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/*

 * INET         An implementation of the TCP/IP protocol suite for the LINUX

 *              operating system.  INET is implemented using the  BSD Socket

 *              interface as the means of communication with the user level.

 *

 *              Global definitions for the Frame relay interface.

 *

 * Version:     @(#)if_ifrad.h  0.20    13 Apr 96

 *

 * Author:      Mike McLagan <mike.mclagan@linux.org>

 *

 * Changes:

 *              0.15    Mike McLagan    Structure packing

 *

 *              0.20    Mike McLagan    New flags for S508 buffer handling

 *

 *              This program is free software; you can redistribute it and/or

 *              modify it under the terms of the GNU General Public License

 *              as published by the Free Software Foundation; either version

 *              2 of the License, or (at your option) any later version.

 */

#ifndef SDLA_H

#define SDLA_H

/* adapter type */

#define SDLA_TYPES

#define SDLA_S502A                      5020

#define SDLA_S502E                      5021

#define SDLA_S503                       5030

#define SDLA_S507                       5070

#define SDLA_S508                       5080

#define SDLA_S509                       5090

#define SDLA_UNKNOWN                    -1

/* port selection flags for the S508 */

#define SDLA_S508_PORT_V35              0x00

#define SDLA_S508_PORT_RS232            0x02

/* Z80 CPU speeds */

#define SDLA_CPU_3M                     0x00

#define SDLA_CPU_5M                     0x01

#define SDLA_CPU_7M                     0x02

#define SDLA_CPU_8M                     0x03

#define SDLA_CPU_10M                    0x04

#define SDLA_CPU_16M                    0x05

#define SDLA_CPU_12M                    0x06

/* some private IOCTLs */

#define SDLA_IDENTIFY                   (FRAD_LAST_IOCTL + 1)

#define SDLA_CPUSPEED                   (FRAD_LAST_IOCTL + 2)

#define SDLA_PROTOCOL                   (FRAD_LAST_IOCTL + 3)

#define SDLA_CLEARMEM                   (FRAD_LAST_IOCTL + 4)

#define SDLA_WRITEMEM                   (FRAD_LAST_IOCTL + 5)

#define SDLA_READMEM                    (FRAD_LAST_IOCTL + 6)

struct sdla_mem {

   int  addr;

   int  len;

   void *data;

};

#define SDLA_START                      (FRAD_LAST_IOCTL + 7)

#define SDLA_STOP                       (FRAD_LAST_IOCTL + 8)

/* some offsets in the Z80's memory space */

#define SDLA_NMIADDR                    0x0000

#define SDLA_CONF_ADDR                  0x0010

#define SDLA_S502A_NMIADDR              0x0066

#define SDLA_CODE_BASEADDR              0x0100

#define SDLA_WINDOW_SIZE                0x2000

#define SDLA_ADDR_MASK                  0x1FFF

/* largest handleable block of data */

#define SDLA_MAX_DATA                   4080

#define SDLA_MAX_MTU                    4072    /* MAX_DATA - sizeof(fradhdr) */

#define SDLA_MAX_DLCI                   24

/* this should be the same as frad_conf */

struct sdla_conf {

   short station;

   short config;

   short kbaud;

   short clocking;

   short max_frm;

   short T391;

   short T392;

   short N391;

   short N392;

   short N393;

   short CIR_fwd;

   short Bc_fwd;

   short Be_fwd;

   short CIR_bwd;

   short Bc_bwd;

   short Be_bwd;

};

/* this should be the same as dlci_conf */

struct sdla_dlci_conf {

   short config;

   short CIR_fwd;

   short Bc_fwd;

   short Be_fwd;

   short CIR_bwd;

   short Bc_bwd;

   short Be_bwd;

   short Tc_fwd;

   short Tc_bwd;

   short Tf_max;

   short Tb_max;

};

#ifndef __KERNEL__

void sdla(void *cfg_info, char *dev, struct frad_conf *conf, int quiet);

