WebSVN – HelenOS – Diff – /trunk/kernel/arch/ia32/src/interrupt.c


/*
 * Copyright (c) 2001-2004 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 ia32interrupt
 * @{
 */
/** @file
 */
 
#include <arch/interrupt.h>
#include <syscall/syscall.h>
#include <print.h>
#include <debug.h>
#include <panic.h>
#include <arch/drivers/i8259.h>
#include <func.h>
#include <cpu.h>
#include <arch/asm.h>
#include <mm/tlb.h>
#include <mm/as.h>
#include <arch.h>
#include <symtab.h>
#include <proc/thread.h>
#include <proc/task.h>
#include <synch/spinlock.h>
#include <arch/ddi/ddi.h>
#include <ipc/sysipc.h>
#include <interrupt.h>
#include <ddi/irq.h>
 
/*
 * Interrupt and exception dispatching.
 */
 
void (* disable_irqs_function)(uint16_t irqmask) = NULL;
void (* enable_irqs_function)(uint16_t irqmask) = NULL;
void (* eoi_function)(void) = NULL;
 
void decode_istate(istate_t *istate)
{
    char *symbol = get_symtab_entry(istate->eip);
 
    if (!symbol)
        symbol = "";
 
    if (CPU)
        printf("----------------EXCEPTION OCCURED (cpu%u)----------------\n", CPU->id);
    else
        printf("----------------EXCEPTION OCCURED----------------\n");
       
    printf("%%eip: %#lx (%s)\n", istate->eip, symbol);
    printf("ERROR_WORD=%#lx\n", istate->error_word);
    printf("%%cs=%#lx,flags=%#lx\n", istate->cs, istate->eflags);
    printf("%%eax=%#lx, %%ecx=%#lx, %%edx=%#lx, %%esp=%p\n", istate->eax, istate->ecx, istate->edx, &istate->stack[0]);
#ifdef CONFIG_DEBUG_ALLREGS
    printf("%%esi=%#lx, %%edi=%#lx, %%ebp=%#lx, %%ebx=%#lx\n", istate->esi, istate->edi, istate->ebp, istate->ebx);
#endif
    printf("stack: %#lx, %#lx, %#lx, %#lx\n", istate->stack[0], istate->stack[1], istate->stack[2], istate->stack[3]);
    printf("       %#lx, %#lx, %#lx, %#lx\n", istate->stack[4], istate->stack[5], istate->stack[6], istate->stack[7]);
}
 
static void trap_virtual_eoi(void)
{
    if (eoi_function)
        eoi_function();
    else
        panic("No eoi_function.");
 
}
 
static void null_interrupt(int n, istate_t *istate)
{
    fault_if_from_uspace(istate, "Unserviced interrupt: %d.", n);
 
    decode_istate(istate);
    panic("Unserviced interrupt: %d.", n);
}
 
/** General Protection Fault. */
static void gp_fault(int n __attribute__((unused)), istate_t *istate)
{
    if (TASK) {
        count_t ver;
       
        spinlock_lock(&TASK->lock);
        ver = TASK->arch.iomapver;
        spinlock_unlock(&TASK->lock);
   
        if (CPU->arch.iomapver_copy != ver) {
            /*
             * This fault can be caused by an early access
             * to I/O port because of an out-dated
             * I/O Permission bitmap installed on CPU.
             * Install the fresh copy and restart
             * the instruction.
             */
            io_perm_bitmap_install();
            return;
        }
        fault_if_from_uspace(istate, "General protection fault.");
    }
 
    decode_istate(istate);
    panic("General protection fault.");
}
 
static void ss_fault(int n __attribute__((unused)), istate_t *istate)
{
    fault_if_from_uspace(istate, "Stack fault.");
 
