Revision ee951a37 hw/isa-bus.c
| b/hw/isa-bus.c | ||
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| 25 | 25 |
struct ISABus {
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BusState qbus; |
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qemu_irq *irqs; |
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uint32_t assigned; |
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}; |
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static ISABus *isabus; |
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target_phys_addr_t isa_mem_base = 0; |
| ... | ... | |
| 61 | 60 |
} |
| 62 | 61 |
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/* |
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* isa_reserve_irq() reserves the ISA irq and returns the corresponding |
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* qemu_irq entry for the i8259. |
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* isa_get_irq() returns the corresponding qemu_irq entry for the i8259. |
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* |
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* This function is only for special cases such as the 'ferr', and |
| 68 | 66 |
* temporary use for normal devices until they are converted to qdev. |
| 69 | 67 |
*/ |
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qemu_irq isa_reserve_irq(int isairq)
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qemu_irq isa_get_irq(int isairq)
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{
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if (isairq < 0 || isairq > 15) {
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hw_error("isa irq %d invalid", isairq);
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} |
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if (isabus->assigned & (1 << isairq)) {
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hw_error("isa irq %d already assigned", isairq);
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} |
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isabus->assigned |= (1 << isairq); |
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return isabus->irqs[isairq]; |
| 80 | 74 |
} |
| 81 | 75 |
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void isa_init_irq(ISADevice *dev, qemu_irq *p, int isairq) |
| 83 | 77 |
{
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assert(dev->nirqs < ARRAY_SIZE(dev->isairq)); |
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if (isabus->assigned & (1 << isairq)) {
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hw_error("isa irq %d already assigned", isairq);
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} |
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isabus->assigned |= (1 << isairq); |
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dev->isairq[dev->nirqs] = isairq; |
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*p = isabus->irqs[isairq];
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*p = isa_get_irq(isairq);
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dev->nirqs++; |
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} |
| 93 | 83 |
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