// license:BSD-3-Clause
// copyright-holders:Olivier Galibert
/***************************************************************************
machine/lpci.h
Legacy PCI bus
***************************************************************************/
#ifndef LPCI_H
#define LPCI_H
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
typedef uint32_t (*pci_read_func)(device_t *pcibus, device_t *device, int function, int reg, uint32_t mem_mask);
typedef void (*pci_write_func)(device_t *pcibus, device_t *device, int function, int reg, uint32_t data, uint32_t mem_mask);
// ======================> pci_bus_legacy_device
class pci_bus_legacy_device : public device_t
{
public:
// construction/destruction
pci_bus_legacy_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
DECLARE_READ32_MEMBER( read );
DECLARE_WRITE32_MEMBER( write );
DECLARE_READ64_MEMBER( read_64be );
DECLARE_WRITE64_MEMBER( write_64be );
void set_busnum(int busnum) { m_busnum = busnum; }
void set_father(const char *father) { m_father = father; }
void set_device(int num, const char *tag, pci_read_func read_func, pci_write_func write_func) {
m_devtag[num] = tag; m_read_callback[num] = read_func; m_write_callback[num] = write_func; }
pci_bus_legacy_device *pci_search_bustree(int busnum, int devicenum, pci_bus_legacy_device *pcibus);
void add_sibling(pci_bus_legacy_device *sibling, int busnum);
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
virtual void device_post_load() override;
private:
uint8_t m_busnum;
const char * m_devtag[32];
pci_read_func m_read_callback[32];
pci_write_func m_write_callback[32];
const char * m_father;
device_t * m_device[32];
pci_bus_legacy_device * m_siblings[8];
uint8_t m_siblings_busnum[8];
int m_siblings_count;
offs_t m_address;
int8_t m_devicenum; // device number we are addressing
int8_t m_busnumber; // pci bus number we are addressing
pci_bus_legacy_device * m_busnumaddr; // pci bus we are addressing
};
// device type definition
extern const device_type PCI_BUS_LEGACY;
/***************************************************************************
DEVICE CONFIGURATION MACROS
***************************************************************************/
#define MCFG_PCI_BUS_LEGACY_ADD(_tag, _busnum) \
MCFG_DEVICE_ADD(_tag, PCI_BUS_LEGACY, 0) \
downcast<pci_bus_legacy_device *>(device)->set_busnum(_busnum);
#define MCFG_PCI_BUS_LEGACY_DEVICE(_devnum, _devtag, _configread, _configwrite) \
downcast<pci_bus_legacy_device *>(device)->set_device(_devnum, _devtag,_configread,_configwrite);
#define MCFG_PCI_BUS_LEGACY_SIBLING(_father_tag) \
downcast<pci_bus_legacy_device *>(device)->set_father(_father_tag);
#endif /* PCI_H */