Changeset 548c123 in mainline for uspace/drv/bus/usb/xhci/hw_struct/trb.h

Timestamp:

2017-09-29T21:46:08Z (7 years ago)

Author:

Ondřej Hlavatý <aearsis@…>

Branches:

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

Children:

cc9ac7c

Parents:

ab5a0830

Message:

xhci commands: embed TRB into the command structure

Previously, a pointer into the TRB ring itself was contained. That could cause
problems, because the ring does not care and can move/deallocate segments, or
overwrite TRBs inside. To solve the original issue, xhci_trb_ring_enqueue can
now fill physical address of the TRB enqueued.

Also, this eliminates the need to track ownage of TRB.

File:

• uspace/drv/bus/usb/xhci/hw_struct/trb.h (modified) (1 diff)

uspace/drv/bus/usb/xhci/hw_struct/trb.h

@@ -138 +138 @@
     dst->status = src->status;
     dst->control = src->control;
+}
+
+static inline void xhci_trb_clean(xhci_trb_t *trb)
+{
+        memset(trb, 0, sizeof(*trb));
 }