xref: /linux/drivers/usb/dwc3/core.h (revision ca55b2fef3a9373fcfc30f82fd26bc7fccbda732)
1 /**
2  * core.h - DesignWare USB3 DRD Core Header
3  *
4  * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
5  *
6  * Authors: Felipe Balbi <balbi@ti.com>,
7  *	    Sebastian Andrzej Siewior <bigeasy@linutronix.de>
8  *
9  * This program is free software: you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License version 2  of
11  * the License as published by the Free Software Foundation.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16  * GNU General Public License for more details.
17  */
18 
19 #ifndef __DRIVERS_USB_DWC3_CORE_H
20 #define __DRIVERS_USB_DWC3_CORE_H
21 
22 #include <linux/device.h>
23 #include <linux/spinlock.h>
24 #include <linux/ioport.h>
25 #include <linux/list.h>
26 #include <linux/dma-mapping.h>
27 #include <linux/mm.h>
28 #include <linux/debugfs.h>
29 
30 #include <linux/usb/ch9.h>
31 #include <linux/usb/gadget.h>
32 #include <linux/usb/otg.h>
33 #include <linux/ulpi/interface.h>
34 
35 #include <linux/phy/phy.h>
36 
37 #define DWC3_MSG_MAX	500
38 
39 /* Global constants */
40 #define DWC3_EP0_BOUNCE_SIZE	512
41 #define DWC3_ENDPOINTS_NUM	32
42 #define DWC3_XHCI_RESOURCES_NUM	2
43 
44 #define DWC3_SCRATCHBUF_SIZE	4096	/* each buffer is assumed to be 4KiB */
45 #define DWC3_EVENT_SIZE		4	/* bytes */
46 #define DWC3_EVENT_MAX_NUM	64	/* 2 events/endpoint */
47 #define DWC3_EVENT_BUFFERS_SIZE	(DWC3_EVENT_SIZE * DWC3_EVENT_MAX_NUM)
48 #define DWC3_EVENT_TYPE_MASK	0xfe
49 
50 #define DWC3_EVENT_TYPE_DEV	0
51 #define DWC3_EVENT_TYPE_CARKIT	3
52 #define DWC3_EVENT_TYPE_I2C	4
53 
54 #define DWC3_DEVICE_EVENT_DISCONNECT		0
55 #define DWC3_DEVICE_EVENT_RESET			1
56 #define DWC3_DEVICE_EVENT_CONNECT_DONE		2
57 #define DWC3_DEVICE_EVENT_LINK_STATUS_CHANGE	3
58 #define DWC3_DEVICE_EVENT_WAKEUP		4
59 #define DWC3_DEVICE_EVENT_HIBER_REQ		5
60 #define DWC3_DEVICE_EVENT_EOPF			6
61 #define DWC3_DEVICE_EVENT_SOF			7
62 #define DWC3_DEVICE_EVENT_ERRATIC_ERROR		9
63 #define DWC3_DEVICE_EVENT_CMD_CMPL		10
64 #define DWC3_DEVICE_EVENT_OVERFLOW		11
65 
66 #define DWC3_GEVNTCOUNT_MASK	0xfffc
67 #define DWC3_GSNPSID_MASK	0xffff0000
68 #define DWC3_GSNPSREV_MASK	0xffff
69 
70 /* DWC3 registers memory space boundries */
71 #define DWC3_XHCI_REGS_START		0x0
72 #define DWC3_XHCI_REGS_END		0x7fff
73 #define DWC3_GLOBALS_REGS_START		0xc100
74 #define DWC3_GLOBALS_REGS_END		0xc6ff
75 #define DWC3_DEVICE_REGS_START		0xc700
76 #define DWC3_DEVICE_REGS_END		0xcbff
77 #define DWC3_OTG_REGS_START		0xcc00
78 #define DWC3_OTG_REGS_END		0xccff
79 
80 /* Global Registers */
81 #define DWC3_GSBUSCFG0		0xc100
82 #define DWC3_GSBUSCFG1		0xc104
83 #define DWC3_GTXTHRCFG		0xc108
84 #define DWC3_GRXTHRCFG		0xc10c
85 #define DWC3_GCTL		0xc110
86 #define DWC3_GEVTEN		0xc114
87 #define DWC3_GSTS		0xc118
88 #define DWC3_GSNPSID		0xc120
89 #define DWC3_GGPIO		0xc124
90 #define DWC3_GUID		0xc128
91 #define DWC3_GUCTL		0xc12c
92 #define DWC3_GBUSERRADDR0	0xc130
93 #define DWC3_GBUSERRADDR1	0xc134
94 #define DWC3_GPRTBIMAP0		0xc138
95 #define DWC3_GPRTBIMAP1		0xc13c
96 #define DWC3_GHWPARAMS0		0xc140
97 #define DWC3_GHWPARAMS1		0xc144
98 #define DWC3_GHWPARAMS2		0xc148
99 #define DWC3_GHWPARAMS3		0xc14c
100 #define DWC3_GHWPARAMS4		0xc150
101 #define DWC3_GHWPARAMS5		0xc154
102 #define DWC3_GHWPARAMS6		0xc158
103 #define DWC3_GHWPARAMS7		0xc15c
104 #define DWC3_GDBGFIFOSPACE	0xc160
105 #define DWC3_GDBGLTSSM		0xc164
106 #define DWC3_GPRTBIMAP_HS0	0xc180
107 #define DWC3_GPRTBIMAP_HS1	0xc184
108 #define DWC3_GPRTBIMAP_FS0	0xc188
109 #define DWC3_GPRTBIMAP_FS1	0xc18c
110 
111 #define DWC3_GUSB2PHYCFG(n)	(0xc200 + (n * 0x04))
112 #define DWC3_GUSB2I2CCTL(n)	(0xc240 + (n * 0x04))
113 
114 #define DWC3_GUSB2PHYACC(n)	(0xc280 + (n * 0x04))
115 
116 #define DWC3_GUSB3PIPECTL(n)	(0xc2c0 + (n * 0x04))
117 
118 #define DWC3_GTXFIFOSIZ(n)	(0xc300 + (n * 0x04))
119 #define DWC3_GRXFIFOSIZ(n)	(0xc380 + (n * 0x04))
120 
121 #define DWC3_GEVNTADRLO(n)	(0xc400 + (n * 0x10))
122 #define DWC3_GEVNTADRHI(n)	(0xc404 + (n * 0x10))
123 #define DWC3_GEVNTSIZ(n)	(0xc408 + (n * 0x10))
