638 lines
16 KiB
C
638 lines
16 KiB
C
|
// SPDX-License-Identifier: GPL-2.0
|
||
|
|
/*
|
||
|
|
* UHCI-specific debugging code. Invaluable when something
|
||
|
|
* goes wrong, but don't get in my face.
|
||
|
|
*
|
||
|
|
* Kernel visible pointers are surrounded in []s and bus
|
||
|
|
* visible pointers are surrounded in ()s
|
||
|
|
*
|
||
|
|
* (C) Copyright 1999 Linus Torvalds
|
||
|
|
* (C) Copyright 1999-2001 Johannes Erdfelt
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/slab.h>
|
||
|
|
#include <linux/kernel.h>
|
||
|
|
#include <linux/debugfs.h>
|
||
|
|
#include <asm/io.h>
|
||
|
|
|
||
|
|
#include "uhci-hcd.h"
|
||
|
|
|
||
|
|
#define EXTRA_SPACE 1024
|
||
|
|
|
||
|
|
static struct dentry *uhci_debugfs_root;
|
||
|
|
|
||
|
|
#ifdef CONFIG_DYNAMIC_DEBUG
|
||
|
|
|
||
|
|
/* Handle REALLY large printks so we don't overflow buffers */
|
||
|
|
static void lprintk(char *buf)
|
||
|
|
{
|
||
|
|
char *p;
|
||
|
|
|
||
|
|
/* Just write one line at a time */
|
||
|
|
while (buf) {
|
||
|
|
p = strchr(buf, '\n');
|
||
|
|
if (p)
|
||
|
|
*p = 0;
|
||
|
|
printk(KERN_DEBUG "%s\n", buf);
|
||
|
|
buf = p;
|
||
|
|
if (buf)
|
||
|
|
buf++;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static int uhci_show_td(struct uhci_hcd *uhci, struct uhci_td *td, char *buf,
|
||
|
|
int len, int space)
|
||
|
|
{
|
||
|
|
char *out = buf;
|
||
|
|
char *spid;
|
||
|
|
u32 status, token;
|
||
|
|
|
||
|
|
status = td_status(uhci, td);
|
||
|
|
out += sprintf(out, "%*s[%p] link (%08x) ", space, "", td,
|
||
|
|
hc32_to_cpu(uhci, td->link));
|
||
|
|
out += sprintf(out, "e%d %s%s%s%s%s%s%s%s%s%sLength=%x ",
|
||
|
|
((status >> 27) & 3),
|
||
|
|
(status & TD_CTRL_SPD) ? "SPD " : "",
|
||
|
|
(status & TD_CTRL_LS) ? "LS " : "",
|
||
|
|
(status & TD_CTRL_IOC) ? "IOC " : "",
|
||
|
|
(status & TD_CTRL_ACTIVE) ? "Active " : "",
|
||
|
|
(status & TD_CTRL_STALLED) ? "Stalled " : "",
|
||
|
|
(status & TD_CTRL_DBUFERR) ? "DataBufErr " : "",
|
||
|
|
(status & TD_CTRL_BABBLE) ? "Babble " : "",
|
||
|
|
(status & TD_CTRL_NAK) ? "NAK " : "",
|
||
|
|
(status & TD_CTRL_CRCTIMEO) ? "CRC/Timeo " : "",
|
||
|
|
(status & TD_CTRL_BITSTUFF) ? "BitStuff " : "",
|
||
|
|
status & 0x7ff);
|
||
|
|
if (out - buf > len)
|
||
|
|
goto done;
|
||
|
|
|
||
|
|
token = td_token(uhci, td);
|
||
|
|
switch (uhci_packetid(token)) {
|
||
|
|
case USB_PID_SETUP:
|
||
|
|
spid = "SETUP";
|
||
|
|
break;
|
||
|
|
case USB_PID_OUT:
|
||
|
|
spid = "OUT";
|
||
|
|
break;
|
||
|
|
case USB_PID_IN:
|
||
|
|
spid = "IN";
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
spid = "?";
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
