| 1 | /*
|
|---|
| 2 | * Copyright (c) 2014 Jiri Svoboda
|
|---|
| 3 | * All rights reserved.
|
|---|
| 4 | *
|
|---|
| 5 | * Redistribution and use in source and binary forms, with or without
|
|---|
| 6 | * modification, are permitted provided that the following conditions
|
|---|
| 7 | * are met:
|
|---|
| 8 | *
|
|---|
| 9 | * - Redistributions of source code must retain the above copyright
|
|---|
| 10 | * notice, this list of conditions and the following disclaimer.
|
|---|
| 11 | * - Redistributions in binary form must reproduce the above copyright
|
|---|
| 12 | * notice, this list of conditions and the following disclaimer in the
|
|---|
| 13 | * documentation and/or other materials provided with the distribution.
|
|---|
| 14 | * - The name of the author may not be used to endorse or promote products
|
|---|
| 15 | * derived from this software without specific prior written permission.
|
|---|
| 16 | *
|
|---|
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|---|
| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|---|
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|---|
| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|---|
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|---|
| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|---|
| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|---|
| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|---|
| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|---|
| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|---|
| 27 | */
|
|---|
| 28 |
|
|---|
| 29 | /** @addtogroup libc
|
|---|
| 30 | * @{
|
|---|
| 31 | */
|
|---|
| 32 | /** @file
|
|---|
| 33 | */
|
|---|
| 34 |
|
|---|
| 35 | #include <assert.h>
|
|---|
| 36 | #include <errno.h>
|
|---|
| 37 | #include <ipc/irc.h>
|
|---|
| 38 | #include <ipc/services.h>
|
|---|
| 39 | #include <irc.h>
|
|---|
| 40 | #include <ns.h>
|
|---|
| 41 | #include <sysinfo.h>
|
|---|
| 42 |
|
|---|
| 43 | static async_sess_t *irc_sess;
|
|---|
| 44 |
|
|---|
| 45 | /** Connect to IRC service.
|
|---|
| 46 | *
|
|---|
| 47 | * @return EOK on success, EIO on failure
|
|---|
| 48 | */
|
|---|
| 49 | static int irc_init(void)
|
|---|
| 50 | {
|
|---|
| 51 | sysarg_t apic;
|
|---|
| 52 | sysarg_t i8259;
|
|---|
| 53 |
|
|---|
| 54 | assert(irc_sess == NULL);
|
|---|
| 55 |
|
|---|
| 56 | if (((sysinfo_get_value("apic", &apic) == EOK) && (apic))
|
|---|
| 57 | || ((sysinfo_get_value("i8259", &i8259) == EOK) && (i8259))) {
|
|---|
| 58 | irc_sess = service_connect_blocking(EXCHANGE_SERIALIZE,
|
|---|
| 59 | SERVICE_IRC, 0, 0);
|
|---|
| 60 | }
|
|---|
| 61 |
|
|---|
| 62 | if (irc_sess == NULL)
|
|---|
| 63 | return EIO;
|
|---|
| 64 |
|
|---|
| 65 | return EOK;
|
|---|
| 66 | }
|
|---|
| 67 |
|
|---|
| 68 | /** Enable interrupt.
|
|---|
| 69 | *
|
|---|
| 70 | * @param irq IRQ number
|
|---|
| 71 | */
|
|---|
| 72 | int irc_enable_interrupt(int irq)
|
|---|
| 73 | {
|
|---|
| 74 | int rc;
|
|---|
| 75 |
|
|---|
| 76 | if (irc_sess == NULL) {
|
|---|
| 77 | rc = irc_init();
|
|---|
| 78 | if (rc != EOK)
|
|---|
| 79 | return rc;
|
|---|
| 80 | }
|
|---|
| 81 |
|
|---|
| 82 | async_exch_t *exch = async_exchange_begin(irc_sess);
|
|---|
| 83 | rc = async_req_1_0(exch, IRC_ENABLE_INTERRUPT, irq);
|
|---|
| 84 | async_exchange_end(exch);
|
|---|
| 85 |
|
|---|
| 86 | return rc;
|
|---|
| 87 | }
|
|---|
| 88 |
|
|---|
| 89 |
|
|---|
| 90 | /** Disable interrupt.
|
|---|
| 91 | *
|
|---|
| 92 | * @param irq IRQ number
|
|---|
| 93 | */
|
|---|
| 94 | int irc_disable_interrupt(int irq)
|
|---|
| 95 | {
|
|---|
| 96 | int rc;
|
|---|
| 97 |
|
|---|
| 98 | if (irc_sess == NULL) {
|
|---|
| 99 | rc = irc_init();
|
|---|
| 100 | if (rc != EOK)
|
|---|
| 101 | return rc;
|
|---|
| 102 | }
|
|---|
| 103 |
|
|---|
| 104 | async_exch_t *exch = async_exchange_begin(irc_sess);
|
|---|
| 105 | rc = async_req_1_0(exch, IRC_CLEAR_INTERRUPT, irq);
|
|---|
| 106 | async_exchange_end(exch);
|
|---|
| 107 |
|
|---|
| 108 | return rc;
|
|---|
| 109 | }
|
|---|
| 110 |
|
|---|
| 111 | /** @}
|
|---|
| 112 | */
|
|---|
