| /** |
| * 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, \ |
| } |
| |
| |
| #define ep_event_rate(ev, c, p, dt) \ |
| ((dt) ? ((c.ev - p.ev) * (MSEC_PER_SEC)) / (dt) : 0) |
| |
| 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(GUCTL1), |
| 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; |
| |
| if (atomic_read(&dwc->in_lpm)) { |
| seq_puts(s, "USB device is powered off\n"); |
| return 0; |
| } |
| |
| 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 (atomic_read(&dwc->in_lpm)) { |
| dev_err(dwc->dev, "USB device is powered off\n"); |
| return count; |
| } |
| |
| 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; |
| |
| |
| if (atomic_read(&dwc->in_lpm)) { |
| seq_puts(s, "USB device is powered off\n"); |
| return 0; |
| } |
| |
| 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 (atomic_read(&dwc->in_lpm)) { |
| seq_puts(s, "USB device is powered off\n"); |
| return 0; |
| } |
| |
| 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; |
| |
| if (atomic_read(&dwc->in_lpm)) { |
| seq_puts(s, "USB device is powered off\n"); |
| return 0; |
| } |
| |
| 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 (atomic_read(&dwc->in_lpm)) { |
| seq_puts(s, "USB device is powered off\n"); |
| return 0; |
| } |
| |
| 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; |
| |
| if (atomic_read(&dwc->in_lpm)) { |
| seq_puts(s, "USB device is powered off\n"); |
| return 0; |
| } |
| |
| 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; |
| |
| if (atomic_read(&dwc->in_lpm)) { |
| seq_puts(s, "USB device is powered off\n"); |
| return 0; |
| } |
| |
| 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; |
| |
| if (atomic_read(&dwc->in_lpm)) { |
| seq_puts(s, "USB device is powered off\n"); |
| return 0; |
| } |
| |
| 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; |
| |
| if (atomic_read(&dwc->in_lpm)) { |
| seq_puts(s, "USB device is powered off\n"); |
| return 0; |
| } |
| |
| 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; |
| |
| if (atomic_read(&dwc->in_lpm)) { |
| seq_puts(s, "USB device is powered off\n"); |
| return 0; |
| } |
| |
| 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; |
| |
| if (atomic_read(&dwc->in_lpm)) { |
| seq_puts(s, "USB device is powered off\n"); |
| return 0; |
| } |
| |
| 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; |
| |
| if (atomic_read(&dwc->in_lpm)) { |
| seq_puts(s, "USB device is powered off\n"); |
| return 0; |
| } |
| |
| 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); |
| } |
| } |
| |
| static ssize_t dwc3_store_int_events(struct file *file, |
| const char __user *ubuf, size_t count, loff_t *ppos) |
| { |
| int i, ret; |
| unsigned long flags; |
| struct seq_file *s = file->private_data; |
| struct dwc3 *dwc = s->private; |
| struct dwc3_ep *dep; |
| struct timespec ts; |
| u8 clear_stats; |
| |
| if (ubuf == NULL) { |
| pr_err("[%s] EINVAL\n", __func__); |
| ret = -EINVAL; |
| return ret; |
| } |
| |
| ret = kstrtou8_from_user(ubuf, count, 0, &clear_stats); |
| if (ret < 0) { |
| pr_err("can't get enter value.\n"); |
| return ret; |
| } |
| |
| if (clear_stats != 0) { |
| pr_err("Wrong value. To clear stats, enter value as 0.\n"); |
| ret = -EINVAL; |
| return ret; |
| } |
| |
| pr_debug("%s(): clearing debug interrupt buffers\n", __func__); |
| spin_lock_irqsave(&dwc->lock, flags); |
| 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); |
| 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, "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\n", |
| ktime_to_us(dwc->t_pwr_evt_irq)); |
| |
| seq_printf(s, "l1_remote_wakeup_cnt : %lu\n", |
| dwc->l1_remote_wakeup_cnt); |
| |
| 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) |
| { |
| struct dentry *root; |
| struct dentry *file; |
| int ret; |
| |
| 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"); |
| ret = -ENOMEM; |
| goto err0; |
| } |
| dwc->root = root; |
| |
| dwc->regset = kzalloc(sizeof(*dwc->regset), GFP_KERNEL); |
| if (!dwc->regset) { |
| ret = -ENOMEM; |
| goto err1; |
| } |
| |
| dwc->regset->regs = dwc3_regs; |
| dwc->regset->nregs = ARRAY_SIZE(dwc3_regs); |
| dwc->regset->base = dwc->regs - DWC3_GLOBALS_REGS_START; |
| |
| if (dwc->create_reg_debugfs) { |
| file = debugfs_create_regset32("regdump", 0444, |
| 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); |
| |
| file = debugfs_create_file("int_events", 0644, root, dwc, |
| &dwc3_gadget_dbg_events_fops); |
| if (!file) { |
| ret = -ENOMEM; |
| goto err1; |
| } |
| } |
| |
| return 0; |
| |
| err1: |
| debugfs_remove_recursive(root); |
| err0: |
| return ret; |
| } |
| |
| void dwc3_debugfs_exit(struct dwc3 *dwc) |
| { |
| debugfs_remove_recursive(dwc->root); |
| kfree(dwc->regset); |
| } |