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/scatterlist.h>
  55 #include <linux/workqueue.h>
  56 #include <linux/mutex.h>
  57 #include <asm/uaccess.h>
  58 #include <asm/system.h>
  59
  60 #include <linux/dvb/video.h>
  61 #include <linux/dvb/audio.h>
  62 #include <media/v4l2-common.h>
  63 #include <media/tuner.h>
  64 #include <media/cx2341x.h>
  65
  66 #include <linux/ivtv.h>
  67
  68
  69 /* Memory layout */
  70 #define IVTV_ENCODER_OFFSET     0x00000000
  71 #define IVTV_ENCODER_SIZE       0x00800000      /* Total size is 0x01000000, but only first half is used */
  72 #define IVTV_DECODER_OFFSET     0x01000000
  73 #define IVTV_DECODER_SIZE       0x00800000      /* Total size is 0x01000000, but only first half is used */
  74 #define IVTV_REG_OFFSET         0x02000000
  75 #define IVTV_REG_SIZE           0x00010000
  76
  77 /* Maximum ivtv driver instances. Some people have a huge number of
  78    capture cards, so set this to a high value. */
  79 #define IVTV_MAX_CARDS 32
  80
  81 #define IVTV_ENC_STREAM_TYPE_MPG  0
  82 #define IVTV_ENC_STREAM_TYPE_YUV  1
  83 #define IVTV_ENC_STREAM_TYPE_VBI  2
  84 #define IVTV_ENC_STREAM_TYPE_PCM  3
  85 #define IVTV_ENC_STREAM_TYPE_RAD  4
  86 #define IVTV_DEC_STREAM_TYPE_MPG  5
  87 #define IVTV_DEC_STREAM_TYPE_VBI  6
  88 #define IVTV_DEC_STREAM_TYPE_VOUT 7
  89 #define IVTV_DEC_STREAM_TYPE_YUV  8
  90 #define IVTV_MAX_STREAMS          9
  91
  92 #define IVTV_DMA_SG_OSD_ENT     (2883584/PAGE_SIZE)     /* sg entities */
  93
  94 /* DMA Registers */
  95 #define IVTV_REG_DMAXFER        (0x0000)
  96 #define IVTV_REG_DMASTATUS      (0x0004)
  97 #define IVTV_REG_DECDMAADDR     (0x0008)
  98 #define IVTV_REG_ENCDMAADDR     (0x000c)
  99 #define IVTV_REG_DMACONTROL     (0x0010)
 100 #define IVTV_REG_IRQSTATUS      (0x0040)
 101 #define IVTV_REG_IRQMASK        (0x0048)
 102
 103 /* Setup Registers */
 104 #define IVTV_REG_ENC_SDRAM_REFRESH      (0x07F8)
 105 #define IVTV_REG_ENC_SDRAM_PRECHARGE    (0x07FC)
 106 #define IVTV_REG_DEC_SDRAM_REFRESH      (0x08F8)
 107 #define IVTV_REG_DEC_SDRAM_PRECHARGE    (0x08FC)
 108 #define IVTV_REG_VDM                    (0x2800)
 109 #define IVTV_REG_AO                     (0x2D00)
 110 #define IVTV_REG_BYTEFLUSH              (0x2D24)
 111 #define IVTV_REG_SPU                    (0x9050)
 112 #define IVTV_REG_HW_BLOCKS              (0x9054)
 113 #define IVTV_REG_VPU                    (0x9058)
 114 #define IVTV_REG_APU                    (0xA064)
 115
 116 /* i2c stuff */
 117 #define I2C_CLIENTS_MAX 16
 118
 119 /* debugging */
 120 extern int ivtv_debug;
 121
 122 #define IVTV_DBGFLG_WARN    (1 << 0)
 123 #define IVTV_DBGFLG_INFO    (1 << 1)
 124 #define IVTV_DBGFLG_MB      (1 << 2)
 125 #define IVTV_DBGFLG_IOCTL   (1 << 3)
 126 #define IVTV_DBGFLG_FILE    (1 << 4)
 127 #define IVTV_DBGFLG_DMA     (1 << 5)
 128 #define IVTV_DBGFLG_IRQ     (1 << 6)
 129 #define IVTV_DBGFLG_DEC     (1 << 7)
 130 #define IVTV_DBGFLG_YUV     (1 << 8)
 131 #define IVTV_DBGFLG_I2C     (1 << 9)
 132 /* Flag to turn on high volume debugging */
 133 #define IVTV_DBGFLG_HIGHVOL (1 << 10)
 134
 135 /* NOTE: extra space before comma in 'itv->num , ## args' is required for
 136    gcc-2.95, otherwise it won't compile. */
 137 #define IVTV_DEBUG(x, type, fmt, args...) \
 138         do { \
 139                 if ((x) & ivtv_debug) \
 140                         printk(KERN_INFO "ivtv%d " type ": " fmt, itv->num , ## args); \
 141         } while (0)
 142 #define IVTV_DEBUG_WARN(fmt, args...)  IVTV_DEBUG(IVTV_DBGFLG_WARN,  "warn",  fmt , ## args)
 143 #define IVTV_DEBUG_INFO(fmt, args...)  IVTV_DEBUG(IVTV_DBGFLG_INFO,  "info",  fmt , ## args)
 144 #define IVTV_DEBUG_MB(fmt, args...)    IVTV_DEBUG(IVTV_DBGFLG_MB,    "mb",    fmt , ## args)
 145 #define IVTV_DEBUG_DMA(fmt, args...)   IVTV_DEBUG(IVTV_DBGFLG_DMA,   "dma",   fmt , ## args)
