Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
This commit is contained in:
Linus Torvalds
755
drivers/usb/host/ehci-dbg.c
Normal file
755
drivers/usb/host/ehci-dbg.c
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@@ -0,0 +1,755 @@
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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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#define ehci_dbg(ehci, fmt, args...) \
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dev_dbg (ehci_to_hcd(ehci)->self.controller , fmt , ## args )
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#define ehci_err(ehci, fmt, args...) \
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dev_err (ehci_to_hcd(ehci)->self.controller , fmt , ## args )
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#define ehci_info(ehci, fmt, args...) \
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dev_info (ehci_to_hcd(ehci)->self.controller , fmt , ## args )
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#define ehci_warn(ehci, fmt, args...) \
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dev_warn (ehci_to_hcd(ehci)->self.controller , fmt , ## args )
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#ifdef EHCI_VERBOSE_DEBUG
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# define vdbg dbg
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# define ehci_vdbg ehci_dbg
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#else
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# define vdbg(fmt,args...) do { } while (0)
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# define ehci_vdbg(ehci, fmt, args...) do { } while (0)
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#endif
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#ifdef 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 = readl (&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 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 = readl (&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\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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}
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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 DEBUG
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static void __attribute__((__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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le32_to_cpup (&qtd->hw_next),
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le32_to_cpup (&qtd->hw_alt_next),
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le32_to_cpup (&qtd->hw_token),
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le32_to_cpup (&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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le32_to_cpup (&qtd->hw_buf [1]),
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le32_to_cpup (&qtd->hw_buf [2]),
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le32_to_cpup (&qtd->hw_buf [3]),
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le32_to_cpup (&qtd->hw_buf [4]));
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}
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static void __attribute__((__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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ehci_dbg (ehci, "%s qh %p n%08x info %x %x qtd %x\n", label,
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qh, qh->hw_next, qh->hw_info1, qh->hw_info2,
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qh->hw_current);
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dbg_qtd ("overlay", ehci, (struct ehci_qtd *) &qh->hw_qtd_next);
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}
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static void __attribute__((__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, le32_to_cpu(itd->hw_next), 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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le32_to_cpu(itd->hw_transaction[0]),
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le32_to_cpu(itd->hw_transaction[1]),
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le32_to_cpu(itd->hw_transaction[2]),
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le32_to_cpu(itd->hw_transaction[3]),
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le32_to_cpu(itd->hw_transaction[4]),
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le32_to_cpu(itd->hw_transaction[5]),
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le32_to_cpu(itd->hw_transaction[6]),
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le32_to_cpu(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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le32_to_cpu(itd->hw_bufp[0]),
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le32_to_cpu(itd->hw_bufp[1]),
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le32_to_cpu(itd->hw_bufp[2]),
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le32_to_cpu(itd->hw_bufp[3]),
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le32_to_cpu(itd->hw_bufp[4]),
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le32_to_cpu(itd->hw_bufp[5]),
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le32_to_cpu(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 __attribute__((__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, le32_to_cpu(sitd->hw_next), 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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le32_to_cpu(sitd->hw_fullspeed_ep),
