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
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
|
/*
* Toshiba TC86C001 ("Goku-S") USB Device Controller driver
*
* Copyright (C) 2000-2002 Lineo
* by Stuart Lynne, Tom Rushworth, and Bruce Balden
* Copyright (C) 2002 Toshiba Corporation
* Copyright (C) 2003 MontaVista Software (source@mvista.com)
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
* warranty of any kind, whether express or implied.
*/
/*
* PCI BAR 0 points to these registers.
*/
struct goku_udc_regs {
/* irq management */
u32 int_status; /* 0x000 */
u32 int_enable;
#define INT_SUSPEND 0x00001 /* or resume */
#define INT_USBRESET 0x00002
#define INT_ENDPOINT0 0x00004
#define INT_SETUP 0x00008
#define INT_STATUS 0x00010
#define INT_STATUSNAK 0x00020
#define INT_EPxDATASET(n) (0x00020 << (n)) /* 0 < n < 4 */
# define INT_EP1DATASET 0x00040
# define INT_EP2DATASET 0x00080
# define INT_EP3DATASET 0x00100
#define INT_EPnNAK(n) (0x00100 < (n)) /* 0 < n < 4 */
# define INT_EP1NAK 0x00200
# define INT_EP2NAK 0x00400
# define INT_EP3NAK 0x00800
#define INT_SOF 0x01000
#define INT_ERR 0x02000
#define INT_MSTWRSET 0x04000
#define INT_MSTWREND 0x08000
#define INT_MSTWRTMOUT 0x10000
#define INT_MSTRDEND 0x20000
#define INT_SYSERROR 0x40000
#define INT_PWRDETECT 0x80000
#define INT_DEVWIDE \
(INT_PWRDETECT|INT_SYSERROR/*|INT_ERR*/|INT_USBRESET|INT_SUSPEND)
#define INT_EP0 \
(INT_SETUP|INT_ENDPOINT0/*|INT_STATUS*/|INT_STATUSNAK)
u32 dma_master;
#define MST_EOPB_DIS 0x0800
#define MST_EOPB_ENA 0x0400
#define MST_TIMEOUT_DIS 0x0200
#define MST_TIMEOUT_ENA 0x0100
#define MST_RD_EOPB 0x0080 /* write-only */
#define MST_RD_RESET 0x0040
#define MST_WR_RESET 0x0020
#define MST_RD_ENA 0x0004 /* 1:start, 0:ignore */
#define MST_WR_ENA 0x0002 /* 1:start, 0:ignore */
#define MST_CONNECTION 0x0001 /* 0 for ep1out/ep2in */
#define MST_R_BITS (MST_EOPB_DIS|MST_EOPB_ENA \
|MST_RD_ENA|MST_RD_RESET)
#define MST_W_BITS (MST_TIMEOUT_DIS|MST_TIMEOUT_ENA \
|MST_WR_ENA|MST_WR_RESET)
#define MST_RW_BITS (MST_R_BITS|MST_W_BITS \
|MST_CONNECTION)
/* these values assume (dma_master & MST_CONNECTION) == 0 */
#define UDC_MSTWR_ENDPOINT 1
#define UDC_MSTRD_ENDPOINT 2
/* dma master write */
u32 out_dma_start;
u32 out_dma_end;
u32 out_dma_current;
/* dma master read */
u32 in_dma_start;
u32 in_dma_end;
u32 in_dma_current;
u32 power_detect;
#define PW_DETECT 0x04
#define PW_RESETB 0x02
#define PW_PULLUP 0x01
u8 _reserved0 [0x1d8];
/* endpoint registers */
u32 ep_fifo [4]; /* 0x200 */
u8 _reserved1 [0x10];
u32 ep_mode [4]; /* only 1-3 valid */
u8 _reserved2 [0x10];
u32 ep_status [4];
#define EPxSTATUS_TOGGLE 0x40
#define EPxSTATUS_SUSPEND 0x20
#define EPxSTATUS_EP_MASK (0x07<<2)
# define EPxSTATUS_EP_READY (0<<2)
# define EPxSTATUS_EP_DATAIN (1<<2)
# define EPxSTATUS_EP_FULL (2<<2)
# define EPxSTATUS_EP_TX_ERR (3<<2)
# define EPxSTATUS_EP_RX_ERR (4<<2)
# define EPxSTATUS_EP_BUSY (5<<2)
# define EPxSTATUS_EP_STALL (6<<2)
# define EPxSTATUS_EP_INVALID (7<<2)
#define EPxSTATUS_FIFO_DISABLE 0x02
#define EPxSTATUS_STAGE_ERROR 0x01
u8 _reserved3 [0x10];
u32 EPxSizeLA[4];
#define PACKET_ACTIVE (1<<7)
#define DATASIZE 0x7f
u8 _reserved3a [0x10];
u32 EPxSizeLB[4]; /* only 1,2 valid */
u8 _reserved3b [0x10];
u32 EPxSizeHA[4]; /* only 1-3 valid */
u8 _reserved3c [0x10];
u32 EPxSizeHB[4]; /* only 1,2 valid */
u8 _reserved4[0x30];
/* SETUP packet contents */
u32 bRequestType; /* 0x300 */
u32 bRequest;
u32 wValueL;
u32 wValueH;
u32 wIndexL;
u32 wIndexH;
u32 wLengthL;
u32 wLengthH;
