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[/] [or1k/] [trunk/] [uclinux/] [uClinux-2.0.x/] [drivers/] [scsi/] [gdth_proc.c] - Blame information for rev 1765

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/* gdth_proc.c
 * $Id: gdth_proc.c,v 1.1.1.1 2001-09-10 07:44:33 simons Exp $
 */
 
#include "gdth_ioctl.h"
 
int gdth_proc_info(char *buffer,char **start,off_t offset,int length,
                   int hostno,int inout)
{
    int hanum,busnum,i;
 
    TRACE2(("gdth_proc_info() length %d ha %d offs %d inout %d\n",
            length,hostno,(int)offset,inout));
 
    for (i=0; i<gdth_ctr_vcount; ++i) {
        if (gdth_ctr_vtab[i]->host_no == hostno)
            break;
    }
    if (i==gdth_ctr_vcount)
        return(-EINVAL);
 
    hanum = NUMDATA(gdth_ctr_vtab[i])->hanum;
    busnum= NUMDATA(gdth_ctr_vtab[i])->busnum;
 
    if (inout)
        return(gdth_set_info(buffer,length,i,hanum,busnum));
    else
        return(gdth_get_info(buffer,start,offset,length,i,hanum,busnum));
}
 
static int gdth_set_info(char *buffer,int length,int vh,int hanum,int busnum)
{
    int             ret_val;
    Scsi_Cmnd       scp;
    Scsi_Device     sdev;
    gdth_iowr_str   *piowr;
 
    TRACE2(("gdth_set_info() ha %d bus %d\n",hanum,busnum));
    piowr = (gdth_iowr_str *)buffer;
 
    memset(&sdev,0,sizeof(Scsi_Device));
    memset(&scp, 0,sizeof(Scsi_Cmnd));
    sdev.host = gdth_ctr_vtab[vh];
    sdev.id = sdev.host->this_id;
    scp.cmd_len = 12;
    scp.host = gdth_ctr_vtab[vh];
    scp.target = sdev.host->this_id;
    scp.device = &sdev;
    scp.use_sg = 0;
 
    if (length >= 4) {
        if (strncmp(buffer,"gdth",4) == 0) {
            buffer += 5;
            length -= 5;
            ret_val = gdth_set_asc_info( buffer, length, hanum, scp );
        } else if (piowr->magic == GDTIOCTL_MAGIC) {
            ret_val = gdth_set_bin_info( buffer, length, hanum, scp );
        } else {
            printk("GDT: Wrong signature: %6s\n",buffer);
            ret_val = -EINVAL;
        }
    } else {
        ret_val = -EINVAL;
    }
    return ret_val;
}
 
static int gdth_set_asc_info(char *buffer,int length,int hanum,Scsi_Cmnd scp)
{
    int             orig_length, drive, wb_mode;
    char            cmnd[12];
    int             i, j, found;
    gdth_ha_str     *ha;
    gdth_cmd_str    gdtcmd;
    gdth_cpar_str   *pcpar;
 
    TRACE2(("gdth_set_asc_info() ha %d\n",hanum));
    ha = HADATA(gdth_ctr_tab[hanum]);
    memset(cmnd, 0,10);
    orig_length = length + 5;
    drive = -1;
    wb_mode = 0;
    found = FALSE;
 
    if (length >= 5 && strncmp(buffer,"flush",5)==0) {
        buffer += 6;
        length -= 6;
        if (length && *buffer>='0' && *buffer<='9') {
            drive = (int)(*buffer-'0');
            ++buffer; --length;
            if (length && *buffer>='0' && *buffer<='9') {
                drive = drive*10 + (int)(*buffer-'0');
                ++buffer; --length;
            }
            printk("GDT: Flushing host drive %d .. ",drive);
        } else {
            printk("GDT: Flushing all host drives .. ");
        }
        for (i = 0; i < MAXBUS; ++i) {
            for (j = 0; j < MAXID; ++j) {
                if (ha->id[i][j].type == CACHE_DTYP) {
                    if (drive != -1 &&
                        ha->id[i][j].hostdrive != (ushort)drive)
                        continue;
                    found = TRUE;
                    gdtcmd.BoardNode = LOCALBOARD;
                    gdtcmd.Service = CACHESERVICE;
                    gdtcmd.OpCode = GDT_FLUSH;
                    gdtcmd.u.cache.DeviceNo = ha->id[i][j].hostdrive;
                    gdtcmd.u.cache.BlockNo = 1;
                    gdtcmd.u.cache.sg_canz = 0;
                    {
                        struct semaphore sem = MUTEX_LOCKED;
                        scp.request.rq_status = RQ_SCSI_BUSY;
                        scp.request.sem = &sem;
                        scp.SCp.this_residual = IOCTL_PRI;
                        scsi_do_cmd(&scp, cmnd, &gdtcmd,
                                    sizeof(gdth_cmd_str), gdth_scsi_done,
                                    30*HZ, 1);
                        down(&sem);
                    }
                }
            }
        }
        if (!found)
            printk("\nNo host drive found !\n");
        else
            printk("Done.\n");
        return(orig_length);
    }
 
    if (length >= 7 && strncmp(buffer,"wbp_off",7)==0) {
        buffer += 8;
        length -= 8;
        printk("GDT: Disabling write back permanently .. ");
        wb_mode = 1;
    } else if (length >= 6 && strncmp(buffer,"wbp_on",6)==0) {
        buffer += 7;
        length -= 7;
        printk("GDT: Enabling write back permanently .. ");
        wb_mode = 2;
    } else if (length >= 6 && strncmp(buffer,"wb_off",6)==0) {
        buffer += 7;
        length -= 7;
        printk("GDT: Disabling write back commands .. ");
        if (ha->cache_feat & GDT_WR_THROUGH) {
            gdth_write_through = TRUE;
            printk("Done.\n");
        } else {
            printk("Not supported !\n");
        }
        return(orig_length);
    } else if (length >= 5 && strncmp(buffer,"wb_on",5)==0) {
        buffer += 6;
        length -= 6;
        printk("GDT: Enabling write back commands .. ");
        gdth_write_through = FALSE;
        printk("Done.\n");
        return(orig_length);
    }
 
