2 * I2O Configuration Interface Driver
4 * (C) Copyright 1999-2002 Red Hat
6 * Written by Alan Cox, Building Number Three Ltd
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):
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
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.
33 #include <linux/miscdevice.h>
34 #include <linux/smp_lock.h>
35 #include <linux/compat.h>
37 #include <asm/uaccess.h>
41 #define SG_TABLESIZE 30
43 static int i2o_cfg_ioctl(struct inode
*, struct file
*, unsigned int,
46 static spinlock_t i2o_config_lock
;
48 #define MODINC(x,y) ((x) = ((x) + 1) % (y))
50 struct sg_simple_element
{
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
;
66 static struct i2o_cfg_info
*open_files
= NULL
;
67 static ulong i2o_cfg_info_id
= 0;
69 static int i2o_cfg_getiops(unsigned long arg
)
71 struct i2o_controller
*c
;
72 u8 __user
*user_iop_table
= (void __user
*)arg
;
73 u8 tmp
[MAX_I2O_CONTROLLERS
];
76 memset(tmp
, 0, MAX_I2O_CONTROLLERS
);
78 list_for_each_entry(c
, &i2o_controllers
, list
)
81 if (copy_to_user(user_iop_table
, tmp
, MAX_I2O_CONTROLLERS
))
87 static int i2o_cfg_gethrt(unsigned long arg
)
89 struct i2o_controller
*c
;
90 struct i2o_cmd_hrtlct __user
*cmd
= (struct i2o_cmd_hrtlct __user
*)arg
;
91 struct i2o_cmd_hrtlct kcmd
;
97 if (copy_from_user(&kcmd
, cmd
, sizeof(struct i2o_cmd_hrtlct
)))
100 if (get_user(reslen
, kcmd
.reslen
) < 0)
103 if (kcmd
.resbuf
== NULL
)
106 c
= i2o_find_iop(kcmd
.iop
);
110 hrt
= (i2o_hrt
*) c
->hrt
.virt
;
112 len
= 8 + ((hrt
->entry_len
* hrt
->num_entries
) << 2);
114 /* We did a get user...so assuming mem is ok...is this bad? */
115 put_user(len
, kcmd
.reslen
);
118 if (copy_to_user(kcmd
.resbuf
, (void *)hrt
, len
))
124 static int i2o_cfg_getlct(unsigned long arg
)
126 struct i2o_controller
*c
;
127 struct i2o_cmd_hrtlct __user
*cmd
= (struct i2o_cmd_hrtlct __user
*)arg
;
128 struct i2o_cmd_hrtlct kcmd
;
134 if (copy_from_user(&kcmd
, cmd
, sizeof(struct i2o_cmd_hrtlct
)))
137 if (get_user(reslen
, kcmd
.reslen
) < 0)
140 if (kcmd
.resbuf
== NULL
)
143 c
= i2o_find_iop(kcmd
.iop
);
147 lct
= (i2o_lct
*) c
->lct
;
149 len
= (unsigned int)lct
->table_size
<< 2;
150 put_user(len
, kcmd
.reslen
);
153 else if (copy_to_user(kcmd
.resbuf
, lct
, len
))
159 static int i2o_cfg_parms(unsigned long arg
, unsigned int type
)
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
;
172 u32 i2o_cmd
= (type
== I2OPARMGET
?
173 I2O_CMD_UTIL_PARAMS_GET
: I2O_CMD_UTIL_PARAMS_SET
);
175 if (copy_from_user(&kcmd
, cmd
, sizeof(struct i2o_cmd_psetget
)))
178 if (get_user(reslen
, kcmd
.reslen
))
181 c
= i2o_find_iop(kcmd
.iop
);
185 dev
= i2o_iop_find_device(c
, kcmd
.tid
);
189 ops
= kmalloc(kcmd
.oplen
, GFP_KERNEL
);
193 if (copy_from_user(ops
, kcmd
.opbuf
, kcmd
.oplen
)) {
199 * It's possible to have a _very_ large table
200 * and that the user asks for all of it at once...