 146 #define IVTV_DEBUG_IOCTL(fmt, args...) IVTV_DEBUG(IVTV_DBGFLG_IOCTL, "ioctl", fmt , ## args)
 147 #define IVTV_DEBUG_FILE(fmt, args...)  IVTV_DEBUG(IVTV_DBGFLG_FILE,  "file",  fmt , ## args)
 148 #define IVTV_DEBUG_I2C(fmt, args...)   IVTV_DEBUG(IVTV_DBGFLG_I2C,   "i2c",   fmt , ## args)
 149 #define IVTV_DEBUG_IRQ(fmt, args...)   IVTV_DEBUG(IVTV_DBGFLG_IRQ,   "irq",   fmt , ## args)
 150 #define IVTV_DEBUG_DEC(fmt, args...)   IVTV_DEBUG(IVTV_DBGFLG_DEC,   "dec",   fmt , ## args)
 151 #define IVTV_DEBUG_YUV(fmt, args...)   IVTV_DEBUG(IVTV_DBGFLG_YUV,   "yuv",   fmt , ## args)
 152
 153 #define IVTV_DEBUG_HIGH_VOL(x, type, fmt, args...) \
 154         do { \
 155                 if (((x) & ivtv_debug) && (ivtv_debug & IVTV_DBGFLG_HIGHVOL)) \
 156                         printk(KERN_INFO "ivtv%d " type ": " fmt, itv->num , ## args); \
 157         } while (0)
 158 #define IVTV_DEBUG_HI_WARN(fmt, args...)  IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_WARN,  "warn",  fmt , ## args)
 159 #define IVTV_DEBUG_HI_INFO(fmt, args...)  IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_INFO,  "info",  fmt , ## args)
 160 #define IVTV_DEBUG_HI_MB(fmt, args...)    IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_MB,    "mb",    fmt , ## args)
 161 #define IVTV_DEBUG_HI_DMA(fmt, args...)   IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_DMA,   "dma",   fmt , ## args)
 162 #define IVTV_DEBUG_HI_IOCTL(fmt, args...) IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_IOCTL, "ioctl", fmt , ## args)
 163 #define IVTV_DEBUG_HI_FILE(fmt, args...)  IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_FILE,  "file",  fmt , ## args)
 164 #define IVTV_DEBUG_HI_I2C(fmt, args...)   IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_I2C,   "i2c",   fmt , ## args)
 165 #define IVTV_DEBUG_HI_IRQ(fmt, args...)   IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_IRQ,   "irq",   fmt , ## args)
 166 #define IVTV_DEBUG_HI_DEC(fmt, args...)   IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_DEC,   "dec",   fmt , ## args)
 167 #define IVTV_DEBUG_HI_YUV(fmt, args...)   IVTV_DEBUG_HIGH_VOL(IVTV_DBGFLG_YUV,   "yuv",   fmt , ## args)
 168
 169 /* Standard kernel messages */
 170 #define IVTV_ERR(fmt, args...)      printk(KERN_ERR  "ivtv%d: " fmt, itv->num , ## args)
 171 #define IVTV_WARN(fmt, args...)     printk(KERN_WARNING "ivtv%d: " fmt, itv->num , ## args)
 172 #define IVTV_INFO(fmt, args...)     printk(KERN_INFO "ivtv%d: " fmt, itv->num , ## args)
 173
 174 /* output modes (cx23415 only) */
 175 #define OUT_NONE        0
 176 #define OUT_MPG         1
 177 #define OUT_YUV         2
 178 #define OUT_UDMA_YUV    3
 179 #define OUT_PASSTHROUGH 4
 180
 181 #define IVTV_MAX_PGM_INDEX (400)
 182
 183 struct ivtv_options {
 184         int kilobytes[IVTV_MAX_STREAMS];        /* size in kilobytes of each stream */
 185         int cardtype;                           /* force card type on load */
 186         int tuner;                              /* set tuner on load */
 187         int radio;                              /* enable/disable radio */
 188         int newi2c;                             /* new I2C algorithm */
 189 };
 190
 191 /* ivtv-specific mailbox template */
 192 struct ivtv_mailbox {
 193         u32 flags;
 194         u32 cmd;
 195         u32 retval;
 196         u32 timeout;
 197         u32 data[CX2341X_MBOX_MAX_DATA];
 198 };
 199
 200 struct ivtv_api_cache {
 201         unsigned long last_jiffies;             /* when last command was issued */
 202         u32 data[CX2341X_MBOX_MAX_DATA];        /* last sent api data */
 203 };
 204
 205 struct ivtv_mailbox_data {
 206         volatile struct ivtv_mailbox __iomem *mbox;
 207         /* Bits 0-2 are for the encoder mailboxes, 0-1 are for the decoder mailboxes.
