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[/] [or1k_old/] [trunk/] [rc203soc/] [sw/] [uClinux/] [arch/] [m68k/] [amiga/] [amiints.c] - Blame information for rev 1782

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/*
 * amiints.c -- Amiga Linux interrupt handling code
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file COPYING in the main directory of this archive
 * for more details.
 *
 */
 
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/sched.h>
 
#include <asm/system.h>
#include <asm/irq.h>
#include <asm/traps.h>
#include <asm/amigahw.h>
#include <asm/amigaints.h>
 
/* isr node variables for amiga interrupt sources */
static isr_node_t *ami_lists[NUM_AMIGA_SOURCES];
 
static const ushort ami_intena_vals[NUM_AMIGA_SOURCES] = {
    IF_VERTB, IF_COPER, IF_AUD0, IF_AUD1, IF_AUD2, IF_AUD3, IF_BLIT,
    IF_DSKSYN, IF_DSKBLK, IF_RBF, IF_TBE, IF_PORTS, IF_PORTS, IF_PORTS,
    IF_PORTS, IF_PORTS, IF_EXTER, IF_EXTER, IF_EXTER, IF_EXTER, IF_EXTER,
    IF_SOFT, IF_PORTS, IF_EXTER
    };
 
struct ciadata
{
    volatile struct CIA *ciaptr;
    unsigned long       baseirq;
} ciadata[2];
 
/*
 * index into ami_lists for IRQs.  CIA IRQs are special, because
 * the same cia interrupt handler is used for both CIAs.
 */
#define IRQ_IDX(source) (source & ~IRQ_MACHSPEC)
#define CIA_IRQ_IDX(source) (IRQ_IDX(datap->baseirq) \
                             +(source-IRQ_AMIGA_CIAA_TA))
 
/*
 * void amiga_init_INTS (void)
 *
 * Parameters:  None
 *
 * Returns:     Nothing
 *
 * This function should be called during kernel startup to initialize
 * the amiga IRQ handling routines.
 */
 
static void
    ami_int1(int irq, struct pt_regs *fp, void *data),
    ami_int2(int irq, struct pt_regs *fp, void *data),
    ami_int3(int irq, struct pt_regs *fp, void *data),
    ami_int4(int irq, struct pt_regs *fp, void *data),
    ami_int5(int irq, struct pt_regs *fp, void *data),
    ami_int6(int irq, struct pt_regs *fp, void *data),
    ami_int7(int irq, struct pt_regs *fp, void *data),
    ami_intcia(int irq, struct pt_regs *fp, void *data);
 
void amiga_init_INTS (void)
{
    int i;
 
    /* initialize handlers */
    for (i = 0; i < NUM_AMIGA_SOURCES; i++)
        ami_lists[i] = NULL;
 
    add_isr (IRQ1, ami_int1, 0, NULL, "int1 handler");
    add_isr (IRQ2, ami_int2, 0, NULL, "int2 handler");
    add_isr (IRQ3, ami_int3, 0, NULL, "int3 handler");
    add_isr (IRQ4, ami_int4, 0, NULL, "int4 handler");
    add_isr (IRQ5, ami_int5, 0, NULL, "int5 handler");
    add_isr (IRQ6, ami_int6, 0, NULL, "int6 handler");
    add_isr (IRQ7, ami_int7, 0, NULL, "int7 handler");
 
    /* hook in the CIA interrupts */
    ciadata[0].ciaptr = &ciaa;
    ciadata[0].baseirq = IRQ_AMIGA_CIAA_TA;
    add_isr (IRQ_AMIGA_PORTS, ami_intcia, 0, NULL, "Amiga CIAA");
    ciadata[1].ciaptr = &ciab;
    ciadata[1].baseirq = IRQ_AMIGA_CIAB_TA;
    add_isr (IRQ_AMIGA_EXTER, ami_intcia, 0, NULL, "Amiga CIAB");
 
    /* turn off all interrupts and enable the master interrupt bit */
    custom.intena = 0x7fff;
    custom.intreq = 0x7fff;
    custom.intena = 0xc000;
 
    /* turn off all CIA interrupts */
    ciaa.icr = 0x7f;
    ciab.icr = 0x7f;
 
    /* clear any pending CIA interrupts */
    i = ciaa.icr;
    i = ciab.icr;
}
 
 
/*
 * The builtin Amiga hardware interrupt handlers.
 */
 
static void ami_int1 (int irq, struct pt_regs *fp, void *data)
{
    ushort ints = custom.intreqr & custom.intenar;
 
    /* if serial transmit buffer empty, interrupt */
    if (ints & IF_TBE) {
        if (ami_lists[IRQ_IDX(IRQ_AMIGA_TBE)]) {
            call_isr_list (IRQ_AMIGA_TBE,
                           ami_lists[IRQ_IDX(IRQ_AMIGA_TBE)], fp);
            /*
             * don't acknowledge....
             * allow serial code to turn off interrupts, but
             * leave it pending so that when interrupts are
             * turned on, transmission will resume
             */
        } else
            /* acknowledge the interrupt */
            custom.intreq = IF_TBE;
    }
 
