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1 | /** |
2 | * core.h - DesignWare USB3 DRD Core Header | |
3 | * | |
4 | * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com | |
5 | * All rights reserved. | |
6 | * | |
7 | * Authors: Felipe Balbi <balbi@ti.com>, | |
8 | * Sebastian Andrzej Siewior <bigeasy@linutronix.de> | |
9 | * | |
10 | * Redistribution and use in source and binary forms, with or without | |
11 | * modification, are permitted provided that the following conditions | |
12 | * are met: | |
13 | * 1. Redistributions of source code must retain the above copyright | |
14 | * notice, this list of conditions, and the following disclaimer, | |
15 | * without modification. | |
16 | * 2. Redistributions in binary form must reproduce the above copyright | |
17 | * notice, this list of conditions and the following disclaimer in the | |
18 | * documentation and/or other materials provided with the distribution. | |
19 | * 3. The names of the above-listed copyright holders may not be used | |
20 | * to endorse or promote products derived from this software without | |
21 | * specific prior written permission. | |
22 | * | |
23 | * ALTERNATIVELY, this software may be distributed under the terms of the | |
24 | * GNU General Public License ("GPL") version 2, as published by the Free | |
25 | * Software Foundation. | |
26 | * | |
27 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS | |
28 | * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, | |
29 | * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
30 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR | |
31 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
32 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
33 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
34 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
35 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
36 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
37 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
38 | */ | |
39 | ||
40 | #ifndef __DRIVERS_USB_DWC3_CORE_H | |
41 | #define __DRIVERS_USB_DWC3_CORE_H | |
42 | ||
43 | #include <linux/device.h> | |
44 | #include <linux/spinlock.h> | |
45 | #include <linux/list.h> | |
46 | #include <linux/dma-mapping.h> | |
47 | #include <linux/mm.h> | |
48 | #include <linux/debugfs.h> | |
49 | ||
50 | #include <linux/usb/ch9.h> | |
51 | #include <linux/usb/gadget.h> | |
52 | ||
53 | /* Global constants */ | |
54 | #define DWC3_ENDPOINTS_NUM 32 | |
55 | ||
56 | #define DWC3_EVENT_BUFFERS_NUM 2 | |
57 | #define DWC3_EVENT_BUFFERS_SIZE PAGE_SIZE | |
58 | #define DWC3_EVENT_TYPE_MASK 0xfe | |
59 | ||
60 | #define DWC3_EVENT_TYPE_DEV 0 | |
61 | #define DWC3_EVENT_TYPE_CARKIT 3 | |
62 | #define DWC3_EVENT_TYPE_I2C 4 | |
63 | ||
64 | #define DWC3_DEVICE_EVENT_DISCONNECT 0 | |
65 | #define DWC3_DEVICE_EVENT_RESET 1 | |
66 | #define DWC3_DEVICE_EVENT_CONNECT_DONE 2 | |
67 | #define DWC3_DEVICE_EVENT_LINK_STATUS_CHANGE 3 | |
68 | #define DWC3_DEVICE_EVENT_WAKEUP 4 | |
69 | #define DWC3_DEVICE_EVENT_EOPF 6 | |
70 | #define DWC3_DEVICE_EVENT_SOF 7 | |
71 | #define DWC3_DEVICE_EVENT_ERRATIC_ERROR 9 | |
72 | #define DWC3_DEVICE_EVENT_CMD_CMPL 10 | |
73 | #define DWC3_DEVICE_EVENT_OVERFLOW 11 | |
74 | ||
75 | #define DWC3_GEVNTCOUNT_MASK 0xfffc | |
