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/*-
* Copyright (c) 2006 Marius Strobl <marius@FreeBSD.org>
* 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/sparc64/sparc64/upa.c 230687 2012-01-28 23:53:06Z marius $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/resource.h>
#include <sys/rman.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>
#include <dev/ofw/openfirm.h>
#include <machine/bus.h>
#include <machine/bus_common.h>
#include <machine/intr_machdep.h>
#include <machine/resource.h>
#define UPA_NREG 3
#define UPA_CFG 0
#define UPA_IMR1 1
#define UPA_IMR2 2
/* UPA_CFG bank */
#define UPA_CFG_UPA0 0x00 /* UPA0 config register */
#define UPA_CFG_UPA1 0x08 /* UPA1 config register */
#define UPA_CFG_IF 0x10 /* interface config register */
#define UPA_CFG_IF_RST 0x00
#define UPA_CFG_IF_POK_RST 0x02
#define UPA_CFG_IF_POK 0x03
#define UPA_CFG_ESTAR 0x18 /* Estar config register */
#define UPA_CFG_ESTAR_SPEED_FULL 0x01
#define UPA_CFG_ESTAR_SPEED_1_2 0x02
#define UPA_CFG_ESTAR_SPEED_1_64 0x40
#define UPA_INO_BASE 0x2a
#define UPA_INO_MAX 0x2b
struct upa_regs {
uint64_t phys;
uint64_t size;
};
struct upa_ranges {
uint64_t child;
uint64_t parent;
uint64_t size;
};
struct upa_devinfo {
struct ofw_bus_devinfo udi_obdinfo;
struct resource_list udi_rl;
};
struct upa_softc {
struct resource *sc_res[UPA_NREG];
bus_space_tag_t sc_bt[UPA_NREG];
bus_space_handle_t sc_bh[UPA_NREG];
uint32_t sc_ign;
int sc_nrange;
struct upa_ranges *sc_ranges;
};
#define UPA_READ(sc, reg, off) \
bus_space_read_8((sc)->sc_bt[(reg)], (sc)->sc_bh[(reg)], (off))
#define UPA_WRITE(sc, reg, off, val) \
bus_space_write_8((sc)->sc_bt[(reg)], (sc)->sc_bh[(reg)], (off), (val))
static device_probe_t upa_probe;
static device_attach_t upa_attach;
static bus_print_child_t upa_print_child;
static bus_probe_nomatch_t upa_probe_nomatch;
static bus_alloc_resource_t upa_alloc_resource;
static bus_adjust_resource_t upa_adjust_resource;
static bus_setup_intr_t upa_setup_intr;
static bus_get_resource_list_t upa_get_resource_list;
static ofw_bus_get_devinfo_t upa_get_devinfo;
static void upa_intr_enable(void *);
static void upa_intr_disable(void *);
static void upa_intr_assign(void *);
static struct upa_devinfo *upa_setup_dinfo(device_t, struct upa_softc *,
phandle_t, uint32_t);
static void upa_destroy_dinfo(struct upa_devinfo *);
static int upa_print_res(struct upa_devinfo *);
static device_method_t upa_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, upa_probe),
DEVMETHOD(device_attach, upa_attach),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
DEVMETHOD(device_suspend, bus_generic_suspend),
DEVMETHOD(device_resume, bus_generic_resume),
/* Bus interface */
