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提交 92efbb85 编写于 作者: C Christoph Hellwig 提交者： Martin K. Petersen
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scsi: dtc: remove from tree 

The driver has not seen any maintainer activity or other work that
wasn't tree wide conversion or clenaups in the entire history of
the git tree.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NHannes Reinicke <hare@suse.de>
Acked-by: NFinn Thain <fthain@telegraphics.com.au>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
上级 f95819a0
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Documentation/scsi/dtc3x80.txt 已删除 100644 → 0
浏览文件 @ f95819a0
README file for the Linux DTC3180/3280 scsi driver.
by Ray Van Tassle (rayvt@comm.mot.com) March 1996
Based on the generic & core NCR5380 code by Drew Eckhard
SCSI device driver for the DTC 3180/3280.
Data Technology Corp---a division of Qume.
The 3280 has a standard floppy interface.
The 3180 does not. Otherwise, they are identical.
The DTC3x80 does not support DMA but it does have Pseudo-DMA which is
supported by the driver.
Its DTC406 scsi chip is supposedly compatible with the NCR 53C400.
It is memory mapped, uses an IRQ, but no dma or io-port. There is
internal DMA, between SCSI bus and an on-chip 128-byte buffer. Double
buffering is done automagically by the chip. Data is transferred
between the on-chip buffer and CPU/RAM via memory moves.
The driver detects the possible memory addresses (jumper selectable):
CC00, DC00, C800, and D800
The possible IRQ's (jumper selectable) are:
IRQ 10, 11, 12, 15
Parity is supported by the chip, but not by this driver.
Information can be obtained from /proc/scsi/dtc3c80/N.
Note on interrupts:
The documentation says that it can be set to interrupt whenever the
on-chip buffer needs CPU attention. I couldn't get this to work. So
the driver polls for data-ready in the pseudo-DMA transfer routine.
The interrupt support routines in the NCR3280.c core modules handle
scsi disconnect/reconnect, and this (mostly) works. However..... I
have tested it with 4 totally different hard drives (both SCSI-1 and
SCSI-2), and one CDROM drive. Interrupts works great for all but one
specific hard drive. For this one, the driver will eventually hang in
the transfer state. I have tested with: "dd bs=4k count=2k
of=/dev/null if=/dev/sdb". It reads ok for a while, then hangs.
After beating my head against this for a couple of weeks, getting
nowhere, I give up. So.....This driver does NOT use interrupts, even
if you have the card jumpered to an IRQ. Probably nobody will ever
care.
Documentation/scsi/scsi-parameters.txt
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......@@ -34,9 +34,6 @@ parameters may be changed at runtime by the command
See drivers/scsi/BusLogic.c, comment before function
BusLogic_ParseDriverOptions().
dtc3181e= [HW,SCSI]
See Documentation/scsi/g_NCR5380.txt.
eata= [HW,SCSI]
fdomain= [HW,SCSI]
......
MAINTAINERS
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......@@ -8042,13 +8042,11 @@ M: Michael Schmitz <schmitzmic@gmail.com>
L: linux-scsi@vger.kernel.org
S: Maintained
F: Documentation/scsi/g_NCR5380.txt
F: Documentation/scsi/dtc3x80.txt
F: drivers/scsi/NCR5380.*
F: drivers/scsi/arm/cumana_1.c
F: drivers/scsi/arm/oak.c
F: drivers/scsi/atari_scsi.*
F: drivers/scsi/dmx3191d.c
F: drivers/scsi/dtc.*
F: drivers/scsi/g_NCR5380.*
F: drivers/scsi/g_NCR5380_mmio.c
F: drivers/scsi/mac_scsi.*
......
drivers/scsi/Kconfig
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......@@ -637,20 +637,6 @@ config SCSI_DMX3191D
To compile this driver as a module, choose M here: the
module will be called dmx3191d.
config SCSI_DTC3280
tristate "DTC3180/3280 SCSI support"
depends on ISA && SCSI
select SCSI_SPI_ATTRS
select CHECK_SIGNATURE
help
This is support for DTC 3180/3280 SCSI Host Adapters. Please read
the SCSI-HOWTO, available from
<http://www.tldp.org/docs.html#howto>, and the file
<file:Documentation/scsi/dtc3x80.txt>.
