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<html>
<head>
<title>Linux Utils 4.00.00.06 Release Notes </title>
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<a href="http://www.ti.com">
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<h1 align="center">Linux Utils 4.00.00.06 Release Notes </h1>
<h2 align="center">July 2013</h2>
<p>
This Linux Utils Release is targetted for the various DaVinci- and OMAP-based
platforms running Linux, but is generally usable for any Linux-based system.
</p>
<p align="center">
<a href="#Introduction">Introduction</a>,
<a href="#CMEM">CMEM</a>,
<a href="#Documentation">Documentation</a>,
<a href="#Whats_New">What's New</a>,
<a href="#Upgrade_Info">Upgrade Info</a>,
<a href="#Compatibility">Compatibility Information</a>,
<a href="#Device_Support">Device Support</a>,
<a href="#Validation">Validation Info</a>,
<a href="#Known_Issues">Known Issues</a>,
<a href="#Examples">Examples</a>,
<a href="#Version">Version Information</a>,
<a href="#Support">Technical Support</a>.
</p>
<hr>
<h2><a name="Introduction">Introduction</a></h2>
<h3><a name="CMEM">CMEM</a></h3>
<p>
The CMEM (Contiguous Memory) utility library provides the ability for
user-mode applications to allocate and free blocks of physically contiguous
memory. This is typically done to manage multimedia data buffers which
will be worked on by multimedia algorithms, but the memory provided by this
library can be used for any purpose.
</p>
<p>
The reason multimedia algorithms often require physically contiguous
memory is that sometimes they're on another processor which may not
contain an MMU (e.g. the C674 processor on a OMAP-L138 device), and/or
Linux-based algorithms utilize hardware accelerators (e.g. DMA, image
co-processors, etc) which don't access memory through an MMU.
</p>
<hr>
<h2><a name="Documentation">Documentation</a></h2>
<p>
The following documentation is available:
</p>
<ul>
<li>
<b>Linux Utils Application Programming Interface (API) Reference
Guide</b> (<a href="docs/html/index.html">HTML</a> |
<a href="docs/html/linuxutils_4_00_00_06.chm">CHM</a>)
</li>
</ul>
<p>
In addition, users are encouraged to monitor (and contribute to!) the
<a href="http://processors.wiki.ti.com">TI Wiki</a>.
</p>
<p>
Release notes from previous releases are also available in the <a
href="relnotes_archive">relnotes_archive</a> directory.
</p>
<hr>
<h2><a name="Whats_New">What's New</a></h2>
<p>The following significant changes have been made since Linux Utils 2.00</p>
<div class="memitem">
<div class="memproto">4.00.00.06 </div>
<div class="memdoc">
<ul>
<li>The following defects were resolved:
<table width="100%">
<colgroup width="20%">
<tbody>
<tr>
<td><b>ID</b></td>
<td><b>Headline</b></td>
</tr>
</tbody>
</table>
</li>
<br />
<li>The following enhancements were resolved:
<table width="100%">
<colgroup width="20%">
<tbody>
<tr>
<td><b>ID</b></td>
<td><b>Headline</b></td>
</tr>
<tr>
<td><a href="https://cqweb.ext.ti.com/cqweb/main?command=GenerateMainFrame&service=CQ&schema=SDO-Web&contextid=SDOWP&entityDefName=IncidentReport&username=readonly&password=readonly&entityID=SDOCM00102189">SDOCM00102189</a></td>
<td>Linux Utils product should be converted to utilize "autotools" to support release/install
</td>
</tr>
<tr>
<td><a href="https://cqweb.ext.ti.com/cqweb/main?command=GenerateMainFrame&service=CQ&schema=SDO-Web&contextid=SDOWP&entityDefName=IncidentReport&username=readonly&password=readonly&entityID=SDOCM00102184">SDOCM00102184</a></td>
<td>CMEM needs to be able to support physical addresses > 32 bits (for LPAE model)
</td>
</tr>
<tr>
