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8e31f1f4d9
- convert to accessors and !use_sg cleanup - Not ready for sg-chaining Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
1353 lines
39 KiB
C
1353 lines
39 KiB
C
/* fd_mcs.c -- Future Domain MCS 600/700 (or IBM OEM) driver
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*
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* FutureDomain MCS-600/700 v0.2 03/11/1998 by ZP Gu (zpg@castle.net)
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*
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* This driver is cloned from fdomain.* to specifically support
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* the Future Domain MCS 600/700 MCA SCSI adapters. Some PS/2s
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* also equipped with IBM Fast SCSI Adapter/A which is an OEM
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* of MCS 700.
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*
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* This driver also supports Reply SB16/SCSI card (the SCSI part).
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*
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* What makes this driver different is that this driver is MCA only
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* and it supports multiple adapters in the same system, IRQ
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* sharing, some driver statistics, and maps highest SCSI id to sda.
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* All cards are auto-detected.
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*
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* Assumptions: TMC-1800/18C50/18C30, BIOS >= 3.4
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*
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* LILO command-line options:
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* fd_mcs=<FIFO_COUNT>[,<FIFO_SIZE>]
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*
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* ********************************************************
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* Please see Copyrights/Comments in fdomain.* for credits.
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* Following is from fdomain.c for acknowledgement:
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*
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* Created: Sun May 3 18:53:19 1992 by faith@cs.unc.edu
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* Revised: Wed Oct 2 11:10:55 1996 by r.faith@ieee.org
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* Author: Rickard E. Faith, faith@cs.unc.edu
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* Copyright 1992, 1993, 1994, 1995, 1996 Rickard E. Faith
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*
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* $Id: fdomain.c,v 5.45 1996/10/02 15:13:06 root Exp $
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2, or (at your option) any
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* later version.
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 675 Mass Ave, Cambridge, MA 02139, USA.
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**************************************************************************
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NOTES ON USER DEFINABLE OPTIONS:
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DEBUG: This turns on the printing of various debug information.
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ENABLE_PARITY: This turns on SCSI parity checking. With the current
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driver, all attached devices must support SCSI parity. If none of your
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devices support parity, then you can probably get the driver to work by
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turning this option off. I have no way of testing this, however, and it
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would appear that no one ever uses this option.
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FIFO_COUNT: The host adapter has an 8K cache (host adapters based on the
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18C30 chip have a 2k cache). When this many 512 byte blocks are filled by
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the SCSI device, an interrupt will be raised. Therefore, this could be as
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low as 0, or as high as 16. Note, however, that values which are too high
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or too low seem to prevent any interrupts from occurring, and thereby lock
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up the machine. I have found that 2 is a good number, but throughput may
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be increased by changing this value to values which are close to 2.
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Please let me know if you try any different values.
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[*****Now a runtime option*****]
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RESELECTION: This is no longer an option, since I gave up trying to
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implement it in version 4.x of this driver. It did not improve
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performance at all and made the driver unstable (because I never found one
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of the two race conditions which were introduced by the multiple
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outstanding command code). The instability seems a very high price to pay
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just so that you don't have to wait for the tape to rewind. If you want
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this feature implemented, send me patches. I'll be happy to send a copy
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of my (broken) driver to anyone who would like to see a copy.
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**************************************************************************/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/blkdev.h>
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#include <linux/errno.h>
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#include <linux/string.h>
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#include <linux/ioport.h>
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#include <linux/proc_fs.h>
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#include <linux/delay.h>
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#include <linux/mca.h>
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#include <linux/spinlock.h>
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#include <scsi/scsicam.h>
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#include <linux/mca-legacy.h>
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#include <asm/io.h>
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#include <asm/system.h>
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#include "scsi.h"
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#include <scsi/scsi_host.h>
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#define DRIVER_VERSION "v0.2 by ZP Gu<zpg@castle.net>"
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/* START OF USER DEFINABLE OPTIONS */
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#define DEBUG 0 /* Enable debugging output */
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#define ENABLE_PARITY 1 /* Enable SCSI Parity */
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/* END OF USER DEFINABLE OPTIONS */
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#if DEBUG
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#define EVERY_ACCESS 0 /* Write a line on every scsi access */
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#define ERRORS_ONLY 1 /* Only write a line if there is an error */
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#define DEBUG_MESSAGES 1 /* Debug MESSAGE IN phase */
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#define DEBUG_ABORT 1 /* Debug abort() routine */
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#define DEBUG_RESET 1 /* Debug reset() routine */
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#define DEBUG_RACE 1 /* Debug interrupt-driven race condition */
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#else
