// SPDX-License-Identifier: GPL-2.0/* * UHCI-specific debugging code. Invaluable when something * goes wrong, but don't get in my face. * * Kernel visible pointers are surrounded in []s and bus * visible pointers are surrounded in ()s * * (C) Copyright 1999 Linus Torvalds * (C) Copyright 1999-2001 Johannes Erdfelt */ #include <linux/slab.h>#include <linux/kernel.h>#include <linux/debugfs.h>#include <asm/io.h> #include "uhci-hcd.h" #define EXTRA_SPACE 1024 static struct dentry *uhci_debugfs_root; #ifdef CONFIG_DYNAMIC_DEBUG /* Handle REALLY large printks so we don't overflow buffers */static void lprintk(char *buf){ char *p; /* Just write one line at a time */ while (buf) { p = strchr(buf, '\n'); if (p) *p = 0; printk(KERN_DEBUG "%s\n", buf); buf = p; if (buf) buf++; }} static int uhci_show_td(struct uhci_hcd *uhci, struct uhci_td *td, char *buf, int len, int space){ char *out = buf; char *spid; u32 status, token; status = td_status(uhci, td); out += sprintf(out, "%*s[%p] link (%08x) ", space, "", td, hc32_to_cpu(uhci, td->link)); out += sprintf(out, "e%d %s%s%s%s%s%s%s%s%s%sLength=%x ", ((status >> 27) & 3), (status & TD_CTRL_SPD) ? "SPD " : "", (status & TD_CTRL_LS) ? "LS " : "", (status & TD_CTRL_IOC) ? "IOC " : "", (status & TD_CTRL_ACTIVE) ? "Active " : "", (status & TD_CTRL_STALLED) ? "Stalled " : "", (status & TD_CTRL_DBUFERR) ? "DataBufErr " : "", (status & TD_CTRL_BABBLE) ? "Babble " : "", (status & TD_CTRL_NAK) ? "NAK " : "", (status & TD_CTRL_CRCTIMEO) ? "CRC/Timeo " : "", (status & TD_CTRL_BITSTUFF) ? "BitStuff " : "", status & 0x7ff); if (out - buf > len) goto done; token = td_token(uhci, td); switch (uhci_packetid(token)) { case USB_PID_SETUP: spid = "SETUP"; break; case USB_PID_OUT: spid = "OUT"; break; case USB_PID_IN: spid = "IN"; break; default: spid = "?"; break; } out += sprintf(out, "MaxLen=%x DT%d EndPt=%x Dev=%x, PID=%x(%s) ", token >> 21, ((token >> 19) & 1), (token >> 15) & 15, (token >> 8) & 127, (token & 0xff), spid); out += sprintf(out, "(buf=%08x)\n", hc32_to_cpu(uhci, td->buffer)); done: if (out - buf > len) out += sprintf(out, " ...\n"); return out - buf;} static int uhci_show_urbp(struct uhci_hcd *uhci, struct urb_priv *urbp, char *buf, int len, int space){ char *out = buf; struct uhci_td *td; int i, nactive, ninactive; char *ptype; out += sprintf(out, "urb_priv [%p] ", urbp); out += sprintf(out, "urb [%p] ", urbp->urb); out += sprintf(out, "qh [%p] ", urbp->qh); out += sprintf(out, "Dev=%d ", usb_pipedevice(urbp->urb->pipe)); out += sprintf(out, "EP=%x(%s) ", usb_pipeendpoint(urbp->urb->pipe), (usb_pipein(urbp->urb->pipe) ? "IN" : "OUT")); if (out - buf > len) goto done; switch (usb_pipetype(urbp->urb->pipe)) { case PIPE_ISOCHRONOUS: ptype = "ISO"; break; case PIPE_INTERRUPT: ptype = "INT"; break; case PIPE_BULK: ptype = "BLK"; break; default: case PIPE_CONTROL: ptype = "CTL"; break; } out += sprintf(out, "%s%s", ptype, (urbp->fsbr ? " FSBR" : "")); out += sprintf(out, " Actlen=%d%s", urbp->urb->actual_length, (urbp->qh->type == USB_ENDPOINT_XFER_CONTROL ? "-8" : "")); if (urbp->urb->unlinked) out += sprintf(out, " Unlinked=%d", urbp->urb->unlinked); out += sprintf(out, "\n"); if (out - buf > len) goto done; i = nactive = ninactive = 0; list_for_each_entry(td, &urbp->td_list, list) { if (urbp->qh->type != USB_ENDPOINT_XFER_ISOC && (++i <= 10 || debug > 2)) { out += sprintf(out, "%*s%d: ", space + 2, "", i); out += uhci_show_td(uhci, td, out, len - (out - buf), 0); if (out - buf > len) goto tail; } else { if (td_status(uhci, td) & TD_CTRL_ACTIVE) ++nactive; else ++ninactive; } } if (nactive + ninactive > 0) out += sprintf(out, "%*s[skipped %d inactive and %d active TDs]\n", space, "", ninactive, nactive);done: if (out - buf > len) out += sprintf(out, " ...\n");tail: return out - buf;} static int uhci_show_qh(struct uhci_hcd *uhci, struct uhci_qh *qh, char *buf, int len, int space){ char *out = buf; int i, nurbs; __hc32 element = qh_element(qh); char *qtype; switch (qh->type) { case USB_ENDPOINT_XFER_ISOC: qtype = "ISO"; break; case USB_ENDPOINT_XFER_INT: qtype = "INT"; break; case USB_ENDPOINT_XFER_BULK: qtype = "BLK"; break; case USB_ENDPOINT_XFER_CONTROL: qtype = "CTL"; break; default: qtype = "Skel" ; break; } out += sprintf(out, "%*s[%p] %s QH link (%08x) element (%08x)\n", space, "", qh, qtype, hc32_to_cpu(uhci, qh->link), hc32_to_cpu(uhci, element)); if (qh->type == USB_ENDPOINT_XFER_ISOC) out += sprintf(out, "%*s period %d phase %d load %d us, frame %x desc [%p]\n", space, "", qh->period, qh->phase, qh->load, qh->iso_frame, qh->iso_packet_desc); else if (qh->type == USB_ENDPOINT_XFER_INT) out += sprintf(out, "%*s period %d phase %d load %d us\n", space, "", qh->period, qh->phase, qh->load); if (out - buf > len) goto done; if (element & UHCI_PTR_QH(uhci)) out += sprintf(out, "%*s Element points to QH (bug?)\n", space, ""); if (element & UHCI_PTR_DEPTH(uhci)) out += sprintf(out, "%*s Depth traverse\n", space, ""); if (element & cpu_to_hc32(uhci, 8)) out += sprintf(out, "%*s Bit 3 set (bug?)\n", space, ""); if (!(element & ~(UHCI_PTR_QH(uhci) | UHCI_PTR_DEPTH(uhci)))) out += sprintf(out, "%*s Element is NULL (bug?)\n", space, ""); if (out - buf > len) goto done; if (list_empty(&qh->queue)) { out += sprintf(out, "%*s queue is empty\n", space, ""); if (qh == uhci->skel_async_qh) { out += uhci_show_td(uhci, uhci->term_td, out, len - (out - buf), 0); if (out - buf > len) goto tail; } } else { struct urb_priv *urbp = list_entry(qh->queue.next, struct urb_priv, node); struct uhci_td *td = list_entry(urbp->td_list.next, struct uhci_td, list); if (element != LINK_TO_TD(uhci, td)) out += sprintf(out, "%*s Element != First TD\n", space, ""); i = nurbs = 0; list_for_each_entry(urbp, &qh->queue, node) { if (++i <= 10) { out += uhci_show_urbp(uhci, urbp, out, len - (out - buf), space + 2); if (out - buf > len) goto tail; } else ++nurbs; } if (nurbs > 0) out += sprintf(out, "%*s Skipped %d URBs\n", space, "", nurbs); } if (out - buf > len) goto done; if (qh->dummy_td) { out += sprintf(out, "%*s Dummy TD\n", space, ""); out += uhci_show_td(uhci, qh->dummy_td, out, len - (out - buf), 0); if (out - buf > len) goto tail; } done: if (out - buf > len) out += sprintf(out, " ...