linux/drivers/scsi/gdth.c
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   1/************************************************************************
   2 * Linux driver for                                                     *  
   3 * ICP vortex GmbH:    GDT ISA/EISA/PCI Disk Array Controllers          *
   4 * Intel Corporation:  Storage RAID Controllers                         *
   5 *                                                                      *
   6 * gdth.c                                                               *
   7 * Copyright (C) 1995-06 ICP vortex GmbH, Achim Leubner                 *
   8 * Copyright (C) 2002-04 Intel Corporation                              *
   9 * Copyright (C) 2003-06 Adaptec Inc.                                   *
  10 * <achim_leubner@adaptec.com>                                          *
  11 *                                                                      *
  12 * Additions/Fixes:                                                     *
  13 * Boji Tony Kannanthanam <boji.t.kannanthanam@intel.com>               *
  14 * Johannes Dinner <johannes_dinner@adaptec.com>                        *
  15 *                                                                      *
  16 * This program is free software; you can redistribute it and/or modify *
  17 * it under the terms of the GNU General Public License as published    *
  18 * by the Free Software Foundation; either version 2 of the License,    *
  19 * or (at your option) any later version.                               *
  20 *                                                                      *
  21 * This program is distributed in the hope that it will be useful,      *
  22 * but WITHOUT ANY WARRANTY; without even the implied warranty of       *
  23 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the         *
  24 * GNU General Public License for more details.                         *
  25 *                                                                      *
  26 * You should have received a copy of the GNU General Public License    *
  27 * along with this kernel; if not, write to the Free Software           *
  28 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.            *
  29 *                                                                      *
  30 * Linux kernel 2.6.x supported                                         *
  31 *                                                                      *
  32 ************************************************************************/
  33
  34/* All GDT Disk Array Controllers are fully supported by this driver.
  35 * This includes the PCI/EISA/ISA SCSI Disk Array Controllers and the
  36 * PCI Fibre Channel Disk Array Controllers. See gdth.h for a complete
  37 * list of all controller types.
  38 * 
  39 * If you have one or more GDT3000/3020 EISA controllers with 
  40 * controller BIOS disabled, you have to set the IRQ values with the 
  41 * command line option "gdth=irq1,irq2,...", where the irq1,irq2,... are
  42 * the IRQ values for the EISA controllers.
  43 * 
  44 * After the optional list of IRQ values, other possible 
  45 * command line options are:
  46 * disable:Y                    disable driver
  47 * disable:N                    enable driver
  48 * reserve_mode:0               reserve no drives for the raw service
  49 * reserve_mode:1               reserve all not init., removable drives
  50 * reserve_mode:2               reserve all not init. drives
  51 * reserve_list:h,b,t,l,h,b,t,l,...     reserve particular drive(s) with 
  52 *                              h- controller no., b- channel no., 
  53 *                              t- target ID, l- LUN
  54 * reverse_scan:Y               reverse scan order for PCI controllers         
  55 * reverse_scan:N               scan PCI controllers like BIOS
  56 * max_ids:x                    x - target ID count per channel (1..MAXID)
  57 * rescan:Y                     rescan all channels/IDs 
  58 * rescan:N                     use all devices found until now
  59 * hdr_channel:x                x - number of virtual bus for host drives
  60 * shared_access:Y              disable driver reserve/release protocol to 
  61 *                              access a shared resource from several nodes, 
  62 *                              appropriate controller firmware required
  63 * shared_access:N              enable driver reserve/release protocol
  64 * probe_eisa_isa:Y             scan for EISA/ISA controllers
  65 * probe_eisa_isa:N             do not scan for EISA/ISA controllers
  66 * force_dma32:Y                use only 32 bit DMA mode
  67 * force_dma32:N                use 64 bit DMA mode, if supported
  68 *
  69 * The default values are: "gdth=disable:N,reserve_mode:1,reverse_scan:N,
  70 *                          max_ids:127,rescan:N,hdr_channel:0,
  71 *                          shared_access:Y,probe_eisa_isa:N,force_dma32:N".
  72 * Here is another example: "gdth=reserve_list:0,1,2,0,0,1,3,0,rescan:Y".
  73 * 
  74 * When loading the gdth driver as a module, the same options are available. 
  75 * You can set the IRQs with "IRQ=...". However, the syntax to specify the
  76 * options changes slightly. You must replace all ',' between options 
  77 * with ' ' and all ':' with '=' and you must use 
  78 * '1' in place of 'Y' and '0' in place of 'N'.
  79 * 
  80 * Default: "modprobe gdth disable=0 reserve_mode=1 reverse_scan=0
  81 *           max_ids=127 rescan=0 hdr_channel=0 shared_access=0
  82 *           probe_eisa_isa=0 force_dma32=0"
  83 * The other example: "modprobe gdth reserve_list=0,1,2,0,0,1,3,0 rescan=1".
  84 */
  85
  86/* The meaning of the Scsi_Pointer members in this driver is as follows:
  87 * ptr:                     Chaining
  88 * this_residual:           unused
  89 * buffer:                  unused
  90 * dma_handle:              unused
  91 * buffers_residual:        unused
  92 * Status:                  unused
  93 * Message:                 unused
  94 * have_data_in:            unused
  95 * sent_command:            unused
  96 * phase:                   unused
  97 */
  98
  99
 100/* interrupt coalescing */
 101/* #define INT_COAL */
 102
 103/* statistics */
 104#define GDTH_STATISTICS
 105
 106#include <linux/module.h>
 107
 108#include <linux/version.h>
 109#include <linux/kernel.h>
 110#include <linux/types.h>
 111#include <linux/pci.h>
 112#include <linux/string.h>
 113#include <linux/ctype.h>
 114#include <linux/ioport.h>
 115#include <linux/delay.h>
 116#include <linux/interrupt.h>
 117#include <linux/in.h>
 118#include <linux/proc_fs.h>
 119#include <linux/time.h>
 120#include <linux/timer.h>
 121#include <linux/dma-mapping.h>
 122#include <linux/list.h>
 123#include <linux/smp_lock.h>
 124#include <linux/slab.h>
 125
 126#ifdef GDTH_RTC
 127#include <linux/mc146818rtc.h>
 128#endif
 129#include <linux/reboot.h>
 130
 131#include <asm/dma.h>
 132#include <asm/system.h>
 133#include <asm/io.h>
 134#include <asm/uaccess.h>
 135#include <linux/spinlock.h>
 136#include <linux/blkdev.h>
 137#include <linux/scatterlist.h>
 138
 139#include "scsi.h"
 140#include <scsi/scsi_host.h>
 141#include "gdth.h"
 142
 143static void gdth_delay(int milliseconds);
 144static void gdth_eval_mapping(u32 size, u32 *cyls, int *heads, int *secs);
 145static irqreturn_t gdth_interrupt(int irq, void *dev_id);
 146static irqreturn_t __gdth_interrupt(gdth_ha_str *ha,
 147                                    int gdth_from_wait, int* pIndex);
 148static int gdth_sync_event(gdth_ha_str *ha, int service, u8 index,
 149                                                               Scsi_Cmnd *scp);
 150static int gdth_async_event(gdth_ha_str *ha);
 151static void gdth_log_event(gdth_evt_data *dvr, char *buffer);
 152
 153static void gdth_putq(gdth_ha_str *ha, Scsi_Cmnd *scp, u8 priority);
 154static void gdth_next(gdth_ha_str *ha);
 155static int gdth_fill_raw_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp, u8 b);
 156static int gdth_special_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp);
 157static gdth_evt_str *gdth_store_event(gdth_ha_str *ha, u16 source,
 158                                      u16 idx, gdth_evt_data *evt);
 159static int gdth_read_event(gdth_ha_str *ha, int handle, gdth_evt_str *estr);
 160static void gdth_readapp_event(gdth_ha_str *ha, u8 application, 
 161                               gdth_evt_str *estr);
 162static void gdth_clear_events(void);
 163
 164static void gdth_copy_internal_data(gdth_ha_str *ha, Scsi_Cmnd *scp,
 165                                    char *buffer, u16 count);
 166static int gdth_internal_cache_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp);
 167static int gdth_fill_cache_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp, u16 hdrive);
 168
 169static void gdth_enable_int(gdth_ha_str *ha);
 170static int gdth_test_busy(gdth_ha_str *ha);
 171static int gdth_get_cmd_index(gdth_ha_str *ha);
 172static void gdth_release_event(gdth_ha_str *ha);
 173static int gdth_wait(gdth_ha_str *ha, int index,u32 time);
 174static int gdth_internal_cmd(gdth_ha_str *ha, u8 service, u16 opcode,
 175                                             u32 p1, u64 p2,u64 p3);
 176static int gdth_search_drives(gdth_ha_str *ha);
 177static int gdth_analyse_hdrive(gdth_ha_str *ha, u16 hdrive);
 178
 179static const char *gdth_ctr_name(gdth_ha_str *ha);
 180
 181static int gdth_open(struct inode *inode, struct file *filep);
 182static int gdth_close(struct inode *inode, struct file *filep);
 183static long gdth_unlocked_ioctl(struct file *filep, unsigned int cmd,
 184                                unsigned long arg);
 185
 186static void gdth_flush(gdth_ha_str *ha);
 187static int gdth_queuecommand(Scsi_Cmnd *scp,void (*done)(Scsi_Cmnd *));
 188static int __gdth_queuecommand(gdth_ha_str *ha, struct scsi_cmnd *scp,
 189                                struct gdth_cmndinfo *cmndinfo);
 190static void gdth_scsi_done(struct scsi_cmnd *scp);
 191
 192#ifdef DEBUG_GDTH
 193static u8   DebugState = DEBUG_GDTH;
 194
 195#ifdef __SERIAL__
 196#define MAX_SERBUF 160
 197static void ser_init(void);
 198static void ser_puts(char *str);
 199static void ser_putc(char c);
 200static int  ser_printk(const char *fmt, ...);
 201static char strbuf[MAX_SERBUF+1];
 202#ifdef __COM2__
 203#define COM_BASE 0x2f8
 204#else
 205#define COM_BASE 0x3f8
 206#endif
 207static void ser_init()
 208{
 209    unsigned port=COM_BASE;
 210
 211    outb(0x80,port+3);
 212    outb(0,port+1);
 213    /* 19200 Baud, if 9600: outb(12,port) */
 214    outb(6, port);
 215    outb(3,port+3);
 216    outb(0,port+1);
 217    /*
 218    ser_putc('I');
 219    ser_putc(' ');
 220    */
 221}
 222
 223static void ser_puts(char *str)
 224{
 225    char *ptr;
 226
 227    ser_init();
 228    for (ptr=str;*ptr;++ptr)
 229        ser_putc(*ptr);
 230}
 231
 232static void ser_putc(char c)
 233{
 234    unsigned port=COM_BASE;
 235
 236    while ((inb(port+5) & 0x20)==0);
 237    outb(c,port);
 238    if (c==0x0a)
 239    {
 240        while ((inb(port+5) & 0x20)==0);
 241        outb(0x0d,port);
 242    }
 243}
 244
 245static int ser_printk(const char *fmt, ...)
 246{
 247    va_list args;
 248    int i;
 249
 250    va_start(args,fmt);
 251    i = vsprintf(strbuf,fmt,args);
 252    ser_puts(strbuf);
 253    va_end(args);
 254    return i;
 255}
 256
 257#define TRACE(a)    {if (DebugState==1) {ser_printk a;}}
 258#define TRACE2(a)   {if (DebugState==1 || DebugState==2) {ser_printk a;}}
 259#define TRACE3(a)   {if (DebugState!=0) {ser_printk a;}}
 260
 261#else /* !__SERIAL__ */
 262#define TRACE(a)    {if (DebugState==1) {printk a;}}
 263#define TRACE2(a)   {if (DebugState==1 || DebugState==2) {printk a;}}
 264#define TRACE3(a)   {if (DebugState!=0) {printk a;}}
 265#endif
 266
 267#else /* !DEBUG */
 268#define TRACE(a)
 269#define TRACE2(a)
 270#define TRACE3(a)
 271#endif
 272
 273#ifdef GDTH_STATISTICS
 274static u32 max_rq=0, max_index=0, max_sg=0;
 275#ifdef INT_COAL
 276static u32 max_int_coal=0;
 277#endif
 278static u32 act_ints=0, act_ios=0, act_stats=0, act_rq=0;
 279static struct timer_list gdth_timer;
 280#endif
 281
 282#define PTR2USHORT(a)   (u16)(unsigned long)(a)
 283#define GDTOFFSOF(a,b)  (size_t)&(((a*)0)->b)
 284#define INDEX_OK(i,t)   ((i)<ARRAY_SIZE(t))
 285
 286#define BUS_L2P(a,b)    ((b)>(a)->virt_bus ? (b-1):(b))
 287
 288#ifdef CONFIG_ISA
 289static u8   gdth_drq_tab[4] = {5,6,7,7};            /* DRQ table */
 290#endif
 291#if defined(CONFIG_EISA) || defined(CONFIG_ISA)
 292static u8   gdth_irq_tab[6] = {0,10,11,12,14,0};    /* IRQ table */
 293#endif
 294static u8   gdth_polling;                           /* polling if TRUE */
 295static int      gdth_ctr_count  = 0;                    /* controller count */
 296static LIST_HEAD(gdth_instances);                       /* controller list */
 297static u8   gdth_write_through = FALSE;             /* write through */
 298static gdth_evt_str ebuffer[MAX_EVENTS];                /* event buffer */
 299static int elastidx;
 300static int eoldidx;
 301static int major;
 302
 303#define DIN     1                               /* IN data direction */
 304#define DOU     2                               /* OUT data direction */
 305#define DNO     DIN                             /* no data transfer */
 306#define DUN     DIN                             /* unknown data direction */
 307static u8 gdth_direction_tab[0x100] = {
 308    DNO,DNO,DIN,DIN,DOU,DIN,DIN,DOU,DIN,DUN,DOU,DOU,DUN,DUN,DUN,DIN,
 309    DNO,DIN,DIN,DOU,DIN,DOU,DNO,DNO,DOU,DNO,DIN,DNO,DIN,DOU,DNO,DUN,
 310    DIN,DUN,DIN,DUN,DOU,DIN,DUN,DUN,DIN,DIN,DOU,DNO,DUN,DIN,DOU,DOU,
 311    DOU,DOU,DOU,DNO,DIN,DNO,DNO,DIN,DOU,DOU,DOU,DOU,DIN,DOU,DIN,DOU,
 312    DOU,DOU,DIN,DIN,DIN,DNO,DUN,DNO,DNO,DNO,DUN,DNO,DOU,DIN,DUN,DUN,
 313    DUN,DUN,DUN,DUN,DUN,DOU,DUN,DUN,DUN,DUN,DIN,DUN,DUN,DUN,DUN,DUN,
 314    DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
 315    DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
 316    DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DIN,DUN,DOU,DUN,DUN,DUN,DUN,DUN,
 317    DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DIN,DUN,
 318    DUN,DUN,DUN,DUN,DUN,DNO,DNO,DUN,DIN,DNO,DOU,DUN,DNO,DUN,DOU,DOU,
 319    DOU,DOU,DOU,DNO,DUN,DIN,DOU,DIN,DIN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
 320    DUN,DUN,DOU,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
 321    DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
 322    DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DOU,DUN,DUN,DUN,DUN,DUN,
 323    DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN
 324};
 325
 326/* LILO and modprobe/insmod parameters */
 327/* IRQ list for GDT3000/3020 EISA controllers */
 328static int irq[MAXHA] __initdata = 
 329{0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
 330 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff};
 331/* disable driver flag */
 332static int disable __initdata = 0;
 333/* reserve flag */
 334static int reserve_mode = 1;                  
 335/* reserve list */
 336static int reserve_list[MAX_RES_ARGS] = 
 337{0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
 338 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
 339 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff};
 340/* scan order for PCI controllers */
 341static int reverse_scan = 0;
 342/* virtual channel for the host drives */
 343static int hdr_channel = 0;
 344/* max. IDs per channel */
 345static int max_ids = MAXID;
 346/* rescan all IDs */
 347static int rescan = 0;
 348/* shared access */
 349static int shared_access = 1;
 350/* enable support for EISA and ISA controllers */
 351static int probe_eisa_isa = 0;
 352/* 64 bit DMA mode, support for drives > 2 TB, if force_dma32 = 0 */
 353static int force_dma32 = 0;
 354
 355/* parameters for modprobe/insmod */
 356module_param_array(irq, int, NULL, 0);
 357module_param(disable, int, 0);
 358module_param(reserve_mode, int, 0);
 359module_param_array(reserve_list, int, NULL, 0);
 360module_param(reverse_scan, int, 0);
 361module_param(hdr_channel, int, 0);
 362module_param(max_ids, int, 0);
 363module_param(rescan, int, 0);
 364module_param(shared_access, int, 0);
 365module_param(probe_eisa_isa, int, 0);
 366module_param(force_dma32, int, 0);
 367MODULE_AUTHOR("Achim Leubner");
 368MODULE_LICENSE("GPL");
 369
 370/* ioctl interface */
 371static const struct file_operations gdth_fops = {
 372    .unlocked_ioctl   = gdth_unlocked_ioctl,
 373    .open    = gdth_open,
 374    .release = gdth_close,
 375};
 376
 377#include "gdth_proc.h"
 378#include "gdth_proc.c"
 379
 380static gdth_ha_str *gdth_find_ha(int hanum)
 381{
 382        gdth_ha_str *ha;
 383
 384        list_for_each_entry(ha, &gdth_instances, list)
 385                if (hanum == ha->hanum)
 386                        return ha;
 387
 388        return NULL;
 389}
 390
 391static struct gdth_cmndinfo *gdth_get_cmndinfo(gdth_ha_str *ha)
 392{
 393        struct gdth_cmndinfo *priv = NULL;
 394        unsigned long flags;
 395        int i;
 396
 397        spin_lock_irqsave(&ha->smp_lock, flags);
 398
 399        for (i=0; i<GDTH_MAXCMDS; ++i) {
 400                if (ha->cmndinfo[i].index == 0) {
 401                        priv = &ha->cmndinfo[i];
 402                        memset(priv, 0, sizeof(*priv));
 403                        priv->index = i+1;
 404                        break;
 405                }
 406        }
 407
 408        spin_unlock_irqrestore(&ha->smp_lock, flags);
 409
 410        return priv;
 411}
 412
 413static void gdth_put_cmndinfo(struct gdth_cmndinfo *priv)
 414{
 415        BUG_ON(!priv);
 416        priv->index = 0;
 417}
 418
 419static void gdth_delay(int milliseconds)
 420{
 421    if (milliseconds == 0) {
 422        udelay(1);
 423    } else {
 424        mdelay(milliseconds);
 425    }
 426}
 427
 428static void gdth_scsi_done(struct scsi_cmnd *scp)
 429{
 430        struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
 431        int internal_command = cmndinfo->internal_command;
 432
 433        TRACE2(("gdth_scsi_done()\n"));
 434
 435        gdth_put_cmndinfo(cmndinfo);
 436        scp->host_scribble = NULL;
 437
 438        if (internal_command)
 439                complete((struct completion *)scp->request);
 440        else
 441                scp->scsi_done(scp);
 442}
 443
 444int __gdth_execute(struct scsi_device *sdev, gdth_cmd_str *gdtcmd, char *cmnd,
 445                   int timeout, u32 *info)
 446{
 447    gdth_ha_str *ha = shost_priv(sdev->host);
 448    Scsi_Cmnd *scp;
 449    struct gdth_cmndinfo cmndinfo;
 450    DECLARE_COMPLETION_ONSTACK(wait);
 451    int rval;
 452
 453    scp = kzalloc(sizeof(*scp), GFP_KERNEL);
 454    if (!scp)
 455        return -ENOMEM;
 456
 457    scp->sense_buffer = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL);
 458    if (!scp->sense_buffer) {
 459        kfree(scp);
 460        return -ENOMEM;
 461    }
 462
 463    scp->device = sdev;
 464    memset(&cmndinfo, 0, sizeof(cmndinfo));
 465
 466    /* use request field to save the ptr. to completion struct. */
 467    scp->request = (struct request *)&wait;
 468    scp->cmd_len = 12;
 469    scp->cmnd = cmnd;
 470    cmndinfo.priority = IOCTL_PRI;
 471    cmndinfo.internal_cmd_str = gdtcmd;
 472    cmndinfo.internal_command = 1;
 473
 474    TRACE(("__gdth_execute() cmd 0x%x\n", scp->cmnd[0]));
 475    __gdth_queuecommand(ha, scp, &cmndinfo);
 476
 477    wait_for_completion(&wait);
 478
 479    rval = cmndinfo.status;
 480    if (info)
 481        *info = cmndinfo.info;
 482    kfree(scp->sense_buffer);
 483    kfree(scp);
 484    return rval;
 485}
 486
 487int gdth_execute(struct Scsi_Host *shost, gdth_cmd_str *gdtcmd, char *cmnd,
 488                 int timeout, u32 *info)
 489{
 490    struct scsi_device *sdev = scsi_get_host_dev(shost);
 491    int rval = __gdth_execute(sdev, gdtcmd, cmnd, timeout, info);
 492
 493    scsi_free_host_dev(sdev);
 494    return rval;
 495}
 496
 497static void gdth_eval_mapping(u32 size, u32 *cyls, int *heads, int *secs)
 498{
 499    *cyls = size /HEADS/SECS;
 500    if (*cyls <= MAXCYLS) {
 501        *heads = HEADS;
 502        *secs = SECS;
 503    } else {                                        /* too high for 64*32 */
 504        *cyls = size /MEDHEADS/MEDSECS;
 505        if (*cyls <= MAXCYLS) {
 506            *heads = MEDHEADS;
 507            *secs = MEDSECS;
 508        } else {                                    /* too high for 127*63 */
 509            *cyls = size /BIGHEADS/BIGSECS;
 510            *heads = BIGHEADS;
 511            *secs = BIGSECS;
 512        }
 513    }
 514}
 515
 516/* controller search and initialization functions */
 517#ifdef CONFIG_EISA
 518static int __init gdth_search_eisa(u16 eisa_adr)
 519{
 520    u32 id;
 521    
 522    TRACE(("gdth_search_eisa() adr. %x\n",eisa_adr));
 523    id = inl(eisa_adr+ID0REG);
 524    if (id == GDT3A_ID || id == GDT3B_ID) {     /* GDT3000A or GDT3000B */
 525        if ((inb(eisa_adr+EISAREG) & 8) == 0)   
 526            return 0;                           /* not EISA configured */
 527        return 1;
 528    }
 529    if (id == GDT3_ID)                          /* GDT3000 */
 530        return 1;
 531
 532    return 0;                                   
 533}
 534#endif /* CONFIG_EISA */
 535
 536#ifdef CONFIG_ISA
 537static int __init gdth_search_isa(u32 bios_adr)
 538{
 539    void __iomem *addr;
 540    u32 id;
 541
 542    TRACE(("gdth_search_isa() bios adr. %x\n",bios_adr));
 543    if ((addr = ioremap(bios_adr+BIOS_ID_OFFS, sizeof(u32))) != NULL) {
 544        id = readl(addr);
 545        iounmap(addr);
 546        if (id == GDT2_ID)                          /* GDT2000 */
 547            return 1;
 548    }
 549    return 0;
 550}
 551#endif /* CONFIG_ISA */
 552
 553#ifdef CONFIG_PCI
 554
 555static bool gdth_search_vortex(u16 device)
 556{
 557        if (device <= PCI_DEVICE_ID_VORTEX_GDT6555)
 558                return true;
 559        if (device >= PCI_DEVICE_ID_VORTEX_GDT6x17RP &&
 560            device <= PCI_DEVICE_ID_VORTEX_GDTMAXRP)
 561                return true;
 562        if (device == PCI_DEVICE_ID_VORTEX_GDTNEWRX ||
 563            device == PCI_DEVICE_ID_VORTEX_GDTNEWRX2)
 564                return true;
 565        return false;
 566}
 567
 568static int gdth_pci_probe_one(gdth_pci_str *pcistr, gdth_ha_str **ha_out);
 569static int gdth_pci_init_one(struct pci_dev *pdev,
 570                             const struct pci_device_id *ent);
 571static void gdth_pci_remove_one(struct pci_dev *pdev);
 572static void gdth_remove_one(gdth_ha_str *ha);
 573
 574/* Vortex only makes RAID controllers.
 575 * We do not really want to specify all 550 ids here, so wildcard match.
