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freebsd-dev/sys/powerpc/powermac/macio.c

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/*
* Copyright 2002 by Peter Grehan. 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.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
*
* $FreeBSD$
*/
/*
* Driver for KeyLargo/Pangea, the MacPPC south bridge ASIC.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/bus.h>
#include <machine/bus.h>
#include <sys/rman.h>
#include <machine/vmparam.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <machine/pmap.h>
#include <machine/resource.h>
#include <dev/ofw/openfirm.h>
#include <powerpc/powermac/maciovar.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
static MALLOC_DEFINE(M_MACIO, "macio", "macio device information");
static int macio_probe(device_t);
static int macio_attach(device_t);
static int macio_print_child(device_t dev, device_t child);
static void macio_probe_nomatch(device_t, device_t);
static int macio_read_ivar(device_t, device_t, int, uintptr_t *);
static int macio_write_ivar(device_t, device_t, int, uintptr_t);
static struct resource *macio_alloc_resource(device_t, device_t, int, int *,
u_long, u_long, u_long, u_int);
static int macio_activate_resource(device_t, device_t, int, int,
struct resource *);
static int macio_deactivate_resource(device_t, device_t, int, int,
struct resource *);
static int macio_release_resource(device_t, device_t, int, int,
struct resource *);
static struct resource_list *macio_get_resource_list (device_t, device_t);
/*
* Bus interface definition
*/
static device_method_t macio_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, macio_probe),
DEVMETHOD(device_attach, macio_attach),
DEVMETHOD(device_detach, bus_generic_detach),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
DEVMETHOD(device_suspend, bus_generic_suspend),
DEVMETHOD(device_resume, bus_generic_resume),
/* Bus interface */
DEVMETHOD(bus_print_child, macio_print_child),
DEVMETHOD(bus_probe_nomatch, macio_probe_nomatch),
DEVMETHOD(bus_read_ivar, macio_read_ivar),
DEVMETHOD(bus_write_ivar, macio_write_ivar),
DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
DEVMETHOD(bus_alloc_resource, macio_alloc_resource),
DEVMETHOD(bus_release_resource, macio_release_resource),
DEVMETHOD(bus_activate_resource, macio_activate_resource),
DEVMETHOD(bus_deactivate_resource, macio_deactivate_resource),
DEVMETHOD(bus_get_resource_list, macio_get_resource_list),
{ 0, 0 }
};
static driver_t macio_pci_driver = {
"macio",
macio_methods,
sizeof(struct macio_softc)
};
devclass_t macio_devclass;
DRIVER_MODULE(macio, pci, macio_pci_driver, macio_devclass, 0, 0);
/*
* PCI ID search table
*/
static struct macio_pci_dev {
u_int32_t mpd_devid;
char *mpd_desc;
} macio_pci_devlist[] = {
{ 0x0017106b, "Paddington I/O Controller" },
{ 0x0022106b, "KeyLargo I/O Controller" },
{ 0x0025106b, "Pangea I/O Controller" },
{ 0x003e106b, "Intrepid I/O Controller" },
{ 0, NULL }
};
/*
* Devices to exclude from the probe
* XXX some of these may be required in the future...
*/
#define MACIO_QUIRK_IGNORE 0x00000001
#define MACIO_QUIRK_CHILD_HAS_INTR 0x00000002
struct macio_quirk_entry {
const char *mq_name;
int mq_quirks;
};
static struct macio_quirk_entry macio_quirks[] = {
{ "interrupt-controller", MACIO_QUIRK_IGNORE },
{ "escc-legacy", MACIO_QUIRK_IGNORE },
{ "timer", MACIO_QUIRK_IGNORE },
{ "escc", MACIO_QUIRK_CHILD_HAS_INTR },
{ NULL, 0 }
};
static int
macio_get_quirks(const char *name)
{
struct macio_quirk_entry *mqe;
for (mqe = macio_quirks; mqe->mq_name != NULL; mqe++)
if (strcmp(name, mqe->mq_name) == 0)
return (mqe->mq_quirks);
return (0);
}
/*
* Add an interrupt to the dev's resource list if present
*/
static void
macio_add_intr(phandle_t devnode, struct macio_devinfo *dinfo)
{
int intr;
