Merge "uapi: mmc: Fixed RPMB userspace service compilation"

#define LINUX_MMC_IOCTL_H

#include <linux/types.h>

#include <linux/major.h>

struct mmc_ioc_cmd {

	/* Implies direction of data.  true = write, false = read */

 *	commands in array in sequence to card.

 */

#define MMC_IOC_MULTI_CMD _IOWR(MMC_BLOCK_MAJOR, 1, struct mmc_ioc_multi_cmd)

/**

 * There are four request types that are applicable for rpmb accesses- two

 * under read category and two under write. They are

 *

 *  Reads

 *  -------

 *  1. Read Write Counter

 *  2. Authenticated data read

 *

 *

 *  Writes

 *  -------

 *  1. Provision RPMB key (though it might be done in a secure environment)

 *  2. Authenticated data write

 *

 *  While its given that the rpmb data frames are going to have that

 *  information encoded in it and the frames should be generated by a secure

 *  piece of code, the request types can be classified as above.

 *

 *  So here are the set of commands that should be executed atomically in the

 *  ioctl for rpmb read operation

 *  1. Switch partition

 *  2. Set block count

 *  3. Write data frame - CMD25 to write the rpmb data frame

 *  4. Set block count

 *  5. Read the data - CMD18 to do the actual read

 *

 *  Similarly for rpmb write operation, these are the commands that should be

 *  executed atomically in the ioctl for rpmb write operation

 *  1. Switch partition

 *  2. Set block count

 *  3. Write data frame - CMD25 to write the rpmb data frame with data

 *  4. Set block count

 *  5. Read the data - CMD25 to write rpmb data frame indicating that rpmb

 *     result register is about to be read

 *  6. Set block count

 *  7. Read rpmb result - CMD18 to read the rpmb result register

 *

 * Each of the above commands should be sent individually via struct mmc_ioc_cmd

 * and fields like is_acmd that are not needed for rpmb operations will be

 * ignored.

 */

#define MMC_IOC_MAX_RPMB_CMD	3

struct mmc_ioc_rpmb {

	struct mmc_ioc_cmd cmds[MMC_IOC_MAX_RPMB_CMD];

}

;

/*

 * This ioctl is meant for use with rpmb partitions. This is needed since the

 * access procedure for this particular partition is different from regular

 * or normal partitions.

 */

#define MMC_IOC_RPMB_CMD _IOWR(MMC_BLOCK_MAJOR, 0, struct mmc_ioc_rpmb)

/*

 * Since this ioctl is only meant to enhance (and not replace) normal access

 * to the mmc bus device, an upper data transfer limit of MMC_IOC_MAX_BYTES