diff options
Diffstat (limited to 'target/linux/adm5120/files-2.6.26/drivers/usb/host/adm5120-dbg.c')
| -rw-r--r-- | target/linux/adm5120/files-2.6.26/drivers/usb/host/adm5120-dbg.c | 842 |
1 files changed, 0 insertions, 842 deletions
diff --git a/target/linux/adm5120/files-2.6.26/drivers/usb/host/adm5120-dbg.c b/target/linux/adm5120/files-2.6.26/drivers/usb/host/adm5120-dbg.c deleted file mode 100644 index c121f7be2d..0000000000 --- a/target/linux/adm5120/files-2.6.26/drivers/usb/host/adm5120-dbg.c +++ /dev/null @@ -1,842 +0,0 @@ -/* - * ADM5120 HCD (Host Controller Driver) for USB - * - * Copyright (C) 2007-2008 Gabor Juhos <juhosg@openwrt.org> - * - * This file was derived from: drivers/usb/host/ohci-dbg.c - * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at> - * (C) Copyright 2000-2002 David Brownell <dbrownell@users.sourceforge.net> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published - * by the Free Software Foundation. - * - */ - -/*-------------------------------------------------------------------------*/ - -static inline char *ed_typestring(int ed_type) -{ - switch (ed_type) { - case PIPE_CONTROL: - return "ctrl"; - case PIPE_BULK: - return "bulk"; - case PIPE_INTERRUPT: - return "intr"; - case PIPE_ISOCHRONOUS: - return "isoc"; - } - return "(bad ed_type)"; -} - -static inline char *ed_statestring(int state) -{ - switch (state) { - case ED_IDLE: - return "IDLE"; - case ED_UNLINK: - return "UNLINK"; - case ED_OPER: - return "OPER"; - } - return "?STATE"; -} - -static inline char *pipestring(int pipe) -{ - return ed_typestring(usb_pipetype(pipe)); -} - -static inline char *td_pidstring(u32 info) -{ - switch (info & TD_DP) { - case TD_DP_SETUP: - return "SETUP"; - case TD_DP_IN: - return "IN"; - case TD_DP_OUT: - return "OUT"; - } - return "?PID"; -} - -static inline char *td_togglestring(u32 info) -{ - switch (info & TD_T) { - case TD_T_DATA0: - return "DATA0"; - case TD_T_DATA1: - return "DATA1"; - case TD_T_CARRY: - return "CARRY"; - } - return "?TOGGLE"; -} - -/*-------------------------------------------------------------------------*/ - -#ifdef DEBUG - -/* debug| print the main components of an URB - * small: 0) header + data packets 1) just header - */ -static void __attribute__((unused)) -urb_print(struct admhcd *ahcd, struct urb *urb, char *str, int small, int status) -{ - unsigned int pipe = urb->pipe; - - if (!urb->dev || !urb->dev->bus) { - admhc_dbg(ahcd, "%s URB: no dev", str); - return; - } - -#ifndef ADMHC_VERBOSE_DEBUG - if (status != 0) -#endif - admhc_dbg(ahcd, "URB-%s %p dev=%d ep=%d%s-%s flags=%x len=%d/%d " - "stat=%d\n", - str, - urb, - usb_pipedevice (pipe), - usb_pipeendpoint (pipe), - usb_pipeout(pipe)? "out" : "in", - pipestring(pipe), - urb->transfer_flags, - urb->actual_length, - urb->transfer_buffer_length, - status); - -#ifdef ADMHC_VERBOSE_DEBUG - if (!small) { - int i, len; - - if (usb_pipecontrol(pipe)) { - admhc_dbg(ahcd, "setup(8):"); - for (i = 0; i < 8 ; i++) - printk (" %02x", ((__u8 *) urb->setup_packet) [i]); - printk ("\n"); - } - if (urb->transfer_buffer_length > 0 && urb->transfer_buffer) { - admhc_dbg(ahcd, "data(%d/%d):", - urb->actual_length, - urb->transfer_buffer_length); - len = usb_pipeout(pipe)? - urb->transfer_buffer_length: urb->actual_length; - for (i = 0; i < 16 && i < len; i++) - printk(" %02x", ((__u8 *)urb->transfer_buffer)[i]); - printk("%s stat:%d\n", i < len? "...": "", status); - } - } -#endif /* ADMHC_VERBOSE_DEBUG */ -} - -#define admhc_dbg_sw(ahcd, next, size, format, arg...) \ - do { \ - if (next) { \ - unsigned s_len; \ - s_len = scnprintf(*next, *size, format, ## arg ); \ - *size -= s_len; *next += s_len; \ - } else \ - admhc_dbg(ahcd,format, ## arg ); \ - } while (0); - - -static void admhc_dump_intr_mask(struct admhcd *ahcd, char *label, u32 mask, - char **next, unsigned *size) -{ - admhc_dbg_sw(ahcd, next, size, "%s 0x%08x%s%s%s%s%s%s%s%s%s%s%s%s\n", - label, - mask, - (mask & ADMHC_INTR_INTA) ? " INTA" : "", - (mask & ADMHC_INTR_FATI) ? " FATI" : "", - (mask & ADMHC_INTR_SWI) ? " SWI" : "", - (mask & ADMHC_INTR_TDC) ? " TDC" : "", - (mask & ADMHC_INTR_FNO) ? " FNO" : "", - (mask & ADMHC_INTR_SO) ? " SO" : "", - (mask & ADMHC_INTR_INSM) ? " INSM" : "", - (mask & ADMHC_INTR_BABI) ? " BABI" : "", - (mask & ADMHC_INTR_7) ? " !7!" : "", - (mask & ADMHC_INTR_6) ? " !6!" : "", - (mask & ADMHC_INTR_RESI) ? " RESI" : "", - (mask & ADMHC_INTR_SOFI) ? " SOFI" : "" - ); -} - -static void maybe_print_eds(struct admhcd *ahcd, char *label, u32 value, - char **next, unsigned *size) -{ - if (value) - admhc_dbg_sw(ahcd, next, size, "%s %08x\n", label, value); -} - -static char *buss2string (int state) -{ - switch (state) { - case ADMHC_BUSS_RESET: - return "reset"; - case ADMHC_BUSS_RESUME: - return "resume"; - case ADMHC_BUSS_OPER: - return "operational"; - case ADMHC_BUSS_SUSPEND: - return "suspend"; - } - return "?state"; -} - -static void -admhc_dump_status(struct admhcd *ahcd, char **next, unsigned *size) -{ - struct admhcd_regs __iomem *regs = ahcd->regs; - u32 temp; - - temp = admhc_readl(ahcd, ®s->gencontrol); - admhc_dbg_sw(ahcd, next, size, - "gencontrol 0x%08x%s%s%s%s\n", - temp, - (temp & ADMHC_CTRL_UHFE) ? " UHFE" : "", - (temp & ADMHC_CTRL_SIR) ? " SIR" : "", - (temp & ADMHC_CTRL_DMAA) ? " DMAA" : "", - (temp & ADMHC_CTRL_SR) ? " SR" : "" - ); - - temp = admhc_readl(ahcd, ®s->host_control); - admhc_dbg_sw(ahcd, next, size, - "host_control 0x%08x BUSS=%s%s\n", - temp, - buss2string(temp & ADMHC_HC_BUSS), - (temp & ADMHC_HC_DMAE) ? " DMAE" : "" - ); - - admhc_dump_intr_mask(ahcd, "int_status", - admhc_readl(ahcd, ®s->int_status), - next, size); - admhc_dump_intr_mask(ahcd, "int_enable", - admhc_readl(ahcd, ®s->int_enable), - next, size); - - maybe_print_eds(ahcd, "hosthead", - admhc_readl(ahcd, ®s->hosthead), next, size); -} - -#define dbg_port_sw(hc,num,value,next,size) \ - admhc_dbg_sw(hc, next, size, \ - "portstatus [%d] " \ - "0x%08x%s%s%s%s%s%s%s%s%s%s%s%s\n", \ - num, temp, \ - (temp & ADMHC_PS_PRSC) ? " PRSC" : "", \ - (temp & ADMHC_PS_OCIC) ? " OCIC" : "", \ - (temp & ADMHC_PS_PSSC) ? " PSSC" : "", \ - (temp & ADMHC_PS_PESC) ? " PESC" : "", \ - (temp & ADMHC_PS_CSC) ? " CSC" : "", \ - \ - (temp & ADMHC_PS_LSDA) ? " LSDA" : "", \ - (temp & ADMHC_PS_PPS) ? " PPS" : "", \ - (temp & ADMHC_PS_PRS) ? " PRS" : "", \ - (temp & ADMHC_PS_POCI) ? " POCI" : "", \ - (temp & ADMHC_PS_PSS) ? " PSS" : "", \ - \ - (temp & ADMHC_PS_PES) ? " PES" : "", \ - (temp & ADMHC_PS_CCS) ? " CCS" : "" \ - ); - - -static void -admhc_dump_roothub( - struct admhcd *ahcd, - int