DEVMETHOD(bus_print_child, upa_print_child),
DEVMETHOD(bus_probe_nomatch, upa_probe_nomatch),
DEVMETHOD(bus_read_ivar, bus_generic_read_ivar),
DEVMETHOD(bus_write_ivar, bus_generic_write_ivar),
DEVMETHOD(bus_alloc_resource, upa_alloc_resource),
DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
DEVMETHOD(bus_adjust_resource, upa_adjust_resource),
DEVMETHOD(bus_release_resource, bus_generic_rl_release_resource),
DEVMETHOD(bus_setup_intr, upa_setup_intr),
DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
DEVMETHOD(bus_get_resource, bus_generic_rl_get_resource),
DEVMETHOD(bus_get_resource_list, upa_get_resource_list),
DEVMETHOD(bus_child_pnpinfo_str, ofw_bus_gen_child_pnpinfo_str),
/* ofw_bus interface */
DEVMETHOD(ofw_bus_get_devinfo, upa_get_devinfo),
DEVMETHOD(ofw_bus_get_compat, ofw_bus_gen_get_compat),
DEVMETHOD(ofw_bus_get_model, ofw_bus_gen_get_model),
DEVMETHOD(ofw_bus_get_name, ofw_bus_gen_get_name),
DEVMETHOD(ofw_bus_get_node, ofw_bus_gen_get_node),
DEVMETHOD(ofw_bus_get_type, ofw_bus_gen_get_type),
DEVMETHOD_END
};
static devclass_t upa_devclass;
DEFINE_CLASS_0(upa, upa_driver, upa_methods, sizeof(struct upa_softc));
EARLY_DRIVER_MODULE(upa, nexus, upa_driver, upa_devclass, 0, 0, BUS_PASS_BUS);
static const struct intr_controller upa_ic = {
upa_intr_enable,
upa_intr_disable,
upa_intr_assign,
/* The interrupts are pulse type and thus automatically cleared. */
NULL
};
struct upa_icarg {
struct upa_softc *uica_sc;
u_int uica_imr;
};
static int
upa_probe(device_t dev)
{
const char* compat;
compat = ofw_bus_get_compat(dev);
if (compat != NULL && strcmp(ofw_bus_get_name(dev), "upa") == 0 &&
strcmp(compat, "upa64s") == 0) {
device_set_desc(dev, "UPA bridge");
return (BUS_PROBE_DEFAULT);
}
return (ENXIO);
}
static int
upa_attach(device_t dev)
{
struct upa_devinfo *udi;
struct upa_icarg *uica;
struct upa_softc *sc;
phandle_t child, node;
device_t cdev;
uint32_t portid;
int i, imr, j, rid;
#if 1
device_t *children, schizo;
u_long scount, sstart, ucount, ustart;
int nchildren;
#endif
sc = device_get_softc(dev);
node = ofw_bus_get_node(dev);
for (i = UPA_CFG; i <= UPA_IMR2; i++) {
rid = i;
/*
* The UPA_IMR{1,2} resources are shared with that of the
* Schizo PCI bus B CSR bank.
*/
#if 0
sc->sc_res[i] = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
&rid, ((i == UPA_IMR1 || i == UPA_IMR2) ? RF_SHAREABLE :
0) | RF_ACTIVE);
if (sc->sc_res[i] == NULL) {
device_printf(dev,
"could not allocate resource %d\n", i);
goto fail;
}
sc->sc_bt[i] = rman_get_bustag(sc->sc_res[i]);
sc->sc_bh[i] = rman_get_bushandle(sc->sc_res[i]);
#else
/*
* Workaround for the fact that rman(9) only allows to
* share resources of the same size.
