566 строки
16 KiB
C
566 строки
16 KiB
C
/*
|
|
* This driver adapted from Drew Eckhardt's Trantor T128 driver
|
|
*
|
|
* Copyright 1993, Drew Eckhardt
|
|
* Visionary Computing
|
|
* (Unix and Linux consulting and custom programming)
|
|
* drew@colorado.edu
|
|
* +1 (303) 666-5836
|
|
*
|
|
* ( Based on T128 - DISTRIBUTION RELEASE 3. )
|
|
*
|
|
* Modified to work with the Pro Audio Spectrum/Studio 16
|
|
* by John Weidman.
|
|
*
|
|
*
|
|
* For more information, please consult
|
|
*
|
|
* Media Vision
|
|
* (510) 770-8600
|
|
* (800) 348-7116
|
|
*/
|
|
|
|
/*
|
|
* The card is detected and initialized in one of several ways :
|
|
* 1. Autoprobe (default) - There are many different models of
|
|
* the Pro Audio Spectrum/Studio 16, and I only have one of
|
|
* them, so this may require a little tweaking. An interrupt
|
|
* is triggered to autoprobe for the interrupt line. Note:
|
|
* with the newer model boards, the interrupt is set via
|
|
* software after reset using the default_irq for the
|
|
* current board number.
|
|
*
|
|
* 2. With command line overrides - pas16=port,irq may be
|
|
* used on the LILO command line to override the defaults.
|
|
*
|
|
* 3. With the PAS16_OVERRIDE compile time define. This is
|
|
* specified as an array of address, irq tuples. Ie, for
|
|
* one board at the default 0x388 address, IRQ10, I could say
|
|
* -DPAS16_OVERRIDE={{0x388, 10}}
|
|
* NOTE: Untested.
|
|
*
|
|
* 4. When included as a module, with arguments passed on the command line:
|
|
* pas16_irq=xx the interrupt
|
|
* pas16_addr=xx the port
|
|
* e.g. "modprobe pas16 pas16_addr=0x388 pas16_irq=5"
|
|
*
|
|
* Note that if the override methods are used, place holders must
|
|
* be specified for other boards in the system.
|
|
*
|
|
*
|
|
* Configuration notes :
|
|
* The current driver does not support interrupt sharing with the
|
|
* sound portion of the card. If you use the same irq for the
|
|
* scsi port and sound you will have problems. Either use
|
|
* a different irq for the scsi port or don't use interrupts
|
|
* for the scsi port.
|
|
*
|
|
* If you have problems with your card not being recognized, use
|
|
* the LILO command line override. Try to get it recognized without
|
|
* interrupts. Ie, for a board at the default 0x388 base port,
|
|
* boot: linux pas16=0x388,0
|
|
*
|
|
* NO_IRQ (0) should be specified for no interrupt,
|
|
* IRQ_AUTO (254) to autoprobe for an IRQ line if overridden
|
|
* on the command line.
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
|
|
#include <asm/io.h>
|
|
#include <asm/dma.h>
|
|
#include <linux/blkdev.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/init.h>
|
|
|
|
#include <scsi/scsi_host.h>
|
|
#include "pas16.h"
|
|
#include "NCR5380.h"
|
|
|
|
|
|
static unsigned short pas16_addr;
|
|
static int pas16_irq;
|
|
|
|
|
|
static const int scsi_irq_translate[] =
|
|
{ 0, 0, 1, 2, 3, 4, 5, 6, 0, 0, 7, 8, 9, 0, 10, 11 };
|
|
|
|
/* The default_irqs array contains values used to set the irq into the
|
|
* board via software (as must be done on newer model boards without
|
|
* irq jumpers on the board). The first value in the array will be
|
|
* assigned to logical board 0, the next to board 1, etc.
