11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * UHCI-specific debugging code. Invaluable when something 31da177e4SLinus Torvalds * goes wrong, but don't get in my face. 41da177e4SLinus Torvalds * 5687f5f34SAlan Stern * Kernel visible pointers are surrounded in []s and bus 6687f5f34SAlan Stern * visible pointers are surrounded in ()s 71da177e4SLinus Torvalds * 81da177e4SLinus Torvalds * (C) Copyright 1999 Linus Torvalds 91da177e4SLinus Torvalds * (C) Copyright 1999-2001 Johannes Erdfelt 101da177e4SLinus Torvalds */ 111da177e4SLinus Torvalds 121da177e4SLinus Torvalds #include <linux/config.h> 131da177e4SLinus Torvalds #include <linux/kernel.h> 141da177e4SLinus Torvalds #include <linux/debugfs.h> 151da177e4SLinus Torvalds #include <linux/smp_lock.h> 161da177e4SLinus Torvalds #include <asm/io.h> 171da177e4SLinus Torvalds 181da177e4SLinus Torvalds #include "uhci-hcd.h" 191da177e4SLinus Torvalds 208d402e1aSAlan Stern #define uhci_debug_operations (* (struct file_operations *) NULL) 218d402e1aSAlan Stern static struct dentry *uhci_debugfs_root; 228d402e1aSAlan Stern 238d402e1aSAlan Stern #ifdef DEBUG 241da177e4SLinus Torvalds 25687f5f34SAlan Stern /* Handle REALLY large printks so we don't overflow buffers */ 268d402e1aSAlan Stern static void lprintk(char *buf) 271da177e4SLinus Torvalds { 281da177e4SLinus Torvalds char *p; 291da177e4SLinus Torvalds 301da177e4SLinus Torvalds /* Just write one line at a time */ 311da177e4SLinus Torvalds while (buf) { 321da177e4SLinus Torvalds p = strchr(buf, '\n'); 331da177e4SLinus Torvalds if (p) 341da177e4SLinus Torvalds *p = 0; 351da177e4SLinus Torvalds printk(KERN_DEBUG "%s\n", buf); 361da177e4SLinus Torvalds buf = p; 371da177e4SLinus Torvalds if (buf) 381da177e4SLinus Torvalds buf++; 391da177e4SLinus Torvalds } 401da177e4SLinus Torvalds } 411da177e4SLinus Torvalds 421da177e4SLinus Torvalds static int uhci_show_td(struct uhci_td *td, char *buf, int len, int space) 431da177e4SLinus Torvalds { 441da177e4SLinus Torvalds char *out = buf; 451da177e4SLinus Torvalds char *spid; 461da177e4SLinus Torvalds u32 status, token; 471da177e4SLinus Torvalds 481da177e4SLinus Torvalds /* Try to make sure there's enough memory */ 491da177e4SLinus Torvalds if (len < 160) 501da177e4SLinus Torvalds return 0; 511da177e4SLinus Torvalds 521da177e4SLinus Torvalds status = td_status(td); 531da177e4SLinus Torvalds out += sprintf(out, "%*s[%p] link (%08x) ", space, "", td, le32_to_cpu(td->link)); 541da177e4SLinus Torvalds out += sprintf(out, "e%d %s%s%s%s%s%s%s%s%s%sLength=%x ", 551da177e4SLinus Torvalds ((status >> 27) & 3), 561da177e4SLinus Torvalds (status & TD_CTRL_SPD) ? "SPD " : "", 571da177e4SLinus Torvalds (status & TD_CTRL_LS) ? "LS " : "", 581da177e4SLinus Torvalds (status & TD_CTRL_IOC) ? "IOC " : "", 591da177e4SLinus Torvalds (status & TD_CTRL_ACTIVE) ? "Active " : "", 601da177e4SLinus Torvalds (status & TD_CTRL_STALLED) ? "Stalled " : "", 611da177e4SLinus Torvalds (status & TD_CTRL_DBUFERR) ? "DataBufErr " : "", 621da177e4SLinus Torvalds (status & TD_CTRL_BABBLE) ? "Babble " : "", 631da177e4SLinus Torvalds (status & TD_CTRL_NAK) ? "NAK " : "", 641da177e4SLinus Torvalds (status & TD_CTRL_CRCTIMEO) ? "CRC/Timeo " : "", 651da177e4SLinus Torvalds (status & TD_CTRL_BITSTUFF) ? "BitStuff " : "", 661da177e4SLinus Torvalds status & 0x7ff); 671da177e4SLinus Torvalds 681da177e4SLinus Torvalds token = td_token(td); 691da177e4SLinus Torvalds switch (uhci_packetid(token)) { 701da177e4SLinus Torvalds case USB_PID_SETUP: 711da177e4SLinus Torvalds spid = "SETUP"; 721da177e4SLinus Torvalds break; 731da177e4SLinus Torvalds case USB_PID_OUT: 741da177e4SLinus Torvalds spid = "OUT"; 751da177e4SLinus Torvalds break; 761da177e4SLinus Torvalds case USB_PID_IN: 771da177e4SLinus Torvalds spid = "IN"; 781da177e4SLinus Torvalds break; 791da177e4SLinus Torvalds default: 801da177e4SLinus Torvalds spid = "?"; 811da177e4SLinus Torvalds break; 821da177e4SLinus Torvalds } 831da177e4SLinus Torvalds 841da177e4SLinus Torvalds out += sprintf(out, "MaxLen=%x DT%d EndPt=%x Dev=%x, PID=%x(%s) ", 851da177e4SLinus Torvalds token >> 21, 861da177e4SLinus Torvalds ((token >> 19) & 1), 871da177e4SLinus Torvalds (token >> 15) & 15, 881da177e4SLinus Torvalds (token >> 8) & 127, 891da177e4SLinus Torvalds (token & 0xff), 901da177e4SLinus Torvalds spid); 911da177e4SLinus Torvalds out += sprintf(out, "(buf=%08x)\n", le32_to_cpu(td->buffer)); 921da177e4SLinus Torvalds 931da177e4SLinus Torvalds return out - buf; 941da177e4SLinus Torvalds } 951da177e4SLinus Torvalds 96dccf4a48SAlan Stern static int uhci_show_urbp(struct urb_priv *urbp, char *buf, int len, int space) 97dccf4a48SAlan Stern { 98dccf4a48SAlan Stern char *out = buf; 99dccf4a48SAlan Stern struct uhci_td *td; 100dccf4a48SAlan Stern int i, nactive, ninactive; 1014de7d2c2SAlan Stern char *ptype; 102dccf4a48SAlan Stern 103dccf4a48SAlan Stern if (len < 200) 104dccf4a48SAlan Stern return 0; 105dccf4a48SAlan Stern 106dccf4a48SAlan Stern out += sprintf(out, "urb_priv [%p] ", urbp); 107dccf4a48SAlan Stern out += sprintf(out, "urb [%p] ", urbp->urb); 108dccf4a48SAlan Stern out += sprintf(out, "qh [%p] ", urbp->qh); 109dccf4a48SAlan Stern out += sprintf(out, "Dev=%d ", usb_pipedevice(urbp->urb->pipe)); 110dccf4a48SAlan Stern out += sprintf(out, "EP=%x(%s) ", usb_pipeendpoint(urbp->urb->pipe), 111dccf4a48SAlan Stern (usb_pipein(urbp->urb->pipe) ? "IN" : "OUT")); 112dccf4a48SAlan Stern 113dccf4a48SAlan Stern switch (usb_pipetype(urbp->urb->pipe)) { 1144de7d2c2SAlan Stern case PIPE_ISOCHRONOUS: ptype = "ISO"; break; 1154de7d2c2SAlan Stern case PIPE_INTERRUPT: ptype = "INT"; break; 1164de7d2c2SAlan Stern case PIPE_BULK: ptype = "BLK"; break; 1174de7d2c2SAlan Stern default: 1184de7d2c2SAlan Stern case PIPE_CONTROL: ptype = "CTL"; break; 119dccf4a48SAlan Stern } 120dccf4a48SAlan Stern 1214de7d2c2SAlan Stern out += sprintf(out, "%s%s", ptype, (urbp->fsbr ? " FSBR" : "")); 12259e29ed9SAlan Stern out += sprintf(out, " Actlen=%d", urbp->urb->actual_length); 123dccf4a48SAlan Stern 124dccf4a48SAlan Stern if (urbp->urb->status != -EINPROGRESS) 125dccf4a48SAlan Stern out += sprintf(out, " Status=%d", urbp->urb->status); 126dccf4a48SAlan Stern out += sprintf(out, "\n"); 127dccf4a48SAlan Stern 128dccf4a48SAlan Stern i = nactive = ninactive = 0; 129dccf4a48SAlan Stern list_for_each_entry(td, &urbp->td_list, list) { 130dccf4a48SAlan Stern if (++i <= 10 || debug > 2) { 131dccf4a48SAlan Stern out += sprintf(out, "%*s%d: ", space + 2, "", i); 