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#define EVERY_ACCESS 0 /* LEAVE THESE ALONE--CHANGE THE ONES ABOVE */
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#define ERRORS_ONLY 0
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#define DEBUG_MESSAGES 0
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#define DEBUG_ABORT 0
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#define DEBUG_RESET 0
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#define DEBUG_RACE 0
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#endif
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/* Errors are reported on the line, so we don't need to report them again */
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#if EVERY_ACCESS
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#undef ERRORS_ONLY
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#define ERRORS_ONLY 0
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#endif
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#if ENABLE_PARITY
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#define PARITY_MASK 0x08
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#else
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#define PARITY_MASK 0x00
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#endif
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enum chip_type {
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unknown = 0x00,
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tmc1800 = 0x01,
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tmc18c50 = 0x02,
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tmc18c30 = 0x03,
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};
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enum {
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in_arbitration = 0x02,
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in_selection = 0x04,
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in_other = 0x08,
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disconnect = 0x10,
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aborted = 0x20,
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sent_ident = 0x40,
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};
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enum in_port_type {
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Read_SCSI_Data = 0,
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SCSI_Status = 1,
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TMC_Status = 2,
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FIFO_Status = 3, /* tmc18c50/tmc18c30 only */
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Interrupt_Cond = 4, /* tmc18c50/tmc18c30 only */
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LSB_ID_Code = 5,
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MSB_ID_Code = 6,
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Read_Loopback = 7,
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SCSI_Data_NoACK = 8,
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Interrupt_Status = 9,
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Configuration1 = 10,
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Configuration2 = 11, /* tmc18c50/tmc18c30 only */
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Read_FIFO = 12,
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FIFO_Data_Count = 14
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};
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enum out_port_type {
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Write_SCSI_Data = 0,
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SCSI_Cntl = 1,
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Interrupt_Cntl = 2,
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SCSI_Mode_Cntl = 3,
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TMC_Cntl = 4,
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Memory_Cntl = 5, /* tmc18c50/tmc18c30 only */
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Write_Loopback = 7,
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IO_Control = 11, /* tmc18c30 only */
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Write_FIFO = 12
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};
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struct fd_hostdata {
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unsigned long _bios_base;
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int _bios_major;
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int _bios_minor;
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volatile int _in_command;
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Scsi_Cmnd *_current_SC;
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enum chip_type _chip;
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int _adapter_mask;
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int _fifo_count; /* Number of 512 byte blocks before INTR */
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char _adapter_name[64];
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#if DEBUG_RACE
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volatile int _in_interrupt_flag;
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#endif
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int _SCSI_Mode_Cntl_port;
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int _FIFO_Data_Count_port;
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int _Interrupt_Cntl_port;
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int _Interrupt_Status_port;
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int _Interrupt_Cond_port;
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int _Read_FIFO_port;
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int _Read_SCSI_Data_port;
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int _SCSI_Cntl_port;
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int _SCSI_Data_NoACK_port;
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int _SCSI_Status_port;
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int _TMC_Cntl_port;
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int _TMC_Status_port;
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int _Write_FIFO_port;
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int _Write_SCSI_Data_port;
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int _FIFO_Size; /* = 0x2000; 8k FIFO for
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pre-tmc18c30 chips */
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/* simple stats */
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int _Bytes_Read;
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int _Bytes_Written;
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int _INTR_Processed;
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};
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#define FD_MAX_HOSTS 3 /* enough? */
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#define HOSTDATA(shpnt) ((struct fd_hostdata *) shpnt->hostdata)
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#define bios_base (HOSTDATA(shpnt)->_bios_base)
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#define bios_major (HOSTDATA(shpnt)->_bios_major)
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#define bios_minor (HOSTDATA(shpnt)->_bios_minor)
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#define in_command (HOSTDATA(shpnt)->_in_command)
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#define current_SC (HOSTDATA(shpnt)->_current_SC)
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#define chip (HOSTDATA(shpnt)->_chip)
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#define adapter_mask (HOSTDATA(shpnt)->_adapter_mask)
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#define FIFO_COUNT (HOSTDATA(shpnt)->_fifo_count)
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#define adapter_name (HOSTDATA(shpnt)->_adapter_name)
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#if DEBUG_RACE
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#define in_interrupt_flag (HOSTDATA(shpnt)->_in_interrupt_flag)
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#endif
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#define SCSI_Mode_Cntl_port (HOSTDATA(shpnt)->_SCSI_Mode_Cntl_port)
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#define FIFO_Data_Count_port (HOSTDATA(shpnt)->_FIFO_Data_Count_port)
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#define Interrupt_Cntl_port (HOSTDATA(shpnt)->_Interrupt_Cntl_port)