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le32_to_cpu(sitd->hw_uframe),
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le32_to_cpu(sitd->hw_results),
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le32_to_cpu(sitd->hw_buf [0]),
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le32_to_cpu(sitd->hw_buf [1]));
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}
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static int __attribute__((__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",
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label, label [0] ? " " : "", status,
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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 __attribute__((__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",
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label, label [0] ? " " : "", enable,
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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 %06x %s=%d ithresh=%d%s%s%s%s period=%s%s %s",
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label, label [0] ? " " : "", command,
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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%s%s sig=%s %s%s%s%s%s%s%s%s%s",
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label, label [0] ? " " : "", port, status,
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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_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 __attribute__((__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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static inline int __attribute__((__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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static inline int __attribute__((__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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static inline int __attribute__((__unused__))
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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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static inline int __attribute__((__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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#endif /* DEBUG */
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/* functions have the "wrong" filename when they're output... */
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#define dbg_status(ehci, label, status) { \
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char _buf [80]; \
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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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#define dbg_cmd(ehci, label, command) { \
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char _buf [80]; \
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dbg_command_buf (_buf, sizeof _buf, label, command); \
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ehci_dbg (ehci, "%s\n", _buf); \
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}
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#define dbg_port(ehci, label, port, status) { \
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char _buf [80]; \
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dbg_port_buf (_buf, sizeof _buf, label, port, status); \
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ehci_dbg (ehci, "%s\n", _buf); \
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}
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/*-------------------------------------------------------------------------*/
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#ifdef STUB_DEBUG_FILES
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static inline void create_debug_files (struct ehci_hcd *bus) { }
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static inline void remove_debug_files (struct ehci_hcd *bus) { }
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#else
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/* troubleshooting help: expose state in driverfs */
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#define speed_char(info1) ({ char tmp; \
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switch (info1 & (3 << 12)) { \
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case 0 << 12: tmp = 'f'; break; \
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case 1 << 12: tmp = 'l'; break; \
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case 2 << 12: tmp = 'h'; break; \
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default: tmp = '?'; break; \
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}; tmp; })
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static inline char token_mark (__le32 token)
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{
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__u32 v = le32_to_cpu (token);
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if (v & QTD_STS_ACTIVE)
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return '*';
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if (v & QTD_STS_HALT)
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return '-';
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||||
