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diff --git a/static/freebsd/man4/apic.4 3.html b/static/freebsd/man4/apic.4 3.html new file mode 100644 index 00000000..25426ae0 --- /dev/null +++ b/static/freebsd/man4/apic.4 3.html @@ -0,0 +1,64 @@ +<table class="head"> + <tr> + <td class="head-ltitle">APIC(4)</td> + <td class="head-vol">Device Drivers Manual</td> + <td class="head-rtitle">APIC(4)</td> + </tr> +</table> +<div class="manual-text"> +<section class="Sh"> +<h1 class="Sh" id="NAME"><a class="permalink" href="#NAME">NAME</a></h1> +<p class="Pp"><code class="Nm">apic</code> — <span class="Nd">Advanced + Programmable Interrupt Controller (APIC) driver</span></p> +</section> +<section class="Sh"> +<h1 class="Sh" id="SYNOPSIS"><a class="permalink" href="#SYNOPSIS">SYNOPSIS</a></h1> +<p class="Pp">This driver is a mandatory part of amd64 kernel. To compile this + driver into i386 kernel, place the following line in your kernel + configuration file:</p> +<div class="Bd Pp Bd-indent"><code class="Cd">device apic</code></div> +<p class="Pp">The following tunables are settable from the + <a class="Xr">loader(8)</a>:</p> +<dl class="Bl-ohang"> + <dt id="hint.apic."><var class="Va">hint.apic.</var><var class="Ar">X</var><var class="Va">.clock</var></dt> + <dd>controls event timers functionality support. Setting to 0, disables it. + Default value is 1.</dd> + <dt id="hint.apic.~2"><var class="Va">hint.apic.</var><var class="Ar">X</var><var class="Va">.disabled</var></dt> + <dd>Set this to 1 to disable APIC support, falling back to the legacy + PIC.</dd> +</dl> +</section> +<section class="Sh"> +<h1 class="Sh" id="DESCRIPTION"><a class="permalink" href="#DESCRIPTION">DESCRIPTION</a></h1> +<p class="Pp">There are two components in the Intel APIC system, the local APIC + (LAPIC) and the I/O APIC. There is one local APIC in each CPU in the system. + There is typically one I/O APIC for each peripheral bus in the system.</p> +<p class="Pp">Local APICs manage all external interrupts for a specific + processor. In addition, they are able to accept and generate inter-processor + interrupts (IPIs).</p> +<p class="Pp">I/O APICs contain a redirection table, which is used to route the + interrupts they receive from peripheral buses to one or more local + APICs.</p> +<p class="Pp">Each local APIC includes one 32-bit programmable timer. This + driver uses them to supply kernel with one event timer named + "LAPIC". Event timer provided by the driver supports both one-shot + and periodic modes. Because of local APIC nature it is per-CPU. The timer + frequency is not reported by the platform and so automatically measured by + the driver on the first use. Depending on CPU model this timer may stop in + C3 and deeper CPU sleep states. Driver automatically adjusts event timer + priority and reports it to prevent entering dangerous sleep states when it + is used.</p> +</section> +<section class="Sh"> +<h1 class="Sh" id="SEE_ALSO"><a class="permalink" href="#SEE_ALSO">SEE + ALSO</a></h1> +<p class="Pp"><a class="Xr">atrtc(4)</a>, <a class="Xr">attimer(4)</a>, + <a class="Xr">eventtimers(4)</a>, <a class="Xr">hpet(4)</a></p> +</section> +</div> +<table class="foot"> + <tr> + <td class="foot-date">June 19, 2020</td> + <td class="foot-os">FreeBSD 15.0</td> + </tr> +</table> |