X-Git-Url: https://git.rohieb.name/openwrt.git/blobdiff_plain/b4f5ad450602411b30e6d9849ce0406a93ffb597..d60ce1b40f304758df396ea08f5eae1a9a43d8b0:/target/linux/adm5120/files/drivers/usb/host/adm5120-dbg.c diff --git a/target/linux/adm5120/files/drivers/usb/host/adm5120-dbg.c b/target/linux/adm5120/files/drivers/usb/host/adm5120-dbg.c index 5b51ea4ab..34ee9414d 100644 --- a/target/linux/adm5120/files/drivers/usb/host/adm5120-dbg.c +++ b/target/linux/adm5120/files/drivers/usb/host/adm5120-dbg.c @@ -1,13 +1,16 @@ /* * ADM5120 HCD (Host Controller Driver) for USB * - * Copyright (C) 2007 Gabor Juhos + * Copyright (C) 2007-2008 Gabor Juhos * * This file was derived from: drivers/usb/host/ohci-dbg.c * (C) Copyright 1999 Roman Weissgaerber * (C) Copyright 2000-2002 David Brownell * - * This file is licenced under the GPL. + * 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. + * */ /*-------------------------------------------------------------------------*/ @@ -79,7 +82,7 @@ static inline char *td_togglestring(u32 info) * small: 0) header + data packets 1) just header */ static void __attribute__((unused)) -urb_print(struct admhcd *ahcd, struct urb *urb, char *str, int small) +urb_print(struct admhcd *ahcd, struct urb *urb, char *str, int small, int status) { unsigned int pipe = urb->pipe; @@ -89,20 +92,20 @@ urb_print(struct admhcd *ahcd, struct urb *urb, char *str, int small) } #ifndef ADMHC_VERBOSE_DEBUG - if (urb->status != 0) + 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", + usb_pipedevice(pipe), + usb_pipeendpoint(pipe), + usb_pipeout(pipe) ? "out" : "in", pipestring(pipe), urb->transfer_flags, urb->actual_length, urb->transfer_buffer_length, - urb->status); + status); #ifdef ADMHC_VERBOSE_DEBUG if (!small) { @@ -111,18 +114,18 @@ urb_print(struct admhcd *ahcd, struct urb *urb, char *str, int small) if (usb_pipecontrol(pipe)) { admhc_dbg(ahcd, "setup(8):"); for (i = 0; i < 8 ; i++) - printk (" %02x", ((__u8 *) urb->setup_packet) [i]); - printk ("\n"); + printk(KERN_INFO" %02x", ((__u8 *)urb->setup_packet)[i]); + printk(KERN_INFO "\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; + 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? "...": "", urb->status); + printk(KERN_INFO " %02x", ((__u8 *)urb->transfer_buffer)[i]); + printk(KERN_INFO "%s stat:%d\n", i < len ? "..." : "", status); } } #endif /* ADMHC_VERBOSE_DEBUG */ @@ -130,12 +133,12 @@ urb_print(struct admhcd *ahcd, struct urb *urb, char *str, int small) #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 ); \ + 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); @@ -167,7 +170,7 @@ static void maybe_print_eds(struct admhcd *ahcd, char *label, u32 value, admhc_dbg_sw(ahcd, next, size, "%s %08x\n", label, value); } -static char *buss2string (int state) +static char *buss2string(int state) { switch (state) { case ADMHC_BUSS_RESET: @@ -217,7 +220,7 @@ admhc_dump_status(struct admhcd *ahcd, char **next, unsigned *size) admhc_readl(ahcd, ®s->hosthead), next, size); } -#define dbg_port_sw(hc,num,value,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", \ @@ -283,7 +286,7 @@ static void admhc_dump(struct admhcd *ahcd, int verbose) /* dumps some of the state we know about */ admhc_dump_status(ahcd, NULL, NULL); - admhc_dbg(ahcd,"current frame #%04x\n", + admhc_dbg(ahcd, "current frame #%04x\n", admhc_frame_no(ahcd)); admhc_dump_roothub(ahcd, verbose, NULL, NULL); @@ -345,7 +348,7 @@ admhc_dump_ed(const struct admhcd *ahcd, const char *label, 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), + hc32_to_cpup(ahcd, &ed->hwTailP), (tmp & ED_C) ? data1 : data0, (tmp & ED_H) ? " HALT" : "", verbose ? " td list follows" : " (not listing)"); @@ -359,7 +362,7 @@ admhc_dump_ed(const struct admhcd *ahcd, const char *label, list_for_each(tmp, &ed->td_list) { struct td *td; td = list_entry(tmp, struct td, td_list); - admhc_dump_td (ahcd, " ->", td); + admhc_dump_td(ahcd, " ->", td); } } } @@ -367,7 +370,7 @@ admhc_dump_ed(const struct admhcd *ahcd, const char *label, #else /* ifdef DEBUG */ static inline void urb_print(struct admhcd *ahcd, struct urb * urb, char * str, - int small) {} + int small, int status) {} 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, @@ -387,10 +390,46 @@ 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, size = count; + unsigned temp; + unsigned size = count; if (!ed) return 0; @@ -408,7 +447,7 @@ show_list(struct admhcd *ahcd, char *buf, size_t count, struct ed *ed) " h:%08x t:%08x", ed, ed_statestring(ed->state), - ed_typestring (ed->type), + ed_typestring(ed->type), (info & ED_SPEED_FULL) ? 