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[SUNLANCE]: Mark sparc_lance_probe_one as __devinit.
[linux-2.6/verdex.git] / drivers / message / i2o / i2o_config.c
blob7d23e082bf26712ef886e401ed89ed2fd56c0f50
1 /*
2 * I2O Configuration Interface Driver
3 *
4 * (C) Copyright 1999-2002 Red Hat
5 *
6 * Written by Alan Cox, Building Number Three Ltd
7 *
8 * Fixes/additions:
9 * Deepak Saxena (04/20/1999):
10 * Added basic ioctl() support
11 * Deepak Saxena (06/07/1999):
12 * Added software download ioctl (still testing)
13 * Auvo Häkkinen (09/10/1999):
14 * Changes to i2o_cfg_reply(), ioctl_parms()
15 * Added ioct_validate()
16 * Taneli Vähäkangas (09/30/1999):
17 * Fixed ioctl_swdl()
18 * Taneli Vähäkangas (10/04/1999):
19 * Changed ioctl_swdl(), implemented ioctl_swul() and ioctl_swdel()
20 * Deepak Saxena (11/18/1999):
21 * Added event managmenet support
22 * Alan Cox <alan@redhat.com>:
23 * 2.4 rewrite ported to 2.5
24 * Markus Lidel <Markus.Lidel@shadowconnect.com>:
25 * Added pass-thru support for Adaptec's raidutils
26 *
27 * This program is free software; you can redistribute it and/or
28 * modify it under the terms of the GNU General Public License
29 * as published by the Free Software Foundation; either version
30 * 2 of the License, or (at your option) any later version.
31 */
32
33 #include <linux/miscdevice.h>
34 #include <linux/smp_lock.h>
35 #include <linux/compat.h>
36
37 #include <asm/uaccess.h>
38
39 #include "core.h"
40
41 #define SG_TABLESIZE 30
42
43 static int i2o_cfg_ioctl(struct inode *, struct file *, unsigned int,
44 unsigned long);
45
46 static spinlock_t i2o_config_lock;
47
48 #define MODINC(x,y) ((x) = ((x) + 1) % (y))
49
50 struct sg_simple_element {
51 u32 flag_count;
52 u32 addr_bus;
53 };
54
55 struct i2o_cfg_info {
56 struct file *fp;
57 struct fasync_struct *fasync;
58 struct i2o_evt_info event_q[I2O_EVT_Q_LEN];
59 u16 q_in; // Queue head index
60 u16 q_out; // Queue tail index
61 u16 q_len; // Queue length
62 u16 q_lost; // Number of lost events
63 ulong q_id; // Event queue ID...used as tx_context
64 struct i2o_cfg_info *next;
65 };
66 static struct i2o_cfg_info *open_files = NULL;
67 static ulong i2o_cfg_info_id = 0;
68
69 static int i2o_cfg_getiops(unsigned long arg)
70 {
71 struct i2o_controller *c;
72 u8 __user *user_iop_table = (void __user *)arg;
73 u8 tmp[MAX_I2O_CONTROLLERS];
74 int ret = 0;
75
76 memset(tmp, 0, MAX_I2O_CONTROLLERS);
77
78 list_for_each_entry(c, &i2o_controllers, list)
79 tmp[c->unit] = 1;
80
81 if (copy_to_user(user_iop_table, tmp, MAX_I2O_CONTROLLERS))
82 ret = -EFAULT;
83
84 return ret;
85 };
86
87 static int i2o_cfg_gethrt(unsigned long arg)
88 {
89 struct i2o_controller *c;
90 struct i2o_cmd_hrtlct __user *cmd = (struct i2o_cmd_hrtlct __user *)arg;
91 struct i2o_cmd_hrtlct kcmd;
92 i2o_hrt *hrt;
93 int len;
94 u32 reslen;
95 int ret = 0;
96
97 if (copy_from_user(&kcmd, cmd, sizeof(struct i2o_cmd_hrtlct)))
98 return -EFAULT;
99
100 if (get_user(reslen, kcmd.reslen) < 0)
101 return -EFAULT;
102
103 if (kcmd.resbuf == NULL)
104 return -EFAULT;
105
106 c = i2o_find_iop(kcmd.iop);
107 if (!c)
108 return -ENXIO;
109
110 hrt = (i2o_hrt *) c->hrt.virt;
111
112 len = 8 + ((hrt->entry_len * hrt->num_entries) << 2);
113
114 /* We did a get user...so assuming mem is ok...is this bad? */
115 put_user(len, kcmd.reslen);
116 if (len > reslen)
117 ret = -ENOBUFS;
118 if (copy_to_user(kcmd.resbuf, (void *)hrt, len))
119 ret = -EFAULT;
120
121 return ret;
122 };
123
124 static int i2o_cfg_getlct(unsigned long arg)
125 {
126 struct i2o_controller *c;
127 struct i2o_cmd_hrtlct __user *cmd = (struct i2o_cmd_hrtlct __user *)arg;
128 struct i2o_cmd_hrtlct kcmd;
129 i2o_lct *lct;
130 int len;
131 int ret = 0;
132 u32 reslen;
133
134 if (copy_from_user(&kcmd, cmd, sizeof(struct i2o_cmd_hrtlct)))
135 return -EFAULT;
136
137 if (get_user(reslen, kcmd.reslen) < 0)
138 return -EFAULT;
139
140 if (kcmd.resbuf == NULL)
141 return -EFAULT;
142
143 c = i2o_find_iop(kcmd.iop);
144 if (!c)
145 return -ENXIO;
146
147 lct = (i2o_lct *) c->lct;
148
149 len = (unsigned int)lct->table_size << 2;
150 put_user(len, kcmd.reslen);
151 if (len > reslen)
152 ret = -ENOBUFS;
153 else if (copy_to_user(kcmd.resbuf, lct, len))
154 ret = -EFAULT;
155
156 return ret;
157 };
158
159 static int i2o_cfg_parms(unsigned long arg, unsigned int type)
160 {
161 int ret = 0;
162 struct i2o_controller *c;
163 struct i2o_device *dev;
164 struct i2o_cmd_psetget __user *cmd =
165 (struct i2o_cmd_psetget __user *)arg;
166 struct i2o_cmd_psetget kcmd;
167 u32 reslen;
168 u8 *ops;
169 u8 *res;
170 int len = 0;
171
172 u32 i2o_cmd = (type == I2OPARMGET ?
