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 * $FreeBSD$ 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 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 &ioctl_cmd->dmatag) != 0) { 102 return ENOMEM; 103 } 104 if(bus_dmamem_alloc(ioctl_cmd->dmatag, &ioctl_cmd->data_buffer, 105 0, &ioctl_cmd->dmamap)){ 106 error = ENOMEM; 107 goto exit; 108 } 109 if(copyin(user_request->data_buffer,ioctl_cmd->data_buffer, 110 ioctl_cmd->datasize)) 111 goto exit; 112 ioctl_cmd->status.value = 0xffffffff; 113 if((error = ips_get_free_cmd(sc, ips_ioctl_start, ioctl_cmd,0)) > 0){ 114 error = ENOMEM; 115 goto exit; 116 } 117 while( ioctl_cmd->status.value == 0xffffffff) 118 tsleep(ioctl_cmd, 0, "ips", hz/10); 119 if(COMMAND_ERROR(&ioctl_cmd->status)) 120 error = EIO; 121 else 122 error = 0; 123 if(copyout(ioctl_cmd->data_buffer, user_request->data_buffer, 124 ioctl_cmd->datasize)) 125 error = EINVAL; 126 exit: bus_dmamem_free(ioctl_cmd->dmatag, ioctl_cmd->data_buffer, 127 ioctl_cmd->dmamap); 128 bus_dma_tag_destroy(ioctl_cmd->dmatag); 129 return error; 130 } 131 132 133 int ips_ioctl_request(ips_softc_t *sc, u_long ioctl_request, caddr_t addr, int32_t flags){ 134 int error = EINVAL; 135 ips_ioctl_t *ioctl_cmd; 136 ips_user_request *user_request; 137 switch(ioctl_request){ 138 case IPS_USER_CMD: 139 user_request = (ips_user_request *)addr; 140 ioctl_cmd = malloc(sizeof(ips_ioctl_t), M_DEVBUF, M_WAITOK); 141 ioctl_cmd->command_buffer = malloc(sizeof(ips_generic_cmd), 142 M_DEVBUF, M_WAITOK); 143 if(copyin(user_request->command_buffer, 144 ioctl_cmd->command_buffer, sizeof(ips_generic_cmd))){ 145 free(ioctl_cmd->command_buffer, M_DEVBUF); 146 free(ioctl_cmd, M_DEVBUF); 147 break; 148 } 149 ioctl_cmd->readwrite = IPS_IOCTL_READ | IPS_IOCTL_WRITE; 150 ioctl_cmd->datasize = IPS_IOCTL_BUFFER_SIZE; 151 error = ips_ioctl_cmd(sc, ioctl_cmd, user_request); 152 free(ioctl_cmd->command_buffer, M_DEVBUF); 153 free(ioctl_cmd, M_DEVBUF); 154 break; 155 } 156 157 return error; 158 } 159