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rcv reorder queue bugfix
[cor_2_6_31.git] / drivers / net / skge.c
blob543af2044f40df39eea68d5eef6608dc1847613a
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/debugfs.h>
40 #include <linux/seq_file.h>
41 #include <linux/mii.h>
42 #include <asm/irq.h>
43
44 #include "skge.h"
45
46 #define DRV_NAME "skge"
47 #define DRV_VERSION "1.13"
48 #define PFX DRV_NAME " "
49
50 #define DEFAULT_TX_RING_SIZE 128
51 #define DEFAULT_RX_RING_SIZE 512
52 #define MAX_TX_RING_SIZE 1024
53 #define TX_LOW_WATER (MAX_SKB_FRAGS + 1)
54 #define MAX_RX_RING_SIZE 4096
55 #define RX_COPY_THRESHOLD 128
56 #define RX_BUF_SIZE 1536
57 #define PHY_RETRIES 1000
58 #define ETH_JUMBO_MTU 9000
59 #define TX_WATCHDOG (5 * HZ)
60 #define NAPI_WEIGHT 64
61 #define BLINK_MS 250
62 #define LINK_HZ HZ
63
64 #define SKGE_EEPROM_MAGIC 0x9933aabb
65
66
67 MODULE_DESCRIPTION("SysKonnect Gigabit Ethernet driver");
68 MODULE_AUTHOR("Stephen Hemminger <shemminger@linux-foundation.org>");
69 MODULE_LICENSE("GPL");
70 MODULE_VERSION(DRV_VERSION);
71
72 static const u32 default_msg
73 = NETIF_MSG_DRV| NETIF_MSG_PROBE| NETIF_MSG_LINK
74 | NETIF_MSG_IFUP| NETIF_MSG_IFDOWN;
75
76 static int debug = -1; /* defaults above */
77 module_param(debug, int, 0);
78 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
79
80 static const struct pci_device_id skge_id_table[] = {
81 { PCI_DEVICE(PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3C940) },
82 { PCI_DEVICE(PCI_VENDOR_ID_3COM, PCI_DEVICE_ID_3COM_3C940B) },
83 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, PCI_DEVICE_ID_SYSKONNECT_GE) },
84 { PCI_DEVICE(PCI_VENDOR_ID_SYSKONNECT, PCI_DEVICE_ID_SYSKONNECT_YU) },
85 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, PCI_DEVICE_ID_DLINK_DGE510T) },
86 { PCI_DEVICE(PCI_VENDOR_ID_DLINK, 0x4b01) }, /* DGE-530T */
87 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x4320) },
88 { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x5005) }, /* Belkin */
89 { PCI_DEVICE(PCI_VENDOR_ID_CNET, PCI_DEVICE_ID_CNET_GIGACARD) },
90 { PCI_DEVICE(PCI_VENDOR_ID_LINKSYS, PCI_DEVICE_ID_LINKSYS_EG1064) },
91 { PCI_VENDOR_ID_LINKSYS, 0x1032, PCI_ANY_ID, 0x0015 },
92 { 0 }
93 };
94 MODULE_DEVICE_TABLE(pci, skge_id_table);
95
96 static int skge_up(struct net_device *dev);
97 static int skge_down(struct net_device *dev);
98 static void skge_phy_reset(struct skge_port *skge);
99 static void skge_tx_clean(struct net_device *dev);
100 static int xm_phy_write(struct skge_hw *hw, int port, u16 reg, u16 val);
101 static int gm_phy_write(struct skge_hw *hw, int port, u16 reg, u16 val);
102 static void genesis_get_stats(struct skge_port *skge, u64 *data);
103 static void yukon_get_stats(struct skge_port *skge, u64 *data);
104 static void yukon_init(struct skge_hw *hw, int port);
105 static void genesis_mac_init(struct skge_hw *hw, int port);
106 static void genesis_link_up(struct skge_port *skge);
107 static void skge_set_multicast(struct net_device *dev);
108
109 /* Avoid conditionals by using array */
110 static const int txqaddr[] = { Q_XA1, Q_XA2 };
111 static const int rxqaddr[] = { Q_R1, Q_R2 };
112 static const u32 rxirqmask[] = { IS_R1_F, IS_R2_F };
113 static const u32 txirqmask[] = { IS_XA1_F, IS_XA2_F };
114 static const u32 napimask[] = { IS_R1_F|IS_XA1_F, IS_R2_F|IS_XA2_F };
115 static const u32 portmask[] = { IS_PORT_1, IS_PORT_2 };
116
117 static int skge_get_regs_len(struct net_device *dev)
118 {
119 return 0x4000;
120 }
121
122 /*
123 * Returns copy of whole control register region
124 * Note: skip RAM address register because accessing it will
125 * cause bus hangs!
126 */
127 static void skge_get_regs(struct net_device *dev, struct ethtool_regs *regs,
128 void *p)
129 {
130 const struct skge_port *skge = netdev_priv(dev);
131 const void __iomem *io = skge->hw->regs;
132
133 regs->version = 1;
134 memset(p, 0, regs->len);
135 memcpy_fromio(p, io, B3_RAM_ADDR);
136
137 memcpy_fromio(p + B3_RI_WTO_R1, io + B3_RI_WTO_R1,
138 regs->len - B3_RI_WTO_R1);
139 }
140
141 /* Wake on Lan only supported on Yukon chips with rev 1 or above */
142 static u32 wol_supported(const struct skge_hw *hw)
143 {
144 if (hw->chip_id == CHIP_ID_GENESIS)
145 return 0;
146
147 if (hw->chip_id == CHIP_ID_YUKON && hw->chip_rev == 0)
148 return 0;
149
150 return WAKE_MAGIC | WAKE_PHY;
151 }
152
153 static void skge_wol_init(struct skge_port *skge)
154 {
155 struct skge_hw *hw = skge->hw;
156 int port = skge->port;
157 u16 ctrl;
158
159 skge_write16(hw, B0_CTST, CS_RST_CLR);
160 skge_write16(hw, SK_REG(port, GMAC_LINK_CTRL), GMLC_RST_CLR);
161
162 /* Turn on Vaux */
163 skge_write8(hw, B0_POWER_CTRL,
164 PC_VAUX_ENA | PC_VCC_ENA | PC_VAUX_ON | PC_VCC_OFF);
165
166 /* WA code for COMA mode -- clear PHY reset */
167 if (hw->chip_id == CHIP_ID_YUKON_LITE &&
168 hw->chip_rev >= CHIP_REV_YU_LITE_A3) {
169 u32 reg = skge_read32(hw, B2_GP_IO);
170 reg |= GP_DIR_9;
171 reg &= ~GP_IO_9;
172 skge_write32(hw, B2_GP_IO, reg);
173 }
174
175 skge_write32(hw, SK_REG(port, GPHY_CTRL),
176 GPC_DIS_SLEEP |
177 GPC_HWCFG_M_3 | GPC_HWCFG_M_2 | GPC_HWCFG_M_1 | GPC_HWCFG_M_0 |
178 GPC_ANEG_1 | GPC_RST_SET);
179
180 skge_write32(hw, SK_REG(port, GPHY_CTRL),
181 GPC_DIS_SLEEP |
182 GPC_HWCFG_M_3 | GPC_HWCFG_M_2 | GPC_HWCFG_M_1 | GPC_HWCFG_M_0 |
183 GPC_ANEG_1 | GPC_RST_CLR);
184
185 skge_write32(hw, SK_REG(port, GMAC_CTRL), GMC_RST_CLR);
186
187 /* Force to 10/100 skge_reset will re-enable on resume */
188 gm_phy_write(hw, port, PHY_MARV_AUNE_ADV,
189 PHY_AN_100FULL | PHY_AN_100HALF |
190 PHY_AN_10FULL | PHY_AN_10HALF| PHY_AN_CSMA);
191 /* no 1000 HD/FD */
192 gm_phy_write(hw, port, PHY_MARV_1000T_CTRL, 0);
193 gm_phy_write(hw, port, PHY_MARV_CTRL,
194 PHY_CT_RESET | PHY_CT_SPS_LSB | PHY_CT_ANE |
195 PHY_CT_RE_CFG | PHY_CT_DUP_MD);
196
197
198 /* Set GMAC to no flow control and auto update for speed/duplex */
199 gma_write16(hw, port, GM_GP_CTRL,
200 GM_GPCR_FC_TX_DIS|GM_GPCR_TX_ENA|GM_GPCR_RX_ENA|
201 GM_GPCR_DUP_FULL|GM_GPCR_FC_RX_DIS|GM_GPCR_AU_FCT_DIS);
202
203 /* Set WOL address */
204 memcpy_toio(hw->regs + WOL_REGS(port, WOL_MAC_ADDR),
205 skge->netdev->dev_addr, ETH_ALEN);
206
207 /* Turn on appropriate WOL control bits */
208 skge_write16(hw, WOL_REGS(port, WOL_CTRL_STAT), WOL_CTL_CLEAR_RESULT);
209 ctrl = 0;
210 if (skge->wol & WAKE_PHY)
211 ctrl |= WOL_CTL_ENA_PME_ON_LINK_CHG|WOL_CTL_ENA_LINK_CHG_UNIT;
212 else
213 ctrl |= WOL_CTL_DIS_PME_ON_LINK_CHG|WOL_CTL_DIS_LINK_CHG_UNIT;
214
215 if (skge->wol & WAKE_MAGIC)
216 ctrl |= WOL_CTL_ENA_PME_ON_MAGIC_PKT|WOL_CTL_ENA_MAGIC_PKT_UNIT;
217 else
218 ctrl |= WOL_CTL_DIS_PME_ON_MAGIC_PKT|WOL_CTL_DIS_MAGIC_PKT_UNIT;;
219
220 ctrl |= WOL_CTL_DIS_PME_ON_PATTERN|WOL_CTL_DIS_PATTERN_UNIT;
221 skge_write16(hw, WOL_REGS(port, WOL_CTRL_STAT), ctrl);
222
223 /* block receiver */
224 skge_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
225 }
226
227 static void skge_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
228 {
229 struct skge_port *skge = netdev_priv(dev);
230
231 wol->supported = wol_supported(skge->hw);
232 wol->wolopts = skge->wol;
233 }
234
235 static int skge_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
236 {
237 struct skge_port *skge = netdev_priv(dev);
238 struct skge_hw *hw = skge->hw;
239
240 if ((wol->wolopts & ~wol_supported(hw))
241 || !device_can_wakeup(&hw->pdev->dev))
242 return -EOPNOTSUPP;
243
244 skge->wol = wol->wolopts;
245
246 device_set_wakeup_enable(&hw->pdev->dev, skge->wol);
247
248 return 0;
249 }
250
251 /* Determine supported/advertised modes based on hardware.
252 * Note: ethtool ADVERTISED_xxx == SUPPORTED_xxx
253 */
254 static u32 skge_supported_modes(const struct skge_hw *hw)
255 {
256 u32 supported;
257
258 if (hw->copper) {
259 supported = SUPPORTED_10baseT_Half
260 | SUPPORTED_10baseT_Full
261 | SUPPORTED_100baseT_Half
262 | SUPPORTED_100baseT_Full
263 | SUPPORTED_1000baseT_Half
264 | SUPPORTED_1000baseT_Full
265 | SUPPORTED_Autoneg| SUPPORTED_TP;
266
267 if (hw->chip_id == CHIP_ID_GENESIS)
268 supported &= ~(SUPPORTED_10baseT_Half
269 | SUPPORTED_10baseT_Full
270 | SUPPORTED_100baseT_Half
271 | SUPPORTED_100baseT_Full);
272
273 else if (hw->chip_id == CHIP_ID_YUKON)
274 supported &= ~SUPPORTED_1000baseT_Half;
275 } else
276 supported = SUPPORTED_1000baseT_Full | SUPPORTED_1000baseT_Half
277 | SUPPORTED_FIBRE | SUPPORTED_Autoneg;
278
279 return supported;
280 }
281
282 static int skge_get_settings(struct net_device *dev,
283 struct ethtool_cmd *ecmd)
284 {
285 struct skge_port *skge = netdev_priv(dev);
286 struct skge_hw *hw = skge->hw;
287
288 ecmd->transceiver = XCVR_INTERNAL;
289 ecmd->supported = skge_supported_modes(hw);
290
291 if (hw->copper) {
292 ecmd->port = PORT_TP;
293 ecmd->phy_address = hw->phy_addr;
294 } else
295 ecmd->port = PORT_FIBRE;
296
297 ecmd->advertising = skge->advertising;
298 ecmd->autoneg = skge->autoneg;
299 ecmd->speed = skge->speed;
300 ecmd->duplex = skge->duplex;
301 return 0;
302 }
303
304 static int skge_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
305 {
306 struct skge_port *skge = netdev_priv(dev);
307 const struct skge_hw *hw = skge->hw;
308 u32 supported = skge_supported_modes(hw);
309 int err = 0;
310
311 if (ecmd->autoneg == AUTONEG_ENABLE) {
312 ecmd->advertising = supported;
313 skge->duplex = -1;
314 skge->speed = -1;
315 } else {
316 u32 setting;
317
318 switch (ecmd->speed) {
319 case SPEED_1000:
320 if (ecmd->duplex == DUPLEX_FULL)
321 setting = SUPPORTED_1000baseT_Full;
322 else if (ecmd->duplex == DUPLEX_HALF)
323 setting = SUPPORTED_1000baseT_Half;
324 else
325 return -EINVAL;
326 break;
327 case SPEED_100:
328 if (ecmd->duplex == DUPLEX_FULL)
329 setting = SUPPORTED_100baseT_Full;
330 else if (ecmd->duplex == DUPLEX_HALF)
331 setting = SUPPORTED_100baseT_Half;
332 else
333 return -EINVAL;
334 break;
335
336 case SPEED_10:
337 if (ecmd->duplex == DUPLEX_FULL)
338 setting = SUPPORTED_10baseT_Full;
339 else if (ecmd->duplex == DUPLEX_HALF)
340 setting = SUPPORTED_10baseT_Half;
341 else
342 return -EINVAL;
343 break;
344 default:
345 return -EINVAL;
346 }
347
348 if ((setting & supported) == 0)
349 return -EINVAL;
350
351 skge->speed = ecmd->speed;
352 skge->duplex = ecmd->duplex;
353 }
354
355 skge->autoneg = ecmd->autoneg;
356 skge->advertising = ecmd->advertising;
357
358 if (netif_running(dev)) {
359 skge_down(dev);
360 err = skge_up(dev);
361 if (err) {
362 dev_close(dev);
363 return err;
364 }
365 }
366
367 return (0);
368 }
369
370 static void skge_get_drvinfo(struct net_device *dev,
371 struct ethtool_drvinfo *info)
372 {
373 struct skge_port *skge = netdev_priv(dev);
374
375 strcpy(info->driver, DRV_NAME);
376 strcpy(info->version, DRV_VERSION);
377 strcpy(info->fw_version, "N/A");
378 strcpy(info->bus_info, pci_name(skge->hw->pdev));
379 }
380
381 static const struct skge_stat {
382 char name[ETH_GSTRING_LEN];
383 u16 xmac_offset;
384 u16 gma_offset;
385 } skge_stats[] = {
386 { "tx_bytes", XM_TXO_OK_HI, GM_TXO_OK_HI },
387 { "rx_bytes", XM_RXO_OK_HI, GM_RXO_OK_HI },
388
389 { "tx_broadcast", XM_TXF_BC_OK, GM_TXF_BC_OK },
390 { "rx_broadcast", XM_RXF_BC_OK, GM_RXF_BC_OK },
391 { "tx_multicast", XM_TXF_MC_OK, GM_TXF_MC_OK },
392 { "rx_multicast", XM_RXF_MC_OK, GM_RXF_MC_OK },
393 { "tx_unicast", XM_TXF_UC_OK, GM_TXF_UC_OK },
394 { "rx_unicast", XM_RXF_UC_OK, GM_RXF_UC_OK },
395 { "tx_mac_pause", XM_TXF_MPAUSE, GM_TXF_MPAUSE },
396 { "rx_mac_pause", XM_RXF_MPAUSE, GM_RXF_MPAUSE },
397
398 { "collisions", XM_TXF_SNG_COL, GM_TXF_SNG_COL },
399 { "multi_collisions", XM_TXF_MUL_COL, GM_TXF_MUL_COL },
400 { "aborted", XM_TXF_ABO_COL, GM_TXF_ABO_COL },
401 { "late_collision", XM_TXF_LAT_COL, GM_TXF_LAT_COL },
402 { "fifo_underrun", XM_TXE_FIFO_UR, GM_TXE_FIFO_UR },
403 { "fifo_overflow", XM_RXE_FIFO_OV, GM_RXE_FIFO_OV },
404
405 { "rx_toolong", XM_RXF_LNG_ERR, GM_RXF_LNG_ERR },
406 { "rx_jabber", XM_RXF_JAB_PKT, GM_RXF_JAB_PKT },
407 { "rx_runt", XM_RXE_RUNT, GM_RXE_FRAG },
408 { "rx_too_long", XM_RXF_LNG_ERR, GM_RXF_LNG_ERR },
409 { "rx_fcs_error", XM_RXF_FCS_ERR, GM_RXF_FCS_ERR },
410 };
411
412 static int skge_get_sset_count(struct net_device *dev, int sset)
413 {
414 switch (sset) {
415 case ETH_SS_STATS:
416 return ARRAY_SIZE(skge_stats);
417 default:
418 return -EOPNOTSUPP;
419 }
420 }
421
422 static void skge_get_ethtool_stats(struct net_device *dev,
423 struct ethtool_stats *stats, u64 *data)
424 {
425 struct skge_port *skge = netdev_priv(dev);
426
427 if (skge->hw->chip_id == CHIP_ID_GENESIS)
428 genesis_get_stats(skge, data);
429 else
430 yukon_get_stats(skge, data);
431 }
432
433 /* Use hardware MIB variables for critical path statistics and
434 * transmit feedback not reported at interrupt.
435 * Other errors are accounted for in interrupt handler.
