drivers/tty/serial/sunsab.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /* sunsab.h: Register Definitions for the Siemens SAB82532 DUSCC
   3  *
   4  * Copyright (C) 1997  Eddie C. Dost  (ecd@skynet.be)
   5  */
   6
   7 #ifndef _SUNSAB_H
   8 #define _SUNSAB_H
   9
  10 struct sab82532_async_rd_regs {
  11         u8      rfifo[0x20];    /* Receive FIFO                         */
  12         u8      star;           /* Status Register                      */
  13         u8      __pad1;
  14         u8      mode;           /* Mode Register                        */
  15         u8      timr;           /* Timer Register                       */
  16         u8      xon;            /* XON Character                        */
  17         u8      xoff;           /* XOFF Character                       */
  18         u8      tcr;            /* Termination Character Register       */
  19         u8      dafo;           /* Data Format                          */
  20         u8      rfc;            /* RFIFO Control Register               */
  21         u8      __pad2;
  22         u8      rbcl;           /* Receive Byte Count Low               */
  23         u8      rbch;           /* Receive Byte Count High              */
  24         u8      ccr0;           /* Channel Configuration Register 0     */
  25         u8      ccr1;           /* Channel Configuration Register 1     */
  26         u8      ccr2;           /* Channel Configuration Register 2     */
  27         u8      ccr3;           /* Channel Configuration Register 3     */
  28         u8      __pad3[4];
  29         u8      vstr;           /* Version Status Register              */
  30         u8      __pad4[3];
  31         u8      gis;            /* Global Interrupt Status              */
  32         u8      ipc;            /* Interrupt Port Configuration         */
  33         u8      isr0;           /* Interrupt Status 0                   */
  34         u8      isr1;           /* Interrupt Status 1                   */
  35         u8      pvr;            /* Port Value Register                  */
  36         u8      pis;            /* Port Interrupt Status                */
  37         u8      pcr;            /* Port Configuration Register          */
  38         u8      ccr4;           /* Channel Configuration Register 4     */
  39 };
  40
  41 struct sab82532_async_wr_regs {
  42         u8      xfifo[0x20];    /* Transmit FIFO                        */
  43         u8      cmdr;           /* Command Register                     */
  44         u8      __pad1;
  45         u8      mode;
  46         u8      timr;
  47         u8      xon;
  48         u8      xoff;
  49         u8      tcr;
  50         u8      dafo;
  51         u8      rfc;
  52         u8      __pad2;
  53         u8      xbcl;           /* Transmit Byte Count Low              */
  54         u8      xbch;           /* Transmit Byte Count High             */
  55         u8      ccr0;
  56         u8      ccr1;
  57         u8      ccr2;
  58         u8      ccr3;
  59         u8      tsax;           /* Time-Slot Assignment Reg. Transmit   */
  60         u8      tsar;           /* Time-Slot Assignment Reg. Receive    */
  61         u8      xccr;           /* Transmit Channel Capacity Register   */
  62         u8      rccr;           /* Receive Channel Capacity Register    */
  63         u8      bgr;            /* Baud Rate Generator Register         */
  64         u8      tic;            /* Transmit Immediate Character         */
