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74ba9207 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 LT |
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 | ** | |
1da177e4 LT |
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> | |
1da177e4 LT |
29 | #include <linux/ioport.h> |
30 | #include <linux/dma-mapping.h> | |
5a0e3ad6 | 31 | #include <linux/slab.h> |
1da177e4 LT |
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 | ||
6ade2a0b | 72 | static const struct parisc_device_id lasi700_ids[] __initconst = { |
1da177e4 LT |
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 | { | |
53f01bba | 89 | unsigned long base = dev->hpa.start + LASI_SCSI_CORE_OFFSET; |
1da177e4 LT |
90 | struct NCR_700_Host_Parameters *hostdata; |
91 | struct Scsi_Host *host; | |
92 | ||
dd00cc48 | 93 | hostdata = kzalloc(sizeof(*hostdata), GFP_KERNEL); |
1da177e4 | 94 | if (!hostdata) { |
7f384ce7 | 95 | dev_printk(KERN_ERR, &dev->dev, "Failed to allocate host data\n"); |
1da177e4 LT |
96 | return -ENOMEM; |
97 | } | |
1da177e4 LT |
98 | |
99 | hostdata->dev = &dev->dev; | |
284901a9 | 100 | dma_set_mask(&dev->dev, DMA_BIT_MASK(32)); |
4bdc0d67 | 101 | hostdata->base = ioremap(base, 0x100); |
1da177e4 LT |
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; | |
f67a9c15 | 112 | hostdata->burst_length = 8; |
1da177e4 LT |
113 | } |
114 | ||
1da177e4 LT |
115 | host = NCR_700_detect(&lasi700_template, hostdata, &dev->dev); |
116 | if (!host) | |
117 | goto out_kfree; | |
118 | host->this_id = 7; | |
56fece20 | 119 | host->base = base; |
1da177e4 | 120 | host->irq = dev->irq; |
1d6f359a | 121 | if(request_irq(dev->irq, NCR_700_intr, IRQF_SHARED, "lasi700", host)) { |
1da177e4 LT |
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 | ||
6ade2a0b | 155 | static struct parisc_driver lasi700_driver __refdata = { |
bdad1f83 | 156 | .name = "lasi_scsi", |
1da177e4 LT |
157 | .id_table = lasi700_ids, |
158 | .probe = lasi700_probe, | |
6ade2a0b | 159 | .remove = __exit_p(lasi700_driver_remove), |
1da177e4 LT |
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); |