forked from luck/tmp_suning_uos_patched
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>
This commit is contained in:
Christoph Hellwig
Martin K. Petersen
parent
f95819a09c
commit
92efbb8500
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@ -1,43 +0,0 @@
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README file for the Linux DTC3180/3280 scsi driver.
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by Ray Van Tassle (rayvt@comm.mot.com) March 1996
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Based on the generic & core NCR5380 code by Drew Eckhard
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SCSI device driver for the DTC 3180/3280.
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Data Technology Corp---a division of Qume.
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The 3280 has a standard floppy interface.
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The 3180 does not. Otherwise, they are identical.
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The DTC3x80 does not support DMA but it does have Pseudo-DMA which is
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supported by the driver.
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Its DTC406 scsi chip is supposedly compatible with the NCR 53C400.
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It is memory mapped, uses an IRQ, but no dma or io-port. There is
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internal DMA, between SCSI bus and an on-chip 128-byte buffer. Double
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buffering is done automagically by the chip. Data is transferred
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between the on-chip buffer and CPU/RAM via memory moves.
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The driver detects the possible memory addresses (jumper selectable):
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CC00, DC00, C800, and D800
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The possible IRQ's (jumper selectable) are:
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IRQ 10, 11, 12, 15
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Parity is supported by the chip, but not by this driver.
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Information can be obtained from /proc/scsi/dtc3c80/N.
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Note on interrupts:
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The documentation says that it can be set to interrupt whenever the
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on-chip buffer needs CPU attention. I couldn't get this to work. So
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the driver polls for data-ready in the pseudo-DMA transfer routine.
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The interrupt support routines in the NCR3280.c core modules handle
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scsi disconnect/reconnect, and this (mostly) works. However..... I
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have tested it with 4 totally different hard drives (both SCSI-1 and
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SCSI-2), and one CDROM drive. Interrupts works great for all but one
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specific hard drive. For this one, the driver will eventually hang in
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the transfer state. I have tested with: "dd bs=4k count=2k
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of=/dev/null if=/dev/sdb". It reads ok for a while, then hangs.
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After beating my head against this for a couple of weeks, getting
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nowhere, I give up. So.....This driver does NOT use interrupts, even
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if you have the card jumpered to an IRQ. Probably nobody will ever
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care.
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@ -34,9 +34,6 @@ parameters may be changed at runtime by the command
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See drivers/scsi/BusLogic.c, comment before function
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BusLogic_ParseDriverOptions().
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dtc3181e= [HW,SCSI]
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See Documentation/scsi/g_NCR5380.txt.
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eata= [HW,SCSI]
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fdomain= [HW,SCSI]
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@ -8042,13 +8042,11 @@ M: Michael Schmitz <schmitzmic@gmail.com>
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L: linux-scsi@vger.kernel.org
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S: Maintained
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F: Documentation/scsi/g_NCR5380.txt
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F: Documentation/scsi/dtc3x80.txt
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F: drivers/scsi/NCR5380.*
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F: drivers/scsi/arm/cumana_1.c
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F: drivers/scsi/arm/oak.c
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F: drivers/scsi/atari_scsi.*
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F: drivers/scsi/dmx3191d.c
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F: drivers/scsi/dtc.*
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F: drivers/scsi/g_NCR5380.*
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F: drivers/scsi/g_NCR5380_mmio.c
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F: drivers/scsi/mac_scsi.*
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@ -637,20 +637,6 @@ config SCSI_DMX3191D
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To compile this driver as a module, choose M here: the
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module will be called dmx3191d.
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config SCSI_DTC3280
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tristate "DTC3180/3280 SCSI support"
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depends on ISA && SCSI
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select SCSI_SPI_ATTRS
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select CHECK_SIGNATURE
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help
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This is support for DTC 3180/3280 SCSI Host Adapters. Please read
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the SCSI-HOWTO, available from
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<http://www.tldp.org/docs.html#howto>, and the file
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<file:Documentation/scsi/dtc3x80.txt>.
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To compile this driver as a module, choose M here: the
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module will be called dtc.
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config SCSI_EATA
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tristate "EATA ISA/EISA/PCI (DPT and generic EATA/DMA-compliant boards) support"
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depends on (ISA || EISA || PCI) && SCSI && ISA_DMA_API
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@ -90,7 +90,6 @@ obj-$(CONFIG_SCSI_CHELSIO_FCOE) += csiostor/
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obj-$(CONFIG_SCSI_DMX3191D) += dmx3191d.o
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obj-$(CONFIG_SCSI_HPSA) += hpsa.o
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obj-$(CONFIG_SCSI_SMARTPQI) += smartpqi/
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obj-$(CONFIG_SCSI_DTC3280) += dtc.o
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obj-$(CONFIG_SCSI_SYM53C8XX_2) += sym53c8xx_2/
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obj-$(CONFIG_SCSI_ZALON) += zalon7xx.o
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obj-$(CONFIG_SCSI_EATA_PIO) += eata_pio.o
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@ -1,447 +0,0 @@
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/*
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* DTC 3180/3280 driver, by
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* Ray Van Tassle rayvt@comm.mot.com
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*
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* taken from ...