 576 */
 577static const struct pci_device_id gdthtable[] = {
 578        { PCI_VDEVICE(VORTEX, PCI_ANY_ID) },
 579        { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_SRC) },
 580        { PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_SRC_XSCALE) },
 581        { }     /* terminate list */
 582};
 583MODULE_DEVICE_TABLE(pci, gdthtable);
 584
 585static struct pci_driver gdth_pci_driver = {
 586        .name           = "gdth",
 587        .id_table       = gdthtable,
 588        .probe          = gdth_pci_init_one,
 589        .remove         = gdth_pci_remove_one,
 590};
 591
 592static void __devexit gdth_pci_remove_one(struct pci_dev *pdev)
 593{
 594        gdth_ha_str *ha = pci_get_drvdata(pdev);
 595
 596        pci_set_drvdata(pdev, NULL);
 597
 598        list_del(&ha->list);
 599        gdth_remove_one(ha);
 600
 601        pci_disable_device(pdev);
 602}
 603
 604static int __devinit gdth_pci_init_one(struct pci_dev *pdev,
 605                                       const struct pci_device_id *ent)
 606{
 607        u16 vendor = pdev->vendor;
 608        u16 device = pdev->device;
 609        unsigned long base0, base1, base2;
 610        int rc;
 611        gdth_pci_str gdth_pcistr;
 612        gdth_ha_str *ha = NULL;
 613    
 614        TRACE(("gdth_search_dev() cnt %d vendor %x device %x\n",
 615               gdth_ctr_count, vendor, device));
 616
 617        memset(&gdth_pcistr, 0, sizeof(gdth_pcistr));
 618
 619        if (vendor == PCI_VENDOR_ID_VORTEX && !gdth_search_vortex(device))
 620                return -ENODEV;
 621
 622        rc = pci_enable_device(pdev);
 623        if (rc)
 624                return rc;
 625
 626        if (gdth_ctr_count >= MAXHA)
 627                return -EBUSY;
 628
 629        /* GDT PCI controller found, resources are already in pdev */
 630        gdth_pcistr.pdev = pdev;
 631        base0 = pci_resource_flags(pdev, 0);
 632        base1 = pci_resource_flags(pdev, 1);
 633        base2 = pci_resource_flags(pdev, 2);
 634        if (device <= PCI_DEVICE_ID_VORTEX_GDT6000B ||   /* GDT6000/B */
 635            device >= PCI_DEVICE_ID_VORTEX_GDT6x17RP) {  /* MPR */
 636            if (!(base0 & IORESOURCE_MEM)) 
 637                return -ENODEV;
 638            gdth_pcistr.dpmem = pci_resource_start(pdev, 0);
 639        } else {                                  /* GDT6110, GDT6120, .. */
 640            if (!(base0 & IORESOURCE_MEM) ||
 641                !(base2 & IORESOURCE_MEM) ||
 642                !(base1 & IORESOURCE_IO)) 
 643                return -ENODEV;
 644            gdth_pcistr.dpmem = pci_resource_start(pdev, 2);
 645            gdth_pcistr.io    = pci_resource_start(pdev, 1);
 646        }
 647        TRACE2(("Controller found at %d/%d, irq %d, dpmem 0x%lx\n",
 648                gdth_pcistr.pdev->bus->number,
 649                PCI_SLOT(gdth_pcistr.pdev->devfn),
 650                gdth_pcistr.irq,
 651                gdth_pcistr.dpmem));
 652
 653        rc = gdth_pci_probe_one(&gdth_pcistr, &ha);
 654        if (rc)
 655                return rc;
 656
 657        return 0;
 658}
 659#endif /* CONFIG_PCI */
 660
 661#ifdef CONFIG_EISA
 662static int __init gdth_init_eisa(u16 eisa_adr,gdth_ha_str *ha)
 663{
 664    u32 retries,id;
 665    u8 prot_ver,eisacf,i,irq_found;
 666
 667    TRACE(("gdth_init_eisa() adr. %x\n",eisa_adr));
 668    
 669    /* disable board interrupts, deinitialize services */
 670    outb(0xff,eisa_adr+EDOORREG);
 671    outb(0x00,eisa_adr+EDENABREG);
 672    outb(0x00,eisa_adr+EINTENABREG);
 673    
 674    outb(0xff,eisa_adr+LDOORREG);
 675    retries = INIT_RETRIES;
 676    gdth_delay(20);
 677    while (inb(eisa_adr+EDOORREG) != 0xff) {
 678        if (--retries == 0) {
 679            printk("GDT-EISA: Initialization error (DEINIT failed)\n");
 680            return 0;
 681        }
 682        gdth_delay(1);
 683        TRACE2(("wait for DEINIT: retries=%d\n",retries));
 684    }
 685    prot_ver = inb(eisa_adr+MAILBOXREG);
 686    outb(0xff,eisa_adr+EDOORREG);
 687    if (prot_ver != PROTOCOL_VERSION) {
 688        printk("GDT-EISA: Illegal protocol version\n");
 689        return 0;
 690    }
 691    ha->bmic = eisa_adr;
 692    ha->brd_phys = (u32)eisa_adr >> 12;
 693
 694    outl(0,eisa_adr+MAILBOXREG);
 695    outl(0,eisa_adr+MAILBOXREG+4);
 696    outl(0,eisa_adr+MAILBOXREG+8);
 697    outl(0,eisa_adr+MAILBOXREG+12);
 698
 699    /* detect IRQ */ 
 700    if ((id = inl(eisa_adr+ID0REG)) == GDT3_ID) {
 701        ha->oem_id = OEM_ID_ICP;
 702        ha->type = GDT_EISA;
 703        ha->stype = id;
 704        outl(1,eisa_adr+MAILBOXREG+8);
 705        outb(0xfe,eisa_adr+LDOORREG);
 706        retries = INIT_RETRIES;
 707        gdth_delay(20);
 708        while (inb(eisa_adr+EDOORREG) != 0xfe) {
 709            if (--retries == 0) {
 710                printk("GDT-EISA: Initialization error (get IRQ failed)\n");
 711                return 0;
 712            }
 713            gdth_delay(1);
 714        }
 715        ha->irq = inb(eisa_adr+MAILBOXREG);
 716        outb(0xff,eisa_adr+EDOORREG);
 717        TRACE2(("GDT3000/3020: IRQ=%d\n",ha->irq));
 718        /* check the result */
 719        if (ha->irq == 0) {
 720                TRACE2(("Unknown IRQ, use IRQ table from cmd line !\n"));
 721                for (i = 0, irq_found = FALSE; 
 722                     i < MAXHA && irq[i] != 0xff; ++i) {
 723                if (irq[i]==10 || irq[i]==11 || irq[i]==12 || irq[i]==14) {
 724                    irq_found = TRUE;
 725                    break;
 726                }
 727                }
 728            if (irq_found) {
 729                ha->irq = irq[i];
 730                irq[i] = 0;
 731                printk("GDT-EISA: Can not detect controller IRQ,\n");
 732                printk("Use IRQ setting from command line (IRQ = %d)\n",
 733                       ha->irq);
 734            } else {
 735                printk("GDT-EISA: Initialization error (unknown IRQ), Enable\n");
 736                printk("the controller BIOS or use command line parameters\n");
 737                return 0;
 738            }
 739        }
 740    } else {
 741        eisacf = inb(eisa_adr+EISAREG) & 7;
 742        if (eisacf > 4)                         /* level triggered */
 743            eisacf -= 4;
 744        ha->irq = gdth_irq_tab[eisacf];
 745        ha->oem_id = OEM_ID_ICP;
 746        ha->type = GDT_EISA;
 747        ha->stype = id;
 748    }
 749
 750    ha->dma64_support = 0;
 751    return 1;
 752}
 753#endif /* CONFIG_EISA */
 754
 755#ifdef CONFIG_ISA
 756static int __init gdth_init_isa(u32 bios_adr,gdth_ha_str *ha)
 757{
 758    register gdt2_dpram_str __iomem *dp2_ptr;
 759    int i;
 760    u8 irq_drq,prot_ver;
 761    u32 retries;
 762
 763    TRACE(("gdth_init_isa() bios adr. %x\n",bios_adr));
 764
 765    ha->brd = ioremap(bios_adr, sizeof(gdt2_dpram_str));
 766    if (ha->brd == NULL) {
 767        printk("GDT-ISA: Initialization error (DPMEM remap error)\n");
 768        return 0;
 769    }
 770    dp2_ptr = ha->brd;
 771    writeb(1, &dp2_ptr->io.memlock); /* switch off write protection */
 772    /* reset interface area */
 773    memset_io(&dp2_ptr->u, 0, sizeof(dp2_ptr->u));
 774    if (readl(&dp2_ptr->u) != 0) {
 775        printk("GDT-ISA: Initialization error (DPMEM write error)\n");
 776        iounmap(ha->brd);
 777        return 0;
 778    }
 779
 780    /* disable board interrupts, read DRQ and IRQ */
 781    writeb(0xff, &dp2_ptr->io.irqdel);
 782    writeb(0x00, &dp2_ptr->io.irqen);
 783    writeb(0x00, &dp2_ptr->u.ic.S_Status);
 784    writeb(0x00, &dp2_ptr->u.ic.Cmd_Index);
 785
 786    irq_drq = readb(&dp2_ptr->io.rq);
 787    for (i=0; i<3; ++i) {
 788        if ((irq_drq & 1)==0)
 789            break;
 790        irq_drq >>= 1;
 791    }
 792    ha->drq = gdth_drq_tab[i];
 793
 794    irq_drq = readb(&dp2_ptr->io.rq) >> 3;
 795    for (i=1; i<5; ++i) {
 796        if ((irq_drq & 1)==0)
 797            break;
 798        irq_drq >>= 1;
 799    }
 800    ha->irq = gdth_irq_tab[i];
 801
 802    /* deinitialize services */
 803    writel(bios_adr, &dp2_ptr->u.ic.S_Info[0]);
 804    writeb(0xff, &dp2_ptr->u.ic.S_Cmd_Indx);
 805    writeb(0, &dp2_ptr->io.event);
 806    retries = INIT_RETRIES;
 807    gdth_delay(20);
 808    while (readb(&dp2_ptr->u.ic.S_Status) != 0xff) {
 809        if (--retries == 0) {
 810            printk("GDT-ISA: Initialization error (DEINIT failed)\n");
 811            iounmap(ha->brd);
 812            return 0;
 813        }
 814        gdth_delay(1);
 815    }
 816    prot_ver = (u8)readl(&dp2_ptr->u.ic.S_Info[0]);
 817    writeb(0, &dp2_ptr->u.ic.Status);
 818    writeb(0xff, &dp2_ptr->io.irqdel);
 819    if (prot_ver != PROTOCOL_VERSION) {
 820        printk("GDT-ISA: Illegal protocol version\n");
 821        iounmap(ha->brd);
 822        return 0;
 823    }
 824
 825    ha->oem_id = OEM_ID_ICP;
 826    ha->type = GDT_ISA;
 827    ha->ic_all_size = sizeof(dp2_ptr->u);
 828    ha->stype= GDT2_ID;
 829    ha->brd_phys = bios_adr >> 4;
 830
 831    /* special request to controller BIOS */
 832    writel(0x00, &dp2_ptr->u.ic.S_Info[0]);
 833    writel(0x00, &dp2_ptr->u.ic.S_Info[1]);
 834    writel(0x01, &dp2_ptr->u.ic.S_Info[2]);
 835    writel(0x00, &dp2_ptr->u.ic.S_Info[3]);
 836    writeb(0xfe, &dp2_ptr->u.ic.S_Cmd_Indx);
 837    writeb(0, &dp2_ptr->io.event);
 838    retries = INIT_RETRIES;
 839    gdth_delay(20);
 840    while (readb(&dp2_ptr->u.ic.S_Status) != 0xfe) {
 841        if (--retries == 0) {
 842            printk("GDT-ISA: Initialization error\n");
 843            iounmap(ha->brd);
 844            return 0;
 845        }
 846        gdth_delay(1);
 847    }
 848    writeb(0, &dp2_ptr->u.ic.Status);
 849    writeb(0xff, &dp2_ptr->io.irqdel);
 850
 851    ha->dma64_support = 0;
 852    return 1;
 853}
 854#endif /* CONFIG_ISA */
 855
 856#ifdef CONFIG_PCI
 857static int __devinit gdth_init_pci(struct pci_dev *pdev, gdth_pci_str *pcistr,
 858                                   gdth_ha_str *ha)
 859{
 860    register gdt6_dpram_str __iomem *dp6_ptr;
 861    register gdt6c_dpram_str __iomem *dp6c_ptr;
 862    register gdt6m_dpram_str __iomem *dp6m_ptr;
 863    u32 retries;
 864    u8 prot_ver;
 865    u16 command;
 866    int i, found = FALSE;
 867
 868    TRACE(("gdth_init_pci()\n"));
 869
 870    if (pdev->vendor == PCI_VENDOR_ID_INTEL)
 871        ha->oem_id = OEM_ID_INTEL;
 872    else
 873        ha->oem_id = OEM_ID_ICP;
 874    ha->brd_phys = (pdev->bus->number << 8) | (pdev->devfn & 0xf8);
 875    ha->stype = (u32)pdev->device;
 876    ha->irq = pdev->irq;
 877    ha->pdev = pdev;
 878    
 879    if (ha->pdev->device <= PCI_DEVICE_ID_VORTEX_GDT6000B) {  /* GDT6000/B */
 880        TRACE2(("init_pci() dpmem %lx irq %d\n",pcistr->dpmem,ha->irq));
 881        ha->brd = ioremap(pcistr->dpmem, sizeof(gdt6_dpram_str));
 882        if (ha->brd == NULL) {
 883            printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
 884            return 0;
 885        }
 886        /* check and reset interface area */
 887        dp6_ptr = ha->brd;
 888        writel(DPMEM_MAGIC, &dp6_ptr->u);
 889        if (readl(&dp6_ptr->u) != DPMEM_MAGIC) {
 890            printk("GDT-PCI: Cannot access DPMEM at 0x%lx (shadowed?)\n", 
 891                   pcistr->dpmem);
 892            found = FALSE;
 893            for (i = 0xC8000; i < 0xE8000; i += 0x4000) {
 894                iounmap(ha->brd);
 895                ha->brd = ioremap(i, sizeof(u16)); 
 896                if (ha->brd == NULL) {
 897                    printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
 898                    return 0;
 899                }
 900                if (readw(ha->brd) != 0xffff) {
 901                    TRACE2(("init_pci_old() address 0x%x busy\n", i));
 902                    continue;
 903                }
 904                iounmap(ha->brd);
 905                pci_write_config_dword(pdev, PCI_BASE_ADDRESS_0, i);
 906                ha->brd = ioremap(i, sizeof(gdt6_dpram_str)); 
 907                if (ha->brd == NULL) {
 908                    printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
 909                    return 0;
 910                }
 911                dp6_ptr = ha->brd;
 912                writel(DPMEM_MAGIC, &dp6_ptr->u);
 913                if (readl(&dp6_ptr->u) == DPMEM_MAGIC) {
 914                    printk("GDT-PCI: Use free address at 0x%x\n", i);
 915                    found = TRUE;
 916                    break;
 917                }
 918            }   
 919            if (!found) {
 920                printk("GDT-PCI: No free address found!\n");
 921                iounmap(ha->brd);
 922                return 0;
 923            }
 924        }
 925        memset_io(&dp6_ptr->u, 0, sizeof(dp6_ptr->u));
 926        if (readl(&dp6_ptr->u) != 0) {
 927            printk("GDT-PCI: Initialization error (DPMEM write error)\n");
 928            iounmap(ha->brd);
 929            return 0;
 930        }
 931        
 932        /* disable board interrupts, deinit services */
 933        writeb(0xff, &dp6_ptr->io.irqdel);
 934        writeb(0x00, &dp6_ptr->io.irqen);
 935        writeb(0x00, &dp6_ptr->u.ic.S_Status);
 936        writeb(0x00, &dp6_ptr->u.ic.Cmd_Index);
 937
 938        writel(pcistr->dpmem, &dp6_ptr->u.ic.S_Info[0]);
 939        writeb(0xff, &dp6_ptr->u.ic.S_Cmd_Indx);
 940        writeb(0, &dp6_ptr->io.event);
 941        retries = INIT_RETRIES;
 942        gdth_delay(20);
 943        while (readb(&dp6_ptr->u.ic.S_Status) != 0xff) {
 944            if (--retries == 0) {
 945                printk("GDT-PCI: Initialization error (DEINIT failed)\n");
 946                iounmap(ha->brd);
 947                return 0;
 948            }
 949            gdth_delay(1);
 950        }
 951        prot_ver = (u8)readl(&dp6_ptr->u.ic.S_Info[0]);
 952        writeb(0, &dp6_ptr->u.ic.S_Status);
 953        writeb(0xff, &dp6_ptr->io.irqdel);
 954        if (prot_ver != PROTOCOL_VERSION) {
 955            printk("GDT-PCI: Illegal protocol version\n");
 956            iounmap(ha->brd);
 957            return 0;
 958        }
 959
 960        ha->type = GDT_PCI;
 961        ha->ic_all_size = sizeof(dp6_ptr->u);
 962        
 963        /* special command to controller BIOS */
 964        writel(0x00, &dp6_ptr->u.ic.S_Info[0]);
 965        writel(0x00, &dp6_ptr->u.ic.S_Info[1]);
 966        writel(0x00, &dp6_ptr->u.ic.S_Info[2]);
 967        writel(0x00, &dp6_ptr->u.ic.S_Info[3]);
 968        writeb(0xfe, &dp6_ptr->u.ic.S_Cmd_Indx);
 969        writeb(0, &dp6_ptr->io.event);
 970        retries = INIT_RETRIES;
 971        gdth_delay(20);
 972        while (readb(&dp6_ptr->u.ic.S_Status) != 0xfe) {
 973            if (--retries == 0) {
 974                printk("GDT-PCI: Initialization error\n");
 975                iounmap(ha->brd);
 976                return 0;
 977            }
 978            gdth_delay(1);
 979        }
 980        writeb(0, &dp6_ptr->u.ic.S_Status);
 981        writeb(0xff, &dp6_ptr->io.irqdel);
 982
 983        ha->dma64_support = 0;
 984
 985    } else if (ha->pdev->device <= PCI_DEVICE_ID_VORTEX_GDT6555) { /* GDT6110, ... */
 986        ha->plx = (gdt6c_plx_regs *)pcistr->io;
 987        TRACE2(("init_pci_new() dpmem %lx irq %d\n",
 988            pcistr->dpmem,ha->irq));
 989        ha->brd = ioremap(pcistr->dpmem, sizeof(gdt6c_dpram_str));
 990        if (ha->brd == NULL) {
 991            printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
 992            iounmap(ha->brd);
 993            return 0;
 994        }
 995        /* check and reset interface area */
 996        dp6c_ptr = ha->brd;
 997        writel(DPMEM_MAGIC, &dp6c_ptr->u);
 998        if (readl(&dp6c_ptr->u) != DPMEM_MAGIC) {
 999            printk("GDT-PCI: Cannot access DPMEM at 0x%lx (shadowed?)\n", 
1000                   pcistr->dpmem);
1001            found = FALSE;
1002            for (i = 0xC8000; i < 0xE8000; i += 0x4000) {
1003                iounmap(ha->brd);
1004                ha->brd = ioremap(i, sizeof(u16)); 
1005                if (ha->brd == NULL) {
1006                    printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
1007                    return 0;
1008                }
1009                if (readw(ha->brd) != 0xffff) {
1010                    TRACE2(("init_pci_plx() address 0x%x busy\n", i));
1011                    continue;
1012                }
1013                iounmap(ha->brd);
1014                pci_write_config_dword(pdev, PCI_BASE_ADDRESS_2, i);
1015                ha->brd = ioremap(i, sizeof(gdt6c_dpram_str)); 
1016                if (ha->brd == NULL) {
1017                    printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
1018                    return 0;
1019                }
1020                dp6c_ptr = ha->brd;
1021                writel(DPMEM_MAGIC, &dp6c_ptr->u);
1022                if (readl(&dp6c_ptr->u) == DPMEM_MAGIC) {
1023                    printk("GDT-PCI: Use free address at 0x%x\n", i);
1024                    found = TRUE;
1025                    break;
1026                }
1027            }   
1028            if (!found) {
1029                printk("GDT-PCI: No free address found!\n");
1030                iounmap(ha->brd);
1031                return 0;
1032            }
1033        }
1034        memset_io(&dp6c_ptr->u, 0, sizeof(dp6c_ptr->u));
1035        if (readl(&dp6c_ptr->u) != 0) {
1036            printk("GDT-PCI: Initialization error (DPMEM write error)\n");
1037            iounmap(ha->brd);
1038            return 0;
1039        }
1040        
1041        /* disable board interrupts, deinit services */
1042        outb(0x00,PTR2USHORT(&ha->plx->control1));
1043        outb(0xff,PTR2USHORT(&ha->plx->edoor_reg));
1044        
1045        writeb(0x00, &dp6c_ptr->u.ic.S_Status);
1046        writeb(0x00, &dp6c_ptr->u.ic.Cmd_Index);
1047
1048        writel(pcistr->dpmem, &dp6c_ptr->u.ic.S_Info[0]);
1049        writeb(0xff, &dp6c_ptr->u.ic.S_Cmd_Indx);
1050
1051        outb(1,PTR2USHORT(&ha->plx->ldoor_reg));
1052
1053        retries = INIT_RETRIES;
1054        gdth_delay(20);
1055        while (readb(&dp6c_ptr->u.ic.S_Status) != 0xff) {
1056            if (--retries == 0) {
1057                printk("GDT-PCI: Initialization error (DEINIT failed)\n");
1058                iounmap(ha->brd);
1059                return 0;
1060            }
1061            gdth_delay(1);
1062        }
1063        prot_ver = (u8)readl(&dp6c_ptr->u.ic.S_Info[0]);
1064        writeb(0, &dp6c_ptr->u.ic.Status);
1065        if (prot_ver != PROTOCOL_VERSION) {
1066            printk("GDT-PCI: Illegal protocol version\n");
1067            iounmap(ha->brd);
1068            return 0;
1069        }
1070
1071        ha->type = GDT_PCINEW;
1072        ha->ic_all_size = sizeof(dp6c_ptr->u);
1073
1074        /* special command to controller BIOS */
1075        writel(0x00, &dp6c_ptr->u.ic.S_Info[0]);
1076        writel(0x00, &dp6c_ptr->u.ic.S_Info[1]);
1077        writel(0x00, &dp6c_ptr->u.ic.S_Info[2]);
1078        writel(0x00, &dp6c_ptr->u.ic.S_Info[3]);
1079        writeb(0xfe, &dp6c_ptr->u.ic.S_Cmd_Indx);
1080        
1081        outb(1,PTR2USHORT(&ha->plx->ldoor_reg));
1082
1083        retries = INIT_RETRIES;
1084        gdth_delay(20);
1085        while (readb(&dp6c_ptr->u.ic.S_Status) != 0xfe) {
1086            if (--retries == 0) {
1087                printk("GDT-PCI: Initialization error\n");
1088                iounmap(ha->brd);
1089                return 0;
1090            }
1091            gdth_delay(1);
1092        }
1093        writeb(0, &dp6c_ptr->u.ic.S_Status);
1094
1095        ha->dma64_support = 0;
1096
1097    } else {                                            /* MPR */
1098        TRACE2(("init_pci_mpr() dpmem %lx irq %d\n",pcistr->dpmem,ha->irq));
1099        ha->brd = ioremap(pcistr->dpmem, sizeof(gdt6m_dpram_str));
1100        if (ha->brd == NULL) {
1101            printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
1102            return 0;
1103        }
1104
1105        /* manipulate config. space to enable DPMEM, start RP controller */
1106        pci_read_config_word(pdev, PCI_COMMAND, &command);
1107        command |= 6;
1108        pci_write_config_word(pdev, PCI_COMMAND, command);
1109        if (pci_resource_start(pdev, 8) == 1UL)
1110            pci_resource_start(pdev, 8) = 0UL;
1111        i = 0xFEFF0001UL;
1112        pci_write_config_dword(pdev, PCI_ROM_ADDRESS, i);
1113        gdth_delay(1);
1114        pci_write_config_dword(pdev, PCI_ROM_ADDRESS,
1115                               pci_resource_start(pdev, 8));
1116        
1117        dp6m_ptr = ha->brd;
1118
1119        /* Ensure that it is safe to access the non HW portions of DPMEM.