  65         u8      mxn;            /* Mask XON Character                   */
  66         u8      mxf;            /* Mask XOFF Character                  */
  67         u8      iva;            /* Interrupt Vector Address             */
  68         u8      ipc;
  69         u8      imr0;           /* Interrupt Mask Register 0            */
  70         u8      imr1;           /* Interrupt Mask Register 1            */
  71         u8      pvr;
  72         u8      pim;            /* Port Interrupt Mask                  */
  73         u8      pcr;
  74         u8      ccr4;
  75 };
  76
  77 struct sab82532_async_rw_regs { /* Read/Write registers                 */
  78         u8      __pad1[0x20];
  79         u8      __pad2;
  80         u8      __pad3;
  81         u8      mode;
  82         u8      timr;
  83         u8      xon;
  84         u8      xoff;
  85         u8      tcr;
  86         u8      dafo;
  87         u8      rfc;
  88         u8      __pad4;
  89         u8      __pad5;
  90         u8      __pad6;
  91         u8      ccr0;
  92         u8      ccr1;
  93         u8      ccr2;
  94         u8      ccr3;
  95         u8      __pad7;
  96         u8      __pad8;
  97         u8      __pad9;
  98         u8      __pad10;
  99         u8      __pad11;
 100         u8      __pad12;
 101         u8      __pad13;
 102         u8      __pad14;
 103         u8      __pad15;
 104         u8      ipc;
 105         u8      __pad16;
 106         u8      __pad17;
 107         u8      pvr;
 108         u8      __pad18;
 109         u8      pcr;
 110         u8      ccr4;
 111 };
 112
 113 union sab82532_async_regs {
 114         __volatile__ struct sab82532_async_rd_regs      r;
 115         __volatile__ struct sab82532_async_wr_regs      w;
 116         __volatile__ struct sab82532_async_rw_regs      rw;
 117 };
 118
 119 union sab82532_irq_status {
 120         unsigned short                   stat;
 121         struct {
 122                 unsigned char            isr0;
 123                 unsigned char            isr1;
 124         } sreg;
 125 };
 126
 127 /* irqflags bits */
 128 #define SAB82532_ALLS                   0x00000001
 129 #define SAB82532_XPR                    0x00000002
 130 #define SAB82532_REGS_PENDING           0x00000004
 131
 132 /* RFIFO Status Byte */
 133 #define SAB82532_RSTAT_PE               0x80
 134 #define SAB82532_RSTAT_FE               0x40
 135 #define SAB82532_RSTAT_PARITY           0x01
 136
 137 /* Status Register (STAR) */
 138 #define SAB82532_STAR_XDOV              0x80
 139 #define SAB82532_STAR_XFW               0x40
 140 #define SAB82532_STAR_RFNE              0x20
 141 #define SAB82532_STAR_FCS               0x10
 142 #define SAB82532_STAR_TEC               0x08
 143 #define SAB82532_STAR_CEC               0x04
 144 #define SAB82532_STAR_CTS               0x02
 145
 146 /* Command Register (CMDR) */
 147 #define SAB82532_CMDR_RMC               0x80
 148 #define SAB82532_CMDR_RRES              0x40
 149 #define SAB82532_CMDR_RFRD              0x20
 150 #define SAB82532_CMDR_STI               0x10
 151 #define SAB82532_CMDR_XF                0x08
 152 #define SAB82532_CMDR_XRES              0x01
 153
 154 /* Mode Register (MODE) */
 155 #define SAB82532_MODE_FRTS              0x40
 156 #define SAB82532_MODE_FCTS              0x20
 157 #define SAB82532_MODE_FLON              0x10
 158 #define SAB82532_MODE_RAC               0x08
 159 #define SAB82532_MODE_RTS               0x04
