR, TMCSR_SWIT);
1654}
1655
1656static void
1657jme_restart_an(struct jme_adapter *jme)
1658{
1659 u32 bmcr;
1660
1661 spin_lock_bh(&jme->phy_lock);
1662 bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1663 bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
1664 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr);
1665 spin_unlock_bh(&jme->phy_lock);
1666}
1667
1668static int
1669jme_request_irq(struct jme_adapter *jme)
1670{
1671 int rc;
1672 struct net_device *netdev = jme->dev;
1673#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,18)
1674 irqreturn_t (*handler)(int, void *, struct pt_regs *) = jme_intr;
1675 int irq_flags = SA_SHIRQ;
1676#else
1677 irq_handler_t handler = jme_intr;
1678 int irq_flags = IRQF_SHARED;
1679#endif
1680
1681 if (!pci_enable_msi(jme->pdev)) {
1682 set_bit(JME_FLAG_MSI, &jme->flags);
1683 handler = jme_msi;
1684 irq_flags = 0;
1685 }
1686
1687 rc = request_irq(jme->pdev->irq, handler, irq_flags, netdev->name,
1688 netdev);
1689 if (rc) {
1690 netdev_err(netdev,
1691 "Unable to request %s interrupt (return: %d)\n",
1692 test_bit(JME_FLAG_MSI, &jme->flags) ? "MSI" : "INTx",
1693 rc);
1694
1695 if (test_bit(JME_FLAG_MSI, &jme->flags)) {
1696 pci_disable_msi(jme->pdev);
1697 clear_bit(JME_FLAG_MSI, &jme->flags);
1698 }
1699 } else {
1700 netdev->irq = jme->pdev->irq;
1701 }
1702
1703 return rc;
1704}
1705
1706static void
1707jme_free_irq(struct jme_adapter *jme)
1708{
1709 free_irq(jme->pdev->irq, jme->dev);
1710 if (test_bit(JME_FLAG_MSI, &jme->flags)) {
1711 pci_disable_msi(jme->pdev);
1712 clear_bit(JME_FLAG_MSI, &jme->flags);
1713 jme->dev->irq = jme->pdev->irq;
1714 }
1715}
1716
1717static inline void
1718jme_new_phy_on(struct jme_adapter *jme)
1719{
1720 u32 reg;
1721
1722 reg = jread32(jme, JME_PHY_PWR);
1723 reg &= ~(PHY_PWR_DWN1SEL | PHY_PWR_DWN1SW |
1724 PHY_PWR_DWN2 | PHY_PWR_CLKSEL);
1725 jwrite32(jme, JME_PHY_PWR, reg);
1726
1727 pci_read_config_dword(jme->pdev, PCI_PRIV_PE1, &reg);
1728 reg &= ~PE1_GPREG0_PBG;
1729 reg |= PE1_GPREG0_ENBG;
1730 pci_write_config_dword(jme->pdev, PCI_PRIV_PE1, reg);
1731}
1732
1733static inline void
1734jme_new_phy_off(struct jme_adapter *jme)
1735{
1736 u32 reg;
1737
1738 reg = jread32(jme, JME_PHY_PWR);
1739 reg |= PHY_PWR_DWN1SEL | PHY_PWR_DWN1SW |
1740 PHY_PWR_DWN2 | PHY_PWR_CLKSEL;
1741 jwrite32(jme, JME_PHY_PWR, reg);
1742
1743 pci_read_config_dword(jme->pdev, PCI_PRIV_PE1, &reg);
1744 reg &= ~PE1_GPREG0_PBG;
1745 reg |= PE1_GPREG0_PDD3COLD;
1746 pci_write_config_dword(jme->pdev, PCI_PRIV_PE1, reg);
1747}
1748
1749static inline void
1750jme_phy_on(struct jme_adapter *jme)
1751{
1752 u32 bmcr;
1753
1754 bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1755 bmcr &= ~BMCR_PDOWN;
1756 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr);
1757
1758 if (new_phy_power_ctrl(jme->chip_main_rev))
1759 jme_new_phy_on(jme);
1760}
1761
1762static inline void
1763jme_phy_off(struct jme_adapter *jme)
1764{
1765 u32 bmcr;
1766
1767 bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1768 bmcr |= BMCR_PDOWN;
1769 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, bmcr);
1770
1771 if (new_phy_power_ctrl(jme->chip_main_rev))
1772 jme_new_phy_off(jme);
1773}
1774
1775static int
1776jme_open(struct net_device *netdev)
1777{
1778 struct jme_adapter *jme = netdev_priv(netdev);
1779 int rc;
1780
1781 jme_clear_pm(jme);
1782 JME_NAPI_ENABLE(jme);
1783
1784 tasklet_enable(&jme->linkch_task);
1785 tasklet_enable(&jme->txclean_task);
1786 tasklet_hi_enable(&jme->rxclean_task);
1787 tasklet_hi_enable(&jme->rxempty_task);
1788
1789 rc = jme_request_irq(jme);
1790 if (rc)
1791 goto err_out;
1792
1793 jme_start_irq(jme);
1794
1795 jme_phy_on(jme);
1796 if (test_bit(JME_FLAG_SSET, &jme->flags))
1797 jme_set_settings(netdev, &jme->old_ecmd);
1798 else
1799 jme_reset_phy_processor(jme);
1800
1801 jme_reset_link(jme);
1802
1803 return 0;
1804
1805err_out:
1806 netif_stop_queue(netdev);
1807 netif_carrier_off(netdev);
1808 return rc;
1809}
1810
1811static void
1812jme_set_100m_half(struct jme_adapter *jme)
1813{
1814 u32 bmcr, tmp;
1815
1816 jme_phy_on(jme);
1817 bmcr = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_BMCR);
1818 tmp = bmcr & ~(BMCR_ANENABLE | BMCR_SPEED100 |
1819 BMCR_SPEED1000 | BMCR_FULLDPLX);
1820 tmp |= BMCR_SPEED100;
1821
1822 if (bmcr != tmp)
1823 jme_mdio_write(jme->dev, jme->mii_if.phy_id, MII_BMCR, tmp);
1824
1825 if (jme->fpgaver)
1826 jwrite32(jme, JME_GHC, GHC_SPEED_100M | GHC_LINK_POLL);
1827 else
1828 jwrite32(jme, JME_GHC, GHC_SPEED_100M);
1829}
1830
1831#define JME_WAIT_LINK_TIME 2000 /* 2000ms */
1832static void
1833jme_wait_link(struct jme_adapter *jme)
1834{
1835 u32 phylink, to = JME_WAIT_LINK_TIME;
1836
1837 mdelay(1000);
1838 phylink = jme_linkstat_from_phy(jme);
1839 while (!(phylink & PHY_LINK_UP) && (to -= 10) > 0) {
1840 mdelay(10);
1841 phylink = jme_linkstat_from_phy(jme);
1842 }
1843}
1844
1845static void
1846jme_powersave_phy(struct jme_adapter *jme)
1847{
1848 if (jme->reg_pmcs) {
1849 jme_set_100m_half(jme);
1850
1851 if (jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN))
1852 jme_wait_link(jme);
1853
1854 jwrite32(jme, JME_PMCS, jme->reg_pmcs);
1855 } else {
1856 jme_phy_off(jme);
1857 }
1858}
1859
1860static int
1861jme_close(struct net_device *netdev)
1862{
1863 struct jme_adapter *jme = netdev_priv(netdev);
1864
1865 netif_stop_queue(netdev);
1866 netif_carrier_off(netdev);
1867
1868 jme_stop_irq(jme);
1869 jme_free_irq(jme);
1870
1871 JME_NAPI_DISABLE(jme);
1872
1873 tasklet_disable(&jme->linkch_task);
1874 tasklet_disable(&jme->txclean_task);
1875 tasklet_disable(&jme->rxclean_task);
1876 tasklet_disable(&jme->rxempty_task);
1877
1878 jme_disable_rx_engine(jme);
1879 jme_disable_tx_engine(jme);
1880 jme_reset_mac_processor(jme);
