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Rev | Author | Line No. | Line |
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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, void *a) |
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73 | { |
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74 | handler_set(irq, NULL, NIL); |
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75 | handlers[irq].func = 0; |
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76 | } |