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* Trantor T128/T128F/T228 driver by...
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*
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* Drew Eckhardt
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* Visionary Computing
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* (Unix and Linux consulting and custom programming)
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* drew@colorado.edu
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* +1 (303) 440-4894
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*/
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/*
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* The card is detected and initialized in one of several ways :
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* 1. Autoprobe (default) - since the board is memory mapped,
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* a BIOS signature is scanned for to locate the registers.
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* An interrupt is triggered to autoprobe for the interrupt
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* line.
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*
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* 2. With command line overrides - dtc=address,irq may be
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* used on the LILO command line to override the defaults.
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*
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*/
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/*----------------------------------------------------------------*/
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/* the following will set the monitor border color (useful to find
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where something crashed or gets stuck at */
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/* 1 = blue
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2 = green
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3 = cyan
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4 = red
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5 = magenta
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6 = yellow
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7 = white
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*/
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#if 0
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#define rtrc(i) {inb(0x3da); outb(0x31, 0x3c0); outb((i), 0x3c0);}
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#else
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#define rtrc(i) {}
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#endif
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#include <linux/module.h>
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#include <linux/blkdev.h>
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#include <linux/string.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/io.h>
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#include <scsi/scsi_host.h>
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#include "dtc.h"
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#include "NCR5380.h"
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/*
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* The DTC3180 & 3280 boards are memory mapped.
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*
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*/
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/*
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*/
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/* Offset from DTC_5380_OFFSET */
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#define DTC_CONTROL_REG 0x100 /* rw */
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#define D_CR_ACCESS 0x80 /* ro set=can access 3280 registers */
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#define CSR_DIR_READ 0x40 /* rw direction, 1 = read 0 = write */
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#define CSR_RESET 0x80 /* wo Resets 53c400 */
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#define CSR_5380_REG 0x80 /* ro 5380 registers can be accessed */
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#define CSR_TRANS_DIR 0x40 /* rw Data transfer direction */
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#define CSR_SCSI_BUFF_INTR 0x20 /* rw Enable int on transfer ready */
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#define CSR_5380_INTR 0x10 /* rw Enable 5380 interrupts */
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#define CSR_SHARED_INTR 0x08 /* rw Interrupt sharing */
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#define CSR_HOST_BUF_NOT_RDY 0x04 /* ro Host buffer not ready */
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#define CSR_SCSI_BUF_RDY 0x02 /* ro SCSI buffer ready */
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#define CSR_GATED_5380_IRQ 0x01 /* ro Last block xferred */
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#define CSR_INT_BASE (CSR_SCSI_BUFF_INTR | CSR_5380_INTR)
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#define DTC_BLK_CNT 0x101 /* rw
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* # of 128-byte blocks to transfer */
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#define D_CR_ACCESS 0x80 /* ro set=can access 3280 registers */
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#define DTC_SWITCH_REG 0x3982 /* ro - DIP switches */
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#define DTC_RESUME_XFER 0x3982 /* wo - resume data xfer
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* after disconnect/reconnect*/
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#define DTC_5380_OFFSET 0x3880 /* 8 registers here, see NCR5380.h */
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/*!!!! for dtc, it's a 128 byte buffer at 3900 !!! */
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#define DTC_DATA_BUF 0x3900 /* rw 128 bytes long */
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static struct override {
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unsigned int address;
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int irq;
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} overrides
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#ifdef OVERRIDE
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[] __initdata = OVERRIDE;
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#else
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[4] __initdata = {
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{ 0, IRQ_AUTO }, { 0, IRQ_AUTO }, { 0, IRQ_AUTO }, { 0, IRQ_AUTO }
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};
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#endif
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#define NO_OVERRIDES ARRAY_SIZE(overrides)
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static struct base {
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unsigned long address;
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int noauto;
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} bases[] __initdata = {
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{ 0xcc000, 0 },
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{ 0xc8000, 0 },
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{ 0xdc000, 0 },
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{ 0xd8000, 0 }
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};
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#define NO_BASES ARRAY_SIZE(bases)
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static const struct signature {
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const char *string;
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int offset;
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} signatures[] = {
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{"DATA TECHNOLOGY CORPORATION BIOS", 0x25},
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};
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#define NO_SIGNATURES ARRAY_SIZE(signatures)
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#ifndef MODULE
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/*
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* Function : dtc_setup(char *str, int *ints)
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*
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* Purpose : LILO command line initialization of the overrides array,
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*
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* Inputs : str - unused, ints - array of integer parameters with ints[0]
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* equal to the number of ints.