1881 jme_free_rx_resources(jme);
1882 jme_free_tx_resources(jme);
1883 jme->phylink = 0;
1884 jme_phy_off(jme);
1885
1886 return 0;
1887}
1888
1889static int
1890jme_alloc_txdesc(struct jme_adapter *jme,
1891 struct sk_buff *skb)
1892{
1893 struct jme_ring *txring = &(jme->txring[0]);
1894 int idx, nr_alloc, mask = jme->tx_ring_mask;
1895
1896 idx = txring->next_to_use;
1897 nr_alloc = skb_shinfo(skb)->nr_frags + 2;
1898
1899 if (unlikely(atomic_read(&txring->nr_free) < nr_alloc))
1900 return -1;
1901
1902 atomic_sub(nr_alloc, &txring->nr_free);
1903
1904 txring->next_to_use = (txring->next_to_use + nr_alloc) & mask;
1905
1906 return idx;
1907}
1908
1909static void
1910jme_fill_tx_map(struct pci_dev *pdev,
1911 struct txdesc *txdesc,
1912 struct jme_buffer_info *txbi,
1913 struct page *page,
1914 u32 page_offset,
1915 u32 len,
1916 u8 hidma)
1917{
1918 dma_addr_t dmaaddr;
1919
1920 dmaaddr = pci_map_page(pdev,
1921 page,
1922 page_offset,
1923 len,
1924 PCI_DMA_TODEVICE);
1925
1926 pci_dma_sync_single_for_device(pdev,
1927 dmaaddr,
1928 len,
1929 PCI_DMA_TODEVICE);
1930
1931 txdesc->dw[0] = 0;
1932 txdesc->dw[1] = 0;
1933 txdesc->desc2.flags = TXFLAG_OWN;
1934 txdesc->desc2.flags |= (hidma) ? TXFLAG_64BIT : 0;
1935 txdesc->desc2.datalen = cpu_to_le16(len);
1936 txdesc->desc2.bufaddrh = cpu_to_le32((__u64)dmaaddr >> 32);
1937 txdesc->desc2.bufaddrl = cpu_to_le32(
1938 (__u64)dmaaddr & 0xFFFFFFFFUL);
1939
1940 txbi->mapping = dmaaddr;
1941 txbi->len = len;
1942}
1943
1944static void
1945jme_map_tx_skb(struct jme_adapter *jme, struct sk_buff *skb, int idx)
1946{
1947 struct jme_ring *txring = &(jme->txring[0]);
1948 struct txdesc *txdesc = txring->desc, *ctxdesc;
1949 struct jme_buffer_info *txbi = txring->bufinf, *ctxbi;
1950 u8 hidma = jme->dev->features & NETIF_F_HIGHDMA;
1951 int i, nr_frags = skb_shinfo(skb)->nr_frags;
1952 int mask = jme->tx_ring_mask;
1953 struct skb_frag_struct *frag;
1954 u32 len;
1955
1956 for (i = 0 ; i < nr_frags ; ++i) {
1957 frag = &skb_shinfo(skb)->frags[i];
1958 ctxdesc = txdesc + ((idx + i + 2) & (mask));
1959 ctxbi = txbi + ((idx + i + 2) & (mask));
1960
1961 jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi, frag->page,
1962 frag->page_offset, frag->size, hidma);
1963 }
1964
1965 len = skb_is_nonlinear(skb) ? skb_headlen(skb) : skb->len;
1966 ctxdesc = txdesc + ((idx + 1) & (mask));
1967 ctxbi = txbi + ((idx + 1) & (mask));
1968 jme_fill_tx_map(jme->pdev, ctxdesc, ctxbi, virt_to_page(skb->data),
1969 offset_in_page(skb->data), len, hidma);
1970
1971}
1972
1973static int
1974jme_expand_header(struct jme_adapter *jme, struct sk_buff *skb)
1975{
1976 if (unlikely(
1977#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,17)
1978 skb_shinfo(skb)->tso_size
1979#else
1980 skb_shinfo(skb)->gso_size
1981#endif
1982 && skb_header_cloned(skb) &&
1983 pskb_expand_head(skb, 0, 0, GFP_ATOMIC))) {
1984 dev_kfree_skb(skb);
1985 return -1;
1986 }
1987
1988 return 0;
1989}
1990
1991static int
1992jme_tx_tso(struct sk_buff *skb, __le16 *mss, u8 *flags)
1993{
1994#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,17)
1995 *mss = cpu_to_le16(skb_shinfo(skb)->tso_size << TXDESC_MSS_SHIFT);
1996#else
1997 *mss = cpu_to_le16(skb_shinfo(skb)->gso_size << TXDESC_MSS_SHIFT);
1998#endif
1999 if (*mss) {
2000 *flags |= TXFLAG_LSEN;
2001
2002 if (skb->protocol == htons(ETH_P_IP)) {
2003 struct iphdr *iph = ip_hdr(skb);
2004
2005 iph->check = 0;
2006 tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr,
2007 iph->daddr, 0,
2008 IPPROTO_TCP,
2009 0);
2010 } else {
2011 struct ipv6hdr *ip6h = ipv6_hdr(skb);
2012
2013 tcp_hdr(skb)->check = ~csum_ipv6_magic(&ip6h->saddr,
2014 &ip6h->daddr, 0,
2015 IPPROTO_TCP,
2016 0);
2017 }
2018
2019 return 0;
2020 }
2021
2022 return 1;
2023}
2024
2025static void
2026jme_tx_csum(struct jme_adapter *jme, struct sk_buff *skb, u8 *flags)
2027{
2028#ifdef CHECKSUM_PARTIAL
2029 if (skb->ip_summed == CHECKSUM_PARTIAL)
2030#else
2031 if (skb->ip_summed == CHECKSUM_HW)
2032#endif
2033 {
2034 u8 ip_proto;
2035
2036#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,21)
2037 if (skb->protocol == htons(ETH_P_IP))
2038 ip_proto = ip_hdr(skb)->protocol;
2039 else if (skb->protocol == htons(ETH_P_IPV6))
2040 ip_proto = ipv6_hdr(skb)->nexthdr;
2041 else
2042 ip_proto = 0;
2043#else
2044 switch (skb->protocol) {
2045 case htons(ETH_P_IP):
2046 ip_proto = ip_hdr(skb)->protocol;
2047 break;
2048 case htons(ETH_P_IPV6):
2049 ip_proto = ipv6_hdr(skb)->nexthdr;
2050 break;
2051 default:
2052 ip_proto = 0;
2053 break;
2054 }
2055#endif
2056
2057 switch (ip_proto) {
2058 case IPPROTO_TCP:
2059 *flags |= TXFLAG_TCPCS;
2060 break;
2061 case IPPROTO_UDP:
2062 *flags |= TXFLAG_UDPCS;
2063 break;
2064 default:
2065 netif_err(jme, tx_err, jme->dev, "Error upper layer protocol\n");
2066 break;
2067 }
2068 }
2069}
2070
2071static inline void
2072jme_tx_vlan(struct sk_buff *skb, __le16 *vlan, u8 *flags)
2073{
2074 if (vlan_tx_tag_present(skb)) {
2075 *flags |= TXFLAG_TAGON;
2076 *vlan = cpu_to_le16(vlan_tx_tag_get(skb));
2077 }
2078}
2079
2080static int
2081jme_fill_tx_desc(struct jme_adapter *jme, struct sk_buff *skb, int idx)
2082{
2083 struct jme_ring *txring = &(jme->txring[0]);
2084 struct txdesc *txdesc;
2085 struct jme_buffer_info *txbi;
2086 u8 flags;
2087
2088 txdesc = (struct txdesc *)txring->desc + idx;
2089 txbi = txring->bufinf + idx;
2090
2091 txdesc->dw[0] = 0;
2092 txdesc->dw[1] = 0;
2093 txdesc->dw[2] = 0;
2094 txdesc->dw[3] = 0;
2095 txdesc->desc1.pktsize = cpu_to_le16(skb->len);
2096 /*
2097 * Set OWN bit at final.
2098 * When kernel transmit faster than NIC.
2099 * And NIC trying to send this descriptor before we tell
2100 * it to start sending this TX queue.
2101 * Other fields are already filled correctly.
