Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/usb/host/ehci-dbg.c b/drivers/usb/host/ehci-dbg.c
new file mode 100644
index 0000000..495e2a3
--- /dev/null
+++ b/drivers/usb/host/ehci-dbg.c
@@ -0,0 +1,755 @@
+/*
+ * Copyright (c) 2001-2002 by David Brownell
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/* this file is part of ehci-hcd.c */
+
+#define ehci_dbg(ehci, fmt, args...) \
+ dev_dbg (ehci_to_hcd(ehci)->self.controller , fmt , ## args )
+#define ehci_err(ehci, fmt, args...) \
+ dev_err (ehci_to_hcd(ehci)->self.controller , fmt , ## args )
+#define ehci_info(ehci, fmt, args...) \
+ dev_info (ehci_to_hcd(ehci)->self.controller , fmt , ## args )
+#define ehci_warn(ehci, fmt, args...) \
+ dev_warn (ehci_to_hcd(ehci)->self.controller , fmt , ## args )
+
+#ifdef EHCI_VERBOSE_DEBUG
+# define vdbg dbg
+# define ehci_vdbg ehci_dbg
+#else
+# define vdbg(fmt,args...) do { } while (0)
+# define ehci_vdbg(ehci, fmt, args...) do { } while (0)
+#endif
+
+#ifdef DEBUG
+
+/* check the values in the HCSPARAMS register
+ * (host controller _Structural_ parameters)
+ * see EHCI spec, Table 2-4 for each value
+ */
+static void dbg_hcs_params (struct ehci_hcd *ehci, char *label)
+{
+ u32 params = readl (&ehci->caps->hcs_params);
+
+ ehci_dbg (ehci,
+ "%s hcs_params 0x%x dbg=%d%s cc=%d pcc=%d%s%s ports=%d\n",
+ label, params,
+ HCS_DEBUG_PORT (params),
+ HCS_INDICATOR (params) ? " ind" : "",
+ HCS_N_CC (params),
+ HCS_N_PCC (params),
+ HCS_PORTROUTED (params) ? "" : " ordered",
+ HCS_PPC (params) ? "" : " !ppc",
+ HCS_N_PORTS (params)
+ );
+ /* Port routing, per EHCI 0.95 Spec, Section 2.2.5 */
+ if (HCS_PORTROUTED (params)) {
+ int i;
+ char buf [46], tmp [7], byte;
+
+ buf[0] = 0;
+ for (i = 0; i < HCS_N_PORTS (params); i++) {
+ // FIXME MIPS won't readb() ...
+ byte = readb (&ehci->caps->portroute[(i>>1)]);
+ sprintf(tmp, "%d ",
+ ((i & 0x1) ? ((byte)&0xf) : ((byte>>4)&0xf)));
+ strcat(buf, tmp);
+ }
+ ehci_dbg (ehci, "%s portroute %s\n",
+ label, buf);
+ }
+}
+#else
+
+static inline void dbg_hcs_params (struct ehci_hcd *ehci, char *label) {}
+
+#endif
+
+#ifdef DEBUG
+
+/* check the values in the HCCPARAMS register
+ * (host controller _Capability_ parameters)
+ * see EHCI Spec, Table 2-5 for each value
+ * */
+static void dbg_hcc_params (struct ehci_hcd *ehci, char *label)
+{
+ u32 params = readl (&ehci->caps->hcc_params);
+
+ if (HCC_ISOC_CACHE (params)) {
+ ehci_dbg (ehci,
+ "%s hcc_params %04x caching frame %s%s%s\n",
+ label, params,
+ HCC_PGM_FRAMELISTLEN (params) ? "256/512/1024" : "1024",
+ HCC_CANPARK (params) ? " park" : "",
+ HCC_64BIT_ADDR (params) ? " 64 bit addr" : "");
+ } else {
+ ehci_dbg (ehci,
+ "%s hcc_params %04x thresh %d uframes %s%s%s\n",
+ label,
+ params,
+ HCC_ISOC_THRES (params),
+ HCC_PGM_FRAMELISTLEN (params) ? "256/512/1024" : "1024",
+ HCC_CANPARK (params) ? " park" : "",
