519 lines
12 KiB
C
519 lines
12 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (c) 2009 by Martin Fuzzey
|
|
*/
|
|
|
|
/* this file is part of imx21-hcd.c */
|
|
|
|
#ifdef CONFIG_DYNAMIC_DEBUG
|
|
#define DEBUG
|
|
#endif
|
|
|
|
#ifndef DEBUG
|
|
|
|
static inline void create_debug_files(struct imx21 *imx21) { }
|
|
static inline void remove_debug_files(struct imx21 *imx21) { }
|
|
static inline void debug_urb_submitted(struct imx21 *imx21, struct urb *urb) {}
|
|
static inline void debug_urb_completed(struct imx21 *imx21, struct urb *urb,
|
|
int status) {}
|
|
static inline void debug_urb_unlinked(struct imx21 *imx21, struct urb *urb) {}
|
|
static inline void debug_urb_queued_for_etd(struct imx21 *imx21,
|
|
struct urb *urb) {}
|
|
static inline void debug_urb_queued_for_dmem(struct imx21 *imx21,
|
|
struct urb *urb) {}
|
|
static inline void debug_etd_allocated(struct imx21 *imx21) {}
|
|
static inline void debug_etd_freed(struct imx21 *imx21) {}
|
|
static inline void debug_dmem_allocated(struct imx21 *imx21, int size) {}
|
|
static inline void debug_dmem_freed(struct imx21 *imx21, int size) {}
|
|
static inline void debug_isoc_submitted(struct imx21 *imx21,
|
|
int frame, struct td *td) {}
|
|
static inline void debug_isoc_completed(struct imx21 *imx21,
|
|
int frame, struct td *td, int cc, int len) {}
|
|
|
|
#else
|
|
|
|
#include <linux/debugfs.h>
|
|
#include <linux/seq_file.h>
|
|
|
|
static const char *dir_labels[] = {
|
|
"TD 0",
|
|
"OUT",
|
|
"IN",
|
|
"TD 1"
|
|
};
|
|
|
|
static const char *speed_labels[] = {
|
|
"Full",
|
|
"Low"
|
|
};
|
|
|
|
static const char *format_labels[] = {
|
|
"Control",
|
|
"ISO",
|
|
"Bulk",
|
|
"Interrupt"
|
|
};
|
|
|
|
static inline struct debug_stats *stats_for_urb(struct imx21 *imx21,
|
|
struct urb *urb)
|
|
{
|
|
return usb_pipeisoc(urb->pipe) ?
|
|
&imx21->isoc_stats : &imx21->nonisoc_stats;
|
|
}
|
|
|
|
static void debug_urb_submitted(struct imx21 *imx21, struct urb *urb)
|
|
{
|
|
stats_for_urb(imx21, urb)->submitted++;
|
|
}
|
|
|
|
static void debug_urb_completed(struct imx21 *imx21, struct urb *urb, int st)
|
|
{
|
|
if (st)
|
|
stats_for_urb(imx21, urb)->completed_failed++;
|
|
else
|
|
stats_for_urb(imx21, urb)->completed_ok++;
|
|
}
|
|
|
|
static void debug_urb_unlinked(struct imx21 *imx21, struct urb *urb)
|
|
{
|
|
stats_for_urb(imx21, urb)->unlinked++;
|
|
}
|
|
|
|
static void debug_urb_queued_for_etd(struct imx21 *imx21, struct urb *urb)
|
|
{
|
|
stats_for_urb(imx21, urb)->queue_etd++;
|
|
}
|
|
|
|
static void debug_urb_queued_for_dmem(struct imx21 *imx21, struct urb *urb)
|
|
{
|
|
stats_for_urb(imx21, urb)->queue_dmem++;
|
|
}
|
|
|
|
static inline void debug_etd_allocated(struct imx21 *imx21)
|
|
{
|
|
imx21->etd_usage.maximum = max(
|
|
++(imx21->etd_usage.value),
|
|
imx21->etd_usage.maximum);
|
|
}
|
|
|
|
static inline void debug_etd_freed(struct imx21 *imx21)
|
|
{
|
|
imx21->etd_usage.value--;
|
|
}
|
|
|
|
static inline void debug_dmem_allocated(struct imx21 *imx21, int size)
|
|
{
|
|
imx21->dmem_usage.value += size;
|
|
imx21->dmem_usage.maximum = max(
|
|
imx21->dmem_usage.value,
|
|
imx21->dmem_usage.maximum);
|
|
}
|
|
|
|
static inline void debug_dmem_freed(struct imx21 *imx21, int size)
|
|
{
|
|
imx21->dmem_usage.value -= size;
|
|
}
|
|
|
|
|
|
static void debug_isoc_submitted(struct imx21 *imx21,
|
|
int frame, struct td *td)
|
|
