Changeset 35c37fc in mainline for uspace/drv/bus/usb/ehci/ehci_bus.h

Timestamp:

2018-01-05T20:15:08Z (6 years ago)

Author:

Ondřej Hlavatý <aearsis@…>

Branches:

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

Children:

9e5b162

Parents:

b60944b

git-author:

Ondřej Hlavatý <aearsis@…> (2018-01-05 16:11:04)

git-committer:

Ondřej Hlavatý <aearsis@…> (2018-01-05 20:15:08)

Message:

ehci: refactor to dma_buffers

One big hidden thing was refactored - now TDs are allocated in one
buffer together with setup and data buffers themselves. This reduces the
number of allocated pages per transfer to minimum.

File:

• uspace/drv/bus/usb/ehci/ehci_bus.h (modified) (2 diffs)

uspace/drv/bus/usb/ehci/ehci_bus.h

@@ -40 +40 @@
 #include <usb/host/usb2_bus.h>
 #include <usb/host/endpoint.h>
+#include <usb/host/dma_buffer.h>
 
 #include "hw_struct/queue_head.h"
@@ -48 +49 @@
         endpoint_t base;
 
-        /** EHCI endpoint descriptor */
+        /** EHCI endpoint descriptor, backed by dma_buffer */
         qh_t *qh;
+        
+        dma_buffer_t dma_buffer;
         /** Linked list used by driver software */
         link_t link;