Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * UHCI-specific debugging code. Invaluable when something |
| 3 | * goes wrong, but don't get in my face. |
| 4 | * |
Alan Stern | 687f5f3 | 2005-11-30 17:16:19 -0500 | [diff] [blame] | 5 | * Kernel visible pointers are surrounded in []s and bus |
| 6 | * visible pointers are surrounded in ()s |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | * |
| 8 | * (C) Copyright 1999 Linus Torvalds |
| 9 | * (C) Copyright 1999-2001 Johannes Erdfelt |
| 10 | */ |
| 11 | |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 12 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | #include <linux/kernel.h> |
| 14 | #include <linux/debugfs.h> |
| 15 | #include <linux/smp_lock.h> |
| 16 | #include <asm/io.h> |
| 17 | |
| 18 | #include "uhci-hcd.h" |
| 19 | |
Luiz Fernando N. Capitulino | 066202d | 2006-08-05 20:37:11 -0300 | [diff] [blame] | 20 | #define uhci_debug_operations (* (const struct file_operations *) NULL) |
Alan Stern | 8d402e1 | 2005-12-17 18:03:37 -0500 | [diff] [blame] | 21 | static struct dentry *uhci_debugfs_root; |
| 22 | |
| 23 | #ifdef DEBUG |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | |
Alan Stern | 687f5f3 | 2005-11-30 17:16:19 -0500 | [diff] [blame] | 25 | /* Handle REALLY large printks so we don't overflow buffers */ |
Alan Stern | 8d402e1 | 2005-12-17 18:03:37 -0500 | [diff] [blame] | 26 | static void lprintk(char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | { |
| 28 | char *p; |
| 29 | |
| 30 | /* Just write one line at a time */ |
| 31 | while (buf) { |
| 32 | p = strchr(buf, '\n'); |
| 33 | if (p) |
| 34 | *p = 0; |
| 35 | printk(KERN_DEBUG "%s\n", buf); |
| 36 | buf = p; |
| 37 | if (buf) |
| 38 | buf++; |
| 39 | } |
| 40 | } |
| 41 | |
| 42 | static int uhci_show_td(struct uhci_td *td, char *buf, int len, int space) |
| 43 | { |
| 44 | char *out = buf; |
| 45 | char *spid; |
| 46 | u32 status, token; |
| 47 | |
| 48 | /* Try to make sure there's enough memory */ |
| 49 | if (len < 160) |
| 50 | return 0; |
| 51 | |
| 52 | status = td_status(td); |
| 53 | out += sprintf(out, "%*s[%p] link (%08x) ", space, "", td, le32_to_cpu(td->link)); |
| 54 | out += sprintf(out, "e%d %s%s%s%s%s%s%s%s%s%sLength=%x ", |
| 55 | ((status >> 27) & 3), |
| 56 | (status & TD_CTRL_SPD) ? "SPD " : "", |
| 57 | (status & TD_CTRL_LS) ? "LS " : "", |
| 58 | (status & TD_CTRL_IOC) ? "IOC " : "", |
| 59 | (status & TD_CTRL_ACTIVE) ? "Active " : "", |
| 60 | (status & TD_CTRL_STALLED) ? "Stalled " : "", |
| 61 | (status & TD_CTRL_DBUFERR) ? "DataBufErr " : "", |
| 62 | (status & TD_CTRL_BABBLE) ? "Babble " : "", |
| 63 | (status & TD_CTRL_NAK) ? "NAK " : "", |
| 64 | (status & TD_CTRL_CRCTIMEO) ? "CRC/Timeo " : "", |
| 65 | (status & TD_CTRL_BITSTUFF) ? "BitStuff " : "", |
| 66 | status & 0x7ff); |
| 67 | |
| 68 | token = td_token(td); |
| 69 | switch (uhci_packetid(token)) { |
| 70 | case USB_PID_SETUP: |
| 71 | spid = "SETUP"; |
| 72 | break; |
| 73 | case USB_PID_OUT: |
| 74 | spid = "OUT"; |
| 75 | break; |
| 76 | case USB_PID_IN: |
| 77 | spid = "IN"; |
| 78 | break; |
| 79 | default: |
| 80 | spid = "?"; |
| 81 | break; |
| 82 | } |
| 83 | |
| 84 | out += sprintf(out, "MaxLen=%x DT%d EndPt=%x Dev=%x, PID=%x(%s) ", |
| 85 | token >> 21, |
| 86 | ((token >> 19) & 1), |
| 87 | (token >> 15) & 15, |
| 88 | (token >> 8) & 127, |
| 89 | (token & 0xff), |
| 90 | spid); |
| 91 | out += sprintf(out, "(buf=%08x)\n", le32_to_cpu(td->buffer)); |
