1/* 2 * This file is part of linux driver the digital TV devices equipped with B2C2 FlexcopII(b)/III 3 * 4 * flexcop-usb.c - covers the USB part. 5 * 6 * see flexcop.c for copyright information. 7 */ 8 9#define FC_LOG_PREFIX "flexcop_usb" 10#include "flexcop-usb.h" 11#include "flexcop-common.h" 12 13/* Version information */ 14#define DRIVER_VERSION "0.1" 15#define DRIVER_NAME "Technisat/B2C2 FlexCop II/IIb/III Digital TV USB Driver" 16#define DRIVER_AUTHOR "Patrick Boettcher <patrick.boettcher@desy.de>" 17 18/* debug */ 19#ifdef CONFIG_DVB_B2C2_FLEXCOP_DEBUG 20#define dprintk(level,args...) \ 21 do { if ((debug & level)) { printk(args); } } while (0) 22#define debug_dump(b,l,method) {\ 23 int i; \ 24 for (i = 0; i < l; i++) method("%02x ", b[i]); \ 25 method("\n");\ 26} 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/* JLP 111700: we will include the 1 bit gap between the upper and lower 3 bits 47 * in the IBI address, to make the V8 code simpler. 48 * PCI ADDRESS FORMAT: 0x71C -> 0000 0111 0001 1100 (these are the six bits used) 49 * in general: 0000 0HHH 000L LL00 50 * IBI ADDRESS FORMAT: RHHH BLLL 51 * 52 * where R is the read(1)/write(0) bit, B is the busy bit 53 * and HHH and LLL are the two sets of three bits from the PCI address. 54 */ 55#define B2C2_FLEX_PCIOFFSET_TO_INTERNALADDR(usPCI) (u8) (((usPCI >> 2) & 0x07) + ((usPCI >> 4) & 0x70)) 56#define B2C2_FLEX_INTERNALADDR_TO_PCIOFFSET(ucAddr) (u16) (((ucAddr & 0x07) << 2) + ((ucAddr & 0x70) << 4)) 57 58/* 59 * DKT 020228 60 * - forget about this VENDOR_BUFFER_SIZE, read and write register 61 * deal with DWORD or 4 bytes, that should be should from now on 62 * - from now on, we don't support anything older than firm 1.00 63 * I eliminated the write register as a 2 trip of writing hi word and lo word 64 * and force this to write only 4 bytes at a time. 65 * NOTE: this should work with all the firmware from 1.00 and newer 66 */ 67static int flexcop_usb_readwrite_dw(struct flexcop_device *fc, u16 wRegOffsPCI, u32 *val, u8 read) 68{ 69 struct flexcop_usb *fc_usb = fc->bus_specific; 70 u8 request = read ? B2C2_USB_READ_REG : B2C2_USB_WRITE_REG; 71 u8 request_type = (read ? USB_DIR_IN : USB_DIR_OUT) | USB_TYPE_VENDOR; 72 u8 wAddress = B2C2_FLEX_PCIOFFSET_TO_INTERNALADDR(wRegOffsPCI) | (read ? 0x80 : 0); 73 74 int len = usb_control_msg(fc_usb->udev, 75 read ? B2C2_USB_CTRL_PIPE_IN : B2C2_USB_CTRL_PIPE_OUT, 76 request, 77 request_type, /* 0xc0 read or 0x40 write*/ 78 wAddress, 79 0, 80 val, 81 sizeof(u32), 82 B2C2_WAIT_FOR_OPERATION_RDW * HZ); 83 84 if (len != sizeof(u32)) { 85 err("error while %s dword from %d (%d).",read ? "reading" : "writing", 86 wAddress,wRegOffsPCI); 87 return -EIO; 88 } 89 return 0; 90} 91 92/* 93 * DKT 010817 - add support for V8 memory