Perf移植過程頗為曲折，主要目前的開發(fā)環(huán)境太亂，一些開發(fā)的內(nèi)容估計連開發(fā)人自己心里都沒有底，這個東西到底能不能用。開發(fā)一個功能也好，一個平臺也罷，第一不開始做的不是立即著手這件事情，而是想，想清楚整件事情的來龍去脈，想清楚這么做了對以后的開發(fā)產(chǎn)生影響，會不會讓以后的工作很難做，然后再想這么做的具體細節(jié)。目標明確，過程清晰，一氣呵成達到目的。
移植的過程就是從Linux的移植過程，過程曲折，但是收獲頗豐，寫筆記以此記錄整個過程。
1. Linux 版本更新
從平頭哥官網(wǎng)上Download下來代碼之后，想要給目前的代碼打補丁，把目前的代碼拿到手一看傻眼了，將別人的開發(fā)目錄弄得亂七八糟得，打補丁得過程浪費了整整一天得時間發(fā)現(xiàn)這條路完全行不通，然后就放棄。開始在平頭哥Linux的基礎(chǔ)上移植Perf，移植過程比較順利，半天的時間Linux就從板子上起來了，主要用了JTAG 調(diào)試將Linux Kernel 與rootfs編譯在了一起然后進行調(diào)試，這種方式調(diào)試比較簡單，也很節(jié)約時間，中間唯一一個小波折就是Kernel 與rootfs的打包過程。過程如下：
rootfs和kernel編譯在一起
首先配置內(nèi)核支持：
“initial RAM filesystem linked into linux kernel”
然后配置rootfs的路徑，就在此選項的下方，最好配置絕對路徑：
General setup --->
[*] Initial RAM filesystem and RAM disk (initramfs/initrd) support
(${BR_BINARIES_DIR}/rootfs.cpio) Initramfs source file(s)
BR_BINARIES_DIR：需要配置否則無法找到rootfs.cpio.gz 文件
會出現(xiàn)如下kernel panic：
Kernel panic - not syncing: No working init found. Try passing init= option to kernel. See Linux Documentation/init.txt for guidance.
2.Linux 啟動
Linux 啟動過程浪費了大約3~4個小時的時間，Linux 啟動完成之后掛載文件系統(tǒng)的時候，發(fā)現(xiàn)文件系統(tǒng)掛不上，以為啟動參數(shù)不正確，將DTS里面的啟動參數(shù)換了下，發(fā)現(xiàn)還是不行，在buildroot目錄下執(zhí)行了make linux-menuconfig 之后發(fā)現(xiàn)如第一章節(jié)所寫，沒有將Linux與rootfs打包在一起導(dǎo)致Kernel掛載根文件系統(tǒng)的時候找不到rootfs文件所以出現(xiàn)了，上述的報錯，將Kernel重新配置之后Kernel可以掛載rootfs，能正常進入console界面。
這步主要看了下Linux kernel 啟動時如何傳遞啟動命令到內(nèi)核空間里面，JTAG調(diào)試時是將啟動命令寫在DTS中傳到Kernel中的，在DTS的最后chosen 參數(shù)定義了啟動參數(shù)，參數(shù)具體含義比較簡單，主要是ramdisk 文件系統(tǒng)的掛載過程。
image.png
記錄了rootfs的掛載點，與第一個運行的進程信息，這個比較簡單。
3.usb 網(wǎng)卡驅(qū)動移植
Linux 啟動之后如果不移植網(wǎng)卡的話，這件事就不能算完成，行百里半九十者比比皆是，以往的經(jīng)驗告訴我不能這么半途而廢，否則這件事情就不算完整。網(wǎng)卡驅(qū)動移植最為曲折和繁瑣。
Linux啟動之后開始編譯asix驅(qū)動，花了很多時間將asix驅(qū)動放到rootfs中，先前是使用fakeroot將文件放到了/tmp目錄下，但是啟動之后發(fā)現(xiàn)文件不見了，不知道為什么？原因待查先放著.最后將文件放到了/mnt目錄下才在rootfs中可以insmod了，但是執(zhí)行insmod的之后，出現(xiàn)了如下的信息：
image.png
已經(jīng)說的很清楚了，asix.ko驅(qū)動已經(jīng)加載到了Kernel之中了，沒有仔細看Kernel的啟動信息，做重復(fù)無用的工作，就是這種后果，浪費生命。然后就開始查問題，為什么無法生成網(wǎng)卡信息。
Linux 啟動完成之后從打印出來的信息來看Kernel沒有識別USB hub設(shè)備，截圖如下：
USB 打印提示.png
很明顯從識別信息可以看出來，dwc 驅(qū)動識別出來的設(shè)備信息不對，一直沒有留意Kernel啟動信息，浪費了很多的時間在USB hub識別上，這種教訓(xùn)已經(jīng)不是一次兩次了，很多有用的信息之前很多次這種情況看kernel啟動信息可以節(jié)約很多時間，但是一旦出問題就抓住問題本身不放，這個毛病還是沒有改掉，這個件事的教訓(xùn)就是：
