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simons |
#define AUTOSENSE
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2 |
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#define PSEUDO_DMA
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3 |
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#define FOO
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#define UNSAFE /* Not unsafe for PAS16 -- use it */
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/*
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* This driver adapted from Drew Eckhardt's Trantor T128 driver
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*
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* Copyright 1993, Drew Eckhardt
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* Visionary Computing
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* (Unix and Linux consulting and custom programming)
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* drew@colorado.edu
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* +1 (303) 666-5836
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*
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* ( Based on T128 - DISTRIBUTION RELEASE 3. )
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*
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* Modified to work with the Pro Audio Spectrum/Studio 16
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* by John Weidman.
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*
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*
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* For more information, please consult
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*
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* Media Vision
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* (510) 770-8600
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* (800) 348-7116
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*
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* and
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*
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* NCR 5380 Family
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* SCSI Protocol Controller
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* Databook
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*
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* NCR Microelectronics
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* 1635 Aeroplaza Drive
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* Colorado Springs, CO 80916
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* 1+ (719) 578-3400
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* 1+ (800) 334-5454
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*/
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/*
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* Options :
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* AUTOSENSE - if defined, REQUEST SENSE will be performed automatically
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* for commands that return with a CHECK CONDITION status.
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*
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* LIMIT_TRANSFERSIZE - if defined, limit the pseudo-dma transfers to 512
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* bytes at a time. Since interrupts are disabled by default during
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* these transfers, we might need this to give reasonable interrupt
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* service time if the transfer size gets too large.
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*
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* PSEUDO_DMA - enables PSEUDO-DMA hardware, should give a 3-4X performance
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* increase compared to polled I/O.
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*
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* PARITY - enable parity checking. Not supported.
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*
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* SCSI2 - enable support for SCSI-II tagged queueing. Untested.
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*
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* UNSAFE - leave interrupts enabled during pseudo-DMA transfers. This
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* parameter comes from the NCR5380 code. It is NOT unsafe with
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* the PAS16 and you should use it. If you don't you will have
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* a problem with dropped characters during high speed
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* communications during SCSI transfers. If you really don't
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* want to use UNSAFE you can try defining LIMIT_TRANSFERSIZE or
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* twiddle with the transfer size in the high level code.
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*
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* USLEEP - enable support for devices that don't disconnect. Untested.
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*
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* The card is detected and initialized in one of several ways :
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* 1. Autoprobe (default) - There are many different models of
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* the Pro Audio Spectrum/Studio 16, and I only have one of
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* them, so this may require a little tweaking. An interrupt
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* is triggered to autoprobe for the interrupt line. Note:
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* with the newer model boards, the interrupt is set via
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* software after reset using the default_irq for the
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* current board number.
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*
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*
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* 2. With command line overrides - pas16=port,irq may be
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* used on the LILO command line to override the defaults.
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*
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* 3. With the PAS16_OVERRIDE compile time define. This is
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* specified as an array of address, irq tuples. Ie, for
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* one board at the default 0x388 address, IRQ10, I could say
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* -DPAS16_OVERRIDE={{0x388, 10}}
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* NOTE: Untested.
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*
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* Note that if the override methods are used, place holders must
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* be specified for other boards in the system.
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*
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*
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* Configuration notes :
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* The current driver does not support interrupt sharing with the
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* sound portion of the card. If you use the same irq for the
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* scsi port and sound you will have problems. Either use
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* a different irq for the scsi port or don't use interrupts
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* for the scsi port.
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*
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* If you have problems with your card not being recognized, use
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* the LILO command line override. Try to get it recognized without
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* interrupts. Ie, for a board at the default 0x388 base port,
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* boot: linux pas16=0x388,255
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*
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* (255 is the IRQ_NONE constant in NCR5380.h)
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*/
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#ifdef MODULE
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#include <linux/module.h>
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#endif
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#include <asm/system.h>
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#include <linux/signal.h>
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#include <linux/proc_fs.h>
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#include <linux/sched.h>
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#include <asm/io.h>
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#include <linux/blk.h>
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#include "scsi.h"
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#include "hosts.h"
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#include "pas16.h"
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#define AUTOPROBE_IRQ
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#include "NCR5380.h"
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#include "constants.h"
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#include "sd.h"
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#include<linux/stat.h>
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struct proc_dir_entry proc_scsi_pas16 = {
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PROC_SCSI_PAS16, 5, "pas16",
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S_IFDIR | S_IRUGO | S_IXUGO, 2
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};
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static int pas_maxi = 0;
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static int pas_wmaxi = 0;
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int scsi_irq_translate[] =
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{ 0, 0, 1, 2, 3, 4, 5, 6, 0, 0, 7, 8, 9, 0, 10, 11 };
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/* The default_irqs array contains values used to set the irq into the
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* board via software (as must be done on newer model boards without
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* irq jumpers on the board). The first value in the array will be
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* assigned to logical board 0, the next to board 1, etc.
