1 2/* Driver for the Iomega MatchMaker parallel port SCSI HBA embedded in 3 * the Iomega ZIP Plus drive 4 * 5 * (c) 1998 David Campbell campbell@torque.net 6 * 7 * Please note that I live in Perth, Western Australia. GMT+0800 8 */ 9 10#ifndef _IMM_H 11#define _IMM_H 12 13#define IMM_VERSION "2.05 (for Linux 2.4.0)" 14 15/* 16 * 10 Apr 1998 (Good Friday) - Received EN144302 by email from Iomega. 17 * Scarry thing is the level of support from one of their managers. 18 * The onus is now on us (the developers) to shut up and start coding. 19 * 11Apr98 [ 0.10 ] 20 * 21 * --- SNIP --- 22 * 23 * It manages to find the drive which is a good start. Writing data during 24 * data phase is known to be broken (due to requirements of two byte writes). 25 * Removing "Phase" debug messages. 26 * 27 * PS: Took four hours of coding after I bought a drive. 28 * ANZAC Day (Aus "War Veterans Holiday") 25Apr98 [ 0.14 ] 29 * 30 * Ten minutes later after a few fixes.... (LITERALLY!!!) 31 * Have mounted disk, copied file, dismounted disk, remount disk, diff file 32 * ----- It actually works!!! ----- 33 * 25Apr98 [ 0.15 ] 34 * 35 * Twenty minutes of mucking around, rearanged the IEEE negotiate mechanism. 36 * Now have byte mode working (only EPP and ECP to go now... :=) 37 * 26Apr98 [ 0.16 ] 38 * 39 * Thirty minutes of further coding results in EPP working on my machine. 40 * 27Apr98 [ 0.17 ] 41 * 42 * Due to work commitments and inability to get a "true" ECP mode functioning 43 * I have decided to code the parport support into imm. 44 * 09Jun98 [ 0.18 ] 45 * 46 * Driver is now out of beta testing. 47 * Support for parport has been added. 48 * Now distributed with the ppa driver. 49 * 12Jun98 [ 2.00 ] 50 * 51 * Err.. It appears that imm-2.00 was broken.... 52 * 18Jun98 [ 2.01 ] 53 * 54 * Patch applied to sync this against the Linux 2.1.x kernel code 55 * Included qboot_zip.sh 56 * 21Jun98 [ 2.02 ] 57 * 58 * Other clean ups include the follow changes: 59 * CONFIG_SCSI_PPA_HAVE_PEDANTIC => CONFIG_SCSI_IZIP_EPP16 60 * added CONFIG_SCSI_IZIP_SLOW_CTR option 61 * [2.03] 62 * Fix kernel panic on scsi timeout. 20Aug00 [2.04] 63 * 64 * Avoid io_request_lock problems. 65 * John Cavan <johncavan@home.com> 16Nov00 [2.05] 66 */ 67/* ------ END OF USER CONFIGURABLE PARAMETERS ----- */ 68 69#ifdef IMM_CODE 70#include <linux/config.h> 71#include <linux/stddef.h> 72#include <linux/module.h> 73#include <linux/kernel.h> 74#include <linux/tqueue.h> 75#include <linux/ioport.h> 76#include <linux/delay.h> 77#include <linux/proc_fs.h> 78#include <linux/stat.h> 79#include <linux/blk.h> 80#include <linux/sched.h> 81#include <linux/interrupt.h> 82 83#include <asm/io.h> 84#include "sd.h" 85#include "hosts.h" 86/* batteries not included :-) */ 87 88/* 89 * modes in which the driver can operate 90 */ 91#define IMM_AUTODETECT 0 /* Autodetect mode */ 92#define IMM_NIBBLE 1 /* work in standard 4 bit mode */ 93#define IMM_PS2 2 /* PS/2 byte