169 lines
4.5 KiB
C
169 lines
4.5 KiB
C
/* $NetBSD: pci_usrreq.c,v 1.8 2003/06/29 22:30:27 fvdl Exp $ */
|
|
|
|
/*
|
|
* Copyright 2001 Wasabi Systems, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* Written by Jason R. Thorpe for Wasabi Systems, Inc.
|
|
*
|
|
* 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. 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.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed for the NetBSD Project by
|
|
* Wasabi Systems, Inc.
|
|
* 4. The name of Wasabi Systems, Inc. may not be used to endorse
|
|
* or promote products derived from this software without specific prior
|
|
* written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC
|
|
* 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.
|
|
*/
|
|
|
|
/*
|
|
* User -> kernel interface for PCI bus access.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: pci_usrreq.c,v 1.8 2003/06/29 22:30:27 fvdl Exp $");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/conf.h>
|
|
#include <sys/device.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/errno.h>
|
|
#include <sys/fcntl.h>
|
|
|
|
#include <dev/pci/pcireg.h>
|
|
#include <dev/pci/pcivar.h>
|
|
#include <dev/pci/pciio.h>
|
|
|
|
dev_type_open(pciopen);
|
|
dev_type_ioctl(pciioctl);
|
|
dev_type_mmap(pcimmap);
|
|
|
|
const struct cdevsw pci_cdevsw = {
|
|
pciopen, nullclose, noread, nowrite, pciioctl,
|
|
nostop, notty, nopoll, pcimmap, nokqfilter,
|
|
};
|
|
|
|
int
|
|
pciopen(dev_t dev, int flags, int mode, struct proc *p)
|
|
{
|
|
struct pci_softc *sc;
|
|
int unit;
|
|
|
|
unit = minor(dev);
|
|
sc = device_lookup(&pci_cd, unit);
|
|
if (sc == NULL)
|
|
return (ENXIO);
|
|
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
pciioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p)
|
|
{
|
|
struct pci_softc *sc = device_lookup(&pci_cd, minor(dev));
|
|
struct pciio_bdf_cfgreg *bdfr = (void *) data;
|
|
struct pciio_businfo *binfo = (void *) data;
|
|
pcitag_t tag;
|
|
|
|
switch (cmd) {
|
|
case PCI_IOC_BDF_CFGREAD:
|
|
case PCI_IOC_BDF_CFGWRITE:
|
|
if (bdfr->bus > 255 || bdfr->device >= sc->sc_maxndevs ||
|
|
bdfr->function > 7)
|
|
return (EINVAL);
|
|
tag = pci_make_tag(sc->sc_pc, bdfr->bus, bdfr->device,
|
|
bdfr->function);
|
|
if (cmd == PCI_IOC_BDF_CFGREAD)
|
|
bdfr->cfgreg.val = pci_conf_read(sc->sc_pc, tag,
|
|
bdfr->cfgreg.reg);
|
|
else {
|
|
if ((flag & FWRITE) == 0)
|
|
return (EBADF);
|
|
pci_conf_write(sc->sc_pc, tag, bdfr->cfgreg.reg,
|
|
bdfr->cfgreg.val);
|
|
}
|
|
break;
|
|
|
|
case PCI_IOC_BUSINFO:
|
|
binfo->busno = sc->sc_bus;
|
|
binfo->maxdevs = sc->sc_maxndevs;
|
|
break;
|
|
|
|
default:
|
|
return (ENOTTY);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
paddr_t
|
|
pcimmap(dev_t dev, off_t offset, int prot)
|
|
{
|
|
#if 0
|
|
struct pci_softc *sc = device_lookup(&pci_cd, minor(dev));
|
|
|
|
/*
|
|
* Since we allow mapping of the entire bus, we
|
|
* take the offset to be the address on the bus,
|
|
* and pass 0 as the offset into that range.
|
|
*
|
|
* XXX Need a way to deal with linear/prefetchable/etc.
|
|
*/
|
|
return (bus_space_mmap(sc->sc_memt, offset, 0, prot, 0));
|
|
#else
|
|
/* XXX Consider this further. */
|
|
return (-1);
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* pci_devioctl:
|
|
*
|
|
* PCI ioctls that can be performed on devices directly.
|
|
*/
|
|
int
|
|
pci_devioctl(pci_chipset_tag_t pc, pcitag_t tag, u_long cmd, caddr_t data,
|
|
int flag, struct proc *p)
|
|
{
|
|
struct pciio_cfgreg *r = (void *) data;
|
|
|
|
switch (cmd) {
|
|
case PCI_IOC_CFGREAD:
|
|
case PCI_IOC_CFGWRITE:
|
|
if (cmd == PCI_IOC_CFGREAD)
|
|
r->val = pci_conf_read(pc, tag, r->reg);
|
|
else {
|
|
if ((flag & FWRITE) == 0)
|
|
return (EBADF);
|
|
pci_conf_write(pc, tag, r->reg, r->val);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
return (EPASSTHROUGH);
|
|
}
|
|
|
|
return (0);
|
|
}
|