gdth.c 177.3 KB
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/************************************************************************
 * Linux driver for                                                     *  
 * ICP vortex GmbH:    GDT ISA/EISA/PCI Disk Array Controllers          *
 * Intel Corporation:  Storage RAID Controllers                         *
 *                                                                      *
 * gdth.c                                                               *
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 * Copyright (C) 1995-06 ICP vortex GmbH, Achim Leubner                 *
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 * Copyright (C) 2002-04 Intel Corporation                              *
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 * Copyright (C) 2003-06 Adaptec Inc.                                   *
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 * <achim_leubner@adaptec.com>                                          *
 *                                                                      *
 * Additions/Fixes:                                                     *
 * Boji Tony Kannanthanam <boji.t.kannanthanam@intel.com>               *
 * Johannes Dinner <johannes_dinner@adaptec.com>                        *
 *                                                                      *
 * This program is free software; you can redistribute it and/or modify *
 * it under the terms of the GNU General Public License as published    *
 * by the Free Software Foundation; either version 2 of the License,    *
 * or (at your option) any later version.                               *
 *                                                                      *
 * This program is distributed in the hope that it will be useful,      *
 * but WITHOUT ANY WARRANTY; without even the implied warranty of       *
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the         *
 * GNU General Public License for more details.                         *
 *                                                                      *
 * You should have received a copy of the GNU General Public License    *
 * along with this kernel; if not, write to the Free Software           *
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.            *
 *                                                                      *
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 * Linux kernel 2.6.x supported						*
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 *                                                                      *
 ************************************************************************/

/* All GDT Disk Array Controllers are fully supported by this driver.
 * This includes the PCI/EISA/ISA SCSI Disk Array Controllers and the
 * PCI Fibre Channel Disk Array Controllers. See gdth.h for a complete
 * list of all controller types.
 * 
 * If you have one or more GDT3000/3020 EISA controllers with 
 * controller BIOS disabled, you have to set the IRQ values with the 
 * command line option "gdth=irq1,irq2,...", where the irq1,irq2,... are
 * the IRQ values for the EISA controllers.
 * 
 * After the optional list of IRQ values, other possible 
 * command line options are:
 * disable:Y                    disable driver
 * disable:N                    enable driver
 * reserve_mode:0               reserve no drives for the raw service
 * reserve_mode:1               reserve all not init., removable drives
 * reserve_mode:2               reserve all not init. drives
 * reserve_list:h,b,t,l,h,b,t,l,...     reserve particular drive(s) with 
 *                              h- controller no., b- channel no., 
 *                              t- target ID, l- LUN
 * reverse_scan:Y               reverse scan order for PCI controllers         
 * reverse_scan:N               scan PCI controllers like BIOS
 * max_ids:x                    x - target ID count per channel (1..MAXID)
 * rescan:Y                     rescan all channels/IDs 
 * rescan:N                     use all devices found until now
 * hdr_channel:x                x - number of virtual bus for host drives
 * shared_access:Y              disable driver reserve/release protocol to 
 *                              access a shared resource from several nodes, 
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 *                              appropriate controller firmware required
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 * shared_access:N              enable driver reserve/release protocol
 * probe_eisa_isa:Y             scan for EISA/ISA controllers
 * probe_eisa_isa:N             do not scan for EISA/ISA controllers
 * force_dma32:Y                use only 32 bit DMA mode
 * force_dma32:N                use 64 bit DMA mode, if supported
 *
 * The default values are: "gdth=disable:N,reserve_mode:1,reverse_scan:N,
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 *                          max_ids:127,rescan:N,hdr_channel:0,
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 *                          shared_access:Y,probe_eisa_isa:N,force_dma32:N".
 * Here is another example: "gdth=reserve_list:0,1,2,0,0,1,3,0,rescan:Y".
 * 
 * When loading the gdth driver as a module, the same options are available. 
 * You can set the IRQs with "IRQ=...". However, the syntax to specify the
 * options changes slightly. You must replace all ',' between options 
 * with ' ' and all ':' with '=' and you must use 
 * '1' in place of 'Y' and '0' in place of 'N'.
 * 
 * Default: "modprobe gdth disable=0 reserve_mode=1 reverse_scan=0
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 *           max_ids=127 rescan=0 hdr_channel=0 shared_access=0
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 *           probe_eisa_isa=0 force_dma32=0"
 * The other example: "modprobe gdth reserve_list=0,1,2,0,0,1,3,0 rescan=1".
 */

/* The meaning of the Scsi_Pointer members in this driver is as follows:
 * ptr:                     Chaining
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 * this_residual:           gdth_bufflen
 * buffer:                  gdth_sglist
 * dma_handle:              unused
 * buffers_residual:        gdth_sg_count
 * Status:                  unused
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 * Message:                 unused
 * have_data_in:            unused
 * sent_command:            unused
 * phase:                   unused
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 */


/* interrupt coalescing */
/* #define INT_COAL */

/* statistics */
#define GDTH_STATISTICS

#include <linux/module.h>

#include <linux/version.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/string.h>
#include <linux/ctype.h>
#include <linux/ioport.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/in.h>
#include <linux/proc_fs.h>
#include <linux/time.h>
#include <linux/timer.h>
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#include <linux/dma-mapping.h>
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#include <linux/list.h>
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#ifdef GDTH_RTC
#include <linux/mc146818rtc.h>
#endif
#include <linux/reboot.h>

#include <asm/dma.h>
#include <asm/system.h>
#include <asm/io.h>
#include <asm/uaccess.h>
#include <linux/spinlock.h>
#include <linux/blkdev.h>
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#include <linux/scatterlist.h>
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#include "scsi.h"
#include <scsi/scsi_host.h>
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#include "gdth.h"
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static void gdth_delay(int milliseconds);
static void gdth_eval_mapping(ulong32 size, ulong32 *cyls, int *heads, int *secs);
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static irqreturn_t gdth_interrupt(int irq, void *dev_id);
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static irqreturn_t __gdth_interrupt(gdth_ha_str *ha,
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                                    int gdth_from_wait, int* pIndex);
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static int gdth_sync_event(gdth_ha_str *ha, int service, unchar index,
                                                               Scsi_Cmnd *scp);
static int gdth_async_event(gdth_ha_str *ha);
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static void gdth_log_event(gdth_evt_data *dvr, char *buffer);

