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| author | Keir Fraser <keir.fraser@citrix.com> | 2008-04-17 12:37:35 +0100 |
|---|---|---|
| committer | Keir Fraser <keir.fraser@citrix.com> | 2008-04-17 12:37:35 +0100 |
| commit | 29a3d669c7a4d4f504bbaeb911133e20d6971d85 (patch) | |
| tree | 2eb61cd8d4dbf2efdce08d81d8cfb52d5bc08675 /xen/include/asm-x86/hvm/vcpu.h | |
| parent | 74a02d2244983e2fb2ade724bddae332d263b04a (diff) | |
| download | xen-29a3d669c7a4d4f504bbaeb911133e20d6971d85.tar.gz xen-29a3d669c7a4d4f504bbaeb911133e20d6971d85.tar.bz2 xen-29a3d669c7a4d4f504bbaeb911133e20d6971d85.zip | |
x86, hvm: Allow emulation of 'multi-cycle' MMIO reads and writes,
which may require multiple round trips to the device model.
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
Diffstat (limited to 'xen/include/asm-x86/hvm/vcpu.h')
| -rw-r--r-- | xen/include/asm-x86/hvm/vcpu.h | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/xen/include/asm-x86/hvm/vcpu.h b/xen/include/asm-x86/hvm/vcpu.h index 6ff8de5fc4..fc43d5d20d 100644 --- a/xen/include/asm-x86/hvm/vcpu.h +++ b/xen/include/asm-x86/hvm/vcpu.h @@ -83,10 +83,16 @@ struct hvm_vcpu { */ unsigned long mmio_gva; unsigned long mmio_gpfn; - + /* Callback into x86_emulate when emulating FPU/MMX/XMM instructions. */ void (*fpu_exception_callback)(void *, struct cpu_user_regs *); void *fpu_exception_callback_arg; + /* We may read up to m128 as a number of device-model transactions. */ + paddr_t mmio_large_read_pa; + uint8_t mmio_large_read[16]; + unsigned int mmio_large_read_bytes; + /* We may write up to m128 as a number of device-model transactions. */ + paddr_t mmio_large_write_pa; + unsigned int mmio_large_write_bytes; }; #endif /* __ASM_X86_HVM_VCPU_H__ */ - |