patch-2.4.21 linux-2.4.21/drivers/usb/uhci-debug.h
Next file: linux-2.4.21/drivers/usb/uhci.c
Previous file: linux-2.4.21/drivers/usb/tiglusb.c
Back to the patch index
Back to the overall index
- Lines: 574
- Date:
1969-12-31 16:00:00.000000000 -0800
- Orig file:
linux-2.4.20/drivers/usb/uhci-debug.h
- Orig date:
2001-11-22 11:49:54.000000000 -0800
diff -urN linux-2.4.20/drivers/usb/uhci-debug.h linux-2.4.21/drivers/usb/uhci-debug.h
@@ -1,573 +0,0 @@
-/*
- * 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/config.h>
-#include <linux/kernel.h>
-#include <linux/proc_fs.h>
-#include <asm/io.h>
-
-#include "uhci.h"
-
-/* Handle REALLY large printk's so we don't overflow buffers */
-static void inline lprintk(char *buf)
-{
- char *p;
-
- /* Just write one line at a time */
- while (buf) {
- p = strchr(buf, '\n');
- if (p)
- *p = 0;
- printk("%s\n", buf);
- buf = p;
- if (buf)
- buf++;
- }
-}
-
-static int inline uhci_is_skeleton_td(struct uhci *uhci, struct uhci_td *td)
-{
- int i;
-
- for (i = 0; i < UHCI_NUM_SKELTD; i++)
- if (td == uhci->skeltd[i])
- return 1;
-
- return 0;
-}
-
-static int inline uhci_is_skeleton_qh(struct uhci *uhci, struct uhci_qh *qh)
-{
- int i;
-
- for (i = 0; i < UHCI_NUM_SKELQH; i++)
- if (qh == uhci->skelqh[i])
- return 1;
-
- return 0;
-}
-
-static int uhci_show_td(struct uhci_td *td, char *buf, int len, int space)
-{
- char *out = buf;
- char *spid;
-
- /* Try to make sure there's enough memory */
- if (len < 160)
- return 0;
-
- out += sprintf(out, "%*s[%p] link (%08x) ", space, "", td, td->link);
- out += sprintf(out, "e%d %s%s%s%s%s%s%s%s%s%sLength=%x ",
- ((td->status >> 27) & 3),
- (td->status & TD_CTRL_SPD) ? "SPD " : "",
- (td->status & TD_CTRL_LS) ? "LS " : "",
- (td->status & TD_CTRL_IOC) ? "IOC " : "",
- (td->status & TD_CTRL_ACTIVE) ? "Active " : "",
- (td->status & TD_CTRL_STALLED) ? "Stalled " : "",
- (td->status & TD_CTRL_DBUFERR) ? "DataBufErr " : "",
- (td->status & TD_CTRL_BABBLE) ? "Babble " : "",
- (td->status & TD_CTRL_NAK) ? "NAK " : "",
- (td->status & TD_CTRL_CRCTIMEO) ? "CRC/Timeo " : "",
- (td->status & TD_CTRL_BITSTUFF) ? "BitStuff " : "",
- td->status & 0x7ff);
-
- switch (td->info & 0xff) {
- 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) ",
- td->info >> 21,
- ((td->info >> 19) & 1),
- (td->info >> 15) & 15,
- (td->info >> 8) & 127,
- (td->info & 0xff),
- spid);
- out += sprintf(out, "(buf=%08x)\n", td->buffer);
-
- return out - buf;
-}
-
-static int uhci_show_sc(int port, unsigned short status, char *buf, int len)
-{
- char *out = buf;
-
- /* Try to make sure there's enough memory */
- if (len < 80)
- return 0;
-
- out += sprintf(out, " stat%d = %04x %s%s%s%s%s%s%s%s\n",
- port,
- status,
- (status & USBPORTSC_SUSP) ? "PortSuspend " : "",
- (status & USBPORTSC_PR) ? "PortReset " : "",
- (status & USBPORTSC_LSDA) ? "LowSpeed " : "",
- (status & USBPORTSC_RD) ? "ResumeDetect " : "",
- (status & USBPORTSC_PEC) ? "EnableChange " : "",
- (status & USBPORTSC_PE) ? "PortEnabled " : "",
- (status & USBPORTSC_CSC) ? "ConnectChange " : "",
- (status & USBPORTSC_CCS) ? "PortConnected " : "");
-
- return out - buf;
-}
-
-static int uhci_show_status(struct uhci *uhci, char *buf, int len)
