115 lines
3.6 KiB
C
115 lines
3.6 KiB
C
/**************************************************************************
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**
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** $Id: pcibios.h,v 2.0.0.1 94/08/18 23:05:36 wolf Exp $
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**
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** #define for pci-bus bios functions.
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**
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** 386bsd / FreeBSD
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**
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**-------------------------------------------------------------------------
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**
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** Copyright (c) 1994 Wolfgang Stanglmeier. All rights reserved.
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**
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** Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions
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** are met:
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** 1. Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** 2. Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in the
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** documentation and/or other materials provided with the distribution.
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** 3. The name of the author may not be used to endorse or promote products
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** derived from this software without specific prior written permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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**
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**-------------------------------------------------------------------------
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**
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** $Log: pcibios.h,v $
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** Revision 2.0.0.1 94/08/18 23:05:36 wolf
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**
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** Copyright message.
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** New function: pci_last_bus().
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** Symbolic names for pci configuration space registers.
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**
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** Revision 2.0 94/07/10 15:53:32 wolf
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** FreeBSD release.
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**
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** Revision 1.0 94/06/07 20:02:23 wolf
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** Beta release.
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**
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***************************************************************************
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*/
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#ifndef __PCIBIOS_H__
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#define __PCIBIOS_H__
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/*
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** the availability of a pci bus.
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** configuration mode (1 or 2)
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** 0 if no pci bus found.
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*/
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int pci_conf_mode (void);
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/*
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** The number of the last available pci bus.
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*/
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int pci_last_bus (void);
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/*
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** get a "ticket" for accessing a pci device
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** configuration space.
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*/
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pcici_t pcitag (unsigned char bus,
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unsigned char device,
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unsigned char func);
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/*
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** read or write the configuration space.
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*/
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u_long pci_conf_read (pcici_t tag, u_long reg );
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void pci_conf_write (pcici_t tag, u_long reg, u_long data);
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/*
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** Names for PCI configuration space registers.
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** Copied from pcireg.h
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*/
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#define PCI_ID_REG 0x00
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#define PCI_COMMAND_STATUS_REG 0x04
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#define PCI_COMMAND_MEM_ENABLE 0x00000002
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#define PCI_MAP_REG_START 0x10
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#define PCI_MAP_REG_END 0x28
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#define PCI_MAP_MEMORY 0x00000000
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#define PCI_MAP_IO 0x00000001
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#define PCI_MAP_MEMORY_TYPE_32BIT 0x00000000
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#define PCI_MAP_MEMORY_TYPE_32BIT_1M 0x00000002
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#define PCI_MAP_MEMORY_TYPE_64BIT 0x00000004
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#define PCI_MAP_MEMORY_TYPE_MASK 0x00000006
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#define PCI_MAP_MEMORY_CACHABLE 0x00000008
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#define PCI_MAP_MEMORY_ADDRESS_MASK 0xfffffff0
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#define PCI_INTERRUPT_REG 0x3c
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#define PCI_INTERRUPT_PIN_MASK 0x0000ff00
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#define PCI_INTERRUPT_PIN_EXTRACT(x) ((((x) & PCI_INTERRUPT_PIN_MASK) >> 8) & 0xff)
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#define PCI_INTERRUPT_LINE_MASK 0x000000ff
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#define PCI_INTERRUPT_LINE_EXTRACT(x) ((((x) & PCI_INTERRUPT_LINE_MASK) >> 0) & 0xff)
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#endif
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