To compile this driver as a module, choose M here: the
module will be called dtc.
config SCSI_EATA
tristate "EATA ISA/EISA/PCI (DPT and generic EATA/DMA-compliant boards) support"
depends on (ISA || EISA || PCI) && SCSI && ISA_DMA_API
......
drivers/scsi/Makefile
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......@@ -90,7 +90,6 @@ obj-$(CONFIG_SCSI_CHELSIO_FCOE) += csiostor/
obj-$(CONFIG_SCSI_DMX3191D) += dmx3191d.o
obj-$(CONFIG_SCSI_HPSA) += hpsa.o
obj-$(CONFIG_SCSI_SMARTPQI) += smartpqi/
obj-$(CONFIG_SCSI_DTC3280) += dtc.o
obj-$(CONFIG_SCSI_SYM53C8XX_2) += sym53c8xx_2/
obj-$(CONFIG_SCSI_ZALON) += zalon7xx.o
obj-$(CONFIG_SCSI_EATA_PIO) += eata_pio.o
......
drivers/scsi/dtc.c 已删除 100644 → 0
浏览文件 @ f95819a0
/*
* DTC 3180/3280 driver, by
* Ray Van Tassle rayvt@comm.mot.com
*
* taken from ...
* Trantor T128/T128F/T228 driver by...
*
* Drew Eckhardt
* Visionary Computing
* (Unix and Linux consulting and custom programming)
* drew@colorado.edu
* +1 (303) 440-4894
*/
/*
* The card is detected and initialized in one of several ways :
* 1. Autoprobe (default) - since the board is memory mapped,
* a BIOS signature is scanned for to locate the registers.
* An interrupt is triggered to autoprobe for the interrupt
* line.
*
* 2. With command line overrides - dtc=address,irq may be
* used on the LILO command line to override the defaults.
*
*/
/*----------------------------------------------------------------*/
/* the following will set the monitor border color (useful to find
where something crashed or gets stuck at */
/* 1 = blue
2 = green
3 = cyan
4 = red
5 = magenta
6 = yellow
7 = white
*/
#if 0
#define rtrc(i) {inb(0x3da); outb(0x31, 0x3c0); outb((i), 0x3c0);}
#else
#define rtrc(i) {}
#endif
#include <linux/module.h>
#include <linux/blkdev.h>
#include <linux/string.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <scsi/scsi_host.h>
#include "dtc.h"
#include "NCR5380.h"
/*
* The DTC3180 & 3280 boards are memory mapped.
*
*/
/*
*/
/* Offset from DTC_5380_OFFSET */
#define DTC_CONTROL_REG 0x100 /* rw */
#define D_CR_ACCESS 0x80 /* ro set=can access 3280 registers */
#define CSR_DIR_READ 0x40 /* rw direction, 1 = read 0 = write */
#define CSR_RESET 0x80 /* wo Resets 53c400 */
#define CSR_5380_REG 0x80 /* ro 5380 registers can be accessed */
#define CSR_TRANS_DIR 0x40 /* rw Data transfer direction */
#define CSR_SCSI_BUFF_INTR 0x20 /* rw Enable int on transfer ready */
#define CSR_5380_INTR 0x10 /* rw Enable 5380 interrupts */
#define CSR_SHARED_INTR 0x08 /* rw Interrupt sharing */
#define CSR_HOST_BUF_NOT_RDY 0x04 /* ro Host buffer not ready */
#define CSR_SCSI_BUF_RDY 0x02 /* ro SCSI buffer ready */
#define CSR_GATED_5380_IRQ 0x01 /* ro Last block xferred */
#define CSR_INT_BASE (CSR_SCSI_BUFF_INTR | CSR_5380_INTR)
#define DTC_BLK_CNT 0x101 /* rw
* # of 128-byte blocks to transfer */
#define D_CR_ACCESS 0x80 /* ro set=can access 3280 registers */
#define DTC_SWITCH_REG 0x3982 /* ro - DIP switches */
#define DTC_RESUME_XFER 0x3982 /* wo - resume data xfer
* after disconnect/reconnect*/
#define DTC_5380_OFFSET 0x3880 /* 8 registers here, see NCR5380.h */
/*!!!! for dtc, it's a 128 byte buffer at 3900 !!! */
#define DTC_DATA_BUF 0x3900 /* rw 128 bytes long */
static struct override {
unsigned int address;
int irq;
} overrides
#ifdef OVERRIDE
[] __initdata = 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 long address;
int noauto;
} bases[] __initdata = {
{ 0xcc000, 0 },
{ 0xc8000, 0 },
{ 0xdc000, 0 },
{ 0xd8000, 0 }
};
#define NO_BASES ARRAY_SIZE(bases)
static const struct signature {
const char *string;
int offset;
} signatures[] = {
{"DATA TECHNOLOGY CORPORATION BIOS", 0x25},
};
#define NO_SIGNATURES ARRAY_SIZE(signatures)
#ifndef MODULE
/*
* Function : dtc_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 dtc_setup(char *str)
{
static int commandline_current;
int i;
int ints[10];
get_options(str, ARRAY_SIZE(ints), ints);
if (ints[0] != 2)
printk("dtc_setup: usage dtc=address,irq\n");
