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99 lines
3.6 KiB
C
99 lines
3.6 KiB
C
/**************************************************************************
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**
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** $Id: pcibus.h,v 1.3 1995/11/21 12:54:54 bde Exp $
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**
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** Declarations for pci bus driver.
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**
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** FreeBSD
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**
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**-------------------------------------------------------------------------
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**
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** Copyright (c) 1995 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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#ifndef __PCI_BUS_H__
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#define __PCI_BUS_H__ "pl1 95/03/13"
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/*-----------------------------------------------------------------
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**
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** The following functions are provided by the pci bios.
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** They are used only by the pci configuration.
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**
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** pcibus_setup():
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** Probes for a pci system.
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** Sets pci_maxdevice and pci_mechanism.
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**
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** pcibus_tag():
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** Creates a handle for pci configuration space access.
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** This handle is given to the read/write functions.
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**
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** pcibus_ftag():
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** Creates a modified handle.
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**
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** pcibus_read():
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** Read a long word from the pci configuration space.
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** Requires a tag (from pcitag) and the register
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** number (should be a long word alligned one).
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**
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** pcibus_write():
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** Writes a long word to the pci configuration space.
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** Requires a tag (from pcitag), the register number
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** (should be a long word alligned one), and a value.
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**
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** pcibus_regirq():
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** Register an interrupt handler for a pci device.
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** Requires a tag (from pcitag), the register number
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** (should be a long word alligned one), and a value.
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**
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**-----------------------------------------------------------------
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*/
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struct pcibus {
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char *pb_name;
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void (*pb_setup ) (void);
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pcici_t (*pb_tag ) (u_char bus, u_char device, u_char func);
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pcici_t (*pb_ftag ) (pcici_t tag, u_char func);
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u_long (*pb_read ) (pcici_t tag, u_long reg);
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void (*pb_write ) (pcici_t tag, u_long reg, u_long data);
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unsigned pb_maxirq;
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int (*pb_iattach) (int irq, inthand2_t *func, int arg,
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unsigned *maskptr);
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int (*pb_idetach) (int irq, inthand2_t *func);
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int (*pb_imaskinc)(int irq, unsigned *maskptr);
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int (*pb_imaskexc)(int irq, unsigned *maskptr);
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};
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#define PCI_MAX_IRQ (16)
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/*
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** The following structure should be generated by the driver
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*/
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extern struct linker_set pcibus_set;
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#endif
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