2102 */
2103 wmb();
2104 flags = TXFLAG_OWN | TXFLAG_INT;
2105 /*
2106 * Set checksum flags while not tso
2107 */
2108 if (jme_tx_tso(skb, &txdesc->desc1.mss, &flags))
2109 jme_tx_csum(jme, skb, &flags);
2110 jme_tx_vlan(skb, &txdesc->desc1.vlan, &flags);
2111 jme_map_tx_skb(jme, skb, idx);
2112 txdesc->desc1.flags = flags;
2113 /*
2114 * Set tx buffer info after telling NIC to send
2115 * For better tx_clean timing
2116 */
2117 wmb();
2118 txbi->nr_desc = skb_shinfo(skb)->nr_frags + 2;
2119 txbi->skb = skb;
2120 txbi->len = skb->len;
2121 txbi->start_xmit = jiffies;
2122 if (!txbi->start_xmit)
2123 txbi->start_xmit = (0UL-1);
2124
2125 return 0;
2126}
2127
2128static void
2129jme_stop_queue_if_full(struct jme_adapter *jme)
2130{
2131 struct jme_ring *txring = &(jme->txring[0]);
2132 struct jme_buffer_info *txbi = txring->bufinf;
2133 int idx = atomic_read(&txring->next_to_clean);
2134
2135 txbi += idx;
2136
2137 smp_wmb();
2138 if (unlikely(atomic_read(&txring->nr_free) < (MAX_SKB_FRAGS+2))) {
2139 netif_stop_queue(jme->dev);
2140 netif_info(jme, tx_queued, jme->dev, "TX Queue Paused\n");
2141 smp_wmb();
2142 if (atomic_read(&txring->nr_free)
2143 >= (jme->tx_wake_threshold)) {
2144 netif_wake_queue(jme->dev);
2145 netif_info(jme, tx_queued, jme->dev, "TX Queue Fast Waked\n");
2146 }
2147 }
2148
2149 if (unlikely(txbi->start_xmit &&
2150 (jiffies - txbi->start_xmit) >= TX_TIMEOUT &&
2151 txbi->skb)) {
2152 netif_stop_queue(jme->dev);
2153 netif_info(jme, tx_queued, jme->dev, "TX Queue Stopped %d@%lu\n", idx, jiffies);
2154 }
2155}
2156
2157/*
2158 * This function is already protected by netif_tx_lock()
2159 */
2160
2161#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,31)
2162static int
2163#else
2164static netdev_tx_t
2165#endif
2166jme_start_xmit(struct sk_buff *skb, struct net_device *netdev)
2167{
2168 struct jme_adapter *jme = netdev_priv(netdev);
2169 int idx;
2170
2171 if (unlikely(jme_expand_header(jme, skb))) {
2172 ++(NET_STAT(jme).tx_dropped);
2173 return NETDEV_TX_OK;
2174 }
2175
2176 idx = jme_alloc_txdesc(jme, skb);
2177
2178 if (unlikely(idx < 0)) {
2179 netif_stop_queue(netdev);
2180 netif_err(jme, tx_err, jme->dev,
2181 "BUG! Tx ring full when queue awake!\n");
2182
2183 return NETDEV_TX_BUSY;
2184 }
2185
2186 jme_fill_tx_desc(jme, skb, idx);
2187
2188 jwrite32(jme, JME_TXCS, jme->reg_txcs |
2189 TXCS_SELECT_QUEUE0 |
2190 TXCS_QUEUE0S |
2191 TXCS_ENABLE);
2192#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,29)
2193 netdev->trans_start = jiffies;
2194#endif
2195
2196 tx_dbg(jme, "xmit: %d+%d@%lu\n",
2197 idx, skb_shinfo(skb)->nr_frags + 2, jiffies);
2198 jme_stop_queue_if_full(jme);
2199
2200 return NETDEV_TX_OK;
2201}
2202
2203static void
2204jme_set_unicastaddr(struct net_device *netdev)
2205{
2206 struct jme_adapter *jme = netdev_priv(netdev);
2207 u32 val;
2208
2209 val = (netdev->dev_addr[3] & 0xff) << 24 |
2210 (netdev->dev_addr[2] & 0xff) << 16 |
2211 (netdev->dev_addr[1] & 0xff) << 8 |
2212 (netdev->dev_addr[0] & 0xff);
2213 jwrite32(jme, JME_RXUMA_LO, val);
2214 val = (netdev->dev_addr[5] & 0xff) << 8 |
2215 (netdev->dev_addr[4] & 0xff);
2216 jwrite32(jme, JME_RXUMA_HI, val);
2217}
2218
2219static int
2220jme_set_macaddr(struct net_device *netdev, void *p)
2221{
2222 struct jme_adapter *jme = netdev_priv(netdev);
2223 struct sockaddr *addr = p;
2224
2225 if (netif_running(netdev))
2226 return -EBUSY;
2227
2228 spin_lock_bh(&jme->macaddr_lock);
2229 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
2230 jme_set_unicastaddr(netdev);
2231 spin_unlock_bh(&jme->macaddr_lock);
2232
2233 return 0;
2234}
2235
2236static void
2237jme_set_multi(struct net_device *netdev)
2238{
2239 struct jme_adapter *jme = netdev_priv(netdev);
2240 u32 mc_hash[2] = {};
2241#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,33)
2242 int i;
2243#endif
2244
2245 spin_lock_bh(&jme->rxmcs_lock);
2246
2247 jme->reg_rxmcs |= RXMCS_BRDFRAME | RXMCS_UNIFRAME;
2248
2249 if (netdev->flags & IFF_PROMISC) {
2250 jme->reg_rxmcs |= RXMCS_ALLFRAME;
2251 } else if (netdev->flags & IFF_ALLMULTI) {
2252 jme->reg_rxmcs |= RXMCS_ALLMULFRAME;
2253 } else if (netdev->flags & IFF_MULTICAST) {
2254#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,34)
2255 struct dev_mc_list *mclist;
2256#else
2257 struct netdev_hw_addr *ha;
2258#endif
2259 int bit_nr;
2260
2261 jme->reg_rxmcs |= RXMCS_MULFRAME | RXMCS_MULFILTERED;
2262#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,33)
2263 for (i = 0, mclist = netdev->mc_list;
2264 mclist && i < netdev->mc_count;
2265 ++i, mclist = mclist->next) {
2266#elif LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,34)
2267 netdev_for_each_mc_addr(mclist, netdev) {
2268#else
2269 netdev_for_each_mc_addr(ha, netdev) {
2270#endif
2271#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,34)
2272 bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) & 0x3F;
2273#else
2274 bit_nr = ether_crc(ETH_ALEN, ha->addr) & 0x3F;
2275#endif
2276 mc_hash[bit_nr >> 5] |= 1 << (bit_nr & 0x1F);
2277 }
2278
2279 jwrite32(jme, JME_RXMCHT_LO, mc_hash[0]);
2280 jwrite32(jme, JME_RXMCHT_HI, mc_hash[1]);
2281 }
2282
2283 wmb();
2284 jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2285
2286 spin_unlock_bh(&jme->rxmcs_lock);
2287}
2288
2289static int
2290jme_change_mtu(struct net_device *netdev, int new_mtu)
2291{
2292 struct jme_adapter *jme = netdev_priv(netdev);
2293
2294 if (new_mtu == jme->old_mtu)
2295 return 0;
2296
2297 if (((new_mtu + ETH_HLEN) > MAX_ETHERNET_JUMBO_PACKET_SIZE) ||
2298 ((new_mtu) < IPV6_MIN_MTU))
2299 return -EINVAL;
2300
2301 if (new_mtu > 4000) {
2302 jme->reg_rxcs &= ~RXCS_FIFOTHNP;
2303 jme->reg_rxcs |= RXCS_FIFOTHNP_64QW;
2304 jme_restart_rx_engine(jme);
2305 } else {
2306 jme->reg_rxcs &= ~RXCS_FIFOTHNP;
2307 jme->reg_rxcs |= RXCS_FIFOTHNP_128QW;
2308 jme_restart_rx_engine(jme);
2309 }
2310
2311 if (new_mtu > 1900) {
2312 netdev->features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
2313 NETIF_F_TSO | NETIF_F_TSO6);
2314 } else {
2315 if (test_bit(JME_FLAG_TXCSUM, &jme->flags))
2316 netdev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
2317 if (test_bit(JME_FLAG_TSO, &jme->flags))
2318 netdev->features |= NETIF_F_TSO | NETIF_F_TSO6;
2319 }
2320
2321 netdev->mtu = new_mtu;
2322 jme_reset_link(jme);
2323
2324 return 0;
2325}
2326
2327static void
2328jme_tx_timeout(struct net_device *netdev)