\n");tail: return out - buf;} static int uhci_show_sc(int port, unsigned short status, char *buf){ return sprintf(buf, " stat%d = %04x %s%s%s%s%s%s%s%s%s%s\n", port, status, (status & USBPORTSC_SUSP) ? " Suspend" : "", (status & USBPORTSC_OCC) ? " OverCurrentChange" : "", (status & USBPORTSC_OC) ? " OverCurrent" : "", (status & USBPORTSC_PR) ? " Reset" : "", (status & USBPORTSC_LSDA) ? " LowSpeed" : "", (status & USBPORTSC_RD) ? " ResumeDetect" : "", (status & USBPORTSC_PEC) ? " EnableChange" : "", (status & USBPORTSC_PE) ? " Enabled" : "", (status & USBPORTSC_CSC) ? " ConnectChange" : "", (status & USBPORTSC_CCS) ? " Connected" : "");} static int uhci_show_root_hub_state(struct uhci_hcd *uhci, char *buf){ char *rh_state; switch (uhci->rh_state) { case UHCI_RH_RESET: rh_state = "reset"; break; case UHCI_RH_SUSPENDED: rh_state = "suspended"; break; case UHCI_RH_AUTO_STOPPED: rh_state = "auto-stopped"; break; case UHCI_RH_RESUMING: rh_state = "resuming"; break; case UHCI_RH_SUSPENDING: rh_state = "suspending"; break; case UHCI_RH_RUNNING: rh_state = "running"; break; case UHCI_RH_RUNNING_NODEVS: rh_state = "running, no devs"; break; default: rh_state = "?"; break; } return sprintf(buf, "Root-hub state: %s FSBR: %d\n", rh_state, uhci->fsbr_is_on);} static int uhci_show_status(struct uhci_hcd *uhci, char *buf, int len){ char *out = buf; unsigned short usbcmd, usbstat, usbint, usbfrnum; unsigned int flbaseadd; unsigned char sof; unsigned short portsc1, portsc2; usbcmd = uhci_readw(uhci, USBCMD); usbstat = uhci_readw(uhci, USBSTS); usbint = uhci_readw(uhci, USBINTR); usbfrnum = uhci_readw(uhci, USBFRNUM); flbaseadd = uhci_readl(uhci, USBFLBASEADD); sof = uhci_readb(uhci, USBSOF); portsc1 = uhci_readw(uhci, USBPORTSC1); portsc2 = uhci_readw(uhci, USBPORTSC2); out += sprintf(out, " usbcmd = %04x %s%s%s%s%s%s%s%s\n", usbcmd, (usbcmd & USBCMD_MAXP) ? "Maxp64 " : "Maxp32 ", (usbcmd & USBCMD_CF) ? "CF " : "", (usbcmd & USBCMD_SWDBG) ? "SWDBG " : "", (usbcmd & USBCMD_FGR) ? "FGR " : "", (usbcmd & USBCMD_EGSM) ? "EGSM " : "", (usbcmd & USBCMD_GRESET) ? "GRESET " : "", (usbcmd & USBCMD_HCRESET) ? "HCRESET " : "", (usbcmd & USBCMD_RS) ? "RS " : ""); if (out - buf > len) goto done; out += sprintf(out, " usbstat = %04x %s%s%s%s%s%s\n", usbstat, (usbstat & USBSTS_HCH) ? "HCHalted " : "", (usbstat & USBSTS_HCPE) ? "HostControllerProcessError " : "", (usbstat & USBSTS_HSE) ? "HostSystemError " : "", (usbstat & USBSTS_RD) ? "ResumeDetect " : "", (usbstat & USBSTS_ERROR) ? "USBError " : "", (usbstat & USBSTS_USBINT) ? "USBINT " : ""); if (out - buf > len) goto done; out += sprintf(out, " usbint = %04x\n", usbint); out += sprintf(out, " usbfrnum = (%d)%03x\n", (usbfrnum >> 10) & 1, 0xfff & (4*(unsigned int)usbfrnum)); out += sprintf(out, " flbaseadd = %08x\n", flbaseadd); out += sprintf(out, " sof = %02x\n", sof); if (out - buf > len) goto done; out += uhci_show_sc(1, portsc1, out); if (out - buf > len) goto done; out += uhci_show_sc(2, portsc2, out); if (out - buf > len) goto done; out += sprintf(out, "Most recent frame: %x (%d) Last ISO frame: %x (%d)\n", uhci->frame_number, uhci->frame_number & 1023, uhci->last_iso_frame, uhci->last_iso_frame & 1023); done: if (out - buf > len) out += sprintf(out, " ...