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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 2 | pj | 1 | #include<asm/bitops.h> |
| 2 | #include<kernel/kern.h> |
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| 3 | |||
| 4 | struct device *irq2dev_map[16] = {0, 0, /* ... zeroed */}; |
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| 5 | |||
| 6 | static DWORD handled; /* The irq lines we have a handler on. */ |
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| 7 | static volatile int irq_number = 0; /* The latest irq number we actually found. */ |
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| 8 | |||
| 9 | static void autoirq_probe(int irq) |
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| 10 | { |
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| 11 | irq_number = irq; |
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| 12 | cprintf("Autoirq: %d\n", irq); |
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| 13 | |||
| 14 | return; |
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| 15 | } |
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| 16 | |||
| 17 | int autoirq_setup(int waittime) |
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| 18 | { |
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| 19 | int i; |
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| 20 | |||
| 21 | handled = 0; |
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| 22 | |||
| 23 | for (i = 0; i < 16; i++) { |
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| 24 | if (handler_set(i, autoirq_probe, NIL) == 1) { |
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| 25 | set_bit(i, (void *)&handled); |
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| 26 | } |
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| 27 | } |
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| 28 | |||
| 29 | /* Hang out at least <waittime> jiffies waiting for bogus IRQ hits. */ |
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| 30 | task_delay(waittime); |
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| 31 | |||
| 32 | return handled; |
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| 33 | } |
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| 34 | |||
| 35 | int autoirq_report(int waittime) |
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| 36 | { |
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| 37 | int i; |
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| 38 | |||
| 39 | /* Hang out at least <waittime> jiffies waiting for the IRQ. */ |
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| 40 | task_delay(waittime); |
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| 41 | |||
| 42 | /* Retract the irq handlers that we installed. */ |
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| 43 | for (i = 0; i < 16; i++) { |
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| 44 | if (test_bit(i, (void *)&handled)) |
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| 45 | handler_remove(i); |
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| 46 | } |
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| 47 | return irq_number; |
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| 48 | } |
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| 49 | |||
| 50 | /* |
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| 51 | * Local variables: |
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| 52 | * compile-command: "gcc -DKERNEL -Wall -O6 -fomit-frame-pointer -I/usr/src/linux/net/tcp -c auto_irq.c" |
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| 53 | * version-control: t |
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| 54 | * kept-new-versions: 5 |
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| 55 | * c-indent-level: 4 |
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| 56 | * tab-width: 4 |
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| 57 | * End: |
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| 58 | */ |