254 lines
6.6 KiB
C
254 lines
6.6 KiB
C
/* $NetBSD: agp_ali.c,v 1.3 2001/11/13 07:48:40 lukem Exp $ */
|
|
|
|
/*-
|
|
* 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: src/sys/pci/agp_ali.c,v 1.3 2001/07/05 21:28:46 jhb Exp $
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: agp_ali.c,v 1.3 2001/11/13 07:48:40 lukem Exp $");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/conf.h>
|
|
#include <sys/device.h>
|
|
#include <sys/lock.h>
|
|
#include <sys/agpio.h>
|
|
|
|
#include <uvm/uvm_extern.h>
|
|
|
|
#include <dev/pci/pcivar.h>
|
|
#include <dev/pci/pcireg.h>
|
|
#include <dev/pci/agpvar.h>
|
|
#include <dev/pci/agpreg.h>
|
|
|
|
#include <machine/bus.h>
|
|
|
|
struct agp_ali_softc {
|
|
struct agp_softc agp;
|
|
u_int32_t initial_aperture; /* aperture size at startup */
|
|
struct agp_gatt *gatt;
|
|
};
|
|
|
|
static u_int32_t agp_ali_get_aperture(struct agp_softc *);
|
|
static int agp_ali_set_aperture(struct agp_softc *sc, u_int32_t);
|
|
static int agp_ali_bind_page(struct agp_softc *, off_t, bus_addr_t);
|
|
static int agp_ali_unbind_page(struct agp_softc *, off_t);
|
|
static void agp_ali_flush_tlb(struct agp_softc *);
|
|
|
|
|
|
struct agp_methods agp_ali_methods = {
|
|
agp_ali_get_aperture,
|
|
agp_ali_set_aperture,
|
|
agp_ali_bind_page,
|
|
agp_ali_unbind_page,
|
|
agp_ali_flush_tlb,
|
|
agp_generic_enable,
|
|
agp_generic_alloc_memory,
|
|
agp_generic_free_memory,
|
|
agp_generic_bind_memory,
|
|
agp_generic_unbind_memory,
|
|
};
|
|
|
|
int
|
|
agp_ali_attach(struct device *parent, struct device *self, void *aux)
|
|
{
|
|
struct agp_softc *sc = (struct agp_softc *)self;
|
|
struct agp_ali_softc *asc;
|
|
struct pci_attach_args *pa = aux;
|
|
struct agp_gatt *gatt;
|
|
pcireg_t reg;
|
|
|
|
asc = malloc(sizeof *asc, M_AGP, M_NOWAIT);
|
|
if (asc == NULL) {
|
|
printf(": failed to allocate softc\n");
|
|
return ENOMEM;
|
|
}
|
|
sc->as_chipc = asc;
|
|
sc->as_methods = &agp_ali_methods;
|
|
|
|
if (agp_map_aperture(pa, sc) != 0) {
|
|
printf(": failed to map aperture\n");
|
|
free(asc, M_AGP);
|
|
return ENXIO;
|
|
}
|
|
|
|
pci_get_capability(pa->pa_pc, pa->pa_tag, PCI_CAP_AGP, &sc->as_capoff,
|
|
NULL);
|
|
|
|
asc->initial_aperture = agp_ali_get_aperture(sc);
|
|
|
|
for (;;) {
|
|
gatt = agp_alloc_gatt(sc);
|
|
if (gatt != NULL)
|
|
break;
|
|
|
|
/*
|
|
* Probably contigmalloc failure. Try reducing the
|
|
* aperture so that the gatt size reduces.
