541 lines
14 KiB
C
541 lines
14 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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/*
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* mtu3_debugfs.c - debugfs interface
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*
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* Copyright (C) 2019 MediaTek Inc.
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*
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* Author: Chunfeng Yun <chunfeng.yun@mediatek.com>
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*/
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#include <linux/uaccess.h>
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#include "mtu3.h"
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#include "mtu3_dr.h"
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#include "mtu3_debug.h"
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#define dump_register(nm) \
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{ \
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.name = __stringify(nm), \
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.offset = U3D_ ##nm, \
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}
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#define dump_prb_reg(nm, os) \
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{ \
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.name = nm, \
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.offset = os, \
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}
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static const struct debugfs_reg32 mtu3_ippc_regs[] = {
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dump_register(SSUSB_IP_PW_CTRL0),
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dump_register(SSUSB_IP_PW_CTRL1),
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dump_register(SSUSB_IP_PW_CTRL2),
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dump_register(SSUSB_IP_PW_CTRL3),
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dump_register(SSUSB_IP_PW_STS1),
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dump_register(SSUSB_OTG_STS),
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dump_register(SSUSB_IP_XHCI_CAP),
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dump_register(SSUSB_IP_DEV_CAP),
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dump_register(SSUSB_U3_CTRL_0P),
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dump_register(SSUSB_U2_CTRL_0P),
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dump_register(SSUSB_HW_ID),
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dump_register(SSUSB_HW_SUB_ID),
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dump_register(SSUSB_IP_SPARE0),
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};
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static const struct debugfs_reg32 mtu3_dev_regs[] = {
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dump_register(LV1ISR),
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dump_register(LV1IER),
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dump_register(EPISR),
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dump_register(EPIER),
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dump_register(EP0CSR),
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dump_register(RXCOUNT0),
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dump_register(QISAR0),
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dump_register(QIER0),
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dump_register(QISAR1),
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dump_register(QIER1),
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dump_register(CAP_EPNTXFFSZ),
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dump_register(CAP_EPNRXFFSZ),
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dump_register(CAP_EPINFO),
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dump_register(MISC_CTRL),
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};
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static const struct debugfs_reg32 mtu3_csr_regs[] = {
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dump_register(DEVICE_CONF),
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dump_register(DEV_LINK_INTR_ENABLE),
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dump_register(DEV_LINK_INTR),
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dump_register(LTSSM_CTRL),
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dump_register(USB3_CONFIG),
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dump_register(LINK_STATE_MACHINE),
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dump_register(LTSSM_INTR_ENABLE),
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dump_register(LTSSM_INTR),
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dump_register(U3U2_SWITCH_CTRL),
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dump_register(POWER_MANAGEMENT),
