blob: e66df0020bd456aadf1a0a036ab8084a098d119d [file] [log] [blame]
Alexander Shishkine443b332012-05-11 17:25:46 +03001/*
2 * udc.h - ChipIdea UDC structures
3 *
4 * Copyright (C) 2008 Chipidea - MIPS Technologies, Inc. All rights reserved.
5 *
6 * Author: David Lopo
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
11 */
12
13#ifndef __DRIVERS_USB_CHIPIDEA_UDC_H
14#define __DRIVERS_USB_CHIPIDEA_UDC_H
15
16#include <linux/list.h>
17
18#define CTRL_PAYLOAD_MAX 64
19#define RX 0 /* similar to USB_DIR_OUT but can be used as an index */
20#define TX 1 /* similar to USB_DIR_IN but can be used as an index */
21
22/* DMA layout of transfer descriptors */
Alexander Shishkin8e229782013-06-24 14:46:36 +030023struct ci_hw_td {
Alexander Shishkine443b332012-05-11 17:25:46 +030024 /* 0 */
25 u32 next;
26#define TD_TERMINATE BIT(0)
27#define TD_ADDR_MASK (0xFFFFFFEUL << 5)
28 /* 1 */
29 u32 token;
30#define TD_STATUS (0x00FFUL << 0)
31#define TD_STATUS_TR_ERR BIT(3)
32#define TD_STATUS_DT_ERR BIT(5)
33#define TD_STATUS_HALTED BIT(6)
34#define TD_STATUS_ACTIVE BIT(7)
35#define TD_MULTO (0x0003UL << 10)
36#define TD_IOC BIT(15)
37#define TD_TOTAL_BYTES (0x7FFFUL << 16)
38 /* 2 */
39 u32 page[5];
40#define TD_CURR_OFFSET (0x0FFFUL << 0)
41#define TD_FRAME_NUM (0x07FFUL << 0)
42#define TD_RESERVED_MASK (0x0FFFUL << 0)
Michael Grzeschika9c17432013-04-04 13:13:46 +030043} __attribute__ ((packed, aligned(4)));
Alexander Shishkine443b332012-05-11 17:25:46 +030044
45/* DMA layout of queue heads */
Alexander Shishkin8e229782013-06-24 14:46:36 +030046struct ci_hw_qh {
Alexander Shishkine443b332012-05-11 17:25:46 +030047 /* 0 */
48 u32 cap;
49#define QH_IOS BIT(15)
50#define QH_MAX_PKT (0x07FFUL << 16)
51#define QH_ZLT BIT(29)
52#define QH_MULT (0x0003UL << 30)
Michael Grzeschike4ce4ec2013-06-13 17:59:47 +030053#define QH_ISO_MULT(x) ((x >> 11) & 0x03)
Alexander Shishkine443b332012-05-11 17:25:46 +030054 /* 1 */
55 u32 curr;
56 /* 2 - 8 */
Alexander Shishkin8e229782013-06-24 14:46:36 +030057 struct ci_hw_td td;
Alexander Shishkine443b332012-05-11 17:25:46 +030058 /* 9 */
59 u32 RESERVED;
60 struct usb_ctrlrequest setup;
Michael Grzeschika9c17432013-04-04 13:13:46 +030061} __attribute__ ((packed, aligned(4)));
Alexander Shishkine443b332012-05-11 17:25:46 +030062
Michael Grzeschikcc9e6c42013-06-13 17:59:53 +030063struct td_node {
64 struct list_head td;
65 dma_addr_t dma;
Alexander Shishkin8e229782013-06-24 14:46:36 +030066 struct ci_hw_td *ptr;
Michael Grzeschikcc9e6c42013-06-13 17:59:53 +030067};
68
Alexander Shishkin551a8ac2012-05-11 17:25:49 +030069/**
Alexander Shishkin8e229782013-06-24 14:46:36 +030070 * struct ci_hw_req - usb request representation
Alexander Shishkin551a8ac2012-05-11 17:25:49 +030071 * @req: request structure for gadget drivers
Alexander Shishkin551a8ac2012-05-11 17:25:49 +030072 * @queue: link to QH list
73 * @ptr: transfer descriptor for this request
74 * @dma: dma address for the transfer descriptor
75 * @zptr: transfer descriptor for the zero packet
76 * @zdma: dma address of the zero packet's transfer descriptor
77 */
Alexander Shishkin8e229782013-06-24 14:46:36 +030078struct ci_hw_req {
Alexander Shishkin551a8ac2012-05-11 17:25:49 +030079 struct usb_request req;
Alexander Shishkin551a8ac2012-05-11 17:25:49 +030080 struct list_head queue;
Michael Grzeschikcc9e6c42013-06-13 17:59:53 +030081 struct list_head tds;
Alexander Shishkine443b332012-05-11 17:25:46 +030082};
83
84#ifdef CONFIG_USB_CHIPIDEA_UDC
Alexander Shishkin5f36e232012-05-11 17:25:47 +030085
Alexander Shishkin8e229782013-06-24 14:46:36 +030086int ci_hdrc_gadget_init(struct ci_hdrc *ci);
Peter Chen3f124d22013-08-14 12:44:07 +030087void ci_hdrc_gadget_destroy(struct ci_hdrc *ci);
Alexander Shishkin5f36e232012-05-11 17:25:47 +030088
Alexander Shishkine443b332012-05-11 17:25:46 +030089#else
Alexander Shishkin5f36e232012-05-11 17:25:47 +030090
Alexander Shishkin8e229782013-06-24 14:46:36 +030091static inline int ci_hdrc_gadget_init(struct ci_hdrc *ci)
Alexander Shishkine443b332012-05-11 17:25:46 +030092{
Alexander Shishkin5f36e232012-05-11 17:25:47 +030093 return -ENXIO;
Alexander Shishkine443b332012-05-11 17:25:46 +030094}
95
Peter Chen3f124d22013-08-14 12:44:07 +030096static inline void ci_hdrc_gadget_destroy(struct ci_hdrc *ci)
97{
98
99}
100
Alexander Shishkine443b332012-05-11 17:25:46 +0300101#endif
102
103#endif /* __DRIVERS_USB_CHIPIDEA_UDC_H */