include/linux/sdla.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * INET         An implementation of the TCP/IP protocol suite for the LINUX
   4  *              operating system.  INET is implemented using the  BSD Socket
   5  *              interface as the means of communication with the user level.
   6  *
   7  *              Global definitions for the Frame relay interface.
   8  *
   9  * Version:     @(#)if_ifrad.h  0.20    13 Apr 96
  10  *
  11  * Author:      Mike McLagan <mike.mclagan@linux.org>
  12  *
  13  * Changes:
  14  *              0.15    Mike McLagan    Structure packing
  15  *
  16  *              0.20    Mike McLagan    New flags for S508 buffer handling
  17  */
  18 #ifndef SDLA_H
  19 #define SDLA_H
  20
  21 #include <uapi/linux/sdla.h>
  22
  23
  24 /* important Z80 window addresses */
  25 #define SDLA_CONTROL_WND                0xE000
  26
  27 #define SDLA_502_CMD_BUF                0xEF60
  28 #define SDLA_502_RCV_BUF                0xA900
  29 #define SDLA_502_TXN_AVAIL              0xFFF1
  30 #define SDLA_502_RCV_AVAIL              0xFFF2
  31 #define SDLA_502_EVENT_FLAGS            0xFFF3
  32 #define SDLA_502_MDM_STATUS             0xFFF4
  33 #define SDLA_502_IRQ_INTERFACE          0xFFFD
  34 #define SDLA_502_IRQ_PERMISSION         0xFFFE
  35 #define SDLA_502_DATA_OFS               0x0010
  36
  37 #define SDLA_508_CMD_BUF                0xE000
  38 #define SDLA_508_TXBUF_INFO             0xF100
  39 #define SDLA_508_RXBUF_INFO             0xF120
  40 #define SDLA_508_EVENT_FLAGS            0xF003
  41 #define SDLA_508_MDM_STATUS             0xF004
  42 #define SDLA_508_IRQ_INTERFACE          0xF010
  43 #define SDLA_508_IRQ_PERMISSION         0xF011
  44 #define SDLA_508_TSE_OFFSET             0xF012
  45
  46 /* Event flags */
  47 #define SDLA_EVENT_STATUS               0x01
  48 #define SDLA_EVENT_DLCI_STATUS          0x02
  49 #define SDLA_EVENT_BAD_DLCI             0x04
  50 #define SDLA_EVENT_LINK_DOWN            0x40
  51
  52 /* IRQ Trigger flags */
  53 #define SDLA_INTR_RX                    0x01
  54 #define SDLA_INTR_TX                    0x02
  55 #define SDLA_INTR_MODEM                 0x04
  56 #define SDLA_INTR_COMPLETE              0x08
  57 #define SDLA_INTR_STATUS                0x10
  58 #define SDLA_INTR_TIMER                 0x20
  59
  60 /* DLCI status bits */
  61 #define SDLA_DLCI_DELETED               0x01
  62 #define SDLA_DLCI_ACTIVE                0x02
  63 #define SDLA_DLCI_WAITING               0x04
  64 #define SDLA_DLCI_NEW                   0x08
  65 #define SDLA_DLCI_INCLUDED              0x40
  66
  67 /* valid command codes */
  68 #define SDLA_INFORMATION_WRITE          0x01
  69 #define SDLA_INFORMATION_READ           0x02
  70 #define SDLA_ISSUE_IN_CHANNEL_SIGNAL    0x03
  71 #define SDLA_SET_DLCI_CONFIGURATION     0x10
  72 #define SDLA_READ_DLCI_CONFIGURATION    0x11
  73 #define SDLA_DISABLE_COMMUNICATIONS     0x12
  74 #define SDLA_ENABLE_COMMUNICATIONS      0x13
  75 #define SDLA_READ_DLC_STATUS            0x14
  76 #define SDLA_READ_DLC_STATISTICS        0x15
  77 #define SDLA_FLUSH_DLC_STATISTICS       0x16
  78 #define SDLA_LIST_ACTIVE_DLCI           0x17
  79 #define SDLA_FLUSH_INFORMATION_BUFFERS  0x18