if (dinfo->mdi_ninterrupts >= 5) {
printf("macio: device has more than 5 interrupts\n");
return;
}
if (OF_getprop(devnode, "interrupts", &intr, sizeof(intr)) == -1) {
if (OF_getprop(devnode, "AAPL,interrupts", &intr,
sizeof(intr)) == -1)
return;
}
if (intr == -1)
return;
resource_list_add(&dinfo->mdi_resources, SYS_RES_IRQ,
dinfo->mdi_ninterrupts, intr, intr, 1);
dinfo->mdi_interrupts[dinfo->mdi_ninterrupts] = intr;
dinfo->mdi_ninterrupts++;
}
static void
macio_add_reg(phandle_t devnode, struct macio_devinfo *dinfo)
{
struct macio_reg *reg;
int i, nreg;
nreg = OF_getprop_alloc(devnode, "reg", sizeof(*reg), (void **)&reg);
if (nreg == -1)
return;
dinfo->mdi_nregs = nreg;
dinfo->mdi_regs = reg;
for (i = 0; i < nreg; i++) {
resource_list_add(&dinfo->mdi_resources, SYS_RES_MEMORY, i,
reg[i].mr_base, reg[i].mr_base + reg[i].mr_size,
reg[i].mr_size);
}
}
/*
* PCI probe
*/
static int
macio_probe(device_t dev)
{
int i;
u_int32_t devid;
devid = pci_get_devid(dev);
for (i = 0; macio_pci_devlist[i].mpd_desc != NULL; i++) {
if (devid == macio_pci_devlist[i].mpd_devid) {
device_set_desc(dev, macio_pci_devlist[i].mpd_desc);
return (0);
}
}
return (ENXIO);
}
/*
* PCI attach: scan OpenFirmware child nodes, and attach these as children
* of the macio bus
*/
static int
macio_attach(device_t dev)
{
struct macio_softc *sc;
struct macio_devinfo *dinfo;
phandle_t root;
phandle_t child;
phandle_t subchild;
device_t cdev;
u_int reg[3];
char *name, *type;
int quirks;
sc = device_get_softc(dev);
root = sc->sc_node = OF_finddevice("mac-io");
/*
* Locate the device node and it's base address
*/
if (OF_getprop(root, "assigned-addresses",
reg, sizeof(reg)) < sizeof(reg)) {
return (ENXIO);
}
sc->sc_base = reg[2];
sc->sc_size = MACIO_REG_SIZE;
sc->sc_mem_rman.rm_type = RMAN_ARRAY;
sc->sc_mem_rman.rm_descr = "MacIO Device Memory";
if (rman_init(&sc->sc_mem_rman) != 0) {
device_printf(dev,
"failed to init mem range resources\n");
return (ENXIO);
}
rman_manage_region(&sc->sc_mem_rman, 0, sc->sc_size);
/*
* Iterate through the sub-devices
*/
for (child = OF_child(root); child != 0; child = OF_peer(child)) {
OF_getprop_alloc(child, "name", 1, (void **)&name);
OF_getprop_alloc(child, "device_type", 1, (void **)&type);
quirks = macio_get_quirks(name);
if ((quirks & MACIO_QUIRK_IGNORE) != 0) {
free(name, M_OFWPROP);
free(type, M_OFWPROP);
continue;
}
cdev = device_add_child(dev, NULL, -1);
if (cdev != NULL) {
dinfo = malloc(sizeof(*dinfo), M_MACIO, M_WAITOK);
memset(dinfo, 0, sizeof(*dinfo));
resource_list_init(&dinfo->mdi_resources);
dinfo->mdi_node = child;
dinfo->mdi_name = name;
dinfo->mdi_device_type = type;
dinfo->mdi_ninterrupts = 0;
macio_add_intr(child, dinfo);
macio_add_reg(child, dinfo);
if ((quirks & MACIO_QUIRK_CHILD_HAS_INTR) != 0) {
for (subchild = OF_child(child); subchild != 0;
subchild = OF_peer(subchild)) {
macio_add_intr(subchild, dinfo);
}
}
device_set_ivars(cdev, dinfo);
} else {
free(name, M_OFWPROP);
free(type, M_OFWPROP);
}
}
return (bus_generic_attach(dev));
}
static int
macio_print_child(device_t dev, device_t child)
{
struct macio_devinfo *dinfo;
struct resource_list *rl;
int retval = 0;
dinfo = device_get_ivars(child);
rl = &dinfo->mdi_resources;
retval += bus_print_child_header(dev, child);
retval += resource_list_print_type(rl, "mem", SYS_RES_MEMORY, "%#lx");
retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
retval += bus_print_child_footer(dev, child);
return (retval);
}
static void
macio_probe_nomatch(device_t dev, device_t child)
{
struct macio_devinfo *dinfo;
struct resource_list *rl;
if (bootverbose) {
dinfo = device_get_ivars(child);
rl = &dinfo->mdi_resources;
device_printf(dev, "<%s, %s>", macio_get_devtype(child),
macio_get_name(child));
resource_list_print_type(rl, "mem", SYS_RES_MEMORY, "%#lx");
resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld");