verbose, - char **next, - unsigned *size) -{ - u32 temp, i; - - temp = admhc_read_rhdesc(ahcd); - if (temp == ~(u32)0) - return; - - if (verbose) { - admhc_dbg_sw(ahcd, next, size, - "rhdesc %08x%s%s%s%s%s%s PPCM=%02x%s%s%s%s NUMP=%d(%d)\n", - temp, - (temp & ADMHC_RH_CRWE) ? " CRWE" : "", - (temp & ADMHC_RH_OCIC) ? " OCIC" : "", - (temp & ADMHC_RH_LPSC) ? " LPSC" : "", - (temp & ADMHC_RH_LPSC) ? " DRWE" : "", - (temp & ADMHC_RH_LPSC) ? " OCI" : "", - (temp & ADMHC_RH_LPSC) ? " LPS" : "", - ((temp & ADMHC_RH_PPCM) >> 16), - (temp & ADMHC_RH_NOCP) ? " NOCP" : "", - (temp & ADMHC_RH_OCPM) ? " OCPM" : "", - (temp & ADMHC_RH_NPS) ? " NPS" : "", - (temp & ADMHC_RH_PSM) ? " PSM" : "", - (temp & ADMHC_RH_NUMP), ahcd->num_ports - ); - } - - for (i = 0; i < ahcd->num_ports; i++) { - temp = admhc_read_portstatus(ahcd, i); - dbg_port_sw(ahcd, i, temp, next, size); - } -} - -static void admhc_dump(struct admhcd *ahcd, int verbose) -{ - admhc_dbg(ahcd, "ADMHC ahcd state\n"); - - /* dumps some of the state we know about */ - admhc_dump_status(ahcd, NULL, NULL); - admhc_dbg(ahcd,"current frame #%04x\n", - admhc_frame_no(ahcd)); - - admhc_dump_roothub(ahcd, verbose, NULL, NULL); -} - -static const char data0[] = "DATA0"; -static const char data1[] = "DATA1"; - -static void admhc_dump_td(const struct admhcd *ahcd, const char *label, - const struct td *td) -{ - u32 tmp; - - admhc_dbg(ahcd, "%s td %p; urb %p index %d; hwNextTD %08x\n", - label, td, - td->urb, td->index, - hc32_to_cpup(ahcd, &td->hwNextTD)); - - tmp = hc32_to_cpup(ahcd, &td->hwINFO); - admhc_dbg(ahcd, " status %08x%s CC=%x EC=%d %s %s ISI=%x FN=%x\n", - tmp, - (tmp & TD_OWN) ? " OWN" : "", - TD_CC_GET(tmp), - TD_EC_GET(tmp), - td_togglestring(tmp), - td_pidstring(tmp), - TD_ISI_GET(tmp), - TD_FN_GET(tmp)); - - tmp = hc32_to_cpup(ahcd, &td->hwCBL); - admhc_dbg(ahcd, " dbp %08x; cbl %08x; LEN=%d%s\n", - hc32_to_cpup(ahcd, &td->hwDBP), - tmp, - TD_BL_GET(tmp), - (tmp & TD_IE) ? " IE" : ""); -} - -/* caller MUST own hcd spinlock if verbose is set! */ -static void __attribute__((unused)) -admhc_dump_ed(const struct admhcd *ahcd, const char *label, - const struct ed *ed, int verbose) -{ - u32 tmp = hc32_to_cpu(ahcd, ed->hwINFO); - - admhc_dbg(ahcd, "%s ed %p %s type %s; next ed %08x\n", - label, - ed, ed_statestring(ed->state), ed_typestring(ed->type), - hc32_to_cpup(ahcd, &ed->hwNextED)); - - admhc_dbg(ahcd, " info %08x MAX=%d%s%s%s%s EP=%d DEV=%d\n", tmp, - ED_MPS_GET(tmp), - (tmp & ED_ISO) ? " ISO" : "", - (tmp & ED_SKIP) ? " SKIP" : "", - (tmp & ED_SPEED_FULL) ? " FULL" : " LOW", - (tmp & ED_INT) ? " INT" : "", - ED_EN_GET(tmp), - ED_FA_GET(tmp)); - - tmp = hc32_to_cpup(ahcd, &ed->hwHeadP); - admhc_dbg(ahcd, " tds: head %08x tail %08x %s%s%s\n", - tmp & TD_MASK, - hc32_to_cpup (ahcd, &ed->hwTailP), - (tmp & ED_C) ? data1 : data0, - (tmp & ED_H) ? " HALT" : "", - verbose ? " td list follows" : " (not listing)"); - - if (verbose) { - struct list_head *tmp; - - /* use ed->td_list because HC concurrently modifies - * hwNextTD as it accumulates ed_donelist. - */ - list_for_each(tmp, &ed->td_list) { - struct td *td; - td = list_entry(tmp, struct td, td_list); - admhc_dump_td (ahcd, " ->", td); - } - } -} - -#else /* ifdef DEBUG */ - -static inline void urb_print(struct admhcd *ahcd, struct urb * urb, char * str, - int small) {} -static inline void admhc_dump_ed(const struct admhcd *ahcd, const char *label, - const struct ed *ed, int verbose) {} -static inline void admhc_dump_td(const struct admhcd *ahcd, const char *label, - const struct td *td) {} -static inline void admhc_dump(struct admhcd *ahcd, int verbose) {} - -#undef ADMHC_VERBOSE_DEBUG - -#endif /* DEBUG */ - -/*-------------------------------------------------------------------------*/ - -#ifdef STUB_DEBUG_FILES - -static inline void create_debug_files(struct admhcd *bus) { } -static inline void remove_debug_files(struct admhcd *bus) { } - -#else - -static int debug_async_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, -}; -static const struct file_operations debug_periodic_fops = { - .owner = THIS_MODULE, - .open = debug_periodic_open, - .read = debug_output, - .release = debug_close, -}; -static const struct file_operations debug_registers_fops = { - .owner = THIS_MODULE, - .open = debug_registers_open, - .read = debug_output, - .release = debug_close, -}; - -static struct dentry *admhc_debug_root; - -struct debug_buffer { - ssize_t (*fill_func)(struct debug_buffer *); /* fill method */ - struct device *dev; - struct mutex mutex; /* protect filling of buffer */ - size_t count; /* number of characters filled into buffer */ - char *page; -}; - -static ssize_t -show_list(struct admhcd *ahcd, char *buf, size_t count, struct ed *ed) -{ - unsigned temp; - unsigned size = count; - - if (!ed) - return 0; - - /* dump a snapshot of the bulk or control schedule */ - while (ed) { - u32 info = hc32_to_cpu(ahcd, ed->hwINFO); - u32 headp = hc32_to_cpu(ahcd, ed->hwHeadP); - u32 tailp = hc32_to_cpu(ahcd, ed->hwTailP); - struct list_head *entry; - struct td *td; - - temp = scnprintf(buf, size, - "ed/%p %s %s %cs dev%d ep%d %s%smax %d %08x%s%s %s" - " h:%08x t:%08x", - ed, - ed_statestring(ed->state), - ed_typestring (ed->type), - (info & ED_SPEED_FULL) ? 'f' : 'l', - info & ED_FA_MASK, - (info >> ED_EN_SHIFT) & ED_EN_MASK, - (info & ED_INT) ? "INT " : "", - (info & ED_ISO) ? "ISO " : "", - (info >> ED_MPS_SHIFT) & ED_MPS_MASK , - info, - (info & ED_SKIP) ? " S" : "", - (headp & ED_H) ? " H" : "", - (headp & ED_C) ? data1 : data0, - headp & ED_MASK,tailp); - size -= temp; - buf += temp; - - list_for_each(entry, &ed->td_list) { - u32 dbp, cbl; - - td = list_entry(entry, struct td, td_list); - info = hc32_to_cpup (ahcd, &td->hwINFO); - dbp = hc32_to_cpup (ahcd, &td->hwDBP); - cbl = hc32_to_cpup (ahcd, &td->hwCBL); - - temp = scnprintf(buf, size, - "\n\ttd/%p %s %d %s%scc=%x urb %p (%08x,%08x)", - td, - td_pidstring(info), - TD_BL_GET(cbl), - (info & TD_OWN) ? "" : "DONE ", - (cbl & TD_IE) ? "IE " : "", - TD_CC_GET (info), td->urb, info, cbl); - size -= temp; - buf += temp; - } - - temp = scnprintf(buf, size, "\n"); - size -= temp; - buf += temp; - - ed = ed->ed_next; - } - - return count - size; -} - -static ssize_t fill_async_buffer(struct debug_buffer *buf) -{ - struct usb_bus *bus; - struct usb_hcd *hcd; - struct admhcd *ahcd; - size_t temp; - unsigned long flags; - - bus = dev_get_drvdata(buf->dev); - hcd = bus_to_hcd(bus); - ahcd = hcd_to_admhcd(hcd); - - spin_lock_irqsave(&ahcd->lock, flags); - temp = show_list(ahcd, buf->page, PAGE_SIZE, ahcd->ed_head); - spin_unlock_irqrestore(&ahcd->lock, flags); - - return temp; -} - - -#define DBG_SCHED_LIMIT 64 - -static ssize_t fill_periodic_buffer(struct debug_buffer *buf) -{ - struct usb_bus *bus; - struct usb_hcd *hcd; - struct admhcd *ahcd; - struct ed **seen, *ed; - unsigned long flags; - unsigned temp, size, seen_count; - char *next; - unsigned i; - - if (!