 208            If the bit is set, then the corresponding mailbox is in use by the driver. */
 209         unsigned long busy;
 210         u8 max_mbox;
 211 };
 212
 213 /* per-buffer bit flags */
 214 #define IVTV_F_B_NEED_BUF_SWAP  (1 << 0)        /* this buffer should be byte swapped */
 215
 216 /* per-stream, s_flags */
 217 #define IVTV_F_S_DMA_PENDING    0       /* this stream has pending DMA */
 218 #define IVTV_F_S_DMA_HAS_VBI    1       /* the current DMA request also requests VBI data */
 219 #define IVTV_F_S_NEEDS_DATA     2       /* this decoding stream needs more data */
 220
 221 #define IVTV_F_S_CLAIMED        3       /* this stream is claimed */
 222 #define IVTV_F_S_STREAMING      4       /* the fw is decoding/encoding this stream */
 223 #define IVTV_F_S_INTERNAL_USE   5       /* this stream is used internally (sliced VBI processing) */
 224 #define IVTV_F_S_PASSTHROUGH    6       /* this stream is in passthrough mode */
 225 #define IVTV_F_S_STREAMOFF      7       /* signal end of stream EOS */
 226 #define IVTV_F_S_APPL_IO        8       /* this stream is used read/written by an application */
 227
 228 #define IVTV_F_S_PIO_PENDING    9       /* this stream has pending PIO */
 229 #define IVTV_F_S_PIO_HAS_VBI    1       /* the current PIO request also requests VBI data */
 230
 231 /* per-ivtv, i_flags */
 232 #define IVTV_F_I_DMA               0    /* DMA in progress */
 233 #define IVTV_F_I_UDMA              1    /* UDMA in progress */
 234 #define IVTV_F_I_UDMA_PENDING      2    /* UDMA pending */
 235 #define IVTV_F_I_SPEED_CHANGE      3    /* a speed change is in progress */
 236 #define IVTV_F_I_EOS               4    /* end of encoder stream reached */
 237 #define IVTV_F_I_RADIO_USER        5    /* the radio tuner is selected */
 238 #define IVTV_F_I_DIG_RST           6    /* reset digitizer */
 239 #define IVTV_F_I_DEC_YUV           7    /* YUV instead of MPG is being decoded */
 240 #define IVTV_F_I_UPDATE_CC         9    /* CC should be updated */
 241 #define IVTV_F_I_UPDATE_WSS        10   /* WSS should be updated */
 242 #define IVTV_F_I_UPDATE_VPS        11   /* VPS should be updated */
 243 #define IVTV_F_I_DECODING_YUV      12   /* this stream is YUV frame decoding */
 244 #define IVTV_F_I_ENC_PAUSED        13   /* the encoder is paused */
 245 #define IVTV_F_I_VALID_DEC_TIMINGS 14   /* last_dec_timing is valid */
 246 #define IVTV_F_I_HAVE_WORK         15   /* used in the interrupt handler: there is work to be done */
 247 #define IVTV_F_I_WORK_HANDLER_VBI  16   /* there is work to be done for VBI */
 248 #define IVTV_F_I_WORK_HANDLER_YUV  17   /* there is work to be done for YUV */
 249 #define IVTV_F_I_WORK_HANDLER_PIO  18   /* there is work to be done for PIO */
 250 #define IVTV_F_I_PIO               19   /* PIO in progress */
 251 #define IVTV_F_I_DEC_PAUSED        20   /* the decoder is paused */
 252 #define IVTV_F_I_INITED            21   /* set after first open */
 253 #define IVTV_F_I_FAILED            22   /* set if first open failed */
 254
 255 /* Event notifications */
 256 #define IVTV_F_I_EV_DEC_STOPPED    28   /* decoder stopped event */
 257 #define IVTV_F_I_EV_VSYNC          29   /* VSYNC event */
 258 #define IVTV_F_I_EV_VSYNC_FIELD    30   /* VSYNC event field (0 = first, 1 = second field) */
 259 #define IVTV_F_I_EV_VSYNC_ENABLED  31   /* VSYNC event enabled */
 260
 261 /* Scatter-Gather array element, used in DMA transfers */
 262 struct ivtv_sg_element {
 263         u32 src;
 264         u32 dst;
 265         u32 size;
 266 };
 267
 268 struct ivtv_user_dma {
 269         struct mutex lock;
 270         int page_count;
 271         struct page *map[IVTV_DMA_SG_OSD_ENT];
 272         /* Needed when dealing with highmem userspace buffers */
 273         struct page *bouncemap[IVTV_DMA_SG_OSD_ENT];
 274
 275         /* Base Dev SG Array for cx23415/6 */
 276         struct ivtv_sg_element SGarray[IVTV_DMA_SG_OSD_ENT];
 277         dma_addr_t SG_handle;
 278         int SG_length;
 279
 280         /* SG List of Buffers */
 281         struct scatterlist SGlist[IVTV_DMA_SG_OSD_ENT];
 282 };
 283
 284 struct ivtv_dma_page_info {
 285         unsigned long uaddr;
 286         unsigned long first;
 287         unsigned long last;
 288         unsigned int offset;
 289         unsigned int tail;
 290         int page_count;
 291 };
 292
 293 struct ivtv_buffer {
 294         struct list_head list;