    decode_istate(istate);
    panic("Stack fault.");
}
 
static void simd_fp_exception(int n __attribute__((unused)), istate_t *istate)
{
    uint32_t mxcsr;
    asm (
        "stmxcsr %0;\n"
        : "=m" (mxcsr)
    );
    fault_if_from_uspace(istate, "SIMD FP exception(19), MXCSR: %#zx.",
        (unative_t) mxcsr);
 
    decode_istate(istate);
    printf("MXCSR: %#lx\n", mxcsr);
    panic("SIMD FP exception(19).");
}
 
static void nm_fault(int n __attribute__((unused)), istate_t *istate __attribute__((unused)))
{
#ifdef CONFIG_FPU_LAZY     
    scheduler_fpu_lazy_request();
#else
    fault_if_from_uspace(istate, "FPU fault.");
    panic("FPU fault.");
#endif
}
 
#ifdef CONFIG_SMP
static void tlb_shootdown_ipi(int n __attribute__((unused)), istate_t *istate __attribute__((unused)))
{
    trap_virtual_eoi();
    tlb_shootdown_ipi_recv();
}
#endif
 
/** Handler of IRQ exceptions */
static void irq_interrupt(int n, istate_t *istate __attribute__((unused)))
{
    ASSERT(n >= IVT_IRQBASE);
   
    int inum = n - IVT_IRQBASE;
    bool ack = false;
    ASSERT(inum < IRQ_COUNT);
    ASSERT((inum != IRQ_PIC_SPUR) && (inum != IRQ_PIC1));
   
    irq_t *irq = irq_dispatch_and_lock(inum);
    if (irq) {
        /*
         * The IRQ handler was found.
         */
         
        if (irq->preack) {
            /* Send EOI before processing the interrupt */
            trap_virtual_eoi();
            ack = true;
        }
        irq->handler(irq, irq->arg);
        spinlock_unlock(&irq->lock);
    } else {
        /*
         * Spurious interrupt.
         */
#ifdef CONFIG_DEBUG
        printf("cpu%u: spurious interrupt (inum=%d)\n", CPU->id, inum);
#endif
    }
   
    if (!ack)
        trap_virtual_eoi();
}
 
void interrupt_init(void)
{
    int i;
   
    for (i = 0; i < IVT_ITEMS; i++)
        exc_register(i, "null", (iroutine) null_interrupt);
   
    for (i = 0; i < IRQ_COUNT; i++) {
        if ((i != IRQ_PIC_SPUR) && (i != IRQ_PIC1))
            exc_register(IVT_IRQBASE + i, "irq", (iroutine) irq_interrupt);
    }
   
    exc_register(7, "nm_fault", (iroutine) nm_fault);
    exc_register(12, "ss_fault", (iroutine) ss_fault);
    exc_register(13, "gp_fault", (iroutine) gp_fault);
    exc_register(19, "simd_fp", (iroutine) simd_fp_exception);
   
#ifdef CONFIG_SMP
    exc_register(VECTOR_TLB_SHOOTDOWN_IPI, "tlb_shootdown", (iroutine) tlb_shootdown_ipi);
#endif
}
 
void trap_virtual_enable_irqs(uint16_t irqmask)
{
    if (enable_irqs_function)
        enable_irqs_function(irqmask);
    else
        panic("No enable_irqs_function.");
}
 
void trap_virtual_disable_irqs(uint16_t irqmask)
{
    if (disable_irqs_function)
        disable_irqs_function(irqmask);
    else
        panic("No disable_irqs_function.");
}
 
