270 lines
7.1 KiB
C
270 lines
7.1 KiB
C
/* $OpenBSD: agp_ali.c,v 1.18 2024/05/24 06:02:53 jsg Exp $ */
|
|
/* $NetBSD: agp_ali.c,v 1.2 2001/09/15 00:25:00 thorpej 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/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/device.h>
|
|
|
|
#include <dev/pci/pcivar.h>
|
|
#include <dev/pci/pcireg.h>
|
|
#include <dev/pci/pcidevs.h>
|
|
#include <dev/pci/agpvar.h>
|
|
#include <dev/pci/agpreg.h>
|
|
|
|
#include <machine/bus.h>
|
|
|
|
struct agp_ali_softc {
|
|
struct device dev;
|
|
struct agp_softc *agpdev;
|
|
struct agp_gatt *gatt;
|
|
pci_chipset_tag_t asc_pc;
|
|
pcitag_t asc_tag;
|
|
bus_addr_t asc_apaddr;
|
|
bus_size_t asc_apsize;
|
|
pcireg_t asc_attbase;
|
|
pcireg_t asc_tlbctrl;
|
|
};
|
|
|
|
void agp_ali_attach(struct device *, struct device *, void *);
|
|
int agp_ali_activate(struct device *, int);
|
|
void agp_ali_save(struct agp_ali_softc *);
|
|
void agp_ali_restore(struct agp_ali_softc *);
|
|
int agp_ali_probe(struct device *, void *, void *);
|
|
bus_size_t agp_ali_get_aperture(void *);
|
|
int agp_ali_set_aperture(void *sc, bus_size_t);
|
|
void agp_ali_bind_page(void *, bus_addr_t, paddr_t, int);
|
|
void agp_ali_unbind_page(void *, bus_addr_t);
|
|
void agp_ali_flush_tlb(void *);
|
|
|
|
const struct cfattach aliagp_ca = {
|
|
sizeof(struct agp_ali_softc), agp_ali_probe, agp_ali_attach,
|
|
NULL, agp_ali_activate
|
|
};
|
|
|
|
struct cfdriver aliagp_cd = {
|
|
NULL, "aliagp", DV_DULL
|
|
};
|
|
|
|
const struct agp_methods agp_ali_methods = {
|
|
agp_ali_bind_page,
|
|
agp_ali_unbind_page,
|
|
agp_ali_flush_tlb,
|
|
};
|
|
|
|
int
|
|
agp_ali_probe(struct device *parent, void *match, void *aux)
|
|
{
|
|
struct agp_attach_args *aa = aux;
|
|
struct pci_attach_args *pa = aa->aa_pa;
|
|
|
|
/* Must be a pchb, don't attach to iommu-style agp devs */
|
|
if (agpbus_probe(aa) == 1 && PCI_VENDOR(pa->pa_id) == PCI_VENDOR_ALI &&
|
|
PCI_PRODUCT(pa->pa_id) != PCI_PRODUCT_ALI_M1689)
|
|
return (1);
|
|
return (0);
|
|
}
|
|
|
|
void
|
|
agp_ali_attach(struct device *parent, struct device *self, void *aux)
|
|
{
|
|
struct agp_ali_softc *asc = (struct agp_ali_softc *)self;
|
|
struct agp_gatt *gatt;
|
|
struct agp_attach_args *aa = aux;
|
|
struct pci_attach_args *pa = aa->aa_pa;
|
|
pcireg_t reg;
|
|
|
|
asc->asc_tag = pa->pa_tag;
|
|
asc->asc_pc = pa->pa_pc;
|
|
asc->asc_apsize = agp_ali_get_aperture(asc);
|
|
|
|
if (pci_mapreg_info(pa->pa_pc, pa->pa_tag, AGP_APBASE,
|
|
PCI_MAPREG_TYPE_MEM, &asc->asc_apaddr, NULL, NULL) != 0) {
|
|
printf(": can't get aperture info\n");
|
|
return;
|
|
}
|
|
|
|
for (;;) {
|
|
gatt = agp_alloc_gatt(pa->pa_dmat, asc->asc_apsize);
|
|
if (gatt != NULL)
|
|
break;
|
|
/*
|
|
* almost certainly error allocating contiguous dma memory
|
|
* so reduce aperture so that the gatt size reduces.
