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: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinicke <hare@suse.de>
Acked-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

7 files changed, 0 insertions, 552 deletions

diff --git a/Documentation/scsi/dtc3x80.txt b/Documentation/scsi/dtc3x80.txt
deleted file mode 100644
index 1d7af9f9a8ed..000000000000
--- a/Documentation/scsi/dtc3x80.txt
+++ /dev/null
@@ -1,43 +0,0 @@
-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.
diff --git a/Documentation/scsi/scsi-parameters.txt b/Documentation/scsi/scsi-parameters.txt
index 00a03c0cd8c2..8e66dafa41e1 100644
--- a/Documentation/scsi/scsi-parameters.txt
+++ b/Documentation/scsi/scsi-parameters.txt
@@ -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]
diff --git a/MAINTAINERS b/MAINTAINERS
index e4ec1b8abbb7..48f2b480ac6e 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -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.*
diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig
index a38e37cd722c..3e2bdb90813c 100644
--- a/drivers/scsi/Kconfig
+++ b/drivers/scsi/Kconfig
@@ -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
diff --git a/drivers/scsi/Makefile b/drivers/scsi/Makefile
index 392609a1190a..38d938d7fe67 100644
--- a/drivers/scsi/Makefile
+++ b/drivers/scsi/Makefile
@@ -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
diff --git a/drivers/scsi/dtc.c b/drivers/scsi/dtc.c
deleted file mode 100644
index 459863f94e46..000000000000
--- a/drivers/scsi/dtc.c
+++ /dev/null
@@ -1,447 +0,0 @@
-/*
- * 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"
diff --git a/drivers/scsi/dtc.h b/drivers/scsi/dtc.h
deleted file mode 100644
index fcb0a8ea7bda..000000000000
--- a/drivers/scsi/dtc.h
+++ /dev/null
@@ -1,42 +0,0 @@
-/*
- * 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 */