    /* if floppy disk transfer complete, interrupt */
    if (ints & IF_DSKBLK) {
        call_isr_list (IRQ_AMIGA_DSKBLK,
                       ami_lists[IRQ_IDX(IRQ_AMIGA_DSKBLK)], fp);
 
        /* acknowledge */
        custom.intreq = IF_DSKBLK;
    }
 
    /* if software interrupt set, interrupt */
    if (ints & IF_SOFT) {
        call_isr_list (IRQ_AMIGA_SOFT,
                       ami_lists[IRQ_IDX(IRQ_AMIGA_SOFT)], fp);
 
        /* acknowledge */
        custom.intreq = IF_SOFT;
    }
}
 
static void ami_int2 (int irq, struct pt_regs *fp, void *data)
{
    ushort ints = custom.intreqr & custom.intenar;
 
    if (ints & IF_PORTS) {
        /* call routines which have hooked into the PORTS interrupt */
        call_isr_list (IRQ_AMIGA_PORTS,
                       ami_lists[IRQ_IDX(IRQ_AMIGA_PORTS)], fp);
 
        /* acknowledge */
        custom.intreq = IF_PORTS;
    }
}
 
static void ami_int3 (int irq, struct pt_regs *fp, void *data)
{
    ushort ints = custom.intreqr & custom.intenar;
 
    /* if a copper interrupt */
    if (ints & IF_COPER) {
        call_isr_list (IRQ_AMIGA_COPPER,
                       ami_lists[IRQ_IDX(IRQ_AMIGA_COPPER)], fp);
 
        /* acknowledge */
        custom.intreq = IF_COPER;
    }
 
    /* if a vertical blank interrupt */
    if (ints & IF_VERTB) {
        call_isr_list (IRQ_AMIGA_VERTB,
                       ami_lists[IRQ_IDX(IRQ_AMIGA_VERTB)], fp);
 
        /* acknowledge */
        custom.intreq = IF_VERTB;
    }
 
    /* if a blitter interrupt */
    if (ints & IF_BLIT) {
        call_isr_list (IRQ_AMIGA_BLIT,
                       ami_lists[IRQ_IDX(IRQ_AMIGA_BLIT)], fp);
 
        /* acknowledge */
        custom.intreq = IF_BLIT;
    }
}
 
static void ami_int4 (int irq, struct pt_regs *fp, void *data)
{
    ushort ints = custom.intreqr & custom.intenar;
 
    /* if audio 0 interrupt */
    if (ints & IF_AUD0) {
        call_isr_list (IRQ_AMIGA_AUD0,
                       ami_lists[IRQ_IDX(IRQ_AMIGA_AUD0)], fp);
 
        /* acknowledge */
        custom.intreq = IF_AUD0;
    }
 
    /* if audio 1 interrupt */
    if (ints & IF_AUD1) {
        call_isr_list (IRQ_AMIGA_AUD1,
                       ami_lists[IRQ_IDX(IRQ_AMIGA_AUD1)], fp);
 
        /* acknowledge */
        custom.intreq = IF_AUD1;
    }
 
    /* if audio 2 interrupt */
    if (ints & IF_AUD2) {
        call_isr_list (IRQ_AMIGA_AUD2,
                       ami_lists[IRQ_IDX(IRQ_AMIGA_AUD2)], fp);
 
        /* acknowledge */
        custom.intreq = IF_AUD2;
    }
 
    /* if audio 3 interrupt */
    if (ints & IF_AUD3) {
        call_isr_list (IRQ_AMIGA_AUD3,
                       ami_lists[IRQ_IDX(IRQ_AMIGA_AUD3)], fp);
 
        /* acknowledge */
        custom.intreq = IF_AUD3;
    }
}
 
static void ami_int5 (int irq, struct pt_regs *fp, void *data)
{
    ushort ints = custom.intreqr & custom.intenar;
 
    /* if serial receive buffer full interrupt */
    if (ints & IF_RBF) {
        if (ami_lists[IRQ_IDX(IRQ_AMIGA_RBF)]) {
            call_isr_list (IRQ_AMIGA_RBF,
                           ami_lists[IRQ_IDX(IRQ_AMIGA_RBF)], fp);
            /* don't acknowledge ; leave that for the handler */
        } else
            /* acknowledge the interrupt */
            custom.intreq = IF_RBF;
    }
 
    /* if a disk sync interrupt */
    if (ints & IF_DSKSYN) {
        call_isr_list (IRQ_AMIGA_DSKSYN,
                       ami_lists[IRQ_IDX(IRQ_AMIGA_DSKSYN)], fp);
 