124 #define DWC3_GEVNTCOUNT(n)	(0xc40c + (n * 0x10))
125 
126 #define DWC3_GHWPARAMS8		0xc600
127 
128 /* Device Registers */
129 #define DWC3_DCFG		0xc700
130 #define DWC3_DCTL		0xc704
131 #define DWC3_DEVTEN		0xc708
132 #define DWC3_DSTS		0xc70c
133 #define DWC3_DGCMDPAR		0xc710
134 #define DWC3_DGCMD		0xc714
135 #define DWC3_DALEPENA		0xc720
136 #define DWC3_DEPCMDPAR2(n)	(0xc800 + (n * 0x10))
137 #define DWC3_DEPCMDPAR1(n)	(0xc804 + (n * 0x10))
138 #define DWC3_DEPCMDPAR0(n)	(0xc808 + (n * 0x10))
139 #define DWC3_DEPCMD(n)		(0xc80c + (n * 0x10))
140 
141 /* OTG Registers */
142 #define DWC3_OCFG		0xcc00
143 #define DWC3_OCTL		0xcc04
144 #define DWC3_OEVT		0xcc08
145 #define DWC3_OEVTEN		0xcc0C
146 #define DWC3_OSTS		0xcc10
147 
148 /* Bit fields */
149 
150 /* Global Configuration Register */
151 #define DWC3_GCTL_PWRDNSCALE(n)	((n) << 19)
152 #define DWC3_GCTL_U2RSTECN	(1 << 16)
153 #define DWC3_GCTL_RAMCLKSEL(x)	(((x) & DWC3_GCTL_CLK_MASK) << 6)
154 #define DWC3_GCTL_CLK_BUS	(0)
155 #define DWC3_GCTL_CLK_PIPE	(1)
156 #define DWC3_GCTL_CLK_PIPEHALF	(2)
157 #define DWC3_GCTL_CLK_MASK	(3)
158 
159 #define DWC3_GCTL_PRTCAP(n)	(((n) & (3 << 12)) >> 12)
160 #define DWC3_GCTL_PRTCAPDIR(n)	((n) << 12)
161 #define DWC3_GCTL_PRTCAP_HOST	1
162 #define DWC3_GCTL_PRTCAP_DEVICE	2
163 #define DWC3_GCTL_PRTCAP_OTG	3
164 
165 #define DWC3_GCTL_CORESOFTRESET		(1 << 11)
166 #define DWC3_GCTL_SOFITPSYNC		(1 << 10)
167 #define DWC3_GCTL_SCALEDOWN(n)		((n) << 4)
168 #define DWC3_GCTL_SCALEDOWN_MASK	DWC3_GCTL_SCALEDOWN(3)
169 #define DWC3_GCTL_DISSCRAMBLE		(1 << 3)
170 #define DWC3_GCTL_U2EXIT_LFPS		(1 << 2)
171 #define DWC3_GCTL_GBLHIBERNATIONEN	(1 << 1)
172 #define DWC3_GCTL_DSBLCLKGTNG		(1 << 0)
173 
174 /* Global USB2 PHY Configuration Register */
175 #define DWC3_GUSB2PHYCFG_PHYSOFTRST	(1 << 31)
176 #define DWC3_GUSB2PHYCFG_SUSPHY		(1 << 6)
177 #define DWC3_GUSB2PHYCFG_ULPI_UTMI	(1 << 4)
178 
179 /* Global USB2 PHY Vendor Control Register */
180 #define DWC3_GUSB2PHYACC_NEWREGREQ	(1 << 25)
181 #define DWC3_GUSB2PHYACC_BUSY		(1 << 23)
182 #define DWC3_GUSB2PHYACC_WRITE		(1 << 22)
183 #define DWC3_GUSB2PHYACC_ADDR(n)	(n << 16)
184 #define DWC3_GUSB2PHYACC_EXTEND_ADDR(n)	(n << 8)
185 #define DWC3_GUSB2PHYACC_DATA(n)	(n & 0xff)
186 
187 /* Global USB3 PIPE Control Register */
188 #define DWC3_GUSB3PIPECTL_PHYSOFTRST	(1 << 31)
189 #define DWC3_GUSB3PIPECTL_U2SSINP3OK	(1 << 29)
190 #define DWC3_GUSB3PIPECTL_REQP1P2P3	(1 << 24)
191 #define DWC3_GUSB3PIPECTL_DEP1P2P3(n)	((n) << 19)
192 #define DWC3_GUSB3PIPECTL_DEP1P2P3_MASK	DWC3_GUSB3PIPECTL_DEP1P2P3(7)
193 #define DWC3_GUSB3PIPECTL_DEP1P2P3_EN	DWC3_GUSB3PIPECTL_DEP1P2P3(1)
194 #define DWC3_GUSB3PIPECTL_DEPOCHANGE	(1 << 18)
195 #define DWC3_GUSB3PIPECTL_SUSPHY	(1 << 17)
196 #define DWC3_GUSB3PIPECTL_LFPSFILT	(1 << 9)
197 #define DWC3_GUSB3PIPECTL_RX_DETOPOLL	(1 << 8)
198 #define DWC3_GUSB3PIPECTL_TX_DEEPH_MASK	DWC3_GUSB3PIPECTL_TX_DEEPH(3)
199 #define DWC3_GUSB3PIPECTL_TX_DEEPH(n)	((n) << 1)
200 
201 /* Global TX Fifo Size Register */
202 #define DWC3_GTXFIFOSIZ_TXFDEF(n)	((n) & 0xffff)
203 #define DWC3_GTXFIFOSIZ_TXFSTADDR(n)	((n) & 0xffff0000)
204 
205 /* Global Event Size Registers */
206 #define DWC3_GEVNTSIZ_INTMASK		(1 << 31)
207 #define DWC3_GEVNTSIZ_SIZE(n)		((n) & 0xffff)
208 
209 /* Global HWPARAMS1 Register */
210 #define DWC3_GHWPARAMS1_EN_PWROPT(n)	(((n) & (3 << 24)) >> 24)
211 #define DWC3_GHWPARAMS1_EN_PWROPT_NO	0
212 #define DWC3_GHWPARAMS1_EN_PWROPT_CLK	1
213 #define DWC3_GHWPARAMS1_EN_PWROPT_HIB	2
214 #define DWC3_GHWPARAMS1_PWROPT(n)	((n) << 24)
215 #define DWC3_GHWPARAMS1_PWROPT_MASK	DWC3_GHWPARAMS1_PWROPT(3)
216 
217 /* Global HWPARAMS3 Register */
218 #define DWC3_GHWPARAMS3_SSPHY_IFC(n)		((n) & 3)
219 #define DWC3_GHWPARAMS3_SSPHY_IFC_DIS		0
220 #define DWC3_GHWPARAMS3_SSPHY_IFC_ENA		1
221 #define DWC3_GHWPARAMS3_HSPHY_IFC(n)		(((n) & (3 << 2)) >> 2)
222 #define DWC3_GHWPARAMS3_HSPHY_IFC_DIS		0
223 #define DWC3_GHWPARAMS3_HSPHY_IFC_UTMI		1
224 #define DWC3_GHWPARAMS3_HSPHY_IFC_ULPI		2
225 #define DWC3_GHWPARAMS3_HSPHY_IFC_UTMI_ULPI	3
226 #define DWC3_GHWPARAMS3_FSPHY_IFC(n)		(((n) & (3 << 4)) >> 4)
