WebSVN - shark - Blame - Rev 1618 - /shark/branches/xen/drivers/usb/host/ehci-dbg.c

Rev	Author	Line No.	Line
846	giacomo	1	/*
		2	* Copyright (c) 2001-2002 by David Brownell
		3	*
		4	* This program is free software; you can redistribute it and/or modify it
		5	* under the terms of the GNU General Public License as published by the
		6	* Free Software Foundation; either version 2 of the License, or (at your
		7	* option) any later version.
		8	*
		9	* This program is distributed in the hope that it will be useful, but
		10	* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
		11	* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
		12	* for more details.
		13	*
		14	* You should have received a copy of the GNU General Public License
		15	* along with this program; if not, write to the Free Software Foundation,
		16	* Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
		17	*/
		18
		19	/* this file is part of ehci-hcd.c */
		20
		21	#define ehci_dbg(ehci, fmt, args...) \
		22	dev_dbg ((ehci)->hcd.controller , fmt , ## args )
		23	#define ehci_err(ehci, fmt, args...) \
		24	dev_err ((ehci)->hcd.controller , fmt , ## args )
		25	#define ehci_info(ehci, fmt, args...) \
		26	dev_info ((ehci)->hcd.controller , fmt , ## args )
		27	#define ehci_warn(ehci, fmt, args...) \
		28	dev_warn ((ehci)->hcd.controller , fmt , ## args )
		29
		30	#ifdef EHCI_VERBOSE_DEBUG
		31	# define vdbg dbg
		32	# define ehci_vdbg ehci_dbg
		33	#else
		34	# define vdbg(fmt,args...) do { } while (0)
		35	# define ehci_vdbg(ehci, fmt, args...) do { } while (0)
		36	#endif
		37
		38	#ifdef DEBUG
		39
		40	/* check the values in the HCSPARAMS register
		41	* (host controller _Structural_ parameters)
		42	* see EHCI spec, Table 2-4 for each value
		43	*/
		44	static void dbg_hcs_params (struct ehci_hcd ehci, char label)
		45	{
		46	u32 params = readl (&ehci->caps->hcs_params);
		47
		48	ehci_dbg (ehci,
		49	"%s hcs_params 0x%x dbg=%d%s cc=%d pcc=%d%s%s ports=%d\n",
		50	label, params,
		51	HCS_DEBUG_PORT (params),
		52	HCS_INDICATOR (params) ? " ind" : "",
		53	HCS_N_CC (params),
		54	HCS_N_PCC (params),
		55	HCS_PORTROUTED (params) ? "" : " ordered",
		56	HCS_PPC (params) ? "" : " !ppc",
		57	HCS_N_PORTS (params)
		58	);
		59	/* Port routing, per EHCI 0.95 Spec, Section 2.2.5 */
		60	if (HCS_PORTROUTED (params)) {
		61	int i;
		62	char buf [46], tmp [7], byte;
		63
		64	buf[0] = 0;
		65	for (i = 0; i < HCS_N_PORTS (params); i++) {
		66	byte = readb (&ehci->caps->portroute[(i>>1)]);
		67	sprintf26(tmp, "%d ",
		68	((i & 0x1) ? ((byte)&0xf) : ((byte>>4)&0xf)));
		69	strcat(buf, tmp);
		70	}
		71	ehci_dbg (ehci, "%s portroute %s\n",
		72	label, buf);
		73	}
		74	}
		75	#else
		76
		77	static inline void dbg_hcs_params (struct ehci_hcd ehci, char label) {}
		78
		79	#endif
		80
		81	#ifdef DEBUG
		82
		83	/* check the values in the HCCPARAMS register
		84	* (host controller _Capability_ parameters)
		85	* see EHCI Spec, Table 2-5 for each value
