Re: pci_read_config_byte in Hardhat CDK1.2 for powerpc

"Tod E. Kurt" wrote:

Zhaobin Zhu wrote:

quoted

Hi,

Anybody knows where the function "pci_read_config_byte(..)" is defined ?

Again, use 'grep' in '/usr/include/linux/*.h'.

I did that and found it in '/usr/include/linux/pci.h'.

Yes,  pci_read_config_byte(..) is declared in include/linux/pci.h, but I
can't find
its C source anywhere. I do find it in System.map.

Thanks,

--
 Zhaobin Zhu
 zzhu@emc.com


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Zhaobin Zhu wrote:

"Tod E. Kurt" wrote:

quoted

Zhaobin Zhu wrote:

quoted

Hi,

Anybody knows where the function "pci_read_config_byte(..)" is defined ?

Again, use 'grep' in '/usr/include/linux/*.h'.

I did that and found it in '/usr/include/linux/pci.h'.

Yes,  pci_read_config_byte(..) is declared in include/linux/pci.h, but I
can't find
its C source anywhere. I do find it in System.map.

The definitions of pci_xxx_config_yyy and pcibios_xxx_config_yyy are hard to
find.

pci_xxx_config_yyy are defined by the PCI_OP() macro in drivers/pci/pci.c
pcibios_xxx_config_yyy are defined by the PCI_OP() macro in
drivers/pci/compat.c

At least this is true in 2.4.0-test2.

Mark


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Zhaobin Zhu wrote:

"Tod E. Kurt" wrote:

quoted

Zhaobin Zhu wrote:

quoted

Hi,

Anybody knows where the function "pci_read_config_byte(..)" is defined ?

Again, use 'grep' in '/usr/include/linux/*.h'.

I did that and found it in '/usr/include/linux/pci.h'.

Yes,  pci_read_config_byte(..) is declared in include/linux/pci.h, but I
can't find
its C source anywhere. I do find it in System.map.

As someone else mentioned, it (along with most all the other functions
declared in 'pci.h') is is '/usr/src/linux/drivers/pci/pci.c'.  It wraps
'pcibios_read_config_byte', which is defined in
'/usr/src/linux/arch/i386/kernel/bios32.c' for PCs and in various files
(depending on specific arch) in '/usr/src/linux/arch/ppc/kernel'.

-=tod

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"Mark A. Greer" wrote:

The definitions of pci_xxx_config_yyy and pcibios_xxx_config_yyy are hard to
find.

pci_xxx_config_yyy are defined by the PCI_OP() macro in drivers/pci/pci.c
pcibios_xxx_config_yyy are defined by the PCI_OP() macro in
drivers/pci/compat.c

Thanks, Mark.

Here is what I found:

pci_read_config_byte =  generic_pcibios_read_byte =
ppc_md.pcibios_read_config_byte = indirect_pcibios_read_config_byte
in arch/ppc/kernel/indirect_pci.c

--
 Zhaobin Zhu
 zzhu@emc.com

** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/

Zhaobin Zhu wrote:

"Mark A. Greer" wrote:

quoted

The definitions of pci_xxx_config_yyy and pcibios_xxx_config_yyy are hard to
find.

pci_xxx_config_yyy are defined by the PCI_OP() macro in drivers/pci/pci.c
pcibios_xxx_config_yyy are defined by the PCI_OP() macro in
drivers/pci/compat.c

Thanks, Mark.

Here is what I found:

pci_read_config_byte =  generic_pcibios_read_byte =
ppc_md.pcibios_read_config_byte = indirect_pcibios_read_config_byte
in arch/ppc/kernel/indirect_pci.c

Yes, that is true because of the "set_config_access_method(indirect)" call in the
*_setup.c or *_pci.c routine for your platform (if you're looking at the
sandpoint, its in sandpoint_setup.c).  Other access methods are supported too.

Mark

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