|
|
*/
|
|
static int default_irqs[] __initdata =
|
|
{ PAS16_DEFAULT_BOARD_1_IRQ,
|
|
PAS16_DEFAULT_BOARD_2_IRQ,
|
|
PAS16_DEFAULT_BOARD_3_IRQ,
|
|
PAS16_DEFAULT_BOARD_4_IRQ
|
|
};
|
|
|
|
static struct override {
|
|
unsigned short io_port;
|
|
int irq;
|
|
} overrides
|
|
#ifdef PAS16_OVERRIDE
|
|
[] __initdata = PAS16_OVERRIDE;
|
|
#else
|
|
[4] __initdata = {{0,IRQ_AUTO}, {0,IRQ_AUTO}, {0,IRQ_AUTO},
|
|
{0,IRQ_AUTO}};
|
|
#endif
|
|
|
|
#define NO_OVERRIDES ARRAY_SIZE(overrides)
|
|
|
|
static struct base {
|
|
unsigned short io_port;
|
|
int noauto;
|
|
} bases[] __initdata =
|
|
{ {PAS16_DEFAULT_BASE_1, 0},
|
|
{PAS16_DEFAULT_BASE_2, 0},
|
|
{PAS16_DEFAULT_BASE_3, 0},
|
|
{PAS16_DEFAULT_BASE_4, 0}
|
|
};
|
|
|
|
#define NO_BASES ARRAY_SIZE(bases)
|
|
|
|
static const unsigned short pas16_offset[ 8 ] =
|
|
{
|
|
0x1c00, /* OUTPUT_DATA_REG */
|
|
0x1c01, /* INITIATOR_COMMAND_REG */
|
|
0x1c02, /* MODE_REG */
|
|
0x1c03, /* TARGET_COMMAND_REG */
|
|
0x3c00, /* STATUS_REG ro, SELECT_ENABLE_REG wo */
|
|
0x3c01, /* BUS_AND_STATUS_REG ro, START_DMA_SEND_REG wo */
|
|
0x3c02, /* INPUT_DATA_REGISTER ro, (N/A on PAS16 ?)
|
|
* START_DMA_TARGET_RECEIVE_REG wo
|
|
*/
|
|
0x3c03, /* RESET_PARITY_INTERRUPT_REG ro,
|
|
* START_DMA_INITIATOR_RECEIVE_REG wo
|
|
*/
|
|
};
|
|
|
|
|
|
/*
|
|
* Function : enable_board( int board_num, unsigned short port )
|
|
*
|
|
* Purpose : set address in new model board
|
|
*
|
|
* Inputs : board_num - logical board number 0-3, port - base address
|
|
*
|
|
*/
|
|
|
|
static void __init
|
|
enable_board( int board_num, unsigned short port )
|
|
{
|
|
outb( 0xbc + board_num, MASTER_ADDRESS_PTR );
|
|
outb( port >> 2, MASTER_ADDRESS_PTR );
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* Function : init_board( unsigned short port, int irq )
|
|
*
|
|
* Purpose : Set the board up to handle the SCSI interface
|
|
*
|
|
* Inputs : port - base address of the board,
|
|
* irq - irq to assign to the SCSI port
|
|
* force_irq - set it even if it conflicts with sound driver
|
|
*
|
|
*/
|
|
|
|
static void __init
|
|
init_board( unsigned short io_port, int irq, int force_irq )
|
|
{
|
|
unsigned int tmp;
|
|
unsigned int pas_irq_code;
|
|
|
|
/* Initialize the SCSI part of the board */
|
|
|
|
outb( 0x30, io_port + P_TIMEOUT_COUNTER_REG ); /* Timeout counter */
|
|
outb( 0x01, io_port + P_TIMEOUT_STATUS_REG_OFFSET ); /* Reset TC */
|
|
outb( 0x01, io_port + WAIT_STATE ); /* 1 Wait state */
|
|
|
|
inb(io_port + pas16_offset[RESET_PARITY_INTERRUPT_REG]);
|
|
|
|
/* Set the SCSI interrupt pointer without mucking up the sound
|
|
* interrupt pointer in the same byte.
|
|
*/
|
|
pas_irq_code = ( irq < 16 ) ? scsi_irq_translate[irq] : 0;
|
|
tmp = inb( io_port + IO_CONFIG_3 );
|
|
|
|
if( (( tmp & 0x0f ) == pas_irq_code) && pas_irq_code > 0
|
|
&& !force_irq )
|
|
{
|
|
printk( "pas16: WARNING: Can't use same irq as sound "
|
|
"driver -- interrupts disabled\n" );
|
|
/* Set up the drive parameters, disable 5380 interrupts */
|
|
outb( 0x4d, io_port + SYS_CONFIG_4 );
|
|
}
|
|
else
|
|
{
|
|
tmp = ( tmp & 0x0f ) | ( pas_irq_code << 4 );
|
|
outb( tmp, io_port + IO_CONFIG_3 );
|
|
|
|
/* Set up the drive parameters and enable 5380 interrupts */
|
|
outb( 0x6d, io_port + SYS_CONFIG_4 );
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* Function : pas16_hw_detect( unsigned short board_num )
|
|
*
|
|
* Purpose : determine if a pas16 board is present
|
|
*
|
|
* Inputs : board_num - logical board number ( 0 - 3 )
|
|
*
|
|
* Returns : 0 if board not found, 1 if found.
