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![Ondrej Zary](/assets/img/avatar_default.png)
HP C2502 cards (based on 53C400A chips) use different magic numbers for software-based I/O address configuration than other cards. The configuration is also extended to allow setting the IRQ. Move the configuration to a new function magic_configure() and move magic the magic numbers into an array. Add new magic numbers for these HP cards and hp_c2502 module parameter to use them, e.g.: modprobe g_NCR5380 ncr_irq=7 ncr_addr=0x280 hp_c2502=1 Tested with HP C2502 and DTCT-436P. Signed-off-by: Ondrej Zary <linux@rainbow-software.org> Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
813 lines
21 KiB
C
813 lines
21 KiB
C
/*
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* Generic Generic NCR5380 driver
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*
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* Copyright 1993, 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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* NCR53C400 extensions (c) 1994,1995,1996, Kevin Lentin
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* K.Lentin@cs.monash.edu.au
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*
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* NCR53C400A extensions (c) 1996, Ingmar Baumgart
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* ingmar@gonzo.schwaben.de
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*
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* DTC3181E extensions (c) 1997, Ronald van Cuijlenborg
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* ronald.van.cuijlenborg@tip.nl or nutty@dds.nl
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*
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* Added ISAPNP support for DTC436 adapters,
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* Thomas Sailer, sailer@ife.ee.ethz.ch
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*/
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/*
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* TODO : flesh out DMA support, find some one actually using this (I have
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* a memory mapped Trantor board that works fine)
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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. With command line overrides - NCR5380=port,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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* 2. With the GENERIC_NCR5380_OVERRIDE compile time define. This is
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* specified as an array of address, irq, dma, board tuples. Ie, for
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* one board at 0x350, IRQ5, no dma, I could say
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* -DGENERIC_NCR5380_OVERRIDE={{0xcc000, 5, DMA_NONE, BOARD_NCR5380}}
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*
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* -1 should be specified for no or DMA interrupt, -2 to autoprobe for an
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* IRQ line if overridden on the command line.
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*
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* 3. When included as a module, with arguments passed on the command line:
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* ncr_irq=xx the interrupt
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* ncr_addr=xx the port or base address (for port or memory
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* mapped, resp.)
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* ncr_dma=xx the DMA
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* ncr_5380=1 to set up for a NCR5380 board
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* ncr_53c400=1 to set up for a NCR53C400 board
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* e.g.
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* modprobe g_NCR5380 ncr_irq=5 ncr_addr=0x350 ncr_5380=1
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* for a port mapped NCR5380 board or
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* modprobe g_NCR5380 ncr_irq=255 ncr_addr=0xc8000 ncr_53c400=1
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* for a memory mapped NCR53C400 board with interrupts disabled.
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*
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* 255 should be specified for no or DMA interrupt, 254 to autoprobe for an
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* IRQ line if overridden on the command line.
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*
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*/
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#define AUTOPROBE_IRQ
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#ifdef CONFIG_SCSI_GENERIC_NCR53C400
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#define PSEUDO_DMA
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#endif
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#include <asm/io.h>
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#include <linux/blkdev.h>
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#include <linux/module.h>
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#include <scsi/scsi_host.h>
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#include "g_NCR5380.h"
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#include "NCR5380.h"
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#include <linux/init.h>
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#include <linux/ioport.h>
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#include <linux/isapnp.h>
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#include <linux/interrupt.h>
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static int ncr_irq;
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static int ncr_dma;
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static int ncr_addr;
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static int ncr_5380;
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static int ncr_53c400;
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static int ncr_53c400a;
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static int dtc_3181e;
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static int hp_c2502;
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static struct override {
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NCR5380_map_type NCR5380_map_name;
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int irq;
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int dma;
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int board; /* Use NCR53c400, Ricoh, etc. extensions ? */
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} overrides
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#ifdef GENERIC_NCR5380_OVERRIDE
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[] __initdata = GENERIC_NCR5380_OVERRIDE;
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#else
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[1] __initdata = { { 0,},};
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#endif
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#define NO_OVERRIDES ARRAY_SIZE(overrides)
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#ifndef MODULE
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/**
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* internal_setup - handle lilo command string override
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* @board: BOARD_* identifier for the board
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* @str: unused
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* @ints: numeric parameters
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*
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* Do LILO command line initialization of the overrides array. Display
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* errors when needed
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*
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* Locks: none
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*/
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static void __init internal_setup(int board, char *str, int *ints)
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{
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static int commandline_current;
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switch (board) {
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case BOARD_NCR5380:
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if (ints[0] != 2 && ints[0] != 3) {
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printk(KERN_ERR "generic_NCR5380_setup : usage ncr5380=" STRVAL(NCR5380_map_name) ",irq,dma\n");
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return;
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}
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break;