 295         dma_addr_t dma_handle;
 296         unsigned short b_flags;
 297         unsigned short dma_xfer_cnt;
 298         char *buf;
 299         u32 bytesused;
 300         u32 readpos;
 301 };
 302
 303 struct ivtv_queue {
 304         struct list_head list;          /* the list of buffers in this queue */
 305         u32 buffers;                    /* number of buffers in this queue */
 306         u32 length;                     /* total number of bytes of available buffer space */
 307         u32 bytesused;                  /* total number of bytes used in this queue */
 308 };
 309
 310 struct ivtv;                            /* forward reference */
 311
 312 struct ivtv_stream {
 313         /* These first four fields are always set, even if the stream
 314            is not actually created. */
 315         struct video_device *v4l2dev;   /* NULL when stream not created */
 316         struct ivtv *itv;               /* for ease of use */
 317         const char *name;               /* name of the stream */
 318         int type;                       /* stream type */
 319
 320         u32 id;
 321         spinlock_t qlock;               /* locks access to the queues */
 322         unsigned long s_flags;          /* status flags, see above */
 323         int dma;                        /* can be PCI_DMA_TODEVICE, PCI_DMA_FROMDEVICE or PCI_DMA_NONE */
 324         u32 pending_offset;
 325         u32 pending_backup;
 326         u64 pending_pts;
 327
 328         u32 dma_offset;
 329         u32 dma_backup;
 330         u64 dma_pts;
 331
 332         int subtype;
 333         wait_queue_head_t waitq;
 334         u32 dma_last_offset;
 335
 336         /* Buffer Stats */
 337         u32 buffers;
 338         u32 buf_size;
 339         u32 buffers_stolen;
 340
 341         /* Buffer Queues */
 342         struct ivtv_queue q_free;       /* free buffers */
 343         struct ivtv_queue q_full;       /* full buffers */
 344         struct ivtv_queue q_io;         /* waiting for I/O */
 345         struct ivtv_queue q_dma;        /* waiting for DMA */
 346         struct ivtv_queue q_predma;     /* waiting for DMA */
 347
 348         /* DMA xfer counter, buffers belonging to the same DMA
 349            xfer will have the same dma_xfer_cnt. */
 350         u16 dma_xfer_cnt;
 351
 352         /* Base Dev SG Array for cx23415/6 */
 353         struct ivtv_sg_element *sg_pending;
 354         struct ivtv_sg_element *sg_processing;
 355         struct ivtv_sg_element *sg_dma;
 356         dma_addr_t sg_handle;
 357         int sg_pending_size;
 358         int sg_processing_size;
 359         int sg_processed;
 360
 361         /* SG List of Buffers */
 362         struct scatterlist *SGlist;
 363 };
 364
 365 struct ivtv_open_id {
 366         u32 open_id;                    /* unique ID for this file descriptor */
 367         int type;                       /* stream type */
 368         int yuv_frames;                 /* 1: started OUT_UDMA_YUV output mode */
 369         enum v4l2_priority prio;        /* priority */
 370         struct ivtv *itv;
 371 };
 372
 373 struct yuv_frame_info
 374 {
 375         u32 update;
 376         s32 src_x;
 377         s32 src_y;
 378         u32 src_w;
 379         u32 src_h;
 380         s32 dst_x;
 381         s32 dst_y;
 382         u32 dst_w;
 383         u32 dst_h;
 384         s32 pan_x;
 385         s32 pan_y;
 386         u32 vis_w;
 387         u32 vis_h;
 388         u32 interlaced_y;
 389         u32 interlaced_uv;
 390         s32 tru_x;
 391         u32 tru_w;
 392         u32 tru_h;
 393         u32 offset_y;
 394         s32 lace_mode;
 395         u32 sync_field;
 396         u32 delay;
 397         u32 interlaced;
 398 };
 399
 400 #define IVTV_YUV_MODE_INTERLACED        0x00
 401 #define IVTV_YUV_MODE_PROGRESSIVE       0x01
 402 #define IVTV_YUV_MODE_AUTO              0x02
 403 #define IVTV_YUV_MODE_MASK              0x03
 404
 405 #define IVTV_YUV_SYNC_EVEN              0x00
 406 #define IVTV_YUV_SYNC_ODD               0x04
 407 #define IVTV_YUV_SYNC_MASK              0x04
 408
 409 #define IVTV_YUV_BUFFERS 8
 410
 411 struct yuv_playback_info
 412 {
 413         u32 reg_2834;
 414         u32 reg_2838;
 415         u32 reg_283c;
 416         u32 reg_2840;
 417         u32 reg_2844;
 418         u32 reg_2848;
 419         u32 reg_2854;
 420         u32 reg_285c;
 421         u32 reg_2864;
 422