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static void gdth_putq(gdth_ha_str *ha, Scsi_Cmnd *scp, unchar priority);
static void gdth_next(gdth_ha_str *ha);
static int gdth_fill_raw_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp, unchar b);
static int gdth_special_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp);
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static gdth_evt_str *gdth_store_event(gdth_ha_str *ha, ushort source,
                                      ushort idx, gdth_evt_data *evt);
static int gdth_read_event(gdth_ha_str *ha, int handle, gdth_evt_str *estr);
static void gdth_readapp_event(gdth_ha_str *ha, unchar application, 
                               gdth_evt_str *estr);
static void gdth_clear_events(void);

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static void gdth_copy_internal_data(gdth_ha_str *ha, Scsi_Cmnd *scp,
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                                    char *buffer, ushort count, int to_buffer);
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static int gdth_internal_cache_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp);
static int gdth_fill_cache_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp, ushort hdrive);
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static void gdth_enable_int(gdth_ha_str *ha);
static int gdth_test_busy(gdth_ha_str *ha);
static int gdth_get_cmd_index(gdth_ha_str *ha);
static void gdth_release_event(gdth_ha_str *ha);
static int gdth_wait(gdth_ha_str *ha, int index,ulong32 time);
static int gdth_internal_cmd(gdth_ha_str *ha, unchar service, ushort opcode,
                                             ulong32 p1, ulong64 p2,ulong64 p3);
static int gdth_search_drives(gdth_ha_str *ha);
static int gdth_analyse_hdrive(gdth_ha_str *ha, ushort hdrive);
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static const char *gdth_ctr_name(gdth_ha_str *ha);
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static int gdth_open(struct inode *inode, struct file *filep);
static int gdth_close(struct inode *inode, struct file *filep);
static int gdth_ioctl(struct inode *inode, struct file *filep,
                      unsigned int cmd, unsigned long arg);

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static void gdth_flush(gdth_ha_str *ha);
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static int gdth_queuecommand(Scsi_Cmnd *scp,void (*done)(Scsi_Cmnd *));
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static int __gdth_queuecommand(gdth_ha_str *ha, struct scsi_cmnd *scp,
				struct gdth_cmndinfo *cmndinfo);
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static void gdth_scsi_done(struct scsi_cmnd *scp);
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#ifdef DEBUG_GDTH
static unchar   DebugState = DEBUG_GDTH;

#ifdef __SERIAL__
#define MAX_SERBUF 160
static void ser_init(void);
static void ser_puts(char *str);
static void ser_putc(char c);
static int  ser_printk(const char *fmt, ...);
static char strbuf[MAX_SERBUF+1];
#ifdef __COM2__
#define COM_BASE 0x2f8
#else
#define COM_BASE 0x3f8
#endif
static void ser_init()
{
    unsigned port=COM_BASE;

    outb(0x80,port+3);
    outb(0,port+1);
    /* 19200 Baud, if 9600: outb(12,port) */
    outb(6, port);
    outb(3,port+3);
    outb(0,port+1);
    /*
    ser_putc('I');
    ser_putc(' ');
    */
}

static void ser_puts(char *str)
{
    char *ptr;

    ser_init();
    for (ptr=str;*ptr;++ptr)
        ser_putc(*ptr);
}

static void ser_putc(char c)
{
    unsigned port=COM_BASE;

    while ((inb(port+5) & 0x20)==0);
    outb(c,port);
    if (c==0x0a)
    {
        while ((inb(port+5) & 0x20)==0);
        outb(0x0d,port);
    }
}

static int ser_printk(const char *fmt, ...)
{
    va_list args;
    int i;

    va_start(args,fmt);
    i = vsprintf(strbuf,fmt,args);
    ser_puts(strbuf);
    va_end(args);
    return i;
}

#define TRACE(a)    {if (DebugState==1) {ser_printk a;}}
#define TRACE2(a)   {if (DebugState==1 || DebugState==2) {ser_printk a;}}
#define TRACE3(a)   {if (DebugState!=0) {ser_printk a;}}

#else /* !__SERIAL__ */
#define TRACE(a)    {if (DebugState==1) {printk a;}}
#define TRACE2(a)   {if (DebugState==1 || DebugState==2) {printk a;}}
#define TRACE3(a)   {if (DebugState!=0) {printk a;}}
#endif

#else /* !DEBUG */
#define TRACE(a)
#define TRACE2(a)
#define TRACE3(a)
#endif

#ifdef GDTH_STATISTICS
static ulong32 max_rq=0, max_index=0, max_sg=0;
#ifdef INT_COAL
static ulong32 max_int_coal=0;
#endif
static ulong32 act_ints=0, act_ios=0, act_stats=0, act_rq=0;
static struct timer_list gdth_timer;
#endif

#define PTR2USHORT(a)   (ushort)(ulong)(a)
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#define GDTOFFSOF(a,b)  (size_t)&(((a*)0)->b)
#define INDEX_OK(i,t)   ((i)<ARRAY_SIZE(t))
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#define BUS_L2P(a,b)    ((b)>(a)->virt_bus ? (b-1):(b))

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#ifdef CONFIG_ISA
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static unchar   gdth_drq_tab[4] = {5,6,7,7};            /* DRQ table */
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#endif
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#if defined(CONFIG_EISA) || defined(CONFIG_ISA)
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static unchar   gdth_irq_tab[6] = {0,10,11,12,14,0};    /* IRQ table */
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#endif
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static unchar   gdth_polling;                           /* polling if TRUE */
static int      gdth_ctr_count  = 0;                    /* controller count */
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static LIST_HEAD(gdth_instances);                       /* controller list */
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static unchar   gdth_write_through = FALSE;             /* write through */
static gdth_evt_str ebuffer[MAX_EVENTS];                /* event buffer */
static int elastidx;
static int eoldidx;
static int major;

