diff options
| author | Tomasz Nowicki <tn@semihalf.com> | 2016-06-02 10:41:01 +0200 |
|---|---|---|
| committer | Graeme Gregory <graeme.gregory@linaro.org> | 2016-06-07 14:09:29 +0100 |
| commit | 072779d6ec345604b76c25008ecc835de37ce485 (patch) | |
| tree | c711809d37ce55deccaac650adfdbffdff9768c8 /include/asm-generic | |
| parent | e9ecc14f69837944becb3e1b34c4f30f9faeb038 (diff) | |
pci, acpi: Match PCI config space accessors against platfrom specific ECAM quirks.
Some platforms may not be fully compliant with generic set of PCI config
accessors. For these cases we implement the way to overwrite accessors
set. Algorithm traverses available quirk list, matches against
<oem_id, oem_rev, domain, bus number> tuple and returns corresponding
PCI config ops. oem_id and oem_rev come from MCFG table standard header.
All quirks can be defined using DECLARE_ACPI_MCFG_FIXUP() macro and
kept self contained. Example:
/* Custom PCI config ops */
static struct pci_generic_ecam_ops foo_pci_ops = {
.bus_shift = 24,
.pci_ops = {
.map_bus = pci_ecam_map_bus,
.read = foo_ecam_config_read,
.write = foo_ecam_config_write,
}
};
DECLARE_ACPI_MCFG_FIXUP(&foo_pci_ops, <oem_id_str>, <oem_rev>, <domain_nr>, <bus_nr>);
Signed-off-by: Tomasz Nowicki <tn@semihalf.com>
Diffstat (limited to 'include/asm-generic')
| -rw-r--r-- | include/asm-generic/vmlinux.lds.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h index 6a67ab94b553..43604fc68507 100644 --- a/include/asm-generic/vmlinux.lds.h +++ b/include/asm-generic/vmlinux.lds.h @@ -300,6 +300,13 @@ VMLINUX_SYMBOL(__end_pci_fixups_suspend_late) = .; \ } \ \ + /* ACPI MCFG quirks */ \ + .acpi_fixup : AT(ADDR(.acpi_fixup) - LOAD_OFFSET) { \ + VMLINUX_SYMBOL(__start_acpi_mcfg_fixups) = .; \ + *(.acpi_fixup_mcfg) \ + VMLINUX_SYMBOL(__end_acpi_mcfg_fixups) = .; \ + } \ + \ /* Built-in firmware blobs */ \ .builtin_fw : AT(ADDR(.builtin_fw) - LOAD_OFFSET) { \ VMLINUX_SYMBOL(__start_builtin_fw) = .; \ |