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/drivers/scsi/zorro7xx.c

https://bitbucket.org/cyanogenmod/android_kernel_asus_tf300t
C | 184 lines | 139 code | 32 blank | 13 comment | 8 complexity | 703a64198e4c6186e218e66cd0a89e56 MD5 | raw file
Possible License(s): LGPL-2.0, AGPL-1.0, GPL-2.0
  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
 26MODULE_AUTHOR("Alan Hourihane <alanh@fairlite.demon.co.uk> / Kars de Jong <jongk@linux-m68k.org>");
 27MODULE_DESCRIPTION("Amiga Zorro NCR53C710 driver");
 28MODULE_LICENSE("GPL");
 29
 30
 31static struct scsi_host_template zorro7xx_scsi_driver_template = {
 32	.proc_name	= "zorro7xx",
 33	.this_id	= 7,
 34	.module		= THIS_MODULE,
 35};
 36
 37static 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
 49static 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};
 72MODULE_DEVICE_TABLE(zorro, zorro7xx_zorro_tbl);
 73
 74static 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
153static __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
166static 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
173static int __init zorro7xx_scsi_init(void)
174{
175	return zorro_register_driver(&zorro7xx_driver);
176}
177
178static void __exit zorro7xx_scsi_exit(void)
179{
180	zorro_unregister_driver(&zorro7xx_driver);
181}
182
183module_init(zorro7xx_scsi_init);
184module_exit(zorro7xx_scsi_exit);