RTEMS-mvme5500 BSP update

Joel Sherrill joel.sherrill at OARcorp.com
Thu Mar 19 14:29:35 UTC 2009

Any chance of getting a patch to apply to the
RTEMS source base?

--joel sherrill

Kate Feng wrote:
> Hi,
> The stable version of RTEMS-mvme5500 BSP is posted at
> http://www.nsls.bnl.gov/facility/expsys/software/EPICS/
> The "RTEMS-mvme5500 BSP v1.4.9.1", was tested
> under RTEMS 4.9.1, and the "RTEMS-mvme5500 BSP v1.4.8.0"
> was tested under RTEMS 4.8.0..
> The highlights of the change are :
> 1)  Use the GT_GPP_Value register (0xf104) instead of the
> GT_GPP_Interrupt_Cause register (0xf108) to monitor the cause
> of the level sensitive interrupts. See irq/BSP_irq.c.
> This is an unique solution which solves part of the bugs in
> the BSP, which especially affects the 1GHz network driver.
> 2) There is no change in the 100 MHz network driver. Thus,
> its performance stays the same.  Some bugs were fixed in the
> 1GHz network drivers (e.g. if_wm.c).
> 3)Enable "PCI Read Agressive Prefetch", "PCI Read Line Agressive Prefetch",
> and "PCI Read Multiple Agressive Prefetch" to improve the performance of
> the PCI based applications (e.g. 1GHz network driver). See 
> pci/pci_interface.c.
> However, performance is driven by applications.
> There is no known bug at this point.  Any feedback which is related to
> the RTEMS-mvme5500 BSP would be highly appreciated.
> Hope this helps,
> Kate
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> rtems-users at rtems.com
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Joel Sherrill, Ph.D.             Director of Research & Development
joel.sherrill at OARcorp.com        On-Line Applications Research
Ask me about RTEMS: a free RTOS  Huntsville AL 35805
   Support Available             (256) 722-9985

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