        /* acknowledge */
        custom.intreq = IF_DSKSYN;
    }
}
 
static void ami_int6 (int irq, struct pt_regs *fp, void *data)
{
    ushort ints = custom.intreqr & custom.intenar;
 
    if (ints & IF_EXTER) {
        /* call routines which have hooked into the EXTER interrupt */
        call_isr_list (IRQ_AMIGA_EXTER,
                       ami_lists[IRQ_IDX(IRQ_AMIGA_EXTER)], fp);
 
        /* acknowledge */
        custom.intreq = IF_EXTER;
    }
}
 
static void ami_int7 (int irq, struct pt_regs *fp, void *data)
{
    panic ("level 7 interrupt received\n");
}
 
static void ami_intcia (int irq, struct pt_regs *fp, void *data)
{
    /* check CIA interrupts */
    struct ciadata *datap;
    u_char cia_ints;
 
    /* setup data correctly */
    if (irq == IRQ_AMIGA_PORTS)
            datap = &ciadata[0];
    else
            datap = &ciadata[1];
 
    cia_ints = datap->ciaptr->icr;
 
    /* if timer A interrupt */
    if (cia_ints & CIA_ICR_TA)
        call_isr_list (IRQ_AMIGA_CIAA_TA,
                       ami_lists[CIA_IRQ_IDX(IRQ_AMIGA_CIAA_TA)], fp);
 
    /* if timer B interrupt */
    if (cia_ints & CIA_ICR_TB)
        call_isr_list (IRQ_AMIGA_CIAA_TB,
                       ami_lists[CIA_IRQ_IDX(IRQ_AMIGA_CIAA_TB)], fp);
 
    /* if the alarm interrupt */
    if (cia_ints & CIA_ICR_ALRM)
        call_isr_list (IRQ_AMIGA_CIAA_ALRM,
                       ami_lists[CIA_IRQ_IDX(IRQ_AMIGA_CIAA_ALRM)], fp);
 
    /* if serial port interrupt (keyboard) */
    if (cia_ints & CIA_ICR_SP)
        call_isr_list (IRQ_AMIGA_CIAA_SP,
                       ami_lists[CIA_IRQ_IDX(IRQ_AMIGA_CIAA_SP)], fp);
 
    /* if flag interrupt (parallel port) */
    if (cia_ints & CIA_ICR_FLG)
        call_isr_list (IRQ_AMIGA_CIAA_FLG,
                       ami_lists[CIA_IRQ_IDX(IRQ_AMIGA_CIAA_FLG)], fp);
}
 
/*
 * amiga_add_isr : add an interrupt service routine for a particular
 *                 machine specific interrupt source.
 *                 If the addition was successful, it returns 1, otherwise
 *                 it returns 0.  It will fail if another routine is already
 *                 bound into the specified source.
 *   Note that the "pri" argument is currently unused.
 */
 
int amiga_add_isr (unsigned long source, isrfunc isr, int pri, void
                   *data, char *name)
{
    unsigned long amiga_source = source & ~IRQ_MACHSPEC;
    isr_node_t *p;
 
    if (amiga_source > NUM_AMIGA_SOURCES) {
        printk ("amiga_add_isr: Unknown interrupt source %ld\n", source);
        return 0;
    }
 
    p = new_isr_node();
    if (p == NULL)
        return 0;
    p->isr = isr;
    p->pri = pri;
    p->data = data;
    p->name = name;
    p->next = NULL;
    insert_isr (&ami_lists[amiga_source], p);
 
    /* enable the interrupt */
    custom.intena = IF_SETCLR | ami_intena_vals[amiga_source];
 
    /* if a CIAA interrupt, enable the appropriate CIA ICR bit */
    if (source >= IRQ_AMIGA_CIAA_TA && source <= IRQ_AMIGA_CIAA_FLG)
        ciaa.icr = 0x80 | (1 << (source - IRQ_AMIGA_CIAA_TA));
 
    /* if a CIAB interrupt, enable the appropriate CIA ICR bit */
    if (source >= IRQ_AMIGA_CIAB_TA && source <= IRQ_AMIGA_CIAB_FLG)
        ciab.icr = 0x80 | (1 << (source - IRQ_AMIGA_CIAB_TA));
 
    return 1;
}
 
int amiga_remove_isr (unsigned long source, isrfunc isr, void *data)
{
    unsigned long amiga_source = source & ~IRQ_MACHSPEC;
 
    if (amiga_source > NUM_AMIGA_SOURCES) {
        printk ("amiga_remove_isr: Unknown interrupt source %ld\n", source);
        return 0;
    }
 
    delete_isr (&ami_lists[amiga_source], isr, data);
 
    if (ami_lists[amiga_source] == NULL) {
        /* disable the interrupt */
        custom.intena = ami_intena_vals[amiga_source];
 
