/* plugctl.c

 * A program to get or set any MPR or PCR register value.

 * 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 <strings.h>

#include <errno.h>

/* linux1394 includes */

#include <libraw1394/raw1394.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);}

static void usage()

{

	printf("plugctl: [-p port}] [-n node] <plug>.<attribute>[=<value>]\n"); 

	printf("The equal sign determines whether you want to get or set the value\n"); 

	printf("of a plug's attribute.\n"); 

	printf("<plug> is one of oMPR, iMPR, oPCR[n], or iPCR[n] (case insensitive).\n");

	printf("Please supply a numerical index for [n]!\n");

}

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

{

    raw1394handle_t handle;

	struct iec61883_oMPR o_mpr;

	struct iec61883_oPCR o_pcr;

	struct iec61883_iMPR i_mpr;

	struct iec61883_iPCR i_pcr;

	int result = 0;

	int port = 0;

	int node = 0xffc0;

	int is_got_ompr = 0, is_got_opcr[32], is_got_impr = 0, is_got_ipcr[32];

	int is_set_ompr = 0, is_set_opcr[32], is_set_impr = 0, is_set_ipcr[32];

	int i;

	if (argc == 1) {

		usage();

		return 0;

	}

	for (i = 0; i < 32; i++) {

		is_got_opcr[i] = is_got_ipcr[i] = 0;

		is_set_opcr[i] = is_set_ipcr[i] = 0;

	}

	for (i = 1; i < argc; i++)

	{

		if (strcmp (argv[i], "-p") == 0)

			port = atoi (argv[++i]);

	}

	if (!(handle = raw1394_new_handle_on_port(port))) {

		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");

		return EFAULT;

	}

	for (i = 1; i < argc && result == 0; i++)

	{

		if (strcmp (argv[i], "-n") == 0) {

			node |= atoi (argv[++i]);

		} else if (strncmp (argv[i], "-h", 2) == 0) {

			usage();

			return 0;

		} else {

			char *plug = strdup (argv[i]);

			char *attribute = strchr (plug, '.');

			if (attribute != NULL) {

				char *valuestr = strchr (attribute, '=');

				*attribute++  = '\0';

				if (valuestr != NULL) {

					/* set */

					int value;

					*valuestr++ = '\0';

					value = atoi (valuestr);

					if (strcasecmp (plug, "ompr") == 0) {

						if (!is_got_ompr) {

							result = iec61883_get_oMPR (handle, node, &o_mpr);

							if (result < 0)

								continue;

							is_got_ompr = 1;

						}

						is_set_ompr = 1;

						if (strcasecmp (attribute, "data_rate") == 0) {

							o_mpr.data_rate = value;

						} else if (strcasecmp (attribute, "bcast_channel") == 0) {

							o_mpr.bcast_channel = value;

						} else if (strcasecmp (attribute, "non_persist_ext") == 0) {

							o_mpr.non_persist_ext = value;

						} else if (strcasecmp (attribute, "persist_ext") == 0) {

							o_mpr.persist_ext = value;

						} else if (strcasecmp (attribute, "reserved") == 0) {

							o_mpr.reserved = value;

						} else if (strcasecmp (attribute, "n_plugs") == 0) {

							o_mpr.n_plugs = value;

						} else {

							result = EINVAL;

							continue;

						}

					} else if (strcasecmp (plug, "impr") == 0) {

						if (!is_got_impr) {

							result = iec61883_get_iMPR (handle, node, &i_mpr);

							if (result < 0)

								continue;

							is_got_impr = 1;

						}

						is_set_impr = 1;

						if (strcasecmp (attribute, "data_rate") == 0) {

							i_mpr.data_rate = value;

						} else if (strcasecmp (attribute, "reserved") == 0) {

							i_mpr.reserved = value;

						} else if (strcasecmp (attribute, "non_persist_ext") == 0) {

							i_mpr.non_persist_ext = value;