+ HCC_64BIT_ADDR (params) ? " 64 bit addr" : "");
+ }
+}
+#else
+
+static inline void dbg_hcc_params (struct ehci_hcd *ehci, char *label) {}
+
+#endif
+
+#ifdef DEBUG
+
+static void __attribute__((__unused__))
+dbg_qtd (const char *label, struct ehci_hcd *ehci, struct ehci_qtd *qtd)
+{
+ ehci_dbg (ehci, "%s td %p n%08x %08x t%08x p0=%08x\n", label, qtd,
+ le32_to_cpup (&qtd->hw_next),
+ le32_to_cpup (&qtd->hw_alt_next),
+ le32_to_cpup (&qtd->hw_token),
+ le32_to_cpup (&qtd->hw_buf [0]));
+ if (qtd->hw_buf [1])
+ ehci_dbg (ehci, " p1=%08x p2=%08x p3=%08x p4=%08x\n",
+ le32_to_cpup (&qtd->hw_buf [1]),
+ le32_to_cpup (&qtd->hw_buf [2]),
+ le32_to_cpup (&qtd->hw_buf [3]),
+ le32_to_cpup (&qtd->hw_buf [4]));
+}
+
+static void __attribute__((__unused__))
+dbg_qh (const char *label, struct ehci_hcd *ehci, struct ehci_qh *qh)
+{
+ ehci_dbg (ehci, "%s qh %p n%08x info %x %x qtd %x\n", label,
+ qh, qh->hw_next, qh->hw_info1, qh->hw_info2,
+ qh->hw_current);
+ dbg_qtd ("overlay", ehci, (struct ehci_qtd *) &qh->hw_qtd_next);
+}
+
+static void __attribute__((__unused__))
+dbg_itd (const char *label, struct ehci_hcd *ehci, struct ehci_itd *itd)
+{
+ ehci_dbg (ehci, "%s [%d] itd %p, next %08x, urb %p\n",
+ label, itd->frame, itd, le32_to_cpu(itd->hw_next), itd->urb);
+ ehci_dbg (ehci,
+ " trans: %08x %08x %08x %08x %08x %08x %08x %08x\n",
+ le32_to_cpu(itd->hw_transaction[0]),
+ le32_to_cpu(itd->hw_transaction[1]),
+ le32_to_cpu(itd->hw_transaction[2]),
+ le32_to_cpu(itd->hw_transaction[3]),
+ le32_to_cpu(itd->hw_transaction[4]),
+ le32_to_cpu(itd->hw_transaction[5]),
+ le32_to_cpu(itd->hw_transaction[6]),
+ le32_to_cpu(itd->hw_transaction[7]));
+ ehci_dbg (ehci,
+ " buf: %08x %08x %08x %08x %08x %08x %08x\n",
+ le32_to_cpu(itd->hw_bufp[0]),
+ le32_to_cpu(itd->hw_bufp[1]),
+ le32_to_cpu(itd->hw_bufp[2]),
+ le32_to_cpu(itd->hw_bufp[3]),
+ le32_to_cpu(itd->hw_bufp[4]),
+ le32_to_cpu(itd->hw_bufp[5]),
+ le32_to_cpu(itd->hw_bufp[6]));
+ ehci_dbg (ehci, " index: %d %d %d %d %d %d %d %d\n",
+ itd->index[0], itd->index[1], itd->index[2],
+ itd->index[3], itd->index[4], itd->index[5],
+ itd->index[6], itd->index[7]);
+}
+
+static void __attribute__((__unused__))
+dbg_sitd (const char *label, struct ehci_hcd *ehci, struct ehci_sitd *sitd)
+{
+ ehci_dbg (ehci, "%s [%d] sitd %p, next %08x, urb %p\n",
+ label, sitd->frame, sitd, le32_to_cpu(sitd->hw_next), sitd->urb);
+ ehci_dbg (ehci,
+ " addr %08x sched %04x result %08x buf %08x %08x\n",
+ le32_to_cpu(sitd->hw_fullspeed_ep),
+ le32_to_cpu(sitd->hw_uframe),
+ le32_to_cpu(sitd->hw_results),
+ le32_to_cpu(sitd->hw_buf [0]),
+ le32_to_cpu(sitd->hw_buf [1]));
+}
+
+static int __attribute__((__unused__))
+dbg_status_buf (char *buf, unsigned len, const char *label, u32 status)
+{
+ return scnprintf (buf, len,
+ "%s%sstatus %04x%s%s%s%s%s%s%s%s%s%s",
