From 3064ff39b8121acbd731f64d046218ebf3c2f9c0 Mon Sep 17 00:00:00 2001 From: Michael Hernandez Date: Tue, 15 Dec 2009 21:29:44 -0800 Subject: [PATCH] [SCSI] qla2xxx: Get the link data rate explicitly during device resync. When the hba port gets logged out of the fabric, or other such transitional state when the physical link is still present, the driver doesn't receive a loop up asyn event (where the link data rate currently gets set). Hence send a explicit mailbox command to get the link rate in such conditions. Signed-off-by: Giridhar Malavali Signed-off-by: James Bottomley --- drivers/scsi/qla2xxx/qla_gbl.h | 1 + drivers/scsi/qla2xxx/qla_init.c | 2 ++ drivers/scsi/qla2xxx/qla_mbx.c | 33 +++++++++++++++++++++++++++++++++ 3 files changed, 36 insertions(+) diff --git a/drivers/scsi/qla2xxx/qla_gbl.h b/drivers/scsi/qla2xxx/qla_gbl.h index 0b6801fc638..f61fb8d0133 100644 --- a/drivers/scsi/qla2xxx/qla_gbl.h +++ b/drivers/scsi/qla2xxx/qla_gbl.h @@ -324,6 +324,7 @@ qla2x00_read_ram_word(scsi_qla_host_t *, uint32_t, uint32_t *); extern int qla2x00_write_ram_word(scsi_qla_host_t *, uint32_t, uint32_t); +extern int qla2x00_get_data_rate(scsi_qla_host_t *); /* * Global Function Prototypes in qla_isr.c source file. */ diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c index 73a793539d4..0f7ea6cc02f 100644 --- a/drivers/scsi/qla2xxx/qla_init.c +++ b/drivers/scsi/qla2xxx/qla_init.c @@ -2266,6 +2266,8 @@ qla2x00_configure_loop(scsi_qla_host_t *vha) clear_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags); clear_bit(RSCN_UPDATE, &vha->dpc_flags); + qla2x00_get_data_rate(vha); + /* Determine what we need to do */ if (ha->current_topology == ISP_CFG_FL && (test_bit(LOCAL_LOOP_UPDATE, &flags))) { diff --git a/drivers/scsi/qla2xxx/qla_mbx.c b/drivers/scsi/qla2xxx/qla_mbx.c index 05d595d9a7e..e91f3d82b2f 100644 --- a/drivers/scsi/qla2xxx/qla_mbx.c +++ b/drivers/scsi/qla2xxx/qla_mbx.c @@ -3643,3 +3643,36 @@ qla2x00_write_ram_word(scsi_qla_host_t *vha, uint32_t risc_addr, uint32_t data) return rval; } + +int +qla2x00_get_data_rate(scsi_qla_host_t *vha) +{ + int rval; + mbx_cmd_t mc; + mbx_cmd_t *mcp = &mc; + struct qla_hw_data *ha = vha->hw; + + if (!IS_FWI2_CAPABLE(ha)) + return QLA_FUNCTION_FAILED; + + DEBUG11(printk(KERN_INFO "%s(%ld): entered.\n", __func__, vha->host_no)); + + mcp->mb[0] = MBC_DATA_RATE; + mcp->mb[1] = 0; + mcp->out_mb = MBX_1|MBX_0; + mcp->in_mb = MBX_2|MBX_1|MBX_0; + mcp->tov = MBX_TOV_SECONDS; + mcp->flags = 0; + rval = qla2x00_mailbox_command(vha, mcp); + if (rval != QLA_SUCCESS) { + DEBUG2_3_11(printk(KERN_INFO "%s(%ld): failed=%x mb[0]=%x.\n", + __func__, vha->host_no, rval, mcp->mb[0])); + } else { + DEBUG11(printk(KERN_INFO + "%s(%ld): done.\n", __func__, vha->host_no)); + if (mcp->mb[1] != 0x7) + ha->link_data_rate = mcp->mb[1]; + } + + return rval; +}