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29#include <linux/module.h>
30#include <linux/slab.h>
31
32#include <linux/blkdev.h>
33#include <linux/device.h>
34#include <linux/init.h>
35#include <linux/eisa.h>
36#include <linux/interrupt.h>
37#include <scsi/scsi_host.h>
38#include <scsi/scsi_device.h>
39#include <scsi/scsi_transport.h>
40#include <scsi/scsi_transport_spi.h>
41
42#include "53c700.h"
43
44
45
46#define MAX_SLOTS 8
47static __u8 __initdata id_array[MAX_SLOTS] = { [0 ... MAX_SLOTS-1] = 7 };
48
49static char *sim710;
50
51MODULE_AUTHOR("Richard Hirst");
52MODULE_DESCRIPTION("Simple NCR53C710 driver");
53MODULE_LICENSE("GPL");
54
55module_param(sim710, charp, 0);
56
57#ifdef MODULE
58#define ARG_SEP ' '
59#else
60#define ARG_SEP ','
61#endif
62
63static __init int
64param_setup(char *str)
65{
66 char *pos = str, *next;
67 int slot = -1;
68
69 while(pos != NULL && (next = strchr(pos, ':')) != NULL) {
70 int val = (int)simple_strtoul(++next, NULL, 0);
71
72 if(!strncmp(pos, "slot:", 5))
73 slot = val;
74 else if(!strncmp(pos, "id:", 3)) {
75 if(slot == -1) {
76 printk(KERN_WARNING "sim710: Must specify slot for id parameter\n");
77 } else if(slot >= MAX_SLOTS) {
78 printk(KERN_WARNING "sim710: Illegal slot %d for id %d\n", slot, val);
79 } else {
80 id_array[slot] = val;
81 }
82 }
83 if((pos = strchr(pos, ARG_SEP)) != NULL)
84 pos++;
85 }
86 return 1;
87}
88__setup("sim710=", param_setup);
89
90static struct scsi_host_template sim710_driver_template = {
91 .name = "LSI (Symbios) 710 EISA",
92 .proc_name = "sim710",
93 .this_id = 7,
94 .module = THIS_MODULE,
95};
96
97static int sim710_probe_common(struct device *dev, unsigned long base_addr,
98 int irq, int clock, int differential,
99 int scsi_id)
100{
101 struct Scsi_Host * host = NULL;
102 struct NCR_700_Host_Parameters *hostdata =
103 kzalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL);
104
105 printk(KERN_NOTICE "sim710: %s\n", dev_name(dev));
106 printk(KERN_NOTICE "sim710: irq = %d, clock = %d, base = 0x%lx, scsi_id = %d\n",
107 irq, clock, base_addr, scsi_id);
108
109 if(hostdata == NULL) {
110 printk(KERN_ERR "sim710: Failed to allocate host data\n");
111 goto out;
112 }
113
114 if(request_region(base_addr, 64, "sim710") == NULL) {
115 printk(KERN_ERR "sim710: Failed to reserve IO region 0x%lx\n",
116 base_addr);
117 goto out_free;
118 }
119
120
121 hostdata->base = ioport_map(base_addr, 64);
122 hostdata->differential = differential;
123 hostdata->clock = clock;
124 hostdata->chip710 = 1;
125 hostdata->burst_length = 8;
126
127
128 if((host = NCR_700_detect(&sim710_driver_template, hostdata, dev))
129 == NULL) {
130 printk(KERN_ERR "sim710: No host detected; card configuration problem?\n");
131 goto out_release;
132 }
133 host->this_id = scsi_id;
134 host->base = base_addr;
135 host->irq = irq;
136 if (request_irq(irq, NCR_700_intr, IRQF_SHARED, "sim710", host)) {
137 printk(KERN_ERR "sim710: request_irq failed\n");
138 goto out_put_host;
139 }
140
141 dev_set_drvdata(dev, host);
142 scsi_scan_host(host);
143
144 return 0;
145
146 out_put_host:
147 scsi_host_put(host);
148 out_release:
149 release_region(base_addr, 64);
150 out_free:
151 kfree(hostdata);
152 out:
153 return -ENODEV;
154}
155
156static int sim710_device_remove(struct device *dev)
157{
158 struct Scsi_Host *host = dev_get_drvdata(dev);
159 struct NCR_700_Host_Parameters *hostdata =
160 (struct NCR_700_Host_Parameters *)host->hostdata[0];
161
162 scsi_remove_host(host);
163 NCR_700_release(host);
164 kfree(hostdata);
165 free_irq(host->irq, host);
166 release_region(host->base, 64);
167 return 0;
168}
169
170#ifdef CONFIG_EISA
171static struct eisa_device_id sim710_eisa_ids[] = {
172 { "CPQ4410" },
173 { "CPQ4411" },
174 { "HWP0C80" },
175 { "" }
176};
177MODULE_DEVICE_TABLE(eisa, sim710_eisa_ids);
178
179static __init int
180sim710_eisa_probe(struct device *dev)
181{
182 struct eisa_device *edev = to_eisa_device(dev);
183 unsigned long io_addr = edev->base_addr;
184 char eisa_cpq_irqs[] = { 11, 14, 15, 10, 9, 0 };
185 char eisa_hwp_irqs[] = { 3, 4, 5, 7, 12, 10, 11, 0};
186 char *eisa_irqs;
187 unsigned char irq_index;
188 unsigned char irq, differential = 0, scsi_id = 7;
189
190 if(strcmp(edev->id.sig, "HWP0C80") == 0) {
191 __u8 val;
192 eisa_irqs = eisa_hwp_irqs;
193 irq_index = (inb(io_addr + 0xc85) & 0x7) - 1;
194
195 val = inb(io_addr + 0x4);
196 scsi_id = ffs(val) - 1;
197
198 if(scsi_id > 7 || (val & ~(1<<scsi_id)) != 0) {
199 printk(KERN_ERR "sim710.c, EISA card %s has incorrect scsi_id, setting to 7\n", dev_name(dev));
200 scsi_id = 7;
201 }
202 } else {
203 eisa_irqs = eisa_cpq_irqs;
204 irq_index = inb(io_addr + 0xc88) & 0x07;
205 }
206
207 if(irq_index >= strlen(eisa_irqs)) {
208 printk("sim710.c: irq nasty\n");
209 return -ENODEV;
210 }
211
212 irq = eisa_irqs[irq_index];
213
214 return sim710_probe_common(dev, io_addr, irq, 50,
215 differential, scsi_id);
216}
217
218static struct eisa_driver sim710_eisa_driver = {
219 .id_table = sim710_eisa_ids,
220 .driver = {
221 .name = "sim710",
222 .probe = sim710_eisa_probe,
223 .remove = sim710_device_remove,
224 },
225};
226#endif
227
228static int __init sim710_init(void)
229{
230 int err = -ENODEV;
231
232#ifdef MODULE
233 if (sim710)
234 param_setup(sim710);
235#endif
236
237#ifdef CONFIG_EISA
238 err = eisa_driver_register(&sim710_eisa_driver);
239#endif
240
241
242
243
244
245 return 0;
246}
247
248static void __exit sim710_exit(void)
249{
250#ifdef CONFIG_EISA
251 eisa_driver_unregister(&sim710_eisa_driver);
252#endif
253}
254
255module_init(sim710_init);
256module_exit(sim710_exit);
257
