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linuxdebug/drivers/usb/dwc2/debugfs.c

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null pointer error
2024-07-16 15:50:57 +02:00
// SPDX-License-Identifier: GPL-2.0
/*
* debugfs.c - Designware USB2 DRD controller debugfs
*
* Copyright (C) 2015 Intel Corporation
* Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
*/
#include <linux/spinlock.h>
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include <linux/uaccess.h>
#include "core.h"
#include "debug.h"
#if IS_ENABLED(CONFIG_USB_DWC2_PERIPHERAL) || \
IS_ENABLED(CONFIG_USB_DWC2_DUAL_ROLE)
/**
* testmode_write() - change usb test mode state.
* @file: The file to write to.
* @ubuf: The buffer where user wrote.
* @count: The ubuf size.
* @ppos: Unused parameter.
*/
static ssize_t testmode_write(struct file *file, const char __user *ubuf, size_t
count, loff_t *ppos)
{
struct seq_file *s = file->private_data;
struct dwc2_hsotg *hsotg = 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 = USB_TEST_J;
else if (!strncmp(buf, "test_k", 6))
testmode = USB_TEST_K;
else if (!strncmp(buf, "test_se0_nak", 12))
testmode = USB_TEST_SE0_NAK;
else if (!strncmp(buf, "test_packet", 11))
testmode = USB_TEST_PACKET;
else if (!strncmp(buf, "test_force_enable", 17))
testmode = USB_TEST_FORCE_ENABLE;
else
testmode = 0;
spin_lock_irqsave(&hsotg->lock, flags);
dwc2_hsotg_set_test_mode(hsotg, testmode);
spin_unlock_irqrestore(&hsotg->lock, flags);
return count;
}
/**
* testmode_show() - debugfs: show usb test mode state
* @s: The seq file to write to.
* @unused: Unused parameter.
*
* This debugfs entry shows which usb test mode is currently enabled.
*/
static int testmode_show(struct seq_file *s, void *unused)
{
struct dwc2_hsotg *hsotg = s->private;
unsigned long flags;
int dctl;
spin_lock_irqsave(&hsotg->lock, flags);
dctl = dwc2_readl(hsotg, DCTL);
dctl &= DCTL_TSTCTL_MASK;
dctl >>= DCTL_TSTCTL_SHIFT;
spin_unlock_irqrestore(&hsotg->lock, flags);
switch (dctl) {
case 0:
seq_puts(s, "no test\n");
break;
case USB_TEST_J:
seq_puts(s, "test_j\n");
break;
case USB_TEST_K:
seq_puts(s, "test_k\n");
break;
case USB_TEST_SE0_NAK:
seq_puts(s, "test_se0_nak\n");
break;
case USB_TEST_PACKET:
seq_puts(s, "test_packet\n");
break;
case USB_TEST_FORCE_ENABLE:
seq_puts(s, "test_force_enable\n");
break;
default:
seq_printf(s, "UNKNOWN %d\n", dctl);
}
return 0;
}
static int testmode_open(struct inode *inode, struct file *file)
{
return single_open(file, testmode_show, inode->i_private);
}
static const struct file_operations testmode_fops = {
.owner = THIS_MODULE,
.open = testmode_open,
.write = testmode_write,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
/**
* state_show - debugfs: show overall driver and device state.
* @seq: The seq file to write to.
* @v: Unused parameter.
*
* This debugfs entry shows the overall state of the hardware and
* some general information about each of the endpoints available
* to the system.
