drivers/isdn/hardware/mISDN/hfcsusb.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * hfcsusb.h, HFC-S USB mISDN driver
   4  */
   5
   6 #ifndef __HFCSUSB_H__
   7 #define __HFCSUSB_H__
   8
   9
  10 #define DRIVER_NAME "HFC-S_USB"
  11
  12 #define DBG_HFC_CALL_TRACE      0x00010000
  13 #define DBG_HFC_FIFO_VERBOSE    0x00020000
  14 #define DBG_HFC_USB_VERBOSE     0x00100000
  15 #define DBG_HFC_URB_INFO        0x00200000
  16 #define DBG_HFC_URB_ERROR       0x00400000
  17
  18 #define DEFAULT_TRANSP_BURST_SZ 128
  19
  20 #define HFC_CTRL_TIMEOUT        20      /* 5ms timeout writing/reading regs */
  21 #define CLKDEL_TE               0x0f    /* CLKDEL in TE mode */
  22 #define CLKDEL_NT               0x6c    /* CLKDEL in NT mode */
  23
  24 /* hfcsusb Layer1 commands */
  25 #define HFC_L1_ACTIVATE_TE              1
  26 #define HFC_L1_ACTIVATE_NT              2
  27 #define HFC_L1_DEACTIVATE_NT            3
  28 #define HFC_L1_FORCE_DEACTIVATE_TE      4
  29
  30 /* cmd FLAGS in HFCUSB_STATES register */
  31 #define HFCUSB_LOAD_STATE       0x10
  32 #define HFCUSB_ACTIVATE         0x20
  33 #define HFCUSB_DO_ACTION        0x40
  34 #define HFCUSB_NT_G2_G3         0x80
  35
  36 /* timers */
  37 #define NT_ACTIVATION_TIMER     0x01    /* enables NT mode activation Timer */
  38 #define NT_T1_COUNT             10
  39
  40 #define MAX_BCH_SIZE            2048    /* allowed B-channel packet size */
  41
  42 #define HFCUSB_RX_THRESHOLD     64      /* threshold for fifo report bit rx */
  43 #define HFCUSB_TX_THRESHOLD     96      /* threshold for fifo report bit tx */
  44
  45 #define HFCUSB_CHIP_ID          0x16    /* Chip ID register index */
  46 #define HFCUSB_CIRM             0x00    /* cirm register index */
  47 #define HFCUSB_USB_SIZE         0x07    /* int length register */
  48 #define HFCUSB_USB_SIZE_I       0x06    /* iso length register */
  49 #define HFCUSB_F_CROSS          0x0b    /* bit order register */
  50 #define HFCUSB_CLKDEL           0x37    /* bit delay register */
  51 #define HFCUSB_CON_HDLC         0xfa    /* channel connect register */
  52 #define HFCUSB_HDLC_PAR         0xfb
  53 #define HFCUSB_SCTRL            0x31    /* S-bus control register (tx) */
  54 #define HFCUSB_SCTRL_E          0x32    /* same for E and special funcs */
  55 #define HFCUSB_SCTRL_R          0x33    /* S-bus control register (rx) */
  56 #define HFCUSB_F_THRES          0x0c    /* threshold register */
  57 #define HFCUSB_FIFO             0x0f    /* fifo select register */
  58 #define HFCUSB_F_USAGE          0x1a    /* fifo usage register */
  59 #define HFCUSB_MST_MODE0        0x14
  60 #define HFCUSB_MST_MODE1        0x15
  61 #define HFCUSB_P_DATA           0x1f
  62 #define HFCUSB_INC_RES_F        0x0e
  63 #define HFCUSB_B1_SSL           0x20
  64 #define HFCUSB_B2_SSL           0x21
  65 #define HFCUSB_B1_RSL           0x24
  66 #define HFCUSB_B2_RSL           0x25
  67 #define HFCUSB_STATES           0x30
  68
  69
  70 #define HFCUSB_CHIPID           0x40    /* ID value of HFC-S USB */
  71
  72 /* fifo registers */
  73 #define HFCUSB_NUM_FIFOS        8       /* maximum number of fifos */
  74 #define HFCUSB_B1_TX            0       /* index for B1 transmit bulk/int */
  75 #define HFCUSB_B1_RX            1       /* index for B1 receive bulk/int */
  76 #define HFCUSB_B2_TX            2
  77 #define HFCUSB_B2_RX            3
  78 #define HFCUSB_D_TX             4
  79 #define HFCUSB_D_RX             5
  80 #define HFCUSB_PCM_TX           6
  81 #define HFCUSB_PCM_RX           7
  82
  83
  84 #define USB_INT         0
  85 #define USB_BULK        1
  86 #define USB_ISOC        2
  87
  88 #define ISOC_PACKETS_D  8