        /* if a CIAA interrupt, disable the appropriate CIA ICR bit */
        if (source >= IRQ_AMIGA_CIAA_TA && source <= IRQ_AMIGA_CIAA_FLG)
            ciaa.icr = 1 << (source - IRQ_AMIGA_CIAA_TA);
 
        /* if a CIAB interrupt, disable the appropriate CIA ICR bit */
        if (source >= IRQ_AMIGA_CIAB_TA && source <= IRQ_AMIGA_CIAB_FLG)
            ciab.icr = 1 << (source - IRQ_AMIGA_CIAB_TA);
    }
 
    return 1;
}
 
 
/*
 * Enable/disable a particular machine specific interrupt source.
 * Note that this may affect other interrupts in case of a shared interrupt.
 */
 
void amiga_enable_irq(unsigned int source)
{
    unsigned long amiga_source = source & ~IRQ_MACHSPEC;
 
    if (amiga_source > NUM_AMIGA_SOURCES) {
        printk("amiga_enable_irq: Unknown interrupt source %d\n", source);
        return;
    }
 
    /* enable the interrupt */
    custom.intena = IF_SETCLR | ami_intena_vals[amiga_source];
 
    /* if a CIAA interrupt, enable the appropriate CIA ICR bit */
    if (source >= IRQ_AMIGA_CIAA_TA && source <= IRQ_AMIGA_CIAA_FLG)
        ciaa.icr = 0x80 | (1 << (source - IRQ_AMIGA_CIAA_TA));
 
    /* if a CIAB interrupt, enable the appropriate CIA ICR bit */
    if (source >= IRQ_AMIGA_CIAB_TA && source <= IRQ_AMIGA_CIAB_FLG)
        ciab.icr = 0x80 | (1 << (source - IRQ_AMIGA_CIAB_TA));
 
}
 
void amiga_disable_irq(unsigned int source)
{
    unsigned long amiga_source = source & ~IRQ_MACHSPEC;
 
    if (amiga_source > NUM_AMIGA_SOURCES) {
        printk("amiga_disable_irq: Unknown interrupt source %d\n", source);
        return;
    }
 
    /* disable the interrupt */
    custom.intena = ami_intena_vals[amiga_source];
 
    /* if a CIAA interrupt, disable the appropriate CIA ICR bit */
    if (source >= IRQ_AMIGA_CIAA_TA && source <= IRQ_AMIGA_CIAA_FLG)
        ciaa.icr = 1 << (source - IRQ_AMIGA_CIAA_TA);
 
    /* if a CIAB interrupt, disable the appropriate CIA ICR bit */
    if (source >= IRQ_AMIGA_CIAB_TA && source <= IRQ_AMIGA_CIAB_FLG)
        ciab.icr = 1 << (source - IRQ_AMIGA_CIAB_TA);
 
}
 
 
int amiga_get_irq_list( char *buf, int len )
{       int                     i;
    isr_node_t  *p;
 
        for( i = 0; i < NUM_AMIGA_SOURCES; ++i ) {
                if (!ami_lists[i])
                        continue;
                len += sprintf( buf+len, "ami  %2d: ???????? ", i );
                for( p = ami_lists[i]; p; p = p->next ) {
                        len += sprintf( buf+len, "%s\n", p->name );
                        if (p->next)
                                len += sprintf( buf+len, "                  " );
                }
        }
 
        return( len );
}

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[/] [or1k_old/] [trunk/] [rc203soc/] [sw/] [uClinux/] [arch/] [m68k/] [amiga/] [amiints.c] - Blame information for rev 1782