/** @}
 */
 

Rev 3788	Rev 3790
1	/*	1	/*
2	* Copyright (c) 2001-2004 Jakub Jermar	2	* Copyright (c) 2001-2004 Jakub Jermar
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 ia32interrupt	29	/** @addtogroup ia32interrupt
30	* @{	30	* @{
31	*/	31	*/
32	/** @file	32	/** @file
33	*/	33	*/
34		34
35	#include <arch/interrupt.h>	35	#include <arch/interrupt.h>
36	#include <syscall/syscall.h>	36	#include <syscall/syscall.h>
37	#include <print.h>	37	#include <print.h>
38	#include <debug.h>	38	#include <debug.h>
39	#include <panic.h>	39	#include <panic.h>
40	#include <arch/drivers/i8259.h>	40	#include <arch/drivers/i8259.h>
41	#include <func.h>	41	#include <func.h>
42	#include <cpu.h>	42	#include <cpu.h>
43	#include <arch/asm.h>	43	#include <arch/asm.h>
44	#include <mm/tlb.h>	44	#include <mm/tlb.h>
45	#include <mm/as.h>	45	#include <mm/as.h>
46	#include <arch.h>	46	#include <arch.h>
47	#include <symtab.h>	47	#include <symtab.h>
48	#include <proc/thread.h>	48	#include <proc/thread.h>
49	#include <proc/task.h>	49	#include <proc/task.h>
50	#include <synch/spinlock.h>	50	#include <synch/spinlock.h>
51	#include <arch/ddi/ddi.h>	51	#include <arch/ddi/ddi.h>
52	#include <ipc/sysipc.h>	52	#include <ipc/sysipc.h>
53	#include <interrupt.h>	53	#include <interrupt.h>
54	#include <ddi/irq.h>	54	#include <ddi/irq.h>
55		55
56	/*	56	/*
57	* Interrupt and exception dispatching.	57	* Interrupt and exception dispatching.
58	*/	58	*/
59		59
60	void (* disable_irqs_function)(uint16_t irqmask) = NULL;	60	void (* disable_irqs_function)(uint16_t irqmask) = NULL;
61	void (* enable_irqs_function)(uint16_t irqmask) = NULL;	61	void (* enable_irqs_function)(uint16_t irqmask) = NULL;
62	void (* eoi_function)(void) = NULL;	62	void (* eoi_function)(void) = NULL;
63		63
64	void decode_istate(istate_t *istate)	64	void decode_istate(istate_t *istate)
65	{	65	{
66	char *symbol = get_symtab_entry(istate->eip);	66	char *symbol = get_symtab_entry(istate->eip);
67		67
68	if (!symbol)	68	if (!symbol)
69	symbol = "";	69	symbol = "";
70		70
71	if (CPU)	71	if (CPU)
72	printf("----------------EXCEPTION OCCURED (cpu%u)----------------\n", CPU->id);	72	printf("----------------EXCEPTION OCCURED (cpu%u)----------------\n", CPU->id);
73	else	73	else
74	printf("----------------EXCEPTION OCCURED----------------\n");	74	printf("----------------EXCEPTION OCCURED----------------\n");
75		75
76	printf("%%eip: %#lx (%s)\n", istate->eip, symbol);	76	printf("%%eip: %#lx (%s)\n", istate->eip, symbol);
77	printf("ERROR_WORD=%#lx\n", istate->error_word);	77	printf("ERROR_WORD=%#lx\n", istate->error_word);
78	printf("%%cs=%#lx,flags=%#lx\n", istate->cs, istate->eflags);	78	printf("%%cs=%#lx,flags=%#lx\n", istate->cs, istate->eflags);
79	printf("%%eax=%#lx, %%ecx=%#lx, %%edx=%#lx, %%esp=%p\n", istate->eax, istate->ecx, istate->edx, &istate->stack[0]);	79	printf("%%eax=%#lx, %%ecx=%#lx, %%edx=%#lx, %%esp=%p\n", istate->eax, istate->ecx, istate->edx, &istate->stack[0]);