436 */
437 static struct net_device_stats *skge_get_stats(struct net_device *dev)
438 {
439 struct skge_port *skge = netdev_priv(dev);
440 u64 data[ARRAY_SIZE(skge_stats)];
441
442 if (skge->hw->chip_id == CHIP_ID_GENESIS)
443 genesis_get_stats(skge, data);
444 else
445 yukon_get_stats(skge, data);
446
447 dev->stats.tx_bytes = data[0];
448 dev->stats.rx_bytes = data[1];
449 dev->stats.tx_packets = data[2] + data[4] + data[6];
450 dev->stats.rx_packets = data[3] + data[5] + data[7];
451 dev->stats.multicast = data[3] + data[5];
452 dev->stats.collisions = data[10];
453 dev->stats.tx_aborted_errors = data[12];
454
455 return &dev->stats;
456 }
457
458 static void skge_get_strings(struct net_device *dev, u32 stringset, u8 *data)
459 {
460 int i;
461
462 switch (stringset) {
463 case ETH_SS_STATS:
464 for (i = 0; i < ARRAY_SIZE(skge_stats); i++)
465 memcpy(data + i * ETH_GSTRING_LEN,
466 skge_stats[i].name, ETH_GSTRING_LEN);
467 break;
468 }
469 }
470
471 static void skge_get_ring_param(struct net_device *dev,
472 struct ethtool_ringparam *p)
473 {
474 struct skge_port *skge = netdev_priv(dev);
475
476 p->rx_max_pending = MAX_RX_RING_SIZE;
477 p->tx_max_pending = MAX_TX_RING_SIZE;
478 p->rx_mini_max_pending = 0;
479 p->rx_jumbo_max_pending = 0;
480
481 p->rx_pending = skge->rx_ring.count;
482 p->tx_pending = skge->tx_ring.count;
483 p->rx_mini_pending = 0;
484 p->rx_jumbo_pending = 0;
485 }
486
487 static int skge_set_ring_param(struct net_device *dev,
488 struct ethtool_ringparam *p)
489 {
490 struct skge_port *skge = netdev_priv(dev);
491 int err = 0;
492
493 if (p->rx_pending == 0 || p->rx_pending > MAX_RX_RING_SIZE ||
494 p->tx_pending < TX_LOW_WATER || p->tx_pending > MAX_TX_RING_SIZE)
495 return -EINVAL;
496
497 skge->rx_ring.count = p->rx_pending;
498 skge->tx_ring.count = p->tx_pending;
499
500 if (netif_running(dev)) {
501 skge_down(dev);
502 err = skge_up(dev);
503 if (err)
504 dev_close(dev);
505 }
506
507 return err;
508 }
509
510 static u32 skge_get_msglevel(struct net_device *netdev)
511 {
512 struct skge_port *skge = netdev_priv(netdev);
513 return skge->msg_enable;
514 }
515
516 static void skge_set_msglevel(struct net_device *netdev, u32 value)
517 {
518 struct skge_port *skge = netdev_priv(netdev);
519 skge->msg_enable = value;
520 }
521
522 static int skge_nway_reset(struct net_device *dev)
523 {
524 struct skge_port *skge = netdev_priv(dev);
525
526 if (skge->autoneg != AUTONEG_ENABLE || !netif_running(dev))
527 return -EINVAL;
528
529 skge_phy_reset(skge);
530 return 0;
531 }
532
533 static int skge_set_sg(struct net_device *dev, u32 data)
534 {
535 struct skge_port *skge = netdev_priv(dev);
536 struct skge_hw *hw = skge->hw;
537
538 if (hw->chip_id == CHIP_ID_GENESIS && data)
539 return -EOPNOTSUPP;
540 return ethtool_op_set_sg(dev, data);
541 }
542
543 static int skge_set_tx_csum(struct net_device *dev, u32 data)
544 {
545 struct skge_port *skge = netdev_priv(dev);
546 struct skge_hw *hw = skge->hw;
547
548 if (hw->chip_id == CHIP_ID_GENESIS && data)
549 return -EOPNOTSUPP;
550
551 return ethtool_op_set_tx_csum(dev, data);
552 }
553
554 static u32 skge_get_rx_csum(struct net_device *dev)
555 {
556 struct skge_port *skge = netdev_priv(dev);
557
558 return skge->rx_csum;
559 }
560
561 /* Only Yukon supports checksum offload. */
562 static int skge_set_rx_csum(struct net_device *dev, u32 data)
563 {
564 struct skge_port *skge = netdev_priv(dev);
565
566 if (skge->hw->chip_id == CHIP_ID_GENESIS && data)
567 return -EOPNOTSUPP;
568
569 skge->rx_csum = data;
570 return 0;
571 }
572
573 static void skge_get_pauseparam(struct net_device *dev,
574 struct ethtool_pauseparam *ecmd)
575 {
576 struct skge_port *skge = netdev_priv(dev);
577
578 ecmd->rx_pause = (skge->flow_control == FLOW_MODE_SYMMETRIC)
579 || (skge->flow_control == FLOW_MODE_SYM_OR_REM);
580 ecmd->tx_pause = ecmd->rx_pause || (skge->flow_control == FLOW_MODE_LOC_SEND);
581
582 ecmd->autoneg = ecmd->rx_pause || ecmd->tx_pause;
583 }
584
585 static int skge_set_pauseparam(struct net_device *dev,
586 struct ethtool_pauseparam *ecmd)
587 {
588 struct skge_port *skge = netdev_priv(dev);
589 struct ethtool_pauseparam old;
590 int err = 0;
591
592 skge_get_pauseparam(dev, &old);
593
594 if (ecmd->autoneg != old.autoneg)
595 skge->flow_control = ecmd->autoneg ? FLOW_MODE_NONE : FLOW_MODE_SYMMETRIC;
596 else {
597 if (ecmd->rx_pause && ecmd->tx_pause)
598 skge->flow_control = FLOW_MODE_SYMMETRIC;
599 else if (ecmd->rx_pause && !ecmd->tx_pause)
600 skge->flow_control = FLOW_MODE_SYM_OR_REM;
601 else if (!ecmd->rx_pause && ecmd->tx_pause)
602 skge->flow_control = FLOW_MODE_LOC_SEND;
603 else
604 skge->flow_control = FLOW_MODE_NONE;
605 }
606
607 if (netif_running(dev)) {
608 skge_down(dev);
609 err = skge_up(dev);
610 if (err) {
611 dev_close(dev);
612 return err;
613 }
614 }
615
616 return 0;
617 }
618
619 /* Chip internal frequency for clock calculations */
620 static inline u32 hwkhz(const struct skge_hw *hw)
621 {
622 return (hw->chip_id == CHIP_ID_GENESIS) ? 53125 : 78125;
623 }
624
625 /* Chip HZ to microseconds */
626 static inline u32 skge_clk2usec(const struct skge_hw *hw, u32 ticks)
627 {
628 return (ticks * 1000) / hwkhz(hw);
629 }
630
631 /* Microseconds to chip HZ */
632 static inline u32 skge_usecs2clk(const struct skge_hw *hw, u32 usec)
633 {
634 return hwkhz(hw) * usec / 1000;
635 }
636
637 static int skge_get_coalesce(struct net_device *dev,
638 struct ethtool_coalesce *ecmd)
639 {
640 struct skge_port *skge = netdev_priv(dev);
641 struct skge_hw *hw = skge->hw;
642 int port = skge->port;
643
644 ecmd->rx_coalesce_usecs = 0;
645 ecmd->tx_coalesce_usecs = 0;
646
647 if (skge_read32(hw, B2_IRQM_CTRL) & TIM_START) {
648 u32 delay = skge_clk2usec(hw, skge_read32(hw, B2_IRQM_INI));
649 u32 msk = skge_read32(hw, B2_IRQM_MSK);
650
651 if (msk & rxirqmask[port])
652 ecmd->rx_coalesce_usecs = delay;
653 if (msk & txirqmask[port])
654 ecmd->tx_coalesce_usecs = delay;
655 }
656
657 return 0;
658 }
659
660 /* Note: interrupt timer is per board, but can turn on/off per port */
661 static int skge_set_coalesce(struct net_device *dev,
662 struct ethtool_coalesce *ecmd)
663 {
664 struct skge_port *skge = netdev_priv(dev);
665 struct skge_hw *hw = skge->hw;
666 int port = skge->port;
667 u32 msk = skge_read32(hw, B2_IRQM_MSK);
668 u32 delay = 25;
669
670 if (ecmd->rx_coalesce_usecs == 0)
671 msk &= ~rxirqmask[port];
672 else if (ecmd->rx_coalesce_usecs < 25 ||
673 ecmd->rx_coalesce_usecs > 33333)
674 return -EINVAL;
675 else {
676 msk |= rxirqmask[port];
677 delay = ecmd->rx_coalesce_usecs;
678 }
679
680 if (ecmd->tx_coalesce_usecs == 0)
681 msk &= ~txirqmask[port];
682 else if (ecmd->tx_coalesce_usecs < 25 ||
683 ecmd->tx_coalesce_usecs > 33333)
684 return -EINVAL;
685 else {
686 msk |= txirqmask[port];
687 delay = min(delay, ecmd->rx_coalesce_usecs);
688 }
689
690 skge_write32(hw, B2_IRQM_MSK, msk);
691 if (msk == 0)
692 skge_write32(hw, B2_IRQM_CTRL, TIM_STOP);
693 else {
694 skge_write32(hw, B2_IRQM_INI, skge_usecs2clk(hw, delay));
695 skge_write32(hw, B2_IRQM_CTRL, TIM_START);
696 }
697 return 0;
698 }
699
700 enum led_mode { LED_MODE_OFF, LED_MODE_ON, LED_MODE_TST };
701 static void skge_led(struct skge_port *skge, enum led_mode mode)
702 {
703 struct skge_hw *hw = skge->hw;
704 int port = skge->port;
705
706 spin_lock_bh(&hw->phy_lock);
707 if (hw->chip_id == CHIP_ID_GENESIS) {
708 switch (mode) {
709 case LED_MODE_OFF:
710 if (hw->phy_type == SK_PHY_BCOM)
711 xm_phy_write(hw, port, PHY_BCOM_P_EXT_CTRL, PHY_B_PEC_LED_OFF);
712 else {
713 skge_write32(hw, SK_REG(port, TX_LED_VAL), 0);
714 skge_write8(hw, SK_REG(port, TX_LED_CTRL), LED_T_OFF);
715 }
716 skge_write8(hw, SK_REG(port, LNK_LED_REG), LINKLED_OFF);
717 skge_write32(hw, SK_REG(port, RX_LED_VAL), 0);
718 skge_write8(hw, SK_REG(port, RX_LED_CTRL), LED_T_OFF);
719 break;
720
721 case LED_MODE_ON:
722 skge_write8(hw, SK_REG(port, LNK_LED_REG), LINKLED_ON);
723 skge_write8(hw, SK_REG(port, LNK_LED_REG), LINKLED_LINKSYNC_ON);
724
725 skge_write8(hw, SK_REG(port, RX_LED_CTRL), LED_START);
726 skge_write8(hw, SK_REG(port, TX_LED_CTRL), LED_START);
727
728 break;
729
730 case LED_MODE_TST:
731 skge_write8(hw, SK_REG(port, RX_LED_TST), LED_T_ON);
732 skge_write32(hw, SK_REG(port, RX_LED_VAL), 100);
733 skge_write8(hw, SK_REG(port, RX_LED_CTRL), LED_START);
734
735 if (hw->phy_type == SK_PHY_BCOM)
736 xm_phy_write(hw, port, PHY_BCOM_P_EXT_CTRL, PHY_B_PEC_LED_ON);
737 else {
738 skge_write8(hw, SK_REG(port, TX_LED_TST), LED_T_ON);
739 skge_write32(hw, SK_REG(port, TX_LED_VAL), 100);
740 skge_write8(hw, SK_REG(port, TX_LED_CTRL), LED_START);
741 }
742
743 }
744 } else {
745 switch (mode) {
746 case LED_MODE_OFF:
747 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, 0);
748 gm_phy_write(hw, port, PHY_MARV_LED_OVER,
749 PHY_M_LED_MO_DUP(MO_LED_OFF) |
750 PHY_M_LED_MO_10(MO_LED_OFF) |
751 PHY_M_LED_MO_100(MO_LED_OFF) |
752 PHY_M_LED_MO_1000(MO_LED_OFF) |
753 PHY_M_LED_MO_RX(MO_LED_OFF));
754 break;
755 case LED_MODE_ON:
756 gm_phy_write(hw, port, PHY_MARV_LED_CTRL,
757 PHY_M_LED_PULS_DUR(PULS_170MS) |
758 PHY_M_LED_BLINK_RT(BLINK_84MS) |
759 PHY_M_LEDC_TX_CTRL |
760 PHY_M_LEDC_DP_CTRL);
761
762 gm_phy_write(hw, port, PHY_MARV_LED_OVER,
763 PHY_M_LED_MO_RX(MO_LED_OFF) |
764 (skge->speed == SPEED_100 ?
765 PHY_M_LED_MO_100(MO_LED_ON) : 0));
766 break;
767 case LED_MODE_TST:
768 gm_phy_write(hw, port, PHY_MARV_LED_CTRL, 0);
769 gm_phy_write(hw, port, PHY_MARV_LED_OVER,
770 PHY_M_LED_MO_DUP(MO_LED_ON) |
771 PHY_M_LED_MO_10(MO_LED_ON) |
772 PHY_M_LED_MO_100(MO_LED_ON) |
773 PHY_M_LED_MO_1000(MO_LED_ON) |
774 PHY_M_LED_MO_RX(MO_LED_ON));
775 }
776 }
777 spin_unlock_bh(&hw->phy_lock);
778 }
779
780 /* blink LED's for finding board */
781 static int skge_phys_id(struct net_device *dev, u32 data)
782 {
783 struct skge_port *skge = netdev_priv(dev);
784 unsigned long ms;
785 enum led_mode mode = LED_MODE_TST;
786
787 if (!data || data > (u32)(MAX_SCHEDULE_TIMEOUT / HZ))
788 ms = jiffies_to_msecs(MAX_SCHEDULE_TIMEOUT / HZ) * 1000;
789 else
790 ms = data * 1000;
791
792 while (ms > 0) {
793 skge_led(skge, mode);
794 mode ^= LED_MODE_TST;
795
796 if (msleep_interruptible(BLINK_MS))
797 break;
798 ms -= BLINK_MS;
799 }
800
801 /* back to regular LED state */
802 skge_led(skge, netif_running(dev) ? LED_MODE_ON : LED_MODE_OFF);
803
804 return 0;
805 }
806
807 static int skge_get_eeprom_len(struct net_device *dev)
808 {
809 struct skge_port *skge = netdev_priv(dev);
810 u32 reg2;
811
812 pci_read_config_dword(skge->hw->pdev, PCI_DEV_REG2, &reg2);
813 return 1 << ( ((reg2 & PCI_VPD_ROM_SZ) >> 14) + 8);
814 }
815
816 static u32 skge_vpd_read(struct pci_dev *pdev, int cap, u16 offset)
817 {
818 u32 val;
819
820 pci_write_config_word(pdev, cap + PCI_VPD_ADDR, offset);
821
822 do {
823 pci_read_config_word(pdev, cap + PCI_VPD_ADDR, &offset);
824 } while (!(offset & PCI_VPD_ADDR_F));
825
826 pci_read_config_dword(pdev, cap + PCI_VPD_DATA, &val);
827 return val;
828 }
829
830 static void skge_vpd_write(struct pci_dev *pdev, int cap, u16 offset, u32 val)
831 {
832 pci_write_config_dword(pdev, cap + PCI_VPD_DATA, val);
833 pci_write_config_word(pdev, cap + PCI_VPD_ADDR,
834 offset | PCI_VPD_ADDR_F);
835
836 do {
837 pci_read_config_word(pdev, cap + PCI_VPD_ADDR, &offset);
838 } while (offset & PCI_VPD_ADDR_F);
839 }
840
841 static int skge_get_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
842 u8 *data)
843 {
844 struct skge_port *skge = netdev_priv(dev);
845 struct pci_dev *pdev = skge->hw->pdev;
846 int cap = pci_find_capability(pdev, PCI_CAP_ID_VPD);
847 int length = eeprom->len;
848 u16 offset = eeprom->offset;
849
850 if (!cap)
851 return -EINVAL;
852
853 eeprom->magic = SKGE_EEPROM_MAGIC;
854
855 while (length > 0) {
856 u32 val = skge_vpd_read(pdev, cap, offset);
857 int n = min_t(int, length, sizeof(val));
858
859 memcpy(data, &val, n);
860 length -= n;
861 data += n;
862 offset += n;
863 }
864 return 0;
865 }
866
867 static int skge_set_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
868 u8 *data)
869 {
870 struct skge_port *skge = netdev_priv(dev);
871 struct pci_dev *pdev = skge->hw->pdev;
872 int cap = pci_find_capability(pdev, PCI_CAP_ID_VPD);
873 int length = eeprom->len;
874 u16 offset = eeprom->offset;
875
876 if (!cap)
877 return -EINVAL;
878
879 if (eeprom->magic != SKGE_EEPROM_MAGIC)
880 return -EINVAL;
881
882 while (length > 0) {
883 u32 val;
884 int n = min_t(int, length, sizeof(val));
885
886 if (n < sizeof(val))
887 val = skge_vpd_read(pdev, cap, offset);
888 memcpy(&val, data, n);
889
890 skge_vpd_write(pdev, cap, offset, val);
891
892 length -= n;
893 data += n;
894 offset += n;
895 }
896 return 0;
897 }
898
899 static const struct ethtool_ops skge_ethtool_ops = {
900 .get_settings = skge_get_settings,
901 .set_settings = skge_set_settings,
902 .get_drvinfo = skge_get_drvinfo,
903 .get_regs_len = skge_get_regs_len,
904 .get_regs = skge_get_regs,
905 .get_wol = skge_get_wol,
906 .set_wol = skge_set_wol,
907 .get_msglevel = skge_get_msglevel,
908 .set_msglevel = skge_set_msglevel,
909 .nway_reset = skge_nway_reset,
910 .get_link = ethtool_op_get_link,
911 .get_eeprom_len = skge_get_eeprom_len,
912 .get_eeprom = skge_get_eeprom,
913 .set_eeprom = skge_set_eeprom,
914 .get_ringparam = skge_get_ring_param,
915 .set_ringparam = skge_set_ring_param,
916 .get_pauseparam = skge_get_pauseparam,
917 .set_pauseparam = skge_set_pauseparam,
918 .get_coalesce = skge_get_coalesce,
919 .set_coalesce = skge_set_coalesce,
920 .set_sg = skge_set_sg,
921 .set_tx_csum = skge_set_tx_csum,
922 .get_rx_csum = skge_get_rx_csum,
923 .set_rx_csum = skge_set_rx_csum,
924 .get_strings = skge_get_strings,
925 .phys_id = skge_phys_id,
926 .get_sset_count = skge_get_sset_count,
927 .get_ethtool_stats = skge_get_ethtool_stats,
928 };
929
930 /*
931 * Allocate ring elements and chain them together
932 * One-to-one association of board descriptors with ring elements
933 */
934 static int skge_ring_alloc(struct skge_ring *ring, void *vaddr, u32 base)
935 {
936 struct skge_tx_desc *d;
937 struct skge_element *e;
938 int i;
939
940 ring->start = kcalloc(ring->count, sizeof(*e), GFP_KERNEL);
941 if (!ring->start)
942 return -ENOMEM;
943
944 for (i = 0, e = ring->start, d = vaddr; i < ring->count; i++, e++, d++) {
945 e->desc = d;
946 if (i == ring->count - 1) {
947 e->next = ring->start;
948 d->next_offset = base;
949 } else {
950 e->next = e + 1;
951 d->next_offset = base + (i+1) * sizeof(*d);
952 }
953 }
954 ring->to_use = ring->to_clean = ring->start;
955
956 return 0;
957 }
958
959 /* Allocate and setup a new buffer for receiving */
960 static void skge_rx_setup(struct skge_port *skge, struct skge_element *e,
961 struct sk_buff *skb, unsigned int bufsize)
962 {
963 struct skge_rx_desc *rd = e->desc;
964 u64 map;
965
966 map = pci_map_single(skge->hw->pdev, skb->data, bufsize,
967 PCI_DMA_FROMDEVICE);
968
969 rd->dma_lo = map;
970 rd->dma_hi = map >> 32;
971 e->skb = skb;
972 rd->csum1_start = ETH_HLEN;
973 rd->csum2_start = ETH_HLEN;
974 rd->csum1 = 0;
975 rd->csum2 = 0;
976
977 wmb();
978
979 rd->control = BMU_OWN | BMU_STF | BMU_IRQ_EOF | BMU_TCP_CHECK | bufsize;
980 pci_unmap_addr_set(e, mapaddr, map);
981 pci_unmap_len_set(e, maplen, bufsize);
982 }
983
984 /* Resume receiving using existing skb,
985 * Note: DMA address is not changed by chip.
986 * MTU not changed while receiver active.
987 */
988 static inline void skge_rx_reuse(struct skge_element *e, unsigned int size)
989 {
990 struct skge_rx_desc *rd = e->desc;
991
992 rd->csum2 = 0;
993 rd->csum2_start = ETH_HLEN;
994
995 wmb();
996
997 rd->control = BMU_OWN | BMU_STF | BMU_IRQ_EOF | BMU_TCP_CHECK | size;
998 }
999
1000
1001 /* Free all buffers in receive ring, assumes receiver stopped */
1002 static void skge_rx_clean(struct skge_port *skge)
1003 {
1004 struct skge_hw *hw = skge->hw;
1005 struct skge_ring *ring = &skge->rx_ring;
1006 struct skge_element *e;
1007
1008 e = ring->start;
1009 do {
1010 struct skge_rx_desc *rd = e->desc;
1011 rd->control = 0;
1012 if (e->skb) {
1013 pci_unmap_single(hw->pdev,
1014 pci_unmap_addr(e, mapaddr),
1015 pci_unmap_len(e, maplen),
1016 PCI_DMA_FROMDEVICE);
1017 dev_kfree_skb(e->skb);
1018 e->skb = NULL;
1019 }
1020 } while ((e = e->next) != ring->start);
1021 }
1022
1023
1024 /* Allocate buffers for receive ring
1025 * For receive: to_clean is next received frame.
