1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-or-later
2*4882a593Smuzhiyun /* -*- mode: c; c-basic-offset: 8 -*- */
3*4882a593Smuzhiyun
4*4882a593Smuzhiyun /* SNI RM driver
5*4882a593Smuzhiyun *
6*4882a593Smuzhiyun * Copyright (C) 2001 by James.Bottomley@HansenPartnership.com
7*4882a593Smuzhiyun **-----------------------------------------------------------------------------
8*4882a593Smuzhiyun **
9*4882a593Smuzhiyun **
10*4882a593Smuzhiyun **-----------------------------------------------------------------------------
11*4882a593Smuzhiyun */
12*4882a593Smuzhiyun
13*4882a593Smuzhiyun /*
14*4882a593Smuzhiyun * Based on lasi700.c
15*4882a593Smuzhiyun */
16*4882a593Smuzhiyun
17*4882a593Smuzhiyun #include <linux/kernel.h>
18*4882a593Smuzhiyun #include <linux/module.h>
19*4882a593Smuzhiyun #include <linux/init.h>
20*4882a593Smuzhiyun #include <linux/types.h>
21*4882a593Smuzhiyun #include <linux/slab.h>
22*4882a593Smuzhiyun #include <linux/stat.h>
23*4882a593Smuzhiyun #include <linux/mm.h>
24*4882a593Smuzhiyun #include <linux/blkdev.h>
25*4882a593Smuzhiyun #include <linux/sched.h>
26*4882a593Smuzhiyun #include <linux/ioport.h>
27*4882a593Smuzhiyun #include <linux/dma-mapping.h>
28*4882a593Smuzhiyun #include <linux/platform_device.h>
29*4882a593Smuzhiyun
30*4882a593Smuzhiyun #include <asm/page.h>
31*4882a593Smuzhiyun #include <asm/irq.h>
32*4882a593Smuzhiyun #include <asm/delay.h>
33*4882a593Smuzhiyun
34*4882a593Smuzhiyun #include <scsi/scsi_host.h>
35*4882a593Smuzhiyun #include <scsi/scsi_device.h>
36*4882a593Smuzhiyun #include <scsi/scsi_transport.h>
37*4882a593Smuzhiyun #include <scsi/scsi_transport_spi.h>
38*4882a593Smuzhiyun
39*4882a593Smuzhiyun #include "53c700.h"
40*4882a593Smuzhiyun
41*4882a593Smuzhiyun MODULE_AUTHOR("Thomas Bogendörfer");
42*4882a593Smuzhiyun MODULE_DESCRIPTION("SNI RM 53c710 SCSI Driver");
43*4882a593Smuzhiyun MODULE_LICENSE("GPL");
44*4882a593Smuzhiyun MODULE_ALIAS("platform:snirm_53c710");
45*4882a593Smuzhiyun
46*4882a593Smuzhiyun #define SNIRM710_CLOCK 32
47*4882a593Smuzhiyun
48*4882a593Smuzhiyun static struct scsi_host_template snirm710_template = {
49*4882a593Smuzhiyun .name = "SNI RM SCSI 53c710",
50*4882a593Smuzhiyun .proc_name = "snirm_53c710",
51*4882a593Smuzhiyun .this_id = 7,
52*4882a593Smuzhiyun .module = THIS_MODULE,
53*4882a593Smuzhiyun };
54*4882a593Smuzhiyun
snirm710_probe(struct platform_device * dev)55*4882a593Smuzhiyun static int snirm710_probe(struct platform_device *dev)
56*4882a593Smuzhiyun {
57*4882a593Smuzhiyun unsigned long base;
58*4882a593Smuzhiyun struct NCR_700_Host_Parameters *hostdata;
59*4882a593Smuzhiyun struct Scsi_Host *host;
60*4882a593Smuzhiyun struct resource *res;
61*4882a593Smuzhiyun int rc;
62*4882a593Smuzhiyun
63*4882a593Smuzhiyun res = platform_get_resource(dev, IORESOURCE_MEM, 0);
64*4882a593Smuzhiyun if (!res)
65*4882a593Smuzhiyun return -ENODEV;