  89 #define ISOC_PACKETS_B  8
  90 #define ISO_BUFFER_SIZE 128
  91
  92 /* defines how much ISO packets are handled in one URB */
  93 static int iso_packets[8] =
  94 { ISOC_PACKETS_B, ISOC_PACKETS_B, ISOC_PACKETS_B, ISOC_PACKETS_B,
  95   ISOC_PACKETS_D, ISOC_PACKETS_D, ISOC_PACKETS_D, ISOC_PACKETS_D
  96 };
  97
  98
  99 /* Fifo flow Control for TX ISO */
 100 #define SINK_MAX        68
 101 #define SINK_MIN        48
 102 #define SINK_DMIN       12
 103 #define SINK_DMAX       18
 104 #define BITLINE_INF     (-96 * 8)
 105
 106 /* HFC-S USB register access by Control-URSs */
 107 #define write_reg_atomic(a, b, c)                                       \
 108         usb_control_msg((a)->dev, (a)->ctrl_out_pipe, 0, 0x40, (c), (b), \
 109                         0, 0, HFC_CTRL_TIMEOUT)
 110 #define read_reg_atomic(a, b, c)                                        \
 111         usb_control_msg((a)->dev, (a)->ctrl_in_pipe, 1, 0xC0, 0, (b), (c), \
 112                         1, HFC_CTRL_TIMEOUT)
 113 #define HFC_CTRL_BUFSIZE 64
 114
 115 struct ctrl_buf {
 116         __u8 hfcs_reg;          /* register number */
 117         __u8 reg_val;           /* value to be written (or read) */
 118 };
 119
 120 /*
 121  * URB error codes
 122  * Used to represent a list of values and their respective symbolic names
 123  */
 124 struct hfcusb_symbolic_list {
 125         const int num;
 126         const char *name;
 127 };
 128
 129 static struct hfcusb_symbolic_list urb_errlist[] = {
 130         {-ENOMEM, "No memory for allocation of internal structures"},
 131         {-ENOSPC, "The host controller's bandwidth is already consumed"},
 132         {-ENOENT, "URB was canceled by unlink_urb"},
 133         {-EXDEV, "ISO transfer only partially completed"},
 134         {-EAGAIN, "Too match scheduled for the future"},
 135         {-ENXIO, "URB already queued"},
 136         {-EFBIG, "Too much ISO frames requested"},
 137         {-ENOSR, "Buffer error (overrun)"},
 138         {-EPIPE, "Specified endpoint is stalled (device not responding)"},
 139         {-EOVERFLOW, "Babble (bad cable?)"},
 140         {-EPROTO, "Bit-stuff error (bad cable?)"},
 141         {-EILSEQ, "CRC/Timeout"},
 142         {-ETIMEDOUT, "NAK (device does not respond)"},
 143         {-ESHUTDOWN, "Device unplugged"},
 144         {-1, NULL}
 145 };
 146
 147 static inline const char *
 148 symbolic(struct hfcusb_symbolic_list list[], const int num)
 149 {
 150         int i;
 151         for (i = 0; list[i].name != NULL; i++)
 152                 if (list[i].num == num)
 153                         return list[i].name;
 154         return "<unknown USB Error>";
 155 }
 156
 157 /* USB descriptor need to contain one of the following EndPoint combination: */
 158 #define CNF_4INT3ISO    1       /* 4 INT IN, 3 ISO OUT */
 159 #define CNF_3INT3ISO    2       /* 3 INT IN, 3 ISO OUT */
 160 #define CNF_4ISO3ISO    3       /* 4 ISO IN, 3 ISO OUT */
 161 #define CNF_3ISO3ISO    4       /* 3 ISO IN, 3 ISO OUT */
 162
 163 #define EP_NUL 1        /* Endpoint at this position not allowed */
 164 #define EP_NOP 2        /* all type of endpoints allowed at this position */
 165 #define EP_ISO 3        /* Isochron endpoint mandatory at this position */
 166 #define EP_BLK 4        /* Bulk endpoint mandatory at this position */
 167 #define EP_INT 5        /* Interrupt endpoint mandatory at this position */
 168
 169 #define HFC_CHAN_B1     0
 170 #define HFC_CHAN_B2     1
 171 #define HFC_CHAN_D      2
 172 #define HFC_CHAN_E      3
 173
 174
 175 /*
 176  * List of all supported endpoint configuration sets, used to find the
 177  * best matching endpoint configuration within a device's USB descriptor.
