task_test7.c

TI OMAP 1510上mcbsp的驱动程序

/*
 * dspapps/dsp/task_testB/task_test7.c
 *
 * DSP task example: private IPBUF
 *
 * Copyright (C) 2002,2003 Nokia Corporation
 *
 * Written by Toshihiro Kobayashi <[e-mail]>
 *
 * 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.
 *
 * This 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 program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 * $Id: task_test7.c
 * $Revision: 2.0
 * $Date: 2003/11/11
 *
 */
#include <std.h>
#include "mailbox.h"
#include "tokliBIOS.h"

#define T7_BUF_SZ	0x10

static Uns	t7_rcv_bksnd(struct dsptask *task, Uns cnt);
static Uns	t7_rcv_tctl(struct dsptask *task, Uns ctlcmd);

//#pragma DATA_SECTION(t7_rbuf_data, "ipbuf");
//#pragma DATA_SECTION(t7_wbuf_data, "ipbuf");
Int	t7_rbuf_data[T7_BUF_SZ];
Int	t7_wbuf_data[T7_BUF_SZ];

struct dsptask task_test7 = {
	TID_MAGIC,	// tid
	"test7",	// name
	MBCMD_TTYP_PVDM | MBCMD_TTYP_PVMD |
	MBCMD_TTYP_BKDM | MBCMD_TTYP_BKMD |
	MBCMD_TTYP_ASND | MBCMD_TTYP_AREQ,
			// ttyp: active block snd, active block rcv
	t7_rcv_bksnd,	// rcv_snd
	NULL,		// rcv_req
	t7_rcv_tctl,	// rcv_tctl
	NULL		// tsk_attrs
};

static Uns t7_rcv_bksnd(struct dsptask *task, Uns cnt)
{
	if(cnt > T7_BUF_SZ)
		return MBCMD_EID_BADCNT;

	memcpy(t7_wbuf_data, t7_rbuf_data, cnt);
	bksndp(task, t7_wbuf_data, cnt); // echo back
	bkreqp(task, t7_rbuf_data, T7_BUF_SZ);

	return 0;
}

static Uns t7_rcv_tctl(struct dsptask *task, Uns ctlcmd)
{
	switch(ctlcmd) {
		case MBCMD_TCTL_TINIT:
			memset(t7_rbuf_data, 0xbeef, T7_BUF_SZ);
			memset(t7_wbuf_data, 0xdead, T7_BUF_SZ);
			bkreqp(task, t7_rbuf_data, T7_BUF_SZ);
			return 0;
		default:
			return MBCMD_EID_BADTCTL;
	}
}