/** * debugfs.c - DesignWare USB3 DRD Controller DebugFS file * * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com * * Authors: Felipe Balbi , * Sebastian Andrzej Siewior * * 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 #include #include #include #include #include #include #include #include #include #include "core.h" #include "gadget.h" #include "io.h" #include "debug.h" #define dump_register(nm) \ { \ .name = __stringify(nm), \ .offset = DWC3_ ##nm - DWC3_GLOBALS_REGS_START, \ } 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(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_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_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; 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 (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; 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 (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; 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 (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, }; static int dwc3_hiber_enabled_show(struct seq_file *s, void *unused) { struct dwc3 *dwc = s->private; if (dwc->hiber_enabled) seq_puts(s, "hibernation enabled\n"); else seq_puts(s, "hibernation disabled\n"); return 0; } static int dwc3_hiber_enabled_open(struct inode *inode, struct file *file) { return single_open(file, dwc3_hiber_enabled_show, inode->i_private); } static ssize_t dwc3_hiber_enabled_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; char buf[32]; int enabled = 0; if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) return -EFAULT; sscanf(buf, "%d", &enabled); dwc->hiber_enabled = enabled; return count; } static const struct file_operations dwc3_hiber_enabled_fops = { .open = dwc3_hiber_enabled_open, .write = dwc3_hiber_enabled_write, .read = seq_read, .llseek = seq_lseek, .release = single_release, }; static void dwc3_dump_requests(struct seq_file *s, struct list_head *head, const char *list_name) { struct dwc3_request *dreq; if (list_empty(head)) { seq_printf(s, "list %s is empty\n", list_name); return; } seq_printf(s, "list %s:\n", list_name); list_for_each_entry(dreq, head, list) { struct usb_request *req = &dreq->request; seq_printf(s, "usb_request@0x%p: buf@0x%p(dma@0x%llx): len=0x%x: status=%d: actual=0x%x; start_slot=%u: trb@%p: trb_dma@0x%llx\n", req, req->buf, (unsigned long long)req->dma, req->length, req->status, req->actual, dreq->start_slot, dreq->trb, (unsigned long long)dreq->trb_dma); } } static void dwc3_dump_trbs(struct seq_file *s, struct dwc3_ep *dep) { struct dwc3_trb *trb; int i; seq_printf(s, "busy_slot = %u, free_slot = %u\n", dep->busy_slot % DWC3_TRB_NUM, dep->free_slot % DWC3_TRB_NUM); seq_puts(s, "\t bpl, bph, size, ctrl\n"); for (i = 0; i < DWC3_TRB_NUM; i++) { trb = &dep->trb_pool[i]; if (i == dep->busy_slot % DWC3_TRB_NUM) { seq_puts(s, "busy_slot--|\n"); seq_puts(s, " \\\n"); } if (i == dep->free_slot % DWC3_TRB_NUM) { seq_puts(s, "free_slot--|\n"); seq_puts(s, " \\\n"); } seq_printf(s, "trb[%d](dma&0x%llx): %08x, %08x, %08x, %08x\n", i, (unsigned long long) dep->trb_pool_dma + i * sizeof(*trb), trb->bpl, trb->bph, trb->size, trb->ctrl); } } static void dwc3_dump_dev_event(struct seq_file *s, union dwc3_event event) { seq_puts(s, "[0]DEV "); seq_printf(s, "[1:7]%s ", event.type.type == DWC3_EVENT_TYPE_DEV ? "TYPE_DEV" : event.type.type == DWC3_EVENT_TYPE_CARKIT ? "TYPE_CARKIT" : "TYPE_I2C"); switch (event.devt.type) { case DWC3_DEVICE_EVENT_DISCONNECT: seq_puts(s, "[8:11] DISCONNECT "); break; case DWC3_DEVICE_EVENT_RESET: seq_puts(s, "[8:11] RESET "); break; case DWC3_DEVICE_EVENT_CONNECT_DONE: seq_puts(s, "[8:11] CONNECTION_DONE "); break; case DWC3_DEVICE_EVENT_WAKEUP: seq_puts(s, "[8:11] WAKEUP "); break; case DWC3_DEVICE_EVENT_LINK_STATUS_CHANGE: seq_puts(s, "[8:11] LINK_CHANGE "); seq_puts(s, "[16:24] "); seq_printf(s, "%s ", event.devt.event_info & BIT(4) ? "SS" : "HS"); switch (event.devt.event_info & DWC3_LINK_STATE_MASK) { case DWC3_LINK_STATE_U0: seq_puts(s, "U0"); break; case DWC3_LINK_STATE_U1: seq_puts(s, "U1"); break; case DWC3_LINK_STATE_U2: seq_puts(s, "U2"); break; case DWC3_LINK_STATE_U3: seq_puts(s, "U3"); break; case DWC3_LINK_STATE_SS_DIS: seq_puts(s, "SS_DIS"); break; case DWC3_LINK_STATE_RX_DET: seq_puts(s, "RX_DET"); break; case DWC3_LINK_STATE_SS_INACT: seq_puts(s, "SS_INACT"); break; case DWC3_LINK_STATE_POLL: seq_puts(s, "POLL"); break; case DWC3_LINK_STATE_RECOV: seq_puts(s, "RECOV"); break; case DWC3_LINK_STATE_HRESET: seq_puts(s, "HRESET"); break; case DWC3_LINK_STATE_CMPLY: seq_puts(s, "CMPLY"); break; case DWC3_LINK_STATE_LPBK: seq_puts(s, "LPBK"); break; case DWC3_LINK_STATE_RESET: seq_puts(s, "RESET"); break; case DWC3_LINK_STATE_RESUME: seq_puts(s, "RESUME"); break; } seq_printf(s, "(%x) ", event.devt.event_info & DWC3_LINK_STATE_MASK); break; case DWC3_DEVICE_EVENT_HIBER_REQ: seq_puts(s, "[8:11] HIBER_REQ "); break; case DWC3_DEVICE_EVENT_EOPF: seq_puts(s, "[8:11] EOPF "); break; case DWC3_DEVICE_EVENT_SOF: seq_puts(s, "[8:11] SOF "); break; case DWC3_DEVICE_EVENT_ERRATIC_ERROR: seq_puts(s, "[8:11] ERRATIC_ERROR "); break; case DWC3_DEVICE_EVENT_CMD_CMPL: seq_puts(s, "[8:11] COMMAND_COMPLETE "); break; case DWC3_DEVICE_EVENT_OVERFLOW: seq_puts(s, "[8:11] OVERFLOW "); break; default: seq_printf(s, "[8:11] UNKNOWN (%x) ", event.devt.type); } } static void dwc3_dump_ep_event(struct seq_file *s, union dwc3_event event) { seq_puts(s, "[0]EP "); seq_printf(s, "[1:5]ep%d ", event.depevt.endpoint_number); seq_printf(s, "[6:9]%s ", dwc3_ep_event_string(event.depevt.endpoint_event)); switch (event.depevt.endpoint_event) { case DWC3_DEPEVT_XFERCOMPLETE: case DWC3_DEPEVT_XFERINPROGRESS: if (event.depevt.status & DEPEVT_STATUS_BUSERR) seq_puts(s, "[12] BUSERR "); if (event.depevt.status & DEPEVT_STATUS_SHORT) seq_puts(s, "[13] SHORT "); if (event.depevt.status & DEPEVT_STATUS_IOC) seq_puts(s, "[14] IOC "); if (event.depevt.status & DEPEVT_STATUS_LST) seq_puts(s, "[15] LST "); break; case DWC3_DEPEVT_XFERNOTREADY: if ((event.depevt.status & 0x3) == 1) seq_puts(s, "[12:13] Data_Stage "); else if ((event.depevt.status & 0x3) == 2) seq_puts(s, "[12:13] Status_Stage "); if (event.depevt.status & DEPEVT_STATUS_TRANSFER_ACTIVE) seq_puts(s, "[15] XferActive "); else seq_puts(s, "[15] XferNotActive "); break; case DWC3_DEPEVT_EPCMDCMPLT: if (event.depevt.status & BIT(0)) seq_puts(s, "[12:15] Invalid Transfer Resource "); break; } } static void dwc3_dump_event_buf(struct seq_file *s, struct dwc3_event_buffer *evt) { union dwc3_event event; int i; seq_printf(s, "evt->buf=0x%p(dma@0x%llx), length=%u, lpos=%u, count=%u, flags=%s\n", evt->buf, (unsigned long long) evt->dma, evt->length, evt->lpos, evt->count, evt->flags & DWC3_EVENT_PENDING ? "pending" : "0"); for (i = 0; i < evt->length; i += 4) { event.raw = *(u32 *) (evt->buf + i); if (i == evt->lpos) { seq_puts(s, "lpos-------|\n"); seq_puts(s, " \\\n"); } seq_printf(s, "event[%d]: %08x ", i, event.raw); /* analyze device specific events */ if (event.type.is_devspec) dwc3_dump_dev_event(s, event); else dwc3_dump_ep_event(s, event); seq_puts(s, "\n"); } } static int dwc3_snapshot_show(struct seq_file *s, void *unused) { struct dwc3 *dwc = s->private; unsigned long flags; int i; spin_lock_irqsave(&dwc->lock, flags); for (i = 2; i < DWC3_ENDPOINTS_NUM; i++) { struct dwc3_ep *dep = dwc->eps[i]; if (!(dep->flags & DWC3_EP_ENABLED)) continue; seq_printf(s, "[%s]\n", dep->name); dwc3_dump_requests(s, &dep->request_list, "request_list"); dwc3_dump_requests(s, &dep->req_queued, "req_queued"); if (!list_empty(&dep->req_queued)) dwc3_dump_trbs(s, dep); seq_puts(s, "\n"); } dwc3_dump_event_buf(s, dwc->ev_buffs[0]); spin_unlock_irqrestore(&dwc->lock, flags); return 0; } static int dwc3_snapshot_open(struct inode *inode, struct file *file) { return single_open(file, dwc3_snapshot_show, inode->i_private); } static ssize_t dwc3_snapshot_write(struct file *file, const char __user *ubuf, size_t count, loff_t *ppos) { return count; } static const struct file_operations dwc3_snapshot_fops = { .open = dwc3_snapshot_open, .write = dwc3_snapshot_write, .read = seq_read, .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 (!root) { 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; file = debugfs_create_regset32("regdump", S_IRUGO, root, dwc->regset); if (!file) { ret = -ENOMEM; goto err1; } 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; } } 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; } file = debugfs_create_file("hiber_enabled", S_IRUGO | S_IWUSR, root, dwc, &dwc3_hiber_enabled_fops); if (!file) { ret = -ENOMEM; goto err1; } file = debugfs_create_file("snapshot", S_IRUGO | S_IWUSR, root, dwc, &dwc3_snapshot_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); dwc->root = NULL; }