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*
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*/
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static int __init dtc_setup(char *str)
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{
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static int commandline_current;
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int i;
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int ints[10];
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get_options(str, ARRAY_SIZE(ints), ints);
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if (ints[0] != 2)
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printk("dtc_setup: usage dtc=address,irq\n");
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else if (commandline_current < NO_OVERRIDES) {
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overrides[commandline_current].address = ints[1];
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overrides[commandline_current].irq = ints[2];
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for (i = 0; i < NO_BASES; ++i)
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if (bases[i].address == ints[1]) {
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bases[i].noauto = 1;
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break;
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}
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++commandline_current;
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}
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return 1;
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}
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__setup("dtc=", dtc_setup);
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#endif
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/*
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* Function : int dtc_detect(struct scsi_host_template * tpnt)
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*
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* Purpose : detects and initializes DTC 3180/3280 controllers
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* that were autoprobed, overridden on the LILO command line,
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* or specified at compile time.
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*
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* Inputs : tpnt - template for this SCSI adapter.
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*
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* Returns : 1 if a host adapter was found, 0 if not.
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*
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*/
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static int __init dtc_detect(struct scsi_host_template * tpnt)
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{
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static int current_override, current_base;
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struct Scsi_Host *instance;
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unsigned int addr;
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void __iomem *base;
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int sig, count;
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for (count = 0; current_override < NO_OVERRIDES; ++current_override) {
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addr = 0;
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base = NULL;
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if (overrides[current_override].address) {
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addr = overrides[current_override].address;
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base = ioremap(addr, 0x2000);
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if (!base)
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addr = 0;
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} else
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for (; !addr && (current_base < NO_BASES); ++current_base) {
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dprintk(NDEBUG_INIT, "dtc: probing address 0x%08x\n",
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(unsigned int)bases[current_base].address);
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if (bases[current_base].noauto)
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continue;
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base = ioremap(bases[current_base].address, 0x2000);
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if (!base)
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continue;
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for (sig = 0; sig < NO_SIGNATURES; ++sig) {
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if (check_signature(base + signatures[sig].offset, signatures[sig].string, strlen(signatures[sig].string))) {
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addr = bases[current_base].address;
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dprintk(NDEBUG_INIT, "dtc: detected board\n");
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goto found;
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}
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}
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iounmap(base);
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}
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dprintk(NDEBUG_INIT, "dtc: addr = 0x%08x\n", addr);
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if (!addr)
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break;
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found:
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instance = scsi_register(tpnt, sizeof(struct NCR5380_hostdata));
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if (instance == NULL)
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goto out_unmap;
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instance->base = addr;
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((struct NCR5380_hostdata *)(instance)->hostdata)->base = base;
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if (NCR5380_init(instance, FLAG_LATE_DMA_SETUP))
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goto out_unregister;
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NCR5380_maybe_reset_bus(instance);
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NCR5380_write(DTC_CONTROL_REG, CSR_5380_INTR); /* Enable int's */
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if (overrides[current_override].irq != IRQ_AUTO)
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instance->irq = overrides[current_override].irq;
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else
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instance->irq = NCR5380_probe_irq(instance, DTC_IRQS);
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/* Compatibility with documented NCR5380 kernel parameters */
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if (instance->irq == 255)
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instance->irq = NO_IRQ;
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/* With interrupts enabled, it will sometimes hang when doing heavy
|
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* reads. So better not enable them until I finger it out. */
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instance->irq = NO_IRQ;
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if (instance->irq != NO_IRQ)
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if (request_irq(instance->irq, dtc_intr, 0,
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"dtc", instance)) {
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printk(KERN_ERR "scsi%d : IRQ%d not free, interrupts disabled\n", instance->host_no, instance->irq);
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instance->irq = NO_IRQ;
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}
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if (instance->irq == NO_IRQ) {
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printk(KERN_WARNING "scsi%d : interrupts not enabled. for better interactive performance,\n", instance->host_no);
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printk(KERN_WARNING "scsi%d : please jumper the board for a free IRQ.\n", instance->host_no);
|
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}
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dprintk(NDEBUG_INIT, "scsi%d : irq = %d\n",
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instance->host_no, instance->irq);
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++current_override;
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++count;
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}
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return count;
|
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out_unregister:
|
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scsi_unregister(instance);
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out_unmap:
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iounmap(base);
|
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return count;
|
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}
|
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|
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/*
|
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* Function : int dtc_biosparam(Disk * disk, struct block_device *dev, int *ip)
|
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*
|
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* Purpose : Generates a BIOS / DOS compatible H-C-S mapping for
|
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* the specified device / size.
|
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*
|
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* Inputs : size = size of device in sectors (512 bytes), dev = block device
|
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* major / minor, ip[] = {heads, sectors, cylinders}
|
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*
|
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* Returns : always 0 (success), initializes ip
|
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*
|
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*/
|
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|
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/*
|
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* 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
|
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* and matching the H_C_S coordinates to what DOS uses.
|
||||
*/
|
||||
|
||||
static int dtc_biosparam(struct scsi_device *sdev, struct block_device *dev,
|
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sector_t capacity, int *ip)
|
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{
|
||||
int size = capacity;
|
||||
|
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ip[0] = 64;
|
||||
ip[1] = 32;
|
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ip[2] = size >> 11;
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
/****************************************************************
|
||||
* Function : int NCR5380_pread (struct Scsi_Host *instance,
|
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* 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"
|
||||
|
|
@ -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 */
|
||||
Loading…
Reference in New Issue
Block a user