132dccf4a48SAlan Stern out += uhci_show_td(td, out, len - (out - buf), 0); 133dccf4a48SAlan Stern } else { 134dccf4a48SAlan Stern if (td_status(td) & TD_CTRL_ACTIVE) 135dccf4a48SAlan Stern ++nactive; 136dccf4a48SAlan Stern else 137dccf4a48SAlan Stern ++ninactive; 138dccf4a48SAlan Stern } 139dccf4a48SAlan Stern } 140dccf4a48SAlan Stern if (nactive + ninactive > 0) 141dccf4a48SAlan Stern out += sprintf(out, "%*s[skipped %d inactive and %d active " 142dccf4a48SAlan Stern "TDs]\n", 143dccf4a48SAlan Stern space, "", ninactive, nactive); 144dccf4a48SAlan Stern 145dccf4a48SAlan Stern return out - buf; 146dccf4a48SAlan Stern } 147dccf4a48SAlan Stern 1481da177e4SLinus Torvalds static int uhci_show_qh(struct uhci_qh *qh, char *buf, int len, int space) 1491da177e4SLinus Torvalds { 1501da177e4SLinus Torvalds char *out = buf; 151dccf4a48SAlan Stern int i, nurbs; 1521da177e4SLinus Torvalds __le32 element = qh_element(qh); 1534de7d2c2SAlan Stern char *qtype; 1541da177e4SLinus Torvalds 1551da177e4SLinus Torvalds /* Try to make sure there's enough memory */ 1561da177e4SLinus Torvalds if (len < 80 * 6) 1571da177e4SLinus Torvalds return 0; 1581da177e4SLinus Torvalds 1594de7d2c2SAlan Stern switch (qh->type) { 1604de7d2c2SAlan Stern case USB_ENDPOINT_XFER_ISOC: qtype = "ISO"; break; 1614de7d2c2SAlan Stern case USB_ENDPOINT_XFER_INT: qtype = "INT"; break; 1624de7d2c2SAlan Stern case USB_ENDPOINT_XFER_BULK: qtype = "BLK"; break; 1634de7d2c2SAlan Stern case USB_ENDPOINT_XFER_CONTROL: qtype = "CTL"; break; 1644de7d2c2SAlan Stern default: qtype = "Skel" ; break; 1654de7d2c2SAlan Stern } 1664de7d2c2SAlan Stern 1674de7d2c2SAlan Stern out += sprintf(out, "%*s[%p] %s QH link (%08x) element (%08x)\n", 1684de7d2c2SAlan Stern space, "", qh, qtype, 1694de7d2c2SAlan Stern le32_to_cpu(qh->link), le32_to_cpu(element)); 1701da177e4SLinus Torvalds 1711da177e4SLinus Torvalds if (element & UHCI_PTR_QH) 1721da177e4SLinus Torvalds out += sprintf(out, "%*s Element points to QH (bug?)\n", space, ""); 1731da177e4SLinus Torvalds 1741da177e4SLinus Torvalds if (element & UHCI_PTR_DEPTH) 1751da177e4SLinus Torvalds out += sprintf(out, "%*s Depth traverse\n", space, ""); 1761da177e4SLinus Torvalds 1771da177e4SLinus Torvalds if (element & cpu_to_le32(8)) 1781da177e4SLinus Torvalds out += sprintf(out, "%*s Bit 3 set (bug?)\n", space, ""); 1791da177e4SLinus Torvalds 1801da177e4SLinus Torvalds if (!(element & ~(UHCI_PTR_QH | UHCI_PTR_DEPTH))) 1811da177e4SLinus Torvalds out += sprintf(out, "%*s Element is NULL (bug?)\n", space, ""); 1821da177e4SLinus Torvalds 183dccf4a48SAlan Stern if (list_empty(&qh->queue)) { 184dccf4a48SAlan Stern out += sprintf(out, "%*s queue is empty\n", space, ""); 185dccf4a48SAlan Stern } else { 186dccf4a48SAlan Stern struct urb_priv *urbp = list_entry(qh->queue.next, 187dccf4a48SAlan Stern struct urb_priv, node); 188dccf4a48SAlan Stern struct uhci_td *td = list_entry(urbp->td_list.next, 189dccf4a48SAlan Stern struct uhci_td, list); 1901da177e4SLinus Torvalds 1911da177e4SLinus Torvalds if (cpu_to_le32(td->dma_handle) != (element & ~UHCI_PTR_BITS)) 192dccf4a48SAlan Stern out += sprintf(out, "%*s Element != First TD\n", 193dccf4a48SAlan Stern space, ""); 194dccf4a48SAlan Stern i = nurbs = 0; 195dccf4a48SAlan