[linux.git] / arch / m68k / sun3 / sun3ints.c

 /*
 * linux/arch/m68k/sun3/sun3ints.c -- Sun-3(x) 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 <linux/kernel_stat.h>
#include <linux/interrupt.h>
#include <asm/segment.h>
#include <asm/intersil.h>
#include <asm/oplib.h>
#include <asm/sun3ints.h>
#include <asm/irq_regs.h>
#include <linux/seq_file.h>

extern void sun3_leds (unsigned char);

void sun3_disable_interrupts(void)
{
	sun3_disable_irq(0);
}

void sun3_enable_interrupts(void)
{
	sun3_enable_irq(0);
}

static int led_pattern[8] = {
       ~(0x80), ~(0x01),
       ~(0x40), ~(0x02),
       ~(0x20), ~(0x04),
       ~(0x10), ~(0x08)
};

volatile unsigned char* sun3_intreg;

void sun3_enable_irq(unsigned int irq)
{
	*sun3_intreg |=  (1 << irq);
}

void sun3_disable_irq(unsigned int irq)
{
	*sun3_intreg &= ~(1 << irq);
}

static irqreturn_t sun3_int7(int irq, void *dev_id)
{
	*sun3_intreg |=  (1 << irq);
	if (!(kstat_cpu(0).irqs[irq] % 2000))
		sun3_leds(led_pattern[(kstat_cpu(0).irqs[irq] % 16000) / 2000]);
	return IRQ_HANDLED;
}

static irqreturn_t sun3_int5(int irq, void *dev_id)
{
#ifdef CONFIG_SUN3
	intersil_clear();
#endif
        *sun3_intreg |=  (1 << irq);
#ifdef CONFIG_SUN3
	intersil_clear();
#endif
        do_timer(1);
#ifndef CONFIG_SMP
	update_process_times(user_mode(get_irq_regs()));
#endif
        if (!(kstat_cpu(0).irqs[irq] % 20))
                sun3_leds(led_pattern[(kstat_cpu(0).irqs[irq] % 160) / 20]);
	return IRQ_HANDLED;
}

static irqreturn_t sun3_vec255(int irq, void *dev_id)
{
//	intersil_clear();
	return IRQ_HANDLED;
}

static void sun3_inthandle(unsigned int irq, struct pt_regs *fp)
{
        *sun3_intreg &= ~(1 << irq);

	__m68k_handle_int(irq, fp);
}

static struct irq_controller sun3_irq_controller = {
	.name		= "sun3",
	.lock		= __SPIN_LOCK_UNLOCKED(sun3_irq_controller.lock),
	.startup	= m68k_irq_startup,
	.shutdown	= m68k_irq_shutdown,
	.enable		= sun3_enable_irq,
	.disable	= sun3_disable_irq,
};

void __init sun3_init_IRQ(void)
{
	*sun3_intreg = 1;

	m68k_setup_auto_interrupt(sun3_inthandle);
	m68k_setup_irq_controller(&sun3_irq_controller, IRQ_AUTO_1, 7);
	m68k_setup_user_interrupt(VEC_USER, 128, NULL);

