diff options
| author | Werner Zeh <werner.zeh@siemens.com> | 2016-07-27 06:56:36 +0200 |
|---|---|---|
| committer | Werner Zeh <werner.zeh@siemens.com> | 2016-08-03 06:23:11 +0200 |
| commit | d4d76959c0851b0e11fcd9732676c36caab61114 (patch) | |
| tree | eadecae3622b499c27280dac34b1a78be59891b2 /src/arch/x86/acpi.c | |
| parent | b0afbad8e1da28fc5f4a8f655fd465480f879a48 (diff) | |
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>
Diffstat (limited to 'src/arch/x86/acpi.c')
| -rw-r--r-- | src/arch/x86/acpi.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/src/arch/x86/acpi.c b/src/arch/x86/acpi.c index 366129734f..7d78f04efc 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 @@ unsigned long acpi_create_dmar_drhd(unsigned long current, u8 flags, 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) { |