1085 lines
28 KiB
C
1085 lines
28 KiB
C
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/*
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* Copyright (c) 2001-2002 by David Brownell
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/* this file is part of ehci-hcd.c */
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#ifdef CONFIG_DYNAMIC_DEBUG
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/* check the values in the HCSPARAMS register
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* (host controller _Structural_ parameters)
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* see EHCI spec, Table 2-4 for each value
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*/
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static void dbg_hcs_params (struct ehci_hcd *ehci, char *label)
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{
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u32 params = ehci_readl(ehci, &ehci->caps->hcs_params);
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ehci_dbg (ehci,
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"%s hcs_params 0x%x dbg=%d%s cc=%d pcc=%d%s%s ports=%d\n",
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label, params,
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HCS_DEBUG_PORT (params),
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HCS_INDICATOR (params) ? " ind" : "",
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HCS_N_CC (params),
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HCS_N_PCC (params),
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HCS_PORTROUTED (params) ? "" : " ordered",
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HCS_PPC (params) ? "" : " !ppc",
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HCS_N_PORTS (params)
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);
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/* Port routing, per EHCI 0.95 Spec, Section 2.2.5 */
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if (HCS_PORTROUTED (params)) {
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int i;
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char buf [46], tmp [7], byte;
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buf[0] = 0;
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for (i = 0; i < HCS_N_PORTS (params); i++) {
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// FIXME MIPS won't readb() ...
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byte = readb (&ehci->caps->portroute[(i>>1)]);
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sprintf(tmp, "%d ",
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((i & 0x1) ? ((byte)&0xf) : ((byte>>4)&0xf)));
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strcat(buf, tmp);
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}
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ehci_dbg (ehci, "%s portroute %s\n",
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label, buf);
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}
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}
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#else
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static inline void dbg_hcs_params (struct ehci_hcd *ehci, char *label) {}
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#endif
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#ifdef CONFIG_DYNAMIC_DEBUG
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/* check the values in the HCCPARAMS register
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* (host controller _Capability_ parameters)
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* see EHCI Spec, Table 2-5 for each value
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* */
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static void dbg_hcc_params (struct ehci_hcd *ehci, char *label)
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{
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u32 params = ehci_readl(ehci, &ehci->caps->hcc_params);
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if (HCC_ISOC_CACHE (params)) {
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ehci_dbg (ehci,
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"%s hcc_params %04x caching frame %s%s%s\n",
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label, params,
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HCC_PGM_FRAMELISTLEN(params) ? "256/512/1024" : "1024",
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HCC_CANPARK(params) ? " park" : "",
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HCC_64BIT_ADDR(params) ? " 64 bit addr" : "");
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} else {
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ehci_dbg (ehci,
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"%s hcc_params %04x thresh %d uframes %s%s%s%s%s%s%s\n",
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label,
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params,
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HCC_ISOC_THRES(params),
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HCC_PGM_FRAMELISTLEN(params) ? "256/512/1024" : "1024",
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HCC_CANPARK(params) ? " park" : "",
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HCC_64BIT_ADDR(params) ? " 64 bit addr" : "",
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HCC_LPM(params) ? " LPM" : "",
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HCC_PER_PORT_CHANGE_EVENT(params) ? " ppce" : "",
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HCC_HW_PREFETCH(params) ? " hw prefetch" : "",
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HCC_32FRAME_PERIODIC_LIST(params) ?
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" 32 periodic list" : "");
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}
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}
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#else
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static inline void dbg_hcc_params (struct ehci_hcd *ehci, char *label) {}
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#endif
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#ifdef CONFIG_DYNAMIC_DEBUG
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static void __maybe_unused
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dbg_qtd (const char *label, struct ehci_hcd *ehci, struct ehci_qtd *qtd)
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{
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ehci_dbg(ehci, "%s td %p n%08x %08x t%08x p0=%08x\n", label, qtd,
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hc32_to_cpup(ehci, &qtd->hw_next),
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hc32_to_cpup(ehci, &qtd->hw_alt_next),
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hc32_to_cpup(ehci, &qtd->hw_token),
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hc32_to_cpup(ehci, &qtd->hw_buf [0]));
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if (qtd->hw_buf [1])
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ehci_dbg(ehci, " p1=%08x p2=%08x p3=%08x p4=%08x\n",
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hc32_to_cpup(ehci, &qtd->hw_buf[1]),
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hc32_to_cpup(ehci, &qtd->hw_buf[2]),
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hc32_to_cpup(ehci, &qtd->hw_buf[3]),
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hc32_to_cpup(ehci, &qtd->hw_buf[4]));
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}
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static void __maybe_unused
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dbg_qh (const char *label, struct ehci_hcd *ehci, struct ehci_qh *qh)
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{
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struct ehci_qh_hw *hw = qh->hw;
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ehci_dbg (ehci, "%s qh %p n%08x info %x %x qtd %x\n", label,
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qh, hw->hw_next, hw->hw_info1, hw->hw_info2, hw->hw_current);
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dbg_qtd("overlay", ehci, (struct ehci_qtd *) &hw->hw_qtd_next);
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}
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static void __maybe_unused
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dbg_itd (const char *label, struct ehci_hcd *ehci, struct ehci_itd *itd)
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{
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ehci_dbg (ehci, "%s [%d] itd %p, next %08x, urb %p\n",
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label, itd->frame, itd, hc32_to_cpu(ehci, itd->hw_next),
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itd->urb);
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ehci_dbg (ehci,
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" trans: %08x %08x %08x %08x %08x %08x %08x %08x\n",
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hc32_to_cpu(ehci, itd->hw_transaction[0]),
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hc32_to_cpu(ehci, itd->hw_transaction[1]),
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hc32_to_cpu(ehci, itd->hw_transaction[2]),
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hc32_to_cpu(ehci, itd->hw_transaction[3]),
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hc32_to_cpu(ehci, itd->hw_transaction[4]),
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hc32_to_cpu(ehci, itd->hw_transaction[5]),
