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PCI scan by BAR number

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Added BAR (Base Address Registers) as a parameter for PCI scan.
Some devices (as UART in Quark) use two set of BARs for different
purposes. A driver may require only one of them.

BARs are numbered from 0 to PCI_MAX_BARS.
PCI_BAR_ANY means ignore the BAR number. Constants are defined
in drivers/pci.h

If device class is not specified as a scanning parameter, and
set to 0, ignore it.

Change-Id: I6b7116c5c6cf9c470ab22bec9eb74842f15b5d99
Signed-off-by: Dmitriy Korovkin <dmitriy.korovkin@windriver.com>
This commit is contained in:
Dmitriy Korovkin 2015-05-25 17:26:33 -04:00 • committed by Anas Nashif
commit 627155afeb
2 changed files with 17 additions and 5 deletions
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3
include/drivers/pci/pci.h
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@ -43,6 +43,9 @@ Module declares routines of PCI bus initialization and query
#define BAR_SPACE_MEM 0
#define BAR_SPACE_IO 1
#define PCI_MAX_BARS 6
#define PCI_BAR_ANY PCI_MAX_BARS
/* PCI device information */
struct pci_dev_info {