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[PATCH] remove obsolete sis900 documentation
[linux-2.6/libata-dev.git] / drivers / net / sis190.c
blob31dd3f036fa84cc0f3298efd5f8c9e0fb96897df
1 /*
2 sis190.c: Silicon Integrated Systems SiS190 ethernet driver
3
4 Copyright (c) 2003 K.M. Liu <kmliu@sis.com>
5 Copyright (c) 2003, 2004 Jeff Garzik <jgarzik@pobox.com>
6 Copyright (c) 2003, 2004, 2005 Francois Romieu <romieu@fr.zoreil.com>
7
8 Based on r8169.c, tg3.c, 8139cp.c, skge.c, epic100.c and SiS 190/191
9 genuine driver.
10
11 This software may be used and distributed according to the terms of
12 the GNU General Public License (GPL), incorporated herein by reference.
13 Drivers based on or derived from this code fall under the GPL and must
14 retain the authorship, copyright and license notice. This file is not
15 a complete program and may only be used when the entire operating
16 system is licensed under the GPL.
17
18 See the file COPYING in this distribution for more information.
19
20 */
21
22 #include <linux/module.h>
23 #include <linux/moduleparam.h>
24 #include <linux/netdevice.h>
25 #include <linux/rtnetlink.h>
26 #include <linux/etherdevice.h>
27 #include <linux/ethtool.h>
28 #include <linux/pci.h>
29 #include <linux/mii.h>
30 #include <linux/delay.h>
31 #include <linux/crc32.h>
32 #include <linux/dma-mapping.h>
33 #include <asm/irq.h>
34
35 #define net_drv(p, arg...) if (netif_msg_drv(p)) \
36 printk(arg)
37 #define net_probe(p, arg...) if (netif_msg_probe(p)) \
38 printk(arg)
39 #define net_link(p, arg...) if (netif_msg_link(p)) \
40 printk(arg)
41 #define net_intr(p, arg...) if (netif_msg_intr(p)) \
42 printk(arg)
43 #define net_tx_err(p, arg...) if (netif_msg_tx_err(p)) \
44 printk(arg)
45
46 #define PHY_MAX_ADDR 32
47 #define PHY_ID_ANY 0x1f
48 #define MII_REG_ANY 0x1f
49
50 #ifdef CONFIG_SIS190_NAPI
51 #define NAPI_SUFFIX "-NAPI"
52 #else
53 #define NAPI_SUFFIX ""
54 #endif
55
56 #define DRV_VERSION "1.2" NAPI_SUFFIX
57 #define DRV_NAME "sis190"
58 #define SIS190_DRIVER_NAME DRV_NAME " Gigabit Ethernet driver " DRV_VERSION
59 #define PFX DRV_NAME ": "
60
61 #ifdef CONFIG_SIS190_NAPI
62 #define sis190_rx_skb netif_receive_skb
63 #define sis190_rx_quota(count, quota) min(count, quota)
64 #else
65 #define sis190_rx_skb netif_rx
66 #define sis190_rx_quota(count, quota) count
67 #endif
68
69 #define MAC_ADDR_LEN 6
70
71 #define NUM_TX_DESC 64 /* [8..1024] */
72 #define NUM_RX_DESC 64 /* [8..8192] */
73 #define TX_RING_BYTES (NUM_TX_DESC * sizeof(struct TxDesc))
74 #define RX_RING_BYTES (NUM_RX_DESC * sizeof(struct RxDesc))
75 #define RX_BUF_SIZE 1536
76 #define RX_BUF_MASK 0xfff8
77
78 #define SIS190_REGS_SIZE 0x80
79 #define SIS190_TX_TIMEOUT (6*HZ)
80 #define SIS190_PHY_TIMEOUT (10*HZ)
81 #define SIS190_MSG_DEFAULT (NETIF_MSG_DRV | NETIF_MSG_PROBE | \
82 NETIF_MSG_LINK | NETIF_MSG_IFUP | \
83 NETIF_MSG_IFDOWN)
84
85 /* Enhanced PHY access register bit definitions */
86 #define EhnMIIread 0x0000
87 #define EhnMIIwrite 0x0020
88 #define EhnMIIdataShift 16
89 #define EhnMIIpmdShift 6 /* 7016 only */
90 #define EhnMIIregShift 11
91 #define EhnMIIreq 0x0010
92 #define EhnMIInotDone 0x0010
93
94 /* Write/read MMIO register */
95 #define SIS_W8(reg, val) writeb ((val), ioaddr + (reg))
96 #define SIS_W16(reg, val) writew ((val), ioaddr + (reg))
97 #define SIS_W32(reg, val) writel ((val), ioaddr + (reg))
98 #define SIS_R8(reg) readb (ioaddr + (reg))
99 #define SIS_R16(reg) readw (ioaddr + (reg))
100 #define SIS_R32(reg) readl (ioaddr + (reg))
101
102 #define SIS_PCI_COMMIT() SIS_R32(IntrControl)
103
104 enum sis190_registers {
105 TxControl = 0x00,
106 TxDescStartAddr = 0x04,
107 rsv0 = 0x08, // reserved
108 TxSts = 0x0c, // unused (Control/Status)
109 RxControl = 0x10,
110 RxDescStartAddr = 0x14,
111 rsv1 = 0x18, // reserved
112 RxSts = 0x1c, // unused
113 IntrStatus = 0x20,
114 IntrMask = 0x24,
115 IntrControl = 0x28,
116 IntrTimer = 0x2c, // unused (Interupt Timer)
117 PMControl = 0x30, // unused (Power Mgmt Control/Status)
118 rsv2 = 0x34, // reserved
119 ROMControl = 0x38,
120 ROMInterface = 0x3c,
121 StationControl = 0x40,
122 GMIIControl = 0x44,
123 GIoCR = 0x48, // unused (GMAC IO Compensation)
124 GIoCtrl = 0x4c, // unused (GMAC IO Control)
125 TxMacControl = 0x50,
126 TxLimit = 0x54, // unused (Tx MAC Timer/TryLimit)
127 RGDelay = 0x58, // unused (RGMII Tx Internal Delay)
128 rsv3 = 0x5c, // reserved
129 RxMacControl = 0x60,
130 RxMacAddr = 0x62,
131 RxHashTable = 0x68,
132 // Undocumented = 0x6c,
133 RxWolCtrl = 0x70,
134 RxWolData = 0x74, // unused (Rx WOL Data Access)
135 RxMPSControl = 0x78, // unused (Rx MPS Control)
136 rsv4 = 0x7c, // reserved
137 };
