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16#include <linux/module.h>
17#include <linux/slab.h>
18
19#include <linux/blkdev.h>
20#include <linux/device.h>
21#include <linux/init.h>
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
32
33#define MAX_SLOTS 8
34static __u8 __initdata id_array[MAX_SLOTS] = { [0 ... MAX_SLOTS-1] = 7 };
35
36static char *sim710;
37
38MODULE_AUTHOR("Richard Hirst");
39MODULE_DESCRIPTION("Simple NCR53C710 driver");
40MODULE_LICENSE("GPL");
41
42module_param(sim710, charp, 0);
43
44#ifdef MODULE
45#define ARG_SEP ' '
46#else
47#define ARG_SEP ','
48#endif
49
50static __init int
51param_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");
64 } else if(slot >= MAX_SLOTS) {
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
77static struct scsi_host_template sim710_driver_template = {
78 .name = "LSI (Symbios) 710 EISA",
79 .proc_name = "sim710",
80 .this_id = 7,
81 .module = THIS_MODULE,
82};
83
84static int sim710_probe_common(struct device *dev, unsigned long base_addr,
85 int irq, int clock, int differential,
86 int scsi_id)
87{
88 struct Scsi_Host * host = NULL;
89 struct NCR_700_Host_Parameters *hostdata =
90 kzalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL);
91
92 printk(KERN_NOTICE "sim710: %s\n", dev_name(dev));
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 }
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
108 hostdata->base = ioport_map(base_addr, 64);
109 hostdata->differential = differential;
110 hostdata->clock = clock;
111 hostdata->chip710 = 1;
112 hostdata->burst_length = 8;
113
114
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;
121 host->base = base_addr;
122 host->irq = irq;
123 if (request_irq(irq, NCR_700_intr, IRQF_SHARED, "sim710", host)) {
124 printk(KERN_ERR "sim710: request_irq failed\n");
125 goto out_put_host;
126 }
127
128 dev_set_drvdata(dev, host);
129 scsi_scan_host(host);
130
131 return 0;
132
133 out_put_host:
134 scsi_host_put(host);
135 out_release:
136 release_region(base_addr, 64);
137 out_free:
138 kfree(hostdata);
139 out:
140 return -ENODEV;
141}
142
143static int sim710_device_remove(struct device *dev)
144{
145 struct Scsi_Host *host = dev_get_drvdata(dev);
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);
153 release_region(host->base, 64);
154 return 0;
155}
156
157#ifdef CONFIG_EISA
158static struct eisa_device_id sim710_eisa_ids[] = {
159 { "CPQ4410" },
160 { "CPQ4411" },
161 { "HWP0C80" },
162 { "" }
163};
164MODULE_DEVICE_TABLE(eisa, sim710_eisa_ids);
165
166static int sim710_eisa_probe(struct device *dev)
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) {
185 printk(KERN_ERR "sim710.c, EISA card %s has incorrect scsi_id, setting to 7\n", dev_name(dev));
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
204static struct eisa_driver sim710_eisa_driver = {
205 .id_table = sim710_eisa_ids,
206 .driver = {
207 .name = "sim710",
208 .probe = sim710_eisa_probe,
209 .remove = sim710_device_remove,
210 },
211};
212#endif
213
214static int __init sim710_init(void)
215{
216 int err = -ENODEV;
217
218#ifdef MODULE
219 if (sim710)
220 param_setup(sim710);
221#endif
222
223#ifdef CONFIG_EISA
224 err = eisa_driver_register(&sim710_eisa_driver);
225#endif
226
227
228
229
230
231 return 0;
232}
233
234static void __exit sim710_exit(void)
235{
236#ifdef CONFIG_EISA
237 eisa_driver_unregister(&sim710_eisa_driver);
238#endif
239}
240
241module_init(sim710_init);
242module_exit(sim710_exit);
243