out += sprintf(out, "MaxLen=%x DT%d EndPt=%x Dev=%x, PID=%x(%s) ",
|
||
|
|
token >> 21,
|
||
|
|
((token >> 19) & 1),
|
||
|
|
(token >> 15) & 15,
|
||
|
|
(token >> 8) & 127,
|
||
|
|
(token & 0xff),
|
||
|
|
spid);
|
||
|
|
out += sprintf(out, "(buf=%08x)\n", hc32_to_cpu(uhci, td->buffer));
|
||
|
|
|
||
|
|
done:
|
||
|
|
if (out - buf > len)
|
||
|
|
out += sprintf(out, " ...\n");
|
||
|
|
return out - buf;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int uhci_show_urbp(struct uhci_hcd *uhci, struct urb_priv *urbp,
|
||
|
|
char *buf, int len, int space)
|
||
|
|
{
|
||
|
|
char *out = buf;
|
||
|
|
struct uhci_td *td;
|
||
|
|
int i, nactive, ninactive;
|
||
|
|
char *ptype;
|
||
|
|
|
||
|
|
|
||
|
|
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"));
|
||
|
|
if (out - buf > len)
|
||
|
|
goto done;
|
||
|
|
|
||
|
|
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%s", urbp->urb->actual_length,
|
||
|
|
(urbp->qh->type == USB_ENDPOINT_XFER_CONTROL ?
|
||
|
|
"-8" : ""));
|
||
|
|
|
||
|
|
if (urbp->urb->unlinked)
|
||
|
|
out += sprintf(out, " Unlinked=%d", urbp->urb->unlinked);
|
||
|
|
out += sprintf(out, "\n");
|
||
|
|
|
||
|
|
if (out - buf > len)
|
||
|
|
goto done;
|
||
|
|
|
||
|
|
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(uhci, td, out,
|
||
|
|
len - (out - buf), 0);
|
||
|
|
if (out - buf > len)
|
||
|
|
goto tail;
|
||
|
|
} else {
|
||
|
|
if (td_status(uhci, 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);
|
||
|
|
done:
|
||
|
|
if (out - buf > len)
|
||
|
|
out += sprintf(out, " ...\n");
|
||
|
|
tail:
|
||
|
|
return out - buf;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int uhci_show_qh(struct uhci_hcd *uhci,
|
||
|
|
struct uhci_qh *qh, char *buf, int len, int space)
|
||
|
|
{
|
||
|
|
char *out = buf;
|
||
|
|
int i, nurbs;
|
||
|
|
__hc32 element = qh_element(qh);
|
||
|
|
char *qtype;
|
||
|
|
|
||
|
|
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,
|
||
|
|
hc32_to_cpu(uhci, qh->link),
|
||
|
|
hc32_to_cpu(uhci, element));
|
||
|
|
if (qh->type == USB_ENDPOINT_XFER_ISOC)
|
||
|
|
out += sprintf(out,
|
||
|
|
"%*s period %d phase %d load %d us, frame %x desc [%p]\n",
|
||
|
|
space, "", qh->period, qh->phase, qh->load,
|
||
|
|
qh->iso_frame, qh->iso_packet_desc);
|
||
|
|
else if (qh->type == USB_ENDPOINT_XFER_INT)
|
||
|
|
out += sprintf(out, "%*s period %d phase %d load %d us\n",
|
||
|
|
space, "", qh->period, qh->phase, qh->load);
|
||
|
|
if (out - buf > len)
|
||
|
|
goto done;
|
||
|
|
|
||
|
|
if (element & UHCI_PTR_QH(uhci))
|
||
|
|
out += sprintf(out, "%*s Element points to QH (bug?)\n", space, "");
|
||
|
|
|
||
|
|
