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74ba9207 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 LT |
2 | /* |
3 | * sim710.c - Copyright (C) 1999 Richard Hirst <richard@sleepie.demon.co.uk> | |
4 | * | |
5 | *---------------------------------------------------------------------------- | |
1da177e4 LT |
6 | *---------------------------------------------------------------------------- |
7 | * | |
a88dc06c | 8 | * MCA card detection code by Trent McNair. (now deleted) |
1da177e4 LT |
9 | * Fixes to not explicitly nul bss data from Xavier Bestel. |
10 | * Some multiboard fixes from Rolf Eike Beer. | |
11 | * Auto probing of EISA config space from Trevor Hemsley. | |
12 | * | |
13 | * Rewritten to use 53c700.c by James.Bottomley@SteelEye.com | |
1da177e4 LT |
14 | */ |
15 | ||
1da177e4 | 16 | #include <linux/module.h> |
5a0e3ad6 | 17 | #include <linux/slab.h> |
1da177e4 LT |
18 | |
19 | #include <linux/blkdev.h> | |
20 | #include <linux/device.h> | |
21 | #include <linux/init.h> | |
1da177e4 LT |
22 | #include <linux/eisa.h> |
23 | #include <linux/interrupt.h> | |
24 | #include <scsi/scsi_host.h> | |
25 | #include <scsi/scsi_device.h> | |
26 | #include <scsi/scsi_transport.h> | |
27 | #include <scsi/scsi_transport_spi.h> | |
28 | ||
29 | #include "53c700.h" | |
30 | ||
31 | ||
a88dc06c | 32 | /* Must be enough for EISA */ |
1da177e4 LT |
33 | #define MAX_SLOTS 8 |
34 | static __u8 __initdata id_array[MAX_SLOTS] = { [0 ... MAX_SLOTS-1] = 7 }; | |
35 | ||
36 | static char *sim710; /* command line passed by insmod */ | |
37 | ||
38 | MODULE_AUTHOR("Richard Hirst"); | |
39 | MODULE_DESCRIPTION("Simple NCR53C710 driver"); | |
40 | MODULE_LICENSE("GPL"); | |
41 | ||
42 | module_param(sim710, charp, 0); | |
43 | ||
44 | #ifdef MODULE | |
45 | #define ARG_SEP ' ' | |
46 | #else | |
47 | #define ARG_SEP ',' | |
48 | #endif | |
49 | ||
50 | static __init int | |
51 | param_setup(char *str) | |
52 | { | |
53 | char *pos = str, *next; | |
54 | int slot = -1; | |
55 | ||
56 | while(pos != NULL && (next = strchr(pos, ':')) != NULL) { | |
57 | int val = (int)simple_strtoul(++next, NULL, 0); | |
58 | ||
59 | if(!strncmp(pos, "slot:", 5)) | |
60 | slot = val; | |
61 | else if(!strncmp(pos, "id:", 3)) { | |
62 | if(slot == -1) { | |
63 | printk(KERN_WARNING "sim710: Must specify slot for id parameter\n"); | |
1a34456b | 64 | } else if(slot >= MAX_SLOTS) { |
1da177e4 LT |
65 | printk(KERN_WARNING "sim710: Illegal slot %d for id %d\n", slot, val); |
66 | } else { | |
67 | id_array[slot] = val; | |
68 | } | |
69 | } | |
70 | if((pos = strchr(pos, ARG_SEP)) != NULL) | |
71 | pos++; | |
72 | } | |
73 | return 1; | |
74 | } | |
75 | __setup("sim710=", param_setup); | |
76 | ||
77 | static struct scsi_host_template sim710_driver_template = { | |
a88dc06c | 78 | .name = "LSI (Symbios) 710 EISA", |
1da177e4 LT |
79 | .proc_name = "sim710", |
80 | .this_id = 7, | |
81 | .module = THIS_MODULE, | |
82 | }; | |
83 | ||
6f039790 GKH |
84 | static int sim710_probe_common(struct device *dev, unsigned long base_addr, |
85 | int irq, int clock, int differential, | |
86 | int scsi_id) | |
1da177e4 LT |
87 | { |
88 | struct Scsi_Host * host = NULL; | |
89 | struct NCR_700_Host_Parameters *hostdata = | |
dd00cc48 | 90 | kzalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL); |
1da177e4 | 91 | |
71610f55 | 92 | printk(KERN_NOTICE "sim710: %s\n", dev_name(dev)); |
1da177e4 LT |
93 | printk(KERN_NOTICE "sim710: irq = %d, clock = %d, base = 0x%lx, scsi_id = %d\n", |
94 | irq, clock, base_addr, scsi_id); | |
95 | ||
96 | if(hostdata == NULL) { | |
97 | printk(KERN_ERR "sim710: Failed to allocate host data\n"); | |
98 | goto out; | |
99 | } | |
1da177e4 LT |
100 | |
101 | if(request_region(base_addr, 64, "sim710") == NULL) { | |
102 | printk(KERN_ERR "sim710: Failed to reserve IO region 0x%lx\n", | |
103 | base_addr); | |
104 | goto out_free; | |
105 | } | |
106 | ||
107 | /* Fill in the three required pieces of hostdata */ | |
56fece20 | 108 | hostdata->base = ioport_map(base_addr, 64); |
1da177e4 LT |
109 | hostdata->differential = differential; |
110 | hostdata->clock = clock; | |
111 | hostdata->chip710 = 1; | |
f67a9c15 | 112 | hostdata->burst_length = 8; |
1da177e4 LT |
113 | |
114 | /* and register the chip */ | |
