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