    if (wb_mode) {
        pcpar = (gdth_cpar_str *)kmalloc( sizeof(gdth_cpar_str),
            GFP_ATOMIC | GFP_DMA );
        if (pcpar == NULL) {
            TRACE2(("gdth_set_info(): Unable to allocate memory.\n"));
            printk("Unable to allocate memory.\n");
            return(-EINVAL);
        }
        memcpy( pcpar, &ha->cpar, sizeof(gdth_cpar_str) );
        gdtcmd.BoardNode = LOCALBOARD;
        gdtcmd.Service = CACHESERVICE;
        gdtcmd.OpCode = GDT_IOCTL;
        gdtcmd.u.ioctl.p_param = virt_to_bus(pcpar);
        gdtcmd.u.ioctl.param_size = sizeof(gdth_cpar_str);
        gdtcmd.u.ioctl.subfunc = CACHE_CONFIG;
        gdtcmd.u.ioctl.channel = INVALID_CHANNEL;
        pcpar->write_back = wb_mode==1 ? 0:1;
        {
            struct semaphore sem = MUTEX_LOCKED;
            scp.request.rq_status = RQ_SCSI_BUSY;
            scp.request.sem = &sem;
            scp.SCp.this_residual = IOCTL_PRI;
            scsi_do_cmd(&scp, cmnd, &gdtcmd, sizeof(gdth_cmd_str),
                        gdth_scsi_done, 30*HZ, 1);
            down(&sem);
        }
        kfree( pcpar );
        printk("Done.\n");
        return(orig_length);
    }
 
    printk("GDT: Unknown command: %s  Length: %d\n",buffer,length);
    return(-EINVAL);
}
 
static int gdth_set_bin_info(char *buffer,int length,int hanum,Scsi_Cmnd scp)
{
    char            cmnd[12];
    int             id;
    unchar          i, j, k, found;
    gdth_ha_str     *ha;
    gdth_iowr_str   *piowr;
    gdth_iord_str   *piord;
    gdth_cmd_str    *pcmd;
    ulong           *ppadd;
    ulong           add_size, flags;
 
 
    TRACE2(("gdth_set_bin_info() ha %d\n",hanum));
    ha = HADATA(gdth_ctr_tab[hanum]);
    memset(cmnd, 0,10);
    piowr = (gdth_iowr_str *)buffer;
    piord = NULL;
    pcmd = NULL;
 
    if (length < GDTOFFSOF(gdth_iowr_str,iu))
        return(-EINVAL);
 
    switch (piowr->ioctl) {
      case GDTIOCTL_GENERAL:
        if (length < GDTOFFSOF(gdth_iowr_str,iu.general.data[0]))
            return(-EINVAL);
        pcmd = (gdth_cmd_str *)piowr->iu.general.command;
        pcmd->Service = piowr->service;
        if (pcmd->OpCode == GDT_IOCTL) {
            ppadd = &pcmd->u.ioctl.p_param;
            add_size = pcmd->u.ioctl.param_size;
        } else if (piowr->service == CACHESERVICE) {
            add_size = pcmd->u.cache.BlockCnt * SECTOR_SIZE;
            if (ha->cache_feat & SCATTER_GATHER) {
                ppadd = &pcmd->u.cache.sg_lst[0].sg_ptr;
                pcmd->u.cache.DestAddr = -1UL;
                pcmd->u.cache.sg_lst[0].sg_len = add_size;
                pcmd->u.cache.sg_canz = 1;
            } else {
                ppadd = &pcmd->u.cache.DestAddr;
                pcmd->u.cache.sg_canz = 0;
            }
        } else if (piowr->service == SCSIRAWSERVICE) {
            add_size = pcmd->u.raw.sdlen;
            if (ha->raw_feat & SCATTER_GATHER) {
                ppadd = &pcmd->u.raw.sg_lst[0].sg_ptr;
                pcmd->u.raw.sdata = -1UL;
                pcmd->u.raw.sg_lst[0].sg_len = add_size;
                pcmd->u.raw.sg_ranz = 1;
            } else {
                ppadd = &pcmd->u.raw.sdata;
                pcmd->u.raw.sg_ranz = 0;
            }
        } else {
            return(-EINVAL);
        }
        id = gdth_ioctl_alloc( hanum, sizeof(gdth_iord_str) + add_size );
        if (id == -1)
            return(-EBUSY);
        piord = (gdth_iord_str *)gdth_ioctl_tab[id-1][hanum];
 
        piord->size = sizeof(gdth_iord_str) + add_size;
        if (add_size > 0) {
            memcpy(piord->iu.general.data, piowr->iu.general.data, add_size);
            *ppadd = virt_to_bus(piord->iu.general.data);
        }
        /* do IOCTL */
        {
            struct semaphore sem = MUTEX_LOCKED;
            scp.request.rq_status = RQ_SCSI_BUSY;
            scp.request.sem = &sem;
            scp.SCp.this_residual = IOCTL_PRI;
            scsi_do_cmd(&scp, cmnd, pcmd,
                        sizeof(gdth_cmd_str), gdth_scsi_done,
                        piowr->timeout*HZ, 1);
            down(&sem);
            piord->status = (ulong)scp.SCp.Message;
        }
        break;
 
      case GDTIOCTL_DRVERS:
        id = gdth_ioctl_alloc( hanum, sizeof(gdth_iord_str) );
        if (id == -1)
            return(-EBUSY);
        piord = (gdth_iord_str *)gdth_ioctl_tab[id-1][hanum];
        piord->size = sizeof(gdth_iord_str);
        piord->status = S_OK;
        piord->iu.drvers.version = (GDTH_VERSION<<8) | GDTH_SUBVERSION;
        break;
 
      case GDTIOCTL_CTRTYPE:
        id = gdth_ioctl_alloc( hanum, sizeof(gdth_iord_str) );
        if (id == -1)
            return(-EBUSY);
        piord = (gdth_iord_str *)gdth_ioctl_tab[id-1][hanum];
        piord->size = sizeof(gdth_iord_str);
        piord->status = S_OK;
        if (ha->type == GDT_ISA || ha->type == GDT_EISA) {
            piord->iu.ctrtype.type = (unchar)((ha->stype>>20) - 0x10);
        } else if (ha->type != GDT_PCIMPR) {
            piord->iu.ctrtype.type = (unchar)((ha->stype<<8) + 6);
        } else {
            piord->iu.ctrtype.type = 0xfe;
            piord->iu.ctrtype.ext_type = 0x6000 | ha->stype;
        }
        piord->iu.ctrtype.info = ha->brd_phys;
        piord->iu.ctrtype.oem_id = (ushort)GDT3_ID;
        break;
 
      case GDTIOCTL_CTRCNT:
        id = gdth_ioctl_alloc( hanum, sizeof(gdth_iord_str) );
        if (id == -1)
            return(-EBUSY);
        piord = (gdth_iord_str *)gdth_ioctl_tab[id-1][hanum];
        piord->size = sizeof(gdth_iord_str);
        piord->status = S_OK;
        piord->iu.ctrcnt.count = (ushort)gdth_ctr_count;
        break;
 
