* (C) Copyright 1999-2001 Johannes Erdfelt
*/
+#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/debugfs.h>
#include <linux/smp_lock.h>
#include "uhci-hcd.h"
-#define uhci_debug_operations (* (struct file_operations *) NULL)
-static struct dentry *uhci_debugfs_root;
-
-#ifdef DEBUG
+static struct dentry *uhci_debugfs_root = NULL;
/* Handle REALLY large printks so we don't overflow buffers */
-static void lprintk(char *buf)
+static inline void lprintk(char *buf)
{
char *p;
return out - buf;
}
-static int uhci_show_urbp(struct urb_priv *urbp, char *buf, int len, int space)
-{
- char *out = buf;
- struct uhci_td *td;
- int i, nactive, ninactive;
- char *ptype;
-
- if (len < 200)
- return 0;
-
- out += sprintf(out, "urb_priv [%p] ", urbp);
- out += sprintf(out, "urb [%p] ", urbp->urb);
- out += sprintf(out, "qh [%p] ", urbp->qh);
- out += sprintf(out, "Dev=%d ", usb_pipedevice(urbp->urb->pipe));
- out += sprintf(out, "EP=%x(%s) ", usb_pipeendpoint(urbp->urb->pipe),
- (usb_pipein(urbp->urb->pipe) ? "IN" : "OUT"));
-
- switch (usb_pipetype(urbp->urb->pipe)) {
- case PIPE_ISOCHRONOUS: ptype = "ISO"; break;
- case PIPE_INTERRUPT: ptype = "INT"; break;
- case PIPE_BULK: ptype = "BLK"; break;
- default:
- case PIPE_CONTROL: ptype = "CTL"; break;
- }
-
- out += sprintf(out, "%s%s", ptype, (urbp->fsbr ? " FSBR" : ""));
- out += sprintf(out, " Actlen=%d", urbp->urb->actual_length);
-
- if (urbp->urb->status != -EINPROGRESS)
- out += sprintf(out, " Status=%d", urbp->urb->status);
- out += sprintf(out, "\n");
-
- i = nactive = ninactive = 0;
- list_for_each_entry(td, &urbp->td_list, list) {
- if (urbp->qh->type != USB_ENDPOINT_XFER_ISOC &&
- (++i <= 10 || debug > 2)) {
- out += sprintf(out, "%*s%d: ", space + 2, "", i);
- out += uhci_show_td(td, out, len - (out - buf), 0);
- } else {
- if (td_status(td) & TD_CTRL_ACTIVE)
- ++nactive;
- else
- ++ninactive;
- }
- }
- if (nactive + ninactive > 0)
- out += sprintf(out, "%*s[skipped %d inactive and %d active "
- "TDs]\n",
- space, "", ninactive, nactive);
-
- return out - buf;
-}
-
static int uhci_show_qh(struct uhci_qh *qh, char *buf, int len, int space)
{
char *out = buf;
- int i, nurbs;
+ struct urb_priv *urbp;
+ struct list_head *head, *tmp;
+ struct uhci_td *td;
+ int i = 0, checked = 0, prevactive = 0;
__le32 element = qh_element(qh);
- char *qtype;
/* Try to make sure there's enough memory */
- if (len < 80 * 7)
+ if (len < 80 * 6)
return 0;
- switch (qh->type) {
- case USB_ENDPOINT_XFER_ISOC: qtype = "ISO"; break;
- case USB_ENDPOINT_XFER_INT: qtype = "INT"; break;
- case USB_ENDPOINT_XFER_BULK: qtype = "BLK"; break;
- case USB_ENDPOINT_XFER_CONTROL: qtype = "CTL"; break;
- default: qtype = "Skel" ; break;
- }
-
- out += sprintf(out, "%*s[%p] %s QH link (%08x) element (%08x)\n",
- space, "", qh, qtype,
- le32_to_cpu(qh->link), le32_to_cpu(element));
- if (qh->type == USB_ENDPOINT_XFER_ISOC)
- out += sprintf(out, "%*s period %d frame %x desc [%p]\n",
- space, "", qh->period, qh->iso_frame,
- qh->iso_packet_desc);
+ out += sprintf(out, "%*s[%p] link (%08x) element (%08x)\n", space, "",
+ qh, le32_to_cpu(qh->link), le32_to_cpu(element));
if (element & UHCI_PTR_QH)
out += sprintf(out, "%*s Element points to QH (bug?)\n", space, "");
if (!(element & ~(UHCI_PTR_QH | UHCI_PTR_DEPTH)))
out += sprintf(out, "%*s Element is NULL (bug?)\n", space, "");
- if (list_empty(&qh->queue)) {
