| Current Path : /sys/amd64/compile/hs32/modules/usr/src/sys/modules/nvram/@/dev/agp/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
| Current File : //sys/amd64/compile/hs32/modules/usr/src/sys/modules/nvram/@/dev/agp/agp_sis.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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/sys/dev/agp/agp_sis.c 194017 2009-06-11 17:06:07Z avg $");
#include "opt_bus.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/proc.h>
#include <dev/agp/agppriv.h>
#include <dev/agp/agpreg.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.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");
case 0x05301039:
return ("SiS 530 host to AGP bridge");
case 0x05401039:
return ("SiS 540 host to AGP bridge");
case 0x05501039:
return ("SiS 550 host to AGP bridge");
case 0x06201039:
return ("SiS 620 host to AGP bridge");
case 0x06301039:
return ("SiS 630 host to AGP bridge");
case 0x06451039:
return ("SiS 645 host to AGP bridge");
case 0x06461039:
return ("SiS 645DX host to AGP bridge");
case 0x06481039:
return ("SiS 648 host to AGP bridge");
case 0x06501039:
return ("SiS 650 host to AGP bridge");
case 0x06511039:
return ("SiS 651 host to AGP bridge");
case 0x06551039:
return ("SiS 655 host to AGP bridge");
case 0x06611039:
return ("SiS 661 host to AGP bridge");
case 0x07301039:
return ("SiS 730 host to AGP bridge");
case 0x07351039:
return ("SiS 735 host to AGP bridge");
case 0x07401039:
return ("SiS 740 host to AGP bridge");
case 0x07411039:
return ("SiS 741 host to AGP bridge");
case 0x07451039:
return ("SiS 745 host to AGP bridge");
case 0x07461039:
return ("SiS 746 host to AGP bridge");
};
return NULL;
}
static int
agp_sis_probe(device_t dev)
{
const char *desc;
if (resource_disabled("agp", device_get_unit(dev)))
return (ENXIO);
desc = agp_sis_match(dev);
if (desc) {
device_set_desc(dev, desc);
return BUS_PROBE_DEFAULT;
}
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);
agp_free_cdev(dev);
/* 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);
agp_free_res(dev);
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, vm_offset_t offset, vm_offset_t physical)
{
struct agp_sis_softc *sc = device_get_softc(dev);
if (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, vm_offset_t offset)
{
struct agp_sis_softc *sc = device_get_softc(dev);
if (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, hostb, agp_sis_driver, agp_devclass, 0, 0);
MODULE_DEPEND(agp_sis, agp, 1, 1, 1);
MODULE_DEPEND(agp_sis, pci, 1, 1, 1);