Xilinx ML310 Linux 2.6 PCI bridge

[Jean-Samuel Chenard]

Hi,

Thanks to the valuable information provided by this discussion group and
particularly by Grant Likely from Secret Lab Technologies, I was able to
setup and run Linux 2.6 on my ML-310 development platform.

On the ML-310, if I want to use the Ethernet port and some other
peripherals, I need to go through the PCI bus via the opb_pci core on the
FPGA.

However, when I enable PCI support in the kernel, I get the following error
messages:

arch/ppc/syslib/ppc4xx_setup.c: In function `ppc4xx_map_io':
arch/ppc/syslib/ppc4xx_setup.c:118: error: `PPC4xx_PCI_IO_VADDR' undeclared
(first use in this function)
arch/ppc/syslib/ppc4xx_setup.c:118: error: (Each undeclared identifier is
reported only once
arch/ppc/syslib/ppc4xx_setup.c:118: error: for each function it appears in.)
arch/ppc/syslib/ppc4xx_setup.c:119: error: `PPC4xx_PCI_IO_PADDR' undeclared
(first use in this function)
arch/ppc/syslib/ppc4xx_setup.c:119: error: `PPC4xx_PCI_IO_SIZE' undeclared
(first use in this function)
arch/ppc/syslib/ppc4xx_setup.c:120: error: `PPC4xx_PCI_CFG_VADDR' undeclared
(first use in this function)
arch/ppc/syslib/ppc4xx_setup.c:121: error: `PPC4xx_PCI_CFG_PADDR' undeclared
(first use in this function)
arch/ppc/syslib/ppc4xx_setup.c:121: error: `PPC4xx_PCI_CFG_SIZE' undeclared
(first use in this function)
arch/ppc/syslib/ppc4xx_setup.c:122: error: `PPC4xx_PCI_LCFG_VADDR'
undeclared (first use in this function)
arch/ppc/syslib/ppc4xx_setup.c:123: error: `PPC4xx_PCI_LCFG_PADDR'
undeclared (first use in this function)
arch/ppc/syslib/ppc4xx_setup.c:123: error: `PPC4xx_PCI_LCFG_SIZE' undeclared
(first use in this function)
make[1]: *** [arch/ppc/syslib/ppc4xx_setup.o] Error 1

My Xilinx Platform Studio has the proper PCI bridge component, but the
exported constants in xparameters_ml300.h are not helping me figure out the
mapping that I should give to those PPC4xx values (the parameters contain a
lot of XPAR_PCI32_BRIDGE_* constants).  I'm guessing that the address
mappings must be set from some of those for the PCI range to appear in the
PowerPC address space.  Please correct me if I'm misunderstanding something
here...

I only saw one mention of this error related to the ML-310 in a discussion
dating in 2005 and the answer was that the 2.6 kernel was not supporting the
Virtex-II Pro too well at the time.  Has this changed and does anyone have
had success using the PCI bridge in Linux 2.6 on an ML-310 development
platform ?

Thanks,

Jean-Samuel
-- 
Integrated Microsystems Laboratory
McGill University, Montréal, QC, CANADA
Web Page: http://chaos.ece.mcgill.ca
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