printf(" (no driver attached)\n");
}
}
static int
macio_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
{
struct macio_devinfo *dinfo;
if ((dinfo = device_get_ivars(child)) == 0)
return (ENOENT);
switch (which) {
case MACIO_IVAR_NODE:
*result = dinfo->mdi_node;
break;
case MACIO_IVAR_NAME:
*result = (uintptr_t)dinfo->mdi_name;
break;
case MACIO_IVAR_DEVTYPE:
*result = (uintptr_t)dinfo->mdi_device_type;
break;
case MACIO_IVAR_NREGS:
*result = dinfo->mdi_nregs;
break;
case MACIO_IVAR_REGS:
*result = (uintptr_t)dinfo->mdi_regs;
break;
default:
return (ENOENT);
}
return (0);
}
static int
macio_write_ivar(device_t dev, device_t child, int which, uintptr_t value)
{
return (EINVAL);
}
static struct resource *
macio_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 macio_softc *sc;
int needactivate;
struct resource *rv;
struct rman *rm;
bus_space_tag_t tagval;
u_long adjstart, adjend, adjcount;
struct macio_devinfo *dinfo;
struct resource_list_entry *rle;
sc = device_get_softc(bus);
dinfo = device_get_ivars(child);
needactivate = flags & RF_ACTIVE;
flags &= ~RF_ACTIVE;
switch (type) {
case SYS_RES_MEMORY:
case SYS_RES_IOPORT:
rle = resource_list_find(&dinfo->mdi_resources, SYS_RES_MEMORY,
*rid);
if (rle == NULL) {
device_printf(bus, "no rle for %s memory %d\n",
device_get_nameunit(child), *rid);
return (NULL);
}
if (start < rle->start)
adjstart = rle->start;
else if (start > rle->end)
adjstart = rle->end;
else
adjstart = start;
if (end < rle->start)
adjend = rle->start;
else if (end > rle->end)
adjend = rle->end;
else
adjend = end;
adjcount = adjend - adjstart;
rm = &sc->sc_mem_rman;
tagval = PPC_BUS_SPACE_MEM;
break;
case SYS_RES_IRQ:
rle = resource_list_find(&dinfo->mdi_resources, SYS_RES_IRQ,
*rid);
if (rle == NULL) {
if (dinfo->mdi_ninterrupts >= 5) {
device_printf(bus,
"%s has more than 5 interrupts\n",
device_get_nameunit(child));
return (NULL);
}
resource_list_add(&dinfo->mdi_resources, SYS_RES_IRQ,
dinfo->mdi_ninterrupts, start, start, 1);
dinfo->mdi_interrupts[dinfo->mdi_ninterrupts] = start;
dinfo->mdi_ninterrupts++;
}
return (resource_list_alloc(&dinfo->mdi_resources, bus, child,
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, adjstart, adjend, adjcount, flags,
child);
if (rv == NULL) {
device_printf(bus,
"failed to reserve resource %#lx - %#lx (%#lx) for %s\n",
adjstart, adjend, adjcount, device_get_nameunit(child));
return (NULL);
}
rman_set_bustag(rv, tagval);
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
macio_release_resource(device_t bus, device_t child, int type, int rid,
struct resource *res)
{
if (rman_get_flags(res) & RF_ACTIVE) {
int error = bus_deactivate_resource(child, type, rid, res);
if (error)
return error;
}
return (rman_release_resource(res));
}
static int
macio_activate_resource(device_t bus, device_t child, int type, int rid,
struct resource *res)
{
struct macio_softc *sc;
void *p;
sc = device_get_softc(bus);
if (type == SYS_RES_IRQ)
return (bus_activate_resource(bus, type, rid, res));
if ((type == SYS_RES_MEMORY) || (type == SYS_RES_IOPORT)) {
p = pmap_mapdev((vm_offset_t)rman_get_start(res) + sc->sc_base,
(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
macio_deactivate_resource(device_t bus, device_t child, int type, int rid,
struct resource *res)
{
/*
* If this is a memory resource, unmap it.
*/
if ((type == SYS_RES_MEMORY) || (type == SYS_RES_IOPORT)) {
u_int32_t psize;
psize = rman_get_size(res);
pmap_unmapdev((vm_offset_t)rman_get_virtual(res), psize);
}
return (rman_deactivate_resource(res));
}
static struct resource_list *
macio_get_resource_list (device_t dev, device_t child)
{
struct macio_devinfo *dinfo = device_get_ivars(child);
struct resource_list *rl = &dinfo->mdi_resources;
if (!rl)
return (NULL);
return (rl);
}
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