drivers/media/video/ivtv/ivtv-driver.h

   1 /*
   2     ivtv driver internal defines and structures
   3     Copyright (C) 2003-2004  Kevin Thayer <nufan_wfk at yahoo.com>
   4     Copyright (C) 2004  Chris Kennedy <c@groovy.org>
   5     Copyright (C) 2005-2007  Hans Verkuil <hverkuil@xs4all.nl>
   6
   7     This program is free software; you can redistribute it and/or modify
   8     it under the terms of the GNU General Public License as published by
   9     the Free Software Foundation; either version 2 of the License, or
  10     (at your option) any later version.
  11
  12     This program is distributed in the hope that it will be useful,
  13     but WITHOUT ANY WARRANTY; without even the implied warranty of
  14     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 #ifndef IVTV_DRIVER_H
  23 #define IVTV_DRIVER_H
  24
  25 /* Internal header for ivtv project:
  26  * Driver for the cx23415/6 chip.
  27  * Author: Kevin Thayer (nufan_wfk at yahoo.com)
  28  * License: GPL
  29  * http://www.ivtvdriver.org
  30  *
  31  * -----
  32  * MPG600/MPG160 support by  T.Adachi <tadachi@tadachi-net.com>
  33  *                      and Takeru KOMORIYA<komoriya@paken.org>
  34  *
  35  * AVerMedia M179 GPIO info by Chris Pinkham <cpinkham@bc2va.org>
  36  *                using information provided by Jiun-Kuei Jung @ AVerMedia.
  37  */
  38
  39 #include <linux/version.h>
  40 #include <linux/module.h>
  41 #include <linux/init.h>
  42 #include <linux/delay.h>
  43 #include <linux/sched.h>
  44 #include <linux/fs.h>
  45 #include <linux/pci.h>
  46 #include <linux/interrupt.h>
  47 #include <linux/spinlock.h>
  48 #include <linux/i2c.h>
  49 #include <linux/i2c-algo-bit.h>
  50 #include <linux/list.h>
  51 #include <linux/unistd.h>
  52 #include <linux/byteorder/swab.h>
  53 #include <linux/pagemap.h>
  54 #include <linux/workqueue.h>
  55 #include <linux/mutex.h>
  56 #include <asm/uaccess.h>
  57 #include <asm/system.h>
  58
  59 #include <linux/dvb/video.h>
  60 #include <linux/dvb/audio.h>
  61 #include <media/v4l2-common.h>
  62 #include <media/tuner.h>
  63 #include <media/cx2341x.h>
  64
  65 #include <linux/ivtv.h>
  66
  67
  68 /* Memory layout */
  69 #define IVTV_ENCODER_OFFSET     0x00000000
  70 #define IVTV_ENCODER_SIZE       0x00800000      /* Total size is 0x01000000, but only first half is used */
  71 #define IVTV_DECODER_OFFSET     0x01000000
  72 #define IVTV_DECODER_SIZE       0x00800000      /* Total size is 0x01000000, but only first half is used */
  73 #define IVTV_REG_OFFSET         0x02000000
  74 #define IVTV_REG_SIZE           0x00010000
  75
  76 /* Maximum ivtv driver instances. Some people have a huge number of
  77    capture cards, so set this to a high value. */
  78 #define IVTV_MAX_CARDS 32
  79
  80 #define IVTV_ENC_STREAM_TYPE_MPG  0
  81 #define IVTV_ENC_STREAM_TYPE_YUV  1
  82 #define IVTV_ENC_STREAM_TYPE_VBI  2
  83 #define IVTV_ENC_STREAM_TYPE_PCM  3
  84 #define IVTV_ENC_STREAM_TYPE_RAD  4
  85 #define IVTV_DEC_STREAM_TYPE_MPG  5
  86 #define IVTV_DEC_STREAM_TYPE_VBI  6
  87 #define IVTV_DEC_STREAM_TYPE_VOUT 7
  88 #define IVTV_DEC_STREAM_TYPE_YUV  8
  89 #define IVTV_MAX_STREAMS          9
  90
  91 #define IVTV_DMA_SG_OSD_ENT     (2883584/PAGE_SIZE)     /* sg entities */
  92
  93 /* DMA Registers */
  94 #define IVTV_REG_DMAXFER        (0x0000)
  95 #define IVTV_REG_DMASTATUS      (0x0004)
  96 #define IVTV_REG_DECDMAADDR     (0x0008)
  97 #define IVTV_REG_ENCDMAADDR     (0x000c)
  98 #define IVTV_REG_DMACONTROL     (0x0010)
  99 #define IVTV_REG_IRQSTATUS      (0x0040)
 100 #define IVTV_REG_IRQMASK        (0x0048)
 101
 102 /* Setup Registers */
 103 #define IVTV_REG_ENC_SDRAM_REFRESH      (0x07F8)
 104 #define IVTV_REG_ENC_SDRAM_PRECHARGE    (0x07FC)
 105 #define IVTV_REG_DEC_SDRAM_REFRESH      (0x08F8)
 106 #define IVTV_REG_DEC_SDRAM_PRECHARGE    (0x08FC)
 107 #define IVTV_REG_VDM                    (0x2800)
 108 #define IVTV_REG_AO                     (0x2D00)
 109 #define IVTV_REG_BYTEFLUSH              (0x2D24)
