diff options
Diffstat (limited to 'drivers/usb/host/ehci-dbg.c')
| -rw-r--r-- | drivers/usb/host/ehci-dbg.c | 708 |
1 files changed, 494 insertions, 214 deletions
diff --git a/drivers/usb/host/ehci-dbg.c b/drivers/usb/host/ehci-dbg.c index 65ac9fef3a7..524cbf26d99 100644 --- a/drivers/usb/host/ehci-dbg.c +++ b/drivers/usb/host/ehci-dbg.c @@ -1,6 +1,6 @@ /* * 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 @@ -18,24 +18,7 @@ /* 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 +#ifdef CONFIG_DYNAMIC_DEBUG /* check the values in the HCSPARAMS register * (host controller _Structural_ parameters) @@ -43,7 +26,7 @@ */ static void dbg_hcs_params (struct ehci_hcd *ehci, char *label) { - u32 params = readl (&ehci->caps->hcs_params); + u32 params = ehci_readl(ehci, &ehci->caps->hcs_params); ehci_dbg (ehci, "%s hcs_params 0x%x dbg=%d%s cc=%d pcc=%d%s%s ports=%d\n", @@ -52,7 +35,7 @@ static void dbg_hcs_params (struct ehci_hcd *ehci, char *label) HCS_INDICATOR (params) ? " ind" : "", HCS_N_CC (params), HCS_N_PCC (params), - HCS_PORTROUTED (params) ? "" : " ordered", + HCS_PORTROUTED (params) ? "" : " ordered", HCS_PPC (params) ? "" : " !ppc", HCS_N_PORTS (params) ); @@ -65,7 +48,7 @@ static void dbg_hcs_params (struct ehci_hcd *ehci, char *label) for (i = 0; i < HCS_N_PORTS (params); i++) { // FIXME MIPS won't readb() ... byte = readb (&ehci->caps->portroute[(i>>1)]); - sprintf(tmp, "%d ", + sprintf(tmp, "%d ", ((i & 0x1) ? ((byte)&0xf) : ((byte>>4)&0xf))); strcat(buf, tmp); } @@ -79,7 +62,7 @@ static inline void dbg_hcs_params (struct ehci_hcd *ehci, char *label) {} #endif -#ifdef DEBUG +#ifdef CONFIG_DYNAMIC_DEBUG /* check the values in the HCCPARAMS register * (host controller _Capability_ parameters) @@ -87,24 +70,29 @@ static inline void dbg_hcs_params (struct ehci_hcd *ehci, char *label) {} * */ static void dbg_hcc_params (struct ehci_hcd *ehci, char *label) { - u32 params = readl (&ehci->caps->hcc_params); + u32 params = ehci_readl(ehci, &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" : ""); + "%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" : ""); + "%s hcc_params %04x thresh %d uframes %s%s%s%s%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" : "", + HCC_LPM(params) ? " LPM" : "", + HCC_PER_PORT_CHANGE_EVENT(params) ? " ppce" : "", + HCC_HW_PREFETCH(params) ? " hw prefetch" : "", + HCC_32FRAME_PERIODIC_LIST(params) ? + " 32 periodic list" : ""); } } #else @@ -113,83 +101,87 @@ static inline void dbg_hcc_params (struct ehci_hcd *ehci, char *label) {} #endif -#ifdef DEBUG +#ifdef CONFIG_DYNAMIC_DEBUG -static void __attribute__((__unused__)) +static void __maybe_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])); + ehci_dbg(ehci, "%s td %p n%08x %08x t%08x p0=%08x\n", label, qtd, + hc32_to_cpup(ehci, &qtd->hw_next), + hc32_to_cpup(ehci, &qtd->hw_alt_next), + hc32_to_cpup(ehci, &qtd->hw_token), + hc32_to_cpup(ehci, &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])); + ehci_dbg(ehci, " p1=%08x p2=%08x p3=%08x p4=%08x\n", + hc32_to_cpup(ehci, &qtd->hw_buf[1]), + hc32_to_cpup(ehci, &qtd->hw_buf[2]), + hc32_to_cpup(ehci, &qtd->hw_buf[3]), + hc32_to_cpup(ehci, &qtd->hw_buf[4])); } -static void __attribute__((__unused__)) +static void __maybe_unused dbg_qh (const char *label, struct ehci_hcd *ehci, struct ehci_qh *qh) { + struct ehci_qh_hw *hw = qh->hw; + 