diff options
| author | Robin Holt <holt@sgi.com> | 2009-12-15 16:47:55 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-12-16 07:20:13 -0800 |
| commit | 289750d1f1fd4a715baa2a2c6dd0cec2b8317fd7 (patch) | |
| tree | 2c525297c460a9ab98b9649eb3021e534a8e77fd /drivers/misc/sgi-gru/grukservices.h | |
| parent | fae419f2abd15ab7d1cd1413e6683a276a4e14e2 (diff) | |
X86: uv: implement a gru_read_gpa kernel function
The BIOS has decided to store a pointer to the partition reserved page in
a scratch MMR. The GRU is only able to read an MMR using a vload
instruction. The gru_read_gpa() function will implemented.
Signed-off-by: Robin Holt <holt@sgi.com>
Signed-off-by: Jack Steiner <steiner@sgi.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/misc/sgi-gru/grukservices.h')
| -rw-r--r-- | drivers/misc/sgi-gru/grukservices.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/misc/sgi-gru/grukservices.h b/drivers/misc/sgi-gru/grukservices.h index d60d34bca44..02aa94d8484 100644 --- a/drivers/misc/sgi-gru/grukservices.h +++ b/drivers/misc/sgi-gru/grukservices.h @@ -131,6 +131,20 @@ 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); + + +/* * Copy data using the GRU. Source or destination can be located in a remote * partition. * |