1 /*-
2 * Copyright (c) 2002 Adaptec Inc.
3 * All rights reserved.
4 *
5 * Written by: David Jeffery
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 * $FreeBSD: releng/5.1/sys/dev/ips/ips_ioctl.c 114902 2003-05-11 06:36:49Z scottl $
29 */
30
31
32 #include <dev/ips/ips.h>
33 #include <dev/ips/ips_ioctl.h>
34 static 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
51 static 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 }
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
86 static int ips_ioctl_cmd(ips_softc_t *sc, ips_ioctl_t *ioctl_cmd, ips_user_request *user_request)
87 {
88 int error = EINVAL;
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_DEVBUF, M_WAITOK);
140 ioctl_cmd->command_buffer = malloc(sizeof(ips_generic_cmd),
141 M_DEVBUF, 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_DEVBUF);
145 free(ioctl_cmd, M_DEVBUF);
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_DEVBUF);
152 free(ioctl_cmd, M_DEVBUF);
153 break;
154 }
155
156 return error;
157 }
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