1 /* 2 * Driver for the NXP SAA7164 PCIe bridge 3 * 4 * Copyright (c) 2010 Steven Toth <stoth@kernellabs.com> 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 20 */ 21 22 /* 23 Driver architecture 24 ******************* 25 26 saa7164_core.c/buffer.c/cards.c/i2c.c/dvb.c 27 | : Standard Linux driver framework for creating 28 | : exposing and managing interfaces to the rest 29 | : of the kernel or userland. Also uses _fw.c to load 30 | : firmware direct into the PCIe bus, bypassing layers. 31 V 32 saa7164_api..() : Translate kernel specific functions/features 33 | : into command buffers. 34 V 35 saa7164_cmd..() : Manages the flow of command packets on/off, 36 | : the bus. Deal with bus errors, timeouts etc. 37 V 38 saa7164_bus..() : Manage a read/write memory ring buffer in the 39 | : PCIe Address space. 40 | 41 | saa7164_fw...() : Load any frimware 42 | | : direct into the device 43 V V 44 <- ----------------- PCIe address space -------------------- -> 45 */ 46 47 #include <linux/pci.h> 48 #include <linux/i2c.h> 49 #include <linux/i2c-algo-bit.h> 50 #include <linux/kdev_t.h> 51 #include <linux/version.h> 52 #include <linux/mutex.h> 53 #include <linux/crc32.h> 54 #include <linux/kthread.h> 55 #include <linux/freezer.h> 56 57 #include <media/tuner.h> 58 #include <media/tveeprom.h> 59 #include <media/videobuf-dma-sg.h> 60 #include <media/videobuf-dvb.h> 61 #include <dvb_demux.h> 62 #include <dvb_frontend.h> 63 #include <dvb_net.h> 64 #include <dvbdev.h> 65 #include <dmxdev.h> 66 #include <media/v4l2-common.h> 67 #include <media/v4l2-ioctl.h> 68 #include <media/v4l2-chip-ident.h> 69 70 #include "saa7164-reg.h" 71 #include "saa7164-types.h" 72 73 #define SAA7164_MAXBOARDS 8 74 75 #define UNSET (-1U) 76 #define SAA7164_BOARD_NOAUTO UNSET 77 #define SAA7164_BOARD_UNKNOWN 0 78 #define SAA7164_BOARD_UNKNOWN_REV2 1 79 #define SAA7164_BOARD_UNKNOWN_REV3 2 80 #define SAA7164_BOARD_HAUPPAUGE_HVR2250 3 81 #define SAA7164_BOARD_HAUPPAUGE_HVR2200 4 82 #define SAA7164_BOARD_HAUPPAUGE_HVR2200_2 5 83 #define SAA7164_BOARD_HAUPPAUGE_HVR2200_3 6 84 #define SAA7164_BOARD_HAUPPAUGE_HVR2250_2 7 85 #define SAA7164_BOARD_HAUPPAUGE_HVR2250_3 8 86 87 #define SAA7164_MAX_UNITS 8 88 #define SAA7164_TS_NUMBER_OF_LINES 312 89 #define SAA7164_PS_NUMBER_OF_LINES 256 90 #define SAA7164_PT_ENTRIES 16 /* (312 * 188) / 4096 */ 91 #define SAA7164_MAX_ENCODER_BUFFERS 64 /* max 5secs of latency at 6Mbps */ 92 #define SAA7164_MAX_VBI_BUFFERS 64 93 94 /* Port related defines */ 95 #define SAA7164_PORT_TS1 (0) 96 #define SAA7164_PORT_TS2 (SAA7164_PORT_TS1 + 1) 97 #define SAA7164_PORT_ENC1 (SAA7164_PORT_TS2 + 1) 98 #define SAA7164_PORT_ENC2 (SAA7164_PORT_ENC1 + 1) 99 #define SAA7164_PORT_VBI1 (SAA7164_PORT_ENC2 + 1) 100 #define SAA7164_PORT_VBI2 (SAA7164_PORT_VBI1 + 1) 101 #define SAA7164_MAX_PORTS (SAA7164_PORT_VBI2 + 1) 102 103 #define DBGLVL_FW 4 104 #define DBGLVL_DVB 8 105 #define DBGLVL_I2C 16 106 #define DBGLVL_API 32 107 #define DBGLVL_CMD 64 108 #define DBGLVL_BUS 128 109 #define DBGLVL_IRQ 256 110 #define DBGLVL_BUF 512 111 #define DBGLVL_ENC 1024 112 #define DBGLVL_VBI 2048 113 #define DBGLVL_THR 4096 114 #define DBGLVL_CPU 8192 115 116 #define SAA7164_NORMS \ 117 (V4L2_STD_NTSC_M | V4L2_STD_NTSC_M_JP | V4L2_STD_NTSC_443) 118 119 enum port_t { 120 SAA7164_MPEG_UNDEFINED = 0, 121 SAA7164_MPEG_DVB, 122 SAA7164_MPEG_ENCODER, 123 SAA7164_MPEG_VBI, 124 }; 125 126 enum saa7164_i2c_bus_nr { 127 SAA7164_I2C_BUS_0 = 0, 128 SAA7164_I2C_BUS_1, 129 SAA7164_I2C_BUS_2, 130 }; 131 132 enum saa7164_buffer_flags { 133 SAA7164_BUFFER_UNDEFINED = 0, 134 SAA7164_BUFFER_FREE, 135 SAA7164_BUFFER_BUSY, 136 SAA7164_BUFFER_FULL 137 }; 138 139 enum saa7164_unit_type { 140 SAA7164_UNIT_UNDEFINED = 0, 141 SAA7164_UNIT_DIGITAL_DEMODULATOR, 142 SAA7164_UNIT_ANALOG_DEMODULATOR, 143 SAA7164_UNIT_TUNER, 144 SAA7164_UNIT_EEPROM, 145 SAA7164_UNIT_ZILOG_IRBLASTER, 146 SAA7164_UNIT_ENCODER, 147 }; 148 149 /* The PCIe bridge doesn't grant direct access to i2c. 150 * Instead, you address i2c devices using a uniqely 151 * allocated 'unitid' value via a messaging API. This 152 * is a problem. The kernel and existing demod/tuner 153 * drivers expect to talk 'i2c', so we have to maintain 154 * a translation layer, and a series of functions to 155 * convert i2c bus + device address into a unit id. 156 */ 157 struct saa7164_unit { 158 enum saa7164_unit_type type; 159 u8 id; 160 char *name; 161 enum saa7164_i2c_bus_nr i2c_bus_nr; 162 u8 i2c_bus_addr; 163 u8 i2c_reg_len; 164 }; 165 166 struct saa7164_board { 167 char *name; 168 enum port_t porta, portb, portc, 169 portd, porte, portf; 170 enum { 171 SAA7164_CHIP_UNDEFINED = 0, 172 SAA7164_CHIP_REV2, 173 SAA7164_CHIP_REV3, 174 } chiprev; 175 struct saa7164_unit unit[SAA7164_MAX_UNITS]; 176 }; 177 178 struct saa7164_subid { 179 u16 subvendor; 180 u16 subdevice; 181 u32 card; 182 }; 183 184 struct saa7164_encoder_fh { 185 struct saa7164_port *port; 186 atomic_t v4l_reading; 187 }; 188 189 struct saa7164_vbi_fh { 190 struct saa7164_port *port; 191 atomic_t v4l_reading; 192 }; 193 194 struct saa7164_histogram_bucket { 195 u32 val; 196 u32 count; 197 u64 update_time; 198 }; 199 200 struct saa7164_histogram { 201 char name[32]; 202 struct saa7164_histogram_bucket counter1[64]; 203 }; 204 205 struct saa7164_user_buffer { 206 struct list_head list; 207 208 /* Attributes */ 209 u8 *data; 210 u32 pos; 211 u32 actual_size; 212 213 u32 crc; 214 }; 215 216 struct saa7164_fw_status { 217 218 /* RISC Core details */ 219 u32 status; 220 u32 mode; 221 u32 spec; 222 u32 inst; 223 u32 cpuload; 224 u32 remainheap; 225 226 /* Firmware version */ 227 u32 version; 228 u32 major; 229 u32 sub; 230 u32 rel; 231 u32 buildnr; 232 }; 233 234 struct saa7164_dvb { 235 struct mutex lock; 236 struct dvb_adapter adapter; 237 struct dvb_frontend *frontend; 238 struct dvb_demux demux; 239 struct dmxdev dmxdev; 240 struct dmx_frontend fe_hw; 241 struct dmx_frontend fe_mem; 242 struct dvb_net net; 243 int feeding; 244 }; 245 246 struct saa7164_i2c { 247 struct saa7164_dev *dev; 248 249 enum saa7164_i2c_bus_nr nr; 250 251 /* I2C I/O */ 252 struct i2c_adapter i2c_adap; 253 struct i2c_algo_bit_data