xref: /openbsd-src/sys/dev/usb/ehcireg.h (revision f2da64fbbbf1b03f09f390ab01267c93dfd77c4c)
1 /*	$OpenBSD: ehcireg.h,v 1.20 2015/04/10 13:56:42 mpi Exp $ */
2 /*	$NetBSD: ehcireg.h,v 1.17 2004/06/23 06:45:56 mycroft Exp $	*/
3 
4 /*
5  * Copyright (c) 2001, 2004 The NetBSD Foundation, Inc.
6  * All rights reserved.
7  *
8  * This code is derived from software contributed to The NetBSD Foundation
9  * by Lennart Augustsson (lennart@augustsson.net).
10  *
11  * Redistribution and use in source and binary forms, with or without
12  * modification, are permitted provided that the following conditions
13  * are met:
14  * 1. Redistributions of source code must retain the above copyright
15  *    notice, this list of conditions and the following disclaimer.
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  *
20  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30  * POSSIBILITY OF SUCH DAMAGE.
31  */
32 
33 #ifndef _DEV_PCI_EHCIREG_H_
34 #define _DEV_PCI_EHCIREG_H_
35 
36 /*** PCI config registers ***/
37 
38 #define PCI_CBMEM		0x10	/* configuration base MEM */
39 
40 #define PCI_INTERFACE_EHCI	0x20
41 
42 #define PCI_USBREV		0x60	/* RO USB protocol revision */
43 #define  PCI_USBREV_MASK	0xff
44 #define  PCI_USBREV_PRE_1_0	0x00
45 #define  PCI_USBREV_1_0		0x10
46 #define  PCI_USBREV_1_1		0x11
47 #define  PCI_USBREV_2_0		0x20
48 
49 #define PCI_EHCI_FLADJ		0x61	/*RW Frame len adj, SOF=59488+6*fladj */
50 
51 #define PCI_EHCI_PORTWAKECAP	0x62	/* RW Port wake caps (opt)  */
52 
53 /* EHCI Extended Capabilities */
54 #define EHCI_EC_LEGSUP		0x01
55 
56 #define EHCI_EECP_NEXT(x)	(((x) >> 8) & 0xff)
57 #define EHCI_EECP_ID(x)		((x) & 0xff)
58 
59 #define EHCI_LEGSUP_LEGSUP	0x00
60 #define  EHCI_LEGSUP_OSOWNED	0x01000000 /* OS owned semaphore */
61 #define  EHCI_LEGSUP_BIOSOWNED	0x00010000 /* BIOS owned semaphore */
62 #define PCI_LEGSUP_USBLEGCTLSTS	0x04
63 
64 /*** EHCI capability registers ***/
65 
66 #define EHCI_CAPLENGTH		0x00	/*RO Capability register length field */
67 /* reserved			0x01 */
68 #define EHCI_HCIVERSION		0x02	/* RO Interface version number */
69 
70 #define EHCI_HCSPARAMS		0x04	/* RO Structural parameters */
71 #define  EHCI_HCS_DEBUGPORT(x)	(((x) >> 20) & 0xf)
72 #define  EHCI_HCS_P_INDICATOR(x) ((x) & 0x10000)
73 #define  EHCI_HCS_N_CC(x)	(((x) >> 12) & 0xf) /* # of companion ctlrs */
74 #define  EHCI_HCS_N_PCC(x)	(((x) >> 8) & 0xf) /* # of ports per comp. */
75 #define  EHCI_HCS_PRR(x)	((x) & 0x80) /* port routing rules */
76 #define  EHCI_HCS_PPC(x)	((x) & 0x10) /* port power control */
77 #define  EHCI_HCS_N_PORTS(x)	((x) & 0xf) /* # of ports */
