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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...) no_printk(args)
31#define debug_dump(b, l, method) do { } while (0)
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 }
199 for (i = 0; i < len;) {
200 pagechunk =
201 wMax < bytes_left_to_read_on_page(addr, len) ?
202 wMax :
203 bytes_left_to_read_on_page(addr, len);
204 deb_info("%x\n",
205 (addr & V8_MEMORY_PAGE_MASK) |
206 (V8_MEMORY_EXTENDED*extended));
207
208 ret = flexcop_usb_v8_memory_req(fc_usb, req,
209 page_start + (addr / V8_MEMORY_PAGE_SIZE),
210 (addr & V8_MEMORY_PAGE_MASK) |
211 (V8_MEMORY_EXTENDED*extended),
212 &buf[i], pagechunk);
213
214 if (ret < 0)
215 return ret;
216 addr += pagechunk;
217 len -= pagechunk;
218 }
219 return 0;
220}
221
222static int flexcop_usb_get_mac_addr(struct flexcop_device *fc, int extended)
223{
224 return flexcop_usb_memory_req(fc->bus_specific, B2C2_USB_READ_V8_MEM,
225 V8_MEMORY_PAGE_FLASH, 0x1f010, 1,
226 fc->dvb_adapter.proposed_mac, 6);
227}
228
229
230static int flexcop_usb_i2c_req(struct flexcop_i2c_adapter *i2c,
231 flexcop_usb_request_t req, flexcop_usb_i2c_function_t func,
232 u8 chipaddr, u8 addr, u8 *buf, u8 buflen)
233{
234 struct flexcop_usb *fc_usb = i2c->fc->bus_specific;
235 u16 wValue, wIndex;
236 int nWaitTime, pipe, ret;
237 u8 request_type = USB_TYPE_VENDOR;
238
239 if (buflen > sizeof(fc_usb->data)) {
240 err("Buffer size bigger than max URB control message\n");
241 return -EIO;
242 }
243
244 switch (func) {
245 case USB_FUNC_I2C_WRITE:
246 case USB_FUNC_I2C_MULTIWRITE:
247 case USB_FUNC_I2C_REPEATWRITE:
248
249 case USB_FUNC_I2C_CHECKWRITE:
250 pipe = B2C2_USB_CTRL_PIPE_OUT;
251 nWaitTime = 2;
252 request_type |= USB_DIR_OUT;
253 break;
254 case USB_FUNC_I2C_READ:
255 case USB_FUNC_I2C_REPEATREAD:
256 pipe = B2C2_USB_CTRL_PIPE_IN;
257 nWaitTime = 2;
258 request_type |= USB_DIR_IN;
259 break;
260 default:
261 deb_info("unsupported function for i2c_req %x\n", func);
262 return -EINVAL;
263 }
264 wValue = (func << 8) | (i2c->port << 4);
265 wIndex = (chipaddr << 8 ) | addr;
266
267 deb_i2c("i2c %2d: %02x %02x %02x %02x %02x %02x\n",
268 func, request_type, req,
269 wValue & 0xff, wValue >> 8,
270 wIndex & 0xff, wIndex >> 8);
271
272 mutex_lock(&fc_usb->data_mutex);
273
274 if ((request_type & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT)
275 memcpy(fc_usb->data, buf, buflen);
276
277 ret = usb_control_msg(fc_usb->udev, pipe,
278 req,
279 request_type,
280 wValue,
281 wIndex,
282 fc_usb->data,
283 buflen,
284 nWaitTime * HZ);
285
286 if (ret != buflen)
287 ret = -EIO;
288
289 if (ret >= 0) {
290 ret = 0;
291 if ((request_type & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN)
292 memcpy(buf, fc_usb->data, buflen);
293 }
294
295 mutex_unlock(&fc_usb->data_mutex);
296
297 return ret;
298}
299
300
301
302static flexcop_ibi_value flexcop_usb_read_ibi_reg(struct flexcop_device *fc,
303 flexcop_ibi_register reg)
304{