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hc32_to_cpu(ehci, itd->hw_transaction[6]),
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hc32_to_cpu(ehci, itd->hw_transaction[7]));
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ehci_dbg (ehci,
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" buf: %08x %08x %08x %08x %08x %08x %08x\n",
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hc32_to_cpu(ehci, itd->hw_bufp[0]),
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hc32_to_cpu(ehci, itd->hw_bufp[1]),
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hc32_to_cpu(ehci, itd->hw_bufp[2]),
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hc32_to_cpu(ehci, itd->hw_bufp[3]),
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hc32_to_cpu(ehci, itd->hw_bufp[4]),
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hc32_to_cpu(ehci, itd->hw_bufp[5]),
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hc32_to_cpu(ehci, itd->hw_bufp[6]));
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ehci_dbg (ehci, " index: %d %d %d %d %d %d %d %d\n",
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itd->index[0], itd->index[1], itd->index[2],
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itd->index[3], itd->index[4], itd->index[5],
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itd->index[6], itd->index[7]);
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}
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static void __maybe_unused
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dbg_sitd (const char *label, struct ehci_hcd *ehci, struct ehci_sitd *sitd)
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{
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ehci_dbg (ehci, "%s [%d] sitd %p, next %08x, urb %p\n",
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label, sitd->frame, sitd, hc32_to_cpu(ehci, sitd->hw_next),
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sitd->urb);
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ehci_dbg (ehci,
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" addr %08x sched %04x result %08x buf %08x %08x\n",
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hc32_to_cpu(ehci, sitd->hw_fullspeed_ep),
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hc32_to_cpu(ehci, sitd->hw_uframe),
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hc32_to_cpu(ehci, sitd->hw_results),
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hc32_to_cpu(ehci, sitd->hw_buf[0]),
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hc32_to_cpu(ehci, sitd->hw_buf[1]));
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}
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static int __maybe_unused
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dbg_status_buf (char *buf, unsigned len, const char *label, u32 status)
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{
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return scnprintf (buf, len,
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"%s%sstatus %04x%s%s%s%s%s%s%s%s%s%s%s",
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label, label [0] ? " " : "", status,
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(status & STS_PPCE_MASK) ? " PPCE" : "",
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(status & STS_ASS) ? " Async" : "",
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(status & STS_PSS) ? " Periodic" : "",
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(status & STS_RECL) ? " Recl" : "",
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(status & STS_HALT) ? " Halt" : "",
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(status & STS_IAA) ? " IAA" : "",
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(status & STS_FATAL) ? " FATAL" : "",
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(status & STS_FLR) ? " FLR" : "",
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(status & STS_PCD) ? " PCD" : "",
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(status & STS_ERR) ? " ERR" : "",
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(status & STS_INT) ? " INT" : ""
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);
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}
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static int __maybe_unused
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dbg_intr_buf (char *buf, unsigned len, const char *label, u32 enable)
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{
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return scnprintf (buf, len,
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"%s%sintrenable %02x%s%s%s%s%s%s%s",
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label, label [0] ? " " : "", enable,
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(enable & STS_PPCE_MASK) ? " PPCE" : "",
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(enable & STS_IAA) ? " IAA" : "",
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(enable & STS_FATAL) ? " FATAL" : "",
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(enable & STS_FLR) ? " FLR" : "",
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(enable & STS_PCD) ? " PCD" : "",
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(enable & STS_ERR) ? " ERR" : "",
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(enable & STS_INT) ? " INT" : ""
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);
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}
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static const char *const fls_strings [] =
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{ "1024", "512", "256", "??" };
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static int
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dbg_command_buf (char *buf, unsigned len, const char *label, u32 command)
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{
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return scnprintf (buf, len,
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"%s%scommand %07x %s%s%s%s%s%s=%d ithresh=%d%s%s%s%s "
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"period=%s%s %s",
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label, label [0] ? " " : "", command,
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(command & CMD_HIRD) ? " HIRD" : "",
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(command & CMD_PPCEE) ? " PPCEE" : "",
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(command & CMD_FSP) ? " FSP" : "",
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(command & CMD_ASPE) ? " ASPE" : "",
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(command & CMD_PSPE) ? " PSPE" : "",
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(command & CMD_PARK) ? " park" : "(park)",
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CMD_PARK_CNT (command),
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(command >> 16) & 0x3f,
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(command & CMD_LRESET) ? " LReset" : "",
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(command & CMD_IAAD) ? " IAAD" : "",
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(command & CMD_ASE) ? " Async" : "",
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(command & CMD_PSE) ? " Periodic" : "",
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fls_strings [(command >> 2) & 0x3],
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(command & CMD_RESET) ? " Reset" : "",
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(command & CMD_RUN) ? "RUN" : "HALT"
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);
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}
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static int
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dbg_port_buf (char *buf, unsigned len, const char *label, int port, u32 status)
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{
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char *sig;
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/* signaling state */
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switch (status & (3 << 10)) {
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case 0 << 10: sig = "se0"; break;
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case 1 << 10: sig = "k"; break; /* low speed */
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case 2 << 10: sig = "j"; break;
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default: sig = "?"; break;
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}
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return scnprintf (buf, len,
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"%s%sport:%d status %06x %d %s%s%s%s%s%s "
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"sig=%s%s%s%s%s%s%s%s%s%s%s",
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label, label [0] ? " " : "", port, status,
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status>>25,/*device address */
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(status & PORT_SSTS)>>23 == PORTSC_SUSPEND_STS_ACK ?
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" ACK" : "",
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(status & PORT_SSTS)>>23 == PORTSC_SUSPEND_STS_NYET ?
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" NYET" : "",
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(status & PORT_SSTS)>>23 == PORTSC_SUSPEND_STS_STALL ?
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" STALL" : "",
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(status & PORT_SSTS)>>23 == PORTSC_SUSPEND_STS_ERR ?
