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linux/drivers/usb/dwc3/debugfs.c
Felipe Balbi 2eb8801650 usb: dwc3: gadget: add a pointer to endpoint registers 
By adding a pointer to endpoint registers' base
address, we can avoid using our controller-wide
struct dwc3 pointer for everything. At some point
this will allow us to have per-endpoint locks which
will, in turn, let us queue requests to separate
endpoints in parallel.

Because of this change our debugfs interface and io
accessors need to be changed accordingly.

Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2016-06-20 12:32:35 +03:00

900 lines
22 KiB
C
Raw Blame History

/**
* 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, \
}
#define dump_ep_register_set(n) \
{ \
.name = "DEPCMDPAR2("__stringify(n)")", \
.offset = DWC3_DEP_BASE(n) + \
DWC3_DEPCMDPAR2, \
}, \
{ \
.name = "DEPCMDPAR1("__stringify(n)")", \
.offset = DWC3_DEP_BASE(n) + \
DWC3_DEPCMDPAR1, \
}, \
{ \
.name = "DEPCMDPAR0("__stringify(n)")", \
.offset = DWC3_DEP_BASE(n) + \
DWC3_DEPCMDPAR0, \
}, \
{ \
.name = "DEPCMD("__stringify(n)")", \
.offset = DWC3_DEP_BASE(n) + \
DWC3_DEPCMD, \
}
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_ep_register_set(0),
dump_ep_register_set(1),
dump_ep_register_set(2),
dump_ep_register_set(3),
dump_ep_register_set(4),
dump_ep_register_set(5),
dump_ep_register_set(6),
dump_ep_register_set(7),
dump_ep_register_set(8),
dump_ep_register_set(9),
dump_ep_register_set(10),
dump_ep_register_set(11),
dump_ep_register_set(12),
dump_ep_register_set(13),
dump_ep_register_set(14),
dump_ep_register_set(15),
dump_ep_register_set(16),
dump_ep_register_set(17),
dump_ep_register_set(18),
dump_ep_register_set(19),
dump_ep_register_set(20),
dump_ep_register_set(21),
dump_ep_register_set(22),
dump_ep_register_set(23),
dump_ep_register_set(24),
dump_ep_register_set(25),
dump_ep_register_set(26),
dump_ep_register_set(27),
dump_ep_register_set(28),
dump_ep_register_set(29),
dump_ep_register_set(30),
dump_ep_register_set(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);
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;
case DWC3_LINK_STATE_RESET:
seq_printf(s, "Reset\n");
break;
case DWC3_LINK_STATE_RESUME:
seq_printf(s, "Resume\n");
break;
default:
seq_printf(s, "UNKNOWN %d\n", state);
}
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,
};
struct dwc3_ep_file_map {
char name[25];
int (*show)(struct seq_file *s, void *unused);
};
static int dwc3_tx_fifo_queue_show(struct seq_file *s, void *unused)
{
struct dwc3_ep *dep = s->private;
struct dwc3 *dwc = dep->dwc;
unsigned long flags;
u32 val;
spin_lock_irqsave(&dwc->lock, flags);
val = dwc3_core_fifo_space(dep, DWC3_TXFIFOQ);
seq_printf(s, "%u\n", val);
spin_unlock_irqrestore(&dwc->lock, flags);
return 0;
}
static int dwc3_rx_fifo_queue_show(struct seq_file *s, void *unused)
{
struct dwc3_ep *dep = s->private;
struct dwc3 *dwc = dep->dwc;
unsigned long flags;
u32 val;
spin_lock_irqsave(&dwc->lock, flags);
val = dwc3_core_fifo_space(dep, DWC3_RXFIFOQ);
seq_printf(s, "%u\n", val);
spin_unlock_irqrestore(&dwc->lock, flags);
return 0;
}
static int dwc3_tx_request_queue_show(struct seq_file *s, void *unused)
{
struct dwc3_ep *dep = s->private;
struct dwc3 *dwc = dep->dwc;
unsigned long flags;
u32 val;
spin_lock_irqsave(&dwc->lock, flags);
val = dwc3_core_fifo_space(dep, DWC3_TXREQQ);
seq_printf(s, "%u\n", val);
spin_unlock_irqrestore(&dwc->lock, flags);
return 0;
}