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*/
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int default_irqs[] = { PAS16_DEFAULT_BOARD_1_IRQ,
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PAS16_DEFAULT_BOARD_2_IRQ,
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PAS16_DEFAULT_BOARD_3_IRQ,
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PAS16_DEFAULT_BOARD_4_IRQ
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};
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static struct override {
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unsigned short io_port;
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int irq;
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} overrides
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#ifdef PAS16_OVERRIDE
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[] = PAS16_OVERRIDE;
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#else
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[4] = {{0,IRQ_AUTO}, {0,IRQ_AUTO}, {0,IRQ_AUTO},
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{0,IRQ_AUTO}};
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#endif
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#define NO_OVERRIDES (sizeof(overrides) / sizeof(struct override))
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static struct base {
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unsigned short io_port;
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int noauto;
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} bases[] = { {PAS16_DEFAULT_BASE_1, 0},
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{PAS16_DEFAULT_BASE_2, 0},
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{PAS16_DEFAULT_BASE_3, 0},
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{PAS16_DEFAULT_BASE_4, 0}
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};
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#define NO_BASES (sizeof (bases) / sizeof (struct base))
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unsigned short pas16_offset[ 8 ] =
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{
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0x1c00, /* OUTPUT_DATA_REG */
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0x1c01, /* INITIATOR_COMMAND_REG */
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0x1c02, /* MODE_REG */
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0x1c03, /* TARGET_COMMAND_REG */
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0x3c00, /* STATUS_REG ro, SELECT_ENABLE_REG wo */
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0x3c01, /* BUS_AND_STATUS_REG ro, START_DMA_SEND_REG wo */
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0x3c02, /* INPUT_DATA_REGISTER ro, (N/A on PAS16 ?)
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* START_DMA_TARGET_RECEIVE_REG wo
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*/
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0x3c03, /* RESET_PARITY_INTERRUPT_REG ro,
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* START_DMA_INITIATOR_RECEIVE_REG wo
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*/
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};
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/*----------------------------------------------------------------*/
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/* the following will set the monitor border color (useful to find
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where something crashed or gets stuck at */
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/* 1 = blue
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2 = green
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3 = cyan
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4 = red
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5 = magenta
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6 = yellow
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7 = white
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*/
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#if 1
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#define rtrc(i) {inb(0x3da); outb(0x31, 0x3c0); outb((i), 0x3c0);}
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#else
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#define rtrc(i) {}
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#endif
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/*
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* Function : enable_board( int board_num, unsigned short port )
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*
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* Purpose : set address in new model board
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*
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* Inputs : board_num - logical board number 0-3, port - base address
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*
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*/
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void enable_board( int board_num, unsigned short port )
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{
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outb( 0xbc + board_num, MASTER_ADDRESS_PTR );
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outb( port >> 2, MASTER_ADDRESS_PTR );
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}
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/*
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* Function : init_board( unsigned short port, int irq )
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*
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* Purpose : Set the board up to handle the SCSI interface
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*
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* Inputs : port - base address of the board,
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* irq - irq to assign to the SCSI port
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* force_irq - set it even if it conflicts with sound driver
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*
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*/
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void init_board( unsigned short io_port, int irq, int force_irq )
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{
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unsigned int tmp;
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unsigned int pas_irq_code;
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/* Initialize the SCSI part of the board */
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outb( 0x30, io_port + P_TIMEOUT_COUNTER_REG ); /* Timeout counter */
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outb( 0x01, io_port + P_TIMEOUT_STATUS_REG_OFFSET ); /* Reset TC */
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outb( 0x01, io_port + WAIT_STATE ); /* 1 Wait state */
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NCR5380_read( RESET_PARITY_INTERRUPT_REG );
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/* Set the SCSI interrupt pointer without mucking up the sound
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* interrupt pointer in the same byte.