#define DIN     1                               /* IN data direction */
#define DOU     2                               /* OUT data direction */
#define DNO     DIN                             /* no data transfer */
#define DUN     DIN                             /* unknown data direction */
static unchar gdth_direction_tab[0x100] = {
    DNO,DNO,DIN,DIN,DOU,DIN,DIN,DOU,DIN,DUN,DOU,DOU,DUN,DUN,DUN,DIN,
    DNO,DIN,DIN,DOU,DIN,DOU,DNO,DNO,DOU,DNO,DIN,DNO,DIN,DOU,DNO,DUN,
    DIN,DUN,DIN,DUN,DOU,DIN,DUN,DUN,DIN,DIN,DOU,DNO,DUN,DIN,DOU,DOU,
    DOU,DOU,DOU,DNO,DIN,DNO,DNO,DIN,DOU,DOU,DOU,DOU,DIN,DOU,DIN,DOU,
    DOU,DOU,DIN,DIN,DIN,DNO,DUN,DNO,DNO,DNO,DUN,DNO,DOU,DIN,DUN,DUN,
    DUN,DUN,DUN,DUN,DUN,DOU,DUN,DUN,DUN,DUN,DIN,DUN,DUN,DUN,DUN,DUN,
    DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
    DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
    DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DIN,DUN,DOU,DUN,DUN,DUN,DUN,DUN,
    DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DIN,DUN,
    DUN,DUN,DUN,DUN,DUN,DNO,DNO,DUN,DIN,DNO,DOU,DUN,DNO,DUN,DOU,DOU,
    DOU,DOU,DOU,DNO,DUN,DIN,DOU,DIN,DIN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
    DUN,DUN,DOU,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
    DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,
    DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DOU,DUN,DUN,DUN,DUN,DUN,
    DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN,DUN
};

/* LILO and modprobe/insmod parameters */
/* IRQ list for GDT3000/3020 EISA controllers */
static int irq[MAXHA] __initdata = 
{0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff};
/* disable driver flag */
static int disable __initdata = 0;
/* reserve flag */
static int reserve_mode = 1;                  
/* reserve list */
static int reserve_list[MAX_RES_ARGS] = 
{0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff};
/* scan order for PCI controllers */
static int reverse_scan = 0;
/* virtual channel for the host drives */
static int hdr_channel = 0;
/* max. IDs per channel */
static int max_ids = MAXID;
/* rescan all IDs */
static int rescan = 0;
/* shared access */
static int shared_access = 1;
/* enable support for EISA and ISA controllers */
static int probe_eisa_isa = 0;
/* 64 bit DMA mode, support for drives > 2 TB, if force_dma32 = 0 */
static int force_dma32 = 0;

/* parameters for modprobe/insmod */
module_param_array(irq, int, NULL, 0);
module_param(disable, int, 0);
module_param(reserve_mode, int, 0);
module_param_array(reserve_list, int, NULL, 0);
module_param(reverse_scan, int, 0);
module_param(hdr_channel, int, 0);
module_param(max_ids, int, 0);
module_param(rescan, int, 0);
module_param(shared_access, int, 0);
module_param(probe_eisa_isa, int, 0);
module_param(force_dma32, int, 0);
MODULE_AUTHOR("Achim Leubner");
MODULE_LICENSE("GPL");

/* ioctl interface */
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static const struct file_operations gdth_fops = {
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    .ioctl   = gdth_ioctl,
    .open    = gdth_open,
    .release = gdth_close,
};

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/*
 * gdth scsi_command access wrappers.
 *   below 6 functions are used throughout the driver to access scsi_command's
 *   io parameters. The reason we do not use the regular accessors from
 *   scsi_cmnd.h is because of gdth_execute(). Since it is unrecommended for
 *   llds to directly set scsi_cmnd's IO members. This driver will use SCp
 *   members for IO parameters, and will copy scsi_cmnd's members to Scp
 *   members in queuecommand. For internal commands through gdth_execute()
 *   SCp's members will be set directly.
 */
static inline unsigned gdth_bufflen(struct scsi_cmnd *cmd)
{
	return (unsigned)cmd->SCp.this_residual;
}

static inline void gdth_set_bufflen(struct scsi_cmnd *cmd, unsigned bufflen)
{
	cmd->SCp.this_residual = bufflen;
}

static inline unsigned gdth_sg_count(struct scsi_cmnd *cmd)
{
	return (unsigned)cmd->SCp.buffers_residual;
}

static inline void gdth_set_sg_count(struct scsi_cmnd *cmd, unsigned sg_count)
{
	cmd->SCp.buffers_residual = sg_count;
}

static inline struct scatterlist *gdth_sglist(struct scsi_cmnd *cmd)
{
	return cmd->SCp.buffer;
}

static inline void gdth_set_sglist(struct scsi_cmnd *cmd,
                                   struct scatterlist *sglist)
{
	cmd->SCp.buffer = sglist;
}

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#include "gdth_proc.h"
#include "gdth_proc.c"

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static gdth_ha_str *gdth_find_ha(int hanum)
{
	gdth_ha_str *ha;

	list_for_each_entry(ha, &gdth_instances, list)
		if (hanum == ha->hanum)
			return ha;

	return NULL;
}

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static struct gdth_cmndinfo *gdth_get_cmndinfo(gdth_ha_str *ha)
{
	struct gdth_cmndinfo *priv = NULL;
	ulong flags;
	int i;

	spin_lock_irqsave(&ha->smp_lock, flags);

	for (i=0; i<GDTH_MAXCMDS; ++i) {
		if (ha->cmndinfo[i].index == 0) {
			priv = &ha->cmndinfo[i];
			priv->index = i+1;
			memset(priv, 0, sizeof(*priv));
			break;
		}
	}

	spin_unlock_irqrestore(&ha->smp_lock, flags);

	return priv;
}

static void gdth_put_cmndinfo(struct gdth_cmndinfo *priv)
{
	BUG_ON(!priv);
	priv->index = 0;
}

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static void gdth_delay(int milliseconds)
{
    if (milliseconds == 0) {
        udelay(1);
    } else {
        mdelay(milliseconds);
    }
}

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static void gdth_scsi_done(struct scsi_cmnd *scp)
{
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	struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
	int internal_command = cmndinfo->internal_command;

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	TRACE2(("gdth_scsi_done()\n"));
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	gdth_put_cmndinfo(cmndinfo);
	scp->host_scribble = NULL;

	if (internal_command)
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		complete((struct completion *)scp->request);
	else
		scp->scsi_done(scp);
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}

int __gdth_execute(struct scsi_device *sdev, gdth_cmd_str *gdtcmd, char *cmnd,
                   int timeout, u32 *info)
{
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    gdth_ha_str *ha = shost_priv(sdev->host);
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    Scsi_Cmnd *scp;
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    struct gdth_cmndinfo cmndinfo;
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    struct scatterlist one_sg;
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    DECLARE_COMPLETION_ONSTACK(wait);
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    int rval;

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    scp = kzalloc(sizeof(*scp), GFP_KERNEL);
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    if (!scp)
        return -ENOMEM;
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    scp->device = sdev;
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    memset(&cmndinfo, 0, sizeof(cmndinfo));