*/
static int state_show(struct seq_file *seq, void *v)
{
struct dwc2_hsotg *hsotg = seq->private;
int idx;
seq_printf(seq, "DCFG=0x%08x, DCTL=0x%08x, DSTS=0x%08x\n",
dwc2_readl(hsotg, DCFG),
dwc2_readl(hsotg, DCTL),
dwc2_readl(hsotg, DSTS));
seq_printf(seq, "DIEPMSK=0x%08x, DOEPMASK=0x%08x\n",
dwc2_readl(hsotg, DIEPMSK), dwc2_readl(hsotg, DOEPMSK));
seq_printf(seq, "GINTMSK=0x%08x, GINTSTS=0x%08x\n",
dwc2_readl(hsotg, GINTMSK),
dwc2_readl(hsotg, GINTSTS));
seq_printf(seq, "DAINTMSK=0x%08x, DAINT=0x%08x\n",
dwc2_readl(hsotg, DAINTMSK),
dwc2_readl(hsotg, DAINT));
seq_printf(seq, "GNPTXSTS=0x%08x, GRXSTSR=%08x\n",
dwc2_readl(hsotg, GNPTXSTS),
dwc2_readl(hsotg, GRXSTSR));
seq_puts(seq, "\nEndpoint status:\n");
for (idx = 0; idx < hsotg->num_of_eps; idx++) {
u32 in, out;
in = dwc2_readl(hsotg, DIEPCTL(idx));
out = dwc2_readl(hsotg, DOEPCTL(idx));
seq_printf(seq, "ep%d: DIEPCTL=0x%08x, DOEPCTL=0x%08x",
idx, in, out);
in = dwc2_readl(hsotg, DIEPTSIZ(idx));
out = dwc2_readl(hsotg, DOEPTSIZ(idx));
seq_printf(seq, ", DIEPTSIZ=0x%08x, DOEPTSIZ=0x%08x",
in, out);
seq_puts(seq, "\n");
}
return 0;
}
DEFINE_SHOW_ATTRIBUTE(state);
/**
* fifo_show - debugfs: show the fifo information
* @seq: The seq_file to write data to.
* @v: Unused parameter.
*
* Show the FIFO information for the overall fifo and all the
* periodic transmission FIFOs.
*/
static int fifo_show(struct seq_file *seq, void *v)
{
struct dwc2_hsotg *hsotg = seq->private;
int fifo_count = dwc2_hsotg_tx_fifo_count(hsotg);
u32 val;
int idx;
seq_puts(seq, "Non-periodic FIFOs:\n");
seq_printf(seq, "RXFIFO: Size %d\n", dwc2_readl(hsotg, GRXFSIZ));
val = dwc2_readl(hsotg, GNPTXFSIZ);
seq_printf(seq, "NPTXFIFO: Size %d, Start 0x%08x\n",
val >> FIFOSIZE_DEPTH_SHIFT,
val & FIFOSIZE_STARTADDR_MASK);
seq_puts(seq, "\nPeriodic TXFIFOs:\n");
for (idx = 1; idx <= fifo_count; idx++) {
val = dwc2_readl(hsotg, DPTXFSIZN(idx));
seq_printf(seq, "\tDPTXFIFO%2d: Size %d, Start 0x%08x\n", idx,
val >> FIFOSIZE_DEPTH_SHIFT,
val & FIFOSIZE_STARTADDR_MASK);
}
return 0;
}
DEFINE_SHOW_ATTRIBUTE(fifo);
static const char *decode_direction(int is_in)
{
return is_in ? "in" : "out";
}
/**
* ep_show - debugfs: show the state of an endpoint.
* @seq: The seq_file to write data to.
* @v: Unused parameter.
*
* This debugfs entry shows the state of the given endpoint (one is
* registered for each available).
*/
static int ep_show(struct seq_file *seq, void *v)
{
struct dwc2_hsotg_ep *ep = seq->private;
struct dwc2_hsotg *hsotg = ep->parent;
struct dwc2_hsotg_req *req;
int index = ep->index;
int show_limit = 15;
unsigned long flags;
seq_printf(seq, "Endpoint index %d, named %s, dir %s:\n",
ep->index, ep->ep.name, decode_direction(ep->dir_in));
/* first show the register state */
seq_printf(seq, "\tDIEPCTL=0x%08x, DOEPCTL=0x%08x\n",
dwc2_readl(hsotg, DIEPCTL(index)),
dwc2_readl(hsotg, DOEPCTL(index)));
seq_printf(seq, "\tDIEPDMA=0x%08x, DOEPDMA=0x%08x\n",
dwc2_readl(hsotg, DIEPDMA(index)),
dwc2_readl(hsotg, DOEPDMA(index)));
seq_printf(seq, "\tDIEPINT=0x%08x, DOEPINT=0x%08x\n",
dwc2_readl(hsotg, DIEPINT(index)),
dwc2_readl(hsotg, DOEPINT(index)));
seq_printf(seq, "\tDIEPTSIZ=0x%08x, DOEPTSIZ=0x%08x\n",
dwc2_readl(hsotg, DIEPTSIZ(index)),
dwc2_readl(hsotg, DOEPTSIZ(index)));
seq_puts(seq, "\n");
seq_printf(seq, "mps %d\n", ep->ep.maxpacket);
seq_printf(seq, "total_data=%ld\n", ep->total_data);
seq_printf(seq, "request list (%p,%p):\n",
ep->queue.next, ep->queue.prev);
spin_lock_irqsave(&hsotg->lock, flags);
list_for_each_entry(req, &ep->queue, queue) {
if (--show_limit < 0) {
seq_puts(seq, "not showing more requests...\n");
break;
}
seq_printf(seq, "%c req %p: %d bytes @%p, ",
req == ep->req ? '*' : ' ',
req, req->req.length, req->req.buf);
seq_printf(seq, "%d done, res %d\n",
req->req.actual, req->req.status);
}
spin_unlock_irqrestore(&hsotg->lock, flags);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(ep);
/**
* dwc2_hsotg_create_debug - create debugfs directory and files
* @hsotg: The driver state
*
* Create the debugfs files to allow the user to get information
* about the state of the system. The directory name is created
* with the same name as the device itself, in case we end up
* with multiple blocks in future systems.
