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M7350/kernel/drivers/usb/dwc3/debugfs.c

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M7350v1_en_gpl
2024-09-09 08:52:07 +00:00
/**
* debugfs.c - DesignWare USB3 DRD Controller DebugFS file
*
* Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
*
* Authors: Felipe Balbi <balbi@ti.com>,
* Sebastian Andrzej Siewior <bigeasy@linutronix.de>
*
M7350v5_en_gpl
2024-09-09 08:57:42 +00:00
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 of
* the License as published by the Free Software Foundation.
M7350v1_en_gpl
2024-09-09 08:52:07 +00:00
*
M7350v5_en_gpl
2024-09-09 08:57:42 +00:00
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
M7350v1_en_gpl
2024-09-09 08:52:07 +00:00
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/ptrace.h>
#include <linux/types.h>
#include <linux/spinlock.h>
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include <linux/delay.h>
#include <linux/uaccess.h>
#include <linux/usb/ch9.h>
#include "core.h"
#include "gadget.h"
#include "io.h"
#include "debug.h"
#define dump_register(nm) \
{ \
.name = __stringify(nm), \
.offset = DWC3_ ##nm - DWC3_GLOBALS_REGS_START, \
}
M7350v5_en_gpl
2024-09-09 08:57:42 +00:00
#define ep_event_rate(ev, c, p, dt) \
((dt) ? ((c.ev - p.ev) * (MSEC_PER_SEC)) / (dt) : 0)
M7350v1_en_gpl
2024-09-09 08:52:07 +00:00
static const struct debugfs_reg32 dwc3_regs[] = {
dump_register(GSBUSCFG0),
dump_register(GSBUSCFG1),
dump_register(GTXTHRCFG),
dump_register(GRXTHRCFG),
dump_register(GCTL),
dump_register(GEVTEN),
dump_register(GSTS),
dump_register(GSNPSID),
dump_register(GGPIO),
dump_register(GUID),
dump_register(GUCTL),
dump_register(GBUSERRADDR0),
dump_register(GBUSERRADDR1),
dump_register(GPRTBIMAP0),
dump_register(GPRTBIMAP1),
dump_register(GHWPARAMS0),
dump_register(GHWPARAMS1),
dump_register(GHWPARAMS2),
dump_register(GHWPARAMS3),
dump_register(GHWPARAMS4),
dump_register(GHWPARAMS5),
dump_register(GHWPARAMS6),
dump_register(GHWPARAMS7),
dump_register(GDBGFIFOSPACE),
dump_register(GDBGLTSSM),
dump_register(GPRTBIMAP_HS0),
dump_register(GPRTBIMAP_HS1),
dump_register(GPRTBIMAP_FS0),
dump_register(GPRTBIMAP_FS1),
dump_register(GUSB2PHYCFG(0)),
dump_register(GUSB2PHYCFG(1)),
dump_register(GUSB2PHYCFG(2)),
dump_register(GUSB2PHYCFG(3)),
dump_register(GUSB2PHYCFG(4)),
dump_register(GUSB2PHYCFG(5)),
dump_register(GUSB2PHYCFG(6)),
dump_register(GUSB2PHYCFG(7)),
dump_register(GUSB2PHYCFG(8)),
dump_register(GUSB2PHYCFG(9)),
dump_register(GUSB2PHYCFG(10)),
dump_register(GUSB2PHYCFG(11)),
dump_register(GUSB2PHYCFG(12)),
dump_register(GUSB2PHYCFG(13)),
dump_register(GUSB2PHYCFG(14)),
dump_register(GUSB2PHYCFG(15)),
dump_register(GUSB2I2CCTL(0)),
dump_register(GUSB2I2CCTL(1)),
dump_register(GUSB2I2CCTL(2)),
dump_register(GUSB2I2CCTL(3)),
dump_register(GUSB2I2CCTL(4)),
dump_register(GUSB2I2CCTL(5)),
dump_register(GUSB2I2CCTL(6)),
dump_register(GUSB2I2CCTL(7)),
dump_register(GUSB2I2CCTL(8)),
dump_register(GUSB2I2CCTL(9)),
dump_register(GUSB2I2CCTL(10)),
dump_register(GUSB2I2CCTL(11)),
dump_register(GUSB2I2CCTL(12)),
dump_register(GUSB2I2CCTL(13)),
dump_register(GUSB2I2CCTL(14)),
dump_register(GUSB2I2CCTL(15)),
dump_register(GUSB2PHYACC(0)),
dump_register(GUSB2PHYACC(1)),
dump_register(GUSB2PHYACC(2)),
dump_register(GUSB2PHYACC(3)),
dump_register(GUSB2PHYACC(4)),
dump_register(GUSB2PHYACC(5)),
dump_register(GUSB2PHYACC(6)),
dump_register(GUSB2PHYACC(7)),
dump_register(GUSB2PHYACC(8)),
dump_register(GUSB2PHYACC(9)),
dump_register(GUSB2PHYACC(10)),
dump_register(GUSB2PHYACC(11)),
dump_register(GUSB2PHYACC(12)),
dump_register(GUSB2PHYACC(13)),
dump_register(GUSB2PHYACC(14)),
dump_register(GUSB2PHYACC(15)),
dump_register(GUSB3PIPECTL(0)),
dump_register(GUSB3PIPECTL(1)),
dump_register(GUSB3PIPECTL(2)),
dump_register(GUSB3PIPECTL(3)),
dump_register(GUSB3PIPECTL(4)),
dump_register(GUSB3PIPECTL(5)),
dump_register(GUSB3PIPECTL(6)),
dump_register(GUSB3PIPECTL(7)),
dump_register(GUSB3PIPECTL(8)),
dump_register(GUSB3PIPECTL(9)),
dump_register(GUSB3PIPECTL(10)),
dump_register(GUSB3PIPECTL(11)),
dump_register(GUSB3PIPECTL(12)),
dump_register(GUSB3PIPECTL(13)),
dump_register(GUSB3PIPECTL(14)),
dump_register(GUSB3PIPECTL(15)),
dump_register(GTXFIFOSIZ(0)),
dump_register(GTXFIFOSIZ(1)),
dump_register(GTXFIFOSIZ(2)),
