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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 | |
24 | MODULE_AUTHOR("Richard Hirst <richard@sleepie.demon.co.uk>"); |
25 | MODULE_DESCRIPTION("BVME6000 NCR53C710 driver"); |
26 | MODULE_LICENSE("GPL"); |
27 | |
28 | static 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 | |
35 | static struct platform_device *bvme6000_scsi_device; |
36 | |
37 | static int |
38 | bvme6000_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 | |
91 | static int |
92 | bvme6000_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 | |
105 | static struct platform_driver bvme6000_scsi_driver = { |
106 | .driver = { |
107 | .name = "bvme6000-scsi", |
108 | .owner = THIS_MODULE, |
109 | }, |
110 | .probe = bvme6000_probe, |
111 | .remove = bvme6000_device_remove, |
112 | }; |
113 | |
114 | static int __init bvme6000_scsi_init(void) |
115 | { |
116 | int err; |
117 | |
118 | err = platform_driver_register(&bvme6000_scsi_driver); |
119 | if (err) |
120 | return err; |
121 | |
122 | bvme6000_scsi_device = platform_device_register_simple("bvme6000-scsi", |
123 | -1, NULL, 0); |
124 | if (IS_ERR(bvme6000_scsi_device)) { |
125 | platform_driver_unregister(&bvme6000_scsi_driver); |
126 | return PTR_ERR(bvme6000_scsi_device); |
127 | } |
128 | |
129 | return 0; |
130 | } |
131 | |
132 | static void __exit bvme6000_scsi_exit(void) |
133 | { |
134 | platform_device_unregister(bvme6000_scsi_device); |
135 | platform_driver_unregister(&bvme6000_scsi_driver); |
136 | } |
137 | |
138 | module_init(bvme6000_scsi_init); |
139 | module_exit(bvme6000_scsi_exit); |
140 |
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