|
|
*/
|
|
asc->asc_apsize /= 2;
|
|
if (agp_ali_set_aperture(asc, asc->asc_apsize)) {
|
|
printf("failed to set aperture\n");
|
|
return;
|
|
}
|
|
}
|
|
asc->gatt = gatt;
|
|
|
|
/* Install the gatt. */
|
|
reg = pci_conf_read(asc->asc_pc, asc->asc_tag, AGP_ALI_ATTBASE);
|
|
reg = (reg & 0xff) | gatt->ag_physical;
|
|
pci_conf_write(asc->asc_pc, asc->asc_tag, AGP_ALI_ATTBASE, reg);
|
|
|
|
/* Enable the TLB. */
|
|
reg = pci_conf_read(asc->asc_pc, asc->asc_tag, AGP_ALI_TLBCTRL);
|
|
reg = (reg & ~0xff) | 0x10;
|
|
pci_conf_write(asc->asc_pc, asc->asc_tag, AGP_ALI_TLBCTRL, reg);
|
|
|
|
asc->agpdev = (struct agp_softc *)agp_attach_bus(pa, &agp_ali_methods,
|
|
asc->asc_apaddr, asc->asc_apsize, &asc->dev);
|
|
return;
|
|
}
|
|
|
|
int
|
|
agp_ali_activate(struct device *arg, int act)
|
|
{
|
|
struct agp_ali_softc *asc = (struct agp_ali_softc *)arg;
|
|
|
|
switch (act) {
|
|
case DVACT_SUSPEND:
|
|
agp_ali_save(asc);
|
|
break;
|
|
case DVACT_RESUME:
|
|
agp_ali_restore(asc);
|
|
break;
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
void
|
|
agp_ali_save(struct agp_ali_softc *asc)
|
|
{
|
|
asc->asc_attbase = pci_conf_read(asc->asc_pc, asc->asc_tag,
|
|
AGP_ALI_ATTBASE);
|
|
asc->asc_tlbctrl = pci_conf_read(asc->asc_pc, asc->asc_tag,
|
|
AGP_ALI_TLBCTRL);
|
|
}
|
|
|
|
void
|
|
agp_ali_restore(struct agp_ali_softc *asc)
|
|
{
|
|
|
|
/* Install the gatt and aperture size. */
|
|
pci_conf_write(asc->asc_pc, asc->asc_tag, AGP_ALI_ATTBASE,
|
|
asc->asc_attbase);
|
|
|
|
/* Enable the TLB. */
|
|
pci_conf_write(asc->asc_pc, asc->asc_tag, AGP_ALI_TLBCTRL,
|
|
asc->asc_tlbctrl);
|
|
}
|
|
|
|
#define M 1024*1024
|
|
|
|
static const 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]))
|
|
|
|
bus_size_t
|
|
agp_ali_get_aperture(void *sc)
|
|
{
|
|
struct agp_ali_softc *asc = 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(asc->asc_pc, asc->asc_tag,
|
|
AGP_ALI_ATTBASE) & 0xff;
|
|
if (i >= agp_ali_table_size)
|
|
return (0);
|
|
return (agp_ali_table[i]);
|
|
}
|
|
|
|
int
|
|
agp_ali_set_aperture(void *sc, bus_size_t aperture)
|
|
{
|
|
struct agp_ali_softc *asc = sc;
|
|
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(asc->asc_pc, asc->asc_tag, AGP_ALI_ATTBASE);
|
|
reg &= ~0xff;
|
|
reg |= i;
|
|
pci_conf_write(asc->asc_pc, asc->asc_tag, AGP_ALI_ATTBASE, reg);
|
|
return (0);
|
|
}
|
|
|
|
void
|
|
agp_ali_bind_page(void *sc, bus_addr_t offset, paddr_t physical, int flags)
|
|
{
|
|
struct agp_ali_softc *asc = sc;
|
|
|
|
asc->gatt->ag_virtual[(offset - asc->asc_apaddr) >> AGP_PAGE_SHIFT] =
|
|
physical;
|
|
}
|
|
|
|
void
|
|
agp_ali_unbind_page(void *sc, bus_size_t offset)
|
|
{
|
|
struct agp_ali_softc *asc = sc;
|
|
|
|
asc->gatt->ag_virtual[(offset - asc->asc_apaddr) >> AGP_PAGE_SHIFT] = 0;
|
|
}
|
|
|
|
void
|
|
agp_ali_flush_tlb(void *sc)
|
|
{
|
|
struct agp_ali_softc *asc = sc;
|
|
pcireg_t reg;
|
|
|
|
reg = pci_conf_read(asc->asc_pc, asc->asc_tag, AGP_ALI_TLBCTRL);
|
|
reg &= ~0xff;
|
|
reg |= 0x90;
|
|
pci_conf_write(asc->asc_pc, asc->asc_tag, AGP_ALI_TLBCTRL, reg);
|
|
reg &= ~0xff;
|
|
reg |= 0x10;
|
|
pci_conf_write(asc->asc_pc, asc->asc_tag, AGP_ALI_TLBCTRL, reg);
|
|
}
|
|
|