 178  * We need at least 3 RX endpoints, and 3 TX endpoints, either
 179  * INT-in and ISO-out, or ISO-in and ISO-out)
 180  * with 4 RX endpoints even E-Channel logging is possible
 181  */
 182 static int
 183 validconf[][19] = {
 184         /* INT in, ISO out config */
 185         {EP_NUL, EP_INT, EP_NUL, EP_INT, EP_NUL, EP_INT, EP_NOP, EP_INT,
 186          EP_ISO, EP_NUL, EP_ISO, EP_NUL, EP_ISO, EP_NUL, EP_NUL, EP_NUL,
 187          CNF_4INT3ISO, 2, 1},
 188         {EP_NUL, EP_INT, EP_NUL, EP_INT, EP_NUL, EP_INT, EP_NUL, EP_NUL,
 189          EP_ISO, EP_NUL, EP_ISO, EP_NUL, EP_ISO, EP_NUL, EP_NUL, EP_NUL,
 190          CNF_3INT3ISO, 2, 0},
 191         /* ISO in, ISO out config */
 192         {EP_NOP, EP_NOP, EP_NOP, EP_NOP, EP_NOP, EP_NOP, EP_NOP, EP_NOP,
 193          EP_ISO, EP_ISO, EP_ISO, EP_ISO, EP_ISO, EP_ISO, EP_NOP, EP_ISO,
 194          CNF_4ISO3ISO, 2, 1},
 195         {EP_NUL, EP_NUL, EP_NUL, EP_NUL, EP_NUL, EP_NUL, EP_NUL, EP_NUL,
 196          EP_ISO, EP_ISO, EP_ISO, EP_ISO, EP_ISO, EP_ISO, EP_NUL, EP_NUL,
 197          CNF_3ISO3ISO, 2, 0},
 198         {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} /* EOL element */
 199 };
 200
 201 /* string description of chosen config */
 202 static char *conf_str[] = {
 203         "4 Interrupt IN + 3 Isochron OUT",
 204         "3 Interrupt IN + 3 Isochron OUT",
 205         "4 Isochron IN + 3 Isochron OUT",
 206         "3 Isochron IN + 3 Isochron OUT"
 207 };
 208
 209
 210 #define LED_OFF         0       /* no LED support */
 211 #define LED_SCHEME1     1       /* LED standard scheme */
 212 #define LED_SCHEME2     2       /* not used yet... */
 213
 214 #define LED_POWER_ON    1
 215 #define LED_POWER_OFF   2
 216 #define LED_S0_ON       3
 217 #define LED_S0_OFF      4
 218 #define LED_B1_ON       5
 219 #define LED_B1_OFF      6
 220 #define LED_B1_DATA     7
 221 #define LED_B2_ON       8
 222 #define LED_B2_OFF      9
 223 #define LED_B2_DATA     10
 224
 225 #define LED_NORMAL      0       /* LEDs are normal */
 226 #define LED_INVERTED    1       /* LEDs are inverted */
 227
 228 /* time in ms to perform a Flashing LED when B-Channel has traffic */
 229 #define LED_TIME      250
 230
 231
 232
 233 struct hfcsusb;
 234 struct usb_fifo;
 235
 236 /* structure defining input+output fifos (interrupt/bulk mode) */
 237 struct iso_urb {
 238         struct urb *urb;
 239         __u8 buffer[ISO_BUFFER_SIZE];   /* buffer rx/tx USB URB data */
 240         struct usb_fifo *owner_fifo;    /* pointer to owner fifo */
 241         __u8 indx; /* Fifos's ISO double buffer 0 or 1 ? */
 242 #ifdef ISO_FRAME_START_DEBUG
 243         int start_frames[ISO_FRAME_START_RING_COUNT];
 244         __u8 iso_frm_strt_pos; /* index in start_frame[] */
 245 #endif
 246 };
 247
 248 struct usb_fifo {
 249         int fifonum;            /* fifo index attached to this structure */
 250         int active;             /* fifo is currently active */
 251         struct hfcsusb *hw;     /* pointer to main structure */
 252         int pipe;               /* address of endpoint */
 253         __u8 usb_packet_maxlen; /* maximum length for usb transfer */
 254         unsigned int max_size;  /* maximum size of receive/send packet */
 255         __u8 intervall;         /* interrupt interval */
 256         struct urb *urb;        /* transfer structure for usb routines */
 257         __u8 buffer[128];       /* buffer USB INT OUT URB data */
 258         int bit_line;           /* how much bits are in the fifo? */
 259
 260         __u8 usb_transfer_mode; /* switched between ISO and INT */
 261         struct iso_urb  iso[2]; /* two urbs to have one always
