tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * sim710.c - Copyright (C) 1999 Richard Hirst <richard@sleepie.demon.co.uk>
3 *
4 *----------------------------------------------------------------------------
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18 *----------------------------------------------------------------------------
19 *
20 * MCA card detection code by Trent McNair.
21 * Fixes to not explicitly nul bss data from Xavier Bestel.
22 * Some multiboard fixes from Rolf Eike Beer.
23 * Auto probing of EISA config space from Trevor Hemsley.
24 *
25 * Rewritten to use 53c700.c by James.Bottomley@SteelEye.com
26 *
27 */
28
29#include <linux/module.h>
30
31#include <linux/blkdev.h>
32#include <linux/device.h>
33#include <linux/init.h>
34#include <linux/mca.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/* Must be enough for both EISA and MCA */
46#define MAX_SLOTS 8
47static __u8 __initdata id_array[MAX_SLOTS] = { [0 ... MAX_SLOTS-1] = 7 };
48
49static char *sim710; /* command line passed by insmod */
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 MCA/EISA",
92 .proc_name = "sim710",
93 .this_id = 7,
94 .module = THIS_MODULE,
95};
96
97static __devinit int
98sim710_probe_common(struct device *dev, unsigned long base_addr,
99 int irq, int clock, int differential, int scsi_id)
100{
101 struct Scsi_Host * host = NULL;
102 struct NCR_700_Host_Parameters *hostdata =
103 kmalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL);
104
105 printk(KERN_NOTICE "sim710: %s\n", dev->bus_id);
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 memset(hostdata, 0, sizeof(struct NCR_700_Host_Parameters));
114
115 if(request_region(base_addr, 64, "sim710") == NULL) {
116 printk(KERN_ERR "sim710: Failed to reserve IO region 0x%lx\n",
117 base_addr);
118 goto out_free;
119 }
120
121 /* Fill in the three required pieces of hostdata */
122 hostdata->base = ioport_map(base_addr, 64);
123 hostdata->differential = differential;
124 hostdata->clock = clock;
125 hostdata->chip710 = 1;
126
127 /* and register the chip */
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 scsi_scan_host(host);
142
143 return 0;
144
145 out_put_host:
146 scsi_host_put(host);
147 out_release:
148 release_region(base_addr, 64);
149 out_free:
150 kfree(hostdata);
151 out:
152 return -ENODEV;
153}
154
155static __devexit int
156sim710_device_remove(struct device *dev)
157{
158 struct Scsi_Host *host = dev_to_shost(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_MCA
171
172/* CARD ID 01BB and 01BA use the same pos values */
173#define MCA_01BB_IO_PORTS { 0x0000, 0x0000, 0x0800, 0x0C00, 0x1000, 0x1400, \
174 0x1800, 0x1C00, 0x2000, 0x2400, 0x2800, \
175 0x2C00, 0x3000, 0x3400, 0x3800, 0x3C00, \
176 0x4000, 0x4400, 0x4800, 0x4C00, 0x5000 }
177
178#define MCA_01BB_IRQS { 3, 5, 11, 14 }
179
180/* CARD ID 004f */
181#define MCA_004F_IO_PORTS { 0x0000, 0x0200, 0x0300, 0x0400, 0x0500, 0x0600 }
182#define MCA_004F_IRQS { 5, 9, 14 }
183
184static short sim710_mca_id_table[] = { 0x01bb, 0x01ba, 0x004f, 0};
185
186static __init int
187sim710_mca_probe(struct device *dev)
188{
189 struct mca_device *mca_dev = to_mca_device(dev);
190 int slot = mca_dev->slot;
191 int pos[3];
192 unsigned int base;
193 int irq_vector;
194 short id = sim710_mca_id_table[mca_dev->index];
195 static int io_004f_by_pos[] = MCA_004F_IO_PORTS;
196 static int irq_004f_by_pos[] = MCA_004F_IRQS;
197 static int io_01bb_by_pos[] = MCA_01BB_IO_PORTS;
198 static int irq_01bb_by_pos[] = MCA_01BB_IRQS;
199 char *name;
200 int clock;
201
202 pos[0] = mca_device_read_stored_pos(mca_dev, 2);
203 pos[1] = mca_device_read_stored_pos(mca_dev, 3);
204 pos[2] = mca_device_read_stored_pos(mca_dev, 4);
205
206 /*
207 * 01BB & 01BA port base by bits 7,6,5,4,3,2 in pos[2]
208 *
209 * 000000 <disabled> 001010 0x2800
210 * 000001 <invalid> 001011 0x2C00
211 * 000010 0x0800 001100 0x3000
212 * 000011 0x0C00 001101 0x3400
213 * 000100 0x1000 001110 0x3800
214 * 000101 0x1400 001111 0x3C00
215 * 000110 0x1800 010000 0x4000