dump_register(GTXFIFOSIZ(3)),
dump_register(GTXFIFOSIZ(4)),
dump_register(GTXFIFOSIZ(5)),
dump_register(GTXFIFOSIZ(6)),
dump_register(GTXFIFOSIZ(7)),
dump_register(GTXFIFOSIZ(8)),
dump_register(GTXFIFOSIZ(9)),
dump_register(GTXFIFOSIZ(10)),
dump_register(GTXFIFOSIZ(11)),
dump_register(GTXFIFOSIZ(12)),
dump_register(GTXFIFOSIZ(13)),
dump_register(GTXFIFOSIZ(14)),
dump_register(GTXFIFOSIZ(15)),
dump_register(GTXFIFOSIZ(16)),
dump_register(GTXFIFOSIZ(17)),
dump_register(GTXFIFOSIZ(18)),
dump_register(GTXFIFOSIZ(19)),
dump_register(GTXFIFOSIZ(20)),
dump_register(GTXFIFOSIZ(21)),
dump_register(GTXFIFOSIZ(22)),
dump_register(GTXFIFOSIZ(23)),
dump_register(GTXFIFOSIZ(24)),
dump_register(GTXFIFOSIZ(25)),
dump_register(GTXFIFOSIZ(26)),
dump_register(GTXFIFOSIZ(27)),
dump_register(GTXFIFOSIZ(28)),
dump_register(GTXFIFOSIZ(29)),
dump_register(GTXFIFOSIZ(30)),
dump_register(GTXFIFOSIZ(31)),
dump_register(GRXFIFOSIZ(0)),
dump_register(GRXFIFOSIZ(1)),
dump_register(GRXFIFOSIZ(2)),
dump_register(GRXFIFOSIZ(3)),
dump_register(GRXFIFOSIZ(4)),
dump_register(GRXFIFOSIZ(5)),
dump_register(GRXFIFOSIZ(6)),
dump_register(GRXFIFOSIZ(7)),
dump_register(GRXFIFOSIZ(8)),
dump_register(GRXFIFOSIZ(9)),
dump_register(GRXFIFOSIZ(10)),
dump_register(GRXFIFOSIZ(11)),
dump_register(GRXFIFOSIZ(12)),
dump_register(GRXFIFOSIZ(13)),
dump_register(GRXFIFOSIZ(14)),
dump_register(GRXFIFOSIZ(15)),
dump_register(GRXFIFOSIZ(16)),
dump_register(GRXFIFOSIZ(17)),
dump_register(GRXFIFOSIZ(18)),
dump_register(GRXFIFOSIZ(19)),
dump_register(GRXFIFOSIZ(20)),
dump_register(GRXFIFOSIZ(21)),
dump_register(GRXFIFOSIZ(22)),
dump_register(GRXFIFOSIZ(23)),
dump_register(GRXFIFOSIZ(24)),
dump_register(GRXFIFOSIZ(25)),
dump_register(GRXFIFOSIZ(26)),
dump_register(GRXFIFOSIZ(27)),
dump_register(GRXFIFOSIZ(28)),
dump_register(GRXFIFOSIZ(29)),
dump_register(GRXFIFOSIZ(30)),
dump_register(GRXFIFOSIZ(31)),
dump_register(GEVNTADRLO(0)),
dump_register(GEVNTADRHI(0)),
dump_register(GEVNTSIZ(0)),
dump_register(GEVNTCOUNT(0)),
dump_register(GHWPARAMS8),
M7350v5_en_gpl
2024-09-09 08:57:42 +00:00
dump_register(GFLADJ),
M7350v1_en_gpl
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dump_register(DCFG),
dump_register(DCTL),
dump_register(DEVTEN),
dump_register(DSTS),
dump_register(DGCMDPAR),
dump_register(DGCMD),
dump_register(DALEPENA),
dump_register(DEPCMDPAR2(0)),
dump_register(DEPCMDPAR2(1)),
dump_register(DEPCMDPAR2(2)),
dump_register(DEPCMDPAR2(3)),
dump_register(DEPCMDPAR2(4)),
dump_register(DEPCMDPAR2(5)),
dump_register(DEPCMDPAR2(6)),
dump_register(DEPCMDPAR2(7)),
dump_register(DEPCMDPAR2(8)),
dump_register(DEPCMDPAR2(9)),
dump_register(DEPCMDPAR2(10)),
dump_register(DEPCMDPAR2(11)),
dump_register(DEPCMDPAR2(12)),
dump_register(DEPCMDPAR2(13)),
dump_register(DEPCMDPAR2(14)),
dump_register(DEPCMDPAR2(15)),
dump_register(DEPCMDPAR2(16)),
dump_register(DEPCMDPAR2(17)),
dump_register(DEPCMDPAR2(18)),
dump_register(DEPCMDPAR2(19)),
dump_register(DEPCMDPAR2(20)),
dump_register(DEPCMDPAR2(21)),
dump_register(DEPCMDPAR2(22)),
dump_register(DEPCMDPAR2(23)),
dump_register(DEPCMDPAR2(24)),
dump_register(DEPCMDPAR2(25)),
dump_register(DEPCMDPAR2(26)),
dump_register(DEPCMDPAR2(27)),
dump_register(DEPCMDPAR2(28)),
dump_register(DEPCMDPAR2(29)),
dump_register(DEPCMDPAR2(30)),
dump_register(DEPCMDPAR2(31)),
dump_register(DEPCMDPAR1(0)),
dump_register(DEPCMDPAR1(1)),
dump_register(DEPCMDPAR1(2)),
dump_register(DEPCMDPAR1(3)),
dump_register(DEPCMDPAR1(4)),
dump_register(DEPCMDPAR1(5)),
dump_register(DEPCMDPAR1(6)),
dump_register(DEPCMDPAR1(7)),
dump_register(DEPCMDPAR1(8)),
dump_register(DEPCMDPAR1(9)),
dump_register(DEPCMDPAR1(10)),
dump_register(DEPCMDPAR1(11)),
dump_register(DEPCMDPAR1(12)),
dump_register(DEPCMDPAR1(13)),
dump_register(DEPCMDPAR1(14)),
dump_register(DEPCMDPAR1(15)),
dump_register(DEPCMDPAR1(16)),
dump_register(DEPCMDPAR1(17)),
dump_register(DEPCMDPAR1(18)),
dump_register(DEPCMDPAR1(19)),
dump_register(DEPCMDPAR1(20)),
dump_register(DEPCMDPAR1(21)),
dump_register(DEPCMDPAR1(22)),
dump_register(DEPCMDPAR1(23)),
dump_register(DEPCMDPAR1(24)),
dump_register(DEPCMDPAR1(25)),
dump_register(DEPCMDPAR1(26)),
dump_register(DEPCMDPAR1(27)),
dump_register(DEPCMDPAR1(28)),
dump_register(DEPCMDPAR1(29)),
dump_register(DEPCMDPAR1(30)),
dump_register(DEPCMDPAR1(31)),
