46d65e85a1
I'm guessing nobody has tried compiling it with 64bit userspace? Patch makes it compile cleanly and stops a "SEGV instead of working" issue. I also added a few checks for errors on system calls. Signed-off-by: Jeremy Jackson <jerj@coplanar.net> Reworked and Acked-by: Stefan Reinauer <stepan@coresystems.de> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2602 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
51 lines
1.5 KiB
C
51 lines
1.5 KiB
C
#ifndef ARCH_PIRQ_ROUTING_H
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#define ARCH_PIRQ_ROUTING_H
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#include <stdint.h>
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#define PIRQ_SIGNATURE (('$' << 0) + ('P' << 8) + ('I' << 16) + ('R' << 24))
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#define PIRQ_VERSION 0x0100
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struct irq_info {
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uint8_t bus, devfn; /* Bus, device and function */
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struct {
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uint8_t link; /* IRQ line ID, chipset dependent, 0=not routed */
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uint16_t bitmap; /* Available IRQs */
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} __attribute__((packed)) irq[4];
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uint8_t slot; /* Slot number, 0=onboard */
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uint8_t rfu;
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} __attribute__((packed));
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#if defined(IRQ_SLOT_COUNT)
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#define IRQ_SLOTS_COUNT IRQ_SLOT_COUNT
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#elif (__GNUC__ < 3)
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#define IRQ_SLOTS_COUNT 1
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#else
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#define IRQ_SLOTS_COUNT
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#endif
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struct irq_routing_table {
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uint32_t signature; /* PIRQ_SIGNATURE should be here */
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uint16_t version; /* PIRQ_VERSION */
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uint16_t size; /* Table size in bytes */
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uint8_t rtr_bus, rtr_devfn; /* Where the interrupt router lies */
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uint16_t exclusive_irqs; /* IRQs devoted exclusively to PCI usage */
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uint16_t rtr_vendor, rtr_device; /* Vendor and device ID of interrupt router */
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uint32_t miniport_data; /* Crap */
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uint8_t rfu[11];
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uint8_t checksum; /* Modulo 256 checksum must give zero */
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struct irq_info slots[IRQ_SLOTS_COUNT];
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} __attribute__((packed));
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extern const struct irq_routing_table intel_irq_routing_table;
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#if HAVE_PIRQ_TABLE==1
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unsigned long copy_pirq_routing_table(unsigned long start);
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unsigned long write_pirq_routing_table(unsigned long start);
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#else
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#define copy_pirq_routing_table(start) (start)
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#define write_pirq_routing_table(start) (start)
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#endif
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#endif /* ARCH_PIRQ_ROUTING_H */
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