freebsd-dev/sys/powerpc/powermac/uninorth.c
Peter Grehan d48bbef30d - probe the UniNorth chip in addition to the PCI bridges
- enable GEM ethernet cell if present
 - allow sparse address mapping for devices

Approved by: benno
2002-09-19 04:49:58 +00:00

572 lines
13 KiB
C

/*
* Copyright (C) 2002 Benno Rice.
* 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 Benno Rice ``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 TOOLS GMBH 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 <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/kernel.h>
#include <dev/ofw/openfirm.h>
#include <dev/ofw/ofw_pci.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#include <machine/bus.h>
#include <machine/md_var.h>
#include <machine/nexusvar.h>
#include <machine/resource.h>
#include <sys/rman.h>
#include <powerpc/ofw/ofw_pci.h>
#include <powerpc/powermac/uninorthvar.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include "pcib_if.h"
#define UNINORTH_DEBUG 0
/*
* Device interface.
*/
static int uninorth_probe(device_t);
static int uninorth_attach(device_t);
/*
* Bus interface.
*/
static int uninorth_read_ivar(device_t, device_t, int,
uintptr_t *);
static struct resource * uninorth_alloc_resource(device_t bus,
device_t child, int type, int *rid, u_long start,
u_long end, u_long count, u_int flags);
static int uninorth_activate_resource(device_t bus, device_t child,
int type, int rid, struct resource *res);
/*
* pcib interface.
*/
static int uninorth_maxslots(device_t);
static u_int32_t uninorth_read_config(device_t, u_int, u_int, u_int,
u_int, int);
static void uninorth_write_config(device_t, u_int, u_int, u_int,
u_int, u_int32_t, int);
static int uninorth_route_interrupt(device_t, device_t, int);
/*
* Local routines.
*/
static int uninorth_enable_config(struct uninorth_softc *, u_int,
u_int, u_int, u_int);
static void unin_enable_gmac(void);
/*
* Driver methods.
*/
static device_method_t uninorth_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, uninorth_probe),
DEVMETHOD(device_attach, uninorth_attach),
/* Bus interface */
DEVMETHOD(bus_print_child, bus_generic_print_child),
DEVMETHOD(bus_read_ivar, uninorth_read_ivar),
DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
DEVMETHOD(bus_alloc_resource, uninorth_alloc_resource),
DEVMETHOD(bus_activate_resource, uninorth_activate_resource),
/* pcib interface */
DEVMETHOD(pcib_maxslots, uninorth_maxslots),
DEVMETHOD(pcib_read_config, uninorth_read_config),
DEVMETHOD(pcib_write_config, uninorth_write_config),
DEVMETHOD(pcib_route_interrupt, uninorth_route_interrupt),
{ 0, 0 }
};
static driver_t uninorth_driver = {
"pcib",
uninorth_methods,
sizeof(struct uninorth_softc)
};
static devclass_t uninorth_devclass;
DRIVER_MODULE(uninorth, nexus, uninorth_driver, uninorth_devclass, 0, 0);
static int
uninorth_probe(device_t dev)
{
char *type, *compatible;
type = nexus_get_device_type(dev);
compatible = nexus_get_compatible(dev);
if (type == NULL || compatible == NULL)
return (ENXIO);
if (strcmp(type, "pci") != 0 || strcmp(compatible, "uni-north") != 0)
return (ENXIO);
device_set_desc(dev, "Apple UniNorth Host-PCI bridge");
return (0);
}
static int
uninorth_attach(device_t dev)
{
struct uninorth_softc *sc;
phandle_t node;
phandle_t child;
u_int32_t reg[2], busrange[2];
struct uninorth_range *rp, *io, *mem[2];
int nmem, i;
node = nexus_get_node(dev);
sc = device_get_softc(dev);
if (OF_getprop(node, "reg", reg, sizeof(reg)) < 8)
return (ENXIO);
if (OF_getprop(node, "bus-range", busrange, sizeof(busrange)) != 8)
return (ENXIO);
sc->sc_dev = dev;
sc->sc_node = node;
sc->sc_addr = (vm_offset_t)pmap_mapdev(reg[0] + 0x800000, PAGE_SIZE);
sc->sc_data = (vm_offset_t)pmap_mapdev(reg[0] + 0xc00000, PAGE_SIZE);
sc->sc_bus = busrange[0];
bzero(sc->sc_range, sizeof(sc->sc_range));
