Changeset 45c01a1 in mainline for uspace/drv/uhci-hcd/uhci_struct/transfer_descriptor.h

Timestamp:

2011-02-12T22:20:22Z (14 years ago)

Author:

Jan Vesely <jano.vesely@…>

Branches:

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

Children:

54d9058, bfe0eb5, d15809b4

Parents:

8f5b6561 (diff), 600733e (diff)
Note: this is a merge changeset, the changes displayed below correspond to the merge itself.
Use the (diff) links above to see all the changes relative to each parent.

Message:

hcd reworked, communication is sent in packet batches, improves performance and atomicity

File:

• uspace/drv/uhci-hcd/uhci_struct/transfer_descriptor.h (modified) (1 diff)

uspace/drv/uhci-hcd/uhci_struct/transfer_descriptor.h

@@ -93 +93 @@
 void transfer_descriptor_init(transfer_descriptor_t *instance,
     int error_count, size_t size, bool toggle, bool isochronous,
-    usb_target_t target, int pid, void *buffer);
+    usb_target_t target, int pid, void *buffer, transfer_descriptor_t * next);
 
 int transfer_descriptor_status(transfer_descriptor_t *instance);
+
+static inline size_t transfer_descriptor_actual_size(
+    transfer_descriptor_t *instance)
+{
+        assert(instance);
+        return
+            ((instance->status >> TD_STATUS_ACTLEN_POS) + 1) & TD_STATUS_ACTLEN_MASK;
+}
 
 static inline bool transfer_descriptor_is_active(