 423         u32 reg_2870;
 424         u32 reg_2874;
 425         u32 reg_2890;
 426         u32 reg_2898;
 427         u32 reg_289c;
 428
 429         u32 reg_2918;
 430         u32 reg_291c;
 431         u32 reg_2920;
 432         u32 reg_2924;
 433         u32 reg_2928;
 434         u32 reg_292c;
 435         u32 reg_2930;
 436
 437         u32 reg_2934;
 438
 439         u32 reg_2938;
 440         u32 reg_293c;
 441         u32 reg_2940;
 442         u32 reg_2944;
 443         u32 reg_2948;
 444         u32 reg_294c;
 445         u32 reg_2950;
 446         u32 reg_2954;
 447         u32 reg_2958;
 448         u32 reg_295c;
 449         u32 reg_2960;
 450         u32 reg_2964;
 451         u32 reg_2968;
 452         u32 reg_296c;
 453
 454         u32 reg_2970;
 455
 456         int v_filter_1;
 457         int v_filter_2;
 458         int h_filter;
 459
 460         u32 osd_x_offset;
 461         u32 osd_y_offset;
 462
 463         u32 osd_x_pan;
 464         u32 osd_y_pan;
 465
 466         u32 osd_vis_w;
 467         u32 osd_vis_h;
 468
 469         u32 osd_full_w;
 470         u32 osd_full_h;
 471
 472         int decode_height;
 473
 474         int lace_mode;
 475         int lace_threshold;
 476         int lace_sync_field;
 477
 478         atomic_t next_dma_frame;
 479         atomic_t next_fill_frame;
 480
 481         u32 yuv_forced_update;
 482         int update_frame;
 483
 484         u8 fields_lapsed;   /* Counter used when delaying a frame */
 485
 486         struct yuv_frame_info new_frame_info[IVTV_YUV_BUFFERS];
 487         struct yuv_frame_info old_frame_info;
 488         struct yuv_frame_info old_frame_info_args;
 489
 490         void *blanking_ptr;
 491         dma_addr_t blanking_dmaptr;
 492
 493         int stream_size;
 494
 495         u8 draw_frame; /* PVR350 buffer to draw into */
 496         u8 max_frames_buffered; /* Maximum number of frames to buffer */
 497
 498         struct v4l2_rect main_rect;
 499         u32 v4l2_src_w;
 500         u32 v4l2_src_h;
 501 };
 502
 503 #define IVTV_VBI_FRAMES 32
 504
 505 /* VBI data */
 506 struct vbi_cc {
 507         u8 odd[2];      /* two-byte payload of odd field */
 508         u8 even[2];     /* two-byte payload of even field */;
 509 };
 510
 511 struct vbi_vps {
 512         u8 data[5];     /* five-byte VPS payload */
 513 };
 514
 515 struct vbi_info {
 516         /* VBI general data, does not change during streaming */
 517
 518         u32 raw_decoder_line_size;              /* raw VBI line size from digitizer */
 519         u8 raw_decoder_sav_odd_field;           /* raw VBI Start Active Video digitizer code of odd field */
 520         u8 raw_decoder_sav_even_field;          /* raw VBI Start Active Video digitizer code of even field */
 521         u32 sliced_decoder_line_size;           /* sliced VBI line size from digitizer */
 522         u8 sliced_decoder_sav_odd_field;        /* sliced VBI Start Active Video digitizer code of odd field */
 523         u8 sliced_decoder_sav_even_field;       /* sliced VBI Start Active Video digitizer code of even field */
 524
 525         u32 start[2];                           /* start of first VBI line in the odd/even fields */
 526         u32 count;                              /* number of VBI lines per field */
 527         u32 raw_size;                           /* size of raw VBI line from the digitizer */
 528         u32 sliced_size;                        /* size of sliced VBI line from the digitizer */
 529
 530         u32 dec_start;                          /* start in decoder memory of VBI re-insertion buffers */
 531         u32 enc_start;                          /* start in encoder memory of VBI capture buffers */
 532         u32 enc_size;                           /* size of VBI capture area */
 533         int fpi;                                /* number of VBI frames per interrupt */
 534
 535         struct v4l2_format in;                  /* current VBI capture format */
 536         struct v4l2_sliced_vbi_format *sliced_in; /* convenience pointer to sliced struct in vbi.in union */
 537         int insert_mpeg;                        /* if non-zero, then embed VBI data in MPEG stream */
 538
 539         /* Raw VBI compatibility hack */
 540
 541         u32 frame;                              /* frame counter hack needed for backwards compatibility
 542                                                    of old VBI software */