173 I2O_CMD_UTIL_PARAMS_GET : I2O_CMD_UTIL_PARAMS_SET);
174
175 if (copy_from_user(&kcmd, cmd, sizeof(struct i2o_cmd_psetget)))
176 return -EFAULT;
177
178 if (get_user(reslen, kcmd.reslen))
179 return -EFAULT;
180
181 c = i2o_find_iop(kcmd.iop);
182 if (!c)
183 return -ENXIO;
184
185 dev = i2o_iop_find_device(c, kcmd.tid);
186 if (!dev)
187 return -ENXIO;
188
189 ops = (u8 *) kmalloc(kcmd.oplen, GFP_KERNEL);
190 if (!ops)
191 return -ENOMEM;
192
193 if (copy_from_user(ops, kcmd.opbuf, kcmd.oplen)) {
194 kfree(ops);
195 return -EFAULT;
196 }
197
198 /*
199 * It's possible to have a _very_ large table
200 * and that the user asks for all of it at once...
201 */
202 res = (u8 *) kmalloc(65536, GFP_KERNEL);
203 if (!res) {
204 kfree(ops);
205 return -ENOMEM;
206 }
207
208 len = i2o_parm_issue(dev, i2o_cmd, ops, kcmd.oplen, res, 65536);
209 kfree(ops);
210
211 if (len < 0) {
212 kfree(res);
213 return -EAGAIN;
214 }
215
216 put_user(len, kcmd.reslen);
217 if (len > reslen)
218 ret = -ENOBUFS;
219 else if (copy_to_user(kcmd.resbuf, res, len))
220 ret = -EFAULT;
221
222 kfree(res);
223
224 return ret;
225 };
226
227 static int i2o_cfg_swdl(unsigned long arg)
228 {
229 struct i2o_sw_xfer kxfer;
230 struct i2o_sw_xfer __user *pxfer = (struct i2o_sw_xfer __user *)arg;
231 unsigned char maxfrag = 0, curfrag = 1;
232 struct i2o_dma buffer;
233 struct i2o_message *msg;
234 unsigned int status = 0, swlen = 0, fragsize = 8192;
235 struct i2o_controller *c;
236
237 if (copy_from_user(&kxfer, pxfer, sizeof(struct i2o_sw_xfer)))
238 return -EFAULT;
239
240 if (get_user(swlen, kxfer.swlen) < 0)
241 return -EFAULT;
242
243 if (get_user(maxfrag, kxfer.maxfrag) < 0)
244 return -EFAULT;
245
246 if (get_user(curfrag, kxfer.curfrag) < 0)
247 return -EFAULT;
248
249 if (curfrag == maxfrag)
250 fragsize = swlen - (maxfrag - 1) * 8192;
251
252 if (!kxfer.buf || !access_ok(VERIFY_READ, kxfer.buf, fragsize))
253 return -EFAULT;
254
255 c = i2o_find_iop(kxfer.iop);
256 if (!c)
257 return -ENXIO;
258
259 msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
260 if (IS_ERR(msg))
261 return PTR_ERR(msg);
262
263 if (i2o_dma_alloc(&c->pdev->dev, &buffer, fragsize, GFP_KERNEL)) {
264 i2o_msg_nop(c, msg);
265 return -ENOMEM;
266 }
267
268 __copy_from_user(buffer.virt, kxfer.buf, fragsize);
269
270 msg->u.head[0] = cpu_to_le32(NINE_WORD_MSG_SIZE | SGL_OFFSET_7);
271 msg->u.head[1] =
272 cpu_to_le32(I2O_CMD_SW_DOWNLOAD << 24 | HOST_TID << 12 |
273 ADAPTER_TID);
274 msg->u.head[2] = cpu_to_le32(i2o_config_driver.context);
275 msg->u.head[3] = cpu_to_le32(0);
276 msg->body[0] =
277 cpu_to_le32((((u32) kxfer.flags) << 24) | (((u32) kxfer.