80	#ifdef CONFIG_DEBUG_ALLREGS	80	#ifdef CONFIG_DEBUG_ALLREGS
81	printf("%%esi=%#lx, %%edi=%#lx, %%ebp=%#lx, %%ebx=%#lx\n", istate->esi, istate->edi, istate->ebp, istate->ebx);	81	printf("%%esi=%#lx, %%edi=%#lx, %%ebp=%#lx, %%ebx=%#lx\n", istate->esi, istate->edi, istate->ebp, istate->ebx);
82	#endif	82	#endif
83	printf("stack: %#lx, %#lx, %#lx, %#lx\n", istate->stack[0], istate->stack[1], istate->stack[2], istate->stack[3]);	83	printf("stack: %#lx, %#lx, %#lx, %#lx\n", istate->stack[0], istate->stack[1], istate->stack[2], istate->stack[3]);
84	printf(" %#lx, %#lx, %#lx, %#lx\n", istate->stack[4], istate->stack[5], istate->stack[6], istate->stack[7]);	84	printf(" %#lx, %#lx, %#lx, %#lx\n", istate->stack[4], istate->stack[5], istate->stack[6], istate->stack[7]);
85	}	85	}
86		86
87	static void trap_virtual_eoi(void)	87	static void trap_virtual_eoi(void)
88	{	88	{
89	if (eoi_function)	89	if (eoi_function)
90	eoi_function();	90	eoi_function();
91	else	91	else
92	panic("no eoi_function\n");	92	panic("No eoi_function.");
93		93
94	}	94	}
95		95
96	static void null_interrupt(int n, istate_t *istate)	96	static void null_interrupt(int n, istate_t *istate)
97	{	97	{
98	fault_if_from_uspace(istate, "Unserviced interrupt: %d", n);	98	fault_if_from_uspace(istate, "Unserviced interrupt: %d.", n);
99		99
100	decode_istate(istate);	100	decode_istate(istate);
101	panic("Unserviced interrupt: %d\n", n);	101	panic("Unserviced interrupt: %d.", n);
102	}	102	}
103		103
104	/** General Protection Fault. */	104	/** General Protection Fault. */
105	static void gp_fault(int n __attribute__((unused)), istate_t *istate)	105	static void gp_fault(int n __attribute__((unused)), istate_t *istate)
106	{	106	{
107	if (TASK) {	107	if (TASK) {
108	count_t ver;	108	count_t ver;
109		109
110	spinlock_lock(&TASK->lock);	110	spinlock_lock(&TASK->lock);
111	ver = TASK->arch.iomapver;	111	ver = TASK->arch.iomapver;
112	spinlock_unlock(&TASK->lock);	112	spinlock_unlock(&TASK->lock);
113		113
114	if (CPU->arch.iomapver_copy != ver) {	114	if (CPU->arch.iomapver_copy != ver) {
115	/*	115	/*
116	* This fault can be caused by an early access	116	* This fault can be caused by an early access
117	* to I/O port because of an out-dated	117	* to I/O port because of an out-dated
118	* I/O Permission bitmap installed on CPU.	118	* I/O Permission bitmap installed on CPU.
119	* Install the fresh copy and restart	119	* Install the fresh copy and restart
120	* the instruction.	120	* the instruction.
121	*/	121	*/
122	io_perm_bitmap_install();	122	io_perm_bitmap_install();
123	return;	123	return;
124	}	124	}
125	fault_if_from_uspace(istate, "General protection fault");	125	fault_if_from_uspace(istate, "General protection fault.");
126	}	126	}
127		127
128	decode_istate(istate);	128	decode_istate(istate);
129	panic("General protection fault\n");	129	panic("General protection fault.");
130	}	130	}
131		131