#else

/* important Z80 window addresses */

#define SDLA_CONTROL_WND                0xE000

#define SDLA_502_CMD_BUF                0xEF60

#define SDLA_502_RCV_BUF                0xA900

#define SDLA_502_TXN_AVAIL              0xFFF1

#define SDLA_502_RCV_AVAIL              0xFFF2

#define SDLA_502_EVENT_FLAGS            0xFFF3

#define SDLA_502_MDM_STATUS             0xFFF4

#define SDLA_502_IRQ_INTERFACE          0xFFFD

#define SDLA_502_IRQ_PERMISSION         0xFFFE

#define SDLA_502_DATA_OFS               0x0010

#define SDLA_508_CMD_BUF                0xE000

#define SDLA_508_TXBUF_INFO             0xF100

#define SDLA_508_RXBUF_INFO             0xF120

#define SDLA_508_EVENT_FLAGS            0xF003

#define SDLA_508_MDM_STATUS             0xF004

#define SDLA_508_IRQ_INTERFACE          0xF010

#define SDLA_508_IRQ_PERMISSION         0xF011

#define SDLA_508_TSE_OFFSET             0xF012

/* Event flags */

#define SDLA_EVENT_STATUS               0x01

#define SDLA_EVENT_DLCI_STATUS          0x02

#define SDLA_EVENT_BAD_DLCI             0x04

#define SDLA_EVENT_LINK_DOWN            0x40

/* IRQ Trigger flags */

#define SDLA_INTR_RX                    0x01

#define SDLA_INTR_TX                    0x02

#define SDLA_INTR_MODEM                 0x04

#define SDLA_INTR_COMPLETE              0x08

#define SDLA_INTR_STATUS                0x10

#define SDLA_INTR_TIMER                 0x20

/* DLCI status bits */

#define SDLA_DLCI_DELETED               0x01

#define SDLA_DLCI_ACTIVE                0x02

#define SDLA_DLCI_WAITING               0x04

#define SDLA_DLCI_NEW                   0x08

#define SDLA_DLCI_INCLUDED              0x40

/* valid command codes */

#define SDLA_INFORMATION_WRITE          0x01

#define SDLA_INFORMATION_READ           0x02

#define SDLA_ISSUE_IN_CHANNEL_SIGNAL    0x03

#define SDLA_SET_DLCI_CONFIGURATION     0x10

#define SDLA_READ_DLCI_CONFIGURATION    0x11

#define SDLA_DISABLE_COMMUNICATIONS     0x12

#define SDLA_ENABLE_COMMUNICATIONS      0x13

#define SDLA_READ_DLC_STATUS            0x14

#define SDLA_READ_DLC_STATISTICS        0x15

#define SDLA_FLUSH_DLC_STATISTICS       0x16

#define SDLA_LIST_ACTIVE_DLCI           0x17

#define SDLA_FLUSH_INFORMATION_BUFFERS  0x18

#define SDLA_ADD_DLCI                   0x20

#define SDLA_DELETE_DLCI                0x21

#define SDLA_ACTIVATE_DLCI              0x22

#define SDLA_DEACTIVATE_DLCI            0x23

#define SDLA_READ_MODEM_STATUS          0x30

#define SDLA_SET_MODEM_STATUS           0x31

#define SDLA_READ_COMMS_ERR_STATS       0x32

#define SDLA_FLUSH_COMMS_ERR_STATS      0x33

#define SDLA_READ_CODE_VERSION          0x40

#define SDLA_SET_IRQ_TRIGGER            0x50

#define SDLA_GET_IRQ_TRIGGER            0x51

/* In channel signal types */

#define SDLA_ICS_LINK_VERIFY            0x02

#define SDLA_ICS_STATUS_ENQ             0x03

/* modem status flags */

#define SDLA_MODEM_DTR_HIGH             0x01

#define SDLA_MODEM_RTS_HIGH             0x02

#define SDLA_MODEM_DCD_HIGH             0x08

#define SDLA_MODEM_CTS_HIGH             0x20

/* used for RET_MODEM interpretation */

#define SDLA_MODEM_DCD_LOW              0x01

#define SDLA_MODEM_CTS_LOW              0x02

/* return codes */

#define SDLA_RET_OK                     0x00

#define SDLA_RET_COMMUNICATIONS         0x01

#define SDLA_RET_CHANNEL_INACTIVE       0x02

#define SDLA_RET_DLCI_INACTIVE          0x03

#define SDLA_RET_DLCI_CONFIG            0x04

#define SDLA_RET_BUF_TOO_BIG            0x05

#define SDLA_RET_NO_DATA                0x05

#define SDLA_RET_BUF_OVERSIZE           0x06

#define SDLA_RET_CIR_OVERFLOW           0x07

#define SDLA_RET_NO_BUFS                0x08

#define SDLA_RET_TIMEOUT                0x0A

#define SDLA_RET_MODEM                  0x10

#define SDLA_RET_CHANNEL_OFF            0x11

#define SDLA_RET_CHANNEL_ON             0x12

#define SDLA_RET_DLCI_STATUS            0x13

#define SDLA_RET_DLCI_UNKNOWN           0x14

#define SDLA_RET_COMMAND_INVALID        0x1F

/* Configuration flags */

#define SDLA_DIRECT_RECV                0x0080

#define SDLA_TX_NO_EXCEPT               0x0020

#define SDLA_NO_ICF_MSGS                0x1000

#define SDLA_TX50_RX50                  0x0000

#define SDLA_TX70_RX30                  0x2000

#define SDLA_TX30_RX70                  0x4000

/* IRQ selection flags */

#define SDLA_IRQ_RECEIVE                0x01

#define SDLA_IRQ_TRANSMIT               0x02

#define SDLA_IRQ_MODEM_STAT             0x04

