struct resource *
quicc_bus_alloc_resource(device_t dev, device_t child, int type, int *rid,
rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
{
struct quicc_device *qd;
struct resource_list_entry *rle;
if (device_get_parent(child) != dev)
return (NULL);
/* We only support default allocations. */
if (!RMAN_IS_DEFAULT_RANGE(start, end))
return (NULL);
qd = device_get_ivars(child);
rle = resource_list_find(&qd->qd_rlist, type, *rid);
if (rle == NULL)
return (NULL);
if (rle->res == NULL) {
rle->res = rman_reserve_resource(qd->qd_rman, rle->start,
rle->start + rle->count - 1, rle->count, flags, child);
if (rle->res != NULL) {
rman_set_bustag(rle->res, &bs_be_tag);
rman_set_bushandle(rle->res, rle->start);
}
}
return (rle->res);
}
static struct resource *
localbus_alloc_resource(device_t bus, device_t child, int type, int *rid,
rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
{
struct localbus_devinfo *di;
struct resource_list_entry *rle;
/*
* Request for the default allocation with a given rid: use resource
* list stored in the local device info.
*/
if (RMAN_IS_DEFAULT_RANGE(start, end)) {
if ((di = device_get_ivars(child)) == NULL)
return (NULL);
if (type == SYS_RES_IOPORT)
type = SYS_RES_MEMORY;
rid = &di->di_bank;
rle = resource_list_find(&di->di_res, type, *rid);
if (rle == NULL) {
device_printf(bus, "no default resources for "
"rid = %d, type = %d\n", *rid, type);
return (NULL);
}
start = rle->start;
end = rle->end;
count = rle->count;
}
return (bus_generic_alloc_resource(bus, child, type, rid, start, end,
count, flags));
}
static struct resource *
gic_v3_acpi_bus_alloc_res(device_t bus, device_t child, int type, int *rid,
rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
{
struct gic_v3_acpi_devinfo *di;
struct resource_list_entry *rle;
/* We only allocate memory */
if (type != SYS_RES_MEMORY)
return (NULL);
if (RMAN_IS_DEFAULT_RANGE(start, end)) {
if ((di = device_get_ivars(child)) == NULL)
return (NULL);
/* Find defaults for this rid */
rle = resource_list_find(&di->di_rl, type, *rid);
if (rle == NULL)
return (NULL);
start = rle->start;
end = rle->end;
count = rle->count;
}
return (bus_generic_alloc_resource(bus, child, type, rid, start, end,
count, flags));
}
static struct resource *
ofwbus_alloc_resource(device_t bus, device_t child, int type, int *rid,
rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
{
struct ofwbus_softc *sc;
struct rman *rm;
struct resource *rv;
struct resource_list_entry *rle;
int isdefault, passthrough;
isdefault = RMAN_IS_DEFAULT_RANGE(start, end);
passthrough = (device_get_parent(child) != bus);
sc = device_get_softc(bus);
rle = NULL;
if (!passthrough && isdefault) {
rle = resource_list_find(BUS_GET_RESOURCE_LIST(bus, child),
type, *rid);
if (rle == NULL) {
if (bootverbose)
device_printf(bus, "no default resources for "
"rid = %d, type = %d\n", *rid, type);
return (NULL);
}
start = rle->start;
count = ulmax(count, rle->count);
end = ulmax(rle->end, start + count - 1);
}
switch (type) {
case SYS_RES_IRQ:
rm = &sc->sc_intr_rman;
break;
case SYS_RES_MEMORY:
rm = &sc->sc_mem_rman;
break;
default:
return (NULL);
}
rv = rman_reserve_resource(rm, start, end, count, flags & ~RF_ACTIVE,
child);
if (rv == NULL)
return (NULL);
rman_set_rid(rv, *rid);
if ((flags & RF_ACTIVE) != 0 && bus_activate_resource(child, type,
*rid, rv) != 0) {
rman_release_resource(rv);
return (NULL);
}
if (!passthrough && rle != NULL) {
rle->res = rv;
rle->start = rman_get_start(rv);
rle->end = rman_get_end(rv);
rle->count = rle->end - rle->start + 1;
}
return (rv);
}
static struct resource *
thunder_pem_alloc_resource(device_t dev, device_t child, int type, int *rid,
rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
{
struct thunder_pem_softc *sc = device_get_softc(dev);
struct rman *rm = NULL;
struct resource *res;
device_t parent_dev;
rm = thunder_pem_rman(sc, type);
if (rm == NULL) {
/* Find parent device. On ThunderX we know an exact path. */
parent_dev = device_get_parent(device_get_parent(dev));
return (BUS_ALLOC_RESOURCE(parent_dev, dev, type, rid, start,
end, count, flags));
}
if (!RMAN_IS_DEFAULT_RANGE(start, end)) {
/*
* We might get PHYS addresses here inherited from EFI.