sc->sc_nrange = OF_getprop(node, "ranges", sc->sc_range,
sizeof(sc->sc_range));
if (sc->sc_nrange == -1) {
device_printf(dev, "could not get ranges\n");
return (ENXIO);
}
sc->sc_range[6].pci_hi = 0;
io = NULL;
nmem = 0;
for (rp = sc->sc_range; rp->pci_hi != 0; rp++) {
switch (rp->pci_hi & OFW_PCI_PHYS_HI_SPACEMASK) {
case OFW_PCI_PHYS_HI_SPACE_CONFIG:
break;
case OFW_PCI_PHYS_HI_SPACE_IO:
io = rp;
break;
case OFW_PCI_PHYS_HI_SPACE_MEM32:
mem[nmem] = rp;
nmem++;
break;
case OFW_PCI_PHYS_HI_SPACE_MEM64:
break;
}
}
if (io == NULL) {
device_printf(dev, "can't find io range\n");
return (ENXIO);
}
sc->sc_io_rman.rm_type = RMAN_ARRAY;
sc->sc_io_rman.rm_descr = "UniNorth PCI I/O Ports";
if (rman_init(&sc->sc_io_rman) != 0 ||
rman_manage_region(&sc->sc_io_rman, io->pci_lo,
io->pci_lo + io->size_lo) != 0) {
device_printf(dev, "failed to set up io range management\n");
return (ENXIO);
}
if (nmem == 0) {
device_printf(dev, "can't find mem ranges\n");
return (ENXIO);
}
sc->sc_mem_rman.rm_type = RMAN_ARRAY;
sc->sc_mem_rman.rm_descr = "UniNorth PCI Memory";
if (rman_init(&sc->sc_mem_rman) != 0) {
device_printf(dev,
"failed to init mem range resources\n");
return (ENXIO);
}
for (i = 0; i < nmem; i++) {
if (rman_manage_region(&sc->sc_mem_rman, mem[i]->pci_lo,
mem[i]->pci_lo + mem[i]->size_lo) != 0) {
device_printf(dev,
"failed to set up memory range management\n");
return (ENXIO);
}
}
/*
* Enable the GMAC ethernet cell if OpenFirmware says it is
* used
*/
for (child = OF_child(node); child; child = OF_peer(child)) {
char compat[32];
memset(compat, 0, sizeof(compat));
OF_getprop(child, "compatible", compat, sizeof(compat));
if (strcmp(compat, "gmac") == 0) {
unin_enable_gmac();
}
}
/*
* Write out the correct PIC interrupt values to config space
* of all devices on the bus. This has to be done after the GEM
* cell is enabled above.
*/
ofw_pci_fixup(dev, sc->sc_bus, node);
device_add_child(dev, "pci", device_get_unit(dev));
return (bus_generic_attach(dev));
}
static int
uninorth_maxslots(device_t dev)
{
return (PCI_SLOTMAX);
}
static u_int32_t
uninorth_read_config(device_t dev, u_int bus, u_int slot, u_int func, u_int reg,
int width)
{
struct uninorth_softc *sc;
vm_offset_t caoff;
sc = device_get_softc(dev);
caoff = sc->sc_data + (reg & 0x07);
if (uninorth_enable_config(sc, bus, slot, func, reg) != 0) {
switch (width) {
case 1:
return (in8rb(caoff));
break;
case 2:
return (in16rb(caoff));
break;
case 4:
return (in32rb(caoff));
break;
}
}
return (0xffffffff);
}
static void
uninorth_write_config(device_t dev, u_int bus, u_int slot, u_int func,
u_int reg, u_int32_t val, int width)
{
struct uninorth_softc *sc;
vm_offset_t caoff;
sc = device_get_softc(dev);
caoff = sc->sc_data + (reg & 0x07);
if (uninorth_enable_config(sc, bus, slot, func, reg)) {
switch (width) {
case 1:
out8rb(caoff, val);
(void)in8rb(caoff);
break;
case 2:
out16rb(caoff, val);
(void)in16rb(caoff);
break;
case 4:
out32rb(caoff, val);
(void)in32rb(caoff);
break;
}
}
}
static int
uninorth_route_interrupt(device_t bus, device_t dev, int pin)
{
return (0);
}
static int
uninorth_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
{
struct uninorth_softc *sc;
sc = device_get_softc(dev);
switch (which) {
case PCIB_IVAR_BUS:
*result = sc->sc_bus;
return (0);
break;
}
return (ENOENT);
}
static struct resource *
uninorth_alloc_resource(device_t bus, device_t child, int type, int *rid,
u_long start, u_long end, u_long count, u_int flags)
{
struct uninorth_softc *sc;
struct resource *rv;
struct rman *rm;
bus_space_tag_t bt;
int needactivate;
needactivate = flags & RF_ACTIVE;
flags &= ~RF_ACTIVE;
sc = device_get_softc(bus);
switch (type) {
case SYS_RES_MEMORY:
rm = &sc->sc_mem_rman;
bt = PPC_BUS_SPACE_MEM;
if (flags & PPC_BUS_SPARSE4)
bt |= 4;
break;