一旦驅(qū)動設(shè)備出問題了趕緊看啟動信息，這是第一條，也是最重要的一條，將打印提示信息到對應(yīng)的驅(qū)動中找，切記，切記，先在對應(yīng)的驅(qū)動里面這句話的出處，然后看看網(wǎng)上有沒有類似錯誤的解決方案可供參考。和之前的老驅(qū)動比較之后發(fā)現(xiàn)，DWC2驅(qū)動讀Register 校驗寄存器的值沒有校驗過，導(dǎo)致無法識別出USB Hub，所以會出現(xiàn)上面的打印提示。將老驅(qū)動的代碼移植之后USB Hub 能夠正常識別。
識別USB Hub之后本來以為可以很快將網(wǎng)卡加載上，但是Start mdev之后網(wǎng)卡起不來，解決這個問題大約花去1.5天的時間。新移植的Linux Kernel啟動信息與老的Kernel啟動信息比較截圖如下：
image.png
老的DVB板在啟動之后Start mdev之后就能自動生成網(wǎng)卡，但是新Kernel無法生成。
出現(xiàn)這種問題以為是新的Kernel配置不對，導(dǎo)致網(wǎng)卡無法生成，配置信息核對了無數(shù)遍但是沒有發(fā)現(xiàn)問題，這種對一個動作重復(fù)的行為，在工作之初就有，到現(xiàn)在還是沒有改掉。為什么會如此？
一個動作往復(fù)進行，只能說明對這件事沒有任何的想法或者解決辦法，所以才導(dǎo)致這種行為，這種行為對一個新手來說可以原諒，但是對一個工作了接近了10年的人來說，萬不可原諒，如果一條路走不通就趕緊停下來，仔細想想然后想辦法，而不是簡單的單調(diào)重復(fù)。這種行為與其說是工作，不如說是自我摧殘，可悲?。。。?/p>
首先懷疑是不是hotplug沒有配置，然后看了busybox的配置，更改了/etc/init.d/S10mdev文件：
image.png
移植完之后發(fā)現(xiàn)沒用，還是不正常。
最后將老的DWC2的驅(qū)動替換到了新Kernel之后網(wǎng)卡可以正常生成，確定是DWC2驅(qū)動的問題，芯原對DWC USB 控制器做了改動，具體的改動如下所示：
image.png
image.png
具體的差異文件在，drivers\usb\dwc2\debugfs.c目錄下：
/**
* debugfs.c - Designware USB2 DRD controller debugfs
*
* Copyright (C) 2015 Intel Corporation
* Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
*
* 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/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 - debugfs: change usb test mode
* @seq: The seq file to write to.
* @v: Unused parameter.
*
* This debugfs entry modify the current usb test mode.
*/
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 = 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(&hsotg->lock, flags);
dwc2_hsotg_set_test_mode(hsotg, testmode);
spin_unlock_irqrestore(&hsotg->lock, flags);
return count;
}
int dwc2_hsotg_set_host_test_mode(struct dwc2_hsotg *hsotg, int testmode)
{
int hprt = dwc2_readl(hsotg->regs + HPRT0);
hprt &= ~HPRT0_TSTCTL_MASK;
switch (testmode) {
case TEST_J:
case TEST_K:
case TEST_SE0_NAK:
case TEST_PACKET:
case TEST_FORCE_EN:
hprt |= testmode << HPRT0_TSTCTL_SHIFT;
break;
default:
return -EINVAL;
}
dwc2_writel(hprt, hsotg->regs + HPRT0);
// printk("HPRT0: 0x%x\n", dwc2_readl(hsotg->regs + HPRT0));
return 0;
}
static ssize_t host_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 = 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(&hsotg->lock, flags);
dwc2_hsotg_set_host_test_mode(hsotg, testmode);
spin_unlock_irqrestore(&hsotg->lock, flags);
return count;
}
/**
* testmode_show - debugfs: show usb test mode state
* @seq: The seq file to write to.