 110 #define IVTV_REG_SPU                    (0x9050)
 111 #define IVTV_REG_HW_BLOCKS              (0x9054)
 112 #define IVTV_REG_VPU                    (0x9058)
 113 #define IVTV_REG_APU                    (0xA064)
 114
 115 /* i2c stuff */
 116 #define I2C_CLIENTS_MAX 16
 117
 118 /* debugging */
 119 extern int ivtv_debug;
 120
 121 #define IVTV_DBGFLG_WARN    (1 << 0)
 122 #define IVTV_DBGFLG_INFO    (1 << 1)
 123 #define IVTV_DBGFLG_MB      (1 << 2)
 124 #define IVTV_DBGFLG_IOCTL   (1 << 3)
 125 #define IVTV_DBGFLG_FILE    (1 << 4)
 126 #define IVTV_DBGFLG_DMA     (1 << 5)
 127 #define IVTV_DBGFLG_IRQ     (1 << 6)
 128 #define IVTV_DBGFLG_DEC     (1 << 7)
 129 #define IVTV_DBGFLG_YUV     (1 << 8)
 130 #define IVTV_DBGFLG_I2C     (1 << 9)
 131 /* Flag to turn on high volume debugging */
 132 #define IVTV_DBGFLG_HIGHVOL (1 << 10)
 133
 134 /* NOTE: extra space before comma in 'itv->num , ## args' is required for
 135    gcc-2.95, otherwise it won't compile. */
 136 #define IVTV_DEBUG(x, type, fmt, args...) \
 137         do { \
 138                 if ((x) & ivtv_debug) \
 139                         printk(KERN_INFO "ivtv%d " type ": " fmt, itv->num , ## args); \
 140         } while (0)
 141 #define IVTV_DEBUG_WARN(fmt, args...)  IVTV_DEBUG(IVTV_DBGFLG_WARN,  "warn",  fmt , ## args)
 142 #define IVTV_DEBUG_INFO(fmt, args...)  IVTV_DEBUG(IVTV_DBGFLG_INFO,  "info",  fmt , ## args)
 143 #define IVTV_DEBUG_MB(fmt, args...)    IVTV_DEBUG(IVTV_DBGFLG_MB,    "mb",    fmt , ## args)
 144 #define IVTV_DEBUG_DMA(fmt, args...)   IVTV_DEBUG(IVTV_DBGFLG_DMA,   "dma",   fmt , ## args)
 145 #define IVTV_DEBUG_IOCTL(fmt, args...) IVTV_DEBUG(IVTV_DBGFLG_IOCTL, "ioctl", fmt , ## args)
 146 #define IVTV_DEBUG_FILE(fmt, args...)  IVTV_DEBUG(IVTV_DBGFLG_FILE,  "file",  fmt , ## args)
 147 #define IVTV_DEBUG_I2C(fmt, args...)   IVTV_DEBUG(IVTV_DBGFLG_I2C,   "i2c",   fmt , ## args)
 148 #define IVTV_DEBUG_IRQ(fmt, args...)   IVTV_DEBUG(IVTV_DBGFLG_IRQ,   "irq",   fmt , ## args)
 149 #define IVTV_DEBUG_DEC(fmt, args...)   IVTV_DEBUG(IVTV_DBGFLG_DEC,   "dec",   fmt , ## args)
 150 #define IVTV_DEBUG_YUV(fmt, args...)   IVTV_DEBUG(IVTV_DBGFLG_YUV,   "yuv",   fmt , ## args)
 151
 152 #define IVTV_DEBUG_HIGH_VOL(x, type, fmt, args...) \
 153         do { \
 154                 if (((x) & ivtv_debug) && (ivtv_debug & IVTV_DBGFLG_HIGHVOL)) \
 155                         printk(KERN_INFO "ivtv%d " type ": " fmt, itv->num , ## args); \
 156         } while (0)
 157 #define IVTV_DEBUG_HI_WARN(fmt, args...)  IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_WARN,  "warn",  fmt , ## args)
 158 #define IVTV_DEBUG_HI_INFO(fmt, args...)  IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_INFO,  "info",  fmt , ## args)
 159 #define IVTV_DEBUG_HI_MB(fmt, args...)    IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_MB,    "mb",    fmt , ## args)
 160 #define IVTV_DEBUG_HI_DMA(fmt, args...)   IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_DMA,   "dma",   fmt , ## args)
 161 #define IVTV_DEBUG_HI_IOCTL(fmt, args...) IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_IOCTL, "ioctl", fmt , ## args)
 162 #define IVTV_DEBUG_HI_FILE(fmt, args...)  IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_FILE,  "file",  fmt , ## args)
 163 #define IVTV_DEBUG_HI_I2C(fmt, args...)   IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_I2C,   "i2c",   fmt , ## args)
 164 #define IVTV_DEBUG_HI_IRQ(fmt, args...)   IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_IRQ,   "irq",   fmt , ## args)
 165 #define IVTV_DEBUG_HI_DEC(fmt, args...)   IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_DEC,   "dec",   fmt , ## args)
 166 #define IVTV_DEBUG_HI_YUV(fmt, args...)   IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_YUV,   "yuv",   fmt , ## args)
 167
 168 /* Standard kernel messages */
 169 #define IVTV_ERR(fmt, args...)      printk(KERN_ERR  "ivtv%d: " fmt, itv->num , ## args)
 170 #define IVTV_WARN(fmt, args...)     printk(KERN_WARNING "ivtv%d: " fmt, itv->num , ## args)
 171 #define IVTV_INFO(fmt, args...)     printk(KERN_INFO "ivtv%d: " fmt, itv->num , ## args)