 160 #define SAB82532_MODE_TRS               0x02
 161 #define SAB82532_MODE_TLP               0x01
 162
 163 /* Timer Register (TIMR) */
 164 #define SAB82532_TIMR_CNT_MASK          0xe0
 165 #define SAB82532_TIMR_VALUE_MASK        0x1f
 166
 167 /* Data Format (DAFO) */
 168 #define SAB82532_DAFO_XBRK              0x40
 169 #define SAB82532_DAFO_STOP              0x20
 170 #define SAB82532_DAFO_PAR_SPACE         0x00
 171 #define SAB82532_DAFO_PAR_ODD           0x08
 172 #define SAB82532_DAFO_PAR_EVEN          0x10
 173 #define SAB82532_DAFO_PAR_MARK          0x18
 174 #define SAB82532_DAFO_PARE              0x04
 175 #define SAB82532_DAFO_CHL8              0x00
 176 #define SAB82532_DAFO_CHL7              0x01
 177 #define SAB82532_DAFO_CHL6              0x02
 178 #define SAB82532_DAFO_CHL5              0x03
 179
 180 /* RFIFO Control Register (RFC) */
 181 #define SAB82532_RFC_DPS                0x40
 182 #define SAB82532_RFC_DXS                0x20
 183 #define SAB82532_RFC_RFDF               0x10
 184 #define SAB82532_RFC_RFTH_1             0x00
 185 #define SAB82532_RFC_RFTH_4             0x04
 186 #define SAB82532_RFC_RFTH_16            0x08
 187 #define SAB82532_RFC_RFTH_32            0x0c
 188 #define SAB82532_RFC_TCDE               0x01
 189
 190 /* Received Byte Count High (RBCH) */
 191 #define SAB82532_RBCH_DMA               0x80
 192 #define SAB82532_RBCH_CAS               0x20
 193
 194 /* Transmit Byte Count High (XBCH) */
 195 #define SAB82532_XBCH_DMA               0x80
 196 #define SAB82532_XBCH_CAS               0x20
 197 #define SAB82532_XBCH_XC                0x10
 198
 199 /* Channel Configuration Register 0 (CCR0) */
 200 #define SAB82532_CCR0_PU                0x80
 201 #define SAB82532_CCR0_MCE               0x40
 202 #define SAB82532_CCR0_SC_NRZ            0x00
 203 #define SAB82532_CCR0_SC_NRZI           0x08
 204 #define SAB82532_CCR0_SC_FM0            0x10
 205 #define SAB82532_CCR0_SC_FM1            0x14
 206 #define SAB82532_CCR0_SC_MANCH          0x18
 207 #define SAB82532_CCR0_SM_HDLC           0x00
 208 #define SAB82532_CCR0_SM_SDLC_LOOP      0x01
 209 #define SAB82532_CCR0_SM_BISYNC         0x02
 210 #define SAB82532_CCR0_SM_ASYNC          0x03
 211
 212 /* Channel Configuration Register 1 (CCR1) */
 213 #define SAB82532_CCR1_ODS               0x10
 214 #define SAB82532_CCR1_BCR               0x08
 215 #define SAB82532_CCR1_CM_MASK           0x07
 216
 217 /* Channel Configuration Register 2 (CCR2) */
 218 #define SAB82532_CCR2_SOC1              0x80
 219 #define SAB82532_CCR2_SOC0              0x40
 220 #define SAB82532_CCR2_BR9               0x80
 221 #define SAB82532_CCR2_BR8               0x40
 222 #define SAB82532_CCR2_BDF               0x20
 223 #define SAB82532_CCR2_SSEL              0x10
 224 #define SAB82532_CCR2_XCS0              0x20
 225 #define SAB82532_CCR2_RCS0              0x10
 226 #define SAB82532_CCR2_TOE               0x08
 227 #define SAB82532_CCR2_RWX               0x04
 228 #define SAB82532_CCR2_DIV               0x01
 229
 230 /* Channel Configuration Register 3 (CCR3) */
 231 #define SAB82532_CCR3_PSD               0x01
 232
 233 /* Time Slot Assignment Register Transmit (TSAX) */
 234 #define SAB82532_TSAX_TSNX_MASK         0xfc
 235 #define SAB82532_TSAX_XCS2              0x02    /* see also CCR2 */
 236 #define SAB82532_TSAX_XCS1              0x01
 237
 238 /* Time Slot Assignment Register Receive (TSAR) */
 239 #define SAB82532_TSAR_TSNR_MASK         0xfc
 240 #define SAB82532_TSAR_RCS2              0x02    /* see also CCR2 */
