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Linux 2.6.20.7
[linux/fpc-iii.git] / drivers / net / skge.c
blob9bc9427612f4c0871302cdc8f4f2f8da4b877d5c
1 /*
2 * New driver for Marvell Yukon chipset and SysKonnect Gigabit
3 * Ethernet adapters. Based on earlier sk98lin, e100 and
4 * FreeBSD if_sk drivers.
5 *
6 * This driver intentionally does not support all the features
7 * of the original driver such as link fail-over and link management because
8 * those should be done at higher levels.
9 *
10 * Copyright (C) 2004, 2005 Stephen Hemminger <shemminger@osdl.org>
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 */
25
26 #include <linux/in.h>
27 #include <linux/kernel.h>
28 #include <linux/module.h>
29 #include <linux/moduleparam.h>
30 #include <linux/netdevice.h>
31 #include <linux/etherdevice.h>
32 #include <linux/ethtool.h>
33 #include <linux/pci.h>
34 #include <linux/if_vlan.h>
35 #include <linux/ip.h>
36 #include <linux/delay.h>
37 #include <linux/crc32.h>
38 #include <linux/dma-mapping.h>
39 #include <linux/mii.h>
40 #include <asm/irq.h>
41
42 #include "skge.h"
43
44 #define DRV_NAME "skge"
45 #define DRV_VERSION "1.9"
46 #define PFX DRV_NAME " "
47
48 #define DEFAULT_TX_RING_SIZE 128
49 #define DEFAULT_RX_RING_SIZE 512
50 #define MAX_TX_RING_SIZE 1024
51 #define TX_LOW_WATER (MAX_SKB_FRAGS + 1)
52 #define MAX_RX_RING_SIZE 4096
53 #define RX_COPY_THRESHOLD 128
54 #define RX_BUF_SIZE 1536
55 #define PHY_RETRIES 1000
56 #define ETH_JUMBO_MTU 9000
57 #define TX_WATCHDOG (5 * HZ)
58 #define NAPI_WEIGHT 64
59 #define BLINK_MS 250
60 #define LINK_HZ (HZ/2)
61
62 MODULE_DESCRIPTION("SysKonnect Gigabit Ethernet driver");
63 MODULE_AUTHOR("Stephen Hemminger <shemminger@linux-foundation.org>");
64 MODULE_LICENSE("GPL");
65 MODULE_VERSION(DRV_VERSION);
66
67 static const u32 default_msg
68 = NETIF_MSG_DRV| NETIF_MSG_PROBE| NETIF_MSG_LINK
69 | NETIF_MSG_IFUP| NETIF_MSG_IFDOWN;
70
71 static int debug = -1; /* defaults above */
72 module_param(debug, int, 0);
73 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
74
75 static const struct pci_device_id skge_id_table[] = {
76 { PCI_DEVICE(PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3C940) },
77 { PCI_DEVICE(PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3C940B) },
78 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, PCI_DEVICE_ID_SYSKONNECT_GE) },
79 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, PCI_DEVICE_ID_SYSKONNECT_YU) },
80 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, PCI_DEVICE_ID_DLINK_DGE510T), },
81 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4b01) }, /* DGE-530T */
82 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4320) },
83 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x5005) }, /* Belkin */
84 { PCI_DEVICE(PCI_VENDOR_ID_CNET, PCI_DEVICE_ID_CNET_GIGACARD) },
85 { PCI_DEVICE(PCI_VENDOR_ID_LINKSYS, PCI_DEVICE_ID_LINKSYS_EG1064) },
86 { PCI_VENDOR_ID_LINKSYS, 0x1032, PCI_ANY_ID, 0x0015, },
87 { 0 }
88 };
89 MODULE_DEVICE_TABLE(pci, skge_id_table);
90
91 static int skge_up(struct net_device *dev);
92 static int skge_down(struct net_device *dev);
93 static void skge_phy_reset(struct skge_port *skge);
94 static void skge_tx_clean(struct net_device *dev);
95 static int xm_phy_write(struct skge_hw *hw, int port, u16 reg, u16 val);
96 static int gm_phy_write(struct skge_hw *hw, int port, u16 reg, u16 val);
97 static void genesis_get_stats(struct skge_port *skge, u64 *data);
98 static void yukon_get_stats(struct skge_port *skge, u64 *data);
99 static void yukon_init(struct skge_hw *hw, int port);
100 static void genesis_mac_init(struct skge_hw *hw, int port);
101 static void genesis_link_up(struct skge_port *skge);
102
103 /* Avoid conditionals by using array */
104 static const int txqaddr[] = { Q_XA1, Q_XA2 };
105 static const int rxqaddr[] = { Q_R1, Q_R2 };
106 static const u32 rxirqmask[] = { IS_R1_F, IS_R2_F };
107 static const u32 txirqmask[] = { IS_XA1_F, IS_XA2_F };
108 static const u32 irqmask[] = { IS_R1_F|IS_XA1_F, IS_R2_F|IS_XA2_F };
109
110 static int skge_get_regs_len(struct net_device *dev)
111 {
112 return 0x4000;
113 }
114
115 /*
116 * Returns copy of whole control register region
117 * Note: skip RAM address register because accessing it will
118 * cause bus hangs!
119 */
120 static void skge_get_regs(struct net_device *dev, struct ethtool_regs *regs,
121 void *p)
122 {
123 const struct skge_port *skge = netdev_priv(dev);
124 const void __iomem *io = skge->hw->regs;
125
126 regs->version = 1;
127 memset(p, 0, regs->len);
128 memcpy_fromio(p, io, B3_RAM_ADDR);
129
130 memcpy_fromio(p + B3_RI_WTO_R1, io + B3_RI_WTO_R1,
131 regs->len - B3_RI_WTO_R1);
132 }
133
134 /* Wake on Lan only supported on Yukon chips with rev 1 or above */
135 static int wol_supported(const struct skge_hw *hw)
136 {
137 return !((hw->chip_id == CHIP_ID_GENESIS ||
138 (hw->chip_id == CHIP_ID_YUKON && hw->chip_rev == 0)));
139 }
140
141 static void skge_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
142 {
143 struct skge_port *skge = netdev_priv(dev);
144
145 wol->supported = wol_supported(skge->hw) ? WAKE_MAGIC : 0;
146 wol->wolopts = skge->wol ? WAKE_MAGIC : 0;
147 }
148
149 static int skge_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
150 {
151 struct skge_port *skge = netdev_priv(dev);
152 struct skge_hw *hw = skge->hw;
153
154 if (wol->wolopts != WAKE_MAGIC && wol->wolopts != 0)
155 return -EOPNOTSUPP;
156
157 if (wol->wolopts == WAKE_MAGIC && !wol_supported(hw))
158 return -EOPNOTSUPP;
159
160 skge->wol = wol->wolopts == WAKE_MAGIC;
161
162 if (skge->wol) {
163 memcpy_toio(hw->regs + WOL_MAC_ADDR, dev->dev_addr, ETH_ALEN);
164
165 skge_write16(hw, WOL_CTRL_STAT,
166 WOL_CTL_ENA_PME_ON_MAGIC_PKT |
167 WOL_CTL_ENA_MAGIC_PKT_UNIT);
168 } else
169 skge_write16(hw, WOL_CTRL_STAT, WOL_CTL_DEFAULT);
170
171 return 0;
172 }
173
174 /* Determine supported/advertised modes based on hardware.
175 * Note: ethtool ADVERTISED_xxx == SUPPORTED_xxx
176 */
177 static u32 skge_supported_modes(const struct skge_hw *hw)
178 {
179 u32 supported;
180
181 if (hw->copper) {
182 supported = SUPPORTED_10baseT_Half
183 | SUPPORTED_10baseT_Full
184 | SUPPORTED_100baseT_Half
185 | SUPPORTED_100baseT_Full
186 | SUPPORTED_1000baseT_Half
187 | SUPPORTED_1000baseT_Full
188 | SUPPORTED_Autoneg| SUPPORTED_TP;
189
190 if (hw->chip_id == CHIP_ID_GENESIS)
191 supported &= ~(SUPPORTED_10baseT_Half
192 | SUPPORTED_10baseT_Full
193 | SUPPORTED_100baseT_Half
194 | SUPPORTED_100baseT_Full);
195
196 else if (hw->chip_id == CHIP_ID_YUKON)
197 supported &= ~SUPPORTED_1000baseT_Half;
198 } else
199 supported = SUPPORTED_1000baseT_Full | SUPPORTED_1000baseT_Half
200 | SUPPORTED_FIBRE | SUPPORTED_Autoneg;
201
202 return supported;
203 }
204
205 static int skge_get_settings(struct net_device *dev,
206 struct ethtool_cmd *ecmd)
207 {
208 struct skge_port *skge = netdev_priv(dev);
209 struct skge_hw *hw = skge->hw;
210
211 ecmd->transceiver = XCVR_INTERNAL;
212 ecmd->supported = skge_supported_modes(hw);
213
214 if (hw->copper) {
215 ecmd->port = PORT_TP;
216 ecmd->phy_address = hw->phy_addr;
217 } else
218 ecmd->port = PORT_FIBRE;
219
220 ecmd->advertising = skge->advertising;
221 ecmd->autoneg = skge->autoneg;
222 ecmd->speed = skge->speed;
223 ecmd->duplex = skge->duplex;
224 return 0;
225 }
226
227 static int skge_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
228 {
229 struct skge_port *skge = netdev_priv(dev);
230 const struct skge_hw *hw = skge->hw;
231 u32 supported = skge_supported_modes(hw);
232
233 if (ecmd->autoneg == AUTONEG_ENABLE) {
234 ecmd->advertising = supported;
235 skge->duplex = -1;
236 skge->speed = -1;
237 } else {
238 u32 setting;
239
240 switch (ecmd->speed) {
241 case SPEED_1000:
242 if (ecmd->duplex == DUPLEX_FULL)
243 setting = SUPPORTED_1000baseT_Full;
244 else if (ecmd->duplex == DUPLEX_HALF)
245 setting = SUPPORTED_1000baseT_Half;
246 else
247 return -EINVAL;
248 break;
249 case SPEED_100:
250 if (ecmd->duplex == DUPLEX_FULL)
251 setting = SUPPORTED_100baseT_Full;
252 else if (ecmd->duplex == DUPLEX_HALF)
253 setting = SUPPORTED_100baseT_Half;
254 else
255 return -EINVAL;
256 break;
257
258 case SPEED_10:
259 if (ecmd->duplex == DUPLEX_FULL)
260 setting = SUPPORTED_10baseT_Full;
261 else if (ecmd->duplex == DUPLEX_HALF)
262 setting = SUPPORTED_10baseT_Half;
263 else
264 return -EINVAL;
265 break;
266 default:
267 return -EINVAL;
268 }
269
270 if ((setting & supported) == 0)
271 return -EINVAL;
272
273 skge->speed = ecmd->speed;
274 skge->duplex = ecmd->duplex;
275 }
276
277 skge->autoneg = ecmd->autoneg;
278 skge->advertising = ecmd->advertising;
279
280 if (netif_running(dev))
281 skge_phy_reset(skge);
282
283 return (0);
284 }
285
286 static void skge_get_drvinfo(struct net_device *dev,
287 struct ethtool_drvinfo *info)
288 {
289 struct skge_port *skge = netdev_priv(dev);
290
291 strcpy(info->driver, DRV_NAME);
292 strcpy(info->version, DRV_VERSION);
293 strcpy(info->fw_version, "N/A");
294 strcpy(info->bus_info, pci_name(skge->hw->pdev));
295 }
296
297 static const struct skge_stat {
298 char name[ETH_GSTRING_LEN];
299 u16 xmac_offset;
300 u16 gma_offset;
301 } skge_stats[] = {
302 { "tx_bytes", XM_TXO_OK_HI, GM_TXO_OK_HI },
303 { "rx_bytes", XM_RXO_OK_HI, GM_RXO_OK_HI },
304
305 { "tx_broadcast", XM_TXF_BC_OK, GM_TXF_BC_OK },
306 { "rx_broadcast", XM_RXF_BC_OK, GM_RXF_BC_OK },
307 { "tx_multicast", XM_TXF_MC_OK, GM_TXF_MC_OK },
308 { "rx_multicast", XM_RXF_MC_OK, GM_RXF_MC_OK },
309 { "tx_unicast", XM_TXF_UC_OK, GM_TXF_UC_OK },
310 { "rx_unicast", XM_RXF_UC_OK, GM_RXF_UC_OK },
311 { "tx_mac_pause", XM_TXF_MPAUSE, GM_TXF_MPAUSE },
312 { "rx_mac_pause", XM_RXF_MPAUSE, GM_RXF_MPAUSE },
313
314 { "collisions", XM_TXF_SNG_COL, GM_TXF_SNG_COL },
315 { "multi_collisions", XM_TXF_MUL_COL, GM_TXF_MUL_COL },
316 { "aborted", XM_TXF_ABO_COL, GM_TXF_ABO_COL },
317 { "late_collision", XM_TXF_LAT_COL, GM_TXF_LAT_COL },
318 { "fifo_underrun", XM_TXE_FIFO_UR, GM_TXE_FIFO_UR },
319 { "fifo_overflow", XM_RXE_FIFO_OV, GM_RXE_FIFO_OV },
320
321 { "rx_toolong", XM_RXF_LNG_ERR, GM_RXF_LNG_ERR },
322 { "rx_jabber", XM_RXF_JAB_PKT, GM_RXF_JAB_PKT },
323 { "rx_runt", XM_RXE_RUNT, GM_RXE_FRAG },
324 { "rx_too_long", XM_RXF_LNG_ERR, GM_RXF_LNG_ERR },
325 { "rx_fcs_error", XM_RXF_FCS_ERR, GM_RXF_FCS_ERR },
326 };
327
328 static int skge_get_stats_count(struct net_device *dev)
329 {
330 return ARRAY_SIZE(skge_stats);
331 }
332
333 static void skge_get_ethtool_stats(struct net_device *dev,
334 struct ethtool_stats *stats, u64 *data)
335 {
336 struct skge_port *skge = netdev_priv(dev);
337
338 if (skge->hw->chip_id == CHIP_ID_GENESIS)
339 genesis_get_stats(skge, data);
340 else
341 yukon_get_stats(skge, data);
342 }
343
344 /* Use hardware MIB variables for critical path statistics and
345 * transmit feedback not reported at interrupt.
346 * Other errors are accounted for in interrupt handler.
