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[ repository copy of sys/pci/pci_ioctl.h to sys/sys/pciio.h happened in the

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background ]

Rename sys/pci/pci_ioctl.h to sys/sys/pciio.h to make it easier for
userland programs to use this interface.  Reformat the file, and add a
BSD-style copyright to it.

Add a new man page for pci(4).  The PCIOCGETCONF, PCIOCREAD, and PCIOCWRITE
ioctls are documented, but the PCIOCATTACHED ioctl is not documented
because it is not implemented.

Change includes of <pci/pci_ioctl.h> to <sys/pciio.h> or remove them
altogether.  In many cases, pci_ioctl.h was unused.

Reviewed by:	steve
This commit is contained in:
ken 1999-12-08 17:44:04 +00:00
parent 9c42a64866
commit cdf669dd0c
15 changed files with 381 additions and 237 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
share/man/man4/Makefile
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@ -7,7 +7,7 @@ MAN4= ahc.4 alpm.4 atkbd.4 atkbdc.4 blackhole.4 bpf.4 \
icmp.4 ifmib.4 iic.4 iicbb.4 iicbus.4 iicsmb.4 \
inet.4 intpm.4 intro.4 ip.4 ipfirewall.4 keyboard.4 kld.4 \
lo.4 lp.4 lpbb.4 lpt.4 mem.4 mouse.4 mtio.4 natm.4 ncr.4 \
netintro.4 null.4 ohci.4 pass.4 pcm.4 pcvt.4 \
netintro.4 null.4 ohci.4 pass.4 pci.4 pcm.4 pcvt.4 \
ppbus.4 ppi.4 ppp.4 psm.4 pt.4 pty.4 rl.4 \
route.4 sa.4 screen.4 scsi.4 \
sd.4 sf.4 si.4 sio.4 sis.4 sk.4 sl.4 smb.4 smbus.4 smp.4 snp.4 \