 241 #define SAB82532_TSAR_RCS1              0x01
 242
 243 /* Version Status Register (VSTR) */
 244 #define SAB82532_VSTR_CD                0x80
 245 #define SAB82532_VSTR_DPLA              0x40
 246 #define SAB82532_VSTR_VN_MASK           0x0f
 247 #define SAB82532_VSTR_VN_1              0x00
 248 #define SAB82532_VSTR_VN_2              0x01
 249 #define SAB82532_VSTR_VN_3_2            0x02
 250
 251 /* Global Interrupt Status Register (GIS) */
 252 #define SAB82532_GIS_PI                 0x80
 253 #define SAB82532_GIS_ISA1               0x08
 254 #define SAB82532_GIS_ISA0               0x04
 255 #define SAB82532_GIS_ISB1               0x02
 256 #define SAB82532_GIS_ISB0               0x01
 257
 258 /* Interrupt Vector Address (IVA) */
 259 #define SAB82532_IVA_MASK               0xf1
 260
 261 /* Interrupt Port Configuration (IPC) */
 262 #define SAB82532_IPC_VIS                0x80
 263 #define SAB82532_IPC_SLA1               0x10
 264 #define SAB82532_IPC_SLA0               0x08
 265 #define SAB82532_IPC_CASM               0x04
 266 #define SAB82532_IPC_IC_OPEN_DRAIN      0x00
 267 #define SAB82532_IPC_IC_ACT_LOW         0x01
 268 #define SAB82532_IPC_IC_ACT_HIGH        0x03
 269
 270 /* Interrupt Status Register 0 (ISR0) */
 271 #define SAB82532_ISR0_TCD               0x80
 272 #define SAB82532_ISR0_TIME              0x40
 273 #define SAB82532_ISR0_PERR              0x20
 274 #define SAB82532_ISR0_FERR              0x10
 275 #define SAB82532_ISR0_PLLA              0x08
 276 #define SAB82532_ISR0_CDSC              0x04
 277 #define SAB82532_ISR0_RFO               0x02
 278 #define SAB82532_ISR0_RPF               0x01
 279
 280 /* Interrupt Status Register 1 (ISR1) */
 281 #define SAB82532_ISR1_BRK               0x80
 282 #define SAB82532_ISR1_BRKT              0x40
 283 #define SAB82532_ISR1_ALLS              0x20
 284 #define SAB82532_ISR1_XOFF              0x10
 285 #define SAB82532_ISR1_TIN               0x08
 286 #define SAB82532_ISR1_CSC               0x04
 287 #define SAB82532_ISR1_XON               0x02
 288 #define SAB82532_ISR1_XPR               0x01
 289
 290 /* Interrupt Mask Register 0 (IMR0) */
 291 #define SAB82532_IMR0_TCD               0x80
 292 #define SAB82532_IMR0_TIME              0x40
 293 #define SAB82532_IMR0_PERR              0x20
 294 #define SAB82532_IMR0_FERR              0x10
 295 #define SAB82532_IMR0_PLLA              0x08
 296 #define SAB82532_IMR0_CDSC              0x04
 297 #define SAB82532_IMR0_RFO               0x02
 298 #define SAB82532_IMR0_RPF               0x01
 299
 300 /* Interrupt Mask Register 1 (IMR1) */
 301 #define SAB82532_IMR1_BRK               0x80
 302 #define SAB82532_IMR1_BRKT              0x40
 303 #define SAB82532_IMR1_ALLS              0x20
 304 #define SAB82532_IMR1_XOFF              0x10
 305 #define SAB82532_IMR1_TIN               0x08
 306 #define SAB82532_IMR1_CSC               0x04
 307 #define SAB82532_IMR1_XON               0x02
 308 #define SAB82532_IMR1_XPR               0x01
 309
 310 /* Port Interrupt Status Register (PIS) */
 311 #define SAB82532_PIS_SYNC_B             0x08
 312 #define SAB82532_PIS_DTR_B              0x04
 313 #define SAB82532_PIS_DTR_A              0x02
 314 #define SAB82532_PIS_SYNC_A             0x01
 315
 316 /* Channel Configuration Register 4 (CCR4) */
 317 #define SAB82532_CCR4_MCK4              0x80
 318 #define SAB82532_CCR4_EBRG              0x40
 319 #define SAB82532_CCR4_TST1              0x20
 320 #define SAB82532_CCR4_ICD               0x10
 321
 322
 323 #endif /* !(_SUNSAB_H) */