347 */
348 static struct net_device_stats *skge_get_stats(struct net_device *dev)
349 {
350 struct skge_port *skge = netdev_priv(dev);
351 u64 data[ARRAY_SIZE(skge_stats)];
352
353 if (skge->hw->chip_id == CHIP_ID_GENESIS)
354 genesis_get_stats(skge, data);
355 else
356 yukon_get_stats(skge, data);
357
358 skge->net_stats.tx_bytes = data[0];
359 skge->net_stats.rx_bytes = data[1];
360 skge->net_stats.tx_packets = data[2] + data[4] + data[6];
361 skge->net_stats.rx_packets = data[3] + data[5] + data[7];
362 skge->net_stats.multicast = data[3] + data[5];
363 skge->net_stats.collisions = data[10];
364 skge->net_stats.tx_aborted_errors = data[12];
365
366 return &skge->net_stats;
367 }
368
369 static void skge_get_strings(struct net_device *dev, u32 stringset, u8 *data)
370 {
371 int i;
372
373 switch (stringset) {
374 case ETH_SS_STATS:
375 for (i = 0; i < ARRAY_SIZE(skge_stats); i++)
376 memcpy(data + i * ETH_GSTRING_LEN,
377 skge_stats[i].name, ETH_GSTRING_LEN);
378 break;
379 }
380 }
381
382 static void skge_get_ring_param(struct net_device *dev,
383 struct ethtool_ringparam *p)
384 {
385 struct skge_port *skge = netdev_priv(dev);
386
387 p->rx_max_pending = MAX_RX_RING_SIZE;
388 p->tx_max_pending = MAX_TX_RING_SIZE;
389 p->rx_mini_max_pending = 0;
390 p->rx_jumbo_max_pending = 0;
391
392 p->rx_pending = skge->rx_ring.count;
393 p->tx_pending = skge->tx_ring.count;
394 p->rx_mini_pending = 0;
395 p->rx_jumbo_pending = 0;
396 }
397
398 static int skge_set_ring_param(struct net_device *dev,
399 struct ethtool_ringparam *p)
400 {
401 struct skge_port *skge = netdev_priv(dev);
402 int err;
403
404 if (p->rx_pending == 0 || p->rx_pending > MAX_RX_RING_SIZE ||
405 p->tx_pending < TX_LOW_WATER || p->tx_pending > MAX_TX_RING_SIZE)
406 return -EINVAL;
407
408 skge->rx_ring.count = p->rx_pending;
409 skge->tx_ring.count = p->tx_pending;
410
411 if (netif_running(dev)) {
412 skge_down(dev);
413 err = skge_up(dev);
414 if (err)
415 dev_close(dev);
416 }
417
418 return 0;
419 }
420
421 static u32 skge_get_msglevel(struct net_device *netdev)
422 {
423 struct skge_port *skge = netdev_priv(netdev);
424 return skge->msg_enable;
425 }
426
427 static void skge_set_msglevel(struct net_device *netdev, u32 value)
428 {
429 struct skge_port *skge = netdev_priv(netdev);
430 skge->msg_enable = value;
431 }
432
433 static int skge_nway_reset(struct net_device *dev)
434 {
435 struct skge_port *skge = netdev_priv(dev);
436
437 if (skge->autoneg != AUTONEG_ENABLE || !netif_running(dev))
438 return -EINVAL;
439
440 skge_phy_reset(skge);
441 return 0;
442 }
443
444 static int skge_set_sg(struct net_device *dev, u32 data)
445 {
446 struct skge_port *skge = netdev_priv(dev);
447 struct skge_hw *hw = skge->hw;
448
449 if (hw->chip_id == CHIP_ID_GENESIS && data)
450 return -EOPNOTSUPP;
451 return ethtool_op_set_sg(dev, data);
452 }
453
454 static int skge_set_tx_csum(struct net_device *dev, u32 data)
455 {
456 struct skge_port *skge = netdev_priv(dev);
457 struct skge_hw *hw = skge->hw;
458
459 if (hw->chip_id == CHIP_ID_GENESIS && data)
460 return -EOPNOTSUPP;
461
462 return ethtool_op_set_tx_csum(dev, data);
463 }
464
465 static u32 skge_get_rx_csum(struct net_device *dev)
466 {
467 struct skge_port *skge = netdev_priv(dev);
468
469 return skge->rx_csum;
470 }
471
472 /* Only Yukon supports checksum offload. */
473 static int skge_set_rx_csum(struct net_device *dev, u32 data)
474 {
475 struct skge_port *skge = netdev_priv(dev);
476
477 if (skge->hw->chip_id == CHIP_ID_GENESIS && data)
478 return -EOPNOTSUPP;
479
480 skge->rx_csum = data;
481 return 0;
482 }
483
484 static void skge_get_pauseparam(struct net_device *dev,
485 struct ethtool_pauseparam *ecmd)
486 {
487 struct skge_port *skge = netdev_priv(dev);
488
489 ecmd->rx_pause = (skge->flow_control == FLOW_MODE_SYMMETRIC)
490 || (skge->flow_control == FLOW_MODE_SYM_OR_REM);
491 ecmd->tx_pause = ecmd->rx_pause || (skge->flow_control == FLOW_MODE_LOC_SEND);
492
493 ecmd->autoneg = ecmd->rx_pause || ecmd->tx_pause;
494 }
495
496 static int skge_set_pauseparam(struct net_device *dev,
497 struct ethtool_pauseparam *ecmd)
498 {
499 struct skge_port *skge = netdev_priv(dev);
500 struct ethtool_pauseparam old;
501
502 skge_get_pauseparam(dev, &old);
503
504 if (ecmd->autoneg != old.autoneg)
505 skge->flow_control = ecmd->autoneg ? FLOW_MODE_NONE : FLOW_MODE_SYMMETRIC;
506 else {
507 if (ecmd->rx_pause && ecmd->tx_pause)
508 skge->flow_control = FLOW_MODE_SYMMETRIC;
509 else if (ecmd->rx_pause && !ecmd->tx_pause)
510 skge->flow_control = FLOW_MODE_SYM_OR_REM;
511 else if (!ecmd->rx_pause && ecmd->tx_pause)
512 skge->flow_control = FLOW_MODE_LOC_SEND;
513 else
514 skge->flow_control = FLOW_MODE_NONE;
515 }
516
517 if (netif_running(dev))
518 skge_phy_reset(skge);
519
520 return 0;
521 }
522
523 /* Chip internal frequency for clock calculations */
524 static inline u32 hwkhz(const struct skge_hw *hw)
525 {
526 return (hw->chip_id == CHIP_ID_GENESIS) ? 53125 : 78125;
527 }
528
529 /* Chip HZ to microseconds */
530 static inline u32 skge_clk2usec(const struct skge_hw *hw, u32 ticks)
531 {
532 return (ticks * 1000) / hwkhz(hw);
533 }
534
535 /* Microseconds to chip HZ */
536 static inline u32 skge_usecs2clk(const struct skge_hw *hw, u32 usec)
537 {
538 return hwkhz(hw) * usec / 1000;
539 }
540
541 static int skge_get_coalesce(struct net_device *dev,
542 struct ethtool_coalesce *ecmd)
543 {
544 struct skge_port *skge = netdev_priv(dev);
545 struct skge_hw *hw = skge->hw;
546 int port = skge->port;
547
548 ecmd->rx_coalesce_usecs = 0;
549 ecmd->tx_coalesce_usecs = 0;
550
551 if (skge_read32(hw, B2_IRQM_CTRL) & TIM_START) {
552 u32 delay = skge_clk2usec(hw, skge_read32(hw, B2_IRQM_INI));
553 u32 msk = skge_read32(hw, B2_IRQM_MSK);
554
555 if (msk & rxirqmask[port])
556 ecmd->rx_coalesce_usecs = delay;
557 if (msk & txirqmask[port])
558 ecmd->tx_coalesce_usecs = delay;
559 }
560
561 return 0;
562 }
563
564 /* Note: interrupt timer is per board, but can turn on/off per port */
565 static int skge_set_coalesce(struct net_device *dev,
566 struct ethtool_coalesce *ecmd)
567 {
568 struct skge_port *skge = netdev_priv(dev);
569 struct skge_hw *hw = skge->hw;
570 int port = skge->port;
571 u32 msk = skge_read32(hw, B2_IRQM_MSK);
572 u32 delay = 25;
573
574 if (ecmd->rx_coalesce_usecs == 0)
575 msk &= ~rxirqmask[port];
576 else if (ecmd->rx_coalesce_usecs < 25 ||
577 ecmd->rx_coalesce_usecs > 33333)
578 return -EINVAL;
579 else {
580 msk |= rxirqmask[port];
581 delay = ecmd->rx_coalesce_usecs;
582 }
583
584 if (ecmd->tx_coalesce_usecs == 0)
585 msk &= ~txirqmask[port];
586 else if (ecmd->tx_coalesce_usecs < 25 ||
587 ecmd->tx_coalesce_usecs > 33333)
588 return -EINVAL;
589 else {
590 msk |= txirqmask[port];
591 delay = min(delay, ecmd->rx_coalesce_usecs);
592 }
593
594 skge_write32(hw, B2_IRQM_MSK, msk);
595 if (msk == 0)
596 skge_write32(hw, B2_IRQM_CTRL, TIM_STOP);
597 else {
598 skge_write32(hw, B2_IRQM_INI, skge_usecs2clk(hw, delay));
599 skge_write32(hw, B2_IRQM_CTRL, TIM_START);
600 }
601 return 0;
602 }
603
604 enum led_mode { LED_MODE_OFF, LED_MODE_ON, LED_MODE_TST };
605 static void skge_led(struct skge_port *skge, enum led_mode mode)
606 {
607 struct skge_hw *hw = skge->hw;
608 int port = skge->port;
609
610 mutex_lock(&hw->phy_mutex);
611 if (hw->chip_id == CHIP_ID_GENESIS) {
612 switch (mode) {
613 case LED_MODE_OFF:
614 if (hw->phy_type == SK_PHY_BCOM)
615 xm_phy_write(hw, port, PHY_BCOM_P_EXT_CTRL, PHY_B_PEC_LED_OFF);
616 else {
617 skge_write32(hw, SK_REG(port, TX_LED_VAL), 0);
618 skge_write8(hw, SK_REG(port, TX_LED_CTRL), LED_T_OFF);
619 }
620 skge_write8(hw, SK_REG(port, LNK_LED_REG), LINKLED_OFF);
621 skge_write32(hw, SK_REG(port, RX_LED_VAL), 0);
622 skge_write8(hw, SK_REG(port, RX_LED_CTRL), LED_T_OFF);
623 break;
624
625 case LED_MODE_ON:
626 skge_write8(hw, SK_REG(port, LNK_LED_REG), LINKLED_ON);
627 skge_write8(hw, SK_REG(port, LNK_LED_REG), LINKLED_LINKSYNC_ON);
628
629 skge_write8(hw, SK_REG(port, RX_LED_CTRL), LED_START);
630 skge_write8(hw, SK_REG(port, TX_LED_CTRL), LED_START);
631
632 break;
633
634 case LED_MODE_TST:
635 skge_write8(hw, SK_REG(port, RX_LED_TST), LED_T_ON);
636 skge_write32(hw, SK_REG(port, RX_LED_VAL), 100);
637 skge_write8(hw, SK_REG(port, RX_LED_CTRL), LED_START);
638
639 if (hw->phy_type == SK_PHY_BCOM)
640 xm_phy_write(hw, port, PHY_BCOM_P_EXT_CTRL, PHY_B_PEC_LED_ON);
641 else {
642 skge_write8(hw, SK_REG(port, TX_LED_TST), LED_T_ON);
643 skge_write32(hw, SK_REG(port, TX_LED_VAL), 100);
644 skge_write8(hw, SK_REG(port, TX_LED_CTRL), LED_START);
645 }
646
647 }
648 } else {
649 switch (mode) {
650 case LED_MODE_OFF:
651 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, 0);
652 gm_phy_write(hw, port, PHY_MARV_LED_OVER,
653 PHY_M_LED_MO_DUP(MO_LED_OFF) |
654 PHY_M_LED_MO_10(MO_LED_OFF) |
655 PHY_M_LED_MO_100(MO_LED_OFF) |
656 PHY_M_LED_MO_1000(MO_LED_OFF) |
657 PHY_M_LED_MO_RX(MO_LED_OFF));
658 break;
659 case LED_MODE_ON:
660 gm_phy_write(hw, port, PHY_MARV_LED_CTRL,
661 PHY_M_LED_PULS_DUR(PULS_170MS) |
662 PHY_M_LED_BLINK_RT(BLINK_84MS) |
663 PHY_M_LEDC_TX_CTRL |
664 PHY_M_LEDC_DP_CTRL);
665
666 gm_phy_write(hw, port, PHY_MARV_LED_OVER,
667 PHY_M_LED_MO_RX(MO_LED_OFF) |
668 (skge->speed == SPEED_100 ?
669 PHY_M_LED_MO_100(MO_LED_ON) : 0));
670 break;
671 case LED_MODE_TST:
672 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, 0);
673 gm_phy_write(hw, port, PHY_MARV_LED_OVER,
674 PHY_M_LED_MO_DUP(MO_LED_ON) |
675 PHY_M_LED_MO_10(MO_LED_ON) |
676 PHY_M_LED_MO_100(MO_LED_ON) |
677 PHY_M_LED_MO_1000(MO_LED_ON) |
678 PHY_M_LED_MO_RX(MO_LED_ON));
679 }
680 }
681 mutex_unlock(&hw->phy_mutex);
682 }
683
684 /* blink LED's for finding board */
685 static int skge_phys_id(struct net_device *dev, u32 data)
686 {
687 struct skge_port *skge = netdev_priv(dev);
688 unsigned long ms;
689 enum led_mode mode = LED_MODE_TST;
690
691 if (!data || data > (u32)(MAX_SCHEDULE_TIMEOUT / HZ))
692 ms = jiffies_to_msecs(MAX_SCHEDULE_TIMEOUT / HZ) * 1000;
693 else
694 ms = data * 1000;
695
696 while (ms > 0) {
697 skge_led(skge, mode);
698 mode ^= LED_MODE_TST;
699
700 if (msleep_interruptible(BLINK_MS))
701 break;
702 ms -= BLINK_MS;
703 }
704
705 /* back to regular LED state */
706 skge_led(skge, netif_running(dev) ? LED_MODE_ON : LED_MODE_OFF);
707
708 return 0;
709 }
710
711 static const struct ethtool_ops skge_ethtool_ops = {
712 .get_settings = skge_get_settings,
713 .set_settings = skge_set_settings,
714 .get_drvinfo = skge_get_drvinfo,
715 .get_regs_len = skge_get_regs_len,
716 .get_regs = skge_get_regs,
717 .get_wol = skge_get_wol,
718 .set_wol = skge_set_wol,
719 .get_msglevel = skge_get_msglevel,
720 .set_msglevel = skge_set_msglevel,
721 .nway_reset = skge_nway_reset,
722 .get_link = ethtool_op_get_link,
723 .get_ringparam = skge_get_ring_param,
724 .set_ringparam = skge_set_ring_param,
725 .get_pauseparam = skge_get_pauseparam,
726 .set_pauseparam = skge_set_pauseparam,
727 .get_coalesce = skge_get_coalesce,
728 .set_coalesce = skge_set_coalesce,
729 .get_sg = ethtool_op_get_sg,
730 .set_sg = skge_set_sg,
731 .get_tx_csum = ethtool_op_get_tx_csum,
732 .set_tx_csum = skge_set_tx_csum,
733 .get_rx_csum = skge_get_rx_csum,
734 .set_rx_csum = skge_set_rx_csum,
735 .get_strings = skge_get_strings,
736 .phys_id = skge_phys_id,
737 .get_stats_count = skge_get_stats_count,
738 .get_ethtool_stats = skge_get_ethtool_stats,
739 .get_perm_addr = ethtool_op_get_perm_addr,
740 };
741
742 /*
743 * Allocate ring elements and chain them together
744 * One-to-one association of board descriptors with ring elements
745 */
746 static int skge_ring_alloc(struct skge_ring *ring, void *vaddr, u32 base)
747 {
748 struct skge_tx_desc *d;
749 struct skge_element *e;
750 int i;
751
752 ring->start = kcalloc(ring->count, sizeof(*e), GFP_KERNEL);
753 if (!ring->start)
754 return -ENOMEM;
755
756 for (i = 0, e = ring->start, d = vaddr; i < ring->count; i++, e++, d++) {
757 e->desc = d;
758 if (i == ring->count - 1) {
759 e->next = ring->start;
760 d->next_offset = base;
761 } else {
762 e->next = e + 1;
763 d->next_offset = base + (i+1) * sizeof(*d);
764 }
765 }
766 ring->to_use = ring->to_clean = ring->start;
767
768 return 0;
769 }
770
771 /* Allocate and setup a new buffer for receiving */
772 static void skge_rx_setup(struct skge_port *skge, struct skge_element *e,
773 struct sk_buff *skb, unsigned int bufsize)
774 {
775 struct skge_rx_desc *rd = e->desc;
776 u64 map;
777
778 map = pci_map_single(skge->hw->pdev, skb->data, bufsize,
779 PCI_DMA_FROMDEVICE);
780
781 rd->dma_lo = map;
782 rd->dma_hi = map >> 32;
783 e->skb = skb;
784 rd->csum1_start = ETH_HLEN;
785 rd->csum2_start = ETH_HLEN;
786 rd->csum1 = 0;
787 rd->csum2 = 0;
788
789 wmb();
790
791 rd->control = BMU_OWN | BMU_STF | BMU_IRQ_EOF | BMU_TCP_CHECK | bufsize;
792 pci_unmap_addr_set(e, mapaddr, map);
793 pci_unmap_len_set(e, maplen, bufsize);
794 }
795
796 /* Resume receiving using existing skb,
797 * Note: DMA address is not changed by chip.
798 * MTU not changed while receiver active.
799 */
800 static inline void skge_rx_reuse(struct skge_element *e, unsigned int size)
801 {
802 struct skge_rx_desc *rd = e->desc;
803
804 rd->csum2 = 0;
805 rd->csum2_start = ETH_HLEN;
806
807 wmb();
808
809 rd->control = BMU_OWN | BMU_STF | BMU_IRQ_EOF | BMU_TCP_CHECK | size;
810 }
811
812
813 /* Free all buffers in receive ring, assumes receiver stopped */
814 static void skge_rx_clean(struct skge_port *skge)
815 {
816 struct skge_hw *hw = skge->hw;
817 struct skge_ring *ring = &skge->rx_ring;
818 struct skge_element *e;
819
820 e = ring->start;
821 do {
822 struct skge_rx_desc *rd = e->desc;
823 rd->control = 0;
824 if (e->skb) {
825 pci_unmap_single(hw->pdev,
826 pci_unmap_addr(e, mapaddr),
827 pci_unmap_len(e, maplen),
828 PCI_DMA_FROMDEVICE);
829 dev_kfree_skb(e->skb);
830 e->skb = NULL;
831 }
832 } while ((e = e->next) != ring->start);
833 }
834
835
836 /* Allocate buffers for receive ring
837 * For receive: to_clean is next received frame.