295
share/man/man4/pci.4 Normal file
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@ -0,0 +1,295 @@
.\"
.\" Copyright (c) 1999 Kenneth D. Merry.
.\" All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. The name of the author may not be used to endorse or promote products
.\" derived from this software without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.\" $FreeBSD$
.\"
.Dd October 24, 1999
.Dt PCI 4
.Os FreeBSD 4.0
.Sh NAME
.Nm pci
.Nd Generic PCI driver
.Sh SYNOPSYIS
.Cd controller pci0
.Sh DESCRIPTION
The
.Nm pci
driver provides a way for userland programs to read and write
.Tn PCI
configuration registers. It also provides a way for userland programs to
get a list of all
.Tn PCI
devices, or all
.Tn PCI
devices that match various patterns.
.Pp
Since the
.Nm pci
driver provides a write interface for
.Tn PCI
configuration registers, system administrators should exercise caution when
granting access to the
.Nm pci
device. If used improperly, this driver can allow userland applications to
crash a machine or cause data loss.
.Sh KERNEL CONFIGURATION
It is only necessary to specify one
.Nm pci
controller in the kernel. Additional
.Tn PCI
busses are handled automatically as they are encountered.
.Sh IOCTLS
The following
.Xr ioctl 2
calls are supported by the
.Nm pci
driver. They are defined in the header file
.Aq Pa sys/pciio.h .
.Bl -tag -width 012345678901234
.Pp
.It PCIOCGETCONF
This
.Xr ioctl 2
takes a
.Va pci_conf_io
structure. It allows the user to retrieve information on all
.Tn PCI
devices in the system, or on
.Tn PCI
devices matching patterns supplied by the user.
The
.Va pci_conf_io
structure consists of a number of fields:
.Bl -tag -width match_buf_len
.It pat_buf_len
The length, in bytes, of the buffer filled with user-supplied patterns.
.It num_patterns
The number of user-supplied patterns.
.It patterns
Pointer to a buffer filled with user-supplied patterns.
.Va patterns
is a pointer to
.Va num_patterns
.Va pci_match_conf
structures. The
.Va pci_match_conf
structure consists of the following elements:
.Bl -tag -width pd_vendor
.It pc_sel
.Tn PCI
bus, slot and function.
.It pd_name
.Tn PCI
device driver name.
.It pd_unit
.Tn PCI
device driver unit number.
.It pc_vendor
.Tn PCI
vendor ID.
.It pc_device
.Tn PCI
device ID.
.It pc_class
.Tn PCI
device class.
.It flags
The flags describe which of the fields the kernel should match against.
A device must match all specified fields in order to be returned. The
match flags are enumerated in the
.Va pci_getconf_flags
structure.
Hopefully the flag values are obvious enough that they don't need to
described in detail.
.El
.It match_buf_len
Length of the
.Va matches
buffer allocated by the user to hold the results of the
.Dv PCIOCGETCONF
query.
.It num_matches
Number of matches returned by the kernel.
.It matches
Buffer containing matching devices returned by the kernel. The items in
this buffer are of type
.Va pci_conf ,
which consists of the following items:
.Bl -tag -width pc_subvendor
.It pc_sel
.Tn PCI
bus, slot and function.
.It pc_hdr
.Tn PCI
header type.
.It pc_subvendor
.Tn PCI
subvendor ID.
.It pc_subdevice
.Tn PCI
subdevice ID.
.It pc_vendor
.Tn PCI
vendor ID.
.It pc_device
.Tn PCI
device ID.
.It pc_class
.Tn PCI
device class.
.It pc_subclass
.Tn PCI
device subclass.
.It pc_progif
.Tn PCI
device programming interface.
.It pc_revid
.Tn PCI
revision ID.
.It pd_name
Driver name.
.It pd_unit
Driver unit number.
.El
.It offset
The offset is passed in by the user to tell the kernel where it should
start traversing the device list. The value passed out by the kernel
points to the record immediately after the last one returned. The user may
pass the value returned by the kernel in subsequent calls to the
.Dv PCIOCGETCONF
ioctl. If the user does not intend to use the offset, it must be set to
zero.
.It generation
.Tn PCI
configuration generation. This value only needs to be set if the offset is
set. The kernel will compare the current generation number of its internal
device list to the generation passed in by the user to determine whether
its device list has changed since the user last called the
.Dv PCIOCGETCONF
ioctl. If the device list has changed, a status of
.Va PCI_GETCONF_LIST_CHANGED
will be passed back.
.It status
The status tells the user the disposition of his request for a device list.
The possible status values are:
.Bl -ohang
.It PCI_GETCONF_LAST_DEVICE
This means that there are no more devices in the PCI device list after the
ones returned in the
.Va matches
buffer.
.It PCI_GETCONF_LIST_CHANGED
This status tells the user that the
.Tn PCI
device list has changed since his last call to the
.Dv PCIOCGETCONF
ioctl and he must reset the
.Va offset
and
.Va generation
to zero to start over at the beginning of the list.
.It PCI_GETCONF_MORE_DEVS
This tells the user that his buffer was not large enough to hold all of the
remaining devices in the device list that possibly match his criteria. It
is possible for this status to be returned, even when none of the remaining
devices in the list would match the user's criteria.
.It PCI_GETCONF_ERROR
This indicates a general error while servicing the user's request. A more
specific indication of the problem may or may not be printed in the kernel
message buffer (and by implication, the system console).
.El
.El
.It PCIOCREAD
This
.Xr ioctl 2
reads the
.Tn PCI
configuration registers specified by the passed-in
.Va pci_io
structure. The
.Va pci_io
structure consists of the following fields:
.Bl -tag -width pi_width
.It pi_sel
A
.Va pcisel
structure which specifies the bus, slot and function the user would like to
query.
.It pi_reg
The
.Tn PCI
configuration register the user would like to access.
.It pi_width
The width, in bytes, of the data the user would like to read. This value
may be either 1, 2, or 4. 3-byte reads and reads larger than 4 bytes are
not supported.
.It pi_data
The data returned by the kernel.
.El
.It PCIOCWRITE
This
.Xr ioctl 2
allows users to write to the
.Tn PCI
specified in the passed-in
.Va pci_io
structure. The
.Va pci_io
structure is described above. The limitations on data width described for
reading registers, above, also apply to writing
.Tn PCI
configuration registers.
.El
.Sh FILES
.Bl -tag -width 01234567890 -compact
.It Pa /dev/pci
Character device for the
.Nm pci
driver.
.El
.Sh DIAGNOSTICS
None.
.Sh SEE ALSO
.Xr pciconf 8
.Sh HISTORY
The
.Nm pci
driver (not the kernel's
.Tn PCI
support code) first appeared in
.Fx 2.2 ,
and was written by Stefan Esser and Garrett Wollman.
Support for device listing and matching was re-implemented by
Kenneth Merry, and first appeared in
.Fx 3.0 .
.Sh AUTHORS
.An Kenneth Merry Aq ken@FreeBSD.ORG
.Sh BUGS
It isn't possible for users to specify an accurate offset into the device
list without calling the
.Dv PCIOCGETCONF
at least once, since they have no way of knowing the current generation
number otherwise. This probably isn't a serious problem, though, since
users can easily narrow their search by specifying a pattern or patterns
for the kernel to match against.