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" ERR" : "",
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(status & PORT_POWER) ? " POWER" : "",
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(status & PORT_OWNER) ? " OWNER" : "",
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sig,
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(status & PORT_LPM) ? " LPM" : "",
|
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(status & PORT_RESET) ? " RESET" : "",
|
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(status & PORT_SUSPEND) ? " SUSPEND" : "",
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(status & PORT_RESUME) ? " RESUME" : "",
|
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(status & PORT_OCC) ? " OCC" : "",
|
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(status & PORT_OC) ? " OC" : "",
|
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(status & PORT_PEC) ? " PEC" : "",
|
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(status & PORT_PE) ? " PE" : "",
|
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(status & PORT_CSC) ? " CSC" : "",
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(status & PORT_CONNECT) ? " CONNECT" : "");
|
||
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}
|
||
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|
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#else
|
||
|
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static inline void __maybe_unused
|
||
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dbg_qh (char *label, struct ehci_hcd *ehci, struct ehci_qh *qh)
|
||
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{}
|
||
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|
||
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static inline int __maybe_unused
|
||
|
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dbg_status_buf (char *buf, unsigned len, const char *label, u32 status)
|
||
|
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{ return 0; }
|
||
|
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|
||
|
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static inline int __maybe_unused
|
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dbg_command_buf (char *buf, unsigned len, const char *label, u32 command)
|
||
|
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{ return 0; }
|
||
|
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|
||
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static inline int __maybe_unused
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||
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dbg_intr_buf (char *buf, unsigned len, const char *label, u32 enable)
|
||
|
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{ return 0; }
|
||
|
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|
||
|
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static inline int __maybe_unused
|
||
|
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dbg_port_buf (char *buf, unsigned len, const char *label, int port, u32 status)
|
||
|
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{ return 0; }
|
||
|
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|
||
|
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#endif /* CONFIG_DYNAMIC_DEBUG */
|
||
|
|
|
||
|
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/* functions have the "wrong" filename when they're output... */
|
||
|
|
#define dbg_status(ehci, label, status) { \
|
||
|
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char _buf [80]; \
|
||
|
|
dbg_status_buf (_buf, sizeof _buf, label, status); \
|
||
|
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ehci_dbg (ehci, "%s\n", _buf); \
|
||
|
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}
|
||
|
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|
||
|
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#define dbg_cmd(ehci, label, command) { \
|
||
|
|
char _buf [80]; \
|
||
|
|
dbg_command_buf (_buf, sizeof _buf, label, command); \
|
||
|
|
ehci_dbg (ehci, "%s\n", _buf); \
|
||
|
|
}
|
||
|
|
|
||
|
|
#define dbg_port(ehci, label, port, status) { \
|
||
|
|
char _buf [80]; \
|
||
|
|
dbg_port_buf (_buf, sizeof _buf, label, port, status); \
|
||
|
|
ehci_dbg (ehci, "%s\n", _buf); \
|
||
|
|
}
|
||
|
|
|
||
|
|
/*-------------------------------------------------------------------------*/
|
||
|
|
|
||
|
|
#ifdef STUB_DEBUG_FILES
|
||
|
|
|
||
|
|
static inline void create_debug_files (struct ehci_hcd *bus) { }
|
||
|
|
static inline void remove_debug_files (struct ehci_hcd *bus) { }
|
||
|
|
|
||
|
|
#else
|
||
|
|
|
||
|
|
/* troubleshooting help: expose state in debugfs */
|
||
|
|
|
||
|
|
static int debug_async_open(struct inode *, struct file *);
|
||
|
|
static int debug_bandwidth_open(struct inode *, struct file *);
|
||
|
|
static int debug_periodic_open(struct inode *, struct file *);
|
||
|
|
static int debug_registers_open(struct inode *, struct file *);
|
||
|
|
|
||
|
|
static ssize_t debug_output(struct file*, char __user*, size_t, loff_t*);
|
||
|
|
static int debug_close(struct inode *, struct file *);
|
||
|
|
|
||
|
|
static const struct file_operations debug_async_fops = {
|
||
|
|
.owner = THIS_MODULE,
|
||
|
|
.open = debug_async_open,
|
||
|
|
.read = debug_output,
|
||
|
|
.release = debug_close,
|
||
|
|
.llseek = default_llseek,