138
139 enum sis190_register_content {
140 /* IntrStatus */
141 SoftInt = 0x40000000, // unused
142 Timeup = 0x20000000, // unused
143 PauseFrame = 0x00080000, // unused
144 MagicPacket = 0x00040000, // unused
145 WakeupFrame = 0x00020000, // unused
146 LinkChange = 0x00010000,
147 RxQEmpty = 0x00000080,
148 RxQInt = 0x00000040,
149 TxQ1Empty = 0x00000020, // unused
150 TxQ1Int = 0x00000010,
151 TxQ0Empty = 0x00000008, // unused
152 TxQ0Int = 0x00000004,
153 RxHalt = 0x00000002,
154 TxHalt = 0x00000001,
155
156 /* {Rx/Tx}CmdBits */
157 CmdReset = 0x10,
158 CmdRxEnb = 0x08, // unused
159 CmdTxEnb = 0x01,
160 RxBufEmpty = 0x01, // unused
161
162 /* Cfg9346Bits */
163 Cfg9346_Lock = 0x00, // unused
164 Cfg9346_Unlock = 0xc0, // unused
165
166 /* RxMacControl */
167 AcceptErr = 0x20, // unused
168 AcceptRunt = 0x10, // unused
169 AcceptBroadcast = 0x0800,
170 AcceptMulticast = 0x0400,
171 AcceptMyPhys = 0x0200,
172 AcceptAllPhys = 0x0100,
173
174 /* RxConfigBits */
175 RxCfgFIFOShift = 13,
176 RxCfgDMAShift = 8, // 0x1a in RxControl ?
177
178 /* TxConfigBits */
179 TxInterFrameGapShift = 24,
180 TxDMAShift = 8, /* DMA burst value (0-7) is shift this many bits */
181
182 LinkStatus = 0x02, // unused
183 FullDup = 0x01, // unused
184
185 /* TBICSRBit */
186 TBILinkOK = 0x02000000, // unused
187 };
188
189 struct TxDesc {
190 __le32 PSize;
191 __le32 status;
192 __le32 addr;
193 __le32 size;
194 };
195
196 struct RxDesc {
197 __le32 PSize;
198 __le32 status;
199 __le32 addr;
200 __le32 size;
201 };
202
203 enum _DescStatusBit {
204 /* _Desc.status */
205 OWNbit = 0x80000000, // RXOWN/TXOWN
206 INTbit = 0x40000000, // RXINT/TXINT
207 CRCbit = 0x00020000, // CRCOFF/CRCEN
208 PADbit = 0x00010000, // PREADD/PADEN
209 /* _Desc.size */
210 RingEnd = 0x80000000,
211 /* TxDesc.status */
212 LSEN = 0x08000000, // TSO ? -- FR
213 IPCS = 0x04000000,
214 TCPCS = 0x02000000,
215 UDPCS = 0x01000000,
216 BSTEN = 0x00800000,
217 EXTEN = 0x00400000,
218 DEFEN = 0x00200000,
219 BKFEN = 0x00100000,
220 CRSEN = 0x00080000,
221 COLEN = 0x00040000,
222 THOL3 = 0x30000000,
223 THOL2 = 0x20000000,
224 THOL1 = 0x10000000,
225 THOL0 = 0x00000000,
226 /* RxDesc.status */
227 IPON = 0x20000000,
228 TCPON = 0x10000000,
229 UDPON = 0x08000000,
230 Wakup = 0x00400000,
231 Magic = 0x00200000,
232 Pause = 0x00100000,
233 DEFbit = 0x00200000,
234 BCAST = 0x000c0000,
235 MCAST = 0x00080000,
236 UCAST = 0x00040000,
237 /* RxDesc.PSize */
238 TAGON = 0x80000000,
239 RxDescCountMask = 0x7f000000, // multi-desc pkt when > 1 ? -- FR
240 ABORT = 0x00800000,
241 SHORT = 0x00400000,
242 LIMIT = 0x00200000,
243 MIIER = 0x00100000,
244 OVRUN = 0x00080000,
245 NIBON = 0x00040000,
246 COLON = 0x00020000,
247 CRCOK = 0x00010000,
248 RxSizeMask = 0x0000ffff
249 /*
250 * The asic could apparently do vlan, TSO, jumbo (sis191 only) and
251 * provide two (unused with Linux) Tx queues. No publically
252 * available documentation alas.
253 */
254 };
255
256 enum sis190_eeprom_access_register_bits {
257 EECS = 0x00000001, // unused
258 EECLK = 0x00000002, // unused
259 EEDO = 0x00000008, // unused
260 EEDI = 0x00000004, // unused
261 EEREQ = 0x00000080,
262 EEROP = 0x00000200,
263 EEWOP = 0x00000100 // unused
264 };
265
266 /* EEPROM Addresses */
267 enum sis190_eeprom_address {
268 EEPROMSignature = 0x00,
269 EEPROMCLK = 0x01, // unused
270 EEPROMInfo = 0x02,
271 EEPROMMACAddr = 0x03
272 };
273
274 enum sis190_feature {
275 F_HAS_RGMII = 1,
276 F_PHY_88E1111 = 2,
277 F_PHY_BCM5461 = 4
278 };
279
280 struct sis190_private {
281 void __iomem *mmio_addr;
282 struct pci_dev *pci_dev;
283 struct net_device_stats stats;
284 spinlock_t lock;
285 u32 rx_buf_sz;
286 u32 cur_rx;
287 u32 cur_tx;
288 u32 dirty_rx;
289 u32 dirty_tx;
290 dma_addr_t rx_dma;
291 dma_addr_t tx_dma;
292 struct RxDesc *RxDescRing;
293 struct TxDesc *TxDescRing;
294 struct sk_buff *Rx_skbuff[NUM_RX_DESC];
295 struct sk_buff *Tx_skbuff[NUM_TX_DESC];
296 struct work_struct phy_task;
297 struct timer_list timer;
298 u32 msg_enable;
299 struct mii_if_info mii_if;
300 struct list_head first_phy;
301 u32 features;
302 };
303
304 struct sis190_phy {
305 struct list_head list;
306 int phy_id;
307 u16 id[2];
308 u16 status;
309 u8 type;
310 };
311
312 enum sis190_phy_type {
313 UNKNOWN = 0x00,
314 HOME = 0x01,
315 LAN = 0x02,
316 MIX = 0x03
317 };
318
319 static struct mii_chip_info {
320 const char *name;
321 u16 id[2];
322 unsigned int type;
323 u32 feature;
324 } mii_chip_table[] = {
325 { "Broadcom PHY BCM5461", { 0x0020, 0x60c0 }, LAN, F_PHY_BCM5461 },
326 { "Agere PHY ET1101B", { 0x0282, 0xf010 }, LAN, 0 },
327 { "Marvell PHY 88E1111", { 0x0141, 0x0cc0 }, LAN, F_PHY_88E1111 },
328 { "Realtek PHY RTL8201", { 0x0000, 0x8200 }, LAN, 0 },
329 { NULL, }
330 };
331
332 static const struct {
333 const char *name;
334 } sis_chip_info[] = {
335 { "SiS 190 PCI Fast Ethernet adapter" },
336 { "SiS 191 PCI Gigabit Ethernet adapter" },
337 };
338
339 static struct pci_device_id sis190_pci_tbl[] __devinitdata = {
340 { PCI_DEVICE(PCI_VENDOR_ID_SI, 0x0190), 0, 0, 0 },
341 { PCI_DEVICE(PCI_VENDOR_ID_SI, 0x0191), 0, 0, 1 },
342 { 0, },
343 };
344
345 MODULE_DEVICE_TABLE(pci, sis190_pci_tbl);
346
347 static int rx_copybreak = 200;
348
349 static struct {
350 u32 msg_enable;
351 } debug = { -1 };
352
353 MODULE_DESCRIPTION("SiS sis190 Gigabit Ethernet driver");
354 module_param(rx_copybreak, int, 0);
355 MODULE_PARM_DESC(rx_copybreak, "Copy breakpoint for copy-only-tiny-frames");
356 module_param_named(debug, debug.msg_enable, int, 0);
357 MODULE_PARM_DESC(debug, "Debug verbosity level (0=none, ..., 16=all)");
358 MODULE_AUTHOR("K.M. Liu <kmliu@sis.com>, Ueimor <romieu@fr.zoreil.com>");
359 MODULE_VERSION(DRV_VERSION);
360 MODULE_LICENSE("GPL");
361
362 static const u32 sis190_intr_mask =
363 RxQEmpty | RxQInt | TxQ1Int | TxQ0Int | RxHalt | TxHalt | LinkChange;
364
365 /*
366 * Maximum number of multicast addresses to filter (vs. Rx-all-multicast).
367 * The chips use a 64 element hash table based on the Ethernet CRC.
368 */
369 static const int multicast_filter_limit = 32;
370
371 static void __mdio_cmd(void __iomem *ioaddr, u32 ctl)
372 {
373 unsigned int i;
374
375 SIS_W32(GMIIControl, ctl);
376
377 msleep(1);
378
379 for (i = 0; i < 100; i++) {
380 if (!(SIS_R32(GMIIControl) & EhnMIInotDone))
381 break;
382 msleep(1);
383 }
384
385 if (i > 999)
386 printk(KERN_ERR PFX "PHY command failed !\n");
387 }
388
389 static void mdio_write(void __iomem *ioaddr, int phy_id, int reg, int val)
390 {
391 __mdio_cmd(ioaddr, EhnMIIreq | EhnMIIwrite |
392 (((u32) reg) << EhnMIIregShift) | (phy_id << EhnMIIpmdShift) |
393 (((u32) val) << EhnMIIdataShift));
394 }
395
396 static int mdio_read(void __iomem *ioaddr, int phy_id, int reg)
397 {
398 __mdio_cmd(ioaddr, EhnMIIreq | EhnMIIread |
399 (((u32) reg) << EhnMIIregShift) | (phy_id << EhnMIIpmdShift));
400
401 return (u16) (SIS_R32(GMIIControl) >> EhnMIIdataShift);
402 }
403
404 static void __mdio_write(struct net_device *dev, int phy_id, int reg, int val)
405 {
406 struct sis190_private *tp = netdev_priv(dev);
407
408 mdio_write(tp->mmio_addr, phy_id, reg, val);