Stern list_for_each_entry(urbp, &qh->queue, node) { 196dccf4a48SAlan Stern if (++i <= 10) 197dccf4a48SAlan Stern out += uhci_show_urbp(urbp, out, 198dccf4a48SAlan Stern len - (out - buf), space + 2); 199dccf4a48SAlan Stern else 200dccf4a48SAlan Stern ++nurbs; 201dccf4a48SAlan Stern } 202dccf4a48SAlan Stern if (nurbs > 0) 203dccf4a48SAlan Stern out += sprintf(out, "%*s Skipped %d URBs\n", 204dccf4a48SAlan Stern space, "", nurbs); 2051da177e4SLinus Torvalds } 2061da177e4SLinus Torvalds 207af0bb599SAlan Stern if (qh->udev) { 208af0bb599SAlan Stern out += sprintf(out, "%*s Dummy TD\n", space, ""); 209af0bb599SAlan Stern out += uhci_show_td(qh->dummy_td, out, len - (out - buf), 0); 210af0bb599SAlan Stern } 211af0bb599SAlan Stern 2121da177e4SLinus Torvalds return out - buf; 2131da177e4SLinus Torvalds } 2141da177e4SLinus Torvalds 2154c4c9432SArjan van de Ven static const char * const qh_names[] = { 216dccf4a48SAlan Stern "skel_unlink_qh", "skel_iso_qh", 2171da177e4SLinus Torvalds "skel_int128_qh", "skel_int64_qh", 2181da177e4SLinus Torvalds "skel_int32_qh", "skel_int16_qh", 2191da177e4SLinus Torvalds "skel_int8_qh", "skel_int4_qh", 2201da177e4SLinus Torvalds "skel_int2_qh", "skel_int1_qh", 2211da177e4SLinus Torvalds "skel_ls_control_qh", "skel_fs_control_qh", 2221da177e4SLinus Torvalds "skel_bulk_qh", "skel_term_qh" 2231da177e4SLinus Torvalds }; 2241da177e4SLinus Torvalds 2251da177e4SLinus Torvalds static int uhci_show_sc(int port, unsigned short status, char *buf, int len) 2261da177e4SLinus Torvalds { 2271da177e4SLinus Torvalds char *out = buf; 2281da177e4SLinus Torvalds 2291da177e4SLinus Torvalds /* Try to make sure there's enough memory */ 2301da177e4SLinus Torvalds if (len < 160) 2311da177e4SLinus Torvalds return 0; 2321da177e4SLinus Torvalds 2331da177e4SLinus Torvalds out += sprintf(out, " stat%d = %04x %s%s%s%s%s%s%s%s%s%s\n", 2341da177e4SLinus Torvalds port, 2351da177e4SLinus Torvalds status, 2361da177e4SLinus Torvalds (status & USBPORTSC_SUSP) ? " Suspend" : "", 2371da177e4SLinus Torvalds (status & USBPORTSC_OCC) ? " OverCurrentChange" : "", 2381da177e4SLinus Torvalds (status & USBPORTSC_OC) ? " OverCurrent" : "", 2391da177e4SLinus Torvalds (status & USBPORTSC_PR) ? " Reset" : "", 2401da177e4SLinus Torvalds (status & USBPORTSC_LSDA) ? " LowSpeed" : "", 2411da177e4SLinus Torvalds (status & USBPORTSC_RD) ? " ResumeDetect" : "", 2421da177e4SLinus Torvalds (status & USBPORTSC_PEC) ? " EnableChange" : "", 2431da177e4SLinus Torvalds (status & USBPORTSC_PE) ? " Enabled" : "", 2441da177e4SLinus Torvalds (status & USBPORTSC_CSC) ? " ConnectChange" : "", 2451da177e4SLinus Torvalds (status & USBPORTSC_CCS) ? " Connected" : ""); 2461da177e4SLinus Torvalds 2471da177e4SLinus Torvalds return out - buf; 2481da177e4SLinus Torvalds } 2491da177e4SLinus Torvalds 250c8f4fe43SAlan Stern static int uhci_show_root_hub_state(struct uhci_hcd *uhci, char *buf, int len) 251c8f4fe43SAlan Stern { 252c8f4fe43SAlan Stern char *out = buf; 253c8f4fe43SAlan Stern char *rh_state; 254c8f4fe43SAlan Stern 255c8f4fe43SAlan Stern /* Try to make sure there's enough memory */ 256c8f4fe43SAlan Stern if (len < 60) 257c8f4fe43SAlan Stern return 0; 258c8f4fe43SAlan Stern 259c8f4fe43SAlan Stern switch (uhci->rh_state) { 