static int dwc3_rx_request_queue_show(struct seq_file *s, void *unused)
{
struct dwc3_ep *dep = s->private;
struct dwc3 *dwc = dep->dwc;
unsigned long flags;
u32 val;
spin_lock_irqsave(&dwc->lock, flags);
val = dwc3_core_fifo_space(dep, DWC3_RXREQQ);
seq_printf(s, "%u\n", val);
spin_unlock_irqrestore(&dwc->lock, flags);
return 0;
}
static int dwc3_rx_info_queue_show(struct seq_file *s, void *unused)
{
struct dwc3_ep *dep = s->private;
struct dwc3 *dwc = dep->dwc;
unsigned long flags;
u32 val;
spin_lock_irqsave(&dwc->lock, flags);
val = dwc3_core_fifo_space(dep, DWC3_RXINFOQ);
seq_printf(s, "%u\n", val);
spin_unlock_irqrestore(&dwc->lock, flags);
return 0;
}
static int dwc3_descriptor_fetch_queue_show(struct seq_file *s, void *unused)
{
struct dwc3_ep *dep = s->private;
struct dwc3 *dwc = dep->dwc;
unsigned long flags;
u32 val;
spin_lock_irqsave(&dwc->lock, flags);
val = dwc3_core_fifo_space(dep, DWC3_DESCFETCHQ);
seq_printf(s, "%u\n", val);
spin_unlock_irqrestore(&dwc->lock, flags);
return 0;
}
static int dwc3_event_queue_show(struct seq_file *s, void *unused)
{
struct dwc3_ep *dep = s->private;
struct dwc3 *dwc = dep->dwc;
unsigned long flags;
u32 val;
spin_lock_irqsave(&dwc->lock, flags);
val = dwc3_core_fifo_space(dep, DWC3_EVENTQ);
seq_printf(s, "%u\n", val);
spin_unlock_irqrestore(&dwc->lock, flags);
return 0;
}
static int dwc3_ep_transfer_type_show(struct seq_file *s, void *unused)
{
struct dwc3_ep *dep = s->private;
struct dwc3 *dwc = dep->dwc;
unsigned long flags;
spin_lock_irqsave(&dwc->lock, flags);
if (!(dep->flags & DWC3_EP_ENABLED) ||
!dep->endpoint.desc) {
seq_printf(s, "--\n");
goto out;
}
switch (usb_endpoint_type(dep->endpoint.desc)) {
case USB_ENDPOINT_XFER_CONTROL:
seq_printf(s, "control\n");
break;
case USB_ENDPOINT_XFER_ISOC:
seq_printf(s, "isochronous\n");
break;
case USB_ENDPOINT_XFER_BULK:
seq_printf(s, "bulk\n");
break;
case USB_ENDPOINT_XFER_INT:
seq_printf(s, "interrupt\n");
break;
default:
seq_printf(s, "--\n");
}
out:
spin_unlock_irqrestore(&dwc->lock, flags);
return 0;
}
static inline const char *dwc3_trb_type_string(struct dwc3_trb *trb)
{
switch (DWC3_TRBCTL_TYPE(trb->ctrl)) {
case DWC3_TRBCTL_NORMAL:
return "normal";
case DWC3_TRBCTL_CONTROL_SETUP:
return "control-setup";
case DWC3_TRBCTL_CONTROL_STATUS2:
return "control-status2";
case DWC3_TRBCTL_CONTROL_STATUS3:
return "control-status3";
case DWC3_TRBCTL_CONTROL_DATA:
return "control-data";
case DWC3_TRBCTL_ISOCHRONOUS_FIRST:
return "isoc-first";
case DWC3_TRBCTL_ISOCHRONOUS:
return "isoc";
case DWC3_TRBCTL_LINK_TRB:
return "link";
default:
return "UNKNOWN";
}
}
static int dwc3_ep_trb_ring_show(struct seq_file *s, void *unused)
{
struct dwc3_ep *dep = s->private;
struct dwc3 *dwc = dep->dwc;
unsigned long flags;
int i;
spin_lock_irqsave(&dwc->lock, flags);
if (dep->number <= 1) {
seq_printf(s, "--\n");
goto out;
}
seq_printf(s, "enqueue pointer %d\n", dep->trb_enqueue);
seq_printf(s, "dequeue pointer %d\n", dep->trb_dequeue);
seq_printf(s, "\n--------------------------------------------------\n\n");
seq_printf(s, "buffer_addr,size,type,ioc,isp_imi,csp,chn,lst,hwo\n");
for (i = 0; i < DWC3_TRB_NUM; i++) {
struct dwc3_trb *trb = &dep->trb_pool[i];
seq_printf(s, "%08x%08x,%d,%s,%d,%d,%d,%d,%d,%d\n",
trb->bph, trb->bpl, trb->size,
dwc3_trb_type_string(trb),
!!(trb->ctrl & DWC3_TRB_CTRL_IOC),
!!(trb->ctrl & DWC3_TRB_CTRL_ISP_IMI),
!!(trb->ctrl & DWC3_TRB_CTRL_CSP),
!!(trb->ctrl & DWC3_TRB_CTRL_CHN),
!!(trb->ctrl & DWC3_TRB_CTRL_LST),
!!(trb->ctrl & DWC3_TRB_CTRL_HWO));