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); + qh, hw->hw_next, hw->hw_info1, hw->hw_info2, hw->hw_current); + dbg_qtd("overlay", ehci, (struct ehci_qtd *) &hw->hw_qtd_next); } -static void __attribute__((__unused__)) -dbg_itd (const char *label, struct ehci_hcd *ehci, struct ehci_itd *itd) +static void __maybe_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); + label, itd->frame, itd, hc32_to_cpu(ehci, 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])); + " trans: %08x %08x %08x %08x %08x %08x %08x %08x\n", + hc32_to_cpu(ehci, itd->hw_transaction[0]), + hc32_to_cpu(ehci, itd->hw_transaction[1]), + hc32_to_cpu(ehci, itd->hw_transaction[2]), + hc32_to_cpu(ehci, itd->hw_transaction[3]), + hc32_to_cpu(ehci, itd->hw_transaction[4]), + hc32_to_cpu(ehci, itd->hw_transaction[5]), + hc32_to_cpu(ehci, itd->hw_transaction[6]), + hc32_to_cpu(ehci, 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])); + " buf: %08x %08x %08x %08x %08x %08x %08x\n", + hc32_to_cpu(ehci, itd->hw_bufp[0]), + hc32_to_cpu(ehci, itd->hw_bufp[1]), + hc32_to_cpu(ehci, itd->hw_bufp[2]), + hc32_to_cpu(ehci, itd->hw_bufp[3]), + hc32_to_cpu(ehci, itd->hw_bufp[4]), + hc32_to_cpu(ehci, itd->hw_bufp[5]), + hc32_to_cpu(ehci, 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) +static void __maybe_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); + label, sitd->frame, sitd, hc32_to_cpu(ehci, 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])); + " addr %08x sched %04x result %08x buf %08x %08x\n", + hc32_to_cpu(ehci, sitd->hw_fullspeed_ep), + hc32_to_cpu(ehci, sitd->hw_uframe), + hc32_to_cpu(ehci, sitd->hw_results), + hc32_to_cpu(ehci, sitd->hw_buf[0]), + hc32_to_cpu(ehci, sitd->hw_buf[1])); } -static int __attribute__((__unused__)) +static int __maybe_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", + "%s%sstatus %04x%s%s%s%s%s%s%s%s%s%s%s", label, label [0] ? " " : "", status, + (status & STS_PPCE_MASK) ? " PPCE" : "", (status & STS_ASS) ? " Async" : "", (status & STS_PSS) ? " Periodic" : "", (status & STS_RECL) ? " Recl" : "", @@ -203,12 +195,13 @@ dbg_status_buf (char *buf, unsigned len, const char *label, u32 status) ); } -static int __attribute__((__unused__)) +static int __maybe_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", + "%s%sintrenable %02x%s%s%s%s%s%s%s", label, label [0] ? " " : "", enable, + (enable & STS_PPCE_MASK) ? " PPCE" : "", (enable & STS_IAA) ? " IAA" : "", (enable & STS_FATAL) ? " FATAL" : "", (enable & STS_FLR) ? " FLR" : "", @@ -225,9 +218,15 @@ 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", + "%s%scommand %07x %s%s%s%s%s%s=%d ithresh=%d%s%s%s%s " + "period=%s%s %s", label, label [0] ? " " : "", command, - (command & CMD_PARK) ? "park" : "(park)", + (command & CMD_HIRD) ? " HIRD" : "", + (command & CMD_PPCEE) ? " PPCEE" : "", + (command & CMD_FSP) ? " FSP" : "", + (command & CMD_ASPE) ? " ASPE" : "", + (command & CMD_PSPE) ? " PSPE" : "", + (command & CMD_PARK) ? " park" : "(park)", CMD_PARK_CNT (command), (command >> 16) & 0x3f, (command & CMD_LRESET) ? " LReset" : "", @@ -254,11 +253,22 @@ dbg_port_buf (char *buf, unsigned len, const char *label, int port, u32 status) } return scnprintf (buf, len, - "%s%sport %d status %06x%s%s sig=%s%s%s%s%s%s%s%s%s%s", + "%s%sport:%d status %06x %d %s%s%s%s%s%s " + "sig=%s%s%s%s%s%s%s%s%s%s%s", label, label [0] ? " " : "", port, status, + status>>25,/*device address */ + (status & PORT_SSTS)>>23 == PORTSC_SUSPEND_STS_ACK ? + " ACK" : "", + (status & PORT_SSTS)>>23 == PORTSC_SUSPEND_STS_NYET ? + " NYET" : "", + (status & PORT_SSTS)>>23 == PORTSC_SUSPEND_STS_STALL ? + " STALL" : "", + (status & PORT_SSTS)>>23 == PORTSC_SUSPEND_STS_ERR ? + " ERR" : "", (status & PORT_POWER) ? " POWER" : "", (status & PORT_OWNER) ? " OWNER" : "", sig, + (status & PORT_LPM) ? " LPM" : "", (status & PORT_RESET) ? " RESET" : "", (status & PORT_SUSPEND) ? " SUSPEND" : "", (status & PORT_RESUME) ? " RESUME" : "", @@ -267,32 +277,31 @@ dbg_port_buf (char *buf, unsigned len, const char *label, int port, u32 status) (status & PORT_PEC) ? " PEC" : "", (status & PORT_PE) ? " PE" : "", (status & PORT_CSC) ? " CSC" : "", - (status & PORT_CONNECT) ? " CONNECT" : "" - ); + (status & PORT_CONNECT) ? " CONNECT" : ""); } #else -static inline void __attribute__((__unused__)) +static inline void __maybe_unused dbg_qh (char *label, struct ehci_hcd *ehci, struct ehci_qh *qh) {} -static inline int __attribute__((__unused__)) +static inline int __maybe_unused dbg_status_buf (char *buf, unsigned len, const char *label, u32 status) { return 0; } -static inline int __attribute__((__unused__)) +static inline int __maybe_unused dbg_command_buf (char *buf, unsigned len, const char *label, u32 command) { return 0; } -static inline int __attribute__((__unused__)) +static inline int __maybe_unused dbg_intr_buf (char *buf, unsigned len, const char *label, u32 enable) { return 0; } -static inline int __attribute__((__unused__)) +static inline int __maybe_unused dbg_port_buf (char *buf, unsigned len, const char *label, int port, u32 status) { return 0; } -#endif /* DEBUG */ +#endif /* CONFIG_DYNAMIC_DEBUG */ /* functions have the "wrong" filename when they're output... */ #define dbg_status(ehci, label, status) { \ @@ -322,19 +331,68 @@ static inline void remove_debug_files (struct ehci_hcd *bus) { } #else -/* troubleshooting help: expose state in driverfs */ +/* troubleshooting help: expose state in debugfs */ + +static int debug_async_open(struct inode *, struct file *); +static int debug_bandwidth_open(struct inode *, struct file *); +static int debug_periodic_open(struct inode *, struct file *); +static int debug_registers_open(struct inode *, struct file *); + +static ssize_t debug_output(struct file*, char __user*, size_t, loff_t*); +static int debug_close(struct inode *, struct file *); + +static const struct file_operations debug_async_fops = { + .owner = THIS_MODULE, + .open = debug_async_open, + .read = debug_output, + .release = debug_close, + .llseek = default_llseek, +}; +static const struct file_operations debug_bandwidth_fops = { + .owner = THIS_MODULE, + .open = debug_bandwidth_open, + .read = debug_output, + .release = debug_close, + .llseek = default_llseek, +}; +static const struct file_operations debug_periodic_fops = { + .owner = THIS_MODULE, + .open = debug_periodic_open, + .read = debug_output, + .release = debug_close, + .llseek = default_llseek, +}; +static const struct file_operations debug_registers_fops = { + .owner = THIS_MODULE, + .open = debug_registers_open, + .read = debug_output, + .release = debug_close, + .llseek = default_llseek, +}; + +static struct dentry *ehci_debug_root; + +struct debug_buffer { + ssize_t (*fill_func)(struct debug_buffer *); /* fill method */ + struct usb_bus *bus; + struct mutex