227 #define DWC3_GHWPARAMS3_FSPHY_IFC_DIS		0
228 #define DWC3_GHWPARAMS3_FSPHY_IFC_ENA		1
229 
230 /* Global HWPARAMS4 Register */
231 #define DWC3_GHWPARAMS4_HIBER_SCRATCHBUFS(n)	(((n) & (0x0f << 13)) >> 13)
232 #define DWC3_MAX_HIBER_SCRATCHBUFS		15
233 
234 /* Global HWPARAMS6 Register */
235 #define DWC3_GHWPARAMS6_EN_FPGA			(1 << 7)
236 
237 /* Device Configuration Register */
238 #define DWC3_DCFG_DEVADDR(addr)	((addr) << 3)
239 #define DWC3_DCFG_DEVADDR_MASK	DWC3_DCFG_DEVADDR(0x7f)
240 
241 #define DWC3_DCFG_SPEED_MASK	(7 << 0)
242 #define DWC3_DCFG_SUPERSPEED	(4 << 0)
243 #define DWC3_DCFG_HIGHSPEED	(0 << 0)
244 #define DWC3_DCFG_FULLSPEED2	(1 << 0)
245 #define DWC3_DCFG_LOWSPEED	(2 << 0)
246 #define DWC3_DCFG_FULLSPEED1	(3 << 0)
247 
248 #define DWC3_DCFG_LPM_CAP	(1 << 22)
249 
250 /* Device Control Register */
251 #define DWC3_DCTL_RUN_STOP	(1 << 31)
252 #define DWC3_DCTL_CSFTRST	(1 << 30)
253 #define DWC3_DCTL_LSFTRST	(1 << 29)
254 
255 #define DWC3_DCTL_HIRD_THRES_MASK	(0x1f << 24)
256 #define DWC3_DCTL_HIRD_THRES(n)	((n) << 24)
257 
258 #define DWC3_DCTL_APPL1RES	(1 << 23)
259 
260 /* These apply for core versions 1.87a and earlier */
261 #define DWC3_DCTL_TRGTULST_MASK		(0x0f << 17)
262 #define DWC3_DCTL_TRGTULST(n)		((n) << 17)
263 #define DWC3_DCTL_TRGTULST_U2		(DWC3_DCTL_TRGTULST(2))
264 #define DWC3_DCTL_TRGTULST_U3		(DWC3_DCTL_TRGTULST(3))
265 #define DWC3_DCTL_TRGTULST_SS_DIS	(DWC3_DCTL_TRGTULST(4))
266 #define DWC3_DCTL_TRGTULST_RX_DET	(DWC3_DCTL_TRGTULST(5))
267 #define DWC3_DCTL_TRGTULST_SS_INACT	(DWC3_DCTL_TRGTULST(6))
268 
269 /* These apply for core versions 1.94a and later */
270 #define DWC3_DCTL_LPM_ERRATA_MASK	DWC3_DCTL_LPM_ERRATA(0xf)
271 #define DWC3_DCTL_LPM_ERRATA(n)		((n) << 20)
272 
273 #define DWC3_DCTL_KEEP_CONNECT		(1 << 19)
274 #define DWC3_DCTL_L1_HIBER_EN		(1 << 18)
275 #define DWC3_DCTL_CRS			(1 << 17)
276 #define DWC3_DCTL_CSS			(1 << 16)
277 
278 #define DWC3_DCTL_INITU2ENA		(1 << 12)
279 #define DWC3_DCTL_ACCEPTU2ENA		(1 << 11)
280 #define DWC3_DCTL_INITU1ENA		(1 << 10)
281 #define DWC3_DCTL_ACCEPTU1ENA		(1 << 9)
282 #define DWC3_DCTL_TSTCTRL_MASK		(0xf << 1)
283 
284 #define DWC3_DCTL_ULSTCHNGREQ_MASK	(0x0f << 5)
285 #define DWC3_DCTL_ULSTCHNGREQ(n) (((n) << 5) & DWC3_DCTL_ULSTCHNGREQ_MASK)
286 
287 #define DWC3_DCTL_ULSTCHNG_NO_ACTION	(DWC3_DCTL_ULSTCHNGREQ(0))
288 #define DWC3_DCTL_ULSTCHNG_SS_DISABLED	(DWC3_DCTL_ULSTCHNGREQ(4))
289 #define DWC3_DCTL_ULSTCHNG_RX_DETECT	(DWC3_DCTL_ULSTCHNGREQ(5))
290 #define DWC3_DCTL_ULSTCHNG_SS_INACTIVE	(DWC3_DCTL_ULSTCHNGREQ(6))
291 #define DWC3_DCTL_ULSTCHNG_RECOVERY	(DWC3_DCTL_ULSTCHNGREQ(8))
292 #define DWC3_DCTL_ULSTCHNG_COMPLIANCE	(DWC3_DCTL_ULSTCHNGREQ(10))
293 #define DWC3_DCTL_ULSTCHNG_LOOPBACK	(DWC3_DCTL_ULSTCHNGREQ(11))
294 
295 /* Device Event Enable Register */
296 #define DWC3_DEVTEN_VNDRDEVTSTRCVEDEN	(1 << 12)
297 #define DWC3_DEVTEN_EVNTOVERFLOWEN	(1 << 11)
298 #define DWC3_DEVTEN_CMDCMPLTEN		(1 << 10)
299 #define DWC3_DEVTEN_ERRTICERREN		(1 << 9)
300 #define DWC3_DEVTEN_SOFEN		(1 << 7)
301 #define DWC3_DEVTEN_EOPFEN		(1 << 6)
302 #define DWC3_DEVTEN_HIBERNATIONREQEVTEN	(1 << 5)
303 #define DWC3_DEVTEN_WKUPEVTEN		(1 << 4)
304 #define DWC3_DEVTEN_ULSTCNGEN		(1 << 3)
305 #define DWC3_DEVTEN_CONNECTDONEEN	(1 << 2)
306 #define DWC3_DEVTEN_USBRSTEN		(1 << 1)
307 #define DWC3_DEVTEN_DISCONNEVTEN	(1 << 0)
308 
309 /* Device Status Register */
310 #define DWC3_DSTS_DCNRD			(1 << 29)
311 
312 /* This applies for core versions 1.87a and earlier */
313 #define DWC3_DSTS_PWRUPREQ		(1 << 24)
314 
315 /* These apply for core versions 1.94a and later */
316 #define DWC3_DSTS_RSS			(1 << 25)
317 #define DWC3_DSTS_SSS			(1 << 24)
318 
319 #define DWC3_DSTS_COREIDLE		(1 << 23)
320 #define DWC3_DSTS_DEVCTRLHLT		(1 << 22)
321 
322 #define DWC3_DSTS_USBLNKST_MASK		(0x0f << 18)
323 #define DWC3_DSTS_USBLNKST(n)		(((n) & DWC3_DSTS_USBLNKST_MASK) >> 18)
324 
325 #define DWC3_DSTS_RXFIFOEMPTY		(1 << 17)
326 
327 #define DWC3_DSTS_SOFFN_MASK		(0x3fff << 3)
328 #define DWC3_DSTS_SOFFN(n)		(((n) & DWC3_DSTS_SOFFN_MASK) >> 3)
329 
