[PATCH v7 15/17] hw/sd/sdcard: Correctly display the command name in trace events

["Philippe Mathieu-Daudé" <f4bug@amsat.org>]

Some ACMD were incorrectly displayed. Fix by remembering if we
are processing a ACMD (with current_cmd_is_acmd) and add the
sd_current_cmd_name() helper, which display to correct name
regardless it is a CMD or ACMD.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 hw/sd/sd.c | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

diff --git a/hw/sd/sd.c b/hw/sd/sd.c
index 3e9faa8add..eb549a52e1 100644
--- a/hw/sd/sd.c
+++ b/hw/sd/sd.c
@@ -125,6 +125,7 @@ struct SDState {
     uint8_t pwd[16];
     uint32_t pwd_len;
     uint8_t function_group[6];
+    bool current_cmd_is_acmd;
     uint8_t current_cmd;
     /* True if we will handle the next command as an ACMD. Note that this does
      * *not* track the APP_CMD status bit!
@@ -1718,6 +1719,8 @@ int sd_do_command(SDState *sd, SDRequest *req,
                       req->cmd);
         req->cmd &= 0x3f;
     }
+    sd->current_cmd = req->cmd;
+    sd->current_cmd_is_acmd = sd->expecting_acmd;
 
     if (sd->card_status & CARD_IS_LOCKED) {
         if (!cmd_valid_while_locked(sd, req->cmd)) {
@@ -1745,7 +1748,6 @@ int sd_do_command(SDState *sd, SDRequest *req,
         /* Valid command, we can update the 'state before command' bits.
          * (Do this now so they appear in r1 responses.)
          */
-        sd->current_cmd = req->cmd;
         sd->card_status &= ~CURRENT_STATE;
         sd->card_status |= (last_state << 9);
     }
@@ -1806,6 +1808,15 @@ send_response:
     return rsplen;
 }
 
+static const char *sd_current_cmd_name(SDState *sd)
+{
+    if (sd->current_cmd_is_acmd) {
+        return sd_acmd_name(sd->current_cmd);
+    } else {
+        return sd_cmd_name(sd->current_cmd);
+    }
+}
+
 static void sd_blk_read(SDState *sd, uint64_t addr, uint32_t len)
 {
     trace_sdcard_read_block(addr, len);
@@ -1844,7 +1855,7 @@ void sd_write_data(SDState *sd, uint8_t value)
         return;
 
     trace_sdcard_write_data(sd->proto_name,
-                            sd_acmd_name(sd->current_cmd),
+                            sd_current_cmd_name(sd),
                             sd->current_cmd, value);
     switch (sd->current_cmd) {
     case 24:	/* CMD24:  WRITE_SINGLE_BLOCK */
@@ -1998,7 +2009,7 @@ uint8_t sd_read_data(SDState *sd)
     io_len = (sd->ocr & (1 << 30)) ? HWBLOCK_SIZE : sd->blk_len;
 
     trace_sdcard_read_data(sd->proto_name,
-                           sd_acmd_name(sd->current_cmd),
+                           sd_current_cmd_name(sd),
                            sd->current_cmd, io_len);
     switch (sd->current_cmd) {
     case 6:	/* CMD6:   SWITCH_FUNCTION */
-- 
2.21.3