1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Detection routine for the NCR53c710 based Amiga SCSI Controllers for Linux.
4 *		Amiga MacroSystemUS WarpEngine SCSI controller.
5 *		Amiga Technologies/DKB A4091 SCSI controller.
6 *
7 * Written 1997 by Alan Hourihane <alanh@fairlite.demon.co.uk>
8 * plus modifications of the 53c7xx.c driver to support the Amiga.
9 *
10 * Rewritten to use 53c700.c by Kars de Jong <jongk@linux-m68k.org>
11 */
12
13#include <linux/module.h>
14#include <linux/init.h>
15#include <linux/interrupt.h>
16#include <linux/zorro.h>
17#include <linux/slab.h>
18
19#include <asm/amigahw.h>
20#include <asm/amigaints.h>
21
22#include <scsi/scsi_host.h>
23#include <scsi/scsi_transport_spi.h>
24
25#include "53c700.h"
26
27MODULE_AUTHOR("Alan Hourihane <alanh@fairlite.demon.co.uk> / Kars de Jong <jongk@linux-m68k.org>");
28MODULE_DESCRIPTION("Amiga Zorro NCR53C710 driver");
29MODULE_LICENSE("GPL");
30
31
32static struct scsi_host_template zorro7xx_scsi_driver_template = {
33	.proc_name	= "zorro7xx",
34	.this_id	= 7,
35	.module		= THIS_MODULE,
36};
37
38static struct zorro_driver_data {
39	const char *name;
40	unsigned long offset;
41	int absolute;	/* offset is absolute address */
42} zorro7xx_driver_data[] = {
43	{ .name = "PowerUP 603e+", .offset = 0xf40000, .absolute = 1 },
44	{ .name = "WarpEngine 40xx", .offset = 0x40000 },
45	{ .name = "A4091", .offset = 0x800000 },
46	{ .name = "GForce 040/060", .offset = 0x40000 },
47	{ 0 }
48};
49
50static struct zorro_device_id zorro7xx_zorro_tbl[] = {
51	{
52		.id = ZORRO_PROD_PHASE5_BLIZZARD_603E_PLUS,
53		.driver_data = (unsigned long)&zorro7xx_driver_data[0],
54	},
55	{
56		.id = ZORRO_PROD_MACROSYSTEMS_WARP_ENGINE_40xx,
57		.driver_data = (unsigned long)&zorro7xx_driver_data[1],
58	},
59	{
60		.id = ZORRO_PROD_CBM_A4091_1,
61		.driver_data = (unsigned long)&zorro7xx_driver_data[2],
62	},
63	{
64		.id = ZORRO_PROD_CBM_A4091_2,
65		.driver_data = (unsigned long)&zorro7xx_driver_data[2],
66	},
67	{
68		.id = ZORRO_PROD_GVP_GFORCE_040_060,
69		.driver_data = (unsigned long)&zorro7xx_driver_data[3],
70	},
71	{ 0 }
72};
73MODULE_DEVICE_TABLE(zorro, zorro7xx_zorro_tbl);
74
75static int zorro7xx_init_one(struct zorro_dev *z,
76			     const struct zorro_device_id *ent)
77{
78	struct Scsi_Host *host;
79	struct NCR_700_Host_Parameters *hostdata;
80	struct zorro_driver_data *zdd;
81	unsigned long board, ioaddr;
82
83	board = zorro_resource_start(z);
84	zdd = (struct zorro_driver_data *)ent->driver_data;
85
86	if (zdd->absolute) {
87		ioaddr = zdd->offset;
88	} else {
89		ioaddr = board + zdd->offset;
90	}
91
92	if (!zorro_request_device(z, zdd->name)) {
93		printk(KERN_ERR "zorro7xx: cannot reserve region 0x%lx, abort\n",
94		       board);
95		return -EBUSY;
96	}
97
98	hostdata = kzalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL);
99	if (!hostdata) {
100		printk(KERN_ERR "zorro7xx: Failed to allocate host data\n");
101		goto out_release;
102	}
103
104	/* Fill in the required pieces of hostdata */
105	if (ioaddr > 0x01000000)
106		hostdata->base = ioremap(ioaddr, zorro_resource_len(z));
107	else
108		hostdata->base = ZTWO_VADDR(ioaddr);
109
110	hostdata->clock = 50;
111	hostdata->chip710 = 1;
112
113	/* Settings for at least WarpEngine 40xx */
114	hostdata->ctest7_extra = CTEST7_TT1;
115
116	zorro7xx_scsi_driver_template.name = zdd->name;
117
118	/* and register the chip */
119	host = NCR_700_detect(&zorro7xx_scsi_driver_template, hostdata,
120			      &z->dev);
121	if (!host) {
122		printk(KERN_ERR "zorro7xx: No host detected; "
123				"board configuration problem?\n");
124		goto out_free;
125	}
126
127	host->this_id = 7;
128	host->base = ioaddr;
129	host->irq = IRQ_AMIGA_PORTS;
130
131	if (request_irq(host->irq, NCR_700_intr, IRQF_SHARED, "zorro7xx-scsi",
132			host)) {
133		printk(KERN_ERR "zorro7xx: request_irq failed\n");
134		goto out_put_host;
135	}
136
137	zorro_set_drvdata(z, host);
138	scsi_scan_host(host);
139
140	return 0;
141
142 out_put_host:
143	scsi_host_put(host);
144 out_free:
145	if (ioaddr > 0x01000000)
146		iounmap(hostdata->base);
147	kfree(hostdata);
148 out_release:
149	zorro_release_device(z);
150
151	return -ENODEV;
152}
153
154static void zorro7xx_remove_one(struct zorro_dev *z)
155{
156	struct Scsi_Host *host = zorro_get_drvdata(z);
157	struct NCR_700_Host_Parameters *hostdata = shost_priv(host);
158
159	scsi_remove_host(host);
160
161	NCR_700_release(host);
162	if (host->base > 0x01000000)
163		iounmap(hostdata->base);
164	kfree(hostdata);
165	free_irq(host->irq, host);
166	zorro_release_device(z);
167}
168
169static struct zorro_driver zorro7xx_driver = {
170	.name	  = "zorro7xx-scsi",
171	.id_table = zorro7xx_zorro_tbl,
172	.probe	  = zorro7xx_init_one,
173	.remove	  = zorro7xx_remove_one,
174};
175
176static int __init zorro7xx_scsi_init(void)
177{
178	return zorro_register_driver(&zorro7xx_driver);
179}
180
181static void __exit zorro7xx_scsi_exit(void)
182{
183	zorro_unregister_driver(&zorro7xx_driver);
184}
185
186module_init(zorro7xx_scsi_init);
187module_exit(zorro7xx_scsi_exit);
188