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jbd2: Annotate transaction start also for jbd2_journal_restart()
[linux/fpc-iii.git] / drivers / net / wan / wanxl.c
blobdaee8a0624eee14a0370ebeb20124e60a8373845
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 while (1) {
165 desc_t *desc = &get_status(port)->tx_descs[port->tx_in];
166 struct sk_buff *skb = port->tx_skbs[port->tx_in];
167
168 switch (desc->stat) {
169 case PACKET_FULL:
170 case PACKET_EMPTY:
171 netif_wake_queue(dev);
172 return;
173
174 case PACKET_UNDERRUN:
175 dev->stats.tx_errors++;
176 dev->stats.tx_fifo_errors++;
177 break;
178
179 default:
180 dev->stats.tx_packets++;
181 dev->stats.tx_bytes += skb->len;
182 }
183 desc->stat = PACKET_EMPTY; /* Free descriptor */
184 pci_unmap_single(port->card->pdev, desc->address, skb->len,
185 PCI_DMA_TODEVICE);
186 dev_kfree_skb_irq(skb);
187 port->tx_in = (port->tx_in + 1) % TX_BUFFERS;
188 }
189 }
190
191
192
193 /* Receive complete interrupt service */
194 static inline void wanxl_rx_intr(card_t *card)
195 {
196 desc_t *desc;
197 while (desc = &card->status->rx_descs[card->rx_in],
198 desc->stat != PACKET_EMPTY) {
199 if ((desc->stat & PACKET_PORT_MASK) > card->n_ports)
200 printk(KERN_CRIT "wanXL %s: received packet for"
201 " nonexistent port\n", pci_name(card->pdev));
202 else {
203 struct sk_buff *skb = card->rx_skbs[card->rx_in];
204 port_t *port = &card->ports[desc->stat &
205 PACKET_PORT_MASK];
206 struct net_device *dev = port->dev;
207
208 if (!skb)
209 dev->stats.rx_dropped++;
210 else {
211 pci_unmap_single(card->pdev, desc->address,
212 BUFFER_LENGTH,
213 PCI_DMA_FROMDEVICE);
214 skb_put(skb, desc->length);
215
216 #ifdef DEBUG_PKT
217 printk(KERN_DEBUG "%s RX(%i):", dev->name,
218 skb->len);
219 debug_frame(skb);
220 #endif
221 dev->stats.rx_packets++;
222 dev->stats.rx_bytes += skb->len;
223 skb->protocol = hdlc_type_trans(skb, dev);
224 netif_rx(skb);
225 skb = NULL;
226 }
227
228 if (!skb) {
229 skb = dev_alloc_skb(BUFFER_LENGTH);
230 desc->address = skb ?
231 pci_map_single(card->pdev, skb->data,
232 BUFFER_LENGTH,
233 PCI_DMA_FROMDEVICE) : 0;
234 card->rx_skbs[card->rx_in] = skb;
235 }
236 }
237 desc->stat = PACKET_EMPTY; /* Free descriptor */
238 card->rx_in = (card->rx_in + 1) % RX_QUEUE_LENGTH;
239 }
240 }
241
242
243
244 static irqreturn_t wanxl_intr(int irq, void* dev_id)
245 {
246 card_t *card = dev_id;
247 int i;
248 u32 stat;
249 int handled = 0;
250
251
252 while((stat = readl(card->plx + PLX_DOORBELL_FROM_CARD)) != 0) {
253 handled = 1;
254 writel(stat, card->plx + PLX_DOORBELL_FROM_CARD);
255
256 for (i = 0; i < card->n_ports; i++) {
257 if (stat & (1 << (DOORBELL_FROM_CARD_TX_0 + i)))
258 wanxl_tx_intr(&card->ports[i]);
259 if (stat & (1 << (DOORBELL_FROM_CARD_CABLE_0 + i)))
260 wanxl_cable_intr(&card->ports[i]);
261 }
262 if (stat & (1 << DOORBELL_FROM_CARD_RX))
263 wanxl_rx_intr(card);
264 }
265
266 return IRQ_RETVAL(handled);
267 }
268
269
270
271 static netdev_tx_t wanxl_xmit(struct sk_buff *skb, struct net_device *dev)
272 {
273 port_t *port = dev_to_port(dev);
274 desc_t *desc;
275
276 spin_lock(&port->lock);
277
