1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3    dmx3191d.c - driver for the Domex DMX3191D SCSI card.
4    Copyright (C) 2000 by Massimo Piccioni <dafastidio@libero.it>
5    Portions Copyright (C) 2004 by Christoph Hellwig <hch@lst.de>
6
7    Based on the generic NCR5380 driver by Drew Eckhardt et al.
8
9*/
10
11#include <linux/init.h>
12#include <linux/ioport.h>
13#include <linux/kernel.h>
14#include <linux/module.h>
15#include <linux/pci.h>
16#include <linux/interrupt.h>
17#include <asm/io.h>
18
19#include <scsi/scsi_host.h>
20
21/*
22 * Definitions for the generic 5380 driver.
23 */
24
25#define NCR5380_read(reg)		inb(hostdata->base + (reg))
26#define NCR5380_write(reg, value)	outb(value, hostdata->base + (reg))
27
28#define NCR5380_dma_xfer_len		NCR5380_dma_xfer_none
29#define NCR5380_dma_recv_setup		NCR5380_dma_setup_none
30#define NCR5380_dma_send_setup		NCR5380_dma_setup_none
31#define NCR5380_dma_residual		NCR5380_dma_residual_none
32
33#define NCR5380_implementation_fields	/* none */
34
35#include "NCR5380.h"
36#include "NCR5380.c"
37
38#define DMX3191D_DRIVER_NAME	"dmx3191d"
39#define DMX3191D_REGION_LEN	8
40
41
42static const struct scsi_host_template dmx3191d_driver_template = {
43	.module			= THIS_MODULE,
44	.proc_name		= DMX3191D_DRIVER_NAME,
45	.name			= "Domex DMX3191D",
46	.info			= NCR5380_info,
47	.queuecommand		= NCR5380_queue_command,
48	.eh_abort_handler	= NCR5380_abort,
49	.eh_host_reset_handler	= NCR5380_host_reset,
50	.can_queue		= 32,
51	.this_id		= 7,
52	.sg_tablesize		= SG_ALL,
53	.cmd_per_lun		= 2,
54	.dma_boundary		= PAGE_SIZE - 1,
55	.cmd_size		= sizeof(struct NCR5380_cmd),
56};
57
58static int dmx3191d_probe_one(struct pci_dev *pdev,
59			      const struct pci_device_id *id)
60{
61	struct Scsi_Host *shost;
62	struct NCR5380_hostdata *hostdata;
63	unsigned long io;
64	int error = -ENODEV;
65
66	if (pci_enable_device(pdev))
67		goto out;
68
69	io = pci_resource_start(pdev, 0);
70	if (!request_region(io, DMX3191D_REGION_LEN, DMX3191D_DRIVER_NAME)) {
71		printk(KERN_ERR "dmx3191: region 0x%lx-0x%lx already reserved\n",
72				io, io + DMX3191D_REGION_LEN);
73		goto out_disable_device;
74	}
75
76	shost = scsi_host_alloc(&dmx3191d_driver_template,
77			sizeof(struct NCR5380_hostdata));
78	if (!shost)
79		goto out_release_region;
80
81	hostdata = shost_priv(shost);
82	hostdata->base = io;
83
84	/* This card does not seem to raise an interrupt on pdev->irq.
85	 * Steam-powered SCSI controllers run without an IRQ anyway.
86	 */
87	shost->irq = NO_IRQ;
88
89	error = NCR5380_init(shost, 0);
90	if (error)
91		goto out_host_put;
92
93	NCR5380_maybe_reset_bus(shost);
94
95	pci_set_drvdata(pdev, shost);
96
97	error = scsi_add_host(shost, &pdev->dev);
98	if (error)
99		goto out_exit;
100
101	scsi_scan_host(shost);
102	return 0;
103
104out_exit:
105	NCR5380_exit(shost);
106out_host_put:
107	scsi_host_put(shost);
108 out_release_region:
109	release_region(io, DMX3191D_REGION_LEN);
110 out_disable_device:
111	pci_disable_device(pdev);
112 out:
113	return error;
114}
115
116static void dmx3191d_remove_one(struct pci_dev *pdev)
117{
118	struct Scsi_Host *shost = pci_get_drvdata(pdev);
119	struct NCR5380_hostdata *hostdata = shost_priv(shost);
120	unsigned long io = hostdata->base;
121
122	scsi_remove_host(shost);
123
124	NCR5380_exit(shost);
125	scsi_host_put(shost);
126	release_region(io, DMX3191D_REGION_LEN);
127	pci_disable_device(pdev);
128}
129
130static struct pci_device_id dmx3191d_pci_tbl[] = {
131	{PCI_VENDOR_ID_DOMEX, PCI_DEVICE_ID_DOMEX_DMX3191D,
132		PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4},
133	{ }
134};
135MODULE_DEVICE_TABLE(pci, dmx3191d_pci_tbl);
136
137static struct pci_driver dmx3191d_pci_driver = {
138	.name		= DMX3191D_DRIVER_NAME,
139	.id_table	= dmx3191d_pci_tbl,
140	.probe		= dmx3191d_probe_one,
141	.remove		= dmx3191d_remove_one,
142};
143
144module_pci_driver(dmx3191d_pci_driver);
145
146MODULE_AUTHOR("Massimo Piccioni <dafastidio@libero.it>");
147MODULE_DESCRIPTION("Domex DMX3191D SCSI driver");
148MODULE_LICENSE("GPL");
149