Line No.	Rev	Author	Line
1	1623	jcastillo	`/*`
2			`* amiints.c -- Amiga Linux interrupt handling code`
3			`*`
4			`* This file is subject to the terms and conditions of the GNU General Public`
5			`* License. See the file COPYING in the main directory of this archive`
6			`* for more details.`
7			`*`
8			`*/`
9
10			`#include <linux/types.h>`
11			`#include <linux/kernel.h>`
12			`#include <linux/sched.h>`
13
14			`#include <asm/system.h>`
15			`#include <asm/irq.h>`
16			`#include <asm/traps.h>`
17			`#include <asm/amigahw.h>`
18			`#include <asm/amigaints.h>`
19
20			`/* isr node variables for amiga interrupt sources */`
21			`static isr_node_t *ami_lists[NUM_AMIGA_SOURCES];`
22
23			`static const ushort ami_intena_vals[NUM_AMIGA_SOURCES] = {`
24			`IF_VERTB, IF_COPER, IF_AUD0, IF_AUD1, IF_AUD2, IF_AUD3, IF_BLIT,`
25			`IF_DSKSYN, IF_DSKBLK, IF_RBF, IF_TBE, IF_PORTS, IF_PORTS, IF_PORTS,`
26			`IF_PORTS, IF_PORTS, IF_EXTER, IF_EXTER, IF_EXTER, IF_EXTER, IF_EXTER,`
27			`IF_SOFT, IF_PORTS, IF_EXTER`
28			`};`
29
30			`struct ciadata`
31			`{`
32			`volatile struct CIA *ciaptr;`
33			`unsigned long baseirq;`
34			`} ciadata[2];`
35
36			`/*`
37			`* index into ami_lists for IRQs. CIA IRQs are special, because`
38			`* the same cia interrupt handler is used for both CIAs.`
39			`*/`
40			`#define IRQ_IDX(source) (source & ~IRQ_MACHSPEC)`
41			`#define CIA_IRQ_IDX(source) (IRQ_IDX(datap->baseirq) \`
42			`+(source-IRQ_AMIGA_CIAA_TA))`
43
44			`/*`
45			`* void amiga_init_INTS (void)`
46			`*`
47			`* Parameters: None`
48			`*`
49			`* Returns: Nothing`
50			`*`
51			`* This function should be called during kernel startup to initialize`
52			`* the amiga IRQ handling routines.`
53			`*/`
54
55			`static void`
56			`ami_int1(int irq, struct pt_regs fp, void data),`
57			`ami_int2(int irq, struct pt_regs fp, void data),`
58			`ami_int3(int irq, struct pt_regs fp, void data),`
59			`ami_int4(int irq, struct pt_regs fp, void data),`
60			`ami_int5(int irq, struct pt_regs fp, void data),`
61			`ami_int6(int irq, struct pt_regs fp, void data),`
62			`ami_int7(int irq, struct pt_regs fp, void data),`
63			`ami_intcia(int irq, struct pt_regs fp, void data);`
64
65			`void amiga_init_INTS (void)`
66			`{`
67			`int i;`
68
69			`/* initialize handlers */`
70			`for (i = 0; i < NUM_AMIGA_SOURCES; i++)`
71			`ami_lists[i] = NULL;`
72
73			`add_isr (IRQ1, ami_int1, 0, NULL, "int1 handler");`
74			`add_isr (IRQ2, ami_int2, 0, NULL, "int2 handler");`
75			`add_isr (IRQ3, ami_int3, 0, NULL, "int3 handler");`
76			`add_isr (IRQ4, ami_int4, 0, NULL, "int4 handler");`
77			`add_isr (IRQ5, ami_int5, 0, NULL, "int5 handler");`
78			`add_isr (IRQ6, ami_int6, 0, NULL, "int6 handler");`
79			`add_isr (IRQ7, ami_int7, 0, NULL, "int7 handler");`
80
81			`/* hook in the CIA interrupts */`
82			`ciadata[0].ciaptr = &ciaa;`
83			`ciadata[0].baseirq = IRQ_AMIGA_CIAA_TA;`
84			`add_isr (IRQ_AMIGA_PORTS, ami_intcia, 0, NULL, "Amiga CIAA");`
85			`ciadata[1].ciaptr = &ciab;`
86			`ciadata[1].baseirq = IRQ_AMIGA_CIAB_TA;`
87			`add_isr (IRQ_AMIGA_EXTER, ami_intcia, 0, NULL, "Amiga CIAB");`
88
89			`/* turn off all interrupts and enable the master interrupt bit */`
90			`custom.intena = 0x7fff;`
91			`custom.intreq = 0x7fff;`
92			`custom.intena = 0xc000;`
93
94			`/* turn off all CIA interrupts */`
95			`ciaa.icr = 0x7f;`
96			`ciab.icr = 0x7f;`
97
98			`/* clear any pending CIA interrupts */`
99			`i = ciaa.icr;`
100			`i = ciab.icr;`
101			`}`
102
103
104			`/*`
105			`* The builtin Amiga hardware interrupt handlers.`
106			`*/`
107
108			`static void ami_int1 (int irq, struct pt_regs fp, void data)`
