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Full support for Ginger Console
[linux-ginger.git] / drivers / net / sc92031.c
blob8d6030022d1426604e544c3b3b55402d5360eb01
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 * A datasheet for this chip can be found at
18 * http://www.silan.com.cn/english/products/pdf/SC92031AY.pdf
19 */
20
21 /* Note about set_mac_address: I don't know how to change the hardware
22 * matching, so you need to enable IFF_PROMISC when using it.
23 */
24
25 #include <linux/module.h>
26 #include <linux/kernel.h>
27 #include <linux/delay.h>
28 #include <linux/pci.h>
29 #include <linux/dma-mapping.h>
30 #include <linux/netdevice.h>
31 #include <linux/etherdevice.h>
32 #include <linux/ethtool.h>
33 #include <linux/crc32.h>
34
35 #include <asm/irq.h>
36
37 #define SC92031_NAME "sc92031"
38
39 /* BAR 0 is MMIO, BAR 1 is PIO */
40 #ifndef SC92031_USE_BAR
41 #define SC92031_USE_BAR 0
42 #endif
43
44 /* Maximum number of multicast addresses to filter (vs. Rx-all-multicast). */
45 static int multicast_filter_limit = 64;
46 module_param(multicast_filter_limit, int, 0);
47 MODULE_PARM_DESC(multicast_filter_limit,
48 "Maximum number of filtered multicast addresses");
49
50 static int media;
51 module_param(media, int, 0);
52 MODULE_PARM_DESC(media, "Media type (0x00 = autodetect,"
53 " 0x01 = 10M half, 0x02 = 10M full,"
54 " 0x04 = 100M half, 0x08 = 100M full)");
55
56 /* Size of the in-memory receive ring. */
57 #define RX_BUF_LEN_IDX 3 /* 0==8K, 1==16K, 2==32K, 3==64K ,4==128K*/
58 #define RX_BUF_LEN (8192 << RX_BUF_LEN_IDX)
59
60 /* Number of Tx descriptor registers. */
61 #define NUM_TX_DESC 4
62
63 /* max supported ethernet frame size -- must be at least (dev->mtu+14+4).*/
64 #define MAX_ETH_FRAME_SIZE 1536
65
66 /* Size of the Tx bounce buffers -- must be at least (dev->mtu+14+4). */
67 #define TX_BUF_SIZE MAX_ETH_FRAME_SIZE
68 #define TX_BUF_TOT_LEN (TX_BUF_SIZE * NUM_TX_DESC)
69
70 /* The following settings are log_2(bytes)-4: 0 == 16 bytes .. 6==1024, 7==end of packet. */
71 #define RX_FIFO_THRESH 7 /* Rx buffer level before first PCI xfer. */
72
73 /* Time in jiffies before concluding the transmitter is hung. */
74 #define TX_TIMEOUT (4*HZ)
75
76 #define SILAN_STATS_NUM 2 /* number of ETHTOOL_GSTATS */
77
78 /* media options */
79 #define AUTOSELECT 0x00
80 #define M10_HALF 0x01
81 #define M10_FULL 0x02
82 #define M100_HALF 0x04
83 #define M100_FULL 0x08
84
85 /* Symbolic offsets to registers. */
86 enum silan_registers {
87 Config0 = 0x00, // Config0
88 Config1 = 0x04, // Config1
89 RxBufWPtr = 0x08, // Rx buffer writer poiter
90 IntrStatus = 0x0C, // Interrupt status
91 IntrMask = 0x10, // Interrupt mask
92 RxbufAddr = 0x14, // Rx buffer start address
93 RxBufRPtr = 0x18, // Rx buffer read pointer
94 Txstatusall = 0x1C, // Transmit status of all descriptors
95 TxStatus0 = 0x20, // Transmit status (Four 32bit registers).
96 TxAddr0 = 0x30, // Tx descriptors (also four 32bit).
97 RxConfig = 0x40, // Rx configuration
98 MAC0 = 0x44, // Ethernet hardware address.
99 MAR0 = 0x4C, // Multicast filter.
100 RxStatus0 = 0x54, // Rx status
101 TxConfig = 0x5C, // Tx configuration
102 PhyCtrl = 0x60, // physical control
103 FlowCtrlConfig = 0x64, // flow control
104 Miicmd0 = 0x68, // Mii command0 register
105 Miicmd1 = 0x6C, // Mii command1 register
106 Miistatus = 0x70, // Mii status register
107 Timercnt = 0x74, // Timer counter register
108 TimerIntr = 0x78, // Timer interrupt register
109 PMConfig = 0x7C, // Power Manager configuration
110 CRC0 = 0x80, // Power Manager CRC ( Two 32bit regisers)
111 Wakeup0 = 0x88, // power Manager wakeup( Eight 64bit regiser)
112 LSBCRC0 = 0xC8, // power Manager LSBCRC(Two 32bit regiser)
113 TestD0 = 0xD0,
114 TestD4 = 0xD4,
115 TestD8 = 0xD8,
116 };
117
118 #define MII_BMCR 0 // Basic mode control register
119 #define MII_BMSR 1 // Basic mode status register
120 #define MII_JAB 16
121 #define MII_OutputStatus 24
122
123 #define BMCR_FULLDPLX 0x0100 // Full duplex
124 #define BMCR_ANRESTART 0x0200 // Auto negotiation restart
125 #define BMCR_ANENABLE 0x1000 // Enable auto negotiation
126 #define BMCR_SPEED100 0x2000 // Select 100Mbps
127 #define BMSR_LSTATUS 0x0004 // Link status
128 #define PHY_16_JAB_ENB 0x1000
129 #define PHY_16_PORT_ENB 0x1
130
131 enum IntrStatusBits {
132 LinkFail = 0x80000000,
133 LinkOK = 0x40000000,
134 TimeOut = 0x20000000,
135 RxOverflow = 0x0040,
136 RxOK = 0x0020,
137 TxOK = 0x0001,
138 IntrBits = LinkFail|LinkOK|TimeOut|RxOverflow|RxOK|TxOK,
139 };
140
141 enum TxStatusBits {
142 TxCarrierLost = 0x20000000,
143 TxAborted = 0x10000000,
144 TxOutOfWindow = 0x08000000,
145 TxNccShift = 22,
146 EarlyTxThresShift = 16,
147 TxStatOK = 0x8000,
148 TxUnderrun = 0x4000,
149 TxOwn = 0x2000,
150 };
151
152 enum RxStatusBits {
153 RxStatesOK = 0x80000,
154 RxBadAlign = 0x40000,
155 RxHugeFrame = 0x20000,
156 RxSmallFrame = 0x10000,
157 RxCRCOK = 0x8000,
158 RxCrlFrame = 0x4000,
159 Rx_Broadcast = 0x2000,
160 Rx_Multicast = 0x1000,
161 RxAddrMatch = 0x0800,
162 MiiErr = 0x0400,
163 };
164
165 enum RxConfigBits {
166 RxFullDx = 0x80000000,
167 RxEnb = 0x40000000,
168 RxSmall = 0x20000000,
169 RxHuge = 0x10000000,
170 RxErr = 0x08000000,
171 RxAllphys = 0x04000000,
172 RxMulticast = 0x02000000,
173 RxBroadcast = 0x01000000,
174 RxLoopBack = (1 << 23) | (1 << 22),
175 LowThresholdShift = 12,
