blob: ecc288267d0e87812da6a5cfe8be0823be8526a1 [file] [log] [blame]
#ifndef ARCH_PIRQ_ROUTING_H
#define ARCH_PIRQ_ROUTING_H
#include <stdint.h>
#define PIRQ_SIGNATURE (('$' << 0) + ('P' << 8) + ('I' << 16) + ('R' << 24))
#define PIRQ_VERSION 0x0100
struct irq_info {
uint8_t bus, devfn; /* Bus, device and function */
struct {
uint8_t link; /* IRQ line ID, chipset dependent, 0=not routed */
uint16_t bitmap; /* Available IRQs */
} __attribute__((packed)) irq[4];
uint8_t slot; /* Slot number, 0=onboard */
uint8_t rfu;
} __attribute__((packed));
#if defined(CONFIG_IRQ_SLOT_COUNT)
#define IRQ_SLOTS_COUNT CONFIG_IRQ_SLOT_COUNT
#elif (__GNUC__ < 3)
#define IRQ_SLOTS_COUNT 1
#else
#define IRQ_SLOTS_COUNT
#endif
struct irq_routing_table {
uint32_t signature; /* PIRQ_SIGNATURE should be here */
uint16_t version; /* PIRQ_VERSION */
uint16_t size; /* Table size in bytes */
uint8_t rtr_bus, rtr_devfn; /* Where the interrupt router lies */
uint16_t exclusive_irqs; /* IRQs devoted exclusively to PCI usage */
uint16_t rtr_vendor, rtr_device; /* Vendor and device ID of interrupt router */
uint32_t miniport_data; /* Crap */
uint8_t rfu[11];
uint8_t checksum; /* Modulo 256 checksum must give zero */
struct irq_info slots[IRQ_SLOTS_COUNT];
} __attribute__((packed));
extern const struct irq_routing_table intel_irq_routing_table;
#if CONFIG_GENERATE_PIRQ_TABLE==1
unsigned long copy_pirq_routing_table(unsigned long start);
unsigned long write_pirq_routing_table(unsigned long start);
#if CONFIG_PIRQ_ROUTE==1
void pirq_routing_irqs(unsigned long start);
void pirq_assign_irqs(const unsigned char pIntAtoD[4]);
#else
#define pirq_routing_irqs(start) {}
#endif
#else
#define copy_pirq_routing_table(start) (start)
#define write_pirq_routing_table(start) (start)
#endif
#endif /* ARCH_PIRQ_ROUTING_H */