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*/
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pas_irq_code = ( irq < 16 ) ? scsi_irq_translate[irq] : 0;
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tmp = inb( io_port + IO_CONFIG_3 );
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if( (( tmp & 0x0f ) == pas_irq_code) && pas_irq_code > 0
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&& !force_irq )
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{
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254 |
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printk( "pas16: WARNING: Can't use same irq as sound "
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"driver -- interrupts disabled\n" );
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/* Set up the drive parameters, disable 5380 interrupts */
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outb( 0x4d, io_port + SYS_CONFIG_4 );
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}
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else
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{
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tmp = ( tmp & 0x0f ) | ( pas_irq_code << 4 );
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outb( tmp, io_port + IO_CONFIG_3 );
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/* Set up the drive parameters and enable 5380 interrupts */
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outb( 0x6d, io_port + SYS_CONFIG_4 );
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}
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}
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270 |
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/*
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271 |
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* Function : pas16_hw_detect( unsigned short board_num )
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*
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273 |
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* Purpose : determine if a pas16 board is present
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*
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* Inputs : board_num - logical board number ( 0 - 3 )
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*
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* Returns : 0 if board not found, 1 if found.
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278 |
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*/
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279 |
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280 |
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int pas16_hw_detect( unsigned short board_num )
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{
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282 |
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unsigned char board_rev, tmp;
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unsigned short io_port = bases[ board_num ].io_port;
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284 |
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285 |
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/* See if we can find a PAS16 board at the address associated
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286 |
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* with this logical board number.
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*/
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288 |
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289 |
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/* First, attempt to take a newer model board out of reset and
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* give it a base address. This shouldn't affect older boards.
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291 |
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*/
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292 |
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enable_board( board_num, io_port );
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293 |
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294 |
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/* Now see if it looks like a PAS16 board */
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295 |
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board_rev = inb( io_port + PCB_CONFIG );
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297 |
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if( board_rev == 0xff )
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return 0;
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299 |
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300 |
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tmp = board_rev ^ 0xe0;
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301 |
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302 |
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outb( tmp, io_port + PCB_CONFIG );
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303 |
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tmp = inb( io_port + PCB_CONFIG );
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304 |
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outb( board_rev, io_port + PCB_CONFIG );
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305 |
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306 |
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if( board_rev != tmp ) /* Not a PAS-16 */
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307 |
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return 0;
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308 |
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309 |
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if( ( inb( io_port + OPERATION_MODE_1 ) & 0x03 ) != 0x03 )
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310 |
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return 0; /* return if no SCSI interface found */
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311 |
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312 |
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/* Mediavision has some new model boards that return ID bits
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313 |
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* that indicate a SCSI interface, but they're not (LMS). We'll
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314 |
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* put in an additional test to try to weed them out.
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315 |
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*/
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316 |
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317 |
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outb( 0x01, io_port + WAIT_STATE ); /* 1 Wait state */
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318 |
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NCR5380_write( MODE_REG, 0x20 ); /* Is it really SCSI? */
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319 |
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if( NCR5380_read( MODE_REG ) != 0x20 ) /* Write to a reg. */
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return 0; /* and try to read */
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321 |
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NCR5380_write( MODE_REG, 0x00 ); /* it back. */
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322 |
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if( NCR5380_read( MODE_REG ) != 0x00 )
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return 0;
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324 |
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325 |
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return 1;
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326 |
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}
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327 |
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|
328 |
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|
329 |
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/*
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330 |
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* Function : pas16_setup(char *str, int *ints)
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331 |
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*
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332 |
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* Purpose : LILO command line initialization of the overrides array,
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333 |
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*
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334 |
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* Inputs : str - unused, ints - array of integer parameters with ints[0]
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335 |
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* equal to the number of ints.