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_settings(netdev, &jme->old_ecmd);
2336
2337 /*
2338 * Force to Reset the link again
2339 */
2340 jme_reset_link(jme);
2341}
2342
2343static inline void jme_pause_rx(struct jme_adapter *jme)
2344{
2345 atomic_dec(&jme->link_changing);
2346
2347 jme_set_rx_pcc(jme, PCC_OFF);
2348 if (test_bit(JME_FLAG_POLL, &jme->flags)) {
2349 JME_NAPI_DISABLE(jme);
2350 } else {
2351 tasklet_disable(&jme->rxclean_task);
2352 tasklet_disable(&jme->rxempty_task);
2353 }
2354}
2355
2356static inline void jme_resume_rx(struct jme_adapter *jme)
2357{
2358 struct dynpcc_info *dpi = &(jme->dpi);
2359
2360 if (test_bit(JME_FLAG_POLL, &jme->flags)) {
2361 JME_NAPI_ENABLE(jme);
2362 } else {
2363 tasklet_hi_enable(&jme->rxclean_task);
2364 tasklet_hi_enable(&jme->rxempty_task);
2365 }
2366 dpi->cur = PCC_P1;
2367 dpi->attempt = PCC_P1;
2368 dpi->cnt = 0;
2369 jme_set_rx_pcc(jme, PCC_P1);
2370
2371 atomic_inc(&jme->link_changing);
2372}
2373
2374static void
2375jme_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp)
2376{
2377 struct jme_adapter *jme = netdev_priv(netdev);
2378
2379 jme_pause_rx(jme);
2380 jme->vlgrp = grp;
2381 jme_resume_rx(jme);
2382}
2383
2384#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,21)
2385static void
2386jme_vlan_rx_kill_vid(struct net_device *netdev, unsigned short vid)
2387{
2388 struct jme_adapter *jme = netdev_priv(netdev);
2389
2390 if(jme->vlgrp) {
2391 jme_pause_rx(jme);
2392#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,20)
2393 jme->vlgrp->vlan_devices[vid] = NULL;
2394#else
2395 vlan_group_set_device(jme->vlgrp, vid, NULL);
2396#endif
2397 jme_resume_rx(jme);
2398 }
2399}
2400#endif
2401
2402static void
2403jme_get_drvinfo(struct net_device *netdev,
2404 struct ethtool_drvinfo *info)
2405{
2406 struct jme_adapter *jme = netdev_priv(netdev);
2407
2408 strcpy(info->driver, DRV_NAME);
2409 strcpy(info->version, DRV_VERSION);
2410 strcpy(info->bus_info, pci_name(jme->pdev));
2411}
2412
2413static int
2414jme_get_regs_len(struct net_device *netdev)
2415{
2416 return JME_REG_LEN;
2417}
2418
2419static void
2420mmapio_memcpy(struct jme_adapter *jme, u32 *p, u32 reg, int len)
2421{
2422 int i;
2423
2424 for (i = 0 ; i < len ; i += 4)
2425 p[i >> 2] = jread32(jme, reg + i);
2426}
2427
2428static void
2429mdio_memcpy(struct jme_adapter *jme, u32 *p, int reg_nr)
2430{
2431 int i;
2432 u16 *p16 = (u16 *)p;
2433
2434 for (i = 0 ; i < reg_nr ; ++i)
2435 p16[i] = jme_mdio_read(jme->dev, jme->mii_if.phy_id, i);
2436}
2437
2438static void
2439jme_get_regs(struct net_device *netdev, struct ethtool_regs *regs, void *p)
2440{
2441 struct jme_adapter *jme = netdev_priv(netdev);
2442 u32 *p32 = (u32 *)p;
2443
2444 memset(p, 0xFF, JME_REG_LEN);
2445
2446 regs->version = 1;
2447 mmapio_memcpy(jme, p32, JME_MAC, JME_MAC_LEN);
2448
2449 p32 += 0x100 >> 2;
2450 mmapio_memcpy(jme, p32, JME_PHY, JME_PHY_LEN);
2451
2452 p32 += 0x100 >> 2;
2453 mmapio_memcpy(jme, p32, JME_MISC, JME_MISC_LEN);
2454
2455 p32 += 0x100 >> 2;
2456 mmapio_memcpy(jme, p32, JME_RSS, JME_RSS_LEN);
2457
2458 p32 += 0x100 >> 2;
2459 mdio_memcpy(jme, p32, JME_PHY_REG_NR);
2460}
2461
2462static int
2463jme_get_coalesce(struct net_device *netdev, struct ethtool_coalesce *ecmd)
2464{
2465 struct jme_adapter *jme = netdev_priv(netdev);
2466
2467 ecmd->tx_coalesce_usecs = PCC_TX_TO;
2468 ecmd->tx_max_coalesced_frames = PCC_TX_CNT;
2469
2470 if (test_bit(JME_FLAG_POLL, &jme->flags)) {
2471 ecmd->use_adaptive_rx_coalesce = false;
2472 ecmd->rx_coalesce_usecs = 0;
2473 ecmd->rx_max_coalesced_frames = 0;
2474 return 0;
2475 }
2476
2477 ecmd->use_adaptive_rx_coalesce = true;
2478
2479 switch (jme->dpi.cur) {
2480 case PCC_P1:
2481 ecmd->rx_coalesce_usecs = PCC_P1_TO;
2482 ecmd->rx_max_coalesced_frames = PCC_P1_CNT;
2483 break;
2484 case PCC_P2:
2485 ecmd->rx_coalesce_usecs = PCC_P2_TO;
2486 ecmd->rx_max_coalesced_frames = PCC_P2_CNT;
2487 break;
2488 case PCC_P3:
2489 ecmd->rx_coalesce_usecs = PCC_P3_TO;
2490 ecmd->rx_max_coalesced_frames = PCC_P3_CNT;
2491 break;
2492 default:
2493 break;
2494 }
2495
2496 return 0;
2497}
2498
2499static int
2500jme_set_coalesce(struct net_device *netdev, struct ethtool_coalesce *ecmd)
2501{
2502 struct jme_adapter *jme = netdev_priv(netdev);
2503 struct dynpcc_info *dpi = &(jme->dpi);
2504
2505 if (netif_running(netdev))
2506 return -EBUSY;
2507
2508 if (ecmd->use_adaptive_rx_coalesce &&
2509 test_bit(JME_FLAG_POLL, &jme->flags)) {
2510 clear_bit(JME_FLAG_POLL, &jme->flags);
2511 jme->jme_rx = netif_rx;
2512 jme->jme_vlan_rx = vlan_hwaccel_rx;
2513 dpi->cur = PCC_P1;
2514 dpi->attempt = PCC_P1;
2515 dpi->cnt = 0;
2516 jme_set_rx_pcc(jme, PCC_P1);
2517 jme_interrupt_mode(jme);
2518 } else if (!(ecmd->use_adaptive_rx_coalesce) &&
2519 !(test_bit(JME_FLAG_POLL, &jme->flags))) {
2520 set_bit(JME_FLAG_POLL, &jme->flags);
2521 jme->jme_rx = netif_receive_skb;
2522 jme->jme_vlan_rx = vlan_hwaccel_receive_skb;
2523 jme_interrupt_mode(jme);
2524 }
2525
2526 return 0;
2527}
2528
2529static void
2530jme_get_pauseparam(struct net_device *netdev,
2531 struct ethtool_pauseparam *ecmd)
2532{
2533 struct jme_adapter *jme = netdev_priv(netdev);
2534 u32 val;
2535
2536 ecmd->tx_pause = (jme->reg_txpfc & TXPFC_PF_EN) != 0;
2537 ecmd->rx_pause = (jme->reg_rxmcs & RXMCS_FLOWCTRL) != 0;
2538
2539 spin_lock_bh(&jme->phy_lock);
2540 val = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_ADVERTISE);
2541 spin_unlock_bh(&jme->phy_lock);
2542
2543 ecmd->autoneg =
2544 (val & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) != 0;
2545}
2546
2547static int
2548jme_set_pauseparam(struct net_device *netdev,
2549 struct ethtool_pauseparam *ecmd)
2550{
2551 struct jme_adapter *jme = netdev_priv(netdev);
2552 u32 val;
2553
2554 if (((jme->reg_txpfc & TXPFC_PF_EN) != 0) ^
2555 (ecmd->tx_pause != 0)) {
2556
2557 if (ecmd->tx_pause)
2558 jme->reg_txpfc |= TXPFC_PF_EN;
2559 else
2560 jme->reg_txpfc &= ~TXPFC_PF_EN;
2561
2562 jwrite32(jme, JME_TXPFC, jme->reg_txpfc);
2563 }
2564
2565 spin_lock_bh(&jme->rxmcs_lock);
2566 if (((jme->reg_rxmcs & RXMCS_FLOWCTRL) != 0) ^
2567 (ecmd->rx_pause != 0)) {
2568
2569 if (ecmd->rx_pause)
2570 jme->reg_rxmcs |= RXMCS_FLOWCTRL;
2571 else
2572 jme->reg_rxmcs &= ~RXMCS_FLOWCTRL;
2573
2574 jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2575 }
2576 spin_unlock_bh(&jme->rxmcs_lock);
2577
2578 spin_lock_bh(&jme->phy_lock);
2579 val = jme_mdio_read(jme->dev, jme->mii_if.phy_id, MII_ADVERTISE);