1026 */
1027 static int skge_rx_fill(struct net_device *dev)
1028 {
1029 struct skge_port *skge = netdev_priv(dev);
1030 struct skge_ring *ring = &skge->rx_ring;
1031 struct skge_element *e;
1032
1033 e = ring->start;
1034 do {
1035 struct sk_buff *skb;
1036
1037 skb = __netdev_alloc_skb(dev, skge->rx_buf_size + NET_IP_ALIGN,
1038 GFP_KERNEL);
1039 if (!skb)
1040 return -ENOMEM;
1041
1042 skb_reserve(skb, NET_IP_ALIGN);
1043 skge_rx_setup(skge, e, skb, skge->rx_buf_size);
1044 } while ( (e = e->next) != ring->start);
1045
1046 ring->to_clean = ring->start;
1047 return 0;
1048 }
1049
1050 static const char *skge_pause(enum pause_status status)
1051 {
1052 switch(status) {
1053 case FLOW_STAT_NONE:
1054 return "none";
1055 case FLOW_STAT_REM_SEND:
1056 return "rx only";
1057 case FLOW_STAT_LOC_SEND:
1058 return "tx_only";
1059 case FLOW_STAT_SYMMETRIC: /* Both station may send PAUSE */
1060 return "both";
1061 default:
1062 return "indeterminated";
1063 }
1064 }
1065
1066
1067 static void skge_link_up(struct skge_port *skge)
1068 {
1069 skge_write8(skge->hw, SK_REG(skge->port, LNK_LED_REG),
1070 LED_BLK_OFF|LED_SYNC_OFF|LED_ON);
1071
1072 netif_carrier_on(skge->netdev);
1073 netif_wake_queue(skge->netdev);
1074
1075 if (netif_msg_link(skge)) {
1076 printk(KERN_INFO PFX
1077 "%s: Link is up at %d Mbps, %s duplex, flow control %s\n",
1078 skge->netdev->name, skge->speed,
1079 skge->duplex == DUPLEX_FULL ? "full" : "half",
1080 skge_pause(skge->flow_status));
1081 }
1082 }
1083
1084 static void skge_link_down(struct skge_port *skge)
1085 {
1086 skge_write8(skge->hw, SK_REG(skge->port, LNK_LED_REG), LED_OFF);
1087 netif_carrier_off(skge->netdev);
1088 netif_stop_queue(skge->netdev);
1089
1090 if (netif_msg_link(skge))
1091 printk(KERN_INFO PFX "%s: Link is down.\n", skge->netdev->name);
1092 }
1093
1094
1095 static void xm_link_down(struct skge_hw *hw, int port)
1096 {
1097 struct net_device *dev = hw->dev[port];
1098 struct skge_port *skge = netdev_priv(dev);
1099
1100 xm_write16(hw, port, XM_IMSK, XM_IMSK_DISABLE);
1101
1102 if (netif_carrier_ok(dev))
1103 skge_link_down(skge);
1104 }
1105
1106 static int __xm_phy_read(struct skge_hw *hw, int port, u16 reg, u16 *val)
1107 {
1108 int i;
1109
1110 xm_write16(hw, port, XM_PHY_ADDR, reg | hw->phy_addr);
1111 *val = xm_read16(hw, port, XM_PHY_DATA);
1112
1113 if (hw->phy_type == SK_PHY_XMAC)
1114 goto ready;
1115
1116 for (i = 0; i < PHY_RETRIES; i++) {
1117 if (xm_read16(hw, port, XM_MMU_CMD) & XM_MMU_PHY_RDY)
1118 goto ready;
1119 udelay(1);
1120 }
1121
1122 return -ETIMEDOUT;
1123 ready:
1124 *val = xm_read16(hw, port, XM_PHY_DATA);
1125
1126 return 0;
1127 }
1128
1129 static u16 xm_phy_read(struct skge_hw *hw, int port, u16 reg)
1130 {
1131 u16 v = 0;
1132 if (__xm_phy_read(hw, port, reg, &v))
1133 printk(KERN_WARNING PFX "%s: phy read timed out\n",
1134 hw->dev[port]->name);
1135 return v;
1136 }
1137
1138 static int xm_phy_write(struct skge_hw *hw, int port, u16 reg, u16 val)
1139 {
1140 int i;
1141
1142 xm_write16(hw, port, XM_PHY_ADDR, reg | hw->phy_addr);
1143 for (i = 0; i < PHY_RETRIES; i++) {
1144 if (!(xm_read16(hw, port, XM_MMU_CMD) & XM_MMU_PHY_BUSY))
1145 goto ready;
1146 udelay(1);
1147 }
1148 return -EIO;
1149
1150 ready:
1151 xm_write16(hw, port, XM_PHY_DATA, val);
1152 for (i = 0; i < PHY_RETRIES; i++) {
1153 if (!(xm_read16(hw, port, XM_MMU_CMD) & XM_MMU_PHY_BUSY))
1154 return 0;
1155 udelay(1);
1156 }
1157 return -ETIMEDOUT;
1158 }
1159
1160 static void genesis_init(struct skge_hw *hw)
1161 {
1162 /* set blink source counter */
1163 skge_write32(hw, B2_BSC_INI, (SK_BLK_DUR * SK_FACT_53) / 100);
1164 skge_write8(hw, B2_BSC_CTRL, BSC_START);
1165
1166 /* configure mac arbiter */
1167 skge_write16(hw, B3_MA_TO_CTRL, MA_RST_CLR);
1168
1169 /* configure mac arbiter timeout values */
1170 skge_write8(hw, B3_MA_TOINI_RX1, SK_MAC_TO_53);
1171 skge_write8(hw, B3_MA_TOINI_RX2, SK_MAC_TO_53);
1172 skge_write8(hw, B3_MA_TOINI_TX1, SK_MAC_TO_53);
1173 skge_write8(hw, B3_MA_TOINI_TX2, SK_MAC_TO_53);
1174
1175 skge_write8(hw, B3_MA_RCINI_RX1, 0);
1176 skge_write8(hw, B3_MA_RCINI_RX2, 0);
1177 skge_write8(hw, B3_MA_RCINI_TX1, 0);
1178 skge_write8(hw, B3_MA_RCINI_TX2, 0);
1179
1180 /* configure packet arbiter timeout */
1181 skge_write16(hw, B3_PA_CTRL, PA_RST_CLR);
1182 skge_write16(hw, B3_PA_TOINI_RX1, SK_PKT_TO_MAX);
1183 skge_write16(hw, B3_PA_TOINI_TX1, SK_PKT_TO_MAX);
1184 skge_write16(hw, B3_PA_TOINI_RX2, SK_PKT_TO_MAX);
1185 skge_write16(hw, B3_PA_TOINI_TX2, SK_PKT_TO_MAX);
1186 }
1187
1188 static void genesis_reset(struct skge_hw *hw, int port)
1189 {
1190 const u8 zero[8] = { 0 };
1191 u32 reg;
1192
1193 skge_write8(hw, SK_REG(port, GMAC_IRQ_MSK), 0);
1194
1195 /* reset the statistics module */
1196 xm_write32(hw, port, XM_GP_PORT, XM_GP_RES_STAT);
1197 xm_write16(hw, port, XM_IMSK, XM_IMSK_DISABLE);
1198 xm_write32(hw, port, XM_MODE, 0); /* clear Mode Reg */
1199 xm_write16(hw, port, XM_TX_CMD, 0); /* reset TX CMD Reg */
1200 xm_write16(hw, port, XM_RX_CMD, 0); /* reset RX CMD Reg */
1201
1202 /* disable Broadcom PHY IRQ */
1203 if (hw->phy_type == SK_PHY_BCOM)
1204 xm_write16(hw, port, PHY_BCOM_INT_MASK, 0xffff);
1205
1206 xm_outhash(hw, port, XM_HSM, zero);
1207
1208 /* Flush TX and RX fifo */
1209 reg = xm_read32(hw, port, XM_MODE);
1210 xm_write32(hw, port, XM_MODE, reg | XM_MD_FTF);
1211 xm_write32(hw, port, XM_MODE, reg | XM_MD_FRF);
1212 }
1213
1214
1215 /* Convert mode to MII values */
1216 static const u16 phy_pause_map[] = {
1217 [FLOW_MODE_NONE] = 0,
1218 [FLOW_MODE_LOC_SEND] = PHY_AN_PAUSE_ASYM,
1219 [FLOW_MODE_SYMMETRIC] = PHY_AN_PAUSE_CAP,
1220 [FLOW_MODE_SYM_OR_REM] = PHY_AN_PAUSE_CAP | PHY_AN_PAUSE_ASYM,
1221 };
1222
1223 /* special defines for FIBER (88E1011S only) */
1224 static const u16 fiber_pause_map[] = {
1225 [FLOW_MODE_NONE] = PHY_X_P_NO_PAUSE,
1226 [FLOW_MODE_LOC_SEND] = PHY_X_P_ASYM_MD,
1227 [FLOW_MODE_SYMMETRIC] = PHY_X_P_SYM_MD,
1228 [FLOW_MODE_SYM_OR_REM] = PHY_X_P_BOTH_MD,
1229 };
1230
1231
1232 /* Check status of Broadcom phy link */
1233 static void bcom_check_link(struct skge_hw *hw, int port)
1234 {
1235 struct net_device *dev = hw->dev[port];
1236 struct skge_port *skge = netdev_priv(dev);
1237 u16 status;
1238
1239 /* read twice because of latch */
1240 xm_phy_read(hw, port, PHY_BCOM_STAT);
1241 status = xm_phy_read(hw, port, PHY_BCOM_STAT);
1242
1243 if ((status & PHY_ST_LSYNC) == 0) {
1244 xm_link_down(hw, port);
1245 return;
1246 }
1247
1248 if (skge->autoneg == AUTONEG_ENABLE) {
1249 u16 lpa, aux;
1250
1251 if (!(status & PHY_ST_AN_OVER))
1252 return;
1253
1254 lpa = xm_phy_read(hw, port, PHY_XMAC_AUNE_LP);
1255 if (lpa & PHY_B_AN_RF) {
1256 printk(KERN_NOTICE PFX "%s: remote fault\n",
1257 dev->name);
1258 return;
1259 }
1260
1261 aux = xm_phy_read(hw, port, PHY_BCOM_AUX_STAT);
1262
1263 /* Check Duplex mismatch */
1264 switch (aux & PHY_B_AS_AN_RES_MSK) {
1265 case PHY_B_RES_1000FD:
1266 skge->duplex = DUPLEX_FULL;
1267 break;
1268 case PHY_B_RES_1000HD:
1269 skge->duplex = DUPLEX_HALF;
1270 break;
1271 default:
1272 printk(KERN_NOTICE PFX "%s: duplex mismatch\n",
1273 dev->name);
1274 return;
1275 }
1276
1277 /* We are using IEEE 802.3z/D5.0 Table 37-4 */
1278 switch (aux & PHY_B_AS_PAUSE_MSK) {
1279 case PHY_B_AS_PAUSE_MSK:
1280 skge->flow_status = FLOW_STAT_SYMMETRIC;
1281 break;
1282 case PHY_B_AS_PRR:
1283 skge->flow_status = FLOW_STAT_REM_SEND;
1284 break;
1285 case PHY_B_AS_PRT:
1286 skge->flow_status = FLOW_STAT_LOC_SEND;
1287 break;
1288 default:
1289 skge->flow_status = FLOW_STAT_NONE;
1290 }
1291 skge->speed = SPEED_1000;
1292 }
1293
1294 if (!netif_carrier_ok(dev))
1295 genesis_link_up(skge);
1296 }
1297
1298 /* Broadcom 5400 only supports giagabit! SysKonnect did not put an additional
1299 * Phy on for 100 or 10Mbit operation
1300 */
1301 static void bcom_phy_init(struct skge_port *skge)
1302 {
1303 struct skge_hw *hw = skge->hw;
1304 int port = skge->port;
1305 int i;
1306 u16 id1, r, ext, ctl;
1307
1308 /* magic workaround patterns for Broadcom */
1309 static const struct {
1310 u16 reg;
1311 u16 val;
1312 } A1hack[] = {
1313 { 0x18, 0x0c20 }, { 0x17, 0x0012 }, { 0x15, 0x1104 },
1314 { 0x17, 0x0013 }, { 0x15, 0x0404 }, { 0x17, 0x8006 },
1315 { 0x15, 0x0132 }, { 0x17, 0x8006 }, { 0x15, 0x0232 },
1316 { 0x17, 0x800D }, { 0x15, 0x000F }, { 0x18, 0x0420 },
1317 }, C0hack[] = {
1318 { 0x18, 0x0c20 }, { 0x17, 0x0012 }, { 0x15, 0x1204 },
1319 { 0x17, 0x0013 }, { 0x15, 0x0A04 }, { 0x18, 0x0420 },
1320 };
1321
1322 /* read Id from external PHY (all have the same address) */
1323 id1 = xm_phy_read(hw, port, PHY_XMAC_ID1);
1324
1325 /* Optimize MDIO transfer by suppressing preamble. */
1326 r = xm_read16(hw, port, XM_MMU_CMD);
1327 r |= XM_MMU_NO_PRE;
1328 xm_write16(hw, port, XM_MMU_CMD,r);
1329
1330 switch (id1) {
1331 case PHY_BCOM_ID1_C0:
1332 /*
1333 * Workaround BCOM Errata for the C0 type.
1334 * Write magic patterns to reserved registers.
1335 */
1336 for (i = 0; i < ARRAY_SIZE(C0hack); i++)
1337 xm_phy_write(hw, port,
1338 C0hack[i].reg, C0hack[i].val);
1339
1340 break;
1341 case PHY_BCOM_ID1_A1:
1342 /*
1343 * Workaround BCOM Errata for the A1 type.
1344 * Write magic patterns to reserved registers.
1345 */
1346 for (i = 0; i < ARRAY_SIZE(A1hack); i++)
1347 xm_phy_write(hw, port,
1348 A1hack[i].reg, A1hack[i].val);
1349 break;
1350 }
1351
1352 /*
1353 * Workaround BCOM Errata (#10523) for all BCom PHYs.
1354 * Disable Power Management after reset.
1355 */
1356 r = xm_phy_read(hw, port, PHY_BCOM_AUX_CTRL);
1357 r |= PHY_B_AC_DIS_PM;
1358 xm_phy_write(hw, port, PHY_BCOM_AUX_CTRL, r);
1359
1360 /* Dummy read */
1361 xm_read16(hw, port, XM_ISRC);
1362
1363 ext = PHY_B_PEC_EN_LTR; /* enable tx led */
1364 ctl = PHY_CT_SP1000; /* always 1000mbit */
1365
1366 if (skge->autoneg == AUTONEG_ENABLE) {
1367 /*
1368 * Workaround BCOM Errata #1 for the C5 type.
1369 * 1000Base-T Link Acquisition Failure in Slave Mode
1370 * Set Repeater/DTE bit 10 of the 1000Base-T Control Register
1371 */
1372 u16 adv = PHY_B_1000C_RD;
1373 if (skge->advertising & ADVERTISED_1000baseT_Half)
1374 adv |= PHY_B_1000C_AHD;
1375 if (skge->advertising & ADVERTISED_1000baseT_Full)
1376 adv |= PHY_B_1000C_AFD;
1377 xm_phy_write(hw, port, PHY_BCOM_1000T_CTRL, adv);
1378
1379 ctl |= PHY_CT_ANE | PHY_CT_RE_CFG;
1380 } else {
1381 if (skge->duplex == DUPLEX_FULL)
1382 ctl |= PHY_CT_DUP_MD;
1383 /* Force to slave */
1384 xm_phy_write(hw, port, PHY_BCOM_1000T_CTRL, PHY_B_1000C_MSE);
1385 }
1386
1387 /* Set autonegotiation pause parameters */
1388 xm_phy_write(hw, port, PHY_BCOM_AUNE_ADV,
1389 phy_pause_map[skge->flow_control] | PHY_AN_CSMA);
1390
1391 /* Handle Jumbo frames */
1392 if (hw->dev[port]->mtu > ETH_DATA_LEN) {
1393 xm_phy_write(hw, port, PHY_BCOM_AUX_CTRL,
1394 PHY_B_AC_TX_TST | PHY_B_AC_LONG_PACK);
1395
1396 ext |= PHY_B_PEC_HIGH_LA;
1397
1398 }
1399
1400 xm_phy_write(hw, port, PHY_BCOM_P_EXT_CTRL, ext);
1401 xm_phy_write(hw, port, PHY_BCOM_CTRL, ctl);
1402
1403 /* Use link status change interrupt */
1404 xm_phy_write(hw, port, PHY_BCOM_INT_MASK, PHY_B_DEF_MSK);
1405 }
1406
1407 static void xm_phy_init(struct skge_port *skge)
1408 {
1409 struct skge_hw *hw = skge->hw;
1410 int port = skge->port;
1411 u16 ctrl = 0;
1412
1413 if (skge->autoneg == AUTONEG_ENABLE) {
1414 if (skge->advertising & ADVERTISED_1000baseT_Half)
1415 ctrl |= PHY_X_AN_HD;
1416 if (skge->advertising & ADVERTISED_1000baseT_Full)
1417 ctrl |= PHY_X_AN_FD;
1418
1419 ctrl |= fiber_pause_map[skge->flow_control];
1420
1421 xm_phy_write(hw, port, PHY_XMAC_AUNE_ADV, ctrl);
1422
1423 /* Restart Auto-negotiation */
1424 ctrl = PHY_CT_ANE | PHY_CT_RE_CFG;
1425 } else {
1426 /* Set DuplexMode in Config register */
1427 if (skge->duplex == DUPLEX_FULL)
1428 ctrl |= PHY_CT_DUP_MD;
1429 /*
1430 * Do NOT enable Auto-negotiation here. This would hold
1431 * the link down because no IDLEs are transmitted
1432 */
1433 }
1434
1435 xm_phy_write(hw, port, PHY_XMAC_CTRL, ctrl);
1436
1437 /* Poll PHY for status changes */
1438 mod_timer(&skge->link_timer, jiffies + LINK_HZ);
1439 }
1440
1441 static int xm_check_link(struct net_device *dev)
1442 {
1443 struct skge_port *skge = netdev_priv(dev);
1444 struct skge_hw *hw = skge->hw;
1445 int port = skge->port;
1446 u16 status;
1447
1448 /* read twice because of latch */
1449 xm_phy_read(hw, port, PHY_XMAC_STAT);
1450 status = xm_phy_read(hw, port, PHY_XMAC_STAT);
1451
1452 if ((status & PHY_ST_LSYNC) == 0) {
1453 xm_link_down(hw, port);
1454 return 0;
1455 }
1456
1457 if (skge->autoneg == AUTONEG_ENABLE) {
1458 u16 lpa, res;
1459
1460 if (!(status & PHY_ST_AN_OVER))
1461 return 0;
1462
1463 lpa = xm_phy_read(hw, port, PHY_XMAC_AUNE_LP);
1464 if (lpa & PHY_B_AN_RF) {
1465 printk(KERN_NOTICE PFX "%s: remote fault\n",
1466 dev->name);
1467 return 0;
1468 }
1469
1470 res = xm_phy_read(hw, port, PHY_XMAC_RES_ABI);
1471
1472 /* Check Duplex mismatch */
1473 switch (res & (PHY_X_RS_HD | PHY_X_RS_FD)) {
1474 case PHY_X_RS_FD:
1475 skge->duplex = DUPLEX_FULL;
1476 break;
1477 case PHY_X_RS_HD:
1478 skge->duplex = DUPLEX_HALF;
1479 break;
1480 default:
1481 printk(KERN_NOTICE PFX "%s: duplex mismatch\n",
1482 dev->name);
1483 return 0;
1484 }
1485
1486 /* We are using IEEE 802.3z/D5.0 Table 37-4 */
1487 if ((skge->flow_control == FLOW_MODE_SYMMETRIC ||
1488 skge->flow_control == FLOW_MODE_SYM_OR_REM) &&
1489 (lpa & PHY_X_P_SYM_MD))
1490 skge->flow_status = FLOW_STAT_SYMMETRIC;
1491 else if (skge->flow_control == FLOW_MODE_SYM_OR_REM &&
1492 (lpa & PHY_X_RS_PAUSE) == PHY_X_P_ASYM_MD)
1493 /* Enable PAUSE receive, disable PAUSE transmit */
1494 skge->flow_status = FLOW_STAT_REM_SEND;
1495 else if (skge->flow_control == FLOW_MODE_LOC_SEND &&
1496 (lpa & PHY_X_RS_PAUSE) == PHY_X_P_BOTH_MD)
1497 /* Disable PAUSE receive, enable PAUSE transmit */
1498 skge->flow_status = FLOW_STAT_LOC_SEND;
1499 else
1500 skge->flow_status = FLOW_STAT_NONE;
1501
1502 skge->speed = SPEED_1000;
1503 }
1504
1505 if (!netif_carrier_ok(dev))
1506 genesis_link_up(skge);
1507 return 1;
1508 }
1509
1510 /* Poll to check for link coming up.
1511 *
1512 * Since internal PHY is wired to a level triggered pin, can't
1513 * get an interrupt when carrier is detected, need to poll for
1514 * link coming up.
1515 */
1516 static void xm_link_timer(unsigned long arg)
1517 {
1518 struct skge_port *skge = (struct skge_port *) arg;
1519 struct net_device *dev = skge->netdev;
1520 struct skge_hw *hw = skge->hw;
1521 int port = skge->port;
1522 int i;
1523 unsigned long flags;
1524
1525 if (!netif_running(dev))
1526 return;
1527
1528 spin_lock_irqsave(&hw->phy_lock, flags);
1529
1530 /*
1531 * Verify that the link by checking GPIO register three times.
1532 * This pin has the signal from the link_sync pin connected to it.
1533 */
1534 for (i = 0; i < 3; i++) {
1535 if (xm_read16(hw, port, XM_GP_PORT) & XM_GP_INP_ASS)
1536 goto link_down;
1537 }
1538
1539 /* Re-enable interrupt to detect link down */
1540 if (xm_check_link(dev)) {
1541 u16 msk = xm_read16(hw, port, XM_IMSK);
1542 msk &= ~XM_IS_INP_ASS;
1543 xm_write16(hw, port, XM_IMSK, msk);
1544 xm_read16(hw, port, XM_ISRC);
1545 } else {
1546 link_down:
1547 mod_timer(&skge->link_timer,
1548 round_jiffies(jiffies + LINK_HZ));
1549 }
1550 spin_unlock_irqrestore(&hw->phy_lock, flags);
1551 }
1552
1553 static void genesis_mac_init(struct skge_hw *hw, int port)
1554 {
1555 struct net_device *dev = hw->dev[port];
1556 struct skge_port *skge = netdev_priv(dev);
1557 int jumbo = hw->dev[port]->mtu > ETH_DATA_LEN;
1558 int i;
1559 u32 r;
1560 const u8 zero[6] = { 0 };
1561
1562 for (i = 0; i < 10; i++) {
1563 skge_write16(hw, SK_REG(port, TX_MFF_CTRL1),
1564 MFF_SET_MAC_RST);
1565 if (skge_read16(hw, SK_REG(port, TX_MFF_CTRL1)) & MFF_SET_MAC_RST)
1566 goto reset_ok;
1567 udelay(1);
1568 }
1569
1570 printk(KERN_WARNING PFX "%s: genesis reset failed\n", dev->name);
1571
1572 reset_ok:
1573 /* Unreset the XMAC. */
1574 skge_write16(hw, SK_REG(port, TX_MFF_CTRL1), MFF_CLR_MAC_RST);
1575
1576 /*
1577 * Perform additional initialization for external PHYs,
1578 * namely for the 1000baseTX cards that use the XMAC's
1579 * GMII mode.