* @v: 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->regs + 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 TEST_J:
seq_puts(s, "test_j\n");
break;
case TEST_K:
seq_puts(s, "test_k\n");
break;
case TEST_SE0_NAK:
seq_puts(s, "test_se0_nak\n");
break;
case TEST_PACKET:
seq_puts(s, "test_packet\n");
break;
case TEST_FORCE_EN:
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,
};
static int host_testmode_show(struct seq_file *s, void *unused)
{
struct dwc2_hsotg *hsotg = s->private;
unsigned long flags;
int hprt;
spin_lock_irqsave(&hsotg->lock, flags);
hprt = dwc2_readl(hsotg->regs + HPRT0);
hprt &= HPRT0_TSTCTL_MASK;
hprt >>= HPRT0_TSTCTL_SHIFT;
spin_unlock_irqrestore(&hsotg->lock, flags);
switch (hprt) {
case 0:
seq_puts(s, "no test\n");
break;
case TEST_J:
seq_puts(s, "test_j\n");
break;
case TEST_K:
seq_puts(s, "test_k\n");
break;
case TEST_SE0_NAK:
seq_puts(s, "test_se0_nak\n");
break;
case TEST_PACKET:
seq_puts(s, "test_packet\n");
break;
case TEST_FORCE_EN:
seq_puts(s, "test_force_enable\n");
break;
default:
seq_printf(s, "UNKNOWN %d\n", hprt);
}
return 0;
}
static int host_testmode_open(struct inode *inode, struct file *file)
{
return single_open(file, host_testmode_show, inode->i_private);
}
static const struct file_operations host_testmode_fops = {
.owner = THIS_MODULE,
.open = host_testmode_open,
.write = host_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;
void __iomem *regs = hsotg->regs;
int idx;
seq_printf(seq, "DCFG=0x%08x, DCTL=0x%08x, DSTS=0x%08x\n",
dwc2_readl(regs + DCFG),
dwc2_readl(regs + DCTL),
dwc2_readl(regs + DSTS));
seq_printf(seq, "DIEPMSK=0x%08x, DOEPMASK=0x%08x\n",
dwc2_readl(regs + DIEPMSK), dwc2_readl(regs + DOEPMSK));
seq_printf(seq, "GINTMSK=0x%08x, GINTSTS=0x%08x\n",
dwc2_readl(regs + GINTMSK),
dwc2_readl(regs + GINTSTS));
seq_printf(seq, "DAINTMSK=0x%08x, DAINT=0x%08x\n",
dwc2_readl(regs + DAINTMSK),
dwc2_readl(regs + DAINT));
seq_printf(seq, "GNPTXSTS=0x%08x, GRXSTSR=%08x\n",
dwc2_readl(regs + GNPTXSTS),
dwc2_readl(regs + GRXSTSR));
seq_puts(seq, "\nEndpoint status:\n");
for (idx = 0; idx < hsotg->num_of_eps; idx++) {
u32 in, out;
in = dwc2_readl(regs + DIEPCTL(idx));
out = dwc2_readl(regs + DOEPCTL(idx));
seq_printf(seq, "ep%d: DIEPCTL=0x%08x, DOEPCTL=0x%08x",
idx, in, out);
in = dwc2_readl(regs + DIEPTSIZ(idx));
out = dwc2_readl(regs + DOEPTSIZ(idx));
seq_printf(seq, ", DIEPTSIZ=0x%08x, DOEPTSIZ=0x%08x",
in, out);
seq_puts(seq, "\n");
}
return 0;
}
static int state_open(struct inode *inode, struct file *file)
{
return single_open(file, state_show, inode->i_private);
}
static const struct file_operations state_fops = {
.owner = THIS_MODULE,
.open = state_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
/**
* 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;
void __iomem *regs = hsotg->regs;
u32 val;
int idx;
seq_puts(seq, "Non-periodic FIFOs:\n");
seq_printf(seq, "RXFIFO: Size %d\n", dwc2_readl(regs + GRXFSIZ));
val = dwc2_readl(regs + GNPTXFSIZ);
seq_printf(seq, "NPTXFIFO: Size %d, Start 0x%08x\n",
val >> FIFOSIZE_DEPTH_SHIFT,
val & FIFOSIZE_DEPTH_MASK);
seq_puts(seq, "\nPeriodic TXFIFOs:\n");
for (idx = 1; idx < hsotg->num_of_eps; idx++) {
val = dwc2_readl(regs + DPTXFSIZN(idx));
seq_printf(seq, "\tDPTXFIFO%2d: Size %d, Start 0x%08x\n", idx,
val >> FIFOSIZE_DEPTH_SHIFT,
