/usr/include/asm-x86_64/rtai_usi.h is in librtai-dev 3.9.1-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 | /*
* Copyright (C) 1999-2005 Paolo Mantegazza <mantegazza@aero.polimi.it>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef _RTAI_ASM_X8664_USI_H
#define _RTAI_ASM_X8664_USI_H
#define USI_SRQ_MASK 0xFFFFFFF0
#define _STARTUP_IRQ 1
#define _SHUTDOWN_IRQ 2
#define _ENABLE_IRQ 3
#define _DISABLE_IRQ 4
#define _MASK_AND_ACK_IRQ 5
#define _ACK_IRQ 6
#define _UNMASK_IRQ 7
#define _DISINT 8
#define _ENINT 9
#define _SAVE_FLAGS_CLI 10
#define _RESTORE_FLAGS 11
#ifdef __KERNEL__
#ifdef CONFIG_RTAI_USI
static void usi_cli(unsigned long arg, unsigned long *eflags)
{
clear_bit(RTAI_IFLAG, eflags);
}
static void usi_sti(unsigned long arg, unsigned long *eflags)
{
set_bit(RTAI_IFLAG, eflags);
}
static unsigned long usi_save_flags_and_cli(unsigned long arg, unsigned long *eflags)
{
unsigned long flags = *eflags;
clear_bit(RTAI_IFLAG, eflags);
return flags;
}
static void usi_restore_flags(unsigned long flags, unsigned long *eflags)
{
if (test_bit(RTAI_IFLAG, &flags)) {
set_bit(RTAI_IFLAG, eflags);
} else {
clear_bit(RTAI_IFLAG, eflags);
}
}
static unsigned long (*usi_fun_entry[ ])(unsigned long, unsigned long *) = {
[_STARTUP_IRQ] = (void *)rt_startup_irq,
[_SHUTDOWN_IRQ] = (void *)rt_shutdown_irq,
[_ENABLE_IRQ] = (void *)rt_enable_irq,
[_DISABLE_IRQ] = (void *)rt_disable_irq,
[_MASK_AND_ACK_IRQ] = (void *)rt_mask_and_ack_irq,
[_ACK_IRQ] = (void *)rt_ack_irq,
[_UNMASK_IRQ] = (void *)rt_unmask_irq,
[_DISINT] = (void *)usi_cli,
[_ENINT] = (void *)usi_sti,
[_SAVE_FLAGS_CLI] = (void *)usi_save_flags_and_cli,
[_RESTORE_FLAGS] = (void *)usi_restore_flags
};
#define IF_IS_A_USI_SRQ_CALL_IT(srq, args, retval, psr, retpath) \
if (srq > USI_SRQ_MASK) { \
*retval = usi_fun_entry[srq & ~USI_SRQ_MASK](args, &(psr)); \
return retpath; \
}
#else
#define IF_IS_A_USI_SRQ_CALL_IT(srq, args, retval, psr, retpath)
#endif
#endif /* __KERNEL__ */
#endif /* !_RTAI_ASM_X8664_USI_H */
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