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#define Interrupt_Status_port (HOSTDATA(shpnt)->_Interrupt_Status_port)
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#define Interrupt_Cond_port (HOSTDATA(shpnt)->_Interrupt_Cond_port)
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#define Read_FIFO_port (HOSTDATA(shpnt)->_Read_FIFO_port)
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#define Read_SCSI_Data_port (HOSTDATA(shpnt)->_Read_SCSI_Data_port)
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#define SCSI_Cntl_port (HOSTDATA(shpnt)->_SCSI_Cntl_port)
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#define SCSI_Data_NoACK_port (HOSTDATA(shpnt)->_SCSI_Data_NoACK_port)
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#define SCSI_Status_port (HOSTDATA(shpnt)->_SCSI_Status_port)
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#define TMC_Cntl_port (HOSTDATA(shpnt)->_TMC_Cntl_port)
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#define TMC_Status_port (HOSTDATA(shpnt)->_TMC_Status_port)
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#define Write_FIFO_port (HOSTDATA(shpnt)->_Write_FIFO_port)
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#define Write_SCSI_Data_port (HOSTDATA(shpnt)->_Write_SCSI_Data_port)
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#define FIFO_Size (HOSTDATA(shpnt)->_FIFO_Size)
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#define Bytes_Read (HOSTDATA(shpnt)->_Bytes_Read)
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#define Bytes_Written (HOSTDATA(shpnt)->_Bytes_Written)
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#define INTR_Processed (HOSTDATA(shpnt)->_INTR_Processed)
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struct fd_mcs_adapters_struct {
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char *name;
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int id;
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enum chip_type fd_chip;
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int fifo_size;
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int fifo_count;
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};
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#define REPLY_ID 0x5137
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static struct fd_mcs_adapters_struct fd_mcs_adapters[] = {
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{"Future Domain SCSI Adapter MCS-700(18C50)",
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0x60e9,
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tmc18c50,
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0x2000,
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4},
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{"Future Domain SCSI Adapter MCS-600/700(TMC-1800)",
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0x6127,
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tmc1800,
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0x2000,
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4},
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{"Reply Sound Blaster/SCSI Adapter",
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REPLY_ID,
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tmc18c30,
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0x800,
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2},
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};
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#define FD_BRDS ARRAY_SIZE(fd_mcs_adapters)
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static irqreturn_t fd_mcs_intr(int irq, void *dev_id);
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static unsigned long addresses[] = { 0xc8000, 0xca000, 0xce000, 0xde000 };
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static unsigned short ports[] = { 0x140, 0x150, 0x160, 0x170 };
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static unsigned short interrupts[] = { 3, 5, 10, 11, 12, 14, 15, 0 };
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/* host information */
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static int found = 0;
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static struct Scsi_Host *hosts[FD_MAX_HOSTS + 1] = { NULL };
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static int user_fifo_count = 0;
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static int user_fifo_size = 0;
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#ifndef MODULE
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static int __init fd_mcs_setup(char *str)
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{
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static int done_setup = 0;
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int ints[3];
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get_options(str, 3, ints);
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if (done_setup++ || ints[0] < 1 || ints[0] > 2 || ints[1] < 1 || ints[1] > 16) {
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printk("fd_mcs: usage: fd_mcs=FIFO_COUNT, FIFO_SIZE\n");
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return 0;
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}
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user_fifo_count = ints[0] >= 1 ? ints[1] : 0;
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user_fifo_size = ints[0] >= 2 ? ints[2] : 0;
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return 1;
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}
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__setup("fd_mcs=", fd_mcs_setup);
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#endif /* !MODULE */
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static void print_banner(struct Scsi_Host *shpnt)
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{
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printk("scsi%d <fd_mcs>: ", shpnt->host_no);
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if (bios_base) {
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printk("BIOS at 0x%lX", bios_base);
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} else {
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printk("No BIOS");
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}
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printk(", HostID %d, %s Chip, IRQ %d, IO 0x%lX\n", shpnt->this_id, chip == tmc18c50 ? "TMC-18C50" : (chip == tmc18c30 ? "TMC-18C30" : (chip == tmc1800 ? "TMC-1800" : "Unknown")), shpnt->irq, shpnt->io_port);
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}
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static void do_pause(unsigned amount)
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{ /* Pause for amount*10 milliseconds */
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do {
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mdelay(10);
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} while (--amount);
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}
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static void fd_mcs_make_bus_idle(struct Scsi_Host *shpnt)
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{
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outb(0, SCSI_Cntl_port);
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outb(0, SCSI_Mode_Cntl_port);
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if (chip == tmc18c50 || chip == tmc18c30)
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outb(0x21 | PARITY_MASK, TMC_Cntl_port); /* Clear forced intr. */
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else
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outb(0x01 | PARITY_MASK, TMC_Cntl_port);
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}
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static int fd_mcs_detect(struct scsi_host_template * tpnt)
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{
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int loop;
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struct Scsi_Host *shpnt;
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/* get id, port, bios, irq */
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int slot;
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u_char pos2, pos3, pos4;
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int id, port, irq;
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unsigned long bios;
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/* if not MCA machine, return */
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if (!MCA_bus)
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return 0;
