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12#include <linux/usb.h>
13#include <linux/pci.h>
14#include <linux/slab.h>
15#include <linux/firmware.h>
16#include <linux/etherdevice.h>
17#include <linux/delay.h>
18#include <linux/crc32.h>
19#include <linux/module.h>
20#include <net/mac80211.h>
21
22#include "p54.h"
23#include "lmac.h"
24#include "p54usb.h"
25
26MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
27MODULE_DESCRIPTION("Prism54 USB wireless driver");
28MODULE_LICENSE("GPL");
29MODULE_ALIAS("prism54usb");
30MODULE_FIRMWARE("isl3886usb");
31MODULE_FIRMWARE("isl3887usb");
32
33static struct usb_driver p54u_driver;
34
35
36
37
38
39
40
41
42
43static const struct usb_device_id p54u_table[] = {
44
45 {USB_DEVICE(0x0411, 0x0050)},
46 {USB_DEVICE(0x045e, 0x00c2)},
47 {USB_DEVICE(0x0506, 0x0a11)},
48 {USB_DEVICE(0x0675, 0x0530)},
49 {USB_DEVICE(0x06b9, 0x0120)},
50 {USB_DEVICE(0x0707, 0xee06)},
51 {USB_DEVICE(0x07aa, 0x001c)},
52 {USB_DEVICE(0x083a, 0x4501)},
53 {USB_DEVICE(0x083a, 0x4502)},
54 {USB_DEVICE(0x083a, 0x5501)},
55 {USB_DEVICE(0x0846, 0x4200)},
56 {USB_DEVICE(0x0846, 0x4210)},
57 {USB_DEVICE(0x0846, 0x4220)},
58 {USB_DEVICE(0x09aa, 0x1000)},
59 {USB_DEVICE(0x0bf8, 0x1007)},
60 {USB_DEVICE(0x0cde, 0x0006)},
61 {USB_DEVICE(0x0db0, 0x6826)},
62 {USB_DEVICE(0x107b, 0x55f2)},
63 {USB_DEVICE(0x124a, 0x4023)},
64 {USB_DEVICE(0x1435, 0x0210)},
65 {USB_DEVICE(0x15a9, 0x0002)},
66 {USB_DEVICE(0x1630, 0x0005)},
67 {USB_DEVICE(0x182d, 0x096b)},
68 {USB_DEVICE(0x1915, 0x2234)},
69 {USB_DEVICE(0x1915, 0x2235)},
70 {USB_DEVICE(0x2001, 0x3701)},
71 {USB_DEVICE(0x2001, 0x3703)},
72 {USB_DEVICE(0x2001, 0x3762)},
73 {USB_DEVICE(0x5041, 0x2234)},
74 {USB_DEVICE(0x5041, 0x2235)},
75
76
77 {USB_DEVICE(0x0471, 0x1230)},
78 {USB_DEVICE(0x050d, 0x7050)},
79 {USB_DEVICE(0x0572, 0x2000)},
80 {USB_DEVICE(0x0572, 0x2002)},
81 {USB_DEVICE(0x06a9, 0x000e)},
82 {USB_DEVICE(0x06b9, 0x0121)},
83 {USB_DEVICE(0x0707, 0xee13)},
84 {USB_DEVICE(0x07aa, 0x0020)},
85 {USB_DEVICE(0x0803, 0x4310)},
86 {USB_DEVICE(0x083a, 0x4521)},
87 {USB_DEVICE(0x083a, 0x4531)},
88 {USB_DEVICE(0x083a, 0xc501)},
89 {USB_DEVICE(0x083a, 0xf503)},
90 {USB_DEVICE(0x0846, 0x4240)},
91 {USB_DEVICE(0x0915, 0x2000)},
92 {USB_DEVICE(0x0915, 0x2002)},
93 {USB_DEVICE(0x0baf, 0x0118)},
94 {USB_DEVICE(0x0bf8, 0x1009)},
95
96
97 {USB_DEVICE(0x0cde, 0x0008)},
98 {USB_DEVICE(0x0cde, 0x0015)},
99 {USB_DEVICE(0x0d8e, 0x3762)},
100 {USB_DEVICE(0x124a, 0x4025)},
101 {USB_DEVICE(0x1260, 0xee22)},
102 {USB_DEVICE(0x13b1, 0x000a)},
103 {USB_DEVICE(0x13B1, 0x000C)},
104 {USB_DEVICE(0x1413, 0x5400)},
105 {USB_DEVICE(0x1435, 0x0427)},
106
107 {USB_DEVICE(0x1668, 0x1050)},
108 {USB_DEVICE(0x1740, 0x1000)},
109 {USB_DEVICE(0x2001, 0x3704)},
110 {USB_DEVICE(0x2001, 0x3705)},
111 {USB_DEVICE(0x413c, 0x5513)},
112 {USB_DEVICE(0x413c, 0x8102)},
113 {USB_DEVICE(0x413c, 0x8104)},
114 {}
115};
116
117MODULE_DEVICE_TABLE(usb, p54u_table);
118
119static const struct {
120 u32 intf;
121 enum p54u_hw_type type;
122 const char *fw;
123 char hw[20];
124} p54u_fwlist[__NUM_P54U_HWTYPES] = {
125 {
126 .type = P54U_NET2280,
127 .intf = FW_LM86,
128 .fw = "isl3886usb",
129 .hw = "ISL3886 + net2280",
130 },
131 {
132 .type = P54U_3887,
133 .intf = FW_LM87,
134 .fw = "isl3887usb",
135 .hw = "ISL3887",
136 },
137};
138
139static void p54u_rx_cb(struct urb *urb)
140{
141 struct sk_buff *skb = (struct sk_buff *) urb->context;
142 struct p54u_rx_info *info = (struct p54u_rx_info *)skb->cb;
143 struct ieee80211_hw *dev = info->dev;
144 struct p54u_priv *priv = dev->priv;
145
146 skb_unlink(skb, &priv->rx_queue);
147
148 if (unlikely(urb->status)) {
149 dev_kfree_skb_irq(skb);
150 return;
151 }
152