 262                                    one pending */
 263
 264         struct dchannel *dch;   /* link to hfcsusb_t->dch */
 265         struct bchannel *bch;   /* link to hfcsusb_t->bch */
 266         struct dchannel *ech;   /* link to hfcsusb_t->ech, TODO: E-CHANNEL */
 267         int last_urblen;        /* remember length of last packet */
 268         __u8 stop_gracefull;    /* stops URB retransmission */
 269 };
 270
 271 struct hfcsusb {
 272         struct list_head        list;
 273         struct dchannel         dch;
 274         struct bchannel         bch[2];
 275         struct dchannel         ech; /* TODO : wait for struct echannel ;) */
 276
 277         struct usb_device       *dev;           /* our device */
 278         struct usb_interface    *intf;          /* used interface */
 279         int                     if_used;        /* used interface number */
 280         int                     alt_used;       /* used alternate config */
 281         int                     cfg_used;       /* configuration index used */
 282         int                     vend_idx;       /* index in hfcsusb_idtab */
 283         int                     packet_size;
 284         int                     iso_packet_size;
 285         struct usb_fifo         fifos[HFCUSB_NUM_FIFOS];
 286
 287         /* control pipe background handling */
 288         struct ctrl_buf         ctrl_buff[HFC_CTRL_BUFSIZE];
 289         int                     ctrl_in_idx, ctrl_out_idx, ctrl_cnt;
 290         struct urb              *ctrl_urb;
 291         struct usb_ctrlrequest  ctrl_write;
 292         struct usb_ctrlrequest  ctrl_read;
 293         int                     ctrl_paksize;
 294         int                     ctrl_in_pipe, ctrl_out_pipe;
 295         spinlock_t              ctrl_lock; /* lock for ctrl */
 296         spinlock_t              lock;
 297
 298         __u8                    threshold_mask;
 299         __u8                    led_state;
 300
 301         __u8                    protocol;
 302         int                     nt_timer;
 303         int                     open;
 304         __u8                    timers;
 305         __u8                    initdone;
 306         char                    name[MISDN_MAX_IDLEN];
 307 };
 308
 309 /* private vendor specific data */
 310 struct hfcsusb_vdata {
 311         __u8            led_scheme;  /* led display scheme */
 312         signed short    led_bits[8]; /* array of 8 possible LED bitmask */
 313         char            *vend_name;  /* device name */
 314 };
 315
 316
 317 #define HFC_MAX_TE_LAYER1_STATE 8
 318 #define HFC_MAX_NT_LAYER1_STATE 4
 319
 320 static const char *HFC_TE_LAYER1_STATES[HFC_MAX_TE_LAYER1_STATE + 1] = {
 321         "TE F0 - Reset",
 322         "TE F1 - Reset",
 323         "TE F2 - Sensing",
 324         "TE F3 - Deactivated",
 325         "TE F4 - Awaiting signal",
 326         "TE F5 - Identifying input",
 327         "TE F6 - Synchronized",
 328         "TE F7 - Activated",
 329         "TE F8 - Lost framing",
 330 };
 331
 332 static const char *HFC_NT_LAYER1_STATES[HFC_MAX_NT_LAYER1_STATE + 1] = {
 333         "NT G0 - Reset",
 334         "NT G1 - Deactive",
 335         "NT G2 - Pending activation",
 336         "NT G3 - Active",
 337         "NT G4 - Pending deactivation",
 338 };
 339
 340 /* supported devices */
 341 static const struct usb_device_id hfcsusb_idtab[] = {
 342         {
 343                 USB_DEVICE(0x0959, 0x2bd0),
 344                 .driver_info = (unsigned long) &((struct hfcsusb_vdata)
 345                         {LED_OFF, {4, 0, 2, 1},