*/
if (i == UPA_IMR1 || i == UPA_IMR2) {
if (bus_get_resource(dev, SYS_RES_MEMORY, i, &ustart,
&ucount) != 0) {
device_printf(dev,
"could not determine UPA resource\n");
goto fail;
}
if (device_get_children(device_get_parent(dev),
&children, &nchildren) != 0) {
device_printf(dev, "could not get children\n");
goto fail;
}
schizo = NULL;
for (j = 0; j < nchildren; j++) {
if (ofw_bus_get_type(children[j]) != NULL &&
strcmp(ofw_bus_get_type(children[j]),
"pci") == 0 &&
ofw_bus_get_compat(children[j]) != NULL &&
strcmp(ofw_bus_get_compat(children[j]),
"pci108e,8001") == 0 &&
((bus_get_resource_start(children[j],
SYS_RES_MEMORY, 0) >> 20) & 1) == 1) {
schizo = children[j];
break;
}
}
free(children, M_TEMP);
if (schizo == NULL) {
device_printf(dev, "could not find Schizo\n");
goto fail;
}
if (bus_get_resource(schizo, SYS_RES_MEMORY, 0,
&sstart, &scount) != 0) {
device_printf(dev,
"could not determine Schizo resource\n");
goto fail;
}
sc->sc_res[i] = bus_alloc_resource(dev, SYS_RES_MEMORY,
&rid, sstart, sstart + scount - 1, scount,
RF_SHAREABLE | RF_ACTIVE);
} else
sc->sc_res[i] = bus_alloc_resource_any(dev,
SYS_RES_MEMORY, &rid, RF_ACTIVE);
if (sc->sc_res[i] == NULL) {
device_printf(dev,
"could not allocate resource %d\n", i);
goto fail;
}
sc->sc_bt[i] = rman_get_bustag(sc->sc_res[i]);
sc->sc_bh[i] = rman_get_bushandle(sc->sc_res[i]);
if (i == UPA_IMR1 || i == UPA_IMR2)
bus_space_subregion(sc->sc_bt[i], sc->sc_bh[i],
ustart - sstart, ucount, &sc->sc_bh[i]);
#endif
}
if (OF_getprop(node, "portid", &sc->sc_ign, sizeof(sc->sc_ign)) == -1) {
device_printf(dev, "could not determine IGN\n");
goto fail;
}
sc->sc_nrange = OF_getprop_alloc(node, "ranges", sizeof(*sc->sc_ranges),
(void **)&sc->sc_ranges);
if (sc->sc_nrange == -1) {
device_printf(dev, "could not determine ranges\n");
goto fail;
}
/*
* Hunt through all the interrupt mapping regs and register our
* interrupt controller for the corresponding interrupt vectors.
* We do this early in order to be able to catch stray interrupts.
*/
for (i = UPA_INO_BASE; i <= UPA_INO_MAX; i++) {
imr = 0;
for (j = UPA_IMR1; j <= UPA_IMR2; j++) {
if (INTVEC(UPA_READ(sc, j, 0x0)) ==
INTMAP_VEC(sc->sc_ign, i)) {
imr = j;
break;
}
}
if (imr == 0)
continue;
uica = malloc(sizeof(*uica), M_DEVBUF, M_NOWAIT);
if (uica == NULL)
panic("%s: could not allocate interrupt controller "
"argument", __func__);
uica->uica_sc = sc;
uica->uica_imr = imr;
#ifdef UPA_DEBUG
device_printf(dev, "intr map (INO %d) IMR%d: %#lx\n",
i, imr, (u_long)UPA_READ(sc, imr, 0x0));
#endif
j = intr_controller_register(INTMAP_VEC(sc->sc_ign, i),
&upa_ic, uica);
if (j != 0)
device_printf(dev, "could not register interrupt "
"controller for INO %d (%d)\n", i, j);
}
/* Make sure the power level is appropriate for normal operation. */
if (UPA_READ(sc, UPA_CFG, UPA_CFG_IF) != UPA_CFG_IF_POK) {
if (bootverbose)
device_printf(dev, "applying power\n");
UPA_WRITE(sc, UPA_CFG, UPA_CFG_ESTAR, UPA_CFG_ESTAR_SPEED_1_2);
UPA_WRITE(sc, UPA_CFG, UPA_CFG_ESTAR, UPA_CFG_ESTAR_SPEED_FULL);
(void)UPA_READ(sc, UPA_CFG, UPA_CFG_ESTAR);
UPA_WRITE(sc, UPA_CFG, UPA_CFG_IF, UPA_CFG_IF_POK_RST);
(void)UPA_READ(sc, UPA_CFG, UPA_CFG_IF);
DELAY(20000);
UPA_WRITE(sc, UPA_CFG, UPA_CFG_IF, UPA_CFG_IF_POK);
(void)UPA_READ(sc, UPA_CFG, UPA_CFG_IF);
}
for (child = OF_child(node); child != 0; child = OF_peer(child)) {
/*
* The `upa-portid' properties of the children are used as
* index for the interrupt mapping registers.