153 skb_put(skb, urb->actual_length);
154
155 if (priv->hw_type == P54U_NET2280)
156 skb_pull(skb, priv->common.tx_hdr_len);
157 if (priv->common.fw_interface == FW_LM87) {
158 skb_pull(skb, 4);
159 skb_put(skb, 4);
160 }
161
162 if (p54_rx(dev, skb)) {
163 skb = dev_alloc_skb(priv->common.rx_mtu + 32);
164 if (unlikely(!skb)) {
165
166 return;
167 }
168
169 info = (struct p54u_rx_info *) skb->cb;
170 info->urb = urb;
171 info->dev = dev;
172 urb->transfer_buffer = skb_tail_pointer(skb);
173 urb->context = skb;
174 } else {
175 if (priv->hw_type == P54U_NET2280)
176 skb_push(skb, priv->common.tx_hdr_len);
177 if (priv->common.fw_interface == FW_LM87) {
178 skb_push(skb, 4);
179 skb_put(skb, 4);
180 }
181 skb_reset_tail_pointer(skb);
182 skb_trim(skb, 0);
183 urb->transfer_buffer = skb_tail_pointer(skb);
184 }
185 skb_queue_tail(&priv->rx_queue, skb);
186 usb_anchor_urb(urb, &priv->submitted);
187 if (usb_submit_urb(urb, GFP_ATOMIC)) {
188 skb_unlink(skb, &priv->rx_queue);
189 usb_unanchor_urb(urb);
190 dev_kfree_skb_irq(skb);
191 }
192}
193
194static void p54u_tx_cb(struct urb *urb)
195{
196 struct sk_buff *skb = urb->context;
197 struct ieee80211_hw *dev =
198 usb_get_intfdata(usb_ifnum_to_if(urb->dev, 0));
199
200 p54_free_skb(dev, skb);
201}
202
203static void p54u_tx_dummy_cb(struct urb *urb) { }
204
205static void p54u_free_urbs(struct ieee80211_hw *dev)
206{
207 struct p54u_priv *priv = dev->priv;
208 usb_kill_anchored_urbs(&priv->submitted);
209}
210
211static void p54u_stop(struct ieee80211_hw *dev)
212{
213
214
215
216
217
218 p54u_free_urbs(dev);
219}
220
221static int p54u_init_urbs(struct ieee80211_hw *dev)
222{
223 struct p54u_priv *priv = dev->priv;
224 struct urb *entry = NULL;
225 struct sk_buff *skb;
226 struct p54u_rx_info *info;
227 int ret = 0;
228
229 while (skb_queue_len(&priv->rx_queue) < 32) {
230 skb = __dev_alloc_skb(priv->common.rx_mtu + 32, GFP_KERNEL);
231 if (!skb) {
232 ret = -ENOMEM;
233 goto err;
234 }
235 entry = usb_alloc_urb(0, GFP_KERNEL);
236 if (!entry) {
237 ret = -ENOMEM;
238 goto err;
239 }
240
241 usb_fill_bulk_urb(entry, priv->udev,
242 usb_rcvbulkpipe(priv->udev, P54U_PIPE_DATA),
243 skb_tail_pointer(skb),
244 priv->common.rx_mtu + 32, p54u_rx_cb, skb);
245 info = (struct p54u_rx_info *) skb->cb;
246 info->urb = entry;
247 info->dev = dev;
248 skb_queue_tail(&priv->rx_queue, skb);
249
250 usb_anchor_urb(entry, &priv->submitted);
251 ret = usb_submit_urb(entry, GFP_KERNEL);
252 if (ret) {
253 skb_unlink(skb, &priv->rx_queue);
254 usb_unanchor_urb(entry);
255 goto err;
256 }
257 usb_free_urb(entry);
258 entry = NULL;
259 }
260
261 return 0;
262
263 err:
264 usb_free_urb(entry);
265 kfree_skb(skb);
266 p54u_free_urbs(dev);
267 return ret;
268}
269
270static int p54u_open(struct ieee80211_hw *dev)
271{
272
273
274
275
276
277 return p54u_init_urbs(dev);
278}
279
280static __le32 p54u_lm87_chksum(const __le32 *data, size_t length)
281{
282 u32 chk = 0;
283
284 length >>= 2;
285 while (length--) {
286 chk ^= le32_to_cpu(*data++);
287 chk = (chk >> 5) ^ (chk << 3);
288 }
289
290 return cpu_to_le32(chk);
291}
292
293static void p54u_tx_lm87(struct ieee80211_hw *dev, struct sk_buff *skb)
294{
295 struct p54u_priv *priv = dev->priv;
296 struct urb *data_urb;
297 struct lm87_tx_hdr *hdr = (void *)skb->data - sizeof(*hdr);
298
299 data_urb = usb_alloc_urb(0, GFP_ATOMIC);
300 if (!data_urb) {
301 p54_free_skb(dev, skb);
302 return;
303 }
304
305 hdr->chksum = p54u_lm87_chksum((__le32 *)skb->data, skb->len);
306 hdr->device_addr = ((struct p54_hdr *)skb->data)->req_id;
307
308 usb_fill_bulk_urb(data_urb, priv->udev,
309 usb_sndbulkpipe(priv->udev, P54U_PIPE_DATA),
310 hdr, skb->len + sizeof(*hdr), FREE_AFTER_TX(skb) ?