* Convert to PCI if necessary.
*/
if (range_addr_is_phys(sc->ranges, start, count)) {
start = range_addr_phys_to_pci(sc->ranges, start);
end = start + count - 1;
}
}
if (bootverbose) {
device_printf(dev,
"thunder_pem_alloc_resource: start=%#lx, end=%#lx, count=%#lx\n",
start, end, count);
}
res = rman_reserve_resource(rm, start, end, count, flags, child);
if (res == NULL)
goto fail;
rman_set_rid(res, *rid);
if (flags & RF_ACTIVE)
if (bus_activate_resource(child, type, *rid, res)) {
rman_release_resource(res);
goto fail;
}
return (res);
fail:
if (bootverbose) {
device_printf(dev, "%s FAIL: type=%d, rid=%d, "
"start=%016lx, end=%016lx, count=%016lx, flags=%x\n",
__func__, type, *rid, start, end, count, flags);
}
return (NULL);
}
static struct resource *
simplebus_alloc_resource(device_t bus, device_t child, int type, int *rid,
rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
{
struct simplebus_softc *sc;
struct simplebus_devinfo *di;
struct resource_list_entry *rle;
int j;
sc = device_get_softc(bus);
/*
* Request for the default allocation with a given rid: use resource
* list stored in the local device info.
*/
if (RMAN_IS_DEFAULT_RANGE(start, end)) {
if ((di = device_get_ivars(child)) == NULL)
return (NULL);
if (type == SYS_RES_IOPORT)
type = SYS_RES_MEMORY;
rle = resource_list_find(&di->rl, type, *rid);
if (rle == NULL) {
if (bootverbose)
device_printf(bus, "no default resources for "
"rid = %d, type = %d\n", *rid, type);
return (NULL);
}
start = rle->start;
end = rle->end;
count = rle->count;
}
if (type == SYS_RES_MEMORY) {
/* Remap through ranges property */
for (j = 0; j < sc->nranges; j++) {
if (start >= sc->ranges[j].bus && end <
sc->ranges[j].bus + sc->ranges[j].size) {
start -= sc->ranges[j].bus;
start += sc->ranges[j].host;
end -= sc->ranges[j].bus;
end += sc->ranges[j].host;
break;
}
}
if (j == sc->nranges && sc->nranges != 0) {
if (bootverbose)
device_printf(bus, "Could not map resource "
"%#jx-%#jx\n", start, end);
return (NULL);
}
}
return (bus_generic_alloc_resource(bus, child, type, rid, start, end,
count, flags));
}
/*
* Allocate a resource on behalf of child. NB: child is usually going to be a
* child of one of our descendants, not a direct child of nexus0.
* (Exceptions include footbridge.)
*/
static struct resource *
nexus_alloc_resource(device_t bus, device_t child, int type, int *rid,
rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
{
struct nexus_device *ndev = DEVTONX(child);
struct resource *rv;
struct resource_list_entry *rle;
struct rman *rm;
int needactivate = flags & RF_ACTIVE;
/*
* If this is an allocation of the "default" range for a given
* RID, and we know what the resources for this device are
* (ie. they aren't maintained by a child bus), then work out
* the start/end values.
