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478 lines
13 KiB
C
478 lines
13 KiB
C
/***************************************************
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* file: userconfig/uc_scsi.c
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*
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* Copyright (c) 1996 Eric L. Hernes (erich@rrnet.com)
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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. The name of the author may not be used to endorse or promote products
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* derived from this software withough specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $Id$
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*/
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#include <sys/types.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <nlist.h>
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#include <scsi/scsiconf.h>
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#include "uc_main.h"
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/* this stuff is hidden under an #ifdef KERNEL in scsiconf.h */
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#define SCCONF_UNSPEC 255
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#define SCCONF_ANY 254
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struct scsi_ctlr_config {
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int scbus;
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char *driver;
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int unit;
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int bus;
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};
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struct scsi_device_config {
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char *name; /* SCSI device name (sd, st, etc) */
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int unit; /* desired device unit */
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int cunit; /* Controller unit */
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int target; /* SCSI ID (target) */
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int lun; /* SCSI lun */
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int flags; /* Flags from config */
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};
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/* module prototypes */
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static void get_sl_info(struct kernel *kp, struct uc_scsi *spc,
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struct scsi_link *sl);
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void
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get_scsi_info(struct kernel *kp){
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int i, j, k;
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if(kp->incore){
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if (kp->nl[SCSI_BUSSES].n_value) {
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u_int *es, *sba;
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struct scsibus_data *sbd;
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int nsbd, nscsibus, total;
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struct uc_scsi *sp, *spc;
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struct uc_scsibus *sbp, *sbpc;
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struct scsi_link *s_l;
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u_int *slp;
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char *temp;
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struct scsi_device *sdev;
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u_int t;
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char name[10];
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sp=(struct uc_scsi*)malloc(sizeof(struct uc_scsi));
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total=0;
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sbp=(struct uc_scsibus*)malloc(sizeof(struct uc_scsibus));
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nscsibus=0;
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es=(u_int *)kv_to_u(kp, kv_dref_p(kp,kp->nl[SCSI_BUSSES].n_value),
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sizeof(u_int)*2);
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nsbd=es[0];
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sba=(u_int *)kv_to_u(kp, es[1], sizeof(u_int)*nsbd);
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free(es);
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for(i=0;i<nsbd;i++){
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if(sba[i]){
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/* first grab the adapter info */
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sbd=(struct scsibus_data *)kv_to_u(kp, sba[i],
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sizeof(struct scsibus_data));
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sbp=(struct uc_scsibus *)realloc(sbp, sizeof(struct uc_scsibus)*
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(nscsibus+1));
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sp=(struct uc_scsi*)realloc(sp, (sizeof(struct uc_scsi)*(total+1)));
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spc=sp+total;
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s_l=(struct scsi_link*)kv_to_u(kp, (u_int)sbd->adapter_link,
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sizeof(struct scsi_link));
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get_sl_info(kp, spc, s_l);
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free(s_l);
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sbpc=sbp+nscsibus;
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sbpc->bus_no=nscsibus;
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nscsibus++;
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sscanf(spc->device, "%[a-z]%d", name, &sbpc->unit);
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asprintf(&sbpc->driver, "%s", name);
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total++;
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t=kv_dref_p(kp, (u_int)sbd->sc_link);
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t=(u_int)sbd->sc_link;
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for(j=0;j<8;j++) {
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slp=(u_int *)kv_to_u(kp, t+(j*8*sizeof(u_int)), /* XXX */
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(sizeof(u_int)*sbd->maxlun));
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for(k=0;k<sbd->maxlun && slp[k]; k++){
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struct scsi_link *slt;
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sp=(struct uc_scsi*)realloc(sp,
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(sizeof(struct uc_scsi)*(total+1)));
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spc=sp+total;
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slt=(struct scsi_link*)kv_to_u(kp, slp[k],
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sizeof(struct scsi_link));
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get_sl_info(kp, spc, slt);
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free(slt);
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spc->config=(struct scsi_device_config *)0;
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total++;
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}
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free(slp);
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}
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free(sbd);
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}
