1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 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 __FBSDID("$FreeBSD$"); 32 33 #include <dev/ips/ipsreg.h> 34 #include <dev/ips/ips.h> 35 #include <dev/ips/ips_ioctl.h> 36 37 static void ips_ioctl_finish(ips_command_t *command) 38 { 39 ips_ioctl_t *ioctl_cmd = command->arg; 40 if(ioctl_cmd->readwrite & IPS_IOCTL_READ){ 41 bus_dmamap_sync(ioctl_cmd->dmatag, ioctl_cmd->dmamap, 42 BUS_DMASYNC_POSTREAD); 43 } else if(ioctl_cmd->readwrite & IPS_IOCTL_WRITE){ 44 bus_dmamap_sync(ioctl_cmd->dmatag, ioctl_cmd->dmamap, 45 BUS_DMASYNC_POSTWRITE); 46 } 47 bus_dmamap_sync(command->sc->command_dmatag, command->command_dmamap, 48 BUS_DMASYNC_POSTWRITE); 49 bus_dmamap_unload(ioctl_cmd->dmatag, ioctl_cmd->dmamap); 50 ioctl_cmd->status.value = command->status.value; 51 ips_insert_free_cmd(command->sc, command); 52 } 53 54 static void ips_ioctl_callback(void *cmdptr, bus_dma_segment_t *segments,int segnum, int error) 55 { 56 ips_command_t *command = cmdptr; 57 ips_ioctl_t *ioctl_cmd = command->arg; 58 ips_generic_cmd *command_buffer = command->command_buffer; 59 if(error){ 60 ips_set_error(command, error); 61 return; 62 } 63 command_buffer->id = command->id; 64 command_buffer->buffaddr = segments[0].ds_addr; 65 if(ioctl_cmd->readwrite & IPS_IOCTL_WRITE){ 66 bus_dmamap_sync(ioctl_cmd->dmatag, ioctl_cmd->dmamap, 67 BUS_DMASYNC_PREWRITE); 68 } else if(ioctl_cmd->readwrite & IPS_IOCTL_READ){ 69 bus_dmamap_sync(ioctl_cmd->dmatag, ioctl_cmd->dmamap, 70 BUS_DMASYNC_PREREAD); 71 } 72 bus_dmamap_sync(command->sc->command_dmatag, command->command_dmamap, 73 BUS_DMASYNC_PREWRITE); 74 command->sc->ips_issue_cmd(command); 75 } 76 static int ips_ioctl_start(ips_command_t *command) 77 { 78 ips_ioctl_t *ioctl_cmd = command->arg; 79 memcpy(command->command_buffer, ioctl_cmd->command_buffer, 80 sizeof(ips_generic_cmd)); 81 command->callback = ips_ioctl_finish; 82 bus_dmamap_load(ioctl_cmd->dmatag, ioctl_cmd->dmamap, 83 ioctl_cmd->data_buffer,ioctl_cmd->datasize, 84 ips_ioctl_callback, command, 0); 85 return 0; 86 } 87 88 static int ips_ioctl_cmd(ips_softc_t *sc, ips_ioctl_t *ioctl_cmd, ips_user_request *user_request) 89 { 90 ips_command_t *command; 91 int error = EINVAL; 92 93 if (bus_dma_tag_create( /* parent */ sc->adapter_dmatag, 94 /* alignment */ 1, 95 /* boundary */ 0, 96 /* lowaddr */ BUS_SPACE_MAXADDR_32BIT, 97 /* highaddr */ BUS_SPACE_MAXADDR, 98 /* filter */ NULL, 99 /* filterarg */ NULL, 100 /* maxsize */ ioctl_cmd->datasize, 101 /* numsegs */ 1, 102 /* maxsegsize*/ ioctl_cmd->datasize, 103 /* flags */ 0, 104 /* lockfunc */ NULL, 105 /* lockarg */ NULL, 106 &ioctl_cmd->dmatag) != 0) { 107 return ENOMEM; 108 } 109 if(bus_dmamem_alloc(ioctl_cmd->dmatag, &ioctl_cmd->data_buffer, 110 0, &ioctl_cmd->dmamap)){ 111 error = ENOMEM; 112 goto exit; 113 } 114 if(copyin(user_request->data_buffer,ioctl_cmd->data_buffer, 115 ioctl_cmd->datasize)) 116 goto exit; 117 ioctl_cmd->status.value = 0xffffffff; 118 mtx_lock(&sc->queue_mtx); 119 if((error = ips_get_free_cmd(sc, &command, 0)) > 0){ 120 error = ENOMEM; 121 mtx_unlock(&sc->queue_mtx); 122 goto exit; 123 } 124 command->arg = ioctl_cmd; 125 ips_ioctl_start(command); 126 while( ioctl_cmd->status.value == 0xffffffff) 127 msleep(ioctl_cmd, &sc->queue_mtx, 0, "ips", hz/10); 128 if(COMMAND_ERROR(ioctl_cmd)) 129 error = EIO; 130 else 131 error = 0; 132 mtx_unlock(&sc->queue_mtx); 133 if(copyout(ioctl_cmd->data_buffer, user_request->data_buffer, 134 ioctl_cmd->datasize)) 135 error = EINVAL; 136 mtx_lock(&sc->queue_mtx); 137 ips_insert_free_cmd(sc, command); 138 mtx_unlock(&sc->queue_mtx); 139 140 exit: bus_dmamem_free(ioctl_cmd->dmatag, ioctl_cmd->data_buffer, 141 ioctl_cmd->dmamap); 142 bus_dma_tag_destroy(ioctl_cmd->dmatag); 143 return error; 144 } 145 146 147 int ips_ioctl_request(ips_softc_t *sc, u_long ioctl_request, caddr_t addr, int32_t flags){ 148 int error = EINVAL; 149 ips_ioctl_t *ioctl_cmd; 150 ips_user_request *user_request; 151 switch(ioctl_request){ 152 case IPS_USER_CMD: 153 user_request = (ips_user_request *)addr; 154 ioctl_cmd = malloc(sizeof(ips_ioctl_t), M_IPSBUF, M_WAITOK); 155 ioctl_cmd->command_buffer = malloc(sizeof(ips_generic_cmd), 156 M_IPSBUF, M_WAITOK); 157 if(copyin(user_request->command_buffer, 158 ioctl_cmd->command_buffer, sizeof(ips_generic_cmd))){ 159 free(ioctl_cmd->command_buffer, M_IPSBUF); 160 free(ioctl_cmd, M_IPSBUF); 161 break; 162 } 163 ioctl_cmd->readwrite = IPS_IOCTL_READ | IPS_IOCTL_WRITE; 164 ioctl_cmd->datasize = IPS_IOCTL_BUFFER_SIZE; 165 error = ips_ioctl_cmd(sc, ioctl_cmd, user_request); 166 free(ioctl_cmd->command_buffer, M_IPSBUF); 167 free(ioctl_cmd, M_IPSBUF); 168 break; 169 } 170 171 return error; 172 } 173