| // SPDX-License-Identifier: GPL-2.0 |
| /* |
| * debugfs.c - DesignWare USB3 DRD Controller DebugFS file |
| * |
| * Copyright (C) 2010-2011 Texas Instruments Incorporated - https://www.ti.com |
| * |
| * Authors: Felipe Balbi <balbi@ti.com>, |
| * Sebastian Andrzej Siewior <bigeasy@linutronix.de> |
| */ |
| |
| #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 DWC3_LSP_MUX_UNSELECTED 0xfffff |
| |
| #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(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(GDBGBMU), |
| 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 void dwc3_host_lsp(struct seq_file *s) |
| { |
| struct dwc3 *dwc = s->private; |
| bool dbc_enabled; |
| u32 sel; |
| u32 reg; |
| u32 val; |
| |
| dbc_enabled = !!(dwc->hwparams.hwparams1 & DWC3_GHWPARAMS1_ENDBC); |
| |
| sel = dwc->dbg_lsp_select; |
| if (sel == DWC3_LSP_MUX_UNSELECTED) { |
| seq_puts(s, "Write LSP selection to print for host\n"); |
| return; |
| } |
| |
| reg = DWC3_GDBGLSPMUX_HOSTSELECT(sel); |
| |
| dwc3_writel(dwc->regs, DWC3_GDBGLSPMUX, reg); |
| val = dwc3_readl(dwc->regs, DWC3_GDBGLSP); |
| seq_printf(s, "GDBGLSP[%d] = 0x%08x\n", sel, val); |
| |
| if (dbc_enabled && sel < 256) { |
| reg |= DWC3_GDBGLSPMUX_ENDBC; |
| dwc3_writel(dwc->regs, DWC3_GDBGLSPMUX, reg); |
| val = dwc3_readl(dwc->regs, DWC3_GDBGLSP); |
| seq_printf(s, "GDBGLSP_DBC[%d] = 0x%08x\n", sel, val); |
| } |
| } |
| |
| static void dwc3_gadget_lsp(struct seq_file *s) |
| { |
| struct dwc3 *dwc = s->private; |
| int i; |
| u32 reg; |
| |
| for (i = 0; i < 16; i++) { |
| reg = DWC3_GDBGLSPMUX_DEVSELECT(i); |
| dwc3_writel(dwc->regs, DWC3_GDBGLSPMUX, reg); |
| reg = dwc3_readl(dwc->regs, DWC3_GDBGLSP); |
| seq_printf(s, "GDBGLSP[%d] = 0x%08x\n", i, reg); |
| } |
| } |
| |
| static int dwc3_lsp_show(struct seq_file *s, void *unused) |
| { |
| struct dwc3 *dwc = s->private; |
| unsigned int current_mode; |
| unsigned long flags; |
| u32 reg; |
| |
| spin_lock_irqsave(&dwc->lock, flags); |
| reg = dwc3_readl(dwc->regs, DWC3_GSTS); |
| current_mode = DWC3_GSTS_CURMOD(reg); |
| |
| switch (current_mode) { |
| case DWC3_GSTS_CURMOD_HOST: |
| dwc3_host_lsp(s); |
| break; |
| case DWC3_GSTS_CURMOD_DEVICE: |
| dwc3_gadget_lsp(s); |
| break; |
| default: |
| seq_puts(s, "Mode is unknown, no LSP register printed\n"); |
| break; |
| } |
| spin_unlock_irqrestore(&dwc->lock, flags); |
| |
| return 0; |
| } |
| |
| static int dwc3_lsp_open(struct inode *inode, struct file *file) |
| { |
| return single_open(file, dwc3_lsp_show, inode->i_private); |
| } |
| |
| static ssize_t dwc3_lsp_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; |
| char buf[32] = { 0 }; |
| u32 sel; |
| int ret; |
| |
| if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) |
| return -EFAULT; |
| |
| ret = kstrtouint(buf, 0, &sel); |
| if (ret) |
| return ret; |
| |
| spin_lock_irqsave(&dwc->lock, flags); |
| dwc->dbg_lsp_select = sel; |
| spin_unlock_irqrestore(&dwc->lock, flags); |
| |
| return count; |
| } |
| |
| static const struct file_operations dwc3_lsp_fops = { |
| .open = dwc3_lsp_open, |
| .write = dwc3_lsp_write, |
| .read = seq_read, |
| .llseek = seq_lseek, |
| .release = single_release, |
| }; |
| |
| 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_puts(s, "host\n"); |
| break; |
| case DWC3_GCTL_PRTCAP_DEVICE: |
| seq_puts(s, "device\n"); |
| break; |
| case DWC3_GCTL_PRTCAP_OTG: |
| seq_puts(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; |
| u32 mode = 0; |
| char buf[32]; |
| |
| if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) |
| return -EFAULT; |
| |
| if (dwc->dr_mode != USB_DR_MODE_OTG) |
| return count; |
| |
| 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; |