i2c_algo; 254 struct i2c_client i2c_client; 255 u32 i2c_rc; 256 }; 257 258 struct saa7164_ctrl { 259 struct v4l2_queryctrl v; 260 }; 261 262 struct saa7164_tvnorm { 263 char *name; 264 v4l2_std_id id; 265 }; 266 267 struct saa7164_encoder_params { 268 struct saa7164_tvnorm encodernorm; 269 u32 height; 270 u32 width; 271 u32 is_50hz; 272 u32 bitrate; /* bps */ 273 u32 bitrate_peak; /* bps */ 274 u32 bitrate_mode; 275 u32 stream_type; /* V4L2_MPEG_STREAM_TYPE_MPEG2_TS */ 276 277 u32 audio_sampling_freq; 278 u32 ctl_mute; 279 u32 ctl_aspect; 280 u32 refdist; 281 u32 gop_size; 282 }; 283 284 struct saa7164_vbi_params { 285 struct saa7164_tvnorm encodernorm; 286 u32 height; 287 u32 width; 288 u32 is_50hz; 289 u32 bitrate; /* bps */ 290 u32 bitrate_peak; /* bps */ 291 u32 bitrate_mode; 292 u32 stream_type; /* V4L2_MPEG_STREAM_TYPE_MPEG2_TS */ 293 294 u32 audio_sampling_freq; 295 u32 ctl_mute; 296 u32 ctl_aspect; 297 u32 refdist; 298 u32 gop_size; 299 }; 300 301 struct saa7164_port; 302 303 struct saa7164_buffer { 304 struct list_head list; 305 306 /* Note of which h/w buffer list index position we occupy */ 307 int idx; 308 309 struct saa7164_port *port; 310 311 /* Hardware Specific */ 312 /* PCI Memory allocations */ 313 enum saa7164_buffer_flags flags; /* Free, Busy, Full */ 314 315 /* A block of page align PCI memory */ 316 u32 pci_size; /* PCI allocation size in bytes */ 317 u64 __iomem *cpu; /* Virtual address */ 318 dma_addr_t dma; /* Physical address */ 319 u32 crc; /* Checksum for the entire buffer data */ 320 321 /* A page table that splits the block into a number of entries */ 322 u32 pt_size; /* PCI allocation size in bytes */ 323 u64 __iomem *pt_cpu; /* Virtual address */ 324 dma_addr_t pt_dma; /* Physical address */ 325 326 /* Encoder fops */ 327 u32 pos; 328 u32 actual_size; 329 }; 330 331 struct saa7164_port { 332 333 struct saa7164_dev *dev; 334 enum port_t type; 335 int nr; 336 337 /* --- Generic port attributes --- */ 338 339 /* HW stream parameters */ 340 struct tmHWStreamParameters hw_streamingparams; 341 342 /* DMA configuration values, is seeded during initialization */ 343 struct tmComResDMATermDescrHeader hwcfg; 344 345 /* hardware specific registers */ 346 u32 bufcounter; 347 u32 pitch; 348 u32 bufsize; 349 u32 bufoffset; 350 u32 bufptr32l; 351 u32 bufptr32h; 352 u64 bufptr64; 353 354 u32 numpte; /* Number of entries in array, only valid in head */ 355 356 struct mutex dmaqueue_lock; 357 struct saa7164_buffer dmaqueue; 358 359 u64 last_irq_msecs, last_svc_msecs; 360 u64 last_irq_msecs_diff, last_svc_msecs_diff; 361 u32 last_svc_wp; 362 u32 last_svc_rp; 363 u64 last_irq_svc_msecs_diff; 364 u64 last_read_msecs, last_read_msecs_diff; 365 u64 last_poll_msecs, last_poll_msecs_diff; 366 367 struct saa7164_histogram irq_interval; 368 struct saa7164_histogram svc_interval; 369 struct saa7164_histogram irq_svc_interval; 370 struct saa7164_histogram read_interval; 371 struct saa7164_histogram poll_interval; 372 373 /* --- DVB Transport Specific --- */ 374 struct saa7164_dvb dvb; 375 376 /* --- Encoder/V4L related