2580 if (((val & (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) != 0) ^
2581 (ecmd->autoneg != 0)) {
2582
2583 if (ecmd->autoneg)
2584 val |= (ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
2585 else
2586 val &= ~(ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
2587
2588 jme_mdio_write(jme->dev, jme->mii_if.phy_id,
2589 MII_ADVERTISE, val);
2590 }
2591 spin_unlock_bh(&jme->phy_lock);
2592
2593 return 0;
2594}
2595
2596static void
2597jme_get_wol(struct net_device *netdev,
2598 struct ethtool_wolinfo *wol)
2599{
2600 struct jme_adapter *jme = netdev_priv(netdev);
2601
2602 wol->supported = WAKE_MAGIC | WAKE_PHY;
2603
2604 wol->wolopts = 0;
2605
2606 if (jme->reg_pmcs & (PMCS_LFEN | PMCS_LREN))
2607 wol->wolopts |= WAKE_PHY;
2608
2609 if (jme->reg_pmcs & PMCS_MFEN)
2610 wol->wolopts |= WAKE_MAGIC;
2611
2612}
2613
2614static int
2615jme_set_wol(struct net_device *netdev,
2616 struct ethtool_wolinfo *wol)
2617{
2618 struct jme_adapter *jme = netdev_priv(netdev);
2619
2620 if (wol->wolopts & (WAKE_MAGICSECURE |
2621 WAKE_UCAST |
2622 WAKE_MCAST |
2623 WAKE_BCAST |
2624 WAKE_ARP))
2625 return -EOPNOTSUPP;
2626
2627 jme->reg_pmcs = 0;
2628
2629 if (wol->wolopts & WAKE_PHY)
2630 jme->reg_pmcs |= PMCS_LFEN | PMCS_LREN;
2631
2632 if (wol->wolopts & WAKE_MAGIC)
2633 jme->reg_pmcs |= PMCS_MFEN;
2634
2635 jwrite32(jme, JME_PMCS, jme->reg_pmcs);
2636
2637#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,26)
2638 device_set_wakeup_enable(&jme->pdev->dev, jme->reg_pmcs);
2639#endif
2640
2641 return 0;
2642}
2643
2644static int
2645jme_get_settings(struct net_device *netdev,
2646 struct ethtool_cmd *ecmd)
2647{
2648 struct jme_adapter *jme = netdev_priv(netdev);
2649 int rc;
2650
2651 spin_lock_bh(&jme->phy_lock);
2652 rc = mii_ethtool_gset(&(jme->mii_if), ecmd);
2653 spin_unlock_bh(&jme->phy_lock);
2654 return rc;
2655}
2656
2657static int
2658jme_set_settings(struct net_device *netdev,
2659 struct ethtool_cmd *ecmd)
2660{
2661 struct jme_adapter *jme = netdev_priv(netdev);
2662 int rc, fdc = 0;
2663
2664 if (ecmd->speed == SPEED_1000 && ecmd->autoneg != AUTONEG_ENABLE)
2665 return -EINVAL;
2666
2667 /*
2668 * Check If user changed duplex only while force_media.
2669 * Hardware would not generate link change interrupt.
2670 */
2671 if (jme->mii_if.force_media &&
2672 ecmd->autoneg != AUTONEG_ENABLE &&
2673 (jme->mii_if.full_duplex != ecmd->duplex))
2674 fdc = 1;
2675
2676 spin_lock_bh(&jme->phy_lock);
2677 rc = mii_ethtool_sset(&(jme->mii_if), ecmd);
2678 spin_unlock_bh(&jme->phy_lock);
2679
2680 if (!rc) {
2681 if (fdc)
2682 jme_reset_link(jme);
2683 jme->old_ecmd = *ecmd;
2684 set_bit(JME_FLAG_SSET, &jme->flags);
2685 }
2686
2687 return rc;
2688}
2689
2690static int
2691jme_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd)
2692{
2693 int rc;
2694 struct jme_adapter *jme = netdev_priv(netdev);
2695 struct mii_ioctl_data *mii_data = if_mii(rq);
2696 unsigned int duplex_chg;
2697
2698 if (cmd == SIOCSMIIREG) {
2699 u16 val = mii_data->val_in;
2700 if (!(val & (BMCR_RESET|BMCR_ANENABLE)) &&
2701 (val & BMCR_SPEED1000))
2702 return -EINVAL;
2703 }
2704
2705 spin_lock_bh(&jme->phy_lock);
2706 rc = generic_mii_ioctl(&jme->mii_if, mii_data, cmd, &duplex_chg);
2707 spin_unlock_bh(&jme->phy_lock);
2708
2709 if (!rc && (cmd == SIOCSMIIREG)) {
2710 if (duplex_chg)
2711 jme_reset_link(jme);
2712 jme_get_settings(netdev, &jme->old_ecmd);
2713 set_bit(JME_FLAG_SSET, &jme->flags);
2714 }
2715
2716 return rc;
2717}
2718
2719static u32
2720jme_get_link(struct net_device *netdev)
2721{
2722 struct jme_adapter *jme = netdev_priv(netdev);
2723 return jread32(jme, JME_PHY_LINK) & PHY_LINK_UP;
2724}
2725
2726static u32
2727jme_get_msglevel(struct net_device *netdev)
2728{
2729 struct jme_adapter *jme = netdev_priv(netdev);
2730 return jme->msg_enable;
2731}
2732
2733static void
2734jme_set_msglevel(struct net_device *netdev, u32 value)
2735{
2736 struct jme_adapter *jme = netdev_priv(netdev);
2737 jme->msg_enable = value;
2738}
2739
2740static u32
2741jme_get_rx_csum(struct net_device *netdev)
2742{
2743 struct jme_adapter *jme = netdev_priv(netdev);
2744 return jme->reg_rxmcs & RXMCS_CHECKSUM;
2745}
2746
2747static int
2748jme_set_rx_csum(struct net_device *netdev, u32 on)
2749{
2750 struct jme_adapter *jme = netdev_priv(netdev);
2751
2752 spin_lock_bh(&jme->rxmcs_lock);
2753 if (on)
2754 jme->reg_rxmcs |= RXMCS_CHECKSUM;
2755 else
2756 jme->reg_rxmcs &= ~RXMCS_CHECKSUM;
2757 jwrite32(jme, JME_RXMCS, jme->reg_rxmcs);
2758 spin_unlock_bh(&jme->rxmcs_lock);
2759
2760 return 0;
2761}
2762
2763static int
2764jme_set_tx_csum(struct net_device *netdev, u32 on)
2765{
2766 struct jme_adapter *jme = netdev_priv(netdev);
2767
2768 if (on) {
2769 set_bit(JME_FLAG_TXCSUM, &jme->flags);
2770 if (netdev->mtu <= 1900)
2771 netdev->features |=
2772 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
2773 } else {
2774 clear_bit(JME_FLAG_TXCSUM, &jme->flags);
2775 netdev->features &=
2776 ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM);
2777 }
2778
2779 return 0;
2780}
2781
2782static int
2783jme_set_tso(struct net_device *netdev, u32 on)
2784{
2785 struct jme_adapter *jme = netdev_priv(netdev);
2786
2787 if (on) {
2788 set_bit(JME_FLAG_TSO, &jme->flags);
2789 if (netdev->mtu <= 1900)
2790 netdev->features |= NETIF_F_TSO | NETIF_F_TSO6;
2791 } else {
2792 clear_bit(JME_FLAG_TSO, &jme->flags);
2793 netdev->features &= ~(NETIF_F_TSO | NETIF_F_TSO6);
2794 }
2795
2796 return 0;
2797}
2798
2799static int
2800jme_nway_reset(struct net_device *netdev)
2801{
2802 struct jme_adapter *jme = netdev_priv(netdev);
2803 jme_restart_an(jme);
2804 return 0;
2805}
2806
2807static u8
2808jme_smb_read(struct jme_adapter *jme, unsigned int addr)
2809{
2810 u32 val;
2811 int to;
2812
2813 val = jread32(jme, JME_SMBCSR);
2814 to = JME_SMB_BUSY_TIMEOUT;
2815 while ((val & SMBCSR_BUSY) && --to) {
2816 msleep(1);
2817 val = jread32(jme, JME_SMBCSR);
2818 }
2819 if (!to) {
2820 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2821 return 0xFF;
2822 }
2823
2824 jwrite32(jme, JME_SMBINTF,
2825 ((addr << SMBINTF_HWADDR_SHIFT) & SMBINTF_HWADDR) |
2826 SMBINTF_HWRWN_READ |
2827 SMBINTF_HWCMD);
2828
2829 val = jread32(jme, JME_SMBINTF);
2830 to = JME_SMB_BUSY_TIMEOUT;
2831 while ((val & SMBINTF_HWCMD) && --to) {
2832 msleep(1);
2833 val = jread32(jme, JME_SMBINTF);
2834 }
2835 if (!to) {