dump_register(DEPCMDPAR0(0)),
dump_register(DEPCMDPAR0(1)),
dump_register(DEPCMDPAR0(2)),
dump_register(DEPCMDPAR0(3)),
dump_register(DEPCMDPAR0(4)),
dump_register(DEPCMDPAR0(5)),
dump_register(DEPCMDPAR0(6)),
dump_register(DEPCMDPAR0(7)),
dump_register(DEPCMDPAR0(8)),
dump_register(DEPCMDPAR0(9)),
dump_register(DEPCMDPAR0(10)),
dump_register(DEPCMDPAR0(11)),
dump_register(DEPCMDPAR0(12)),
dump_register(DEPCMDPAR0(13)),
dump_register(DEPCMDPAR0(14)),
dump_register(DEPCMDPAR0(15)),
dump_register(DEPCMDPAR0(16)),
dump_register(DEPCMDPAR0(17)),
dump_register(DEPCMDPAR0(18)),
dump_register(DEPCMDPAR0(19)),
dump_register(DEPCMDPAR0(20)),
dump_register(DEPCMDPAR0(21)),
dump_register(DEPCMDPAR0(22)),
dump_register(DEPCMDPAR0(23)),
dump_register(DEPCMDPAR0(24)),
dump_register(DEPCMDPAR0(25)),
dump_register(DEPCMDPAR0(26)),
dump_register(DEPCMDPAR0(27)),
dump_register(DEPCMDPAR0(28)),
dump_register(DEPCMDPAR0(29)),
dump_register(DEPCMDPAR0(30)),
dump_register(DEPCMDPAR0(31)),
dump_register(DEPCMD(0)),
dump_register(DEPCMD(1)),
dump_register(DEPCMD(2)),
dump_register(DEPCMD(3)),
dump_register(DEPCMD(4)),
dump_register(DEPCMD(5)),
dump_register(DEPCMD(6)),
dump_register(DEPCMD(7)),
dump_register(DEPCMD(8)),
dump_register(DEPCMD(9)),
dump_register(DEPCMD(10)),
dump_register(DEPCMD(11)),
dump_register(DEPCMD(12)),
dump_register(DEPCMD(13)),
dump_register(DEPCMD(14)),
dump_register(DEPCMD(15)),
dump_register(DEPCMD(16)),
dump_register(DEPCMD(17)),
dump_register(DEPCMD(18)),
dump_register(DEPCMD(19)),
dump_register(DEPCMD(20)),
dump_register(DEPCMD(21)),
dump_register(DEPCMD(22)),
dump_register(DEPCMD(23)),
dump_register(DEPCMD(24)),
dump_register(DEPCMD(25)),
dump_register(DEPCMD(26)),
dump_register(DEPCMD(27)),
dump_register(DEPCMD(28)),
dump_register(DEPCMD(29)),
dump_register(DEPCMD(30)),
dump_register(DEPCMD(31)),
dump_register(OCFG),
dump_register(OCTL),
M7350v5_en_gpl
2024-09-09 08:57:42 +00:00
dump_register(OEVT),
M7350v1_en_gpl
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dump_register(OEVTEN),
dump_register(OSTS),
};
static int dwc3_mode_show(struct seq_file *s, void *unused)
{
struct dwc3 *dwc = s->private;
unsigned long flags;
u32 reg;
spin_lock_irqsave(&dwc->lock, flags);
reg = dwc3_readl(dwc->regs, DWC3_GCTL);
spin_unlock_irqrestore(&dwc->lock, flags);
switch (DWC3_GCTL_PRTCAP(reg)) {
case DWC3_GCTL_PRTCAP_HOST:
seq_printf(s, "host\n");
break;
case DWC3_GCTL_PRTCAP_DEVICE:
seq_printf(s, "device\n");
break;
case DWC3_GCTL_PRTCAP_OTG:
seq_printf(s, "OTG\n");
break;
default:
seq_printf(s, "UNKNOWN %08x\n", DWC3_GCTL_PRTCAP(reg));
}
return 0;
}
static int dwc3_mode_open(struct inode *inode, struct file *file)
{
return single_open(file, dwc3_mode_show, inode->i_private);
}
static ssize_t dwc3_mode_write(struct file *file,
const char __user *ubuf, size_t count, loff_t *ppos)
{
struct seq_file *s = file->private_data;
struct dwc3 *dwc = s->private;
unsigned long flags;
u32 mode = 0;
char buf[32];
if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
return -EFAULT;
if (!strncmp(buf, "host", 4))
mode |= DWC3_GCTL_PRTCAP_HOST;
if (!strncmp(buf, "device", 6))
mode |= DWC3_GCTL_PRTCAP_DEVICE;
if (!strncmp(buf, "otg", 3))
mode |= DWC3_GCTL_PRTCAP_OTG;
if (mode) {
spin_lock_irqsave(&dwc->lock, flags);
dwc3_set_mode(dwc, mode);
spin_unlock_irqrestore(&dwc->lock, flags);
}
return count;
}
static const struct file_operations dwc3_mode_fops = {
.open = dwc3_mode_open,
.write = dwc3_mode_write,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static int dwc3_testmode_show(struct seq_file *s, void *unused)
{
struct dwc3 *dwc = s->private;
unsigned long flags;
u32 reg;
spin_lock_irqsave(&dwc->lock, flags);
reg = dwc3_readl(dwc->regs, DWC3_DCTL);
reg &= DWC3_DCTL_TSTCTRL_MASK;
reg >>= 1;
spin_unlock_irqrestore(&dwc->lock, flags);
switch (reg) {
case 0:
seq_printf(s, "no test\n");
break;
case TEST_J:
seq_printf(s, "test_j\n");
break;
case TEST_K:
seq_printf(s, "test_k\n");
break;
case TEST_SE0_NAK:
seq_printf(s, "test_se0_nak\n");
break;
case TEST_PACKET:
seq_printf(s, "test_packet\n");
break;
case TEST_FORCE_EN:
seq_printf(s, "test_force_enable\n");
break;
default:
seq_printf(s, "UNKNOWN %d\n", reg);
}
return 0;
}
static int dwc3_testmode_open(struct inode *inode, struct file *file)
{