if (element & UHCI_PTR_DEPTH(uhci))
|
||
|
|
out += sprintf(out, "%*s Depth traverse\n", space, "");
|
||
|
|
|
||
|
|
if (element & cpu_to_hc32(uhci, 8))
|
||
|
|
out += sprintf(out, "%*s Bit 3 set (bug?)\n", space, "");
|
||
|
|
|
||
|
|
if (!(element & ~(UHCI_PTR_QH(uhci) | UHCI_PTR_DEPTH(uhci))))
|
||
|
|
out += sprintf(out, "%*s Element is NULL (bug?)\n", space, "");
|
||
|
|
|
||
|
|
if (out - buf > len)
|
||
|
|
goto done;
|
||
|
|
|
||
|
|
if (list_empty(&qh->queue)) {
|
||
|
|
out += sprintf(out, "%*s queue is empty\n", space, "");
|
||
|
|
if (qh == uhci->skel_async_qh) {
|
||
|
|
out += uhci_show_td(uhci, uhci->term_td, out,
|
||
|
|
len - (out - buf), 0);
|
||
|
|
if (out - buf > len)
|
||
|
|
goto tail;
|
||
|
|
}
|
||
|
|
} 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 (element != LINK_TO_TD(uhci, td))
|
||
|
|
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(uhci, urbp, out,
|
||
|
|
len - (out - buf), space + 2);
|
||
|
|
if (out - buf > len)
|
||
|
|
goto tail;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
++nurbs;
|
||
|
|
}
|
||
|
|
if (nurbs > 0)
|
||
|
|
out += sprintf(out, "%*s Skipped %d URBs\n",
|
||
|
|
space, "", nurbs);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (out - buf > len)
|
||
|
|
goto done;
|
||
|
|
|
||
|
|
if (qh->dummy_td) {
|
||
|
|
out += sprintf(out, "%*s Dummy TD\n", space, "");
|
||
|
|
out += uhci_show_td(uhci, qh->dummy_td, out,
|
||
|
|
len - (out - buf), 0);
|
||
|
|
if (out - buf > len)
|
||
|
|
goto tail;
|
||
|
|
}
|
||
|
|
|
||
|
|
done:
|
||
|
|
if (out - buf > len)
|
||
|
|
out += sprintf(out, " ...\n");
|
||
|
|
tail:
|
||
|
|
return out - buf;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int uhci_show_sc(int port, unsigned short status, char *buf)
|
||
|
|
{
|
||
|
|
return sprintf(buf, " stat%d = %04x %s%s%s%s%s%s%s%s%s%s\n",
|
||
|
|
port,
|
||
|
|
status,
|
||
|
|
(status & USBPORTSC_SUSP) ? " Suspend" : "",
|
||
|
|
(status & USBPORTSC_OCC) ? " OverCurrentChange" : "",
|
||
|
|
(status & USBPORTSC_OC) ? " OverCurrent" : "",
|
||
|
|
(status & USBPORTSC_PR) ? " Reset" : "",
|
||
|
|
(status & USBPORTSC_LSDA) ? " LowSpeed" : "",
|
||
|
|
(status & USBPORTSC_RD) ? " ResumeDetect" : "",
|
||
|
|
(status & USBPORTSC_PEC) ? " EnableChange" : "",
|
||
|
|
(status & USBPORTSC_PE) ? " Enabled" : "",
|
||
|
|
(status & USBPORTSC_CSC) ? " ConnectChange" : "",
|
||
|
|
(status & USBPORTSC_CCS) ? " Connected" : "");
|
||
|
|
}
|
||
|
|
|
||
|
|
static int uhci_show_root_hub_state(struct uhci_hcd *uhci, char *buf)
|
||
|
|
{
|
||
|
|
char *rh_state;
|
||
|
|
|
||
|
|
switch (uhci->rh_state) {
|
||
|
|
case UHCI_RH_RESET:
|
||
|
|
