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74ba9207 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 LT |
2 | |
3 | /* PARISC LASI driver for the 53c700 chip | |
4 | * | |
5 | * Copyright (C) 2001 by James.Bottomley@HansenPartnership.com | |
6 | **----------------------------------------------------------------------------- | |
7 | ** | |
1da177e4 LT |
8 | ** |
9 | **----------------------------------------------------------------------------- | |
10 | */ | |
11 | ||
12 | /* | |
13 | * Many thanks to Richard Hirst <rhirst@linuxcare.com> for patiently | |
14 | * debugging this driver on the parisc architecture and suggesting | |
15 | * many improvements and bug fixes. | |
16 | * | |
17 | * Thanks also go to Linuxcare Inc. for providing several PARISC | |
18 | * machines for me to debug the driver on. | |
19 | */ | |
20 | ||
21 | #include <linux/kernel.h> | |
22 | #include <linux/module.h> | |
23 | #include <linux/init.h> | |
24 | #include <linux/types.h> | |
25 | #include <linux/stat.h> | |
26 | #include <linux/mm.h> | |
27 | #include <linux/blkdev.h> | |
1da177e4 LT |
28 | #include <linux/ioport.h> |
29 | #include <linux/dma-mapping.h> | |
5a0e3ad6 | 30 | #include <linux/slab.h> |
1da177e4 LT |
31 | |
32 | #include <asm/page.h> | |
1da177e4 LT |
33 | #include <asm/irq.h> |
34 | #include <asm/hardware.h> | |
35 | #include <asm/parisc-device.h> | |
36 | #include <asm/delay.h> | |
37 | ||
38 | #include <scsi/scsi_host.h> | |
39 | #include <scsi/scsi_device.h> | |
40 | #include <scsi/scsi_transport.h> | |
41 | #include <scsi/scsi_transport_spi.h> | |
42 | ||
43 | #include "53c700.h" | |
44 | ||
45 | MODULE_AUTHOR("James Bottomley"); | |
46 | MODULE_DESCRIPTION("lasi700 SCSI Driver"); | |
47 | MODULE_LICENSE("GPL"); | |
48 | ||
49 | #define LASI_700_SVERSION 0x00071 | |
50 | #define LASI_710_SVERSION 0x00082 | |
51 | ||
52 | #define LASI700_ID_TABLE { \ | |
53 | .hw_type = HPHW_FIO, \ | |
54 | .sversion = LASI_700_SVERSION, \ | |
55 | .hversion = HVERSION_ANY_ID, \ | |
56 | .hversion_rev = HVERSION_REV_ANY_ID, \ | |
57 | } | |
58 | ||
59 | #define LASI710_ID_TABLE { \ | |
60 | .hw_type = HPHW_FIO, \ | |
61 | .sversion = LASI_710_SVERSION, \ | |
62 | .hversion = HVERSION_ANY_ID, \ | |
63 | .hversion_rev = HVERSION_REV_ANY_ID, \ | |
64 | } | |
65 | ||
66 | #define LASI700_CLOCK 25 | |
67 | #define LASI710_CLOCK 40 | |
68 | #define LASI_SCSI_CORE_OFFSET 0x100 | |
69 | ||
6ade2a0b | 70 | static const struct parisc_device_id lasi700_ids[] __initconst = { |
1da177e4 LT |
71 | LASI700_ID_TABLE, |
72 | LASI710_ID_TABLE, | |
73 | { 0 } | |
74 | }; | |
75 | ||
76 | static struct scsi_host_template lasi700_template = { | |
77 | .name = "LASI SCSI 53c700", | |
78 | .proc_name = "lasi700", | |
79 | .this_id = 7, | |
80 | .module = THIS_MODULE, | |
81 | }; | |
82 | MODULE_DEVICE_TABLE(parisc, lasi700_ids); | |
83 | ||
84 | static int __init | |
85 | lasi700_probe(struct parisc_device *dev) | |
86 | { | |
