CMD_0_ATTR
#define CMD_0_ATTR_A FIELD_PREP(CMD_0_ATTR, 0x2)
#define CMD_0_ATTR_I FIELD_PREP(CMD_0_ATTR, 0x1)
#define CMD_0_ATTR_R FIELD_PREP(CMD_0_ATTR, 0x0)
#define CMD_0_ATTR_C FIELD_PREP(CMD_0_ATTR, 0x3)
#define CMD_0_ATTR_M FIELD_PREP(CMD_0_ATTR, 0x7)
#define CMD_0_ATTR_U FIELD_PREP(CMD_0_ATTR, 0x4)
#define CMD_0_ATTR_A FIELD_PREP(CMD_0_ATTR, 0x2)
*ring_data++ = FIELD_PREP(CMD_0_ATTR, 0x7) | FIELD_PREP(CMD_0_TID, xfer->cmd_tid);