diff options
Diffstat (limited to 'src/soc/intel/common/block/p2sb/p2sb.c')
| -rw-r--r-- | src/soc/intel/common/block/p2sb/p2sb.c | 19 |
1 files changed, 19 insertions, 0 deletions
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; |