| 92 | |
| 93 | return out - buf; |
| 94 | } |
| 95 | |
Alan Stern | dccf4a4 | 2005-12-17 17:58:46 -0500 | [diff] [blame] | 96 | static int uhci_show_urbp(struct urb_priv *urbp, char *buf, int len, int space) |
| 97 | { |
| 98 | char *out = buf; |
| 99 | struct uhci_td *td; |
| 100 | int i, nactive, ninactive; |
Alan Stern | 4de7d2c | 2006-05-05 16:26:58 -0400 | [diff] [blame] | 101 | char *ptype; |
Alan Stern | dccf4a4 | 2005-12-17 17:58:46 -0500 | [diff] [blame] | 102 | |
| 103 | if (len < 200) |
| 104 | return 0; |
| 105 | |
| 106 | out += sprintf(out, "urb_priv [%p] ", urbp); |
| 107 | out += sprintf(out, "urb [%p] ", urbp->urb); |
| 108 | out += sprintf(out, "qh [%p] ", urbp->qh); |
| 109 | out += sprintf(out, "Dev=%d ", usb_pipedevice(urbp->urb->pipe)); |
| 110 | out += sprintf(out, "EP=%x(%s) ", usb_pipeendpoint(urbp->urb->pipe), |
| 111 | (usb_pipein(urbp->urb->pipe) ? "IN" : "OUT")); |
| 112 | |
| 113 | switch (usb_pipetype(urbp->urb->pipe)) { |
Alan Stern | 4de7d2c | 2006-05-05 16:26:58 -0400 | [diff] [blame] | 114 | case PIPE_ISOCHRONOUS: ptype = "ISO"; break; |
| 115 | case PIPE_INTERRUPT: ptype = "INT"; break; |
| 116 | case PIPE_BULK: ptype = "BLK"; break; |
| 117 | default: |
| 118 | case PIPE_CONTROL: ptype = "CTL"; break; |
Alan Stern | dccf4a4 | 2005-12-17 17:58:46 -0500 | [diff] [blame] | 119 | } |
| 120 | |
Alan Stern | 4de7d2c | 2006-05-05 16:26:58 -0400 | [diff] [blame] | 121 | out += sprintf(out, "%s%s", ptype, (urbp->fsbr ? " FSBR" : "")); |
Alan Stern | 7ea0a2b | 2009-03-05 11:01:11 -0500 | [diff] [blame] | 122 | out += sprintf(out, " Actlen=%d%s", urbp->urb->actual_length, |
| 123 | (urbp->qh->type == USB_ENDPOINT_XFER_CONTROL ? |
| 124 | "-8" : "")); |
Alan Stern | dccf4a4 | 2005-12-17 17:58:46 -0500 | [diff] [blame] | 125 | |
Alan Stern | eb23105 | 2007-08-21 15:40:36 -0400 | [diff] [blame] | 126 | if (urbp->urb->unlinked) |
| 127 | out += sprintf(out, " Unlinked=%d", urbp->urb->unlinked); |
Alan Stern | dccf4a4 | 2005-12-17 17:58:46 -0500 | [diff] [blame] | 128 | out += sprintf(out, "\n"); |
| 129 | |
| 130 | i = nactive = ninactive = 0; |
| 131 | list_for_each_entry(td, &urbp->td_list, list) { |
Alan Stern | c8155cc | 2006-05-19 16:52:35 -0400 | [diff] [blame] | 132 | if (urbp->qh->type != USB_ENDPOINT_XFER_ISOC && |
| 133 | (++i <= 10 || debug > 2)) { |
Alan Stern | dccf4a4 | 2005-12-17 17:58:46 -0500 | [diff] [blame] | 134 | out += sprintf(out, "%*s%d: ", space + 2, "", i); |
| 135 | out += uhci_show_td(td, out, len - (out - buf), 0); |
| 136 | } else { |
| 137 | if (td_status(td) & TD_CTRL_ACTIVE) |
| 138 | ++nactive; |
| 139 | else |
| 140 | ++ninactive; |
| 141 | } |
| 142 | } |
| 143 | if (nactive + ninactive > 0) |
| 144 | out += sprintf(out, "%*s[skipped %d inactive and %d active " |
| 145 | "TDs]\n", |
| 146 | space, "", ninactive, nactive); |
| 147 | |
| 148 | return out - buf; |
| 149 | } |
| 150 | |
Alan Stern | e009f1b | 2007-03-19 15:31:42 -0400 | [diff] [blame] | 151 | static int uhci_show_qh(struct uhci_hcd *uhci, |
| 152 | struct uhci_qh *qh, char *buf, int len, int space) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | { |
| 154 | char *out = buf; |
Alan Stern | dccf4a4 | 2005-12-17 17:58:46 -0500 | [diff] [blame] | 155 | int i, nurbs; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 156 | __le32 element = qh_element(qh); |
Alan Stern | 4de7d2c | 2006-05-05 16:26:58 -0400 | [diff] [blame] | 157 | char *qtype; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 158 | |