278 sw_type) << 16) |
279 (((u32) maxfrag) << 8) | (((u32) curfrag)));
280 msg->body[1] = cpu_to_le32(swlen);
281 msg->body[2] = cpu_to_le32(kxfer.sw_id);
282 msg->body[3] = cpu_to_le32(0xD0000000 | fragsize);
283 msg->body[4] = cpu_to_le32(buffer.phys);
284
285 osm_debug("swdl frag %d/%d (size %d)\n", curfrag, maxfrag, fragsize);
286 status = i2o_msg_post_wait_mem(c, msg, 60, &buffer);
287
288 if (status != -ETIMEDOUT)
289 i2o_dma_free(&c->pdev->dev, &buffer);
290
291 if (status != I2O_POST_WAIT_OK) {
292 // it fails if you try and send frags out of order
293 // and for some yet unknown reasons too
294 osm_info("swdl failed, DetailedStatus = %d\n", status);
295 return status;
296 }
297
298 return 0;
299 };
300
301 static int i2o_cfg_swul(unsigned long arg)
302 {
303 struct i2o_sw_xfer kxfer;
304 struct i2o_sw_xfer __user *pxfer = (struct i2o_sw_xfer __user *)arg;
305 unsigned char maxfrag = 0, curfrag = 1;
306 struct i2o_dma buffer;
307 struct i2o_message *msg;
308 unsigned int status = 0, swlen = 0, fragsize = 8192;
309 struct i2o_controller *c;
310 int ret = 0;
311
312 if (copy_from_user(&kxfer, pxfer, sizeof(struct i2o_sw_xfer)))
313 goto return_fault;
314
315 if (get_user(swlen, kxfer.swlen) < 0)
316 goto return_fault;
317
318 if (get_user(maxfrag, kxfer.maxfrag) < 0)
319 goto return_fault;
320
321 if (get_user(curfrag, kxfer.curfrag) < 0)
322 goto return_fault;
323
324 if (curfrag == maxfrag)
325 fragsize = swlen - (maxfrag - 1) * 8192;
326
327 if (!kxfer.buf)
328 goto return_fault;
329
330 c = i2o_find_iop(kxfer.iop);
331 if (!c)
332 return -ENXIO;
333
334 msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
335 if (IS_ERR(msg))
336 return PTR_ERR(msg);
337
338 if (i2o_dma_alloc(&c->pdev->dev, &buffer, fragsize, GFP_KERNEL)) {
339 i2o_msg_nop(c, msg);
340 return -ENOMEM;
341 }
342
343 msg->u.head[0] = cpu_to_le32(NINE_WORD_MSG_SIZE | SGL_OFFSET_7);
344 msg->u.head[1] =
345 cpu_to_le32(I2O_CMD_SW_UPLOAD << 24 | HOST_TID << 12 | ADAPTER_TID);
346 msg->u.head[2] = cpu_to_le32(i2o_config_driver.context);
347 msg->u.head[3] = cpu_to_le32(0);
348 msg->body[0] =
349 cpu_to_le32((u32) kxfer.flags << 24 | (u32) kxfer.
350 sw_type << 16 | (u32) maxfrag << 8 | (u32) curfrag);
351 msg->body[1] = cpu_to_le32(swlen);
352 msg->body[2] = cpu_to_le32(kxfer.sw_id);
353 msg->body[3] = cpu_to_le32(0xD0000000 | fragsize);
354 msg->body[4] = cpu_to_le32(buffer.phys);
355
356 osm_debug("swul frag %d/%d (size %d)\n", curfrag, maxfrag, fragsize);
357 status = i2o_msg_post_wait_mem(c, msg, 60, &buffer);
358
359 if (status != I2O_POST_WAIT_OK) {
360 if (status != -ETIMEDOUT)
361 i2o_dma_free(&c->pdev->dev, &buffer);
362
363 osm_info("swul failed, DetailedStatus = %d\n", status);
364 return status;
365 }
366
367 if (copy_to_user(kxfer.buf, buffer.virt, fragsize))
368 ret = -EFAULT;
369
370 i2o_dma_free(&c->pdev->dev, &buffer);
371
372 return_ret:
373 return ret;
374 return_fault:
375 ret = -EFAULT;
376 goto return_ret;
377 };
378
379 static int i2o_cfg_swdel(unsigned long arg)
380 {
381 struct i2o_controller *c;
382 struct i2o_sw_xfer kxfer;
383 struct i2o_sw_xfer __user *pxfer = (struct i2o_sw_xfer __user *)arg;
384 struct i2o_message *msg;
385 unsigned int swlen;
386 int token;
387
388 if (copy_from_user(&kxfer, pxfer, sizeof(struct i2o_sw_xfer)))
389 return -EFAULT;
390
391 if (get_user(swlen, kxfer.swlen) < 0)
392 return -EFAULT;
393
394 c = i2o_find_iop(kxfer.iop);
395 if (!c)
396 return -ENXIO;
397
398 msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
399 if (IS_ERR(msg))
400 return PTR_ERR(msg);
401
402 msg->u.head[0] = cpu_to_le32(SEVEN_WORD_MSG_SIZE | SGL_OFFSET_0);
403 msg->u.head[1] =
404 cpu_to_le32(I2O_CMD_SW_REMOVE << 24 | HOST_TID << 12 | ADAPTER_TID);
405 msg->u.head[2] = cpu_to_le32(i2o_config_driver.context);
406 msg->u.head[3] = cpu_to_le32(0);
