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