409 }
410
411 static int __mdio_read(struct net_device *dev, int phy_id, int reg)
412 {
413 struct sis190_private *tp = netdev_priv(dev);
414
415 return mdio_read(tp->mmio_addr, phy_id, reg);
416 }
417
418 static u16 mdio_read_latched(void __iomem *ioaddr, int phy_id, int reg)
419 {
420 mdio_read(ioaddr, phy_id, reg);
421 return mdio_read(ioaddr, phy_id, reg);
422 }
423
424 static u16 __devinit sis190_read_eeprom(void __iomem *ioaddr, u32 reg)
425 {
426 u16 data = 0xffff;
427 unsigned int i;
428
429 if (!(SIS_R32(ROMControl) & 0x0002))
430 return 0;
431
432 SIS_W32(ROMInterface, EEREQ | EEROP | (reg << 10));
433
434 for (i = 0; i < 200; i++) {
435 if (!(SIS_R32(ROMInterface) & EEREQ)) {
436 data = (SIS_R32(ROMInterface) & 0xffff0000) >> 16;
437 break;
438 }
439 msleep(1);
440 }
441
442 return data;
443 }
444
445 static void sis190_irq_mask_and_ack(void __iomem *ioaddr)
446 {
447 SIS_W32(IntrMask, 0x00);
448 SIS_W32(IntrStatus, 0xffffffff);
449 SIS_PCI_COMMIT();
450 }
451
452 static void sis190_asic_down(void __iomem *ioaddr)
453 {
454 /* Stop the chip's Tx and Rx DMA processes. */
455
456 SIS_W32(TxControl, 0x1a00);
457 SIS_W32(RxControl, 0x1a00);
458
459 sis190_irq_mask_and_ack(ioaddr);
460 }
461
462 static void sis190_mark_as_last_descriptor(struct RxDesc *desc)
463 {
464 desc->size |= cpu_to_le32(RingEnd);
465 }
466
467 static inline void sis190_give_to_asic(struct RxDesc *desc, u32 rx_buf_sz)
468 {
469 u32 eor = le32_to_cpu(desc->size) & RingEnd;
470
471 desc->PSize = 0x0;
472 desc->size = cpu_to_le32((rx_buf_sz & RX_BUF_MASK) | eor);
473 wmb();
474 desc->status = cpu_to_le32(OWNbit | INTbit);
475 }
476
477 static inline void sis190_map_to_asic(struct RxDesc *desc, dma_addr_t mapping,
478 u32 rx_buf_sz)
479 {
480 desc->addr = cpu_to_le32(mapping);
481 sis190_give_to_asic(desc, rx_buf_sz);
482 }
483
484 static inline void sis190_make_unusable_by_asic(struct RxDesc *desc)
485 {
486 desc->PSize = 0x0;
487 desc->addr = 0xdeadbeef;
488 desc->size &= cpu_to_le32(RingEnd);
489 wmb();
490 desc->status = 0x0;
491 }
492
493 static int sis190_alloc_rx_skb(struct pci_dev *pdev, struct sk_buff **sk_buff,
494 struct RxDesc *desc, u32 rx_buf_sz)
495 {
496 struct sk_buff *skb;
497 dma_addr_t mapping;
498 int ret = 0;
499
500 skb = dev_alloc_skb(rx_buf_sz);
501 if (!skb)
502 goto err_out;
503
504 *sk_buff = skb;
505
506 mapping = pci_map_single(pdev, skb->data, rx_buf_sz,
507 PCI_DMA_FROMDEVICE);
508
509 sis190_map_to_asic(desc, mapping, rx_buf_sz);
510 out:
511 return ret;
512
513 err_out:
514 ret = -ENOMEM;
515 sis190_make_unusable_by_asic(desc);
516 goto out;
517 }
518
519 static u32 sis190_rx_fill(struct sis190_private *tp, struct net_device *dev,
520 u32 start, u32 end)
521 {
522 u32 cur;
523
524 for (cur = start; cur < end; cur++) {
525 int ret, i = cur % NUM_RX_DESC;
526
527 if (tp->Rx_skbuff[i])
528 continue;
529
530 ret = sis190_alloc_rx_skb(tp->pci_dev, tp->Rx_skbuff + i,
531 tp->RxDescRing + i, tp->rx_buf_sz);
532 if (ret < 0)
533 break;
534 }
535 return cur - start;
536 }
537
538 static inline int sis190_try_rx_copy(struct sk_buff **sk_buff, int pkt_size,
539 struct RxDesc *desc, int rx_buf_sz)
540 {
541 int ret = -1;
542
543 if (pkt_size < rx_copybreak) {
544 struct sk_buff *skb;
545
546 skb = dev_alloc_skb(pkt_size + NET_IP_ALIGN);
547 if (skb) {
548 skb_reserve(skb, NET_IP_ALIGN);
549 eth_copy_and_sum(skb, sk_buff[0]->data, pkt_size, 0);
550 *sk_buff = skb;
551 sis190_give_to_asic(desc, rx_buf_sz);
552 ret = 0;
553 }
554 }
555 return ret;
556 }
557
558 static inline int sis190_rx_pkt_err(u32 status, struct net_device_stats *stats)
559 {
560 #define ErrMask (OVRUN | SHORT | LIMIT | MIIER | NIBON | COLON | ABORT)
561
562 if ((status & CRCOK) && !(status & ErrMask))
563 return 0;
564
565 if (!(status & CRCOK))
566 stats->rx_crc_errors++;
567 else if (status & OVRUN)
568 stats->rx_over_errors++;
569 else if (status & (SHORT | LIMIT))
570 stats->rx_length_errors++;
571 else if (status & (MIIER | NIBON | COLON))
572 stats->rx_frame_errors++;
573
574 stats->rx_errors++;
575 return -1;
576 }
577
578 static int sis190_rx_interrupt(struct net_device *dev,
579 struct sis190_private *tp, void __iomem *ioaddr)
580 {
581 struct net_device_stats *stats = &tp->stats;
582 u32 rx_left, cur_rx = tp->cur_rx;
583 u32 delta, count;
584
585 rx_left = NUM_RX_DESC + tp->dirty_rx - cur_rx;
586 rx_left = sis190_rx_quota(rx_left, (u32) dev->quota);
587
588 for (; rx_left > 0; rx_left--, cur_rx++) {
589 unsigned int entry = cur_rx % NUM_RX_DESC;
590 struct RxDesc *desc = tp->RxDescRing + entry;
591 u32 status;
592
593 if (desc->status & OWNbit)
594 break;
595
596 status = le32_to_cpu(desc->PSize);
597
598 // net_intr(tp, KERN_INFO "%s: Rx PSize = %08x.\n", dev->name,
599 // status);
600
601 if (sis190_rx_pkt_err(status, stats) < 0)
602 sis190_give_to_asic(desc, tp->rx_buf_sz);
603 else {
604 struct sk_buff *skb = tp->Rx_skbuff[entry];
605 int pkt_size = (status & RxSizeMask) - 4;
606 void (*pci_action)(struct pci_dev *, dma_addr_t,
607 size_t, int) = pci_dma_sync_single_for_device;
608
609 if (unlikely(pkt_size > tp->rx_buf_sz)) {
610 net_intr(tp, KERN_INFO
611 "%s: (frag) status = %08x.\n",
612 dev->name, status);
613 stats->rx_dropped++;
614 stats->rx_length_errors++;
615 sis190_give_to_asic(desc, tp->rx_buf_sz);
616 continue;
617 }
618
619 pci_dma_sync_single_for_cpu(tp->pci_dev,
620 le32_to_cpu(desc->addr), tp->rx_buf_sz,
621 PCI_DMA_FROMDEVICE);
622
623 if (sis190_try_rx_copy(&skb, pkt_size, desc,
624 tp->rx_buf_sz)) {
625 pci_action = pci_unmap_single;
626 tp->Rx_skbuff[entry] = NULL;
627 sis190_make_unusable_by_asic(desc);
628 }
629
630 pci_action(tp->pci_dev, le32_to_cpu(desc->addr),
631 tp->rx_buf_sz, PCI_DMA_FROMDEVICE);
632
633 skb->dev = dev;
634 skb_put(skb, pkt_size);
635 skb->protocol = eth_type_trans(skb, dev);
636
637 sis190_rx_skb(skb);
638
639 dev->last_rx = jiffies;
640 stats->rx_packets++;
641 stats->rx_bytes += pkt_size;
642 if ((status & BCAST) == MCAST)
643 stats->multicast++;
644 }
645 }
646 count = cur_rx - tp->cur_rx;
647 tp->cur_rx = cur_rx;
648
649 delta = sis190_rx_fill(tp, dev, tp->dirty_rx, tp->cur_rx);
650 if (!delta && count && netif_msg_intr(tp))
651 printk(KERN_INFO "%s: no Rx buffer allocated.\n", dev->name);
652 tp->dirty_rx += delta;
653
654 if (((tp->dirty_rx + NUM_RX_DESC) == tp->cur_rx) && netif_msg_intr(tp))
655 printk(KERN_EMERG "%s: Rx buffers exhausted.\n", dev->name);
656
657 return count;
658 }
659
660 static void sis190_unmap_tx_skb(struct pci_dev *pdev, struct sk_buff *skb,
661 struct TxDesc *desc)
662 {
663 unsigned int len;
664
665 len = skb->len < ETH_ZLEN ? ETH_ZLEN : skb->len;
666
667 pci_unmap_single(pdev, le32_to_cpu(desc->addr), len, PCI_DMA_TODEVICE);
668
669 memset(desc, 0x00, sizeof(*desc));
670 }
671
672 static void sis190_tx_interrupt(struct net_device *dev,
673 struct sis190_private *tp, void __iomem *ioaddr)
674 {
675 u32 pending, dirty_tx = tp->dirty_tx;
676 /*
677 * It would not be needed if queueing was allowed to be enabled
678 * again too early (hint: think preempt and unclocked smp systems).