rh_state = "reset"; break;
|
||
|
|
case UHCI_RH_SUSPENDED:
|
||
|
|
rh_state = "suspended"; break;
|
||
|
|
case UHCI_RH_AUTO_STOPPED:
|
||
|
|
rh_state = "auto-stopped"; break;
|
||
|
|
case UHCI_RH_RESUMING:
|
||
|
|
rh_state = "resuming"; break;
|
||
|
|
case UHCI_RH_SUSPENDING:
|
||
|
|
rh_state = "suspending"; break;
|
||
|
|
case UHCI_RH_RUNNING:
|
||
|
|
rh_state = "running"; break;
|
||
|
|
case UHCI_RH_RUNNING_NODEVS:
|
||
|
|
rh_state = "running, no devs"; break;
|
||
|
|
default:
|
||
|
|
rh_state = "?"; break;
|
||
|
|
}
|
||
|
|
return sprintf(buf, "Root-hub state: %s FSBR: %d\n",
|
||
|
|
rh_state, uhci->fsbr_is_on);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int uhci_show_status(struct uhci_hcd *uhci, char *buf, int len)
|
||
|
|
{
|
||
|
|
char *out = buf;
|
||
|
|
unsigned short usbcmd, usbstat, usbint, usbfrnum;
|
||
|
|
unsigned int flbaseadd;
|
||
|
|
unsigned char sof;
|
||
|
|
unsigned short portsc1, portsc2;
|
||
|
|
|
||
|
|
|
||
|
|
usbcmd = uhci_readw(uhci, USBCMD);
|
||
|
|
usbstat = uhci_readw(uhci, USBSTS);
|
||
|
|
usbint = uhci_readw(uhci, USBINTR);
|
||
|
|
usbfrnum = uhci_readw(uhci, USBFRNUM);
|
||
|
|
flbaseadd = uhci_readl(uhci, USBFLBASEADD);
|
||
|
|
sof = uhci_readb(uhci, USBSOF);
|
||
|
|
portsc1 = uhci_readw(uhci, USBPORTSC1);
|
||
|
|
portsc2 = uhci_readw(uhci, USBPORTSC2);
|
||
|
|
|
||
|
|
out += sprintf(out, " usbcmd = %04x %s%s%s%s%s%s%s%s\n",
|
||
|
|
usbcmd,
|
||
|
|
(usbcmd & USBCMD_MAXP) ? "Maxp64 " : "Maxp32 ",
|
||
|
|
(usbcmd & USBCMD_CF) ? "CF " : "",
|
||
|
|
(usbcmd & USBCMD_SWDBG) ? "SWDBG " : "",
|
||
|
|
(usbcmd & USBCMD_FGR) ? "FGR " : "",
|
||
|
|
(usbcmd & USBCMD_EGSM) ? "EGSM " : "",
|
||
|
|
(usbcmd & USBCMD_GRESET) ? "GRESET " : "",
|
||
|
|
(usbcmd & USBCMD_HCRESET) ? "HCRESET " : "",
|
||
|
|
(usbcmd & USBCMD_RS) ? "RS " : "");
|
||
|
|
if (out - buf > len)
|
||
|
|
goto done;
|
||
|
|
|
||
|
|
out += sprintf(out, " usbstat = %04x %s%s%s%s%s%s\n",
|
||
|
|
usbstat,
|
||
|
|
(usbstat & USBSTS_HCH) ? "HCHalted " : "",
|
||
|
|
(usbstat & USBSTS_HCPE) ? "HostControllerProcessError " : "",
|
||
|
|
(usbstat & USBSTS_HSE) ? "HostSystemError " : "",
|
||
|
|
(usbstat & USBSTS_RD) ? "ResumeDetect " : "",
|
||
|
|
(usbstat & USBSTS_ERROR) ? "USBError " : "",
|
||
|
|
(usbstat & USBSTS_USBINT) ? "USBINT " : "");
|
||
|
|
if (out - buf > len)
|
||
|
|
goto done;
|
||
|
|
|
||
|
|
out += sprintf(out, " usbint = %04x\n", usbint);
|
||
|
|
out += sprintf(out, " usbfrnum = (%d)%03x\n", (usbfrnum >> 10) & 1,
|
||
|
|
0xfff & (4*(unsigned int)usbfrnum));
|
||
|
|
out += sprintf(out, " flbaseadd = %08x\n", flbaseadd);
|
||
|
|
out += sprintf(out, " sof = %02x\n", sof);