		86	* */
		87	static void dbg_hcc_params (struct ehci_hcd ehci, char label)
		88	{
		89	u32 params = readl (&ehci->caps->hcc_params);
		90
		91	if (HCC_ISOC_CACHE (params)) {
		92	ehci_dbg (ehci,
		93	"%s hcc_params %04x caching frame %s%s%s\n",
		94	label, params,
		95	HCC_PGM_FRAMELISTLEN (params) ? "256/512/1024" : "1024",
		96	HCC_CANPARK (params) ? " park" : "",
		97	HCC_64BIT_ADDR (params) ? " 64 bit addr" : "");
		98	} else {
		99	ehci_dbg (ehci,
		100	"%s hcc_params %04x thresh %d uframes %s%s%s\n",
		101	label,
		102	params,
		103	HCC_ISOC_THRES (params),
		104	HCC_PGM_FRAMELISTLEN (params) ? "256/512/1024" : "1024",
		105	HCC_CANPARK (params) ? " park" : "",
		106	HCC_64BIT_ADDR (params) ? " 64 bit addr" : "");
		107	}
		108	}
		109	#else
		110
		111	static inline void dbg_hcc_params (struct ehci_hcd ehci, char label) {}
		112
		113	#endif
		114
		115	#ifdef DEBUG
		116
		117	static void __attribute__((__unused__))
		118	dbg_qtd (char label, struct ehci_hcd ehci, struct ehci_qtd *qtd)
		119	{
		120	ehci_dbg (ehci, "%s td %p n%08x %08x t%08x p0=%08x\n", label, qtd,
		121	cpu_to_le32p (&qtd->hw_next),
		122	cpu_to_le32p (&qtd->hw_alt_next),
		123	cpu_to_le32p (&qtd->hw_token),
		124	cpu_to_le32p (&qtd->hw_buf [0]));
		125	if (qtd->hw_buf [1])
		126	ehci_dbg (ehci, " p1=%08x p2=%08x p3=%08x p4=%08x\n",
		127	cpu_to_le32p (&qtd->hw_buf [1]),
		128	cpu_to_le32p (&qtd->hw_buf [2]),
		129	cpu_to_le32p (&qtd->hw_buf [3]),
		130	cpu_to_le32p (&qtd->hw_buf [4]));
		131	}
		132
		133	static void __attribute__((__unused__))
		134	dbg_qh (char label, struct ehci_hcd ehci, struct ehci_qh *qh)
		135	{
		136	ehci_dbg (ehci, "%s qh %p n%08x info %x %x qtd %x\n", label,
		137	qh, qh->hw_next, qh->hw_info1, qh->hw_info2,
		138	qh->hw_current);
		139	dbg_qtd ("overlay", ehci, (struct ehci_qtd *) &qh->hw_qtd_next);
		140	}
		141
		142	static int __attribute__((__unused__))
		143	dbg_status_buf (char buf, unsigned len, char label, u32 status)
		144	{
		145	return snprintf26(buf, len,
		146	"%s%sstatus %04x%s%s%s%s%s%s%s%s%s%s",
		147	label, label [0] ? " " : "", status,
		148	(status & STS_ASS) ? " Async" : "",
		149	(status & STS_PSS) ? " Periodic" : "",
		150	(status & STS_RECL) ? " Recl" : "",
		151	(status & STS_HALT) ? " Halt" : "",
		152	(status & STS_IAA) ? " IAA" : "",
		153	(status & STS_FATAL) ? " FATAL" : "",
		154	(status & STS_FLR) ? " FLR" : "",
		155	(status & STS_PCD) ? " PCD" : "",
		156	(status & STS_ERR) ? " ERR" : "",
		157	(status & STS_INT) ? " INT" : ""
		158	);
		159	}
		160
		161	static int __attribute__((__unused__))
		162	dbg_intr_buf (char buf, unsigned len, char label, u32 enable)
		163	{
		164	return snprintf26(buf, len,
		165	"%s%sintrenable %02x%s%s%s%s%s%s",
		166	label, label [0] ? " " : "", enable,
		167	(enable & STS_IAA) ? " IAA" : "",
		168	(enable & STS_FATAL) ? " FATAL" : "",
		169	(enable & STS_FLR) ? " FLR" : "",
		170	(enable & STS_PCD) ? " PCD" : "",
		171	(enable & STS_ERR) ? " ERR" : "",