1
sys/alpha/alpha/dec_2100_a50.c
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@ -45,7 +45,6 @@
#include <machine/clock.h>
#include <pci/pcireg.h>
#include <pci/pcivar.h>
#include <pci/pci_ioctl.h>
#include <alpha/pci/apecsreg.h>
#include <alpha/pci/apecsvar.h>

1
sys/alpha/alpha/dec_axppci_33.c
View File

@ -42,7 +42,6 @@
#include <machine/clock.h>
#include <pci/pcireg.h>
#include <pci/pcivar.h>
#include <pci/pci_ioctl.h>
#include <alpha/pci/lcavar.h>
#include "sio.h"

1
sys/alpha/alpha/dec_eb64plus.c
View File

@ -60,7 +60,6 @@
#include <pci/pcireg.h>
#include <pci/pcivar.h>
#include <pci/pci_ioctl.h>
#include <alpha/pci/apecsreg.h>
#include <alpha/pci/apecsvar.h>

1
sys/alpha/alpha/dec_kn20aa.c
View File

@ -42,7 +42,6 @@
#include <machine/clock.h>
#include <pci/pcireg.h>
#include <pci/pcivar.h>
#include <pci/pci_ioctl.h>
#include <alpha/pci/ciareg.h>
#include <alpha/pci/ciavar.h>

1
sys/alpha/alpha/dec_st550.c
View File

@ -48,7 +48,6 @@
#include <machine/clock.h>
#include <pci/pcireg.h>
#include <pci/pcivar.h>
#include <pci/pci_ioctl.h>
#include <alpha/pci/ciareg.h>
#include <alpha/pci/ciavar.h>

1
sys/alpha/alpha/dec_st6600.c
View File

@ -41,7 +41,6 @@
#include <machine/clock.h>
#include <pci/pcireg.h>
#include <pci/pcivar.h>
#include <pci/pci_ioctl.h>
#include <alpha/pci/tsunamireg.h>
#include <alpha/pci/tsunamivar.h>

2
sys/dev/pci/pci.c
View File

@ -54,7 +54,7 @@
#include <pci/pcireg.h>
#include <pci/pcivar.h>
#include <pci/pci_ioctl.h>
#include <sys/pciio.h>
#ifdef APIC_IO
#include <machine/smp.h>

1
sys/dev/pci/pcivar.h
View File

@ -34,7 +34,6 @@
#define PCI_COMPAT
#endif
#include <pci/pci_ioctl.h> /* XXX KDM */
#include <sys/queue.h>
/* some PCI bus constants */

2
sys/pci/pci.c
View File

@ -54,7 +54,7 @@
#include <pci/pcireg.h>
#include <pci/pcivar.h>
#include <pci/pci_ioctl.h>
#include <sys/pciio.h>
#ifdef APIC_IO
#include <machine/smp.h>

