/* plugreport.c v0.2

 * A program to read all MPR/PCR registers from all devices and report them.

 * Copyright 2002-2004 Dan Dennedy

 *

 *  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 Library 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.

 */

/* standard system includes */

#include <unistd.h>

#include <string.h>

#include <stdio.h>

#include <stdlib.h>

#include <netinet/in.h>

/* linux1394 includes */

#include <libraw1394/raw1394.h>

#include <libraw1394/csr.h>

#include "../src/iec61883.h"

/************ DECLARE PRIVATE INTERFACE BITS OF LIBIEC61883!! **************/

/* standard CSR offsets for plugs */

#define CSR_O_MPR   0x900

#define CSR_O_PCR_0 0x904

#define CSR_O_PCR_1 0x908

#define CSR_O_PCR_2 0x90C

#define CSR_O_PCR_3 0x910

#define CSR_I_MPR   0x980

#define CSR_I_PCR_0 0x984

#define CSR_I_PCR_1 0x988

#define CSR_I_PCR_2 0x98C

#define CSR_I_PCR_3 0x990

#if ( __BYTE_ORDER == __BIG_ENDIAN )

struct iec61883_oMPR {

	unsigned int data_rate:2;

	unsigned int bcast_channel:6;

	unsigned int non_persist_ext:8;

	unsigned int persist_ext:8;

	unsigned int reserved:3;

	unsigned int n_plugs:5;

};

struct iec61883_iMPR {

	unsigned int data_rate:2;

	unsigned int reserved:6;

	unsigned int non_persist_ext:8;

	unsigned int persist_ext:8;

	unsigned int reserved2:3;

	unsigned int n_plugs:5;

};

struct iec61883_oPCR {

	unsigned int online:1;

	unsigned int bcast_connection:1;

	unsigned int n_p2p_connections:6;

	unsigned int reserved:2;

	unsigned int channel:6;

	unsigned int data_rate:2;

	unsigned int overhead_id:4;

	unsigned int payload:10;

};

struct iec61883_iPCR {

	unsigned int online:1;

	unsigned int bcast_connection:1;

	unsigned int n_p2p_connections:6;

	unsigned int reserved:2;

	unsigned int channel:6;

	unsigned int reserved2:16;

};

#else

struct iec61883_oMPR {

	unsigned int n_plugs:5;

	unsigned int reserved:3;

	unsigned int persist_ext:8;

	unsigned int non_persist_ext:8;

	unsigned int bcast_channel:6;

	unsigned int data_rate:2;

};

struct iec61883_iMPR {

	unsigned int n_plugs:5;

	unsigned int reserved2:3;

	unsigned int persist_ext:8;

	unsigned int non_persist_ext:8;

	unsigned int reserved:6;

	unsigned int data_rate:2;

};

struct iec61883_oPCR {

	unsigned int payload:10;

	unsigned int overhead_id:4;

	unsigned int data_rate:2;

	unsigned int channel:6;

	unsigned int reserved:2;

	unsigned int n_p2p_connections:6;

	unsigned int bcast_connection:1;

	unsigned int online:1;

};

struct iec61883_iPCR {

	unsigned int reserved2:16;

	unsigned int channel:6;

	unsigned int reserved:2;

	unsigned int n_p2p_connections:6;

	unsigned int bcast_connection:1;

	unsigned int online:1;

};

#endif

/**

 * iec61883_plug_get - Read a node's plug register.

 * @h: A raw1394 handle.

 * @n: The node id of the node to read

 * @a: The CSR offset address (relative to base) of the register to read.

 * @value: A pointer to a quadlet where the plug register's value will be stored.

 * 

 * This function handles bus to host endian conversion. It returns 0 for 

 * suceess or -1 for error (errno available).

 **/

extern int

iec61883_plug_get(raw1394handle_t h, nodeid_t n, nodeaddr_t a, quadlet_t *value);

/** 

 * iec61883_plug_set - Write a node's plug register.

 * @h: A raw1394 handle.

 * @n: The node id of the node to read

 * @a: The CSR offset address (relative to CSR base) of the register to write.

 * @value: A quadlet containing the new register value.

 *

 * This uses a compare/swap lock operation to safely write the

 * new register value, as required by IEC 61883-1.

 * This function handles host to bus endian conversion. It returns 0 for success

 * or -1 for error (errno available).

 **/

extern int

iec61883_plug_set(raw1394handle_t h, nodeid_t n, nodeaddr_t a, quadlet_t value);

/**

 * High level plug access macros

 */

#define iec61883_get_oMPR(h,n,v) iec61883_plug_get((h), (n), CSR_O_MPR, (quadlet_t *)(v))

#define iec61883_set_oMPR(h,n,v) iec61883_plug_set((h), (n), CSR_O_MPR, *((quadlet_t *)&(v)))

#define iec61883_get_oPCR0(h,n,v) iec61883_plug_get((h), (n), CSR_O_PCR_0, (quadlet_t *)(v))

#define iec61883_set_oPCR0(h,n,v) iec61883_plug_set((h), (n), CSR_O_PCR_0, *((quadlet_t *)&(v)))

#define iec61883_get_oPCRX(h,n,v,x) iec61883_plug_get((h), (n), CSR_O_PCR_0+(4*(x)), (quadlet_t *)(v))

#define iec61883_set_oPCRX(h,n,v,x) iec61883_plug_set((h), (n), CSR_O_PCR_0+(4*(x)), *((quadlet_t *)&(v)))

#define iec61883_get_iMPR(h,n,v) iec61883_plug_get((h), (n), CSR_I_MPR, (quadlet_t *)(v))