278 desc = &get_status(port)->tx_descs[port->tx_out];
279 if (desc->stat != PACKET_EMPTY) {
280 /* should never happen - previous xmit should stop queue */
281 #ifdef DEBUG_PKT
282 printk(KERN_DEBUG "%s: transmitter buffer full\n", dev->name);
283 #endif
284 netif_stop_queue(dev);
285 spin_unlock_irq(&port->lock);
286 return NETDEV_TX_BUSY; /* request packet to be queued */
287 }
288
289 #ifdef DEBUG_PKT
290 printk(KERN_DEBUG "%s TX(%i):", dev->name, skb->len);
291 debug_frame(skb);
292 #endif
293
294 port->tx_skbs[port->tx_out] = skb;
295 desc->address = pci_map_single(port->card->pdev, skb->data, skb->len,
296 PCI_DMA_TODEVICE);
297 desc->length = skb->len;
298 desc->stat = PACKET_FULL;
299 writel(1 << (DOORBELL_TO_CARD_TX_0 + port->node),
300 port->card->plx + PLX_DOORBELL_TO_CARD);
301 dev->trans_start = jiffies;
302
303 port->tx_out = (port->tx_out + 1) % TX_BUFFERS;
304
305 if (get_status(port)->tx_descs[port->tx_out].stat != PACKET_EMPTY) {
306 netif_stop_queue(dev);
307 #ifdef DEBUG_PKT
308 printk(KERN_DEBUG "%s: transmitter buffer full\n", dev->name);
309 #endif
310 }
311
312 spin_unlock(&port->lock);
313 return NETDEV_TX_OK;
314 }
315
316
317
318 static int wanxl_attach(struct net_device *dev, unsigned short encoding,
319 unsigned short parity)
320 {
321 port_t *port = dev_to_port(dev);
322
323 if (encoding != ENCODING_NRZ &&
324 encoding != ENCODING_NRZI)
325 return -EINVAL;
326
327 if (parity != PARITY_NONE &&
328 parity != PARITY_CRC32_PR1_CCITT &&
329 parity != PARITY_CRC16_PR1_CCITT &&
330 parity != PARITY_CRC32_PR0_CCITT &&
331 parity != PARITY_CRC16_PR0_CCITT)
332 return -EINVAL;
333
334 get_status(port)->encoding = encoding;
335 get_status(port)->parity = parity;
336 return 0;
337 }
338
339
340
341 static int wanxl_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
342 {
343 const size_t size = sizeof(sync_serial_settings);
344 sync_serial_settings line;
345 port_t *port = dev_to_port(dev);
346
347 if (cmd != SIOCWANDEV)
348 return hdlc_ioctl(dev, ifr, cmd);
349
350 switch (ifr->ifr_settings.type) {
351 case IF_GET_IFACE:
352 ifr->ifr_settings.type = IF_IFACE_SYNC_SERIAL;
353 if (ifr->ifr_settings.size < size) {
354 ifr->ifr_settings.size = size; /* data size wanted */
355 return -ENOBUFS;
356 }
357 line.clock_type = get_status(port)->clocking;
358 line.clock_rate = 0;
359 line.loopback = 0;
360
361 if (copy_to_user(ifr->ifr_settings.ifs_ifsu.sync, &line, size))
362 return -EFAULT;
363 return 0;
364
365 case IF_IFACE_SYNC_SERIAL:
366 if (!capable(CAP_NET_ADMIN))
367 return -EPERM;
368 if (dev->flags & IFF_UP)
369 return -EBUSY;
370
371 if (copy_from_user(&line, ifr->ifr_settings.ifs_ifsu.sync,
372 size))
373 return -EFAULT;
374
375 if (line.clock_type != CLOCK_EXT &&
376 line.clock_type != CLOCK_TXFROMRX)
377 return -EINVAL; /* No such clock setting */
378
379 if (line.loopback != 0)
380 return -EINVAL;
381
382 get_status(port)->clocking = line.clock_type;
383 return 0;
384
385 default:
386 return hdlc_ioctl(dev, ifr, cmd);
387 }
388 }
389
390
391
392 static int wanxl_open(struct net_device *dev)
393 {
394 port_t *port = dev_to_port(dev);
395 u8 __iomem *dbr = port->card->plx + PLX_DOORBELL_TO_CARD;
