xref: /illumos-gate/usr/src/uts/common/sys/usb/hcd/uhci/uhci.h (revision 0f1b305ee9e700c825d9e9ad1ea1e4311d212eb2)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 /*
22  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
23  * Use is subject to license terms.
24  */
25 
26 #ifndef _SYS_USB_UHCI_H
27 #define	_SYS_USB_UHCI_H
28 
29 
30 #include <sys/types.h>
31 
32 #ifdef __cplusplus
33 extern "C" {
34 #endif
35 
36 /*
37  * Universal Host Controller Driver (UHCI)
38  *
39  * The UHCI driver is a driver which interfaces to the Universal
40  * Serial Bus Driver (USBA) and the Host Controller (HC). The interface to
41  * the Host Controller is defined by the Universal Host Controller
42  * Interface spec.
43  */
44 
45 
46 #define	LEGACYMODE_REG_OFFSET		0xc0
47 #define	LEGACYMODE_REG_INIT_VALUE	0xaf00
48 
49 /*
50  *   The register set of the UCHI controller
51  *   This structure is laid out for proper alignment so no need to pack(1).
52  */
53 typedef volatile struct hcr_regs {
54 	uint16_t	USBCMD;
55 	uint16_t	USBSTS;
56 	uint16_t	USBINTR;
57 	uint16_t	FRNUM;
58 	uint32_t	FRBASEADD;
59 	uchar_t		SOFMOD;
60 	uchar_t		rsvd[3];
61 	uint16_t	PORTSC[2];
62 } hc_regs_t;
63 
64 /*
65  * #defines for the USB Command Register
66  */
67 #define	USBCMD_REG_MAXPKT_64		0x0080
68 #define	USBCMD_REG_CONFIG_FLAG		0x0040
69 #define	USBCMD_REG_SW_DEBUG		0x0020
70 #define	USBCMD_REG_FGBL_RESUME		0x0010
71 #define	USBCMD_REG_ENTER_GBL_SUSPEND	0x0008
72 #define	USBCMD_REG_GBL_RESET		0x0004
73 #define	USBCMD_REG_HC_RESET		0x0002
74 #define	USBCMD_REG_HC_RUN		0x0001
75 
76 
77 /*
78  * #defines for the USB Status Register
79  */
80 #define	USBSTS_REG_HC_HALTED		0x0020
81 #define	USBSTS_REG_HC_PROCESS_ERR	0x0010
82 #define	USBSTS_REG_HOST_SYS_ERR 	0x0008
83 #define	USBSTS_REG_RESUME_DETECT	0x0004
84 #define	USBSTS_REG_USB_ERR_INTR		0x0002
85 #define	USBSTS_REG_USB_INTR		0x0001
86 
87 /*
88  * #defines for the USB Root Hub Port Register
89  */
90 #define	HCR_PORT_CCS			0x1
91 #define	HCR_PORT_CSC			0x2
92 #define	HCR_PORT_ENABLE			0x4
93 #define	HCR_PORT_ENDIS_CHG		0x8
94 #define	HCR_PORT_LINE_STATSU		0x30
95 #define	HCR_PORT_RESUME_DETECT		0x40
96 #define	HCR_PORT_LSDA			0x100
97 #define	HCR_PORT_RESET			0x200
98 #define	HCR_PORT_SUSPEND		0x1000
99 
100 /*
101  * #defines for USB Interrupt Enable Register
102  */
103 #define	USBINTR_REG_SPINT_EN		0x0008
104 #define	USBINTR_REG_IOC_EN		0x0004
105 #define	USBINTR_REG_RESUME_INT_EN	0x0002
106 #define	USBINTR_REG_TOCRC_INT_EN	0x0001
107 
108 #define	ENABLE_ALL_INTRS		0x000F
109 #define	DISABLE_ALL_INTRS		0x0000
110 #define	UHCI_INTR_MASK			0x1f
111 
112 
113 #define	SetReg32(hndl, addr, val)	ddi_put32((hndl), \
114 						&(addr), (val))
115 #define	GetReg32(hndl, addr)		ddi_get32((hndl), &(addr))
116 
117 #define	SetQH32(ucp, addr, val)		\
118 		SetReg32((ucp)->uhci_qh_pool_mem_handle, (addr), (val))
119 #define	GetQH32(ucp, addr)		\
120 		GetReg32((ucp)->uhci_qh_pool_mem_handle, (addr))
121 
122 #define	SetTD32(ucp, addr, val)		\
123 		SetReg32((ucp)->uhci_td_pool_mem_handle, (addr), (val))
