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kernel-ark/drivers/scsi/g_NCR5380.c
Finn Thain 0a4e361254 ncr5380: Fix soft lockups 
Because of the rudimentary design of the chip, it is necessary to poll the
SCSI bus signals during PIO and this tends to hog the CPU. The driver will
accept new commands while others execute, and this causes a soft lockup
because the workqueue item will not terminate until the issue queue is
emptied.

When exercising dmx3191d using sequential IO from dd, the driver is sent
512 KiB WRITE commands and 128 KiB READs. For a PIO transfer, the rate is
is only about 300 KiB/s, so these are long-running commands. And although
PDMA may run at several MiB/s, interrupts are disabled for the duration
of the transfer.

Fix the unresponsiveness and soft lockup issues by calling cond_resched()
after each command is completed and by limiting max_sectors for drivers
that don't implement real DMA.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Tested-by: Ondrej Zary <linux@rainbow-software.org>
Tested-by: Michael Schmitz <schmitzmic@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-01-06 21:43:09 -05:00

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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.
*
*/
#define AUTOPROBE_IRQ
#ifdef CONFIG_SCSI_GENERIC_NCR53C400
#define PSEUDO_DMA
#endif
#include <asm/io.h>
#include <linux/blkdev.h>
#include <linux/module.h>
#include <scsi/scsi_host.h>
#include "g_NCR5380.h"
#include "NCR5380.h"
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/isapnp.h>
#include <linux/interrupt.h>
static int ncr_irq;
static int ncr_dma;
static int ncr_addr;
static int ncr_5380;
static int ncr_53c400;
static int ncr_53c400a;
static int dtc_3181e;
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;
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.
*
* Locks: none
*/
static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt)
{
static int current_override;
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;
struct Scsi_Host *instance;
#ifdef SCSI_G_NCR5380_MEM
unsigned long base;
void __iomem *iomem;
#endif
if (ncr_irq)
overrides[0].irq = ncr_irq;
if (ncr_dma)
overrides[0].dma = ncr_dma;
if (ncr_addr)
overrides[0].NCR5380_map_name = (NCR5380_map_type) ncr_addr;
if (ncr_5380)
overrides[0].board = BOARD_NCR5380;
else if (ncr_53c400)
overrides[0].board = BOARD_NCR53C400;
else if (ncr_53c400a)
overrides[0].board = BOARD_NCR53C400A;
else if (dtc_3181e)
overrides[0].board = BOARD_DTC3181E;
#ifndef SCSI_G_NCR5380_MEM
if (!current_override && isapnp_present()) {
struct pnp_dev *dev = NULL;
count = 0;
while ((dev = pnp_find_dev(NULL, ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e), dev))) {
if (count >= NO_OVERRIDES)
break;
if (pnp_device_attach(dev) < 0)
continue;
if (pnp_activate_dev(dev) < 0) {
printk(KERN_ERR "dtc436e probe: activate failed\n");
pnp_device_detach(dev);
continue;
}
if (!pnp_port_valid(dev, 0)) {
printk(KERN_ERR "dtc436e probe: no valid port\n");
pnp_device_detach(dev);
continue;
}
if (pnp_irq_valid(dev, 0))
overrides[count].irq = pnp_irq(dev, 0);
else
overrides[count].irq = NO_IRQ;
if (pnp_dma_valid(dev, 0))
overrides[count].dma = pnp_dma(dev, 0);
else
overrides[count].dma = DMA_NONE;
overrides[count].NCR5380_map_name = (NCR5380_map_type) pnp_port_start(dev, 0);
overrides[count].board = BOARD_DTC3181E;
count++;
}
}
#endif
for (count = 0; current_override < NO_OVERRIDES; ++current_override) {
if (!(overrides[current_override].NCR5380_map_name))
continue;
ports = NULL;
flags = 0;
switch (overrides[current_override].board) {
case BOARD_NCR5380:
flags = FLAG_NO_PSEUDO_DMA;
break;
case BOARD_NCR53C400:
#ifdef PSEUDO_DMA
flags = FLAG_NO_DMA_FIXUP;
#endif
break;
case BOARD_NCR53C400A:
flags = FLAG_NO_PSEUDO_DMA;
ports = ncr_53c400a_ports;
break;
case BOARD_DTC3181E:
flags = FLAG_NO_PSEUDO_DMA;
ports = dtc_3181e_ports;
break;
}
#ifndef SCSI_G_NCR5380_MEM
if (ports) {
/* wakeup sequence for the NCR53C400A and DTC3181E */
/* Disable the adapter and look for a free io port */
outb(0x59, 0x779);
outb(0xb9, 0x379);
outb(0xc5, 0x379);
outb(0xae, 0x379);
outb(0xa6, 0x379);
outb(0x00, 0x379);
if (overrides[current_override].NCR5380_map_name != PORT_AUTO)
for (i = 0; ports[i]; i++) {
if (!request_region(ports[i], 16, "ncr53c80"))
continue;
if (overrides[current_override].NCR5380_map_name == ports[i])
break;
release_region(ports[i], 16);
} else
for (i = 0; ports[i]; i++) {
if (!request_region(ports[i], 16, "ncr53c80"))
continue;
if (inb(ports[i]) == 0xff)
break;
release_region(ports[i], 16);
}
if (ports[i]) {
/* At this point we have our region reserved */
outb(0x59, 0x779);
outb(0xb9, 0x379);
outb(0xc5, 0x379);
outb(0xae, 0x379);
outb(0xa6, 0x379);
outb(0x80 | i, 0x379); /* set io port to be used */
outb(0xc0, ports[i] + 9);
if (inb(ports[i] + 9) != 0x80)
continue;
else
overrides[current_override].NCR5380_map_name = ports[i];
} else
continue;
}
else
{
/* Not a 53C400A style setup - just grab */
if(!(request_region(overrides[current_override].NCR5380_map_name, NCR5380_region_size, "ncr5380")))
continue;
region_size = NCR5380_region_size;
}
#else
base = overrides[current_override].NCR5380_map_name;
if (!request_mem_region(base, NCR5380_region_size, "ncr5380"))
continue;
iomem = ioremap(base, NCR5380_region_size);
if (!iomem) {
release_mem_region(base, NCR5380_region_size);
continue;
}
#endif
instance = scsi_register(tpnt, sizeof(struct NCR5380_hostdata));
if (instance == NULL)
goto out_release;
#ifndef SCSI_G_NCR5380_MEM
instance->io_port = overrides[current_override].NCR5380_map_name;
instance->n_io_port = region_size;
/*
* On NCR53C400 boards, NCR5380 registers are mapped 8 past
* the base address.
*/
if (overrides[current_override].board == BOARD_NCR53C400)
instance->io_port += 8;
#else
instance->base = overrides[current_override].NCR5380_map_name;
((struct NCR5380_hostdata *)instance->hostdata)->iomem = iomem;
#endif
if (NCR5380_init(instance, flags))
goto out_unregister;
if (overrides[current_override].board == BOARD_NCR53C400)
NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE);
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, 0xffff);
/* Compatibility with documented NCR5380 kernel parameters */
if (instance->irq == 255)
instance->irq = NO_IRQ;
if (instance->irq != NO_IRQ)
if (request_irq(instance->irq, generic_NCR5380_intr,
0, "NCR5380", instance)) {
printk(KERN_WARNING "scsi%d : IRQ%d not free, interrupts disabled\n", instance->host_no, instance->irq);
instance->irq = NO_IRQ;
}
if (instance->irq == NO_IRQ) {
printk(KERN_INFO "scsi%d : interrupts not enabled. for better interactive performance,\n", instance->host_no);
printk(KERN_INFO "scsi%d : please jumper the board for a free IRQ.\n", instance->host_no);
}
++current_override;
++count;
}
return count;
out_unregister:
scsi_unregister(instance);
out_release:
#ifndef SCSI_G_NCR5380_MEM
release_region(overrides[current_override].NCR5380_map_name, region_size);
#else
iounmap(iomem);
release_mem_region(base, NCR5380_region_size);
#endif
return count;
}
/**
* generic_NCR5380_release_resources - free resources
* @instance: host adapter to clean up
*
* Free the generic interface resources from this adapter.
