| 0,0 → 1,162 |
|---|
| /* |
| * Copyright (c) 2006 Jakub Jermar |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| /** @addtogroup genericddi |
| * @{ |
| */ |
| /** @file |
| */ |
| |
| #ifndef KERN_IRQ_H_ |
| #define KERN_IRQ_H_ |
| |
| typedef enum { |
| CMD_MEM_READ_1 = 0, |
| CMD_MEM_READ_2, |
| CMD_MEM_READ_4, |
| CMD_MEM_READ_8, |
| CMD_MEM_WRITE_1, |
| CMD_MEM_WRITE_2, |
| CMD_MEM_WRITE_4, |
| CMD_MEM_WRITE_8, |
| CMD_PORT_READ_1, |
| CMD_PORT_WRITE_1, |
| CMD_IA64_GETCHAR, |
| CMD_PPC32_GETCHAR, |
| CMD_LAST |
| } irq_cmd_type; |
| |
| typedef struct { |
| irq_cmd_type cmd; |
| void *addr; |
| unsigned long long value; |
| int dstarg; |
| } irq_cmd_t; |
| |
| typedef struct { |
| unsigned int cmdcount; |
| irq_cmd_t *cmds; |
| } irq_code_t; |
| |
| #ifdef KERNEL |
| |
| #include <arch/types.h> |
| #include <adt/list.h> |
| #include <synch/spinlock.h> |
| #include <proc/task.h> |
| |
| typedef enum { |
| IRQ_DECLINE, /**< Decline to service. */ |
| IRQ_ACCEPT /**< Accept to service. */ |
| } irq_ownership_t; |
| |
| typedef enum { |
| IRQ_TRIGGER_LEVEL = 1, |
| IRQ_TRIGGER_EDGE |
| } irq_trigger_t; |
| |
| struct irq; |
| typedef void (* irq_handler_t)(struct irq *irq, void *arg, ...); |
| |
| /** IPC notification config structure. |
| * |
| * Primarily, this structure is encapsulated in the irq_t structure. |
| * It is protected by irq_t::lock. |
| */ |
| typedef struct { |
| /** When false, notifications are not sent. */ |
| bool notify; |
| /** Answerbox for notifications. */ |
| answerbox_t *answerbox; |
| /** Method to be used for the notification. */ |
| unative_t method; |
| /** Top-half pseudocode. */ |
| irq_code_t *code; |
| /** Counter. */ |
| count_t counter; |
| /** |
| * Link between IRQs that are notifying the same answerbox. The list is |
| * protected by the answerbox irq_lock. |
| */ |
| link_t link; |
| } ipc_notif_cfg_t; |
| |
| /** Structure representing one device IRQ. |
| * |
| * If one device has multiple interrupts, there will be multiple irq_t |
| * instantions with the same devno. |
| */ |
| typedef struct irq { |
| /** Hash table link. */ |
| link_t link; |
| |
| /** Lock protecting everything in this structure |
| * except the link member. When both the IRQ |
| * hash table lock and this lock are to be acquired, |
| * this lock must not be taken first. |
| */ |
| SPINLOCK_DECLARE(lock); |
| |
| /** Send EOI before processing the interrupt. |
| * This is essential for timer interrupt which |
| * has to be acknowledged before doing preemption |
| * to make sure another timer interrupt will |
| * be eventually generated. |
| */ |
| bool preack; |
| |
| /** Unique device number. -1 if not yet assigned. */ |
| devno_t devno; |
| |
| /** Actual IRQ number. -1 if not yet assigned. */ |
| inr_t inr; |
| /** Trigger level of the IRQ. */ |
| irq_trigger_t trigger; |
| /** Claim ownership of the IRQ. */ |
| irq_ownership_t (* claim)(void); |
| /** Handler for this IRQ and device. */ |
| irq_handler_t handler; |
| /** Argument for the handler. */ |
| void *arg; |
| |
| /** Notification configuration structure. */ |
| ipc_notif_cfg_t notif_cfg; |
| } irq_t; |
| |
| extern void irq_init(count_t inrs, count_t chains); |
| extern void irq_initialize(irq_t *irq); |
| extern void irq_register(irq_t *irq); |
| extern irq_t *irq_dispatch_and_lock(inr_t inr); |
| extern irq_t *irq_find_and_lock(inr_t inr, devno_t devno); |
| |
| #endif |
| |
| #endif |
| |
| /** @} |
| */ |