216 * 000111 0x1C00 010001 0x4400
217 * 001000 0x2000 010010 0x4800
218 * 001001 0x2400 010011 0x4C00
219 * 010100 0x5000
220 *
221 * 00F4 port base by bits 3,2,1 in pos[0]
222 *
223 * 000 <disabled> 001 0x200
224 * 010 0x300 011 0x400
225 * 100 0x500 101 0x600
226 *
227 * 01BB & 01BA IRQ is specified in pos[0] bits 7 and 6:
228 *
229 * 00 3 10 11
230 * 01 5 11 14
231 *
232 * 00F4 IRQ specified by bits 6,5,4 in pos[0]
233 *
234 * 100 5 101 9
235 * 110 14
236 */
237
238 if (id == 0x01bb || id == 0x01ba) {
239 base = io_01bb_by_pos[(pos[2] & 0xFC) >> 2];
240 irq_vector =
241 irq_01bb_by_pos[((pos[0] & 0xC0) >> 6)];
242
243 clock = 50;
244 if (id == 0x01bb)
245 name = "NCR 3360/3430 SCSI SubSystem";
246 else
247 name = "NCR Dual SIOP SCSI Host Adapter Board";
248 } else if ( id == 0x004f ) {
249 base = io_004f_by_pos[((pos[0] & 0x0E) >> 1)];
250 irq_vector =
251 irq_004f_by_pos[((pos[0] & 0x70) >> 4) - 4];
252 clock = 50;
253 name = "NCR 53c710 SCSI Host Adapter Board";
254 } else {
255 return -ENODEV;
256 }
257 mca_device_set_name(mca_dev, name);
258 mca_device_set_claim(mca_dev, 1);
259 base = mca_device_transform_ioport(mca_dev, base);
260 irq_vector = mca_device_transform_irq(mca_dev, irq_vector);
261
262 return sim710_probe_common(dev, base, irq_vector, clock,
263 0, id_array[slot]);
264}
265
266static struct mca_driver sim710_mca_driver = {
267 .id_table = sim710_mca_id_table,
268 .driver = {
269 .name = "sim710",
270 .bus = &mca_bus_type,
271 .probe = sim710_mca_probe,
272 .remove = __devexit_p(sim710_device_remove),
273 },
274};
275
276#endif /* CONFIG_MCA */
277
278#ifdef CONFIG_EISA
279static struct eisa_device_id sim710_eisa_ids[] = {
280 { "CPQ4410" },
281 { "CPQ4411" },
282 { "HWP0C80" },
283 { "" }
284};
285MODULE_DEVICE_TABLE(eisa, sim710_eisa_ids);
286
287static __init int
288sim710_eisa_probe(struct device *dev)
289{
290 struct eisa_device *edev = to_eisa_device(dev);
291 unsigned long io_addr = edev->base_addr;
292 char eisa_cpq_irqs[] = { 11, 14, 15, 10, 9, 0 };
293 char eisa_hwp_irqs[] = { 3, 4, 5, 7, 12, 10, 11, 0};
294 char *eisa_irqs;
295 unsigned char irq_index;
296 unsigned char irq, differential = 0, scsi_id = 7;
297
298 if(strcmp(edev->id.sig, "HWP0C80") == 0) {
299 __u8 val;
300 eisa_irqs = eisa_hwp_irqs;
301 irq_index = (inb(io_addr + 0xc85) & 0x7) - 1;
302
303 val = inb(io_addr + 0x4);
304 scsi_id = ffs(val) - 1;
305
306 if(scsi_id > 7 || (val & ~(1<<scsi_id)) != 0) {
307 printk(KERN_ERR "sim710.c, EISA card %s has incorrect scsi_id, setting to 7\n", dev->bus_id);
308 scsi_id = 7;
309 }
310 } else {
311 eisa_irqs = eisa_cpq_irqs;
312 irq_index = inb(io_addr + 0xc88) & 0x07;
313 }
314
315 if(irq_index >= strlen(eisa_irqs)) {
316 printk("sim710.c: irq nasty\n");
317 return -ENODEV;
318 }
319
320 irq = eisa_irqs[irq_index];
321
322 return sim710_probe_common(dev, io_addr, irq, 50,
323 differential, scsi_id);
324}
325
326static struct eisa_driver sim710_eisa_driver = {
327 .id_table = sim710_eisa_ids,
328 .driver = {
329 .name = "sim710",
330 .probe = sim710_eisa_probe,
331 .remove = __devexit_p(sim710_device_remove),
332 },
333};
334#endif /* CONFIG_EISA */
335
336static int __init sim710_init(void)
337{
338 int err = -ENODEV;
339
340#ifdef MODULE
341 if (sim710)
342 param_setup(sim710);
343#endif
344
345#ifdef CONFIG_MCA
346 err = mca_register_driver(&sim710_mca_driver);
347#endif
348
349#ifdef CONFIG_EISA
350 err = eisa_driver_register(&sim710_eisa_driver);
351#endif
352 /* FIXME: what we'd really like to return here is -ENODEV if
353 * no devices have actually been found. Instead, the err
354 * above actually only reports problems with kobject_register,
355 * so for the moment return success */
356
357 return 0;
358}
359
360static void __exit sim710_exit(void)
361{
362#ifdef CONFIG_MCA
363 if (MCA_bus)
364 mca_unregister_driver(&sim710_mca_driver);
365#endif
366
367#ifdef CONFIG_EISA
368 eisa_driver_unregister(&sim710_eisa_driver);
369#endif
370}
371
372module_init(sim710_init);
373module_exit(sim710_exit);