76 | #define DWC3_GSNPSID_MASK 0xffff0000 | |
77 | #define DWC3_GSNPSREV_MASK 0xffff | |
78 | ||
79 | /* Global Registers */ | |
80 | #define DWC3_GSBUSCFG0 0xc100 | |
81 | #define DWC3_GSBUSCFG1 0xc104 | |
82 | #define DWC3_GTXTHRCFG 0xc108 | |
83 | #define DWC3_GRXTHRCFG 0xc10c | |
84 | #define DWC3_GCTL 0xc110 | |
85 | #define DWC3_GEVTEN 0xc114 | |
86 | #define DWC3_GSTS 0xc118 | |
87 | #define DWC3_GSNPSID 0xc120 | |
88 | #define DWC3_GGPIO 0xc124 | |
89 | #define DWC3_GUID 0xc128 | |
90 | #define DWC3_GUCTL 0xc12c | |
91 | #define DWC3_GBUSERRADDR0 0xc130 | |
92 | #define DWC3_GBUSERRADDR1 0xc134 | |
93 | #define DWC3_GPRTBIMAP0 0xc138 | |
94 | #define DWC3_GPRTBIMAP1 0xc13c | |
95 | #define DWC3_GHWPARAMS0 0xc140 | |
96 | #define DWC3_GHWPARAMS1 0xc144 | |
97 | #define DWC3_GHWPARAMS2 0xc148 | |
98 | #define DWC3_GHWPARAMS3 0xc14c | |
99 | #define DWC3_GHWPARAMS4 0xc150 | |
100 | #define DWC3_GHWPARAMS5 0xc154 | |
101 | #define DWC3_GHWPARAMS6 0xc158 | |
102 | #define DWC3_GHWPARAMS7 0xc15c | |
103 | #define DWC3_GDBGFIFOSPACE 0xc160 | |
104 | #define DWC3_GDBGLTSSM 0xc164 | |
105 | #define DWC3_GPRTBIMAP_HS0 0xc180 | |
106 | #define DWC3_GPRTBIMAP_HS1 0xc184 | |
107 | #define DWC3_GPRTBIMAP_FS0 0xc188 | |
108 | #define DWC3_GPRTBIMAP_FS1 0xc18c | |
109 | ||
110 | #define DWC3_GUSB2PHYCFG(n) (0xc200 + (n * 0x04)) | |
111 | #define DWC3_GUSB2I2CCTL(n) (0xc240 + (n * 0x04)) | |
112 | ||
113 | #define DWC3_GUSB2PHYACC(n) (0xc280 + (n * 0x04)) | |
114 | ||
115 | #define DWC3_GUSB3PIPECTL(n) (0xc2c0 + (n * 0x04)) | |
116 | ||
117 | #define DWC3_GTXFIFOSIZ(n) (0xc300 + (n * 0x04)) | |
118 | #define DWC3_GRXFIFOSIZ(n) (0xc380 + (n * 0x04)) | |
119 | ||
120 | #define DWC3_GEVNTADRLO(n) (0xc400 + (n * 0x10)) | |
121 | #define DWC3_GEVNTADRHI(n) (0xc404 + (n * 0x10)) | |
122 | #define DWC3_GEVNTSIZ(n) (0xc408 + (n * 0x10)) | |
123 | #define DWC3_GEVNTCOUNT(n) (0xc40c + (n * 0x10)) | |
124 | ||
125 | #define DWC3_GHWPARAMS8 0xc600 | |
126 | ||
127 | /* Device Registers */ | |
128 | #define DWC3_DCFG 0xc700 | |
129 | #define DWC3_DCTL 0xc704 | |
130 | #define DWC3_DEVTEN 0xc708 | |
131 | #define DWC3_DSTS 0xc70c | |
132 | #define DWC3_DGCMDPAR 0xc710 | |
133 | #define DWC3_DGCMD 0xc714 | |
134 | #define DWC3_DALEPENA 0xc720 | |
135 | #define DWC3_DEPCMDPAR2(n) (0xc800 + (n * 0x10)) | |
136 | #define DWC3_DEPCMDPAR1(n) (0xc804 + (n * 0x10)) | |
137 | #define DWC3_DEPCMDPAR0(n) (0xc808 + (n * 0x10)) | |
138 | #define DWC3_DEPCMD(n) (0xc80c + (n * 0x10)) | |
139 | ||
140 | /* OTG Registers */ | |
141 | #define DWC3_OCFG 0xcc00 | |
142 | #define DWC3_OCTL 0xcc04 | |
143 | #define DWC3_OEVTEN 0xcc08 | |
144 | #define DWC3_OSTS 0xcc0C | |
145 | ||
146 | /* Bit fields */ | |
147 | ||
148 | /* Global Configuration Register */ | |
149 | #define DWC3_GCTL_PWRDNSCALE(n) (n << 19) | |
150 | #define DWC3_GCTL_U2RSTECN 16 | |
151 | #define DWC3_GCTL_RAMCLKSEL(x) ((x & DWC3_GCTL_CLK_MASK) << 6) | |
152 | #define DWC3_GCTL_CLK_BUS (0) | |
153 | #define DWC3_GCTL_CLK_PIPE (1) | |
154 | #define DWC3_GCTL_CLK_PIPEHALF (2) | |
155 | #define DWC3_GCTL_CLK_MASK (3) | |
156 | ||
157 | #define DWC3_GCTL_PRTCAPDIR(n) (n << 12) | |
158 | #define DWC3_GCTL_PRTCAP_HOST 1 | |
159 | #define DWC3_GCTL_PRTCAP_DEVICE 2 | |
160 | #define DWC3_GCTL_PRTCAP_OTG 3 | |
161 | ||
162 | #define DWC3_GCTL_CORESOFTRESET (1 << 11) | |
