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Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
[wrt350n-kernel.git] / drivers / net / wan / wanxl.c
blobd4aab8a28b61bd097c7c1123472b335c79944de2
1 /*
2 * wanXL serial card driver for Linux
3 * host part
4 *
5 * Copyright (C) 2003 Krzysztof Halasa <khc@pm.waw.pl>
6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of version 2 of the GNU General Public License
9 * as published by the Free Software Foundation.
10 *
11 * Status:
12 * - Only DTE (external clock) support with NRZ and NRZI encodings
13 * - wanXL100 will require minor driver modifications, no access to hw
14 */
15
16 #include <linux/module.h>
17 #include <linux/kernel.h>
18 #include <linux/slab.h>
19 #include <linux/sched.h>
20 #include <linux/types.h>
21 #include <linux/fcntl.h>
22 #include <linux/string.h>
23 #include <linux/errno.h>
24 #include <linux/init.h>
25 #include <linux/ioport.h>
26 #include <linux/netdevice.h>
27 #include <linux/hdlc.h>
28 #include <linux/pci.h>
29 #include <linux/dma-mapping.h>
30 #include <linux/delay.h>
31 #include <asm/io.h>
32
33 #include "wanxl.h"
34
35 static const char* version = "wanXL serial card driver version: 0.48";
36
37 #define PLX_CTL_RESET 0x40000000 /* adapter reset */
38
39 #undef DEBUG_PKT
40 #undef DEBUG_PCI
41
42 /* MAILBOX #1 - PUTS COMMANDS */
43 #define MBX1_CMD_ABORTJ 0x85000000 /* Abort and Jump */
44 #ifdef __LITTLE_ENDIAN
45 #define MBX1_CMD_BSWAP 0x8C000001 /* little-endian Byte Swap Mode */
46 #else
47 #define MBX1_CMD_BSWAP 0x8C000000 /* big-endian Byte Swap Mode */
48 #endif
49
50 /* MAILBOX #2 - DRAM SIZE */
51 #define MBX2_MEMSZ_MASK 0xFFFF0000 /* PUTS Memory Size Register mask */
52
53
54 typedef struct {
55 struct net_device *dev;
56 struct card_t *card;
57 spinlock_t lock; /* for wanxl_xmit */
58 int node; /* physical port #0 - 3 */
59 unsigned int clock_type;
60 int tx_in, tx_out;
61 struct sk_buff *tx_skbs[TX_BUFFERS];
62 }port_t;
63
64
65 typedef struct {
66 desc_t rx_descs[RX_QUEUE_LENGTH];
67 port_status_t port_status[4];
68 }card_status_t;
69
70
71 typedef struct card_t {
72 int n_ports; /* 1, 2 or 4 ports */
73 u8 irq;
74
75 u8 __iomem *plx; /* PLX PCI9060 virtual base address */
76 struct pci_dev *pdev; /* for pci_name(pdev) */
77 int rx_in;
78 struct sk_buff *rx_skbs[RX_QUEUE_LENGTH];
79 card_status_t *status; /* shared between host and card */
80 dma_addr_t status_address;
81 port_t ports[0]; /* 1 - 4 port_t structures follow */
82 }card_t;
83
84
85
86 static inline port_t* dev_to_port(struct net_device *dev)
87 {
88 return (port_t *)dev_to_hdlc(dev)->priv;
89 }
90
91
92 static inline port_status_t* get_status(port_t *port)
93 {
94 return &port->card->status->port_status[port->node];
95 }
96
97
98 #ifdef DEBUG_PCI
99 static inline dma_addr_t pci_map_single_debug(struct pci_dev *pdev, void *ptr,
100 size_t size, int direction)
101 {
102 dma_addr_t addr = pci_map_single(pdev, ptr, size, direction);
103 if (addr + size > 0x100000000LL)
104 printk(KERN_CRIT "wanXL %s: pci_map_single() returned memory"
105 " at 0x%LX!\n", pci_name(pdev),
106 (unsigned long long)addr);
107 return addr;
108 }
109
110 #undef pci_map_single
111 #define pci_map_single pci_map_single_debug
112 #endif
113
114
115 /* Cable and/or personality module change interrupt service */
116 static inline void wanxl_cable_intr(port_t *port)
117 {
