xiaoxiang781216 commented on code in PR #8256:
URL: https://github.com/apache/nuttx/pull/8256#discussion_r1088616280
##########
include/nuttx/mmcsd.h:
##########
@@ -49,6 +54,49 @@
* Public Types
****************************************************************************/
+struct mmc_ioc_cmd
+{
+ /* Direction of data: nonzero = write, zero = read.
+ * Bit 31 selects 'Reliable Write' for RPMB.
+ */
+
+ int write_flag;
+
+ /* Application-specific command. true = precede with CMD55 */
+
+ int is_acmd;
+
+ uint32_t opcode;
+ uint32_t arg;
+ uint32_t response[4]; /* CMD response */
+ unsigned int flags;
+ unsigned int blksz;
+ unsigned int blocks;
+
+ /* For 64-bit machines, the next member, ``uint64_t data_ptr``, wants to
+ * be 8-byte aligned. Make sure this struct is the same size when
+ * built for 32-bit.
+ */
+
+ uint32_t pad;
+
+ /* DAT buffer */
+
+ uint64_t data_ptr;
Review Comment:
It's used here:
https://github.com/apache/nuttx/pull/8256/files#diff-161d00b0d61f441522bd0e1fbdb8c154db2c56fcdd69d484d0268c50b4788373R3070
https://github.com/apache/nuttx/pull/8256/files#diff-161d00b0d61f441522bd0e1fbdb8c154db2c56fcdd69d484d0268c50b4788373R3070
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