+ label, label [0] ? " " : "", status,
+ (status & STS_ASS) ? " Async" : "",
+ (status & STS_PSS) ? " Periodic" : "",
+ (status & STS_RECL) ? " Recl" : "",
+ (status & STS_HALT) ? " Halt" : "",
+ (status & STS_IAA) ? " IAA" : "",
+ (status & STS_FATAL) ? " FATAL" : "",
+ (status & STS_FLR) ? " FLR" : "",
+ (status & STS_PCD) ? " PCD" : "",
+ (status & STS_ERR) ? " ERR" : "",
+ (status & STS_INT) ? " INT" : ""
+ );
+}
+
+static int __attribute__((__unused__))
+dbg_intr_buf (char *buf, unsigned len, const char *label, u32 enable)
+{
+ return scnprintf (buf, len,
+ "%s%sintrenable %02x%s%s%s%s%s%s",
+ label, label [0] ? " " : "", enable,
+ (enable & STS_IAA) ? " IAA" : "",
+ (enable & STS_FATAL) ? " FATAL" : "",
+ (enable & STS_FLR) ? " FLR" : "",
+ (enable & STS_PCD) ? " PCD" : "",
+ (enable & STS_ERR) ? " ERR" : "",
+ (enable & STS_INT) ? " INT" : ""
+ );
+}
+
+static const char *const fls_strings [] =
+ { "1024", "512", "256", "??" };
+
+static int
+dbg_command_buf (char *buf, unsigned len, const char *label, u32 command)
+{
+ return scnprintf (buf, len,
+ "%s%scommand %06x %s=%d ithresh=%d%s%s%s%s period=%s%s %s",
+ label, label [0] ? " " : "", command,
+ (command & CMD_PARK) ? "park" : "(park)",
+ CMD_PARK_CNT (command),
+ (command >> 16) & 0x3f,
+ (command & CMD_LRESET) ? " LReset" : "",
+ (command & CMD_IAAD) ? " IAAD" : "",
+ (command & CMD_ASE) ? " Async" : "",
+ (command & CMD_PSE) ? " Periodic" : "",
+ fls_strings [(command >> 2) & 0x3],
+ (command & CMD_RESET) ? " Reset" : "",
+ (command & CMD_RUN) ? "RUN" : "HALT"
+ );
+}
+
+static int
+dbg_port_buf (char *buf, unsigned len, const char *label, int port, u32 status)
+{
+ char *sig;
+
+ /* signaling state */
+ switch (status & (3 << 10)) {
+ case 0 << 10: sig = "se0"; break;
+ case 1 << 10: sig = "k"; break; /* low speed */
+ case 2 << 10: sig = "j"; break;
+ default: sig = "?"; break;
+ }
+
+ return scnprintf (buf, len,
+ "%s%sport %d status %06x%s%s sig=%s %s%s%s%s%s%s%s%s%s",
+ label, label [0] ? " " : "", port, status,
+ (status & PORT_POWER) ? " POWER" : "",
+ (status & PORT_OWNER) ? " OWNER" : "",
+ sig,
+ (status & PORT_RESET) ? " RESET" : "",
+ (status & PORT_SUSPEND) ? " SUSPEND" : "",
+ (status & PORT_RESUME) ? " RESUME" : "",
+ (status & PORT_OCC) ? " OCC" : "",
+ (status & PORT_OC) ? " OC" : "",
+ (status & PORT_PEC) ? " PEC" : "",
+ (status & PORT_PE) ? " PE" : "",
+ (status & PORT_CSC) ? " CSC" : "",
+ (status & PORT_CONNECT) ? " CONNECT" : ""
+ );
+}
+
+#else
+static inline void __attribute__((__unused__))
+dbg_qh (char *label, struct ehci_hcd *ehci, struct ehci_qh *qh)
+{}
+
+static inline int __attribute__((__unused__))
+dbg_status_buf (char *buf, unsigned len, const char *label, u32 status)
+{ return 0; }
+
+static inline int __attribute__((__unused__))
+dbg_command_buf (char *buf, unsigned len, const char *label, u32 command)
+{ return 0; }