read/write and flash update 94 */ 95static int flexcop_usb_v8_memory_req(struct flexcop_usb *fc_usb, 96 flexcop_usb_request_t req, u8 page, u16 wAddress, 97 u8 *pbBuffer,u32 buflen) 98{ 99// u8 dwRequestType; 100 u8 request_type = USB_TYPE_VENDOR; 101 u16 wIndex; 102 int nWaitTime,pipe,len; 103 104 wIndex = page << 8; 105 106 switch (req) { 107 case B2C2_USB_READ_V8_MEM: 108 nWaitTime = B2C2_WAIT_FOR_OPERATION_V8READ; 109 request_type |= USB_DIR_IN; 110// dwRequestType = (u8) RTYPE_READ_V8_MEMORY; 111 pipe = B2C2_USB_CTRL_PIPE_IN; 112 break; 113 case B2C2_USB_WRITE_V8_MEM: 114 wIndex |= pbBuffer[0]; 115 request_type |= USB_DIR_OUT; 116 nWaitTime = B2C2_WAIT_FOR_OPERATION_V8WRITE; 117// dwRequestType = (u8) RTYPE_WRITE_V8_MEMORY; 118 pipe = B2C2_USB_CTRL_PIPE_OUT; 119 break; 120 case B2C2_USB_FLASH_BLOCK: 121 request_type |= USB_DIR_OUT; 122 nWaitTime = B2C2_WAIT_FOR_OPERATION_V8FLASH; 123// dwRequestType = (u8) RTYPE_WRITE_V8_FLASH; 124 pipe = B2C2_USB_CTRL_PIPE_OUT; 125 break; 126 default: 127 deb_info("unsupported request for v8_mem_req %x.\n",req); 128 return -EINVAL; 129 } 130 deb_v8("v8mem: %02x %02x %04x %04x, len: %d\n",request_type,req, 131 wAddress,wIndex,buflen); 132 133 len = usb_control_msg(fc_usb->udev,pipe, 134 req, 135 request_type, 136 wAddress, 137 wIndex, 138 pbBuffer, 139 buflen, 140 nWaitTime * HZ); 141 142 debug_dump(pbBuffer,len,deb_v8); 143 144 return len == buflen ? 0 : -EIO; 145} 146 147#define bytes_left_to_read_on_page(paddr,buflen) \ 148 ((V8_MEMORY_PAGE_SIZE - (paddr & V8_MEMORY_PAGE_MASK)) > buflen \ 149 ? buflen : (V8_MEMORY_PAGE_SIZE - (paddr & V8_MEMORY_PAGE_MASK))) 150 151static int flexcop_usb_memory_req(struct flexcop_usb *fc_usb,flexcop_usb_request_t req, 152 flexcop_usb_mem_page_t page_start, u32 addr, int extended, u8 *buf, u32 len) 153{ 154 int i,ret = 0; 155 u16 wMax; 156 u32 pagechunk = 0; 157 158 switch(req) { 159 case B2C2_USB_READ_V8_MEM: wMax = USB_MEM_READ_MAX; break; 160 case B2C2_USB_WRITE_V8_MEM: wMax = USB_MEM_WRITE_MAX; break; 161 case B2C2_USB_FLASH_BLOCK: wMax = USB_FLASH_MAX; break; 162 default: 163 return -EINVAL; 164 break; 165 } 166 for (i = 0; i < len;) { 167 pagechunk = wMax < bytes_left_to_read_on_page(addr,len) ? wMax : bytes_left_to_read_on_page(addr,len); 168 deb_info("%x\n",(addr & V8_MEMORY_PAGE_MASK) | (V8_MEMORY_EXTENDED*extended)); 169 if ((ret = flexcop_usb_v8_memory_req(fc_usb,req, 170 page_start + (addr / V8_MEMORY_PAGE_SIZE), /* actual page */ 171 (addr & V8_MEMORY_PAGE_MASK) | (V8_MEMORY_EXTENDED*extended), 172 &buf[i],pagechunk)) < 0) 173 return ret; 174 175 addr += pagechunk; 176 len -= pagechunk; 177 } 178 return 0; 179} 180 181static int flexcop_usb_get_mac_addr(struct flexcop_device *fc, int extended) 182{ 183 return