|
|
*/
|
|
if (AGP_SET_APERTURE(sc, AGP_GET_APERTURE(sc) / 2)) {
|
|
agp_generic_detach(sc);
|
|
printf(": failed to set aperture\n");
|
|
return ENOMEM;
|
|
}
|
|
}
|
|
asc->gatt = gatt;
|
|
|
|
/* Install the gatt. */
|
|
reg = pci_conf_read(pa->pa_pc, pa->pa_tag, AGP_ALI_ATTBASE);
|
|
reg = (reg & 0xff) | gatt->ag_physical;
|
|
pci_conf_write(pa->pa_pc, pa->pa_tag, AGP_ALI_ATTBASE, reg);
|
|
|
|
/* Enable the TLB. */
|
|
reg = pci_conf_read(pa->pa_pc, pa->pa_tag, AGP_ALI_TLBCTRL);
|
|
reg = (reg & ~0xff) | 0x10;
|
|
pci_conf_write(pa->pa_pc, pa->pa_tag, AGP_ALI_TLBCTRL, reg);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#if 0
|
|
static int
|
|
agp_ali_detach(struct agp_softc *sc)
|
|
{
|
|
int error;
|
|
pcireg_t reg;
|
|
struct agp_ali_softc *asc = sc->as_chipc;
|
|
|
|
error = agp_generic_detach(sc);
|
|
if (error)
|
|
return error;
|
|
|
|
/* Disable the TLB.. */
|
|
reg = pci_conf_read(sc->as_pc, sc->as_tag, AGP_ALI_TLBCTRL);
|
|
reg &= ~0xff;
|
|
reg |= 0x90;
|
|
pci_conf_write(sc->as_pc, sc->as_tag, AGP_ALI_TLBCTRL, reg);
|
|
|
|
/* Put the aperture back the way it started. */
|
|
AGP_SET_APERTURE(sc, asc->initial_aperture);
|
|
reg = pci_conf_read(sc->as_pc, sc->as_tag, AGP_ALI_ATTBASE);
|
|
reg &= 0xff;
|
|
pci_conf_write(sc->as_pc, sc->as_tag, AGP_ALI_ATTBASE, reg);
|
|
|
|
agp_free_gatt(sc, asc->gatt);
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
#define M 1024*1024
|
|
|
|
static u_int32_t agp_ali_table[] = {
|
|
0, /* 0 - invalid */
|
|
1, /* 1 - invalid */
|
|
2, /* 2 - invalid */
|
|
4*M, /* 3 - invalid */
|
|
8*M, /* 4 - invalid */
|
|
0, /* 5 - invalid */
|
|
16*M, /* 6 - invalid */
|
|
32*M, /* 7 - invalid */
|
|
64*M, /* 8 - invalid */
|
|
128*M, /* 9 - invalid */
|
|
256*M, /* 10 - invalid */
|
|
};
|
|
#define agp_ali_table_size (sizeof(agp_ali_table) / sizeof(agp_ali_table[0]))
|
|
|
|
static u_int32_t
|
|
agp_ali_get_aperture(struct agp_softc *sc)
|
|
{
|
|
int i;
|
|
|
|
/*
|
|
* The aperture size is derived from the low bits of attbase.
|
|
* I'm not sure this is correct..
|
|
*/
|
|
i = (int)pci_conf_read(sc->as_pc, sc->as_tag, AGP_ALI_ATTBASE) & 0xff;
|
|
if (i >= agp_ali_table_size)
|
|
return 0;
|
|
return agp_ali_table[i];
|
|
}
|
|
|
|
static int
|
|
agp_ali_set_aperture(struct agp_softc *sc, u_int32_t aperture)
|
|
{
|
|
int i;
|
|
pcireg_t reg;
|
|
|
|
for (i = 0; i < agp_ali_table_size; i++)
|
|
if (agp_ali_table[i] == aperture)
|
|
break;
|
|
if (i == agp_ali_table_size)
|
|
return EINVAL;
|
|
|
|
reg = pci_conf_read(sc->as_pc, sc->as_tag, AGP_ALI_ATTBASE);
|
|
reg &= ~0xff;
|
|
reg |= i;
|
|
pci_conf_write(sc->as_pc, sc->as_tag, AGP_ALI_ATTBASE, reg);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
agp_ali_bind_page(struct agp_softc *sc, off_t offset, bus_addr_t physical)
|
|
{
|
|
struct agp_ali_softc *asc = sc->as_chipc;
|
|
|
|
if (offset < 0 || offset >= (asc->gatt->ag_entries << AGP_PAGE_SHIFT))
|
|
return EINVAL;
|
|
|
|
asc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = physical;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
agp_ali_unbind_page(struct agp_softc *sc, off_t offset)
|
|
{
|
|
struct agp_ali_softc *asc = sc->as_chipc;
|
|
|
|
if (offset < 0 || offset >= (asc->gatt->ag_entries << AGP_PAGE_SHIFT))
|
|
return EINVAL;
|
|
|
|
asc->gatt->ag_virtual[offset >> AGP_PAGE_SHIFT] = 0;
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
agp_ali_flush_tlb(struct agp_softc *sc)
|
|
{
|
|
pcireg_t reg;
|
|
|
|
reg = pci_conf_read(sc->as_pc, sc->as_tag, AGP_ALI_TLBCTRL);
|
|
reg &= ~0xff;
|
|
reg |= 0x90;
|
|
pci_conf_write(sc->as_pc, sc->as_tag, AGP_ALI_TLBCTRL, reg);
|
|
reg &= ~0xff;
|
|
reg |= 0x10;
|
|
pci_conf_write(sc->as_pc, sc->as_tag, AGP_ALI_TLBCTRL, reg);
|
|
}
|