		172	(enable & STS_INT) ? " INT" : ""
		173	);
		174	}
		175
		176	static const char *const fls_strings [] =
		177	{ "1024", "512", "256", "??" };
		178
		179	static int dbg_command_buf (char buf, unsigned len, char label, u32 command)
		180	{
		181	return snprintf26(buf, len,
		182	"%s%scommand %06x %s=%d ithresh=%d%s%s%s%s period=%s%s %s",
		183	label, label [0] ? " " : "", command,
		184	(command & CMD_PARK) ? "park" : "(park)",
		185	CMD_PARK_CNT (command),
		186	(command >> 16) & 0x3f,
		187	(command & CMD_LRESET) ? " LReset" : "",
		188	(command & CMD_IAAD) ? " IAAD" : "",
		189	(command & CMD_ASE) ? " Async" : "",
		190	(command & CMD_PSE) ? " Periodic" : "",
		191	fls_strings [(command >> 2) & 0x3],
		192	(command & CMD_RESET) ? " Reset" : "",
		193	(command & CMD_RUN) ? "RUN" : "HALT"
		194	);
		195	}
		196
		197	static int
		198	dbg_port_buf (char buf, unsigned len, char label, int port, u32 status)
		199	{
		200	char *sig;
		201
		202	/* signaling state */
		203	switch (status & (3 << 10)) {
		204	case 0 << 10: sig = "se0"; break;
		205	case 1 << 10: sig = "k"; break; /* low speed */
		206	case 2 << 10: sig = "j"; break;
		207	default: sig = "?"; break;
		208	}
		209
		210	return snprintf26(buf, len,
		211	"%s%sport %d status %06x%s%s sig=%s %s%s%s%s%s%s%s%s%s",
		212	label, label [0] ? " " : "", port, status,
		213	(status & PORT_POWER) ? " POWER" : "",
		214	(status & PORT_OWNER) ? " OWNER" : "",
		215	sig,
		216	(status & PORT_RESET) ? " RESET" : "",
		217	(status & PORT_SUSPEND) ? " SUSPEND" : "",
		218	(status & PORT_RESUME) ? " RESUME" : "",
		219	(status & PORT_OCC) ? " OCC" : "",
		220	(status & PORT_OC) ? " OC" : "",
		221	(status & PORT_PEC) ? " PEC" : "",
		222	(status & PORT_PE) ? " PE" : "",
		223	(status & PORT_CSC) ? " CSC" : "",
		224	(status & PORT_CONNECT) ? " CONNECT" : ""
		225	);
		226	}
		227
		228	#else
		229	static inline void __attribute__((__unused__))
		230	dbg_qh (char label, struct ehci_hcd ehci, struct ehci_qh *qh)
		231	{}
		232
		233	static inline int __attribute__((__unused__))
		234	dbg_status_buf (char buf, unsigned len, char label, u32 status)
		235	{ return 0; }
		236
		237	static inline int __attribute__((__unused__))
		238	dbg_command_buf (char buf, unsigned len, char label, u32 command)
		239	{ return 0; }
		240
		241	static inline int __attribute__((__unused__))
		242	dbg_intr_buf (char buf, unsigned len, char label, u32 enable)
		243	{ return 0; }
		244
		245	static inline int __attribute__((__unused__))
		246	dbg_port_buf (char buf, unsigned len, char label, int port, u32 status)
		247	{ return 0; }
		248
		249	#endif /* DEBUG */
		250
		251	/* functions have the "wrong" filename when they're output... */
		252	#define dbg_status(ehci, label, status) { \
		253	char _buf [80]; \
		254	dbg_status_buf (_buf, sizeof _buf, label, status); \
		255	ehci_dbg (ehci, "%s\n", _buf); \
		256	}
		257
		258	#define dbg_cmd(ehci, label, command) { \
		259	char _buf [80]; \
