Lines Matching +full:power +full:- +full:on +full:- +full:time +full:- +full:ms

1 .\" Copyright (c) 2009-2013 Alexander Motin <mav@FreeBSD.org>
20 .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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42 module at boot time, place the following line in
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64 Non-zero value enables CCC and defines maximum time (in ms), request can wait
65 for interrupt, if there are some more requests present on controller queue.
66 CCC reduces number of context switches on systems with many parallel requests,
67 but it can decrease disk performance on some workloads due to additional
72 Default value depends on number of MSI interrupts supported and number of
76 device on top of SGPIO or other interface.
77 Default value depends on controller capabilities.
79 controls SATA interface Power Management for the specified channel,
80 allowing some power to be saved at the cost of additional command
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86 interface Power Management is disabled (default);
90 host initiates PARTIAL PM state transition every time port becomes idle;
92 host initiates SLUMBER PM state transition every time port becomes idle.
94 driver initiates PARTIAL PM state transition 1ms after port becomes idle;
96 driver initiates SLUMBER PM state transition 125ms after port becomes idle.
103 Note that interface Power Management complicates device presence detection.
104 A manual bus reset/rescan may be needed after device hot-plug, unless hardware
110 setting to nonzero value forces driver attach to some known AHCI-capable
119 ports of AHCI-compatible controllers.
122 Most of the bus-management details are handled by the SATA-specific
133 Port Multipliers (including FIS-based switching, when supported),
135 Native Command Queuing, SATA interface Power Management, device hot-plug
139 When supported by hardware, it allows to control per-port activity, locate
156 it supports AHCI part of legacy-PATA + AHCI-SATA combined controllers,
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190 Set to 1 to disable the phy for the drive on channel X.