1 files changed, 59 insertions, 2 deletions

diff --git a/hw/sd/core.c b/hw/sd/core.c
index 295dc44ab7..3c6eae6c88 100644
--- a/hw/sd/core.c
+++ b/hw/sd/core.c
@@ -23,6 +23,12 @@
 #include "hw/qdev-core.h"
 #include "sysemu/block-backend.h"
 #include "hw/sd/sd.h"
+#include "trace.h"
+
+static inline const char *sdbus_name(SDBus *sdbus)
+{
+    return sdbus->qbus.name;
+}
 
 static SDState *get_card(SDBus *sdbus)
 {
@@ -35,10 +41,58 @@ static SDState *get_card(SDBus *sdbus)
     return SD_CARD(kid->child);
 }
 
+uint8_t sdbus_get_dat_lines(SDBus *sdbus)
+{
+    SDState *slave = get_card(sdbus);
+    uint8_t dat_lines = 0b1111; /* 4 bit bus width */
+
+    if (slave) {
+        SDCardClass *sc = SD_CARD_GET_CLASS(slave);
+
+        if (sc->get_dat_lines) {
+            dat_lines = sc->get_dat_lines(slave);
+        }
+    }
+    trace_sdbus_get_dat_lines(sdbus_name(sdbus), dat_lines);
+
+    return dat_lines;
+}
+
+bool sdbus_get_cmd_line(SDBus *sdbus)
+{
+    SDState *slave = get_card(sdbus);
+    bool cmd_line = true;
+
+    if (slave) {
+        SDCardClass *sc = SD_CARD_GET_CLASS(slave);
+
+        if (sc->get_cmd_line) {
+            cmd_line = sc->get_cmd_line(slave);
+        }
+    }
+    trace_sdbus_get_cmd_line(sdbus_name(sdbus), cmd_line);
+
+    return cmd_line;
+}
+
+void sdbus_set_voltage(SDBus *sdbus, uint16_t millivolts)
+{
+    SDState *card = get_card(sdbus);
+
+    trace_sdbus_set_voltage(sdbus_name(sdbus), millivolts);
+    if (card) {
+        SDCardClass *sc = SD_CARD_GET_CLASS(card);
+
+        assert(sc->set_voltage);
+        sc->set_voltage(card, millivolts);
+    }
+}
+
 int sdbus_do_command(SDBus *sdbus, SDRequest *req, uint8_t *response)
 {
     SDState *card = get_card(sdbus);
 
+    trace_sdbus_command(sdbus_name(sdbus), req->cmd, req->arg, req->crc);
     if (card) {
         SDCardClass *sc = SD_CARD_GET_CLASS(card);
 
@@ -52,6 +106,7 @@ void sdbus_write_data(SDBus *sdbus, uint8_t value)
 {
     SDState *card = get_card(sdbus);
 
+    trace_sdbus_write(sdbus_name(sdbus), value);
     if (card) {
         SDCardClass *sc = SD_CARD_GET_CLASS(card);
 
@@ -62,14 +117,16 @@ void sdbus_write_data(SDBus *sdbus, uint8_t value)
 uint8_t sdbus_read_data(SDBus *sdbus)
 {
     SDState *card = get_card(sdbus);
+    uint8_t value = 0;
 
     if (card) {
         SDCardClass *sc = SD_CARD_GET_CLASS(card);
 
-        return sc->read_data(card);
+        value = sc->read_data(card);
     }
+    trace_sdbus_read(sdbus_name(sdbus), value);
 
-    return 0;
+    return value;
 }
 
 bool sdbus_data_ready(SDBus *sdbus)