| 1 | /*
|
|---|
| 2 | * Copyright (c) 2013 Jan Vesely
|
|---|
| 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 | /** @addtogroup drvusbehci
|
|---|
| 29 | * @{
|
|---|
| 30 | */
|
|---|
| 31 | /** @file
|
|---|
| 32 | * @brief EHCI driver
|
|---|
| 33 | */
|
|---|
| 34 |
|
|---|
| 35 | #include <assert.h>
|
|---|
| 36 | #include <usb/usb.h>
|
|---|
| 37 | #include <mem.h>
|
|---|
| 38 | #include <macros.h>
|
|---|
| 39 |
|
|---|
| 40 | #include "mem_access.h"
|
|---|
| 41 | #include "queue_head.h"
|
|---|
| 42 |
|
|---|
| 43 | static const uint32_t speed[] = {
|
|---|
| 44 | [USB_SPEED_LOW] = QH_EP_CHAR_EPS_LS,
|
|---|
| 45 | [USB_SPEED_FULL] = QH_EP_CHAR_EPS_FS,
|
|---|
| 46 | [USB_SPEED_HIGH] = QH_EP_CHAR_EPS_HS,
|
|---|
| 47 | };
|
|---|
| 48 |
|
|---|
| 49 | void qh_init(qh_t *instance, const endpoint_t *ep)
|
|---|
| 50 | {
|
|---|
| 51 | assert(instance);
|
|---|
| 52 | memset(instance, 0, sizeof(*instance));
|
|---|
| 53 |
|
|---|
| 54 | EHCI_MEM32_WR(instance->horizontal, LINK_POINTER_TERM);
|
|---|
| 55 | // EHCI_MEM32_WR(instance->current, LINK_POINTER_TERM);
|
|---|
| 56 | EHCI_MEM32_WR(instance->next, LINK_POINTER_TERM);
|
|---|
| 57 | EHCI_MEM32_WR(instance->alternate, LINK_POINTER_TERM);
|
|---|
| 58 | if (ep == NULL) {
|
|---|
| 59 | /* Mark as halted and list head,
|
|---|
| 60 | * used by endpoint lists as dummy */
|
|---|
| 61 | EHCI_MEM32_WR(instance->ep_char, QH_EP_CHAR_H_FLAG);
|
|---|
| 62 | EHCI_MEM32_WR(instance->status, QH_STATUS_HALTED_FLAG);
|
|---|
| 63 | return;
|
|---|
| 64 | }
|
|---|
| 65 | assert(ep->speed < ARRAY_SIZE(speed));
|
|---|
| 66 | EHCI_MEM32_WR(instance->ep_char,
|
|---|
| 67 | QH_EP_CHAR_ADDR_SET(ep->address) |
|
|---|
| 68 | QH_EP_CHAR_EP_SET(ep->endpoint) |
|
|---|
| 69 | speed[ep->speed] |
|
|---|
| 70 | QH_EP_CHAR_MAX_LENGTH_SET(ep->max_packet_size)
|
|---|
| 71 | );
|
|---|
| 72 | if (ep->transfer_type == USB_TRANSFER_CONTROL) {
|
|---|
| 73 | if (ep->speed != USB_SPEED_HIGH)
|
|---|
| 74 | EHCI_MEM32_SET(instance->ep_char, QH_EP_CHAR_C_FLAG);
|
|---|
| 75 | /* Let BULK and INT use queue head managed toggle,
|
|---|
| 76 | * CONTROL needs special toggle handling anyway */
|
|---|
| 77 | EHCI_MEM32_SET(instance->ep_char, QH_EP_CHAR_DTC_FLAG);
|
|---|
| 78 | }
|
|---|
| 79 | uint32_t ep_cap = QH_EP_CAP_C_MASK_SET(3 << 2) |
|
|---|
| 80 | QH_EP_CAP_MULTI_SET(ep->packets);
|
|---|
| 81 | if (ep->speed != USB_SPEED_HIGH) {
|
|---|
| 82 | ep_cap |=
|
|---|
| 83 | QH_EP_CAP_TT_PORT_SET(ep->tt.port) |
|
|---|
| 84 | QH_EP_CAP_TT_ADDR_SET(ep->tt.address);
|
|---|
| 85 | }
|
|---|
| 86 | if (ep->transfer_type == USB_TRANSFER_INTERRUPT) {
|
|---|
| 87 | ep_cap |= QH_EP_CAP_S_MASK_SET(3);
|
|---|
| 88 | }
|
|---|
| 89 |
|
|---|
| 90 | // TODO Figure out how to correctly use CMASK and SMASK for LS/FS
|
|---|
| 91 | // INT transfers. Current values are just guesses
|
|---|
| 92 | EHCI_MEM32_WR(instance->ep_cap, ep_cap);
|
|---|
| 93 |
|
|---|
| 94 | /* The rest of the fields are transfer working area, it should be ok to
|
|---|
| 95 | * leave it NULL */
|
|---|
| 96 | }
|
|---|
| 97 |
|
|---|
| 98 | /**
|
|---|
| 99 | * @}
|
|---|
| 100 | */
|
|---|