679 */
680 unsigned int queue_stopped;
681
682 smp_rmb();
683 pending = tp->cur_tx - dirty_tx;
684 queue_stopped = (pending == NUM_TX_DESC);
685
686 for (; pending; pending--, dirty_tx++) {
687 unsigned int entry = dirty_tx % NUM_TX_DESC;
688 struct TxDesc *txd = tp->TxDescRing + entry;
689 struct sk_buff *skb;
690
691 if (le32_to_cpu(txd->status) & OWNbit)
692 break;
693
694 skb = tp->Tx_skbuff[entry];
695
696 tp->stats.tx_packets++;
697 tp->stats.tx_bytes += skb->len;
698
699 sis190_unmap_tx_skb(tp->pci_dev, skb, txd);
700 tp->Tx_skbuff[entry] = NULL;
701 dev_kfree_skb_irq(skb);
702 }
703
704 if (tp->dirty_tx != dirty_tx) {
705 tp->dirty_tx = dirty_tx;
706 smp_wmb();
707 if (queue_stopped)
708 netif_wake_queue(dev);
709 }
710 }
711
712 /*
713 * The interrupt handler does all of the Rx thread work and cleans up after
714 * the Tx thread.
715 */
716 static irqreturn_t sis190_interrupt(int irq, void *__dev, struct pt_regs *regs)
717 {
718 struct net_device *dev = __dev;
719 struct sis190_private *tp = netdev_priv(dev);
720 void __iomem *ioaddr = tp->mmio_addr;
721 unsigned int handled = 0;
722 u32 status;
723
724 status = SIS_R32(IntrStatus);
725
726 if ((status == 0xffffffff) || !status)
727 goto out;
728
729 handled = 1;
730
731 if (unlikely(!netif_running(dev))) {
732 sis190_asic_down(ioaddr);
733 goto out;
734 }
735
736 SIS_W32(IntrStatus, status);
737
738 // net_intr(tp, KERN_INFO "%s: status = %08x.\n", dev->name, status);
739
740 if (status & LinkChange) {
741 net_intr(tp, KERN_INFO "%s: link change.\n", dev->name);
742 schedule_work(&tp->phy_task);
743 }
744
745 if (status & RxQInt)
746 sis190_rx_interrupt(dev, tp, ioaddr);
747
748 if (status & TxQ0Int)
749 sis190_tx_interrupt(dev, tp, ioaddr);
750 out:
751 return IRQ_RETVAL(handled);
752 }
753
754 #ifdef CONFIG_NET_POLL_CONTROLLER
755 static void sis190_netpoll(struct net_device *dev)
756 {
757 struct sis190_private *tp = netdev_priv(dev);
758 struct pci_dev *pdev = tp->pci_dev;
759
760 disable_irq(pdev->irq);
761 sis190_interrupt(pdev->irq, dev, NULL);
762 enable_irq(pdev->irq);
763 }
764 #endif
765
766 static void sis190_free_rx_skb(struct sis190_private *tp,
767 struct sk_buff **sk_buff, struct RxDesc *desc)
768 {
769 struct pci_dev *pdev = tp->pci_dev;
770
771 pci_unmap_single(pdev, le32_to_cpu(desc->addr), tp->rx_buf_sz,
772 PCI_DMA_FROMDEVICE);
773 dev_kfree_skb(*sk_buff);
774 *sk_buff = NULL;
775 sis190_make_unusable_by_asic(desc);
776 }
777
778 static void sis190_rx_clear(struct sis190_private *tp)
779 {
780 unsigned int i;
781
782 for (i = 0; i < NUM_RX_DESC; i++) {
783 if (!tp->Rx_skbuff[i])
784 continue;
785 sis190_free_rx_skb(tp, tp->Rx_skbuff + i, tp->RxDescRing + i);
786 }
787 }
788
789 static void sis190_init_ring_indexes(struct sis190_private *tp)
790 {
791 tp->dirty_tx = tp->dirty_rx = tp->cur_tx = tp->cur_rx = 0;
792 }
793
794 static int sis190_init_ring(struct net_device *dev)
795 {
796 struct sis190_private *tp = netdev_priv(dev);
797
798 sis190_init_ring_indexes(tp);
799
800 memset(tp->Tx_skbuff, 0x0, NUM_TX_DESC * sizeof(struct sk_buff *));
801 memset(tp->Rx_skbuff, 0x0, NUM_RX_DESC * sizeof(struct sk_buff *));
802
803 if (sis190_rx_fill(tp, dev, 0, NUM_RX_DESC) != NUM_RX_DESC)
804 goto err_rx_clear;
805
806 sis190_mark_as_last_descriptor(tp->RxDescRing + NUM_RX_DESC - 1);
807
808 return 0;
809
810 err_rx_clear:
811 sis190_rx_clear(tp);
812 return -ENOMEM;
813 }
814
815 static void sis190_set_rx_mode(struct net_device *dev)
816 {
817 struct sis190_private *tp = netdev_priv(dev);
818 void __iomem *ioaddr = tp->mmio_addr;
819 unsigned long flags;
820 u32 mc_filter[2]; /* Multicast hash filter */
821 u16 rx_mode;
822
823 if (dev->flags & IFF_PROMISC) {
824 /* Unconditionally log net taps. */
825 net_drv(tp, KERN_NOTICE "%s: Promiscuous mode enabled.\n",
826 dev->name);
827 rx_mode =
828 AcceptBroadcast | AcceptMulticast | AcceptMyPhys |
829 AcceptAllPhys;
830 mc_filter[1] = mc_filter[0] = 0xffffffff;
831 } else if ((dev->mc_count > multicast_filter_limit) ||
832 (dev->flags & IFF_ALLMULTI)) {
833 /* Too many to filter perfectly -- accept all multicasts. */
834 rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
835 mc_filter[1] = mc_filter[0] = 0xffffffff;
836 } else {
837 struct dev_mc_list *mclist;
838 unsigned int i;
839
840 rx_mode = AcceptBroadcast | AcceptMyPhys;
841 mc_filter[1] = mc_filter[0] = 0;
842 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
843 i++, mclist = mclist->next) {
844 int bit_nr =
845 ether_crc(ETH_ALEN, mclist->dmi_addr) & 0x3f;
846 mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
847 rx_mode |= AcceptMulticast;
848 }
849 }
850
851 spin_lock_irqsave(&tp->lock, flags);
852
853 SIS_W16(RxMacControl, rx_mode | 0x2);
854 SIS_W32(RxHashTable, mc_filter[0]);
855 SIS_W32(RxHashTable + 4, mc_filter[1]);
856
857 spin_unlock_irqrestore(&tp->lock, flags);
858 }
859
860 static void sis190_soft_reset(void __iomem *ioaddr)
861 {
862 SIS_W32(IntrControl, 0x8000);
863 SIS_PCI_COMMIT();
864 msleep(1);
865 SIS_W32(IntrControl, 0x0);
866 sis190_asic_down(ioaddr);
867 msleep(1);
868 }
869
870 static void sis190_hw_start(struct net_device *dev)
871 {
872 struct sis190_private *tp = netdev_priv(dev);
873 void __iomem *ioaddr = tp->mmio_addr;
874
875 sis190_soft_reset(ioaddr);
876
877 SIS_W32(TxDescStartAddr, tp->tx_dma);
878 SIS_W32(RxDescStartAddr, tp->rx_dma);
879
880 SIS_W32(IntrStatus, 0xffffffff);
881 SIS_W32(IntrMask, 0x0);
882 SIS_W32(GMIIControl, 0x0);
883 SIS_W32(TxMacControl, 0x60);
884 SIS_W16(RxMacControl, 0x02);
885 SIS_W32(RxHashTable, 0x0);
886 SIS_W32(0x6c, 0x0);
887 SIS_W32(RxWolCtrl, 0x0);
888 SIS_W32(RxWolData, 0x0);
889
890 SIS_PCI_COMMIT();
891
892 sis190_set_rx_mode(dev);
893
894 /* Enable all known interrupts by setting the interrupt mask. */
895 SIS_W32(IntrMask, sis190_intr_mask);
896
897 SIS_W32(TxControl, 0x1a00 | CmdTxEnb);
898 SIS_W32(RxControl, 0x1a1d);
899
900 netif_start_queue(dev);
901 }
902
903 static void sis190_phy_task(void * data)
904 {
905 struct net_device *dev = data;
906 struct sis190_private *tp = netdev_priv(dev);
907 void __iomem *ioaddr = tp->mmio_addr;
908 int phy_id = tp->mii_if.phy_id;
909 u16 val;
910
911 rtnl_lock();
912
913 val = mdio_read(ioaddr, phy_id, MII_BMCR);
914 if (val & BMCR_RESET) {
915 // FIXME: needlessly high ? -- FR 02/07/2005
916 mod_timer(&tp->timer, jiffies + HZ/10);
917 } else if (!(mdio_read_latched(ioaddr, phy_id, MII_BMSR) &
918 BMSR_ANEGCOMPLETE)) {
919 net_link(tp, KERN_WARNING "%s: PHY reset until link up.\n",
920 dev->name);
921 netif_carrier_off(dev);
922 mdio_write(ioaddr, phy_id, MII_BMCR, val | BMCR_RESET);
923 mod_timer(&tp->timer, jiffies + SIS190_PHY_TIMEOUT);
924 } else {
925 /* Rejoice ! */
926 struct {
927 int val;
928 u32 ctl;
929 const char *msg;
930 } reg31[] = {
931 { LPA_1000XFULL | LPA_SLCT, 0x07000c00 | 0x00001000,
932 "1000 Mbps Full Duplex" },
933 { LPA_1000XHALF | LPA_SLCT, 0x07000c00,
934 "1000 Mbps Half Duplex" },
935 { LPA_100FULL, 0x04000800 | 0x00001000,
936 "100 Mbps Full Duplex" },
937 { LPA_100HALF, 0x04000800,
938 "100 Mbps Half Duplex" },
939 { LPA_10FULL, 0x04000400 | 0x00001000,
940 "10 Mbps Full Duplex" },
941 { LPA_10HALF, 0x04000400,
942 "10 Mbps Half Duplex" },
943 { 0, 0x04000400, "unknown" }
944 }, *p;
945 u16 adv;
946
947 val = mdio_read(ioaddr, phy_id, 0x1f);
948 net_link(tp, KERN_INFO "%s: mii ext = %04x.\n", dev->name, val);
949
950 val = mdio_read(ioaddr, phy_id, MII_LPA);
951 adv = mdio_read(ioaddr, phy_id, MII_ADVERTISE);
952 net_link(tp, KERN_INFO "%s: mii lpa = %04x adv = %04x.\n",
953 dev->name, val, adv);
954
955 val &= adv;
956
957 for (p = reg31; p->val; p++) {
958 if ((val & p->val) == p->val)
959 break;
960 }
961
962 p->ctl |= SIS_R32(StationControl) & ~0x0f001c00;
963
964 if ((tp->features & F_HAS_RGMII) &&
965 (tp->features & F_PHY_BCM5461)) {
966 // Set Tx Delay in RGMII mode.