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}
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/* now stuff in the list of drivers configured in the system */
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t=kv_dref_p(kp, kp->nl[SCSI_LIST].n_value);
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while(t) {
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sdev=(struct scsi_device*)kv_to_u(kp, t, sizeof(struct scsi_device));
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sp=(struct uc_scsi*)realloc(sp, (sizeof(struct uc_scsi)*(total+1)));
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spc=sp+total;
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total++;
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temp=(char *)kv_to_u(kp, (u_int)sdev->name, 10);
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asprintf(&spc->device, "%s*", temp);
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free(temp);
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asprintf(&spc->adapter, "any");
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spc->target=SCCONF_ANY;
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spc->lun=SCCONF_ANY;
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temp=(char *)kv_to_u(kp, (u_int)sdev->desc, 20);
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asprintf(&spc->desc, "%s", temp);
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free(temp);
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spc->config=(struct scsi_device_config *)0;
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t=(u_int)sdev->next;
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free(sdev);
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}
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/* slap on the terminators */
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sp=(struct uc_scsi*)realloc(sp, (sizeof(struct uc_scsi)*(total+1)));
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spc=sp+total;
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bzero(spc, sizeof(struct uc_scsi));
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sbp=(struct uc_scsibus *)realloc(sbp, sizeof(struct uc_scsibus)*
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(nscsibus+1));
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sbpc=sbp+nscsibus;
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bzero(sbpc, sizeof(struct uc_scsibus));
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kp->scsi_devp=sp;
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kp->scsibus_devp=sbp;
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} else { /* no symbol, and incore, no scsi */
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kp->scsi_devp=(struct uc_scsi *)0;
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kp->scsibus_devp=(struct uc_scsibus *)0;
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}
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} else { /* on disk */
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if (kp->nl[SCSI_CINIT].n_value || kp->nl[SCSI_DINIT].n_value ||
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kp->nl[SCSI_TINIT].n_value) {
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int total=0;
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struct uc_scsi *sp, *spc;
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struct scsi_ctlr_config *sctl_c;
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struct scsi_device_config *sdev_c;
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struct scsi_device *sdev;
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struct uc_scsibus *uc_scbus, *uc_scbusc;
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u_int t, ctrl_total;
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char *temp;
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u_int initp;
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spc=sp=(struct uc_scsi*)malloc(sizeof(struct uc_scsi));
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total=0;
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ctrl_total=0;
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uc_scbus = NULL; /* Just prevent unused warning */
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/* static kernel, we'll first get the wired controllers/devices */
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if((t=kp->nl[SCSI_CINIT].n_value)){
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/* get controller info*/
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sctl_c=(struct scsi_ctlr_config*)kv_to_u(kp, t, sizeof(struct scsi_ctlr_config));
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uc_scbus=(struct uc_scsibus*)malloc(sizeof(struct uc_scsibus));
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while(sctl_c->driver){
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/* remember the bus info, for later */
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uc_scbus=(struct uc_scsibus*)realloc(uc_scbus, sizeof(struct uc_scsibus)*(ctrl_total+1));
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uc_scbusc=uc_scbus+ctrl_total;
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uc_scbusc->bus_no=sctl_c->scbus;
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temp=(char *)kv_to_u(kp, (u_int)sctl_c->driver, 20);
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uc_scbusc->driver=temp;
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uc_scbusc->unit=sctl_c->unit;
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uc_scbusc->config=sctl_c;
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sp=(struct uc_scsi*)realloc(sp,sizeof(struct uc_scsi)*(total+1));
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spc=sp+total;
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asprintf(&spc->device, "%s%d", temp, sctl_c->unit);
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asprintf(&spc->adapter, "%s%d", temp, sctl_c->unit);
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spc->target=0;
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spc->lun=0;
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spc->modified=0;
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asprintf(&spc->desc, "%s", temp);
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total++;
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ctrl_total++;
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sctl_c++;
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}
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}
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if((t=kp->nl[SCSI_DINIT].n_value)){
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/* get wired device info */
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sdev_c=(struct scsi_device_config*)kv_to_u(kp, t, sizeof(struct scsi_device_config));
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while(sdev_c->name){
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sp=(struct uc_scsi*)realloc(sp, sizeof(struct uc_scsi)*(total+1));
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spc=sp+total;
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temp=(char*)kv_to_u(kp, (u_int)sdev_c->name, 10);
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asprintf(&spc->device, "%s%d", temp, sdev_c->unit);
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/* figure out controller */
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if(sdev_c->cunit == SCCONF_ANY){
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asprintf(&spc->adapter, "any");
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} else {
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if(ctrl_total){