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    /* use request field to save the ptr. to completion struct. */
    scp->request = (struct request *)&wait;
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    scp->timeout_per_command = timeout*HZ;
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    sg_init_one(&one_sg, gdtcmd, sizeof(*gdtcmd));
    gdth_set_sglist(scp, &one_sg);
    gdth_set_sg_count(scp, 1);
    gdth_set_bufflen(scp, sizeof(*gdtcmd));
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    scp->cmd_len = 12;
    memcpy(scp->cmnd, cmnd, 12);
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    cmndinfo.priority = IOCTL_PRI;
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    cmndinfo.internal_command = 1;

    TRACE(("__gdth_execute() cmd 0x%x\n", scp->cmnd[0]));
    __gdth_queuecommand(ha, scp, &cmndinfo);

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    wait_for_completion(&wait);

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    rval = cmndinfo.status;
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    if (info)
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        *info = cmndinfo.info;
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    kfree(scp);
    return rval;
}

int gdth_execute(struct Scsi_Host *shost, gdth_cmd_str *gdtcmd, char *cmnd,
                 int timeout, u32 *info)
{
    struct scsi_device *sdev = scsi_get_host_dev(shost);
    int rval = __gdth_execute(sdev, gdtcmd, cmnd, timeout, info);

    scsi_free_host_dev(sdev);
    return rval;
}

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static void gdth_eval_mapping(ulong32 size, ulong32 *cyls, int *heads, int *secs)
{
    *cyls = size /HEADS/SECS;
    if (*cyls <= MAXCYLS) {
        *heads = HEADS;
        *secs = SECS;
    } else {                                        /* too high for 64*32 */
        *cyls = size /MEDHEADS/MEDSECS;
        if (*cyls <= MAXCYLS) {
            *heads = MEDHEADS;
            *secs = MEDSECS;
        } else {                                    /* too high for 127*63 */
            *cyls = size /BIGHEADS/BIGSECS;
            *heads = BIGHEADS;
            *secs = BIGSECS;
        }
    }
}

/* controller search and initialization functions */
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#ifdef CONFIG_EISA
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static int __init gdth_search_eisa(ushort eisa_adr)
{
    ulong32 id;
    
    TRACE(("gdth_search_eisa() adr. %x\n",eisa_adr));
    id = inl(eisa_adr+ID0REG);
    if (id == GDT3A_ID || id == GDT3B_ID) {     /* GDT3000A or GDT3000B */
        if ((inb(eisa_adr+EISAREG) & 8) == 0)   
            return 0;                           /* not EISA configured */
        return 1;
    }
    if (id == GDT3_ID)                          /* GDT3000 */
        return 1;

    return 0;                                   
}
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#endif /* CONFIG_EISA */
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#ifdef CONFIG_ISA
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static int __init gdth_search_isa(ulong32 bios_adr)
{
    void __iomem *addr;
    ulong32 id;

    TRACE(("gdth_search_isa() bios adr. %x\n",bios_adr));
    if ((addr = ioremap(bios_adr+BIOS_ID_OFFS, sizeof(ulong32))) != NULL) {
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        id = readl(addr);
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        iounmap(addr);
        if (id == GDT2_ID)                          /* GDT2000 */
            return 1;
    }
    return 0;
}
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#endif /* CONFIG_ISA */
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#ifdef CONFIG_PCI
static void gdth_search_dev(gdth_pci_str *pcistr, ushort *cnt,
                            ushort vendor, ushort dev);

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static int __init gdth_search_pci(gdth_pci_str *pcistr)
{
    ushort device, cnt;
    
    TRACE(("gdth_search_pci()\n"));

    cnt = 0;
    for (device = 0; device <= PCI_DEVICE_ID_VORTEX_GDT6555; ++device)
        gdth_search_dev(pcistr, &cnt, PCI_VENDOR_ID_VORTEX, device);
    for (device = PCI_DEVICE_ID_VORTEX_GDT6x17RP; 
         device <= PCI_DEVICE_ID_VORTEX_GDTMAXRP; ++device)
        gdth_search_dev(pcistr, &cnt, PCI_VENDOR_ID_VORTEX, device);
    gdth_search_dev(pcistr, &cnt, PCI_VENDOR_ID_VORTEX, 
                    PCI_DEVICE_ID_VORTEX_GDTNEWRX);
    gdth_search_dev(pcistr, &cnt, PCI_VENDOR_ID_VORTEX, 
                    PCI_DEVICE_ID_VORTEX_GDTNEWRX2);
    gdth_search_dev(pcistr, &cnt, PCI_VENDOR_ID_INTEL,
                    PCI_DEVICE_ID_INTEL_SRC);
    gdth_search_dev(pcistr, &cnt, PCI_VENDOR_ID_INTEL,
                    PCI_DEVICE_ID_INTEL_SRC_XSCALE);
    return cnt;
}

/* Vortex only makes RAID controllers.
 * We do not really want to specify all 550 ids here, so wildcard match.
 */
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static struct pci_device_id gdthtable[] __maybe_unused = {
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    {PCI_VENDOR_ID_VORTEX,PCI_ANY_ID,PCI_ANY_ID, PCI_ANY_ID},
    {PCI_VENDOR_ID_INTEL,PCI_DEVICE_ID_INTEL_SRC,PCI_ANY_ID,PCI_ANY_ID}, 
    {PCI_VENDOR_ID_INTEL,PCI_DEVICE_ID_INTEL_SRC_XSCALE,PCI_ANY_ID,PCI_ANY_ID}, 
    {0}
};
MODULE_DEVICE_TABLE(pci,gdthtable);

static void __init gdth_search_dev(gdth_pci_str *pcistr, ushort *cnt,
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                                   ushort vendor, ushort device)
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{
    ulong base0, base1, base2;
    struct pci_dev *pdev;
    
    TRACE(("gdth_search_dev() cnt %d vendor %x device %x\n",
          *cnt, vendor, device));

    pdev = NULL;
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    while ((pdev = pci_get_device(vendor, device, pdev))
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           != NULL) {
        if (pci_enable_device(pdev))
            continue;
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        if (*cnt >= MAXHA) {
            pci_dev_put(pdev);
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            return;
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        }