407 msg->body[0] =
408 cpu_to_le32((u32) kxfer.flags << 24 | (u32) kxfer.sw_type << 16);
409 msg->body[1] = cpu_to_le32(swlen);
410 msg->body[2] = cpu_to_le32(kxfer.sw_id);
411
412 token = i2o_msg_post_wait(c, msg, 10);
413
414 if (token != I2O_POST_WAIT_OK) {
415 osm_info("swdel failed, DetailedStatus = %d\n", token);
416 return -ETIMEDOUT;
417 }
418
419 return 0;
420 };
421
422 static int i2o_cfg_validate(unsigned long arg)
423 {
424 int token;
425 int iop = (int)arg;
426 struct i2o_message *msg;
427 struct i2o_controller *c;
428
429 c = i2o_find_iop(iop);
430 if (!c)
431 return -ENXIO;
432
433 msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
434 if (IS_ERR(msg))
435 return PTR_ERR(msg);
436
437 msg->u.head[0] = cpu_to_le32(FOUR_WORD_MSG_SIZE | SGL_OFFSET_0);
438 msg->u.head[1] =
439 cpu_to_le32(I2O_CMD_CONFIG_VALIDATE << 24 | HOST_TID << 12 | iop);
440 msg->u.head[2] = cpu_to_le32(i2o_config_driver.context);
441 msg->u.head[3] = cpu_to_le32(0);
442
443 token = i2o_msg_post_wait(c, msg, 10);
444
445 if (token != I2O_POST_WAIT_OK) {
446 osm_info("Can't validate configuration, ErrorStatus = %d\n",
447 token);
448 return -ETIMEDOUT;
449 }
450
451 return 0;
452 };
453
454 static int i2o_cfg_evt_reg(unsigned long arg, struct file *fp)
455 {
456 struct i2o_message *msg;
457 struct i2o_evt_id __user *pdesc = (struct i2o_evt_id __user *)arg;
458 struct i2o_evt_id kdesc;
459 struct i2o_controller *c;
460 struct i2o_device *d;
461
462 if (copy_from_user(&kdesc, pdesc, sizeof(struct i2o_evt_id)))
463 return -EFAULT;
464
465 /* IOP exists? */
466 c = i2o_find_iop(kdesc.iop);
467 if (!c)
468 return -ENXIO;
469
470 /* Device exists? */
471 d = i2o_iop_find_device(c, kdesc.tid);
472 if (!d)
473 return -ENODEV;
474
475 msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
476 if (IS_ERR(msg))
477 return PTR_ERR(msg);
478
479 msg->u.head[0] = cpu_to_le32(FOUR_WORD_MSG_SIZE | SGL_OFFSET_0);
480 msg->u.head[1] =
481 cpu_to_le32(I2O_CMD_UTIL_EVT_REGISTER << 24 | HOST_TID << 12 |
482 kdesc.tid);
483 msg->u.head[2] = cpu_to_le32(i2o_config_driver.context);
484 msg->u.head[3] = cpu_to_le32(i2o_cntxt_list_add(c, fp->private_data));
485 msg->body[0] = cpu_to_le32(kdesc.evt_mask);
486
487 i2o_msg_post(c, msg);
488
489 return 0;
490 }
491
492 static int i2o_cfg_evt_get(unsigned long arg, struct file *fp)
493 {
494 struct i2o_cfg_info *p = NULL;
495 struct i2o_evt_get __user *uget = (struct i2o_evt_get __user *)arg;
496 struct i2o_evt_get kget;
497 unsigned long flags;
498
499 for (p = open_files; p; p = p->next)
500 if (p->q_id == (ulong) fp->private_data)
501 break;
502
503 if (!p->q_len)
504 return -ENOENT;
505
506 memcpy(&kget.info, &p->event_q[p->q_out], sizeof(struct i2o_evt_info));
507 MODINC(p->q_out, I2O_EVT_Q_LEN);
508 spin_lock_irqsave(&i2o_config_lock, flags);
509 p->q_len--;
510 kget.pending = p->q_len;
511 kget.lost = p->q_lost;
512 spin_unlock_irqrestore(&i2o_config_lock, flags);
513
514 if (copy_to_user(uget, &kget, sizeof(struct i2o_evt_get)))
515 return -EFAULT;
516 return 0;
517 }
518
519 #ifdef CONFIG_I2O_EXT_ADAPTEC
520 #ifdef CONFIG_COMPAT
521 static int i2o_cfg_passthru32(struct file *file, unsigned cmnd,
522 unsigned long arg)
523 {
524 struct i2o_cmd_passthru32 __user *cmd;
525 struct i2o_controller *c;
526 u32 __user *user_msg;
527 u32 *reply = NULL;
528 u32 __user *user_reply = NULL;
529 u32 size = 0;
530 u32 reply_size = 0;
531 u32 rcode = 0;
532 struct i2o_dma sg_list[SG_TABLESIZE];
533 u32 sg_offset = 0;
534 u32 sg_count = 0;
535 u32 i = 0;
536 u32 sg_index = 0;
537 i2o_status_block *sb;
538 struct i2o_message *msg;
539 unsigned int iop;
540
541 cmd = (struct i2o_cmd_passthru32 __user *)arg;
542
543 if (get_user(iop, &cmd->iop) || get_user(i, &cmd->msg))
544 return -EFAULT;
545
546 user_msg = compat_ptr(i);
547
548 c = i2o_find_iop(iop);
549 if (!c) {
