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
42 static 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 = NCR5380_CMD_SIZE,
56 };
57
dmx3191d_probe_one(struct pci_dev * pdev,const struct pci_device_id * id)58 static 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
104 out_exit:
105 NCR5380_exit(shost);
106 out_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
dmx3191d_remove_one(struct pci_dev * pdev)116 static 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
130 static 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 };
135 MODULE_DEVICE_TABLE(pci, dmx3191d_pci_tbl);
136
137 static 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
144 module_pci_driver(dmx3191d_pci_driver);
145
146 MODULE_AUTHOR("Massimo Piccioni <dafastidio@libero.it>");
147 MODULE_DESCRIPTION("Domex DMX3191D SCSI driver");
148 MODULE_LICENSE("GPL");
149