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tpm: add TPMBackendCmd to hold the request state

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This simplifies a bit locality handling, and argument passing, and
could pave the way to queuing requests (if that makes sense).

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
This commit is contained in:
Marc-André Lureau 2017-10-10 00:55:55 +02:00 • committed by Stefan Berger
parent d1fd6b563d
commit 0e43b7e61c
6 changed files with 50 additions and 44 deletions
Download patch file Download diff file Expand all files Collapse all files

18
hw/tpm/tpm_tis.c
View file

@ -215,7 +215,15 @@ static void tpm_tis_tpm_send(TPMState *s, uint8_t locty)
*/
tis->loc[locty].state = TPM_TIS_STATE_EXECUTION;
tpm_backend_deliver_request(s->be_driver);
s->cmd = (TPMBackendCmd) {
.locty = locty,
.in = s->locty_data->w_buffer.buffer,
.in_len = s->locty_data->w_offset,
.out = s->locty_data->r_buffer.buffer,
.out_len = s->locty_data->r_buffer.size
};
tpm_backend_deliver_request(s->be_driver, &s->cmd);
}
/* raise an interrupt if allowed */
@ -352,7 +360,7 @@ static void tpm_tis_receive_bh(void *opaque)
{
TPMState *s = opaque;
TPMTISEmuState *tis = &s->s.tis;
uint8_t locty = s->locty_number;
uint8_t locty = s->cmd.locty;
tpm_tis_sts_set(&tis->loc[locty],
TPM_TIS_STS_VALID | TPM_TIS_STS_DATA_AVAILABLE);
@ -371,11 +379,11 @@ static void tpm_tis_receive_bh(void *opaque)
/*
* Callback from the TPM to indicate that the response was received.
*/
static void tpm_tis_receive_cb(TPMState *s,
bool is_selftest_done)
static void tpm_tis_receive_cb(TPMState *s)
{
TPMTISEmuState *tis = &s->s.tis;
uint8_t locty = s->locty_number;
bool is_selftest_done = s->cmd.selftest_done;
uint8_t locty = s->cmd.locty;
uint8_t l;
if (is_selftest_done) {