}
out:
spin_unlock_irqrestore(&dwc->lock, flags);
return 0;
}
static struct dwc3_ep_file_map map[] = {
{ "tx_fifo_queue", dwc3_tx_fifo_queue_show, },
{ "rx_fifo_queue", dwc3_rx_fifo_queue_show, },
{ "tx_request_queue", dwc3_tx_request_queue_show, },
{ "rx_request_queue", dwc3_rx_request_queue_show, },
{ "rx_info_queue", dwc3_rx_info_queue_show, },
{ "descriptor_fetch_queue", dwc3_descriptor_fetch_queue_show, },
{ "event_queue", dwc3_event_queue_show, },
{ "transfer_type", dwc3_ep_transfer_type_show, },
{ "trb_ring", dwc3_ep_trb_ring_show, },
};
static int dwc3_endpoint_open(struct inode *inode, struct file *file)
{
const char *file_name = file_dentry(file)->d_iname;
struct dwc3_ep_file_map *f_map;
int i;
for (i = 0; i < ARRAY_SIZE(map); i++) {
f_map = &map[i];
if (strcmp(f_map->name, file_name) == 0)
break;
}
return single_open(file, f_map->show, inode->i_private);
}
static const struct file_operations dwc3_endpoint_fops = {
.open = dwc3_endpoint_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static void dwc3_debugfs_create_endpoint_file(struct dwc3_ep *dep,
struct dentry *parent, int type)
{
struct dentry *file;
struct dwc3_ep_file_map *ep_file = &map[type];
file = debugfs_create_file(ep_file->name, S_IRUGO, parent, dep,
&dwc3_endpoint_fops);
}
static void dwc3_debugfs_create_endpoint_files(struct dwc3_ep *dep,
struct dentry *parent)
{
int i;
for (i = 0; i < ARRAY_SIZE(map); i++)
dwc3_debugfs_create_endpoint_file(dep, parent, i);
}
static void dwc3_debugfs_create_endpoint_dir(struct dwc3_ep *dep,
struct dentry *parent)
{
struct dentry *dir;
dir = debugfs_create_dir(dep->name, parent);
if (IS_ERR_OR_NULL(dir))
return;
dwc3_debugfs_create_endpoint_files(dep, dir);
}
static void dwc3_debugfs_create_endpoint_dirs(struct dwc3 *dwc,
struct dentry *parent)
{
int i;
for (i = 0; i < dwc->num_in_eps; i++) {
u8 epnum = (i << 1) | 1;
struct dwc3_ep *dep = dwc->eps[epnum];
if (!dep)
continue;
dwc3_debugfs_create_endpoint_dir(dep, parent);
}
for (i = 0; i < dwc->num_out_eps; i++) {
u8 epnum = (i << 1);
struct dwc3_ep *dep = dwc->eps[epnum];
if (!dep)
continue;
dwc3_debugfs_create_endpoint_dir(dep, parent);
}
}
void dwc3_debugfs_init(struct dwc3 *dwc)
{
struct dentry *root;
struct dentry *file;
root = debugfs_create_dir(dev_name(dwc->dev), NULL);
if (IS_ERR_OR_NULL(root)) {
if (!root)
dev_err(dwc->dev, "Can't create debugfs root\n");
return;
}
dwc->root = root;
dwc->regset = kzalloc(sizeof(*dwc->regset), GFP_KERNEL);
if (!dwc->regset) {
debugfs_remove_recursive(root);
return;
}
dwc->regset->regs = dwc3_regs;
dwc->regset->nregs = ARRAY_SIZE(dwc3_regs);
dwc->regset->base = dwc->regs - DWC3_GLOBALS_REGS_START;
file = debugfs_create_regset32("regdump", S_IRUGO, root, dwc->regset);
if (!file)
dev_dbg(dwc->dev, "Can't create debugfs regdump\n");
if (IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE)) {
file = debugfs_create_file("mode", S_IRUGO | S_IWUSR, root,
dwc, &dwc3_mode_fops);
if (!file)
dev_dbg(dwc->dev, "Can't create debugfs mode\n");
}
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)
dev_dbg(dwc->dev, "Can't create debugfs testmode\n");
file = debugfs_create_file("link_state", S_IRUGO | S_IWUSR,
root, dwc, &dwc3_link_state_fops);
if (!file)
dev_dbg(dwc->dev, "Can't create debugfs link_state\n");
dwc3_debugfs_create_endpoint_dirs(dwc, root);
}
}
void dwc3_debugfs_exit(struct dwc3 *dwc)
{
debugfs_remove_recursive(dwc->root);
kfree(dwc->regset);
}
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