163 | #define DWC3_GCTL_DISSCRAMBLE (1 << 3) | |
164 | ||
165 | /* Global USB2 PHY Configuration Register */ | |
166 | #define DWC3_GUSB2PHYCFG_PHYSOFTRST (1 << 31) | |
167 | #define DWC3_GUSB2PHYCFG_SUSPHY (1 << 6) | |
168 | ||
169 | /* Global USB3 PIPE Control Register */ | |
170 | #define DWC3_GUSB3PIPECTL_PHYSOFTRST (1 << 31) | |
171 | #define DWC3_GUSB3PIPECTL_SUSPHY (1 << 17) | |
172 | ||
173 | /* Device Configuration Register */ | |
174 | #define DWC3_DCFG_DEVADDR(addr) ((addr) << 3) | |
175 | #define DWC3_DCFG_DEVADDR_MASK DWC3_DCFG_DEVADDR(0x7f) | |
176 | ||
177 | #define DWC3_DCFG_SPEED_MASK (7 << 0) | |
178 | #define DWC3_DCFG_SUPERSPEED (4 << 0) | |
179 | #define DWC3_DCFG_HIGHSPEED (0 << 0) | |
180 | #define DWC3_DCFG_FULLSPEED2 (1 << 0) | |
181 | #define DWC3_DCFG_LOWSPEED (2 << 0) | |
182 | #define DWC3_DCFG_FULLSPEED1 (3 << 0) | |
183 | ||
184 | /* Device Control Register */ | |
185 | #define DWC3_DCTL_RUN_STOP (1 << 31) | |
186 | #define DWC3_DCTL_CSFTRST (1 << 30) | |
187 | #define DWC3_DCTL_LSFTRST (1 << 29) | |
188 | ||
189 | #define DWC3_DCTL_HIRD_THRES_MASK (0x1f << 24) | |
190 | #define DWC3_DCTL_HIRD_THRES(n) (((n) & DWC3_DCTL_HIRD_THRES_MASK) >> 24) | |
191 | ||
192 | #define DWC3_DCTL_APPL1RES (1 << 23) | |
193 | ||
194 | #define DWC3_DCTL_INITU2ENA (1 << 12) | |
195 | #define DWC3_DCTL_ACCEPTU2ENA (1 << 11) | |
196 | #define DWC3_DCTL_INITU1ENA (1 << 10) | |
197 | #define DWC3_DCTL_ACCEPTU1ENA (1 << 9) | |
198 | #define DWC3_DCTL_TSTCTRL_MASK (0xf << 1) | |
199 | ||
200 | #define DWC3_DCTL_ULSTCHNGREQ_MASK (0x0f << 5) | |
201 | #define DWC3_DCTL_ULSTCHNGREQ(n) (((n) << 5) & DWC3_DCTL_ULSTCHNGREQ_MASK) | |
202 | ||
203 | #define DWC3_DCTL_ULSTCHNG_NO_ACTION (DWC3_DCTL_ULSTCHNGREQ(0)) | |
204 | #define DWC3_DCTL_ULSTCHNG_SS_DISABLED (DWC3_DCTL_ULSTCHNGREQ(4)) | |
205 | #define DWC3_DCTL_ULSTCHNG_RX_DETECT (DWC3_DCTL_ULSTCHNGREQ(5)) | |
206 | #define DWC3_DCTL_ULSTCHNG_SS_INACTIVE (DWC3_DCTL_ULSTCHNGREQ(6)) | |
207 | #define DWC3_DCTL_ULSTCHNG_RECOVERY (DWC3_DCTL_ULSTCHNGREQ(8)) | |
208 | #define DWC3_DCTL_ULSTCHNG_COMPLIANCE (DWC3_DCTL_ULSTCHNGREQ(10)) | |
209 | #define DWC3_DCTL_ULSTCHNG_LOOPBACK (DWC3_DCTL_ULSTCHNGREQ(11)) | |
210 | ||
211 | /* Device Event Enable Register */ | |
212 | #define DWC3_DEVTEN_VNDRDEVTSTRCVEDEN (1 << 12) | |
213 | #define DWC3_DEVTEN_EVNTOVERFLOWEN (1 << 11) | |
214 | #define DWC3_DEVTEN_CMDCMPLTEN (1 << 10) | |
215 | #define DWC3_DEVTEN_ERRTICERREN (1 << 9) | |
216 | #define DWC3_DEVTEN_SOFEN (1 << 7) | |
217 | #define DWC3_DEVTEN_EOPFEN (1 << 6) | |
218 | #define DWC3_DEVTEN_WKUPEVTEN (1 << 4) | |
219 | #define DWC3_DEVTEN_ULSTCNGEN (1 << 3) | |
220 | #define DWC3_DEVTEN_CONNECTDONEEN (1 << 2) | |
221 | #define DWC3_DEVTEN_USBRSTEN (1 << 1) | |
222 | #define DWC3_DEVTEN_DISCONNEVTEN (1 << 0) | |
223 | ||
224 | /* Device Status Register */ | |
225 | #define DWC3_DSTS_PWRUPREQ (1 << 24) | |
226 | #define DWC3_DSTS_COREIDLE (1 << 23) | |
227 | #define DWC3_DSTS_DEVCTRLHLT (1 << 22) | |
228 | ||
229 | #define DWC3_DSTS_USBLNKST_MASK (0x0f << 18) | |
230 | #define DWC3_DSTS_USBLNKST(n) (((n) & DWC3_DSTS_USBLNKST_MASK) >> 18) | |
231 | ||
232 | #define DWC3_DSTS_RXFIFOEMPTY (1 << 17) | |
233 | ||
234 | #define DWC3_DSTS_SOFFN_MASK (0x3ff << 3) | |
235 | #define DWC3_DSTS_SOFFN(n) (((n) & DWC3_DSTS_SOFFN_MASK) >> 3) | |
