arch/x86/acpi: Add DMAR RMRR helper functions
Add DMAR RMRR table entry and helper functions, using the existing
DRHD functions as a model. As the DRHD device scope (DS) functions
aren't DRHD-specific, genericize them to be used with RMRR tables as
well. Correct DRHD bar size to match table entry in creator function,
as noted in comments from patchset below.
Adapted from/supersedes https://review.coreboot.org/25445
Change-Id: I912b1d7244ca4dd911bb6629533d453b1b4a06be
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/27269
Reviewed-by: Youness Alaoui <snifikino@gmail.com>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Jay Talbott <JayTalbott@sysproconsulting.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/arch/x86/acpi.c b/src/arch/x86/acpi.c
index 8b6b2c1..60d2879 100644
--- a/src/arch/x86/acpi.c
+++ b/src/arch/x86/acpi.c
@@ -449,7 +449,7 @@
}
unsigned long acpi_create_dmar_drhd(unsigned long current, u8 flags,
- u16 segment, u32 bar)
+ u16 segment, u64 bar)
{
dmar_entry_t *drhd = (dmar_entry_t *)current;
memset(drhd, 0, sizeof(*drhd));
@@ -462,6 +462,20 @@
return drhd->length;
}
+unsigned long acpi_create_dmar_rmrr(unsigned long current, u16 segment,
+ u64 bar, u64 limit)
+{
+ dmar_rmrr_entry_t *rmrr = (dmar_rmrr_entry_t *)current;
+ memset(rmrr, 0, sizeof(*rmrr));
+ rmrr->type = DMAR_RMRR;
+ rmrr->length = sizeof(*rmrr); /* will be fixed up later */
+ rmrr->segment = segment;
+ rmrr->bar = bar;
+ rmrr->limit = limit;
+
+ return rmrr->length;
+}
+
unsigned long acpi_create_dmar_atsr(unsigned long current, u8 flags,
u16 segment)
{
@@ -481,13 +495,19 @@
drhd->length = current - base;
}
+void acpi_dmar_rmrr_fixup(unsigned long base, unsigned long current)
+{
+ dmar_rmrr_entry_t *rmrr = (dmar_rmrr_entry_t *)base;
+ rmrr->length = current - base;
+}
+
void acpi_dmar_atsr_fixup(unsigned long base, unsigned long current)
{
dmar_atsr_entry_t *atsr = (dmar_atsr_entry_t *)base;
atsr->length = current - base;
}
-static unsigned long acpi_create_dmar_drhd_ds(unsigned long current,
+static unsigned long acpi_create_dmar_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 */
@@ -505,31 +525,31 @@
return ds->length;
}
-unsigned long acpi_create_dmar_drhd_ds_pci_br(unsigned long current, u8 bus,
+unsigned long acpi_create_dmar_ds_pci_br(unsigned long current, u8 bus,
u8 dev, u8 fn)
{
- return acpi_create_dmar_drhd_ds(current,
+ return acpi_create_dmar_ds(current,
SCOPE_PCI_SUB, 0, bus, dev, fn);
}
-unsigned long acpi_create_dmar_drhd_ds_pci(unsigned long current, u8 bus,
+unsigned long acpi_create_dmar_ds_pci(unsigned long current, u8 bus,
u8 dev, u8 fn)
{
- return acpi_create_dmar_drhd_ds(current,
+ return acpi_create_dmar_ds(current,
SCOPE_PCI_ENDPOINT, 0, bus, dev, fn);
}
-unsigned long acpi_create_dmar_drhd_ds_ioapic(unsigned long current,
+unsigned long acpi_create_dmar_ds_ioapic(unsigned long current,
u8 enumeration_id, u8 bus, u8 dev, u8 fn)
{
- return acpi_create_dmar_drhd_ds(current,
+ return acpi_create_dmar_ds(current,
SCOPE_IOAPIC, enumeration_id, bus, dev, fn);
}
-unsigned long acpi_create_dmar_drhd_ds_msi_hpet(unsigned long current,
+unsigned long acpi_create_dmar_ds_msi_hpet(unsigned long current,
u8 enumeration_id, u8 bus, u8 dev, u8 fn)
{
- return acpi_create_dmar_drhd_ds(current,
+ return acpi_create_dmar_ds(current,
SCOPE_MSI_HPET, enumeration_id, bus, dev, fn);
}