967 mdio_write(ioaddr, phy_id, 0x18, 0xf1c7);
968 udelay(200);
969 mdio_write(ioaddr, phy_id, 0x1c, 0x8c00);
970 p->ctl |= 0x03000000;
971 }
972
973 SIS_W32(StationControl, p->ctl);
974
975 if (tp->features & F_HAS_RGMII) {
976 SIS_W32(RGDelay, 0x0441);
977 SIS_W32(RGDelay, 0x0440);
978 }
979
980 net_link(tp, KERN_INFO "%s: link on %s mode.\n", dev->name,
981 p->msg);
982 netif_carrier_on(dev);
983 }
984
985 rtnl_unlock();
986 }
987
988 static void sis190_phy_timer(unsigned long __opaque)
989 {
990 struct net_device *dev = (struct net_device *)__opaque;
991 struct sis190_private *tp = netdev_priv(dev);
992
993 if (likely(netif_running(dev)))
994 schedule_work(&tp->phy_task);
995 }
996
997 static inline void sis190_delete_timer(struct net_device *dev)
998 {
999 struct sis190_private *tp = netdev_priv(dev);
1000
1001 del_timer_sync(&tp->timer);
1002 }
1003
1004 static inline void sis190_request_timer(struct net_device *dev)
1005 {
1006 struct sis190_private *tp = netdev_priv(dev);
1007 struct timer_list *timer = &tp->timer;
1008
1009 init_timer(timer);
1010 timer->expires = jiffies + SIS190_PHY_TIMEOUT;
1011 timer->data = (unsigned long)dev;
1012 timer->function = sis190_phy_timer;
1013 add_timer(timer);
1014 }
1015
1016 static void sis190_set_rxbufsize(struct sis190_private *tp,
1017 struct net_device *dev)
1018 {
1019 unsigned int mtu = dev->mtu;
1020
1021 tp->rx_buf_sz = (mtu > RX_BUF_SIZE) ? mtu + ETH_HLEN + 8 : RX_BUF_SIZE;
1022 /* RxDesc->size has a licence to kill the lower bits */
1023 if (tp->rx_buf_sz & 0x07) {
1024 tp->rx_buf_sz += 8;
1025 tp->rx_buf_sz &= RX_BUF_MASK;
1026 }
1027 }
1028
1029 static int sis190_open(struct net_device *dev)
1030 {
1031 struct sis190_private *tp = netdev_priv(dev);
1032 struct pci_dev *pdev = tp->pci_dev;
1033 int rc = -ENOMEM;
1034
1035 sis190_set_rxbufsize(tp, dev);
1036
1037 /*
1038 * Rx and Tx descriptors need 256 bytes alignment.
1039 * pci_alloc_consistent() guarantees a stronger alignment.
1040 */
1041 tp->TxDescRing = pci_alloc_consistent(pdev, TX_RING_BYTES, &tp->tx_dma);
1042 if (!tp->TxDescRing)
1043 goto out;
1044
1045 tp->RxDescRing = pci_alloc_consistent(pdev, RX_RING_BYTES, &tp->rx_dma);
1046 if (!tp->RxDescRing)
1047 goto err_free_tx_0;
1048
1049 rc = sis190_init_ring(dev);
1050 if (rc < 0)
1051 goto err_free_rx_1;
1052
1053 INIT_WORK(&tp->phy_task, sis190_phy_task, dev);
1054
1055 sis190_request_timer(dev);
1056
1057 rc = request_irq(dev->irq, sis190_interrupt, SA_SHIRQ, dev->name, dev);
1058 if (rc < 0)
1059 goto err_release_timer_2;
1060
1061 sis190_hw_start(dev);
1062 out:
1063 return rc;
1064
1065 err_release_timer_2:
1066 sis190_delete_timer(dev);
1067 sis190_rx_clear(tp);
1068 err_free_rx_1:
1069 pci_free_consistent(tp->pci_dev, RX_RING_BYTES, tp->RxDescRing,
1070 tp->rx_dma);
1071 err_free_tx_0:
1072 pci_free_consistent(tp->pci_dev, TX_RING_BYTES, tp->TxDescRing,
1073 tp->tx_dma);
1074 goto out;
1075 }
1076
1077 static void sis190_tx_clear(struct sis190_private *tp)
1078 {
1079 unsigned int i;
1080
1081 for (i = 0; i < NUM_TX_DESC; i++) {
1082 struct sk_buff *skb = tp->Tx_skbuff[i];
1083
1084 if (!skb)
1085 continue;
1086
1087 sis190_unmap_tx_skb(tp->pci_dev, skb, tp->TxDescRing + i);
1088 tp->Tx_skbuff[i] = NULL;
1089 dev_kfree_skb(skb);
1090
1091 tp->stats.tx_dropped++;
1092 }
1093 tp->cur_tx = tp->dirty_tx = 0;
1094 }
1095
1096 static void sis190_down(struct net_device *dev)
1097 {
1098 struct sis190_private *tp = netdev_priv(dev);
1099 void __iomem *ioaddr = tp->mmio_addr;
1100 unsigned int poll_locked = 0;
1101
1102 sis190_delete_timer(dev);
1103
1104 netif_stop_queue(dev);
1105
1106 flush_scheduled_work();
1107
1108 do {
1109 spin_lock_irq(&tp->lock);
1110
1111 sis190_asic_down(ioaddr);
1112
1113 spin_unlock_irq(&tp->lock);
1114
1115 synchronize_irq(dev->irq);
1116
1117 if (!poll_locked) {
1118 netif_poll_disable(dev);
1119 poll_locked++;
1120 }
1121
1122 synchronize_sched();
1123
1124 } while (SIS_R32(IntrMask));
1125
1126 sis190_tx_clear(tp);
1127 sis190_rx_clear(tp);
1128 }
1129
1130 static int sis190_close(struct net_device *dev)
1131 {
1132 struct sis190_private *tp = netdev_priv(dev);
1133 struct pci_dev *pdev = tp->pci_dev;
1134
1135 sis190_down(dev);
1136
1137 free_irq(dev->irq, dev);
1138
1139 netif_poll_enable(dev);
1140
1141 pci_free_consistent(pdev, TX_RING_BYTES, tp->TxDescRing, tp->tx_dma);
1142 pci_free_consistent(pdev, RX_RING_BYTES, tp->RxDescRing, tp->rx_dma);
1143
1144 tp->TxDescRing = NULL;
1145 tp->RxDescRing = NULL;
1146
1147 return 0;
1148 }
1149
1150 static int sis190_start_xmit(struct sk_buff *skb, struct net_device *dev)
1151 {
1152 struct sis190_private *tp = netdev_priv(dev);
1153 void __iomem *ioaddr = tp->mmio_addr;
1154 u32 len, entry, dirty_tx;
1155 struct TxDesc *desc;
1156 dma_addr_t mapping;
1157
1158 if (unlikely(skb->len < ETH_ZLEN)) {
1159 skb = skb_padto(skb, ETH_ZLEN);
1160 if (!skb) {
1161 tp->stats.tx_dropped++;
1162 goto out;
1163 }
1164 len = ETH_ZLEN;
1165 } else {
1166 len = skb->len;
1167 }
1168
1169 entry = tp->cur_tx % NUM_TX_DESC;
1170 desc = tp->TxDescRing + entry;
1171
1172 if (unlikely(le32_to_cpu(desc->status) & OWNbit)) {
1173 netif_stop_queue(dev);
1174 net_tx_err(tp, KERN_ERR PFX
1175 "%s: BUG! Tx Ring full when queue awake!\n",
1176 dev->name);
1177 return NETDEV_TX_BUSY;
1178 }
1179
1180 mapping = pci_map_single(tp->pci_dev, skb->data, len, PCI_DMA_TODEVICE);
1181
1182 tp->Tx_skbuff[entry] = skb;
1183
1184 desc->PSize = cpu_to_le32(len);
1185 desc->addr = cpu_to_le32(mapping);
1186
1187 desc->size = cpu_to_le32(len);
1188 if (entry == (NUM_TX_DESC - 1))
1189 desc->size |= cpu_to_le32(RingEnd);
1190
1191 wmb();
1192
1193 desc->status = cpu_to_le32(OWNbit | INTbit | DEFbit | CRCbit | PADbit);
1194
1195 tp->cur_tx++;
1196
1197 smp_wmb();
1198
1199 SIS_W32(TxControl, 0x1a00 | CmdReset | CmdTxEnb);
1200
1201 dev->trans_start = jiffies;
1202
1203 dirty_tx = tp->dirty_tx;
1204 if ((tp->cur_tx - NUM_TX_DESC) == dirty_tx) {
1205 netif_stop_queue(dev);
1206 smp_rmb();
1207 if (dirty_tx != tp->dirty_tx)
1208 netif_wake_queue(dev);
1209 }
1210 out:
1211 return NETDEV_TX_OK;
1212 }
1213
1214 static struct net_device_stats *sis190_get_stats(struct net_device *dev)
1215 {
1216 struct sis190_private *tp = netdev_priv(dev);
1217
1218 return &tp->stats;
1219 }
1220
1221 static void sis190_free_phy(struct list_head *first_phy)
1222 {
1223 struct sis190_phy *cur, *next;
1224
1225 list_for_each_entry_safe(cur, next, first_phy, list) {
1226 kfree(cur);
1227 }
1228 }
1229
1230 /**
1231 * sis190_default_phy - Select default PHY for sis190 mac.