flexcop_usb_memory_req(fc->bus_specific,B2C2_USB_READ_V8_MEM, 184 V8_MEMORY_PAGE_FLASH,0x1f010,1,fc->dvb_adapter.proposed_mac,6); 185} 186 187 188/* usb i2c stuff */ 189static int flexcop_usb_i2c_req(struct flexcop_usb *fc_usb, 190 flexcop_usb_request_t req, flexcop_usb_i2c_function_t func, 191 flexcop_i2c_port_t port, u8 chipaddr, u8 addr, u8 *buf, u8 buflen) 192{ 193 u16 wValue, wIndex; 194 int nWaitTime,pipe,len; 195// u8 dwRequestType; 196 u8 request_type = USB_TYPE_VENDOR; 197 198 switch (func) { 199 case USB_FUNC_I2C_WRITE: 200 case USB_FUNC_I2C_MULTIWRITE: 201 case USB_FUNC_I2C_REPEATWRITE: 202 /* DKT 020208 - add this to support special case of DiSEqC */ 203 case USB_FUNC_I2C_CHECKWRITE: 204 pipe = B2C2_USB_CTRL_PIPE_OUT; 205 nWaitTime = 2; 206// dwRequestType = (u8) RTYPE_GENERIC; 207 request_type |= USB_DIR_OUT; 208 break; 209 case USB_FUNC_I2C_READ: 210 case USB_FUNC_I2C_REPEATREAD: 211 pipe = B2C2_USB_CTRL_PIPE_IN; 212 nWaitTime = 2; 213// dwRequestType = (u8) RTYPE_GENERIC; 214 request_type |= USB_DIR_IN; 215 break; 216 default: 217 deb_info("unsupported function for i2c_req %x\n",func); 218 return -EINVAL; 219 } 220 wValue = (func << 8 ) | (port << 4); 221 wIndex = (chipaddr << 8 ) | addr; 222 223 deb_i2c("i2c %2d: %02x %02x %02x %02x %02x %02x\n",func,request_type,req, 224 wValue & 0xff, wValue >> 8, wIndex & 0xff, wIndex >> 8); 225 226 len = usb_control_msg(fc_usb->udev,pipe, 227 req, 228 request_type, 229 wValue, 230 wIndex, 231 buf, 232 buflen, 233 nWaitTime * HZ); 234 235 return len == buflen ? 0 : -EREMOTEIO; 236} 237 238/* actual bus specific access functions, make sure prototype are/will be equal to pci */ 239static flexcop_ibi_value flexcop_usb_read_ibi_reg(struct flexcop_device *fc, flexcop_ibi_register reg) 240{ 241 flexcop_ibi_value val; 242 val.raw = 0; 243 flexcop_usb_readwrite_dw(fc,reg, &val.raw, 1); 244 return val; 245} 246 247static int flexcop_usb_write_ibi_reg(struct flexcop_device *fc, flexcop_ibi_register reg, flexcop_ibi_value val) 248{ 249 return flexcop_usb_readwrite_dw(fc,reg, &val.raw, 0); 250} 251 252static int flexcop_usb_i2c_request(struct flexcop_device *fc, flexcop_access_op_t op, 253 flexcop_i2c_port_t port, u8 chipaddr, u8 addr, u8 *buf, u16 len) 254{ 255 if (op == FC_READ) 256 return flexcop_usb_i2c_req(fc->bus_specific,B2C2_USB_I2C_REQUEST,USB_FUNC_I2C_READ,port,chipaddr,addr,buf,len); 257 else 258 return flexcop_usb_i2c_req(fc->bus_specific,B2C2_USB_I2C_REQUEST,USB_FUNC_I2C_WRITE,port,chipaddr,addr,buf,len); 259} 260 261static void flexcop_usb_process_frame(struct flexcop_usb *fc_usb, u8 *buffer, int buffer_length) 262{ 263 u8 *b; 264 int l; 265 266 deb_ts("tmp_buffer_length=%d, buffer_length=%d\n", fc_usb->tmp_buffer_length, buffer_length); 267 268 if (fc_usb->tmp_buffer_length > 0) { 269 