236 | ||
237 | #define DWC3_DSTS_CONNECTSPD (7 << 0) | |
238 | ||
239 | #define DWC3_DSTS_SUPERSPEED (4 << 0) | |
240 | #define DWC3_DSTS_HIGHSPEED (0 << 0) | |
241 | #define DWC3_DSTS_FULLSPEED2 (1 << 0) | |
242 | #define DWC3_DSTS_LOWSPEED (2 << 0) | |
243 | #define DWC3_DSTS_FULLSPEED1 (3 << 0) | |
244 | ||
245 | /* Device Generic Command Register */ | |
246 | #define DWC3_DGCMD_SET_LMP 0x01 | |
247 | #define DWC3_DGCMD_SET_PERIODIC_PAR 0x02 | |
248 | #define DWC3_DGCMD_XMIT_FUNCTION 0x03 | |
249 | #define DWC3_DGCMD_SELECTED_FIFO_FLUSH 0x09 | |
250 | #define DWC3_DGCMD_ALL_FIFO_FLUSH 0x0a | |
251 | #define DWC3_DGCMD_SET_ENDPOINT_NRDY 0x0c | |
252 | #define DWC3_DGCMD_RUN_SOC_BUS_LOOPBACK 0x10 | |
253 | ||
254 | /* Device Endpoint Command Register */ | |
255 | #define DWC3_DEPCMD_PARAM_SHIFT 16 | |
256 | #define DWC3_DEPCMD_PARAM(x) (x << DWC3_DEPCMD_PARAM_SHIFT) | |
257 | #define DWC3_DEPCMD_GET_RSC_IDX(x) ((x >> DWC3_DEPCMD_PARAM_SHIFT) & 0x7f) | |
258 | #define DWC3_DEPCMD_STATUS_MASK (0x0f << 12) | |
259 | #define DWC3_DEPCMD_STATUS(x) ((x & DWC3_DEPCMD_STATUS_MASK) >> 12) | |
260 | #define DWC3_DEPCMD_HIPRI_FORCERM (1 << 11) | |
261 | #define DWC3_DEPCMD_CMDACT (1 << 10) | |
262 | #define DWC3_DEPCMD_CMDIOC (1 << 8) | |
263 | ||
264 | #define DWC3_DEPCMD_DEPSTARTCFG (0x09 << 0) | |
265 | #define DWC3_DEPCMD_ENDTRANSFER (0x08 << 0) | |
266 | #define DWC3_DEPCMD_UPDATETRANSFER (0x07 << 0) | |
267 | #define DWC3_DEPCMD_STARTTRANSFER (0x06 << 0) | |
268 | #define DWC3_DEPCMD_CLEARSTALL (0x05 << 0) | |
269 | #define DWC3_DEPCMD_SETSTALL (0x04 << 0) | |
270 | #define DWC3_DEPCMD_GETSEQNUMBER (0x03 << 0) | |
271 | #define DWC3_DEPCMD_SETTRANSFRESOURCE (0x02 << 0) | |
272 | #define DWC3_DEPCMD_SETEPCONFIG (0x01 << 0) | |
273 | ||
274 | /* The EP number goes 0..31 so ep0 is always out and ep1 is always in */ | |
275 | #define DWC3_DALEPENA_EP(n) (1 << n) | |
276 | ||
277 | #define DWC3_DEPCMD_TYPE_CONTROL 0 | |
278 | #define DWC3_DEPCMD_TYPE_ISOC 1 | |
279 | #define DWC3_DEPCMD_TYPE_BULK 2 | |
280 | #define DWC3_DEPCMD_TYPE_INTR 3 | |
281 | ||
282 | /* Structures */ | |
283 | ||
284 | struct dwc3_trb_hw; | |
285 | ||
286 | /** | |
287 | * struct dwc3_event_buffer - Software event buffer representation | |
288 | * @list: a list of event buffers | |
289 | * @buf: _THE_ buffer | |
290 | * @length: size of this buffer | |
291 | * @dma: dma_addr_t | |
292 | * @dwc: pointer to DWC controller | |
293 | */ | |
294 | struct dwc3_event_buffer { | |
295 | void *buf; | |
296 | unsigned length; | |
297 | unsigned int lpos; | |
298 | ||
299 | dma_addr_t dma; | |
300 | ||
301 | struct dwc3 *dwc; | |
302 | }; | |
303 | ||
304 | #define DWC3_EP_FLAG_STALLED (1 << 0) | |
305 | #define DWC3_EP_FLAG_WEDGED (1 << 1) | |
306 | ||
307 | #define DWC3_EP_DIRECTION_TX true | |
308 | #define DWC3_EP_DIRECTION_RX false | |
309 | ||
310 | #define DWC3_TRB_NUM 32 | |
311 | #define DWC3_TRB_MASK (DWC3_TRB_NUM - 1) | |
312 | ||
313 | /** | |
314 | * struct dwc3_ep - device side endpoint representation | |
315 | * @endpoint: usb endpoint | |
316 | * @request_list: list of requests for this endpoint | |
317 | * @req_queued: list of requests on this ep which have TRBs setup | |
318 | * @trb_pool: array of transaction buffers | |
319 | * @trb_pool_dma: dma address of @trb_pool | |
