diff options
| author | Kashyap, Desai <kashyap.desai@lsi.com> | 2010-06-17 13:43:17 +0530 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@suse.de> | 2010-07-27 12:02:14 -0500 |
| commit | 570c67ac443dab5c46e5744e950f0539724cb65d (patch) | |
| tree | dad14200b33f9c0d24c43886b7a88b2a7bf0f2eb /drivers/scsi/mpt2sas/mpt2sas_base.h | |
| parent | 203d65b16cfef448dbfb79f66b672be4511fc6a9 (diff) | |
[SCSI] mpt2sas: Added sysfs support for trace buffer
Added support so the diag ring buffer can be pulled via sysfs
Added three new shost attributes: host_trace_buffer,
host_trace_buffer_enable, and host_trace_buffer_size. The
host_trace_buffer_enable attribute is used to either post or release
the trace buffers. The host_trace_buffer_size attribute contains
the size of the trace buffer. The host_trace_buffer atttribute contains
a maximum 4KB window of the buffer. In order to read the entire host buffer,
you will need to write the offset to host_trace_buffer prior to reading
it. release the host buffer, then write the entire host buffer contents to
a file.
In addition to this enhancement, we moved the automatic posting of host buffers
at driver load time to be called prior to port_enable, instead of after.
That way discovery is available in the host buffer.
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/scsi/mpt2sas/mpt2sas_base.h')
| -rw-r--r-- | drivers/scsi/mpt2sas/mpt2sas_base.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/scsi/mpt2sas/mpt2sas_base.h b/drivers/scsi/mpt2sas/mpt2sas_base.h index a4a73152922..ffe93984e56 100644 --- a/drivers/scsi/mpt2sas/mpt2sas_base.h +++ b/drivers/scsi/mpt2sas/mpt2sas_base.h @@ -750,6 +750,8 @@ struct MPT2SAS_ADAPTER { Mpi2ManufacturingPage10_t manu_pg10; u32 product_specific[MPI2_DIAG_BUF_TYPE_COUNT][23]; u32 diagnostic_flags[MPI2_DIAG_BUF_TYPE_COUNT]; + u32 ring_buffer_offset; + u32 ring_buffer_sz; }; typedef u8 (*MPT_CALLBACK)(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 msix_index, |