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dump_register(DEVICE_CONTROL),
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dump_register(COMMON_USB_INTR_ENABLE),
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dump_register(COMMON_USB_INTR),
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dump_register(USB20_MISC_CONTROL),
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dump_register(USB20_OPSTATE),
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};
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static int mtu3_link_state_show(struct seq_file *sf, void *unused)
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{
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struct mtu3 *mtu = sf->private;
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void __iomem *mbase = mtu->mac_base;
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seq_printf(sf, "opstate: %#x, ltssm: %#x\n",
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mtu3_readl(mbase, U3D_USB20_OPSTATE),
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LTSSM_STATE(mtu3_readl(mbase, U3D_LINK_STATE_MACHINE)));
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return 0;
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}
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static int mtu3_ep_used_show(struct seq_file *sf, void *unused)
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{
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struct mtu3 *mtu = sf->private;
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struct mtu3_ep *mep;
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unsigned long flags;
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int used = 0;
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int i;
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spin_lock_irqsave(&mtu->lock, flags);
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for (i = 0; i < mtu->num_eps; i++) {
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mep = mtu->in_eps + i;
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if (mep->flags & MTU3_EP_ENABLED) {
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seq_printf(sf, "%s - type: %s\n", mep->name, usb_ep_type_string(mep->type));
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used++;
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}
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mep = mtu->out_eps + i;
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if (mep->flags & MTU3_EP_ENABLED) {
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seq_printf(sf, "%s - type: %s\n", mep->name, usb_ep_type_string(mep->type));
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used++;
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}
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}
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seq_printf(sf, "total used: %d eps\n", used);
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spin_unlock_irqrestore(&mtu->lock, flags);
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return 0;
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}
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DEFINE_SHOW_ATTRIBUTE(mtu3_link_state);
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DEFINE_SHOW_ATTRIBUTE(mtu3_ep_used);
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static void mtu3_debugfs_regset(struct mtu3 *mtu, void __iomem *base,
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const struct debugfs_reg32 *regs, size_t nregs,
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const char *name, struct dentry *parent)
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{
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struct debugfs_regset32 *regset;
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struct mtu3_regset *mregs;
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mregs = devm_kzalloc(mtu->dev, sizeof(*mregs), GFP_KERNEL);
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if (!mregs)
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return;
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sprintf(mregs->name, "%s", name);
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regset = &mregs->regset;
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regset->regs = regs;
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regset->nregs = nregs;
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regset->base = base;
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debugfs_create_regset32(mregs->name, 0444, parent, regset);
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}
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static void mtu3_debugfs_ep_regset(struct mtu3 *mtu, struct mtu3_ep *mep,
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struct dentry *parent)
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{
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struct debugfs_reg32 *regs;
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int epnum = mep->epnum;
