/* * 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); } 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, .startup = m68k_irq_startup, .shutdown = m68k_irq_shutdown, .enable = sun3_enable_irq, .disable = sun3_disable_irq, }; void 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, 192, NULL); request_irq(IRQ_AUTO_5, sun3_int5, 0, "int5", NULL); request_irq(IRQ_AUTO_7, sun3_int7, 0, "int7", NULL); request_irq(IRQ_USER+127, sun3_vec255, 0, "vec255", NULL); }