+
+static inline int __attribute__((__unused__))
+dbg_intr_buf (char *buf, unsigned len, const char *label, u32 enable)
+{ return 0; }
+
+static inline int __attribute__((__unused__))
+dbg_port_buf (char *buf, unsigned len, const char *label, int port, u32 status)
+{ return 0; }
+
+#endif /* DEBUG */
+
+/* functions have the "wrong" filename when they're output... */
+#define dbg_status(ehci, label, status) { \
+ char _buf [80]; \
+ dbg_status_buf (_buf, sizeof _buf, label, status); \
+ ehci_dbg (ehci, "%s\n", _buf); \
+}
+
+#define dbg_cmd(ehci, label, command) { \
+ char _buf [80]; \
+ dbg_command_buf (_buf, sizeof _buf, label, command); \
+ ehci_dbg (ehci, "%s\n", _buf); \
+}
+
+#define dbg_port(ehci, label, port, status) { \
+ char _buf [80]; \
+ dbg_port_buf (_buf, sizeof _buf, label, port, status); \
+ ehci_dbg (ehci, "%s\n", _buf); \
+}
+
+/*-------------------------------------------------------------------------*/
+
+#ifdef STUB_DEBUG_FILES
+
+static inline void create_debug_files (struct ehci_hcd *bus) { }
+static inline void remove_debug_files (struct ehci_hcd *bus) { }
+
+#else
+
+/* troubleshooting help: expose state in driverfs */
+
+#define speed_char(info1) ({ char tmp; \
+ switch (info1 & (3 << 12)) { \
+ case 0 << 12: tmp = 'f'; break; \
+ case 1 << 12: tmp = 'l'; break; \
+ case 2 << 12: tmp = 'h'; break; \
+ default: tmp = '?'; break; \
+ }; tmp; })
+
+static inline char token_mark (__le32 token)
+{
+ __u32 v = le32_to_cpu (token);
+ if (v & QTD_STS_ACTIVE)
+ return '*';
+ if (v & QTD_STS_HALT)
+ return '-';
+ if (!IS_SHORT_READ (v))
+ return ' ';
+ /* tries to advance through hw_alt_next */
+ return '/';
+}
+
+static void qh_lines (
+ struct ehci_hcd *ehci,
+ struct ehci_qh *qh,
+ char **nextp,
+ unsigned *sizep
+)
+{
+ u32 scratch;
+ u32 hw_curr;
+ struct list_head *entry;
+ struct ehci_qtd *td;
+ unsigned temp;
+ unsigned size = *sizep;
+ char *next = *nextp;
+ char mark;
+
+ if (qh->hw_qtd_next == EHCI_LIST_END) /* NEC does this */
+ mark = '@';
+ else
+ mark = token_mark (qh->hw_token);
+ if (mark == '/') { /* qh_alt_next controls qh advance? */
+ if ((qh->hw_alt_next & QTD_MASK) == ehci->async->hw_alt_next)
+ mark = '#'; /* blocked */
+ else if (qh->hw_alt_next == EHCI_LIST_END)
+ mark = '.'; /* use hw_qtd_next */
+ /* else alt_next points to some other qtd */
+ }
+ scratch = le32_to_cpup (&qh->hw_info1);
+ hw_curr = (mark == '*') ? le32_to_cpup (&qh->hw_current) : 0;
+ temp = scnprintf (next, size,
+ "qh/%p dev%d %cs ep%d %08x %08x (%08x%c %s nak%d)",
+ qh, scratch & 0x007f,
+ speed_char (scratch),
+ (scratch >> 8) & 0x000f,
+ scratch, le32_to_cpup (&qh->hw_info2),
+ le32_to_cpup (&qh->hw_token), mark,
+ (__constant_cpu_to_le32 (QTD_TOGGLE) & qh->hw_token)
+ ? "data1" : "data0",
+ (le32_to_cpup (&qh->hw_alt_next) >> 1) & 0x0f);
+ size -= temp;
+ next += temp;
+