176 HighThresholdShift = 2,
177 };
178
179 enum TxConfigBits {
180 TxFullDx = 0x80000000,
181 TxEnb = 0x40000000,
182 TxEnbPad = 0x20000000,
183 TxEnbHuge = 0x10000000,
184 TxEnbFCS = 0x08000000,
185 TxNoBackOff = 0x04000000,
186 TxEnbPrem = 0x02000000,
187 TxCareLostCrs = 0x1000000,
188 TxExdCollNum = 0xf00000,
189 TxDataRate = 0x80000,
190 };
191
192 enum PhyCtrlconfigbits {
193 PhyCtrlAne = 0x80000000,
194 PhyCtrlSpd100 = 0x40000000,
195 PhyCtrlSpd10 = 0x20000000,
196 PhyCtrlPhyBaseAddr = 0x1f000000,
197 PhyCtrlDux = 0x800000,
198 PhyCtrlReset = 0x400000,
199 };
200
201 enum FlowCtrlConfigBits {
202 FlowCtrlFullDX = 0x80000000,
203 FlowCtrlEnb = 0x40000000,
204 };
205
206 enum Config0Bits {
207 Cfg0_Reset = 0x80000000,
208 Cfg0_Anaoff = 0x40000000,
209 Cfg0_LDPS = 0x20000000,
210 };
211
212 enum Config1Bits {
213 Cfg1_EarlyRx = 1 << 31,
214 Cfg1_EarlyTx = 1 << 30,
215
216 //rx buffer size
217 Cfg1_Rcv8K = 0x0,
218 Cfg1_Rcv16K = 0x1,
219 Cfg1_Rcv32K = 0x3,
220 Cfg1_Rcv64K = 0x7,
221 Cfg1_Rcv128K = 0xf,
222 };
223
224 enum MiiCmd0Bits {
225 Mii_Divider = 0x20000000,
226 Mii_WRITE = 0x400000,
227 Mii_READ = 0x200000,
228 Mii_SCAN = 0x100000,
229 Mii_Tamod = 0x80000,
230 Mii_Drvmod = 0x40000,
231 Mii_mdc = 0x20000,
232 Mii_mdoen = 0x10000,
233 Mii_mdo = 0x8000,
234 Mii_mdi = 0x4000,
235 };
236
237 enum MiiStatusBits {
238 Mii_StatusBusy = 0x80000000,
239 };
240
241 enum PMConfigBits {
242 PM_Enable = 1 << 31,
243 PM_LongWF = 1 << 30,
244 PM_Magic = 1 << 29,
245 PM_LANWake = 1 << 28,
246 PM_LWPTN = (1 << 27 | 1<< 26),
247 PM_LinkUp = 1 << 25,
248 PM_WakeUp = 1 << 24,
249 };
250
251 /* Locking rules:
252 * priv->lock protects most of the fields of priv and most of the
253 * hardware registers. It does not have to protect against softirqs
254 * between sc92031_disable_interrupts and sc92031_enable_interrupts;
255 * it also does not need to be used in ->open and ->stop while the
256 * device interrupts are off.
257 * Not having to protect against softirqs is very useful due to heavy
258 * use of mdelay() at _sc92031_reset.
259 * Functions prefixed with _sc92031_ must be called with the lock held;
260 * functions prefixed with sc92031_ must be called without the lock held.
261 * Use mmiowb() before unlocking if the hardware was written to.
262 */
263
264 /* Locking rules for the interrupt:
265 * - the interrupt and the tasklet never run at the same time
266 * - neither run between sc92031_disable_interrupts and
267 * sc92031_enable_interrupt
268 */
269
270 struct sc92031_priv {
271 spinlock_t lock;
272 /* iomap.h cookie */
273 void __iomem *port_base;
274 /* pci device structure */
275 struct pci_dev *pdev;
276 /* tasklet */
277 struct tasklet_struct tasklet;
278
279 /* CPU address of rx ring */
280 void *rx_ring;
281 /* PCI address of rx ring */
282 dma_addr_t rx_ring_dma_addr;
283 /* PCI address of rx ring read pointer */
284 dma_addr_t rx_ring_tail;
285
286 /* tx ring write index */
287 unsigned tx_head;
288 /* tx ring read index */
289 unsigned tx_tail;
290 /* CPU address of tx bounce buffer */
291 void *tx_bufs;
292 /* PCI address of tx bounce buffer */
293 dma_addr_t tx_bufs_dma_addr;
294
295 /* copies of some hardware registers */
296 u32 intr_status;
297 atomic_t intr_mask;
298 u32 rx_config;
299 u32 tx_config;
300 u32 pm_config;
301
302 /* copy of some flags from dev->flags */
303 unsigned int mc_flags;
304
305 /* for ETHTOOL_GSTATS */
306 u64 tx_timeouts;
307 u64 rx_loss;
308
309 /* for dev->get_stats */
310 long rx_value;
311 };
312
313 /* I don't know which registers can be safely read; however, I can guess
314 * MAC0 is one of them. */
315 static inline void _sc92031_dummy_read(void __iomem *port_base)
316 {
317 ioread32(port_base + MAC0);
318 }
319
320 static u32 _sc92031_mii_wait(void __iomem *port_base)
321 {
322 u32 mii_status;
323
324 do {
325 udelay(10);
326 mii_status = ioread32(port_base + Miistatus);
327 } while (mii_status & Mii_StatusBusy);
328
329 return mii_status;
330 }
331
332 static u32 _sc92031_mii_cmd(void __iomem *port_base, u32 cmd0, u32 cmd1)
333 {
334 iowrite32(Mii_Divider, port_base + Miicmd0);
335
336 _sc92031_mii_wait(port_base);
337
338 iowrite32(cmd1, port_base + Miicmd1);
339 iowrite32(Mii_Divider | cmd0, port_base + Miicmd0);
340
341 return _sc92031_mii_wait(port_base);
342 }
343
344 static void _sc92031_mii_scan(void __iomem *port_base)
345 {
346 _sc92031_mii_cmd(port_base, Mii_SCAN, 0x1 << 6);
347 }
348
349 static u16 _sc92031_mii_read(void __iomem *port_base, unsigned reg)
350 {
351 return _sc92031_mii_cmd(port_base, Mii_READ, reg << 6) >> 13;
352 }
353
354 static void _sc92031_mii_write(void __iomem *port_base, unsigned reg, u16 val)
355 {
356 _sc92031_mii_cmd(port_base, Mii_WRITE, (reg << 6) | ((u32)val << 11));
357 }
358
359 static void sc92031_disable_interrupts(struct net_device *dev)
360 {
361 struct sc92031_priv *priv = netdev_priv(dev);
362 void __iomem *port_base = priv->port_base;
363
364 /* tell the tasklet/interrupt not to enable interrupts */
365 atomic_set(&priv->intr_mask, 0);
366 wmb();
367
368 /* stop interrupts */
369 iowrite32(0, port_base + IntrMask);
370 _sc92031_dummy_read(port_base);
371 mmiowb();
372
373 /* wait for any concurrent interrupt/tasklet to finish */
374 synchronize_irq(dev->irq);
375 tasklet_disable(&priv->tasklet);
376 }
377
378 static void sc92031_enable_interrupts(struct net_device *dev)
379 {
