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review.trustedfirmware.org / hafnium / third_party / linux.git / 0f672f6c0b52b7b0700b0915c72b540721af4465 / . / drivers / scsi / sni_53c710.c
blob: a85d52b5dc32094d04219b548619c2b7ea1de23f [file] [log] [blame]
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame^]1// SPDX-License-Identifier: GPL-2.0-or-later
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]2/* -*- mode: c; c-basic-offset: 8 -*- */
3
4/* SNI RM driver
5 *
6 * Copyright (C) 2001 by James.Bottomley@HansenPartnership.com
7**-----------------------------------------------------------------------------
8**
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]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/pgtable.h>
32#include <asm/irq.h>
33#include <asm/delay.h>
34
35#include <scsi/scsi_host.h>
36#include <scsi/scsi_device.h>
37#include <scsi/scsi_transport.h>
38#include <scsi/scsi_transport_spi.h>
39
40#include "53c700.h"
41
42MODULE_AUTHOR("Thomas Bogendörfer");
43MODULE_DESCRIPTION("SNI RM 53c710 SCSI Driver");
44MODULE_LICENSE("GPL");
45MODULE_ALIAS("platform:snirm_53c710");
46
47#define SNIRM710_CLOCK 32
48
49static struct scsi_host_template snirm710_template = {
50 .name = "SNI RM SCSI 53c710",
51 .proc_name = "snirm_53c710",
52 .this_id = 7,
53 .module = THIS_MODULE,
54};
55
56static int snirm710_probe(struct platform_device *dev)
57{
58 unsigned long base;
59 struct NCR_700_Host_Parameters *hostdata;
60 struct Scsi_Host *host;
61 struct resource *res;
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);
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame^]69 if (!hostdata)
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]70 return -ENOMEM;
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]71
72 hostdata->dev = &dev->dev;
73 dma_set_mask(&dev->dev, DMA_BIT_MASK(32));
74 hostdata->base = ioremap_nocache(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 = platform_get_irq(dev, 0);
88 if(request_irq(host->irq, NCR_700_intr, IRQF_SHARED, "snirm710", host)) {
89 printk(KERN_ERR "snirm710: request_irq failed!\n");
90 goto out_put_host;
91 }
92
93 dev_set_drvdata(&dev->dev, host);
94 scsi_scan_host(host);
95
96 return 0;
97
98 out_put_host:
99 scsi_host_put(host);
100 out_kfree:
101 iounmap(hostdata->base);
102 kfree(hostdata);
103 return -ENODEV;
104}
105
106static int snirm710_driver_remove(struct platform_device *dev)
107{
108 struct Scsi_Host *host = dev_get_drvdata(&dev->dev);
109 struct NCR_700_Host_Parameters *hostdata =
110 (struct NCR_700_Host_Parameters *)host->hostdata[0];
111
112 scsi_remove_host(host);
113 NCR_700_release(host);
114 free_irq(host->irq, host);
115 iounmap(hostdata->base);
116 kfree(hostdata);
117
118 return 0;
119}
120
121static struct platform_driver snirm710_driver = {
122 .probe = snirm710_probe,
123 .remove = snirm710_driver_remove,
124 .driver = {
125 .name = "snirm_53c710",
126 },
127};
128
129static int __init snirm710_init(void)
130{
131 return platform_driver_register(&snirm710_driver);
132}
133
134static void __exit snirm710_exit(void)
135{
136 platform_driver_unregister(&snirm710_driver);
137}
138
139module_init(snirm710_init);
140module_exit(snirm710_exit);