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| author | Andrew Vasquez <andrewv@marvell.com> | 2020-02-26 23:40:13 +0100 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2020-02-29 02:32:33 +0100 |
| commit | b0f18eee6fc1ee21c07abb55e9ccabc9ed9c09f0 (patch) | |
| tree | 58163e7f37026ff80962aee942ffeea694c453ba /drivers/scsi/qla2xxx/qla_gbl.h | |
| parent | scsi: qla2xxx: fix FW resource count values (diff) | |
| download | linux-b0f18eee6fc1ee21c07abb55e9ccabc9ed9c09f0.tar.xz linux-b0f18eee6fc1ee21c07abb55e9ccabc9ed9c09f0.zip | |
scsi: qla2xxx: Update BPM enablement semantics.
commit e4e3a2ce9556 ("scsi: qla2xxx: Add ability to autodetect SFP
type") takes a heavy handed approach to BPM (Buffer Plus Management)
enablement:
1) During hardware initialization, if an LR-capable transceiver is
recognized, the driver schedules a disruptive post-initialization
chip-reset (ISP-ABORT) to allow the BPM settings to be sent to the
firmware. This chip-reset will result in (short-term) path-loss to
all fc-rports and their attached SCSI devices.
2) LR-detection is triggered during any link-up event, resulting in a
refresh and potential chip-reset
Based on firmware-team guidance, upon LR-capable transceiver
recognition, the driver's hardware initialization code will now
re-execute firmware with the new BPM settings, then continue on with
driver initialization. To address the second issue, the driver
performs LR-capable detection upon the driver receiving a
transceiver-insertion asynchronous event from firmware. No short-term
path loss is needed with this new semantic.
Link: https://lore.kernel.org/r/20200226224022.24518-10-hmadhani@marvell.com
Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Andrew Vasquez <andrewv@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/qla2xxx/qla_gbl.h')
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_gbl.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/scsi/qla2xxx/qla_gbl.h b/drivers/scsi/qla2xxx/qla_gbl.h index 33ea79181dd7..1b93f5b4d77d 100644 --- a/drivers/scsi/qla2xxx/qla_gbl.h +++ b/drivers/scsi/qla2xxx/qla_gbl.h @@ -109,7 +109,7 @@ int qla24xx_async_notify_ack(scsi_qla_host_t *, fc_port_t *, int qla24xx_post_newsess_work(struct scsi_qla_host *, port_id_t *, u8 *, u8*, void *, u8); int qla24xx_fcport_handle_login(struct scsi_qla_host *, fc_port_t *); -int qla24xx_detect_sfp(scsi_qla_host_t *vha); +int qla24xx_detect_sfp(scsi_qla_host_t *); int qla24xx_post_gpdb_work(struct scsi_qla_host *, fc_port_t *, u8); extern void qla28xx_get_aux_images(struct scsi_qla_host *, |