\n"); return out - buf;} static int uhci_sprint_schedule(struct uhci_hcd *uhci, char *buf, int len){ char *out = buf; int i, j; struct uhci_qh *qh; struct uhci_td *td; struct list_head *tmp, *head; int nframes, nerrs; __hc32 link; __hc32 fsbr_link; static const char * const qh_names[] = { "unlink", "iso", "int128", "int64", "int32", "int16", "int8", "int4", "int2", "async", "term" }; out += uhci_show_root_hub_state(uhci, out); if (out - buf > len) goto done; out += sprintf(out, "HC status\n"); out += uhci_show_status(uhci, out, len - (out - buf)); if (out - buf > len) goto tail; out += sprintf(out, "Periodic load table\n"); for (i = 0; i < MAX_PHASE; ++i) { out += sprintf(out, "\t%d", uhci->load[i]); if (i % 8 == 7) *out++ = '\n'; } out += sprintf(out, "Total: %d, #INT: %d, #ISO: %d\n", uhci->total_load, uhci_to_hcd(uhci)->self.bandwidth_int_reqs, uhci_to_hcd(uhci)->self.bandwidth_isoc_reqs); if (debug <= 1) goto tail; out += sprintf(out, "Frame List\n"); nframes = 10; nerrs = 0; for (i = 0; i < UHCI_NUMFRAMES; ++i) { __hc32 qh_dma; if (out - buf > len) goto done; j = 0; td = uhci->frame_cpu[i]; link = uhci->frame[i]; if (!td) goto check_link; if (nframes > 0) { out += sprintf(out, "- Frame %d -> (%08x)\n", i, hc32_to_cpu(uhci, link)); j = 1; } head = &td->fl_list; tmp = head; do { td = list_entry(tmp, struct uhci_td, fl_list); tmp = tmp->next; if (link != LINK_TO_TD(uhci, td)) { if (nframes > 0) { out += sprintf(out, " link does not match list entry!\n"); if (out - buf > len) goto done; } else ++nerrs; } if (nframes > 0) { out += uhci_show_td(uhci, td, out, len - (out - buf), 4); if (out - buf > len) goto tail; } link = td->link; } while (tmp != head); check_link: qh_dma = uhci_frame_skel_link(uhci, i); if (link != qh_dma) { if (nframes > 0) { if (!j) { out += sprintf(out, "- Frame %d -> (%08x)\n", i, hc32_to_cpu(uhci, link)); j = 1; } out += sprintf(out, " link does not match QH (%08x)!\n", hc32_to_cpu(uhci, qh_dma)); if (out - buf > len) goto done; } else ++nerrs; } nframes -= j; } if (nerrs > 0) out += sprintf(out, "Skipped %d bad links\n", nerrs); out += sprintf(out, "Skeleton QHs\n"); if (out - buf > len) goto done; fsbr_link = 0; for (i = 0; i < UHCI_NUM_SKELQH; ++i) { int cnt = 0; qh = uhci->skelqh[i]; out += sprintf(out, "- skel_%s_qh\n", qh_names[i]); out += uhci_show_qh(uhci, qh, out, len - (out - buf), 4); if (out - buf > len) goto tail; /* Last QH is the Terminating QH, it's different */ if (i == SKEL_TERM) { if (qh_element(qh) != LINK_TO_TD(uhci, uhci->term_td)) { out += sprintf(out, " skel_term_qh element is not set to term_td!\n"); if (out - buf > len) goto done; } link = fsbr_link;Lines 1–500 of 637. Load more