330 #define DWC3_DSTS_CONNECTSPD		(7 << 0)
331 
332 #define DWC3_DSTS_SUPERSPEED		(4 << 0)
333 #define DWC3_DSTS_HIGHSPEED		(0 << 0)
334 #define DWC3_DSTS_FULLSPEED2		(1 << 0)
335 #define DWC3_DSTS_LOWSPEED		(2 << 0)
336 #define DWC3_DSTS_FULLSPEED1		(3 << 0)
337 
338 /* Device Generic Command Register */
339 #define DWC3_DGCMD_SET_LMP		0x01
340 #define DWC3_DGCMD_SET_PERIODIC_PAR	0x02
341 #define DWC3_DGCMD_XMIT_FUNCTION	0x03
342 
343 /* These apply for core versions 1.94a and later */
344 #define DWC3_DGCMD_SET_SCRATCHPAD_ADDR_LO	0x04
345 #define DWC3_DGCMD_SET_SCRATCHPAD_ADDR_HI	0x05
346 
347 #define DWC3_DGCMD_SELECTED_FIFO_FLUSH	0x09
348 #define DWC3_DGCMD_ALL_FIFO_FLUSH	0x0a
349 #define DWC3_DGCMD_SET_ENDPOINT_NRDY	0x0c
350 #define DWC3_DGCMD_RUN_SOC_BUS_LOOPBACK	0x10
351 
352 #define DWC3_DGCMD_STATUS(n)		(((n) >> 12) & 0x0F)
353 #define DWC3_DGCMD_CMDACT		(1 << 10)
354 #define DWC3_DGCMD_CMDIOC		(1 << 8)
355 
356 /* Device Generic Command Parameter Register */
357 #define DWC3_DGCMDPAR_FORCE_LINKPM_ACCEPT	(1 << 0)
358 #define DWC3_DGCMDPAR_FIFO_NUM(n)		((n) << 0)
359 #define DWC3_DGCMDPAR_RX_FIFO			(0 << 5)
360 #define DWC3_DGCMDPAR_TX_FIFO			(1 << 5)
361 #define DWC3_DGCMDPAR_LOOPBACK_DIS		(0 << 0)
362 #define DWC3_DGCMDPAR_LOOPBACK_ENA		(1 << 0)
363 
364 /* Device Endpoint Command Register */
365 #define DWC3_DEPCMD_PARAM_SHIFT		16
366 #define DWC3_DEPCMD_PARAM(x)		((x) << DWC3_DEPCMD_PARAM_SHIFT)
367 #define DWC3_DEPCMD_GET_RSC_IDX(x)	(((x) >> DWC3_DEPCMD_PARAM_SHIFT) & 0x7f)
368 #define DWC3_DEPCMD_STATUS(x)		(((x) >> 12) & 0x0F)
369 #define DWC3_DEPCMD_HIPRI_FORCERM	(1 << 11)
370 #define DWC3_DEPCMD_CMDACT		(1 << 10)
371 #define DWC3_DEPCMD_CMDIOC		(1 << 8)
372 
373 #define DWC3_DEPCMD_DEPSTARTCFG		(0x09 << 0)
374 #define DWC3_DEPCMD_ENDTRANSFER		(0x08 << 0)
375 #define DWC3_DEPCMD_UPDATETRANSFER	(0x07 << 0)
376 #define DWC3_DEPCMD_STARTTRANSFER	(0x06 << 0)
377 #define DWC3_DEPCMD_CLEARSTALL		(0x05 << 0)
378 #define DWC3_DEPCMD_SETSTALL		(0x04 << 0)
379 /* This applies for core versions 1.90a and earlier */
380 #define DWC3_DEPCMD_GETSEQNUMBER	(0x03 << 0)
381 /* This applies for core versions 1.94a and later */
382 #define DWC3_DEPCMD_GETEPSTATE		(0x03 << 0)
383 #define DWC3_DEPCMD_SETTRANSFRESOURCE	(0x02 << 0)
384 #define DWC3_DEPCMD_SETEPCONFIG		(0x01 << 0)
385 
386 /* The EP number goes 0..31 so ep0 is always out and ep1 is always in */
387 #define DWC3_DALEPENA_EP(n)		(1 << n)
388 
389 #define DWC3_DEPCMD_TYPE_CONTROL	0
390 #define DWC3_DEPCMD_TYPE_ISOC		1
391 #define DWC3_DEPCMD_TYPE_BULK		2
392 #define DWC3_DEPCMD_TYPE_INTR		3
393 
394 /* Structures */
395 
396 struct dwc3_trb;
397 
398 /**
399  * struct dwc3_event_buffer - Software event buffer representation
400  * @buf: _THE_ buffer
401  * @length: size of this buffer
402  * @lpos: event offset
403  * @count: cache of last read event count register
404  * @flags: flags related to this event buffer
405  * @dma: dma_addr_t
406  * @dwc: pointer to DWC controller
407  */
408 struct dwc3_event_buffer {
409 	void			*buf;
410 	unsigned		length;
411 	unsigned int		lpos;
412 	unsigned int		count;
413 	unsigned int		flags;
414 
415 #define DWC3_EVENT_PENDING	BIT(0)
416 
417 	dma_addr_t		dma;
418 
419 	struct dwc3		*dwc;
420 };
421 
422 #define DWC3_EP_FLAG_STALLED	(1 << 0)
423 #define DWC3_EP_FLAG_WEDGED	(1 << 1)
424 
425 #define DWC3_EP_DIRECTION_TX	true
426 #define DWC3_EP_DIRECTION_RX	false
427 
428 #define DWC3_TRB_NUM		32
429 #define DWC3_TRB_MASK		(DWC3_TRB_NUM - 1)
430 
431 /**
432  * struct dwc3_ep - device side endpoint representation
433  * @endpoint: usb endpoint
434  * @request_list: list of requests for this endpoint
435  * @req_queued: list of requests on this ep which have TRBs setup
436  * @trb_pool: array of transaction buffers
437  * @trb_pool_dma: dma address of @trb_pool
438  * @free_slot: next slot which is going to be used
439  * @busy_slot: first slot which is owned by HW
440  * @desc: usb_endpoint_descriptor pointer
441  * @dwc: pointer to DWC controller
442  * @saved_state: ep state saved during hibernation
443  * @flags: endpoint flags (wedged, stalled, ...)