118 u32 value = get_status(port)->cable;
119 int valid = 1;
120 const char *cable, *pm, *dte = "", *dsr = "", *dcd = "";
121
122 switch(value & 0x7) {
123 case STATUS_CABLE_V35: cable = "V.35"; break;
124 case STATUS_CABLE_X21: cable = "X.21"; break;
125 case STATUS_CABLE_V24: cable = "V.24"; break;
126 case STATUS_CABLE_EIA530: cable = "EIA530"; break;
127 case STATUS_CABLE_NONE: cable = "no"; break;
128 default: cable = "invalid";
129 }
130
131 switch((value >> STATUS_CABLE_PM_SHIFT) & 0x7) {
132 case STATUS_CABLE_V35: pm = "V.35"; break;
133 case STATUS_CABLE_X21: pm = "X.21"; break;
134 case STATUS_CABLE_V24: pm = "V.24"; break;
135 case STATUS_CABLE_EIA530: pm = "EIA530"; break;
136 case STATUS_CABLE_NONE: pm = "no personality"; valid = 0; break;
137 default: pm = "invalid personality"; valid = 0;
138 }
139
140 if (valid) {
141 if ((value & 7) == ((value >> STATUS_CABLE_PM_SHIFT) & 7)) {
142 dsr = (value & STATUS_CABLE_DSR) ? ", DSR ON" :
143 ", DSR off";
144 dcd = (value & STATUS_CABLE_DCD) ? ", carrier ON" :
145 ", carrier off";
146 }
147 dte = (value & STATUS_CABLE_DCE) ? " DCE" : " DTE";
148 }
149 printk(KERN_INFO "%s: %s%s module, %s cable%s%s\n",
150 port->dev->name, pm, dte, cable, dsr, dcd);
151
152 if (value & STATUS_CABLE_DCD)
153 netif_carrier_on(port->dev);
154 else
155 netif_carrier_off(port->dev);
156 }
157
158
159
160 /* Transmit complete interrupt service */
161 static inline void wanxl_tx_intr(port_t *port)
162 {
163 struct net_device *dev = port->dev;
164 struct net_device_stats *stats = hdlc_stats(dev);
165 while (1) {
166 desc_t *desc = &get_status(port)->tx_descs[port->tx_in];
167 struct sk_buff *skb = port->tx_skbs[port->tx_in];
168
169 switch (desc->stat) {
170 case PACKET_FULL:
171 case PACKET_EMPTY:
172 netif_wake_queue(dev);
173 return;
174
175 case PACKET_UNDERRUN:
176 stats->tx_errors++;
177 stats->tx_fifo_errors++;
178 break;
179
180 default:
181 stats->tx_packets++;
182 stats->tx_bytes += skb->len;
183 }
184 desc->stat = PACKET_EMPTY; /* Free descriptor */
185 pci_unmap_single(port->card->pdev, desc->address, skb->len,
186 PCI_DMA_TODEVICE);
187 dev_kfree_skb_irq(skb);
188 port->tx_in = (port->tx_in + 1) % TX_BUFFERS;
189 }
190 }
191
192
193
194 /* Receive complete interrupt service */
195 static inline void wanxl_rx_intr(card_t *card)
196 {
197 desc_t *desc;
198 while (desc = &card->status->rx_descs[card->rx_in],
199 desc->stat != PACKET_EMPTY) {
200 if ((desc->stat & PACKET_PORT_MASK) > card->n_ports)
201 printk(KERN_CRIT "wanXL %s: received packet for"
202 " nonexistent port\n", pci_name(card->pdev));
203 else {
204 struct sk_buff *skb = card->rx_skbs[card->rx_in];
205 port_t *port = &card->ports[desc->stat &
206 PACKET_PORT_MASK];
207 struct net_device *dev = port->dev;
208 struct net_device_stats *stats = hdlc_stats(dev);
209
210 if (!skb)
211 stats->rx_dropped++;
212 else {
213 pci_unmap_single(card->pdev, desc->address,
214 BUFFER_LENGTH,
215 PCI_DMA_FROMDEVICE);
216 skb_put(skb, desc->length);
217
218 #ifdef DEBUG_PKT
219 printk(KERN_DEBUG "%s RX(%i):", dev->name,
220 skb->len);
221 debug_frame(skb);
222 #endif
223 stats->rx_packets++;
224 stats->rx_bytes += skb->len;
225 dev->last_rx = jiffies;
226 skb->protocol = hdlc_type_trans(skb, dev);
227 netif_rx(skb);
228 skb = NULL;
229 }
230
231 if (!skb) {
232 skb = dev_alloc_skb(BUFFER_LENGTH);
233 desc->address = skb ?
