1 /* SPDX-License-Identifier: GPL-2.0+ WITH Linu <<
2 /* toshiba.h -- Linux driver for accessing the 1 /* toshiba.h -- Linux driver for accessing the SMM on Toshiba laptops
3 * 2 *
4 * Copyright (c) 1996-2000 Jonathan A. Buzzar 3 * Copyright (c) 1996-2000 Jonathan A. Buzzard (jonathan@buzzard.org.uk)
5 * Copyright (c) 2015 Azael Avalos <coproscef 4 * Copyright (c) 2015 Azael Avalos <coproscefalo@gmail.com>
6 * 5 *
7 * Thanks to Juergen Heinzl <juergen@monocerus 6 * Thanks to Juergen Heinzl <juergen@monocerus.demon.co.uk> for the pointers
8 * on making sure the structure is aligned and 7 * on making sure the structure is aligned and packed.
9 * 8 *
10 * This program is free software; you can redi 9 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public L 10 * under the terms of the GNU General Public License as published by the
12 * Free Software Foundation; either version 2, 11 * Free Software Foundation; either version 2, or (at your option) any
13 * later version. 12 * later version.
14 * 13 *
15 * This program is distributed in the hope tha 14 * This program is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the impl 15 * WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details. 17 * General Public License for more details.
19 * 18 *
20 */ 19 */
21 20
22 #ifndef _UAPI_LINUX_TOSHIBA_H 21 #ifndef _UAPI_LINUX_TOSHIBA_H
23 #define _UAPI_LINUX_TOSHIBA_H 22 #define _UAPI_LINUX_TOSHIBA_H
24 23
25 /* 24 /*
26 * Toshiba modules paths 25 * Toshiba modules paths
27 */ 26 */
28 27
29 #define TOSH_PROC "/proc/toshiba 28 #define TOSH_PROC "/proc/toshiba"
30 #define TOSH_DEVICE "/dev/toshiba" 29 #define TOSH_DEVICE "/dev/toshiba"
31 #define TOSHIBA_ACPI_PROC "/proc/acpi/to 30 #define TOSHIBA_ACPI_PROC "/proc/acpi/toshiba"
32 #define TOSHIBA_ACPI_DEVICE "/dev/toshiba_ 31 #define TOSHIBA_ACPI_DEVICE "/dev/toshiba_acpi"
33 32
34 /* 33 /*
35 * Toshiba SMM structure 34 * Toshiba SMM structure
36 */ 35 */
37 36
38 typedef struct { 37 typedef struct {
39 unsigned int eax; 38 unsigned int eax;
40 unsigned int ebx __attribute__ ((packe 39 unsigned int ebx __attribute__ ((packed));
41 unsigned int ecx __attribute__ ((packe 40 unsigned int ecx __attribute__ ((packed));
42 unsigned int edx __attribute__ ((packe 41 unsigned int edx __attribute__ ((packed));
43 unsigned int esi __attribute__ ((packe 42 unsigned int esi __attribute__ ((packed));
44 unsigned int edi __attribute__ ((packe 43 unsigned int edi __attribute__ ((packed));
45 } SMMRegisters; 44 } SMMRegisters;
46 45
47 /* 46 /*
48 * IOCTLs (0x90 - 0x91) 47 * IOCTLs (0x90 - 0x91)
49 */ 48 */
50 49
51 #define TOSH_SMM _IOWR('t', 0x9 50 #define TOSH_SMM _IOWR('t', 0x90, SMMRegisters)
52 /* 51 /*
53 * Convenience toshiba_acpi command. 52 * Convenience toshiba_acpi command.
54 * 53 *
55 * The System Configuration Interface (SCI) is 54 * The System Configuration Interface (SCI) is opened/closed internally
56 * to avoid userspace of buggy BIOSes. 55 * to avoid userspace of buggy BIOSes.
57 * 56 *
58 * The toshiba_acpi module checks whether the 57 * The toshiba_acpi module checks whether the eax register is set with
59 * SCI_GET (0xf300) or SCI_SET (0xf400), retur 58 * SCI_GET (0xf300) or SCI_SET (0xf400), returning -EINVAL if not.
60 */ 59 */
61 #define TOSHIBA_ACPI_SCI _IOWR('t', 0x9 60 #define TOSHIBA_ACPI_SCI _IOWR('t', 0x91, SMMRegisters)
62 61
63 62
64 #endif /* _UAPI_LINUX_TOSHIBA_H */ 63 #endif /* _UAPI_LINUX_TOSHIBA_H */
65 64
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