// 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 * * Authors: Felipe Balbi , * Sebastian Andrzej Siewior */ #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, \ } #define dump_ep_register_set(n) \ { \ .name = "DEPCMDPAR2("__stringify(n)")", \ .offset = DWC3_DEP_BASE(n) + \ DWC3_DEPCMDPAR2, \ }, \ { \ .name = "DEPCMDPAR1("__stringify(n)")", \ .offset = DWC3_DEP_BASE(n) + \ DWC3_DEPCMDPAR1, \ }, \ { \ .name = "DEPCMDPAR0("__stringify(n)")", \ .offset = DWC3_DEP_BASE(n) + \ DWC3_DEPCMDPAR0, \ }, \ { \ .name = "DEPCMD("__stringify(n)")", \ .offset = DWC3_DEP_BASE(n) + \ DWC3_DEPCMD, \ } #define ep_event_rate(ev, c, p, dt) \ ((dt) ? ((c.ev - p.ev) * (MSEC_PER_SEC)) / (dt) : 0) static const struct debugfs_reg32 dwc3_regs[] = { dump_register(GSBUSCFG0), dump_register(GSBUSCFG1), dump_register(GTXTHRCFG), dump_register(GRXTHRCFG), dump_register(GCTL), dump_register(GEVTEN), dump_register(GSTS), dump_register(GUCTL1), dump_register(GSNPSID), dump_register(GGPIO), dump_register(GUID), dump_register(GUCTL), dump_register(GBUSERRADDR0), dump_register(GBUSERRADDR1), dump_register(GPRTBIMAP0), dump_register(GPRTBIMAP1), dump_register(GHWPARAMS0), dump_register(GHWPARAMS1), dump_register(GHWPARAMS2), dump_register(GHWPARAMS3), dump_register(GHWPARAMS4), dump_register(GHWPARAMS5), dump_register(GHWPARAMS6), dump_register(GHWPARAMS7), dump_register(GDBGFIFOSPACE), dump_register(GDBGLTSSM), dump_register(GDBGBMU), dump_register(GDBGLSPMUX), dump_register(GDBGLSP), dump_register(GDBGEPINFO0), dump_register(GDBGEPINFO1), dump_register(GPRTBIMAP_HS0), dump_register(GPRTBIMAP_HS1), dump_register(GPRTBIMAP_FS0), dump_register(GPRTBIMAP_FS1), dump_register(GUSB2PHYCFG(0)), dump_register(GUSB2PHYCFG(1)), dump_register(GUSB2PHYCFG(2)), dump_register(GUSB2PHYCFG(3)), dump_register(GUSB2PHYCFG(4)), dump_register(GUSB2PHYCFG(5)), dump_register(GUSB2PHYCFG(6)), dump_register(GUSB2PHYCFG(7)), dump_register(GUSB2PHYCFG(8)), dump_register(GUSB2PHYCFG(9)), dump_register(GUSB2PHYCFG(10)), dump_register(GUSB2PHYCFG(11)), dump_register(GUSB2PHYCFG(12)), dump_register(GUSB2PHYCFG(13)), dump_register(GUSB2PHYCFG(14)), dump_register(GUSB2PHYCFG(15)), dump_register(GUSB2I2CCTL(0)), dump_register(GUSB2I2CCTL(1)), dump_register(GUSB2I2CCTL(2)), dump_register(GUSB2I2CCTL(3)), dump_register(GUSB2I2CCTL(4)), dump_register(GUSB2I2CCTL(5)), dump_register(GUSB2I2CCTL(6)), dump_register(GUSB2I2CCTL(7)), dump_register(GUSB2I2CCTL(8)), dump_register(GUSB2I2CCTL(9)), dump_register(GUSB2I2CCTL(10)), dump_register(GUSB2I2CCTL(11)), dump_register(GUSB2I2CCTL(12)), dump_register(GUSB2I2CCTL(13)), dump_register(GUSB2I2CCTL(14)), dump_register(GUSB2I2CCTL(15)), dump_register(GUSB2PHYACC(0)), dump_register(GUSB2PHYACC(1)), dump_register(GUSB2PHYACC(2)), dump_register(GUSB2PHYACC(3)), dump_register(GUSB2PHYACC(4)), dump_register(GUSB2PHYACC(5)), dump_register(GUSB2PHYACC(6)), dump_register(GUSB2PHYACC(7)), dump_register(GUSB2PHYACC(8)), dump_register(GUSB2PHYACC(9)), dump_register(GUSB2PHYACC(10)), dump_register(GUSB2PHYACC(11)), dump_register(GUSB2PHYACC(12)), dump_register(GUSB2PHYACC(13)), dump_register(GUSB2PHYACC(14)), dump_register(GUSB2PHYACC(15)), dump_register(GUSB3PIPECTL(0)), dump_register(GUSB3PIPECTL(1)), dump_register(GUSB3PIPECTL(2)), dump_register(GUSB3PIPECTL(3)), dump_register(GUSB3PIPECTL(4)), dump_register(GUSB3PIPECTL(5)), dump_register(GUSB3PIPECTL(6)), dump_register(GUSB3PIPECTL(7)), dump_register(GUSB3PIPECTL(8)), dump_register(GUSB3PIPECTL(9)), dump_register(GUSB3PIPECTL(10)), dump_register(GUSB3PIPECTL(11)), dump_register(GUSB3PIPECTL(12)), dump_register(GUSB3PIPECTL(13)), dump_register(GUSB3PIPECTL(14)), dump_register(GUSB3PIPECTL(15)), dump_register(GTXFIFOSIZ(0)), dump_register(GTXFIFOSIZ(1)), dump_register(GTXFIFOSIZ(2)), dump_register(GTXFIFOSIZ(3)), dump_register(GTXFIFOSIZ(4)), dump_register(GTXFIFOSIZ(5)), dump_register(GTXFIFOSIZ(6)), dump_register(GTXFIFOSIZ(7)), dump_register(GTXFIFOSIZ(8)), dump_register(GTXFIFOSIZ(9)), dump_register(GTXFIFOSIZ(10)), dump_register(GTXFIFOSIZ(11)), dump_register(GTXFIFOSIZ(12)), dump_register(GTXFIFOSIZ(13)), dump_register(GTXFIFOSIZ(14)), dump_register(GTXFIFOSIZ(15)), dump_register(GTXFIFOSIZ(16)), dump_register(GTXFIFOSIZ(17)), dump_register(GTXFIFOSIZ(18)), dump_register(GTXFIFOSIZ(19)), dump_register(GTXFIFOSIZ(20)), dump_register(GTXFIFOSIZ(21)), dump_register(GTXFIFOSIZ(22)), dump_register(GTXFIFOSIZ(23)), dump_register(GTXFIFOSIZ(24)), dump_register(GTXFIFOSIZ(25)), dump_register(GTXFIFOSIZ(26)), dump_register(GTXFIFOSIZ(27)), dump_register(GTXFIFOSIZ(28)), dump_register(GTXFIFOSIZ(29)), dump_register(GTXFIFOSIZ(30)), dump_register(GTXFIFOSIZ(31)), dump_register(GRXFIFOSIZ(0)), dump_register(GRXFIFOSIZ(1)), dump_register(GRXFIFOSIZ(2)), dump_register(GRXFIFOSIZ(3)), dump_register(GRXFIFOSIZ(4)), dump_register(GRXFIFOSIZ(5)), dump_register(GRXFIFOSIZ(6)), dump_register(GRXFIFOSIZ(7)), dump_register(GRXFIFOSIZ(8)), dump_register(GRXFIFOSIZ(9)), dump_register(GRXFIFOSIZ(10)), dump_register(GRXFIFOSIZ(11)), dump_register(GRXFIFOSIZ(12)), dump_register(GRXFIFOSIZ(13)), dump_register(GRXFIFOSIZ(14)), dump_register(GRXFIFOSIZ(15)), dump_register(GRXFIFOSIZ(16)), dump_register(GRXFIFOSIZ(17)), dump_register(GRXFIFOSIZ(18)), dump_register(GRXFIFOSIZ(19)), dump_register(GRXFIFOSIZ(20)), dump_register(GRXFIFOSIZ(21)), dump_register(GRXFIFOSIZ(22)), dump_register(GRXFIFOSIZ(23)), dump_register(GRXFIFOSIZ(24)), dump_register(GRXFIFOSIZ(25)), dump_register(GRXFIFOSIZ(26)), dump_register(GRXFIFOSIZ(27)), dump_register(GRXFIFOSIZ(28)), dump_register(GRXFIFOSIZ(29)), dump_register(GRXFIFOSIZ(30)), dump_register(GRXFIFOSIZ(31)), dump_register(GEVNTADRLO(0)), dump_register(GEVNTADRHI(0)), dump_register(GEVNTSIZ(0)), dump_register(GEVNTCOUNT(0)), dump_register(GHWPARAMS8), dump_register(DCFG), dump_register(DCTL), dump_register(DEVTEN), dump_register(DSTS), dump_register(DGCMDPAR), dump_register(DGCMD), dump_register(DALEPENA), dump_ep_register_set(0), dump_ep_register_set(1), dump_ep_register_set(2), dump_ep_register_set(3), dump_ep_register_set(4), dump_ep_register_set(5), dump_ep_register_set(6), dump_ep_register_set(7), dump_ep_register_set(8), dump_ep_register_set(9), dump_ep_register_set(10), dump_ep_register_set(11), dump_ep_register_set(12), dump_ep_register_set(13), dump_ep_register_set(14), dump_ep_register_set(15), dump_ep_register_set(16), dump_ep_register_set(17), dump_ep_register_set(18), dump_ep_register_set(19), dump_ep_register_set(20), dump_ep_register_set(21), dump_ep_register_set(22), dump_ep_register_set(23), dump_ep_register_set(24), dump_ep_register_set(25), dump_ep_register_set(26), dump_ep_register_set(27), dump_ep_register_set(28), dump_ep_register_set(29), dump_ep_register_set(30), dump_ep_register_set(31), dump_register(OCFG), dump_register(OCTL), dump_register(OEVT), dump_register(OEVTEN), dump_register(OSTS), }; static int dwc3_regdump_show(struct seq_file *s, void *unused) { struct dwc3 *dwc = s->private; if (atomic_read(&dwc->in_lpm)) { seq_puts(s, "USB device is powered off\n"); return 0; } debugfs_print_regs32(s, dwc->regset->regs, dwc->regset->nregs, dwc->regset->base, ""); return 0; } static int dwc3_regdump_open(struct inode *inode, struct file *file) { return single_open(file, dwc3_regdump_show, inode->i_private); } static const struct file_operations dwc3_regdump_fops = { .open = dwc3_regdump_open, .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; if (atomic_read(&dwc->in_lpm)) { seq_puts(s, "USB device is powered off\n"); return 0; } spin_lock_irqsave(&dwc->lock, flags); reg = dwc3_readl(dwc->regs, DWC3_GCTL); spin_unlock_irqrestore(&dwc->lock, flags); switch (DWC3_GCTL_PRTCAP(reg)) { case DWC3_GCTL_PRTCAP_HOST: seq_printf(s, "host\n"); break; case DWC3_GCTL_PRTCAP_DEVICE: seq_printf(s, "device\n"); break; case DWC3_GCTL_PRTCAP_OTG: seq_printf(s, "otg\n"); break; default: seq_printf(s, "UNKNOWN %08x\n", DWC3_GCTL_PRTCAP(reg)); } return 0; } static int dwc3_mode_open(struct inode *inode, struct file *file) { return single_open(file, dwc3_mode_show, inode->i_private); } static ssize_t dwc3_mode_write(struct file *file, const char __user *ubuf, size_t count, loff_t *ppos) { struct seq_file *s = file->private_data; struct dwc3 *dwc = s->private; u32 mode = 0; char buf[32] = {}; if (atomic_read(&dwc->in_lpm)) { dev_err(dwc->dev, "USB device is powered off\n"); return count; } if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) return -EFAULT; if (!strncmp(buf, "host", 4)) mode = DWC3_GCTL_PRTCAP_HOST; if (!strncmp(buf, "device", 6)) mode = DWC3_GCTL_PRTCAP_DEVICE; if (!strncmp(buf, "otg", 3)) mode = DWC3_GCTL_PRTCAP_OTG; 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; if (atomic_read(&dwc->in_lpm)) { seq_puts(s, "USB device is powered off\n"); return 0; } spin_lock_irqsave(&dwc->lock, flags); reg = dwc3_readl(dwc->regs, DWC3_DCTL); reg &= DWC3_DCTL_TSTCTRL_MASK; reg >>= 1; spin_unlock_irqrestore(&dwc->lock, flags); switch (reg) { case 0: seq_printf(s, "no test\n"); break; case TEST_J: seq_printf(s, "test_j\n"); break; case TEST_K: seq_printf(s, "test_k\n"); break; case TEST_SE0_NAK: seq_printf(s, "test_se0_nak\n"); break; case TEST_PACKET: seq_printf(s, "test_packet\n"); break; case TEST_FORCE_EN: seq_printf(s, "test_force_enable\n"); break; default: seq_printf(s, "UNKNOWN %d\n", reg); } return 0; } static int dwc3_testmode_open(struct inode *inode, struct file *file) { return single_open(file, dwc3_testmode_show, inode->i_private); } static ssize_t dwc3_testmode_write(struct file *file, const char __user *ubuf, size_t count, loff_t *ppos) { struct seq_file *s = file->private_data; struct dwc3 *dwc = s->private; unsigned long flags; u32 testmode = 0; char buf[32] = {}; if (atomic_read(&dwc->in_lpm)) { seq_puts(s, "USB device is powered off\n"); return 0; } if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) return -EFAULT; if (!strncmp(buf, "test_j", 6)) testmode = TEST_J; else if (!strncmp(buf, "test_k", 6)) testmode = TEST_K; else if (!strncmp(buf, "test_se0_nak", 12)) testmode = TEST_SE0_NAK; else if (!strncmp(buf, "test_packet", 11)) testmode = TEST_PACKET; else if (!strncmp(buf, "test_force_enable", 17)) testmode = TEST_FORCE_EN; else testmode = 0; spin_lock_irqsave(&dwc->lock, flags); dwc3_gadget_set_test_mode(dwc, testmode); spin_unlock_irqrestore(&dwc->lock, flags); return count; } static const struct file_operations dwc3_testmode_fops = { .open = dwc3_testmode_open, .write = dwc3_testmode_write, .read = seq_read, .llseek = seq_lseek, .release = single_release, }; static int dwc3_link_state_show(struct seq_file *s, void *unused) { struct dwc3 *dwc = s->private; unsigned long flags; enum dwc3_link_state state; u32 reg; u8 speed; if (atomic_read(&dwc->in_lpm)) { seq_puts(s, "USB device is powered off\n"); return 0; } spin_lock_irqsave(&dwc->lock, flags); reg = dwc3_readl(dwc->regs, DWC3_DSTS); state = DWC3_DSTS_USBLNKST(reg); 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 (atomic_read(&dwc->in_lpm)) { seq_puts(s, "USB device is powered off\n"); return 0; } if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) return -EFAULT; if (!strncmp(buf, "SS.Disabled", 11)) state = DWC3_LINK_STATE_SS_DIS; else if (!strncmp(buf, "Rx.Detect", 9)) state = DWC3_LINK_STATE_RX_DET; else if (!strncmp(buf, "SS.Inactive", 11)) state = DWC3_LINK_STATE_SS_INACT; else if (!strncmp(buf, "Recovery", 8)) state = DWC3_LINK_STATE_RECOV; else if (!strncmp(buf, "Compliance", 10)) state = DWC3_LINK_STATE_CMPLY; else if (!strncmp(buf, "Loopback", 8)) state = DWC3_LINK_STATE_LPBK; else return -EINVAL; spin_lock_irqsave(&dwc->lock, flags); 