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Date:      Tue, 01 Jul 2008 17:26:27 -0700
From:      Sean Bruno <sbruno@miralink.com>
To:        freebsd-firewire@freebsd.org, Hidetoshi Shimokawa <simokawa@FreeBSD.ORG>
Subject:   Re: This is where I'm going with fwcontrol
Message-ID:  <486ACB33.50204@miralink.com>
In-Reply-To: <48695A6A.1030701@miralink.com>
References:  <486680D5.9070106@miralink.com> <48668196.6080602@miralink.com> <48695A6A.1030701@miralink.com>

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Sean Bruno wrote:
> Take a look at what I'm doing with fwcontrol if you have time.
>
> I'm modifying it such that it can find nodes on different "buses" or 
> cards and allowing it to parse all arguments before execution begins.  
> It's in the primitive stages right now and I'd really like to know 
> what you think.
>
> Here is a current diff against RELENG_7 which seems to be the same as 
> -CURRENT.
>
> Sean
> ------------------------------------------------------------------------
>
> _______________________________________________
> freebsd-firewire@freebsd.org mailing list
> http://lists.freebsd.org/mailman/listinfo/freebsd-firewire
> To unsubscribe, send any mail to "freebsd-firewire-unsubscribe@freebsd.org"
Here is today's version of fwcontrol.  

SUMMARY:
-- cleanup a couple of memory leaks missing free's
-- add "-p" to the usage display
-- rework main() while loop to not act on arguments.  Store those 
arguments so that multiple arguments can be passed on the command line. 
              example:  sudo fwcontrol -u 1 -r -o
--  Allow code to use "-u" to denote a different /dev/fwX device other 
thatn /dev/fw0.  This allows commands like a bus reset to act on a 
second firewire bus/card.
--  Maintain backwards compatibility when "-u" is not used to mean that 
the command is to use /dev/fw0
-- Minor break to compatiblity.  If fwcontrol is run with no arguments 
and there is more that one /dev/fwX device, it will iterate across all 
devices.  Old behavior was to simply display the first device.

I'd like some review of the code from anyone who has the time.  I think 
that this is worth while to merge into -CURRENT and possibly back into 
7.0 and 6.3 as I spent some considerable time on emulating the old behavior.

I cannot test the -S/R/M arguments as I do not have a firewire video 
camera and would love to know if I've broken anything!  :)



-- 
Sean Bruno
MiraLink Corporation
6015 NE 80th Ave, Ste 100
Portland, OR 97218
Phone 503-621-5143
Fax 503-621-5199


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Index: fwcontrol.c
===================================================================
--- fwcontrol.c	(revision 5540)
+++ fwcontrol.c	(working copy)
@@ -81,6 +81,7 @@
 		"\t-l: load and parse hex dump file of configuration ROM\n"
 		"\t-R: Receive DV or MPEG TS stream\n"
 		"\t-S: Send DV stream\n"
+		"\t-p: Display current PHY register settings\n"
 		"\t-m: set fwmem target\n");
 	exit(EX_USAGE);
 }
@@ -92,18 +93,14 @@
 	*(u_int32_t*)&(eui->octet[4]) = htonl(fweui->lo);
 }
 
-static struct fw_devlstreq *
-get_dev(int fd)
+static void
+get_dev(int fd, struct fw_devlstreq *data)
 {
-	struct fw_devlstreq *data;
-
-	data = (struct fw_devlstreq *)malloc(sizeof(struct fw_devlstreq));
 	if (data == NULL)
 		err(1, "malloc");
 	if( ioctl(fd, FW_GDEVLST, data) < 0) {
        			err(1, "ioctl");
 	}
-	return data;
 }
 
 static int
@@ -130,17 +127,23 @@
 	if (eui64_hostton(nodestr, &eui) != 0 && eui64_aton(nodestr, &eui) != 0)
 		return (-1);
 
-	data = get_dev(fd);
+	data = (struct fw_devlstreq *)malloc(sizeof(struct fw_devlstreq));
+	get_dev(fd,data);
 
 	for (i = 0; i < data->info_len; i++) {
 		fweui2eui64(&data->dev[i].eui, &tmpeui);
 		if (memcmp(&eui, &tmpeui, sizeof(struct eui64)) == 0) {
 			node = data->dev[i].dst;
+			if (data != NULL)
+				free(data);
 			goto gotnode;
 		}
 	}
-	if (i >= data->info_len)
+	if (i >= data->info_len) {
+		if (data != NULL)
+			free(data);
 		return (-1);
+	}
 
 gotnode:
 	if (node < 0 || node > 63)
@@ -158,7 +161,8 @@
 	char addr[EUI64_SIZ], hostname[40];
 	int i;
 
