1 /*
2  * Detection routine for the NCR53c710 based Amiga SCSI Controllers for Linux.
3  *		Amiga MacroSystemUS WarpEngine SCSI controller.
4  *		Amiga Technologies/DKB A4091 SCSI controller.
5  *
6  * Written 1997 by Alan Hourihane <alanh@fairlite.demon.co.uk>
7  * plus modifications of the 53c7xx.c driver to support the Amiga.
8  *
9  * Rewritten to use 53c700.c by Kars de Jong <jongk@linux-m68k.org>
10  */
11 
12 #include <linux/module.h>
13 #include <linux/init.h>
14 #include <linux/interrupt.h>
15 #include <linux/zorro.h>
16 #include <linux/slab.h>
17 
18 #include <asm/amigahw.h>
19 #include <asm/amigaints.h>
20 
21 #include <scsi/scsi_host.h>
22 #include <scsi/scsi_transport_spi.h>
23 
24 #include "53c700.h"
25 
26 MODULE_AUTHOR("Alan Hourihane <alanh@fairlite.demon.co.uk> / Kars de Jong <jongk@linux-m68k.org>");
27 MODULE_DESCRIPTION("Amiga Zorro NCR53C710 driver");
28 MODULE_LICENSE("GPL");
29 
30 
31 static struct scsi_host_template zorro7xx_scsi_driver_template = {
32 	.proc_name	= "zorro7xx",
33 	.this_id	= 7,
34 	.module		= THIS_MODULE,
35 };
36 
37 static struct zorro_driver_data {
38 	const char *name;
39 	unsigned long offset;
40 	int absolute;	/* offset is absolute address */
41 } zorro7xx_driver_data[] __devinitdata = {
42 	{ .name = "PowerUP 603e+", .offset = 0xf40000, .absolute = 1 },
43 	{ .name = "WarpEngine 40xx", .offset = 0x40000 },
44 	{ .name = "A4091", .offset = 0x800000 },
45 	{ .name = "GForce 040/060", .offset = 0x40000 },
46 	{ 0 }
47 };
48 
49 static struct zorro_device_id zorro7xx_zorro_tbl[] __devinitdata = {
50 	{
51 		.id = ZORRO_PROD_PHASE5_BLIZZARD_603E_PLUS,
52 		.driver_data = (unsigned long)&zorro7xx_driver_data[0],
53 	},
54 	{
55 		.id = ZORRO_PROD_MACROSYSTEMS_WARP_ENGINE_40xx,
56 		.driver_data = (unsigned long)&zorro7xx_driver_data[1],
57 	},
58 	{
59 		.id = ZORRO_PROD_CBM_A4091_1,
60 		.driver_data = (unsigned long)&zorro7xx_driver_data[2],
61 	},
62 	{
63 		.id = ZORRO_PROD_CBM_A4091_2,
64 		.driver_data = (unsigned long)&zorro7xx_driver_data[2],
65 	},
66 	{
67 		.id = ZORRO_PROD_GVP_GFORCE_040_060,
68 		.driver_data = (unsigned long)&zorro7xx_driver_data[3],
69 	},
70 	{ 0 }
71 };
72 MODULE_DEVICE_TABLE(zorro, zorro7xx_zorro_tbl);
73 
zorro7xx_init_one(struct zorro_dev * z,const struct zorro_device_id * ent)74 static int __devinit zorro7xx_init_one(struct zorro_dev *z,
75 				       const struct zorro_device_id *ent)
76 {
77 	struct Scsi_Host *host;
78 	struct NCR_700_Host_Parameters *hostdata;
79 	struct zorro_driver_data *zdd;
80 	unsigned long board, ioaddr;
81 
82 	board = zorro_resource_start(z);
83 	zdd = (struct zorro_driver_data *)ent->driver_data;
84 
85 	if (zdd->absolute) {
86 		ioaddr = zdd->offset;
87 	} else {
88 		ioaddr = board + zdd->offset;
89 	}
90 
91 	if (!zorro_request_device(z, zdd->name)) {
92 		printk(KERN_ERR "zorro7xx: cannot reserve region 0x%lx, abort\n",
93 		       board);
94 		return -EBUSY;
95 	}
96 
97 	hostdata = kzalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL);
98 	if (!hostdata) {
99 		printk(KERN_ERR "zorro7xx: Failed to allocate host data\n");
100 		goto out_release;
101 	}
102 
103 	/* Fill in the required pieces of hostdata */
104 	if (ioaddr > 0x01000000)
105 		hostdata->base = ioremap(ioaddr, zorro_resource_len(z));
106 	else
107 		hostdata->base = (void __iomem *)ZTWO_VADDR(ioaddr);
108 
109 	hostdata->clock = 50;
110 	hostdata->chip710 = 1;
111 
112 	/* Settings for at least WarpEngine 40xx */
113 	hostdata->ctest7_extra = CTEST7_TT1;
114 
115 	zorro7xx_scsi_driver_template.name = zdd->name;
116 
117 	/* and register the chip */
118 	host = NCR_700_detect(&zorro7xx_scsi_driver_template, hostdata,
119 			      &z->dev);
120 	if (!host) {
121 		printk(KERN_ERR "zorro7xx: No host detected; "
122 				"board configuration problem?\n");
123 		goto out_free;
124 	}
125 
126 	host->this_id = 7;
127 	host->base = ioaddr;
128 	host->irq = IRQ_AMIGA_PORTS;
129 
130 	if (request_irq(host->irq, NCR_700_intr, IRQF_SHARED, "zorro7xx-scsi",
131 			host)) {
132 		printk(KERN_ERR "zorro7xx: request_irq failed\n");
133 		goto out_put_host;
134 	}
135 
136 	zorro_set_drvdata(z, host);
137 	scsi_scan_host(host);
138 
139 	return 0;
140 
141  out_put_host:
142 	scsi_host_put(host);
143  out_free:
144 	if (ioaddr > 0x01000000)
145 		iounmap(hostdata->base);
146 	kfree(hostdata);
147  out_release:
148 	zorro_release_device(z);
149 
150 	return -ENODEV;
151 }
152 
zorro7xx_remove_one(struct zorro_dev * z)153 static __devexit void zorro7xx_remove_one(struct zorro_dev *z)
154 {
155 	struct Scsi_Host *host = zorro_get_drvdata(z);
156 	struct NCR_700_Host_Parameters *hostdata = shost_priv(host);
157 
158 	scsi_remove_host(host);
159 
160 	NCR_700_release(host);
161 	kfree(hostdata);
162 	free_irq(host->irq, host);
163 	zorro_release_device(z);
164 }
165 
166 static struct zorro_driver zorro7xx_driver = {
167 	.name	  = "zorro7xx-scsi",
168 	.id_table = zorro7xx_zorro_tbl,
169 	.probe	  = zorro7xx_init_one,
170 	.remove	  = __devexit_p(zorro7xx_remove_one),
171 };
172 
zorro7xx_scsi_init(void)173 static int __init zorro7xx_scsi_init(void)
174 {
175 	return zorro_register_driver(&zorro7xx_driver);
176 }
177 
zorro7xx_scsi_exit(void)178 static void __exit zorro7xx_scsi_exit(void)
179 {
180 	zorro_unregister_driver(&zorro7xx_driver);
181 }
182 
183 module_init(zorro7xx_scsi_init);
184 module_exit(zorro7xx_scsi_exit);
185