drivers/scsi/imm.h

Source file repositories/reference/linux-study-clean/drivers/scsi/imm.h

File Facts

System
Linux kernel
Corpus path
drivers/scsi/imm.h
Extension
.h
Size
5133 bytes
Lines
146
Domain
Driver Families
Bucket
drivers/scsi
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

#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",

Annotation

Implementation Notes