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15#include <linux/init.h>
16#include <linux/usb.h>
17#include <linux/pci.h>
18#include <linux/slab.h>
19#include <linux/firmware.h>
20#include <linux/etherdevice.h>
21#include <linux/delay.h>
22#include <linux/crc32.h>
23#include <net/mac80211.h>
24
25#include "p54.h"
26#include "lmac.h"
27#include "p54usb.h"
28
29MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
30MODULE_DESCRIPTION("Prism54 USB wireless driver");
31MODULE_LICENSE("GPL");
32MODULE_ALIAS("prism54usb");
33MODULE_FIRMWARE("isl3886usb");
34MODULE_FIRMWARE("isl3887usb");
35
36static struct usb_device_id p54u_table[] __devinitdata = {
37
38 {USB_DEVICE(0x0506, 0x0a11)},
39 {USB_DEVICE(0x06b9, 0x0120)},
40 {USB_DEVICE(0x0707, 0xee06)},
41 {USB_DEVICE(0x07aa, 0x001c)},
42 {USB_DEVICE(0x083a, 0x4501)},
43 {USB_DEVICE(0x083a, 0x4502)},
44 {USB_DEVICE(0x083a, 0x5501)},
45 {USB_DEVICE(0x0846, 0x4200)},
46 {USB_DEVICE(0x0846, 0x4210)},
47 {USB_DEVICE(0x0846, 0x4220)},
48 {USB_DEVICE(0x09aa, 0x1000)},
49 {USB_DEVICE(0x0cde, 0x0006)},
50 {USB_DEVICE(0x124a, 0x4023)},
51 {USB_DEVICE(0x1915, 0x2234)},
52 {USB_DEVICE(0x1915, 0x2235)},
53 {USB_DEVICE(0x2001, 0x3701)},
54 {USB_DEVICE(0x2001, 0x3703)},
55 {USB_DEVICE(0x5041, 0x2234)},
56 {USB_DEVICE(0x5041, 0x2235)},
57
58
59 {USB_DEVICE(0x0471, 0x1230)},
60 {USB_DEVICE(0x050d, 0x7050)},
61 {USB_DEVICE(0x0572, 0x2000)},
62 {USB_DEVICE(0x0572, 0x2002)},
63 {USB_DEVICE(0x06b9, 0x0121)},
64 {USB_DEVICE(0x0707, 0xee13)},
65 {USB_DEVICE(0x083a, 0x4521)},
66 {USB_DEVICE(0x083a, 0xf503)},
67 {USB_DEVICE(0x0846, 0x4240)},
68 {USB_DEVICE(0x0915, 0x2000)},
69 {USB_DEVICE(0x0915, 0x2002)},
70 {USB_DEVICE(0x0baf, 0x0118)},
71 {USB_DEVICE(0x0bf8, 0x1009)},
72 {USB_DEVICE(0x0cde, 0x0006)},
73 {USB_DEVICE(0x0cde, 0x0008)},
74 {USB_DEVICE(0x0cde, 0x0015)},
75 {USB_DEVICE(0x0d8e, 0x3762)},
76 {USB_DEVICE(0x124a, 0x4025)},
77 {USB_DEVICE(0x1260, 0xee22)},
78 {USB_DEVICE(0x13b1, 0x000a)},
79 {USB_DEVICE(0x13B1, 0x000C)},
80 {USB_DEVICE(0x1413, 0x5400)},
81 {USB_DEVICE(0x1435, 0x0427)},
82 {USB_DEVICE(0x2001, 0x3704)},
83 {USB_DEVICE(0x413c, 0x5513)},
84 {USB_DEVICE(0x413c, 0x8102)},
85 {USB_DEVICE(0x413c, 0x8104)},
86 {}
87};
88
89MODULE_DEVICE_TABLE(usb, p54u_table);
90
91static const struct {
92 u32 intf;
93 enum p54u_hw_type type;
94 const char *fw;
95 const char *fw_legacy;
96 char hw[20];
97} p54u_fwlist[__NUM_P54U_HWTYPES] = {
98 {
99 .type = P54U_NET2280,
100 .intf = FW_LM86,
101 .fw = "isl3886usb",
102 .fw_legacy = "isl3890usb",
103 .hw = "ISL3886 + net2280",
104 },
105 {
106 .type = P54U_3887,
107 .intf = FW_LM87,
108 .fw = "isl3887usb",
109 .fw_legacy = "isl3887usb_bare",
110 .hw = "ISL3887",
111 },
112};
113
114static void p54u_rx_cb(struct urb *urb)
115{
116 struct sk_buff *skb = (struct sk_buff *) urb->context;
117 struct p54u_rx_info *info = (struct p54u_rx_info *)skb->cb;
118 struct ieee80211_hw *dev = info->dev;
119 struct p54u_priv *priv = dev->priv;
120
121 skb_unlink(skb, &priv->rx_queue);
122
123 if (unlikely(urb->status)) {
124 dev_kfree_skb_irq(skb);
125 return;
126 }
127
128 skb_put(skb, urb->actual_length);
129
130 if (priv->hw_type == P54U_NET2280)
131 skb_pull(skb, priv->common.tx_hdr_len);
132 if (priv->common.fw_interface == FW_LM87) {
133 skb_pull(skb, 4);
134 skb_put(skb, 4);