132	static void ss_fault(int n __attribute__((unused)), istate_t *istate)	132	static void ss_fault(int n __attribute__((unused)), istate_t *istate)
133	{	133	{
134	fault_if_from_uspace(istate, "Stack fault");	134	fault_if_from_uspace(istate, "Stack fault.");
135		135
136	decode_istate(istate);	136	decode_istate(istate);
137	panic("Stack fault\n");	137	panic("Stack fault.");
138	}	138	}
139		139
140	static void simd_fp_exception(int n __attribute__((unused)), istate_t *istate)	140	static void simd_fp_exception(int n __attribute__((unused)), istate_t *istate)
141	{	141	{
142	uint32_t mxcsr;	142	uint32_t mxcsr;
143	asm (	143	asm (
144	"stmxcsr %0;\n"	144	"stmxcsr %0;\n"
145	: "=m" (mxcsr)	145	: "=m" (mxcsr)
146	);	146	);
147	fault_if_from_uspace(istate, "SIMD FP exception(19), MXCSR: %#zx",	147	fault_if_from_uspace(istate, "SIMD FP exception(19), MXCSR: %#zx.",
148	(unative_t) mxcsr);	148	(unative_t) mxcsr);
149		149
150	decode_istate(istate);	150	decode_istate(istate);
151	printf("MXCSR: %#lx\n", mxcsr);	151	printf("MXCSR: %#lx\n", mxcsr);
152	panic("SIMD FP exception(19)\n");	152	panic("SIMD FP exception(19).");
153	}	153	}
154		154
155	static void nm_fault(int n __attribute__((unused)), istate_t *istate __attribute__((unused)))	155	static void nm_fault(int n __attribute__((unused)), istate_t *istate __attribute__((unused)))
156	{	156	{
157	#ifdef CONFIG_FPU_LAZY	157	#ifdef CONFIG_FPU_LAZY
158	scheduler_fpu_lazy_request();	158	scheduler_fpu_lazy_request();
159	#else	159	#else
160	fault_if_from_uspace(istate, "FPU fault");	160	fault_if_from_uspace(istate, "FPU fault.");
161	panic("FPU fault");	161	panic("FPU fault.");
162	#endif	162	#endif
163	}	163	}
164		164
165	#ifdef CONFIG_SMP	165	#ifdef CONFIG_SMP
166	static void tlb_shootdown_ipi(int n __attribute__((unused)), istate_t *istate __attribute__((unused)))	166	static void tlb_shootdown_ipi(int n __attribute__((unused)), istate_t *istate __attribute__((unused)))
167	{	167	{
168	trap_virtual_eoi();	168	trap_virtual_eoi();
169	tlb_shootdown_ipi_recv();	169	tlb_shootdown_ipi_recv();
170	}	170	}
171	#endif	171	#endif
172		172
173	/** Handler of IRQ exceptions */	173	/** Handler of IRQ exceptions */
174	static void irq_interrupt(int n, istate_t *istate __attribute__((unused)))	174	static void irq_interrupt(int n, istate_t *istate __attribute__((unused)))
175	{	175	{
176	ASSERT(n >= IVT_IRQBASE);	176	ASSERT(n >= IVT_IRQBASE);
177		177
178	int inum = n - IVT_IRQBASE;	178	int inum = n - IVT_IRQBASE;
179	bool ack = false;	179	bool ack = false;
180	ASSERT(inum < IRQ_COUNT);	180	ASSERT(inum < IRQ_COUNT);
181	ASSERT((inum != IRQ_PIC_SPUR) && (inum != IRQ_PIC1));	181	ASSERT((inum != IRQ_PIC_SPUR) && (inum != IRQ_PIC1));
182		182
183	irq_t *irq = irq_dispatch_and_lock(inum);	183	irq_t *irq = irq_dispatch_and_lock(inum);
184	if (irq) {	184	if (irq) {
185	/*	185	/*
186	* The IRQ handler was found.	186	* The IRQ handler was found.
187	*/	187	*/
188		188
189	if (irq->preack) {	189	if (irq->preack) {