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int in = mep->is_in;
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regs = devm_kcalloc(mtu->dev, 7, sizeof(*regs), GFP_KERNEL);
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if (!regs)
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return;
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regs[0].name = in ? "TCR0" : "RCR0";
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regs[0].offset = in ? MU3D_EP_TXCR0(epnum) : MU3D_EP_RXCR0(epnum);
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regs[1].name = in ? "TCR1" : "RCR1";
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regs[1].offset = in ? MU3D_EP_TXCR1(epnum) : MU3D_EP_RXCR1(epnum);
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regs[2].name = in ? "TCR2" : "RCR2";
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regs[2].offset = in ? MU3D_EP_TXCR2(epnum) : MU3D_EP_RXCR2(epnum);
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regs[3].name = in ? "TQHIAR" : "RQHIAR";
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regs[3].offset = in ? USB_QMU_TQHIAR(epnum) : USB_QMU_RQHIAR(epnum);
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regs[4].name = in ? "TQCSR" : "RQCSR";
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regs[4].offset = in ? USB_QMU_TQCSR(epnum) : USB_QMU_RQCSR(epnum);
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regs[5].name = in ? "TQSAR" : "RQSAR";
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regs[5].offset = in ? USB_QMU_TQSAR(epnum) : USB_QMU_RQSAR(epnum);
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regs[6].name = in ? "TQCPR" : "RQCPR";
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regs[6].offset = in ? USB_QMU_TQCPR(epnum) : USB_QMU_RQCPR(epnum);
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mtu3_debugfs_regset(mtu, mtu->mac_base, regs, 7, "ep-regs", parent);
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}
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static int mtu3_ep_info_show(struct seq_file *sf, void *unused)
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{
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struct mtu3_ep *mep = sf->private;
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struct mtu3 *mtu = mep->mtu;
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unsigned long flags;
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spin_lock_irqsave(&mtu->lock, flags);
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seq_printf(sf, "ep - type:%s, maxp:%d, slot:%d, flags:%x\n",
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usb_ep_type_string(mep->type), mep->maxp, mep->slot, mep->flags);
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spin_unlock_irqrestore(&mtu->lock, flags);
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return 0;
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}
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static int mtu3_fifo_show(struct seq_file *sf, void *unused)
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{
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struct mtu3_ep *mep = sf->private;
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struct mtu3 *mtu = mep->mtu;
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unsigned long flags;
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spin_lock_irqsave(&mtu->lock, flags);
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seq_printf(sf, "fifo - seg_size:%d, addr:%d, size:%d\n",
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mep->fifo_seg_size, mep->fifo_addr, mep->fifo_size);
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spin_unlock_irqrestore(&mtu->lock, flags);
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return 0;
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}
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static int mtu3_qmu_ring_show(struct seq_file *sf, void *unused)
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{
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struct mtu3_ep *mep = sf->private;
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struct mtu3 *mtu = mep->mtu;
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struct mtu3_gpd_ring *ring;
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unsigned long flags;
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ring = &mep->gpd_ring;
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spin_lock_irqsave(&mtu->lock, flags);
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seq_printf(sf,
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"qmu-ring - dma:%pad, start:%p, end:%p, enq:%p, dep:%p\n",
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&ring->dma, ring->start, ring->end,
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ring->enqueue, ring->dequeue);
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spin_unlock_irqrestore(&mtu->lock, flags);
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return 0;
