Merge tag 'trace-v5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux...
[linux-2.6-microblaze.git] / drivers / scsi / lasi700.c
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /* -*- mode: c; c-basic-offset: 8 -*- */
3
4 /* PARISC LASI driver for the 53c700 chip
5  *
6  * Copyright (C) 2001 by James.Bottomley@HansenPartnership.com
7 **-----------------------------------------------------------------------------
8 **  
9 **
10 **-----------------------------------------------------------------------------
11  */
12
13 /*
14  * Many thanks to Richard Hirst <rhirst@linuxcare.com> for patiently
15  * debugging this driver on the parisc architecture and suggesting
16  * many improvements and bug fixes.
17  *
18  * Thanks also go to Linuxcare Inc. for providing several PARISC
19  * machines for me to debug the driver on.
20  */
21
22 #include <linux/kernel.h>
23 #include <linux/module.h>
24 #include <linux/init.h>
25 #include <linux/types.h>
26 #include <linux/stat.h>
27 #include <linux/mm.h>
28 #include <linux/blkdev.h>
29 #include <linux/ioport.h>
30 #include <linux/dma-mapping.h>
31 #include <linux/slab.h>
32
33 #include <asm/page.h>
34 #include <asm/pgtable.h>
35 #include <asm/irq.h>
36 #include <asm/hardware.h>
37 #include <asm/parisc-device.h>
38 #include <asm/delay.h>
39
40 #include <scsi/scsi_host.h>
41 #include <scsi/scsi_device.h>
42 #include <scsi/scsi_transport.h>
43 #include <scsi/scsi_transport_spi.h>
44
45 #include "53c700.h"
46
47 MODULE_AUTHOR("James Bottomley");
48 MODULE_DESCRIPTION("lasi700 SCSI Driver");
49 MODULE_LICENSE("GPL");
50
51 #define LASI_700_SVERSION 0x00071
52 #define LASI_710_SVERSION 0x00082
53
54 #define LASI700_ID_TABLE {                      \
55         .hw_type        = HPHW_FIO,             \
56         .sversion       = LASI_700_SVERSION,    \
57         .hversion       = HVERSION_ANY_ID,      \
58         .hversion_rev   = HVERSION_REV_ANY_ID,  \
59 }
60
61 #define LASI710_ID_TABLE {                      \
62         .hw_type        = HPHW_FIO,             \
63         .sversion       = LASI_710_SVERSION,    \
64         .hversion       = HVERSION_ANY_ID,      \
65         .hversion_rev   = HVERSION_REV_ANY_ID,  \
66 }
67
68 #define LASI700_CLOCK   25
69 #define LASI710_CLOCK   40
70 #define LASI_SCSI_CORE_OFFSET 0x100
71
72 static const struct parisc_device_id lasi700_ids[] __initconst = {
73         LASI700_ID_TABLE,
74         LASI710_ID_TABLE,
75         { 0 }
76 };
77
78 static struct scsi_host_template lasi700_template = {
79         .name           = "LASI SCSI 53c700",
80         .proc_name      = "lasi700",
81         .this_id        = 7,
82         .module         = THIS_MODULE,
83 };
84 MODULE_DEVICE_TABLE(parisc, lasi700_ids);
85
86 static int __init
87 lasi700_probe(struct parisc_device *dev)
88 {
89         unsigned long base = dev->hpa.start + LASI_SCSI_CORE_OFFSET;
90         struct NCR_700_Host_Parameters *hostdata;
91         struct Scsi_Host *host;
92
93         hostdata = kzalloc(sizeof(*hostdata), GFP_KERNEL);
94         if (!hostdata) {
95                 dev_printk(KERN_ERR, &dev->dev, "Failed to allocate host data\n");
96                 return -ENOMEM;
97         }
98
99         hostdata->dev = &dev->dev;
100         dma_set_mask(&dev->dev, DMA_BIT_MASK(32));
101         hostdata->base = ioremap_nocache(base, 0x100);
102         hostdata->differential = 0;
103
104         if (dev->id.sversion == LASI_700_SVERSION) {
105                 hostdata->clock = LASI700_CLOCK;
106                 hostdata->force_le_on_be = 1;
107         } else {
108                 hostdata->clock = LASI710_CLOCK;
109                 hostdata->force_le_on_be = 0;
110                 hostdata->chip710 = 1;
111                 hostdata->dmode_extra = DMODE_FC2;
112                 hostdata->burst_length = 8;
113         }
114
115         host = NCR_700_detect(&lasi700_template, hostdata, &dev->dev);
116         if (!host)
117                 goto out_kfree;
118         host->this_id = 7;
119         host->base = base;
120         host->irq = dev->irq;
121         if(request_irq(dev->irq, NCR_700_intr, IRQF_SHARED, "lasi700", host)) {
122                 printk(KERN_ERR "lasi700: request_irq failed!\n");
123                 goto out_put_host;
124         }
125
126         dev_set_drvdata(&dev->dev, host);
127         scsi_scan_host(host);
128
129         return 0;
130
131  out_put_host:
132         scsi_host_put(host);
133  out_kfree:
134         iounmap(hostdata->base);
135         kfree(hostdata);
136         return -ENODEV;
137 }
138
139 static int __exit
140 lasi700_driver_remove(struct parisc_device *dev)
141 {
142         struct Scsi_Host *host = dev_get_drvdata(&dev->dev);
143         struct NCR_700_Host_Parameters *hostdata = 
144                 (struct NCR_700_Host_Parameters *)host->hostdata[0];
145
146         scsi_remove_host(host);
147         NCR_700_release(host);
148         free_irq(host->irq, host);
149         iounmap(hostdata->base);
150         kfree(hostdata);
151
152         return 0;
153 }
154
155 static struct parisc_driver lasi700_driver __refdata = {
156         .name =         "lasi_scsi",
157         .id_table =     lasi700_ids,
158         .probe =        lasi700_probe,
159         .remove =       __exit_p(lasi700_driver_remove),
160 };
161
162 static int __init
163 lasi700_init(void)
164 {
165         return register_parisc_driver(&lasi700_driver);
166 }
167
168 static void __exit
169 lasi700_exit(void)
170 {
171         unregister_parisc_driver(&lasi700_driver);
172 }
173
174 module_init(lasi700_init);
175 module_exit(lasi700_exit);