320 | * @free_slot: next slot which is going to be used | |
321 | * @busy_slot: first slot which is owned by HW | |
322 | * @desc: usb_endpoint_descriptor pointer | |
323 | * @dwc: pointer to DWC controller | |
324 | * @flags: endpoint flags (wedged, stalled, ...) | |
325 | * @current_trb: index of current used trb | |
326 | * @number: endpoint number (1 - 15) | |
327 | * @type: set to bmAttributes & USB_ENDPOINT_XFERTYPE_MASK | |
328 | * @res_trans_idx: Resource transfer index | |
329 | * @interval: the intervall on which the ISOC transfer is started | |
330 | * @name: a human readable name e.g. ep1out-bulk | |
331 | * @direction: true for TX, false for RX | |
332 | */ | |
333 | struct dwc3_ep { | |
334 | struct usb_ep endpoint; | |
335 | struct list_head request_list; | |
336 | struct list_head req_queued; | |
337 | ||
338 | struct dwc3_trb_hw *trb_pool; | |
339 | dma_addr_t trb_pool_dma; | |
340 | u32 free_slot; | |
341 | u32 busy_slot; | |
342 | const struct usb_endpoint_descriptor *desc; | |
343 | struct dwc3 *dwc; | |
344 | ||
345 | unsigned flags; | |
346 | #define DWC3_EP_ENABLED (1 << 0) | |
347 | #define DWC3_EP_STALL (1 << 1) | |
348 | #define DWC3_EP_WEDGE (1 << 2) | |
349 | #define DWC3_EP_BUSY (1 << 4) | |
350 | #define DWC3_EP_PENDING_REQUEST (1 << 5) | |
351 | #define DWC3_EP_WILL_SHUTDOWN (1 << 6) | |
352 | ||
353 | unsigned current_trb; | |
354 | ||
355 | u8 number; | |
356 | u8 type; | |
357 | u8 res_trans_idx; | |
358 | u32 interval; | |
359 | ||
360 | char name[20]; | |
361 | ||
362 | unsigned direction:1; | |
363 | }; | |
364 | ||
365 | enum dwc3_phy { | |
366 | DWC3_PHY_UNKNOWN = 0, | |
367 | DWC3_PHY_USB3, | |
368 | DWC3_PHY_USB2, | |
369 | }; | |
370 | ||
371 | enum dwc3_ep0_state { | |
372 | EP0_UNCONNECTED = 0, | |
373 | EP0_IDLE, | |
374 | EP0_IN_DATA_PHASE, | |
375 | EP0_OUT_DATA_PHASE, | |
376 | EP0_IN_WAIT_GADGET, | |
377 | EP0_OUT_WAIT_GADGET, | |
378 | EP0_IN_WAIT_NRDY, | |
379 | EP0_OUT_WAIT_NRDY, | |
380 | EP0_IN_STATUS_PHASE, | |
381 | EP0_OUT_STATUS_PHASE, | |
382 | EP0_STALL, | |
383 | }; | |
384 | ||
385 | enum dwc3_link_state { | |
386 | /* In SuperSpeed */ | |
387 | DWC3_LINK_STATE_U0 = 0x00, /* in HS, means ON */ | |
388 | DWC3_LINK_STATE_U1 = 0x01, | |
389 | DWC3_LINK_STATE_U2 = 0x02, /* in HS, means SLEEP */ | |
390 | DWC3_LINK_STATE_U3 = 0x03, /* in HS, means SUSPEND */ | |
391 | DWC3_LINK_STATE_SS_DIS = 0x04, | |
392 | DWC3_LINK_STATE_RX_DET = 0x05, /* in HS, means Early Suspend */ | |
393 | DWC3_LINK_STATE_SS_INACT = 0x06, | |
394 | DWC3_LINK_STATE_POLL = 0x07, | |
395 | DWC3_LINK_STATE_RECOV = 0x08, | |
396 | DWC3_LINK_STATE_HRESET = 0x09, | |
397 | DWC3_LINK_STATE_CMPLY = 0x0a, | |
398 | DWC3_LINK_STATE_LPBK = 0x0b, | |
399 | DWC3_LINK_STATE_MASK = 0x0f, | |
400 | }; | |
401 | ||
402 | enum dwc3_device_state { | |
403 | DWC3_DEFAULT_STATE, | |
404 | DWC3_ADDRESS_STATE, | |
405 | DWC3_CONFIGURED_STATE, | |
406 | }; | |
407 | ||
408 | /** | |
409 | * struct dwc3_trb - transfer request block | |
410 | * @bpl: lower 32bit of the buffer | |
411 | * @bph: higher 32bit of the buffer | |
412 | * @length: buffer size (up to 16mb - 1) | |
413 | * @pcm1: packet count m1 | |
414 | * @trbsts: trb status | |
415 | * 0 = ok | |
416 | * 1 = missed isoc | |
417 | * 2 = setup pending | |
418 | * @hwo: hardware owner of descriptor | |
419 | * @lst: last trb | |
