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6
7#define FC_LOG_PREFIX "flexcop_usb"
8#include "flexcop-usb.h"
9#include "flexcop-common.h"
10
11
12#define DRIVER_VERSION "0.1"
13#define DRIVER_NAME "Technisat/B2C2 FlexCop II/IIb/III Digital TV USB Driver"
14#define DRIVER_AUTHOR "Patrick Boettcher <patrick.boettcher@posteo.de>"
15
16
17#ifdef CONFIG_DVB_B2C2_FLEXCOP_DEBUG
18#define dprintk(level,args...) \
19 do { if ((debug & level)) printk(args); } while (0)
20
21#define debug_dump(b, l, method) do {\
22 int i; \
23 for (i = 0; i < l; i++) \
24 method("%02x ", b[i]); \
25 method("\n"); \
26} while (0)
27
28#define DEBSTATUS ""
29#else
30#define dprintk(level, args...)
31#define debug_dump(b, l, method)
32#define DEBSTATUS " (debugging is not enabled)"
33#endif
34
35static int debug;
36module_param(debug, int, 0644);
37MODULE_PARM_DESC(debug, "set debugging level (1=info,ts=2,ctrl=4,i2c=8,v8mem=16 (or-able))." DEBSTATUS);
38#undef DEBSTATUS
39
40#define deb_info(args...) dprintk(0x01, args)
41#define deb_ts(args...) dprintk(0x02, args)
42#define deb_ctrl(args...) dprintk(0x04, args)
43#define deb_i2c(args...) dprintk(0x08, args)
44#define deb_v8(args...) dprintk(0x10, args)
45
46
47
48
49
50
51
52
53
54
55#define B2C2_FLEX_PCIOFFSET_TO_INTERNALADDR(usPCI) (u8) \
56 (((usPCI >> 2) & 0x07) + ((usPCI >> 4) & 0x70))
57#define B2C2_FLEX_INTERNALADDR_TO_PCIOFFSET(ucAddr) (u16) \
58 (((ucAddr & 0x07) << 2) + ((ucAddr & 0x70) << 4))
59
60
61
62
63
64
65
66
67
68
69static int flexcop_usb_readwrite_dw(struct flexcop_device *fc, u16 wRegOffsPCI, u32 *val, u8 read)
70{
71 struct flexcop_usb *fc_usb = fc->bus_specific;
72 u8 request = read ? B2C2_USB_READ_REG : B2C2_USB_WRITE_REG;
73 u8 request_type = (read ? USB_DIR_IN : USB_DIR_OUT) | USB_TYPE_VENDOR;
74 u8 wAddress = B2C2_FLEX_PCIOFFSET_TO_INTERNALADDR(wRegOffsPCI) |
75 (read ? 0x80 : 0);
76 int ret;
77
78 mutex_lock(&fc_usb->data_mutex);
79 if (!read)
80 memcpy(fc_usb->data, val, sizeof(*val));
81
82 ret = usb_control_msg(fc_usb->udev,
83 read ? B2C2_USB_CTRL_PIPE_IN : B2C2_USB_CTRL_PIPE_OUT,
84 request,
85 request_type,
86 wAddress,
87 0,
88 fc_usb->data,
89 sizeof(u32),
90 B2C2_WAIT_FOR_OPERATION_RDW * HZ);
91
92 if (ret != sizeof(u32)) {
93 err("error while %s dword from %d (%d).", read ? "reading" :
94 "writing", wAddress, wRegOffsPCI);
95 if (ret >= 0)
96 ret = -EIO;
97 }
98
99 if (read && ret >= 0)
100 memcpy(val, fc_usb->data, sizeof(*val));
101 mutex_unlock(&fc_usb->data_mutex);
102
103 return ret;
104}
105
106
107