1580 */
1581 if (hw->phy_type != SK_PHY_XMAC) {
1582 /* Take external Phy out of reset */
1583 r = skge_read32(hw, B2_GP_IO);
1584 if (port == 0)
1585 r |= GP_DIR_0|GP_IO_0;
1586 else
1587 r |= GP_DIR_2|GP_IO_2;
1588
1589 skge_write32(hw, B2_GP_IO, r);
1590
1591 /* Enable GMII interface */
1592 xm_write16(hw, port, XM_HW_CFG, XM_HW_GMII_MD);
1593 }
1594
1595
1596 switch(hw->phy_type) {
1597 case SK_PHY_XMAC:
1598 xm_phy_init(skge);
1599 break;
1600 case SK_PHY_BCOM:
1601 bcom_phy_init(skge);
1602 bcom_check_link(hw, port);
1603 }
1604
1605 /* Set Station Address */
1606 xm_outaddr(hw, port, XM_SA, dev->dev_addr);
1607
1608 /* We don't use match addresses so clear */
1609 for (i = 1; i < 16; i++)
1610 xm_outaddr(hw, port, XM_EXM(i), zero);
1611
1612 /* Clear MIB counters */
1613 xm_write16(hw, port, XM_STAT_CMD,
1614 XM_SC_CLR_RXC | XM_SC_CLR_TXC);
1615 /* Clear two times according to Errata #3 */
1616 xm_write16(hw, port, XM_STAT_CMD,
1617 XM_SC_CLR_RXC | XM_SC_CLR_TXC);
1618
1619 /* configure Rx High Water Mark (XM_RX_HI_WM) */
1620 xm_write16(hw, port, XM_RX_HI_WM, 1450);
1621
1622 /* We don't need the FCS appended to the packet. */
1623 r = XM_RX_LENERR_OK | XM_RX_STRIP_FCS;
1624 if (jumbo)
1625 r |= XM_RX_BIG_PK_OK;
1626
1627 if (skge->duplex == DUPLEX_HALF) {
1628 /*
1629 * If in manual half duplex mode the other side might be in
1630 * full duplex mode, so ignore if a carrier extension is not seen
1631 * on frames received
1632 */
1633 r |= XM_RX_DIS_CEXT;
1634 }
1635 xm_write16(hw, port, XM_RX_CMD, r);
1636
1637 /* We want short frames padded to 60 bytes. */
1638 xm_write16(hw, port, XM_TX_CMD, XM_TX_AUTO_PAD);
1639
1640 /* Increase threshold for jumbo frames on dual port */
1641 if (hw->ports > 1 && jumbo)
1642 xm_write16(hw, port, XM_TX_THR, 1020);
1643 else
1644 xm_write16(hw, port, XM_TX_THR, 512);
1645
1646 /*
1647 * Enable the reception of all error frames. This is is
1648 * a necessary evil due to the design of the XMAC. The
1649 * XMAC's receive FIFO is only 8K in size, however jumbo
1650 * frames can be up to 9000 bytes in length. When bad
1651 * frame filtering is enabled, the XMAC's RX FIFO operates
1652 * in 'store and forward' mode. For this to work, the
1653 * entire frame has to fit into the FIFO, but that means
1654 * that jumbo frames larger than 8192 bytes will be
1655 * truncated. Disabling all bad frame filtering causes
1656 * the RX FIFO to operate in streaming mode, in which
1657 * case the XMAC will start transferring frames out of the
1658 * RX FIFO as soon as the FIFO threshold is reached.
1659 */
1660 xm_write32(hw, port, XM_MODE, XM_DEF_MODE);
1661
1662
1663 /*
1664 * Initialize the Receive Counter Event Mask (XM_RX_EV_MSK)
1665 * - Enable all bits excepting 'Octets Rx OK Low CntOv'
1666 * and 'Octets Rx OK Hi Cnt Ov'.
1667 */
1668 xm_write32(hw, port, XM_RX_EV_MSK, XMR_DEF_MSK);
1669
1670 /*
1671 * Initialize the Transmit Counter Event Mask (XM_TX_EV_MSK)
1672 * - Enable all bits excepting 'Octets Tx OK Low CntOv'
1673 * and 'Octets Tx OK Hi Cnt Ov'.
1674 */
1675 xm_write32(hw, port, XM_TX_EV_MSK, XMT_DEF_MSK);
1676
1677 /* Configure MAC arbiter */
1678 skge_write16(hw, B3_MA_TO_CTRL, MA_RST_CLR);
1679
1680 /* configure timeout values */
1681 skge_write8(hw, B3_MA_TOINI_RX1, 72);
1682 skge_write8(hw, B3_MA_TOINI_RX2, 72);
1683 skge_write8(hw, B3_MA_TOINI_TX1, 72);
1684 skge_write8(hw, B3_MA_TOINI_TX2, 72);
1685
1686 skge_write8(hw, B3_MA_RCINI_RX1, 0);
1687 skge_write8(hw, B3_MA_RCINI_RX2, 0);
1688 skge_write8(hw, B3_MA_RCINI_TX1, 0);
1689 skge_write8(hw, B3_MA_RCINI_TX2, 0);
1690
1691 /* Configure Rx MAC FIFO */
1692 skge_write8(hw, SK_REG(port, RX_MFF_CTRL2), MFF_RST_CLR);
1693 skge_write16(hw, SK_REG(port, RX_MFF_CTRL1), MFF_ENA_TIM_PAT);
1694 skge_write8(hw, SK_REG(port, RX_MFF_CTRL2), MFF_ENA_OP_MD);
1695
1696 /* Configure Tx MAC FIFO */
1697 skge_write8(hw, SK_REG(port, TX_MFF_CTRL2), MFF_RST_CLR);
1698 skge_write16(hw, SK_REG(port, TX_MFF_CTRL1), MFF_TX_CTRL_DEF);
1699 skge_write8(hw, SK_REG(port, TX_MFF_CTRL2), MFF_ENA_OP_MD);
1700
1701 if (jumbo) {
1702 /* Enable frame flushing if jumbo frames used */
1703 skge_write16(hw, SK_REG(port,RX_MFF_CTRL1), MFF_ENA_FLUSH);
1704 } else {
1705 /* enable timeout timers if normal frames */
1706 skge_write16(hw, B3_PA_CTRL,
1707 (port == 0) ? PA_ENA_TO_TX1 : PA_ENA_TO_TX2);
1708 }
1709 }
1710
1711 static void genesis_stop(struct skge_port *skge)
1712 {
1713 struct skge_hw *hw = skge->hw;
1714 int port = skge->port;
1715 unsigned retries = 1000;
1716 u16 cmd;
1717
1718 /* Disable Tx and Rx */
1719 cmd = xm_read16(hw, port, XM_MMU_CMD);
1720 cmd &= ~(XM_MMU_ENA_RX | XM_MMU_ENA_TX);
1721 xm_write16(hw, port, XM_MMU_CMD, cmd);
1722
1723 genesis_reset(hw, port);
1724
1725 /* Clear Tx packet arbiter timeout IRQ */
1726 skge_write16(hw, B3_PA_CTRL,
1727 port == 0 ? PA_CLR_TO_TX1 : PA_CLR_TO_TX2);
1728
1729 /* Reset the MAC */
1730 skge_write16(hw, SK_REG(port, TX_MFF_CTRL1), MFF_CLR_MAC_RST);
1731 do {
1732 skge_write16(hw, SK_REG(port, TX_MFF_CTRL1), MFF_SET_MAC_RST);
1733 if (!(skge_read16(hw, SK_REG(port, TX_MFF_CTRL1)) & MFF_SET_MAC_RST))
1734 break;
1735 } while (--retries > 0);
1736
1737 /* For external PHYs there must be special handling */
1738 if (hw->phy_type != SK_PHY_XMAC) {
1739 u32 reg = skge_read32(hw, B2_GP_IO);
1740 if (port == 0) {
1741 reg |= GP_DIR_0;
1742 reg &= ~GP_IO_0;
1743 } else {
1744 reg |= GP_DIR_2;
1745 reg &= ~GP_IO_2;
1746 }
1747 skge_write32(hw, B2_GP_IO, reg);
1748 skge_read32(hw, B2_GP_IO);
1749 }
1750
1751 xm_write16(hw, port, XM_MMU_CMD,
1752 xm_read16(hw, port, XM_MMU_CMD)
1753 & ~(XM_MMU_ENA_RX | XM_MMU_ENA_TX));
1754
1755 xm_read16(hw, port, XM_MMU_CMD);
1756 }
1757
1758
1759 static void genesis_get_stats(struct skge_port *skge, u64 *data)
1760 {
1761 struct skge_hw *hw = skge->hw;
1762 int port = skge->port;
1763 int i;
1764 unsigned long timeout = jiffies + HZ;
1765
1766 xm_write16(hw, port,
1767 XM_STAT_CMD, XM_SC_SNP_TXC | XM_SC_SNP_RXC);
1768
1769 /* wait for update to complete */
1770 while (xm_read16(hw, port, XM_STAT_CMD)
1771 & (XM_SC_SNP_TXC | XM_SC_SNP_RXC)) {
1772 if (time_after(jiffies, timeout))
1773 break;
1774 udelay(10);
1775 }
1776
1777 /* special case for 64 bit octet counter */
1778 data[0] = (u64) xm_read32(hw, port, XM_TXO_OK_HI) << 32
1779 | xm_read32(hw, port, XM_TXO_OK_LO);
1780 data[1] = (u64) xm_read32(hw, port, XM_RXO_OK_HI) << 32
1781 | xm_read32(hw, port, XM_RXO_OK_LO);
1782
1783 for (i = 2; i < ARRAY_SIZE(skge_stats); i++)
1784 data[i] = xm_read32(hw, port, skge_stats[i].xmac_offset);
1785 }
1786
1787 static void genesis_mac_intr(struct skge_hw *hw, int port)
1788 {
1789 struct net_device *dev = hw->dev[port];
1790 struct skge_port *skge = netdev_priv(dev);
1791 u16 status = xm_read16(hw, port, XM_ISRC);
1792
1793 if (netif_msg_intr(skge))
1794 printk(KERN_DEBUG PFX "%s: mac interrupt status 0x%x\n",
1795 dev->name, status);
1796
1797 if (hw->phy_type == SK_PHY_XMAC && (status & XM_IS_INP_ASS)) {
1798 xm_link_down(hw, port);
1799 mod_timer(&skge->link_timer, jiffies + 1);
1800 }
1801
1802 if (status & XM_IS_TXF_UR) {
1803 xm_write32(hw, port, XM_MODE, XM_MD_FTF);
1804 ++dev->stats.tx_fifo_errors;
1805 }
1806 }
1807
1808 static void genesis_link_up(struct skge_port *skge)
1809 {
1810 struct skge_hw *hw = skge->hw;
1811 int port = skge->port;
1812 u16 cmd, msk;
1813 u32 mode;
1814
1815 cmd = xm_read16(hw, port, XM_MMU_CMD);
1816
1817 /*
1818 * enabling pause frame reception is required for 1000BT
1819 * because the XMAC is not reset if the link is going down
1820 */
1821 if (skge->flow_status == FLOW_STAT_NONE ||
1822 skge->flow_status == FLOW_STAT_LOC_SEND)
1823 /* Disable Pause Frame Reception */
1824 cmd |= XM_MMU_IGN_PF;
1825 else
1826 /* Enable Pause Frame Reception */
1827 cmd &= ~XM_MMU_IGN_PF;
1828
1829 xm_write16(hw, port, XM_MMU_CMD, cmd);
1830
1831 mode = xm_read32(hw, port, XM_MODE);
1832 if (skge->flow_status== FLOW_STAT_SYMMETRIC ||
1833 skge->flow_status == FLOW_STAT_LOC_SEND) {
1834 /*
1835 * Configure Pause Frame Generation
1836 * Use internal and external Pause Frame Generation.
1837 * Sending pause frames is edge triggered.
1838 * Send a Pause frame with the maximum pause time if
1839 * internal oder external FIFO full condition occurs.
1840 * Send a zero pause time frame to re-start transmission.
1841 */
1842 /* XM_PAUSE_DA = '010000C28001' (default) */
1843 /* XM_MAC_PTIME = 0xffff (maximum) */
1844 /* remember this value is defined in big endian (!) */
1845 xm_write16(hw, port, XM_MAC_PTIME, 0xffff);
1846
1847 mode |= XM_PAUSE_MODE;
1848 skge_write16(hw, SK_REG(port, RX_MFF_CTRL1), MFF_ENA_PAUSE);
1849 } else {
1850 /*
1851 * disable pause frame generation is required for 1000BT
1852 * because the XMAC is not reset if the link is going down
1853 */
1854 /* Disable Pause Mode in Mode Register */
1855 mode &= ~XM_PAUSE_MODE;
1856
1857 skge_write16(hw, SK_REG(port, RX_MFF_CTRL1), MFF_DIS_PAUSE);
1858 }
1859
1860 xm_write32(hw, port, XM_MODE, mode);
1861
1862 /* Turn on detection of Tx underrun */
1863 msk = xm_read16(hw, port, XM_IMSK);
1864 msk &= ~XM_IS_TXF_UR;
1865 xm_write16(hw, port, XM_IMSK, msk);
1866
1867 xm_read16(hw, port, XM_ISRC);
1868
1869 /* get MMU Command Reg. */
1870 cmd = xm_read16(hw, port, XM_MMU_CMD);
1871 if (hw->phy_type != SK_PHY_XMAC && skge->duplex == DUPLEX_FULL)
1872 cmd |= XM_MMU_GMII_FD;
1873
1874 /*
1875 * Workaround BCOM Errata (#10523) for all BCom Phys
1876 * Enable Power Management after link up
1877 */
1878 if (hw->phy_type == SK_PHY_BCOM) {
1879 xm_phy_write(hw, port, PHY_BCOM_AUX_CTRL,
1880 xm_phy_read(hw, port, PHY_BCOM_AUX_CTRL)
1881 & ~PHY_B_AC_DIS_PM);
1882 xm_phy_write(hw, port, PHY_BCOM_INT_MASK, PHY_B_DEF_MSK);
1883 }
1884
1885 /* enable Rx/Tx */
1886 xm_write16(hw, port, XM_MMU_CMD,
1887 cmd | XM_MMU_ENA_RX | XM_MMU_ENA_TX);
1888 skge_link_up(skge);
1889 }
1890
1891
1892 static inline void bcom_phy_intr(struct skge_port *skge)
1893 {
1894 struct skge_hw *hw = skge->hw;
1895 int port = skge->port;
1896 u16 isrc;
1897
1898 isrc = xm_phy_read(hw, port, PHY_BCOM_INT_STAT);
1899 if (netif_msg_intr(skge))
1900 printk(KERN_DEBUG PFX "%s: phy interrupt status 0x%x\n",
1901 skge->netdev->name, isrc);
1902
1903 if (isrc & PHY_B_IS_PSE)
1904 printk(KERN_ERR PFX "%s: uncorrectable pair swap error\n",
1905 hw->dev[port]->name);
1906
1907 /* Workaround BCom Errata:
1908 * enable and disable loopback mode if "NO HCD" occurs.
1909 */
1910 if (isrc & PHY_B_IS_NO_HDCL) {
1911 u16 ctrl = xm_phy_read(hw, port, PHY_BCOM_CTRL);
1912 xm_phy_write(hw, port, PHY_BCOM_CTRL,
1913 ctrl | PHY_CT_LOOP);
1914 xm_phy_write(hw, port, PHY_BCOM_CTRL,
1915 ctrl & ~PHY_CT_LOOP);
1916 }
1917
1918 if (isrc & (PHY_B_IS_AN_PR | PHY_B_IS_LST_CHANGE))
1919 bcom_check_link(hw, port);
1920
1921 }
1922
1923 static int gm_phy_write(struct skge_hw *hw, int port, u16 reg, u16 val)
1924 {
1925 int i;
1926
1927 gma_write16(hw, port, GM_SMI_DATA, val);
1928 gma_write16(hw, port, GM_SMI_CTRL,
1929 GM_SMI_CT_PHY_AD(hw->phy_addr) | GM_SMI_CT_REG_AD(reg));
1930 for (i = 0; i < PHY_RETRIES; i++) {
1931 udelay(1);
1932
1933 if (!(gma_read16(hw, port, GM_SMI_CTRL) & GM_SMI_CT_BUSY))
1934 return 0;
1935 }
1936
1937 printk(KERN_WARNING PFX "%s: phy write timeout\n",
1938 hw->dev[port]->name);
1939 return -EIO;
1940 }
1941
1942 static int __gm_phy_read(struct skge_hw *hw, int port, u16 reg, u16 *val)
1943 {
1944 int i;
1945
1946 gma_write16(hw, port, GM_SMI_CTRL,
1947 GM_SMI_CT_PHY_AD(hw->phy_addr)
1948 | GM_SMI_CT_REG_AD(reg) | GM_SMI_CT_OP_RD);
1949
1950 for (i = 0; i < PHY_RETRIES; i++) {
1951 udelay(1);
1952 if (gma_read16(hw, port, GM_SMI_CTRL) & GM_SMI_CT_RD_VAL)
1953 goto ready;
1954 }
1955
1956 return -ETIMEDOUT;
1957 ready:
1958 *val = gma_read16(hw, port, GM_SMI_DATA);
1959 return 0;
1960 }
1961
1962 static u16 gm_phy_read(struct skge_hw *hw, int port, u16 reg)
1963 {
1964 u16 v = 0;
1965 if (__gm_phy_read(hw, port, reg, &v))
1966 printk(KERN_WARNING PFX "%s: phy read timeout\n",
1967 hw->dev[port]->name);
1968 return v;
1969 }
1970
1971 /* Marvell Phy Initialization */
1972 static void yukon_init(struct skge_hw *hw, int port)
1973 {
1974 struct skge_port *skge = netdev_priv(hw->dev[port]);
1975 u16 ctrl, ct1000, adv;
1976
1977 if (skge->autoneg == AUTONEG_ENABLE) {
1978 u16 ectrl = gm_phy_read(hw, port, PHY_MARV_EXT_CTRL);
1979
1980 ectrl &= ~(PHY_M_EC_M_DSC_MSK | PHY_M_EC_S_DSC_MSK |
1981 PHY_M_EC_MAC_S_MSK);
1982 ectrl |= PHY_M_EC_MAC_S(MAC_TX_CLK_25_MHZ);
1983
1984 ectrl |= PHY_M_EC_M_DSC(0) | PHY_M_EC_S_DSC(1);
1985
1986 gm_phy_write(hw, port, PHY_MARV_EXT_CTRL, ectrl);
1987 }
1988
1989 ctrl = gm_phy_read(hw, port, PHY_MARV_CTRL);
1990 if (skge->autoneg == AUTONEG_DISABLE)
1991 ctrl &= ~PHY_CT_ANE;
1992
1993 ctrl |= PHY_CT_RESET;
1994 gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
1995
1996 ctrl = 0;
1997 ct1000 = 0;
1998 adv = PHY_AN_CSMA;
1999
2000 if (skge->autoneg == AUTONEG_ENABLE) {
2001 if (hw->copper) {
2002 if (skge->advertising & ADVERTISED_1000baseT_Full)
2003 ct1000 |= PHY_M_1000C_AFD;
2004 if (skge->advertising & ADVERTISED_1000baseT_Half)
2005 ct1000 |= PHY_M_1000C_AHD;
2006 if (skge->advertising & ADVERTISED_100baseT_Full)
2007 adv |= PHY_M_AN_100_FD;
2008 if (skge->advertising & ADVERTISED_100baseT_Half)
2009 adv |= PHY_M_AN_100_HD;
2010 if (skge->advertising & ADVERTISED_10baseT_Full)
2011 adv |= PHY_M_AN_10_FD;
2012 if (skge->advertising & ADVERTISED_10baseT_Half)
2013 adv |= PHY_M_AN_10_HD;
2014
2015 /* Set Flow-control capabilities */
2016 adv |= phy_pause_map[skge->flow_control];
2017 } else {
2018 if (skge->advertising & ADVERTISED_1000baseT_Full)
2019 adv |= PHY_M_AN_1000X_AFD;
2020 if (skge->advertising & ADVERTISED_1000baseT_Half)
2021 adv |= PHY_M_AN_1000X_AHD;
2022
2023 adv |= fiber_pause_map[skge->flow_control];
2024 }
2025
2026 /* Restart Auto-negotiation */
2027 ctrl |= PHY_CT_ANE | PHY_CT_RE_CFG;
2028 } else {
2029 /* forced speed/duplex settings */
2030 ct1000 = PHY_M_1000C_MSE;
2031
2032 if (skge->duplex == DUPLEX_FULL)
2033 ctrl |= PHY_CT_DUP_MD;
2034
2035 switch (skge->speed) {
2036 case SPEED_1000:
2037 ctrl |= PHY_CT_SP1000;
2038 break;
2039 case SPEED_100:
2040 ctrl |= PHY_CT_SP100;
2041 break;
2042 }
2043
2044 ctrl |= PHY_CT_RESET;
2045 }
2046
2047 gm_phy_write(hw, port, PHY_MARV_1000T_CTRL, ct1000);
2048
2049 gm_phy_write(hw, port, PHY_MARV_AUNE_ADV, adv);
2050 gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
2051
2052 /* Enable phy interrupt on autonegotiation complete (or link up) */
2053 if (skge->autoneg == AUTONEG_ENABLE)
2054 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_IS_AN_MSK);
2055 else
2056 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_IS_DEF_MSK);
2057 }
2058
2059 static void yukon_reset(struct skge_hw *hw, int port)
2060 {