124 #define	GetTD32(ucp, addr)		\
125 		GetReg32((ucp)->uhci_td_pool_mem_handle, (addr))
126 
127 #define	SetFL32(ucp, addr, val)		\
128 		SetReg32((ucp)->uhci_flt_mem_handle, (addr), (val))
129 #define	GetFL32(ucp, addr)		\
130 		GetReg32((ucp)->uhci_flt_mem_handle, (addr))
131 
132 
133 /*
134  * UHCI Queue Head structure, aligned on 16 byte boundary
135  */
136 typedef struct uhci_qh {
137 	/* Hardware controlled bits */
138 	uint32_t		link_ptr;	/* Next Queue Head / TD */
139 	uint32_t		element_ptr;	/* Next queue head / TD	*/
140 
141 	/* Software controlled bits */
142 	uint16_t	node;		/* Node	that its attached */
143 	uint16_t	qh_flag;	/* See	below */
144 
145 	struct	uhci_qh	*prev_qh;	/* Pointer to Prev queue head */
146 	struct	uhci_td	*td_tailp;	/* Pointer to the last TD of QH	*/
147 	struct	uhci_bulk_isoc_xfer_info *bulk_xfer_info;
148 	uint64_t	__pad1;		/* align to 16 bytes */
149 } queue_head_t;
150 
151 #define	NUM_STATIC_NODES		63
152 #define	NUM_INTR_QH_LISTS		64
153 #define	NUM_FRAME_LST_ENTRIES		1024
154 #define	TREE_HEIGHT			5
155 #define	VIRTUAL_TREE_HEIGHT		5
156 #define	SIZE_OF_FRAME_LST_TABLE		1024 * 4
157 
158 #define	HC_TD_HEAD			0x0
159 #define	HC_QUEUE_HEAD			0x2
160 #define	HC_DEPTH_FIRST			0x4
161 #define	HC_END_OF_LIST			0x1
162 
163 #define	QUEUE_HEAD_FLAG_STATIC		0x1
164 #define	QUEUE_HEAD_FLAG_FREE		0x2
165 #define	QUEUE_HEAD_FLAG_BUSY		0x3
166 
167 #define	QH_LINK_PTR_MASK		0xFFFFFFF0
168 #define	QH_ELEMENT_PTR_MASK		0xFFFFFFF0
169 #define	FRAME_LST_PTR_MASK		0xFFFFFFF0
170 
171 
172 #define	GetField(u, td, f, o, l) \
173 	((GetTD32(u, (td)->f) >> (o)) & ((1U<<l)-1))
174 
175 #define	SetField(u, td, f, o, l, v) \
176 	SetTD32(u, (td)->f, \
177 	(GetTD32(u, (td)->f) & ~(((1U<<l)-1) << o)) | \
178 	(((v) & ((1U<<l)-1)) << o))
179 
180 #define	GetTD_alen(u, td)	GetField((u), (td), dw2, 0, 11)
181 #define	GetTD_status(u, td)	GetField((u), (td), dw2, 16, 8)
182 #define	GetTD_ioc(u, td)	GetField((u), (td), dw2, 24, 1)
183 #define	GetTD_iso(u, td)	GetField((u), (td), dw2, 25, 1)
184 #define	GetTD_ls(u, td)		GetField((u), (td), dw2, 26, 1)
185 #define	GetTD_c_err(u, td)	GetField((u), (td), dw2, 27, 2)
186 #define	GetTD_spd(u, td)	GetField((u), (td), dw2, 29, 1)
187 #define	GetTD_PID(u, td)	GetField((u), (td), dw3, 0, 8)
188 #define	GetTD_devaddr(u, td)	GetField((u), (td), dw3, 8, 7)
189 #define	GetTD_endpt(u, td)	GetField((u), (td), dw3, 15, 4)
190 #define	GetTD_dtogg(u, td)	GetField((u), (td), dw3, 19, 1)
191 #define	GetTD_mlen(u, td)	GetField((u), (td), dw3, 21, 11)
192 
193 #define	SetTD_alen(u, td, v)	SetField((u), (td), dw2, 0, 11, (v))
194 #define	SetTD_status(u, td, v)	SetField((u), (td), dw2, 16, 8, (v))
195 #define	SetTD_ioc(u, td, v)	SetField((u), (td), dw2, 24, 1, (v))
196 #define	SetTD_iso(u, td, v)	SetField((u), (td), dw2, 25, 1, (v))
197 #define	SetTD_ls(u, td, v)	SetField((u), (td), dw2, 26, 1, (v))
198 #define	SetTD_c_err(u, td, v)	SetField((u), (td), dw2, 27, 2, (v))
199 #define	SetTD_spd(u, td, v)	SetField((u), (td), dw2, 29, 1, (v))
