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[SCSI] qla4xxx: memory wedge with peg_halt test in loop

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Signed-off-by: Swapnil Nagle <swapnil.nagle@qlogic.com>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: Ravi Anand <ravi.anand@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Swapnil Nagle 2010-12-02 22:12:15 -08:00 committed by James Bottomley
parent 61391d314e
commit a1fc26baae
1 changed files with 43 additions and 0 deletions
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43
drivers/scsi/qla4xxx/ql4_nx.c
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@ -942,12 +942,55 @@ qla4_8xxx_pinit_from_rom(struct scsi_qla_host *ha, int verbose)
/* Halt all the indiviual PEGs and other blocks of the ISP */
qla4_8xxx_rom_lock(ha);
/* mask all niu interrupts */
qla4_8xxx_wr_32(ha, QLA82XX_CRB_NIU + 0x40, 0xff);
/* disable xge rx/tx */
qla4_8xxx_wr_32(ha, QLA82XX_CRB_NIU + 0x70000, 0x00);
/* disable xg1 rx/tx */
qla4_8xxx_wr_32(ha, QLA82XX_CRB_NIU + 0x80000, 0x00);
/* halt sre */
val = qla4_8xxx_rd_32(ha, QLA82XX_CRB_SRE + 0x1000);
qla4_8xxx_wr_32(ha, QLA82XX_CRB_SRE + 0x1000, val & (~(0x1)));
/* halt epg */
qla4_8xxx_wr_32(ha, QLA82XX_CRB_EPG + 0x1300, 0x1);
/* halt timers */
qla4_8xxx_wr_32(ha, QLA82XX_CRB_TIMER + 0x0, 0x0);
qla4_8xxx_wr_32(ha, QLA82XX_CRB_TIMER + 0x8, 0x0);
qla4_8xxx_wr_32(ha, QLA82XX_CRB_TIMER + 0x10, 0x0);
qla4_8xxx_wr_32(ha, QLA82XX_CRB_TIMER + 0x18, 0x0);
qla4_8xxx_wr_32(ha, QLA82XX_CRB_TIMER + 0x100, 0x0);
/* halt pegs */
qla4_8xxx_wr_32(ha, QLA82XX_CRB_PEG_NET_0 + 0x3c, 1);
qla4_8xxx_wr_32(ha, QLA82XX_CRB_PEG_NET_1 + 0x3c, 1);
qla4_8xxx_wr_32(ha, QLA82XX_CRB_PEG_NET_2 + 0x3c, 1);
qla4_8xxx_wr_32(ha, QLA82XX_CRB_PEG_NET_3 + 0x3c, 1);
qla4_8xxx_wr_32(ha, QLA82XX_CRB_PEG_NET_4 + 0x3c, 1);
/* big hammer */
msleep(1000);
if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
/* don't reset CAM block on reset */
qla4_8xxx_wr_32(ha, QLA82XX_ROMUSB_GLB_SW_RESET, 0xfeffffff);
else
qla4_8xxx_wr_32(ha, QLA82XX_ROMUSB_GLB_SW_RESET, 0xffffffff);
/* reset ms */
val = qla4_8xxx_rd_32(ha, QLA82XX_CRB_QDR_NET + 0xe4);
val |= (1 << 1);
qla4_8xxx_wr_32(ha, QLA82XX_CRB_QDR_NET + 0xe4, val);
msleep(20);
/* unreset ms */
val = qla4_8xxx_rd_32(ha, QLA82XX_CRB_QDR_NET + 0xe4);
val &= ~(1 << 1);
qla4_8xxx_wr_32(ha, QLA82XX_CRB_QDR_NET + 0xe4, val);
msleep(20);
qla4_8xxx_rom_unlock(ha);
/* Read the signature value from the flash.