 172
 173 /* output modes (cx23415 only) */
 174 #define OUT_NONE        0
 175 #define OUT_MPG         1
 176 #define OUT_YUV         2
 177 #define OUT_UDMA_YUV    3
 178 #define OUT_PASSTHROUGH 4
 179
 180 #define IVTV_MAX_PGM_INDEX (400)
 181
 182 struct ivtv_options {
 183         int kilobytes[IVTV_MAX_STREAMS];        /* size in kilobytes of each stream */
 184         int cardtype;                           /* force card type on load */
 185         int tuner;                              /* set tuner on load */
 186         int radio;                              /* enable/disable radio */
 187         int newi2c;                             /* new I2C algorithm */
 188 };
 189
 190 /* ivtv-specific mailbox template */
 191 struct ivtv_mailbox {
 192         u32 flags;
 193         u32 cmd;
 194         u32 retval;
 195         u32 timeout;
 196         u32 data[CX2341X_MBOX_MAX_DATA];
 197 };
 198
 199 struct ivtv_api_cache {
 200         unsigned long last_jiffies;             /* when last command was issued */
 201         u32 data[CX2341X_MBOX_MAX_DATA];        /* last sent api data */
 202 };
 203
 204 struct ivtv_mailbox_data {
 205         volatile struct ivtv_mailbox __iomem *mbox;
 206         /* Bits 0-2 are for the encoder mailboxes, 0-1 are for the decoder mailboxes.
 207            If the bit is set, then the corresponding mailbox is in use by the driver. */
 208         unsigned long busy;
 209         u8 max_mbox;
 210 };
 211
 212 /* per-buffer bit flags */
 213 #define IVTV_F_B_NEED_BUF_SWAP  (1 << 0)        /* this buffer should be byte swapped */
 214
 215 /* per-stream, s_flags */
 216 #define IVTV_F_S_DMA_PENDING    0       /* this stream has pending DMA */
 217 #define IVTV_F_S_DMA_HAS_VBI    1       /* the current DMA request also requests VBI data */
 218 #define IVTV_F_S_NEEDS_DATA     2       /* this decoding stream needs more data */
 219
 220 #define IVTV_F_S_CLAIMED        3       /* this stream is claimed */
 221 #define IVTV_F_S_STREAMING      4       /* the fw is decoding/encoding this stream */
 222 #define IVTV_F_S_INTERNAL_USE   5       /* this stream is used internally (sliced VBI processing) */
 223 #define IVTV_F_S_PASSTHROUGH    6       /* this stream is in passthrough mode */
 224 #define IVTV_F_S_STREAMOFF      7       /* signal end of stream EOS */
 225 #define IVTV_F_S_APPL_IO        8       /* this stream is used read/written by an application */
 226
 227 #define IVTV_F_S_PIO_PENDING    9       /* this stream has pending PIO */
 228 #define IVTV_F_S_PIO_HAS_VBI    1       /* the current PIO request also requests VBI data */
 229
 230 /* per-ivtv, i_flags */
 231 #define IVTV_F_I_DMA               0    /* DMA in progress */
 232 #define IVTV_F_I_UDMA              1    /* UDMA in progress */
 233 #define IVTV_F_I_UDMA_PENDING      2    /* UDMA pending */
 234 #define IVTV_F_I_SPEED_CHANGE      3    /* a speed change is in progress */
 235 #define IVTV_F_I_EOS               4    /* end of encoder stream reached */
 236 #define IVTV_F_I_RADIO_USER        5    /* the radio tuner is selected */
 237 #define IVTV_F_I_DIG_RST           6    /* reset digitizer */
 238 #define IVTV_F_I_DEC_YUV           7    /* YUV instead of MPG is being decoded */
 239 #define IVTV_F_I_UPDATE_CC         9    /* CC should be updated */
 240 #define IVTV_F_I_UPDATE_WSS        10   /* WSS should be updated */
 241 #define IVTV_F_I_UPDATE_VPS        11   /* VPS should be updated */
 242 #define IVTV_F_I_DECODING_YUV      12   /* this stream is YUV frame decoding */
 243 #define IVTV_F_I_ENC_PAUSED        13   /* the encoder is paused */
 244 #define IVTV_F_I_VALID_DEC_TIMINGS 14   /* last_dec_timing is valid */
 245 #define IVTV_F_I_HAVE_WORK         15   /* used in the interrupt handler: there is work to be done */
 246 #define IVTV_F_I_WORK_HANDLER_VBI  16   /* there is work to be done for VBI */
 247 #define IVTV_F_I_WORK_HANDLER_YUV  17   /* there is work to be done for YUV */
 248 #define IVTV_F_I_WORK_HANDLER_PIO  18   /* there is work to be done for PIO */
