1994-10-12 02:25:03 +00:00
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/**************************************************************************
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**
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1994-11-02 23:47:14 +00:00
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** $Id: pcireg.h,v 1.1 1994/10/12 02:25:03 se Exp $
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1994-10-12 02:25:03 +00:00
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**
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** Declarations for pci bus drivers.
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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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#ifndef __PCI_REG_H__
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#define __PCI_REG_H__
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/*-----------------------------------------------------------------
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**
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** main pci initialization function.
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** called at boot time from autoconf.c
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**
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**-----------------------------------------------------------------
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*/
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void pci_configure (void);
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/*-----------------------------------------------------------------
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**
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** The pci configuration id describes a pci device on the bus.
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** It is constructed from: bus, device & function numbers.
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**
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**-----------------------------------------------------------------
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*/
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typedef union {
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u_long cfg1;
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struct {
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u_char enable;
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u_char forward;
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u_short port;
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} cfg2;
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} pcici_t;
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/*-----------------------------------------------------------------
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**
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** Each pci device has an unique device id.
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** It is used to find a matching driver.
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**
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**-----------------------------------------------------------------
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*/
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typedef u_long pcidi_t;
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/*-----------------------------------------------------------------
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**
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** The pci driver structure.
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**
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** probe: Checks if the driver can support a device
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** with this type. The tag may be used to get
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** more info with pci_read_conf(). See below.
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** It returns a string with the devices name,
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** or a NULL pointer, if the driver cannot
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** support this device.
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**
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** attach: Allocate a control structure and prepare
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** it. This function may use the pci mapping
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** functions. See below.
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** (configuration id) or type.
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**
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** count: A pointer to a unit counter.
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** It's used by the pci configurator to
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** allocate unit numbers.
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**
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**-----------------------------------------------------------------
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*/
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struct pci_driver {
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char* (*probe ) (pcici_t tag, pcidi_t type);
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void (*attach) (pcici_t tag, int unit);
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u_long *count;
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};
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1994-11-02 23:47:14 +00:00
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/*-----------------------------------------------------------------
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**
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** The pci-devconf interface.
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**
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**-----------------------------------------------------------------
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*/
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struct pci_info {
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u_short pi_bus;
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u_short pi_device;
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};
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#define PCI_EXT_CONF_LEN (16)
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#define PCI_EXTERNAL_LEN (sizeof(struct pci_externalize_buffer))
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struct pci_externalize_buffer {
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struct pci_info peb_pci_info;
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u_long peb_config[PCI_EXT_CONF_LEN];
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};
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1994-10-12 02:25:03 +00:00
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/*-----------------------------------------------------------------
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**
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** Per device structure.
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**
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** An array of this structure should be created by the
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** config utility and live in "ioconf.c".
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**
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** At the moment it's created by hand and lives in
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** pci_config.c
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**
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** pd_driver:
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** a pointer to the driver structure.
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**
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** pd_name:
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** the name of the devices which are supported
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** by this driver for kernel messages.
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**
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** pd_flags:
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** for further study.
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**
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**-----------------------------------------------------------------
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*/
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struct pci_device {
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struct
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pci_driver* pd_driver;
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const char * pd_name;
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int pd_flags;
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};
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/*-----------------------------------------------------------------
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**
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** This table should be generated in file "ioconf.c"
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** by the config program.
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** It is used at boot time by the configuration function
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** pci_configure()
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**
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**-----------------------------------------------------------------
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*/
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extern struct pci_device pci_devtab[];
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/*-----------------------------------------------------------------
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**
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** Map a pci device to physical and virtual memory.
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**
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** The va and pa addresses are "in/out" parameters.
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** If they are 0 on entry, the function assigns an address.
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**
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** Entry selects the register in the pci configuration
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** space, which supplies the size of the region, and
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** receives the physical address.
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**
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** If there is any error, a message is written, and
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** the function returns with zero.
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** Else it returns with a value different to zero.
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**
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**-----------------------------------------------------------------
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*/
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int pci_map_mem (pcici_t tag, u_long entry, u_long * va, u_long * pa);
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/*-----------------------------------------------------------------
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**
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** Map a pci device to an io port area.