115 | if((host = NCR_700_detect(&sim710_driver_template, hostdata, dev)) | |
116 | == NULL) { | |
117 | printk(KERN_ERR "sim710: No host detected; card configuration problem?\n"); | |
118 | goto out_release; | |
119 | } | |
120 | host->this_id = scsi_id; | |
56fece20 | 121 | host->base = base_addr; |
1da177e4 | 122 | host->irq = irq; |
1d6f359a | 123 | if (request_irq(irq, NCR_700_intr, IRQF_SHARED, "sim710", host)) { |
1da177e4 LT |
124 | printk(KERN_ERR "sim710: request_irq failed\n"); |
125 | goto out_put_host; | |
126 | } | |
127 | ||
3ac709c1 | 128 | dev_set_drvdata(dev, host); |
1da177e4 LT |
129 | scsi_scan_host(host); |
130 | ||
131 | return 0; | |
132 | ||
133 | out_put_host: | |
134 | scsi_host_put(host); | |
135 | out_release: | |
a1d4f73a | 136 | release_region(base_addr, 64); |
1da177e4 LT |
137 | out_free: |
138 | kfree(hostdata); | |
139 | out: | |
140 | return -ENODEV; | |
141 | } | |
142 | ||
6f039790 | 143 | static int sim710_device_remove(struct device *dev) |
1da177e4 | 144 | { |
3ac709c1 | 145 | struct Scsi_Host *host = dev_get_drvdata(dev); |
1da177e4 LT |
146 | struct NCR_700_Host_Parameters *hostdata = |
147 | (struct NCR_700_Host_Parameters *)host->hostdata[0]; | |
148 | ||
149 | scsi_remove_host(host); | |
150 | NCR_700_release(host); | |
151 | kfree(hostdata); | |
152 | free_irq(host->irq, host); | |
56fece20 | 153 | release_region(host->base, 64); |
1da177e4 LT |
154 | return 0; |
155 | } | |
156 | ||
1da177e4 LT |
157 | #ifdef CONFIG_EISA |
158 | static struct eisa_device_id sim710_eisa_ids[] = { | |
159 | { "CPQ4410" }, | |
160 | { "CPQ4411" }, | |
161 | { "HWP0C80" }, | |
162 | { "" } | |
163 | }; | |
07563c71 | 164 | MODULE_DEVICE_TABLE(eisa, sim710_eisa_ids); |
1da177e4 | 165 | |
648a0a7d | 166 | static int sim710_eisa_probe(struct device *dev) |
1da177e4 LT |
167 | { |
168 | struct eisa_device *edev = to_eisa_device(dev); | |
169 | unsigned long io_addr = edev->base_addr; | |
170 | char eisa_cpq_irqs[] = { 11, 14, 15, 10, 9, 0 }; | |
171 | char eisa_hwp_irqs[] = { 3, 4, 5, 7, 12, 10, 11, 0}; | |
172 | char *eisa_irqs; | |
173 | unsigned char irq_index; | |
174 | unsigned char irq, differential = 0, scsi_id = 7; | |
175 | ||
176 | if(strcmp(edev->id.sig, "HWP0C80") == 0) { | |
177 | __u8 val; | |
178 | eisa_irqs = eisa_hwp_irqs; | |
179 | irq_index = (inb(io_addr + 0xc85) & 0x7) - 1; | |
180 | ||
181 | val = inb(io_addr + 0x4); | |
182 | scsi_id = ffs(val) - 1; | |
183 | ||
184 | if(scsi_id > 7 || (val & ~(1<<scsi_id)) != 0) { | |
71610f55 | 185 | printk(KERN_ERR "sim710.c, EISA card %s has incorrect scsi_id, setting to 7\n", dev_name(dev)); |
1da177e4 LT |
186 | scsi_id = 7; |
187 | } | |
188 | } else { | |
189 | eisa_irqs = eisa_cpq_irqs; | |
190 | irq_index = inb(io_addr + 0xc88) & 0x07; | |
191 | } | |
192 | ||
193 | if(irq_index >= strlen(eisa_irqs)) { | |
194 | printk("sim710.c: irq nasty\n"); | |
195 | return -ENODEV; | |
196 | } | |
197 | ||
198 | irq = eisa_irqs[irq_index]; | |
199 | ||
200 | return sim710_probe_common(dev, io_addr, irq, 50, | |
201 | differential, scsi_id); | |
202 | } | |
203 | ||
204 | static struct eisa_driver sim710_eisa_driver = { | |
205 | .id_table = sim710_eisa_ids, | |
206 | .driver = { | |
207 | .name = "sim710", | |
208 | .probe = sim710_eisa_probe, | |
6f039790 | 209 | .remove = sim710_device_remove, |
1da177e4 LT |
210 | }, |
211 | }; | |
212 | #endif /* CONFIG_EISA */ | |
213 | ||
214 | static int __init sim710_init(void) | |
215 | { | |
216 | int err = -ENODEV; | |
217 | ||
218 | #ifdef MODULE | |
219 | if (sim710) | |
220 | param_setup(sim710); | |
221 | #endif | |
222 | ||
1da177e4 LT |
223 | #ifdef CONFIG_EISA |
224 | err = eisa_driver_register(&sim710_eisa_driver); | |
225 | #endif | |
226 | /* FIXME: what we'd really like to return here is -ENODEV if | |
227 | * no devices have actually been found. Instead, the err | |
228 | * above actually only reports problems with kobject_register, | |
229 | * so for the moment return success */ | |
230 | ||
231 | return 0; | |
232 | } | |
233 | ||
234 | static void __exit sim710_exit(void) | |
235 | { | |
1da177e4 LT |
236 | #ifdef CONFIG_EISA |
237 | eisa_driver_unregister(&sim710_eisa_driver); | |
238 | #endif | |
239 | } | |
240 | ||
241 | module_init(sim710_init); | |
242 | module_exit(sim710_exit); |