val & FIFOSIZE_STARTADDR_MASK);
}
return 0;
}
static int fifo_open(struct inode *inode, struct file *file)
{
return single_open(file, fifo_show, inode->i_private);
}
static const struct file_operations fifo_fops = {
.owner = THIS_MODULE,
.open = fifo_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
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;
void __iomem *regs = hsotg->regs;
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(regs + DIEPCTL(index)),
dwc2_readl(regs + DOEPCTL(index)));
seq_printf(seq, "\tDIEPDMA=0x%08x, DOEPDMA=0x%08x\n",
dwc2_readl(regs + DIEPDMA(index)),
dwc2_readl(regs + DOEPDMA(index)));
seq_printf(seq, "\tDIEPINT=0x%08x, DOEPINT=0x%08x\n",
dwc2_readl(regs + DIEPINT(index)),
dwc2_readl(regs + DOEPINT(index)));
seq_printf(seq, "\tDIEPTSIZ=0x%08x, DOEPTSIZ=0x%08x\n",
dwc2_readl(regs + DIEPTSIZ(index)),
dwc2_readl(regs + 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;
}
static int ep_open(struct inode *inode, struct file *file)
{
return single_open(file, ep_show, inode->i_private);
}
static const struct file_operations ep_fops = {
.owner = THIS_MODULE,
.open = ep_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
/**
* 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;
struct dentry *file;
unsigned epidx;
root = hsotg->debug_root;
/* create general state file */
file = debugfs_create_file("state", S_IRUGO, root, hsotg, &state_fops);
if (IS_ERR(file))
dev_err(hsotg->dev, "%s: failed to create state\n", __func__);
file = debugfs_create_file("testmode", S_IRUGO | S_IWUSR, root, hsotg,
&testmode_fops);
if (IS_ERR(file))
dev_err(hsotg->dev, "%s: failed to create testmode\n",
__func__);
file = debugfs_create_file("host_testmode", S_IRUGO | S_IWUSR, root, hsotg,
&host_testmode_fops);
if (IS_ERR(file))
dev_err(hsotg->dev, "%s: failed to create host_testmode\n",
__func__);
file = debugfs_create_file("fifo", S_IRUGO, root, hsotg, &fifo_fops);
if (IS_ERR(file))
dev_err(hsotg->dev, "%s: failed to create fifo\n", __func__);
/* 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) {
file = debugfs_create_file(ep->name, S_IRUGO,
root, ep, &ep_fops);
if (IS_ERR(file))
dev_err(hsotg->dev, "failed to create %s debug file\n",
ep->name);
}
}
/* 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) {
file = debugfs_create_file(ep->name, S_IRUGO,
root, ep, &ep_fops);
if (IS_ERR(file))
dev_err(hsotg->dev, "failed to create %s debug file\n",
ep->name);
}
}
}
#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),
dump_register(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)),
};
int dwc2_debugfs_init(struct dwc2_hsotg *hsotg)
{
int ret;
struct dentry *file;
hsotg->debug_root = debugfs_create_dir(dev_name(hsotg->dev), NULL);
if (!hsotg->debug_root) {
ret = -ENOMEM;
goto err0;
}
/* 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 err1;
}
hsotg->regset->regs = dwc2_regs;
hsotg->regset->nregs = ARRAY_SIZE(dwc2_regs);
hsotg->regset->base = hsotg->regs;
file = debugfs_create_regset32("regdump", S_IRUGO, hsotg->debug_root,
hsotg->regset);
if (!file) {
ret = -ENOMEM;
goto err1;
}
return 0;
err1:
debugfs_remove_recursive(hsotg->debug_root);
err0:
return ret;
}
void dwc2_debugfs_exit(struct dwc2_hsotg *hsotg)
{
debugfs_remove_recursive(hsotg->debug_root);
hsotg->debug_root = NULL;
}