|
||
|
|
};
|
||
|
|
static const struct file_operations debug_bandwidth_fops = {
|
||
|
|
.owner = THIS_MODULE,
|
||
|
|
.open = debug_bandwidth_open,
|
||
|
|
.read = debug_output,
|
||
|
|
.release = debug_close,
|
||
|
|
.llseek = default_llseek,
|
||
|
|
};
|
||
|
|
static const struct file_operations debug_periodic_fops = {
|
||
|
|
.owner = THIS_MODULE,
|
||
|
|
.open = debug_periodic_open,
|
||
|
|
.read = debug_output,
|
||
|
|
.release = debug_close,
|
||
|
|
.llseek = default_llseek,
|
||
|
|
};
|
||
|
|
static const struct file_operations debug_registers_fops = {
|
||
|
|
.owner = THIS_MODULE,
|
||
|
|
.open = debug_registers_open,
|
||
|
|
.read = debug_output,
|
||
|
|
.release = debug_close,
|
||
|
|
.llseek = default_llseek,
|
||
|
|
};
|
||
|
|
|
||
|
|
static struct dentry *ehci_debug_root;
|
||
|
|
|
||
|
|
struct debug_buffer {
|
||
|
|
ssize_t (*fill_func)(struct debug_buffer *); /* fill method */
|
||
|
|
struct usb_bus *bus;
|
||
|
|
struct mutex mutex; /* protect filling of buffer */
|
||
|
|
size_t count; /* number of characters filled into buffer */
|
||
|
|
char *output_buf;
|
||
|
|
size_t alloc_size;
|
||
|
|
};
|
||
|
|
|
||
|
|
#define speed_char(info1) ({ char tmp; \
|
||
|
|
switch (info1 & (3 << 12)) { \
|
||
|
|
case QH_FULL_SPEED: tmp = 'f'; break; \
|
||
|
|
case QH_LOW_SPEED: tmp = 'l'; break; \
|
||
|
|
case QH_HIGH_SPEED: tmp = 'h'; break; \
|
||
|
|
default: tmp = '?'; break; \
|
||
|
|
} tmp; })
|
||
|
|
|
||
|
|
static inline char token_mark(struct ehci_hcd *ehci, __hc32 token)
|
||
|
|
{
|
||
|
|
__u32 v = hc32_to_cpu(ehci, token);
|
||
|
|
|
||
|
|
if (v & QTD_STS_ACTIVE)
|
||
|
|
return '*';
|
||
|
|
if (v & QTD_STS_HALT)
|
||
|
|
return '-';
|
||
|
|
if (!IS_SHORT_READ (v))
|
||
|
|
return ' ';
|
||
|
|
/* tries to advance through hw_alt_next */
|
||
|
|
return '/';
|
||
|
|
}
|
||
|
|
|
||
|
|
static void qh_lines (
|
||
|
|
struct ehci_hcd *ehci,
|
||
|
|
struct ehci_qh *qh,
|
||
|
|
char **nextp,
|
||
|
|
unsigned *sizep
|
||
|
|
)
|
||
|
|
{
|
||
|
|
u32 scratch;
|
||
|
|
u32 hw_curr;
|
||
|
|
struct list_head *entry;
|
||
|
|
struct ehci_qtd *td;
|
||
|
|
unsigned temp;
|
||
|
|
unsigned size = *sizep;
|
||
|
|
char *next = *nextp;
|
||
|
|
char mark;
|
||
|
|
__le32 list_end = EHCI_LIST_END(ehci);
|
||
|
|
struct ehci_qh_hw *hw = qh->hw;
|
||
|
|
|
||
|
|
if (hw->hw_qtd_next == list_end) /* NEC does this */
|
||
|
|
mark = '@';
|
||
|
|
else
|
||
|
|
mark = token_mark(ehci, hw->hw_token);
|
||
|
|
if (mark == '/') { /* qh_alt_next controls qh advance? */
|
||
|
|
if ((hw->hw_alt_next & QTD_MASK(ehci))
|
||
|
|
== ehci->async->hw->hw_alt_next)
|
||
|
|
mark = '#'; /* blocked */
|
||
|
|
else if (hw->hw_alt_next == list_end)
|
||
|
|
mark = '.'; /* use hw_qtd_next */
|
||
|
|
/* else alt_next points to some other qtd */
|
||
|
|
}
|
||
|
|
scratch = hc32_to_cpup(ehci, &hw->hw_info1);
|
||
|
|
hw_curr = (mark == '*') ? hc32_to_cpup(ehci, &hw->hw_current) : 0;
|
||
|
|
temp = scnprintf (next, size,
|
||
|
|
"qh/%p dev%d %cs ep%d %08x %08x (%08x%c %s nak%d)",
|
||
|
|
qh, scratch & 0x007f,
|
||
|
|
speed_char (scratch),
|
||
|
|
(scratch >> 8) & 0x000f,
|
||
|
|
scratch, hc32_to_cpup(ehci, &hw->hw_info2),
|
||
|
|
hc32_to_cpup(ehci, &hw->hw_token), mark,
|
||
|
|
(cpu_to_hc32(ehci, QTD_TOGGLE) & hw->hw_token)
|
||
|
|
? "data1" : "data0",
|
||
|
|
(hc32_to_cpup(ehci, &hw->hw_alt_next) >> 1) & 0x0f);
|
||
|
|
size -= temp;
|
||
|
|
next += temp;
|
||
|
|
|
||
|
|
/* hc may be modifying the list as we read it ... */
|
||
|
|
list_for_each (entry, &qh->qtd_list) {
|
||
|
|
td = list_entry (entry, struct ehci_qtd, qtd_list);
|
||
|
|
scratch = hc32_to_cpup(ehci, &td->hw_token);
|
||
|
|
mark = ' ';
|
||
|
|
if (hw_curr == td->qtd_dma)
|
||
|
|
mark = '*';
|
||
|
|
else if (hw->hw_qtd_next == cpu_to_hc32(ehci, td->qtd_dma))
|
||
|
|
mark = '+';
|
||
|
|
else if (QTD_LENGTH (scratch)) {
|
||
|
|
if (td->hw_alt_next == ehci->async->hw->hw_alt_next)
|
||
|
|
mark = '#';
|
||
|
|
else if (td->hw_alt_next != list_end)
|
||
|
|
mark = '/';
|
||
|
|
}
|
||
|
|
temp = snprintf (next, size,
|
||
|
|
"\n\t%p%c%s len=%d %08x urb %p",
|
||
|
|
td, mark, ({ char *tmp;
|
||
|
|
switch ((scratch>>8)&0x03) {
|
||
|
|
case 0: tmp = "out"; break;
|
||
|
|
case 1: tmp = "in"; break;
|
||
|
|
case 2: tmp = "setup"; break;
|
||
|
|
default: tmp = "?"; break;
|
||
|
|
} tmp;}),
|
||
|
|
(scratch >> 16) & 0x7fff,
|
||
|
|
scratch,
|
||
|
|
td->urb);
|
||
|
|
if (size < temp)
|
||
|
|
temp = size;
|
||
|
|
size -= temp;
|
||
|
|
next += temp;
|
||
|
|
if (temp == size)
|
||
|
|
goto done;
|
||
|
|
}
|
||
|
|
|
||
|
|
temp = snprintf (next, size, "\n");
|
||
|
|
if (size < temp)
|
||
|
|
temp = size;
|
||
|
|
size -= temp;
|
||
|
|
next += temp;
|
||
|
|
|
||
|
|
done:
|
||
|
|
*sizep = size;
|
||
|
|
*nextp = next;
|
||
|
|
}
|
||
|
|
|
||
|
|
static ssize_t fill_async_buffer(struct debug_buffer *buf)
|
||
|
|
{
|
||
|
|
struct usb_hcd *hcd;
|
||
|
|
struct ehci_hcd *ehci;
|
||
|
|
unsigned long flags;
|
||
|
|
unsigned temp, size;
|
||
|
|
char *next;
|
||
|
|
struct ehci_qh *qh;
|
||
|
|
|
||
|
|
hcd = bus_to_hcd(buf->bus);
|
||
|
|
ehci = hcd_to_ehci (hcd);
|
||
|
|
next = buf->output_buf;
|
||
|
|
size = buf->alloc_size;
|
||
|
|
|
||
|
|
*next = 0;
|
||
|
|
|
||
|
|
/* dumps a snapshot of the async schedule.
|
||
|
|
* usually empty except for long-term bulk reads, or head.