128
sys/pci/pci_ioctl.h
View File

@ -1,128 +0,0 @@
#ifndef _PCI_IOCTL_H
#define _PCI_IOCTL_H 1
#include <sys/ioccom.h>
#define PCI_MAXNAMELEN 16 /* max no. of characters in a device name */
typedef enum {
PCI_GETCONF_LAST_DEVICE,
PCI_GETCONF_LIST_CHANGED,
PCI_GETCONF_MORE_DEVS,
PCI_GETCONF_ERROR
} pci_getconf_status;
typedef enum {
PCI_GETCONF_NO_MATCH = 0x00,
PCI_GETCONF_MATCH_BUS = 0x01,
PCI_GETCONF_MATCH_DEV = 0x02,
PCI_GETCONF_MATCH_FUNC = 0x04,
PCI_GETCONF_MATCH_NAME = 0x08,
PCI_GETCONF_MATCH_UNIT = 0x10,
PCI_GETCONF_MATCH_VENDOR = 0x20,
PCI_GETCONF_MATCH_DEVICE = 0x40,
PCI_GETCONF_MATCH_CLASS = 0x80
} pci_getconf_flags;
struct pcisel {
u_int8_t pc_bus; /* bus number */
u_int8_t pc_dev; /* device on this bus */
u_int8_t pc_func; /* function on this device */
};
struct pci_conf {
struct pcisel pc_sel; /* bus+slot+function */
u_int8_t pc_hdr; /* PCI header type */
u_int16_t pc_subvendor; /* card vendor ID */
u_int16_t pc_subdevice; /* card device ID, assigned by
card vendor */
u_int16_t pc_vendor; /* chip vendor ID */
u_int16_t pc_device; /* chip device ID, assigned by
chip vendor */
u_int8_t pc_class; /* chip PCI class */
u_int8_t pc_subclass; /* chip PCI subclass */
u_int8_t pc_progif; /* chip PCI programming interface */
u_int8_t pc_revid; /* chip revision ID */
char pd_name[PCI_MAXNAMELEN + 1]; /* Name of peripheral
device */
u_long pd_unit; /* Unit number */
};
struct pci_match_conf {
struct pcisel pc_sel; /* bus+slot+function */
char pd_name[PCI_MAXNAMELEN + 1]; /* Name of peripheral
device */
u_long pd_unit; /* Unit number */
u_int16_t pc_vendor; /* PCI Vendor ID */
u_int16_t pc_device; /* PCI Device ID */
u_int8_t pc_class; /* PCI class */
pci_getconf_flags flags; /* Matching expression */
};
struct pci_conf_io {
u_int32_t pat_buf_len; /*
* Length of buffer passed in from
* user space.
*/
u_int32_t num_patterns; /*
* Number of pci_match_conf structures
* passed in by the user.
*/
struct pci_match_conf *patterns; /*
* Patterns passed in by the user.
*/
u_int32_t match_buf_len;/*
* Length of match buffer passed
* in by the user.
*/
u_int32_t num_matches; /*
* Number of matches returned by
* the kernel.
*/
struct pci_conf *matches; /*
* PCI device matches returned by
* the kernel.
*/
u_int32_t offset; /*
* Passed in by the user code to
* indicate where the kernel should
* start traversing the device list.
* The value passed out by the kernel
* points to the record immediately
* after the last one returned.
* i.e. this value may be passed back
* unchanged by the user for a
* subsequent call.
*/
u_int32_t generation; /*
* PCI configuration generation.
* This only needs to be set if the
* offset is set. The kernel will
* compare its current generation
* number to the generation passed
* in by the user to determine
* whether the PCI device list has
* changed since the user last
* called the GETCONF ioctl.
*/
pci_getconf_status status; /*
* Status passed back from the
* kernel.
*/
};
struct pci_io {
struct pcisel pi_sel; /* device to operate on */
int pi_reg; /* configuration register to examine */
int pi_width; /* width (in bytes) of read or write */
u_int32_t pi_data; /* data to write or result of read */
};
#define PCIOCGETCONF _IOWR('p', 1, struct pci_conf_io)
#define PCIOCREAD _IOWR('p', 2, struct pci_io)
#define PCIOCWRITE _IOWR('p', 3, struct pci_io)
#define PCIOCATTACHED _IOWR('p', 4, struct pci_io)
#endif /* _PCI_IOCTL_H */