135 }
136
137 if (p54_rx(dev, skb)) {
138 skb = dev_alloc_skb(priv->common.rx_mtu + 32);
139 if (unlikely(!skb)) {
140
141 return;
142 }
143
144 info = (struct p54u_rx_info *) skb->cb;
145 info->urb = urb;
146 info->dev = dev;
147 urb->transfer_buffer = skb_tail_pointer(skb);
148 urb->context = skb;
149 } else {
150 if (priv->hw_type == P54U_NET2280)
151 skb_push(skb, priv->common.tx_hdr_len);
152 if (priv->common.fw_interface == FW_LM87) {
153 skb_push(skb, 4);
154 skb_put(skb, 4);
155 }
156 skb_reset_tail_pointer(skb);
157 skb_trim(skb, 0);
158 urb->transfer_buffer = skb_tail_pointer(skb);
159 }
160 skb_queue_tail(&priv->rx_queue, skb);
161 usb_anchor_urb(urb, &priv->submitted);
162 if (usb_submit_urb(urb, GFP_ATOMIC)) {
163 skb_unlink(skb, &priv->rx_queue);
164 usb_unanchor_urb(urb);
165 dev_kfree_skb_irq(skb);
166 }
167}
168
169static void p54u_tx_cb(struct urb *urb)
170{
171 struct sk_buff *skb = urb->context;
172 struct ieee80211_hw *dev = (struct ieee80211_hw *)
173 usb_get_intfdata(usb_ifnum_to_if(urb->dev, 0));
174
175 p54_free_skb(dev, skb);
176}
177
178static void p54u_tx_dummy_cb(struct urb *urb) { }
179
180static void p54u_free_urbs(struct ieee80211_hw *dev)
181{
182 struct p54u_priv *priv = dev->priv;
183 usb_kill_anchored_urbs(&priv->submitted);
184}
185
186static int p54u_init_urbs(struct ieee80211_hw *dev)
187{
188 struct p54u_priv *priv = dev->priv;
189 struct urb *entry = NULL;
190 struct sk_buff *skb;
191 struct p54u_rx_info *info;
192 int ret = 0;
193
194 while (skb_queue_len(&priv->rx_queue) < 32) {
195 skb = __dev_alloc_skb(priv->common.rx_mtu + 32, GFP_KERNEL);
196 if (!skb) {
197 ret = -ENOMEM;
198 goto err;
199 }
200 entry = usb_alloc_urb(0, GFP_KERNEL);
201 if (!entry) {
202 ret = -ENOMEM;
203 goto err;
204 }
205
206 usb_fill_bulk_urb(entry, priv->udev,
207 usb_rcvbulkpipe(priv->udev, P54U_PIPE_DATA),
208 skb_tail_pointer(skb),
209 priv->common.rx_mtu + 32, p54u_rx_cb, skb);
210 info = (struct p54u_rx_info *) skb->cb;
211 info->urb = entry;
212 info->dev = dev;
213 skb_queue_tail(&priv->rx_queue, skb);
214
215 usb_anchor_urb(entry, &priv->submitted);
216 ret = usb_submit_urb(entry, GFP_KERNEL);
217 if (ret) {
218 skb_unlink(skb, &priv->rx_queue);
219 usb_unanchor_urb(entry);
220 goto err;
221 }
222 usb_free_urb(entry);
223 entry = NULL;
224 }
225
226 return 0;
227
228 err:
229 usb_free_urb(entry);
230 kfree_skb(skb);
231 p54u_free_urbs(dev);
232 return ret;
233}
234
235static __le32 p54u_lm87_chksum(const __le32 *data, size_t length)
236{
237 u32 chk = 0;
238
239 length >>= 2;
240 while (length--) {
241 chk ^= le32_to_cpu(*data++);
242 chk = (chk >> 5) ^ (chk << 3);
243 }
244
245 return cpu_to_le32(chk);
246}
247
248static void p54u_tx_lm87(struct ieee80211_hw *dev, struct sk_buff *skb)
249{
250 struct p54u_priv *priv = dev->priv;
251 struct urb *data_urb;
252 struct lm87_tx_hdr *hdr = (void *)skb->data - sizeof(*hdr);
253
254 data_urb = usb_alloc_urb(0, GFP_ATOMIC);
255 if (!data_urb) {
256 p54_free_skb(dev, skb);
257 return;
258 }
259
260 hdr->chksum = p54u_lm87_chksum((__le32 *)skb->data, skb->len);
261 hdr->device_addr = ((struct p54_hdr *)skb->data)->req_id;
262
263 usb_fill_bulk_urb(data_urb, priv->udev,
264 usb_sndbulkpipe(priv->udev, P54U_PIPE_DATA),
265 hdr, skb->len + sizeof(*hdr), FREE_AFTER_TX(skb) ?