#define SDLA_IRQ_COMMAND                0x08

#define SDLA_IRQ_CHANNEL                0x10

#define SDLA_IRQ_TIMER                  0x20

/* definitions for PC memory mapping */

#define SDLA_8K_WINDOW                  0x01

#define SDLA_S502_SEG_A                 0x10

#define SDLA_S502_SEG_C                 0x20

#define SDLA_S502_SEG_D                 0x00

#define SDLA_S502_SEG_E                 0x30

#define SDLA_S507_SEG_A                 0x00

#define SDLA_S507_SEG_B                 0x40

#define SDLA_S507_SEG_C                 0x80

#define SDLA_S507_SEG_E                 0xC0

#define SDLA_S508_SEG_A                 0x00

#define SDLA_S508_SEG_C                 0x10

#define SDLA_S508_SEG_D                 0x08

#define SDLA_S508_SEG_E                 0x18

/* SDLA adapter port constants */

#define SDLA_IO_EXTENTS                 0x04

#define SDLA_REG_CONTROL                0x00

#define SDLA_REG_PC_WINDOW              0x01    /* offset for PC window select latch */

#define SDLA_REG_Z80_WINDOW             0x02    /* offset for Z80 window select latch */

#define SDLA_REG_Z80_CONTROL            0x03    /* offset for Z80 control latch */

#define SDLA_S502_STS                   0x00    /* status reg for 502, 502E, 507 */

#define SDLA_S508_GNRL                  0x00    /* general purp. reg for 508 */

#define SDLA_S508_STS                   0x01    /* status reg for 508 */

#define SDLA_S508_IDR                   0x02    /* ID reg for 508 */

/* control register flags */

#define SDLA_S502A_START                0x00    /* start the CPU */

#define SDLA_S502A_INTREQ               0x02

#define SDLA_S502A_INTEN                0x04

#define SDLA_S502A_HALT                 0x08    /* halt the CPU */      

#define SDLA_S502A_NMI                  0x10    /* issue an NMI to the CPU */

#define SDLA_S502E_CPUEN                0x01

#define SDLA_S502E_ENABLE               0x02

#define SDLA_S502E_INTACK               0x04

#define SDLA_S507_ENABLE                0x01

#define SDLA_S507_IRQ3                  0x00

#define SDLA_S507_IRQ4                  0x20

#define SDLA_S507_IRQ5                  0x40

#define SDLA_S507_IRQ7                  0x60

#define SDLA_S507_IRQ10                 0x80

#define SDLA_S507_IRQ11                 0xA0

#define SDLA_S507_IRQ12                 0xC0

#define SDLA_S507_IRQ15                 0xE0

#define SDLA_HALT                       0x00

#define SDLA_CPUEN                      0x02

#define SDLA_MEMEN                      0x04

#define SDLA_S507_EPROMWR               0x08

#define SDLA_S507_EPROMCLK              0x10

#define SDLA_S508_INTRQ                 0x08

#define SDLA_S508_INTEN                 0x10

struct sdla_cmd {

   char  opp_flag               __attribute__((packed));

   char  cmd                    __attribute__((packed));

   short length                 __attribute__((packed));

   char  retval                 __attribute__((packed));

   short dlci                   __attribute__((packed));

   char  flags                  __attribute__((packed));

   short rxlost_int             __attribute__((packed));

   long  rxlost_app             __attribute__((packed));

   char  reserve[2]             __attribute__((packed));

   char  data[SDLA_MAX_DATA]    __attribute__((packed));        /* transfer data buffer */

};

struct intr_info {

   char  flags          __attribute__((packed));

   short txlen          __attribute__((packed));

   char  irq            __attribute__((packed));

   char  flags2         __attribute__((packed));

   short timeout        __attribute__((packed));

};

/* found in the 508's control window at RXBUF_INFO */

struct buf_info {

   unsigned short rse_num       __attribute__((packed));

   unsigned long  rse_base      __attribute__((packed));

   unsigned long  rse_next      __attribute__((packed));

   unsigned long  buf_base      __attribute__((packed));

   unsigned short reserved      __attribute__((packed));

   unsigned long  buf_top       __attribute__((packed));

};

/* structure pointed to by rse_base in RXBUF_INFO struct */

struct buf_entry {

   char  opp_flag       __attribute__((packed));

   short length         __attribute__((packed));

   short dlci           __attribute__((packed));

   char  flags          __attribute__((packed));

   short timestamp      __attribute__((packed));

   short reserved[2]    __attribute__((packed));

   long  buf_addr       __attribute__((packed));

};

#endif

#endif