2061 gm_phy_write(hw, port, PHY_MARV_INT_MASK, 0);/* disable PHY IRQs */
2062 gma_write16(hw, port, GM_MC_ADDR_H1, 0); /* clear MC hash */
2063 gma_write16(hw, port, GM_MC_ADDR_H2, 0);
2064 gma_write16(hw, port, GM_MC_ADDR_H3, 0);
2065 gma_write16(hw, port, GM_MC_ADDR_H4, 0);
2066
2067 gma_write16(hw, port, GM_RX_CTRL,
2068 gma_read16(hw, port, GM_RX_CTRL)
2069 | GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA);
2070 }
2071
2072 /* Apparently, early versions of Yukon-Lite had wrong chip_id? */
2073 static int is_yukon_lite_a0(struct skge_hw *hw)
2074 {
2075 u32 reg;
2076 int ret;
2077
2078 if (hw->chip_id != CHIP_ID_YUKON)
2079 return 0;
2080
2081 reg = skge_read32(hw, B2_FAR);
2082 skge_write8(hw, B2_FAR + 3, 0xff);
2083 ret = (skge_read8(hw, B2_FAR + 3) != 0);
2084 skge_write32(hw, B2_FAR, reg);
2085 return ret;
2086 }
2087
2088 static void yukon_mac_init(struct skge_hw *hw, int port)
2089 {
2090 struct skge_port *skge = netdev_priv(hw->dev[port]);
2091 int i;
2092 u32 reg;
2093 const u8 *addr = hw->dev[port]->dev_addr;
2094
2095 /* WA code for COMA mode -- set PHY reset */
2096 if (hw->chip_id == CHIP_ID_YUKON_LITE &&
2097 hw->chip_rev >= CHIP_REV_YU_LITE_A3) {
2098 reg = skge_read32(hw, B2_GP_IO);
2099 reg |= GP_DIR_9 | GP_IO_9;
2100 skge_write32(hw, B2_GP_IO, reg);
2101 }
2102
2103 /* hard reset */
2104 skge_write32(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
2105 skge_write32(hw, SK_REG(port, GMAC_CTRL), GMC_RST_SET);
2106
2107 /* WA code for COMA mode -- clear PHY reset */
2108 if (hw->chip_id == CHIP_ID_YUKON_LITE &&
2109 hw->chip_rev >= CHIP_REV_YU_LITE_A3) {
2110 reg = skge_read32(hw, B2_GP_IO);
2111 reg |= GP_DIR_9;
2112 reg &= ~GP_IO_9;
2113 skge_write32(hw, B2_GP_IO, reg);
2114 }
2115
2116 /* Set hardware config mode */
2117 reg = GPC_INT_POL_HI | GPC_DIS_FC | GPC_DIS_SLEEP |
2118 GPC_ENA_XC | GPC_ANEG_ADV_ALL_M | GPC_ENA_PAUSE;
2119 reg |= hw->copper ? GPC_HWCFG_GMII_COP : GPC_HWCFG_GMII_FIB;
2120
2121 /* Clear GMC reset */
2122 skge_write32(hw, SK_REG(port, GPHY_CTRL), reg | GPC_RST_SET);
2123 skge_write32(hw, SK_REG(port, GPHY_CTRL), reg | GPC_RST_CLR);
2124 skge_write32(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON | GMC_RST_CLR);
2125
2126 if (skge->autoneg == AUTONEG_DISABLE) {
2127 reg = GM_GPCR_AU_ALL_DIS;
2128 gma_write16(hw, port, GM_GP_CTRL,
2129 gma_read16(hw, port, GM_GP_CTRL) | reg);
2130
2131 switch (skge->speed) {
2132 case SPEED_1000:
2133 reg &= ~GM_GPCR_SPEED_100;
2134 reg |= GM_GPCR_SPEED_1000;
2135 break;
2136 case SPEED_100:
2137 reg &= ~GM_GPCR_SPEED_1000;
2138 reg |= GM_GPCR_SPEED_100;
2139 break;
2140 case SPEED_10:
2141 reg &= ~(GM_GPCR_SPEED_1000 | GM_GPCR_SPEED_100);
2142 break;
2143 }
2144
2145 if (skge->duplex == DUPLEX_FULL)
2146 reg |= GM_GPCR_DUP_FULL;
2147 } else
2148 reg = GM_GPCR_SPEED_1000 | GM_GPCR_SPEED_100 | GM_GPCR_DUP_FULL;
2149
2150 switch (skge->flow_control) {
2151 case FLOW_MODE_NONE:
2152 skge_write32(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
2153 reg |= GM_GPCR_FC_TX_DIS | GM_GPCR_FC_RX_DIS | GM_GPCR_AU_FCT_DIS;
2154 break;
2155 case FLOW_MODE_LOC_SEND:
2156 /* disable Rx flow-control */
2157 reg |= GM_GPCR_FC_RX_DIS | GM_GPCR_AU_FCT_DIS;
2158 break;
2159 case FLOW_MODE_SYMMETRIC:
2160 case FLOW_MODE_SYM_OR_REM:
2161 /* enable Tx & Rx flow-control */
2162 break;
2163 }
2164
2165 gma_write16(hw, port, GM_GP_CTRL, reg);
2166 skge_read16(hw, SK_REG(port, GMAC_IRQ_SRC));
2167
2168 yukon_init(hw, port);
2169
2170 /* MIB clear */
2171 reg = gma_read16(hw, port, GM_PHY_ADDR);
2172 gma_write16(hw, port, GM_PHY_ADDR, reg | GM_PAR_MIB_CLR);
2173
2174 for (i = 0; i < GM_MIB_CNT_SIZE; i++)
2175 gma_read16(hw, port, GM_MIB_CNT_BASE + 8*i);
2176 gma_write16(hw, port, GM_PHY_ADDR, reg);
2177
2178 /* transmit control */
2179 gma_write16(hw, port, GM_TX_CTRL, TX_COL_THR(TX_COL_DEF));
2180
2181 /* receive control reg: unicast + multicast + no FCS */
2182 gma_write16(hw, port, GM_RX_CTRL,
2183 GM_RXCR_UCF_ENA | GM_RXCR_CRC_DIS | GM_RXCR_MCF_ENA);
2184
2185 /* transmit flow control */
2186 gma_write16(hw, port, GM_TX_FLOW_CTRL, 0xffff);
2187
2188 /* transmit parameter */
2189 gma_write16(hw, port, GM_TX_PARAM,
2190 TX_JAM_LEN_VAL(TX_JAM_LEN_DEF) |
2191 TX_JAM_IPG_VAL(TX_JAM_IPG_DEF) |
2192 TX_IPG_JAM_DATA(TX_IPG_JAM_DEF));
2193
2194 /* configure the Serial Mode Register */
2195 reg = DATA_BLIND_VAL(DATA_BLIND_DEF)
2196 | GM_SMOD_VLAN_ENA
2197 | IPG_DATA_VAL(IPG_DATA_DEF);
2198
2199 if (hw->dev[port]->mtu > ETH_DATA_LEN)
2200 reg |= GM_SMOD_JUMBO_ENA;
2201
2202 gma_write16(hw, port, GM_SERIAL_MODE, reg);
2203
2204 /* physical address: used for pause frames */
2205 gma_set_addr(hw, port, GM_SRC_ADDR_1L, addr);
2206 /* virtual address for data */
2207 gma_set_addr(hw, port, GM_SRC_ADDR_2L, addr);
2208
2209 /* enable interrupt mask for counter overflows */
2210 gma_write16(hw, port, GM_TX_IRQ_MSK, 0);
2211 gma_write16(hw, port, GM_RX_IRQ_MSK, 0);
2212 gma_write16(hw, port, GM_TR_IRQ_MSK, 0);
2213
2214 /* Initialize Mac Fifo */
2215
2216 /* Configure Rx MAC FIFO */
2217 skge_write16(hw, SK_REG(port, RX_GMF_FL_MSK), RX_FF_FL_DEF_MSK);
2218 reg = GMF_OPER_ON | GMF_RX_F_FL_ON;
2219
2220 /* disable Rx GMAC FIFO Flush for YUKON-Lite Rev. A0 only */
2221 if (is_yukon_lite_a0(hw))
2222 reg &= ~GMF_RX_F_FL_ON;
2223
2224 skge_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_CLR);
2225 skge_write16(hw, SK_REG(port, RX_GMF_CTRL_T), reg);
2226 /*
2227 * because Pause Packet Truncation in GMAC is not working
2228 * we have to increase the Flush Threshold to 64 bytes
2229 * in order to flush pause packets in Rx FIFO on Yukon-1
2230 */
2231 skge_write16(hw, SK_REG(port, RX_GMF_FL_THR), RX_GMF_FL_THR_DEF+1);
2232
2233 /* Configure Tx MAC FIFO */
2234 skge_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_CLR);
2235 skge_write16(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_OPER_ON);
2236 }
2237
2238 /* Go into power down mode */
2239 static void yukon_suspend(struct skge_hw *hw, int port)
2240 {
2241 u16 ctrl;
2242
2243 ctrl = gm_phy_read(hw, port, PHY_MARV_PHY_CTRL);
2244 ctrl |= PHY_M_PC_POL_R_DIS;
2245 gm_phy_write(hw, port, PHY_MARV_PHY_CTRL, ctrl);
2246
2247 ctrl = gm_phy_read(hw, port, PHY_MARV_CTRL);
2248 ctrl |= PHY_CT_RESET;
2249 gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
2250
2251 /* switch IEEE compatible power down mode on */
2252 ctrl = gm_phy_read(hw, port, PHY_MARV_CTRL);
2253 ctrl |= PHY_CT_PDOWN;
2254 gm_phy_write(hw, port, PHY_MARV_CTRL, ctrl);
2255 }
2256
2257 static void yukon_stop(struct skge_port *skge)
2258 {
2259 struct skge_hw *hw = skge->hw;
2260 int port = skge->port;
2261
2262 skge_write8(hw, SK_REG(port, GMAC_IRQ_MSK), 0);
2263 yukon_reset(hw, port);
2264
2265 gma_write16(hw, port, GM_GP_CTRL,
2266 gma_read16(hw, port, GM_GP_CTRL)
2267 & ~(GM_GPCR_TX_ENA|GM_GPCR_RX_ENA));
2268 gma_read16(hw, port, GM_GP_CTRL);
2269
2270 yukon_suspend(hw, port);
2271
2272 /* set GPHY Control reset */
2273 skge_write8(hw, SK_REG(port, GPHY_CTRL), GPC_RST_SET);
2274 skge_write8(hw, SK_REG(port, GMAC_CTRL), GMC_RST_SET);
2275 }
2276
2277 static void yukon_get_stats(struct skge_port *skge, u64 *data)
2278 {
2279 struct skge_hw *hw = skge->hw;
2280 int port = skge->port;
2281 int i;
2282
2283 data[0] = (u64) gma_read32(hw, port, GM_TXO_OK_HI) << 32
2284 | gma_read32(hw, port, GM_TXO_OK_LO);
2285 data[1] = (u64) gma_read32(hw, port, GM_RXO_OK_HI) << 32
2286 | gma_read32(hw, port, GM_RXO_OK_LO);
2287
2288 for (i = 2; i < ARRAY_SIZE(skge_stats); i++)
2289 data[i] = gma_read32(hw, port,
2290 skge_stats[i].gma_offset);
2291 }
2292
2293 static void yukon_mac_intr(struct skge_hw *hw, int port)
2294 {
2295 struct net_device *dev = hw->dev[port];
2296 struct skge_port *skge = netdev_priv(dev);
2297 u8 status = skge_read8(hw, SK_REG(port, GMAC_IRQ_SRC));
2298
2299 if (netif_msg_intr(skge))
2300 printk(KERN_DEBUG PFX "%s: mac interrupt status 0x%x\n",
2301 dev->name, status);
2302
2303 if (status & GM_IS_RX_FF_OR) {
2304 ++dev->stats.rx_fifo_errors;
2305 skge_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_CLI_RX_FO);
2306 }
2307
2308 if (status & GM_IS_TX_FF_UR) {
2309 ++dev->stats.tx_fifo_errors;
2310 skge_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_CLI_TX_FU);
2311 }
2312
2313 }
2314
2315 static u16 yukon_speed(const struct skge_hw *hw, u16 aux)
2316 {
2317 switch (aux & PHY_M_PS_SPEED_MSK) {
2318 case PHY_M_PS_SPEED_1000:
2319 return SPEED_1000;
2320 case PHY_M_PS_SPEED_100:
2321 return SPEED_100;
2322 default:
2323 return SPEED_10;
2324 }
2325 }
2326
2327 static void yukon_link_up(struct skge_port *skge)
2328 {
2329 struct skge_hw *hw = skge->hw;
2330 int port = skge->port;
2331 u16 reg;
2332
2333 /* Enable Transmit FIFO Underrun */
2334 skge_write8(hw, SK_REG(port, GMAC_IRQ_MSK), GMAC_DEF_MSK);
2335
2336 reg = gma_read16(hw, port, GM_GP_CTRL);
2337 if (skge->duplex == DUPLEX_FULL || skge->autoneg == AUTONEG_ENABLE)
2338 reg |= GM_GPCR_DUP_FULL;
2339
2340 /* enable Rx/Tx */
2341 reg |= GM_GPCR_RX_ENA | GM_GPCR_TX_ENA;
2342 gma_write16(hw, port, GM_GP_CTRL, reg);
2343
2344 gm_phy_write(hw, port, PHY_MARV_INT_MASK, PHY_M_IS_DEF_MSK);
2345 skge_link_up(skge);
2346 }
2347
2348 static void yukon_link_down(struct skge_port *skge)
2349 {
2350 struct skge_hw *hw = skge->hw;
2351 int port = skge->port;
2352 u16 ctrl;
2353
2354 ctrl = gma_read16(hw, port, GM_GP_CTRL);
2355 ctrl &= ~(GM_GPCR_RX_ENA | GM_GPCR_TX_ENA);
2356 gma_write16(hw, port, GM_GP_CTRL, ctrl);
2357
2358 if (skge->flow_status == FLOW_STAT_REM_SEND) {
2359 ctrl = gm_phy_read(hw, port, PHY_MARV_AUNE_ADV);
2360 ctrl |= PHY_M_AN_ASP;
2361 /* restore Asymmetric Pause bit */
2362 gm_phy_write(hw, port, PHY_MARV_AUNE_ADV, ctrl);
2363 }
2364
2365 skge_link_down(skge);
2366
2367 yukon_init(hw, port);
2368 }
2369
2370 static void yukon_phy_intr(struct skge_port *skge)
2371 {
2372 struct skge_hw *hw = skge->hw;
2373 int port = skge->port;
2374 const char *reason = NULL;
2375 u16 istatus, phystat;
2376
2377 istatus = gm_phy_read(hw, port, PHY_MARV_INT_STAT);
2378 phystat = gm_phy_read(hw, port, PHY_MARV_PHY_STAT);
2379
2380 if (netif_msg_intr(skge))
2381 printk(KERN_DEBUG PFX "%s: phy interrupt status 0x%x 0x%x\n",
2382 skge->netdev->name, istatus, phystat);
2383
2384 if (istatus & PHY_M_IS_AN_COMPL) {
2385 if (gm_phy_read(hw, port, PHY_MARV_AUNE_LP)
2386 & PHY_M_AN_RF) {
2387 reason = "remote fault";
2388 goto failed;
2389 }
2390
2391 if (gm_phy_read(hw, port, PHY_MARV_1000T_STAT) & PHY_B_1000S_MSF) {
2392 reason = "master/slave fault";
2393 goto failed;
2394 }
2395
2396 if (!(phystat & PHY_M_PS_SPDUP_RES)) {
2397 reason = "speed/duplex";
2398 goto failed;
2399 }
2400
2401 skge->duplex = (phystat & PHY_M_PS_FULL_DUP)
2402 ? DUPLEX_FULL : DUPLEX_HALF;
2403 skge->speed = yukon_speed(hw, phystat);
2404
2405 /* We are using IEEE 802.3z/D5.0 Table 37-4 */
2406 switch (phystat & PHY_M_PS_PAUSE_MSK) {
2407 case PHY_M_PS_PAUSE_MSK:
2408 skge->flow_status = FLOW_STAT_SYMMETRIC;
2409 break;
2410 case PHY_M_PS_RX_P_EN:
2411 skge->flow_status = FLOW_STAT_REM_SEND;
2412 break;
2413 case PHY_M_PS_TX_P_EN:
2414 skge->flow_status = FLOW_STAT_LOC_SEND;
2415 break;
2416 default:
2417 skge->flow_status = FLOW_STAT_NONE;
2418 }
2419
2420 if (skge->flow_status == FLOW_STAT_NONE ||
2421 (skge->speed < SPEED_1000 && skge->duplex == DUPLEX_HALF))
2422 skge_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_OFF);
2423 else
2424 skge_write8(hw, SK_REG(port, GMAC_CTRL), GMC_PAUSE_ON);
2425 yukon_link_up(skge);
2426 return;
2427 }
2428
2429 if (istatus & PHY_M_IS_LSP_CHANGE)
2430 skge->speed = yukon_speed(hw, phystat);
2431
2432 if (istatus & PHY_M_IS_DUP_CHANGE)
2433 skge->duplex = (phystat & PHY_M_PS_FULL_DUP) ? DUPLEX_FULL : DUPLEX_HALF;
2434 if (istatus & PHY_M_IS_LST_CHANGE) {
2435 if (phystat & PHY_M_PS_LINK_UP)
2436 yukon_link_up(skge);
2437 else
2438 yukon_link_down(skge);
2439 }
2440 return;
2441 failed:
2442 printk(KERN_ERR PFX "%s: autonegotiation failed (%s)\n",
2443 skge->netdev->name, reason);
2444
2445 /* XXX restart autonegotiation? */
2446 }
2447
2448 static void skge_phy_reset(struct skge_port *skge)
2449 {
2450 struct skge_hw *hw = skge->hw;
2451 int port = skge->port;
2452 struct net_device *dev = hw->dev[port];
2453
2454 netif_stop_queue(skge->netdev);
2455 netif_carrier_off(skge->netdev);
2456
2457 spin_lock_bh(&hw->phy_lock);
2458 if (hw->chip_id == CHIP_ID_GENESIS) {
2459 genesis_reset(hw, port);
2460 genesis_mac_init(hw, port);
2461 } else {
2462 yukon_reset(hw, port);
2463 yukon_init(hw, port);
2464 }
2465 spin_unlock_bh(&hw->phy_lock);
2466
2467 skge_set_multicast(dev);
2468 }
2469
2470 /* Basic MII support */
2471 static int skge_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2472 {
2473 struct mii_ioctl_data *data = if_mii(ifr);
2474 struct skge_port *skge = netdev_priv(dev);
2475 struct skge_hw *hw = skge->hw;
2476 int err = -EOPNOTSUPP;
2477
2478 if (!netif_running(dev))
2479 return -ENODEV; /* Phy still in reset */
2480
2481 switch(cmd) {
2482 case SIOCGMIIPHY:
2483 data->phy_id = hw->phy_addr;
2484
2485 /* fallthru */
2486 case SIOCGMIIREG: {
2487 u16 val = 0;
2488 spin_lock_bh(&hw->phy_lock);
2489 if (hw->chip_id == CHIP_ID_GENESIS)
2490 err = __xm_phy_read(hw, skge->port, data->reg_num & 0x1f, &val);
2491 else
2492 err = __gm_phy_read(hw, skge->port, data->reg_num & 0x1f, &val);
2493 spin_unlock_bh(&hw->phy_lock);
2494 data->val_out = val;
2495 break;
2496 }
2497
2498 case SIOCSMIIREG:
2499 if (!capable(CAP_NET_ADMIN))
2500 return -EPERM;
2501
2502 spin_lock_bh(&hw->phy_lock);
2503 if (hw->chip_id == CHIP_ID_GENESIS)
2504 err = xm_phy_write(hw, skge->port, data->reg_num & 0x1f,
2505 data->val_in);
2506 else
2507 err = gm_phy_write(hw, skge->port, data->reg_num & 0x1f,
2508 data->val_in);
2509 spin_unlock_bh(&hw->phy_lock);
2510 break;
2511 }
2512 return err;
2513 }
2514
2515 static void skge_ramset(struct skge_hw *hw, u16 q, u32 start, size_t len)
2516 {
2517 u32 end;
2518
2519 start /= 8;
2520 len /= 8;
2521 end = start + len - 1;
2522
2523 skge_write8(hw, RB_ADDR(q, RB_CTRL), RB_RST_CLR);
2524 skge_write32(hw, RB_ADDR(q, RB_START), start);
2525 skge_write32(hw, RB_ADDR(q, RB_WP), start);
2526 skge_write32(hw, RB_ADDR(q, RB_RP), start);
2527 skge_write32(hw, RB_ADDR(q, RB_END), end);
2528
2529 if (q == Q_R1 || q == Q_R2) {
2530 /* Set thresholds on receive queue's */
2531 skge_write32(hw, RB_ADDR(q, RB_RX_UTPP),
2532 start + (2*len)/3);
2533 skge_write32(hw, RB_ADDR(q, RB_RX_LTPP),
2534 start + (len/3));
2535 } else {
2536 /* Enable store & forward on Tx queue's because
2537 * Tx FIFO is only 4K on Genesis and 1K on Yukon
2538 */
2539 skge_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_STFWD);
2540 }
2541
2542 skge_write8(hw, RB_ADDR(q, RB_CTRL), RB_ENA_OP_MD);
2543 }
2544
2545 /* Setup Bus Memory Interface */