return single_open(file, dwc3_testmode_show, inode->i_private);
}
static ssize_t dwc3_testmode_write(struct file *file,
const char __user *ubuf, size_t count, loff_t *ppos)
{
struct seq_file *s = file->private_data;
struct dwc3 *dwc = s->private;
unsigned long flags;
u32 testmode = 0;
char buf[32];
if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
return -EFAULT;
if (!strncmp(buf, "test_j", 6))
testmode = TEST_J;
else if (!strncmp(buf, "test_k", 6))
testmode = TEST_K;
else if (!strncmp(buf, "test_se0_nak", 12))
testmode = TEST_SE0_NAK;
else if (!strncmp(buf, "test_packet", 11))
testmode = TEST_PACKET;
else if (!strncmp(buf, "test_force_enable", 17))
testmode = TEST_FORCE_EN;
else
testmode = 0;
spin_lock_irqsave(&dwc->lock, flags);
dwc3_gadget_set_test_mode(dwc, testmode);
spin_unlock_irqrestore(&dwc->lock, flags);
return count;
}
static const struct file_operations dwc3_testmode_fops = {
.open = dwc3_testmode_open,
.write = dwc3_testmode_write,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static int dwc3_link_state_show(struct seq_file *s, void *unused)
{
struct dwc3 *dwc = s->private;
unsigned long flags;
enum dwc3_link_state state;
u32 reg;
spin_lock_irqsave(&dwc->lock, flags);
reg = dwc3_readl(dwc->regs, DWC3_DSTS);
state = DWC3_DSTS_USBLNKST(reg);
spin_unlock_irqrestore(&dwc->lock, flags);
switch (state) {
case DWC3_LINK_STATE_U0:
seq_printf(s, "U0\n");
break;
case DWC3_LINK_STATE_U1:
seq_printf(s, "U1\n");
break;
case DWC3_LINK_STATE_U2:
seq_printf(s, "U2\n");
break;
case DWC3_LINK_STATE_U3:
seq_printf(s, "U3\n");
break;
case DWC3_LINK_STATE_SS_DIS:
seq_printf(s, "SS.Disabled\n");
break;
case DWC3_LINK_STATE_RX_DET:
seq_printf(s, "Rx.Detect\n");
break;
case DWC3_LINK_STATE_SS_INACT:
seq_printf(s, "SS.Inactive\n");
break;
case DWC3_LINK_STATE_POLL:
seq_printf(s, "Poll\n");
break;
case DWC3_LINK_STATE_RECOV:
seq_printf(s, "Recovery\n");
break;
case DWC3_LINK_STATE_HRESET:
seq_printf(s, "HRESET\n");
break;
case DWC3_LINK_STATE_CMPLY:
seq_printf(s, "Compliance\n");
break;
case DWC3_LINK_STATE_LPBK:
seq_printf(s, "Loopback\n");
break;
M7350v5_en_gpl
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case DWC3_LINK_STATE_RESET:
seq_printf(s, "Reset\n");
break;
case DWC3_LINK_STATE_RESUME:
seq_printf(s, "Resume\n");
break;
M7350v1_en_gpl
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default:
M7350v5_en_gpl
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seq_printf(s, "UNKNOWN %d\n", state);
M7350v1_en_gpl
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}
return 0;
}
static int dwc3_link_state_open(struct inode *inode, struct file *file)
{
return single_open(file, dwc3_link_state_show, inode->i_private);
}
static ssize_t dwc3_link_state_write(struct file *file,
const char __user *ubuf, size_t count, loff_t *ppos)
{
struct seq_file *s = file->private_data;
struct dwc3 *dwc = s->private;
unsigned long flags;
enum dwc3_link_state state = 0;
char buf[32];
if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
return -EFAULT;
if (!strncmp(buf, "SS.Disabled", 11))
state = DWC3_LINK_STATE_SS_DIS;
else if (!strncmp(buf, "Rx.Detect", 9))
state = DWC3_LINK_STATE_RX_DET;
else if (!strncmp(buf, "SS.Inactive", 11))
state = DWC3_LINK_STATE_SS_INACT;
else if (!strncmp(buf, "Recovery", 8))
state = DWC3_LINK_STATE_RECOV;
else if (!strncmp(buf, "Compliance", 10))
state = DWC3_LINK_STATE_CMPLY;
else if (!strncmp(buf, "Loopback", 8))
state = DWC3_LINK_STATE_LPBK;
else
return -EINVAL;
spin_lock_irqsave(&dwc->lock, flags);
dwc3_gadget_set_link_state(dwc, state);
spin_unlock_irqrestore(&dwc->lock, flags);
return count;
}
static const struct file_operations dwc3_link_state_fops = {
.open = dwc3_link_state_open,
.write = dwc3_link_state_write,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static int ep_num;
static ssize_t dwc3_store_ep_num(struct file *file, const char __user *ubuf,
size_t count, loff_t *ppos)
{
struct seq_file *s = file->private_data;
struct dwc3 *dwc = s->private;
char kbuf[10];
unsigned int num, dir;
unsigned long flags;
memset(kbuf, 0, 10);
if (copy_from_user(kbuf, ubuf, count > 10 ? 10 : count))
return -EFAULT;
if (sscanf(kbuf, "%u %u", &num, &dir) != 2)
return -EINVAL;
spin_lock_irqsave(&dwc->lock, flags);
ep_num = (num << 1) + dir;
spin_unlock_irqrestore(&dwc->lock, flags);
