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hw/sd/sdcard: Track last command used to help logging 

The command is selected on the I/O lines, and further
processing might be done on the DAT lines via the
sd_read_byte() and sd_write_byte() handlers. Since
these methods can't distinct between normal and APP
commands, keep the name of the current command in
the SDState and use it in the DAT handlers. This
fixes a bug that all normal commands were displayed
as APP commands.

Fixes: 2ed61fb57b ("sdcard: Display command name when tracing CMD/ACMD")
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Tested-by: Cédric Le Goater <clg@redhat.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Message-Id: <20240628070216.92609-4-philmd@linaro.org>
This commit is contained in:
Philippe Mathieu-Daudé 2024-06-14 01:44:28 +02:00
parent 6a414c0110
commit 702ff29c8f
1 changed files with 8 additions and 4 deletions
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12
hw/sd/sd.c
View File

@ -133,6 +133,7 @@ struct SDState {
uint32_t pwd_len;
uint8_t function_group[6];
uint8_t current_cmd;
const char *last_cmd_name;
/* True if we will handle the next command as an ACMD. Note that this does
* *not* track the APP_CMD status bit!
*/
@ -1154,12 +1155,13 @@ static sd_rsp_type_t sd_normal_command(SDState *sd, SDRequest req)
uint16_t rca;
uint64_t addr;
sd->last_cmd_name = sd_cmd_name(req.cmd);
/* CMD55 precedes an ACMD, so we are not interested in tracing it.
* However there is no ACMD55, so we want to trace this particular case.
*/
if (req.cmd != 55 || sd->expecting_acmd) {
trace_sdcard_normal_command(sd_proto(sd)->name,
sd_cmd_name(req.cmd), req.cmd,
sd->last_cmd_name, req.cmd,
req.arg, sd_state_name(sd->state));
}
@ -1620,7 +1622,8 @@ static sd_rsp_type_t sd_normal_command(SDState *sd, SDRequest req)
static sd_rsp_type_t sd_app_command(SDState *sd,
SDRequest req)
{
trace_sdcard_app_command(sd_proto(sd)->name, sd_acmd_name(req.cmd),
sd->last_cmd_name = sd_acmd_name(req.cmd);
trace_sdcard_app_command(sd_proto(sd)->name, sd->last_cmd_name,
req.cmd, req.arg, sd_state_name(sd->state));
sd->card_status |= APP_CMD;
@ -1913,7 +1916,7 @@ void sd_write_byte(SDState *sd, uint8_t value)
return;
trace_sdcard_write_data(sd_proto(sd)->name,
sd_acmd_name(sd->current_cmd),
sd->last_cmd_name,
sd->current_cmd, value);
switch (sd->current_cmd) {
case 24: /* CMD24: WRITE_SINGLE_BLOCK */
@ -2069,7 +2072,7 @@ uint8_t sd_read_byte(SDState *sd)
io_len = (sd->ocr & (1 << 30)) ? 512 : sd->blk_len;
trace_sdcard_read_data(sd_proto(sd)->name,
sd_acmd_name(sd->current_cmd),
sd->last_cmd_name,
sd->current_cmd, io_len);
switch (sd->current_cmd) {
case 6: /* CMD6: SWITCH_FUNCTION */
@ -2214,6 +2217,7 @@ static void sd_instance_init(Object *obj)
{
SDState *sd = SD_CARD(obj);
sd->last_cmd_name = "UNSET";
sd->enable = true;
sd->ocr_power_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, sd_ocr_powerup, sd);
}