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x86: fix bootup crash in native_read_tsc()
[wrt350n-kernel.git] / drivers / net / sc92031.c
blob37b42394560dfc239377096ee30da8e5887aaff3
1 /* Silan SC92031 PCI Fast Ethernet Adapter driver
2 *
3 * Based on vendor drivers:
4 * Silan Fast Ethernet Netcard Driver:
5 * MODULE_AUTHOR ("gaoyonghong");
6 * MODULE_DESCRIPTION ("SILAN Fast Ethernet driver");
7 * MODULE_LICENSE("GPL");
8 * 8139D Fast Ethernet driver:
9 * (C) 2002 by gaoyonghong
10 * MODULE_AUTHOR ("gaoyonghong");
11 * MODULE_DESCRIPTION ("Rsltek 8139D PCI Fast Ethernet Adapter driver");
12 * MODULE_LICENSE("GPL");
13 * Both are almost identical and seem to be based on pci-skeleton.c
14 *
15 * Rewritten for 2.6 by Cesar Eduardo Barros
16 */
17
18 /* Note about set_mac_address: I don't know how to change the hardware
19 * matching, so you need to enable IFF_PROMISC when using it.
20 */
21
22 #include <linux/module.h>
23 #include <linux/kernel.h>
24 #include <linux/delay.h>
25 #include <linux/pci.h>
26 #include <linux/dma-mapping.h>
27 #include <linux/netdevice.h>
28 #include <linux/etherdevice.h>
29 #include <linux/ethtool.h>
30 #include <linux/crc32.h>
31
32 #include <asm/irq.h>
33
34 #define PCI_VENDOR_ID_SILAN 0x1904
35 #define PCI_DEVICE_ID_SILAN_SC92031 0x2031
36 #define PCI_DEVICE_ID_SILAN_8139D 0x8139
37
38 #define SC92031_NAME "sc92031"
39 #define SC92031_DESCRIPTION "Silan SC92031 PCI Fast Ethernet Adapter driver"
40 #define SC92031_VERSION "2.0c"
41
42 /* BAR 0 is MMIO, BAR 1 is PIO */
43 #ifndef SC92031_USE_BAR
44 #define SC92031_USE_BAR 0
45 #endif
46
47 /* Maximum number of multicast addresses to filter (vs. Rx-all-multicast). */
48 static int multicast_filter_limit = 64;
49 module_param(multicast_filter_limit, int, 0);
50 MODULE_PARM_DESC(multicast_filter_limit,
51 "Maximum number of filtered multicast addresses");
52
53 static int media;
54 module_param(media, int, 0);
55 MODULE_PARM_DESC(media, "Media type (0x00 = autodetect,"
56 " 0x01 = 10M half, 0x02 = 10M full,"
57 " 0x04 = 100M half, 0x08 = 100M full)");
58
59 /* Size of the in-memory receive ring. */
60 #define RX_BUF_LEN_IDX 3 /* 0==8K, 1==16K, 2==32K, 3==64K ,4==128K*/
61 #define RX_BUF_LEN (8192 << RX_BUF_LEN_IDX)
62
63 /* Number of Tx descriptor registers. */
64 #define NUM_TX_DESC 4
65
66 /* max supported ethernet frame size -- must be at least (dev->mtu+14+4).*/
67 #define MAX_ETH_FRAME_SIZE 1536
68
69 /* Size of the Tx bounce buffers -- must be at least (dev->mtu+14+4). */
70 #define TX_BUF_SIZE MAX_ETH_FRAME_SIZE
71 #define TX_BUF_TOT_LEN (TX_BUF_SIZE * NUM_TX_DESC)
72
73 /* The following settings are log_2(bytes)-4: 0 == 16 bytes .. 6==1024, 7==end of packet. */
74 #define RX_FIFO_THRESH 7 /* Rx buffer level before first PCI xfer. */
75
76 /* Time in jiffies before concluding the transmitter is hung. */
77 #define TX_TIMEOUT (4*HZ)
78
79 #define SILAN_STATS_NUM 2 /* number of ETHTOOL_GSTATS */
80
81 /* media options */
82 #define AUTOSELECT 0x00
83 #define M10_HALF 0x01
84 #define M10_FULL 0x02
85 #define M100_HALF 0x04
86 #define M100_FULL 0x08
87
88 /* Symbolic offsets to registers. */
89 enum silan_registers {
90 Config0 = 0x00, // Config0
91 Config1 = 0x04, // Config1
92 RxBufWPtr = 0x08, // Rx buffer writer poiter
93 IntrStatus = 0x0C, // Interrupt status
94 IntrMask = 0x10, // Interrupt mask
95 RxbufAddr = 0x14, // Rx buffer start address
96 RxBufRPtr = 0x18, // Rx buffer read pointer
97 Txstatusall = 0x1C, // Transmit status of all descriptors
98 TxStatus0 = 0x20, // Transmit status (Four 32bit registers).
99 TxAddr0 = 0x30, // Tx descriptors (also four 32bit).
100 RxConfig = 0x40, // Rx configuration
101 MAC0 = 0x44, // Ethernet hardware address.
102 MAR0 = 0x4C, // Multicast filter.
103 RxStatus0 = 0x54, // Rx status
104 TxConfig = 0x5C, // Tx configuration
105 PhyCtrl = 0x60, // physical control
106 FlowCtrlConfig = 0x64, // flow control
107 Miicmd0 = 0x68, // Mii command0 register
108 Miicmd1 = 0x6C, // Mii command1 register
109 Miistatus = 0x70, // Mii status register
110 Timercnt = 0x74, // Timer counter register
111 TimerIntr = 0x78, // Timer interrupt register
112 PMConfig = 0x7C, // Power Manager configuration
113 CRC0 = 0x80, // Power Manager CRC ( Two 32bit regisers)
114 Wakeup0 = 0x88, // power Manager wakeup( Eight 64bit regiser)
115 LSBCRC0 = 0xC8, // power Manager LSBCRC(Two 32bit regiser)
116 TestD0 = 0xD0,
117 TestD4 = 0xD4,
118 TestD8 = 0xD8,
119 };
120
121 #define MII_BMCR 0 // Basic mode control register
122 #define MII_BMSR 1 // Basic mode status register
123 #define MII_JAB 16
124 #define MII_OutputStatus 24
125
126 #define BMCR_FULLDPLX 0x0100 // Full duplex
127 #define BMCR_ANRESTART 0x0200 // Auto negotiation restart
128 #define BMCR_ANENABLE 0x1000 // Enable auto negotiation
129 #define BMCR_SPEED100 0x2000 // Select 100Mbps
130 #define BMSR_LSTATUS 0x0004 // Link status
131 #define PHY_16_JAB_ENB 0x1000
132 #define PHY_16_PORT_ENB 0x1
133
134 enum IntrStatusBits {
135 LinkFail = 0x80000000,
136 LinkOK = 0x40000000,
137 TimeOut = 0x20000000,
138 RxOverflow = 0x0040,
139 RxOK = 0x0020,
140 TxOK = 0x0001,
141 IntrBits = LinkFail|LinkOK|TimeOut|RxOverflow|RxOK|TxOK,
142 };
143
144 enum TxStatusBits {
145 TxCarrierLost = 0x20000000,
146 TxAborted = 0x10000000,
147 TxOutOfWindow = 0x08000000,
148 TxNccShift = 22,
149 EarlyTxThresShift = 16,
150 TxStatOK = 0x8000,
151 TxUnderrun = 0x4000,
152 TxOwn = 0x2000,
153 };
154
155 enum RxStatusBits {
156 RxStatesOK = 0x80000,
157 RxBadAlign = 0x40000,
158 RxHugeFrame = 0x20000,
