From 8a659571eccfde1df9bd057d67be51d1aaa0e2db Mon Sep 17 00:00:00 2001 From: Andrew Vasquez Date: Sun, 8 Feb 2009 20:50:12 -0800 Subject: [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 Signed-off-by: James Bottomley --- drivers/scsi/qla2xxx/qla_mbx.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) (limited to 'drivers/scsi/qla2xxx/qla_mbx.c') diff --git a/drivers/scsi/qla2xxx/qla_mbx.c b/drivers/scsi/qla2xxx/qla_mbx.c index 723cd37294c..4c7504cb399 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; +} -- cgit v1.2.3