444  * @number: endpoint number (1 - 15)
445  * @type: set to bmAttributes & USB_ENDPOINT_XFERTYPE_MASK
446  * @resource_index: Resource transfer index
447  * @interval: the interval on which the ISOC transfer is started
448  * @name: a human readable name e.g. ep1out-bulk
449  * @direction: true for TX, false for RX
450  * @stream_capable: true when streams are enabled
451  */
452 struct dwc3_ep {
453 	struct usb_ep		endpoint;
454 	struct list_head	request_list;
455 	struct list_head	req_queued;
456 
457 	struct dwc3_trb		*trb_pool;
458 	dma_addr_t		trb_pool_dma;
459 	u32			free_slot;
460 	u32			busy_slot;
461 	const struct usb_ss_ep_comp_descriptor *comp_desc;
462 	struct dwc3		*dwc;
463 
464 	u32			saved_state;
465 	unsigned		flags;
466 #define DWC3_EP_ENABLED		(1 << 0)
467 #define DWC3_EP_STALL		(1 << 1)
468 #define DWC3_EP_WEDGE		(1 << 2)
469 #define DWC3_EP_BUSY		(1 << 4)
470 #define DWC3_EP_PENDING_REQUEST	(1 << 5)
471 #define DWC3_EP_MISSED_ISOC	(1 << 6)
472 
473 	/* This last one is specific to EP0 */
474 #define DWC3_EP0_DIR_IN		(1 << 31)
475 
476 	u8			number;
477 	u8			type;
478 	u8			resource_index;
479 	u32			interval;
480 
481 	char			name[20];
482 
483 	unsigned		direction:1;
484 	unsigned		stream_capable:1;
485 };
486 
487 enum dwc3_phy {
488 	DWC3_PHY_UNKNOWN = 0,
489 	DWC3_PHY_USB3,
490 	DWC3_PHY_USB2,
491 };
492 
493 enum dwc3_ep0_next {
494 	DWC3_EP0_UNKNOWN = 0,
495 	DWC3_EP0_COMPLETE,
496 	DWC3_EP0_NRDY_DATA,
497 	DWC3_EP0_NRDY_STATUS,
498 };
499 
500 enum dwc3_ep0_state {
501 	EP0_UNCONNECTED		= 0,
502 	EP0_SETUP_PHASE,
503 	EP0_DATA_PHASE,
504 	EP0_STATUS_PHASE,
505 };
506 
507 enum dwc3_link_state {
508 	/* In SuperSpeed */
509 	DWC3_LINK_STATE_U0		= 0x00, /* in HS, means ON */
510 	DWC3_LINK_STATE_U1		= 0x01,
511 	DWC3_LINK_STATE_U2		= 0x02, /* in HS, means SLEEP */
512 	DWC3_LINK_STATE_U3		= 0x03, /* in HS, means SUSPEND */
513 	DWC3_LINK_STATE_SS_DIS		= 0x04,
514 	DWC3_LINK_STATE_RX_DET		= 0x05, /* in HS, means Early Suspend */
515 	DWC3_LINK_STATE_SS_INACT	= 0x06,
516 	DWC3_LINK_STATE_POLL		= 0x07,
517 	DWC3_LINK_STATE_RECOV		= 0x08,
518 	DWC3_LINK_STATE_HRESET		= 0x09,
519 	DWC3_LINK_STATE_CMPLY		= 0x0a,
520 	DWC3_LINK_STATE_LPBK		= 0x0b,
521 	DWC3_LINK_STATE_RESET		= 0x0e,
522 	DWC3_LINK_STATE_RESUME		= 0x0f,
523 	DWC3_LINK_STATE_MASK		= 0x0f,
524 };
525 
526 /* TRB Length, PCM and Status */
527 #define DWC3_TRB_SIZE_MASK	(0x00ffffff)
528 #define DWC3_TRB_SIZE_LENGTH(n)	((n) & DWC3_TRB_SIZE_MASK)
529 #define DWC3_TRB_SIZE_PCM1(n)	(((n) & 0x03) << 24)
530 #define DWC3_TRB_SIZE_TRBSTS(n)	(((n) & (0x0f << 28)) >> 28)
531 
532 #define DWC3_TRBSTS_OK			0
533 #define DWC3_TRBSTS_MISSED_ISOC		1
534 #define DWC3_TRBSTS_SETUP_PENDING	2
535 #define DWC3_TRB_STS_XFER_IN_PROG	4
536 
537 /* TRB Control */
538 #define DWC3_TRB_CTRL_HWO		(1 << 0)
539 #define DWC3_TRB_CTRL_LST		(1 << 1)
540 #define DWC3_TRB_CTRL_CHN		(1 << 2)
541 #define DWC3_TRB_CTRL_CSP		(1 << 3)
542 #define DWC3_TRB_CTRL_TRBCTL(n)		(((n) & 0x3f) << 4)
543 #define DWC3_TRB_CTRL_ISP_IMI		(1 << 10)
544 #define DWC3_TRB_CTRL_IOC		(1 << 11)
545 #define DWC3_TRB_CTRL_SID_SOFN(n)	(((n) & 0xffff) << 14)
546 
547 #define DWC3_TRBCTL_NORMAL		DWC3_TRB_CTRL_TRBCTL(1)
548 #define DWC3_TRBCTL_CONTROL_SETUP	DWC3_TRB_CTRL_TRBCTL(2)
549 #define DWC3_TRBCTL_CONTROL_STATUS2	DWC3_TRB_CTRL_TRBCTL(3)
550 #define DWC3_TRBCTL_CONTROL_STATUS3	DWC3_TRB_CTRL_TRBCTL(4)
551 #define DWC3_TRBCTL_CONTROL_DATA	DWC3_TRB_CTRL_TRBCTL(5)
552 #define DWC3_TRBCTL_ISOCHRONOUS_FIRST	DWC3_TRB_CTRL_TRBCTL(6)
553 #define DWC3_TRBCTL_ISOCHRONOUS		DWC3_TRB_CTRL_TRBCTL(7)
554 #define DWC3_TRBCTL_LINK_TRB		DWC3_TRB_CTRL_TRBCTL(8)
555 
556 /**
557  * struct dwc3_trb - transfer request block (hw format)
558  * @bpl: DW0-3
559  * @bph: DW4-7
560  * @size: DW8-B
561  * @trl: DWC-F
562  */
563 struct dwc3_trb {
564 	u32		bpl;
565 	u32		bph;
566 	u32		size;
567 	u32		ctrl;
568 } __packed;
569 
570 /**
571  * dwc3_hwparams - copy of HWPARAMS registers
572  * @hwparams0 - GHWPARAMS0
573  * @hwparams1 - GHWPARAMS1
574  * @hwparams2 - GHWPARAMS2
575  * @hwparams3 - GHWPARAMS3
576  * @hwparams4 - GHWPARAMS4
577  * @hwparams5 - GHWPARAMS5
578  * @hwparams6 - GHWPARAMS6
579  * @hwparams7 - GHWPARAMS7
580  * @hwparams8 - GHWPARAMS8
581  */
582 struct dwc3_hwparams {
583 	u32	hwparams0;
584 	u32	hwparams1;
585 	u32	hwparams2;
586 	u32	hwparams3;
587 	u32	hwparams4;
588 	u32	hwparams5;
589 	u32	hwparams6;