420 | * @chn: chain buffers | |
421 | * @csp: continue on short packets (only supported on isoc eps) | |
422 | * @trbctl: trb control | |
423 | * 1 = normal | |
424 | * 2 = control-setup | |
425 | * 3 = control-status-2 | |
426 | * 4 = control-status-3 | |
427 | * 5 = control-data (first trb of data stage) | |
428 | * 6 = isochronous-first (first trb of service interval) | |
429 | * 7 = isochronous | |
430 | * 8 = link trb | |
431 | * others = reserved | |
432 | * @isp_imi: interrupt on short packet / interrupt on missed isoc | |
433 | * @ioc: interrupt on complete | |
434 | * @sid_sofn: Stream ID / SOF Number | |
435 | */ | |
436 | struct dwc3_trb { | |
437 | u64 bplh; | |
438 | ||
439 | union { | |
440 | struct { | |
441 | u32 length:24; | |
442 | u32 pcm1:2; | |
443 | u32 reserved27_26:2; | |
444 | u32 trbsts:4; | |
445 | #define DWC3_TRB_STS_OKAY 0 | |
446 | #define DWC3_TRB_STS_MISSED_ISOC 1 | |
447 | #define DWC3_TRB_STS_SETUP_PENDING 2 | |
448 | }; | |
449 | u32 len_pcm; | |
450 | }; | |
451 | ||
452 | union { | |
453 | struct { | |
454 | u32 hwo:1; | |
455 | u32 lst:1; | |
456 | u32 chn:1; | |
457 | u32 csp:1; | |
458 | u32 trbctl:6; | |
459 | u32 isp_imi:1; | |
460 | u32 ioc:1; | |
461 | u32 reserved13_12:2; | |
462 | u32 sid_sofn:16; | |
463 | u32 reserved31_30:2; | |
464 | }; | |
465 | u32 control; | |
466 | }; | |
467 | } __packed; | |
468 | ||
469 | /** | |
470 | * struct dwc3_trb_hw - transfer request block (hw format) | |
471 | * @bpl: DW0-3 | |
472 | * @bph: DW4-7 | |
473 | * @size: DW8-B | |
474 | * @trl: DWC-F | |
475 | */ | |
476 | struct dwc3_trb_hw { | |
477 | __le32 bpl; | |
478 | __le32 bph; | |
479 | __le32 size; | |
480 | __le32 ctrl; | |
481 | } __packed; | |
482 | ||
483 | static inline void dwc3_trb_to_hw(struct dwc3_trb *nat, struct dwc3_trb_hw *hw) | |
484 | { | |
485 | hw->bpl = cpu_to_le32(lower_32_bits(nat->bplh)); | |
486 | hw->bph = cpu_to_le32(upper_32_bits(nat->bplh)); | |
487 | hw->size = cpu_to_le32p(&nat->len_pcm); | |
488 | /* HWO is written last */ | |
489 | hw->ctrl = cpu_to_le32p(&nat->control); | |
490 | } | |
491 | ||
492 | static inline void dwc3_trb_to_nat(struct dwc3_trb_hw *hw, struct dwc3_trb *nat) | |
493 | { | |
494 | u64 bplh; | |
495 | ||
496 | bplh = le32_to_cpup(&hw->bpl); | |
497 | bplh |= (u64) le32_to_cpup(&hw->bph) << 32; | |
498 | nat->bplh = bplh; | |
499 | ||
500 | nat->len_pcm = le32_to_cpup(&hw->size); | |
501 | nat->control = le32_to_cpup(&hw->ctrl); | |
502 | } | |
503 | ||
504 | /** | |
505 | * struct dwc3 - representation of our controller | |
506 | * ctrl_req: usb control request which is used for ep0 | |
507 | * ep0_trb: trb which is used for the ctrl_req | |
508 | * setup_buf: used while precessing STD USB requests | |
509 | * ctrl_req_addr: dma address of ctrl_req | |
510 | * ep0_trb: dma address of ep0_trb | |
511 | * ep0_usb_req: dummy req used while handling STD USB requests | |
512 | * setup_buf_addr: dma address of setup_buf | |
513 | * @lock: for synchronizing | |
514 | * @dev: pointer to our struct device | |
515 | * @event_buffer_list: a list of event buffers | |
516 | * @gadget: device side representation of the peripheral controller | |
517 | * @gadget_driver: pointer to the gadget driver | |
518 | * @regs: base address for our registers | |
519 | * @regs_size: address space size | |