266 p54u_tx_cb : p54u_tx_dummy_cb, skb);
267 data_urb->transfer_flags |= URB_ZERO_PACKET;
268
269 usb_anchor_urb(data_urb, &priv->submitted);
270 if (usb_submit_urb(data_urb, GFP_ATOMIC)) {
271 usb_unanchor_urb(data_urb);
272 p54_free_skb(dev, skb);
273 }
274 usb_free_urb(data_urb);
275}
276
277static void p54u_tx_net2280(struct ieee80211_hw *dev, struct sk_buff *skb)
278{
279 struct p54u_priv *priv = dev->priv;
280 struct urb *int_urb = NULL, *data_urb = NULL;
281 struct net2280_tx_hdr *hdr = (void *)skb->data - sizeof(*hdr);
282 struct net2280_reg_write *reg = NULL;
283 int err = -ENOMEM;
284
285 reg = kmalloc(sizeof(*reg), GFP_ATOMIC);
286 if (!reg)
287 goto out;
288
289 int_urb = usb_alloc_urb(0, GFP_ATOMIC);
290 if (!int_urb)
291 goto out;
292
293 data_urb = usb_alloc_urb(0, GFP_ATOMIC);
294 if (!data_urb)
295 goto out;
296
297 reg->port = cpu_to_le16(NET2280_DEV_U32);
298 reg->addr = cpu_to_le32(P54U_DEV_BASE);
299 reg->val = cpu_to_le32(ISL38XX_DEV_INT_DATA);
300
301 memset(hdr, 0, sizeof(*hdr));
302 hdr->len = cpu_to_le16(skb->len);
303 hdr->device_addr = ((struct p54_hdr *) skb->data)->req_id;
304
305 usb_fill_bulk_urb(int_urb, priv->udev,
306 usb_sndbulkpipe(priv->udev, P54U_PIPE_DEV), reg, sizeof(*reg),
307 p54u_tx_dummy_cb, dev);
308
309
310
311
312
313
314 int_urb->transfer_flags |= URB_FREE_BUFFER | URB_ZERO_PACKET;
315 reg = NULL;
316
317 usb_fill_bulk_urb(data_urb, priv->udev,
318 usb_sndbulkpipe(priv->udev, P54U_PIPE_DATA),
319 hdr, skb->len + sizeof(*hdr), FREE_AFTER_TX(skb) ?
320 p54u_tx_cb : p54u_tx_dummy_cb, skb);
321 data_urb->transfer_flags |= URB_ZERO_PACKET;
322
323 usb_anchor_urb(int_urb, &priv->submitted);
324 err = usb_submit_urb(int_urb, GFP_ATOMIC);
325 if (err) {
326 usb_unanchor_urb(int_urb);
327 goto out;
328 }
329
330 usb_anchor_urb(data_urb, &priv->submitted);
331 err = usb_submit_urb(data_urb, GFP_ATOMIC);
332 if (err) {
333 usb_unanchor_urb(data_urb);
334 goto out;
335 }
336out:
337 usb_free_urb(int_urb);
338 usb_free_urb(data_urb);
339
340 if (err) {
341 kfree(reg);
342 p54_free_skb(dev, skb);
343 }
344}
345
346static int p54u_write(struct p54u_priv *priv,
347 struct net2280_reg_write *buf,
348 enum net2280_op_type type,
349 __le32 addr, __le32 val)
350{
351 unsigned int ep;
352 int alen;
353
354 if (type & 0x0800)
355 ep = usb_sndbulkpipe(priv->udev, P54U_PIPE_DEV);
356 else
357 ep = usb_sndbulkpipe(priv->udev, P54U_PIPE_BRG);
358
359 buf->port = cpu_to_le16(type);
360 buf->addr = addr;
361 buf->val = val;
362
363 return usb_bulk_msg(priv->udev, ep, buf, sizeof(*buf), &alen, 1000);
364}
365
366static int p54u_read(struct p54u_priv *priv, void *buf,
367 enum net2280_op_type type,
368 __le32 addr, __le32 *val)
369{
370 struct net2280_reg_read *read = buf;
371 __le32 *reg = buf;
372 unsigned int ep;
373 int alen, err;
374
375 if (type & 0x0800)
376 ep = P54U_PIPE_DEV;
377 else
378 ep = P54U_PIPE_BRG;
379
380 read->port = cpu_to_le16(type);
381 read->addr = addr;
382
383 err = usb_bulk_msg(priv->udev, usb_sndbulkpipe(priv->udev, ep),
384 read, sizeof(*read), &alen, 1000);
385 if (err)
386 return err;
387
388 err = usb_bulk_msg(priv->udev, usb_rcvbulkpipe(priv->udev, ep),
389 reg, sizeof(*reg), &alen, 1000);
390 if (err)
391 return err;
392
393 *val = *reg;
394 return 0;
395}
396
397static int p54u_bulk_msg(struct p54u_priv *priv, unsigned int ep,
398 void *data, size_t len)
399{
400 int alen;
401 return usb_bulk_msg(priv->udev, usb_sndbulkpipe(priv->udev, ep),
402 data, len, &alen, 2000);
