aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/scsi/pluto.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/scsi/pluto.c')
-rw-r--r--drivers/scsi/pluto.c349
1 files changed, 0 insertions, 349 deletions
diff --git a/drivers/scsi/pluto.c b/drivers/scsi/pluto.c
deleted file mode 100644
index 0363c1cd68c1..000000000000
--- a/drivers/scsi/pluto.c
+++ /dev/null
@@ -1,349 +0,0 @@
1/* pluto.c: SparcSTORAGE Array SCSI host adapter driver.
2 *
3 * Copyright (C) 1997,1998,1999 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
4 *
5 */
6
7#include <linux/completion.h>
8#include <linux/kernel.h>
9#include <linux/delay.h>
10#include <linux/types.h>
11#include <linux/string.h>
12#include <linux/slab.h>
13#include <linux/blkdev.h>
14#include <linux/proc_fs.h>
15#include <linux/stat.h>
16#include <linux/init.h>
17#ifdef CONFIG_KMOD
18#include <linux/kmod.h>
19#endif
20
21#include <asm/irq.h>
22
23#include "scsi.h"
24#include <scsi/scsi_host.h>
25#include "../fc4/fcp_impl.h"
26#include "pluto.h"
27
28#include <linux/module.h>
29
30#define RQ_SCSI_BUSY 0xffff
31#define RQ_SCSI_DONE 0xfffe
32
33/* #define PLUTO_DEBUG */
34
35#define pluto_printk printk ("PLUTO %s: ", fc->name); printk
36
37#ifdef PLUTO_DEBUG
38#define PLD(x) pluto_printk x;
39#define PLND(x) printk ("PLUTO: "); printk x;
40#else
41#define PLD(x)
42#define PLND(x)
43#endif
44
45static struct ctrl_inquiry {
46 struct Scsi_Host host;
47 struct pluto pluto;
48 Scsi_Cmnd cmd;
49 char inquiry[256];
50 fc_channel *fc;
51} *fcs __initdata;
52static int fcscount __initdata = 0;
53static atomic_t fcss __initdata = ATOMIC_INIT(0);
54static DECLARE_COMPLETION(fc_detect_complete);
55
56static int pluto_encode_addr(Scsi_Cmnd *SCpnt, u16 *addr, fc_channel *fc, fcp_cmnd *fcmd);
57
58static void __init pluto_detect_done(Scsi_Cmnd *SCpnt)
59{
60 /* Do nothing */
61}
62
63static void __init pluto_detect_scsi_done(Scsi_Cmnd *SCpnt)
64{
65 PLND(("Detect done %08lx\n", (long)SCpnt))
66 if (atomic_dec_and_test (&fcss))
67 complete(&fc_detect_complete);
68}
69
70int pluto_slave_configure(struct scsi_device *device)
71{
72 int depth_to_use;
73
74 if (device->tagged_supported)
75 depth_to_use = /* 254 */ 8;
76 else
77 depth_to_use = 2;
78
79 scsi_adjust_queue_depth(device,
80 (device->tagged_supported ?
81 MSG_SIMPLE_TAG : 0),
82 depth_to_use);
83
84 return 0;
85}
86
87/* Detect all SSAs attached to the machine.