520 | * @irq: IRQ number | |
521 | * @revision: revision register contents | |
522 | * @is_selfpowered: true when we are selfpowered | |
523 | * @three_stage_setup: set if we perform a three phase setup | |
524 | * @ep0_status_pending: ep0 status response without a req is pending | |
525 | * @ep0state: state of endpoint zero | |
526 | * @link_state: link state | |
527 | * @speed: device speed (super, high, full, low) | |
528 | * @mem: points to start of memory which is used for this struct. | |
529 | * @root: debugfs root folder pointer | |
530 | */ | |
531 | struct dwc3 { | |
532 | struct usb_ctrlrequest *ctrl_req; | |
533 | struct dwc3_trb_hw *ep0_trb; | |
534 | u8 *setup_buf; | |
535 | dma_addr_t ctrl_req_addr; | |
536 | dma_addr_t ep0_trb_addr; | |
537 | dma_addr_t setup_buf_addr; | |
538 | struct usb_request ep0_usb_req; | |
539 | /* device lock */ | |
540 | spinlock_t lock; | |
541 | struct device *dev; | |
542 | ||
543 | struct dwc3_event_buffer *ev_buffs[DWC3_EVENT_BUFFERS_NUM]; | |
544 | struct dwc3_ep *eps[DWC3_ENDPOINTS_NUM]; | |
545 | ||
546 | struct usb_gadget gadget; | |
547 | struct usb_gadget_driver *gadget_driver; | |
548 | ||
549 | void __iomem *regs; | |
550 | size_t regs_size; | |
551 | ||
552 | int irq; | |
553 | ||
554 | u32 revision; | |
555 | ||
556 | #define DWC3_REVISION_173A 0x5533173a | |
557 | #define DWC3_REVISION_175A 0x5533175a | |
558 | #define DWC3_REVISION_180A 0x5533180a | |
559 | #define DWC3_REVISION_183A 0x5533183a | |
560 | #define DWC3_REVISION_185A 0x5533185a | |
561 | #define DWC3_REVISION_188A 0x5533188a | |
562 | #define DWC3_REVISION_190A 0x5533190a | |
563 | ||
564 | unsigned is_selfpowered:1; | |
565 | unsigned three_stage_setup:1; | |
566 | unsigned ep0_status_pending:1; | |
567 | ||
568 | enum dwc3_ep0_state ep0state; | |
569 | enum dwc3_link_state link_state; | |
570 | enum dwc3_device_state dev_state; | |
571 | ||
572 | u8 speed; | |
573 | void *mem; | |
574 | ||
575 | struct dentry *root; | |
576 | }; | |
577 | ||
578 | /* -------------------------------------------------------------------------- */ | |
579 | ||
580 | #define DWC3_TRBSTS_OK 0 | |
581 | #define DWC3_TRBSTS_MISSED_ISOC 1 | |
582 | #define DWC3_TRBSTS_SETUP_PENDING 2 | |
583 | ||
584 | #define DWC3_TRBCTL_NORMAL 1 | |
585 | #define DWC3_TRBCTL_CONTROL_SETUP 2 | |
586 | #define DWC3_TRBCTL_CONTROL_STATUS2 3 | |
587 | #define DWC3_TRBCTL_CONTROL_STATUS3 4 | |
588 | #define DWC3_TRBCTL_CONTROL_DATA 5 | |
589 | #define DWC3_TRBCTL_ISOCHRONOUS_FIRST 6 | |
590 | #define DWC3_TRBCTL_ISOCHRONOUS 7 | |
591 | #define DWC3_TRBCTL_LINK_TRB 8 | |
592 | ||
593 | /* -------------------------------------------------------------------------- */ | |
594 | ||
595 | struct dwc3_event_type { | |
596 | u32 is_devspec:1; | |
597 | u32 type:6; | |
598 | u32 reserved8_31:25; | |
599 | } __packed; | |
600 | ||
601 | #define DWC3_DEPEVT_XFERCOMPLETE 0x01 | |
602 | #define DWC3_DEPEVT_XFERINPROGRESS 0x02 | |
603 | #define DWC3_DEPEVT_XFERNOTREADY 0x03 | |
604 | #define DWC3_DEPEVT_RXTXFIFOEVT 0x04 | |
605 | #define DWC3_DEPEVT_STREAMEVT 0x06 | |
606 | #define DWC3_DEPEVT_EPCMDCMPLT 0x07 | |
607 | ||
608 | /** | |
609 | * struct dwc3_event_depvt - Device Endpoint Events | |
610 | * @one_bit: indicates this is an endpoint event (not used) | |
611 | * @endpoint_number: number of the endpoint | |