<td><a href="https://cqweb.ext.ti.com/cqweb/main?command=GenerateMainFrame&service=CQ&schema=SDO-Web&contextid=SDOWP&entityDefName=IncidentReport&username=readonly&password=readonly&entityID=SDOCM00102186">SDOCM00102186</a></td>
<td>CMEM should allow a buffer to be allocated from the global CMA area
</td>
</tr>
<tr>
<td><a href="https://cqweb.ext.ti.com/cqweb/main?command=GenerateMainFrame&service=CQ&schema=SDO-Web&contextid=SDOWP&entityDefName=IncidentReport&username=readonly&password=readonly&entityID=SDOCM00102187">SDOCM00102187</a></td>
<td>CMEM should allow a buffer to be allocated from a CMEM-specificied CMA area
</td>
</tr>
</tbody>
</table>
</li>
</ul>
</div>
</div>
<br />
<div class="memitem">
<div class="memproto">3.23.00.01 </div>
<div class="memdoc">
<ul>
<li>The following defects were resolved:
<table width="100%">
<colgroup width="20%">
<tbody>
<tr>
<td><b>ID</b></td>
<td><b>Headline</b></td>
</tr>
<tr>
<td>SDOCM00087603</td>
<td>Linux Utils CMEM package doesn't automatically build cmemk.ko kernel module
</td>
</tr>
</tbody>
</table>
</li>
<li>The following enhancements were resolved:
<table width="100%">
<colgroup width="20%">
<tbody>
<tr>
<td><b>ID</b></td>
<td><b>Headline</b></td>
</tr>
<tr>
<td>SDOCM00092595</td>
<td>Remove Android support
</td>
</tr>
</tbody>
</table>
</li>
</ul>
</div>
</div>
<br />
<div class="memitem">
<div class="memproto">3.22.00.02 </div>
<div class="memdoc">
<ul>
<li>The following defects were resolved:
<table width="100%">
<colgroup width="20%">
<tbody>
<tr>
<td><b>ID</b></td>
<td><b>Headline</b></td>
</tr>
<tr>
<td>SDOCM00087225</td>
<td>CMEM kernel module build has undefined symbol "arm926_dma_map_area" for OMAP-L138 & DM365 builds
</td>
</tr>
</tbody>
</table>
</li>
<li>The following enhancements were resolved:
<table width="100%">
<colgroup width="20%">
<tbody>
<tr>
<td><b>ID</b></td>
<td><b>Headline</b></td>
</tr>
<tr>
<td>SDOCM00087322</td>
<td>Create separate glibc and uclibc build goals for CMEM
</td>
</tr>
<tr>
<td>SDOCM00087321</td>
<td>Android support needed for Linux Utils CMEM
</td>
</tr>
</tbody>
</table>
</li>
</ul>
</div>
</div>
<br />
<div class="memitem">
<div class="memproto">3.21.00.04 </div>
<div class="memdoc">
<ul>
<li>The following defects were resolved:
<table width="100%">
<colgroup width="20%">
<tbody>
<tr>
<td><b>ID</b></td>
<td><b>Headline</b></td>
</tr>
<tr>
<td>SDOCM00081998</td>
<td>CMEMK bug causes kernel Oops during insmod for "debug" build
</td>
</tr>
<tr>
<td>SDOCM00082132</td>
<td>Linux Utils CMEM_getBlockAttrs() API doesn't return error when blockId is out-of-bouds
</td>
</tr>
<tr>
<td>SDOCM00082129</td>
<td>non-LSP 2.10 code in Linux Utils edmak.c should be qualified with #ifndef LSP_210
</td>
</tr>
</tbody>
</table>
</li>
<li>The following enhancements were resolved:
<table width="100%">
<colgroup width="20%">
<tbody>
<tr>
<td><b>ID</b></td>
<td><b>Headline</b></td>
</tr>
<tr>
<td>SDOCM00082136</td>
<td>Need to update Linux Utils sdmak module to conform to newer unlocked_ioctl interface and remove old, deprecated mutex
</td>
</tr>
</tbody>
</table>
</li>
</ul>
</div>
</div>
<br />
<div class="memitem">
<div class="memproto">3.00.00.00 </div>
<div class="memdoc">
<ul>
<li>The following defects were resolved:
<table width="100%">
<colgroup width="20%">
<tbody>
<tr>
<td><b>ID</b></td>
<td><b>Headline</b></td>
</tr>
<tr>
<td>SDOCM00068571</td>
<td>CMEM kernel module doesn't handle CMEM_cacheInv()/CMEM_cacheWb()/CMEM_cacheWbInv() properly
</td>
</tr>
<tr>
<td>SDOCM00066798</td>
<td>CMEM needs to cache-invalidate heap block during "free" operation for cached allocations
</td>
</tr>
</tbody>
</table>
</li>
<li>The following enhancements were resolved:
<table width="100%">
<colgroup width="20%">
<tbody>
<tr>
<td><b>ID</b></td>
