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279 lines
7.3 KiB
279 lines
7.3 KiB
/*****************************************************************************
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*
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* COPYRIGHT 1993 - COLORADO MEMORY SYSTEMS, INC.
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* ALL RIGHTS RESERVED.
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*
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******************************************************************************
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*
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* FILE: \SE\DRIVER\DEVICE\JUMBO\SRC\0X1102B.C
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*
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* FUNCTION: cqd_LogicalBOT
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*
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* PURPOSE: Go at high speed to logical BOT. Logical BOT is physical BOT
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* for even numbered tracks and physical EOT for odd numbered tracks.
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*
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* HISTORY:
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* $Log: J:\se.vcs\driver\q117cd\src\0x1102b.c $
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*
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* Rev 1.8 04 Oct 1995 10:58:50 boblehma
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*
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* Rev 1.9 27 Jun 1995 12:35:52 BOBLEHMA
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* Removed call to cqd_PrepareIomega3010PhysRev. Firmware bug is now fixed
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* by calling stop tape instead of pause tape in the cqd_ProcessFRB function.
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*
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* Rev 1.8 30 Jan 1995 14:25:12 BOBLEHMA
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* Changed device_descriptor.version to cqd_context->firmware_version.
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*
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* Rev 1.7 27 Jan 1995 13:22:28 BOBLEHMA
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* Added a call to cqd_PrepareIomega3010PhysRev before the call to
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* the firmware function Physical Reverse. Note that this function
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* is a NOP if the drive is not an Iomega 3010.
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*
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* Rev 1.6 06 Jan 1995 17:08:52 BOBLEHMA
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* Added a check for vendor_id == CMS in addition to the Firmware > 64 test.
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*
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* Rev 1.5 17 Feb 1994 11:35:44 KEVINKES
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*
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* Rev 1.4 18 Jan 1994 16:19:56 KEVINKES
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* Updated debug code.
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*
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* Rev 1.3 20 Dec 1993 14:51:40 KEVINKES
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* Added destination track as an argument.
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*
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* Rev 1.2 23 Nov 1993 18:49:24 KEVINKES
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* Modified CHECKED_DUMP calls for debugging over the serial port.
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*
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* Rev 1.1 08 Nov 1993 14:04:34 KEVINKES
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* Removed all bit-field structures, removed all enumerated types, changed
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* all defines to uppercase, and removed all signed data types wherever
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* possible.
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*
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* Rev 1.0 18 Oct 1993 17:18:52 KEVINKES
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* Initial Revision.
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*
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*****************************************************************************/
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#define FCT_ID 0x1102b
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#include "include\public\adi_api.h"
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#include "include\public\frb_api.h"
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#include "include\public\vendor.h"
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#include "include\private\kdi_pub.h"
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#include "include\private\cqd_pub.h"
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#include "q117cd\include\cqd_defs.h"
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#include "q117cd\include\cqd_strc.h"
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#include "q117cd\include\cqd_hdr.h"
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/*endinclude*/
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dStatus cqd_LogicalBOT
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(
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/* INPUT PARAMETERS: */
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CqdContextPtr cqd_context,
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dUWord destination_track
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/* UPDATE PARAMETERS: */
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/* OUTPUT PARAMETERS: */
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)
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/* COMMENTS: *****************************************************************
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*
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* DEFINITIONS: *************************************************************/
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{
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/* DATA: ********************************************************************/
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dStatus status; /* dStatus or error condition.*/
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dUWord direction; /* tells physical direction of tape movement */
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dUByte ram_byte;
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dSDWord seek_offset=0l;
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/* CODE: ********************************************************************/
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if ((status = cqd_StopTape(cqd_context)) != DONT_PANIC) {
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return status;
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}
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if ((destination_track & ODD_TRACK) == EVEN_TRACK) {
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status = cqd_SendByte(cqd_context, FW_CMD_PHYSICAL_REV);
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direction = REVERSE;
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} else {
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status = cqd_SendByte(cqd_context, FW_CMD_PHYSICAL_FWD);
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direction = FORWARD;
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}
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if (status != DONT_PANIC) {
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return status;
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}
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/* This is part of the Sankyo motor "hack." While the motor is moving */
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/* at high speed to the end of the tape, the driver sets the RAM pointer */
