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192.168.1.100 / T800 / 19f421ece02e978f016bb6ceca25d3d8846eeace / . / src / kernel / linux / v4.19 / drivers / scsi / bvme6000_scsi.c
blob: 0f846ae2f918e2d82df422a2074972d6fe247f6d [file] [log] [blame]
xjb04a4022021-11-25 15:01:52 +0800[diff] [blame]1/*
2 * Detection routine for the NCR53c710 based BVME6000 SCSI Controllers for Linux.
3 *
4 * Based on work by Alan Hourihane and Kars de Jong
5 *
6 * Rewritten to use 53c700.c by Richard Hirst <richard@sleepie.demon.co.uk>
7 */
8
9#include <linux/module.h>
10#include <linux/blkdev.h>
11#include <linux/device.h>
12#include <linux/platform_device.h>
13#include <linux/init.h>
14#include <linux/interrupt.h>
15#include <linux/slab.h>
16#include <asm/bvme6000hw.h>
17#include <scsi/scsi_host.h>
18#include <scsi/scsi_device.h>
19#include <scsi/scsi_transport.h>
20#include <scsi/scsi_transport_spi.h>
21
22#include "53c700.h"
23
24MODULE_AUTHOR("Richard Hirst <richard@sleepie.demon.co.uk>");
25MODULE_DESCRIPTION("BVME6000 NCR53C710 driver");
26MODULE_LICENSE("GPL");
27
28static struct scsi_host_template bvme6000_scsi_driver_template = {
29 .name = "BVME6000 NCR53c710 SCSI",
30 .proc_name = "BVME6000",
31 .this_id = 7,
32 .module = THIS_MODULE,
33};
34
35static struct platform_device *bvme6000_scsi_device;
36
37static int
38bvme6000_probe(struct platform_device *dev)
39{
40 struct Scsi_Host *host;
41 struct NCR_700_Host_Parameters *hostdata;
42
43 if (!MACH_IS_BVME6000)
44 goto out;
45
46 hostdata = kzalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL);
47 if (!hostdata) {
48 printk(KERN_ERR "bvme6000-scsi: "
49 "Failed to allocate host data\n");
50 goto out;
51 }
52
53 /* Fill in the required pieces of hostdata */
54 hostdata->base = (void __iomem *)BVME_NCR53C710_BASE;
55 hostdata->clock = 40; /* XXX - depends on the CPU clock! */
56 hostdata->chip710 = 1;
57 hostdata->dmode_extra = DMODE_FC2;
58 hostdata->dcntl_extra = EA_710;
59 hostdata->ctest7_extra = CTEST7_TT1;
60
61 /* and register the chip */
62 host = NCR_700_detect(&bvme6000_scsi_driver_template, hostdata,
63 &dev->dev);
64 if (!host) {
65 printk(KERN_ERR "bvme6000-scsi: No host detected; "
66 "board configuration problem?\n");
67 goto out_free;
68 }
69 host->base = BVME_NCR53C710_BASE;
70 host->this_id = 7;
71 host->irq = BVME_IRQ_SCSI;
72 if (request_irq(BVME_IRQ_SCSI, NCR_700_intr, 0, "bvme6000-scsi",
73 host)) {
74 printk(KERN_ERR "bvme6000-scsi: request_irq failed\n");
75 goto out_put_host;
76 }
77
78 platform_set_drvdata(dev, host);
79 scsi_scan_host(host);
80
81 return 0;
82
83 out_put_host:
84 scsi_host_put(host);
85 out_free:
86 kfree(hostdata);
87 out:
88 return -ENODEV;
89}
90
91static int
92bvme6000_device_remove(struct platform_device *dev)
93{
94 struct Scsi_Host *host = platform_get_drvdata(dev);
95 struct NCR_700_Host_Parameters *hostdata = shost_priv(host);
96
97 scsi_remove_host(host);
98 NCR_700_release(host);
99 kfree(hostdata);
100 free_irq(host->irq, host);
101
102 return 0;
103}
104
105static struct platform_driver bvme6000_scsi_driver = {
106 .driver = {
107 .name = "bvme6000-scsi",
108 },
109 .probe = bvme6000_probe,
110 .remove = bvme6000_device_remove,
111};
112
113static int __init bvme6000_scsi_init(void)
114{
115 int err;
116
117 err = platform_driver_register(&bvme6000_scsi_driver);
118 if (err)
119 return err;
120
121 bvme6000_scsi_device = platform_device_register_simple("bvme6000-scsi",
122 -1, NULL, 0);
123 if (IS_ERR(bvme6000_scsi_device)) {
124 platform_driver_unregister(&bvme6000_scsi_driver);
125 return PTR_ERR(bvme6000_scsi_device);
126 }
127
128 return 0;
129}
130
131static void __exit bvme6000_scsi_exit(void)
132{
133 platform_device_unregister(bvme6000_scsi_device);
134 platform_driver_unregister(&bvme6000_scsi_driver);
135}
136
137module_init(bvme6000_scsi_init);
138module_exit(bvme6000_scsi_exit);