SD requests are 48-bit SD frames, while SD responses can be
48-bit or 136-bit frames. The 48-bit response frames share
the same CRC logic than request frames.
Unify the 48-bit framing to reuse the same CRC logic between
requests and responses.
Signed-off-by: Philippe Mathieu-Daudé <f4...@amsat.org>
---
include/hw/sd/sd.h | 15 +++++++++++++--
1 file changed, 13 insertions(+), 2 deletions(-)
diff --git a/include/hw/sd/sd.h b/include/hw/sd/sd.h
index 9bdb3c9285..f0b41232f7 100644
--- a/include/hw/sd/sd.h
+++ b/include/hw/sd/sd.h
@@ -76,11 +76,22 @@ typedef enum {
sd_adtc, /* addressed with data transfer */
} sd_cmd_type_t;
-typedef struct {
+/**
+ * SDFrame48: 48 bits commands or responses
+ *
+ * @cmd: request: command
+ * response: mirrored command
+ * @arg: request: address information or parameter
+ * response: status information, OCR register, RCA
+ * @crc: 7-bit CRC checksum
+ */
+typedef struct SDFrame48 {
uint8_t cmd;
uint32_t arg;
uint8_t crc;
-} SDRequest;
+} SDFrame48;
+
+typedef struct SDFrame48 SDRequest;
typedef struct SDState SDState;
typedef struct SDBus SDBus;
--
2.17.0