*/
if (RMAN_IS_DEFAULT_RANGE(start, end) && (count == 1)) {
if (device_get_parent(child) != bus || ndev == NULL)
return(NULL);
rle = resource_list_find(&ndev->nx_resources, type, *rid);
if (rle == NULL)
return(NULL);
start = rle->start;
end = rle->end;
count = rle->count;
}
switch (type) {
case SYS_RES_IRQ:
rm = &irq_rman;
break;
case SYS_RES_MEMORY:
case SYS_RES_IOPORT:
rm = &mem_rman;
break;
default:
return (NULL);
}
rv = rman_reserve_resource(rm, start, end, count, flags, child);
if (rv == NULL)
return (NULL);
rman_set_rid(rv, *rid);
rman_set_bushandle(rv, rman_get_start(rv));
if (needactivate) {
if (bus_activate_resource(child, type, *rid, rv)) {
rman_release_resource(rv);
return (NULL);
}
}
return (rv);
}
static struct resource *
mv_pcib_ctrl_alloc_resource(device_t bus, device_t child, int type, int *rid,
rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
{
struct mv_pcib_ctrl_devinfo *di;
struct resource_list_entry *rle;
struct mv_pcib_ctrl_softc *sc;
int i;
if (RMAN_IS_DEFAULT_RANGE(start, end)) {
if ((di = device_get_ivars(child)) == NULL)
return (NULL);
if (type != SYS_RES_MEMORY)
return (NULL);
/* Find defaults for this rid */
rle = resource_list_find(&di->di_rl, type, *rid);
if (rle == NULL)
return (NULL);
start = rle->start;
end = rle->end;
count = rle->count;
}
sc = device_get_softc(bus);
if (type == SYS_RES_MEMORY) {
/* Remap through ranges property */
for (i = 0; i < sc->nranges; i++) {
if (start >= sc->ranges[i].bus && end <
sc->ranges[i].bus + sc->ranges[i].size) {
start -= sc->ranges[i].bus;
start += sc->ranges[i].host;
end -= sc->ranges[i].bus;
end += sc->ranges[i].host;
break;
}
}
if (i == sc->nranges && sc->nranges != 0) {
device_printf(bus, "Could not map resource "
"%#llx-%#llx\n", start, end);
return (NULL);
}
}
return (bus_generic_alloc_resource(bus, child, type, rid, start, end,
count, flags));
}
static struct resource *
at91_alloc_resource(device_t dev, device_t child, int type, int *rid,
rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
{
struct at91_softc *sc = device_get_softc(dev);
struct resource_list_entry *rle;
struct at91_ivar *ivar = device_get_ivars(child);
struct resource_list *rl = &ivar->resources;
bus_space_handle_t bsh;
if (device_get_parent(child) != dev)
return (BUS_ALLOC_RESOURCE(device_get_parent(dev), child,
type, rid, start, end, count, flags));
rle = resource_list_find(rl, type, *rid);
if (rle == NULL)
return (NULL);
if (rle->res)
panic("Resource rid %d type %d already in use", *rid, type);
if (RMAN_IS_DEFAULT_RANGE(start, end)) {
start = rle->start;
count = ulmax(count, rle->count);
end = ulmax(rle->end, start + count - 1);
}
switch (type)
{
case SYS_RES_IRQ:
rle->res = rman_reserve_resource(&sc->sc_irq_rman,
start, end, count, flags, child);
break;
case SYS_RES_MEMORY:
rle->res = rman_reserve_resource(&sc->sc_mem_rman,
start, end, count, flags, child);
if (rle->res != NULL) {
bus_space_map(arm_base_bs_tag, start,
rman_get_size(rle->res), 0, &bsh);
rman_set_bustag(rle->res, arm_base_bs_tag);
rman_set_bushandle(rle->res, bsh);
}
break;
}
if (rle->res) {
rle->start = rman_get_start(rle->res);
rle->end = rman_get_end(rle->res);
rle->count = count;
rman_set_rid(rle->res, *rid);
}
return (rle->res);
}
static struct resource *
gpiobus_alloc_resource(device_t bus, device_t child, int type, int *rid,
rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
{
struct gpiobus_softc *sc;
struct resource *rv;
struct resource_list *rl;
struct resource_list_entry *rle;
int isdefault;
if (type != SYS_RES_IRQ)
return (NULL);
isdefault = (RMAN_IS_DEFAULT_RANGE(start, end) && count == 1);
rle = NULL;
if (isdefault) {
rl = BUS_GET_RESOURCE_LIST(bus, child);
if (rl == NULL)
return (NULL);
rle = resource_list_find(rl, type, *rid);
if (rle == NULL)
return (NULL);
if (rle->res != NULL)
panic("%s: resource entry is busy", __func__);
start = rle->start;
count = rle->count;
end = rle->end;
}
sc = device_get_softc(bus);
rv = rman_reserve_resource(&sc->sc_intr_rman, start, end, count, flags,
child);
if (rv == NULL)
return (NULL);
rman_set_rid(rv, *rid);
if ((flags & RF_ACTIVE) != 0 &&
bus_activate_resource(child, type, *rid, rv) != 0) {
rman_release_resource(rv);
return (NULL);
}
return (rv);
}
static struct resource *
gic_v3_ofw_bus_alloc_res(device_t bus, device_t child, int type, int *rid,
rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
{
struct gic_v3_ofw_devinfo *di;
struct resource_list_entry *rle;
int ranges_len;
if (RMAN_IS_DEFAULT_RANGE(start, end)) {
if ((di = device_get_ivars(child)) == NULL)
return (NULL);
if (type != SYS_RES_MEMORY)
return (NULL);
/* Find defaults for this rid */
rle = resource_list_find(&di->di_rl, type, *rid);
if (rle == NULL)
return (NULL);
start = rle->start;
end = rle->end;
count = rle->count;
}
/*
* XXX: No ranges remap!
