projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 31b3c9d7 | 1 | #include <linux/init.h> |
| 87e4baac | 2 | |
| 31b3c9d7 | 3 | #include <asm/x86_init.h> |
| ab6ec39a | 4 | #include <asm/apic.h> |
| ab6ec39a | 5 | #include <asm/xen/hypercall.h> |
| 31b3c9d7 | 6 | |
| 87e4baac IM |
7 | #include <xen/xen.h> |
| 8 | #include <xen/interface/physdev.h> | |
| b8b0f559 | 9 | #include "xen-ops.h" |
| 87e4baac | 10 | |
| b8b0f559 | 11 | static unsigned int xen_io_apic_read(unsigned apic, unsigned reg) |
| 31b3c9d7 | 12 | { |
| ab6ec39a LM |
13 | struct physdev_apic apic_op; |
| 14 | int ret; | |
| 15 | ||
| 16 | apic_op.apic_physbase = mpc_ioapic_addr(apic); | |
| 17 | apic_op.reg = reg; | |
| 18 | ret = HYPERVISOR_physdev_op(PHYSDEVOP_apic_read, &apic_op); | |
| 19 | if (!ret) | |
| 20 | return apic_op.value; | |
| 21 | ||
| 22 | /* fallback to return an emulated IO_APIC values */ | |
| 31b3c9d7 KRW |
23 | if (reg == 0x1) |
| 24 | return 0x00170020; | |
| 25 | else if (reg == 0x0) | |
| 26 | return apic << 24; | |
| 27 | ||
| 28 | return 0xfd; | |
| 29 | } | |
| 30 | ||
| 31 | void __init xen_init_apic(void) | |
| 32 | { | |
| 33 | x86_io_apic_ops.read = xen_io_apic_read; | |
| 34 | } |