PCI: Add pci_rebar_size_supported() helper

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Many callers of pci_rebar_get_possible_sizes() are interested in finding
out if a particular encoded BAR Size (PCIe r7.0, sec 7.8.6.3) is supported
by the particular BAR.

Add pci_rebar_size_supported() into PCI core to make it easy for the
drivers to determine if the BAR size is supported or not.

Use the new function in pci_resize_resource() and in
pci_iov_vf_bar_set_size().

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Link: https://patch.msgid.link/20251113180053.27944-6-ilpo.jarvinen@linux.intel.com

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Ilpo Järvinen 2025-11-13 20:00:47 +02:00 • committed by Bjorn Helgaas

parent ce04b2f9b0

commit bb1fabd0d9

3 changed files with 21 additions and 13 deletions

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8

drivers/pci/iov.c

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25

drivers/pci/rebar.c

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1

include/linux/pci.h

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