78 
79 #define EHCI_HCCPARAMS		0x08	/* RO Capability parameters */
80 #define  EHCI_HCC_EECP(x)	(((x) >> 8) & 0xff) /* extended ports caps */
81 #define  EHCI_HCC_IST(x)	(((x) >> 4) & 0xf) /* isoc sched threshold */
82 #define  EHCI_HCC_ASPC(x)	((x) & 0x4) /* async sched park cap */
83 #define  EHCI_HCC_PFLF(x)	((x) & 0x2) /* prog frame list flag */
84 #define  EHCI_HCC_64BIT(x)	((x) & 0x1) /* 64 bit address cap */
85 
86 #define EHCI_HCSP_PORTROUTE	0x0c	/*RO Companion port route description */
87 
88 /* EHCI operational registers.  Offset given by EHCI_CAPLENGTH register */
89 #define EHCI_USBCMD		0x00	/* RO, RW, WO Command register */
90 #define  EHCI_CMD_ITC_M		0x00ff0000 /* RW interrupt threshold ctrl */
91 #define   EHCI_CMD_ITC_1	0x00010000
92 #define   EHCI_CMD_ITC_2	0x00020000
93 #define   EHCI_CMD_ITC_4	0x00040000
94 #define   EHCI_CMD_ITC_8	0x00080000
95 #define   EHCI_CMD_ITC_16	0x00100000
96 #define   EHCI_CMD_ITC_32	0x00200000
97 #define   EHCI_CMD_ITC_64	0x00400000
98 #define  EHCI_CMD_ASPME		0x00000800 /* RW/RO async park enable */
99 #define  EHCI_CMD_ASPMC		0x00000300 /* RW/RO async park count */
100 #define  EHCI_CMD_LHCR		0x00000080 /* RW light host ctrl reset */
101 #define  EHCI_CMD_IAAD		0x00000040 /* RW intr on async adv door bell */
102 #define  EHCI_CMD_ASE		0x00000020 /* RW async sched enable */
103 #define  EHCI_CMD_PSE		0x00000010 /* RW periodic sched enable */
104 #define  EHCI_CMD_FLS_M		0x0000000c /* RW/RO frame list size */
105 #define  EHCI_CMD_FLS(x)	(((x) >> 2) & 3) /* RW/RO frame list size */
106 #define  EHCI_CMD_HCRESET	0x00000002 /* RW reset */
107 #define  EHCI_CMD_RS		0x00000001 /* RW run/stop */
108 
109 #define EHCI_USBSTS		0x04	/* RO, RW, RWC Status register */
110 #define  EHCI_STS_ASS		0x00008000 /* RO async sched status */
111 #define  EHCI_STS_PSS		0x00004000 /* RO periodic sched status */
112 #define  EHCI_STS_REC		0x00002000 /* RO reclamation */
113 #define  EHCI_STS_HCH		0x00001000 /* RO host controller halted */
114 #define  EHCI_STS_IAA		0x00000020 /* RWC interrupt on async adv */
115 #define  EHCI_STS_HSE		0x00000010 /* RWC host system error */
116 #define  EHCI_STS_FLR		0x00000008 /* RWC frame list rollover */
117 #define  EHCI_STS_PCD		0x00000004 /* RWC port change detect */
118 #define  EHCI_STS_ERRINT	0x00000002 /* RWC error interrupt */
119 #define  EHCI_STS_INT		0x00000001 /* RWC interrupt */
120 #define  EHCI_STS_INTRS(x)	((x) & 0x3f)
121 
122 #define EHCI_NORMAL_INTRS (EHCI_STS_IAA | EHCI_STS_HSE | EHCI_STS_PCD | EHCI_STS_ERRINT | EHCI_STS_INT)
123 
124 #define EHCI_USBINTR		0x08	/* RW Interrupt register */
