diff options
Diffstat (limited to 'drivers/usb/dwc3/debugfs.c')
| -rw-r--r-- | drivers/usb/dwc3/debugfs.c | 913 |
1 files changed, 623 insertions, 290 deletions
diff --git a/drivers/usb/dwc3/debugfs.c b/drivers/usb/dwc3/debugfs.c index 9e9f122162f2..d18bf5e32cc8 100644 --- a/drivers/usb/dwc3/debugfs.c +++ b/drivers/usb/dwc3/debugfs.c @@ -1,39 +1,11 @@ -/** +// SPDX-License-Identifier: GPL-2.0 +/* * debugfs.c - DesignWare USB3 DRD Controller DebugFS file * - * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com + * Copyright (C) 2010-2011 Texas Instruments Incorporated - https://www.ti.com * * Authors: Felipe Balbi <balbi@ti.com>, * Sebastian Andrzej Siewior <bigeasy@linutronix.de> - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions, and the following disclaimer, - * without modification. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. The names of the above-listed copyright holders may not be used - * to endorse or promote products derived from this software without - * specific prior written permission. - * - * ALTERNATIVELY, this software may be distributed under the terms of the - * GNU General Public License ("GPL") version 2, as published by the Free - * Software Foundation. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS - * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, - * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include <linux/kernel.h> @@ -53,12 +25,37 @@ #include "io.h" #include "debug.h" +#define DWC3_LSP_MUX_UNSELECTED 0xfffff + #define dump_register(nm) \ { \ .name = __stringify(nm), \ - .offset = DWC3_ ##nm - DWC3_GLOBALS_REGS_START, \ + .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), @@ -67,6 +64,7 @@ static const struct debugfs_reg32 dwc3_regs[] = { dump_register(GCTL), dump_register(GEVTEN), dump_register(GSTS), + dump_register(GUCTL1), dump_register(GSNPSID), dump_register(GGPIO), dump_register(GUID), @@ -85,10 +83,14 @@ static const struct debugfs_reg32 dwc3_regs[] = { 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(GUCTL2), + dump_register(VER_NUMBER), + dump_register(VER_TYPE), dump_register(GUSB2PHYCFG(0)), dump_register(GUSB2PHYCFG(1)), @@ -230,6 +232,8 @@ static const struct debugfs_reg32 dwc3_regs[] = { dump_register(GEVNTCOUNT(0)), dump_register(GHWPARAMS8), + dump_register(GUCTL3), + dump_register(GFLADJ), dump_register(DCFG), dump_register(DCTL), dump_register(DEVTEN), @@ -238,137 +242,38 @@ static const struct debugfs_reg32 dwc3_regs[] = { dump_register(DGCMD), dump_register(DALEPENA), - dump_register(DEPCMDPAR2(0)), - dump_register(DEPCMDPAR2(1)), - dump_register(DEPCMDPAR2(2)), - dump_register(DEPCMDPAR2(3)), - dump_register(DEPCMDPAR2(4)), - dump_register(DEPCMDPAR2(5)), - dump_register(DEPCMDPAR2(6)), - dump_register(DEPCMDPAR2(7)), - dump_register(DEPCMDPAR2(8)), - dump_register(DEPCMDPAR2(9)), - dump_register(DEPCMDPAR2(10)), - dump_register(DEPCMDPAR2(11)), - dump_register(DEPCMDPAR2(12)), - dump_register(DEPCMDPAR2(13)), - dump_register(DEPCMDPAR2(14)), - dump_register(DEPCMDPAR2(15)), - dump_register(DEPCMDPAR2(16)), - dump_register(DEPCMDPAR2(17)), - dump_register(DEPCMDPAR2(18)), - dump_register(DEPCMDPAR2(19)), - dump_register(DEPCMDPAR2(20)), - dump_register(DEPCMDPAR2(21)), - dump_register