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| author | Gabriel Krisman Bertazi <krisman@linux.vnet.ibm.com> | 2015-11-03 16:26:09 -0200 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2015-11-09 19:32:08 -0500 |
| commit | 1a47af26b71e3267f6a5da0103cb65d00b1ff32e (patch) | |
| tree | 63a8f69f2d71d63ad7cb57912734bdc08000d2d9 /drivers | |
| parent | 1021b3ffad7682a09437cafffae32e26d0ce83e9 (diff) | |
| download | linux-1a47af26b71e3267f6a5da0103cb65d00b1ff32e.tar.gz | |
ipr: Issue Configure Cache Parameters command.
Some new adapters require a special Configure Cache Parameters command to enable the adapter write cache, so send this during the adapter initialization if the adapter requires it. Signed-off-by: Gabriel Krisman Bertazi <krisman@linux.vnet.ibm.com> Acked-by: Brian King <brking@linux.vnet.ibm.com> Reviewed-by: Wen Xiong <wenxiong@linux.vnet.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/scsi/ipr.c | 59 | ||||
| -rw-r--r-- | drivers/scsi/ipr.h | 4 |
2 files changed, 62 insertions, 1 deletions
diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c index 5efc7efa4ef5..79fd9ff0a8b3 100644 --- a/drivers/scsi/ipr.c +++ b/drivers/scsi/ipr.c @@ -7675,6 +7675,63 @@ static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd) return IPR_RC_JOB_RETURN; } +static int ipr_ioa_service_action_failed(struct ipr_cmnd *ipr_cmd) +{ + u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc); + + if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) + return IPR_RC_JOB_CONTINUE; + + return ipr_reset_cmd_failed(ipr_cmd); +} + +static void ipr_build_ioa_service_action(struct ipr_cmnd *ipr_cmd, + __be32 res_handle, u8 sa_code) +{ + struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; + + ioarcb->res_handle = res_handle; + ioarcb->cmd_pkt.cdb[0] = IPR_IOA_SERVICE_ACTION; + ioarcb->cmd_pkt.cdb[1] = sa_code; + ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD; +} + +/** + * ipr_ioafp_set_caching_parameters - Issue Set Cache parameters service + * action + * + * Return value: + * none + **/ +static int ipr_ioafp_set_caching_parameters(struct ipr_cmnd *ipr_cmd) +{ + struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb; + struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg; + struct ipr_inquiry_pageC4 *pageC4 = &ioa_cfg->vpd_cbs->pageC4_data; + + ENTER; + + ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg; + + if (pageC4->cache_cap[0] & IPR_CAP_SYNC_CACHE) { + ipr_build_ioa_service_action(ipr_cmd, + cpu_to_be32(IPR_IOA_RES_HANDLE), + IPR_IOA_SA_CHANGE_CACHE_PARAMS); + + ioarcb->cmd_pkt.cdb[2] = 0x40; + + ipr_cmd->job_step_failed = ipr_ioa_service_action_failed; + ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, + IPR_SET_SUP_DEVICE_TIMEOUT); + + LEAVE; + return IPR_RC_JOB_RETURN; + } + + LEAVE; + return IPR_RC_JOB_CONTINUE; +} + /** * ipr_ioafp_inquiry - Send an Inquiry to the adapter. * @ipr_cmd: ipr command struct @@ -7742,7 +7799,7 @@ static int ipr_ioafp_pageC4_inquiry(struct ipr_cmnd *ipr_cmd) struct ipr_inquiry_pageC4 *pageC4 = &ioa_cfg->vpd_cbs->pageC4_data; ENTER; - ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg; + ipr_cmd->job_step = ipr_ioafp_set_caching_parameters; memset(pageC4, 0, sizeof(*pageC4)); if (ipr_inquiry_page_supported(page0, 0xC4)) { diff --git a/drivers/scsi/ipr.h b/drivers/scsi/ipr.h index 7be1271e0bf6..b16bcd14ee4e 100644 --- a/drivers/scsi/ipr.h +++ b/drivers/scsi/ipr.h @@ -216,6 +216,10 @@ #define IPR_SET_ALL_SUPPORTED_DEVICES 0x80 #define IPR_IOA_SHUTDOWN 0xF7 #define IPR_WR_BUF_DOWNLOAD_AND_SAVE 0x05 +#define IPR_IOA_SERVICE_ACTION 0xD2 + +/* IOA Service Actions */ +#define IPR_IOA_SA_CHANGE_CACHE_PARAMS 0x14 /* * Timeouts |