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* [Bug 1001658] New: HAL_DCACHE_FLUSH macro for mpc8xx broken
@ 2012-08-20 11:25 bugzilla-daemon
  0 siblings, 0 replies; 2+ messages in thread
From: bugzilla-daemon @ 2012-08-20 11:25 UTC (permalink / raw)
  To: unassigned

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http://bugs.ecos.sourceware.org/show_bug.cgi?id=1001658

           Summary: HAL_DCACHE_FLUSH macro for mpc8xx broken
           Product: eCos
           Version: CVS
          Platform: All
        OS/Version: PowerPC
            Status: UNCONFIRMED
          Severity: normal
          Priority: low
         Component: HAL
        AssignedTo: unassigned@bugs.ecos.sourceware.org
        ReportedBy: bernd.edlinger@hotmail.de
                CC: ecos-bugs@ecos.sourceware.org
             Class: Advice Request


Created an attachment (id=1906)
 --> (http://bugs.ecos.sourceware.org/attachment.cgi?id=1906)
possible fix, untested.

Hello,

this macros just look wrong, however I have not tested it.

HAL_DCACHE_FLUSH(), HAL_DCACHE_INVALIDATE()
and HAL_DCACHE_STORE(), and a fiew others:

The loop may fail to store the complete range, if
the start is not cache-aligned, for instance:

HAL_DCACHE_FLUSH(0x40000008,16)

flushes only one cache line instead of two.

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^ permalink raw reply	[flat|nested] 2+ messages in thread
* [Bug 1001658] New: HAL_DCACHE_FLUSH macro for mpc8xx broken
@ 2012-08-20 11:25 bugzilla-daemon
  0 siblings, 0 replies; 2+ messages in thread
From: bugzilla-daemon @ 2012-08-20 11:25 UTC (permalink / raw)
  To: ecos-bugs

Please do not reply to this email. Use the web interface provided at:
http://bugs.ecos.sourceware.org/show_bug.cgi?id=1001658

           Summary: HAL_DCACHE_FLUSH macro for mpc8xx broken
           Product: eCos
           Version: CVS
          Platform: All
        OS/Version: PowerPC
            Status: UNCONFIRMED
          Severity: normal
          Priority: low
         Component: HAL
        AssignedTo: unassigned@bugs.ecos.sourceware.org
        ReportedBy: bernd.edlinger@hotmail.de
                CC: ecos-bugs@ecos.sourceware.org
             Class: Advice Request


Created an attachment (id=1906)
 --> (http://bugs.ecos.sourceware.org/attachment.cgi?id=1906)
possible fix, untested.

Hello,

this macros just look wrong, however I have not tested it.

HAL_DCACHE_FLUSH(), HAL_DCACHE_INVALIDATE()
and HAL_DCACHE_STORE(), and a fiew others:

The loop may fail to store the complete range, if
the start is not cache-aligned, for instance:

HAL_DCACHE_FLUSH(0x40000008,16)

flushes only one cache line instead of two.

-- 
Configure bugmail: http://bugs.ecos.sourceware.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.


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