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devices: tpm: failure to deliver request is considered fatal

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Signed-off-by: Wei Liu <liuwe@microsoft.com>
This commit is contained in:
Wei Liu 2023-01-27 12:12:20 +00:00 committed by Rob Bradford
parent 938c16f2b2
commit 2d2f356d94
1 changed files with 4 additions and 5 deletions
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9
devices/src/tpm.rs
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@ -13,7 +13,6 @@ use std::sync::{Arc, Barrier};
use thiserror::Error; use thiserror::Error;
use tpm::emulator::{BackendCmd, Emulator}; use tpm::emulator::{BackendCmd, Emulator};
use tpm::TPM_CRB_BUFFER_MAX; use tpm::TPM_CRB_BUFFER_MAX;
use tpm::TPM_SUCCESS;
use vm_device::BusDevice; use vm_device::BusDevice;
#[derive(Error, Debug)] #[derive(Error, Debug)]
@ -247,9 +246,9 @@ impl Tpm {
) )
} }
fn request_completed(&mut self, result: isize) { fn request_completed(&mut self, success: bool) {
self.regs[CRB_CTRL_START as usize] = !CRB_START_INVOKE; self.regs[CRB_CTRL_START as usize] = !CRB_START_INVOKE;
if result != 0 { if !success {
set_reg_field( set_reg_field(
&mut self.regs, &mut self.regs,
CrbRegister::CtrlSts(CtrlStsFields::TpmSts), CrbRegister::CtrlSts(CtrlStsFields::TpmSts),
@ -476,9 +475,9 @@ impl BusDevice for Tpm {
input_len: cmp::min(self.data_buff_len, TPM_CRB_BUFFER_MAX), input_len: cmp::min(self.data_buff_len, TPM_CRB_BUFFER_MAX),
}; };
let _ = self.emulator.deliver_request(&mut cmd); let status = self.emulator.deliver_request(&mut cmd).is_ok();
self.request_completed(TPM_SUCCESS as isize); self.request_completed(status);
} }
} }
CRB_LOC_CTRL => { CRB_LOC_CTRL => {