 346                                         "ISDN USB TA (Cologne Chip HFC-S USB based)"}),
 347         },
 348         {
 349                 USB_DEVICE(0x0675, 0x1688),
 350                 .driver_info = (unsigned long) &((struct hfcsusb_vdata)
 351                         {LED_SCHEME1, {1, 2, 0, 0},
 352                                         "DrayTek miniVigor 128 USB ISDN TA"}),
 353         },
 354         {
 355                 USB_DEVICE(0x07b0, 0x0007),
 356                 .driver_info = (unsigned long) &((struct hfcsusb_vdata)
 357                         {LED_SCHEME1, {0x80, -64, -32, -16},
 358                                         "Billion tiny USB ISDN TA 128"}),
 359         },
 360         {
 361                 USB_DEVICE(0x0742, 0x2008),
 362                 .driver_info = (unsigned long) &((struct hfcsusb_vdata)
 363                         {LED_SCHEME1, {4, 0, 2, 1},
 364                                         "Stollmann USB TA"}),
 365         },
 366         {
 367                 USB_DEVICE(0x0742, 0x2009),
 368                 .driver_info = (unsigned long) &((struct hfcsusb_vdata)
 369                         {LED_SCHEME1, {4, 0, 2, 1},
 370                                         "Aceex USB ISDN TA"}),
 371         },
 372         {
 373                 USB_DEVICE(0x0742, 0x200A),
 374                 .driver_info = (unsigned long) &((struct hfcsusb_vdata)
 375                         {LED_SCHEME1, {4, 0, 2, 1},
 376                                         "OEM USB ISDN TA"}),
 377         },
 378         {
 379                 USB_DEVICE(0x08e3, 0x0301),
 380                 .driver_info = (unsigned long) &((struct hfcsusb_vdata)
 381                         {LED_SCHEME1, {2, 0, 1, 4},
 382                                         "Olitec USB RNIS"}),
 383         },
 384         {
 385                 USB_DEVICE(0x07fa, 0x0846),
 386                 .driver_info = (unsigned long) &((struct hfcsusb_vdata)
 387                         {LED_SCHEME1, {0x80, -64, -32, -16},
 388                                         "Bewan Modem RNIS USB"}),
 389         },
 390         {
 391                 USB_DEVICE(0x07fa, 0x0847),
 392                 .driver_info = (unsigned long) &((struct hfcsusb_vdata)
 393                         {LED_SCHEME1, {0x80, -64, -32, -16},
 394                                         "Djinn Numeris USB"}),
 395         },
 396         {
 397                 USB_DEVICE(0x07b0, 0x0006),
 398                 .driver_info = (unsigned long) &((struct hfcsusb_vdata)
 399                         {LED_SCHEME1, {0x80, -64, -32, -16},
 400                                         "Twister ISDN TA"}),
 401         },
 402         {
 403                 USB_DEVICE(0x071d, 0x1005),
 404                 .driver_info = (unsigned long) &((struct hfcsusb_vdata)
 405                         {LED_SCHEME1, {0x02, 0, 0x01, 0x04},
 406                                         "Eicon DIVA USB 4.0"}),
 407         },
 408         {
 409                 USB_DEVICE(0x0586, 0x0102),
 410                 .driver_info = (unsigned long) &((struct hfcsusb_vdata)
 411                         {LED_SCHEME1, {0x88, -64, -32, -16},
 412                                         "ZyXEL OMNI.NET USB II"}),
 413         },
 414         {
 415                 USB_DEVICE(0x1ae7, 0x0525),
 416                 .driver_info = (unsigned long) &((struct hfcsusb_vdata)
 417                         {LED_SCHEME1, {0x88, -64, -32, -16},
 418                                         "X-Tensions USB ISDN TA XC-525"}),
 419         },
 420         { }
 421 };
 422
 423 MODULE_DEVICE_TABLE(usb, hfcsusb_idtab);
 424
 425 #endif  /* __HFCSUSB_H__ */