- out += sprintf(out, "%*s queue is empty\n", space, "");
- } else {
- struct urb_priv *urbp = list_entry(qh->queue.next,
- struct urb_priv, node);
- struct uhci_td *td = list_entry(urbp->td_list.next,
- struct uhci_td, list);
-
- if (cpu_to_le32(td->dma_handle) != (element & ~UHCI_PTR_BITS))
- out += sprintf(out, "%*s Element != First TD\n",
- space, "");
- i = nurbs = 0;
- list_for_each_entry(urbp, &qh->queue, node) {
- if (++i <= 10)
- out += uhci_show_urbp(urbp, out,
- len - (out - buf), space + 2);
- else
- ++nurbs;
+ if (!qh->urbp) {
+ out += sprintf(out, "%*s urbp == NULL\n", space, "");
+ goto out;
+ }
+
+ urbp = qh->urbp;
+
+ head = &urbp->td_list;
+ tmp = head->next;
+
+ td = list_entry(tmp, struct uhci_td, list);
+
+ if (cpu_to_le32(td->dma_handle) != (element & ~UHCI_PTR_BITS))
+ out += sprintf(out, "%*s Element != First TD\n", space, "");
+
+ while (tmp != head) {
+ struct uhci_td *td = list_entry(tmp, struct uhci_td, list);
+
+ tmp = tmp->next;
+
+ out += sprintf(out, "%*s%d: ", space + 2, "", i++);
+ out += uhci_show_td(td, out, len - (out - buf), 0);
+
+ if (i > 10 && !checked && prevactive && tmp != head &&
+ debug <= 2) {
+ struct list_head *ntmp = tmp;
+ struct uhci_td *ntd = td;
+ int active = 1, ni = i;
+
+ checked = 1;
+
+ while (ntmp != head && ntmp->next != head && active) {
+ ntd = list_entry(ntmp, struct uhci_td, list);
+
+ ntmp = ntmp->next;
+
+ active = td_status(ntd) & TD_CTRL_ACTIVE;
+
+ ni++;
+ }
+
+ if (active && ni > i) {
+ out += sprintf(out, "%*s[skipped %d active TDs]\n", space, "", ni - i);
+ tmp = ntmp;
+ td = ntd;
+ i = ni;
+ }
}
- if (nurbs > 0)
- out += sprintf(out, "%*s Skipped %d URBs\n",
- space, "", nurbs);
+
+ prevactive = td_status(td) & TD_CTRL_ACTIVE;
}
- if (qh->udev) {
- out += sprintf(out, "%*s Dummy TD\n", space, "");
- out += uhci_show_td(qh->dummy_td, out, len - (out - buf), 0);
+ if (list_empty(&urbp->queue_list) || urbp->queued)
+ goto out;
+
+ out += sprintf(out, "%*sQueued QHs:\n", -space, "--");
+
+ head = &urbp->queue_list;
+ tmp = head->next;
+
+ while (tmp != head) {
+ struct urb_priv *nurbp = list_entry(tmp, struct urb_priv,
+ queue_list);
+ tmp = tmp->next;
+
+ out += uhci_show_qh(nurbp->qh, out, len - (out - buf), space);
}
+out:
return out - buf;
}
+#define show_frame_num() \
+ if (!shown) { \
+ shown = 1; \
+ out += sprintf(out, "- Frame %d\n", i); \
+ }
+
+#ifdef CONFIG_PROC_FS
static const char * const qh_names[] = {
- "skel_unlink_qh", "skel_iso_qh",
"skel_int128_qh", "skel_int64_qh",
"skel_int32_qh", "skel_int16_qh",
"skel_int8_qh", "skel_int4_qh",
"skel_bulk_qh", "skel_term_qh"
};
+#define show_qh_name() \
+ if (!shown) { \
+ shown = 1; \
+ out += sprintf(out, "- %s\n", qh_names[i]); \
+ }
+
static int uhci_show_sc(int port, unsigned short status, char *buf, int len)
{
char *out = buf;
default:
rh_state = "?"; break;
}
- out += sprintf(out, "Root-hub state: %s FSBR: %d\n",
- rh_state, uhci->fsbr_is_on);
+ out += sprintf(out, "Root-hub state: %s\n", rh_state);
return out - buf;
}
unsigned short portsc1, portsc2;
/* Try to make sure there's enough memory */
- if (len < 80 * 9)
+ if (len < 80 * 6)
return 0;
usbcmd = inw(io_addr + 0);
out += sprintf(out, " sof = %02x\n", sof);
out += uhci_show_sc(1, portsc1, out, len - (out - buf));
out += uhci_show_sc(2, portsc2, out, len - (out - buf));
- out += sprintf(out, "Most recent frame: %x (%d) "
- "Last ISO frame: %x (%d)\n",
- uhci->frame_number, uhci->frame_number & 1023,