234 pci_map_single(card->pdev, skb->data,
235 BUFFER_LENGTH,
236 PCI_DMA_FROMDEVICE) : 0;
237 card->rx_skbs[card->rx_in] = skb;
238 }
239 }
240 desc->stat = PACKET_EMPTY; /* Free descriptor */
241 card->rx_in = (card->rx_in + 1) % RX_QUEUE_LENGTH;
242 }
243 }
244
245
246
247 static irqreturn_t wanxl_intr(int irq, void* dev_id)
248 {
249 card_t *card = dev_id;
250 int i;
251 u32 stat;
252 int handled = 0;
253
254
255 while((stat = readl(card->plx + PLX_DOORBELL_FROM_CARD)) != 0) {
256 handled = 1;
257 writel(stat, card->plx + PLX_DOORBELL_FROM_CARD);
258
259 for (i = 0; i < card->n_ports; i++) {
260 if (stat & (1 << (DOORBELL_FROM_CARD_TX_0 + i)))
261 wanxl_tx_intr(&card->ports[i]);
262 if (stat & (1 << (DOORBELL_FROM_CARD_CABLE_0 + i)))
263 wanxl_cable_intr(&card->ports[i]);
264 }
265 if (stat & (1 << DOORBELL_FROM_CARD_RX))
266 wanxl_rx_intr(card);
267 }
268
269 return IRQ_RETVAL(handled);
270 }
271
272
273
274 static int wanxl_xmit(struct sk_buff *skb, struct net_device *dev)
275 {
276 port_t *port = dev_to_port(dev);
277 desc_t *desc;
278
279 spin_lock(&port->lock);
280
281 desc = &get_status(port)->tx_descs[port->tx_out];
282 if (desc->stat != PACKET_EMPTY) {
283 /* should never happen - previous xmit should stop queue */
284 #ifdef DEBUG_PKT
285 printk(KERN_DEBUG "%s: transmitter buffer full\n", dev->name);
286 #endif
287 netif_stop_queue(dev);
288 spin_unlock_irq(&port->lock);
289 return 1; /* request packet to be queued */
290 }
291
292 #ifdef DEBUG_PKT
293 printk(KERN_DEBUG "%s TX(%i):", dev->name, skb->len);
294 debug_frame(skb);
295 #endif
296
297 port->tx_skbs[port->tx_out] = skb;
298 desc->address = pci_map_single(port->card->pdev, skb->data, skb->len,
299 PCI_DMA_TODEVICE);
300 desc->length = skb->len;
301 desc->stat = PACKET_FULL;
302 writel(1 << (DOORBELL_TO_CARD_TX_0 + port->node),
303 port->card->plx + PLX_DOORBELL_TO_CARD);
304 dev->trans_start = jiffies;
305
306 port->tx_out = (port->tx_out + 1) % TX_BUFFERS;
307
308 if (get_status(port)->tx_descs[port->tx_out].stat != PACKET_EMPTY) {
309 netif_stop_queue(dev);
310 #ifdef DEBUG_PKT
311 printk(KERN_DEBUG "%s: transmitter buffer full\n", dev->name);
312 #endif
313 }
314
315 spin_unlock(&port->lock);
316 return 0;
317 }
318
319
320
321 static int wanxl_attach(struct net_device *dev, unsigned short encoding,
322 unsigned short parity)
323 {
324 port_t *port = dev_to_port(dev);
325
326 if (encoding != ENCODING_NRZ &&
327 encoding != ENCODING_NRZI)
328 return -EINVAL;
329
330 if (parity != PARITY_NONE &&
331 parity != PARITY_CRC32_PR1_CCITT &&
332 parity != PARITY_CRC16_PR1_CCITT &&
333 parity != PARITY_CRC32_PR0_CCITT &&
334 parity != PARITY_CRC16_PR0_CCITT)
335 return -EINVAL;
336
337 get_status(port)->encoding = encoding;
338 get_status(port)->parity = parity;
339 return 0;
340 }
341
342
343
344 static int wanxl_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
345 {
346 const size_t size = sizeof(sync_serial_settings);