      case GDTIOCTL_OSVERS:
        id = gdth_ioctl_alloc( hanum, sizeof(gdth_iord_str) );
        if (id == -1)
            return(-EBUSY);
        piord = (gdth_iord_str *)gdth_ioctl_tab[id-1][hanum];
        piord->size = sizeof(gdth_iord_str);
        piord->status = S_OK;
        piord->iu.osvers.version = (unchar)(LINUX_VERSION_CODE >> 16);
        piord->iu.osvers.subversion = (unchar)(LINUX_VERSION_CODE >> 8);
        piord->iu.osvers.revision = (ushort)(LINUX_VERSION_CODE & 0xff);
        break;
 
      case GDTIOCTL_LOCKDRV:
        id = gdth_ioctl_alloc( hanum, sizeof(gdth_iord_str) );
        if (id == -1)
            return(-EBUSY);
        piord = (gdth_iord_str *)gdth_ioctl_tab[id-1][hanum];
        for (i = k = 0; i < piowr->iu.lockdrv.drive_cnt; ++i) {
            found = FALSE;
            for (j = 0; j < ha->bus_cnt; ++j) {
                for (k = 0; k < MAXID; ++k) {
                    if (ha->id[j][k].type == CACHE_DTYP &&
                        ha->id[j][k].hostdrive == piowr->iu.lockdrv.drives[i]) {
                        found = TRUE;
                        break;
                    }
                }
                if (found)
                    break;
            }
            if (!found)
                continue;
 
            if (piowr->iu.lockdrv.lock) {
                save_flags( flags );
                cli();
                ha->id[j][k].lock = 1;
                restore_flags( flags );
                gdth_wait_completion( hanum, j, k );
                gdth_stop_timeout( hanum, j, k );
            } else {
                save_flags( flags );
                cli();
                ha->id[j][k].lock = 0;
                restore_flags( flags );
                gdth_start_timeout( hanum, j, k );
                gdth_next( hanum );
            }
        }
        piord->size = sizeof(gdth_iord_str);
        piord->status = S_OK;
        break;
 
      case GDTIOCTL_LOCKCHN:
        id = gdth_ioctl_alloc( hanum, sizeof(gdth_iord_str) );
        if (id == -1)
            return(-EBUSY);
        for (k = 0, j = piowr->iu.lockchn.channel; k < MAXID; ++k) {
            if (ha->id[j][k].type != RAW_DTYP)
                continue;
 
            if (piowr->iu.lockchn.lock) {
                save_flags( flags );
                cli();
                ha->id[j][k].lock = 1;
                restore_flags( flags );
                gdth_wait_completion( hanum, j, k );
                gdth_stop_timeout( hanum, j, k );
            } else {
                save_flags( flags );
                cli();
                ha->id[j][k].lock = 0;
                restore_flags( flags );
                gdth_start_timeout( hanum, j, k );
                gdth_next( hanum );
            }
        }
        piord = (gdth_iord_str *)gdth_ioctl_tab[id-1][hanum];
        piord->size = sizeof(gdth_iord_str);
        piord->status = S_OK;
        break;
 
      case GDTIOCTL_EVENT:
        id = gdth_ioctl_alloc( hanum, sizeof(gdth_iord_str) );
        if (id == -1)
            return(-EBUSY);
        piord = (gdth_iord_str *)gdth_ioctl_tab[id-1][hanum];
        if (piowr->iu.event.erase == 0) {
            piord->iu.event.handle = gdth_read_event( piowr->iu.event.handle,
                (gdth_evt_str *)piord->iu.event.evt );
        } else {
            piord->iu.event.handle = piowr->iu.event.handle;
            gdth_readapp_event( (unchar)piowr->iu.event.erase,
                (gdth_evt_str *)piord->iu.event.evt );
        }
        piord->size = sizeof(gdth_iord_str);
        piord->status = S_OK;
        break;
 
      default:
        return(-EINVAL);
    }
    /* we return a buffer ID to detect the right buffer during READ-IOCTL */
    return id;
}
 
static int gdth_get_info(char *buffer,char **start,off_t offset,
                         int length,int vh,int hanum,int busnum)
{
    int size = 0,len = 0;
    off_t begin = 0,pos = 0;
    gdth_ha_str *ha;
    gdth_iord_str *piord;
    int id;
 
    TRACE2(("gdth_get_info() ha %d bus %d\n",hanum,busnum));
    ha = HADATA(gdth_ctr_tab[hanum]);
    id = length;
 
    /* look for buffer ID in length */
    if (id > 4) {
#if LINUX_VERSION_CODE >= 0x020000
        size = sprintf(buffer+len,
                       "%s SCSI Disk Array Controller\n",
                       ha->ctr_name);
#else
        size = sprintf(buffer+len,
                       "%s SCSI Disk Array Controller (SCSI Bus %d)\n",
                       ha->ctr_name,busnum);
#endif
        len += size;  pos = begin + len;
        size = sprintf(buffer+len,
                       "Firmware Version: %d.%2d\tDriver Version: %s\n",
                       (unchar)(ha->cpar.version>>8),
                       (unchar)(ha->cpar.version),GDTH_VERSION_STR);
        len += size;  pos = begin + len;
 
        if (pos < offset) {
            len = 0;
            begin = pos;
        }
        if (pos > offset + length)
            goto stop_output;
 
    } else {
        piord = (gdth_iord_str *)gdth_ioctl_tab[id-1][hanum];
        if (piord == NULL)
            goto stop_output;
        length = piord->size;
        memcpy(buffer+len, (char *)piord, length);
        gdth_ioctl_free(hanum, id);
        len += length; pos = begin + len;
 
        if (pos < offset) {
            len = 0;
            begin = pos;
        }
        if (pos > offset + length)
            goto stop_output;
    }
 
stop_output:
    *start = buffer +(offset-begin);
    len -= (offset-begin);
    if (len > length)
        len = length;
    TRACE2(("get_info() len %d pos %d begin %d offset %d length %d size %d\n",
            len,(int)pos,(int)begin,(int)offset,length,size));
    return(len);
}
 
 
void gdth_scsi_done(Scsi_Cmnd *scp)
{
    TRACE2(("gdth_scsi_done()\n"));
 
    scp->request.rq_status = RQ_SCSI_DONE;
 
    if (scp->request.sem != NULL)
        up(scp->request.sem);
}
 
static int gdth_ioctl_alloc(int hanum, ushort size)
{
    ulong flags;
    int i;
 
    if (size == 0)
        return -1;
 
    save_flags(flags);
    cli();
 
    for (i = 0; i < 4; ++i) {
        if (gdth_ioctl_tab[i][hanum] == NULL) {
            gdth_ioctl_tab[i][hanum] = kmalloc( size, GFP_ATOMIC | GFP_DMA );
            break;
        }
    }
 