1120         * Aditional check needed for Xscale based RAID controllers */
1121        while( ((int)readb(&dp6m_ptr->i960r.sema0_reg) ) & 3 )
1122            gdth_delay(1);
1123        
1124        /* check and reset interface area */
1125        writel(DPMEM_MAGIC, &dp6m_ptr->u);
1126        if (readl(&dp6m_ptr->u) != DPMEM_MAGIC) {
1127            printk("GDT-PCI: Cannot access DPMEM at 0x%lx (shadowed?)\n", 
1128                   pcistr->dpmem);
1129            found = FALSE;
1130            for (i = 0xC8000; i < 0xE8000; i += 0x4000) {
1131                iounmap(ha->brd);
1132                ha->brd = ioremap(i, sizeof(u16)); 
1133                if (ha->brd == NULL) {
1134                    printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
1135                    return 0;
1136                }
1137                if (readw(ha->brd) != 0xffff) {
1138                    TRACE2(("init_pci_mpr() address 0x%x busy\n", i));
1139                    continue;
1140                }
1141                iounmap(ha->brd);
1142                pci_write_config_dword(pdev, PCI_BASE_ADDRESS_0, i);
1143                ha->brd = ioremap(i, sizeof(gdt6m_dpram_str)); 
1144                if (ha->brd == NULL) {
1145                    printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
1146                    return 0;
1147                }
1148                dp6m_ptr = ha->brd;
1149                writel(DPMEM_MAGIC, &dp6m_ptr->u);
1150                if (readl(&dp6m_ptr->u) == DPMEM_MAGIC) {
1151                    printk("GDT-PCI: Use free address at 0x%x\n", i);
1152                    found = TRUE;
1153                    break;
1154                }
1155            }   
1156            if (!found) {
1157                printk("GDT-PCI: No free address found!\n");
1158                iounmap(ha->brd);
1159                return 0;
1160            }
1161        }
1162        memset_io(&dp6m_ptr->u, 0, sizeof(dp6m_ptr->u));
1163        
1164        /* disable board interrupts, deinit services */
1165        writeb(readb(&dp6m_ptr->i960r.edoor_en_reg) | 4,
1166                    &dp6m_ptr->i960r.edoor_en_reg);
1167        writeb(0xff, &dp6m_ptr->i960r.edoor_reg);
1168        writeb(0x00, &dp6m_ptr->u.ic.S_Status);
1169        writeb(0x00, &dp6m_ptr->u.ic.Cmd_Index);
1170
1171        writel(pcistr->dpmem, &dp6m_ptr->u.ic.S_Info[0]);
1172        writeb(0xff, &dp6m_ptr->u.ic.S_Cmd_Indx);
1173        writeb(1, &dp6m_ptr->i960r.ldoor_reg);
1174        retries = INIT_RETRIES;
1175        gdth_delay(20);
1176        while (readb(&dp6m_ptr->u.ic.S_Status) != 0xff) {
1177            if (--retries == 0) {
1178                printk("GDT-PCI: Initialization error (DEINIT failed)\n");
1179                iounmap(ha->brd);
1180                return 0;
1181            }
1182            gdth_delay(1);
1183        }
1184        prot_ver = (u8)readl(&dp6m_ptr->u.ic.S_Info[0]);
1185        writeb(0, &dp6m_ptr->u.ic.S_Status);
1186        if (prot_ver != PROTOCOL_VERSION) {
1187            printk("GDT-PCI: Illegal protocol version\n");
1188            iounmap(ha->brd);
1189            return 0;
1190        }
1191
1192        ha->type = GDT_PCIMPR;
1193        ha->ic_all_size = sizeof(dp6m_ptr->u);
1194        
1195        /* special command to controller BIOS */
1196        writel(0x00, &dp6m_ptr->u.ic.S_Info[0]);
1197        writel(0x00, &dp6m_ptr->u.ic.S_Info[1]);
1198        writel(0x00, &dp6m_ptr->u.ic.S_Info[2]);
1199        writel(0x00, &dp6m_ptr->u.ic.S_Info[3]);
1200        writeb(0xfe, &dp6m_ptr->u.ic.S_Cmd_Indx);
1201        writeb(1, &dp6m_ptr->i960r.ldoor_reg);
1202        retries = INIT_RETRIES;
1203        gdth_delay(20);
1204        while (readb(&dp6m_ptr->u.ic.S_Status) != 0xfe) {
1205            if (--retries == 0) {
1206                printk("GDT-PCI: Initialization error\n");
1207                iounmap(ha->brd);
1208                return 0;
1209            }
1210            gdth_delay(1);
1211        }
1212        writeb(0, &dp6m_ptr->u.ic.S_Status);
1213
1214        /* read FW version to detect 64-bit DMA support */
1215        writeb(0xfd, &dp6m_ptr->u.ic.S_Cmd_Indx);
1216        writeb(1, &dp6m_ptr->i960r.ldoor_reg);
1217        retries = INIT_RETRIES;
1218        gdth_delay(20);
1219        while (readb(&dp6m_ptr->u.ic.S_Status) != 0xfd) {
1220            if (--retries == 0) {
1221                printk("GDT-PCI: Initialization error (DEINIT failed)\n");
1222                iounmap(ha->brd);
1223                return 0;
1224            }
1225            gdth_delay(1);
1226        }
1227        prot_ver = (u8)(readl(&dp6m_ptr->u.ic.S_Info[0]) >> 16);
1228        writeb(0, &dp6m_ptr->u.ic.S_Status);
1229        if (prot_ver < 0x2b)      /* FW < x.43: no 64-bit DMA support */
1230            ha->dma64_support = 0;
1231        else 
1232            ha->dma64_support = 1;
1233    }
1234
1235    return 1;
1236}
1237#endif /* CONFIG_PCI */
1238
1239/* controller protocol functions */
1240
1241static void __devinit gdth_enable_int(gdth_ha_str *ha)
1242{
1243    unsigned long flags;
1244    gdt2_dpram_str __iomem *dp2_ptr;
1245    gdt6_dpram_str __iomem *dp6_ptr;
1246    gdt6m_dpram_str __iomem *dp6m_ptr;
1247
1248    TRACE(("gdth_enable_int() hanum %d\n",ha->hanum));
1249    spin_lock_irqsave(&ha->smp_lock, flags);
1250
1251    if (ha->type == GDT_EISA) {
1252        outb(0xff, ha->bmic + EDOORREG);
1253        outb(0xff, ha->bmic + EDENABREG);
1254        outb(0x01, ha->bmic + EINTENABREG);
1255    } else if (ha->type == GDT_ISA) {
1256        dp2_ptr = ha->brd;
1257        writeb(1, &dp2_ptr->io.irqdel);
1258        writeb(0, &dp2_ptr->u.ic.Cmd_Index);
1259        writeb(1, &dp2_ptr->io.irqen);
1260    } else if (ha->type == GDT_PCI) {
1261        dp6_ptr = ha->brd;
1262        writeb(1, &dp6_ptr->io.irqdel);
1263        writeb(0, &dp6_ptr->u.ic.Cmd_Index);
1264        writeb(1, &dp6_ptr->io.irqen);
1265    } else if (ha->type == GDT_PCINEW) {
1266        outb(0xff, PTR2USHORT(&ha->plx->edoor_reg));
1267        outb(0x03, PTR2USHORT(&ha->plx->control1));
1268    } else if (ha->type == GDT_PCIMPR) {
1269        dp6m_ptr = ha->brd;
1270        writeb(0xff, &dp6m_ptr->i960r.edoor_reg);
1271        writeb(readb(&dp6m_ptr->i960r.edoor_en_reg) & ~4,
1272                    &dp6m_ptr->i960r.edoor_en_reg);
1273    }
1274    spin_unlock_irqrestore(&ha->smp_lock, flags);
1275}
1276
1277/* return IStatus if interrupt was from this card else 0 */
1278static u8 gdth_get_status(gdth_ha_str *ha)
1279{
1280    u8 IStatus = 0;
1281
1282    TRACE(("gdth_get_status() irq %d ctr_count %d\n", ha->irq, gdth_ctr_count));
1283
1284        if (ha->type == GDT_EISA)
1285            IStatus = inb((u16)ha->bmic + EDOORREG);
1286        else if (ha->type == GDT_ISA)
1287            IStatus =
1288                readb(&((gdt2_dpram_str __iomem *)ha->brd)->u.ic.Cmd_Index);
1289        else if (ha->type == GDT_PCI)
1290            IStatus =
1291                readb(&((gdt6_dpram_str __iomem *)ha->brd)->u.ic.Cmd_Index);
1292        else if (ha->type == GDT_PCINEW) 
1293            IStatus = inb(PTR2USHORT(&ha->plx->edoor_reg));
1294        else if (ha->type == GDT_PCIMPR)
1295            IStatus =
1296                readb(&((gdt6m_dpram_str __iomem *)ha->brd)->i960r.edoor_reg);
1297
1298        return IStatus;
1299}
1300
1301static int gdth_test_busy(gdth_ha_str *ha)
1302{
1303    register int gdtsema0 = 0;
1304
1305    TRACE(("gdth_test_busy() hanum %d\n", ha->hanum));
1306
1307    if (ha->type == GDT_EISA)
1308        gdtsema0 = (int)inb(ha->bmic + SEMA0REG);
1309    else if (ha->type == GDT_ISA)
1310        gdtsema0 = (int)readb(&((gdt2_dpram_str __iomem *)ha->brd)->u.ic.Sema0);
1311    else if (ha->type == GDT_PCI)
1312        gdtsema0 = (int)readb(&((gdt6_dpram_str __iomem *)ha->brd)->u.ic.Sema0);
1313    else if (ha->type == GDT_PCINEW) 
1314        gdtsema0 = (int)inb(PTR2USHORT(&ha->plx->sema0_reg));
1315    else if (ha->type == GDT_PCIMPR)
1316        gdtsema0 = 
1317            (int)readb(&((gdt6m_dpram_str __iomem *)ha->brd)->i960r.sema0_reg);
1318
1319    return (gdtsema0 & 1);
1320}
1321
1322
1323static int gdth_get_cmd_index(gdth_ha_str *ha)
1324{
1325    int i;
1326
1327    TRACE(("gdth_get_cmd_index() hanum %d\n", ha->hanum));
1328
1329    for (i=0; i<GDTH_MAXCMDS; ++i) {
1330        if (ha->cmd_tab[i].cmnd == UNUSED_CMND) {
1331            ha->cmd_tab[i].cmnd = ha->pccb->RequestBuffer;
1332            ha->cmd_tab[i].service = ha->pccb->Service;
1333            ha->pccb->CommandIndex = (u32)i+2;
1334            return (i+2);
1335        }
1336    }
1337    return 0;
1338}
1339
1340
1341static void gdth_set_sema0(gdth_ha_str *ha)
1342{
1343    TRACE(("gdth_set_sema0() hanum %d\n", ha->hanum));
1344
1345    if (ha->type == GDT_EISA) {
1346        outb(1, ha->bmic + SEMA0REG);
1347    } else if (ha->type == GDT_ISA) {
1348        writeb(1, &((gdt2_dpram_str __iomem *)ha->brd)->u.ic.Sema0);
1349    } else if (ha->type == GDT_PCI) {
1350        writeb(1, &((gdt6_dpram_str __iomem *)ha->brd)->u.ic.Sema0);
1351    } else if (ha->type == GDT_PCINEW) { 
1352        outb(1, PTR2USHORT(&ha->plx->sema0_reg));
1353    } else if (ha->type == GDT_PCIMPR) {
1354        writeb(1, &((gdt6m_dpram_str __iomem *)ha->brd)->i960r.sema0_reg);
1355    }
1356}
1357
1358
1359static void gdth_copy_command(gdth_ha_str *ha)
1360{
1361    register gdth_cmd_str *cmd_ptr;
1362    register gdt6m_dpram_str __iomem *dp6m_ptr;
1363    register gdt6c_dpram_str __iomem *dp6c_ptr;
1364    gdt6_dpram_str __iomem *dp6_ptr;
1365    gdt2_dpram_str __iomem *dp2_ptr;
1366    u16 cp_count,dp_offset,cmd_no;
1367    
1368    TRACE(("gdth_copy_command() hanum %d\n", ha->hanum));
1369
1370    cp_count = ha->cmd_len;
1371    dp_offset= ha->cmd_offs_dpmem;
1372    cmd_no   = ha->cmd_cnt;
1373    cmd_ptr  = ha->pccb;
1374
1375    ++ha->cmd_cnt;                                                      
1376    if (ha->type == GDT_EISA)
1377        return;                                 /* no DPMEM, no copy */
1378
1379    /* set cpcount dword aligned */
1380    if (cp_count & 3)
1381        cp_count += (4 - (cp_count & 3));
1382
1383    ha->cmd_offs_dpmem += cp_count;
1384    
1385    /* set offset and service, copy command to DPMEM */
1386    if (ha->type == GDT_ISA) {
1387        dp2_ptr = ha->brd;
1388        writew(dp_offset + DPMEM_COMMAND_OFFSET,
1389                    &dp2_ptr->u.ic.comm_queue[cmd_no].offset);
1390        writew((u16)cmd_ptr->Service,
1391                    &dp2_ptr->u.ic.comm_queue[cmd_no].serv_id);
1392        memcpy_toio(&dp2_ptr->u.ic.gdt_dpr_cmd[dp_offset],cmd_ptr,cp_count);
1393    } else if (ha->type == GDT_PCI) {
1394        dp6_ptr = ha->brd;
1395        writew(dp_offset + DPMEM_COMMAND_OFFSET,
1396                    &dp6_ptr->u.ic.comm_queue[cmd_no].offset);
1397        writew((u16)cmd_ptr->Service,
1398                    &dp6_ptr->u.ic.comm_queue[cmd_no].serv_id);
1399        memcpy_toio(&dp6_ptr->u.ic.gdt_dpr_cmd[dp_offset],cmd_ptr,cp_count);
1400    } else if (ha->type == GDT_PCINEW) {
1401        dp6c_ptr = ha->brd;
1402        writew(dp_offset + DPMEM_COMMAND_OFFSET,
1403                    &dp6c_ptr->u.ic.comm_queue[cmd_no].offset);
1404        writew((u16)cmd_ptr->Service,
1405                    &dp6c_ptr->u.ic.comm_queue[cmd_no].serv_id);
1406        memcpy_toio(&dp6c_ptr->u.ic.gdt_dpr_cmd[dp_offset],cmd_ptr,cp_count);
1407    } else if (ha->type == GDT_PCIMPR) {
1408        dp6m_ptr = ha->brd;
1409        writew(dp_offset + DPMEM_COMMAND_OFFSET,
1410                    &dp6m_ptr->u.ic.comm_queue[cmd_no].offset);
1411        writew((u16)cmd_ptr->Service,
1412                    &dp6m_ptr->u.ic.comm_queue[cmd_no].serv_id);
1413        memcpy_toio(&dp6m_ptr->u.ic.gdt_dpr_cmd[dp_offset],cmd_ptr,cp_count);
1414    }
1415}
1416
1417
1418static void gdth_release_event(gdth_ha_str *ha)
1419{
1420    TRACE(("gdth_release_event() hanum %d\n", ha->hanum));
1421
1422#ifdef GDTH_STATISTICS
1423    {
1424        u32 i,j;
1425        for (i=0,j=0; j<GDTH_MAXCMDS; ++j) {
1426            if (ha->cmd_tab[j].cmnd != UNUSED_CMND)
1427                ++i;
1428        }
1429        if (max_index < i) {
1430            max_index = i;
1431            TRACE3(("GDT: max_index = %d\n",(u16)i));
1432        }
1433    }
1434#endif
1435
1436    if (ha->pccb->OpCode == GDT_INIT)
1437        ha->pccb->Service |= 0x80;
1438
1439    if (ha->type == GDT_EISA) {
1440        if (ha->pccb->OpCode == GDT_INIT)               /* store DMA buffer */
1441            outl(ha->ccb_phys, ha->bmic + MAILBOXREG);
1442        outb(ha->pccb->Service, ha->bmic + LDOORREG);
1443    } else if (ha->type == GDT_ISA) {
1444        writeb(0, &((gdt2_dpram_str __iomem *)ha->brd)->io.event);
1445    } else if (ha->type == GDT_PCI) {
1446        writeb(0, &((gdt6_dpram_str __iomem *)ha->brd)->io.event);
1447    } else if (ha->type == GDT_PCINEW) { 
1448        outb(1, PTR2USHORT(&ha->plx->ldoor_reg));
1449    } else if (ha->type == GDT_PCIMPR) {
1450        writeb(1, &((gdt6m_dpram_str __iomem *)ha->brd)->i960r.ldoor_reg);
1451    }
1452}
1453
1454static int gdth_wait(gdth_ha_str *ha, int index, u32 time)
1455{
1456    int answer_found = FALSE;
1457    int wait_index = 0;
1458
1459    TRACE(("gdth_wait() hanum %d index %d time %d\n", ha->hanum, index, time));
1460
1461    if (index == 0)
1462        return 1;                               /* no wait required */
1463
1464    do {
1465        __gdth_interrupt(ha, true, &wait_index);
1466        if (wait_index == index) {
1467            answer_found = TRUE;
1468            break;
1469        }
1470        gdth_delay(1);
1471    } while (--time);
1472
1473    while (gdth_test_busy(ha))
1474        gdth_delay(0);
1475
1476    return (answer_found);
1477}
1478
1479
1480static int gdth_internal_cmd(gdth_ha_str *ha, u8 service, u16 opcode,
1481                                            u32 p1, u64 p2, u64 p3)
1482{
1483    register gdth_cmd_str *cmd_ptr;
1484    int retries,index;
1485
1486    TRACE2(("gdth_internal_cmd() service %d opcode %d\n",service,opcode));
1487
1488    cmd_ptr = ha->pccb;
1489    memset((char*)cmd_ptr,0,sizeof(gdth_cmd_str));
1490
1491    /* make command  */
1492    for (retries = INIT_RETRIES;;) {
1493        cmd_ptr->Service          = service;
1494        cmd_ptr->RequestBuffer    = INTERNAL_CMND;
1495        if (!(index=gdth_get_cmd_index(ha))) {
1496            TRACE(("GDT: No free command index found\n"));
1497            return 0;
1498        }
1499        gdth_set_sema0(ha);
1500        cmd_ptr->OpCode           = opcode;
1501        cmd_ptr->BoardNode        = LOCALBOARD;
1502        if (service == CACHESERVICE) {
1503            if (opcode == GDT_IOCTL) {
1504                cmd_ptr->u.ioctl.subfunc = p1;
1505                cmd_ptr->u.ioctl.channel = (u32)p2;
1506                cmd_ptr->u.ioctl.param_size = (u16)p3;
1507                cmd_ptr->u.ioctl.p_param = ha->scratch_phys;
1508            } else {
1509                if (ha->cache_feat & GDT_64BIT) {
1510                    cmd_ptr->u.cache64.DeviceNo = (u16)p1;
1511                    cmd_ptr->u.cache64.BlockNo  = p2;
1512                } else {
1513                    cmd_ptr->u.cache.DeviceNo = (u16)p1;
1514                    cmd_ptr->u.cache.BlockNo  = (u32)p2;
1515                }
1516            }
1517        } else if (service == SCSIRAWSERVICE) {
1518            if (ha->raw_feat & GDT_64BIT) {
1519                cmd_ptr->u.raw64.direction  = p1;
1520                cmd_ptr->u.raw64.bus        = (u8)p2;
1521                cmd_ptr->u.raw64.target     = (u8)p3;
1522                cmd_ptr->u.raw64.lun        = (u8)(p3 >> 8);
1523            } else {
1524                cmd_ptr->u.raw.direction  = p1;
1525                cmd_ptr->u.raw.bus        = (u8)p2;
1526                cmd_ptr->u.raw.target     = (u8)p3;
1527                cmd_ptr->u.raw.lun        = (u8)(p3 >> 8);
1528            }
1529        } else if (service == SCREENSERVICE) {
1530            if (opcode == GDT_REALTIME) {
1531                *(u32 *)&cmd_ptr->u.screen.su.data[0] = p1;
1532                *(u32 *)&cmd_ptr->u.screen.su.data[4] = (u32)p2;
1533                *(u32 *)&cmd_ptr->u.screen.su.data[8] = (u32)p3;
1534            }
1535        }
1536        ha->cmd_len          = sizeof(gdth_cmd_str);
1537        ha->cmd_offs_dpmem   = 0;
1538        ha->cmd_cnt          = 0;
1539        gdth_copy_command(ha);
1540        gdth_release_event(ha);
1541        gdth_delay(20);
1542        if (!gdth_wait(ha, index, INIT_TIMEOUT)) {
1543            printk("GDT: Initialization error (timeout service %d)\n",service);
1544            return 0;
1545        }
1546        if (ha->status != S_BSY || --retries == 0)
1547            break;
1548        gdth_delay(1);   
1549    }   
1550    
1551    return (ha->status != S_OK ? 0:1);
1552}
1553    
1554
1555/* search for devices */
1556
1557static int __devinit gdth_search_drives(gdth_ha_str *ha)
1558{
1559    u16 cdev_cnt, i;
1560    int ok;
1561    u32 bus_no, drv_cnt, drv_no, j;
1562    gdth_getch_str *chn;
1563    gdth_drlist_str *drl;
1564    gdth_iochan_str *ioc;
1565    gdth_raw_iochan_str *iocr;
1566    gdth_arcdl_str *alst;
1567    gdth_alist_str *alst2;
1568    gdth_oem_str_ioctl *oemstr;
1569#ifdef INT_COAL
1570    gdth_perf_modes *pmod;
1571#endif
1572
1573#ifdef GDTH_RTC
1574    u8 rtc[12];
1575    unsigned long flags;
1576#endif     
1577   
1578    TRACE(("gdth_search_drives() hanum %d\n", ha->hanum));
1579    ok = 0;
1580
1581    /* initialize controller services, at first: screen service */
1582    ha->screen_feat = 0;
1583    if (!force_dma32) {
1584        ok = gdth_internal_cmd(ha, SCREENSERVICE, GDT_X_INIT_SCR, 0, 0, 0);
1585        if (ok)
1586            ha->screen_feat = GDT_64BIT;
1587    }
1588    if (force_dma32 || (!ok && ha->status == (u16)S_NOFUNC))
1589        ok = gdth_internal_cmd(ha, SCREENSERVICE, GDT_INIT, 0, 0, 0);
1590    if (!ok) {
1591        printk("GDT-HA %d: Initialization error screen service (code %d)\n",
1592               ha->hanum, ha->status);
1593        return 0;
1594    }
1595    TRACE2(("gdth_search_drives(): SCREENSERVICE initialized\n"));
1596
1597#ifdef GDTH_RTC
1598    /* read realtime clock info, send to controller */
1599    /* 1. wait for the falling edge of update flag */
1600    spin_lock_irqsave(&rtc_lock, flags);
1601    for (j = 0; j < 1000000; ++j)
1602        if (CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP)
1603            break;
1604    for (j = 0; j < 1000000; ++j)
1605        if (!(CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP))
1606            break;
1607    /* 2. read info */
1608    do {
1609        for (j = 0; j < 12; ++j) 
1610            rtc[j] = CMOS_READ(j);
1611    } while (rtc[0] != CMOS_READ(0));
1612    spin_unlock_irqrestore(&rtc_lock, flags);
1613    TRACE2(("gdth_search_drives(): RTC: %x/%x/%x\n",*(u32 *)&rtc[0],
1614            *(u32 *)&rtc[4], *(u32 *)&rtc[8]));
1615    /* 3. send to controller firmware */
1616    gdth_internal_cmd(ha, SCREENSERVICE, GDT_REALTIME, *(u32 *)&rtc[0],
1617                      *(u32 *)&rtc[4], *(u32 *)&rtc[8]);
1618#endif  
1619 
1620    /* unfreeze all IOs */
1621    gdth_internal_cmd(ha, CACHESERVICE, GDT_UNFREEZE_IO, 0, 0, 0);
1622 
1623    /* initialize cache service */
1624    ha->cache_feat = 0;
1625    if (!force_dma32) {
1626        ok = gdth_internal_cmd(ha, CACHESERVICE, GDT_X_INIT_HOST, LINUX_OS,
1627                                                                         0, 0);
1628        if (ok)
1629            ha->cache_feat = GDT_64BIT;
1630    }
1631    if (force_dma32 || (!ok && ha->status == (u16)S_NOFUNC))
1632        ok = gdth_internal_cmd(ha, CACHESERVICE, GDT_INIT, LINUX_OS, 0, 0);
1633    if (!ok) {
1634        printk("GDT-HA %d: Initialization error cache service (code %d)\n",
1635               ha->hanum, ha->status);
1636        return 0;
1637    }
1638    TRACE2(("gdth_search_drives(): CACHESERVICE initialized\n"));
1639    cdev_cnt = (u16)ha->info;
1640    ha->fw_vers = ha->service;
1641
1642#ifdef INT_COAL
1643    if (ha->type == GDT_PCIMPR) {
1644        /* set perf. modes */
1645        pmod = (gdth_perf_modes *)ha->pscratch;
1646        pmod->version          = 1;
1647        pmod->st_mode          = 1;    /* enable one status buffer */
1648        *((u64 *)&pmod->st_buff_addr1) = ha->coal_stat_phys;
1649        pmod->st_buff_indx1    = COALINDEX;
1650        pmod->st_buff_addr2    = 0;
1651        pmod->st_buff_u_addr2  = 0;
1652        pmod->st_buff_indx2    = 0;
1653        pmod->st_buff_size     = sizeof(gdth_coal_status) * MAXOFFSETS;
1654        pmod->cmd_mode         = 0;    // disable all cmd buffers
1655        pmod->cmd_buff_addr1   = 0;
1656        pmod->cmd_buff_u_addr1 = 0;
1657        pmod->cmd_buff_indx1   = 0;
1658        pmod->cmd_buff_addr2   = 0;
1659        pmod->cmd_buff_u_addr2 = 0;
1660        pmod->cmd_buff_indx2   = 0;
1661        pmod->cmd_buff_size    = 0;
1662        pmod->reserved1        = 0;            
1663        pmod->reserved2        = 0;            
1664        if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, SET_PERF_MODES,
1665                              INVALID_CHANNEL,sizeof(gdth_perf_modes))) {
1666            printk("GDT-HA %d: Interrupt coalescing activated\n", ha->hanum);
1667        }
1668    }
1669#endif
1670
1671    /* detect number of buses - try new IOCTL */
1672    iocr = (gdth_raw_iochan_str *)ha->pscratch;
1673    iocr->hdr.version        = 0xffffffff;
1674    iocr->hdr.list_entries   = MAXBUS;
1675    iocr->hdr.first_chan     = 0;
1676    iocr->hdr.last_chan      = MAXBUS-1;
1677    iocr->hdr.list_offset    = GDTOFFSOF(gdth_raw_iochan_str, list[0]);
1678    if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, IOCHAN_RAW_DESC,
1679                          INVALID_CHANNEL,sizeof(gdth_raw_iochan_str))) {
1680        TRACE2(("IOCHAN_RAW_DESC supported!\n"));
1681        ha->bus_cnt = iocr->hdr.chan_count;
1682        for (bus_no = 0; bus_no < ha->bus_cnt; ++bus_no) {
1683            if (iocr->list[bus_no].proc_id < MAXID)
1684                ha->bus_id[bus_no] = iocr->list[bus_no].proc_id;
1685            else
1686                ha->bus_id[bus_no] = 0xff;
1687        }
1688    } else {
1689        /* old method */
1690        chn = (gdth_getch_str *)ha->pscratch;
1691        for (bus_no = 0; bus_no < MAXBUS; ++bus_no) {
1692            chn->channel_no = bus_no;
1693            if (!gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1694                                   SCSI_CHAN_CNT | L_CTRL_PATTERN,
1695                                   IO_CHANNEL | INVALID_CHANNEL,
1696                                   sizeof(gdth_getch_str))) {
1697                if (bus_no == 0) {
1698                    printk("GDT-HA %d: Error detecting channel count (0x%x)\n",
1699                           ha->hanum, ha->status);
1700                    return 0;
1701                }
1702                break;
1703            }
1704            if (chn->siop_id < MAXID)
1705                ha->bus_id[bus_no] = chn->siop_id;
1706            else
1707                ha->bus_id[bus_no] = 0xff;
1708        }       
1709        ha->bus_cnt = (u8)bus_no;
1710    }
1711    TRACE2(("gdth_search_drives() %d channels\n",ha->bus_cnt));
1712
1713    /* read cache configuration */
1714    if (!gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, CACHE_INFO,
1715                           INVALID_CHANNEL,sizeof(gdth_cinfo_str))) {
1716        printk("GDT-HA %d: Initialization error cache service (code %d)\n",
1717               ha->hanum, ha->status);
1718        return 0;
1719    }
1720    ha->cpar = ((gdth_cinfo_str *)ha->pscratch)->cpar;
1721    TRACE2(("gdth_search_drives() cinfo: vs %x sta %d str %d dw %d b %d\n",
1722            ha->cpar.version,ha->cpar.state,ha->cpar.strategy,
1723            ha->cpar.write_back,ha->cpar.block_size));
1724
1725    /* read board info and features */
1726    ha->more_proc = FALSE;
1727    if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, BOARD_INFO,
1728                          INVALID_CHANNEL,sizeof(gdth_binfo_str))) {
1729        memcpy(&ha->binfo, (gdth_binfo_str *)ha->pscratch,
1730               sizeof(gdth_binfo_str));
1731        if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, BOARD_FEATURES,
1732                              INVALID_CHANNEL,sizeof(gdth_bfeat_str))) {
1733            TRACE2(("BOARD_INFO/BOARD_FEATURES supported\n"));
1734            ha->bfeat = *(gdth_bfeat_str *)ha->pscratch;
1735            ha->more_proc = TRUE;
1736        }
1737    } else {
1738        TRACE2(("BOARD_INFO requires firmware >= 1.10/2.08\n"));
1739        strcpy(ha->binfo.type_string, gdth_ctr_name(ha));
1740    }
1741    TRACE2(("Controller name: %s\n",ha->binfo.type_string));
1742