| 159 | /* Try to make sure there's enough memory */ |
Alan Stern | caf3827 | 2006-05-19 16:44:55 -0400 | [diff] [blame] | 160 | if (len < 80 * 7) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | return 0; |
| 162 | |
Alan Stern | 4de7d2c | 2006-05-05 16:26:58 -0400 | [diff] [blame] | 163 | switch (qh->type) { |
| 164 | case USB_ENDPOINT_XFER_ISOC: qtype = "ISO"; break; |
| 165 | case USB_ENDPOINT_XFER_INT: qtype = "INT"; break; |
| 166 | case USB_ENDPOINT_XFER_BULK: qtype = "BLK"; break; |
| 167 | case USB_ENDPOINT_XFER_CONTROL: qtype = "CTL"; break; |
| 168 | default: qtype = "Skel" ; break; |
| 169 | } |
| 170 | |
| 171 | out += sprintf(out, "%*s[%p] %s QH link (%08x) element (%08x)\n", |
| 172 | space, "", qh, qtype, |
| 173 | le32_to_cpu(qh->link), le32_to_cpu(element)); |
Alan Stern | caf3827 | 2006-05-19 16:44:55 -0400 | [diff] [blame] | 174 | if (qh->type == USB_ENDPOINT_XFER_ISOC) |
Alan Stern | 3ca2a32 | 2007-01-16 11:56:32 -0500 | [diff] [blame] | 175 | out += sprintf(out, "%*s period %d phase %d load %d us, " |
| 176 | "frame %x desc [%p]\n", |
| 177 | space, "", qh->period, qh->phase, qh->load, |
| 178 | qh->iso_frame, qh->iso_packet_desc); |
| 179 | else if (qh->type == USB_ENDPOINT_XFER_INT) |
| 180 | out += sprintf(out, "%*s period %d phase %d load %d us\n", |
| 181 | space, "", qh->period, qh->phase, qh->load); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | |
| 183 | if (element & UHCI_PTR_QH) |
| 184 | out += sprintf(out, "%*s Element points to QH (bug?)\n", space, ""); |
| 185 | |
| 186 | if (element & UHCI_PTR_DEPTH) |
| 187 | out += sprintf(out, "%*s Depth traverse\n", space, ""); |
| 188 | |
| 189 | if (element & cpu_to_le32(8)) |
| 190 | out += sprintf(out, "%*s Bit 3 set (bug?)\n", space, ""); |
| 191 | |
| 192 | if (!(element & ~(UHCI_PTR_QH | UHCI_PTR_DEPTH))) |
| 193 | out += sprintf(out, "%*s Element is NULL (bug?)\n", space, ""); |
| 194 | |
Alan Stern | dccf4a4 | 2005-12-17 17:58:46 -0500 | [diff] [blame] | 195 | if (list_empty(&qh->queue)) { |
| 196 | out += sprintf(out, "%*s queue is empty\n", space, ""); |
Alan Stern | e009f1b | 2007-03-19 15:31:42 -0400 | [diff] [blame] | 197 | if (qh == uhci->skel_async_qh) |
| 198 | out += uhci_show_td(uhci->term_td, out, |
| 199 | len - (out - buf), 0); |
Alan Stern | dccf4a4 | 2005-12-17 17:58:46 -0500 | [diff] [blame] | 200 | } else { |
| 201 | struct urb_priv *urbp = list_entry(qh->queue.next, |
| 202 | struct urb_priv, node); |
| 203 | struct uhci_td *td = list_entry(urbp->td_list.next, |
| 204 | struct uhci_td, list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 205 | |
Alan Stern | 28b9325 | 2007-02-19 15:51:51 -0500 | [diff] [blame] | 206 | if (element != LINK_TO_TD(td)) |
Alan Stern | dccf4a4 | 2005-12-17 17:58:46 -0500 | [diff] [blame] | 207 | out += sprintf(out, "%*s Element != First TD\n", |
| 208 | space, ""); |
| 209 | i = nurbs = 0; |
| 210 | list_for_each_entry(urbp, &qh->queue, node) { |
| 211 | if (++i <= 10) |
| 212 | out += uhci_show_urbp(urbp, out, |
| 213 | len - (out - buf), space + 2); |
| 214 | else |
| 215 | ++nurbs; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | } |
Alan Stern | dccf4a4 | 2005-12-17 17:58:46 -0500 | [diff] [blame] | 217 | if (nurbs > 0) |
| 218 | out += sprintf(out, "%*s Skipped %d URBs\n", |
| 219 | space, "", nurbs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | } |
| 221 | |