125 #define EHCI_INTR_IAAE		0x00000020 /* interrupt on async advance ena */
126 #define EHCI_INTR_HSEE		0x00000010 /* host system error ena */
127 #define EHCI_INTR_FLRE		0x00000008 /* frame list rollover ena */
128 #define EHCI_INTR_PCIE		0x00000004 /* port change ena */
129 #define EHCI_INTR_UEIE		0x00000002 /* USB error intr ena */
130 #define EHCI_INTR_UIE		0x00000001 /* USB intr ena */
131 
132 #define EHCI_FRINDEX		0x0c	/* RW Frame Index register */
133 
134 #define EHCI_CTRLDSSEGMENT	0x10	/* RW Control Data Structure Segment */
135 
136 #define EHCI_PERIODICLISTBASE	0x14	/* RW Periodic List Base */
137 #define EHCI_ASYNCLISTADDR	0x18	/* RW Async List Base */
138 
139 #define EHCI_CONFIGFLAG		0x40	/* RW Configure Flag register */
140 #define  EHCI_CONF_CF		0x00000001 /* RW configure flag */
141 
142 #define EHCI_PORTSC(n)		(0x40+4*(n)) /* RO, RW, RWC Port Status reg */
143 #define  EHCI_PS_WKOC_E		0x00400000 /* RW wake on over current ena */
144 #define  EHCI_PS_WKDSCNNT_E	0x00200000 /* RW wake on disconnect ena */
145 #define  EHCI_PS_WKCNNT_E	0x00100000 /* RW wake on connect ena */
146 #define  EHCI_PS_PTC		0x000f0000 /* RW port test control */
147 #define  EHCI_PS_PIC		0x0000c000 /* RW port indicator control */
148 #define  EHCI_PS_PO		0x00002000 /* RW port owner */
149 #define  EHCI_PS_PP		0x00001000 /* RW,RO port power */
150 #define  EHCI_PS_LS		0x00000c00 /* RO line status */
151 #define  EHCI_PS_IS_LOWSPEED(x)	(((x) & EHCI_PS_LS) == 0x00000400)
152 #define  EHCI_PS_PR		0x00000100 /* RW port reset */
153 #define  EHCI_PS_SUSP		0x00000080 /* RW suspend */
154 #define  EHCI_PS_FPR		0x00000040 /* RW force port resume */
155 #define  EHCI_PS_OCC		0x00000020 /* RWC over current change */
156 #define  EHCI_PS_OCA		0x00000010 /* RO over current active */
157 #define  EHCI_PS_PEC		0x00000008 /* RWC port enable change */
158 #define  EHCI_PS_PE		0x00000004 /* RW port enable */
159 #define  EHCI_PS_CSC		0x00000002 /* RWC connect status change */
160 #define  EHCI_PS_CS		0x00000001 /* RO connect status */
161 #define  EHCI_PS_CLEAR		(EHCI_PS_OCC|EHCI_PS_PEC|EHCI_PS_CSC)
162 
163 #define EHCI_PORT_RESET_COMPLETE 2 /* ms */
164 
165 #define EHCI_FLALIGN_ALIGN	0x1000
166 
167 /* No data structure may cross a page boundary. */
168 #define EHCI_PAGE_SIZE		0x1000
169 #define EHCI_PAGE(x)		((x) &~ 0xfff)
170 #define EHCI_PAGE_OFFSET(x)	((x) & 0xfff)
171 
172 typedef u_int32_t ehci_link_t;
173 #define EHCI_LINK_TERMINATE	0x00000001
174 #define EHCI_LINK_TYPE(x)	((x) & 0x00000006)
175 #define  EHCI_LINK_ITD		0x0
176 #define  EHCI_LINK_QH		0x2