mutex; /* protect filling of buffer */ + size_t count; /* number of characters filled into buffer */ + char *output_buf; + size_t alloc_size; +}; #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; \ + case QH_FULL_SPEED: tmp = 'f'; break; \ + case QH_LOW_SPEED: tmp = 'l'; break; \ + case QH_HIGH_SPEED: tmp = 'h'; break; \ default: tmp = '?'; break; \ - }; tmp; }) + } tmp; }) -static inline char token_mark (__le32 token) +static inline char token_mark(struct ehci_hcd *ehci, __hc32 token) { - __u32 v = le32_to_cpu (token); + __u32 v = hc32_to_cpu(ehci, token); + if (v & QTD_STS_ACTIVE) return '*'; if (v & QTD_STS_HALT) @@ -360,46 +418,49 @@ static void qh_lines ( unsigned size = *sizep; char *next = *nextp; char mark; + __le32 list_end = EHCI_LIST_END(ehci); + struct ehci_qh_hw *hw = qh->hw; - if (qh->hw_qtd_next == EHCI_LIST_END) /* NEC does this */ + if (hw->hw_qtd_next == list_end) /* NEC does this */ mark = '@'; else - mark = token_mark (qh->hw_token); + mark = token_mark(ehci, hw->hw_token); if (mark == '/') { /* qh_alt_next controls qh advance? */ - if ((qh->hw_alt_next & QTD_MASK) == ehci->async->hw_alt_next) + if ((hw->hw_alt_next & QTD_MASK(ehci)) + == ehci->async->hw->hw_alt_next) mark = '#'; /* blocked */ - else if (qh->hw_alt_next == EHCI_LIST_END) + else if (hw->hw_alt_next == 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; + scratch = hc32_to_cpup(ehci, &hw->hw_info1); + hw_curr = (mark == '*') ? hc32_to_cpup(ehci, &hw->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) + scratch, hc32_to_cpup(ehci, &hw->hw_info2), + hc32_to_cpup(ehci, &hw->hw_token), mark, + (cpu_to_hc32(ehci, QTD_TOGGLE) & hw->hw_token) ? "data1" : "data0", - (le32_to_cpup (&qh->hw_alt_next) >> 1) & 0x0f); + (hc32_to_cpup(ehci, &hw->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); + scratch = hc32_to_cpup(ehci, &td->hw_token); mark = ' '; if (hw_curr == td->qtd_dma) mark = '*'; - else if (qh->hw_qtd_next == cpu_to_le32(td->qtd_dma)) + else if (hw->hw_qtd_next == cpu_to_hc32(ehci, td->qtd_dma)) mark = '+'; else if (QTD_LENGTH (scratch)) { - if (td->hw_alt_next == ehci->async->hw_alt_next) + if (td->hw_alt_next == ehci->async->hw->hw_alt_next) mark = '#'; - else if (td->hw_alt_next != EHCI_LIST_END) + else if (td->hw_alt_next != list_end) mark = '/'; } temp = snprintf (next, size, @@ -414,9 +475,7 @@ static void qh_lines ( (scratch >> 16) & 0x7fff, scratch, td->urb); - if (temp < 0) - temp = 0; - else if (size < temp) + if (size < temp) temp = size; size -= temp; next += temp; @@ -425,9 +484,7 @@ static void qh_lines ( } temp = snprintf (next, size, "\n"); - if (temp < 0) - temp = 0; - else if (size < temp) + if (size < temp) temp = size; size -= temp; next += temp; @@ -437,10 +494,8 @@ done: *nextp = next; } -static ssize_t -show_async (struct class_device *class_dev, char *buf) +static ssize_t fill_async_buffer(struct debug_buffer *buf) { - struct usb_bus *bus; struct usb_hcd *hcd; struct ehci_hcd *ehci; unsigned long flags; @@ -448,13 +503,12 @@ show_async (struct class_device *class_dev, char *buf) char *next; struct ehci_qh *qh; - *buf = 0; - - bus = class_get_devdata(class_dev); - hcd = bus->hcpriv; + hcd = bus_to_hcd(buf->bus); ehci = hcd_to_ehci (hcd); - next = buf; - size = PAGE_SIZE; + next = buf->output_buf; + size = buf->alloc_size; + + *next = 0; /* dumps a snapshot of the async schedule. * usually empty except