<td><b>Headline</b></td>
</tr>
<tr>
<td>SDOCM00072211</td>
<td>CMEM should allow config for fallback to a heap allocation if a pool-based allocation can't be achieved
</td>
</tr>
</tbody>
</table>
</li>
</ul>
</div>
</div>
<br />
<div class="memitem">
<div class="memproto">2.26.03.06 </div>
<div class="memdoc">
<ul>
<li>The following defects were resolved:
<table width="100%">
<colgroup width="20%">
<tbody>
<tr>
<td><b>ID</b></td>
<td><b>Headline</b></td>
</tr>
<tr>
<td>SDOCM00087222</td>
<td>CMEM kernel module build has undefined symbol "arm926_dma_map_area" for OMAP-L138 & DM365 builds
</td>
</tr>
</tbody>
</table>
</li>
<li>The following enhancements were resolved:
<table width="100%">
<colgroup width="20%">
<tbody>
<tr>
<td><b>ID</b></td>
<td><b>Headline</b></td>
</tr>
</tbody>
</table>
</li>
</ul>
</div>
</div>
<br />
<div class="memitem">
<div class="memproto">2.26.02.05 </div>
<div class="memdoc">
<ul>
<li>The following defects were resolved:
<table width="100%">
<colgroup width="20%">
<tbody>
<tr>
<td><b>ID</b></td>
<td><b>Headline</b></td>
</tr>
<tr>
<td>SDOCM00066507</td>
<td>Linux Utils CMEM_getBlockAttrs() API doesn't return error when blockId is out-of-bouds
</td>
</tr>
<tr>
<td>SDOCM00073843</td>
<td>non-LSP 2.10 code in Linux Utils edmak.c should be qualified with #ifndef LSP_210
</td>
</tr>
<tr>
<td>SDOCM00079115</td>
<td>CMEMK bug causes kernel Oops during insmod for "debug" build
</td>
</tr>
</tbody>
</table>
</li>
<li>The following enhancements were resolved:
<table width="100%">
<colgroup width="20%">
<tbody>
<tr>
<td><b>ID</b></td>
<td><b>Headline</b></td>
</tr>
<tr>
<td>SDOCM00081489</td>
<td>Need to update Linux Utils sdmak module to conform to newer unlocked_ioctl interface and remove old, deprecated mutex
</td>
</tr>
</tbody>
</table>
</li>
</ul>
</div>
</div>
<br />
<div class="memitem">
<div class="memproto">2.26.01.02 </div>
<div class="memdoc">
<ul>
<li>The following defects were resolved:
<table width="100%">
<colgroup width="20%">
<tbody>
<tr>
<td><b>ID</b></td>
<td><b>Headline</b></td>
</tr>
<tr>
<td>SDOCM00076769</td>
<td>Linux Utils kernel modules need modifications to conform to Linux kernel v2.6.37
</td>
</tr>
</tbody>
</table>
</li>
<li>The following enhancements were resolved:
<table width="100%">
<colgroup width="20%">
<tbody>
<tr>
<td><b>ID</b></td>
<td><b>Headline</b></td>
</tr>
</tbody>
</table>
</li>
</ul>
</div>
</div>
<br />
<div class="memitem">
<div class="memproto">2.26.00.01 </div>
<div class="memdoc">
<ul>
<li>The following defects were resolved:
<table width="100%">
<colgroup width="20%">
<tbody>
<tr>
<td><b>ID</b></td>
<td><b>Headline</b></td>
</tr>
<tr>
<td>SDOCM00075810</td>
<td>Linux Utils kernel modules need to use 'unlocked_ioctl' member of file_operations struct (instead of 'ioctl' member)
</td>
</tr>
</tbody>
</table>
</li>
<li>The following enhancements were resolved:
<table width="100%">
<colgroup width="20%">
<tbody>
<tr>
<td><b>ID</b></td>
<td><b>Headline</b></td>
</tr>
</tbody>
</table>
</li>
</ul>
</div>
</div>
<br />
<div class="memitem">
<div class="memproto">2.25.05.11 </div>
<div class="memdoc">
<ul>
<li>The following defects were resolved:
<table width="100%">
<colgroup width="20%">
<tbody>
<tr>
<td><b>ID</b></td>
<td><b>Headline</b></td>
</tr>
<tr>
<td>SDOCM00072689</td>
<td>CMEM's kernel module "heap fallback" feature (useHeapIfPoolUnavailable=1) has a few bugs
</td>
</tr>
</tbody>
</table>
</li>
<li>The following enhancements were resolved:
<table width="100%">
<colgroup width="20%">
<tbody>
<tr>
<td><b>ID</b></td>
<td><b>Headline</b></td>
</tr>
</tbody>
</table>
</li>
</ul>
</div>
</div>
<br />
<div class="memitem">
<div class="memproto">2.25.04.10 </div>
