Changeset 548c123 in mainline for uspace/drv/bus/usb/xhci/trb_ring.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/trb_ring.h (modified) (1 diff)

uspace/drv/bus/usb/xhci/trb_ring.h

@@ -72 +72 @@
 int xhci_trb_ring_init(xhci_trb_ring_t *, xhci_hc_t *);
 int xhci_trb_ring_fini(xhci_trb_ring_t *);
-int xhci_trb_ring_enqueue(xhci_trb_ring_t *, xhci_trb_t *);
+int xhci_trb_ring_enqueue(xhci_trb_ring_t *, xhci_trb_t *, uintptr_t *);
 
 /**