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| author | Nico Huber <nico.huber@secunet.com> | 2015-10-26 12:03:54 +0100 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2015-11-04 16:17:12 +0100 |
| commit | 6c4751d5965c3c8d87b21c39efd66ccc26ff5823 (patch) | |
| tree | 3d09f7ca3e666221036b9836ab0869cb540b8ae4 /src/arch/x86/acpi.c | |
| parent | e561f35fa5126e89b568292864acd8b9b95377e0 (diff) | |
| download | coreboot-6c4751d5965c3c8d87b21c39efd66ccc26ff5823.tar.xz | |
ACPI: Add functions for DMAR I/O-APIC and HPET entries
Refactor acpi_create_dmar_drhd_ds_pci() and add similar functions for
I/O-APICs and MSI capable HPETs. We violate the spec [1] here, which
talks about 16-bit source-ids spread over start_bus and path entries.
Intel actually uses bus/dev/fn identification for those devices too,
and so do we.
[1] Intel Virtualization Technology for Directed I/O
Architecture Specification
Document-Number: D51397
Change-Id: I0fce075961762610d44b5552b71e010511871fc2
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: http://review.coreboot.org/12192
Tested-by: build bot (Jenkins)
Reviewed-by: Duncan Laurie <dlaurie@google.com>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Diffstat (limited to 'src/arch/x86/acpi.c')
| -rw-r--r-- | src/arch/x86/acpi.c | 41 |
1 files changed, 33 insertions, 8 deletions
diff --git a/src/arch/x86/acpi.c b/src/arch/x86/acpi.c index 1570dc8d07..55995c9542 100644 --- a/src/arch/x86/acpi.c +++ b/src/arch/x86/acpi.c @@ -436,20 +436,45 @@ void acpi_dmar_drhd_fixup(unsigned long base, unsigned long current) drhd->length = current - base; } -unsigned long acpi_create_dmar_drhd_ds_pci(unsigned long current, u8 segment, - u8 dev, u8 fn) +static unsigned long acpi_create_dmar_drhd_ds(unsigned long current, + enum dev_scope_type type, u8 enumeration_id, u8 bus, u8 dev, u8 fn) { + /* we don't support longer paths yet */ + const size_t dev_scope_length = sizeof(dev_scope_t) + 2; + dev_scope_t *ds = (dev_scope_t *)current; - memset(ds, 0, sizeof(*ds)); - ds->type = SCOPE_PCI_ENDPOINT; - ds->length = sizeof(*ds) + 2; /* we don't support longer paths yet */ - ds->start_bus = segment; - ds->path[0].dev = dev; - ds->path[0].fn = fn; + memset(ds, 0, dev_scope_length); + ds->type = type; + ds->length = dev_scope_length; + ds->enumeration = enumeration_id; + ds->start_bus = bus; + ds->path[0].dev = dev; + ds->path[0].fn = fn; return ds->length; } +unsigned long acpi_create_dmar_drhd_ds_pci(unsigned long current, u8 bus, + u8 dev, u8 fn) +{ + return acpi_create_dmar_drhd_ds(current, + SCOPE_PCI_ENDPOINT, 0, bus, dev, fn); +} + +unsigned long acpi_create_dmar_drhd_ds_ioapic(unsigned long current, + u8 enumeration_id, u8 bus, u8 dev, u8 fn) +{ + return acpi_create_dmar_drhd_ds(current, + SCOPE_IOAPIC, enumeration_id, bus, dev, fn); +} + +unsigned long acpi_create_dmar_drhd_ds_msi_hpet(unsigned long current, + u8 enumeration_id, u8 bus, u8 dev, u8 fn) +{ + return acpi_create_dmar_drhd_ds(current, + SCOPE_MSI_HPET, enumeration_id, bus, dev, fn); +} + /* http://h21007.www2.hp.com/portal/download/files/unprot/Itanium/slit.pdf */ void acpi_create_slit(acpi_slit_t *slit, unsigned long (*acpi_fill_slit)(unsigned long current)) |