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[pci] Handle sizing of 64-bit BARs

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Provide pci_bar_set() to handle setting the base address for a
potentially 64-bit BAR, and rewrite pci_bar_size() to correctly handle
sizing of 64-bit BARs.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2025-10-14 13:46:54 +01:00
parent e80818e4f6
commit 94902ae187
3 changed files with 79 additions and 37 deletions
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4
src/include/ipxe/pci.h
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@@ -314,6 +314,9 @@ struct pci_driver {
extern void adjust_pci_device ( struct pci_device *pci );
extern unsigned long pci_bar_start ( struct pci_device *pci,
unsigned int reg );
extern void pci_bar_set ( struct pci_device *pci, unsigned int reg,
unsigned long start );
extern unsigned long pci_bar_size ( struct pci_device *pci, unsigned int reg );
extern int pci_read_config ( struct pci_device *pci );
extern int pci_find_next ( struct pci_device *pci, uint32_t *busdevfn );
extern int pci_find_driver ( struct pci_device *pci );
@@ -322,7 +325,6 @@ extern void pci_remove ( struct pci_device *pci );
extern int pci_find_capability ( struct pci_device *pci, int capability );
extern int pci_find_next_capability ( struct pci_device *pci,
int pos, int capability );
extern unsigned long pci_bar_size ( struct pci_device *pci, unsigned int reg );
extern void pci_reset ( struct pci_device *pci, unsigned int exp );
/**