177 #define  EHCI_LINK_SITD		0x4
178 #define  EHCI_LINK_FSTN		0x6
179 #define EHCI_LINK_ADDR(x)	((x) &~ 0x1f)
180 
181 typedef u_int32_t ehci_physaddr_t;
182 typedef u_int32_t ehci_isoc_trans_t;
183 typedef u_int32_t ehci_isoc_bufr_ptr_t;
184 #define	EHCI_BUFPTR_MASK	0xfffff000
185 
186 /* Isochronous Transfer Descriptor */
187 #define EHCI_ITD_NTRANS		8
188 #define EHCI_ITD_NBUFFERS	7
189 struct ehci_itd {
190 	volatile ehci_link_t            itd_next;
191 	volatile ehci_isoc_trans_t      itd_ctl[8];
192 #define EHCI_ITD_GET_STATUS(x)	(((x) >> 28) & 0xf)
193 #define EHCI_ITD_SET_STATUS(x)	(((x) & 0xf) << 28)
194 #define EHCI_ITD_ACTIVE		0x80000000
195 #define EHCI_ITD_BUF_ERR	0x40000000
196 #define EHCI_ITD_BABBLE		0x20000000
197 #define EHCI_ITD_ERROR		0x10000000
198 #define EHCI_ITD_GET_LEN(x)	(((x) >> 16) & 0xfff)
199 #define EHCI_ITD_SET_LEN(x)	(((x) & 0xfff) << 16)
200 #define EHCI_ITD_IOC		0x8000
201 #define EHCI_ITD_GET_IOC(x)	(((x) >> 15) & 1)
202 #define EHCI_ITD_SET_IOC(x)	(((x) << 15) & EHCI_ITD_IOC)
203 #define EHCI_ITD_GET_PG(x)	(((x) >> 12) & 0x7)
204 #define EHCI_ITD_SET_PG(x)	(((x) & 0x7) << 12)
205 #define EHCI_ITD_GET_OFFS(x)	(((x) >> 0) & 0xfff)
206 #define EHCI_ITD_SET_OFFS(x)	(((x) & 0xfff) << 0)
207 	volatile ehci_isoc_bufr_ptr_t   itd_bufr[7];
208 #define EHCI_ITD_GET_ENDPT(x)	(((x) >> 8) & 0xf)
209 #define EHCI_ITD_SET_ENDPT(x)	(((x) & 0xf) << 8)
210 #define EHCI_ITD_GET_DADDR(x)	((x) & 0x7f)
211 #define EHCI_ITD_SET_DADDR(x)	((x) & 0x7f)
212 #define EHCI_ITD_GET_DIR(x)	(((x) >> 11) & 1)
213 #define EHCI_ITD_SET_DIR(x)	(((x) & 1) << 11)
214 #define EHCI_ITD_GET_MAXPKT(x)	((x) & 0x7ff)
215 #define EHCI_ITD_SET_MAXPKT(x)	((x) & 0x7ff)
216 #define EHCI_ITD_GET_MULTI(x)	((x) & 0x3)
217 #define EHCI_ITD_SET_MULTI(x)	((x) & 0x3)
218 	volatile ehci_isoc_bufr_ptr_t	itd_bufr_hi[7];
219 };
220 #define EHCI_ITD_ALIGN		32
221 
222 /* Split Transaction Isochronous Transfer Descriptor */
223 struct ehci_sitd {
224 	volatile ehci_link_t		sitd_next;
225 	volatile u_int32_t		sitd_endp;
226 #define EHCI_SITD_GET_ADDR(x)	(((x) >>  0) & 0x7f) /* endpoint addr */
227 #define EHCI_SITD_SET_ADDR(x)	(x)
228 #define EHCI_SITD_GET_ENDPT(x)	(((x) >>  8) & 0xf) /* endpoint no */
229 #define EHCI_SITD_SET_ENDPT(x)	((x) <<  8)
230 #define EHCI_SITD_GET_HUBA(x)	(((x) >> 16) & 0x7f) /* hub address */
231 #define EHCI_SITD_SET_HUBA(x)	((x) << 16)
232 #define EHCI_SITD_GET_PORT(x)	(((x) >> 23) & 0x7f) /* hub port */
233 #define EHCI_SITD_SET_PORT(x)	((x) << 23)
234 #define EHCI_SITD_GET_DIR(x)	(((x) >> 31) & 0x1) /* direction */
235 #define EHCI_SITD_SET_DIR(x)	((x) << 31)