return count;
}
static int dwc3_ep_req_list_show(struct seq_file *s, void *unused)
{
struct dwc3 *dwc = s->private;
struct dwc3_ep *dep;
struct dwc3_request *req = NULL;
struct list_head *ptr = NULL;
unsigned long flags;
spin_lock_irqsave(&dwc->lock, flags);
dep = dwc->eps[ep_num];
seq_printf(s, "%s request list: flags: 0x%x\n", dep->name, dep->flags);
list_for_each(ptr, &dep->request_list) {
req = list_entry(ptr, struct dwc3_request, list);
seq_printf(s,
"req:0x%p len: %d sts: %d dma:0x%pa num_sgs: %d\n",
req, req->request.length, req->request.status,
&req->request.dma, req->request.num_sgs);
}
spin_unlock_irqrestore(&dwc->lock, flags);
return 0;
}
static int dwc3_ep_req_list_open(struct inode *inode, struct file *file)
{
return single_open(file, dwc3_ep_req_list_show, inode->i_private);
}
static const struct file_operations dwc3_ep_req_list_fops = {
.open = dwc3_ep_req_list_open,
.write = dwc3_store_ep_num,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static int dwc3_ep_queued_req_show(struct seq_file *s, void *unused)
{
struct dwc3 *dwc = s->private;
struct dwc3_ep *dep;
struct dwc3_request *req = NULL;
struct list_head *ptr = NULL;
unsigned long flags;
spin_lock_irqsave(&dwc->lock, flags);
dep = dwc->eps[ep_num];
seq_printf(s, "%s queued reqs to HW: flags:0x%x\n", dep->name,
dep->flags);
list_for_each(ptr, &dep->req_queued) {
req = list_entry(ptr, struct dwc3_request, list);
seq_printf(s,
"req:0x%p len:%d sts:%d dma:%pa nsg:%d trb:0x%p\n",
req, req->request.length, req->request.status,
&req->request.dma, req->request.num_sgs, req->trb);
}
spin_unlock_irqrestore(&dwc->lock, flags);
return 0;
}
static int dwc3_ep_queued_req_open(struct inode *inode, struct file *file)
{
return single_open(file, dwc3_ep_queued_req_show, inode->i_private);
}
const struct file_operations dwc3_ep_req_queued_fops = {
.open = dwc3_ep_queued_req_open,
.write = dwc3_store_ep_num,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static int dwc3_ep_trbs_show(struct seq_file *s, void *unused)
{
struct dwc3 *dwc = s->private;
struct dwc3_ep *dep;
struct dwc3_trb *trb;
unsigned long flags;
int j;
if (!ep_num)
return 0;
spin_lock_irqsave(&dwc->lock, flags);
dep = dwc->eps[ep_num];
M7350v5_en_gpl
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if (!dep->trb_pool)
return 0;
M7350v1_en_gpl
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seq_printf(s, "%s trb pool: flags:0x%x freeslot:%d busyslot:%d\n",
dep->name, dep->flags, dep->free_slot, dep->busy_slot);
for (j = 0; j < DWC3_TRB_NUM; j++) {
trb = &dep->trb_pool[j];
seq_printf(s, "trb:0x%p bph:0x%x bpl:0x%x size:0x%x ctrl: %x\n",
trb, trb->bph, trb->bpl, trb->size, trb->ctrl);
}
spin_unlock_irqrestore(&dwc->lock, flags);
return 0;
}
static int dwc3_ep_trbs_list_open(struct inode *inode, struct file *file)
{
return single_open(file, dwc3_ep_trbs_show, inode->i_private);
}
const struct file_operations dwc3_ep_trb_list_fops = {
.open = dwc3_ep_trbs_list_open,
.write = dwc3_store_ep_num,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
M7350v5_en_gpl
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static unsigned int ep_addr_rxdbg_mask = 1;
M7350v1_en_gpl
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module_param(ep_addr_rxdbg_mask, uint, S_IRUGO | S_IWUSR);
M7350v5_en_gpl
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static unsigned int ep_addr_txdbg_mask = 1;
M7350v1_en_gpl
2024-09-09 08:52:07 +00:00
module_param(ep_addr_txdbg_mask, uint, S_IRUGO | S_IWUSR);
/* Maximum debug message length */
#define DBG_DATA_MSG 64UL
/* Maximum number of messages */
M7350v5_en_gpl
2024-09-09 08:57:42 +00:00
#define DBG_DATA_MAX 2048UL
M7350v1_en_gpl
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static struct {
char (buf[DBG_DATA_MAX])[DBG_DATA_MSG]; /* buffer */
unsigned idx; /* index */
unsigned tty; /* print to console? */
rwlock_t lck; /* lock */
} dbg_dwc3_data = {
.idx = 0,
.tty = 0,
.lck = __RW_LOCK_UNLOCKED(lck)
};
/**
* dbg_dec: decrements debug event index
* @idx: buffer index
*/
static inline void __maybe_unused dbg_dec(unsigned *idx)
{
*idx = (*idx - 1) % DBG_DATA_MAX;
}
/**
* dbg_inc: increments debug event index
* @idx: buffer index
*/
static inline void dbg_inc(unsigned *idx)
{
*idx = (*idx + 1) % DBG_DATA_MAX;
}
#define TIME_BUF_LEN 20