202 res
= kmalloc(65536, GFP_KERNEL
);
208 len
= i2o_parm_issue(dev
, i2o_cmd
, ops
, kcmd
.oplen
, res
, 65536);
216 put_user(len
, kcmd
.reslen
);
219 else if (copy_to_user(kcmd
.resbuf
, res
, len
))
227 static int i2o_cfg_swdl(unsigned long arg
)
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
;
237 if (copy_from_user(&kxfer
, pxfer
, sizeof(struct i2o_sw_xfer
)))
240 if (get_user(swlen
, kxfer
.swlen
) < 0)
243 if (get_user(maxfrag
, kxfer
.maxfrag
) < 0)
246 if (get_user(curfrag
, kxfer
.curfrag
) < 0)
249 if (curfrag
== maxfrag
)
250 fragsize
= swlen
- (maxfrag
- 1) * 8192;
252 if (!kxfer
.buf
|| !access_ok(VERIFY_READ
, kxfer
.buf
, fragsize
))
255 c
= i2o_find_iop(kxfer
.iop
);
259 msg
= i2o_msg_get_wait(c
, I2O_TIMEOUT_MESSAGE_GET
);
263 if (i2o_dma_alloc(&c
->pdev
->dev
, &buffer
, fragsize
, GFP_KERNEL
)) {
268 if (__copy_from_user(buffer
.virt
, kxfer
.buf
, fragsize
)) {
270 i2o_dma_free(&c
->pdev
->dev
, &buffer
);
274 msg
->u
.head
[0] = cpu_to_le32(NINE_WORD_MSG_SIZE
| SGL_OFFSET_7
);
276 cpu_to_le32(I2O_CMD_SW_DOWNLOAD
<< 24 | HOST_TID
<< 12 |
278 msg
->u
.head
[2] = cpu_to_le32(i2o_config_driver
.context
);
279 msg
->u
.head
[3] = cpu_to_le32(0);
281 cpu_to_le32((((u32
) kxfer
.flags
) << 24) | (((u32
) kxfer
.
283 (((u32
) maxfrag
) << 8) | (((u32
) curfrag
)));
284 msg
->body
[1] = cpu_to_le32(swlen
);
285 msg
->body
[2] = cpu_to_le32(kxfer
.sw_id
);
286 msg
->body
[3] = cpu_to_le32(0xD0000000 | fragsize
);
287 msg
->body
[4] = cpu_to_le32(buffer
.phys
);
289 osm_debug("swdl frag %d/%d (size %d)\n", curfrag
, maxfrag
, fragsize
);
290 status
= i2o_msg_post_wait_mem(c
, msg
, 60, &buffer
);
292 if (status
!= -ETIMEDOUT
)
293 i2o_dma_free(&c
->pdev
->dev
, &buffer
);
295 if (status
!= I2O_POST_WAIT_OK
) {
296 // it fails if you try and send frags out of order
297 // and for some yet unknown reasons too
298 osm_info("swdl failed, DetailedStatus = %d\n", status
);
305 static int i2o_cfg_swul(unsigned long arg
)
307 struct i2o_sw_xfer kxfer
;
308 struct i2o_sw_xfer __user
*pxfer
= (struct i2o_sw_xfer __user
*)arg
;
309 unsigned char maxfrag
= 0, curfrag
= 1;
310 struct i2o_dma buffer
;
311 struct i2o_message
*msg
;
312 unsigned int status
= 0, swlen
= 0, fragsize
= 8192;
313 struct i2o_controller
*c
;
316 if (copy_from_user(&kxfer
, pxfer
, sizeof(struct i2o_sw_xfer
)))
319 if (get_user(swlen
, kxfer
.swlen
) < 0)
322 if (get_user(maxfrag
, kxfer
.maxfrag
) < 0)
325 if (get_user(curfrag
, kxfer
.curfrag
) < 0)
328 if (curfrag
== maxfrag
)
329 fragsize
= swlen
- (maxfrag
- 1) * 8192;
334 c
= i2o_find_iop(kxfer
.iop
);
338 msg
= i2o_msg_get_wait(c
, I2O_TIMEOUT_MESSAGE_GET
);
342 if (i2o_dma_alloc(&c
->pdev
->dev
, &buffer
, fragsize
, GFP_KERNEL
)) {
347 msg
->u
.head
[0] = cpu_to_le32(NINE_WORD_MSG_SIZE
| SGL_OFFSET_7
);
349 cpu_to_le32(I2O_CMD_SW_UPLOAD
<< 24 | HOST_TID
<< 12 | ADAPTER_TID
);
350 msg
->u
.head
[2] = cpu_to_le32(i2o_config_driver
.context
);
351 msg
->u
.head
[3] = cpu_to_le32(0);
353 cpu_to_le32((u32
) kxfer
.flags
<< 24 | (u32
) kxfer
.