550 osm_debug("controller %d not found\n", iop);
551 return -ENXIO;
552 }
553
554 msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
555
556 sb = c->status_block.virt;
557
558 if (get_user(size, &user_msg[0])) {
559 osm_warn("unable to get size!\n");
560 return -EFAULT;
561 }
562 size = size >> 16;
563
564 if (size > sb->inbound_frame_size) {
565 osm_warn("size of message > inbound_frame_size");
566 return -EFAULT;
567 }
568
569 user_reply = &user_msg[size];
570
571 size <<= 2; // Convert to bytes
572
573 /* Copy in the user's I2O command */
574 if (copy_from_user(msg, user_msg, size)) {
575 osm_warn("unable to copy user message\n");
576 return -EFAULT;
577 }
578 i2o_dump_message(msg);
579
580 if (get_user(reply_size, &user_reply[0]) < 0)
581 return -EFAULT;
582
583 reply_size >>= 16;
584 reply_size <<= 2;
585
586 reply = kzalloc(reply_size, GFP_KERNEL);
587 if (!reply) {
588 printk(KERN_WARNING "%s: Could not allocate reply buffer\n",
589 c->name);
590 return -ENOMEM;
591 }
592
593 sg_offset = (msg->u.head[0] >> 4) & 0x0f;
594
595 memset(sg_list, 0, sizeof(sg_list[0]) * SG_TABLESIZE);
596 if (sg_offset) {
597 struct sg_simple_element *sg;
598
599 if (sg_offset * 4 >= size) {
600 rcode = -EFAULT;
601 goto cleanup;
602 }
603 // TODO 64bit fix
604 sg = (struct sg_simple_element *)((&msg->u.head[0]) +
605 sg_offset);
606 sg_count =
607 (size - sg_offset * 4) / sizeof(struct sg_simple_element);
608 if (sg_count > SG_TABLESIZE) {
609 printk(KERN_DEBUG "%s:IOCTL SG List too large (%u)\n",
610 c->name, sg_count);
611 rcode = -EINVAL;
612 goto cleanup;
613 }
614
615 for (i = 0; i < sg_count; i++) {
616 int sg_size;
617 struct i2o_dma *p;
618
619 if (!(sg[i].flag_count & 0x10000000
620 /*I2O_SGL_FLAGS_SIMPLE_ADDRESS_ELEMENT */ )) {
621 printk(KERN_DEBUG
622 "%s:Bad SG element %d - not simple (%x)\n",
623 c->name, i, sg[i].flag_count);
624 rcode = -EINVAL;
625 goto cleanup;
626 }
627 sg_size = sg[i].flag_count & 0xffffff;
628 p = &(sg_list[sg_index]);
629 /* Allocate memory for the transfer */
630 if (i2o_dma_alloc
631 (&c->pdev->dev, p, sg_size,
632 PCI_DMA_BIDIRECTIONAL)) {
633 printk(KERN_DEBUG
634 "%s: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
635 c->name, sg_size, i, sg_count);
636 rcode = -ENOMEM;
637 goto sg_list_cleanup;
638 }
639 sg_index++;
640 /* Copy in the user's SG buffer if necessary */
641 if (sg[i].
642 flag_count & 0x04000000 /*I2O_SGL_FLAGS_DIR */ ) {
643 // TODO 64bit fix
644 if (copy_from_user
645 (p->virt,
646 (void __user *)(unsigned long)sg[i].
647 addr_bus, sg_size)) {
648 printk(KERN_DEBUG
649 "%s: Could not copy SG buf %d FROM user\n",
650 c->name, i);
651 rcode = -EFAULT;
652 goto sg_list_cleanup;
653 }
654 }
655 //TODO 64bit fix
656 sg[i].addr_bus = (u32) p->phys;
657 }
658 }
659
660 rcode = i2o_msg_post_wait(c, msg, 60);
661 if (rcode) {
662 reply[4] = ((u32) rcode) << 24;
663 goto sg_list_cleanup;
664 }
665
666 if (sg_offset) {
667 u32 msg[I2O_OUTBOUND_MSG_FRAME_SIZE];
668 /* Copy back the Scatter Gather buffers back to user space */
669 u32 j;
670 // TODO 64bit fix
671 struct sg_simple_element *sg;
672 int sg_size;
673
674 // re-acquire the original message to handle correctly the sg copy operation
675 memset(&msg, 0, I2O_OUTBOUND_MSG_FRAME_SIZE * 4);
676 // get user msg size in u32s
677 if (get_user(size, &user_msg[0])) {
678 rcode = -EFAULT;
679 goto sg_list_cleanup;
680 }
681 size = size >> 16;
682 size *= 4;
683 /* Copy in the user's I2O command */
684 if (copy_from_user(msg, user_msg, size)) {
685 rcode = -EFAULT;
686 goto sg_list_cleanup;
687 }
688 sg_count =
689 (size - sg_offset * 4) / sizeof(struct sg_simple_element);
690
691 // TODO 64bit fix
692 sg = (struct sg_simple_element *)(msg + sg_offset);
693 for (j = 0; j < sg_count; j++) {
694 /* Copy out the SG list to user's buffer if necessary */
695 if (!