347 sync_serial_settings line;
348 port_t *port = dev_to_port(dev);
349
350 if (cmd != SIOCWANDEV)
351 return hdlc_ioctl(dev, ifr, cmd);
352
353 switch (ifr->ifr_settings.type) {
354 case IF_GET_IFACE:
355 ifr->ifr_settings.type = IF_IFACE_SYNC_SERIAL;
356 if (ifr->ifr_settings.size < size) {
357 ifr->ifr_settings.size = size; /* data size wanted */
358 return -ENOBUFS;
359 }
360 line.clock_type = get_status(port)->clocking;
361 line.clock_rate = 0;
362 line.loopback = 0;
363
364 if (copy_to_user(ifr->ifr_settings.ifs_ifsu.sync, &line, size))
365 return -EFAULT;
366 return 0;
367
368 case IF_IFACE_SYNC_SERIAL:
369 if (!capable(CAP_NET_ADMIN))
370 return -EPERM;
371 if (dev->flags & IFF_UP)
372 return -EBUSY;
373
374 if (copy_from_user(&line, ifr->ifr_settings.ifs_ifsu.sync,
375 size))
376 return -EFAULT;
377
378 if (line.clock_type != CLOCK_EXT &&
379 line.clock_type != CLOCK_TXFROMRX)
380 return -EINVAL; /* No such clock setting */
381
382 if (line.loopback != 0)
383 return -EINVAL;
384
385 get_status(port)->clocking = line.clock_type;
386 return 0;
387
388 default:
389 return hdlc_ioctl(dev, ifr, cmd);
390 }
391 }
392
393
394
395 static int wanxl_open(struct net_device *dev)
396 {
397 port_t *port = dev_to_port(dev);
398 u8 __iomem *dbr = port->card->plx + PLX_DOORBELL_TO_CARD;
399 unsigned long timeout;
400 int i;
401
402 if (get_status(port)->open) {
403 printk(KERN_ERR "%s: port already open\n", dev->name);
404 return -EIO;
405 }
406 if ((i = hdlc_open(dev)) != 0)
407 return i;
408
409 port->tx_in = port->tx_out = 0;
410 for (i = 0; i < TX_BUFFERS; i++)
411 get_status(port)->tx_descs[i].stat = PACKET_EMPTY;
412 /* signal the card */
413 writel(1 << (DOORBELL_TO_CARD_OPEN_0 + port->node), dbr);
414
415 timeout = jiffies + HZ;
416 do
417 if (get_status(port)->open) {
418 netif_start_queue(dev);
419 return 0;
420 }
421 while (time_after(timeout, jiffies));
422
423 printk(KERN_ERR "%s: unable to open port\n", dev->name);
424 /* ask the card to close the port, should it be still alive */
425 writel(1 << (DOORBELL_TO_CARD_CLOSE_0 + port->node), dbr);
426 return -EFAULT;
427 }
428
429
430
431 static int wanxl_close(struct net_device *dev)
432 {
433 port_t *port = dev_to_port(dev);
434 unsigned long timeout;
435 int i;
436
437 hdlc_close(dev);
438 /* signal the card */
439 writel(1 << (DOORBELL_TO_CARD_CLOSE_0 + port->node),
440 port->card->plx + PLX_DOORBELL_TO_CARD);
441
442 timeout = jiffies + HZ;
443 do
444 if (!get_status(port)->open)
445 break;
446 while (time_after(timeout, jiffies));
447
448 if (get_status(port)->open)
449 printk(KERN_ERR "%s: unable to close port\n", dev->name);
450
451 netif_stop_queue(dev);
452
453 for (i = 0; i < TX_BUFFERS; i++) {
454 desc_t *desc = &get_status(port)->tx_descs[i];
455
456 if (desc->stat != PACKET_EMPTY) {
457 desc->stat = PACKET_EMPTY;
458 pci_unmap_single(port->card->pdev, desc->address,
459 port->tx_skbs[i]->len,
460 PCI_DMA_TODEVICE);