354 sw_type
<< 16 | (u32
) maxfrag
<< 8 | (u32
) curfrag
);
355 msg
->body
[1] = cpu_to_le32(swlen
);
356 msg
->body
[2] = cpu_to_le32(kxfer
.sw_id
);
357 msg
->body
[3] = cpu_to_le32(0xD0000000 | fragsize
);
358 msg
->body
[4] = cpu_to_le32(buffer
.phys
);
360 osm_debug("swul frag %d/%d (size %d)\n", curfrag
, maxfrag
, fragsize
);
361 status
= i2o_msg_post_wait_mem(c
, msg
, 60, &buffer
);
363 if (status
!= I2O_POST_WAIT_OK
) {
364 if (status
!= -ETIMEDOUT
)
365 i2o_dma_free(&c
->pdev
->dev
, &buffer
);
367 osm_info("swul failed, DetailedStatus = %d\n", status
);
371 if (copy_to_user(kxfer
.buf
, buffer
.virt
, fragsize
))
374 i2o_dma_free(&c
->pdev
->dev
, &buffer
);
383 static int i2o_cfg_swdel(unsigned long arg
)
385 struct i2o_controller
*c
;
386 struct i2o_sw_xfer kxfer
;
387 struct i2o_sw_xfer __user
*pxfer
= (struct i2o_sw_xfer __user
*)arg
;
388 struct i2o_message
*msg
;
392 if (copy_from_user(&kxfer
, pxfer
, sizeof(struct i2o_sw_xfer
)))
395 if (get_user(swlen
, kxfer
.swlen
) < 0)
398 c
= i2o_find_iop(kxfer
.iop
);
402 msg
= i2o_msg_get_wait(c
, I2O_TIMEOUT_MESSAGE_GET
);
406 msg
->u
.head
[0] = cpu_to_le32(SEVEN_WORD_MSG_SIZE
| SGL_OFFSET_0
);
408 cpu_to_le32(I2O_CMD_SW_REMOVE
<< 24 | HOST_TID
<< 12 | ADAPTER_TID
);
409 msg
->u
.head
[2] = cpu_to_le32(i2o_config_driver
.context
);
410 msg
->u
.head
[3] = cpu_to_le32(0);
412 cpu_to_le32((u32
) kxfer
.flags
<< 24 | (u32
) kxfer
.sw_type
<< 16);
413 msg
->body
[1] = cpu_to_le32(swlen
);
414 msg
->body
[2] = cpu_to_le32(kxfer
.sw_id
);
416 token
= i2o_msg_post_wait(c
, msg
, 10);
418 if (token
!= I2O_POST_WAIT_OK
) {
419 osm_info("swdel failed, DetailedStatus = %d\n", token
);
426 static int i2o_cfg_validate(unsigned long arg
)
430 struct i2o_message
*msg
;
431 struct i2o_controller
*c
;
433 c
= i2o_find_iop(iop
);
437 msg
= i2o_msg_get_wait(c
, I2O_TIMEOUT_MESSAGE_GET
);
441 msg
->u
.head
[0] = cpu_to_le32(FOUR_WORD_MSG_SIZE
| SGL_OFFSET_0
);
443 cpu_to_le32(I2O_CMD_CONFIG_VALIDATE
<< 24 | HOST_TID
<< 12 | iop
);
444 msg
->u
.head
[2] = cpu_to_le32(i2o_config_driver
.context
);
445 msg
->u
.head
[3] = cpu_to_le32(0);
447 token
= i2o_msg_post_wait(c
, msg
, 10);
449 if (token
!= I2O_POST_WAIT_OK
) {
450 osm_info("Can't validate configuration, ErrorStatus = %d\n",
458 static int i2o_cfg_evt_reg(unsigned long arg
, struct file
*fp
)
460 struct i2o_message
*msg
;
461 struct i2o_evt_id __user
*pdesc
= (struct i2o_evt_id __user
*)arg
;
462 struct i2o_evt_id kdesc
;
463 struct i2o_controller
*c
;
464 struct i2o_device
*d
;
466 if (copy_from_user(&kdesc
, pdesc
, sizeof(struct i2o_evt_id
)))
470 c
= i2o_find_iop(kdesc
.iop
);
475 d
= i2o_iop_find_device(c
, kdesc
.tid
);
479 msg
= i2o_msg_get_wait(c
, I2O_TIMEOUT_MESSAGE_GET
);
483 msg
->u
.head
[0] = cpu_to_le32(FOUR_WORD_MSG_SIZE
| SGL_OFFSET_0
);