else if (commandline_current < NO_OVERRIDES) {
overrides[commandline_current].address = ints[1];
overrides[commandline_current].irq = ints[2];
for (i = 0; i < NO_BASES; ++i)
if (bases[i].address == ints[1]) {
bases[i].noauto = 1;
break;
}
++commandline_current;
}
return 1;
}
__setup("dtc=", dtc_setup);
#endif
/*
* Function : int dtc_detect(struct scsi_host_template * tpnt)
*
* Purpose : detects and initializes DTC 3180/3280 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 dtc_detect(struct scsi_host_template * tpnt)
{
static int current_override, current_base;
struct Scsi_Host *instance;
unsigned int addr;
void __iomem *base;
int sig, count;
for (count = 0; current_override < NO_OVERRIDES; ++current_override) {
addr = 0;
base = NULL;
if (overrides[current_override].address) {
addr = overrides[current_override].address;
base = ioremap(addr, 0x2000);
if (!base)
addr = 0;
} else
for (; !addr && (current_base < NO_BASES); ++current_base) {
dprintk(NDEBUG_INIT, "dtc: probing address 0x%08x\n",
(unsigned int)bases[current_base].address);
if (bases[current_base].noauto)
continue;
base = ioremap(bases[current_base].address, 0x2000);
if (!base)
continue;
for (sig = 0; sig < NO_SIGNATURES; ++sig) {
if (check_signature(base + signatures[sig].offset, signatures[sig].string, strlen(signatures[sig].string))) {
addr = bases[current_base].address;
dprintk(NDEBUG_INIT, "dtc: detected board\n");
goto found;
}
}
iounmap(base);
}
dprintk(NDEBUG_INIT, "dtc: addr = 0x%08x\n", addr);
if (!addr)
break;
found:
instance = scsi_register(tpnt, sizeof(struct NCR5380_hostdata));
if (instance == NULL)
goto out_unmap;
instance->base = addr;
((struct NCR5380_hostdata *)(instance)->hostdata)->base = base;
if (NCR5380_init(instance, FLAG_LATE_DMA_SETUP))
goto out_unregister;
NCR5380_maybe_reset_bus(instance);
NCR5380_write(DTC_CONTROL_REG, CSR_5380_INTR); /* Enable int's */
if (overrides[current_override].irq != IRQ_AUTO)
instance->irq = overrides[current_override].irq;
else
instance->irq = NCR5380_probe_irq(instance, DTC_IRQS);
/* Compatibility with documented NCR5380 kernel parameters */
if (instance->irq == 255)
instance->irq = NO_IRQ;
/* With interrupts enabled, it will sometimes hang when doing heavy
* reads. So better not enable them until I finger it out. */
instance->irq = NO_IRQ;
if (instance->irq != NO_IRQ)
if (request_irq(instance->irq, dtc_intr, 0,
"dtc", instance)) {
printk(KERN_ERR "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_WARNING "scsi%d : interrupts not enabled. for better interactive performance,\n", instance->host_no);
printk(KERN_WARNING "scsi%d : please jumper the board for a free IRQ.\n", instance->host_no);
}
dprintk(NDEBUG_INIT, "scsi%d : irq = %d\n",
instance->host_no, instance->irq);
++current_override;
++count;
}
return count;
out_unregister:
scsi_unregister(instance);
out_unmap:
iounmap(base);
return count;
}
/*
* Function : int dtc_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 dtc_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;
return 0;
}
/****************************************************************
* Function : int NCR5380_pread (struct Scsi_Host *instance,
* unsigned char *dst, int len)
*
* Purpose : Fast 5380 pseudo-dma read function, reads 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 dtc_pread(struct Scsi_Host *instance,
unsigned char *dst, int len)
{
unsigned char *d = dst;
int i; /* For counting time spent in the poll-loop */
struct NCR5380_hostdata *hostdata = shost_priv(instance);
i = 0;
if (instance->irq == NO_IRQ)
NCR5380_write(DTC_CONTROL_REG, CSR_DIR_READ);
else
NCR5380_write(DTC_CONTROL_REG, CSR_DIR_READ | CSR_INT_BASE);
NCR5380_write(DTC_BLK_CNT, len >> 7); /* Block count */
rtrc(1);
while (len > 0) {
rtrc(2);
while (NCR5380_read(DTC_CONTROL_REG) & CSR_HOST_BUF_NOT_RDY)
++i;
rtrc(3);
memcpy_fromio(d, hostdata->base + DTC_DATA_BUF, 128);
d += 128;
len -= 128;
rtrc(7);
/*** with int's on, it sometimes hangs after here.
