Changeset e67c50a in mainline for uspace/drv/bus/usb/ohci/hw_struct/transfer_descriptor.h

Timestamp:

2018-02-01T21:13:23Z (7 years ago)

Author:

Ondřej Hlavatý <aearsis@…>

Branches:

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

Children:

64ce0c1

Parents:

3e6ff9a

git-author:

Ondřej Hlavatý <aearsis@…> (2018-02-01 21:13:22)

git-committer:

Ondřej Hlavatý <aearsis@…> (2018-02-01 21:13:23)

Message:

ohci: use dma memory responsibly

Instead of leaving arbitrary TD behind to be used by next transfer,
prepare two of them in endpoint and use them in a cyclic manner. This
reduces the number of pages allocated per transfer to one.

File:

• uspace/drv/bus/usb/ohci/hw_struct/transfer_descriptor.h (modified) (1 diff)

uspace/drv/bus/usb/ohci/hw_struct/transfer_descriptor.h

@@ -92 +92 @@
 } __attribute__((packed)) td_t;
 
-void td_init(td_t *instance, const td_t *next,
-    usb_direction_t dir, const void *buffer, size_t size, int toggle);
+void td_init(td_t *, const td_t *, usb_direction_t, const void *, size_t, int);
+void td_set_next(td_t *, const td_t *);
 
 /**