396 unsigned long timeout;
397 int i;
398
399 if (get_status(port)->open) {
400 printk(KERN_ERR "%s: port already open\n", dev->name);
401 return -EIO;
402 }
403 if ((i = hdlc_open(dev)) != 0)
404 return i;
405
406 port->tx_in = port->tx_out = 0;
407 for (i = 0; i < TX_BUFFERS; i++)
408 get_status(port)->tx_descs[i].stat = PACKET_EMPTY;
409 /* signal the card */
410 writel(1 << (DOORBELL_TO_CARD_OPEN_0 + port->node), dbr);
411
412 timeout = jiffies + HZ;
413 do {
414 if (get_status(port)->open) {
415 netif_start_queue(dev);
416 return 0;
417 }
418 } while (time_after(timeout, jiffies));
419
420 printk(KERN_ERR "%s: unable to open port\n", dev->name);
421 /* ask the card to close the port, should it be still alive */
422 writel(1 << (DOORBELL_TO_CARD_CLOSE_0 + port->node), dbr);
423 return -EFAULT;
424 }
425
426
427
428 static int wanxl_close(struct net_device *dev)
429 {
430 port_t *port = dev_to_port(dev);
431 unsigned long timeout;
432 int i;
433
434 hdlc_close(dev);
435 /* signal the card */
436 writel(1 << (DOORBELL_TO_CARD_CLOSE_0 + port->node),
437 port->card->plx + PLX_DOORBELL_TO_CARD);
438
439 timeout = jiffies + HZ;
440 do {
441 if (!get_status(port)->open)
442 break;
443 } while (time_after(timeout, jiffies));
444
445 if (get_status(port)->open)
446 printk(KERN_ERR "%s: unable to close port\n", dev->name);
447
448 netif_stop_queue(dev);
449
450 for (i = 0; i < TX_BUFFERS; i++) {
451 desc_t *desc = &get_status(port)->tx_descs[i];
452
453 if (desc->stat != PACKET_EMPTY) {
454 desc->stat = PACKET_EMPTY;
455 pci_unmap_single(port->card->pdev, desc->address,
456 port->tx_skbs[i]->len,
457 PCI_DMA_TODEVICE);
458 dev_kfree_skb(port->tx_skbs[i]);
459 }
460 }
461 return 0;
462 }
463
464
465
466 static struct net_device_stats *wanxl_get_stats(struct net_device *dev)
467 {
468 port_t *port = dev_to_port(dev);
469
470 dev->stats.rx_over_errors = get_status(port)->rx_overruns;
471 dev->stats.rx_frame_errors = get_status(port)->rx_frame_errors;
472 dev->stats.rx_errors = dev->stats.rx_over_errors +
473 dev->stats.rx_frame_errors;
474 return &dev->stats;
475 }
476
477
478
479 static int wanxl_puts_command(card_t *card, u32 cmd)
480 {
481 unsigned long timeout = jiffies + 5 * HZ;
482
483 writel(cmd, card->plx + PLX_MAILBOX_1);
484 do {
485 if (readl(card->plx + PLX_MAILBOX_1) == 0)
486 return 0;
487
488 schedule();
489 }while (time_after(timeout, jiffies));
490
491 return -1;
492 }
493
494
495
496 static void wanxl_reset(card_t *card)
497 {
498 u32 old_value = readl(card->plx + PLX_CONTROL) & ~PLX_CTL_RESET;
499
500 writel(0x80, card->plx + PLX_MAILBOX_0);
501 writel(old_value | PLX_CTL_RESET, card->plx + PLX_CONTROL);
502 readl(card->plx + PLX_CONTROL); /* wait for posted write */
503 udelay(1);
504 writel(old_value, card->plx + PLX_CONTROL);
505 readl(card->plx + PLX_CONTROL); /* wait for posted write */
506 }
507
508
509
510 static void wanxl_pci_remove_one(struct pci_dev *pdev)
511 {
512 card_t *card = pci_get_drvdata(pdev);
513 int i;
514
515 for (i = 0; i < card->n_ports; i++) {
516 unregister_hdlc_device(card->ports[i].dev);
517 free_netdev(card->ports[i].dev);
518 }
519