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        /* GDT PCI controller found, resources are already in pdev */
        pcistr[*cnt].pdev = pdev;
        pcistr[*cnt].irq = pdev->irq;
        base0 = pci_resource_flags(pdev, 0);
        base1 = pci_resource_flags(pdev, 1);
        base2 = pci_resource_flags(pdev, 2);
        if (device <= PCI_DEVICE_ID_VORTEX_GDT6000B ||   /* GDT6000/B */
            device >= PCI_DEVICE_ID_VORTEX_GDT6x17RP) {  /* MPR */
            if (!(base0 & IORESOURCE_MEM)) 
                continue;
            pcistr[*cnt].dpmem = pci_resource_start(pdev, 0);
        } else {                                  /* GDT6110, GDT6120, .. */
            if (!(base0 & IORESOURCE_MEM) ||
                !(base2 & IORESOURCE_MEM) ||
                !(base1 & IORESOURCE_IO)) 
                continue;
            pcistr[*cnt].dpmem = pci_resource_start(pdev, 2);
            pcistr[*cnt].io_mm = pci_resource_start(pdev, 0);
            pcistr[*cnt].io    = pci_resource_start(pdev, 1);
        }
        TRACE2(("Controller found at %d/%d, irq %d, dpmem 0x%lx\n",
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                pcistr[*cnt].pdev->bus->number,
		PCI_SLOT(pcistr[*cnt].pdev->devfn),
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                pcistr[*cnt].irq, pcistr[*cnt].dpmem));
        (*cnt)++;
    }       
}   

static void __init gdth_sort_pci(gdth_pci_str *pcistr, int cnt)
{    
    gdth_pci_str temp;
    int i, changed;
    
    TRACE(("gdth_sort_pci() cnt %d\n",cnt));
    if (cnt == 0)
        return;

    do {
        changed = FALSE;
        for (i = 0; i < cnt-1; ++i) {
            if (!reverse_scan) {
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                if ((pcistr[i].pdev->bus->number > pcistr[i+1].pdev->bus->number) ||
                    (pcistr[i].pdev->bus->number == pcistr[i+1].pdev->bus->number &&
                     PCI_SLOT(pcistr[i].pdev->devfn) >
                     PCI_SLOT(pcistr[i+1].pdev->devfn))) {
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                    temp = pcistr[i];
                    pcistr[i] = pcistr[i+1];
                    pcistr[i+1] = temp;
                    changed = TRUE;
                }
            } else {
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                if ((pcistr[i].pdev->bus->number < pcistr[i+1].pdev->bus->number) ||
                    (pcistr[i].pdev->bus->number == pcistr[i+1].pdev->bus->number &&
                     PCI_SLOT(pcistr[i].pdev->devfn) <
                     PCI_SLOT(pcistr[i+1].pdev->devfn))) {
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                    temp = pcistr[i];
                    pcistr[i] = pcistr[i+1];
                    pcistr[i+1] = temp;
                    changed = TRUE;
                }
            }
        }
    } while (changed);
}
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#endif /* CONFIG_PCI */
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#ifdef CONFIG_EISA
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static int __init gdth_init_eisa(ushort eisa_adr,gdth_ha_str *ha)
{
    ulong32 retries,id;
    unchar prot_ver,eisacf,i,irq_found;

    TRACE(("gdth_init_eisa() adr. %x\n",eisa_adr));
    
    /* disable board interrupts, deinitialize services */
    outb(0xff,eisa_adr+EDOORREG);
    outb(0x00,eisa_adr+EDENABREG);
    outb(0x00,eisa_adr+EINTENABREG);
    
    outb(0xff,eisa_adr+LDOORREG);
    retries = INIT_RETRIES;
    gdth_delay(20);
    while (inb(eisa_adr+EDOORREG) != 0xff) {
        if (--retries == 0) {
            printk("GDT-EISA: Initialization error (DEINIT failed)\n");
            return 0;
        }
        gdth_delay(1);
        TRACE2(("wait for DEINIT: retries=%d\n",retries));
    }
    prot_ver = inb(eisa_adr+MAILBOXREG);
    outb(0xff,eisa_adr+EDOORREG);
    if (prot_ver != PROTOCOL_VERSION) {
        printk("GDT-EISA: Illegal protocol version\n");
        return 0;
    }
    ha->bmic = eisa_adr;
    ha->brd_phys = (ulong32)eisa_adr >> 12;

    outl(0,eisa_adr+MAILBOXREG);
    outl(0,eisa_adr+MAILBOXREG+4);
    outl(0,eisa_adr+MAILBOXREG+8);
    outl(0,eisa_adr+MAILBOXREG+12);

    /* detect IRQ */ 
    if ((id = inl(eisa_adr+ID0REG)) == GDT3_ID) {
        ha->oem_id = OEM_ID_ICP;
        ha->type = GDT_EISA;
        ha->stype = id;
        outl(1,eisa_adr+MAILBOXREG+8);
        outb(0xfe,eisa_adr+LDOORREG);
        retries = INIT_RETRIES;
        gdth_delay(20);
        while (inb(eisa_adr+EDOORREG) != 0xfe) {
            if (--retries == 0) {
                printk("GDT-EISA: Initialization error (get IRQ failed)\n");
                return 0;
            }
            gdth_delay(1);
        }
        ha->irq = inb(eisa_adr+MAILBOXREG);
        outb(0xff,eisa_adr+EDOORREG);
        TRACE2(("GDT3000/3020: IRQ=%d\n",ha->irq));
        /* check the result */
        if (ha->irq == 0) {
                TRACE2(("Unknown IRQ, use IRQ table from cmd line !\n"));
                for (i = 0, irq_found = FALSE; 
                     i < MAXHA && irq[i] != 0xff; ++i) {
                if (irq[i]==10 || irq[i]==11 || irq[i]==12 || irq[i]==14) {
                    irq_found = TRUE;
                    break;
                }
                }
            if (irq_found) {
                ha->irq = irq[i];
                irq[i] = 0;
                printk("GDT-EISA: Can not detect controller IRQ,\n");
                printk("Use IRQ setting from command line (IRQ = %d)\n",
                       ha->irq);
            } else {
                printk("GDT-EISA: Initialization error (unknown IRQ), Enable\n");
                printk("the controller BIOS or use command line parameters\n");
                return 0;
            }
        }
    } else {
        eisacf = inb(eisa_adr+EISAREG) & 7;
        if (eisacf > 4)                         /* level triggered */
            eisacf -= 4;
        ha->irq = gdth_irq_tab[eisacf];
        ha->oem_id = OEM_ID_ICP;
        ha->type = GDT_EISA;
        ha->stype = id;
    }

    ha->dma64_support = 0;
    return 1;
}
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#ifdef CONFIG_ISA
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static int __init gdth_init_isa(ulong32 bios_adr,gdth_ha_str *ha)
{
    register gdt2_dpram_str __iomem *dp2_ptr;
    int i;
    unchar irq_drq,prot_ver;
    ulong32 retries;

