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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 2 | pj | 1 | #include <kernel/kern.h> |
| 2 | #include <linux/compatib.h> |
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| 3 | |||
| 4 | static struct { |
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| 5 | void (*func)(int, void *dev_id, struct pt_regs *); |
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| 6 | void *data; |
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| 7 | int flags; |
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| 8 | } handlers[16]; |
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| 9 | |||
| 10 | unsigned long intr_count = 0; |
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| 11 | |||
| 12 | /* |
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| 13 | * Generic Linux interrupt handler. |
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| 14 | */ |
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| 15 | static void linux_intr(int irq) |
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| 16 | { |
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| 17 | struct pt_regs regs; |
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| 18 | SYS_FLAGS f; |
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| 19 | |||
| 20 | |||
| 21 | /* kstat.interrupts[irq]++;*/ |
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| 22 | intr_count++; |
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| 23 | |||
| 24 | #ifdef NOTWORK |
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| 25 | if ((handlers[irq].flags & SA_INTERRUPT) != 0) { |
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| 26 | f = kern_fsave(); |
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| 27 | } |
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| 28 | #endif |
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| 29 | |||
| 30 | (*handlers[irq].func)(irq, handlers[irq].data, ®s); |
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| 31 | |||
| 32 | #ifdef NOTWORK |
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| 33 | if ((handlers[irq].flags & SA_INTERRUPT) != 0) { |
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| 34 | kern_frestore(f); |
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| 35 | } |
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| 36 | #endif |
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| 37 | /* cprintf("LinuxInt done\n"); */ |
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| 38 | intr_count--; |
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| 39 | |||
| 40 | } |
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| 41 | |||
| 42 | /* |
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| 43 | * Attach a handler to an IRQ. |
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| 44 | */ |
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| 45 | int request_irq(unsigned int irq, void (*handler)(int, void *dev_id, struct pt_regs *), unsigned long flags, const char *device, void *dev_id) |
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| 46 | { |
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| 47 | |||
| 48 | if (handlers[irq].func) { |
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| 49 | return (-EBUSY); |
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| 50 | } |
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| 51 | |||
| 52 | handlers[irq].func = handler; |
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| 53 | handlers[irq].flags = flags; |
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| 54 | handlers[irq].data = dev_id; |
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| 55 | |||
| 56 | handler_set(irq, linux_intr, NIL); |
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| 57 | /*if (fdev_intr_alloc(irq, linux_intr, (void *)irq, 0)) { |
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| 58 | handlers[irq].func = 0; |
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| 59 | return (-EBUSY); |
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| 60 | } |
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| 61 | if (!handler) { |
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| 62 | handlers[irq].func = 0; |
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| 63 | fdev_intr_free(irq); |
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| 64 | return (-LINUX_EINVAL); |
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| 65 | }*/ |
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| 66 | return 0; |
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| 67 | } |
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| 68 | |||
| 69 | /* |
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| 70 | * Deallocate an irq. |
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| 71 | */ |
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| 72 | void free_irq(unsigned int irq) |
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| 73 | { |
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| 74 | handler_remove(irq); |
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| 75 | handlers[irq].func = 0; |
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| 76 | } |