diff options
author | brucec <brucec@FreeBSD.org> | 2010-10-24 16:31:57 +0000 |
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committer | brucec <brucec@FreeBSD.org> | 2010-10-24 16:31:57 +0000 |
commit | 41dcd4566c627593cdaa04a32255183275a4ea8a (patch) | |
tree | 4019b8189051d088b2d67a8077bdfb792575305d /sys/cam/ata | |
parent | d5b2b0a30ff2f9f2c524005c77d18d36f4c37565 (diff) | |
download | FreeBSD-src-41dcd4566c627593cdaa04a32255183275a4ea8a.zip FreeBSD-src-41dcd4566c627593cdaa04a32255183275a4ea8a.tar.gz |
Mostly revert r203420, and add similar functionality into ada(4) since the
existing code caused problems with some SCSI controllers.
A new sysctl kern.cam.ada.spindown_shutdown has been added that controls
whether or not to spin-down disks when shutting down.
Spinning down the disks unloads/parks the heads - this is
much better than removing power when the disk is still
spinning because otherwise an Emergency Unload occurs which may cause damage
to the actuator.
PR: kern/140752
Submitted by: olli
Reviewed by: arundel
Discussed with: mav
MFC after: 2 weeks
Diffstat (limited to 'sys/cam/ata')
-rw-r--r-- | sys/cam/ata/ata_da.c | 64 |
1 files changed, 63 insertions, 1 deletions
diff --git a/sys/cam/ata/ata_da.c b/sys/cam/ata/ata_da.c index 8a27931..44d2fa6 100644 --- a/sys/cam/ata/ata_da.c +++ b/sys/cam/ata/ata_da.c @@ -42,6 +42,7 @@ __FBSDID("$FreeBSD$"); #include <sys/eventhandler.h> #include <sys/malloc.h> #include <sys/cons.h> +#include <sys/reboot.h> #include <geom/geom_disk.h> #endif /* _KERNEL */ @@ -79,7 +80,8 @@ typedef enum { ADA_FLAG_CAN_TRIM = 0x080, ADA_FLAG_OPEN = 0x100, ADA_FLAG_SCTX_INIT = 0x200, - ADA_FLAG_CAN_CFA = 0x400 + ADA_FLAG_CAN_CFA = 0x400, + ADA_FLAG_CAN_POWERMGT = 0x800 } ada_flags; typedef enum { @@ -180,6 +182,10 @@ static void adashutdown(void *arg, int howto); #define ADA_DEFAULT_SEND_ORDERED 1 #endif +#ifndef ADA_DEFAULT_SPINDOWN_SHUTDOWN +#define ADA_DEFAULT_SPINDOWN_SHUTDOWN 1 +#endif + /* * Most platforms map firmware geometry to actual, but some don't. If * not overridden, default to nothing. @@ -191,6 +197,7 @@ static void adashutdown(void *arg, int howto); static int ada_retry_count = ADA_DEFAULT_RETRY; static int ada_default_timeout = ADA_DEFAULT_TIMEOUT; static int ada_send_ordered = ADA_DEFAULT_SEND_ORDERED; +static int ada_spindown_shutdown = ADA_DEFAULT_SPINDOWN_SHUTDOWN; SYSCTL_NODE(_kern_cam, OID_AUTO, ada, CTLFLAG_RD, 0, "CAM Direct Access Disk driver"); @@ -203,6 +210,9 @@ TUNABLE_INT("kern.cam.ada.default_timeout", &ada_default_timeout); SYSCTL_INT(_kern_cam_ada, OID_AUTO, ada_send_ordered, CTLFLAG_RW, &ada_send_ordered, 0, "Send Ordered Tags"); TUNABLE_INT("kern.cam.ada.ada_send_ordered", &ada_send_ordered); +SYSCTL_INT(_kern_cam_ada, OID_AUTO, spindown_shutdown, CTLFLAG_RW, + &ada_spindown_shutdown, 0, "Spin down upon shutdown"); +TUNABLE_INT("kern.cam.ada.spindown_shutdown", &ada_spindown_shutdown); /* * ADA_ORDEREDTAG_INTERVAL determines how often, relative @@ -665,6 +675,8 @@ adaregister(struct cam_periph *periph, void *arg) softc->flags |= ADA_FLAG_CAN_48BIT; if (cgd->ident_data.support.command2 & ATA_SUPPORT_FLUSHCACHE) softc->flags |= ADA_FLAG_CAN_FLUSHCACHE; + if (cgd->ident_data.support.command1 & ATA_SUPPORT_POWERMGT) + softc->flags |= ADA_FLAG_CAN_POWERMGT; if (cgd->ident_data.satacapabilities & ATA_SUPPORT_NCQ && cgd->inq_flags & SID_CmdQue) softc->flags |= ADA_FLAG_CAN_NCQ; @@ -1227,6 +1239,56 @@ adashutdown(void * arg, int howto) /*getcount_only*/0); cam_periph_unlock(periph); } + + if (ada_spindown_shutdown == 0 || + (howto & (RB_HALT | RB_POWEROFF)) == 0) + return; + + TAILQ_FOREACH(periph, &adadriver.units, unit_links) { + union ccb ccb; + + /* If we paniced with lock held - not recurse here. */ + if (cam_periph_owned(periph)) + continue; + cam_periph_lock(periph); + softc = (struct ada_softc *)periph->softc; + /* + * We only spin-down the drive if it is capable of it.. + */ + if ((softc->flags & ADA_FLAG_CAN_POWERMGT) == 0) { + cam_periph_unlock(periph); + continue; + } + + if (bootverbose) + xpt_print(periph->path, "spin-down\n"); + + xpt_setup_ccb(&ccb.ccb_h, periph->path, CAM_PRIORITY_NORMAL); + + ccb.ccb_h.ccb_state = ADA_CCB_DUMP; + cam_fill_ataio(&ccb.ataio, + 1, + adadone, + CAM_DIR_NONE, + 0, + NULL, + 0, + ada_default_timeout*1000); + + ata_28bit_cmd(&ccb.ataio, ATA_STANDBY_IMMEDIATE, 0, 0, 0); + xpt_polled_action(&ccb); + + if ((ccb.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) + xpt_print(periph->path, "Spin-down disk failed\n"); + + if ((ccb.ccb_h.status & CAM_DEV_QFRZN) != 0) + cam_release_devq(ccb.ccb_h.path, + /*relsim_flags*/0, + /*reduction*/0, + /*timeout*/0, + /*getcount_only*/0); + cam_periph_unlock(periph); + } } #endif /* _KERNEL */ |