    restore_flags(flags);
    if (i == 4 || gdth_ioctl_tab[i][hanum] == NULL)
        return -1;
    return (i+1);
}
 
static void gdth_ioctl_free(int hanum, int idx)
{
    ulong flags;
 
    save_flags(flags);
    cli();
 
    kfree( gdth_ioctl_tab[idx-1][hanum] );
    gdth_ioctl_tab[idx-1][hanum] = NULL;
 
    restore_flags(flags);
}
 
static void gdth_wait_completion(int hanum, int busnum, int id)
{
    ulong flags;
    int i;
    Scsi_Cmnd *scp;
 
    save_flags(flags);
    cli();
 
    for (i = 0; i < GDTH_MAXCMDS; ++i) {
        scp = gdth_cmd_tab[i][hanum].cmnd;
#if LINUX_VERSION_CODE >= 0x020000
        if (!SPECIAL_SCP(scp) && scp->target == (unchar)id &&
            scp->channel == (unchar)busnum)
#else
        if (!SPECIAL_SCP(scp) && scp->target == (unchar)id &&
            NUMDATA(scp->host)->busnum == (unchar)busnum)
#endif
        {
            scp->SCp.have_data_in = 0;
            restore_flags(flags);
            while (!scp->SCp.have_data_in)
                barrier();
            scp->scsi_done(scp);
            save_flags(flags);
            cli();
        }
    }
    restore_flags(flags);
}
 
static void gdth_stop_timeout(int hanum, int busnum, int id)
{
    ulong flags;
    Scsi_Cmnd *scp;
    gdth_ha_str *ha;
 
    save_flags(flags);
    cli();
    ha = HADATA(gdth_ctr_tab[hanum]);
 
    for (scp = ha->req_first; scp; scp = (Scsi_Cmnd *)scp->SCp.ptr) {
#if LINUX_VERSION_CODE >= 0x020000
        if (scp->target == (unchar)id &&
            scp->channel == (unchar)busnum)
#else
        if (scp->target == (unchar)id &&
            NUMDATA(scp->host)->busnum == (unchar)busnum)
#endif
        {
            TRACE2(("gdth_stop_timeout(): update_timeout()\n"));
            scp->SCp.buffers_residual = gdth_update_timeout(hanum, scp, 0);
        }
    }
    restore_flags(flags);
}
 
static void gdth_start_timeout(int hanum, int busnum, int id)
{
    ulong flags;
    Scsi_Cmnd *scp;
    gdth_ha_str *ha;
 
    save_flags(flags);
    cli();
    ha = HADATA(gdth_ctr_tab[hanum]);
 
    for (scp = ha->req_first; scp; scp = (Scsi_Cmnd *)scp->SCp.ptr) {
#if LINUX_VERSION_CODE >= 0x020000
        if (scp->target == (unchar)id &&
            scp->channel == (unchar)busnum)
#else
        if (scp->target == (unchar)id &&
            NUMDATA(scp->host)->busnum == (unchar)busnum)
#endif
        {
            TRACE2(("gdth_start_timeout(): update_timeout()\n"));
            gdth_update_timeout(hanum, scp, scp->SCp.buffers_residual);
        }
    }
    restore_flags(flags);
}
 
static int gdth_update_timeout(int hanum, Scsi_Cmnd *scp, int timeout)
{
    ulong flags;
    int oldto;
 
    save_flags(flags);
    cli();
    oldto = scp->timeout_per_command;
    scp->timeout_per_command = timeout;
 
#if LINUX_VERSION_CODE >= 0x02014B
    if (timeout == 0) {
        del_timer(&scp->eh_timeout);
        scp->eh_timeout.data = (unsigned long) NULL;
        scp->eh_timeout.expires = 0;
    } else {
        if (scp->eh_timeout.data != (unsigned long) NULL)
            del_timer(&scp->eh_timeout);
        scp->eh_timeout.data = (unsigned long) scp;
        scp->eh_timeout.expires = jiffies + timeout;
        add_timer(&scp->eh_timeout);
    }
#else
    if (timeout > 0) {
        if (timer_table[SCSI_TIMER].expires == 0) {
            timer_table[SCSI_TIMER].expires = jiffies + timeout;
            timer_active |= 1 << SCSI_TIMER;
        } else {
            if (jiffies + timeout < timer_table[SCSI_TIMER].expires)
                timer_table[SCSI_TIMER].expires = jiffies + timeout;
        }
    }
#endif
 
    restore_flags(flags);
    return oldto;
}
 

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[/] [or1k/] [trunk/] [uclinux/] [uClinux-2.0.x/] [drivers/] [scsi/] [gdth_proc.c] - Blame information for rev 1765

