Changeset 1d758fc in mainline for uspace/lib/usbhost/include/usb/host/bus.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/bus.h (modified) (1 diff)

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

@@ -153 +153 @@
 int bus_device_offline(device_t *);
 
-int bus_device_send_batch(device_t *, usb_target_t,
-    usb_direction_t direction, char *, size_t, uint64_t,
-    usbhc_iface_transfer_callback_t, void *, const char *);
+/**
+ * A proforma to USB transfer batch. As opposed to transfer batch, which is
+ * supposed to be a dynamic structrure, this one is static and descriptive only.
+ * Its fields are copied to the final batch.
+ */
+typedef struct transfer_request {
+        usb_target_t target;
+        usb_direction_t dir;
+
+        dma_buffer_t buffer;
+        size_t offset, size;
+        uint64_t setup;
+
+        usbhc_iface_transfer_callback_t on_complete;
+        void *arg;
+
+        const char *name;
+} transfer_request_t;
+
+int bus_issue_transfer(device_t *, const transfer_request_t *);
 
 errno_t bus_device_send_batch_sync(device_t *, usb_target_t,