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for(i=0;i<ctrl_total;i++){
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if(sdev_c->cunit==uc_scbus[i].bus_no){
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asprintf(&spc->adapter, "%s%d",
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uc_scbus[i].driver, uc_scbus[i].unit);
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break;
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}
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}
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if(i==ctrl_total) { /* made it through the whole list */
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asprintf(&spc->adapter, "any?");
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}
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} else {
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asprintf(&spc->adapter, "any?");
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}
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}
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spc->target= sdev_c->target;
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spc->lun= sdev_c->lun;
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spc->desc=(char *)0; /* filled in later */
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spc->config=sdev_c;
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spc->modified=0;
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sdev_c++;
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total++;
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}
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}
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kp->scsibus_devp=uc_scbus;
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if((t=kp->nl[SCSI_TINIT].n_value)) {
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/* WARNING: This is teetering on the brink of stupid.
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this ugly little hack only works because the
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<scsi driver>init routines are macro-generated,
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so the offset of the device pointers will be
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the same (hopefully).
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*/
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while((initp=kv_dref_p(kp,t))) {
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u_int tadr;
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u_int sl;
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t+=4;
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tadr=kv_dref_t(kp, initp+4); /* offset in *.text* */
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sdev=(struct scsi_device*)kv_to_u(kp, tadr, sizeof(struct scsi_device));
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sp=(struct uc_scsi*)realloc(sp, (sizeof(struct uc_scsi)*(total+1)));
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spc=sp+total;
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total++;
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temp=(char *)kv_to_u(kp, (u_int)sdev->name, 10);
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asprintf(&spc->device, "%s*", temp);
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asprintf(&spc->adapter, "any");
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spc->target=SCCONF_ANY;
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spc->lun=SCCONF_ANY;
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spc->modified=0;
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temp=(char *)kv_to_u(kp, (u_int)sdev->desc, 20);
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asprintf(&spc->desc, "%s", temp);
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/* now try to fill in any device descriptions from above */
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sl=strlen(spc->device)-1;
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for(i=0;i<(total-1);i++){ /* don't look at this device */
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struct uc_scsi *usp;
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usp=sp+i;
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if(strncmp(usp->device, spc->device, sl)==0 && usp->desc==0) {
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asprintf(&usp->desc, "%s", spc->desc);
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}
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}
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}
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if(total){
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sp=(struct uc_scsi*)realloc(sp, (sizeof(struct uc_scsi)*(total+1)));
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spc=sp+total;
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bzero(spc, sizeof(struct uc_scsi));
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kp->scsi_devp=sp;
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} else {
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free(sp);
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kp->scsi_devp=(struct uc_scsi *)0;
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}
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}
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} else {
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kp->scsi_devp=(struct uc_scsi *)0;
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}
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}
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}
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struct list *
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get_scsi_devlist(struct kernel *kp){
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struct list *dl;
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struct uc_scsi *kdp;
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dl=list_new();
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for(kdp=kp->scsi_devp; kdp->device; kdp++){
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list_append(dl, kdp->device);
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}
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return(dl);
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}
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struct list *
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get_scsi_device(struct uc_scsi *sp){
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struct list *list;
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char *tmp;
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list=list_new();
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list_append(list, sp->device);
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list_append(list, sp->adapter);
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asprintf(&tmp, "%d", sp->target );
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list_append(list, tmp);
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free(tmp);
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asprintf(&tmp, "%d", sp->lun );
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list_append(list, tmp);
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free(tmp);
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list_append(list, sp->desc);
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return(list);
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}
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/* given a scsi_link and a uc_scsi pointer, fill it in */
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static void
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get_sl_info(struct kernel *kp, struct uc_scsi *spc, struct scsi_link *sl){