2546 static void skge_qset(struct skge_port *skge, u16 q,
2547 const struct skge_element *e)
2548 {
2549 struct skge_hw *hw = skge->hw;
2550 u32 watermark = 0x600;
2551 u64 base = skge->dma + (e->desc - skge->mem);
2552
2553 /* optimization to reduce window on 32bit/33mhz */
2554 if ((skge_read16(hw, B0_CTST) & (CS_BUS_CLOCK | CS_BUS_SLOT_SZ)) == 0)
2555 watermark /= 2;
2556
2557 skge_write32(hw, Q_ADDR(q, Q_CSR), CSR_CLR_RESET);
2558 skge_write32(hw, Q_ADDR(q, Q_F), watermark);
2559 skge_write32(hw, Q_ADDR(q, Q_DA_H), (u32)(base >> 32));
2560 skge_write32(hw, Q_ADDR(q, Q_DA_L), (u32)base);
2561 }
2562
2563 static int skge_up(struct net_device *dev)
2564 {
2565 struct skge_port *skge = netdev_priv(dev);
2566 struct skge_hw *hw = skge->hw;
2567 int port = skge->port;
2568 u32 chunk, ram_addr;
2569 size_t rx_size, tx_size;
2570 int err;
2571
2572 if (!is_valid_ether_addr(dev->dev_addr))
2573 return -EINVAL;
2574
2575 if (netif_msg_ifup(skge))
2576 printk(KERN_INFO PFX "%s: enabling interface\n", dev->name);
2577
2578 if (dev->mtu > RX_BUF_SIZE)
2579 skge->rx_buf_size = dev->mtu + ETH_HLEN;
2580 else
2581 skge->rx_buf_size = RX_BUF_SIZE;
2582
2583
2584 rx_size = skge->rx_ring.count * sizeof(struct skge_rx_desc);
2585 tx_size = skge->tx_ring.count * sizeof(struct skge_tx_desc);
2586 skge->mem_size = tx_size + rx_size;
2587 skge->mem = pci_alloc_consistent(hw->pdev, skge->mem_size, &skge->dma);
2588 if (!skge->mem)
2589 return -ENOMEM;
2590
2591 BUG_ON(skge->dma & 7);
2592
2593 if ((u64)skge->dma >> 32 != ((u64) skge->dma + skge->mem_size) >> 32) {
2594 dev_err(&hw->pdev->dev, "pci_alloc_consistent region crosses 4G boundary\n");
2595 err = -EINVAL;
2596 goto free_pci_mem;
2597 }
2598
2599 memset(skge->mem, 0, skge->mem_size);
2600
2601 err = skge_ring_alloc(&skge->rx_ring, skge->mem, skge->dma);
2602 if (err)
2603 goto free_pci_mem;
2604
2605 err = skge_rx_fill(dev);
2606 if (err)
2607 goto free_rx_ring;
2608
2609 err = skge_ring_alloc(&skge->tx_ring, skge->mem + rx_size,
2610 skge->dma + rx_size);
2611 if (err)
2612 goto free_rx_ring;
2613
2614 /* Initialize MAC */
2615 spin_lock_bh(&hw->phy_lock);
2616 if (hw->chip_id == CHIP_ID_GENESIS)
2617 genesis_mac_init(hw, port);
2618 else
2619 yukon_mac_init(hw, port);
2620 spin_unlock_bh(&hw->phy_lock);
2621
2622 /* Configure RAMbuffers - equally between ports and tx/rx */
2623 chunk = (hw->ram_size - hw->ram_offset) / (hw->ports * 2);
2624 ram_addr = hw->ram_offset + 2 * chunk * port;
2625
2626 skge_ramset(hw, rxqaddr[port], ram_addr, chunk);
2627 skge_qset(skge, rxqaddr[port], skge->rx_ring.to_clean);
2628
2629 BUG_ON(skge->tx_ring.to_use != skge->tx_ring.to_clean);
2630 skge_ramset(hw, txqaddr[port], ram_addr+chunk, chunk);
2631 skge_qset(skge, txqaddr[port], skge->tx_ring.to_use);
2632
2633 /* Start receiver BMU */
2634 wmb();
2635 skge_write8(hw, Q_ADDR(rxqaddr[port], Q_CSR), CSR_START | CSR_IRQ_CL_F);
2636 skge_led(skge, LED_MODE_ON);
2637
2638 spin_lock_irq(&hw->hw_lock);
2639 hw->intr_mask |= portmask[port];
2640 skge_write32(hw, B0_IMSK, hw->intr_mask);
2641 spin_unlock_irq(&hw->hw_lock);
2642
2643 napi_enable(&skge->napi);
2644 return 0;
2645
2646 free_rx_ring:
2647 skge_rx_clean(skge);
2648 kfree(skge->rx_ring.start);
2649 free_pci_mem:
2650 pci_free_consistent(hw->pdev, skge->mem_size, skge->mem, skge->dma);
2651 skge->mem = NULL;
2652
2653 return err;
2654 }
2655
2656 /* stop receiver */
2657 static void skge_rx_stop(struct skge_hw *hw, int port)
2658 {
2659 skge_write8(hw, Q_ADDR(rxqaddr[port], Q_CSR), CSR_STOP);
2660 skge_write32(hw, RB_ADDR(port ? Q_R2 : Q_R1, RB_CTRL),
2661 RB_RST_SET|RB_DIS_OP_MD);
2662 skge_write32(hw, Q_ADDR(rxqaddr[port], Q_CSR), CSR_SET_RESET);
2663 }
2664
2665 static int skge_down(struct net_device *dev)
2666 {
2667 struct skge_port *skge = netdev_priv(dev);
2668 struct skge_hw *hw = skge->hw;
2669 int port = skge->port;
2670
2671 if (skge->mem == NULL)
2672 return 0;
2673
2674 if (netif_msg_ifdown(skge))
2675 printk(KERN_INFO PFX "%s: disabling interface\n", dev->name);
2676
2677 netif_tx_disable(dev);
2678
2679 if (hw->chip_id == CHIP_ID_GENESIS && hw->phy_type == SK_PHY_XMAC)
2680 del_timer_sync(&skge->link_timer);
2681
2682 napi_disable(&skge->napi);
2683 netif_carrier_off(dev);
2684
2685 spin_lock_irq(&hw->hw_lock);
2686 hw->intr_mask &= ~portmask[port];
2687 skge_write32(hw, B0_IMSK, hw->intr_mask);
2688 spin_unlock_irq(&hw->hw_lock);
2689
2690 skge_write8(skge->hw, SK_REG(skge->port, LNK_LED_REG), LED_OFF);
2691 if (hw->chip_id == CHIP_ID_GENESIS)
2692 genesis_stop(skge);
2693 else
2694 yukon_stop(skge);
2695
2696 /* Stop transmitter */
2697 skge_write8(hw, Q_ADDR(txqaddr[port], Q_CSR), CSR_STOP);
2698 skge_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL),
2699 RB_RST_SET|RB_DIS_OP_MD);
2700
2701
2702 /* Disable Force Sync bit and Enable Alloc bit */
2703 skge_write8(hw, SK_REG(port, TXA_CTRL),
2704 TXA_DIS_FSYNC | TXA_DIS_ALLOC | TXA_STOP_RC);
2705
2706 /* Stop Interval Timer and Limit Counter of Tx Arbiter */
2707 skge_write32(hw, SK_REG(port, TXA_ITI_INI), 0L);
2708 skge_write32(hw, SK_REG(port, TXA_LIM_INI), 0L);
2709
2710 /* Reset PCI FIFO */
2711 skge_write32(hw, Q_ADDR(txqaddr[port], Q_CSR), CSR_SET_RESET);
2712 skge_write32(hw, RB_ADDR(txqaddr[port], RB_CTRL), RB_RST_SET);
2713
2714 /* Reset the RAM Buffer async Tx queue */
2715 skge_write8(hw, RB_ADDR(port == 0 ? Q_XA1 : Q_XA2, RB_CTRL), RB_RST_SET);
2716
2717 skge_rx_stop(hw, port);
2718
2719 if (hw->chip_id == CHIP_ID_GENESIS) {
2720 skge_write8(hw, SK_REG(port, TX_MFF_CTRL2), MFF_RST_SET);
2721 skge_write8(hw, SK_REG(port, RX_MFF_CTRL2), MFF_RST_SET);
2722 } else {
2723 skge_write8(hw, SK_REG(port, RX_GMF_CTRL_T), GMF_RST_SET);
2724 skge_write8(hw, SK_REG(port, TX_GMF_CTRL_T), GMF_RST_SET);
2725 }
2726
2727 skge_led(skge, LED_MODE_OFF);
2728
2729 netif_tx_lock_bh(dev);
2730 skge_tx_clean(dev);
2731 netif_tx_unlock_bh(dev);
2732
2733 skge_rx_clean(skge);
2734
2735 kfree(skge->rx_ring.start);
2736 kfree(skge->tx_ring.start);
2737 pci_free_consistent(hw->pdev, skge->mem_size, skge->mem, skge->dma);
2738 skge->mem = NULL;
2739 return 0;
2740 }
2741
2742 static inline int skge_avail(const struct skge_ring *ring)
2743 {
2744 smp_mb();
2745 return ((ring->to_clean > ring->to_use) ? 0 : ring->count)
2746 + (ring->to_clean - ring->to_use) - 1;
2747 }
2748
2749 static int skge_xmit_frame(struct sk_buff *skb, struct net_device *dev)
2750 {
2751 struct skge_port *skge = netdev_priv(dev);
2752 struct skge_hw *hw = skge->hw;
2753 struct skge_element *e;
2754 struct skge_tx_desc *td;
2755 int i;
2756 u32 control, len;
2757 u64 map;
2758
2759 if (skb_padto(skb, ETH_ZLEN))
2760 return NETDEV_TX_OK;
2761
2762 if (unlikely(skge_avail(&skge->tx_ring) < skb_shinfo(skb)->nr_frags + 1))
2763 return NETDEV_TX_BUSY;
2764
2765 e = skge->tx_ring.to_use;
2766 td = e->desc;
2767 BUG_ON(td->control & BMU_OWN);
2768 e->skb = skb;
2769 len = skb_headlen(skb);
2770 map = pci_map_single(hw->pdev, skb->data, len, PCI_DMA_TODEVICE);
2771 pci_unmap_addr_set(e, mapaddr, map);
2772 pci_unmap_len_set(e, maplen, len);
2773
2774 td->dma_lo = map;
2775 td->dma_hi = map >> 32;
2776
2777 if (skb->ip_summed == CHECKSUM_PARTIAL) {
2778 const int offset = skb_transport_offset(skb);
2779
2780 /* This seems backwards, but it is what the sk98lin
2781 * does. Looks like hardware is wrong?
2782 */
2783 if (ipip_hdr(skb)->protocol == IPPROTO_UDP
2784 && hw->chip_rev == 0 && hw->chip_id == CHIP_ID_YUKON)
2785 control = BMU_TCP_CHECK;
2786 else
2787 control = BMU_UDP_CHECK;
2788
2789 td->csum_offs = 0;
2790 td->csum_start = offset;
2791 td->csum_write = offset + skb->csum_offset;
2792 } else
2793 control = BMU_CHECK;
2794
2795 if (!skb_shinfo(skb)->nr_frags) /* single buffer i.e. no fragments */
2796 control |= BMU_EOF| BMU_IRQ_EOF;
2797 else {
2798 struct skge_tx_desc *tf = td;
2799
2800 control |= BMU_STFWD;
2801 for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
2802 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
2803
2804 map = pci_map_page(hw->pdev, frag->page, frag->page_offset,
2805 frag->size, PCI_DMA_TODEVICE);
2806
2807 e = e->next;
2808 e->skb = skb;
2809 tf = e->desc;
2810 BUG_ON(tf->control & BMU_OWN);
2811
2812 tf->dma_lo = map;
2813 tf->dma_hi = (u64) map >> 32;
2814 pci_unmap_addr_set(e, mapaddr, map);
2815 pci_unmap_len_set(e, maplen, frag->size);
2816
2817 tf->control = BMU_OWN | BMU_SW | control | frag->size;
2818 }
2819 tf->control |= BMU_EOF | BMU_IRQ_EOF;
2820 }
2821 /* Make sure all the descriptors written */
2822 wmb();
2823 td->control = BMU_OWN | BMU_SW | BMU_STF | control | len;
2824 wmb();
2825
2826 skge_write8(hw, Q_ADDR(txqaddr[skge->port], Q_CSR), CSR_START);
2827
2828 if (unlikely(netif_msg_tx_queued(skge)))
2829 printk(KERN_DEBUG "%s: tx queued, slot %td, len %d\n",
2830 dev->name, e - skge->tx_ring.start, skb->len);
2831
2832 skge->tx_ring.to_use = e->next;
2833 smp_wmb();
2834
2835 if (skge_avail(&skge->tx_ring) <= TX_LOW_WATER) {
2836 pr_debug("%s: transmit queue full\n", dev->name);
2837 netif_stop_queue(dev);
2838 }
2839
2840 return NETDEV_TX_OK;
2841 }
2842
2843
2844 /* Free resources associated with this reing element */
2845 static void skge_tx_free(struct skge_port *skge, struct skge_element *e,
2846 u32 control)
2847 {
2848 struct pci_dev *pdev = skge->hw->pdev;
2849
2850 /* skb header vs. fragment */
2851 if (control & BMU_STF)
2852 pci_unmap_single(pdev, pci_unmap_addr(e, mapaddr),
2853 pci_unmap_len(e, maplen),
2854 PCI_DMA_TODEVICE);
2855 else
2856 pci_unmap_page(pdev, pci_unmap_addr(e, mapaddr),
2857 pci_unmap_len(e, maplen),
2858 PCI_DMA_TODEVICE);
2859
2860 if (control & BMU_EOF) {
2861 if (unlikely(netif_msg_tx_done(skge)))
2862 printk(KERN_DEBUG PFX "%s: tx done slot %td\n",
2863 skge->netdev->name, e - skge->tx_ring.start);
2864
2865 dev_kfree_skb(e->skb);
2866 }
2867 }
2868
2869 /* Free all buffers in transmit ring */
2870 static void skge_tx_clean(struct net_device *dev)
2871 {
2872 struct skge_port *skge = netdev_priv(dev);
2873 struct skge_element *e;
2874
2875 for (e = skge->tx_ring.to_clean; e != skge->tx_ring.to_use; e = e->next) {
2876 struct skge_tx_desc *td = e->desc;
2877 skge_tx_free(skge, e, td->control);
2878 td->control = 0;
2879 }
2880
2881 skge->tx_ring.to_clean = e;
2882 }
2883
2884 static void skge_tx_timeout(struct net_device *dev)
2885 {
2886 struct skge_port *skge = netdev_priv(dev);
2887
2888 if (netif_msg_timer(skge))
2889 printk(KERN_DEBUG PFX "%s: tx timeout\n", dev->name);
2890
2891 skge_write8(skge->hw, Q_ADDR(txqaddr[skge->port], Q_CSR), CSR_STOP);
2892 skge_tx_clean(dev);
2893 netif_wake_queue(dev);
2894 }
2895
2896 static int skge_change_mtu(struct net_device *dev, int new_mtu)
2897 {
2898 int err;
2899
2900 if (new_mtu < ETH_ZLEN || new_mtu > ETH_JUMBO_MTU)
2901 return -EINVAL;
2902
2903 if (!netif_running(dev)) {
2904 dev->mtu = new_mtu;
2905 return 0;
2906 }
2907
2908 skge_down(dev);
2909
2910 dev->mtu = new_mtu;
2911
2912 err = skge_up(dev);
2913 if (err)
2914 dev_close(dev);
2915
2916 return err;
2917 }
2918
2919 static const u8 pause_mc_addr[ETH_ALEN] = { 0x1, 0x80, 0xc2, 0x0, 0x0, 0x1 };
2920
2921 static void genesis_add_filter(u8 filter[8], const u8 *addr)
2922 {
2923 u32 crc, bit;
2924
2925 crc = ether_crc_le(ETH_ALEN, addr);
2926 bit = ~crc & 0x3f;
2927 filter[bit/8] |= 1 << (bit%8);
2928 }
2929
2930 static void genesis_set_multicast(struct net_device *dev)
2931 {
2932 struct skge_port *skge = netdev_priv(dev);
2933 struct skge_hw *hw = skge->hw;
2934 int port = skge->port;
2935 int i, count = dev->mc_count;
2936 struct dev_mc_list *list = dev->mc_list;
2937 u32 mode;
2938 u8 filter[8];
2939
2940 mode = xm_read32(hw, port, XM_MODE);
2941 mode |= XM_MD_ENA_HASH;
2942 if (dev->flags & IFF_PROMISC)
2943 mode |= XM_MD_ENA_PROM;
2944 else
2945 mode &= ~XM_MD_ENA_PROM;
2946
2947 if (dev->flags & IFF_ALLMULTI)
2948 memset(filter, 0xff, sizeof(filter));
2949 else {
2950 memset(filter, 0, sizeof(filter));
2951
2952 if (skge->flow_status == FLOW_STAT_REM_SEND
2953 || skge->flow_status == FLOW_STAT_SYMMETRIC)
2954 genesis_add_filter(filter, pause_mc_addr);
2955
2956 for (i = 0; list && i < count; i++, list = list->next)
2957 genesis_add_filter(filter, list->dmi_addr);
2958 }
2959
2960 xm_write32(hw, port, XM_MODE, mode);
2961 xm_outhash(hw, port, XM_HSM, filter);
2962 }
2963
2964 static void yukon_add_filter(u8 filter[8], const u8 *addr)
2965 {
2966 u32 bit = ether_crc(ETH_ALEN, addr) & 0x3f;
2967 filter[bit/8] |= 1 << (bit%8);
2968 }
2969
2970 static void yukon_set_multicast(struct net_device *dev)
2971 {
2972 struct skge_port *skge = netdev_priv(dev);
2973 struct skge_hw *hw = skge->hw;
2974 int port = skge->port;
2975 struct dev_mc_list *list = dev->mc_list;
2976 int rx_pause = (skge->flow_status == FLOW_STAT_REM_SEND
2977 || skge->flow_status == FLOW_STAT_SYMMETRIC);
2978 u16 reg;
2979 u8 filter[8];
2980
2981 memset(filter, 0, sizeof(filter));
2982
2983 reg = gma_read16(hw, port, GM_RX_CTRL);
2984 reg |= GM_RXCR_UCF_ENA;
2985
2986 if (dev->flags & IFF_PROMISC) /* promiscuous */
2987 reg &= ~(GM_RXCR_UCF_ENA | GM_RXCR_MCF_ENA);
2988 else if (dev->flags & IFF_ALLMULTI) /* all multicast */
2989 memset(filter, 0xff, sizeof(filter));
2990 else if (dev->mc_count == 0 && !rx_pause)/* no multicast */
2991 reg &= ~GM_RXCR_MCF_ENA;
2992 else {
2993 int i;
2994 reg |= GM_RXCR_MCF_ENA;
2995
2996 if (rx_pause)
2997 yukon_add_filter(filter, pause_mc_addr);
2998
2999 for (i = 0; list && i < dev->mc_count; i++, list = list->next)
3000 yukon_add_filter(filter, list->dmi_addr);
3001 }
3002
3003
3004 gma_write16(hw, port, GM_MC_ADDR_H1,
3005 (u16)filter[0] | ((u16)filter[1] << 8));
3006 gma_write16(hw, port, GM_MC_ADDR_H2,
3007 (u16)filter[2] | ((u16)filter[3] << 8));
3008 gma_write16(hw, port, GM_MC_ADDR_H3,
3009 (u16)filter[4] | ((u16)filter[5] << 8));
3010 gma_write16(hw, port, GM_MC_ADDR_H4,
3011 (u16)filter[6] | ((u16)filter[7] << 8));
3012
3013 gma_write16(hw, port, GM_RX_CTRL, reg);
3014 }
3015
3016 static inline u16 phy_length(const struct skge_hw *hw, u32 status)
3017 {
3018 if (hw->chip_id == CHIP_ID_GENESIS)
3019 return status >> XMR_FS_LEN_SHIFT;
3020 else
3021 return status >> GMR_FS_LEN_SHIFT;
3022 }
3023
3024 static inline int bad_phy_status(const struct skge_hw *hw, u32 status)
3025 {
3026 if (hw->chip_id == CHIP_ID_GENESIS)
3027 return (status & (XMR_FS_ERR | XMR_FS_2L_VLAN)) != 0;
3028 else
3029 return (status & GMR_FS_ANY_ERR) ||
3030 (status & GMR_FS_RX_OK) == 0;
3031 }
3032
3033 static void skge_set_multicast(struct net_device *dev)
3034 {
3035 struct skge_port *skge = netdev_priv(dev);
3036 struct skge_hw *hw = skge->hw;
3037
3038 if (hw->chip_id == CHIP_ID_GENESIS)
3039 genesis_set_multicast(dev);
3040 else
3041 yukon_set_multicast(dev);
3042
3043 }
3044
3045
3046 /* Get receive buffer from descriptor.
