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authorjoel <joel@FreeBSD.org>2012-06-02 11:03:14 +0000
committerjoel <joel@FreeBSD.org>2012-06-02 11:03:14 +0000
commitf2d65ab354e575041479310ee50839819a74a270 (patch)
tree7fa58c1578b30b5b29f98b24f946a15bd7a01581 /share/man/man4/ahci.4
parent65208febe43b80a3eb14f11ac5f30f9a84ece98f (diff)
downloadFreeBSD-src-f2d65ab354e575041479310ee50839819a74a270.zip
FreeBSD-src-f2d65ab354e575041479310ee50839819a74a270.tar.gz
mdoc: minor Bl improvements.
Diffstat (limited to 'share/man/man4/ahci.4')
-rw-r--r--share/man/man4/ahci.47
1 files changed, 5 insertions, 2 deletions
diff --git a/share/man/man4/ahci.4 b/share/man/man4/ahci.4
index 75426e7..602fc3e 100644
--- a/share/man/man4/ahci.4
+++ b/share/man/man4/ahci.4
@@ -52,7 +52,8 @@ The following tunables are settable from the
.Bl -ohang
.It Va hint.ahci. Ns Ar X Ns Va .msi
controls Message Signaled Interrupts (MSI) usage by the specified controller.
-.Bl -tag -compact
+.Pp
+.Bl -tag -width 4n -offset indent -compact
.It 0
MSI disabled;
.It 1
@@ -72,7 +73,8 @@ controls SATA interface Power Management for the specified channel,
allowing some power to be saved at the cost of additional command
latency.
Possible values:
-.Bl -tag -compact
+.Pp
+.Bl -tag -width 4n -offset indent -compact
.It 0
interface Power Management is disabled (default);
.It 1
@@ -86,6 +88,7 @@ driver initiates PARTIAL PM state transition 1ms after port becomes idle;
.It 5
driver initiates SLUMBER PM state transition 125ms after port becomes idle.
.El
+.Pp
Some controllers, such as ICH8, do not implement modes 2 and 3 with NCQ used.
Because of artificial entering latency, performance degradation in modes
4 and 5 is much smaller then in modes 2 and 3.
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