612 | * @endpoint_event: The event we have: | |
613 | * 0x00 - Reserved | |
614 | * 0x01 - XferComplete | |
615 | * 0x02 - XferInProgress | |
616 | * 0x03 - XferNotReady | |
617 | * 0x04 - RxTxFifoEvt (IN->Underrun, OUT->Overrun) | |
618 | * 0x05 - Reserved | |
619 | * 0x06 - StreamEvt | |
620 | * 0x07 - EPCmdCmplt | |
621 | * @reserved11_10: Reserved, don't use. | |
622 | * @status: Indicates the status of the event. Refer to databook for | |
623 | * more information. | |
624 | * @parameters: Parameters of the current event. Refer to databook for | |
625 | * more information. | |
626 | */ | |
627 | struct dwc3_event_depevt { | |
628 | u32 one_bit:1; | |
629 | u32 endpoint_number:5; | |
630 | u32 endpoint_event:4; | |
631 | u32 reserved11_10:2; | |
632 | u32 status:4; | |
633 | #define DEPEVT_STATUS_BUSERR (1 << 0) | |
634 | #define DEPEVT_STATUS_SHORT (1 << 1) | |
635 | #define DEPEVT_STATUS_IOC (1 << 2) | |
636 | #define DEPEVT_STATUS_LST (1 << 3) | |
637 | u32 parameters:16; | |
638 | } __packed; | |
639 | ||
640 | /** | |
641 | * struct dwc3_event_devt - Device Events | |
642 | * @one_bit: indicates this is a non-endpoint event (not used) | |
643 | * @device_event: indicates it's a device event. Should read as 0x00 | |
644 | * @type: indicates the type of device event. | |
645 | * 0 - DisconnEvt | |
646 | * 1 - USBRst | |
647 | * 2 - ConnectDone | |
648 | * 3 - ULStChng | |
649 | * 4 - WkUpEvt | |
650 | * 5 - Reserved | |
651 | * 6 - EOPF | |
652 | * 7 - SOF | |
653 | * 8 - Reserved | |
654 | * 9 - ErrticErr | |
655 | * 10 - CmdCmplt | |
656 | * 11 - EvntOverflow | |
657 | * 12 - VndrDevTstRcved | |
658 | * @reserved15_12: Reserved, not used | |
659 | * @event_info: Information about this event | |
660 | * @reserved31_24: Reserved, not used | |
661 | */ | |
662 | struct dwc3_event_devt { | |
663 | u32 one_bit:1; | |
664 | u32 device_event:7; | |
665 | u32 type:4; | |
666 | u32 reserved15_12:4; | |
667 | u32 event_info:8; | |
668 | u32 reserved31_24:8; | |
669 | } __packed; | |
670 | ||
671 | /** | |
672 | * struct dwc3_event_gevt - Other Core Events | |
673 | * @one_bit: indicates this is a non-endpoint event (not used) | |
674 | * @device_event: indicates it's (0x03) Carkit or (0x04) I2C event. | |
675 | * @phy_port_number: self-explanatory | |
676 | * @reserved31_12: Reserved, not used. | |
677 | */ | |
678 | struct dwc3_event_gevt { | |
679 | u32 one_bit:1; | |
680 | u32 device_event:7; | |
681 | u32 phy_port_number:4; | |
682 | u32 reserved31_12:20; | |
683 | } __packed; | |
684 | ||
685 | /** | |
686 | * union dwc3_event - representation of Event Buffer contents | |
687 | * @raw: raw 32-bit event | |
688 | * @type: the type of the event | |
689 | * @depevt: Device Endpoint Event | |
690 | * @devt: Device Event | |
691 | * @gevt: Global Event | |
692 | */ | |
693 | union dwc3_event { | |
694 | u32 raw; | |
695 | struct dwc3_event_type type; | |
696 | struct dwc3_event_depevt depevt; | |
697 | struct dwc3_event_devt devt; | |
698 | struct dwc3_event_gevt gevt; | |
699 | }; | |
700 | ||
701 | /* | |
702 | * DWC3 Features to be used as Driver Data | |
703 | */ | |
704 | ||
705 | #define DWC3_HAS_PERIPHERAL BIT(0) | |
706 | #define DWC3_HAS_XHCI BIT(1) | |
707 | #define DWC3_HAS_OTG BIT(3) | |
708 | ||
709 | #endif /* __DRIVERS_USB_DWC3_CORE_H */ |