|
|
*/
|
|
|
|
static int __init
|
|
pas16_hw_detect( unsigned short board_num )
|
|
{
|
|
unsigned char board_rev, tmp;
|
|
unsigned short io_port = bases[ board_num ].io_port;
|
|
|
|
/* See if we can find a PAS16 board at the address associated
|
|
* with this logical board number.
|
|
*/
|
|
|
|
/* First, attempt to take a newer model board out of reset and
|
|
* give it a base address. This shouldn't affect older boards.
|
|
*/
|
|
enable_board( board_num, io_port );
|
|
|
|
/* Now see if it looks like a PAS16 board */
|
|
board_rev = inb( io_port + PCB_CONFIG );
|
|
|
|
if( board_rev == 0xff )
|
|
return 0;
|
|
|
|
tmp = board_rev ^ 0xe0;
|
|
|
|
outb( tmp, io_port + PCB_CONFIG );
|
|
tmp = inb( io_port + PCB_CONFIG );
|
|
outb( board_rev, io_port + PCB_CONFIG );
|
|
|
|
if( board_rev != tmp ) /* Not a PAS-16 */
|
|
return 0;
|
|
|
|
if( ( inb( io_port + OPERATION_MODE_1 ) & 0x03 ) != 0x03 )
|
|
return 0; /* return if no SCSI interface found */
|
|
|
|
/* Mediavision has some new model boards that return ID bits
|
|
* that indicate a SCSI interface, but they're not (LMS). We'll
|
|
* put in an additional test to try to weed them out.
|
|
*/
|
|
|
|
outb(0x01, io_port + WAIT_STATE); /* 1 Wait state */
|
|
outb(0x20, io_port + pas16_offset[MODE_REG]); /* Is it really SCSI? */
|
|
if (inb(io_port + pas16_offset[MODE_REG]) != 0x20) /* Write to a reg. */
|
|
return 0; /* and try to read */
|
|
outb(0x00, io_port + pas16_offset[MODE_REG]); /* it back. */
|
|
if (inb(io_port + pas16_offset[MODE_REG]) != 0x00)
|
|
return 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
|
|
#ifndef MODULE
|
|
/*
|
|
* Function : pas16_setup(char *str, int *ints)
|
|
*
|
|
* Purpose : LILO command line initialization of the overrides array,
|
|
*
|
|
* Inputs : str - unused, ints - array of integer parameters with ints[0]
|
|
* equal to the number of ints.
|
|
*
|
|
*/
|
|
|
|
static int __init pas16_setup(char *str)
|
|
{
|
|
static int commandline_current;
|
|
int i;
|
|
int ints[10];
|
|
|
|
get_options(str, ARRAY_SIZE(ints), ints);
|
|
if (ints[0] != 2)
|
|
printk("pas16_setup : usage pas16=io_port,irq\n");
|
|
else
|
|
if (commandline_current < NO_OVERRIDES) {
|
|
overrides[commandline_current].io_port = (unsigned short) ints[1];
|
|
overrides[commandline_current].irq = ints[2];
|
|
for (i = 0; i < NO_BASES; ++i)
|
|
if (bases[i].io_port == (unsigned short) ints[1]) {
|
|
bases[i].noauto = 1;
|
|
break;
|
|
}
|
|
++commandline_current;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
__setup("pas16=", pas16_setup);
|
|
#endif
|
|
|
|
/*
|
|
* Function : int pas16_detect(struct scsi_host_template * tpnt)
|
|
*
|
|
* Purpose : detects and initializes PAS16 controllers
|
|
* that were autoprobed, overridden on the LILO command line,
|
|
* or specified at compile time.
|
|
*
|
|
* Inputs : tpnt - template for this SCSI adapter.
|
|
*
|
|
* Returns : 1 if a host adapter was found, 0 if not.
|
|
*
|
|
*/
|
|
|
|
static int __init pas16_detect(struct scsi_host_template *tpnt)
|
|
{
|
|
static int current_override;
|
|
static unsigned short current_base;
|
|
struct Scsi_Host *instance;
|
|
unsigned short io_port;
|
|
int count;
|
|
|
|
if (pas16_addr != 0) {
|
|
overrides[0].io_port = pas16_addr;
|
|
/*
|
|
* This is how we avoid seeing more than
|
|
* one host adapter at the same I/O port.
|
|
* Cribbed shamelessly from pas16_setup().