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case BOARD_NCR53C400:
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if (ints[0] != 2) {
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printk(KERN_ERR "generic_NCR53C400_setup : usage ncr53c400=" STRVAL(NCR5380_map_name) ",irq\n");
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return;
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}
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break;
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case BOARD_NCR53C400A:
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if (ints[0] != 2) {
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printk(KERN_ERR "generic_NCR53C400A_setup : usage ncr53c400a=" STRVAL(NCR5380_map_name) ",irq\n");
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return;
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}
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break;
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case BOARD_DTC3181E:
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if (ints[0] != 2) {
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printk("generic_DTC3181E_setup : usage dtc3181e=" STRVAL(NCR5380_map_name) ",irq\n");
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return;
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}
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break;
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}
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if (commandline_current < NO_OVERRIDES) {
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overrides[commandline_current].NCR5380_map_name = (NCR5380_map_type) ints[1];
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overrides[commandline_current].irq = ints[2];
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if (ints[0] == 3)
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overrides[commandline_current].dma = ints[3];
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else
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overrides[commandline_current].dma = DMA_NONE;
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overrides[commandline_current].board = board;
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++commandline_current;
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}
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}
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/**
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* do_NCR53C80_setup - set up entry point
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* @str: unused
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*
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* Setup function invoked at boot to parse the ncr5380= command
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* line.
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*/
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static int __init do_NCR5380_setup(char *str)
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{
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int ints[10];
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get_options(str, ARRAY_SIZE(ints), ints);
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internal_setup(BOARD_NCR5380, str, ints);
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return 1;
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}
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/**
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* do_NCR53C400_setup - set up entry point
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* @str: unused
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* @ints: integer parameters from kernel setup code
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*
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* Setup function invoked at boot to parse the ncr53c400= command
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* line.
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*/
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static int __init do_NCR53C400_setup(char *str)
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{
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int ints[10];
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get_options(str, ARRAY_SIZE(ints), ints);
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internal_setup(BOARD_NCR53C400, str, ints);
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return 1;
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}
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/**
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* do_NCR53C400A_setup - set up entry point
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* @str: unused
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* @ints: integer parameters from kernel setup code
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*
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* Setup function invoked at boot to parse the ncr53c400a= command
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* line.
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*/
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static int __init do_NCR53C400A_setup(char *str)
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{
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int ints[10];
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get_options(str, ARRAY_SIZE(ints), ints);
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internal_setup(BOARD_NCR53C400A, str, ints);
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return 1;
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}
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/**
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* do_DTC3181E_setup - set up entry point
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* @str: unused
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* @ints: integer parameters from kernel setup code
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*
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* Setup function invoked at boot to parse the dtc3181e= command
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* line.
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*/
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static int __init do_DTC3181E_setup(char *str)
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{
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int ints[10];
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get_options(str, ARRAY_SIZE(ints), ints);
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internal_setup(BOARD_DTC3181E, str, ints);
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return 1;
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}
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#endif
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#ifndef SCSI_G_NCR5380_MEM
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/*
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* Configure I/O address of 53C400A or DTC436 by writing magic numbers
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* to ports 0x779 and 0x379.
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*/
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static void magic_configure(int idx, u8 irq, u8 magic[])
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{
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u8 cfg = 0;
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outb(magic[0], 0x779);
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outb(magic[1], 0x379);
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outb(magic[2], 0x379);
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outb(magic[3], 0x379);
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outb(magic[4], 0x379);
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/* allowed IRQs for HP C2502 */
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if (irq != 2 && irq != 3 && irq != 4 && irq != 5 && irq != 7)
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irq = 0;
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if (idx >= 0 && idx <= 7)
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cfg = 0x80 | idx | (irq << 4);
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outb(cfg, 0x379);
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}
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#endif
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/**
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* generic_NCR5380_detect - look for NCR5380 controllers
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* @tpnt: the scsi template
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*
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* Scan for the present of NCR5380, NCR53C400, NCR53C400A, DTC3181E
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* and DTC436(ISAPnP) controllers. If overrides have been set we use
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* them.
