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Commit 74be8d08 authored by Roman Zippel's avatar Roman Zippel Committed by Linus Torvalds
Browse files

[PATCH] m68k: convert amiga irq code 



Signed-off-by: default avatarRoman Zippel <zippel@linux-m68k.org>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 68387c44

arch/m68k/amiga/amiga_ksyms.c

+0 −2
Original line number Diff line number Diff line
@@ -23,8 +23,6 @@ EXPORT_SYMBOL(amiga_chip_avail); 
EXPORT_SYMBOL(amiga_chip_size);

EXPORT_SYMBOL(amiga_audio_period);

EXPORT_SYMBOL(amiga_audio_min_period);

EXPORT_SYMBOL(amiga_do_irq);

EXPORT_SYMBOL(amiga_do_irq_list);



#ifdef CONFIG_AMIGA_PCMCIA

  EXPORT_SYMBOL(pcmcia_reset);

arch/m68k/amiga/amiints.c

+36 −346
Original line number Diff line number Diff line
@@ -35,61 +35,29 @@ 
 *           /Jes

 */



#include <linux/types.h>

#include <linux/kernel.h>

#include <linux/sched.h>

#include <linux/kernel_stat.h>

#include <linux/init.h>

#include <linux/interrupt.h>

#include <linux/errno.h>

#include <linux/seq_file.h>



#include <asm/system.h>

#include <asm/irq.h>

#include <asm/traps.h>

#include <asm/amigahw.h>

#include <asm/amigaints.h>

#include <asm/amipcmcia.h>



extern int cia_request_irq(struct ciabase *base,int irq,

                           irqreturn_t (*handler)(int, void *, struct pt_regs *),

                           unsigned long flags, const char *devname, void *dev_id);

extern void cia_free_irq(struct ciabase *base, unsigned int irq, void *dev_id);

extern void cia_init_IRQ(struct ciabase *base);

extern int cia_get_irq_list(struct ciabase *base, struct seq_file *p);



/* irq node variables for amiga interrupt sources */

static irq_node_t *ami_irq_list[AMI_STD_IRQS];



static unsigned short amiga_intena_vals[AMI_STD_IRQS] = {

	[IRQ_AMIGA_VERTB-IRQ_USER]	= IF_VERTB,

	[IRQ_AMIGA_COPPER-IRQ_USER]	= IF_COPER,

	[IRQ_AMIGA_AUD0-IRQ_USER]	= IF_AUD0,

	[IRQ_AMIGA_AUD1-IRQ_USER]	= IF_AUD1,

	[IRQ_AMIGA_AUD2-IRQ_USER]	= IF_AUD2,

	[IRQ_AMIGA_AUD3-IRQ_USER]	= IF_AUD3,

	[IRQ_AMIGA_BLIT-IRQ_USER]	= IF_BLIT,

	[IRQ_AMIGA_DSKSYN-IRQ_USER]	= IF_DSKSYN,

	[IRQ_AMIGA_DSKBLK-IRQ_USER]	= IF_DSKBLK,

	[IRQ_AMIGA_RBF-IRQ_USER]	= IF_RBF,

	[IRQ_AMIGA_TBE-IRQ_USER]	= IF_TBE,

	[IRQ_AMIGA_SOFT-IRQ_USER]	= IF_SOFT,

	[IRQ_AMIGA_PORTS-IRQ_USER]	= IF_PORTS,

	[IRQ_AMIGA_EXTER-IRQ_USER]	= IF_EXTER

static void amiga_enable_irq(unsigned int irq);

static void amiga_disable_irq(unsigned int irq);

static irqreturn_t ami_int1(int irq, void *dev_id, struct pt_regs *fp);

static irqreturn_t ami_int3(int irq, void *dev_id, struct pt_regs *fp);

static irqreturn_t ami_int4(int irq, void *dev_id, struct pt_regs *fp);

static irqreturn_t ami_int5(int irq, void *dev_id, struct pt_regs *fp);



