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
28#include <sys/cdefs.h>
29__FBSDID("$FreeBSD: head/sys/dev/ips/ips_ioctl.c 129859 2004-05-30 04:01:29Z scottl $");
30
31#include <dev/ips/ips.h>
32#include <dev/ips/ips_ioctl.h>
33
34static void ips_ioctl_finish(ips_command_t *command)
35{
36 ips_ioctl_t *ioctl_cmd = command->arg;
37 if(ioctl_cmd->readwrite & IPS_IOCTL_READ){
38 bus_dmamap_sync(ioctl_cmd->dmatag, ioctl_cmd->dmamap,
39 BUS_DMASYNC_POSTREAD);
40 } else if(ioctl_cmd->readwrite & IPS_IOCTL_WRITE){
41 bus_dmamap_sync(ioctl_cmd->dmatag, ioctl_cmd->dmamap,
42 BUS_DMASYNC_POSTWRITE);
43 }
44 bus_dmamap_sync(command->sc->command_dmatag, command->command_dmamap,
45 BUS_DMASYNC_POSTWRITE);
46 bus_dmamap_unload(ioctl_cmd->dmatag, ioctl_cmd->dmamap);
47 ioctl_cmd->status.value = command->status.value;
48 ips_insert_free_cmd(command->sc, command);
49}
50
51static void ips_ioctl_callback(void *cmdptr, bus_dma_segment_t *segments,int segnum, int error)
52{
53 ips_command_t *command = cmdptr;
54 ips_ioctl_t *ioctl_cmd = command->arg;
55 ips_generic_cmd *command_buffer = command->command_buffer;
56 if(error){
57 ioctl_cmd->status.value = IPS_ERROR_STATUS;
58 ips_insert_free_cmd(command->sc, command);
59 return;
60 }
61 command_buffer->id = command->id;
62 command_buffer->buffaddr = segments[0].ds_addr;
63 if(ioctl_cmd->readwrite & IPS_IOCTL_WRITE){
64 bus_dmamap_sync(ioctl_cmd->dmatag, ioctl_cmd->dmamap,
65 BUS_DMASYNC_PREWRITE);
66 } else if(ioctl_cmd->readwrite & IPS_IOCTL_READ){
67 bus_dmamap_sync(ioctl_cmd->dmatag, ioctl_cmd->dmamap,
68 BUS_DMASYNC_PREREAD);
69 }
70 bus_dmamap_sync(command->sc->command_dmatag, command->command_dmamap,
71 BUS_DMASYNC_PREWRITE);
72 command->sc->ips_issue_cmd(command);
73}
74static int ips_ioctl_start(ips_command_t *command)
75{
76 ips_ioctl_t *ioctl_cmd = command->arg;
77 memcpy(command->command_buffer, ioctl_cmd->command_buffer,
78 sizeof(ips_generic_cmd));
79 command->callback = ips_ioctl_finish;
80 bus_dmamap_load(ioctl_cmd->dmatag, ioctl_cmd->dmamap,
81 ioctl_cmd->data_buffer,ioctl_cmd->datasize,
82 ips_ioctl_callback, command, 0);
83 return 0;
84}
85
86static int ips_ioctl_cmd(ips_softc_t *sc, ips_ioctl_t *ioctl_cmd, ips_user_request *user_request)
87{
88 int error = EINVAL;
89
90 if (bus_dma_tag_create( /* parent */ sc->adapter_dmatag,
91 /* alignment */ 1,
92 /* boundary */ 0,
93 /* lowaddr */ BUS_SPACE_MAXADDR_32BIT,
94 /* highaddr */ BUS_SPACE_MAXADDR,
95 /* filter */ NULL,
96 /* filterarg */ NULL,
97 /* maxsize */ ioctl_cmd->datasize,
98 /* numsegs */ 1,
99 /* maxsegsize*/ ioctl_cmd->datasize,
100 /* flags */ 0,
101 /* lockfunc */ busdma_lock_mutex,
102 /* lockarg */ &Giant,
103 &ioctl_cmd->dmatag) != 0) {
104 return ENOMEM;
105 }
106 if(bus_dmamem_alloc(ioctl_cmd->dmatag, &ioctl_cmd->data_buffer,
107 0, &ioctl_cmd->dmamap)){
108 error = ENOMEM;
109 goto exit;
110 }
111 if(copyin(user_request->data_buffer,ioctl_cmd->data_buffer,
112 ioctl_cmd->datasize))
113 goto exit;
114 ioctl_cmd->status.value = 0xffffffff;
115 if((error = ips_get_free_cmd(sc, ips_ioctl_start, ioctl_cmd,0)) > 0){
116 error = ENOMEM;
117 goto exit;
118 }
119 while( ioctl_cmd->status.value == 0xffffffff)
120 tsleep(ioctl_cmd, 0, "ips", hz/10);
121 if(COMMAND_ERROR(&ioctl_cmd->status))
122 error = EIO;
123 else
124 error = 0;
125 if(copyout(ioctl_cmd->data_buffer, user_request->data_buffer,
126 ioctl_cmd->datasize))
127 error = EINVAL;
128exit: bus_dmamem_free(ioctl_cmd->dmatag, ioctl_cmd->data_buffer,
129 ioctl_cmd->dmamap);
130 bus_dma_tag_destroy(ioctl_cmd->dmatag);
131 return error;
132}
133
134
135int ips_ioctl_request(ips_softc_t *sc, u_long ioctl_request, caddr_t addr, int32_t flags){
136 int error = EINVAL;
137 ips_ioctl_t *ioctl_cmd;
138 ips_user_request *user_request;
139 switch(ioctl_request){
140 case IPS_USER_CMD:
141 user_request = (ips_user_request *)addr;
142 ioctl_cmd = malloc(sizeof(ips_ioctl_t), M_IPSBUF, M_WAITOK);
143 ioctl_cmd->command_buffer = malloc(sizeof(ips_generic_cmd),
144 M_IPSBUF, M_WAITOK);
145 if(copyin(user_request->command_buffer,
146 ioctl_cmd->command_buffer, sizeof(ips_generic_cmd))){
147 free(ioctl_cmd->command_buffer, M_IPSBUF);
148 free(ioctl_cmd, M_IPSBUF);
149 break;
150 }
151 ioctl_cmd->readwrite = IPS_IOCTL_READ | IPS_IOCTL_WRITE;
152 ioctl_cmd->datasize = IPS_IOCTL_BUFFER_SIZE;
153 error = ips_ioctl_cmd(sc, ioctl_cmd, user_request);
154 free(ioctl_cmd->command_buffer, M_IPSBUF);
155 free(ioctl_cmd, M_IPSBUF);
156 break;
157 }
158
159 return error;
160}