[25] | 1 | /* |
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[99] | 2 | * hal_irqmask.c - implementation of Generic IRQ Masking API for x86 |
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[25] | 3 | * |
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[99] | 4 | * Copyright (c) 2017 Maxime Villard |
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[25] | 5 | * |
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[99] | 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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[25] | 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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[99] | 12 | * ALMOS-MKH is distributed in the hope that it will be useful, but |
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[25] | 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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[234] | 18 | * along with ALMOS-MKH; if not, write to the Free Software Foundation, |
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[25] | 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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[457] | 22 | #include <hal_kernel_types.h> |
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[48] | 23 | #include <hal_internal.h> |
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[240] | 24 | #include <hal_segmentation.h> |
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[25] | 25 | |
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[285] | 26 | inline void hal_disable_irq(reg_t *old) |
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[240] | 27 | { |
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[336] | 28 | tls_t *tls = curtls(); |
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[99] | 29 | |
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[370] | 30 | if (old) |
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| 31 | *old = tls->tls_intr; |
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[240] | 32 | tls->tls_intr = INTRS_DISABLED; |
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[122] | 33 | |
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[99] | 34 | cli(); |
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[25] | 35 | } |
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| 36 | |
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[285] | 37 | inline void hal_enable_irq(reg_t *old) |
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[25] | 38 | { |
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[336] | 39 | tls_t *tls = curtls(); |
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[240] | 40 | |
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[370] | 41 | if (old) |
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| 42 | *old = tls->tls_intr; |
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[240] | 43 | tls->tls_intr = INTRS_ENABLED; |
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| 44 | |
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[99] | 45 | sti(); |
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[25] | 46 | } |
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| 47 | |
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[285] | 48 | inline void hal_restore_irq(reg_t old) |
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[25] | 49 | { |
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[336] | 50 | tls_t *tls = curtls(); |
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[122] | 51 | |
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[240] | 52 | tls->tls_intr = old; |
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| 53 | |
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| 54 | if (old == INTRS_ENABLED) |
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[122] | 55 | sti(); |
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[240] | 56 | else if(old == INTRS_DISABLED) |
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[122] | 57 | cli(); |
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[118] | 58 | else |
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[122] | 59 | x86_panic("hal_restore_irq: not reachable"); |
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[25] | 60 | } |
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| 61 | |
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