static struct irq_controller amiga_irq_controller = {

	.name		= "amiga",

	.lock		= SPIN_LOCK_UNLOCKED,

	.enable		= amiga_enable_irq,

	.disable	= amiga_disable_irq,

};

static const unsigned char ami_servers[AMI_STD_IRQS] = {

	[IRQ_AMIGA_VERTB-IRQ_USER]	= 1,

	[IRQ_AMIGA_PORTS-IRQ_USER]	= 1,

	[IRQ_AMIGA_EXTER-IRQ_USER]	= 1

};



static short ami_ablecount[AMI_IRQS];



static irqreturn_t ami_badint(int irq, void *dev_id, struct pt_regs *fp)

{

	num_spurious += 1;

	return IRQ_NONE;

}



/*

 * void amiga_init_IRQ(void)
@@ -104,23 +72,12 @@ static irqreturn_t ami_badint(int irq, void *dev_id, struct pt_regs *fp) 


void __init amiga_init_IRQ(void)

{

	int i;

	request_irq(IRQ_AUTO_1, ami_int1, 0, "int1", NULL);

	request_irq(IRQ_AUTO_3, ami_int3, 0, "int3", NULL);

	request_irq(IRQ_AUTO_4, ami_int4, 0, "int4", NULL);

	request_irq(IRQ_AUTO_5, ami_int5, 0, "int5", NULL);



	/* initialize handlers */

	for (i = 0; i < AMI_STD_IRQS; i++) {

		if (ami_servers[i]) {

			ami_irq_list[i] = NULL;

		} else {

			ami_irq_list[i] = new_irq_node();

			ami_irq_list[i]->handler = ami_badint;

			ami_irq_list[i]->flags   = 0;

			ami_irq_list[i]->dev_id  = NULL;

			ami_irq_list[i]->devname = NULL;

			ami_irq_list[i]->next    = NULL;

		}

	}

	for (i = 0; i < AMI_IRQS; i++)

		ami_ablecount[i] = 0;

	m68k_setup_irq_controller(&amiga_irq_controller, IRQ_USER, AMI_STD_IRQS);



	/* turn off PCMCIA interrupts */

	if (AMIGAHW_PRESENT(PCMCIA))
@@ -135,250 +92,21 @@ void __init amiga_init_IRQ(void) 
	cia_init_IRQ(&ciab_base);

}



static inline int amiga_insert_irq(irq_node_t **list, irq_node_t *node)

{

	unsigned long flags;

	irq_node_t *cur;



	if (!node->dev_id)

		printk("%s: Warning: dev_id of %s is zero\n",

		       __FUNCTION__, node->devname);



	local_irq_save(flags);



	cur = *list;



	if (node->flags & SA_INTERRUPT) {

		if (node->flags & SA_SHIRQ)

			return -EBUSY;

		/*

		 * There should never be more than one

		 */

		while (cur && cur->flags & SA_INTERRUPT) {

			list = &cur->next;

			cur = cur->next;

		}

	} else {

		while (cur) {

			list = &cur->next;

			cur = cur->next;

		}

	}



	node->next = cur;

	*list = node;



	local_irq_restore(flags);

	return 0;

}



static inline void amiga_delete_irq(irq_node_t **list, void *dev_id)

{

	unsigned long flags;

	irq_node_t *node;



	local_irq_save(flags);



	for (node = *list; node; list = &node->next, node = *list) {

		if (node->dev_id == dev_id) {

			*list = node->next;

			/* Mark it as free. */

			node->handler = NULL;

			local_irq_restore(flags);

			return;

		}

	}

	local_irq_restore(flags);

	printk ("%s: tried to remove invalid irq\n", __FUNCTION__);

}



/*

 * amiga_request_irq : add an interrupt service routine for a particular

 *                     machine specific interrupt source.

 *                     If the addition was successful, it returns 0.