838 */
839 static int skge_rx_fill(struct net_device *dev)
840 {
841 struct skge_port *skge = netdev_priv(dev);
842 struct skge_ring *ring = &skge->rx_ring;
843 struct skge_element *e;
844
845 e = ring->start;
846 do {
847 struct sk_buff *skb;
848
849 skb = __netdev_alloc_skb(dev, skge->rx_buf_size + NET_IP_ALIGN,
850 GFP_KERNEL);
851 if (!skb)
852 return -ENOMEM;
853
854 skb_reserve(skb, NET_IP_ALIGN);
855 skge_rx_setup(skge, e, skb, skge->rx_buf_size);
856 } while ( (e = e->next) != ring->start);
857
858 ring->to_clean = ring->start;
859 return 0;
860 }
861
862 static const char *skge_pause(enum pause_status status)
863 {
864 switch(status) {
865 case FLOW_STAT_NONE:
866 return "none";
867 case FLOW_STAT_REM_SEND:
868 return "rx only";
869 case FLOW_STAT_LOC_SEND:
870 return "tx_only";
871 case FLOW_STAT_SYMMETRIC: /* Both station may send PAUSE */
872 return "both";
873 default:
874 return "indeterminated";
875 }
876 }
877
878
879 static void skge_link_up(struct skge_port *skge)
880 {
881 skge_write8(skge->hw, SK_REG(skge->port, LNK_LED_REG),
882 LED_BLK_OFF|LED_SYNC_OFF|LED_ON);
883
884 netif_carrier_on(skge->netdev);
885 netif_wake_queue(skge->netdev);
886
887 if (netif_msg_link(skge)) {
888 printk(KERN_INFO PFX
889 "%s: Link is up at %d Mbps, %s duplex, flow control %s\n",
890 skge->netdev->name, skge->speed,
891 skge->duplex == DUPLEX_FULL ? "full" : "half",
892 skge_pause(skge->flow_status));
893 }
894 }
895
896 static void skge_link_down(struct skge_port *skge)
897 {
898 skge_write8(skge->hw, SK_REG(skge->port, LNK_LED_REG), LED_OFF);
899 netif_carrier_off(skge->netdev);
900 netif_stop_queue(skge->netdev);
901
902 if (netif_msg_link(skge))
903 printk(KERN_INFO PFX "%s: Link is down.\n", skge->netdev->name);
904 }
905
906
907 static void xm_link_down(struct skge_hw *hw, int port)
908 {
909 struct net_device *dev = hw->dev[port];
910 struct skge_port *skge = netdev_priv(dev);
911 u16 cmd, msk;
912
913 if (hw->phy_type == SK_PHY_XMAC) {
914 msk = xm_read16(hw, port, XM_IMSK);
915 msk |= XM_IS_INP_ASS | XM_IS_LIPA_RC | XM_IS_RX_PAGE | XM_IS_AND;
916 xm_write16(hw, port, XM_IMSK, msk);
917 }
918
919 cmd = xm_read16(hw, port, XM_MMU_CMD);
920 cmd &= ~(XM_MMU_ENA_RX | XM_MMU_ENA_TX);
921 xm_write16(hw, port, XM_MMU_CMD, cmd);
922 /* dummy read to ensure writing */
923 (void) xm_read16(hw, port, XM_MMU_CMD);
924
925 if (netif_carrier_ok(dev))
926 skge_link_down(skge);
927 }
928
929 static int __xm_phy_read(struct skge_hw *hw, int port, u16 reg, u16 *val)
930 {
931 int i;
932
933 xm_write16(hw, port, XM_PHY_ADDR, reg | hw->phy_addr);
934 *val = xm_read16(hw, port, XM_PHY_DATA);
935
936 if (hw->phy_type == SK_PHY_XMAC)
937 goto ready;
938
939 for (i = 0; i < PHY_RETRIES; i++) {
940 if (xm_read16(hw, port, XM_MMU_CMD) & XM_MMU_PHY_RDY)
941 goto ready;
942 udelay(1);
943 }
944
945 return -ETIMEDOUT;
946 ready:
947 *val = xm_read16(hw, port, XM_PHY_DATA);
948
949 return 0;
950 }
951
952 static u16 xm_phy_read(struct skge_hw *hw, int port, u16 reg)
953 {
954 u16 v = 0;
955 if (__xm_phy_read(hw, port, reg, &v))
956 printk(KERN_WARNING PFX "%s: phy read timed out\n",
957 hw->dev[port]->name);
958 return v;
959 }
960
961 static int xm_phy_write(struct skge_hw *hw, int port, u16 reg, u16 val)
962 {
963 int i;
964
965 xm_write16(hw, port, XM_PHY_ADDR, reg | hw->phy_addr);
966 for (i = 0; i < PHY_RETRIES; i++) {
967 if (!(xm_read16(hw, port, XM_MMU_CMD) & XM_MMU_PHY_BUSY))
968 goto ready;
969 udelay(1);
970 }
971 return -EIO;
972
973 ready:
974 xm_write16(hw, port, XM_PHY_DATA, val);
975 for (i = 0; i < PHY_RETRIES; i++) {
976 if (!(xm_read16(hw, port, XM_MMU_CMD) & XM_MMU_PHY_BUSY))
977 return 0;
978 udelay(1);
979 }
980 return -ETIMEDOUT;
981 }
982
983 static void genesis_init(struct skge_hw *hw)
984 {
985 /* set blink source counter */
986 skge_write32(hw, B2_BSC_INI, (SK_BLK_DUR * SK_FACT_53) / 100);
987 skge_write8(hw, B2_BSC_CTRL, BSC_START);
988
989 /* configure mac arbiter */
990 skge_write16(hw, B3_MA_TO_CTRL, MA_RST_CLR);
991
992 /* configure mac arbiter timeout values */
993 skge_write8(hw, B3_MA_TOINI_RX1, SK_MAC_TO_53);
994 skge_write8(hw, B3_MA_TOINI_RX2, SK_MAC_TO_53);
995 skge_write8(hw, B3_MA_TOINI_TX1, SK_MAC_TO_53);
996 skge_write8(hw, B3_MA_TOINI_TX2, SK_MAC_TO_53);
997
998 skge_write8(hw, B3_MA_RCINI_RX1, 0);
999 skge_write8(hw, B3_MA_RCINI_RX2, 0);
1000 skge_write8(hw, B3_MA_RCINI_TX1, 0);
1001 skge_write8(hw, B3_MA_RCINI_TX2, 0);
1002
1003 /* configure packet arbiter timeout */
1004 skge_write16(hw, B3_PA_CTRL, PA_RST_CLR);
1005 skge_write16(hw, B3_PA_TOINI_RX1, SK_PKT_TO_MAX);
1006 skge_write16(hw, B3_PA_TOINI_TX1, SK_PKT_TO_MAX);
1007 skge_write16(hw, B3_PA_TOINI_RX2, SK_PKT_TO_MAX);
1008 skge_write16(hw, B3_PA_TOINI_TX2, SK_PKT_TO_MAX);
1009 }
1010
1011 static void genesis_reset(struct skge_hw *hw, int port)
1012 {
1013 const u8 zero[8] = { 0 };
1014
1015 skge_write8(hw, SK_REG(port, GMAC_IRQ_MSK), 0);
1016
1017 /* reset the statistics module */
1018 xm_write32(hw, port, XM_GP_PORT, XM_GP_RES_STAT);
1019 xm_write16(hw, port, XM_IMSK, 0xffff); /* disable XMAC IRQs */
1020 xm_write32(hw, port, XM_MODE, 0); /* clear Mode Reg */
1021 xm_write16(hw, port, XM_TX_CMD, 0); /* reset TX CMD Reg */
1022 xm_write16(hw, port, XM_RX_CMD, 0); /* reset RX CMD Reg */
1023
1024 /* disable Broadcom PHY IRQ */
1025 if (hw->phy_type == SK_PHY_BCOM)
1026 xm_write16(hw, port, PHY_BCOM_INT_MASK, 0xffff);
1027
1028 xm_outhash(hw, port, XM_HSM, zero);
1029 }
1030
1031
1032 /* Convert mode to MII values */
1033 static const u16 phy_pause_map[] = {
1034 [FLOW_MODE_NONE] = 0,
1035 [FLOW_MODE_LOC_SEND] = PHY_AN_PAUSE_ASYM,
1036 [FLOW_MODE_SYMMETRIC] = PHY_AN_PAUSE_CAP,
1037 [FLOW_MODE_SYM_OR_REM] = PHY_AN_PAUSE_CAP | PHY_AN_PAUSE_ASYM,
1038 };
1039
1040 /* special defines for FIBER (88E1011S only) */
1041 static const u16 fiber_pause_map[] = {
1042 [FLOW_MODE_NONE] = PHY_X_P_NO_PAUSE,
1043 [FLOW_MODE_LOC_SEND] = PHY_X_P_ASYM_MD,
1044 [FLOW_MODE_SYMMETRIC] = PHY_X_P_SYM_MD,
1045 [FLOW_MODE_SYM_OR_REM] = PHY_X_P_BOTH_MD,
1046 };
1047
1048
1049 /* Check status of Broadcom phy link */
1050 static void bcom_check_link(struct skge_hw *hw, int port)
1051 {
1052 struct net_device *dev = hw->dev[port];
1053 struct skge_port *skge = netdev_priv(dev);
1054 u16 status;
1055
1056 /* read twice because of latch */
1057 (void) xm_phy_read(hw, port, PHY_BCOM_STAT);
1058 status = xm_phy_read(hw, port, PHY_BCOM_STAT);
1059
1060 if ((status & PHY_ST_LSYNC) == 0) {
1061 xm_link_down(hw, port);
1062 return;
1063 }
1064
1065 if (skge->autoneg == AUTONEG_ENABLE) {
1066 u16 lpa, aux;
1067
1068 if (!(status & PHY_ST_AN_OVER))
1069 return;
1070
1071 lpa = xm_phy_read(hw, port, PHY_XMAC_AUNE_LP);
1072 if (lpa & PHY_B_AN_RF) {
1073 printk(KERN_NOTICE PFX "%s: remote fault\n",
1074 dev->name);
1075 return;
1076 }
1077
1078 aux = xm_phy_read(hw, port, PHY_BCOM_AUX_STAT);
1079
1080 /* Check Duplex mismatch */
1081 switch (aux & PHY_B_AS_AN_RES_MSK) {
1082 case PHY_B_RES_1000FD:
1083 skge->duplex = DUPLEX_FULL;
1084 break;
1085 case PHY_B_RES_1000HD:
1086 skge->duplex = DUPLEX_HALF;
1087 break;
1088 default:
1089 printk(KERN_NOTICE PFX "%s: duplex mismatch\n",
1090 dev->name);
1091 return;
1092 }
1093
1094 /* We are using IEEE 802.3z/D5.0 Table 37-4 */
1095 switch (aux & PHY_B_AS_PAUSE_MSK) {
1096 case PHY_B_AS_PAUSE_MSK:
1097 skge->flow_status = FLOW_STAT_SYMMETRIC;
1098 break;
1099 case PHY_B_AS_PRR:
1100 skge->flow_status = FLOW_STAT_REM_SEND;
1101 break;
1102 case PHY_B_AS_PRT:
1103 skge->flow_status = FLOW_STAT_LOC_SEND;
1104 break;
1105 default:
1106 skge->flow_status = FLOW_STAT_NONE;
1107 }
1108 skge->speed = SPEED_1000;
1109 }
1110
1111 if (!netif_carrier_ok(dev))
1112 genesis_link_up(skge);
1113 }
1114
1115 /* Broadcom 5400 only supports giagabit! SysKonnect did not put an additional
1116 * Phy on for 100 or 10Mbit operation
1117 */
1118 static void bcom_phy_init(struct skge_port *skge)
1119 {
1120 struct skge_hw *hw = skge->hw;
1121 int port = skge->port;
1122 int i;
1123 u16 id1, r, ext, ctl;
1124
1125 /* magic workaround patterns for Broadcom */
1126 static const struct {
1127 u16 reg;
1128 u16 val;
1129 } A1hack[] = {
1130 { 0x18, 0x0c20 }, { 0x17, 0x0012 }, { 0x15, 0x1104 },
1131 { 0x17, 0x0013 }, { 0x15, 0x0404 }, { 0x17, 0x8006 },
1132 { 0x15, 0x0132 }, { 0x17, 0x8006 }, { 0x15, 0x0232 },
1133 { 0x17, 0x800D }, { 0x15, 0x000F }, { 0x18, 0x0420 },
1134 }, C0hack[] = {
1135 { 0x18, 0x0c20 }, { 0x17, 0x0012 }, { 0x15, 0x1204 },
1136 { 0x17, 0x0013 }, { 0x15, 0x0A04 }, { 0x18, 0x0420 },
1137 };
1138
1139 /* read Id from external PHY (all have the same address) */
1140 id1 = xm_phy_read(hw, port, PHY_XMAC_ID1);
1141
1142 /* Optimize MDIO transfer by suppressing preamble. */
1143 r = xm_read16(hw, port, XM_MMU_CMD);
1144 r |= XM_MMU_NO_PRE;
1145 xm_write16(hw, port, XM_MMU_CMD,r);
1146
1147 switch (id1) {
1148 case PHY_BCOM_ID1_C0:
1149 /*
1150 * Workaround BCOM Errata for the C0 type.
1151 * Write magic patterns to reserved registers.
1152 */
1153 for (i = 0; i < ARRAY_SIZE(C0hack); i++)
1154 xm_phy_write(hw, port,
1155 C0hack[i].reg, C0hack[i].val);
1156
1157 break;
1158 case PHY_BCOM_ID1_A1:
1159 /*
1160 * Workaround BCOM Errata for the A1 type.
1161 * Write magic patterns to reserved registers.
1162 */
1163 for (i = 0; i < ARRAY_SIZE(A1hack); i++)
1164 xm_phy_write(hw, port,
1165 A1hack[i].reg, A1hack[i].val);
1166 break;
1167 }
1168
1169 /*
1170 * Workaround BCOM Errata (#10523) for all BCom PHYs.
1171 * Disable Power Management after reset.
1172 */
1173 r = xm_phy_read(hw, port, PHY_BCOM_AUX_CTRL);
1174 r |= PHY_B_AC_DIS_PM;
1175 xm_phy_write(hw, port, PHY_BCOM_AUX_CTRL, r);
1176
1177 /* Dummy read */
1178 xm_read16(hw, port, XM_ISRC);
1179
1180 ext = PHY_B_PEC_EN_LTR; /* enable tx led */
1181 ctl = PHY_CT_SP1000; /* always 1000mbit */
1182
1183 if (skge->autoneg == AUTONEG_ENABLE) {
1184 /*
1185 * Workaround BCOM Errata #1 for the C5 type.
1186 * 1000Base-T Link Acquisition Failure in Slave Mode
1187 * Set Repeater/DTE bit 10 of the 1000Base-T Control Register
1188 */
1189 u16 adv = PHY_B_1000C_RD;
1190 if (skge->advertising & ADVERTISED_1000baseT_Half)
1191 adv |= PHY_B_1000C_AHD;
1192 if (skge->advertising & ADVERTISED_1000baseT_Full)
1193 adv |= PHY_B_1000C_AFD;
1194 xm_phy_write(hw, port, PHY_BCOM_1000T_CTRL, adv);
1195
1196 ctl |= PHY_CT_ANE | PHY_CT_RE_CFG;
1197 } else {
1198 if (skge->duplex == DUPLEX_FULL)
1199 ctl |= PHY_CT_DUP_MD;
1200 /* Force to slave */
1201 xm_phy_write(hw, port, PHY_BCOM_1000T_CTRL, PHY_B_1000C_MSE);
1202 }
1203
1204 /* Set autonegotiation pause parameters */
1205 xm_phy_write(hw, port, PHY_BCOM_AUNE_ADV,
1206 phy_pause_map[skge->flow_control] | PHY_AN_CSMA);
1207
1208 /* Handle Jumbo frames */
1209 if (hw->dev[port]->mtu > ETH_DATA_LEN) {
1210 xm_phy_write(hw, port, PHY_BCOM_AUX_CTRL,
1211 PHY_B_AC_TX_TST | PHY_B_AC_LONG_PACK);
1212
1213 ext |= PHY_B_PEC_HIGH_LA;
1214
1215 }
1216
1217 xm_phy_write(hw, port, PHY_BCOM_P_EXT_CTRL, ext);
1218 xm_phy_write(hw, port, PHY_BCOM_CTRL, ctl);
1219
1220 /* Use link status change interrupt */
1221 xm_phy_write(hw, port, PHY_BCOM_INT_MASK, PHY_B_DEF_MSK);
1222 }
1223
1224 static void xm_phy_init(struct skge_port *skge)
1225 {
1226 struct skge_hw *hw = skge->hw;
1227 int port = skge->port;
1228 u16 ctrl = 0;
1229
1230 if (skge->autoneg == AUTONEG_ENABLE) {
1231 if (skge->advertising & ADVERTISED_1000baseT_Half)
1232 ctrl |= PHY_X_AN_HD;
1233 if (skge->advertising & ADVERTISED_1000baseT_Full)
1234 ctrl |= PHY_X_AN_FD;
1235
1236 ctrl |= fiber_pause_map[skge->flow_control];
1237
1238 xm_phy_write(hw, port, PHY_XMAC_AUNE_ADV, ctrl);
1239
1240 /* Restart Auto-negotiation */
1241 ctrl = PHY_CT_ANE | PHY_CT_RE_CFG;
1242 } else {
1243 /* Set DuplexMode in Config register */
1244 if (skge->duplex == DUPLEX_FULL)
1245 ctrl |= PHY_CT_DUP_MD;
1246 /*
1247 * Do NOT enable Auto-negotiation here. This would hold
1248 * the link down because no IDLEs are transmitted
1249 */
1250 }
1251
1252 xm_phy_write(hw, port, PHY_XMAC_CTRL, ctrl);
1253
1254 /* Poll PHY for status changes */
1255 schedule_delayed_work(&skge->link_thread, LINK_HZ);
1256 }
1257
1258 static void xm_check_link(struct net_device *dev)
1259 {
1260 struct skge_port *skge = netdev_priv(dev);
1261 struct skge_hw *hw = skge->hw;
1262 int port = skge->port;
1263 u16 status;
1264
1265 /* read twice because of latch */
1266 (void) xm_phy_read(hw, port, PHY_XMAC_STAT);
1267 status = xm_phy_read(hw, port, PHY_XMAC_STAT);
1268
1269 if ((status & PHY_ST_LSYNC) == 0) {
1270 xm_link_down(hw, port);
1271 return;
1272 }
1273
1274 if (skge->autoneg == AUTONEG_ENABLE) {
1275 u16 lpa, res;
1276
1277 if (!(status & PHY_ST_AN_OVER))
1278 return;
1279
1280 lpa = xm_phy_read(hw, port, PHY_XMAC_AUNE_LP);
1281 if (lpa & PHY_B_AN_RF) {
1282 printk(KERN_NOTICE PFX "%s: remote fault\n",
1283 dev->name);
1284 return;
1285 }
1286
1287 res = xm_phy_read(hw, port, PHY_XMAC_RES_ABI);
1288
1289 /* Check Duplex mismatch */
1290 switch (res & (PHY_X_RS_HD | PHY_X_RS_FD)) {
1291 case PHY_X_RS_FD:
1292 skge->duplex = DUPLEX_FULL;
1293 break;
1294 case PHY_X_RS_HD:
1295 skge->duplex = DUPLEX_HALF;
1296 break;
1297 default:
1298 printk(KERN_NOTICE PFX "%s: duplex mismatch\n",
1299 dev->name);
1300 return;
1301 }
1302
1303 /* We are using IEEE 802.3z/D5.0 Table 37-4 */
1304 if ((skge->flow_control == FLOW_MODE_SYMMETRIC ||
1305 skge->flow_control == FLOW_MODE_SYM_OR_REM) &&
1306 (lpa & PHY_X_P_SYM_MD))
1307 skge->flow_status = FLOW_STAT_SYMMETRIC;
1308 else if (skge->flow_control == FLOW_MODE_SYM_OR_REM &&
1309 (lpa & PHY_X_RS_PAUSE) == PHY_X_P_ASYM_MD)
1310 /* Enable PAUSE receive, disable PAUSE transmit */
1311 skge->flow_status = FLOW_STAT_REM_SEND;
1312 else if (skge->flow_control == FLOW_MODE_LOC_SEND &&
1313 (lpa & PHY_X_RS_PAUSE) == PHY_X_P_BOTH_MD)
1314 /* Disable PAUSE receive, enable PAUSE transmit */
1315 skge->flow_status = FLOW_STAT_LOC_SEND;
1316 else
1317 skge->flow_status = FLOW_STAT_NONE;
1318
1319 skge->speed = SPEED_1000;
1320 }
1321
1322 if (!netif_carrier_ok(dev))
1323 genesis_link_up(skge);
1324 }
1325
1326 /* Poll to check for link coming up.
1327 * Since internal PHY is wired to a level triggered pin, can't
1328 * get an interrupt when carrier is detected.
1329 */
1330 static void xm_link_timer(struct work_struct *work)
1331 {
1332 struct skge_port *skge =
1333 container_of(work, struct skge_port, link_thread.work);
1334 struct net_device *dev = skge->netdev;
1335 struct skge_hw *hw = skge->hw;
1336 int port = skge->port;
1337
1338 if (!netif_running(dev))
1339 return;
1340
1341 if (netif_carrier_ok(dev)) {
1342 xm_read16(hw, port, XM_ISRC);
1343 if (!(xm_read16(hw, port, XM_ISRC) & XM_IS_INP_ASS))
1344 goto nochange;
1345 } else {
1346 if (xm_read32(hw, port, XM_GP_PORT) & XM_GP_INP_ASS)
1347 goto nochange;
1348 xm_read16(hw, port, XM_ISRC);
1349 if (xm_read16(hw, port, XM_ISRC) & XM_IS_INP_ASS)
1350 goto nochange;
1351 }
1352
1353 mutex_lock(&hw->phy_mutex);
1354 xm_check_link(dev);
1355 mutex_unlock(&hw->phy_mutex);
1356
1357 nochange:
1358 schedule_delayed_work(&skge->link_thread, LINK_HZ);
1359 }
1360
1361 static void genesis_mac_init(struct skge_hw *hw, int port)
1362 {
1363 struct net_device *dev = hw->dev[port];
1364 struct skge_port *skge = netdev_priv(dev);
1365 int jumbo = hw->dev[port]->mtu > ETH_DATA_LEN;
1366 int i;
1367 u32 r;
1368 const u8 zero[6] = { 0 };
1369
1370 for (i = 0; i < 10; i++) {
1371 skge_write16(hw, SK_REG(port, TX_MFF_CTRL1),
1372 MFF_SET_MAC_RST);
1373 if (skge_read16(hw, SK_REG(port, TX_MFF_CTRL1)) & MFF_SET_MAC_RST)
1374 goto reset_ok;
1375 udelay(1);
1376 }
1377
1378 printk(KERN_WARNING PFX "%s: genesis reset failed\n", dev->name);
1379
1380 reset_ok:
1381 /* Unreset the XMAC. */
1382 skge_write16(hw, SK_REG(port, TX_MFF_CTRL1), MFF_CLR_MAC_RST);
1383
1384 /*
1385 * Perform additional initialization for external PHYs,
1386 * namely for the 1000baseTX cards that use the XMAC's
1387 * GMII mode.
1388 */
1389 if (hw->phy_type != SK_PHY_XMAC) {
1390 /* Take external Phy out of reset */
1391 r = skge_read32(hw, B2_GP_IO);
1392 if (port == 0)
1393 r |= GP_DIR_0|GP_IO_0;
1394 else
1395 r |= GP_DIR_2|GP_IO_2;
1396
1397 skge_write32(hw, B2_GP_IO, r);
1398
1399 /* Enable GMII interface */
1400 xm_write16(hw, port, XM_HW_CFG, XM_HW_GMII_MD);
1401 }
1402
1403
1404 switch(hw->phy_type) {
1405 case SK_PHY_XMAC:
1406 xm_phy_init(skge);
1407 break;
1408 case SK_PHY_BCOM:
1409 bcom_phy_init(skge);
1410 bcom_check_link(hw, port);
1411 }
1412
1413 /* Set Station Address */
1414 xm_outaddr(hw, port, XM_SA, dev->dev_addr);
1415
1416 /* We don't use match addresses so clear */
1417 for (i = 1; i < 16; i++)
1418 xm_outaddr(hw, port, XM_EXM(i), zero);
1419
1420 /* Clear MIB counters */
1421 xm_write16(hw, port, XM_STAT_CMD,
1422 XM_SC_CLR_RXC | XM_SC_CLR_TXC);
1423 /* Clear two times according to Errata #3 */
1424 xm_write16(hw, port, XM_STAT_CMD,
1425 XM_SC_CLR_RXC | XM_SC_CLR_TXC);
1426
1427 /* configure Rx High Water Mark (XM_RX_HI_WM) */
1428 xm_write16(hw, port, XM_RX_HI_WM, 1450);
1429
1430 /* We don't need the FCS appended to the packet. */
1431 r = XM_RX_LENERR_OK | XM_RX_STRIP_FCS;
1432 if (jumbo)
1433 r |= XM_RX_BIG_PK_OK;
1434
1435 if (skge->duplex == DUPLEX_HALF) {
1436 /*
1437 * If in manual half duplex mode the other side might be in
1438 * full duplex mode, so ignore if a carrier extension is not seen
1439 * on frames received
1440 */
1441 r |= XM_RX_DIS_CEXT;
1442 }
1443 xm_write16(hw, port, XM_RX_CMD, r);
1444
1445
1446 /* We want short frames padded to 60 bytes. */
1447 xm_write16(hw, port, XM_TX_CMD, XM_TX_AUTO_PAD);
1448
1449 /*
1450 * Bump up the transmit threshold. This helps hold off transmit
1451 * underruns when we're blasting traffic from both ports at once.
