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Commit | Line | Data |
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506c7bbc KJ |
1 | /* |
2 | * Detection routine for the NCR53c710 based MVME16x SCSI Controllers for Linux. | |
3 | * | |
4 | * Based on work by Alan Hourihane | |
5 | * | |
6 | * Rewritten to use 53c700.c by Kars de Jong <jongk@linux-m68k.org> | |
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 <asm/mvme16xhw.h> | |
16 | #include <scsi/scsi_host.h> | |
17 | #include <scsi/scsi_device.h> | |
18 | #include <scsi/scsi_transport.h> | |
19 | #include <scsi/scsi_transport_spi.h> | |
20 | ||
21 | #include "53c700.h" | |
22 | ||
23 | MODULE_AUTHOR("Kars de Jong <jongk@linux-m68k.org>"); | |
24 | MODULE_DESCRIPTION("MVME16x NCR53C710 driver"); | |
25 | MODULE_LICENSE("GPL"); | |
26 | ||
27 | static struct scsi_host_template mvme16x_scsi_driver_template = { | |
28 | .name = "MVME16x NCR53c710 SCSI", | |
29 | .proc_name = "MVME16x", | |
30 | .this_id = 7, | |
31 | .module = THIS_MODULE, | |
32 | }; | |
33 | ||
34 | static struct platform_device *mvme16x_scsi_device; | |
35 | ||
36 | static __devinit int | |
37 | mvme16x_probe(struct device *dev) | |
38 | { | |
39 | struct Scsi_Host * host = NULL; | |
40 | struct NCR_700_Host_Parameters *hostdata; | |
41 | ||
42 | if (!MACH_IS_MVME16x) | |
43 | goto out; | |
44 | ||
45 | if (mvme16x_config & MVME16x_CONFIG_NO_SCSICHIP) { | |
46 | printk(KERN_INFO "mvme16x-scsi: detection disabled, " | |
47 | "SCSI chip not present\n"); | |
48 | goto out; | |
49 | } | |
50 | ||
bbfbbbc1 | 51 | hostdata = kzalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL); |
506c7bbc KJ |
52 | if (hostdata == NULL) { |
53 | printk(KERN_ERR "mvme16x-scsi: " | |
54 | "Failed to allocate host data\n"); | |
55 | goto out; | |
56 | } | |
506c7bbc KJ |
57 | |
58 | /* Fill in the required pieces of hostdata */ | |
59 | hostdata->base = (void __iomem *)0xfff47000UL; | |
60 | hostdata->clock = 50; /* XXX - depends on the CPU clock! */ | |
61 | hostdata->chip710 = 1; | |
62 | hostdata->dmode_extra = DMODE_FC2; | |
63 | hostdata->dcntl_extra = EA_710; | |
64 | hostdata->ctest7_extra = CTEST7_TT1; | |
65 | ||
66 | /* and register the chip */ | |
67 | host = NCR_700_detect(&mvme16x_scsi_driver_template, hostdata, dev); | |
68 | if (!host) { | |
69 | printk(KERN_ERR "mvme16x-scsi: No host detected; " | |
70 | "board configuration problem?\n"); | |
71 | goto out_free; | |
72 | } | |
73 | host->this_id = 7; | |
74 | host->base = 0xfff47000UL; | |
75 | host->irq = MVME16x_IRQ_SCSI; | |
76 | if (request_irq(host->irq, NCR_700_intr, 0, "mvme16x-scsi", host)) { | |
77 | printk(KERN_ERR "mvme16x-scsi: request_irq failed\n"); | |
78 | goto out_put_host; | |
79 | } | |
80 | ||
81 | /* Enable scsi chip ints */ | |
82 | { | |
83 | volatile unsigned long v; | |
84 | ||
85 | /* Enable scsi interrupts at level 4 in PCCchip2 */ | |
86 | v = in_be32(0xfff4202c); | |
87 | v = (v & ~0xff) | 0x10 | 4; | |
88 | out_be32(0xfff4202c, v); | |
89 | } | |
90 | ||
3ac709c1 | 91 | dev_set_drvdata(dev, host); |
506c7bbc KJ |
92 | scsi_scan_host(host); |
93 | ||
94 | return 0; | |
95 | ||
96 | out_put_host: | |
97 | scsi_host_put(host); | |
98 | out_free: | |
99 | kfree(hostdata); | |
100 | out: | |
101 | return -ENODEV; | |
102 | } | |
103 | ||
104 | static __devexit int | |
105 | mvme16x_device_remove(struct device *dev) | |
106 | { | |
3ac709c1 | 107 | struct Scsi_Host *host = dev_get_drvdata(dev); |
506c7bbc KJ |
108 | struct NCR_700_Host_Parameters *hostdata = shost_priv(host); |
109 | ||
110 | /* Disable scsi chip ints */ | |
111 | { | |
112 | volatile unsigned long v; | |
113 | ||
114 | v = in_be32(0xfff4202c); | |
115 | v &= ~0x10; | |
116 | out_be32(0xfff4202c, v); | |
117 | } | |
118 | scsi_remove_host(host); | |
119 | NCR_700_release(host); | |
120 | kfree(hostdata); | |
121 | free_irq(host->irq, host); | |
122 | ||
123 | return 0; | |
124 | } | |
125 | ||
126 | static struct device_driver mvme16x_scsi_driver = { | |
127 | .name = "mvme16x-scsi", | |
128 | .bus = &platform_bus_type, | |
129 | .probe = mvme16x_probe, | |
130 | .remove = __devexit_p(mvme16x_device_remove), | |
131 | }; | |
132 | ||
133 | static int __init mvme16x_scsi_init(void) | |
134 | { | |
135 | int err; | |
136 | ||
137 | err = driver_register(&mvme16x_scsi_driver); | |
138 | if (err) | |
139 | return err; | |
140 | ||
141 | mvme16x_scsi_device = platform_device_register_simple("mvme16x-scsi", | |
142 | -1, NULL, 0); | |
143 | if (IS_ERR(mvme16x_scsi_device)) { | |
144 | driver_unregister(&mvme16x_scsi_driver); | |
145 | return PTR_ERR(mvme16x_scsi_device); | |
146 | } | |
147 | ||
148 | return 0; | |
149 | } | |
150 | ||
151 | static void __exit mvme16x_scsi_exit(void) | |
152 | { | |
153 | platform_device_unregister(mvme16x_scsi_device); | |
154 | driver_unregister(&mvme16x_scsi_driver); | |
155 | } | |
156 | ||
157 | module_init(mvme16x_scsi_init); | |
158 | module_exit(mvme16x_scsi_exit); |