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288 lines
7.9 KiB
C
288 lines
7.9 KiB
C
/*-
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* Copyright (c) 1999 Michael Smith
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <cam/scsi/scsi_all.h>
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#include <dev/mlx/mlxio.h>
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#include <dev/mlx/mlxreg.h>
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#include "mlxcontrol.h"
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/********************************************************************************
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* Iterate over all mlx devices, call (func) with each ones' path and (arg)
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*/
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void
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mlx_foreach(void (*func)(int unit, void *arg), void *arg)
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{
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int i, fd;
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/* limit total count for sanity */
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for (i = 0; i < 64; i++) {
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/* verify we can open it */
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if ((fd = open(ctrlrpath(i), 0)) >= 0)
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close(fd);
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/* if we can, do */
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if (fd >= 0) {
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func(i, arg);
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}
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}
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}
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/********************************************************************************
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* Open the controller (unit) and give the fd to (func) along with (arg)
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*/
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void
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mlx_perform(int unit, void (*func)(int fd, void *arg), void *arg)
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{
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int fd;
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if ((fd = open(ctrlrpath(unit), 0)) >= 0) {
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func(fd, arg);
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close(fd);
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}
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}
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/********************************************************************************
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* Iterate over all mlxd devices, call (func) with each ones' path and (arg)
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*/
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void
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mlxd_foreach_ctrlr(int unit, void *arg)
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{
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struct mlxd_foreach_action *ma = (struct mlxd_foreach_action *)arg;
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int i, fd;
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/* Get the device */
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if ((fd = open(ctrlrpath(unit), 0)) < 0)
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return;
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for (i = -1; ;) {
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/* Get the unit number of the next child device */
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if (ioctl(fd, MLX_NEXT_CHILD, &i) < 0)
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return;
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/* check that we can open this unit */
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if ((fd = open(drivepath(i), 0)) >= 0)
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close(fd);
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/* if we can, do */
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if (fd >= 0) {
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ma->func(i, ma->arg);
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}
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}
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}
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void
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mlxd_foreach(void (*func)(int unit, void *arg), void *arg)
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{
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struct mlxd_foreach_action ma;
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ma.func = func;
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ma.arg = arg;
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mlx_foreach(mlxd_foreach_ctrlr, &ma);
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}
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/********************************************************************************
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* Find the controller that manages the drive (unit), return controller number
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* and system drive number on that controller.
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*/
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static struct
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{
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int unit;
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int ctrlr;
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int sysdrive;
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} mlxd_find_ctrlr_param;
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static void
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mlxd_find_ctrlr_search(int unit, void *arg)
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{
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int i, fd;
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/* Get the device */
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if ((fd = open(ctrlrpath(unit), 0)) >= 0) {
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for (i = -1; ;) {
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/* Get the unit number of the next child device */
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if (ioctl(fd, MLX_NEXT_CHILD, &i) < 0)
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break;
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/* is this child the unit we want? */
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if (i == mlxd_find_ctrlr_param.unit) {
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mlxd_find_ctrlr_param.ctrlr = unit;
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if (ioctl(fd, MLX_GET_SYSDRIVE, &i) == 0)
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mlxd_find_ctrlr_param.sysdrive = i;
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}
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}
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close(fd);
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}
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}
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int
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mlxd_find_ctrlr(int unit, int *ctrlr, int *sysdrive)
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{
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mlxd_find_ctrlr_param.unit = unit;
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mlxd_find_ctrlr_param.ctrlr = -1;
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mlxd_find_ctrlr_param.sysdrive = -1;
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mlx_foreach(mlxd_find_ctrlr_search, NULL);
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if ((mlxd_find_ctrlr_param.ctrlr != -1) && (mlxd_find_ctrlr_param.sysdrive != -1)) {
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*ctrlr = mlxd_find_ctrlr_param.ctrlr;
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*sysdrive = mlxd_find_ctrlr_param.sysdrive;
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return(0);
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}
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return(1);