159 RxSmallFrame = 0x10000,
160 RxCRCOK = 0x8000,
161 RxCrlFrame = 0x4000,
162 Rx_Broadcast = 0x2000,
163 Rx_Multicast = 0x1000,
164 RxAddrMatch = 0x0800,
165 MiiErr = 0x0400,
166 };
167
168 enum RxConfigBits {
169 RxFullDx = 0x80000000,
170 RxEnb = 0x40000000,
171 RxSmall = 0x20000000,
172 RxHuge = 0x10000000,
173 RxErr = 0x08000000,
174 RxAllphys = 0x04000000,
175 RxMulticast = 0x02000000,
176 RxBroadcast = 0x01000000,
177 RxLoopBack = (1 << 23) | (1 << 22),
178 LowThresholdShift = 12,
179 HighThresholdShift = 2,
180 };
181
182 enum TxConfigBits {
183 TxFullDx = 0x80000000,
184 TxEnb = 0x40000000,
185 TxEnbPad = 0x20000000,
186 TxEnbHuge = 0x10000000,
187 TxEnbFCS = 0x08000000,
188 TxNoBackOff = 0x04000000,
189 TxEnbPrem = 0x02000000,
190 TxCareLostCrs = 0x1000000,
191 TxExdCollNum = 0xf00000,
192 TxDataRate = 0x80000,
193 };
194
195 enum PhyCtrlconfigbits {
196 PhyCtrlAne = 0x80000000,
197 PhyCtrlSpd100 = 0x40000000,
198 PhyCtrlSpd10 = 0x20000000,
199 PhyCtrlPhyBaseAddr = 0x1f000000,
200 PhyCtrlDux = 0x800000,
201 PhyCtrlReset = 0x400000,
202 };
203
204 enum FlowCtrlConfigBits {
205 FlowCtrlFullDX = 0x80000000,
206 FlowCtrlEnb = 0x40000000,
207 };
208
209 enum Config0Bits {
210 Cfg0_Reset = 0x80000000,
211 Cfg0_Anaoff = 0x40000000,
212 Cfg0_LDPS = 0x20000000,
213 };
214
215 enum Config1Bits {
216 Cfg1_EarlyRx = 1 << 31,
217 Cfg1_EarlyTx = 1 << 30,
218
219 //rx buffer size
220 Cfg1_Rcv8K = 0x0,
221 Cfg1_Rcv16K = 0x1,
222 Cfg1_Rcv32K = 0x3,
223 Cfg1_Rcv64K = 0x7,
224 Cfg1_Rcv128K = 0xf,
225 };
226
227 enum MiiCmd0Bits {
228 Mii_Divider = 0x20000000,
229 Mii_WRITE = 0x400000,
230 Mii_READ = 0x200000,
231 Mii_SCAN = 0x100000,
232 Mii_Tamod = 0x80000,
233 Mii_Drvmod = 0x40000,
234 Mii_mdc = 0x20000,
235 Mii_mdoen = 0x10000,
236 Mii_mdo = 0x8000,
237 Mii_mdi = 0x4000,
238 };
239
240 enum MiiStatusBits {
241 Mii_StatusBusy = 0x80000000,
242 };
243
244 enum PMConfigBits {
245 PM_Enable = 1 << 31,
246 PM_LongWF = 1 << 30,
247 PM_Magic = 1 << 29,
248 PM_LANWake = 1 << 28,
249 PM_LWPTN = (1 << 27 | 1<< 26),
250 PM_LinkUp = 1 << 25,
251 PM_WakeUp = 1 << 24,
252 };
253
254 /* Locking rules:
255 * priv->lock protects most of the fields of priv and most of the
256 * hardware registers. It does not have to protect against softirqs
257 * between sc92031_disable_interrupts and sc92031_enable_interrupts;
258 * it also does not need to be used in ->open and ->stop while the
259 * device interrupts are off.
260 * Not having to protect against softirqs is very useful due to heavy
261 * use of mdelay() at _sc92031_reset.
262 * Functions prefixed with _sc92031_ must be called with the lock held;
263 * functions prefixed with sc92031_ must be called without the lock held.
264 * Use mmiowb() before unlocking if the hardware was written to.
265 */
266
267 /* Locking rules for the interrupt:
268 * - the interrupt and the tasklet never run at the same time
269 * - neither run between sc92031_disable_interrupts and
270 * sc92031_enable_interrupt
271 */
272
273 struct sc92031_priv {
274 spinlock_t lock;
275 /* iomap.h cookie */
276 void __iomem *port_base;
277 /* pci device structure */
278 struct pci_dev *pdev;
279 /* tasklet */
280 struct tasklet_struct tasklet;
281
282 /* CPU address of rx ring */
283 void *rx_ring;
284 /* PCI address of rx ring */
285 dma_addr_t rx_ring_dma_addr;
286 /* PCI address of rx ring read pointer */
287 dma_addr_t rx_ring_tail;
288
289 /* tx ring write index */
290 unsigned tx_head;
291 /* tx ring read index */
292 unsigned tx_tail;
293 /* CPU address of tx bounce buffer */
294 void *tx_bufs;
295 /* PCI address of tx bounce buffer */
296 dma_addr_t tx_bufs_dma_addr;
297
298 /* copies of some hardware registers */
299 u32 intr_status;
300 atomic_t intr_mask;
301 u32 rx_config;
302 u32 tx_config;
303 u32 pm_config;
304
305 /* copy of some flags from dev->flags */
306 unsigned int mc_flags;
307
308 /* for ETHTOOL_GSTATS */
309 u64 tx_timeouts;
310 u64 rx_loss;
311
312 /* for dev->get_stats */
313 long rx_value;
314 struct net_device_stats stats;
315 };
316
317 /* I don't know which registers can be safely read; however, I can guess
318 * MAC0 is one of them. */
319 static inline void _sc92031_dummy_read(void __iomem *port_base)
320 {
321 ioread32(port_base + MAC0);
322 }
323
324 static u32 _sc92031_mii_wait(void __iomem *port_base)
325 {
326 u32 mii_status;
327
328 do {
329 udelay(10);
330 mii_status = ioread32(port_base + Miistatus);
331 } while (mii_status & Mii_StatusBusy);
332
333 return mii_status;
334 }
335
336 static u32 _sc92031_mii_cmd(void __iomem *port_base, u32 cmd0, u32 cmd1)
337 {
338 iowrite32(Mii_Divider, port_base + Miicmd0);
339
340 _sc92031_mii_wait(port_base);
341
342 iowrite32(cmd1, port_base + Miicmd1);
343 iowrite32(Mii_Divider | cmd0, port_base + Miicmd0);
344
345 return _sc92031_mii_wait(port_base);
346 }
347
348 static void _sc92031_mii_scan(void __iomem *port_base)
349 {
350 _sc92031_mii_cmd(port_base, Mii_SCAN, 0x1 << 6);
351 }
352
353 static u16 _sc92031_mii_read(void __iomem *port_base, unsigned reg)
354 {
355 return _sc92031_mii_cmd(port_base, Mii_READ, reg << 6) >> 13;
356 }
357
358 static void _sc92031_mii_write(void __iomem *port_base, unsigned reg, u16 val)
359 {
360 _sc92031_mii_cmd(port_base, Mii_WRITE, (reg << 6) | ((u32)val << 11));
361 }
362
363 static void sc92031_disable_interrupts(struct net_device *dev)
364 {
365 struct sc92031_priv *priv = netdev_priv(dev);
366 void __iomem *port_base = priv->port_base;
367
368 /* tell the tasklet/interrupt not to enable interrupts */
369 atomic_set(&priv->intr_mask, 0);
