feat: add support for mtd UAPI

This adds MTD (`mtd/mtd-user.h`) UAPI pieces, useful to manipulate MTD devices
from Rust.

This adds also a few `ioctl` exposed by this userspace API.

Signed-off-by: Raito Bezarius <[email protected]>

Author: RaitoBezarius

Cargo.toml

@@ -21,7 +21,7 @@ static_assertions = "1.1.0"
 libc = "0.2.100"
 
 [package.metadata.docs.rs]
-features = ["default", "ioctl", "netlink", "io_uring", "if_arp", "if_ether", "if_packet", "net", "prctl", "elf", "xdp", "mempolicy", "system"]
+features = ["default", "ioctl", "netlink", "io_uring", "if_arp", "if_ether", "if_packet", "net", "prctl", "elf", "xdp", "mempolicy", "system", "mtd"]
 targets = ["x86_64-unknown-linux-gnu", "i686-unknown-linux-gnu"]
 
 # The rest of this file is auto-generated!
@@ -34,6 +34,7 @@ if_packet = []
 io_uring = []
 ioctl = []
 mempolicy = []
+mtd = []
 net = []
 netlink = []
 prctl = []

gen/ioctl/list.c

@@ -25,6 +25,7 @@ struct sockaddr {
     struct __kernel_sockaddr_storage __storage;
 };
 
+#include <mtd/mtd-abi.h>
 #include <linux/acrn.h>
 #include <linux/agpgart.h>
 #include <linux/am437x-vpfe.h>
@@ -2075,4 +2076,29 @@ void list(void) {
     IOCTL_REQUEST(ACRN_IOCTL_RESET_VM);
     IOCTL_REQUEST(ACRN_IOCTL_DESTROY_IOREQ_CLIENT);
     IOCTL_REQUEST(ACRN_IOCTL_VM_INTR_MONITOR);
+
+    IOCTL_REQUEST(MEMGETINFO);
+    IOCTL_REQUEST(MEMERASE);
+    IOCTL_REQUEST(MEMWRITEOOB);
+    IOCTL_REQUEST(MEMLOCK);
+    IOCTL_REQUEST(MEMUNLOCK);
+    IOCTL_REQUEST(MEMGETREGIONCOUNT);
+    IOCTL_REQUEST(MEMGETREGIONINFO);
+    IOCTL_REQUEST(MEMGETOOBSEL);
+    IOCTL_REQUEST(MEMGETBADBLOCK);
+    IOCTL_REQUEST(MEMSETBADBLOCK);
+    IOCTL_REQUEST(OTPSELECT);
+    IOCTL_REQUEST(OTPGETREGIONINFO);
+    IOCTL_REQUEST(OTPGETREGIONCOUNT);
+    IOCTL_REQUEST(OTPLOCK);
+    IOCTL_REQUEST(ECCGETLAYOUT);
+    IOCTL_REQUEST(ECCGETSTATS);
+    IOCTL_REQUEST(MTDFILEMODE);
+    IOCTL_REQUEST(MEMERASE64);
+    IOCTL_REQUEST(MEMWRITEOOB64);
+    IOCTL_REQUEST(MEMREADOOB64);
+    IOCTL_REQUEST(MEMISLOCKED);
+    IOCTL_REQUEST(MEMWRITE);
+    IOCTL_REQUEST(OTPERASE);
+    IOCTL_REQUEST(MEMREAD);
 }

gen/modules/mtd.h

@@ -0,0 +1,9 @@
+// This file includes selected Linux header files.
+
+#include "support.h"
+
+// Selected Linux headers.
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,10,0)
+#include <mtd/mtd-user.h>
+#endif

