Changeset 894f58c in mainline

Timestamp:

2017-10-23T23:39:36Z (7 years ago)

Author:

Michal Staruch <salmelu@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

56db65d

Parents:

ec700c7

Message:

Stub for freeing secondary stream arrays

File:

• uspace/drv/bus/usb/xhci/endpoint.c (modified) (2 diffs)

uspace/drv/bus/usb/xhci/endpoint.c

@@ -79 +79 @@
 }
 
+static bool primary_stream_ctx_has_secondary_array(xhci_stream_ctx_t *primary_ctx) {
+        /* Section 6.2.4.1, SCT values */
+        return XHCI_STREAM_SCT(*primary_ctx) >= 2;
+}
+
+static size_t secondary_stream_ctx_array_size(xhci_stream_ctx_t *primary_ctx) {
+        if (XHCI_STREAM_SCT(*primary_ctx) < 2) return 0;
+        return 2 << XHCI_STREAM_SCT(*primary_ctx);
+}
+
 int xhci_endpoint_alloc_transfer_ds(xhci_endpoint_t *xhci_ep)
 {
@@ -114 +124 @@
                     xhci_ep->base.target.address, xhci_ep->base.target.endpoint);
 
-                // TODO: What about secondaries?
+                // maybe check if LSA, then skip?
+                for (size_t index = 0; index < primary_stream_ctx_array_size(xhci_ep); ++index) {
+                        xhci_stream_ctx_t *primary_ctx = xhci_ep->primary_stream_ctx_array + index;
+                        if (primary_stream_ctx_has_secondary_array(primary_ctx)) {
+                                // uintptr_t phys = XHCI_STREAM_DEQ_PTR(*primary_ctx);
+                                /* size_t size = */ secondary_stream_ctx_array_size(primary_ctx);
+                                // TODO: somehow map the address to virtual and free the secondary array
+                        }
+                }
                 free32(xhci_ep->primary_stream_ctx_array);
         } else {