1452 */
1453 xm_write16(hw, port, XM_TX_THR, 512);
1454
1455 /*
1456 * Enable the reception of all error frames. This is is
1457 * a necessary evil due to the design of the XMAC. The
1458 * XMAC's receive FIFO is only 8K in size, however jumbo
1459 * frames can be up to 9000 bytes in length. When bad
1460 * frame filtering is enabled, the XMAC's RX FIFO operates
1461 * in 'store and forward' mode. For this to work, the
1462 * entire frame has to fit into the FIFO, but that means
1463 * that jumbo frames larger than 8192 bytes will be
1464 * truncated. Disabling all bad frame filtering causes
1465 * the RX FIFO to operate in streaming mode, in which
1466 * case the XMAC will start transferring frames out of the
1467 * RX FIFO as soon as the FIFO threshold is reached.
1468 */
1469 xm_write32(hw, port, XM_MODE, XM_DEF_MODE);
1470
1471
1472 /*
1473 * Initialize the Receive Counter Event Mask (XM_RX_EV_MSK)
1474 * - Enable all bits excepting 'Octets Rx OK Low CntOv'
1475 * and 'Octets Rx OK Hi Cnt Ov'.
1476 */
1477 xm_write32(hw, port, XM_RX_EV_MSK, XMR_DEF_MSK);
1478
1479 /*
1480 * Initialize the Transmit Counter Event Mask (XM_TX_EV_MSK)
1481 * - Enable all bits excepting 'Octets Tx OK Low CntOv'
1482 * and 'Octets Tx OK Hi Cnt Ov'.
1483 */
1484 xm_write32(hw, port, XM_TX_EV_MSK, XMT_DEF_MSK);
1485
1486 /* Configure MAC arbiter */
1487 skge_write16(hw, B3_MA_TO_CTRL, MA_RST_CLR);
1488
1489 /* configure timeout values */
1490 skge_write8(hw, B3_MA_TOINI_RX1, 72);
1491 skge_write8(hw, B3_MA_TOINI_RX2, 72);
1492 skge_write8(hw, B3_MA_TOINI_TX1, 72);
1493 skge_write8(hw, B3_MA_TOINI_TX2, 72);
1494
1495 skge_write8(hw, B3_MA_RCINI_RX1, 0);
1496 skge_write8(hw, B3_MA_RCINI_RX2, 0);
1497 skge_write8(hw, B3_MA_RCINI_TX1, 0);
1498 skge_write8(hw, B3_MA_RCINI_TX2, 0);
1499
1500 /* Configure Rx MAC FIFO */
1501 skge_write8(hw, SK_REG(port, RX_MFF_CTRL2), MFF_RST_CLR);
1502 skge_write16(hw, SK_REG(port, RX_MFF_CTRL1), MFF_ENA_TIM_PAT);
1503 skge_write8(hw, SK_REG(port, RX_MFF_CTRL2), MFF_ENA_OP_MD);
1504
1505 /* Configure Tx MAC FIFO */
1506 skge_write8(hw, SK_REG(port, TX_MFF_CTRL2), MFF_RST_CLR);
1507 skge_write16(hw, SK_REG(port, TX_MFF_CTRL1), MFF_TX_CTRL_DEF);
1508 skge_write8(hw, SK_REG(port, TX_MFF_CTRL2), MFF_ENA_OP_MD);
1509
1510 if (jumbo) {
1511 /* Enable frame flushing if jumbo frames used */
1512 skge_write16(hw, SK_REG(port,RX_MFF_CTRL1), MFF_ENA_FLUSH);
1513 } else {
1514 /* enable timeout timers if normal frames */
1515 skge_write16(hw, B3_PA_CTRL,
1516 (port == 0) ? PA_ENA_TO_TX1 : PA_ENA_TO_TX2);
1517 }
1518 }
1519
1520 static void genesis_stop(struct skge_port *skge)
1521 {
1522 struct skge_hw *hw = skge->hw;
1523 int port = skge->port;
1524 u32 reg;
1525
1526 genesis_reset(hw, port);
1527
1528 /* Clear Tx packet arbiter timeout IRQ */
1529 skge_write16(hw, B3_PA_CTRL,
1530 port == 0 ? PA_CLR_TO_TX1 : PA_CLR_TO_TX2);
1531
1532 /*
1533 * If the transfer sticks at the MAC the STOP command will not
1534 * terminate if we don't flush the XMAC's transmit FIFO !
1535 */
1536 xm_write32(hw, port, XM_MODE,
1537 xm_read32(hw, port, XM_MODE)|XM_MD_FTF);
1538
1539
1540 /* Reset the MAC */
1541 skge_write16(hw, SK_REG(port, TX_MFF_CTRL1), MFF_SET_MAC_RST);
1542
1543 /* For external PHYs there must be special handling */
1544 if (hw->phy_type != SK_PHY_XMAC) {
1545 reg = skge_read32(hw, B2_GP_IO);
1546 if (port == 0) {
1547 reg |= GP_DIR_0;
1548 reg &= ~GP_IO_0;
1549 } else {
1550 reg |= GP_DIR_2;
1551 reg &= ~GP_IO_2;
1552 }
1553 skge_write32(hw, B2_GP_IO, reg);
1554 skge_read32(hw, B2_GP_IO);
1555 }
1556
1557 xm_write16(hw, port, XM_MMU_CMD,
1558 xm_read16(hw, port, XM_MMU_CMD)
1559 & ~(XM_MMU_ENA_RX | XM_MMU_ENA_TX));
1560
1561 xm_read16(hw, port, XM_MMU_CMD);
1562 }
1563
1564
1565 static void genesis_get_stats(struct skge_port *skge, u64 *data)
1566 {
1567 struct skge_hw *hw = skge->hw;
1568 int port = skge->port;
1569 int i;
1570 unsigned long timeout = jiffies + HZ;
1571
1572 xm_write16(hw, port,
1573 XM_STAT_CMD, XM_SC_SNP_TXC | XM_SC_SNP_RXC);
1574
1575 /* wait for update to complete */
1576 while (xm_read16(hw, port, XM_STAT_CMD)
1577 & (XM_SC_SNP_TXC | XM_SC_SNP_RXC)) {
1578 if (time_after(jiffies, timeout))
1579 break;
1580 udelay(10);
1581 }
1582
1583 /* special case for 64 bit octet counter */
1584 data[0] = (u64) xm_read32(hw, port, XM_TXO_OK_HI) << 32
1585 | xm_read32(hw, port, XM_TXO_OK_LO);
1586 data[1] = (u64) xm_read32(hw, port, XM_RXO_OK_HI) << 32
1587 | xm_read32(hw, port, XM_RXO_OK_LO);
1588
1589 for (i = 2; i < ARRAY_SIZE(skge_stats); i++)
1590 data[i] = xm_read32(hw, port, skge_stats[i].xmac_offset);
1591 }
1592
1593 static void genesis_mac_intr(struct skge_hw *hw, int port)
1594 {
1595 struct skge_port *skge = netdev_priv(hw->dev[port]);
1596 u16 status = xm_read16(hw, port, XM_ISRC);
1597
1598 if (netif_msg_intr(skge))
1599 printk(KERN_DEBUG PFX "%s: mac interrupt status 0x%x\n",
1600 skge->netdev->name, status);
1601
1602 if (hw->phy_type == SK_PHY_XMAC &&
1603 (status & (XM_IS_INP_ASS | XM_IS_LIPA_RC)))
1604 xm_link_down(hw, port);
1605
1606 if (status & XM_IS_TXF_UR) {
1607 xm_write32(hw, port, XM_MODE, XM_MD_FTF);
1608 ++skge->net_stats.tx_fifo_errors;
1609 }
1610 if (status & XM_IS_RXF_OV) {
1611 xm_write32(hw, port, XM_MODE, XM_MD_FRF);
1612 ++skge->net_stats.rx_fifo_errors;
1613 }
1614 }
1615
1616 static void genesis_link_up(struct skge_port *skge)
1617 {
1618 struct skge_hw *hw = skge->hw;
1619 int port = skge->port;
1620 u16 cmd, msk;
1621 u32 mode;
1622
1623 cmd = xm_read16(hw, port, XM_MMU_CMD);
1624
1625 /*
1626 * enabling pause frame reception is required for 1000BT
1627 * because the XMAC is not reset if the link is going down
1628 */
1629 if (skge->flow_status == FLOW_STAT_NONE ||
1630 skge->flow_status == FLOW_STAT_LOC_SEND)
1631 /* Disable Pause Frame Reception */
1632 cmd |= XM_MMU_IGN_PF;
1633 else
1634 /* Enable Pause Frame Reception */
1635 cmd &= ~XM_MMU_IGN_PF;
1636
1637 xm_write16(hw, port, XM_MMU_CMD, cmd);
1638
1639 mode = xm_read32(hw, port, XM_MODE);
1640 if (skge->flow_status== FLOW_STAT_SYMMETRIC ||
1641 skge->flow_status == FLOW_STAT_LOC_SEND) {
1642 /*
1643 * Configure Pause Frame Generation
1644 * Use internal and external Pause Frame Generation.
1645 * Sending pause frames is edge triggered.
1646 * Send a Pause frame with the maximum pause time if
1647 * internal oder external FIFO full condition occurs.
1648 * Send a zero pause time frame to re-start transmission.
1649 */
1650 /* XM_PAUSE_DA = '010000C28001' (default) */
1651 /* XM_MAC_PTIME = 0xffff (maximum) */
1652 /* remember this value is defined in big endian (!) */
1653 xm_write16(hw, port, XM_MAC_PTIME, 0xffff);
1654
1655 mode |= XM_PAUSE_MODE;
1656 skge_write16(hw, SK_REG(port, RX_MFF_CTRL1), MFF_ENA_PAUSE);
1657 } else {
1658 /*
1659 * disable pause frame generation is required for 1000BT
1660 * because the XMAC is not reset if the link is going down
1661 */
1662 /* Disable Pause Mode in Mode Register */
1663 mode &= ~XM_PAUSE_MODE;
1664
1665 skge_write16(hw, SK_REG(port, RX_MFF_CTRL1), MFF_DIS_PAUSE);
1666 }
1667
1668 xm_write32(hw, port, XM_MODE, mode);
1669 msk = XM_DEF_MSK;
1670 if (hw->phy_type != SK_PHY_XMAC)
1671 msk |= XM_IS_INP_ASS; /* disable GP0 interrupt bit */
1672
1673 xm_write16(hw, port, XM_IMSK, msk);
1674 xm_read16(hw, port, XM_ISRC);
1675
1676 /* get MMU Command Reg. */
1677 cmd = xm_read16(hw, port, XM_MMU_CMD);
1678 if (hw->phy_type != SK_PHY_XMAC && skge->duplex == DUPLEX_FULL)
1679 cmd |= XM_MMU_GMII_FD;
1680
1681 /*
1682 * Workaround BCOM Errata (#10523) for all BCom Phys
1683 * Enable Power Management after link up
1684 */
1685 if (hw->phy_type == SK_PHY_BCOM) {
1686 xm_phy_write(hw, port, PHY_BCOM_AUX_CTRL,
1687 xm_phy_read(hw, port, PHY_BCOM_AUX_CTRL)
1688 & ~PHY_B_AC_DIS_PM);
1689 xm_phy_write(hw, port, PHY_BCOM_INT_MASK, PHY_B_DEF_MSK);
1690 }
1691
1692 /* enable Rx/Tx */
1693 xm_write16(hw, port, XM_MMU_CMD,
1694 cmd | XM_MMU_ENA_RX | XM_MMU_ENA_TX);
1695 skge_link_up(skge);
1696 }
1697
1698
1699 static inline void bcom_phy_intr(struct skge_port *skge)
1700 {
1701 struct skge_hw *hw = skge->hw;
1702 int port = skge->port;
1703 u16 isrc;
1704
1705 isrc = xm_phy_read(hw, port, PHY_BCOM_INT_STAT);
1706 if (netif_msg_intr(skge))
1707 printk(KERN_DEBUG PFX "%s: phy interrupt status 0x%x\n",
1708 skge->netdev->name, isrc);
1709
1710 if (isrc & PHY_B_IS_PSE)
1711 printk(KERN_ERR PFX "%s: uncorrectable pair swap error\n",
1712 hw->dev[port]->name);
1713
1714 /* Workaround BCom Errata:
1715 * enable and disable loopback mode if "NO HCD" occurs.
1716 */
1717 if (isrc & PHY_B_IS_NO_HDCL) {
1718 u16 ctrl = xm_phy_read(hw, port, PHY_BCOM_CTRL);
1719 xm_phy_write(hw, port, PHY_BCOM_CTRL,
1720 ctrl | PHY_CT_LOOP);
1721 xm_phy_write(hw, port, PHY_BCOM_CTRL,
1722 ctrl & ~PHY_CT_LOOP);
1723 }
1724
1725 if (isrc & (PHY_B_IS_AN_PR | PHY_B_IS_LST_CHANGE))
1726 bcom_check_link(hw, port);
1727
1728 }
1729
1730 static int gm_phy_write(struct skge_hw *hw, int port, u16 reg, u16 val)
1731 {
1732 int i;
1733
1734 gma_write16(hw, port, GM_SMI_DATA, val);
1735 gma_write16(hw, port, GM_SMI_CTRL,
1736 GM_SMI_CT_PHY_AD(hw->phy_addr) | GM_SMI_CT_REG_AD(reg));
1737 for (i = 0; i < PHY_RETRIES; i++) {
1738 udelay(1);
1739
1740 if (!(gma_read16(hw, port, GM_SMI_CTRL) & GM_SMI_CT_BUSY))
1741 return 0;
1742 }
1743
1744 printk(KERN_WARNING PFX "%s: phy write timeout\n",
1745 hw->dev[port]->name);
1746 return -EIO;
1747 }
1748
1749 static int __gm_phy_read(struct skge_hw *hw, int port, u16 reg, u16 *val)
1750 {
1751 int i;
1752
1753 gma_write16(hw, port, GM_SMI_CTRL,
1754 GM_SMI_CT_PHY_AD(hw->phy_addr)
1755 | GM_SMI_CT_REG_AD(reg) | GM_SMI_CT_OP_RD);
1756
1757 for (i = 0; i < PHY_RETRIES; i++) {
1758 udelay(1);
1759 if (gma_read16(hw, port, GM_SMI_CTRL) & GM_SMI_CT_RD_VAL)
1760 goto ready;
1761 }
1762
1763 return -ETIMEDOUT;
1764 ready:
1765 *val = gma_read16(hw, port, GM_SMI_DATA);
1766 return 0;
1767 }
1768
1769 static u16 gm_phy_read(struct skge_hw *hw, int port, u16 reg)
1770 {
1771 u16 v = 0;
1772 if (__gm_phy_read(hw, port, reg, &v))
1773 printk(KERN_WARNING PFX "%s: phy read timeout\n",
1774 hw->dev[port]->name);
1775 return v;
1776 }
1777
1778 /* Marvell Phy Initialization */
1779 static void yukon_init(struct skge_hw *hw, int port)
1780 {
1781 struct skge_port *skge = netdev_priv(hw->dev[port]);
1782 u16 ctrl, ct1000, adv;
1783
1784 if (skge->autoneg == AUTONEG_ENABLE) {
1785 u16 ectrl = gm_phy_read(hw, port, PHY_MARV_EXT_CTRL);
1786
1787 ectrl &= ~(PHY_M_EC_M_DSC_MSK | PHY_M_EC_S_DSC_MSK |
1788 PHY_M_EC_MAC_S_MSK);
1789 ectrl |= PHY_M_EC_MAC_S(MAC_TX_CLK_25_MHZ);
1790
1791 ectrl |= PHY_M_EC_M_DSC(0) | PHY_M_EC_S_DSC(1);
1792
1793 gm_phy_write(hw, port, PHY_MARV_EXT_CTRL, ectrl);
1794 }
1795
1796 ctrl = gm_phy_read(hw, port, PHY_MARV_CTRL);
1797 if (skge->autoneg == AUTONEG_DISABLE)
1798 ctrl &= ~PHY_CT_ANE;
1799
1800 ctrl |= PHY_CT_RESET;
1801 gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
1802
1803 ctrl = 0;
1804 ct1000 = 0;
1805 adv = PHY_AN_CSMA;
1806
1807 if (skge->autoneg == AUTONEG_ENABLE) {
1808 if (hw->copper) {
1809 if (skge->advertising & ADVERTISED_1000baseT_Full)
1810 ct1000 |= PHY_M_1000C_AFD;
1811 if (skge->advertising & ADVERTISED_1000baseT_Half)
1812 ct1000 |= PHY_M_1000C_AHD;
1813 if (skge->advertising & ADVERTISED_100baseT_Full)
1814 adv |= PHY_M_AN_100_FD;
1815 if (skge->advertising & ADVERTISED_100baseT_Half)
1816 adv |= PHY_M_AN_100_HD;
1817 if (skge->advertising & ADVERTISED_10baseT_Full)
1818 adv |= PHY_M_AN_10_FD;
1819 if (skge->advertising & ADVERTISED_10baseT_Half)
1820 adv |= PHY_M_AN_10_HD;
1821
1822 /* Set Flow-control capabilities */
1823 adv |= phy_pause_map[skge->flow_control];
1824 } else {
1825 if (skge->advertising & ADVERTISED_1000baseT_Full)
1826 adv |= PHY_M_AN_1000X_AFD;
1827 if (skge->advertising & ADVERTISED_1000baseT_Half)
1828 adv |= PHY_M_AN_1000X_AHD;
1829
1830 adv |= fiber_pause_map[skge->flow_control];
1831 }
1832
1833 /* Restart Auto-negotiation */
1834 ctrl |= PHY_CT_ANE | PHY_CT_RE_CFG;
1835 } else {
1836 /* forced speed/duplex settings */
1837 ct1000 = PHY_M_1000C_MSE;
1838
1839 if (skge->duplex == DUPLEX_FULL)
1840 ctrl |= PHY_CT_DUP_MD;
1841
1842 switch (skge->speed) {
1843 case SPEED_1000:
1844 ctrl |= PHY_CT_SP1000;
1845 break;
1846 case SPEED_100:
1847 ctrl |= PHY_CT_SP100;
1848 break;
1849 }
1850
1851 ctrl |= PHY_CT_RESET;
1852 }
1853
1854 gm_phy_write(hw, port, PHY_MARV_1000T_CTRL, ct1000);
1855
1856 gm_phy_write(hw, port, PHY_MARV_AUNE_ADV, adv);
1857 gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
1858
1859 /* Enable phy interrupt on autonegotiation complete (or link up) */
1860 if (skge->autoneg == AUTONEG_ENABLE)
1861 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_IS_AN_MSK);
1862 else
1863 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_IS_DEF_MSK);
1864 }
1865
1866 static void yukon_reset(struct skge_hw *hw, int port)
1867 {
1868 gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);/* disable PHY IRQs */
1869 gma_write16(hw, port, GM_MC_ADDR_H1, 0); /* clear MC hash */
1870 gma_write16(hw, port, GM_MC_ADDR_H2, 0);
1871 gma_write16(hw, port, GM_MC_ADDR_H3, 0);
1872 gma_write16(hw, port, GM_MC_ADDR_H4, 0);
1873
1874 gma_write16(hw, port, GM_RX_CTRL,
1875 gma_read16(hw, port, GM_RX_CTRL)
1876 | GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA);
1877 }
1878
1879 /* Apparently, early versions of Yukon-Lite had wrong chip_id? */
1880 static int is_yukon_lite_a0(struct skge_hw *hw)
1881 {
1882 u32 reg;
1883 int ret;
1884
1885 if (hw->chip_id != CHIP_ID_YUKON)
1886 return 0;
1887
1888 reg = skge_read32(hw, B2_FAR);
1889 skge_write8(hw, B2_FAR + 3, 0xff);
1890 ret = (skge_read8(hw, B2_FAR + 3) != 0);
