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/*
* Copyright (C) 2002-2021 The DOSBox Team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef DOSBOX_PCI_H
#define DOSBOX_PCI_H
#define PCI_FUNCTIONALITY_ENABLED 1
#if defined PCI_FUNCTIONALITY_ENABLED
#define PCI_MAX_PCIDEVICES 10
#define PCI_MAX_PCIFUNCTIONS 8
class PCI_Device {
private:
Bits pci_id, pci_subfunction;
uint16_t vendor_id, device_id;
// subdevices declarations, they will respond to pci functions 1 to 7
// (main device is attached to function 0)
Bitu num_subdevices;
PCI_Device* subdevices[PCI_MAX_PCIFUNCTIONS-1];
public:
PCI_Device(uint16_t vendor, uint16_t device);
Bits PCIId(void) {
return pci_id;
}
Bits PCISubfunction(void) {
return pci_subfunction;
}
uint16_t VendorID(void) {
return vendor_id;
}
uint16_t DeviceID(void) {
return device_id;
}
void SetPCIId(Bitu number, Bits subfct);
bool AddSubdevice(PCI_Device* dev);
void RemoveSubdevice(Bits subfct);
PCI_Device* GetSubdevice(Bits subfct);
uint16_t NumSubdevices(void) {
if (num_subdevices>PCI_MAX_PCIFUNCTIONS-1) return (uint16_t)(PCI_MAX_PCIFUNCTIONS-1);
return (uint16_t)num_subdevices;
}
Bits GetNextSubdeviceNumber(void) {
if (num_subdevices>=PCI_MAX_PCIFUNCTIONS-1) return -1;
return (Bits)num_subdevices+1;
}
virtual Bits ParseReadRegister(uint8_t regnum)=0;
virtual bool OverrideReadRegister(uint8_t regnum, uint8_t* rval, uint8_t* rval_mask)=0;
virtual Bits ParseWriteRegister(uint8_t regnum,uint8_t value)=0;
virtual bool InitializeRegisters(uint8_t registers[256])=0;
};
bool PCI_IsInitialized();
RealPt PCI_GetPModeInterface(void);
#endif
void PCI_AddSST_Device(Bitu type);
void PCI_RemoveSST_Device(void);
#endif
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