// SPDX-License-Identifier: GPL-2.0 /* * UHCI-specific debugging code. Invaluable when something * goes wrong, but don't get in my face. * * Kernel visible pointers are surrounded in []s and bus * visible pointers are surrounded in ()s * * (C) Copyright 1999 Linus Torvalds * (C) Copyright 1999-2001 Johannes Erdfelt */ #include <linux/slab.h> #include <linux/kernel.h> #include <linux/debugfs.h> #include <asm/io.h> #include "uhci-hcd.h" #define EXTRA_SPACE 1024 static struct dentry *uhci_debugfs_root; #ifdef CONFIG_DYNAMIC_DEBUG /* Handle REALLY large printks so we don't overflow buffers */ static void lprintk(char *buf) { char *p; /* Just write one line at a time */ while (buf) { p = strchr(buf, '\n'); if (p) *p = 0; printk(KERN_DEBUG "%s\n", buf); buf = p; if (buf) buf++; } } static int uhci_show_td(struct uhci_hcd *uhci, struct uhci_td *td, char *buf, int len, int space) { char *out = buf; char *spid; u32 status, token; status = td_status(uhci, td); out += sprintf(out, "%*s[%p] link (%08x) ", space, "", td, hc32_to_cpu(uhci, td->link)); out += sprintf(out, "e%d %s%s%s%s%s%s%s%s%s%sLength=%x ", ((status >> 27) & 3), (status & TD_CTRL_SPD) ? "SPD " : "", (status & TD_CTRL_LS) ? "LS " : "", (status & TD_CTRL_IOC) ? "IOC " : "", (status & TD_CTRL_ACTIVE) ? "Active " : "", (status & TD_CTRL_STALLED) ? "Stalled " : "", (status & TD_CTRL_DBUFERR) ? "DataBufErr " : "", (status & TD_CTRL_BABBLE) ? "Babble " : "", (status & TD_CTRL_NAK) ? "NAK " : "", (status & TD_CTRL_CRCTIMEO) ? "CRC/Timeo " : "", (status & TD_CTRL_BITSTUFF) ? "BitStuff " : "", status & 0x7ff); if (out - buf > len) goto done; token = td_token(uhci, td); switch (uhci_packetid(token)) { case USB_PID_SETUP: spid = "SETUP"; break; case USB_PID_OUT: spid = "OUT"; break; case USB_PID_IN: spid = "IN"; break; default: spid = "?"; break; } out += sprintf(out, "MaxLen=%x DT%d EndPt=%x Dev=%x, PID=%x(%s) ", token >> 21, ((token >> 19) & 1), (token >> 15) & 15, (token >> 8) & 127, (token & 0xff), spid); out += sprintf(out, "(buf=%08x)\n", hc32_to_cpu(uhci, td->buffer)); done: if (out - buf > len) out += sprintf(out, " ...\n"); return out - buf; } static int uhci_show_urbp(struct uhci_hcd *uhci, struct urb_priv *urbp, char *buf, int len, int space) { char *out = buf; struct uhci_td *td; int i, nactive, ninactive; char *ptype; out += sprintf(out, "urb_priv [%p] ", urbp); out += sprintf(out, "urb [%p] ", urbp->urb); out += sprintf(out, "qh [%p] ", urbp->qh); out += sprintf(out, "Dev=%d ", usb_pipedevice(urbp->urb->pipe)); out += sprintf(out, "EP=%x(%s) ", usb_pipeendpoint(urbp->urb->pipe), (usb_pipein(urbp->urb->pipe) ? "IN" : "OUT")); if (out - buf > len) goto done; switch (usb_pipetype(urbp->urb->pipe)) { case PIPE_ISOCHRONOUS: ptype = "ISO"; break; case PIPE_INTERRUPT: ptype = "INT"; break; case PIPE_BULK: ptype = "BLK"; break; default: case PIPE_CONTROL: ptype = "CTL"; break; } out += sprintf(out, "%s%s", ptype, (urbp->fsbr ? " FSBR" : "")); out += sprintf(out, " Actlen=%d%s", urbp->urb->actual_length, (urbp->qh->type == USB_ENDPOINT_XFER_CONTROL ? "-8" : "")); if (urbp->urb->unlinked) out += sprintf(out, " Unlinked=%d", urbp->urb->unlinked); out += sprintf(out, "\n"); if (out - buf > len) goto done; i = nactive = ninactive = 0; list_for_each_entry(td, &urbp->td_list, list) { if (urbp->qh->type != USB_ENDPOINT_XFER_ISOC && (++i <= 10 || debug > 2)) { out += sprintf(out, "%*s%d: ", space + 2, "", i); out += uhci_show_td(uhci, td, out, len - (out - buf), 0); if (out - buf > len) goto tail; } else { if (td_status(uhci, td) & TD_CTRL_ACTIVE) ++nactive; else ++ninactive; } } if (nactive + ninactive > 0) out += sprintf(out, "%*s[skipped %d inactive and %d active TDs]\n", space, "", ninactive, nactive); done: if (out - buf > len) out += sprintf(out, " ...\n"); tail: return out - buf; } static int uhci_show_qh(struct uhci_hcd *uhci, struct uhci_qh *qh, char *buf, int len, int space) { char *out = buf; int i, nurbs; __hc32 element = qh_element(qh); char *qtype; switch (qh->type) { case USB_ENDPOINT_XFER_ISOC: qtype = "ISO"; break; case USB_ENDPOINT_XFER_INT: qtype = "INT"; break; case USB_ENDPOINT_XFER_BULK: qtype = "BLK"; break; case USB_ENDPOINT_XFER_CONTROL: qtype = "CTL"; break; default: qtype = "Skel" ; break; } out += sprintf(out, "%*s[%p] %s QH link (%08x) element (%08x)\n", space, "", qh, qtype, hc32_to_cpu(uhci, qh->link), hc32_to_cpu(uhci, element)); if (qh->type == USB_ENDPOINT_XFER_ISOC) out += sprintf(out, "%*s period %d phase %d load %d us, frame %x desc [%p]\n", space, "", qh->period, qh->phase, qh->load, qh->iso_frame, qh->iso_packet_desc); else if (qh->type == USB_ENDPOINT_XFER_INT) out += sprintf(out, "%*s period %d phase %d load %d us\n", space, "", qh->period, qh->phase, qh->load); if (out - buf > len) goto done; if (element & UHCI_PTR_QH(uhci)) out += sprintf(out, "%*s Element points to QH (bug?)\n", space, ""); if (element & UHCI_PTR_DEPTH(uhci)) out += sprintf(out, "%*s Depth traverse\n", space, ""); if (element & cpu_to_hc32(uhci, 8)) out += sprintf(out, "%*s Bit 3 set (bug?)\n", space, ""); if (!(element & ~(UHCI_PTR_QH(uhci) | UHCI_PTR_DEPTH(uhci)))) out += sprintf(out, "%*s Element is NULL (bug?)\n", space, ""); if (out - buf > len) goto done; if (list_empty(&qh->queue)) { out += sprintf(out, "%*s queue is empty\n", space, ""); if (qh == uhci->skel_async_qh) { out += uhci_show_td(uhci, uhci->term_td, out, len - (out - buf), 0); if (out - buf > len) goto tail; } } else { struct urb_priv *urbp = list_entry(qh->queue.next, struct urb_priv, node); struct uhci_td *td = list_entry(urbp->td_list.next, struct uhci_td, list); if (element != LINK_TO_TD(uhci, td)) out += sprintf(out, "%*s Element != First TD\n", space, ""); i = nurbs = 0; list_for_each_entry(urbp, &qh->queue, node) { if (++i <= 10) { out += uhci_show_urbp(uhci, urbp, out, len - (out - buf), space + 2); if (out - buf > len) goto tail; } else ++nurbs; } if (nurbs > 0) out += sprintf(out, "%*s Skipped %d URBs\n", space, "", nurbs); } if (out - buf > len) goto done; if (qh->dummy_td) { out += sprintf(out, "%*s Dummy TD\n", space, ""); out += uhci_show_td(uhci, qh->dummy_td, out, len - (out - buf), 0); if (out - buf > len) goto tail; } done: if (out - buf > len) out += sprintf(out, " ...