3047 * Handles copy of small buffers and reallocation failures
3048 */
3049 static struct sk_buff *skge_rx_get(struct net_device *dev,
3050 struct skge_element *e,
3051 u32 control, u32 status, u16 csum)
3052 {
3053 struct skge_port *skge = netdev_priv(dev);
3054 struct sk_buff *skb;
3055 u16 len = control & BMU_BBC;
3056
3057 if (unlikely(netif_msg_rx_status(skge)))
3058 printk(KERN_DEBUG PFX "%s: rx slot %td status 0x%x len %d\n",
3059 dev->name, e - skge->rx_ring.start,
3060 status, len);
3061
3062 if (len > skge->rx_buf_size)
3063 goto error;
3064
3065 if ((control & (BMU_EOF|BMU_STF)) != (BMU_STF|BMU_EOF))
3066 goto error;
3067
3068 if (bad_phy_status(skge->hw, status))
3069 goto error;
3070
3071 if (phy_length(skge->hw, status) != len)
3072 goto error;
3073
3074 if (len < RX_COPY_THRESHOLD) {
3075 skb = netdev_alloc_skb(dev, len + 2);
3076 if (!skb)
3077 goto resubmit;
3078
3079 skb_reserve(skb, 2);
3080 pci_dma_sync_single_for_cpu(skge->hw->pdev,
3081 pci_unmap_addr(e, mapaddr),
3082 len, PCI_DMA_FROMDEVICE);
3083 skb_copy_from_linear_data(e->skb, skb->data, len);
3084 pci_dma_sync_single_for_device(skge->hw->pdev,
3085 pci_unmap_addr(e, mapaddr),
3086 len, PCI_DMA_FROMDEVICE);
3087 skge_rx_reuse(e, skge->rx_buf_size);
3088 } else {
3089 struct sk_buff *nskb;
3090 nskb = netdev_alloc_skb(dev, skge->rx_buf_size + NET_IP_ALIGN);
3091 if (!nskb)
3092 goto resubmit;
3093
3094 skb_reserve(nskb, NET_IP_ALIGN);
3095 pci_unmap_single(skge->hw->pdev,
3096 pci_unmap_addr(e, mapaddr),
3097 pci_unmap_len(e, maplen),
3098 PCI_DMA_FROMDEVICE);
3099 skb = e->skb;
3100 prefetch(skb->data);
3101 skge_rx_setup(skge, e, nskb, skge->rx_buf_size);
3102 }
3103
3104 skb_put(skb, len);
3105 if (skge->rx_csum) {
3106 skb->csum = csum;
3107 skb->ip_summed = CHECKSUM_COMPLETE;
3108 }
3109
3110 skb->protocol = eth_type_trans(skb, dev);
3111
3112 return skb;
3113 error:
3114
3115 if (netif_msg_rx_err(skge))
3116 printk(KERN_DEBUG PFX "%s: rx err, slot %td control 0x%x status 0x%x\n",
3117 dev->name, e - skge->rx_ring.start,
3118 control, status);
3119
3120 if (skge->hw->chip_id == CHIP_ID_GENESIS) {
3121 if (status & (XMR_FS_RUNT|XMR_FS_LNG_ERR))
3122 dev->stats.rx_length_errors++;
3123 if (status & XMR_FS_FRA_ERR)
3124 dev->stats.rx_frame_errors++;
3125 if (status & XMR_FS_FCS_ERR)
3126 dev->stats.rx_crc_errors++;
3127 } else {
3128 if (status & (GMR_FS_LONG_ERR|GMR_FS_UN_SIZE))
3129 dev->stats.rx_length_errors++;
3130 if (status & GMR_FS_FRAGMENT)
3131 dev->stats.rx_frame_errors++;
3132 if (status & GMR_FS_CRC_ERR)
3133 dev->stats.rx_crc_errors++;
3134 }
3135
3136 resubmit:
3137 skge_rx_reuse(e, skge->rx_buf_size);
3138 return NULL;
3139 }
3140
3141 /* Free all buffers in Tx ring which are no longer owned by device */
3142 static void skge_tx_done(struct net_device *dev)
3143 {
3144 struct skge_port *skge = netdev_priv(dev);
3145 struct skge_ring *ring = &skge->tx_ring;
3146 struct skge_element *e;
3147
3148 skge_write8(skge->hw, Q_ADDR(txqaddr[skge->port], Q_CSR), CSR_IRQ_CL_F);
3149
3150 for (e = ring->to_clean; e != ring->to_use; e = e->next) {
3151 u32 control = ((const struct skge_tx_desc *) e->desc)->control;
3152
3153 if (control & BMU_OWN)
3154 break;
3155
3156 skge_tx_free(skge, e, control);
3157 }
3158 skge->tx_ring.to_clean = e;
3159
3160 /* Can run lockless until we need to synchronize to restart queue. */
3161 smp_mb();
3162
3163 if (unlikely(netif_queue_stopped(dev) &&
3164 skge_avail(&skge->tx_ring) > TX_LOW_WATER)) {
3165 netif_tx_lock(dev);
3166 if (unlikely(netif_queue_stopped(dev) &&
3167 skge_avail(&skge->tx_ring) > TX_LOW_WATER)) {
3168 netif_wake_queue(dev);
3169
3170 }
3171 netif_tx_unlock(dev);
3172 }
3173 }
3174
3175 static int skge_poll(struct napi_struct *napi, int to_do)
3176 {
3177 struct skge_port *skge = container_of(napi, struct skge_port, napi);
3178 struct net_device *dev = skge->netdev;
3179 struct skge_hw *hw = skge->hw;
3180 struct skge_ring *ring = &skge->rx_ring;
3181 struct skge_element *e;
3182 int work_done = 0;
3183
3184 skge_tx_done(dev);
3185
3186 skge_write8(hw, Q_ADDR(rxqaddr[skge->port], Q_CSR), CSR_IRQ_CL_F);
3187
3188 for (e = ring->to_clean; prefetch(e->next), work_done < to_do; e = e->next) {
3189 struct skge_rx_desc *rd = e->desc;
3190 struct sk_buff *skb;
3191 u32 control;
3192
3193 rmb();
3194 control = rd->control;
3195 if (control & BMU_OWN)
3196 break;
3197
3198 skb = skge_rx_get(dev, e, control, rd->status, rd->csum2);
3199 if (likely(skb)) {
3200 netif_receive_skb(skb);
3201
3202 ++work_done;
3203 }
3204 }
3205 ring->to_clean = e;
3206
3207 /* restart receiver */
3208 wmb();
3209 skge_write8(hw, Q_ADDR(rxqaddr[skge->port], Q_CSR), CSR_START);
3210
3211 if (work_done < to_do) {
3212 unsigned long flags;
3213
3214 spin_lock_irqsave(&hw->hw_lock, flags);
3215 __napi_complete(napi);
3216 hw->intr_mask |= napimask[skge->port];
3217 skge_write32(hw, B0_IMSK, hw->intr_mask);
3218 skge_read32(hw, B0_IMSK);
3219 spin_unlock_irqrestore(&hw->hw_lock, flags);
3220 }
3221
3222 return work_done;
3223 }
3224
3225 /* Parity errors seem to happen when Genesis is connected to a switch
3226 * with no other ports present. Heartbeat error??
3227 */
3228 static void skge_mac_parity(struct skge_hw *hw, int port)
3229 {
3230 struct net_device *dev = hw->dev[port];
3231
3232 ++dev->stats.tx_heartbeat_errors;
3233
3234 if (hw->chip_id == CHIP_ID_GENESIS)
3235 skge_write16(hw, SK_REG(port, TX_MFF_CTRL1),
3236 MFF_CLR_PERR);
3237 else
3238 /* HW-Bug #8: cleared by GMF_CLI_TX_FC instead of GMF_CLI_TX_PE */
3239 skge_write8(hw, SK_REG(port, TX_GMF_CTRL_T),
3240 (hw->chip_id == CHIP_ID_YUKON && hw->chip_rev == 0)
3241 ? GMF_CLI_TX_FC : GMF_CLI_TX_PE);
3242 }
3243
3244 static void skge_mac_intr(struct skge_hw *hw, int port)
3245 {
3246 if (hw->chip_id == CHIP_ID_GENESIS)
3247 genesis_mac_intr(hw, port);
3248 else
3249 yukon_mac_intr(hw, port);
3250 }
3251
3252 /* Handle device specific framing and timeout interrupts */
3253 static void skge_error_irq(struct skge_hw *hw)
3254 {
3255 struct pci_dev *pdev = hw->pdev;
3256 u32 hwstatus = skge_read32(hw, B0_HWE_ISRC);
3257
3258 if (hw->chip_id == CHIP_ID_GENESIS) {
3259 /* clear xmac errors */
3260 if (hwstatus & (IS_NO_STAT_M1|IS_NO_TIST_M1))
3261 skge_write16(hw, RX_MFF_CTRL1, MFF_CLR_INSTAT);
3262 if (hwstatus & (IS_NO_STAT_M2|IS_NO_TIST_M2))
3263 skge_write16(hw, RX_MFF_CTRL2, MFF_CLR_INSTAT);
3264 } else {
3265 /* Timestamp (unused) overflow */
3266 if (hwstatus & IS_IRQ_TIST_OV)
3267 skge_write8(hw, GMAC_TI_ST_CTRL, GMT_ST_CLR_IRQ);
3268 }
3269
3270 if (hwstatus & IS_RAM_RD_PAR) {
3271 dev_err(&pdev->dev, "Ram read data parity error\n");
3272 skge_write16(hw, B3_RI_CTRL, RI_CLR_RD_PERR);
3273 }
3274
3275 if (hwstatus & IS_RAM_WR_PAR) {
3276 dev_err(&pdev->dev, "Ram write data parity error\n");
3277 skge_write16(hw, B3_RI_CTRL, RI_CLR_WR_PERR);
3278 }
3279
3280 if (hwstatus & IS_M1_PAR_ERR)
3281 skge_mac_parity(hw, 0);
3282
3283 if (hwstatus & IS_M2_PAR_ERR)
3284 skge_mac_parity(hw, 1);
3285
3286 if (hwstatus & IS_R1_PAR_ERR) {
3287 dev_err(&pdev->dev, "%s: receive queue parity error\n",
3288 hw->dev[0]->name);
3289 skge_write32(hw, B0_R1_CSR, CSR_IRQ_CL_P);
3290 }
3291
3292 if (hwstatus & IS_R2_PAR_ERR) {
3293 dev_err(&pdev->dev, "%s: receive queue parity error\n",
3294 hw->dev[1]->name);
3295 skge_write32(hw, B0_R2_CSR, CSR_IRQ_CL_P);
3296 }
3297
3298 if (hwstatus & (IS_IRQ_MST_ERR|IS_IRQ_STAT)) {
3299 u16 pci_status, pci_cmd;
3300
3301 pci_read_config_word(pdev, PCI_COMMAND, &pci_cmd);
3302 pci_read_config_word(pdev, PCI_STATUS, &pci_status);
3303
3304 dev_err(&pdev->dev, "PCI error cmd=%#x status=%#x\n",
3305 pci_cmd, pci_status);
3306
3307 /* Write the error bits back to clear them. */
3308 pci_status &= PCI_STATUS_ERROR_BITS;
3309 skge_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
3310 pci_write_config_word(pdev, PCI_COMMAND,
3311 pci_cmd | PCI_COMMAND_SERR | PCI_COMMAND_PARITY);
3312 pci_write_config_word(pdev, PCI_STATUS, pci_status);
3313 skge_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
3314
3315 /* if error still set then just ignore it */
3316 hwstatus = skge_read32(hw, B0_HWE_ISRC);
3317 if (hwstatus & IS_IRQ_STAT) {
3318 dev_warn(&hw->pdev->dev, "unable to clear error (so ignoring them)\n");
3319 hw->intr_mask &= ~IS_HW_ERR;
3320 }
3321 }
3322 }
3323
3324 /*
3325 * Interrupt from PHY are handled in tasklet (softirq)
3326 * because accessing phy registers requires spin wait which might
3327 * cause excess interrupt latency.
3328 */
3329 static void skge_extirq(unsigned long arg)
3330 {
3331 struct skge_hw *hw = (struct skge_hw *) arg;
3332 int port;
3333
3334 for (port = 0; port < hw->ports; port++) {
3335 struct net_device *dev = hw->dev[port];
3336
3337 if (netif_running(dev)) {
3338 struct skge_port *skge = netdev_priv(dev);
3339
3340 spin_lock(&hw->phy_lock);
3341 if (hw->chip_id != CHIP_ID_GENESIS)
3342 yukon_phy_intr(skge);
3343 else if (hw->phy_type == SK_PHY_BCOM)
3344 bcom_phy_intr(skge);
3345 spin_unlock(&hw->phy_lock);
3346 }
3347 }
3348
3349 spin_lock_irq(&hw->hw_lock);
3350 hw->intr_mask |= IS_EXT_REG;
3351 skge_write32(hw, B0_IMSK, hw->intr_mask);
3352 skge_read32(hw, B0_IMSK);
3353 spin_unlock_irq(&hw->hw_lock);
3354 }
3355
3356 static irqreturn_t skge_intr(int irq, void *dev_id)
3357 {
3358 struct skge_hw *hw = dev_id;
3359 u32 status;
3360 int handled = 0;
3361
3362 spin_lock(&hw->hw_lock);
3363 /* Reading this register masks IRQ */
3364 status = skge_read32(hw, B0_SP_ISRC);
3365 if (status == 0 || status == ~0)
3366 goto out;
3367
3368 handled = 1;
3369 status &= hw->intr_mask;
3370 if (status & IS_EXT_REG) {
3371 hw->intr_mask &= ~IS_EXT_REG;
3372 tasklet_schedule(&hw->phy_task);
3373 }
3374
3375 if (status & (IS_XA1_F|IS_R1_F)) {
3376 struct skge_port *skge = netdev_priv(hw->dev[0]);
3377 hw->intr_mask &= ~(IS_XA1_F|IS_R1_F);
3378 napi_schedule(&skge->napi);
3379 }
3380
3381 if (status & IS_PA_TO_TX1)
3382 skge_write16(hw, B3_PA_CTRL, PA_CLR_TO_TX1);
3383
3384 if (status & IS_PA_TO_RX1) {
3385 ++hw->dev[0]->stats.rx_over_errors;
3386 skge_write16(hw, B3_PA_CTRL, PA_CLR_TO_RX1);
3387 }
3388
3389
3390 if (status & IS_MAC1)
3391 skge_mac_intr(hw, 0);
3392
3393 if (hw->dev[1]) {
3394 struct skge_port *skge = netdev_priv(hw->dev[1]);
3395
3396 if (status & (IS_XA2_F|IS_R2_F)) {
3397 hw->intr_mask &= ~(IS_XA2_F|IS_R2_F);
3398 napi_schedule(&skge->napi);
3399 }
3400
3401 if (status & IS_PA_TO_RX2) {
3402 ++hw->dev[1]->stats.rx_over_errors;
3403 skge_write16(hw, B3_PA_CTRL, PA_CLR_TO_RX2);
3404 }
3405
3406 if (status & IS_PA_TO_TX2)
3407 skge_write16(hw, B3_PA_CTRL, PA_CLR_TO_TX2);
3408
3409 if (status & IS_MAC2)
3410 skge_mac_intr(hw, 1);
3411 }
3412
3413 if (status & IS_HW_ERR)
3414 skge_error_irq(hw);
3415
3416 skge_write32(hw, B0_IMSK, hw->intr_mask);
3417 skge_read32(hw, B0_IMSK);
3418 out:
3419 spin_unlock(&hw->hw_lock);
3420
3421 return IRQ_RETVAL(handled);
3422 }
3423
3424 #ifdef CONFIG_NET_POLL_CONTROLLER
3425 static void skge_netpoll(struct net_device *dev)
3426 {
3427 struct skge_port *skge = netdev_priv(dev);
3428
3429 disable_irq(dev->irq);
3430 skge_intr(dev->irq, skge->hw);
3431 enable_irq(dev->irq);
3432 }
3433 #endif
3434
3435 static int skge_set_mac_address(struct net_device *dev, void *p)
3436 {
3437 struct skge_port *skge = netdev_priv(dev);
3438 struct skge_hw *hw = skge->hw;
3439 unsigned port = skge->port;
3440 const struct sockaddr *addr = p;
3441 u16 ctrl;
3442
3443 if (!is_valid_ether_addr(addr->sa_data))
3444 return -EADDRNOTAVAIL;
3445
3446 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
3447
3448 if (!netif_running(dev)) {
3449 memcpy_toio(hw->regs + B2_MAC_1 + port*8, dev->dev_addr, ETH_ALEN);
3450 memcpy_toio(hw->regs + B2_MAC_2 + port*8, dev->dev_addr, ETH_ALEN);
3451 } else {
3452 /* disable Rx */
3453 spin_lock_bh(&hw->phy_lock);
3454 ctrl = gma_read16(hw, port, GM_GP_CTRL);
3455 gma_write16(hw, port, GM_GP_CTRL, ctrl & ~GM_GPCR_RX_ENA);
3456
3457 memcpy_toio(hw->regs + B2_MAC_1 + port*8, dev->dev_addr, ETH_ALEN);
3458 memcpy_toio(hw->regs + B2_MAC_2 + port*8, dev->dev_addr, ETH_ALEN);
3459
3460 if (hw->chip_id == CHIP_ID_GENESIS)
3461 xm_outaddr(hw, port, XM_SA, dev->dev_addr);
3462 else {
3463 gma_set_addr(hw, port, GM_SRC_ADDR_1L, dev->dev_addr);
3464 gma_set_addr(hw, port, GM_SRC_ADDR_2L, dev->dev_addr);
3465 }
3466
3467 gma_write16(hw, port, GM_GP_CTRL, ctrl);
3468 spin_unlock_bh(&hw->phy_lock);
3469 }
3470
3471 return 0;
3472 }
3473
3474 static const struct {
3475 u8 id;
3476 const char *name;
3477 } skge_chips[] = {
3478 { CHIP_ID_GENESIS, "Genesis" },
3479 { CHIP_ID_YUKON, "Yukon" },
3480 { CHIP_ID_YUKON_LITE, "Yukon-Lite"},
3481 { CHIP_ID_YUKON_LP, "Yukon-LP"},
3482 };
3483
3484 static const char *skge_board_name(const struct skge_hw *hw)
3485 {
3486 int i;
3487 static char buf[16];
3488
3489 for (i = 0; i < ARRAY_SIZE(skge_chips); i++)
3490 if (skge_chips[i].id == hw->chip_id)
3491 return skge_chips[i].name;
3492
3493 snprintf(buf, sizeof buf, "chipid 0x%x", hw->chip_id);
3494 return buf;
3495 }
3496
3497
3498 /*
3499 * Setup the board data structure, but don't bring up
3500 * the port(s)
3501 */
3502 static int skge_reset(struct skge_hw *hw)
3503 {
3504 u32 reg;
3505 u16 ctst, pci_status;
3506 u8 t8, mac_cfg, pmd_type;
3507 int i;
3508
3509 ctst = skge_read16(hw, B0_CTST);
3510
3511 /* do a SW reset */
3512 skge_write8(hw, B0_CTST, CS_RST_SET);
3513 skge_write8(hw, B0_CTST, CS_RST_CLR);
3514
3515 /* clear PCI errors, if any */
3516 skge_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
3517 skge_write8(hw, B2_TST_CTRL2, 0);
3518
3519 pci_read_config_word(hw->pdev, PCI_STATUS, &pci_status);
3520 pci_write_config_word(hw->pdev, PCI_STATUS,
3521 pci_status | PCI_STATUS_ERROR_BITS);
3522 skge_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
3523 skge_write8(hw, B0_CTST, CS_MRST_CLR);
3524
3525 /* restore CLK_RUN bits (for Yukon-Lite) */
3526 skge_write16(hw, B0_CTST,
3527 ctst & (CS_CLK_RUN_HOT|CS_CLK_RUN_RST|CS_CLK_RUN_ENA));
3528
3529 hw->chip_id = skge_read8(hw, B2_CHIP_ID);
3530 hw->phy_type = skge_read8(hw, B2_E_1) & 0xf;
3531 pmd_type = skge_read8(hw, B2_PMD_TYP);
3532 hw->copper = (pmd_type == 'T' || pmd_type == '1');
3533
3534 switch (hw->chip_id) {
3535 case CHIP_ID_GENESIS:
3536 switch (hw->phy_type) {
3537 case SK_PHY_XMAC:
3538 hw->phy_addr = PHY_ADDR_XMAC;
3539 break;
3540 case SK_PHY_BCOM:
3541 hw->phy_addr = PHY_ADDR_BCOM;
3542 break;
3543 default:
3544 dev_err(&hw->pdev->dev, "unsupported phy type 0x%x\n",
3545 hw->phy_type);
3546 return -EOPNOTSUPP;
3547 }
3548 break;
3549
3550 case CHIP_ID_YUKON:
3551 case CHIP_ID_YUKON_LITE:
3552 case CHIP_ID_YUKON_LP:
3553 if (hw->phy_type < SK_PHY_MARV_COPPER && pmd_type != 'S')
3554 hw->copper = 1;
3555
3556 hw->phy_addr = PHY_ADDR_MARV;
3557 break;
3558
3559 default:
3560 dev_err(&hw->pdev->dev, "unsupported chip type 0x%x\n",
3561 hw->chip_id);
3562 return -EOPNOTSUPP;
3563 }
3564
3565 mac_cfg = skge_read8(hw, B2_MAC_CFG);
3566 hw->ports = (mac_cfg & CFG_SNG_MAC) ? 1 : 2;
3567 hw->chip_rev = (mac_cfg & CFG_CHIP_R_MSK) >> 4;
3568
3569 /* read the adapters RAM size */
3570 t8 = skge_read8(hw, B2_E_0);
3571 if (hw->chip_id == CHIP_ID_GENESIS) {
3572 if (t8 == 3) {
3573 /* special case: 4 x 64k x 36, offset = 0x80000 */
3574 hw->ram_size = 0x100000;
3575 hw->ram_offset = 0x80000;
3576 } else
3577 hw->ram_size = t8 * 512;
3578 }
3579 else if (t8 == 0)
3580 hw->ram_size = 0x20000;
3581 else
3582 hw->ram_size = t8 * 4096;
3583
3584 hw->intr_mask = IS_HW_ERR;
3585
3586 /* Use PHY IRQ for all but fiber based Genesis board */
3587 if (!(hw->chip_id == CHIP_ID_GENESIS && hw->phy_type == SK_PHY_XMAC))
3588 hw->intr_mask |= IS_EXT_REG;
3589
3590 if (hw->chip_id == CHIP_ID_GENESIS)
3591 genesis_init(hw);
3592 else {
3593 /* switch power to VCC (WA for VAUX problem) */