1891 skge_write32(hw, B2_FAR, reg);
1892 return ret;
1893 }
1894
1895 static void yukon_mac_init(struct skge_hw *hw, int port)
1896 {
1897 struct skge_port *skge = netdev_priv(hw->dev[port]);
1898 int i;
1899 u32 reg;
1900 const u8 *addr = hw->dev[port]->dev_addr;
1901
1902 /* WA code for COMA mode -- set PHY reset */
1903 if (hw->chip_id == CHIP_ID_YUKON_LITE &&
1904 hw->chip_rev >= CHIP_REV_YU_LITE_A3) {
1905 reg = skge_read32(hw, B2_GP_IO);
1906 reg |= GP_DIR_9 | GP_IO_9;
1907 skge_write32(hw, B2_GP_IO, reg);
1908 }
1909
1910 /* hard reset */
1911 skge_write32(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
1912 skge_write32(hw, SK_REG(port, GMAC_CTRL), GMC_RST_SET);
1913
1914 /* WA code for COMA mode -- clear PHY reset */
1915 if (hw->chip_id == CHIP_ID_YUKON_LITE &&
1916 hw->chip_rev >= CHIP_REV_YU_LITE_A3) {
1917 reg = skge_read32(hw, B2_GP_IO);
1918 reg |= GP_DIR_9;
1919 reg &= ~GP_IO_9;
1920 skge_write32(hw, B2_GP_IO, reg);
1921 }
1922
1923 /* Set hardware config mode */
1924 reg = GPC_INT_POL_HI | GPC_DIS_FC | GPC_DIS_SLEEP |
1925 GPC_ENA_XC | GPC_ANEG_ADV_ALL_M | GPC_ENA_PAUSE;
1926 reg |= hw->copper ? GPC_HWCFG_GMII_COP : GPC_HWCFG_GMII_FIB;
1927
1928 /* Clear GMC reset */
1929 skge_write32(hw, SK_REG(port, GPHY_CTRL), reg | GPC_RST_SET);
1930 skge_write32(hw, SK_REG(port, GPHY_CTRL), reg | GPC_RST_CLR);
1931 skge_write32(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON | GMC_RST_CLR);
1932
1933 if (skge->autoneg == AUTONEG_DISABLE) {
1934 reg = GM_GPCR_AU_ALL_DIS;
1935 gma_write16(hw, port, GM_GP_CTRL,
1936 gma_read16(hw, port, GM_GP_CTRL) | reg);
1937
1938 switch (skge->speed) {
1939 case SPEED_1000:
1940 reg &= ~GM_GPCR_SPEED_100;
1941 reg |= GM_GPCR_SPEED_1000;
1942 break;
1943 case SPEED_100:
1944 reg &= ~GM_GPCR_SPEED_1000;
1945 reg |= GM_GPCR_SPEED_100;
1946 break;
1947 case SPEED_10:
1948 reg &= ~(GM_GPCR_SPEED_1000 | GM_GPCR_SPEED_100);
1949 break;
1950 }
1951
1952 if (skge->duplex == DUPLEX_FULL)
1953 reg |= GM_GPCR_DUP_FULL;
1954 } else
1955 reg = GM_GPCR_SPEED_1000 | GM_GPCR_SPEED_100 | GM_GPCR_DUP_FULL;
1956
1957 switch (skge->flow_control) {
1958 case FLOW_MODE_NONE:
1959 skge_write32(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
1960 reg |= GM_GPCR_FC_TX_DIS | GM_GPCR_FC_RX_DIS | GM_GPCR_AU_FCT_DIS;
1961 break;
1962 case FLOW_MODE_LOC_SEND:
1963 /* disable Rx flow-control */
1964 reg |= GM_GPCR_FC_RX_DIS | GM_GPCR_AU_FCT_DIS;
1965 break;
1966 case FLOW_MODE_SYMMETRIC:
1967 case FLOW_MODE_SYM_OR_REM:
1968 /* enable Tx & Rx flow-control */
1969 break;
1970 }
1971
1972 gma_write16(hw, port, GM_GP_CTRL, reg);
1973 skge_read16(hw, SK_REG(port, GMAC_IRQ_SRC));
1974
1975 yukon_init(hw, port);
1976
1977 /* MIB clear */
1978 reg = gma_read16(hw, port, GM_PHY_ADDR);
1979 gma_write16(hw, port, GM_PHY_ADDR, reg | GM_PAR_MIB_CLR);
1980
1981 for (i = 0; i < GM_MIB_CNT_SIZE; i++)
1982 gma_read16(hw, port, GM_MIB_CNT_BASE + 8*i);
1983 gma_write16(hw, port, GM_PHY_ADDR, reg);
1984
1985 /* transmit control */
1986 gma_write16(hw, port, GM_TX_CTRL, TX_COL_THR(TX_COL_DEF));
1987
1988 /* receive control reg: unicast + multicast + no FCS */
1989 gma_write16(hw, port, GM_RX_CTRL,
1990 GM_RXCR_UCF_ENA | GM_RXCR_CRC_DIS | GM_RXCR_MCF_ENA);
1991
1992 /* transmit flow control */
1993 gma_write16(hw, port, GM_TX_FLOW_CTRL, 0xffff);
1994
1995 /* transmit parameter */
1996 gma_write16(hw, port, GM_TX_PARAM,
1997 TX_JAM_LEN_VAL(TX_JAM_LEN_DEF) |
1998 TX_JAM_IPG_VAL(TX_JAM_IPG_DEF) |
1999 TX_IPG_JAM_DATA(TX_IPG_JAM_DEF));
2000
2001 /* serial mode register */
2002 reg = GM_SMOD_VLAN_ENA | IPG_DATA_VAL(IPG_DATA_DEF);
2003 if (hw->dev[port]->mtu > 1500)
2004 reg |= GM_SMOD_JUMBO_ENA;
2005
2006 gma_write16(hw, port, GM_SERIAL_MODE, reg);
2007
2008 /* physical address: used for pause frames */
2009 gma_set_addr(hw, port, GM_SRC_ADDR_1L, addr);
2010 /* virtual address for data */
2011 gma_set_addr(hw, port, GM_SRC_ADDR_2L, addr);
2012
2013 /* enable interrupt mask for counter overflows */
2014 gma_write16(hw, port, GM_TX_IRQ_MSK, 0);
2015 gma_write16(hw, port, GM_RX_IRQ_MSK, 0);
2016 gma_write16(hw, port, GM_TR_IRQ_MSK, 0);
2017
2018 /* Initialize Mac Fifo */
2019
2020 /* Configure Rx MAC FIFO */
2021 skge_write16(hw, SK_REG(port, RX_GMF_FL_MSK), RX_FF_FL_DEF_MSK);
2022 reg = GMF_OPER_ON | GMF_RX_F_FL_ON;
2023
2024 /* disable Rx GMAC FIFO Flush for YUKON-Lite Rev. A0 only */
2025 if (is_yukon_lite_a0(hw))
2026 reg &= ~GMF_RX_F_FL_ON;
2027
2028 skge_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_CLR);
2029 skge_write16(hw, SK_REG(port, RX_GMF_CTRL_T), reg);
2030 /*
2031 * because Pause Packet Truncation in GMAC is not working
2032 * we have to increase the Flush Threshold to 64 bytes
2033 * in order to flush pause packets in Rx FIFO on Yukon-1
2034 */
2035 skge_write16(hw, SK_REG(port, RX_GMF_FL_THR), RX_GMF_FL_THR_DEF+1);
2036
2037 /* Configure Tx MAC FIFO */
2038 skge_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_CLR);
2039 skge_write16(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_OPER_ON);
2040 }
2041
2042 /* Go into power down mode */
2043 static void yukon_suspend(struct skge_hw *hw, int port)
2044 {
2045 u16 ctrl;
2046
2047 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
2048 ctrl |= PHY_M_PC_POL_R_DIS;
2049 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
2050
2051 ctrl = gm_phy_read(hw, port, PHY_MARV_CTRL);
2052 ctrl |= PHY_CT_RESET;
2053 gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
2054
2055 /* switch IEEE compatible power down mode on */
2056 ctrl = gm_phy_read(hw, port, PHY_MARV_CTRL);
2057 ctrl |= PHY_CT_PDOWN;
2058 gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
2059 }
2060
2061 static void yukon_stop(struct skge_port *skge)
2062 {
2063 struct skge_hw *hw = skge->hw;
2064 int port = skge->port;
2065
2066 skge_write8(hw, SK_REG(port, GMAC_IRQ_MSK), 0);
2067 yukon_reset(hw, port);
2068
2069 gma_write16(hw, port, GM_GP_CTRL,
2070 gma_read16(hw, port, GM_GP_CTRL)
2071 & ~(GM_GPCR_TX_ENA|GM_GPCR_RX_ENA));
2072 gma_read16(hw, port, GM_GP_CTRL);
2073
2074 yukon_suspend(hw, port);
2075
2076 /* set GPHY Control reset */
2077 skge_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
2078 skge_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_SET);
2079 }
2080
2081 static void yukon_get_stats(struct skge_port *skge, u64 *data)
2082 {
2083 struct skge_hw *hw = skge->hw;
2084 int port = skge->port;
2085 int i;
2086
2087 data[0] = (u64) gma_read32(hw, port, GM_TXO_OK_HI) << 32
2088 | gma_read32(hw, port, GM_TXO_OK_LO);
2089 data[1] = (u64) gma_read32(hw, port, GM_RXO_OK_HI) << 32
2090 | gma_read32(hw, port, GM_RXO_OK_LO);
2091
2092 for (i = 2; i < ARRAY_SIZE(skge_stats); i++)
2093 data[i] = gma_read32(hw, port,
2094 skge_stats[i].gma_offset);
2095 }
2096
2097 static void yukon_mac_intr(struct skge_hw *hw, int port)
2098 {
2099 struct net_device *dev = hw->dev[port];
2100 struct skge_port *skge = netdev_priv(dev);
2101 u8 status = skge_read8(hw, SK_REG(port, GMAC_IRQ_SRC));
2102
2103 if (netif_msg_intr(skge))
2104 printk(KERN_DEBUG PFX "%s: mac interrupt status 0x%x\n",
2105 dev->name, status);
2106
2107 if (status & GM_IS_RX_FF_OR) {
2108 ++skge->net_stats.rx_fifo_errors;
2109 skge_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_CLI_RX_FO);
2110 }
2111
2112 if (status & GM_IS_TX_FF_UR) {
2113 ++skge->net_stats.tx_fifo_errors;
2114 skge_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_FU);
2115 }
2116
2117 }
2118
2119 static u16 yukon_speed(const struct skge_hw *hw, u16 aux)
2120 {
2121 switch (aux & PHY_M_PS_SPEED_MSK) {
2122 case PHY_M_PS_SPEED_1000:
2123 return SPEED_1000;
2124 case PHY_M_PS_SPEED_100:
2125 return SPEED_100;
2126 default:
2127 return SPEED_10;
2128 }
2129 }
2130
2131 static void yukon_link_up(struct skge_port *skge)
2132 {
2133 struct skge_hw *hw = skge->hw;
2134 int port = skge->port;
2135 u16 reg;
2136
2137 /* Enable Transmit FIFO Underrun */
2138 skge_write8(hw, SK_REG(port, GMAC_IRQ_MSK), GMAC_DEF_MSK);
2139
2140 reg = gma_read16(hw, port, GM_GP_CTRL);
2141 if (skge->duplex == DUPLEX_FULL || skge->autoneg == AUTONEG_ENABLE)
2142 reg |= GM_GPCR_DUP_FULL;
2143
2144 /* enable Rx/Tx */
2145 reg |= GM_GPCR_RX_ENA | GM_GPCR_TX_ENA;
2146 gma_write16(hw, port, GM_GP_CTRL, reg);
2147
2148 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_IS_DEF_MSK);
2149 skge_link_up(skge);
2150 }
2151
2152 static void yukon_link_down(struct skge_port *skge)
2153 {
2154 struct skge_hw *hw = skge->hw;
2155 int port = skge->port;
2156 u16 ctrl;
2157
2158 ctrl = gma_read16(hw, port, GM_GP_CTRL);
2159 ctrl &= ~(GM_GPCR_RX_ENA | GM_GPCR_TX_ENA);
2160 gma_write16(hw, port, GM_GP_CTRL, ctrl);
2161
2162 if (skge->flow_status == FLOW_STAT_REM_SEND) {
2163 ctrl = gm_phy_read(hw, port, PHY_MARV_AUNE_ADV);
2164 ctrl |= PHY_M_AN_ASP;
2165 /* restore Asymmetric Pause bit */
2166 gm_phy_write(hw, port, PHY_MARV_AUNE_ADV, ctrl);
2167 }
2168
2169 skge_link_down(skge);
2170
2171 yukon_init(hw, port);
2172 }
2173
2174 static void yukon_phy_intr(struct skge_port *skge)
2175 {
2176 struct skge_hw *hw = skge->hw;
2177 int port = skge->port;
2178 const char *reason = NULL;
2179 u16 istatus, phystat;
2180
2181 istatus = gm_phy_read(hw, port, PHY_MARV_INT_STAT);
2182 phystat = gm_phy_read(hw, port, PHY_MARV_PHY_STAT);
2183
2184 if (netif_msg_intr(skge))
2185 printk(KERN_DEBUG PFX "%s: phy interrupt status 0x%x 0x%x\n",
2186 skge->netdev->name, istatus, phystat);
2187
2188 if (istatus & PHY_M_IS_AN_COMPL) {
2189 if (gm_phy_read(hw, port, PHY_MARV_AUNE_LP)
2190 & PHY_M_AN_RF) {
2191 reason = "remote fault";
2192 goto failed;
2193 }
2194
2195 if (gm_phy_read(hw, port, PHY_MARV_1000T_STAT) & PHY_B_1000S_MSF) {
2196 reason = "master/slave fault";
2197 goto failed;
2198 }
2199
2200 if (!(phystat & PHY_M_PS_SPDUP_RES)) {
2201 reason = "speed/duplex";
2202 goto failed;
2203 }
2204
2205 skge->duplex = (phystat & PHY_M_PS_FULL_DUP)
2206 ? DUPLEX_FULL : DUPLEX_HALF;
2207 skge->speed = yukon_speed(hw, phystat);
2208
2209 /* We are using IEEE 802.3z/D5.0 Table 37-4 */
2210 switch (phystat & PHY_M_PS_PAUSE_MSK) {
2211 case PHY_M_PS_PAUSE_MSK:
2212 skge->flow_status = FLOW_STAT_SYMMETRIC;
2213 break;
2214 case PHY_M_PS_RX_P_EN:
2215 skge->flow_status = FLOW_STAT_REM_SEND;
2216 break;
2217 case PHY_M_PS_TX_P_EN:
2218 skge->flow_status = FLOW_STAT_LOC_SEND;
2219 break;
2220 default:
2221 skge->flow_status = FLOW_STAT_NONE;
2222 }
2223
2224 if (skge->flow_status == FLOW_STAT_NONE ||
2225 (skge->speed < SPEED_1000 && skge->duplex == DUPLEX_HALF))
2226 skge_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
2227 else
2228 skge_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
2229 yukon_link_up(skge);
2230 return;
2231 }
2232
2233 if (istatus & PHY_M_IS_LSP_CHANGE)
2234 skge->speed = yukon_speed(hw, phystat);
2235
2236 if (istatus & PHY_M_IS_DUP_CHANGE)
2237 skge->duplex = (phystat & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
2238 if (istatus & PHY_M_IS_LST_CHANGE) {
2239 if (phystat & PHY_M_PS_LINK_UP)
2240 yukon_link_up(skge);
2241 else
2242 yukon_link_down(skge);
2243 }
2244 return;
2245 failed:
2246 printk(KERN_ERR PFX "%s: autonegotiation failed (%s)\n",
2247 skge->netdev->name, reason);
2248
2249 /* XXX restart autonegotiation? */
2250 }
2251
2252 static void skge_phy_reset(struct skge_port *skge)
2253 {
2254 struct skge_hw *hw = skge->hw;
2255 int port = skge->port;
2256 struct net_device *dev = hw->dev[port];
2257
2258 netif_stop_queue(skge->netdev);
2259 netif_carrier_off(skge->netdev);
2260
2261 mutex_lock(&hw->phy_mutex);
2262 if (hw->chip_id == CHIP_ID_GENESIS) {
2263 genesis_reset(hw, port);
2264 genesis_mac_init(hw, port);
2265 } else {
2266 yukon_reset(hw, port);
2267 yukon_init(hw, port);
2268 }
2269 mutex_unlock(&hw->phy_mutex);
2270
2271 dev->set_multicast_list(dev);
2272 }
2273
2274 /* Basic MII support */
2275 static int skge_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2276 {
2277 struct mii_ioctl_data *data = if_mii(ifr);
2278 struct skge_port *skge = netdev_priv(dev);
2279 struct skge_hw *hw = skge->hw;
2280 int err = -EOPNOTSUPP;
2281
2282 if (!netif_running(dev))
2283 return -ENODEV; /* Phy still in reset */
2284
2285 switch(cmd) {
2286 case SIOCGMIIPHY:
2287 data->phy_id = hw->phy_addr;
2288
2289 /* fallthru */
2290 case SIOCGMIIREG: {
2291 u16 val = 0;
2292 mutex_lock(&hw->phy_mutex);
2293 if (hw->chip_id == CHIP_ID_GENESIS)
2294 err = __xm_phy_read(hw, skge->port, data->reg_num & 0x1f, &val);
2295 else
2296 err = __gm_phy_read(hw, skge->port, data->reg_num & 0x1f, &val);
2297 mutex_unlock(&hw->phy_mutex);
2298 data->val_out = val;
2299 break;
2300 }
2301
2302 case SIOCSMIIREG:
2303 if (!capable(CAP_NET_ADMIN))
2304 return -EPERM;
2305
2306 mutex_lock(&hw->phy_mutex);
2307 if (hw->chip_id == CHIP_ID_GENESIS)
2308 err = xm_phy_write(hw, skge->port, data->reg_num & 0x1f,
2309 data->val_in);
2310 else
2311 err = gm_phy_write(hw, skge->port, data->reg_num & 0x1f,
2312 data->val_in);
2313 mutex_unlock(&hw->phy_mutex);
2314 break;
2315 }
2316 return err;
2317 }
2318
2319 static void skge_ramset(struct skge_hw *hw, u16 q, u32 start, size_t len)
2320 {
2321 u32 end;
2322
2323 start /= 8;
2324 len /= 8;
2325 end = start + len - 1;
2326
2327 skge_write8(hw, RB_ADDR(q, RB_CTRL), RB_RST_CLR);
2328 skge_write32(hw, RB_ADDR(q, RB_START), start);
2329 skge_write32(hw, RB_ADDR(q, RB_WP), start);
2330 skge_write32(hw, RB_ADDR(q, RB_RP), start);
2331 skge_write32(hw, RB_ADDR(q, RB_END), end);
2332
2333 if (q == Q_R1 || q == Q_R2) {
2334 /* Set thresholds on receive queue's */
2335 skge_write32(hw, RB_ADDR(q, RB_RX_UTPP),
2336 start + (2*len)/3);
2337 skge_write32(hw, RB_ADDR(q, RB_RX_LTPP),
2338 start + (len/3));
2339 } else {