403}
404
405static int p54u_device_reset(struct ieee80211_hw *dev)
406{
407 struct p54u_priv *priv = dev->priv;
408 int ret, lock = (priv->intf->condition != USB_INTERFACE_BINDING);
409
410 if (lock) {
411 ret = usb_lock_device_for_reset(priv->udev, priv->intf);
412 if (ret < 0) {
413 dev_err(&priv->udev->dev, "(p54usb) unable to lock "
414 "device for reset (%d)!\n", ret);
415 return ret;
416 }
417 }
418
419 ret = usb_reset_device(priv->udev);
420 if (lock)
421 usb_unlock_device(priv->udev);
422
423 if (ret)
424 dev_err(&priv->udev->dev, "(p54usb) unable to reset "
425 "device (%d)!\n", ret);
426
427 return ret;
428}
429
430static const char p54u_romboot_3887[] = "~~~~";
431static int p54u_firmware_reset_3887(struct ieee80211_hw *dev)
432{
433 struct p54u_priv *priv = dev->priv;
434 u8 *buf;
435 int ret;
436
437 buf = kmalloc(4, GFP_KERNEL);
438 if (!buf)
439 return -ENOMEM;
440 memcpy(buf, p54u_romboot_3887, 4);
441 ret = p54u_bulk_msg(priv, P54U_PIPE_DATA,
442 buf, 4);
443 kfree(buf);
444 if (ret)
445 dev_err(&priv->udev->dev, "(p54usb) unable to jump to "
446 "boot ROM (%d)!\n", ret);
447
448 return ret;
449}
450
451static const char p54u_firmware_upload_3887[] = "<\r";
452static int p54u_upload_firmware_3887(struct ieee80211_hw *dev)
453{
454 struct p54u_priv *priv = dev->priv;
455 int err, alen;
456 u8 carry = 0;
457 u8 *buf, *tmp;
458 const u8 *data;
459 unsigned int left, remains, block_size;
460 struct x2_header *hdr;
461 unsigned long timeout;
462
463 err = p54u_firmware_reset_3887(dev);
464 if (err)
465 return err;
466
467 tmp = buf = kmalloc(P54U_FW_BLOCK, GFP_KERNEL);
468 if (!buf) {
469 dev_err(&priv->udev->dev, "(p54usb) cannot allocate firmware"
470 "upload buffer!\n");
471 return -ENOMEM;
472 }
473
474 left = block_size = min((size_t)P54U_FW_BLOCK, priv->fw->size);
475 strcpy(buf, p54u_firmware_upload_3887);
476 left -= strlen(p54u_firmware_upload_3887);
477 tmp += strlen(p54u_firmware_upload_3887);
478
479 data = priv->fw->data;
480 remains = priv->fw->size;
481
482 hdr = (struct x2_header *)(buf + strlen(p54u_firmware_upload_3887));
483 memcpy(hdr->signature, X2_SIGNATURE, X2_SIGNATURE_SIZE);
484 hdr->fw_load_addr = cpu_to_le32(ISL38XX_DEV_FIRMWARE_ADDR);
485 hdr->fw_length = cpu_to_le32(priv->fw->size);
486 hdr->crc = cpu_to_le32(~crc32_le(~0, (void *)&hdr->fw_load_addr,
487 sizeof(u32)*2));
488 left -= sizeof(*hdr);
489 tmp += sizeof(*hdr);
490
491 while (remains) {
492 while (left--) {
493 if (carry) {
494 *tmp++ = carry;
495 carry = 0;
496 remains--;
497 continue;
498 }
499 switch (*data) {
500 case '~':
501 *tmp++ = '}';
502 carry = '^';
503 break;
504 case '}':
505 *tmp++ = '}';
506 carry = ']';
507 break;
508 default:
509 *tmp++ = *data;
510 remains--;
511 break;
512 }
513 data++;
514 }
515
516 err = p54u_bulk_msg(priv, P54U_PIPE_DATA, buf, block_size);
517 if (err) {
518 dev_err(&priv->udev->dev, "(p54usb) firmware "
519 "upload failed!\n");
520 goto err_upload_failed;
521 }
522
523 tmp = buf;
524 left = block_size = min((unsigned int)P54U_FW_BLOCK, remains);
525 }
526
527 *((__le32 *)buf) = cpu_to_le32(~crc32_le(~0, priv->fw->data,
528 priv->fw->size));
529 err = p54u_bulk_msg(priv, P54U_PIPE_DATA, buf, sizeof(u32));
530 if (err) {
531 dev_err(&priv->udev->dev, "(p54usb) firmware upload failed!\n");
532 goto err_upload_failed;
533 }
534 timeout = jiffies + msecs_to_jiffies(1000);
535 while (!(err = usb_bulk_msg(priv->udev,
536 usb_rcvbulkpipe(priv->udev, P54U_PIPE_DATA), buf, 128, &alen, 1000))) {