3594 skge_write8(hw, B0_POWER_CTRL,
3595 PC_VAUX_ENA | PC_VCC_ENA | PC_VAUX_OFF | PC_VCC_ON);
3596
3597 /* avoid boards with stuck Hardware error bits */
3598 if ((skge_read32(hw, B0_ISRC) & IS_HW_ERR) &&
3599 (skge_read32(hw, B0_HWE_ISRC) & IS_IRQ_SENSOR)) {
3600 dev_warn(&hw->pdev->dev, "stuck hardware sensor bit\n");
3601 hw->intr_mask &= ~IS_HW_ERR;
3602 }
3603
3604 /* Clear PHY COMA */
3605 skge_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_ON);
3606 pci_read_config_dword(hw->pdev, PCI_DEV_REG1, &reg);
3607 reg &= ~PCI_PHY_COMA;
3608 pci_write_config_dword(hw->pdev, PCI_DEV_REG1, reg);
3609 skge_write8(hw, B2_TST_CTRL1, TST_CFG_WRITE_OFF);
3610
3611
3612 for (i = 0; i < hw->ports; i++) {
3613 skge_write16(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_SET);
3614 skge_write16(hw, SK_REG(i, GMAC_LINK_CTRL), GMLC_RST_CLR);
3615 }
3616 }
3617
3618 /* turn off hardware timer (unused) */
3619 skge_write8(hw, B2_TI_CTRL, TIM_STOP);
3620 skge_write8(hw, B2_TI_CTRL, TIM_CLR_IRQ);
3621 skge_write8(hw, B0_LED, LED_STAT_ON);
3622
3623 /* enable the Tx Arbiters */
3624 for (i = 0; i < hw->ports; i++)
3625 skge_write8(hw, SK_REG(i, TXA_CTRL), TXA_ENA_ARB);
3626
3627 /* Initialize ram interface */
3628 skge_write16(hw, B3_RI_CTRL, RI_RST_CLR);
3629
3630 skge_write8(hw, B3_RI_WTO_R1, SK_RI_TO_53);
3631 skge_write8(hw, B3_RI_WTO_XA1, SK_RI_TO_53);
3632 skge_write8(hw, B3_RI_WTO_XS1, SK_RI_TO_53);
3633 skge_write8(hw, B3_RI_RTO_R1, SK_RI_TO_53);
3634 skge_write8(hw, B3_RI_RTO_XA1, SK_RI_TO_53);
3635 skge_write8(hw, B3_RI_RTO_XS1, SK_RI_TO_53);
3636 skge_write8(hw, B3_RI_WTO_R2, SK_RI_TO_53);
3637 skge_write8(hw, B3_RI_WTO_XA2, SK_RI_TO_53);
3638 skge_write8(hw, B3_RI_WTO_XS2, SK_RI_TO_53);
3639 skge_write8(hw, B3_RI_RTO_R2, SK_RI_TO_53);
3640 skge_write8(hw, B3_RI_RTO_XA2, SK_RI_TO_53);
3641 skge_write8(hw, B3_RI_RTO_XS2, SK_RI_TO_53);
3642
3643 skge_write32(hw, B0_HWE_IMSK, IS_ERR_MSK);
3644
3645 /* Set interrupt moderation for Transmit only
3646 * Receive interrupts avoided by NAPI
3647 */
3648 skge_write32(hw, B2_IRQM_MSK, IS_XA1_F|IS_XA2_F);
3649 skge_write32(hw, B2_IRQM_INI, skge_usecs2clk(hw, 100));
3650 skge_write32(hw, B2_IRQM_CTRL, TIM_START);
3651
3652 skge_write32(hw, B0_IMSK, hw->intr_mask);
3653
3654 for (i = 0; i < hw->ports; i++) {
3655 if (hw->chip_id == CHIP_ID_GENESIS)
3656 genesis_reset(hw, i);
3657 else
3658 yukon_reset(hw, i);
3659 }
3660
3661 return 0;
3662 }
3663
3664
3665 #ifdef CONFIG_SKGE_DEBUG
3666
3667 static struct dentry *skge_debug;
3668
3669 static int skge_debug_show(struct seq_file *seq, void *v)
3670 {
3671 struct net_device *dev = seq->private;
3672 const struct skge_port *skge = netdev_priv(dev);
3673 const struct skge_hw *hw = skge->hw;
3674 const struct skge_element *e;
3675
3676 if (!netif_running(dev))
3677 return -ENETDOWN;
3678
3679 seq_printf(seq, "IRQ src=%x mask=%x\n", skge_read32(hw, B0_ISRC),
3680 skge_read32(hw, B0_IMSK));
3681
3682 seq_printf(seq, "Tx Ring: (%d)\n", skge_avail(&skge->tx_ring));
3683 for (e = skge->tx_ring.to_clean; e != skge->tx_ring.to_use; e = e->next) {
3684 const struct skge_tx_desc *t = e->desc;
3685 seq_printf(seq, "%#x dma=%#x%08x %#x csum=%#x/%x/%x\n",
3686 t->control, t->dma_hi, t->dma_lo, t->status,
3687 t->csum_offs, t->csum_write, t->csum_start);
3688 }
3689
3690 seq_printf(seq, "\nRx Ring: \n");
3691 for (e = skge->rx_ring.to_clean; ; e = e->next) {
3692 const struct skge_rx_desc *r = e->desc;
3693
3694 if (r->control & BMU_OWN)
3695 break;
3696
3697 seq_printf(seq, "%#x dma=%#x%08x %#x %#x csum=%#x/%x\n",
3698 r->control, r->dma_hi, r->dma_lo, r->status,
3699 r->timestamp, r->csum1, r->csum1_start);
3700 }
3701
3702 return 0;
3703 }
3704
3705 static int skge_debug_open(struct inode *inode, struct file *file)
3706 {
3707 return single_open(file, skge_debug_show, inode->i_private);
3708 }
3709
3710 static const struct file_operations skge_debug_fops = {
3711 .owner = THIS_MODULE,
3712 .open = skge_debug_open,
3713 .read = seq_read,
3714 .llseek = seq_lseek,
3715 .release = single_release,
3716 };
3717
3718 /*
3719 * Use network device events to create/remove/rename
3720 * debugfs file entries
3721 */
3722 static int skge_device_event(struct notifier_block *unused,
3723 unsigned long event, void *ptr)
3724 {
3725 struct net_device *dev = ptr;
3726 struct skge_port *skge;
3727 struct dentry *d;
3728
3729 if (dev->netdev_ops->ndo_open != &skge_up || !skge_debug)
3730 goto done;
3731
3732 skge = netdev_priv(dev);
3733 switch(event) {
3734 case NETDEV_CHANGENAME:
3735 if (skge->debugfs) {
3736 d = debugfs_rename(skge_debug, skge->debugfs,
3737 skge_debug, dev->name);
3738 if (d)
3739 skge->debugfs = d;
3740 else {
3741 pr_info(PFX "%s: rename failed\n", dev->name);
3742 debugfs_remove(skge->debugfs);
3743 }
3744 }
3745 break;
3746
3747 case NETDEV_GOING_DOWN:
3748 if (skge->debugfs) {
3749 debugfs_remove(skge->debugfs);
3750 skge->debugfs = NULL;
3751 }
3752 break;
3753
3754 case NETDEV_UP:
3755 d = debugfs_create_file(dev->name, S_IRUGO,
3756 skge_debug, dev,
3757 &skge_debug_fops);
3758 if (!d || IS_ERR(d))
3759 pr_info(PFX "%s: debugfs create failed\n",
3760 dev->name);
3761 else
3762 skge->debugfs = d;
3763 break;
3764 }
3765
3766 done:
3767 return NOTIFY_DONE;
3768 }
3769
3770 static struct notifier_block skge_notifier = {
3771 .notifier_call = skge_device_event,
3772 };
3773
3774
3775 static __init void skge_debug_init(void)
3776 {
3777 struct dentry *ent;
3778
3779 ent = debugfs_create_dir("skge", NULL);
3780 if (!ent || IS_ERR(ent)) {
3781 pr_info(PFX "debugfs create directory failed\n");
3782 return;
3783 }
3784
3785 skge_debug = ent;
3786 register_netdevice_notifier(&skge_notifier);
3787 }
3788
3789 static __exit void skge_debug_cleanup(void)
3790 {
3791 if (skge_debug) {
3792 unregister_netdevice_notifier(&skge_notifier);
3793 debugfs_remove(skge_debug);
3794 skge_debug = NULL;
3795 }
3796 }
3797
3798 #else
3799 #define skge_debug_init()
3800 #define skge_debug_cleanup()
3801 #endif
3802
3803 static const struct net_device_ops skge_netdev_ops = {
3804 .ndo_open = skge_up,
3805 .ndo_stop = skge_down,
3806 .ndo_start_xmit = skge_xmit_frame,
3807 .ndo_do_ioctl = skge_ioctl,
3808 .ndo_get_stats = skge_get_stats,
3809 .ndo_tx_timeout = skge_tx_timeout,
3810 .ndo_change_mtu = skge_change_mtu,
3811 .ndo_validate_addr = eth_validate_addr,
3812 .ndo_set_multicast_list = skge_set_multicast,
3813 .ndo_set_mac_address = skge_set_mac_address,
3814 #ifdef CONFIG_NET_POLL_CONTROLLER
3815 .ndo_poll_controller = skge_netpoll,
3816 #endif
3817 };
3818
3819
3820 /* Initialize network device */
3821 static struct net_device *skge_devinit(struct skge_hw *hw, int port,
3822 int highmem)
3823 {
3824 struct skge_port *skge;
3825 struct net_device *dev = alloc_etherdev(sizeof(*skge));
3826
3827 if (!dev) {
3828 dev_err(&hw->pdev->dev, "etherdev alloc failed\n");
3829 return NULL;
3830 }
3831
3832 SET_NETDEV_DEV(dev, &hw->pdev->dev);
3833 dev->netdev_ops = &skge_netdev_ops;
3834 dev->ethtool_ops = &skge_ethtool_ops;
3835 dev->watchdog_timeo = TX_WATCHDOG;
3836 dev->irq = hw->pdev->irq;
3837
3838 if (highmem)
3839 dev->features |= NETIF_F_HIGHDMA;
3840
3841 skge = netdev_priv(dev);
3842 netif_napi_add(dev, &skge->napi, skge_poll, NAPI_WEIGHT);
3843 skge->netdev = dev;
3844 skge->hw = hw;
3845 skge->msg_enable = netif_msg_init(debug, default_msg);
3846
3847 skge->tx_ring.count = DEFAULT_TX_RING_SIZE;
3848 skge->rx_ring.count = DEFAULT_RX_RING_SIZE;
3849
3850 /* Auto speed and flow control */
3851 skge->autoneg = AUTONEG_ENABLE;
3852 skge->flow_control = FLOW_MODE_SYM_OR_REM;
3853 skge->duplex = -1;
3854 skge->speed = -1;
3855 skge->advertising = skge_supported_modes(hw);
3856
3857 if (device_can_wakeup(&hw->pdev->dev)) {
3858 skge->wol = wol_supported(hw) & WAKE_MAGIC;
3859 device_set_wakeup_enable(&hw->pdev->dev, skge->wol);
3860 }
3861
3862 hw->dev[port] = dev;
3863
3864 skge->port = port;
3865
3866 /* Only used for Genesis XMAC */
3867 setup_timer(&skge->link_timer, xm_link_timer, (unsigned long) skge);
3868
3869 if (hw->chip_id != CHIP_ID_GENESIS) {
3870 dev->features |= NETIF_F_IP_CSUM | NETIF_F_SG;
3871 skge->rx_csum = 1;
3872 }
3873
3874 /* read the mac address */
3875 memcpy_fromio(dev->dev_addr, hw->regs + B2_MAC_1 + port*8, ETH_ALEN);
3876 memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
3877
3878 /* device is off until link detection */
3879 netif_carrier_off(dev);
3880 netif_stop_queue(dev);
3881
3882 return dev;
3883 }
3884
3885 static void __devinit skge_show_addr(struct net_device *dev)
3886 {
3887 const struct skge_port *skge = netdev_priv(dev);
3888
3889 if (netif_msg_probe(skge))
3890 printk(KERN_INFO PFX "%s: addr %pM\n",
3891 dev->name, dev->dev_addr);
3892 }
3893
3894 static int __devinit skge_probe(struct pci_dev *pdev,
3895 const struct pci_device_id *ent)
3896 {
3897 struct net_device *dev, *dev1;
3898 struct skge_hw *hw;
3899 int err, using_dac = 0;
3900
3901 err = pci_enable_device(pdev);
3902 if (err) {
3903 dev_err(&pdev->dev, "cannot enable PCI device\n");
3904 goto err_out;
3905 }
3906
3907 err = pci_request_regions(pdev, DRV_NAME);
3908 if (err) {
3909 dev_err(&pdev->dev, "cannot obtain PCI resources\n");
3910 goto err_out_disable_pdev;
3911 }
3912
3913 pci_set_master(pdev);
3914
3915 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
3916 using_dac = 1;
3917 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
3918 } else if (!(err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)))) {
3919 using_dac = 0;
3920 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3921 }
3922
3923 if (err) {
3924 dev_err(&pdev->dev, "no usable DMA configuration\n");
3925 goto err_out_free_regions;
3926 }
3927
3928 #ifdef __BIG_ENDIAN
3929 /* byte swap descriptors in hardware */
3930 {
3931 u32 reg;
3932
3933 pci_read_config_dword(pdev, PCI_DEV_REG2, &reg);
3934 reg |= PCI_REV_DESC;
3935 pci_write_config_dword(pdev, PCI_DEV_REG2, reg);
3936 }
3937 #endif
3938
3939 err = -ENOMEM;
3940 hw = kzalloc(sizeof(*hw), GFP_KERNEL);
3941 if (!hw) {
3942 dev_err(&pdev->dev, "cannot allocate hardware struct\n");
3943 goto err_out_free_regions;
3944 }
3945
3946 hw->pdev = pdev;
3947 spin_lock_init(&hw->hw_lock);
3948 spin_lock_init(&hw->phy_lock);
3949 tasklet_init(&hw->phy_task, &skge_extirq, (unsigned long) hw);
3950
3951 hw->regs = ioremap_nocache(pci_resource_start(pdev, 0), 0x4000);
3952 if (!hw->regs) {
3953 dev_err(&pdev->dev, "cannot map device registers\n");
3954 goto err_out_free_hw;
3955 }
3956
3957 err = skge_reset(hw);
3958 if (err)
3959 goto err_out_iounmap;
3960
3961 printk(KERN_INFO PFX DRV_VERSION " addr 0x%llx irq %d chip %s rev %d\n",
3962 (unsigned long long)pci_resource_start(pdev, 0), pdev->irq,
3963 skge_board_name(hw), hw->chip_rev);
3964
3965 dev = skge_devinit(hw, 0, using_dac);
3966 if (!dev)
3967 goto err_out_led_off;
3968
3969 /* Some motherboards are broken and has zero in ROM. */
3970 if (!is_valid_ether_addr(dev->dev_addr))
3971 dev_warn(&pdev->dev, "bad (zero?) ethernet address in rom\n");
3972
3973 err = register_netdev(dev);
3974 if (err) {
3975 dev_err(&pdev->dev, "cannot register net device\n");
3976 goto err_out_free_netdev;
3977 }
3978
3979 err = request_irq(pdev->irq, skge_intr, IRQF_SHARED, dev->name, hw);
3980 if (err) {
3981 dev_err(&pdev->dev, "%s: cannot assign irq %d\n",
3982 dev->name, pdev->irq);
3983 goto err_out_unregister;
3984 }
3985 skge_show_addr(dev);
3986
3987 if (hw->ports > 1 && (dev1 = skge_devinit(hw, 1, using_dac))) {
3988 if (register_netdev(dev1) == 0)
3989 skge_show_addr(dev1);
3990 else {
3991 /* Failure to register second port need not be fatal */
3992 dev_warn(&pdev->dev, "register of second port failed\n");
3993 hw->dev[1] = NULL;
3994 free_netdev(dev1);
3995 }
3996 }
3997 pci_set_drvdata(pdev, hw);
3998
3999 return 0;
4000
4001 err_out_unregister:
4002 unregister_netdev(dev);
4003 err_out_free_netdev:
4004 free_netdev(dev);
4005 err_out_led_off:
4006 skge_write16(hw, B0_LED, LED_STAT_OFF);
4007 err_out_iounmap:
4008 iounmap(hw->regs);
4009 err_out_free_hw:
4010 kfree(hw);
4011 err_out_free_regions:
4012 pci_release_regions(pdev);
4013 err_out_disable_pdev:
4014 pci_disable_device(pdev);
4015 pci_set_drvdata(pdev, NULL);
4016 err_out:
4017 return err;
4018 }
4019
4020 static void __devexit skge_remove(struct pci_dev *pdev)
4021 {
4022 struct skge_hw *hw = pci_get_drvdata(pdev);
4023 struct net_device *dev0, *dev1;
4024
4025 if (!hw)
4026 return;
4027
4028 flush_scheduled_work();
4029
4030 if ((dev1 = hw->dev[1]))
4031 unregister_netdev(dev1);
4032 dev0 = hw->dev[0];
4033 unregister_netdev(dev0);
4034
4035 tasklet_disable(&hw->phy_task);
4036
4037 spin_lock_irq(&hw->hw_lock);
4038 hw->intr_mask = 0;
4039 skge_write32(hw, B0_IMSK, 0);
4040 skge_read32(hw, B0_IMSK);
4041 spin_unlock_irq(&hw->hw_lock);
4042
4043 skge_write16(hw, B0_LED, LED_STAT_OFF);
4044 skge_write8(hw, B0_CTST, CS_RST_SET);
4045
4046 free_irq(pdev->irq, hw);
4047 pci_release_regions(pdev);
4048 pci_disable_device(pdev);
4049 if (dev1)
4050 free_netdev(dev1);
4051 free_netdev(dev0);
4052
4053 iounmap(hw->regs);
4054 kfree(hw);
4055 pci_set_drvdata(pdev, NULL);
4056 }
4057
4058 #ifdef CONFIG_PM
4059 static int skge_suspend(struct pci_dev *pdev, pm_message_t state)
4060 {
4061 struct skge_hw *hw = pci_get_drvdata(pdev);
4062 int i, err, wol = 0;
4063
4064 if (!hw)
4065 return 0;
4066
4067 err = pci_save_state(pdev);
4068 if (err)
4069 return err;
4070
4071 for (i = 0; i < hw->ports; i++) {
4072 struct net_device *dev = hw->dev[i];
4073 struct skge_port *skge = netdev_priv(dev);
4074
4075 if (netif_running(dev))
4076 skge_down(dev);
4077 if (skge->wol)
4078 skge_wol_init(skge);
4079
4080 wol |= skge->wol;
4081 }
4082
4083 skge_write32(hw, B0_IMSK, 0);
4084
4085 pci_prepare_to_sleep(pdev);
4086
4087 return 0;
4088 }
4089
4090 static int skge_resume(struct pci_dev *pdev)
4091 {
4092 struct skge_hw *hw = pci_get_drvdata(pdev);
4093 int i, err;
4094
4095 if (!hw)
4096 return 0;
4097
4098 err = pci_back_from_sleep(pdev);
4099 if (err)
4100 goto out;
4101
4102 err = pci_restore_state(pdev);
4103 if (err)
4104 goto out;
4105
4106 err = skge_reset(hw);
4107 if (err)
4108 goto out;
4109
4110 for (i = 0; i < hw->ports; i++) {
4111 struct net_device *dev = hw->dev[i];
4112
4113 if (netif_running(dev)) {
4114 err = skge_up(dev);
4115
4116 if (err) {
4117 printk(KERN_ERR PFX "%s: could not up: %d\n",
4118 dev->name, err);
4119 dev_close(dev);
4120 goto out;
4121 }
4122 }
4123 }
4124 out:
4125 return err;
4126 }
4127 #endif
4128
4129 static void skge_shutdown(struct pci_dev *pdev)
4130 {
4131 struct skge_hw *hw = pci_get_drvdata(pdev);
4132 int i, wol = 0;
4133
4134 if (!hw)
4135 return;
4136
4137 for (i = 0; i < hw->ports; i++) {
4138 struct net_device *dev = hw->dev[i];
4139 struct skge_port *skge = netdev_priv(dev);
4140
4141 if (skge->wol)
4142 skge_wol_init(skge);
4143 wol |= skge->wol;
4144 }
4145
4146 if (pci_enable_wake(pdev, PCI_D3cold, wol))
4147 pci_enable_wake(pdev, PCI_D3hot, wol);
4148
4149 pci_disable_device(pdev);
4150 pci_set_power_state(pdev, PCI_D3hot);
4151
4152 }
4153
4154 static struct pci_driver skge_driver = {
4155 .name = DRV_NAME,
4156 .id_table = skge_id_table,
4157 .probe = skge_probe,
4158 .remove = __devexit_p(skge_remove),
4159 #ifdef CONFIG_PM
4160 .suspend = skge_suspend,
4161 .resume = skge_resume,
4162 #endif
4163 .shutdown = skge_shutdown,
4164 };
4165
4166 static int __init skge_init_module(void)
4167 {
4168 skge_debug_init();
4169 return pci_register_driver(&skge_driver);
4170 }
4171
4172 static void __exit skge_cleanup_module(void)
4173 {
4174 pci_unregister_driver(&skge_driver);
4175 skge_debug_cleanup();
4176 }
4177
4178 module_init(skge_init_module);
4179 module_exit(skge_cleanup_module);
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