|
||
|
|
if (out - buf > len)
|
||
|
|
goto done;
|
||
|
|
|
||
|
|
out += uhci_show_sc(1, portsc1, out);
|
||
|
|
if (out - buf > len)
|
||
|
|
goto done;
|
||
|
|
|
||
|
|
out += uhci_show_sc(2, portsc2, out);
|
||
|
|
if (out - buf > len)
|
||
|
|
goto done;
|
||
|
|
|
||
|
|
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);
|
||
|
|
|
||
|
|
done:
|
||
|
|
if (out - buf > len)
|
||
|
|
out += sprintf(out, " ...\n");
|
||
|
|
return out - buf;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int uhci_sprint_schedule(struct uhci_hcd *uhci, char *buf, int len)
|
||
|
|
{
|
||
|
|
char *out = buf;
|
||
|
|
int i, j;
|
||
|
|
struct uhci_qh *qh;
|
||
|
|
struct uhci_td *td;
|
||
|
|
struct list_head *tmp, *head;
|
||
|
|
int nframes, nerrs;
|
||
|
|
__hc32 link;
|
||
|
|
__hc32 fsbr_link;
|
||
|
|
|
||
|
|
static const char * const qh_names[] = {
|
||
|
|
"unlink", "iso", "int128", "int64", "int32", "int16",
|
||
|
|
"int8", "int4", "int2", "async", "term"
|
||
|
|
};
|
||
|
|
|
||
|
|
out += uhci_show_root_hub_state(uhci, out);
|
||
|
|
if (out - buf > len)
|
||
|
|
goto done;
|
||
|
|
out += sprintf(out, "HC status\n");
|
||
|
|
out += uhci_show_status(uhci, out, len - (out - buf));
|
||
|
|
if (out - buf > len)
|
||
|
|
goto tail;
|
||
|
|
|
||
|
|
out += sprintf(out, "Periodic load table\n");
|
||
|
|
for (i = 0; i < MAX_PHASE; ++i) {
|
||
|
|
out += sprintf(out, "\t%d", uhci->load[i]);
|
||
|
|
if (i % 8 == 7)
|
||
|
|
*out++ = '\n';
|
||
|
|
}
|
||
|
|
out += sprintf(out, "Total: %d, #INT: %d, #ISO: %d\n",
|
||
|
|
uhci->total_load,
|
||
|
|
uhci_to_hcd(uhci)->self.bandwidth_int_reqs,
|
||
|
|
uhci_to_hcd(uhci)->self.bandwidth_isoc_reqs);
|
||
|
|
if (debug <= 1)
|
||
|
|
goto tail;
|
||
|
|
|
||
|
|
out += sprintf(out, "Frame List\n");
|
||
|
|
nframes = 10;
|
||
|
|
nerrs = 0;
|
||
|
|
for (i = 0; i < UHCI_NUMFRAMES; ++i) {
|
||
|
|
__hc32 qh_dma;
|
||
|
|
|
||
|
|
if (out - buf > len)
|
||
|
|
goto done;
|
||
|
|
j = 0;
|
||
|
|
td = uhci->frame_cpu[i];
|
||
|
|
link = uhci->frame[i];
|
||
|
|
if (!td)
|
||
|
|
goto check_link;
|
||
|
|
|
||
|
|
if (nframes > 0) {
|
||
|
|
out += sprintf(out, "- Frame %d -> (%08x)\n",
|
||
|
|
i, hc32_to_cpu(uhci, link));
|
||
|
|
j = 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
head = &td->fl_list;
|
||
|
|
tmp = head;
|
||
|
|
do {
|
||
|
|
td = list_entry(tmp, struct uhci_td, fl_list);
|
||
|
|
tmp = tmp->next;
|
||
|
|
if (link != LINK_TO_TD(uhci, td)) {
|
||
|
|
if (nframes > 0) {
|
||
|
|
out += sprintf(out,
|
||
|
|
" link does not match list entry!\n");
|
||
|
|
if (out - buf > len)
|
||
|
|
goto done;
|
||
|
|
} else
|
||
|
|
++nerrs;
|
||
|
|