370 wmb();
371
372 /* stop interrupts */
373 iowrite32(0, port_base + IntrMask);
374 _sc92031_dummy_read(port_base);
375 mmiowb();
376
377 /* wait for any concurrent interrupt/tasklet to finish */
378 synchronize_irq(dev->irq);
379 tasklet_disable(&priv->tasklet);
380 }
381
382 static void sc92031_enable_interrupts(struct net_device *dev)
383 {
384 struct sc92031_priv *priv = netdev_priv(dev);
385 void __iomem *port_base = priv->port_base;
386
387 tasklet_enable(&priv->tasklet);
388
389 atomic_set(&priv->intr_mask, IntrBits);
390 wmb();
391
392 iowrite32(IntrBits, port_base + IntrMask);
393 mmiowb();
394 }
395
396 static void _sc92031_disable_tx_rx(struct net_device *dev)
397 {
398 struct sc92031_priv *priv = netdev_priv(dev);
399 void __iomem *port_base = priv->port_base;
400
401 priv->rx_config &= ~RxEnb;
402 priv->tx_config &= ~TxEnb;
403 iowrite32(priv->rx_config, port_base + RxConfig);
404 iowrite32(priv->tx_config, port_base + TxConfig);
405 }
406
407 static void _sc92031_enable_tx_rx(struct net_device *dev)
408 {
409 struct sc92031_priv *priv = netdev_priv(dev);
410 void __iomem *port_base = priv->port_base;
411
412 priv->rx_config |= RxEnb;
413 priv->tx_config |= TxEnb;
414 iowrite32(priv->rx_config, port_base + RxConfig);
415 iowrite32(priv->tx_config, port_base + TxConfig);
416 }
417
418 static void _sc92031_tx_clear(struct net_device *dev)
419 {
420 struct sc92031_priv *priv = netdev_priv(dev);
421
422 while (priv->tx_head - priv->tx_tail > 0) {
423 priv->tx_tail++;
424 priv->stats.tx_dropped++;
425 }
426 priv->tx_head = priv->tx_tail = 0;
427 }
428
429 static void _sc92031_set_mar(struct net_device *dev)
430 {
431 struct sc92031_priv *priv = netdev_priv(dev);
432 void __iomem *port_base = priv->port_base;
433 u32 mar0 = 0, mar1 = 0;
434
435 if ((dev->flags & IFF_PROMISC)
436 || dev->mc_count > multicast_filter_limit
437 || (dev->flags & IFF_ALLMULTI))
438 mar0 = mar1 = 0xffffffff;
439 else if (dev->flags & IFF_MULTICAST) {
440 struct dev_mc_list *mc_list;
441
442 for (mc_list = dev->mc_list; mc_list; mc_list = mc_list->next) {
443 u32 crc;
444 unsigned bit = 0;
445
446 crc = ~ether_crc(ETH_ALEN, mc_list->dmi_addr);
447 crc >>= 24;
448
449 if (crc & 0x01) bit |= 0x02;
450 if (crc & 0x02) bit |= 0x01;
451 if (crc & 0x10) bit |= 0x20;
452 if (crc & 0x20) bit |= 0x10;
453 if (crc & 0x40) bit |= 0x08;
454 if (crc & 0x80) bit |= 0x04;
455
456 if (bit > 31)
457 mar0 |= 0x1 << (bit - 32);
458 else
459 mar1 |= 0x1 << bit;
460 }
461 }
462
463 iowrite32(mar0, port_base + MAR0);
464 iowrite32(mar1, port_base + MAR0 + 4);
465 }
466
467 static void _sc92031_set_rx_config(struct net_device *dev)
468 {
469 struct sc92031_priv *priv = netdev_priv(dev);
470 void __iomem *port_base = priv->port_base;
471 unsigned int old_mc_flags;
472 u32 rx_config_bits = 0;
473
474 old_mc_flags = priv->mc_flags;
475
476 if (dev->flags & IFF_PROMISC)
477 rx_config_bits |= RxSmall | RxHuge | RxErr | RxBroadcast
478 | RxMulticast | RxAllphys;
479
480 if (dev->flags & (IFF_ALLMULTI | IFF_MULTICAST))
481 rx_config_bits |= RxMulticast;
482
483 if (dev->flags & IFF_BROADCAST)
484 rx_config_bits |= RxBroadcast;
485
486 priv->rx_config &= ~(RxSmall | RxHuge | RxErr | RxBroadcast
487 | RxMulticast | RxAllphys);
488 priv->rx_config |= rx_config_bits;
489
490 priv->mc_flags = dev->flags & (IFF_PROMISC | IFF_ALLMULTI
491 | IFF_MULTICAST | IFF_BROADCAST);
492
493 if (netif_carrier_ok(dev) && priv->mc_flags != old_mc_flags)
494 iowrite32(priv->rx_config, port_base + RxConfig);
495 }
496
497 static bool _sc92031_check_media(struct net_device *dev)
498 {
499 struct sc92031_priv *priv = netdev_priv(dev);
500 void __iomem *port_base = priv->port_base;
501 u16 bmsr;
502
503 bmsr = _sc92031_mii_read(port_base, MII_BMSR);
504 rmb();
505 if (bmsr & BMSR_LSTATUS) {
506 bool speed_100, duplex_full;
507 u32 flow_ctrl_config = 0;
508 u16 output_status = _sc92031_mii_read(port_base,
509 MII_OutputStatus);
510 _sc92031_mii_scan(port_base);
511
512 speed_100 = output_status & 0x2;
513 duplex_full = output_status & 0x4;
514
515 /* Initial Tx/Rx configuration */
516 priv->rx_config = (0x40 << LowThresholdShift) | (0x1c0 << HighThresholdShift);
517 priv->tx_config = 0x48800000;
518
519 /* NOTE: vendor driver had dead code here to enable tx padding */
520
521 if (!speed_100)
522 priv->tx_config |= 0x80000;
523
524 // configure rx mode
525 _sc92031_set_rx_config(dev);
526
527 if (duplex_full) {
528 priv->rx_config |= RxFullDx;
529 priv->tx_config |= TxFullDx;
530 flow_ctrl_config = FlowCtrlFullDX | FlowCtrlEnb;
531 } else {
532 priv->rx_config &= ~RxFullDx;
533 priv->tx_config &= ~TxFullDx;
534 }
535
536 _sc92031_set_mar(dev);
537 _sc92031_set_rx_config(dev);
538 _sc92031_enable_tx_rx(dev);
539 iowrite32(flow_ctrl_config, port_base + FlowCtrlConfig);
540
541 netif_carrier_on(dev);
542
543 if (printk_ratelimit())
544 printk(KERN_INFO "%s: link up, %sMbps, %s-duplex\n",
545 dev->name,
546 speed_100 ? "100" : "10",
547 duplex_full ? "full" : "half");
548 return true;
549 } else {
550 _sc92031_mii_scan(port_base);
551
552 netif_carrier_off(dev);
553
554 _sc92031_disable_tx_rx(dev);
555
556 if (printk_ratelimit())
557 printk(KERN_INFO "%s: link down\n", dev->name);
558 return false;
559 }
560 }
561
562 static void _sc92031_phy_reset(struct net_device *dev)
563 {
564 struct sc92031_priv *priv = netdev_priv(dev);
565 void __iomem *port_base = priv->port_base;
566 u32 phy_ctrl;
567
568 phy_ctrl = ioread32(port_base + PhyCtrl);
569 phy_ctrl &= ~(PhyCtrlDux | PhyCtrlSpd100 | PhyCtrlSpd10);