200 #define	SetTD_PID(u, td, v)	SetField((u), (td), dw3, 0, 8, (v))
201 #define	SetTD_devaddr(u, td, v)	SetField((u), (td), dw3, 8, 7, (v))
202 #define	SetTD_endpt(u, td, v)	SetField((u), (td), dw3, 15, 4, (v))
203 #define	SetTD_dtogg(u, td, v)	SetField((u), (td), dw3, 19, 1, (v))
204 #define	SetTD_mlen(u, td, v)	SetField((u), (td), dw3, 21, 11, (v))
205 
206 /*
207  * UHCI Transfer Descriptor structure, aligned on 16 byte boundary
208  */
209 typedef struct uhci_td {
210 
211 	/* Information required by HC for executing the request */
212 					/* Pointer to the next TD/QH */
213 	uint32_t			link_ptr;
214 	uint32_t			dw2;
215 	uint32_t			dw3;
216 					/* Data buffer address */
217 	uint32_t			buffer_address;
218 
219 	/* Information required by HCD for managing the request */
220 	struct	uhci_td			*qh_td_prev;
221 	struct	uhci_td			*tw_td_next;
222 	struct	uhci_td			*outst_td_next;
223 	struct	uhci_td			*outst_td_prev;
224 	struct	uhci_trans_wrapper	*tw;
225 	struct	uhci_td			*isoc_next;
226 	struct	uhci_td			*isoc_prev;
227 	ushort_t			isoc_pkt_index;
228 	ushort_t			flag;
229 	uint_t				starting_frame;
230 	uint_t				_pad[3];	/* 16 byte alignment */
231 } uhci_td_t;
232 
233 #define	TD_FLAG_FREE			0x1
234 #define	TD_FLAG_BUSY			0x2
235 #define	TD_FLAG_DUMMY			0x3
236 
237 #define	INTERRUPT_ON_COMPLETION		0x1
238 #define	END_POINT_ADDRESS_MASK		0xF
239 #define	UHCI_MAX_ERR_COUNT		3
240 #define	MAX_NUM_BULK_TDS_PER_XFER	128
241 
242 /* section 3.2.2 of UHCI1.1 spec, bits 23:16 of status field */
243 #define	UHCI_TD_ACTIVE			0x80
244 #define	UHCI_TD_STALLED			0x40
245 #define	UHCI_TD_DATA_BUFFER_ERR		0x20
246 #define	UHCI_TD_BABBLE_ERR		0x10
247 #define	UHCI_TD_NAK_RECEIVED		0x08
248 #define	UHCI_TD_CRC_TIMEOUT		0x04
249 #define	UHCI_TD_BITSTUFF_ERR		0x02
250 
251 #define	TD_INACTIVE			0x7F
252 #define	TD_STATUS_MASK			0x76
253 #define	ZERO_LENGTH			0x7FF
254 
255 #define	PID_SETUP			0x2D
256 #define	PID_IN				0x69
257 #define	PID_OUT				0xe1
258 
259 #define	SETUP_SIZE			8
260 
261 #define	SETUP				0x11
262 #define	DATA				0x12
263 #define	STATUS				0x13
264 
265 #define	UHCI_INVALID_PTR		NULL
266 #define	LOW_SPEED_DEVICE		1
267 
268 /*
269  * These provide synchronization between TD deletions.
270  */
271 #define	UHCI_NOT_CLAIMED		0x0
272 #define	UHCI_INTR_HDLR_CLAIMED		0x1
273 #define	UHCI_MODIFY_TD_BITS_CLAIMED	0x2
274 #define	UHCI_TIMEOUT_HDLR_CLAIMED	0x3
275 
276 
277 /*
278  * Structure for Bulk and Isoc TD pools
279  */
280 typedef struct uhci_bulk_isoc_td_pool {
281 	caddr_t				pool_addr;
282 	ddi_dma_cookie_t		cookie;	    /* DMA cookie */
283 	ddi_dma_handle_t		dma_handle; /* DMA handle */
284 	ddi_acc_handle_t		mem_handle; /* Memory handle */
285 	ushort_t			num_tds;
286 } uhci_bulk_isoc_td_pool_t;
287 
288 /*
289  *  Structure for Bulk and Isoc transfers
290  */
291 typedef struct uhci_bulk_isoc_xfer_info {
292 	uhci_bulk_isoc_td_pool_t	*td_pools;
293 	ushort_t			num_pools;
294 	ushort_t			num_tds;
295 } uhci_bulk_isoc_xfer_t;
296 
297 /*
298  * Structure for Isoc DMA buffer
299  *	One Isoc transfer includes multiple Isoc packets.