53f01bba | 87 | unsigned long base = dev->hpa.start + LASI_SCSI_CORE_OFFSET; |
1da177e4 LT |
88 | struct NCR_700_Host_Parameters *hostdata; |
89 | struct Scsi_Host *host; | |
90 | ||
dd00cc48 | 91 | hostdata = kzalloc(sizeof(*hostdata), GFP_KERNEL); |
1da177e4 | 92 | if (!hostdata) { |
7f384ce7 | 93 | dev_printk(KERN_ERR, &dev->dev, "Failed to allocate host data\n"); |
1da177e4 LT |
94 | return -ENOMEM; |
95 | } | |
1da177e4 LT |
96 | |
97 | hostdata->dev = &dev->dev; | |
284901a9 | 98 | dma_set_mask(&dev->dev, DMA_BIT_MASK(32)); |
4bdc0d67 | 99 | hostdata->base = ioremap(base, 0x100); |
1da177e4 LT |
100 | hostdata->differential = 0; |
101 | ||
102 | if (dev->id.sversion == LASI_700_SVERSION) { | |
103 | hostdata->clock = LASI700_CLOCK; | |
104 | hostdata->force_le_on_be = 1; | |
105 | } else { | |
106 | hostdata->clock = LASI710_CLOCK; | |
107 | hostdata->force_le_on_be = 0; | |
108 | hostdata->chip710 = 1; | |
109 | hostdata->dmode_extra = DMODE_FC2; | |
f67a9c15 | 110 | hostdata->burst_length = 8; |
1da177e4 LT |
111 | } |
112 | ||
1da177e4 LT |
113 | host = NCR_700_detect(&lasi700_template, hostdata, &dev->dev); |
114 | if (!host) | |
115 | goto out_kfree; | |
116 | host->this_id = 7; | |
56fece20 | 117 | host->base = base; |
1da177e4 | 118 | host->irq = dev->irq; |
1d6f359a | 119 | if(request_irq(dev->irq, NCR_700_intr, IRQF_SHARED, "lasi700", host)) { |
1da177e4 LT |
120 | printk(KERN_ERR "lasi700: request_irq failed!\n"); |
121 | goto out_put_host; | |
122 | } | |
123 | ||
124 | dev_set_drvdata(&dev->dev, host); | |
125 | scsi_scan_host(host); | |
126 | ||
127 | return 0; | |
128 | ||
129 | out_put_host: | |
130 | scsi_host_put(host); | |
131 | out_kfree: | |
132 | iounmap(hostdata->base); | |
133 | kfree(hostdata); | |
134 | return -ENODEV; | |
135 | } | |
136 | ||
87875c10 | 137 | static void __exit |
1da177e4 LT |
138 | lasi700_driver_remove(struct parisc_device *dev) |
139 | { | |
140 | struct Scsi_Host *host = dev_get_drvdata(&dev->dev); | |
141 | struct NCR_700_Host_Parameters *hostdata = | |
142 | (struct NCR_700_Host_Parameters *)host->hostdata[0]; | |
143 | ||
144 | scsi_remove_host(host); | |
145 | NCR_700_release(host); | |
146 | free_irq(host->irq, host); | |
147 | iounmap(hostdata->base); | |
148 | kfree(hostdata); | |
1da177e4 LT |
149 | } |
150 | ||
6ade2a0b | 151 | static struct parisc_driver lasi700_driver __refdata = { |
bdad1f83 | 152 | .name = "lasi_scsi", |
1da177e4 LT |
153 | .id_table = lasi700_ids, |
154 | .probe = lasi700_probe, | |
6ade2a0b | 155 | .remove = __exit_p(lasi700_driver_remove), |
1da177e4 LT |
156 | }; |
157 | ||
158 | static int __init | |
159 | lasi700_init(void) | |
160 | { | |
161 | return register_parisc_driver(&lasi700_driver); | |
162 | } | |
163 | ||
164 | static void __exit | |
165 | lasi700_exit(void) | |
166 | { | |
167 | unregister_parisc_driver(&lasi700_driver); | |
168 | } | |
169 | ||
170 | module_init(lasi700_init); | |
171 | module_exit(lasi700_exit); |