570 phy_ctrl |= PhyCtrlAne | PhyCtrlReset;
571
572 switch (media) {
573 default:
574 case AUTOSELECT:
575 phy_ctrl |= PhyCtrlDux | PhyCtrlSpd100 | PhyCtrlSpd10;
576 break;
577 case M10_HALF:
578 phy_ctrl |= PhyCtrlSpd10;
579 break;
580 case M10_FULL:
581 phy_ctrl |= PhyCtrlDux | PhyCtrlSpd10;
582 break;
583 case M100_HALF:
584 phy_ctrl |= PhyCtrlSpd100;
585 break;
586 case M100_FULL:
587 phy_ctrl |= PhyCtrlDux | PhyCtrlSpd100;
588 break;
589 }
590
591 iowrite32(phy_ctrl, port_base + PhyCtrl);
592 mdelay(10);
593
594 phy_ctrl &= ~PhyCtrlReset;
595 iowrite32(phy_ctrl, port_base + PhyCtrl);
596 mdelay(1);
597
598 _sc92031_mii_write(port_base, MII_JAB,
599 PHY_16_JAB_ENB | PHY_16_PORT_ENB);
600 _sc92031_mii_scan(port_base);
601
602 netif_carrier_off(dev);
603 netif_stop_queue(dev);
604 }
605
606 static void _sc92031_reset(struct net_device *dev)
607 {
608 struct sc92031_priv *priv = netdev_priv(dev);
609 void __iomem *port_base = priv->port_base;
610
611 /* disable PM */
612 iowrite32(0, port_base + PMConfig);
613
614 /* soft reset the chip */
615 iowrite32(Cfg0_Reset, port_base + Config0);
616 mdelay(200);
617
618 iowrite32(0, port_base + Config0);
619 mdelay(10);
620
621 /* disable interrupts */
622 iowrite32(0, port_base + IntrMask);
623
624 /* clear multicast address */
625 iowrite32(0, port_base + MAR0);
626 iowrite32(0, port_base + MAR0 + 4);
627
628 /* init rx ring */
629 iowrite32(priv->rx_ring_dma_addr, port_base + RxbufAddr);
630 priv->rx_ring_tail = priv->rx_ring_dma_addr;
631
632 /* init tx ring */
633 _sc92031_tx_clear(dev);
634
635 /* clear old register values */
636 priv->intr_status = 0;
637 atomic_set(&priv->intr_mask, 0);
638 priv->rx_config = 0;
639 priv->tx_config = 0;
640 priv->mc_flags = 0;
641
642 /* configure rx buffer size */
643 /* NOTE: vendor driver had dead code here to enable early tx/rx */
644 iowrite32(Cfg1_Rcv64K, port_base + Config1);
645
646 _sc92031_phy_reset(dev);
647 _sc92031_check_media(dev);
648
649 /* calculate rx fifo overflow */
650 priv->rx_value = 0;
651
652 /* enable PM */
653 iowrite32(priv->pm_config, port_base + PMConfig);
654
655 /* clear intr register */
656 ioread32(port_base + IntrStatus);
657 }
658
659 static void _sc92031_tx_tasklet(struct net_device *dev)
660 {
661 struct sc92031_priv *priv = netdev_priv(dev);
662 void __iomem *port_base = priv->port_base;
663
664 unsigned old_tx_tail;
665 unsigned entry;
666 u32 tx_status;
667
668 old_tx_tail = priv->tx_tail;
669 while (priv->tx_head - priv->tx_tail > 0) {
670 entry = priv->tx_tail % NUM_TX_DESC;
671 tx_status = ioread32(port_base + TxStatus0 + entry * 4);
672
673 if (!(tx_status & (TxStatOK | TxUnderrun | TxAborted)))
674 break;
675
676 priv->tx_tail++;
677
678 if (tx_status & TxStatOK) {
679 priv->stats.tx_bytes += tx_status & 0x1fff;
680 priv->stats.tx_packets++;
681 /* Note: TxCarrierLost is always asserted at 100mbps. */
682 priv->stats.collisions += (tx_status >> 22) & 0xf;
683 }
684
685 if (tx_status & (TxOutOfWindow | TxAborted)) {
686 priv->stats.tx_errors++;
687
688 if (tx_status & TxAborted)
689 priv->stats.tx_aborted_errors++;
690
691 if (tx_status & TxCarrierLost)
692 priv->stats.tx_carrier_errors++;
693
694 if (tx_status & TxOutOfWindow)
695 priv->stats.tx_window_errors++;
696 }
697
698 if (tx_status & TxUnderrun)
699 priv->stats.tx_fifo_errors++;
700 }
701
702 if (priv->tx_tail != old_tx_tail)
703 if (netif_queue_stopped(dev))
704 netif_wake_queue(dev);
705 }
706
707 static void _sc92031_rx_tasklet_error(u32 rx_status,
708 struct sc92031_priv *priv, unsigned rx_size)
709 {
710 if(rx_size > (MAX_ETH_FRAME_SIZE + 4) || rx_size < 16) {
711 priv->stats.rx_errors++;
712 priv->stats.rx_length_errors++;
713 }
714
715 if (!(rx_status & RxStatesOK)) {
716 priv->stats.rx_errors++;
717
718 if (rx_status & (RxHugeFrame | RxSmallFrame))
719 priv->stats.rx_length_errors++;
720
721 if (rx_status & RxBadAlign)
722 priv->stats.rx_frame_errors++;
723
724 if (!(rx_status & RxCRCOK))
725 priv->stats.rx_crc_errors++;
726 } else
727 priv->rx_loss++;
728 }
729
730 static void _sc92031_rx_tasklet(struct net_device *dev)
731 {
732 struct sc92031_priv *priv = netdev_priv(dev);
733 void __iomem *port_base = priv->port_base;
734
735 dma_addr_t rx_ring_head;
736 unsigned rx_len;
737 unsigned rx_ring_offset;
738 void *rx_ring = priv->rx_ring;
739
740 rx_ring_head = ioread32(port_base + RxBufWPtr);
741 rmb();
742
743 /* rx_ring_head is only 17 bits in the RxBufWPtr register.
744 * we need to change it to 32 bits physical address
745 */
746 rx_ring_head &= (dma_addr_t)(RX_BUF_LEN - 1);
747 rx_ring_head |= priv->rx_ring_dma_addr & ~(dma_addr_t)(RX_BUF_LEN - 1);
748 if (rx_ring_head < priv->rx_ring_dma_addr)
749 rx_ring_head += RX_BUF_LEN;
750
751 if (rx_ring_head >= priv->rx_ring_tail)
752 rx_len = rx_ring_head - priv->rx_ring_tail;
753 else
754 rx_len = RX_BUF_LEN - (priv->rx_ring_tail - rx_ring_head);
755
756 if (!rx_len)
757 return;
758
759 if (unlikely(rx_len > RX_BUF_LEN)) {
760 if (printk_ratelimit())
761 printk(KERN_ERR "%s: rx packets length > rx buffer\n",
762 dev->name);
763 return;
764 }
765
766 rx_ring_offset = (priv->rx_ring_tail - priv->rx_ring_dma_addr) % RX_BUF_LEN;
767
768 while (rx_len) {
769 u32 rx_status;
770 unsigned rx_size, rx_size_align, pkt_size;
771 struct sk_buff *skb;
772
773 rx_status = le32_to_cpup((__le32 *)(rx_ring + rx_ring_offset));
774 rmb();
775
776 rx_size = rx_status >> 20;
777 rx_size_align = (rx_size + 3) & ~3; // for 4 bytes aligned
778 pkt_size = rx_size - 4; // Omit the four octet CRC from the length.