311 p54u_tx_cb : p54u_tx_dummy_cb, skb);
312 data_urb->transfer_flags |= URB_ZERO_PACKET;
313
314 usb_anchor_urb(data_urb, &priv->submitted);
315 if (usb_submit_urb(data_urb, GFP_ATOMIC)) {
316 usb_unanchor_urb(data_urb);
317 p54_free_skb(dev, skb);
318 }
319 usb_free_urb(data_urb);
320}
321
322static void p54u_tx_net2280(struct ieee80211_hw *dev, struct sk_buff *skb)
323{
324 struct p54u_priv *priv = dev->priv;
325 struct urb *int_urb = NULL, *data_urb = NULL;
326 struct net2280_tx_hdr *hdr = (void *)skb->data - sizeof(*hdr);
327 struct net2280_reg_write *reg = NULL;
328 int err = -ENOMEM;
329
330 reg = kmalloc(sizeof(*reg), GFP_ATOMIC);
331 if (!reg)
332 goto out;
333
334 int_urb = usb_alloc_urb(0, GFP_ATOMIC);
335 if (!int_urb)
336 goto out;
337
338 data_urb = usb_alloc_urb(0, GFP_ATOMIC);
339 if (!data_urb)
340 goto out;
341
342 reg->port = cpu_to_le16(NET2280_DEV_U32);
343 reg->addr = cpu_to_le32(P54U_DEV_BASE);
344 reg->val = cpu_to_le32(ISL38XX_DEV_INT_DATA);
345
346 memset(hdr, 0, sizeof(*hdr));
347 hdr->len = cpu_to_le16(skb->len);
348 hdr->device_addr = ((struct p54_hdr *) skb->data)->req_id;
349
350 usb_fill_bulk_urb(int_urb, priv->udev,
351 usb_sndbulkpipe(priv->udev, P54U_PIPE_DEV), reg, sizeof(*reg),
352 p54u_tx_dummy_cb, dev);
353
354
355
356
357
358
359 int_urb->transfer_flags |= URB_FREE_BUFFER | URB_ZERO_PACKET;
360 reg = NULL;
361
362 usb_fill_bulk_urb(data_urb, priv->udev,
363 usb_sndbulkpipe(priv->udev, P54U_PIPE_DATA),
364 hdr, skb->len + sizeof(*hdr), FREE_AFTER_TX(skb) ?
365 p54u_tx_cb : p54u_tx_dummy_cb, skb);
366 data_urb->transfer_flags |= URB_ZERO_PACKET;
367
368 usb_anchor_urb(int_urb, &priv->submitted);
369 err = usb_submit_urb(int_urb, GFP_ATOMIC);
370 if (err) {
371 usb_unanchor_urb(int_urb);
372 goto out;
373 }
374
375 usb_anchor_urb(data_urb, &priv->submitted);
376 err = usb_submit_urb(data_urb, GFP_ATOMIC);
377 if (err) {
378 usb_unanchor_urb(data_urb);
379 goto out;
380 }
381out:
382 usb_free_urb(int_urb);
383 usb_free_urb(data_urb);
384
385 if (err) {
386 kfree(reg);
387 p54_free_skb(dev, skb);
388 }
389}
390
391static int p54u_write(struct p54u_priv *priv,
392 struct net2280_reg_write *buf,
393 enum net2280_op_type type,
394 __le32 addr, __le32 val)
395{
396 unsigned int ep;
397 int alen;
398
399 if (type & 0x0800)
400 ep = usb_sndbulkpipe(priv->udev, P54U_PIPE_DEV);
401 else
402 ep = usb_sndbulkpipe(priv->udev, P54U_PIPE_BRG);
403
404 buf->port = cpu_to_le16(type);
405 buf->addr = addr;
406 buf->val = val;
407
408 return usb_bulk_msg(priv->udev, ep, buf, sizeof(*buf), &alen, 1000);
409}
410
411static int p54u_read(struct p54u_priv *priv, void *buf,
412 enum net2280_op_type type,
413 __le32 addr, __le32 *val)
414{
415 struct net2280_reg_read *read = buf;
416 __le32 *reg = buf;
417 unsigned int ep;
418 int alen, err;
419
420 if (type & 0x0800)
421 ep = P54U_PIPE_DEV;
422 else
423 ep = P54U_PIPE_BRG;
424
425 read->port = cpu_to_le16(type);
426 read->addr = addr;
427
428 err = usb_bulk_msg(priv->udev, usb_sndbulkpipe(priv->udev, ep),
429 read, sizeof(*read), &alen, 1000);
430 if (err)
431 return err;
432
433 err = usb_bulk_msg(priv->udev, usb_rcvbulkpipe(priv->udev, ep),
434 reg, sizeof(*reg), &alen, 1000);
435 if (err)
436 return err;
437
438 *val = *reg;
439 return 0;
440}
441
442static int p54u_bulk_msg(struct p54u_priv *priv, unsigned int ep,
443 void *data, size_t len)
444{
445 int alen;
446 return usb_bulk_msg(priv->udev, usb_sndbulkpipe(priv->udev, ep),
447 data, len, &alen, 2000);
448}
449
450static int p54u_device_reset(struct ieee80211_hw *dev)
451{
