| 1 | /*
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| 2 | * hal_irqmask.c - implementation of Generic IRQ Masking API for x86
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| 3 | *
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| 4 | * Copyright (c) 2017 Maxime Villard
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| 5 | *
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| 6 | * This file is part of ALMOS-MKH.
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| 7 | *
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| 8 | * ALMOS-MKH is free software; you can redistribute it and/or modify it
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| 9 | * under the terms of the GNU General Public License as published by
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| 10 | * the Free Software Foundation; version 2.0 of the License.
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| 11 | *
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| 12 | * ALMOS-MKH is distributed in the hope that it will be useful, but
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| 13 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 15 | * General Public License for more details.
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| 16 | *
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| 17 | * You should have received a copy of the GNU General Public License
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| 18 | * along with ALMOS-MKH; if not, write to the Free Software Foundation,
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| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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| 20 | */
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| 21 |
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| 22 | #include <hal_kernel_types.h>
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| 23 | #include <hal_internal.h>
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| 24 | #include <hal_segmentation.h>
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| 25 |
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| 26 | inline void hal_disable_irq(reg_t *old)
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| 27 | {
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| 28 | tls_t *tls = curtls();
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| 29 |
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| 30 | if (old)
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| 31 | *old = tls->tls_intr;
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| 32 | tls->tls_intr = INTRS_DISABLED;
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| 33 |
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| 34 | cli();
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| 35 | }
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| 36 |
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| 37 | inline void hal_enable_irq(reg_t *old)
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| 38 | {
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| 39 | tls_t *tls = curtls();
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| 40 |
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| 41 | if (old)
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| 42 | *old = tls->tls_intr;
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| 43 | tls->tls_intr = INTRS_ENABLED;
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| 44 |
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| 45 | sti();
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| 46 | }
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| 47 |
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| 48 | inline void hal_restore_irq(reg_t old)
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| 49 | {
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| 50 | tls_t *tls = curtls();
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| 51 |
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| 52 | tls->tls_intr = old;
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| 53 |
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| 54 | if (old == INTRS_ENABLED)
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| 55 | sti();
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| 56 | else if(old == INTRS_DISABLED)
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| 57 | cli();
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| 58 | else
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| 59 | x86_panic("hal_restore_irq: not reachable");
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| 60 | }
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| 61 |
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