779
780 rx_ring_offset = (rx_ring_offset + 4) % RX_BUF_LEN;
781
782 if (unlikely(rx_status == 0
783 || rx_size > (MAX_ETH_FRAME_SIZE + 4)
784 || rx_size < 16
785 || !(rx_status & RxStatesOK))) {
786 _sc92031_rx_tasklet_error(rx_status, priv, rx_size);
787 break;
788 }
789
790 if (unlikely(rx_size_align + 4 > rx_len)) {
791 if (printk_ratelimit())
792 printk(KERN_ERR "%s: rx_len is too small\n", dev->name);
793 break;
794 }
795
796 rx_len -= rx_size_align + 4;
797
798 skb = dev_alloc_skb(pkt_size + NET_IP_ALIGN);
799 if (unlikely(!skb)) {
800 if (printk_ratelimit())
801 printk(KERN_ERR "%s: Couldn't allocate a skb_buff for a packet of size %u\n",
802 dev->name, pkt_size);
803 goto next;
804 }
805
806 skb_reserve(skb, NET_IP_ALIGN);
807
808 if ((rx_ring_offset + pkt_size) > RX_BUF_LEN) {
809 memcpy(skb_put(skb, RX_BUF_LEN - rx_ring_offset),
810 rx_ring + rx_ring_offset, RX_BUF_LEN - rx_ring_offset);
811 memcpy(skb_put(skb, pkt_size - (RX_BUF_LEN - rx_ring_offset)),
812 rx_ring, pkt_size - (RX_BUF_LEN - rx_ring_offset));
813 } else {
814 memcpy(skb_put(skb, pkt_size), rx_ring + rx_ring_offset, pkt_size);
815 }
816
817 skb->protocol = eth_type_trans(skb, dev);
818 dev->last_rx = jiffies;
819 netif_rx(skb);
820
821 priv->stats.rx_bytes += pkt_size;
822 priv->stats.rx_packets++;
823
824 if (rx_status & Rx_Multicast)
825 priv->stats.multicast++;
826
827 next:
828 rx_ring_offset = (rx_ring_offset + rx_size_align) % RX_BUF_LEN;
829 }
830 mb();
831
832 priv->rx_ring_tail = rx_ring_head;
833 iowrite32(priv->rx_ring_tail, port_base + RxBufRPtr);
834 }
835
836 static void _sc92031_link_tasklet(struct net_device *dev)
837 {
838 struct sc92031_priv *priv = netdev_priv(dev);
839
840 if (_sc92031_check_media(dev))
841 netif_wake_queue(dev);
842 else {
843 netif_stop_queue(dev);
844 priv->stats.tx_carrier_errors++;
845 }
846 }
847
848 static void sc92031_tasklet(unsigned long data)
849 {
850 struct net_device *dev = (struct net_device *)data;
851 struct sc92031_priv *priv = netdev_priv(dev);
852 void __iomem *port_base = priv->port_base;
853 u32 intr_status, intr_mask;
854
855 intr_status = priv->intr_status;
856
857 spin_lock(&priv->lock);
858
859 if (unlikely(!netif_running(dev)))
860 goto out;
861
862 if (intr_status & TxOK)
863 _sc92031_tx_tasklet(dev);
864
865 if (intr_status & RxOK)
866 _sc92031_rx_tasklet(dev);
867
868 if (intr_status & RxOverflow)
869 priv->stats.rx_errors++;
870
871 if (intr_status & TimeOut) {
872 priv->stats.rx_errors++;
873 priv->stats.rx_length_errors++;
874 }
875
876 if (intr_status & (LinkFail | LinkOK))
877 _sc92031_link_tasklet(dev);
878
879 out:
880 intr_mask = atomic_read(&priv->intr_mask);
881 rmb();
882
883 iowrite32(intr_mask, port_base + IntrMask);
884 mmiowb();
885
886 spin_unlock(&priv->lock);
887 }
888
889 static irqreturn_t sc92031_interrupt(int irq, void *dev_id)
890 {
891 struct net_device *dev = dev_id;
892 struct sc92031_priv *priv = netdev_priv(dev);
893 void __iomem *port_base = priv->port_base;
894 u32 intr_status, intr_mask;
895
896 /* mask interrupts before clearing IntrStatus */
897 iowrite32(0, port_base + IntrMask);
898 _sc92031_dummy_read(port_base);
899
900 intr_status = ioread32(port_base + IntrStatus);
901 if (unlikely(intr_status == 0xffffffff))
902 return IRQ_NONE; // hardware has gone missing
903
904 intr_status &= IntrBits;
905 if (!intr_status)
906 goto out_none;
907
908 priv->intr_status = intr_status;
909 tasklet_schedule(&priv->tasklet);
910
911 return IRQ_HANDLED;
912
913 out_none:
914 intr_mask = atomic_read(&priv->intr_mask);
915 rmb();
916
917 iowrite32(intr_mask, port_base + IntrMask);
918 mmiowb();
919
920 return IRQ_NONE;
921 }
922
923 static struct net_device_stats *sc92031_get_stats(struct net_device *dev)
924 {
925 struct sc92031_priv *priv = netdev_priv(dev);
926 void __iomem *port_base = priv->port_base;
927
928 // FIXME I do not understand what is this trying to do.
929 if (netif_running(dev)) {
930 int temp;
931
932 spin_lock_bh(&priv->lock);
933
934 /* Update the error count. */
935 temp = (ioread32(port_base + RxStatus0) >> 16) & 0xffff;
936
937 if (temp == 0xffff) {
938 priv->rx_value += temp;
939 priv->stats.rx_fifo_errors = priv->rx_value;
940 } else {
941 priv->stats.rx_fifo_errors = temp + priv->rx_value;
942 }
943
944 spin_unlock_bh(&priv->lock);
945 }
946
947 return &priv->stats;
948 }
949
950 static int sc92031_start_xmit(struct sk_buff *skb, struct net_device *dev)
951 {
952 int err = 0;
953 struct sc92031_priv *priv = netdev_priv(dev);
954 void __iomem *port_base = priv->port_base;
955
956 unsigned len;
957 unsigned entry;
958 u32 tx_status;
959
960 if (unlikely(skb->len > TX_BUF_SIZE)) {
961 err = -EMSGSIZE;
962 priv->stats.tx_dropped++;
963 goto out;
964 }
965
966 spin_lock(&priv->lock);
967
968 if (unlikely(!netif_carrier_ok(dev))) {
969 err = -ENOLINK;
970 priv->stats.tx_dropped++;
971 goto out_unlock;
972 }
973
974 BUG_ON(priv->tx_head - priv->tx_tail >= NUM_TX_DESC);
975
976 entry = priv->tx_head++ % NUM_TX_DESC;
977
978 skb_copy_and_csum_dev(skb, priv->tx_bufs + entry * TX_BUF_SIZE);
979
980 len = skb->len;
981 if (unlikely(len < ETH_ZLEN)) {
982 memset(priv->tx_bufs + entry * TX_BUF_SIZE + len,
983 0, ETH_ZLEN - len);
984 len = ETH_ZLEN;
985 }
986
987 wmb();
988
989 if (len < 100)
990 tx_status = len;
991 else if (len < 300)
992 tx_status = 0x30000 | len;
993 else
994 tx_status = 0x50000 | len;
995
996 iowrite32(priv->tx_bufs_dma_addr + entry * TX_BUF_SIZE,
997 port_base + TxAddr0 + entry * 4);
998 iowrite32(tx_status, port_base + TxStatus0 + entry * 4);
999 mmiowb();
1000
1001 dev->trans_start = jiffies;
1002
1003 if (priv->tx_head - priv->tx_tail >= NUM_TX_DESC)
1004 netif_stop_queue(dev);
1005
1006 out_unlock:
1007 spin_unlock(&priv->lock);
1008
1009 out:
1010 dev_kfree_skb(skb);
1011
1012 return err;
1013 }