(seen = kmalloc(DBG_SCHED_LIMIT * sizeof *seen, GFP_ATOMIC))) - return 0; - seen_count = 0; - - bus = dev_get_drvdata(buf->dev); - hcd = bus_to_hcd(bus); - ahcd = hcd_to_admhcd(hcd); - next = buf->page; - size = PAGE_SIZE; - - temp = scnprintf(next, size, "size = %d\n", NUM_INTS); - size -= temp; - next += temp; - - /* dump a snapshot of the periodic schedule (and load) */ - spin_lock_irqsave(&ahcd->lock, flags); - for (i = 0; i < NUM_INTS; i++) { - if (!(ed = ahcd->periodic [i])) - continue; - - temp = scnprintf(next, size, "%2d [%3d]:", i, ahcd->load [i]); - size -= temp; - next += temp; - - do { - temp = scnprintf(next, size, " ed%d/%p", - ed->interval, ed); - size -= temp; - next += temp; - for (temp = 0; temp < seen_count; temp++) { - if (seen [temp] == ed) - break; - } - - /* show more info the first time around */ - if (temp == seen_count) { - u32 info = hc32_to_cpu (ahcd, ed->hwINFO); - struct list_head *entry; - unsigned qlen = 0; - - /* qlen measured here in TDs, not urbs */ - list_for_each (entry, &ed->td_list) - qlen++; - temp = scnprintf(next, size, - " (%cs dev%d ep%d%s qlen %u" - " max %d %08x%s%s)", - (info & ED_SPEED_FULL) ? 'f' : 'l', - ED_FA_GET(info), - ED_EN_GET(info), - (info & ED_ISO) ? "iso" : "int", - qlen, - ED_MPS_GET(info), - info, - (info & ED_SKIP) ? " K" : "", - (ed->hwHeadP & - cpu_to_hc32(ahcd, ED_H)) ? - " H" : ""); - size -= temp; - next += temp; - - if (seen_count < DBG_SCHED_LIMIT) - seen [seen_count++] = ed; - - ed = ed->ed_next; - - } else { - /* we've seen it and what's after */ - temp = 0; - ed = NULL; - } - - } while (ed); - - temp = scnprintf(next, size, "\n"); - size -= temp; - next += temp; - } - spin_unlock_irqrestore(&ahcd->lock, flags); - kfree (seen); - - return PAGE_SIZE - size; -} - - -#undef DBG_SCHED_LIMIT - -static ssize_t fill_registers_buffer(struct debug_buffer *buf) -{ - struct usb_bus *bus; - struct usb_hcd *hcd; - struct admhcd *ahcd; - struct admhcd_regs __iomem *regs; - unsigned long flags; - unsigned temp, size; - char *next; - u32 rdata; - - bus = dev_get_drvdata(buf->dev); - hcd = bus_to_hcd(bus); - ahcd = hcd_to_admhcd(hcd); - regs = ahcd->regs; - next = buf->page; - size = PAGE_SIZE; - - spin_lock_irqsave(&ahcd->lock, flags); - - /* dump driver info, then registers in spec order */ - - admhc_dbg_sw(ahcd, &next, &size, - "bus %s, device %s\n" - "%s\n" - "%s version " DRIVER_VERSION "\n", - hcd->self.controller->bus->name, - hcd->self.controller->bus_id, - hcd->product_desc, - hcd_name); - - if (bus->controller->power.power_state.event) { - size -= scnprintf(next, size, - "SUSPENDED (no register access)\n"); - goto done; - } - - admhc_dump_status(ahcd, &next, &size); - - /* other registers mostly affect frame timings */ - rdata = admhc_readl(ahcd, ®s->fminterval); - temp = scnprintf(next, size, - "fmintvl 0x%08x %sFSLDP=0x%04x FI=0x%04x\n", - rdata, (rdata & ADMHC_SFI_FIT) ? "FIT " : "", - (rdata >> ADMHC_SFI_FSLDP_SHIFT) & ADMHC_SFI_FSLDP_MASK, - rdata & ADMHC_SFI_FI_MASK); - size -= temp; - next += temp; - - rdata = admhc_readl(ahcd, ®s->fmnumber); - temp = scnprintf(next, size, "fmnumber 0x%08x %sFR=0x%04x FN=%04x\n", - rdata, (rdata & ADMHC_SFN_FRT) ? "FRT " : "", - (rdata >> ADMHC_SFN_FR_SHIFT) & ADMHC_SFN_FR_MASK, - rdata & ADMHC_SFN_FN_MASK); - size -= temp; - next += temp; - - /* TODO: use predefined bitmask */ - rdata = admhc_readl(ahcd, ®s->lsthresh); - temp = scnprintf(next, size, "lsthresh 0x%04x\n", - rdata & 0x3fff); - size -= temp; - next += temp; - - temp = scnprintf(next, size, "hub poll timer: %s\n", - admhcd_to_hcd(ahcd)->poll_rh ? "ON" : "OFF"); - size -= temp; - next += temp; - - /* roothub */ - admhc_dump_roothub(ahcd, 1, &next, &size); - -done: - spin_unlock_irqrestore(&ahcd->lock, flags); - return PAGE_SIZE - size; -} - - -static struct debug_buffer *alloc_buffer(struct device *dev, - ssize_t (*fill_func)(struct debug_buffer *)) -{ - struct debug_buffer *buf; - - buf = kzalloc(sizeof(struct debug_buffer), GFP_KERNEL); - - if (buf) { - buf->dev = dev; - buf->fill_func = fill_func; - mutex_init(&buf->mutex); - } - - return buf; -} - -static int fill_buffer(struct debug_buffer *buf) -{ - int ret = 0; - - if (!buf->page) - buf->page = (char *)get_zeroed_page(GFP_KERNEL); - - if (!buf->page) { - 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->page, buf->count); - -out: - return ret; -} - -static int debug_close(struct inode *inode, struct file *file) -{ - struct debug_buffer *buf = file->private_data; - - if (buf) { - if (buf->page) - free_page((unsigned long)buf->page); - 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_periodic_open(struct inode *inode, struct file *file) -{ - file->private_data = alloc_buffer(inode->i_private, - fill_periodic_buffer); - - return file->private_data ? 0 : -ENOMEM; -} - -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 inline void create_debug_files(struct admhcd *ahcd) -{ - struct usb_bus *bus = &admhcd_to_hcd(ahcd)->self; - struct device *dev = bus->dev; - - ahcd->debug_dir = debugfs_create_dir(bus->bus_name, admhc_debug_root); - if (!ahcd->debug_dir) - goto dir_error; - - ahcd->debug_async = debugfs_create_file("async", S_IRUGO, - ahcd->debug_dir, dev, - &debug_async_fops); - if (!ahcd->debug_async) - goto async_error; - - ahcd->debug_periodic = debugfs_create_file("periodic", S_IRUGO, - ahcd->debug_dir, dev, - &debug_periodic_fops); - if (!ahcd->debug_periodic) - goto periodic_error; - - ahcd->debug_registers = debugfs_create_file("registers", S_IRUGO, - ahcd->debug_dir, dev, - &debug_registers_fops); - if (!ahcd->debug_registers) - goto registers_error; - - admhc_dbg(ahcd, "created debug files\n"); - return; - -registers_error: - debugfs_remove(ahcd->debug_periodic); -periodic_error: - debugfs_remove(ahcd->debug_async); -async_error: - debugfs_remove(ahcd->debug_dir); -dir_error: - ahcd->debug_periodic = NULL; - ahcd->debug_async = NULL; - ahcd->debug_dir = NULL; -} - -static inline void remove_debug_files(struct admhcd *ahcd) -{ - debugfs_remove(ahcd->debug_registers); - debugfs_remove(ahcd->debug_periodic); - debugfs_remove(ahcd->debug_async); - debugfs_remove(ahcd->debug_dir); -} - -#endif - -/*-------------------------------------------------------------------------*/ |