|
|
*/
|
|
for (count = 0; count < NO_BASES; ++count)
|
|
if (bases[count].io_port == pas16_addr) {
|
|
bases[count].noauto = 1;
|
|
break;
|
|
}
|
|
}
|
|
if (pas16_irq != 0)
|
|
overrides[0].irq = pas16_irq;
|
|
|
|
for (count = 0; current_override < NO_OVERRIDES; ++current_override) {
|
|
io_port = 0;
|
|
|
|
if (overrides[current_override].io_port)
|
|
{
|
|
io_port = overrides[current_override].io_port;
|
|
enable_board( current_override, io_port );
|
|
init_board( io_port, overrides[current_override].irq, 1 );
|
|
}
|
|
else
|
|
for (; !io_port && (current_base < NO_BASES); ++current_base) {
|
|
dprintk(NDEBUG_INIT, "pas16: probing io_port 0x%04x\n",
|
|
(unsigned int)bases[current_base].io_port);
|
|
if ( !bases[current_base].noauto &&
|
|
pas16_hw_detect( current_base ) ){
|
|
io_port = bases[current_base].io_port;
|
|
init_board( io_port, default_irqs[ current_base ], 0 );
|
|
dprintk(NDEBUG_INIT, "pas16: detected board\n");
|
|
}
|
|
}
|
|
|
|
dprintk(NDEBUG_INIT, "pas16: io_port = 0x%04x\n",
|
|
(unsigned int)io_port);
|
|
|
|
if (!io_port)
|
|
break;
|
|
|
|
instance = scsi_register (tpnt, sizeof(struct NCR5380_hostdata));
|
|
if(instance == NULL)
|
|
goto out;
|
|
|
|
instance->io_port = io_port;
|
|
|
|
if (NCR5380_init(instance, FLAG_DMA_FIXUP | FLAG_LATE_DMA_SETUP))
|
|
goto out_unregister;
|
|
|
|
NCR5380_maybe_reset_bus(instance);
|
|
|
|
if (overrides[current_override].irq != IRQ_AUTO)
|
|
instance->irq = overrides[current_override].irq;
|
|
else
|
|
instance->irq = NCR5380_probe_irq(instance, PAS16_IRQS);
|
|
|
|
/* Compatibility with documented NCR5380 kernel parameters */
|
|
if (instance->irq == 255)
|
|
instance->irq = NO_IRQ;
|
|
|
|
if (instance->irq != NO_IRQ)
|
|
if (request_irq(instance->irq, pas16_intr, 0,
|
|
"pas16", instance)) {
|
|
printk("scsi%d : IRQ%d not free, interrupts disabled\n",
|
|
instance->host_no, instance->irq);
|
|
instance->irq = NO_IRQ;
|
|
}
|
|
|
|
if (instance->irq == NO_IRQ) {
|
|
printk("scsi%d : interrupts not enabled. for better interactive performance,\n", instance->host_no);
|
|
printk("scsi%d : please jumper the board for a free IRQ.\n", instance->host_no);
|
|
/* Disable 5380 interrupts, leave drive params the same */
|
|
outb( 0x4d, io_port + SYS_CONFIG_4 );
|
|
outb( (inb(io_port + IO_CONFIG_3) & 0x0f), io_port + IO_CONFIG_3 );
|
|
}
|
|
|
|
dprintk(NDEBUG_INIT, "scsi%d : irq = %d\n",
|
|
instance->host_no, instance->irq);
|
|
|
|
++current_override;
|
|
++count;
|
|
}
|
|
return count;
|
|
|
|
out_unregister:
|
|
scsi_unregister(instance);
|
|
out:
|
|
return count;
|
|
}
|
|
|
|
/*
|
|
* Function : int pas16_biosparam(Disk *disk, struct block_device *dev, int *ip)
|
|
*
|
|
* Purpose : Generates a BIOS / DOS compatible H-C-S mapping for
|
|
* the specified device / size.
|
|
*
|
|
* Inputs : size = size of device in sectors (512 bytes), dev = block device
|
|
* major / minor, ip[] = {heads, sectors, cylinders}
|
|
*
|
|
* Returns : always 0 (success), initializes ip
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* XXX Most SCSI boards use this mapping, I could be incorrect. Some one
|
|
* using hard disks on a trantor should verify that this mapping corresponds
|
|
* to that used by the BIOS / ASPI driver by running the linux fdisk program
|
|
* and matching the H_C_S coordinates to what DOS uses.