* Looks like something makes HBNR go away. */
}
rtrc(4);
while (!(NCR5380_read(DTC_CONTROL_REG) & D_CR_ACCESS))
++i;
rtrc(0);
return (0);
}
/****************************************************************
* Function : int NCR5380_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 dtc_pwrite(struct Scsi_Host *instance,
unsigned char *src, int len)
{
int i;
struct NCR5380_hostdata *hostdata = shost_priv(instance);
if (instance->irq == NO_IRQ)
NCR5380_write(DTC_CONTROL_REG, 0);
else
NCR5380_write(DTC_CONTROL_REG, CSR_5380_INTR);
NCR5380_write(DTC_BLK_CNT, len >> 7); /* Block count */
for (i = 0; len > 0; ++i) {
rtrc(5);
/* Poll until the host buffer can accept data. */
while (NCR5380_read(DTC_CONTROL_REG) & CSR_HOST_BUF_NOT_RDY)
++i;
rtrc(3);
memcpy_toio(hostdata->base + DTC_DATA_BUF, src, 128);
src += 128;
len -= 128;
}
rtrc(4);
while (!(NCR5380_read(DTC_CONTROL_REG) & D_CR_ACCESS))
++i;
rtrc(6);
/* Wait until the last byte has been sent to the disk */
while (!(NCR5380_read(TARGET_COMMAND_REG) & TCR_LAST_BYTE_SENT))
++i;
rtrc(7);
/* Check for parity error here. fixme. */
rtrc(0);
return (0);
}
static int dtc_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;
}
MODULE_LICENSE("GPL");
#include "NCR5380.c"
static int dtc_release(struct Scsi_Host *shost)
{
struct NCR5380_hostdata *hostdata = shost_priv(shost);
if (shost->irq != NO_IRQ)
free_irq(shost->irq, shost);
NCR5380_exit(shost);
scsi_unregister(shost);
iounmap(hostdata->base);
return 0;
}
static struct scsi_host_template driver_template = {
.name = "DTC 3180/3280",
.detect = dtc_detect,
.release = dtc_release,
.proc_name = "dtc3x80",
.info = dtc_info,
.queuecommand = dtc_queue_command,
.eh_abort_handler = dtc_abort,
.eh_bus_reset_handler = dtc_bus_reset,
.bios_param = dtc_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"
drivers/scsi/dtc.h 已删除 100644 → 0
浏览文件 @ f95819a0
/*
* DTC controller, taken from T128 driver by...
* Copyright 1993, Drew Eckhardt
* Visionary Computing
* (Unix and Linux consulting and custom programming)
* drew@colorado.edu
* +1 (303) 440-4894
*/
#ifndef DTC3280_H
#define DTC3280_H
#define NCR5380_implementation_fields \
void __iomem *base
#define DTC_address(reg) \
(((struct NCR5380_hostdata *)shost_priv(instance))->base + DTC_5380_OFFSET + reg)
#define NCR5380_read(reg) (readb(DTC_address(reg)))
#define NCR5380_write(reg, value) (writeb(value, DTC_address(reg)))
#define NCR5380_dma_xfer_len(instance, cmd, phase) \
dtc_dma_xfer_len(cmd)
#define NCR5380_dma_recv_setup dtc_pread
#define NCR5380_dma_send_setup dtc_pwrite
#define NCR5380_dma_residual(instance) (0)
#define NCR5380_intr dtc_intr
#define NCR5380_queue_command dtc_queue_command
#define NCR5380_abort dtc_abort
#define NCR5380_bus_reset dtc_bus_reset
#define NCR5380_info dtc_info
#define NCR5380_io_delay(x) udelay(x)
/* 15 12 11 10
1001 1100 0000 0000 */
#define DTC_IRQS 0x9c00
#endif /* DTC3280_H */
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