1743    /* read more informations */
1744    if (ha->more_proc) {
1745        /* physical drives, channel addresses */
1746        ioc = (gdth_iochan_str *)ha->pscratch;
1747        ioc->hdr.version        = 0xffffffff;
1748        ioc->hdr.list_entries   = MAXBUS;
1749        ioc->hdr.first_chan     = 0;
1750        ioc->hdr.last_chan      = MAXBUS-1;
1751        ioc->hdr.list_offset    = GDTOFFSOF(gdth_iochan_str, list[0]);
1752        if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, IOCHAN_DESC,
1753                              INVALID_CHANNEL,sizeof(gdth_iochan_str))) {
1754            for (bus_no = 0; bus_no < ha->bus_cnt; ++bus_no) {
1755                ha->raw[bus_no].address = ioc->list[bus_no].address;
1756                ha->raw[bus_no].local_no = ioc->list[bus_no].local_no;
1757            }
1758        } else {
1759            for (bus_no = 0; bus_no < ha->bus_cnt; ++bus_no) {
1760                ha->raw[bus_no].address = IO_CHANNEL;
1761                ha->raw[bus_no].local_no = bus_no;
1762            }
1763        }
1764        for (bus_no = 0; bus_no < ha->bus_cnt; ++bus_no) {
1765            chn = (gdth_getch_str *)ha->pscratch;
1766            chn->channel_no = ha->raw[bus_no].local_no;
1767            if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1768                                  SCSI_CHAN_CNT | L_CTRL_PATTERN,
1769                                  ha->raw[bus_no].address | INVALID_CHANNEL,
1770                                  sizeof(gdth_getch_str))) {
1771                ha->raw[bus_no].pdev_cnt = chn->drive_cnt;
1772                TRACE2(("Channel %d: %d phys. drives\n",
1773                        bus_no,chn->drive_cnt));
1774            }
1775            if (ha->raw[bus_no].pdev_cnt > 0) {
1776                drl = (gdth_drlist_str *)ha->pscratch;
1777                drl->sc_no = ha->raw[bus_no].local_no;
1778                drl->sc_cnt = ha->raw[bus_no].pdev_cnt;
1779                if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1780                                      SCSI_DR_LIST | L_CTRL_PATTERN,
1781                                      ha->raw[bus_no].address | INVALID_CHANNEL,
1782                                      sizeof(gdth_drlist_str))) {
1783                    for (j = 0; j < ha->raw[bus_no].pdev_cnt; ++j) 
1784                        ha->raw[bus_no].id_list[j] = drl->sc_list[j];
1785                } else {
1786                    ha->raw[bus_no].pdev_cnt = 0;
1787                }
1788            }
1789        }
1790
1791        /* logical drives */
1792        if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, CACHE_DRV_CNT,
1793                              INVALID_CHANNEL,sizeof(u32))) {
1794            drv_cnt = *(u32 *)ha->pscratch;
1795            if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, CACHE_DRV_LIST,
1796                                  INVALID_CHANNEL,drv_cnt * sizeof(u32))) {
1797                for (j = 0; j < drv_cnt; ++j) {
1798                    drv_no = ((u32 *)ha->pscratch)[j];
1799                    if (drv_no < MAX_LDRIVES) {
1800                        ha->hdr[drv_no].is_logdrv = TRUE;
1801                        TRACE2(("Drive %d is log. drive\n",drv_no));
1802                    }
1803                }
1804            }
1805            alst = (gdth_arcdl_str *)ha->pscratch;
1806            alst->entries_avail = MAX_LDRIVES;
1807            alst->first_entry = 0;
1808            alst->list_offset = GDTOFFSOF(gdth_arcdl_str, list[0]);
1809            if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1810                                  ARRAY_DRV_LIST2 | LA_CTRL_PATTERN, 
1811                                  INVALID_CHANNEL, sizeof(gdth_arcdl_str) +
1812                                  (alst->entries_avail-1) * sizeof(gdth_alist_str))) { 
1813                for (j = 0; j < alst->entries_init; ++j) {
1814                    ha->hdr[j].is_arraydrv = alst->list[j].is_arrayd;
1815                    ha->hdr[j].is_master = alst->list[j].is_master;
1816                    ha->hdr[j].is_parity = alst->list[j].is_parity;
1817                    ha->hdr[j].is_hotfix = alst->list[j].is_hotfix;
1818                    ha->hdr[j].master_no = alst->list[j].cd_handle;
1819                }
1820            } else if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1821                                         ARRAY_DRV_LIST | LA_CTRL_PATTERN,
1822                                         0, 35 * sizeof(gdth_alist_str))) {
1823                for (j = 0; j < 35; ++j) {
1824                    alst2 = &((gdth_alist_str *)ha->pscratch)[j];
1825                    ha->hdr[j].is_arraydrv = alst2->is_arrayd;
1826                    ha->hdr[j].is_master = alst2->is_master;
1827                    ha->hdr[j].is_parity = alst2->is_parity;
1828                    ha->hdr[j].is_hotfix = alst2->is_hotfix;
1829                    ha->hdr[j].master_no = alst2->cd_handle;
1830                }
1831            }
1832        }
1833    }       
1834                                  
1835    /* initialize raw service */
1836    ha->raw_feat = 0;
1837    if (!force_dma32) {
1838        ok = gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_X_INIT_RAW, 0, 0, 0);
1839        if (ok)
1840            ha->raw_feat = GDT_64BIT;
1841    }
1842    if (force_dma32 || (!ok && ha->status == (u16)S_NOFUNC))
1843        ok = gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_INIT, 0, 0, 0);
1844    if (!ok) {
1845        printk("GDT-HA %d: Initialization error raw service (code %d)\n",
1846               ha->hanum, ha->status);
1847        return 0;
1848    }
1849    TRACE2(("gdth_search_drives(): RAWSERVICE initialized\n"));
1850
1851    /* set/get features raw service (scatter/gather) */
1852    if (gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_SET_FEAT, SCATTER_GATHER,
1853                          0, 0)) {
1854        TRACE2(("gdth_search_drives(): set features RAWSERVICE OK\n"));
1855        if (gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_GET_FEAT, 0, 0, 0)) {
1856            TRACE2(("gdth_search_dr(): get feat RAWSERVICE %d\n",
1857                    ha->info));
1858            ha->raw_feat |= (u16)ha->info;
1859        }
1860    } 
1861
1862    /* set/get features cache service (equal to raw service) */
1863    if (gdth_internal_cmd(ha, CACHESERVICE, GDT_SET_FEAT, 0,
1864                          SCATTER_GATHER,0)) {
1865        TRACE2(("gdth_search_drives(): set features CACHESERVICE OK\n"));
1866        if (gdth_internal_cmd(ha, CACHESERVICE, GDT_GET_FEAT, 0, 0, 0)) {
1867            TRACE2(("gdth_search_dr(): get feat CACHESERV. %d\n",
1868                    ha->info));
1869            ha->cache_feat |= (u16)ha->info;
1870        }
1871    }
1872
1873    /* reserve drives for raw service */
1874    if (reserve_mode != 0) {
1875        gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_RESERVE_ALL,
1876                          reserve_mode == 1 ? 1 : 3, 0, 0);
1877        TRACE2(("gdth_search_drives(): RESERVE_ALL code %d\n", 
1878                ha->status));
1879    }
1880    for (i = 0; i < MAX_RES_ARGS; i += 4) {
1881        if (reserve_list[i] == ha->hanum && reserve_list[i+1] < ha->bus_cnt &&
1882            reserve_list[i+2] < ha->tid_cnt && reserve_list[i+3] < MAXLUN) {
1883            TRACE2(("gdth_search_drives(): reserve ha %d bus %d id %d lun %d\n",
1884                    reserve_list[i], reserve_list[i+1],
1885                    reserve_list[i+2], reserve_list[i+3]));
1886            if (!gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_RESERVE, 0,
1887                                   reserve_list[i+1], reserve_list[i+2] | 
1888                                   (reserve_list[i+3] << 8))) {
1889                printk("GDT-HA %d: Error raw service (RESERVE, code %d)\n",
1890                       ha->hanum, ha->status);
1891             }
1892        }
1893    }
1894
1895    /* Determine OEM string using IOCTL */
1896    oemstr = (gdth_oem_str_ioctl *)ha->pscratch;
1897    oemstr->params.ctl_version = 0x01;
1898    oemstr->params.buffer_size = sizeof(oemstr->text);
1899    if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
1900                          CACHE_READ_OEM_STRING_RECORD,INVALID_CHANNEL,
1901                          sizeof(gdth_oem_str_ioctl))) {
1902        TRACE2(("gdth_search_drives(): CACHE_READ_OEM_STRING_RECORD OK\n"));
1903        printk("GDT-HA %d: Vendor: %s Name: %s\n",
1904               ha->hanum, oemstr->text.oem_company_name, ha->binfo.type_string);
1905        /* Save the Host Drive inquiry data */
1906        strlcpy(ha->oem_name,oemstr->text.scsi_host_drive_inquiry_vendor_id,
1907                sizeof(ha->oem_name));
1908    } else {
1909        /* Old method, based on PCI ID */
1910        TRACE2(("gdth_search_drives(): CACHE_READ_OEM_STRING_RECORD failed\n"));
1911        printk("GDT-HA %d: Name: %s\n",
1912               ha->hanum, ha->binfo.type_string);
1913        if (ha->oem_id == OEM_ID_INTEL)
1914            strlcpy(ha->oem_name,"Intel  ", sizeof(ha->oem_name));
1915        else
1916            strlcpy(ha->oem_name,"ICP    ", sizeof(ha->oem_name));
1917    }
1918
1919    /* scanning for host drives */
1920    for (i = 0; i < cdev_cnt; ++i) 
1921        gdth_analyse_hdrive(ha, i);
1922    
1923    TRACE(("gdth_search_drives() OK\n"));
1924    return 1;
1925}
1926
1927static int gdth_analyse_hdrive(gdth_ha_str *ha, u16 hdrive)
1928{
1929    u32 drv_cyls;
1930    int drv_hds, drv_secs;
1931
1932    TRACE(("gdth_analyse_hdrive() hanum %d drive %d\n", ha->hanum, hdrive));
1933    if (hdrive >= MAX_HDRIVES)
1934        return 0;
1935
1936    if (!gdth_internal_cmd(ha, CACHESERVICE, GDT_INFO, hdrive, 0, 0))
1937        return 0;
1938    ha->hdr[hdrive].present = TRUE;
1939    ha->hdr[hdrive].size = ha->info;
1940   
1941    /* evaluate mapping (sectors per head, heads per cylinder) */
1942    ha->hdr[hdrive].size &= ~SECS32;
1943    if (ha->info2 == 0) {
1944        gdth_eval_mapping(ha->hdr[hdrive].size,&drv_cyls,&drv_hds,&drv_secs);
1945    } else {
1946        drv_hds = ha->info2 & 0xff;
1947        drv_secs = (ha->info2 >> 8) & 0xff;
1948        drv_cyls = (u32)ha->hdr[hdrive].size / drv_hds / drv_secs;
1949    }
1950    ha->hdr[hdrive].heads = (u8)drv_hds;
1951    ha->hdr[hdrive].secs  = (u8)drv_secs;
1952    /* round size */
1953    ha->hdr[hdrive].size  = drv_cyls * drv_hds * drv_secs;
1954    
1955    if (ha->cache_feat & GDT_64BIT) {
1956        if (gdth_internal_cmd(ha, CACHESERVICE, GDT_X_INFO, hdrive, 0, 0)
1957            && ha->info2 != 0) {
1958            ha->hdr[hdrive].size = ((u64)ha->info2 << 32) | ha->info;
1959        }
1960    }
1961    TRACE2(("gdth_search_dr() cdr. %d size %d hds %d scs %d\n",
1962            hdrive,ha->hdr[hdrive].size,drv_hds,drv_secs));
1963
1964    /* get informations about device */
1965    if (gdth_internal_cmd(ha, CACHESERVICE, GDT_DEVTYPE, hdrive, 0, 0)) {
1966        TRACE2(("gdth_search_dr() cache drive %d devtype %d\n",
1967                hdrive,ha->info));
1968        ha->hdr[hdrive].devtype = (u16)ha->info;
1969    }
1970
1971    /* cluster info */
1972    if (gdth_internal_cmd(ha, CACHESERVICE, GDT_CLUST_INFO, hdrive, 0, 0)) {
1973        TRACE2(("gdth_search_dr() cache drive %d cluster info %d\n",
1974                hdrive,ha->info));
1975        if (!shared_access)
1976            ha->hdr[hdrive].cluster_type = (u8)ha->info;
1977    }
1978
1979    /* R/W attributes */
1980    if (gdth_internal_cmd(ha, CACHESERVICE, GDT_RW_ATTRIBS, hdrive, 0, 0)) {
1981        TRACE2(("gdth_search_dr() cache drive %d r/w attrib. %d\n",
1982                hdrive,ha->info));
1983        ha->hdr[hdrive].rw_attribs = (u8)ha->info;
1984    }
1985
1986    return 1;
1987}
1988
1989
1990/* command queueing/sending functions */
1991
1992static void gdth_putq(gdth_ha_str *ha, Scsi_Cmnd *scp, u8 priority)
1993{
1994    struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
1995    register Scsi_Cmnd *pscp;
1996    register Scsi_Cmnd *nscp;
1997    unsigned long flags;
1998
1999    TRACE(("gdth_putq() priority %d\n",priority));
2000    spin_lock_irqsave(&ha->smp_lock, flags);
2001
2002    if (!cmndinfo->internal_command)
2003        cmndinfo->priority = priority;
2004
2005    if (ha->req_first==NULL) {
2006        ha->req_first = scp;                    /* queue was empty */
2007        scp->SCp.ptr = NULL;
2008    } else {                                    /* queue not empty */
2009        pscp = ha->req_first;
2010        nscp = (Scsi_Cmnd *)pscp->SCp.ptr;
2011        /* priority: 0-highest,..,0xff-lowest */
2012        while (nscp && gdth_cmnd_priv(nscp)->priority <= priority) {
2013            pscp = nscp;
2014            nscp = (Scsi_Cmnd *)pscp->SCp.ptr;
2015        }
2016        pscp->SCp.ptr = (char *)scp;
2017        scp->SCp.ptr  = (char *)nscp;
2018    }
2019    spin_unlock_irqrestore(&ha->smp_lock, flags);
2020
2021#ifdef GDTH_STATISTICS
2022    flags = 0;
2023    for (nscp=ha->req_first; nscp; nscp=(Scsi_Cmnd*)nscp->SCp.ptr)
2024        ++flags;
2025    if (max_rq < flags) {
2026        max_rq = flags;
2027        TRACE3(("GDT: max_rq = %d\n",(u16)max_rq));
2028    }
2029#endif
2030}
2031
2032static void gdth_next(gdth_ha_str *ha)
2033{
2034    register Scsi_Cmnd *pscp;
2035    register Scsi_Cmnd *nscp;
2036    u8 b, t, l, firsttime;
2037    u8 this_cmd, next_cmd;
2038    unsigned long flags = 0;
2039    int cmd_index;
2040
2041    TRACE(("gdth_next() hanum %d\n", ha->hanum));
2042    if (!gdth_polling) 
2043        spin_lock_irqsave(&ha->smp_lock, flags);
2044
2045    ha->cmd_cnt = ha->cmd_offs_dpmem = 0;
2046    this_cmd = firsttime = TRUE;
2047    next_cmd = gdth_polling ? FALSE:TRUE;
2048    cmd_index = 0;
2049
2050    for (nscp = pscp = ha->req_first; nscp; nscp = (Scsi_Cmnd *)nscp->SCp.ptr) {
2051        struct gdth_cmndinfo *nscp_cmndinfo = gdth_cmnd_priv(nscp);
2052        if (nscp != pscp && nscp != (Scsi_Cmnd *)pscp->SCp.ptr)
2053            pscp = (Scsi_Cmnd *)pscp->SCp.ptr;
2054        if (!nscp_cmndinfo->internal_command) {
2055            b = nscp->device->channel;
2056            t = nscp->device->id;
2057            l = nscp->device->lun;
2058            if (nscp_cmndinfo->priority >= DEFAULT_PRI) {
2059                if ((b != ha->virt_bus && ha->raw[BUS_L2P(ha,b)].lock) ||
2060                    (b == ha->virt_bus && t < MAX_HDRIVES && ha->hdr[t].lock))
2061                    continue;
2062            }
2063        } else
2064            b = t = l = 0;
2065
2066        if (firsttime) {
2067            if (gdth_test_busy(ha)) {        /* controller busy ? */
2068                TRACE(("gdth_next() controller %d busy !\n", ha->hanum));
2069                if (!gdth_polling) {
2070                    spin_unlock_irqrestore(&ha->smp_lock, flags);
2071                    return;
2072                }
2073                while (gdth_test_busy(ha))
2074                    gdth_delay(1);
2075            }   
2076            firsttime = FALSE;
2077        }
2078
2079        if (!nscp_cmndinfo->internal_command) {
2080        if (nscp_cmndinfo->phase == -1) {
2081            nscp_cmndinfo->phase = CACHESERVICE;           /* default: cache svc. */
2082            if (nscp->cmnd[0] == TEST_UNIT_READY) {
2083                TRACE2(("TEST_UNIT_READY Bus %d Id %d LUN %d\n", 
2084                        b, t, l));
2085                /* TEST_UNIT_READY -> set scan mode */
2086                if ((ha->scan_mode & 0x0f) == 0) {
2087                    if (b == 0 && t == 0 && l == 0) {
2088                        ha->scan_mode |= 1;
2089                        TRACE2(("Scan mode: 0x%x\n", ha->scan_mode));
2090                    }
2091                } else if ((ha->scan_mode & 0x0f) == 1) {
2092                    if (b == 0 && ((t == 0 && l == 1) ||
2093                         (t == 1 && l == 0))) {
2094                        nscp_cmndinfo->OpCode = GDT_SCAN_START;
2095                        nscp_cmndinfo->phase = ((ha->scan_mode & 0x10 ? 1:0) << 8)
2096                            | SCSIRAWSERVICE;
2097                        ha->scan_mode = 0x12;
2098                        TRACE2(("Scan mode: 0x%x (SCAN_START)\n", 
2099                                ha->scan_mode));
2100                    } else {
2101                        ha->scan_mode &= 0x10;
2102                        TRACE2(("Scan mode: 0x%x\n", ha->scan_mode));
2103                    }                   
2104                } else if (ha->scan_mode == 0x12) {
2105                    if (b == ha->bus_cnt && t == ha->tid_cnt-1) {
2106                        nscp_cmndinfo->phase = SCSIRAWSERVICE;
2107                        nscp_cmndinfo->OpCode = GDT_SCAN_END;
2108                        ha->scan_mode &= 0x10;
2109                        TRACE2(("Scan mode: 0x%x (SCAN_END)\n", 
2110                                ha->scan_mode));
2111                    }
2112                }
2113            }
2114            if (b == ha->virt_bus && nscp->cmnd[0] != INQUIRY &&
2115                nscp->cmnd[0] != READ_CAPACITY && nscp->cmnd[0] != MODE_SENSE &&
2116                (ha->hdr[t].cluster_type & CLUSTER_DRIVE)) {
2117                /* always GDT_CLUST_INFO! */
2118                nscp_cmndinfo->OpCode = GDT_CLUST_INFO;
2119            }
2120        }
2121        }
2122
2123        if (nscp_cmndinfo->OpCode != -1) {
2124            if ((nscp_cmndinfo->phase & 0xff) == CACHESERVICE) {
2125                if (!(cmd_index=gdth_fill_cache_cmd(ha, nscp, t)))
2126                    this_cmd = FALSE;
2127                next_cmd = FALSE;
2128            } else if ((nscp_cmndinfo->phase & 0xff) == SCSIRAWSERVICE) {
2129                if (!(cmd_index=gdth_fill_raw_cmd(ha, nscp, BUS_L2P(ha, b))))
2130                    this_cmd = FALSE;
2131                next_cmd = FALSE;
2132            } else {
2133                memset((char*)nscp->sense_buffer,0,16);
2134                nscp->sense_buffer[0] = 0x70;
2135                nscp->sense_buffer[2] = NOT_READY;
2136                nscp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
2137                if (!nscp_cmndinfo->wait_for_completion)
2138                    nscp_cmndinfo->wait_for_completion++;
2139                else
2140                    gdth_scsi_done(nscp);
2141            }
2142        } else if (gdth_cmnd_priv(nscp)->internal_command) {
2143            if (!(cmd_index=gdth_special_cmd(ha, nscp)))
2144                this_cmd = FALSE;
2145            next_cmd = FALSE;
2146        } else if (b != ha->virt_bus) {
2147            if (ha->raw[BUS_L2P(ha,b)].io_cnt[t] >= GDTH_MAX_RAW ||
2148                !(cmd_index=gdth_fill_raw_cmd(ha, nscp, BUS_L2P(ha, b))))
2149                this_cmd = FALSE;
2150            else 
2151                ha->raw[BUS_L2P(ha,b)].io_cnt[t]++;
2152        } else if (t >= MAX_HDRIVES || !ha->hdr[t].present || l != 0) {
2153            TRACE2(("Command 0x%x to bus %d id %d lun %d -> IGNORE\n",
2154                    nscp->cmnd[0], b, t, l));
2155            nscp->result = DID_BAD_TARGET << 16;
2156            if (!nscp_cmndinfo->wait_for_completion)
2157                nscp_cmndinfo->wait_for_completion++;
2158            else
2159                gdth_scsi_done(nscp);
2160        } else {
2161            switch (nscp->cmnd[0]) {
2162              case TEST_UNIT_READY:
2163              case INQUIRY:
2164              case REQUEST_SENSE:
2165              case READ_CAPACITY:
2166              case VERIFY:
2167              case START_STOP:
2168              case MODE_SENSE:
2169              case SERVICE_ACTION_IN:
2170                TRACE(("cache cmd %x/%x/%x/%x/%x/%x\n",nscp->cmnd[0],
2171                       nscp->cmnd[1],nscp->cmnd[2],nscp->cmnd[3],
2172                       nscp->cmnd[4],nscp->cmnd[5]));
2173                if (ha->hdr[t].media_changed && nscp->cmnd[0] != INQUIRY) {
2174                    /* return UNIT_ATTENTION */
2175                    TRACE2(("cmd 0x%x target %d: UNIT_ATTENTION\n",
2176                             nscp->cmnd[0], t));
2177                    ha->hdr[t].media_changed = FALSE;
2178                    memset((char*)nscp->sense_buffer,0,16);
2179                    nscp->sense_buffer[0] = 0x70;
2180                    nscp->sense_buffer[2] = UNIT_ATTENTION;
2181                    nscp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
2182                    if (!nscp_cmndinfo->wait_for_completion)
2183                        nscp_cmndinfo->wait_for_completion++;
2184                    else
2185                        gdth_scsi_done(nscp);
2186                } else if (gdth_internal_cache_cmd(ha, nscp))
2187                    gdth_scsi_done(nscp);
2188                break;
2189
2190              case ALLOW_MEDIUM_REMOVAL:
2191                TRACE(("cache cmd %x/%x/%x/%x/%x/%x\n",nscp->cmnd[0],
2192                       nscp->cmnd[1],nscp->cmnd[2],nscp->cmnd[3],
2193                       nscp->cmnd[4],nscp->cmnd[5]));
2194                if ( (nscp->cmnd[4]&1) && !(ha->hdr[t].devtype&1) ) {
2195                    TRACE(("Prevent r. nonremov. drive->do nothing\n"));
2196                    nscp->result = DID_OK << 16;
2197                    nscp->sense_buffer[0] = 0;
2198                    if (!nscp_cmndinfo->wait_for_completion)
2199                        nscp_cmndinfo->wait_for_completion++;
2200                    else
2201                        gdth_scsi_done(nscp);
2202                } else {
2203                    nscp->cmnd[3] = (ha->hdr[t].devtype&1) ? 1:0;
2204                    TRACE(("Prevent/allow r. %d rem. drive %d\n",
2205                           nscp->cmnd[4],nscp->cmnd[3]));
2206                    if (!(cmd_index=gdth_fill_cache_cmd(ha, nscp, t)))
2207                        this_cmd = FALSE;
2208                }
2209                break;
2210                
2211              case RESERVE:
2212              case RELEASE:
2213                TRACE2(("cache cmd %s\n",nscp->cmnd[0] == RESERVE ?
2214                        "RESERVE" : "RELEASE"));
2215                if (!(cmd_index=gdth_fill_cache_cmd(ha, nscp, t)))
2216                    this_cmd = FALSE;
2217                break;
2218                
2219              case READ_6:
2220              case WRITE_6:
2221              case READ_10:
2222              case WRITE_10:
2223              case READ_16:
2224              case WRITE_16:
2225                if (ha->hdr[t].media_changed) {
2226                    /* return UNIT_ATTENTION */
2227                    TRACE2(("cmd 0x%x target %d: UNIT_ATTENTION\n",
2228                             nscp->cmnd[0], t));
2229                    ha->hdr[t].media_changed = FALSE;
2230                    memset((char*)nscp->sense_buffer,0,16);
2231                    nscp->sense_buffer[0] = 0x70;
2232                    nscp->sense_buffer[2] = UNIT_ATTENTION;
2233                    nscp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
2234                    if (!nscp_cmndinfo->wait_for_completion)
2235                        nscp_cmndinfo->wait_for_completion++;
2236                    else
2237                        gdth_scsi_done(nscp);
2238                } else if (!(cmd_index=gdth_fill_cache_cmd(ha, nscp, t)))
2239                    this_cmd = FALSE;
2240                break;
2241
2242              default:
2243                TRACE2(("cache cmd %x/%x/%x/%x/%x/%x unknown\n",nscp->cmnd[0],
2244                        nscp->cmnd[1],nscp->cmnd[2],nscp->cmnd[3],
2245                        nscp->cmnd[4],nscp->cmnd[5]));
2246                printk("GDT-HA %d: Unknown SCSI command 0x%x to cache service !\n",
2247                       ha->hanum, nscp->cmnd[0]);
2248                nscp->result = DID_ABORT << 16;
2249                if (!nscp_cmndinfo->wait_for_completion)
2250                    nscp_cmndinfo->wait_for_completion++;
2251                else
2252                    gdth_scsi_done(nscp);
2253                break;
2254            }
2255        }
2256
2257        if (!this_cmd)
2258            break;
2259        if (nscp == ha->req_first)
2260            ha->req_first = pscp = (Scsi_Cmnd *)nscp->SCp.ptr;
2261        else
2262            pscp->SCp.ptr = nscp->SCp.ptr;
2263        if (!next_cmd)
2264            break;
2265    }
2266
2267    if (ha->cmd_cnt > 0) {
2268        gdth_release_event(ha);
2269    }
2270
2271    if (!gdth_polling) 
2272        spin_unlock_irqrestore(&ha->smp_lock, flags);
2273
2274    if (gdth_polling && ha->cmd_cnt > 0) {
2275        if (!gdth_wait(ha, cmd_index, POLL_TIMEOUT))
2276            printk("GDT-HA %d: Command %d timed out !\n",
2277                   ha->hanum, cmd_index);
2278    }
2279}
2280
2281/*
2282 * gdth_copy_internal_data() - copy to/from a buffer onto a scsi_cmnd's
2283 * buffers, kmap_atomic() as needed.