236 	volatile u_int32_t		sitd_sched;
237 #define EHCI_SITD_GET_SMASK(x)	(((x) >>  0) & 0xff) /* intr sched mask */
238 #define EHCI_SITD_SET_SMASK(x)	((x) <<  0)
239 #define EHCI_SITD_GET_CMASK(x)	(((x) >>  8) & 0xff) /* split completion mask */
240 #define EHCI_SITD_SET_CMASK(x)	((x) <<  8)
241 	volatile u_int32_t		sitd_trans;
242 #define  EHCI_SITD_IOC		0x80000000
243 #define  EHCI_SITD_ACTIVE	0x80
244 #define  EHCI_SITD_ERR		0x40
245 #define  EHCI_SITD_BUFERR	0x20
246 #define  EHCI_SITD_BABBLE	0x10
247 #define  EHCI_SITD_XACTERR	0x08
248 #define  EHCI_SITD_MISSEDMICRO	0x04
249 #define  EHCI_SITD_SPLITXSTATE	0x02
250 #define EHCI_SITD_GET_LEN(x)	(((x) >> 16) & 0x3ff) /* bytes to transfer */
251 #define EHCI_SITD_SET_LEN(x)	(((x) & 0x3ff) << 16)
252 #define EHCI_SITD_GET_PG(x)	(((x) >> 30) & 0x1) /* buffer page */
253 #define EHCI_SITD_SET_PG(x)	((x) << 30)
254 	volatile ehci_physaddr_t	sitd_bufr[2];
255 #define EHCI_SITD_GET_TCOUNT(x)	(((x) >>  0) & 0x7) /* transaction count */
256 #define EHCI_SITD_SET_TCOUNT(x)	((x) << 0)
257 #define EHCI_SITD_GET_TP(x)	(((x) >>  3) & 0x3) /* transaction position */
258 #define EHCI_SITD_SET_TP(x)	((x) <<  3)
259 #define  EHCI_SITD_TP_ALL	0x0
260 #define  EHCI_SITD_TP_BEGIN	0x1
261 #define  EHCI_SITD_TP_MIDDLE	0x2
262 #define  EHCI_SITD_TP_END	0x3
263 	volatile ehci_link_t		sitd_back;
264 	volatile ehci_physaddr_t	sitd_bufr_hi[2]; /* 64bit */
265 };
266 #define EHCI_SITD_ALIGN		32
267 
268 /* Queue Element Transfer Descriptor */
269 #define EHCI_QTD_NBUFFERS	5
270 struct ehci_qtd {
271 	ehci_link_t	qtd_next;
272 	ehci_link_t	qtd_altnext;
273 	u_int32_t	qtd_status;
274 #define EHCI_QTD_GET_STATUS(x)	(((x) >>  0) & 0xff)
275 #define EHCI_QTD_SET_STATUS(x)	((x) << 0)
276 #define  EHCI_QTD_ACTIVE	0x80
277 #define  EHCI_QTD_HALTED	0x40
278 #define  EHCI_QTD_BUFERR	0x20
279 #define  EHCI_QTD_BABBLE	0x10
280 #define  EHCI_QTD_XACTERR	0x08
281 #define  EHCI_QTD_MISSEDMICRO	0x04
282 #define  EHCI_QTD_SPLITXSTATE	0x02
283 #define  EHCI_QTD_PINGSTATE	0x01
284 #define  EHCI_QTD_STATERRS	0x7c
285 #define EHCI_QTD_GET_PID(x)	(((x) >>  8) & 0x3)
286 #define EHCI_QTD_SET_PID(x)	((x) <<  8)
287 #define  EHCI_QTD_PID_OUT	0x0
288 #define  EHCI_QTD_PID_IN	0x1
289 #define  EHCI_QTD_PID_SETUP	0x2
290 #define EHCI_QTD_GET_CERR(x)	(((x) >> 10) &  0x3)
291 #define EHCI_QTD_SET_CERR(x)	((x) << 10)
292 #define EHCI_QTD_GET_C_PAGE(x)	(((x) >> 12) &  0x7)
293 #define EHCI_QTD_SET_C_PAGE(x)	((x) << 12)
294 #define EHCI_QTD_GET_IOC(x)	(((x) >> 15) &  0x1)
295 #define EHCI_QTD_IOC		0x00008000
296 #define EHCI_QTD_GET_BYTES(x)	(((x) >> 16) &  0x7fff)