Alan Stern | 85a975d | 2007-01-08 12:01:43 -0500 | [diff] [blame] | 222 | if (qh->dummy_td) { |
Alan Stern | af0bb59 | 2005-12-17 18:00:12 -0500 | [diff] [blame] | 223 | out += sprintf(out, "%*s Dummy TD\n", space, ""); |
| 224 | out += uhci_show_td(qh->dummy_td, out, len - (out - buf), 0); |
| 225 | } |
| 226 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | return out - buf; |
| 228 | } |
| 229 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 230 | static int uhci_show_sc(int port, unsigned short status, char *buf, int len) |
| 231 | { |
| 232 | char *out = buf; |
| 233 | |
| 234 | /* Try to make sure there's enough memory */ |
| 235 | if (len < 160) |
| 236 | return 0; |
| 237 | |
| 238 | out += sprintf(out, " stat%d = %04x %s%s%s%s%s%s%s%s%s%s\n", |
| 239 | port, |
| 240 | status, |
| 241 | (status & USBPORTSC_SUSP) ? " Suspend" : "", |
| 242 | (status & USBPORTSC_OCC) ? " OverCurrentChange" : "", |
| 243 | (status & USBPORTSC_OC) ? " OverCurrent" : "", |
| 244 | (status & USBPORTSC_PR) ? " Reset" : "", |
| 245 | (status & USBPORTSC_LSDA) ? " LowSpeed" : "", |
| 246 | (status & USBPORTSC_RD) ? " ResumeDetect" : "", |
| 247 | (status & USBPORTSC_PEC) ? " EnableChange" : "", |
| 248 | (status & USBPORTSC_PE) ? " Enabled" : "", |
| 249 | (status & USBPORTSC_CSC) ? " ConnectChange" : "", |
| 250 | (status & USBPORTSC_CCS) ? " Connected" : ""); |
| 251 | |
| 252 | return out - buf; |
| 253 | } |
| 254 | |
Alan Stern | c8f4fe4 | 2005-04-09 17:27:32 -0400 | [diff] [blame] | 255 | static int uhci_show_root_hub_state(struct uhci_hcd *uhci, char *buf, int len) |
| 256 | { |
| 257 | char *out = buf; |
| 258 | char *rh_state; |
| 259 | |
| 260 | /* Try to make sure there's enough memory */ |
| 261 | if (len < 60) |
| 262 | return 0; |
| 263 | |
| 264 | switch (uhci->rh_state) { |
| 265 | case UHCI_RH_RESET: |
| 266 | rh_state = "reset"; break; |
| 267 | case UHCI_RH_SUSPENDED: |
| 268 | rh_state = "suspended"; break; |
| 269 | case UHCI_RH_AUTO_STOPPED: |
| 270 | rh_state = "auto-stopped"; break; |
| 271 | case UHCI_RH_RESUMING: |
| 272 | rh_state = "resuming"; break; |
| 273 | case UHCI_RH_SUSPENDING: |
| 274 | rh_state = "suspending"; break; |
| 275 | case UHCI_RH_RUNNING: |
| 276 | rh_state = "running"; break; |
| 277 | case UHCI_RH_RUNNING_NODEVS: |
| 278 | rh_state = "running, no devs"; break; |
| 279 | default: |
| 280 | rh_state = "?"; break; |
| 281 | } |
Alan Stern | 84afddd | 2006-05-12 11:35:45 -0400 | [diff] [blame] | 282 | out += sprintf(out, "Root-hub state: %s FSBR: %d\n", |
| 283 | rh_state, uhci->fsbr_is_on); |
Alan Stern | c8f4fe4 | 2005-04-09 17:27:32 -0400 | [diff] [blame] | 284 | return out - buf; |
| 285 | } |
| 286 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | static int uhci_show_status(struct uhci_hcd *uhci, char *buf, int len) |
| 288 | { |
| 289 | char *out = buf; |
| 290 | unsigned long io_addr = uhci->io_addr; |
| 291 | unsigned short usbcmd, usbstat, usbint, usbfrnum; |
| 292 | unsigned int flbaseadd; |
| 293 | unsigned char sof; |
| 294 | unsigned short portsc1, portsc2; |
| 295 | |
| 296 | /* Try to make sure there's enough memory */ |
Alan Stern | c433472 | 2006-05-19 16:34:57 -0400 | [diff] [blame] | 297 | if (len < 80 * 9) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 298 | return 0; |
| 299 | |
| 300 | usbcmd = inw(io_addr + 0); |
| 301 | usbstat = inw(io_addr + 2); |
| 302 | usbint = inw(io_addr + 4); |
| 303 | usbfrnum = inw(io_addr + 6); |
