diff options
Diffstat (limited to 'drivers/misc/sgi-gru/grukservices.h')
| -rw-r--r-- | drivers/misc/sgi-gru/grukservices.h | 98 |
1 files changed, 89 insertions, 9 deletions
diff --git a/drivers/misc/sgi-gru/grukservices.h b/drivers/misc/sgi-gru/grukservices.h index eb17e0a3ac6..02aa94d8484 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 @@ 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 +121,27 @@ 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); + + +/* + * Read a GRU global GPA. Source can be located in a remote partition. + * + * Input: + * value memory address where MMR value is returned + * gpa source numalink physical address of GPA + * + * Output: + * 0 OK + * >0 error + */ +int gru_read_gpa(unsigned long *value, unsigned long gpa); /* @@ -131,4 +160,55 @@ extern void *gru_get_next_message(void *mq); extern int gru_copy_gpa(unsigned long dest_gpa, unsigned long src_gpa, unsigned int bytes); +/* + * Reserve GRU resources to be used asynchronously. + * + * input: + * blade_id - blade on which resources should be reserved + * cbrs - number of CBRs + * dsr_bytes - number of DSR bytes needed + * cmp - completion structure for waiting for + * async completions + * output: + * handle to identify resource + * (0 = no resources) + */ +extern unsigned long gru_reserve_async_resources(int blade_id, int cbrs, int dsr_bytes, + struct completion *cmp); + +/* + * Release async resources previously reserved. + * + * input: + * han - handle to identify resources + */ +extern void gru_release_async_resources(unsigned long han); + +/* + * Wait for async GRU instructions to complete. + * + * input: + * han - handle to identify resources + */ +extern void gru_wait_async_cbr(unsigned long han); + +/* + * Lock previous reserved async GRU resources + * + * input: + * han - handle to identify resources + * output: + * cb - pointer to first CBR + * dsr - pointer to first DSR + */ +extern void gru_lock_async_resource(unsigned long han, void **cb, void **dsr); + +/* + * Unlock previous reserved async GRU resources + * + * input: + * han - handle to identify resources + */ +extern void gru_unlock_async_resource(unsigned long han); + #endif /* __GRU_KSERVICES_H_ */ |