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/* on the 8051 to point to the byte in memory that contains the bit that */
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/* tells whether or not the EOT/BOT sensor is over a hole. This */
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/* concurrent operation is purely for performance enhancement (saves */
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/* ~220 msec). */
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if ((cqd_context->firmware_version == FIRM_VERSION_64) &&
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(cqd_context->device_descriptor.vendor == VENDOR_CMS)) {
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kdi_Sleep(cqd_context->kdi_context, kdi_wt200ms, dFALSE);
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/* Set the ram ptr to the byte with the hole_flag bit. */
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if ((status = cqd_SetRamPtr(
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cqd_context,
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HOLE_FLAG_BYTE_ADDRESS)) != DONT_PANIC) {
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return status;
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}
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}
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if ((status = cqd_WaitCommandComplete(
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cqd_context,
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cqd_context->floppy_tape_parms.time_out[PHYSICAL],
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dFALSE)) != DONT_PANIC) {
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return status;
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}
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if ((cqd_context->firmware_version == FIRM_VERSION_64) &&
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(cqd_context->device_descriptor.vendor == VENDOR_CMS)) {
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/* Prepare the communication cmd_string to read the byte with the */
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/* hole_flag bit in it. */
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/* Wait for the motor to stop. */
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kdi_Sleep(cqd_context->kdi_context, kdi_wt265ms, dFALSE);
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/* Read the byte with the hole flag bit in it. If the bit is 0, */
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/* that means the drive has stopped over a hole. In that case, */
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/* the tape zone counter must be adjusted and written to the drive, */
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/* and the driver saves the day. */
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if ((status = cqd_Report(
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cqd_context,
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FW_CMD_READ_RAM,
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(dUWord *)&ram_byte,
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READ_BYTE,
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dNULL_PTR)) != DONT_PANIC) {
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return status;
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}
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if (!(ram_byte & HOLE_INDICATOR_MASK)) {
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if (direction == REVERSE) {
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/* If at BOT, the only cause for concern is when the EOT/BOT */
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/* sensor is over the rightmost hole of the BOT pair. To */
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/* differentiate this from the case where the sensor is */
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/* sitting over the leftmost hole, read the double hole */
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/* distance counter. If it is non-zero, do nothing. */
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/* Set the ram ptr to 0x3B, the double hole counter. */
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if ( (status = cqd_SetRamPtr(
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cqd_context,
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DOUBLE_HOLE_CNTR_ADDRESS)) != DONT_PANIC) {
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return status;
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}
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/* Read the double hole counter. */
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if ((status = cqd_Report(
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cqd_context,
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FW_CMD_READ_RAM,
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(dUWord *)&ram_byte,
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READ_BYTE,
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dNULL_PTR)) != DONT_PANIC) {
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return status;
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}
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if (!ram_byte) {
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if ((status = cqd_SetRamPtr(
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cqd_context,
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TAPE_ZONE_ADDRESS)) != DONT_PANIC) {
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return status;
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}
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if ((status = cqd_SetRam(
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cqd_context,
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BOT_ZONE_COUNTER)) != DONT_PANIC) {
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return status;
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}
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}
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} else {
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if ((status = cqd_SetRamPtr(
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cqd_context,
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TAPE_ZONE_ADDRESS)) != DONT_PANIC) {
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return status;
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}
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if ((status = cqd_SetRam(
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cqd_context,
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EOT_ZONE_COUNTER)) != DONT_PANIC) {
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return status;
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}
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}
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}
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}
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if ((destination_track & ODD_TRACK) == EVEN_TRACK) {
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if (!cqd_context->rd_wr_op.bot) {
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kdi_CheckedDump(
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QIC117WARN,
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"SeekErr - not at BOT\n", 0l);
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return kdi_Error(ERR_SEEK_FAILED, FCT_ID, ERR_SEQ_1);
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}
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} else {
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if (!cqd_context->rd_wr_op.eot) {
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kdi_CheckedDump(
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QIC117WARN,
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"SeekErr - not at EOT\n", 0l);
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return kdi_Error(ERR_SEEK_FAILED, FCT_ID, ERR_SEQ_2);
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}
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}
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cqd_context->operation_status.current_segment = 0;
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return DONT_PANIC;
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}
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