static int pin_array_locked(struct nvmap_client *client,
struct nvmap_handle **h, int count)
{
int pinned;
int i;
int err = 0;
/* Flush deferred cache maintenance if needed */
for (pinned = 0; pinned < count; pinned++)
if (nvmap_find_cache_maint_op(client->dev, h[pinned]))
nvmap_cache_maint_ops_flush(client->dev, h[pinned]);
nvmap_mru_lock(client->share);
for (pinned = 0; pinned < count; pinned++) {
err = pin_locked(client, h[pinned]);
if (err)
break;
}
nvmap_mru_unlock(client->share);
if (err) {
/* unpin pinned handles */
for (i = 0; i < pinned; i++) {
/* inc ref counter, because
* handle_unpin decrements it */
nvmap_handle_get(h[i]);
/* unpin handles and free vm */
handle_unpin(client, h[i], true);
}
}
if (err && tegra_iovmm_get_max_free(client->share->iovmm) >=
client->iovm_limit) {
/* First attempt to pin in empty iovmm
* may still fail because of fragmentation caused by
* placing handles in MRU areas. After such failure
* all MRU gets cleaned and iovm space is freed.
*
* We have to do pinning again here since there might be is
* no more incoming pin_wait wakeup calls from unpin
* operations */
nvmap_mru_lock(client->share);
for (pinned = 0; pinned < count; pinned++) {
err = pin_locked(client, h[pinned]);
if (err)
break;
}
nvmap_mru_unlock(client->share);
if (err) {
pr_err("Pinning in empty iovmm failed!!!\n");
BUG_ON(1);
}
}
return err;
}
static int wait_pin_locked(struct nvmap_client *client, struct nvmap_handle *h)
{
int ret = 0;
ret = pin_locked(client, h);
if (ret) {
ret = wait_event_interruptible(client->share->pin_wait,
!pin_locked(client, h));
}
return ret ? -EINTR : 0;
}
CK_RV
SC_SetPIN(ST_SESSION_HANDLE sSession,
CK_CHAR_PTR pOldPin,
CK_ULONG ulOldLen,
CK_CHAR_PTR pNewPin,
CK_ULONG ulNewLen)
{
SESSION * sess = NULL;
CK_RV rc = CKR_OK;
SESS_SET
if (st_Initialized() == FALSE) {
rc = CKR_CRYPTOKI_NOT_INITIALIZED;
goto done;
}
sess = session_mgr_find(hSession);
if (! sess) {
rc = CKR_SESSION_HANDLE_INVALID;
goto done;
}
if (pin_locked(&sess->session_info,
nv_token_data->token_info.flags) == TRUE) {
rc = CKR_PIN_LOCKED;
goto done;
}
rc = token_specific.t_set_pin(sSession, pOldPin,
ulOldLen, pNewPin, ulNewLen);
done:
if (debugfile) {
stlogit2(debugfile, "% - 25s: session = %08x\n",
"C_SetPin", rc, hSession);
}
return (rc);
}
CK_RV
SC_InitPIN(
ST_SESSION_HANDLE sSession,
CK_CHAR_PTR pPin,
CK_ULONG ulPinLen)
{
SESSION * sess = NULL;
CK_RV rc = CKR_OK;
CK_FLAGS * flags = NULL;
SESS_SET
if (st_Initialized() == FALSE) {
rc = CKR_CRYPTOKI_NOT_INITIALIZED;
goto done;
}
if (! pPin) {
rc = CKR_ARGUMENTS_BAD;
goto done;
}
sess = session_mgr_find(hSession);
if (! sess) {
rc = CKR_SESSION_HANDLE_INVALID;
goto done;
}
if (pin_locked(&sess->session_info,
nv_token_data->token_info.flags) == TRUE) {
rc = CKR_PIN_LOCKED;
goto done;
}
if (sess->session_info.state != CKS_RW_SO_FUNCTIONS) {
rc = CKR_USER_NOT_LOGGED_IN;
goto done;
}
rc = token_specific.t_init_pin(sess->hContext, pPin, ulPinLen);
if (rc == CKR_OK) {
flags = &nv_token_data->token_info.flags;
*flags &= ~(CKF_USER_PIN_LOCKED |
CKF_USER_PIN_FINAL_TRY |
CKF_USER_PIN_COUNT_LOW);
rc = save_token_data(nv_token_data);
if (rc != CKR_OK) {
goto done;
}
}
done:
if (debugfile) {
stlogit2(debugfile, "% - 25s: session = %08x\n",
"C_InitPin", rc, hSession);
}
return (rc);
}