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}
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static int mtu3_qmu_gpd_show(struct seq_file *sf, void *unused)
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{
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struct mtu3_ep *mep = sf->private;
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struct mtu3 *mtu = mep->mtu;
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struct mtu3_gpd_ring *ring;
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struct qmu_gpd *gpd;
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dma_addr_t dma;
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unsigned long flags;
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int i;
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spin_lock_irqsave(&mtu->lock, flags);
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ring = &mep->gpd_ring;
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gpd = ring->start;
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if (!gpd || !(mep->flags & MTU3_EP_ENABLED)) {
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seq_puts(sf, "empty!\n");
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goto out;
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}
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for (i = 0; i < MAX_GPD_NUM; i++, gpd++) {
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dma = ring->dma + i * sizeof(*gpd);
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seq_printf(sf, "gpd.%03d -> %pad, %p: %08x %08x %08x %08x\n",
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i, &dma, gpd, gpd->dw0_info, gpd->next_gpd,
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gpd->buffer, gpd->dw3_info);
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}
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out:
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spin_unlock_irqrestore(&mtu->lock, flags);
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return 0;
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}
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static const struct mtu3_file_map mtu3_ep_files[] = {
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{"ep-info", mtu3_ep_info_show, },
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{"fifo", mtu3_fifo_show, },
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{"qmu-ring", mtu3_qmu_ring_show, },
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{"qmu-gpd", mtu3_qmu_gpd_show, },
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};
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static int mtu3_ep_open(struct inode *inode, struct file *file)
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{
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const char *file_name = file_dentry(file)->d_iname;
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const struct mtu3_file_map *f_map;
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int i;
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for (i = 0; i < ARRAY_SIZE(mtu3_ep_files); i++) {
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f_map = &mtu3_ep_files[i];
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if (strcmp(f_map->name, file_name) == 0)
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break;
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}
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return single_open(file, f_map->show, inode->i_private);
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}
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static const struct file_operations mtu3_ep_fops = {
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.open = mtu3_ep_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = single_release,
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};
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static const struct debugfs_reg32 mtu3_prb_regs[] = {
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dump_prb_reg("enable", U3D_SSUSB_PRB_CTRL0),
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dump_prb_reg("byte-sell", U3D_SSUSB_PRB_CTRL1),
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dump_prb_reg("byte-selh", U3D_SSUSB_PRB_CTRL2),
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dump_prb_reg("module-sel", U3D_SSUSB_PRB_CTRL3),
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dump_prb_reg("sw-out", U3D_SSUSB_PRB_CTRL4),
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dump_prb_reg("data", U3D_SSUSB_PRB_CTRL5),
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};
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static int mtu3_probe_show(struct seq_file *sf, void *unused)
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{
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const char *file_name = file_dentry(sf->file)->d_iname;
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struct mtu3 *mtu = sf->private;
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const struct debugfs_reg32 *regs;