260c8f4fe43SAlan Stern case UHCI_RH_RESET: 261c8f4fe43SAlan Stern rh_state = "reset"; break; 262c8f4fe43SAlan Stern case UHCI_RH_SUSPENDED: 263c8f4fe43SAlan Stern rh_state = "suspended"; break; 264c8f4fe43SAlan Stern case UHCI_RH_AUTO_STOPPED: 265c8f4fe43SAlan Stern rh_state = "auto-stopped"; break; 266c8f4fe43SAlan Stern case UHCI_RH_RESUMING: 267c8f4fe43SAlan Stern rh_state = "resuming"; break; 268c8f4fe43SAlan Stern case UHCI_RH_SUSPENDING: 269c8f4fe43SAlan Stern rh_state = "suspending"; break; 270c8f4fe43SAlan Stern case UHCI_RH_RUNNING: 271c8f4fe43SAlan Stern rh_state = "running"; break; 272c8f4fe43SAlan Stern case UHCI_RH_RUNNING_NODEVS: 273c8f4fe43SAlan Stern rh_state = "running, no devs"; break; 274c8f4fe43SAlan Stern default: 275c8f4fe43SAlan Stern rh_state = "?"; break; 276c8f4fe43SAlan Stern } 27784afddd7SAlan Stern out += sprintf(out, "Root-hub state: %s FSBR: %d\n", 27884afddd7SAlan Stern rh_state, uhci->fsbr_is_on); 279c8f4fe43SAlan Stern return out - buf; 280c8f4fe43SAlan Stern } 281c8f4fe43SAlan Stern 2821da177e4SLinus Torvalds static int uhci_show_status(struct uhci_hcd *uhci, char *buf, int len) 2831da177e4SLinus Torvalds { 2841da177e4SLinus Torvalds char *out = buf; 2851da177e4SLinus Torvalds unsigned long io_addr = uhci->io_addr; 2861da177e4SLinus Torvalds unsigned short usbcmd, usbstat, usbint, usbfrnum; 2871da177e4SLinus Torvalds unsigned int flbaseadd; 2881da177e4SLinus Torvalds unsigned char sof; 2891da177e4SLinus Torvalds unsigned short portsc1, portsc2; 2901da177e4SLinus Torvalds 2911da177e4SLinus Torvalds /* Try to make sure there's enough memory */ 292c4334726SAlan Stern if (len < 80 * 9) 2931da177e4SLinus Torvalds return 0; 2941da177e4SLinus Torvalds 2951da177e4SLinus Torvalds usbcmd = inw(io_addr + 0); 2961da177e4SLinus Torvalds usbstat = inw(io_addr + 2); 2971da177e4SLinus Torvalds usbint = inw(io_addr + 4); 2981da177e4SLinus Torvalds usbfrnum = inw(io_addr + 6); 2991da177e4SLinus Torvalds flbaseadd = inl(io_addr + 8); 3001da177e4SLinus Torvalds sof = inb(io_addr + 12); 3011da177e4SLinus Torvalds portsc1 = inw(io_addr + 16); 3021da177e4SLinus Torvalds portsc2 = inw(io_addr + 18); 3031da177e4SLinus Torvalds 3041da177e4SLinus Torvalds out += sprintf(out, " usbcmd = %04x %s%s%s%s%s%s%s%s\n", 3051da177e4SLinus Torvalds usbcmd, 3061da177e4SLinus Torvalds (usbcmd & USBCMD_MAXP) ? "Maxp64 " : "Maxp32 ", 3071da177e4SLinus Torvalds (usbcmd & USBCMD_CF) ? "CF " : "", 3081da177e4SLinus Torvalds (usbcmd & USBCMD_SWDBG) ? "SWDBG " : "", 3091da177e4SLinus Torvalds (usbcmd & USBCMD_FGR) ? "FGR " : "", 3101da177e4SLinus Torvalds (usbcmd & USBCMD_EGSM) ? "EGSM " : "", 3111da177e4SLinus Torvalds (usbcmd & USBCMD_GRESET) ? "GRESET " : "", 3121da177e4SLinus Torvalds (usbcmd & USBCMD_HCRESET) ? "HCRESET " : "", 3131da177e4SLinus Torvalds (usbcmd & USBCMD_RS) ? "RS " : ""); 3141da177e4SLinus Torvalds 3151da177e4SLinus Torvalds out += sprintf(out, " usbstat = %04x %s%s%s%s%s%s\n", 3161da177e4SLinus Torvalds usbstat, 3171da177e4SLinus Torvalds (usbstat & USBSTS_HCH) ? "HCHalted " : "", 3181da177e4SLinus Torvalds (usbstat & USBSTS_HCPE) ? "HostControllerProcessError " : "", 3191da177e4SLinus Torvalds (usbstat & USBSTS_HSE) ? "HostSystemError " : "", 3201da177e4SLinus