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/* changeable? */
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id = 7;
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for (loop = 0; loop < FD_BRDS; loop++) {
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slot = 0;
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while (MCA_NOTFOUND != (slot = mca_find_adapter(fd_mcs_adapters[loop].id, slot))) {
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/* if we get this far, an adapter has been detected and is
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enabled */
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printk(KERN_INFO "scsi <fd_mcs>: %s at slot %d\n", fd_mcs_adapters[loop].name, slot + 1);
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pos2 = mca_read_stored_pos(slot, 2);
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pos3 = mca_read_stored_pos(slot, 3);
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pos4 = mca_read_stored_pos(slot, 4);
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/* ready for next probe */
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slot++;
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if (fd_mcs_adapters[loop].id == REPLY_ID) { /* reply card */
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static int reply_irq[] = { 10, 11, 14, 15 };
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bios = 0; /* no bios */
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if (pos2 & 0x2)
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port = ports[pos4 & 0x3];
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else
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continue;
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/* can't really disable it, same as irq=10 */
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irq = reply_irq[((pos4 >> 2) & 0x1) + 2 * ((pos4 >> 4) & 0x1)];
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} else {
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bios = addresses[pos2 >> 6];
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port = ports[(pos2 >> 4) & 0x03];
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irq = interrupts[(pos2 >> 1) & 0x07];
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}
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if (irq) {
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/* claim the slot */
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mca_set_adapter_name(slot - 1, fd_mcs_adapters[loop].name);
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/* check irq/region */
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if (request_irq(irq, fd_mcs_intr, IRQF_SHARED, "fd_mcs", hosts)) {
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printk(KERN_ERR "fd_mcs: interrupt is not available, skipping...\n");
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continue;
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}
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/* request I/O region */
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if (request_region(port, 0x10, "fd_mcs")) {
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printk(KERN_ERR "fd_mcs: I/O region is already in use, skipping...\n");
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continue;
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}
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/* register */
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if (!(shpnt = scsi_register(tpnt, sizeof(struct fd_hostdata)))) {
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printk(KERN_ERR "fd_mcs: scsi_register() failed\n");
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release_region(port, 0x10);
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free_irq(irq, hosts);
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continue;
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}
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/* save name */
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strcpy(adapter_name, fd_mcs_adapters[loop].name);
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/* chip/fifo */
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chip = fd_mcs_adapters[loop].fd_chip;
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/* use boot time value if available */
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FIFO_COUNT = user_fifo_count ? user_fifo_count : fd_mcs_adapters[loop].fifo_count;
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FIFO_Size = user_fifo_size ? user_fifo_size : fd_mcs_adapters[loop].fifo_size;
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/* FIXME: Do we need to keep this bit of code inside NOT_USED around at all? */
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#ifdef NOT_USED
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/* *************************************************** */
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/* Try to toggle 32-bit mode. This only
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works on an 18c30 chip. (User reports
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say this works, so we should switch to
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it in the near future.) */
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outb(0x80, port + IO_Control);
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if ((inb(port + Configuration2) & 0x80) == 0x80) {
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outb(0x00, port + IO_Control);
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if ((inb(port + Configuration2) & 0x80) == 0x00) {
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chip = tmc18c30;
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FIFO_Size = 0x800; /* 2k FIFO */
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printk("FIRST: chip=%s, fifo_size=0x%x\n", (chip == tmc18c30) ? "tmc18c30" : "tmc18c50", FIFO_Size);
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}
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}
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/* That should have worked, but appears to
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have problems. Let's assume it is an
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18c30 if the RAM is disabled. */
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if (inb(port + Configuration2) & 0x02) {
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chip = tmc18c30;
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FIFO_Size = 0x800; /* 2k FIFO */
|
|
|
|
printk("SECOND: chip=%s, fifo_size=0x%x\n", (chip == tmc18c30) ? "tmc18c30" : "tmc18c50", FIFO_Size);
|
|
}
|
|
/* *************************************************** */
|
|
#endif
|
|
|
|
/* IBM/ANSI scsi scan ordering */
|
|
/* Stick this back in when the scsi.c changes are there */
|
|
shpnt->reverse_ordering = 1;
|
|
|
|
|
|
/* saving info */
|
|
hosts[found++] = shpnt;
|
|
|
|
shpnt->this_id = id;
|
|
shpnt->irq = irq;
|
|
shpnt->io_port = port;
|
|
shpnt->n_io_port = 0x10;
|
|
|
|
/* save */
|
|
bios_base = bios;
|
|
adapter_mask = (1 << id);
|
|
|
|
/* save more */
|
|
SCSI_Mode_Cntl_port = port + SCSI_Mode_Cntl;
|
|
FIFO_Data_Count_port = port + FIFO_Data_Count;
|
|
Interrupt_Cntl_port = port + Interrupt_Cntl;
|
|
Interrupt_Status_port = port + Interrupt_Status;
|
|
Interrupt_Cond_port = port + Interrupt_Cond;
|
|
Read_FIFO_port = port + Read_FIFO;
|
|
Read_SCSI_Data_port = port + Read_SCSI_Data;
|
|
SCSI_Cntl_port = port + SCSI_Cntl;
|
|
SCSI_Data_NoACK_port = port + SCSI_Data_NoACK;
|
|
SCSI_Status_port = port + SCSI_Status;
|
|
TMC_Cntl_port = port + TMC_Cntl;
|
|
TMC_Status_port = port + TMC_Status;
|
|
Write_FIFO_port = port + Write_FIFO;
|
|
Write_SCSI_Data_port = port + Write_SCSI_Data;
|
|
|
|
Bytes_Read = 0;
|
|
Bytes_Written = 0;
|
|
INTR_Processed = 0;
|
|
|
|
/* say something */
|
|
print_banner(shpnt);
|
|
|
|
/* reset */
|
|
outb(1, SCSI_Cntl_port);
|
|
do_pause(2);
|
|
outb(0, SCSI_Cntl_port);
|
|
do_pause(115);
|
|
outb(0, SCSI_Mode_Cntl_port);
|
|
outb(PARITY_MASK, TMC_Cntl_port);
|
|
/* done reset */
|
|
}
|
|
}
|
|
|
|
if (found == FD_MAX_HOSTS) {
|
|
printk("fd_mcs: detecting reached max=%d host adapters.\n", FD_MAX_HOSTS);
|
|
break;
|
|
}
|
|
}
|
|
|
|
return found;
|
|
}
|
|
|
|
static const char *fd_mcs_info(struct Scsi_Host *shpnt)
|
|
{
|
|
return adapter_name;
|
|
}
|
|
|
|
static int TOTAL_INTR = 0;
|
|
|
|
/*
|
|
* inout : decides on the direction of the dataflow and the meaning of the
|
|
* variables
|
|
* buffer: If inout==FALSE data is being written to it else read from it