1
sys/pci/pcivar.h
View File

@ -34,7 +34,6 @@
#define PCI_COMPAT
#endif
#include <pci/pci_ioctl.h> /* XXX KDM */
#include <sys/queue.h>
/* some PCI bus constants */

177
sys/sys/pciio.h
View File

@ -1,122 +1,109 @@
#ifndef _PCI_IOCTL_H
#define _PCI_IOCTL_H 1
/*-
* Copyright (c) 1997, Stefan Esser <se@FreeBSD.ORG>
* Copyright (c) 1997, 1998, 1999, Kenneth D. Merry <ken@FreeBSD.ORG>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice unmodified, this list of conditions, and the following
* disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*
*/
#ifndef _SYS_PCIIO_H_
#define _SYS_PCIIO_H_
#include <sys/ioccom.h>
#define PCI_MAXNAMELEN 16 /* max no. of characters in a device name */
#define PCI_MAXNAMELEN 16
typedef enum {
PCI_GETCONF_LAST_DEVICE,
PCI_GETCONF_LIST_CHANGED,
PCI_GETCONF_MORE_DEVS,
PCI_GETCONF_ERROR
PCI_GETCONF_LAST_DEVICE,
PCI_GETCONF_LIST_CHANGED,
PCI_GETCONF_MORE_DEVS,
PCI_GETCONF_ERROR
} pci_getconf_status;
typedef enum {
PCI_GETCONF_NO_MATCH = 0x00,
PCI_GETCONF_MATCH_BUS = 0x01,
PCI_GETCONF_MATCH_DEV = 0x02,
PCI_GETCONF_MATCH_FUNC = 0x04,
PCI_GETCONF_MATCH_NAME = 0x08,
PCI_GETCONF_MATCH_UNIT = 0x10,
PCI_GETCONF_MATCH_VENDOR = 0x20,
PCI_GETCONF_MATCH_DEVICE = 0x40,
PCI_GETCONF_MATCH_CLASS = 0x80
PCI_GETCONF_NO_MATCH = 0x00,
PCI_GETCONF_MATCH_BUS = 0x01,
PCI_GETCONF_MATCH_DEV = 0x02,
PCI_GETCONF_MATCH_FUNC = 0x04,
PCI_GETCONF_MATCH_NAME = 0x08,
PCI_GETCONF_MATCH_UNIT = 0x10,
PCI_GETCONF_MATCH_VENDOR = 0x20,
PCI_GETCONF_MATCH_DEVICE = 0x40,
PCI_GETCONF_MATCH_CLASS = 0x80
} pci_getconf_flags;
struct pcisel {
u_int8_t pc_bus; /* bus number */
u_int8_t pc_dev; /* device on this bus */
u_int8_t pc_func; /* function on this device */
u_int8_t pc_bus; /* bus number */
u_int8_t pc_dev; /* device on this bus */
u_int8_t pc_func; /* function on this device */
};
struct pci_conf {
struct pcisel pc_sel; /* bus+slot+function */
u_int8_t pc_hdr; /* PCI header type */
u_int16_t pc_subvendor; /* card vendor ID */
u_int16_t pc_subdevice; /* card device ID, assigned by
struct pcisel pc_sel; /* bus+slot+function */
u_int8_t pc_hdr; /* PCI header type */
u_int16_t pc_subvendor; /* card vendor ID */
u_int16_t pc_subdevice; /* card device ID, assigned by
card vendor */
u_int16_t pc_vendor; /* chip vendor ID */
u_int16_t pc_device; /* chip device ID, assigned by
u_int16_t pc_vendor; /* chip vendor ID */
u_int16_t pc_device; /* chip device ID, assigned by
chip vendor */
u_int8_t pc_class; /* chip PCI class */
u_int8_t pc_subclass; /* chip PCI subclass */
u_int8_t pc_progif; /* chip PCI programming interface */
u_int8_t pc_revid; /* chip revision ID */
char pd_name[PCI_MAXNAMELEN + 1]; /* Name of peripheral
device */
u_long pd_unit; /* Unit number */
u_int8_t pc_class; /* chip PCI class */
u_int8_t pc_subclass; /* chip PCI subclass */
u_int8_t pc_progif; /* chip PCI programming interface */
u_int8_t pc_revid; /* chip revision ID */
char pd_name[PCI_MAXNAMELEN + 1]; /* device name */
u_long pd_unit; /* device unit number */
};
struct pci_match_conf {
struct pcisel pc_sel; /* bus+slot+function */
