cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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ioctl.h (2356B)

      1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
      2#ifndef LINUX_MMC_IOCTL_H
      3#define LINUX_MMC_IOCTL_H
      4
      5#include <linux/types.h>
      6#include <linux/major.h>
      7
      8struct mmc_ioc_cmd {
      9	/*
     10	 * Direction of data: nonzero = write, zero = read.
     11	 * Bit 31 selects 'Reliable Write' for RPMB.
     12	 */
     13	int write_flag;
     14
     15	/* Application-specific command.  true = precede with CMD55 */
     16	int is_acmd;
     17
     18	__u32 opcode;
     19	__u32 arg;
     20	__u32 response[4];  /* CMD response */
     21	unsigned int flags;
     22	unsigned int blksz;
     23	unsigned int blocks;
     24
     25	/*
     26	 * Sleep at least postsleep_min_us useconds, and at most
     27	 * postsleep_max_us useconds *after* issuing command.  Needed for
     28	 * some read commands for which cards have no other way of indicating
     29	 * they're ready for the next command (i.e. there is no equivalent of
     30	 * a "busy" indicator for read operations).
     31	 */
     32	unsigned int postsleep_min_us;
     33	unsigned int postsleep_max_us;
     34
     35	/*
     36	 * Override driver-computed timeouts.  Note the difference in units!
     37	 */
     38	unsigned int data_timeout_ns;
     39	unsigned int cmd_timeout_ms;
     40
     41	/*
     42	 * For 64-bit machines, the next member, ``__u64 data_ptr``, wants to
     43	 * be 8-byte aligned.  Make sure this struct is the same size when
     44	 * built for 32-bit.
     45	 */
     46	__u32 __pad;
     47
     48	/* DAT buffer */
     49	__u64 data_ptr;
     50};
     51#define mmc_ioc_cmd_set_data(ic, ptr) ic.data_ptr = (__u64)(unsigned long) ptr
     52
     53/**
     54 * struct mmc_ioc_multi_cmd - multi command information
     55 * @num_of_cmds: Number of commands to send. Must be equal to or less than
     56 *	MMC_IOC_MAX_CMDS.
     57 * @cmds: Array of commands with length equal to 'num_of_cmds'
     58 */
     59struct mmc_ioc_multi_cmd {
     60	__u64 num_of_cmds;
     61	struct mmc_ioc_cmd cmds[0];
     62};
     63
     64#define MMC_IOC_CMD _IOWR(MMC_BLOCK_MAJOR, 0, struct mmc_ioc_cmd)
     65/*
     66 * MMC_IOC_MULTI_CMD: Used to send an array of MMC commands described by
     67 *	the structure mmc_ioc_multi_cmd. The MMC driver will issue all
     68 *	commands in array in sequence to card.
     69 */
     70#define MMC_IOC_MULTI_CMD _IOWR(MMC_BLOCK_MAJOR, 1, struct mmc_ioc_multi_cmd)
     71/*
     72 * Since this ioctl is only meant to enhance (and not replace) normal access
     73 * to the mmc bus device, an upper data transfer limit of MMC_IOC_MAX_BYTES
     74 * is enforced per ioctl call.  For larger data transfers, use the normal
     75 * block device operations.
     76 */
     77#define MMC_IOC_MAX_BYTES  (512L * 1024)
     78#define MMC_IOC_MAX_CMDS    255
     79#endif /* LINUX_MMC_IOCTL_H */