path.h

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#ifndef DEVICE_PATH_H
#define DEVICE_PATH_H
 
#include <stdint.h>
 
enum device_path_type {
        DEVICE_PATH_NONE = 0,
        DEVICE_PATH_ROOT,
        DEVICE_PATH_PCI,
        DEVICE_PATH_PNP,
        DEVICE_PATH_I2C,
        DEVICE_PATH_APIC,
        DEVICE_PATH_DOMAIN,
        DEVICE_PATH_CPU_CLUSTER,
        DEVICE_PATH_CPU,
        DEVICE_PATH_CPU_BUS,
        DEVICE_PATH_IOAPIC,
        DEVICE_PATH_GENERIC,
        DEVICE_PATH_SPI,
        DEVICE_PATH_USB,
        DEVICE_PATH_MMIO,
        DEVICE_PATH_GPIO,
 
        /*
         * When adding path types to this table, please also update the
         * DEVICE_PATH_NAMES macro below.
         */
};
 
#define DEVICE_PATH_NAMES {                     \
                "DEVICE_PATH_NONE",             \
                "DEVICE_PATH_ROOT",             \
                "DEVICE_PATH_PCI",              \
                "DEVICE_PATH_PNP",              \
                "DEVICE_PATH_I2C",              \
                "DEVICE_PATH_APIC",             \
                "DEVICE_PATH_DOMAIN",           \
                "DEVICE_PATH_CPU_CLUSTER",      \
                "DEVICE_PATH_CPU",              \
                "DEVICE_PATH_CPU_BUS",          \
                "DEVICE_PATH_IOAPIC",           \
                "DEVICE_PATH_GENERIC",          \
                "DEVICE_PATH_SPI",              \
                "DEVICE_PATH_USB",              \
                "DEVICE_PATH_MMIO",             \
                "DEVICE_PATH_GPIO",             \
}
 
struct domain_path {
        unsigned int domain;
};
 
struct pci_path {
        unsigned int devfn;
};
 
struct pnp_path {
        unsigned int port;
        unsigned int device;
};
 
struct i2c_path {
        unsigned int device;
        unsigned int mode_10bit;
};
 
struct spi_path {
        unsigned int cs;
};
 
struct apic_path {
        unsigned int apic_id;
        unsigned int package_id;
        unsigned int node_id;
        unsigned int core_id;
        unsigned int thread_id;
};
 
struct ioapic_path {
        unsigned int ioapic_id;
};
 
struct cpu_cluster_path {
        unsigned int cluster;
};
 
struct cpu_path {
        unsigned int id;
};
 
struct cpu_bus_path {
        unsigned int id;
};
 
struct generic_path {
        unsigned int id;
        unsigned int subid;
};
 
struct usb_path {
        unsigned int port_type;
        unsigned int port_id;
};
 
struct mmio_path {
        uintptr_t addr;
};
 
struct gpio_path {
        unsigned int id;
};
 
struct device_path {
        enum device_path_type type;
        union {
                struct pci_path         pci;
                struct pnp_path         pnp;
                struct i2c_path         i2c;
                struct apic_path        apic;
                struct ioapic_path      ioapic;
                struct domain_path      domain;
                struct cpu_cluster_path cpu_cluster;
                struct cpu_path         cpu;
                struct cpu_bus_path     cpu_bus;
                struct generic_path     generic;
                struct spi_path         spi;
                struct usb_path         usb;
                struct mmio_path        mmio;
                struct gpio_path        gpio;
        };
};
 
#define DEVICE_PATH_MAX 40
#define BUS_PATH_MAX (DEVICE_PATH_MAX+10)
 
extern const char *dev_path_name(enum device_path_type type);
 
#endif /* DEVICE_PATH_H */