Torvalds (usbstat & USBSTS_RD) ? "ResumeDetect " : "", 3211da177e4SLinus Torvalds (usbstat & USBSTS_ERROR) ? "USBError " : "", 3221da177e4SLinus Torvalds (usbstat & USBSTS_USBINT) ? "USBINT " : ""); 3231da177e4SLinus Torvalds 3241da177e4SLinus Torvalds out += sprintf(out, " usbint = %04x\n", usbint); 3251da177e4SLinus Torvalds out += sprintf(out, " usbfrnum = (%d)%03x\n", (usbfrnum >> 10) & 1, 3261da177e4SLinus Torvalds 0xfff & (4*(unsigned int)usbfrnum)); 3271da177e4SLinus Torvalds out += sprintf(out, " flbaseadd = %08x\n", flbaseadd); 3281da177e4SLinus Torvalds out += sprintf(out, " sof = %02x\n", sof); 3291da177e4SLinus Torvalds out += uhci_show_sc(1, portsc1, out, len - (out - buf)); 3301da177e4SLinus Torvalds out += uhci_show_sc(2, portsc2, out, len - (out - buf)); 331c4334726SAlan Stern out += sprintf(out, "Most recent frame: %x\n", 332c4334726SAlan Stern uhci->frame_number); 3331da177e4SLinus Torvalds 3341da177e4SLinus Torvalds return out - buf; 3351da177e4SLinus Torvalds } 3361da177e4SLinus Torvalds 3371da177e4SLinus Torvalds static int uhci_sprint_schedule(struct uhci_hcd *uhci, char *buf, int len) 3381da177e4SLinus Torvalds { 3391da177e4SLinus Torvalds char *out = buf; 3401da177e4SLinus Torvalds int i, j; 3411da177e4SLinus Torvalds struct uhci_qh *qh; 3421da177e4SLinus Torvalds struct uhci_td *td; 3431da177e4SLinus Torvalds struct list_head *tmp, *head; 3441da177e4SLinus Torvalds 345c8f4fe43SAlan Stern out += uhci_show_root_hub_state(uhci, out, len - (out - buf)); 3461da177e4SLinus Torvalds out += sprintf(out, "HC status\n"); 3471da177e4SLinus Torvalds out += uhci_show_status(uhci, out, len - (out - buf)); 348dccf4a48SAlan Stern if (debug <= 1) 349dccf4a48SAlan Stern return out - buf; 3501da177e4SLinus Torvalds 3511da177e4SLinus Torvalds out += sprintf(out, "Frame List\n"); 3521da177e4SLinus Torvalds for (i = 0; i < UHCI_NUMFRAMES; ++i) { 353a1d59ce8SAlan Stern td = uhci->frame_cpu[i]; 3541da177e4SLinus Torvalds if (!td) 3551da177e4SLinus Torvalds continue; 3561da177e4SLinus Torvalds 357dccf4a48SAlan Stern out += sprintf(out, "- Frame %d\n", i); \ 358dccf4a48SAlan Stern if (td->dma_handle != (dma_addr_t)uhci->frame[i]) 3591da177e4SLinus Torvalds out += sprintf(out, " frame list does not match td->dma_handle!\n"); 3601da177e4SLinus Torvalds 3611da177e4SLinus Torvalds head = &td->fl_list; 3621da177e4SLinus Torvalds tmp = head; 3631da177e4SLinus Torvalds do { 3641da177e4SLinus Torvalds td = list_entry(tmp, struct uhci_td, fl_list); 3651da177e4SLinus Torvalds tmp = tmp->next; 3661da177e4SLinus Torvalds out += uhci_show_td(td, out, len - (out - buf), 4); 3671da177e4SLinus Torvalds } while (tmp != head); 3681da177e4SLinus Torvalds } 3691da177e4SLinus Torvalds 370687f5f34SAlan Stern out += sprintf(out, "Skeleton QHs\n"); 3711da177e4SLinus Torvalds 3721da177e4SLinus Torvalds for (i = 0; i < UHCI_NUM_SKELQH; ++i) { 373dccf4a48SAlan Stern int cnt = 0; 3741da177e4SLinus Torvalds 3751da177e4SLinus Torvalds qh = uhci->skelqh[i]; 376dccf4a48SAlan Stern out += sprintf(out, "- %s\n", qh_names[i]); \ 3771da177e4SLinus Torvalds out += uhci_show_qh(qh, out, len - (out - buf), 4); 3781da177e4SLinus Torvalds 3791da177e4SLinus Torvalds /* Last QH is the Terminating QH, it's different */ 3801da177e4SLinus Torvalds if (i == UHCI_NUM_SKELQH - 1) { 3811da177e4SLinus Torvalds if (qh->link != UHCI_PTR_TERM) 3821da177e4SLinus Torvalds out += sprintf(out, " bandwidth reclamation on!