*
* Locks: none
*/
static int generic_NCR5380_release_resources(struct Scsi_Host *instance)
{
if (instance->irq != NO_IRQ)
free_irq(instance->irq, instance);
NCR5380_exit(instance);
#ifndef SCSI_G_NCR5380_MEM
release_region(instance->io_port, instance->n_io_port);
#else
iounmap(((struct NCR5380_hostdata *)instance->hostdata)->iomem);
release_mem_region(instance->base, NCR5380_region_size);
#endif
return 0;
}
#ifdef BIOSPARAM
/**
* generic_NCR5380_biosparam
* @disk: disk to compute geometry for
* @dev: device identifier for this disk
* @ip: sizes to fill in
*
* Generates a BIOS / DOS compatible H-C-S mapping for the specified
* device / size.
*
* XXX Most SCSI boards use this mapping, I could be incorrect. Someone
* 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.
*
* Locks: none
*/
static int
generic_NCR5380_biosparam(struct scsi_device *sdev, struct block_device *bdev,
sector_t capacity, int *ip)
{
ip[0] = 64;
ip[1] = 32;
ip[2] = capacity >> 11;
return 0;
}
#endif
#ifdef PSEUDO_DMA
/**
* NCR5380_pread - pseudo DMA read
* @instance: adapter to read from
* @dst: buffer to read into
* @len: buffer length
*
* Perform a pseudo DMA mode read from an NCR53C400 or equivalent
* controller
*/
static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *dst, int len)
{
#ifdef SCSI_G_NCR5380_MEM
struct NCR5380_hostdata *hostdata = shost_priv(instance);
#endif
int blocks = len / 128;
int start = 0;
int bl;
NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE | CSR_TRANS_DIR);
NCR5380_write(C400_BLOCK_COUNTER_REG, blocks);
while (1) {
if ((bl = NCR5380_read(C400_BLOCK_COUNTER_REG)) == 0) {
break;
}
if (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ) {
printk(KERN_ERR "53C400r: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks);
return -1;
}
while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY);
#ifndef SCSI_G_NCR5380_MEM
{
int i;
for (i = 0; i < 128; i++)
dst[start + i] = NCR5380_read(C400_HOST_BUFFER);
}
#else
/* implies SCSI_G_NCR5380_MEM */
memcpy_fromio(dst + start,
hostdata->iomem + NCR53C400_host_buffer, 128);
#endif
start += 128;
blocks--;
}
if (blocks) {
while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY)
{
// FIXME - no timeout
}
#ifndef SCSI_G_NCR5380_MEM
{
int i;
for (i = 0; i < 128; i++)
dst[start + i] = NCR5380_read(C400_HOST_BUFFER);
}
#else
/* implies SCSI_G_NCR5380_MEM */
memcpy_fromio(dst + start,
hostdata->iomem + NCR53C400_host_buffer, 128);
#endif
start += 128;
blocks--;
}
if (!(NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ))
printk("53C400r: no 53C80 gated irq after transfer");
#if 0
/*
* DON'T DO THIS - THEY NEVER ARRIVE!