-	data = get_dev(fd);
+	data = (struct fw_devlstreq *)malloc(sizeof(struct fw_devlstreq));
+	get_dev(fd, data);
 	printf("%d devices (info_len=%d)\n", data->n, data->info_len);
 	printf("node           EUI64          status    hostname\n");
 	for (i = 0; i < data->info_len; i++) {
@@ -242,7 +246,7 @@
 }
 
 static void
-send_link_on(int fd, int node)
+link_on(int fd, int node)
 {
         struct fw_asyreq *asyreq;
 
@@ -290,7 +294,8 @@
 	u_int32_t max, reg, old;
 	int i;
 
-	data = get_dev(fd);
+	data = (struct fw_devlstreq *)malloc(sizeof(struct fw_devlstreq));
+	get_dev(fd, data);
 #define BUGET_REG 0xf0000218
 	for (i = 0; i < data->info_len; i++) {
 		devinfo = &data->dev[i];
@@ -344,7 +349,8 @@
 	int i, error;
 	struct fw_devlstreq *data;
 
-	data = get_dev(fd);
+	data = (struct fw_devlstreq *)malloc(sizeof(struct fw_devlstreq));
+	get_dev(fd, data);
 
 	for (i = 0; i < data->info_len; i++) {
 		if (data->dev[i].dst == node && data->dev[i].eui.lo != 0)
@@ -590,22 +596,16 @@
 	);
 }
 
-static void
-open_dev(int *fd, char *devbase)
+static int
+open_dev(int *fd, char *devname)
 {
-	char name[256];
-	int i;
-
 	if (*fd < 0) {
-		for (i = 0; i < 4; i++) {
-			snprintf(name, sizeof(name), "%s.%d", devbase, i);
-			if ((*fd = open(name, O_RDWR)) >= 0)
-				break;
-		}
+		*fd = open(devname, O_RDWR);
 		if (*fd < 0)
-			err(1, "open");
+			return(-1);
 
 	}
+	return(0);
 }
 
 static void
@@ -666,99 +666,147 @@
 int
 main(int argc, char **argv)
 {
+#define MAX_BOARDS 10
 	u_int32_t crom_buf[1024/4];
-	char devbase[1024] = "/dev/fw0";
-	int fd, ch, len=1024;
+	u_int32_t crom_buf_hex[1024/4];
+	char devbase[64];
+	const char *device_string = "/dev/fw";
+	int fd = -1, ch, len=1024;
+	int current_board = 0;
+ /*
+  * If !command_set, then -u will display the nodes for the board.
+  * This emulates the previous behavior when -u is passed by itself
+  */
+	int command_set = 0;
+	int open_needed = 0;
 	long tmp;
 	struct fw_eui64 eui;
 	struct eui64 target;
 	fwmethod *recvfn = NULL;
+/*
+ * Holders for which functions
+ * to iterate through
+ */
+	int display_board_only = 0;
+	int priority_budget = 0;
+	int display_crom = 0;
+	char *crom_string = NULL;
+	char *crom_string_hex = NULL;
+	int display_crom_hex = 0;
+	int adjust_gap_count = 0;
+	int reset_gap_count = 0;
+	int load_crom_from_file = 0;
+	int set_fwmem_target = 0;
+	long dump_phy_reg = 0;
+	int dump_topology = 0;
+	long send_link_on = 0;
+	int send_bus_reset = 0;
+	long send_reset_start = 0;
+	char *recv_data = NULL;
+	char *send_data = NULL;
 