for long-term bulk reads, or head. @@ -463,26 +517,108 @@ show_async (struct class_device *class_dev, char *buf) 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"); + if (!list_empty(&ehci->async_unlink) && size > 0) { + temp = scnprintf(next, size, "\nunlink =\n"); size -= temp; next += temp; - for (qh = ehci->reclaim; size > 0 && qh; qh = qh->reclaim) - qh_lines (ehci, qh, &next, &size); + list_for_each_entry(qh, &ehci->async_unlink, unlink_node) { + if (size <= 0) + break; + qh_lines(ehci, qh, &next, &size); + } } spin_unlock_irqrestore (&ehci->lock, flags); - return strlen (buf); + return strlen(buf->output_buf); } -static CLASS_DEVICE_ATTR (async, S_IRUGO, show_async, NULL); -#define DBG_SCHED_LIMIT 64 +static ssize_t fill_bandwidth_buffer(struct debug_buffer *buf) +{ + struct ehci_hcd *ehci; + struct ehci_tt *tt; + struct ehci_per_sched *ps; + unsigned temp, size; + char *next; + unsigned i; + u8 *bw; + u16 *bf; + u8 budget[EHCI_BANDWIDTH_SIZE]; + + ehci = hcd_to_ehci(bus_to_hcd(buf->bus)); + next = buf->output_buf; + size = buf->alloc_size; + + *next = 0; -static ssize_t -show_periodic (struct class_device *class_dev, char *buf) + spin_lock_irq(&ehci->lock); + + /* Dump the HS bandwidth table */ + temp = scnprintf(next, size, + "HS bandwidth allocation (us per microframe)\n"); + size -= temp; + next += temp; + for (i = 0; i < EHCI_BANDWIDTH_SIZE; i += 8) { + bw = &ehci->bandwidth[i]; + temp = scnprintf(next, size, + "%2u: %4u%4u%4u%4u%4u%4u%4u%4u\n", + i, bw[0], bw[1], bw[2], bw[3], + bw[4], bw[5], bw[6], bw[7]); + size -= temp; + next += temp; + } + + /* Dump all the FS/LS tables */ + list_for_each_entry(tt, &ehci->tt_list, tt_list) { + temp = scnprintf(next, size, + "\nTT %s port %d FS/LS bandwidth allocation (us per frame)\n", + dev_name(&tt->usb_tt->hub->dev), + tt->tt_port + !!tt->usb_tt->multi); + size -= temp; + next += temp; + + bf = tt->bandwidth; + temp = scnprintf(next, size, + " %5u%5u%5u%5u%5u%5u%5u%5u\n", + bf[0], bf[1], bf[2], bf[3], + bf[4], bf[5], bf[6], bf[7]); + size -= temp; + next += temp; + + temp = scnprintf(next, size, + "FS/LS budget (us per microframe)\n"); + size -= temp; + next += temp; + compute_tt_budget(budget, tt); + for (i = 0; i < EHCI_BANDWIDTH_SIZE; i += 8) { + bw = &budget[i]; + temp = scnprintf(next, size, + "%2u: %4u%4u%4u%4u%4u%4u%4u%4u\n", + i, bw[0], bw[1], bw[2], bw[3], + bw[4], bw[5], bw[6], bw[7]); + size -= temp; + next += temp; + } + list_for_each_entry(ps, &tt->ps_list, ps_list) { + temp = scnprintf(next, size, + "%s ep %02x: %4u @ %2u.%u+%u mask %04x\n", + dev_name(&ps->udev->dev), + ps->ep->desc.bEndpointAddress, + ps->tt_usecs, + ps->bw_phase, ps->phase_uf, + ps->bw_period, ps->cs_mask); + size -= temp; + next += temp; + } + } + spin_unlock_irq(&ehci->lock); + + return next - buf->output_buf; +} + +#define DBG_SCHED_LIMIT 64 +static ssize_t fill_periodic_buffer(struct debug_buffer *buf) { - struct usb_bus *bus; struct usb_hcd *hcd; struct ehci_hcd *ehci; unsigned long flags; @@ -490,17 +626,16 @@ show_periodic (struct class_device *class_dev, char *buf) unsigned temp, size, seen_count; char *next; unsigned i; - __le32 tag; + __hc32 tag; - if (!(seen = kmalloc (DBG_SCHED_LIMIT * sizeof *seen, SLAB_ATOMIC))) + if (!