-{
- char *out = buf;
- unsigned int io_addr = uhci->io_addr;
- unsigned short usbcmd, usbstat, usbint, usbfrnum;
- unsigned int flbaseadd;
- unsigned char sof;
- unsigned short portsc1, portsc2;
-
- /* Try to make sure there's enough memory */
- if (len < 80 * 6)
- return 0;
-
- usbcmd = inw(io_addr + 0);
- usbstat = inw(io_addr + 2);
- usbint = inw(io_addr + 4);
- usbfrnum = inw(io_addr + 6);
- flbaseadd = inl(io_addr + 8);
- sof = inb(io_addr + 12);
- portsc1 = inw(io_addr + 16);
- portsc2 = inw(io_addr + 18);
-
- 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 " : "");
-
- 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 " : "");
-
- 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);
- out += uhci_show_sc(1, portsc1, out, len - (out - buf));
- out += uhci_show_sc(2, portsc2, out, len - (out - buf));
-
- return out - buf;
-}
-
-static int uhci_show_qh(struct uhci_qh *qh, char *buf, int len, int space)
-{
- char *out = buf;
- struct urb_priv *urbp;
- struct list_head *head, *tmp;
- struct uhci_td *td;
- int i = 0, checked = 0, prevactive = 0;
-
- /* Try to make sure there's enough memory */
- if (len < 80 * 6)
- return 0;
-
- out += sprintf(out, "%*s[%p] link (%08x) element (%08x)\n", space, "",
- qh, qh->link, qh->element);
-
- if (qh->element & UHCI_PTR_QH)
- out += sprintf(out, "%*s Element points to QH (bug?)\n", space, "");
-
- if (qh->element & UHCI_PTR_DEPTH)
- out += sprintf(out, "%*s Depth traverse\n", space, "");
-
- if (qh->element & 8)
- out += sprintf(out, "%*s Bit 3 set (bug?)\n", space, "");
-
- if (!(qh->element & ~(UHCI_PTR_QH | UHCI_PTR_DEPTH)))
- out += sprintf(out, "%*s Element is NULL (bug?)\n", space, "");
-
- if (!qh->urbp) {
- out += sprintf(out, "%*s urbp == NULL\n", space, "");
- goto out;
- }
-
- urbp = qh->urbp;
-
- head = &urbp->td_list;
- tmp = head->next;
-
- td = list_entry(tmp, struct uhci_td, list);
-
- if (td->dma_handle != (qh->element & ~UHCI_PTR_BITS))
- out += sprintf(out, "%*s Element != First TD\n", space, "");
-
- while (tmp != head) {
- struct uhci_td *td = list_entry(tmp, struct uhci_td, list);
-
- tmp = tmp->next;
-
- out += sprintf(out, "%*s%d: ", space + 2, "", i++);
- out += uhci_show_td(td, out, len - (out - buf), 0);
-
- if (i > 10 && !checked && prevactive && tmp != head &&
- debug <= 2) {
- struct list_head *ntmp = tmp;
- struct uhci_td *ntd = td;
- int active = 1, ni = i;
-
- checked = 1;
-
- while (ntmp != head && ntmp->next != head && active) {
- ntd = list_entry(ntmp, struct uhci_td, list);
-
- ntmp = ntmp->next;
-
- active = ntd->status & TD_CTRL_ACTIVE;
-
- ni++;
- }
-
- if (active && ni > i) {
- out += sprintf(out, "%*s[skipped %d active TD's]\n", space, "", ni - i);
- tmp = ntmp;
- td = ntd;
- i = ni;
- }
- }
-
- prevactive = td->status & TD_CTRL_ACTIVE;
- }
-
- if (list_empty(&urbp->queue_list) || urbp->queued)
- goto out;
-
- out += sprintf(out, "%*sQueued QH's:\n", -space, "--");
-
- head = &urbp->queue_list;
- tmp = head->next;
-
- while (tmp != head) {
- struct urb_priv *nurbp = list_entry(tmp, struct urb_priv,
- queue_list);
- tmp = tmp->next;
-
- out += uhci_show_qh(nurbp->qh, out, len - (out - buf), space);