520 /* unregister and free all host resources */
521 if (card->irq)
522 free_irq(card->irq, card);
523
524 wanxl_reset(card);
525
526 for (i = 0; i < RX_QUEUE_LENGTH; i++)
527 if (card->rx_skbs[i]) {
528 pci_unmap_single(card->pdev,
529 card->status->rx_descs[i].address,
530 BUFFER_LENGTH, PCI_DMA_FROMDEVICE);
531 dev_kfree_skb(card->rx_skbs[i]);
532 }
533
534 if (card->plx)
535 iounmap(card->plx);
536
537 if (card->status)
538 pci_free_consistent(pdev, sizeof(card_status_t),
539 card->status, card->status_address);
540
541 pci_release_regions(pdev);
542 pci_disable_device(pdev);
543 pci_set_drvdata(pdev, NULL);
544 kfree(card);
545 }
546
547
548 #include "wanxlfw.inc"
549
550 static const struct net_device_ops wanxl_ops = {
551 .ndo_open = wanxl_open,
552 .ndo_stop = wanxl_close,
553 .ndo_change_mtu = hdlc_change_mtu,
554 .ndo_start_xmit = hdlc_start_xmit,
555 .ndo_do_ioctl = wanxl_ioctl,
556 .ndo_get_stats = wanxl_get_stats,
557 };
558
559 static int __devinit wanxl_pci_init_one(struct pci_dev *pdev,
560 const struct pci_device_id *ent)
561 {
562 card_t *card;
563 u32 ramsize, stat;
564 unsigned long timeout;
565 u32 plx_phy; /* PLX PCI base address */
566 u32 mem_phy; /* memory PCI base addr */
567 u8 __iomem *mem; /* memory virtual base addr */
568 int i, ports, alloc_size;
569
570 #ifndef MODULE
571 static int printed_version;
572 if (!printed_version) {
573 printed_version++;
574 printk(KERN_INFO "%s\n", version);
575 }
576 #endif
577
578 i = pci_enable_device(pdev);
579 if (i)
580 return i;
581
582 /* QUICC can only access first 256 MB of host RAM directly,
583 but PLX9060 DMA does 32-bits for actual packet data transfers */
584
585 /* FIXME when PCI/DMA subsystems are fixed.
586 We set both dma_mask and consistent_dma_mask to 28 bits
587 and pray pci_alloc_consistent() will use this info. It should
588 work on most platforms */
589 if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(28)) ||
590 pci_set_dma_mask(pdev, DMA_BIT_MASK(28))) {
591 printk(KERN_ERR "wanXL: No usable DMA configuration\n");
592 return -EIO;
593 }
594
595 i = pci_request_regions(pdev, "wanXL");
596 if (i) {
597 pci_disable_device(pdev);
598 return i;
599 }
600
601 switch (pdev->device) {
602 case PCI_DEVICE_ID_SBE_WANXL100: ports = 1; break;
603 case PCI_DEVICE_ID_SBE_WANXL200: ports = 2; break;
604 default: ports = 4;
605 }
606
607 alloc_size = sizeof(card_t) + ports * sizeof(port_t);
608 card = kzalloc(alloc_size, GFP_KERNEL);
609 if (card == NULL) {
610 printk(KERN_ERR "wanXL %s: unable to allocate memory\n",
611 pci_name(pdev));
612 pci_release_regions(pdev);
613 pci_disable_device(pdev);
614 return -ENOBUFS;
615 }
616
617 pci_set_drvdata(pdev, card);
618 card->pdev = pdev;
619
620 card->status = pci_alloc_consistent(pdev, sizeof(card_status_t),
621 &card->status_address);
622 if (card->status == NULL) {
623 wanxl_pci_remove_one(pdev);
624 return -ENOBUFS;
625 }
626
627 #ifdef DEBUG_PCI
628 printk(KERN_DEBUG "wanXL %s: pci_alloc_consistent() returned memory"
629 " at 0x%LX\n", pci_name(pdev),
630 (unsigned long long)card->status_address);
631 #endif
632
633 /* FIXME when PCI/DMA subsystems are fixed.
