Rev 2265 | Rev 2307 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 2292 | hudecek | 1 | /* |
| 2 | * Copyright (c) 2006 Jakub Jermar |
||
| 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 genericddi |
||
| 30 | * @{ |
||
| 31 | */ |
||
| 32 | /** @file |
||
| 33 | */ |
||
| 34 | |||
| 35 | #ifndef KERN_IRQ_H_ |
||
| 36 | #define KERN_IRQ_H_ |
||
| 37 | |||
| 38 | typedef enum { |
||
| 39 | CMD_MEM_READ_1 = 0, |
||
| 40 | CMD_MEM_READ_2, |
||
| 41 | CMD_MEM_READ_4, |
||
| 42 | CMD_MEM_READ_8, |
||
| 43 | CMD_MEM_WRITE_1, |
||
| 44 | CMD_MEM_WRITE_2, |
||
| 45 | CMD_MEM_WRITE_4, |
||
| 46 | CMD_MEM_WRITE_8, |
||
| 47 | CMD_PORT_READ_1, |
||
| 48 | CMD_PORT_WRITE_1, |
||
| 49 | CMD_IA64_GETCHAR, |
||
| 50 | CMD_PPC32_GETCHAR, |
||
| 51 | CMD_LAST |
||
| 52 | } irq_cmd_type; |
||
| 53 | |||
| 54 | typedef struct { |
||
| 55 | irq_cmd_type cmd; |
||
| 56 | void *addr; |
||
| 57 | unsigned long long value; |
||
| 58 | int dstarg; |
||
| 59 | } irq_cmd_t; |
||
| 60 | |||
| 61 | typedef struct { |
||
| 62 | unsigned int cmdcount; |
||
| 63 | irq_cmd_t *cmds; |
||
| 64 | } irq_code_t; |
||
| 65 | |||
| 66 | #ifdef KERNEL |
||
| 67 | |||
| 68 | #include <arch/types.h> |
||
| 69 | #include <adt/list.h> |
||
| 70 | #include <synch/spinlock.h> |
||
| 71 | #include <proc/task.h> |
||
| 72 | |||
| 73 | typedef enum { |
||
| 74 | IRQ_DECLINE, /**< Decline to service. */ |
||
| 75 | IRQ_ACCEPT /**< Accept to service. */ |
||
| 76 | } irq_ownership_t; |
||
| 77 | |||
| 78 | typedef enum { |
||
| 79 | IRQ_TRIGGER_LEVEL = 1, |
||
| 80 | IRQ_TRIGGER_EDGE |
||
| 81 | } irq_trigger_t; |
||
| 82 | |||
| 83 | struct irq; |
||
| 84 | typedef void (* irq_handler_t)(struct irq *irq, void *arg, ...); |
||
| 85 | |||
| 86 | /** IPC notification config structure. |
||
| 87 | * |
||
| 88 | * Primarily, this structure is encapsulated in the irq_t structure. |
||
| 89 | * It is protected by irq_t::lock. |
||
| 90 | */ |
||
| 91 | typedef struct { |
||
| 92 | /** When false, notifications are not sent. */ |
||
| 93 | bool notify; |
||
| 94 | /** Answerbox for notifications. */ |
||
| 95 | answerbox_t *answerbox; |
||
| 96 | /** Method to be used for the notification. */ |
||
| 97 | unative_t method; |
||
| 98 | /** Top-half pseudocode. */ |
||
| 99 | irq_code_t *code; |
||
| 100 | /** Counter. */ |
||
| 101 | count_t counter; |
||
| 102 | /** |
||
| 103 | * Link between IRQs that are notifying the same answerbox. The list is |
||
| 104 | * protected by the answerbox irq_lock. |
||
| 105 | */ |
||
| 106 | link_t link; |
||
| 107 | } ipc_notif_cfg_t; |
||
| 108 | |||
| 109 | /** Structure representing one device IRQ. |
||
| 110 | * |
||
| 111 | * If one device has multiple interrupts, there will be multiple irq_t |
||
| 112 | * instantions with the same devno. |
||
| 113 | */ |
||
| 114 | typedef struct irq { |
||
| 115 | /** Hash table link. */ |
||
| 116 | link_t link; |
||
| 117 | |||
| 118 | /** Lock protecting everything in this structure |
||
| 119 | * except the link member. When both the IRQ |
||
| 120 | * hash table lock and this lock are to be acquired, |
||
| 121 | * this lock must not be taken first. |
||
| 122 | */ |
||
| 123 | SPINLOCK_DECLARE(lock); |
||
| 124 | |||
| 125 | /** Unique device number. -1 if not yet assigned. */ |
||
| 126 | devno_t devno; |
||
| 127 | |||
| 128 | /** Actual IRQ number. -1 if not yet assigned. */ |
||
| 129 | inr_t inr; |
||
| 130 | /** Trigger level of the IRQ.*/ |
||
| 131 | irq_trigger_t trigger; |
||
| 132 | /** Claim ownership of the IRQ. */ |
||
| 133 | irq_ownership_t (* claim)(void); |
||
| 134 | /** Handler for this IRQ and device. */ |
||
| 135 | irq_handler_t handler; |
||
| 136 | /** Argument for the handler. */ |
||
| 137 | void *arg; |
||
| 138 | |||
| 139 | /** Notification configuration structure. */ |
||
| 140 | ipc_notif_cfg_t notif_cfg; |
||
| 141 | } irq_t; |
||
| 142 | |||
| 143 | extern void irq_init(count_t inrs, count_t chains); |
||
| 144 | extern void irq_initialize(irq_t *irq); |
||
| 145 | extern void irq_register(irq_t *irq); |
||
| 146 | extern irq_t *irq_dispatch_and_lock(inr_t inr); |
||
| 147 | extern irq_t *irq_find_and_lock(inr_t inr, devno_t devno); |
||
| 148 | |||
| 149 | #endif |
||
| 150 | |||
| 151 | #endif |
||
| 152 | |||
| 153 | /** @} |
||
| 154 | */ |