| |
| dwc3_set_mode(dwc, mode); |
| |
| 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_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", 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 = 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(&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; |
| u8 speed; |
| |
| spin_lock_irqsave(&dwc->lock, flags); |
| reg = dwc3_readl(dwc->regs, DWC3_GSTS); |
| if (DWC3_GSTS_CURMOD(reg) != DWC3_GSTS_CURMOD_DEVICE) { |
| seq_puts(s, "Not available\n"); |
| spin_unlock_irqrestore(&dwc->lock, flags); |
| return 0; |
| } |
| |
| reg = dwc3_readl(dwc->regs, DWC3_DSTS); |
| state = DWC3_DSTS_USBLNKST(reg); |
| speed = reg & DWC3_DSTS_CONNECTSPD; |
| |
| seq_printf(s, "%s\n", (speed >= DWC3_DSTS_SUPERSPEED) ? |
| dwc3_gadget_link_string(state) : |
| dwc3_gadget_hs_link_string(state)); |
| spin_unlock_irqrestore(&dwc->lock, flags); |
| |
| 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]; |
| u32 reg; |
| u8 speed; |
| |
| 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); |
| reg = dwc3_readl(dwc->regs, DWC3_GSTS); |
| if (DWC3_GSTS_CURMOD(reg) != DWC3_GSTS_CURMOD_DEVICE) { |
| spin_unlock_irqrestore(&dwc->lock, flags); |
| return -EINVAL; |
| } |
| |
| reg = dwc3_readl(dwc->regs, DWC3_DSTS); |
| speed = reg & DWC3_DSTS_CONNECTSPD; |
| |
| if (speed < DWC3_DSTS_SUPERSPEED && |
| state != DWC3_LINK_STATE_RECOV) { |
| spin_unlock_irqrestore(&dwc->lock, flags); |
| return -EINVAL; |
| } |
| |
| 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 { |
| const char name[25]; |
| const struct file_operations *const fops; |
| }; |
| |
| static int dwc3_tx_fifo_size_show(struct seq_file *s, void *unused) |
| { |
| struct dwc3_ep *dep = s->private; |
| struct dwc3 *dwc = dep->dwc; |
| unsigned long flags; |
| u32 mdwidth; |
| u32 val; |
| |
| spin_lock_irqsave(&dwc->lock, flags); |
| val = dwc3_core_fifo_space(dep, DWC3_TXFIFO); |
| |
| /* Convert to bytes */ |
| mdwidth = dwc3_mdwidth(dwc); |
| |
| val *= mdwidth; |
| val >>= 3; |
| seq_printf(s, "%u\n", val); |
| spin_unlock_irqrestore(&dwc->lock, flags); |
| |
| return 0; |
| } |
| |
| static int dwc3_rx_fifo_size_show(struct seq_file *s, void *unused) |
| { |
| struct dwc3_ep *dep = s->private; |
| struct dwc3 *dwc = dep->dwc; |
| unsigned long flags; |
| u32 mdwidth; |
| u32 val; |
| |
| spin_lock_irqsave(&dwc->lock, flags); |
| val = dwc3_core_fifo_space(dep, DWC3_RXFIFO); |
| |
| /* Convert to bytes */ |
| mdwidth = dwc3_mdwidth(dwc); |
| |
| val *= mdwidth; |
| val >>= 3; |
| 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_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_puts(s, "--\n"); |
| goto out; |
| } |
| |
| switch (usb_endpoint_type(dep->endpoint.desc)) { |
| case USB_ENDPOINT_XFER_CONTROL: |
| seq_puts(s, "control\n"); |
| break; |
| case USB_ENDPOINT_XFER_ISOC: |
| seq_puts(s, "isochronous\n"); |
| break; |
| case USB_ENDPOINT_XFER_BULK: |
| seq_puts(s, "bulk\n"); |
| break; |
| case USB_ENDPOINT_XFER_INT: |
| seq_puts(s, "interrupt\n"); |
| break; |
| default: |
| seq_puts(s, "--\n"); |
| } |
| |
| out: |
| spin_unlock_irqrestore(&dwc->lock, flags); |
| |
| return 0; |
| } |
| |
| static int dwc3_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_puts(s, "--\n"); |
| goto out; |
| } |
| |
| seq_puts(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]; |
| unsigned int type = DWC3_TRBCTL_TYPE(trb->ctrl); |
| |
| seq_printf(s, "%08x%08x,%d,%s,%d,%d,%d,%d,%d,%d %c%c\n", |
| trb->bph, trb->bpl, trb->size, |
| dwc3_trb_type_string(type), |
| !!(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), |
| dep->trb_enqueue == i ? 'E' : ' ', |
| dep->trb_dequeue == i ? 'D' : ' '); |
| } |
| |
| out: |