|
|
* *start: If inout==FALSE start of the valid data in the buffer
|
|
* offset: If inout==FALSE offset from the beginning of the imaginary file
|
|
* from which we start writing into the buffer
|
|
* length: If inout==FALSE max number of bytes to be written into the buffer
|
|
* else number of bytes in the buffer
|
|
*/
|
|
static int fd_mcs_proc_info(struct Scsi_Host *shpnt, char *buffer, char **start, off_t offset, int length, int inout)
|
|
{
|
|
int len = 0;
|
|
|
|
if (inout)
|
|
return (-ENOSYS);
|
|
|
|
*start = buffer + offset;
|
|
|
|
len += sprintf(buffer + len, "Future Domain MCS-600/700 Driver %s\n", DRIVER_VERSION);
|
|
len += sprintf(buffer + len, "HOST #%d: %s\n", shpnt->host_no, adapter_name);
|
|
len += sprintf(buffer + len, "FIFO Size=0x%x, FIFO Count=%d\n", FIFO_Size, FIFO_COUNT);
|
|
len += sprintf(buffer + len, "DriverCalls=%d, Interrupts=%d, BytesRead=%d, BytesWrite=%d\n\n", TOTAL_INTR, INTR_Processed, Bytes_Read, Bytes_Written);
|
|
|
|
if ((len -= offset) <= 0)
|
|
return 0;
|
|
if (len > length)
|
|
len = length;
|
|
return len;
|
|
}
|
|
|
|
static int fd_mcs_select(struct Scsi_Host *shpnt, int target)
|
|
{
|
|
int status;
|
|
unsigned long timeout;
|
|
|
|
outb(0x82, SCSI_Cntl_port); /* Bus Enable + Select */
|
|
outb(adapter_mask | (1 << target), SCSI_Data_NoACK_port);
|
|
|
|
/* Stop arbitration and enable parity */
|
|
outb(PARITY_MASK, TMC_Cntl_port);
|
|
|
|
timeout = 350; /* 350mS -- because of timeouts
|
|
(was 250mS) */
|
|
|
|
do {
|
|
status = inb(SCSI_Status_port); /* Read adapter status */
|
|
if (status & 1) { /* Busy asserted */
|
|
/* Enable SCSI Bus (on error, should make bus idle with 0) */
|
|
outb(0x80, SCSI_Cntl_port);
|
|
return 0;
|
|
}
|
|
udelay(1000); /* wait one msec */
|
|
} while (--timeout);
|
|
|
|
/* Make bus idle */
|
|
fd_mcs_make_bus_idle(shpnt);
|
|
#if EVERY_ACCESS
|
|
if (!target)
|
|
printk("Selection failed\n");
|
|
#endif
|
|
#if ERRORS_ONLY
|
|
if (!target) {
|
|
static int flag = 0;
|
|
|
|
if (!flag) /* Skip first failure for all chips. */
|
|
++flag;
|
|
else
|
|
printk("fd_mcs: Selection failed\n");
|
|
}
|
|
#endif
|
|
return 1;
|
|
}
|
|
|
|
static void my_done(struct Scsi_Host *shpnt, int error)
|
|
{
|
|
if (in_command) {
|
|
in_command = 0;
|
|
outb(0x00, Interrupt_Cntl_port);
|
|
fd_mcs_make_bus_idle(shpnt);
|
|
current_SC->result = error;
|
|
current_SC->scsi_done(current_SC);
|
|
} else {
|
|
panic("fd_mcs: my_done() called outside of command\n");
|
|
}
|
|
#if DEBUG_RACE
|
|
in_interrupt_flag = 0;
|
|
#endif
|
|
}
|
|
|
|
/* only my_done needs to be protected */
|
|
static irqreturn_t fd_mcs_intr(int irq, void *dev_id)
|
|
{
|
|
unsigned long flags;
|
|
int status;
|
|
int done = 0;
|
|
unsigned data_count, tmp_count;
|
|
|
|
int i = 0;
|
|
struct Scsi_Host *shpnt;
|
|
|
|
TOTAL_INTR++;
|
|
|
|
/* search for one adapter-response on shared interrupt */
|
|
while ((shpnt = hosts[i++])) {
|
|
if ((inb(TMC_Status_port)) & 1)
|
|
break;
|
|
}
|
|
|
|
/* return if some other device on this IRQ caused the interrupt */
|
|
if (!shpnt) {
|
|
return IRQ_NONE;
|
|
}
|
|
|
|
INTR_Processed++;
|
|
|
|
outb(0x00, Interrupt_Cntl_port);
|
|
|
|
/* Abort calls my_done, so we do nothing here. */
|
|
if (current_SC->SCp.phase & aborted) {
|
|
#if DEBUG_ABORT
|
|
printk("Interrupt after abort, ignoring\n");
|
|
#endif
|
|
/* return IRQ_HANDLED; */
|
|
}
|
|
#if DEBUG_RACE
|
|
++in_interrupt_flag;
|
|
#endif
|
|
|
|
if (current_SC->SCp.phase & in_arbitration) {
|
|
status = inb(TMC_Status_port); /* Read adapter status */
|
|
if (!(status & 0x02)) {
|
|
#if EVERY_ACCESS
|
|
printk(" AFAIL ");
|
|
#endif
|
|
spin_lock_irqsave(shpnt->host_lock, flags);
|
|
my_done(shpnt, DID_BUS_BUSY << 16);
|
|
spin_unlock_irqrestore(shpnt->host_lock, flags);
|
|
return IRQ_HANDLED;
|
|
}
|
|
current_SC->SCp.phase = in_selection;
|
|
|
|
outb(0x40 | FIFO_COUNT, Interrupt_Cntl_port);
|
|
|
|
outb(0x82, SCSI_Cntl_port); /* Bus Enable + Select */
|
|
outb(adapter_mask | (1 << scmd_id(current_SC)), SCSI_Data_NoACK_port);
|
|
|
|
/* Stop arbitration and enable parity */
|
|
outb(0x10 | PARITY_MASK, TMC_Cntl_port);
|
|
#if DEBUG_RACE
|
|
in_interrupt_flag = 0;
|
|
#endif
|
|
return IRQ_HANDLED;
|
|
} else if (current_SC->SCp.phase & in_selection) {
|
|
status = inb(SCSI_Status_port);
|
|
if (!(status & 0x01)) {
|
|
/* Try again, for slow devices */
|
|
if (fd_mcs_select(shpnt, scmd_id(current_SC))) {
|
|
#if EVERY_ACCESS
|
|
printk(" SFAIL ");
|
|
#endif
|
|
spin_lock_irqsave(shpnt->host_lock, flags);
|
|
my_done(shpnt, DID_NO_CONNECT << 16);
|
|
spin_unlock_irqrestore(shpnt->host_lock, flags);
|
|
return IRQ_HANDLED;
|
|
} else {
|
|
#if EVERY_ACCESS
|
|
printk(" AltSel ");
|
|
#endif
|
|
/* Stop arbitration and enable parity */
|
|
outb(0x10 | PARITY_MASK, TMC_Cntl_port);
|
|
}
|
|
}
|
|
current_SC->SCp.phase = in_other;
|
|
outb(0x90 | FIFO_COUNT, Interrupt_Cntl_port);
|
|
outb(0x80, SCSI_Cntl_port);
|
|
#if DEBUG_RACE
|
|
in_interrupt_flag = 0;
|
|
#endif
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
/* current_SC->SCp.phase == in_other: this is the body of the routine */
|
|
|
|
status = inb(SCSI_Status_port);
|
|
|
|
if (status & 0x10) { /* REQ */
|
|
|
|
switch (status & 0x0e) {
|
|
|
|
case 0x08: /* COMMAND OUT */
|
|
outb(current_SC->cmnd[current_SC->SCp.sent_command++], Write_SCSI_Data_port);
|
|
#if EVERY_ACCESS
|
|
printk("CMD = %x,", current_SC->cmnd[current_SC->SCp.sent_command - 1]);
|
|
#endif
|
|
break;
|
|
case 0x00: /* DATA OUT -- tmc18c50/tmc18c30 only */
|
|
if (chip != tmc1800 && !current_SC->SCp.have_data_in) {
|
|
current_SC->SCp.have_data_in = -1;
|
|
outb(0xd0 | PARITY_MASK, TMC_Cntl_port);
|
|
}
|
|
break;
|
|
case 0x04: /* DATA IN -- tmc18c50/tmc18c30 only */
|
|
if (chip != tmc1800 && !current_SC->SCp.have_data_in) {
|
|
current_SC->SCp.have_data_in = 1;
|
|
outb(0x90 | PARITY_MASK, TMC_Cntl_port);
|
|
}
|
|
break;
|
|
case 0x0c: /* STATUS IN */
|
|
current_SC->SCp.Status = inb(Read_SCSI_Data_port);
|
|
#if EVERY_ACCESS
|
|
printk("Status = %x, ", current_SC->SCp.Status);
|
|
#endif
|
|
#if ERRORS_ONLY
|
|
if (current_SC->SCp.Status && current_SC->SCp.Status != 2 && current_SC->SCp.Status != 8) {
|
|
printk("ERROR fd_mcs: target = %d, command = %x, status = %x\n", current_SC->device->id, current_SC->cmnd[0], current_SC->SCp.Status);
|
|
}
|
|
#endif
|
|
break;
|
|
case 0x0a: /* MESSAGE OUT */
|
|
outb(MESSAGE_REJECT, Write_SCSI_Data_port); /* Reject */
|
|
break;
|
|
case 0x0e: /* MESSAGE IN */
|
|
current_SC->SCp.Message = inb(Read_SCSI_Data_port);
|
|
#if EVERY_ACCESS
|
|
printk("Message = %x, ", current_SC->SCp.Message);
|
|
#endif
|
|
if (!current_SC->SCp.Message)
|
|
++done;
|
|
#if DEBUG_MESSAGES || EVERY_ACCESS
|
|
if (current_SC->SCp.Message) {
|
|
printk("fd_mcs: message = %x\n", current_SC->SCp.Message);
|
|
}
|
|
#endif
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (chip == tmc1800 && !current_SC->SCp.have_data_in && (current_SC->SCp.sent_command >= current_SC->cmd_len)) {
|
|
/* We have to get the FIFO direction
|
|
correct, so I've made a table based
|
|
on the SCSI Standard of which commands
|
|
appear to require a DATA OUT phase.
|
|
*/
|
|
/*
|
|
p. 94: Command for all device types
|
|
CHANGE DEFINITION 40 DATA OUT
|
|
COMPARE 39 DATA OUT
|
|
COPY 18 DATA OUT
|
|
COPY AND VERIFY 3a DATA OUT
|
|
INQUIRY 12
|
|
LOG SELECT 4c DATA OUT
|
|
LOG SENSE 4d
|
|
MODE SELECT (6) 15 DATA OUT
|
|
MODE SELECT (10) 55 DATA OUT
|
|
MODE SENSE (6) 1a
|
|
MODE SENSE (10) 5a
|
|
READ BUFFER 3c
|
|
RECEIVE DIAGNOSTIC RESULTS 1c
|
|
REQUEST SENSE 03
|
|
SEND DIAGNOSTIC 1d DATA OUT
|
|
TEST UNIT READY 00
|
|
WRITE BUFFER 3b DATA OUT
|
|
|
|
p.178: Commands for direct-access devices (not listed on p. 94)
|
|
FORMAT UNIT 04 DATA OUT
|
|
LOCK-UNLOCK CACHE 36
|
|
PRE-FETCH 34
|
|
PREVENT-ALLOW MEDIUM REMOVAL 1e
|
|
READ (6)/RECEIVE 08
|
|
READ (10) 3c
|
|
READ CAPACITY 25
|
|
READ DEFECT DATA (10) 37
|
|
READ LONG 3e
|
|
REASSIGN BLOCKS 07 DATA OUT
|
|
RELEASE 17
|
|
RESERVE 16 DATA OUT
|
|
REZERO UNIT/REWIND 01
|
|
SEARCH DATA EQUAL (10) 31 DATA OUT
|
|
SEARCH DATA HIGH (10) 30 DATA OUT
|
|
SEARCH DATA LOW (10) 32 DATA OUT
|
|
SEEK (6) 0b
|
|
SEEK (10) 2b
|
|
SET LIMITS (10) 33
|
|
START STOP UNIT 1b
|
|
SYNCHRONIZE CACHE 35
|
|
VERIFY (10) 2f
|
|
WRITE (6)/PRINT/SEND 0a DATA OUT
|
|
WRITE (10)/SEND 2a DATA OUT
|
|
WRITE AND VERIFY (10) 2e DATA OUT
|
|
WRITE LONG 3f DATA OUT
|
|
WRITE SAME 41 DATA OUT ?
|
|
|
|
p. 261: Commands for sequential-access devices (not previously listed)
|
|
ERASE 19
|
|
LOAD UNLOAD 1b
|
|
LOCATE 2b
|
|
READ BLOCK LIMITS 05
|
|
READ POSITION 34
|
|
READ REVERSE 0f
|
|
RECOVER BUFFERED DATA 14
|
|
SPACE 11
|
|
WRITE FILEMARKS 10 ?