if (!IS_SHORT_READ (v))
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return ' ';
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/* tries to advance through hw_alt_next */
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return '/';
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}
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static void qh_lines (
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struct ehci_hcd *ehci,
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struct ehci_qh *qh,
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char **nextp,
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unsigned *sizep
|
||||
)
|
||||
{
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u32 scratch;
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u32 hw_curr;
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struct list_head *entry;
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struct ehci_qtd *td;
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unsigned temp;
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unsigned size = *sizep;
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char *next = *nextp;
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char mark;
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if (qh->hw_qtd_next == EHCI_LIST_END) /* NEC does this */
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mark = '@';
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else
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mark = token_mark (qh->hw_token);
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if (mark == '/') { /* qh_alt_next controls qh advance? */
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if ((qh->hw_alt_next & QTD_MASK) == ehci->async->hw_alt_next)
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mark = '#'; /* blocked */
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else if (qh->hw_alt_next == EHCI_LIST_END)
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mark = '.'; /* use hw_qtd_next */
|
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/* else alt_next points to some other qtd */
|
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}
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scratch = le32_to_cpup (&qh->hw_info1);
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hw_curr = (mark == '*') ? le32_to_cpup (&qh->hw_current) : 0;
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temp = scnprintf (next, size,
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"qh/%p dev%d %cs ep%d %08x %08x (%08x%c %s nak%d)",
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||||
qh, scratch & 0x007f,
|
||||
speed_char (scratch),
|
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(scratch >> 8) & 0x000f,
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scratch, le32_to_cpup (&qh->hw_info2),
|
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le32_to_cpup (&qh->hw_token), mark,
|
||||
(__constant_cpu_to_le32 (QTD_TOGGLE) & qh->hw_token)
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||||
? "data1" : "data0",
|
||||
(le32_to_cpup (&qh->hw_alt_next) >> 1) & 0x0f);
|
||||
size -= temp;
|
||||
next += temp;
|
||||
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||||
/* 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 = le32_to_cpup (&td->hw_token);
|
||||
mark = ' ';
|
||||
if (hw_curr == td->qtd_dma)
|
||||
mark = '*';
|
||||
else if (qh->hw_qtd_next == td->qtd_dma)
|
||||
mark = '+';
|
||||
else if (QTD_LENGTH (scratch)) {
|
||||
if (td->hw_alt_next == ehci->async->hw_alt_next)
|
||||
mark = '#';
|
||||
else if (td->hw_alt_next != EHCI_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 (temp < 0)
|
||||
temp = 0;
|
||||
else if (size < temp)
|
||||
temp = size;
|
||||
size -= temp;
|
||||
next += temp;
|
||||
if (temp == size)
|
||||
goto done;
|
||||
}
|
||||
|
||||
temp = snprintf (next, size, "\n");
|
||||
if (temp < 0)
|
||||
temp = 0;
|
||||
else if (size < temp)
|
||||
temp = size;
|
||||
size -= temp;
|
||||
next += temp;
|
||||
|
||||
done:
|
||||
*sizep = size;
|
||||
*nextp = next;
|
||||
}
|
||||
|
||||
static ssize_t
|
||||
show_async (struct class_device *class_dev, char *buf)
|
||||
{
|
||||
struct usb_bus *bus;
|
||||
struct usb_hcd *hcd;
|
||||
struct ehci_hcd *ehci;
|
||||
unsigned long flags;
|
||||
unsigned temp, size;
|
||||
char *next;
|
||||
struct ehci_qh *qh;
|
||||
|
||||
*buf = 0;
|
||||
|
||||
bus = to_usb_bus(class_dev);
|
||||
hcd = bus->hcpriv;
|
||||
ehci = hcd_to_ehci (hcd);
|
||||
next = buf;
|
||||
size = PAGE_SIZE;
|
||||
|
||||
/* 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 (ehci->reclaim && size > 0) {
|
||||
temp = scnprintf (next, size, "\nreclaim =\n");
|
||||
size -= temp;
|
||||
next += temp;
|
||||
|
||||
for (qh = ehci->reclaim; size > 0 && qh; qh = qh->reclaim)
|
||||
qh_lines (ehci, qh, &next, &size);
|
||||
}
|
||||
spin_unlock_irqrestore (&ehci->lock, flags);
|
||||
|
||||
return strlen (buf);
|
||||
}
|
||||
static CLASS_DEVICE_ATTR (async, S_IRUGO, show_async, NULL);
|
||||
|
||||
#define DBG_SCHED_LIMIT 64
|
||||
|
||||
static ssize_t
|
||||
show_periodic (struct class_device *class_dev, char *buf)
|
||||
{
|
||||
struct usb_bus *bus;
|
||||
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;
|
||||
__le32 tag;
|
||||
|
||||
if (!(seen = kmalloc (DBG_SCHED_LIMIT * sizeof *seen, SLAB_ATOMIC)))
|
||||
return 0;
|
