260 lines
6.2 KiB
C
260 lines
6.2 KiB
C
/*-
|
|
* Copyright (c) 2000 Doug Rabson
|
|
* 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. 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 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#include "opt_bus.h"
|
|
#include "opt_pci.h"
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/bus.h>
|
|
#include <sys/lock.h>
|
|
#include <sys/lockmgr.h>
|
|
#include <sys/mutex.h>
|
|
#include <sys/proc.h>
|
|
|
|
#include <pci/pcivar.h>
|
|
#include <pci/pcireg.h>
|
|
#include <pci/agppriv.h>
|
|
#include <pci/agpreg.h>
|
|
|
|
#include <vm/vm.h>
|
|
#include <vm/vm_object.h>
|
|
#include <vm/pmap.h>
|
|
|
|
struct agp_sis_softc {
|
|
struct agp_softc agp;
|
|
u_int32_t initial_aperture; /* aperture size at startup */
|
|
struct agp_gatt *gatt;
|
|
};
|
|
|
|
static const char*
|
|
agp_sis_match(device_t dev)
|
|
{
|
|
if (pci_get_class(dev) != PCIC_BRIDGE
|
|
|| pci_get_subclass(dev) != PCIS_BRIDGE_HOST)
|
|
return NULL;
|
|
|
|
if (agp_find_caps(dev) == 0)
|
|
return NULL;
|
|
|
|
switch (pci_get_devid(dev)) {
|
|
case 0x00011039:
|
|
return ("SiS 5591 host to AGP bridge");
|
|
};
|
|
|
|
if (pci_get_vendor(dev) == 0x1039)
|
|
return ("SIS Generic host to PCI bridge");
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static int
|
|
agp_sis_probe(device_t dev)
|
|
{
|
|
const char *desc;
|
|
|
|
desc = agp_sis_match(dev);
|
|
if (desc) {
|
|
device_verbose(dev);
|
|
device_set_desc(dev, desc);
|
|
return 0;
|
|
}
|
|
|
|
return ENXIO;
|
|
}
|
|
|
|
static int
|
|
agp_sis_attach(device_t dev)
|
|
{
|
|
struct agp_sis_softc *sc = device_get_softc(dev);
|
|
struct agp_gatt *gatt;
|
|
int error;
|
|
|
|
error = agp_generic_attach(dev);
|
|
if (error)
|
|
return error;
|
|
|
|
sc->initial_aperture = AGP_GET_APERTURE(dev);
|
|
|
|
for (;;) {
|
|
gatt = agp_alloc_gatt(dev);
|
|
if (gatt)
|
|
break;
|
|
|
|
/*
|
|
* Probably contigmalloc failure. Try reducing the
|
|
* aperture so that the gatt size reduces.
|
|
*/
|
|
if (AGP_SET_APERTURE(dev, AGP_GET_APERTURE(dev) / 2)) {
|
|
agp_generic_detach(dev);
|
|
return ENOMEM;
|
|
}
|
|
}
|
|
sc->gatt = gatt;
|
|
|
|
/* Install the gatt. */
|
|
pci_write_config(dev, AGP_SIS_ATTBASE, gatt->ag_physical, 4);
|
|
|
|
/* Enable the aperture. */
|
|
pci_write_config(dev, AGP_SIS_WINCTRL,
|
|
pci_read_config(dev, AGP_SIS_WINCTRL, 1) | 3, 1);
|
|
|
|
/*
|
|
* Enable the TLB and make it automatically invalidate entries
|
|
* when the GATT is written.
|
|
*/
|
|
pci_write_config(dev, AGP_SIS_TLBCTRL, 0x05, 1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
agp_sis_detach(device_t dev)
|
|
{
|
|
struct agp_sis_softc *sc = device_get_softc(dev);
|
|
int error;
|
|
|
|
error = agp_generic_detach(dev);
|
|
if (error)
|
|
return error;
|
|
|
|
/* Disable the aperture.. */
|
|
pci_write_config(dev, AGP_SIS_WINCTRL,
|
|
pci_read_config(dev, AGP_SIS_WINCTRL, 1) & ~3, 1);
|
|
|
|
/* and the TLB. */
|
|
pci_write_config(dev, AGP_SIS_TLBCTRL, 0, 1);
|
|
|
|
/* Put the aperture back the way it started. */
|
|
AGP_SET_APERTURE(dev, sc->initial_aperture);
|
|
|
|
agp_free_gatt(sc->gatt);
|
|
return 0;
|
|
}
|
|
|
|
static u_int32_t
|
|
agp_sis_get_aperture(device_t dev)
|
|
{
|
|
int gws;
|
|
|
|
/*
|
|
* The aperture size is equal to 4M<<gws.