}
|
||
|
|
if (nframes > 0) {
|
||
|
|
out += uhci_show_td(uhci, td, out,
|
||
|
|
len - (out - buf), 4);
|
||
|
|
if (out - buf > len)
|
||
|
|
goto tail;
|
||
|
|
}
|
||
|
|
link = td->link;
|
||
|
|
} while (tmp != head);
|
||
|
|
|
||
|
|
check_link:
|
||
|
|
qh_dma = uhci_frame_skel_link(uhci, i);
|
||
|
|
if (link != qh_dma) {
|
||
|
|
if (nframes > 0) {
|
||
|
|
if (!j) {
|
||
|
|
out += sprintf(out,
|
||
|
|
"- Frame %d -> (%08x)\n",
|
||
|
|
i, hc32_to_cpu(uhci, link));
|
||
|
|
j = 1;
|
||
|
|
}
|
||
|
|
out += sprintf(out,
|
||
|
|
" link does not match QH (%08x)!\n",
|
||
|
|
hc32_to_cpu(uhci, qh_dma));
|
||
|
|
if (out - buf > len)
|
||
|
|
goto done;
|
||
|
|
} else
|
||
|
|
++nerrs;
|
||
|
|
}
|
||
|
|
nframes -= j;
|
||
|
|
}
|
||
|
|
if (nerrs > 0)
|
||
|
|
out += sprintf(out, "Skipped %d bad links\n", nerrs);
|
||
|
|
|
||
|
|
out += sprintf(out, "Skeleton QHs\n");
|
||
|
|
|
||
|
|
if (out - buf > len)
|
||
|
|
goto done;
|
||
|
|
|
||
|
|
fsbr_link = 0;
|
||
|
|
for (i = 0; i < UHCI_NUM_SKELQH; ++i) {
|
||
|
|
int cnt = 0;
|
||
|
|
|
||
|
|
qh = uhci->skelqh[i];
|
||
|
|
out += sprintf(out, "- skel_%s_qh\n", qh_names[i]);
|
||
|
|
out += uhci_show_qh(uhci, qh, out, len - (out - buf), 4);
|
||
|
|
if (out - buf > len)
|
||
|
|
goto tail;
|
||
|
|
|
||
|
|
/* Last QH is the Terminating QH, it's different */
|
||
|
|
if (i == SKEL_TERM) {
|
||
|
|
if (qh_element(qh) != LINK_TO_TD(uhci, uhci->term_td)) {
|
||
|
|
out += sprintf(out,
|
||
|
|
" skel_term_qh element is not set to term_td!\n");
|
||
|
|
if (out - buf > len)
|
||
|
|
goto done;
|
||
|
|
}
|
||
|
|
link = fsbr_link;
|
||
|
|
if (!link)
|
||
|
|
link = LINK_TO_QH(uhci, uhci->skel_term_qh);
|
||
|
|
goto check_qh_link;
|
||
|
|
}
|
||
|
|
|
||
|
|
head = &qh->node;
|
||
|
|
tmp = head->next;
|
||
|
|
|
||
|
|
while (tmp != head) {
|
||
|
|
qh = list_entry(tmp, struct uhci_qh, node);
|
||
|
|
tmp = tmp->next;
|
||
|
|
if (++cnt <= 10) {
|
||
|
|
out += uhci_show_qh(uhci, qh, out,
|
||
|
|
len - (out - buf), 4);
|
||
|
|
if (out - buf > len)
|
||
|
|
goto tail;
|
||
|
|
}
|
||
|
|
if (!fsbr_link && qh->skel >= SKEL_FSBR)
|
||
|
|
fsbr_link = LINK_TO_QH(uhci, qh);
|
||
|
|
}
|
||
|
|
if ((cnt -= 10) > 0)
|
||
|
|
out += sprintf(out, " Skipped %d QHs\n", cnt);
|
||
|
|
|
||
|
|
link = UHCI_PTR_TERM(uhci);
|
||
|
|
if (i <= SKEL_ISO)
|
||
|
|
;
|
||
|
|
else if (i < SKEL_ASYNC)
|
||
|
|
link = LINK_TO_QH(uhci, uhci->skel_async_qh);
|
||
|
|
else if (!uhci->fsbr_is_on)
|
||
|
|
;
|
||
|
|
else
|
||
|
|
link = LINK_TO_QH(uhci, uhci->skel_term_qh);
|
||
|
|
check_qh_link:
|
||
|
|
if (qh->link != link)
|
||
|
|
out += sprintf(out,
|
||
|
|