*/
static void dwc2_hsotg_create_debug(struct dwc2_hsotg *hsotg)
{
struct dentry *root;
unsigned int epidx;
root = hsotg->debug_root;
/* create general state file */
debugfs_create_file("state", 0444, root, hsotg, &state_fops);
debugfs_create_file("testmode", 0644, root, hsotg, &testmode_fops);
debugfs_create_file("fifo", 0444, root, hsotg, &fifo_fops);
/* Create one file for each out endpoint */
for (epidx = 0; epidx < hsotg->num_of_eps; epidx++) {
struct dwc2_hsotg_ep *ep;
ep = hsotg->eps_out[epidx];
if (ep)
debugfs_create_file(ep->name, 0444, root, ep, &ep_fops);
}
/* Create one file for each in endpoint. EP0 is handled with out eps */
for (epidx = 1; epidx < hsotg->num_of_eps; epidx++) {
struct dwc2_hsotg_ep *ep;
ep = hsotg->eps_in[epidx];
if (ep)
debugfs_create_file(ep->name, 0444, root, ep, &ep_fops);
}
}
#else
static inline void dwc2_hsotg_create_debug(struct dwc2_hsotg *hsotg) {}
#endif
/* dwc2_hsotg_delete_debug is removed as cleanup in done in dwc2_debugfs_exit */
#define dump_register(nm) \
{ \
.name = #nm, \
.offset = nm, \
}
static const struct debugfs_reg32 dwc2_regs[] = {
/*
* Accessing registers like this can trigger mode mismatch interrupt.
* However, according to dwc2 databook, the register access, in this
* case, is completed on the processor bus but is ignored by the core
* and does not affect its operation.
*/
dump_register(GOTGCTL),
dump_register(GOTGINT),
dump_register(GAHBCFG),
dump_register(GUSBCFG),
dump_register(GRSTCTL),
dump_register(GINTSTS),
dump_register(GINTMSK),
dump_register(GRXSTSR),
/* Omit GRXSTSP */
dump_register(GRXFSIZ),
dump_register(GNPTXFSIZ),
dump_register(GNPTXSTS),
dump_register(GI2CCTL),
dump_register(GPVNDCTL),
dump_register(GGPIO),
dump_register(GUID),
dump_register(GSNPSID),
dump_register(GHWCFG1),
dump_register(GHWCFG2),
dump_register(GHWCFG3),
dump_register(GHWCFG4),
dump_register(GLPMCFG),
dump_register(GPWRDN),
dump_register(GDFIFOCFG),
dump_register(ADPCTL),
dump_register(HPTXFSIZ),
dump_register(DPTXFSIZN(1)),
dump_register(DPTXFSIZN(2)),
dump_register(DPTXFSIZN(3)),
dump_register(DPTXFSIZN(4)),
dump_register(DPTXFSIZN(5)),
dump_register(DPTXFSIZN(6)),
dump_register(DPTXFSIZN(7)),
dump_register(DPTXFSIZN(8)),
dump_register(DPTXFSIZN(9)),
dump_register(DPTXFSIZN(10)),
dump_register(DPTXFSIZN(11)),
dump_register(DPTXFSIZN(12)),
dump_register(DPTXFSIZN(13)),
dump_register(DPTXFSIZN(14)),
dump_register(DPTXFSIZN(15)),
dump_register(DCFG),
dump_register(DCTL),
dump_register(DSTS),
dump_register(DIEPMSK),
dump_register(DOEPMSK),
dump_register(DAINT),
dump_register(DAINTMSK),
dump_register(DTKNQR1),
dump_register(DTKNQR2),
dump_register(DTKNQR3),
dump_register(DTKNQR4),
dump_register(DVBUSDIS),
dump_register(DVBUSPULSE),
dump_register(DIEPCTL(0)),
dump_register(DIEPCTL(1)),
dump_register(DIEPCTL(2)),
dump_register(DIEPCTL(3)),
dump_register(DIEPCTL(4)),
dump_register(DIEPCTL(5)),