461 dev_kfree_skb(port->tx_skbs[i]);
462 }
463 }
464 return 0;
465 }
466
467
468
469 static struct net_device_stats *wanxl_get_stats(struct net_device *dev)
470 {
471 struct net_device_stats *stats = hdlc_stats(dev);
472 port_t *port = dev_to_port(dev);
473
474 stats->rx_over_errors = get_status(port)->rx_overruns;
475 stats->rx_frame_errors = get_status(port)->rx_frame_errors;
476 stats->rx_errors = stats->rx_over_errors + stats->rx_frame_errors;
477 return stats;
478 }
479
480
481
482 static int wanxl_puts_command(card_t *card, u32 cmd)
483 {
484 unsigned long timeout = jiffies + 5 * HZ;
485
486 writel(cmd, card->plx + PLX_MAILBOX_1);
487 do {
488 if (readl(card->plx + PLX_MAILBOX_1) == 0)
489 return 0;
490
491 schedule();
492 }while (time_after(timeout, jiffies));
493
494 return -1;
495 }
496
497
498
499 static void wanxl_reset(card_t *card)
500 {
501 u32 old_value = readl(card->plx + PLX_CONTROL) & ~PLX_CTL_RESET;
502
503 writel(0x80, card->plx + PLX_MAILBOX_0);
504 writel(old_value | PLX_CTL_RESET, card->plx + PLX_CONTROL);
505 readl(card->plx + PLX_CONTROL); /* wait for posted write */
506 udelay(1);
507 writel(old_value, card->plx + PLX_CONTROL);
508 readl(card->plx + PLX_CONTROL); /* wait for posted write */
509 }
510
511
512
513 static void wanxl_pci_remove_one(struct pci_dev *pdev)
514 {
515 card_t *card = pci_get_drvdata(pdev);
516 int i;
517
518 for (i = 0; i < card->n_ports; i++) {
519 unregister_hdlc_device(card->ports[i].dev);
520 free_netdev(card->ports[i].dev);
521 }
522
523 /* unregister and free all host resources */
524 if (card->irq)
525 free_irq(card->irq, card);
526
527 wanxl_reset(card);
528
529 for (i = 0; i < RX_QUEUE_LENGTH; i++)
530 if (card->rx_skbs[i]) {
531 pci_unmap_single(card->pdev,
532 card->status->rx_descs[i].address,
533 BUFFER_LENGTH, PCI_DMA_FROMDEVICE);
534 dev_kfree_skb(card->rx_skbs[i]);
535 }
536
537 if (card->plx)
538 iounmap(card->plx);
539
540 if (card->status)
541 pci_free_consistent(pdev, sizeof(card_status_t),
542 card->status, card->status_address);
543
544 pci_release_regions(pdev);
545 pci_disable_device(pdev);
546 pci_set_drvdata(pdev, NULL);
547 kfree(card);
548 }
549
550
551 #include "wanxlfw.inc"
552
553 static int __devinit wanxl_pci_init_one(struct pci_dev *pdev,
554 const struct pci_device_id *ent)
555 {
556 card_t *card;
557 u32 ramsize, stat;
558 unsigned long timeout;
559 u32 plx_phy; /* PLX PCI base address */
560 u32 mem_phy; /* memory PCI base addr */
561 u8 __iomem *mem; /* memory virtual base addr */
562 int i, ports, alloc_size;
563
564 #ifndef MODULE
565 static int printed_version;
566 if (!printed_version) {
567 printed_version++;
568 printk(KERN_INFO "%s\n", version);
569 }
570 #endif
571
572 i = pci_enable_device(pdev);
573 if (i)
574 return i;
575
576 /* QUICC can only access first 256 MB of host RAM directly,
577 but PLX9060 DMA does 32-bits for actual packet data transfers */
578
579 /* FIXME when PCI/DMA subsystems are fixed.