/*get_timestamp - returns time of day in us */
static char *get_timestamp(char *tbuf)
{
unsigned long long t;
unsigned long nanosec_rem;
t = cpu_clock(smp_processor_id());
nanosec_rem = do_div(t, 1000000000)/1000;
scnprintf(tbuf, TIME_BUF_LEN, "[%5lu.%06lu] ", (unsigned long)t,
nanosec_rem);
return tbuf;
}
static int allow_dbg_print(u8 ep_num)
{
int dir, num;
/* allow bus wide events */
if (ep_num == 0xff)
return 1;
dir = ep_num & 0x1;
num = ep_num >> 1;
num = 1 << num;
if (dir && (num & ep_addr_txdbg_mask))
return 1;
if (!dir && (num & ep_addr_rxdbg_mask))
return 1;
return 0;
}
/**
* dbg_print: prints the common part of the event
* @addr: endpoint address
* @name: event name
* @status: status
* @extra: extra information
*/
void dbg_print(u8 ep_num, const char *name, int status, const char *extra)
{
unsigned long flags;
char tbuf[TIME_BUF_LEN];
if (!allow_dbg_print(ep_num))
return;
write_lock_irqsave(&dbg_dwc3_data.lck, flags);
scnprintf(dbg_dwc3_data.buf[dbg_dwc3_data.idx], DBG_DATA_MSG,
M7350v5_en_gpl
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"%s\t? %02X %-12.12s %4i ?\t%s\n",
M7350v1_en_gpl
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get_timestamp(tbuf), ep_num, name, status, extra);
dbg_inc(&dbg_dwc3_data.idx);
write_unlock_irqrestore(&dbg_dwc3_data.lck, flags);
if (dbg_dwc3_data.tty != 0)
pr_notice("%s\t? %02X %-7.7s %4i ?\t%s\n",
get_timestamp(tbuf), ep_num, name, status, extra);
}
/**
* dbg_done: prints a DONE event
* @addr: endpoint address
* @td: transfer descriptor
* @status: status
*/
void dbg_done(u8 ep_num, const u32 count, int status)
{
char msg[DBG_DATA_MSG];
if (!allow_dbg_print(ep_num))
return;
scnprintf(msg, sizeof(msg), "%d", count);
dbg_print(ep_num, "DONE", status, msg);
}
/**
* dbg_event: prints a generic event
* @addr: endpoint address
* @name: event name
* @status: status
*/
void dbg_event(u8 ep_num, const char *name, int status)
{
if (!allow_dbg_print(ep_num))
return;
if (name != NULL)
dbg_print(ep_num, name, status, "");
}
/*
* dbg_queue: prints a QUEUE event
* @addr: endpoint address
* @req: USB request
* @status: status
*/
void dbg_queue(u8 ep_num, const struct usb_request *req, int status)
{
char msg[DBG_DATA_MSG];
if (!allow_dbg_print(ep_num))
return;
if (req != NULL) {
scnprintf(msg, sizeof(msg),
"%d %d", !req->no_interrupt, req->length);
dbg_print(ep_num, "QUEUE", status, msg);
}
}
/**
* dbg_setup: prints a SETUP event
* @addr: endpoint address
* @req: setup request
*/
void dbg_setup(u8 ep_num, const struct usb_ctrlrequest *req)
{
char msg[DBG_DATA_MSG];
if (!allow_dbg_print(ep_num))
return;
if (req != NULL) {
scnprintf(msg, sizeof(msg),
"%02X %02X %04X %04X %d", req->bRequestType,
req->bRequest, le16_to_cpu(req->wValue),
le16_to_cpu(req->wIndex), le16_to_cpu(req->wLength));
dbg_print(ep_num, "SETUP", 0, msg);
}
}
M7350v5_en_gpl
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/**
* dbg_print_reg: prints a reg value
* @name: reg name
* @reg: reg value to be printed
*/
void dbg_print_reg(const char *name, int reg)
{
unsigned long flags;
write_lock_irqsave(&dbg_dwc3_data.lck, flags);
scnprintf(dbg_dwc3_data.buf[dbg_dwc3_data.idx], DBG_DATA_MSG,
"%s = 0x%08x\n", name, reg);
dbg_inc(&dbg_dwc3_data.idx);
write_unlock_irqrestore(&dbg_dwc3_data.lck, flags);
if (dbg_dwc3_data.tty != 0)
pr_notice("%s = 0x%08x\n", name, reg);
}
M7350v1_en_gpl
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/**
* store_events: configure if events are going to be also printed to console
*
*/
static ssize_t dwc3_store_events(struct file *file,
const char __user *buf, size_t count, loff_t *ppos)
{
unsigned tty;
if (buf == NULL) {
pr_err("[%s] EINVAL\n", __func__);
goto done;
}
if (sscanf(buf, "%u", &tty) != 1 || tty > 1) {
pr_err("<1|0>: enable|disable console log\n");
goto done;
}
dbg_dwc3_data.tty = tty;
pr_info("tty = %u", dbg_dwc3_data.tty);
done:
return count;
}
static int dwc3_gadget_data_events_show(struct seq_file *s, void *unused)
{
unsigned long flags;
unsigned i;
read_lock_irqsave(&dbg_dwc3_data.lck, flags);
i = dbg_dwc3_data.idx;
if (strnlen(dbg_dwc3_data.buf[i], DBG_DATA_MSG))
seq_printf(s, "%s\n", dbg_dwc3_data.buf[i]);
for (dbg_inc(&i); i != dbg_dwc3_data.idx; dbg_inc(&i)) {
if (!strnlen(dbg_dwc3_data.buf[i], DBG_DATA_MSG))
continue;