2836 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2837 return 0xFF;
2838 }
2839
2840 return (val & SMBINTF_HWDATR) >> SMBINTF_HWDATR_SHIFT;
2841}
2842
2843static void
2844jme_smb_write(struct jme_adapter *jme, unsigned int addr, u8 data)
2845{
2846 u32 val;
2847 int to;
2848
2849 val = jread32(jme, JME_SMBCSR);
2850 to = JME_SMB_BUSY_TIMEOUT;
2851 while ((val & SMBCSR_BUSY) && --to) {
2852 msleep(1);
2853 val = jread32(jme, JME_SMBCSR);
2854 }
2855 if (!to) {
2856 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2857 return;
2858 }
2859
2860 jwrite32(jme, JME_SMBINTF,
2861 ((data << SMBINTF_HWDATW_SHIFT) & SMBINTF_HWDATW) |
2862 ((addr << SMBINTF_HWADDR_SHIFT) & SMBINTF_HWADDR) |
2863 SMBINTF_HWRWN_WRITE |
2864 SMBINTF_HWCMD);
2865
2866 val = jread32(jme, JME_SMBINTF);
2867 to = JME_SMB_BUSY_TIMEOUT;
2868 while ((val & SMBINTF_HWCMD) && --to) {
2869 msleep(1);
2870 val = jread32(jme, JME_SMBINTF);
2871 }
2872 if (!to) {
2873 netif_err(jme, hw, jme->dev, "SMB Bus Busy\n");
2874 return;
2875 }
2876
2877 mdelay(2);
2878}
2879
2880static int
2881jme_get_eeprom_len(struct net_device *netdev)
2882{
2883 struct jme_adapter *jme = netdev_priv(netdev);
2884 u32 val;
2885 val = jread32(jme, JME_SMBCSR);
2886 return (val & SMBCSR_EEPROMD) ? JME_SMB_LEN : 0;
2887}
2888
2889static int
2890jme_get_eeprom(struct net_device *netdev,
2891 struct ethtool_eeprom *eeprom, u8 *data)
2892{
2893 struct jme_adapter *jme = netdev_priv(netdev);
2894 int i, offset = eeprom->offset, len = eeprom->len;
2895
2896 /*
2897 * ethtool will check the boundary for us
2898 */
2899 eeprom->magic = JME_EEPROM_MAGIC;
2900 for (i = 0 ; i < len ; ++i)
2901 data[i] = jme_smb_read(jme, i + offset);
2902
2903 return 0;
2904}
2905
2906static int
2907jme_set_eeprom(struct net_device *netdev,
2908 struct ethtool_eeprom *eeprom, u8 *data)
2909{
2910 struct jme_adapter *jme = netdev_priv(netdev);
2911 int i, offset = eeprom->offset, len = eeprom->len;
2912
2913 if (eeprom->magic != JME_EEPROM_MAGIC)
2914 return -EINVAL;
2915
2916 /*
2917 * ethtool will check the boundary for us
2918 */
2919 for (i = 0 ; i < len ; ++i)
2920 jme_smb_write(jme, i + offset, data[i]);
2921
2922 return 0;
2923}
2924
2925#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,18)
2926static struct ethtool_ops jme_ethtool_ops = {
2927#else
2928static const struct ethtool_ops jme_ethtool_ops = {
2929#endif
2930 .get_drvinfo = jme_get_drvinfo,
2931 .get_regs_len = jme_get_regs_len,
2932 .get_regs = jme_get_regs,
2933 .get_coalesce = jme_get_coalesce,
2934 .set_coalesce = jme_set_coalesce,
2935 .get_pauseparam = jme_get_pauseparam,
2936 .set_pauseparam = jme_set_pauseparam,
2937 .get_wol = jme_get_wol,
2938 .set_wol = jme_set_wol,
2939 .get_settings = jme_get_settings,
2940 .set_settings = jme_set_settings,
2941 .get_link = jme_get_link,
2942 .get_msglevel = jme_get_msglevel,
2943 .set_msglevel = jme_set_msglevel,
2944 .get_rx_csum = jme_get_rx_csum,
2945 .set_rx_csum = jme_set_rx_csum,
2946 .set_tx_csum = jme_set_tx_csum,
2947 .set_tso = jme_set_tso,
2948 .set_sg = ethtool_op_set_sg,
2949 .nway_reset = jme_nway_reset,
2950 .get_eeprom_len = jme_get_eeprom_len,
2951 .get_eeprom = jme_get_eeprom,
2952 .set_eeprom = jme_set_eeprom,
2953};
2954
2955static int
2956jme_pci_dma64(struct pci_dev *pdev)
2957{
2958 if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250 &&
2959#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,29)
2960 !pci_set_dma_mask(pdev, DMA_BIT_MASK(64))
2961#else
2962 !pci_set_dma_mask(pdev, DMA_64BIT_MASK)
2963#endif
2964 )
2965#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,29)
2966 if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)))
2967#else
2968 if (!pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK))
2969#endif
2970 return 1;
2971
2972 if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250 &&
2973#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,29)
2974 !pci_set_dma_mask(pdev, DMA_BIT_MASK(40))
2975#else
2976 !pci_set_dma_mask(pdev, DMA_40BIT_MASK)
2977#endif
2978 )
2979#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,29)
2980 if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(40)))
2981#else
2982 if (!pci_set_consistent_dma_mask(pdev, DMA_40BIT_MASK))
2983#endif
2984 return 1;
2985
2986#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,29)
2987 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32)))
2988 if (!pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)))
2989#else
2990 if (!pci_set_dma_mask(pdev, DMA_32BIT_MASK))
2991 if (!pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK))
2992#endif
2993 return 0;
2994
2995 return -1;
2996}
2997
2998static inline void
2999jme_phy_init(struct jme_adapter *jme)
3000{
3001 u16 reg26;
3002
3003 reg26 = jme_mdio_read(jme->dev, jme->mii_if.phy_id, 26);
3004 jme_mdio_write(jme->dev, jme->mii_if.phy_id, 26, reg26 | 0x1000);
3005}
3006
3007static inline void
3008jme_check_hw_ver(struct jme_adapter *jme)
3009{
3010 u32 chipmode;
3011
3012 chipmode = jread32(jme, JME_CHIPMODE);
3013
3014 jme->fpgaver = (chipmode & CM_FPGAVER_MASK) >> CM_FPGAVER_SHIFT;
3015 jme->chiprev = (chipmode & CM_CHIPREV_MASK) >> CM_CHIPREV_SHIFT;
3016 jme->chip_main_rev = jme->chiprev & 0xF;
3017 jme->chip_sub_rev = (jme->chiprev >> 4) & 0xF;
3018}
3019
3020#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,29)
3021static const struct net_device_ops jme_netdev_ops = {
3022 .ndo_open = jme_open,
3023 .ndo_stop = jme_close,
3024 .ndo_validate_addr = eth_validate_addr,
3025 .ndo_do_ioctl = jme_ioctl,
3026 .ndo_start_xmit = jme_start_xmit,
3027 .ndo_set_mac_address = jme_set_macaddr,
3028 .ndo_set_multicast_list = jme_set_multi,
3029 .ndo_change_mtu = jme_change_mtu,
3030 .ndo_tx_timeout = jme_tx_timeout,
3031 .ndo_vlan_rx_register = jme_vlan_rx_register,
3032};
3033#endif
3034
3035static int __devinit
3036jme_init_one(struct pci_dev *pdev,
3037 const struct pci_device_id *ent)
3038{
3039 int rc = 0, using_dac, i;
3040 struct net_device *netdev;
3041 struct jme_adapter *jme;
3042 u16 bmcr, bmsr;
3043 u32 apmc;
3044
3045 /*
3046 * set up PCI device basics
3047 */
3048 rc = pci_enable_device(pdev);
3049 if (rc) {
3050 pr_err("Cannot enable PCI device\n");
3051 goto err_out;
3052 }
3053
3054 using_dac = jme_pci_dma64(pdev);
3055 if (using_dac < 0) {
3056 pr_err("Cannot set PCI DMA Mask\n");
3057 rc = -EIO;
3058 goto err_out_disable_pdev;
3059 }
3060
3061 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