108static int flexcop_usb_v8_memory_req(struct flexcop_usb *fc_usb,
109 flexcop_usb_request_t req, u8 page, u16 wAddress,
110 u8 *pbBuffer, u32 buflen)
111{
112 u8 request_type = USB_TYPE_VENDOR;
113 u16 wIndex;
114 int nWaitTime, pipe, ret;
115 wIndex = page << 8;
116
117 if (buflen > sizeof(fc_usb->data)) {
118 err("Buffer size bigger than max URB control message\n");
119 return -EIO;
120 }
121
122 switch (req) {
123 case B2C2_USB_READ_V8_MEM:
124 nWaitTime = B2C2_WAIT_FOR_OPERATION_V8READ;
125 request_type |= USB_DIR_IN;
126 pipe = B2C2_USB_CTRL_PIPE_IN;
127 break;
128 case B2C2_USB_WRITE_V8_MEM:
129 wIndex |= pbBuffer[0];
130 request_type |= USB_DIR_OUT;
131 nWaitTime = B2C2_WAIT_FOR_OPERATION_V8WRITE;
132 pipe = B2C2_USB_CTRL_PIPE_OUT;
133 break;
134 case B2C2_USB_FLASH_BLOCK:
135 request_type |= USB_DIR_OUT;
136 nWaitTime = B2C2_WAIT_FOR_OPERATION_V8FLASH;
137 pipe = B2C2_USB_CTRL_PIPE_OUT;
138 break;
139 default:
140 deb_info("unsupported request for v8_mem_req %x.\n", req);
141 return -EINVAL;
142 }
143 deb_v8("v8mem: %02x %02x %04x %04x, len: %d\n", request_type, req,
144 wAddress, wIndex, buflen);
145
146 mutex_lock(&fc_usb->data_mutex);
147
148 if ((request_type & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT)
149 memcpy(fc_usb->data, pbBuffer, buflen);
150
151 ret = usb_control_msg(fc_usb->udev, pipe,
152 req,
153 request_type,
154 wAddress,
155 wIndex,
156 fc_usb->data,
157 buflen,
158 nWaitTime * HZ);
159 if (ret != buflen)
160 ret = -EIO;
161
162 if (ret >= 0) {
163 ret = 0;
164 if ((request_type & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN)
165 memcpy(pbBuffer, fc_usb->data, buflen);
166 }
167
168 mutex_unlock(&fc_usb->data_mutex);
169
170 debug_dump(pbBuffer, ret, deb_v8);
171 return ret;
172}
173
174#define bytes_left_to_read_on_page(paddr,buflen) \
175 ((V8_MEMORY_PAGE_SIZE - (paddr & V8_MEMORY_PAGE_MASK)) > buflen \
176 ? buflen : (V8_MEMORY_PAGE_SIZE - (paddr & V8_MEMORY_PAGE_MASK)))
177
178static int flexcop_usb_memory_req(struct flexcop_usb *fc_usb,
179 flexcop_usb_request_t req, flexcop_usb_mem_page_t page_start,
180 u32 addr, int extended, u8 *buf, u32 len)
181{
182 int i,ret = 0;
183 u16 wMax;
184 u32 pagechunk = 0;
185
186 switch(req) {
187 case B2C2_USB_READ_V8_MEM:
188 wMax = USB_MEM_READ_MAX;
189 break;
190 case B2C2_USB_WRITE_V8_MEM:
191 wMax = USB_MEM_WRITE_MAX;
192 break;
193 case B2C2_USB_FLASH_BLOCK:
194 wMax = USB_FLASH_MAX;
195 break;
196 default:
197 return -EINVAL;
198 break;
199 }
200 for (i = 0; i < len;) {
201 pagechunk =
202 wMax < bytes_left_to_read_on_page(addr, len) ?