 543
 544         /* Sliced VBI output data */
 545
 546         struct vbi_cc cc_payload[256];          /* sliced VBI CC payload array: it is an array to
 547                                                    prevent dropping CC data if they couldn't be
 548                                                    processed fast enough */
 549         int cc_payload_idx;                     /* index in cc_payload */
 550         u8 cc_missing_cnt;                      /* counts number of frames without CC for passthrough mode */
 551         int wss_payload;                        /* sliced VBI WSS payload */
 552         u8 wss_missing_cnt;                     /* counts number of frames without WSS for passthrough mode */
 553         struct vbi_vps vps_payload;             /* sliced VBI VPS payload */
 554
 555         /* Sliced VBI capture data */
 556
 557         struct v4l2_sliced_vbi_data sliced_data[36];    /* sliced VBI storage for VBI encoder stream */
 558         struct v4l2_sliced_vbi_data sliced_dec_data[36];/* sliced VBI storage for VBI decoder stream */
 559
 560         /* VBI Embedding data */
 561
 562         /* Buffer for VBI data inserted into MPEG stream.
 563            The first byte is a dummy byte that's never used.
 564            The next 16 bytes contain the MPEG header for the VBI data,
 565            the remainder is the actual VBI data.
 566            The max size accepted by the MPEG VBI reinsertion turns out
 567            to be 1552 bytes, which happens to be 4 + (1 + 42) * (2 * 18) bytes,
 568            where 4 is a four byte header, 42 is the max sliced VBI payload, 1 is
 569            a single line header byte and 2 * 18 is the number of VBI lines per frame.
 570
 571            However, it seems that the data must be 1K aligned, so we have to
 572            pad the data until the 1 or 2 K boundary.
 573
 574            This pointer array will allocate 2049 bytes to store each VBI frame. */
 575         u8 *sliced_mpeg_data[IVTV_VBI_FRAMES];
 576         u32 sliced_mpeg_size[IVTV_VBI_FRAMES];
 577         struct ivtv_buffer sliced_mpeg_buf;     /* temporary buffer holding data from sliced_mpeg_data */
 578         u32 inserted_frame;                     /* index in sliced_mpeg_size of next sliced data
 579                                                    to be inserted in the MPEG stream */
 580 };
 581
 582 /* forward declaration of struct defined in ivtv-cards.h */
 583 struct ivtv_card;
 584
 585 /* Struct to hold info about ivtv cards */
 586 struct ivtv {
 587         /* General fixed card data */
 588         int num;                        /* board number, -1 during init! */
 589         char name[8];                   /* board name for printk and interrupts (e.g. 'ivtv0') */
 590         struct pci_dev *dev;            /* PCI device */
 591         const struct ivtv_card *card;   /* card information */
 592         const char *card_name;          /* full name of the card */
 593         const struct ivtv_card_tuner_i2c *card_i2c; /* i2c addresses to probe for tuner */
 594         u8 has_cx23415;                 /* 1 if it is a cx23415 based card, 0 for cx23416 */
 595         u8 pvr150_workaround;           /* 1 if the cx25840 needs to workaround a PVR150 bug */
 596         u8 nof_inputs;                  /* number of video inputs */
 597         u8 nof_audio_inputs;            /* number of audio inputs */
 598         u32 v4l2_cap;                   /* V4L2 capabilities of card */
 599         u32 hw_flags;                   /* hardware description of the board */
 600         v4l2_std_id tuner_std;          /* the norm of the card's tuner (fixed) */
 601                                         /* controlling video decoder function */
 602         int (*video_dec_func)(struct ivtv *, unsigned int, void *);
 603         u32 base_addr;                  /* PCI resource base address */
 604         volatile void __iomem *enc_mem; /* pointer to mapped encoder memory */
 605         volatile void __iomem *dec_mem; /* pointer to mapped decoder memory */
 606         volatile void __iomem *reg_mem; /* pointer to mapped registers */
 607         struct ivtv_options options;    /* user options */
 608
 609
 610         /* High-level state info */
 611         unsigned long i_flags;          /* global ivtv flags */
 612         u8 is_50hz;                     /* 1 if the current capture standard is 50 Hz */
