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Diffstat (limited to 'drivers/scsi/imm.h')
| -rw-r--r-- | drivers/scsi/imm.h | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/drivers/scsi/imm.h b/drivers/scsi/imm.h new file mode 100644 index 000000000..7f2bb35b1 --- /dev/null +++ b/drivers/scsi/imm.h @@ -0,0 +1,144 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +/* Driver for the Iomega MatchMaker parallel port SCSI HBA embedded in + * the Iomega ZIP Plus drive + * + * (c) 1998 David Campbell + * + * Please note that I live in Perth, Western Australia. GMT+0800 + */ + +#ifndef _IMM_H +#define _IMM_H + +#define IMM_VERSION "2.05 (for Linux 2.4.0)" + +/* + * 10 Apr 1998 (Good Friday) - Received EN144302 by email from Iomega. + * Scarry thing is the level of support from one of their managers. + * The onus is now on us (the developers) to shut up and start coding. + * 11Apr98 [ 0.10 ] + * + * --- SNIP --- + * + * It manages to find the drive which is a good start. Writing data during + * data phase is known to be broken (due to requirements of two byte writes). + * Removing "Phase" debug messages. + * + * PS: Took four hours of coding after I bought a drive. + * ANZAC Day (Aus "War Veterans Holiday") 25Apr98 [ 0.14 ] + * + * Ten minutes later after a few fixes.... (LITERALLY!!!) + * Have mounted disk, copied file, dismounted disk, remount disk, diff file + * ----- It actually works!!! ----- + * 25Apr98 [ 0.15 ] + * + * Twenty minutes of mucking around, rearanged the IEEE negotiate mechanism. + * Now have byte mode working (only EPP and ECP to go now... :=) + * 26Apr98 [ 0.16 ] + * + * Thirty minutes of further coding results in EPP working on my machine. + * 27Apr98 [ 0.17 ] + * + * Due to work commitments and inability to get a "true" ECP mode functioning + * I have decided to code the parport support into imm. + * 09Jun98 [ 0.18 ] + * + * Driver is now out of beta testing. + * Support for parport has been added. + * Now distributed with the ppa driver. + * 12Jun98 [ 2.00 ] + * + * Err.. It appears that imm-2.00 was broken.... + * 18Jun98 [ 2.01 ] + * + * Patch applied to sync this against the Linux 2.1.x kernel code + * Included qboot_zip.sh + * 21Jun98 [ 2.02 ] + * + * Other clean ups include the follow changes: + * CONFIG_SCSI_PPA_HAVE_PEDANTIC => CONFIG_SCSI_IZIP_EPP16 + * added CONFIG_SCSI_IZIP_SLOW_CTR option + * [2.03] + * Fix kernel panic on scsi timeout. 20Aug00 [2.04] + * + * Avoid io_request_lock problems. + * John Cavan <johncavan@home.com> 16Nov00 [2.05] + */ +/* ------ END OF USER CONFIGURABLE PARAMETERS ----- */ + +#include <linux/stddef.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/ioport.h> +#include <linux/delay.h> +#include <linux/proc_fs.h> +#include <linux/stat.h> +#include <linux/blkdev.h> +#include <linux/sched.h> +#include <linux/interrupt.h> + +#include <asm/io.h> +#include <scsi/scsi_host.h> +/* batteries not included :-) */ + +/* + * modes in which the driver can operate + */ +#define IMM_AUTODETECT 0 /* Autodetect mode */ +#define IMM_NIBBLE 1 /* work in standard 4 bit mode */ +#define IMM_PS2 2 /* PS/2 byte mode */ +#define IMM_EPP_8 3 /* EPP mode, 8 bit */ +#define IMM_EPP_16 4 /* EPP mode, 16 bit */ +#define IMM_EPP_32 5 /* EPP mode, 32 bit */ +#define IMM_UNKNOWN 6 /* Just in case... */ + +static char *IMM_MODE_STRING[] = +{ + [IMM_AUTODETECT] = "Autodetect", + [IMM_NIBBLE] = "SPP", + [IMM_PS2] = "PS/2", + [IMM_EPP_8] = "EPP 8 bit", + [IMM_EPP_16] = "EPP 16 bit", +#ifdef CONFIG_SCSI_IZIP_EPP16 + [IMM_EPP_32] = "EPP 16 bit", +#else + [IMM_EPP_32] = "EPP 32 bit", +#endif + [IMM_UNKNOWN] = "Unknown", +}; + +/* other options */ +#define IMM_BURST_SIZE 512 /* data burst size */ +#define IMM_SELECT_TMO 500 /* 500 how long to wait for target ? */ +#define IMM_SPIN_TMO 5000 /* 50000 imm_wait loop limiter */ +#define IMM_DEBUG 0 /* debugging option */ +#define IN_EPP_MODE(x) (x == IMM_EPP_8 || x == IMM_EPP_16 || x == IMM_EPP_32) + +/* args to imm_connect */ +#define CONNECT_EPP_MAYBE 1 +#define CONNECT_NORMAL 0 + +#define r_dtr(x) (unsigned char)inb((x)) +#define r_str(x) (unsigned char)inb((x)+1) +#define r_ctr(x) (unsigned char)inb((x)+2) +#define r_epp(x) (unsigned char)inb((x)+4) +#define r_fifo(x) (unsigned char)inb((x)) /* x must be base_hi */ + /* On PCI is: base+0x400 != base_hi */ +#define r_ecr(x) (unsigned char)inb((x)+2) /* x must be base_hi */ + +#define w_dtr(x,y) outb(y, (x)) +#define w_str(x,y) outb(y, (x)+1) +#define w_epp(x,y) outb(y, (x)+4) +#define w_fifo(x,y) outb(y, (x)) /* x must be base_hi */ +#define w_ecr(x,y) outb(y, (x)+0x2) /* x must be base_hi */ + +#ifdef CONFIG_SCSI_IZIP_SLOW_CTR +#define w_ctr(x,y) outb_p(y, (x)+2) +#else +#define w_ctr(x,y) outb(y, (x)+2) +#endif + +static int imm_engine(imm_struct *, struct scsi_cmnd *); + +#endif /* _IMM_H */ |