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sgi-gru: add support to the GRU driver for message queue interrupts

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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>
This commit is contained in:
Jack Steiner
2009-04-02 16:59:10 -07:00
committed by Linus Torvalds
parent ecdaf2b552
commit 6f2584f474
7 changed files with 305 additions and 118 deletions
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33
drivers/misc/sgi-gru/grukservices.h
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@@ -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 @@ extern int gru_create_message_queue(void *p, unsigned int bytes);
*
*
* 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 @@ extern int gru_create_message_queue(void *p, unsigned int bytes);
* >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 @@ extern int gru_send_message_gpa(unsigned long mq_gpa, void *mesg,
* 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 @@ extern void gru_free_message(void *mq, void *mesq);
* 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);
/*