696 (sg[j].
697 flag_count & 0x4000000 /*I2O_SGL_FLAGS_DIR */ )) {
698 sg_size = sg[j].flag_count & 0xffffff;
699 // TODO 64bit fix
700 if (copy_to_user
701 ((void __user *)(u64) sg[j].addr_bus,
702 sg_list[j].virt, sg_size)) {
703 printk(KERN_WARNING
704 "%s: Could not copy %p TO user %x\n",
705 c->name, sg_list[j].virt,
706 sg[j].addr_bus);
707 rcode = -EFAULT;
708 goto sg_list_cleanup;
709 }
710 }
711 }
712 }
713
714 sg_list_cleanup:
715 /* Copy back the reply to user space */
716 if (reply_size) {
717 // we wrote our own values for context - now restore the user supplied ones
718 if (copy_from_user(reply + 2, user_msg + 2, sizeof(u32) * 2)) {
719 printk(KERN_WARNING
720 "%s: Could not copy message context FROM user\n",
721 c->name);
722 rcode = -EFAULT;
723 goto sg_list_cleanup;
724 }
725 if (copy_to_user(user_reply, reply, reply_size)) {
726 printk(KERN_WARNING
727 "%s: Could not copy reply TO user\n", c->name);
728 rcode = -EFAULT;
729 }
730 }
731
732 for (i = 0; i < sg_index; i++)
733 i2o_dma_free(&c->pdev->dev, &sg_list[i]);
734
735 cleanup:
736 kfree(reply);
737 return rcode;
738 }
739
740 static long i2o_cfg_compat_ioctl(struct file *file, unsigned cmd,
741 unsigned long arg)
742 {
743 int ret;
744 lock_kernel();
745 switch (cmd) {
746 case I2OGETIOPS:
747 ret = i2o_cfg_ioctl(NULL, file, cmd, arg);
748 break;
749 case I2OPASSTHRU32:
750 ret = i2o_cfg_passthru32(file, cmd, arg);
751 break;
752 default:
753 ret = -ENOIOCTLCMD;
754 break;
755 }
756 unlock_kernel();
757 return ret;
758 }
759
760 #endif
761
762 static int i2o_cfg_passthru(unsigned long arg)
763 {
764 struct i2o_cmd_passthru __user *cmd =
765 (struct i2o_cmd_passthru __user *)arg;
766 struct i2o_controller *c;
767 u32 __user *user_msg;
768 u32 *reply = NULL;
769 u32 __user *user_reply = NULL;
770 u32 size = 0;
771 u32 reply_size = 0;
772 u32 rcode = 0;
773 void *sg_list[SG_TABLESIZE];
774 u32 sg_offset = 0;
775 u32 sg_count = 0;
776 int sg_index = 0;
777 u32 i = 0;
778 void *p = NULL;
779 i2o_status_block *sb;
780 struct i2o_message *msg;
781 unsigned int iop;
782
783 if (get_user(iop, &cmd->iop) || get_user(user_msg, &cmd->msg))
784 return -EFAULT;
785
786 c = i2o_find_iop(iop);
787 if (!c) {
788 osm_warn("controller %d not found\n", iop);
789 return -ENXIO;
790 }
791
792 msg = i2o_msg_get_wait(c, I2O_TIMEOUT_MESSAGE_GET);
793
794 sb = c->status_block.virt;
795
796 if (get_user(size, &user_msg[0]))
797 return -EFAULT;
798 size = size >> 16;
799
800 if (size > sb->inbound_frame_size) {
801 osm_warn("size of message > inbound_frame_size");
802 return -EFAULT;
803 }
804
805 user_reply = &user_msg[size];
806
807 size <<= 2; // Convert to bytes
808
809 /* Copy in the user's I2O command */
810 if (copy_from_user(msg, user_msg, size))
811 return -EFAULT;
812
813 if (get_user(reply_size, &user_reply[0]) < 0)
814 return -EFAULT;
815
816 reply_size >>= 16;
817 reply_size <<= 2;
818
819 reply = kzalloc(reply_size, GFP_KERNEL);
820 if (!reply) {
821 printk(KERN_WARNING "%s: Could not allocate reply buffer\n",
822 c->name);
823 return -ENOMEM;
824 }
825
826 sg_offset = (msg->u.head[0] >> 4) & 0x0f;
827
828 memset(sg_list, 0, sizeof(sg_list[0]) * SG_TABLESIZE);
829 if (sg_offset) {
830 struct sg_simple_element *sg;
831
832 if (sg_offset * 4 >= size) {
833 rcode = -EFAULT;
834 goto cleanup;
835 }
836 // TODO 64bit fix
837 sg = (struct sg_simple_element *)((&msg->u.head[0]) +
838 sg_offset);
839 sg_count =
840 (size - sg_offset * 4) / sizeof(struct sg_simple_element);
841 if (sg_count > SG_TABLESIZE) {
842 printk(KERN_DEBUG "%s:IOCTL SG List too large (%u)\n",
843 c->name, sg_count);
844 rcode = -EINVAL;
845 goto cleanup;
846 }
847
848 for (i = 0; i < sg_count; i++) {
849 int sg_size;
850
851 if (!(sg[i].flag_count & 0x10000000
852 /*I2O_SGL_FLAGS_SIMPLE_ADDRESS_ELEMENT */ )) {
853 printk(KERN_DEBUG
854 "%s:Bad SG element %d - not simple (%x)\n",
855 c->name, i, sg[i].flag_count);
856 rcode = -EINVAL;
857 goto sg_list_cleanup;
858 }
859 sg_size = sg[i].flag_count & 0xffffff;
860 /* Allocate memory for the transfer */
861 p = kmalloc(sg_size, GFP_KERNEL);
862 if (!p) {
863 printk(KERN_DEBUG
864 "%s: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
865 c->name, sg_size, i, sg_count);
866 rcode = -ENOMEM;
867 goto sg_list_cleanup;
868 }
869 sg_list[sg_index++] = p; // sglist indexed with input frame, not our internal frame.
