diff options
| author | sreekanth.reddy@lsi.com <sreekanth.reddy@lsi.com> | 2012-07-17 15:56:07 +0530 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2012-08-24 13:10:25 +0400 |
| commit | 6c265660c26267754a02063642ae042d469b4ef9 (patch) | |
| tree | a6550ee176bf29c9c3f88f48de0c73bbebc56809 /drivers/scsi/mpt2sas/mpt2sas_config.c | |
| parent | e17eee45102bfd28f357efa119c4ecaf7a17c155 (diff) | |
[SCSI] mpt2sas: Provide sysfs attribute to report Backup Rail Monitor Status
A new sysfs shost attribute called "BMR_status" is implemented to
report Backup Rail Monitor status.
This attribute is located in the path
/sys/class/scsi_host/host#/BMR_status
when reading this adapter attribute, then driver will output the state
of GPIO[24]. It returns "0" if BMR is healthy and it returns "1" for failure.
if it returns an empty string then it means that there was an error while
obtaining the BMR status. Then check dmesg for what error has occured.
Signed-off-by: Sreekanth Reddy <sreekanth.reddy@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi/mpt2sas/mpt2sas_config.c')
| -rw-r--r-- | drivers/scsi/mpt2sas/mpt2sas_config.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/drivers/scsi/mpt2sas/mpt2sas_config.c b/drivers/scsi/mpt2sas/mpt2sas_config.c index 323309b22c8..863778071a9 100644 --- a/drivers/scsi/mpt2sas/mpt2sas_config.c +++ b/drivers/scsi/mpt2sas/mpt2sas_config.c @@ -683,6 +683,42 @@ mpt2sas_config_set_iounit_pg1(struct MPT2SAS_ADAPTER *ioc, } /** + * mpt2sas_config_get_iounit_pg3 - obtain iounit page 3 + * @ioc: per adapter object + * @mpi_reply: reply mf payload returned from firmware + * @config_page: contents of the config page + * @sz: size of buffer passed in config_page + * Context: sleep. + * + * Returns 0 for success, non-zero for failure. + */ +int +mpt2sas_config_get_iounit_pg3(struct MPT2SAS_ADAPTER *ioc, + Mpi2ConfigReply_t *mpi_reply, Mpi2IOUnitPage3_t *config_page, u16 sz) +{ + Mpi2ConfigRequest_t mpi_request; + int r; + + memset(&mpi_request, 0, sizeof(Mpi2ConfigRequest_t)); + mpi_request.Function = MPI2_FUNCTION_CONFIG; + mpi_request.Action = MPI2_CONFIG_ACTION_PAGE_HEADER; + mpi_request.Header.PageType = MPI2_CONFIG_PAGETYPE_IO_UNIT; + mpi_request.Header.PageNumber = 3; + mpi_request.Header.PageVersion = MPI2_IOUNITPAGE3_PAGEVERSION; + mpt2sas_base_build_zero_len_sge(ioc, &mpi_request.PageBufferSGE); + r = _config_request(ioc, &mpi_request, mpi_reply, + MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT, NULL, 0); + if (r) + goto out; + + mpi_request.Action = MPI2_CONFIG_ACTION_PAGE_READ_CURRENT; + r = _config_request(ioc, &mpi_request, mpi_reply, + MPT2_CONFIG_PAGE_DEFAULT_TIMEOUT, config_page, sz); + out: + return r; +} + +/** * mpt2sas_config_get_ioc_pg8 - obtain ioc page 8 * @ioc: per adapter object * @mpi_reply: reply mf payload returned from firmware |