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336 |
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*
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337 |
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*/
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338 |
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339 |
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void pas16_setup(char *str, int *ints) {
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340 |
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static int commandline_current = 0;
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341 |
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int i;
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342 |
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if (ints[0] != 2)
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343 |
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printk("pas16_setup : usage pas16=io_port,irq\n");
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344 |
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else
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345 |
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if (commandline_current < NO_OVERRIDES) {
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346 |
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overrides[commandline_current].io_port = (unsigned short) ints[1];
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347 |
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overrides[commandline_current].irq = ints[2];
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348 |
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for (i = 0; i < NO_BASES; ++i)
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349 |
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if (bases[i].io_port == (unsigned short) ints[1]) {
|
350 |
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bases[i].noauto = 1;
|
351 |
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break;
|
352 |
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}
|
353 |
|
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++commandline_current;
|
354 |
|
|
}
|
355 |
|
|
}
|
356 |
|
|
|
357 |
|
|
/*
|
358 |
|
|
* Function : int pas16_detect(Scsi_Host_Template * tpnt)
|
359 |
|
|
*
|
360 |
|
|
* Purpose : detects and initializes PAS16 controllers
|
361 |
|
|
* that were autoprobed, overridden on the LILO command line,
|
362 |
|
|
* or specified at compile time.
|
363 |
|
|
*
|
364 |
|
|
* Inputs : tpnt - template for this SCSI adapter.
|
365 |
|
|
*
|
366 |
|
|
* Returns : 1 if a host adapter was found, 0 if not.
|
367 |
|
|
*
|
368 |
|
|
*/
|
369 |
|
|
|
370 |
|
|
int pas16_detect(Scsi_Host_Template * tpnt) {
|
371 |
|
|
static int current_override = 0;
|
372 |
|
|
static unsigned short current_base = 0;
|
373 |
|
|
struct Scsi_Host *instance;
|
374 |
|
|
unsigned short io_port;
|
375 |
|
|
int count;
|
376 |
|
|
|
377 |
|
|
tpnt->proc_dir = &proc_scsi_pas16;
|
378 |
|
|
tpnt->proc_info = &pas16_proc_info;
|
379 |
|
|
|
380 |
|
|
for (count = 0; current_override < NO_OVERRIDES; ++current_override) {
|
381 |
|
|
io_port = 0;
|
382 |
|
|
|
383 |
|
|
if (overrides[current_override].io_port)
|
384 |
|
|
{
|
385 |
|
|
io_port = overrides[current_override].io_port;
|
386 |
|
|
enable_board( current_override, io_port );
|
387 |
|
|
init_board( io_port, overrides[current_override].irq, 1 );
|
388 |
|
|
}
|
389 |
|
|
else
|
390 |
|
|
for (; !io_port && (current_base < NO_BASES); ++current_base) {
|
391 |
|
|
#if (PDEBUG & PDEBUG_INIT)
|
392 |
|
|
printk("scsi-pas16 : probing io_port %04x\n", (unsigned int) bases[current_base].io_port);
|
393 |
|
|
#endif
|
394 |
|
|
if ( !bases[current_base].noauto &&
|
395 |
|
|
pas16_hw_detect( current_base ) ){
|
396 |
|
|
io_port = bases[current_base].io_port;
|
397 |
|
|
init_board( io_port, default_irqs[ current_base ], 0 );
|
398 |
|
|
#if (PDEBUG & PDEBUG_INIT)
|
399 |
|
|
printk("scsi-pas16 : detected board.\n");
|
400 |
|
|
