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 NCR5380_read(reg) inb(hostdata->base + (reg))
38 #define NCR5380_write(reg, value) outb(value, hostdata->base + (reg))
39
40 #define NCR5380_dma_xfer_len NCR5380_dma_xfer_none
41 #define NCR5380_dma_recv_setup NCR5380_dma_setup_none
42 #define NCR5380_dma_send_setup NCR5380_dma_setup_none
43 #define NCR5380_dma_residual NCR5380_dma_residual_none
44
45 #define NCR5380_implementation_fields /* none */
46
47 #include "NCR5380.h"
48 #include "NCR5380.c"
49
50 #define DMX3191D_DRIVER_NAME "dmx3191d"
51 #define DMX3191D_REGION_LEN 8
52
53
54 static struct scsi_host_template dmx3191d_driver_template = {
55 .module = THIS_MODULE,
56 .proc_name = DMX3191D_DRIVER_NAME,
57 .name = "Domex DMX3191D",
58 .info = NCR5380_info,
59 .queuecommand = NCR5380_queue_command,
60 .eh_abort_handler = NCR5380_abort,
61 .eh_host_reset_handler = NCR5380_host_reset,
62 .can_queue = 32,
63 .this_id = 7,
64 .sg_tablesize = SG_ALL,
65 .cmd_per_lun = 2,
66 .use_clustering = DISABLE_CLUSTERING,
67 .cmd_size = NCR5380_CMD_SIZE,
68 };
69
dmx3191d_probe_one(struct pci_dev * pdev,const struct pci_device_id * id)70 static int dmx3191d_probe_one(struct pci_dev *pdev,
71 const struct pci_device_id *id)
72 {
73 struct Scsi_Host *shost;
74 struct NCR5380_hostdata *hostdata;
75 unsigned long io;
76 int error = -ENODEV;
77
78 if (pci_enable_device(pdev))
79 goto out;
80
81 io = pci_resource_start(pdev, 0);
82 if (!request_region(io, DMX3191D_REGION_LEN, DMX3191D_DRIVER_NAME)) {
83 printk(KERN_ERR "dmx3191: region 0x%lx-0x%lx already reserved\n",
84 io, io + DMX3191D_REGION_LEN);
85 goto out_disable_device;
86 }
87
88 shost = scsi_host_alloc(&dmx3191d_driver_template,
89 sizeof(struct NCR5380_hostdata));
90 if (!shost)
91 goto out_release_region;
92
93 hostdata = shost_priv(shost);
94 hostdata->base = io;
95
96 /* This card does not seem to raise an interrupt on pdev->irq.
97 * Steam-powered SCSI controllers run without an IRQ anyway.
98 */
99 shost->irq = NO_IRQ;
100
101 error = NCR5380_init(shost, 0);
102 if (error)
103 goto out_host_put;
104
105 NCR5380_maybe_reset_bus(shost);
106
107 pci_set_drvdata(pdev, shost);
108
109 error = scsi_add_host(shost, &pdev->dev);
110 if (error)
111 goto out_exit;
112
113 scsi_scan_host(shost);
114 return 0;
115
116 out_exit:
117 NCR5380_exit(shost);
118 out_host_put:
119 scsi_host_put(shost);
120 out_release_region:
121 release_region(io, DMX3191D_REGION_LEN);
122 out_disable_device:
123 pci_disable_device(pdev);
124 out:
125 return error;
126 }
127
dmx3191d_remove_one(struct pci_dev * pdev)128 static void dmx3191d_remove_one(struct pci_dev *pdev)
129 {
130 struct Scsi_Host *shost = pci_get_drvdata(pdev);
131 struct NCR5380_hostdata *hostdata = shost_priv(shost);
132 unsigned long io = hostdata->base;
133
134 scsi_remove_host(shost);
135
136 NCR5380_exit(shost);
137 scsi_host_put(shost);
138 release_region(io, DMX3191D_REGION_LEN);
139 pci_disable_device(pdev);
140 }
141
142 static struct pci_device_id dmx3191d_pci_tbl[] = {
143 {PCI_VENDOR_ID_DOMEX, PCI_DEVICE_ID_DOMEX_DMX3191D,
144 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4},
145 { }
146 };
147 MODULE_DEVICE_TABLE(pci, dmx3191d_pci_tbl);
148
149 static struct pci_driver dmx3191d_pci_driver = {
150 .name = DMX3191D_DRIVER_NAME,
151 .id_table = dmx3191d_pci_tbl,
152 .probe = dmx3191d_probe_one,
153 .remove = dmx3191d_remove_one,
154 };
155
156 module_pci_driver(dmx3191d_pci_driver);
157
158 MODULE_AUTHOR("Massimo Piccioni <dafastidio@libero.it>");
159 MODULE_DESCRIPTION("Domex DMX3191D SCSI driver");
160 MODULE_LICENSE("GPL");
161