/* command interaction/handshaking */
u32 SetupRecv; /* 0x320 */
u32 CurrConfig;
u32 StdRequest;
u32 Request;
u32 DataSet;
#define DATASET_A(epnum) (1<<(2*(epnum)))
#define DATASET_B(epnum) (2<<(2*(epnum)))
#define DATASET_AB(epnum) (3<<(2*(epnum)))
u8 _reserved5[4];
u32 UsbState;
#define USBSTATE_CONFIGURED 0x04
#define USBSTATE_ADDRESSED 0x02
#define USBSTATE_DEFAULT 0x01
u32 EOP;
u32 Command; /* 0x340 */
#define COMMAND_SETDATA0 2
#define COMMAND_RESET 3
#define COMMAND_STALL 4
#define COMMAND_INVALID 5
#define COMMAND_FIFO_DISABLE 7
#define COMMAND_FIFO_ENABLE 8
#define COMMAND_INIT_DESCRIPTOR 9
#define COMMAND_FIFO_CLEAR 10 /* also stall */
#define COMMAND_STALL_CLEAR 11
#define COMMAND_EP(n) ((n) << 4)
u32 EPxSingle;
u8 _reserved6[4];
u32 EPxBCS;
u8 _reserved7[8];
u32 IntControl;
#define ICONTROL_STATUSNAK 1
u8 _reserved8[4];
u32 reqmode; // 0x360 standard request mode, low 8 bits
#define G_REQMODE_SET_INTF (1<<7)
#define G_REQMODE_GET_INTF (1<<6)
#define G_REQMODE_SET_CONF (1<<5)
#define G_REQMODE_GET_CONF (1<<4)
#define G_REQMODE_GET_DESC (1<<3)
#define G_REQMODE_SET_FEAT (1<<2)
#define G_REQMODE_CLEAR_FEAT (1<<1)
#define G_REQMODE_GET_STATUS (1<<0)
u32 ReqMode;
u8 _reserved9[0x18];
u32 PortStatus; /* 0x380 */
u8 _reserved10[8];
u32 address;
u32 buff_test;
u8 _reserved11[4];
u32 UsbReady;
u8 _reserved12[4];
u32 SetDescStall; /* 0x3a0 */
u8 _reserved13[0x45c];
/* hardware could handle limited GET_DESCRIPTOR duties */
#define DESC_LEN 0x80
u32 descriptors[DESC_LEN]; /* 0x800 */
u8 _reserved14[0x600];
} __attribute__ ((packed));
#define MAX_FIFO_SIZE 64
#define MAX_EP0_SIZE 8 /* ep0 fifo is bigger, though */
/*-------------------------------------------------------------------------*/
/* DRIVER DATA STRUCTURES and UTILITIES */
struct goku_ep {
struct usb_ep ep;
struct goku_udc *dev;
unsigned long irqs;
unsigned num:8,
dma:1,
is_in:1,
stopped:1;
/* analogous to a host-side qh */
struct list_head queue;
const struct usb_endpoint_descriptor *desc;
u32 __iomem *reg_fifo;
u32 __iomem *reg_mode;
u32 __iomem *reg_status;
};
struct goku_request {
struct usb_request req;
struct list_head queue;
unsigned mapped:1;
};
enum ep0state {
EP0_DISCONNECT, /* no host */
EP0_IDLE, /* between STATUS ack and SETUP report */
EP0_IN, EP0_OUT, /* data stage */
EP0_STATUS, /* status stage */
EP0_STALL, /* data or status stages */
EP0_SUSPEND, /* usb suspend */
};
struct goku_udc {
/* each pci device provides one gadget, several endpoints */
struct usb_gadget gadget;
spinlock_t lock;
struct goku_ep ep[4];
struct usb_gadget_driver *driver;
enum ep0state ep0state;
unsigned got_irq:1,
got_region:1,
req_config:1,
configured:1,
enabled:1;
/* pci state used to access those endpoints */
struct pci_dev *pdev;
struct goku_udc_regs __iomem *regs;
u32 int_enable;
/* statistics... */
unsigned long irqs;
};
/*-------------------------------------------------------------------------*/
#define xprintk(dev,level,fmt,args...) \
printk(level "%s %s: " fmt , driver_name , \
pci_name(dev->pdev) , ## args)
#ifdef DEBUG
#define DBG(dev,fmt,args...) \
xprintk(dev , KERN_DEBUG , fmt , ## args)
#else
#define DBG(dev,fmt,args...) \
do { } while (0)
#endif /* DEBUG */
#ifdef VERBOSE
#define VDBG DBG
#else
#define VDBG(dev,fmt,args...) \
do { } while (0)
#endif /* VERBOSE */
#define ERROR(dev,fmt,args...) \
xprintk(dev , KERN_ERR , fmt , ## args)
#define WARN(dev,fmt,args...) \
xprintk(dev , KERN_WARNING , fmt , ## args)
#define INFO(dev,fmt,args...) \
xprintk(dev , KERN_INFO , fmt , ## args)
|
