diff options
| author | Andrew Vasquez <andrew.vasquez@qlogic.com> | 2009-06-03 09:55:30 -0700 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@HansenPartnership.com> | 2009-06-08 14:47:00 -0500 |
| commit | 18e7555a38eaadb757353c4b76667e07166ad26c (patch) | |
| tree | 3b8b0f43076aff5d87c0c8800fb3c4a221af78a0 /drivers/scsi/qla2xxx/qla_init.c | |
| parent | 656e89122a737b60cebc7b8fcb669faf0e7bc905 (diff) | |
[SCSI] qla2xxx: Synchronize MPI settings after a PE Reset.
Ensure MPS remains in synchronization across all NIC/FCoE
functions after a reset.
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'drivers/scsi/qla2xxx/qla_init.c')
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_init.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c index 36cea2224b3..26202612932 100644 --- a/drivers/scsi/qla2xxx/qla_init.c +++ b/drivers/scsi/qla2xxx/qla_init.c @@ -886,6 +886,56 @@ cont_alloc: htonl(offsetof(struct qla2xxx_fw_dump, isp)); } +static int +qla81xx_mpi_sync(scsi_qla_host_t *vha) +{ +#define MPS_MASK 0xe0 + int rval; + uint16_t dc; + uint32_t dw; + struct qla_hw_data *ha = vha->hw; + + if (!IS_QLA81XX(vha->hw)) + return QLA_SUCCESS; + + rval = qla2x00_write_ram_word(vha, 0x7c00, 1); + if (rval != QLA_SUCCESS) { + DEBUG2(qla_printk(KERN_WARNING, ha, + "Sync-MPI: Unable to acquire semaphore.\n")); + goto done; + } + + pci_read_config_word(vha->hw->pdev, 0x54, &dc); + rval = qla2x00_read_ram_word(vha, 0x7a15, &dw); + if (rval != QLA_SUCCESS) { + DEBUG2(qla_printk(KERN_WARNING, ha, + "Sync-MPI: Unable to read sync.\n")); + goto done_release; + } + + dc &= MPS_MASK; + if (dc == (dw & MPS_MASK)) + goto done_release; + + dw &= ~MPS_MASK; + dw |= dc; + rval = qla2x00_write_ram_word(vha, 0x7a15, dw); + if (rval != QLA_SUCCESS) { + DEBUG2(qla_printk(KERN_WARNING, ha, + "Sync-MPI: Unable to gain sync.\n")); + } + +done_release: + rval = qla2x00_write_ram_word(vha, 0x7c00, 0); + if (rval != QLA_SUCCESS) { + DEBUG2(qla_printk(KERN_WARNING, ha, + "Sync-MPI: Unable to release semaphore.\n")); + } + +done: + return rval; +} + /** * qla2x00_setup_chip() - Load and start RISC firmware. * @ha: HA context @@ -910,6 +960,8 @@ qla2x00_setup_chip(scsi_qla_host_t *vha) spin_unlock_irqrestore(&ha->hardware_lock, flags); } + qla81xx_mpi_sync(vha); + /* Load firmware sequences */ rval = ha->isp_ops->load_risc(vha, &srisc_address); if (rval == QLA_SUCCESS) { |