seq_printf(s, "%s\n", dbg_dwc3_data.buf[i]);
}
read_unlock_irqrestore(&dbg_dwc3_data.lck, flags);
return 0;
}
static int dwc3_gadget_data_events_open(struct inode *inode, struct file *f)
{
return single_open(f, dwc3_gadget_data_events_show, inode->i_private);
}
const struct file_operations dwc3_gadget_dbg_data_fops = {
.open = dwc3_gadget_data_events_open,
.read = seq_read,
.write = dwc3_store_events,
.llseek = seq_lseek,
.release = single_release,
};
M7350v5_en_gpl
2024-09-09 08:57:42 +00:00
static ssize_t dwc3_store_int_events(struct file *file,
const char __user *ubuf, size_t count, loff_t *ppos)
{
int clear_stats, i;
unsigned long flags;
struct seq_file *s = file->private_data;
struct dwc3 *dwc = s->private;
struct dwc3_ep *dep;
struct timespec ts;
if (ubuf == NULL) {
pr_err("[%s] EINVAL\n", __func__);
goto done;
}
if (sscanf(ubuf, "%u", &clear_stats) != 1 || clear_stats != 0) {
pr_err("Wrong value. To clear stats, enter value as 0.\n");
goto done;
}
spin_lock_irqsave(&dwc->lock, flags);
pr_debug("%s(): clearing debug interrupt buffers\n", __func__);
ts = current_kernel_time();
for (i = 0; i < DWC3_ENDPOINTS_NUM; i++) {
dep = dwc->eps[i];
memset(&dep->dbg_ep_events, 0, sizeof(dep->dbg_ep_events));
memset(&dep->dbg_ep_events_diff, 0, sizeof(dep->dbg_ep_events));
dep->dbg_ep_events_ts = ts;
}
memset(&dwc->dbg_gadget_events, 0, sizeof(dwc->dbg_gadget_events));
spin_unlock_irqrestore(&dwc->lock, flags);
done:
return count;
}
static int dwc3_gadget_int_events_show(struct seq_file *s, void *unused)
{
unsigned long flags;
struct dwc3 *dwc = s->private;
struct dwc3_gadget_events *dbg_gadget_events;
struct dwc3_ep *dep;
int i;
struct timespec ts_delta;
struct timespec ts_current;
u32 ts_delta_ms;
spin_lock_irqsave(&dwc->lock, flags);
dbg_gadget_events = &dwc->dbg_gadget_events;
for (i = 0; i < DWC3_ENDPOINTS_NUM; i++) {
dep = dwc->eps[i];
if (dep == NULL || !(dep->flags & DWC3_EP_ENABLED))
continue;
ts_current = current_kernel_time();
ts_delta = timespec_sub(ts_current, dep->dbg_ep_events_ts);
ts_delta_ms = ts_delta.tv_nsec / NSEC_PER_MSEC +
ts_delta.tv_sec * MSEC_PER_SEC;
seq_printf(s, "\n\n===== dbg_ep_events for EP(%d) %s =====\n",
i, dep->name);
seq_printf(s, "xfercomplete:%u @ %luHz\n",
dep->dbg_ep_events.xfercomplete,
ep_event_rate(xfercomplete, dep->dbg_ep_events,
dep->dbg_ep_events_diff, ts_delta_ms));
seq_printf(s, "xfernotready:%u @ %luHz\n",
dep->dbg_ep_events.xfernotready,
ep_event_rate(xfernotready, dep->dbg_ep_events,
dep->dbg_ep_events_diff, ts_delta_ms));
seq_printf(s, "control_data:%u @ %luHz\n",
dep->dbg_ep_events.control_data,
ep_event_rate(control_data, dep->dbg_ep_events,
dep->dbg_ep_events_diff, ts_delta_ms));
seq_printf(s, "control_status:%u @ %luHz\n",
dep->dbg_ep_events.control_status,
ep_event_rate(control_status, dep->dbg_ep_events,
dep->dbg_ep_events_diff, ts_delta_ms));
seq_printf(s, "xferinprogress:%u @ %luHz\n",
dep->dbg_ep_events.xferinprogress,
ep_event_rate(xferinprogress, dep->dbg_ep_events,
dep->dbg_ep_events_diff, ts_delta_ms));
seq_printf(s, "rxtxfifoevent:%u @ %luHz\n",
dep->dbg_ep_events.rxtxfifoevent,
ep_event_rate(rxtxfifoevent, dep->dbg_ep_events,
dep->dbg_ep_events_diff, ts_delta_ms));
seq_printf(s, "streamevent:%u @ %luHz\n",
dep->dbg_ep_events.streamevent,
ep_event_rate(streamevent, dep->dbg_ep_events,
dep->dbg_ep_events_diff, ts_delta_ms));
seq_printf(s, "epcmdcomplt:%u @ %luHz\n",
dep->dbg_ep_events.epcmdcomplete,
ep_event_rate(epcmdcomplete, dep->dbg_ep_events,
dep->dbg_ep_events_diff, ts_delta_ms));
seq_printf(s, "cmdcmplt:%u @ %luHz\n",
dep->dbg_ep_events.cmdcmplt,
ep_event_rate(cmdcmplt, dep->dbg_ep_events,
dep->dbg_ep_events_diff, ts_delta_ms));
seq_printf(s, "unknown:%u @ %luHz\n",
dep->dbg_ep_events.unknown_event,
ep_event_rate(unknown_event, dep->dbg_ep_events,
dep->dbg_ep_events_diff, ts_delta_ms));
seq_printf(s, "total:%u @ %luHz\n",
dep->dbg_ep_events.total,
ep_event_rate(total, dep->dbg_ep_events,
dep->dbg_ep_events_diff, ts_delta_ms));
dep->dbg_ep_events_ts = ts_current;
dep->dbg_ep_events_diff = dep->dbg_ep_events;
}
seq_puts(s, "\n=== dbg_gadget events ==\n");
seq_printf(s, "disconnect:%u\n reset:%u\n",
dbg_gadget_events->disconnect, dbg_gadget_events->reset);
seq_printf(s, "connect:%u\n wakeup:%u\n",
dbg_gadget_events->connect, dbg_gadget_events->wakeup);
