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| author |   Jack Steiner <steiner@sgi.com> | 2009-06-17 16:28:25 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2009-06-18 13:04:00 -0700 |
| commit | 9120dec47f150636d85b3dba03318ccecd181c79 (patch) | |
| tree | 8819f1aa2b71992c8a4d80e974e7236c0d762fdb /drivers/misc/sgi-gru/grukservices.h | |
| parent | gru: support instruction completion interrupts (diff) | |
| download | linux-dev-9120dec47f150636d85b3dba03318ccecd181c79.tar.xz linux-dev-9120dec47f150636d85b3dba03318ccecd181c79.zip | |
gru: support for asynchronous gru instructions
Add support for asynchronous GRU instructions. Currently, asynchronous
instructions are supported only for GRU instructions issued by the kernel.
[akpm@linux-foundation.org: build fix]
Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to '')
| -rw-r--r-- | drivers/misc/sgi-gru/grukservices.h | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/drivers/misc/sgi-gru/grukservices.h b/drivers/misc/sgi-gru/grukservices.h index 747ed315d56f..d60d34bca44d 100644 --- a/drivers/misc/sgi-gru/grukservices.h +++ b/drivers/misc/sgi-gru/grukservices.h @@ -146,4 +146,55 @@ extern void *gru_get_next_message(struct gru_message_queue_desc *mqd); 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_ */ |