    TRACE(("gdth_init_isa() bios adr. %x\n",bios_adr));

    ha->brd = ioremap(bios_adr, sizeof(gdt2_dpram_str));
    if (ha->brd == NULL) {
        printk("GDT-ISA: Initialization error (DPMEM remap error)\n");
        return 0;
    }
    dp2_ptr = ha->brd;
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    writeb(1, &dp2_ptr->io.memlock); /* switch off write protection */
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    /* reset interface area */
    memset_io(&dp2_ptr->u, 0, sizeof(dp2_ptr->u));
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    if (readl(&dp2_ptr->u) != 0) {
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        printk("GDT-ISA: Initialization error (DPMEM write error)\n");
        iounmap(ha->brd);
        return 0;
    }

    /* disable board interrupts, read DRQ and IRQ */
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    writeb(0xff, &dp2_ptr->io.irqdel);
    writeb(0x00, &dp2_ptr->io.irqen);
    writeb(0x00, &dp2_ptr->u.ic.S_Status);
    writeb(0x00, &dp2_ptr->u.ic.Cmd_Index);
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    irq_drq = readb(&dp2_ptr->io.rq);
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    for (i=0; i<3; ++i) {
        if ((irq_drq & 1)==0)
            break;
        irq_drq >>= 1;
    }
    ha->drq = gdth_drq_tab[i];

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    irq_drq = readb(&dp2_ptr->io.rq) >> 3;
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    for (i=1; i<5; ++i) {
        if ((irq_drq & 1)==0)
            break;
        irq_drq >>= 1;
    }
    ha->irq = gdth_irq_tab[i];

    /* deinitialize services */
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    writel(bios_adr, &dp2_ptr->u.ic.S_Info[0]);
    writeb(0xff, &dp2_ptr->u.ic.S_Cmd_Indx);
    writeb(0, &dp2_ptr->io.event);
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    retries = INIT_RETRIES;
    gdth_delay(20);
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    while (readb(&dp2_ptr->u.ic.S_Status) != 0xff) {
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        if (--retries == 0) {
            printk("GDT-ISA: Initialization error (DEINIT failed)\n");
            iounmap(ha->brd);
            return 0;
        }
        gdth_delay(1);
    }
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    prot_ver = (unchar)readl(&dp2_ptr->u.ic.S_Info[0]);
    writeb(0, &dp2_ptr->u.ic.Status);
    writeb(0xff, &dp2_ptr->io.irqdel);
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    if (prot_ver != PROTOCOL_VERSION) {
        printk("GDT-ISA: Illegal protocol version\n");
        iounmap(ha->brd);
        return 0;
    }

    ha->oem_id = OEM_ID_ICP;
    ha->type = GDT_ISA;
    ha->ic_all_size = sizeof(dp2_ptr->u);
    ha->stype= GDT2_ID;
    ha->brd_phys = bios_adr >> 4;

    /* special request to controller BIOS */
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    writel(0x00, &dp2_ptr->u.ic.S_Info[0]);
    writel(0x00, &dp2_ptr->u.ic.S_Info[1]);
    writel(0x01, &dp2_ptr->u.ic.S_Info[2]);
    writel(0x00, &dp2_ptr->u.ic.S_Info[3]);
    writeb(0xfe, &dp2_ptr->u.ic.S_Cmd_Indx);
    writeb(0, &dp2_ptr->io.event);
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    retries = INIT_RETRIES;
    gdth_delay(20);
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    while (readb(&dp2_ptr->u.ic.S_Status) != 0xfe) {
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        if (--retries == 0) {
            printk("GDT-ISA: Initialization error\n");
            iounmap(ha->brd);
            return 0;
        }
        gdth_delay(1);
    }
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    writeb(0, &dp2_ptr->u.ic.Status);
    writeb(0xff, &dp2_ptr->io.irqdel);
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    ha->dma64_support = 0;
    return 1;
}
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#endif /* CONFIG_ISA */
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#ifdef CONFIG_PCI
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static int __init gdth_init_pci(gdth_pci_str *pcistr,gdth_ha_str *ha)
{
    register gdt6_dpram_str __iomem *dp6_ptr;
    register gdt6c_dpram_str __iomem *dp6c_ptr;
    register gdt6m_dpram_str __iomem *dp6m_ptr;
    ulong32 retries;
    unchar prot_ver;
    ushort command;
    int i, found = FALSE;

    TRACE(("gdth_init_pci()\n"));

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    if (pcistr->pdev->vendor == PCI_VENDOR_ID_INTEL)
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        ha->oem_id = OEM_ID_INTEL;
    else
        ha->oem_id = OEM_ID_ICP;
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    ha->brd_phys = (pcistr->pdev->bus->number << 8) | (pcistr->pdev->devfn & 0xf8);
    ha->stype = (ulong32)pcistr->pdev->device;
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    ha->irq = pcistr->irq;
    ha->pdev = pcistr->pdev;
    