 249 #define IVTV_F_I_PIO               19   /* PIO in progress */
 250 #define IVTV_F_I_DEC_PAUSED        20   /* the decoder is paused */
 251 #define IVTV_F_I_INITED            21   /* set after first open */
 252 #define IVTV_F_I_FAILED            22   /* set if first open failed */
 253
 254 /* Event notifications */
 255 #define IVTV_F_I_EV_DEC_STOPPED    28   /* decoder stopped event */
 256 #define IVTV_F_I_EV_VSYNC          29   /* VSYNC event */
 257 #define IVTV_F_I_EV_VSYNC_FIELD    30   /* VSYNC event field (0 = first, 1 = second field) */
 258 #define IVTV_F_I_EV_VSYNC_ENABLED  31   /* VSYNC event enabled */
 259
 260 /* Scatter-Gather array element, used in DMA transfers */
 261 struct ivtv_sg_element {
 262         u32 src;
 263         u32 dst;
 264         u32 size;
 265 };
 266
 267 struct ivtv_user_dma {
 268         struct mutex lock;
 269         int page_count;
 270         struct page *map[IVTV_DMA_SG_OSD_ENT];
 271         /* Needed when dealing with highmem userspace buffers */
 272         struct page *bouncemap[IVTV_DMA_SG_OSD_ENT];
 273
 274         /* Base Dev SG Array for cx23415/6 */
 275         struct ivtv_sg_element SGarray[IVTV_DMA_SG_OSD_ENT];
 276         dma_addr_t SG_handle;
 277         int SG_length;
 278
 279         /* SG List of Buffers */
 280         struct scatterlist SGlist[IVTV_DMA_SG_OSD_ENT];
 281 };
 282
 283 struct ivtv_dma_page_info {
 284         unsigned long uaddr;
 285         unsigned long first;
 286         unsigned long last;
 287         unsigned int offset;
 288         unsigned int tail;
 289         int page_count;
 290 };
 291
 292 struct ivtv_buffer {
 293         struct list_head list;
 294         dma_addr_t dma_handle;
 295         unsigned short b_flags;
 296         unsigned short dma_xfer_cnt;
 297         char *buf;
 298         u32 bytesused;
 299         u32 readpos;
 300 };
 301
 302 struct ivtv_queue {
 303         struct list_head list;          /* the list of buffers in this queue */
 304         u32 buffers;                    /* number of buffers in this queue */
 305         u32 length;                     /* total number of bytes of available buffer space */
 306         u32 bytesused;                  /* total number of bytes used in this queue */
 307 };
 308
 309 struct ivtv;                            /* forward reference */
 310
 311 struct ivtv_stream {
 312         /* These first four fields are always set, even if the stream
 313            is not actually created. */
 314         struct video_device *v4l2dev;   /* NULL when stream not created */
 315         struct ivtv *itv;               /* for ease of use */
 316         const char *name;               /* name of the stream */
 317         int type;                       /* stream type */
 318
 319         u32 id;
 320         spinlock_t qlock;               /* locks access to the queues */
 321         unsigned long s_flags;          /* status flags, see above */
 322         int dma;                        /* can be PCI_DMA_TODEVICE, PCI_DMA_FROMDEVICE or PCI_DMA_NONE */
 323         u32 pending_offset;
 324         u32 pending_backup;
 325         u64 pending_pts;
 326
 327         u32 dma_offset;
 328         u32 dma_backup;
 329         u64 dma_pts;
 330
 331         int subtype;
 332         wait_queue_head_t waitq;
 333         u32 dma_last_offset;
 334
 335         /* Buffer Stats */
 336         u32 buffers;
 337         u32 buf_size;
 338         u32 buffers_stolen;
 339
 340         /* Buffer Queues */
 341         struct ivtv_queue q_free;       /* free buffers */
 342         struct ivtv_queue q_full;       /* full buffers */
 343         struct ivtv_queue q_io;         /* waiting for I/O */
 344         struct ivtv_queue q_dma;        /* waiting for DMA */
 345         struct ivtv_queue q_predma;     /* waiting for DMA */
 346
 347         /* DMA xfer counter, buffers belonging to the same DMA
 348            xfer will have the same dma_xfer_cnt. */
 349         u16 dma_xfer_cnt;
 350
