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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>
This commit is contained in:
Gabriel Krisman Bertazi 2015-11-03 16:26:09 -02:00 committed by Martin K. Petersen
parent 1021b3ffad
commit 1a47af26b7
2 changed files with 62 additions and 1 deletions
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59
drivers/scsi/ipr.c
View File

@ -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)) {

4
drivers/scsi/ipr.h
View File

@ -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