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_queue_show(struct seq_file *s, void *unused) { struct dwc3_ep *dep = s->private; struct dwc3 *dwc = dep->dwc; unsigned long flags; u32 val; if (atomic_read(&dwc->in_lpm)) { seq_puts(s, "USB device is powered off\n"); return 0; } spin_lock_irqsave(&dwc->lock, flags); val = dwc3_core_fifo_space(dep, DWC3_TXFIFOQ); seq_printf(s, "%u\n", val); spin_unlock_irqrestore(&dwc->lock, flags); return 0; } static int dwc3_rx_fifo_queue_show(struct seq_file *s, void *unused) { struct dwc3_ep *dep = s->private; struct dwc3 *dwc = dep->dwc; unsigned long flags; u32 val; if (atomic_read(&dwc->in_lpm)) { seq_puts(s, "USB device is powered off\n"); return 0; } spin_lock_irqsave(&dwc->lock, flags); val = dwc3_core_fifo_space(dep, DWC3_RXFIFOQ); seq_printf(s, "%u\n", val); spin_unlock_irqrestore(&dwc->lock, flags); return 0; } static int dwc3_tx_request_queue_show(struct seq_file *s, void *unused) { struct dwc3_ep *dep = s->private; struct dwc3 *dwc = dep->dwc; unsigned long flags; u32 val; if (atomic_read(&dwc->in_lpm)) { seq_puts(s, "USB device is powered off\n"); return 0; } spin_lock_irqsave(&dwc->lock, flags); val = dwc3_core_fifo_space(dep, DWC3_TXREQQ); seq_printf(s, "%u\n", val); spin_unlock_irqrestore(&dwc->lock, flags); return 0; } static int dwc3_rx_request_queue_show(struct seq_file *s, void *unused) { struct dwc3_ep *dep = s->private; struct dwc3 *dwc = dep->dwc; unsigned long flags; u32 val; if (atomic_read(&dwc->in_lpm)) { seq_puts(s, "USB device is powered off\n"); return 0; } spin_lock_irqsave(&dwc->lock, flags); val = dwc3_core_fifo_space(dep, DWC3_RXREQQ); seq_printf(s, "%u\n", val); spin_unlock_irqrestore(&dwc->lock, flags); return 0; } static int dwc3_rx_info_queue_show(struct seq_file *s, void *unused) { struct dwc3_ep *dep = s->private; struct dwc3 *dwc = dep->dwc; unsigned long flags; u32 val; if (atomic_read(&dwc->in_lpm)) { seq_puts(s, "USB device is powered off\n"); return 0; } spin_lock_irqsave(&dwc->lock, flags); val = dwc3_core_fifo_space(dep, DWC3_RXINFOQ); seq_printf(s, "%u\n", val); spin_unlock_irqrestore(&dwc->lock, flags); return 0; } static int dwc3_descriptor_fetch_queue_show(struct seq_file *s, void *unused) { struct dwc3_ep *dep = s->private; struct dwc3 *dwc = dep->dwc; unsigned long flags; u32 val; if (atomic_read(&dwc->in_lpm)) { seq_puts(s, "USB device is powered off\n"); return 0; } spin_lock_irqsave(&dwc->lock, flags); val = dwc3_core_fifo_space(dep, DWC3_DESCFETCHQ); seq_printf(s, "%u\n", val); spin_unlock_irqrestore(&dwc->lock, flags); return 0; } static int dwc3_event_queue_show(struct seq_file *s, void *unused) { struct dwc3_ep *dep = s->private; struct dwc3 *dwc = dep->dwc; unsigned long flags; u32 val; if (atomic_read(&dwc->in_lpm)) { seq_puts(s, "USB device is powered off\n"); return 0; } spin_lock_irqsave(&dwc->lock, flags); val = dwc3_core_fifo_space(dep, DWC3_EVENTQ); seq_printf(s, "%u\n", val); spin_unlock_irqrestore(&dwc->lock, flags); return 0; } static int dwc3_transfer_type_show(struct seq_file *s, void *unused) { struct dwc3_ep *dep = s->private; struct dwc3 *dwc = dep->dwc; unsigned long flags; spin_lock_irqsave(&dwc->lock, flags); if (!