 351         /* Base Dev SG Array for cx23415/6 */
 352         struct ivtv_sg_element *sg_pending;
 353         struct ivtv_sg_element *sg_processing;
 354         struct ivtv_sg_element *sg_dma;
 355         dma_addr_t sg_handle;
 356         int sg_pending_size;
 357         int sg_processing_size;
 358         int sg_processed;
 359
 360         /* SG List of Buffers */
 361         struct scatterlist *SGlist;
 362 };
 363
 364 struct ivtv_open_id {
 365         u32 open_id;                    /* unique ID for this file descriptor */
 366         int type;                       /* stream type */
 367         int yuv_frames;                 /* 1: started OUT_UDMA_YUV output mode */
 368         enum v4l2_priority prio;        /* priority */
 369         struct ivtv *itv;
 370 };
 371
 372 struct yuv_frame_info
 373 {
 374         u32 update;
 375         s32 src_x;
 376         s32 src_y;
 377         u32 src_w;
 378         u32 src_h;
 379         s32 dst_x;
 380         s32 dst_y;
 381         u32 dst_w;
 382         u32 dst_h;
 383         s32 pan_x;
 384         s32 pan_y;
 385         u32 vis_w;
 386         u32 vis_h;
 387         u32 interlaced_y;
 388         u32 interlaced_uv;
 389         s32 tru_x;
 390         u32 tru_w;
 391         u32 tru_h;
 392         u32 offset_y;
 393         s32 lace_mode;
 394 };
 395
 396 #define IVTV_YUV_MODE_INTERLACED        0x00
 397 #define IVTV_YUV_MODE_PROGRESSIVE       0x01
 398 #define IVTV_YUV_MODE_AUTO              0x02
 399 #define IVTV_YUV_MODE_MASK              0x03
 400
 401 #define IVTV_YUV_SYNC_EVEN              0x00
 402 #define IVTV_YUV_SYNC_ODD               0x04
 403 #define IVTV_YUV_SYNC_MASK              0x04
 404
 405 struct yuv_playback_info
 406 {
 407         u32 reg_2834;
 408         u32 reg_2838;
 409         u32 reg_283c;
 410         u32 reg_2840;
 411         u32 reg_2844;
 412         u32 reg_2848;
 413         u32 reg_2854;
 414         u32 reg_285c;
 415         u32 reg_2864;
 416
 417         u32 reg_2870;
 418         u32 reg_2874;
 419         u32 reg_2890;
 420         u32 reg_2898;
 421         u32 reg_289c;
 422
 423         u32 reg_2918;
 424         u32 reg_291c;
 425         u32 reg_2920;
 426         u32 reg_2924;
 427         u32 reg_2928;
 428         u32 reg_292c;
 429         u32 reg_2930;
 430
 431         u32 reg_2934;
 432
 433         u32 reg_2938;
 434         u32 reg_293c;
 435         u32 reg_2940;
 436         u32 reg_2944;
 437         u32 reg_2948;
 438         u32 reg_294c;
 439         u32 reg_2950;
 440         u32 reg_2954;
 441         u32 reg_2958;
 442         u32 reg_295c;
 443         u32 reg_2960;
 444         u32 reg_2964;
 445         u32 reg_2968;
 446         u32 reg_296c;
 447
 448         u32 reg_2970;
 449
 450         int v_filter_1;
 451         int v_filter_2;
 452         int h_filter;
 453
 454         u32 osd_x_offset;
 455         u32 osd_y_offset;
 456
 457         u32 osd_x_pan;
 458         u32 osd_y_pan;
 459
 460         u32 osd_vis_w;
 461         u32 osd_vis_h;
 462
 463         int decode_height;
 464
 465         int frame_interlaced;
 466
 467         int lace_mode;
 468         int lace_threshold;
 469         int lace_sync_field;
 470
 471         atomic_t next_dma_frame;
 472         atomic_t next_fill_frame;
 473
 474         u32 yuv_forced_update;
 475         int update_frame;
 476
 477         int sync_field[4];  /* Field to sync on */
 478         int field_delay[4]; /* Flag to extend duration of previous frame */
 479         u8 fields_lapsed;   /* Counter used when delaying a frame */
 480
 481         struct yuv_frame_info new_frame_info[4];
 482         struct yuv_frame_info old_frame_info;
 483         struct yuv_frame_info old_frame_info_args;
 484
 485         void *blanking_ptr;
 486         dma_addr_t blanking_dmaptr;
 487 };
 488
 489 #define IVTV_VBI_FRAMES 32
 490
 491 /* VBI data */
 492 struct vbi_cc {
 493         u8 odd[2];      /* two-byte payload of odd field */
 494         u8 even[2];     /* two-byte payload of even field */;
 495 };
 496