634 We set both dma_mask and consistent_dma_mask back to 32 bits
635 to indicate the card can do 32-bit DMA addressing */
636 if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)) ||
637 pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
638 printk(KERN_ERR "wanXL: No usable DMA configuration\n");
639 wanxl_pci_remove_one(pdev);
640 return -EIO;
641 }
642
643 /* set up PLX mapping */
644 plx_phy = pci_resource_start(pdev, 0);
645
646 card->plx = ioremap_nocache(plx_phy, 0x70);
647 if (!card->plx) {
648 printk(KERN_ERR "wanxl: ioremap() failed\n");
649 wanxl_pci_remove_one(pdev);
650 return -EFAULT;
651 }
652
653 #if RESET_WHILE_LOADING
654 wanxl_reset(card);
655 #endif
656
657 timeout = jiffies + 20 * HZ;
658 while ((stat = readl(card->plx + PLX_MAILBOX_0)) != 0) {
659 if (time_before(timeout, jiffies)) {
660 printk(KERN_WARNING "wanXL %s: timeout waiting for"
661 " PUTS to complete\n", pci_name(pdev));
662 wanxl_pci_remove_one(pdev);
663 return -ENODEV;
664 }
665
666 switch(stat & 0xC0) {
667 case 0x00: /* hmm - PUTS completed with non-zero code? */
668 case 0x80: /* PUTS still testing the hardware */
669 break;
670
671 default:
672 printk(KERN_WARNING "wanXL %s: PUTS test 0x%X"
673 " failed\n", pci_name(pdev), stat & 0x30);
674 wanxl_pci_remove_one(pdev);
675 return -ENODEV;
676 }
677
678 schedule();
679 }
680
681 /* get on-board memory size (PUTS detects no more than 4 MB) */
682 ramsize = readl(card->plx + PLX_MAILBOX_2) & MBX2_MEMSZ_MASK;
683
684 /* set up on-board RAM mapping */
685 mem_phy = pci_resource_start(pdev, 2);
686
687
688 /* sanity check the board's reported memory size */
689 if (ramsize < BUFFERS_ADDR +
690 (TX_BUFFERS + RX_BUFFERS) * BUFFER_LENGTH * ports) {
691 printk(KERN_WARNING "wanXL %s: no enough on-board RAM"
692 " (%u bytes detected, %u bytes required)\n",
693 pci_name(pdev), ramsize, BUFFERS_ADDR +
694 (TX_BUFFERS + RX_BUFFERS) * BUFFER_LENGTH * ports);
695 wanxl_pci_remove_one(pdev);
696 return -ENODEV;
697 }
698
699 if (wanxl_puts_command(card, MBX1_CMD_BSWAP)) {
700 printk(KERN_WARNING "wanXL %s: unable to Set Byte Swap"
701 " Mode\n", pci_name(pdev));
702 wanxl_pci_remove_one(pdev);
703 return -ENODEV;
704 }
705
706 for (i = 0; i < RX_QUEUE_LENGTH; i++) {
707 struct sk_buff *skb = dev_alloc_skb(BUFFER_LENGTH);
708 card->rx_skbs[i] = skb;
709 if (skb)
710 card->status->rx_descs[i].address =
711 pci_map_single(card->pdev, skb->data,
712 BUFFER_LENGTH,
713 PCI_DMA_FROMDEVICE);
714 }
715
716 mem = ioremap_nocache(mem_phy, PDM_OFFSET + sizeof(firmware));
717 if (!mem) {
718 printk(KERN_ERR "wanxl: ioremap() failed\n");
719 wanxl_pci_remove_one(pdev);
720 return -EFAULT;
721 }
722
723 for (i = 0; i < sizeof(firmware); i += 4)
724 writel(ntohl(*(__be32*)(firmware + i)), mem + PDM_OFFSET + i);
725
726 for (i = 0; i < ports; i++)
727 writel(card->status_address +
728 (void *)&card->status->port_status[i] -
729 (void *)card->status, mem + PDM_OFFSET + 4 + i * 4);
730 writel(card->status_address, mem + PDM_OFFSET + 20);
731 writel(PDM_OFFSET, mem);
732 iounmap(mem);
733
734 writel(0, card->plx + PLX_MAILBOX_5);
735
736 if (wanxl_puts_command(card, MBX1_CMD_ABORTJ)) {
737 printk(KERN_WARNING "wanXL %s: unable to Abort and Jump\n",