Line No.	Rev	Author	Line
1	199	simons	`/* gdth_proc.c`
2			`* $Id: gdth_proc.c,v 1.1.1.1 2001-09-10 07:44:33 simons Exp $`
3			`*/`
4
5			`#include "gdth_ioctl.h"`
6
7			`int gdth_proc_info(char buffer,char *start,off_t offset,int length,`
8			`int hostno,int inout)`
9			`{`
10			`int hanum,busnum,i;`
11
12			`TRACE2(("gdth_proc_info() length %d ha %d offs %d inout %d\n",`
13			`length,hostno,(int)offset,inout));`
14
15			`for (i=0; i<gdth_ctr_vcount; ++i) {`
16			`if (gdth_ctr_vtab[i]->host_no == hostno)`
17			`break;`
18			`}`
19			`if (i==gdth_ctr_vcount)`
20			`return(-EINVAL);`
21
22			`hanum = NUMDATA(gdth_ctr_vtab[i])->hanum;`
23			`busnum= NUMDATA(gdth_ctr_vtab[i])->busnum;`
24
25			`if (inout)`
26			`return(gdth_set_info(buffer,length,i,hanum,busnum));`
27			`else`
28			`return(gdth_get_info(buffer,start,offset,length,i,hanum,busnum));`
29			`}`
30
31			`static int gdth_set_info(char *buffer,int length,int vh,int hanum,int busnum)`
32			`{`
33			`int ret_val;`
34			`Scsi_Cmnd scp;`
35			`Scsi_Device sdev;`
36			`gdth_iowr_str *piowr;`
37
38			`TRACE2(("gdth_set_info() ha %d bus %d\n",hanum,busnum));`
39			`piowr = (gdth_iowr_str *)buffer;`
40
41			`memset(&sdev,0,sizeof(Scsi_Device));`
42			`memset(&scp, 0,sizeof(Scsi_Cmnd));`
43			`sdev.host = gdth_ctr_vtab[vh];`
44			`sdev.id = sdev.host->this_id;`
45			`scp.cmd_len = 12;`
46			`scp.host = gdth_ctr_vtab[vh];`
47			`scp.target = sdev.host->this_id;`
48			`scp.device = &sdev;`
49			`scp.use_sg = 0;`
50
51			`if (length >= 4) {`
52			`if (strncmp(buffer,"gdth",4) == 0) {`
53			`buffer += 5;`
54			`length -= 5;`
55			`ret_val = gdth_set_asc_info( buffer, length, hanum, scp );`
56			`} else if (piowr->magic == GDTIOCTL_MAGIC) {`
57			`ret_val = gdth_set_bin_info( buffer, length, hanum, scp );`
58			`} else {`
59			`printk("GDT: Wrong signature: %6s\n",buffer);`
60			`ret_val = -EINVAL;`
61			`}`
62			`} else {`
63			`ret_val = -EINVAL;`
64			`}`
65			`return ret_val;`
66			`}`
67
68			`static int gdth_set_asc_info(char *buffer,int length,int hanum,Scsi_Cmnd scp)`
69			`{`
70			`int orig_length, drive, wb_mode;`
71			`char cmnd[12];`
72			`int i, j, found;`
73			`gdth_ha_str *ha;`
74			`gdth_cmd_str gdtcmd;`
75			`gdth_cpar_str *pcpar;`
76
77			`TRACE2(("gdth_set_asc_info() ha %d\n",hanum));`
78			`ha = HADATA(gdth_ctr_tab[hanum]);`
79			`memset(cmnd, 0,10);`
80			`orig_length = length + 5;`
81			`drive = -1;`
82			`wb_mode = 0;`
83			`found = FALSE;`
84
85			`if (length >= 5 && strncmp(buffer,"flush",5)==0) {`
86			`buffer += 6;`
87			`length -= 6;`
88			`if (length && buffer>='0' && buffer<='9') {`
89			`drive = (int)(*buffer-'0');`
90			`++buffer; --length;`
91			`if (length && buffer>='0' && buffer<='9') {`
92			`drive = drive10 + (int)(buffer-'0');`
93			`++buffer; --length;`
94			`}`
95			`printk("GDT: Flushing host drive %d .. ",drive);`
96			`} else {`
97			`printk("GDT: Flushing all host drives .. ");`
98			`}`
99			`for (i = 0; i < MAXBUS; ++i) {`
100			`for (j = 0; j < MAXID; ++j) {`
101			`if (ha->id[i][j].type == CACHE_DTYP) {`
102			`if (drive != -1 &&`
103			`ha->id[i][j].hostdrive != (ushort)drive)`
104			`continue;`
105			`found = TRUE;`
106			`gdtcmd.BoardNode = LOCALBOARD;`
107			`gdtcmd.Service = CACHESERVICE;`
108			`gdtcmd.OpCode = GDT_FLUSH;`
109			`gdtcmd.u.cache.DeviceNo = ha->id[i][j].hostdrive;`
110			`gdtcmd.u.cache.BlockNo = 1;`
111			`gdtcmd.u.cache.sg_canz = 0;`
112			`{`
113			`struct semaphore sem = MUTEX_LOCKED;`
114			`scp.request.rq_status = RQ_SCSI_BUSY;`
115			`scp.request.sem = &sem;`
116			`scp.SCp.this_residual = IOCTL_PRI;`
117			`scsi_do_cmd(&scp, cmnd, &gdtcmd,`
118			`sizeof(gdth_cmd_str), gdth_scsi_done,`
119			`30*HZ, 1);`
120			`down(&sem);`
121			`}`
122			`}`
123			`}`
124			`}`
125			`if (!found)`
126			`printk("\nNo host drive found !\n");`
127			`else`
128			`printk("Done.\n");`
129			`return(orig_length);`
130			`}`
131
132			`if (length >= 7 && strncmp(buffer,"wbp_off",7)==0) {`
133			`buffer += 8;`
134			`length -= 8;`
135			`printk("GDT: Disabling write back permanently .. ");`
136			`wb_mode = 1;`
137			`} else if (length >= 6 && strncmp(buffer,"wbp_on",6)==0) {`
138			`buffer += 7;`
139			`length -= 7;`
140			`printk("GDT: Enabling write back permanently .. ");`
141			`wb_mode = 2;`
142			`} else if (length >= 6 && strncmp(buffer,"wb_off",6)==0) {`
143			`buffer += 7;`
144			`length -= 7;`
145			`printk("GDT: Disabling write back commands .. ");`
146			`if (ha->cache_feat & GDT_WR_THROUGH) {`
147			`gdth_write_through = TRUE;`
148			`printk("Done.\n");`
149			`} else {`
150			`printk("Not supported !\n");`
151			`}`
152			`return(orig_length);`
153			`} else if (length >= 5 && strncmp(buffer,"wb_on",5)==0) {`
154			`buffer += 6;`
155			`length -= 6;`
156			`printk("GDT: Enabling write back commands .. ");`
157			`gdth_write_through = FALSE;`
158			`printk("Done.\n");`
159			`return(orig_length);`
160			`}`
161
162			`if (wb_mode) {`
163			`pcpar = (gdth_cpar_str *)kmalloc( sizeof(gdth_cpar_str),`
164			`GFP_ATOMIC \| GFP_DMA );`
165			`if (pcpar == NULL) {`