-	fd = -1;
-
 	if (argc < 2) {
-		open_dev(&fd, devbase);
-		list_dev(fd);
+		for (current_board = 0; current_board < MAX_BOARDS; current_board++) {
+			snprintf(devbase, sizeof(devbase), "%s%d", device_string, current_board);
+			if (open_dev(&fd, devbase) < 0) {
+				return(0);
+			}
+			list_dev(fd);
+			close(fd);
+			fd = -1;
+		}
 	}
-
-	while ((ch = getopt(argc, argv, "M:f:g:m:o:s:b:prtc:d:l:u:R:S:")) != -1)
+       /*
+	* Parse all command line options, then execute requested operations.
+	*/
+	while ((ch = getopt(argc, argv, "M:f:g:m:o:s:b:prtc:d:l:u:R:S:")) != -1) {
 		switch(ch) {
 		case 'b':
-			tmp = strtol(optarg, NULL, 0);
-			if (tmp < 0 || tmp > (long)0xffffffff)
+			priority_budget = strtol(optarg, NULL, 0);
+			if (priority_budget < 0 || priority_budget > (long)0xffffffff)
 				errx(EX_USAGE, "invalid number: %s", optarg);
-			open_dev(&fd, devbase);
-			set_pri_req(fd, tmp);
+			command_set = 1;
+			open_needed = 1;
+			display_board_only = 0;
 			break;
 		case 'c':
-			open_dev(&fd, devbase);
-			tmp = str2node(fd, optarg);
-			get_crom(fd, tmp, crom_buf, len);
-			show_crom(crom_buf);
+			crom_string = malloc(strlen(optarg)+1);
+			strcpy(crom_string, optarg);
+			display_crom = 1;
+			open_needed = 1;
+			command_set = 1;
+			display_board_only = 0;
 			break;
 		case 'd':
-			open_dev(&fd, devbase);
-			tmp = str2node(fd, optarg);
-			get_crom(fd, tmp, crom_buf, len);
-			dump_crom(crom_buf);
+			crom_string_hex = malloc(strlen(optarg)+1);
+			strcpy(crom_string_hex, optarg);
+			display_crom_hex = 1;
+			open_needed = 1;
+			command_set = 1;
+			display_board_only = 0;
 			break;
 		case 'f':
-			tmp = strtol(optarg, NULL, 0);
-			open_dev(&fd, devbase);
-			send_phy_config(fd, tmp, -1);
+			adjust_gap_count = strtol(optarg, NULL, 0);
+			open_needed = 1;
+			command_set = 1;
+			display_board_only = 0;
 			break;
 		case 'g':
-			tmp = strtol(optarg, NULL, 0);
-			open_dev(&fd, devbase);
-			send_phy_config(fd, -1, tmp);
+			reset_gap_count = strtol(optarg, NULL, 0);
+			open_needed = 1;
+			command_set = 1;
+			display_board_only = 0;
 			break;
 		case 'l':
+			load_crom_from_file = 1;
 			load_crom(optarg, crom_buf);
-			show_crom(crom_buf);
+			command_set = 1;
+			display_board_only = 0;
 			break;
 		case 'm':
-		       if (eui64_hostton(optarg, &target) != 0 &&
-			   eui64_aton(optarg, &target) != 0)
+			set_fwmem_target = 1;
+			open_needed = 0;
+			command_set = 1;
+			display_board_only = 0;
+			if (eui64_hostton(optarg, &target) != 0 &&
+			    eui64_aton(optarg, &target) != 0)
 				errx(EX_USAGE, "invalid target: %s", optarg);
-			eui.hi = ntohl(*(u_int32_t*)&(target.octet[0]));
-			eui.lo = ntohl(*(u_int32_t*)&(target.octet[4]));
-			sysctl_set_int("hw.firewire.fwmem.eui64_hi", eui.hi);
-			sysctl_set_int("hw.firewire.fwmem.eui64_lo", eui.lo);
 			break;
 		case 'o':
-			open_dev(&fd, devbase);
-			tmp = str2node(fd, optarg);
-			send_link_on(fd, tmp);
+			send_link_on = str2node(fd, optarg);
+			open_needed = 1;
+			command_set = 1;
+			display_board_only = 0;
 			break;
 		case 'p':
-			open_dev(&fd, devbase);
-			dump_phy_registers(fd);
+			dump_phy_reg = 1;
+			open_needed = 1;
+			command_set = 1;
+			display_board_only = 0;
 			break;
 		case 'r':
-			open_dev(&fd, devbase);
-			if(ioctl(fd, FW_IBUSRST, &tmp) < 0)
-                       		err(1, "ioctl");
+			send_bus_reset = 1;
+			open_needed = 1;
+			command_set = 1;
+			display_board_only = 0;
 			break;
 		case 's':
-			open_dev(&fd, devbase);
-			tmp = str2node(fd, optarg);
-			reset_start(fd, tmp);
+			send_reset_start  = str2node(fd, optarg);
+			open_needed = 1;
+			command_set = 1;
+			display_board_only = 0;
 			break;
 		case 't':
-			open_dev(&fd, devbase);
-			show_topology_map(fd);
+			dump_topology = 1;
+			open_needed = 1;
+			command_set = 1;
+			display_board_only = 0;
 			break;
 		case 'u':
-			tmp = strtol(optarg, NULL, 0);