(dep->flags & DWC3_EP_ENABLED) || !dep->endpoint.desc) { seq_printf(s, "--\n"); goto out; } switch (usb_endpoint_type(dep->endpoint.desc)) { case USB_ENDPOINT_XFER_CONTROL: seq_printf(s, "control\n"); break; case USB_ENDPOINT_XFER_ISOC: seq_printf(s, "isochronous\n"); break; case USB_ENDPOINT_XFER_BULK: seq_printf(s, "bulk\n"); break; case USB_ENDPOINT_XFER_INT: seq_printf(s, "interrupt\n"); break; default: seq_printf(s, "--\n"); } out: spin_unlock_irqrestore(&dwc->lock, flags); return 0; } static 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_printf(s, "--\n"); goto out; } seq_printf(s, "buffer_addr,size,type,ioc,isp_imi,csp,chn,lst,hwo\n"); for (i = 0; i < DWC3_TRB_NUM; i++) { struct dwc3_trb *trb = &dep->trb_pool[i]; 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; } DEFINE_SHOW_ATTRIBUTE(dwc3_tx_fifo_queue); DEFINE_SHOW_ATTRIBUTE(dwc3_rx_fifo_queue); 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); static const struct dwc3_ep_file_map dwc3_ep_file_map[] = { { "tx_fifo_queue", &dwc3_tx_fifo_queue_fops, }, { "rx_fifo_queue", &dwc3_rx_fifo_queue_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, }, }; 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, S_IRUGO, parent, dep, fops); } } static void dwc3_debugfs_create_endpoint_dir(struct dwc3_ep *dep, struct dentry *parent) { struct dentry *dir; dir = debugfs_create_dir(dep->name, parent); if (!dir) { pr_err("%s: failed to create dir %s\n", __func__, dep->name); return; } dwc3_debugfs_create_endpoint_files(dep, dir); } static void dwc3_debugfs_create_endpoint_dirs(struct dwc3 *dwc, struct dentry *parent) { int i; for (i = 0; i < dwc->num_eps; i++) { struct dwc3_ep *dep = dwc->eps[i]; if (!dep) continue; dwc3_debugfs_create_endpoint_dir(dep, parent); } } static ssize_t dwc3_store_int_events(struct file *file, const char __user *ubuf, size_t count, loff_t *ppos) { int i, ret; unsigned long flags; struct seq_file *s = file->private_data; struct dwc3 *dwc = s->private; struct dwc3_ep *dep; struct timespec ts; u8 clear_stats; if (ubuf == NULL) { pr_err("[%s] EINVAL\n", __func__); ret = -EINVAL; return ret; } ret = kstrtou8_from_user(ubuf, count, 0, &clear_stats); if (ret < 0) { pr_err("can't get enter value.\n"); return ret; } if (clear_stats != 0) { pr_err("Wrong value. To clear stats, enter value as 0.