firewire: Move sync and tag parameters to start_iso ioctl.

Setting these at create_context time or start_iso time doesn't matter
much, but raw1394 sets them at start_iso time so that will be easier to
emulate this way.
Signed-off-by: Kristian Høgsberg <krh@redhat.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>

drivers/firewire/fw-device-cdev.c

@@ -546,12 +546,6 @@ static int ioctl_create_iso_context(struct client *client, void __user *arg)
 
 	switch (request.type) {
 	case FW_ISO_CONTEXT_RECEIVE:
-		if (request.sync > 15)
-			return -EINVAL;
-
-		if (request.tags == 0 || request.tags > 15)
-			return -EINVAL;
-
 		if (request.header_size < 4 || (request.header_size & 3))
 			return -EINVAL;
 
@@ -567,13 +561,10 @@ static int ioctl_create_iso_context(struct client *client, void __user *arg)
 		return -EINVAL;
 	}
 
-
 	client->iso_context = fw_iso_context_create(client->device->card,
 						    request.type,
 						    request.channel,
 						    request.speed,
-						    request.sync,
-						    request.tags,
 						    request.header_size,
 						    iso_callback, client);
 	if (IS_ERR(client->iso_context))
@@ -678,7 +669,16 @@ static int ioctl_start_iso(struct client *client, void __user *arg)
 	if (copy_from_user(&request, arg, sizeof request))
 		return -EFAULT;
 
-	return fw_iso_context_start(client->iso_context, request.cycle);
+	if (client->iso_context->type == FW_ISO_CONTEXT_RECEIVE) {
+		if (request.tags == 0 || request.tags > 15)
+			return -EINVAL;
+
+		if (request.sync > 15)
+			return -EINVAL;
+	}
+
+	return fw_iso_context_start(client->iso_context,
+				    request.cycle, request.sync, request.tags);
 }
 
 static int ioctl_stop_iso(struct client *client, void __user *arg)

drivers/firewire/fw-device-cdev.h

@@ -194,8 +194,6 @@ struct fw_cdev_create_iso_context {
 	__u32 header_size;
 	__u32 channel;
 	__u32 speed;
-	__u32 sync;
-	__u32 tags;
 };
 
 struct fw_cdev_iso_packet {
@@ -216,6 +214,8 @@ struct fw_cdev_queue_iso {
 
 struct fw_cdev_start_iso {
 	__s32 cycle;
+	__u32 sync;
+	__u32 tags;
 };
 
 #endif /* __fw_cdev_h */

drivers/firewire/fw-iso.c

@@ -107,14 +107,12 @@ void fw_iso_buffer_destroy(struct fw_iso_buffer *buffer,
 
 struct fw_iso_context *
 fw_iso_context_create(struct fw_card *card, int type,
-		      int channel, int speed,
-		      int sync, int tags, size_t header_size,
+		      int channel, int speed, size_t header_size,
 		      fw_iso_callback_t callback, void *callback_data)
 {
 	struct fw_iso_context *ctx;
 
-	ctx = card->driver->allocate_iso_context(card, type,
-						 sync, tags, header_size);
+	ctx = card->driver->allocate_iso_context(card, type, header_size);
 	if (IS_ERR(ctx))
 		return ctx;
 
@@ -122,8 +120,6 @@ fw_iso_context_create(struct fw_card *card, int type,
 	ctx->type = type;
 	ctx->channel = channel;
 	ctx->speed = speed;
-	ctx->sync = sync;
-	ctx->tags = tags;
 	ctx->header_size = header_size;
 	ctx->callback = callback;
 	ctx->callback_data = callback_data;
@@ -141,9 +137,9 @@ void fw_iso_context_destroy(struct fw_iso_context *ctx)
 EXPORT_SYMBOL(fw_iso_context_destroy);
 