300  *	One DMA buffer is allocated for one packet each.
301  */
302 typedef struct uhci_isoc_buf {
303 	caddr_t			buf_addr;	/* Starting buffer address */
304 	ddi_dma_cookie_t	cookie;		/* DMA cookie */
305 	ddi_dma_handle_t	dma_handle;	/* DMA handle */
306 	ddi_acc_handle_t	mem_handle;	/* Memory handle */
307 	size_t			length;		/* Buffer length */
308 	ushort_t		index;
309 } uhci_isoc_buf_t;
310 
311 /*
312  * Macros related to ISOC transfers
313  */
314 #define	UHCI_SIZE_OF_HW_FRNUM		11
315 #define	UHCI_BIT_10_MASK		0x400
316 #define	UHCI_MAX_ISOC_FRAMES		1024
317 #define	UHCI_MAX_ISOC_PKTS		256
318 #define	UHCI_DEFAULT_ISOC_RCV_PKTS	1	/* isoc pkts per req */
319 
320 #define	FRNUM_MASK			0x3FF
321 #define	SW_FRNUM_MASK			0xFFFFFFFFFFFFF800
322 #define	INVALID_FRNUM			0
323 #define	FRNUM_OFFSET			5
324 #define	MAX_FRAME_NUM			1023
325 
326 typedef	uint32_t frame_lst_table_t;
327 
328 /*
329  * Bandwidth allocation
330  *	The following definitions are  used during  bandwidth
331  *	calculations for a given endpoint maximum packet size.
332  */
333 #define	MAX_BUS_BANDWIDTH	1500	/* Up to 1500 bytes per frame */
334 #define	MAX_POLL_INTERVAL	255	/* Maximum polling interval */
335 #define	MIN_POLL_INTERVAL	1	/* Minimum polling interval */
336 #define	SOF			6	/* Length in bytes of SOF */
337 #define	EOF			2	/* Length in bytes of EOF */
338 
339 /*
340  * Minimum polling interval for low speed endpoint
341  *
342  * According USB Specifications, a full-speed endpoint can specify
343  * a desired polling interval 1ms to 255ms and a low speed endpoints
344  * are limited to specifying only 10ms to 255ms. But some old keyboards
345  * and mice uses polling interval of 8ms. For compatibility purpose,
346  * we are using polling interval between 8ms and 255ms for low speed
347  * endpoints.
348  */
349 #define	MIN_LOW_SPEED_POLL_INTERVAL	8
350 
351 /*
352  * For non-periodic transfers, reserve at least for one low-speed device
353  * transaction and according to USB Bandwidth Analysis white paper,  it
354  * comes around 12% of USB frame time. Then periodic transfers will get
355  * 88% of USB frame time.
356  */
357 #define	MAX_PERIODIC_BANDWIDTH	(((MAX_BUS_BANDWIDTH - SOF - EOF)*88)/100)
358 
359 /*
360  * The following are the protocol overheads in terms of Bytes for the
361  * different transfer types.  All these protocol overhead  values are
362  * derived from the 5.9.3 section of USB Specification	and  with the
363  * help of Bandwidth Analysis white paper which is posted on the  USB
364  * developer forum.
365  */
366 #define	FS_NON_ISOC_PROTO_OVERHEAD	14
367 #define	FS_ISOC_INPUT_PROTO_OVERHEAD	11
368 #define	FS_ISOC_OUTPUT_PROTO_OVERHEAD	10
369 #define	LOW_SPEED_PROTO_OVERHEAD	97
370 #define	HUB_LOW_SPEED_PROTO_OVERHEAD	01
371 
372 /*
373  * The Host Controller (HC) delays are the USB host controller specific
374  * delays. The value shown below is the host  controller delay for  the
375  * Sand core USB host controller.
376  */
377 #define	HOST_CONTROLLER_DELAY		18
378 
379 /*
380  * The low speed clock below represents that to transmit one low-speed
381  * bit takes eight times more than one full speed bit time.
382  */
383 #define	LOW_SPEED_CLOCK			8
384 
385 /* the 16 byte alignment is required for every TD and QH start addr */
386 #define	UHCI_QH_ALIGN_SZ		16
387 #define	UHCI_TD_ALIGN_SZ		16
388 
389 #ifdef __cplusplus
390 }
391 #endif
392 
393 #endif /* _SYS_USB_UHCI_H */
394