\n"); ret = -EINVAL; return ret; } pr_debug("%s(): clearing debug interrupt buffers\n", __func__); spin_lock_irqsave(&dwc->lock, flags); ts = current_kernel_time(); for (i = 0; i < DWC3_ENDPOINTS_NUM; i++) { dep = dwc->eps[i]; memset(&dep->dbg_ep_events, 0, sizeof(dep->dbg_ep_events)); memset(&dep->dbg_ep_events_diff, 0, sizeof(dep->dbg_ep_events)); dep->dbg_ep_events_ts = ts; } memset(&dwc->dbg_gadget_events, 0, sizeof(dwc->dbg_gadget_events)); spin_unlock_irqrestore(&dwc->lock, flags); return count; } static int dwc3_gadget_int_events_show(struct seq_file *s, void *unused) { unsigned long flags; struct dwc3 *dwc = s->private; struct dwc3_gadget_events *dbg_gadget_events; struct dwc3_ep *dep; int i; struct timespec ts_delta; struct timespec ts_current; u32 ts_delta_ms; spin_lock_irqsave(&dwc->lock, flags); dbg_gadget_events = &dwc->dbg_gadget_events; for (i = 0; i < DWC3_ENDPOINTS_NUM; i++) { dep = dwc->eps[i]; if (dep == NULL || !(dep->flags & DWC3_EP_ENABLED)) continue; ts_current = current_kernel_time(); ts_delta = timespec_sub(ts_current, dep->dbg_ep_events_ts); ts_delta_ms = ts_delta.tv_nsec / NSEC_PER_MSEC + ts_delta.tv_sec * MSEC_PER_SEC; seq_printf(s, "\n\n===== dbg_ep_events for EP(%d) %s =====\n", i, dep->name); seq_printf(s, "xfercomplete:%u @ %luHz\n", dep->dbg_ep_events.xfercomplete, ep_event_rate(xfercomplete, dep->dbg_ep_events, dep->dbg_ep_events_diff, ts_delta_ms)); seq_printf(s, "xfernotready:%u @ %luHz\n", dep->dbg_ep_events.xfernotready, ep_event_rate(xfernotready, dep->dbg_ep_events, dep->dbg_ep_events_diff, ts_delta_ms)); seq_printf(s, "control_data:%u @ %luHz\n", dep->dbg_ep_events.control_data, ep_event_rate(control_data, dep->dbg_ep_events, dep->dbg_ep_events_diff, ts_delta_ms)); seq_printf(s, "control_status:%u @ %luHz\n", dep->dbg_ep_events.control_status, ep_event_rate(control_status, dep->dbg_ep_events, dep->dbg_ep_events_diff, ts_delta_ms)); seq_printf(s, "xferinprogress:%u @ %luHz\n", dep->dbg_ep_events.xferinprogress, ep_event_rate(xferinprogress, dep->dbg_ep_events, dep->dbg_ep_events_diff, ts_delta_ms)); seq_printf(s, "rxtxfifoevent:%u @ %luHz\n", dep->dbg_ep_events.rxtxfifoevent, ep_event_rate(rxtxfifoevent, dep->dbg_ep_events, dep->dbg_ep_events_diff, ts_delta_ms)); seq_printf(s, "streamevent:%u @ %luHz\n", dep->dbg_ep_events.streamevent, ep_event_rate(streamevent, dep->dbg_ep_events, dep->dbg_ep_events_diff, ts_delta_ms)); seq_printf(s, "epcmdcomplt:%u @ %luHz\n", dep->dbg_ep_events.epcmdcomplete, ep_event_rate(epcmdcomplete, dep->dbg_ep_events, dep->dbg_ep_events_diff, ts_delta_ms)); seq_printf(s, "unknown:%u @ %luHz\n", dep->dbg_ep_events.unknown_event, ep_event_rate(unknown_event, dep->dbg_ep_events, dep->dbg_ep_events_diff, ts_delta_ms)); seq_printf(s, "total:%u @ %luHz\n", dep->dbg_ep_events.total, ep_event_rate(total, dep->dbg_ep_events, dep->dbg_ep_events_diff, ts_delta_ms)); dep->dbg_ep_events_ts = ts_current; dep->dbg_ep_events_diff = dep->dbg_ep_events; } seq_puts(s, "\n=== dbg_gadget events ==\n"); seq_printf(s, "disconnect:%u\n reset:%u\n", dbg_gadget_events->disconnect, dbg_gadget_events->reset); seq_printf(s, "connect:%u\n wakeup:%u\n", dbg_gadget_events->connect, dbg_gadget_events->wakeup); seq_printf(s, "link_status_change:%u\n