| spin_unlock_irqrestore(&dwc->lock, flags); |
| |
| return 0; |
| } |
| |
| static int dwc3_ep_info_register_show(struct seq_file *s, void *unused) |
| { |
| struct dwc3_ep *dep = s->private; |
| struct dwc3 *dwc = dep->dwc; |
| unsigned long flags; |
| u64 ep_info; |
| u32 lower_32_bits; |
| u32 upper_32_bits; |
| u32 reg; |
| |
| spin_lock_irqsave(&dwc->lock, flags); |
| reg = DWC3_GDBGLSPMUX_EPSELECT(dep->number); |
| dwc3_writel(dwc->regs, DWC3_GDBGLSPMUX, reg); |
| |
| lower_32_bits = dwc3_readl(dwc->regs, DWC3_GDBGEPINFO0); |
| upper_32_bits = dwc3_readl(dwc->regs, DWC3_GDBGEPINFO1); |
| |
| ep_info = ((u64)upper_32_bits << 32) | lower_32_bits; |
| seq_printf(s, "0x%016llx\n", ep_info); |
| spin_unlock_irqrestore(&dwc->lock, flags); |
| |
| return 0; |
| } |
| |
| DEFINE_SHOW_ATTRIBUTE(dwc3_tx_fifo_size); |
| DEFINE_SHOW_ATTRIBUTE(dwc3_rx_fifo_size); |
| DEFINE_SHOW_ATTRIBUTE(dwc3_tx_request_queue); |
| DEFINE_SHOW_ATTRIBUTE(dwc3_rx_request_queue); |
| DEFINE_SHOW_ATTRIBUTE(dwc3_rx_info_queue); |
| DEFINE_SHOW_ATTRIBUTE(dwc3_descriptor_fetch_queue); |
| DEFINE_SHOW_ATTRIBUTE(dwc3_event_queue); |
| DEFINE_SHOW_ATTRIBUTE(dwc3_transfer_type); |
| DEFINE_SHOW_ATTRIBUTE(dwc3_trb_ring); |
| DEFINE_SHOW_ATTRIBUTE(dwc3_ep_info_register); |
| |
| static const struct dwc3_ep_file_map dwc3_ep_file_map[] = { |
| { "tx_fifo_size", &dwc3_tx_fifo_size_fops, }, |
| { "rx_fifo_size", &dwc3_rx_fifo_size_fops, }, |
| { "tx_request_queue", &dwc3_tx_request_queue_fops, }, |
| { "rx_request_queue", &dwc3_rx_request_queue_fops, }, |
| { "rx_info_queue", &dwc3_rx_info_queue_fops, }, |
| { "descriptor_fetch_queue", &dwc3_descriptor_fetch_queue_fops, }, |
| { "event_queue", &dwc3_event_queue_fops, }, |
| { "transfer_type", &dwc3_transfer_type_fops, }, |
| { "trb_ring", &dwc3_trb_ring_fops, }, |
| { "GDBGEPINFO", &dwc3_ep_info_register_fops, }, |
| }; |
| |
| static void dwc3_debugfs_create_endpoint_files(struct dwc3_ep *dep, |
| struct dentry *parent) |
| { |
| int i; |
| |
| for (i = 0; i < ARRAY_SIZE(dwc3_ep_file_map); i++) { |
| const struct file_operations *fops = dwc3_ep_file_map[i].fops; |
| const char *name = dwc3_ep_file_map[i].name; |
| |
| debugfs_create_file(name, 0444, parent, dep, fops); |
| } |
| } |
| |
| void dwc3_debugfs_create_endpoint_dir(struct dwc3_ep *dep) |
| { |
| struct dentry *dir; |
| struct dentry *root; |
| |
| root = debugfs_lookup(dev_name(dep->dwc->dev), usb_debug_root); |
| dir = debugfs_create_dir(dep->name, root); |
| dwc3_debugfs_create_endpoint_files(dep, dir); |
| } |
| |
| void dwc3_debugfs_init(struct dwc3 *dwc) |
| { |
| struct dentry *root; |
| |
| dwc->regset = kzalloc(sizeof(*dwc->regset), GFP_KERNEL); |
| if (!dwc->regset) |
| return; |
| |
| dwc->dbg_lsp_select = DWC3_LSP_MUX_UNSELECTED; |
| |
| dwc->regset->regs = dwc3_regs; |
| dwc->regset->nregs = ARRAY_SIZE(dwc3_regs); |
| dwc->regset->base = dwc->regs - DWC3_GLOBALS_REGS_START; |
| |
| root = debugfs_create_dir(dev_name(dwc->dev), usb_debug_root); |
| debugfs_create_regset32("regdump", 0444, root, dwc->regset); |
| debugfs_create_file("lsp_dump", 0644, root, dwc, &dwc3_lsp_fops); |
| |
| if (IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE)) |
| debugfs_create_file("mode", 0644, root, dwc, |
| &dwc3_mode_fops); |
| |
| if (IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE) || |
| IS_ENABLED(CONFIG_USB_DWC3_GADGET)) { |
| debugfs_create_file("testmode", 0644, root, dwc, |
| &dwc3_testmode_fops); |
| debugfs_create_file("link_state", 0644, root, dwc, |
| &dwc3_link_state_fops); |
| } |
| } |
| |
| void dwc3_debugfs_exit(struct dwc3 *dwc) |
| { |
| debugfs_remove(debugfs_lookup(dev_name(dwc->dev), usb_debug_root)); |
| kfree(dwc->regset); |
| } |