						} else if (strcasecmp (attribute, "persist_ext") == 0) {

							i_mpr.persist_ext = value;

						} else if (strcasecmp (attribute, "reserved2") == 0) {

							i_mpr.reserved2 = value;

						} else if (strcasecmp (attribute, "n_plugs") == 0) {

							i_mpr.n_plugs = value;

						} else {

							result = EINVAL;

							continue;

						}

					} else if (strncasecmp (plug, "opcr[", 5) == 0) {

						int idx = atoi (plug + 5);

						if (!is_got_opcr[idx]) {

							result = iec61883_get_oPCRX (handle, node, &o_pcr, idx);

							if (result < 0)

								continue;

							is_got_opcr[idx] = 1;

						}

						is_set_opcr[idx] = 1;

						if (strcasecmp (attribute, "online") == 0) {

							o_pcr.online = value;

						} else if (strcasecmp (attribute, "bcast_connection") == 0) {

							o_pcr.bcast_connection = value;

						} else if (strcasecmp (attribute, "n_p2p_connections") == 0) {

							o_pcr.n_p2p_connections = value;

						} else if (strcasecmp (attribute, "reserved") == 0) {

							o_pcr.reserved = value;

						} else if (strcasecmp (attribute, "channel") == 0) {

							o_pcr.channel = value;

						} else if (strcasecmp (attribute, "data_rate") == 0) {

							o_pcr.data_rate = value;

						} else if (strcasecmp (attribute, "overhead_id") == 0) {

							o_pcr.overhead_id = value;

						} else if (strcasecmp (attribute, "payload") == 0) {

							o_pcr.payload = value;

						} else {

							result = EINVAL;

							continue;

						}

					} else if (strncasecmp (plug, "ipcr[", 5) == 0) {

						int idx = atoi (plug + 5);

						if (!is_got_ipcr[idx]) {

							result = iec61883_get_iPCRX (handle, node, &i_pcr, idx);

							if (result < 0)

								continue;

							is_got_ipcr[idx] = 1;

						}

						is_set_ipcr[idx] = 1;

						if (strcasecmp (attribute, "online") == 0) {

							i_pcr.online = value;

						} else if (strcasecmp (attribute, "bcast_connection") == 0) {

							i_pcr.bcast_connection = value;

						} else if (strcasecmp (attribute, "n_p2p_connections") == 0) {

							i_pcr.n_p2p_connections = value;

						} else if (strcasecmp (attribute, "reserved") == 0) {

							i_pcr.reserved = value;

						} else if (strcasecmp (attribute, "channel") == 0) {

							i_pcr.channel = value;

						} else if (strcasecmp (attribute, "reserved2") == 0) {

							i_pcr.reserved2 = value;

						} else {

							result = EINVAL;

							continue;

						}

					} else {

						result = EINVAL;

						continue;

					}

				} else {

					/* get */

					if (strcasecmp (plug, "ompr") == 0) {

						result = iec61883_get_oMPR (handle, node, &o_mpr);

						if (result < 0)

							continue;

						if (strcasecmp (attribute, "data_rate") == 0) {

							printf ("%d\n", o_mpr.data_rate);

						} else if (strcasecmp (attribute, "bcast_channel") == 0) {

							printf ("%d\n", o_mpr.bcast_channel);

						} else if (strcasecmp (attribute, "non_persist_ext") == 0) {

							printf ("%d\n", o_mpr.non_persist_ext);

						} else if (strcasecmp (attribute, "persist_ext") == 0) {

							printf ("%d\n", o_mpr.persist_ext);

						} else if (strcasecmp (attribute, "reserved") == 0) {

							printf ("%d\n", o_mpr.reserved);

						} else if (strcasecmp (attribute, "n_plugs") == 0) {

							printf ("%d\n", o_mpr.n_plugs);

						} else {

							result = EINVAL;

							continue;

