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
|
/**
* gadget.h - DesignWare USB3 DRD Gadget Header
*
* Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
*
* Authors: Felipe Balbi <balbi@ti.com>,
* Sebastian Andrzej Siewior <bigeasy@linutronix.de>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions, and the following disclaimer,
* without modification.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The names of the above-listed copyright holders may not be used
* to endorse or promote products derived from this software without
* specific prior written permission.
*
* ALTERNATIVELY, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2, as published by the Free
* Software Foundation.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef __DRIVERS_USB_DWC3_GADGET_H
#define __DRIVERS_USB_DWC3_GADGET_H
#include <linux/list.h>
#include <linux/usb/gadget.h>
#include "io.h"
struct dwc3;
#define to_dwc3_ep(ep) (container_of(ep, struct dwc3_ep, endpoint))
#define gadget_to_dwc(g) (container_of(g, struct dwc3, gadget))
/* DEPCFG parameter 1 */
#define DWC3_DEPCFG_INT_NUM(n) ((n) << 0)
#define DWC3_DEPCFG_XFER_COMPLETE_EN (1 << 8)
#define DWC3_DEPCFG_XFER_IN_PROGRESS_EN (1 << 9)
#define DWC3_DEPCFG_XFER_NOT_READY_EN (1 << 10)
#define DWC3_DEPCFG_FIFO_ERROR_EN (1 << 11)
#define DWC3_DEPCFG_STREAM_EVENT_EN (1 << 13)
#define DWC3_DEPCFG_BINTERVAL_M1(n) ((n) << 16)
#define DWC3_DEPCFG_STREAM_CAPABLE (1 << 24)
#define DWC3_DEPCFG_EP_NUMBER(n) ((n) << 25)
#define DWC3_DEPCFG_BULK_BASED (1 << 30)
#define DWC3_DEPCFG_FIFO_BASED (1 << 31)
/* DEPCFG parameter 0 */
#define DWC3_DEPCFG_EP_TYPE(n) ((n) << 1)
#define DWC3_DEPCFG_MAX_PACKET_SIZE(n) ((n) << 3)
#define DWC3_DEPCFG_FIFO_NUMBER(n) ((n) << 17)
#define DWC3_DEPCFG_BURST_SIZE(n) ((n) << 22)
#define DWC3_DEPCFG_DATA_SEQ_NUM(n) ((n) << 26)
#define DWC3_DEPCFG_IGN_SEQ_NUM (1 << 31)
/* DEPXFERCFG parameter 0 */
#define DWC3_DEPXFERCFG_NUM_XFER_RES(n) ((n) & 0xffff)
struct dwc3_gadget_ep_cmd_params {
u32 param2;
u32 param1;
u32 param0;
};
/* -------------------------------------------------------------------------- */
struct dwc3_request {
struct usb_request request;
struct list_head list;
struct dwc3_ep *dep;
u8 epnum;
struct dwc3_trb_hw *trb;
dma_addr_t trb_dma;
unsigned direction:1;
unsigned mapped:1;
unsigned queued:1;
};
#define to_dwc3_request(r) (container_of(r, struct dwc3_request, request))
static inline struct dwc3_request *next_request(struct list_head *list)
{
if (list_empty(list))
return NULL;
return list_first_entry(list, struct dwc3_request, list);
}
static inline void dwc3_gadget_move_request_queued(struct dwc3_request *req)
{
struct dwc3_ep *dep = req->dep;
req->queued = true;
list_move_tail(&req->list, &dep->req_queued);
}
int dwc3_gadget_init(struct dwc3 *dwc);
void dwc3_gadget_exit(struct dwc3 *dwc);
void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req,
int status);
void dwc3_ep0_interrupt(struct dwc3 *dwc, const struct dwc3_event_depevt *event);
void dwc3_ep0_out_start(struct dwc3 *dwc);
int dwc3_gadget_ep0_queue(struct usb_ep *ep, struct usb_request *request,
gfp_t gfp_flags);
int __dwc3_gadget_ep_set_halt(struct dwc3_ep *dep, int value);
int dwc3_send_gadget_ep_cmd(struct dwc3 *dwc, unsigned ep,
unsigned cmd, struct dwc3_gadget_ep_cmd_params *params);
void dwc3_map_buffer_to_dma(struct dwc3_request *req);
void dwc3_unmap_buffer_from_dma(struct dwc3_request *req);
/**
* dwc3_gadget_ep_get_transfer_index - Gets transfer index from HW
* @dwc: DesignWare USB3 Pointer
* @number: DWC endpoint number
*
* Caller should take care of locking
*/
static inline u32 dwc3_gadget_ep_get_transfer_index(struct dwc3 *dwc, u8 number)
{
u32 res_id;
res_id = dwc3_readl(dwc->regs, DWC3_DEPCMD(number));
return DWC3_DEPCMD_GET_RSC_IDX(res_id);
}
/**
* dwc3_gadget_event_string - returns event name
* @event: the event code
*/
static inline const char *dwc3_gadget_event_string(u8 event)
{
switch (event) {
case DWC3_DEVICE_EVENT_DISCONNECT:
return "Disconnect";
case DWC3_DEVICE_EVENT_RESET:
return "Reset";
case DWC3_DEVICE_EVENT_CONNECT_DONE:
return "Connection Done";
case DWC3_DEVICE_EVENT_LINK_STATUS_CHANGE:
return "Link Status Change";
case DWC3_DEVICE_EVENT_WAKEUP:
return "WakeUp";
case DWC3_DEVICE_EVENT_EOPF:
return "End-Of-Frame";
case DWC3_DEVICE_EVENT_SOF:
return "Start-Of-Frame";
case DWC3_DEVICE_EVENT_ERRATIC_ERROR:
return "Erratic Error";
case DWC3_DEVICE_EVENT_CMD_CMPL:
return "Command Complete";
case DWC3_DEVICE_EVENT_OVERFLOW:
return "Overflow";
}
return "UNKNOWN";
}
/**
* dwc3_ep_event_string - returns event name
* @event: then event code
*/
static inline const char *dwc3_ep_event_string(u8 event)
{
switch (event) {
case DWC3_DEPEVT_XFERCOMPLETE:
return "Transfer Complete";
case DWC3_DEPEVT_XFERINPROGRESS:
return "Transfer In-Progress";
case DWC3_DEPEVT_XFERNOTREADY:
return "Transfer Not Ready";
case DWC3_DEPEVT_RXTXFIFOEVT:
return "FIFO";
case DWC3_DEPEVT_STREAMEVT:
return "Stream";
case DWC3_DEPEVT_EPCMDCMPLT:
return "Endpoint Command Complete";
}
return "UNKNOWN";
}
#endif /* __DRIVERS_USB_DWC3_GADGET_H */
|