* Absolute address is expected.
*/
if (ofw_bus_has_prop(bus, "ranges")) {
ranges_len = OF_getproplen(ofw_bus_get_node(bus), "ranges");
if (ranges_len != 0) {
if (bootverbose) {
device_printf(child,
"Ranges remap not supported\n");
}
return (NULL);
}
}
return (bus_generic_alloc_resource(bus, child, type, rid, start, end,
count, flags));
}
/**
* Helper function for implementing BHND_BUS_ALLOC_RESOURCE().
*
* This simple implementation of BHND_BUS_ALLOC_RESOURCE() determines
* any default values via BUS_GET_RESOURCE_LIST(), and calls
* BHND_BUS_ALLOC_RESOURCE() method of the parent of @p dev.
*
* If no parent device is available, the request is instead delegated to
* BUS_ALLOC_RESOURCE().
*/
struct bhnd_resource *
bhnd_generic_alloc_bhnd_resource(device_t dev, device_t child, int type,
int *rid, rman_res_t start, rman_res_t end, rman_res_t count,
u_int flags)
{
struct bhnd_resource *r;
struct resource_list *rl;
struct resource_list_entry *rle;
bool isdefault;
bool passthrough;
passthrough = (device_get_parent(child) != dev);
isdefault = RMAN_IS_DEFAULT_RANGE(start, end);
/* the default RID must always be the first device port/region. */
if (!passthrough && *rid == 0) {
int rid0 = bhnd_get_port_rid(child, BHND_PORT_DEVICE, 0, 0);
KASSERT(*rid == rid0,
("rid 0 does not map to the first device port (%d)", rid0));
}
/* Determine locally-known defaults before delegating the request. */
if (!passthrough && isdefault) {
/* fetch resource list from child's bus */
rl = BUS_GET_RESOURCE_LIST(dev, child);
if (rl == NULL)
return (NULL); /* no resource list */
/* look for matching type/rid pair */
rle = resource_list_find(BUS_GET_RESOURCE_LIST(dev, child),
type, *rid);
if (rle == NULL)
return (NULL);
/* set default values */
start = rle->start;
end = rle->end;
count = ulmax(count, rle->count);
}
/* Try to delegate to our parent. */
if (device_get_parent(dev) != NULL) {
return (BHND_BUS_ALLOC_RESOURCE(device_get_parent(dev), child,
type, rid, start, end, count, flags));
}
/* If this is the bus root, use a real bus-allocated resource */
r = malloc(sizeof(struct bhnd_resource), M_BHND, M_NOWAIT);
if (r == NULL)
return NULL;
/* Allocate the bus resource, marking it as 'direct' (not requiring
* any bus window remapping to perform I/O) */
r->direct = true;
r->res = BUS_ALLOC_RESOURCE(dev, child, type, rid, start, end,
count, flags);
if (r->res == NULL) {
free(r, M_BHND);
return NULL;
}
return (r);
}
static struct resource *
apb_alloc_resource(device_t bus, device_t child, int type, int *rid,
rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
{
struct apb_softc *sc = device_get_softc(bus);
struct apb_ivar *ivar = device_get_ivars(child);
struct resource *rv;
struct resource_list_entry *rle;
struct rman *rm;
int isdefault, needactivate, passthrough;
isdefault = (RMAN_IS_DEFAULT_RANGE(start, end));
needactivate = flags & RF_ACTIVE;
/*
* Pass memory requests to nexus device
*/
passthrough = (device_get_parent(child) != bus);
rle = NULL;
dprintf("%s: entry (%p, %p, %d, %d, %p, %p, %jd, %d)\n",
__func__, bus, child, type, *rid, (void *)(intptr_t)start,
(void *)(intptr_t)end, count, flags);
if (passthrough)
return (BUS_ALLOC_RESOURCE(device_get_parent(bus), child, type,
rid, start, end, count, flags));
/*
* If this is an allocation of the "default" range for a given RID,
* and we know what the resources for this device are (ie. they aren't
* maintained by a child bus), then work out the start/end values.