- }
-
-out:
- return out - buf;
-}
-
-static const char *td_names[] = {"skel_int1_td", "skel_int2_td",
- "skel_int4_td", "skel_int8_td",
- "skel_int16_td", "skel_int32_td",
- "skel_int64_td", "skel_int128_td",
- "skel_int256_td", "skel_term_td" };
-static const char *qh_names[] = { "skel_ls_control_qh", "skel_hs_control_qh",
- "skel_bulk_qh", "skel_term_qh" };
-
-#define show_frame_num() \
- if (!shown) { \
- shown = 1; \
- out += sprintf(out, "- Frame %d\n", i); \
- }
-
-#define show_td_name() \
- if (!shown) { \
- shown = 1; \
- out += sprintf(out, "- %s\n", td_names[i]); \
- }
-
-#define show_qh_name() \
- if (!shown) { \
- shown = 1; \
- out += sprintf(out, "- %s\n", qh_names[i]); \
- }
-
-static int uhci_sprint_schedule(struct uhci *uhci, char *buf, int len)
-{
- char *out = buf;
- int i;
- struct uhci_qh *qh;
- struct uhci_td *td;
- struct list_head *tmp, *head;
-
- out += sprintf(out, "HC status\n");
- out += uhci_show_status(uhci, out, len - (out - buf));
-
- out += sprintf(out, "Frame List\n");
- for (i = 0; i < UHCI_NUMFRAMES; ++i) {
- int shown = 0;
- td = uhci->fl->frame_cpu[i];
- if (!td)
- continue;
-
- if (td->dma_handle != (dma_addr_t)uhci->fl->frame[i]) {
- show_frame_num();
- out += sprintf(out, " frame list does not match td->dma_handle!\n");
- }
- if (uhci_is_skeleton_td(uhci, td))
- continue;
- show_frame_num();
-
- head = &td->fl_list;
- tmp = head;
- do {
- td = list_entry(tmp, struct uhci_td, fl_list);
- tmp = tmp->next;
- out += uhci_show_td(td, out, len - (out - buf), 4);
- } while (tmp != head);
- }
-
- out += sprintf(out, "Skeleton TD's\n");
- for (i = UHCI_NUM_SKELTD - 1; i >= 0; i--) {
- int shown = 0;
-
- td = uhci->skeltd[i];
-
- if (debug > 1) {
- show_td_name();
- out += uhci_show_td(td, out, len - (out - buf), 4);
- }
-
- if (list_empty(&td->fl_list)) {
- /* TD 0 is the int1 TD and links to control_ls_qh */
- if (!i) {
- if (td->link !=
- (uhci->skel_ls_control_qh->dma_handle | UHCI_PTR_QH)) {
- show_td_name();
- out += sprintf(out, " skeleton TD not linked to ls_control QH!\n");
- }
- } else if (i < 9) {
- if (td->link != uhci->skeltd[i - 1]->dma_handle) {
- show_td_name();
- out += sprintf(out, " skeleton TD not linked to next skeleton TD!\n");
- }
- } else {
- show_td_name();
-
- if (td->link != td->dma_handle)
- out += sprintf(out, " skel_term_td does not link to self\n");
-
- /* Don't show it twice */
- if (debug <= 1)
- out += uhci_show_td(td, out, len - (out - buf), 4);
- }
-
- continue;
- }
-
- show_td_name();
-
- head = &td->fl_list;
- tmp = head->next;
-
- while (tmp != head) {
- td = list_entry(tmp, struct uhci_td, fl_list);
-
- tmp = tmp->next;
-
- out += uhci_show_td(td, out, len - (out - buf), 4);
- }
-
- if (!i) {
- if (td->link !=
- (uhci->skel_ls_control_qh->dma_handle | UHCI_PTR_QH))
- out += sprintf(out, " last TD not linked to ls_control QH!\n");
- } else if (i < 9) {
- if (td->link != uhci->skeltd[i - 1]->dma_handle)
- out += sprintf(out, " last TD not linked to next skeleton!\n");
- }
- }
-
- out += sprintf(out, "Skeleton QH's\n");
-
- for (i = 0; i < UHCI_NUM_SKELQH; ++i) {
- int shown = 0;
-
- qh = uhci->skelqh[i];
-
- if (debug > 1) {
- show_qh_name();