<div class="memdoc">
<ul>
<li>The following defects were resolved:
<table width="100%">
<colgroup width="20%">
<tbody>
<tr>
<td><b>ID</b></td>
<td><b>Headline</b></td>
</tr>
<tr>
<td>SDOCM00071596</td>
<td>CMEM still has one more place where it uses older pre-2.6.34 Linux kernel cache calls
</td>
</tr>
</tbody>
</table>
</li>
<li>The following enhancements were resolved:
<table width="100%">
<colgroup width="20%">
<tbody>
<tr>
<td><b>ID</b></td>
<td><b>Headline</b></td>
</tr>
</tbody>
</table>
</li>
</ul>
</div>
</div>
<br />
<div class="memitem">
<div class="memproto">2.25.03.09 </div>
<div class="memdoc">
<ul>
<li>The following defects were resolved:
<table width="100%">
<colgroup width="20%">
<tbody>
<tr>
<td><b>ID</b></td>
<td><b>Headline</b></td>
</tr>
<tr>
<td>SDOCM00071493</td>
<td>Linux kernel APIs called by CMEM cache flush/clean/invalidate APIs no longer available in Linux versions 2.6.34+
</td>
</tr>
</tbody>
</table>
</li>
<li>The following enhancements were resolved:
<table width="100%">
<colgroup width="20%">
<tbody>
<tr>
<td><b>ID</b></td>
<td><b>Headline</b></td>
</tr>
<tr>
<td>SDOCM00071207</td>
<td>CMEM should allow config for fallback to a heap allocation if a pool-based allocation can't be achieved
</td>
</tr>
</tbody>
</table>
</li>
</ul>
</div>
</div>
<br />
<div class="memitem">
<div class="memproto">2.25.02.08 </div>
<div class="memdoc">
<ul>
<li>The following defects were resolved:
<table width="100%">
<colgroup width="20%">
<tbody>
<tr>
<td><b>ID</b></td>
<td><b>Headline</b></td>
</tr>
<tr>
<td>SDOCM00065084</td>
<td>LinuxUtils kernel modules CMEMK and IRQK need to set file_operations struct .owner field for correct reference counting
</td>
</tr>
<tr>
<td>SDOCM00067560</td>
<td>CMEM kernel module doesn't handle CMEM_cacheInv()/CMEM_cacheWb()/CMEM_cacheWbInv() properly
</td>
</tr>
<tr>
<td>SDOCM00066794</td>
<td>CMEM needs to cache-invalidate heap block during "free" operation for cached allocations
</td>
</tr>
</tbody>
</table>
</li>
<li>The following enhancements were resolved:
<table width="100%">
<colgroup width="20%">
<tbody>
<tr>
<td><b>ID</b></td>
<td><b>Headline</b></td>
</tr>
<tr>
<td>SDOCM00065628</td>
<td>Update LinuxUtils EDMA module to handle newly coded return value from edma_alloc_channel()
</td>
</tr>
</tbody>
</table>
</li>
</ul>
</div>
</div>
<br />
<div class="memitem">
<div class="memproto">2.25.01.06 </div>
<div class="memdoc">
<ul>
<li>The following defects were resolved:
<table width="100%">
<colgroup width="20%">
<tbody>
<tr>
<td><b>ID</b></td>
<td><b>Headline</b></td>
</tr>
<tr>
<td>SDOCM00064125</td>
<td>LinuxUtils SDMAK kernel driver needs to base channel ownership on file struct instead of task struct
</td>
</tr>
</tbody>
</table>
</li>
<li>The following enhancements were resolved:
<table width="100%">
<colgroup width="20%">
<tbody>
<tr>
<td><b>ID</b></td>
<td><b>Headline</b></td>
</tr>
</tbody>
</table>
</li>
</ul>
</div>
</div>
<br />
<div class="memitem">
<div class="memproto">2.25</div>
<div class="memdoc">
<ul>
<li>New features
<ul>
<li>Device validation on OMAP-L138 and DM6467T</li>
</ul>
</li>
<br />
<li>General
<ul>
<li>
While this release fixes a few bugs (see immediately below), the
biggest change is with the ioctl() command IDs - they have changed
to incorporate a module-specific "magic" code so as to not conflict
with other device driver ioctl() command IDs. This fact means that
it is critical that the user update the sub-module user libraries
in conjunction with their associated kernel modules, although a
mismatch between kernel module and user library will be reported
during the module's "init" function (and the "init" will fail).