485 cpu_to_le32(I2O_CMD_UTIL_EVT_REGISTER
<< 24 | HOST_TID
<< 12 |
487 msg
->u
.head
[2] = cpu_to_le32(i2o_config_driver
.context
);
488 msg
->u
.head
[3] = cpu_to_le32(i2o_cntxt_list_add(c
, fp
->private_data
));
489 msg
->body
[0] = cpu_to_le32(kdesc
.evt_mask
);
491 i2o_msg_post(c
, msg
);
496 static int i2o_cfg_evt_get(unsigned long arg
, struct file
*fp
)
498 struct i2o_cfg_info
*p
= NULL
;
499 struct i2o_evt_get __user
*uget
= (struct i2o_evt_get __user
*)arg
;
500 struct i2o_evt_get kget
;
503 for (p
= open_files
; p
; p
= p
->next
)
504 if (p
->q_id
== (ulong
) fp
->private_data
)
510 memcpy(&kget
.info
, &p
->event_q
[p
->q_out
], sizeof(struct i2o_evt_info
));
511 MODINC(p
->q_out
, I2O_EVT_Q_LEN
);
512 spin_lock_irqsave(&i2o_config_lock
, flags
);
514 kget
.pending
= p
->q_len
;
515 kget
.lost
= p
->q_lost
;
516 spin_unlock_irqrestore(&i2o_config_lock
, flags
);
518 if (copy_to_user(uget
, &kget
, sizeof(struct i2o_evt_get
)))
524 static int i2o_cfg_passthru32(struct file
*file
, unsigned cmnd
,
527 struct i2o_cmd_passthru32 __user
*cmd
;
528 struct i2o_controller
*c
;
529 u32 __user
*user_msg
;
531 u32 __user
*user_reply
= NULL
;
535 struct i2o_dma sg_list
[SG_TABLESIZE
];
540 i2o_status_block
*sb
;
541 struct i2o_message
*msg
;
544 cmd
= (struct i2o_cmd_passthru32 __user
*)arg
;
546 if (get_user(iop
, &cmd
->iop
) || get_user(i
, &cmd
->msg
))
549 user_msg
= compat_ptr(i
);
551 c
= i2o_find_iop(iop
);
553 osm_debug("controller %d not found\n", iop
);
557 msg
= i2o_msg_get_wait(c
, I2O_TIMEOUT_MESSAGE_GET
);
559 sb
= c
->status_block
.virt
;
561 if (get_user(size
, &user_msg
[0])) {
562 osm_warn("unable to get size!\n");
567 if (size
> sb
->inbound_frame_size
) {
568 osm_warn("size of message > inbound_frame_size");
572 user_reply
= &user_msg
[size
];
574 size
<<= 2; // Convert to bytes
576 /* Copy in the user's I2O command */
577 if (copy_from_user(msg
, user_msg
, size
)) {
578 osm_warn("unable to copy user message\n");
581 i2o_dump_message(msg
);
583 if (get_user(reply_size
, &user_reply
[0]) < 0)
589 reply
= kzalloc(reply_size
, GFP_KERNEL
);
591 printk(KERN_WARNING
"%s: Could not allocate reply buffer\n",
596 sg_offset
= (msg
->u
.head
[0] >> 4) & 0x0f;
598 memset(sg_list
, 0, sizeof(sg_list
[0]) * SG_TABLESIZE
);
600 struct sg_simple_element
*sg
;
602 if (sg_offset
* 4 >= size
) {
607 sg
= (struct sg_simple_element
*)((&msg
->u
.head
[0]) +
610 (size
- sg_offset
* 4) / sizeof(struct sg_simple_element
);
611 if (sg_count
> SG_TABLESIZE
) {
612 printk(KERN_DEBUG
"%s:IOCTL SG List too large (%u)\n",
618 for (i
= 0; i
< sg_count
; i
++) {
622 if (!(sg
[i
].flag_count
& 0x10000000
623 /*I2O_SGL_FLAGS_SIMPLE_ADDRESS_ELEMENT */ )) {
625 "%s:Bad SG element %d - not simple (%x)\n",
626 c
->name
, i
, sg
[i
].flag_count
);
630 sg_size
= sg
[i
