ACPI: Add code to include ATSR structure in DMAR table
DMAR tables can contain so called "Address Translation Service Reporting"
(ATSR) structure. It is applicable for platforms that support
Device-TLBs and describe PCI root ports that have this ability.
Add code to create this ATSR structure.
In addition, a function to fix up the size of the ATSR
structure is added as this is a new type and using the function
acpi_dmar_drhd_fixup() can lead to confusion.
Change-Id: Idc3f6025f597048151f0fd5ea6be04843041e1ab
Signed-off-by: Werner Zeh <werner.zeh@siemens.com>
Reviewed-on: https://review.coreboot.org/15911
Tested-by: build bot (Jenkins)
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
diff --git a/src/arch/x86/acpi.c b/src/arch/x86/acpi.c
index 3661297..7d78f04 100644
--- a/src/arch/x86/acpi.c
+++ b/src/arch/x86/acpi.c
@@ -7,6 +7,7 @@
* Copyright (C) 2004 SUSE LINUX AG
* Copyright (C) 2005-2009 coresystems GmbH
* Copyright (C) 2015 Timothy Pearson <tpearson@raptorengineeringinc.com>, Raptor Engineering
+ * Copyright (C) 2016 Siemens AG
*
* ACPI FADT, FACS, and DSDT table support added by
* Nick Barker <nick.barker9@btinternet.com>, and those portions
@@ -433,12 +434,31 @@
return drhd->length;
}
+unsigned long acpi_create_dmar_atsr(unsigned long current, u8 flags,
+ u16 segment)
+{
+ dmar_atsr_entry_t *atsr = (dmar_atsr_entry_t *)current;
+ memset(atsr, 0, sizeof(*atsr));
+ atsr->type = DMAR_ATSR;
+ atsr->length = sizeof(*atsr); /* will be fixed up later */
+ atsr->flags = flags;
+ atsr->segment = segment;
+
+ return atsr->length;
+}
+
void acpi_dmar_drhd_fixup(unsigned long base, unsigned long current)
{
dmar_entry_t *drhd = (dmar_entry_t *)base;
drhd->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,
enum dev_scope_type type, u8 enumeration_id, u8 bus, u8 dev, u8 fn)
{
diff --git a/src/arch/x86/include/arch/acpi.h b/src/arch/x86/include/arch/acpi.h
index dfbffb3..b27dfff 100644
--- a/src/arch/x86/include/arch/acpi.h
+++ b/src/arch/x86/include/arch/acpi.h
@@ -5,6 +5,7 @@
* Copyright (C) 2004 Nick Barker
* Copyright (C) 2008-2009 coresystems GmbH
* Copyright (C) 2015 Timothy Pearson <tpearson@raptorengineeringinc.com>, Raptor Engineering
+ * Copyright (C) 2016 Siemens AG
* (Written by Stefan Reinauer <stepan@coresystems.de>)
*
* This program is free software; you can redistribute it and/or modify
@@ -285,6 +286,14 @@
u64 bar;
} __attribute__ ((packed)) dmar_entry_t;
+typedef struct dmar_atsr_entry {
+ u16 type;
+ u16 length;
+ u8 flags;
+ u8 reserved;
+ u16 segment;
+} __attribute__ ((packed)) dmar_atsr_entry_t;
+
/* DMAR (DMA Remapping Reporting Structure) */
typedef struct acpi_dmar {
struct acpi_table_header header;
@@ -607,7 +616,10 @@
unsigned long (*acpi_fill_dmar) (unsigned long));
unsigned long acpi_create_dmar_drhd(unsigned long current, u8 flags,
u16 segment, u32 bar);
+unsigned long acpi_create_dmar_atsr(unsigned long current, u8 flags,
+ u16 segment);
void acpi_dmar_drhd_fixup(unsigned long base, unsigned long current);
+void acpi_dmar_atsr_fixup(unsigned long base, unsigned long current);
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,