{
|
|
struct debug_isoc_trace *trace = &imx21->isoc_trace[
|
|
imx21->isoc_trace_index++];
|
|
|
|
imx21->isoc_trace_index %= ARRAY_SIZE(imx21->isoc_trace);
|
|
trace->schedule_frame = td->frame;
|
|
trace->submit_frame = frame;
|
|
trace->request_len = td->len;
|
|
trace->td = td;
|
|
}
|
|
|
|
static inline void debug_isoc_completed(struct imx21 *imx21,
|
|
int frame, struct td *td, int cc, int len)
|
|
{
|
|
struct debug_isoc_trace *trace, *trace_failed;
|
|
int i;
|
|
int found = 0;
|
|
|
|
trace = imx21->isoc_trace;
|
|
for (i = 0; i < ARRAY_SIZE(imx21->isoc_trace); i++, trace++) {
|
|
if (trace->td == td) {
|
|
trace->done_frame = frame;
|
|
trace->done_len = len;
|
|
trace->cc = cc;
|
|
trace->td = NULL;
|
|
found = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (found && cc) {
|
|
trace_failed = &imx21->isoc_trace_failed[
|
|
imx21->isoc_trace_index_failed++];
|
|
|
|
imx21->isoc_trace_index_failed %= ARRAY_SIZE(
|
|
imx21->isoc_trace_failed);
|
|
*trace_failed = *trace;
|
|
}
|
|
}
|
|
|
|
|
|
static char *format_ep(struct usb_host_endpoint *ep, char *buf, int bufsize)
|
|
{
|
|
if (ep)
|
|
snprintf(buf, bufsize, "ep_%02x (type:%02X kaddr:%p)",
|
|
ep->desc.bEndpointAddress,
|
|
usb_endpoint_type(&ep->desc),
|
|
ep);
|
|
else
|
|
snprintf(buf, bufsize, "none");
|
|
return buf;
|
|
}
|
|
|
|
static char *format_etd_dword0(u32 value, char *buf, int bufsize)
|
|
{
|
|
snprintf(buf, bufsize,
|
|
"addr=%d ep=%d dir=%s speed=%s format=%s halted=%d",
|
|
value & 0x7F,
|
|
(value >> DW0_ENDPNT) & 0x0F,
|
|
dir_labels[(value >> DW0_DIRECT) & 0x03],
|
|
speed_labels[(value >> DW0_SPEED) & 0x01],
|
|
format_labels[(value >> DW0_FORMAT) & 0x03],
|
|
(value >> DW0_HALTED) & 0x01);
|
|
return buf;
|
|
}
|
|
|
|
static int debug_status_show(struct seq_file *s, void *v)
|
|
{
|
|
struct imx21 *imx21 = s->private;
|
|
int etds_allocated = 0;
|
|
int etds_sw_busy = 0;
|
|
int etds_hw_busy = 0;
|
|
int dmem_blocks = 0;
|
|
int queued_for_etd = 0;
|
|
int queued_for_dmem = 0;
|
|
unsigned int dmem_bytes = 0;
|
|
int i;
|
|
struct etd_priv *etd;
|
|
u32 etd_enable_mask;
|
|
unsigned long flags;
|
|
struct imx21_dmem_area *dmem;
|
|
struct ep_priv *ep_priv;
|
|
|
|
spin_lock_irqsave(&imx21->lock, flags);
|
|
|
|
etd_enable_mask = readl(imx21->regs + USBH_ETDENSET);
|
|
for (i = 0, etd = imx21->etd; i < USB_NUM_ETD; i++, etd++) {
|
|
if (etd->alloc)
|
|
etds_allocated++;
|
|
if (etd->urb)
|
|
etds_sw_busy++;
|
|
if (etd_enable_mask & (1<<i))
|
|
etds_hw_busy++;
|
|
}
|
|
|
|
list_for_each_entry(dmem, &imx21->dmem_list, list) {
|
|
dmem_bytes += dmem->size;
|
|
dmem_blocks++;
|
|
}
|
|
|
|
list_for_each_entry(ep_priv, &imx21->queue_for_etd, queue)
|
|
queued_for_etd++;
|
|
|
|
list_for_each_entry(etd, &imx21->queue_for_dmem, queue)
|
|
queued_for_dmem++;
|
|
|
|
spin_unlock_irqrestore(&imx21->lock, flags);
|
|
|
|
seq_printf(s,
|
|
"Frame: %d\n"
|
|
"ETDs allocated: %d/%d (max=%d)\n"
|
|
"ETDs in use sw: %d\n"
|
|
"ETDs in use hw: %d\n"
|
|
"DMEM allocated: %d/%d (max=%d)\n"
|
|
"DMEM blocks: %d\n"
|
|
"Queued waiting for ETD: %d\n"
|
|
"Queued waiting for DMEM: %d\n",
|
|
readl(imx21->regs + USBH_FRMNUB) & 0xFFFF,
|
|
etds_allocated, USB_NUM_ETD, imx21->etd_usage.maximum,
|
|
etds_sw_busy,
|
|
etds_hw_busy,
|
|
dmem_bytes, DMEM_SIZE, imx21->dmem_usage.maximum,
|
|
dmem_blocks,
|
|
queued_for_etd,
|
|