memcpy(fc_usb->tmp_buffer+fc_usb->tmp_buffer_length, buffer, buffer_length); 270 fc_usb->tmp_buffer_length += buffer_length; 271 b = fc_usb->tmp_buffer; 272 l = fc_usb->tmp_buffer_length; 273 } else { 274 b=buffer; 275 l=buffer_length; 276 } 277 278 while (l >= 190) { 279 if (*b == 0xff) 280 switch (*(b+1) & 0x03) { 281 case 0x01: /* media packet */ 282 if ( *(b+2) == 0x47 ) 283 flexcop_pass_dmx_packets(fc_usb->fc_dev, b+2, 1); 284 else 285 deb_ts("not ts packet %02x %02x %02x %02x \n", *(b+2), *(b+3), *(b+4), *(b+5) ); 286 287 b += 190; 288 l -= 190; 289 break; 290 default: 291 deb_ts("wrong packet type\n"); 292 l = 0; 293 break; 294 } 295 else { 296 deb_ts("wrong header\n"); 297 l = 0; 298 } 299 } 300 301 if (l>0) 302 memcpy(fc_usb->tmp_buffer, b, l); 303 fc_usb->tmp_buffer_length = l; 304} 305 306static void flexcop_usb_urb_complete(struct urb *urb) 307{ 308 struct flexcop_usb *fc_usb = urb->context; 309 int i; 310 311 if (urb->actual_length > 0) 312 deb_ts("urb completed, bufsize: %d actlen; %d\n",urb->transfer_buffer_length, urb->actual_length); 313 314 for (i = 0; i < urb->number_of_packets; i++) { 315 if (urb->iso_frame_desc[i].status < 0) { 316 err("iso frame descriptor %d has an error: %d\n",i,urb->iso_frame_desc[i].status); 317 } else 318 if (urb->iso_frame_desc[i].actual_length > 0) { 319 deb_ts("passed %d bytes to the demux\n",urb->iso_frame_desc[i].actual_length); 320 321 flexcop_usb_process_frame(fc_usb, 322 urb->transfer_buffer + urb->iso_frame_desc[i].offset, 323 urb->iso_frame_desc[i].actual_length); 324 } 325 urb->iso_frame_desc[i].status = 0; 326 urb->iso_frame_desc[i].actual_length = 0; 327 } 328 329 usb_submit_urb(urb,GFP_ATOMIC); 330} 331 332static int flexcop_usb_stream_control(struct flexcop_device *fc, int onoff) 333{ 334 /* submit/kill iso packets */ 335 return 0; 336} 337 338static void flexcop_usb_transfer_exit(struct flexcop_usb *fc_usb) 339{ 340 int i; 341 for (i = 0; i < B2C2_USB_NUM_ISO_URB; i++) 342 if (fc_usb->iso_urb[i] != NULL) { 343 deb_ts("unlinking/killing urb no. %d\n",i); 344 usb_kill_urb(fc_usb->iso_urb[i]); 345 usb_free_urb(fc_usb->iso_urb[i]); 346 } 347 348 if (fc_usb->iso_buffer != NULL) 349 pci_free_consistent(NULL,fc_usb->buffer_size, fc_usb->iso_buffer, fc_usb->dma_addr); 350} 351 352static int flexcop_usb_transfer_init(struct flexcop_usb *fc_usb) 353{ 354 u16 frame_size = fc_usb->uintf->cur_altsetting->endpoint[0].desc.wMaxPacketSize; 355 int bufsize = B2C2_USB_NUM_ISO_URB * B2C2_USB_FRAMES_PER_ISO * frame_size,i,j,ret; 356 int buffer_offset = 0; 357 358 deb_ts("creating %d iso-urbs with %d frames each of %d bytes size = %d.