attributes --- */ 377 /* Encoder */ 378 /* Defaults established in saa7164-encoder.c */ 379 struct saa7164_tvnorm encodernorm; 380 u32 height; 381 u32 width; 382 u32 freq; 383 u32 ts_packet_size; 384 u32 ts_packet_count; 385 u8 mux_input; 386 u8 encoder_profile; 387 u8 video_format; 388 u8 audio_format; 389 u8 video_resolution; 390 u16 ctl_brightness; 391 u16 ctl_contrast; 392 u16 ctl_hue; 393 u16 ctl_saturation; 394 u16 ctl_sharpness; 395 s8 ctl_volume; 396 397 struct tmComResAFeatureDescrHeader audfeat; 398 struct tmComResEncoderDescrHeader encunit; 399 struct tmComResProcDescrHeader vidproc; 400 struct tmComResExtDevDescrHeader ifunit; 401 struct tmComResTunerDescrHeader tunerunit; 402 403 struct work_struct workenc; 404 405 /* V4L Encoder Video */ 406 struct saa7164_encoder_params encoder_params; 407 struct video_device *v4l_device; 408 atomic_t v4l_reader_count; 409 410 struct saa7164_buffer list_buf_used; 411 struct saa7164_buffer list_buf_free; 412 wait_queue_head_t wait_read; 413 414 /* V4L VBI */ 415 struct tmComResVBIFormatDescrHeader vbi_fmt_ntsc; 416 struct saa7164_vbi_params vbi_params; 417 418 /* Debug */ 419 u32 sync_errors; 420 u32 v_cc_errors; 421 u32 a_cc_errors; 422 u8 last_v_cc; 423 u8 last_a_cc; 424 u32 done_first_interrupt; 425 }; 426 427 struct saa7164_dev { 428 struct list_head devlist; 429 atomic_t refcount; 430 431 /* pci stuff */ 432 struct pci_dev *pci; 433 unsigned char pci_rev, pci_lat; 434 int pci_bus, pci_slot; 435 u32 __iomem *lmmio; 436 u8 __iomem *bmmio; 437 u32 __iomem *lmmio2; 438 u8 __iomem *bmmio2; 439 int pci_irqmask; 440 441 /* board details */ 442 int nr; 443 int hwrevision; 444 u32 board; 445 char name[16]; 446 447 /* firmware status */ 448 struct saa7164_fw_status fw_status; 449 u32 firmwareloaded; 450 451 struct tmComResHWDescr hwdesc; 452 struct tmComResInterfaceDescr intfdesc; 453 struct tmComResBusDescr busdesc; 454 455 struct tmComResBusInfo bus; 456 457 /* Interrupt status and ack registers */ 458 u32 int_status; 459 u32 int_ack; 460 461 struct cmd cmds[SAA_CMD_MAX_MSG_UNITS]; 462 struct mutex lock; 463 464 /* I2c related */ 465 struct saa7164_i2c i2c_bus[3]; 466 467 /* Transport related */ 468 struct saa7164_port ports[SAA7164_MAX_PORTS]; 469 470 /* Deferred command/api interrupts handling */ 471 struct work_struct workcmd; 472 473 /* A kernel thread to monitor the firmware log, used 474 * only in debug mode. 475 */ 476 struct task_struct *kthread; 477 478 }; 479 480 extern struct list_head saa7164_devlist; 481 extern unsigned int waitsecs; 482 extern unsigned int encoder_buffers; 483 extern unsigned int vbi_buffers; 484 485 /* ----------------------------------------------------------- */ 486 /* saa7164-core.c */ 487 void saa7164_dumpregs(struct saa7164_dev *dev, u32 addr); 488 void saa7164_dumphex16(struct saa7164_dev *dev, u8 *buf, int len); 489 void saa7164_getfirmwarestatus(struct saa7164_dev *dev); 490 u32 saa7164_getcurrentfirmwareversion(struct saa7164_dev *dev); 491 void saa7164_histogram_update(struct saa7164_histogram *hg, u32 val); 492 493 /* ----------------------------------------------------------- */ 494 /* saa7164-fw.c */ 495 int saa7164_downloadfirmware(struct saa7164_dev *dev); 496 497 /* ----------------------------------------------------------- */ 498 /* saa7164-i2c.c */ 499 extern int saa7164_i2c_register(struct saa7164_i2c *bus); 500 extern int saa7164_i2c_unregister(struct saa7164_i2c *bus); 501 extern void saa7164_call_i2c_clients(struct saa7164_i2c *bus, 502 unsigned int cmd, void *arg); 503 504 /* ----------------------------------------------------------- */ 505 /* saa7164-bus.c */ 506 int saa7164_bus_setup(struct saa7164_dev *dev); 507 void saa7164_bus_dump(struct saa7164_dev *dev); 508 int saa7164_bus_set(struct saa7164_dev *dev, struct tmComResInfo* msg, 509 void *buf); 510 int saa7164_bus_get(struct saa7164_dev *dev, struct tmComResInfo* msg, 511 void *buf, int peekonly); 512 513 /* ----------------------------------------------------------- */ 514 /* saa7164-cmd.c */ 515 int saa7164_cmd_send(struct saa7164_dev *dev, 516 u8 id, enum tmComResCmd command, u16 controlselector, 517 u16 size, void *buf); 518 void saa7164_cmd_signal(struct saa7164_dev *dev, u8 seqno); 519 int saa7164_irq_dequeue(struct saa7164_dev *dev); 520 521 /* ----------------------------------------------------------- */ 522 /* saa7164-api.c */ 523 int saa7164_api_get_fw_version(struct saa7164_dev *dev, u32 *version); 524 int saa7164_api_enum_subdevs(struct saa7164_dev *dev); 525 int saa7164_api_i2c_read(struct saa7164_i2c *bus, u8 addr, u32 reglen, u8 *reg, 526 u32 datalen, u8 *data); 527 int saa7164_api_i2c_write(struct saa7164_i2c *bus, u8 addr, 528 u32 datalen, u8 *data); 529 int saa7164_api_dif_write(struct saa7164_i2c *bus, u8 addr, 530 u32 datalen, u8 *data); 531 int saa7164_api_read_eeprom(struct saa7164_dev *dev, u8 *buf, int buflen); 532 int saa7164_api_set_gpiobit(struct saa7164_dev *dev, u8 unitid, u8 pin); 533 int saa7164_api_clear_gpiobit(struct saa7164_dev *dev, u8 unitid, u8 pin); 534 int saa7164_api_transition_port(struct saa7164_port *port, u8 mode); 535 int saa7164_api_initialize_dif(struct saa7164_port *port); 536 int saa7164_api_configure_dif(struct saa7164_port *port, u32 std); 537 int saa7164_api_set_encoder(struct saa7164_port *port); 538 int saa7164_api_get_encoder(struct saa7164_port *port); 539 int saa7164_api_set_aspect_ratio(struct saa7164_port *port); 540 int saa7164_api_set_usercontrol(struct saa7164_port *port, u8 ctl); 541 int saa7164_api_get_usercontrol(struct saa7164_port *port, u8 ctl); 542 int saa7164_api_set_videomux(struct saa7164_port *port); 543 int saa7164_api_audio_mute(struct saa7164_port *port, int mute); 544 int saa7164_api_set_audio_volume(struct saa7164_port *port, s8 level); 545 int saa7164_api_set_audio_std(struct saa7164_port *port); 546 int saa7164_api_set_audio_detection(struct saa7164_port *port, int autodetect); 547 int saa7164_api_get_videomux(struct saa7164_port *port); 548 int saa7164_api_set_vbi_format(struct saa7164_port *port); 549 int saa7164_api_set_debug(struct saa7164_dev *dev, u8 level); 550 int saa7164_api_collect_debug(struct