		260	dbg_command_buf (_buf, sizeof _buf, label, command); \
		261	ehci_dbg (ehci, "%s\n", _buf); \
		262	}
		263
		264	#define dbg_port(ehci, label, port, status) { \
		265	char _buf [80]; \
		266	dbg_port_buf (_buf, sizeof _buf, label, port, status); \
		267	ehci_dbg (ehci, "%s\n", _buf); \
		268	}
		269
		270	/-------------------------------------------------------------------------/
		271
		272	#ifdef STUB_DEBUG_FILES
		273
		274	static inline void create_debug_files (struct ehci_hcd *bus) { }
		275	static inline void remove_debug_files (struct ehci_hcd *bus) { }
		276
		277	#else
		278
		279	/* troubleshooting help: expose state in driverfs */
		280
		281	#define speed_char(info1) ({ char tmp; \
		282	switch (info1 & (3 << 12)) { \
		283	case 0 << 12: tmp = 'f'; break; \
		284	case 1 << 12: tmp = 'l'; break; \
		285	case 2 << 12: tmp = 'h'; break; \
		286	default: tmp = '?'; break; \
		287	}; tmp; })
		288
		289	static inline char token_mark (u32 token)
		290	{
		291	token = le32_to_cpu (token);
		292	if (token & QTD_STS_ACTIVE)
		293	return '*';
		294	if (token & QTD_STS_HALT)
		295	return '-';
		296	if (!IS_SHORT_READ (token))
		297	return ' ';
		298	/* tries to advance through hw_alt_next */
		299	return '/';
		300	}
		301
		302	static void qh_lines (
		303	struct ehci_hcd *ehci,
		304	struct ehci_qh *qh,
		305	char **nextp,
		306	unsigned *sizep
		307	)
		308	{
		309	u32 scratch;
		310	u32 hw_curr;
		311	struct list_head *entry;
		312	struct ehci_qtd *td;
		313	unsigned temp;
		314	unsigned size = *sizep;
		315	char next = nextp;
		316	char mark;
		317
		318	if (qh->hw_qtd_next == EHCI_LIST_END) /* NEC does this */
		319	mark = '@';
		320	else
		321	mark = token_mark (qh->hw_token);
		322	if (mark == '/') { /* qh_alt_next controls qh advance? */
		323	if ((qh->hw_alt_next & QTD_MASK) == ehci->async->hw_alt_next)
		324	mark = '#'; /* blocked */
		325	else if (qh->hw_alt_next == EHCI_LIST_END)
		326	mark = '.'; /* use hw_qtd_next */
		327	/* else alt_next points to some other qtd */
		328	}
		329	scratch = cpu_to_le32p (&qh->hw_info1);
		330	hw_curr = (mark == '*') ? cpu_to_le32p (&qh->hw_current) : 0;
		331	temp = snprintf26(next, size,
		332	"qh/%p dev%d %cs ep%d %08x %08x (%08x%c %s nak%d)",
		333	qh, scratch & 0x007f,
		334	speed_char (scratch),
		335	(scratch >> 8) & 0x000f,
		336	scratch, cpu_to_le32p (&qh->hw_info2),
		337	cpu_to_le32p (&qh->hw_token), mark,
		338	(__constant_cpu_to_le32 (QTD_TOGGLE) & qh->hw_token)
		339	? "data0" : "data1",
		340	(cpu_to_le32p (&qh->hw_alt_next) >> 1) & 0x0f);
		341	size -= temp;
		342	next += temp;
		343
		344	/* hc may be modifying the list as we read it ... */
		345	list_for_each (entry, &qh->qtd_list) {
		346	td = list_entry (entry, struct ehci_qtd, qtd_list);
		347	scratch = cpu_to_le32p (&td->hw_token);
		348	mark = ' ';
		349	if (hw_curr == td->qtd_dma)
		350	mark = '*';
		351	else if (qh->hw_qtd_next == td->qtd_dma)
		352	mark = '+';
