1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /* -*- mode: c; c-basic-offset: 8 -*- */
3
4 /* SNI RM driver
5 *
6 * Copyright (C) 2001 by James.Bottomley@HansenPartnership.com
7 **-----------------------------------------------------------------------------
8 **
9 **
10 **-----------------------------------------------------------------------------
11 */
12
13 /*
14 * Based on lasi700.c
15 */
16
17 #include <linux/kernel.h>
18 #include <linux/module.h>
19 #include <linux/init.h>
20 #include <linux/types.h>
21 #include <linux/slab.h>
22 #include <linux/stat.h>
23 #include <linux/mm.h>
24 #include <linux/blkdev.h>
25 #include <linux/sched.h>
26 #include <linux/ioport.h>
27 #include <linux/dma-mapping.h>
28 #include <linux/platform_device.h>
29
30 #include <asm/page.h>
31 #include <asm/irq.h>
32 #include <asm/delay.h>
33
34 #include <scsi/scsi_host.h>
35 #include <scsi/scsi_device.h>
36 #include <scsi/scsi_transport.h>
37 #include <scsi/scsi_transport_spi.h>
38
39 #include "53c700.h"
40
41 MODULE_AUTHOR("Thomas Bogendörfer");
42 MODULE_DESCRIPTION("SNI RM 53c710 SCSI Driver");
43 MODULE_LICENSE("GPL");
44 MODULE_ALIAS("platform:snirm_53c710");
45
46 #define SNIRM710_CLOCK 32
47
48 static struct scsi_host_template snirm710_template = {
49 .name = "SNI RM SCSI 53c710",
50 .proc_name = "snirm_53c710",
51 .this_id = 7,
52 .module = THIS_MODULE,
53 };
54
snirm710_probe(struct platform_device * dev)55 static int snirm710_probe(struct platform_device *dev)
56 {
57 unsigned long base;
58 struct NCR_700_Host_Parameters *hostdata;
59 struct Scsi_Host *host;
60 struct resource *res;
61
62 res = platform_get_resource(dev, IORESOURCE_MEM, 0);
63 if (!res)
64 return -ENODEV;
65
66 base = res->start;
67 hostdata = kzalloc(sizeof(*hostdata), GFP_KERNEL);
68 if (!hostdata)
69 return -ENOMEM;
70
71 hostdata->dev = &dev->dev;
72 dma_set_mask(&dev->dev, DMA_BIT_MASK(32));
73 hostdata->base = ioremap(base, 0x100);
74 hostdata->differential = 0;
75
76 hostdata->clock = SNIRM710_CLOCK;
77 hostdata->force_le_on_be = 1;
78 hostdata->chip710 = 1;
79 hostdata->burst_length = 4;
80
81 host = NCR_700_detect(&snirm710_template, hostdata, &dev->dev);
82 if (!host)
83 goto out_kfree;
84 host->this_id = 7;
85 host->base = base;
86 host->irq = platform_get_irq(dev, 0);
87 if(request_irq(host->irq, NCR_700_intr, IRQF_SHARED, "snirm710", host)) {
88 printk(KERN_ERR "snirm710: request_irq failed!\n");
89 goto out_put_host;
90 }
91
92 dev_set_drvdata(&dev->dev, host);
93 scsi_scan_host(host);
94
95 return 0;
96
97 out_put_host:
98 scsi_host_put(host);
99 out_kfree:
100 iounmap(hostdata->base);
101 kfree(hostdata);
102 return -ENODEV;
103 }
104
snirm710_driver_remove(struct platform_device * dev)105 static int snirm710_driver_remove(struct platform_device *dev)
106 {
107 struct Scsi_Host *host = dev_get_drvdata(&dev->dev);
108 struct NCR_700_Host_Parameters *hostdata =
109 (struct NCR_700_Host_Parameters *)host->hostdata[0];
110
111 scsi_remove_host(host);
112 NCR_700_release(host);
113 free_irq(host->irq, host);
114 iounmap(hostdata->base);
115 kfree(hostdata);
116
117 return 0;
118 }
119
120 static struct platform_driver snirm710_driver = {
121 .probe = snirm710_probe,
122 .remove = snirm710_driver_remove,
123 .driver = {
124 .name = "snirm_53c710",
125 },
126 };
127 module_platform_driver(snirm710_driver);
128
