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arch/x86/ioapic: Add get_ioapic_id() and get_ioapic_version()

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Change-Id: I4ad080653c9af94a4dc73d93ddc4c8c117a682b9
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/55282
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
This commit is contained in:
Kyösti Mälkki
2021-06-06 08:27:15 +03:00
parent 8997e7b5ae
commit 401ec98e06
4 changed files with 16 additions and 15 deletions
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2
src/arch/x86/include/arch/ioapic.h
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@@ -29,6 +29,8 @@
u32 io_apic_read(void *ioapic_base, u32 reg);
void io_apic_write(void *ioapic_base, u32 reg, u32 value);
void set_ioapic_id(void *ioapic_base, u8 ioapic_id);
u8 get_ioapic_id(void *ioapic_base);
u8 get_ioapic_version(void *ioapic_base);
void setup_ioapic(void *ioapic_base, u8 ioapic_id);
void clear_ioapic(void *ioapic_base);

10
src/arch/x86/ioapic.c
View File

@@ -109,6 +109,16 @@ void set_ioapic_id(void *ioapic_base, u8 ioapic_id)
}
u8 get_ioapic_id(void *ioapic_base)
{
return (io_apic_read(ioapic_base, 0x00) >> 24) & 0x0f;
}
u8 get_ioapic_version(void *ioapic_base)
{
return io_apic_read(ioapic_base, 0x01) & 0xff;
}
void setup_ioapic_helper(void *ioapic_base, u8 ioapic_id, bool irq_on_fsb,
bool enable_virtual_wire)
{