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1/* SPDX-License-Identifier: GPL-2.0 */2 3/* Driver for the Iomega MatchMaker parallel port SCSI HBA embedded in 4 * the Iomega ZIP Plus drive5 * 6 * (c) 1998 David Campbell7 *8 * Please note that I live in Perth, Western Australia. GMT+08009 */10 11#ifndef _IMM_H12#define _IMM_H13 14#define IMM_VERSION "2.05 (for Linux 2.4.0)"15 16/* 17 * 10 Apr 1998 (Good Friday) - Received EN144302 by email from Iomega.18 * Scarry thing is the level of support from one of their managers.19 * The onus is now on us (the developers) to shut up and start coding.20 * 11Apr98 [ 0.10 ]21 *22 * --- SNIP ---23 *24 * It manages to find the drive which is a good start. Writing data during25 * data phase is known to be broken (due to requirements of two byte writes).26 * Removing "Phase" debug messages.27 *28 * PS: Took four hours of coding after I bought a drive.29 * ANZAC Day (Aus "War Veterans Holiday") 25Apr98 [ 0.14 ]30 *31 * Ten minutes later after a few fixes.... (LITERALLY!!!)32 * Have mounted disk, copied file, dismounted disk, remount disk, diff file33 * ----- It actually works!!! -----34 * 25Apr98 [ 0.15 ]35 *36 * Twenty minutes of mucking around, rearanged the IEEE negotiate mechanism.37 * Now have byte mode working (only EPP and ECP to go now... :=)38 * 26Apr98 [ 0.16 ]39 *40 * Thirty minutes of further coding results in EPP working on my machine.41 * 27Apr98 [ 0.17 ]42 *43 * Due to work commitments and inability to get a "true" ECP mode functioning44 * I have decided to code the parport support into imm.45 * 09Jun98 [ 0.18 ]46 *47 * Driver is now out of beta testing.48 * Support for parport has been added.49 * Now distributed with the ppa driver.50 * 12Jun98 [ 2.00 ]51 *52 * Err.. It appears that imm-2.00 was broken....53 * 18Jun98 [ 2.01 ]54 *55 * Patch applied to sync this against the Linux 2.1.x kernel code56 * Included qboot_zip.sh57 * 21Jun98 [ 2.02 ]58 *59 * Other clean ups include the follow changes:60 * CONFIG_SCSI_PPA_HAVE_PEDANTIC => CONFIG_SCSI_IZIP_EPP1661 * added CONFIG_SCSI_IZIP_SLOW_CTR option62 * [2.03]63 * Fix kernel panic on scsi timeout. 20Aug00 [2.04]64 *65 * Avoid io_request_lock problems.66 * John Cavan <johncavan@home.com> 16Nov00 [2.05]67 */68/* ------ END OF USER CONFIGURABLE PARAMETERS ----- */69 70#include <linux/stddef.h>71#include <linux/module.h>72#include <linux/kernel.h>73#include <linux/ioport.h>74#include <linux/delay.h>75#include <linux/proc_fs.h>76#include <linux/stat.h>77#include <linux/blkdev.h>78#include <linux/sched.h>79#include <linux/interrupt.h>80 81#include <asm/io.h>82#include <scsi/scsi_host.h>83/* batteries not included :-) */84 85/*86 * modes in which the driver can operate 87 */88#define IMM_AUTODETECT 0 /* Autodetect mode */89#define IMM_NIBBLE 1 /* work in standard 4 bit mode */90#define IMM_PS2 2 /* PS/2 byte mode */91#define IMM_EPP_8 3 /* EPP mode, 8 bit */92#define IMM_EPP_16 4 /* EPP mode, 16 bit */93#define IMM_EPP_32 5 /* EPP mode, 32 bit */94#define IMM_UNKNOWN 6 /* Just in case... */95 96static char *IMM_MODE_STRING[] =97{98 [IMM_AUTODETECT] = "Autodetect",99 [IMM_NIBBLE] = "SPP",100 [IMM_PS2] = "PS/2",101 [IMM_EPP_8] = "EPP 8 bit",102 [IMM_EPP_16] = "EPP 16 bit",103 [IMM_EPP_32] = "EPP 32 bit",104 [IMM_UNKNOWN] = "Unknown",105};106 107/* other options */108#define IMM_BURST_SIZE 512 /* data burst size */109#define IMM_SELECT_TMO 500 /* 500 how long to wait for target ? */110#define IMM_SPIN_TMO 5000 /* 50000 imm_wait loop limiter */111#define IMM_DEBUG 0 /* debugging option */112#define IN_EPP_MODE(x) (x == IMM_EPP_8 || x == IMM_EPP_16 || x == IMM_EPP_32)113 114/* args to imm_connect */115#define CONNECT_EPP_MAYBE 1116#define CONNECT_NORMAL 0117 118#define r_dtr(x) (unsigned char)inb((x))119#define r_str(x) (unsigned char)inb((x)+1)120#define r_ctr(x) (unsigned char)inb((x)+2)121#define r_epp(x) (unsigned char)inb((x)+4)122#define r_fifo(x) (unsigned char)inb((x)) /* x must be base_hi */123 /* On PCI is: base+0x400 != base_hi */124#define r_ecr(x) (unsigned char)inb((x)+2) /* x must be base_hi */125 126#define w_dtr(x,y) outb(y, (x))127#define w_str(x,y) outb(y, (x)+1)128#define w_epp(x,y) outb(y, (x)+4)129#define w_fifo(x,y) outb(y, (x)) /* x must be base_hi */130#define w_ecr(x,y) outb(y, (x)+0x2) /* x must be base_hi */131 132#ifdef CONFIG_SCSI_IZIP_SLOW_CTR133#define w_ctr(x,y) outb_p(y, (x)+2)134#else135#define w_ctr(x,y) outb(y, (x)+2)136#endif137 138static inline struct scsi_pointer *imm_scsi_pointer(struct scsi_cmnd *cmd)139{140 return scsi_cmd_priv(cmd);141}142 143static int imm_engine(imm_struct *, struct scsi_cmnd *);144 145#endif /* _IMM_H */146