\n"); tail: return out - buf; } static int uhci_show_sc(int port, unsigned short status, char *buf) { return sprintf(buf, " stat%d = %04x %s%s%s%s%s%s%s%s%s%s\n", port, status, (status & USBPORTSC_SUSP) ? " Suspend" : "", (status & USBPORTSC_OCC) ? " OverCurrentChange" : "", (status & USBPORTSC_OC) ? " OverCurrent" : "", (status & USBPORTSC_PR) ? " Reset" : "", (status & USBPORTSC_LSDA) ? " LowSpeed" : "", (status & USBPORTSC_RD) ? " ResumeDetect" : "", (status & USBPORTSC_PEC) ? " EnableChange" : "", (status & USBPORTSC_PE) ? " Enabled" : "", (status & USBPORTSC_CSC) ? " ConnectChange" : "", (status & USBPORTSC_CCS) ? " Connected" : ""); } static int uhci_show_root_hub_state(struct uhci_hcd *uhci, char *buf) { char *rh_state; switch (uhci->rh_state) { case UHCI_RH_RESET: rh_state = "reset"; break; case UHCI_RH_SUSPENDED: rh_state = "suspended"; break; case UHCI_RH_AUTO_STOPPED: rh_state = "auto-stopped"; break; case UHCI_RH_RESUMING: rh_state = "resuming"; break; case UHCI_RH_SUSPENDING: rh_state = "suspending"; break; case UHCI_RH_RUNNING: rh_state = "running"; break; case UHCI_RH_RUNNING_NODEVS: rh_state = "running, no devs"; break; default: rh_state = "?"; break; } return sprintf(buf, "Root-hub state: %s FSBR: %d\n", rh_state, uhci->fsbr_is_on); } static int uhci_show_status(struct uhci_hcd *uhci, char *buf, int len) { char *out = buf; unsigned short usbcmd, usbstat, usbint, usbfrnum; unsigned int flbaseadd; unsigned char sof; unsigned short portsc1, portsc2; usbcmd = uhci_readw(uhci, USBCMD); usbstat = uhci_readw(uhci, USBSTS); usbint = uhci_readw(uhci, USBINTR); usbfrnum = uhci_readw(uhci, USBFRNUM); flbaseadd = uhci_readl(uhci, USBFLBASEADD); sof = uhci_readb(uhci, USBSOF); portsc1 = uhci_readw(uhci, USBPORTSC1); portsc2 = uhci_readw(uhci, USBPORTSC2); out += sprintf(out, " usbcmd = %04x %s%s%s%s%s%s%s%s\n", usbcmd, (usbcmd & USBCMD_MAXP) ? "Maxp64 " : "Maxp32 ", (usbcmd & USBCMD_CF) ? "CF " : "", (usbcmd & USBCMD_SWDBG) ? "SWDBG " : "", (usbcmd & USBCMD_FGR) ? "FGR " : "", (usbcmd & USBCMD_EGSM) ? "EGSM " : "", (usbcmd & USBCMD_GRESET) ? "GRESET " : "", (usbcmd & USBCMD_HCRESET) ? "HCRESET " : "", (usbcmd & USBCMD_RS) ? "RS " : ""); if (out - buf > len) goto done; out += sprintf(out, " usbstat = %04x %s%s%s%s%s%s\n", usbstat, (usbstat & USBSTS_HCH) ? "HCHalted " : "", (usbstat & USBSTS_HCPE) ? "HostControllerProcessError " : "", (usbstat & USBSTS_HSE) ? "HostSystemError " : "", (usbstat & USBSTS_RD) ? "ResumeDetect " : "", (usbstat & USBSTS_ERROR) ? "USBError " : "", (usbstat & USBSTS_USBINT) ? "USBINT " : ""); if (out - buf > len) goto done; out += sprintf(out, " usbint = %04x\n", usbint); out += sprintf(out, " usbfrnum = (%d)%03x\n", (usbfrnum >> 10) & 1, 0xfff & (4*(unsigned int)usbfrnum)); out += sprintf(out, " flbaseadd = %08x\n", flbaseadd); out += sprintf(out, " sof = %02x\n", sof); if (out - buf > len) goto done; out += uhci_show_sc(1, portsc1, out); if (out - buf > len) goto done; out += uhci_show_sc(2, portsc2, out); if (out - buf > len) goto done; out += sprintf(out, "Most recent frame: %x (%d) Last ISO frame: %x (%d)\n", uhci->frame_number, uhci->frame_number & 1023, uhci->last_iso_frame, uhci->last_iso_frame & 1023); done: if (out - buf > len) out += sprintf(out, " ...