+ /* hc may be modifying the list as we read it ... */
+ list_for_each (entry, &qh->qtd_list) {
+ td = list_entry (entry, struct ehci_qtd, qtd_list);
+ scratch = le32_to_cpup (&td->hw_token);
+ mark = ' ';
+ if (hw_curr == td->qtd_dma)
+ mark = '*';
+ else if (qh->hw_qtd_next == td->qtd_dma)
+ mark = '+';
+ else if (QTD_LENGTH (scratch)) {
+ if (td->hw_alt_next == ehci->async->hw_alt_next)
+ mark = '#';
+ else if (td->hw_alt_next != EHCI_LIST_END)
+ mark = '/';
+ }
+ temp = snprintf (next, size,
+ "\n\t%p%c%s len=%d %08x urb %p",
+ td, mark, ({ char *tmp;
+ switch ((scratch>>8)&0x03) {
+ case 0: tmp = "out"; break;
+ case 1: tmp = "in"; break;
+ case 2: tmp = "setup"; break;
+ default: tmp = "?"; break;
+ } tmp;}),
+ (scratch >> 16) & 0x7fff,
+ scratch,
+ td->urb);
+ if (temp < 0)
+ temp = 0;
+ else if (size < temp)
+ temp = size;
+ size -= temp;
+ next += temp;
+ if (temp == size)
+ goto done;
+ }
+
+ temp = snprintf (next, size, "\n");
+ if (temp < 0)
+ temp = 0;
+ else if (size < temp)
+ temp = size;
+ size -= temp;
+ next += temp;
+
+done:
+ *sizep = size;
+ *nextp = next;
+}
+
+static ssize_t
+show_async (struct class_device *class_dev, char *buf)
+{
+ struct usb_bus *bus;
+ struct usb_hcd *hcd;
+ struct ehci_hcd *ehci;
+ unsigned long flags;
+ unsigned temp, size;
+ char *next;
+ struct ehci_qh *qh;
+
+ *buf = 0;
+
+ bus = to_usb_bus(class_dev);
+ hcd = bus->hcpriv;
+ ehci = hcd_to_ehci (hcd);
+ next = buf;
+ size = PAGE_SIZE;
+
+ /* dumps a snapshot of the async schedule.
+ * usually empty except for long-term bulk reads, or head.
+ * one QH per line, and TDs we know about
+ */
+ spin_lock_irqsave (&ehci->lock, flags);
+ for (qh = ehci->async->qh_next.qh; size > 0 && qh; qh = qh->qh_next.qh)
+ qh_lines (ehci, qh, &next, &size);
+ if (ehci->reclaim && size > 0) {
+ temp = scnprintf (next, size, "\nreclaim =\n");
+ size -= temp;
+ next += temp;
+
+ for (qh = ehci->reclaim; size > 0 && qh; qh = qh->reclaim)
+ qh_lines (ehci, qh, &next, &size);
+ }
+ spin_unlock_irqrestore (&ehci->lock, flags);
+
+ return strlen (buf);
+}
+static CLASS_DEVICE_ATTR (async, S_IRUGO, show_async, NULL);
+
+#define DBG_SCHED_LIMIT 64
+
+static ssize_t
+show_periodic (struct class_device *class_dev, char *buf)
+{
+ struct usb_bus *bus;
+ struct usb_hcd *hcd;
+ struct ehci_hcd *ehci;
+ unsigned long flags;
+ union ehci_shadow p, *seen;
+ unsigned temp, size, seen_count;
+ char *next;
+ unsigned i;
+ __le32 tag;
+
+ if (!(seen = kmalloc (DBG_SCHED_LIMIT * sizeof *seen, SLAB_ATOMIC)))
+ return 0;
+ seen_count = 0;
+
+ bus = to_usb_bus(class_dev);
+ hcd = bus->hcpriv;
+ ehci = hcd_to_ehci (hcd);
+ next = buf;
+ size = PAGE_SIZE;
+
+ temp = scnprintf (next, size, "size = %d\n", ehci->periodic_size);
+ size -= temp;
+ next += temp;
+
+ /* dump a snapshot of the periodic schedule.
+ * iso changes, interrupt usually doesn't.
