sgi-gru: add support to the GRU driver for message queue interrupts
Add support to the GRU driver for message queue interrupts.
Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Dean Nelson <dcn@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/misc/sgi-gru/grukservices.h b/drivers/misc/sgi-gru/grukservices.h
index eb17e0a..747ed31 100644
--- a/drivers/misc/sgi-gru/grukservices.h
+++ b/drivers/misc/sgi-gru/grukservices.h
@@ -41,6 +41,15 @@
* - gru_create_message_queue() needs interrupt vector info
*/
+struct gru_message_queue_desc {
+ void *mq; /* message queue vaddress */
+ unsigned long mq_gpa; /* global address of mq */
+ int qlines; /* queue size in CL */
+ int interrupt_vector; /* interrupt vector */
+ int interrupt_pnode; /* pnode for interrupt */
+ int interrupt_apicid; /* lapicid for interrupt */
+};
+
/*
* Initialize a user allocated chunk of memory to be used as
* a message queue. The caller must ensure that the queue is
@@ -51,14 +60,19 @@
* to manage the queue.
*
* Input:
- * p pointer to user allocated memory.
+ * mqd pointer to message queue descriptor
+ * p pointer to user allocated mesq memory.
* bytes size of message queue in bytes
+ * vector interrupt vector (zero if no interrupts)
+ * nasid nasid of blade where interrupt is delivered
+ * apicid apicid of cpu for interrupt
*
* Errors:
* 0 OK
* >0 error
*/
-extern int gru_create_message_queue(void *p, unsigned int bytes);
+extern int gru_create_message_queue(struct gru_message_queue_desc *mqd,
+ void *p, unsigned int bytes, int nasid, int vector, int apicid);
/*
* Send a message to a message queue.
@@ -68,7 +82,7 @@
*
*
* Input:
- * xmq message queue - must be a UV global physical address
+ * mqd pointer to message queue descriptor
* mesg pointer to message. Must be 64-bit aligned
* bytes size of message in bytes
*
@@ -77,8 +91,8 @@
* >0 Send failure - see error codes below
*
*/
-extern int gru_send_message_gpa(unsigned long mq_gpa, void *mesg,
- unsigned int bytes);
+extern int gru_send_message_gpa(struct gru_message_queue_desc *mqd,
+ void *mesg, unsigned int bytes);
/* Status values for gru_send_message() */
#define MQE_OK 0 /* message sent successfully */
@@ -94,10 +108,11 @@
* API extensions may allow for out-of-order freeing.
*
* Input
- * mq message queue
+ * mqd pointer to message queue descriptor
* mesq message being freed
*/
-extern void gru_free_message(void *mq, void *mesq);
+extern void gru_free_message(struct gru_message_queue_desc *mqd,
+ void *mesq);
/*
* Get next message from message queue. Returns pointer to
@@ -106,13 +121,13 @@
* in order to move the queue pointers to next message.
*
* Input
- * mq message queue
+ * mqd pointer to message queue descriptor
*
* Output:
* p pointer to message
* NULL no message available
*/
-extern void *gru_get_next_message(void *mq);
+extern void *gru_get_next_message(struct gru_message_queue_desc *mqd);
/*