diff options
| author | Zhiyuan Dai <daizhiyuan@phytium.com.cn> | 2025-03-07 13:35:29 +0800 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2025-03-07 11:23:34 -0600 |
| commit | 5af473941b56189423a7d16c05efabaf77299847 (patch) | |
| tree | 9c0a4da879248c2ac4625d553c19e78d7fd6f46e /include/uapi | |
| parent | PCI: Rework optional resource handling (diff) | |
| download | linux-5af473941b56189423a7d16c05efabaf77299847.tar.gz linux-5af473941b56189423a7d16c05efabaf77299847.zip | |
PCI: Increase Resizable BAR support from 512 GB to 128 TB
Per PCIe r6.0, sec 7.8.6.2, devices can advertise Resizable BAR sizes up to
128 TB in the Resizable BAR Capability register. Larger sizes can be
advertised via the Capability register, but that requires an API change.
Update pci_rebar_get_possible_sizes() and pbus_size_mem() to increase the
sizes we currently support from 512 GB to 128 TB.
Link: https://lore.kernel.org/r/20250307053535.44918-1-daizhiyuan@phytium.com.cn
Signed-off-by: Zhiyuan Dai <daizhiyuan@phytium.com.cn>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'include/uapi')
| -rw-r--r-- | include/uapi/linux/pci_regs.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/uapi/linux/pci_regs.h b/include/uapi/linux/pci_regs.h index 3445c4970e4d..3c2558b98d22 100644 --- a/include/uapi/linux/pci_regs.h +++ b/include/uapi/linux/pci_regs.h @@ -1013,7 +1013,7 @@ /* Resizable BARs */ #define PCI_REBAR_CAP 4 /* capability register */ -#define PCI_REBAR_CAP_SIZES 0x00FFFFF0 /* supported BAR sizes */ +#define PCI_REBAR_CAP_SIZES 0xFFFFFFF0 /* supported BAR sizes */ #define PCI_REBAR_CTRL 8 /* control register */ #define PCI_REBAR_CTRL_BAR_IDX 0x00000007 /* BAR index */ #define PCI_REBAR_CTRL_NBAR_MASK 0x000000E0 /* # of resizable BARs */ |