(DEPCMDPAR2(22)), - dump_register(DEPCMDPAR2(23)), - dump_register(DEPCMDPAR2(24)), - dump_register(DEPCMDPAR2(25)), - dump_register(DEPCMDPAR2(26)), - dump_register(DEPCMDPAR2(27)), - dump_register(DEPCMDPAR2(28)), - dump_register(DEPCMDPAR2(29)), - dump_register(DEPCMDPAR2(30)), - dump_register(DEPCMDPAR2(31)), - - dump_register(DEPCMDPAR1(0)), - dump_register(DEPCMDPAR1(1)), - dump_register(DEPCMDPAR1(2)), - dump_register(DEPCMDPAR1(3)), - dump_register(DEPCMDPAR1(4)), - dump_register(DEPCMDPAR1(5)), - dump_register(DEPCMDPAR1(6)), - dump_register(DEPCMDPAR1(7)), - dump_register(DEPCMDPAR1(8)), - dump_register(DEPCMDPAR1(9)), - dump_register(DEPCMDPAR1(10)), - dump_register(DEPCMDPAR1(11)), - dump_register(DEPCMDPAR1(12)), - dump_register(DEPCMDPAR1(13)), - dump_register(DEPCMDPAR1(14)), - dump_register(DEPCMDPAR1(15)), - dump_register(DEPCMDPAR1(16)), - dump_register(DEPCMDPAR1(17)), - dump_register(DEPCMDPAR1(18)), - dump_register(DEPCMDPAR1(19)), - dump_register(DEPCMDPAR1(20)), - dump_register(DEPCMDPAR1(21)), - dump_register(DEPCMDPAR1(22)), - dump_register(DEPCMDPAR1(23)), - dump_register(DEPCMDPAR1(24)), - dump_register(DEPCMDPAR1(25)), - dump_register(DEPCMDPAR1(26)), - dump_register(DEPCMDPAR1(27)), - dump_register(DEPCMDPAR1(28)), - dump_register(DEPCMDPAR1(29)), - dump_register(DEPCMDPAR1(30)), - dump_register(DEPCMDPAR1(31)), - - dump_register(DEPCMDPAR0(0)), - dump_register(DEPCMDPAR0(1)), - dump_register(DEPCMDPAR0(2)), - dump_register(DEPCMDPAR0(3)), - dump_register(DEPCMDPAR0(4)), - dump_register(DEPCMDPAR0(5)), - dump_register(DEPCMDPAR0(6)), - dump_register(DEPCMDPAR0(7)), - dump_register(DEPCMDPAR0(8)), - dump_register(DEPCMDPAR0(9)), - dump_register(DEPCMDPAR0(10)), - dump_register(DEPCMDPAR0(11)), - dump_register(DEPCMDPAR0(12)), - dump_register(DEPCMDPAR0(13)), - dump_register(DEPCMDPAR0(14)), - dump_register(DEPCMDPAR0(15)), - dump_register(DEPCMDPAR0(16)), - dump_register(DEPCMDPAR0(17)), - dump_register(DEPCMDPAR0(18)), - dump_register(DEPCMDPAR0(19)), - dump_register(DEPCMDPAR0(20)), - dump_register(DEPCMDPAR0(21)), - dump_register(DEPCMDPAR0(22)), - dump_register(DEPCMDPAR0(23)), - dump_register(DEPCMDPAR0(24)), - dump_register(DEPCMDPAR0(25)), - dump_register(DEPCMDPAR0(26)), - dump_register(DEPCMDPAR0(27)), - dump_register(DEPCMDPAR0(28)), - dump_register(DEPCMDPAR0(29)), - dump_register(DEPCMDPAR0(30)), - dump_register(DEPCMDPAR0(31)), - - dump_register(DEPCMD(0)), - dump_register(DEPCMD(1)), - dump_register(DEPCMD(2)), - dump_register(DEPCMD(3)), - dump_register(DEPCMD(4)), - dump_register(DEPCMD(5)), - dump_register(DEPCMD(6)), - dump_register(DEPCMD(7)), - dump_register(DEPCMD(8)), - dump_register(DEPCMD(9)), - dump_register(DEPCMD(10)), - dump_register(DEPCMD(11)), - dump_register(DEPCMD(12)), - dump_register(DEPCMD(13)), - dump_register(DEPCMD(14)), - dump_register(DEPCMD(15)), - dump_register(DEPCMD(16)), - dump_register(DEPCMD(17)), - dump_register(DEPCMD(18)), - dump_register(DEPCMD(19)), - dump_register(DEPCMD(20)), - dump_register(DEPCMD(21)), - dump_register(DEPCMD(22)), - dump_register(DEPCMD(23)), - dump_register(DEPCMD(24)), - dump_register(DEPCMD(25)), - dump_register(DEPCMD(26)), - dump_register(DEPCMD(27)), - dump_register(DEPCMD(28)), - dump_register(DEPCMD(29)), - dump_register(DEPCMD(30)), - dump_register(DEPCMD(31)), + 