| 1 | /*
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| 2 | * Copyright (c) 2014 Martin Decky
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | *
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| 9 | * - Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * - Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * - The name of the author may not be used to endorse or promote products
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| 15 | * derived from this software without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | */
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| 28 |
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| 29 | /** @addtogroup libc
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| 30 | * @{
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| 31 | */
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| 32 | /** @file
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| 33 | */
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| 34 |
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| 35 | #include <ipc/irq.h>
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| 36 | #include <libc.h>
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| 37 | #include <stdlib.h>
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| 38 | #include <stddef.h>
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| 39 | #include <macros.h>
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| 40 |
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| 41 | static irq_cmd_t default_cmds[] = {
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| 42 | {
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| 43 | .cmd = CMD_ACCEPT
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| 44 | }
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| 45 | };
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| 46 |
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| 47 | static const irq_code_t default_ucode = {
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| 48 | 0,
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| 49 | NULL,
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| 50 | ARRAY_SIZE(default_cmds),
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| 51 | default_cmds
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| 52 | };
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| 53 |
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| 54 | /** Subscribe to IRQ notification.
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| 55 | *
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| 56 | * @param inr IRQ number.
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| 57 | * @param method Use this method for notifying me.
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| 58 | * @param ucode Top-half pseudocode handler.
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| 59 | *
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| 60 | * @param[out] out_handle IRQ capability handle returned by the kernel.
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| 61 | *
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| 62 | * @return Error code returned by the kernel.
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| 63 | *
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| 64 | */
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| 65 | errno_t ipc_irq_subscribe(int inr, sysarg_t method, const irq_code_t *ucode,
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| 66 | cap_irq_handle_t *out_handle)
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| 67 | {
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| 68 | if (ucode == NULL)
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| 69 | ucode = &default_ucode;
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| 70 |
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| 71 | return (errno_t) __SYSCALL4(SYS_IPC_IRQ_SUBSCRIBE, inr, method,
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| 72 | (sysarg_t) ucode, (sysarg_t) out_handle);
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| 73 | }
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| 74 |
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| 75 | /** Unsubscribe from IRQ notification.
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| 76 | *
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| 77 | * @param cap IRQ capability handle.
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| 78 | *
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| 79 | * @return Value returned by the kernel.
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| 80 | *
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| 81 | */
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| 82 | errno_t ipc_irq_unsubscribe(cap_irq_handle_t cap)
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| 83 | {
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| 84 | return (errno_t) __SYSCALL1(SYS_IPC_IRQ_UNSUBSCRIBE,
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| 85 | CAP_HANDLE_RAW(cap));
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| 86 | }
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| 87 |
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| 88 | /** @}
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| 89 | */
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