203 wMax :
204 bytes_left_to_read_on_page(addr, len);
205 deb_info("%x\n",
206 (addr & V8_MEMORY_PAGE_MASK) |
207 (V8_MEMORY_EXTENDED*extended));
208
209 ret = flexcop_usb_v8_memory_req(fc_usb, req,
210 page_start + (addr / V8_MEMORY_PAGE_SIZE),
211 (addr & V8_MEMORY_PAGE_MASK) |
212 (V8_MEMORY_EXTENDED*extended),
213 &buf[i], pagechunk);
214
215 if (ret < 0)
216 return ret;
217 addr += pagechunk;
218 len -= pagechunk;
219 }
220 return 0;
221}
222
223static int flexcop_usb_get_mac_addr(struct flexcop_device *fc, int extended)
224{
225 return flexcop_usb_memory_req(fc->bus_specific, B2C2_USB_READ_V8_MEM,
226 V8_MEMORY_PAGE_FLASH, 0x1f010, 1,
227 fc->dvb_adapter.proposed_mac, 6);
228}
229
230
231static int flexcop_usb_i2c_req(struct flexcop_i2c_adapter *i2c,
232 flexcop_usb_request_t req, flexcop_usb_i2c_function_t func,
233 u8 chipaddr, u8 addr, u8 *buf, u8 buflen)
234{
235 struct flexcop_usb *fc_usb = i2c->fc->bus_specific;
236 u16 wValue, wIndex;
237 int nWaitTime, pipe, ret;
238 u8 request_type = USB_TYPE_VENDOR;
239
240 if (buflen > sizeof(fc_usb->data)) {
241 err("Buffer size bigger than max URB control message\n");
242 return -EIO;
243 }
244
245 switch (func) {
246 case USB_FUNC_I2C_WRITE:
247 case USB_FUNC_I2C_MULTIWRITE:
248 case USB_FUNC_I2C_REPEATWRITE:
249
250 case USB_FUNC_I2C_CHECKWRITE:
251 pipe = B2C2_USB_CTRL_PIPE_OUT;
252 nWaitTime = 2;
253 request_type |= USB_DIR_OUT;
254 break;
255 case USB_FUNC_I2C_READ:
256 case USB_FUNC_I2C_REPEATREAD:
257 pipe = B2C2_USB_CTRL_PIPE_IN;
258 nWaitTime = 2;
259 request_type |= USB_DIR_IN;
260 break;
261 default:
262 deb_info("unsupported function for i2c_req %x\n", func);
263 return -EINVAL;
264 }
265 wValue = (func << 8) | (i2c->port << 4);
266 wIndex = (chipaddr << 8 ) | addr;
267
268 deb_i2c("i2c %2d: %02x %02x %02x %02x %02x %02x\n",
269 func, request_type, req,
270 wValue & 0xff, wValue >> 8,
271 wIndex & 0xff, wIndex >> 8);
272
273 mutex_lock(&fc_usb->data_mutex);
274
275 if ((request_type & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT)
276 memcpy(fc_usb->data, buf, buflen);
277
278 ret = usb_control_msg(fc_usb->udev, pipe,
279 req,
280 request_type,
281 wValue,
282 wIndex,
283 fc_usb->data,
284 buflen,
285 nWaitTime * HZ);
286
287 if (ret != buflen)
288 ret = -EIO;
289
290 if (ret >= 0) {
291 ret = 0;
292 if ((request_type & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN)
293 memcpy(buf, fc_usb->data, buflen);
294 }
295
296 mutex_unlock(&fc_usb->data_mutex);
297
298 return 0;
299}
300
301
302
303static flexcop_ibi_value flexcop_usb_read_ibi_reg(struct flexcop_device *fc,
304 flexcop_ibi_register reg)
305{
306 flexcop_ibi_value val;
307 val.raw = 0;
308 flexcop_usb_readwrite_dw(fc, reg, &val.raw, 1);
309 return val;
310}
311
312static int flexcop_usb_write_ibi_reg(struct flexcop_device *fc,