88 To be fast, do it on all online FC channels at the same time. */
89int __init pluto_detect(struct scsi_host_template *tpnt)
90{
91 int i, retry, nplutos;
92 fc_channel *fc;
93 struct scsi_device dev;
94
95 tpnt->proc_name = "pluto";
96 fcscount = 0;
97 for_each_online_fc_channel(fc) {
98 if (!fc->posmap)
99 fcscount++;
100 }
101 PLND(("%d channels online\n", fcscount))
102 if (!fcscount) {
103#if defined(MODULE) && defined(CONFIG_FC4_SOC_MODULE) && defined(CONFIG_KMOD)
104 request_module("soc");
105
106 for_each_online_fc_channel(fc) {
107 if (!fc->posmap)
108 fcscount++;
109 }
110 if (!fcscount)
111#endif
112 return 0;
113 }
114 fcs = kcalloc(fcscount, sizeof (struct ctrl_inquiry), GFP_DMA);
115 if (!fcs) {
116 printk ("PLUTO: Not enough memory to probe\n");
117 return 0;
118 }
119
120 memset (&dev, 0, sizeof(dev));
121 atomic_set (&fcss, fcscount);
122
123 i = 0;
124 for_each_online_fc_channel(fc) {
125 Scsi_Cmnd *SCpnt;
126 struct Scsi_Host *host;
127 struct pluto *pluto;
128
129 if (i == fcscount) break;
130 if (fc->posmap) continue;
131
132 PLD(("trying to find SSA\n"))
133
134 /* If this is already registered to some other SCSI host, then it cannot be pluto */
135 if (fc->scsi_name[0]) continue;
136 memcpy (fc->scsi_name, "SSA", 4);
137
138 fcs[i].fc = fc;
139
140 fc->can_queue = PLUTO_CAN_QUEUE;
141 fc->rsp_size = 64;
142 fc->encode_addr = pluto_encode_addr;
143
144 fc->fcp_register(fc, TYPE_SCSI_FCP, 0);
145
146 SCpnt = &(fcs[i].cmd);
147 host = &(fcs[i].host);
148 pluto = (struct pluto *)host->hostdata;
149
150 pluto->fc = fc;
151
152 SCpnt->cmnd[0] = INQUIRY;
153 SCpnt->cmnd[4] = 255;
154
155 /* FC layer requires this, so that SCpnt->device->tagged_supported is initially 0 */
156 SCpnt->device = &dev;
157 dev.host = host;
158
159 SCpnt->cmd_len = COMMAND_SIZE(INQUIRY);
160
161 SCpnt->request->cmd_flags &= ~REQ_STARTED;
162
163 SCpnt->request_bufflen = 256;
164 SCpnt->request_buffer = fcs[i].inquiry;
165 PLD(("set up %d %08lx\n", i, (long)SCpnt))
166 i++;
167 }
168
169 for (retry = 0; retry < 5; retry++) {
170 for (i = 0; i < fcscount; i++) {
171 if (!fcs[i].fc) break;
172 if (!(fcs[i].cmd.request->cmd_flags & REQ_STARTED)) {
173 fcs[i].cmd.request->cmd_flags |= REQ_STARTED;
174 disable_irq(fcs[i].fc->irq);
175 PLND(("queuecommand %d %d\n", retry, i))
176 fcp_scsi_queuecommand (&(fcs[i].cmd),
177 pluto_detect_scsi_done);
178 enable_irq(fcs[i].fc->irq);
179 }
180 }
181
182 wait_for_completion_timeout(&fc_detect_complete, 10 * HZ);
183 PLND(("Woken up\n"))
184 if (!atomic_read(&fcss))
185 break; /* All fc channels have answered us */
186 }
187
188 PLND(("Finished search\n"))
189 for (i = 0, nplutos = 0; i < fcscount; i++) {
190 Scsi_Cmnd *SCpnt;
191
192 if (!(fc = fcs[i].fc)) break;
193
194 SCpnt = &(fcs[i].cmd);
195
196 /* Let FC mid-level free allocated resources */
197 pluto_detect_scsi_done(SCpnt);
198
199 if (!SCpnt->result) {
200 struct pluto_inquiry *inq;
201 struct pluto *pluto;
202 struct Scsi_Host *host;
203
204 inq = (struct pluto_inquiry *)fcs[i].inquiry;
205
206 if ((inq->dtype & 0x1f) == TYPE_PROCESSOR &&
207 !strncmp (inq->vendor_id, "SUN", 3) &&
208 !strncmp (inq->product_id, "SSA", 3)) {
209 char *p;
210 long *ages;
211
212 ages = kcalloc((inq->channels + 1) * inq->targets, sizeof(long), GFP_KERNEL);
213 if (!ages) continue;
214
215 host = scsi_register (tpnt, sizeof (struct pluto));
216 if(!host)
217 {
218 kfree(ages);
219 continue;
220 }
221
222 if (!try_module_get(fc->module)) {
223 kfree(ages);
224 scsi_unregister(host);
225 continue;
226 }
227
228 nplutos++;
229
230 pluto = (struct pluto *)host->hostdata;
231
232 host->max_id = inq->targets;