src/aarch64/mtd.rs

@@ -0,0 +1,218 @@
+/* automatically generated by rust-bindgen 0.66.1 */
+
+pub type __s8 = crate::ctypes::c_schar;
+pub type __u8 = crate::ctypes::c_uchar;
+pub type __s16 = crate::ctypes::c_short;
+pub type __u16 = crate::ctypes::c_ushort;
+pub type __s32 = crate::ctypes::c_int;
+pub type __u32 = crate::ctypes::c_uint;
+pub type __s64 = crate::ctypes::c_longlong;
+pub type __u64 = crate::ctypes::c_ulonglong;
+pub type __kernel_key_t = crate::ctypes::c_int;
+pub type __kernel_mqd_t = crate::ctypes::c_int;
+pub type __kernel_old_uid_t = crate::ctypes::c_ushort;
+pub type __kernel_old_gid_t = crate::ctypes::c_ushort;
+pub type __kernel_long_t = crate::ctypes::c_long;
+pub type __kernel_ulong_t = crate::ctypes::c_ulong;
+pub type __kernel_ino_t = __kernel_ulong_t;
+pub type __kernel_mode_t = crate::ctypes::c_uint;
+pub type __kernel_pid_t = crate::ctypes::c_int;
+pub type __kernel_ipc_pid_t = crate::ctypes::c_int;
+pub type __kernel_uid_t = crate::ctypes::c_uint;
+pub type __kernel_gid_t = crate::ctypes::c_uint;
+pub type __kernel_suseconds_t = __kernel_long_t;
+pub type __kernel_daddr_t = crate::ctypes::c_int;
+pub type __kernel_uid32_t = crate::ctypes::c_uint;
+pub type __kernel_gid32_t = crate::ctypes::c_uint;
+pub type __kernel_old_dev_t = crate::ctypes::c_uint;
+pub type __kernel_size_t = __kernel_ulong_t;
+pub type __kernel_ssize_t = __kernel_long_t;
+pub type __kernel_ptrdiff_t = __kernel_long_t;
+pub type __kernel_off_t = __kernel_long_t;
+pub type __kernel_loff_t = crate::ctypes::c_longlong;
+pub type __kernel_old_time_t = __kernel_long_t;
+pub type __kernel_time_t = __kernel_long_t;
+pub type __kernel_time64_t = crate::ctypes::c_longlong;
+pub type __kernel_clock_t = __kernel_long_t;
+pub type __kernel_timer_t = crate::ctypes::c_int;
+pub type __kernel_clockid_t = crate::ctypes::c_int;
+pub type __kernel_caddr_t = *mut crate::ctypes::c_char;
+pub type __kernel_uid16_t = crate::ctypes::c_ushort;
+pub type __kernel_gid16_t = crate::ctypes::c_ushort;
+pub type __s128 = i128;
+pub type __u128 = u128;
+pub type __le16 = __u16;
+pub type __be16 = __u16;
+pub type __le32 = __u32;
+pub type __be32 = __u32;
+pub type __le64 = __u64;
+pub type __be64 = __u64;
+pub type __sum16 = __u16;
+pub type __wsum = __u32;
+pub type __poll_t = crate::ctypes::c_uint;
+pub type mtd_info_t = mtd_info_user;
+pub type erase_info_t = erase_info_user;
+pub type region_info_t = region_info_user;
+pub type nand_oobinfo_t = nand_oobinfo;
+pub type nand_ecclayout_t = nand_ecclayout_user;
+#[repr(C)]
+#[derive(Debug, Copy, Clone)]
+pub struct erase_info_user {
+pub start: __u32,
+pub length: __u32,
+}
+#[repr(C)]
+#[derive(Debug, Copy, Clone)]
+pub struct erase_info_user64 {
+pub start: __u64,
+pub length: __u64,
+}
+#[repr(C)]
+#[derive(Debug, Copy, Clone)]
+pub struct mtd_oob_buf {
+pub start: __u32,
+pub length: __u32,
+pub ptr: *mut crate::ctypes::c_uchar,
+}
+#[repr(C)]
+#[derive(Debug, Copy, Clone)]
+pub struct mtd_oob_buf64 {
+pub start: __u64,
+pub pad: __u32,
+pub length: __u32,
+pub usr_ptr: __u64,
+}
+#[repr(C)]
+#[derive(Debug, Copy, Clone)]
+pub struct mtd_write_req {
+pub start: __u64,
+pub len: __u64,
+pub ooblen: __u64,
+pub usr_data: __u64,
+pub usr_oob: __u64,
+pub mode: __u8,
+pub padding: [__u8; 7usize],
+}
+#[repr(C)]