" last QH not linked to next skeleton!\n");
|
||
|
|
|
||
|
|
if (out - buf > len)
|
||
|
|
goto done;
|
||
|
|
}
|
||
|
|
|
||
|
|
done:
|
||
|
|
if (out - buf > len)
|
||
|
|
out += sprintf(out, " ...\n");
|
||
|
|
tail:
|
||
|
|
return out - buf;
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifdef CONFIG_DEBUG_FS
|
||
|
|
|
||
|
|
#define MAX_OUTPUT (64 * 1024)
|
||
|
|
|
||
|
|
struct uhci_debug {
|
||
|
|
int size;
|
||
|
|
char *data;
|
||
|
|
};
|
||
|
|
|
||
|
|
static int uhci_debug_open(struct inode *inode, struct file *file)
|
||
|
|
{
|
||
|
|
struct uhci_hcd *uhci = inode->i_private;
|
||
|
|
struct uhci_debug *up;
|
||
|
|
unsigned long flags;
|
||
|
|
|
||
|
|
up = kmalloc(sizeof(*up), GFP_KERNEL);
|
||
|
|
if (!up)
|
||
|
|
return -ENOMEM;
|
||
|
|
|
||
|
|
up->data = kmalloc(MAX_OUTPUT, GFP_KERNEL);
|
||
|
|
if (!up->data) {
|
||
|
|
kfree(up);
|
||
|
|
return -ENOMEM;
|
||
|
|
}
|
||
|
|
|
||
|
|
up->size = 0;
|
||
|
|
spin_lock_irqsave(&uhci->lock, flags);
|
||
|
|
if (uhci->is_initialized)
|
||
|
|
up->size = uhci_sprint_schedule(uhci, up->data,
|
||
|
|
MAX_OUTPUT - EXTRA_SPACE);
|
||
|
|
spin_unlock_irqrestore(&uhci->lock, flags);
|
||
|
|
|
||
|
|
file->private_data = up;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static loff_t uhci_debug_lseek(struct file *file, loff_t off, int whence)
|
||
|
|
{
|
||
|
|
struct uhci_debug *up = file->private_data;
|
||
|
|
return no_seek_end_llseek_size(file, off, whence, up->size);
|
||
|
|
}
|
||
|
|
|
||
|
|
static ssize_t uhci_debug_read(struct file *file, char __user *buf,
|
||
|
|
size_t nbytes, loff_t *ppos)
|
||
|
|
{
|
||
|
|
struct uhci_debug *up = file->private_data;
|
||
|
|
return simple_read_from_buffer(buf, nbytes, ppos, up->data, up->size);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int uhci_debug_release(struct inode *inode, struct file *file)
|
||
|
|
{
|
||
|
|
struct uhci_debug *up = file->private_data;
|
||
|
|
|
||
|
|
kfree(up->data);
|
||
|
|
kfree(up);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static const 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,
|
||
|
|
};
|
||
|
|
#define UHCI_DEBUG_OPS
|
||
|
|
|
||
|
|
#endif /* CONFIG_DEBUG_FS */
|
||
|
|
|
||
|
|
#else /* CONFIG_DYNAMIC_DEBUG*/
|
||
|
|
|
||
|
|
static inline void lprintk(char *buf)
|
||
|
|
{}
|
||
|
|
|
||
|
|
static inline int uhci_show_qh(struct uhci_hcd *uhci,
|
||
|
|
struct uhci_qh *qh, char *buf, int len, int space)
|
||
|
|
{
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline int uhci_sprint_schedule(struct uhci_hcd *uhci,
|
||
|
|
char *buf, int len)
|
||
|
|
{
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif
|