313 flexcop_ibi_register reg, flexcop_ibi_value val)
314{
315 return flexcop_usb_readwrite_dw(fc, reg, &val.raw, 0);
316}
317
318static int flexcop_usb_i2c_request(struct flexcop_i2c_adapter *i2c,
319 flexcop_access_op_t op, u8 chipaddr, u8 addr, u8 *buf, u16 len)
320{
321 if (op == FC_READ)
322 return flexcop_usb_i2c_req(i2c, B2C2_USB_I2C_REQUEST,
323 USB_FUNC_I2C_READ, chipaddr, addr, buf, len);
324 else
325 return flexcop_usb_i2c_req(i2c, B2C2_USB_I2C_REQUEST,
326 USB_FUNC_I2C_WRITE, chipaddr, addr, buf, len);
327}
328
329static void flexcop_usb_process_frame(struct flexcop_usb *fc_usb,
330 u8 *buffer, int buffer_length)
331{
332 u8 *b;
333 int l;
334
335 deb_ts("tmp_buffer_length=%d, buffer_length=%d\n",
336 fc_usb->tmp_buffer_length, buffer_length);
337
338 if (fc_usb->tmp_buffer_length > 0) {
339 memcpy(fc_usb->tmp_buffer+fc_usb->tmp_buffer_length, buffer,
340 buffer_length);
341 fc_usb->tmp_buffer_length += buffer_length;
342 b = fc_usb->tmp_buffer;
343 l = fc_usb->tmp_buffer_length;
344 } else {
345 b=buffer;
346 l=buffer_length;
347 }
348
349 while (l >= 190) {
350 if (*b == 0xff) {
351 switch (*(b+1) & 0x03) {
352 case 0x01:
353 if (*(b+2) == 0x47)
354 flexcop_pass_dmx_packets(
355 fc_usb->fc_dev, b+2, 1);
356 else
357 deb_ts("not ts packet %*ph\n", 4, b+2);
358 b += 190;
359 l -= 190;
360 break;
361 default:
362 deb_ts("wrong packet type\n");
363 l = 0;
364 break;
365 }
366 } else {
367 deb_ts("wrong header\n");
368 l = 0;
369 }
370 }
371
372 if (l>0)
373 memcpy(fc_usb->tmp_buffer, b, l);
374 fc_usb->tmp_buffer_length = l;
375}
376
377static void flexcop_usb_urb_complete(struct urb *urb)
378{
379 struct flexcop_usb *fc_usb = urb->context;
380 int i;
381
382 if (urb->actual_length > 0)
383 deb_ts("urb completed, bufsize: %d actlen; %d\n",
384 urb->transfer_buffer_length, urb->actual_length);
385
386 for (i = 0; i < urb->number_of_packets; i++) {
387 if (urb->iso_frame_desc[i].status < 0) {
388 err("iso frame descriptor %d has an error: %d\n", i,
389 urb->iso_frame_desc[i].status);
390 } else
391 if (urb->iso_frame_desc[i].actual_length > 0) {
392 deb_ts("passed %d bytes to the demux\n",
393 urb->iso_frame_desc[i].actual_length);
394
395 flexcop_usb_process_frame(fc_usb,
396 urb->transfer_buffer +
397 urb->iso_frame_desc[i].offset,
398 urb->iso_frame_desc[i].actual_length);
399 }
400 urb->iso_frame_desc[i].status = 0;
401 urb->iso_frame_desc[i].actual_length = 0;
402 }
403 usb_submit_urb(urb,GFP_ATOMIC);
404}
405
406static int flexcop_usb_stream_control(struct flexcop_device *fc, int onoff)
407{
408
409 return 0;
410}
411
412static void flexcop_usb_transfer_exit(struct flexcop_usb *fc_usb)
413{
414 int i;
415 for (i = 0; i < B2C2_USB_NUM_ISO_URB; i++)
416 if (fc_usb->iso_urb[i] != NULL) {
417 deb_ts("unlinking/killing urb no. %d\n",i);
418 usb_kill_urb(fc_usb->iso_urb[i]);