2340 /* Enable store & forward on Tx queue's because
2341 * Tx FIFO is only 4K on Genesis and 1K on Yukon
2342 */
2343 skge_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_STFWD);
2344 }
2345
2346 skge_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_OP_MD);
2347 }
2348
2349 /* Setup Bus Memory Interface */
2350 static void skge_qset(struct skge_port *skge, u16 q,
2351 const struct skge_element *e)
2352 {
2353 struct skge_hw *hw = skge->hw;
2354 u32 watermark = 0x600;
2355 u64 base = skge->dma + (e->desc - skge->mem);
2356
2357 /* optimization to reduce window on 32bit/33mhz */
2358 if ((skge_read16(hw, B0_CTST) & (CS_BUS_CLOCK | CS_BUS_SLOT_SZ)) == 0)
2359 watermark /= 2;
2360
2361 skge_write32(hw, Q_ADDR(q, Q_CSR), CSR_CLR_RESET);
2362 skge_write32(hw, Q_ADDR(q, Q_F), watermark);
2363 skge_write32(hw, Q_ADDR(q, Q_DA_H), (u32)(base >> 32));
2364 skge_write32(hw, Q_ADDR(q, Q_DA_L), (u32)base);
2365 }
2366
2367 static int skge_up(struct net_device *dev)
2368 {
2369 struct skge_port *skge = netdev_priv(dev);
2370 struct skge_hw *hw = skge->hw;
2371 int port = skge->port;
2372 u32 chunk, ram_addr;
2373 size_t rx_size, tx_size;
2374 int err;
2375
2376 if (netif_msg_ifup(skge))
2377 printk(KERN_INFO PFX "%s: enabling interface\n", dev->name);
2378
2379 if (dev->mtu > RX_BUF_SIZE)
2380 skge->rx_buf_size = dev->mtu + ETH_HLEN;
2381 else
2382 skge->rx_buf_size = RX_BUF_SIZE;
2383
2384
2385 rx_size = skge->rx_ring.count * sizeof(struct skge_rx_desc);
2386 tx_size = skge->tx_ring.count * sizeof(struct skge_tx_desc);
2387 skge->mem_size = tx_size + rx_size;
2388 skge->mem = pci_alloc_consistent(hw->pdev, skge->mem_size, &skge->dma);
2389 if (!skge->mem)
2390 return -ENOMEM;
2391
2392 BUG_ON(skge->dma & 7);
2393
2394 if ((u64)skge->dma >> 32 != ((u64) skge->dma + skge->mem_size) >> 32) {
2395 printk(KERN_ERR PFX "pci_alloc_consistent region crosses 4G boundary\n");
2396 err = -EINVAL;
2397 goto free_pci_mem;
2398 }
2399
2400 memset(skge->mem, 0, skge->mem_size);
2401
2402 err = skge_ring_alloc(&skge->rx_ring, skge->mem, skge->dma);
2403 if (err)
2404 goto free_pci_mem;
2405
2406 err = skge_rx_fill(dev);
2407 if (err)
2408 goto free_rx_ring;
2409
2410 err = skge_ring_alloc(&skge->tx_ring, skge->mem + rx_size,
2411 skge->dma + rx_size);
2412 if (err)
2413 goto free_rx_ring;
2414
2415 /* Initialize MAC */
2416 mutex_lock(&hw->phy_mutex);
2417 if (hw->chip_id == CHIP_ID_GENESIS)
2418 genesis_mac_init(hw, port);
2419 else
2420 yukon_mac_init(hw, port);
2421 mutex_unlock(&hw->phy_mutex);
2422
2423 /* Configure RAMbuffers */
2424 chunk = hw->ram_size / ((hw->ports + 1)*2);
2425 ram_addr = hw->ram_offset + 2 * chunk * port;
2426
2427 skge_ramset(hw, rxqaddr[port], ram_addr, chunk);
2428 skge_qset(skge, rxqaddr[port], skge->rx_ring.to_clean);
2429
2430 BUG_ON(skge->tx_ring.to_use != skge->tx_ring.to_clean);
2431 skge_ramset(hw, txqaddr[port], ram_addr+chunk, chunk);
2432 skge_qset(skge, txqaddr[port], skge->tx_ring.to_use);
2433
2434 /* Start receiver BMU */
2435 wmb();
2436 skge_write8(hw, Q_ADDR(rxqaddr[port], Q_CSR), CSR_START | CSR_IRQ_CL_F);
2437 skge_led(skge, LED_MODE_ON);
2438
2439 netif_poll_enable(dev);
2440 return 0;
2441
2442 free_rx_ring:
2443 skge_rx_clean(skge);
2444 kfree(skge->rx_ring.start);
2445 free_pci_mem:
2446 pci_free_consistent(hw->pdev, skge->mem_size, skge->mem, skge->dma);
2447 skge->mem = NULL;
2448
2449 return err;
2450 }
2451
2452 static int skge_down(struct net_device *dev)
2453 {
2454 struct skge_port *skge = netdev_priv(dev);
2455 struct skge_hw *hw = skge->hw;
2456 int port = skge->port;
2457
2458 if (skge->mem == NULL)
2459 return 0;
2460
2461 if (netif_msg_ifdown(skge))
2462 printk(KERN_INFO PFX "%s: disabling interface\n", dev->name);
2463
2464 netif_stop_queue(dev);
2465 netif_carrier_off(dev);
2466 if (hw->chip_id == CHIP_ID_GENESIS && hw->phy_type == SK_PHY_XMAC)
2467 cancel_rearming_delayed_work(&skge->link_thread);
2468
2469 skge_write8(skge->hw, SK_REG(skge->port, LNK_LED_REG), LED_OFF);
2470 if (hw->chip_id == CHIP_ID_GENESIS)
2471 genesis_stop(skge);
2472 else
2473 yukon_stop(skge);
2474
2475 /* Stop transmitter */
2476 skge_write8(hw, Q_ADDR(txqaddr[port], Q_CSR), CSR_STOP);
2477 skge_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL),
2478 RB_RST_SET|RB_DIS_OP_MD);
2479
2480
2481 /* Disable Force Sync bit and Enable Alloc bit */
2482 skge_write8(hw, SK_REG(port, TXA_CTRL),
2483 TXA_DIS_FSYNC | TXA_DIS_ALLOC | TXA_STOP_RC);
2484
2485 /* Stop Interval Timer and Limit Counter of Tx Arbiter */
2486 skge_write32(hw, SK_REG(port, TXA_ITI_INI), 0L);
2487 skge_write32(hw, SK_REG(port, TXA_LIM_INI), 0L);
2488
2489 /* Reset PCI FIFO */
2490 skge_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), CSR_SET_RESET);
2491 skge_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL), RB_RST_SET);
2492
2493 /* Reset the RAM Buffer async Tx queue */
2494 skge_write8(hw, RB_ADDR(port == 0 ? Q_XA1 : Q_XA2, RB_CTRL), RB_RST_SET);
2495 /* stop receiver */
2496 skge_write8(hw, Q_ADDR(rxqaddr[port], Q_CSR), CSR_STOP);
2497 skge_write32(hw, RB_ADDR(port ? Q_R2 : Q_R1, RB_CTRL),
2498 RB_RST_SET|RB_DIS_OP_MD);
2499 skge_write32(hw, Q_ADDR(rxqaddr[port], Q_CSR), CSR_SET_RESET);
2500
2501 if (hw->chip_id == CHIP_ID_GENESIS) {
2502 skge_write8(hw, SK_REG(port, TX_MFF_CTRL2), MFF_RST_SET);
2503 skge_write8(hw, SK_REG(port, RX_MFF_CTRL2), MFF_RST_SET);
2504 } else {
2505 skge_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
2506 skge_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_SET);
2507 }
2508
2509 skge_led(skge, LED_MODE_OFF);
2510
2511 netif_poll_disable(dev);
2512 skge_tx_clean(dev);
2513 skge_rx_clean(skge);
2514
2515 kfree(skge->rx_ring.start);
2516 kfree(skge->tx_ring.start);
2517 pci_free_consistent(hw->pdev, skge->mem_size, skge->mem, skge->dma);
2518 skge->mem = NULL;
2519 return 0;
2520 }
2521
2522 static inline int skge_avail(const struct skge_ring *ring)
2523 {
2524 return ((ring->to_clean > ring->to_use) ? 0 : ring->count)
2525 + (ring->to_clean - ring->to_use) - 1;
2526 }
2527
2528 static int skge_xmit_frame(struct sk_buff *skb, struct net_device *dev)
2529 {
2530 struct skge_port *skge = netdev_priv(dev);
2531 struct skge_hw *hw = skge->hw;
2532 struct skge_element *e;
2533 struct skge_tx_desc *td;
2534 int i;
2535 u32 control, len;
2536 u64 map;
2537
2538 if (skb_padto(skb, ETH_ZLEN))
2539 return NETDEV_TX_OK;
2540
2541 if (unlikely(skge_avail(&skge->tx_ring) < skb_shinfo(skb)->nr_frags + 1))
2542 return NETDEV_TX_BUSY;
2543
2544 e = skge->tx_ring.to_use;
2545 td = e->desc;
2546 BUG_ON(td->control & BMU_OWN);
2547 e->skb = skb;
2548 len = skb_headlen(skb);
2549 map = pci_map_single(hw->pdev, skb->data, len, PCI_DMA_TODEVICE);
2550 pci_unmap_addr_set(e, mapaddr, map);
2551 pci_unmap_len_set(e, maplen, len);
2552
2553 td->dma_lo = map;
2554 td->dma_hi = map >> 32;
2555
2556 if (skb->ip_summed == CHECKSUM_PARTIAL) {
2557 int offset = skb->h.raw - skb->data;
2558
2559 /* This seems backwards, but it is what the sk98lin
2560 * does. Looks like hardware is wrong?
2561 */
2562 if (skb->h.ipiph->protocol == IPPROTO_UDP
2563 && hw->chip_rev == 0 && hw->chip_id == CHIP_ID_YUKON)
2564 control = BMU_TCP_CHECK;
2565 else
2566 control = BMU_UDP_CHECK;
2567
2568 td->csum_offs = 0;
2569 td->csum_start = offset;
2570 td->csum_write = offset + skb->csum_offset;
2571 } else
2572 control = BMU_CHECK;
2573
2574 if (!skb_shinfo(skb)->nr_frags) /* single buffer i.e. no fragments */
2575 control |= BMU_EOF| BMU_IRQ_EOF;
2576 else {
2577 struct skge_tx_desc *tf = td;
2578
2579 control |= BMU_STFWD;
2580 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
2581 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2582
2583 map = pci_map_page(hw->pdev, frag->page, frag->page_offset,
2584 frag->size, PCI_DMA_TODEVICE);
2585
2586 e = e->next;
2587 e->skb = skb;
2588 tf = e->desc;
2589 BUG_ON(tf->control & BMU_OWN);
2590
2591 tf->dma_lo = map;
2592 tf->dma_hi = (u64) map >> 32;
2593 pci_unmap_addr_set(e, mapaddr, map);
2594 pci_unmap_len_set(e, maplen, frag->size);
2595
2596 tf->control = BMU_OWN | BMU_SW | control | frag->size;
2597 }
2598 tf->control |= BMU_EOF | BMU_IRQ_EOF;
2599 }
2600 /* Make sure all the descriptors written */
2601 wmb();
2602 td->control = BMU_OWN | BMU_SW | BMU_STF | control | len;
2603 wmb();
2604
2605 skge_write8(hw, Q_ADDR(txqaddr[skge->port], Q_CSR), CSR_START);
2606
2607 if (unlikely(netif_msg_tx_queued(skge)))
2608 printk(KERN_DEBUG "%s: tx queued, slot %td, len %d\n",
2609 dev->name, e - skge->tx_ring.start, skb->len);
2610
2611 skge->tx_ring.to_use = e->next;
2612 if (skge_avail(&skge->tx_ring) <= TX_LOW_WATER) {
2613 pr_debug("%s: transmit queue full\n", dev->name);
2614 netif_stop_queue(dev);
2615 }
2616
2617 dev->trans_start = jiffies;
2618
2619 return NETDEV_TX_OK;
2620 }
2621
2622
2623 /* Free resources associated with this reing element */
2624 static void skge_tx_free(struct skge_port *skge, struct skge_element *e,
2625 u32 control)
2626 {
2627 struct pci_dev *pdev = skge->hw->pdev;
2628
2629 BUG_ON(!e->skb);
2630
2631 /* skb header vs. fragment */
2632 if (control & BMU_STF)
2633 pci_unmap_single(pdev, pci_unmap_addr(e, mapaddr),
2634 pci_unmap_len(e, maplen),
2635 PCI_DMA_TODEVICE);
2636 else
2637 pci_unmap_page(pdev, pci_unmap_addr(e, mapaddr),
2638 pci_unmap_len(e, maplen),
2639 PCI_DMA_TODEVICE);
2640
2641 if (control & BMU_EOF) {
2642 if (unlikely(netif_msg_tx_done(skge)))
2643 printk(KERN_DEBUG PFX "%s: tx done slot %td\n",
2644 skge->netdev->name, e - skge->tx_ring.start);
2645
2646 dev_kfree_skb(e->skb);
2647 }
2648 e->skb = NULL;
2649 }
2650
2651 /* Free all buffers in transmit ring */
2652 static void skge_tx_clean(struct net_device *dev)
2653 {
2654 struct skge_port *skge = netdev_priv(dev);
2655 struct skge_element *e;
2656
2657 netif_tx_lock_bh(dev);
2658 for (e = skge->tx_ring.to_clean; e != skge->tx_ring.to_use; e = e->next) {
2659 struct skge_tx_desc *td = e->desc;
2660 skge_tx_free(skge, e, td->control);
2661 td->control = 0;
2662 }
2663
2664 skge->tx_ring.to_clean = e;
2665 netif_wake_queue(dev);
2666 netif_tx_unlock_bh(dev);
2667 }
2668
2669 static void skge_tx_timeout(struct net_device *dev)
2670 {
2671 struct skge_port *skge = netdev_priv(dev);
2672
2673 if (netif_msg_timer(skge))
2674 printk(KERN_DEBUG PFX "%s: tx timeout\n", dev->name);
2675
2676 skge_write8(skge->hw, Q_ADDR(txqaddr[skge->port], Q_CSR), CSR_STOP);
2677 skge_tx_clean(dev);
2678 }
2679
2680 static int skge_change_mtu(struct net_device *dev, int new_mtu)
2681 {
2682 int err;
2683
2684 if (new_mtu < ETH_ZLEN || new_mtu > ETH_JUMBO_MTU)
2685 return -EINVAL;
2686
2687 if (!netif_running(dev)) {
2688 dev->mtu = new_mtu;
2689 return 0;
2690 }
2691
2692 skge_down(dev);
2693
2694 dev->mtu = new_mtu;
2695
2696 err = skge_up(dev);
2697 if (err)
2698 dev_close(dev);
2699
2700 return err;
2701 }
2702
2703 static void genesis_set_multicast(struct net_device *dev)
2704 {
2705 struct skge_port *skge = netdev_priv(dev);
2706 struct skge_hw *hw = skge->hw;
2707 int port = skge->port;
2708 int i, count = dev->mc_count;
2709 struct dev_mc_list *list = dev->mc_list;
2710 u32 mode;
2711 u8 filter[8];
2712
2713 mode = xm_read32(hw, port, XM_MODE);
2714 mode |= XM_MD_ENA_HASH;
2715 if (dev->flags & IFF_PROMISC)
2716 mode |= XM_MD_ENA_PROM;
2717 else
2718 mode &= ~XM_MD_ENA_PROM;
2719
2720 if (dev->flags & IFF_ALLMULTI)
2721 memset(filter, 0xff, sizeof(filter));
2722 else {
2723 memset(filter, 0, sizeof(filter));
2724 for (i = 0; list && i < count; i++, list = list->next) {
2725 u32 crc, bit;
2726 crc = ether_crc_le(ETH_ALEN, list->dmi_addr);
2727 bit = ~crc & 0x3f;
2728 filter[bit/8] |= 1 << (bit%8);
2729 }
2730 }
2731
2732 xm_write32(hw, port, XM_MODE, mode);
2733 xm_outhash(hw, port, XM_HSM, filter);
2734 }
2735
2736 static void yukon_set_multicast(struct net_device *dev)
2737 {
2738 struct skge_port *skge = netdev_priv(dev);
2739 struct skge_hw *hw = skge->hw;
2740 int port = skge->port;
2741 struct dev_mc_list *list = dev->mc_list;
2742 u16 reg;
2743 u8 filter[8];
2744
2745 memset(filter, 0, sizeof(filter));
2746
2747 reg = gma_read16(hw, port, GM_RX_CTRL);
2748 reg |= GM_RXCR_UCF_ENA;
2749
2750 if (dev->flags & IFF_PROMISC) /* promiscuous */
2751 reg &= ~(GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA);
2752 else if (dev->flags & IFF_ALLMULTI) /* all multicast */
2753 memset(filter, 0xff, sizeof(filter));
2754 else if (dev->mc_count == 0) /* no multicast */
2755 reg &= ~GM_RXCR_MCF_ENA;
2756 else {
2757 int i;
2758 reg |= GM_RXCR_MCF_ENA;
2759
2760 for (i = 0; list && i < dev->mc_count; i++, list = list->next) {
2761 u32 bit = ether_crc(ETH_ALEN, list->dmi_addr) & 0x3f;
2762 filter[bit/8] |= 1 << (bit%8);
2763 }
2764 }
2765
2766
2767 gma_write16(hw, port, GM_MC_ADDR_H1,
2768 (u16)filter[0] | ((u16)filter[1] << 8));
2769 gma_write16(hw, port, GM_MC_ADDR_H2,
2770 (u16)filter[2] | ((u16)filter[3] << 8));
2771 gma_write16(hw, port, GM_MC_ADDR_H3,
2772 (u16)filter[4] | ((u16)filter[5] << 8));
2773 gma_write16(hw, port, GM_MC_ADDR_H4,
2774 (u16)filter[6] | ((u16)filter[7] << 8));
2775
2776 gma_write16(hw, port, GM_RX_CTRL, reg);
2777 }
2778
2779 static inline u16 phy_length(const struct skge_hw *hw, u32 status)
2780 {
2781 if (hw->chip_id == CHIP_ID_GENESIS)
2782 return status >> XMR_FS_LEN_SHIFT;
2783 else
2784 return status >> GMR_FS_LEN_SHIFT;
2785 }
2786
2787 static inline int bad_phy_status(const struct skge_hw *hw, u32 status)
2788 {
2789 if (hw->chip_id == CHIP_ID_GENESIS)
2790 return (status & (XMR_FS_ERR | XMR_FS_2L_VLAN)) != 0;
2791 else
2792 return (status & GMR_FS_ANY_ERR) ||
2793 (status & GMR_FS_RX_OK) == 0;
2794 }
2795
2796
2797 /* Get receive buffer from descriptor.
