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authorArthur Heymans <arthur@aheymans.xyz>2020-11-12 21:07:13 +0100
committerArthur Heymans <arthur@aheymans.xyz>2020-11-20 10:18:12 +0000
commita1f65bed10d41e41c684cd5e109b9883560e36f2 (patch)
tree6239883f9c73551c374b30c591acfd2b7ddb8b96 /src/soc/intel/common
parent695dd2977bb04024333d52bf561f67a5678845d9 (diff)
downloadcoreboot-a1f65bed10d41e41c684cd5e109b9883560e36f2.tar.xz
soc/intel/common/block/p2sb: Add ioapic BDF functions
This allows to get/set the IOAPIC bus device function. Change-Id: Ib5bb409efbcbc5729cf0e996655c7ac3f6a78223 Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/c/coreboot/+/47534 Reviewed-by: Angel Pons <th3fanbus@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/soc/intel/common')
-rw-r--r--src/soc/intel/common/block/include/intelblocks/p2sb.h3
-rw-r--r--src/soc/intel/common/block/p2sb/p2sb.c19
2 files changed, 22 insertions, 0 deletions
diff --git a/src/soc/intel/common/block/include/intelblocks/p2sb.h b/src/soc/intel/common/block/include/intelblocks/p2sb.h
index 819b9403a3..436861c924 100644
--- a/src/soc/intel/common/block/include/intelblocks/p2sb.h
+++ b/src/soc/intel/common/block/include/intelblocks/p2sb.h
@@ -40,6 +40,9 @@ union p2sb_bdf {
union p2sb_bdf p2sb_get_hpet_bdf(void);
void p2sb_set_hpet_bdf(union p2sb_bdf bdf);
+union p2sb_bdf p2sb_get_ioapic_bdf(void);
+void p2sb_set_ioapic_bdf(union p2sb_bdf bdf);
+
/* SOC overrides */
/*
diff --git a/src/soc/intel/common/block/p2sb/p2sb.c b/src/soc/intel/common/block/p2sb/p2sb.c
index fd54a08dda..05bef2bc4e 100644
--- a/src/soc/intel/common/block/p2sb/p2sb.c
+++ b/src/soc/intel/common/block/p2sb/p2sb.c
@@ -73,6 +73,25 @@ void p2sb_set_hpet_bdf(union p2sb_bdf bdf)
pci_write_config16(PCH_DEV_P2SB, PCH_P2SB_HBDF, bdf.raw);
}
+union p2sb_bdf p2sb_get_ioapic_bdf(void)
+{
+ const bool was_hidden = p2sb_is_hidden();
+ if (was_hidden)
+ p2sb_unhide();
+
+ union p2sb_bdf bdf = { .raw = pci_read_config16(PCH_DEV_P2SB, PCH_P2SB_IBDF) };
+
+ if (was_hidden)
+ p2sb_hide();
+
+ return bdf;
+}
+
+void p2sb_set_ioapic_bdf(union p2sb_bdf bdf)
+{
+ pci_write_config16(PCH_DEV_P2SB, PCH_P2SB_IBDF, bdf.raw);
+}
+
static void p2sb_set_hide_bit(int hide)
{
const uint16_t reg = PCH_P2SB_E0 + 1;