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**
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** *pa is an "in/out" parameter.
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** If it's 0 on entry, the function assigns an port number..
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**
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** Entry selects the register in the pci configuration
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** space, which supplies the size of the region, and
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** receives the port number.
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**
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** If there is any error, a message is written, and
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** the function returns with zero.
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** Else it returns with a value different to zero.
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**
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**-----------------------------------------------------------------
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*/
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int pci_map_port(pcici_t tag, u_long entry, u_short * pa);
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/*-----------------------------------------------------------------
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**
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** Map a pci interrupt to an isa irq line,
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** and enable the interrupt.
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**
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** func is the interrupt handler, arg is the argument
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** to this function.
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**
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** The maskptr argument should be &bio_imask,
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** &net_imask etc. or NULL.
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**
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** If there is any error, a message is written, and
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** the function returns with zero.
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** Else it returns with a value different to zero.
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**
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** A word of caution for FreeBSD 2.0:
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**
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** We use the register_intr() function.
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**
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** The interrupt line of the selected device is included
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** into the supplied mask: after the corresponding splXXX
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** this drivers interrupts are blocked.
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**
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** But in the interrupt handlers startup code ONLY
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** the interrupt of the driver is blocked, and NOT
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** all interrupts of the spl group.
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**
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** It may be required to additional block the group
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** interrupts by splXXX() inside the interrupt handler.
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**
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** In pre 2.0 kernels we emulate the register_intr
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** function. The emulating function blocks all interrupts
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** of the group in the interrupt handler prefix code.
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**
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**-----------------------------------------------------------------
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*/
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int pci_map_int (pcici_t tag, int (*func)(), void* arg, unsigned * maskptr);
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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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** pci_conf_mode():
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** Probes for a pci system.
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** Returns 1 or 2 for pci configuration mechanism.
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** Returns 0 if no pci system.
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**
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** pcitag():
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** Gets a handle for accessing the pci configuration
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** space.
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** This handle is given to the mapping functions (see
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** above) or to the read/write functions.
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**
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** pci_conf_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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** pci_conf_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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**-----------------------------------------------------------------
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*/
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int pci_conf_mode (void);
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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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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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**
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** Names for PCI configuration space registers.
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**
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** Copyright (c) 1994 Charles Hannum. All rights reserved.
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**
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**------------------------------------------------------------------
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*/
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/*
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* Device identification register; contains a vendor ID and a device ID.
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* We have little need to distinguish the two parts.
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*/
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#define PCI_ID_REG 0x00
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/*
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* Command and status register.
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*/
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#define PCI_COMMAND_STATUS_REG 0x04
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#define PCI_COMMAND_IO_ENABLE 0x00000001
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#define PCI_COMMAND_MEM_ENABLE 0x00000002
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#define PCI_COMMAND_MASTER_ENABLE 0x00000004
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#define PCI_COMMAND_SPECIAL_ENABLE 0x00000008
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#define PCI_COMMAND_INVALIDATE_ENABLE 0x00000010
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#define PCI_COMMAND_PALETTE_ENABLE 0x00000020
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#define PCI_COMMAND_PARITY_ENABLE 0x00000040
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#define PCI_COMMAND_STEPPING_ENABLE 0x00000080
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#define PCI_COMMAND_SERR_ENABLE 0x00000100
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#define PCI_COMMAND_BACKTOBACK_ENABLE 0x00000200
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#define PCI_STATUS_BACKTOBACK_OKAY 0x00800000
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#define PCI_STATUS_PARITY_ERROR 0x01000000
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#define PCI_STATUS_DEVSEL_FAST 0x00000000
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#define PCI_STATUS_DEVSEL_MEDIUM 0x02000000
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#define PCI_STATUS_DEVSEL_SLOW 0x04000000
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#define PCI_STATUS_DEVSEL_MASK 0x06000000
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#define PCI_STATUS_TARGET_TARGET_ABORT 0x08000000
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#define PCI_STATUS_MASTER_TARGET_ABORT 0x10000000
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#define PCI_STATUS_MASTER_ABORT 0x20000000
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#define PCI_STATUS_SPECIAL_ERROR 0x40000000
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#define PCI_STATUS_PARITY_DETECT 0x80000000
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/*
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* Class register; defines basic type of device.