3062 pr_err("No PCI resource region found\n");
3063 rc = -ENOMEM;
3064 goto err_out_disable_pdev;
3065 }
3066
3067 rc = pci_request_regions(pdev, DRV_NAME);
3068 if (rc) {
3069 pr_err("Cannot obtain PCI resource region\n");
3070 goto err_out_disable_pdev;
3071 }
3072
3073 pci_set_master(pdev);
3074
3075 /*
3076 * alloc and init net device
3077 */
3078 netdev = alloc_etherdev(sizeof(*jme));
3079 if (!netdev) {
3080 pr_err("Cannot allocate netdev structure\n");
3081 rc = -ENOMEM;
3082 goto err_out_release_regions;
3083 }
3084#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,29)
3085 netdev->netdev_ops = &jme_netdev_ops;
3086#else
3087 netdev->open = jme_open;
3088 netdev->stop = jme_close;
3089 netdev->do_ioctl = jme_ioctl;
3090 netdev->hard_start_xmit = jme_start_xmit;
3091 netdev->set_mac_address = jme_set_macaddr;
3092 netdev->set_multicast_list = jme_set_multi;
3093 netdev->change_mtu = jme_change_mtu;
3094 netdev->tx_timeout = jme_tx_timeout;
3095 netdev->vlan_rx_register = jme_vlan_rx_register;
3096#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,21)
3097 netdev->vlan_rx_kill_vid = jme_vlan_rx_kill_vid;
3098#endif
3099 NETDEV_GET_STATS(netdev, &jme_get_stats);
3100#endif
3101 netdev->ethtool_ops = &jme_ethtool_ops;
3102 netdev->watchdog_timeo = TX_TIMEOUT;
3103 netdev->features = NETIF_F_IP_CSUM |
3104 NETIF_F_IPV6_CSUM |
3105 NETIF_F_SG |
3106 NETIF_F_TSO |
3107 NETIF_F_TSO6 |
3108 NETIF_F_HW_VLAN_TX |
3109 NETIF_F_HW_VLAN_RX;
3110 if (using_dac)
3111 netdev->features |= NETIF_F_HIGHDMA;
3112
3113 SET_NETDEV_DEV(netdev, &pdev->dev);
3114 pci_set_drvdata(pdev, netdev);
3115
3116 /*
3117 * init adapter info
3118 */
3119 jme = netdev_priv(netdev);
3120 jme->pdev = pdev;
3121 jme->dev = netdev;
3122 jme->jme_rx = netif_rx;
3123 jme->jme_vlan_rx = vlan_hwaccel_rx;
3124 jme->old_mtu = netdev->mtu = 1500;
3125 jme->phylink = 0;
3126 jme->tx_ring_size = 1 << 10;
3127 jme->tx_ring_mask = jme->tx_ring_size - 1;
3128 jme->tx_wake_threshold = 1 << 9;
3129 jme->rx_ring_size = 1 << 9;
3130 jme->rx_ring_mask = jme->rx_ring_size - 1;
3131 jme->msg_enable = JME_DEF_MSG_ENABLE;
3132 jme->regs = ioremap(pci_resource_start(pdev, 0),
3133 pci_resource_len(pdev, 0));
3134 if (!(jme->regs)) {
3135 pr_err("Mapping PCI resource region error\n");
3136 rc = -ENOMEM;
3137 goto err_out_free_netdev;
3138 }
3139
3140 if (no_pseudohp) {
3141 apmc = jread32(jme, JME_APMC) & ~JME_APMC_PSEUDO_HP_EN;
3142 jwrite32(jme, JME_APMC, apmc);
3143 } else if (force_pseudohp) {
3144 apmc = jread32(jme, JME_APMC) | JME_APMC_PSEUDO_HP_EN;
3145 jwrite32(jme, JME_APMC, apmc);
3146 }
3147
3148 NETIF_NAPI_SET(netdev, &jme->napi, jme_poll, jme->rx_ring_size >> 2)
3149
3150 spin_lock_init(&jme->phy_lock);
3151 spin_lock_init(&jme->macaddr_lock);
3152 spin_lock_init(&jme->rxmcs_lock);
3153
3154 atomic_set(&jme->link_changing, 1);
3155 atomic_set(&jme->rx_cleaning, 1);
3156 atomic_set(&jme->tx_cleaning, 1);
3157 atomic_set(&jme->rx_empty, 1);
3158
3159 tasklet_init(&jme->pcc_task,
3160 jme_pcc_tasklet,
3161 (unsigned long) jme);
3162 tasklet_init(&jme->linkch_task,
3163 jme_link_change_tasklet,
3164 (unsigned long) jme);
3165 tasklet_init(&jme->txclean_task,
3166 jme_tx_clean_tasklet,
3167 (unsigned long) jme);
3168 tasklet_init(&jme->rxclean_task,
3169 jme_rx_clean_tasklet,
3170 (unsigned long) jme);
3171 tasklet_init(&jme->rxempty_task,
3172 jme_rx_empty_tasklet,
3173 (unsigned long) jme);
3174 tasklet_disable_nosync(&jme->linkch_task);
3175 tasklet_disable_nosync(&jme->txclean_task);
3176 tasklet_disable_nosync(&jme->rxclean_task);
3177 tasklet_disable_nosync(&jme->rxempty_task);
3178 jme->dpi.cur = PCC_P1;
3179
3180 jme->reg_ghc = 0;
3181 jme->reg_rxcs = RXCS_DEFAULT;
3182 jme->reg_rxmcs = RXMCS_DEFAULT;
3183 jme->reg_txpfc = 0;
3184 jme->reg_pmcs = PMCS_MFEN;
3185 jme->reg_gpreg1 = GPREG1_DEFAULT;
3186 set_bit(JME_FLAG_TXCSUM, &jme->flags);
3187 set_bit(JME_FLAG_TSO, &jme->flags);
3188
3189 /*
3190 * Get Max Read Req Size from PCI Config Space
3191 */
3192 pci_read_config_byte(pdev, PCI_DCSR_MRRS, &jme->mrrs);
3193 jme->mrrs &= PCI_DCSR_MRRS_MASK;
3194 switch (jme->mrrs) {
3195 case MRRS_128B:
3196 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_128B;
3197 break;
3198 case MRRS_256B:
3199 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_256B;
3200 break;
3201 default:
3202 jme->reg_txcs = TXCS_DEFAULT | TXCS_DMASIZE_512B;
3203 break;
3204 }
3205
3206 /*
3207 * Must check before reset_mac_processor
3208 */
3209 jme_check_hw_ver(jme);
3210 jme->mii_if.dev = netdev;
3211 if (jme->fpgaver) {
3212 jme->mii_if.phy_id = 0;
3213 for (i = 1 ; i < 32 ; ++i) {
3214 bmcr = jme_mdio_read(netdev, i, MII_BMCR);
3215 bmsr = jme_mdio_read(netdev, i, MII_BMSR);
3216 if (bmcr != 0xFFFFU && (bmcr != 0 || bmsr != 0)) {
3217 jme->mii_if.phy_id = i;
3218 break;
3219 }
3220 }
3221
3222 if (!jme->mii_if.phy_id) {
3223 rc = -EIO;
3224 pr_err("Can not find phy_id\n");
3225 goto err_out_unmap;
3226 }
3227
3228 jme->reg_ghc |= GHC_LINK_POLL;
3229 } else {
3230 jme->mii_if.phy_id = 1;
3231 }
3232 if (pdev->device == PCI_DEVICE_ID_JMICRON_JMC250)
3233 jme->mii_if.supports_gmii = true;
3234 else
3235 jme->mii_if.supports_gmii = false;
3236 jme->mii_if.phy_id_mask = 0x1F;
3237 jme->mii_if.reg_num_mask = 0x1F;
3238 jme->mii_if.mdio_read = jme_mdio_read;
3239 jme->mii_if.mdio_write = jme_mdio_write;
3240
3241 jme_clear_pm(jme);
3242 jme_set_phyfifo_5level(jme);
3243#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,22)
3244 pci_read_config_byte(pdev, PCI_REVISION_ID, &jme->pcirev);
3245#else
3246 jme->pcirev = pdev->revision;
3247#endif
3248 if (!jme->fpgaver)
3249 jme_phy_init(jme);
3250 jme_phy_off(jme);
3251
3252 /*
3253 * Reset MAC processor and reload EEPROM for MAC Address
3254 */
3255 jme_reset_mac_processor(jme);
3256 rc = jme_reload_eeprom(jme);
3257 if (rc) {
3258 pr_err("Reload eeprom for reading MAC Address error\n");
3259 goto err_out_unmap;
3260 }
3261 jme_load_macaddr(netdev);
3262
3263 /*
3264 * Tell stack that we are not ready to work until open()
3265 */
3266 netif_carrier_off(netdev);
3267
3268 rc = register_netdev(netdev);
3269 if (rc) {
3270 pr_err("Cannot register net device\n");
3271 goto err_out_unmap;
3272 }
3273
3274 netif_info(jme, probe, jme->dev, "%s%s chipver:%x pcirev:%x "
3275 "macaddr: %02x:%02x:%02x:%02x:%02x:%02x\n",
3276 (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC250) ?