|
|
|
|
p. 298: Commands for printer devices (not previously listed)
|
|
****** NOT SUPPORTED BY THIS DRIVER, since 0b is SEEK (6) *****
|
|
SLEW AND PRINT 0b DATA OUT -- same as seek
|
|
STOP PRINT 1b
|
|
SYNCHRONIZE BUFFER 10
|
|
|
|
p. 315: Commands for processor devices (not previously listed)
|
|
|
|
p. 321: Commands for write-once devices (not previously listed)
|
|
MEDIUM SCAN 38
|
|
READ (12) a8
|
|
SEARCH DATA EQUAL (12) b1 DATA OUT
|
|
SEARCH DATA HIGH (12) b0 DATA OUT
|
|
SEARCH DATA LOW (12) b2 DATA OUT
|
|
SET LIMITS (12) b3
|
|
VERIFY (12) af
|
|
WRITE (12) aa DATA OUT
|
|
WRITE AND VERIFY (12) ae DATA OUT
|
|
|
|
p. 332: Commands for CD-ROM devices (not previously listed)
|
|
PAUSE/RESUME 4b
|
|
PLAY AUDIO (10) 45
|
|
PLAY AUDIO (12) a5
|
|
PLAY AUDIO MSF 47
|
|
PLAY TRACK RELATIVE (10) 49
|
|
PLAY TRACK RELATIVE (12) a9
|
|
READ HEADER 44
|
|
READ SUB-CHANNEL 42
|
|
READ TOC 43
|
|
|
|
p. 370: Commands for scanner devices (not previously listed)
|
|
GET DATA BUFFER STATUS 34
|
|
GET WINDOW 25
|
|
OBJECT POSITION 31
|
|
SCAN 1b
|
|
SET WINDOW 24 DATA OUT
|
|
|
|
p. 391: Commands for optical memory devices (not listed)
|
|
ERASE (10) 2c
|
|
ERASE (12) ac
|
|
MEDIUM SCAN 38 DATA OUT
|
|
READ DEFECT DATA (12) b7
|
|
READ GENERATION 29
|
|
READ UPDATED BLOCK 2d
|
|
UPDATE BLOCK 3d DATA OUT
|
|
|
|
p. 419: Commands for medium changer devices (not listed)
|
|
EXCHANGE MEDIUM 46
|
|
INITIALIZE ELEMENT STATUS 07
|
|
MOVE MEDIUM a5
|
|
POSITION TO ELEMENT 2b
|
|
READ ELEMENT STATUS b8
|
|
REQUEST VOL. ELEMENT ADDRESS b5
|
|
SEND VOLUME TAG b6 DATA OUT
|
|
|
|
p. 454: Commands for communications devices (not listed previously)
|
|
GET MESSAGE (6) 08
|
|
GET MESSAGE (10) 28
|
|
GET MESSAGE (12) a8
|
|
*/
|
|
|
|
switch (current_SC->cmnd[0]) {
|
|
case CHANGE_DEFINITION:
|
|
case COMPARE:
|
|
case COPY:
|
|
case COPY_VERIFY:
|
|
case LOG_SELECT:
|
|
case MODE_SELECT:
|
|
case MODE_SELECT_10:
|
|
case SEND_DIAGNOSTIC:
|
|
case WRITE_BUFFER:
|
|
|
|
case FORMAT_UNIT:
|
|
case REASSIGN_BLOCKS:
|
|
case RESERVE:
|
|
case SEARCH_EQUAL:
|
|
case SEARCH_HIGH:
|
|
case SEARCH_LOW:
|
|
case WRITE_6:
|
|
case WRITE_10:
|
|
case WRITE_VERIFY:
|
|
case 0x3f:
|
|
case 0x41:
|
|
|
|
case 0xb1:
|
|
case 0xb0:
|
|
case 0xb2:
|
|
case 0xaa:
|
|
case 0xae:
|
|
|
|
case 0x24:
|
|
|
|
case 0x38:
|
|
case 0x3d:
|
|
|
|
case 0xb6:
|
|
|
|
case 0xea: /* alternate number for WRITE LONG */
|
|
|
|
current_SC->SCp.have_data_in = -1;
|
|
outb(0xd0 | PARITY_MASK, TMC_Cntl_port);
|
|
break;
|
|
|
|
case 0x00:
|
|
default:
|
|
|
|
current_SC->SCp.have_data_in = 1;
|
|
outb(0x90 | PARITY_MASK, TMC_Cntl_port);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (current_SC->SCp.have_data_in == -1) { /* DATA OUT */
|
|
while ((data_count = FIFO_Size - inw(FIFO_Data_Count_port)) > 512) {
|
|
#if EVERY_ACCESS
|
|
printk("DC=%d, ", data_count);
|
|
#endif
|
|
if (data_count > current_SC->SCp.this_residual)
|
|
data_count = current_SC->SCp.this_residual;
|
|
if (data_count > 0) {
|
|
#if EVERY_ACCESS
|
|
printk("%d OUT, ", data_count);
|
|
#endif
|
|
if (data_count == 1) {
|
|
Bytes_Written++;
|
|
|
|
outb(*current_SC->SCp.ptr++, Write_FIFO_port);
|
|
--current_SC->SCp.this_residual;
|
|
} else {
|
|
data_count >>= 1;
|
|
tmp_count = data_count << 1;
|
|
outsw(Write_FIFO_port, current_SC->SCp.ptr, data_count);
|
|
current_SC->SCp.ptr += tmp_count;
|
|
Bytes_Written += tmp_count;
|
|
current_SC->SCp.this_residual -= tmp_count;
|
|
}
|
|
}
|
|
if (!current_SC->SCp.this_residual) {
|
|
if (current_SC->SCp.buffers_residual) {
|
|
--current_SC->SCp.buffers_residual;
|
|
++current_SC->SCp.buffer;
|
|
current_SC->SCp.ptr = sg_virt(current_SC->SCp.buffer);
|
|
current_SC->SCp.this_residual = current_SC->SCp.buffer->length;
|
|
} else
|
|
break;
|
|
}
|
|
}
|
|
} else if (current_SC->SCp.have_data_in == 1) { /* DATA IN */
|
|
while ((data_count = inw(FIFO_Data_Count_port)) > 0) {
|
|
#if EVERY_ACCESS
|
|
printk("DC=%d, ", data_count);
|
|
#endif
|
|
if (data_count > current_SC->SCp.this_residual)
|
|
data_count = current_SC->SCp.this_residual;
|
|
if (data_count) {
|
|
#if EVERY_ACCESS
|
|
printk("%d IN, ", data_count);
|
|
#endif
|
|
if (data_count == 1) {
|
|
Bytes_Read++;
|
|
*current_SC->SCp.ptr++ = inb(Read_FIFO_port);
|
|
--current_SC->SCp.this_residual;
|
|
} else {
|
|
data_count >>= 1; /* Number of words */
|
|
tmp_count = data_count << 1;
|
|
insw(Read_FIFO_port, current_SC->SCp.ptr, data_count);
|
|
current_SC->SCp.ptr += tmp_count;
|
|
Bytes_Read += tmp_count;
|
|
current_SC->SCp.this_residual -= tmp_count;
|
|
}
|
|
}
|
|
if (!current_SC->SCp.this_residual && current_SC->SCp.buffers_residual) {
|
|
--current_SC->SCp.buffers_residual;
|
|
++current_SC->SCp.buffer;
|
|
current_SC->SCp.ptr = sg_virt(current_SC->SCp.buffer);
|
|
current_SC->SCp.this_residual = current_SC->SCp.buffer->length;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (done) {
|
|
#if EVERY_ACCESS
|
|
printk(" ** IN DONE %d ** ", current_SC->SCp.have_data_in);
