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[PATCH] m68k: convert apollo irq code
Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Roman Zippel
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Linus Torvalds
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Jun 25, 2006
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,125 +1,44 @@ | ||
| #include <linux/types.h> | ||
| #include <linux/kernel.h> | ||
| #include <linux/jiffies.h> | ||
| #include <linux/kernel_stat.h> | ||
| #include <linux/timer.h> | ||
| #include <linux/interrupt.h> | ||
|
|
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| #include <asm/system.h> | ||
| #include <asm/irq.h> | ||
| #include <asm/traps.h> | ||
| #include <asm/page.h> | ||
| #include <asm/machdep.h> | ||
| #include <asm/apollohw.h> | ||
| #include <asm/errno.h> | ||
|
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| static irq_handler_t dn_irqs[16]; | ||
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| irqreturn_t dn_process_int(int irq, struct pt_regs *fp) | ||
| void dn_process_int(unsigned int irq, struct pt_regs *fp) | ||
| { | ||
| irqreturn_t res = IRQ_NONE; | ||
|
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| if(dn_irqs[irq-160].handler) { | ||
| res = dn_irqs[irq-160].handler(irq,dn_irqs[irq-160].dev_id,fp); | ||
| } else { | ||
| printk("spurious irq %d occurred\n",irq); | ||
| } | ||
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| *(volatile unsigned char *)(pica)=0x20; | ||
| *(volatile unsigned char *)(picb)=0x20; | ||
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| return res; | ||
| } | ||
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| void dn_init_IRQ(void) { | ||
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| int i; | ||
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| for(i=0;i<16;i++) { | ||
| dn_irqs[i].handler=NULL; | ||
| dn_irqs[i].flags=IRQ_FLG_STD; | ||
| dn_irqs[i].dev_id=NULL; | ||
| dn_irqs[i].devname=NULL; | ||
| } | ||
|
|
||
| } | ||
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| int dn_request_irq(unsigned int irq, irqreturn_t (*handler)(int, void *, struct pt_regs *), unsigned long flags, const char *devname, void *dev_id) { | ||
|
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| if((irq<0) || (irq>15)) { | ||
| printk("Trying to request invalid IRQ\n"); | ||
| return -ENXIO; | ||
| } | ||
|
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| if(!dn_irqs[irq].handler) { | ||
| dn_irqs[irq].handler=handler; | ||
| dn_irqs[irq].flags=IRQ_FLG_STD; | ||
| dn_irqs[irq].dev_id=dev_id; | ||
| dn_irqs[irq].devname=devname; | ||
| if(irq<8) | ||
| *(volatile unsigned char *)(pica+1)&=~(1<<irq); | ||
| else | ||
| *(volatile unsigned char *)(picb+1)&=~(1<<(irq-8)); | ||
|
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| return 0; | ||
| } | ||
| else { | ||
| printk("Trying to request already assigned irq %d\n",irq); | ||
| return -ENXIO; | ||
| } | ||
|
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| } | ||
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| void dn_free_irq(unsigned int irq, void *dev_id) { | ||
|
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| if((irq<0) || (irq>15)) { | ||
| printk("Trying to free invalid IRQ\n"); | ||
| return ; | ||
| } | ||
|
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| if(irq<8) | ||
| *(volatile unsigned char *)(pica+1)|=(1<<irq); | ||
| else | ||
| *(volatile unsigned char *)(picb+1)|=(1<<(irq-8)); | ||
|
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| dn_irqs[irq].handler=NULL; | ||
| dn_irqs[irq].flags=IRQ_FLG_STD; | ||
| dn_irqs[irq].dev_id=NULL; | ||
| dn_irqs[irq].devname=NULL; | ||
|
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| return ; | ||
|
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| } | ||
|
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| void dn_enable_irq(unsigned int irq) { | ||
|
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| printk("dn enable irq\n"); | ||
|
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| } | ||
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| void dn_disable_irq(unsigned int irq) { | ||
|
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| printk("dn disable irq\n"); | ||
| m68k_handle_int(irq, fp); | ||
|
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| *(volatile unsigned char *)(pica)=0x20; | ||
| *(volatile unsigned char *)(picb)=0x20; | ||
| } | ||
|
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| int show_dn_interrupts(struct seq_file *p, void *v) { | ||
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| printk("dn get irq list\n"); | ||
|
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| return 0; | ||
|
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| int apollo_irq_startup(unsigned int irq) | ||
| { | ||
| if (irq < 8) | ||
| *(volatile unsigned char *)(pica+1) &= ~(1 << irq); | ||
| else | ||
| *(volatile unsigned char *)(picb+1) &= ~(1 << (irq - 8)); | ||
| return 0; | ||
| } | ||
|
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| struct fb_info *dn_dummy_fb_init(long *mem_start) { | ||
|
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| printk("fb init\n"); | ||
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| return NULL; | ||
|
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| void apollo_irq_shutdown(unsigned int irq) | ||
| { | ||
| if (irq < 8) | ||
| *(volatile unsigned char *)(pica+1) |= (1 << irq); | ||
| else | ||
| *(volatile unsigned char *)(picb+1) |= (1 << (irq - 8)); | ||
| } | ||
|
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| void dn_dummy_video_setup(char *options,int *ints) { | ||
| static struct irq_controller apollo_irq_controller = { | ||
| .name = "apollo", | ||
| .lock = SPIN_LOCK_UNLOCKED, | ||
| .startup = apollo_irq_startup, | ||
| .shutdown = apollo_irq_shutdown, | ||
| }; | ||
|
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| printk("no video yet\n"); | ||
|
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| void dn_init_IRQ(void) | ||
| { | ||
| m68k_setup_user_interrupt(VEC_USER + 96, 16, dn_process_int); | ||
| m68k_setup_irq_controller(&apollo_irq_controller, IRQ_APOLLO, 16); | ||
| } |
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