297 #define EHCI_QTD_SET_BYTES(x)	((x) << 16)
298 #define EHCI_QTD_GET_TOGGLE(x)	(((x) >> 31) &  0x1)
299 #define EHCI_QTD_SET_TOGGLE(x)	((x) << 31)
300 #define EHCI_QTD_TOGGLE_MASK	0x80000000
301 	ehci_physaddr_t	qtd_buffer[EHCI_QTD_NBUFFERS];
302 	ehci_physaddr_t qtd_buffer_hi[EHCI_QTD_NBUFFERS];
303 };
304 #define EHCI_QTD_ALIGN		32
305 
306 /* Queue Head */
307 struct ehci_qh {
308 	ehci_link_t	qh_link;
309 	u_int32_t	qh_endp;
310 #define EHCI_QH_GET_ADDR(x)	(((x) >>  0) & 0x7f) /* endpoint addr */
311 #define EHCI_QH_SET_ADDR(x)	(x)
312 #define EHCI_QH_ADDRMASK	0x0000007f
313 #define EHCI_QH_GET_INACT(x)	(((x) >>  7) & 0x01) /* inactivate on next */
314 #define EHCI_QH_INACT		0x00000080
315 #define EHCI_QH_GET_ENDPT(x)	(((x) >>  8) & 0x0f) /* endpoint no */
316 #define EHCI_QH_SET_ENDPT(x)	((x) <<  8)
317 #define EHCI_QH_GET_EPS(x)	(((x) >> 12) & 0x03) /* endpoint speed */
318 #define EHCI_QH_SET_EPS(x)	((x) << 12)
319 #define  EHCI_QH_SPEED_FULL	0x0
320 #define  EHCI_QH_SPEED_LOW	0x1
321 #define  EHCI_QH_SPEED_HIGH	0x2
322 #define EHCI_QH_GET_DTC(x)	(((x) >> 14) & 0x01) /* data toggle control */
323 #define EHCI_QH_DTC		0x00004000
324 #define EHCI_QH_GET_HRECL(x)	(((x) >> 15) & 0x01) /* head of reclamation */
325 #define EHCI_QH_HRECL		0x00008000
326 #define EHCI_QH_GET_MPL(x)	(((x) >> 16) & 0x7ff) /* max packet len */
327 #define EHCI_QH_SET_MPL(x)	((x) << 16)
328 #define EHCI_QH_MPLMASK		0x07ff0000
329 #define EHCI_QH_GET_CTL(x)	(((x) >> 27) & 0x01) /* control endpoint */
330 #define EHCI_QH_CTL		0x08000000
331 #define EHCI_QH_GET_NRL(x)	(((x) >> 28) & 0x0f) /* NAK reload */
332 #define EHCI_QH_SET_NRL(x)	((x) << 28)
333 	u_int32_t	qh_endphub;
334 #define EHCI_QH_GET_SMASK(x)	(((x) >>  0) & 0xff) /* intr sched mask */
335 #define EHCI_QH_SET_SMASK(x)	((x) <<  0)
336 #define EHCI_QH_GET_CMASK(x)	(((x) >>  8) & 0xff) /* split completion mask */
337 #define EHCI_QH_SET_CMASK(x)	((x) <<  8)
338 #define EHCI_QH_GET_HUBA(x)	(((x) >> 16) & 0x7f) /* hub address */
339 #define EHCI_QH_SET_HUBA(x)	((x) << 16)
340 #define EHCI_QH_GET_PORT(x)	(((x) >> 23) & 0x7f) /* hub port */
341 #define EHCI_QH_SET_PORT(x)	((x) << 23)
342 #define EHCI_QH_GET_MULT(x)	(((x) >> 30) & 0x03) /* pipe multiplier */
343 #define EHCI_QH_SET_MULT(x)	((x) << 30)
344 	ehci_link_t	qh_curqtd;
345 	struct ehci_qtd	qh_qtd;
346 };
347 #define EHCI_QH_ALIGN		32
348 
349 /* Periodic Frame Span Traversal Node */
350 struct ehci_fstn {
351 	ehci_link_t	fstn_link;
352 	ehci_link_t	fstn_back;
353 };
354 #define EHCI_FSTN_ALIGN		32
355 
356 #endif /* _DEV_PCI_EHCIREG_H_ */
357