|
||
|
|
* one QH per line, and TDs we know about
|
||
|
|
*/
|
||
|
|
spin_lock_irqsave (&ehci->lock, flags);
|
||
|
|
for (qh = ehci->async->qh_next.qh; size > 0 && qh; qh = qh->qh_next.qh)
|
||
|
|
qh_lines (ehci, qh, &next, &size);
|
||
|
|
if (!list_empty(&ehci->async_unlink) && size > 0) {
|
||
|
|
temp = scnprintf(next, size, "\nunlink =\n");
|
||
|
|
size -= temp;
|
||
|
|
next += temp;
|
||
|
|
|
||
|
|
list_for_each_entry(qh, &ehci->async_unlink, unlink_node) {
|
||
|
|
if (size <= 0)
|
||
|
|
break;
|
||
|
|
qh_lines(ehci, qh, &next, &size);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
spin_unlock_irqrestore (&ehci->lock, flags);
|
||
|
|
|
||
|
|
return strlen(buf->output_buf);
|
||
|
|
}
|
||
|
|
|
||
|
|
static ssize_t fill_bandwidth_buffer(struct debug_buffer *buf)
|
||
|
|
{
|
||
|
|
struct ehci_hcd *ehci;
|
||
|
|
struct ehci_tt *tt;
|
||
|
|
struct ehci_per_sched *ps;
|
||
|
|
unsigned temp, size;
|
||
|
|
char *next;
|
||
|
|
unsigned i;
|
||
|
|
u8 *bw;
|
||
|
|
u16 *bf;
|
||
|
|
u8 budget[EHCI_BANDWIDTH_SIZE];
|
||
|
|
|
||
|
|
ehci = hcd_to_ehci(bus_to_hcd(buf->bus));
|
||
|
|
next = buf->output_buf;
|
||
|
|
size = buf->alloc_size;
|
||
|
|
|
||
|
|
*next = 0;
|
||
|
|
|
||
|
|
spin_lock_irq(&ehci->lock);
|
||
|
|
|
||
|
|
/* Dump the HS bandwidth table */
|
||
|
|
temp = scnprintf(next, size,
|
||
|
|
"HS bandwidth allocation (us per microframe)\n");
|
||
|
|
size -= temp;
|
||
|
|
next += temp;
|
||
|
|
for (i = 0; i < EHCI_BANDWIDTH_SIZE; i += 8) {
|
||
|
|
bw = &ehci->bandwidth[i];
|
||
|
|
temp = scnprintf(next, size,
|
||
|
|
"%2u: %4u%4u%4u%4u%4u%4u%4u%4u\n",
|
||
|
|
i, bw[0], bw[1], bw[2], bw[3],
|
||
|
|
bw[4], bw[5], bw[6], bw[7]);
|
||
|
|
size -= temp;
|
||
|
|
next += temp;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Dump all the FS/LS tables */
|
||
|
|
list_for_each_entry(tt, &ehci->tt_list, tt_list) {
|
||
|
|
temp = scnprintf(next, size,
|
||
|
|
"\nTT %s port %d FS/LS bandwidth allocation (us per frame)\n",
|
||
|
|
dev_name(&tt->usb_tt->hub->dev),
|
||
|
|
tt->tt_port + !!tt->usb_tt->multi);
|
||
|
|
size -= temp;
|
||
|
|
next += temp;
|
||
|
|
|
||
|
|
bf = tt->bandwidth;
|
||
|
|
temp = scnprintf(next, size,
|
||
|
|
" %5u%5u%5u%5u%5u%5u%5u%5u\n",
|
||
|
|
bf[0], bf[1], bf[2], bf[3],
|
||
|
|
bf[4], bf[5], bf[6], bf[7]);
|
||
|
|
size -= temp;
|
||
|
|
next += temp;
|
||
|
|
|
||
|
|
temp = scnprintf(next, size,
|
||
|
|
"FS/LS budget (us per microframe)\n");
|
||
|
|
size -= temp;
|
||
|
|
next += temp;
|
||
|
|
compute_tt_budget(budget, tt);
|
||
|
|
for (i = 0; i < EHCI_BANDWIDTH_SIZE; i += 8) {
|
||
|
|
bw = &budget[i];
|
||
|
|
temp = scnprintf(next, size,
|
||
|
|
"%2u: %4u%4u%4u%4u%4u%4u%4u%4u\n",
|
||
|
|
i, bw[0], bw[1], bw[2], bw[3],
|
||
|
|
bw[4], bw[5], bw[6], bw[7]);
|
||
|
|
size -= temp;
|
||
|
|
next += temp;
|
||
|
|
}
|
||
|
|
list_for_each_entry(ps, &tt->ps_list, ps_list) {
|
||
|
|
temp = scnprintf(next, size,
|
||
|
|
"%s ep %02x: %4u @ %2u.%u+%u mask %04x\n",
|
||
|
|
dev_name(&ps->udev->dev),
|
||
|
|
ps->ep->desc.bEndpointAddress,
|
||
|
|
ps->tt_usecs,
|
||
|
|
ps->bw_phase, ps->phase_uf,
|
||
|
|
ps->bw_period, ps->cs_mask);
|
||
|
|
size -= temp;
|
||
|
|
next += temp;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
spin_unlock_irq(&ehci->lock);
|
||
|
|
|
||
|
|
return next - buf->output_buf;
|
||
|
|
}
|
||
|
|
|
||
|
|
#define DBG_SCHED_LIMIT 64
|
||
|
|
static ssize_t fill_periodic_buffer(struct debug_buffer *buf)
|
||
|
|
{
|
||
|
|
struct usb_hcd *hcd;
|
||
|
|
struct ehci_hcd *ehci;
|
||
|
|
unsigned long flags;
|
||
|
|
union ehci_shadow p, *seen;
|
||
|
|
unsigned temp, size, seen_count;
|
||
|
|
char *next;
|
||
|
|
unsigned i;
|
||
|
|
__hc32 tag;
|
||
|
|
|
||
|
|
if (!(seen = kmalloc (DBG_SCHED_LIMIT * sizeof *seen, GFP_ATOMIC)))
|
||
|
|
return 0;
|
||
|
|
seen_count = 0;
|
||
|
|
|
||
|
|
hcd = bus_to_hcd(buf->bus);
|
||
|
|
ehci = hcd_to_ehci (hcd);
|
||
|
|
next = buf->output_buf;
|
||
|
|
size = buf->alloc_size;
|
||
|
|
|
||
|
|
temp = scnprintf (next, size, "size = %d\n", ehci->periodic_size);
|
||
|
|
size -= temp;
|
||
|
|
next += temp;
|
||
|
|
|
||
|
|
/* dump a snapshot of the periodic schedule.
|
||
|
|
* iso changes, interrupt usually doesn't.