870 /* Copy in the user's SG buffer if necessary */
871 if (sg[i].
872 flag_count & 0x04000000 /*I2O_SGL_FLAGS_DIR */ ) {
873 // TODO 64bit fix
874 if (copy_from_user
875 (p, (void __user *)sg[i].addr_bus,
876 sg_size)) {
877 printk(KERN_DEBUG
878 "%s: Could not copy SG buf %d FROM user\n",
879 c->name, i);
880 rcode = -EFAULT;
881 goto sg_list_cleanup;
882 }
883 }
884 //TODO 64bit fix
885 sg[i].addr_bus = virt_to_bus(p);
886 }
887 }
888
889 rcode = i2o_msg_post_wait(c, msg, 60);
890 if (rcode) {
891 reply[4] = ((u32) rcode) << 24;
892 goto sg_list_cleanup;
893 }
894
895 if (sg_offset) {
896 u32 msg[128];
897 /* Copy back the Scatter Gather buffers back to user space */
898 u32 j;
899 // TODO 64bit fix
900 struct sg_simple_element *sg;
901 int sg_size;
902
903 // re-acquire the original message to handle correctly the sg copy operation
904 memset(&msg, 0, I2O_OUTBOUND_MSG_FRAME_SIZE * 4);
905 // get user msg size in u32s
906 if (get_user(size, &user_msg[0])) {
907 rcode = -EFAULT;
908 goto sg_list_cleanup;
909 }
910 size = size >> 16;
911 size *= 4;
912 /* Copy in the user's I2O command */
913 if (copy_from_user(msg, user_msg, size)) {
914 rcode = -EFAULT;
915 goto sg_list_cleanup;
916 }
917 sg_count =
918 (size - sg_offset * 4) / sizeof(struct sg_simple_element);
919
920 // TODO 64bit fix
921 sg = (struct sg_simple_element *)(msg + sg_offset);
922 for (j = 0; j < sg_count; j++) {
923 /* Copy out the SG list to user's buffer if necessary */
924 if (!
925 (sg[j].
926 flag_count & 0x4000000 /*I2O_SGL_FLAGS_DIR */ )) {
927 sg_size = sg[j].flag_count & 0xffffff;
928 // TODO 64bit fix
929 if (copy_to_user
930 ((void __user *)sg[j].addr_bus, sg_list[j],
931 sg_size)) {
932 printk(KERN_WARNING
933 "%s: Could not copy %p TO user %x\n",
934 c->name, sg_list[j],
935 sg[j].addr_bus);
936 rcode = -EFAULT;
937 goto sg_list_cleanup;
938 }
939 }
940 }
941 }
942
943 sg_list_cleanup:
944 /* Copy back the reply to user space */
945 if (reply_size) {
946 // we wrote our own values for context - now restore the user supplied ones
947 if (copy_from_user(reply + 2, user_msg + 2, sizeof(u32) * 2)) {
948 printk(KERN_WARNING
949 "%s: Could not copy message context FROM user\n",
950 c->name);
951 rcode = -EFAULT;
952 }
953 if (copy_to_user(user_reply, reply, reply_size)) {
954 printk(KERN_WARNING
955 "%s: Could not copy reply TO user\n", c->name);
956 rcode = -EFAULT;
957 }
958 }
959
960 for (i = 0; i < sg_index; i++)
961 kfree(sg_list[i]);
962
963 cleanup:
964 kfree(reply);
965 return rcode;
966 }
967 #endif
968
969 /*
970 * IOCTL Handler
971 */
972 static int i2o_cfg_ioctl(struct inode *inode, struct file *fp, unsigned int cmd,
973 unsigned long arg)
974 {
975 int ret;
976
977 switch (cmd) {
978 case I2OGETIOPS:
979 ret = i2o_cfg_getiops(arg);
980 break;
981
982 case I2OHRTGET:
983 ret = i2o_cfg_gethrt(arg);
984 break;
985
986 case I2OLCTGET:
987 ret = i2o_cfg_getlct(arg);
988 break;
989
990 case I2OPARMSET:
991 ret = i2o_cfg_parms(arg, I2OPARMSET);
992 break;
993
994 case I2OPARMGET:
995 ret = i2o_cfg_parms(arg, I2OPARMGET);
996 break;
997
998 case I2OSWDL:
999 ret = i2o_cfg_swdl(arg);
1000 break;