537 if (alen > 2 && !memcmp(buf, "OK", 2))
538 break;
539
540 if (alen > 5 && !memcmp(buf, "ERROR", 5)) {
541 err = -EINVAL;
542 break;
543 }
544
545 if (time_after(jiffies, timeout)) {
546 dev_err(&priv->udev->dev, "(p54usb) firmware boot "
547 "timed out!\n");
548 err = -ETIMEDOUT;
549 break;
550 }
551 }
552 if (err) {
553 dev_err(&priv->udev->dev, "(p54usb) firmware upload failed!\n");
554 goto err_upload_failed;
555 }
556
557 buf[0] = 'g';
558 buf[1] = '\r';
559 err = p54u_bulk_msg(priv, P54U_PIPE_DATA, buf, 2);
560 if (err) {
561 dev_err(&priv->udev->dev, "(p54usb) firmware boot failed!\n");
562 goto err_upload_failed;
563 }
564
565 timeout = jiffies + msecs_to_jiffies(1000);
566 while (!(err = usb_bulk_msg(priv->udev,
567 usb_rcvbulkpipe(priv->udev, P54U_PIPE_DATA), buf, 128, &alen, 1000))) {
568 if (alen > 0 && buf[0] == 'g')
569 break;
570
571 if (time_after(jiffies, timeout)) {
572 err = -ETIMEDOUT;
573 break;
574 }
575 }
576 if (err)
577 goto err_upload_failed;
578
579err_upload_failed:
580 kfree(buf);
581 return err;
582}
583
584static int p54u_upload_firmware_net2280(struct ieee80211_hw *dev)
585{
586 struct p54u_priv *priv = dev->priv;
587 const struct p54p_csr *devreg = (const struct p54p_csr *) P54U_DEV_BASE;
588 int err, alen;
589 void *buf;
590 __le32 reg;
591 unsigned int remains, offset;
592 const u8 *data;
593
594 buf = kmalloc(512, GFP_KERNEL);
595 if (!buf) {
596 dev_err(&priv->udev->dev, "(p54usb) firmware buffer "
597 "alloc failed!\n");
598 return -ENOMEM;
599 }
600
601#define P54U_WRITE(type, addr, data) \
602 do {\
603 err = p54u_write(priv, buf, type,\
604 cpu_to_le32((u32)(unsigned long)addr), data);\
605 if (err) \
606 goto fail;\
607 } while (0)
608
609#define P54U_READ(type, addr) \
610 do {\
611 err = p54u_read(priv, buf, type,\
612 cpu_to_le32((u32)(unsigned long)addr), ®);\
613 if (err)\
614 goto fail;\
615 } while (0)
616
617
618 P54U_READ(NET2280_BRG_U32, NET2280_GPIOCTL);
619 reg |= cpu_to_le32(P54U_BRG_POWER_DOWN);
620 reg &= cpu_to_le32(~P54U_BRG_POWER_UP);
621 P54U_WRITE(NET2280_BRG_U32, NET2280_GPIOCTL, reg);
622
623 mdelay(100);
624
625
626 reg |= cpu_to_le32(P54U_BRG_POWER_UP);
627 reg &= cpu_to_le32(~P54U_BRG_POWER_DOWN);
628 P54U_WRITE(NET2280_BRG_U32, NET2280_GPIOCTL, reg);
629
630 mdelay(100);
631
632 P54U_WRITE(NET2280_BRG_U32, NET2280_DEVINIT,
633 cpu_to_le32(NET2280_CLK_30Mhz |
634 NET2280_PCI_ENABLE |
635 NET2280_PCI_SOFT_RESET));
636
637 mdelay(20);
638
639 P54U_WRITE(NET2280_BRG_CFG_U16, PCI_COMMAND,
640 cpu_to_le32(PCI_COMMAND_MEMORY |
641 PCI_COMMAND_MASTER));
642
643 P54U_WRITE(NET2280_BRG_CFG_U32, PCI_BASE_ADDRESS_0,
644 cpu_to_le32(NET2280_BASE));
645
646 P54U_READ(NET2280_BRG_CFG_U16, PCI_STATUS);
647 reg |= cpu_to_le32(PCI_STATUS_REC_MASTER_ABORT);
648 P54U_WRITE(NET2280_BRG_CFG_U16, PCI_STATUS, reg);
649
650
651 P54U_READ(NET2280_BRG_U32, NET2280_RELNUM);
652
653 P54U_WRITE(NET2280_BRG_U32, NET2280_EPA_RSP,
654 cpu_to_le32(NET2280_CLEAR_NAK_OUT_PACKETS_MODE));
655 P54U_WRITE(NET2280_BRG_U32, NET2280_EPC_RSP,
656 cpu_to_le32(NET2280_CLEAR_NAK_OUT_PACKETS_MODE));
657
658 P54U_WRITE(NET2280_BRG_CFG_U32, PCI_BASE_ADDRESS_2,
659 cpu_to_le32(NET2280_BASE2));
660
661
662
663 P54U_WRITE(NET2280_DEV_CFG_U16, 0x10000 | PCI_COMMAND,
664 cpu_to_le32(PCI_COMMAND_MEMORY |
665 PCI_COMMAND_MASTER));
666
667 P54U_WRITE(NET2280_DEV_CFG_U16, 0x10000 | 0x40 , 0);
668 P54U_WRITE(NET2280_DEV_CFG_U32, 0x10000 | PCI_BASE_ADDRESS_0,
669 cpu_to_le32(P54U_DEV_BASE));