166			`TRACE2(("gdth_set_info(): Unable to allocate memory.\n"));`
167			`printk("Unable to allocate memory.\n");`
168			`return(-EINVAL);`
169			`}`
170			`memcpy( pcpar, &ha->cpar, sizeof(gdth_cpar_str) );`
171			`gdtcmd.BoardNode = LOCALBOARD;`
172			`gdtcmd.Service = CACHESERVICE;`
173			`gdtcmd.OpCode = GDT_IOCTL;`
174			`gdtcmd.u.ioctl.p_param = virt_to_bus(pcpar);`
175			`gdtcmd.u.ioctl.param_size = sizeof(gdth_cpar_str);`
176			`gdtcmd.u.ioctl.subfunc = CACHE_CONFIG;`
177			`gdtcmd.u.ioctl.channel = INVALID_CHANNEL;`
178			`pcpar->write_back = wb_mode==1 ? 0:1;`
179			`{`
180			`struct semaphore sem = MUTEX_LOCKED;`
181			`scp.request.rq_status = RQ_SCSI_BUSY;`
182			`scp.request.sem = &sem;`
183			`scp.SCp.this_residual = IOCTL_PRI;`
184			`scsi_do_cmd(&scp, cmnd, &gdtcmd, sizeof(gdth_cmd_str),`
185			`gdth_scsi_done, 30*HZ, 1);`
186			`down(&sem);`
187			`}`
188			`kfree( pcpar );`
189			`printk("Done.\n");`
190			`return(orig_length);`
191			`}`
192
193			`printk("GDT: Unknown command: %s Length: %d\n",buffer,length);`
194			`return(-EINVAL);`
195			`}`
196
197			`static int gdth_set_bin_info(char *buffer,int length,int hanum,Scsi_Cmnd scp)`
198			`{`
199			`char cmnd[12];`
200			`int id;`
201			`unchar i, j, k, found;`
202			`gdth_ha_str *ha;`
203			`gdth_iowr_str *piowr;`
204			`gdth_iord_str *piord;`
205			`gdth_cmd_str *pcmd;`
206			`ulong *ppadd;`
207			`ulong add_size, flags;`
208
209
210			`TRACE2(("gdth_set_bin_info() ha %d\n",hanum));`
211			`ha = HADATA(gdth_ctr_tab[hanum]);`
212			`memset(cmnd, 0,10);`
213			`piowr = (gdth_iowr_str *)buffer;`
214			`piord = NULL;`
215			`pcmd = NULL;`
216
217			`if (length < GDTOFFSOF(gdth_iowr_str,iu))`
218			`return(-EINVAL);`
219
220			`switch (piowr->ioctl) {`
221			`case GDTIOCTL_GENERAL:`
222			`if (length < GDTOFFSOF(gdth_iowr_str,iu.general.data[0]))`
223			`return(-EINVAL);`
224			`pcmd = (gdth_cmd_str *)piowr->iu.general.command;`
225			`pcmd->Service = piowr->service;`
226			`if (pcmd->OpCode == GDT_IOCTL) {`
227			`ppadd = &pcmd->u.ioctl.p_param;`
228			`add_size = pcmd->u.ioctl.param_size;`
229			`} else if (piowr->service == CACHESERVICE) {`
230			`add_size = pcmd->u.cache.BlockCnt * SECTOR_SIZE;`
231			`if (ha->cache_feat & SCATTER_GATHER) {`
232			`ppadd = &pcmd->u.cache.sg_lst[0].sg_ptr;`
233			`pcmd->u.cache.DestAddr = -1UL;`
234			`pcmd->u.cache.sg_lst[0].sg_len = add_size;`
235			`pcmd->u.cache.sg_canz = 1;`
236			`} else {`
237			`ppadd = &pcmd->u.cache.DestAddr;`
238			`pcmd->u.cache.sg_canz = 0;`
239			`}`
240			`} else if (piowr->service == SCSIRAWSERVICE) {`
241			`add_size = pcmd->u.raw.sdlen;`
242			`if (ha->raw_feat & SCATTER_GATHER) {`
243			`ppadd = &pcmd->u.raw.sg_lst[0].sg_ptr;`
244			`pcmd->u.raw.sdata = -1UL;`
245			`pcmd->u.raw.sg_lst[0].sg_len = add_size;`
246			`pcmd->u.raw.sg_ranz = 1;`
247			`} else {`
248			`ppadd = &pcmd->u.raw.sdata;`
249			`pcmd->u.raw.sg_ranz = 0;`
250			`}`
251			`} else {`
252			`return(-EINVAL);`
253			`}`
254			`id = gdth_ioctl_alloc( hanum, sizeof(gdth_iord_str) + add_size );`
255			`if (id == -1)`
256			`return(-EBUSY);`
257			`piord = (gdth_iord_str *)gdth_ioctl_tab[id-1][hanum];`
258
259			`piord->size = sizeof(gdth_iord_str) + add_size;`
260			`if (add_size > 0) {`
261			`memcpy(piord->iu.general.data, piowr->iu.general.data, add_size);`
262			`*ppadd = virt_to_bus(piord->iu.general.data);`
263			`}`
264			`/* do IOCTL */`
265			`{`
266			`struct semaphore sem = MUTEX_LOCKED;`
267			`scp.request.rq_status = RQ_SCSI_BUSY;`
268			`scp.request.sem = &sem;`
269			`scp.SCp.this_residual = IOCTL_PRI;`
270			`scsi_do_cmd(&scp, cmnd, pcmd,`
271			`sizeof(gdth_cmd_str), gdth_scsi_done,`
272			`piowr->timeout*HZ, 1);`
273			`down(&sem);`
274			`piord->status = (ulong)scp.SCp.Message;`
275			`}`
276			`break;`
277
278			`case GDTIOCTL_DRVERS:`
279			`id = gdth_ioctl_alloc( hanum, sizeof(gdth_iord_str) );`
280			`if (id == -1)`
281			`return(-EBUSY);`
282			`piord = (gdth_iord_str *)gdth_ioctl_tab[id-1][hanum];`
283			`piord->size = sizeof(gdth_iord_str);`
284			`piord->status = S_OK;`
285			`piord->iu.drvers.version = (GDTH_VERSION<<8) \| GDTH_SUBVERSION;`
286			`break;`
287
288			`case GDTIOCTL_CTRTYPE:`
289			`id = gdth_ioctl_alloc( hanum, sizeof(gdth_iord_str) );`
290			`if (id == -1)`
291			`return(-EBUSY);`
292			`piord = (gdth_iord_str *)gdth_ioctl_tab[id-1][hanum];`
293			`piord->size = sizeof(gdth_iord_str);`
294			`piord->status = S_OK;`
295			`if (ha->type == GDT_ISA \|\| ha->type == GDT_EISA) {`
296			`piord->iu.ctrtype.type = (unchar)((ha->stype>>20) - 0x10);`
297			`} else if (ha->type != GDT_PCIMPR) {`
298			`piord->iu.ctrtype.type = (unchar)((ha->stype<<8) + 6);`
299			`} else {`
300			`piord->iu.ctrtype.type = 0xfe;`
301			`piord->iu.ctrtype.ext_type = 0x6000 \| ha->stype;`
302			`}`
303			`piord->iu.ctrtype.info = ha->brd_phys;`
304			`piord->iu.ctrtype.oem_id = (ushort)GDT3_ID;`
305			`break;`
306
307			`case GDTIOCTL_CTRCNT:`
308			`id = gdth_ioctl_alloc( hanum, sizeof(gdth_iord_str) );`
309			`if (id == -1)`
310			`return(-EBUSY);`