*/
if (isdefault) {
rle = resource_list_find(&ivar->resources, type, *rid);
if (rle == NULL) {
return (NULL);
}
if (rle->res != NULL) {
panic("%s: resource entry is busy", __func__);
}
start = rle->start;
end = rle->end;
count = rle->count;
dprintf("%s: default resource (%p, %p, %ld)\n",
__func__, (void *)(intptr_t)start,
(void *)(intptr_t)end, count);
}
switch (type) {
case SYS_RES_IRQ:
rm = &sc->apb_irq_rman;
break;
case SYS_RES_MEMORY:
rm = &sc->apb_mem_rman;
break;
default:
printf("%s: unknown resource type %d\n", __func__, type);
return (0);
}
rv = rman_reserve_resource(rm, start, end, count, flags, child);
if (rv == 0) {
printf("%s: could not reserve resource\n", __func__);
return (0);
}
rman_set_rid(rv, *rid);
if (needactivate) {
if (bus_activate_resource(child, type, *rid, rv)) {
printf("%s: could not activate resource\n", __func__);
rman_release_resource(rv);
return (0);
}
}
return (rv);
}
static struct resource *
chipc_alloc_resource(device_t dev, device_t child, int type,
int *rid, rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
{
struct chipc_softc *sc;
struct chipc_region *cr;
struct resource_list_entry *rle;
struct resource *rv;
struct rman *rm;
int error;
bool passthrough, isdefault;
sc = device_get_softc(dev);
passthrough = (device_get_parent(child) != dev);
isdefault = RMAN_IS_DEFAULT_RANGE(start, end);
rle = NULL;
/* Fetch the resource manager, delegate request if necessary */
rm = chipc_get_rman(sc, type);
if (rm == NULL) {
/* Requested resource type is delegated to our parent */
rv = bus_generic_rl_alloc_resource(dev, child, type, rid,
start, end, count, flags);
return (rv);
}
/* Populate defaults */
if (!passthrough && isdefault) {
/* Fetch the resource list entry. */
rle = resource_list_find(BUS_GET_RESOURCE_LIST(dev, child),
type, *rid);
if (rle == NULL) {
device_printf(dev,
"default resource %#x type %d for child %s "
"not found\n", *rid, type,
device_get_nameunit(child));
return (NULL);
}
if (rle->res != NULL) {
device_printf(dev,
"resource entry %#x type %d for child %s is busy "
"[%d]\n",
*rid, type, device_get_nameunit(child),
rman_get_flags(rle->res));
return (NULL);
}
start = rle->start;
end = rle->end;
count = ulmax(count, rle->count);
}
/* Locate a mapping region */
if ((cr = chipc_find_region(sc, start, end)) == NULL) {
/* Resource requests outside our shared port regions can be
* delegated to our parent. */
rv = bus_generic_rl_alloc_resource(dev, child, type, rid,
start, end, count, flags);
return (rv);
}
/* Try to retain a region reference */
if ((error = chipc_retain_region(sc, cr, RF_ALLOCATED)))
return (NULL);
/* Make our rman reservation */
rv = rman_reserve_resource(rm, start, end, count, flags & ~RF_ACTIVE,
child);
if (rv == NULL) {
chipc_release_region(sc, cr, RF_ALLOCATED);
return (NULL);
}
rman_set_rid(rv, *rid);
/* Activate */
if (flags & RF_ACTIVE) {
error = bus_activate_resource(child, type, *rid, rv);
if (error) {
device_printf(dev,
"failed to activate entry %#x type %d for "
"child %s: %d\n",
*rid, type, device_get_nameunit(child), error);
chipc_release_region(sc, cr, RF_ALLOCATED);
rman_release_resource(rv);
return (NULL);
}
}
/* Update child's resource list entry */
if (rle != NULL) {
rle->res = rv;
rle->start = rman_get_start(rv);
rle->end = rman_get_end(rv);
rle->count = rman_get_size(rv);
}
return (rv);
}
static struct resource *
lbc_alloc_resource(device_t bus, device_t child, int type, int *rid,
rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
{
struct lbc_softc *sc;
struct lbc_devinfo *di;
struct resource_list_entry *rle;
struct resource *res;
struct rman *rm;
int needactivate;
/* We only support default allocations. */
if (!RMAN_IS_DEFAULT_RANGE(start, end))
return (NULL);
sc = device_get_softc(bus);
if (type == SYS_RES_IRQ)
return (bus_alloc_resource(bus, type, rid, start, end, count,
flags));
/*
* Request for the default allocation with a given rid: use resource
* list stored in the local device info.