saa7164_dev *dev); 551 int saa7164_api_get_load_info(struct saa7164_dev *dev, 552 struct tmFwInfoStruct *i); 553 554 /* ----------------------------------------------------------- */ 555 /* saa7164-cards.c */ 556 extern struct saa7164_board saa7164_boards[]; 557 extern const unsigned int saa7164_bcount; 558 559 extern struct saa7164_subid saa7164_subids[]; 560 extern const unsigned int saa7164_idcount; 561 562 extern void saa7164_card_list(struct saa7164_dev *dev); 563 extern void saa7164_gpio_setup(struct saa7164_dev *dev); 564 extern void saa7164_card_setup(struct saa7164_dev *dev); 565 566 extern int saa7164_i2caddr_to_reglen(struct saa7164_i2c *bus, int addr); 567 extern int saa7164_i2caddr_to_unitid(struct saa7164_i2c *bus, int addr); 568 extern char *saa7164_unitid_name(struct saa7164_dev *dev, u8 unitid); 569 570 /* ----------------------------------------------------------- */ 571 /* saa7164-dvb.c */ 572 extern int saa7164_dvb_register(struct saa7164_port *port); 573 extern int saa7164_dvb_unregister(struct saa7164_port *port); 574 575 /* ----------------------------------------------------------- */ 576 /* saa7164-buffer.c */ 577 extern struct saa7164_buffer *saa7164_buffer_alloc( 578 struct saa7164_port *port, u32 len); 579 extern int saa7164_buffer_dealloc(struct saa7164_buffer *buf); 580 extern void saa7164_buffer_display(struct saa7164_buffer *buf); 581 extern int saa7164_buffer_activate(struct saa7164_buffer *buf, int i); 582 extern int saa7164_buffer_cfg_port(struct saa7164_port *port); 583 extern struct saa7164_user_buffer *saa7164_buffer_alloc_user( 584 struct saa7164_dev *dev, u32 len); 585 extern void saa7164_buffer_dealloc_user(struct saa7164_user_buffer *buf); 586 extern int saa7164_buffer_zero_offsets(struct saa7164_port *port, int i); 587 588 /* ----------------------------------------------------------- */ 589 /* saa7164-encoder.c */ 590 int saa7164_encoder_register(struct saa7164_port *port); 591 void saa7164_encoder_unregister(struct saa7164_port *port); 592 593 /* ----------------------------------------------------------- */ 594 /* saa7164-vbi.c */ 595 int saa7164_vbi_register(struct saa7164_port *port); 596 void saa7164_vbi_unregister(struct saa7164_port *port); 597 598 /* ----------------------------------------------------------- */ 599 600 extern unsigned int crc_checking; 601 602 extern unsigned int saa_debug; 603 #define dprintk(level, fmt, arg...)\ 604 do { if (saa_debug & level)\ 605 printk(KERN_DEBUG "%s: " fmt, dev->name, ## arg);\ 606 } while (0) 607 608 #define log_warn(fmt, arg...)\ 609 do { \ 610 printk(KERN_WARNING "%s: " fmt, dev->name, ## arg);\ 611 } while (0) 612 613 #define log_err(fmt, arg...)\ 614 do { \ 615 printk(KERN_ERROR "%s: " fmt, dev->name, ## arg);\ 616 } while (0) 617 618 #define saa7164_readl(reg) readl(dev->lmmio + ((reg) >> 2)) 619 #define saa7164_writel(reg, value) writel((value), dev->lmmio + ((reg) >> 2)) 620 621 #define saa7164_readb(reg) readl(dev->bmmio + (reg)) 622 #define saa7164_writeb(reg, value) writel((value), dev->bmmio + (reg)) 623 624