http://elinux.org/index.php?title=Mainline_android_fiq_glue_patch_in_Linux_kernel&feed=atom&action=history 2013-05-19T15:56:42Z Revision history for this page on the wiki MediaWiki 1.21alpha http://elinux.org/index.php?title=Mainline_android_fiq_glue_patch_in_Linux_kernel&diff=136826&oldid=prev 2012-06-04T19:27:30Z

<p>‎<span dir="auto"><span class="autocomment">Contractor Candidates: </span> fix typo in contractor candidate name</span></p> <table class='diff diff-contentalign-left'> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr style='vertical-align: top;'> <td colspan='2' style="background-color: white; color:black;">← Older revision</td> <td colspan='2' style="background-color: white; color:black;">Revision as of 19:27, 4 June 2012</td> </tr><tr><td colspan="2" class="diff-lineno">Line 33:</td> <td colspan="2" class="diff-lineno">Line 33:</td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>== Contractor Candidates ==</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>== Contractor Candidates ==</div></td></tr> <tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div><del class="diffchange diffchange-inline">Alesandro </del>Rubini</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">Alessandro </ins>Rubini</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>== Comments ==</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>== Comments ==</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>[[Category:Project proposals 2012]]</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>[[Category:Project proposals 2012]]</div></td></tr> <!-- diff cache key elinux:diff:version:1.11a:oldid:134894:newid:136826 --> </table>

Tim Bird http://elinux.org/index.php?title=Mainline_android_fiq_glue_patch_in_Linux_kernel&diff=134894&oldid=prev 2012-05-30T22:04:38Z

<p></p> <table class='diff diff-contentalign-left'> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr style='vertical-align: top;'> <td colspan='2' style="background-color: white; color:black;">← Older revision</td> <td colspan='2' style="background-color: white; color:black;">Revision as of 22:04, 30 May 2012</td> </tr><tr><td colspan="2" class="diff-lineno">Line 27:</td> <td colspan="2" class="diff-lineno">Line 27:</td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>** See &lt;kernel-src&gt;/arch/arm/kernel/fiq.c</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>** See &lt;kernel-src&gt;/arch/arm/kernel/fiq.c</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>** Need to investigate more to see why this API is not sufficient (why is fiq_glue.c needed?)</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>** Need to investigate more to see why this API is not sufficient (why is fiq_glue.c needed?)</div></td></tr> <tr><td colspan="2">&#160;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">*** Partial answer: fiq_glue code sets up fiq stack, and code to transition to C.&#160; Existing fiq code appears only to allow claiming and relinquishing the FIQ.</ins></div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>== Scope ==</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>== Scope ==</div></td></tr> <tr><td colspan="2" class="diff-lineno">Line 32:</td> <td colspan="2" class="diff-lineno">Line 33:</td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>== Contractor Candidates ==</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>== Contractor Candidates ==</div></td></tr> <tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div><del class="diffchange diffchange-inline">None currently.</del></div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins class="diffchange diffchange-inline">Alesandro Rubini</ins></div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>== Comments ==</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>== Comments ==</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>[[Category:Project proposals 2012]]</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>[[Category:Project proposals 2012]]</div></td></tr> </table>

Tim Bird http://elinux.org/index.php?title=Mainline_android_fiq_glue_patch_in_Linux_kernel&diff=134324&oldid=prev 2012-05-29T17:27:54Z

<p>‎<span dir="auto"><span class="autocomment">Related work</span></span></p> <table class='diff diff-contentalign-left'> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr style='vertical-align: top;'> <td colspan='2' style="background-color: white; color:black;">← Older revision</td> <td colspan='2' style="background-color: white; color:black;">Revision as of 17:27, 29 May 2012</td> </tr><tr><td colspan="2" class="diff-lineno">Line 26:</td> <td colspan="2" class="diff-lineno">Line 26:</td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* The current kernel appears to support some way to claim the FIQ</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* The current kernel appears to support some way to claim the FIQ</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>** See &lt;kernel-src&gt;/arch/arm/kernel/fiq.c</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>** See &lt;kernel-src&gt;/arch/arm/kernel/fiq.c</div></td></tr> <tr><td class='diff-marker'>−</td><td style="background: #ffa; color:black; font-size: smaller;"><div>** Need to investigate more to see why this API is not sufficient (<del class="diffchange diffchange-inline">which </del>is fiq_glue.c needed?)</div></td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div>** Need to investigate more to see why this API is not sufficient (<ins class="diffchange diffchange-inline">why </ins>is fiq_glue.c needed?)</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>== Scope ==</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>== Scope ==</div></td></tr> </table>

Tim Bird http://elinux.org/index.php?title=Mainline_android_fiq_glue_patch_in_Linux_kernel&diff=133094&oldid=prev 2012-05-28T08:03:20Z

<p>Created page with &quot;; Summary: Mainline android fiq_glue patch in Linux kernel ; Proposer: Tim Bird, Sony Network Entertainment == Description == Android includes some patches to support serial-li...&quot;</p> <p><b>New page</b></p><div>; Summary: Mainline android fiq_glue patch in Linux kernel<br /> <br /> ; Proposer: Tim Bird, Sony Network Entertainment<br /> <br /> == Description ==<br /> Android includes some patches to support serial-line debugging via the ARM FIQ (Fast IRQ).<br /> This support includes some wrappers (fiq_glue) for managing the interrupt handling for FIQs<br /> in C, as well as the actual debug code itself. This code is present in the<br /> Android common kernel repository, and Tim Bird has a broken-out patch for this feature, which<br /> includes the code for both the glue portion and the debugger portion of this<br /> feature.&quot;<br /> <br /> It would be handy to have this FIQ glue code available for other embedded devices<br /> (whether the FIQ is used for debugging or some other thing). At Sony, we've used FIQ in<br /> some products as a way to generate process stack dumps. Maybe it should be tied as<br /> a wakeup mechanism to KDB?<br /> <br /> This project consists of merely getting the FIQ glue code integrated, so that it<br /> is easier to install an FIQ handler. The current Android code only supports a single<br /> FIQ handler at a time. It might be nice to investigate supporting multiple handlers<br /> (that is, sharing the FIQ).<br /> <br /> == Related work ==<br /> * It looks like the glue code was added to OLPC<br /> ** See https://github.com/andreiw/andreiw-wip/blob/master/linux/3.2/olpc/fiq/0002-ARM-Add-Google-FIQ-glue-code.patch<br /> * The current kernel appears to support some way to claim the FIQ<br /> ** See &lt;kernel-src&gt;/arch/arm/kernel/fiq.c<br /> ** Need to investigate more to see why this API is not sufficient (which is fiq_glue.c needed?)<br /> <br /> == Scope ==<br /> 3 to 4 person-weeks?<br /> <br /> == Contractor Candidates ==<br /> None currently.<br /> <br /> == Comments ==<br /> <br /> [[Category:Project proposals 2012]]</div>

Hisaomunakata