1014
1015 static int sc92031_open(struct net_device *dev)
1016 {
1017 int err;
1018 struct sc92031_priv *priv = netdev_priv(dev);
1019 struct pci_dev *pdev = priv->pdev;
1020
1021 priv->rx_ring = pci_alloc_consistent(pdev, RX_BUF_LEN,
1022 &priv->rx_ring_dma_addr);
1023 if (unlikely(!priv->rx_ring)) {
1024 err = -ENOMEM;
1025 goto out_alloc_rx_ring;
1026 }
1027
1028 priv->tx_bufs = pci_alloc_consistent(pdev, TX_BUF_TOT_LEN,
1029 &priv->tx_bufs_dma_addr);
1030 if (unlikely(!priv->tx_bufs)) {
1031 err = -ENOMEM;
1032 goto out_alloc_tx_bufs;
1033 }
1034 priv->tx_head = priv->tx_tail = 0;
1035
1036 err = request_irq(pdev->irq, sc92031_interrupt,
1037 IRQF_SHARED, dev->name, dev);
1038 if (unlikely(err < 0))
1039 goto out_request_irq;
1040
1041 priv->pm_config = 0;
1042
1043 /* Interrupts already disabled by sc92031_stop or sc92031_probe */
1044 spin_lock_bh(&priv->lock);
1045
1046 _sc92031_reset(dev);
1047 mmiowb();
1048
1049 spin_unlock_bh(&priv->lock);
1050 sc92031_enable_interrupts(dev);
1051
1052 if (netif_carrier_ok(dev))
1053 netif_start_queue(dev);
1054 else
1055 netif_tx_disable(dev);
1056
1057 return 0;
1058
1059 out_request_irq:
1060 pci_free_consistent(pdev, TX_BUF_TOT_LEN, priv->tx_bufs,
1061 priv->tx_bufs_dma_addr);
1062 out_alloc_tx_bufs:
1063 pci_free_consistent(pdev, RX_BUF_LEN, priv->rx_ring,
1064 priv->rx_ring_dma_addr);
1065 out_alloc_rx_ring:
1066 return err;
1067 }
1068
1069 static int sc92031_stop(struct net_device *dev)
1070 {
1071 struct sc92031_priv *priv = netdev_priv(dev);
1072 struct pci_dev *pdev = priv->pdev;
1073
1074 netif_tx_disable(dev);
1075
1076 /* Disable interrupts, stop Tx and Rx. */
1077 sc92031_disable_interrupts(dev);
1078
1079 spin_lock_bh(&priv->lock);
1080
1081 _sc92031_disable_tx_rx(dev);
1082 _sc92031_tx_clear(dev);
1083 mmiowb();
1084
1085 spin_unlock_bh(&priv->lock);
1086
1087 free_irq(pdev->irq, dev);
1088 pci_free_consistent(pdev, TX_BUF_TOT_LEN, priv->tx_bufs,
1089 priv->tx_bufs_dma_addr);
1090 pci_free_consistent(pdev, RX_BUF_LEN, priv->rx_ring,
1091 priv->rx_ring_dma_addr);
1092
1093 return 0;
1094 }
1095
1096 static void sc92031_set_multicast_list(struct net_device *dev)
1097 {
1098 struct sc92031_priv *priv = netdev_priv(dev);
1099
1100 spin_lock_bh(&priv->lock);
1101
1102 _sc92031_set_mar(dev);
1103 _sc92031_set_rx_config(dev);
1104 mmiowb();
1105
1106 spin_unlock_bh(&priv->lock);
1107 }
1108
1109 static void sc92031_tx_timeout(struct net_device *dev)
1110 {
1111 struct sc92031_priv *priv = netdev_priv(dev);
1112
1113 /* Disable interrupts by clearing the interrupt mask.*/
1114 sc92031_disable_interrupts(dev);
1115
1116 spin_lock(&priv->lock);
1117
1118 priv->tx_timeouts++;
1119
1120 _sc92031_reset(dev);
1121 mmiowb();
1122
1123 spin_unlock(&priv->lock);
1124
1125 /* enable interrupts */
1126 sc92031_enable_interrupts(dev);
1127
1128 if (netif_carrier_ok(dev))
1129 netif_wake_queue(dev);
1130 }
1131
1132 #ifdef CONFIG_NET_POLL_CONTROLLER
1133 static void sc92031_poll_controller(struct net_device *dev)
1134 {
1135 disable_irq(dev->irq);
1136 if (sc92031_interrupt(dev->irq, dev) != IRQ_NONE)
1137 sc92031_tasklet((unsigned long)dev);
1138 enable_irq(dev->irq);
1139 }
1140 #endif
1141
1142 static int sc92031_ethtool_get_settings(struct net_device *dev,
1143 struct ethtool_cmd *cmd)
1144 {
1145 struct sc92031_priv *priv = netdev_priv(dev);
1146 void __iomem *port_base = priv->port_base;
1147 u8 phy_address;
1148 u32 phy_ctrl;
1149 u16 output_status;
1150
1151 spin_lock_bh(&priv->lock);
1152
1153 phy_address = ioread32(port_base + Miicmd1) >> 27;
1154 phy_ctrl = ioread32(port_base + PhyCtrl);
1155
1156 output_status = _sc92031_mii_read(port_base, MII_OutputStatus);
1157 _sc92031_mii_scan(port_base);
1158 mmiowb();
1159
1160 spin_unlock_bh(&priv->lock);
1161
1162 cmd->supported = SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full
1163 | SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full
1164 | SUPPORTED_Autoneg | SUPPORTED_TP | SUPPORTED_MII;
1165
1166 cmd->advertising = ADVERTISED_TP | ADVERTISED_MII;
1167
1168 if ((phy_ctrl & (PhyCtrlDux | PhyCtrlSpd100 | PhyCtrlSpd10))
1169 == (PhyCtrlDux | PhyCtrlSpd100 | PhyCtrlSpd10))
1170 cmd->advertising |= ADVERTISED_Autoneg;
1171
1172 if ((phy_ctrl & PhyCtrlSpd10) == PhyCtrlSpd10)
1173 cmd->advertising |= ADVERTISED_10baseT_Half;
1174
1175 if ((phy_ctrl & (PhyCtrlSpd10 | PhyCtrlDux))
1176 == (PhyCtrlSpd10 | PhyCtrlDux))
1177 cmd->advertising |= ADVERTISED_10baseT_Full;
1178
1179 if ((phy_ctrl & PhyCtrlSpd100) == PhyCtrlSpd100)
1180 cmd->advertising |= ADVERTISED_100baseT_Half;
1181
1182 if ((phy_ctrl & (PhyCtrlSpd100 | PhyCtrlDux))
1183 == (PhyCtrlSpd100 | PhyCtrlDux))
1184 cmd->advertising |= ADVERTISED_100baseT_Full;
1185
1186 if (phy_ctrl & PhyCtrlAne)
1187 cmd->advertising |= ADVERTISED_Autoneg;
1188
1189 cmd->speed = (output_status & 0x2) ? SPEED_100 : SPEED_10;
1190 cmd->duplex = (output_status & 0x4) ? DUPLEX_FULL : DUPLEX_HALF;
1191 cmd->port = PORT_MII;
1192 cmd->phy_address = phy_address;
1193 cmd->transceiver = XCVR_INTERNAL;
1194 cmd->autoneg = (phy_ctrl & PhyCtrlAne) ? AUTONEG_ENABLE : AUTONEG_DISABLE;
1195
1196 return 0;
1197 }
1198
1199 static int sc92031_ethtool_set_settings(struct net_device *dev,
1200 struct ethtool_cmd *cmd)
1201 {
1202 struct sc92031_priv *priv = netdev_priv(dev);
1203 void __iomem *port_base = priv->port_base;
1204 u32 phy_ctrl;
1205 u32 old_phy_ctrl;
1206
1207 if (!(cmd->speed == SPEED_10 || cmd->speed == SPEED_100))
1208 return -EINVAL;
1209 if (!(cmd->duplex == DUPLEX_HALF || cmd->duplex == DUPLEX_FULL))
1210 return -EINVAL;
1211 if (!(cmd->port == PORT_MII))
1212 return -EINVAL;
1213 if (!(cmd->phy_address == 0x1f))
1214 return -EINVAL;
1215 if (!(cmd->transceiver == XCVR_INTERNAL))
1216 return -EINVAL;
1217 if (!(cmd->autoneg == AUTONEG_DISABLE || cmd->autoneg == AUTONEG_ENABLE))