 */



int amiga_request_irq(unsigned int irq,

		      irqreturn_t (*handler)(int, void *, struct pt_regs *),

                      unsigned long flags, const char *devname, void *dev_id)

{

	irq_node_t *node;

	int error = 0;



	if (irq >= AMI_IRQS) {

		printk ("%s: Unknown IRQ %d from %s\n", __FUNCTION__,

			irq, devname);

		return -ENXIO;

	}



	if (irq < IRQ_USER)

		return cpu_request_irq(irq, handler, flags, devname, dev_id);



	if (irq >= IRQ_AMIGA_CIAB)

		return cia_request_irq(&ciab_base, irq - IRQ_AMIGA_CIAB,

		                       handler, flags, devname, dev_id);



	if (irq >= IRQ_AMIGA_CIAA)

		return cia_request_irq(&ciaa_base, irq - IRQ_AMIGA_CIAA,

		                       handler, flags, devname, dev_id);



	irq -= IRQ_USER;

	/*

	 * IRQ_AMIGA_PORTS & IRQ_AMIGA_EXTER defaults to shared,

	 * we could add a check here for the SA_SHIRQ flag but all drivers

	 * should be aware of sharing anyway.

	 */

	if (ami_servers[irq]) {

		if (!(node = new_irq_node()))

			return -ENOMEM;

		node->handler = handler;

		node->flags   = flags;

		node->dev_id  = dev_id;

		node->devname = devname;

		node->next    = NULL;

		error = amiga_insert_irq(&ami_irq_list[irq], node);

	} else {

		ami_irq_list[irq]->handler = handler;

		ami_irq_list[irq]->flags   = flags;

		ami_irq_list[irq]->dev_id  = dev_id;

		ami_irq_list[irq]->devname = devname;

	}



	/* enable the interrupt */

	if (irq < IRQ_AMIGA_PORTS && !ami_ablecount[irq])

		amiga_custom.intena = IF_SETCLR | amiga_intena_vals[irq];



	return error;

}



void amiga_free_irq(unsigned int irq, void *dev_id)

{

	if (irq >= AMI_IRQS) {

		printk ("%s: Unknown IRQ %d\n", __FUNCTION__, irq);

		return;

	}



	if (irq < IRQ_USER)

		cpu_free_irq(irq, dev_id);



	if (irq >= IRQ_AMIGA_CIAB) {

		cia_free_irq(&ciab_base, irq - IRQ_AMIGA_CIAB, dev_id);

		return;

	}



	if (irq >= IRQ_AMIGA_CIAA) {

		cia_free_irq(&ciaa_base, irq - IRQ_AMIGA_CIAA, dev_id);

		return;

	}



	irq -= IRQ_USER;

	if (ami_servers[irq]) {

		amiga_delete_irq(&ami_irq_list[irq], dev_id);

		/* if server list empty, disable the interrupt */

		if (!ami_irq_list[irq] && irq < IRQ_AMIGA_PORTS)

			amiga_custom.intena = amiga_intena_vals[irq];

	} else {

		if (ami_irq_list[irq]->dev_id != dev_id)

			printk("%s: removing probably wrong IRQ %d from %s\n",

			       __FUNCTION__, irq, ami_irq_list[irq]->devname);

		ami_irq_list[irq]->handler = ami_badint;

		ami_irq_list[irq]->flags   = 0;

		ami_irq_list[irq]->dev_id  = NULL;

		ami_irq_list[irq]->devname = NULL;

		amiga_custom.intena = amiga_intena_vals[irq];

	}

}



/*

 * Enable/disable a particular machine specific interrupt source.

 * Note that this may affect other interrupts in case of a shared interrupt.

 * This function should only be called for a _very_ short time to change some

 * internal data, that may not be changed by the interrupt at the same time.

 * ami_(enable|disable)_irq calls may also be nested.

