qtest: Move tpm_util_tis_transmit() into tpm-tis-utils.c and rename it

To be able to remove tpm_tis_base_addr from test cases that do not really
need it move the tpm_util_tis_transmit() function into tpm-tis-utils.c and
rename it to tpm_tis_transmit().

Fix a locality parameter in a test case on the way.

Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Ninad Palsule <ninad@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20230331173051.3857801-3-stefanb@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>

1 files changed, 46 insertions, 1 deletions

diff --git a/tests/qtest/tpm-tis-util.c b/tests/qtest/tpm-tis-util.c
index 939893bf01..728cd3e065 100644
--- a/tests/qtest/tpm-tis-util.c
+++ b/tests/qtest/tpm-tis-util.c
@@ -52,7 +52,7 @@ void tpm_tis_test_check_localities(const void *data)
     uint32_t rid;
 
     for (locty = 0; locty < TPM_TIS_NUM_LOCALITIES; locty++) {
-        access = readb(TIS_REG(0, TPM_TIS_REG_ACCESS));
+        access = readb(TIS_REG(locty, TPM_TIS_REG_ACCESS));
         g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
                                     TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
 
@@ -449,3 +449,48 @@ void tpm_tis_test_check_transmit(const void *data)
     writeb(TIS_REG(0, TPM_TIS_REG_ACCESS), TPM_TIS_ACCESS_ACTIVE_LOCALITY);
     access = readb(TIS_REG(0, TPM_TIS_REG_ACCESS));
 }
+
+void tpm_tis_transfer(QTestState *s,
+                      const unsigned char *req, size_t req_size,
+                      unsigned char *rsp, size_t rsp_size)
+{
+    uint32_t sts;
+    uint16_t bcount;
+    size_t i;
+
+    /* request use of locality 0 */
+    qtest_writeb(s, TIS_REG(0, TPM_TIS_REG_ACCESS), TPM_TIS_ACCESS_REQUEST_USE);
+    qtest_writel(s, TIS_REG(0, TPM_TIS_REG_STS), TPM_TIS_STS_COMMAND_READY);
+
+    sts = qtest_readl(s, TIS_REG(0, TPM_TIS_REG_STS));
+    bcount = (sts >> 8) & 0xffff;
+    g_assert_cmpint(bcount, >=, req_size);
+
+    /* transmit command */
+    for (i = 0; i < req_size; i++) {
+        qtest_writeb(s, TIS_REG(0, TPM_TIS_REG_DATA_FIFO), req[i]);
+    }
+
+    /* start processing */
+    qtest_writeb(s, TIS_REG(0, TPM_TIS_REG_STS), TPM_TIS_STS_TPM_GO);
+
+    uint64_t end_time = g_get_monotonic_time() + 50 * G_TIME_SPAN_SECOND;
+    do {
+        sts = qtest_readl(s, TIS_REG(0, TPM_TIS_REG_STS));
+        if ((sts & TPM_TIS_STS_DATA_AVAILABLE) != 0) {
+            break;
+        }
+    } while (g_get_monotonic_time() < end_time);
+
+    sts = qtest_readl(s, TIS_REG(0, TPM_TIS_REG_STS));
+    bcount = (sts >> 8) & 0xffff;
+
+    memset(rsp, 0, rsp_size);
+    for (i = 0; i < bcount; i++) {
+        rsp[i] = qtest_readb(s, TIS_REG(0, TPM_TIS_REG_DATA_FIFO));
+    }
+
+    /* relinquish use of locality 0 */
+    qtest_writeb(s, TIS_REG(0, TPM_TIS_REG_ACCESS),
+                 TPM_TIS_ACCESS_ACTIVE_LOCALITY);
+}