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PCI: define PCI resource names in an 'enum'

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This patch moves all definitions of the PCI resource names to an 'enum',
and also replaces some hard-coded resource variables with symbol
names. This change eases introduction of device specific resources.

Reviewed-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Yu Zhao <yu.zhao@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
This commit is contained in:
Yu Zhao
2008-11-22 02:39:32 +08:00
committed by Jesse Barnes
parent 14add80b51
commit fde09c6d8f
4 changed files with 32 additions and 18 deletions
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37
include/linux/pci.h
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@@ -82,7 +82,30 @@ enum pci_mmap_state {
#define PCI_DMA_FROMDEVICE 2
#define PCI_DMA_NONE 3
#define DEVICE_COUNT_RESOURCE 12
/*
* For PCI devices, the region numbers are assigned this way:
*/
enum {
/* #0-5: standard PCI resources */
PCI_STD_RESOURCES,
PCI_STD_RESOURCE_END = 5,
/* #6: expansion ROM resource */
PCI_ROM_RESOURCE,
/* resources assigned to buses behind the bridge */
#define PCI_BRIDGE_RESOURCE_NUM 4
PCI_BRIDGE_RESOURCES,
PCI_BRIDGE_RESOURCE_END = PCI_BRIDGE_RESOURCES +
PCI_BRIDGE_RESOURCE_NUM - 1,
/* total resources associated with a PCI device */
PCI_NUM_RESOURCES,
/* preserve this for compatibility */
DEVICE_COUNT_RESOURCE
};
typedef int __bitwise pci_power_t;
@@ -274,18 +297,6 @@ static inline void pci_add_saved_cap(struct pci_dev *pci_dev,
hlist_add_head(&new_cap->next, &pci_dev->saved_cap_space);
}
/*
* For PCI devices, the region numbers are assigned this way:
*
* 0-5 standard PCI regions
* 6 expansion ROM
* 7-10 bridges: address space assigned to buses behind the bridge
*/
#define PCI_ROM_RESOURCE 6
#define PCI_BRIDGE_RESOURCES 7
#define PCI_NUM_RESOURCES 11
#ifndef PCI_BUS_NUM_RESOURCES
#define PCI_BUS_NUM_RESOURCES 16
#endif