 */



void amiga_enable_irq(unsigned int irq)

{

	if (irq >= AMI_IRQS) {

		printk("%s: Unknown IRQ %d\n", __FUNCTION__, irq);

		return;

	}



	if (--ami_ablecount[irq])

		return;



	/* No action for auto-vector interrupts */

	if (irq < IRQ_USER) {

		printk("%s: Trying to enable auto-vector IRQ %i\n",

		       __FUNCTION__, irq);

		return;

	}



	if (irq >= IRQ_AMIGA_CIAB) {

		cia_set_irq(&ciab_base, (1 << (irq - IRQ_AMIGA_CIAB)));

		cia_able_irq(&ciab_base, CIA_ICR_SETCLR |

		             (1 << (irq - IRQ_AMIGA_CIAB)));

		return;

	}



	if (irq >= IRQ_AMIGA_CIAA) {

		cia_set_irq(&ciaa_base, (1 << (irq - IRQ_AMIGA_CIAA)));

		cia_able_irq(&ciaa_base, CIA_ICR_SETCLR |

		             (1 << (irq - IRQ_AMIGA_CIAA)));

		return;

	}



	/* enable the interrupt */

	amiga_custom.intena = IF_SETCLR | amiga_intena_vals[irq-IRQ_USER];

}



void amiga_disable_irq(unsigned int irq)

{

	if (irq >= AMI_IRQS) {

		printk("%s: Unknown IRQ %d\n", __FUNCTION__, irq);

		return;

	}



	if (ami_ablecount[irq]++)

		return;



	/* No action for auto-vector interrupts */

	if (irq < IRQ_USER) {

		printk("%s: Trying to disable auto-vector IRQ %i\n",

		       __FUNCTION__, irq);

		return;

	}



	if (irq >= IRQ_AMIGA_CIAB) {

		cia_able_irq(&ciab_base, 1 << (irq - IRQ_AMIGA_CIAB));

		return;

	}



	if (irq >= IRQ_AMIGA_CIAA) {

		cia_able_irq(&ciaa_base, 1 << (irq - IRQ_AMIGA_CIAA));

		return;

	}



	/* disable the interrupt */

	amiga_custom.intena = amiga_intena_vals[irq-IRQ_USER];

}



inline void amiga_do_irq(int irq, struct pt_regs *fp)

static void amiga_enable_irq(unsigned int irq)

{

	kstat_cpu(0).irqs[irq]++;

	ami_irq_list[irq-IRQ_USER]->handler(irq, ami_irq_list[irq-IRQ_USER]->dev_id, fp);

	amiga_custom.intena = IF_SETCLR | (1 << (irq - IRQ_USER));

}



void amiga_do_irq_list(int irq, struct pt_regs *fp)

static void amiga_disable_irq(unsigned int irq)

{

	irq_node_t *node;



	kstat_cpu(0).irqs[irq]++;



	amiga_custom.intreq = amiga_intena_vals[irq-IRQ_USER];



	for (node = ami_irq_list[irq-IRQ_USER]; node; node = node->next)

		node->handler(irq, node->dev_id, fp);

	amiga_custom.intena = 1 << (irq - IRQ_USER);

}



/*
@@ -392,19 +120,19 @@ static irqreturn_t ami_int1(int irq, void *dev_id, struct pt_regs *fp) 
	/* if serial transmit buffer empty, interrupt */

	if (ints & IF_TBE) {

		amiga_custom.intreq = IF_TBE;

		amiga_do_irq(IRQ_AMIGA_TBE, fp);

		m68k_handle_int(IRQ_AMIGA_TBE, fp);

	}



	/* if floppy disk transfer complete, interrupt */

	if (ints & IF_DSKBLK) {

		amiga_custom.intreq = IF_DSKBLK;

		amiga_do_irq(IRQ_AMIGA_DSKBLK, fp);

		m68k_handle_int(IRQ_AMIGA_DSKBLK, fp);

	}



	/* if software interrupt set, interrupt */

	if (ints & IF_SOFT) {

		amiga_custom.intreq = IF_SOFT;

		amiga_do_irq(IRQ_AMIGA_SOFT, fp);

		m68k_handle_int(IRQ_AMIGA_SOFT, fp);

	}

	return IRQ_HANDLED;