|
||
|
|
*/
|
||
|
|
spin_lock_irqsave (&ehci->lock, flags);
|
||
|
|
for (i = 0; i < ehci->periodic_size; i++) {
|
||
|
|
p = ehci->pshadow [i];
|
||
|
|
if (likely (!p.ptr))
|
||
|
|
continue;
|
||
|
|
tag = Q_NEXT_TYPE(ehci, ehci->periodic [i]);
|
||
|
|
|
||
|
|
temp = scnprintf (next, size, "%4d: ", i);
|
||
|
|
size -= temp;
|
||
|
|
next += temp;
|
||
|
|
|
||
|
|
do {
|
||
|
|
struct ehci_qh_hw *hw;
|
||
|
|
|
||
|
|
switch (hc32_to_cpu(ehci, tag)) {
|
||
|
|
case Q_TYPE_QH:
|
||
|
|
hw = p.qh->hw;
|
||
|
|
temp = scnprintf (next, size, " qh%d-%04x/%p",
|
||
|
|
p.qh->ps.period,
|
||
|
|
hc32_to_cpup(ehci,
|
||
|
|
&hw->hw_info2)
|
||
|
|
/* uframe masks */
|
||
|
|
& (QH_CMASK | QH_SMASK),
|
||
|
|
p.qh);
|
||
|
|
size -= temp;
|
||
|
|
next += temp;
|
||
|
|
/* don't repeat what follows this qh */
|
||
|
|
for (temp = 0; temp < seen_count; temp++) {
|
||
|
|
if (seen [temp].ptr != p.ptr)
|
||
|
|
continue;
|
||
|
|
if (p.qh->qh_next.ptr) {
|
||
|
|
temp = scnprintf (next, size,
|
||
|
|
" ...");
|
||
|
|
size -= temp;
|
||
|
|
next += temp;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
/* show more info the first time around */
|
||
|
|
if (temp == seen_count) {
|
||
|
|
u32 scratch = hc32_to_cpup(ehci,
|
||
|
|
&hw->hw_info1);
|
||
|
|
struct ehci_qtd *qtd;
|
||
|
|
char *type = "";
|
||
|
|
|
||
|
|
/* count tds, get ep direction */
|
||
|
|
temp = 0;
|
||
|
|
list_for_each_entry (qtd,
|
||
|
|
&p.qh->qtd_list,
|
||
|
|
qtd_list) {
|
||
|
|
temp++;
|
||
|
|
switch (0x03 & (hc32_to_cpu(
|
||
|
|
ehci,
|
||
|
|
qtd->hw_token) >> 8)) {
|
||
|
|
case 0: type = "out"; continue;
|
||
|
|
case 1: type = "in"; continue;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
temp = scnprintf (next, size,
|
||
|
|
" (%c%d ep%d%s "
|
||
|
|
"[%d/%d] q%d p%d)",
|
||
|
|
speed_char (scratch),
|
||
|
|
scratch & 0x007f,
|
||
|
|
(scratch >> 8) & 0x000f, type,
|
||
|
|
p.qh->ps.usecs,
|
||
|
|
p.qh->ps.c_usecs,
|
||
|
|
temp,
|
||
|
|
0x7ff & (scratch >> 16));
|
||
|
|
|
||
|
|
if (seen_count < DBG_SCHED_LIMIT)
|
||
|
|
seen [seen_count++].qh = p.qh;
|
||
|
|
} else
|
||
|
|
temp = 0;
|
||
|
|
tag = Q_NEXT_TYPE(ehci, hw->hw_next);
|
||
|
|
p = p.qh->qh_next;
|
||
|
|
break;
|
||
|
|
case Q_TYPE_FSTN:
|
||
|
|
temp = scnprintf (next, size,
|
||
|
|
" fstn-%8x/%p", p.fstn->hw_prev,
|
||
|
|
p.fstn);
|
||
|
|
tag = Q_NEXT_TYPE(ehci, p.fstn->hw_next);
|
||
|
|
p = p.fstn->fstn_next;
|
||
|
|
break;
|
||
|
|
case Q_TYPE_ITD:
|
||
|
|
temp = scnprintf (next, size,
|
||
|
|
" itd/%p", p.itd);
|
||
|
|
tag = Q_NEXT_TYPE(ehci, p.itd->hw_next);
|
||
|
|
p = p.itd->itd_next;
|
||
|
|
break;
|
||
|
|
case Q_TYPE_SITD:
|
||
|
|
temp = scnprintf (next, size,
|
||
|
|
" sitd%d-%04x/%p",
|
||
|
|
p.sitd->stream->ps.period,
|
||
|
|
hc32_to_cpup(ehci, &p.sitd->hw_uframe)
|
||
|
|
& 0x0000ffff,
|
||
|
|
p.sitd);
|
||
|
|
tag = Q_NEXT_TYPE(ehci, p.sitd->hw_next);
|
||
|
|
p = p.sitd->sitd_next;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
size -= temp;
|
||
|
|
next += temp;
|
||
|
|
} while (p.ptr);
|
||
|
|
|
||
|
|
temp = scnprintf (next, size, "\n");
|
||
|
|
size -= temp;
|
||
|
|
next += temp;
|
||
|
|
}
|
||
|
|
spin_unlock_irqrestore (&ehci->lock, flags);
|
||
|
|
kfree (seen);
|
||
|
|
|
||
|
|
return buf->alloc_size - size;
|
||
|
|
}
|
||
|
|
#undef DBG_SCHED_LIMIT
|
||
|
|
|
||
|
|
static const char *rh_state_string(struct ehci_hcd *ehci)
|
||
|
|
{
|
||
|
|
switch (ehci->rh_state) {
|
||
|
|
case EHCI_RH_HALTED:
|
||
|
|
return "halted";
|
||
|
|
case EHCI_RH_SUSPENDED:
|
||
|
|
return "suspended";
|
||
|
|
case EHCI_RH_RUNNING:
|
||
|
|
return "running";
|
||
|
|
case EHCI_RH_STOPPING:
|
||
|
|
return "stopping";
|
||
|
|
}
|
||
|
|
return "?";
|
||
|
|
}
|
||
|
|
|
||
|
|
static ssize_t fill_registers_buffer(struct debug_buffer *buf)
|
||
|
|
{
|
||
|
|
struct usb_hcd *hcd;
|
||
|
|
struct ehci_hcd *ehci;
|
||
|
|
unsigned long flags;
|
||
|
|
unsigned temp, size, i;
|
||
|
|
char *next, scratch [80];
|
||
|
|
static char fmt [] = "%*s\n";
|
||
|
|
static char label [] = "";
|
||
|
|
|
||
|
|
hcd = bus_to_hcd(buf->bus);
|
||
|
|
ehci = hcd_to_ehci (hcd);
|
||
|
|
next = buf->output_buf;
|
||
|
|
size = buf->alloc_size;
|
||
|
|
|
||
|
|
spin_lock_irqsave (&ehci->lock, flags);
|
||
|
|
|
||
|
|
if (!HCD_HW_ACCESSIBLE(hcd)) {
|
||
|
|
size = scnprintf (next, size,
|
||
|
|
"bus %s, device %s\n"
|
||
|
|
"%s\n"
|
||
|
|
"SUSPENDED (no register access)\n",
|
||
|
|
hcd->self.controller->bus->name,