1232 * @dev: the net device to probe for
1233 *
1234 * Select first detected PHY with link as default.
1235 * If no one is link on, select PHY whose types is HOME as default.
1236 * If HOME doesn't exist, select LAN.
1237 */
1238 static u16 sis190_default_phy(struct net_device *dev)
1239 {
1240 struct sis190_phy *phy, *phy_home, *phy_default, *phy_lan;
1241 struct sis190_private *tp = netdev_priv(dev);
1242 struct mii_if_info *mii_if = &tp->mii_if;
1243 void __iomem *ioaddr = tp->mmio_addr;
1244 u16 status;
1245
1246 phy_home = phy_default = phy_lan = NULL;
1247
1248 list_for_each_entry(phy, &tp->first_phy, list) {
1249 status = mdio_read_latched(ioaddr, phy->phy_id, MII_BMSR);
1250
1251 // Link ON & Not select default PHY & not ghost PHY.
1252 if ((status & BMSR_LSTATUS) &&
1253 !phy_default &&
1254 (phy->type != UNKNOWN)) {
1255 phy_default = phy;
1256 } else {
1257 status = mdio_read(ioaddr, phy->phy_id, MII_BMCR);
1258 mdio_write(ioaddr, phy->phy_id, MII_BMCR,
1259 status | BMCR_ANENABLE | BMCR_ISOLATE);
1260 if (phy->type == HOME)
1261 phy_home = phy;
1262 else if (phy->type == LAN)
1263 phy_lan = phy;
1264 }
1265 }
1266
1267 if (!phy_default) {
1268 if (phy_home)
1269 phy_default = phy_home;
1270 else if (phy_lan)
1271 phy_default = phy_lan;
1272 else
1273 phy_default = list_entry(&tp->first_phy,
1274 struct sis190_phy, list);
1275 }
1276
1277 if (mii_if->phy_id != phy_default->phy_id) {
1278 mii_if->phy_id = phy_default->phy_id;
1279 net_probe(tp, KERN_INFO
1280 "%s: Using transceiver at address %d as default.\n",
1281 pci_name(tp->pci_dev), mii_if->phy_id);
1282 }
1283
1284 status = mdio_read(ioaddr, mii_if->phy_id, MII_BMCR);
1285 status &= (~BMCR_ISOLATE);
1286
1287 mdio_write(ioaddr, mii_if->phy_id, MII_BMCR, status);
1288 status = mdio_read_latched(ioaddr, mii_if->phy_id, MII_BMSR);
1289
1290 return status;
1291 }
1292
1293 static void sis190_init_phy(struct net_device *dev, struct sis190_private *tp,
1294 struct sis190_phy *phy, unsigned int phy_id,
1295 u16 mii_status)
1296 {
1297 void __iomem *ioaddr = tp->mmio_addr;
1298 struct mii_chip_info *p;
1299
1300 INIT_LIST_HEAD(&phy->list);
1301 phy->status = mii_status;
1302 phy->phy_id = phy_id;
1303
1304 phy->id[0] = mdio_read(ioaddr, phy_id, MII_PHYSID1);
1305 phy->id[1] = mdio_read(ioaddr, phy_id, MII_PHYSID2);
1306
1307 for (p = mii_chip_table; p->type; p++) {
1308 if ((p->id[0] == phy->id[0]) &&
1309 (p->id[1] == (phy->id[1] & 0xfff0))) {
1310 break;
1311 }
1312 }
1313
1314 if (p->id[1]) {
1315 phy->type = (p->type == MIX) ?
1316 ((mii_status & (BMSR_100FULL | BMSR_100HALF)) ?
1317 LAN : HOME) : p->type;
1318 tp->features |= p->feature;
1319 } else
1320 phy->type = UNKNOWN;
1321
1322 net_probe(tp, KERN_INFO "%s: %s transceiver at address %d.\n",
1323 pci_name(tp->pci_dev),
1324 (phy->type == UNKNOWN) ? "Unknown PHY" : p->name, phy_id);
1325 }
1326
1327 static void sis190_mii_probe_88e1111_fixup(struct sis190_private *tp)
1328 {
1329 if (tp->features & F_PHY_88E1111) {
1330 void __iomem *ioaddr = tp->mmio_addr;
1331 int phy_id = tp->mii_if.phy_id;
1332 u16 reg[2][2] = {
1333 { 0x808b, 0x0ce1 },
1334 { 0x808f, 0x0c60 }
1335 }, *p;
1336
1337 p = (tp->features & F_HAS_RGMII) ? reg[0] : reg[1];
1338
1339 mdio_write(ioaddr, phy_id, 0x1b, p[0]);
1340 udelay(200);
1341 mdio_write(ioaddr, phy_id, 0x14, p[1]);
1342 udelay(200);
1343 }
1344 }
1345
1346 /**
1347 * sis190_mii_probe - Probe MII PHY for sis190
1348 * @dev: the net device to probe for
1349 *
1350 * Search for total of 32 possible mii phy addresses.
1351 * Identify and set current phy if found one,
1352 * return error if it failed to found.
1353 */
1354 static int __devinit sis190_mii_probe(struct net_device *dev)
1355 {
1356 struct sis190_private *tp = netdev_priv(dev);
1357 struct mii_if_info *mii_if = &tp->mii_if;
1358 void __iomem *ioaddr = tp->mmio_addr;
1359 int phy_id;
1360 int rc = 0;
1361
1362 INIT_LIST_HEAD(&tp->first_phy);
1363
1364 for (phy_id = 0; phy_id < PHY_MAX_ADDR; phy_id++) {
1365 struct sis190_phy *phy;
1366 u16 status;
1367
1368 status = mdio_read_latched(ioaddr, phy_id, MII_BMSR);
1369
1370 // Try next mii if the current one is not accessible.