 613         u8 is_60hz                      /* 1 if the current capture standard is 60 Hz */;
 614         u8 is_out_50hz                  /* 1 if the current TV output standard is 50 Hz */;
 615         u8 is_out_60hz                  /* 1 if the current TV output standard is 60 Hz */;
 616         int output_mode;                /* decoder output mode: NONE, MPG, YUV, UDMA YUV, passthrough */
 617         u32 audio_input;                /* current audio input */
 618         u32 active_input;               /* current video input */
 619         u32 active_output;              /* current video output */
 620         v4l2_std_id std;                /* current capture TV standard */
 621         v4l2_std_id std_out;            /* current TV output standard */
 622         u8 audio_stereo_mode;           /* decoder setting how to handle stereo MPEG audio */
 623         u8 audio_bilingual_mode;        /* decoder setting how to handle bilingual MPEG audio */
 624         struct cx2341x_mpeg_params params;              /* current encoder parameters */
 625
 626
 627         /* Locking */
 628         spinlock_t lock;                /* lock access to this struct */
 629         struct mutex serialize_lock;    /* mutex used to serialize open/close/start/stop/ioctl operations */
 630
 631
 632         /* Streams */
 633         int stream_buf_size[IVTV_MAX_STREAMS];          /* stream buffer size */
 634         struct ivtv_stream streams[IVTV_MAX_STREAMS];   /* stream data */
 635         atomic_t capturing;             /* count number of active capture streams */
 636         atomic_t decoding;              /* count number of active decoding streams */
 637
 638
 639         /* Interrupts & DMA */
 640         u32 irqmask;                    /* active interrupts */
 641         u32 irq_rr_idx;                 /* round-robin stream index */
 642         struct workqueue_struct *irq_work_queues;       /* workqueue for PIO/YUV/VBI actions */
 643         struct work_struct irq_work_queue;              /* work entry */
 644         spinlock_t dma_reg_lock;        /* lock access to DMA engine registers */
 645         int cur_dma_stream;             /* index of current stream doing DMA (-1 if none) */
 646         int cur_pio_stream;             /* index of current stream doing PIO (-1 if none) */
 647         u32 dma_data_req_offset;        /* store offset in decoder memory of current DMA request */
 648         u32 dma_data_req_size;          /* store size of current DMA request */
 649         int dma_retries;                /* current DMA retry attempt */
 650         struct ivtv_user_dma udma;      /* user based DMA for OSD */
 651         struct timer_list dma_timer;    /* timer used to catch unfinished DMAs */
 652         u32 last_vsync_field;           /* last seen vsync field */
 653         wait_queue_head_t dma_waitq;    /* wake up when the current DMA is finished */
 654         wait_queue_head_t eos_waitq;    /* wake up when EOS arrives */
 655         wait_queue_head_t event_waitq;  /* wake up when the next decoder event arrives */
 656         wait_queue_head_t vsync_waitq;  /* wake up when the next decoder vsync arrives */
 657
 658
 659         /* Mailbox */
 660         struct ivtv_mailbox_data enc_mbox;              /* encoder mailboxes */
 661         struct ivtv_mailbox_data dec_mbox;              /* decoder mailboxes */
 662         struct ivtv_api_cache api_cache[256];           /* cached API commands */
 663
 664
 665         /* I2C */
 666         struct i2c_adapter i2c_adap;
 667         struct i2c_algo_bit_data i2c_algo;
 668         struct i2c_client i2c_client;
 669         struct i2c_client *i2c_clients[I2C_CLIENTS_MAX];/* pointers to all I2C clients */
 670         int i2c_state;                  /* i2c bit state */
 671         struct mutex i2c_bus_lock;      /* lock i2c bus */
 672
 673
 674         /* Program Index information */
 675         u32 pgm_info_offset;            /* start of pgm info in encoder memory */
 676         u32 pgm_info_num;               /* number of elements in the pgm cyclic buffer in encoder memory */
 677         u32 pgm_info_write_idx;         /* last index written by the card that was transferred to pgm_info[] */
 678         u32 pgm_info_read_idx;          /* last index in pgm_info read by the application */
 679         struct v4l2_enc_idx_entry pgm_info[IVTV_MAX_PGM_INDEX]; /* filled from the pgm cyclic buffer on the card */