2284 */
2285static void gdth_copy_internal_data(gdth_ha_str *ha, Scsi_Cmnd *scp,
2286                                    char *buffer, u16 count)
2287{
2288    u16 cpcount,i, max_sg = scsi_sg_count(scp);
2289    u16 cpsum,cpnow;
2290    struct scatterlist *sl;
2291    char *address;
2292
2293    cpcount = min_t(u16, count, scsi_bufflen(scp));
2294
2295    if (cpcount) {
2296        cpsum=0;
2297        scsi_for_each_sg(scp, sl, max_sg, i) {
2298            unsigned long flags;
2299            cpnow = (u16)sl->length;
2300            TRACE(("copy_internal() now %d sum %d count %d %d\n",
2301                          cpnow, cpsum, cpcount, scsi_bufflen(scp)));
2302            if (cpsum+cpnow > cpcount) 
2303                cpnow = cpcount - cpsum;
2304            cpsum += cpnow;
2305            if (!sg_page(sl)) {
2306                printk("GDT-HA %d: invalid sc/gt element in gdth_copy_internal_data()\n",
2307                       ha->hanum);
2308                return;
2309            }
2310            local_irq_save(flags);
2311            address = kmap_atomic(sg_page(sl), KM_BIO_SRC_IRQ) + sl->offset;
2312            memcpy(address, buffer, cpnow);
2313            flush_dcache_page(sg_page(sl));
2314            kunmap_atomic(address, KM_BIO_SRC_IRQ);
2315            local_irq_restore(flags);
2316            if (cpsum == cpcount)
2317                break;
2318            buffer += cpnow;
2319        }
2320    } else if (count) {
2321        printk("GDT-HA %d: SCSI command with no buffers but data transfer expected!\n",
2322               ha->hanum);
2323        WARN_ON(1);
2324    }
2325}
2326
2327static int gdth_internal_cache_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp)
2328{
2329    u8 t;
2330    gdth_inq_data inq;
2331    gdth_rdcap_data rdc;
2332    gdth_sense_data sd;
2333    gdth_modep_data mpd;
2334    struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
2335
2336    t  = scp->device->id;
2337    TRACE(("gdth_internal_cache_cmd() cmd 0x%x hdrive %d\n",
2338           scp->cmnd[0],t));
2339
2340    scp->result = DID_OK << 16;
2341    scp->sense_buffer[0] = 0;
2342
2343    switch (scp->cmnd[0]) {
2344      case TEST_UNIT_READY:
2345      case VERIFY:
2346      case START_STOP:
2347        TRACE2(("Test/Verify/Start hdrive %d\n",t));
2348        break;
2349
2350      case INQUIRY:
2351        TRACE2(("Inquiry hdrive %d devtype %d\n",
2352                t,ha->hdr[t].devtype));
2353        inq.type_qual = (ha->hdr[t].devtype&4) ? TYPE_ROM:TYPE_DISK;
2354        /* you can here set all disks to removable, if you want to do
2355           a flush using the ALLOW_MEDIUM_REMOVAL command */
2356        inq.modif_rmb = 0x00;
2357        if ((ha->hdr[t].devtype & 1) ||
2358            (ha->hdr[t].cluster_type & CLUSTER_DRIVE))
2359            inq.modif_rmb = 0x80;
2360        inq.version   = 2;
2361        inq.resp_aenc = 2;
2362        inq.add_length= 32;
2363        strcpy(inq.vendor,ha->oem_name);
2364        sprintf(inq.product,"Host Drive  #%02d",t);
2365        strcpy(inq.revision,"   ");
2366        gdth_copy_internal_data(ha, scp, (char*)&inq, sizeof(gdth_inq_data));
2367        break;
2368
2369      case REQUEST_SENSE:
2370        TRACE2(("Request sense hdrive %d\n",t));
2371        sd.errorcode = 0x70;
2372        sd.segno     = 0x00;
2373        sd.key       = NO_SENSE;
2374        sd.info      = 0;
2375        sd.add_length= 0;
2376        gdth_copy_internal_data(ha, scp, (char*)&sd, sizeof(gdth_sense_data));
2377        break;
2378
2379      case MODE_SENSE:
2380        TRACE2(("Mode sense hdrive %d\n",t));
2381        memset((char*)&mpd,0,sizeof(gdth_modep_data));
2382        mpd.hd.data_length = sizeof(gdth_modep_data);
2383        mpd.hd.dev_par     = (ha->hdr[t].devtype&2) ? 0x80:0;
2384        mpd.hd.bd_length   = sizeof(mpd.bd);
2385        mpd.bd.block_length[0] = (SECTOR_SIZE & 0x00ff0000) >> 16;
2386        mpd.bd.block_length[1] = (SECTOR_SIZE & 0x0000ff00) >> 8;
2387        mpd.bd.block_length[2] = (SECTOR_SIZE & 0x000000ff);
2388        gdth_copy_internal_data(ha, scp, (char*)&mpd, sizeof(gdth_modep_data));
2389        break;
2390
2391      case READ_CAPACITY:
2392        TRACE2(("Read capacity hdrive %d\n",t));
2393        if (ha->hdr[t].size > (u64)0xffffffff)
2394            rdc.last_block_no = 0xffffffff;
2395        else
2396            rdc.last_block_no = cpu_to_be32(ha->hdr[t].size-1);
2397        rdc.block_length  = cpu_to_be32(SECTOR_SIZE);
2398        gdth_copy_internal_data(ha, scp, (char*)&rdc, sizeof(gdth_rdcap_data));
2399        break;
2400
2401      case SERVICE_ACTION_IN:
2402        if ((scp->cmnd[1] & 0x1f) == SAI_READ_CAPACITY_16 &&
2403            (ha->cache_feat & GDT_64BIT)) {
2404            gdth_rdcap16_data rdc16;
2405
2406            TRACE2(("Read capacity (16) hdrive %d\n",t));
2407            rdc16.last_block_no = cpu_to_be64(ha->hdr[t].size-1);
2408            rdc16.block_length  = cpu_to_be32(SECTOR_SIZE);
2409            gdth_copy_internal_data(ha, scp, (char*)&rdc16,
2410                                                 sizeof(gdth_rdcap16_data));
2411        } else { 
2412            scp->result = DID_ABORT << 16;
2413        }
2414        break;
2415
2416      default:
2417        TRACE2(("Internal cache cmd 0x%x unknown\n",scp->cmnd[0]));
2418        break;
2419    }
2420
2421    if (!cmndinfo->wait_for_completion)
2422        cmndinfo->wait_for_completion++;
2423    else 
2424        return 1;
2425
2426    return 0;
2427}
2428
2429static int gdth_fill_cache_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp, u16 hdrive)
2430{
2431    register gdth_cmd_str *cmdp;
2432    struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
2433    u32 cnt, blockcnt;
2434    u64 no, blockno;
2435    int i, cmd_index, read_write, sgcnt, mode64;
2436
2437    cmdp = ha->pccb;
2438    TRACE(("gdth_fill_cache_cmd() cmd 0x%x cmdsize %d hdrive %d\n",
2439                 scp->cmnd[0],scp->cmd_len,hdrive));
2440
2441    if (ha->type==GDT_EISA && ha->cmd_cnt>0) 
2442        return 0;
2443
2444    mode64 = (ha->cache_feat & GDT_64BIT) ? TRUE : FALSE;
2445    /* test for READ_16, WRITE_16 if !mode64 ? ---
2446       not required, should not occur due to error return on 
2447       READ_CAPACITY_16 */
2448
2449    cmdp->Service = CACHESERVICE;
2450    cmdp->RequestBuffer = scp;
2451    /* search free command index */
2452    if (!(cmd_index=gdth_get_cmd_index(ha))) {
2453        TRACE(("GDT: No free command index found\n"));
2454        return 0;
2455    }
2456    /* if it's the first command, set command semaphore */
2457    if (ha->cmd_cnt == 0)
2458        gdth_set_sema0(ha);
2459
2460    /* fill command */
2461    read_write = 0;
2462    if (cmndinfo->OpCode != -1)
2463        cmdp->OpCode = cmndinfo->OpCode;   /* special cache cmd. */
2464    else if (scp->cmnd[0] == RESERVE) 
2465        cmdp->OpCode = GDT_RESERVE_DRV;
2466    else if (scp->cmnd[0] == RELEASE)
2467        cmdp->OpCode = GDT_RELEASE_DRV;
2468    else if (scp->cmnd[0] == ALLOW_MEDIUM_REMOVAL) {
2469        if (scp->cmnd[4] & 1)                   /* prevent ? */
2470            cmdp->OpCode = GDT_MOUNT;
2471        else if (scp->cmnd[3] & 1)              /* removable drive ? */
2472            cmdp->OpCode = GDT_UNMOUNT;
2473        else
2474            cmdp->OpCode = GDT_FLUSH;
2475    } else if (scp->cmnd[0] == WRITE_6 || scp->cmnd[0] == WRITE_10 ||
2476               scp->cmnd[0] == WRITE_12 || scp->cmnd[0] == WRITE_16
2477    ) {
2478        read_write = 1;
2479        if (gdth_write_through || ((ha->hdr[hdrive].rw_attribs & 1) && 
2480                                   (ha->cache_feat & GDT_WR_THROUGH)))
2481            cmdp->OpCode = GDT_WRITE_THR;
2482        else
2483            cmdp->OpCode = GDT_WRITE;
2484    } else {
2485        read_write = 2;
2486        cmdp->OpCode = GDT_READ;
2487    }
2488
2489    cmdp->BoardNode = LOCALBOARD;
2490    if (mode64) {
2491        cmdp->u.cache64.DeviceNo = hdrive;
2492        cmdp->u.cache64.BlockNo  = 1;
2493        cmdp->u.cache64.sg_canz  = 0;
2494    } else {
2495        cmdp->u.cache.DeviceNo = hdrive;
2496        cmdp->u.cache.BlockNo  = 1;
2497        cmdp->u.cache.sg_canz  = 0;
2498    }
2499
2500    if (read_write) {
2501        if (scp->cmd_len == 16) {
2502            memcpy(&no, &scp->cmnd[2], sizeof(u64));
2503            blockno = be64_to_cpu(no);
2504            memcpy(&cnt, &scp->cmnd[10], sizeof(u32));
2505            blockcnt = be32_to_cpu(cnt);
2506        } else if (scp->cmd_len == 10) {
2507            memcpy(&no, &scp->cmnd[2], sizeof(u32));
2508            blockno = be32_to_cpu(no);
2509            memcpy(&cnt, &scp->cmnd[7], sizeof(u16));
2510            blockcnt = be16_to_cpu(cnt);
2511        } else {
2512            memcpy(&no, &scp->cmnd[0], sizeof(u32));
2513            blockno = be32_to_cpu(no) & 0x001fffffUL;
2514            blockcnt= scp->cmnd[4]==0 ? 0x100 : scp->cmnd[4];
2515        }
2516        if (mode64) {
2517            cmdp->u.cache64.BlockNo = blockno;
2518            cmdp->u.cache64.BlockCnt = blockcnt;
2519        } else {
2520            cmdp->u.cache.BlockNo = (u32)blockno;
2521            cmdp->u.cache.BlockCnt = blockcnt;
2522        }
2523
2524        if (scsi_bufflen(scp)) {
2525            cmndinfo->dma_dir = (read_write == 1 ?
2526                PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE);   
2527            sgcnt = pci_map_sg(ha->pdev, scsi_sglist(scp), scsi_sg_count(scp),
2528                               cmndinfo->dma_dir);
2529            if (mode64) {
2530                struct scatterlist *sl;
2531
2532                cmdp->u.cache64.DestAddr= (u64)-1;
2533                cmdp->u.cache64.sg_canz = sgcnt;
2534                scsi_for_each_sg(scp, sl, sgcnt, i) {
2535                    cmdp->u.cache64.sg_lst[i].sg_ptr = sg_dma_address(sl);
2536#ifdef GDTH_DMA_STATISTICS
2537                    if (cmdp->u.cache64.sg_lst[i].sg_ptr > (u64)0xffffffff)
2538                        ha->dma64_cnt++;
2539                    else
2540                        ha->dma32_cnt++;
2541#endif
2542                    cmdp->u.cache64.sg_lst[i].sg_len = sg_dma_len(sl);
2543                }
2544            } else {
2545                struct scatterlist *sl;
2546
2547                cmdp->u.cache.DestAddr= 0xffffffff;
2548                cmdp->u.cache.sg_canz = sgcnt;
2549                scsi_for_each_sg(scp, sl, sgcnt, i) {
2550                    cmdp->u.cache.sg_lst[i].sg_ptr = sg_dma_address(sl);
2551#ifdef GDTH_DMA_STATISTICS
2552                    ha->dma32_cnt++;
2553#endif
2554                    cmdp->u.cache.sg_lst[i].sg_len = sg_dma_len(sl);
2555                }
2556            }
2557
2558#ifdef GDTH_STATISTICS
2559            if (max_sg < (u32)sgcnt) {
2560                max_sg = (u32)sgcnt;
2561                TRACE3(("GDT: max_sg = %d\n",max_sg));
2562            }
2563#endif
2564
2565        }
2566    }
2567    /* evaluate command size, check space */
2568    if (mode64) {
2569        TRACE(("cache cmd: addr. %x sganz %x sgptr0 %x sglen0 %x\n",
2570               cmdp->u.cache64.DestAddr,cmdp->u.cache64.sg_canz,
2571               cmdp->u.cache64.sg_lst[0].sg_ptr,
2572               cmdp->u.cache64.sg_lst[0].sg_len));
2573        TRACE(("cache cmd: cmd %d blockno. %d, blockcnt %d\n",
2574               cmdp->OpCode,cmdp->u.cache64.BlockNo,cmdp->u.cache64.BlockCnt));
2575        ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.cache64.sg_lst) +
2576            (u16)cmdp->u.cache64.sg_canz * sizeof(gdth_sg64_str);
2577    } else {
2578        TRACE(("cache cmd: addr. %x sganz %x sgptr0 %x sglen0 %x\n",
2579               cmdp->u.cache.DestAddr,cmdp->u.cache.sg_canz,
2580               cmdp->u.cache.sg_lst[0].sg_ptr,
2581               cmdp->u.cache.sg_lst[0].sg_len));
2582        TRACE(("cache cmd: cmd %d blockno. %d, blockcnt %d\n",
2583               cmdp->OpCode,cmdp->u.cache.BlockNo,cmdp->u.cache.BlockCnt));
2584        ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.cache.sg_lst) +
2585            (u16)cmdp->u.cache.sg_canz * sizeof(gdth_sg_str);
2586    }
2587    if (ha->cmd_len & 3)
2588        ha->cmd_len += (4 - (ha->cmd_len & 3));
2589
2590    if (ha->cmd_cnt > 0) {
2591        if ((ha->cmd_offs_dpmem + ha->cmd_len + DPMEM_COMMAND_OFFSET) >
2592            ha->ic_all_size) {
2593            TRACE2(("gdth_fill_cache() DPMEM overflow\n"));
2594            ha->cmd_tab[cmd_index-2].cmnd = UNUSED_CMND;
2595            return 0;
2596        }
2597    }
2598
2599    /* copy command */
2600    gdth_copy_command(ha);
2601    return cmd_index;
2602}
2603
2604static int gdth_fill_raw_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp, u8 b)
2605{
2606    register gdth_cmd_str *cmdp;
2607    u16 i;
2608    dma_addr_t sense_paddr;
2609    int cmd_index, sgcnt, mode64;
2610    u8 t,l;
2611    struct page *page;
2612    unsigned long offset;
2613    struct gdth_cmndinfo *cmndinfo;
2614
2615    t = scp->device->id;
2616    l = scp->device->lun;
2617    cmdp = ha->pccb;
2618    TRACE(("gdth_fill_raw_cmd() cmd 0x%x bus %d ID %d LUN %d\n",
2619           scp->cmnd[0],b,t,l));
2620
2621    if (ha->type==GDT_EISA && ha->cmd_cnt>0) 
2622        return 0;
2623
2624    mode64 = (ha->raw_feat & GDT_64BIT) ? TRUE : FALSE;
2625
2626    cmdp->Service = SCSIRAWSERVICE;
2627    cmdp->RequestBuffer = scp;
2628    /* search free command index */
2629    if (!(cmd_index=gdth_get_cmd_index(ha))) {
2630        TRACE(("GDT: No free command index found\n"));
2631        return 0;
2632    }
2633    /* if it's the first command, set command semaphore */
2634    if (ha->cmd_cnt == 0)
2635        gdth_set_sema0(ha);
2636
2637    cmndinfo = gdth_cmnd_priv(scp);
2638    /* fill command */  
2639    if (cmndinfo->OpCode != -1) {
2640        cmdp->OpCode           = cmndinfo->OpCode; /* special raw cmd. */
2641        cmdp->BoardNode        = LOCALBOARD;
2642        if (mode64) {
2643            cmdp->u.raw64.direction = (cmndinfo->phase >> 8);
2644            TRACE2(("special raw cmd 0x%x param 0x%x\n", 
2645                    cmdp->OpCode, cmdp->u.raw64.direction));
2646            /* evaluate command size */
2647            ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.raw64.sg_lst);
2648        } else {
2649            cmdp->u.raw.direction  = (cmndinfo->phase >> 8);
2650            TRACE2(("special raw cmd 0x%x param 0x%x\n", 
2651                    cmdp->OpCode, cmdp->u.raw.direction));
2652            /* evaluate command size */
2653            ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.raw.sg_lst);
2654        }
2655
2656    } else {
2657        page = virt_to_page(scp->sense_buffer);
2658        offset = (unsigned long)scp->sense_buffer & ~PAGE_MASK;
2659        sense_paddr = pci_map_page(ha->pdev,page,offset,
2660                                   16,PCI_DMA_FROMDEVICE);
2661
2662        cmndinfo->sense_paddr  = sense_paddr;
2663        cmdp->OpCode           = GDT_WRITE;             /* always */
2664        cmdp->BoardNode        = LOCALBOARD;
2665        if (mode64) { 
2666            cmdp->u.raw64.reserved   = 0;
2667            cmdp->u.raw64.mdisc_time = 0;
2668            cmdp->u.raw64.mcon_time  = 0;
2669            cmdp->u.raw64.clen       = scp->cmd_len;
2670            cmdp->u.raw64.target     = t;
2671            cmdp->u.raw64.lun        = l;
2672            cmdp->u.raw64.bus        = b;
2673            cmdp->u.raw64.priority   = 0;
2674            cmdp->u.raw64.sdlen      = scsi_bufflen(scp);
2675            cmdp->u.raw64.sense_len  = 16;
2676            cmdp->u.raw64.sense_data = sense_paddr;
2677            cmdp->u.raw64.direction  = 
2678                gdth_direction_tab[scp->cmnd[0]]==DOU ? GDTH_DATA_OUT:GDTH_DATA_IN;
2679            memcpy(cmdp->u.raw64.cmd,scp->cmnd,16);
2680            cmdp->u.raw64.sg_ranz    = 0;
2681        } else {
2682            cmdp->u.raw.reserved   = 0;
2683            cmdp->u.raw.mdisc_time = 0;
2684            cmdp->u.raw.mcon_time  = 0;
2685            cmdp->u.raw.clen       = scp->cmd_len;
2686            cmdp->u.raw.target     = t;
2687            cmdp->u.raw.lun        = l;
2688            cmdp->u.raw.bus        = b;
2689            cmdp->u.raw.priority   = 0;
2690            cmdp->u.raw.link_p     = 0;
2691            cmdp->u.raw.sdlen      = scsi_bufflen(scp);
2692            cmdp->u.raw.sense_len  = 16;
2693            cmdp->u.raw.sense_data = sense_paddr;
2694            cmdp->u.raw.direction  = 
2695                gdth_direction_tab[scp->cmnd[0]]==DOU ? GDTH_DATA_OUT:GDTH_DATA_IN;
2696            memcpy(cmdp->u.raw.cmd,scp->cmnd,12);
2697            cmdp->u.raw.sg_ranz    = 0;
2698        }
2699
2700        if (scsi_bufflen(scp)) {
2701            cmndinfo->dma_dir = PCI_DMA_BIDIRECTIONAL;
2702            sgcnt = pci_map_sg(ha->pdev, scsi_sglist(scp), scsi_sg_count(scp),
2703                               cmndinfo->dma_dir);
2704            if (mode64) {
2705                struct scatterlist *sl;
2706
2707                cmdp->u.raw64.sdata = (u64)-1;
2708                cmdp->u.raw64.sg_ranz = sgcnt;
2709                scsi_for_each_sg(scp, sl, sgcnt, i) {
2710                    cmdp->u.raw64.sg_lst[i].sg_ptr = sg_dma_address(sl);
2711#ifdef GDTH_DMA_STATISTICS
2712                    if (cmdp->u.raw64.sg_lst[i].sg_ptr > (u64)0xffffffff)
2713                        ha->dma64_cnt++;
2714                    else
2715                        ha->dma32_cnt++;
2716#endif
2717                    cmdp->u.raw64.sg_lst[i].sg_len = sg_dma_len(sl);
2718                }
2719            } else {
2720                struct scatterlist *sl;
2721
2722                cmdp->u.raw.sdata = 0xffffffff;
2723                cmdp->u.raw.sg_ranz = sgcnt;
2724                scsi_for_each_sg(scp, sl, sgcnt, i) {
2725                    cmdp->u.raw.sg_lst[i].sg_ptr = sg_dma_address(sl);
2726#ifdef GDTH_DMA_STATISTICS
2727                    ha->dma32_cnt++;
2728#endif
2729                    cmdp->u.raw.sg_lst[i].sg_len = sg_dma_len(sl);
2730                }
2731            }
2732
2733#ifdef GDTH_STATISTICS
2734            if (max_sg < sgcnt) {
2735                max_sg = sgcnt;
2736                TRACE3(("GDT: max_sg = %d\n",sgcnt));
2737            }
2738#endif
2739
2740        }
2741        if (mode64) {
2742            TRACE(("raw cmd: addr. %x sganz %x sgptr0 %x sglen0 %x\n",
2743                   cmdp->u.raw64.sdata,cmdp->u.raw64.sg_ranz,
2744                   cmdp->u.raw64.sg_lst[0].sg_ptr,
2745                   cmdp->u.raw64.sg_lst[0].sg_len));
2746            /* evaluate command size */
2747            ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.raw64.sg_lst) +
2748                (u16)cmdp->u.raw64.sg_ranz * sizeof(gdth_sg64_str);
2749        } else {
2750            TRACE(("raw cmd: addr. %x sganz %x sgptr0 %x sglen0 %x\n",
2751                   cmdp->u.raw.sdata,cmdp->u.raw.sg_ranz,
2752                   cmdp->u.raw.sg_lst[0].sg_ptr,
2753                   cmdp->u.raw.sg_lst[0].sg_len));
2754            /* evaluate command size */
2755            ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.raw.sg_lst) +
2756                (u16)cmdp->u.raw.sg_ranz * sizeof(gdth_sg_str);
2757        }
2758    }
2759    /* check space */
2760    if (ha->cmd_len & 3)
2761        ha->cmd_len += (4 - (ha->cmd_len & 3));
2762
2763    if (ha->cmd_cnt > 0) {
2764        if ((ha->cmd_offs_dpmem + ha->cmd_len + DPMEM_COMMAND_OFFSET) >
2765            ha->ic_all_size) {
2766            TRACE2(("gdth_fill_raw() DPMEM overflow\n"));
2767            ha->cmd_tab[cmd_index-2].cmnd = UNUSED_CMND;
2768            return 0;
2769        }
2770    }
2771
2772    /* copy command */
2773    gdth_copy_command(ha);
2774    return cmd_index;
2775}
2776
2777static int gdth_special_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp)
2778{
2779    register gdth_cmd_str *cmdp;
2780    struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
2781    int cmd_index;
2782
2783    cmdp= ha->pccb;
2784    TRACE2(("gdth_special_cmd(): "));
2785
2786    if (ha->type==GDT_EISA && ha->cmd_cnt>0) 
2787        return 0;
2788
2789    *cmdp = *cmndinfo->internal_cmd_str;
2790    cmdp->RequestBuffer = scp;
2791
2792    /* search free command index */
2793    if (!(cmd_index=gdth_get_cmd_index(ha))) {
2794        TRACE(("GDT: No free command index found\n"));
2795        return 0;
2796    }
2797
2798    /* if it's the first command, set command semaphore */
2799    if (ha->cmd_cnt == 0)
2800       gdth_set_sema0(ha);
2801
2802    /* evaluate command size, check space */
2803    if (cmdp->OpCode == GDT_IOCTL) {
2804        TRACE2(("IOCTL\n"));
2805        ha->cmd_len = 
2806            GDTOFFSOF(gdth_cmd_str,u.ioctl.p_param) + sizeof(u64);
2807    } else if (cmdp->Service == CACHESERVICE) {
2808        TRACE2(("cache command %d\n",cmdp->OpCode));
2809        if (ha->cache_feat & GDT_64BIT)
2810            ha->cmd_len = 
2811                GDTOFFSOF(gdth_cmd_str,u.cache64.sg_lst) + sizeof(gdth_sg64_str);
2812        else
2813            ha->cmd_len = 
2814                GDTOFFSOF(gdth_cmd_str,u.cache.sg_lst) + sizeof(gdth_sg_str);
2815    } else if (cmdp->Service == SCSIRAWSERVICE) {
2816        TRACE2(("raw command %d\n",cmdp->OpCode));
2817        if (ha->raw_feat & GDT_64BIT)
2818            ha->cmd_len = 
2819                GDTOFFSOF(gdth_cmd_str,u.raw64.sg_lst) + sizeof(gdth_sg64_str);
2820        else
2821            ha->cmd_len = 
2822                GDTOFFSOF(gdth_cmd_str,u.raw.sg_lst) + sizeof(gdth_sg_str);
2823    }
2824
2825    if (ha->cmd_len & 3)
2826        ha->cmd_len += (4 - (ha->cmd_len & 3));
2827
2828    if (ha->cmd_cnt > 0) {