*/
if ((di = device_get_ivars(child)) == NULL)
return (NULL);
if (type == SYS_RES_IOPORT)
type = SYS_RES_MEMORY;
rid = &di->di_bank;
rle = resource_list_find(&di->di_res, type, *rid);
if (rle == NULL) {
device_printf(bus, "no default resources for "
"rid = %d, type = %d\n", *rid, type);
return (NULL);
}
start = rle->start;
count = rle->count;
end = start + count - 1;
sc = device_get_softc(bus);
needactivate = flags & RF_ACTIVE;
flags &= ~RF_ACTIVE;
rm = &sc->sc_rman;
res = rman_reserve_resource(rm, start, end, count, flags, child);
if (res == NULL) {
device_printf(bus, "failed to reserve resource %#jx - %#jx "
"(%#jx)\n", start, end, count);
return (NULL);
}
rman_set_rid(res, *rid);
rman_set_bustag(res, &bs_be_tag);
rman_set_bushandle(res, rman_get_start(res));
if (needactivate)
if (bus_activate_resource(child, type, *rid, res)) {
device_printf(child, "resource activation failed\n");
rman_release_resource(res);
return (NULL);
}
return (res);
}
static struct resource *
ebus_alloc_resource(device_t bus, device_t child, int type, int *rid,
rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
{
struct ebus_softc *sc;
struct resource_list *rl;
struct resource_list_entry *rle = NULL;
struct resource *res;
struct ebus_rinfo *eri;
struct ebus_nexus_ranges *enr;
uint64_t cend, cstart, offset;
int i, isdefault, passthrough, ridx;
isdefault = RMAN_IS_DEFAULT_RANGE(start, end);
passthrough = (device_get_parent(child) != bus);
sc = device_get_softc(bus);
rl = BUS_GET_RESOURCE_LIST(bus, child);
switch (type) {
case SYS_RES_MEMORY:
KASSERT(!(isdefault && passthrough),
("%s: passthrough of default allocation", __func__));
if (!passthrough) {
rle = resource_list_find(rl, type, *rid);
if (rle == NULL)
return (NULL);
KASSERT(rle->res == NULL,
("%s: resource entry is busy", __func__));
if (isdefault) {
start = rle->start;
count = ulmax(count, rle->count);
end = ulmax(rle->end, start + count - 1);
}
}
res = NULL;
if ((sc->sc_flags & EBUS_PCI) != 0) {
/*
* Map EBus ranges to PCI ranges. This may include
* changing the allocation type.
