Werner Zeh (werner.zeh@siemens.com) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/15911
-gerrit
commit 32d9c61b49e34897b225aff5791b6770f151a598 Author: Werner Zeh werner.zeh@siemens.com Date: Wed Jul 27 06:56:36 2016 +0200
ACPI: Add code to include ATSR structure in DMAR table
When creating DMAR table one needs to report all PCI root ports in the scope of a ATSR structure. Add code to create this ATS reporting 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 --- src/arch/x86/acpi.c | 20 ++++++++++++++++++++ src/arch/x86/include/arch/acpi.h | 12 ++++++++++++ 2 files changed, 32 insertions(+)
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 @@ 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) { 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 @@ typedef struct dmar_entry { 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 @@ void acpi_create_dmar(acpi_dmar_t *dmar, enum dmar_flags flags, 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,
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Werner Zeh