FreeBSD-5.3/usr.sbin/mlxcontrol/interface.c
/*-
* Copyright (c) 1999 Michael Smith
* 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.
*
* $FreeBSD: src/usr.sbin/mlxcontrol/interface.c,v 1.2 2000/04/11 23:04:17 msmith Exp $
*/
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <cam/scsi/scsi_all.h>
#include <dev/mlx/mlxio.h>
#include <dev/mlx/mlxreg.h>
#include "mlxcontrol.h"
/********************************************************************************
* Iterate over all mlx devices, call (func) with each ones' path and (arg)
*/
void
mlx_foreach(void (*func)(int unit, void *arg), void *arg)
{
int i, fd;
/* limit total count for sanity */
for (i = 0; i < 64; i++) {
/* verify we can open it */
if ((fd = open(ctrlrpath(i), 0)) >= 0)
close(fd);
/* if we can, do */
if (fd >= 0) {
func(i, arg);
}
}
}
/********************************************************************************
* Open the controller (unit) and give the fd to (func) along with (arg)
*/
void
mlx_perform(int unit, void (*func)(int fd, void *arg), void *arg)
{
int fd;
if ((fd = open(ctrlrpath(unit), 0)) >= 0) {
func(fd, arg);
close(fd);
}
}
/********************************************************************************
* Iterate over all mlxd devices, call (func) with each ones' path and (arg)
*/
void
mlxd_foreach_ctrlr(int unit, void *arg)
{
struct mlxd_foreach_action *ma = (struct mlxd_foreach_action *)arg;
int i, fd;
/* Get the device */
if ((fd = open(ctrlrpath(unit), 0)) < 0)
return;
for (i = -1; ;) {
/* Get the unit number of the next child device */
if (ioctl(fd, MLX_NEXT_CHILD, &i) < 0)
return;
/* check that we can open this unit */
if ((fd = open(drivepath(i), 0)) >= 0)
close(fd);
/* if we can, do */
if (fd >= 0) {
ma->func(i, ma->arg);
}
}
}
void
mlxd_foreach(void (*func)(int unit, void *arg), void *arg)
{
struct mlxd_foreach_action ma;
ma.func = func;
ma.arg = arg;
mlx_foreach(mlxd_foreach_ctrlr, &ma);
}
/********************************************************************************
* Find the controller that manages the drive (unit), return controller number
* and system drive number on that controller.
*/
static struct
{
int unit;
int ctrlr;
int sysdrive;
} mlxd_find_ctrlr_param;
static void
mlxd_find_ctrlr_search(int unit, void *arg)
{
int i, fd;
/* Get the device */
if ((fd = open(ctrlrpath(unit), 0)) >= 0) {
for (i = -1; ;) {
/* Get the unit number of the next child device */
if (ioctl(fd, MLX_NEXT_CHILD, &i) < 0)
break;
/* is this child the unit we want? */
if (i == mlxd_find_ctrlr_param.unit) {
mlxd_find_ctrlr_param.ctrlr = unit;
if (ioctl(fd, MLX_GET_SYSDRIVE, &i) == 0)
mlxd_find_ctrlr_param.sysdrive = i;
}
}
close(fd);
}
}
int
mlxd_find_ctrlr(int unit, int *ctrlr, int *sysdrive)
{
mlxd_find_ctrlr_param.unit = unit;
mlxd_find_ctrlr_param.ctrlr = -1;
mlxd_find_ctrlr_param.sysdrive = -1;
mlx_foreach(mlxd_find_ctrlr_search, NULL);
if ((mlxd_find_ctrlr_param.ctrlr != -1) && (mlxd_find_ctrlr_param.sysdrive != -1)) {
*ctrlr = mlxd_find_ctrlr_param.ctrlr;
*sysdrive = mlxd_find_ctrlr_param.sysdrive;
return(0);
}
return(1);
}
/********************************************************************************