| 304 | flbaseadd = inl(io_addr + 8); |
| 305 | sof = inb(io_addr + 12); |
| 306 | portsc1 = inw(io_addr + 16); |
| 307 | portsc2 = inw(io_addr + 18); |
| 308 | |
| 309 | out += sprintf(out, " usbcmd = %04x %s%s%s%s%s%s%s%s\n", |
| 310 | usbcmd, |
| 311 | (usbcmd & USBCMD_MAXP) ? "Maxp64 " : "Maxp32 ", |
| 312 | (usbcmd & USBCMD_CF) ? "CF " : "", |
| 313 | (usbcmd & USBCMD_SWDBG) ? "SWDBG " : "", |
| 314 | (usbcmd & USBCMD_FGR) ? "FGR " : "", |
| 315 | (usbcmd & USBCMD_EGSM) ? "EGSM " : "", |
| 316 | (usbcmd & USBCMD_GRESET) ? "GRESET " : "", |
| 317 | (usbcmd & USBCMD_HCRESET) ? "HCRESET " : "", |
| 318 | (usbcmd & USBCMD_RS) ? "RS " : ""); |
| 319 | |
| 320 | out += sprintf(out, " usbstat = %04x %s%s%s%s%s%s\n", |
| 321 | usbstat, |
| 322 | (usbstat & USBSTS_HCH) ? "HCHalted " : "", |
| 323 | (usbstat & USBSTS_HCPE) ? "HostControllerProcessError " : "", |
| 324 | (usbstat & USBSTS_HSE) ? "HostSystemError " : "", |
| 325 | (usbstat & USBSTS_RD) ? "ResumeDetect " : "", |
| 326 | (usbstat & USBSTS_ERROR) ? "USBError " : "", |
| 327 | (usbstat & USBSTS_USBINT) ? "USBINT " : ""); |
| 328 | |
| 329 | out += sprintf(out, " usbint = %04x\n", usbint); |
| 330 | out += sprintf(out, " usbfrnum = (%d)%03x\n", (usbfrnum >> 10) & 1, |
| 331 | 0xfff & (4*(unsigned int)usbfrnum)); |
| 332 | out += sprintf(out, " flbaseadd = %08x\n", flbaseadd); |
| 333 | out += sprintf(out, " sof = %02x\n", sof); |
| 334 | out += uhci_show_sc(1, portsc1, out, len - (out - buf)); |
| 335 | out += uhci_show_sc(2, portsc2, out, len - (out - buf)); |
Alan Stern | c8155cc | 2006-05-19 16:52:35 -0400 | [diff] [blame] | 336 | out += sprintf(out, "Most recent frame: %x (%d) " |
| 337 | "Last ISO frame: %x (%d)\n", |
| 338 | uhci->frame_number, uhci->frame_number & 1023, |
| 339 | uhci->last_iso_frame, uhci->last_iso_frame & 1023); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | |
| 341 | return out - buf; |
| 342 | } |
| 343 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 344 | static int uhci_sprint_schedule(struct uhci_hcd *uhci, char *buf, int len) |
| 345 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | char *out = buf; |
| 347 | int i, j; |
| 348 | struct uhci_qh *qh; |
| 349 | struct uhci_td *td; |
| 350 | struct list_head *tmp, *head; |
Alan Stern | f3fe239 | 2007-01-08 12:00:28 -0500 | [diff] [blame] | 351 | int nframes, nerrs; |
Alan Stern | 17230ac | 2007-02-19 15:52:45 -0500 | [diff] [blame] | 352 | __le32 link; |
Alan Stern | e009f1b | 2007-03-19 15:31:42 -0400 | [diff] [blame] | 353 | __le32 fsbr_link; |
Alan Stern | 17230ac | 2007-02-19 15:52:45 -0500 | [diff] [blame] | 354 | |
| 355 | static const char * const qh_names[] = { |
| 356 | "unlink", "iso", "int128", "int64", "int32", "int16", |
| 357 | "int8", "int4", "int2", "async", "term" |
| 358 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 359 | |
Alan Stern | c8f4fe4 | 2005-04-09 17:27:32 -0400 | [diff] [blame] | 360 | out += uhci_show_root_hub_state(uhci, out, len - (out - buf)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | out += sprintf(out, "HC status\n"); |
| 362 | out += uhci_show_status(uhci, out, len - (out - buf)); |
Alan Stern | 3ca2a32 | 2007-01-16 11:56:32 -0500 | [diff] [blame] | 363 | |
| 364 | out += sprintf(out, "Periodic load table\n"); |
| 365 | for (i = 0; i < MAX_PHASE; ++i) { |
| 366 | out += sprintf(out, "\t%d", uhci->load[i]); |
| 367 | if (i % 8 == 7) |
| 368 | *out++ = '\n'; |
| 369 | } |
| 370 | out += sprintf(out, "Total: %d, #INT: %d, #ISO: %d\n", |
