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PCI: autoconfig: Don't allocate 64-bit addresses to 32-bit only resources

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Currently, if we happen to allocate an address requiring 64 bits to a
device only supporting 32-bit BARs, the address eventually gets silently
truncated to 32 bits. Avoid this by adding a new flag to
pciauto_region_allocate() to bail out in such situations.

Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Tuomas Tynkkynen 2018-05-14 19:38:13 +03:00 • committed by Tom Rini
parent ed12a89d07
commit d71975ae6e
4 changed files with 14 additions and 6 deletions
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2
include/pci.h
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@ -681,7 +681,7 @@ void pciauto_region_init(struct pci_region *res);
void pciauto_region_align(struct pci_region *res, pci_size_t size);
void pciauto_config_init(struct pci_controller *hose);
int pciauto_region_allocate(struct pci_region *res, pci_size_t size,
pci_addr_t *bar);
pci_addr_t *bar, bool supports_64bit);
#if !defined(CONFIG_DM_PCI) || defined(CONFIG_DM_PCI_COMPAT)
extern int pci_hose_read_config_byte_via_dword(struct pci_controller *hose,