380 struct sc92031_priv *priv = netdev_priv(dev);
381 void __iomem *port_base = priv->port_base;
382
383 tasklet_enable(&priv->tasklet);
384
385 atomic_set(&priv->intr_mask, IntrBits);
386 wmb();
387
388 iowrite32(IntrBits, port_base + IntrMask);
389 mmiowb();
390 }
391
392 static void _sc92031_disable_tx_rx(struct net_device *dev)
393 {
394 struct sc92031_priv *priv = netdev_priv(dev);
395 void __iomem *port_base = priv->port_base;
396
397 priv->rx_config &= ~RxEnb;
398 priv->tx_config &= ~TxEnb;
399 iowrite32(priv->rx_config, port_base + RxConfig);
400 iowrite32(priv->tx_config, port_base + TxConfig);
401 }
402
403 static void _sc92031_enable_tx_rx(struct net_device *dev)
404 {
405 struct sc92031_priv *priv = netdev_priv(dev);
406 void __iomem *port_base = priv->port_base;
407
408 priv->rx_config |= RxEnb;
409 priv->tx_config |= TxEnb;
410 iowrite32(priv->rx_config, port_base + RxConfig);
411 iowrite32(priv->tx_config, port_base + TxConfig);
412 }
413
414 static void _sc92031_tx_clear(struct net_device *dev)
415 {
416 struct sc92031_priv *priv = netdev_priv(dev);
417
418 while (priv->tx_head - priv->tx_tail > 0) {
419 priv->tx_tail++;
420 dev->stats.tx_dropped++;
421 }
422 priv->tx_head = priv->tx_tail = 0;
423 }
424
425 static void _sc92031_set_mar(struct net_device *dev)
426 {
427 struct sc92031_priv *priv = netdev_priv(dev);
428 void __iomem *port_base = priv->port_base;
429 u32 mar0 = 0, mar1 = 0;
430
431 if ((dev->flags & IFF_PROMISC)
432 || dev->mc_count > multicast_filter_limit
433 || (dev->flags & IFF_ALLMULTI))
434 mar0 = mar1 = 0xffffffff;
435 else if (dev->flags & IFF_MULTICAST) {
436 struct dev_mc_list *mc_list;
437
438 for (mc_list = dev->mc_list; mc_list; mc_list = mc_list->next) {
439 u32 crc;
440 unsigned bit = 0;
441
442 crc = ~ether_crc(ETH_ALEN, mc_list->dmi_addr);
443 crc >>= 24;
444
445 if (crc & 0x01) bit |= 0x02;
446 if (crc & 0x02) bit |= 0x01;
447 if (crc & 0x10) bit |= 0x20;
448 if (crc & 0x20) bit |= 0x10;
449 if (crc & 0x40) bit |= 0x08;
450 if (crc & 0x80) bit |= 0x04;
451
452 if (bit > 31)
453 mar0 |= 0x1 << (bit - 32);
454 else
455 mar1 |= 0x1 << bit;
456 }
457 }
458
459 iowrite32(mar0, port_base + MAR0);
460 iowrite32(mar1, port_base + MAR0 + 4);
461 }
462
463 static void _sc92031_set_rx_config(struct net_device *dev)
464 {
465 struct sc92031_priv *priv = netdev_priv(dev);
466 void __iomem *port_base = priv->port_base;
467 unsigned int old_mc_flags;
468 u32 rx_config_bits = 0;
469
470 old_mc_flags = priv->mc_flags;
471
472 if (dev->flags & IFF_PROMISC)
473 rx_config_bits |= RxSmall | RxHuge | RxErr | RxBroadcast
474 | RxMulticast | RxAllphys;
475
476 if (dev->flags & (IFF_ALLMULTI | IFF_MULTICAST))
477 rx_config_bits |= RxMulticast;
478
479 if (dev->flags & IFF_BROADCAST)
480 rx_config_bits |= RxBroadcast;
481
482 priv->rx_config &= ~(RxSmall | RxHuge | RxErr | RxBroadcast
483 | RxMulticast | RxAllphys);
484 priv->rx_config |= rx_config_bits;
485
486 priv->mc_flags = dev->flags & (IFF_PROMISC | IFF_ALLMULTI
487 | IFF_MULTICAST | IFF_BROADCAST);
488
489 if (netif_carrier_ok(dev) && priv->mc_flags != old_mc_flags)
490 iowrite32(priv->rx_config, port_base + RxConfig);
491 }
492
493 static bool _sc92031_check_media(struct net_device *dev)
494 {
495 struct sc92031_priv *priv = netdev_priv(dev);
496 void __iomem *port_base = priv->port_base;
497 u16 bmsr;
498
499 bmsr = _sc92031_mii_read(port_base, MII_BMSR);
500 rmb();
501 if (bmsr & BMSR_LSTATUS) {
502 bool speed_100, duplex_full;
503 u32 flow_ctrl_config = 0;
504 u16 output_status = _sc92031_mii_read(port_base,
505 MII_OutputStatus);
506 _sc92031_mii_scan(port_base);
507
508 speed_100 = output_status & 0x2;
509 duplex_full = output_status & 0x4;
510
511 /* Initial Tx/Rx configuration */
512 priv->rx_config = (0x40 << LowThresholdShift) | (0x1c0 << HighThresholdShift);
513 priv->tx_config = 0x48800000;
514
515 /* NOTE: vendor driver had dead code here to enable tx padding */
516
517 if (!speed_100)
518 priv->tx_config |= 0x80000;
519
520 // configure rx mode
521 _sc92031_set_rx_config(dev);
522
523 if (duplex_full) {
524 priv->rx_config |= RxFullDx;
525 priv->tx_config |= TxFullDx;
526 flow_ctrl_config = FlowCtrlFullDX | FlowCtrlEnb;
527 } else {
528 priv->rx_config &= ~RxFullDx;
529 priv->tx_config &= ~TxFullDx;
530 }
531
532 _sc92031_set_mar(dev);
533 _sc92031_set_rx_config(dev);
534 _sc92031_enable_tx_rx(dev);
535 iowrite32(flow_ctrl_config, port_base + FlowCtrlConfig);
536
537 netif_carrier_on(dev);
538
539 if (printk_ratelimit())
540 printk(KERN_INFO "%s: link up, %sMbps, %s-duplex\n",
541 dev->name,
542 speed_100 ? "100" : "10",
543 duplex_full ? "full" : "half");
544 return true;
545 } else {
546 _sc92031_mii_scan(port_base);
547
548 netif_carrier_off(dev);
549
550 _sc92031_disable_tx_rx(dev);
551
552 if (printk_ratelimit())
553 printk(KERN_INFO "%s: link down\n", dev->name);
554 return false;
555 }
556 }
557
558 static void _sc92031_phy_reset(struct net_device *dev)
559 {
560 struct sc92031_priv *priv = netdev_priv(dev);
561 void __iomem *port_base = priv->port_base;
562 u32 phy_ctrl;
563
564 phy_ctrl = ioread32(port_base + PhyCtrl);
565 phy_ctrl &= ~(PhyCtrlDux | PhyCtrlSpd100 | PhyCtrlSpd10);
566 phy_ctrl |= PhyCtrlAne | PhyCtrlReset;
567
568 switch (media) {
569 default:
570 case AUTOSELECT:
571 phy_ctrl |= PhyCtrlDux | PhyCtrlSpd100 | PhyCtrlSpd10;
572 break;
573 case M10_HALF:
574 phy_ctrl |= PhyCtrlSpd10;
575 break;
576 case M10_FULL:
577 phy_ctrl |= PhyCtrlDux | PhyCtrlSpd10;
578 break;
579 case M100_HALF:
580 phy_ctrl |= PhyCtrlSpd100;
581 break;
582 case M100_FULL:
583 phy_ctrl |= PhyCtrlDux | PhyCtrlSpd100;
584 break;
585 }
586
587 iowrite32(phy_ctrl, port_base + PhyCtrl);
588 mdelay(10);
589
590 phy_ctrl &= ~PhyCtrlReset;
591 iowrite32(phy_ctrl, port_base + PhyCtrl);
592 mdelay(1);
593
594 _sc92031_mii_write(port_base, MII_JAB,
595 PHY_16_JAB_ENB | PHY_16_PORT_ENB);
596 _sc92031_mii_scan(port_base);
597
598 netif_carrier_off(dev);
599 netif_stop_queue(dev);
600 }
601
602 static void _sc92031_reset(struct net_device *dev)
603 {
604 struct sc92031_priv *priv = netdev_priv(dev);
605 void __iomem *port_base = priv->port_base;
606
607 /* disable PM */
608 iowrite32(0, port_base + PMConfig);
609
610 /* soft reset the chip */
611 iowrite32(Cfg0_Reset, port_base + Config0);
612 mdelay(200);
613
614 iowrite32(0, port_base + Config0);
615 mdelay(10);
616
617 /* disable interrupts */
618 iowrite32(0, port_base + IntrMask);
619
620 /* clear multicast address */
621 iowrite32(0, port_base + MAR0);
622 iowrite32(0, port_base + MAR0 + 4);
623
624 /* init rx ring */
625 iowrite32(priv->rx_ring_dma_addr, port_base + RxbufAddr);
626 priv->rx_ring_tail = priv->rx_ring_dma_addr;
627
628 /* init tx ring */
629 _sc92031_tx_clear(dev);
630
631 /* clear old register values */
632 priv->intr_status = 0;
633 atomic_set(&priv->intr_mask, 0);
634 priv->rx_config = 0;
635 priv->tx_config = 0;
636 priv->mc_flags = 0;
637
638 /* configure rx buffer size */
639 /* NOTE: vendor driver had dead code here to enable early tx/rx */
640 iowrite32(Cfg1_Rcv64K, port_base + Config1);
641
642 _sc92031_phy_reset(dev);
643 _sc92031_check_media(dev);
644
645 /* calculate rx fifo overflow */
646 priv->rx_value = 0;
647
648 /* enable PM */
649 iowrite32(priv->pm_config, port_base + PMConfig);
650
651 /* clear intr register */
652 ioread32(port_base + IntrStatus);
653 }
654
655 static void _sc92031_tx_tasklet(struct net_device *dev)
656 {
657 struct sc92031_priv *priv = netdev_priv(dev);
658 void __iomem *port_base = priv->port_base;
659
660 unsigned old_tx_tail;
661 unsigned entry;
662 u32 tx_status;
663
664 old_tx_tail = priv->tx_tail;
665 while (priv->tx_head - priv->tx_tail > 0) {
666 entry = priv->tx_tail % NUM_TX_DESC;
667 tx_status = ioread32(port_base + TxStatus0 + entry * 4);
668
669 if (!(tx_status & (TxStatOK | TxUnderrun | TxAborted)))
670 break;
671
672 priv->tx_tail++;
673
674 if (tx_status & TxStatOK) {
675 dev->stats.tx_bytes += tx_status & 0x1fff;
676 dev->stats.tx_packets++;
677 /* Note: TxCarrierLost is always asserted at 100mbps. */
678 dev->stats.collisions += (tx_status >> 22) & 0xf;
679 }
680
681 if (tx_status & (TxOutOfWindow | TxAborted)) {
682 dev->stats.tx_errors++;
683
684 if (tx_status & TxAborted)
685 dev->stats.tx_aborted_errors++;
686
687 if (tx_status & TxCarrierLost)
688 dev->stats.tx_carrier_errors++;
689
690 if (tx_status & TxOutOfWindow)
691 dev->stats.tx_window_errors++;
692 }
693
694 if (tx_status & TxUnderrun)
695 dev->stats.tx_fifo_errors++;
696 }
697
698 if (priv->tx_tail != old_tx_tail)
699 if (netif_queue_stopped(dev))
700 netif_wake_queue(dev);
701 }
702
703 static void _sc92031_rx_tasklet_error(struct net_device *dev,
704 u32 rx_status, unsigned rx_size)
705 {
706 if(rx_size > (MAX_ETH_FRAME_SIZE + 4) || rx_size < 16) {
707 dev->stats.rx_errors++;
708 dev->stats.rx_length_errors++;
709 }
710
711 if (!(rx_status & RxStatesOK)) {
712 dev->stats.rx_errors++;
713
714 if (rx_status & (RxHugeFrame | RxSmallFrame))
715 dev->stats.rx_length_errors++;
716
717 if (rx_status & RxBadAlign)
718 dev->stats.rx_frame_errors++;
719
720 if (!(rx_status & RxCRCOK))
721 dev->stats.rx_crc_errors++;
722 } else {
723 struct sc92031_priv *priv = netdev_priv(dev);
724 priv->rx_loss++;
725 }
726 }
727
728 static void _sc92031_rx_tasklet(struct net_device *dev)
729 {
730 struct sc92031_priv *priv = netdev_priv(dev);
731 void __iomem *port_base = priv->port_base;
732
733 dma_addr_t rx_ring_head;
734 unsigned rx_len;
735 unsigned rx_ring_offset;
736 void *rx_ring = priv->rx_ring;
737
738 rx_ring_head = ioread32(port_base + RxBufWPtr);
739 rmb();
740
741 /* rx_ring_head is only 17 bits in the RxBufWPtr register.
742 * we need to change it to 32 bits physical address
743 */
744 rx_ring_head &= (dma_addr_t)(RX_BUF_LEN - 1);
745 rx_ring_head |= priv->rx_ring_dma_addr & ~(dma_addr_t)(RX_BUF_LEN - 1);
746 if (rx_ring_head < priv->rx_ring_dma_addr)
747 rx_ring_head += RX_BUF_LEN;
748
749 if (rx_ring_head >= priv->rx_ring_tail)
750 rx_len = rx_ring_head - priv->rx_ring_tail;
751 else
752 rx_len = RX_BUF_LEN - (priv->rx_ring_tail - rx_ring_head);
753
754 if (!rx_len)
755 return;
756
757 if (unlikely(rx_len > RX_BUF_LEN)) {
758 if (printk_ratelimit())
759 printk(KERN_ERR "%s: rx packets length > rx buffer\n",
760 dev->name);
761 return;
762 }
763
764 rx_ring_offset = (priv->rx_ring_tail - priv->rx_ring_dma_addr) % RX_BUF_LEN;
765
766 while (rx_len) {
767 u32 rx_status;
768 unsigned rx_size, rx_size_align, pkt_size;
769 struct sk_buff *skb;
770
771 rx_status = le32_to_cpup((__le32 *)(rx_ring + rx_ring_offset));
772 rmb();
773
774 rx_size = rx_status >> 20;
775 rx_size_align = (rx_size + 3) & ~3; // for 4 bytes aligned
776 pkt_size = rx_size - 4; // Omit the four octet CRC from the length.