		353	else if (QTD_LENGTH (scratch)) {
		354	if (td->hw_alt_next == ehci->async->hw_alt_next)
		355	mark = '#';
		356	else if (td->hw_alt_next != EHCI_LIST_END)
		357	mark = '/';
		358	}
		359	temp = snprintf26(next, size,
		360	"\n\t%p%c%s len=%d %08x urb %p",
		361	td, mark, ({ char *tmp;
		362	switch ((scratch>>8)&0x03) {
		363	case 0: tmp = "out"; break;
		364	case 1: tmp = "in"; break;
		365	case 2: tmp = "setup"; break;
		366	default: tmp = "?"; break;
		367	} tmp;}),
		368	(scratch >> 16) & 0x7fff,
		369	scratch,
		370	td->urb);
		371	if (temp < 0)
		372	temp = 0;
		373	else if (size < temp)
		374	temp = size;
		375	size -= temp;
		376	next += temp;
		377	if (temp == size)
		378	goto done;
		379	}
		380
		381	temp = snprintf26(next, size, "\n");
		382	if (temp < 0)
		383	temp = 0;
		384	else if (size < temp)
		385	temp = size;
		386	size -= temp;
		387	next += temp;
		388
		389	done:
		390	*sizep = size;
		391	*nextp = next;
		392	}
		393
		394	static ssize_t
		395	show_async (struct class_device class_dev, char buf)
		396	{
		397	struct usb_bus *bus;
		398	struct usb_hcd *hcd;
		399	struct ehci_hcd *ehci;
		400	unsigned long flags;
		401	unsigned temp, size;
		402	char *next;
		403	struct ehci_qh *qh;
		404
		405	*buf = 0;
		406
		407	bus = to_usb_bus(class_dev);
		408	hcd = bus->hcpriv;
		409	ehci = hcd_to_ehci (hcd);
		410	next = buf;
		411	size = PAGE_SIZE;
		412
		413	/* dumps a snapshot of the async schedule.
		414	* usually empty except for long-term bulk reads, or head.
		415	* one QH per line, and TDs we know about
		416	*/
		417	spin_lock_irqsave (&ehci->lock, flags);
		418	for (qh = ehci->async->qh_next.qh; size > 0 && qh; qh = qh->qh_next.qh)
		419	qh_lines (ehci, qh, &next, &size);
		420	if (ehci->reclaim && size > 0) {
		421	temp = snprintf26(next, size, "\nreclaim =\n");
		422	size -= temp;
		423	next += temp;
		424
		425	for (qh = ehci->reclaim; size > 0 && qh; qh = qh->reclaim)
		426	qh_lines (ehci, qh, &next, &size);
		427	}
		428	spin_unlock_irqrestore (&ehci->lock, flags);
		429
		430	return strlen (buf);
		431	}
		432	static CLASS_DEVICE_ATTR (async, S_IRUGO, show_async, NULL);
		433
		434	#define DBG_SCHED_LIMIT 64
		435
		436	static ssize_t
		437	show_periodic (struct class_device class_dev, char buf)
		438	{
		439	struct usb_bus *bus;
		440	struct usb_hcd *hcd;
		441	struct ehci_hcd *ehci;
		442	unsigned long flags;
		443	union ehci_shadow p, *seen;
		444	unsigned temp, size, seen_count;
		445	char *next;
		446	unsigned i, tag;
		447
		448	if (!(seen = kmalloc (DBG_SCHED_LIMIT * sizeof *seen, SLAB_ATOMIC)))
		449	return 0;
		450	seen_count = 0;
		451
		452	bus = to_usb_bus(class_dev);
		453	hcd = bus->hcpriv;
		454	ehci = hcd_to_ehci (hcd);
		455	next = buf;
		456	size = PAGE_SIZE;
		457
		458	temp = snprintf26(next, size, "size = %d\n", ehci->periodic_size);
		459	size -= temp;
		460	next += temp;
		461
		462	/* dump a snapshot of the periodic schedule.
		463	* iso changes, interrupt usually doesn't.