305 flexcop_ibi_value val;
306 val.raw = 0;
307 flexcop_usb_readwrite_dw(fc, reg, &val.raw, 1);
308 return val;
309}
310
311static int flexcop_usb_write_ibi_reg(struct flexcop_device *fc,
312 flexcop_ibi_register reg, flexcop_ibi_value val)
313{
314 return flexcop_usb_readwrite_dw(fc, reg, &val.raw, 0);
315}
316
317static int flexcop_usb_i2c_request(struct flexcop_i2c_adapter *i2c,
318 flexcop_access_op_t op, u8 chipaddr, u8 addr, u8 *buf, u16 len)
319{
320 if (op == FC_READ)
321 return flexcop_usb_i2c_req(i2c, B2C2_USB_I2C_REQUEST,
322 USB_FUNC_I2C_READ, chipaddr, addr, buf, len);
323 else
324 return flexcop_usb_i2c_req(i2c, B2C2_USB_I2C_REQUEST,
325 USB_FUNC_I2C_WRITE, chipaddr, addr, buf, len);
326}
327
328static void flexcop_usb_process_frame(struct flexcop_usb *fc_usb,
329 u8 *buffer, int buffer_length)
330{
331 u8 *b;
332 int l;
333
334 deb_ts("tmp_buffer_length=%d, buffer_length=%d\n",
335 fc_usb->tmp_buffer_length, buffer_length);
336
337 if (fc_usb->tmp_buffer_length > 0) {
338 memcpy(fc_usb->tmp_buffer+fc_usb->tmp_buffer_length, buffer,
339 buffer_length);
340 fc_usb->tmp_buffer_length += buffer_length;
341 b = fc_usb->tmp_buffer;
342 l = fc_usb->tmp_buffer_length;
343 } else {
344 b=buffer;
345 l=buffer_length;
346 }
347
348 while (l >= 190) {
349 if (*b == 0xff) {
350 switch (*(b+1) & 0x03) {
351 case 0x01:
352 if (*(b+2) == 0x47)
353 flexcop_pass_dmx_packets(
354 fc_usb->fc_dev, b+2, 1);
355 else
356 deb_ts("not ts packet %*ph\n", 4, b+2);
357 b += 190;
358 l -= 190;
359 break;
360 default:
361 deb_ts("wrong packet type\n");
362 l = 0;
363 break;
364 }
365 } else {
366 deb_ts("wrong header\n");
367 l = 0;
368 }
369 }
370
371 if (l>0)
372 memcpy(fc_usb->tmp_buffer, b, l);
373 fc_usb->tmp_buffer_length = l;
374}
375
376static void flexcop_usb_urb_complete(struct urb *urb)
377{
378 struct flexcop_usb *fc_usb = urb->context;
379 int i;
380
381 if (urb->actual_length > 0)
382 deb_ts("urb completed, bufsize: %d actlen; %d\n",
383 urb->transfer_buffer_length, urb->actual_length);
384
385 for (i = 0; i < urb->number_of_packets; i++) {
386 if (urb->iso_frame_desc[i].status < 0) {
387 err("iso frame descriptor %d has an error: %d\n", i,
388 urb->iso_frame_desc[i].status);
389 } else
390 if (urb->iso_frame_desc[i].actual_length > 0) {
391 deb_ts("passed %d bytes to the demux\n",
392 urb->iso_frame_desc[i].actual_length);
393
394 flexcop_usb_process_frame(fc_usb,
395 urb->transfer_buffer +
396 urb->iso_frame_desc[i].offset,
397 urb->iso_frame_desc[i].actual_length);
398 }
399 urb->iso_frame_desc[i].status = 0;
400 urb->iso_frame_desc[i].actual_length = 0;
401 }
402 usb_submit_urb(urb,GFP_ATOMIC);
403}
404
405static int flexcop_usb_stream_control(struct flexcop_device *fc, int onoff)
406{
407
408 return 0;
409}
410
411static void flexcop_usb_transfer_exit(struct flexcop_usb *fc_usb)
412{
413 int i;
414 for (i = 0; i < B2C2_USB_NUM_ISO_URB; i++)
415 if (fc_usb->iso_urb[i] != NULL) {
416 deb_ts("unlinking/killing urb no. %d\n",i);