777
778 rx_ring_offset = (rx_ring_offset + 4) % RX_BUF_LEN;
779
780 if (unlikely(rx_status == 0
781 || rx_size > (MAX_ETH_FRAME_SIZE + 4)
782 || rx_size < 16
783 || !(rx_status & RxStatesOK))) {
784 _sc92031_rx_tasklet_error(dev, rx_status, rx_size);
785 break;
786 }
787
788 if (unlikely(rx_size_align + 4 > rx_len)) {
789 if (printk_ratelimit())
790 printk(KERN_ERR "%s: rx_len is too small\n", dev->name);
791 break;
792 }
793
794 rx_len -= rx_size_align + 4;
795
796 skb = netdev_alloc_skb(dev, pkt_size + NET_IP_ALIGN);
797 if (unlikely(!skb)) {
798 if (printk_ratelimit())
799 printk(KERN_ERR "%s: Couldn't allocate a skb_buff for a packet of size %u\n",
800 dev->name, pkt_size);
801 goto next;
802 }
803
804 skb_reserve(skb, NET_IP_ALIGN);
805
806 if ((rx_ring_offset + pkt_size) > RX_BUF_LEN) {
807 memcpy(skb_put(skb, RX_BUF_LEN - rx_ring_offset),
808 rx_ring + rx_ring_offset, RX_BUF_LEN - rx_ring_offset);
809 memcpy(skb_put(skb, pkt_size - (RX_BUF_LEN - rx_ring_offset)),
810 rx_ring, pkt_size - (RX_BUF_LEN - rx_ring_offset));
811 } else {
812 memcpy(skb_put(skb, pkt_size), rx_ring + rx_ring_offset, pkt_size);
813 }
814
815 skb->protocol = eth_type_trans(skb, dev);
816 netif_rx(skb);
817
818 dev->stats.rx_bytes += pkt_size;
819 dev->stats.rx_packets++;
820
821 if (rx_status & Rx_Multicast)
822 dev->stats.multicast++;
823
824 next:
825 rx_ring_offset = (rx_ring_offset + rx_size_align) % RX_BUF_LEN;
826 }
827 mb();
828
829 priv->rx_ring_tail = rx_ring_head;
830 iowrite32(priv->rx_ring_tail, port_base + RxBufRPtr);
831 }
832
833 static void _sc92031_link_tasklet(struct net_device *dev)
834 {
835 if (_sc92031_check_media(dev))
836 netif_wake_queue(dev);
837 else {
838 netif_stop_queue(dev);
839 dev->stats.tx_carrier_errors++;
840 }
841 }
842
843 static void sc92031_tasklet(unsigned long data)
844 {
845 struct net_device *dev = (struct net_device *)data;
846 struct sc92031_priv *priv = netdev_priv(dev);
847 void __iomem *port_base = priv->port_base;
848 u32 intr_status, intr_mask;
849
850 intr_status = priv->intr_status;
851
852 spin_lock(&priv->lock);
853
854 if (unlikely(!netif_running(dev)))
855 goto out;
856
857 if (intr_status & TxOK)
858 _sc92031_tx_tasklet(dev);
859
860 if (intr_status & RxOK)
861 _sc92031_rx_tasklet(dev);
862
863 if (intr_status & RxOverflow)
864 dev->stats.rx_errors++;
865
866 if (intr_status & TimeOut) {
867 dev->stats.rx_errors++;
868 dev->stats.rx_length_errors++;
869 }
870
871 if (intr_status & (LinkFail | LinkOK))
872 _sc92031_link_tasklet(dev);
873
874 out:
875 intr_mask = atomic_read(&priv->intr_mask);
876 rmb();
877
878 iowrite32(intr_mask, port_base + IntrMask);
879 mmiowb();
880
881 spin_unlock(&priv->lock);
882 }
883
884 static irqreturn_t sc92031_interrupt(int irq, void *dev_id)
885 {
886 struct net_device *dev = dev_id;
887 struct sc92031_priv *priv = netdev_priv(dev);
888 void __iomem *port_base = priv->port_base;
889 u32 intr_status, intr_mask;
890
891 /* mask interrupts before clearing IntrStatus */
892 iowrite32(0, port_base + IntrMask);
893 _sc92031_dummy_read(port_base);
894
895 intr_status = ioread32(port_base + IntrStatus);
896 if (unlikely(intr_status == 0xffffffff))
897 return IRQ_NONE; // hardware has gone missing
898
899 intr_status &= IntrBits;
900 if (!intr_status)
901 goto out_none;
902
903 priv->intr_status = intr_status;
904 tasklet_schedule(&priv->tasklet);
905
906 return IRQ_HANDLED;
907
908 out_none:
909 intr_mask = atomic_read(&priv->intr_mask);
910 rmb();
911
912 iowrite32(intr_mask, port_base + IntrMask);
913 mmiowb();
914
915 return IRQ_NONE;
916 }
917
918 static struct net_device_stats *sc92031_get_stats(struct net_device *dev)
919 {
920 struct sc92031_priv *priv = netdev_priv(dev);
921 void __iomem *port_base = priv->port_base;
922
923 // FIXME I do not understand what is this trying to do.
924 if (netif_running(dev)) {
925 int temp;
926
927 spin_lock_bh(&priv->lock);
928
929 /* Update the error count. */
930 temp = (ioread32(port_base + RxStatus0) >> 16) & 0xffff;
931
932 if (temp == 0xffff) {
933 priv->rx_value += temp;
934 dev->stats.rx_fifo_errors = priv->rx_value;
935 } else
936 dev->stats.rx_fifo_errors = temp + priv->rx_value;
937
938 spin_unlock_bh(&priv->lock);
939 }
940
941 return &dev->stats;
942 }
943
944 static netdev_tx_t sc92031_start_xmit(struct sk_buff *skb,
945 struct net_device *dev)
946 {
947 struct sc92031_priv *priv = netdev_priv(dev);
948 void __iomem *port_base = priv->port_base;
949 unsigned len;
950 unsigned entry;
951 u32 tx_status;
952
953 if (unlikely(skb->len > TX_BUF_SIZE)) {
954 dev->stats.tx_dropped++;
955 goto out;
956 }
957
958 spin_lock(&priv->lock);
959
960 if (unlikely(!netif_carrier_ok(dev))) {
961 dev->stats.tx_dropped++;
962 goto out_unlock;
963 }
964
965 BUG_ON(priv->tx_head - priv->tx_tail >= NUM_TX_DESC);
966
967 entry = priv->tx_head++ % NUM_TX_DESC;
968
969 skb_copy_and_csum_dev(skb, priv->tx_bufs + entry * TX_BUF_SIZE);
970
971 len = skb->len;
972 if (len < ETH_ZLEN) {
973 memset(priv->tx_bufs + entry * TX_BUF_SIZE + len,
974 0, ETH_ZLEN - len);
975 len = ETH_ZLEN;
976 }
977
978 wmb();
979
980 if (len < 100)
981 tx_status = len;
982 else if (len < 300)
983 tx_status = 0x30000 | len;
984 else
985 tx_status = 0x50000 | len;
986
987 iowrite32(priv->tx_bufs_dma_addr + entry * TX_BUF_SIZE,
988 port_base + TxAddr0 + entry * 4);
989 iowrite32(tx_status, port_base + TxStatus0 + entry * 4);
990 mmiowb();
991
992 dev->trans_start = jiffies;
993
994 if (priv->tx_head - priv->tx_tail >= NUM_TX_DESC)
995 netif_stop_queue(dev);
996
997 out_unlock:
998 spin_unlock(&priv->lock);
999
1000 out:
1001 dev_kfree_skb(skb);
1002
1003 return NETDEV_TX_OK;
1004 }