		464	*/
		465	spin_lock_irqsave (&ehci->lock, flags);
		466	for (i = 0; i < ehci->periodic_size; i++) {
		467	p = ehci->pshadow [i];
		468	if (likely (!p.ptr))
		469	continue;
		470	tag = Q_NEXT_TYPE (ehci->periodic [i]);
		471
		472	temp = snprintf26(next, size, "%4d: ", i);
		473	size -= temp;
		474	next += temp;
		475
		476	do {
		477	switch (tag) {
		478	case Q_TYPE_QH:
		479	temp = snprintf26(next, size, " qh%d-%04x/%p",
		480	p.qh->period,
		481	le32_to_cpup (&p.qh->hw_info2)
		482	/* uframe masks */
		483	& 0xffff,
		484	p.qh);
		485	size -= temp;
		486	next += temp;
		487	/* don't repeat what follows this qh */
		488	for (temp = 0; temp < seen_count; temp++) {
		489	if (seen [temp].ptr != p.ptr)
		490	continue;
		491	if (p.qh->qh_next.ptr)
		492	temp = snprintf26(next, size,
		493	" ...");
		494	p.ptr = 0;
		495	break;
		496	}
		497	/* show more info the first time around */
		498	if (temp == seen_count && p.ptr) {
		499	u32 scratch = cpu_to_le32p (
		500	&p.qh->hw_info1);
		501	struct ehci_qtd *qtd;
		502	char *type = "";
		503
		504	/* count tds, get ep direction */
		505	temp = 0;
		506	list_for_each_entry (qtd,
		507	&p.qh->qtd_list,
		508	qtd_list) {
		509	temp++;
		510	switch (0x03 & (le32_to_cpu (
		511	qtd->hw_token) >> 8)) {
		512	case 0: type = "out"; continue;
		513	case 1: type = "in"; continue;
		514	}
		515	}
		516
		517	temp = snprintf26(next, size,
		518	" (%c%d ep%d%s "
		519	"[%d/%d] q%d p%d)",
		520	speed_char (scratch),
		521	scratch & 0x007f,
		522	(scratch >> 8) & 0x000f, type,
		523	p.qh->usecs, p.qh->c_usecs,
		524	temp,
		525	0x7ff & (scratch >> 16));
		526
		527	if (seen_count < DBG_SCHED_LIMIT)
		528	seen [seen_count++].qh = p.qh;
		529	} else
		530	temp = 0;
		531	if (p.qh) {
		532	tag = Q_NEXT_TYPE (p.qh->hw_next);
		533	p = p.qh->qh_next;
		534	}
		535	break;
		536	case Q_TYPE_FSTN:
		537	temp = snprintf26(next, size,
		538	" fstn-%8x/%p", p.fstn->hw_prev,
		539	p.fstn);
		540	tag = Q_NEXT_TYPE (p.fstn->hw_next);
		541	p = p.fstn->fstn_next;
		542	break;
		543	case Q_TYPE_ITD:
		544	temp = snprintf26(next, size,
		545	" itd/%p", p.itd);
		546	tag = Q_NEXT_TYPE (p.itd->hw_next);
		547	p = p.itd->itd_next;
		548	break;
		549	case Q_TYPE_SITD:
		550	temp = snprintf26(next, size,
		551	" sitd/%p", p.sitd);
		552	tag = Q_NEXT_TYPE (p.sitd->hw_next);
		553	p = p.sitd->sitd_next;
		554	break;
		555	}
		556	size -= temp;
		557	next += temp;
		558	} while (p.ptr);
		559
		560	temp = snprintf26(next, size, "\n");
		561	size -= temp;
		562	next += temp;
		563	}
		564	spin_unlock_irqrestore (&ehci->lock, flags);
		565	kfree (seen);
		566
		567	return PAGE_SIZE - size;
		568	}
		569	static CLASS_DEVICE_ATTR (periodic, S_IRUGO, show_periodic, NULL);
		570
		571	#undef DBG_SCHED_LIMIT
		572
		573	static ssize_t
		574	show_registers (struct class_device class_dev, char buf)
		575	{
		576	struct usb_bus *bus;
		577	struct usb_hcd *hcd;
		578	struct ehci_hcd *ehci;
		579	unsigned long flags;
		580	unsigned temp, size, i;
		581	char *next, scratch [80];
		582	static char fmt [] = "%*s\n";
		583	static char label [] = "";
		584
		585	bus = to_usb_bus(class_dev);
		586	hcd = bus->hcpriv;
		587	ehci = hcd_to_ehci (hcd);
		588	next = buf;
		589	size = PAGE_SIZE;
		590
		591	spin_lock_irqsave (&ehci->lock, flags);
		592
		593	/* Capability Registers */