590 	u32	hwparams7;
591 	u32	hwparams8;
592 };
593 
594 /* HWPARAMS0 */
595 #define DWC3_MODE(n)		((n) & 0x7)
596 
597 #define DWC3_MDWIDTH(n)		(((n) & 0xff00) >> 8)
598 
599 /* HWPARAMS1 */
600 #define DWC3_NUM_INT(n)		(((n) & (0x3f << 15)) >> 15)
601 
602 /* HWPARAMS3 */
603 #define DWC3_NUM_IN_EPS_MASK	(0x1f << 18)
604 #define DWC3_NUM_EPS_MASK	(0x3f << 12)
605 #define DWC3_NUM_EPS(p)		(((p)->hwparams3 &		\
606 			(DWC3_NUM_EPS_MASK)) >> 12)
607 #define DWC3_NUM_IN_EPS(p)	(((p)->hwparams3 &		\
608 			(DWC3_NUM_IN_EPS_MASK)) >> 18)
609 
610 /* HWPARAMS7 */
611 #define DWC3_RAM1_DEPTH(n)	((n) & 0xffff)
612 
613 struct dwc3_request {
614 	struct usb_request	request;
615 	struct list_head	list;
616 	struct dwc3_ep		*dep;
617 	u32			start_slot;
618 
619 	u8			epnum;
620 	struct dwc3_trb		*trb;
621 	dma_addr_t		trb_dma;
622 
623 	unsigned		direction:1;
624 	unsigned		mapped:1;
625 	unsigned		queued:1;
626 };
627 
628 /*
629  * struct dwc3_scratchpad_array - hibernation scratchpad array
630  * (format defined by hw)
631  */
632 struct dwc3_scratchpad_array {
633 	__le64	dma_adr[DWC3_MAX_HIBER_SCRATCHBUFS];
634 };
635 
636 /**
637  * struct dwc3 - representation of our controller
638  * @ctrl_req: usb control request which is used for ep0
639  * @ep0_trb: trb which is used for the ctrl_req
640  * @ep0_bounce: bounce buffer for ep0
641  * @setup_buf: used while precessing STD USB requests
642  * @ctrl_req_addr: dma address of ctrl_req
643  * @ep0_trb: dma address of ep0_trb
644  * @ep0_usb_req: dummy req used while handling STD USB requests
645  * @ep0_bounce_addr: dma address of ep0_bounce
646  * @scratch_addr: dma address of scratchbuf
647  * @lock: for synchronizing
648  * @dev: pointer to our struct device
649  * @xhci: pointer to our xHCI child
650  * @event_buffer_list: a list of event buffers
651  * @gadget: device side representation of the peripheral controller
652  * @gadget_driver: pointer to the gadget driver
653  * @regs: base address for our registers
654  * @regs_size: address space size
655  * @nr_scratch: number of scratch buffers
656  * @num_event_buffers: calculated number of event buffers
657  * @u1u2: only used on revisions <1.83a for workaround
658  * @maximum_speed: maximum speed requested (mainly for testing purposes)
659  * @revision: revision register contents
660  * @dr_mode: requested mode of operation
661  * @usb2_phy: pointer to USB2 PHY
662  * @usb3_phy: pointer to USB3 PHY
663  * @usb2_generic_phy: pointer to USB2 PHY
664  * @usb3_generic_phy: pointer to USB3 PHY
665  * @ulpi: pointer to ulpi interface
666  * @dcfg: saved contents of DCFG register
667  * @gctl: saved contents of GCTL register
668  * @isoch_delay: wValue from Set Isochronous Delay request;
669  * @u2sel: parameter from Set SEL request.
670  * @u2pel: parameter from Set SEL request.
671  * @u1sel: parameter from Set SEL request.
672  * @u1pel: parameter from Set SEL request.
673  * @num_out_eps: number of out endpoints
674  * @num_in_eps: number of in endpoints
675  * @ep0_next_event: hold the next expected event
676  * @ep0state: state of endpoint zero
677  * @link_state: link state
678  * @speed: device speed (super, high, full, low)
679  * @mem: points to start of memory which is used for this struct.
680  * @hwparams: copy of hwparams registers
681  * @root: debugfs root folder pointer
682  * @regset: debugfs pointer to regdump file
683  * @test_mode: true when we're entering a USB test mode
684  * @test_mode_nr: test feature selector
685  * @lpm_nyet_threshold: LPM NYET response threshold
686  * @hird_threshold: HIRD threshold
687  * @hsphy_interface: "utmi" or "ulpi"
688  * @delayed_status: true when gadget driver asks for delayed status
689  * @ep0_bounced: true when we used bounce buffer
690  * @ep0_expect_in: true when we expect a DATA IN transfer
691  * @has_hibernation: true when dwc3 was configured with Hibernation
692  * @has_lpm_erratum: true when core was configured with LPM Erratum. Note that
693  *			there's now way for software to detect this in runtime.
694  * @is_utmi_l1_suspend: the core asserts output signal
695  * 	0	- utmi_sleep_n
696  * 	1	- utmi_l1_suspend_n
697  * @is_fpga: true when we are using the FPGA board
698  * @needs_fifo_resize: not all users might want fifo resizing, flag it
699  * @pullups_connected: true when Run/Stop bit is set
700  * @resize_fifos: tells us it's ok to reconfigure our TxFIFO sizes.