417 usb_kill_urb(fc_usb->iso_urb[i]);
418 usb_free_urb(fc_usb->iso_urb[i]);
419 }
420
421 usb_free_coherent(fc_usb->udev, fc_usb->buffer_size,
422 fc_usb->iso_buffer, fc_usb->dma_addr);
423
424}
425
426static int flexcop_usb_transfer_init(struct flexcop_usb *fc_usb)
427{
428 u16 frame_size = le16_to_cpu(
429 fc_usb->uintf->cur_altsetting->endpoint[0].desc.wMaxPacketSize);
430 int bufsize = B2C2_USB_NUM_ISO_URB * B2C2_USB_FRAMES_PER_ISO *
431 frame_size, i, j, ret;
432 int buffer_offset = 0;
433
434 deb_ts("creating %d iso-urbs with %d frames each of %d bytes size = %d.\n",
435 B2C2_USB_NUM_ISO_URB,
436 B2C2_USB_FRAMES_PER_ISO, frame_size, bufsize);
437
438 fc_usb->iso_buffer = usb_alloc_coherent(fc_usb->udev,
439 bufsize, GFP_KERNEL, &fc_usb->dma_addr);
440 if (fc_usb->iso_buffer == NULL)
441 return -ENOMEM;
442
443 memset(fc_usb->iso_buffer, 0, bufsize);
444 fc_usb->buffer_size = bufsize;
445
446
447 for (i = 0; i < B2C2_USB_NUM_ISO_URB; i++) {
448 fc_usb->iso_urb[i] = usb_alloc_urb(B2C2_USB_FRAMES_PER_ISO,
449 GFP_ATOMIC);
450 if (fc_usb->iso_urb[i] == NULL) {
451 ret = -ENOMEM;
452 goto urb_error;
453 }
454 }
455
456
457 for (i = 0; i < B2C2_USB_NUM_ISO_URB; i++) {
458 int frame_offset = 0;
459 struct urb *urb = fc_usb->iso_urb[i];
460 deb_ts("initializing and submitting urb no. %d (buf_offset: %d).\n",
461 i, buffer_offset);
462
463 urb->dev = fc_usb->udev;
464 urb->context = fc_usb;
465 urb->complete = flexcop_usb_urb_complete;
466 urb->pipe = B2C2_USB_DATA_PIPE;
467 urb->transfer_flags = URB_ISO_ASAP;
468 urb->interval = 1;
469 urb->number_of_packets = B2C2_USB_FRAMES_PER_ISO;
470 urb->transfer_buffer_length = frame_size * B2C2_USB_FRAMES_PER_ISO;
471 urb->transfer_buffer = fc_usb->iso_buffer + buffer_offset;
472
473 buffer_offset += frame_size * B2C2_USB_FRAMES_PER_ISO;
474 for (j = 0; j < B2C2_USB_FRAMES_PER_ISO; j++) {
475 deb_ts("urb no: %d, frame: %d, frame_offset: %d\n",
476 i, j, frame_offset);
477 urb->iso_frame_desc[j].offset = frame_offset;
478 urb->iso_frame_desc[j].length = frame_size;
479 frame_offset += frame_size;
480 }
481
482 if ((ret = usb_submit_urb(fc_usb->iso_urb[i],GFP_ATOMIC))) {
483 err("submitting urb %d failed with %d.", i, ret);
484 goto urb_error;
485 }
486 deb_ts("submitted urb no. %d.\n",i);
487 }
488
489
490 flexcop_sram_set_dest(fc_usb->fc_dev, FC_SRAM_DEST_MEDIA |
491 FC_SRAM_DEST_NET | FC_SRAM_DEST_CAO | FC_SRAM_DEST_CAI,
492 FC_SRAM_DEST_TARGET_WAN_USB);
493 flexcop_wan_set_speed(fc_usb->fc_dev, FC_WAN_SPEED_8MBITS);
494 flexcop_sram_ctrl(fc_usb->fc_dev, 1, 1, 1);
495 return 0;
496
497urb_error:
498 flexcop_usb_transfer_exit(fc_usb);
499 return ret;
500}
501
502static int flexcop_usb_init(struct flexcop_usb *fc_usb)
503{
504
505 int ret = usb_set_interface(fc_usb->udev, 0, 1);
506
507 if (ret) {
508 err("set interface failed.");
509 return ret;
510 }
511
512 if (fc_usb->uintf->cur_altsetting->desc.bNumEndpoints < 1)
513 return -ENODEV;
