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e443b333 AS |
1 | /* |
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 */ | |
8e22978c | 23 | struct ci_hw_td { |
e443b333 AS |
24 | /* 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) | |
a9c17430 | 43 | } __attribute__ ((packed, aligned(4))); |
e443b333 AS |
44 | |
45 | /* DMA layout of queue heads */ | |
8e22978c | 46 | struct ci_hw_qh { |
e443b333 AS |
47 | /* 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) | |
e4ce4ecd | 53 | #define QH_ISO_MULT(x) ((x >> 11) & 0x03) |
e443b333 AS |
54 | /* 1 */ |
55 | u32 curr; | |
56 | /* 2 - 8 */ | |
8e22978c | 57 | struct ci_hw_td td; |
e443b333 AS |
58 | /* 9 */ |
59 | u32 RESERVED; | |
60 | struct usb_ctrlrequest setup; | |
a9c17430 | 61 | } __attribute__ ((packed, aligned(4))); |
e443b333 | 62 | |
cc9e6c49 MG |
63 | struct td_node { |
64 | struct list_head td; | |
65 | dma_addr_t dma; | |
8e22978c | 66 | struct ci_hw_td *ptr; |
cc9e6c49 MG |
67 | }; |
68 | ||
551a8ac6 | 69 | /** |
8e22978c | 70 | * struct ci_hw_req - usb request representation |
551a8ac6 | 71 | * @req: request structure for gadget drivers |
551a8ac6 AS |
72 | * @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 | */ | |
8e22978c | 78 | struct ci_hw_req { |
551a8ac6 | 79 | struct usb_request req; |
551a8ac6 | 80 | struct list_head queue; |
cc9e6c49 | 81 | struct list_head tds; |
e443b333 AS |
82 | }; |
83 | ||
84 | #ifdef CONFIG_USB_CHIPIDEA_UDC | |
5f36e231 | 85 | |
8e22978c | 86 | int ci_hdrc_gadget_init(struct ci_hdrc *ci); |
3f124d23 | 87 | void ci_hdrc_gadget_destroy(struct ci_hdrc *ci); |
5f36e231 | 88 | |
e443b333 | 89 | #else |
e443b333 | 90 | |
8e22978c | 91 | static inline int ci_hdrc_gadget_init(struct ci_hdrc *ci) |
e443b333 | 92 | { |
5f36e231 | 93 | return -ENXIO; |
e443b333 AS |
94 | } |
95 | ||
3f124d23 PC |
96 | static inline void ci_hdrc_gadget_destroy(struct ci_hdrc *ci) |
97 | { | |
98 | ||
99 | } | |
100 | ||
e443b333 AS |
101 | #endif |
102 | ||
103 | #endif /* __DRIVERS_USB_CHIPIDEA_UDC_H */ |