eopf:%u\n", dbg_gadget_events->link_status_change, dbg_gadget_events->eopf); seq_printf(s, "sof:%u\n suspend:%u\n", dbg_gadget_events->sof, dbg_gadget_events->suspend); seq_printf(s, "erratic_error:%u\n overflow:%u\n", dbg_gadget_events->erratic_error, dbg_gadget_events->overflow); seq_printf(s, "vendor_dev_test_lmp:%u\n cmdcmplt:%u\n", dbg_gadget_events->vendor_dev_test_lmp, dbg_gadget_events->cmdcmplt); seq_printf(s, "unknown_event:%u\n", dbg_gadget_events->unknown_event); seq_printf(s, "\n\t== Last %d interrupts stats ==\t\n", MAX_INTR_STATS); seq_puts(s, "@ time (us):\t"); for (i = 0; i < MAX_INTR_STATS; i++) seq_printf(s, "%lld\t", ktime_to_us(dwc->irq_start_time[i])); seq_puts(s, "\nhard irq time (us):\t"); for (i = 0; i < MAX_INTR_STATS; i++) seq_printf(s, "%d\t", dwc->irq_completion_time[i]); seq_puts(s, "\nevents count:\t\t"); for (i = 0; i < MAX_INTR_STATS; i++) seq_printf(s, "%d\t", dwc->irq_event_count[i]); seq_puts(s, "\nbh handled count:\t"); for (i = 0; i < MAX_INTR_STATS; i++) seq_printf(s, "%d\t", dwc->bh_handled_evt_cnt[i]); seq_puts(s, "\nirq thread time (us):\t"); for (i = 0; i < MAX_INTR_STATS; i++) seq_printf(s, "%d\t", dwc->bh_completion_time[i]); seq_putc(s, '\n'); seq_printf(s, "t_pwr evt irq : %lld\n", ktime_to_us(dwc->t_pwr_evt_irq)); seq_printf(s, "l1_remote_wakeup_cnt : %lu\n", dwc->l1_remote_wakeup_cnt); spin_unlock_irqrestore(&dwc->lock, flags); return 0; } static int dwc3_gadget_events_open(struct inode *inode, struct file *f) { return single_open(f, dwc3_gadget_int_events_show, inode->i_private); } const struct file_operations dwc3_gadget_dbg_events_fops = { .open = dwc3_gadget_events_open, .read = seq_read, .write = dwc3_store_int_events, .llseek = seq_lseek, .release = single_release, }; void dwc3_debugfs_init(struct dwc3 *dwc) { struct dentry *root; struct dentry *file; dwc->regset = kzalloc(sizeof(*dwc->regset), GFP_KERNEL); if (!dwc->regset) return; 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), NULL); if (!root) { pr_err("%s: failed to create dir %s\n", __func__, dev_name(dwc->dev)); return; } dwc->root = root; debugfs_create_file("regdump", 0444, root, dwc, &dwc3_regdump_fops); if (IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE)) { debugfs_create_file("mode", S_IRUGO | S_IWUSR, root, dwc, &dwc3_mode_fops); } if (IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE) || IS_ENABLED(CONFIG_USB_DWC3_GADGET)) { debugfs_create_file("testmode", S_IRUGO | S_IWUSR, root, dwc, &dwc3_testmode_fops); debugfs_create_file("link_state", S_IRUGO | S_IWUSR, root, dwc, &dwc3_link_state_fops); dwc3_debugfs_create_endpoint_dirs(dwc, root); file = debugfs_create_file("int_events", 0644, root, dwc, &dwc3_gadget_dbg_events_fops); if (!file) dev_dbg(dwc->dev, "Can't create debugfs int_events\n"); } } void dwc3_debugfs_exit(struct dwc3 *dwc) { debugfs_remove_recursive(dwc->root); kfree(dwc->regset); }