Some style and language improvements.
Submitted by: ru
This commit is contained in:
parent
1e818404a3
commit
550cc032b7
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=204565
@ -48,9 +48,10 @@ module at boot time, place the following line in
|
||||
ahci_load="YES"
|
||||
.Ed
|
||||
.Pp
|
||||
The following tunables are settable from the loader:
|
||||
The following tunables are settable from the
|
||||
.Xr loader 8 :
|
||||
.Bl -ohang
|
||||
.It Va hint.ahci.X.msi
|
||||
.It Va hint.ahci. Ns Ar X Ns Va .msi
|
||||
controls Message Signaled Interrupts (MSI) usage by the specified controller
|
||||
.Bl -tag -compact
|
||||
.It 0
|
||||
@ -60,15 +61,15 @@ single MSI vector used, if supported (default);
|
||||
.It 2
|
||||
multiple MSI vectors used, if supported;
|
||||
.El
|
||||
.It Va hint.ahci.X.ccc
|
||||
.It Va hint.ahci. Ns Ar X Ns Va .ccc
|
||||
controls Command Completion Coalescing (CCC) usage by the specified controller.
|
||||
Non-zero value enables CCC and defines maximum time (in ms), request can wait
|
||||
for interrupt, if there are some more requests present on controller queue.
|
||||
CCC reduces number of context switches on systems with many parallel requests,
|
||||
but it can decrease disk performance on some workloads due to additional
|
||||
command latency.
|
||||
.It Va hint.ahcich.X.pm_level
|
||||
controls SATA interface Power Management for specified channel,
|
||||
.It Va hint.ahcich. Ns Ar X Ns Va .pm_level
|
||||
controls SATA interface Power Management for the specified channel,
|
||||
allowing some power to be saved at the cost of additional command
|
||||
latency.
|
||||
Possible values:
|
||||
@ -92,18 +93,20 @@ Because of artificial entering latency, performance degradation in modes
|
||||
.Pp
|
||||
Note that interface Power Management is not compatible with
|
||||
device presence detection.
|
||||
You will have to reset bus manually on device hot-plug.
|
||||
.It Va hint.ahcich.X.sata_rev
|
||||
A manual bus reset is needed on device hot-plug.
|
||||
.It Va hint.ahcich. Ns Ar X Ns Va .sata_rev
|
||||
setting to nonzero value limits maximum SATA revision (speed).
|
||||
Values 1, 2 and 3 are respectively 1.5, 3 and 6Gbps.
|
||||
.El
|
||||
.Sh DESCRIPTION
|
||||
This driver provides the CAM subsystem with native access to the
|
||||
This driver provides the
|
||||
.Xr CAM 4
|
||||
subsystem with native access to the
|
||||
.Tn SATA
|
||||
ports of AHCI-compatible controllers.
|
||||
Each SATA port found is represented to CAM as a separate bus with one
|
||||
target, or, if HBA supports Port Multipliers, 16 targets.
|
||||
Most of the bus-management details are handled by the SATA-specific
|
||||
Most of the bus-management details are handled by the SATA-specific
|
||||
transport of CAM.
|
||||
Connected ATA disks are handled by the ATA protocol disk peripheral driver
|
||||
.Xr ada 4 .
|
||||
@ -121,7 +124,8 @@ and Message Signaled Interrupts.
|
||||
.Pp
|
||||
AHCI hardware is also supported by ataahci driver from
|
||||
.Xr ata 4
|
||||
subsystem. If both drivers are loaded at the same time, this one will be
|
||||
subsystem.
|
||||
If both drivers are loaded at the same time, this one will be
|
||||
given precedence as the more functional of the two.
|
||||
.Sh HARDWARE
|
||||
The
|
||||
@ -134,11 +138,11 @@ it supports AHCI part of legacy-PATA + AHCI-SATA combined controllers,
|
||||
such as JMicron JMB36x and Marvell 88SX61xx.