+#[derive(Debug, Copy, Clone)]
+pub struct mtd_read_req_ecc_stats {
+pub uncorrectable_errors: __u32,
+pub corrected_bitflips: __u32,
+pub max_bitflips: __u32,
+}
+#[repr(C)]
+#[derive(Debug, Copy, Clone)]
+pub struct mtd_read_req {
+pub start: __u64,
+pub len: __u64,
+pub ooblen: __u64,
+pub usr_data: __u64,
+pub usr_oob: __u64,
+pub mode: __u8,
+pub padding: [__u8; 7usize],
+pub ecc_stats: mtd_read_req_ecc_stats,
+}
+#[repr(C)]
+#[derive(Debug, Copy, Clone)]
+pub struct mtd_info_user {
+pub type_: __u8,
+pub flags: __u32,
+pub size: __u32,
+pub erasesize: __u32,
+pub writesize: __u32,
+pub oobsize: __u32,
+pub padding: __u64,
+}
+#[repr(C)]
+#[derive(Debug, Copy, Clone)]
+pub struct region_info_user {
+pub offset: __u32,
+pub erasesize: __u32,
+pub numblocks: __u32,
+pub regionindex: __u32,
+}
+#[repr(C)]
+#[derive(Debug, Copy, Clone)]
+pub struct otp_info {
+pub start: __u32,
+pub length: __u32,
+pub locked: __u32,
+}
+#[repr(C)]
+#[derive(Debug, Copy, Clone)]
+pub struct nand_oobinfo {
+pub useecc: __u32,
+pub eccbytes: __u32,
+pub oobfree: [[__u32; 2usize]; 8usize],
+pub eccpos: [__u32; 32usize],
+}
+#[repr(C)]
+#[derive(Debug, Copy, Clone)]
+pub struct nand_oobfree {
+pub offset: __u32,
+pub length: __u32,
+}
+#[repr(C)]
+#[derive(Debug, Copy, Clone)]
+pub struct nand_ecclayout_user {
+pub eccbytes: __u32,
+pub eccpos: [__u32; 64usize],
+pub oobavail: __u32,
+pub oobfree: [nand_oobfree; 8usize],
+}
+#[repr(C)]
+#[derive(Debug, Copy, Clone)]
+pub struct mtd_ecc_stats {
+pub corrected: __u32,
+pub failed: __u32,
+pub badblocks: __u32,
+pub bbtblocks: __u32,
+}
+pub const MTD_ABSENT: u32 = 0;
+pub const MTD_RAM: u32 = 1;
+pub const MTD_ROM: u32 = 2;
+pub const MTD_NORFLASH: u32 = 3;
+pub const MTD_NANDFLASH: u32 = 4;
+pub const MTD_DATAFLASH: u32 = 6;
+pub const MTD_UBIVOLUME: u32 = 7;
+pub const MTD_MLCNANDFLASH: u32 = 8;
+pub const MTD_WRITEABLE: u32 = 1024;
+pub const MTD_BIT_WRITEABLE: u32 = 2048;
+pub const MTD_NO_ERASE: u32 = 4096;
+pub const MTD_POWERUP_LOCK: u32 = 8192;
+pub const MTD_SLC_ON_MLC_EMULATION: u32 = 16384;
+pub const MTD_CAP_ROM: u32 = 0;
+pub const MTD_CAP_RAM: u32 = 7168;
+pub const MTD_CAP_NORFLASH: u32 = 3072;
+pub const MTD_CAP_NANDFLASH: u32 = 1024;
+pub const MTD_CAP_NVRAM: u32 = 7168;
+pub const MTD_NANDECC_OFF: u32 = 0;
+pub const MTD_NANDECC_PLACE: u32 = 1;
+pub const MTD_NANDECC_AUTOPLACE: u32 = 2;
+pub const MTD_NANDECC_PLACEONLY: u32 = 3;
+pub const MTD_NANDECC_AUTOPL_USR: u32 = 4;
+pub const MTD_OTP_OFF: u32 = 0;
+pub const MTD_OTP_FACTORY: u32 = 1;
+pub const MTD_OTP_USER: u32 = 2;
+pub const MTD_MAX_OOBFREE_ENTRIES: u32 = 8;
+pub const MTD_MAX_ECCPOS_ENTRIES: u32 = 64;
+pub const MTD_OPS_PLACE_OOB: _bindgen_ty_1 = _bindgen_ty_1::MTD_OPS_PLACE_OOB;
+pub const MTD_OPS_AUTO_OOB: _bindgen_ty_1 = _bindgen_ty_1::MTD_OPS_AUTO_OOB;
+pub const MTD_OPS_RAW: _bindgen_ty_1 = _bindgen_ty_1::MTD_OPS_RAW;
+#[repr(u32)]
+#[non_exhaustive]
+#[derive(Debug, Copy, Clone, Hash, PartialEq, Eq)]
+pub enum _bindgen_ty_1 {
+MTD_OPS_PLACE_OOB = 0,
+MTD_OPS_AUTO_OOB = 1,
+MTD_OPS_RAW = 2,
+}
+#[repr(u32)]
+#[non_exhaustive]
+#[derive(Debug, Copy, Clone, Hash, PartialEq, Eq)]
+pub enum mtd_file_modes {
+MTD_FILE_MODE_NORMAL = 0,
+MTD_FILE_MODE_OTP_FACTORY = 1,
+MTD_FILE_MODE_OTP_USER = 2,
+MTD_FILE_MODE_RAW = 3,
+}