Changeset 1d758fc in mainline for uspace/lib/usbhost/include/usb/host/usb_transfer_batch.h

Timestamp:

2018-02-12T10:11:47Z (6 years ago)

Author:

Ondřej Hlavatý <aearsis@…>

Branches:

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

Children:

5fe3f954

Parents:

2f762a7

git-author:

Ondřej Hlavatý <aearsis@…> (2018-02-05 03:28:50)

git-committer:

Ondřej Hlavatý <aearsis@…> (2018-02-12 10:11:47)

Message:

usb: rethinking DMA buffers

File:

• uspace/lib/usbhost/include/usb/host/usb_transfer_batch.h (modified) (3 diffs)

uspace/lib/usbhost/include/usb/host/usb_transfer_batch.h

@@ -70 +70 @@
         } setup;
 
+        /** DMA buffer with enforced policy */
+        dma_buffer_t dma_buffer;
+        /** Size of memory buffer */
+        size_t offset, size;
+
         /**
          * In case a bounce buffer is allocated, the original buffer must to be
          * stored to be filled after the IN transaction is finished.
          */
-        char *buffer;
-        /** Size of memory buffer */
-        size_t buffer_size;
-
-        /** DMA buffer with enforced policy */
-        dma_buffer_t dma_buffer;
+        char *original_buffer;
         bool is_bounced;
 
@@ -107 +107 @@
         usb_str_transfer_type_short((batch).ep->transfer_type), \
         usb_str_direction((batch).dir), \
-        (batch).buffer_size, (batch).ep->max_packet_size
+        (batch).size, (batch).ep->max_packet_size
 
 /** Wrapper for bus operation. */
@@ -115 +115 @@
 void usb_transfer_batch_init(usb_transfer_batch_t *, endpoint_t *);
 
+/** Buffer handling */
+bool usb_transfer_batch_bounce_required(usb_transfer_batch_t *);
 errno_t usb_transfer_batch_bounce(usb_transfer_batch_t *);
-/** Buffer preparation */
-errno_t usb_transfer_batch_prepare_buffer(usb_transfer_batch_t *, char *);
 
 /** Batch finalization. */