| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame^] | 1 | #include <linux/types.h> |
| 2 | #include <linux/kernel.h> |
| 3 | #include <linux/jiffies.h> |
| 4 | #include <linux/kernel_stat.h> |
| 5 | #include <linux/timer.h> |
| 6 | |
| 7 | #include <asm/system.h> |
| 8 | #include <asm/irq.h> |
| 9 | #include <asm/traps.h> |
| 10 | #include <asm/page.h> |
| 11 | #include <asm/machdep.h> |
| 12 | #include <asm/apollohw.h> |
| 13 | #include <asm/errno.h> |
| 14 | |
| 15 | static irq_handler_t dn_irqs[16]; |
| 16 | |
| 17 | irqreturn_t dn_process_int(int irq, struct pt_regs *fp) |
| 18 | { |
| 19 | irqreturn_t res = IRQ_NONE; |
| 20 | |
| 21 | if(dn_irqs[irq-160].handler) { |
| 22 | res = dn_irqs[irq-160].handler(irq,dn_irqs[irq-160].dev_id,fp); |
| 23 | } else { |
| 24 | printk("spurious irq %d occurred\n",irq); |
| 25 | } |
| 26 | |
| 27 | *(volatile unsigned char *)(pica)=0x20; |
| 28 | *(volatile unsigned char *)(picb)=0x20; |
| 29 | |
| 30 | return res; |
| 31 | } |
| 32 | |
| 33 | void dn_init_IRQ(void) { |
| 34 | |
| 35 | int i; |
| 36 | |
| 37 | for(i=0;i<16;i++) { |
| 38 | dn_irqs[i].handler=NULL; |
| 39 | dn_irqs[i].flags=IRQ_FLG_STD; |
| 40 | dn_irqs[i].dev_id=NULL; |
| 41 | dn_irqs[i].devname=NULL; |
| 42 | } |
| 43 | |
| 44 | } |
| 45 | |
| 46 | int dn_request_irq(unsigned int irq, irqreturn_t (*handler)(int, void *, struct pt_regs *), unsigned long flags, const char *devname, void *dev_id) { |
| 47 | |
| 48 | if((irq<0) || (irq>15)) { |
| 49 | printk("Trying to request invalid IRQ\n"); |
| 50 | return -ENXIO; |
| 51 | } |
| 52 | |
| 53 | if(!dn_irqs[irq].handler) { |
| 54 | dn_irqs[irq].handler=handler; |
| 55 | dn_irqs[irq].flags=IRQ_FLG_STD; |
| 56 | dn_irqs[irq].dev_id=dev_id; |
| 57 | dn_irqs[irq].devname=devname; |
| 58 | if(irq<8) |
| 59 | *(volatile unsigned char *)(pica+1)&=~(1<<irq); |
| 60 | else |
| 61 | *(volatile unsigned char *)(picb+1)&=~(1<<(irq-8)); |
| 62 | |
| 63 | return 0; |
| 64 | } |
| 65 | else { |
| 66 | printk("Trying to request already assigned irq %d\n",irq); |
| 67 | return -ENXIO; |
| 68 | } |
| 69 | |
| 70 | } |
| 71 | |
| 72 | void dn_free_irq(unsigned int irq, void *dev_id) { |
| 73 | |
| 74 | if((irq<0) || (irq>15)) { |
| 75 | printk("Trying to free invalid IRQ\n"); |
| 76 | return ; |
| 77 | } |
| 78 | |
| 79 | if(irq<8) |
| 80 | *(volatile unsigned char *)(pica+1)|=(1<<irq); |
| 81 | else |
| 82 | *(volatile unsigned char *)(picb+1)|=(1<<(irq-8)); |
| 83 | |
| 84 | dn_irqs[irq].handler=NULL; |
| 85 | dn_irqs[irq].flags=IRQ_FLG_STD; |
| 86 | dn_irqs[irq].dev_id=NULL; |
| 87 | dn_irqs[irq].devname=NULL; |
| 88 | |
| 89 | return ; |
| 90 | |
| 91 | } |
| 92 | |
| 93 | void dn_enable_irq(unsigned int irq) { |
| 94 | |
| 95 | printk("dn enable irq\n"); |
| 96 | |
| 97 | } |
| 98 | |
| 99 | void dn_disable_irq(unsigned int irq) { |
| 100 | |
| 101 | printk("dn disable irq\n"); |
| 102 | |
| 103 | } |
| 104 | |
| 105 | int show_dn_interrupts(struct seq_file *p, void *v) { |
| 106 | |
| 107 | printk("dn get irq list\n"); |
| 108 | |
| 109 | return 0; |
| 110 | |
| 111 | } |
| 112 | |
| 113 | struct fb_info *dn_dummy_fb_init(long *mem_start) { |
| 114 | |
| 115 | printk("fb init\n"); |
| 116 | |
| 117 | return NULL; |
| 118 | |
| 119 | } |
| 120 | |
| 121 | void dn_dummy_video_setup(char *options,int *ints) { |
| 122 | |
| 123 | printk("no video yet\n"); |
| 124 | |
| 125 | } |