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/*-
* Written by: David Jeffery
* Copyright (c) 2002 Adaptec Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <dev/ips/ipsreg.h>
#include <dev/ips/ips.h>
#include <dev/ips/ips_ioctl.h>
static void ips_ioctl_finish(ips_command_t *command)
{
ips_ioctl_t *ioctl_cmd = command->arg;
if(ioctl_cmd->readwrite & IPS_IOCTL_READ){
bus_dmamap_sync(ioctl_cmd->dmatag, ioctl_cmd->dmamap,
BUS_DMASYNC_POSTREAD);
} else if(ioctl_cmd->readwrite & IPS_IOCTL_WRITE){
bus_dmamap_sync(ioctl_cmd->dmatag, ioctl_cmd->dmamap,
BUS_DMASYNC_POSTWRITE);
}
bus_dmamap_sync(command->sc->command_dmatag, command->command_dmamap,
BUS_DMASYNC_POSTWRITE);
bus_dmamap_unload(ioctl_cmd->dmatag, ioctl_cmd->dmamap);
ioctl_cmd->status.value = command->status.value;
ips_insert_free_cmd(command->sc, command);
}
static void ips_ioctl_callback(void *cmdptr, bus_dma_segment_t *segments,int segnum, int error)
{
ips_command_t *command = cmdptr;
ips_ioctl_t *ioctl_cmd = command->arg;
ips_generic_cmd *command_buffer = command->command_buffer;
if(error){
ips_set_error(command, error);
return;
}
command_buffer->id = command->id;
command_buffer->buffaddr = segments[0].ds_addr;
if(ioctl_cmd->readwrite & IPS_IOCTL_WRITE){
bus_dmamap_sync(ioctl_cmd->dmatag, ioctl_cmd->dmamap,
BUS_DMASYNC_PREWRITE);
} else if(ioctl_cmd->readwrite & IPS_IOCTL_READ){
bus_dmamap_sync(ioctl_cmd->dmatag, ioctl_cmd->dmamap,
BUS_DMASYNC_PREREAD);
}
bus_dmamap_sync(command->sc->command_dmatag, command->command_dmamap,
BUS_DMASYNC_PREWRITE);
command->sc->ips_issue_cmd(command);
}
static int ips_ioctl_start(ips_command_t *command)
{
ips_ioctl_t *ioctl_cmd = command->arg;
memcpy(command->command_buffer, ioctl_cmd->command_buffer,
sizeof(ips_generic_cmd));
command->callback = ips_ioctl_finish;
bus_dmamap_load(ioctl_cmd->dmatag, ioctl_cmd->dmamap,
ioctl_cmd->data_buffer,ioctl_cmd->datasize,
ips_ioctl_callback, command, 0);
return 0;
}
static int ips_ioctl_cmd(ips_softc_t *sc, ips_ioctl_t *ioctl_cmd, ips_user_request *user_request)
{
ips_command_t *command;
int error = EINVAL;
if (bus_dma_tag_create( /* parent */ sc->adapter_dmatag,
/* alignment */ 1,
/* boundary */ 0,
/* lowaddr */ BUS_SPACE_MAXADDR_32BIT,
/* highaddr */ BUS_SPACE_MAXADDR,
/* filter */ NULL,
/* filterarg */ NULL,
/* maxsize */ ioctl_cmd->datasize,
/* numsegs */ 1,
/* maxsegsize*/ ioctl_cmd->datasize,
/* flags */ 0,
/* lockfunc */ NULL,
/* lockarg */ NULL,
&ioctl_cmd->dmatag) != 0) {
return ENOMEM;
}
if(bus_dmamem_alloc(ioctl_cmd->dmatag, &ioctl_cmd->data_buffer,
0, &ioctl_cmd->dmamap)){
error = ENOMEM;
goto exit;
}
if(copyin(user_request->data_buffer,ioctl_cmd->data_buffer,
ioctl_cmd->datasize))
goto exit;
ioctl_cmd->status.value = 0xffffffff;
mtx_lock(&sc->queue_mtx);
if((error = ips_get_free_cmd(sc, &command, 0)) > 0){
error = ENOMEM;
mtx_unlock(&sc->queue_mtx);
goto exit;
}
command->arg = ioctl_cmd;
ips_ioctl_start(command);
while( ioctl_cmd->status.value == 0xffffffff)
msleep(ioctl_cmd, &sc->queue_mtx, 0, "ips", hz/10);
if(COMMAND_ERROR(ioctl_cmd))
error = EIO;
else
error = 0;
mtx_unlock(&sc->queue_mtx);
if(copyout(ioctl_cmd->data_buffer, user_request->data_buffer,
ioctl_cmd->datasize))
error = EINVAL;
mtx_lock(&sc->queue_mtx);
ips_insert_free_cmd(sc, command);
mtx_unlock(&sc->queue_mtx);
exit: bus_dmamem_free(ioctl_cmd->dmatag, ioctl_cmd->data_buffer,
ioctl_cmd->dmamap);
bus_dma_tag_destroy(ioctl_cmd->dmatag);
return error;
}
int ips_ioctl_request(ips_softc_t *sc, u_long ioctl_request, caddr_t addr, int32_t flags){
int error = EINVAL;
ips_ioctl_t *ioctl_cmd;
ips_user_request *user_request;
switch(ioctl_request){
case IPS_USER_CMD:
user_request = (ips_user_request *)addr;
ioctl_cmd = malloc(sizeof(ips_ioctl_t), M_IPSBUF, M_WAITOK);
ioctl_cmd->command_buffer = malloc(sizeof(ips_generic_cmd),
M_IPSBUF, M_WAITOK);
if(copyin(user_request->command_buffer,
ioctl_cmd->command_buffer, sizeof(ips_generic_cmd))){
free(ioctl_cmd->command_buffer, M_IPSBUF);
free(ioctl_cmd, M_IPSBUF);
break;
}
ioctl_cmd->readwrite = IPS_IOCTL_READ | IPS_IOCTL_WRITE;
ioctl_cmd->datasize = IPS_IOCTL_BUFFER_SIZE;
error = ips_ioctl_cmd(sc, ioctl_cmd, user_request);
free(ioctl_cmd->command_buffer, M_IPSBUF);
free(ioctl_cmd, M_IPSBUF);
break;
}
return error;
}
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