(seen = kmalloc (DBG_SCHED_LIMIT * sizeof *seen, GFP_ATOMIC))) return 0; seen_count = 0; - bus = class_get_devdata(class_dev); - hcd = bus->hcpriv; + hcd = bus_to_hcd(buf->bus); ehci = hcd_to_ehci (hcd); - next = buf; - size = PAGE_SIZE; + next = buf->output_buf; + size = buf->alloc_size; temp = scnprintf (next, size, "size = %d\n", ehci->periodic_size); size -= temp; @@ -514,18 +649,22 @@ show_periodic (struct class_device *class_dev, char *buf) p = ehci->pshadow [i]; if (likely (!p.ptr)) continue; - tag = Q_NEXT_TYPE (ehci->periodic [i]); + tag = Q_NEXT_TYPE(ehci, ehci->periodic [i]); temp = scnprintf (next, size, "%4d: ", i); size -= temp; next += temp; do { - switch (tag) { + struct ehci_qh_hw *hw; + + switch (hc32_to_cpu(ehci, tag)) { case Q_TYPE_QH: + hw = p.qh->hw; temp = scnprintf (next, size, " qh%d-%04x/%p", - p.qh->period, - le32_to_cpup (&p.qh->hw_info2) + p.qh->ps.period, + hc32_to_cpup(ehci, + &hw->hw_info2) /* uframe masks */ & (QH_CMASK | QH_SMASK), p.qh); @@ -535,16 +674,18 @@ show_periodic (struct class_device *class_dev, char *buf) for (temp = 0; temp < seen_count; temp++) { if (seen [temp].ptr != p.ptr) continue; - if (p.qh->qh_next.ptr) + if (p.qh->qh_next.ptr) { temp = scnprintf (next, size, " ..."); - p.ptr = NULL; + size -= temp; + next += temp; + } break; } /* show more info the first time around */ - if (temp == seen_count && p.ptr) { - u32 scratch = le32_to_cpup ( - &p.qh->hw_info1); + if (temp == seen_count) { + u32 scratch = hc32_to_cpup(ehci, + &hw->hw_info1); struct ehci_qtd *qtd; char *type = ""; @@ -554,7 +695,8 @@ show_periodic (struct class_device *class_dev, char *buf) &p.qh->qtd_list, qtd_list) { temp++; - switch (0x03 & (le32_to_cpu ( + switch (0x03 & (hc32_to_cpu( + ehci, qtd->hw_token) >> 8)) { case 0: type = "out"; continue; case 1: type = "in"; continue; @@ -567,7 +709,8 @@ show_periodic (struct class_device *class_dev, char *buf) speed_char (scratch), scratch & 0x007f, (scratch >> 8) & 0x000f, type, - p.qh->usecs, p.qh->c_usecs, + p.qh->ps.usecs, + p.qh->ps.c_usecs, temp, 0x7ff & (scratch >> 16)); @@ -575,32 +718,30 @@ show_periodic (struct class_device *class_dev, char *buf) 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; - } + tag = Q_NEXT_TYPE(ehci, hw->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); + tag = Q_NEXT_TYPE(ehci, 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); + tag = Q_NEXT_TYPE(ehci, 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) + p.sitd->stream->ps.period, + hc32_to_cpup(ehci, &p.sitd->hw_uframe) & 0x0000ffff, p.sitd); - tag = Q_NEXT_TYPE (p.sitd->hw_next); + tag = Q_NEXT_TYPE(ehci, p.sitd->hw_next); p = p.sitd->sitd_next; break; } @@ -615,16 +756,27 @@ show_periodic (struct class_device *class_dev, char *buf) spin_unlock_irqrestore (&ehci->lock, flags); kfree (seen); - return PAGE_SIZE - size; + return buf->alloc_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) +static const char *rh_state_string(struct ehci_hcd *ehci) +{ + switch (ehci->rh_state) { + case EHCI_RH_HALTED: + return "halted"; + case EHCI_RH_SUSPENDED: + return "suspended"; + case EHCI_RH_RUNNING: + return "running"; + case EHCI_RH_STOPPING: + return "stopping"; + } + return "?"; +} + +static ssize_t fill_registers_buffer(struct debug_buffer *buf) { - struct usb_bus *bus; struct usb_hcd *hcd; struct ehci_hcd *ehci; unsigned long flags; @@ -633,47 +785,47 @@ show_registers (struct class_device *class_dev, char *buf) static char fmt [] = "%*s\n"; static char label [] = ""; - bus = class_get_devdata(class_dev); - hcd = bus->hcpriv; + hcd = bus_to_hcd(buf->bus); ehci = hcd_to_ehci (hcd); - next = buf; - size = PAGE_SIZE; + next = buf->output_buf; + size = buf->alloc_size; spin_lock_irqsave (&ehci->lock, flags); - if (bus->controller->power.power_state.event) { + if (!HCD_HW_ACCESSIBLE(hcd)) { size = scnprintf (next, size, - "bus %s, device %s (driver " DRIVER_VERSION ")\n" + "bus %s, device %s\n" "%s\n" "SUSPENDED (no register access)\n", hcd->self.controller->bus->name, - hcd->self.controller->bus_id, + dev_name(hcd->self.controller), hcd->product_desc); goto done; } /* Capability Registers */ - i = HC_VERSION(readl (&ehci->caps->hc_capbase)); + i = HC_VERSION(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase)); temp = scnprintf (next, size, - "bus %s, device %s (driver " DRIVER_VERSION ")\n" + "bus %s, device %s\n" "%s\n" - "EHCI %x.%02x, hcd state %d\n", + "EHCI %x.%02x, rh state %s\n", hcd->self.controller->bus->name, - hcd->self.controller->bus_id, + dev_name(hcd->self.controller), hcd->product_desc, - i >> 8, i & 0x0ff, hcd->state); + i >> 8, i & 0x0ff, rh_state_string(ehci)); size -= temp; next += temp; #ifdef CONFIG_PCI /* EHCI 0.96 and later may have "extended capabilities" */ - if (hcd->self.controller->bus == &pci_bus_type) { + if (dev_is_pci(hcd->self.controller)) { struct pci_dev *pdev; u32 offset, cap, cap2; unsigned count = 256/4; pdev = to_pci_dev(ehci_to_hcd(ehci)->self.controller); - offset = HCC_EXT_CAPS (readl (&ehci->caps->hcc_params)); + offset = HCC_EXT_CAPS(ehci_readl(ehci, + &ehci->caps->hcc_params)); while (offset && count--) { pci_read_config_dword (pdev, offset, &cap); switch (cap & 0xff) { @@ -704,67 +856,69 @@ show_registers (struct class_device *class_dev, char *buf) #endif // FIXME interpret both types of params - i = readl (&ehci->caps->hcs_params); + i = ehci_readl(ehci, &ehci->caps->hcs_params); temp = scnprintf (next, size, "structural params 0x%08x\n", i); size -= temp; next += temp; - i = readl (&ehci->caps->hcc_params); + i = ehci_readl(ehci, &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)); + ehci_readl(ehci, &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)); + ehci_readl(ehci, &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)); + ehci_readl(ehci, &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)); + ehci_read_frame_index(ehci)); size -= temp; next += temp; for (i = 1; i <= HCS_N_PORTS (ehci->hcs_params); i++) { temp = dbg_port_buf (scratch, sizeof scratch, label, i, - readl (&ehci->regs->port_status [i - 1])); + ehci_readl(ehci, + &ehci->regs->port_status[i - 1])); temp = scnprintf (next, size, fmt, temp, scratch); size -= temp; next += temp; if (i == HCS_DEBUG_PORT(ehci->hcs_params) && ehci->debug) { temp = scnprintf (next, size, " debug control %08x\n", - readl (&ehci->debug->control)); + ehci_readl(ehci, + &ehci->debug->control)); size -= temp; next += temp; } } - if (ehci->reclaim) { - temp = scnprintf (next, size, "reclaim qh %p%s\n", - ehci->reclaim, - ehci->reclaim_ready ? " ready" : ""); + if (!list_empty(&ehci->async_unlink)) { + temp = scnprintf(next, size, "async unlink qh %p\n", + list_first_entry(&ehci->async_unlink, + struct ehci_qh, unlink_node)); 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, + "irq normal %ld err %ld iaa %ld (lost %ld)\n", + ehci->stats.normal, ehci->stats.error, ehci->stats.iaa, ehci->stats.lost_iaa); size -= temp; next += temp; @@ -778,27 +932,153 @@ show_registers (struct class_device *class_dev, char *buf) done: spin_unlock_irqrestore (&ehci->lock, flags); - return PAGE_SIZE - size; + return buf->alloc_size - size; +} + +static struct debug_buffer *alloc_buffer(struct usb_bus *bus, + ssize_t (*fill_func)(struct debug_buffer *)) +{ + struct debug_buffer *buf; + + buf = kzalloc(sizeof(struct debug_buffer), GFP_KERNEL); + + if (buf) { + buf->bus = bus; + buf->fill_func = fill_func; + mutex_init(&buf->mutex); + buf->alloc_size = PAGE_SIZE; + } + + return buf; +} + +static int fill_buffer(struct debug_buffer *buf) +{ + int ret = 0; + + if (!buf->output_buf) + buf->output_buf = vmalloc(buf->alloc_size); + + if (!buf->output_buf) { + ret = -ENOMEM; + goto out; + } + + ret = buf->fill_func(buf); + + if (ret >= 0) { + buf->count = ret; + ret = 0; + } + +out: + return ret; +} + +static ssize_t debug_output(struct file *file, char __user *user_buf, + size_t len, loff_t *offset) +{ + struct debug_buffer *buf = file->private_data; + int ret = 0; + + mutex_lock(&buf->mutex); + if (buf->count == 0) { + ret = fill_buffer(buf); + if (ret != 0) { + mutex_unlock(&buf->mutex); + goto out; + } + } + mutex_unlock(&buf->mutex); + + ret = simple_read_from_buffer(user_buf, len, offset, + buf->output_buf, buf->count); + +out: + return ret; + +} + +static int debug_close(struct inode *inode, struct file *file) +{ + struct debug_buffer *buf = file->private_data; + + if (buf) { + vfree(buf->output_buf); + kfree(buf); + } + + return 0; +} + +static int debug_async_open(struct inode *inode, struct file *file) +{ + file->private_data = alloc_buffer(inode->i_private, fill_async_buffer); + + return file->private_data ? 0 : -ENOMEM; +} + +static int debug_bandwidth_open(struct inode *inode, struct file *file) +{ + file->private_data = alloc_buffer(inode->i_private, + fill_bandwidth_buffer); + + return file->private_data ? 0 : -ENOMEM; +} + +static int debug_periodic_open(struct inode *inode, struct file *file) +{ + struct debug_buffer *buf; + buf = alloc_buffer(inode->i_private, fill_periodic_buffer); + if (!buf) + return -ENOMEM; + + buf->alloc_size = (sizeof(void *) == 4 ? 6 : 8)*PAGE_SIZE; + file->private_data = buf; + return 0; +} + +static int debug_registers_open(struct inode *inode, struct file *file) +{ + file->private_data = alloc_buffer(inode->i_private, + fill_registers_buffer); + + return file->private_data ? 0 : -ENOMEM; } -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; + struct usb_bus *bus = &ehci_to_hcd(ehci)->self; + + ehci->debug_dir = debugfs_create_dir(bus->bus_name, ehci_debug_root); + if (!ehci->debug_dir) + return; + + if (!debugfs_create_file("async", S_IRUGO, ehci->debug_dir, bus, + &debug_async_fops)) + goto file_error; - 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); + if (!debugfs_create_file("bandwidth", S_IRUGO, ehci->debug_dir, bus, + &debug_bandwidth_fops)) + goto file_error; + + if (!debugfs_create_file("periodic", S_IRUGO, ehci->debug_dir, bus, + &debug_periodic_fops)) + goto file_error; + + if (!debugfs_create_file("registers", S_IRUGO, ehci->debug_dir, bus, + &debug_registers_fops)) + goto file_error; + + return; + +file_error: + debugfs_remove_recursive(ehci->debug_dir); } 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); + debugfs_remove_recursive(ehci->debug_dir); } #endif /* STUB_DEBUG_FILES */ - |