  80 #define SDLA_ADD_DLCI                   0x20
  81 #define SDLA_DELETE_DLCI                0x21
  82 #define SDLA_ACTIVATE_DLCI              0x22
  83 #define SDLA_DEACTIVATE_DLCI            0x23
  84 #define SDLA_READ_MODEM_STATUS          0x30
  85 #define SDLA_SET_MODEM_STATUS           0x31
  86 #define SDLA_READ_COMMS_ERR_STATS       0x32
  87 #define SDLA_FLUSH_COMMS_ERR_STATS      0x33
  88 #define SDLA_READ_CODE_VERSION          0x40
  89 #define SDLA_SET_IRQ_TRIGGER            0x50
  90 #define SDLA_GET_IRQ_TRIGGER            0x51
  91
  92 /* In channel signal types */
  93 #define SDLA_ICS_LINK_VERIFY            0x02
  94 #define SDLA_ICS_STATUS_ENQ             0x03
  95
  96 /* modem status flags */
  97 #define SDLA_MODEM_DTR_HIGH             0x01
  98 #define SDLA_MODEM_RTS_HIGH             0x02
  99 #define SDLA_MODEM_DCD_HIGH             0x08
 100 #define SDLA_MODEM_CTS_HIGH             0x20
 101
 102 /* used for RET_MODEM interpretation */
 103 #define SDLA_MODEM_DCD_LOW              0x01
 104 #define SDLA_MODEM_CTS_LOW              0x02
 105
 106 /* return codes */
 107 #define SDLA_RET_OK                     0x00
 108 #define SDLA_RET_COMMUNICATIONS         0x01
 109 #define SDLA_RET_CHANNEL_INACTIVE       0x02
 110 #define SDLA_RET_DLCI_INACTIVE          0x03
 111 #define SDLA_RET_DLCI_CONFIG            0x04
 112 #define SDLA_RET_BUF_TOO_BIG            0x05
 113 #define SDLA_RET_NO_DATA                0x05
 114 #define SDLA_RET_BUF_OVERSIZE           0x06
 115 #define SDLA_RET_CIR_OVERFLOW           0x07
 116 #define SDLA_RET_NO_BUFS                0x08
 117 #define SDLA_RET_TIMEOUT                0x0A
 118 #define SDLA_RET_MODEM                  0x10
 119 #define SDLA_RET_CHANNEL_OFF            0x11
 120 #define SDLA_RET_CHANNEL_ON             0x12
 121 #define SDLA_RET_DLCI_STATUS            0x13
 122 #define SDLA_RET_DLCI_UNKNOWN           0x14
 123 #define SDLA_RET_COMMAND_INVALID        0x1F
 124
 125 /* Configuration flags */
 126 #define SDLA_DIRECT_RECV                0x0080
 127 #define SDLA_TX_NO_EXCEPT               0x0020
 128 #define SDLA_NO_ICF_MSGS                0x1000
 129 #define SDLA_TX50_RX50                  0x0000
 130 #define SDLA_TX70_RX30                  0x2000
 131 #define SDLA_TX30_RX70                  0x4000
 132
 133 /* IRQ selection flags */
 134 #define SDLA_IRQ_RECEIVE                0x01
 135 #define SDLA_IRQ_TRANSMIT               0x02
 136 #define SDLA_IRQ_MODEM_STAT             0x04
 137 #define SDLA_IRQ_COMMAND                0x08
 138 #define SDLA_IRQ_CHANNEL                0x10
 139 #define SDLA_IRQ_TIMER                  0x20
 140
 141 /* definitions for PC memory mapping */
 142 #define SDLA_8K_WINDOW                  0x01
 143 #define SDLA_S502_SEG_A                 0x10
 144 #define SDLA_S502_SEG_C                 0x20
 145 #define SDLA_S502_SEG_D                 0x00
 146 #define SDLA_S502_SEG_E                 0x30
 147 #define SDLA_S507_SEG_A                 0x00
 148 #define SDLA_S507_SEG_B                 0x40
 149 #define SDLA_S507_SEG_C                 0x80
 150 #define SDLA_S507_SEG_E                 0xC0
 151 #define SDLA_S508_SEG_A                 0x00
 152 #define SDLA_S508_SEG_C                 0x10
 153 #define SDLA_S508_SEG_D                 0x08
