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pci: prepare irq code for interrupt state

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This rearranges code in preparation for interrupt state
implementation.
Changes:
	- split up bus walk away from interrupt handling
          into a subroutine
	- change irq_state from an array to bitmask
	- verify that irq_state values are 0 or 1 on load

There are no functional changes.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Isaku Yamahata <yamahata@valinux.co.jp>
This commit is contained in:
Michael S. Tsirkin 2009-11-25 15:20:51 +02:00
parent 5b5cb08683
commit d036bb215e
2 changed files with 74 additions and 17 deletions
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2
hw/pci.h
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@ -220,7 +220,7 @@ struct PCIDevice {
qemu_irq *irq;
/* Current IRQ levels. Used internally by the generic PCI code. */
int irq_state[PCI_NUM_PINS];
uint8_t irq_state;
/* Capability bits */
uint32_t cap_present;