109			`{`
110			`ushort ints = custom.intreqr & custom.intenar;`
111
112			`/* if serial transmit buffer empty, interrupt */`
113			`if (ints & IF_TBE) {`
114			`if (ami_lists[IRQ_IDX(IRQ_AMIGA_TBE)]) {`
115			`call_isr_list (IRQ_AMIGA_TBE,`
116			`ami_lists[IRQ_IDX(IRQ_AMIGA_TBE)], fp);`
117			`/*`
118			`* don't acknowledge....`
119			`* allow serial code to turn off interrupts, but`
120			`* leave it pending so that when interrupts are`
121			`* turned on, transmission will resume`
122			`*/`
123			`} else`
124			`/* acknowledge the interrupt */`
125			`custom.intreq = IF_TBE;`
126			`}`
127
128			`/* if floppy disk transfer complete, interrupt */`
129			`if (ints & IF_DSKBLK) {`
130			`call_isr_list (IRQ_AMIGA_DSKBLK,`
131			`ami_lists[IRQ_IDX(IRQ_AMIGA_DSKBLK)], fp);`
132
133			`/* acknowledge */`
134			`custom.intreq = IF_DSKBLK;`
135			`}`
136
137			`/* if software interrupt set, interrupt */`
138			`if (ints & IF_SOFT) {`
139			`call_isr_list (IRQ_AMIGA_SOFT,`
140			`ami_lists[IRQ_IDX(IRQ_AMIGA_SOFT)], fp);`
141
142			`/* acknowledge */`
143			`custom.intreq = IF_SOFT;`
144			`}`
145			`}`
146
147			`static void ami_int2 (int irq, struct pt_regs fp, void data)`
148			`{`
149			`ushort ints = custom.intreqr & custom.intenar;`
150
151			`if (ints & IF_PORTS) {`
152			`/* call routines which have hooked into the PORTS interrupt */`
153			`call_isr_list (IRQ_AMIGA_PORTS,`
154			`ami_lists[IRQ_IDX(IRQ_AMIGA_PORTS)], fp);`
155
156			`/* acknowledge */`
157			`custom.intreq = IF_PORTS;`
158			`}`
159			`}`
160
161			`static void ami_int3 (int irq, struct pt_regs fp, void data)`
162			`{`
163			`ushort ints = custom.intreqr & custom.intenar;`
164
165			`/* if a copper interrupt */`
166			`if (ints & IF_COPER) {`
167			`call_isr_list (IRQ_AMIGA_COPPER,`
168			`ami_lists[IRQ_IDX(IRQ_AMIGA_COPPER)], fp);`
169
170			`/* acknowledge */`
171			`custom.intreq = IF_COPER;`
172			`}`
173
174			`/* if a vertical blank interrupt */`
175			`if (ints & IF_VERTB) {`
176			`call_isr_list (IRQ_AMIGA_VERTB,`
177			`ami_lists[IRQ_IDX(IRQ_AMIGA_VERTB)], fp);`
178
179			`/* acknowledge */`
180			`custom.intreq = IF_VERTB;`
181			`}`
182
183			`/* if a blitter interrupt */`
184			`if (ints & IF_BLIT) {`
185			`call_isr_list (IRQ_AMIGA_BLIT,`
186			`ami_lists[IRQ_IDX(IRQ_AMIGA_BLIT)], fp);`
187
188			`/* acknowledge */`
189			`custom.intreq = IF_BLIT;`
190			`}`
191			`}`
192
193			`static void ami_int4 (int irq, struct pt_regs fp, void data)`
194			`{`
195			`ushort ints = custom.intreqr & custom.intenar;`
196
197			`/* if audio 0 interrupt */`
198			`if (ints & IF_AUD0) {`
199			`call_isr_list (IRQ_AMIGA_AUD0,`
200			`ami_lists[IRQ_IDX(IRQ_AMIGA_AUD0)], fp);`
201
202			`/* acknowledge */`
203			`custom.intreq = IF_AUD0;`
204			`}`
205
206			`/* if audio 1 interrupt */`
207			`if (ints & IF_AUD1) {`
208			`call_isr_list (IRQ_AMIGA_AUD1,`
209			`ami_lists[IRQ_IDX(IRQ_AMIGA_AUD1)], fp);`
210
211			`/* acknowledge */`
212			`custom.intreq = IF_AUD1;`
213			`}`
214
215			`/* if audio 2 interrupt */`
216			`if (ints & IF_AUD2) {`
217			`call_isr_list (IRQ_AMIGA_AUD2,`
218			`ami_lists[IRQ_IDX(IRQ_AMIGA_AUD2)], fp);`
219
220			`/* acknowledge */`
221			`custom.intreq = IF_AUD2;`
222			`}`
223
224			`/* if audio 3 interrupt */`
225			`if (ints & IF_AUD3) {`
226			`call_isr_list (IRQ_AMIGA_AUD3,`
227			`ami_lists[IRQ_IDX(IRQ_AMIGA_AUD3)], fp);`
228
229			`/* acknowledge */`
230			`custom.intreq = IF_AUD3;`
231			`}`
232			`}`
233
234			`static void ami_int5 (int irq, struct pt_regs fp, void data)`
235			`{`
236			`ushort ints = custom.intreqr & custom.intenar;`
237
