WebSVN – HelenOS-historic – Diff – /kernel/trunk/arch/ppc32/src/interrupt.c


/*
 * Copyright (C) 2006 Martin Decky
 * 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 ppc32interrupt
 * @{
 */
/** @file
 */
 
#include <interrupt.h>
#include <arch/interrupt.h>
#include <arch/types.h>
#include <arch.h>
#include <time/clock.h>
#include <ipc/sysipc.h>
#include <arch/drivers/pic.h>
#include <arch/mm/tlb.h>
 
 
void start_decrementer(void)
{
    asm volatile (
        "mtdec %0\n"
        :
        : "r" (1000)
    );
}
 
 
/** Handler of external interrupts */
static void exception_external(int n, istate_t *istate)
{
    int inum;
 
    while ((inum = pic_get_pending()) != -1) {
        exc_dispatch(inum + INT_OFFSET, istate);
        pic_ack_interrupt(inum);
    }
}
 
 
static void exception_decrementer(int n, istate_t *istate)
{
    clock();
    start_decrementer();
}
 
 
/* Initialize basic tables for exception dispatching */
void interrupt_init(void)
{
    exc_register(VECTOR_DATA_STORAGE, "data_storage", pht_refill);
    exc_register(VECTOR_INSTRUCTION_STORAGE, "instruction_storage", pht_refill);
    exc_register(VECTOR_EXTERNAL, "external", exception_external);
    exc_register(VECTOR_DECREMENTER, "timer", exception_decrementer);
}
 
 
static void ipc_int(int n, istate_t *istate)
{
    ipc_irq_send_notif(n - INT_OFFSET);
}
 
 
/* Reregister irq to be IPC-ready */
void irq_ipc_bind_arch(__native irq)
{
    int_register(irq, "ipc_int", ipc_int);
}
 
/** @}
 */
 
 

Subversion Repositories HelenOS-historic

(root)/kernel/trunk/arch/ppc32/src/interrupt.c – Rev 1705 → 1730

Rev 1705		Rev 1730
1	/*	1	/*
2	* Copyright (C) 2006 Martin Decky	2	* Copyright (C) 2006 Martin Decky
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions	6	* modification, are permitted provided that the following conditions
7	* are met:	7	* are met:
8	*	8	*
9	* - Redistributions of source code must retain the above copyright	9	* - Redistributions of source code must retain the above copyright
10	* notice, this list of conditions and the following disclaimer.	10	* notice, this list of conditions and the following disclaimer.
11	* - Redistributions in binary form must reproduce the above copyright	11	* - Redistributions in binary form must reproduce the above copyright
12	* notice, this list of conditions and the following disclaimer in the	12	* notice, this list of conditions and the following disclaimer in the
13	* documentation and/or other materials provided with the distribution.	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	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.	15	* derived from this software without specific prior written permission.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	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	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	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	23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	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	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.	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27	*/	27	*/
28		28
29	/** @addtogroup ppc32interrupt	29	/** @addtogroup ppc32interrupt
30	* @{	30	* @{
31	*/	31	*/
32	/** @file	32	/** @file
33	*/	33	*/
34		34
35	#include <interrupt.h>	35	#include <interrupt.h>
36	#include <arch/interrupt.h>	36	#include <arch/interrupt.h>
37	#include <arch/types.h>	37	#include <arch/types.h>
38	#include <arch.h>	38	#include <arch.h>
39	#include <time/clock.h>	39	#include <time/clock.h>
40	#include <ipc/sysipc.h>	40	#include <ipc/sysipc.h>
41	#include <arch/drivers/pic.h>	41	#include <arch/drivers/pic.h>
-		42	#include <arch/mm/tlb.h>
42		43
43		44
44	void start_decrementer(void)	45	void start_decrementer(void)
45	{	46	{
46	asm volatile (	47	asm volatile (
47	"mtdec %0\n"	48	"mtdec %0\n"
48	:	49	:
49	: "r" (1000)	50	: "r" (1000)
50	);	51	);
51	}	52	}
52		53
53		54
54	/** Handler of external interrupts */	55	/** Handler of external interrupts */
55	static void exception_external(int n, istate_t *istate)	56	static void exception_external(int n, istate_t *istate)
56	{	57	{
57	int inum;	58	int inum;
58		59
59	while ((inum = pic_get_pending()) != -1) {	60	while ((inum = pic_get_pending()) != -1) {
60	exc_dispatch(inum + INT_OFFSET, istate);	61	exc_dispatch(inum + INT_OFFSET, istate);
61	pic_ack_interrupt(inum);	62	pic_ack_interrupt(inum);
62	}	63	}
63	}	64	}
64		65
65		66
66	static void exception_decrementer(int n, istate_t *istate)	67	static void exception_decrementer(int n, istate_t *istate)
67	{	68	{
68	clock();	69	clock();
69	start_decrementer();	70	start_decrementer();
70	}	71	}
71		72
72		73
73	/* Initialize basic tables for exception dispatching */	74	/* Initialize basic tables for exception dispatching */
74	void interrupt_init(void)	75	void interrupt_init(void)
75	{	76	{
76	exc_register(VECTOR_DATA_STORAGE, "data_storage", pht_refill);	77	exc_register(VECTOR_DATA_STORAGE, "data_storage", pht_refill);
77	exc_register(VECTOR_INSTRUCTION_STORAGE, "instruction_storage", pht_refill);	78	exc_register(VECTOR_INSTRUCTION_STORAGE, "instruction_storage", pht_refill);
78	exc_register(VECTOR_EXTERNAL, "external", exception_external);	79	exc_register(VECTOR_EXTERNAL, "external", exception_external);
79	exc_register(VECTOR_DECREMENTER, "timer", exception_decrementer);	80	exc_register(VECTOR_DECREMENTER, "timer", exception_decrementer);
80	}	81	}
81		82
82		83
83	static void ipc_int(int n, istate_t *istate)	84	static void ipc_int(int n, istate_t *istate)
84	{	85	{
85	ipc_irq_send_notif(n - INT_OFFSET);	86	ipc_irq_send_notif(n - INT_OFFSET);
86	}	87	}
87		88
88		89
89	/* Reregister irq to be IPC-ready */	90	/* Reregister irq to be IPC-ready */
90	void irq_ipc_bind_arch(__native irq)	91	void irq_ipc_bind_arch(__native irq)
91	{	92	{
92	int_register(irq, "ipc_int", ipc_int);	93	int_register(irq, "ipc_int", ipc_int);
93	}	94	}
94		95
95	/** @}	96	/** @}
96	*/	97	*/
97		-
98		98