||||
seen_count = 0;
|
||||
|
||||
bus = to_usb_bus(class_dev);
|
||||
hcd = bus->hcpriv;
|
||||
ehci = hcd_to_ehci (hcd);
|
||||
next = buf;
|
||||
size = PAGE_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->periodic [i]);
|
||||
|
||||
temp = scnprintf (next, size, "%4d: ", i);
|
||||
size -= temp;
|
||||
next += temp;
|
||||
|
||||
do {
|
||||
switch (tag) {
|
||||
case Q_TYPE_QH:
|
||||
temp = scnprintf (next, size, " qh%d-%04x/%p",
|
||||
p.qh->period,
|
||||
le32_to_cpup (&p.qh->hw_info2)
|
||||
/* uframe masks */
|
||||
& 0xffff,
|
||||
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,
|
||||
" ...");
|
||||
p.ptr = NULL;
|
||||
break;
|
||||
}
|
||||
/* show more info the first time around */
|
||||
if (temp == seen_count && p.ptr) {
|
||||
u32 scratch = le32_to_cpup (
|
||||
&p.qh->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 & (le32_to_cpu (
|
||||
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->usecs, p.qh->c_usecs,
|
||||
temp,
|
||||
0x7ff & (scratch >> 16));
|
||||
|
||||
if (seen_count < DBG_SCHED_LIMIT)
|
||||
seen [seen_count++].qh = p.qh;
|
||||
} else
|
||||
temp = 0;
|
||||
if (p.qh) {
|
||||
tag = Q_NEXT_TYPE (p.qh->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 (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 (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->interval,
|
||||
le32_to_cpup (&p.sitd->hw_uframe)
|
||||
& 0x0000ffff,
|
||||
p.sitd);
|
||||
tag = Q_NEXT_TYPE (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 PAGE_SIZE - size;
|
||||
}
|
||||
static CLASS_DEVICE_ATTR (periodic, S_IRUGO, show_periodic, NULL);
|
||||
|
||||
#undef DBG_SCHED_LIMIT
|
||||
|
||||
static ssize_t
|
||||
show_registers (struct class_device *class_dev, char *buf)
|
||||
{
|
||||
struct usb_bus *bus;
|
||||
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 [] = "";
|
||||
|
||||
bus = to_usb_bus(class_dev);
|
||||
hcd = bus->hcpriv;
|
||||
ehci = hcd_to_ehci (hcd);
|
||||
next = buf;
|
||||
size = PAGE_SIZE;
|
||||
|
||||
spin_lock_irqsave (&ehci->lock, flags);
|
||||
|
||||
if (bus->controller->power.power_state) {
|
||||
size = scnprintf (next, size,
|
||||
"bus %s, device %s (driver " DRIVER_VERSION ")\n"
|
||||
"SUSPENDED (no register access)\n",
|
||||
hcd->self.controller->bus->name,
|
||||
hcd->self.controller->bus_id);
|
||||
goto done;
|
||||
}
|
||||
|
||||
/* Capability Registers */
|
||||
i = HC_VERSION(readl (&ehci->caps->hc_capbase));
|
||||
temp = scnprintf (next, size,
|
||||
"bus %s, device %s (driver " DRIVER_VERSION ")\n"
|
||||
"EHCI %x.%02x, hcd state %d\n",
|
||||
hcd->self.controller->bus->name,
|
||||
hcd->self.controller->bus_id,
|
||||
i >> 8, i & 0x0ff, hcd->state);
|
||||
size -= temp;
|
||||
next += temp;
|
||||
|
||||
// FIXME interpret both types of params
|
||||
i = readl (&ehci->caps->hcs_params);
|
||||
temp = scnprintf (next, size, "structural params 0x%08x\n", i);
|
||||
size -= temp;
|
||||
next += temp;
|
||||
|
||||
i = readl (&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,
|
||||
readl (&ehci->regs->status));
|
||||
temp = scnprintf (next, size, fmt, temp, scratch);
|
||||
size -= temp;
|
||||
next += temp;
|
||||
|
||||
temp = dbg_command_buf (scratch, sizeof scratch, label,
|
||||
readl (&ehci->regs->command));
|
||||
temp = scnprintf (next, size, fmt, temp, scratch);
|
||||
size -= temp;
|
||||
next += temp;
|
||||
|
||||
temp = dbg_intr_buf (scratch, sizeof scratch, label,
|
||||
readl (&ehci->regs->intr_enable));
|
||||
temp = scnprintf (next, size, fmt, temp, scratch);
|
||||
size -= temp;
|
||||
next += temp;
|
||||
|
||||
temp = scnprintf (next, size, "uframe %04x\n",
|
||||
readl (&ehci->regs->frame_index));
|
||||
size -= temp;
|
||||
next += temp;
|
||||
|
||||
for (i = 0; i < HCS_N_PORTS (ehci->hcs_params); i++) {
|
||||
temp = dbg_port_buf (scratch, sizeof scratch, label, i + 1,
|
||||
readl (&ehci->regs->port_status [i]));
|
||||
temp = scnprintf (next, size, fmt, temp, scratch);
|
||||
size -= temp;
|
||||
next += temp;
|
||||
}
|
||||
|
||||
if (ehci->reclaim) {
|
||||
temp = scnprintf (next, size, "reclaim qh %p%s\n",
|
||||
ehci->reclaim,
|
||||
ehci->reclaim_ready ? " ready" : "");
|
||||
size -= temp;
|
||||
next += temp;
|
||||
}
|
||||
|
||||
#ifdef EHCI_STATS
|
||||
temp = scnprintf (next, size,
|
||||
"irq normal %ld err %ld reclaim %ld (lost %ld)\n",
|
||||
ehci->stats.normal, ehci->stats.error, ehci->stats.reclaim,
|
||||
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 PAGE_SIZE - size;
|
||||
}
|
||||
static CLASS_DEVICE_ATTR (registers, S_IRUGO, show_registers, NULL);
|
||||
|
||||
static inline void create_debug_files (struct ehci_hcd *ehci)
|
||||
{
|
||||
struct class_device *cldev = &ehci_to_hcd(ehci)->self.class_dev;
|
||||
|
||||
class_device_create_file(cldev, &class_device_attr_async);
|
||||
class_device_create_file(cldev, &class_device_attr_periodic);
|
||||
class_device_create_file(cldev, &class_device_attr_registers);
|
||||
}
|
||||
|
||||
static inline void remove_debug_files (struct ehci_hcd *ehci)
|
||||
{
|
||||
struct class_device *cldev = &ehci_to_hcd(ehci)->self.class_dev;
|
||||
|
||||
class_device_remove_file(cldev, &class_device_attr_async);
|
||||
class_device_remove_file(cldev, &class_device_attr_periodic);
|
||||
class_device_remove_file(cldev, &class_device_attr_registers);
|
||||
}
|
||||
|
||||
#endif /* STUB_DEBUG_FILES */
|
||||
|
||||
Reference in New Issue
Block a user