+ */
+ spin_lock_irqsave (&ehci->lock, flags);
+ for (i = 0; i < ehci->periodic_size; i++) {
+ p = ehci->pshadow [i];
+ if (likely (!p.ptr))
+ continue;
+ tag = Q_NEXT_TYPE (ehci->periodic [i]);
+
+ temp = scnprintf (next, size, "%4d: ", i);
+ size -= temp;
+ next += temp;
+
+ do {
+ switch (tag) {
+ case Q_TYPE_QH:
+ temp = scnprintf (next, size, " qh%d-%04x/%p",
+ p.qh->period,
+ le32_to_cpup (&p.qh->hw_info2)
+ /* uframe masks */
+ & 0xffff,
+ p.qh);
+ size -= temp;
+ next += temp;
+ /* don't repeat what follows this qh */
+ for (temp = 0; temp < seen_count; temp++) {
+ if (seen [temp].ptr != p.ptr)
+ continue;
+ if (p.qh->qh_next.ptr)
+ temp = scnprintf (next, size,
+ " ...");
+ p.ptr = NULL;
+ break;
+ }
+ /* show more info the first time around */
+ if (temp == seen_count && p.ptr) {
+ u32 scratch = le32_to_cpup (
+ &p.qh->hw_info1);
+ struct ehci_qtd *qtd;
+ char *type = "";
+
+ /* count tds, get ep direction */
+ temp = 0;
+ list_for_each_entry (qtd,
+ &p.qh->qtd_list,
+ qtd_list) {
+ temp++;
+ switch (0x03 & (le32_to_cpu (
+ qtd->hw_token) >> 8)) {
+ case 0: type = "out"; continue;
+ case 1: type = "in"; continue;
+ }
+ }
+
+ temp = scnprintf (next, size,
+ " (%c%d ep%d%s "
+ "[%d/%d] q%d p%d)",
+ speed_char (scratch),
+ scratch & 0x007f,
+ (scratch >> 8) & 0x000f, type,
+ p.qh->usecs, p.qh->c_usecs,
+ temp,
+ 0x7ff & (scratch >> 16));
+
+ if (seen_count < DBG_SCHED_LIMIT)
+ seen [seen_count++].qh = p.qh;
+ } else
+ temp = 0;
+ if (p.qh) {
+ tag = Q_NEXT_TYPE (p.qh->hw_next);
+ p = p.qh->qh_next;
+ }
+ break;
+ case Q_TYPE_FSTN:
+ temp = scnprintf (next, size,
+ " fstn-%8x/%p", p.fstn->hw_prev,
+ p.fstn);
+ tag = Q_NEXT_TYPE (p.fstn->hw_next);
+ p = p.fstn->fstn_next;
+ break;
+ case Q_TYPE_ITD:
+ temp = scnprintf (next, size,
+ " itd/%p", p.itd);
+ tag = Q_NEXT_TYPE (p.itd->hw_next);
+ p = p.itd->itd_next;
+ break;
+ case Q_TYPE_SITD:
+ temp = scnprintf (next, size,
+ " sitd%d-%04x/%p",
+ p.sitd->stream->interval,
+ le32_to_cpup (&p.sitd->hw_uframe)
+ & 0x0000ffff,
+ p.sitd);
+ tag = Q_NEXT_TYPE (p.sitd->hw_next);
+ p = p.sitd->sitd_next;
+ break;
+ }
+ size -= temp;
+ next += temp;
+ } while (p.ptr);
+
+ temp = scnprintf (next, size, "\n");
+ size -= temp;
+ next += temp;
+ }
+ spin_unlock_irqrestore (&ehci->lock, flags);
+ kfree (seen);
+
+ return PAGE_SIZE - size;
+}
+static CLASS_DEVICE_ATTR (periodic, S_IRUGO, show_periodic, NULL);
+
+#undef DBG_SCHED_LIMIT
+
+static ssize_t
+show_registers (struct class_device *class_dev, char *buf)
+{
+ struct usb_bus *bus;
+ struct usb_hcd *hcd;
+ struct ehci_hcd *ehci;
+ unsigned long flags;
+ unsigned temp, size, i;
+ char *next, scratch [80];
+ static char fmt [] = "%*s\n";
+ static char label [] = "";
+
+ bus = to_usb_bus(class_dev);
+ hcd = bus->hcpriv;
+ ehci = hcd_to_ehci (hcd);
+ next = buf;
+ size = PAGE_SIZE;
+
+ spin_lock_irqsave (&ehci->lock, flags);
+
+ if (bus->controller->power.power_state) {
+ size = scnprintf (next, size,
+ "bus %s, device %s (driver " DRIVER_VERSION ")\n"
+ "SUSPENDED (no register access)\n",
+ hcd->self.controller->bus->name,
