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Commit 18079ece authored by Johan Hovold's avatar Johan Hovold Committed by Greg Kroah-Hartman
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greybus: operation: add helper for creating core operations 



Add a new core operation flag and a helper that core can use to create
core operations.

This will be used to implement the ping operations that core sends as
part of connection tear down.

Note that a new trace point is also added.

Signed-off-by: default avatarJohan Hovold <johan@hovoldconsulting.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@google.com>
parent 77bbbcf6

drivers/staging/greybus/greybus_trace.h

+5 −0
Original line number Diff line number Diff line
@@ -130,6 +130,11 @@ DECLARE_EVENT_CLASS(gb_operation, 
 */

DEFINE_OPERATION_EVENT(gb_operation_create);



/*

 * Occurs after a new core operation has been created.

 */

DEFINE_OPERATION_EVENT(gb_operation_create_core);



/*

 * Occurs after a new operation has been created for an incoming

 * request has been successfully created and initialized.

drivers/staging/greybus/operation.c

+20 −0
Original line number Diff line number Diff line
@@ -571,6 +571,26 @@ gb_operation_create_flags(struct gb_connection *connection, 
}

EXPORT_SYMBOL_GPL(gb_operation_create_flags);



struct gb_operation *

gb_operation_create_core(struct gb_connection *connection,

				u8 type, size_t request_size,

				size_t response_size, unsigned long flags,

				gfp_t gfp)

{

	struct gb_operation *operation;



	flags |= GB_OPERATION_FLAG_CORE;



	operation = gb_operation_create_common(connection, type,

						request_size, response_size,

						flags, gfp);

	if (operation)

		trace_gb_operation_create_core(operation);



	return operation;

}

/* Do not export this function. */



size_t gb_operation_get_payload_size_max(struct gb_connection *connection)

{

	struct gb_host_device *hd = connection->hd;

drivers/staging/greybus/operation.h

+12 −0
Original line number Diff line number Diff line
@@ -60,6 +60,7 @@ struct gb_message { 
#define GB_OPERATION_FLAG_INCOMING		BIT(0)

#define GB_OPERATION_FLAG_UNIDIRECTIONAL	BIT(1)

#define GB_OPERATION_FLAG_SHORT_RESPONSE	BIT(2)

#define GB_OPERATION_FLAG_CORE			BIT(3)



#define GB_OPERATION_FLAG_USER_MASK	(GB_OPERATION_FLAG_SHORT_RESPONSE | \

					 GB_OPERATION_FLAG_UNIDIRECTIONAL)
@@ -123,6 +124,11 @@ gb_operation_short_response_allowed(struct gb_operation *operation) 
	return operation->flags & GB_OPERATION_FLAG_SHORT_RESPONSE;

}



static inline bool gb_operation_is_core(struct gb_operation *operation)

{

	return operation->flags & GB_OPERATION_FLAG_CORE;

}



void gb_connection_recv(struct gb_connection *connection,

					void *data, size_t size);
@@ -144,6 +150,12 @@ gb_operation_create(struct gb_connection *connection, 
						response_size, 0, gfp);

}



struct gb_operation *

gb_operation_create_core(struct gb_connection *connection,

				u8 type, size_t request_size,

				size_t response_size, unsigned long flags,

				gfp_t gfp);



void gb_operation_get(struct gb_operation *operation);

void gb_operation_put(struct gb_operation *operation);