1218 return -EINVAL;
1219
1220 if (cmd->autoneg == AUTONEG_ENABLE) {
1221 if (!(cmd->advertising & (ADVERTISED_Autoneg
1222 | ADVERTISED_100baseT_Full
1223 | ADVERTISED_100baseT_Half
1224 | ADVERTISED_10baseT_Full
1225 | ADVERTISED_10baseT_Half)))
1226 return -EINVAL;
1227
1228 phy_ctrl = PhyCtrlAne;
1229
1230 // FIXME: I'm not sure what the original code was trying to do
1231 if (cmd->advertising & ADVERTISED_Autoneg)
1232 phy_ctrl |= PhyCtrlDux | PhyCtrlSpd100 | PhyCtrlSpd10;
1233 if (cmd->advertising & ADVERTISED_100baseT_Full)
1234 phy_ctrl |= PhyCtrlDux | PhyCtrlSpd100;
1235 if (cmd->advertising & ADVERTISED_100baseT_Half)
1236 phy_ctrl |= PhyCtrlSpd100;
1237 if (cmd->advertising & ADVERTISED_10baseT_Full)
1238 phy_ctrl |= PhyCtrlSpd10 | PhyCtrlDux;
1239 if (cmd->advertising & ADVERTISED_10baseT_Half)
1240 phy_ctrl |= PhyCtrlSpd10;
1241 } else {
1242 // FIXME: Whole branch guessed
1243 phy_ctrl = 0;
1244
1245 if (cmd->speed == SPEED_10)
1246 phy_ctrl |= PhyCtrlSpd10;
1247 else /* cmd->speed == SPEED_100 */
1248 phy_ctrl |= PhyCtrlSpd100;
1249
1250 if (cmd->duplex == DUPLEX_FULL)
1251 phy_ctrl |= PhyCtrlDux;
1252 }
1253
1254 spin_lock_bh(&priv->lock);
1255
1256 old_phy_ctrl = ioread32(port_base + PhyCtrl);
1257 phy_ctrl |= old_phy_ctrl & ~(PhyCtrlAne | PhyCtrlDux
1258 | PhyCtrlSpd100 | PhyCtrlSpd10);
1259 if (phy_ctrl != old_phy_ctrl)
1260 iowrite32(phy_ctrl, port_base + PhyCtrl);
1261
1262 spin_unlock_bh(&priv->lock);
1263
1264 return 0;
1265 }
1266
1267 static void sc92031_ethtool_get_drvinfo(struct net_device *dev,
1268 struct ethtool_drvinfo *drvinfo)
1269 {
1270 struct sc92031_priv *priv = netdev_priv(dev);
1271 struct pci_dev *pdev = priv->pdev;
1272
1273 strcpy(drvinfo->driver, SC92031_NAME);
1274 strcpy(drvinfo->version, SC92031_VERSION);
1275 strcpy(drvinfo->bus_info, pci_name(pdev));
1276 }
1277
1278 static void sc92031_ethtool_get_wol(struct net_device *dev,
1279 struct ethtool_wolinfo *wolinfo)
1280 {
1281 struct sc92031_priv *priv = netdev_priv(dev);
1282 void __iomem *port_base = priv->port_base;
1283 u32 pm_config;
1284
1285 spin_lock_bh(&priv->lock);
1286 pm_config = ioread32(port_base + PMConfig);
1287 spin_unlock_bh(&priv->lock);
1288
1289 // FIXME: Guessed
1290 wolinfo->supported = WAKE_PHY | WAKE_MAGIC
1291 | WAKE_UCAST | WAKE_MCAST | WAKE_BCAST;
1292 wolinfo->wolopts = 0;
1293
1294 if (pm_config & PM_LinkUp)
1295 wolinfo->wolopts |= WAKE_PHY;
1296
1297 if (pm_config & PM_Magic)
1298 wolinfo->wolopts |= WAKE_MAGIC;
1299
1300 if (pm_config & PM_WakeUp)
1301 // FIXME: Guessed
1302 wolinfo->wolopts |= WAKE_UCAST | WAKE_MCAST | WAKE_BCAST;
1303 }
1304
1305 static int sc92031_ethtool_set_wol(struct net_device *dev,
1306 struct ethtool_wolinfo *wolinfo)
1307 {
1308 struct sc92031_priv *priv = netdev_priv(dev);
1309 void __iomem *port_base = priv->port_base;
1310 u32 pm_config;
1311
1312 spin_lock_bh(&priv->lock);
1313
1314 pm_config = ioread32(port_base + PMConfig)
1315 & ~(PM_LinkUp | PM_Magic | PM_WakeUp);
1316
1317 if (wolinfo->wolopts & WAKE_PHY)
1318 pm_config |= PM_LinkUp;
1319
1320 if (wolinfo->wolopts & WAKE_MAGIC)
1321 pm_config |= PM_Magic;
1322
1323 // FIXME: Guessed
1324 if (wolinfo->wolopts & (WAKE_UCAST | WAKE_MCAST | WAKE_BCAST))
1325 pm_config |= PM_WakeUp;
1326
1327 priv->pm_config = pm_config;
1328 iowrite32(pm_config, port_base + PMConfig);
1329 mmiowb();
1330
1331 spin_unlock_bh(&priv->lock);
1332
1333 return 0;
1334 }
1335
1336 static int sc92031_ethtool_nway_reset(struct net_device *dev)
1337 {
1338 int err = 0;
1339 struct sc92031_priv *priv = netdev_priv(dev);
1340 void __iomem *port_base = priv->port_base;
1341 u16 bmcr;
1342
1343 spin_lock_bh(&priv->lock);
1344
1345 bmcr = _sc92031_mii_read(port_base, MII_BMCR);
1346 if (!(bmcr & BMCR_ANENABLE)) {
1347 err = -EINVAL;
1348 goto out;
1349 }
1350
1351 _sc92031_mii_write(port_base, MII_BMCR, bmcr | BMCR_ANRESTART);
1352
1353 out:
1354 _sc92031_mii_scan(port_base);
1355 mmiowb();
1356
1357 spin_unlock_bh(&priv->lock);
1358
1359 return err;
1360 }
1361
1362 static const char sc92031_ethtool_stats_strings[SILAN_STATS_NUM][ETH_GSTRING_LEN] = {
1363 "tx_timeout",
1364 "rx_loss",
1365 };
1366
1367 static void sc92031_ethtool_get_strings(struct net_device *dev,
1368 u32 stringset, u8 *data)
1369 {
1370 if (stringset == ETH_SS_STATS)
1371 memcpy(data, sc92031_ethtool_stats_strings,
1372 SILAN_STATS_NUM * ETH_GSTRING_LEN);
1373 }
1374
1375 static int sc92031_ethtool_get_sset_count(struct net_device *dev, int sset)
1376 {
1377 switch (sset) {
1378 case ETH_SS_STATS:
1379 return SILAN_STATS_NUM;
1380 default:
1381 return -EOPNOTSUPP;
1382 }
1383 }
1384
1385 static void sc92031_ethtool_get_ethtool_stats(struct net_device *dev,
1386 struct ethtool_stats *stats, u64 *data)
1387 {
1388 struct sc92031_priv *priv = netdev_priv(dev);
1389
1390 spin_lock_bh(&priv->lock);
1391 data[0] = priv->tx_timeouts;
1392 data[1] = priv->rx_loss;
1393 spin_unlock_bh(&priv->lock);
1394 }
1395
1396 static struct ethtool_ops sc92031_ethtool_ops = {
1397 .get_settings = sc92031_ethtool_get_settings,
1398 .set_settings = sc92031_ethtool_set_settings,
1399 .get_drvinfo = sc92031_ethtool_get_drvinfo,
1400 .get_wol = sc92031_ethtool_get_wol,
1401 .set_wol = sc92031_ethtool_set_wol,
1402 .nway_reset = sc92031_ethtool_nway_reset,
1403 .get_link = ethtool_op_get_link,
1404 .get_strings = sc92031_ethtool_get_strings,
1405 .get_sset_count = sc92031_ethtool_get_sset_count,
1406 .get_ethtool_stats = sc92031_ethtool_get_ethtool_stats,
1407 };
1408
1409 static int __devinit sc92031_probe(struct pci_dev *pdev,
1410 const struct pci_device_id *id)
1411 {
1412 int err;
1413 void __iomem* port_base;
1414 struct net_device *dev;
1415 struct sc92031_priv *priv;
1416 u32 mac0, mac1;
1417
1418 err = pci_enable_device(pdev);