452 struct p54u_priv *priv = dev->priv;
453 int ret, lock = (priv->intf->condition != USB_INTERFACE_BINDING);
454
455 if (lock) {
456 ret = usb_lock_device_for_reset(priv->udev, priv->intf);
457 if (ret < 0) {
458 dev_err(&priv->udev->dev, "(p54usb) unable to lock "
459 "device for reset (%d)!\n", ret);
460 return ret;
461 }
462 }
463
464 ret = usb_reset_device(priv->udev);
465 if (lock)
466 usb_unlock_device(priv->udev);
467
468 if (ret)
469 dev_err(&priv->udev->dev, "(p54usb) unable to reset "
470 "device (%d)!\n", ret);
471
472 return ret;
473}
474
475static const char p54u_romboot_3887[] = "~~~~";
476static int p54u_firmware_reset_3887(struct ieee80211_hw *dev)
477{
478 struct p54u_priv *priv = dev->priv;
479 u8 *buf;
480 int ret;
481
482 buf = kmemdup(p54u_romboot_3887, 4, GFP_KERNEL);
483 if (!buf)
484 return -ENOMEM;
485 ret = p54u_bulk_msg(priv, P54U_PIPE_DATA,
486 buf, 4);
487 kfree(buf);
488 if (ret)
489 dev_err(&priv->udev->dev, "(p54usb) unable to jump to "
490 "boot ROM (%d)!\n", ret);
491
492 return ret;
493}
494
495static const char p54u_firmware_upload_3887[] = "<\r";
496static int p54u_upload_firmware_3887(struct ieee80211_hw *dev)
497{
498 struct p54u_priv *priv = dev->priv;
499 int err, alen;
500 u8 carry = 0;
501 u8 *buf, *tmp;
502 const u8 *data;
503 unsigned int left, remains, block_size;
504 struct x2_header *hdr;
505 unsigned long timeout;
506
507 err = p54u_firmware_reset_3887(dev);
508 if (err)
509 return err;
510
511 tmp = buf = kmalloc(P54U_FW_BLOCK, GFP_KERNEL);
512 if (!buf)
513 return -ENOMEM;
514
515 left = block_size = min_t(size_t, P54U_FW_BLOCK, priv->fw->size);
516 strcpy(buf, p54u_firmware_upload_3887);
517 left -= strlen(p54u_firmware_upload_3887);
518 tmp += strlen(p54u_firmware_upload_3887);
519
520 data = priv->fw->data;
521 remains = priv->fw->size;
522
523 hdr = (struct x2_header *)(buf + strlen(p54u_firmware_upload_3887));
524 memcpy(hdr->signature, X2_SIGNATURE, X2_SIGNATURE_SIZE);
525 hdr->fw_load_addr = cpu_to_le32(ISL38XX_DEV_FIRMWARE_ADDR);
526 hdr->fw_length = cpu_to_le32(priv->fw->size);
527 hdr->crc = cpu_to_le32(~crc32_le(~0, (void *)&hdr->fw_load_addr,
528 sizeof(u32)*2));
529 left -= sizeof(*hdr);
530 tmp += sizeof(*hdr);
531
532 while (remains) {
533 while (left--) {
534 if (carry) {
535 *tmp++ = carry;
536 carry = 0;
537 remains--;
538 continue;
539 }
540 switch (*data) {
541 case '~':
542 *tmp++ = '}';
543 carry = '^';
544 break;
545 case '}':
546 *tmp++ = '}';
547 carry = ']';
548 break;
549 default:
550 *tmp++ = *data;
551 remains--;
552 break;
553 }
554 data++;
555 }
556
557 err = p54u_bulk_msg(priv, P54U_PIPE_DATA, buf, block_size);
558 if (err) {
559 dev_err(&priv->udev->dev, "(p54usb) firmware "
560 "upload failed!\n");
561 goto err_upload_failed;
562 }
563
564 tmp = buf;
565 left = block_size = min((unsigned int)P54U_FW_BLOCK, remains);
566 }
567
568 *((__le32 *)buf) = cpu_to_le32(~crc32_le(~0, priv->fw->data,
569 priv->fw->size));
570 err = p54u_bulk_msg(priv, P54U_PIPE_DATA, buf, sizeof(u32));
571 if (err) {
572 dev_err(&priv->udev->dev, "(p54usb) firmware upload failed!\n");
573 goto err_upload_failed;
574 }
575 timeout = jiffies + msecs_to_jiffies(1000);
576 while (!(err = usb_bulk_msg(priv->udev,
577 usb_rcvbulkpipe(priv->udev, P54U_PIPE_DATA), buf, 128, &alen, 1000))) {
578 if (alen > 2 && !memcmp(buf, "OK", 2))
579 break;
580
581 if (alen > 5 && !memcmp(buf, "ERROR", 5)) {
582 err = -EINVAL;
583 break;
584 }
585
586 if (time_after(jiffies, timeout)) {
587 dev_err(&priv->udev->dev, "(p54usb) firmware boot "
588 "timed out!\n");