|
|
*/
|
|
gws = (pci_read_config(dev, AGP_SIS_WINCTRL, 1) & 0x70) >> 4;
|
|
return (4*1024*1024) << gws;
|
|
}
|
|
|
|
static int
|
|
agp_sis_set_aperture(device_t dev, u_int32_t aperture)
|
|
{
|
|
int gws;
|
|
|
|
/*
|
|
* Check for a power of two and make sure its within the
|
|
* programmable range.
|
|
*/
|
|
if (aperture & (aperture - 1)
|
|
|| aperture < 4*1024*1024
|
|
|| aperture > 256*1024*1024)
|
|
return EINVAL;
|
|
|
|
gws = ffs(aperture / 4*1024*1024) - 1;
|
|
|
|
pci_write_config(dev, AGP_SIS_WINCTRL,
|
|
((pci_read_config(dev, AGP_SIS_WINCTRL, 1) & ~0x70)
|
|
| gws << 4), 1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
agp_sis_bind_page(device_t dev, int offset, vm_offset_t physical)
|
|
{
|
|
struct agp_sis_softc *sc = device_get_softc(dev);
|
|
|
|
if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT))
|
|
return EINVAL;
|
|
|
|
sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = physical;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
agp_sis_unbind_page(device_t dev, int offset)
|
|
{
|
|
struct agp_sis_softc *sc = device_get_softc(dev);
|
|
|
|
if (offset < 0 || offset >= (sc->gatt->ag_entries << AGP_PAGE_SHIFT))
|
|
return EINVAL;
|
|
|
|
sc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = 0;
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
agp_sis_flush_tlb(device_t dev)
|
|
{
|
|
pci_write_config(dev, AGP_SIS_TLBFLUSH, 0x02, 1);
|
|
}
|
|
|
|
static device_method_t agp_sis_methods[] = {
|
|
/* Device interface */
|
|
DEVMETHOD(device_probe, agp_sis_probe),
|
|
DEVMETHOD(device_attach, agp_sis_attach),
|
|
DEVMETHOD(device_detach, agp_sis_detach),
|
|
DEVMETHOD(device_shutdown, bus_generic_shutdown),
|
|
DEVMETHOD(device_suspend, bus_generic_suspend),
|
|
DEVMETHOD(device_resume, bus_generic_resume),
|
|
|
|
/* AGP interface */
|
|
DEVMETHOD(agp_get_aperture, agp_sis_get_aperture),
|
|
DEVMETHOD(agp_set_aperture, agp_sis_set_aperture),
|
|
DEVMETHOD(agp_bind_page, agp_sis_bind_page),
|
|
DEVMETHOD(agp_unbind_page, agp_sis_unbind_page),
|
|
DEVMETHOD(agp_flush_tlb, agp_sis_flush_tlb),
|
|
DEVMETHOD(agp_enable, agp_generic_enable),
|
|
DEVMETHOD(agp_alloc_memory, agp_generic_alloc_memory),
|
|
DEVMETHOD(agp_free_memory, agp_generic_free_memory),
|
|
DEVMETHOD(agp_bind_memory, agp_generic_bind_memory),
|
|
DEVMETHOD(agp_unbind_memory, agp_generic_unbind_memory),
|
|
|
|
{ 0, 0 }
|
|
};
|
|
|
|
static driver_t agp_sis_driver = {
|
|
"agp",
|
|
agp_sis_methods,
|
|
sizeof(struct agp_sis_softc),
|
|
};
|
|
|
|
static devclass_t agp_devclass;
|
|
|
|
DRIVER_MODULE(agp_sis, pci, agp_sis_driver, agp_devclass, 0, 0);
|