#endif
|
401 |
|
|
}
|
402 |
|
|
}
|
403 |
|
|
|
404 |
|
|
|
405 |
|
|
#if defined(PDEBUG) && (PDEBUG & PDEBUG_INIT)
|
406 |
|
|
printk("scsi-pas16 : io_port = %04x\n", (unsigned int) io_port);
|
407 |
|
|
#endif
|
408 |
|
|
|
409 |
|
|
if (!io_port)
|
410 |
|
|
break;
|
411 |
|
|
|
412 |
|
|
instance = scsi_register (tpnt, sizeof(struct NCR5380_hostdata));
|
413 |
|
|
instance->io_port = io_port;
|
414 |
|
|
|
415 |
|
|
NCR5380_init(instance, 0);
|
416 |
|
|
|
417 |
|
|
if (overrides[current_override].irq != IRQ_AUTO)
|
418 |
|
|
instance->irq = overrides[current_override].irq;
|
419 |
|
|
else
|
420 |
|
|
instance->irq = NCR5380_probe_irq(instance, PAS16_IRQS);
|
421 |
|
|
|
422 |
|
|
if (instance->irq != IRQ_NONE)
|
423 |
|
|
if (request_irq(instance->irq, pas16_intr, SA_INTERRUPT, "pas16", NULL)) {
|
424 |
|
|
printk("scsi%d : IRQ%d not free, interrupts disabled\n",
|
425 |
|
|
instance->host_no, instance->irq);
|
426 |
|
|
instance->irq = IRQ_NONE;
|
427 |
|
|
}
|
428 |
|
|
|
429 |
|
|
if (instance->irq == IRQ_NONE) {
|
430 |
|
|
printk("scsi%d : interrupts not enabled. for better interactive performance,\n", instance->host_no);
|
431 |
|
|
printk("scsi%d : please jumper the board for a free IRQ.\n", instance->host_no);
|
432 |
|
|
/* Disable 5380 interrupts, leave drive params the same */
|
433 |
|
|
outb( 0x4d, io_port + SYS_CONFIG_4 );
|
434 |
|
|
outb( (inb(io_port + IO_CONFIG_3) & 0x0f), io_port + IO_CONFIG_3 );
|
435 |
|
|
}
|
436 |
|
|
|
437 |
|
|
#if defined(PDEBUG) && (PDEBUG & PDEBUG_INIT)
|
438 |
|
|
printk("scsi%d : irq = %d\n", instance->host_no, instance->irq);
|
439 |
|
|
#endif
|
440 |
|
|
|
441 |
|
|
printk("scsi%d : at 0x%04x", instance->host_no, (int)
|
442 |
|
|
instance->io_port);
|
443 |
|
|
if (instance->irq == IRQ_NONE)
|
444 |
|
|
printk (" interrupts disabled");
|
445 |
|
|
else
|
446 |
|
|
printk (" irq %d", instance->irq);
|
447 |
|
|
printk(" options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d",
|
448 |
|
|
CAN_QUEUE, CMD_PER_LUN, PAS16_PUBLIC_RELEASE);
|
449 |
|
|
NCR5380_print_options(instance);
|
450 |
|
|
printk("\n");
|
451 |
|
|
|
452 |
|
|
++current_override;
|
453 |
|
|
++count;
|
454 |
|
|
}
|
455 |
|
|
return count;
|
456 |
|
|
}
|
457 |
|
|
|
458 |
|
|
/*
|
459 |
|
|
* Function : int pas16_biosparam(Disk *disk, kdev_t dev, int *ip)
|
460 |
|
|
*
|
461 |
|
|
* Purpose : Generates a BIOS / DOS compatible H-C-S mapping for
|
462 |
|
|
* the specified device / size.
|
463 |
|
|
*
|
464 |
|
|
* Inputs : size = size of device in sectors (512 bytes), dev = block device
|
465 |
|
|
* major / minor, ip[] = {heads, sectors, cylinders}
|
466 |
|
|
*
|
467 |
|
|
* Returns : always 0 (success), initializes ip
|
468 |
|
|
*
|
469 |
|
|
*/
|
470 |
|
|
|
471 |
|
|
/*
|
472 |
|
|
* XXX Most SCSI boards use this mapping, I could be incorrect. Some one
|
473 |
|
|
* using hard disks on a trantor should verify that this mapping corresponds
|
474 |
|
|
* to that used by the BIOS / ASPI driver by running the linux fdisk program
|
475 |
|
|
* and matching the H_C_S coordinates to what DOS uses.
|
476 |
|
|
*/
|
477 |
|
|
|
478 |
|
|
int pas16_biosparam(Disk * disk, kdev_t dev, int * ip)
|
479 |
|
|
{
|
480 |
|
|
int size = disk->capacity;
|
481 |
|
|
ip[0] = 64;
|
482 |
|
|
ip[1] = 32;
|
483 |
|
|
ip[2] = size >> 11; /* I think I have it as /(32*64) */
|
484 |
|
|
if( ip[2] > 1024 ) { /* yes, >, not >= */
|
485 |
|
|
ip[0]=255;
|
486 |
|
|
ip[1]=63;
|
487 |
|
|
ip[2]=size/(63*255);
|
488 |
|
|
if( ip[2] > 1023 ) /* yes >1023... */
|
489 |
|
|
ip[2] = 1023;
|
490 |
|
|
}
|
491 |
|
|
|
492 |
|
|
return 0;
|
493 |
|
|
}
|
494 |
|
|
|
495 |
|
|
/*
|
496 |
|
|
* Function : int NCR5380_pread (struct Scsi_Host *instance,
|
497 |
|
|
* unsigned char *dst, int len)
|
498 |
|
|
*
|
499 |
|
|
* Purpose : Fast 5380 pseudo-dma read function, transfers len bytes to
|
500 |
|
|
* dst
|
501 |
|
|
*
|
502 |
|
|
* Inputs : dst = destination, len = length in bytes
|
503 |
|
|
*
|
504 |
|
|
* Returns : 0 on success, non zero on a failure such as a watchdog
|
505 |
|
|
* timeout.
