| acpi.4 (130113) | acpi.4 (130582) |
|---|---|
| 1.\" 2.\" Copyright (c) 2001 Michael Smith 3.\" All rights reserved. 4.\" 5.\" Redistribution and use in source and binary forms, with or without 6.\" modification, are permitted provided that the following conditions 7.\" are met: 8.\" 1. Redistributions of source code must retain the above copyright --- 9 unchanged lines hidden (view full) --- 18.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24.\" SUCH DAMAGE. 25.\" | 1.\" 2.\" Copyright (c) 2001 Michael Smith 3.\" All rights reserved. 4.\" 5.\" Redistribution and use in source and binary forms, with or without 6.\" modification, are permitted provided that the following conditions 7.\" are met: 8.\" 1. Redistributions of source code must retain the above copyright --- 9 unchanged lines hidden (view full) --- 18.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24.\" SUCH DAMAGE. 25.\" |
| 26.\" $FreeBSD: head/share/man/man4/acpi.4 130113 2004-06-05 07:02:18Z njl $ | 26.\" $FreeBSD: head/share/man/man4/acpi.4 130582 2004-06-16 08:33:57Z ru $ |
| 27.\" 28.Dd June 4, 2004 29.Dt ACPI 4 30.Os 31.Sh NAME 32.Nm acpi 33.Nd Advanced Configuration and Power Management support 34.Sh SYNOPSIS --- 210 unchanged lines hidden (view full) --- 245Attaches standard ACPI sub-drivers and devices enumerated in the 246ACPI namespace. 247Disabling this has a similar effect to disabling 248.Dq Li bus , 249except that the 250ACPI namespace will still be scanned. 251.It Li button 252.Pq Vt device | 27.\" 28.Dd June 4, 2004 29.Dt ACPI 4 30.Os 31.Sh NAME 32.Nm acpi 33.Nd Advanced Configuration and Power Management support 34.Sh SYNOPSIS --- 210 unchanged lines hidden (view full) --- 245Attaches standard ACPI sub-drivers and devices enumerated in the 246ACPI namespace. 247Disabling this has a similar effect to disabling 248.Dq Li bus , 249except that the 250ACPI namespace will still be scanned. 251.It Li button 252.Pq Vt device |
| 253Supports ACPI button devices (typically power and sleep buttons.) | 253Supports ACPI button devices (typically power and sleep buttons). |
| 254.It Li cmbat 255.Pq Vt device 256Control-method batteries device. 257.It Li cpu 258.Pq Vt device 259Supports CPU power-saving and speed-setting functions. 260.It Li ec 261.Pq Vt device --- 4 unchanged lines hidden (view full) --- 266Supports an ISA bus bridge defined in the ACPI namespace, 267typically as a child of a PCI bus. 268.It Li lid 269.Pq Vt device 270Supports an ACPI laptop lid switch, which typically puts a 271system to sleep. 272.It Li quirks 273.Pq Vt feature | 254.It Li cmbat 255.Pq Vt device 256Control-method batteries device. 257.It Li cpu 258.Pq Vt device 259Supports CPU power-saving and speed-setting functions. 260.It Li ec 261.Pq Vt device --- 4 unchanged lines hidden (view full) --- 266Supports an ISA bus bridge defined in the ACPI namespace, 267typically as a child of a PCI bus. 268.It Li lid 269.Pq Vt device 270Supports an ACPI laptop lid switch, which typically puts a 271system to sleep. 272.It Li quirks 273.Pq Vt feature |
| 274Don't honor quirks. | 274Do not honor quirks. |
| 275Quirks automatically disable ACPI functionality based on the XSDT table's 276OEM vendor name and revision date. 277.It Li pci 278.Pq Vt device 279Supports Host to PCI bridges. 280.It Li pci_link 281.Pq Vt feature 282Performs PCI interrupt routing. --- 86 unchanged lines hidden (view full) --- 369A scheduling algorithm will select states between C1 and this setting 370as system load dictates. 371To enable ACPI CPU idling control, 372.Va machdep.cpu_idle_hlt 373must be set to 1. 374.It Va hw.acpi.cpu.cx_supported 375List of supported CPU idle states and their transition latency 376in microseconds. | 275Quirks automatically disable ACPI functionality based on the XSDT table's 276OEM vendor name and revision date. 277.It Li pci 278.Pq Vt device 279Supports Host to PCI bridges. 280.It Li pci_link 281.Pq Vt feature 282Performs PCI interrupt routing. --- 86 unchanged lines hidden (view full) --- 369A scheduling algorithm will select states between C1 and this setting 370as system load dictates. 371To enable ACPI CPU idling control, 372.Va machdep.cpu_idle_hlt 373must be set to 1. 374.It Va hw.acpi.cpu.cx_supported 375List of supported CPU idle states and their transition latency 376in microseconds. |
| 377Each state has a type (e.g., C2.) | 377Each state has a type (e.g., C2). |
| 378C1 is equivalent to the ia32 HLT instruction, C2 provides a deeper 379sleep with the same semantics, and C3 provides the deepest sleep 380but additionally requires bus mastering to be disabled. 381States greater than C3 provide even more power savings with the same 382semantics as the C3 state. 383Deeper sleeps provide more power savings but increased transition 384latency when an interrupt occurs. 385.El --- 45 unchanged lines hidden --- | 378C1 is equivalent to the ia32 HLT instruction, C2 provides a deeper 379sleep with the same semantics, and C3 provides the deepest sleep 380but additionally requires bus mastering to be disabled. 381States greater than C3 provide even more power savings with the same 382semantics as the C3 state. 383Deeper sleeps provide more power savings but increased transition 384latency when an interrupt occurs. 385.El --- 45 unchanged lines hidden --- |