419 usb_free_urb(fc_usb->iso_urb[i]);
420 }
421
422 if (fc_usb->iso_buffer != NULL)
423 usb_free_coherent(fc_usb->udev,
424 fc_usb->buffer_size, fc_usb->iso_buffer,
425 fc_usb->dma_addr);
426}
427
428static int flexcop_usb_transfer_init(struct flexcop_usb *fc_usb)
429{
430 u16 frame_size = le16_to_cpu(
431 fc_usb->uintf->cur_altsetting->endpoint[0].desc.wMaxPacketSize);
432 int bufsize = B2C2_USB_NUM_ISO_URB * B2C2_USB_FRAMES_PER_ISO *
433 frame_size, i, j, ret;
434 int buffer_offset = 0;
435
436 deb_ts("creating %d iso-urbs with %d frames each of %d bytes size = %d.\n",
437 B2C2_USB_NUM_ISO_URB,
438 B2C2_USB_FRAMES_PER_ISO, frame_size, bufsize);
439
440 fc_usb->iso_buffer = usb_alloc_coherent(fc_usb->udev,
441 bufsize, GFP_KERNEL, &fc_usb->dma_addr);
442 if (fc_usb->iso_buffer == NULL)
443 return -ENOMEM;
444
445 memset(fc_usb->iso_buffer, 0, bufsize);
446 fc_usb->buffer_size = bufsize;
447
448
449 for (i = 0; i < B2C2_USB_NUM_ISO_URB; i++) {
450 fc_usb->iso_urb[i] = usb_alloc_urb(B2C2_USB_FRAMES_PER_ISO,
451 GFP_ATOMIC);
452 if (fc_usb->iso_urb[i] == NULL) {
453 ret = -ENOMEM;
454 goto urb_error;
455 }
456 }
457
458
459 for (i = 0; i < B2C2_USB_NUM_ISO_URB; i++) {
460 int frame_offset = 0;
461 struct urb *urb = fc_usb->iso_urb[i];
462 deb_ts("initializing and submitting urb no. %d (buf_offset: %d).\n",
463 i, buffer_offset);
464
465 urb->dev = fc_usb->udev;
466 urb->context = fc_usb;
467 urb->complete = flexcop_usb_urb_complete;
468 urb->pipe = B2C2_USB_DATA_PIPE;
469 urb->transfer_flags = URB_ISO_ASAP;
470 urb->interval = 1;
471 urb->number_of_packets = B2C2_USB_FRAMES_PER_ISO;
472 urb->transfer_buffer_length = frame_size * B2C2_USB_FRAMES_PER_ISO;
473 urb->transfer_buffer = fc_usb->iso_buffer + buffer_offset;
474
475 buffer_offset += frame_size * B2C2_USB_FRAMES_PER_ISO;
476 for (j = 0; j < B2C2_USB_FRAMES_PER_ISO; j++) {
477 deb_ts("urb no: %d, frame: %d, frame_offset: %d\n",
478 i, j, frame_offset);
479 urb->iso_frame_desc[j].offset = frame_offset;
480 urb->iso_frame_desc[j].length = frame_size;
481 frame_offset += frame_size;
482 }
483
484 if ((ret = usb_submit_urb(fc_usb->iso_urb[i],GFP_ATOMIC))) {
485 err("submitting urb %d failed with %d.", i, ret);
486 goto urb_error;
487 }
488 deb_ts("submitted urb no. %d.\n",i);
489 }
490
491
492 flexcop_sram_set_dest(fc_usb->fc_dev, FC_SRAM_DEST_MEDIA |
493 FC_SRAM_DEST_NET | FC_SRAM_DEST_CAO | FC_SRAM_DEST_CAI,
494 FC_SRAM_DEST_TARGET_WAN_USB);
495 flexcop_wan_set_speed(fc_usb->fc_dev, FC_WAN_SPEED_8MBITS);
496 flexcop_sram_ctrl(fc_usb->fc_dev, 1, 1, 1);
497 return 0;
498
499urb_error:
500 flexcop_usb_transfer_exit(fc_usb);
501 return ret;
502}
503
504static int flexcop_usb_init(struct flexcop_usb *fc_usb)
505{
506
507 usb_set_interface(fc_usb->udev,0,1);
508 switch (fc_usb->udev->speed) {
509 case USB_SPEED_LOW:
510 err("cannot handle USB speed because it is too slow.");
511 return -ENODEV;
512 break;
513 case USB_SPEED_FULL:
514 info("running at FULL speed.");
515 break;
516 case USB_SPEED_HIGH:
517 info("running at HIGH speed.");
518 break;
519 case USB_SPEED_UNKNOWN:
520 default:
521 err("cannot handle USB speed because it is unknown.");
522 return -ENODEV;
523 }
524 usb_set_intfdata(fc_usb->uintf, fc_usb);
525 return 0;
526}
527
528static void flexcop_usb_exit(struct flexcop_usb *fc_usb)
529{
530 usb_set_intfdata(fc_usb->uintf, NULL);
531}
532
533static int flexcop_usb_probe(struct usb_interface *intf,
534 const struct usb_device_id *id)
535{
536 struct usb_device *udev = interface_to_usbdev(intf);
537 struct flexcop_usb *fc_usb = NULL;
538 struct flexcop_device *fc = NULL;
539 int ret;
540
541 if ((fc = flexcop_device_kmalloc(sizeof(struct flexcop_usb))) == NULL) {
542 err("out of memory\n");
543 return -ENOMEM;
544 }
545
546
547 fc_usb = fc->bus_specific;
548 fc_usb->fc_dev = fc;
549 mutex_init(&fc_usb->data_mutex);
550
551 fc->read_ibi_reg = flexcop_usb_read_ibi_reg;
552 fc->write_ibi_reg = flexcop_usb_write_ibi_reg;
553 fc->i2c_request = flexcop_usb_i2c_request;
554 fc->get_mac_addr = flexcop_usb_get_mac_addr;
555
556 fc->stream_control = flexcop_usb_stream_control;
557
558 fc->pid_filtering = 1;
559 fc->bus_type = FC_USB;
560
561 fc->dev = &udev->dev;
562 fc->owner = THIS_MODULE;
563
564
565 fc_usb->udev = udev;
566 fc_usb->uintf = intf;
567 if ((ret = flexcop_usb_init(fc_usb)) != 0)
568 goto err_kfree;
569
570
571 if ((ret = flexcop_device_initialize(fc)) != 0)
572 goto err_usb_exit;
573
574
575 if ((ret = flexcop_usb_transfer_init(fc_usb)) != 0)
576 goto err_fc_exit;
577
578 info("%s successfully initialized and connected.", DRIVER_NAME);
579 return 0;
580
581err_fc_exit:
582 flexcop_device_exit(fc);
583err_usb_exit:
584 flexcop_usb_exit(fc_usb);
585err_kfree:
586 flexcop_device_kfree(fc);
587 return ret;
588}
589
590static void flexcop_usb_disconnect(struct usb_interface *intf)
591{
592 struct flexcop_usb *fc_usb = usb_get_intfdata(intf);
593 flexcop_usb_transfer_exit(fc_usb);
594 flexcop_device_exit(fc_usb->fc_dev);
595 flexcop_usb_exit(fc_usb);
596 flexcop_device_kfree(fc_usb->fc_dev);
597 info("%s successfully deinitialized and disconnected.", DRIVER_NAME);
598}
599
600static const struct usb_device_id flexcop_usb_table[] = {
601 { USB_DEVICE(0x0af7, 0x0101) },
602 { }
603};
604MODULE_DEVICE_TABLE (usb, flexcop_usb_table);
605
606
607static struct usb_driver flexcop_usb_driver = {
608 .name = "b2c2_flexcop_usb",
609 .probe = flexcop_usb_probe,
610 .disconnect = flexcop_usb_disconnect,
611 .id_table = flexcop_usb_table,
612};
613
614module_usb_driver(flexcop_usb_driver);
615
616MODULE_AUTHOR(DRIVER_AUTHOR);
617MODULE_DESCRIPTION(DRIVER_NAME);
618MODULE_LICENSE("GPL");
619