589 err = -ETIMEDOUT;
590 break;
591 }
592 }
593 if (err) {
594 dev_err(&priv->udev->dev, "(p54usb) firmware upload failed!\n");
595 goto err_upload_failed;
596 }
597
598 buf[0] = 'g';
599 buf[1] = '\r';
600 err = p54u_bulk_msg(priv, P54U_PIPE_DATA, buf, 2);
601 if (err) {
602 dev_err(&priv->udev->dev, "(p54usb) firmware boot failed!\n");
603 goto err_upload_failed;
604 }
605
606 timeout = jiffies + msecs_to_jiffies(1000);
607 while (!(err = usb_bulk_msg(priv->udev,
608 usb_rcvbulkpipe(priv->udev, P54U_PIPE_DATA), buf, 128, &alen, 1000))) {
609 if (alen > 0 && buf[0] == 'g')
610 break;
611
612 if (time_after(jiffies, timeout)) {
613 err = -ETIMEDOUT;
614 break;
615 }
616 }
617 if (err)
618 goto err_upload_failed;
619
620err_upload_failed:
621 kfree(buf);
622 return err;
623}
624
625static int p54u_upload_firmware_net2280(struct ieee80211_hw *dev)
626{
627 struct p54u_priv *priv = dev->priv;
628 const struct p54p_csr *devreg = (const struct p54p_csr *) P54U_DEV_BASE;
629 int err, alen;
630 void *buf;
631 __le32 reg;
632 unsigned int remains, offset;
633 const u8 *data;
634
635 buf = kmalloc(512, GFP_KERNEL);
636 if (!buf)
637 return -ENOMEM;
638
639#define P54U_WRITE(type, addr, data) \
640 do {\
641 err = p54u_write(priv, buf, type,\
642 cpu_to_le32((u32)(unsigned long)addr), data);\
643 if (err) \
644 goto fail;\
645 } while (0)
646
647#define P54U_READ(type, addr) \
648 do {\
649 err = p54u_read(priv, buf, type,\
650 cpu_to_le32((u32)(unsigned long)addr), ®);\
651 if (err)\
652 goto fail;\
653 } while (0)
654
655
656 P54U_READ(NET2280_BRG_U32, NET2280_GPIOCTL);
657 reg |= cpu_to_le32(P54U_BRG_POWER_DOWN);
658 reg &= cpu_to_le32(~P54U_BRG_POWER_UP);
659 P54U_WRITE(NET2280_BRG_U32, NET2280_GPIOCTL, reg);
660
661 mdelay(100);
662
663
664 reg |= cpu_to_le32(P54U_BRG_POWER_UP);
665 reg &= cpu_to_le32(~P54U_BRG_POWER_DOWN);
666 P54U_WRITE(NET2280_BRG_U32, NET2280_GPIOCTL, reg);
667
668 mdelay(100);
669
670 P54U_WRITE(NET2280_BRG_U32, NET2280_DEVINIT,
671 cpu_to_le32(NET2280_CLK_30Mhz |
672 NET2280_PCI_ENABLE |
673 NET2280_PCI_SOFT_RESET));
674
675 mdelay(20);
676
677 P54U_WRITE(NET2280_BRG_CFG_U16, PCI_COMMAND,
678 cpu_to_le32(PCI_COMMAND_MEMORY |
679 PCI_COMMAND_MASTER));
680
681 P54U_WRITE(NET2280_BRG_CFG_U32, PCI_BASE_ADDRESS_0,
682 cpu_to_le32(NET2280_BASE));
683
684 P54U_READ(NET2280_BRG_CFG_U16, PCI_STATUS);
685 reg |= cpu_to_le32(PCI_STATUS_REC_MASTER_ABORT);
686 P54U_WRITE(NET2280_BRG_CFG_U16, PCI_STATUS, reg);
687
688
689 P54U_READ(NET2280_BRG_U32, NET2280_RELNUM);
690
691 P54U_WRITE(NET2280_BRG_U32, NET2280_EPA_RSP,
692 cpu_to_le32(NET2280_CLEAR_NAK_OUT_PACKETS_MODE));
693 P54U_WRITE(NET2280_BRG_U32, NET2280_EPC_RSP,
694 cpu_to_le32(NET2280_CLEAR_NAK_OUT_PACKETS_MODE));
695
696 P54U_WRITE(NET2280_BRG_CFG_U32, PCI_BASE_ADDRESS_2,
697 cpu_to_le32(NET2280_BASE2));
698
699
700
701 P54U_WRITE(NET2280_DEV_CFG_U16, 0x10000 | PCI_COMMAND,
702 cpu_to_le32(PCI_COMMAND_MEMORY |
703 PCI_COMMAND_MASTER));
704
705 P54U_WRITE(NET2280_DEV_CFG_U16, 0x10000 | 0x40 , 0);
706 P54U_WRITE(NET2280_DEV_CFG_U32, 0x10000 | PCI_BASE_ADDRESS_0,
707 cpu_to_le32(P54U_DEV_BASE));
708
709 P54U_WRITE(NET2280_BRG_U32, NET2280_USBIRQENB1, 0);
710 P54U_WRITE(NET2280_BRG_U32, NET2280_IRQSTAT1,
711 cpu_to_le32(NET2280_PCI_INTA_INTERRUPT));
712
713
714 P54U_WRITE(NET2280_DEV_U32, &devreg->int_enable, 0);
715
716 P54U_READ(NET2280_DEV_U32, &devreg->ctrl_stat);
717 reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET);
718 reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RAMBOOT);
719 reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_CLKRUN);