|
|
#endif
|
|
|
|
#if EVERY_ACCESS
|
|
printk("BEFORE MY_DONE. . .");
|
|
#endif
|
|
spin_lock_irqsave(shpnt->host_lock, flags);
|
|
my_done(shpnt, (current_SC->SCp.Status & 0xff)
|
|
| ((current_SC->SCp.Message & 0xff) << 8) | (DID_OK << 16));
|
|
spin_unlock_irqrestore(shpnt->host_lock, flags);
|
|
#if EVERY_ACCESS
|
|
printk("RETURNING.\n");
|
|
#endif
|
|
|
|
} else {
|
|
if (current_SC->SCp.phase & disconnect) {
|
|
outb(0xd0 | FIFO_COUNT, Interrupt_Cntl_port);
|
|
outb(0x00, SCSI_Cntl_port);
|
|
} else {
|
|
outb(0x90 | FIFO_COUNT, Interrupt_Cntl_port);
|
|
}
|
|
}
|
|
#if DEBUG_RACE
|
|
in_interrupt_flag = 0;
|
|
#endif
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static int fd_mcs_release(struct Scsi_Host *shpnt)
|
|
{
|
|
int i, this_host, irq_usage;
|
|
|
|
release_region(shpnt->io_port, shpnt->n_io_port);
|
|
|
|
this_host = -1;
|
|
irq_usage = 0;
|
|
for (i = 0; i < found; i++) {
|
|
if (shpnt == hosts[i])
|
|
this_host = i;
|
|
if (shpnt->irq == hosts[i]->irq)
|
|
irq_usage++;
|
|
}
|
|
|
|
/* only for the last one */
|
|
if (1 == irq_usage)
|
|
free_irq(shpnt->irq, hosts);
|
|
|
|
found--;
|
|
|
|
for (i = this_host; i < found; i++)
|
|
hosts[i] = hosts[i + 1];
|
|
|
|
hosts[found] = NULL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int fd_mcs_queue(Scsi_Cmnd * SCpnt, void (*done) (Scsi_Cmnd *))
|
|
{
|
|
struct Scsi_Host *shpnt = SCpnt->device->host;
|
|
|
|
if (in_command) {
|
|
panic("fd_mcs: fd_mcs_queue() NOT REENTRANT!\n");
|
|
}
|
|
#if EVERY_ACCESS
|
|
printk("queue: target = %d cmnd = 0x%02x pieces = %d size = %u\n",
|
|
SCpnt->target, *(unsigned char *) SCpnt->cmnd,
|
|
scsi_sg_count(SCpnt), scsi_bufflen(SCpnt));
|
|
#endif
|
|
|
|
fd_mcs_make_bus_idle(shpnt);
|
|
|
|
SCpnt->scsi_done = done; /* Save this for the done function */
|
|
current_SC = SCpnt;
|
|
|
|
/* Initialize static data */
|
|
|
|
if (scsi_bufflen(current_SC)) {
|
|
current_SC->SCp.buffer = scsi_sglist(current_SC);
|
|
current_SC->SCp.ptr = sg_virt(current_SC->SCp.buffer);
|
|
current_SC->SCp.this_residual = current_SC->SCp.buffer->length;
|
|
current_SC->SCp.buffers_residual = scsi_sg_count(current_SC) - 1;
|
|
} else {
|
|
current_SC->SCp.ptr = NULL;
|
|
current_SC->SCp.this_residual = 0;
|
|
current_SC->SCp.buffer = NULL;
|
|
current_SC->SCp.buffers_residual = 0;
|
|
}
|
|
|
|
|
|
current_SC->SCp.Status = 0;
|
|
current_SC->SCp.Message = 0;
|
|
current_SC->SCp.have_data_in = 0;
|
|
current_SC->SCp.sent_command = 0;
|
|
current_SC->SCp.phase = in_arbitration;
|
|
|
|
/* Start arbitration */
|
|
outb(0x00, Interrupt_Cntl_port);
|
|
outb(0x00, SCSI_Cntl_port); /* Disable data drivers */
|
|
outb(adapter_mask, SCSI_Data_NoACK_port); /* Set our id bit */
|
|
in_command = 1;
|
|
outb(0x20, Interrupt_Cntl_port);
|
|
outb(0x14 | PARITY_MASK, TMC_Cntl_port); /* Start arbitration */
|
|
|
|
return 0;
|
|
}
|
|
|
|
#if DEBUG_ABORT || DEBUG_RESET
|
|
static void fd_mcs_print_info(Scsi_Cmnd * SCpnt)
|
|
{
|
|
unsigned int imr;
|
|
unsigned int irr;
|
|
unsigned int isr;
|
|
struct Scsi_Host *shpnt = SCpnt->host;
|
|
|
|
if (!SCpnt || !SCpnt->host) {
|
|
printk("fd_mcs: cannot provide detailed information\n");
|
|
}
|
|
|
|
printk("%s\n", fd_mcs_info(SCpnt->host));
|
|
print_banner(SCpnt->host);
|
|
switch (SCpnt->SCp.phase) {
|
|
case in_arbitration:
|
|
printk("arbitration ");
|
|
break;
|
|
case in_selection:
|
|
printk("selection ");
|
|
break;
|
|
case in_other:
|
|
printk("other ");
|
|
break;
|
|
default:
|
|
printk("unknown ");
|
|
break;
|
|
}
|
|
|
|
printk("(%d), target = %d cmnd = 0x%02x pieces = %d size = %u\n",
|
|
SCpnt->SCp.phase, SCpnt->device->id, *(unsigned char *) SCpnt->cmnd,
|
|
scsi_sg_count(SCpnt), scsi_bufflen(SCpnt));
|
|
printk("sent_command = %d, have_data_in = %d, timeout = %d\n", SCpnt->SCp.sent_command, SCpnt->SCp.have_data_in, SCpnt->timeout);
|
|
#if DEBUG_RACE
|
|
printk("in_interrupt_flag = %d\n", in_interrupt_flag);
|
|
#endif
|
|
|
|
imr = (inb(0x0a1) << 8) + inb(0x21);
|
|
outb(0x0a, 0xa0);
|
|
irr = inb(0xa0) << 8;
|
|
outb(0x0a, 0x20);
|
|
irr += inb(0x20);
|
|
outb(0x0b, 0xa0);
|
|
isr = inb(0xa0) << 8;
|
|
outb(0x0b, 0x20);
|
|
isr += inb(0x20);
|
|
|
|
/* Print out interesting information */
|
|
printk("IMR = 0x%04x", imr);
|
|
if (imr & (1 << shpnt->irq))
|
|
printk(" (masked)");
|
|
printk(", IRR = 0x%04x, ISR = 0x%04x\n", irr, isr);
|
|
|
|
printk("SCSI Status = 0x%02x\n", inb(SCSI_Status_port));
|
|
printk("TMC Status = 0x%02x", inb(TMC_Status_port));
|
|
if (inb(TMC_Status_port) & 1)
|
|
printk(" (interrupt)");
|
|
printk("\n");
|
|
printk("Interrupt Status = 0x%02x", inb(Interrupt_Status_port));
|
|
if (inb(Interrupt_Status_port) & 0x08)
|
|
printk(" (enabled)");
|
|
printk("\n");
|
|
if (chip == tmc18c50 || chip == tmc18c30) {
|
|
printk("FIFO Status = 0x%02x\n", inb(shpnt->io_port + FIFO_Status));
|
|
printk("Int. Condition = 0x%02x\n", inb(shpnt->io_port + Interrupt_Cond));
|
|
}
|
|
