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 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 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 } 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 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 } 143 144 145 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