\n"); 3831da177e4SLinus Torvalds 3841da177e4SLinus Torvalds if (qh_element(qh) != cpu_to_le32(uhci->term_td->dma_handle)) 3851da177e4SLinus Torvalds out += sprintf(out, " skel_term_qh element is not set to term_td!\n"); 3861da177e4SLinus Torvalds 3871da177e4SLinus Torvalds continue; 3881da177e4SLinus Torvalds } 3891da177e4SLinus Torvalds 390dccf4a48SAlan Stern j = (i < 9) ? 9 : i+1; /* Next skeleton */ 391dccf4a48SAlan Stern head = &qh->node; 3921da177e4SLinus Torvalds tmp = head->next; 3931da177e4SLinus Torvalds 3941da177e4SLinus Torvalds while (tmp != head) { 395dccf4a48SAlan Stern qh = list_entry(tmp, struct uhci_qh, node); 3961da177e4SLinus Torvalds tmp = tmp->next; 397dccf4a48SAlan Stern if (++cnt <= 10) 398dccf4a48SAlan Stern out += uhci_show_qh(qh, out, 399dccf4a48SAlan Stern len - (out - buf), 4); 4001da177e4SLinus Torvalds } 401dccf4a48SAlan Stern if ((cnt -= 10) > 0) 402dccf4a48SAlan Stern out += sprintf(out, " Skipped %d QHs\n", cnt); 4031da177e4SLinus Torvalds 404dccf4a48SAlan Stern if (i > 1 && i < UHCI_NUM_SKELQH - 1) { 4051da177e4SLinus Torvalds if (qh->link != 4061da177e4SLinus Torvalds (cpu_to_le32(uhci->skelqh[j]->dma_handle) | UHCI_PTR_QH)) 4071da177e4SLinus Torvalds out += sprintf(out, " last QH not linked to next skeleton!\n"); 4081da177e4SLinus Torvalds } 4091da177e4SLinus Torvalds } 4101da177e4SLinus Torvalds 4111da177e4SLinus Torvalds return out - buf; 4121da177e4SLinus Torvalds } 4131da177e4SLinus Torvalds 4148d402e1aSAlan Stern #ifdef CONFIG_DEBUG_FS 4158d402e1aSAlan Stern 4161da177e4SLinus Torvalds #define MAX_OUTPUT (64 * 1024) 4171da177e4SLinus Torvalds 4181da177e4SLinus Torvalds struct uhci_debug { 4191da177e4SLinus Torvalds int size; 4201da177e4SLinus Torvalds char *data; 4211da177e4SLinus Torvalds }; 4221da177e4SLinus Torvalds 4231da177e4SLinus Torvalds static int uhci_debug_open(struct inode *inode, struct file *file) 4241da177e4SLinus Torvalds { 4251da177e4SLinus Torvalds struct uhci_hcd *uhci = inode->u.generic_ip; 4261da177e4SLinus Torvalds struct uhci_debug *up; 4271da177e4SLinus Torvalds int ret = -ENOMEM; 428dccf4a48SAlan Stern unsigned long flags; 4291da177e4SLinus Torvalds 4301da177e4SLinus Torvalds lock_kernel(); 4311da177e4SLinus Torvalds up = kmalloc(sizeof(*up), GFP_KERNEL); 4321da177e4SLinus Torvalds if (!up) 4331da177e4SLinus Torvalds goto out; 4341da177e4SLinus Torvalds 4351da177e4SLinus Torvalds up->data = kmalloc(MAX_OUTPUT, GFP_KERNEL); 4361da177e4SLinus Torvalds if (!up->data) { 4371da177e4SLinus Torvalds kfree(up); 4381da177e4SLinus Torvalds goto out; 4391da177e4SLinus Torvalds } 4401da177e4SLinus Torvalds 4418d402e1aSAlan Stern up->size = 0; 442dccf4a48SAlan Stern spin_lock_irqsave(&uhci->lock, flags); 4438d402e1aSAlan Stern if (uhci->is_initialized) 4441da177e4SLinus Torvalds up->size = uhci_sprint_schedule(uhci, up->data, MAX_OUTPUT); 445dccf4a48SAlan Stern spin_unlock_irqrestore(&uhci->lock, flags); 4461da177e4SLinus Torvalds 4471da177e4SLinus Torvalds file->private_data = up; 4481da177e4SLinus Torvalds 4491da177e4SLinus Torvalds