diff options
| author | Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> | 2025-11-13 20:00:47 +0200 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2025-11-14 12:34:21 -0600 |
| commit | bb1fabd0d94efc29f88f86fb996c40ac06db3669 (patch) | |
| tree | ff7adf2daaef538352d27e8aaab9674a39de8ec6 /drivers/pci/iov.c | |
| parent | ce04b2f9b0b59f2962c4632f3c6abf08601729e7 (diff) | |
PCI: Add pci_rebar_size_supported() helper
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
Diffstat (limited to 'drivers/pci/iov.c')
| -rw-r--r-- | drivers/pci/iov.c | 8 |
1 files changed, 1 insertions, 7 deletions
diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c index 04b675e90963..71ed85d38508 100644 --- a/drivers/pci/iov.c +++ b/drivers/pci/iov.c @@ -1339,19 +1339,13 @@ EXPORT_SYMBOL_GPL(pci_sriov_configure_simple); */ int pci_iov_vf_bar_set_size(struct pci_dev *dev, int resno, int size) { - u32 sizes; - if (!pci_resource_is_iov(resno)) return -EINVAL; if (pci_iov_is_memory_decoding_enabled(dev)) return -EBUSY; - sizes = pci_rebar_get_possible_sizes(dev, resno); - if (!sizes) - return -ENOTSUPP; - - if (!(sizes & BIT(size))) + if (!pci_rebar_size_supported(dev, resno, size)) return -EINVAL; return pci_rebar_set_size(dev, resno, size); |