| 371 | uhci->total_load, |
| 372 | uhci_to_hcd(uhci)->self.bandwidth_int_reqs, |
| 373 | uhci_to_hcd(uhci)->self.bandwidth_isoc_reqs); |
Alan Stern | dccf4a4 | 2005-12-17 17:58:46 -0500 | [diff] [blame] | 374 | if (debug <= 1) |
| 375 | return out - buf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 376 | |
| 377 | out += sprintf(out, "Frame List\n"); |
Alan Stern | f3fe239 | 2007-01-08 12:00:28 -0500 | [diff] [blame] | 378 | nframes = 10; |
| 379 | nerrs = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 380 | for (i = 0; i < UHCI_NUMFRAMES; ++i) { |
Alan Stern | 17230ac | 2007-02-19 15:52:45 -0500 | [diff] [blame] | 381 | __le32 qh_dma; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 382 | |
Alan Stern | f3fe239 | 2007-01-08 12:00:28 -0500 | [diff] [blame] | 383 | j = 0; |
| 384 | td = uhci->frame_cpu[i]; |
| 385 | link = uhci->frame[i]; |
| 386 | if (!td) |
| 387 | goto check_link; |
| 388 | |
| 389 | if (nframes > 0) { |
| 390 | out += sprintf(out, "- Frame %d -> (%08x)\n", |
| 391 | i, le32_to_cpu(link)); |
| 392 | j = 1; |
| 393 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 394 | |
| 395 | head = &td->fl_list; |
| 396 | tmp = head; |
| 397 | do { |
| 398 | td = list_entry(tmp, struct uhci_td, fl_list); |
| 399 | tmp = tmp->next; |
Alan Stern | 28b9325 | 2007-02-19 15:51:51 -0500 | [diff] [blame] | 400 | if (link != LINK_TO_TD(td)) { |
Alan Stern | f3fe239 | 2007-01-08 12:00:28 -0500 | [diff] [blame] | 401 | if (nframes > 0) |
| 402 | out += sprintf(out, " link does " |
| 403 | "not match list entry!\n"); |
| 404 | else |
| 405 | ++nerrs; |
| 406 | } |
| 407 | if (nframes > 0) |
| 408 | out += uhci_show_td(td, out, |
| 409 | len - (out - buf), 4); |
| 410 | link = td->link; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 411 | } while (tmp != head); |
Alan Stern | f3fe239 | 2007-01-08 12:00:28 -0500 | [diff] [blame] | 412 | |
| 413 | check_link: |
| 414 | qh_dma = uhci_frame_skel_link(uhci, i); |
| 415 | if (link != qh_dma) { |
| 416 | if (nframes > 0) { |
| 417 | if (!j) { |
| 418 | out += sprintf(out, |
| 419 | "- Frame %d -> (%08x)\n", |
| 420 | i, le32_to_cpu(link)); |
| 421 | j = 1; |
| 422 | } |
| 423 | out += sprintf(out, " link does not match " |
| 424 | "QH (%08x)!\n", le32_to_cpu(qh_dma)); |
| 425 | } else |
| 426 | ++nerrs; |
| 427 | } |
| 428 | nframes -= j; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 429 | } |
Alan Stern | f3fe239 | 2007-01-08 12:00:28 -0500 | [diff] [blame] | 430 | if (nerrs > 0) |
| 431 | out += sprintf(out, "Skipped %d bad links\n", nerrs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 432 | |
Alan Stern | 687f5f3 | 2005-11-30 17:16:19 -0500 | [diff] [blame] | 433 | out += sprintf(out, "Skeleton QHs\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 434 | |
Alan Stern | e009f1b | 2007-03-19 15:31:42 -0400 | [diff] [blame] | 435 | fsbr_link = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 436 | for (i = 0; i < UHCI_NUM_SKELQH; ++i) { |
Alan Stern | dccf4a4 | 2005-12-17 17:58:46 -0500 | [diff] [blame] | 437 | int cnt = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 438 | |
| 439 | qh = uhci->skelqh[i]; |
Alan Stern | 17230ac | 2007-02-19 15:52:45 -0500 | [diff] [blame] | 440 | out += sprintf(out, "- skel_%s_qh\n", qh_names[i]); \ |
Alan Stern | e009f1b | 2007-03-19 15:31:42 -0400 | [diff] [blame] | 441 | out += uhci_show_qh(uhci, qh, out, len - (out - buf), 4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 442 | |
