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[SCSI] qla2xxx: Get the link data rate explicitly during device resync.

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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;
}