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int i;
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for (i = 0; i < ARRAY_SIZE(mtu3_prb_regs); i++) {
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regs = &mtu3_prb_regs[i];
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if (strcmp(regs->name, file_name) == 0)
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break;
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}
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seq_printf(sf, "0x%04x - 0x%08x\n", (u32)regs->offset,
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mtu3_readl(mtu->ippc_base, (u32)regs->offset));
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return 0;
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}
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static int mtu3_probe_open(struct inode *inode, struct file *file)
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{
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return single_open(file, mtu3_probe_show, inode->i_private);
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}
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|
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static ssize_t mtu3_probe_write(struct file *file, const char __user *ubuf,
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|
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size_t count, loff_t *ppos)
|
||
|
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{
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const char *file_name = file_dentry(file)->d_iname;
|
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struct seq_file *sf = file->private_data;
|
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struct mtu3 *mtu = sf->private;
|
||
|
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const struct debugfs_reg32 *regs;
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char buf[32];
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|
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u32 val;
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int i;
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|
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if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
|
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return -EFAULT;
|
||
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|
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|
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if (kstrtou32(buf, 0, &val))
|
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|
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return -EINVAL;
|
||
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|
||
|
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for (i = 0; i < ARRAY_SIZE(mtu3_prb_regs); i++) {
|
||
|
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regs = &mtu3_prb_regs[i];
|
||
|
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|
||
|
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if (strcmp(regs->name, file_name) == 0)
|
||
|
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break;
|
||
|
|
}
|
||
|
|
mtu3_writel(mtu->ippc_base, (u32)regs->offset, val);
|
||
|
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|
||
|
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return count;
|
||
|
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}
|
||
|
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|
||
|
|
static const struct file_operations mtu3_probe_fops = {
|
||
|
|
.open = mtu3_probe_open,
|
||
|
|
.write = mtu3_probe_write,
|
||
|
|
.read = seq_read,
|
||
|
|
.llseek = seq_lseek,
|
||
|
|
.release = single_release,
|
||
|
|
};
|
||
|
|
|
||
|
|
static void mtu3_debugfs_create_prb_files(struct mtu3 *mtu)
|
||
|
|
{
|
||
|
|
struct ssusb_mtk *ssusb = mtu->ssusb;
|
||
|
|
const struct debugfs_reg32 *regs;
|
||
|
|
struct dentry *dir_prb;
|
||
|
|
int i;
|
||
|
|
|
||
|
|
dir_prb = debugfs_create_dir("probe", ssusb->dbgfs_root);
|
||
|
|
|
||
|
|
for (i = 0; i < ARRAY_SIZE(mtu3_prb_regs); i++) {
|
||
|
|
regs = &mtu3_prb_regs[i];
|
||
|
|
debugfs_create_file(regs->name, 0644, dir_prb,
|
||
|
|
mtu, &mtu3_probe_fops);
|
||
|
|
}
|
||
|
|
|
||
|
|
mtu3_debugfs_regset(mtu, mtu->ippc_base, mtu3_prb_regs,
|
||
|
|
ARRAY_SIZE(mtu3_prb_regs), "regs", dir_prb);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void mtu3_debugfs_create_ep_dir(struct mtu3_ep *mep,
|
||
|
|
struct dentry *parent)
|
||
|
|
{
|
||
|
|
const struct mtu3_file_map *files;
|
||
|
|
struct dentry *dir_ep;
|
||
|
|
int i;
|
||
|
|
|
||
|
|
dir_ep = debugfs_create_dir(mep->name, parent);
|
||
|
|
mtu3_debugfs_ep_regset(mep->mtu, mep, dir_ep);
|
||
|
|
|
||
|
|
for (i = 0; i < ARRAY_SIZE(mtu3_ep_files); i++) {
|
||
|
|
files = &mtu3_ep_files[i];
|
||
|
|
|
||
|
|
debugfs_create_file(files->name, 0444, dir_ep,
|
||
|
|
mep, &mtu3_ep_fops);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void mtu3_debugfs_create_ep_dirs(struct mtu3 *mtu)
|
||
|
|
{
|
||
|
|