dump_register(DIEPCTL(6)),
dump_register(DIEPCTL(7)),
dump_register(DIEPCTL(8)),
dump_register(DIEPCTL(9)),
dump_register(DIEPCTL(10)),
dump_register(DIEPCTL(11)),
dump_register(DIEPCTL(12)),
dump_register(DIEPCTL(13)),
dump_register(DIEPCTL(14)),
dump_register(DIEPCTL(15)),
dump_register(DOEPCTL(0)),
dump_register(DOEPCTL(1)),
dump_register(DOEPCTL(2)),
dump_register(DOEPCTL(3)),
dump_register(DOEPCTL(4)),
dump_register(DOEPCTL(5)),
dump_register(DOEPCTL(6)),
dump_register(DOEPCTL(7)),
dump_register(DOEPCTL(8)),
dump_register(DOEPCTL(9)),
dump_register(DOEPCTL(10)),
dump_register(DOEPCTL(11)),
dump_register(DOEPCTL(12)),
dump_register(DOEPCTL(13)),
dump_register(DOEPCTL(14)),
dump_register(DOEPCTL(15)),
dump_register(DIEPINT(0)),
dump_register(DIEPINT(1)),
dump_register(DIEPINT(2)),
dump_register(DIEPINT(3)),
dump_register(DIEPINT(4)),
dump_register(DIEPINT(5)),
dump_register(DIEPINT(6)),
dump_register(DIEPINT(7)),
dump_register(DIEPINT(8)),
dump_register(DIEPINT(9)),
dump_register(DIEPINT(10)),
dump_register(DIEPINT(11)),
dump_register(DIEPINT(12)),
dump_register(DIEPINT(13)),
dump_register(DIEPINT(14)),
dump_register(DIEPINT(15)),
dump_register(DOEPINT(0)),
dump_register(DOEPINT(1)),
dump_register(DOEPINT(2)),
dump_register(DOEPINT(3)),
dump_register(DOEPINT(4)),
dump_register(DOEPINT(5)),
dump_register(DOEPINT(6)),
dump_register(DOEPINT(7)),
dump_register(DOEPINT(8)),
dump_register(DOEPINT(9)),
dump_register(DOEPINT(10)),
dump_register(DOEPINT(11)),
dump_register(DOEPINT(12)),
dump_register(DOEPINT(13)),
dump_register(DOEPINT(14)),
dump_register(DOEPINT(15)),
dump_register(DIEPTSIZ(0)),
dump_register(DIEPTSIZ(1)),
dump_register(DIEPTSIZ(2)),
dump_register(DIEPTSIZ(3)),
dump_register(DIEPTSIZ(4)),
dump_register(DIEPTSIZ(5)),
dump_register(DIEPTSIZ(6)),
dump_register(DIEPTSIZ(7)),
dump_register(DIEPTSIZ(8)),
dump_register(DIEPTSIZ(9)),
dump_register(DIEPTSIZ(10)),
dump_register(DIEPTSIZ(11)),
dump_register(DIEPTSIZ(12)),
dump_register(DIEPTSIZ(13)),
dump_register(DIEPTSIZ(14)),
dump_register(DIEPTSIZ(15)),
dump_register(DOEPTSIZ(0)),
dump_register(DOEPTSIZ(1)),
dump_register(DOEPTSIZ(2)),
dump_register(DOEPTSIZ(3)),
dump_register(DOEPTSIZ(4)),
dump_register(DOEPTSIZ(5)),
dump_register(DOEPTSIZ(6)),
dump_register(DOEPTSIZ(7)),
dump_register(DOEPTSIZ(8)),
dump_register(DOEPTSIZ(9)),
dump_register(DOEPTSIZ(10)),
dump_register(DOEPTSIZ(11)),
dump_register(DOEPTSIZ(12)),
dump_register(DOEPTSIZ(13)),
dump_register(DOEPTSIZ(14)),
dump_register(DOEPTSIZ(15)),
dump_register(DIEPDMA(0)),
dump_register(DIEPDMA(1)),
dump_register(DIEPDMA(2)),
dump_register(DIEPDMA(3)),
dump_register(DIEPDMA(4)),
dump_register(DIEPDMA(5)),
dump_register(DIEPDMA(6)),
dump_register(DIEPDMA(7)),
dump_register(DIEPDMA(8)),
dump_register(DIEPDMA(9)),
dump_register(DIEPDMA(10)),
dump_register(DIEPDMA(11)),
dump_register(DIEPDMA(12)),
dump_register(DIEPDMA(13)),