514 if (!usb_endpoint_is_isoc_in(&fc_usb->uintf->cur_altsetting->endpoint[1].desc))
515 return -ENODEV;
516
517 switch (fc_usb->udev->speed) {
518 case USB_SPEED_LOW:
519 err("cannot handle USB speed because it is too slow.");
520 return -ENODEV;
521 break;
522 case USB_SPEED_FULL:
523 info("running at FULL speed.");
524 break;
525 case USB_SPEED_HIGH:
526 info("running at HIGH speed.");
527 break;
528 case USB_SPEED_UNKNOWN:
529 default:
530 err("cannot handle USB speed because it is unknown.");
531 return -ENODEV;
532 }
533 usb_set_intfdata(fc_usb->uintf, fc_usb);
534 return 0;
535}
536
537static void flexcop_usb_exit(struct flexcop_usb *fc_usb)
538{
539 usb_set_intfdata(fc_usb->uintf, NULL);
540}
541
542static int flexcop_usb_probe(struct usb_interface *intf,
543 const struct usb_device_id *id)
544{
545 struct usb_device *udev = interface_to_usbdev(intf);
546 struct flexcop_usb *fc_usb = NULL;
547 struct flexcop_device *fc = NULL;
548 int ret;
549
550 if ((fc = flexcop_device_kmalloc(sizeof(struct flexcop_usb))) == NULL) {
551 err("out of memory\n");
552 return -ENOMEM;
553 }
554
555
556 fc_usb = fc->bus_specific;
557 fc_usb->fc_dev = fc;
558 mutex_init(&fc_usb->data_mutex);
559
560 fc->read_ibi_reg = flexcop_usb_read_ibi_reg;
561 fc->write_ibi_reg = flexcop_usb_write_ibi_reg;
562 fc->i2c_request = flexcop_usb_i2c_request;
563 fc->get_mac_addr = flexcop_usb_get_mac_addr;
564
565 fc->stream_control = flexcop_usb_stream_control;
566
567 fc->pid_filtering = 1;
568 fc->bus_type = FC_USB;
569
570 fc->dev = &udev->dev;
571 fc->owner = THIS_MODULE;
572
573
574 fc_usb->udev = udev;
575 fc_usb->uintf = intf;
576 if ((ret = flexcop_usb_init(fc_usb)) != 0)
577 goto err_kfree;
578
579
580 if ((ret = flexcop_device_initialize(fc)) != 0)
581 goto err_usb_exit;
582
583
584 if ((ret = flexcop_usb_transfer_init(fc_usb)) != 0)
585 goto err_fc_exit;
586
587 info("%s successfully initialized and connected.", DRIVER_NAME);
588 return 0;
589
590err_fc_exit:
591 flexcop_device_exit(fc);
592err_usb_exit:
593 flexcop_usb_exit(fc_usb);
594err_kfree:
595 flexcop_device_kfree(fc);
596 return ret;
597}
598
599static void flexcop_usb_disconnect(struct usb_interface *intf)
600{
601 struct flexcop_usb *fc_usb = usb_get_intfdata(intf);
602 flexcop_usb_transfer_exit(fc_usb);
603 flexcop_device_exit(fc_usb->fc_dev);
604 flexcop_usb_exit(fc_usb);
605 flexcop_device_kfree(fc_usb->fc_dev);
606 info("%s successfully deinitialized and disconnected.", DRIVER_NAME);
607}
608
609static const struct usb_device_id flexcop_usb_table[] = {
610 { USB_DEVICE(0x0af7, 0x0101) },
611 { }
612};
613MODULE_DEVICE_TABLE (usb, flexcop_usb_table);
614
615
616static struct usb_driver flexcop_usb_driver = {
617 .name = "b2c2_flexcop_usb",
618 .probe = flexcop_usb_probe,
619 .disconnect = flexcop_usb_disconnect,
620 .id_table = flexcop_usb_table,
621};
622
623module_usb_driver(flexcop_usb_driver);
624
625MODULE_AUTHOR(DRIVER_AUTHOR);
626MODULE_DESCRIPTION(DRIVER_NAME);
627MODULE_LICENSE("GPL");
628