printk("Configuration 1 = 0x%02x\n", inb(shpnt->io_port + Configuration1));
|
|
if (chip == tmc18c50 || chip == tmc18c30)
|
|
printk("Configuration 2 = 0x%02x\n", inb(shpnt->io_port + Configuration2));
|
|
}
|
|
#endif
|
|
|
|
static int fd_mcs_abort(Scsi_Cmnd * SCpnt)
|
|
{
|
|
struct Scsi_Host *shpnt = SCpnt->device->host;
|
|
|
|
unsigned long flags;
|
|
#if EVERY_ACCESS || ERRORS_ONLY || DEBUG_ABORT
|
|
printk("fd_mcs: abort ");
|
|
#endif
|
|
|
|
spin_lock_irqsave(shpnt->host_lock, flags);
|
|
if (!in_command) {
|
|
#if EVERY_ACCESS || ERRORS_ONLY
|
|
printk(" (not in command)\n");
|
|
#endif
|
|
spin_unlock_irqrestore(shpnt->host_lock, flags);
|
|
return FAILED;
|
|
} else
|
|
printk("\n");
|
|
|
|
#if DEBUG_ABORT
|
|
fd_mcs_print_info(SCpnt);
|
|
#endif
|
|
|
|
fd_mcs_make_bus_idle(shpnt);
|
|
|
|
current_SC->SCp.phase |= aborted;
|
|
|
|
current_SC->result = DID_ABORT << 16;
|
|
|
|
/* Aborts are not done well. . . */
|
|
my_done(shpnt, DID_ABORT << 16);
|
|
|
|
spin_unlock_irqrestore(shpnt->host_lock, flags);
|
|
return SUCCESS;
|
|
}
|
|
|
|
static int fd_mcs_bus_reset(Scsi_Cmnd * SCpnt) {
|
|
struct Scsi_Host *shpnt = SCpnt->device->host;
|
|
unsigned long flags;
|
|
|
|
#if DEBUG_RESET
|
|
static int called_once = 0;
|
|
#endif
|
|
|
|
#if ERRORS_ONLY
|
|
if (SCpnt)
|
|
printk("fd_mcs: SCSI Bus Reset\n");
|
|
#endif
|
|
|
|
#if DEBUG_RESET
|
|
if (called_once)
|
|
fd_mcs_print_info(current_SC);
|
|
called_once = 1;
|
|
#endif
|
|
|
|
spin_lock_irqsave(shpnt->host_lock, flags);
|
|
|
|
outb(1, SCSI_Cntl_port);
|
|
do_pause(2);
|
|
outb(0, SCSI_Cntl_port);
|
|
do_pause(115);
|
|
outb(0, SCSI_Mode_Cntl_port);
|
|
outb(PARITY_MASK, TMC_Cntl_port);
|
|
|
|
spin_unlock_irqrestore(shpnt->host_lock, flags);
|
|
|
|
/* Unless this is the very first call (i.e., SCPnt == NULL), everything
|
|
is probably hosed at this point. We will, however, try to keep
|
|
things going by informing the high-level code that we need help. */
|
|
return SUCCESS;
|
|
}
|
|
|
|
#include <scsi/scsi_ioctl.h>
|
|
|
|
static int fd_mcs_biosparam(struct scsi_device * disk, struct block_device *bdev,
|
|
sector_t capacity, int *info_array)
|
|
{
|
|
unsigned char *p = scsi_bios_ptable(bdev);
|
|
int size = capacity;
|
|
|
|
/* BIOS >= 3.4 for MCA cards */
|
|
/* This algorithm was provided by Future Domain (much thanks!). */
|
|
|
|
if (p && p[65] == 0xaa && p[64] == 0x55 /* Partition table valid */
|
|
&& p[4]) { /* Partition type */
|
|
/* The partition table layout is as follows:
|
|
|
|
Start: 0x1b3h
|
|
Offset: 0 = partition status
|
|
1 = starting head
|
|
2 = starting sector and cylinder (word, encoded)
|
|
4 = partition type
|
|
5 = ending head
|
|
6 = ending sector and cylinder (word, encoded)
|
|
8 = starting absolute sector (double word)
|
|
c = number of sectors (double word)
|
|
Signature: 0x1fe = 0x55aa
|
|
|
|
So, this algorithm assumes:
|
|
1) the first partition table is in use,
|
|
2) the data in the first entry is correct, and
|
|
3) partitions never divide cylinders
|
|
|
|
Note that (1) may be FALSE for NetBSD (and other BSD flavors),
|
|
as well as for Linux. Note also, that Linux doesn't pay any
|
|
attention to the fields that are used by this algorithm -- it
|
|
only uses the absolute sector data. Recent versions of Linux's
|
|
fdisk(1) will fill this data in correctly, and forthcoming
|
|
versions will check for consistency.
|
|
|
|
Checking for a non-zero partition type is not part of the
|
|
Future Domain algorithm, but it seemed to be a reasonable thing
|
|
to do, especially in the Linux and BSD worlds. */
|
|
|
|
info_array[0] = p[5] + 1; /* heads */
|
|
info_array[1] = p[6] & 0x3f; /* sectors */
|
|
} else {
|
|
/* Note that this new method guarantees that there will always be
|
|
less than 1024 cylinders on a platter. This is good for drives
|
|
up to approximately 7.85GB (where 1GB = 1024 * 1024 kB). */
|
|
if ((unsigned int) size >= 0x7e0000U)
|
|
{
|
|
info_array[0] = 0xff; /* heads = 255 */
|
|
info_array[1] = 0x3f; /* sectors = 63 */
|
|
} else if ((unsigned int) size >= 0x200000U) {
|
|
info_array[0] = 0x80; /* heads = 128 */
|
|
info_array[1] = 0x3f; /* sectors = 63 */
|
|
} else {
|
|
info_array[0] = 0x40; /* heads = 64 */
|
|
info_array[1] = 0x20; /* sectors = 32 */
|
|
}
|
|
}
|
|
/* For both methods, compute the cylinders */
|
|
info_array[2] = (unsigned int) size / (info_array[0] * info_array[1]);
|
|
kfree(p);
|
|
return 0;
|
|
}
|
|
|
|
static struct scsi_host_template driver_template = {
|
|
.proc_name = "fd_mcs",
|
|
.proc_info = fd_mcs_proc_info,
|
|
.detect = fd_mcs_detect,
|
|
.release = fd_mcs_release,
|
|
.info = fd_mcs_info,
|
|
.queuecommand = fd_mcs_queue,
|
|
.eh_abort_handler = fd_mcs_abort,
|
|
.eh_bus_reset_handler = fd_mcs_bus_reset,
|
|
.bios_param = fd_mcs_biosparam,
|
|
.can_queue = 1,
|
|
.this_id = 7,
|
|
.sg_tablesize = 64,
|
|
.cmd_per_lun = 1,
|
|
.use_clustering = DISABLE_CLUSTERING,
|
|
};
|
|
#include "scsi_module.c"
|
|
|
|
MODULE_LICENSE("GPL");
|