- out += uhci_show_qh(qh, out, len - (out - buf), 4);
- }
-
- /* QH 3 is the Terminating QH, it's different */
- if (i == 3) {
- if (qh->link != UHCI_PTR_TERM) {
- show_qh_name();
- out += sprintf(out, " bandwidth reclamation on!\n");
- }
-
- if (qh->element != uhci->skel_term_td->dma_handle) {
- show_qh_name();
- out += sprintf(out, " skel_term_qh element is not set to skel_term_td\n");
- }
- }
-
- if (list_empty(&qh->list)) {
- if (i < 3) {
- if (qh->link !=
- (uhci->skelqh[i + 1]->dma_handle | UHCI_PTR_QH)) {
- show_qh_name();
- out += sprintf(out, " skeleton QH not linked to next skeleton QH!\n");
- }
- }
-
- continue;
- }
-
- show_qh_name();
-
- head = &qh->list;
- tmp = head->next;
-
- while (tmp != head) {
- qh = list_entry(tmp, struct uhci_qh, list);
-
- tmp = tmp->next;
-
- out += uhci_show_qh(qh, out, len - (out - buf), 4);
- }
-
- if (i < 3) {
- if (qh->link !=
- (uhci->skelqh[i + 1]->dma_handle | UHCI_PTR_QH))
- out += sprintf(out, " last QH not linked to next skeleton!\n");
- }
- }
-
- return out - buf;
-}
-
-#ifdef CONFIG_PROC_FS
-#define MAX_OUTPUT (PAGE_SIZE * 8)
-
-static struct proc_dir_entry *uhci_proc_root = NULL;
-
-struct uhci_proc {
- int size;
- char *data;
- struct uhci *uhci;
-};
-
-static int uhci_proc_open(struct inode *inode, struct file *file)
-{
- const struct proc_dir_entry *dp = inode->u.generic_ip;
- struct uhci *uhci = dp->data;
- struct uhci_proc *up;
- unsigned long flags;
- int ret = -ENOMEM;
-
- lock_kernel();
- up = kmalloc(sizeof(*up), GFP_KERNEL);
- if (!up)
- goto out;
-
- up->data = kmalloc(MAX_OUTPUT, GFP_KERNEL);
- if (!up->data) {
- kfree(up);
- goto out;
- }
-
- spin_lock_irqsave(&uhci->frame_list_lock, flags);
- up->size = uhci_sprint_schedule(uhci, up->data, MAX_OUTPUT);
- spin_unlock_irqrestore(&uhci->frame_list_lock, flags);
-
- file->private_data = up;
-
- ret = 0;
-out:
- unlock_kernel();
- return ret;
-}
-
-static loff_t uhci_proc_lseek(struct file *file, loff_t off, int whence)
-{
- struct uhci_proc *up = file->private_data;
- loff_t new;
-
- switch (whence) {
- case 0:
- new = off;
- break;
- case 1:
- new = file->f_pos + off;
- break;
- case 2:
- default:
- return -EINVAL;
- }
- if (new < 0 || new > up->size)
- return -EINVAL;
- return (file->f_pos = new);
-}
-
-static ssize_t uhci_proc_read(struct file *file, char *buf, size_t nbytes,
- loff_t *ppos)
-{
- struct uhci_proc *up = file->private_data;
- unsigned int pos;
- unsigned int size;
-
- pos = *ppos;
- size = up->size;
- if (pos >= size)
- return 0;
- if (nbytes >= size)
- nbytes = size;
- if (pos + nbytes > size)
- nbytes = size - pos;
-
- if (!access_ok(VERIFY_WRITE, buf, nbytes))
- return -EINVAL;
-
- copy_to_user(buf, up->data + pos, nbytes);
-
- *ppos += nbytes;
-
- return nbytes;
-}
-
-static int uhci_proc_release(struct inode *inode, struct file *file)
-{
- struct uhci_proc *up = file->private_data;
-
- kfree(up->data);
- kfree(up);
-
- return 0;
-}
-
-static struct file_operations uhci_proc_operations = {
- open: uhci_proc_open,
- llseek: uhci_proc_lseek,
- read: uhci_proc_read,
-// write: uhci_proc_write,
- release: uhci_proc_release,
-};
-#endif
-
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)