}
@@ -416,18 +144,20 @@ static irqreturn_t ami_int3(int irq, void *dev_id, struct pt_regs *fp) 
	/* if a blitter interrupt */

	if (ints & IF_BLIT) {

		amiga_custom.intreq = IF_BLIT;

		amiga_do_irq(IRQ_AMIGA_BLIT, fp);

		m68k_handle_int(IRQ_AMIGA_BLIT, fp);

	}



	/* if a copper interrupt */

	if (ints & IF_COPER) {

		amiga_custom.intreq = IF_COPER;

		amiga_do_irq(IRQ_AMIGA_COPPER, fp);

		m68k_handle_int(IRQ_AMIGA_COPPER, fp);

	}



	/* if a vertical blank interrupt */

	if (ints & IF_VERTB)

		amiga_do_irq_list(IRQ_AMIGA_VERTB, fp);

	if (ints & IF_VERTB) {

		amiga_custom.intreq = IF_VERTB;

		m68k_handle_int(IRQ_AMIGA_VERTB, fp);

	}

	return IRQ_HANDLED;

}
@@ -438,25 +168,25 @@ static irqreturn_t ami_int4(int irq, void *dev_id, struct pt_regs *fp) 
	/* if audio 0 interrupt */

	if (ints & IF_AUD0) {

		amiga_custom.intreq = IF_AUD0;

		amiga_do_irq(IRQ_AMIGA_AUD0, fp);

		m68k_handle_int(IRQ_AMIGA_AUD0, fp);

	}



	/* if audio 1 interrupt */

	if (ints & IF_AUD1) {

		amiga_custom.intreq = IF_AUD1;

		amiga_do_irq(IRQ_AMIGA_AUD1, fp);

		m68k_handle_int(IRQ_AMIGA_AUD1, fp);

	}



	/* if audio 2 interrupt */

	if (ints & IF_AUD2) {

		amiga_custom.intreq = IF_AUD2;

		amiga_do_irq(IRQ_AMIGA_AUD2, fp);

		m68k_handle_int(IRQ_AMIGA_AUD2, fp);

	}



	/* if audio 3 interrupt */

	if (ints & IF_AUD3) {

		amiga_custom.intreq = IF_AUD3;

		amiga_do_irq(IRQ_AMIGA_AUD3, fp);

		m68k_handle_int(IRQ_AMIGA_AUD3, fp);

	}

	return IRQ_HANDLED;

}
@@ -468,53 +198,13 @@ static irqreturn_t ami_int5(int irq, void *dev_id, struct pt_regs *fp) 
	/* if serial receive buffer full interrupt */

	if (ints & IF_RBF) {

		/* acknowledge of IF_RBF must be done by the serial interrupt */

		amiga_do_irq(IRQ_AMIGA_RBF, fp);

		m68k_handle_int(IRQ_AMIGA_RBF, fp);

	}



	/* if a disk sync interrupt */

	if (ints & IF_DSKSYN) {

		amiga_custom.intreq = IF_DSKSYN;

		amiga_do_irq(IRQ_AMIGA_DSKSYN, fp);

		m68k_handle_int(IRQ_AMIGA_DSKSYN, fp);

	}

	return IRQ_HANDLED;

}
 


static irqreturn_t ami_int7(int irq, void *dev_id, struct pt_regs *fp)

{

	panic ("level 7 interrupt received\n");

}



irqreturn_t (*amiga_default_handler[SYS_IRQS])(int, void *, struct pt_regs *) = {

	[1] = ami_int1,

	[3] = ami_int3,

	[4] = ami_int4,

	[5] = ami_int5,

	[7] = ami_int7

};



int show_amiga_interrupts(struct seq_file *p, void *v)