dump_register(DIEPDMA(14)),
dump_register(DIEPDMA(15)),
dump_register(DOEPDMA(0)),
dump_register(DOEPDMA(1)),
dump_register(DOEPDMA(2)),
dump_register(DOEPDMA(3)),
dump_register(DOEPDMA(4)),
dump_register(DOEPDMA(5)),
dump_register(DOEPDMA(6)),
dump_register(DOEPDMA(7)),
dump_register(DOEPDMA(8)),
dump_register(DOEPDMA(9)),
dump_register(DOEPDMA(10)),
dump_register(DOEPDMA(11)),
dump_register(DOEPDMA(12)),
dump_register(DOEPDMA(13)),
dump_register(DOEPDMA(14)),
dump_register(DOEPDMA(15)),
dump_register(DTXFSTS(0)),
dump_register(DTXFSTS(1)),
dump_register(DTXFSTS(2)),
dump_register(DTXFSTS(3)),
dump_register(DTXFSTS(4)),
dump_register(DTXFSTS(5)),
dump_register(DTXFSTS(6)),
dump_register(DTXFSTS(7)),
dump_register(DTXFSTS(8)),
dump_register(DTXFSTS(9)),
dump_register(DTXFSTS(10)),
dump_register(DTXFSTS(11)),
dump_register(DTXFSTS(12)),
dump_register(DTXFSTS(13)),
dump_register(DTXFSTS(14)),
dump_register(DTXFSTS(15)),
dump_register(PCGCTL),
dump_register(HCFG),
dump_register(HFIR),
dump_register(HFNUM),
dump_register(HPTXSTS),
dump_register(HAINT),
dump_register(HAINTMSK),
dump_register(HFLBADDR),
dump_register(HPRT0),
dump_register(HCCHAR(0)),
dump_register(HCCHAR(1)),
dump_register(HCCHAR(2)),
dump_register(HCCHAR(3)),
dump_register(HCCHAR(4)),
dump_register(HCCHAR(5)),
dump_register(HCCHAR(6)),
dump_register(HCCHAR(7)),
dump_register(HCCHAR(8)),
dump_register(HCCHAR(9)),
dump_register(HCCHAR(10)),
dump_register(HCCHAR(11)),
dump_register(HCCHAR(12)),
dump_register(HCCHAR(13)),
dump_register(HCCHAR(14)),
dump_register(HCCHAR(15)),
dump_register(HCSPLT(0)),
dump_register(HCSPLT(1)),
dump_register(HCSPLT(2)),
dump_register(HCSPLT(3)),
dump_register(HCSPLT(4)),
dump_register(HCSPLT(5)),
dump_register(HCSPLT(6)),
dump_register(HCSPLT(7)),
dump_register(HCSPLT(8)),
dump_register(HCSPLT(9)),
dump_register(HCSPLT(10)),
dump_register(HCSPLT(11)),
dump_register(HCSPLT(12)),
dump_register(HCSPLT(13)),
dump_register(HCSPLT(14)),
dump_register(HCSPLT(15)),
dump_register(HCINT(0)),
dump_register(HCINT(1)),
dump_register(HCINT(2)),
dump_register(HCINT(3)),
dump_register(HCINT(4)),
dump_register(HCINT(5)),
dump_register(HCINT(6)),
dump_register(HCINT(7)),
dump_register(HCINT(8)),
dump_register(HCINT(9)),
dump_register(HCINT(10)),
dump_register(HCINT(11)),
dump_register(HCINT(12)),
dump_register(HCINT(13)),
dump_register(HCINT(14)),
dump_register(HCINT(15)),
dump_register(HCINTMSK(0)),
dump_register(HCINTMSK(1)),
dump_register(HCINTMSK(2)),
dump_register(HCINTMSK(3)),
dump_register(HCINTMSK(4)),
dump_register(HCINTMSK(5)),
dump_register(HCINTMSK(6)),
dump_register(HCINTMSK(7)),
dump_register(HCINTMSK(8)),
dump_register(HCINTMSK(9)),
dump_register(HCINTMSK(10)),
dump_register(HCINTMSK(11)),
dump_register(HCINTMSK(12)),
dump_register(HCINTMSK(13)),
dump_register(HCINTMSK(14)),
dump_register(HCINTMSK(15)),
dump_register(HCTSIZ(0)),
dump_register(HCTSIZ(1)),