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*
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* Locks: none
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*/
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static int __init generic_NCR5380_detect(struct scsi_host_template *tpnt)
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{
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static int current_override;
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int count;
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unsigned int *ports;
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u8 *magic = NULL;
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#ifndef SCSI_G_NCR5380_MEM
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int i;
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int port_idx = -1;
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unsigned long region_size = 16;
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#endif
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static unsigned int __initdata ncr_53c400a_ports[] = {
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0x280, 0x290, 0x300, 0x310, 0x330, 0x340, 0x348, 0x350, 0
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};
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static unsigned int __initdata dtc_3181e_ports[] = {
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0x220, 0x240, 0x280, 0x2a0, 0x2c0, 0x300, 0x320, 0x340, 0
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};
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static u8 ncr_53c400a_magic[] __initdata = { /* 53C400A & DTC436 */
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0x59, 0xb9, 0xc5, 0xae, 0xa6
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};
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static u8 hp_c2502_magic[] __initdata = { /* HP C2502 */
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0x0f, 0x22, 0xf0, 0x20, 0x80
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};
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int flags;
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struct Scsi_Host *instance;
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struct NCR5380_hostdata *hostdata;
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#ifdef SCSI_G_NCR5380_MEM
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unsigned long base;
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void __iomem *iomem;
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#endif
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if (ncr_irq)
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overrides[0].irq = ncr_irq;
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if (ncr_dma)
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overrides[0].dma = ncr_dma;
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if (ncr_addr)
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overrides[0].NCR5380_map_name = (NCR5380_map_type) ncr_addr;
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if (ncr_5380)
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overrides[0].board = BOARD_NCR5380;
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else if (ncr_53c400)
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overrides[0].board = BOARD_NCR53C400;
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else if (ncr_53c400a)
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overrides[0].board = BOARD_NCR53C400A;
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else if (dtc_3181e)
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overrides[0].board = BOARD_DTC3181E;
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else if (hp_c2502)
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overrides[0].board = BOARD_HP_C2502;
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#ifndef SCSI_G_NCR5380_MEM
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if (!current_override && isapnp_present()) {
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struct pnp_dev *dev = NULL;
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count = 0;
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while ((dev = pnp_find_dev(NULL, ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e), dev))) {
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if (count >= NO_OVERRIDES)
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break;
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if (pnp_device_attach(dev) < 0)
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continue;
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if (pnp_activate_dev(dev) < 0) {
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printk(KERN_ERR "dtc436e probe: activate failed\n");
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pnp_device_detach(dev);
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continue;
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}
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if (!pnp_port_valid(dev, 0)) {
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printk(KERN_ERR "dtc436e probe: no valid port\n");
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pnp_device_detach(dev);
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continue;
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}
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if (pnp_irq_valid(dev, 0))
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overrides[count].irq = pnp_irq(dev, 0);
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else
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overrides[count].irq = NO_IRQ;
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if (pnp_dma_valid(dev, 0))
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overrides[count].dma = pnp_dma(dev, 0);
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else
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overrides[count].dma = DMA_NONE;
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overrides[count].NCR5380_map_name = (NCR5380_map_type) pnp_port_start(dev, 0);
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overrides[count].board = BOARD_DTC3181E;
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count++;
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}
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}
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#endif
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for (count = 0; current_override < NO_OVERRIDES; ++current_override) {
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if (!(overrides[current_override].NCR5380_map_name))
