93 lines
3.2 KiB
C
93 lines
3.2 KiB
C
|
/* -*- Mode: C; c-basic-offset: 3 -*-
|
||
|
|
*
|
||
|
|
* pci.h - Simple PCI configuration interface. This implementation
|
||
|
|
* only supports type 1 accesses to configuration space,
|
||
|
|
* and it ignores the PCI BIOS.
|
||
|
|
*
|
||
|
|
* This file is part of Metalkit, a simple collection of modules for
|
||
|
|
* writing software that runs on the bare metal. Get the latest code
|
||
|
|
* at http://svn.navi.cx/misc/trunk/metalkit/
|
||
|
|
*
|
||
|
|
* Copyright (c) 2008-2009 Micah Dowty
|
||
|
|
*
|
||
|
|
* Permission is hereby granted, free of charge, to any person
|
||
|
|
* obtaining a copy of this software and associated documentation
|
||
|
|
* files (the "Software"), to deal in the Software without
|
||
|
|
* restriction, including without limitation the rights to use,
|
||
|
|
* copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||
|
|
* copies of the Software, and to permit persons to whom the
|
||
|
|
* Software is furnished to do so, subject to the following
|
||
|
|
* conditions:
|
||
|
|
*
|
||
|
|
* The above copyright notice and this permission notice shall be
|
||
|
|
* included in all copies or substantial portions of the Software.
|
||
|
|
*
|
||
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
|
||
|
|
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
||
|
|
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
|
||
|
|
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
|
||
|
|
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
||
|
|
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
|
||
|
|
* OTHER DEALINGS IN THE SOFTWARE.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef __PCI_H__
|
||
|
|
#define __PCI_H__
|
||
|
|
|
||
|
|
#include "types.h"
|
||
|
|
|
||
|
|
typedef union PCIConfigSpace {
|
||
|
|
uint32 words[16];
|
||
|
|
struct {
|
||
|
|
uint16 vendorId;
|
||
|
|
uint16 deviceId;
|
||
|
|
uint16 command;
|
||
|
|
uint16 status;
|
||
|
|
uint16 revisionId;
|
||
|
|
uint8 subclass;
|
||
|
|
uint8 classCode;
|
||
|
|
uint8 cacheLineSize;
|
||
|
|
uint8 latTimer;
|
||
|
|
uint8 headerType;
|
||
|
|
uint8 BIST;
|
||
|
|
uint32 BAR[6];
|
||
|
|
uint32 cardbusCIS;
|
||
|
|
uint16 subsysVendorId;
|
||
|
|
uint16 subsysId;
|
||
|
|
uint32 expansionRomAddr;
|
||
|
|
uint32 reserved0;
|
||
|
|
uint32 reserved1;
|
||
|
|
uint8 intrLine;
|
||
|
|
uint8 intrPin;
|
||
|
|
uint8 minGrant;
|
||
|
|
uint8 maxLatency;
|
||
|
|
};
|
||
|
|
} __attribute__ ((__packed__)) PCIConfigSpace;
|
||
|
|
|
||
|
|
typedef struct PCIAddress {
|
||
|
|
uint8 bus, device, function;
|
||
|
|
} PCIAddress;
|
||
|
|
|
||
|
|
typedef struct PCIScanState {
|
||
|
|
uint16 vendorId;
|
||
|
|
uint16 deviceId;
|
||
|
|
PCIAddress nextAddr;
|
||
|
|
PCIAddress addr;
|
||
|
|
} PCIScanState;
|
||
|
|
|
||
|
|
fastcall uint32 PCI_ConfigRead32(const PCIAddress *addr, uint16 offset);
|
||
|
|
fastcall uint16 PCI_ConfigRead16(const PCIAddress *addr, uint16 offset);
|
||
|
|
fastcall uint8 PCI_ConfigRead8(const PCIAddress *addr, uint16 offset);
|
||
|
|
fastcall void PCI_ConfigWrite32(const PCIAddress *addr, uint16 offset, uint32 data);
|
||
|
|
fastcall void PCI_ConfigWrite16(const PCIAddress *addr, uint16 offset, uint16 data);
|
||
|
|
fastcall void PCI_ConfigWrite8(const PCIAddress *addr, uint16 offset, uint8 data);
|
||
|
|
|
||
|
|
fastcall Bool PCI_ScanBus(PCIScanState *state);
|
||
|
|
fastcall Bool PCI_FindDevice(uint16 vendorId, uint16 deviceId, PCIAddress *addrOut);
|
||
|
|
fastcall void PCI_SetBAR(const PCIAddress *addr, int index, uint32 value);
|
||
|
|
fastcall uint32 PCI_GetBARAddr(const PCIAddress *addr, int index);
|
||
|
|
fastcall void PCI_SetMemEnable(const PCIAddress *addr, Bool enable);
|
||
|
|
|
||
|
|
#endif /* __PCI_H__ */
|