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    if (ha->pdev->device <= PCI_DEVICE_ID_VORTEX_GDT6000B) {  /* GDT6000/B */
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        TRACE2(("init_pci() dpmem %lx irq %d\n",pcistr->dpmem,ha->irq));
        ha->brd = ioremap(pcistr->dpmem, sizeof(gdt6_dpram_str));
        if (ha->brd == NULL) {
            printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
            return 0;
        }
        /* check and reset interface area */
        dp6_ptr = ha->brd;
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        writel(DPMEM_MAGIC, &dp6_ptr->u);
        if (readl(&dp6_ptr->u) != DPMEM_MAGIC) {
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            printk("GDT-PCI: Cannot access DPMEM at 0x%lx (shadowed?)\n", 
                   pcistr->dpmem);
            found = FALSE;
            for (i = 0xC8000; i < 0xE8000; i += 0x4000) {
                iounmap(ha->brd);
                ha->brd = ioremap(i, sizeof(ushort)); 
                if (ha->brd == NULL) {
                    printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
                    return 0;
                }
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                if (readw(ha->brd) != 0xffff) {
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                    TRACE2(("init_pci_old() address 0x%x busy\n", i));
                    continue;
                }
                iounmap(ha->brd);
                pci_write_config_dword(pcistr->pdev, 
                                       PCI_BASE_ADDRESS_0, i);
                ha->brd = ioremap(i, sizeof(gdt6_dpram_str)); 
                if (ha->brd == NULL) {
                    printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
                    return 0;
                }
                dp6_ptr = ha->brd;
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                writel(DPMEM_MAGIC, &dp6_ptr->u);
                if (readl(&dp6_ptr->u) == DPMEM_MAGIC) {
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                    printk("GDT-PCI: Use free address at 0x%x\n", i);
                    found = TRUE;
                    break;
                }
            }   
            if (!found) {
                printk("GDT-PCI: No free address found!\n");
                iounmap(ha->brd);
                return 0;
            }
        }
        memset_io(&dp6_ptr->u, 0, sizeof(dp6_ptr->u));
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        if (readl(&dp6_ptr->u) != 0) {
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            printk("GDT-PCI: Initialization error (DPMEM write error)\n");
            iounmap(ha->brd);
            return 0;
        }
        
        /* disable board interrupts, deinit services */
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        writeb(0xff, &dp6_ptr->io.irqdel);
        writeb(0x00, &dp6_ptr->io.irqen);
        writeb(0x00, &dp6_ptr->u.ic.S_Status);
        writeb(0x00, &dp6_ptr->u.ic.Cmd_Index);

        writel(pcistr->dpmem, &dp6_ptr->u.ic.S_Info[0]);
        writeb(0xff, &dp6_ptr->u.ic.S_Cmd_Indx);
        writeb(0, &dp6_ptr->io.event);
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        retries = INIT_RETRIES;
        gdth_delay(20);
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        while (readb(&dp6_ptr->u.ic.S_Status) != 0xff) {
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            if (--retries == 0) {
                printk("GDT-PCI: Initialization error (DEINIT failed)\n");
                iounmap(ha->brd);
                return 0;
            }
            gdth_delay(1);
        }
1003 1004 1005
        prot_ver = (unchar)readl(&dp6_ptr->u.ic.S_Info[0]);
        writeb(0, &dp6_ptr->u.ic.S_Status);
        writeb(0xff, &dp6_ptr->io.irqdel);
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        if (prot_ver != PROTOCOL_VERSION) {
            printk("GDT-PCI: Illegal protocol version\n");
            iounmap(ha->brd);
            return 0;
        }

        ha->type = GDT_PCI;
        ha->ic_all_size = sizeof(dp6_ptr->u);
        
        /* special command to controller BIOS */
1016 1017 1018 1019 1020 1021
        writel(0x00, &dp6_ptr->u.ic.S_Info[0]);
        writel(0x00, &dp6_ptr->u.ic.S_Info[1]);
        writel(0x00, &dp6_ptr->u.ic.S_Info[2]);
        writel(0x00, &dp6_ptr->u.ic.S_Info[3]);
        writeb(0xfe, &dp6_ptr->u.ic.S_Cmd_Indx);
        writeb(0, &dp6_ptr->io.event);
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        retries = INIT_RETRIES;
        gdth_delay(20);
1024
        while (readb(&dp6_ptr->u.ic.S_Status) != 0xfe) {
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            if (--retries == 0) {
                printk("GDT-PCI: Initialization error\n");
                iounmap(ha->brd);
                return 0;
            }
            gdth_delay(1);
        }
1032 1033
        writeb(0, &dp6_ptr->u.ic.S_Status);
        writeb(0xff, &dp6_ptr->io.irqdel);
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        ha->dma64_support = 0;

1037
    } else if (ha->pdev->device <= PCI_DEVICE_ID_VORTEX_GDT6555) { /* GDT6110, ... */
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        ha->plx = (gdt6c_plx_regs *)pcistr->io;
        TRACE2(("init_pci_new() dpmem %lx irq %d\n",
            pcistr->dpmem,ha->irq));
        ha->brd = ioremap(pcistr->dpmem, sizeof(gdt6c_dpram_str));
        if (ha->brd == NULL) {
            printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
            iounmap(ha->brd);
            return 0;
        }
        /* check and reset interface area */
        dp6c_ptr = ha->brd;
1049 1050
        writel(DPMEM_MAGIC, &dp6c_ptr->u);
        if (readl(&dp6c_ptr->u) != DPMEM_MAGIC) {
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            printk("GDT-PCI: Cannot access DPMEM at 0x%lx (shadowed?)\n", 
                   pcistr->dpmem);
            found = FALSE;
            for (i = 0xC8000; i < 0xE8000; i += 0x4000) {
                iounmap(ha->brd);
                ha->brd = ioremap(i, sizeof(ushort)); 
                if (ha->brd == NULL) {
                    printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
                    return 0;
                }
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                if (readw(ha->brd) != 0xffff) {
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                    TRACE2(("init_pci_plx() address 0x%x busy\n", i));
                    continue;
                }
                iounmap(ha->brd);
                pci_write_config_dword(pcistr->pdev, 
                                       PCI_BASE_ADDRESS_2, i);
                ha->brd = ioremap(i, sizeof(gdt6c_dpram_str)); 
                if (ha->brd == NULL) {
                    printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
                    return 0;
                }
                dp6c_ptr = ha->brd;
1074 1075
                writel(DPMEM_MAGIC, &dp6c_ptr->u);
                if (readl(&dp6c_ptr->u) == DPMEM_MAGIC) {
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                    printk("GDT-PCI: Use free address at 0x%x\n", i);
                    found = TRUE;
                    break;
                }
            }   
            if (!found) {
                printk("GDT-PCI: No free address found!\n");
                iounmap(ha->brd);
                return 0;
            }
        }
        memset_io(&dp6c_ptr->u, 0, sizeof(dp6c_ptr->u));
1088
        if (readl(&dp6c_ptr->u) != 0) {
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            printk("GDT-PCI: Initialization error (DPMEM write error)\n");
            iounmap(ha->brd);
            return 0;
        }
        
        /* disable board interrupts, deinit services */
        outb(0x00,PTR2USHORT(&ha->plx->control1));
        outb(0xff,PTR2USHORT(&ha->plx->edoor_reg));
        