	if (request_irq(IRQ_AUTO_5, sun3_int5, 0, "int5", NULL))
		pr_err("Couldn't register %s interrupt\n", "int5");
	if (request_irq(IRQ_AUTO_7, sun3_int7, 0, "int7", NULL))
		pr_err("Couldn't register %s interrupt\n", "int7");
	if (request_irq(IRQ_USER+127, sun3_vec255, 0, "vec255", NULL))
		pr_err("Couldn't register %s interrupt\n", "vec255");
}
Commit	Line	Data
1da177e4 LT	1	/*
	2	* linux/arch/m68k/sun3/sun3ints.c -- Sun-3(x) 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
1da177e4 LT	9	#include <linux/types.h>
	10	#include <linux/kernel.h>
	11	#include <linux/sched.h>
	12	#include <linux/kernel_stat.h>
	13	#include <linux/interrupt.h>
	14	#include <asm/segment.h>
	15	#include <asm/intersil.h>
	16	#include <asm/oplib.h>
	17	#include <asm/sun3ints.h>
2850bc27	18	#include <asm/irq_regs.h>
1da177e4 LT	19	#include <linux/seq_file.h>
	20
	21	extern void sun3_leds (unsigned char);
1da177e4 LT	22
	23	void sun3_disable_interrupts(void)
	24	{
	25	sun3_disable_irq(0);
	26	}
	27
	28	void sun3_enable_interrupts(void)
	29	{
	30	sun3_enable_irq(0);
	31	}
	32
07b81259	33	static int led_pattern[8] = {
1da177e4 LT	34	~(0x80), ~(0x01),
	35	~(0x40), ~(0x02),
	36	~(0x20), ~(0x04),
	37	~(0x10), ~(0x08)
	38	};
	39
	40	volatile unsigned char* sun3_intreg;
	41
1da177e4 LT	42	void sun3_enable_irq(unsigned int irq)
1da177e4 LT	43	{
ebba61d5	44	*sun3_intreg \|= (1 << irq);
1da177e4 LT	45	}
	46
	47	void sun3_disable_irq(unsigned int irq)
	48	{
ebba61d5	49	*sun3_intreg &= ~(1 << irq);
1da177e4 LT	50	}
1da177e4 LT	51
2850bc27	52	static irqreturn_t sun3_int7(int irq, void *dev_id)
1da177e4	53	{
ebba61d5 RZ	54	*sun3_intreg \|= (1 << irq);
	55	if (!(kstat_cpu(0).irqs[irq] % 2000))
	56	sun3_leds(led_pattern[(kstat_cpu(0).irqs[irq] % 16000) / 2000]);
1da177e4 LT	57	return IRQ_HANDLED;
	58	}
	59
2850bc27	60	static irqreturn_t sun3_int5(int irq, void *dev_id)
1da177e4	61	{
1da177e4 LT	62	#ifdef CONFIG_SUN3
	63	intersil_clear();
	64	#endif
ebba61d5	65	*sun3_intreg \|= (1 << irq);
1da177e4 LT	66	#ifdef CONFIG_SUN3
	67	intersil_clear();
	68	#endif
3171a030	69	do_timer(1);
1da177e4	70	#ifndef CONFIG_SMP
2850bc27	71	update_process_times(user_mode(get_irq_regs()));
1da177e4	72	#endif
ebba61d5 RZ	73	if (!(kstat_cpu(0).irqs[irq] % 20))
ebba61d5 RZ	74	sun3_leds(led_pattern[(kstat_cpu(0).irqs[irq] % 160) / 20]);
1da177e4 LT	75	return IRQ_HANDLED;
	76	}
	77
2850bc27	78	static irqreturn_t sun3_vec255(int irq, void *dev_id)
1da177e4 LT	79	{
	80	// intersil_clear();
	81	return IRQ_HANDLED;
	82	}
	83
ebba61d5	84	static void sun3_inthandle(unsigned int irq, struct pt_regs *fp)
1da177e4	85	{
ebba61d5	86	*sun3_intreg &= ~(1 << irq);
1da177e4	87
2850bc27	88	__m68k_handle_int(irq, fp);
1da177e4 LT	89	}
1da177e4 LT	90
ebba61d5 RZ	91	static struct irq_controller sun3_irq_controller = {
ebba61d5 RZ	92	.name = "sun3",
241258d1	93	.lock = __SPIN_LOCK_UNLOCKED(sun3_irq_controller.lock),
ebba61d5 RZ	94	.startup = m68k_irq_startup,
	95	.shutdown = m68k_irq_shutdown,
	96	.enable = sun3_enable_irq,
	97	.disable = sun3_disable_irq,
	98	};
1da177e4	99
66a3f820	100	void __init sun3_init_IRQ(void)
1da177e4	101	{
ebba61d5	102	*sun3_intreg = 1;
1da177e4	103
ebba61d5 RZ	104	m68k_setup_auto_interrupt(sun3_inthandle);
ebba61d5 RZ	105	m68k_setup_irq_controller(&sun3_irq_controller, IRQ_AUTO_1, 7);
35bdd52d	106	m68k_setup_user_interrupt(VEC_USER, 128, NULL);
1da177e4	107
07e449b5 GU	108	if (request_irq(IRQ_AUTO_5, sun3_int5, 0, "int5", NULL))
	109	pr_err("Couldn't register %s interrupt\n", "int5");
	110	if (request_irq(IRQ_AUTO_7, sun3_int7, 0, "int7", NULL))
	111	pr_err("Couldn't register %s interrupt\n", "int7");
	112	if (request_irq(IRQ_USER+127, sun3_vec255, 0, "vec255", NULL))
	113	pr_err("Couldn't register %s interrupt\n", "vec255");
1da177e4	114	}