diff options
| author | Andrew Vasquez <andrew.vasquez@qlogic.com> | 2009-02-09 04:50:12 (GMT) |
|---|---|---|
| committer | James Bottomley <James.Bottomley@HansenPartnership.com> | 2009-02-10 16:15:20 (GMT) |
| commit | 8a659571eccfde1df9bd057d67be51d1aaa0e2db (patch) | |
| tree | 4d7c637f72ccb7de153c80300713c5f595ae3f44 /drivers/scsi/qla2xxx/qla_mbx.c | |
| parent | 618a752319503a64d1b66615e8ea2a0e7edaf914 (diff) | |
| download | linux-fsl-qoriq-8a659571eccfde1df9bd057d67be51d1aaa0e2db.tar.xz | |
[SCSI] qla2xxx: Properly acknowledge IDC notification messages.
To ensure smooth operations amongst the FCoE and NIC side
components of the ISP81xx chip, the FCoE driver (qla2xxx) must
ensure the 10gb NIC driver (qlge) does not timeout waiting for
IDC (Inter-Driver Communication) acknowledgments. The
acknowledgment requirements are trivial -- a simple mirroring of
incoming mailbox registers during the AEN to a process-context
capable mailbox command.
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'drivers/scsi/qla2xxx/qla_mbx.c')
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_mbx.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/scsi/qla2xxx/qla_mbx.c b/drivers/scsi/qla2xxx/qla_mbx.c index 723cd37..4c7504c 100644 --- a/drivers/scsi/qla2xxx/qla_mbx.c +++ b/drivers/scsi/qla2xxx/qla_mbx.c @@ -3191,3 +3191,29 @@ qla25xx_init_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp) return rval; } +int +qla81xx_idc_ack(scsi_qla_host_t *vha, uint16_t *mb) +{ + int rval; + mbx_cmd_t mc; + mbx_cmd_t *mcp = &mc; + + DEBUG11(printk("%s(%ld): entered.\n", __func__, vha->host_no)); + + mcp->mb[0] = MBC_IDC_ACK; + memcpy(&mcp->mb[1], mb, QLA_IDC_ACK_REGS * sizeof(uint16_t)); + mcp->out_mb = MBX_7|MBX_6|MBX_5|MBX_4|MBX_3|MBX_2|MBX_1|MBX_0; + mcp->in_mb = MBX_0; + mcp->tov = MBX_TOV_SECONDS; + mcp->flags = 0; + rval = qla2x00_mailbox_command(vha, mcp); + + if (rval != QLA_SUCCESS) { + DEBUG2_3_11(printk("%s(%ld): failed=%x (%x).\n", __func__, + vha->host_no, rval, mcp->mb[0])); + } else { + DEBUG11(printk("%s(%ld): done.\n", __func__, vha->host_no)); + } + + return rval; +} |