1 /* -*- mode: c; c-basic-offset: 8 -*- */
2
3 /* SNI RM driver
4 *
5 * Copyright (C) 2001 by James.Bottomley@HansenPartnership.com
6 **-----------------------------------------------------------------------------
7 **
8 ** This program is free software; you can redistribute it and/or modify
9 ** it under the terms of the GNU General Public License as published by
10 ** the Free Software Foundation; either version 2 of the License, or
11 ** (at your option) any later version.
12 **
13 ** This program is distributed in the hope that it will be useful,
14 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
15 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 ** GNU General Public License for more details.
17 **
18 ** You should have received a copy of the GNU General Public License
19 ** along with this program; if not, write to the Free Software
20 ** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 **
22 **-----------------------------------------------------------------------------
23 */
24
25 /*
26 * Based on lasi700.c
27 */
28
29 #include <linux/kernel.h>
30 #include <linux/module.h>
31 #include <linux/init.h>
32 #include <linux/types.h>
33 #include <linux/slab.h>
34 #include <linux/stat.h>
35 #include <linux/mm.h>
36 #include <linux/blkdev.h>
37 #include <linux/sched.h>
38 #include <linux/ioport.h>
39 #include <linux/dma-mapping.h>
40 #include <linux/platform_device.h>
41
42 #include <asm/page.h>
43 #include <asm/pgtable.h>
44 #include <asm/irq.h>
45 #include <asm/delay.h>
46
47 #include <scsi/scsi_host.h>
48 #include <scsi/scsi_device.h>
49 #include <scsi/scsi_transport.h>
50 #include <scsi/scsi_transport_spi.h>
51
52 #include "53c700.h"
53
54 MODULE_AUTHOR("Thomas Bogendörfer");
55 MODULE_DESCRIPTION("SNI RM 53c710 SCSI Driver");
56 MODULE_LICENSE("GPL");
57 MODULE_ALIAS("platform:snirm_53c710");
58
59 #define SNIRM710_CLOCK 32
60
61 static struct scsi_host_template snirm710_template = {
62 .name = "SNI RM SCSI 53c710",
63 .proc_name = "snirm_53c710",
64 .this_id = 7,
65 .module = THIS_MODULE,
66 };
67
snirm710_probe(struct platform_device * dev)68 static int snirm710_probe(struct platform_device *dev)
69 {
70 unsigned long base;
71 struct NCR_700_Host_Parameters *hostdata;
72 struct Scsi_Host *host;
73 struct resource *res;
74 int rc;
75
76 res = platform_get_resource(dev, IORESOURCE_MEM, 0);
77 if (!res)
78 return -ENODEV;
79
80 base = res->start;
81 hostdata = kzalloc(sizeof(*hostdata), GFP_KERNEL);
82 if (!hostdata)
83 return -ENOMEM;
84
85 hostdata->dev = &dev->dev;
86 dma_set_mask(&dev->dev, DMA_BIT_MASK(32));
87 hostdata->base = ioremap_nocache(base, 0x100);
88 hostdata->differential = 0;
89
90 hostdata->clock = SNIRM710_CLOCK;
91 hostdata->force_le_on_be = 1;
92 hostdata->chip710 = 1;
93 hostdata->burst_length = 4;
94
95 host = NCR_700_detect(&snirm710_template, hostdata, &dev->dev);
96 if (!host)
97 goto out_kfree;
98 host->this_id = 7;
99 host->base = base;
100 host->irq = rc = platform_get_irq(dev, 0);
101 if (rc < 0)
102 goto out_put_host;
103 if(request_irq(host->irq, NCR_700_intr, IRQF_SHARED, "snirm710", host)) {
104 printk(KERN_ERR "snirm710: request_irq failed!\n");
105 goto out_put_host;
106 }
107
108 dev_set_drvdata(&dev->dev, host);
109 scsi_scan_host(host);
110
111 return 0;
112
113 out_put_host:
114 scsi_host_put(host);
115 out_kfree:
116 iounmap(hostdata->base);
117 kfree(hostdata);
118 return -ENODEV;
119 }
120
snirm710_driver_remove(struct platform_device * dev)121 static int __exit snirm710_driver_remove(struct platform_device *dev)
122 {
123 struct Scsi_Host *host = dev_get_drvdata(&dev->dev);
124 struct NCR_700_Host_Parameters *hostdata =
125 (struct NCR_700_Host_Parameters *)host->hostdata[0];
126
127 scsi_remove_host(host);
128 NCR_700_release(host);
129 free_irq(host->irq, host);
130 iounmap(hostdata->base);
131 kfree(hostdata);
132
133 return 0;
134 }
135
136 static struct platform_driver snirm710_driver = {
137 .probe = snirm710_probe,
138 .remove = snirm710_driver_remove,
139 .driver = {
140 .name = "snirm_53c710",
141 },
142 };
143
snirm710_init(void)144 static int __init snirm710_init(void)
145 {
146 return platform_driver_register(&snirm710_driver);
147 }
148
snirm710_exit(void)149 static void __exit snirm710_exit(void)
150 {
151 platform_driver_unregister(&snirm710_driver);
152 }
153
154 module_init(snirm710_init);
155 module_exit(snirm710_exit);
156