580 We set both dma_mask and consistent_dma_mask to 28 bits
581 and pray pci_alloc_consistent() will use this info. It should
582 work on most platforms */
583 if (pci_set_consistent_dma_mask(pdev, DMA_28BIT_MASK) ||
584 pci_set_dma_mask(pdev, DMA_28BIT_MASK)) {
585 printk(KERN_ERR "wanXL: No usable DMA configuration\n");
586 return -EIO;
587 }
588
589 i = pci_request_regions(pdev, "wanXL");
590 if (i) {
591 pci_disable_device(pdev);
592 return i;
593 }
594
595 switch (pdev->device) {
596 case PCI_DEVICE_ID_SBE_WANXL100: ports = 1; break;
597 case PCI_DEVICE_ID_SBE_WANXL200: ports = 2; break;
598 default: ports = 4;
599 }
600
601 alloc_size = sizeof(card_t) + ports * sizeof(port_t);
602 card = kzalloc(alloc_size, GFP_KERNEL);
603 if (card == NULL) {
604 printk(KERN_ERR "wanXL %s: unable to allocate memory\n",
605 pci_name(pdev));
606 pci_release_regions(pdev);
607 pci_disable_device(pdev);
608 return -ENOBUFS;
609 }
610
611 pci_set_drvdata(pdev, card);
612 card->pdev = pdev;
613
614 card->status = pci_alloc_consistent(pdev, sizeof(card_status_t),
615 &card->status_address);
616 if (card->status == NULL) {
617 wanxl_pci_remove_one(pdev);
618 return -ENOBUFS;
619 }
620
621 #ifdef DEBUG_PCI
622 printk(KERN_DEBUG "wanXL %s: pci_alloc_consistent() returned memory"
623 " at 0x%LX\n", pci_name(pdev),
624 (unsigned long long)card->status_address);
625 #endif
626
627 /* FIXME when PCI/DMA subsystems are fixed.
628 We set both dma_mask and consistent_dma_mask back to 32 bits
629 to indicate the card can do 32-bit DMA addressing */
630 if (pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK) ||
631 pci_set_dma_mask(pdev, DMA_32BIT_MASK)) {
632 printk(KERN_ERR "wanXL: No usable DMA configuration\n");
633 wanxl_pci_remove_one(pdev);
634 return -EIO;
635 }
636
637 /* set up PLX mapping */
638 plx_phy = pci_resource_start(pdev, 0);
639
640 card->plx = ioremap_nocache(plx_phy, 0x70);
641 if (!card->plx) {
642 printk(KERN_ERR "wanxl: ioremap() failed\n");
643 wanxl_pci_remove_one(pdev);
644 return -EFAULT;
645 }
646
647 #if RESET_WHILE_LOADING
648 wanxl_reset(card);
649 #endif
650
651 timeout = jiffies + 20 * HZ;
652 while ((stat = readl(card->plx + PLX_MAILBOX_0)) != 0) {
653 if (time_before(timeout, jiffies)) {
654 printk(KERN_WARNING "wanXL %s: timeout waiting for"
655 " PUTS to complete\n", pci_name(pdev));
656 wanxl_pci_remove_one(pdev);
657 return -ENODEV;
658 }
659
660 switch(stat & 0xC0) {
661 case 0x00: /* hmm - PUTS completed with non-zero code? */
662 case 0x80: /* PUTS still testing the hardware */
663 break;
664
665 default:
666 printk(KERN_WARNING "wanXL %s: PUTS test 0x%X"
667 " failed\n", pci_name(pdev), stat & 0x30);