1001
1002 case I2OSWUL:
1003 ret = i2o_cfg_swul(arg);
1004 break;
1005
1006 case I2OSWDEL:
1007 ret = i2o_cfg_swdel(arg);
1008 break;
1009
1010 case I2OVALIDATE:
1011 ret = i2o_cfg_validate(arg);
1012 break;
1013
1014 case I2OEVTREG:
1015 ret = i2o_cfg_evt_reg(arg, fp);
1016 break;
1017
1018 case I2OEVTGET:
1019 ret = i2o_cfg_evt_get(arg, fp);
1020 break;
1021
1022 #ifdef CONFIG_I2O_EXT_ADAPTEC
1023 case I2OPASSTHRU:
1024 ret = i2o_cfg_passthru(arg);
1025 break;
1026 #endif
1027
1028 default:
1029 osm_debug("unknown ioctl called!\n");
1030 ret = -EINVAL;
1031 }
1032
1033 return ret;
1034 }
1035
1036 static int cfg_open(struct inode *inode, struct file *file)
1037 {
1038 struct i2o_cfg_info *tmp =
1039 (struct i2o_cfg_info *)kmalloc(sizeof(struct i2o_cfg_info),
1040 GFP_KERNEL);
1041 unsigned long flags;
1042
1043 if (!tmp)
1044 return -ENOMEM;
1045
1046 file->private_data = (void *)(i2o_cfg_info_id++);
1047 tmp->fp = file;
1048 tmp->fasync = NULL;
1049 tmp->q_id = (ulong) file->private_data;
1050 tmp->q_len = 0;
1051 tmp->q_in = 0;
1052 tmp->q_out = 0;
1053 tmp->q_lost = 0;
1054 tmp->next = open_files;
1055
1056 spin_lock_irqsave(&i2o_config_lock, flags);
1057 open_files = tmp;
1058 spin_unlock_irqrestore(&i2o_config_lock, flags);
1059
1060 return 0;
1061 }
1062
1063 static int cfg_fasync(int fd, struct file *fp, int on)
1064 {
1065 ulong id = (ulong) fp->private_data;
1066 struct i2o_cfg_info *p;
1067
1068 for (p = open_files; p; p = p->next)
1069 if (p->q_id == id)
1070 break;
1071
1072 if (!p)
1073 return -EBADF;
1074
1075 return fasync_helper(fd, fp, on, &p->fasync);
1076 }
1077
1078 static int cfg_release(struct inode *inode, struct file *file)
1079 {
1080 ulong id = (ulong) file->private_data;
1081 struct i2o_cfg_info *p1, *p2;
1082 unsigned long flags;
1083
1084 lock_kernel();
1085 p1 = p2 = NULL;
1086
1087 spin_lock_irqsave(&i2o_config_lock, flags);
1088 for (p1 = open_files; p1;) {
1089 if (p1->q_id == id) {
1090
1091 if (p1->fasync)
1092 cfg_fasync(-1, file, 0);
1093 if (p2)
1094 p2->next = p1->next;
1095 else
1096 open_files = p1->next;
1097
1098 kfree(p1);
1099 break;
1100 }
1101 p2 = p1;
1102 p1 = p1->next;
1103 }
1104 spin_unlock_irqrestore(&i2o_config_lock, flags);
1105 unlock_kernel();
1106
1107 return 0;
1108 }
1109
1110 static struct file_operations config_fops = {
1111 .owner = THIS_MODULE,
1112 .llseek = no_llseek,
1113 .ioctl = i2o_cfg_ioctl,
1114 #ifdef CONFIG_COMPAT
1115 .compat_ioctl = i2o_cfg_compat_ioctl,
1116 #endif
1117 .open = cfg_open,
1118 .release = cfg_release,
1119 .fasync = cfg_fasync,
1120 };
1121
1122 static struct miscdevice i2o_miscdev = {
1123 I2O_MINOR,
1124 "i2octl",
1125 &config_fops
1126 };
1127
1128 static int __init i2o_config_old_init(void)
1129 {
1130 spin_lock_init(&i2o_config_lock);
1131
1132 if (misc_register(&i2o_miscdev) < 0) {
1133 osm_err("can't register device.\n");
1134 return -EBUSY;
1135 }
1136
1137 return 0;
1138 }
1139
1140 static void i2o_config_old_exit(void)
1141 {
1142 misc_deregister(&i2o_miscdev);
1143 }
1144
1145 MODULE_AUTHOR("Red Hat Software");
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