*/
printk("53C400r: Waiting for 53C80 registers\n");
while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_53C80_REG)
;
#endif
if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_END_DMA_TRANSFER))
printk(KERN_ERR "53C400r: no end dma signal\n");
return 0;
}
/**
* NCR5380_write - pseudo DMA write
* @instance: adapter to read from
* @dst: buffer to read into
* @len: buffer length
*
* Perform a pseudo DMA mode read from an NCR53C400 or equivalent
* controller
*/
static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *src, int len)
{
#ifdef SCSI_G_NCR5380_MEM
struct NCR5380_hostdata *hostdata = shost_priv(instance);
#endif
int blocks = len / 128;
int start = 0;
int bl;
int i;
NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE);
NCR5380_write(C400_BLOCK_COUNTER_REG, blocks);
while (1) {
if (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ) {
printk(KERN_ERR "53C400w: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks);
return -1;
}
if ((bl = NCR5380_read(C400_BLOCK_COUNTER_REG)) == 0) {
break;
}
while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY)
; // FIXME - timeout
#ifndef SCSI_G_NCR5380_MEM
{
for (i = 0; i < 128; i++)
NCR5380_write(C400_HOST_BUFFER, src[start + i]);
}
#else
/* implies SCSI_G_NCR5380_MEM */
memcpy_toio(hostdata->iomem + NCR53C400_host_buffer,
src + start, 128);
#endif
start += 128;
blocks--;
}
if (blocks) {
while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY)
; // FIXME - no timeout
#ifndef SCSI_G_NCR5380_MEM
{
for (i = 0; i < 128; i++)
NCR5380_write(C400_HOST_BUFFER, src[start + i]);
}
#else
/* implies SCSI_G_NCR5380_MEM */
memcpy_toio(hostdata->iomem + NCR53C400_host_buffer,
src + start, 128);
#endif
start += 128;
blocks--;
}
#if 0
printk("53C400w: waiting for registers to be available\n");
THEY NEVER DO ! while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_53C80_REG);
printk("53C400w: Got em\n");
#endif
/* Let's wait for this instead - could be ugly */
/* All documentation says to check for this. Maybe my hardware is too
* fast. Waiting for it seems to work fine! KLL
*/
while (!(i = NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ))
; // FIXME - no timeout
/*
* I know. i is certainly != 0 here but the loop is new. See previous
* comment.
*/
if (i) {
if (!((i = NCR5380_read(BUS_AND_STATUS_REG)) & BASR_END_DMA_TRANSFER))
printk(KERN_ERR "53C400w: No END OF DMA bit - WHOOPS! BASR=%0x\n", i);
} else
printk(KERN_ERR "53C400w: no 53C80 gated irq after transfer (last block)\n");
#if 0
if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_END_DMA_TRANSFER)) {
printk(KERN_ERR "53C400w: no end dma signal\n");
}
#endif
while (!(NCR5380_read(TARGET_COMMAND_REG) & TCR_LAST_BYTE_SENT))
; // TIMEOUT
return 0;
}
static int generic_NCR5380_dma_xfer_len(struct scsi_cmnd *cmd)
{
int transfersize = cmd->transfersize;
/* Limit transfers to 32K, for xx400 & xx406
* pseudoDMA that transfers in 128 bytes blocks.
*/
if (transfersize > 32 * 1024 && cmd->SCp.this_residual &&
!(cmd->SCp.this_residual % transfersize))
transfersize = 32 * 1024;
return transfersize;
}
#endif /* PSEUDO_DMA */
/*
* Include the NCR5380 core code that we build our driver around
*/
#include "NCR5380.c"
static struct scsi_host_template driver_template = {
.proc_name = DRV_MODULE_NAME,
.name = "Generic NCR5380/NCR53C400 SCSI",
.detect = generic_NCR5380_detect,
.release = generic_NCR5380_release_resources,
.info = generic_NCR5380_info,
.queuecommand = generic_NCR5380_queue_command,
.eh_abort_handler = generic_NCR5380_abort,
.eh_bus_reset_handler = generic_NCR5380_bus_reset,
.bios_param = NCR5380_BIOSPARAM,
.can_queue = 16,
.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"
module_param(ncr_irq, int, 0);
module_param(ncr_dma, int, 0);
module_param(ncr_addr, int, 0);
module_param(ncr_5380, int, 0);
module_param(ncr_53c400, int, 0);
module_param(ncr_53c400a, int, 0);
module_param(dtc_3181e, int, 0);
MODULE_LICENSE("GPL");
#if !defined(SCSI_G_NCR5380_MEM) && defined(MODULE)
static struct isapnp_device_id id_table[] = {
{
ISAPNP_ANY_ID, ISAPNP_ANY_ID,
ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e),
0},
{0}
};
MODULE_DEVICE_TABLE(isapnp, id_table);
#endif
__setup("ncr5380=", do_NCR5380_setup);
__setup("ncr53c400=", do_NCR53C400_setup);
__setup("ncr53c400a=", do_NCR53C400A_setup);
__setup("dtc3181e=", do_DTC3181E_setup);
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