GNU Linux-libre 5.10.219-gnu1
[releases.git] / drivers / scsi / dmx3191d.c
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
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
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");