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}
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/********************************************************************************
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* Send a command to the controller on (fd)
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*/
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void
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mlx_command(int fd, void *arg)
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{
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struct mlx_usercommand *cmd = (struct mlx_usercommand *)arg;
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int error;
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error = ioctl(fd, MLX_COMMAND, cmd);
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if (error != 0)
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cmd->mu_error = error;
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}
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/********************************************************************************
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* Perform an ENQUIRY2 command and return information related to the controller
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* (unit)
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*/
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int
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mlx_enquiry(int unit, struct mlx_enquiry2 *enq)
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{
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struct mlx_usercommand cmd;
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/* build the command */
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cmd.mu_datasize = sizeof(*enq);
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cmd.mu_buf = enq;
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cmd.mu_bufptr = 8;
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cmd.mu_command[0] = MLX_CMD_ENQUIRY2;
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/* hand it off for processing */
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mlx_perform(unit, mlx_command, (void *)&cmd);
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return(cmd.mu_status != 0);
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}
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/********************************************************************************
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* Perform a READ CONFIGURATION command and return information related to the controller
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* (unit)
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*/
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int
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mlx_read_configuration(int unit, struct mlx_core_cfg *cfg)
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{
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struct mlx_usercommand cmd;
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/* build the command */
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cmd.mu_datasize = sizeof(*cfg);
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cmd.mu_buf = cfg;
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cmd.mu_bufptr = 8;
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cmd.mu_command[0] = MLX_CMD_READ_CONFIG;
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/* hand it off for processing */
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mlx_perform(unit, mlx_command, (void *)&cmd);
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return(cmd.mu_status != 0);
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}
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/********************************************************************************
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* Perform a SCSI INQUIRY command and return pointers to the relevant data.
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*/
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int
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mlx_scsi_inquiry(int unit, int channel, int target, char **vendor, char **device, char **revision)
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{
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struct mlx_usercommand cmd;
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static struct {
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struct mlx_dcdb dcdb;
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union {
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struct scsi_inquiry_data inq;
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u_int8_t pad[SHORT_INQUIRY_LENGTH];
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} d;
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} __attribute__ ((packed)) dcdb_cmd;
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struct scsi_inquiry *inq_cmd = (struct scsi_inquiry *)&dcdb_cmd.dcdb.dcdb_cdb[0];
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/* build the command */
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cmd.mu_datasize = sizeof(dcdb_cmd);
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cmd.mu_buf = &dcdb_cmd;
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cmd.mu_command[0] = MLX_CMD_DIRECT_CDB;
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/* build the DCDB */
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bzero(&dcdb_cmd, sizeof(dcdb_cmd));
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dcdb_cmd.dcdb.dcdb_channel = channel;
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dcdb_cmd.dcdb.dcdb_target = target;
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dcdb_cmd.dcdb.dcdb_flags = MLX_DCDB_DATA_IN | MLX_DCDB_TIMEOUT_10S;
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dcdb_cmd.dcdb.dcdb_datasize = SHORT_INQUIRY_LENGTH;
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dcdb_cmd.dcdb.dcdb_cdb_length = 6;
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dcdb_cmd.dcdb.dcdb_sense_length = SSD_FULL_SIZE;
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/* build the cdb */
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inq_cmd->opcode = INQUIRY;
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inq_cmd->length = SHORT_INQUIRY_LENGTH;
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/* hand it off for processing */
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mlx_perform(unit, mlx_command, &cmd);
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if (cmd.mu_status == 0) {
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*vendor = &dcdb_cmd.d.inq.vendor[0];
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*device = &dcdb_cmd.d.inq.product[0];
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*revision = &dcdb_cmd.d.inq.revision[0];
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}
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return(cmd.mu_status);
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}
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/********************************************************************************
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* Perform a GET DEVICE STATE command and return pointers to the relevant data.
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*/
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int
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mlx_get_device_state(int unit, int channel, int target, struct mlx_phys_drv *drv)
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{
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struct mlx_usercommand cmd;
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/* build the command */
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cmd.mu_datasize = sizeof(*drv);
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cmd.mu_buf = drv;
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cmd.mu_bufptr = 8;
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cmd.mu_command[0] = MLX_CMD_DEVICE_STATE;
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cmd.mu_command[2] = channel;
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cmd.mu_command[3] = target;
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/* hand it off for processing */
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mlx_perform(unit, mlx_command, (void *)&cmd);
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return(cmd.mu_status != 0);
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}
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