dump_register(HCTSIZ(2)),
dump_register(HCTSIZ(3)),
dump_register(HCTSIZ(4)),
dump_register(HCTSIZ(5)),
dump_register(HCTSIZ(6)),
dump_register(HCTSIZ(7)),
dump_register(HCTSIZ(8)),
dump_register(HCTSIZ(9)),
dump_register(HCTSIZ(10)),
dump_register(HCTSIZ(11)),
dump_register(HCTSIZ(12)),
dump_register(HCTSIZ(13)),
dump_register(HCTSIZ(14)),
dump_register(HCTSIZ(15)),
dump_register(HCDMA(0)),
dump_register(HCDMA(1)),
dump_register(HCDMA(2)),
dump_register(HCDMA(3)),
dump_register(HCDMA(4)),
dump_register(HCDMA(5)),
dump_register(HCDMA(6)),
dump_register(HCDMA(7)),
dump_register(HCDMA(8)),
dump_register(HCDMA(9)),
dump_register(HCDMA(10)),
dump_register(HCDMA(11)),
dump_register(HCDMA(12)),
dump_register(HCDMA(13)),
dump_register(HCDMA(14)),
dump_register(HCDMA(15)),
dump_register(HCDMAB(0)),
dump_register(HCDMAB(1)),
dump_register(HCDMAB(2)),
dump_register(HCDMAB(3)),
dump_register(HCDMAB(4)),
dump_register(HCDMAB(5)),
dump_register(HCDMAB(6)),
dump_register(HCDMAB(7)),
dump_register(HCDMAB(8)),
dump_register(HCDMAB(9)),
dump_register(HCDMAB(10)),
dump_register(HCDMAB(11)),
dump_register(HCDMAB(12)),
dump_register(HCDMAB(13)),
dump_register(HCDMAB(14)),
dump_register(HCDMAB(15)),
};
#define print_param(_seq, _ptr, _param) \
seq_printf((_seq), "%-30s: %d\n", #_param, (_ptr)->_param)
#define print_param_hex(_seq, _ptr, _param) \
seq_printf((_seq), "%-30s: 0x%x\n", #_param, (_ptr)->_param)
static int params_show(struct seq_file *seq, void *v)
{
struct dwc2_hsotg *hsotg = seq->private;
struct dwc2_core_params *p = &hsotg->params;
int i;
print_param(seq, p, otg_caps.hnp_support);
print_param(seq, p, otg_caps.srp_support);
print_param(seq, p, otg_caps.otg_rev);
print_param(seq, p, dma_desc_enable);
print_param(seq, p, dma_desc_fs_enable);
print_param(seq, p, speed);
print_param(seq, p, enable_dynamic_fifo);
print_param(seq, p, en_multiple_tx_fifo);
print_param(seq, p, host_rx_fifo_size);
print_param(seq, p, host_nperio_tx_fifo_size);
print_param(seq, p, host_perio_tx_fifo_size);
print_param(seq, p, max_transfer_size);
print_param(seq, p, max_packet_count);
print_param(seq, p, host_channels);
print_param(seq, p, phy_type);
print_param(seq, p, phy_utmi_width);
print_param(seq, p, phy_ulpi_ddr);
print_param(seq, p, phy_ulpi_ext_vbus);
print_param(seq, p, i2c_enable);
print_param(seq, p, ipg_isoc_en);
print_param(seq, p, ulpi_fs_ls);
print_param(seq, p, host_support_fs_ls_low_power);
print_param(seq, p, host_ls_low_power_phy_clk);
print_param(seq, p, activate_stm_fs_transceiver);
print_param(seq, p, activate_stm_id_vb_detection);
print_param(seq, p, ts_dline);
print_param(seq, p, reload_ctl);
print_param_hex(seq, p, ahbcfg);
print_param(seq, p, uframe_sched);
print_param(seq, p, external_id_pin_ctl);
print_param(seq, p, power_down);
print_param(seq, p, lpm);
print_param(seq, p, lpm_clock_gating);
print_param(seq, p, besl);
