/** * 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 * * 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 #include #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, \ } #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(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(GFLADJ), 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] = {0}; 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] = {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; 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] = {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, }; static int ep_num; static ssize_t dwc3_store_ep_num(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 kbuf[10] = {0}; unsigned int num, dir, temp; unsigned long flags; if (copy_from_user(kbuf, ubuf, min_t(size_t, sizeof(kbuf) - 1, count))) return -EFAULT; if (sscanf(kbuf, "%u %u", &num, &dir) != 2) return -EINVAL; if (dir != 0 && dir != 1) return -EINVAL; temp = (num << 1) + dir; if (temp >= (dwc->num_in_eps + dwc->num_out_eps) || temp >= DWC3_ENDPOINTS_NUM) return -EINVAL; spin_lock_irqsave(&dwc->lock, flags); ep_num = temp; spin_unlock_irqrestore(&dwc->lock, flags); return count; } static int dwc3_ep_req_list_show(struct seq_file *s, void *unused) { struct dwc3 *dwc = s->private; struct dwc3_ep *dep; struct dwc3_request *req = NULL; struct list_head *ptr = NULL; unsigned long flags; spin_lock_irqsave(&dwc->lock, flags); dep = dwc->eps[ep_num]; seq_printf(s, "%s request list: flags: 0x%x\n", dep->name, dep->flags); list_for_each(ptr, &dep->request_list) { req = list_entry(ptr, struct dwc3_request, list); seq_printf(s, "req:0x%pK len: %d sts: %d dma:0x%pKa num_sgs: %d\n", req, req->request.length, req->request.status, &req->request.dma, req->request.num_sgs); } spin_unlock_irqrestore(&dwc->lock, flags); return 0; } static int dwc3_ep_req_list_open(struct inode *inode, struct file *file) { return single_open(file, dwc3_ep_req_list_show, inode->i_private); } static const struct file_operations dwc3_ep_req_list_fops = { .open = dwc3_ep_req_list_open, .write = dwc3_store_ep_num, .read = seq_read, .llseek = seq_lseek, .release = single_release, }; static int dwc3_ep_queued_req_show(struct seq_file *s, void *unused) { struct dwc3 *dwc = s->private; struct dwc3_ep *dep; struct dwc3_request *req = NULL; struct list_head *ptr = NULL; unsigned long flags; spin_lock_irqsave(&dwc->lock, flags); dep = dwc->eps[ep_num]; seq_printf(s, "%s queued reqs to HW: flags:0x%x\n", dep->name, dep->flags); list_for_each(ptr, &dep->req_queued) { req = list_entry(ptr, struct dwc3_request, list); seq_printf(s, "req:0x%pK len:%d sts:%d dma:%pKa nsg:%d trb:0x%pK\n", req, req->request.length, req->request.status, &req->request.dma, req->request.num_sgs, req->trb); } spin_unlock_irqrestore(&dwc->lock, flags); return 0; } static int dwc3_ep_queued_req_open(struct inode *inode, struct file *file) { return single_open(file, dwc3_ep_queued_req_show, inode->i_private); } const struct file_operations dwc3_ep_req_queued_fops = { .open = dwc3_ep_queued_req_open, .write = dwc3_store_ep_num, .read = seq_read, .llseek = seq_lseek, .release = single_release, }; static int dwc3_ep_trbs_show(struct seq_file *s, void *unused) { struct dwc3 *dwc = s->private; struct dwc3_ep *dep; struct dwc3_trb *trb; unsigned long flags; int j; if (!ep_num) return 0; spin_lock_irqsave(&dwc->lock, flags); dep = dwc->eps[ep_num]; if (!dep->trb_pool) { spin_unlock_irqrestore(&dwc->lock, flags); return 0; } seq_printf(s, "%s trb pool: flags:0x%x freeslot:%d busyslot:%d\n", dep->name, dep->flags, dep->free_slot, dep->busy_slot); for (j = 0; j < DWC3_TRB_NUM; j++) { trb = &dep->trb_pool[j]; seq_printf(s, "trb:0x%pK bph:0x%x bpl:0x%x size:0x%x ctrl: %x\n", trb, trb->bph, trb->bpl, trb->size, trb->ctrl); } spin_unlock_irqrestore(&dwc->lock, flags); return 0; } static int dwc3_ep_trbs_list_open(struct inode *inode, struct file *file) { return single_open(file, dwc3_ep_trbs_show, inode->i_private); } const struct file_operations dwc3_ep_trb_list_fops = { .open = dwc3_ep_trbs_list_open, .write = dwc3_store_ep_num, .read = seq_read, .llseek = seq_lseek, .release = single_release, }; static unsigned int ep_addr_rxdbg_mask = 1; module_param(ep_addr_rxdbg_mask, uint, S_IRUGO | S_IWUSR); static unsigned int ep_addr_txdbg_mask = 1; module_param(ep_addr_txdbg_mask, uint, S_IRUGO | S_IWUSR); static struct dwc3 *dbg_dwc3_data[DWC_CTRL_COUNT]; static int allow_dbg_print(u8 ep_num) { int dir, num; /* allow bus wide events */ if (ep_num == 0xff) return 1; dir = ep_num & 0x1; num = ep_num >> 1; num = 1 << num; if (dir && (num & ep_addr_txdbg_mask)) return 1; if (!dir && (num & ep_addr_rxdbg_mask)) return 1; return 0; } /** * dwc3_dbg_print: prints the common part of the event * @addr: endpoint address * @name: event name * @status: status * @extra: extra information * @dwc3: pointer to struct dwc3 */ void dwc3_dbg_print(struct dwc3 *dwc, u8 ep_num, const char *name, int status, const char *extra) { if (!allow_dbg_print(ep_num)) return; if (name == NULL) return; ipc_log_string(dwc->dwc_ipc_log_ctxt, "%02X %-12.12s %4i ?