case SYS_RES_IRQ:
return (bus_alloc_resource(bus, type, rid, start, end, count,
flags));
break;
default:
device_printf(bus, "unknown resource request from %s\n",
device_get_nameunit(child));
return (NULL);
}
rv = rman_reserve_resource(rm, start, end, count, flags, child);
if (rv == NULL) {
device_printf(bus, "failed to reserve resource for %s\n",
device_get_nameunit(child));
return (NULL);
}
rman_set_bustag(rv, bt);
rman_set_bushandle(rv, rman_get_start(rv));
if (needactivate) {
if (bus_activate_resource(child, type, *rid, rv) != 0) {
device_printf(bus,
"failed to activate resource for %s\n",
device_get_nameunit(child));
rman_release_resource(rv);
return (NULL);
}
}
return (rv);
}
static int
uninorth_activate_resource(device_t bus, device_t child, int type, int rid,
struct resource *res)
{
void *p;
if (type == SYS_RES_IRQ)
return (bus_activate_resource(bus, type, rid, res));
if (type == SYS_RES_MEMORY) {
p = pmap_mapdev((vm_offset_t)rman_get_start(res),
(vm_size_t)rman_get_size(res));
if (p == NULL)
return (ENOMEM);
rman_set_virtual(res, p);
rman_set_bushandle(res, (u_long)p);
}
return (rman_activate_resource(res));
}
static int
uninorth_enable_config(struct uninorth_softc *sc, u_int bus, u_int slot,
u_int func, u_int reg)
{
u_int32_t cfgval;
if (sc->sc_bus == bus) {
/*
* No slots less than 11 on the primary bus
*/
if (slot < 11)
return (0);
cfgval = (1 << slot) | (func << 8) | (reg & 0xfc);
} else {
cfgval = (bus << 16) | (slot << 11) | (func << 8) |
(reg & 0xfc) | 1;
}
do {
out32rb(sc->sc_addr, cfgval);
} while (in32rb(sc->sc_addr) != cfgval);
return (1);
}
/*
* Driver to swallow UniNorth host bridges from the PCI bus side.
*/
static int
unhb_probe(device_t dev)
{
if (pci_get_class(dev) == PCIC_BRIDGE &&
pci_get_subclass(dev) == PCIS_BRIDGE_HOST) {
device_set_desc(dev, "Host to PCI bridge");
device_quiet(dev);
return (-10000);
}
return (ENXIO);
}
static int
unhb_attach(device_t dev)
{
return (0);
}
static device_method_t unhb_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, unhb_probe),
DEVMETHOD(device_attach, unhb_attach),
{ 0, 0 }
};
static driver_t unhb_driver = {
"unhb",
unhb_methods,
1,
};
static devclass_t unhb_devclass;
DRIVER_MODULE(unhb, pci, unhb_driver, unhb_devclass, 0, 0);
/*
* Small stub driver for the Uninorth chip itself, to allow setting
* of various parameters and cell enables
*/
static struct unin_chip_softc *uncsc;
static void
unin_enable_gmac(void)
{
volatile u_int *clkreg;
u_int32_t tmpl;
if (uncsc == NULL)
panic("unin_enable_gmac: device not found");
clkreg = (void *)(uncsc->sc_addr + UNIN_CLOCKCNTL);
tmpl = inl(clkreg);
tmpl |= UNIN_CLOCKCNTL_GMAC;
outl(clkreg, tmpl);
}
static int
unin_chip_probe(device_t dev)
{
char *name;
name = nexus_get_name(dev);
if (name == NULL)
return (ENXIO);
if (strcmp(name, "uni-n") != 0)
return (ENXIO);
device_set_desc(dev, "Apple UniNorth System Controller");
return (0);
}
static int
unin_chip_attach(device_t dev)
{
phandle_t node;
u_int reg[2];
uncsc = device_get_softc(dev);
node = nexus_get_node(dev);
if (OF_getprop(node, "reg", reg, sizeof(reg)) < 8)
return (ENXIO);
uncsc->sc_physaddr = reg[0];
uncsc->sc_size = reg[1];
/*
* Only map the first page, since that is where the registers
* of interest lie.
*/
uncsc->sc_addr = (vm_offset_t) pmap_mapdev(reg[0], PAGE_SIZE);
uncsc->sc_version = *(u_int *)uncsc->sc_addr;
device_printf(dev, "Version %d\n", uncsc->sc_version);
return (0);
}
static device_method_t unin_chip_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, unin_chip_probe),
DEVMETHOD(device_attach, unin_chip_attach),
{ 0, 0 }
};
static driver_t unin_chip_driver = {
"unin",
unin_chip_methods,
sizeof(struct unin_chip_softc)
};
static devclass_t unin_chip_devclass;
DRIVER_MODULE(unin, nexus, unin_chip_driver, unin_chip_devclass, 0, 0);