668 wanxl_pci_remove_one(pdev);
669 return -ENODEV;
670 }
671
672 schedule();
673 }
674
675 /* get on-board memory size (PUTS detects no more than 4 MB) */
676 ramsize = readl(card->plx + PLX_MAILBOX_2) & MBX2_MEMSZ_MASK;
677
678 /* set up on-board RAM mapping */
679 mem_phy = pci_resource_start(pdev, 2);
680
681
682 /* sanity check the board's reported memory size */
683 if (ramsize < BUFFERS_ADDR +
684 (TX_BUFFERS + RX_BUFFERS) * BUFFER_LENGTH * ports) {
685 printk(KERN_WARNING "wanXL %s: no enough on-board RAM"
686 " (%u bytes detected, %u bytes required)\n",
687 pci_name(pdev), ramsize, BUFFERS_ADDR +
688 (TX_BUFFERS + RX_BUFFERS) * BUFFER_LENGTH * ports);
689 wanxl_pci_remove_one(pdev);
690 return -ENODEV;
691 }
692
693 if (wanxl_puts_command(card, MBX1_CMD_BSWAP)) {
694 printk(KERN_WARNING "wanXL %s: unable to Set Byte Swap"
695 " Mode\n", pci_name(pdev));
696 wanxl_pci_remove_one(pdev);
697 return -ENODEV;
698 }
699
700 for (i = 0; i < RX_QUEUE_LENGTH; i++) {
701 struct sk_buff *skb = dev_alloc_skb(BUFFER_LENGTH);
702 card->rx_skbs[i] = skb;
703 if (skb)
704 card->status->rx_descs[i].address =
705 pci_map_single(card->pdev, skb->data,
706 BUFFER_LENGTH,
707 PCI_DMA_FROMDEVICE);
708 }
709
710 mem = ioremap_nocache(mem_phy, PDM_OFFSET + sizeof(firmware));
711 if (!mem) {
712 printk(KERN_ERR "wanxl: ioremap() failed\n");
713 wanxl_pci_remove_one(pdev);
714 return -EFAULT;
715 }
716
717 for (i = 0; i < sizeof(firmware); i += 4)
718 writel(ntohl(*(__be32*)(firmware + i)), mem + PDM_OFFSET + i);
719
720 for (i = 0; i < ports; i++)
721 writel(card->status_address +
722 (void *)&card->status->port_status[i] -
723 (void *)card->status, mem + PDM_OFFSET + 4 + i * 4);
724 writel(card->status_address, mem + PDM_OFFSET + 20);
725 writel(PDM_OFFSET, mem);
726 iounmap(mem);
727
728 writel(0, card->plx + PLX_MAILBOX_5);
729
730 if (wanxl_puts_command(card, MBX1_CMD_ABORTJ)) {
731 printk(KERN_WARNING "wanXL %s: unable to Abort and Jump\n",
732 pci_name(pdev));
733 wanxl_pci_remove_one(pdev);
734 return -ENODEV;
735 }
736
737 stat = 0;
738 timeout = jiffies + 5 * HZ;
739 do {
740 if ((stat = readl(card->plx + PLX_MAILBOX_5)) != 0)
741 break;
742 schedule();
743 }while (time_after(timeout, jiffies));
744
745 if (!stat) {
746 printk(KERN_WARNING "wanXL %s: timeout while initializing card "
747 "firmware\n", pci_name(pdev));
748 wanxl_pci_remove_one(pdev);
749 return -ENODEV;
750 }
751
752 #if DETECT_RAM
753 ramsize = stat;
754 #endif
755
756 printk(KERN_INFO "wanXL %s: at 0x%X, %u KB of RAM at 0x%X, irq %u\n",
757 pci_name(pdev), plx_phy, ramsize / 1024, mem_phy, pdev->irq);
758
759 /* Allocate IRQ */