- uhci->last_iso_frame, uhci->last_iso_frame & 1023);
+
+ return out - buf;
+}
+
+static int uhci_show_urbp(struct uhci_hcd *uhci, struct urb_priv *urbp, char *buf, int len)
+{
+ struct list_head *tmp;
+ char *out = buf;
+ int count = 0;
+
+ if (len < 200)
+ return 0;
+
+ out += sprintf(out, "urb_priv [%p] ", urbp);
+ out += sprintf(out, "urb [%p] ", urbp->urb);
+ out += sprintf(out, "qh [%p] ", urbp->qh);
+ out += sprintf(out, "Dev=%d ", usb_pipedevice(urbp->urb->pipe));
+ out += sprintf(out, "EP=%x(%s) ", usb_pipeendpoint(urbp->urb->pipe), (usb_pipein(urbp->urb->pipe) ? "IN" : "OUT"));
+
+ switch (usb_pipetype(urbp->urb->pipe)) {
+ case PIPE_ISOCHRONOUS: out += sprintf(out, "ISO "); break;
+ case PIPE_INTERRUPT: out += sprintf(out, "INT "); break;
+ case PIPE_BULK: out += sprintf(out, "BLK "); break;
+ case PIPE_CONTROL: out += sprintf(out, "CTL "); break;
+ }
+
+ out += sprintf(out, "%s", (urbp->fsbr ? "FSBR " : ""));
+ out += sprintf(out, "%s", (urbp->fsbr_timeout ? "FSBR_TO " : ""));
+
+ if (urbp->urb->status != -EINPROGRESS)
+ out += sprintf(out, "Status=%d ", urbp->urb->status);
+ //out += sprintf(out, "FSBRtime=%lx ",urbp->fsbrtime);
+
+ count = 0;
+ list_for_each(tmp, &urbp->td_list)
+ count++;
+ out += sprintf(out, "TDs=%d ",count);
+
+ if (urbp->queued)
+ out += sprintf(out, "queued\n");
+ else {
+ count = 0;
+ list_for_each(tmp, &urbp->queue_list)
+ count++;
+ out += sprintf(out, "queued URBs=%d\n", count);
+ }
+
+ return out - buf;
+}
+
+static int uhci_show_lists(struct uhci_hcd *uhci, char *buf, int len)
+{
+ char *out = buf;
+ struct list_head *head, *tmp;
+ int count;
+
+ out += sprintf(out, "Main list URBs:");
+ if (list_empty(&uhci->urb_list))
+ out += sprintf(out, " Empty\n");
+ else {
+ out += sprintf(out, "\n");
+ count = 0;
+ head = &uhci->urb_list;
+ tmp = head->next;
+ while (tmp != head) {
+ struct urb_priv *urbp = list_entry(tmp, struct urb_priv, urb_list);
+
+ out += sprintf(out, " %d: ", ++count);
+ out += uhci_show_urbp(uhci, urbp, out, len - (out - buf));
+ tmp = tmp->next;
+ }
+ }
+
+ out += sprintf(out, "Remove list URBs:");
+ if (list_empty(&uhci->urb_remove_list))
+ out += sprintf(out, " Empty\n");
+ else {
+ out += sprintf(out, "\n");
+ count = 0;
+ head = &uhci->urb_remove_list;
+ tmp = head->next;
+ while (tmp != head) {
+ struct urb_priv *urbp = list_entry(tmp, struct urb_priv, urb_list);
+
+ out += sprintf(out, " %d: ", ++count);
+ out += uhci_show_urbp(uhci, urbp, out, len - (out - buf));
+ tmp = tmp->next;
+ }
+ }
+
+ out += sprintf(out, "Complete list URBs:");
+ if (list_empty(&uhci->complete_list))
+ out += sprintf(out, " Empty\n");
+ else {
+ out += sprintf(out, "\n");
+ count = 0;
+ head = &uhci->complete_list;
+ tmp = head->next;
+ while (tmp != head) {
+ struct urb_priv *urbp = list_entry(tmp, struct urb_priv, urb_list);
+
+ out += sprintf(out, " %d: ", ++count);
+ out += uhci_show_urbp(uhci, urbp, out, len - (out - buf));
+ tmp = tmp->next;
+ }
+ }
return out - buf;
}
static int uhci_sprint_schedule(struct uhci_hcd *uhci, char *buf, int len)
{
+ unsigned long flags;
char *out = buf;
int i, j;
struct uhci_qh *qh;
struct uhci_td *td;
struct list_head *tmp, *head;
+ spin_lock_irqsave(&uhci->lock, flags);
+
out += uhci_show_root_hub_state(uhci, out, len - (out - buf));
out += sprintf(out, "HC status\n");
out += uhci_show_status(uhci, out, len - (out - buf));
- if (debug <= 1)