 680
 681
 682         /* Miscellaneous */
 683         u32 open_id;                    /* incremented each time an open occurs, is >= 1 */
 684         struct v4l2_prio_state prio;    /* priority state */
 685         int search_pack_header;         /* 1 if ivtv_copy_buf_to_user() is scanning for a pack header (0xba) */
 686         int speed;                      /* current playback speed setting */
 687         u8 speed_mute_audio;            /* 1 if audio should be muted when fast forward */
 688         u64 mpg_data_received;          /* number of bytes received from the MPEG stream */
 689         u64 vbi_data_inserted;          /* number of VBI bytes inserted into the MPEG stream */
 690         u32 last_dec_timing[3];         /* cache last retrieved pts/scr/frame values */
 691         unsigned long dualwatch_jiffies;/* jiffies value of the previous dualwatch check */
 692         u16 dualwatch_stereo_mode;      /* current detected dualwatch stereo mode */
 693
 694
 695         /* VBI state info */
 696         struct vbi_info vbi;            /* VBI-specific data */
 697
 698
 699         /* YUV playback */
 700         struct yuv_playback_info yuv_info;              /* YUV playback data */
 701
 702
 703         /* OSD support */
 704         unsigned long osd_video_pbase;
 705         int osd_global_alpha_state;     /* 1 = global alpha is on */
 706         int osd_local_alpha_state;      /* 1 = local alpha is on */
 707         int osd_chroma_key_state;       /* 1 = chroma-keying is on */
 708         u8  osd_global_alpha;           /* current global alpha */
 709         u32 osd_chroma_key;             /* current chroma key */
 710         struct v4l2_rect osd_rect;      /* current OSD position and size */
 711         struct v4l2_rect main_rect;     /* current Main window position and size */
 712         struct osd_info *osd_info;      /* ivtvfb private OSD info */
 713 };
 714
 715 /* Globals */
 716 extern struct ivtv *ivtv_cards[];
 717 extern int ivtv_cards_active;
 718 extern int ivtv_first_minor;
 719 extern spinlock_t ivtv_cards_lock;
 720
 721 /*==============Prototypes==================*/
 722
 723 /* Hardware/IRQ */
 724 void ivtv_set_irq_mask(struct ivtv *itv, u32 mask);
 725 void ivtv_clear_irq_mask(struct ivtv *itv, u32 mask);
 726
 727 /* try to set output mode, return current mode. */
 728 int ivtv_set_output_mode(struct ivtv *itv, int mode);
 729
 730 /* return current output stream based on current mode */
 731 struct ivtv_stream *ivtv_get_output_stream(struct ivtv *itv);
 732
 733 /* Return non-zero if a signal is pending */
 734 int ivtv_msleep_timeout(unsigned int msecs, int intr);
 735
 736 /* Wait on queue, returns -EINTR if interrupted */
 737 int ivtv_waitq(wait_queue_head_t *waitq);
 738
 739 /* Read Hauppauge eeprom */
 740 struct tveeprom; /* forward reference */
 741 void ivtv_read_eeprom(struct ivtv *itv, struct tveeprom *tv);
 742
 743 /* First-open initialization: load firmware, init cx25840, etc. */
 744 int ivtv_init_on_first_open(struct ivtv *itv);
 745
 746 /* This is a PCI post thing, where if the pci register is not read, then
 747    the write doesn't always take effect right away. By reading back the
 748    register any pending PCI writes will be performed (in order), and so
 749    you can be sure that the writes are guaranteed to be done.
 750
 751    Rarely needed, only in some timing sensitive cases.
 752    Apparently if this is not done some motherboards seem
 753    to kill the firmware and get into the broken state until computer is
 754    rebooted. */
 755 #define write_sync(val, reg) \
 756         do { writel(val, reg); readl(reg); } while (0)
 757
 758 #define read_reg(reg) readl(itv->reg_mem + (reg))
 759 #define write_reg(val, reg) writel(val, itv->reg_mem + (reg))
 760 #define write_reg_sync(val, reg) \
 761         do { write_reg(val, reg); read_reg(reg); } while (0)
 762
 763 #define read_enc(addr) readl(itv->enc_mem + (u32)(addr))
 764 #define write_enc(val, addr) writel(val, itv->enc_mem + (u32)(addr))
 765 #define write_enc_sync(val, addr) \
 766         do { write_enc(val, addr); read_enc(addr); } while (0)
 767
 768 #define read_dec(addr) readl(itv->dec_mem + (u32)(addr))
 769 #define write_dec(val, addr) writel(val, itv->dec_mem + (u32)(addr))
 770 #define write_dec_sync(val, addr) \
 771         do { write_dec(val, addr); read_dec(addr); } while (0)
 772
 773 #endif