2829        if ((ha->cmd_offs_dpmem + ha->cmd_len + DPMEM_COMMAND_OFFSET) >
2830            ha->ic_all_size) {
2831            TRACE2(("gdth_special_cmd() DPMEM overflow\n"));
2832            ha->cmd_tab[cmd_index-2].cmnd = UNUSED_CMND;
2833            return 0;
2834        }
2835    }
2836
2837    /* copy command */
2838    gdth_copy_command(ha);
2839    return cmd_index;
2840}    
2841
2842
2843/* Controller event handling functions */
2844static gdth_evt_str *gdth_store_event(gdth_ha_str *ha, u16 source, 
2845                                      u16 idx, gdth_evt_data *evt)
2846{
2847    gdth_evt_str *e;
2848    struct timeval tv;
2849
2850    /* no GDTH_LOCK_HA() ! */
2851    TRACE2(("gdth_store_event() source %d idx %d\n", source, idx));
2852    if (source == 0)                        /* no source -> no event */
2853        return NULL;
2854
2855    if (ebuffer[elastidx].event_source == source &&
2856        ebuffer[elastidx].event_idx == idx &&
2857        ((evt->size != 0 && ebuffer[elastidx].event_data.size != 0 &&
2858            !memcmp((char *)&ebuffer[elastidx].event_data.eu,
2859            (char *)&evt->eu, evt->size)) ||
2860        (evt->size == 0 && ebuffer[elastidx].event_data.size == 0 &&
2861            !strcmp((char *)&ebuffer[elastidx].event_data.event_string,
2862            (char *)&evt->event_string)))) { 
2863        e = &ebuffer[elastidx];
2864        do_gettimeofday(&tv);
2865        e->last_stamp = tv.tv_sec;
2866        ++e->same_count;
2867    } else {
2868        if (ebuffer[elastidx].event_source != 0) {  /* entry not free ? */
2869            ++elastidx;
2870            if (elastidx == MAX_EVENTS)
2871                elastidx = 0;
2872            if (elastidx == eoldidx) {              /* reached mark ? */
2873                ++eoldidx;
2874                if (eoldidx == MAX_EVENTS)
2875                    eoldidx = 0;
2876            }
2877        }
2878        e = &ebuffer[elastidx];
2879        e->event_source = source;
2880        e->event_idx = idx;
2881        do_gettimeofday(&tv);
2882        e->first_stamp = e->last_stamp = tv.tv_sec;
2883        e->same_count = 1;
2884        e->event_data = *evt;
2885        e->application = 0;
2886    }
2887    return e;
2888}
2889
2890static int gdth_read_event(gdth_ha_str *ha, int handle, gdth_evt_str *estr)
2891{
2892    gdth_evt_str *e;
2893    int eindex;
2894    unsigned long flags;
2895
2896    TRACE2(("gdth_read_event() handle %d\n", handle));
2897    spin_lock_irqsave(&ha->smp_lock, flags);
2898    if (handle == -1)
2899        eindex = eoldidx;
2900    else
2901        eindex = handle;
2902    estr->event_source = 0;
2903
2904    if (eindex < 0 || eindex >= MAX_EVENTS) {
2905        spin_unlock_irqrestore(&ha->smp_lock, flags);
2906        return eindex;
2907    }
2908    e = &ebuffer[eindex];
2909    if (e->event_source != 0) {
2910        if (eindex != elastidx) {
2911            if (++eindex == MAX_EVENTS)
2912                eindex = 0;
2913        } else {
2914            eindex = -1;
2915        }
2916        memcpy(estr, e, sizeof(gdth_evt_str));
2917    }
2918    spin_unlock_irqrestore(&ha->smp_lock, flags);
2919    return eindex;
2920}
2921
2922static void gdth_readapp_event(gdth_ha_str *ha,
2923                               u8 application, gdth_evt_str *estr)
2924{
2925    gdth_evt_str *e;
2926    int eindex;
2927    unsigned long flags;
2928    u8 found = FALSE;
2929
2930    TRACE2(("gdth_readapp_event() app. %d\n", application));
2931    spin_lock_irqsave(&ha->smp_lock, flags);
2932    eindex = eoldidx;
2933    for (;;) {
2934        e = &ebuffer[eindex];
2935        if (e->event_source == 0)
2936            break;
2937        if ((e->application & application) == 0) {
2938            e->application |= application;
2939            found = TRUE;
2940            break;
2941        }
2942        if (eindex == elastidx)
2943            break;
2944        if (++eindex == MAX_EVENTS)
2945            eindex = 0;
2946    }
2947    if (found)
2948        memcpy(estr, e, sizeof(gdth_evt_str));
2949    else
2950        estr->event_source = 0;
2951    spin_unlock_irqrestore(&ha->smp_lock, flags);
2952}
2953
2954static void gdth_clear_events(void)
2955{
2956    TRACE(("gdth_clear_events()"));
2957
2958    eoldidx = elastidx = 0;
2959    ebuffer[0].event_source = 0;
2960}
2961
2962
2963/* SCSI interface functions */
2964
2965static irqreturn_t __gdth_interrupt(gdth_ha_str *ha,
2966                                    int gdth_from_wait, int* pIndex)
2967{
2968    gdt6m_dpram_str __iomem *dp6m_ptr = NULL;
2969    gdt6_dpram_str __iomem *dp6_ptr;
2970    gdt2_dpram_str __iomem *dp2_ptr;
2971    Scsi_Cmnd *scp;
2972    int rval, i;
2973    u8 IStatus;
2974    u16 Service;
2975    unsigned long flags = 0;
2976#ifdef INT_COAL
2977    int coalesced = FALSE;
2978    int next = FALSE;
2979    gdth_coal_status *pcs = NULL;
2980    int act_int_coal = 0;       
2981#endif
2982
2983    TRACE(("gdth_interrupt() IRQ %d\n", ha->irq));
2984
2985    /* if polling and not from gdth_wait() -> return */
2986    if (gdth_polling) {
2987        if (!gdth_from_wait) {
2988            return IRQ_HANDLED;
2989        }
2990    }
2991
2992    if (!gdth_polling)
2993        spin_lock_irqsave(&ha->smp_lock, flags);
2994
2995    /* search controller */
2996    IStatus = gdth_get_status(ha);
2997    if (IStatus == 0) {
2998        /* spurious interrupt */
2999        if (!gdth_polling)
3000            spin_unlock_irqrestore(&ha->smp_lock, flags);
3001        return IRQ_HANDLED;
3002    }
3003
3004#ifdef GDTH_STATISTICS
3005    ++act_ints;
3006#endif
3007
3008#ifdef INT_COAL
3009    /* See if the fw is returning coalesced status */
3010    if (IStatus == COALINDEX) {
3011        /* Coalesced status.  Setup the initial status 
3012           buffer pointer and flags */
3013        pcs = ha->coal_stat;
3014        coalesced = TRUE;        
3015        next = TRUE;
3016    }
3017
3018    do {
3019        if (coalesced) {
3020            /* For coalesced requests all status
3021               information is found in the status buffer */
3022            IStatus = (u8)(pcs->status & 0xff);
3023        }
3024#endif
3025    
3026        if (ha->type == GDT_EISA) {
3027            if (IStatus & 0x80) {                       /* error flag */
3028                IStatus &= ~0x80;
3029                ha->status = inw(ha->bmic + MAILBOXREG+8);
3030                TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
3031            } else                                      /* no error */
3032                ha->status = S_OK;
3033            ha->info = inl(ha->bmic + MAILBOXREG+12);
3034            ha->service = inw(ha->bmic + MAILBOXREG+10);
3035            ha->info2 = inl(ha->bmic + MAILBOXREG+4);
3036
3037            outb(0xff, ha->bmic + EDOORREG);    /* acknowledge interrupt */
3038            outb(0x00, ha->bmic + SEMA1REG);    /* reset status semaphore */
3039        } else if (ha->type == GDT_ISA) {
3040            dp2_ptr = ha->brd;
3041            if (IStatus & 0x80) {                       /* error flag */
3042                IStatus &= ~0x80;
3043                ha->status = readw(&dp2_ptr->u.ic.Status);
3044                TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
3045            } else                                      /* no error */
3046                ha->status = S_OK;
3047            ha->info = readl(&dp2_ptr->u.ic.Info[0]);
3048            ha->service = readw(&dp2_ptr->u.ic.Service);
3049            ha->info2 = readl(&dp2_ptr->u.ic.Info[1]);
3050
3051            writeb(0xff, &dp2_ptr->io.irqdel); /* acknowledge interrupt */
3052            writeb(0, &dp2_ptr->u.ic.Cmd_Index);/* reset command index */
3053            writeb(0, &dp2_ptr->io.Sema1);     /* reset status semaphore */
3054        } else if (ha->type == GDT_PCI) {
3055            dp6_ptr = ha->brd;
3056            if (IStatus & 0x80) {                       /* error flag */
3057                IStatus &= ~0x80;
3058                ha->status = readw(&dp6_ptr->u.ic.Status);
3059                TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
3060            } else                                      /* no error */
3061                ha->status = S_OK;
3062            ha->info = readl(&dp6_ptr->u.ic.Info[0]);
3063            ha->service = readw(&dp6_ptr->u.ic.Service);
3064            ha->info2 = readl(&dp6_ptr->u.ic.Info[1]);
3065
3066            writeb(0xff, &dp6_ptr->io.irqdel); /* acknowledge interrupt */
3067            writeb(0, &dp6_ptr->u.ic.Cmd_Index);/* reset command index */
3068            writeb(0, &dp6_ptr->io.Sema1);     /* reset status semaphore */
3069        } else if (ha->type == GDT_PCINEW) {
3070            if (IStatus & 0x80) {                       /* error flag */
3071                IStatus &= ~0x80;
3072                ha->status = inw(PTR2USHORT(&ha->plx->status));
3073                TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
3074            } else
3075                ha->status = S_OK;
3076            ha->info = inl(PTR2USHORT(&ha->plx->info[0]));
3077            ha->service = inw(PTR2USHORT(&ha->plx->service));
3078            ha->info2 = inl(PTR2USHORT(&ha->plx->info[1]));
3079
3080            outb(0xff, PTR2USHORT(&ha->plx->edoor_reg)); 
3081            outb(0x00, PTR2USHORT(&ha->plx->sema1_reg)); 
3082        } else if (ha->type == GDT_PCIMPR) {
3083            dp6m_ptr = ha->brd;
3084            if (IStatus & 0x80) {                       /* error flag */
3085                IStatus &= ~0x80;
3086#ifdef INT_COAL
3087                if (coalesced)
3088                    ha->status = pcs->ext_status & 0xffff;
3089                else 
3090#endif
3091                    ha->status = readw(&dp6m_ptr->i960r.status);
3092                TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
3093            } else                                      /* no error */
3094                ha->status = S_OK;
3095#ifdef INT_COAL
3096            /* get information */
3097            if (coalesced) {    
3098                ha->info = pcs->info0;
3099                ha->info2 = pcs->info1;
3100                ha->service = (pcs->ext_status >> 16) & 0xffff;
3101            } else
3102#endif
3103            {
3104                ha->info = readl(&dp6m_ptr->i960r.info[0]);
3105                ha->service = readw(&dp6m_ptr->i960r.service);
3106                ha->info2 = readl(&dp6m_ptr->i960r.info[1]);
3107            }
3108            /* event string */
3109            if (IStatus == ASYNCINDEX) {
3110                if (ha->service != SCREENSERVICE &&
3111                    (ha->fw_vers & 0xff) >= 0x1a) {
3112                    ha->dvr.severity = readb
3113                        (&((gdt6m_dpram_str __iomem *)ha->brd)->i960r.severity);
3114                    for (i = 0; i < 256; ++i) {
3115                        ha->dvr.event_string[i] = readb
3116                            (&((gdt6m_dpram_str __iomem *)ha->brd)->i960r.evt_str[i]);
3117                        if (ha->dvr.event_string[i] == 0)
3118                            break;
3119                    }
3120                }
3121            }
3122#ifdef INT_COAL
3123            /* Make sure that non coalesced interrupts get cleared
3124               before being handled by gdth_async_event/gdth_sync_event */
3125            if (!coalesced)
3126#endif                          
3127            {
3128                writeb(0xff, &dp6m_ptr->i960r.edoor_reg);
3129                writeb(0, &dp6m_ptr->i960r.sema1_reg);
3130            }
3131        } else {
3132            TRACE2(("gdth_interrupt() unknown controller type\n"));
3133            if (!gdth_polling)
3134                spin_unlock_irqrestore(&ha->smp_lock, flags);
3135            return IRQ_HANDLED;
3136        }
3137
3138        TRACE(("gdth_interrupt() index %d stat %d info %d\n",
3139               IStatus,ha->status,ha->info));
3140
3141        if (gdth_from_wait) {
3142            *pIndex = (int)IStatus;
3143        }
3144
3145        if (IStatus == ASYNCINDEX) {
3146            TRACE2(("gdth_interrupt() async. event\n"));
3147            gdth_async_event(ha);
3148            if (!gdth_polling)
3149                spin_unlock_irqrestore(&ha->smp_lock, flags);
3150            gdth_next(ha);
3151            return IRQ_HANDLED;
3152        } 
3153
3154        if (IStatus == SPEZINDEX) {
3155            TRACE2(("Service unknown or not initialized !\n"));
3156            ha->dvr.size = sizeof(ha->dvr.eu.driver);
3157            ha->dvr.eu.driver.ionode = ha->hanum;
3158            gdth_store_event(ha, ES_DRIVER, 4, &ha->dvr);
3159            if (!gdth_polling)
3160                spin_unlock_irqrestore(&ha->smp_lock, flags);
3161            return IRQ_HANDLED;
3162        }
3163        scp     = ha->cmd_tab[IStatus-2].cmnd;
3164        Service = ha->cmd_tab[IStatus-2].service;
3165        ha->cmd_tab[IStatus-2].cmnd = UNUSED_CMND;
3166        if (scp == UNUSED_CMND) {
3167            TRACE2(("gdth_interrupt() index to unused command (%d)\n",IStatus));
3168            ha->dvr.size = sizeof(ha->dvr.eu.driver);
3169            ha->dvr.eu.driver.ionode = ha->hanum;
3170            ha->dvr.eu.driver.index = IStatus;
3171            gdth_store_event(ha, ES_DRIVER, 1, &ha->dvr);
3172            if (!gdth_polling)
3173                spin_unlock_irqrestore(&ha->smp_lock, flags);
3174            return IRQ_HANDLED;
3175        }
3176        if (scp == INTERNAL_CMND) {
3177            TRACE(("gdth_interrupt() answer to internal command\n"));
3178            if (!gdth_polling)
3179                spin_unlock_irqrestore(&ha->smp_lock, flags);
3180            return IRQ_HANDLED;
3181        }
3182
3183        TRACE(("gdth_interrupt() sync. status\n"));
3184        rval = gdth_sync_event(ha,Service,IStatus,scp);
3185        if (!gdth_polling)
3186            spin_unlock_irqrestore(&ha->smp_lock, flags);
3187        if (rval == 2) {
3188            gdth_putq(ha, scp, gdth_cmnd_priv(scp)->priority);
3189        } else if (rval == 1) {
3190            gdth_scsi_done(scp);
3191        }
3192
3193#ifdef INT_COAL
3194        if (coalesced) {
3195            /* go to the next status in the status buffer */
3196            ++pcs;
3197#ifdef GDTH_STATISTICS
3198            ++act_int_coal;
3199            if (act_int_coal > max_int_coal) {
3200                max_int_coal = act_int_coal;
3201                printk("GDT: max_int_coal = %d\n",(u16)max_int_coal);
3202            }
3203#endif      
3204            /* see if there is another status */
3205            if (pcs->status == 0)    
3206                /* Stop the coalesce loop */
3207                next = FALSE;
3208        }
3209    } while (next);
3210
3211    /* coalescing only for new GDT_PCIMPR controllers available */      
3212    if (ha->type == GDT_PCIMPR && coalesced) {
3213        writeb(0xff, &dp6m_ptr->i960r.edoor_reg);
3214        writeb(0, &dp6m_ptr->i960r.sema1_reg);
3215    }
3216#endif
3217
3218    gdth_next(ha);
3219    return IRQ_HANDLED;
3220}
3221
3222static irqreturn_t gdth_interrupt(int irq, void *dev_id)
3223{
3224        gdth_ha_str *ha = dev_id;
3225
3226        return __gdth_interrupt(ha, false, NULL);
3227}
3228
3229static int gdth_sync_event(gdth_ha_str *ha, int service, u8 index,
3230                                                              Scsi_Cmnd *scp)
3231{
3232    gdth_msg_str *msg;
3233    gdth_cmd_str *cmdp;
3234    u8 b, t;
3235    struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
3236
3237    cmdp = ha->pccb;
3238    TRACE(("gdth_sync_event() serv %d status %d\n",
3239           service,ha->status));
3240
3241    if (service == SCREENSERVICE) {
3242        msg  = ha->pmsg;
3243        TRACE(("len: %d, answer: %d, ext: %d, alen: %d\n",
3244               msg->msg_len,msg->msg_answer,msg->msg_ext,msg->msg_alen));
3245        if (msg->msg_len > MSGLEN+1)
3246            msg->msg_len = MSGLEN+1;
3247        if (msg->msg_len)
3248            if (!(msg->msg_answer && msg->msg_ext)) {
3249                msg->msg_text[msg->msg_len] = '\0';
3250                printk("%s",msg->msg_text);
3251            }
3252
3253        if (msg->msg_ext && !msg->msg_answer) {
3254            while (gdth_test_busy(ha))
3255                gdth_delay(0);
3256            cmdp->Service       = SCREENSERVICE;
3257            cmdp->RequestBuffer = SCREEN_CMND;
3258            gdth_get_cmd_index(ha);
3259            gdth_set_sema0(ha);
3260            cmdp->OpCode        = GDT_READ;
3261            cmdp->BoardNode     = LOCALBOARD;
3262            cmdp->u.screen.reserved  = 0;
3263            cmdp->u.screen.su.msg.msg_handle= msg->msg_handle;
3264            cmdp->u.screen.su.msg.msg_addr  = ha->msg_phys;
3265            ha->cmd_offs_dpmem = 0;
3266            ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.screen.su.msg.msg_addr) 
3267                + sizeof(u64);
3268            ha->cmd_cnt = 0;
3269            gdth_copy_command(ha);
3270            gdth_release_event(ha);
3271            return 0;
3272        }
3273
3274        if (msg->msg_answer && msg->msg_alen) {
3275            /* default answers (getchar() not possible) */
3276            if (msg->msg_alen == 1) {
3277                msg->msg_alen = 0;
3278                msg->msg_len = 1;
3279                msg->msg_text[0] = 0;
3280            } else {
3281                msg->msg_alen -= 2;
3282                msg->msg_len = 2;
3283                msg->msg_text[0] = 1;
3284                msg->msg_text[1] = 0;
3285            }
3286            msg->msg_ext    = 0;
3287            msg->msg_answer = 0;
3288            while (gdth_test_busy(ha))
3289                gdth_delay(0);
3290            cmdp->Service       = SCREENSERVICE;
3291            cmdp->RequestBuffer = SCREEN_CMND;
3292            gdth_get_cmd_index(ha);
3293            gdth_set_sema0(ha);
3294            cmdp->OpCode        = GDT_WRITE;
3295            cmdp->BoardNode     = LOCALBOARD;
3296            cmdp->u.screen.reserved  = 0;
3297            cmdp->u.screen.su.msg.msg_handle= msg->msg_handle;
3298            cmdp->u.screen.su.msg.msg_addr  = ha->msg_phys;
3299            ha->cmd_offs_dpmem = 0;
3300            ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.screen.su.msg.msg_addr) 
3301                + sizeof(u64);
3302            ha->cmd_cnt = 0;
3303            gdth_copy_command(ha);
3304            gdth_release_event(ha);
3305            return 0;
3306        }
3307        printk("\n");
3308
3309    } else {
3310        b = scp->device->channel;
3311        t = scp->device->id;
3312        if (cmndinfo->OpCode == -1 && b != ha->virt_bus) {
3313            ha->raw[BUS_L2P(ha,b)].io_cnt[t]--;
3314        }
3315        /* cache or raw service */
3316        if (ha->status == S_BSY) {
3317            TRACE2(("Controller busy -> retry !\n"));
3318            if (cmndinfo->OpCode == GDT_MOUNT)
3319                cmndinfo->OpCode = GDT_CLUST_INFO;
3320            /* retry */
3321            return 2;
3322        }
3323        if (scsi_bufflen(scp))
3324            pci_unmap_sg(ha->pdev, scsi_sglist(scp), scsi_sg_count(scp),
3325                         cmndinfo->dma_dir);
3326
3327        if (cmndinfo->sense_paddr)
3328            pci_unmap_page(ha->pdev, cmndinfo->sense_paddr, 16,
3329                                                           PCI_DMA_FROMDEVICE);
3330
3331        if (ha->status == S_OK) {
3332            cmndinfo->status = S_OK;
3333            cmndinfo->info = ha->info;
3334            if (cmndinfo->OpCode != -1) {
3335                TRACE2(("gdth_sync_event(): special cmd 0x%x OK\n",
3336                        cmndinfo->OpCode));
3337                /* special commands GDT_CLUST_INFO/GDT_MOUNT ? */
3338                if (cmndinfo->OpCode == GDT_CLUST_INFO) {
3339                    ha->hdr[t].cluster_type = (u8)ha->info;
3340                    if (!(ha->hdr[t].cluster_type & 
3341                        CLUSTER_MOUNTED)) {
3342                        /* NOT MOUNTED -> MOUNT */
3343                        cmndinfo->OpCode = GDT_MOUNT;
3344                        if (ha->hdr[t].cluster_type & 
3345                            CLUSTER_RESERVED) {
3346                            /* cluster drive RESERVED (on the other node) */
3347                            cmndinfo->phase = -2;      /* reservation conflict */
3348                        }
3349                    } else {
3350                        cmndinfo->OpCode = -1;
3351                    }
3352                } else {
3353                    if (cmndinfo->OpCode == GDT_MOUNT) {
3354                        ha->hdr[t].cluster_type |= CLUSTER_MOUNTED;
3355                        ha->hdr[t].media_changed = TRUE;
3356                    } else if (cmndinfo->OpCode == GDT_UNMOUNT) {
3357                        ha->hdr[t].cluster_type &= ~CLUSTER_MOUNTED;
3358                        ha->hdr[t].media_changed = TRUE;
3359                    } 
3360                    cmndinfo->OpCode = -1;
3361                }
3362                /* retry */
3363                cmndinfo->priority = HIGH_PRI;
3364                return 2;
3365            } else {
3366                /* RESERVE/RELEASE ? */
3367                if (scp->cmnd[0] == RESERVE) {
3368                    ha->hdr[t].cluster_type |= CLUSTER_RESERVED;
3369                } else if (scp->cmnd[0] == RELEASE) {
3370                    ha->hdr[t].cluster_type &= ~CLUSTER_RESERVED;
3371                }           
3372                scp->result = DID_OK << 16;
3373                scp->sense_buffer[0] = 0;
3374            }
3375        } else {
3376            cmndinfo->status = ha->status;
3377            cmndinfo->info = ha->info;
3378
3379            if (cmndinfo->OpCode != -1) {
