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| author | Jacob McDonnell <jacob@jacobmcdonnell.com> | 2026-04-25 19:55:15 -0400 |
|---|---|---|
| committer | Jacob McDonnell <jacob@jacobmcdonnell.com> | 2026-04-25 19:55:15 -0400 |
| commit | 253e67c8b3a72b3a4757fdbc5845297628db0a4a (patch) | |
| tree | adf53b66087aa30dfbf8bf391a1dadb044c3bf4d /static/netbsd/man4/cmdide.4 4.html | |
| parent | a9157ce950dfe2fc30795d43b9d79b9d1bffc48b (diff) | |
docs: Added All NetBSD Manuals
Diffstat (limited to 'static/netbsd/man4/cmdide.4 4.html')
| -rw-r--r-- | static/netbsd/man4/cmdide.4 4.html | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/static/netbsd/man4/cmdide.4 4.html b/static/netbsd/man4/cmdide.4 4.html new file mode 100644 index 00000000..03a101b8 --- /dev/null +++ b/static/netbsd/man4/cmdide.4 4.html @@ -0,0 +1,65 @@ +<table class="head"> + <tr> + <td class="head-ltitle">CMDIDE(4)</td> + <td class="head-vol">Device Drivers Manual</td> + <td class="head-rtitle">CMDIDE(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">cmdide</code> — <span class="Nd">CMD + Technology and Silicon Image IDE disk controllers driver</span></p> +</section> +<section class="Sh"> +<h1 class="Sh" id="SYNOPSIS"><a class="permalink" href="#SYNOPSIS">SYNOPSIS</a></h1> +<p class="Pp"><code class="Cd">cmdide* at pci? dev ? function ? flags + 0x0000</code> + <br/> + <code class="Cd">options PCIIDE_CMD064x_DISABLE</code> + <br/> + <code class="Cd">options PCIIDE_CMD0646U_ENABLEUDMA</code></p> +</section> +<section class="Sh"> +<h1 class="Sh" id="DESCRIPTION"><a class="permalink" href="#DESCRIPTION">DESCRIPTION</a></h1> +<p class="Pp">The <code class="Nm">cmdide</code> driver supports the CMD + Technology PCI0640, PCI0643, PCI0646, PCI0648, PCI0649, and Silicon Image + 0680 IDE controllers, and provides the interface with the hardware for the + <a class="Xr">ata(4)</a> driver.</p> +<p class="Pp">The 0x0002 flag forces the <code class="Nm">cmdide</code> driver + to disable DMA on chipsets for which DMA would normally be enabled. This can + be used as a debugging aid, or to work around problems where the IDE + controller is wired up to the system incorrectly.</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">ata(4)</a>, <a class="Xr">atapi(4)</a>, + <a class="Xr">intro(4)</a>, <a class="Xr">pci(4)</a>, + <a class="Xr">pciide(4)</a>, <a class="Xr">wd(4)</a>, + <a class="Xr">wdc(4)</a></p> +</section> +<section class="Sh"> +<h1 class="Sh" id="BUGS"><a class="permalink" href="#BUGS">BUGS</a></h1> +<p class="Pp">There's no way to reliably know if a PCI064x controller is enabled + or not. If the driver finds a PCI064x, it will assume it is enabled unless + the PCIIDE_CMD064x_DISABLE option is specified in the kernel config file. + This will be a problem only if the controller has been disabled in the BIOS + and another controller has been installed and uses the ISA legacy I/O ports + and interrupts.</p> +<p class="Pp">The PCI0646U controller is known to be buggy with Ultra-DMA + transfers, so Ultra-DMA is disabled by default for this controller. To + enable Ultra-DMA, use the PCIIDE_CMD0646U_ENABLEUDMA option. Ultra-DMA can + eventually be disabled on a per-drive basis with config flags, see + <a class="Xr">wd(4)</a>.</p> +<p class="Pp">The timings used for the PIO and DMA modes for controllers listed + above are for a PCI bus running at 30 or 33 MHz. This driver may not work + properly on overclocked systems.</p> +</section> +</div> +<table class="foot"> + <tr> + <td class="foot-date">December 13, 2003</td> + <td class="foot-os">NetBSD 10.1</td> + </tr> +</table> |