1005
1006 static int sc92031_open(struct net_device *dev)
1007 {
1008 int err;
1009 struct sc92031_priv *priv = netdev_priv(dev);
1010 struct pci_dev *pdev = priv->pdev;
1011
1012 priv->rx_ring = pci_alloc_consistent(pdev, RX_BUF_LEN,
1013 &priv->rx_ring_dma_addr);
1014 if (unlikely(!priv->rx_ring)) {
1015 err = -ENOMEM;
1016 goto out_alloc_rx_ring;
1017 }
1018
1019 priv->tx_bufs = pci_alloc_consistent(pdev, TX_BUF_TOT_LEN,
1020 &priv->tx_bufs_dma_addr);
1021 if (unlikely(!priv->tx_bufs)) {
1022 err = -ENOMEM;
1023 goto out_alloc_tx_bufs;
1024 }
1025 priv->tx_head = priv->tx_tail = 0;
1026
1027 err = request_irq(pdev->irq, sc92031_interrupt,
1028 IRQF_SHARED, dev->name, dev);
1029 if (unlikely(err < 0))
1030 goto out_request_irq;
1031
1032 priv->pm_config = 0;
1033
1034 /* Interrupts already disabled by sc92031_stop or sc92031_probe */
1035 spin_lock_bh(&priv->lock);
1036
1037 _sc92031_reset(dev);
1038 mmiowb();
1039
1040 spin_unlock_bh(&priv->lock);
1041 sc92031_enable_interrupts(dev);
1042
1043 if (netif_carrier_ok(dev))
1044 netif_start_queue(dev);
1045 else
1046 netif_tx_disable(dev);
1047
1048 return 0;
1049
1050 out_request_irq:
1051 pci_free_consistent(pdev, TX_BUF_TOT_LEN, priv->tx_bufs,
1052 priv->tx_bufs_dma_addr);
1053 out_alloc_tx_bufs:
1054 pci_free_consistent(pdev, RX_BUF_LEN, priv->rx_ring,
1055 priv->rx_ring_dma_addr);
1056 out_alloc_rx_ring:
1057 return err;
1058 }
1059
1060 static int sc92031_stop(struct net_device *dev)
1061 {
1062 struct sc92031_priv *priv = netdev_priv(dev);
1063 struct pci_dev *pdev = priv->pdev;
1064
1065 netif_tx_disable(dev);
1066
1067 /* Disable interrupts, stop Tx and Rx. */
1068 sc92031_disable_interrupts(dev);
1069
1070 spin_lock_bh(&priv->lock);
1071
1072 _sc92031_disable_tx_rx(dev);
1073 _sc92031_tx_clear(dev);
1074 mmiowb();
1075
1076 spin_unlock_bh(&priv->lock);
1077
1078 free_irq(pdev->irq, dev);
1079 pci_free_consistent(pdev, TX_BUF_TOT_LEN, priv->tx_bufs,
1080 priv->tx_bufs_dma_addr);
1081 pci_free_consistent(pdev, RX_BUF_LEN, priv->rx_ring,
1082 priv->rx_ring_dma_addr);
1083
1084 return 0;
1085 }
1086
1087 static void sc92031_set_multicast_list(struct net_device *dev)
1088 {
1089 struct sc92031_priv *priv = netdev_priv(dev);
1090
1091 spin_lock_bh(&priv->lock);
1092
1093 _sc92031_set_mar(dev);
1094 _sc92031_set_rx_config(dev);
1095 mmiowb();
1096
1097 spin_unlock_bh(&priv->lock);
1098 }
1099
1100 static void sc92031_tx_timeout(struct net_device *dev)
1101 {
1102 struct sc92031_priv *priv = netdev_priv(dev);
1103
1104 /* Disable interrupts by clearing the interrupt mask.*/
1105 sc92031_disable_interrupts(dev);
1106
1107 spin_lock(&priv->lock);
1108
1109 priv->tx_timeouts++;
1110
1111 _sc92031_reset(dev);
1112 mmiowb();
1113
1114 spin_unlock(&priv->lock);
1115
1116 /* enable interrupts */
1117 sc92031_enable_interrupts(dev);
1118
1119 if (netif_carrier_ok(dev))
1120 netif_wake_queue(dev);
1121 }
1122
1123 #ifdef CONFIG_NET_POLL_CONTROLLER
1124 static void sc92031_poll_controller(struct net_device *dev)
1125 {
1126 disable_irq(dev->irq);
1127 if (sc92031_interrupt(dev->irq, dev) != IRQ_NONE)
1128 sc92031_tasklet((unsigned long)dev);
1129 enable_irq(dev->irq);
1130 }
1131 #endif
1132
1133 static int sc92031_ethtool_get_settings(struct net_device *dev,
1134 struct ethtool_cmd *cmd)
1135 {
1136 struct sc92031_priv *priv = netdev_priv(dev);
1137 void __iomem *port_base = priv->port_base;
1138 u8 phy_address;
1139 u32 phy_ctrl;
1140 u16 output_status;
1141
1142 spin_lock_bh(&priv->lock);
1143
1144 phy_address = ioread32(port_base + Miicmd1) >> 27;
1145 phy_ctrl = ioread32(port_base + PhyCtrl);
1146
1147 output_status = _sc92031_mii_read(port_base, MII_OutputStatus);
1148 _sc92031_mii_scan(port_base);
1149 mmiowb();
1150
1151 spin_unlock_bh(&priv->lock);
1152
1153 cmd->supported = SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full
1154 | SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full
1155 | SUPPORTED_Autoneg | SUPPORTED_TP | SUPPORTED_MII;
1156
1157 cmd->advertising = ADVERTISED_TP | ADVERTISED_MII;
1158
1159 if ((phy_ctrl & (PhyCtrlDux | PhyCtrlSpd100 | PhyCtrlSpd10))
1160 == (PhyCtrlDux | PhyCtrlSpd100 | PhyCtrlSpd10))
1161 cmd->advertising |= ADVERTISED_Autoneg;
1162
1163 if ((phy_ctrl & PhyCtrlSpd10) == PhyCtrlSpd10)
1164 cmd->advertising |= ADVERTISED_10baseT_Half;
1165
1166 if ((phy_ctrl & (PhyCtrlSpd10 | PhyCtrlDux))
1167 == (PhyCtrlSpd10 | PhyCtrlDux))
1168 cmd->advertising |= ADVERTISED_10baseT_Full;
1169
1170 if ((phy_ctrl & PhyCtrlSpd100) == PhyCtrlSpd100)
1171 cmd->advertising |= ADVERTISED_100baseT_Half;
1172
1173 if ((phy_ctrl & (PhyCtrlSpd100 | PhyCtrlDux))
1174 == (PhyCtrlSpd100 | PhyCtrlDux))
1175 cmd->advertising |= ADVERTISED_100baseT_Full;
1176
1177 if (phy_ctrl & PhyCtrlAne)
1178 cmd->advertising |= ADVERTISED_Autoneg;
1179
1180 cmd->speed = (output_status & 0x2) ? SPEED_100 : SPEED_10;
1181 cmd->duplex = (output_status & 0x4) ? DUPLEX_FULL : DUPLEX_HALF;
1182 cmd->port = PORT_MII;
1183 cmd->phy_address = phy_address;
1184 cmd->transceiver = XCVR_INTERNAL;
1185 cmd->autoneg = (phy_ctrl & PhyCtrlAne) ? AUTONEG_ENABLE : AUTONEG_DISABLE;
1186
1187 return 0;
1188 }
1189
1190 static int sc92031_ethtool_set_settings(struct net_device *dev,
1191 struct ethtool_cmd *cmd)
1192 {
1193 struct sc92031_priv *priv = netdev_priv(dev);
1194 void __iomem *port_base = priv->port_base;
1195 u32 phy_ctrl;
1196 u32 old_phy_ctrl;
1197
1198 if (!(cmd->speed == SPEED_10 || cmd->speed == SPEED_100))
1199 return -EINVAL;
1200 if (!(cmd->duplex == DUPLEX_HALF || cmd->duplex == DUPLEX_FULL))
1201 return -EINVAL;
1202 if (!(cmd->port == PORT_MII))
1203 return -EINVAL;