struct ssusb_mtk *ssusb = mtu->ssusb;
|
||
|
|
struct dentry *dir_eps;
|
||
|
|
int i;
|
||
|
|
|
||
|
|
dir_eps = debugfs_create_dir("eps", ssusb->dbgfs_root);
|
||
|
|
|
||
|
|
for (i = 1; i < mtu->num_eps; i++) {
|
||
|
|
mtu3_debugfs_create_ep_dir(mtu->in_eps + i, dir_eps);
|
||
|
|
mtu3_debugfs_create_ep_dir(mtu->out_eps + i, dir_eps);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void ssusb_dev_debugfs_init(struct ssusb_mtk *ssusb)
|
||
|
|
{
|
||
|
|
struct mtu3 *mtu = ssusb->u3d;
|
||
|
|
struct dentry *dir_regs;
|
||
|
|
|
||
|
|
dir_regs = debugfs_create_dir("regs", ssusb->dbgfs_root);
|
||
|
|
|
||
|
|
mtu3_debugfs_regset(mtu, mtu->ippc_base,
|
||
|
|
mtu3_ippc_regs, ARRAY_SIZE(mtu3_ippc_regs),
|
||
|
|
"reg-ippc", dir_regs);
|
||
|
|
|
||
|
|
mtu3_debugfs_regset(mtu, mtu->mac_base,
|
||
|
|
mtu3_dev_regs, ARRAY_SIZE(mtu3_dev_regs),
|
||
|
|
"reg-dev", dir_regs);
|
||
|
|
|
||
|
|
mtu3_debugfs_regset(mtu, mtu->mac_base,
|
||
|
|
mtu3_csr_regs, ARRAY_SIZE(mtu3_csr_regs),
|
||
|
|
"reg-csr", dir_regs);
|
||
|
|
|
||
|
|
mtu3_debugfs_create_ep_dirs(mtu);
|
||
|
|
|
||
|
|
mtu3_debugfs_create_prb_files(mtu);
|
||
|
|
|
||
|
|
debugfs_create_file("link-state", 0444, ssusb->dbgfs_root,
|
||
|
|
mtu, &mtu3_link_state_fops);
|
||
|
|
debugfs_create_file("ep-used", 0444, ssusb->dbgfs_root,
|
||
|
|
mtu, &mtu3_ep_used_fops);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int ssusb_mode_show(struct seq_file *sf, void *unused)
|
||
|
|
{
|
||
|
|
struct ssusb_mtk *ssusb = sf->private;
|
||
|
|
|
||
|
|
seq_printf(sf, "current mode: %s(%s drd)\n(echo device/host)\n",
|
||
|
|
ssusb->is_host ? "host" : "device",
|
||
|
|
ssusb->otg_switch.manual_drd_enabled ? "manual" : "auto");
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int ssusb_mode_open(struct inode *inode, struct file *file)
|
||
|
|
{
|
||
|
|
return single_open(file, ssusb_mode_show, inode->i_private);
|
||
|
|
}
|
||
|
|
|
||
|
|
static ssize_t ssusb_mode_write(struct file *file, const char __user *ubuf,
|
||
|
|
size_t count, loff_t *ppos)
|
||
|
|
{
|
||
|
|
struct seq_file *sf = file->private_data;
|
||
|
|
struct ssusb_mtk *ssusb = sf->private;
|
||
|
|
char buf[16];
|
||
|
|
|
||
|
|
if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
|
||
|
|
return -EFAULT;
|
||
|
|
|
||
|
|
if (!strncmp(buf, "host", 4) && !ssusb->is_host) {
|
||
|
|
ssusb_mode_switch(ssusb, 1);
|
||
|
|
} else if (!strncmp(buf, "device", 6) && ssusb->is_host) {
|
||
|
|
ssusb_mode_switch(ssusb, 0);
|
||
|
|
} else {
|
||
|
|
dev_err(ssusb->dev, "wrong or duplicated setting\n");
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
|
||
|
|
return count;
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct file_operations ssusb_mode_fops = {
|
||
|
|
.open = ssusb_mode_open,
|
||
|
|
.write = ssusb_mode_write,
|
||
|
|
.read = seq_read,
|
||
|
|
.llseek = seq_lseek,
|
||
|
|
.release = single_release,
|
||
|
|
};
|
||
|
|
|
||
|
|
static int ssusb_vbus_show(struct seq_file *sf, void *unused)
|
||
|
|
{
|
||
|
|
struct ssusb_mtk *ssusb = sf->private;
|
||
|
|
struct otg_switch_mtk *otg_sx = &ssusb->otg_switch;
|
||
|
|
|
||
|
|
seq_printf(sf, "vbus state: %s\n(echo on/off)\n",
|
||
|
|
regulator_is_enabled(otg_sx->vbus) ? "on" : "off");
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int ssusb_vbus_open(struct inode *inode, struct file *file)
|
||
|
|
{
|
||
|
|
return single_open(file, ssusb_vbus_show, inode->i_private);
|
||
|
|
}
|
||
|
|
|
||
|
|
static ssize_t ssusb_vbus_write(struct file *file, const char __user *ubuf,
|
||
|
|
size_t count, loff_t *ppos)
|
||
|
|
{
|
||
|
|
struct seq_file *sf = file->private_data;
|
||
|
|
struct ssusb_mtk *ssusb = sf->private;
|
||
|
|
struct otg_switch_mtk *otg_sx = &ssusb->otg_switch;
|
||
|
|
char buf[16];
|
||
|
|
bool enable;
|
||
|
|
|
||
|
|
if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
|
||
|
|
return -EFAULT;
|
||
|
|
|
||
|
|
if (kstrtobool(buf, &enable)) {
|
||
|
|
dev_err(ssusb->dev, "wrong setting\n");
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
|
||
|
|
ssusb_set_vbus(otg_sx, enable);
|
||
|
|
|
||
|
|
return count;
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct file_operations ssusb_vbus_fops = {
|
||
|
|
.open = ssusb_vbus_open,
|
||
|
|
.write = ssusb_vbus_write,
|
||
|
|
.read = seq_read,
|
||
|
|
.llseek = seq_lseek,
|
||
|
|
.release = single_release,
|
||
|
|
};
|
||
|
|
|
||
|
|
void ssusb_dr_debugfs_init(struct ssusb_mtk *ssusb)
|
||
|
|
{
|
||
|
|
struct dentry *root = ssusb->dbgfs_root;
|
||
|
|
|
||
|
|
debugfs_create_file("mode", 0644, root, ssusb, &ssusb_mode_fops);
|
||
|
|
debugfs_create_file("vbus", 0644, root, ssusb, &ssusb_vbus_fops);
|
||
|
|
}
|
||
|
|
|
||
|
|
void ssusb_debugfs_create_root(struct ssusb_mtk *ssusb)
|
||
|
|
{
|
||
|
|
ssusb->dbgfs_root =
|
||
|
|
debugfs_create_dir(dev_name(ssusb->dev), usb_debug_root);
|
||
|
|
}
|
||
|
|
|
||
|
|
void ssusb_debugfs_remove_root(struct ssusb_mtk *ssusb)
|
||
|
|
{
|
||
|
|
debugfs_remove_recursive(ssusb->dbgfs_root);
|
||
|
|
ssusb->dbgfs_root = NULL;
|
||
|
|
}
|