238			`/* if serial receive buffer full interrupt */`
239			`if (ints & IF_RBF) {`
240			`if (ami_lists[IRQ_IDX(IRQ_AMIGA_RBF)]) {`
241			`call_isr_list (IRQ_AMIGA_RBF,`
242			`ami_lists[IRQ_IDX(IRQ_AMIGA_RBF)], fp);`
243			`/* don't acknowledge ; leave that for the handler */`
244			`} else`
245			`/* acknowledge the interrupt */`
246			`custom.intreq = IF_RBF;`
247			`}`
248
249			`/* if a disk sync interrupt */`
250			`if (ints & IF_DSKSYN) {`
251			`call_isr_list (IRQ_AMIGA_DSKSYN,`
252			`ami_lists[IRQ_IDX(IRQ_AMIGA_DSKSYN)], fp);`
253
254			`/* acknowledge */`
255			`custom.intreq = IF_DSKSYN;`
256			`}`
257			`}`
258
259			`static void ami_int6 (int irq, struct pt_regs fp, void data)`
260			`{`
261			`ushort ints = custom.intreqr & custom.intenar;`
262
263			`if (ints & IF_EXTER) {`
264			`/* call routines which have hooked into the EXTER interrupt */`
265			`call_isr_list (IRQ_AMIGA_EXTER,`
266			`ami_lists[IRQ_IDX(IRQ_AMIGA_EXTER)], fp);`
267
268			`/* acknowledge */`
269			`custom.intreq = IF_EXTER;`
270			`}`
271			`}`
272
273			`static void ami_int7 (int irq, struct pt_regs fp, void data)`
274			`{`
275			`panic ("level 7 interrupt received\n");`
276			`}`
277
278			`static void ami_intcia (int irq, struct pt_regs fp, void data)`
279			`{`
280			`/* check CIA interrupts */`
281			`struct ciadata *datap;`
282			`u_char cia_ints;`
283
284			`/* setup data correctly */`
285			`if (irq == IRQ_AMIGA_PORTS)`
286			`datap = &ciadata[0];`
287			`else`
288			`datap = &ciadata[1];`
289
290			`cia_ints = datap->ciaptr->icr;`
291
292			`/* if timer A interrupt */`
293			`if (cia_ints & CIA_ICR_TA)`
294			`call_isr_list (IRQ_AMIGA_CIAA_TA,`
295			`ami_lists[CIA_IRQ_IDX(IRQ_AMIGA_CIAA_TA)], fp);`
296
297			`/* if timer B interrupt */`
298			`if (cia_ints & CIA_ICR_TB)`
299			`call_isr_list (IRQ_AMIGA_CIAA_TB,`
300			`ami_lists[CIA_IRQ_IDX(IRQ_AMIGA_CIAA_TB)], fp);`
301
302			`/* if the alarm interrupt */`
303			`if (cia_ints & CIA_ICR_ALRM)`
304			`call_isr_list (IRQ_AMIGA_CIAA_ALRM,`
305			`ami_lists[CIA_IRQ_IDX(IRQ_AMIGA_CIAA_ALRM)], fp);`
306
307			`/* if serial port interrupt (keyboard) */`
308			`if (cia_ints & CIA_ICR_SP)`
309			`call_isr_list (IRQ_AMIGA_CIAA_SP,`
310			`ami_lists[CIA_IRQ_IDX(IRQ_AMIGA_CIAA_SP)], fp);`
311
312			`/* if flag interrupt (parallel port) */`
313			`if (cia_ints & CIA_ICR_FLG)`
314			`call_isr_list (IRQ_AMIGA_CIAA_FLG,`
315			`ami_lists[CIA_IRQ_IDX(IRQ_AMIGA_CIAA_FLG)], fp);`
316			`}`
317
318			`/*`
319			`* amiga_add_isr : add an interrupt service routine for a particular`
320			`* machine specific interrupt source.`
321			`* If the addition was successful, it returns 1, otherwise`
322			`* it returns 0. It will fail if another routine is already`
323			`* bound into the specified source.`
324			`* Note that the "pri" argument is currently unused.`
325			`*/`
326
327			`int amiga_add_isr (unsigned long source, isrfunc isr, int pri, void`
328			`data, char name)`
329			`{`
330			`unsigned long amiga_source = source & ~IRQ_MACHSPEC;`
331			`isr_node_t *p;`
332
333			`if (amiga_source > NUM_AMIGA_SOURCES) {`
334			`printk ("amiga_add_isr: Unknown interrupt source %ld\n", source);`
335			`return 0;`
336			`}`
337
338			`p = new_isr_node();`
339			`if (p == NULL)`
340			`return 0;`
341			`p->isr = isr;`
342			`p->pri = pri;`
343			`p->data = data;`
344			`p->name = name;`
345			`p->next = NULL;`
346			`insert_isr (&ami_lists[amiga_source], p);`
347
348			`/* enable the interrupt */`
349			`custom.intena = IF_SETCLR \| ami_intena_vals[amiga_source];`
350
351			`/* if a CIAA interrupt, enable the appropriate CIA ICR bit */`