670
671 P54U_WRITE(NET2280_BRG_U32, NET2280_USBIRQENB1, 0);
672 P54U_WRITE(NET2280_BRG_U32, NET2280_IRQSTAT1,
673 cpu_to_le32(NET2280_PCI_INTA_INTERRUPT));
674
675
676 P54U_WRITE(NET2280_DEV_U32, &devreg->int_enable, 0);
677
678 P54U_READ(NET2280_DEV_U32, &devreg->ctrl_stat);
679 reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET);
680 reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RAMBOOT);
681 reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_CLKRUN);
682 P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
683
684 mdelay(20);
685
686 reg |= cpu_to_le32(ISL38XX_CTRL_STAT_RESET);
687 P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
688
689 mdelay(20);
690
691 reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET);
692 P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
693
694 mdelay(100);
695
696 P54U_READ(NET2280_DEV_U32, &devreg->int_ident);
697 P54U_WRITE(NET2280_DEV_U32, &devreg->int_ack, reg);
698
699
700 remains = priv->fw->size;
701 data = priv->fw->data;
702 offset = ISL38XX_DEV_FIRMWARE_ADDR;
703
704 while (remains) {
705 unsigned int block_len = min(remains, (unsigned int)512);
706 memcpy(buf, data, block_len);
707
708 err = p54u_bulk_msg(priv, P54U_PIPE_DATA, buf, block_len);
709 if (err) {
710 dev_err(&priv->udev->dev, "(p54usb) firmware block "
711 "upload failed\n");
712 goto fail;
713 }
714
715 P54U_WRITE(NET2280_DEV_U32, &devreg->direct_mem_base,
716 cpu_to_le32(0xc0000f00));
717
718 P54U_WRITE(NET2280_DEV_U32,
719 0x0020 | (unsigned long)&devreg->direct_mem_win, 0);
720 P54U_WRITE(NET2280_DEV_U32,
721 0x0020 | (unsigned long)&devreg->direct_mem_win,
722 cpu_to_le32(1));
723
724 P54U_WRITE(NET2280_DEV_U32,
725 0x0024 | (unsigned long)&devreg->direct_mem_win,
726 cpu_to_le32(block_len));
727 P54U_WRITE(NET2280_DEV_U32,
728 0x0028 | (unsigned long)&devreg->direct_mem_win,
729 cpu_to_le32(offset));
730
731 P54U_WRITE(NET2280_DEV_U32, &devreg->dma_addr,
732 cpu_to_le32(NET2280_EPA_FIFO_PCI_ADDR));
733 P54U_WRITE(NET2280_DEV_U32, &devreg->dma_len,
734 cpu_to_le32(block_len >> 2));
735 P54U_WRITE(NET2280_DEV_U32, &devreg->dma_ctrl,
736 cpu_to_le32(ISL38XX_DMA_MASTER_CONTROL_TRIGGER));
737
738 mdelay(10);
739
740 P54U_READ(NET2280_DEV_U32,
741 0x002C | (unsigned long)&devreg->direct_mem_win);
742 if (!(reg & cpu_to_le32(ISL38XX_DMA_STATUS_DONE)) ||
743 !(reg & cpu_to_le32(ISL38XX_DMA_STATUS_READY))) {
744 dev_err(&priv->udev->dev, "(p54usb) firmware DMA "
745 "transfer failed\n");
746 goto fail;
747 }
748
749 P54U_WRITE(NET2280_BRG_U32, NET2280_EPA_STAT,
750 cpu_to_le32(NET2280_FIFO_FLUSH));
751
752 remains -= block_len;
753 data += block_len;
754 offset += block_len;
755 }
756
757
758 P54U_READ(NET2280_DEV_U32, &devreg->ctrl_stat);
759 reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET);
760 reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_CLKRUN);
761 reg |= cpu_to_le32(ISL38XX_CTRL_STAT_RAMBOOT);
762 P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
763
764 mdelay(20);
765
766 reg |= cpu_to_le32(ISL38XX_CTRL_STAT_RESET);
767 P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
768
769 reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET);
770 P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
771
772 mdelay(100);
773
774 P54U_READ(NET2280_DEV_U32, &devreg->int_ident);
775 P54U_WRITE(NET2280_DEV_U32, &devreg->int_ack, reg);
776
777
778 P54U_WRITE(NET2280_DEV_U32, &devreg->int_enable,
779 cpu_to_le32(ISL38XX_INT_IDENT_INIT));
