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>

Documentation/scsi/dtc3x80.txt

-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

@@ -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

@@ -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

@@ -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

@@ -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.h

-/*
- * 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 */