760 if (request_irq(pdev->irq, wanxl_intr, IRQF_SHARED, "wanXL", card)) {
761 printk(KERN_WARNING "wanXL %s: could not allocate IRQ%i.\n",
762 pci_name(pdev), pdev->irq);
763 wanxl_pci_remove_one(pdev);
764 return -EBUSY;
765 }
766 card->irq = pdev->irq;
767
768 for (i = 0; i < ports; i++) {
769 hdlc_device *hdlc;
770 port_t *port = &card->ports[i];
771 struct net_device *dev = alloc_hdlcdev(port);
772 if (!dev) {
773 printk(KERN_ERR "wanXL %s: unable to allocate"
774 " memory\n", pci_name(pdev));
775 wanxl_pci_remove_one(pdev);
776 return -ENOMEM;
777 }
778
779 port->dev = dev;
780 hdlc = dev_to_hdlc(dev);
781 spin_lock_init(&port->lock);
782 dev->tx_queue_len = 50;
783 dev->do_ioctl = wanxl_ioctl;
784 dev->open = wanxl_open;
785 dev->stop = wanxl_close;
786 hdlc->attach = wanxl_attach;
787 hdlc->xmit = wanxl_xmit;
788 dev->get_stats = wanxl_get_stats;
789 port->card = card;
790 port->node = i;
791 get_status(port)->clocking = CLOCK_EXT;
792 if (register_hdlc_device(dev)) {
793 printk(KERN_ERR "wanXL %s: unable to register hdlc"
794 " device\n", pci_name(pdev));
795 free_netdev(dev);
796 wanxl_pci_remove_one(pdev);
797 return -ENOBUFS;
798 }
799 card->n_ports++;
800 }
801
802 printk(KERN_INFO "wanXL %s: port", pci_name(pdev));
803 for (i = 0; i < ports; i++)
804 printk("%s #%i: %s", i ? "," : "", i,
805 card->ports[i].dev->name);
806 printk("\n");
807
808 for (i = 0; i < ports; i++)
809 wanxl_cable_intr(&card->ports[i]); /* get carrier status etc.*/
810
811 return 0;
812 }
813
814 static struct pci_device_id wanxl_pci_tbl[] __devinitdata = {
815 { PCI_VENDOR_ID_SBE, PCI_DEVICE_ID_SBE_WANXL100, PCI_ANY_ID,
816 PCI_ANY_ID, 0, 0, 0 },
817 { PCI_VENDOR_ID_SBE, PCI_DEVICE_ID_SBE_WANXL200, PCI_ANY_ID,
818 PCI_ANY_ID, 0, 0, 0 },
819 { PCI_VENDOR_ID_SBE, PCI_DEVICE_ID_SBE_WANXL400, PCI_ANY_ID,
820 PCI_ANY_ID, 0, 0, 0 },
821 { 0, }
822 };
823
824
825 static struct pci_driver wanxl_pci_driver = {
826 .name = "wanXL",
827 .id_table = wanxl_pci_tbl,
828 .probe = wanxl_pci_init_one,
829 .remove = wanxl_pci_remove_one,
830 };
831
832
833 static int __init wanxl_init_module(void)
834 {
835 #ifdef MODULE
836 printk(KERN_INFO "%s\n", version);
837 #endif
838 return pci_register_driver(&wanxl_pci_driver);
839 }
840
841 static void __exit wanxl_cleanup_module(void)
842 {
843 pci_unregister_driver(&wanxl_pci_driver);
844 }
845
846
847 MODULE_AUTHOR("Krzysztof Halasa <khc@pm.waw.pl>");
848 MODULE_DESCRIPTION("SBE Inc. wanXL serial port driver");
849 MODULE_LICENSE("GPL v2");
850 MODULE_DEVICE_TABLE(pci, wanxl_pci_tbl);
851
852 module_init(wanxl_init_module);
853 module_exit(wanxl_cleanup_module);
WRT350N Kernel Patches