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
40MODULE_AUTHOR("Thomas Bogend��rfer");
41MODULE_DESCRIPTION("SNI RM 53c710 SCSI Driver");
42MODULE_LICENSE("GPL");
43MODULE_ALIAS("platform:snirm_53c710");
44
45#define SNIRM710_CLOCK	32
46
47static 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
54static 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
107static 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
120static struct platform_driver snirm710_driver = {
121	.probe	= snirm710_probe,
122	.remove_new = snirm710_driver_remove,
123	.driver	= {
124		.name	= "snirm_53c710",
125	},
126};
127module_platform_driver(snirm710_driver);
128