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*/
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#define PCI_CLASS_REG 0x08
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#define PCI_CLASS_MASK 0xff000000
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#define PCI_SUBCLASS_MASK 0x00ff0000
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/* base classes */
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#define PCI_CLASS_PREHISTORIC 0x00000000
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#define PCI_CLASS_MASS_STORAGE 0x01000000
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#define PCI_CLASS_NETWORK 0x02000000
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#define PCI_CLASS_DISPLAY 0x03000000
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#define PCI_CLASS_MULTIMEDIA 0x04000000
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#define PCI_CLASS_MEMORY 0x05000000
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#define PCI_CLASS_BRIDGE 0x06000000
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#define PCI_CLASS_UNDEFINED 0xff000000
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/* 0x00 prehistoric subclasses */
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#define PCI_SUBCLASS_PREHISTORIC_MISC 0x00000000
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#define PCI_SUBCLASS_PREHISTORIC_VGA 0x00010000
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/* 0x01 mass storage subclasses */
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#define PCI_SUBCLASS_MASS_STORAGE_SCSI 0x00000000
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#define PCI_SUBCLASS_MASS_STORAGE_IDE 0x00010000
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#define PCI_SUBCLASS_MASS_STORAGE_FLOPPY 0x00020000
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#define PCI_SUBCLASS_MASS_STORAGE_IPI 0x00030000
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#define PCI_SUBCLASS_MASS_STORAGE_MISC 0x00800000
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/* 0x02 network subclasses */
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#define PCI_SUBCLASS_NETWORK_ETHERNET 0x00000000
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#define PCI_SUBCLASS_NETWORK_TOKENRING 0x00010000
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#define PCI_SUBCLASS_NETWORK_FDDI 0x00020000
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#define PCI_SUBCLASS_NETWORK_MISC 0x00800000
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/* 0x03 display subclasses */
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#define PCI_SUBCLASS_DISPLAY_VGA 0x00000000
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#define PCI_SUBCLASS_DISPLAY_XGA 0x00010000
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#define PCI_SUBCLASS_DISPLAY_MISC 0x00800000
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/* 0x04 multimedia subclasses */
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#define PCI_SUBCLASS_MULTIMEDIA_VIDEO 0x00000000
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#define PCI_SUBCLASS_MULTIMEDIA_AUDIO 0x00010000
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#define PCI_SUBCLASS_MULTIMEDIA_MISC 0x00800000
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/* 0x05 memory subclasses */
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#define PCI_SUBCLASS_MEMORY_RAM 0x00000000
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#define PCI_SUBCLASS_MEMORY_FLASH 0x00010000
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#define PCI_SUBCLASS_MEMORY_MISC 0x00800000
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/* 0x06 bridge subclasses */
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#define PCI_SUBCLASS_BRIDGE_HOST 0x00000000
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#define PCI_SUBCLASS_BRIDGE_ISA 0x00010000
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#define PCI_SUBCLASS_BRIDGE_EISA 0x00020000
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#define PCI_SUBCLASS_BRIDGE_MC 0x00030000
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#define PCI_SUBCLASS_BRIDGE_PCI 0x00040000
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#define PCI_SUBCLASS_BRIDGE_PCMCIA 0x00050000
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#define PCI_SUBCLASS_BRIDGE_MISC 0x00800000
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/*
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* Mapping registers
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*/
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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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/*
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* Interrupt configuration register
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*/
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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_PIN_NONE 0x00
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#define PCI_INTERRUPT_PIN_A 0x01
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#define PCI_INTERRUPT_PIN_B 0x02
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#define PCI_INTERRUPT_PIN_C 0x03
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#define PCI_INTERRUPT_PIN_D 0x04
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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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#define PCI_INTERRUPT_LINE_INSERT(x,v) (((x) & ~PCI_INTERRUPT_LINE_MASK) | ((v) << 0))
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#endif /* __PCI_REG_H__ */
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