1204 if (!(cmd->phy_address == 0x1f))
1205 return -EINVAL;
1206 if (!(cmd->transceiver == XCVR_INTERNAL))
1207 return -EINVAL;
1208 if (!(cmd->autoneg == AUTONEG_DISABLE || cmd->autoneg == AUTONEG_ENABLE))
1209 return -EINVAL;
1210
1211 if (cmd->autoneg == AUTONEG_ENABLE) {
1212 if (!(cmd->advertising & (ADVERTISED_Autoneg
1213 | ADVERTISED_100baseT_Full
1214 | ADVERTISED_100baseT_Half
1215 | ADVERTISED_10baseT_Full
1216 | ADVERTISED_10baseT_Half)))
1217 return -EINVAL;
1218
1219 phy_ctrl = PhyCtrlAne;
1220
1221 // FIXME: I'm not sure what the original code was trying to do
1222 if (cmd->advertising & ADVERTISED_Autoneg)
1223 phy_ctrl |= PhyCtrlDux | PhyCtrlSpd100 | PhyCtrlSpd10;
1224 if (cmd->advertising & ADVERTISED_100baseT_Full)
1225 phy_ctrl |= PhyCtrlDux | PhyCtrlSpd100;
1226 if (cmd->advertising & ADVERTISED_100baseT_Half)
1227 phy_ctrl |= PhyCtrlSpd100;
1228 if (cmd->advertising & ADVERTISED_10baseT_Full)
1229 phy_ctrl |= PhyCtrlSpd10 | PhyCtrlDux;
1230 if (cmd->advertising & ADVERTISED_10baseT_Half)
1231 phy_ctrl |= PhyCtrlSpd10;
1232 } else {
1233 // FIXME: Whole branch guessed
1234 phy_ctrl = 0;
1235
1236 if (cmd->speed == SPEED_10)
1237 phy_ctrl |= PhyCtrlSpd10;
1238 else /* cmd->speed == SPEED_100 */
1239 phy_ctrl |= PhyCtrlSpd100;
1240
1241 if (cmd->duplex == DUPLEX_FULL)
1242 phy_ctrl |= PhyCtrlDux;
1243 }
1244
1245 spin_lock_bh(&priv->lock);
1246
1247 old_phy_ctrl = ioread32(port_base + PhyCtrl);
1248 phy_ctrl |= old_phy_ctrl & ~(PhyCtrlAne | PhyCtrlDux
1249 | PhyCtrlSpd100 | PhyCtrlSpd10);
1250 if (phy_ctrl != old_phy_ctrl)
1251 iowrite32(phy_ctrl, port_base + PhyCtrl);
1252
1253 spin_unlock_bh(&priv->lock);
1254
1255 return 0;
1256 }
1257
1258 static void sc92031_ethtool_get_drvinfo(struct net_device *dev,
1259 struct ethtool_drvinfo *drvinfo)
1260 {
1261 struct sc92031_priv *priv = netdev_priv(dev);
1262 struct pci_dev *pdev = priv->pdev;
1263
1264 strcpy(drvinfo->driver, SC92031_NAME);
1265 strcpy(drvinfo->bus_info, pci_name(pdev));
1266 }
1267
1268 static void sc92031_ethtool_get_wol(struct net_device *dev,
1269 struct ethtool_wolinfo *wolinfo)
1270 {
1271 struct sc92031_priv *priv = netdev_priv(dev);
1272 void __iomem *port_base = priv->port_base;
1273 u32 pm_config;
1274
1275 spin_lock_bh(&priv->lock);
1276 pm_config = ioread32(port_base + PMConfig);
1277 spin_unlock_bh(&priv->lock);
1278
1279 // FIXME: Guessed
1280 wolinfo->supported = WAKE_PHY | WAKE_MAGIC
1281 | WAKE_UCAST | WAKE_MCAST | WAKE_BCAST;
1282 wolinfo->wolopts = 0;
1283
1284 if (pm_config & PM_LinkUp)
1285 wolinfo->wolopts |= WAKE_PHY;
1286
1287 if (pm_config & PM_Magic)
1288 wolinfo->wolopts |= WAKE_MAGIC;
1289
1290 if (pm_config & PM_WakeUp)
1291 // FIXME: Guessed
1292 wolinfo->wolopts |= WAKE_UCAST | WAKE_MCAST | WAKE_BCAST;
1293 }
1294
1295 static int sc92031_ethtool_set_wol(struct net_device *dev,
1296 struct ethtool_wolinfo *wolinfo)
1297 {
1298 struct sc92031_priv *priv = netdev_priv(dev);
1299 void __iomem *port_base = priv->port_base;
1300 u32 pm_config;
1301
1302 spin_lock_bh(&priv->lock);
1303
1304 pm_config = ioread32(port_base + PMConfig)
1305 & ~(PM_LinkUp | PM_Magic | PM_WakeUp);
1306
1307 if (wolinfo->wolopts & WAKE_PHY)
1308 pm_config |= PM_LinkUp;
1309
1310 if (wolinfo->wolopts & WAKE_MAGIC)
1311 pm_config |= PM_Magic;
1312
1313 // FIXME: Guessed
1314 if (wolinfo->wolopts & (WAKE_UCAST | WAKE_MCAST | WAKE_BCAST))
1315 pm_config |= PM_WakeUp;
1316
1317 priv->pm_config = pm_config;
1318 iowrite32(pm_config, port_base + PMConfig);
1319 mmiowb();
1320
1321 spin_unlock_bh(&priv->lock);
1322
1323 return 0;
1324 }
1325
1326 static int sc92031_ethtool_nway_reset(struct net_device *dev)
1327 {
1328 int err = 0;
1329 struct sc92031_priv *priv = netdev_priv(dev);
1330 void __iomem *port_base = priv->port_base;
1331 u16 bmcr;
1332
1333 spin_lock_bh(&priv->lock);
1334
1335 bmcr = _sc92031_mii_read(port_base, MII_BMCR);
1336 if (!(bmcr & BMCR_ANENABLE)) {
1337 err = -EINVAL;
1338 goto out;
1339 }
1340
1341 _sc92031_mii_write(port_base, MII_BMCR, bmcr | BMCR_ANRESTART);
1342
1343 out:
1344 _sc92031_mii_scan(port_base);
1345 mmiowb();
1346
1347 spin_unlock_bh(&priv->lock);
1348
1349 return err;
1350 }
1351
1352 static const char sc92031_ethtool_stats_strings[SILAN_STATS_NUM][ETH_GSTRING_LEN] = {
1353 "tx_timeout",
1354 "rx_loss",
1355 };
1356
1357 static void sc92031_ethtool_get_strings(struct net_device *dev,
1358 u32 stringset, u8 *data)
1359 {
1360 if (stringset == ETH_SS_STATS)
1361 memcpy(data, sc92031_ethtool_stats_strings,
1362 SILAN_STATS_NUM * ETH_GSTRING_LEN);
1363 }
1364
1365 static int sc92031_ethtool_get_sset_count(struct net_device *dev, int sset)
1366 {
1367 switch (sset) {
1368 case ETH_SS_STATS:
1369 return SILAN_STATS_NUM;
1370 default:
1371 return -EOPNOTSUPP;
1372 }
1373 }
1374
1375 static void sc92031_ethtool_get_ethtool_stats(struct net_device *dev,
1376 struct ethtool_stats *stats, u64 *data)
1377 {
1378 struct sc92031_priv *priv = netdev_priv(dev);
1379
1380 spin_lock_bh(&priv->lock);
1381 data[0] = priv->tx_timeouts;
1382 data[1] = priv->rx_loss;
1383 spin_unlock_bh(&priv->lock);
1384 }
1385
1386 static const struct ethtool_ops sc92031_ethtool_ops = {
1387 .get_settings = sc92031_ethtool_get_settings,
1388 .set_settings = sc92031_ethtool_set_settings,
1389 .get_drvinfo = sc92031_ethtool_get_drvinfo,
1390 .get_wol = sc92031_ethtool_get_wol,
1391 .set_wol = sc92031_ethtool_set_wol,
1392 .nway_reset = sc92031_ethtool_nway_reset,
1393 .get_link = ethtool_op_get_link,
1394 .get_strings = sc92031_ethtool_get_strings,
1395 .get_sset_count = sc92031_ethtool_get_sset_count,
1396 .get_ethtool_stats = sc92031_ethtool_get_ethtool_stats,
1397 };
1398
1399