{

	int i;

	irq_node_t *node;



	for (i = IRQ_USER; i < IRQ_AMIGA_CIAA; i++) {

		node = ami_irq_list[i - IRQ_USER];

		if (!node)

			continue;

		seq_printf(p, "ami  %2d: %10u ", i,

		               kstat_cpu(0).irqs[i]);

		do {

			if (node->flags & SA_INTERRUPT)

				seq_puts(p, "F ");

			else

				seq_puts(p, "  ");

			seq_printf(p, "%s\n", node->devname);

			if ((node = node->next))

				seq_puts(p, "                    ");

		} while (node);

	}



	cia_get_irq_list(&ciaa_base, p);

	cia_get_irq_list(&ciab_base, p);

	return 0;

}

arch/m68k/amiga/cia.c

+78 −77
Original line number Diff line number Diff line
@@ -29,21 +29,18 @@ struct ciabase { 
	unsigned short int_mask;

	int handler_irq, cia_irq, server_irq;

	char *name;

	irq_handler_t irq_list[CIA_IRQS];

} ciaa_base = {

	.cia		= &ciaa,

	.int_mask	= IF_PORTS,

	.handler_irq	= IRQ_AUTO_2,

	.handler_irq	= IRQ_AMIGA_PORTS,

	.cia_irq	= IRQ_AMIGA_CIAA,

	.server_irq	= IRQ_AMIGA_PORTS,

	.name		= "CIAA handler"

	.name		= "CIAA"

}, ciab_base = {

	.cia		= &ciab,

	.int_mask	= IF_EXTER,

	.handler_irq	= IRQ_AUTO_6,

	.handler_irq	= IRQ_AMIGA_EXTER,

	.cia_irq	= IRQ_AMIGA_CIAB,

	.server_irq	= IRQ_AMIGA_EXTER,

	.name		= "CIAB handler"

	.name		= "CIAB"

};



/*
@@ -66,13 +63,11 @@ unsigned char cia_set_irq(struct ciabase *base, unsigned char mask) 


/*

 *  Enable or disable CIA interrupts, return old interrupt mask,

 *  interrupts will only be enabled if a handler exists

 */



unsigned char cia_able_irq(struct ciabase *base, unsigned char mask)

{

	unsigned char old, tmp;

	int i;

	unsigned char old;



	old = base->icr_mask;

	base->icr_data |= base->cia->icr;
@@ -82,98 +77,104 @@ unsigned char cia_able_irq(struct ciabase *base, unsigned char mask) 
	else

		base->icr_mask &= ~mask;

	base->icr_mask &= CIA_ICR_ALL;

	for (i = 0, tmp = 1; i < CIA_IRQS; i++, tmp <<= 1) {

		if ((tmp & base->icr_mask) && !base->irq_list[i].handler) {

			base->icr_mask &= ~tmp;

			base->cia->icr = tmp;

		}

	}

	if (base->icr_data & base->icr_mask)

		amiga_custom.intreq = IF_SETCLR | base->int_mask;

	return old;

}



int cia_request_irq(struct ciabase *base, unsigned int irq,

                    irqreturn_t (*handler)(int, void *, struct pt_regs *),

                    unsigned long flags, const char *devname, void *dev_id)

{

	unsigned char mask;



	base->irq_list[irq].handler = handler;

	base->irq_list[irq].flags   = flags;

	base->irq_list[irq].dev_id  = dev_id;

	base->irq_list[irq].devname = devname;



	/* enable the interrupt */

	mask = 1 << irq;

	cia_set_irq(base, mask);

	cia_able_irq(base, CIA_ICR_SETCLR | mask);

	return 0;

}



void cia_free_irq(struct ciabase *base, unsigned int irq, void *dev_id)

{

	if (base->irq_list[irq].dev_id != dev_id)

		printk("%s: removing probably wrong IRQ %i from %s\n",

		       __FUNCTION__, base->cia_irq + irq,

		       base->irq_list[irq].devname);



	base->irq_list[irq].handler = NULL;

	base->irq_list[irq].flags   = 0;



	cia_able_irq(base, 1 << irq);

}



static irqreturn_t cia_handler(int irq, void *dev_id, struct pt_regs *fp)

