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- Add a device interface method for bus_get_resource_list() and use

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bus_generic_rl_release_resource() for the bus_release_resource() method
  instead of a local copy.
- Correctly handle pass-through allocations in central_alloc_resource().
This commit is contained in:
Marius Strobl 2005-03-19 00:47:02 +00:00
parent ab3ac78792
commit 7e51ba980a
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=143824
1 changed files with 27 additions and 32 deletions
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59
sys/sparc64/central/central.c
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@ -66,7 +66,7 @@ static device_attach_t central_attach;
static bus_print_child_t central_print_child;
static bus_probe_nomatch_t central_probe_nomatch;
static bus_alloc_resource_t central_alloc_resource;
static bus_release_resource_t central_release_resource;
static bus_get_resource_list_t central_get_resource_list;
static ofw_bus_get_compat_t central_get_compat;
static ofw_bus_get_model_t central_get_model;
static ofw_bus_get_name_t central_get_name;
@ -84,9 +84,10 @@ static device_method_t central_methods[] = {
DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
DEVMETHOD(bus_alloc_resource, central_alloc_resource),
DEVMETHOD(bus_release_resource, central_release_resource),
DEVMETHOD(bus_release_resource, bus_generic_rl_release_resource),
DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
DEVMETHOD(bus_get_resource_list, central_get_resource_list),
/* ofw_bus interface */
DEVMETHOD(ofw_bus_get_compat, central_get_compat),
@ -212,36 +213,41 @@ static struct resource *
central_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 resource_list *rl;
struct resource_list_entry *rle;
struct central_devinfo *cdi;
struct central_softc *sc;
struct resource *res;
bus_addr_t coffset;
bus_addr_t cend;
bus_addr_t phys;
int isdefault;
int passthrough;
int i;
isdefault = (start == 0UL && end == ~0UL);
passthrough = (device_get_parent(child) != bus);
res = NULL;
rle = NULL;
rl = BUS_GET_RESOURCE_LIST(bus, child);
sc = device_get_softc(bus);
cdi = device_get_ivars(child);
rle = resource_list_find(&cdi->cdi_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);
}
switch (type) {
case SYS_RES_IRQ:
res = bus_generic_alloc_resource(bus, child, type, rid,
start, end, count, flags);
return (resource_list_alloc(rl, bus, child, type, rid, start,
end, count, flags));
break;
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++) {
coffset = sc->sc_ranges[i].coffset;
cend = coffset + sc->sc_ranges[i].size - 1;
@ -253,7 +259,8 @@ central_alloc_resource(device_t bus, device_t child, int type, int *rid,
res = bus_generic_alloc_resource(bus, child,
type, rid, phys + start, phys + end,
count, flags);
rle->res = res;
if (!passthrough)
rle->res = res;
break;
}
}
@ -264,25 +271,13 @@ central_alloc_resource(device_t bus, device_t child, int type, int *rid,
return (res);
}
static int
central_release_resource(device_t bus, device_t child, int type, int rid,
struct resource *r)
static struct resource_list *
central_get_resource_list(device_t bus, device_t child)
{
struct resource_list_entry *rle;
struct central_devinfo *cdi;
int error;
error = bus_generic_release_resource(bus, child, type, rid, r);
if (error != 0)
return (error);
cdi = device_get_ivars(child);
rle = resource_list_find(&cdi->cdi_rl, type, rid);
if (rle == NULL)
panic("%s: can't find resource", __func__);
if (rle->res == NULL)
panic("%s: resource entry is not busy", __func__);
rle->res = NULL;
return (error);
return (&cdi->cdi_rl);
}
static const char *