3380                TRACE2(("gdth_sync_event(): special cmd 0x%x error 0x%x\n",
3381                        cmndinfo->OpCode, ha->status));
3382                if (cmndinfo->OpCode == GDT_SCAN_START ||
3383                    cmndinfo->OpCode == GDT_SCAN_END) {
3384                    cmndinfo->OpCode = -1;
3385                    /* retry */
3386                    cmndinfo->priority = HIGH_PRI;
3387                    return 2;
3388                }
3389                memset((char*)scp->sense_buffer,0,16);
3390                scp->sense_buffer[0] = 0x70;
3391                scp->sense_buffer[2] = NOT_READY;
3392                scp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
3393            } else if (service == CACHESERVICE) {
3394                if (ha->status == S_CACHE_UNKNOWN &&
3395                    (ha->hdr[t].cluster_type & 
3396                     CLUSTER_RESERVE_STATE) == CLUSTER_RESERVE_STATE) {
3397                    /* bus reset -> force GDT_CLUST_INFO */
3398                    ha->hdr[t].cluster_type &= ~CLUSTER_RESERVED;
3399                }
3400                memset((char*)scp->sense_buffer,0,16);
3401                if (ha->status == (u16)S_CACHE_RESERV) {
3402                    scp->result = (DID_OK << 16) | (RESERVATION_CONFLICT << 1);
3403                } else {
3404                    scp->sense_buffer[0] = 0x70;
3405                    scp->sense_buffer[2] = NOT_READY;
3406                    scp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
3407                }
3408                if (!cmndinfo->internal_command) {
3409                    ha->dvr.size = sizeof(ha->dvr.eu.sync);
3410                    ha->dvr.eu.sync.ionode  = ha->hanum;
3411                    ha->dvr.eu.sync.service = service;
3412                    ha->dvr.eu.sync.status  = ha->status;
3413                    ha->dvr.eu.sync.info    = ha->info;
3414                    ha->dvr.eu.sync.hostdrive = t;
3415                    if (ha->status >= 0x8000)
3416                        gdth_store_event(ha, ES_SYNC, 0, &ha->dvr);
3417                    else
3418                        gdth_store_event(ha, ES_SYNC, service, &ha->dvr);
3419                }
3420            } else {
3421                /* sense buffer filled from controller firmware (DMA) */
3422                if (ha->status != S_RAW_SCSI || ha->info >= 0x100) {
3423                    scp->result = DID_BAD_TARGET << 16;
3424                } else {
3425                    scp->result = (DID_OK << 16) | ha->info;
3426                }
3427            }
3428        }
3429        if (!cmndinfo->wait_for_completion)
3430            cmndinfo->wait_for_completion++;
3431        else 
3432            return 1;
3433    }
3434
3435    return 0;
3436}
3437
3438static char *async_cache_tab[] = {
3439/* 0*/  "\011\000\002\002\002\004\002\006\004"
3440        "GDT HA %u, service %u, async. status %u/%lu unknown",
3441/* 1*/  "\011\000\002\002\002\004\002\006\004"
3442        "GDT HA %u, service %u, async. status %u/%lu unknown",
3443/* 2*/  "\005\000\002\006\004"
3444        "GDT HA %u, Host Drive %lu not ready",
3445/* 3*/  "\005\000\002\006\004"
3446        "GDT HA %u, Host Drive %lu: REASSIGN not successful and/or data error on reassigned blocks. Drive may crash in the future and should be replaced",
3447/* 4*/  "\005\000\002\006\004"
3448        "GDT HA %u, mirror update on Host Drive %lu failed",
3449/* 5*/  "\005\000\002\006\004"
3450        "GDT HA %u, Mirror Drive %lu failed",
3451/* 6*/  "\005\000\002\006\004"
3452        "GDT HA %u, Mirror Drive %lu: REASSIGN not successful and/or data error on reassigned blocks. Drive may crash in the future and should be replaced",
3453/* 7*/  "\005\000\002\006\004"
3454        "GDT HA %u, Host Drive %lu write protected",
3455/* 8*/  "\005\000\002\006\004"
3456        "GDT HA %u, media changed in Host Drive %lu",
3457/* 9*/  "\005\000\002\006\004"
3458        "GDT HA %u, Host Drive %lu is offline",
3459/*10*/  "\005\000\002\006\004"
3460        "GDT HA %u, media change of Mirror Drive %lu",
3461/*11*/  "\005\000\002\006\004"
3462        "GDT HA %u, Mirror Drive %lu is write protected",
3463/*12*/  "\005\000\002\006\004"
3464        "GDT HA %u, general error on Host Drive %lu. Please check the devices of this drive!",
3465/*13*/  "\007\000\002\006\002\010\002"
3466        "GDT HA %u, Array Drive %u: Cache Drive %u failed",
3467/*14*/  "\005\000\002\006\002"
3468        "GDT HA %u, Array Drive %u: FAIL state entered",
3469/*15*/  "\005\000\002\006\002"
3470        "GDT HA %u, Array Drive %u: error",
3471/*16*/  "\007\000\002\006\002\010\002"
3472        "GDT HA %u, Array Drive %u: failed drive replaced by Cache Drive %u",
3473/*17*/  "\005\000\002\006\002"
3474        "GDT HA %u, Array Drive %u: parity build failed",
3475/*18*/  "\005\000\002\006\002"
3476        "GDT HA %u, Array Drive %u: drive rebuild failed",
3477/*19*/  "\005\000\002\010\002"
3478        "GDT HA %u, Test of Hot Fix %u failed",
3479/*20*/  "\005\000\002\006\002"
3480        "GDT HA %u, Array Drive %u: drive build finished successfully",
3481/*21*/  "\005\000\002\006\002"
3482        "GDT HA %u, Array Drive %u: drive rebuild finished successfully",
3483/*22*/  "\007\000\002\006\002\010\002"
3484        "GDT HA %u, Array Drive %u: Hot Fix %u activated",
3485/*23*/  "\005\000\002\006\002"
3486        "GDT HA %u, Host Drive %u: processing of i/o aborted due to serious drive error",
3487/*24*/  "\005\000\002\010\002"
3488        "GDT HA %u, mirror update on Cache Drive %u completed",
3489/*25*/  "\005\000\002\010\002"
3490        "GDT HA %u, mirror update on Cache Drive %lu failed",
3491/*26*/  "\005\000\002\006\002"
3492        "GDT HA %u, Array Drive %u: drive rebuild started",
3493/*27*/  "\005\000\002\012\001"
3494        "GDT HA %u, Fault bus %u: SHELF OK detected",
3495/*28*/  "\005\000\002\012\001"
3496        "GDT HA %u, Fault bus %u: SHELF not OK detected",
3497/*29*/  "\007\000\002\012\001\013\001"
3498        "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug started",
3499/*30*/  "\007\000\002\012\001\013\001"
3500        "GDT HA %u, Fault bus %u, ID %u: new disk detected",
3501/*31*/  "\007\000\002\012\001\013\001"
3502        "GDT HA %u, Fault bus %u, ID %u: old disk detected",
3503/*32*/  "\007\000\002\012\001\013\001"
3504        "GDT HA %u, Fault bus %u, ID %u: plugging an active disk is invalid",
3505/*33*/  "\007\000\002\012\001\013\001"
3506        "GDT HA %u, Fault bus %u, ID %u: invalid device detected",
3507/*34*/  "\011\000\002\012\001\013\001\006\004"
3508        "GDT HA %u, Fault bus %u, ID %u: insufficient disk capacity (%lu MB required)",
3509/*35*/  "\007\000\002\012\001\013\001"
3510        "GDT HA %u, Fault bus %u, ID %u: disk write protected",
3511/*36*/  "\007\000\002\012\001\013\001"
3512        "GDT HA %u, Fault bus %u, ID %u: disk not available",
3513/*37*/  "\007\000\002\012\001\006\004"
3514        "GDT HA %u, Fault bus %u: swap detected (%lu)",
3515/*38*/  "\007\000\002\012\001\013\001"
3516        "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug finished successfully",
3517/*39*/  "\007\000\002\012\001\013\001"
3518        "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug aborted due to user Hot Plug",
3519/*40*/  "\007\000\002\012\001\013\001"
3520        "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug aborted",
3521/*41*/  "\007\000\002\012\001\013\001"
3522        "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug for Hot Fix started",
3523/*42*/  "\005\000\002\006\002"
3524        "GDT HA %u, Array Drive %u: drive build started",
3525/*43*/  "\003\000\002"
3526        "GDT HA %u, DRAM parity error detected",
3527/*44*/  "\005\000\002\006\002"
3528        "GDT HA %u, Mirror Drive %u: update started",
3529/*45*/  "\007\000\002\006\002\010\002"
3530        "GDT HA %u, Mirror Drive %u: Hot Fix %u activated",
3531/*46*/  "\005\000\002\006\002"
3532        "GDT HA %u, Array Drive %u: no matching Pool Hot Fix Drive available",
3533/*47*/  "\005\000\002\006\002"
3534        "GDT HA %u, Array Drive %u: Pool Hot Fix Drive available",
3535/*48*/  "\005\000\002\006\002"
3536        "GDT HA %u, Mirror Drive %u: no matching Pool Hot Fix Drive available",
3537/*49*/  "\005\000\002\006\002"
3538        "GDT HA %u, Mirror Drive %u: Pool Hot Fix Drive available",
3539/*50*/  "\007\000\002\012\001\013\001"
3540        "GDT HA %u, SCSI bus %u, ID %u: IGNORE_WIDE_RESIDUE message received",
3541/*51*/  "\005\000\002\006\002"
3542        "GDT HA %u, Array Drive %u: expand started",
3543/*52*/  "\005\000\002\006\002"
3544        "GDT HA %u, Array Drive %u: expand finished successfully",
3545/*53*/  "\005\000\002\006\002"
3546        "GDT HA %u, Array Drive %u: expand failed",
3547/*54*/  "\003\000\002"
3548        "GDT HA %u, CPU temperature critical",
3549/*55*/  "\003\000\002"
3550        "GDT HA %u, CPU temperature OK",
3551/*56*/  "\005\000\002\006\004"
3552        "GDT HA %u, Host drive %lu created",
3553/*57*/  "\005\000\002\006\002"
3554        "GDT HA %u, Array Drive %u: expand restarted",
3555/*58*/  "\005\000\002\006\002"
3556        "GDT HA %u, Array Drive %u: expand stopped",
3557/*59*/  "\005\000\002\010\002"
3558        "GDT HA %u, Mirror Drive %u: drive build quited",
3559/*60*/  "\005\000\002\006\002"
3560        "GDT HA %u, Array Drive %u: parity build quited",
3561/*61*/  "\005\000\002\006\002"
3562        "GDT HA %u, Array Drive %u: drive rebuild quited",
3563/*62*/  "\005\000\002\006\002"
3564        "GDT HA %u, Array Drive %u: parity verify started",
3565/*63*/  "\005\000\002\006\002"
3566        "GDT HA %u, Array Drive %u: parity verify done",
3567/*64*/  "\005\000\002\006\002"
3568        "GDT HA %u, Array Drive %u: parity verify failed",
3569/*65*/  "\005\000\002\006\002"
3570        "GDT HA %u, Array Drive %u: parity error detected",
3571/*66*/  "\005\000\002\006\002"
3572        "GDT HA %u, Array Drive %u: parity verify quited",
3573/*67*/  "\005\000\002\006\002"
3574        "GDT HA %u, Host Drive %u reserved",
3575/*68*/  "\005\000\002\006\002"
3576        "GDT HA %u, Host Drive %u mounted and released",
3577/*69*/  "\005\000\002\006\002"
3578        "GDT HA %u, Host Drive %u released",
3579/*70*/  "\003\000\002"
3580        "GDT HA %u, DRAM error detected and corrected with ECC",
3581/*71*/  "\003\000\002"
3582        "GDT HA %u, Uncorrectable DRAM error detected with ECC",
3583/*72*/  "\011\000\002\012\001\013\001\014\001"
3584        "GDT HA %u, SCSI bus %u, ID %u, LUN %u: reassigning block",
3585/*73*/  "\005\000\002\006\002"
3586        "GDT HA %u, Host drive %u resetted locally",
3587/*74*/  "\005\000\002\006\002"
3588        "GDT HA %u, Host drive %u resetted remotely",
3589/*75*/  "\003\000\002"
3590        "GDT HA %u, async. status 75 unknown",
3591};
3592
3593
3594static int gdth_async_event(gdth_ha_str *ha)
3595{
3596    gdth_cmd_str *cmdp;
3597    int cmd_index;
3598
3599    cmdp= ha->pccb;
3600    TRACE2(("gdth_async_event() ha %d serv %d\n",
3601            ha->hanum, ha->service));
3602
3603    if (ha->service == SCREENSERVICE) {
3604        if (ha->status == MSG_REQUEST) {
3605            while (gdth_test_busy(ha))
3606                gdth_delay(0);
3607            cmdp->Service       = SCREENSERVICE;
3608            cmdp->RequestBuffer = SCREEN_CMND;
3609            cmd_index = gdth_get_cmd_index(ha);
3610            gdth_set_sema0(ha);
3611            cmdp->OpCode        = GDT_READ;
3612            cmdp->BoardNode     = LOCALBOARD;
3613            cmdp->u.screen.reserved  = 0;
3614            cmdp->u.screen.su.msg.msg_handle= MSG_INV_HANDLE;
3615            cmdp->u.screen.su.msg.msg_addr  = ha->msg_phys;
3616            ha->cmd_offs_dpmem = 0;
3617            ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.screen.su.msg.msg_addr) 
3618                + sizeof(u64);
3619            ha->cmd_cnt = 0;
3620            gdth_copy_command(ha);
3621            if (ha->type == GDT_EISA)
3622                printk("[EISA slot %d] ",(u16)ha->brd_phys);
3623            else if (ha->type == GDT_ISA)
3624                printk("[DPMEM 0x%4X] ",(u16)ha->brd_phys);
3625            else 
3626                printk("[PCI %d/%d] ",(u16)(ha->brd_phys>>8),
3627                       (u16)((ha->brd_phys>>3)&0x1f));
3628            gdth_release_event(ha);
3629        }
3630
3631    } else {
3632        if (ha->type == GDT_PCIMPR && 
3633            (ha->fw_vers & 0xff) >= 0x1a) {
3634            ha->dvr.size = 0;
3635            ha->dvr.eu.async.ionode = ha->hanum;
3636            ha->dvr.eu.async.status  = ha->status;
3637            /* severity and event_string already set! */
3638        } else {        
3639            ha->dvr.size = sizeof(ha->dvr.eu.async);
3640            ha->dvr.eu.async.ionode   = ha->hanum;
3641            ha->dvr.eu.async.service = ha->service;
3642            ha->dvr.eu.async.status  = ha->status;
3643            ha->dvr.eu.async.info    = ha->info;
3644            *(u32 *)ha->dvr.eu.async.scsi_coord  = ha->info2;
3645        }
3646        gdth_store_event( ha, ES_ASYNC, ha->service, &ha->dvr );
3647        gdth_log_event( &ha->dvr, NULL );
3648    
3649        /* new host drive from expand? */
3650        if (ha->service == CACHESERVICE && ha->status == 56) {
3651            TRACE2(("gdth_async_event(): new host drive %d created\n",
3652                    (u16)ha->info));
3653            /* gdth_analyse_hdrive(hanum, (u16)ha->info); */
3654        }   
3655    }
3656    return 1;
3657}
3658
3659static void gdth_log_event(gdth_evt_data *dvr, char *buffer)
3660{
3661    gdth_stackframe stack;
3662    char *f = NULL;
3663    int i,j;
3664
3665    TRACE2(("gdth_log_event()\n"));
3666    if (dvr->size == 0) {
3667        if (buffer == NULL) {
3668            printk("Adapter %d: %s\n",dvr->eu.async.ionode,dvr->event_string); 
3669        } else {
3670            sprintf(buffer,"Adapter %d: %s\n",
3671                dvr->eu.async.ionode,dvr->event_string); 
3672        }
3673    } else if (dvr->eu.async.service == CACHESERVICE && 
3674        INDEX_OK(dvr->eu.async.status, async_cache_tab)) {
3675        TRACE2(("GDT: Async. event cache service, event no.: %d\n",
3676                dvr->eu.async.status));
3677        
3678        f = async_cache_tab[dvr->eu.async.status];
3679        
3680        /* i: parameter to push, j: stack element to fill */
3681        for (j=0,i=1; i < f[0]; i+=2) {
3682            switch (f[i+1]) {
3683              case 4:
3684                stack.b[j++] = *(u32*)&dvr->eu.stream[(int)f[i]];
3685                break;
3686              case 2:
3687                stack.b[j++] = *(u16*)&dvr->eu.stream[(int)f[i]];
3688                break;
3689              case 1:
3690                stack.b[j++] = *(u8*)&dvr->eu.stream[(int)f[i]];
3691                break;
3692              default:
3693                break;
3694            }
3695        }
3696        
3697        if (buffer == NULL) {
3698            printk(&f[(int)f[0]],stack); 
3699            printk("\n");
3700        } else {
3701            sprintf(buffer,&f[(int)f[0]],stack); 
3702        }
3703
3704    } else {
3705        if (buffer == NULL) {
3706            printk("GDT HA %u, Unknown async. event service %d event no. %d\n",
3707                   dvr->eu.async.ionode,dvr->eu.async.service,dvr->eu.async.status);
3708        } else {
3709            sprintf(buffer,"GDT HA %u, Unknown async. event service %d event no. %d",
3710                    dvr->eu.async.ionode,dvr->eu.async.service,dvr->eu.async.status);
3711        }
3712    }
3713}
3714
3715#ifdef GDTH_STATISTICS
3716static u8       gdth_timer_running;
3717
3718static void gdth_timeout(unsigned long data)
3719{
3720    u32 i;
3721    Scsi_Cmnd *nscp;
3722    gdth_ha_str *ha;
3723    unsigned long flags;
3724
3725    if(unlikely(list_empty(&gdth_instances))) {
3726            gdth_timer_running = 0;
3727            return;
3728    }
3729
3730    ha = list_first_entry(&gdth_instances, gdth_ha_str, list);
3731    spin_lock_irqsave(&ha->smp_lock, flags);
3732
3733    for (act_stats=0,i=0; i<GDTH_MAXCMDS; ++i) 
3734        if (ha->cmd_tab[i].cmnd != UNUSED_CMND)
3735            ++act_stats;
3736
3737    for (act_rq=0,nscp=ha->req_first; nscp; nscp=(Scsi_Cmnd*)nscp->SCp.ptr)
3738        ++act_rq;
3739
3740    TRACE2(("gdth_to(): ints %d, ios %d, act_stats %d, act_rq %d\n",
3741            act_ints, act_ios, act_stats, act_rq));
3742    act_ints = act_ios = 0;
3743
3744    gdth_timer.expires = jiffies + 30 * HZ;
3745    add_timer(&gdth_timer);
3746    spin_unlock_irqrestore(&ha->smp_lock, flags);
3747}
3748
3749static void gdth_timer_init(void)
3750{
3751        if (gdth_timer_running)
3752                return;
3753        gdth_timer_running = 1;
3754        TRACE2(("gdth_detect(): Initializing timer !\n"));
3755        gdth_timer.expires = jiffies + HZ;
3756        gdth_timer.data = 0L;
3757        gdth_timer.function = gdth_timeout;
3758        add_timer(&gdth_timer);
3759}
3760#else
3761static inline void gdth_timer_init(void)
3762{
3763}
3764#endif
3765
3766static void __init internal_setup(char *str,int *ints)
3767{
3768    int i, argc;
3769    char *cur_str, *argv;
3770
3771    TRACE2(("internal_setup() str %s ints[0] %d\n", 
3772            str ? str:"NULL", ints ? ints[0]:0));
3773
3774    /* read irq[] from ints[] */
3775    if (ints) {
3776        argc = ints[0];
3777        if (argc > 0) {
3778            if (argc > MAXHA)
3779                argc = MAXHA;
3780            for (i = 0; i < argc; ++i)
3781                irq[i] = ints[i+1];
3782        }
3783    }
3784
3785    /* analyse string */
3786    argv = str;
3787    while (argv && (cur_str = strchr(argv, ':'))) {
3788        int val = 0, c = *++cur_str;
3789        
3790        if (c == 'n' || c == 'N')
3791            val = 0;
3792        else if (c == 'y' || c == 'Y')
3793            val = 1;
3794        else
3795            val = (int)simple_strtoul(cur_str, NULL, 0);
3796
3797        if (!strncmp(argv, "disable:", 8))
3798            disable = val;
3799        else if (!strncmp(argv, "reserve_mode:", 13))
3800            reserve_mode = val;
3801        else if (!strncmp(argv, "reverse_scan:", 13))
3802            reverse_scan = val;
3803        else if (!strncmp(argv, "hdr_channel:", 12))
3804            hdr_channel = val;
3805        else if (!strncmp(argv, "max_ids:", 8))
3806            max_ids = val;
3807        else if (!strncmp(argv, "rescan:", 7))
3808            rescan = val;
3809        else if (!strncmp(argv, "shared_access:", 14))
3810            shared_access = val;
3811        else if (!strncmp(argv, "probe_eisa_isa:", 15))
3812            probe_eisa_isa = val;
3813        else if (!strncmp(argv, "reserve_list:", 13)) {
3814            reserve_list[0] = val;
3815            for (i = 1; i < MAX_RES_ARGS; i++) {
3816                cur_str = strchr(cur_str, ',');
3817                if (!cur_str)
3818                    break;
3819                if (!isdigit((int)*++cur_str)) {
3820                    --cur_str;          
3821                    break;
3822                }
3823                reserve_list[i] = 
3824                    (int)simple_strtoul(cur_str, NULL, 0);
3825            }
3826            if (!cur_str)
3827                break;
3828            argv = ++cur_str;
3829            continue;
3830        }
3831
3832        if ((argv = strchr(argv, ',')))
3833            ++argv;
3834    }
3835}
3836
3837int __init option_setup(char *str)
3838{
3839    int ints[MAXHA];
3840    char *cur = str;
3841    int i = 1;
3842
3843    TRACE2(("option_setup() str %s\n", str ? str:"NULL")); 
3844
3845    while (cur && isdigit(*cur) && i < MAXHA) {
3846        ints[i++] = simple_strtoul(cur, NULL, 0);
3847        if ((cur = strchr(cur, ',')) != NULL) cur++;
3848    }
3849
3850    ints[0] = i - 1;
3851    internal_setup(cur, ints);
3852    return 1;
3853}
3854
3855static const char *gdth_ctr_name(gdth_ha_str *ha)
3856{
3857    TRACE2(("gdth_ctr_name()\n"));
3858
3859    if (ha->type == GDT_EISA) {
3860        switch (ha->stype) {
3861          case GDT3_ID:
3862            return("GDT3000/3020");
3863          case GDT3A_ID:
3864            return("GDT3000A/3020A/3050A");
3865          case GDT3B_ID:
3866            return("GDT3000B/3010A");
3867        }
3868    } else if (ha->type == GDT_ISA) {
3869        return("GDT2000/2020");
3870    } else if (ha->type == GDT_PCI) {
3871        switch (ha->pdev->device) {
3872          case PCI_DEVICE_ID_VORTEX_GDT60x0:
3873            return("GDT6000/6020/6050");
3874          case PCI_DEVICE_ID_VORTEX_GDT6000B:
3875            return("GDT6000B/6010");
3876        }
3877    } 
3878    /* new controllers (GDT_PCINEW, GDT_PCIMPR, ..) use board_info IOCTL! */
3879
3880    return("");
3881}
3882
3883static const char *gdth_info(struct Scsi_Host *shp)
3884{
3885    gdth_ha_str *ha = shost_priv(shp);
3886
3887    TRACE2(("gdth_info()\n"));
3888    return ((const char *)ha->binfo.type_string);
3889}
3890
3891static enum blk_eh_timer_return gdth_timed_out(struct scsi_cmnd *scp)
3892{
3893        gdth_ha_str *ha = shost_priv(scp->device->host);
3894        struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
3895        u8 b, t;
3896        unsigned long flags;
3897        enum blk_eh_timer_return retval = BLK_EH_NOT_HANDLED;
3898
3899        TRACE(("%s() cmd 0x%x\n", scp->cmnd[0], __func__));
3900        b = scp->device->channel;
3901        t = scp->device->id;
3902
3903        /*
3904         * We don't really honor the command timeout, but we try to
3905         * honor 6 times of the actual command timeout! So reset the
3906         * timer if this is less than 6th timeout on this command!