seq_printf(s, "link_status_change:%u\n eopf:%u\n",
dbg_gadget_events->link_status_change, dbg_gadget_events->eopf);
seq_printf(s, "sof:%u\n suspend:%u\n",
dbg_gadget_events->sof, dbg_gadget_events->suspend);
seq_printf(s, "erratic_error:%u\n overflow:%u\n",
dbg_gadget_events->erratic_error,
dbg_gadget_events->overflow);
seq_printf(s, "vendor_dev_test_lmp:%u\n cmdcmplt:%u\n",
dbg_gadget_events->vendor_dev_test_lmp,
dbg_gadget_events->cmdcmplt);
seq_printf(s, "unknown_event:%u\n", dbg_gadget_events->unknown_event);
seq_printf(s, "\n\t== Last %d interrupts stats ==\t\n", MAX_INTR_STATS);
seq_puts(s, "@ time (us):\t");
for (i = 0; i < MAX_INTR_STATS; i++)
seq_printf(s, "%lld\t", ktime_to_us(dwc->irq_start_time[i]));
seq_puts(s, "\nhard irq time (us):\t");
for (i = 0; i < MAX_INTR_STATS; i++)
seq_printf(s, "%d\t", dwc->irq_completion_time[i]);
seq_puts(s, "\nevents count:\t\t");
for (i = 0; i < MAX_INTR_STATS; i++)
seq_printf(s, "%d\t", dwc->irq_event_count[i]);
seq_puts(s, "\nbh handled count:\t");
for (i = 0; i < MAX_INTR_STATS; i++)
seq_printf(s, "%d\t", dwc->bh_handled_evt_cnt[i]);
seq_puts(s, "\nirq thread time (us):\t");
for (i = 0; i < MAX_INTR_STATS; i++)
seq_printf(s, "%d\t", dwc->bh_completion_time[i]);
seq_putc(s, '\n');
seq_printf(s, "t_pwr evt irq : %lld\t",
ktime_to_us(dwc->t_pwr_evt_irq));
spin_unlock_irqrestore(&dwc->lock, flags);
return 0;
}
static int dwc3_gadget_events_open(struct inode *inode, struct file *f)
{
return single_open(f, dwc3_gadget_int_events_show, inode->i_private);
}
const struct file_operations dwc3_gadget_dbg_events_fops = {
.open = dwc3_gadget_events_open,
.read = seq_read,
.write = dwc3_store_int_events,
.llseek = seq_lseek,
.release = single_release,
};
int dwc3_debugfs_init(struct dwc3 *dwc)
M7350v1_en_gpl
2024-09-09 08:52:07 +00:00
{
struct dentry *root;
struct dentry *file;
int ret;
root = debugfs_create_dir(dev_name(dwc->dev), NULL);
if (!root) {
ret = -ENOMEM;
goto err0;
}
dwc->root = root;
M7350v5_en_gpl
2024-09-09 08:57:42 +00:00
dwc->regset = kzalloc(sizeof(*dwc->regset), GFP_KERNEL);
if (!dwc->regset) {
M7350v1_en_gpl
2024-09-09 08:52:07 +00:00
ret = -ENOMEM;
goto err1;
}
M7350v5_en_gpl
2024-09-09 08:57:42 +00:00
dwc->regset->regs = dwc3_regs;
dwc->regset->nregs = ARRAY_SIZE(dwc3_regs);
dwc->regset->base = dwc->regs;
file = debugfs_create_regset32("regdump", S_IRUGO, root, dwc->regset);
M7350v1_en_gpl
2024-09-09 08:52:07 +00:00
if (!file) {
ret = -ENOMEM;
goto err1;
}
M7350v5_en_gpl
2024-09-09 08:57:42 +00:00
if (IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE)) {
file = debugfs_create_file("mode", S_IRUGO | S_IWUSR, root,
dwc, &dwc3_mode_fops);
if (!file) {
ret = -ENOMEM;
goto err1;
}
M7350v1_en_gpl
2024-09-09 08:52:07 +00:00
}
M7350v5_en_gpl
2024-09-09 08:57:42 +00:00
if (IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE) ||
IS_ENABLED(CONFIG_USB_DWC3_GADGET)) {
file = debugfs_create_file("testmode", S_IRUGO | S_IWUSR, root,
dwc, &dwc3_testmode_fops);
if (!file) {
ret = -ENOMEM;
goto err1;
}
file = debugfs_create_file("link_state", S_IRUGO | S_IWUSR, root,
dwc, &dwc3_link_state_fops);
if (!file) {
ret = -ENOMEM;
goto err1;
}
M7350v1_en_gpl
2024-09-09 08:52:07 +00:00
}
file = debugfs_create_file("trbs", S_IRUGO | S_IWUSR, root,
dwc, &dwc3_ep_trb_list_fops);
if (!file) {
ret = -ENOMEM;
goto err1;
}
file = debugfs_create_file("requests", S_IRUGO | S_IWUSR, root,
dwc, &dwc3_ep_req_list_fops);
if (!file) {
ret = -ENOMEM;
goto err1;
}
file = debugfs_create_file("queued_reqs", S_IRUGO | S_IWUSR, root,
dwc, &dwc3_ep_req_queued_fops);
if (!file) {
ret = -ENOMEM;
goto err1;
}
file = debugfs_create_file("events", S_IRUGO | S_IWUSR, root,
dwc, &dwc3_gadget_dbg_data_fops);
if (!file) {
ret = -ENOMEM;
goto err1;
}
M7350v5_en_gpl
2024-09-09 08:57:42 +00:00
file = debugfs_create_file("int_events", S_IRUGO | S_IWUSR, root,
dwc, &dwc3_gadget_dbg_events_fops);
if (!file) {
ret = -ENOMEM;
goto err1;
}
M7350v1_en_gpl
2024-09-09 08:52:07 +00:00
return 0;
err1:
debugfs_remove_recursive(root);
err0:
return ret;
}
M7350v5_en_gpl
2024-09-09 08:57:42 +00:00
void dwc3_debugfs_exit(struct dwc3 *dwc)
M7350v1_en_gpl
2024-09-09 08:52:07 +00:00
{
debugfs_remove_recursive(dwc->root);
dwc->root = NULL;
}
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