311			`piord = (gdth_iord_str *)gdth_ioctl_tab[id-1][hanum];`
312			`piord->size = sizeof(gdth_iord_str);`
313			`piord->status = S_OK;`
314			`piord->iu.ctrcnt.count = (ushort)gdth_ctr_count;`
315			`break;`
316
317			`case GDTIOCTL_OSVERS:`
318			`id = gdth_ioctl_alloc( hanum, sizeof(gdth_iord_str) );`
319			`if (id == -1)`
320			`return(-EBUSY);`
321			`piord = (gdth_iord_str *)gdth_ioctl_tab[id-1][hanum];`
322			`piord->size = sizeof(gdth_iord_str);`
323			`piord->status = S_OK;`
324			`piord->iu.osvers.version = (unchar)(LINUX_VERSION_CODE >> 16);`
325			`piord->iu.osvers.subversion = (unchar)(LINUX_VERSION_CODE >> 8);`
326			`piord->iu.osvers.revision = (ushort)(LINUX_VERSION_CODE & 0xff);`
327			`break;`
328
329			`case GDTIOCTL_LOCKDRV:`
330			`id = gdth_ioctl_alloc( hanum, sizeof(gdth_iord_str) );`
331			`if (id == -1)`
332			`return(-EBUSY);`
333			`piord = (gdth_iord_str *)gdth_ioctl_tab[id-1][hanum];`
334			`for (i = k = 0; i < piowr->iu.lockdrv.drive_cnt; ++i) {`
335			`found = FALSE;`
336			`for (j = 0; j < ha->bus_cnt; ++j) {`
337			`for (k = 0; k < MAXID; ++k) {`
338			`if (ha->id[j][k].type == CACHE_DTYP &&`
339			`ha->id[j][k].hostdrive == piowr->iu.lockdrv.drives[i]) {`
340			`found = TRUE;`
341			`break;`
342			`}`
343			`}`
344			`if (found)`
345			`break;`
346			`}`
347			`if (!found)`
348			`continue;`
349
350			`if (piowr->iu.lockdrv.lock) {`
351			`save_flags( flags );`
352			`cli();`
353			`ha->id[j][k].lock = 1;`
354			`restore_flags( flags );`
355			`gdth_wait_completion( hanum, j, k );`
356			`gdth_stop_timeout( hanum, j, k );`
357			`} else {`
358			`save_flags( flags );`
359			`cli();`
360			`ha->id[j][k].lock = 0;`
361			`restore_flags( flags );`
362			`gdth_start_timeout( hanum, j, k );`
363			`gdth_next( hanum );`
364			`}`
365			`}`
366			`piord->size = sizeof(gdth_iord_str);`
367			`piord->status = S_OK;`
368			`break;`
369
370			`case GDTIOCTL_LOCKCHN:`
371			`id = gdth_ioctl_alloc( hanum, sizeof(gdth_iord_str) );`
372			`if (id == -1)`
373			`return(-EBUSY);`
374			`for (k = 0, j = piowr->iu.lockchn.channel; k < MAXID; ++k) {`
375			`if (ha->id[j][k].type != RAW_DTYP)`
376			`continue;`
377
378			`if (piowr->iu.lockchn.lock) {`
379			`save_flags( flags );`
380			`cli();`
381			`ha->id[j][k].lock = 1;`
382			`restore_flags( flags );`
383			`gdth_wait_completion( hanum, j, k );`
384			`gdth_stop_timeout( hanum, j, k );`
385			`} else {`
386			`save_flags( flags );`
387			`cli();`
388			`ha->id[j][k].lock = 0;`
389			`restore_flags( flags );`
390			`gdth_start_timeout( hanum, j, k );`
391			`gdth_next( hanum );`
392			`}`
393			`}`
394			`piord = (gdth_iord_str *)gdth_ioctl_tab[id-1][hanum];`
395			`piord->size = sizeof(gdth_iord_str);`
396			`piord->status = S_OK;`
397			`break;`
398
399			`case GDTIOCTL_EVENT:`
400			`id = gdth_ioctl_alloc( hanum, sizeof(gdth_iord_str) );`
401			`if (id == -1)`
402			`return(-EBUSY);`
403			`piord = (gdth_iord_str *)gdth_ioctl_tab[id-1][hanum];`
404			`if (piowr->iu.event.erase == 0) {`
405			`piord->iu.event.handle = gdth_read_event( piowr->iu.event.handle,`
406			`(gdth_evt_str *)piord->iu.event.evt );`
407			`} else {`
408			`piord->iu.event.handle = piowr->iu.event.handle;`
409			`gdth_readapp_event( (unchar)piowr->iu.event.erase,`
410			`(gdth_evt_str *)piord->iu.event.evt );`
411			`}`
412			`piord->size = sizeof(gdth_iord_str);`
413			`piord->status = S_OK;`
414			`break;`
415
416			`default:`
417			`return(-EINVAL);`
418			`}`
419			`/* we return a buffer ID to detect the right buffer during READ-IOCTL */`
420			`return id;`
421			`}`
422
423			`static int gdth_get_info(char buffer,char *start,off_t offset,`
424			`int length,int vh,int hanum,int busnum)`
425			`{`
426			`int size = 0,len = 0;`
427			`off_t begin = 0,pos = 0;`
428			`gdth_ha_str *ha;`
429			`gdth_iord_str *piord;`
430			`int id;`
431
432			`TRACE2(("gdth_get_info() ha %d bus %d\n",hanum,busnum));`
433			`ha = HADATA(gdth_ctr_tab[hanum]);`
434			`id = length;`
435
436			`/* look for buffer ID in length */`
437			`if (id > 4) {`
438			`#if LINUX_VERSION_CODE >= 0x020000`
439			`size = sprintf(buffer+len,`
440			`"%s SCSI Disk Array Controller\n",`
441			`ha->ctr_name);`
442			`#else`
443			`size = sprintf(buffer+len,`
444			`"%s SCSI Disk Array Controller (SCSI Bus %d)\n",`
445			`ha->ctr_name,busnum);`
446			`#endif`
447			`len += size; pos = begin + len;`
448			`size = sprintf(buffer+len,`
449			`"Firmware Version: %d.%2d\tDriver Version: %s\n",`
450			`(unchar)(ha->cpar.version>>8),`
451			`(unchar)(ha->cpar.version),GDTH_VERSION_STR);`
452			`len += size; pos = begin + len;`
453
454			`if (pos < offset) {`
455			`len = 0;`
456			`begin = pos;`
457			`}`
458			`if (pos > offset + length)`
459			`goto stop_output;`
460
461			`} else {`
462			`piord = (gdth_iord_str *)gdth_ioctl_tab[id-1][hanum];`
463			`if (piord == NULL)`
464			`goto stop_output;`
465			`length = piord->size;`
466			`memcpy(buffer+len, (char *)piord, length);`
467			`gdth_ioctl_free(hanum, id);`
468			`len += length; pos = begin + len;`
469