|
|
*/
|
|
|
|
static int pas16_biosparam(struct scsi_device *sdev, struct block_device *dev,
|
|
sector_t capacity, int *ip)
|
|
{
|
|
int size = capacity;
|
|
ip[0] = 64;
|
|
ip[1] = 32;
|
|
ip[2] = size >> 11; /* I think I have it as /(32*64) */
|
|
if( ip[2] > 1024 ) { /* yes, >, not >= */
|
|
ip[0]=255;
|
|
ip[1]=63;
|
|
ip[2]=size/(63*255);
|
|
if( ip[2] > 1023 ) /* yes >1023... */
|
|
ip[2] = 1023;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Function : int pas16_pread (struct Scsi_Host *instance,
|
|
* unsigned char *dst, int len)
|
|
*
|
|
* Purpose : Fast 5380 pseudo-dma read function, transfers len bytes to
|
|
* dst
|
|
*
|
|
* Inputs : dst = destination, len = length in bytes
|
|
*
|
|
* Returns : 0 on success, non zero on a failure such as a watchdog
|
|
* timeout.
|
|
*/
|
|
|
|
static inline int pas16_pread(struct Scsi_Host *instance,
|
|
unsigned char *dst, int len)
|
|
{
|
|
register unsigned char *d = dst;
|
|
register unsigned short reg = (unsigned short) (instance->io_port +
|
|
P_DATA_REG_OFFSET);
|
|
register int i = len;
|
|
int ii = 0;
|
|
|
|
while ( !(inb(instance->io_port + P_STATUS_REG_OFFSET) & P_ST_RDY) )
|
|
++ii;
|
|
|
|
insb( reg, d, i );
|
|
|
|
if ( inb(instance->io_port + P_TIMEOUT_STATUS_REG_OFFSET) & P_TS_TIM) {
|
|
outb( P_TS_CT, instance->io_port + P_TIMEOUT_STATUS_REG_OFFSET);
|
|
printk("scsi%d : watchdog timer fired in NCR5380_pread()\n",
|
|
instance->host_no);
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Function : int pas16_pwrite (struct Scsi_Host *instance,
|
|
* unsigned char *src, int len)
|
|
*
|
|
* Purpose : Fast 5380 pseudo-dma write function, transfers len bytes from
|
|
* src
|
|
*
|
|
* Inputs : src = source, len = length in bytes
|
|
*
|
|
* Returns : 0 on success, non zero on a failure such as a watchdog
|
|
* timeout.
|
|
*/
|
|
|
|
static inline int pas16_pwrite(struct Scsi_Host *instance,
|
|
unsigned char *src, int len)
|
|
{
|
|
register unsigned char *s = src;
|
|
register unsigned short reg = (instance->io_port + P_DATA_REG_OFFSET);
|
|
register int i = len;
|
|
int ii = 0;
|
|
|
|
while ( !((inb(instance->io_port + P_STATUS_REG_OFFSET)) & P_ST_RDY) )
|
|
++ii;
|
|
|
|
outsb( reg, s, i );
|
|
|
|
if (inb(instance->io_port + P_TIMEOUT_STATUS_REG_OFFSET) & P_TS_TIM) {
|
|
outb( P_TS_CT, instance->io_port + P_TIMEOUT_STATUS_REG_OFFSET);
|
|
printk("scsi%d : watchdog timer fired in NCR5380_pwrite()\n",
|
|
instance->host_no);
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
#include "NCR5380.c"
|
|
|
|
static int pas16_release(struct Scsi_Host *shost)
|
|
{
|
|
if (shost->irq != NO_IRQ)
|
|
free_irq(shost->irq, shost);
|
|
NCR5380_exit(shost);
|
|
scsi_unregister(shost);
|
|
return 0;
|
|
}
|
|
|
|
static struct scsi_host_template driver_template = {
|
|
.name = "Pro Audio Spectrum-16 SCSI",
|
|
.detect = pas16_detect,
|
|
.release = pas16_release,
|
|
.proc_name = "pas16",
|
|
.info = pas16_info,
|
|
.queuecommand = pas16_queue_command,
|
|
.eh_abort_handler = pas16_abort,
|
|
.eh_bus_reset_handler = pas16_bus_reset,
|
|
.bios_param = pas16_biosparam,
|
|
.can_queue = 32,
|
|
.this_id = 7,
|
|
.sg_tablesize = SG_ALL,
|
|
.cmd_per_lun = 2,
|
|
.use_clustering = DISABLE_CLUSTERING,
|
|
.cmd_size = NCR5380_CMD_SIZE,
|
|
.max_sectors = 128,
|
|
};
|
|
#include "scsi_module.c"
|
|
|
|
#ifdef MODULE
|
|
module_param(pas16_addr, ushort, 0);
|
|
module_param(pas16_irq, int, 0);
|
|
#endif
|
|
MODULE_LICENSE("GPL");
|