\n"); return out - buf; } static int uhci_sprint_schedule(struct uhci_hcd *uhci, char *buf, int len) { char *out = buf; int i, j; struct uhci_qh *qh; struct uhci_td *td; struct list_head *tmp, *head; int nframes, nerrs; __hc32 link; __hc32 fsbr_link; static const char * const qh_names[] = { "unlink", "iso", "int128", "int64", "int32", "int16", "int8", "int4", "int2", "async", "term" }; out += uhci_show_root_hub_state(uhci, out); if (out - buf > len) goto done; out += sprintf(out, "HC status\n"); out += uhci_show_status(uhci, out, len - (out - buf)); if (out - buf > len) goto tail; out += sprintf(out, "Periodic load table\n"); for (i = 0; i < MAX_PHASE; ++i) { out += sprintf(out, "\t%d", uhci->load[i]); if (i % 8 == 7) *out++ = '\n'; } out += sprintf(out, "Total: %d, #INT: %d, #ISO: %d\n", uhci->total_load, uhci_to_hcd(uhci)->self.bandwidth_int_reqs, uhci_to_hcd(uhci)->self.bandwidth_isoc_reqs); if (debug <= 1) goto tail; out += sprintf(out, "Frame List\n"); nframes = 10; nerrs = 0; for (i = 0; i < UHCI_NUMFRAMES; ++i) { __hc32 qh_dma; if (out - buf > len) goto done; j = 0; td = uhci->frame_cpu[i]; link = uhci->frame[i]; if (!td) goto check_link; if (nframes > 0) { out += sprintf(out, "- Frame %d -> (%08x)\n", i, hc32_to_cpu(uhci, link)); j = 1; } head = &td->fl_list; tmp = head; do { td = list_entry(tmp, struct uhci_td, fl_list); tmp = tmp->next; if (link != LINK_TO_TD(uhci, td)) { if (nframes > 0) { out += sprintf(out, " link does not match list entry!\n"); if (out - buf > len) goto done; } else ++nerrs; } if (nframes > 0) { out += uhci_show_td(uhci, td, out, len - (out - buf), 4); if (out - buf > len) goto tail; } link = td->link; } while (tmp != head); check_link: qh_dma = uhci_frame_skel_link(uhci, i); if (link != qh_dma) { if (nframes > 0) { if (!j) { out += sprintf(out, "- Frame %d -> (%08x)\n", i, hc32_to_cpu(uhci, link)); j = 1; } out += sprintf(out, " link does not match QH (%08x)!\n", hc32_to_cpu(uhci, qh_dma)); if (out - buf > len) goto done; } else ++nerrs; } nframes -= j; } if (nerrs > 0) out += sprintf(out, "Skipped %d bad links\n", nerrs); out += sprintf(out, "Skeleton QHs\n"); if (out - buf > len) goto done; fsbr_link = 0; for (i = 0; i < UHCI_NUM_SKELQH; ++i) { int cnt = 0; qh = uhci->skelqh[i]; out += sprintf(out, "- skel_%s_qh\n", qh_names[i]); out += uhci_show_qh(uhci, qh, out, len - (out - buf), 4); if (out - buf > len) goto tail; /* Last QH is the Terminating QH, it's different */ if (i == SKEL_TERM) { if (qh_element(qh) != LINK_TO_TD(uhci, uhci->term_td)) { out += sprintf(out, " skel_term_qh element is not set to term_td!\n"); if (out - buf > len) goto done; } link = fsbr_link;