2798 * Handles copy of small buffers and reallocation failures
2799 */
2800 static struct sk_buff *skge_rx_get(struct net_device *dev,
2801 struct skge_element *e,
2802 u32 control, u32 status, u16 csum)
2803 {
2804 struct skge_port *skge = netdev_priv(dev);
2805 struct sk_buff *skb;
2806 u16 len = control & BMU_BBC;
2807
2808 if (unlikely(netif_msg_rx_status(skge)))
2809 printk(KERN_DEBUG PFX "%s: rx slot %td status 0x%x len %d\n",
2810 dev->name, e - skge->rx_ring.start,
2811 status, len);
2812
2813 if (len > skge->rx_buf_size)
2814 goto error;
2815
2816 if ((control & (BMU_EOF|BMU_STF)) != (BMU_STF|BMU_EOF))
2817 goto error;
2818
2819 if (bad_phy_status(skge->hw, status))
2820 goto error;
2821
2822 if (phy_length(skge->hw, status) != len)
2823 goto error;
2824
2825 if (len < RX_COPY_THRESHOLD) {
2826 skb = netdev_alloc_skb(dev, len + 2);
2827 if (!skb)
2828 goto resubmit;
2829
2830 skb_reserve(skb, 2);
2831 pci_dma_sync_single_for_cpu(skge->hw->pdev,
2832 pci_unmap_addr(e, mapaddr),
2833 len, PCI_DMA_FROMDEVICE);
2834 memcpy(skb->data, e->skb->data, len);
2835 pci_dma_sync_single_for_device(skge->hw->pdev,
2836 pci_unmap_addr(e, mapaddr),
2837 len, PCI_DMA_FROMDEVICE);
2838 skge_rx_reuse(e, skge->rx_buf_size);
2839 } else {
2840 struct sk_buff *nskb;
2841 nskb = netdev_alloc_skb(dev, skge->rx_buf_size + NET_IP_ALIGN);
2842 if (!nskb)
2843 goto resubmit;
2844
2845 skb_reserve(nskb, NET_IP_ALIGN);
2846 pci_unmap_single(skge->hw->pdev,
2847 pci_unmap_addr(e, mapaddr),
2848 pci_unmap_len(e, maplen),
2849 PCI_DMA_FROMDEVICE);
2850 skb = e->skb;
2851 prefetch(skb->data);
2852 skge_rx_setup(skge, e, nskb, skge->rx_buf_size);
2853 }
2854
2855 skb_put(skb, len);
2856 if (skge->rx_csum) {
2857 skb->csum = csum;
2858 skb->ip_summed = CHECKSUM_COMPLETE;
2859 }
2860
2861 skb->protocol = eth_type_trans(skb, dev);
2862
2863 return skb;
2864 error:
2865
2866 if (netif_msg_rx_err(skge))
2867 printk(KERN_DEBUG PFX "%s: rx err, slot %td control 0x%x status 0x%x\n",
2868 dev->name, e - skge->rx_ring.start,
2869 control, status);
2870
2871 if (skge->hw->chip_id == CHIP_ID_GENESIS) {
2872 if (status & (XMR_FS_RUNT|XMR_FS_LNG_ERR))
2873 skge->net_stats.rx_length_errors++;
2874 if (status & XMR_FS_FRA_ERR)
2875 skge->net_stats.rx_frame_errors++;
2876 if (status & XMR_FS_FCS_ERR)
2877 skge->net_stats.rx_crc_errors++;
2878 } else {
2879 if (status & (GMR_FS_LONG_ERR|GMR_FS_UN_SIZE))
2880 skge->net_stats.rx_length_errors++;
2881 if (status & GMR_FS_FRAGMENT)
2882 skge->net_stats.rx_frame_errors++;
2883 if (status & GMR_FS_CRC_ERR)
2884 skge->net_stats.rx_crc_errors++;
2885 }
2886
2887 resubmit:
2888 skge_rx_reuse(e, skge->rx_buf_size);
2889 return NULL;
2890 }
2891
2892 /* Free all buffers in Tx ring which are no longer owned by device */
2893 static void skge_tx_done(struct net_device *dev)
2894 {
2895 struct skge_port *skge = netdev_priv(dev);
2896 struct skge_ring *ring = &skge->tx_ring;
2897 struct skge_element *e;
2898
2899 skge_write8(skge->hw, Q_ADDR(txqaddr[skge->port], Q_CSR), CSR_IRQ_CL_F);
2900
2901 netif_tx_lock(dev);
2902 for (e = ring->to_clean; e != ring->to_use; e = e->next) {
2903 struct skge_tx_desc *td = e->desc;
2904
2905 if (td->control & BMU_OWN)
2906 break;
2907
2908 skge_tx_free(skge, e, td->control);
2909 }
2910 skge->tx_ring.to_clean = e;
2911
2912 if (skge_avail(&skge->tx_ring) > TX_LOW_WATER)
2913 netif_wake_queue(dev);
2914
2915 netif_tx_unlock(dev);
2916 }
2917
2918 static int skge_poll(struct net_device *dev, int *budget)
2919 {
2920 struct skge_port *skge = netdev_priv(dev);
2921 struct skge_hw *hw = skge->hw;
2922 struct skge_ring *ring = &skge->rx_ring;
2923 struct skge_element *e;
2924 unsigned long flags;
2925 int to_do = min(dev->quota, *budget);
2926 int work_done = 0;
2927
2928 skge_tx_done(dev);
2929
2930 skge_write8(hw, Q_ADDR(rxqaddr[skge->port], Q_CSR), CSR_IRQ_CL_F);
2931
2932 for (e = ring->to_clean; prefetch(e->next), work_done < to_do; e = e->next) {
2933 struct skge_rx_desc *rd = e->desc;
2934 struct sk_buff *skb;
2935 u32 control;
2936
2937 rmb();
2938 control = rd->control;
2939 if (control & BMU_OWN)
2940 break;
2941
2942 skb = skge_rx_get(dev, e, control, rd->status, rd->csum2);
2943 if (likely(skb)) {
2944 dev->last_rx = jiffies;
2945 netif_receive_skb(skb);
2946
2947 ++work_done;
2948 }
2949 }
2950 ring->to_clean = e;
2951
2952 /* restart receiver */
2953 wmb();
2954 skge_write8(hw, Q_ADDR(rxqaddr[skge->port], Q_CSR), CSR_START);
2955
2956 *budget -= work_done;
2957 dev->quota -= work_done;
2958
2959 if (work_done >= to_do)
2960 return 1; /* not done */
2961
2962 spin_lock_irqsave(&hw->hw_lock, flags);
2963 __netif_rx_complete(dev);
2964 hw->intr_mask |= irqmask[skge->port];
2965 skge_write32(hw, B0_IMSK, hw->intr_mask);
2966 skge_read32(hw, B0_IMSK);
2967 spin_unlock_irqrestore(&hw->hw_lock, flags);
2968
2969 return 0;
2970 }
2971
2972 /* Parity errors seem to happen when Genesis is connected to a switch
2973 * with no other ports present. Heartbeat error??
2974 */
2975 static void skge_mac_parity(struct skge_hw *hw, int port)
2976 {
2977 struct net_device *dev = hw->dev[port];
2978
2979 if (dev) {
2980 struct skge_port *skge = netdev_priv(dev);
2981 ++skge->net_stats.tx_heartbeat_errors;
2982 }
2983
2984 if (hw->chip_id == CHIP_ID_GENESIS)
2985 skge_write16(hw, SK_REG(port, TX_MFF_CTRL1),
2986 MFF_CLR_PERR);
2987 else
2988 /* HW-Bug #8: cleared by GMF_CLI_TX_FC instead of GMF_CLI_TX_PE */
2989 skge_write8(hw, SK_REG(port, TX_GMF_CTRL_T),
2990 (hw->chip_id == CHIP_ID_YUKON && hw->chip_rev == 0)
2991 ? GMF_CLI_TX_FC : GMF_CLI_TX_PE);
2992 }
2993
2994 static void skge_mac_intr(struct skge_hw *hw, int port)
2995 {
2996 if (hw->chip_id == CHIP_ID_GENESIS)
2997 genesis_mac_intr(hw, port);
2998 else
2999 yukon_mac_intr(hw, port);
3000 }
3001
3002 /* Handle device specific framing and timeout interrupts */
3003 static void skge_error_irq(struct skge_hw *hw)
3004 {
3005 u32 hwstatus = skge_read32(hw, B0_HWE_ISRC);
3006
3007 if (hw->chip_id == CHIP_ID_GENESIS) {
3008 /* clear xmac errors */
3009 if (hwstatus & (IS_NO_STAT_M1|IS_NO_TIST_M1))
3010 skge_write16(hw, RX_MFF_CTRL1, MFF_CLR_INSTAT);
3011 if (hwstatus & (IS_NO_STAT_M2|IS_NO_TIST_M2))
3012 skge_write16(hw, RX_MFF_CTRL2, MFF_CLR_INSTAT);
3013 } else {
3014 /* Timestamp (unused) overflow */
3015 if (hwstatus & IS_IRQ_TIST_OV)
3016 skge_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
3017 }
3018
3019 if (hwstatus & IS_RAM_RD_PAR) {
3020 printk(KERN_ERR PFX "Ram read data parity error\n");
3021 skge_write16(hw, B3_RI_CTRL, RI_CLR_RD_PERR);
3022 }
3023
3024 if (hwstatus & IS_RAM_WR_PAR) {
3025 printk(KERN_ERR PFX "Ram write data parity error\n");
3026 skge_write16(hw, B3_RI_CTRL, RI_CLR_WR_PERR);
3027 }
3028
3029 if (hwstatus & IS_M1_PAR_ERR)
3030 skge_mac_parity(hw, 0);
3031
3032 if (hwstatus & IS_M2_PAR_ERR)
3033 skge_mac_parity(hw, 1);
3034
3035 if (hwstatus & IS_R1_PAR_ERR) {
3036 printk(KERN_ERR PFX "%s: receive queue parity error\n",
3037 hw->dev[0]->name);
3038 skge_write32(hw, B0_R1_CSR, CSR_IRQ_CL_P);
3039 }
3040
3041 if (hwstatus & IS_R2_PAR_ERR) {
3042 printk(KERN_ERR PFX "%s: receive queue parity error\n",
3043 hw->dev[1]->name);
3044 skge_write32(hw, B0_R2_CSR, CSR_IRQ_CL_P);
3045 }
3046
3047 if (hwstatus & (IS_IRQ_MST_ERR|IS_IRQ_STAT)) {
3048 u16 pci_status, pci_cmd;
3049
3050 pci_read_config_word(hw->pdev, PCI_COMMAND, &pci_cmd);
3051 pci_read_config_word(hw->pdev, PCI_STATUS, &pci_status);
3052
3053 printk(KERN_ERR PFX "%s: PCI error cmd=%#x status=%#x\n",
3054 pci_name(hw->pdev), pci_cmd, pci_status);
3055
3056 /* Write the error bits back to clear them. */
3057 pci_status &= PCI_STATUS_ERROR_BITS;
3058 skge_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
3059 pci_write_config_word(hw->pdev, PCI_COMMAND,
3060 pci_cmd | PCI_COMMAND_SERR | PCI_COMMAND_PARITY);
3061 pci_write_config_word(hw->pdev, PCI_STATUS, pci_status);
3062 skge_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
3063
3064 /* if error still set then just ignore it */
3065 hwstatus = skge_read32(hw, B0_HWE_ISRC);
3066 if (hwstatus & IS_IRQ_STAT) {
3067 printk(KERN_INFO PFX "unable to clear error (so ignoring them)\n");
3068 hw->intr_mask &= ~IS_HW_ERR;
3069 }
3070 }
3071 }
3072
3073 /*
3074 * Interrupt from PHY are handled in work queue
3075 * because accessing phy registers requires spin wait which might
3076 * cause excess interrupt latency.
3077 */
3078 static void skge_extirq(struct work_struct *work)
3079 {
3080 struct skge_hw *hw = container_of(work, struct skge_hw, phy_work);
3081 int port;
3082
3083 mutex_lock(&hw->phy_mutex);
3084 for (port = 0; port < hw->ports; port++) {
3085 struct net_device *dev = hw->dev[port];
3086 struct skge_port *skge = netdev_priv(dev);
3087
3088 if (netif_running(dev)) {
3089 if (hw->chip_id != CHIP_ID_GENESIS)
3090 yukon_phy_intr(skge);
3091 else if (hw->phy_type == SK_PHY_BCOM)
3092 bcom_phy_intr(skge);
3093 }
3094 }
3095 mutex_unlock(&hw->phy_mutex);
3096
3097 spin_lock_irq(&hw->hw_lock);
3098 hw->intr_mask |= IS_EXT_REG;
3099 skge_write32(hw, B0_IMSK, hw->intr_mask);
3100 skge_read32(hw, B0_IMSK);
3101 spin_unlock_irq(&hw->hw_lock);
3102 }
3103
3104 static irqreturn_t skge_intr(int irq, void *dev_id)
3105 {
3106 struct skge_hw *hw = dev_id;
3107 u32 status;
3108 int handled = 0;
3109
3110 spin_lock(&hw->hw_lock);
3111 /* Reading this register masks IRQ */
3112 status = skge_read32(hw, B0_SP_ISRC);
3113 if (status == 0 || status == ~0)
3114 goto out;
3115
3116 handled = 1;
3117 status &= hw->intr_mask;
3118 if (status & IS_EXT_REG) {
3119 hw->intr_mask &= ~IS_EXT_REG;
3120 schedule_work(&hw->phy_work);
3121 }
3122
3123 if (status & (IS_XA1_F|IS_R1_F)) {
3124 hw->intr_mask &= ~(IS_XA1_F|IS_R1_F);
3125 netif_rx_schedule(hw->dev[0]);
3126 }
3127
3128 if (status & IS_PA_TO_TX1)
3129 skge_write16(hw, B3_PA_CTRL, PA_CLR_TO_TX1);
3130
3131 if (status & IS_PA_TO_RX1) {
3132 struct skge_port *skge = netdev_priv(hw->dev[0]);
3133
3134 ++skge->net_stats.rx_over_errors;
3135 skge_write16(hw, B3_PA_CTRL, PA_CLR_TO_RX1);
3136 }
3137
3138
3139 if (status & IS_MAC1)
3140 skge_mac_intr(hw, 0);
3141
3142 if (hw->dev[1]) {
3143 if (status & (IS_XA2_F|IS_R2_F)) {
3144 hw->intr_mask &= ~(IS_XA2_F|IS_R2_F);
3145 netif_rx_schedule(hw->dev[1]);
3146 }
3147
3148 if (status & IS_PA_TO_RX2) {
3149 struct skge_port *skge = netdev_priv(hw->dev[1]);
3150 ++skge->net_stats.rx_over_errors;
3151 skge_write16(hw, B3_PA_CTRL, PA_CLR_TO_RX2);
3152 }
3153
3154 if (status & IS_PA_TO_TX2)
3155 skge_write16(hw, B3_PA_CTRL, PA_CLR_TO_TX2);
3156
3157 if (status & IS_MAC2)
3158 skge_mac_intr(hw, 1);
3159 }
3160
3161 if (status & IS_HW_ERR)
3162 skge_error_irq(hw);
3163
3164 skge_write32(hw, B0_IMSK, hw->intr_mask);
3165 skge_read32(hw, B0_IMSK);
3166 out:
3167 spin_unlock(&hw->hw_lock);
3168
3169 return IRQ_RETVAL(handled);
3170 }
3171
3172 #ifdef CONFIG_NET_POLL_CONTROLLER
3173 static void skge_netpoll(struct net_device *dev)
3174 {
3175 struct skge_port *skge = netdev_priv(dev);
3176
3177 disable_irq(dev->irq);
3178 skge_intr(dev->irq, skge->hw);
3179 enable_irq(dev->irq);
3180 }
3181 #endif
3182
3183 static int skge_set_mac_address(struct net_device *dev, void *p)
3184 {
3185 struct skge_port *skge = netdev_priv(dev);
3186 struct skge_hw *hw = skge->hw;
3187 unsigned port = skge->port;
3188 const struct sockaddr *addr = p;
3189
3190 if (!is_valid_ether_addr(addr->sa_data))
3191 return -EADDRNOTAVAIL;
3192
3193 mutex_lock(&hw->phy_mutex);
3194 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
3195 memcpy_toio(hw->regs + B2_MAC_1 + port*8,
3196 dev->dev_addr, ETH_ALEN);
3197 memcpy_toio(hw->regs + B2_MAC_2 + port*8,
3198 dev->dev_addr, ETH_ALEN);
3199
3200 if (hw->chip_id == CHIP_ID_GENESIS)
3201 xm_outaddr(hw, port, XM_SA, dev->dev_addr);
3202 else {
3203 gma_set_addr(hw, port, GM_SRC_ADDR_1L, dev->dev_addr);
3204 gma_set_addr(hw, port, GM_SRC_ADDR_2L, dev->dev_addr);
3205 }
3206 mutex_unlock(&hw->phy_mutex);
3207
3208 return 0;
3209 }
3210
3211 static const struct {
3212 u8 id;
3213 const char *name;
3214 } skge_chips[] = {
3215 { CHIP_ID_GENESIS, "Genesis" },
3216 { CHIP_ID_YUKON, "Yukon" },
3217 { CHIP_ID_YUKON_LITE, "Yukon-Lite"},
3218 { CHIP_ID_YUKON_LP, "Yukon-LP"},
3219 };
3220
3221 static const char *skge_board_name(const struct skge_hw *hw)
3222 {
3223 int i;
3224 static char buf[16];
3225
3226 for (i = 0; i < ARRAY_SIZE(skge_chips); i++)
3227 if (skge_chips[i].id == hw->chip_id)
3228 return skge_chips[i].name;
3229
3230 snprintf(buf, sizeof buf, "chipid 0x%x", hw->chip_id);
3231 return buf;
3232 }
3233
3234
3235 /*
3236 * Setup the board data structure, but don't bring up
3237 * the port(s)
3238 */
3239 static int skge_reset(struct skge_hw *hw)
3240 {
3241 u32 reg;
3242 u16 ctst, pci_status;
3243 u8 t8, mac_cfg, pmd_type;
3244 int i;
3245
3246 ctst = skge_read16(hw, B0_CTST);
3247
3248 /* do a SW reset */
3249 skge_write8(hw, B0_CTST, CS_RST_SET);
3250 skge_write8(hw, B0_CTST, CS_RST_CLR);
3251
3252 /* clear PCI errors, if any */
3253 skge_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
3254 skge_write8(hw, B2_TST_CTRL2, 0);
3255
3256 pci_read_config_word(hw->pdev, PCI_STATUS, &pci_status);
3257 pci_write_config_word(hw->pdev, PCI_STATUS,
3258 pci_status | PCI_STATUS_ERROR_BITS);
3259 skge_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
3260 skge_write8(hw, B0_CTST, CS_MRST_CLR);
3261
3262 /* restore CLK_RUN bits (for Yukon-Lite) */
3263 skge_write16(hw, B0_CTST,
3264 ctst & (CS_CLK_RUN_HOT|CS_CLK_RUN_RST|CS_CLK_RUN_ENA));
3265
3266 hw->chip_id = skge_read8(hw, B2_CHIP_ID);