 int
-fw_iso_context_start(struct fw_iso_context *ctx, int cycle)
+fw_iso_context_start(struct fw_iso_context *ctx, int cycle, int sync, int tags)
 {
-	return ctx->card->driver->start_iso(ctx, cycle);
+	return ctx->card->driver->start_iso(ctx, cycle, sync, tags);
 }
 EXPORT_SYMBOL(fw_iso_context_start);
 

drivers/firewire/fw-ohci.c

@@ -1294,8 +1294,7 @@ static int handle_it_packet(struct context *context,
 }
 
 static struct fw_iso_context *
-ohci_allocate_iso_context(struct fw_card *card, int type,
-			  int sync, int tags, size_t header_size)
+ohci_allocate_iso_context(struct fw_card *card, int type, size_t header_size)
 {
 	struct fw_ohci *ohci = fw_ohci(card);
 	struct iso_context *ctx, *list;
@@ -1357,7 +1356,8 @@ ohci_allocate_iso_context(struct fw_card *card, int type,
 	return ERR_PTR(retval);
 }
 
-static int ohci_start_iso(struct fw_iso_context *base, s32 cycle)
+static int ohci_start_iso(struct fw_iso_context *base,
+			  s32 cycle, u32 sync, u32 tags)
 {
 	struct iso_context *ctx = container_of(base, struct iso_context, base);
 	struct fw_ohci *ohci = ctx->context.ohci;
@@ -1379,8 +1379,7 @@ static int ohci_start_iso(struct fw_iso_context *base, s32 cycle)
 		reg_write(ohci, OHCI1394_IsoRecvIntEventClear, 1 << index);
 		reg_write(ohci, OHCI1394_IsoRecvIntMaskSet, 1 << index);
 		reg_write(ohci, context_match(ctx->context.regs),
-			  (ctx->base.tags << 28) |
-			  (ctx->base.sync << 8) | ctx->base.channel);
+			  (tags << 28) | (sync << 8) | ctx->base.channel);
 		context_run(&ctx->context,
 			    IR_CONTEXT_DUAL_BUFFER_MODE |
 			    IR_CONTEXT_ISOCH_HEADER);

drivers/firewire/fw-transaction.h

@@ -363,8 +363,6 @@ struct fw_iso_context {
 	int type;
 	int channel;
 	int speed;
-	int sync;
-	int tags;
 	size_t header_size;
 	fw_iso_callback_t callback;
 	void *callback_data;
@@ -382,8 +380,7 @@ fw_iso_buffer_destroy(struct fw_iso_buffer *buffer, struct fw_card *card);
 
 struct fw_iso_context *
 fw_iso_context_create(struct fw_card *card, int type,
-		      int channel, int speed,
-		      int sync, int tags, size_t header_size,
+		      int channel, int speed, size_t header_size,
 		      fw_iso_callback_t callback, void *callback_data);
 
 void
@@ -396,7 +393,8 @@ fw_iso_context_queue(struct fw_iso_context *ctx,
 		     unsigned long payload);
 
 int
-fw_iso_context_start(struct fw_iso_context *ctx, int cycle);
+fw_iso_context_start(struct fw_iso_context *ctx,
+		     int cycle, int sync, int tags);
 
 int
 fw_iso_context_stop(struct fw_iso_context *ctx);
@@ -436,11 +434,12 @@ struct fw_card_driver {
 	u64 (*get_bus_time) (struct fw_card *card);
 
 	struct fw_iso_context *
-	(*allocate_iso_context)(struct fw_card *card, int sync, int tags,
+	(*allocate_iso_context)(struct fw_card *card,
 				int type, size_t header_size);
 	void (*free_iso_context)(struct fw_iso_context *ctx);
 
-	int (*start_iso)(struct fw_iso_context *ctx, s32 cycle);
+	int (*start_iso)(struct fw_iso_context *ctx,
+			 s32 cycle, u32 sync, u32 tags);
 
 	int (*queue_iso)(struct fw_iso_context *ctx,
 			 struct fw_iso_packet *packet,