\t%s", ep_num, name, status, extra); } /** * dwc3_dbg_done: prints a DONE event * @addr: endpoint address * @td: transfer descriptor * @status: status * @dwc3: pointer to struct dwc3 */ void dwc3_dbg_done(struct dwc3 *dwc, u8 ep_num, const u32 count, int status) { if (!allow_dbg_print(ep_num)) return; ipc_log_string(dwc->dwc_ipc_log_ctxt, "%02X %-12.12s %4i ?\t%d", ep_num, "DONE", status, count); } /* * dwc3_dbg_queue: prints a QUEUE event * @addr: endpoint address * @req: USB request * @status: status */ void dwc3_dbg_queue(struct dwc3 *dwc, u8 ep_num, const struct usb_request *req, int status) { if (!allow_dbg_print(ep_num)) return; if (req != NULL) { ipc_log_string(dwc->dwc_ipc_log_ctxt, "%02X %-12.12s %4i ?\t%d %d", ep_num, "QUEUE", status, !req->no_interrupt, req->length); } } /** * dwc3_dbg_setup: prints a SETUP event * @addr: endpoint address * @req: setup request */ void dwc3_dbg_setup(struct dwc3 *dwc, u8 ep_num, const struct usb_ctrlrequest *req) { if (!allow_dbg_print(ep_num)) return; if (req != NULL) { ipc_log_string(dwc->dwc_ipc_log_ctxt, "%02X %-12.12s ?\t%02X %02X %04X %04X %d", ep_num, "SETUP", req->bRequestType, req->bRequest, le16_to_cpu(req->wValue), le16_to_cpu(req->wIndex), le16_to_cpu(req->wLength)); } } /** * dwc3_dbg_print_reg: prints a reg value * @name: reg name * @reg: reg value to be printed */ void dwc3_dbg_print_reg(struct dwc3 *dwc, const char *name, int reg) { if (name == NULL) return; ipc_log_string(dwc->dwc_ipc_log_ctxt, "%s = 0x%08x", name, reg); } 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; } spin_lock_irqsave(&dwc->lock, flags); pr_debug("%s(): clearing debug interrupt buffers\n", __func__); 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, "cmdcmplt:%u @ %luHz\n", dep->dbg_ep_events.cmdcmplt, ep_event_rate(cmdcmplt, 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, }; static int count; int dwc3_debugfs_init(struct dwc3 *dwc) { struct dentry *root; struct dentry *file; if (count >= DWC_CTRL_COUNT) { dev_err(dwc->dev, "Err dwc instance %d >= %d available\n", count, DWC_CTRL_COUNT); return -EINVAL; } root = debugfs_create_dir(dev_name(dwc->dev), NULL); if (!root) { dev_err(dwc->dev, "Can't create debugfs root\n"); return -ENOMEM; } dwc->root = root; dwc->regset = kzalloc(sizeof(*dwc->regset), GFP_KERNEL); if (!dwc->regset) { 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) { dev_dbg(dwc->dev, "Can't create debugfs regdump\n"); 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) { dev_dbg(dwc->dev, "Can't create debugfs mode\n"); 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) { dev_dbg(dwc->dev, "Can't create debugfs testmode\n"); goto err1; } 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 linkstate\n"); goto err1; } } file = debugfs_create_file("trbs", S_IRUGO | S_IWUSR, root, dwc, &dwc3_ep_trb_list_fops); if (!file) { dev_dbg(dwc->dev, "Can't create debugfs trbs\n"); goto err1; } file = debugfs_create_file("requests", S_IRUGO | S_IWUSR, root, dwc, &dwc3_ep_req_list_fops); if (!file) { dev_dbg(dwc->dev, "Can't create debugfs requests\n"); goto err1; } file = debugfs_create_file("queued_reqs", S_IRUGO | S_IWUSR, root, dwc, &dwc3_ep_req_queued_fops); if (!file) { dev_dbg(dwc->dev, "Can't create debugfs queued_reqs\n"); goto err1; } file = debugfs_create_file("int_events", S_IRUGO | S_IWUSR, root, dwc, &dwc3_gadget_dbg_events_fops); if (!file) { dev_dbg(dwc->dev, "Can't create debugfs int_events\n"); goto err1; } dwc->dwc_ipc_log_ctxt = ipc_log_context_create(NUM_LOG_PAGES, dev_name(dwc->dev), 0); if (!dwc->dwc_ipc_log_ctxt) { dev_err(dwc->dev, "Error getting ipc_log_ctxt\n"); goto err1; } dbg_dwc3_data[count] = dwc; count++; return 0; err1: kfree(dwc->regset); dwc->regset = NULL; debugfs_remove_recursive(root); return -ENOMEM; } void dwc3_debugfs_exit(struct dwc3 *dwc) { debugfs_remove_recursive(dwc->root); dwc->root = NULL; kfree(dwc->regset); dwc->regset = NULL; ipc_log_context_destroy(dwc->dwc_ipc_log_ctxt); dwc->dwc_ipc_log_ctxt = NULL; }