* Send a command to the controller on (fd)
*/
void
mlx_command(int fd, void *arg)
{
struct mlx_usercommand *cmd = (struct mlx_usercommand *)arg;
int error;
error = ioctl(fd, MLX_COMMAND, cmd);
if (error != 0)
cmd->mu_error = error;
}
/********************************************************************************
* Perform an ENQUIRY2 command and return information related to the controller
* (unit)
*/
int
mlx_enquiry(int unit, struct mlx_enquiry2 *enq)
{
struct mlx_usercommand cmd;
/* build the command */
cmd.mu_datasize = sizeof(*enq);
cmd.mu_buf = enq;
cmd.mu_bufptr = 8;
cmd.mu_command[0] = MLX_CMD_ENQUIRY2;
/* hand it off for processing */
mlx_perform(unit, mlx_command, (void *)&cmd);
return(cmd.mu_status != 0);
}
/********************************************************************************
* Perform a READ CONFIGURATION command and return information related to the controller
* (unit)
*/
int
mlx_read_configuration(int unit, struct mlx_core_cfg *cfg)
{
struct mlx_usercommand cmd;
/* build the command */
cmd.mu_datasize = sizeof(*cfg);
cmd.mu_buf = cfg;
cmd.mu_bufptr = 8;
cmd.mu_command[0] = MLX_CMD_READ_CONFIG;
/* hand it off for processing */
mlx_perform(unit, mlx_command, (void *)&cmd);
return(cmd.mu_status != 0);
}
/********************************************************************************
* Perform a SCSI INQUIRY command and return pointers to the relevant data.
*/
int
mlx_scsi_inquiry(int unit, int channel, int target, char **vendor, char **device, char **revision)
{
struct mlx_usercommand cmd;
static struct {
struct mlx_dcdb dcdb;
union {
struct scsi_inquiry_data inq;
u_int8_t pad[SHORT_INQUIRY_LENGTH];
} d;
} __attribute__ ((packed)) dcdb_cmd;
struct scsi_inquiry *inq_cmd = (struct scsi_inquiry *)&dcdb_cmd.dcdb.dcdb_cdb[0];
/* build the command */
cmd.mu_datasize = sizeof(dcdb_cmd);
cmd.mu_buf = &dcdb_cmd;
cmd.mu_command[0] = MLX_CMD_DIRECT_CDB;
/* build the DCDB */
bzero(&dcdb_cmd, sizeof(dcdb_cmd));
dcdb_cmd.dcdb.dcdb_channel = channel;
dcdb_cmd.dcdb.dcdb_target = target;
dcdb_cmd.dcdb.dcdb_flags = MLX_DCDB_DATA_IN | MLX_DCDB_TIMEOUT_10S;
dcdb_cmd.dcdb.dcdb_datasize = SHORT_INQUIRY_LENGTH;
dcdb_cmd.dcdb.dcdb_cdb_length = 6;
dcdb_cmd.dcdb.dcdb_sense_length = SSD_FULL_SIZE;
/* build the cdb */
inq_cmd->opcode = INQUIRY;
inq_cmd->length = SHORT_INQUIRY_LENGTH;
/* hand it off for processing */
mlx_perform(unit, mlx_command, &cmd);
if (cmd.mu_status == 0) {
*vendor = &dcdb_cmd.d.inq.vendor[0];
*device = &dcdb_cmd.d.inq.product[0];
*revision = &dcdb_cmd.d.inq.revision[0];
}
return(cmd.mu_status);
}
/********************************************************************************
* Perform a GET DEVICE STATE command and return pointers to the relevant data.
*/
int
mlx_get_device_state(int unit, int channel, int target, struct mlx_phys_drv *drv)
{
struct mlx_usercommand cmd;
/* build the command */
cmd.mu_datasize = sizeof(*drv);
cmd.mu_buf = drv;
cmd.mu_bufptr = 8;
cmd.mu_command[0] = MLX_CMD_DEVICE_STATE;
cmd.mu_command[2] = channel;
cmd.mu_command[3] = target;
/* hand it off for processing */
mlx_perform(unit, mlx_command, (void *)&cmd);
return(cmd.mu_status != 0);
}