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continue;
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ports = NULL;
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flags = 0;
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switch (overrides[current_override].board) {
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case BOARD_NCR5380:
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flags = FLAG_NO_PSEUDO_DMA;
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break;
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case BOARD_NCR53C400:
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#ifdef PSEUDO_DMA
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flags = FLAG_NO_DMA_FIXUP;
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#endif
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break;
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case BOARD_NCR53C400A:
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flags = FLAG_NO_DMA_FIXUP;
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ports = ncr_53c400a_ports;
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magic = ncr_53c400a_magic;
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break;
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case BOARD_HP_C2502:
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flags = FLAG_NO_DMA_FIXUP;
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ports = ncr_53c400a_ports;
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magic = hp_c2502_magic;
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break;
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case BOARD_DTC3181E:
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flags = FLAG_NO_DMA_FIXUP;
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ports = dtc_3181e_ports;
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magic = ncr_53c400a_magic;
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break;
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}
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#ifndef SCSI_G_NCR5380_MEM
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if (ports && magic) {
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/* wakeup sequence for the NCR53C400A and DTC3181E */
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/* Disable the adapter and look for a free io port */
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magic_configure(-1, 0, magic);
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if (overrides[current_override].NCR5380_map_name != PORT_AUTO)
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for (i = 0; ports[i]; i++) {
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if (!request_region(ports[i], 16, "ncr53c80"))
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continue;
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if (overrides[current_override].NCR5380_map_name == ports[i])
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break;
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release_region(ports[i], 16);
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} else
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for (i = 0; ports[i]; i++) {
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if (!request_region(ports[i], 16, "ncr53c80"))
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continue;
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if (inb(ports[i]) == 0xff)
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break;
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release_region(ports[i], 16);
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}
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if (ports[i]) {
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/* At this point we have our region reserved */
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magic_configure(i, 0, magic); /* no IRQ yet */
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outb(0xc0, ports[i] + 9);
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if (inb(ports[i] + 9) != 0x80)
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continue;
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overrides[current_override].NCR5380_map_name = ports[i];
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port_idx = i;
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} else
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continue;
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}
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else
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{
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/* Not a 53C400A style setup - just grab */
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if(!(request_region(overrides[current_override].NCR5380_map_name, NCR5380_region_size, "ncr5380")))
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continue;
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region_size = NCR5380_region_size;
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}
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#else
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base = overrides[current_override].NCR5380_map_name;
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if (!request_mem_region(base, NCR5380_region_size, "ncr5380"))
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continue;
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iomem = ioremap(base, NCR5380_region_size);
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if (!iomem) {
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release_mem_region(base, NCR5380_region_size);
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continue;
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}
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#endif
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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_release;
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hostdata = shost_priv(instance);
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#ifndef SCSI_G_NCR5380_MEM
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instance->io_port = overrides[current_override].NCR5380_map_name;
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instance->n_io_port = region_size;
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hostdata->io_width = 1; /* 8-bit PDMA by default */
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/*
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* On NCR53C400 boards, NCR5380 registers are mapped 8 past
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* the base address.