\n", 359 B2C2_USB_NUM_ISO_URB, B2C2_USB_FRAMES_PER_ISO, frame_size,bufsize); 360 361 fc_usb->iso_buffer = pci_alloc_consistent(NULL,bufsize,&fc_usb->dma_addr); 362 if (fc_usb->iso_buffer == NULL) 363 return -ENOMEM; 364 memset(fc_usb->iso_buffer, 0, bufsize); 365 fc_usb->buffer_size = bufsize; 366 367 /* creating iso urbs */ 368 for (i = 0; i < B2C2_USB_NUM_ISO_URB; i++) 369 if (!(fc_usb->iso_urb[i] = usb_alloc_urb(B2C2_USB_FRAMES_PER_ISO,GFP_ATOMIC))) { 370 ret = -ENOMEM; 371 goto urb_error; 372 } 373 /* initialising and submitting iso urbs */ 374 for (i = 0; i < B2C2_USB_NUM_ISO_URB; i++) { 375 int frame_offset = 0; 376 struct urb *urb = fc_usb->iso_urb[i]; 377 deb_ts("initializing and submitting urb no. %d (buf_offset: %d).\n",i,buffer_offset); 378 379 urb->dev = fc_usb->udev; 380 urb->context = fc_usb; 381 urb->complete = flexcop_usb_urb_complete; 382 urb->pipe = B2C2_USB_DATA_PIPE; 383 urb->transfer_flags = URB_ISO_ASAP; 384 urb->interval = 1; 385 urb->number_of_packets = B2C2_USB_FRAMES_PER_ISO; 386 urb->transfer_buffer_length = frame_size * B2C2_USB_FRAMES_PER_ISO; 387 urb->transfer_buffer = fc_usb->iso_buffer + buffer_offset; 388 389 buffer_offset += frame_size * B2C2_USB_FRAMES_PER_ISO; 390 for (j = 0; j < B2C2_USB_FRAMES_PER_ISO; j++) { 391 deb_ts("urb no: %d, frame: %d, frame_offset: %d\n",i,j,frame_offset); 392 urb->iso_frame_desc[j].offset = frame_offset; 393 urb->iso_frame_desc[j].length = frame_size; 394 frame_offset += frame_size; 395 } 396 397 if ((ret = usb_submit_urb(fc_usb->iso_urb[i],GFP_ATOMIC))) { 398 err("submitting urb %d failed with %d.",i,ret); 399 goto urb_error; 400 } 401 deb_ts("submitted urb no. %d.\n",i); 402 } 403 404/* SRAM */ 405 406 flexcop_sram_set_dest(fc_usb->fc_dev,FC_SRAM_DEST_MEDIA | FC_SRAM_DEST_NET | 407 FC_SRAM_DEST_CAO | FC_SRAM_DEST_CAI, FC_SRAM_DEST_TARGET_WAN_USB); 408 flexcop_wan_set_speed(fc_usb->fc_dev,FC_WAN_SPEED_8MBITS); 409 flexcop_sram_ctrl(fc_usb->fc_dev,1,1,1); 410 411 return 0; 412 413urb_error: 414 flexcop_usb_transfer_exit(fc_usb); 415 return ret; 416} 417 418static int flexcop_usb_init(struct flexcop_usb *fc_usb) 419{ 420 /* use the alternate setting with the larges buffer */ 421 usb_set_interface(fc_usb->udev,0,1); 422 switch (fc_usb->udev->speed) { 423 case USB_SPEED_LOW: 424 err("cannot handle USB speed because it is to sLOW."); 425 return -ENODEV; 426 break; 427 case USB_SPEED_FULL: 428 info("running at FULL speed."); 429 break; 430 case USB_SPEED_HIGH: 431 info("running at HIGH speed."); 432 break; 433 case USB_SPEED_UNKNOWN: /* fall through */ 434 default: 435 err("cannot handle USB speed because it is unkown."); 436 return -ENODEV; 437 } 438 usb_set_intfdata(fc_usb->uintf, fc_usb); 439 return 0; 440} 441 442static void flexcop_usb_exit(struct flexcop_usb *fc_usb) 443{ 444 usb_set_intfdata(fc_usb->uintf, NULL); 445} 446 447static int flexcop_usb_probe(struct usb_interface *intf, 448 const struct