print_param(seq, p, hird_threshold_en);
print_param(seq, p, hird_threshold);
print_param(seq, p, service_interval);
print_param(seq, p, host_dma);
print_param(seq, p, g_dma);
print_param(seq, p, g_dma_desc);
print_param(seq, p, g_rx_fifo_size);
print_param(seq, p, g_np_tx_fifo_size);
for (i = 0; i < MAX_EPS_CHANNELS; i++) {
char str[32];
snprintf(str, 32, "g_tx_fifo_size[%d]", i);
seq_printf(seq, "%-30s: %d\n", str, p->g_tx_fifo_size[i]);
}
return 0;
}
DEFINE_SHOW_ATTRIBUTE(params);
static int hw_params_show(struct seq_file *seq, void *v)
{
struct dwc2_hsotg *hsotg = seq->private;
struct dwc2_hw_params *hw = &hsotg->hw_params;
print_param(seq, hw, op_mode);
print_param(seq, hw, arch);
print_param(seq, hw, dma_desc_enable);
print_param(seq, hw, enable_dynamic_fifo);
print_param(seq, hw, en_multiple_tx_fifo);
print_param(seq, hw, rx_fifo_size);
print_param(seq, hw, host_nperio_tx_fifo_size);
print_param(seq, hw, dev_nperio_tx_fifo_size);
print_param(seq, hw, host_perio_tx_fifo_size);
print_param(seq, hw, nperio_tx_q_depth);
print_param(seq, hw, host_perio_tx_q_depth);
print_param(seq, hw, dev_token_q_depth);
print_param(seq, hw, max_transfer_size);
print_param(seq, hw, max_packet_count);
print_param(seq, hw, host_channels);
print_param(seq, hw, hs_phy_type);
print_param(seq, hw, fs_phy_type);
print_param(seq, hw, i2c_enable);
print_param(seq, hw, num_dev_ep);
print_param(seq, hw, num_dev_perio_in_ep);
print_param(seq, hw, total_fifo_size);
print_param(seq, hw, power_optimized);
print_param(seq, hw, utmi_phy_data_width);
print_param_hex(seq, hw, snpsid);
print_param_hex(seq, hw, dev_ep_dirs);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(hw_params);
static int dr_mode_show(struct seq_file *seq, void *v)
{
struct dwc2_hsotg *hsotg = seq->private;
const char *dr_mode = "";
device_property_read_string(hsotg->dev, "dr_mode", &dr_mode);
seq_printf(seq, "%s\n", dr_mode);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(dr_mode);
int dwc2_debugfs_init(struct dwc2_hsotg *hsotg)
{
int ret;
struct dentry *root;
root = debugfs_create_dir(dev_name(hsotg->dev), usb_debug_root);
hsotg->debug_root = root;
debugfs_create_file("params", 0444, root, hsotg, &params_fops);
debugfs_create_file("hw_params", 0444, root, hsotg, &hw_params_fops);
debugfs_create_file("dr_mode", 0444, root, hsotg, &dr_mode_fops);
/* Add gadget debugfs nodes */
dwc2_hsotg_create_debug(hsotg);
hsotg->regset = devm_kzalloc(hsotg->dev, sizeof(*hsotg->regset),
GFP_KERNEL);
if (!hsotg->regset) {
ret = -ENOMEM;
goto err;
}
hsotg->regset->regs = dwc2_regs;
hsotg->regset->nregs = ARRAY_SIZE(dwc2_regs);
hsotg->regset->base = hsotg->regs;
debugfs_create_regset32("regdump", 0444, root, hsotg->regset);
return 0;
err:
debugfs_remove_recursive(hsotg->debug_root);
return ret;
}
void dwc2_debugfs_exit(struct dwc2_hsotg *hsotg)
{
debugfs_remove_recursive(hsotg->debug_root);
hsotg->debug_root = NULL;
}