|
506 |
|
|
*/
|
507 |
|
|
|
508 |
|
|
static inline int NCR5380_pread (struct Scsi_Host *instance, unsigned char *dst,
|
509 |
|
|
int len) {
|
510 |
|
|
register unsigned char *d = dst;
|
511 |
|
|
register unsigned short reg = (unsigned short) (instance->io_port +
|
512 |
|
|
P_DATA_REG_OFFSET);
|
513 |
|
|
register int i = len;
|
514 |
|
|
int ii = 0;
|
515 |
|
|
|
516 |
|
|
while ( !(inb(instance->io_port + P_STATUS_REG_OFFSET) & P_ST_RDY) )
|
517 |
|
|
++ii;
|
518 |
|
|
|
519 |
|
|
insb( reg, d, i );
|
520 |
|
|
|
521 |
|
|
if ( inb(instance->io_port + P_TIMEOUT_STATUS_REG_OFFSET) & P_TS_TIM) {
|
522 |
|
|
outb( P_TS_CT, instance->io_port + P_TIMEOUT_STATUS_REG_OFFSET);
|
523 |
|
|
printk("scsi%d : watchdog timer fired in NCR5380_pread()\n",
|
524 |
|
|
instance->host_no);
|
525 |
|
|
return -1;
|
526 |
|
|
}
|
527 |
|
|
if (ii > pas_maxi)
|
528 |
|
|
pas_maxi = ii;
|
529 |
|
|
return 0;
|
530 |
|
|
}
|
531 |
|
|
|
532 |
|
|
/*
|
533 |
|
|
* Function : int NCR5380_pwrite (struct Scsi_Host *instance,
|
534 |
|
|
* unsigned char *src, int len)
|
535 |
|
|
*
|
536 |
|
|
* Purpose : Fast 5380 pseudo-dma write function, transfers len bytes from
|
537 |
|
|
* src
|
538 |
|
|
*
|
539 |
|
|
* Inputs : src = source, len = length in bytes
|
540 |
|
|
*
|
541 |
|
|
* Returns : 0 on success, non zero on a failure such as a watchdog
|
542 |
|
|
* timeout.
|
543 |
|
|
*/
|
544 |
|
|
|
545 |
|
|
static inline int NCR5380_pwrite (struct Scsi_Host *instance, unsigned char *src,
|
546 |
|
|
int len) {
|
547 |
|
|
register unsigned char *s = src;
|
548 |
|
|
register unsigned short reg = (instance->io_port + P_DATA_REG_OFFSET);
|
549 |
|
|
register int i = len;
|
550 |
|
|
int ii = 0;
|
551 |
|
|
|
552 |
|
|
while ( !((inb(instance->io_port + P_STATUS_REG_OFFSET)) & P_ST_RDY) )
|
553 |
|
|
++ii;
|
554 |
|
|
|
555 |
|
|
outsb( reg, s, i );
|
556 |
|
|
|
557 |
|
|
if (inb(instance->io_port + P_TIMEOUT_STATUS_REG_OFFSET) & P_TS_TIM) {
|
558 |
|
|
outb( P_TS_CT, instance->io_port + P_TIMEOUT_STATUS_REG_OFFSET);
|
559 |
|
|
printk("scsi%d : watchdog timer fired in NCR5380_pwrite()\n",
|
560 |
|
|
instance->host_no);
|
561 |
|
|
return -1;
|
562 |
|
|
}
|
563 |
|
|
if (ii > pas_maxi)
|
564 |
|
|
pas_wmaxi = ii;
|
565 |
|
|
return 0;
|
566 |
|
|
}
|
567 |
|
|
|
568 |
|
|
#include "NCR5380.c"
|
569 |
|
|
|
570 |
|
|
#ifdef MODULE
|
571 |
|
|
/* Eventually this will go into an include file, but this will be later */
|
572 |
|
|
Scsi_Host_Template driver_template = MV_PAS16;
|
573 |
|
|
|
574 |
|
|
#include <linux/module.h>
|
575 |
|
|
#include "scsi_module.c"
|
576 |
|
|
#endif
|