queued_for_dmem);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int debug_dmem_show(struct seq_file *s, void *v)
|
|
{
|
|
struct imx21 *imx21 = s->private;
|
|
struct imx21_dmem_area *dmem;
|
|
unsigned long flags;
|
|
char ep_text[40];
|
|
|
|
spin_lock_irqsave(&imx21->lock, flags);
|
|
|
|
list_for_each_entry(dmem, &imx21->dmem_list, list)
|
|
seq_printf(s,
|
|
"%04X: size=0x%X "
|
|
"ep=%s\n",
|
|
dmem->offset, dmem->size,
|
|
format_ep(dmem->ep, ep_text, sizeof(ep_text)));
|
|
|
|
spin_unlock_irqrestore(&imx21->lock, flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int debug_etd_show(struct seq_file *s, void *v)
|
|
{
|
|
struct imx21 *imx21 = s->private;
|
|
struct etd_priv *etd;
|
|
char buf[60];
|
|
u32 dword;
|
|
int i, j;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&imx21->lock, flags);
|
|
|
|
for (i = 0, etd = imx21->etd; i < USB_NUM_ETD; i++, etd++) {
|
|
int state = -1;
|
|
struct urb_priv *urb_priv;
|
|
if (etd->urb) {
|
|
urb_priv = etd->urb->hcpriv;
|
|
if (urb_priv)
|
|
state = urb_priv->state;
|
|
}
|
|
|
|
seq_printf(s,
|
|
"etd_num: %d\n"
|
|
"ep: %s\n"
|
|
"alloc: %d\n"
|
|
"len: %d\n"
|
|
"busy sw: %d\n"
|
|
"busy hw: %d\n"
|
|
"urb state: %d\n"
|
|
"current urb: %p\n",
|
|
|
|
i,
|
|
format_ep(etd->ep, buf, sizeof(buf)),
|
|
etd->alloc,
|
|
etd->len,
|
|
etd->urb != NULL,
|
|
(readl(imx21->regs + USBH_ETDENSET) & (1 << i)) > 0,
|
|
state,
|
|
etd->urb);
|
|
|
|
for (j = 0; j < 4; j++) {
|
|
dword = etd_readl(imx21, i, j);
|
|
switch (j) {
|
|
case 0:
|
|
format_etd_dword0(dword, buf, sizeof(buf));
|
|
break;
|
|
case 2:
|
|
snprintf(buf, sizeof(buf),
|
|
"cc=0X%02X", dword >> DW2_COMPCODE);
|
|
break;
|
|
default:
|
|
*buf = 0;
|
|
break;
|
|
}
|
|
seq_printf(s,
|
|
"dword %d: submitted=%08X cur=%08X [%s]\n",
|
|
j,
|
|
etd->submitted_dwords[j],
|
|
dword,
|
|
buf);
|
|
}
|
|
seq_printf(s, "\n");
|
|
}
|
|
|
|
spin_unlock_irqrestore(&imx21->lock, flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void debug_statistics_show_one(struct seq_file *s,
|
|
const char *name, struct debug_stats *stats)
|
|
{
|
|
seq_printf(s, "%s:\n"
|
|
"submitted URBs: %lu\n"
|
|
"completed OK: %lu\n"
|
|
"completed failed: %lu\n"
|
|
"unlinked: %lu\n"
|
|
"queued for ETD: %lu\n"
|
|
"queued for DMEM: %lu\n\n",
|
|
name,
|
|
stats->submitted,
|
|
stats->completed_ok,
|
|
stats->completed_failed,
|
|
stats->unlinked,
|
|
stats->queue_etd,
|
|
stats->queue_dmem);
|
|
}
|
|
|
|
static int debug_statistics_show(struct seq_file *s, void *v)
|
|
{
|
|
struct imx21 *imx21 = s->private;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&imx21->lock, flags);
|
|
|
|
debug_statistics_show_one(s, "nonisoc", &imx21->nonisoc_stats);
|
|
debug_statistics_show_one(s, "isoc", &imx21->isoc_stats);
|
|
seq_printf(s, "unblock kludge triggers: %lu\n", imx21->debug_unblocks);
|
|
spin_unlock_irqrestore(&imx21->lock, flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void debug_isoc_show_one(struct seq_file *s,
|
|
const char *name, int index, struct debug_isoc_trace *trace)
|
|
{
|
|
seq_printf(s, "%s %d:\n"
|
|
"cc=0X%02X\n"
|
|
"scheduled frame %d (%d)\n"
|
|
"submitted frame %d (%d)\n"
|
|
"completed frame %d (%d)\n"
|
|
"requested length=%d\n"
|
|
"completed length=%d\n\n",
|
|
name, index,
|
|
trace->cc,
|
|
trace->schedule_frame, trace->schedule_frame & 0xFFFF,
|
|
trace->submit_frame, trace->submit_frame & 0xFFFF,
|
|
trace->done_frame, trace->done_frame & 0xFFFF,