 497 struct vbi_vps {
 498         u8 data[5];     /* five-byte VPS payload */
 499 };
 500
 501 struct vbi_info {
 502         /* VBI general data, does not change during streaming */
 503
 504         u32 raw_decoder_line_size;              /* raw VBI line size from digitizer */
 505         u8 raw_decoder_sav_odd_field;           /* raw VBI Start Active Video digitizer code of odd field */
 506         u8 raw_decoder_sav_even_field;          /* raw VBI Start Active Video digitizer code of even field */
 507         u32 sliced_decoder_line_size;           /* sliced VBI line size from digitizer */
 508         u8 sliced_decoder_sav_odd_field;        /* sliced VBI Start Active Video digitizer code of odd field */
 509         u8 sliced_decoder_sav_even_field;       /* sliced VBI Start Active Video digitizer code of even field */
 510
 511         u32 start[2];                           /* start of first VBI line in the odd/even fields */
 512         u32 count;                              /* number of VBI lines per field */
 513         u32 raw_size;                           /* size of raw VBI line from the digitizer */
 514         u32 sliced_size;                        /* size of sliced VBI line from the digitizer */
 515
 516         u32 dec_start;                          /* start in decoder memory of VBI re-insertion buffers */
 517         u32 enc_start;                          /* start in encoder memory of VBI capture buffers */
 518         u32 enc_size;                           /* size of VBI capture area */
 519         int fpi;                                /* number of VBI frames per interrupt */
 520
 521         struct v4l2_format in;                  /* current VBI capture format */
 522         struct v4l2_sliced_vbi_format *sliced_in; /* convenience pointer to sliced struct in vbi.in union */
 523         int insert_mpeg;                        /* if non-zero, then embed VBI data in MPEG stream */
 524
 525         /* Raw VBI compatibility hack */
 526
 527         u32 frame;                              /* frame counter hack needed for backwards compatibility
 528                                                    of old VBI software */
 529
 530         /* Sliced VBI output data */
 531
 532         struct vbi_cc cc_payload[256];          /* sliced VBI CC payload array: it is an array to
 533                                                    prevent dropping CC data if they couldn't be
 534                                                    processed fast enough */
 535         int cc_payload_idx;                     /* index in cc_payload */
 536         u8 cc_missing_cnt;                      /* counts number of frames without CC for passthrough mode */
 537         int wss_payload;                        /* sliced VBI WSS payload */
 538         u8 wss_missing_cnt;                     /* counts number of frames without WSS for passthrough mode */
 539         struct vbi_vps vps_payload;             /* sliced VBI VPS payload */
 540
 541         /* Sliced VBI capture data */
 542
 543         struct v4l2_sliced_vbi_data sliced_data[36];    /* sliced VBI storage for VBI encoder stream */
 544         struct v4l2_sliced_vbi_data sliced_dec_data[36];/* sliced VBI storage for VBI decoder stream */
 545
 546         /* VBI Embedding data */
 547
 548         /* Buffer for VBI data inserted into MPEG stream.
 549            The first byte is a dummy byte that's never used.
 550            The next 16 bytes contain the MPEG header for the VBI data,
 551            the remainder is the actual VBI data.
 552            The max size accepted by the MPEG VBI reinsertion turns out
 553            to be 1552 bytes, which happens to be 4 + (1 + 42) * (2 * 18) bytes,
 554            where 4 is a four byte header, 42 is the max sliced VBI payload, 1 is
 555            a single line header byte and 2 * 18 is the number of VBI lines per frame.
 556
 557            However, it seems that the data must be 1K aligned, so we have to
 558            pad the data until the 1 or 2 K boundary.
