FreeBSD/Linux Kernel Cross Reference
sys/pci/pci_ioctl.h

     #ifndef _PCI_IOCTL_H
     #define _PCI_IOCTL_H    1
     
     #include <sys/ioccom.h>
     
     struct pcisel {
         u_char              pc_bus;         /* bus number */
         u_char              pc_dev;         /* device on this bus */
         u_char              pc_func;        /* function on this device */
    };
    
    struct  pci_conf {
        struct pcisel       pc_sel;         /* bus+slot+function */
        u_char              pc_hdr;         /* PCI header type */
        pcidi_t             pc_devid;       /* device ID */
        pcidi_t             pc_subid;       /* subvendor ID */
        u_int32_t           pc_class;       /* device class */
        struct pci_device   *pc_dvp;        /* device driver pointer or NULL */
        struct pcicb        *pc_cb;         /* pointer to bus parameters */
    };
    
    struct  pci_conf_io {
        size_t              pci_len;        /* length of buffer */
        struct pci_conf     *pci_buf;       /* buffer */
    };
    
    struct pci_io {
        struct pcisel       pi_sel;         /* device to operate on */
        int                 pi_reg;         /* configuration register to examine */
        int                 pi_width;       /* width (in bytes) of read or write */
        u_int32_t           pi_data;        /* data to write or result of read */
    };
            
    
    #define PCIOCGETCONF    _IOWR('p', 1, struct pci_conf_io)
    #define PCIOCREAD       _IOWR('p', 2, struct pci_io)
    #define PCIOCWRITE      _IOWR('p', 3, struct pci_io)
    #define PCIOCATTACHED   _IOWR('p', 4, struct pci_io)
    
    #endif /* _PCI_IOCTL_H */

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