-			snprintf(devbase, sizeof(devbase), "/dev/fw%ld", tmp);
-			if (fd > 0) {
-				close(fd);
-				fd = -1;
-			}
-			if (argc == optind) {
-				open_dev(&fd, devbase);
-				list_dev(fd);
-			}
+			if(!command_set)
+				display_board_only = 1;
+			current_board = strtol(optarg, NULL, 0);
+			open_needed = 1;
 			break;
 #define TAG	(1<<6)
 #define CHANNEL	63
@@ -774,22 +822,151 @@
 				errx(EX_USAGE, "unrecognized method: %s",
 				    optarg);
 			}
+			command_set = 1;
+			display_board_only = 0;
 			break;
 		case 'R':
-			open_dev(&fd, devbase);
-			if (recvfn == NULL) /* guess... */
-				recvfn = detect_recv_fn(fd, TAG | CHANNEL);
-			close(fd);
-			fd = -1;
-			open_dev(&fd, devbase);
-			(*recvfn)(fd, optarg, TAG | CHANNEL, -1);
+			recv_data = malloc(strlen(optarg)+1);
+			strcpy(recv_data, optarg);
+			open_needed = 1;
+			command_set = 1;
+			display_board_only = 0;
 			break;
 		case 'S':
-			open_dev(&fd, devbase);
-			dvsend(fd, optarg, TAG | CHANNEL, -1);
+			send_data = malloc(strlen(optarg)+1);
+			strcpy(send_data, optarg);
+			open_needed = 1;
+			display_board_only = 0;
 			break;
 		default:
 			usage();
+			return 0;
 		}
+	} /* end while */
+
+       /*
+	* If -u <bus_number> is passed, execute 
+	* command for that card only.
+	*
+	* If -u <bus_number> is not passed, execute
+	* command for card 0 only. 
+	*
+	*/
+	if(open_needed){
+		snprintf(devbase, sizeof(devbase), "%s%d", device_string, current_board);
+		if (open_dev(&fd, devbase) < 0)
+			return(EIO);
+	}
+	/*
+	 * display the nodes on this board "-u"
+	 * only
+	 */
+	if (display_board_only)
+		list_dev(fd);
+
+	/*
+	 * dump_phy_reg "-p" 
+	 */
+	if (dump_phy_reg)
+		dump_phy_registers(fd);
+			
+	/*
+	 * send a BUS_RESET Event "-r"
+	 */
+	if (send_bus_reset) {
+		if(ioctl(fd, FW_IBUSRST, &tmp) < 0)
+               		err(1, "ioctl");
+	}
+	/*
+	 * Print out the CROM for this node "-c"
+	 */
+	if (display_crom) {
+		tmp = str2node(fd, crom_string);
+		get_crom(fd, tmp, crom_buf, len);
+		show_crom(crom_buf);
+		free(crom_string);
+	}
+	/*
+	 * Hex Dump the CROM for this node "-d"
+	 */
+	if (display_crom_hex) {
+		tmp = str2node(fd, crom_string_hex);
+		get_crom(fd, tmp, crom_buf_hex, len);
+		dump_crom(crom_buf_hex);
+		free(crom_string_hex);
+	}
+	/*
+	 * Set Priority Budget to value for this node "-b"
+	 */
+	if (priority_budget)
+		set_pri_req(fd, priority_budget);
+
+	/*
+	 * Adjust the gap count for this card/bus to value "-f"
+	 */
+	if (adjust_gap_count)
+		send_phy_config(fd, adjust_gap_count, -1);
+
+	/*
+	 * Reset the gap count for this card/bus  "-g"
+	 */
+	if (reset_gap_count)
+		send_phy_config(fd, -1, tmp);
+
+	/*
+	 * Load a CROM from a file "-l"
+	 */
+	if (load_crom_from_file)
+		show_crom(crom_buf);
+	/*
+	 * Set the fwmem target for a node to argument "-m"
+	 */
+	if (set_fwmem_target) {
+		eui.hi = ntohl(*(u_int32_t*)&(target.octet[0]));
+		eui.lo = ntohl(*(u_int32_t*)&(target.octet[4]));
+		sysctl_set_int("hw.firewire.fwmem.eui64_hi", eui.hi);
+		sysctl_set_int("hw.firewire.fwmem.eui64_lo", eui.lo);
+	}
+
+	/*
+	 * Send a link on to this board/bus "-o"
+	 */
+	if (send_link_on)
+		link_on(fd, send_link_on);
+
+	/*
+	 * Send a reset start to this board/bus "-s"
+	 */
+	if (send_reset_start)
+		reset_start(fd, send_reset_start);
+
+	/*
+	 * Dump the node topology for this board/bus "-t"
+	 */
+	if (dump_topology)
+		show_topology_map(fd);
+
+	/*
+	 * Recieve data file from node "-R"
+	 */
+	if (recv_data != NULL){
+		if (recvfn == NULL) /* guess... */
+			recvfn = detect_recv_fn(fd, TAG | CHANNEL);
+		(*recvfn)(fd, recv_data, TAG | CHANNEL, -1);
+		free(recv_data);
+	}
+
+	/*
+	 * Send data file to node "-S"
+	 */
+	if (send_data != NULL){
+		dvsend(fd, send_data, TAG | CHANNEL, -1);
+		free(send_data);
+	}
+
+	if (fd > 0) {
+		close(fd);
+		fd = -1;
+	}
 	return 0;
 }

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