3907         */
3908        if (++cmndinfo->timeout_count < 6)
3909                retval = BLK_EH_RESET_TIMER;
3910
3911        /* Reset the timeout if it is locked IO */
3912        spin_lock_irqsave(&ha->smp_lock, flags);
3913        if ((b != ha->virt_bus && ha->raw[BUS_L2P(ha, b)].lock) ||
3914            (b == ha->virt_bus && t < MAX_HDRIVES && ha->hdr[t].lock)) {
3915                TRACE2(("%s(): locked IO, reset timeout\n", __func__));
3916                retval = BLK_EH_RESET_TIMER;
3917        }
3918        spin_unlock_irqrestore(&ha->smp_lock, flags);
3919
3920        return retval;
3921}
3922
3923
3924static int gdth_eh_bus_reset(Scsi_Cmnd *scp)
3925{
3926    gdth_ha_str *ha = shost_priv(scp->device->host);
3927    int i;
3928    unsigned long flags;
3929    Scsi_Cmnd *cmnd;
3930    u8 b;
3931
3932    TRACE2(("gdth_eh_bus_reset()\n"));
3933
3934    b = scp->device->channel;
3935
3936    /* clear command tab */
3937    spin_lock_irqsave(&ha->smp_lock, flags);
3938    for (i = 0; i < GDTH_MAXCMDS; ++i) {
3939        cmnd = ha->cmd_tab[i].cmnd;
3940        if (!SPECIAL_SCP(cmnd) && cmnd->device->channel == b)
3941            ha->cmd_tab[i].cmnd = UNUSED_CMND;
3942    }
3943    spin_unlock_irqrestore(&ha->smp_lock, flags);
3944
3945    if (b == ha->virt_bus) {
3946        /* host drives */
3947        for (i = 0; i < MAX_HDRIVES; ++i) {
3948            if (ha->hdr[i].present) {
3949                spin_lock_irqsave(&ha->smp_lock, flags);
3950                gdth_polling = TRUE;
3951                while (gdth_test_busy(ha))
3952                    gdth_delay(0);
3953                if (gdth_internal_cmd(ha, CACHESERVICE,
3954                                      GDT_CLUST_RESET, i, 0, 0))
3955                    ha->hdr[i].cluster_type &= ~CLUSTER_RESERVED;
3956                gdth_polling = FALSE;
3957                spin_unlock_irqrestore(&ha->smp_lock, flags);
3958            }
3959        }
3960    } else {
3961        /* raw devices */
3962        spin_lock_irqsave(&ha->smp_lock, flags);
3963        for (i = 0; i < MAXID; ++i)
3964            ha->raw[BUS_L2P(ha,b)].io_cnt[i] = 0;
3965        gdth_polling = TRUE;
3966        while (gdth_test_busy(ha))
3967            gdth_delay(0);
3968        gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_RESET_BUS,
3969                          BUS_L2P(ha,b), 0, 0);
3970        gdth_polling = FALSE;
3971        spin_unlock_irqrestore(&ha->smp_lock, flags);
3972    }
3973    return SUCCESS;
3974}
3975
3976static int gdth_bios_param(struct scsi_device *sdev,struct block_device *bdev,sector_t cap,int *ip)
3977{
3978    u8 b, t;
3979    gdth_ha_str *ha = shost_priv(sdev->host);
3980    struct scsi_device *sd;
3981    unsigned capacity;
3982
3983    sd = sdev;
3984    capacity = cap;
3985    b = sd->channel;
3986    t = sd->id;
3987    TRACE2(("gdth_bios_param() ha %d bus %d target %d\n", ha->hanum, b, t));
3988
3989    if (b != ha->virt_bus || ha->hdr[t].heads == 0) {
3990        /* raw device or host drive without mapping information */
3991        TRACE2(("Evaluate mapping\n"));
3992        gdth_eval_mapping(capacity,&ip[2],&ip[0],&ip[1]);
3993    } else {
3994        ip[0] = ha->hdr[t].heads;
3995        ip[1] = ha->hdr[t].secs;
3996        ip[2] = capacity / ip[0] / ip[1];
3997    }
3998
3999    TRACE2(("gdth_bios_param(): %d heads, %d secs, %d cyls\n",
4000            ip[0],ip[1],ip[2]));
4001    return 0;
4002}
4003
4004
4005static int gdth_queuecommand(struct scsi_cmnd *scp,
4006                                void (*done)(struct scsi_cmnd *))
4007{
4008    gdth_ha_str *ha = shost_priv(scp->device->host);
4009    struct gdth_cmndinfo *cmndinfo;
4010
4011    TRACE(("gdth_queuecommand() cmd 0x%x\n", scp->cmnd[0]));
4012
4013    cmndinfo = gdth_get_cmndinfo(ha);
4014    BUG_ON(!cmndinfo);
4015
4016    scp->scsi_done = done;
4017    cmndinfo->timeout_count = 0;
4018    cmndinfo->priority = DEFAULT_PRI;
4019
4020    return __gdth_queuecommand(ha, scp, cmndinfo);
4021}
4022
4023static int __gdth_queuecommand(gdth_ha_str *ha, struct scsi_cmnd *scp,
4024                                struct gdth_cmndinfo *cmndinfo)
4025{
4026    scp->host_scribble = (unsigned char *)cmndinfo;
4027    cmndinfo->wait_for_completion = 1;
4028    cmndinfo->phase = -1;
4029    cmndinfo->OpCode = -1;
4030
4031#ifdef GDTH_STATISTICS
4032    ++act_ios;
4033#endif
4034
4035    gdth_putq(ha, scp, cmndinfo->priority);
4036    gdth_next(ha);
4037    return 0;
4038}
4039
4040
4041static int gdth_open(struct inode *inode, struct file *filep)
4042{
4043    gdth_ha_str *ha;
4044
4045    lock_kernel();
4046    list_for_each_entry(ha, &gdth_instances, list) {
4047        if (!ha->sdev)
4048            ha->sdev = scsi_get_host_dev(ha->shost);
4049    }
4050    unlock_kernel();
4051
4052    TRACE(("gdth_open()\n"));
4053    return 0;
4054}
4055
4056static int gdth_close(struct inode *inode, struct file *filep)
4057{
4058    TRACE(("gdth_close()\n"));
4059    return 0;
4060}
4061
4062static int ioc_event(void __user *arg)
4063{
4064    gdth_ioctl_event evt;
4065    gdth_ha_str *ha;
4066    unsigned long flags;
4067
4068    if (copy_from_user(&evt, arg, sizeof(gdth_ioctl_event)))
4069        return -EFAULT;
4070    ha = gdth_find_ha(evt.ionode);
4071    if (!ha)
4072        return -EFAULT;
4073
4074    if (evt.erase == 0xff) {
4075        if (evt.event.event_source == ES_TEST)
4076            evt.event.event_data.size=sizeof(evt.event.event_data.eu.test); 
4077        else if (evt.event.event_source == ES_DRIVER)
4078            evt.event.event_data.size=sizeof(evt.event.event_data.eu.driver); 
4079        else if (evt.event.event_source == ES_SYNC)
4080            evt.event.event_data.size=sizeof(evt.event.event_data.eu.sync); 
4081        else
4082            evt.event.event_data.size=sizeof(evt.event.event_data.eu.async);
4083        spin_lock_irqsave(&ha->smp_lock, flags);
4084        gdth_store_event(ha, evt.event.event_source, evt.event.event_idx,
4085                         &evt.event.event_data);
4086        spin_unlock_irqrestore(&ha->smp_lock, flags);
4087    } else if (evt.erase == 0xfe) {
4088        gdth_clear_events();
4089    } else if (evt.erase == 0) {
4090        evt.handle = gdth_read_event(ha, evt.handle, &evt.event);
4091    } else {
4092        gdth_readapp_event(ha, evt.erase, &evt.event);
4093    }     
4094    if (copy_to_user(arg, &evt, sizeof(gdth_ioctl_event)))
4095        return -EFAULT;
4096    return 0;
4097}
4098
4099static int ioc_lockdrv(void __user *arg)
4100{
4101    gdth_ioctl_lockdrv ldrv;
4102    u8 i, j;
4103    unsigned long flags;
4104    gdth_ha_str *ha;
4105
4106    if (copy_from_user(&ldrv, arg, sizeof(gdth_ioctl_lockdrv)))
4107        return -EFAULT;
4108    ha = gdth_find_ha(ldrv.ionode);
4109    if (!ha)
4110        return -EFAULT;
4111
4112    for (i = 0; i < ldrv.drive_cnt && i < MAX_HDRIVES; ++i) {
4113        j = ldrv.drives[i];
4114        if (j >= MAX_HDRIVES || !ha->hdr[j].present)
4115            continue;
4116        if (ldrv.lock) {
4117            spin_lock_irqsave(&ha->smp_lock, flags);
4118            ha->hdr[j].lock = 1;
4119            spin_unlock_irqrestore(&ha->smp_lock, flags);
4120            gdth_wait_completion(ha, ha->bus_cnt, j);
4121        } else {
4122            spin_lock_irqsave(&ha->smp_lock, flags);
4123            ha->hdr[j].lock = 0;
4124            spin_unlock_irqrestore(&ha->smp_lock, flags);
4125            gdth_next(ha);
4126        }
4127    } 
4128    return 0;
4129}
4130
4131static int ioc_resetdrv(void __user *arg, char *cmnd)
4132{
4133    gdth_ioctl_reset res;
4134    gdth_cmd_str cmd;
4135    gdth_ha_str *ha;
4136    int rval;
4137
4138    if (copy_from_user(&res, arg, sizeof(gdth_ioctl_reset)) ||
4139        res.number >= MAX_HDRIVES)
4140        return -EFAULT;
4141    ha = gdth_find_ha(res.ionode);
4142    if (!ha)
4143        return -EFAULT;
4144
4145    if (!ha->hdr[res.number].present)
4146        return 0;
4147    memset(&cmd, 0, sizeof(gdth_cmd_str));
4148    cmd.Service = CACHESERVICE;
4149    cmd.OpCode = GDT_CLUST_RESET;
4150    if (ha->cache_feat & GDT_64BIT)
4151        cmd.u.cache64.DeviceNo = res.number;
4152    else
4153        cmd.u.cache.DeviceNo = res.number;
4154
4155    rval = __gdth_execute(ha->sdev, &cmd, cmnd, 30, NULL);
4156    if (rval < 0)
4157        return rval;
4158    res.status = rval;
4159
4160    if (copy_to_user(arg, &res, sizeof(gdth_ioctl_reset)))
4161        return -EFAULT;
4162    return 0;
4163}
4164
4165static int ioc_general(void __user *arg, char *cmnd)
4166{
4167    gdth_ioctl_general gen;
4168    char *buf = NULL;
4169    u64 paddr; 
4170    gdth_ha_str *ha;
4171    int rval;
4172
4173    if (copy_from_user(&gen, arg, sizeof(gdth_ioctl_general)))
4174        return -EFAULT;
4175    ha = gdth_find_ha(gen.ionode);
4176    if (!ha)
4177        return -EFAULT;
4178    if (gen.data_len + gen.sense_len != 0) {
4179        if (!(buf = gdth_ioctl_alloc(ha, gen.data_len + gen.sense_len,
4180                                     FALSE, &paddr)))
4181            return -EFAULT;
4182        if (copy_from_user(buf, arg + sizeof(gdth_ioctl_general),  
4183                           gen.data_len + gen.sense_len)) {
4184            gdth_ioctl_free(ha, gen.data_len+gen.sense_len, buf, paddr);
4185            return -EFAULT;
4186        }
4187
4188        if (gen.command.OpCode == GDT_IOCTL) {
4189            gen.command.u.ioctl.p_param = paddr;
4190        } else if (gen.command.Service == CACHESERVICE) {
4191            if (ha->cache_feat & GDT_64BIT) {
4192                /* copy elements from 32-bit IOCTL structure */
4193                gen.command.u.cache64.BlockCnt = gen.command.u.cache.BlockCnt;
4194                gen.command.u.cache64.BlockNo = gen.command.u.cache.BlockNo;
4195                gen.command.u.cache64.DeviceNo = gen.command.u.cache.DeviceNo;
4196                /* addresses */
4197                if (ha->cache_feat & SCATTER_GATHER) {
4198                    gen.command.u.cache64.DestAddr = (u64)-1;
4199                    gen.command.u.cache64.sg_canz = 1;
4200                    gen.command.u.cache64.sg_lst[0].sg_ptr = paddr;
4201                    gen.command.u.cache64.sg_lst[0].sg_len = gen.data_len;
4202                    gen.command.u.cache64.sg_lst[1].sg_len = 0;
4203                } else {
4204                    gen.command.u.cache64.DestAddr = paddr;
4205                    gen.command.u.cache64.sg_canz = 0;
4206                }
4207            } else {
4208                if (ha->cache_feat & SCATTER_GATHER) {
4209                    gen.command.u.cache.DestAddr = 0xffffffff;
4210                    gen.command.u.cache.sg_canz = 1;
4211                    gen.command.u.cache.sg_lst[0].sg_ptr = (u32)paddr;
4212                    gen.command.u.cache.sg_lst[0].sg_len = gen.data_len;
4213                    gen.command.u.cache.sg_lst[1].sg_len = 0;
4214                } else {
4215                    gen.command.u.cache.DestAddr = paddr;
4216                    gen.command.u.cache.sg_canz = 0;
4217                }
4218            }
4219        } else if (gen.command.Service == SCSIRAWSERVICE) {
4220            if (ha->raw_feat & GDT_64BIT) {
4221                /* copy elements from 32-bit IOCTL structure */
4222                char cmd[16];
4223                gen.command.u.raw64.sense_len = gen.command.u.raw.sense_len;
4224                gen.command.u.raw64.bus = gen.command.u.raw.bus;
4225                gen.command.u.raw64.lun = gen.command.u.raw.lun;
4226                gen.command.u.raw64.target = gen.command.u.raw.target;
4227                memcpy(cmd, gen.command.u.raw.cmd, 16);
4228                memcpy(gen.command.u.raw64.cmd, cmd, 16);
4229                gen.command.u.raw64.clen = gen.command.u.raw.clen;
4230                gen.command.u.raw64.sdlen = gen.command.u.raw.sdlen;
4231                gen.command.u.raw64.direction = gen.command.u.raw.direction;
4232                /* addresses */
4233                if (ha->raw_feat & SCATTER_GATHER) {
4234                    gen.command.u.raw64.sdata = (u64)-1;
4235                    gen.command.u.raw64.sg_ranz = 1;
4236                    gen.command.u.raw64.sg_lst[0].sg_ptr = paddr;
4237                    gen.command.u.raw64.sg_lst[0].sg_len = gen.data_len;
4238                    gen.command.u.raw64.sg_lst[1].sg_len = 0;
4239                } else {
4240                    gen.command.u.raw64.sdata = paddr;
4241                    gen.command.u.raw64.sg_ranz = 0;
4242                }
4243                gen.command.u.raw64.sense_data = paddr + gen.data_len;
4244            } else {
4245                if (ha->raw_feat & SCATTER_GATHER) {
4246                    gen.command.u.raw.sdata = 0xffffffff;
4247                    gen.command.u.raw.sg_ranz = 1;
4248                    gen.command.u.raw.sg_lst[0].sg_ptr = (u32)paddr;
4249                    gen.command.u.raw.sg_lst[0].sg_len = gen.data_len;
4250                    gen.command.u.raw.sg_lst[1].sg_len = 0;
4251                } else {
4252                    gen.command.u.raw.sdata = paddr;
4253                    gen.command.u.raw.sg_ranz = 0;
4254                }
4255                gen.command.u.raw.sense_data = (u32)paddr + gen.data_len;
4256            }
4257        } else {
4258            gdth_ioctl_free(ha, gen.data_len+gen.sense_len, buf, paddr);
4259            return -EFAULT;
4260        }
4261    }
4262
4263    rval = __gdth_execute(ha->sdev, &gen.command, cmnd, gen.timeout, &gen.info);
4264    if (rval < 0)
4265        return rval;
4266    gen.status = rval;
4267
4268    if (copy_to_user(arg + sizeof(gdth_ioctl_general), buf, 
4269                     gen.data_len + gen.sense_len)) {
4270        gdth_ioctl_free(ha, gen.data_len+gen.sense_len, buf, paddr);
4271        return -EFAULT; 
4272    } 
4273    if (copy_to_user(arg, &gen, 
4274        sizeof(gdth_ioctl_general) - sizeof(gdth_cmd_str))) {
4275        gdth_ioctl_free(ha, gen.data_len+gen.sense_len, buf, paddr);
4276        return -EFAULT;
4277    }
4278    gdth_ioctl_free(ha, gen.data_len+gen.sense_len, buf, paddr);
4279    return 0;
4280}
4281 
4282static int ioc_hdrlist(void __user *arg, char *cmnd)
4283{
4284    gdth_ioctl_rescan *rsc;
4285    gdth_cmd_str *cmd;
4286    gdth_ha_str *ha;
4287    u8 i;
4288    int rc = -ENOMEM;
4289    u32 cluster_type = 0;
4290
4291    rsc = kmalloc(sizeof(*rsc), GFP_KERNEL);
4292    cmd = kmalloc(sizeof(*cmd), GFP_KERNEL);
4293    if (!rsc || !cmd)
4294        goto free_fail;
4295
4296    if (copy_from_user(rsc, arg, sizeof(gdth_ioctl_rescan)) ||
4297        (NULL == (ha = gdth_find_ha(rsc->ionode)))) {
4298        rc = -EFAULT;
4299        goto free_fail;
4300    }
4301    memset(cmd, 0, sizeof(gdth_cmd_str));
4302   
4303    for (i = 0; i < MAX_HDRIVES; ++i) { 
4304        if (!ha->hdr[i].present) {
4305            rsc->hdr_list[i].bus = 0xff; 
4306            continue;
4307        } 
4308        rsc->hdr_list[i].bus = ha->virt_bus;
4309        rsc->hdr_list[i].target = i;
4310        rsc->hdr_list[i].lun = 0;
4311        rsc->hdr_list[i].cluster_type = ha->hdr[i].cluster_type;
4312        if (ha->hdr[i].cluster_type & CLUSTER_DRIVE) { 
4313            cmd->Service = CACHESERVICE;
4314            cmd->OpCode = GDT_CLUST_INFO;
4315            if (ha->cache_feat & GDT_64BIT)
4316                cmd->u.cache64.DeviceNo = i;
4317            else
4318                cmd->u.cache.DeviceNo = i;
4319            if (__gdth_execute(ha->sdev, cmd, cmnd, 30, &cluster_type) == S_OK)
4320                rsc->hdr_list[i].cluster_type = cluster_type;
4321        }
4322    } 
4323
4324    if (copy_to_user(arg, rsc, sizeof(gdth_ioctl_rescan)))
4325        rc = -EFAULT;
4326    else
4327        rc = 0;
4328
4329free_fail:
4330    kfree(rsc);
4331    kfree(cmd);
4332    return rc;
4333}
4334
4335static int ioc_rescan(void __user *arg, char *cmnd)
4336{
4337    gdth_ioctl_rescan *rsc;
4338    gdth_cmd_str *cmd;
4339    u16 i, status, hdr_cnt;
4340    u32 info;
4341    int cyls, hds, secs;
4342    int rc = -ENOMEM;
4343    unsigned long flags;
4344    gdth_ha_str *ha; 
4345
4346    rsc = kmalloc(sizeof(*rsc), GFP_KERNEL);
4347    cmd = kmalloc(sizeof(*cmd), GFP_KERNEL);
4348    if (!cmd || !rsc)
4349        goto free_fail;
4350
4351    if (copy_from_user(rsc, arg, sizeof(gdth_ioctl_rescan)) ||
4352        (NULL == (ha = gdth_find_ha(rsc->ionode)))) {
4353        rc = -EFAULT;
4354        goto free_fail;
4355    }
4356    memset(cmd, 0, sizeof(gdth_cmd_str));
4357
4358    if (rsc->flag == 0) {
4359        /* old method: re-init. cache service */
4360        cmd->Service = CACHESERVICE;
4361        if (ha->cache_feat & GDT_64BIT) {
4362            cmd->OpCode = GDT_X_INIT_HOST;
4363            cmd->u.cache64.DeviceNo = LINUX_OS;
4364        } else {
4365            cmd->OpCode = GDT_INIT;
4366            cmd->u.cache.DeviceNo = LINUX_OS;
4367        }
4368
4369        status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info);
4370        i = 0;
4371        hdr_cnt = (status == S_OK ? (u16)info : 0);
4372    } else {
4373        i = rsc->hdr_no;
4374        hdr_cnt = i + 1;
4375    }
4376
4377    for (; i < hdr_cnt && i < MAX_HDRIVES; ++i) {
4378        cmd->Service = CACHESERVICE;
4379        cmd->OpCode = GDT_INFO;
4380        if (ha->cache_feat & GDT_64BIT) 
4381            cmd->u.cache64.DeviceNo = i;
4382        else 
4383            cmd->u.cache.DeviceNo = i;
4384
4385        status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info);
4386
4387        spin_lock_irqsave(&ha->smp_lock, flags);
4388        rsc->hdr_list[i].bus = ha->virt_bus;
4389        rsc->hdr_list[i].target = i;
4390        rsc->hdr_list[i].lun = 0;
4391        if (status != S_OK) {
4392            ha->hdr[i].present = FALSE;
4393        } else {
4394            ha->hdr[i].present = TRUE;
4395            ha->hdr[i].size = info;
4396            /* evaluate mapping */
4397            ha->hdr[i].size &= ~SECS32;
4398            gdth_eval_mapping(ha->hdr[i].size,&cyls,&hds,&secs); 
4399            ha->hdr[i].heads = hds;
4400            ha->hdr[i].secs = secs;
4401            /* round size */
4402            ha->hdr[i].size = cyls * hds * secs;
4403        }
4404        spin_unlock_irqrestore(&ha->smp_lock, flags);
4405        if (status != S_OK)
4406            continue; 
4407        
4408        /* extended info, if GDT_64BIT, for drives > 2 TB */
4409        /* but we need ha->info2, not yet stored in scp->SCp */
4410
4411        /* devtype, cluster info, R/W attribs */
4412        cmd->Service = CACHESERVICE;
4413        cmd->OpCode = GDT_DEVTYPE;
4414        if (ha->cache_feat & GDT_64BIT) 
4415            cmd->u.cache64.DeviceNo = i;
4416        else
4417            cmd->u.cache.DeviceNo = i;
4418
4419        status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info);
4420
4421        spin_lock_irqsave(&ha->smp_lock, flags);
4422        ha->hdr[i].devtype = (status == S_OK ? (u16)info : 0);
4423        spin_unlock_irqrestore(&ha->smp_lock, flags);
4424
4425        cmd->Service = CACHESERVICE;
4426        cmd->OpCode = GDT_CLUST_INFO;
4427        if (ha->cache_feat & GDT_64BIT) 
4428            cmd->u.cache64.DeviceNo = i;
4429        else
4430            cmd->u.cache.DeviceNo = i;
4431
4432        status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info);
4433
4434        spin_lock_irqsave(&ha->smp_lock, flags);
4435        ha->hdr[i].cluster_type = 
4436            ((status == S_OK && !shared_access) ? (u16)info : 0);
4437        spin_unlock_irqrestore(&ha->smp_lock, flags);
4438        rsc->hdr_list[i].cluster_type = ha->hdr[i].cluster_type;
4439
4440        cmd->Service = CACHESERVICE;
4441        cmd->OpCode = GDT_RW_ATTRIBS;
4442        if (ha->cache_feat & GDT_64BIT) 
4443            cmd->u.cache64.DeviceNo = i;
4444        else
4445            cmd->u.cache.DeviceNo = i;
4446
4447        status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info);
4448
4449        spin_lock_irqsave(&ha->smp_lock, flags);
4450        ha->hdr[i].rw_attribs = (status == S_OK ? (u16)info : 0);
4451        spin_unlock_irqrestore(&ha->smp_lock, flags);
4452    }
4453 
4454    if (copy_to_user(arg, rsc, sizeof(gdth_ioctl_rescan)))
4455        rc = -EFAULT;
4456    else
4457        rc = 0;
4458
4459free_fail:
4460    kfree(rsc);
4461    kfree(cmd);
4462    return rc;
4463}
4464  
4465static int gdth_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
4466{
4467    gdth_ha_str *ha; 
4468    Scsi_Cmnd *scp;
4469    unsigned long flags;
4470    char cmnd[MAX_COMMAND_SIZE];   
4471    void __user *argp = (void __user *)arg;
4472
4473    memset(cmnd, 0xff, 12);
4474    
4475    TRACE(("gdth_ioctl() cmd 0x%x\n", cmd));
4476 
4477    switch (cmd) {
4478      case GDTIOCTL_CTRCNT:
4479      { 
4480        int cnt = gdth_ctr_count;
4481        if (put_user(cnt, (int __user *)argp))
4482                return -EFAULT;
4483        break;
4484      }
4485
4486      case GDTIOCTL_DRVERS:
4487      { 
4488        int ver = (GDTH_VERSION<<8) | GDTH_SUBVERSION;
4489        if (put_user(ver, (int __user *)argp))
4490                return -EFAULT;
4491        break;
4492      }
4493      
4494      case GDTIOCTL_OSVERS:
4495      { 
4496        gdth_ioctl_osvers osv; 
4497
4498        osv.version = (u8)(LINUX_VERSION_CODE >> 16);
4499        osv.subversion = (u8)(LINUX_VERSION_CODE >> 8);
4500        osv.revision = (u16)(LINUX_VERSION_CODE & 0xff);
4501        if (copy_to_user(argp, &osv, sizeof(gdth_ioctl_osvers)))
4502                return -EFAULT;
4503        break;
4504      }
4505
4506      case GDTIOCTL_CTRTYPE:
4507      { 
4508        gdth_ioctl_ctrtype ctrt;
4509        
4510        if (copy_from_user(&ctrt, argp, sizeof(gdth_ioctl_ctrtype)) ||
4511            (NULL == (ha = gdth_find_ha(ctrt.ionode))))
4512            return -EFAULT;
4513
4514        if (ha->type == GDT_ISA || ha->type == GDT_EISA) {
4515            ctrt.type = (u8)((ha->stype>>20) - 0x10);
4516        } else {
4517            if (ha->type != GDT_PCIMPR) {
4518                ctrt.type = (u8)((ha->stype<<4) + 6);
4519            } else {
4520                ctrt.type = 
4521                    (ha->oem_id == OEM_ID_INTEL ? 0xfd : 0xfe);
4522                if (ha->stype >= 0x300)
4523                    ctrt.ext_type = 0x6000 | ha->pdev->subsystem_device;
4524                else 
4525                    ctrt.ext_type = 0x6000 | ha->stype;
4526            }
4527            ctrt.device_id = ha->pdev->device;
4528            ctrt.sub_device_id = ha->pdev->subsystem_device;
4529        }
4530        ctrt.info = ha->brd_phys;
4531        ctrt.oem_id = ha->oem_id;
4532        if (copy_to_user(argp, &ctrt, sizeof(gdth_ioctl_ctrtype)))
4533            return -EFAULT;
4534        break;
4535      }
4536        
4537      case GDTIOCTL_GENERAL:
4538        return ioc_general(argp, cmnd);
4539
4540      case GDTIOCTL_EVENT:
4541        return ioc_event(argp);
4542
4543      case GDTIOCTL_LOCKDRV:
4544        return ioc_lockdrv(argp);
4545
4546      case GDTIOCTL_LOCKCHN:
4547      {
4548        gdth_ioctl_lockchn lchn;
4549        u8 i, j;
4550
4551        if (copy_from_user(&lchn, argp, sizeof(gdth_ioctl_lockchn)) ||
4552            (NULL == (ha = gdth_find_ha(lchn.ionode))))
4553            return -EFAULT;
4554
4555        i = lchn.channel;
4556        if (i < ha->bus_cnt) {
4557            if (lchn.lock) {
4558                spin_lock_irqsave(&ha->smp_lock, flags);
4559                ha->raw[i].lock = 1;
4560                spin_unlock_irqrestore(&ha->smp_lock, flags);
4561                for (j = 0; j < ha->tid_cnt; ++j)
4562                    gdth_wait_completion(ha, i, j);
4563            } else {
4564                spin_lock_irqsave(&ha->smp_lock, flags);
4565                ha->raw[i].lock = 0;
4566                spin_unlock_irqrestore(&ha->smp_lock, flags);
4567                for (j = 0; j < ha->tid_cnt; ++j)
4568                    gdth_next(ha);
4569            }
4570        } 
4571        break;
4572      }
4573
4574      case GDTIOCTL_RESCAN:
4575        return ioc_rescan(argp, cmnd);
4576
4577      case GDTIOCTL_HDRLIST:
4578        return ioc_hdrlist(argp, cmnd);
4579
4580      case GDTIOCTL_RESET_BUS:
4581      {
4582        gdth_ioctl_reset res;
4583        int rval;
4584
4585        if (copy_from_user(&res, argp, sizeof(gdth_ioctl_reset)) ||
4586            (NULL == (ha = gdth_find_ha(res.ionode))))
4587            return -EFAULT;
4588
4589        scp  = kzalloc(sizeof(*scp), GFP_KERNEL);
4590        if (!scp)
4591            return -ENOMEM;
4592        scp->device = ha->sdev;
4593        scp->cmd_len = 12;
4594        scp->device->channel = res.number;
4595        rval = gdth_eh_bus_reset(scp);
4596        res.status = (rval == SUCCESS ? S_OK : S_GENERR);
4597        kfree(scp);
4598
4599        if (copy_to_user(argp, &res, sizeof(gdth_ioctl_reset)))
4600            return -EFAULT;
4601        break;
4602      }
4603
4604      case GDTIOCTL_RESET_DRV:
4605        return ioc_resetdrv(argp, cmnd);
4606
4607      default:
4608        break; 
4609    }
4610    return 0;
4611}
4612
4613static long gdth_unlocked_ioctl(struct file *file, unsigned int cmd,
4614                                unsigned long arg)
4615{
4616        int ret;
4617
4618        lock_kernel();
4619        ret = gdth_ioctl(file, cmd, arg);
4620        unlock_kernel();
4621
4622        return ret;
4623}
4624
4625/* flush routine */
4626static void gdth_flush(gdth_ha_str *ha)
4627{
4628    int             i;
4629    gdth_cmd_str    gdtcmd;
4630    char            cmnd[MAX_COMMAND_SIZE];   
4631    memset(cmnd, 0xff, MAX_COMMAND_SIZE);
4632
4633    TRACE2(("gdth_flush() hanum %d\n", ha->hanum));
4634
4635    for (i = 0; i < MAX_HDRIVES; ++i) {
4636        if (ha->hdr[i].present) {
4637            gdtcmd.BoardNode = LOCALBOARD;
4638            gdtcmd.Service = CACHESERVICE;
4639            gdtcmd.OpCode = GDT_FLUSH;
4640            if (ha->cache_feat & GDT_64BIT) { 
4641                gdtcmd.u.cache64.DeviceNo = i;
4642                gdtcmd.u.cache64.BlockNo = 1;
4643                gdtcmd.u.cache64.sg_canz = 0;
4644            } else {
4645                gdtcmd.u.cache.DeviceNo = i;
4646                gdtcmd.u.cache.BlockNo = 1;
4647                gdtcmd.u.cache.sg_canz = 0;
4648            }
4649            TRACE2(("gdth_flush(): flush ha %d drive %d\n", ha->hanum, i));
4650
4651            gdth_execute(ha->shost, &gdtcmd, cmnd, 30, NULL);
4652        }
4653    }
4654}
4655
4656/* configure lun */
4657static int gdth_slave_configure(struct scsi_device *sdev)
4658{
4659    scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
4660    sdev->skip_ms_page_3f = 1;
4661    sdev->skip_ms_page_8 = 1;
4662    return 0;
4663}
4664
4665static struct scsi_host_template gdth_template = {
4666        .name                   = "GDT SCSI Disk Array Controller",
4667        .info                   = gdth_info, 
4668        .queuecommand           = gdth_queuecommand,
4669        .eh_bus_reset_handler   = gdth_eh_bus_reset,
4670        .slave_configure        = gdth_slave_configure,
4671        .bios_param             = gdth_bios_param,
4672        .proc_info              = gdth_proc_info,
4673        .eh_timed_out           = gdth_timed_out,
4674        .proc_name              = "gdth",
4675        .can_queue              = GDTH_MAXCMDS,
4676        .this_id                = -1,
4677        .sg_tablesize           = GDTH_MAXSG,
4678        .cmd_per_lun            = GDTH_MAXC_P_L,
4679        .unchecked_isa_dma      = 1,
4680        .use_clustering         = ENABLE_CLUSTERING,
4681};
4682
4683#ifdef CONFIG_ISA
4684static int __init gdth_isa_probe_one(u32 isa_bios)
4685{
4686        struct Scsi_Host *shp;
4687        gdth_ha_str *ha;
4688        dma_addr_t scratch_dma_handle = 0;