usb_device_id *id) 449{ 450 struct usb_device *udev = interface_to_usbdev(intf); 451 struct flexcop_usb *fc_usb = NULL; 452 struct flexcop_device *fc = NULL; 453 int ret; 454 455 if ((fc = flexcop_device_kmalloc(sizeof(struct flexcop_usb))) == NULL) { 456 err("out of memory\n"); 457 return -ENOMEM; 458 } 459 460/* general flexcop init */ 461 fc_usb = fc->bus_specific; 462 fc_usb->fc_dev = fc; 463 464 fc->read_ibi_reg = flexcop_usb_read_ibi_reg; 465 fc->write_ibi_reg = flexcop_usb_write_ibi_reg; 466 fc->i2c_request = flexcop_usb_i2c_request; 467 fc->get_mac_addr = flexcop_usb_get_mac_addr; 468 469 fc->stream_control = flexcop_usb_stream_control; 470 471 fc->pid_filtering = 1; 472 fc->bus_type = FC_USB; 473 474 fc->dev = &udev->dev; 475 fc->owner = THIS_MODULE; 476 477/* bus specific part */ 478 fc_usb->udev = udev; 479 fc_usb->uintf = intf; 480 if ((ret = flexcop_usb_init(fc_usb)) != 0) 481 goto err_kfree; 482 483/* init flexcop */ 484 if ((ret = flexcop_device_initialize(fc)) != 0) 485 goto err_usb_exit; 486 487/* xfer init */ 488 if ((ret = flexcop_usb_transfer_init(fc_usb)) != 0) 489 goto err_fc_exit; 490 491 info("%s successfully initialized and connected.",DRIVER_NAME); 492 return 0; 493 494err_fc_exit: 495 flexcop_device_exit(fc); 496err_usb_exit: 497 flexcop_usb_exit(fc_usb); 498err_kfree: 499 flexcop_device_kfree(fc); 500 return ret; 501} 502 503static void flexcop_usb_disconnect(struct usb_interface *intf) 504{ 505 struct flexcop_usb *fc_usb = usb_get_intfdata(intf); 506 flexcop_usb_transfer_exit(fc_usb); 507 flexcop_device_exit(fc_usb->fc_dev); 508 flexcop_usb_exit(fc_usb); 509 flexcop_device_kfree(fc_usb->fc_dev); 510 info("%s successfully deinitialized and disconnected.",DRIVER_NAME); 511} 512 513static struct usb_device_id flexcop_usb_table [] = { 514 { USB_DEVICE(0x0af7, 0x0101) }, 515 { } 516}; 517MODULE_DEVICE_TABLE (usb, flexcop_usb_table); 518 519/* usb specific object needed to register this driver with the usb subsystem */ 520static struct usb_driver flexcop_usb_driver = { 521 .name = "b2c2_flexcop_usb", 522 .probe = flexcop_usb_probe, 523 .disconnect = flexcop_usb_disconnect, 524 .id_table = flexcop_usb_table, 525}; 526 527/* module stuff */ 528static int __init flexcop_usb_module_init(void) 529{ 530 int result; 531 if ((result = usb_register(&flexcop_usb_driver))) { 532 err("usb_register failed. (%d)",result); 533 return result; 534 } 535 536 return 0; 537} 538 539static void __exit flexcop_usb_module_exit(void) 540{ 541 /* deregister this driver from the USB subsystem */ 542 usb_deregister(&flexcop_usb_driver); 543} 544 545module_init(flexcop_usb_module_init); 546module_exit(flexcop_usb_module_exit); 547 548MODULE_AUTHOR(DRIVER_AUTHOR); 549MODULE_DESCRIPTION(DRIVER_NAME); 550MODULE_LICENSE("GPL"); 551