linux-imx

/* SPDX-License-Identifier: GPL-2.0 */

/*

 * Copyright IBM Corp. 2007

 * Authors: Peter Tiedemann (ptiedem@de.ibm.com)

 *

 *  MPC additions:

 *      Belinda Thompson (belindat@us.ibm.com)

 *      Andy Richter (richtera@us.ibm.com)

 */

​

#ifndef _CTC_MPC_H_

#define _CTC_MPC_H_

​

#include <linux/interrupt.h>

#include <linux/skbuff.h>

#include "fsm.h"

​

/*

 * MPC external interface

 * Note that ctc_mpc_xyz are called with a lock on ................

 */

​

/*  port_number is the mpc device 0, 1, 2 etc mpc2 is port_number 2 */

​

/*  passive open  Just wait for XID2 exchange */

extern int ctc_mpc_alloc_channel(int port,

        void (*callback)(int port_num, int max_write_size));

/* active open  Alloc then send XID2 */

extern void ctc_mpc_establish_connectivity(int port,

        void (*callback)(int port_num, int rc, int max_write_size));

​

extern void ctc_mpc_dealloc_ch(int port);

extern void ctc_mpc_flow_control(int port, int flowc);

​

/*

 * other MPC Group prototypes and structures

 */

​

#define ETH_P_SNA_DIX   0x80D5

​

/*

 * Declaration of an XID2

 *

 */

#define ALLZEROS 0x0000000000000000

​

#define XID_FM2     0x20

#define XID2_0      0x00

#define XID2_7      0x07

#define XID2_WRITE_SIDE 0x04

#define XID2_READ_SIDE  0x05

​

struct xid2 {

    __u8    xid2_type_id;

    __u8    xid2_len;

    __u32   xid2_adj_id;

    __u8    xid2_rlen;

    __u8    xid2_resv1;

    __u8    xid2_flag1;

    __u8    xid2_fmtt;

    __u8    xid2_flag4;

    __u16   xid2_resv2;

    __u8    xid2_tgnum;

    __u32   xid2_sender_id;

    __u8    xid2_flag2;

    __u8    xid2_option;

    char  xid2_resv3[8];

    __u16   xid2_resv4;

    __u8    xid2_dlc_type;

    __u16   xid2_resv5;

    __u8    xid2_mpc_flag;

    __u8    xid2_resv6;

    __u16   xid2_buf_len;

    char xid2_buffer[255 - (13 * sizeof(__u8) +

                2 * sizeof(__u32) +

                4 * sizeof(__u16) +

                8 * sizeof(char))];

} __attribute__ ((packed));

​

#define XID2_LENGTH  (sizeof(struct xid2))

​

struct th_header {

    __u8    th_seg;

    __u8    th_ch_flag;

#define TH_HAS_PDU  0xf0

#define TH_IS_XID   0x01

#define TH_SWEEP_REQ    0xfe

#define TH_SWEEP_RESP   0xff

    __u8    th_blk_flag;

#define TH_DATA_IS_XID  0x80

#define TH_RETRY    0x40

#define TH_DISCONTACT   0xc0