| 443 | /* Last QH is the Terminating QH, it's different */ |
Alan Stern | 17230ac | 2007-02-19 15:52:45 -0500 | [diff] [blame] | 444 | if (i == SKEL_TERM) { |
Alan Stern | 28b9325 | 2007-02-19 15:51:51 -0500 | [diff] [blame] | 445 | if (qh_element(qh) != LINK_TO_TD(uhci->term_td)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 446 | out += sprintf(out, " skel_term_qh element is not set to term_td!\n"); |
Alan Stern | e009f1b | 2007-03-19 15:31:42 -0400 | [diff] [blame] | 447 | link = fsbr_link; |
| 448 | if (!link) |
| 449 | link = LINK_TO_QH(uhci->skel_term_qh); |
| 450 | goto check_qh_link; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 451 | } |
| 452 | |
Alan Stern | dccf4a4 | 2005-12-17 17:58:46 -0500 | [diff] [blame] | 453 | head = &qh->node; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | tmp = head->next; |
| 455 | |
| 456 | while (tmp != head) { |
Alan Stern | dccf4a4 | 2005-12-17 17:58:46 -0500 | [diff] [blame] | 457 | qh = list_entry(tmp, struct uhci_qh, node); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 458 | tmp = tmp->next; |
Alan Stern | dccf4a4 | 2005-12-17 17:58:46 -0500 | [diff] [blame] | 459 | if (++cnt <= 10) |
Alan Stern | e009f1b | 2007-03-19 15:31:42 -0400 | [diff] [blame] | 460 | out += uhci_show_qh(uhci, qh, out, |
Alan Stern | dccf4a4 | 2005-12-17 17:58:46 -0500 | [diff] [blame] | 461 | len - (out - buf), 4); |
Alan Stern | 17230ac | 2007-02-19 15:52:45 -0500 | [diff] [blame] | 462 | if (!fsbr_link && qh->skel >= SKEL_FSBR) |
| 463 | fsbr_link = LINK_TO_QH(qh); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 464 | } |
Alan Stern | dccf4a4 | 2005-12-17 17:58:46 -0500 | [diff] [blame] | 465 | if ((cnt -= 10) > 0) |
| 466 | out += sprintf(out, " Skipped %d QHs\n", cnt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 467 | |
Alan Stern | 17230ac | 2007-02-19 15:52:45 -0500 | [diff] [blame] | 468 | link = UHCI_PTR_TERM; |
| 469 | if (i <= SKEL_ISO) |
| 470 | ; |
| 471 | else if (i < SKEL_ASYNC) |
| 472 | link = LINK_TO_QH(uhci->skel_async_qh); |
| 473 | else if (!uhci->fsbr_is_on) |
| 474 | ; |
Alan Stern | 17230ac | 2007-02-19 15:52:45 -0500 | [diff] [blame] | 475 | else |
| 476 | link = LINK_TO_QH(uhci->skel_term_qh); |
| 477 | check_qh_link: |
| 478 | if (qh->link != link) |
| 479 | out += sprintf(out, " last QH not linked to next skeleton!\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 480 | } |
| 481 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 482 | return out - buf; |
| 483 | } |
| 484 | |
Alan Stern | 8d402e1 | 2005-12-17 18:03:37 -0500 | [diff] [blame] | 485 | #ifdef CONFIG_DEBUG_FS |
| 486 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 487 | #define MAX_OUTPUT (64 * 1024) |
| 488 | |
| 489 | struct uhci_debug { |
| 490 | int size; |
| 491 | char *data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 492 | }; |
| 493 | |
| 494 | static int uhci_debug_open(struct inode *inode, struct file *file) |
| 495 | { |
Theodore Ts'o | 8e18e29 | 2006-09-27 01:50:46 -0700 | [diff] [blame] | 496 | struct uhci_hcd *uhci = inode->i_private; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | struct uhci_debug *up; |
| 498 | int ret = -ENOMEM; |
Alan Stern | dccf4a4 | 2005-12-17 17:58:46 -0500 | [diff] [blame] | 499 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 500 | |
| 501 | lock_kernel(); |
| 502 | up = kmalloc(sizeof(*up), GFP_KERNEL); |
| 503 | if (!up) |
