1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Written by: David Jeffery
5 * Copyright (c) 2002 Adaptec Inc.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30 #include <sys/cdefs.h>
31 #include <dev/ips/ipsreg.h>
32 #include <dev/ips/ips.h>
33 #include <dev/ips/ips_ioctl.h>
34
ips_ioctl_finish(ips_command_t * command)35 static void ips_ioctl_finish(ips_command_t *command)
36 {
37 ips_ioctl_t *ioctl_cmd = command->arg;
38 if(ioctl_cmd->readwrite & IPS_IOCTL_READ){
39 bus_dmamap_sync(ioctl_cmd->dmatag, ioctl_cmd->dmamap,
40 BUS_DMASYNC_POSTREAD);
41 } else if(ioctl_cmd->readwrite & IPS_IOCTL_WRITE){
42 bus_dmamap_sync(ioctl_cmd->dmatag, ioctl_cmd->dmamap,
43 BUS_DMASYNC_POSTWRITE);
44 }
45 bus_dmamap_sync(command->sc->command_dmatag, command->command_dmamap,
46 BUS_DMASYNC_POSTWRITE);
47 bus_dmamap_unload(ioctl_cmd->dmatag, ioctl_cmd->dmamap);
48 ioctl_cmd->status.value = command->status.value;
49 ips_insert_free_cmd(command->sc, command);
50 }
51
ips_ioctl_callback(void * cmdptr,bus_dma_segment_t * segments,int segnum,int error)52 static void ips_ioctl_callback(void *cmdptr, bus_dma_segment_t *segments,int segnum, int error)
53 {
54 ips_command_t *command = cmdptr;
55 ips_ioctl_t *ioctl_cmd = command->arg;
56 ips_generic_cmd *command_buffer = command->command_buffer;
57 if(error){
58 ips_set_error(command, error);
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 }
ips_ioctl_start(ips_command_t * command)74 static 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
ips_ioctl_cmd(ips_softc_t * sc,ips_ioctl_t * ioctl_cmd,ips_user_request * user_request)86 static int ips_ioctl_cmd(ips_softc_t *sc, ips_ioctl_t *ioctl_cmd, ips_user_request *user_request)
87 {
88 ips_command_t *command;
89 int error = EINVAL;
90
91 if (bus_dma_tag_create( /* parent */ sc->adapter_dmatag,
92 /* alignment */ 1,
93 /* boundary */ 0,
94 /* lowaddr */ BUS_SPACE_MAXADDR_32BIT,
95 /* highaddr */ BUS_SPACE_MAXADDR,
96 /* filter */ NULL,
97 /* filterarg */ NULL,
98 /* maxsize */ ioctl_cmd->datasize,
99 /* numsegs */ 1,
100 /* maxsegsize*/ ioctl_cmd->datasize,
101 /* flags */ 0,
102 /* lockfunc */ NULL,
103 /* lockarg */ NULL,
104 &ioctl_cmd->dmatag) != 0) {
105 return ENOMEM;
106 }
107 if(bus_dmamem_alloc(ioctl_cmd->dmatag, &ioctl_cmd->data_buffer,
108 0, &ioctl_cmd->dmamap)){
109 error = ENOMEM;
110 goto exit;
111 }
112 if(copyin(user_request->data_buffer,ioctl_cmd->data_buffer,
113 ioctl_cmd->datasize))
114 goto exit;
115 ioctl_cmd->status.value = 0xffffffff;
116 mtx_lock(&sc->queue_mtx);
117 if((error = ips_get_free_cmd(sc, &command, 0)) > 0){
118 error = ENOMEM;
119 mtx_unlock(&sc->queue_mtx);
120 goto exit;
121 }
122 command->arg = ioctl_cmd;
123 ips_ioctl_start(command);
124 while( ioctl_cmd->status.value == 0xffffffff)
125 msleep(ioctl_cmd, &sc->queue_mtx, 0, "ips", hz/10);
126 if(COMMAND_ERROR(ioctl_cmd))
127 error = EIO;
128 else
129 error = 0;
130 mtx_unlock(&sc->queue_mtx);
131 if(copyout(ioctl_cmd->data_buffer, user_request->data_buffer,
132 ioctl_cmd->datasize))
133 error = EINVAL;
134 mtx_lock(&sc->queue_mtx);
135 ips_insert_free_cmd(sc, command);
136 mtx_unlock(&sc->queue_mtx);
137
138 exit: bus_dmamem_free(ioctl_cmd->dmatag, ioctl_cmd->data_buffer,
139 ioctl_cmd->dmamap);
140 bus_dma_tag_destroy(ioctl_cmd->dmatag);
141 return error;
142 }
143
144
ips_ioctl_request(ips_softc_t * sc,u_long ioctl_request,caddr_t addr,int32_t flags)145 int ips_ioctl_request(ips_softc_t *sc, u_long ioctl_request, caddr_t addr, int32_t flags){
146 int error = EINVAL;
147 ips_ioctl_t *ioctl_cmd;
148 ips_user_request *user_request;
149 switch(ioctl_request){
150 case IPS_USER_CMD:
151 user_request = (ips_user_request *)addr;
152 ioctl_cmd = malloc(sizeof(ips_ioctl_t), M_IPSBUF, M_WAITOK);
153 ioctl_cmd->command_buffer = malloc(sizeof(ips_generic_cmd),
154 M_IPSBUF, M_WAITOK);
155 if(copyin(user_request->command_buffer,
156 ioctl_cmd->command_buffer, sizeof(ips_generic_cmd))){
157 free(ioctl_cmd->command_buffer, M_IPSBUF);
158 free(ioctl_cmd, M_IPSBUF);
159 break;
160 }
161 ioctl_cmd->readwrite = IPS_IOCTL_READ | IPS_IOCTL_WRITE;
162 ioctl_cmd->datasize = IPS_IOCTL_BUFFER_SIZE;
163 error = ips_ioctl_cmd(sc, ioctl_cmd, user_request);
164 free(ioctl_cmd->command_buffer, M_IPSBUF);
165 free(ioctl_cmd, M_IPSBUF);
166 break;
167 }
168
169 return error;
170 }
171