1371 if (status == 0xffff || status == 0x0000)
1372 continue;
1373
1374 phy = kmalloc(sizeof(*phy), GFP_KERNEL);
1375 if (!phy) {
1376 sis190_free_phy(&tp->first_phy);
1377 rc = -ENOMEM;
1378 goto out;
1379 }
1380
1381 sis190_init_phy(dev, tp, phy, phy_id, status);
1382
1383 list_add(&tp->first_phy, &phy->list);
1384 }
1385
1386 if (list_empty(&tp->first_phy)) {
1387 net_probe(tp, KERN_INFO "%s: No MII transceivers found!\n",
1388 pci_name(tp->pci_dev));
1389 rc = -EIO;
1390 goto out;
1391 }
1392
1393 /* Select default PHY for mac */
1394 sis190_default_phy(dev);
1395
1396 sis190_mii_probe_88e1111_fixup(tp);
1397
1398 mii_if->dev = dev;
1399 mii_if->mdio_read = __mdio_read;
1400 mii_if->mdio_write = __mdio_write;
1401 mii_if->phy_id_mask = PHY_ID_ANY;
1402 mii_if->reg_num_mask = MII_REG_ANY;
1403 out:
1404 return rc;
1405 }
1406
1407 static void __devexit sis190_mii_remove(struct net_device *dev)
1408 {
1409 struct sis190_private *tp = netdev_priv(dev);
1410
1411 sis190_free_phy(&tp->first_phy);
1412 }
1413
1414 static void sis190_release_board(struct pci_dev *pdev)
1415 {
1416 struct net_device *dev = pci_get_drvdata(pdev);
1417 struct sis190_private *tp = netdev_priv(dev);
1418
1419 iounmap(tp->mmio_addr);
1420 pci_release_regions(pdev);
1421 pci_disable_device(pdev);
1422 free_netdev(dev);
1423 }
1424
1425 static struct net_device * __devinit sis190_init_board(struct pci_dev *pdev)
1426 {
1427 struct sis190_private *tp;
1428 struct net_device *dev;
1429 void __iomem *ioaddr;
1430 int rc;
1431
1432 dev = alloc_etherdev(sizeof(*tp));
1433 if (!dev) {
1434 net_drv(&debug, KERN_ERR PFX "unable to alloc new ethernet\n");
1435 rc = -ENOMEM;
1436 goto err_out_0;
1437 }
1438
1439 SET_MODULE_OWNER(dev);
1440 SET_NETDEV_DEV(dev, &pdev->dev);
1441
1442 tp = netdev_priv(dev);
1443 tp->msg_enable = netif_msg_init(debug.msg_enable, SIS190_MSG_DEFAULT);
1444
1445 rc = pci_enable_device(pdev);
1446 if (rc < 0) {
1447 net_probe(tp, KERN_ERR "%s: enable failure\n", pci_name(pdev));
1448 goto err_free_dev_1;
1449 }
1450
1451 rc = -ENODEV;
1452
1453 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
1454 net_probe(tp, KERN_ERR "%s: region #0 is no MMIO resource.\n",
1455 pci_name(pdev));
1456 goto err_pci_disable_2;
1457 }
1458 if (pci_resource_len(pdev, 0) < SIS190_REGS_SIZE) {
1459 net_probe(tp, KERN_ERR "%s: invalid PCI region size(s).\n",
1460 pci_name(pdev));
1461 goto err_pci_disable_2;
1462 }
1463
1464 rc = pci_request_regions(pdev, DRV_NAME);
1465 if (rc < 0) {
1466 net_probe(tp, KERN_ERR PFX "%s: could not request regions.\n",
1467 pci_name(pdev));
1468 goto err_pci_disable_2;
1469 }
1470
1471 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
1472 if (rc < 0) {
1473 net_probe(tp, KERN_ERR "%s: DMA configuration failed.\n",
1474 pci_name(pdev));
1475 goto err_free_res_3;
1476 }
1477
1478 pci_set_master(pdev);
1479
1480 ioaddr = ioremap(pci_resource_start(pdev, 0), SIS190_REGS_SIZE);
1481 if (!ioaddr) {
1482 net_probe(tp, KERN_ERR "%s: cannot remap MMIO, aborting\n",
1483 pci_name(pdev));
1484 rc = -EIO;
1485 goto err_free_res_3;
1486 }
1487
1488 tp->pci_dev = pdev;
1489 tp->mmio_addr = ioaddr;
1490
1491 sis190_irq_mask_and_ack(ioaddr);
1492
1493 sis190_soft_reset(ioaddr);
1494 out:
1495 return dev;
1496
1497 err_free_res_3:
1498 pci_release_regions(pdev);
1499 err_pci_disable_2:
1500 pci_disable_device(pdev);
1501 err_free_dev_1:
1502 free_netdev(dev);
1503 err_out_0:
1504 dev = ERR_PTR(rc);
1505 goto out;
1506 }
1507
1508 static void sis190_tx_timeout(struct net_device *dev)
1509 {
1510 struct sis190_private *tp = netdev_priv(dev);
1511 void __iomem *ioaddr = tp->mmio_addr;
1512 u8 tmp8;
1513
1514 /* Disable Tx, if not already */
1515 tmp8 = SIS_R8(TxControl);
1516 if (tmp8 & CmdTxEnb)
1517 SIS_W8(TxControl, tmp8 & ~CmdTxEnb);
1518
1519
1520 net_tx_err(tp, KERN_INFO "%s: Transmit timeout, status %08x %08x.\n",
1521 dev->name, SIS_R32(TxControl), SIS_R32(TxSts));
1522
1523 /* Disable interrupts by clearing the interrupt mask. */
1524 SIS_W32(IntrMask, 0x0000);
1525
1526 /* Stop a shared interrupt from scavenging while we are. */
1527 spin_lock_irq(&tp->lock);
1528 sis190_tx_clear(tp);
1529 spin_unlock_irq(&tp->lock);
1530
1531 /* ...and finally, reset everything. */
1532 sis190_hw_start(dev);
1533
1534 netif_wake_queue(dev);
1535 }
1536
1537 static void sis190_set_rgmii(struct sis190_private *tp, u8 reg)
1538 {
1539 tp->features |= (reg & 0x80) ? F_HAS_RGMII : 0;
1540 }
1541
1542 static int __devinit sis190_get_mac_addr_from_eeprom(struct pci_dev *pdev,
1543 struct net_device *dev)
1544 {
1545 struct sis190_private *tp = netdev_priv(dev);
1546 void __iomem *ioaddr = tp->mmio_addr;
1547 u16 sig;
1548 int i;
1549
1550 net_probe(tp, KERN_INFO "%s: Read MAC address from EEPROM\n",
1551 pci_name(pdev));
1552
1553 /* Check to see if there is a sane EEPROM */
1554 sig = (u16) sis190_read_eeprom(ioaddr, EEPROMSignature);
1555
1556 if ((sig == 0xffff) || (sig == 0x0000)) {
1557 net_probe(tp, KERN_INFO "%s: Error EEPROM read %x.\n",
1558 pci_name(pdev), sig);
1559 return -EIO;
1560 }
1561
1562 /* Get MAC address from EEPROM */
1563 for (i = 0; i < MAC_ADDR_LEN / 2; i++) {
1564 __le16 w = sis190_read_eeprom(ioaddr, EEPROMMACAddr + i);
1565
1566 ((u16 *)dev->dev_addr)[0] = le16_to_cpu(w);
1567 }
1568
1569 sis190_set_rgmii(tp, sis190_read_eeprom(ioaddr, EEPROMInfo));
1570
1571 return 0;
1572 }
1573
1574 /**
1575 * sis190_get_mac_addr_from_apc - Get MAC address for SiS965 model
1576 * @pdev: PCI device
1577 * @dev: network device to get address for
1578 *
1579 * SiS965 model, use APC CMOS RAM to store MAC address.
1580 * APC CMOS RAM is accessed through ISA bridge.
1581 * MAC address is read into @net_dev->dev_addr.
1582 */
1583 static int __devinit sis190_get_mac_addr_from_apc(struct pci_dev *pdev,
1584 struct net_device *dev)
1585 {
1586 struct sis190_private *tp = netdev_priv(dev);
1587 struct pci_dev *isa_bridge;
1588 u8 reg, tmp8;
1589 int i;
1590
1591 net_probe(tp, KERN_INFO "%s: Read MAC address from APC.\n",
1592 pci_name(pdev));
1593
1594 isa_bridge = pci_get_device(PCI_VENDOR_ID_SI, 0x0965, NULL);
1595 if (!isa_bridge) {
1596 net_probe(tp, KERN_INFO "%s: Can not find ISA bridge.\n",
1597 pci_name(pdev));
1598 return -EIO;
1599 }
1600
1601 /* Enable port 78h & 79h to access APC Registers. */
1602 pci_read_config_byte(isa_bridge, 0x48, &tmp8);
1603 reg = (tmp8 & ~0x02);
1604 pci_write_config_byte(isa_bridge, 0x48, reg);
1605 udelay(50);
1606 pci_read_config_byte(isa_bridge, 0x48, &reg);
1607
1608 for (i = 0; i < MAC_ADDR_LEN; i++) {
1609 outb(0x9 + i, 0x78);
1610 dev->dev_addr[i] = inb(0x79);
1611 }
1612
1613 outb(0x12, 0x78);
1614 reg = inb(0x79);
1615
1616 sis190_set_rgmii(tp, reg);
1617
1618 /* Restore the value to ISA Bridge */
1619 pci_write_config_byte(isa_bridge, 0x48, tmp8);
1620 pci_dev_put(isa_bridge);
1621
1622 return 0;
1623 }
1624
1625 /**
1626 * sis190_init_rxfilter - Initialize the Rx filter
1627 * @dev: network device to initialize
1628 *
1629 * Set receive filter address to our MAC address
1630 * and enable packet filtering.
1631 */
1632 static inline void sis190_init_rxfilter(struct net_device *dev)
1633 {
1634 struct sis190_private *tp = netdev_priv(dev);
1635 void __iomem *ioaddr = tp->mmio_addr;
1636 u16 ctl;
1637 int i;
1638
1639 ctl = SIS_R16(RxMacControl);
1640 /*
1641 * Disable packet filtering before setting filter.
