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 28 #include <sys/cdefs.h> 29 __FBSDID("$FreeBSD$"); 30 31 #include <dev/ips/ips.h> 32 #include <dev/ips/ips_ioctl.h> 33 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 90 if (bus_dma_tag_create( /* parent */ sc->adapter_dmatag, 91 /* alignment */ 1, 92 /* boundary */ 0, 93 /* lowaddr */ BUS_SPACE_MAXADDR_32BIT, 94 /* highaddr */ BUS_SPACE_MAXADDR, 95 /* filter */ NULL, 96 /* filterarg */ NULL, 97 /* maxsize */ ioctl_cmd->datasize, 98 /* numsegs */ 1, 99 /* maxsegsize*/ ioctl_cmd->datasize, 100 /* flags */ 0, 101 /* lockfunc */ busdma_lock_mutex, 102 /* lockarg */ &Giant, 103 &ioctl_cmd->dmatag) != 0) { 104 return ENOMEM; 105 } 106 if(bus_dmamem_alloc(ioctl_cmd->dmatag, &ioctl_cmd->data_buffer, 107 0, &ioctl_cmd->dmamap)){ 108 error = ENOMEM; 109 goto exit; 110 } 111 if(copyin(user_request->data_buffer,ioctl_cmd->data_buffer, 112 ioctl_cmd->datasize)) 113 goto exit; 114 ioctl_cmd->status.value = 0xffffffff; 115 if((error = ips_get_free_cmd(sc, ips_ioctl_start, ioctl_cmd,0)) > 0){ 116 error = ENOMEM; 117 goto exit; 118 } 119 while( ioctl_cmd->status.value == 0xffffffff) 120 tsleep(ioctl_cmd, 0, "ips", hz/10); 121 if(COMMAND_ERROR(&ioctl_cmd->status)) 122 error = EIO; 123 else 124 error = 0; 125 if(copyout(ioctl_cmd->data_buffer, user_request->data_buffer, 126 ioctl_cmd->datasize)) 127 error = EINVAL; 128 exit: bus_dmamem_free(ioctl_cmd->dmatag, ioctl_cmd->data_buffer, 129 ioctl_cmd->dmamap); 130 bus_dma_tag_destroy(ioctl_cmd->dmatag); 131 return error; 132 } 133 134 135 int ips_ioctl_request(ips_softc_t *sc, u_long ioctl_request, caddr_t addr, int32_t flags){ 136 int error = EINVAL; 137 ips_ioctl_t *ioctl_cmd; 138 ips_user_request *user_request; 139 switch(ioctl_request){ 140 case IPS_USER_CMD: 141 user_request = (ips_user_request *)addr; 142 ioctl_cmd = malloc(sizeof(ips_ioctl_t), M_IPSBUF, M_WAITOK); 143 ioctl_cmd->command_buffer = malloc(sizeof(ips_generic_cmd), 144 M_IPSBUF, M_WAITOK); 145 if(copyin(user_request->command_buffer, 146 ioctl_cmd->command_buffer, sizeof(ips_generic_cmd))){ 147 free(ioctl_cmd->command_buffer, M_IPSBUF); 148 free(ioctl_cmd, M_IPSBUF); 149 break; 150 } 151 ioctl_cmd->readwrite = IPS_IOCTL_READ | IPS_IOCTL_WRITE; 152 ioctl_cmd->datasize = IPS_IOCTL_BUFFER_SIZE; 153 error = ips_ioctl_cmd(sc, ioctl_cmd, user_request); 154 free(ioctl_cmd->command_buffer, M_IPSBUF); 155 free(ioctl_cmd, M_IPSBUF); 156 break; 157 } 158 159 return error; 160 } 161