{

	struct ciabase *base = (struct ciabase *)dev_id;

	int mach_irq, i;

	int mach_irq;

	unsigned char ints;



	mach_irq = base->cia_irq;

	ints = cia_set_irq(base, CIA_ICR_ALL);

	amiga_custom.intreq = base->int_mask;

	for (i = 0; i < CIA_IRQS; i++, mach_irq++) {

		if (ints & 1) {

			kstat_cpu(0).irqs[mach_irq]++;

			base->irq_list[i].handler(mach_irq, base->irq_list[i].dev_id, fp);

	for (; ints; mach_irq++, ints >>= 1) {

		if (ints & 1)

			m68k_handle_int(mach_irq, fp);

	}

		ints >>= 1;

	}

	amiga_do_irq_list(base->server_irq, fp);

	return IRQ_HANDLED;

}



void __init cia_init_IRQ(struct ciabase *base)

static void cia_enable_irq(unsigned int irq)

{

	int i;

	unsigned char mask;



	/* init isr handlers */

	for (i = 0; i < CIA_IRQS; i++) {

		base->irq_list[i].handler = NULL;

		base->irq_list[i].flags   = 0;

	if (irq >= IRQ_AMIGA_CIAB) {

		mask = 1 << (irq - IRQ_AMIGA_CIAB);

		cia_set_irq(&ciab_base, mask);

		cia_able_irq(&ciab_base, CIA_ICR_SETCLR | mask);

	} else {

		mask = 1 << (irq - IRQ_AMIGA_CIAA);

		cia_set_irq(&ciaa_base, mask);

		cia_able_irq(&ciaa_base, CIA_ICR_SETCLR | mask);

	}

}



	/* clear any pending interrupt and turn off all interrupts */

	cia_set_irq(base, CIA_ICR_ALL);

	cia_able_irq(base, CIA_ICR_ALL);

static void cia_disable_irq(unsigned int irq)

{

	if (irq >= IRQ_AMIGA_CIAB)

		cia_able_irq(&ciab_base, 1 << (irq - IRQ_AMIGA_CIAB));

	else

		cia_able_irq(&ciaa_base, 1 << (irq - IRQ_AMIGA_CIAA));

}



static struct irq_controller cia_irq_controller = {

	.name		= "cia",

	.lock		= SPIN_LOCK_UNLOCKED,

	.enable		= cia_enable_irq,

	.disable	= cia_disable_irq,

};



	/* install CIA handler */

	request_irq(base->handler_irq, cia_handler, 0, base->name, base);

/*

 * Override auto irq 2 & 6 and use them as general chain

 * for external interrupts, we link the CIA interrupt sources

 * into this chain.

 */



	amiga_custom.intena = IF_SETCLR | base->int_mask;

static void auto_enable_irq(unsigned int irq)

{

	switch (irq) {

	case IRQ_AUTO_2:

		amiga_custom.intena = IF_SETCLR | IF_PORTS;

		break;

	case IRQ_AUTO_6:

		amiga_custom.intena = IF_SETCLR | IF_EXTER;

		break;

	}

}



int cia_get_irq_list(struct ciabase *base, struct seq_file *p)

static void auto_disable_irq(unsigned int irq)

{

	int i, j;



	j = base->cia_irq;

	for (i = 0; i < CIA_IRQS; i++) {

		seq_printf(p, "cia  %2d: %10d ", j + i,

			       kstat_cpu(0).irqs[j + i]);

		seq_puts(p, "  ");

		seq_printf(p, "%s\n", base->irq_list[i].devname);

	switch (irq) {

	case IRQ_AUTO_2:

		amiga_custom.intena = IF_PORTS;

		break;

	case IRQ_AUTO_6:

		amiga_custom.intena = IF_EXTER;

		break;

	}

}

	return 0;



static struct irq_controller auto_irq_controller = {

	.name		= "auto",

	.lock		= SPIN_LOCK_UNLOCKED,

	.enable		= auto_enable_irq,

	.disable	= auto_disable_irq,

};



void __init cia_init_IRQ(struct ciabase *base)