701  * @setup_packet_pending: true when there's a Setup Packet in FIFO. Workaround
702  * @start_config_issued: true when StartConfig command has been issued
703  * @three_stage_setup: set if we perform a three phase setup
704  * @usb3_lpm_capable: set if hadrware supports Link Power Management
705  * @disable_scramble_quirk: set if we enable the disable scramble quirk
706  * @u2exit_lfps_quirk: set if we enable u2exit lfps quirk
707  * @u2ss_inp3_quirk: set if we enable P3 OK for U2/SS Inactive quirk
708  * @req_p1p2p3_quirk: set if we enable request p1p2p3 quirk
709  * @del_p1p2p3_quirk: set if we enable delay p1p2p3 quirk
710  * @del_phy_power_chg_quirk: set if we enable delay phy power change quirk
711  * @lfps_filter_quirk: set if we enable LFPS filter quirk
712  * @rx_detect_poll_quirk: set if we enable rx_detect to polling lfps quirk
713  * @dis_u3_susphy_quirk: set if we disable usb3 suspend phy
714  * @dis_u2_susphy_quirk: set if we disable usb2 suspend phy
715  * @tx_de_emphasis_quirk: set if we enable Tx de-emphasis quirk
716  * @tx_de_emphasis: Tx de-emphasis value
717  * 	0	- -6dB de-emphasis
718  * 	1	- -3.5dB de-emphasis
719  * 	2	- No de-emphasis
720  * 	3	- Reserved
721  */
722 struct dwc3 {
723 	struct usb_ctrlrequest	*ctrl_req;
724 	struct dwc3_trb		*ep0_trb;
725 	void			*ep0_bounce;
726 	void			*scratchbuf;
727 	u8			*setup_buf;
728 	dma_addr_t		ctrl_req_addr;
729 	dma_addr_t		ep0_trb_addr;
730 	dma_addr_t		ep0_bounce_addr;
731 	dma_addr_t		scratch_addr;
732 	struct dwc3_request	ep0_usb_req;
733 
734 	/* device lock */
735 	spinlock_t		lock;
736 
737 	struct device		*dev;
738 
739 	struct platform_device	*xhci;
740 	struct resource		xhci_resources[DWC3_XHCI_RESOURCES_NUM];
741 
742 	struct dwc3_event_buffer **ev_buffs;
743 	struct dwc3_ep		*eps[DWC3_ENDPOINTS_NUM];
744 
745 	struct usb_gadget	gadget;
746 	struct usb_gadget_driver *gadget_driver;
747 
748 	struct usb_phy		*usb2_phy;
749 	struct usb_phy		*usb3_phy;
750 
751 	struct phy		*usb2_generic_phy;
752 	struct phy		*usb3_generic_phy;
753 
754 	struct ulpi		*ulpi;
755 
756 	void __iomem		*regs;
757 	size_t			regs_size;
758 
759 	enum usb_dr_mode	dr_mode;
760 
761 	/* used for suspend/resume */
762 	u32			dcfg;
763 	u32			gctl;
764 
765 	u32			nr_scratch;
766 	u32			num_event_buffers;
767 	u32			u1u2;
768 	u32			maximum_speed;
769 	u32			revision;
770 
771 #define DWC3_REVISION_173A	0x5533173a
772 #define DWC3_REVISION_175A	0x5533175a
773 #define DWC3_REVISION_180A	0x5533180a
774 #define DWC3_REVISION_183A	0x5533183a
775 #define DWC3_REVISION_185A	0x5533185a
776 #define DWC3_REVISION_187A	0x5533187a
777 #define DWC3_REVISION_188A	0x5533188a
778 #define DWC3_REVISION_190A	0x5533190a
779 #define DWC3_REVISION_194A	0x5533194a
780 #define DWC3_REVISION_200A	0x5533200a
781 #define DWC3_REVISION_202A	0x5533202a
782 #define DWC3_REVISION_210A	0x5533210a
783 #define DWC3_REVISION_220A	0x5533220a
784 #define DWC3_REVISION_230A	0x5533230a
785 #define DWC3_REVISION_240A	0x5533240a
786 #define DWC3_REVISION_250A	0x5533250a
787 #define DWC3_REVISION_260A	0x5533260a
788 #define DWC3_REVISION_270A	0x5533270a
789 #define DWC3_REVISION_280A	0x5533280a
790 
791 	enum dwc3_ep0_next	ep0_next_event;
792 	enum dwc3_ep0_state	ep0state;
793 	enum dwc3_link_state	link_state;
794 
795 	u16			isoch_delay;
796 	u16			u2sel;
797 	u16			u2pel;
798 	u8			u1sel;
799 	u8			u1pel;
800 
801 	u8			speed;
802 
803 	u8			num_out_eps;
804 	u8			num_in_eps;
805 
806 	void			*mem;
807 
808 	struct dwc3_hwparams	hwparams;
809 	struct dentry		*root;
810 	struct debugfs_regset32	*regset;
811 
812 	u8			test_mode;
813 	u8			test_mode_nr;
814 	u8			lpm_nyet_threshold;
815 	u8			hird_threshold;
816 
817 	const char		*hsphy_interface;
818 
819 	unsigned		delayed_status:1;
820 	unsigned		ep0_bounced:1;
821 	unsigned		ep0_expect_in:1;
822 	unsigned		has_hibernation:1;
823 	unsigned		has_lpm_erratum:1;
824 	unsigned		is_utmi_l1_suspend:1;
825 	unsigned		is_fpga:1;
826 	unsigned		needs_fifo_resize:1;
827 	unsigned		pullups_connected:1;
828 	unsigned		resize_fifos:1;
829 	unsigned		setup_packet_pending:1;
830 	unsigned		start_config_issued:1;
831 	unsigned		three_stage_setup:1;
832 	unsigned		usb3_lpm_capable:1;
833 
834 	unsigned		disable_scramble_quirk:1;
835 	unsigned		u2exit_lfps_quirk:1;
836 	unsigned		u2ss_inp3_quirk:1;
837 	unsigned		req_p1p2p3_quirk:1;
838 	unsigned                del_p1p2p3_quirk:1;
839 	unsigned		del_phy_power_chg_quirk:1;
840 	unsigned		lfps_filter_quirk:1;
841 	unsigned		rx_detect_poll_quirk:1;
842 	unsigned		dis_u3_susphy_quirk:1;
843 	unsigned		dis_u2_susphy_quirk:1;
844 
845 	unsigned		tx_de_emphasis_quirk:1;
846 	unsigned		tx_de_emphasis:2;
847 };
848 
849 /* -------------------------------------------------------------------------- */
850 
851 /* -------------------------------------------------------------------------- */
852 
853 struct dwc3_event_type {
854 	u32	is_devspec:1;
855 	u32	type:7;
856 	u32	reserved8_31:24;
857 } __packed;
858 
859 #define DWC3_DEPEVT_XFERCOMPLETE	0x01
860 #define DWC3_DEPEVT_XFERINPROGRESS	0x02
861 #define DWC3_DEPEVT_XFERNOTREADY	0x03
862 #define DWC3_DEPEVT_RXTXFIFOEVT		0x04
863 #define DWC3_DEPEVT_STREAMEVT		0x06
864 #define DWC3_DEPEVT_EPCMDCMPLT		0x07
865 
866 /**
867  * struct dwc3_event_depvt - Device Endpoint Events
868  * @one_bit: indicates this is an endpoint event (not used)
869  * @endpoint_number: number of the endpoint
870  * @endpoint_event: The event we have:
871  *	0x00	- Reserved
872  *	0x01	- XferComplete
873  *	0x02	- XferInProgress
874  *	0x03	- XferNotReady
875  *	0x04	- RxTxFifoEvt (IN->Underrun, OUT->Overrun)
876  *	0x05	- Reserved
877  *	0x06	- StreamEvt
878  *	0x07	- EPCmdCmplt
879  * @reserved11_10: Reserved, don't use.
880  * @status: Indicates the status of the event. Refer to databook for
881  *	more information.
882  * @parameters: Parameters of the current event. Refer to databook for
883  *	more information.