#define iec61883_set_iMPR(h,n,v) iec61883_plug_set((h), (n), CSR_I_MPR, *((quadlet_t *)&(v)))

#define iec61883_get_iPCR0(h,n,v) iec61883_plug_get((h), (n), CSR_I_PCR_0, (quadlet_t *)(v))

#define iec61883_set_iPCR0(h,n,v) iec61883_plug_set((h), (n), CSR_I_PCR_0, *((quadlet_t *)&(v)))

#define iec61883_get_iPCRX(h,n,v,x) iec61883_plug_get((h), (n), CSR_I_PCR_0+(4*(x)), (quadlet_t *)(v))

#define iec61883_set_iPCRX(h,n,v,x) iec61883_plug_set((h), (n), CSR_I_PCR_0+(4*(x)), *((quadlet_t *)&(v)))

/************ END PRIVATE INTERFACE **************/

#define FAIL(s) {fprintf(stderr, "libiec61883 error: %s\n", s);}

#define PLUGREPORT_GUID_HI 0x0C

#define PLUGREPORT_GUID_LO 0x10

static octlet_t get_guid(raw1394handle_t handle, nodeid_t node)

{

	quadlet_t       quadlet;

	octlet_t        offset;

	octlet_t    guid = 0;

	offset = CSR_REGISTER_BASE + CSR_CONFIG_ROM + PLUGREPORT_GUID_HI;

	raw1394_read(handle, node, offset, sizeof(quadlet_t), &quadlet);

	quadlet = htonl(quadlet);

	guid = quadlet;

	guid <<= 32;

	offset = CSR_REGISTER_BASE + CSR_CONFIG_ROM + PLUGREPORT_GUID_LO;

	raw1394_read(handle, node, offset, sizeof(quadlet_t), &quadlet);

	quadlet = htonl(quadlet);

	guid += quadlet;

	return guid;

}

int main(int argc, const char** argv)

{

    raw1394handle_t handle;

	int device;

	struct iec61883_oMPR o_mpr;

	struct iec61883_oPCR o_pcr;

	struct iec61883_iMPR i_mpr;

	struct iec61883_iPCR i_pcr;

    int numcards, port, i;

    struct raw1394_portinfo pinf[16];

	if (!(handle = raw1394_new_handle())) {

		perror("raw1394 - couldn't get handle");

		printf("This error usually means that the raw1394 driver is not loaded or that /dev/raw1394 does not exist.\n");

		exit( -1);

	}

	if ((numcards = raw1394_get_port_info(handle, pinf, 16)) < 0) {

		perror("raw1394 - couldn't get card info");

		exit( -1);

	}

	for (port = 0; port < numcards; port++)

	{

		if (raw1394_set_port(handle, port) < 0) {

			perror("raw1394 - couldn't set port");

			exit( -1);

		}

		printf( "Host Adapter %d\n==============\n", port);

		for (device = 0; device < raw1394_get_nodecount(handle); device++ )

		{

			octlet_t guid = get_guid(handle, 0xffc0 | device);

			printf( "\nNode %d GUID 0x%08x%08x\n------------------------------\n",

				device, (quadlet_t) (guid>>32), (quadlet_t) (guid & 0xffffffff));

			if (iec61883_get_oMPR(handle, 0xffc0 | device, &o_mpr) <  0)

				FAIL("error reading oMPR")

			else

			{

				printf( "oMPR n_plugs=%d, data_rate=%d, bcast_channel=%d\n", o_mpr.n_plugs, o_mpr.data_rate, o_mpr.bcast_channel);

				for (i = 0; i < o_mpr.n_plugs; i++)

				{

					if (iec61883_get_oPCRX( handle, 0xffc0 | device, &o_pcr, i) < 0)

						FAIL("error reading oPCR")

					else

					{

						printf( "oPCR[%d] online=%d, bcast_connection=%d, n_p2p_connections=%d\n", i,

							o_pcr.online, o_pcr.bcast_connection, o_pcr.n_p2p_connections);

						printf( "\tchannel=%d, data_rate=%d, overhead_id=%d, payload=%d\n", 

							o_pcr.channel, o_pcr.data_rate, o_pcr.overhead_id, o_pcr.payload);

					}

				}

			}

			if (iec61883_get_iMPR(handle, 0xffc0 | device, &i_mpr) <  0)

				FAIL("error reading iMPR")

			else

			{

				printf( "iMPR n_plugs=%d, data_rate=%d\n", i_mpr.n_plugs, i_mpr.data_rate);

				for (i = 0; i < i_mpr.n_plugs; i++)

				{

					if (iec61883_get_iPCRX( handle, 0xffc0 | device, &i_pcr, i) < 0)

						FAIL("error reading iPCR")

					else

					{

						printf( "iPCR[%d] online=%d, bcast_connection=%d, n_p2p_connections=%d\n", i,

							i_pcr.online, i_pcr.bcast_connection, i_pcr.n_p2p_connections);

						printf( "\tchannel=%d\n", 

							i_pcr.channel);

					}

				}

			}

		}

		printf("\n");

		raw1394_destroy_handle(handle);

		if (!(handle = raw1394_new_handle())) {

			perror("raw1394 - couldn't get handle");

			printf("This error usually means that the raw1394 driver is not loaded or that /dev/raw1394 does not exist.\n");

			exit( -1);

		}

		if ((numcards = raw1394_get_port_info(handle, pinf, 16)) < 0) {

			perror("raw1394 - couldn't get card info");

			exit( -1);

		}

	}

	return 0;

}