|
||||
.Sh SEE ALSO
|
||||
.Xr ada 4 ,
|
||||
.Xr ata 4 ,
|
||||
.Xr cd 4 ,
|
||||
.Xr da 4 ,
|
||||
.Xr sa 4 ,
|
||||
.Xr scsi 4 ,
|
||||
.Xr ata 4
|
||||
.Xr scsi 4
|
||||
.Sh HISTORY
|
||||
The
|
||||
.Nm
|
||||
|
@ -48,12 +48,13 @@ module at boot time, place the following line in
|
||||
siis_load="YES"
|
||||
.Ed
|
||||
.Pp
|
||||
The following tunables are settable from the loader:
|
||||
The following tunables are settable from the
|
||||
.Xr loader 8 :
|
||||
.Bl -ohang
|
||||
.It Va hint.siis.X.msi
|
||||
.It Va hint.siis. Ns Ar X Ns Va .msi
|
||||
controls Message Signaled Interrupts (MSI) usage by the specified controller.
|
||||
.It Va hint.siisch.X.pm_level
|
||||
controls SATA interface Power Management for specified channel,
|
||||
.It Va hint.siisch. Ns Ar X Ns Va .pm_level
|
||||
controls SATA interface Power Management for the specified channel,
|
||||
allowing some power to be saved at the cost of additional command
|
||||
latency.
|
||||
Possible values:
|
||||
@ -65,13 +66,15 @@ device is allowed to initiate PM state change, host is passive.
|
||||
.El
|
||||
Note that interface Power Management is not compatible with
|
||||
device presence detection.
|
||||
You will have to reset bus manually on device hot-plug.
|
||||
.It Va hint.siisch.X.sata_rev
|
||||
A manual bus reset is needed on device hot-plug.
|
||||
.It Va hint.siisch. Ns Ar X Ns Va .sata_rev
|
||||
setting to nonzero value limits maximum SATA revision (speed).
|
||||
Values 1, 2 and 3 are respectively 1.5, 3 and 6Gbps.
|
||||
.El
|
||||
.Sh DESCRIPTION
|
||||
This driver provides the CAM subsystem native access to the
|
||||
This driver provides the
|
||||
.Xr CAM 4
|
||||
subsystem with native access to the
|
||||
.Tn SATA
|
||||
ports of controller.
|
||||
Each SATA port is represented to CAM as a separate bus with 16 targets.
|
||||
@ -90,14 +93,15 @@ Port Multipliers (including FIS-based switching), hardware command queues
|
||||
(31 command per port), Native Command Queuing, SATA interface Power Management,
|
||||
device hot-plug and Message Signaled Interrupts.
|
||||
.Pp
|
||||
Same hardware is also supported by atasiliconimage driver from
|
||||
Same hardware is also supported by the atasiliconimage driver from
|
||||
.Xr ata 4
|
||||
subsystem. If both drivers are loaded at the same time, this one will be
|
||||
subsystem.
|
||||
If both drivers are loaded at the same time, this one will be
|
||||
given precedence as the more functional of the two.
|
||||
.Sh HARDWARE
|
||||
The
|
||||
.Nm
|
||||
driver supports following controllers:
|
||||
driver supports the following controllers:
|
||||
.Bl -bullet -compact
|
||||
.It
|
||||
SiI3124
|
||||
@ -108,11 +112,11 @@ SiI3531
|
||||
.El
|
||||
.Sh SEE ALSO
|
||||
.Xr ada 4 ,
|
||||
.Xr ata 4 ,
|
||||
.Xr cd 4 ,
|
||||
.Xr da 4 ,
|
||||
.Xr sa 4 ,
|
||||
.Xr scsi 4 ,
|
||||
.Xr ata 4
|
||||
.Xr scsi 4
|
||||
.Sh HISTORY
|
||||
The
|
||||
.Nm
|
||||
|
Loading…
Reference in New Issue
Block a user