1/*
2    dmx3191d.c - driver for the Domex DMX3191D SCSI card.
3    Copyright (C) 2000 by Massimo Piccioni <dafastidio@libero.it>
4    Portions Copyright (C) 2004 by Christoph Hellwig <hch@lst.de>
5
6    Based on the generic NCR5380 driver by Drew Eckhardt et al.
7
8    This program is free software; you can redistribute it and/or modify
9    it under the terms of the GNU General Public License as published by
10    the Free Software Foundation; either version 2 of the License, or
11    (at your option) any later version.
12
13    This program is distributed in the hope that it will be useful,
14    but WITHOUT ANY WARRANTY; without even the implied warranty of
15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16    GNU General Public License for more details.
17
18    You should have received a copy of the GNU General Public License
19    along with this program; if not, write to the Free Software
20    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21*/
22
23#include <linux/init.h>
24#include <linux/ioport.h>
25#include <linux/kernel.h>
26#include <linux/module.h>
27#include <linux/pci.h>
28#include <linux/interrupt.h>
29#include <asm/io.h>
30
31#include <scsi/scsi_host.h>
32
33/*
34 * Definitions for the generic 5380 driver.
35 */
36
37#define DONT_USE_INTR
38
39#define NCR5380_read(reg)		inb(port + reg)
40#define NCR5380_write(reg, value)	outb(value, port + reg)
41
42#define NCR5380_implementation_fields	/* none */
43#define NCR5380_local_declare()		unsigned int port
44#define NCR5380_setup(instance)		port = instance->io_port
45
46/*
47 * Includes needed for NCR5380.[ch] (XXX: Move them to NCR5380.h)
48 */
49#include <linux/delay.h>
50
51#include "NCR5380.h"
52#include "NCR5380.c"
53
54#define DMX3191D_DRIVER_NAME	"dmx3191d"
55#define DMX3191D_REGION_LEN	8
56
57
58static struct scsi_host_template dmx3191d_driver_template = {
59	.proc_name		= DMX3191D_DRIVER_NAME,
60	.name			= "Domex DMX3191D",
61	.info			= NCR5380_info,
62	.queuecommand		= NCR5380_queue_command,
63	.eh_abort_handler	= NCR5380_abort,
64	.eh_bus_reset_handler	= NCR5380_bus_reset,
65	.can_queue		= 32,
66	.this_id		= 7,
67	.sg_tablesize		= SG_ALL,
68	.cmd_per_lun		= 2,
69	.use_clustering		= DISABLE_CLUSTERING,
70};
71
72static int dmx3191d_probe_one(struct pci_dev *pdev,
73			      const struct pci_device_id *id)
74{
75	struct Scsi_Host *shost;
76	unsigned long io;
77	int error = -ENODEV;
78
79	if (pci_enable_device(pdev))
80		goto out;
81
82	io = pci_resource_start(pdev, 0);
83	if (!request_region(io, DMX3191D_REGION_LEN, DMX3191D_DRIVER_NAME)) {
84		printk(KERN_ERR "dmx3191: region 0x%lx-0x%lx already reserved\n",
85				io, io + DMX3191D_REGION_LEN);
86		goto out_disable_device;
87	}
88
89	shost = scsi_host_alloc(&dmx3191d_driver_template,
90			sizeof(struct NCR5380_hostdata));
91	if (!shost)
92		goto out_release_region;
93	shost->io_port = io;
94
95	/* This card does not seem to raise an interrupt on pdev->irq.
96	 * Steam-powered SCSI controllers run without an IRQ anyway.
97	 */
98	shost->irq = NO_IRQ;
99
100	NCR5380_init(shost, FLAG_NO_PSEUDO_DMA | FLAG_DTC3181E);
101
102	pci_set_drvdata(pdev, shost);
103
104	error = scsi_add_host(shost, &pdev->dev);
105	if (error)
106		goto out_release_region;
107
108	scsi_scan_host(shost);
109	return 0;
110
111 out_release_region:
112	release_region(io, DMX3191D_REGION_LEN);
113 out_disable_device:
114	pci_disable_device(pdev);
115 out:
116	return error;
117}
118
119static void dmx3191d_remove_one(struct pci_dev *pdev)
120{
121	struct Scsi_Host *shost = pci_get_drvdata(pdev);
122
123	scsi_remove_host(shost);
124
125	NCR5380_exit(shost);
126
127	release_region(shost->io_port, DMX3191D_REGION_LEN);
128	pci_disable_device(pdev);
129
130	scsi_host_put(shost);
131}
132
133static struct pci_device_id dmx3191d_pci_tbl[] = {
134	{PCI_VENDOR_ID_DOMEX, PCI_DEVICE_ID_DOMEX_DMX3191D,
135		PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4},
136	{ }
137};
138MODULE_DEVICE_TABLE(pci, dmx3191d_pci_tbl);
139
140static struct pci_driver dmx3191d_pci_driver = {
141	.name		= DMX3191D_DRIVER_NAME,
142	.id_table	= dmx3191d_pci_tbl,
143	.probe		= dmx3191d_probe_one,
144	.remove		= dmx3191d_remove_one,
145};
146
147static int __init dmx3191d_init(void)
148{
149	return pci_register_driver(&dmx3191d_pci_driver);
150}
151
152static void __exit dmx3191d_exit(void)
153{
154	pci_unregister_driver(&dmx3191d_pci_driver);
155}
156
157module_init(dmx3191d_init);
158module_exit(dmx3191d_exit);
159
160MODULE_AUTHOR("Massimo Piccioni <dafastidio@libero.it>");
161MODULE_DESCRIPTION("Domex DMX3191D SCSI driver");
162MODULE_LICENSE("GPL");
163