 154 #define SDLA_S508_SEG_E                 0x18
 155
 156 /* SDLA adapter port constants */
 157 #define SDLA_IO_EXTENTS                 0x04
 158
 159 #define SDLA_REG_CONTROL                0x00
 160 #define SDLA_REG_PC_WINDOW              0x01    /* offset for PC window select latch */
 161 #define SDLA_REG_Z80_WINDOW             0x02    /* offset for Z80 window select latch */
 162 #define SDLA_REG_Z80_CONTROL            0x03    /* offset for Z80 control latch */
 163
 164 #define SDLA_S502_STS                   0x00    /* status reg for 502, 502E, 507 */
 165 #define SDLA_S508_GNRL                  0x00    /* general purp. reg for 508 */
 166 #define SDLA_S508_STS                   0x01    /* status reg for 508 */
 167 #define SDLA_S508_IDR                   0x02    /* ID reg for 508 */
 168
 169 /* control register flags */
 170 #define SDLA_S502A_START                0x00    /* start the CPU */
 171 #define SDLA_S502A_INTREQ               0x02
 172 #define SDLA_S502A_INTEN                0x04
 173 #define SDLA_S502A_HALT                 0x08    /* halt the CPU */
 174 #define SDLA_S502A_NMI                  0x10    /* issue an NMI to the CPU */
 175
 176 #define SDLA_S502E_CPUEN                0x01
 177 #define SDLA_S502E_ENABLE               0x02
 178 #define SDLA_S502E_INTACK               0x04
 179
 180 #define SDLA_S507_ENABLE                0x01
 181 #define SDLA_S507_IRQ3                  0x00
 182 #define SDLA_S507_IRQ4                  0x20
 183 #define SDLA_S507_IRQ5                  0x40
 184 #define SDLA_S507_IRQ7                  0x60
 185 #define SDLA_S507_IRQ10                 0x80
 186 #define SDLA_S507_IRQ11                 0xA0
 187 #define SDLA_S507_IRQ12                 0xC0
 188 #define SDLA_S507_IRQ15                 0xE0
 189
 190 #define SDLA_HALT                       0x00
 191 #define SDLA_CPUEN                      0x02
 192 #define SDLA_MEMEN                      0x04
 193 #define SDLA_S507_EPROMWR               0x08
 194 #define SDLA_S507_EPROMCLK              0x10
 195 #define SDLA_S508_INTRQ                 0x08
 196 #define SDLA_S508_INTEN                 0x10
 197
 198 struct sdla_cmd {
 199    char  opp_flag;
 200    char  cmd;
 201    short length;
 202    char  retval;
 203    short dlci;
 204    char  flags;
 205    short rxlost_int;
 206    long  rxlost_app;
 207    char  reserve[2];
 208    char  data[SDLA_MAX_DATA];   /* transfer data buffer */
 209 } __attribute__((packed));
 210
 211 struct intr_info {
 212    char  flags;
 213    short txlen;
 214    char  irq;
 215    char  flags2;
 216    short timeout;
 217 } __attribute__((packed));
 218
 219 /* found in the 508's control window at RXBUF_INFO */
 220 struct buf_info {
 221    unsigned short rse_num;
 222    unsigned long  rse_base;
 223    unsigned long  rse_next;
 224    unsigned long  buf_base;
 225    unsigned short reserved;
 226    unsigned long  buf_top;
 227 } __attribute__((packed));
 228
 229 /* structure pointed to by rse_base in RXBUF_INFO struct */
 230 struct buf_entry {
 231    char  opp_flag;
 232    short length;
 233    short dlci;
 234    char  flags;
 235    short timestamp;
 236    short reserved[2];
 237    long  buf_addr;
 238 } __attribute__((packed));
 239
 240 #endif