1642 * Note: SiS's driver writes 32 bits but RxMacControl is 16 bits
1643 * only and followed by RxMacAddr (6 bytes). Strange. -- FR
1644 */
1645 SIS_W16(RxMacControl, ctl & ~0x0f00);
1646
1647 for (i = 0; i < MAC_ADDR_LEN; i++)
1648 SIS_W8(RxMacAddr + i, dev->dev_addr[i]);
1649
1650 SIS_W16(RxMacControl, ctl);
1651 SIS_PCI_COMMIT();
1652 }
1653
1654 static int sis190_get_mac_addr(struct pci_dev *pdev, struct net_device *dev)
1655 {
1656 u8 from;
1657
1658 pci_read_config_byte(pdev, 0x73, &from);
1659
1660 return (from & 0x00000001) ?
1661 sis190_get_mac_addr_from_apc(pdev, dev) :
1662 sis190_get_mac_addr_from_eeprom(pdev, dev);
1663 }
1664
1665 static void sis190_set_speed_auto(struct net_device *dev)
1666 {
1667 struct sis190_private *tp = netdev_priv(dev);
1668 void __iomem *ioaddr = tp->mmio_addr;
1669 int phy_id = tp->mii_if.phy_id;
1670 int val;
1671
1672 net_link(tp, KERN_INFO "%s: Enabling Auto-negotiation.\n", dev->name);
1673
1674 val = mdio_read(ioaddr, phy_id, MII_ADVERTISE);
1675
1676 // Enable 10/100 Full/Half Mode, leave MII_ADVERTISE bit4:0
1677 // unchanged.
1678 mdio_write(ioaddr, phy_id, MII_ADVERTISE, (val & ADVERTISE_SLCT) |
1679 ADVERTISE_100FULL | ADVERTISE_10FULL |
1680 ADVERTISE_100HALF | ADVERTISE_10HALF);
1681
1682 // Enable 1000 Full Mode.
1683 mdio_write(ioaddr, phy_id, MII_CTRL1000, ADVERTISE_1000FULL);
1684
1685 // Enable auto-negotiation and restart auto-negotiation.
1686 mdio_write(ioaddr, phy_id, MII_BMCR,
1687 BMCR_ANENABLE | BMCR_ANRESTART | BMCR_RESET);
1688 }
1689
1690 static int sis190_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1691 {
1692 struct sis190_private *tp = netdev_priv(dev);
1693
1694 return mii_ethtool_gset(&tp->mii_if, cmd);
1695 }
1696
1697 static int sis190_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1698 {
1699 struct sis190_private *tp = netdev_priv(dev);
1700
1701 return mii_ethtool_sset(&tp->mii_if, cmd);
1702 }
1703
1704 static void sis190_get_drvinfo(struct net_device *dev,
1705 struct ethtool_drvinfo *info)
1706 {
1707 struct sis190_private *tp = netdev_priv(dev);
1708
1709 strcpy(info->driver, DRV_NAME);
1710 strcpy(info->version, DRV_VERSION);
1711 strcpy(info->bus_info, pci_name(tp->pci_dev));
1712 }
1713
1714 static int sis190_get_regs_len(struct net_device *dev)
1715 {
1716 return SIS190_REGS_SIZE;
1717 }
1718
1719 static void sis190_get_regs(struct net_device *dev, struct ethtool_regs *regs,
1720 void *p)
1721 {
1722 struct sis190_private *tp = netdev_priv(dev);
1723 unsigned long flags;
1724
1725 if (regs->len > SIS190_REGS_SIZE)
1726 regs->len = SIS190_REGS_SIZE;
1727
1728 spin_lock_irqsave(&tp->lock, flags);
1729 memcpy_fromio(p, tp->mmio_addr, regs->len);
1730 spin_unlock_irqrestore(&tp->lock, flags);
1731 }
1732
1733 static int sis190_nway_reset(struct net_device *dev)
1734 {
1735 struct sis190_private *tp = netdev_priv(dev);
1736
1737 return mii_nway_restart(&tp->mii_if);
1738 }
1739
1740 static u32 sis190_get_msglevel(struct net_device *dev)
1741 {
1742 struct sis190_private *tp = netdev_priv(dev);
1743
1744 return tp->msg_enable;
1745 }
1746
1747 static void sis190_set_msglevel(struct net_device *dev, u32 value)
1748 {
1749 struct sis190_private *tp = netdev_priv(dev);
1750
1751 tp->msg_enable = value;
1752 }
1753
1754 static struct ethtool_ops sis190_ethtool_ops = {
1755 .get_settings = sis190_get_settings,
1756 .set_settings = sis190_set_settings,
1757 .get_drvinfo = sis190_get_drvinfo,
1758 .get_regs_len = sis190_get_regs_len,
1759 .get_regs = sis190_get_regs,
1760 .get_link = ethtool_op_get_link,
1761 .get_msglevel = sis190_get_msglevel,
1762 .set_msglevel = sis190_set_msglevel,
1763 .nway_reset = sis190_nway_reset,
1764 };
1765
1766 static int sis190_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1767 {
1768 struct sis190_private *tp = netdev_priv(dev);
1769
1770 return !netif_running(dev) ? -EINVAL :
1771 generic_mii_ioctl(&tp->mii_if, if_mii(ifr), cmd, NULL);
1772 }
1773
1774 static int __devinit sis190_init_one(struct pci_dev *pdev,
1775 const struct pci_device_id *ent)
1776 {
1777 static int printed_version = 0;
1778 struct sis190_private *tp;
1779 struct net_device *dev;
1780 void __iomem *ioaddr;
1781 int rc;
1782
1783 if (!printed_version) {
1784 net_drv(&debug, KERN_INFO SIS190_DRIVER_NAME " loaded.\n");
1785 printed_version = 1;
1786 }
1787
1788 dev = sis190_init_board(pdev);
1789 if (IS_ERR(dev)) {
1790 rc = PTR_ERR(dev);
1791 goto out;
1792 }
1793
1794 pci_set_drvdata(pdev, dev);
1795
1796 tp = netdev_priv(dev);
1797 ioaddr = tp->mmio_addr;
1798
1799 rc = sis190_get_mac_addr(pdev, dev);
1800 if (rc < 0)
1801 goto err_release_board;
1802
1803 sis190_init_rxfilter(dev);
1804
1805 INIT_WORK(&tp->phy_task, sis190_phy_task, dev);
1806
1807 dev->open = sis190_open;
1808 dev->stop = sis190_close;
1809 dev->do_ioctl = sis190_ioctl;
1810 dev->get_stats = sis190_get_stats;
1811 dev->tx_timeout = sis190_tx_timeout;
1812 dev->watchdog_timeo = SIS190_TX_TIMEOUT;
1813 dev->hard_start_xmit = sis190_start_xmit;
1814 #ifdef CONFIG_NET_POLL_CONTROLLER
1815 dev->poll_controller = sis190_netpoll;
1816 #endif
1817 dev->set_multicast_list = sis190_set_rx_mode;
1818 SET_ETHTOOL_OPS(dev, &sis190_ethtool_ops);
1819 dev->irq = pdev->irq;
1820 dev->base_addr = (unsigned long) 0xdead;
1821
1822 spin_lock_init(&tp->lock);
1823
1824 rc = sis190_mii_probe(dev);
1825 if (rc < 0)
1826 goto err_release_board;
1827
1828 rc = register_netdev(dev);
1829 if (rc < 0)
1830 goto err_remove_mii;
1831
1832 net_probe(tp, KERN_INFO "%s: %s at %p (IRQ: %d), "
1833 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x\n",
1834 pci_name(pdev), sis_chip_info[ent->driver_data].name,
1835 ioaddr, dev->irq,
1836 dev->dev_addr[0], dev->dev_addr[1],
1837 dev->dev_addr[2], dev->dev_addr[3],
1838 dev->dev_addr[4], dev->dev_addr[5]);
1839
1840 net_probe(tp, KERN_INFO "%s: %s mode.\n", dev->name,
1841 (tp->features & F_HAS_RGMII) ? "RGMII" : "GMII");
1842
1843 netif_carrier_off(dev);
1844
1845 sis190_set_speed_auto(dev);
1846 out:
1847 return rc;
1848
1849 err_remove_mii:
1850 sis190_mii_remove(dev);
1851 err_release_board:
1852 sis190_release_board(pdev);
1853 goto out;
1854 }
1855
1856 static void __devexit sis190_remove_one(struct pci_dev *pdev)
1857 {
1858 struct net_device *dev = pci_get_drvdata(pdev);
1859
1860 sis190_mii_remove(dev);
1861 unregister_netdev(dev);
1862 sis190_release_board(pdev);
1863 pci_set_drvdata(pdev, NULL);
1864 }
1865
1866 static struct pci_driver sis190_pci_driver = {
1867 .name = DRV_NAME,
1868 .id_table = sis190_pci_tbl,
1869 .probe = sis190_init_one,
1870 .remove = __devexit_p(sis190_remove_one),
1871 };
1872
1873 static int __init sis190_init_module(void)
1874 {
1875 return pci_module_init(&sis190_pci_driver);
1876 }
1877
1878 static void __exit sis190_cleanup_module(void)
1879 {
1880 pci_unregister_driver(&sis190_pci_driver);
1881 }
1882
1883 module_init(sis190_init_module);
1884 module_exit(sis190_cleanup_module);
Linux 2.6 libata-dev (mirror)