mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-26 19:00:25 +00:00
![Greg Kroah-Hartman](/assets/img/avatar_default.png)
Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license of the kernel, which is GPL version 2. Update the files which contain no license information with the 'GPL-2.0' SPDX license identifier. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. How this work was done: Patches were generated and checked against linux-4.14-rc6 for a subset of the use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information, Further patches will be generated in subsequent months to fix up cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords. The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base worksheet, and did an initial spot review of a few 1000 files. The 4.13 kernel was the starting point of the analysis with 60,537 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately clear with lawyers working with the Linux Foundation. Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines). All documentation files were explicitly excluded. The following heuristics were used to determine which SPDX license identifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time. In total, over 70 hours of logged manual review was done on the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation. Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related. Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files. In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier. Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correct This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified. These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
637 lines
16 KiB
C
637 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
|