/** * 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> * * 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. * * 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. */ #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,	\} 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),	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),	dump_register(OEVT),	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); 

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