720 P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
721
722 mdelay(20);
723
724 reg |= cpu_to_le32(ISL38XX_CTRL_STAT_RESET);
725 P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
726
727 mdelay(20);
728
729 reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET);
730 P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
731
732 mdelay(100);
733
734 P54U_READ(NET2280_DEV_U32, &devreg->int_ident);
735 P54U_WRITE(NET2280_DEV_U32, &devreg->int_ack, reg);
736
737
738 remains = priv->fw->size;
739 data = priv->fw->data;
740 offset = ISL38XX_DEV_FIRMWARE_ADDR;
741
742 while (remains) {
743 unsigned int block_len = min(remains, (unsigned int)512);
744 memcpy(buf, data, block_len);
745
746 err = p54u_bulk_msg(priv, P54U_PIPE_DATA, buf, block_len);
747 if (err) {
748 dev_err(&priv->udev->dev, "(p54usb) firmware block "
749 "upload failed\n");
750 goto fail;
751 }
752
753 P54U_WRITE(NET2280_DEV_U32, &devreg->direct_mem_base,
754 cpu_to_le32(0xc0000f00));
755
756 P54U_WRITE(NET2280_DEV_U32,
757 0x0020 | (unsigned long)&devreg->direct_mem_win, 0);
758 P54U_WRITE(NET2280_DEV_U32,
759 0x0020 | (unsigned long)&devreg->direct_mem_win,
760 cpu_to_le32(1));
761
762 P54U_WRITE(NET2280_DEV_U32,
763 0x0024 | (unsigned long)&devreg->direct_mem_win,
764 cpu_to_le32(block_len));
765 P54U_WRITE(NET2280_DEV_U32,
766 0x0028 | (unsigned long)&devreg->direct_mem_win,
767 cpu_to_le32(offset));
768
769 P54U_WRITE(NET2280_DEV_U32, &devreg->dma_addr,
770 cpu_to_le32(NET2280_EPA_FIFO_PCI_ADDR));
771 P54U_WRITE(NET2280_DEV_U32, &devreg->dma_len,
772 cpu_to_le32(block_len >> 2));
773 P54U_WRITE(NET2280_DEV_U32, &devreg->dma_ctrl,
774 cpu_to_le32(ISL38XX_DMA_MASTER_CONTROL_TRIGGER));
775
776 mdelay(10);
777
778 P54U_READ(NET2280_DEV_U32,
779 0x002C | (unsigned long)&devreg->direct_mem_win);
780 if (!(reg & cpu_to_le32(ISL38XX_DMA_STATUS_DONE)) ||
781 !(reg & cpu_to_le32(ISL38XX_DMA_STATUS_READY))) {
782 dev_err(&priv->udev->dev, "(p54usb) firmware DMA "
783 "transfer failed\n");
784 goto fail;
785 }
786
787 P54U_WRITE(NET2280_BRG_U32, NET2280_EPA_STAT,
788 cpu_to_le32(NET2280_FIFO_FLUSH));
789
790 remains -= block_len;
791 data += block_len;
792 offset += block_len;
793 }
794
795
796 P54U_READ(NET2280_DEV_U32, &devreg->ctrl_stat);
797 reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET);
798 reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_CLKRUN);
799 reg |= cpu_to_le32(ISL38XX_CTRL_STAT_RAMBOOT);
800 P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
801
802 mdelay(20);
803
804 reg |= cpu_to_le32(ISL38XX_CTRL_STAT_RESET);
805 P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
806
807 reg &= cpu_to_le32(~ISL38XX_CTRL_STAT_RESET);
808 P54U_WRITE(NET2280_DEV_U32, &devreg->ctrl_stat, reg);
809
810 mdelay(100);
811
812 P54U_READ(NET2280_DEV_U32, &devreg->int_ident);
813 P54U_WRITE(NET2280_DEV_U32, &devreg->int_ack, reg);
814
815
816 P54U_WRITE(NET2280_DEV_U32, &devreg->int_enable,
817 cpu_to_le32(ISL38XX_INT_IDENT_INIT));
818
819 P54U_WRITE(NET2280_BRG_U32, NET2280_IRQSTAT1,
820 cpu_to_le32(NET2280_PCI_INTA_INTERRUPT));
821
822 P54U_WRITE(NET2280_BRG_U32, NET2280_USBIRQENB1,
823 cpu_to_le32(NET2280_PCI_INTA_INTERRUPT_ENABLE |
824 NET2280_USB_INTERRUPT_ENABLE));
825
826 P54U_WRITE(NET2280_DEV_U32, &devreg->dev_int,
827 cpu_to_le32(ISL38XX_DEV_INT_RESET));
828
829 err = usb_interrupt_msg(priv->udev,
830 usb_rcvbulkpipe(priv->udev, P54U_PIPE_INT),
831 buf, sizeof(__le32), &alen, 1000);
832 if (err || alen != sizeof(__le32))
833 goto fail;
834
835 P54U_READ(NET2280_DEV_U32, &devreg->int_ident);
