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Commit | Line | Data |
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a16efc1c KJ |
1 | /* |
2 | * Detection routine for the NCR53c710 based Amiga SCSI Controllers for Linux. | |
3 | * Amiga Technologies A4000T SCSI controller. | |
4 | * | |
5 | * Written 1997 by Alan Hourihane <alanh@fairlite.demon.co.uk> | |
6 | * plus modifications of the 53c7xx.c driver to support the Amiga. | |
7 | * | |
8 | * Rewritten to use 53c700.c by Kars de Jong <jongk@linux-m68k.org> | |
9 | */ | |
10 | ||
11 | #include <linux/module.h> | |
12 | #include <linux/platform_device.h> | |
13 | #include <linux/init.h> | |
14 | #include <linux/interrupt.h> | |
96249cf9 | 15 | #include <asm/amigahw.h> |
a16efc1c KJ |
16 | #include <asm/amigaints.h> |
17 | #include <scsi/scsi_host.h> | |
18 | #include <scsi/scsi_transport_spi.h> | |
19 | ||
20 | #include "53c700.h" | |
21 | ||
22 | MODULE_AUTHOR("Alan Hourihane <alanh@fairlite.demon.co.uk> / Kars de Jong <jongk@linux-m68k.org>"); | |
23 | MODULE_DESCRIPTION("Amiga A4000T NCR53C710 driver"); | |
24 | MODULE_LICENSE("GPL"); | |
25 | ||
26 | ||
27 | static struct scsi_host_template a4000t_scsi_driver_template = { | |
28 | .name = "A4000T builtin SCSI", | |
29 | .proc_name = "A4000t", | |
30 | .this_id = 7, | |
31 | .module = THIS_MODULE, | |
32 | }; | |
33 | ||
34 | static struct platform_device *a4000t_scsi_device; | |
35 | ||
36 | #define A4000T_SCSI_ADDR 0xdd0040 | |
37 | ||
38 | static int __devinit a4000t_probe(struct device *dev) | |
39 | { | |
bbfbbbc1 | 40 | struct Scsi_Host *host; |
a16efc1c KJ |
41 | struct NCR_700_Host_Parameters *hostdata; |
42 | ||
43 | if (!(MACH_IS_AMIGA && AMIGAHW_PRESENT(A4000_SCSI))) | |
44 | goto out; | |
45 | ||
46 | if (!request_mem_region(A4000T_SCSI_ADDR, 0x1000, | |
47 | "A4000T builtin SCSI")) | |
48 | goto out; | |
49 | ||
bbfbbbc1 MK |
50 | hostdata = kzalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL); |
51 | if (!hostdata) { | |
a16efc1c KJ |
52 | printk(KERN_ERR "a4000t-scsi: Failed to allocate host data\n"); |
53 | goto out_release; | |
54 | } | |
a16efc1c KJ |
55 | |
56 | /* Fill in the required pieces of hostdata */ | |
57 | hostdata->base = (void __iomem *)ZTWO_VADDR(A4000T_SCSI_ADDR); | |
58 | hostdata->clock = 50; | |
59 | hostdata->chip710 = 1; | |
60 | hostdata->dmode_extra = DMODE_FC2; | |
61 | hostdata->dcntl_extra = EA_710; | |
62 | ||
63 | /* and register the chip */ | |
64 | host = NCR_700_detect(&a4000t_scsi_driver_template, hostdata, dev); | |
65 | if (!host) { | |
66 | printk(KERN_ERR "a4000t-scsi: No host detected; " | |
67 | "board configuration problem?\n"); | |
68 | goto out_free; | |
69 | } | |
70 | ||
71 | host->this_id = 7; | |
72 | host->base = A4000T_SCSI_ADDR; | |
73 | host->irq = IRQ_AMIGA_PORTS; | |
74 | ||
75 | if (request_irq(host->irq, NCR_700_intr, IRQF_SHARED, "a4000t-scsi", | |
76 | host)) { | |
77 | printk(KERN_ERR "a4000t-scsi: request_irq failed\n"); | |
78 | goto out_put_host; | |
79 | } | |
80 | ||
3ac709c1 | 81 | dev_set_drvdata(dev, host); |
a16efc1c KJ |
82 | scsi_scan_host(host); |
83 | ||
84 | return 0; | |
85 | ||
86 | out_put_host: | |
87 | scsi_host_put(host); | |
88 | out_free: | |
89 | kfree(hostdata); | |
90 | out_release: | |
91 | release_mem_region(A4000T_SCSI_ADDR, 0x1000); | |
92 | out: | |
93 | return -ENODEV; | |
94 | } | |
95 | ||
96 | static __devexit int a4000t_device_remove(struct device *dev) | |
97 | { | |
3ac709c1 | 98 | struct Scsi_Host *host = dev_get_drvdata(dev); |
a16efc1c KJ |
99 | struct NCR_700_Host_Parameters *hostdata = shost_priv(host); |
100 | ||
101 | scsi_remove_host(host); | |
102 | ||
103 | NCR_700_release(host); | |
104 | kfree(hostdata); | |
105 | free_irq(host->irq, host); | |
106 | release_mem_region(A4000T_SCSI_ADDR, 0x1000); | |
107 | ||
108 | return 0; | |
109 | } | |
110 | ||
111 | static struct device_driver a4000t_scsi_driver = { | |
112 | .name = "a4000t-scsi", | |
113 | .bus = &platform_bus_type, | |
114 | .probe = a4000t_probe, | |
115 | .remove = __devexit_p(a4000t_device_remove), | |
116 | }; | |
117 | ||
118 | static int __init a4000t_scsi_init(void) | |
119 | { | |
120 | int err; | |
121 | ||
122 | err = driver_register(&a4000t_scsi_driver); | |
123 | if (err) | |
124 | return err; | |
125 | ||
126 | a4000t_scsi_device = platform_device_register_simple("a4000t-scsi", | |
127 | -1, NULL, 0); | |
128 | if (IS_ERR(a4000t_scsi_device)) { | |
129 | driver_unregister(&a4000t_scsi_driver); | |
130 | return PTR_ERR(a4000t_scsi_device); | |
131 | } | |
132 | ||
133 | return err; | |
134 | } | |
135 | ||
136 | static void __exit a4000t_scsi_exit(void) | |
137 | { | |
138 | platform_device_unregister(a4000t_scsi_device); | |
139 | driver_unregister(&a4000t_scsi_driver); | |
140 | } | |
141 | ||
142 | module_init(a4000t_scsi_init); | |
143 | module_exit(a4000t_scsi_exit); |