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| author | Tuan Phan <tuanphan@os.amperecomputing.com> | 2020-08-06 14:57:34 -0700 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2020-09-17 12:27:43 -0500 |
| commit | 877c1a5f79c6984bbe3f2924234c08e2f4f1acd5 (patch) | |
| tree | 78661f2d38a78f879a6d1e5f7d1a5122c99daa69 /drivers/pci/ecam.c | |
| parent | 2ce02a864ac1a2bf99baeb20d38100d2cc413ac2 (diff) | |
| download | linux-877c1a5f79c6984bbe3f2924234c08e2f4f1acd5.tar.gz | |
PCI/ACPI: Add Ampere Altra SOC MCFG quirk
Ampere Altra SOC supports only 32-bit ECAM reads. Add an MCFG quirk for
the platform.
Link: https://lore.kernel.org/r/1596751055-12316-1-git-send-email-tuanphan@os.amperecomputing.com
Signed-off-by: Tuan Phan <tuanphan@os.amperecomputing.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers/pci/ecam.c')
| -rw-r--r-- | drivers/pci/ecam.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/pci/ecam.c b/drivers/pci/ecam.c index 8f065a42fc1a..b54d32a31669 100644 --- a/drivers/pci/ecam.c +++ b/drivers/pci/ecam.c @@ -168,4 +168,14 @@ const struct pci_ecam_ops pci_32b_ops = { .write = pci_generic_config_write32, } }; + +/* ECAM ops for 32-bit read only (non-compliant) */ +const struct pci_ecam_ops pci_32b_read_ops = { + .bus_shift = 20, + .pci_ops = { + .map_bus = pci_ecam_map_bus, + .read = pci_generic_config_read32, + .write = pci_generic_config_write, + } +}; #endif |