].flag_count
& 0xffffff;
631 p
= &(sg_list
[sg_index
]);
632 /* Allocate memory for the transfer */
634 (&c
->pdev
->dev
, p
, sg_size
,
635 PCI_DMA_BIDIRECTIONAL
)) {
637 "%s: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
638 c
->name
, sg_size
, i
, sg_count
);
640 goto sg_list_cleanup
;
643 /* Copy in the user's SG buffer if necessary */
645 flag_count
& 0x04000000 /*I2O_SGL_FLAGS_DIR */ ) {
649 (void __user
*)(unsigned long)sg
[i
].
650 addr_bus
, sg_size
)) {
652 "%s: Could not copy SG buf %d FROM user\n",
655 goto sg_list_cleanup
;
659 sg
[i
].addr_bus
= (u32
) p
->phys
;
663 rcode
= i2o_msg_post_wait(c
, msg
, 60);
665 reply
[4] = ((u32
) rcode
) << 24;
666 goto sg_list_cleanup
;
670 u32 msg
[I2O_OUTBOUND_MSG_FRAME_SIZE
];
671 /* Copy back the Scatter Gather buffers back to user space */
674 struct sg_simple_element
*sg
;
677 // re-acquire the original message to handle correctly the sg copy operation
678 memset(&msg
, 0, I2O_OUTBOUND_MSG_FRAME_SIZE
* 4);
679 // get user msg size in u32s
680 if (get_user(size
, &user_msg
[0])) {
682 goto sg_list_cleanup
;
686 /* Copy in the user's I2O command */
687 if (copy_from_user(msg
, user_msg
, size
)) {
689 goto sg_list_cleanup
;
692 (size
- sg_offset
* 4) / sizeof(struct sg_simple_element
);
695 sg
= (struct sg_simple_element
*)(msg
+ sg_offset
);
696 for (j
= 0; j
< sg_count
; j
++) {
697 /* Copy out the SG list to user's buffer if necessary */
700 flag_count
& 0x4000000 /*I2O_SGL_FLAGS_DIR */ )) {
701 sg_size
= sg
[j
].flag_count
& 0xffffff;
704 ((void __user
*)(u64
) sg
[j
].addr_bus
,
705 sg_list
[j
].virt
, sg_size
)) {
707 "%s: Could not copy %p TO user %x\n",
708 c
->name
, sg_list
[j
].virt
,
711 goto sg_list_cleanup
;
718 /* Copy back the reply to user space */
720 // we wrote our own values for context - now restore the user supplied ones
721 if (copy_from_user(reply
+ 2, user_msg
+ 2, sizeof(u32
) * 2)) {
723 "%s: Could not copy message context FROM user\n",
726 goto sg_list_cleanup
;
728 if (copy_to_user(user_reply
, reply
, reply_size
)) {
730 "%s: Could not copy reply TO user\n", c
->name
);
735 for (i
= 0; i
< sg_index
; i
++)
736 i2o_dma_free(&c
->pdev
->dev
, &sg_list
[i
]);
743 static long i2o_cfg_compat_ioctl(struct file
*file
, unsigned cmd
,
750 ret
= i2o_cfg_ioctl(NULL
, file
, cmd
, arg
);
753 ret
= i2o_cfg_passthru32(file
, cmd
, arg
);
765 #ifdef CONFIG_I2O_EXT_ADAPTEC
766 static int i2o_cfg_passthru(unsigned long arg
)
768 struct i2o_cmd_passthru __user
*cmd
=
769 (struct i2o_cmd_passthru __user
*)arg
;
770 struct i2o_controller
*c
;
771 u32 __user
*user_msg
;
773 u32 __user
*user_reply
= NULL
;
777 void *sg_list
[SG_TABLESIZE
];
783 i2o_status_block
*sb
;
784 struct i2o_message
*msg
;
787 if (get_user(iop
, &cmd
->iop
) || get_user(user_msg
, &cmd
->msg
))
790 c
= i2o_find_iop(iop
