-/*
- * The SCSI command tracing procedures.
- */
-
-static void ub_cmdtr_new(struct ub_dev *sc, struct ub_scsi_cmd *cmd)
-{
- int n;
- struct ub_scsi_cmd_trace *t;
-
- if ((n = sc->tr.cur + 1) == SCMD_TRACE_SZ) n = 0;
- t = &sc->tr.vec[n];
-
- memset(t, 0, sizeof(struct ub_scsi_cmd_trace));
- t->tag = cmd->tag;
- t->op = cmd->cdb[0];
- t->dir = cmd->dir;
- t->req_size = cmd->len;
- t->st_hst[0] = cmd->state;
-
- sc->tr.cur = n;
- cmd->trace_index = n;
-}
-
-static void ub_cmdtr_state(struct ub_dev *sc, struct ub_scsi_cmd *cmd)
-{
- int n;
- struct ub_scsi_cmd_trace *t;
-
- t = &sc->tr.vec[cmd->trace_index];
- if (t->tag == cmd->tag) {
- if ((n = t->hcur + 1) == SCMD_ST_HIST_SZ) n = 0;
- t->st_hst[n] = cmd->state;
- t->hcur = n;
- }
-}
-
-static void ub_cmdtr_act_len(struct ub_dev *sc, struct ub_scsi_cmd *cmd)
-{
- struct ub_scsi_cmd_trace *t;
-
- t = &sc->tr.vec[cmd->trace_index];
- if (t->tag == cmd->tag)
- t->act_size = cmd->act_len;
-}
-
-static void ub_cmdtr_sense(struct ub_dev *sc, struct ub_scsi_cmd *cmd,
- unsigned char *sense)
-{
- struct ub_scsi_cmd_trace *t;
-
- t = &sc->tr.vec[cmd->trace_index];
- if (t->tag == cmd->tag) {
- t->key = sense[2] & 0x0F;
- t->asc = sense[12];
- t->ascq = sense[13];
- }
-}
-
-static ssize_t ub_diag_show(struct device *dev, struct device_attribute *attr,
- char *page)
-{
- struct usb_interface *intf;
- struct ub_dev *sc;
- struct list_head *p;
- struct ub_lun *lun;
- int cnt;
- unsigned long flags;
- int nc, nh;
- int i, j;
- struct ub_scsi_cmd_trace *t;
-
- intf = to_usb_interface(dev);
- sc = usb_get_intfdata(intf);
- if (sc == NULL)
- return 0;
-
- cnt = 0;
- spin_lock_irqsave(sc->lock, flags);
-
- cnt += sprintf(page + cnt,
- "poison %d reset %d\n",
- atomic_read(&sc->poison), sc->reset);
- cnt += sprintf(page + cnt,
- "qlen %d qmax %d\n",
- sc->cmd_queue.qlen, sc->cmd_queue.qmax);
- cnt += sprintf(page + cnt,
- "sg %d %d %d %d %d .. %d\n",
- sc->sg_stat[0],
- sc->sg_stat[1],
- sc->sg_stat[2],
- sc->sg_stat[3],
- sc->sg_stat[4],
- sc->sg_stat[5]);
-
- list_for_each (p, &sc->luns) {
- lun = list_entry(p, struct ub_lun, link);
- cnt += sprintf(page + cnt,
- "lun %u changed %d removable %d readonly %d\n",
- lun->num, lun->changed, lun->removable, lun->readonly);
- }
-
- if ((nc = sc->tr.cur + 1) == SCMD_TRACE_SZ) nc = 0;
- for (j = 0; j < SCMD_TRACE_SZ; j++) {
- t = &sc->tr.vec[nc];
-
- cnt += sprintf(page + cnt, "%08x %02x", t->tag, t->op);
- if (t->op == REQUEST_SENSE) {
- cnt += sprintf(page + cnt, " [sense %x %02x %02x]",
- t->key, t->asc, t->ascq);
- } else {
- cnt += sprintf(page + cnt, " %c", UB_DIR_CHAR(t->dir));
- cnt += sprintf(page + cnt, " [%5d %5d]",
- t->req_size, t->act_size);
- }
- if ((nh = t->hcur + 1) == SCMD_ST_HIST_SZ) nh = 0;
- for (i = 0; i < SCMD_ST_HIST_SZ; i++) {
- cnt += sprintf(page + cnt, " %s",
- ub_scsi_cmd_stname[(int)t->st_hst[nh]]);
- if (++nh == SCMD_ST_HIST_SZ) nh = 0;
- }
- cnt += sprintf(page + cnt, "\n");
-
- if (++nc == SCMD_TRACE_SZ) nc = 0;
- }
-
- spin_unlock_irqrestore(sc->lock, flags);
- return cnt;
-}
-
-static DEVICE_ATTR(diag, S_IRUGO, ub_diag_show, NULL); /* N.B. World readable */
-