836 P54U_WRITE(NET2280_DEV_U32, &devreg->int_ack, reg);
837
838 if (!(reg & cpu_to_le32(ISL38XX_INT_IDENT_INIT)))
839 err = -EINVAL;
840
841 P54U_WRITE(NET2280_BRG_U32, NET2280_USBIRQENB1, 0);
842 P54U_WRITE(NET2280_BRG_U32, NET2280_IRQSTAT1,
843 cpu_to_le32(NET2280_PCI_INTA_INTERRUPT));
844
845#undef P54U_WRITE
846#undef P54U_READ
847
848fail:
849 kfree(buf);
850 return err;
851}
852
853static int p54_find_type(struct p54u_priv *priv)
854{
855 int i;
856
857 for (i = 0; i < __NUM_P54U_HWTYPES; i++)
858 if (p54u_fwlist[i].type == priv->hw_type)
859 break;
860 if (i == __NUM_P54U_HWTYPES)
861 return -EOPNOTSUPP;
862
863 return i;
864}
865
866static int p54u_start_ops(struct p54u_priv *priv)
867{
868 struct ieee80211_hw *dev = priv->common.hw;
869 int ret;
870
871 ret = p54_parse_firmware(dev, priv->fw);
872 if (ret)
873 goto err_out;
874
875 ret = p54_find_type(priv);
876 if (ret < 0)
877 goto err_out;
878
879 if (priv->common.fw_interface != p54u_fwlist[ret].intf) {
880 dev_err(&priv->udev->dev, "wrong firmware, please get "
881 "a firmware for \"%s\" and try again.\n",
882 p54u_fwlist[ret].hw);
883 ret = -ENODEV;
884 goto err_out;
885 }
886
887 ret = priv->upload_fw(dev);
888 if (ret)
889 goto err_out;
890
891 ret = p54u_open(dev);
892 if (ret)
893 goto err_out;
894
895 ret = p54_read_eeprom(dev);
896 if (ret)
897 goto err_stop;
898
899 p54u_stop(dev);
900
901 ret = p54_register_common(dev, &priv->udev->dev);
902 if (ret)
903 goto err_stop;
904
905 return 0;
906
907err_stop:
908 p54u_stop(dev);
909
910err_out:
911
912
913
914
915 return ret;
916}
917
918static void p54u_load_firmware_cb(const struct firmware *firmware,
919 void *context)
920{
921 struct p54u_priv *priv = context;
922 struct usb_device *udev = priv->udev;
923 struct usb_interface *intf = priv->intf;
924 int err;
925
926 if (firmware) {
927 priv->fw = firmware;
928 err = p54u_start_ops(priv);
929 } else {
930 err = -ENOENT;
931 dev_err(&udev->dev, "Firmware not found.\n");
932 }
933
934 complete(&priv->fw_wait_load);
935
936
937
938
939 priv = NULL;
940
941 if (err) {
942 dev_err(&intf->dev, "failed to initialize device (%d)\n", err);
943
944 usb_lock_device(udev);
945 usb_driver_release_interface(&p54u_driver, intf);
946 usb_unlock_device(udev);
947 }
948
949 usb_put_intf(intf);
950}
951
952static int p54u_load_firmware(struct ieee80211_hw *dev,
953 struct usb_interface *intf)
954{
955 struct usb_device *udev = interface_to_usbdev(intf);
956 struct p54u_priv *priv = dev->priv;
957 struct device *device = &udev->dev;
958 int err, i;
959
960 BUILD_BUG_ON(ARRAY_SIZE(p54u_fwlist) != __NUM_P54U_HWTYPES);
961
962 init_completion(&priv->fw_wait_load);
963 i = p54_find_type(priv);
964 if (i < 0)
965 return i;
966
967 dev_info(&priv->udev->dev, "Loading firmware file %s\n",
968 p54u_fwlist[i].fw);
969
970 usb_get_intf(intf);
971 err = request_firmware_nowait(THIS_MODULE, 1, p54u_fwlist[i].fw,
972 device, GFP_KERNEL, priv,
973 p54u_load_firmware_cb);
974 if (err) {
975 dev_err(&priv->udev->dev, "(p54usb) cannot load firmware %s "
976 "(%d)!\n", p54u_fwlist[i].fw, err);
977 usb_put_intf(intf);
978 }
979
980 return err;
981}
982
983static int p54u_probe(struct usb_interface *intf,
984 const struct usb_device_id *id)
985{
986 struct usb_device *udev = interface_to_usbdev(intf);
987 struct ieee80211_hw *dev;
988 struct p54u_priv *priv;
989 int err;
990 unsigned int i, recognized_pipes;
991
992 dev = p54_init_common(sizeof(*priv));
993
994 if (!dev) {
995 dev_err(&udev->dev, "(p54usb) ieee80211 alloc failed\n");
996 return -ENOMEM;
997 }
