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/* $OpenBSD: vga_pci.c,v 1.24 2006/07/20 20:54:51 kettenis Exp $ */
/* $NetBSD: vga_pci.c,v 1.3 1998/06/08 06:55:58 thorpej Exp $ */
/*
* Copyright (c) 2001 Wasabi Systems, Inc.
* All rights reserved.
*
* Written by Frank van der Linden 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.
*/
/*
* Copyright (c) 1995, 1996 Carnegie-Mellon University.
* All rights reserved.
*
* Author: Chris G. Demetriou
*
* Permission to use, copy, modify and distribute this software and
* its documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/
#include "vga.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <sys/agpio.h>
#include <uvm/uvm.h>
#include <machine/bus.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcidevs.h>
#include <dev/ic/mc6845reg.h>
#include <dev/ic/pcdisplayvar.h>
#include <dev/ic/vgareg.h>
#include <dev/ic/vgavar.h>
#include <dev/pci/vga_pcivar.h>
#include <dev/wscons/wsconsio.h>
#include <dev/wscons/wsdisplayvar.h>
int vga_pci_match(struct device *, void *, void *);
void vga_pci_attach(struct device *, struct device *, void *);
paddr_t vga_pci_mmap(void* v, off_t off, int prot);
struct cfattach vga_pci_ca = {
sizeof(struct vga_pci_softc), vga_pci_match, vga_pci_attach,
};
int
vga_pci_match(struct device *parent, void *match, void *aux)
{
struct pci_attach_args *pa = aux;
int potential;
potential = 0;
/*
* If it's prehistoric/vga or display/vga, we might match.
* For the console device, this is jut a sanity check.
*/
if (PCI_CLASS(pa->pa_class) == PCI_CLASS_PREHISTORIC &&
PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_PREHISTORIC_VGA)
potential = 1;
if (PCI_CLASS(pa->pa_class) == PCI_CLASS_DISPLAY &&
PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_DISPLAY_VGA)
potential = 1;
if (!potential)
return (0);
/* check whether it is disabled by firmware */
if ((pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG)
& (PCI_COMMAND_IO_ENABLE | PCI_COMMAND_MEM_ENABLE))
!= (PCI_COMMAND_IO_ENABLE | PCI_COMMAND_MEM_ENABLE))
return (0);
/* If it's the console, we have a winner! */
if (vga_is_console(pa->pa_iot, WSDISPLAY_TYPE_PCIVGA))
return (1);
/*
* If we might match, make sure that the card actually looks OK.
*/
if (!vga_common_probe(pa->pa_iot, pa->pa_memt))
return (0);
return (1);
}
void
vga_pci_attach(struct device *parent, struct device *self, void *aux)
{
struct pci_attach_args *pa = aux;
pcireg_t reg;
/*
* Enable bus master; X might need this for accelerated graphics.
*/
reg = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
reg |= PCI_COMMAND_MASTER_ENABLE;
pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, reg);
#ifdef PCIAGP
agp_attach(parent, self, aux);
#endif
printf("\n");
vga_common_attach(self, pa->pa_iot, pa->pa_memt,
WSDISPLAY_TYPE_PCIVGA);
}
paddr_t
vga_pci_mmap(void *v, off_t off, int prot)
{
#ifdef PCIAGP
return agp_mmap(v, off, prot);
#else
return -1;
#endif
}
int
vga_pci_cnattach(bus_space_tag_t iot, bus_space_tag_t memt,
pci_chipset_tag_t pc, int bus, int device, int function)
{
return (vga_cnattach(iot, memt, WSDISPLAY_TYPE_PCIVGA, 0));
}
int
vga_pci_ioctl(void *v, u_long cmd, caddr_t addr, int flag, struct proc *pb)
{
int error = 0;
switch (cmd) {
#ifdef PCIAGP
case AGPIOC_INFO:
case AGPIOC_ACQUIRE:
case AGPIOC_RELEASE:
case AGPIOC_SETUP:
case AGPIOC_ALLOCATE:
case AGPIOC_DEALLOCATE:
case AGPIOC_BIND:
case AGPIOC_UNBIND:
error = agp_ioctl(v, cmd, addr, flag, pb);
break;
#endif
default:
error = ENOTTY;
}
return (error);
}
#ifdef notyet
void
vga_pci_close(void *v)
{
#ifdef PCIAGP
agp_close(v);
#endif
}
#endif
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