kernel: Add D_MPSAFE to the ops of mfi(4), mrsas(4) and twa(4).
[dragonfly.git] / sys / dev / raid / ips / ips_ioctl.c
1 /*-
2  * Written by: David Jeffery
3  * Copyright (c) 2002 Adaptec Inc.
4  * All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  *
15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25  * SUCH DAMAGE.
26  *
27  * $FreeBSD: src/sys/dev/ips/ips_ioctl.c,v 1.5 2004/05/30 04:01:29 scottl Exp $
28  * $DragonFly: src/sys/dev/raid/ips/ips_ioctl.c,v 1.8 2006/09/05 03:48:11 dillon Exp $
29  */
30
31 #include <dev/raid/ips/ips.h>
32 #include <dev/raid/ips/ips_ioctl.h>
33 #include <sys/thread2.h>
34
35 static void
36 ips_ioctl_finish(ips_command_t *command)
37 {
38         ips_ioctl_t *ioctl_cmd = command->arg;
39
40         if (ioctl_cmd->readwrite & IPS_IOCTL_READ) {
41                 bus_dmamap_sync(ioctl_cmd->dmatag, ioctl_cmd->dmamap,
42                     BUS_DMASYNC_POSTREAD);
43         } else if (ioctl_cmd->readwrite & IPS_IOCTL_WRITE) {
44                 bus_dmamap_sync(ioctl_cmd->dmatag, ioctl_cmd->dmamap,
45                     BUS_DMASYNC_POSTWRITE);
46         }
47         bus_dmamap_sync(command->sc->command_dmatag, command->command_dmamap,
48             BUS_DMASYNC_POSTWRITE);
49         bus_dmamap_unload(ioctl_cmd->dmatag, ioctl_cmd->dmamap);
50         ioctl_cmd->status.value = command->status.value;
51         ips_insert_free_cmd(command->sc, command);
52 }
53
54 static void
55 ips_ioctl_callback(void *cmdptr, bus_dma_segment_t *segments,
56     int segnum, int error)
57 {
58         ips_command_t *command;
59         ips_ioctl_t *ioctl_cmd;
60         ips_generic_cmd *command_buffer;
61
62         command = cmdptr;
63         ioctl_cmd = command->arg;
64         command_buffer = command->command_buffer;
65         if (error) {
66                 ioctl_cmd->status.value = IPS_ERROR_STATUS;
67                 ips_insert_free_cmd(command->sc, command);
68                 return;
69         }
70         command_buffer->id = command->id;
71         command_buffer->buffaddr = segments[0].ds_addr;
72         if (ioctl_cmd->readwrite & IPS_IOCTL_WRITE) {
73                 bus_dmamap_sync(ioctl_cmd->dmatag, ioctl_cmd->dmamap,
74                     BUS_DMASYNC_PREWRITE);
75         } else if (ioctl_cmd->readwrite & IPS_IOCTL_READ) {
76                 bus_dmamap_sync(ioctl_cmd->dmatag, ioctl_cmd->dmamap,
77                     BUS_DMASYNC_PREREAD);
78         }
79         bus_dmamap_sync(command->sc->command_dmatag, command->command_dmamap,
80             BUS_DMASYNC_PREWRITE);
81         command->sc->ips_issue_cmd(command);
82 }
83
84 static int
85 ips_ioctl_start(ips_command_t *command)
86 {
87         ips_ioctl_t *ioctl_cmd = command->arg;
88
89         memcpy(command->command_buffer, ioctl_cmd->command_buffer,
90             sizeof(ips_generic_cmd));
91         command->callback = ips_ioctl_finish;
92         bus_dmamap_load(ioctl_cmd->dmatag, ioctl_cmd->dmamap,
93             ioctl_cmd->data_buffer, ioctl_cmd->datasize, ips_ioctl_callback,
94             command, 0);
95         return 0;
96 }
97
98 static int
99 ips_ioctl_cmd(ips_softc_t *sc, ips_ioctl_t *ioctl_cmd,
100     ips_user_request *user_request)
101 {
102         ips_command_t *command;
103         int error = EINVAL;
104
105         if (bus_dma_tag_create(
106                         /* parent    */ sc->adapter_dmatag,
