Commit | Line | Data |
---|---|---|
1da177e4 LT |
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 | } |