738 pci_name(pdev));
739 wanxl_pci_remove_one(pdev);
740 return -ENODEV;
741 }
742
743 stat = 0;
744 timeout = jiffies + 5 * HZ;
745 do {
746 if ((stat = readl(card->plx + PLX_MAILBOX_5)) != 0)
747 break;
748 schedule();
749 }while (time_after(timeout, jiffies));
750
751 if (!stat) {
752 printk(KERN_WARNING "wanXL %s: timeout while initializing card "
753 "firmware\n", pci_name(pdev));
754 wanxl_pci_remove_one(pdev);
755 return -ENODEV;
756 }
757
758 #if DETECT_RAM
759 ramsize = stat;
760 #endif
761
762 printk(KERN_INFO "wanXL %s: at 0x%X, %u KB of RAM at 0x%X, irq %u\n",
763 pci_name(pdev), plx_phy, ramsize / 1024, mem_phy, pdev->irq);
764
765 /* Allocate IRQ */
766 if (request_irq(pdev->irq, wanxl_intr, IRQF_SHARED, "wanXL", card)) {
767 printk(KERN_WARNING "wanXL %s: could not allocate IRQ%i.\n",
768 pci_name(pdev), pdev->irq);
769 wanxl_pci_remove_one(pdev);
770 return -EBUSY;
771 }
772 card->irq = pdev->irq;
773
774 for (i = 0; i < ports; i++) {
775 hdlc_device *hdlc;
776 port_t *port = &card->ports[i];
777 struct net_device *dev = alloc_hdlcdev(port);
778 if (!dev) {
779 printk(KERN_ERR "wanXL %s: unable to allocate"
780 " memory\n", pci_name(pdev));
781 wanxl_pci_remove_one(pdev);
782 return -ENOMEM;
783 }
784
785 port->dev = dev;
786 hdlc = dev_to_hdlc(dev);
787 spin_lock_init(&port->lock);
788 dev->tx_queue_len = 50;
789 dev->netdev_ops = &wanxl_ops;
790 hdlc->attach = wanxl_attach;
791 hdlc->xmit = wanxl_xmit;
792 port->card = card;
793 port->node = i;
794 get_status(port)->clocking = CLOCK_EXT;
795 if (register_hdlc_device(dev)) {
796 printk(KERN_ERR "wanXL %s: unable to register hdlc"
797 " device\n", pci_name(pdev));
798 free_netdev(dev);
799 wanxl_pci_remove_one(pdev);
800 return -ENOBUFS;
801 }
802 card->n_ports++;
803 }
804
805 printk(KERN_INFO "wanXL %s: port", pci_name(pdev));
806 for (i = 0; i < ports; i++)
807 printk("%s #%i: %s", i ? "," : "", i,
808 card->ports[i].dev->name);
809 printk("\n");
810
811 for (i = 0; i < ports; i++)
812 wanxl_cable_intr(&card->ports[i]); /* get carrier status etc.*/
813
814 return 0;
815 }
816
817 static struct pci_device_id wanxl_pci_tbl[] __devinitdata = {
818 { PCI_VENDOR_ID_SBE, PCI_DEVICE_ID_SBE_WANXL100, PCI_ANY_ID,
819 PCI_ANY_ID, 0, 0, 0 },
820 { PCI_VENDOR_ID_SBE, PCI_DEVICE_ID_SBE_WANXL200, PCI_ANY_ID,
821 PCI_ANY_ID, 0, 0, 0 },
822 { PCI_VENDOR_ID_SBE, PCI_DEVICE_ID_SBE_WANXL400, PCI_ANY_ID,
823 PCI_ANY_ID, 0, 0, 0 },
824 { 0, }
825 };
826
827
828 static struct pci_driver wanxl_pci_driver = {
829 .name = "wanXL",
830 .id_table = wanxl_pci_tbl,
831 .probe = wanxl_pci_init_one,
832 .remove = wanxl_pci_remove_one,
833 };
834
835
836 static int __init wanxl_init_module(void)
837 {
838 #ifdef MODULE
839 printk(KERN_INFO "%s\n", version);
840 #endif
841 return pci_register_driver(&wanxl_pci_driver);
842 }
843
844 static void __exit wanxl_cleanup_module(void)
845 {
846 pci_unregister_driver(&wanxl_pci_driver);
847 }
848
849
850 MODULE_AUTHOR("Krzysztof Halasa <khc@pm.waw.pl>");
851 MODULE_DESCRIPTION("SBE Inc. wanXL serial port driver");
852 MODULE_LICENSE("GPL v2");
853 MODULE_DEVICE_TABLE(pci, wanxl_pci_tbl);
854
855 module_init(wanxl_init_module);
856 module_exit(wanxl_cleanup_module);
Linux with added FPC-III support