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), @@ -377,30 +282,150 @@ static const struct debugfs_reg32 dwc3_regs[] = { 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; + int ret; + + ret = pm_runtime_resume_and_get(dwc->dev); + if (ret < 0) + return ret; + + 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); + + pm_runtime_put_sync(dwc->dev); + + 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; + u32 mode; + int ret; + + ret = pm_runtime_resume_and_get(dwc->dev); + if (ret < 0) + return ret; spin_lock_irqsave(&dwc->lock, flags); reg = dwc3_readl(dwc->regs, DWC3_GCTL); spin_unlock_irqrestore(&dwc->lock, flags); - switch (DWC3_GCTL_PRTCAP(reg)) { + mode = DWC3_GCTL_PRTCAP(reg); + switch (mode) { 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"); + seq_printf(s, "%s\n", dwc3_mode_string(mode)); break; default: - seq_printf(s, "UNKNOWN %08x\n", DWC3_GCTL_PRTCAP(reg)); + seq_printf(s, "UNKNOWN %08x\n", mode); } + pm_runtime_put_sync(dwc->dev); + return 0; } @@ -414,27 +439,26 @@ static ssize_t dwc3_mode_write(struct file *file, { struct seq_file *s = file->private_data; struct dwc3 *dwc = s->private; - unsigned long flags; u32 mode = 0; char buf[32]; if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) return -EFAULT; + if (dwc->dr_mode != USB_DR_MODE_OTG) + return count; + if (!strncmp(buf, "host", 4)) - mode |= DWC3_GCTL_PRTCAP_HOST; + mode = DWC3_GCTL_PRTCAP_HOST; if (!strncmp(buf, "device", 6)) - mode |= DWC3_GCTL_PRTCAP_DEVICE; + mode = DWC3_GCTL_PRTCAP_DEVICE; if (!strncmp(buf, "otg", 3)) - mode |= DWC3_GCTL_PRTCAP_OTG; + mode = DWC3_GCTL_PRTCAP_OTG; + + dwc3_set_mode(dwc, mode); - if (mode) { - spin_lock_irqsave(&dwc->lock, flags); - dwc3_set_mode(dwc, mode); - spin_unlock_irqrestore(&dwc->lock, flags); - } return count; } @@ -451,6 +475,11 @@ static int dwc3_testmode_show(struct seq_file *s, void *unused) struct dwc3 *dwc = s->private; unsigned long flags; u32 reg; + int ret; + + ret = pm_runtime_resume_and_get(dwc->dev); + if (ret < 0) + return ret; spin_lock_irqsave(&dwc->lock, flags); reg = dwc3_readl(dwc->regs, DWC3_DCTL); @@ -460,27 +489,29 @@ static int dwc3_testmode_show(struct seq_file *s, void *unused) switch (reg) { case 0: - seq_printf(s, "no test\n"); + seq_puts(s, "no test\n"); break; - case TEST_J: - seq_printf(s, "test_j\n"); + case USB_TEST_J: + seq_puts(s, "test_j\n"); break; - case TEST_K: - seq_printf(s, "test_k\n"); + case USB_TEST_K: + seq_puts(s, "test_k\n"); break; - case TEST_SE0_NAK: - seq_printf(s, "test_se0_nak\n"); + case USB_TEST_SE0_NAK: + seq_puts(s, "test_se0_nak\n"); break; - case TEST_PACKET: - seq_printf(s, "test_packet\n"); + case USB_TEST_PACKET: + seq_puts(s, "test_packet\n"); break; - case TEST_FORCE_EN: - seq_printf(s, "test_force_enable\n"); + case USB_TEST_FORCE_ENABLE: + seq_puts(s, "test_force_enable\n"); break; default: seq_printf(s, "UNKNOWN %d\n", reg); } + pm_runtime_put_sync(dwc->dev); + return 0; } @@ -497,27 +528,34 @@ static ssize_t dwc3_testmode_write(struct file *file, unsigned long flags; u32 testmode = 0; char buf[32]; + int ret; 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; + testmode = USB_TEST_J; else if (!strncmp(buf, "test_k", 6)) - testmode = TEST_K; + testmode = USB_TEST_K; else if (!strncmp(buf, "test_se0_nak", 12)) - testmode = TEST_SE0_NAK; + testmode = USB_TEST_SE0_NAK; else if (!strncmp(buf, "test_packet", 11)) - testmode = TEST_PACKET; + testmode = USB_TEST_PACKET; else if (!strncmp(buf, "test_force_enable", 17)) - testmode = TEST_FORCE_EN; + testmode = USB_TEST_FORCE_ENABLE; else testmode = 0; + ret = pm_runtime_resume_and_get(dwc->dev); + if (ret < 0) + return ret; + spin_lock_irqsave(&dwc->lock, flags); dwc3_gadget_set_test_mode(dwc, testmode); spin_unlock_irqrestore(&dwc->lock, flags); + pm_runtime_put_sync(dwc->dev); + return count; } @@ -535,58 +573,32 @@ static int dwc3_link_state_show(struct seq_file *s, void *unused) unsigned long flags; enum dwc3_link_state state; u32 reg; + u8 speed; + int ret; + + ret = pm_runtime_resume_and_get(dwc->dev); + if (ret < 0) + return ret; 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); + pm_runtime_put_sync(dwc->dev); + 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); - 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); - } + pm_runtime_put_sync(dwc->dev); return 0; } @@ -604,6 +616,9 @@ static ssize_t dwc3_link_state_write(struct file *file, unsigned long flags; enum dwc3_link_state state = 0; char buf[32]; + u32 reg; + u8 speed; + int ret; if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) return -EFAULT; @@ -623,10 +638,33 @@ static ssize_t dwc3_link_state_write(struct file *file, else return -EINVAL; + ret = pm_runtime_resume_and_get(dwc->dev); + if (ret < 0) + return ret; + 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); + pm_runtime_put_sync(dwc->dev); + 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); + pm_runtime_put_sync(dwc->dev); + return -EINVAL; + } + dwc3_gadget_set_link_state(dwc, state); spin_unlock_irqrestore(&dwc->lock, flags); + pm_runtime_put_sync(dwc->dev); + return count; } @@ -638,73 +676,368 @@ static const struct file_operations dwc3_link_state_fops = { .release = single_release, }; -int dwc3_debugfs_init(struct dwc3 *dwc) +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 dentry *root; - struct dentry *file; + struct dwc3_ep *dep = s->private; + struct dwc3 *dwc = dep->dwc; + unsigned long flags; + u32 mdwidth; + u32 val; int ret; - root = debugfs_create_dir(dev_name(dwc->dev), NULL); - if (!root) { - ret = -ENOMEM; - goto err0; - } + ret = pm_runtime_resume_and_get(dwc->dev); + if (ret < 0) + return ret; - dwc->root = root; + spin_lock_irqsave(&dwc->lock, flags); + val = dwc3_core_fifo_space(dep, DWC3_TXFIFO); - dwc->regset = kzalloc(sizeof(*dwc->regset), GFP_KERNEL); - if (!dwc->regset) { - ret = -ENOMEM; - goto err1; - } + /* Convert to bytes */ + mdwidth = dwc3_mdwidth(dwc); - dwc->regset->regs = dwc3_regs; - dwc->regset->nregs = ARRAY_SIZE(dwc3_regs); - dwc->regset->base = dwc->regs; + val *= mdwidth; + val >>= 3; + seq_printf(s, "%u\n", val); + spin_unlock_irqrestore(&dwc->lock, flags); + + pm_runtime_put_sync(dwc->dev); + + 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; + int ret; + + ret = pm_runtime_resume_and_get(dwc->dev); + if (ret < 0) + return ret; + + 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); + + pm_runtime_put_sync(dwc->dev); + + 