struct cxl_decoder *cxld;
if (is_cxl_endpoint(port)) {
- cxld = cxl_endpoint_decoder_alloc(port);
- if (IS_ERR(cxld)) {
+ struct cxl_endpoint_decoder *cxled;
+
+ cxled = cxl_endpoint_decoder_alloc(port);
+ if (IS_ERR(cxled)) {
dev_warn(&port->dev,
"Failed to allocate the decoder\n");
- return PTR_ERR(cxld);
+ return PTR_ERR(cxled);
}
+ cxld = &cxled->cxld;
} else {
struct cxl_switch_decoder *cxlsd;
put_device(&port->dev);
}
-static void cxl_decoder_release(struct device *dev)
+static void cxl_endpoint_decoder_release(struct device *dev)
{
- struct cxl_decoder *cxld = to_cxl_decoder(dev);
+ struct cxl_endpoint_decoder *cxled = to_cxl_endpoint_decoder(dev);
- __cxl_decoder_release(cxld);
- kfree(cxld);
+ __cxl_decoder_release(&cxled->cxld);
+ kfree(cxled);
}
static void cxl_switch_decoder_release(struct device *dev)
static const struct device_type cxl_decoder_endpoint_type = {
.name = "cxl_decoder_endpoint",
- .release = cxl_decoder_release,
+ .release = cxl_endpoint_decoder_release,
.groups = cxl_decoder_endpoint_attribute_groups,
};
}
EXPORT_SYMBOL_NS_GPL(to_cxl_decoder, CXL);
+struct cxl_endpoint_decoder *to_cxl_endpoint_decoder(struct device *dev)
+{
+ if (dev_WARN_ONCE(dev, !is_endpoint_decoder(dev),
+ "not a cxl_endpoint_decoder device\n"))
+ return NULL;
+ return container_of(dev, struct cxl_endpoint_decoder, cxld.dev);
+}
+EXPORT_SYMBOL_NS_GPL(to_cxl_endpoint_decoder, CXL);
+
static struct cxl_switch_decoder *to_cxl_switch_decoder(struct device *dev)
{
if (dev_WARN_ONCE(dev, !is_switch_decoder(dev),
*
* Return: A new cxl decoder to be registered by cxl_decoder_add()
*/
-struct cxl_decoder *cxl_endpoint_decoder_alloc(struct cxl_port *port)
+struct cxl_endpoint_decoder *cxl_endpoint_decoder_alloc(struct cxl_port *port)
{
+ struct cxl_endpoint_decoder *cxled;
struct cxl_decoder *cxld;
int rc;
if (!is_cxl_endpoint(port))
return ERR_PTR(-EINVAL);
- cxld = kzalloc(sizeof(*cxld), GFP_KERNEL);
- if (!cxld)
+ cxled = kzalloc(sizeof(*cxled), GFP_KERNEL);
+ if (!cxled)
return ERR_PTR(-ENOMEM);
+ cxld = &cxled->cxld;
rc = cxl_decoder_init(port, cxld);
if (rc) {
- kfree(cxld);
+ kfree(cxled);
return ERR_PTR(rc);
}
cxld->dev.type = &cxl_decoder_endpoint_type;
- return cxld;
+ return cxled;
}
EXPORT_SYMBOL_NS_GPL(cxl_endpoint_decoder_alloc, CXL);
unsigned long flags;
};
+/**
+ * struct cxl_endpoint_decoder - Endpoint / SPA to DPA decoder
+ * @cxld: base cxl_decoder_object
+ * @dpa_res: actively claimed DPA span of this decoder
+ * @skip: offset into @dpa_res where @cxld.hpa_range maps
+ */
+struct cxl_endpoint_decoder {
+ struct cxl_decoder cxld;
+ struct resource *dpa_res;
+ resource_size_t skip;
+};
+
/**
* struct cxl_switch_decoder - Switch specific CXL HDM Decoder
* @cxld: base cxl_decoder object
struct cxl_decoder *to_cxl_decoder(struct device *dev);
struct cxl_root_decoder *to_cxl_root_decoder(struct device *dev);
+struct cxl_endpoint_decoder *to_cxl_endpoint_decoder(struct device *dev);
bool is_root_decoder(struct device *dev);
bool is_endpoint_decoder(struct device *dev);
struct cxl_root_decoder *cxl_root_decoder_alloc(struct cxl_port *port,
struct cxl_switch_decoder *cxl_switch_decoder_alloc(struct cxl_port *port,
unsigned int nr_targets);
int cxl_decoder_add(struct cxl_decoder *cxld, int *target_map);
-struct cxl_decoder *cxl_endpoint_decoder_alloc(struct cxl_port *port);
+struct cxl_endpoint_decoder *cxl_endpoint_decoder_alloc(struct cxl_port *port);
int cxl_decoder_add_locked(struct cxl_decoder *cxld, int *target_map);
int cxl_decoder_autoremove(struct device *host, struct cxl_decoder *cxld);
int cxl_endpoint_autoremove(struct cxl_memdev *cxlmd, struct cxl_port *endpoint);