3267 hw->phy_type = skge_read8(hw, B2_E_1) & 0xf;
3268 pmd_type = skge_read8(hw, B2_PMD_TYP);
3269 hw->copper = (pmd_type == 'T' || pmd_type == '1');
3270
3271 switch (hw->chip_id) {
3272 case CHIP_ID_GENESIS:
3273 switch (hw->phy_type) {
3274 case SK_PHY_XMAC:
3275 hw->phy_addr = PHY_ADDR_XMAC;
3276 break;
3277 case SK_PHY_BCOM:
3278 hw->phy_addr = PHY_ADDR_BCOM;
3279 break;
3280 default:
3281 printk(KERN_ERR PFX "%s: unsupported phy type 0x%x\n",
3282 pci_name(hw->pdev), hw->phy_type);
3283 return -EOPNOTSUPP;
3284 }
3285 break;
3286
3287 case CHIP_ID_YUKON:
3288 case CHIP_ID_YUKON_LITE:
3289 case CHIP_ID_YUKON_LP:
3290 if (hw->phy_type < SK_PHY_MARV_COPPER && pmd_type != 'S')
3291 hw->copper = 1;
3292
3293 hw->phy_addr = PHY_ADDR_MARV;
3294 break;
3295
3296 default:
3297 printk(KERN_ERR PFX "%s: unsupported chip type 0x%x\n",
3298 pci_name(hw->pdev), hw->chip_id);
3299 return -EOPNOTSUPP;
3300 }
3301
3302 mac_cfg = skge_read8(hw, B2_MAC_CFG);
3303 hw->ports = (mac_cfg & CFG_SNG_MAC) ? 1 : 2;
3304 hw->chip_rev = (mac_cfg & CFG_CHIP_R_MSK) >> 4;
3305
3306 /* read the adapters RAM size */
3307 t8 = skge_read8(hw, B2_E_0);
3308 if (hw->chip_id == CHIP_ID_GENESIS) {
3309 if (t8 == 3) {
3310 /* special case: 4 x 64k x 36, offset = 0x80000 */
3311 hw->ram_size = 0x100000;
3312 hw->ram_offset = 0x80000;
3313 } else
3314 hw->ram_size = t8 * 512;
3315 }
3316 else if (t8 == 0)
3317 hw->ram_size = 0x20000;
3318 else
3319 hw->ram_size = t8 * 4096;
3320
3321 hw->intr_mask = IS_HW_ERR | IS_PORT_1;
3322 if (hw->ports > 1)
3323 hw->intr_mask |= IS_PORT_2;
3324
3325 if (!(hw->chip_id == CHIP_ID_GENESIS && hw->phy_type == SK_PHY_XMAC))
3326 hw->intr_mask |= IS_EXT_REG;
3327
3328 if (hw->chip_id == CHIP_ID_GENESIS)
3329 genesis_init(hw);
3330 else {
3331 /* switch power to VCC (WA for VAUX problem) */
3332 skge_write8(hw, B0_POWER_CTRL,
3333 PC_VAUX_ENA | PC_VCC_ENA | PC_VAUX_OFF | PC_VCC_ON);
3334
3335 /* avoid boards with stuck Hardware error bits */
3336 if ((skge_read32(hw, B0_ISRC) & IS_HW_ERR) &&
3337 (skge_read32(hw, B0_HWE_ISRC) & IS_IRQ_SENSOR)) {
3338 printk(KERN_WARNING PFX "stuck hardware sensor bit\n");
3339 hw->intr_mask &= ~IS_HW_ERR;
3340 }
3341
3342 /* Clear PHY COMA */
3343 skge_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
3344 pci_read_config_dword(hw->pdev, PCI_DEV_REG1, &reg);
3345 reg &= ~PCI_PHY_COMA;
3346 pci_write_config_dword(hw->pdev, PCI_DEV_REG1, reg);
3347 skge_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
3348
3349
3350 for (i = 0; i < hw->ports; i++) {
3351 skge_write16(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_SET);
3352 skge_write16(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_CLR);
3353 }
3354 }
3355
3356 /* turn off hardware timer (unused) */
3357 skge_write8(hw, B2_TI_CTRL, TIM_STOP);
3358 skge_write8(hw, B2_TI_CTRL, TIM_CLR_IRQ);
3359 skge_write8(hw, B0_LED, LED_STAT_ON);
3360
3361 /* enable the Tx Arbiters */
3362 for (i = 0; i < hw->ports; i++)
3363 skge_write8(hw, SK_REG(i, TXA_CTRL), TXA_ENA_ARB);
3364
3365 /* Initialize ram interface */
3366 skge_write16(hw, B3_RI_CTRL, RI_RST_CLR);
3367
3368 skge_write8(hw, B3_RI_WTO_R1, SK_RI_TO_53);
3369 skge_write8(hw, B3_RI_WTO_XA1, SK_RI_TO_53);
3370 skge_write8(hw, B3_RI_WTO_XS1, SK_RI_TO_53);
3371 skge_write8(hw, B3_RI_RTO_R1, SK_RI_TO_53);
3372 skge_write8(hw, B3_RI_RTO_XA1, SK_RI_TO_53);
3373 skge_write8(hw, B3_RI_RTO_XS1, SK_RI_TO_53);
3374 skge_write8(hw, B3_RI_WTO_R2, SK_RI_TO_53);
3375 skge_write8(hw, B3_RI_WTO_XA2, SK_RI_TO_53);
3376 skge_write8(hw, B3_RI_WTO_XS2, SK_RI_TO_53);
3377 skge_write8(hw, B3_RI_RTO_R2, SK_RI_TO_53);
3378 skge_write8(hw, B3_RI_RTO_XA2, SK_RI_TO_53);
3379 skge_write8(hw, B3_RI_RTO_XS2, SK_RI_TO_53);
3380
3381 skge_write32(hw, B0_HWE_IMSK, IS_ERR_MSK);
3382
3383 /* Set interrupt moderation for Transmit only
3384 * Receive interrupts avoided by NAPI
3385 */
3386 skge_write32(hw, B2_IRQM_MSK, IS_XA1_F|IS_XA2_F);
3387 skge_write32(hw, B2_IRQM_INI, skge_usecs2clk(hw, 100));
3388 skge_write32(hw, B2_IRQM_CTRL, TIM_START);
3389
3390 skge_write32(hw, B0_IMSK, hw->intr_mask);
3391
3392 mutex_lock(&hw->phy_mutex);
3393 for (i = 0; i < hw->ports; i++) {
3394 if (hw->chip_id == CHIP_ID_GENESIS)
3395 genesis_reset(hw, i);
3396 else
3397 yukon_reset(hw, i);
3398 }
3399 mutex_unlock(&hw->phy_mutex);
3400
3401 return 0;
3402 }
3403
3404 /* Initialize network device */
3405 static struct net_device *skge_devinit(struct skge_hw *hw, int port,
3406 int highmem)
3407 {
3408 struct skge_port *skge;
3409 struct net_device *dev = alloc_etherdev(sizeof(*skge));
3410
3411 if (!dev) {
3412 printk(KERN_ERR "skge etherdev alloc failed");
3413 return NULL;
3414 }
3415
3416 SET_MODULE_OWNER(dev);
3417 SET_NETDEV_DEV(dev, &hw->pdev->dev);
3418 dev->open = skge_up;
3419 dev->stop = skge_down;
3420 dev->do_ioctl = skge_ioctl;
3421 dev->hard_start_xmit = skge_xmit_frame;
3422 dev->get_stats = skge_get_stats;
3423 if (hw->chip_id == CHIP_ID_GENESIS)
3424 dev->set_multicast_list = genesis_set_multicast;
3425 else
3426 dev->set_multicast_list = yukon_set_multicast;
3427
3428 dev->set_mac_address = skge_set_mac_address;
3429 dev->change_mtu = skge_change_mtu;
3430 SET_ETHTOOL_OPS(dev, &skge_ethtool_ops);
3431 dev->tx_timeout = skge_tx_timeout;
3432 dev->watchdog_timeo = TX_WATCHDOG;
3433 dev->poll = skge_poll;
3434 dev->weight = NAPI_WEIGHT;
3435 #ifdef CONFIG_NET_POLL_CONTROLLER
3436 dev->poll_controller = skge_netpoll;
3437 #endif
3438 dev->irq = hw->pdev->irq;
3439
3440 if (highmem)
3441 dev->features |= NETIF_F_HIGHDMA;
3442
3443 skge = netdev_priv(dev);
3444 skge->netdev = dev;
3445 skge->hw = hw;
3446 skge->msg_enable = netif_msg_init(debug, default_msg);
3447 skge->tx_ring.count = DEFAULT_TX_RING_SIZE;
3448 skge->rx_ring.count = DEFAULT_RX_RING_SIZE;
3449
3450 /* Auto speed and flow control */
3451 skge->autoneg = AUTONEG_ENABLE;
3452 skge->flow_control = FLOW_MODE_SYM_OR_REM;
3453 skge->duplex = -1;
3454 skge->speed = -1;
3455 skge->advertising = skge_supported_modes(hw);
3456
3457 hw->dev[port] = dev;
3458
3459 skge->port = port;
3460
3461 /* Only used for Genesis XMAC */
3462 INIT_DELAYED_WORK(&skge->link_thread, xm_link_timer);
3463
3464 if (hw->chip_id != CHIP_ID_GENESIS) {
3465 dev->features |= NETIF_F_IP_CSUM | NETIF_F_SG;
3466 skge->rx_csum = 1;
3467 }
3468
3469 /* read the mac address */
3470 memcpy_fromio(dev->dev_addr, hw->regs + B2_MAC_1 + port*8, ETH_ALEN);
3471 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
3472
3473 /* device is off until link detection */
3474 netif_carrier_off(dev);
3475 netif_stop_queue(dev);
3476
3477 return dev;
3478 }
3479
3480 static void __devinit skge_show_addr(struct net_device *dev)
3481 {
3482 const struct skge_port *skge = netdev_priv(dev);
3483
3484 if (netif_msg_probe(skge))
3485 printk(KERN_INFO PFX "%s: addr %02x:%02x:%02x:%02x:%02x:%02x\n",
3486 dev->name,
3487 dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
3488 dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);
3489 }
3490
3491 static int __devinit skge_probe(struct pci_dev *pdev,
3492 const struct pci_device_id *ent)
3493 {
3494 struct net_device *dev, *dev1;
3495 struct skge_hw *hw;
3496 int err, using_dac = 0;
3497
3498 err = pci_enable_device(pdev);
3499 if (err) {
3500 printk(KERN_ERR PFX "%s cannot enable PCI device\n",
3501 pci_name(pdev));
3502 goto err_out;
3503 }
3504
3505 err = pci_request_regions(pdev, DRV_NAME);
3506 if (err) {
3507 printk(KERN_ERR PFX "%s cannot obtain PCI resources\n",
3508 pci_name(pdev));
3509 goto err_out_disable_pdev;
3510 }
3511
3512 pci_set_master(pdev);
3513
3514 if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK)) {
3515 using_dac = 1;
3516 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
3517 } else if (!(err = pci_set_dma_mask(pdev, DMA_32BIT_MASK))) {
3518 using_dac = 0;
3519 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
3520 }
3521
3522 if (err) {
3523 printk(KERN_ERR PFX "%s no usable DMA configuration\n",
3524 pci_name(pdev));
3525 goto err_out_free_regions;
3526 }
3527
3528 #ifdef __BIG_ENDIAN
3529 /* byte swap descriptors in hardware */
3530 {
3531 u32 reg;
3532
3533 pci_read_config_dword(pdev, PCI_DEV_REG2, &reg);
3534 reg |= PCI_REV_DESC;
3535 pci_write_config_dword(pdev, PCI_DEV_REG2, reg);
3536 }
3537 #endif
3538
3539 err = -ENOMEM;
3540 hw = kzalloc(sizeof(*hw), GFP_KERNEL);
3541 if (!hw) {
3542 printk(KERN_ERR PFX "%s: cannot allocate hardware struct\n",
3543 pci_name(pdev));
3544 goto err_out_free_regions;
3545 }
3546
3547 hw->pdev = pdev;
3548 mutex_init(&hw->phy_mutex);
3549 INIT_WORK(&hw->phy_work, skge_extirq);
3550 spin_lock_init(&hw->hw_lock);
3551
3552 hw->regs = ioremap_nocache(pci_resource_start(pdev, 0), 0x4000);
3553 if (!hw->regs) {
3554 printk(KERN_ERR PFX "%s: cannot map device registers\n",
3555 pci_name(pdev));
3556 goto err_out_free_hw;
3557 }
3558
3559 err = skge_reset(hw);
3560 if (err)
3561 goto err_out_iounmap;
3562
3563 printk(KERN_INFO PFX DRV_VERSION " addr 0x%llx irq %d chip %s rev %d\n",
3564 (unsigned long long)pci_resource_start(pdev, 0), pdev->irq,
3565 skge_board_name(hw), hw->chip_rev);
3566
3567 dev = skge_devinit(hw, 0, using_dac);
3568 if (!dev)
3569 goto err_out_led_off;
3570
3571 if (!is_valid_ether_addr(dev->dev_addr)) {
3572 printk(KERN_ERR PFX "%s: bad (zero?) ethernet address in rom\n",
3573 pci_name(pdev));
3574 err = -EIO;
3575 goto err_out_free_netdev;
3576 }
3577
3578 err = register_netdev(dev);
3579 if (err) {
3580 printk(KERN_ERR PFX "%s: cannot register net device\n",
3581 pci_name(pdev));
3582 goto err_out_free_netdev;
3583 }
3584
3585 err = request_irq(pdev->irq, skge_intr, IRQF_SHARED, dev->name, hw);
3586 if (err) {
3587 printk(KERN_ERR PFX "%s: cannot assign irq %d\n",
3588 dev->name, pdev->irq);
3589 goto err_out_unregister;
3590 }
3591 skge_show_addr(dev);
3592
3593 if (hw->ports > 1 && (dev1 = skge_devinit(hw, 1, using_dac))) {
3594 if (register_netdev(dev1) == 0)
3595 skge_show_addr(dev1);
3596 else {
3597 /* Failure to register second port need not be fatal */
3598 printk(KERN_WARNING PFX "register of second port failed\n");
3599 hw->dev[1] = NULL;
3600 free_netdev(dev1);
3601 }
3602 }
3603 pci_set_drvdata(pdev, hw);
3604
3605 return 0;
3606
3607 err_out_unregister:
3608 unregister_netdev(dev);
3609 err_out_free_netdev:
3610 free_netdev(dev);
3611 err_out_led_off:
3612 skge_write16(hw, B0_LED, LED_STAT_OFF);
3613 err_out_iounmap:
3614 iounmap(hw->regs);
3615 err_out_free_hw:
3616 kfree(hw);
3617 err_out_free_regions:
3618 pci_release_regions(pdev);
3619 err_out_disable_pdev:
3620 pci_disable_device(pdev);
3621 pci_set_drvdata(pdev, NULL);
3622 err_out:
3623 return err;
3624 }
3625
3626 static void __devexit skge_remove(struct pci_dev *pdev)
3627 {
3628 struct skge_hw *hw = pci_get_drvdata(pdev);
3629 struct net_device *dev0, *dev1;
3630
3631 if (!hw)
3632 return;
3633
3634 if ((dev1 = hw->dev[1]))
3635 unregister_netdev(dev1);
3636 dev0 = hw->dev[0];
3637 unregister_netdev(dev0);
3638
3639 spin_lock_irq(&hw->hw_lock);
3640 hw->intr_mask = 0;
3641 skge_write32(hw, B0_IMSK, 0);
3642 skge_read32(hw, B0_IMSK);
3643 spin_unlock_irq(&hw->hw_lock);
3644
3645 skge_write16(hw, B0_LED, LED_STAT_OFF);
3646 skge_write8(hw, B0_CTST, CS_RST_SET);
3647
3648 flush_scheduled_work();
3649
3650 free_irq(pdev->irq, hw);
3651 pci_release_regions(pdev);
3652 pci_disable_device(pdev);
3653 if (dev1)
3654 free_netdev(dev1);
3655 free_netdev(dev0);
3656
3657 iounmap(hw->regs);
3658 kfree(hw);
3659 pci_set_drvdata(pdev, NULL);
3660 }
3661
3662 #ifdef CONFIG_PM
3663 static int skge_suspend(struct pci_dev *pdev, pm_message_t state)
3664 {
3665 struct skge_hw *hw = pci_get_drvdata(pdev);
3666 int i, wol = 0;
3667
3668 pci_save_state(pdev);
3669 for (i = 0; i < hw->ports; i++) {
3670 struct net_device *dev = hw->dev[i];
3671
3672 if (netif_running(dev)) {
3673 struct skge_port *skge = netdev_priv(dev);
3674
3675 netif_carrier_off(dev);
3676 if (skge->wol)
3677 netif_stop_queue(dev);
3678 else
3679 skge_down(dev);
3680 wol |= skge->wol;
3681 }
3682 netif_device_detach(dev);
3683 }
3684
3685 skge_write32(hw, B0_IMSK, 0);
3686 pci_enable_wake(pdev, pci_choose_state(pdev, state), wol);
3687 pci_set_power_state(pdev, pci_choose_state(pdev, state));
3688
3689 return 0;
3690 }
3691
3692 static int skge_resume(struct pci_dev *pdev)
3693 {
3694 struct skge_hw *hw = pci_get_drvdata(pdev);
3695 int i, err;
3696
3697 pci_set_power_state(pdev, PCI_D0);
3698 pci_restore_state(pdev);
3699 pci_enable_wake(pdev, PCI_D0, 0);
3700
3701 err = skge_reset(hw);
3702 if (err)
3703 goto out;
3704
3705 for (i = 0; i < hw->ports; i++) {
3706 struct net_device *dev = hw->dev[i];
3707
3708 netif_device_attach(dev);
3709 if (netif_running(dev)) {
3710 err = skge_up(dev);
3711
3712 if (err) {
3713 printk(KERN_ERR PFX "%s: could not up: %d\n",
3714 dev->name, err);
3715 dev_close(dev);
3716 goto out;
3717 }
3718 }
3719 }
3720 out:
3721 return err;
3722 }
3723 #endif
3724
3725 static struct pci_driver skge_driver = {
3726 .name = DRV_NAME,
3727 .id_table = skge_id_table,
3728 .probe = skge_probe,
3729 .remove = __devexit_p(skge_remove),
3730 #ifdef CONFIG_PM
3731 .suspend = skge_suspend,
3732 .resume = skge_resume,
3733 #endif
3734 };
3735
3736 static int __init skge_init_module(void)
3737 {
3738 return pci_register_driver(&skge_driver);
3739 }
3740
3741 static void __exit skge_cleanup_module(void)
3742 {
3743 pci_unregister_driver(&skge_driver);
3744 }
3745
3746 module_init(skge_init_module);
3747 module_exit(skge_cleanup_module);
Linux with added FPC-III support