1400 static const struct net_device_ops sc92031_netdev_ops = {
1401 .ndo_get_stats = sc92031_get_stats,
1402 .ndo_start_xmit = sc92031_start_xmit,
1403 .ndo_open = sc92031_open,
1404 .ndo_stop = sc92031_stop,
1405 .ndo_set_multicast_list = sc92031_set_multicast_list,
1406 .ndo_change_mtu = eth_change_mtu,
1407 .ndo_validate_addr = eth_validate_addr,
1408 .ndo_set_mac_address = eth_mac_addr,
1409 .ndo_tx_timeout = sc92031_tx_timeout,
1410 #ifdef CONFIG_NET_POLL_CONTROLLER
1411 .ndo_poll_controller = sc92031_poll_controller,
1412 #endif
1413 };
1414
1415 static int __devinit sc92031_probe(struct pci_dev *pdev,
1416 const struct pci_device_id *id)
1417 {
1418 int err;
1419 void __iomem* port_base;
1420 struct net_device *dev;
1421 struct sc92031_priv *priv;
1422 u32 mac0, mac1;
1423 unsigned long base_addr;
1424
1425 err = pci_enable_device(pdev);
1426 if (unlikely(err < 0))
1427 goto out_enable_device;
1428
1429 pci_set_master(pdev);
1430
1431 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
1432 if (unlikely(err < 0))
1433 goto out_set_dma_mask;
1434
1435 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
1436 if (unlikely(err < 0))
1437 goto out_set_dma_mask;
1438
1439 err = pci_request_regions(pdev, SC92031_NAME);
1440 if (unlikely(err < 0))
1441 goto out_request_regions;
1442
1443 port_base = pci_iomap(pdev, SC92031_USE_BAR, 0);
1444 if (unlikely(!port_base)) {
1445 err = -EIO;
1446 goto out_iomap;
1447 }
1448
1449 dev = alloc_etherdev(sizeof(struct sc92031_priv));
1450 if (unlikely(!dev)) {
1451 err = -ENOMEM;
1452 goto out_alloc_etherdev;
1453 }
1454
1455 pci_set_drvdata(pdev, dev);
1456 SET_NETDEV_DEV(dev, &pdev->dev);
1457
1458 #if SC92031_USE_BAR == 0
1459 dev->mem_start = pci_resource_start(pdev, SC92031_USE_BAR);
1460 dev->mem_end = pci_resource_end(pdev, SC92031_USE_BAR);
1461 #elif SC92031_USE_BAR == 1
1462 dev->base_addr = pci_resource_start(pdev, SC92031_USE_BAR);
1463 #endif
1464 dev->irq = pdev->irq;
1465
1466 /* faked with skb_copy_and_csum_dev */
1467 dev->features = NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_HIGHDMA;
1468
1469 dev->netdev_ops = &sc92031_netdev_ops;
1470 dev->watchdog_timeo = TX_TIMEOUT;
1471 dev->ethtool_ops = &sc92031_ethtool_ops;
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 #if SC92031_USE_BAR == 0
1499 base_addr = dev->mem_start;
1500 #elif SC92031_USE_BAR == 1
1501 base_addr = dev->base_addr;
1502 #endif
1503 printk(KERN_INFO "%s: SC92031 at 0x%lx, %pM, IRQ %d\n", dev->name,
1504 base_addr, dev->dev_addr, dev->irq);
1505
1506 return 0;
1507
1508 out_register_netdev:
1509 free_netdev(dev);
1510 out_alloc_etherdev:
1511 pci_iounmap(pdev, port_base);
1512 out_iomap:
1513 pci_release_regions(pdev);
1514 out_request_regions:
1515 out_set_dma_mask:
1516 pci_disable_device(pdev);
1517 out_enable_device:
1518 return err;
1519 }
1520
1521 static void __devexit sc92031_remove(struct pci_dev *pdev)
1522 {
1523 struct net_device *dev = pci_get_drvdata(pdev);
1524 struct sc92031_priv *priv = netdev_priv(dev);
1525 void __iomem* port_base = priv->port_base;
1526
1527 unregister_netdev(dev);
1528 free_netdev(dev);
1529 pci_iounmap(pdev, port_base);
1530 pci_release_regions(pdev);
1531 pci_disable_device(pdev);
1532 }
1533
1534 static int sc92031_suspend(struct pci_dev *pdev, pm_message_t state)
1535 {
1536 struct net_device *dev = pci_get_drvdata(pdev);
1537 struct sc92031_priv *priv = netdev_priv(dev);
1538
1539 pci_save_state(pdev);
1540
1541 if (!netif_running(dev))
1542 goto out;
1543
1544 netif_device_detach(dev);
1545
1546 /* Disable interrupts, stop Tx and Rx. */
1547 sc92031_disable_interrupts(dev);
1548
1549 spin_lock_bh(&priv->lock);
1550
1551 _sc92031_disable_tx_rx(dev);
1552 _sc92031_tx_clear(dev);
1553 mmiowb();
1554
1555 spin_unlock_bh(&priv->lock);
1556
1557 out:
1558 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1559
1560 return 0;
1561 }
1562
1563 static int sc92031_resume(struct pci_dev *pdev)
1564 {
1565 struct net_device *dev = pci_get_drvdata(pdev);
1566 struct sc92031_priv *priv = netdev_priv(dev);
1567
1568 pci_restore_state(pdev);
1569 pci_set_power_state(pdev, PCI_D0);
1570
1571 if (!netif_running(dev))
1572 goto out;
1573
1574 /* Interrupts already disabled by sc92031_suspend */
1575 spin_lock_bh(&priv->lock);
1576
1577 _sc92031_reset(dev);
1578 mmiowb();
1579
1580 spin_unlock_bh(&priv->lock);
1581 sc92031_enable_interrupts(dev);
1582
1583 netif_device_attach(dev);
1584
1585 if (netif_carrier_ok(dev))
1586 netif_wake_queue(dev);
1587 else
1588 netif_tx_disable(dev);
1589
1590 out:
1591 return 0;
1592 }
1593
1594 static struct pci_device_id sc92031_pci_device_id_table[] __devinitdata = {
1595 { PCI_DEVICE(PCI_VENDOR_ID_SILAN, 0x2031) },
1596 { PCI_DEVICE(PCI_VENDOR_ID_SILAN, 0x8139) },
1597 { PCI_DEVICE(0x1088, 0x2031) },
1598 { 0, }
1599 };
1600 MODULE_DEVICE_TABLE(pci, sc92031_pci_device_id_table);
1601
1602 static struct pci_driver sc92031_pci_driver = {
1603 .name = SC92031_NAME,
1604 .id_table = sc92031_pci_device_id_table,
1605 .probe = sc92031_probe,
1606 .remove = __devexit_p(sc92031_remove),
1607 .suspend = sc92031_suspend,
1608 .resume = sc92031_resume,
1609 };
1610
1611 static int __init sc92031_init(void)
1612 {
1613 return pci_register_driver(&sc92031_pci_driver);
1614 }
1615
1616 static void __exit sc92031_exit(void)
1617 {
1618 pci_unregister_driver(&sc92031_pci_driver);
1619 }
1620
1621 module_init(sc92031_init);
1622 module_exit(sc92031_exit);
1623
1624 MODULE_LICENSE("GPL");
1625 MODULE_AUTHOR("Cesar Eduardo Barros <cesarb@cesarb.net>");
1626 MODULE_DESCRIPTION("Silan SC92031 PCI Fast Ethernet Adapter driver");
Linux for Ginger Game Console