sam-t2/sam/devices/serial/include/serial_impl.h

/*
* ========== Copyright Header Begin ==========================================
*
* OpenSPARC T2 Processor File: serial_impl.h
* Copyright (c) 2006 Sun Microsystems, Inc.  All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES.
*
* The above named program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License version 2 as published by the Free Software Foundation.
*
* The above named program is distributed in the hope that it will be
* useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this work; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
*
* ========== Copyright Header End ============================================
*/
/*
 * Copyright (C) 1991, 2001 Sun Microsystems, Inc.
 * All rights reserved.
 */
#pragma ident "@(#)1.2  01/08/27        serial_impl.h"

#ifndef _SERIAL_IMPL_H
#define _SERIAL_IMPL_H

#include <synch.h>
#include "decl_macros.h"
#include "serial_common.h"
#include "serial_registers.h"

#define SERIAL_REGS 16

typedef struct queuex {
        uint8_t c;
        struct queuex *next;
} squeue;

typedef struct channel_regs {
        uint8_t wr[SERIAL_REGS]; /* Write Registers 0-15 - Transmit buffer WR8 */
        uint8_t rr[SERIAL_REGS]; /* Only 0-3,6-8,10,12,13 and 15 are used */
                                /* Receive buffer RR8                    */
        uint8_t rcv_buf[3];      /* Additional receive buffers            */
        uint8_t tr_shft_reg[3];  /* Transmiter shift reg. Only 20 bits    */
        int qcnt;               /* # chars queued up on channel */
        squeue q;               /* head of queue - contains 1st char as well */

        mutex_t         serial_lock;
} channel_regs;

#define PORT_A          0
#define PORT_B          1
#define PORT_C          2
#define PORT_D          3
#define NUM_PORTS       2

typedef struct AB_regs {
        channel_regs port[NUM_PORTS];
} AB_Regs_t;

typedef struct serial_struct {
        FLDDECL(int,    device_no,,dump,);

        FLDDECL(struct AB_regs, scc,,dump,);    /* Serial Communications Controller */
} serial_structT;

#endif /* _SERIAL_IMPL_H */