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 1.4 2004/09/06 16:39:47 joerg Exp $ 29 */ 30 31 #include <dev/raid/ips/ips.h> 32 #include <dev/raid/ips/ips_ioctl.h> 33 34 static void 35 ips_ioctl_finish(ips_command_t *command) 36 { 37 ips_ioctl_t *ioctl_cmd = command->arg; 38 39 if (ioctl_cmd->readwrite & IPS_IOCTL_READ) { 40 bus_dmamap_sync(ioctl_cmd->dmatag, ioctl_cmd->dmamap, 41 BUS_DMASYNC_POSTREAD); 42 } else if (ioctl_cmd->readwrite & IPS_IOCTL_WRITE) { 43 bus_dmamap_sync(ioctl_cmd->dmatag, ioctl_cmd->dmamap, 44 BUS_DMASYNC_POSTWRITE); 45 } 46 bus_dmamap_sync(command->sc->command_dmatag, command->command_dmamap, 47 BUS_DMASYNC_POSTWRITE); 48 bus_dmamap_unload(ioctl_cmd->dmatag, ioctl_cmd->dmamap); 49 ioctl_cmd->status.value = command->status.value; 50 ips_insert_free_cmd(command->sc, command); 51 } 52 53 static void 54 ips_ioctl_callback(void *cmdptr, bus_dma_segment_t *segments, 55 int segnum, int error) 56 { 57 ips_command_t *command; 58 ips_ioctl_t *ioctl_cmd; 59 ips_generic_cmd *command_buffer; 60 61 command = cmdptr; 62 ioctl_cmd = command->arg; 63 command_buffer = command->command_buffer; 64 if (error) { 65 ioctl_cmd->status.value = IPS_ERROR_STATUS; 66 ips_insert_free_cmd(command->sc, command); 67 return; 68 } 69 command_buffer->id = command->id; 70 command_buffer->buffaddr = segments[0].ds_addr; 71 if (ioctl_cmd->readwrite & IPS_IOCTL_WRITE) { 72 bus_dmamap_sync(ioctl_cmd->dmatag, ioctl_cmd->dmamap, 73 BUS_DMASYNC_PREWRITE); 74 } else if (ioctl_cmd->readwrite & IPS_IOCTL_READ) { 75 bus_dmamap_sync(ioctl_cmd->dmatag, ioctl_cmd->dmamap, 76 BUS_DMASYNC_PREREAD); 77 } 78 bus_dmamap_sync(command->sc->command_dmatag, command->command_dmamap, 79 BUS_DMASYNC_PREWRITE); 80 command->sc->ips_issue_cmd(command); 81 } 82 83 static int 84 ips_ioctl_start(ips_command_t *command) 85 { 86 ips_ioctl_t *ioctl_cmd = command->arg; 87 88 memcpy(command->command_buffer, ioctl_cmd->command_buffer, 89 sizeof(ips_generic_cmd)); 90 command->callback = ips_ioctl_finish; 91 bus_dmamap_load(ioctl_cmd->dmatag, ioctl_cmd->dmamap, 92 ioctl_cmd->data_buffer, ioctl_cmd->datasize, ips_ioctl_callback, 93 command, 0); 94 return 0; 95 } 96 97 static int 98 ips_ioctl_cmd(ips_softc_t *sc, ips_ioctl_t *ioctl_cmd, 99 ips_user_request *user_request) 100 { 101 int error = EINVAL; 102 103 if (bus_dma_tag_create( 104 /* parent */ sc->adapter_dmatag, 105 /* alignment */ 1, 106 /* boundary */ 0, 107 /* lowaddr */ BUS_SPACE_MAXADDR_32BIT, 108 /* highaddr */ BUS_SPACE_MAXADDR, 109 /* filter */ NULL, 110 /* filterarg */ NULL, 111 /* maxsize */ ioctl_cmd->datasize, 112 /* numsegs */ 1, 113 /* maxsegsize*/ ioctl_cmd->datasize, 114 /* flags */ 0, 115 &ioctl_cmd->dmatag) != 0) { 116 return ENOMEM; 117 } 118 if (bus_dmamem_alloc(ioctl_cmd->dmatag, &ioctl_cmd->data_buffer, 119 0, &ioctl_cmd->dmamap)) { 120 error = ENOMEM; 121 goto exit; 122 } 123 if (copyin(user_request->data_buffer, ioctl_cmd->data_buffer, 124 ioctl_cmd->datasize)) 125 goto exit; 126 ioctl_cmd->status.value = 0xffffffff; 127 if ((error = ips_get_free_cmd(sc, ips_ioctl_start, ioctl_cmd, 0)) > 0) { 128 error = ENOMEM; 129 goto exit; 130 } 131 while (ioctl_cmd->status.value == 0xffffffff) 132 tsleep(ioctl_cmd, 0, "ips", hz / 10); 133 if (COMMAND_ERROR(&ioctl_cmd->status)) 134 error = EIO; 135 else 136 error = 0; 137 if (copyout(ioctl_cmd->data_buffer, user_request->data_buffer, 138 ioctl_cmd->datasize)) 139 error = EINVAL; 140 exit: 141 bus_dmamem_free(ioctl_cmd->dmatag, ioctl_cmd->data_buffer, 142 ioctl_cmd->dmamap); 143 bus_dma_tag_destroy(ioctl_cmd->dmatag); 144 return error; 145 } 146 147 int 148 ips_ioctl_request(ips_softc_t *sc, u_long ioctl_request, caddr_t addr, 149 int32_t flags) 150 { 151 ips_ioctl_t *ioctl_cmd; 152 ips_user_request *user_request; 153 int error = EINVAL; 154 155 switch (ioctl_request) { 156 case IPS_USER_CMD: 157 user_request = (ips_user_request *)addr; 158 ioctl_cmd = malloc(sizeof(ips_ioctl_t), M_IPSBUF, M_WAITOK); 159 ioctl_cmd->command_buffer = malloc(sizeof(ips_generic_cmd), 160 M_IPSBUF, M_WAITOK); 161 if (copyin(user_request->command_buffer, 162 ioctl_cmd->command_buffer, sizeof(ips_generic_cmd))) { 163 free(ioctl_cmd->command_buffer, M_IPSBUF); 164 free(ioctl_cmd, M_IPSBUF); 165 break; 166 } 167 ioctl_cmd->readwrite = IPS_IOCTL_READ | IPS_IOCTL_WRITE; 168 ioctl_cmd->datasize = IPS_IOCTL_BUFFER_SIZE; 169 error = ips_ioctl_cmd(sc, ioctl_cmd, user_request); 170 free(ioctl_cmd->command_buffer, M_IPSBUF); 171 free(ioctl_cmd, M_IPSBUF); 172 break; 173 } 174 return error; 175 } 176