| 504 | goto out; |
| 505 | |
| 506 | up->data = kmalloc(MAX_OUTPUT, GFP_KERNEL); |
| 507 | if (!up->data) { |
| 508 | kfree(up); |
| 509 | goto out; |
| 510 | } |
| 511 | |
Alan Stern | 8d402e1 | 2005-12-17 18:03:37 -0500 | [diff] [blame] | 512 | up->size = 0; |
Alan Stern | dccf4a4 | 2005-12-17 17:58:46 -0500 | [diff] [blame] | 513 | spin_lock_irqsave(&uhci->lock, flags); |
Alan Stern | 8d402e1 | 2005-12-17 18:03:37 -0500 | [diff] [blame] | 514 | if (uhci->is_initialized) |
| 515 | up->size = uhci_sprint_schedule(uhci, up->data, MAX_OUTPUT); |
Alan Stern | dccf4a4 | 2005-12-17 17:58:46 -0500 | [diff] [blame] | 516 | spin_unlock_irqrestore(&uhci->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 517 | |
| 518 | file->private_data = up; |
| 519 | |
| 520 | ret = 0; |
| 521 | out: |
| 522 | unlock_kernel(); |
| 523 | return ret; |
| 524 | } |
| 525 | |
| 526 | static loff_t uhci_debug_lseek(struct file *file, loff_t off, int whence) |
| 527 | { |
| 528 | struct uhci_debug *up; |
| 529 | loff_t new = -1; |
| 530 | |
| 531 | lock_kernel(); |
| 532 | up = file->private_data; |
| 533 | |
| 534 | switch (whence) { |
| 535 | case 0: |
| 536 | new = off; |
| 537 | break; |
| 538 | case 1: |
| 539 | new = file->f_pos + off; |
| 540 | break; |
| 541 | } |
| 542 | if (new < 0 || new > up->size) { |
| 543 | unlock_kernel(); |
| 544 | return -EINVAL; |
| 545 | } |
| 546 | unlock_kernel(); |
| 547 | return (file->f_pos = new); |
| 548 | } |
| 549 | |
| 550 | static ssize_t uhci_debug_read(struct file *file, char __user *buf, |
| 551 | size_t nbytes, loff_t *ppos) |
| 552 | { |
| 553 | struct uhci_debug *up = file->private_data; |
| 554 | return simple_read_from_buffer(buf, nbytes, ppos, up->data, up->size); |
| 555 | } |
| 556 | |
| 557 | static int uhci_debug_release(struct inode *inode, struct file *file) |
| 558 | { |
| 559 | struct uhci_debug *up = file->private_data; |
| 560 | |
| 561 | kfree(up->data); |
| 562 | kfree(up); |
| 563 | |
| 564 | return 0; |
| 565 | } |
| 566 | |
Alan Stern | 8d402e1 | 2005-12-17 18:03:37 -0500 | [diff] [blame] | 567 | #undef uhci_debug_operations |
Luiz Fernando N. Capitulino | 066202d | 2006-08-05 20:37:11 -0300 | [diff] [blame] | 568 | static const struct file_operations uhci_debug_operations = { |
Alan Stern | 8d402e1 | 2005-12-17 18:03:37 -0500 | [diff] [blame] | 569 | .owner = THIS_MODULE, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 570 | .open = uhci_debug_open, |
| 571 | .llseek = uhci_debug_lseek, |
| 572 | .read = uhci_debug_read, |
| 573 | .release = uhci_debug_release, |
| 574 | }; |
| 575 | |
Alan Stern | 8d402e1 | 2005-12-17 18:03:37 -0500 | [diff] [blame] | 576 | #endif /* CONFIG_DEBUG_FS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 577 | |
Alan Stern | 8d402e1 | 2005-12-17 18:03:37 -0500 | [diff] [blame] | 578 | #else /* DEBUG */ |
| 579 | |
| 580 | static inline void lprintk(char *buf) |
| 581 | {} |
| 582 | |
Alan Stern | e009f1b | 2007-03-19 15:31:42 -0400 | [diff] [blame] | 583 | static inline int uhci_show_qh(struct uhci_hcd *uhci, |
| 584 | struct uhci_qh *qh, char *buf, int len, int space) |
Alan Stern | 8d402e1 | 2005-12-17 18:03:37 -0500 | [diff] [blame] | 585 | { |
| 586 | return 0; |
| 587 | } |
| 588 | |
| 589 | static inline int uhci_sprint_schedule(struct uhci_hcd *uhci, |
| 590 | char *buf, int len) |
| 591 | { |
| 592 | return 0; |
| 593 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 594 | |
| 595 | #endif |