		594	i = readw (&ehci->caps->hci_version);
		595	temp = snprintf26(next, size,
		596	"PCI device %s\nEHCI %x.%02x, hcd state %d (driver " DRIVER_VERSION ")\n",
		597	pci_name(hcd->pdev),
		598	i >> 8, i & 0x0ff, ehci->hcd.state);
		599	size -= temp;
		600	next += temp;
		601
		602	// FIXME interpret both types of params
		603	i = readl (&ehci->caps->hcs_params);
		604	temp = snprintf26(next, size, "structural params 0x%08x\n", i);
		605	size -= temp;
		606	next += temp;
		607
		608	i = readl (&ehci->caps->hcc_params);
		609	temp = snprintf26(next, size, "capability params 0x%08x\n", i);
		610	size -= temp;
		611	next += temp;
		612
		613	/* Operational Registers */
		614	temp = dbg_status_buf (scratch, sizeof scratch, label,
		615	readl (&ehci->regs->status));
		616	temp = snprintf26(next, size, fmt, temp, scratch);
		617	size -= temp;
		618	next += temp;
		619
		620	temp = dbg_command_buf (scratch, sizeof scratch, label,
		621	readl (&ehci->regs->command));
		622	temp = snprintf26(next, size, fmt, temp, scratch);
		623	size -= temp;
		624	next += temp;
		625
		626	temp = dbg_intr_buf (scratch, sizeof scratch, label,
		627	readl (&ehci->regs->intr_enable));
		628	temp = snprintf26(next, size, fmt, temp, scratch);
		629	size -= temp;
		630	next += temp;
		631
		632	temp = snprintf26(next, size, "uframe %04x\n",
		633	readl (&ehci->regs->frame_index));
		634	size -= temp;
		635	next += temp;
		636
		637	for (i = 0; i < HCS_N_PORTS (ehci->hcs_params); i++) {
		638	temp = dbg_port_buf (scratch, sizeof scratch, label, i,
		639	readl (&ehci->regs->port_status [i]));
		640	temp = snprintf26(next, size, fmt, temp, scratch);
		641	size -= temp;
		642	next += temp;
		643	}
		644
		645	if (ehci->reclaim) {
		646	temp = snprintf26(next, size, "reclaim qh %p%s\n",
		647	ehci->reclaim,
		648	ehci->reclaim_ready ? " ready" : "");
		649	size -= temp;
		650	next += temp;
		651	}
		652
		653	#ifdef EHCI_STATS
		654	temp = snprintf26(next, size,
		655	"irq normal %ld err %ld reclaim %ld (lost %ld)\n",
		656	ehci->stats.normal, ehci->stats.error, ehci->stats.reclaim,
		657	ehci->stats.lost_iaa);
		658	size -= temp;
		659	next += temp;
		660
		661	temp = snprintf26(next, size, "complete %ld unlink %ld\n",
		662	ehci->stats.complete, ehci->stats.unlink);
		663	size -= temp;
		664	next += temp;
		665	#endif
		666
		667	spin_unlock_irqrestore (&ehci->lock, flags);
		668
		669	return PAGE_SIZE - size;
		670	}
		671	static CLASS_DEVICE_ATTR (registers, S_IRUGO, show_registers, NULL);
		672
		673	static inline void create_debug_files (struct ehci_hcd *bus)
		674	{
		675	class_device_create_file(&bus->hcd.self.class_dev, &class_device_attr_async);
		676	class_device_create_file(&bus->hcd.self.class_dev, &class_device_attr_periodic);
		677	class_device_create_file(&bus->hcd.self.class_dev, &class_device_attr_registers);
		678	}
		679
		680	static inline void remove_debug_files (struct ehci_hcd *bus)
		681	{
		682	class_device_remove_file(&bus->hcd.self.class_dev, &class_device_attr_async);
		683	class_device_remove_file(&bus->hcd.self.class_dev, &class_device_attr_periodic);
		684	class_device_remove_file(&bus->hcd.self.class_dev, &class_device_attr_registers);
		685	}
		686
		687	#endif /* STUB_DEBUG_FILES */
		688

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(root)/shark/branches/xen/drivers/usb/host/ehci-dbg.c - Rev 1618