 559
 560            This pointer array will allocate 2049 bytes to store each VBI frame. */
 561         u8 *sliced_mpeg_data[IVTV_VBI_FRAMES];
 562         u32 sliced_mpeg_size[IVTV_VBI_FRAMES];
 563         struct ivtv_buffer sliced_mpeg_buf;     /* temporary buffer holding data from sliced_mpeg_data */
 564         u32 inserted_frame;                     /* index in sliced_mpeg_size of next sliced data
 565                                                    to be inserted in the MPEG stream */
 566 };
 567
 568 /* forward declaration of struct defined in ivtv-cards.h */
 569 struct ivtv_card;
 570
 571 /* Struct to hold info about ivtv cards */
 572 struct ivtv {
 573         /* General fixed card data */
 574         int num;                        /* board number, -1 during init! */
 575         char name[8];                   /* board name for printk and interrupts (e.g. 'ivtv0') */
 576         struct pci_dev *dev;            /* PCI device */
 577         const struct ivtv_card *card;   /* card information */
 578         const char *card_name;          /* full name of the card */
 579         u8 has_cx23415;                 /* 1 if it is a cx23415 based card, 0 for cx23416 */
 580         u8 pvr150_workaround;           /* 1 if the cx25840 needs to workaround a PVR150 bug */
 581         u8 nof_inputs;                  /* number of video inputs */
 582         u8 nof_audio_inputs;            /* number of audio inputs */
 583         u32 v4l2_cap;                   /* V4L2 capabilities of card */
 584         u32 hw_flags;                   /* hardware description of the board */
 585         int tunerid;                    /* userspace tuner ID for experimental Xceive tuner support */
 586         v4l2_std_id tuner_std;          /* the norm of the card's tuner (fixed) */
 587                                         /* controlling video decoder function */
 588         int (*video_dec_func)(struct ivtv *, unsigned int, void *);
 589         u32 base_addr;                  /* PCI resource base address */
 590         volatile void __iomem *enc_mem; /* pointer to mapped encoder memory */
 591         volatile void __iomem *dec_mem; /* pointer to mapped decoder memory */
 592         volatile void __iomem *reg_mem; /* pointer to mapped registers */
 593         struct ivtv_options options;    /* user options */
 594
 595
 596         /* High-level state info */
 597         unsigned long i_flags;          /* global ivtv flags */
 598         u8 is_50hz;                     /* 1 if the current capture standard is 50 Hz */
 599         u8 is_60hz                      /* 1 if the current capture standard is 60 Hz */;
 600         u8 is_out_50hz                  /* 1 if the current TV output standard is 50 Hz */;
 601         u8 is_out_60hz                  /* 1 if the current TV output standard is 60 Hz */;
 602         int output_mode;                /* decoder output mode: NONE, MPG, YUV, UDMA YUV, passthrough */
 603         u32 audio_input;                /* current audio input */
 604         u32 active_input;               /* current video input */
 605         u32 active_output;              /* current video output */
 606         v4l2_std_id std;                /* current capture TV standard */
 607         v4l2_std_id std_out;            /* current TV output standard */
 608         u8 audio_stereo_mode;           /* decoder setting how to handle stereo MPEG audio */
 609         u8 audio_bilingual_mode;        /* decoder setting how to handle bilingual MPEG audio */
 610         struct cx2341x_mpeg_params params;              /* current encoder parameters */
 611
 612
 613         /* Locking */
 614         spinlock_t lock;                /* lock access to this struct */
 615         struct mutex serialize_lock;    /* mutex used to serialize open/close/start/stop/ioctl operations */
 616
 617
 618         /* Streams */
 619         int stream_buf_size[IVTV_MAX_STREAMS];          /* stream buffer size */
 620         struct ivtv_stream streams[IVTV_MAX_STREAMS];   /* stream data */
 621         atomic_t capturing;             /* count number of active capture streams */
 622         atomic_t decoding;              /* count number of active decoding streams */
 623
 624
 625         /* Interrupts & DMA */
 626         u32 irqmask;                    /* active interrupts */
 627         u32 irq_rr_idx;                 /* round-robin stream index */
 628         struct workqueue_struct *irq_work_queues;       /* workqueue for PIO/YUV/VBI actions */
 629         struct work_struct irq_work_queue;              /* work entry */
 630         spinlock_t dma_reg_lock;        /* lock access to DMA engine registers */
 631         int cur_dma_stream;             /* index of current stream doing DMA (-1 if none) */
 632         int cur_pio_stream;             /* index of current stream doing PIO (-1 if none) */
 633         u32 dma_data_req_offset;        /* store offset in decoder memory of current DMA request */
 634         u32 dma_data_req_size;          /* store size of current DMA request */
 635         int dma_retries;                /* current DMA retry attempt */
 636         struct ivtv_user_dma udma;      /* user based DMA for OSD */
 637         struct timer_list dma_timer;    /* timer used to catch unfinished DMAs */
 638         u32 last_vsync_field;           /* last seen vsync field */
 639         wait_queue_head_t dma_waitq;    /* wake up when the current DMA is finished */
 640         wait_queue_head_t eos_waitq;    /* wake up when EOS arrives */
 641         wait_queue_head_t event_waitq;  /* wake up when the next decoder event arrives */
 642         wait_queue_head_t vsync_waitq;  /* wake up when the next decoder vsync arrives */