|
||
|
|
dev_name(hcd->self.controller),
|
||
|
|
hcd->product_desc);
|
||
|
|
goto done;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Capability Registers */
|
||
|
|
i = HC_VERSION(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
|
||
|
|
temp = scnprintf (next, size,
|
||
|
|
"bus %s, device %s\n"
|
||
|
|
"%s\n"
|
||
|
|
"EHCI %x.%02x, rh state %s\n",
|
||
|
|
hcd->self.controller->bus->name,
|
||
|
|
dev_name(hcd->self.controller),
|
||
|
|
hcd->product_desc,
|
||
|
|
i >> 8, i & 0x0ff, rh_state_string(ehci));
|
||
|
|
size -= temp;
|
||
|
|
next += temp;
|
||
|
|
|
||
|
|
#ifdef CONFIG_PCI
|
||
|
|
/* EHCI 0.96 and later may have "extended capabilities" */
|
||
|
|
if (dev_is_pci(hcd->self.controller)) {
|
||
|
|
struct pci_dev *pdev;
|
||
|
|
u32 offset, cap, cap2;
|
||
|
|
unsigned count = 256/4;
|
||
|
|
|
||
|
|
pdev = to_pci_dev(ehci_to_hcd(ehci)->self.controller);
|
||
|
|
offset = HCC_EXT_CAPS(ehci_readl(ehci,
|
||
|
|
&ehci->caps->hcc_params));
|
||
|
|
while (offset && count--) {
|
||
|
|
pci_read_config_dword (pdev, offset, &cap);
|
||
|
|
switch (cap & 0xff) {
|
||
|
|
case 1:
|
||
|
|
temp = scnprintf (next, size,
|
||
|
|
"ownership %08x%s%s\n", cap,
|
||
|
|
(cap & (1 << 24)) ? " linux" : "",
|
||
|
|
(cap & (1 << 16)) ? " firmware" : "");
|
||
|
|
size -= temp;
|
||
|
|
next += temp;
|
||
|
|
|
||
|
|
offset += 4;
|
||
|
|
pci_read_config_dword (pdev, offset, &cap2);
|
||
|
|
temp = scnprintf (next, size,
|
||
|
|
"SMI sts/enable 0x%08x\n", cap2);
|
||
|
|
size -= temp;
|
||
|
|
next += temp;
|
||
|
|
break;
|
||
|
|
case 0: /* illegal reserved capability */
|
||
|
|
cap = 0;
|
||
|
|
/* FALLTHROUGH */
|
||
|
|
default: /* unknown */
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
temp = (cap >> 8) & 0xff;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
// FIXME interpret both types of params
|
||
|
|
i = ehci_readl(ehci, &ehci->caps->hcs_params);
|
||
|
|
temp = scnprintf (next, size, "structural params 0x%08x\n", i);
|
||
|
|
size -= temp;
|
||
|
|
next += temp;
|
||
|
|
|
||
|
|
i = ehci_readl(ehci, &ehci->caps->hcc_params);
|
||
|
|
temp = scnprintf (next, size, "capability params 0x%08x\n", i);
|
||
|
|
size -= temp;
|
||
|
|
next += temp;
|
||
|
|
|
||
|
|
/* Operational Registers */
|
||
|
|
temp = dbg_status_buf (scratch, sizeof scratch, label,
|
||
|
|
ehci_readl(ehci, &ehci->regs->status));
|
||
|
|
temp = scnprintf (next, size, fmt, temp, scratch);
|
||
|
|
size -= temp;
|
||
|
|
next += temp;
|
||
|
|
|
||
|
|
temp = dbg_command_buf (scratch, sizeof scratch, label,
|
||
|
|
ehci_readl(ehci, &ehci->regs->command));
|
||
|
|
temp = scnprintf (next, size, fmt, temp, scratch);
|
||
|
|
size -= temp;
|
||
|
|
next += temp;
|
||
|
|
|
||
|
|
temp = dbg_intr_buf (scratch, sizeof scratch, label,
|
||
|
|
ehci_readl(ehci, &ehci->regs->intr_enable));
|
||
|
|
temp = scnprintf (next, size, fmt, temp, scratch);
|
||
|
|
size -= temp;
|
||
|
|
next += temp;
|
||
|
|
|
||
|
|
temp = scnprintf (next, size, "uframe %04x\n",
|
||
|
|
ehci_read_frame_index(ehci));
|
||
|
|
size -= temp;
|
||
|
|
next += temp;
|
||
|
|
|
||
|
|
for (i = 1; i <= HCS_N_PORTS (ehci->hcs_params); i++) {
|
||
|
|
temp = dbg_port_buf (scratch, sizeof scratch, label, i,
|
||
|
|
ehci_readl(ehci,
|
||
|
|
&ehci->regs->port_status[i - 1]));
|
||
|
|
temp = scnprintf (next, size, fmt, temp, scratch);
|
||
|
|
size -= temp;
|
||
|
|
next += temp;
|
||
|
|
if (i == HCS_DEBUG_PORT(ehci->hcs_params) && ehci->debug) {
|
||
|
|
temp = scnprintf (next, size,
|
||
|
|
" debug control %08x\n",
|
||
|
|
ehci_readl(ehci,
|
||
|
|
&ehci->debug->control));
|
||
|
|
size -= temp;
|
||
|
|
next += temp;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!list_empty(&ehci->async_unlink)) {
|
||
|
|
temp = scnprintf(next, size, "async unlink qh %p\n",
|
||
|
|
list_first_entry(&ehci->async_unlink,
|
||
|
|
struct ehci_qh, unlink_node));
|
||
|
|
size -= temp;
|
||
|
|
next += temp;
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifdef EHCI_STATS
|
||
|
|
temp = scnprintf (next, size,
|
||
|
|
"irq normal %ld err %ld iaa %ld (lost %ld)\n",
|
||
|
|
ehci->stats.normal, ehci->stats.error, ehci->stats.iaa,
|
||
|
|
ehci->stats.lost_iaa);
|
||
|
|
size -= temp;
|
||
|
|
next += temp;
|
||
|
|
|
||
|
|
temp = scnprintf (next, size, "complete %ld unlink %ld\n",
|
||
|
|
ehci->stats.complete, ehci->stats.unlink);
|
||
|
|
size -= temp;
|
||
|
|
next += temp;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
