#ifndef DOSEMU_PCI_H
#define DOSEMU_PCI_H

/* definitions from the Linux kernel's linux/pci.h */
#define PCI_VENDOR_ID			0x00
#define PCI_VENDOR_ID_INTEL		0x8086
#define PCI_VENDOR_ID_COMPAQ		0x0e11
#define PCI_BASE_ADDRESS_0		0x10
#define PCI_BASE_ADDRESS_5		0x24
#define PCI_BASE_ADDRESS_SPACE_IO	0x01
#define PCI_BASE_ADDRESS_SPACE_MEMORY	0x00
#define PCI_BASE_ADDRESS_MEM_MASK	(~0x0fUL)
#define PCI_BASE_ADDRESS_IO_MASK	(~0x03UL)
#define PCI_ROM_ADDRESS			0x30
#define PCI_ROM_ADDRESS_MASK		(~0x7ffUL)
#define PCI_CLASS_DISPLAY_VGA		0x0300
#define PCI_CLASS_BRIDGE_HOST		0x0600
#define PCI_CLASS_DEVICE		0x0a

/* other definitions */
#define PCIBIOS_PCI_FUNCTION_ID 	0xb1
#define PCIBIOS_PCI_BIOS_PRESENT 	0xb101
#define PCIBIOS_FIND_PCI_DEVICE		0xb102
#define PCIBIOS_FIND_PCI_CLASS_CODE	0xb103
#define PCIBIOS_GENERATE_SPECIAL_CYCLE	0xb106
#define PCIBIOS_READ_CONFIG_BYTE	0xb108
#define PCIBIOS_READ_CONFIG_WORD	0xb109
#define PCIBIOS_READ_CONFIG_DWORD	0xb10a
#define PCIBIOS_WRITE_CONFIG_BYTE	0xb10b
#define PCIBIOS_WRITE_CONFIG_WORD	0xb10c
#define PCIBIOS_WRITE_CONFIG_DWORD	0xb10d
#define PCIBIOS_GET_IRQ_ROUTING_OPTIONS 0xb10e
#define PCIBIOS_SET_PCI_IRQ             0xb10f

#define PCIBIOS_STAT_SUCCESSFUL     0x00
#define PCIBIOS_FUNC_NOT_SUPPORTED  0x81
#define PCIBIOS_BAD_VENDOR_ID       0x83
#define PCIBIOS_DEVICE_NOT_FOUND    0x86
#define PCIBIOS_BAD_REGISTER_NUMBER 0x87
#define PCIBIOS_SET_FAILED          0x88
#define PCIBIOS_BUFFER_TOO_SMALL    0x89

/* BIOS32 signature: "_32_" */
#define BIOS32_SIGNATURE	(('_' << 0) + ('3' << 8) + ('2' << 16) + ('_' << 24))

/* PCI signature: "PCI " */
#define PCI_SIGNATURE		(('P' << 0) + ('C' << 8) + ('I' << 16) + (' ' << 24))

/* PCI service signature: "$PCI" */
#define PCI_SERVICE		(('$' << 0) + ('P' << 8) + ('C' << 16) + ('I' << 24))

/* Configuration mechanism 1 - two 32-bit I/O ports */

#define PCI_CONF_ADDR	0xcf8
#define PCI_CONF_DATA	0xcfc
#define PCI_EN 0x80000000

#define PCI_MODE2_FORWARD_REG 0xCFA
#define PCI_MODE2_ENABLE_REG 0xCF8

typedef struct _pciRec {
    int enabled, ext_enabled;
    unsigned short bdf;
    unsigned short vendor;
    unsigned short device;
    unsigned long cls;
    struct {
        int type;
        unsigned long base;
        unsigned long size;
        unsigned long rawsize;
    } region[7];
    unsigned int header[16];
    struct _pciRec *next;
} pciRec, *pciPtr;

struct pci_funcs {
    const char *name;
    int (*open)(unsigned char bus, unsigned char device, unsigned char fn);
    unsigned long (*read)(unsigned char bus, unsigned char device,
			  unsigned char fn, unsigned long reg, int len);
    void (*write)(unsigned char bus, unsigned char device,
		  unsigned char fn, unsigned long num, unsigned long val,
		  int len);
    int (*read_header) (unsigned char bus, unsigned char device,
			unsigned char fn, unsigned int *buf);
    int (*check_device_present)(unsigned char bus, unsigned char device,
				unsigned char fn);
};

void pci_bios(void);
int pcibios_init(void);
pciRec *pcibios_find_class(unsigned long cls,  int num);
pciRec *pcibios_find_bdf(unsigned short bdf);

struct pci_funcs *pci_check_conf(void);
extern struct pci_funcs *pciConfigType;

int pci_setup (void);
pciRec *pciemu_setup(unsigned long cls);

#endif /* DOSEMU_PCI_H */