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*/
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switch (overrides[current_override].board) {
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case BOARD_NCR53C400:
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instance->io_port += 8;
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hostdata->c400_ctl_status = 0;
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hostdata->c400_blk_cnt = 1;
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hostdata->c400_host_buf = 4;
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break;
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case BOARD_DTC3181E:
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hostdata->io_width = 2; /* 16-bit PDMA */
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/* fall through */
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case BOARD_NCR53C400A:
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case BOARD_HP_C2502:
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hostdata->c400_ctl_status = 9;
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hostdata->c400_blk_cnt = 10;
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hostdata->c400_host_buf = 8;
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break;
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}
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#else
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instance->base = overrides[current_override].NCR5380_map_name;
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hostdata->iomem = iomem;
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switch (overrides[current_override].board) {
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case BOARD_NCR53C400:
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hostdata->c400_ctl_status = 0x100;
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hostdata->c400_blk_cnt = 0x101;
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hostdata->c400_host_buf = 0x104;
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break;
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case BOARD_DTC3181E:
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case BOARD_NCR53C400A:
|
|
case BOARD_HP_C2502:
|
|
pr_err(DRV_MODULE_NAME ": unknown register offsets\n");
|
|
goto out_unregister;
|
|
}
|
|
#endif
|
|
|
|
if (NCR5380_init(instance, flags))
|
|
goto out_unregister;
|
|
|
|
switch (overrides[current_override].board) {
|
|
case BOARD_NCR53C400:
|
|
case BOARD_DTC3181E:
|
|
case BOARD_NCR53C400A:
|
|
case BOARD_HP_C2502:
|
|
NCR5380_write(hostdata->c400_ctl_status, 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) {
|
|
#ifndef SCSI_G_NCR5380_MEM
|
|
/* set IRQ for HP C2502 */
|
|
if (overrides[current_override].board == BOARD_HP_C2502)
|
|
magic_configure(port_idx, instance->irq, magic);
|
|
#endif
|
|
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)
|
|
{
|
|
struct NCR5380_hostdata *hostdata = shost_priv(instance);
|
|
int blocks = len / 128;
|
|
int start = 0;
|
|
|
|
NCR5380_write(hostdata->c400_ctl_status, CSR_BASE | CSR_TRANS_DIR);
|
|
NCR5380_write(hostdata->c400_blk_cnt, blocks);
|
|
while (1) {
|
|
if (NCR5380_read(hostdata->c400_blk_cnt) == 0)
|
|
break;
|
|
if (NCR5380_read(hostdata->c400_ctl_status) & CSR_GATED_53C80_IRQ) {
|
|
printk(KERN_ERR "53C400r: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks);
|
|
return -1;
|
|
}
|
|
while (NCR5380_read(hostdata->c400_ctl_status) & CSR_HOST_BUF_NOT_RDY)
|
|
; /* FIXME - no timeout */
|
|
|
|
#ifndef SCSI_G_NCR5380_MEM
|
|
if (hostdata->io_width == 2)
|
|
insw(instance->io_port + hostdata->c400_host_buf,
|
|
dst + start, 64);
|
|
else
|
|
insb(instance->io_port + hostdata->c400_host_buf,
|
|
dst + start, 128);
|
|
#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(hostdata->c400_ctl_status) & CSR_HOST_BUF_NOT_RDY)
|
|
; /* FIXME - no timeout */
|
|
|
|
#ifndef SCSI_G_NCR5380_MEM
|
|
if (hostdata->io_width == 2)
|
|
insw(instance->io_port + hostdata->c400_host_buf,
|
|
dst + start, 64);
|
|
else
|
|
insb(instance->io_port + hostdata->c400_host_buf,
|
|
dst + start, 128);
|
|
#else
|
|
/* implies SCSI_G_NCR5380_MEM */
|
|
memcpy_fromio(dst + start,
|
|
hostdata->iomem + NCR53C400_host_buffer, 128);
|
|
#endif
|
|
start += 128;
|
|
blocks--;
|
|
}
|
|
|
|
if (!(NCR5380_read(hostdata->c400_ctl_status) & CSR_GATED_53C80_IRQ))
|
|
printk("53C400r: no 53C80 gated irq after transfer");
|
|
|
|
/* wait for 53C80 registers to be available */
|
|
while (!(NCR5380_read(hostdata->c400_ctl_status) & CSR_53C80_REG))
|
|
;
|
|
|
|
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)
|
|
{
|
|
struct NCR5380_hostdata *hostdata = shost_priv(instance);
|
|
int blocks = len / 128;
|
|
int start = 0;
|
|
|
|
NCR5380_write(hostdata->c400_ctl_status, CSR_BASE);
|
|
NCR5380_write(hostdata->c400_blk_cnt, blocks);
|
|
while (1) {
|
|
if (NCR5380_read(hostdata->c400_ctl_status) & CSR_GATED_53C80_IRQ) {
|
|
printk(KERN_ERR "53C400w: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks);
|
|
return -1;
|
|
}
|
|
|
|
if (NCR5380_read(hostdata->c400_blk_cnt) == 0)
|
|
break;
|
|
while (NCR5380_read(hostdata->c400_ctl_status) & CSR_HOST_BUF_NOT_RDY)
|
|
; // FIXME - timeout
|
|
#ifndef SCSI_G_NCR5380_MEM
|
|
if (hostdata->io_width == 2)
|
|
outsw(instance->io_port + hostdata->c400_host_buf,
|
|
src + start, 64);
|
|
else
|
|
outsb(instance->io_port + hostdata->c400_host_buf,
|
|
src + start, 128);
|
|
#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(hostdata->c400_ctl_status) & CSR_HOST_BUF_NOT_RDY)
|
|
; // FIXME - no timeout
|
|
|
|
#ifndef SCSI_G_NCR5380_MEM
|
|
if (hostdata->io_width == 2)
|
|
outsw(instance->io_port + hostdata->c400_host_buf,
|
|
src + start, 64);
|
|
else
|
|
outsb(instance->io_port + hostdata->c400_host_buf,
|
|
src + start, 128);
|
|
#else
|
|
/* implies SCSI_G_NCR5380_MEM */
|
|
memcpy_toio(hostdata->iomem + NCR53C400_host_buffer,
|
|
src + start, 128);
|
|
#endif
|
|
start += 128;
|
|
blocks--;
|
|
}
|
|
|
|
/* wait for 53C80 registers to be available */
|
|
while (!(NCR5380_read(hostdata->c400_ctl_status) & CSR_53C80_REG)) {
|
|
udelay(4); /* DTC436 chip hangs without this */
|
|
/* FIXME - no timeout */
|
|
}
|
|
|
|
if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_END_DMA_TRANSFER)) {
|
|
printk(KERN_ERR "53C400w: no end dma signal\n");
|
|
}
|
|
|
|
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;
|
|
|
|
/* 53C400 datasheet: non-modulo-128-byte transfers should use PIO */
|
|
if (transfersize % 128)
|
|
transfersize = 0;
|
|
|
|
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_param(hp_c2502, 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);
|