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struct scsi_adapter *sadp;
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struct scsi_device *sdev;
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char *temp;
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sadp=(struct scsi_adapter*)kv_to_u(kp, (u_int)sl->adapter,
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sizeof(struct scsi_adapter));
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sdev=(struct scsi_device*)kv_to_u(kp, (u_int)sl->device,
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sizeof(struct scsi_device));
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temp=(char *)kv_to_u(kp, (u_int)sdev->name, 20);
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asprintf(&spc->device, "%s%d", temp, sl->dev_unit);
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free(temp);
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temp=(char *)kv_to_u(kp, (u_int)sadp->name, 20);
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asprintf(&spc->adapter, "%s%d", temp, sl->adapter_unit);
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free(temp);
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spc->target = sl->target;
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spc->lun = sl->lun;
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temp=(char *)kv_to_u(kp, (u_int)sdev->desc, 30);
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asprintf(&spc->desc, "%s", temp);
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free(temp);
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}
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int
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scsi_setdev(struct kernel *kp, struct list *list){
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int r=1, bus_valid=0;
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struct uc_scsi *sp;
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struct uc_scsibus *sbp;
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char *t;
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if(kp->scsi_devp)
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for(sp=kp->scsi_devp;sp->device;sp++){
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if(strcmp(list->av[0], sp->device)==0){
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for(sbp=kp->scsibus_devp;sbp->driver; sbp++){
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asprintf(&t, "%s%d", sbp->driver, sbp->unit);
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if(strcmp(list->av[1], t)==0) {
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bus_valid=1;
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}
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free(t);
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}
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if(bus_valid){
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sp->modified=1;
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free(sp->adapter);
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asprintf(&sp->adapter, "%s", list->av[1]);
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sp->target = strtol(list->av[2], (char **)NULL, 0);
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sp->lun = strtol(list->av[3], (char **)NULL, 0);
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r=0;
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goto done;
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} else {
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r=2;
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}
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}
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}
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done:
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return(r);
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}
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void
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scsi_free(struct kernel *kp, int writeback){
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struct uc_scsi *sp;
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struct uc_scsibus *sbp;
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char *t;
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int scbus, i;
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for(sp=kp->scsi_devp; sp->device; sp++){
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if((!kp->incore) && sp->modified && writeback) {
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/* save info */
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/* I'm not sure this is necessary */
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#if 0
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sscanf(sp->device, "%[a-z]%d", name, &unit);
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sp->config->unit= unit;
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#endif
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/* figger out the controller, which may have changed */
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scbus=-1;
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for(sbp=kp->scsibus_devp, i=0;sbp->driver; sbp++,i++){
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asprintf(&t, "%s%d", sbp->driver, sbp->unit);
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if(strcmp(sp->adapter, t)==0) {
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scbus=i;
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}
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free(t);
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}
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/* if we fell through, don't change anything */
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if(scbus!=-1){
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sp->config->cunit= scbus;
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}
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sp->config->target= sp->target;
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sp->config->lun= sp->lun;
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/* sp->config->flags= ; XXX this should be here*/
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}
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free(sp->device);
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free(sp->adapter);
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free(sp->desc);
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}
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free(kp->scsi_devp);
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kp->scsi_devp=(struct uc_scsi *)0;
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/* now free the bus info */
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if(kp->incore){
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for(sbp=kp->scsibus_devp;sbp->driver; sbp++){
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/* fprintf(stderr, "sbp: 0x%x free(0x%x)\n", sbp, sbp->driver);*/
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free(sbp->driver);
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}
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}
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if (kp->scsibus_devp)
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free(kp->scsibus_devp);
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kp->scsibus_devp=(struct uc_scsibus *)0;
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}
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/* end of userconfig/uc_scsi.c */
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