66*4882a593Smuzhiyun
67*4882a593Smuzhiyun base = res->start;
68*4882a593Smuzhiyun hostdata = kzalloc(sizeof(*hostdata), GFP_KERNEL);
69*4882a593Smuzhiyun if (!hostdata)
70*4882a593Smuzhiyun return -ENOMEM;
71*4882a593Smuzhiyun
72*4882a593Smuzhiyun hostdata->dev = &dev->dev;
73*4882a593Smuzhiyun dma_set_mask(&dev->dev, DMA_BIT_MASK(32));
74*4882a593Smuzhiyun hostdata->base = ioremap(base, 0x100);
75*4882a593Smuzhiyun hostdata->differential = 0;
76*4882a593Smuzhiyun
77*4882a593Smuzhiyun hostdata->clock = SNIRM710_CLOCK;
78*4882a593Smuzhiyun hostdata->force_le_on_be = 1;
79*4882a593Smuzhiyun hostdata->chip710 = 1;
80*4882a593Smuzhiyun hostdata->burst_length = 4;
81*4882a593Smuzhiyun
82*4882a593Smuzhiyun host = NCR_700_detect(&snirm710_template, hostdata, &dev->dev);
83*4882a593Smuzhiyun if (!host)
84*4882a593Smuzhiyun goto out_kfree;
85*4882a593Smuzhiyun host->this_id = 7;
86*4882a593Smuzhiyun host->base = base;
87*4882a593Smuzhiyun host->irq = rc = platform_get_irq(dev, 0);
88*4882a593Smuzhiyun if (rc < 0)
89*4882a593Smuzhiyun goto out_put_host;
90*4882a593Smuzhiyun if(request_irq(host->irq, NCR_700_intr, IRQF_SHARED, "snirm710", host)) {
91*4882a593Smuzhiyun printk(KERN_ERR "snirm710: request_irq failed!\n");
92*4882a593Smuzhiyun goto out_put_host;
93*4882a593Smuzhiyun }
94*4882a593Smuzhiyun
95*4882a593Smuzhiyun dev_set_drvdata(&dev->dev, host);
96*4882a593Smuzhiyun scsi_scan_host(host);
97*4882a593Smuzhiyun
98*4882a593Smuzhiyun return 0;
99*4882a593Smuzhiyun
100*4882a593Smuzhiyun out_put_host:
101*4882a593Smuzhiyun scsi_host_put(host);
102*4882a593Smuzhiyun out_kfree:
103*4882a593Smuzhiyun iounmap(hostdata->base);
104*4882a593Smuzhiyun kfree(hostdata);
105*4882a593Smuzhiyun return -ENODEV;
106*4882a593Smuzhiyun }
107*4882a593Smuzhiyun
snirm710_driver_remove(struct platform_device * dev)108*4882a593Smuzhiyun static int snirm710_driver_remove(struct platform_device *dev)
109*4882a593Smuzhiyun {
110*4882a593Smuzhiyun struct Scsi_Host *host = dev_get_drvdata(&dev->dev);
111*4882a593Smuzhiyun struct NCR_700_Host_Parameters *hostdata =
112*4882a593Smuzhiyun (struct NCR_700_Host_Parameters *)host->hostdata[0];
113*4882a593Smuzhiyun
114*4882a593Smuzhiyun scsi_remove_host(host);
115*4882a593Smuzhiyun NCR_700_release(host);
116*4882a593Smuzhiyun free_irq(host->irq, host);
117*4882a593Smuzhiyun iounmap(hostdata->base);
118*4882a593Smuzhiyun kfree(hostdata);
119*4882a593Smuzhiyun
120*4882a593Smuzhiyun return 0;
121*4882a593Smuzhiyun }
122*4882a593Smuzhiyun
123*4882a593Smuzhiyun static struct platform_driver snirm710_driver = {
124*4882a593Smuzhiyun .probe = snirm710_probe,
125*4882a593Smuzhiyun .remove = snirm710_driver_remove,
126*4882a593Smuzhiyun .driver = {
127*4882a593Smuzhiyun .name = "snirm_53c710",
128*4882a593Smuzhiyun },
129*4882a593Smuzhiyun };
130*4882a593Smuzhiyun module_platform_driver(snirm710_driver);
131