Changeset 63adb18 in mainline for uspace/drv/bus/usb/xhci/transfers.h

Timestamp:

2017-10-11T18:53:03Z (8 years ago)

Author:

Petr Manek <petr.manek@…>

Branches:

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

Children:

7e74911

Parents:

eaf5e86

Message:

Added transfer block data structure and dequeue mechanism.

File:

• uspace/drv/bus/usb/xhci/transfers.h (modified) (2 diffs)

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

@@ -44 +44 @@
 
         usb_transfer_batch_t* batch;
+
+        size_t completed_size;       /* Number of successfully transferred bytes. */
+        size_t scheduled_size;       /* Number of bytes scheduled for transfer. */
+        list_t active_blocks;        /* List of data blocks transferred right now. */
 } xhci_transfer_t;
+
+typedef struct {
+        link_t link;
+
+        uintptr_t buffer;            /* Physical address of the buffer start. */
+        size_t total_size;           /* Total size available in the block. */
+        size_t filled_size;          /* Size of the data in the block. */
+
+        xhci_transfer_t* transfer;   /* Current transfer or NULL. */
+} xhci_transfer_block_t;
 
 int xhci_init_transfers(xhci_hc_t*);
@@ -53 +67 @@
 int xhci_schedule_bulk_transfer(xhci_hc_t*, usb_transfer_batch_t*);
 int xhci_handle_transfer_event(xhci_hc_t*, xhci_trb_t*);
+
+xhci_transfer_block_t* xhci_transfer_block_alloc(size_t);
+void xhci_transfer_block_fini(xhci_transfer_block_t*);
+int xhci_dequeue_transfer_block(xhci_hc_t*, size_t, xhci_transfer_block_t**);
+int xhci_free_transfer_block(xhci_hc_t*, xhci_transfer_block_t*);
+int xhci_schedule_transfer_block(xhci_hc_t*, xhci_transfer_block_t*);