3277 "JMC250 Gigabit Ethernet" :
3278 (jme->pdev->device == PCI_DEVICE_ID_JMICRON_JMC260) ?
3279 "JMC260 Fast Ethernet" : "Unknown",
3280 (jme->fpgaver != 0) ? " (FPGA)" : "",
3281 (jme->fpgaver != 0) ? jme->fpgaver : jme->chiprev,
3282 jme->pcirev,
3283 netdev->dev_addr[0],
3284 netdev->dev_addr[1],
3285 netdev->dev_addr[2],
3286 netdev->dev_addr[3],
3287 netdev->dev_addr[4],
3288 netdev->dev_addr[5]);
3289
3290 return 0;
3291
3292err_out_unmap:
3293 iounmap(jme->regs);
3294err_out_free_netdev:
3295 pci_set_drvdata(pdev, NULL);
3296 free_netdev(netdev);
3297err_out_release_regions:
3298 pci_release_regions(pdev);
3299err_out_disable_pdev:
3300 pci_disable_device(pdev);
3301err_out:
3302 return rc;
3303}
3304
3305static void __devexit
3306jme_remove_one(struct pci_dev *pdev)
3307{
3308 struct net_device *netdev = pci_get_drvdata(pdev);
3309 struct jme_adapter *jme = netdev_priv(netdev);
3310
3311 unregister_netdev(netdev);
3312 iounmap(jme->regs);
3313 pci_set_drvdata(pdev, NULL);
3314 free_netdev(netdev);
3315 pci_release_regions(pdev);
3316 pci_disable_device(pdev);
3317
3318}
3319
3320static void
3321jme_shutdown(struct pci_dev *pdev)
3322{
3323 struct net_device *netdev = pci_get_drvdata(pdev);
3324 struct jme_adapter *jme = netdev_priv(netdev);
3325
3326 jme_powersave_phy(jme);
3327#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,27)
3328 pci_enable_wake(pdev, PCI_D3hot, true);
3329#else
3330 pci_pme_active(pdev, true);
3331#endif
3332}
3333
3334#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,25)
3335 #ifdef CONFIG_PM
3336 #define JME_HAVE_PM
3337 #endif
3338#else
3339 #ifdef CONFIG_PM_SLEEP
3340 #define JME_HAVE_PM
3341 #endif
3342#endif
3343
3344#ifdef JME_HAVE_PM
3345static int
3346#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,38)
3347jme_suspend(struct pci_dev *pdev, pm_message_t state)
3348#else
3349jme_suspend(struct device *dev)
3350#endif
3351{
3352#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,38)
3353 struct pci_dev *pdev = to_pci_dev(dev);
3354#endif
3355 struct net_device *netdev = pci_get_drvdata(pdev);
3356 struct jme_adapter *jme = netdev_priv(netdev);
3357
3358 atomic_dec(&jme->link_changing);
3359
3360 netif_device_detach(netdev);
3361 netif_stop_queue(netdev);
3362 jme_stop_irq(jme);
3363
3364 tasklet_disable(&jme->txclean_task);
3365 tasklet_disable(&jme->rxclean_task);
3366 tasklet_disable(&jme->rxempty_task);
3367
3368 if (netif_carrier_ok(netdev)) {
3369 if (test_bit(JME_FLAG_POLL, &jme->flags))
3370 jme_polling_mode(jme);
3371
3372 jme_stop_pcc_timer(jme);
3373 jme_disable_rx_engine(jme);
3374 jme_disable_tx_engine(jme);
3375 jme_reset_mac_processor(jme);
3376 jme_free_rx_resources(jme);
3377 jme_free_tx_resources(jme);
3378 netif_carrier_off(netdev);
3379 jme->phylink = 0;
3380 }
3381
3382 tasklet_enable(&jme->txclean_task);
3383 tasklet_hi_enable(&jme->rxclean_task);
3384 tasklet_hi_enable(&jme->rxempty_task);
3385
3386 jme_powersave_phy(jme);
3387#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,38)
3388 pci_save_state(pdev);
3389#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,27)
3390 pci_enable_wake(pdev, PCI_D3hot, true);
3391#else
3392 pci_pme_active(pdev, true);
3393#endif
3394 pci_set_power_state(pdev, PCI_D3hot);
3395#endif
3396
3397 return 0;
3398}
3399
3400static int
3401#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,38)
3402jme_resume(struct pci_dev *pdev)
3403#else
3404jme_resume(struct device *dev)
3405#endif
3406{
3407#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,38)
3408 struct pci_dev *pdev = to_pci_dev(dev);
3409#endif
3410 struct net_device *netdev = pci_get_drvdata(pdev);
3411 struct jme_adapter *jme = netdev_priv(netdev);
3412
3413 jme_clear_pm(jme);
3414#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,38)
3415 pci_restore_state(pdev);
3416#endif
3417
3418 jme_phy_on(jme);
3419 if (test_bit(JME_FLAG_SSET, &jme->flags))
3420 jme_set_settings(netdev, &jme->old_ecmd);
3421 else
3422 jme_reset_phy_processor(jme);
3423
3424 jme_start_irq(jme);
3425 netif_device_attach(netdev);
3426
3427 atomic_inc(&jme->link_changing);
3428
3429 jme_reset_link(jme);
3430
3431 return 0;
3432}
3433
3434#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,38)
3435static SIMPLE_DEV_PM_OPS(jme_pm_ops, jme_suspend, jme_resume);
3436#define JME_PM_OPS (&jme_pm_ops)
3437#endif
3438
3439#else
3440
3441#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,38)
3442#define JME_PM_OPS NULL
3443#endif
3444#endif
3445
3446#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,24)
3447static struct pci_device_id jme_pci_tbl[] = {
3448#else
3449static DEFINE_PCI_DEVICE_TABLE(jme_pci_tbl) = {
3450#endif
3451 { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMC250) },
3452 { PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMC260) },
3453 { }
3454};
3455
3456static struct pci_driver jme_driver = {
3457 .name = DRV_NAME,
3458 .id_table = jme_pci_tbl,
3459 .probe = jme_init_one,
3460 .remove = __devexit_p(jme_remove_one),
3461 .shutdown = jme_shutdown,
3462#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,38)
3463 .suspend = jme_suspend,
3464 .resume = jme_resume
3465#else
3466 .driver.pm = JME_PM_OPS,
3467#endif
3468};
3469
3470static int __init
3471jme_init_module(void)
3472{
3473 pr_info("JMicron JMC2XX ethernet driver version %s\n", DRV_VERSION);
3474 return pci_register_driver(&jme_driver);
3475}
3476
3477static void __exit
3478jme_cleanup_module(void)
3479{
3480 pci_unregister_driver(&jme_driver);
3481}
3482
3483module_init(jme_init_module);
3484module_exit(jme_cleanup_module);
3485
3486MODULE_AUTHOR("Guo-Fu Tseng <cooldavid@cooldavid.org>");
3487MODULE_DESCRIPTION("JMicron JMC2x0 PCI Express Ethernet driver");
3488MODULE_LICENSE("GPL");
3489MODULE_VERSION(DRV_VERSION);
3490MODULE_DEVICE_TABLE(pci, jme_pci_tbl);
3491
JMicron Ethernet Linux driver