352			`if (source >= IRQ_AMIGA_CIAA_TA && source <= IRQ_AMIGA_CIAA_FLG)`
353			`ciaa.icr = 0x80 \| (1 << (source - IRQ_AMIGA_CIAA_TA));`
354
355			`/* if a CIAB interrupt, enable the appropriate CIA ICR bit */`
356			`if (source >= IRQ_AMIGA_CIAB_TA && source <= IRQ_AMIGA_CIAB_FLG)`
357			`ciab.icr = 0x80 \| (1 << (source - IRQ_AMIGA_CIAB_TA));`
358
359			`return 1;`
360			`}`
361
362			`int amiga_remove_isr (unsigned long source, isrfunc isr, void *data)`
363			`{`
364			`unsigned long amiga_source = source & ~IRQ_MACHSPEC;`
365
366			`if (amiga_source > NUM_AMIGA_SOURCES) {`
367			`printk ("amiga_remove_isr: Unknown interrupt source %ld\n", source);`
368			`return 0;`
369			`}`
370
371			`delete_isr (&ami_lists[amiga_source], isr, data);`
372
373			`if (ami_lists[amiga_source] == NULL) {`
374			`/* disable the interrupt */`
375			`custom.intena = ami_intena_vals[amiga_source];`
376
377			`/* if a CIAA interrupt, disable the appropriate CIA ICR bit */`
378			`if (source >= IRQ_AMIGA_CIAA_TA && source <= IRQ_AMIGA_CIAA_FLG)`
379			`ciaa.icr = 1 << (source - IRQ_AMIGA_CIAA_TA);`
380
381			`/* if a CIAB interrupt, disable the appropriate CIA ICR bit */`
382			`if (source >= IRQ_AMIGA_CIAB_TA && source <= IRQ_AMIGA_CIAB_FLG)`
383			`ciab.icr = 1 << (source - IRQ_AMIGA_CIAB_TA);`
384			`}`
385
386			`return 1;`
387			`}`
388
389
390			`/*`
391			`* Enable/disable a particular machine specific interrupt source.`
392			`* Note that this may affect other interrupts in case of a shared interrupt.`
393			`*/`
394
395			`void amiga_enable_irq(unsigned int source)`
396			`{`
397			`unsigned long amiga_source = source & ~IRQ_MACHSPEC;`
398
399			`if (amiga_source > NUM_AMIGA_SOURCES) {`
400			`printk("amiga_enable_irq: Unknown interrupt source %d\n", source);`
401			`return;`
402			`}`
403
404			`/* enable the interrupt */`
405			`custom.intena = IF_SETCLR \| ami_intena_vals[amiga_source];`
406
407			`/* if a CIAA interrupt, enable the appropriate CIA ICR bit */`
408			`if (source >= IRQ_AMIGA_CIAA_TA && source <= IRQ_AMIGA_CIAA_FLG)`
409			`ciaa.icr = 0x80 \| (1 << (source - IRQ_AMIGA_CIAA_TA));`
410
411			`/* if a CIAB interrupt, enable the appropriate CIA ICR bit */`
412			`if (source >= IRQ_AMIGA_CIAB_TA && source <= IRQ_AMIGA_CIAB_FLG)`
413			`ciab.icr = 0x80 \| (1 << (source - IRQ_AMIGA_CIAB_TA));`
414
415			`}`
416
417			`void amiga_disable_irq(unsigned int source)`
418			`{`
419			`unsigned long amiga_source = source & ~IRQ_MACHSPEC;`
420
421			`if (amiga_source > NUM_AMIGA_SOURCES) {`
422			`printk("amiga_disable_irq: Unknown interrupt source %d\n", source);`
423			`return;`
424			`}`
425
426			`/* disable the interrupt */`
427			`custom.intena = ami_intena_vals[amiga_source];`
428
429			`/* if a CIAA interrupt, disable the appropriate CIA ICR bit */`
430			`if (source >= IRQ_AMIGA_CIAA_TA && source <= IRQ_AMIGA_CIAA_FLG)`
431			`ciaa.icr = 1 << (source - IRQ_AMIGA_CIAA_TA);`
432
433			`/* if a CIAB interrupt, disable the appropriate CIA ICR bit */`
434			`if (source >= IRQ_AMIGA_CIAB_TA && source <= IRQ_AMIGA_CIAB_FLG)`
435			`ciab.icr = 1 << (source - IRQ_AMIGA_CIAB_TA);`
436
437			`}`
438
439
440			`int amiga_get_irq_list( char *buf, int len )`
441			`{ int i;`
442			`isr_node_t *p;`
443
444			`for( i = 0; i < NUM_AMIGA_SOURCES; ++i ) {`
445			`if (!ami_lists[i])`
446			`continue;`
447			`len += sprintf( buf+len, "ami %2d: ???????? ", i );`
448			`for( p = ami_lists[i]; p; p = p->next ) {`
449			`len += sprintf( buf+len, "%s\n", p->name );`
450			`if (p->next)`
451			`len += sprintf( buf+len, " " );`
452			`}`
453			`}`
454
455			`return( len );`
456			`}`