1419 if (unlikely(err < 0))
1420 goto out_enable_device;
1421
1422 pci_set_master(pdev);
1423
1424 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
1425 if (unlikely(err < 0))
1426 goto out_set_dma_mask;
1427
1428 err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
1429 if (unlikely(err < 0))
1430 goto out_set_dma_mask;
1431
1432 err = pci_request_regions(pdev, SC92031_NAME);
1433 if (unlikely(err < 0))
1434 goto out_request_regions;
1435
1436 port_base = pci_iomap(pdev, SC92031_USE_BAR, 0);
1437 if (unlikely(!port_base)) {
1438 err = -EIO;
1439 goto out_iomap;
1440 }
1441
1442 dev = alloc_etherdev(sizeof(struct sc92031_priv));
1443 if (unlikely(!dev)) {
1444 err = -ENOMEM;
1445 goto out_alloc_etherdev;
1446 }
1447
1448 pci_set_drvdata(pdev, dev);
1449
1450 #if SC92031_USE_BAR == 0
1451 dev->mem_start = pci_resource_start(pdev, SC92031_USE_BAR);
1452 dev->mem_end = pci_resource_end(pdev, SC92031_USE_BAR);
1453 #elif SC92031_USE_BAR == 1
1454 dev->base_addr = pci_resource_start(pdev, SC92031_USE_BAR);
1455 #endif
1456 dev->irq = pdev->irq;
1457
1458 /* faked with skb_copy_and_csum_dev */
1459 dev->features = NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_HIGHDMA;
1460
1461 dev->get_stats = sc92031_get_stats;
1462 dev->ethtool_ops = &sc92031_ethtool_ops;
1463 dev->hard_start_xmit = sc92031_start_xmit;
1464 dev->watchdog_timeo = TX_TIMEOUT;
1465 dev->open = sc92031_open;
1466 dev->stop = sc92031_stop;
1467 dev->set_multicast_list = sc92031_set_multicast_list;
1468 dev->tx_timeout = sc92031_tx_timeout;
1469 #ifdef CONFIG_NET_POLL_CONTROLLER
1470 dev->poll_controller = sc92031_poll_controller;
1471 #endif
1472
1473 priv = netdev_priv(dev);
1474 spin_lock_init(&priv->lock);
1475 priv->port_base = port_base;
1476 priv->pdev = pdev;
1477 tasklet_init(&priv->tasklet, sc92031_tasklet, (unsigned long)dev);
1478 /* Fudge tasklet count so the call to sc92031_enable_interrupts at
1479 * sc92031_open will work correctly */
1480 tasklet_disable_nosync(&priv->tasklet);
1481
1482 /* PCI PM Wakeup */
1483 iowrite32((~PM_LongWF & ~PM_LWPTN) | PM_Enable, port_base + PMConfig);
1484
1485 mac0 = ioread32(port_base + MAC0);
1486 mac1 = ioread32(port_base + MAC0 + 4);
1487 dev->dev_addr[0] = dev->perm_addr[0] = mac0 >> 24;
1488 dev->dev_addr[1] = dev->perm_addr[1] = mac0 >> 16;
1489 dev->dev_addr[2] = dev->perm_addr[2] = mac0 >> 8;
1490 dev->dev_addr[3] = dev->perm_addr[3] = mac0;
1491 dev->dev_addr[4] = dev->perm_addr[4] = mac1 >> 8;
1492 dev->dev_addr[5] = dev->perm_addr[5] = mac1;
1493
1494 err = register_netdev(dev);
1495 if (err < 0)
1496 goto out_register_netdev;
1497
1498 return 0;
1499
1500 out_register_netdev:
1501 free_netdev(dev);
1502 out_alloc_etherdev:
1503 pci_iounmap(pdev, port_base);
1504 out_iomap:
1505 pci_release_regions(pdev);
1506 out_request_regions:
1507 out_set_dma_mask:
1508 pci_disable_device(pdev);
1509 out_enable_device:
1510 return err;
1511 }
1512
1513 static void __devexit sc92031_remove(struct pci_dev *pdev)
1514 {
1515 struct net_device *dev = pci_get_drvdata(pdev);
1516 struct sc92031_priv *priv = netdev_priv(dev);
1517 void __iomem* port_base = priv->port_base;
1518
1519 unregister_netdev(dev);
1520 free_netdev(dev);
1521 pci_iounmap(pdev, port_base);
1522 pci_release_regions(pdev);
1523 pci_disable_device(pdev);
1524 }
1525
1526 static int sc92031_suspend(struct pci_dev *pdev, pm_message_t state)
1527 {
1528 struct net_device *dev = pci_get_drvdata(pdev);
1529 struct sc92031_priv *priv = netdev_priv(dev);
1530
1531 pci_save_state(pdev);
1532
1533 if (!netif_running(dev))
1534 goto out;
1535
1536 netif_device_detach(dev);
1537
1538 /* Disable interrupts, stop Tx and Rx. */
1539 sc92031_disable_interrupts(dev);
1540
1541 spin_lock_bh(&priv->lock);
1542
1543 _sc92031_disable_tx_rx(dev);
1544 _sc92031_tx_clear(dev);
1545 mmiowb();
1546
1547 spin_unlock_bh(&priv->lock);
1548
1549 out:
1550 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1551
1552 return 0;
1553 }
1554
1555 static int sc92031_resume(struct pci_dev *pdev)
1556 {
1557 struct net_device *dev = pci_get_drvdata(pdev);
1558 struct sc92031_priv *priv = netdev_priv(dev);
1559
1560 pci_restore_state(pdev);
1561 pci_set_power_state(pdev, PCI_D0);
1562
1563 if (!netif_running(dev))
1564 goto out;
1565
1566 /* Interrupts already disabled by sc92031_suspend */
1567 spin_lock_bh(&priv->lock);
1568
1569 _sc92031_reset(dev);
1570 mmiowb();
1571
1572 spin_unlock_bh(&priv->lock);
1573 sc92031_enable_interrupts(dev);
1574
1575 netif_device_attach(dev);
1576
1577 if (netif_carrier_ok(dev))
1578 netif_wake_queue(dev);
1579 else
1580 netif_tx_disable(dev);
1581
1582 out:
1583 return 0;
1584 }
1585
1586 static struct pci_device_id sc92031_pci_device_id_table[] __devinitdata = {
1587 { PCI_DEVICE(PCI_VENDOR_ID_SILAN, PCI_DEVICE_ID_SILAN_SC92031) },
1588 { PCI_DEVICE(PCI_VENDOR_ID_SILAN, PCI_DEVICE_ID_SILAN_8139D) },
1589 { 0, }
1590 };
1591 MODULE_DEVICE_TABLE(pci, sc92031_pci_device_id_table);
1592
1593 static struct pci_driver sc92031_pci_driver = {
1594 .name = SC92031_NAME,
1595 .id_table = sc92031_pci_device_id_table,
1596 .probe = sc92031_probe,
1597 .remove = __devexit_p(sc92031_remove),
1598 .suspend = sc92031_suspend,
1599 .resume = sc92031_resume,
1600 };
1601
1602 static int __init sc92031_init(void)
1603 {
1604 printk(KERN_INFO SC92031_DESCRIPTION " " SC92031_VERSION "\n");
1605 return pci_register_driver(&sc92031_pci_driver);
1606 }
1607
1608 static void __exit sc92031_exit(void)
1609 {
1610 pci_unregister_driver(&sc92031_pci_driver);
1611 }
1612
1613 module_init(sc92031_init);
1614 module_exit(sc92031_exit);
1615
1616 MODULE_LICENSE("GPL");
1617 MODULE_AUTHOR("Cesar Eduardo Barros <cesarb@cesarb.net>");
1618 MODULE_DESCRIPTION(SC92031_DESCRIPTION);
1619 MODULE_VERSION(SC92031_VERSION);
WRT350N Kernel Patches