|
|
trace->request_len,
|
|
trace->done_len);
|
|
}
|
|
|
|
static int debug_isoc_show(struct seq_file *s, void *v)
|
|
{
|
|
struct imx21 *imx21 = s->private;
|
|
struct debug_isoc_trace *trace;
|
|
unsigned long flags;
|
|
int i;
|
|
|
|
spin_lock_irqsave(&imx21->lock, flags);
|
|
|
|
trace = imx21->isoc_trace_failed;
|
|
for (i = 0; i < ARRAY_SIZE(imx21->isoc_trace_failed); i++, trace++)
|
|
debug_isoc_show_one(s, "isoc failed", i, trace);
|
|
|
|
trace = imx21->isoc_trace;
|
|
for (i = 0; i < ARRAY_SIZE(imx21->isoc_trace); i++, trace++)
|
|
debug_isoc_show_one(s, "isoc", i, trace);
|
|
|
|
spin_unlock_irqrestore(&imx21->lock, flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int debug_status_open(struct inode *inode, struct file *file)
|
|
{
|
|
return single_open(file, debug_status_show, inode->i_private);
|
|
}
|
|
|
|
static int debug_dmem_open(struct inode *inode, struct file *file)
|
|
{
|
|
return single_open(file, debug_dmem_show, inode->i_private);
|
|
}
|
|
|
|
static int debug_etd_open(struct inode *inode, struct file *file)
|
|
{
|
|
return single_open(file, debug_etd_show, inode->i_private);
|
|
}
|
|
|
|
static int debug_statistics_open(struct inode *inode, struct file *file)
|
|
{
|
|
return single_open(file, debug_statistics_show, inode->i_private);
|
|
}
|
|
|
|
static int debug_isoc_open(struct inode *inode, struct file *file)
|
|
{
|
|
return single_open(file, debug_isoc_show, inode->i_private);
|
|
}
|
|
|
|
static const struct file_operations debug_status_fops = {
|
|
.open = debug_status_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
};
|
|
|
|
static const struct file_operations debug_dmem_fops = {
|
|
.open = debug_dmem_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
};
|
|
|
|
static const struct file_operations debug_etd_fops = {
|
|
.open = debug_etd_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
};
|
|
|
|
static const struct file_operations debug_statistics_fops = {
|
|
.open = debug_statistics_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
};
|
|
|
|
static const struct file_operations debug_isoc_fops = {
|
|
.open = debug_isoc_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
};
|
|
|
|
static void create_debug_files(struct imx21 *imx21)
|
|
{
|
|
imx21->debug_root = debugfs_create_dir(dev_name(imx21->dev), NULL);
|
|
if (!imx21->debug_root)
|
|
goto failed_create_rootdir;
|
|
|
|
if (!debugfs_create_file("status", S_IRUGO,
|
|
imx21->debug_root, imx21, &debug_status_fops))
|
|
goto failed_create;
|
|
|
|
if (!debugfs_create_file("dmem", S_IRUGO,
|
|
imx21->debug_root, imx21, &debug_dmem_fops))
|
|
goto failed_create;
|
|
|
|
if (!debugfs_create_file("etd", S_IRUGO,
|
|
imx21->debug_root, imx21, &debug_etd_fops))
|
|
goto failed_create;
|
|
|
|
if (!debugfs_create_file("statistics", S_IRUGO,
|
|
imx21->debug_root, imx21, &debug_statistics_fops))
|
|
goto failed_create;
|
|
|
|
if (!debugfs_create_file("isoc", S_IRUGO,
|
|
imx21->debug_root, imx21, &debug_isoc_fops))
|
|
goto failed_create;
|
|
|
|
return;
|
|
|
|
failed_create:
|
|
debugfs_remove_recursive(imx21->debug_root);
|
|
|
|
failed_create_rootdir:
|
|
imx21->debug_root = NULL;
|
|
}
|
|
|
|
|
|
static void remove_debug_files(struct imx21 *imx21)
|
|
{
|
|
if (imx21->debug_root) {
|
|
debugfs_remove_recursive(imx21->debug_root);
|
|
imx21->debug_root = NULL;
|
|
}
|
|
}
|
|
|
|
#endif
|
|
|