'f' : 'l', info & ED_FA_MASK, (info >> ED_EN_SHIFT) & ED_EN_MASK, @@ -419,7 +458,7 @@ show_list(struct admhcd *ahcd, char *buf, size_t count, struct ed *ed) (info & ED_SKIP) ? " S" : "", (headp & ED_H) ? " H" : "", (headp & ED_C) ? data1 : data0, - headp & ED_MASK,tailp); + headp & ED_MASK, tailp); size -= temp; buf += temp; @@ -427,9 +466,9 @@ show_list(struct admhcd *ahcd, char *buf, size_t count, struct ed *ed) 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); + 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)", @@ -438,7 +477,7 @@ show_list(struct admhcd *ahcd, char *buf, size_t count, struct ed *ed) TD_BL_GET(cbl), (info & TD_OWN) ? "" : "DONE ", (cbl & TD_IE) ? "IE " : "", - TD_CC_GET (info), td->urb, info, cbl); + TD_CC_GET(info), td->urb, info, cbl); size -= temp; buf += temp; } @@ -449,11 +488,11 @@ show_list(struct admhcd *ahcd, char *buf, size_t count, struct ed *ed) ed = ed->ed_next; } + return count - size; } -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; @@ -461,24 +500,21 @@ show_async(struct class_device *class_dev, char *buf) size_t temp; unsigned long flags; - bus = class_get_devdata(class_dev); + bus = dev_get_drvdata(buf->dev); hcd = bus_to_hcd(bus); ahcd = hcd_to_admhcd(hcd); - /* display control and bulk lists together, for simplicity */ spin_lock_irqsave(&ahcd->lock, flags); - temp = show_list(ahcd, buf, PAGE_SIZE, ahcd->ed_head); + temp = show_list(ahcd, buf->page, PAGE_SIZE, ahcd->ed_head); spin_unlock_irqrestore(&ahcd->lock, flags); return temp; } -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) +static ssize_t fill_periodic_buffer(struct debug_buffer *buf) { struct usb_bus *bus; struct usb_hcd *hcd; @@ -489,14 +525,15 @@ show_periodic(struct class_device *class_dev, char *buf) char *next; unsigned i; - if (!(seen = kmalloc(DBG_SCHED_LIMIT * sizeof *seen, GFP_ATOMIC))) + seen = kmalloc(DBG_SCHED_LIMIT * sizeof(*seen), GFP_ATOMIC); + if (!seen) return 0; seen_count = 0; - bus = class_get_devdata(class_dev); + bus = dev_get_drvdata(buf->dev); hcd = bus_to_hcd(bus); ahcd = hcd_to_admhcd(hcd); - next = buf; + next = buf->page; size = PAGE_SIZE; temp = scnprintf(next, size, "size = %d\n", NUM_INTS); @@ -506,10 +543,11 @@ show_periodic(struct class_device *class_dev, char *buf) /* 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])) + ed = ahcd->periodic[i]; + if (!ed) continue; - temp = scnprintf(next, size, "%2d [%3d]:", i, ahcd->load [i]); + temp = scnprintf(next, size, "%2d [%3d]:", i, ahcd->load[i]); size -= temp; next += temp; @@ -519,18 +557,18 @@ show_periodic(struct class_device *class_dev, char *buf) size -= temp; next += temp; for (temp = 0; temp < seen_count; temp++) { - if (seen [temp] == ed) + if (seen[temp] == ed) break; } /* show more info the first time around */ if (temp == seen_count) { - u32 info = hc32_to_cpu (ahcd, ed->hwINFO); + 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) + list_for_each(entry, &ed->td_list) qlen++; temp = scnprintf(next, size, " (%cs dev%d ep%d%s qlen %u" @@ -550,7 +588,7 @@ show_periodic(struct class_device *class_dev, char *buf) next += temp; if (seen_count < DBG_SCHED_LIMIT) - seen [seen_count++] = ed; + seen[seen_count++] = ed; ed = ed->ed_next; @@ -567,17 +605,15 @@ show_periodic(struct class_device *class_dev, char *buf) next += temp; } spin_unlock_irqrestore(&ahcd->lock, flags); - kfree (seen); + 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) +static ssize_t fill_registers_buffer(struct debug_buffer *buf) { struct usb_bus *bus; struct usb_hcd *hcd; @@ -588,11 +624,11 @@ show_registers(struct class_device *class_dev, char *buf) char *next; u32 rdata; - bus = class_get_devdata(class_dev); + bus = dev_get_drvdata(buf->dev); hcd = bus_to_hcd(bus); ahcd = hcd_to_admhcd(hcd); regs = ahcd->regs; - next = buf; + next = buf->page; size = PAGE_SIZE; spin_lock_irqsave(&ahcd->lock, flags); @@ -604,7 +640,7 @@ show_registers(struct class_device *class_dev, char *buf) "%s\n" "%s version " DRIVER_VERSION "\n", hcd->self.controller->bus->name, - hcd->self.controller->bus_id, + dev_name(hcd->self.controller), hcd->product_desc, hcd_name); @@ -653,27 +689,154 @@ done: spin_unlock_irqrestore(&ahcd->lock, flags); return PAGE_SIZE - size; } -static CLASS_DEVICE_ATTR(registers, S_IRUGO, show_registers, NULL); -static inline void create_debug_files (struct admhcd *ahcd) +static struct debug_buffer *alloc_buffer(struct device *dev, + ssize_t (*fill_func)(struct debug_buffer *)) { - struct class_device *cldev = admhcd_to_hcd(ahcd)->self.class_dev; - int retval; + struct debug_buffer *buf; - retval = class_device_create_file(cldev, &class_device_attr_async); - retval = class_device_create_file(cldev, &class_device_attr_periodic); - retval = class_device_create_file(cldev, &class_device_attr_registers); - admhc_dbg(ahcd, "created debug files\n"); + 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 inline void remove_debug_files (struct admhcd *ahcd) +static int fill_buffer(struct debug_buffer *buf) { - struct class_device *cldev = admhcd_to_hcd(ahcd)->self.class_dev; + 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; +} - 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); +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