* meaning of macros PCI_PROBE_CONF1|2
@ 2012-04-23 6:53 Onkar N Mahajan
2012-04-23 16:15 ` Randy Dunlap
0 siblings, 1 reply; 2+ messages in thread
From: Onkar N Mahajan @ 2012-04-23 6:53 UTC (permalink / raw)
To: linux-pci
I was searching for the meaning of Macros - PCI_PROBE_NOEARLY,
PCI_PROBE_MMCONF, PCI_PROBE_CONF1 and PCI_PROBE_CONF2 , these are
defined in linux/arch/x86/include/asm/pci_x86.h. I tried Googling
but found nothing but browser cross-references.
Please help me with some hints to start with.
Regards,
Onkar
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: meaning of macros PCI_PROBE_CONF1|2
2012-04-23 6:53 meaning of macros PCI_PROBE_CONF1|2 Onkar N Mahajan
@ 2012-04-23 16:15 ` Randy Dunlap
0 siblings, 0 replies; 2+ messages in thread
From: Randy Dunlap @ 2012-04-23 16:15 UTC (permalink / raw)
To: Onkar N Mahajan; +Cc: linux-pci
On 04/22/2012 11:53 PM, Onkar N Mahajan wrote:
> I was searching for the meaning of Macros - PCI_PROBE_NOEARLY,
> PCI_PROBE_MMCONF, PCI_PROBE_CONF1 and PCI_PROBE_CONF2 , these are
> defined in linux/arch/x86/include/asm/pci_x86.h. I tried Googling
> but found nothing but browser cross-references.
These values are just bit flags that control which type(s) of
PCI probing are going to be used. They are used to set values
in the variable
unsigned int pci_probe = PCI_PROBE_BIOS | PCI_PROBE_CONF1 | PCI_PROBE_CONF2 |
PCI_PROBE_MMCONF;
in arch/x86/pci/common.c. This file also has code that parses the
kernel's boot command line to check if PCI probing control options
are used on it. If so, the 'pci_probe' variable is updated according
to the options on the command line. Some command-line options also
depend on various Kconfig options being enabled.
> Please help me with some hints to start with.
--
~Randy
^ permalink raw reply [flat|nested] 2+ messages in thread
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2012-04-23 6:53 meaning of macros PCI_PROBE_CONF1|2 Onkar N Mahajan
2012-04-23 16:15 ` Randy Dunlap
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