char pd_name[PCI_MAXNAMELEN + 1]; /* Name of peripheral
device */
u_long pd_unit; /* Unit number */
u_int16_t pc_vendor; /* PCI Vendor ID */
u_int16_t pc_device; /* PCI Device ID */
u_int8_t pc_class; /* PCI class */
pci_getconf_flags flags; /* Matching expression */
struct pcisel pc_sel; /* bus+slot+function */
char pd_name[PCI_MAXNAMELEN + 1]; /* device name */
u_long pd_unit; /* Unit number */
u_int16_t pc_vendor; /* PCI Vendor ID */
u_int16_t pc_device; /* PCI Device ID */
u_int8_t pc_class; /* PCI class */
pci_getconf_flags flags; /* Matching expression */
};
struct pci_conf_io {
u_int32_t pat_buf_len; /*
* Length of buffer passed in from
* user space.
*/
u_int32_t num_patterns; /*
* Number of pci_match_conf structures
* passed in by the user.
*/
struct pci_match_conf *patterns; /*
* Patterns passed in by the user.
*/
u_int32_t match_buf_len;/*
* Length of match buffer passed
* in by the user.
*/
u_int32_t num_matches; /*
* Number of matches returned by
* the kernel.
*/
struct pci_conf *matches; /*
* PCI device matches returned by
* the kernel.
*/
u_int32_t offset; /*
* Passed in by the user code to
* indicate where the kernel should
* start traversing the device list.
* The value passed out by the kernel
* points to the record immediately
* after the last one returned.
* i.e. this value may be passed back
* unchanged by the user for a
* subsequent call.
*/
u_int32_t generation; /*
* PCI configuration generation.
* This only needs to be set if the
* offset is set. The kernel will
* compare its current generation
* number to the generation passed
* in by the user to determine
* whether the PCI device list has
* changed since the user last
* called the GETCONF ioctl.
*/
pci_getconf_status status; /*
* Status passed back from the
* kernel.
*/
u_int32_t pat_buf_len; /* pattern buffer length */
u_int32_t num_patterns; /* number of patterns */
struct pci_match_conf *patterns; /* pattern buffer */
u_int32_t match_buf_len; /* match buffer length */
u_int32_t num_matches; /* number of matches returned */
struct pci_conf *matches; /* match buffer */
u_int32_t offset; /* offset into device list */
u_int32_t generation; /* device list generation */
pci_getconf_status status; /* request status */
};
struct pci_io {
struct pcisel pi_sel; /* device to operate on */
int pi_reg; /* configuration register to examine */
int pi_width; /* width (in bytes) of read or write */
u_int32_t pi_data; /* data to write or result of read */
struct pcisel pi_sel; /* device to operate on */
int pi_reg; /* configuration register to examine */
int pi_width; /* width (in bytes) of read or write */
u_int32_t pi_data; /* data to write or result of read */
};
@ -125,4 +112,4 @@ struct pci_io {
#define PCIOCWRITE _IOWR('p', 3, struct pci_io)
#define PCIOCATTACHED _IOWR('p', 4, struct pci_io)
#endif /* _PCI_IOCTL_H */
#endif /* !_SYS_PCIIO_H_ */

4
usr.sbin/pciconf/pciconf.c
View File

@ -40,9 +40,7 @@ static const char rcsid[] =
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <pci/pcivar.h>
#include <pci/pci_ioctl.h>
#include <sys/pciio.h>
#include "pathnames.h"