</li>
</ul>
</li>
<li>The following defects were resolved:
<table width="100%">
<colgroup width="15%">
<tbody>
<tr>
<td><b>ID</b></td>
<td><b>Headline</b></td>
</tr>
<tr>
<td>SDOCM00062638</td>
<td>CMEM_registerAlloc() API bug with pool-based allocations
</td>
</tr>
<tr>
<td>SDOCM00062704</td>
<td>LinuxUtils EDMA kernel module does not correctly auto-release resources in a multi-threaded application
</td>
</tr>
</tbody>
</table>
</li>
<li>The following enhancements were resolved:
<table width="100%">
<colgroup width="15%">
<tbody>
<tr>
<td><b>ID</b></td>
<td><b>Headline</b></td>
</tr>
<tr>
<td>SDOCM00061526</td>
<td>Need to remove "init_mm" reference from CMEM kernel module source code (cmemk.c)
</td>
</tr>
</tbody>
</table>
</li>
</ul>
</div>
</div>
<br />
<div class="memitem">
<div class="memproto">2.24.03</div>
<div class="memdoc">
<ul>
<li>General
<ul>
<li>
Added sharing capability to VICP/IRQK resources. This allows separate
processes to access the same resource simultaneously. For a given
process, or threads within a process, sharing is accomplished by
allowing mutliple "register" w/o any intervening "unregister".
</li>
</ul>
</li>
<li>The following defects were resolved:
<table width="100%">
<colgroup width="15%">
<tbody>
<tr>
<td><b>ID</b></td>
<td><b>Headline</b></td>
</tr>
</tbody>
</table>
</li>
<li>The following enhancements were resolved:
<table width="100%">
<colgroup width="15%">
<tbody>
<tr>
<td><b>ID</b></td>
<td><b>Headline</b></td>
</tr>
<tr>
<td>SDOCM00060312</td>
<td>Allow sharing of Linux Utils VICP resources
</td>
</tr>
</tbody>
</table>
</li>
</ul>
</div>
</div>
<br />
<div class="memitem">
<div class="memproto">2.24.02</div>
<div class="memdoc">
<ul>
<li>General
<ul>
<li>
Fixed problem in EDMA (see Headline immediately below in defects).
</li>
</ul>
</li>
<li>The following defects were resolved:
<table width="100%">
<colgroup width="15%">
<tbody>
<tr>
<td><b>ID</b></td>
<td><b>Headline</b></td>
</tr>
<tr>
<td>SDOCM00058845</td>
<td>EDMA module in Linux Utils should not allow partial freeing of a multi-PaRAM EDMA_getResource() allocation
</td>
</tr>
</tbody>
</table>
</li>
<li>The following enhancements were resolved:
<table width="100%">
<colgroup width="15%">
<tbody>
<tr>
<td><b>ID</b></td>
<td><b>Headline</b></td>
</tr>
</tbody>
</table>
</li>
</ul>
</div>
</div>
<br />
<div class="memitem">
<div class="memproto">2.24.01</div>
<div class="memdoc">
<ul>
<li>General
<ul>
<li>
CMEMK now tracks buffer ownership through the calling process' file
descriptor instead of the calling process' "task" descriptor.
</li>
</ul>
</li>
<li>The following defects were resolved:
<table width="100%">
<colgroup width="20%">
<tbody>
<tr>
<td><b>ID</b></td>
<td><b>Headline</b></td>
</tr>
</tbody>
</table>
</li>
<li>The following enhancements were resolved:
<table width="100%">
<colgroup width="20%">
<tbody>
<tr>
<td><b>ID</b></td>
<td><b>Headline</b></td>
</tr>
<tr>
<td>SDOCM00058042</td>
<td>CMEM should track buffer ownership through the file descriptor instead of the process descriptor
</td>
</tr>
</tbody>
</table>
</li>
</ul>
</div>
</div>
<br />
<div class="memitem">
<div class="memproto">2.24</div>
<div class="memdoc">
<ul>
<li>General
<ul>
<li>CMEMK can now be insmod'ed w/o any memory blocks</li>
</ul>
</li>
<li>The following defects were resolved:
<table width="100%">
<colgroup width="15%">
<tbody>
<tr>
<td><b>ID</b></td>
<td><b>Headline</b></td>
</tr>
<tr>
<td>SDOCM00057541</td>
<td>Linux Utils IRQK module can crash kernel if an operation is requested on a resource that's already been released
</td>
</tr>
<tr>
<td>SDOCM00057542</td>
<td>Linux Utils EDMAK module does not have mutex locks around registration list manipulation
</td>
</tr>
</tbody>
</table>
</li>
<li>The following enhancements were resolved:
<table width="100%">
<colgroup width="15%">
<tbody>
<tr>
<td><b>ID</b></td>
<td><b>Headline</b></td>
</tr>
<tr>