998
999 priv = dev->priv;
1000 priv->hw_type = P54U_INVALID_HW;
1001
1002 SET_IEEE80211_DEV(dev, &intf->dev);
1003 usb_set_intfdata(intf, dev);
1004 priv->udev = udev;
1005 priv->intf = intf;
1006 skb_queue_head_init(&priv->rx_queue);
1007 init_usb_anchor(&priv->submitted);
1008
1009
1010
1011 i = intf->altsetting->desc.bNumEndpoints;
1012 recognized_pipes = 0;
1013 while (i--) {
1014 switch (intf->altsetting->endpoint[i].desc.bEndpointAddress) {
1015 case P54U_PIPE_DATA:
1016 case P54U_PIPE_MGMT:
1017 case P54U_PIPE_BRG:
1018 case P54U_PIPE_DEV:
1019 case P54U_PIPE_DATA | USB_DIR_IN:
1020 case P54U_PIPE_MGMT | USB_DIR_IN:
1021 case P54U_PIPE_BRG | USB_DIR_IN:
1022 case P54U_PIPE_DEV | USB_DIR_IN:
1023 case P54U_PIPE_INT | USB_DIR_IN:
1024 recognized_pipes++;
1025 }
1026 }
1027 priv->common.open = p54u_open;
1028 priv->common.stop = p54u_stop;
1029 if (recognized_pipes < P54U_PIPE_NUMBER) {
1030#ifdef CONFIG_PM
1031
1032 udev->reset_resume = 1;
1033#endif
1034 err = p54u_device_reset(dev);
1035
1036 priv->hw_type = P54U_3887;
1037 dev->extra_tx_headroom += sizeof(struct lm87_tx_hdr);
1038 priv->common.tx_hdr_len = sizeof(struct lm87_tx_hdr);
1039 priv->common.tx = p54u_tx_lm87;
1040 priv->upload_fw = p54u_upload_firmware_3887;
1041 } else {
1042 priv->hw_type = P54U_NET2280;
1043 dev->extra_tx_headroom += sizeof(struct net2280_tx_hdr);
1044 priv->common.tx_hdr_len = sizeof(struct net2280_tx_hdr);
1045 priv->common.tx = p54u_tx_net2280;
1046 priv->upload_fw = p54u_upload_firmware_net2280;
1047 }
1048 err = p54u_load_firmware(dev, intf);
1049 if (err)
1050 p54_free_common(dev);
1051 return err;
1052}
1053
1054static void p54u_disconnect(struct usb_interface *intf)
1055{
1056 struct ieee80211_hw *dev = usb_get_intfdata(intf);
1057 struct p54u_priv *priv;
1058
1059 if (!dev)
1060 return;
1061
1062 priv = dev->priv;
1063 wait_for_completion(&priv->fw_wait_load);
1064 p54_unregister_common(dev);
1065
1066 release_firmware(priv->fw);
1067 p54_free_common(dev);
1068}
1069
1070static int p54u_pre_reset(struct usb_interface *intf)
1071{
1072 struct ieee80211_hw *dev = usb_get_intfdata(intf);
1073
1074 if (!dev)
1075 return -ENODEV;
1076
1077 p54u_stop(dev);
1078 return 0;
1079}
1080
1081static int p54u_resume(struct usb_interface *intf)
1082{
1083 struct ieee80211_hw *dev = usb_get_intfdata(intf);
1084 struct p54u_priv *priv;
1085
1086 if (!dev)
1087 return -ENODEV;
1088
1089 priv = dev->priv;
1090 if (unlikely(!(priv->upload_fw && priv->fw)))
1091 return 0;
1092
1093 return priv->upload_fw(dev);
1094}
1095
1096static int p54u_post_reset(struct usb_interface *intf)
1097{
1098 struct ieee80211_hw *dev = usb_get_intfdata(intf);
1099 struct p54u_priv *priv;
1100 int err;
1101
1102 err = p54u_resume(intf);
1103 if (err)
1104 return err;
1105
1106
1107 priv = dev->priv;
1108 if (priv->common.mode != NL80211_IFTYPE_UNSPECIFIED)
1109 ieee80211_restart_hw(dev);
1110
1111 return 0;
1112}
1113
1114#ifdef CONFIG_PM
1115
1116static int p54u_suspend(struct usb_interface *intf, pm_message_t message)
1117{
1118 return p54u_pre_reset(intf);
1119}
1120
1121#endif
1122
1123static struct usb_driver p54u_driver = {
1124 .name = "p54usb",
1125 .id_table = p54u_table,
1126 .probe = p54u_probe,
1127 .disconnect = p54u_disconnect,
1128 .pre_reset = p54u_pre_reset,
1129 .post_reset = p54u_post_reset,
1130#ifdef CONFIG_PM
1131 .suspend = p54u_suspend,
1132 .resume = p54u_resume,
1133 .reset_resume = p54u_resume,
1134#endif
1135 .soft_unbind = 1,
1136 .disable_hub_initiated_lpm = 1,
1137};
1138
1139module_usb_driver(p54u_driver);
1140