 643
 644
 645         /* Mailbox */
 646         struct ivtv_mailbox_data enc_mbox;              /* encoder mailboxes */
 647         struct ivtv_mailbox_data dec_mbox;              /* decoder mailboxes */
 648         struct ivtv_api_cache api_cache[256];           /* cached API commands */
 649
 650
 651         /* I2C */
 652         struct i2c_adapter i2c_adap;
 653         struct i2c_algo_bit_data i2c_algo;
 654         struct i2c_client i2c_client;
 655         struct i2c_client *i2c_clients[I2C_CLIENTS_MAX];/* pointers to all I2C clients */
 656         int i2c_state;                  /* i2c bit state */
 657         struct mutex i2c_bus_lock;      /* lock i2c bus */
 658
 659
 660         /* Program Index information */
 661         u32 pgm_info_offset;            /* start of pgm info in encoder memory */
 662         u32 pgm_info_num;               /* number of elements in the pgm cyclic buffer in encoder memory */
 663         u32 pgm_info_write_idx;         /* last index written by the card that was transferred to pgm_info[] */
 664         u32 pgm_info_read_idx;          /* last index in pgm_info read by the application */
 665         struct v4l2_enc_idx_entry pgm_info[IVTV_MAX_PGM_INDEX]; /* filled from the pgm cyclic buffer on the card */
 666
 667
 668         /* Miscellaneous */
 669         u32 open_id;                    /* incremented each time an open occurs, is >= 1 */
 670         struct v4l2_prio_state prio;    /* priority state */
 671         int search_pack_header;         /* 1 if ivtv_copy_buf_to_user() is scanning for a pack header (0xba) */
 672         int speed;                      /* current playback speed setting */
 673         u8 speed_mute_audio;            /* 1 if audio should be muted when fast forward */
 674         u64 mpg_data_received;          /* number of bytes received from the MPEG stream */
 675         u64 vbi_data_inserted;          /* number of VBI bytes inserted into the MPEG stream */
 676         u32 last_dec_timing[3];         /* cache last retrieved pts/scr/frame values */
 677         unsigned long dualwatch_jiffies;/* jiffies value of the previous dualwatch check */
 678         u16 dualwatch_stereo_mode;      /* current detected dualwatch stereo mode */
 679
 680
 681         /* VBI state info */
 682         struct vbi_info vbi;            /* VBI-specific data */
 683
 684
 685         /* YUV playback */
 686         struct yuv_playback_info yuv_info;              /* YUV playback data */
 687
 688
 689         /* OSD support */
 690         unsigned long osd_video_pbase;
 691         int osd_global_alpha_state;     /* 1 = global alpha is on */
 692         int osd_local_alpha_state;      /* 1 = local alpha is on */
 693         int osd_chroma_key_state;       /* 1 = chroma-keying is on */
 694         u8  osd_global_alpha;           /* current global alpha */
 695         u32 osd_chroma_key;             /* current chroma key */
 696         struct v4l2_rect osd_rect;      /* current OSD position and size */
 697         struct v4l2_rect main_rect;     /* current Main window position and size */
 698         struct osd_info *osd_info;      /* ivtvfb private OSD info */
 699 };
 700
 701 /* Globals */
 702 extern struct ivtv *ivtv_cards[];
 703 extern int ivtv_cards_active;
 704 extern int ivtv_first_minor;
 705 extern spinlock_t ivtv_cards_lock;
 706
 707 /*==============Prototypes==================*/
 708
 709 /* Hardware/IRQ */
 710 void ivtv_set_irq_mask(struct ivtv *itv, u32 mask);
 711 void ivtv_clear_irq_mask(struct ivtv *itv, u32 mask);
 712
 713 /* try to set output mode, return current mode. */
 714 int ivtv_set_output_mode(struct ivtv *itv, int mode);
 715
 716 /* return current output stream based on current mode */
 717 struct ivtv_stream *ivtv_get_output_stream(struct ivtv *itv);
 718
 719 /* Return non-zero if a signal is pending */
 720 int ivtv_msleep_timeout(unsigned int msecs, int intr);
 721
 722 /* Wait on queue, returns -EINTR if interrupted */
 723 int ivtv_waitq(wait_queue_head_t *waitq);
 724
 725 /* Read Hauppauge eeprom */
 726 struct tveeprom; /* forward reference */
 727 void ivtv_read_eeprom(struct ivtv *itv, struct tveeprom *tv);
 728
 729 /* First-open initialization: load firmware, init cx25840, etc. */
 730 int ivtv_init_on_first_open(struct ivtv *itv);
 731
 732 /* This is a PCI post thing, where if the pci register is not read, then
 733    the write doesn't always take effect right away. By reading back the
 734    register any pending PCI writes will be performed (in order), and so
 735    you can be sure that the writes are guaranteed to be done.
 736
 737    Rarely needed, only in some timing sensitive cases.
 738    Apparently if this is not done some motherboards seem
 739    to kill the firmware and get into the broken state until computer is
 740    rebooted. */
 741 #define write_sync(val, reg) \
 742         do { writel(val, reg); readl(reg); } while (0)
 743
 744 #define read_reg(reg) readl(itv->reg_mem + (reg))
 745 #define write_reg(val, reg) writel(val, itv->reg_mem + (reg))
 746 #define write_reg_sync(val, reg) \
 747         do { write_reg(val, reg); read_reg(reg); } while (0)
 748
 749 #define read_enc(addr) readl(itv->enc_mem + (u32)(addr))
 750 #define write_enc(val, addr) writel(val, itv->enc_mem + (u32)(addr))
 751 #define write_enc_sync(val, addr) \
 752         do { write_enc(val, addr); read_enc(addr); } while (0)
 753
 754 #define read_dec(addr) readl(itv->dec_mem + (u32)(addr))
 755 #define write_dec(val, addr) writel(val, itv->dec_mem + (u32)(addr))
 756 #define write_dec_sync(val, addr) \
 757         do { write_dec(val, addr); read_dec(addr); } while (0)
 758
 759 #endif