[coreboot-gerrit] New patch to review for coreboot: ACPI: Add functions for DMAR I/O-APIC and HPET entries
Nico Huber (nico.h@gmx.de)
gerrit at coreboot.org
Mon Oct 26 15:43:04 CET 2015
Nico Huber (nico.h at gmx.de) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/12192
-gerrit
commit f10a566faf6fe2edec4736c29233ecbf06391da8
Author: Nico Huber <nico.huber at secunet.com>
Date: Mon Oct 26 12:03:54 2015 +0100
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 at secunet.com>
---
src/arch/x86/acpi.c | 41 ++++++++++++++++++++++++++++++++--------
src/arch/x86/include/arch/acpi.h | 10 ++++++++--
2 files changed, 41 insertions(+), 10 deletions(-)
diff --git a/src/arch/x86/acpi.c b/src/arch/x86/acpi.c
index 1570dc8..55995c9 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))
diff --git a/src/arch/x86/include/arch/acpi.h b/src/arch/x86/include/arch/acpi.h
index eff3666..0fa64f3 100644
--- a/src/arch/x86/include/arch/acpi.h
+++ b/src/arch/x86/include/arch/acpi.h
@@ -557,8 +557,14 @@ void acpi_create_dmar(acpi_dmar_t *dmar, enum dmar_flags flags,
unsigned long acpi_create_dmar_drhd(unsigned long current, u8 flags,
u16 segment, u32 bar);
void acpi_dmar_drhd_fixup(unsigned long base, unsigned long current);
-unsigned long acpi_create_dmar_drhd_ds_pci(unsigned long current, u8 segment,
- u8 dev, u8 fn);
+unsigned long acpi_create_dmar_drhd_ds_pci(unsigned long current,
+ u8 bus, u8 dev, u8 fn);
+unsigned long acpi_create_dmar_drhd_ds_ioapic(unsigned long current,
+ u8 enumeration_id,
+ u8 bus, u8 dev, u8 fn);
+unsigned long acpi_create_dmar_drhd_ds_msi_hpet(unsigned long current,
+ u8 enumeration_id,
+ u8 bus, u8 dev, u8 fn);
void acpi_write_hest(acpi_hest_t *hest,
unsigned long (*acpi_fill_hest)(acpi_hest_t *hest));
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