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; + int ret; + + ret = pm_runtime_resume_and_get(dwc->dev); + if (ret < 0) + return ret; + + 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); + + pm_runtime_put_sync(dwc->dev); + + 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; + int ret; + + ret = pm_runtime_resume_and_get(dwc->dev); + if (ret < 0) + return ret; + + 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); + + pm_runtime_put_sync(dwc->dev); + + 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; + int ret; + + ret = pm_runtime_resume_and_get(dwc->dev); + if (ret < 0) + return ret; + + 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); + + pm_runtime_put_sync(dwc->dev); + + 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; + int ret; + + ret = pm_runtime_resume_and_get(dwc->dev); + if (ret < 0) + return ret; - file = debugfs_create_regset32("regdump", S_IRUGO, root, dwc->regset); - if (!file) { - ret = -ENOMEM; - goto err1; + 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); + + pm_runtime_put_sync(dwc->dev); + + 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; + int ret; + + ret = pm_runtime_resume_and_get(dwc->dev); + if (ret < 0) + return ret; + + 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); + + pm_runtime_put_sync(dwc->dev); + + 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; } - if (IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE)) { - file = debugfs_create_file("mode", S_IRUGO | S_IWUSR, root, - dwc, &dwc3_mode_fops); - if (!file) { - ret = -ENOMEM; - goto err1; - } + 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"); } - 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) { - ret = -ENOMEM; - goto err1; - } - - file = debugfs_create_file("link_state", S_IRUGO | S_IWUSR, root, - dwc, &dwc3_link_state_fops); - if (!file) { - ret = -ENOMEM; - goto err1; - } +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; + int ret; + + ret = pm_runtime_resume_and_get(dwc->dev); + if (ret < 0) + return ret; + + 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); + + pm_runtime_put_sync(dwc->dev); + 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; + int ret; -err1: - debugfs_remove_recursive(root); + ret = pm_runtime_resume_and_get(dwc->dev); + if (ret < 0) + return ret; -err0: - return ret; + 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); + + pm_runtime_put_sync(dwc->dev); + + 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, }, +}; + +void dwc3_debugfs_create_endpoint_dir(struct dwc3_ep *dep) +{ + struct dentry *dir; + int i; + + dir = debugfs_create_dir(dep->name, dep->dwc->debug_root); + 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, dir, dep, fops); + } +} + +void dwc3_debugfs_remove_endpoint_dir(struct dwc3_ep *dep) +{ + debugfs_lookup_and_remove(dep->name, dep->dwc->debug_root); +} + +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; + dwc->regset->dev = dwc->dev; + + root = debugfs_create_dir(dev_name(dwc->dev), usb_debug_root); + dwc->debug_root = 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_recursive(dwc->root); - dwc->root = NULL; + debugfs_lookup_and_remove(dev_name(dwc->dev), usb_debug_root); + kfree(dwc->regset); } |