*/
type = ofw_isa_range_map(sc->sc_range, sc->sc_nrange,
&start, &end, &ridx);
eri = &sc->sc_rinfo[ridx];
res = rman_reserve_resource(&eri->eri_rman, start,
end, count, flags & ~RF_ACTIVE, child);
if (res == NULL)
return (NULL);
rman_set_rid(res, *rid);
if ((flags & RF_ACTIVE) != 0 && bus_activate_resource(
child, type, *rid, res) != 0) {
rman_release_resource(res);
return (NULL);
}
} else {
/* Map EBus ranges to nexus ranges. */
for (i = 0; i < sc->sc_nrange; i++) {
enr = &((struct ebus_nexus_ranges *)
sc->sc_range)[i];
cstart = (((uint64_t)enr->child_hi) << 32) |
enr->child_lo;
cend = cstart + enr->size - 1;
if (start >= cstart && end <= cend) {
offset =
(((uint64_t)enr->phys_hi) << 32) |
enr->phys_lo;
start += offset - cstart;
end += offset - cstart;
res = bus_generic_alloc_resource(bus,
child, type, rid, start, end,
count, flags);
break;
}
}
}
if (!passthrough)
rle->res = res;
return (res);
case SYS_RES_IRQ:
return (resource_list_alloc(rl, bus, child, type, rid, start,
end, count, flags));
}
return (NULL);
}
static struct resource *
sbus_alloc_resource(device_t bus, device_t child, int type, int *rid,
rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
{
struct sbus_softc *sc;
struct rman *rm;
struct resource *rv;
struct resource_list *rl;
struct resource_list_entry *rle;
device_t schild;
bus_addr_t toffs;
bus_size_t tend;
int i, slot;
int isdefault, passthrough;
isdefault = RMAN_IS_DEFAULT_RANGE(start, end);
passthrough = (device_get_parent(child) != bus);
rle = NULL;
sc = device_get_softc(bus);
rl = BUS_GET_RESOURCE_LIST(bus, child);
switch (type) {
case SYS_RES_IRQ:
return (resource_list_alloc(rl, bus, 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);
}
}
rm = NULL;
schild = child;
while (device_get_parent(schild) != bus)
schild = device_get_parent(schild);
slot = sbus_get_slot(schild);
for (i = 0; i < sc->sc_nrange; i++) {
if (sc->sc_rd[i].rd_slot != slot ||
start < sc->sc_rd[i].rd_coffset ||
start > sc->sc_rd[i].rd_cend)
continue;
/* Disallow cross-range allocations. */
if (end > sc->sc_rd[i].rd_cend)
return (NULL);
/* We've found the connection to the parent bus */
toffs = start - sc->sc_rd[i].rd_coffset;
tend = end - sc->sc_rd[i].rd_coffset;
rm = &sc->sc_rd[i].rd_rman;
break;
}
if (rm == NULL)
return (NULL);
rv = rman_reserve_resource(rm, toffs, tend, count, flags &
~RF_ACTIVE, child);
if (rv == NULL)
return (NULL);
rman_set_rid(rv, *rid);
if ((flags & RF_ACTIVE) != 0 && bus_activate_resource(child,
type, *rid, rv)) {
rman_release_resource(rv);
return (NULL);
}
if (!passthrough)
rle->res = rv;
return (rv);
default:
return (NULL);
}
}
/*
* Allocate a resource on behalf of child. NB: child is usually going to be a
* child of one of our descendants, not a direct child of nexus0.
* (Exceptions include footbridge.)
*/
static struct resource *
nexus_alloc_resource(device_t bus, device_t child, int type, int *rid,
rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
{
struct nexus_device *ndev = DEVTONX(child);
struct resource *rv;
struct resource_list_entry *rle;
struct rman *rm;
int isdefault, needactivate, passthrough;
dprintf("%s: entry (%p, %p, %d, %p, %p, %p, %jd, %d)\n",
__func__, bus, child, type, rid, (void *)(intptr_t)start,
(void *)(intptr_t)end, count, flags);
dprintf("%s: requested rid is %d\n", __func__, *rid);
isdefault = (RMAN_IS_DEFAULT_RANGE(start, end) && count == 1);
needactivate = flags & RF_ACTIVE;
passthrough = (device_get_parent(child) != bus);
rle = NULL;
/*
* If this is an allocation of the "default" range for a given RID,
* and we know what the resources for this device are (ie. they aren't
* maintained by a child bus), then work out the start/end values.
*/
if (isdefault) {
rle = resource_list_find(&ndev->nx_resources, type, *rid);
if (rle == NULL)
return (NULL);
if (rle->res != NULL) {
panic("%s: resource entry is busy", __func__);
}
start = rle->start;
end = rle->end;
count = rle->count;
}
switch (type) {
case SYS_RES_IRQ:
rm = &irq_rman;
break;
case SYS_RES_MEMORY:
rm = &mem_rman;
break;
default:
printf("%s: unknown resource type %d\n", __func__, type);
return (0);
}
rv = rman_reserve_resource(rm, start, end, count, flags, child);
if (rv == NULL) {
printf("%s: could not reserve resource for %s\n", __func__,
device_get_nameunit(child));
return (0);
}
rman_set_rid(rv, *rid);
if (needactivate) {
if (bus_activate_resource(child, type, *rid, rv)) {
printf("%s: could not activate resource\n", __func__);
rman_release_resource(rv);
return (0);
}
}
return (rv);
}