mode */ 94#define IMM_EPP_8 3 /* EPP mode, 8 bit */ 95#define IMM_EPP_16 4 /* EPP mode, 16 bit */ 96#define IMM_EPP_32 5 /* EPP mode, 32 bit */ 97#define IMM_UNKNOWN 6 /* Just in case... */ 98 99static char *IMM_MODE_STRING[] = 100{ 101 "Autodetect", 102 "SPP", 103 "PS/2", 104 "EPP 8 bit", 105 "EPP 16 bit", 106#ifdef CONFIG_SCSI_IZIP_EPP16 107 "EPP 16 bit", 108#else 109 "EPP 32 bit", 110#endif 111 "Unknown"}; 112 113/* This is a global option */ 114int imm_sg = SG_ALL; /* enable/disable scatter-gather. */ 115 116/* other options */ 117#define IMM_CAN_QUEUE 1 /* use "queueing" interface */ 118#define IMM_BURST_SIZE 512 /* data burst size */ 119#define IMM_SELECT_TMO 500 /* 500 how long to wait for target ? */ 120#define IMM_SPIN_TMO 5000 /* 50000 imm_wait loop limiter */ 121#define IMM_DEBUG 0 /* debugging option */ 122#define IN_EPP_MODE(x) (x == IMM_EPP_8 || x == IMM_EPP_16 || x == IMM_EPP_32) 123 124/* args to imm_connect */ 125#define CONNECT_EPP_MAYBE 1 126#define CONNECT_NORMAL 0 127 128#define r_dtr(x) (unsigned char)inb((x)) 129#define r_str(x) (unsigned char)inb((x)+1) 130#define r_ctr(x) (unsigned char)inb((x)+2) 131#define r_epp(x) (unsigned char)inb((x)+4) 132#define r_fifo(x) (unsigned char)inb((x)) /* x must be base_hi */ 133 /* On PCI is: base+0x400 != base_hi */ 134#define r_ecr(x) (unsigned char)inb((x)+2) /* x must be base_hi */ 135 136#define w_dtr(x,y) outb(y, (x)) 137#define w_str(x,y) outb(y, (x)+1) 138#define w_epp(x,y) outb(y, (x)+4) 139#define w_fifo(x,y) outb(y, (x)) /* x must be base_hi */ 140#define w_ecr(x,y) outb(y, (x)+0x2) /* x must be base_hi */ 141 142#ifdef CONFIG_SCSI_IZIP_SLOW_CTR 143#define w_ctr(x,y) outb_p(y, (x)+2) 144#else 145#define w_ctr(x,y) outb(y, (x)+2) 146#endif 147 148static int imm_engine(imm_struct *, Scsi_Cmnd *); 149static int imm_in(int, char *, int); 150static int imm_init(int); 151static void imm_interrupt(void *); 152static int imm_out(int, char *, int); 153 154#else 155#define imm_release 0 156#endif 157 158int imm_detect(Scsi_Host_Template *); 159const char *imm_info(struct Scsi_Host *); 160int imm_command(Scsi_Cmnd *); 161int imm_queuecommand(Scsi_Cmnd *, void (*done) (Scsi_Cmnd *)); 162int imm_abort(Scsi_Cmnd *); 163int imm_reset(Scsi_Cmnd *); 164int imm_proc_info(char *, char **, off_t, int, int, int); 165int imm_biosparam(Disk *, kdev_t, int *); 166 167#define IMM { proc_name: "imm", \ 168 proc_info: imm_proc_info, \ 169 name: "Iomega VPI2 (imm) interface",\ 170 detect: imm_detect, \ 171 release: imm_release, \ 172 command: imm_command, \ 173 queuecommand: imm_queuecommand, \ 174 eh_abort_handler: imm_abort, \ 175 eh_device_reset_handler: NULL, \ 176 eh_bus_reset_handler: imm_reset, \ 177 eh_host_reset_handler: imm_reset, \ 178 use_new_eh_code: 1, \ 179 bios_param: imm_biosparam, \ 180 this_id: 7, \ 181 sg_tablesize: SG_ALL, \ 182 cmd_per_lun: 1, \ 183 use_clustering: ENABLE_CLUSTERING \ 184} 185#endif /* _IMM_H */ 186