ret = 0; 4501da177e4SLinus Torvalds out: 4511da177e4SLinus Torvalds unlock_kernel(); 4521da177e4SLinus Torvalds return ret; 4531da177e4SLinus Torvalds } 4541da177e4SLinus Torvalds 4551da177e4SLinus Torvalds static loff_t uhci_debug_lseek(struct file *file, loff_t off, int whence) 4561da177e4SLinus Torvalds { 4571da177e4SLinus Torvalds struct uhci_debug *up; 4581da177e4SLinus Torvalds loff_t new = -1; 4591da177e4SLinus Torvalds 4601da177e4SLinus Torvalds lock_kernel(); 4611da177e4SLinus Torvalds up = file->private_data; 4621da177e4SLinus Torvalds 4631da177e4SLinus Torvalds switch (whence) { 4641da177e4SLinus Torvalds case 0: 4651da177e4SLinus Torvalds new = off; 4661da177e4SLinus Torvalds break; 4671da177e4SLinus Torvalds case 1: 4681da177e4SLinus Torvalds new = file->f_pos + off; 4691da177e4SLinus Torvalds break; 4701da177e4SLinus Torvalds } 4711da177e4SLinus Torvalds if (new < 0 || new > up->size) { 4721da177e4SLinus Torvalds unlock_kernel(); 4731da177e4SLinus Torvalds return -EINVAL; 4741da177e4SLinus Torvalds } 4751da177e4SLinus Torvalds unlock_kernel(); 4761da177e4SLinus Torvalds return (file->f_pos = new); 4771da177e4SLinus Torvalds } 4781da177e4SLinus Torvalds 4791da177e4SLinus Torvalds static ssize_t uhci_debug_read(struct file *file, char __user *buf, 4801da177e4SLinus Torvalds size_t nbytes, loff_t *ppos) 4811da177e4SLinus Torvalds { 4821da177e4SLinus Torvalds struct uhci_debug *up = file->private_data; 4831da177e4SLinus Torvalds return simple_read_from_buffer(buf, nbytes, ppos, up->data, up->size); 4841da177e4SLinus Torvalds } 4851da177e4SLinus Torvalds 4861da177e4SLinus Torvalds static int uhci_debug_release(struct inode *inode, struct file *file) 4871da177e4SLinus Torvalds { 4881da177e4SLinus Torvalds struct uhci_debug *up = file->private_data; 4891da177e4SLinus Torvalds 4901da177e4SLinus Torvalds kfree(up->data); 4911da177e4SLinus Torvalds kfree(up); 4921da177e4SLinus Torvalds 4931da177e4SLinus Torvalds return 0; 4941da177e4SLinus Torvalds } 4951da177e4SLinus Torvalds 4968d402e1aSAlan Stern #undef uhci_debug_operations 4971da177e4SLinus Torvalds static struct file_operations uhci_debug_operations = { 4988d402e1aSAlan Stern .owner = THIS_MODULE, 4991da177e4SLinus Torvalds .open = uhci_debug_open, 5001da177e4SLinus Torvalds .llseek = uhci_debug_lseek, 5011da177e4SLinus Torvalds .read = uhci_debug_read, 5021da177e4SLinus Torvalds .release = uhci_debug_release, 5031da177e4SLinus Torvalds }; 5041da177e4SLinus Torvalds 5058d402e1aSAlan Stern #endif /* CONFIG_DEBUG_FS */ 5061da177e4SLinus Torvalds 5078d402e1aSAlan Stern #else /* DEBUG */ 5088d402e1aSAlan Stern 5098d402e1aSAlan Stern static inline void lprintk(char *buf) 5108d402e1aSAlan Stern {} 5118d402e1aSAlan Stern 5128d402e1aSAlan Stern static inline int uhci_show_qh(struct uhci_qh *qh, char *buf, 5138d402e1aSAlan Stern int len, int space) 5148d402e1aSAlan Stern { 5158d402e1aSAlan Stern return 0; 5168d402e1aSAlan Stern } 5178d402e1aSAlan Stern 5188d402e1aSAlan Stern static inline int uhci_sprint_schedule(struct uhci_hcd *uhci, 5198d402e1aSAlan Stern char *buf, int len) 5208d402e1aSAlan Stern { 5218d402e1aSAlan Stern return 0; 5228d402e1aSAlan Stern } 5231da177e4SLinus Torvalds 5241da177e4SLinus Torvalds #endif 525