);
792 osm_warn("controller %d not found\n", iop
);
796 msg
= i2o_msg_get_wait(c
, I2O_TIMEOUT_MESSAGE_GET
);
798 sb
= c
->status_block
.virt
;
800 if (get_user(size
, &user_msg
[0]))
804 if (size
> sb
->inbound_frame_size
) {
805 osm_warn("size of message > inbound_frame_size");
809 user_reply
= &user_msg
[size
];
811 size
<<= 2; // Convert to bytes
813 /* Copy in the user's I2O command */
814 if (copy_from_user(msg
, user_msg
, size
))
817 if (get_user(reply_size
, &user_reply
[0]) < 0)
823 reply
= kzalloc(reply_size
, GFP_KERNEL
);
825 printk(KERN_WARNING
"%s: Could not allocate reply buffer\n",
830 sg_offset
= (msg
->u
.head
[0] >> 4) & 0x0f;
832 memset(sg_list
, 0, sizeof(sg_list
[0]) * SG_TABLESIZE
);
834 struct sg_simple_element
*sg
;
836 if (sg_offset
* 4 >= size
) {
841 sg
= (struct sg_simple_element
*)((&msg
->u
.head
[0]) +
844 (size
- sg_offset
* 4) / sizeof(struct sg_simple_element
);
845 if (sg_count
> SG_TABLESIZE
) {
846 printk(KERN_DEBUG
"%s:IOCTL SG List too large (%u)\n",
852 for (i
= 0; i
< sg_count
; i
++) {
855 if (!(sg
[i
].flag_count
& 0x10000000
856 /*I2O_SGL_FLAGS_SIMPLE_ADDRESS_ELEMENT */ )) {
858 "%s:Bad SG element %d - not simple (%x)\n",
859 c
->name
, i
, sg
[i
].flag_count
);
861 goto sg_list_cleanup
;
863 sg_size
= sg
[i
].flag_count
& 0xffffff;
864 /* Allocate memory for the transfer */
865 p
= kmalloc(sg_size
, GFP_KERNEL
);
868 "%s: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
869 c
->name
, sg_size
, i
, sg_count
);
871 goto sg_list_cleanup
;
873 sg_list
[sg_index
++] = p
; // sglist indexed with input frame, not our internal frame.
874 /* Copy in the user's SG buffer if necessary */
876 flag_count
& 0x04000000 /*I2O_SGL_FLAGS_DIR */ ) {
879 (p
, (void __user
*)sg
[i
].addr_bus
,
882 "%s: Could not copy SG buf %d FROM user\n",
885 goto sg_list_cleanup
;
889 sg
[i
].addr_bus
= virt_to_bus(p
);
893 rcode
= i2o_msg_post_wait(c
, msg
, 60);
895 reply
[4] = ((u32
) rcode
) << 24;
896 goto sg_list_cleanup
;
901 /* Copy back the Scatter Gather buffers back to user space */
904 struct sg_simple_element
*sg
;
907 // re-acquire the original message to handle correctly the sg copy operation
908 memset(&msg
, 0, I2O_OUTBOUND_MSG_FRAME_SIZE
* 4);
909 // get user msg size in u32s
910 if (get_user(size
, &user_msg
[0])) {
912 goto sg_list_cleanup
;
916 /* Copy in the user's I2O command */
917 if (copy_from_user(msg
, user_msg
, size
)) {
919 goto sg_list_cleanup
;
922 (size
- sg_offset
* 4) / sizeof(struct sg_simple_element
);
925 sg
= (struct sg_simple_element
*)(msg
+ sg_offset
);
926 for (j
= 0; j
< sg_count
; j
++) {
927 /* Copy out the SG list to user's buffer if necessary */
930 flag_count
& 0x4000000 /*I2O_SGL_FLAGS_DIR */ )) {
931 sg_size
= sg
[j
].flag_count
& 0xffffff;
934 ((void __user
*)sg
[j
].addr_bus