+ hcd->self.controller->bus_id);
+ goto done;
+ }
+
+ /* Capability Registers */
+ i = HC_VERSION(readl (&ehci->caps->hc_capbase));
+ temp = scnprintf (next, size,
+ "bus %s, device %s (driver " DRIVER_VERSION ")\n"
+ "EHCI %x.%02x, hcd state %d\n",
+ hcd->self.controller->bus->name,
+ hcd->self.controller->bus_id,
+ i >> 8, i & 0x0ff, hcd->state);
+ size -= temp;
+ next += temp;
+
+ // FIXME interpret both types of params
+ i = readl (&ehci->caps->hcs_params);
+ temp = scnprintf (next, size, "structural params 0x%08x\n", i);
+ size -= temp;
+ next += temp;
+
+ i = readl (&ehci->caps->hcc_params);
+ temp = scnprintf (next, size, "capability params 0x%08x\n", i);
+ size -= temp;
+ next += temp;
+
+ /* Operational Registers */
+ temp = dbg_status_buf (scratch, sizeof scratch, label,
+ readl (&ehci->regs->status));
+ temp = scnprintf (next, size, fmt, temp, scratch);
+ size -= temp;
+ next += temp;
+
+ temp = dbg_command_buf (scratch, sizeof scratch, label,
+ readl (&ehci->regs->command));
+ temp = scnprintf (next, size, fmt, temp, scratch);
+ size -= temp;
+ next += temp;
+
+ temp = dbg_intr_buf (scratch, sizeof scratch, label,
+ readl (&ehci->regs->intr_enable));
+ temp = scnprintf (next, size, fmt, temp, scratch);
+ size -= temp;
+ next += temp;
+
+ temp = scnprintf (next, size, "uframe %04x\n",
+ readl (&ehci->regs->frame_index));
+ size -= temp;
+ next += temp;
+
+ for (i = 0; i < HCS_N_PORTS (ehci->hcs_params); i++) {
+ temp = dbg_port_buf (scratch, sizeof scratch, label, i + 1,
+ readl (&ehci->regs->port_status [i]));
+ temp = scnprintf (next, size, fmt, temp, scratch);
+ size -= temp;
+ next += temp;
+ }
+
+ if (ehci->reclaim) {
+ temp = scnprintf (next, size, "reclaim qh %p%s\n",
+ ehci->reclaim,
+ ehci->reclaim_ready ? " ready" : "");
+ size -= temp;
+ next += temp;
+ }
+
+#ifdef EHCI_STATS
+ temp = scnprintf (next, size,
+ "irq normal %ld err %ld reclaim %ld (lost %ld)\n",
+ ehci->stats.normal, ehci->stats.error, ehci->stats.reclaim,
+ ehci->stats.lost_iaa);
+ size -= temp;
+ next += temp;
+
+ temp = scnprintf (next, size, "complete %ld unlink %ld\n",
+ ehci->stats.complete, ehci->stats.unlink);
+ size -= temp;
+ next += temp;
+#endif
+
+done:
+ spin_unlock_irqrestore (&ehci->lock, flags);
+
+ return PAGE_SIZE - size;
+}
+static CLASS_DEVICE_ATTR (registers, S_IRUGO, show_registers, NULL);
+
+static inline void create_debug_files (struct ehci_hcd *ehci)
+{
+ struct class_device *cldev = &ehci_to_hcd(ehci)->self.class_dev;
+
+ class_device_create_file(cldev, &class_device_attr_async);
+ class_device_create_file(cldev, &class_device_attr_periodic);
+ class_device_create_file(cldev, &class_device_attr_registers);
+}
+
+static inline void remove_debug_files (struct ehci_hcd *ehci)
+{
+ struct class_device *cldev = &ehci_to_hcd(ehci)->self.class_dev;
+
+ class_device_remove_file(cldev, &class_device_attr_async);
+ class_device_remove_file(cldev, &class_device_attr_periodic);
+ class_device_remove_file(cldev, &class_device_attr_registers);
+}
+
+#endif /* STUB_DEBUG_FILES */
+