780
781 P54U_WRITE(NET2280_BRG_U32, NET2280_IRQSTAT1,
782 cpu_to_le32(NET2280_PCI_INTA_INTERRUPT));
783
784 P54U_WRITE(NET2280_BRG_U32, NET2280_USBIRQENB1,
785 cpu_to_le32(NET2280_PCI_INTA_INTERRUPT_ENABLE |
786 NET2280_USB_INTERRUPT_ENABLE));
787
788 P54U_WRITE(NET2280_DEV_U32, &devreg->dev_int,
789 cpu_to_le32(ISL38XX_DEV_INT_RESET));
790
791 err = usb_interrupt_msg(priv->udev,
792 usb_rcvbulkpipe(priv->udev, P54U_PIPE_INT),
793 buf, sizeof(__le32), &alen, 1000);
794 if (err || alen != sizeof(__le32))
795 goto fail;
796
797 P54U_READ(NET2280_DEV_U32, &devreg->int_ident);
798 P54U_WRITE(NET2280_DEV_U32, &devreg->int_ack, reg);
799
800 if (!(reg & cpu_to_le32(ISL38XX_INT_IDENT_INIT)))
801 err = -EINVAL;
802
803 P54U_WRITE(NET2280_BRG_U32, NET2280_USBIRQENB1, 0);
804 P54U_WRITE(NET2280_BRG_U32, NET2280_IRQSTAT1,
805 cpu_to_le32(NET2280_PCI_INTA_INTERRUPT));
806
807#undef P54U_WRITE
808#undef P54U_READ
809
810fail:
811 kfree(buf);
812 return err;
813}
814
815static int p54u_load_firmware(struct ieee80211_hw *dev)
816{
817 struct p54u_priv *priv = dev->priv;
818 int err, i;
819
820 BUILD_BUG_ON(ARRAY_SIZE(p54u_fwlist) != __NUM_P54U_HWTYPES);
821
822 for (i = 0; i < __NUM_P54U_HWTYPES; i++)
823 if (p54u_fwlist[i].type == priv->hw_type)
824 break;
825
826 if (i == __NUM_P54U_HWTYPES)
827 return -EOPNOTSUPP;
828
829 err = request_firmware(&priv->fw, p54u_fwlist[i].fw, &priv->udev->dev);
830 if (err) {
831 dev_err(&priv->udev->dev, "(p54usb) cannot load firmware %s "
832 "(%d)!\n", p54u_fwlist[i].fw, err);
833
834 err = request_firmware(&priv->fw, p54u_fwlist[i].fw_legacy,
835 &priv->udev->dev);
836 if (err)
837 return err;
838 }
839
840 err = p54_parse_firmware(dev, priv->fw);
841 if (err)
842 goto out;
843
844 if (priv->common.fw_interface != p54u_fwlist[i].intf) {
845 dev_err(&priv->udev->dev, "wrong firmware, please get "
846 "a firmware for \"%s\" and try again.\n",
847 p54u_fwlist[i].hw);
848 err = -EINVAL;
849 }
850
851out:
852 if (err)
853 release_firmware(priv->fw);
854
855 return err;
856}
857
858static int p54u_open(struct ieee80211_hw *dev)
859{
860 struct p54u_priv *priv = dev->priv;
861 int err;
862
863 err = p54u_init_urbs(dev);
864 if (err) {
865 return err;
866 }
867
868 priv->common.open = p54u_init_urbs;
869
870 return 0;
871}
872
873static void p54u_stop(struct ieee80211_hw *dev)
874{
875
876
877
878 p54u_free_urbs(dev);
879 return;
880}
881
882static int __devinit p54u_probe(struct usb_interface *intf,
883 const struct usb_device_id *id)
884{
885 struct usb_device *udev = interface_to_usbdev(intf);
886 struct ieee80211_hw *dev;
887 struct p54u_priv *priv;
888 int err;
889 unsigned int i, recognized_pipes;
890
891 dev = p54_init_common(sizeof(*priv));
892
893 if (!dev) {
894 dev_err(&udev->dev, "(p54usb) ieee80211 alloc failed\n");
895 return -ENOMEM;
896 }
897
898 priv = dev->priv;
899 priv->hw_type = P54U_INVALID_HW;
900
901 SET_IEEE80211_DEV(dev, &intf->dev);
902 usb_set_intfdata(intf, dev);
903 priv->udev = udev;
904 priv->intf = intf;
905 skb_queue_head_init(&priv->rx_queue);
906 init_usb_anchor(&priv->submitted);
907
908 usb_get_dev(udev);
909
910
911
912 i = intf->altsetting->desc.bNumEndpoints;
913 recognized_pipes = 0;
914 while (i--) {
915 switch (intf->altsetting->endpoint[i].desc.bEndpointAddress) {
916 case P54U_PIPE_DATA:
917 case P54U_PIPE_MGMT:
918 case P54U_PIPE_BRG:
919 case P54U_PIPE_DEV:
920 case P54U_PIPE_DATA | USB_DIR_IN:
921 case P54U_PIPE_MGMT | USB_DIR_IN:
922 case P54U_PIPE_BRG | USB_DIR_IN:
923 case P54U_PIPE_DEV | USB_DIR_IN:
924 case P54U_PIPE_INT | USB_DIR_IN:
925 recognized_pipes++;
926 }
927 }
928 priv->common.open = p54u_open;
929 priv->common.stop = p54u_stop;
930 if (recognized_pipes < P54U_PIPE_NUMBER) {
931#ifdef CONFIG_PM
932
933 udev->reset_resume = 1;
934 err = p54u_device_reset(dev);
935#endif
936
937 priv->hw_type = P54U_3887;
938 dev->extra_tx_headroom += sizeof(struct lm87_tx_hdr);
939 priv->common.tx_hdr_len = sizeof(struct lm87_tx_hdr);
940 priv->common.tx = p54u_tx_lm87;
941 priv->upload_fw = p54u_upload_firmware_3887;
942 } else {
943 priv->hw_type = P54U_NET2280;
944 dev->extra_tx_headroom += sizeof(struct net2280_tx_hdr);
945 priv->common.tx_hdr_len = sizeof(struct net2280_tx_hdr);
946 priv->common.tx = p54u_tx_net2280;
947 priv->upload_fw = p54u_upload_firmware_net2280;
948 }
949 err = p54u_load_firmware(dev);
950 if (err)
951 goto err_free_dev;
952
953 err = priv->upload_fw(dev);
954 if (err)
955 goto err_free_fw;
956
957 p54u_open(dev);
958 err = p54_read_eeprom(dev);
959 p54u_stop(dev);
960 if (err)
961 goto err_free_fw;
962
963 err = p54_register_common(dev, &udev->dev);
964 if (err)
965 goto err_free_fw;
966
967 return 0;
968
969err_free_fw:
970 release_firmware(priv->fw);
971
972err_free_dev:
973 p54_free_common(dev);
974 usb_set_intfdata(intf, NULL);
975 usb_put_dev(udev);
976 return err;
977}
978
979static void __devexit p54u_disconnect(struct usb_interface *intf)
980{
981 struct ieee80211_hw *dev = usb_get_intfdata(intf);
982 struct p54u_priv *priv;
983
984 if (!dev)
985 return;
986
987 p54_unregister_common(dev);
988
989 priv = dev->priv;
990 usb_put_dev(interface_to_usbdev(intf));
991 release_firmware(priv->fw);
992 p54_free_common(dev);
993}
994
995static int p54u_pre_reset(struct usb_interface *intf)
996{
997 struct ieee80211_hw *dev = usb_get_intfdata(intf);
998
999 if (!dev)
1000 return -ENODEV;
1001
1002 p54u_stop(dev);
1003 return 0;
1004}
1005
1006static int p54u_resume(struct usb_interface *intf)
1007{
1008 struct ieee80211_hw *dev = usb_get_intfdata(intf);
1009 struct p54u_priv *priv;
1010
1011 if (!dev)
1012 return -ENODEV;
1013
1014 priv = dev->priv;
1015 if (unlikely(!(priv->upload_fw && priv->fw)))
1016 return 0;
1017
1018 return priv->upload_fw(dev);
1019}
1020
1021static int p54u_post_reset(struct usb_interface *intf)
1022{
1023 struct ieee80211_hw *dev = usb_get_intfdata(intf);
1024 struct p54u_priv *priv;
1025 int err;
1026
1027 err = p54u_resume(intf);
1028 if (err)
1029 return err;
1030
1031
1032 priv = dev->priv;
1033 if (priv->common.mode != NL80211_IFTYPE_UNSPECIFIED)
1034 ieee80211_restart_hw(dev);
1035
1036 return 0;
1037}
1038
1039#ifdef CONFIG_PM
1040
1041static int p54u_suspend(struct usb_interface *intf, pm_message_t message)
1042{
1043 return p54u_pre_reset(intf);
1044}
1045
1046#endif
1047
1048static struct usb_driver p54u_driver = {
1049 .name = "p54usb",
1050 .id_table = p54u_table,
1051 .probe = p54u_probe,
1052 .disconnect = p54u_disconnect,
1053 .pre_reset = p54u_pre_reset,
1054 .post_reset = p54u_post_reset,
1055#ifdef CONFIG_PM
1056 .suspend = p54u_suspend,
1057 .resume = p54u_resume,
1058 .reset_resume = p54u_resume,
1059#endif
1060 .soft_unbind = 1,
1061};
1062
1063static int __init p54u_init(void)
1064{
1065 return usb_register(&p54u_driver);
1066}
1067
1068static void __exit p54u_exit(void)
1069{
1070 usb_deregister(&p54u_driver);
1071}
1072
1073module_init(p54u_init);
1074module_exit(p54u_exit);
1075