- return out - buf;
out += sprintf(out, "Frame List\n");
for (i = 0; i < UHCI_NUMFRAMES; ++i) {
+ int shown = 0;
td = uhci->frame_cpu[i];
if (!td)
continue;
- out += sprintf(out, "- Frame %d\n", i); \
- if (td->dma_handle != (dma_addr_t)uhci->frame[i])
+ if (td->dma_handle != (dma_addr_t)uhci->frame[i]) {
+ show_frame_num();
out += sprintf(out, " frame list does not match td->dma_handle!\n");
+ }
+ show_frame_num();
head = &td->fl_list;
tmp = head;
out += sprintf(out, "Skeleton QHs\n");
for (i = 0; i < UHCI_NUM_SKELQH; ++i) {
- int cnt = 0;
+ int shown = 0;
qh = uhci->skelqh[i];
- out += sprintf(out, "- %s\n", qh_names[i]); \
- out += uhci_show_qh(qh, out, len - (out - buf), 4);
+
+ if (debug > 1) {
+ show_qh_name();
+ out += uhci_show_qh(qh, out, len - (out - buf), 4);
+ }
/* Last QH is the Terminating QH, it's different */
if (i == UHCI_NUM_SKELQH - 1) {
continue;
}
- j = (i < 9) ? 9 : i+1; /* Next skeleton */
- head = &qh->node;
+ j = (i < 7) ? 7 : i+1; /* Next skeleton */
+ if (list_empty(&qh->list)) {
+ if (i < UHCI_NUM_SKELQH - 1) {
+ if (qh->link !=
+ (cpu_to_le32(uhci->skelqh[j]->dma_handle) | UHCI_PTR_QH)) {
+ show_qh_name();
+ out += sprintf(out, " skeleton QH not linked to next skeleton QH!\n");
+ }
+ }
+
+ continue;
+ }
+
+ show_qh_name();
+
+ head = &qh->list;
tmp = head->next;
while (tmp != head) {
- qh = list_entry(tmp, struct uhci_qh, node);
+ qh = list_entry(tmp, struct uhci_qh, list);
+
tmp = tmp->next;
- if (++cnt <= 10)
- out += uhci_show_qh(qh, out,
- len - (out - buf), 4);
+
+ out += uhci_show_qh(qh, out, len - (out - buf), 4);
}
- if ((cnt -= 10) > 0)
- out += sprintf(out, " Skipped %d QHs\n", cnt);
- if (i > 1 && i < UHCI_NUM_SKELQH - 1) {
+ if (i < UHCI_NUM_SKELQH - 1) {
if (qh->link !=
(cpu_to_le32(uhci->skelqh[j]->dma_handle) | UHCI_PTR_QH))
out += sprintf(out, " last QH not linked to next skeleton!\n");
}
}
+ if (debug > 2)
+ out += uhci_show_lists(uhci, out, len - (out - buf));
+
+ spin_unlock_irqrestore(&uhci->lock, flags);
+
return out - buf;
}
-#ifdef CONFIG_DEBUG_FS
-
#define MAX_OUTPUT (64 * 1024)
struct uhci_debug {
int size;
char *data;
+ struct uhci_hcd *uhci;
};
static int uhci_debug_open(struct inode *inode, struct file *file)
{
- struct uhci_hcd *uhci = inode->i_private;
+ struct uhci_hcd *uhci = inode->u.generic_ip;
struct uhci_debug *up;
int ret = -ENOMEM;
- unsigned long flags;
lock_kernel();
up = kmalloc(sizeof(*up), GFP_KERNEL);
goto out;
}
- up->size = 0;
- spin_lock_irqsave(&uhci->lock, flags);
- if (uhci->is_initialized)
- up->size = uhci_sprint_schedule(uhci, up->data, MAX_OUTPUT);
- spin_unlock_irqrestore(&uhci->lock, flags);
+ up->size = uhci_sprint_schedule(uhci, up->data, MAX_OUTPUT);
file->private_data = up;
return 0;
}
-#undef uhci_debug_operations
static struct file_operations uhci_debug_operations = {
- .owner = THIS_MODULE,
.open = uhci_debug_open,
.llseek = uhci_debug_lseek,
.read = uhci_debug_read,
.release = uhci_debug_release,
};
-#endif /* CONFIG_DEBUG_FS */
-
-#else /* DEBUG */
-
-static inline void lprintk(char *buf)
-{}
-
-static inline int uhci_show_qh(struct uhci_qh *qh, char *buf,
- int len, int space)
-{
- return 0;
-}
+#else /* CONFIG_DEBUG_FS */
-static inline int uhci_sprint_schedule(struct uhci_hcd *uhci,
- char *buf, int len)
-{
- return 0;
-}
+#define uhci_debug_operations (* (struct file_operations *) NULL)
#endif
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