{

	m68k_setup_irq_controller(&cia_irq_controller, base->cia_irq, CIA_IRQS);



	/* clear any pending interrupt and turn off all interrupts */

	cia_set_irq(base, CIA_ICR_ALL);

	cia_able_irq(base, CIA_ICR_ALL);



	/* override auto int and install CIA handler */

	m68k_setup_irq_controller(&auto_irq_controller, base->handler_irq, 1);

	m68k_irq_startup(base->handler_irq);

	request_irq(base->handler_irq, cia_handler, SA_SHIRQ, base->name, base);

}

arch/m68k/amiga/config.c

+0 −15
Original line number Diff line number Diff line
@@ -87,17 +87,8 @@ extern char m68k_debug_device[]; 
static void amiga_sched_init(irqreturn_t (*handler)(int, void *, struct pt_regs *));

/* amiga specific irq functions */

extern void amiga_init_IRQ (void);

extern irqreturn_t (*amiga_default_handler[]) (int, void *, struct pt_regs *);

extern int amiga_request_irq (unsigned int irq,

			      irqreturn_t (*handler)(int, void *, struct pt_regs *),

                              unsigned long flags, const char *devname,

			      void *dev_id);

extern void amiga_free_irq (unsigned int irq, void *dev_id);

extern void amiga_enable_irq (unsigned int);

extern void amiga_disable_irq (unsigned int);

static void amiga_get_model(char *model);

static int amiga_get_hardware_list(char *buffer);

extern int show_amiga_interrupts (struct seq_file *, void *);

/* amiga specific timer functions */

static unsigned long amiga_gettimeoffset (void);

static int a3000_hwclk (int, struct rtc_time *);
@@ -392,14 +383,8 @@ void __init config_amiga(void) 


  mach_sched_init      = amiga_sched_init;

  mach_init_IRQ        = amiga_init_IRQ;

  mach_default_handler = &amiga_default_handler;

  mach_request_irq     = amiga_request_irq;

  mach_free_irq        = amiga_free_irq;

  enable_irq           = amiga_enable_irq;

  disable_irq          = amiga_disable_irq;

  mach_get_model       = amiga_get_model;

  mach_get_hardware_list = amiga_get_hardware_list;

  mach_get_irq_list    = show_amiga_interrupts;

  mach_gettimeoffset   = amiga_gettimeoffset;

  if (AMIGAHW_PRESENT(A3000_CLK)){

    mach_hwclk         = a3000_hwclk;

include/asm-m68k/amigaints.h

+3 −5
Original line number Diff line number Diff line
@@ -37,8 +37,8 @@ 
#define IRQ_AMIGA_SOFT		(IRQ_USER+2)



/* interrupts from external hardware */

#define IRQ_AMIGA_PORTS		(IRQ_USER+3)

#define IRQ_AMIGA_EXTER		(IRQ_USER+13)

#define IRQ_AMIGA_PORTS		IRQ_AUTO_2

#define IRQ_AMIGA_EXTER		IRQ_AUTO_6



/* copper interrupt */

#define IRQ_AMIGA_COPPER	(IRQ_USER+4)
@@ -88,9 +88,6 @@ 
#define IF_DSKBLK   0x0002	/* diskblock DMA finished */

#define IF_TBE	    0x0001	/* serial transmit buffer empty interrupt */



extern void amiga_do_irq(int irq, struct pt_regs *fp);

extern void amiga_do_irq_list(int irq, struct pt_regs *fp);



/* CIA interrupt control register bits */



#define CIA_ICR_TA	0x01
@@ -107,6 +104,7 @@ extern void amiga_do_irq_list(int irq, struct pt_regs *fp); 


extern struct ciabase ciaa_base, ciab_base;



extern void cia_init_IRQ(struct ciabase *base);

extern unsigned char cia_set_irq(struct ciabase *base, unsigned char mask);

extern unsigned char cia_able_irq(struct ciabase *base, unsigned char mask);