107                         /* alignment */ 1,
108                         /* boundary  */ 0,
109                         /* lowaddr   */ BUS_SPACE_MAXADDR_32BIT,
110                         /* highaddr  */ BUS_SPACE_MAXADDR,
111                         /* filter    */ NULL,
112                         /* filterarg */ NULL,
113                         /* maxsize   */ ioctl_cmd->datasize,
114                         /* numsegs   */ 1,
115                         /* maxsegsize*/ ioctl_cmd->datasize,
116                         /* flags     */ 0,
117                         &ioctl_cmd->dmatag) != 0) {
118                 return ENOMEM;
119         }
120         if (bus_dmamem_alloc(ioctl_cmd->dmatag, &ioctl_cmd->data_buffer,
121             0, &ioctl_cmd->dmamap)) {
122                 error = ENOMEM;
123                 goto exit;
124         }
125         if (copyin(user_request->data_buffer, ioctl_cmd->data_buffer,
126             ioctl_cmd->datasize))
127                 goto exit;
128         ioctl_cmd->status.value = 0xffffffff;
129         lockmgr(&sc->queue_lock, LK_EXCLUSIVE|LK_RETRY);
130         if ((error = ips_get_free_cmd(sc, &command, 0)) > 0) {
131                 error = ENOMEM;
132                 lockmgr(&sc->queue_lock, LK_RELEASE);
133                 goto exit;
134         }
135         command->arg = ioctl_cmd;
136         ips_ioctl_start(command);
137         while (ioctl_cmd->status.value == 0xffffffff)
138                 tsleep(ioctl_cmd, 0, "ips", hz / 10);
139         if (COMMAND_ERROR(&ioctl_cmd->status))
140                 error = EIO;
141         else
142                 error = 0;
143         lockmgr(&sc->queue_lock, LK_RELEASE);
144
145         if (copyout(ioctl_cmd->data_buffer, user_request->data_buffer,
146             ioctl_cmd->datasize))
147                 error = EINVAL;
148 exit:
149         bus_dmamem_free(ioctl_cmd->dmatag, ioctl_cmd->data_buffer,
150             ioctl_cmd->dmamap);
151         bus_dma_tag_destroy(ioctl_cmd->dmatag);
152         return error;
153 }
154
155 int
156 ips_ioctl_request(ips_softc_t *sc, u_long ioctl_request, caddr_t addr,
157     int32_t flags)
158 {
159         ips_ioctl_t *ioctl_cmd;
160         ips_user_request *user_request;
161         int error = EINVAL;
162
163         switch (ioctl_request) {
164         case IPS_USER_CMD:
165                 user_request = (ips_user_request *)addr;
166                 ioctl_cmd = kmalloc(sizeof(ips_ioctl_t), M_IPSBUF, M_WAITOK);
167                 ioctl_cmd->command_buffer = kmalloc(sizeof(ips_generic_cmd),
168                     M_IPSBUF, M_WAITOK);
169                 if (copyin(user_request->command_buffer,
170                     ioctl_cmd->command_buffer, sizeof(ips_generic_cmd))) {
171                         kfree(ioctl_cmd->command_buffer, M_IPSBUF);
172                         kfree(ioctl_cmd, M_IPSBUF);
173                         break;
174                 }
175                 ioctl_cmd->readwrite = IPS_IOCTL_READ | IPS_IOCTL_WRITE;
176                 ioctl_cmd->datasize = IPS_IOCTL_BUFFER_SIZE;
177                 error = ips_ioctl_cmd(sc, ioctl_cmd, user_request);
178                 kfree(ioctl_cmd->command_buffer, M_IPSBUF);
179                 kfree(ioctl_cmd, M_IPSBUF);
180                 break;
181         }
182         return error;
183 }