done:
|
||
|
|
spin_unlock_irqrestore (&ehci->lock, flags);
|
||
|
|
|
||
|
|
return buf->alloc_size - size;
|
||
|
|
}
|
||
|
|
|
||
|
|
static struct debug_buffer *alloc_buffer(struct usb_bus *bus,
|
||
|
|
ssize_t (*fill_func)(struct debug_buffer *))
|
||
|
|
{
|
||
|
|
struct debug_buffer *buf;
|
||
|
|
|
||
|
|
buf = kzalloc(sizeof(struct debug_buffer), GFP_KERNEL);
|
||
|
|
|
||
|
|
if (buf) {
|
||
|
|
buf->bus = bus;
|
||
|
|
buf->fill_func = fill_func;
|
||
|
|
mutex_init(&buf->mutex);
|
||
|
|
buf->alloc_size = PAGE_SIZE;
|
||
|
|
}
|
||
|
|
|
||
|
|
return buf;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int fill_buffer(struct debug_buffer *buf)
|
||
|
|
{
|
||
|
|
int ret = 0;
|
||
|
|
|
||
|
|
if (!buf->output_buf)
|
||
|
|
buf->output_buf = vmalloc(buf->alloc_size);
|
||
|
|
|
||
|
|
if (!buf->output_buf) {
|
||
|
|
ret = -ENOMEM;
|
||
|
|
goto out;
|
||
|
|
}
|
||
|
|
|
||
|
|
ret = buf->fill_func(buf);
|
||
|
|
|
||
|
|
if (ret >= 0) {
|
||
|
|
buf->count = ret;
|
||
|
|
ret = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
out:
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
static ssize_t debug_output(struct file *file, char __user *user_buf,
|
||
|
|
size_t len, loff_t *offset)
|
||
|
|
{
|
||
|
|
struct debug_buffer *buf = file->private_data;
|
||
|
|
int ret = 0;
|
||
|
|
|
||
|
|
mutex_lock(&buf->mutex);
|
||
|
|
if (buf->count == 0) {
|
||
|
|
ret = fill_buffer(buf);
|
||
|
|
if (ret != 0) {
|
||
|
|
mutex_unlock(&buf->mutex);
|
||
|
|
goto out;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
mutex_unlock(&buf->mutex);
|
||
|
|
|
||
|
|
ret = simple_read_from_buffer(user_buf, len, offset,
|
||
|
|
buf->output_buf, buf->count);
|
||
|
|
|
||
|
|
out:
|
||
|
|
return ret;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
static int debug_close(struct inode *inode, struct file *file)
|
||
|
|
{
|
||
|
|
struct debug_buffer *buf = file->private_data;
|
||
|
|
|
||
|
|
if (buf) {
|
||
|
|
vfree(buf->output_buf);
|
||
|
|
kfree(buf);
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int debug_async_open(struct inode *inode, struct file *file)
|
||
|
|
{
|
||
|
|
file->private_data = alloc_buffer(inode->i_private, fill_async_buffer);
|
||
|
|
|
||
|
|
return file->private_data ? 0 : -ENOMEM;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int debug_bandwidth_open(struct inode *inode, struct file *file)
|
||
|
|
{
|
||
|
|
file->private_data = alloc_buffer(inode->i_private,
|
||
|
|
fill_bandwidth_buffer);
|
||
|
|
|
||
|
|
return file->private_data ? 0 : -ENOMEM;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int debug_periodic_open(struct inode *inode, struct file *file)
|
||
|
|
{
|
||
|
|
struct debug_buffer *buf;
|
||
|
|
buf = alloc_buffer(inode->i_private, fill_periodic_buffer);
|
||
|
|
if (!buf)
|
||
|
|
return -ENOMEM;
|
||
|
|
|
||
|
|
buf->alloc_size = (sizeof(void *) == 4 ? 6 : 8)*PAGE_SIZE;
|
||
|
|
file->private_data = buf;
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int debug_registers_open(struct inode *inode, struct file *file)
|
||
|
|
{
|
||
|
|
file->private_data = alloc_buffer(inode->i_private,
|
||
|
|
fill_registers_buffer);
|
||
|
|
|
||
|
|
return file->private_data ? 0 : -ENOMEM;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void create_debug_files (struct ehci_hcd *ehci)
|
||
|
|
{
|
||
|
|
struct usb_bus *bus = &ehci_to_hcd(ehci)->self;
|
||
|
|
|
||
|
|
ehci->debug_dir = debugfs_create_dir(bus->bus_name, ehci_debug_root);
|
||
|
|
if (!ehci->debug_dir)
|
||
|
|
return;
|
||
|
|
|
||
|
|
if (!debugfs_create_file("async", S_IRUGO, ehci->debug_dir, bus,
|
||
|
|
&debug_async_fops))
|
||
|
|
goto file_error;
|
||
|
|
|
||
|
|
if (!debugfs_create_file("bandwidth", S_IRUGO, ehci->debug_dir, bus,
|
||
|
|
&debug_bandwidth_fops))
|
||
|
|
goto file_error;
|
||
|
|
|
||
|
|
if (!debugfs_create_file("periodic", S_IRUGO, ehci->debug_dir, bus,
|
||
|
|
&debug_periodic_fops))
|
||
|
|
goto file_error;
|
||
|
|
|
||
|
|
if (!debugfs_create_file("registers", S_IRUGO, ehci->debug_dir, bus,
|
||
|
|
&debug_registers_fops))
|
||
|
|
goto file_error;
|
||
|
|
|
||
|
|
return;
|
||
|
|
|
||
|
|
file_error:
|
||
|
|
debugfs_remove_recursive(ehci->debug_dir);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void remove_debug_files (struct ehci_hcd *ehci)
|
||
|
|
{
|
||
|
|
debugfs_remove_recursive(ehci->debug_dir);
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif /* STUB_DEBUG_FILES */
|