233 host->max_channel = inq->channels;
234 host->irq = fc->irq;
235
236 fc->channels = inq->channels + 1;
237 fc->targets = inq->targets;
238 fc->ages = ages;
239
240 pluto->fc = fc;
241 memcpy (pluto->rev_str, inq->revision, 4);
242 pluto->rev_str[4] = 0;
243 p = strchr (pluto->rev_str, ' ');
244 if (p) *p = 0;
245 memcpy (pluto->fw_rev_str, inq->fw_revision, 4);
246 pluto->fw_rev_str[4] = 0;
247 p = strchr (pluto->fw_rev_str, ' ');
248 if (p) *p = 0;
249 memcpy (pluto->serial_str, inq->serial, 12);
250 pluto->serial_str[12] = 0;
251 p = strchr (pluto->serial_str, ' ');
252 if (p) *p = 0;
253
254 PLD(("Found SSA rev %s fw rev %s serial %s %dx%d\n", pluto->rev_str, pluto->fw_rev_str, pluto->serial_str, host->max_channel, host->max_id))
255 } else
256 fc->fcp_register(fc, TYPE_SCSI_FCP, 1);
257 } else
258 fc->fcp_register(fc, TYPE_SCSI_FCP, 1);
259 }
260 kfree(fcs);
261 if (nplutos)
262 printk ("PLUTO: Total of %d SparcSTORAGE Arrays found\n", nplutos);
263 return nplutos;
264}
265
266int pluto_release(struct Scsi_Host *host)
267{
268 struct pluto *pluto = (struct pluto *)host->hostdata;
269 fc_channel *fc = pluto->fc;
270
271 module_put(fc->module);
272
273 fc->fcp_register(fc, TYPE_SCSI_FCP, 1);
274 PLND((" releasing pluto.\n"));
275 kfree (fc->ages);
276 PLND(("released pluto!\n"));
277 return 0;
278}
279
280const char *pluto_info(struct Scsi_Host *host)
281{
282 static char buf[128], *p;
283 struct pluto *pluto = (struct pluto *) host->hostdata;
284
285 sprintf(buf, "SUN SparcSTORAGE Array %s fw %s serial %s %dx%d on %s",
286 pluto->rev_str, pluto->fw_rev_str, pluto->serial_str,
287 host->max_channel, host->max_id, pluto->fc->name);
288#ifdef __sparc__
289 p = strchr(buf, 0);
290 sprintf(p, " PROM node %x", pluto->fc->dev->prom_node);
291#endif
292 return buf;
293}
294
295/* SSA uses this FC4S addressing:
296 switch (addr[0])
297 {
298 case 0: CONTROLLER - All of addr[1]..addr[3] has to be 0
299 case 1: SINGLE DISK - addr[1] channel, addr[2] id, addr[3] 0
300 case 2: DISK GROUP - ???
301 }
302
303 So that SCSI mid-layer can access to these, we reserve
304 channel 0 id 0 lun 0 for CONTROLLER
305 and channels 1 .. max_channel are normal single disks.
306 */
307static int pluto_encode_addr(Scsi_Cmnd *SCpnt, u16 *addr, fc_channel *fc, fcp_cmnd *fcmd)
308{
309 PLND(("encode addr %d %d %d\n", SCpnt->device->channel, SCpnt->device->id, SCpnt->cmnd[1] & 0xe0))
310 /* We don't support LUNs - neither does SSA :) */
311 if (SCpnt->cmnd[1] & 0xe0)
312 return -EINVAL;
313 if (!SCpnt->device->channel) {
314 if (SCpnt->device->id)
315 return -EINVAL;
316 memset (addr, 0, 4 * sizeof(u16));
317 } else {
318 addr[0] = 1;
319 addr[1] = SCpnt->device->channel - 1;
320 addr[2] = SCpnt->device->id;
321 addr[3] = 0;
322 }
323 /* We're Point-to-Point, so target it to the default DID */
324 fcmd->did = fc->did;
325 PLND(("trying %04x%04x%04x%04x\n", addr[0], addr[1], addr[2], addr[3]))
326 return 0;
327}
328
329static struct scsi_host_template driver_template = {
330 .name = "Sparc Storage Array 100/200",
331 .detect = pluto_detect,
332 .release = pluto_release,
333 .info = pluto_info,
334 .queuecommand = fcp_scsi_queuecommand,
335 .slave_configure = pluto_slave_configure,
336 .can_queue = PLUTO_CAN_QUEUE,
337 .this_id = -1,
338 .sg_tablesize = 1,
339 .cmd_per_lun = 1,
340 .use_clustering = ENABLE_CLUSTERING,
341 .eh_abort_handler = fcp_scsi_abort,
342 .eh_device_reset_handler = fcp_scsi_dev_reset,
343 .eh_host_reset_handler = fcp_scsi_host_reset,
344};
345
346#include "scsi_module.c"
347
348MODULE_LICENSE("GPL");
349
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-26 07:01:37 -0500