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
41MODULE_AUTHOR("Thomas Bogendörfer");
42MODULE_DESCRIPTION("SNI RM 53c710 SCSI Driver");
43MODULE_LICENSE("GPL");
44MODULE_ALIAS("platform:snirm_53c710");
45
46#define SNIRM710_CLOCK	32
47
48static 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
55static 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	int rc;
62
63	res = platform_get_resource(dev, IORESOURCE_MEM, 0);
64	if (!res)
65		return -ENODEV;
66
67	base = res->start;
68	hostdata = kzalloc(sizeof(*hostdata), GFP_KERNEL);
69	if (!hostdata)
70		return -ENOMEM;
71
72	hostdata->dev = &dev->dev;
73	dma_set_mask(&dev->dev, DMA_BIT_MASK(32));
74	hostdata->base = ioremap(base, 0x100);
75	hostdata->differential = 0;
76
77	hostdata->clock = SNIRM710_CLOCK;
78	hostdata->force_le_on_be = 1;
79	hostdata->chip710 = 1;
80	hostdata->burst_length = 4;
81
82	host = NCR_700_detect(&snirm710_template, hostdata, &dev->dev);
83	if (!host)
84		goto out_kfree;
85	host->this_id = 7;
86	host->base = base;
87	host->irq = rc = platform_get_irq(dev, 0);
88	if (rc < 0)
89		goto out_put_host;
90	if(request_irq(host->irq, NCR_700_intr, IRQF_SHARED, "snirm710", host)) {
91		printk(KERN_ERR "snirm710: request_irq failed!\n");
92		goto out_put_host;
93	}
94
95	dev_set_drvdata(&dev->dev, host);
96	scsi_scan_host(host);
97
98	return 0;
99
100 out_put_host:
101	scsi_host_put(host);
102 out_kfree:
103	iounmap(hostdata->base);
104	kfree(hostdata);
105	return -ENODEV;
106}
107
108static int snirm710_driver_remove(struct platform_device *dev)
109{
110	struct Scsi_Host *host = dev_get_drvdata(&dev->dev);
111	struct NCR_700_Host_Parameters *hostdata =
112		(struct NCR_700_Host_Parameters *)host->hostdata[0];
113
114	scsi_remove_host(host);
115	NCR_700_release(host);
116	free_irq(host->irq, host);
117	iounmap(hostdata->base);
118	kfree(hostdata);
119
120	return 0;
121}
122
123static struct platform_driver snirm710_driver = {
124	.probe	= snirm710_probe,
125	.remove	= snirm710_driver_remove,
126	.driver	= {
127		.name	= "snirm_53c710",
128	},
129};
130module_platform_driver(snirm710_driver);
131