u64 of_translate_dcr_address(struct device_node *dev,
unsigned int dcr_n,
unsigned int *out_stride)
{
struct device_node *dp;
u32 *p;
unsigned int stride;
u64 ret;
dp = find_dcr_parent(dev);
if (dp == NULL)
return OF_BAD_ADDR;
/* Stride is not properly defined yet, default to 0x10 for Axon */
p = (u32 *)get_property(dp, "dcr-mmio-stride", NULL);
stride = (p == NULL) ? 0x10 : *p;
/* XXX FIXME: Which property name is to use of the 2 following ? */
p = (u32 *)get_property(dp, "dcr-mmio-range", NULL);
if (p == NULL)
p = (u32 *)get_property(dp, "dcr-mmio-space", NULL);
if (p == NULL)
return OF_BAD_ADDR;
/* Maybe could do some better range checking here */
ret = of_translate_address(dp, p);
if (ret != OF_BAD_ADDR)
ret += (u64)(stride) * (u64)dcr_n;
if (out_stride)
*out_stride = stride;
return ret;
}
dcr_host_t dcr_map_generic(struct device_node *dev,
unsigned int dcr_n,
unsigned int dcr_c)
{
dcr_host_t host;
struct device_node *dp;
const char *prop;
host.type = DCR_HOST_INVALID;
dp = find_dcr_parent(dev);
if (dp == NULL)
return host;
prop = of_get_property(dp, "dcr-access-method", NULL);
pr_debug("dcr_map_generic(dcr-access-method = %s)\n", prop);
if (!strcmp(prop, "native")) {
host.type = DCR_HOST_NATIVE;
host.host.native = dcr_map_native(dev, dcr_n, dcr_c);
} else if (!strcmp(prop, "mmio")) {
host.type = DCR_HOST_MMIO;
host.host.mmio = dcr_map_mmio(dev, dcr_n, dcr_c);
}
of_node_put(dp);
return host;
}
