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