1 #include <linux/types.h>
2 #include <linux/kernel.h>
3 #include <linux/sched.h>
4 #include <linux/kernel_stat.h>
6 #include <asm/system.h>
10 #include <asm/machdep.h>
11 #include <asm/apollohw.h>
13 static irq_handler_t dn_irqs[16];
15 void dn_process_int(int irq, struct pt_regs *fp) {
18 if(dn_irqs[irq-160].handler) {
19 dn_irqs[irq-160].handler(irq,dn_irqs[irq-160].dev_id,fp);
22 printk("spurious irq %d occurred\n",irq);
25 *(volatile unsigned char *)(pica)=0x20;
26 *(volatile unsigned char *)(picb)=0x20;
30 void dn_init_IRQ(void) {
35 dn_irqs[i].handler=NULL;
36 dn_irqs[i].flags=IRQ_FLG_STD;
37 dn_irqs[i].dev_id=NULL;
38 dn_irqs[i].devname=NULL;
43 int dn_request_irq(unsigned int irq, void (*handler)(int, void *, struct pt_regs *), unsigned long flags, const char *devname, void *dev_id) {
45 if((irq<0) || (irq>15)) {
46 printk("Trying to request invalid IRQ\n");
50 if(!dn_irqs[irq].handler) {
51 dn_irqs[irq].handler=handler;
52 dn_irqs[irq].flags=IRQ_FLG_STD;
53 dn_irqs[irq].dev_id=dev_id;
54 dn_irqs[irq].devname=devname;
56 *(volatile unsigned char *)(pica+1)&=~(1<<irq);
58 *(volatile unsigned char *)(picb+1)&=~(1<<(irq-8));
63 printk("Trying to request already assigned irq %d\n",irq);
69 void dn_free_irq(unsigned int irq, void *dev_id) {
71 if((irq<0) || (irq>15)) {
72 printk("Trying to free invalid IRQ\n");
77 *(volatile unsigned char *)(pica+1)|=(1<<irq);
79 *(volatile unsigned char *)(picb+1)|=(1<<(irq-8));
81 dn_irqs[irq].handler=NULL;
82 dn_irqs[irq].flags=IRQ_FLG_STD;
83 dn_irqs[irq].dev_id=NULL;
84 dn_irqs[irq].devname=NULL;
90 void dn_enable_irq(unsigned int irq) {
92 printk("dn enable irq\n");
96 void dn_disable_irq(unsigned int irq) {
98 printk("dn disable irq\n");
102 int dn_get_irq_list(char *buf) {
104 printk("dn get irq list\n");
110 struct fb_info *dn_dummy_fb_init(long *mem_start) {
119 extern void write_keyb_cmd(u_short length, u_char *cmd);
120 static char BellOnCommand[] = { 0xFF, 0x21, 0x81 },
121 BellOffCommand[] = { 0xFF, 0x21, 0x82 };
123 static void dn_nosound (unsigned long ignored) {
125 write_keyb_cmd(sizeof(BellOffCommand),BellOffCommand);
129 void dn_mksound( unsigned int count, unsigned int ticks ) {
131 static struct timer_list sound_timer = { function: dn_nosound };
133 del_timer( &sound_timer );
135 write_keyb_cmd(sizeof(BellOnCommand),BellOnCommand);
137 sound_timer.expires = jiffies + ticks;
138 add_timer( &sound_timer );
142 write_keyb_cmd(sizeof(BellOffCommand),BellOffCommand);
144 #endif /* CONFIG_VT */
147 void dn_dummy_video_setup(char *options,int *ints) {
149 printk("no video yet\n");