* The `upa-portid' properties are also used to make up the
* INOs of the children as the values contained in their
* `interrupts' properties are bogus.
*/
if (OF_getprop(child, "upa-portid", &portid,
sizeof(portid)) == -1) {
device_printf(dev,
"could not determine upa-portid of child 0x%lx\n",
(unsigned long)child);
continue;
}
if (portid > 1) {
device_printf(dev,
"upa-portid %d of child 0x%lx invalid\n", portid,
(unsigned long)child);
continue;
}
if ((udi = upa_setup_dinfo(dev, sc, child, portid)) == NULL)
continue;
if ((cdev = device_add_child(dev, NULL, -1)) == NULL) {
device_printf(dev, "<%s>: device_add_child failed\n",
udi->udi_obdinfo.obd_name);
upa_destroy_dinfo(udi);
continue;
}
device_set_ivars(cdev, udi);
}
return (bus_generic_attach(dev));
fail:
for (i = UPA_CFG; i <= UPA_IMR2 && sc->sc_res[i] != NULL; i++)
bus_release_resource(dev, SYS_RES_MEMORY,
rman_get_rid(sc->sc_res[i]), sc->sc_res[i]);
return (ENXIO);
}
static int
upa_print_child(device_t dev, device_t child)
{
int rv;
rv = bus_print_child_header(dev, child);
rv += upa_print_res(device_get_ivars(child));
rv += bus_print_child_footer(dev, child);
return (rv);
}
static void
upa_probe_nomatch(device_t dev, device_t child)
{
const char *type;
device_printf(dev, "<%s>", ofw_bus_get_name(child));
upa_print_res(device_get_ivars(child));
type = ofw_bus_get_type(child);
printf(" type %s (no driver attached)\n",
type != NULL ? type : "unknown");
}
static struct resource *
upa_alloc_resource(device_t dev, device_t child, int type, int *rid,
u_long start, u_long end, u_long count, u_int flags)
{
struct resource_list *rl;
struct resource_list_entry *rle;
struct upa_softc *sc;
struct resource *rv;
bus_addr_t cend, cstart;
int i, isdefault, passthrough;
isdefault = (start == 0UL && end == ~0UL);
passthrough = (device_get_parent(child) != dev);
sc = device_get_softc(dev);
rl = BUS_GET_RESOURCE_LIST(dev, child);
rle = NULL;
switch (type) {
case SYS_RES_IRQ:
return (resource_list_alloc(rl, dev, child, type, rid, start,
end, count, flags));
case SYS_RES_MEMORY:
if (!passthrough) {
rle = resource_list_find(rl, type, *rid);
if (rle == NULL)
return (NULL);
if (rle->res != NULL)
panic("%s: resource entry is busy", __func__);
if (isdefault) {
start = rle->start;
count = ulmax(count, rle->count);
end = ulmax(rle->end, start + count - 1);
}
}
for (i = 0; i < sc->sc_nrange; i++) {
cstart = sc->sc_ranges[i].child;
cend = cstart + sc->sc_ranges[i].size - 1;
if (start < cstart || start > cend)
continue;
if (end < cstart || end > cend)
return (NULL);
start += sc->sc_ranges[i].parent - cstart;
end += sc->sc_ranges[i].parent - cstart;
rv = bus_generic_alloc_resource(dev, child, type, rid,
start, end, count, flags);
if (!passthrough)
rle->res = rv;
return (rv);
}
/* FALLTHROUGH */
default:
return (NULL);
}
}
static void
upa_intr_enable(void *arg)
{
struct intr_vector *iv = arg;
struct upa_icarg *uica = iv->iv_icarg;
UPA_WRITE(uica->uica_sc, uica->uica_imr, 0x0,
INTMAP_ENABLE(iv->iv_vec, iv->iv_mid));
(void)UPA_READ(uica->uica_sc, uica->uica_imr, 0x0);
}
static void
upa_intr_disable(void *arg)
{
struct intr_vector *iv = arg;
struct upa_icarg *uica = iv->iv_icarg;
UPA_WRITE(uica->uica_sc, uica->uica_imr, 0x0, iv->iv_vec);
(void)UPA_READ(uica->uica_sc, uica->uica_imr, 0x0);
}
static void
upa_intr_assign(void *arg)
{
struct intr_vector *iv = arg;
struct upa_icarg *uica = iv->iv_icarg;
UPA_WRITE(uica->uica_sc, uica->uica_imr, 0x0, INTMAP_TID(
UPA_READ(uica->uica_sc, uica->uica_imr, 0x0), iv->iv_mid));
(void)UPA_READ(uica->uica_sc, uica->uica_imr, 0x0);
}
static int
upa_setup_intr(device_t dev, device_t child, struct resource *ires, int flags,
driver_filter_t *filt, driver_intr_t *func, void *arg, void **cookiep)
{
struct upa_softc *sc;
u_long vec;
sc = device_get_softc(dev);
/*
* Make sure the vector is fully specified and we registered
* our interrupt controller for it.