190	/* Send EOI before processing the interrupt */	190	/* Send EOI before processing the interrupt */
191	trap_virtual_eoi();	191	trap_virtual_eoi();
192	ack = true;	192	ack = true;
193	}	193	}
194	irq->handler(irq, irq->arg);	194	irq->handler(irq, irq->arg);
195	spinlock_unlock(&irq->lock);	195	spinlock_unlock(&irq->lock);
196	} else {	196	} else {
197	/*	197	/*
198	* Spurious interrupt.	198	* Spurious interrupt.
199	*/	199	*/
200	#ifdef CONFIG_DEBUG	200	#ifdef CONFIG_DEBUG
201	printf("cpu%u: spurious interrupt (inum=%d)\n", CPU->id, inum);	201	printf("cpu%u: spurious interrupt (inum=%d)\n", CPU->id, inum);
202	#endif	202	#endif
203	}	203	}
204		204
205	if (!ack)	205	if (!ack)
206	trap_virtual_eoi();	206	trap_virtual_eoi();
207	}	207	}
208		208
209	void interrupt_init(void)	209	void interrupt_init(void)
210	{	210	{
211	int i;	211	int i;
212		212
213	for (i = 0; i < IVT_ITEMS; i++)	213	for (i = 0; i < IVT_ITEMS; i++)
214	exc_register(i, "null", (iroutine) null_interrupt);	214	exc_register(i, "null", (iroutine) null_interrupt);
215		215
216	for (i = 0; i < IRQ_COUNT; i++) {	216	for (i = 0; i < IRQ_COUNT; i++) {
217	if ((i != IRQ_PIC_SPUR) && (i != IRQ_PIC1))	217	if ((i != IRQ_PIC_SPUR) && (i != IRQ_PIC1))
218	exc_register(IVT_IRQBASE + i, "irq", (iroutine) irq_interrupt);	218	exc_register(IVT_IRQBASE + i, "irq", (iroutine) irq_interrupt);
219	}	219	}
220		220
221	exc_register(7, "nm_fault", (iroutine) nm_fault);	221	exc_register(7, "nm_fault", (iroutine) nm_fault);
222	exc_register(12, "ss_fault", (iroutine) ss_fault);	222	exc_register(12, "ss_fault", (iroutine) ss_fault);
223	exc_register(13, "gp_fault", (iroutine) gp_fault);	223	exc_register(13, "gp_fault", (iroutine) gp_fault);
224	exc_register(19, "simd_fp", (iroutine) simd_fp_exception);	224	exc_register(19, "simd_fp", (iroutine) simd_fp_exception);
225		225
226	#ifdef CONFIG_SMP	226	#ifdef CONFIG_SMP
227	exc_register(VECTOR_TLB_SHOOTDOWN_IPI, "tlb_shootdown", (iroutine) tlb_shootdown_ipi);	227	exc_register(VECTOR_TLB_SHOOTDOWN_IPI, "tlb_shootdown", (iroutine) tlb_shootdown_ipi);
228	#endif	228	#endif
229	}	229	}
230		230
231	void trap_virtual_enable_irqs(uint16_t irqmask)	231	void trap_virtual_enable_irqs(uint16_t irqmask)
232	{	232	{
233	if (enable_irqs_function)	233	if (enable_irqs_function)
234	enable_irqs_function(irqmask);	234	enable_irqs_function(irqmask);
235	else	235	else
236	panic("no enable_irqs_function\n");	236	panic("No enable_irqs_function.");
237	}	237	}
238		238
239	void trap_virtual_disable_irqs(uint16_t irqmask)	239	void trap_virtual_disable_irqs(uint16_t irqmask)
240	{	240	{
241	if (disable_irqs_function)	241	if (disable_irqs_function)
242	disable_irqs_function(irqmask);	242	disable_irqs_function(irqmask);
243	else	243	else
244	panic("no disable_irqs_function\n");	244	panic("No disable_irqs_function.");
245	}	245	}
246		246
247	/** @}	247	/** @}
248	*/	248	*/
249		249

Subversion Repositories HelenOS

(root)/trunk/kernel/arch/ia32/src/interrupt.c – Rev 3788 → 3790