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[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 <giridhar.malavali@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Michael Hernandez 2009-12-15 21:29:44 -08:00 committed by James Bottomley
parent 44214ab474
commit 3064ff39b8
3 changed files with 36 additions and 0 deletions
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1
drivers/scsi/qla2xxx/qla_gbl.h
View File

@ -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.
*/

2
drivers/scsi/qla2xxx/qla_init.c
View File

@ -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))) {

33
drivers/scsi/qla2xxx/qla_mbx.c
View File

@ -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;
}