| 1 | /*
|
|---|
| 2 | * Copyright (c) 2017 Michal Staruch
|
|---|
| 3 | * All rights reserved.
|
|---|
| 4 | *
|
|---|
| 5 | * Redistribution and use in source and binary forms, with or without
|
|---|
| 6 | * modification, are permitted provided that the following conditions
|
|---|
| 7 | * are met:
|
|---|
| 8 | *
|
|---|
| 9 | * - Redistributions of source code must retain the above copyright
|
|---|
| 10 | * notice, this list of conditions and the following disclaimer.
|
|---|
| 11 | * - Redistributions in binary form must reproduce the above copyright
|
|---|
| 12 | * notice, this list of conditions and the following disclaimer in the
|
|---|
| 13 | * documentation and/or other materials provided with the distribution.
|
|---|
| 14 | * - The name of the author may not be used to endorse or promote products
|
|---|
| 15 | * derived from this software without specific prior written permission.
|
|---|
| 16 | *
|
|---|
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|---|
| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|---|
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|---|
| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|---|
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|---|
| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|---|
| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|---|
| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|---|
| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|---|
| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|---|
| 27 | */
|
|---|
| 28 |
|
|---|
| 29 | /** @addtogroup drvusbxhci
|
|---|
| 30 | * @{
|
|---|
| 31 | */
|
|---|
| 32 | /** @file
|
|---|
| 33 | * @brief The host controller transfer ring management
|
|---|
| 34 | */
|
|---|
| 35 |
|
|---|
| 36 | #include "hc.h"
|
|---|
| 37 | #include "trb_ring.h"
|
|---|
| 38 |
|
|---|
| 39 | typedef struct {
|
|---|
| 40 | link_t link;
|
|---|
| 41 |
|
|---|
| 42 | uintptr_t interrupt_trb_phys;
|
|---|
| 43 | uint8_t direction;
|
|---|
| 44 |
|
|---|
| 45 | usb_transfer_batch_t* batch;
|
|---|
| 46 |
|
|---|
| 47 | size_t completed_size; /* Number of successfully transferred bytes. */
|
|---|
| 48 | size_t scheduled_size; /* Number of bytes scheduled for transfer. */
|
|---|
| 49 | list_t active_blocks; /* List of data blocks transferred right now. */
|
|---|
| 50 | } xhci_transfer_t;
|
|---|
| 51 |
|
|---|
| 52 | typedef struct {
|
|---|
| 53 | link_t link;
|
|---|
| 54 |
|
|---|
| 55 | uintptr_t buffer; /* Physical address of the buffer start. */
|
|---|
| 56 | size_t total_size; /* Total size available in the block. */
|
|---|
| 57 | size_t filled_size; /* Size of the data in the block. */
|
|---|
| 58 |
|
|---|
| 59 | xhci_transfer_t* transfer; /* Current transfer or NULL. */
|
|---|
| 60 | } xhci_transfer_block_t;
|
|---|
| 61 |
|
|---|
| 62 | int xhci_init_transfers(xhci_hc_t*);
|
|---|
| 63 | void xhci_fini_transfers(xhci_hc_t*);
|
|---|
| 64 | xhci_transfer_t* xhci_transfer_alloc(usb_transfer_batch_t*);
|
|---|
| 65 | void xhci_transfer_fini(xhci_transfer_t*);
|
|---|
| 66 | int xhci_schedule_control_transfer(xhci_hc_t*, usb_transfer_batch_t*);
|
|---|
| 67 | int xhci_schedule_bulk_transfer(xhci_hc_t*, usb_transfer_batch_t*);
|
|---|
| 68 | int xhci_handle_transfer_event(xhci_hc_t*, xhci_trb_t*);
|
|---|
| 69 |
|
|---|
| 70 | xhci_transfer_block_t* xhci_transfer_block_alloc(size_t);
|
|---|
| 71 | void xhci_transfer_block_fini(xhci_transfer_block_t*);
|
|---|
| 72 | int xhci_dequeue_transfer_block(xhci_hc_t*, size_t, xhci_transfer_block_t**);
|
|---|
| 73 | int xhci_free_transfer_block(xhci_hc_t*, xhci_transfer_block_t*);
|
|---|
| 74 | int xhci_schedule_transfer_block(xhci_hc_t*, xhci_transfer_block_t*);
|
|---|
