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os-k/include/io/pci.h

81 lines
3.1 KiB
C

//----------------------------------------------------------------------------//
// GNU GPL OS/K //
// //
// Desc: PCI driver //
// //
// //
// Copyright © 2018-2020 The OS/K Team //
// //
// This file is part of OS/K. //
// //
// OS/K 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 3 of the License, or //
// any later version. //
// //
// OS/K 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 OS/K. If not, see <https://www.gnu.org/licenses/>. //
//----------------------------------------------------------------------------//
#ifndef _KERNEL_H
#include <kernel.h>
#endif
#ifndef _IO_PCI_H
#define _IO_PCI_H
//
// Device registers offsets
//
#define PCI_REG_VENDOR 0
#define PCI_REG_DEVICE 2
#define PCI_REG_COMMAND 4
#define PCI_REG_STATUS 6
//..
#define PCI_REG_BAR0 0x10
#define PCI_REG_BAR1 0x14
#define PCI_REG_BAR2 0x18
#define PCI_REG_BAR3 0x1C
#define PCI_REG_BAR4 0x20
#define PCI_REG_BAR5 0x24
//..
#define PCI_REG_INTERRUPT_LINE 0x3C
//..
//----------------------------------------------------------------------------//
struct PciDev_t {
ushort vendorID;
ushort deviceID;
void* configAddr;
};
//----------------------------------------------------------------------------//
void IoInitPCI();
void IoPciEnumerate();
PciDev_t *IoPciGetDevice(ushort vendorID, ushort deviceID);
uchar IoPciReadConfigByte(PciDev_t *device, ushort offset);
ushort IoPciReadConfigWord(PciDev_t *device, ushort offset);
uint IoPciReadConfigDWord(PciDev_t *device, ushort offset);
void IoPciWriteConfigByte(PciDev_t *device, ushort offset, uchar data);
void IoPciWriteConfigWord(PciDev_t *device, ushort offset, ushort data);
void IoPciWriteConfigDWord(PciDev_t *device, ushort offset, uint data);
#endif