884  */
885 struct dwc3_event_depevt {
886 	u32	one_bit:1;
887 	u32	endpoint_number:5;
888 	u32	endpoint_event:4;
889 	u32	reserved11_10:2;
890 	u32	status:4;
891 
892 /* Within XferNotReady */
893 #define DEPEVT_STATUS_TRANSFER_ACTIVE	(1 << 3)
894 
895 /* Within XferComplete */
896 #define DEPEVT_STATUS_BUSERR	(1 << 0)
897 #define DEPEVT_STATUS_SHORT	(1 << 1)
898 #define DEPEVT_STATUS_IOC	(1 << 2)
899 #define DEPEVT_STATUS_LST	(1 << 3)
900 
901 /* Stream event only */
902 #define DEPEVT_STREAMEVT_FOUND		1
903 #define DEPEVT_STREAMEVT_NOTFOUND	2
904 
905 /* Control-only Status */
906 #define DEPEVT_STATUS_CONTROL_DATA	1
907 #define DEPEVT_STATUS_CONTROL_STATUS	2
908 
909 	u32	parameters:16;
910 } __packed;
911 
912 /**
913  * struct dwc3_event_devt - Device Events
914  * @one_bit: indicates this is a non-endpoint event (not used)
915  * @device_event: indicates it's a device event. Should read as 0x00
916  * @type: indicates the type of device event.
917  *	0	- DisconnEvt
918  *	1	- USBRst
919  *	2	- ConnectDone
920  *	3	- ULStChng
921  *	4	- WkUpEvt
922  *	5	- Reserved
923  *	6	- EOPF
924  *	7	- SOF
925  *	8	- Reserved
926  *	9	- ErrticErr
927  *	10	- CmdCmplt
928  *	11	- EvntOverflow
929  *	12	- VndrDevTstRcved
930  * @reserved15_12: Reserved, not used
931  * @event_info: Information about this event
932  * @reserved31_25: Reserved, not used
933  */
934 struct dwc3_event_devt {
935 	u32	one_bit:1;
936 	u32	device_event:7;
937 	u32	type:4;
938 	u32	reserved15_12:4;
939 	u32	event_info:9;
940 	u32	reserved31_25:7;
941 } __packed;
942 
943 /**
944  * struct dwc3_event_gevt - Other Core Events
945  * @one_bit: indicates this is a non-endpoint event (not used)
946  * @device_event: indicates it's (0x03) Carkit or (0x04) I2C event.
947  * @phy_port_number: self-explanatory
948  * @reserved31_12: Reserved, not used.
949  */
950 struct dwc3_event_gevt {
951 	u32	one_bit:1;
952 	u32	device_event:7;
953 	u32	phy_port_number:4;
954 	u32	reserved31_12:20;
955 } __packed;
956 
957 /**
958  * union dwc3_event - representation of Event Buffer contents
959  * @raw: raw 32-bit event
960  * @type: the type of the event
961  * @depevt: Device Endpoint Event
962  * @devt: Device Event
963  * @gevt: Global Event
964  */
965 union dwc3_event {
966 	u32				raw;
967 	struct dwc3_event_type		type;
968 	struct dwc3_event_depevt	depevt;
969 	struct dwc3_event_devt		devt;
970 	struct dwc3_event_gevt		gevt;
971 };
972 
973 /**
974  * struct dwc3_gadget_ep_cmd_params - representation of endpoint command
975  * parameters
976  * @param2: third parameter
977  * @param1: second parameter
978  * @param0: first parameter
979  */
980 struct dwc3_gadget_ep_cmd_params {
981 	u32	param2;
982 	u32	param1;
983 	u32	param0;
984 };
985 
986 /*
987  * DWC3 Features to be used as Driver Data
988  */
989 
990 #define DWC3_HAS_PERIPHERAL		BIT(0)
991 #define DWC3_HAS_XHCI			BIT(1)
992 #define DWC3_HAS_OTG			BIT(3)
993 
994 /* prototypes */
995 void dwc3_set_mode(struct dwc3 *dwc, u32 mode);
996 int dwc3_gadget_resize_tx_fifos(struct dwc3 *dwc);
997 
998 #if IS_ENABLED(CONFIG_USB_DWC3_HOST) || IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE)
999 int dwc3_host_init(struct dwc3 *dwc);
1000 void dwc3_host_exit(struct dwc3 *dwc);
1001 #else
1002 static inline int dwc3_host_init(struct dwc3 *dwc)
1003 { return 0; }
1004 static inline void dwc3_host_exit(struct dwc3 *dwc)
1005 { }
1006 #endif
1007 
1008 #if IS_ENABLED(CONFIG_USB_DWC3_GADGET) || IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE)
1009 int dwc3_gadget_init(struct dwc3 *dwc);
1010 void dwc3_gadget_exit(struct dwc3 *dwc);
1011 int dwc3_gadget_set_test_mode(struct dwc3 *dwc, int mode);
1012 int dwc3_gadget_get_link_state(struct dwc3 *dwc);
1013 int dwc3_gadget_set_link_state(struct dwc3 *dwc, enum dwc3_link_state state);
1014 int dwc3_send_gadget_ep_cmd(struct dwc3 *dwc, unsigned ep,
1015 		unsigned cmd, struct dwc3_gadget_ep_cmd_params *params);
1016 int dwc3_send_gadget_generic_command(struct dwc3 *dwc, unsigned cmd, u32 param);
1017 #else
1018 static inline int dwc3_gadget_init(struct dwc3 *dwc)
1019 { return 0; }
1020 static inline void dwc3_gadget_exit(struct dwc3 *dwc)
1021 { }
1022 static inline int dwc3_gadget_set_test_mode(struct dwc3 *dwc, int mode)
1023 { return 0; }
1024 static inline int dwc3_gadget_get_link_state(struct dwc3 *dwc)
1025 { return 0; }
1026 static inline int dwc3_gadget_set_link_state(struct dwc3 *dwc,
1027 		enum dwc3_link_state state)
1028 { return 0; }
1029 
1030 static inline int dwc3_send_gadget_ep_cmd(struct dwc3 *dwc, unsigned ep,
1031 		unsigned cmd, struct dwc3_gadget_ep_cmd_params *params)
1032 { return 0; }
1033 static inline int dwc3_send_gadget_generic_command(struct dwc3 *dwc,
1034 		int cmd, u32 param)
1035 { return 0; }
1036 #endif
1037 
1038 /* power management interface */
1039 #if !IS_ENABLED(CONFIG_USB_DWC3_HOST)
1040 int dwc3_gadget_suspend(struct dwc3 *dwc);
1041 int dwc3_gadget_resume(struct dwc3 *dwc);
1042 #else
1043 static inline int dwc3_gadget_suspend(struct dwc3 *dwc)
1044 {
1045 	return 0;
1046 }
1047 
1048 static inline int dwc3_gadget_resume(struct dwc3 *dwc)
1049 {
1050 	return 0;
1051 }
1052 #endif /* !IS_ENABLED(CONFIG_USB_DWC3_HOST) */
1053 
1054 #if IS_ENABLED(CONFIG_USB_DWC3_ULPI)
1055 int dwc3_ulpi_init(struct dwc3 *dwc);
1056 void dwc3_ulpi_exit(struct dwc3 *dwc);
1057 #else
1058 static inline int dwc3_ulpi_init(struct dwc3 *dwc)
1059 { return 0; }
1060 static inline void dwc3_ulpi_exit(struct dwc3 *dwc)
1061 { }
1062 #endif
1063 
1064 #endif /* __DRIVERS_USB_DWC3_CORE_H */
1065