1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
|
/*
* ci13xxx_udc.h - structures, registers, and macros MIPS USB IP core
*
* Copyright (C) 2008 Chipidea - MIPS Technologies, Inc. All rights reserved.
*
* Author: David Lopo
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* Description: MIPS USB IP core family device controller
* Structures, registers and logging macros
*/
#ifndef _CI13XXX_h_
#define _CI13XXX_h_
/******************************************************************************
* DEFINE
*****************************************************************************/
#define CI13XXX_PAGE_SIZE 4096ul /* page size for TD's */
#define ENDPT_MAX (32)
#define CTRL_PAYLOAD_MAX (64)
#define RX (0) /* similar to USB_DIR_OUT but can be used as an index */
#define TX (1) /* similar to USB_DIR_IN but can be used as an index */
/******************************************************************************
* STRUCTURES
*****************************************************************************/
/* DMA layout of transfer descriptors */
struct ci13xxx_td {
/* 0 */
u32 next;
#define TD_TERMINATE BIT(0)
/* 1 */
u32 token;
#define TD_STATUS (0x00FFUL << 0)
#define TD_STATUS_TR_ERR BIT(3)
#define TD_STATUS_DT_ERR BIT(5)
#define TD_STATUS_HALTED BIT(6)
#define TD_STATUS_ACTIVE BIT(7)
#define TD_MULTO (0x0003UL << 10)
#define TD_IOC BIT(15)
#define TD_TOTAL_BYTES (0x7FFFUL << 16)
/* 2 */
u32 page[5];
#define TD_CURR_OFFSET (0x0FFFUL << 0)
#define TD_FRAME_NUM (0x07FFUL << 0)
#define TD_RESERVED_MASK (0x0FFFUL << 0)
} __attribute__ ((packed));
/* DMA layout of queue heads */
struct ci13xxx_qh {
/* 0 */
u32 cap;
#define QH_IOS BIT(15)
#define QH_MAX_PKT (0x07FFUL << 16)
#define QH_ZLT BIT(29)
#define QH_MULT (0x0003UL << 30)
/* 1 */
u32 curr;
/* 2 - 8 */
struct ci13xxx_td td;
/* 9 */
u32 RESERVED;
struct usb_ctrlrequest setup;
} __attribute__ ((packed));
/* Extension of usb_request */
struct ci13xxx_req {
struct usb_request req;
unsigned map;
struct list_head queue;
struct ci13xxx_td *ptr;
dma_addr_t dma;
};
/* Extension of usb_ep */
struct ci13xxx_ep {
struct usb_ep ep;
const struct usb_endpoint_descriptor *desc;
u8 dir;
u8 num;
u8 type;
char name[16];
struct {
struct list_head queue;
struct ci13xxx_qh *ptr;
dma_addr_t dma;
} qh;
int wedge;
/* global resources */
spinlock_t *lock;
struct device *device;
struct dma_pool *td_pool;
};
struct ci13xxx;
struct ci13xxx_udc_driver {
const char *name;
unsigned long flags;
#define CI13XXX_REGS_SHARED BIT(0)
#define CI13XXX_REQUIRE_TRANSCEIVER BIT(1)
#define CI13XXX_PULLUP_ON_VBUS BIT(2)
#define CI13XXX_DISABLE_STREAMING BIT(3)
#define CI13XXX_CONTROLLER_RESET_EVENT 0
#define CI13XXX_CONTROLLER_STOPPED_EVENT 1
void (*notify_event) (struct ci13xxx *udc, unsigned event);
};
/* CI13XXX UDC descriptor & global resources */
struct ci13xxx {
spinlock_t *lock; /* ctrl register bank access */
void __iomem *regs; /* registers address space */
struct dma_pool *qh_pool; /* DMA pool for queue heads */
struct dma_pool *td_pool; /* DMA pool for transfer descs */
struct usb_request *status; /* ep0 status request */
struct usb_gadget gadget; /* USB slave device */
struct ci13xxx_ep ci13xxx_ep[ENDPT_MAX]; /* extended endpts */
u32 ep0_dir; /* ep0 direction */
#define ep0out ci13xxx_ep[0]
#define ep0in ci13xxx_ep[16]
struct usb_gadget_driver *driver; /* 3rd party gadget driver */
struct ci13xxx_udc_driver *udc_driver; /* device controller driver */
int vbus_active; /* is VBUS active */
struct otg_transceiver *transceiver; /* Transceiver struct */
};
/******************************************************************************
* REGISTERS
*****************************************************************************/
/* register size */
#define REG_BITS (32)
/* HCCPARAMS */
#define HCCPARAMS_LEN BIT(17)
/* DCCPARAMS */
#define DCCPARAMS_DEN (0x1F << 0)
#define DCCPARAMS_DC BIT(7)
/* TESTMODE */
#define TESTMODE_FORCE BIT(0)
/* USBCMD */
#define USBCMD_RS BIT(0)
#define USBCMD_RST BIT(1)
#define USBCMD_SUTW BIT(13)
/* USBSTS & USBINTR */
#define USBi_UI BIT(0)
#define USBi_UEI BIT(1)
#define USBi_PCI BIT(2)
#define USBi_URI BIT(6)
#define USBi_SLI BIT(8)
/* DEVICEADDR */
#define DEVICEADDR_USBADRA BIT(24)
#define DEVICEADDR_USBADR (0x7FUL << 25)
/* PORTSC */
#define PORTSC_SUSP BIT(7)
#define PORTSC_HSP BIT(9)
#define PORTSC_PTC (0x0FUL << 16)
/* DEVLC */
#define DEVLC_PSPD (0x03UL << 25)
#define DEVLC_PSPD_HS (0x02UL << 25)
/* USBMODE */
#define USBMODE_CM (0x03UL << 0)
#define USBMODE_CM_IDLE (0x00UL << 0)
#define USBMODE_CM_DEVICE (0x02UL << 0)
#define USBMODE_CM_HOST (0x03UL << 0)
#define USBMODE_SLOM BIT(3)
#define USBMODE_SDIS BIT(4)
/* ENDPTCTRL */
#define ENDPTCTRL_RXS BIT(0)
#define ENDPTCTRL_RXT (0x03UL << 2)
#define ENDPTCTRL_RXR BIT(6) /* reserved for port 0 */
#define ENDPTCTRL_RXE BIT(7)
#define ENDPTCTRL_TXS BIT(16)
#define ENDPTCTRL_TXT (0x03UL << 18)
#define ENDPTCTRL_TXR BIT(22) /* reserved for port 0 */
#define ENDPTCTRL_TXE BIT(23)
/******************************************************************************
* LOGGING
*****************************************************************************/
#define ci13xxx_printk(level, format, args...) \
do { \
if (_udc == NULL) \
printk(level "[%s] " format "\n", __func__, ## args); \
else \
dev_printk(level, _udc->gadget.dev.parent, \
"[%s] " format "\n", __func__, ## args); \
} while (0)
#define err(format, args...) ci13xxx_printk(KERN_ERR, format, ## args)
#define warn(format, args...) ci13xxx_printk(KERN_WARNING, format, ## args)
#define info(format, args...) ci13xxx_printk(KERN_INFO, format, ## args)
#ifdef TRACE
#define trace(format, args...) ci13xxx_printk(KERN_DEBUG, format, ## args)
#define dbg_trace(format, args...) dev_dbg(dev, format, ##args)
#else
#define trace(format, args...) do {} while (0)
#define dbg_trace(format, args...) do {} while (0)
#endif
#endif /* _CI13XXX_h_ */
|