						}

					} else if (strcasecmp (plug, "impr") == 0) {

						result = iec61883_get_iMPR (handle, node, &i_mpr);

						if (result < 0)

							continue;

						if (strcasecmp (attribute, "data_rate") == 0) {

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

						} else if (strcasecmp (attribute, "reserved") == 0) {

							printf ("%d\n", i_mpr.reserved);

						} else if (strcasecmp (attribute, "non_persist_ext") == 0) {

							printf ("%d\n", i_mpr.non_persist_ext);

						} else if (strcasecmp (attribute, "persist_ext") == 0) {

							printf ("%d\n", i_mpr.persist_ext);

						} else if (strcasecmp (attribute, "reserved2") == 0) {

							printf ("%d\n", i_mpr.reserved2);

						} else if (strcasecmp (attribute, "n_plugs") == 0) {

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

						} else {

							result = EINVAL;

							continue;

						}

					} else if (strncasecmp (plug, "opcr[", 5) == 0) {

						int idx = atoi (plug + 5);

						result = iec61883_get_oPCRX (handle, node, &o_pcr, idx);

						if (result < 0)

							continue;

						if (strcasecmp (attribute, "online") == 0) {

							printf ("%d\n", o_pcr.online);

						} else if (strcasecmp (attribute, "bcast_connection") == 0) {

							printf ("%d\n", o_pcr.bcast_connection);

						} else if (strcasecmp (attribute, "n_p2p_connections") == 0) {

							printf ("%d\n", o_pcr.n_p2p_connections);

						} else if (strcasecmp (attribute, "reserved") == 0) {

							printf ("%d\n", o_pcr.reserved);

						} else if (strcasecmp (attribute, "channel") == 0) {

							printf ("%d\n", o_pcr.channel);

						} else if (strcasecmp (attribute, "data_rate") == 0) {

							printf ("%d\n", o_pcr.data_rate);

						} else if (strcasecmp (attribute, "overhead_id") == 0) {

							printf ("%d\n", o_pcr.overhead_id);

						} else if (strcasecmp (attribute, "payload") == 0) {

							printf ("%d\n", o_pcr.payload);

						} else {

							result = EINVAL;

							continue;

						}

					} else if (strncasecmp (plug, "ipcr[", 5) == 0) {

						int idx = atoi (plug + 5);

						result = iec61883_get_iPCRX (handle, node, &i_pcr, idx);

						if (result < 0)

							continue;

						if (strcasecmp (attribute, "online") == 0) {

							printf ("%d\n", i_pcr.online);

						} else if (strcasecmp (attribute, "bcast_connection") == 0) {

							printf ("%d\n", i_pcr.bcast_connection);

						} else if (strcasecmp (attribute, "n_p2p_connections") == 0) {

							printf ("%d\n", i_pcr.n_p2p_connections);

						} else if (strcasecmp (attribute, "reserved") == 0) {

							printf ("%d\n", i_pcr.reserved);

						} else if (strcasecmp (attribute, "channel") == 0) {

							printf ("%d\n", i_pcr.channel);

						} else if (strcasecmp (attribute, "reserved2") == 0) {

							printf ("%d\n", i_pcr.reserved2);

						} else {

							result = EINVAL;

							continue;

						}

					} else {

						result = EINVAL;

						continue;

					}

				}

			}

			free (plug);

		}

	}

	if (result == 0 && is_set_ompr)

		result = iec61883_set_oMPR (handle, node, o_mpr);

	if (result == 0 && is_set_impr)

		result = iec61883_set_iMPR (handle, node, i_mpr);

	for (i = 0; result == 0 && i < 32; i++) {

		if (is_set_opcr[i])

			result = iec61883_set_oPCRX (handle, node, o_pcr, i);

		if (is_set_ipcr[i])

			result = iec61883_set_iPCRX (handle, node, i_pcr, i);

	}

	raw1394_destroy_handle(handle);

	return result;

}