*/
vec = rman_get_start(ires);
if (INTIGN(vec) != sc->sc_ign || intr_vectors[vec].iv_ic != &upa_ic) {
device_printf(dev, "invalid interrupt vector 0x%lx\n", vec);
return (EINVAL);
}
return (bus_generic_setup_intr(dev, child, ires, flags, filt, func,
arg, cookiep));
}
static int
upa_adjust_resource(device_t bus __unused, device_t child __unused,
int type __unused, struct resource *r __unused, u_long start __unused,
u_long end __unused)
{
return (ENXIO);
}
static struct resource_list *
upa_get_resource_list(device_t dev, device_t child)
{
struct upa_devinfo *udi;
udi = device_get_ivars(child);
return (&udi->udi_rl);
}
static const struct ofw_bus_devinfo *
upa_get_devinfo(device_t dev, device_t child)
{
struct upa_devinfo *udi;
udi = device_get_ivars(child);
return (&udi->udi_obdinfo);
}
static struct upa_devinfo *
upa_setup_dinfo(device_t dev, struct upa_softc *sc, phandle_t node,
uint32_t portid)
{
struct upa_devinfo *udi;
struct upa_regs *reg;
uint32_t intr;
int i, nreg;
udi = malloc(sizeof(*udi), M_DEVBUF, M_WAITOK | M_ZERO);
if (ofw_bus_gen_setup_devinfo(&udi->udi_obdinfo, node) != 0) {
free(udi, M_DEVBUF);
return (NULL);
}
resource_list_init(&udi->udi_rl);
nreg = OF_getprop_alloc(node, "reg", sizeof(*reg), (void **)®);
if (nreg == -1) {
device_printf(dev, "<%s>: incomplete\n",
udi->udi_obdinfo.obd_name);
goto fail;
}
for (i = 0; i < nreg; i++)
resource_list_add(&udi->udi_rl, SYS_RES_MEMORY, i, reg[i].phys,
reg[i].phys + reg[i].size - 1, reg[i].size);
free(reg, M_OFWPROP);
intr = INTMAP_VEC(sc->sc_ign, (UPA_INO_BASE + portid));
resource_list_add(&udi->udi_rl, SYS_RES_IRQ, 0, intr, intr, 1);
return (udi);
fail:
upa_destroy_dinfo(udi);
return (NULL);
}
static void
upa_destroy_dinfo(struct upa_devinfo *dinfo)
{
resource_list_free(&dinfo->udi_rl);
ofw_bus_gen_destroy_devinfo(&dinfo->udi_obdinfo);
free(dinfo, M_DEVBUF);
}
static int
upa_print_res(struct upa_devinfo *udi)
{
int rv;
rv = 0;
rv += resource_list_print_type(&udi->udi_rl, "mem", SYS_RES_MEMORY,
"%#lx");
rv += resource_list_print_type(&udi->udi_rl, "irq", SYS_RES_IRQ,
"%ld");
return (rv);
}