, sg_list
[j
],
937 "%s: Could not copy %p TO user %x\n",
941 goto sg_list_cleanup
;
948 /* Copy back the reply to user space */
950 // we wrote our own values for context - now restore the user supplied ones
951 if (copy_from_user(reply
+ 2, user_msg
+ 2, sizeof(u32
) * 2)) {
953 "%s: Could not copy message context FROM user\n",
957 if (copy_to_user(user_reply
, reply
, reply_size
)) {
959 "%s: Could not copy reply TO user\n", c
->name
);
964 for (i
= 0; i
< sg_index
; i
++)
976 static int i2o_cfg_ioctl(struct inode
*inode
, struct file
*fp
, unsigned int cmd
,
983 ret
= i2o_cfg_getiops(arg
);
987 ret
= i2o_cfg_gethrt(arg
);
991 ret
= i2o_cfg_getlct(arg
);
995 ret
= i2o_cfg_parms(arg
, I2OPARMSET
);
999 ret
= i2o_cfg_parms(arg
, I2OPARMGET
);
1003 ret
= i2o_cfg_swdl(arg
);
1007 ret
= i2o_cfg_swul(arg
);
1011 ret
= i2o_cfg_swdel(arg
);
1015 ret
= i2o_cfg_validate(arg
);
1019 ret
= i2o_cfg_evt_reg(arg
, fp
);
1023 ret
= i2o_cfg_evt_get(arg
, fp
);
1026 #ifdef CONFIG_I2O_EXT_ADAPTEC
1028 ret
= i2o_cfg_passthru(arg
);
1033 osm_debug("unknown ioctl called!\n");
1040 static int cfg_open(struct inode
*inode
, struct file
*file
)
1042 struct i2o_cfg_info
*tmp
=
1043 (struct i2o_cfg_info
*)kmalloc(sizeof(struct i2o_cfg_info
),
1045 unsigned long flags
;
1050 file
->private_data
= (void *)(i2o_cfg_info_id
++);
1053 tmp
->q_id
= (ulong
) file
->private_data
;
1058 tmp
->next
= open_files
;
1060 spin_lock_irqsave(&i2o_config_lock
, flags
);
1062 spin_unlock_irqrestore(&i2o_config_lock
, flags
);
1067 static int cfg_fasync(int fd
, struct file
*fp
, int on
)
1069 ulong id
= (ulong
) fp
->private_data
;
1070 struct i2o_cfg_info
*p
;
1072 for (p
= open_files
; p
; p
= p
->next
)
1079 return fasync_helper(fd
, fp
, on
, &p
->fasync
);
1082 static int cfg_release(struct inode
*inode
, struct file
*file
)
1084 ulong id
= (ulong
) file
->private_data
;
1085 struct i2o_cfg_info
*p1
, *p2
;
1086 unsigned long flags
;
1091 spin_lock_irqsave(&i2o_config_lock
, flags
);
1092 for (p1
= open_files
; p1
;) {
1093 if (p1
->q_id
== id
) {
1096 cfg_fasync(-1, file
, 0);
1098 p2
->next
= p1
->next
;
1100 open_files
= p1
->next
;
1108 spin_unlock_irqrestore(&i2o_config_lock
, flags
);
1114 static const struct file_operations config_fops
= {
1115 .owner
= THIS_MODULE
,
1116 .llseek
= no_llseek
,
1117 .ioctl
= i2o_cfg_ioctl
,
1118 #ifdef CONFIG_COMPAT
1119 .compat_ioctl
= i2o_cfg_compat_ioctl
,
1122 .release
= cfg_release
,
1123 .fasync
= cfg_fasync
,
1126 static struct miscdevice i2o_miscdev
= {
1132 static int __init
i2o_config_old_init(void)
1134 spin_lock_init(&i2o_config_lock
);
1136 if (misc_register(&i2o_miscdev
) < 0) {
1137 osm_err("can't register device.\n");
1144 static void i2o_config_old_exit(void)
1146 misc_deregister(&i2o_miscdev
);
1149 MODULE_AUTHOR("Red Hat Software");