tpm: Move tpm_tis_show_buffer to tpm_util.c

Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Message-Id: <20200121152935.649898-2-stefanb@linux.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

4 files changed, 33 insertions, 29 deletions

diff --git a/hw/tpm/tpm_tis.c b/hw/tpm/tpm_tis.c
index 5362df2..31facb8 100644
--- a/hw/tpm/tpm_tis.c
+++ b/hw/tpm/tpm_tis.c
@@ -107,30 +107,6 @@ static uint8_t tpm_tis_locality_from_addr(hwaddr addr)
     return (uint8_t)((addr >> TPM_TIS_LOCALITY_SHIFT) & 0x7);
 }
 
-static void tpm_tis_show_buffer(const unsigned char *buffer,
-                                size_t buffer_size, const char *string)
-{
-    size_t len, i;
-    char *line_buffer, *p;
-
-    len = MIN(tpm_cmd_get_size(buffer), buffer_size);
-
-    /*
-     * allocate enough room for 3 chars per buffer entry plus a
-     * newline after every 16 chars and a final null terminator.
-     */
-    line_buffer = g_malloc(len * 3 + (len / 16) + 1);
-
-    for (i = 0, p = line_buffer; i < len; i++) {
-        if (i && !(i % 16)) {
-            p += sprintf(p, "\n");
-        }
-        p += sprintf(p, "%.2X ", buffer[i]);
-    }
-    trace_tpm_tis_show_buffer(string, len, line_buffer);
-
-    g_free(line_buffer);
-}
 
 /*
  * Set the given flags in the STS register by clearing the register but
@@ -156,8 +132,8 @@ static void tpm_tis_sts_set(TPMLocality *l, uint32_t flags)
  */
 static void tpm_tis_tpm_send(TPMState *s, uint8_t locty)
 {
-    if (trace_event_get_state_backends(TRACE_TPM_TIS_SHOW_BUFFER)) {
-        tpm_tis_show_buffer(s->buffer, s->be_buffer_size, "To TPM");
+    if (trace_event_get_state_backends(TRACE_TPM_UTIL_SHOW_BUFFER)) {
+        tpm_util_show_buffer(s->buffer, s->be_buffer_size, "To TPM");
     }
 
     /*
@@ -325,8 +301,8 @@ static void tpm_tis_request_completed(TPMIf *ti, int ret)
     s->loc[locty].state = TPM_TIS_STATE_COMPLETION;
     s->rw_offset = 0;
 
-    if (trace_event_get_state_backends(TRACE_TPM_TIS_SHOW_BUFFER)) {
-        tpm_tis_show_buffer(s->buffer, s->be_buffer_size, "From TPM");
+    if (trace_event_get_state_backends(TRACE_TPM_UTIL_SHOW_BUFFER)) {
+        tpm_util_show_buffer(s->buffer, s->be_buffer_size, "From TPM");
     }
 
     if (TPM_TIS_IS_VALID_LOCTY(s->next_locty)) {
diff --git a/hw/tpm/tpm_util.c b/hw/tpm/tpm_util.c
index 62b091f..c0a0f3d 100644
--- a/hw/tpm/tpm_util.c
+++ b/hw/tpm/tpm_util.c
@@ -350,3 +350,28 @@ void tpm_sized_buffer_reset(TPMSizedBuffer *tsb)
     tsb->buffer = NULL;
     tsb->size = 0;
 }
+
+void tpm_util_show_buffer(const unsigned char *buffer,
+                          size_t buffer_size, const char *string)
+{
+    size_t len, i;
+    char *line_buffer, *p;
+
+    len = MIN(tpm_cmd_get_size(buffer), buffer_size);
+
+    /*
+     * allocate enough room for 3 chars per buffer entry plus a
+     * newline after every 16 chars and a final null terminator.
+     */
+    line_buffer = g_malloc(len * 3 + (len / 16) + 1);
+
+    for (i = 0, p = line_buffer; i < len; i++) {
+        if (i && !(i % 16)) {
+            p += sprintf(p, "\n");
+        }
+        p += sprintf(p, "%.2X ", buffer[i]);
+    }
+    trace_tpm_util_show_buffer(string, len, line_buffer);
+
+    g_free(line_buffer);
+}
diff --git a/hw/tpm/tpm_util.h b/hw/tpm/tpm_util.h
index f397ac2..7889081 100644
--- a/hw/tpm/tpm_util.h
+++ b/hw/tpm/tpm_util.h
@@ -79,4 +79,7 @@ typedef struct TPMSizedBuffer {
 
 void tpm_sized_buffer_reset(TPMSizedBuffer *tsb);
 
+void tpm_util_show_buffer(const unsigned char *buffer,
+                          size_t buffer_size, const char *string);
+
 #endif /* TPM_TPM_UTIL_H */
diff --git a/hw/tpm/trace-events b/hw/tpm/trace-events
index 89804bc..357c9e9 100644
--- a/hw/tpm/trace-events
+++ b/hw/tpm/trace-events
@@ -14,6 +14,7 @@ tpm_util_get_buffer_size_len(uint32_t len, size_t expected) "tpm_resp->len = %u,
 tpm_util_get_buffer_size_hdr_len2(uint32_t len, size_t expected) "tpm2_resp->hdr.len = %u, expected = %zu"
 tpm_util_get_buffer_size_len2(uint32_t len, size_t expected) "tpm2_resp->len = %u, expected = %zu"
 tpm_util_get_buffer_size(size_t len) "buffersize of device: %zu"
+tpm_util_show_buffer(const char *direction, size_t len, const char *buf) "direction: %s len: %zu\n%s"
 
 # tpm_emulator.c
 tpm_emulator_set_locality(uint8_t locty) "setting locality to %d"
@@ -36,7 +37,6 @@ tpm_emulator_pre_save(void) ""
 tpm_emulator_inst_init(void) ""
 
 # tpm_tis.c
-tpm_tis_show_buffer(const char *direction, size_t len, const char *buf) "direction: %s len: %zu\nbuf: %s"
 tpm_tis_raise_irq(uint32_t irqmask) "Raising IRQ for flag 0x%08x"
 tpm_tis_new_active_locality(uint8_t locty) "Active locality is now %d"
 tpm_tis_abort(uint8_t locty) "New active locality is %d"