470			`if (pos < offset) {`
471			`len = 0;`
472			`begin = pos;`
473			`}`
474			`if (pos > offset + length)`
475			`goto stop_output;`
476			`}`
477
478			`stop_output:`
479			`*start = buffer +(offset-begin);`
480			`len -= (offset-begin);`
481			`if (len > length)`
482			`len = length;`
483			`TRACE2(("get_info() len %d pos %d begin %d offset %d length %d size %d\n",`
484			`len,(int)pos,(int)begin,(int)offset,length,size));`
485			`return(len);`
486			`}`
487
488
489			`void gdth_scsi_done(Scsi_Cmnd *scp)`
490			`{`
491			`TRACE2(("gdth_scsi_done()\n"));`
492
493			`scp->request.rq_status = RQ_SCSI_DONE;`
494
495			`if (scp->request.sem != NULL)`
496			`up(scp->request.sem);`
497			`}`
498
499			`static int gdth_ioctl_alloc(int hanum, ushort size)`
500			`{`
501			`ulong flags;`
502			`int i;`
503
504			`if (size == 0)`
505			`return -1;`
506
507			`save_flags(flags);`
508			`cli();`
509
510			`for (i = 0; i < 4; ++i) {`
511			`if (gdth_ioctl_tab[i][hanum] == NULL) {`
512			`gdth_ioctl_tab[i][hanum] = kmalloc( size, GFP_ATOMIC \| GFP_DMA );`
513			`break;`
514			`}`
515			`}`
516
517			`restore_flags(flags);`
518			`if (i == 4 \|\| gdth_ioctl_tab[i][hanum] == NULL)`
519			`return -1;`
520			`return (i+1);`
521			`}`
522
523			`static void gdth_ioctl_free(int hanum, int idx)`
524			`{`
525			`ulong flags;`
526
527			`save_flags(flags);`
528			`cli();`
529
530			`kfree( gdth_ioctl_tab[idx-1][hanum] );`
531			`gdth_ioctl_tab[idx-1][hanum] = NULL;`
532
533			`restore_flags(flags);`
534			`}`
535
536			`static void gdth_wait_completion(int hanum, int busnum, int id)`
537			`{`
538			`ulong flags;`
539			`int i;`
540			`Scsi_Cmnd *scp;`
541
542			`save_flags(flags);`
543			`cli();`
544
545			`for (i = 0; i < GDTH_MAXCMDS; ++i) {`
546			`scp = gdth_cmd_tab[i][hanum].cmnd;`
547			`#if LINUX_VERSION_CODE >= 0x020000`
548			`if (!SPECIAL_SCP(scp) && scp->target == (unchar)id &&`
549			`scp->channel == (unchar)busnum)`
550			`#else`
551			`if (!SPECIAL_SCP(scp) && scp->target == (unchar)id &&`
552			`NUMDATA(scp->host)->busnum == (unchar)busnum)`
553			`#endif`
554			`{`
555			`scp->SCp.have_data_in = 0;`
556			`restore_flags(flags);`
557			`while (!scp->SCp.have_data_in)`
558			`barrier();`
559			`scp->scsi_done(scp);`
560			`save_flags(flags);`
561			`cli();`
562			`}`
563			`}`
564			`restore_flags(flags);`
565			`}`
566
567			`static void gdth_stop_timeout(int hanum, int busnum, int id)`
568			`{`
569			`ulong flags;`
570			`Scsi_Cmnd *scp;`
571			`gdth_ha_str *ha;`
572
573			`save_flags(flags);`
574			`cli();`
575			`ha = HADATA(gdth_ctr_tab[hanum]);`
576
577			`for (scp = ha->req_first; scp; scp = (Scsi_Cmnd *)scp->SCp.ptr) {`
578			`#if LINUX_VERSION_CODE >= 0x020000`
579			`if (scp->target == (unchar)id &&`
580			`scp->channel == (unchar)busnum)`
581			`#else`
582			`if (scp->target == (unchar)id &&`
583			`NUMDATA(scp->host)->busnum == (unchar)busnum)`
584			`#endif`
585			`{`
586			`TRACE2(("gdth_stop_timeout(): update_timeout()\n"));`
587			`scp->SCp.buffers_residual = gdth_update_timeout(hanum, scp, 0);`
588			`}`
589			`}`
590			`restore_flags(flags);`
591			`}`
592
593			`static void gdth_start_timeout(int hanum, int busnum, int id)`
594			`{`
595			`ulong flags;`
596			`Scsi_Cmnd *scp;`
597			`gdth_ha_str *ha;`
598
599			`save_flags(flags);`
600			`cli();`
601			`ha = HADATA(gdth_ctr_tab[hanum]);`
602
603			`for (scp = ha->req_first; scp; scp = (Scsi_Cmnd *)scp->SCp.ptr) {`
604			`#if LINUX_VERSION_CODE >= 0x020000`
605			`if (scp->target == (unchar)id &&`
606			`scp->channel == (unchar)busnum)`
607			`#else`
608			`if (scp->target == (unchar)id &&`
609			`NUMDATA(scp->host)->busnum == (unchar)busnum)`
610			`#endif`
611			`{`
612			`TRACE2(("gdth_start_timeout(): update_timeout()\n"));`
613			`gdth_update_timeout(hanum, scp, scp->SCp.buffers_residual);`
614			`}`
615			`}`
616			`restore_flags(flags);`
617			`}`
618
619			`static int gdth_update_timeout(int hanum, Scsi_Cmnd *scp, int timeout)`
620			`{`
621			`ulong flags;`
622			`int oldto;`
623
624			`save_flags(flags);`
625			`cli();`
626			`oldto = scp->timeout_per_command;`
627			`scp->timeout_per_command = timeout;`
628
629			`#if LINUX_VERSION_CODE >= 0x02014B`
630			`if (timeout == 0) {`
631			`del_timer(&scp->eh_timeout);`
632			`scp->eh_timeout.data = (unsigned long) NULL;`
633			`scp->eh_timeout.expires = 0;`
634			`} else {`
635			`if (scp->eh_timeout.data != (unsigned long) NULL)`
636			`del_timer(&scp->eh_timeout);`
637			`scp->eh_timeout.data = (unsigned long) scp;`
638			`scp->eh_timeout.expires = jiffies + timeout;`
639			`add_timer(&scp->eh_timeout);`
640			`}`
641			`#else`
642			`if (timeout > 0) {`
643			`if (timer_table[SCSI_TIMER].expires == 0) {`
644			`timer_table[SCSI_TIMER].expires = jiffies + timeout;`
645			`timer_active \|= 1 << SCSI_TIMER;`
646			`} else {`
647			`if (jiffies + timeout < timer_table[SCSI_TIMER].expires)`
648			`timer_table[SCSI_TIMER].expires = jiffies + timeout;`
649			`}`
650			`}`
651			`#endif`
652
653			`restore_flags(flags);`
654			`return oldto;`
655			`}`
656