diff mbox series

[1/8] sdcard: Do not trace CMD55, except when we already expect an ACMD

Message ID 20180309153654.13518-2-f4bug@amsat.org
State New
Headers show
Series SDCard: improve tracing, support UHS-I | expand

Commit Message

Philippe Mathieu-Daudé March 9, 2018, 3:36 p.m. UTC 
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Acked-by: Alistair Francis <alistair.francis@xilinx.com>
---
 hw/sd/sd.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

Comments

Peter Maydell March 9, 2018, 3:44 p.m. UTC | #1 
On 9 March 2018 at 15:36, Philippe Mathieu-Daudé <f4bug@amsat.org> wrote:
> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
> Acked-by: Alistair Francis <alistair.francis@xilinx.com>
> ---
>  hw/sd/sd.c | 11 ++++++++---
>  1 file changed, 8 insertions(+), 3 deletions(-)
>
> diff --git a/hw/sd/sd.c b/hw/sd/sd.c
> index 933890e86f..4a9520e38e 100644
> --- a/hw/sd/sd.c
> +++ b/hw/sd/sd.c
> @@ -866,13 +866,18 @@ static void sd_lock_command(SDState *sd)
>          sd->card_status &= ~CARD_IS_LOCKED;
>  }
>
> -static sd_rsp_type_t sd_normal_command(SDState *sd,
> -                                       SDRequest req)
> +static sd_rsp_type_t sd_normal_command(SDState *sd, SDRequest req)
>  {
>      uint32_t rca = 0x0000;
>      uint64_t addr = (sd->ocr & (1 << 30)) ? (uint64_t) req.arg << 9 : req.arg;
>
> -    trace_sdcard_normal_command(req.cmd, req.arg, sd_state_name(sd->state));
> +    /* 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(req.cmd, req.arg,
> +                                    sd_state_name(sd->state));
> +    }
>
>      /* Not interpreting this as an app command */
>      sd->card_status &= ~APP_CMD;
> --
> 2.16.2

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>

thanks
-- PMM
diff mbox series

Patch

diff --git a/hw/sd/sd.c b/hw/sd/sd.c
index 933890e86f..4a9520e38e 100644
--- a/hw/sd/sd.c
+++ b/hw/sd/sd.c
@@ -866,13 +866,18 @@  static void sd_lock_command(SDState *sd)
         sd->card_status &= ~CARD_IS_LOCKED;
 }
 
-static sd_rsp_type_t sd_normal_command(SDState *sd,
-                                       SDRequest req)
+static sd_rsp_type_t sd_normal_command(SDState *sd, SDRequest req)
 {
     uint32_t rca = 0x0000;
     uint64_t addr = (sd->ocr & (1 << 30)) ? (uint64_t) req.arg << 9 : req.arg;
 
-    trace_sdcard_normal_command(req.cmd, req.arg, sd_state_name(sd->state));
+    /* 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(req.cmd, req.arg,
+                                    sd_state_name(sd->state));
+    }
 
     /* Not interpreting this as an app command */
     sd->card_status &= ~APP_CMD;