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/*
* Generic Generic NCR5380 driver
*
* Copyright 1993, Drew Eckhardt
* Visionary Computing
* (Unix and Linux consulting and custom programming)
* drew@colorado.edu
* +1 (303) 440-4894
*
* NCR53C400 extensions (c) 1994,1995,1996, Kevin Lentin
* K.Lentin@cs.monash.edu.au
*
* NCR53C400A extensions (c) 1996, Ingmar Baumgart
* ingmar@gonzo.schwaben.de
*
* DTC3181E extensions (c) 1997, Ronald van Cuijlenborg
* ronald.van.cuijlenborg@tip.nl or nutty@dds.nl
*
* Added ISAPNP support for DTC436 adapters,
* Thomas Sailer, sailer@ife.ee.ethz.ch
*/
/*
* TODO : flesh out DMA support, find some one actually using this (I have
* a memory mapped Trantor board that works fine)
*/
/*
* The card is detected and initialized in one of several ways :
* 1. With command line overrides - NCR5380=port,irq may be
* used on the LILO command line to override the defaults.
*
* 2. With the GENERIC_NCR5380_OVERRIDE compile time define. This is
* specified as an array of address, irq, dma, board tuples. Ie, for
* one board at 0x350, IRQ5, no dma, I could say
* -DGENERIC_NCR5380_OVERRIDE={{0xcc000, 5, DMA_NONE, BOARD_NCR5380}}
*
* -1 should be specified for no or DMA interrupt, -2 to autoprobe for an
* IRQ line if overridden on the command line.
*
* 3. When included as a module, with arguments passed on the command line:
* ncr_irq=xx the interrupt
* ncr_addr=xx the port or base address (for port or memory
* mapped, resp.)
* ncr_dma=xx the DMA
* ncr_5380=1 to set up for a NCR5380 board
* ncr_53c400=1 to set up for a NCR53C400 board
* e.g.
* modprobe g_NCR5380 ncr_irq=5 ncr_addr=0x350 ncr_5380=1
* for a port mapped NCR5380 board or
* modprobe g_NCR5380 ncr_irq=255 ncr_addr=0xc8000 ncr_53c400=1
* for a memory mapped NCR53C400 board with interrupts disabled.
*
* 255 should be specified for no or DMA interrupt, 254 to autoprobe for an
* IRQ line if overridden on the command line.
*
*/
/* settings for DTC3181E card with only Mustek scanner attached */
#define USLEEP_POLL 1
#define USLEEP_SLEEP 20
#define USLEEP_WAITLONG 500
#define AUTOPROBE_IRQ
#ifdef CONFIG_SCSI_GENERIC_NCR53C400
#define NCR53C400_PSEUDO_DMA 1
#define PSEUDO_DMA
#define NCR53C400
#endif
#include <asm/io.h>
#include <linux/signal.h>
#include <linux/blkdev.h>
#include <scsi/scsi_host.h>
#include "g_NCR5380.h"
#include "NCR5380.h"
#include <linux/stat.h>
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/isapnp.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#define NCR_NOT_SET 0
static int ncr_irq = NCR_NOT_SET;
static int ncr_dma = NCR_NOT_SET;
static int ncr_addr = NCR_NOT_SET;
static int ncr_5380 = NCR_NOT_SET;
static int ncr_53c400 = NCR_NOT_SET;
static int ncr_53c400a = NCR_NOT_SET;
static int dtc_3181e = NCR_NOT_SET;
static struct override {
NCR5380_map_type NCR5380_map_name;
int irq;
int dma;
int board; /* Use NCR53c400, Ricoh, etc. extensions ? */
} overrides
#ifdef GENERIC_NCR5380_OVERRIDE
[] __initdata = GENERIC_NCR5380_OVERRIDE;
#else
[1] __initdata = { { 0,},};
#endif
#define NO_OVERRIDES ARRAY_SIZE(overrides)
#ifndef MODULE
/**
* internal_setup - handle lilo command string override
* @board: BOARD_* identifier for the board
* @str: unused
* @ints: numeric parameters
*
* Do LILO command line initialization of the overrides array. Display
* errors when needed
*
* Locks: none
*/
static void __init internal_setup(int board, char *str, int *ints)
{
static int commandline_current = 0;
switch (board) {
case BOARD_NCR5380:
if (ints[0] != 2 && ints[0] != 3) {
printk(KERN_ERR "generic_NCR5380_setup : usage ncr5380=" STRVAL(NCR5380_map_name) ",irq,dma\n");
return;
}
break;
case BOARD_NCR53C400:
if (ints[0] != 2) {
printk(KERN_ERR "generic_NCR53C400_setup : usage ncr53c400=" STRVAL(NCR5380_map_name) ",irq\n");
return;
}
break;
case BOARD_NCR53C400A:
if (ints[0] != 2) {
printk(KERN_ERR "generic_NCR53C400A_setup : usage ncr53c400a=" STRVAL(NCR5380_map_name) ",irq\n");
return;
}
break;
case BOARD_DTC3181E:
if (ints[0] != 2) {
printk("generic_DTC3181E_setup : usage dtc3181e=" STRVAL(NCR5380_map_name) ",irq\n");
return;
}
break;
}
if (commandline_current < NO_OVERRIDES) {
overrides[commandline_current].NCR5380_map_name = (NCR5380_map_type) ints[1];
overrides[commandline_current].irq = ints[2];
if (ints[0] == 3)
overrides[commandline_current].dma = ints[3];
else
overrides[commandline_current].dma = DMA_NONE;
overrides[commandline_current].board = board;
++commandline_current;
}
}
/**
* do_NCR53C80_setup - set up entry point
* @str: unused
*
* Setup function invoked at boot to parse the ncr5380= command
* line.
*/
static int __init do_NCR5380_setup(char *str)
{
int ints[10];
get_options(str, ARRAY_SIZE(ints), ints);
internal_setup(BOARD_NCR5380, str, ints);
return 1;
}
/**
* do_NCR53C400_setup - set up entry point
* @str: unused
* @ints: integer parameters from kernel setup code
*
* Setup function invoked at boot to parse the ncr53c400= command
* line.
*/
static int __init do_NCR53C400_setup(char *str)
{
int ints[10];
get_options(str, ARRAY_SIZE(ints), ints);
internal_setup(BOARD_NCR53C400, str, ints);
return 1;
}
/**
* do_NCR53C400A_setup - set up entry point
* @str: unused
* @ints: integer parameters from kernel setup code
*
* Setup function invoked at boot to parse the ncr53c400a= command
* line.
*/
static int __init do_NCR53C400A_setup(char *str)
{
int ints[10];
get_options(str, ARRAY_SIZE(ints), ints);
internal_setup(BOARD_NCR53C400A, str, ints);
return 1;
}
/**
* do_DTC3181E_setup - set up entry point
* @str: unused
* @ints: integer parameters from kernel setup code
*
* Setup function invoked at boot to parse the dtc3181e= command
* line.
*/
static int __init do_DTC3181E_setup(char *str)
{
int ints[10];
get_options(str, ARRAY_SIZE(ints), ints);
internal_setup(BOARD_DTC3181E, str, ints);
return 1;
}
#endif
/**
* generic_NCR5380_detect - look for NCR5380 controllers
* @tpnt: the scsi template
*
* Scan for the present of NCR5380, NCR53C400, NCR53C400A, DTC3181E
* and DTC436(ISAPnP) controllers. If overrides have been set we use
* them.
*
* The caller supplied NCR5380_init function is invoked from here, before
* the interrupt line is taken.
*
* Locks: none
*/
static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt)
{
static int current_override = 0;
int count;
unsigned int *ports;
#ifndef SCSI_G_NCR5380_MEM
int i;
unsigned long region_size = 16;
#endif
static unsigned int __initdata ncr_53c400a_ports[] = {
0x280, 0x290, 0x300, 0x310, 0x330, 0x340, 0x348, 0x350, 0
};
static unsigned int __initdata dtc_3181e_ports[] = {
0x220, 0x240, 0x280, 0x2a0, 0x2c0, 0x300, 0x320, 0x340, 0
};
int flags = 0;
struct Scsi_Host *instance;
#ifdef SCSI_G_NCR5380_MEM
unsigned long base;
void __iomem *iomem;
#endif
if (ncr_irq != NCR_NOT_SET)
overrides[0].irq = ncr_irq;
if (ncr_dma != NCR_NOT_SET)
overrides[0].dma = ncr_dma;
if (ncr_addr != NCR_NOT_SET)
overrides[0].NCR5380_map_name = (NCR5380_map_type)
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