1098 1099
        writeb(0x00, &dp6c_ptr->u.ic.S_Status);
        writeb(0x00, &dp6c_ptr->u.ic.Cmd_Index);
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        writel(pcistr->dpmem, &dp6c_ptr->u.ic.S_Info[0]);
        writeb(0xff, &dp6c_ptr->u.ic.S_Cmd_Indx);
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        outb(1,PTR2USHORT(&ha->plx->ldoor_reg));

        retries = INIT_RETRIES;
        gdth_delay(20);
1108
        while (readb(&dp6c_ptr->u.ic.S_Status) != 0xff) {
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            if (--retries == 0) {
                printk("GDT-PCI: Initialization error (DEINIT failed)\n");
                iounmap(ha->brd);
                return 0;
            }
            gdth_delay(1);
        }
1116 1117
        prot_ver = (unchar)readl(&dp6c_ptr->u.ic.S_Info[0]);
        writeb(0, &dp6c_ptr->u.ic.Status);
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        if (prot_ver != PROTOCOL_VERSION) {
            printk("GDT-PCI: Illegal protocol version\n");
            iounmap(ha->brd);
            return 0;
        }

        ha->type = GDT_PCINEW;
        ha->ic_all_size = sizeof(dp6c_ptr->u);

        /* special command to controller BIOS */
1128 1129 1130 1131 1132
        writel(0x00, &dp6c_ptr->u.ic.S_Info[0]);
        writel(0x00, &dp6c_ptr->u.ic.S_Info[1]);
        writel(0x00, &dp6c_ptr->u.ic.S_Info[2]);
        writel(0x00, &dp6c_ptr->u.ic.S_Info[3]);
        writeb(0xfe, &dp6c_ptr->u.ic.S_Cmd_Indx);
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        outb(1,PTR2USHORT(&ha->plx->ldoor_reg));

        retries = INIT_RETRIES;
        gdth_delay(20);
1138
        while (readb(&dp6c_ptr->u.ic.S_Status) != 0xfe) {
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            if (--retries == 0) {
                printk("GDT-PCI: Initialization error\n");
                iounmap(ha->brd);
                return 0;
            }
            gdth_delay(1);
        }
1146
        writeb(0, &dp6c_ptr->u.ic.S_Status);
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        ha->dma64_support = 0;

    } else {                                            /* MPR */
        TRACE2(("init_pci_mpr() dpmem %lx irq %d\n",pcistr->dpmem,ha->irq));
        ha->brd = ioremap(pcistr->dpmem, sizeof(gdt6m_dpram_str));
        if (ha->brd == NULL) {
            printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
            return 0;
        }

        /* manipulate config. space to enable DPMEM, start RP controller */
        pci_read_config_word(pcistr->pdev, PCI_COMMAND, &command);
        command |= 6;
        pci_write_config_word(pcistr->pdev, PCI_COMMAND, command);
        if (pci_resource_start(pcistr->pdev, 8) == 1UL)
            pci_resource_start(pcistr->pdev, 8) = 0UL;
        i = 0xFEFF0001UL;
        pci_write_config_dword(pcistr->pdev, PCI_ROM_ADDRESS, i);
        gdth_delay(1);
        pci_write_config_dword(pcistr->pdev, PCI_ROM_ADDRESS,
                               pci_resource_start(pcistr->pdev, 8));
        
        dp6m_ptr = ha->brd;

        /* Ensure that it is safe to access the non HW portions of DPMEM.
         * Aditional check needed for Xscale based RAID controllers */
1174
        while( ((int)readb(&dp6m_ptr->i960r.sema0_reg) ) & 3 )
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            gdth_delay(1);
        
        /* check and reset interface area */
1178 1179
        writel(DPMEM_MAGIC, &dp6m_ptr->u);
        if (readl(&dp6m_ptr->u) != DPMEM_MAGIC) {
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            printk("GDT-PCI: Cannot access DPMEM at 0x%lx (shadowed?)\n", 
                   pcistr->dpmem);
            found = FALSE;
            for (i = 0xC8000; i < 0xE8000; i += 0x4000) {
                iounmap(ha->brd);
                ha->brd = ioremap(i, sizeof(ushort)); 
                if (ha->brd == NULL) {
                    printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
                    return 0;
                }
1190
                if (readw(ha->brd) != 0xffff) {
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                    TRACE2(("init_pci_mpr() address 0x%x busy\n", i));
                    continue;
                }
                iounmap(ha->brd);
                pci_write_config_dword(pcistr->pdev, 
                                       PCI_BASE_ADDRESS_0, i);
                ha->brd = ioremap(i, sizeof(gdt6m_dpram_str)); 
                if (ha->brd == NULL) {
                    printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
                    return 0;
                }
                dp6m_ptr = ha->brd;
1203 1204
                writel(DPMEM_MAGIC, &dp6m_ptr->u);
                if (readl(&dp6m_ptr->u) == DPMEM_MAGIC) {
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                    printk("GDT-PCI: Use free address at 0x%x\n", i);
                    found = TRUE;
                    break;
                }
            }   
            if (!found) {
                printk("GDT-PCI: No free address found!\n");
                iounmap(ha->brd);
                return 0;
            }
        }
        memset_io(&dp6m_ptr->u, 0, sizeof(dp6m_ptr->u));
        
        /* disable board interrupts, deinit services */
1219
        writeb(readb(&dp6m_ptr->i960r.edoor_en_reg) | 4,
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                    &dp6m_ptr->i960r.edoor_en_reg);
1221 1222 1223
        writeb(0xff, &dp6m_ptr->i960r.edoor_reg);
        writeb(0x00, &dp6m_ptr->u.ic.S_Status);
        writeb(0x00, &dp6m_ptr->u.ic.Cmd_Index);
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        writel(pcistr->dpmem, &dp6m_ptr->u.ic.S_Info[0]);
        writeb(0xff, &dp6m_ptr->u.ic.S_Cmd_Indx);
        writeb(1, &dp6m_ptr->i960r.ldoor_reg);
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        retries = INIT_RETRIES;
        gdth_delay(20);
1230
        while (readb(&dp6m_ptr->u.ic.S_Status) != 0xff) {
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            if (--retries == 0) {
                printk("GDT-PCI: Initialization error (DEINIT failed)\n");
                iounmap(ha->brd);
                return 0;
            }
            gdth_delay(1);
        }
1238 1239
        prot_ver = (unchar)readl(&dp6m_ptr->u.ic.S_Info[0]);
        writeb(0, &dp6m_ptr->u.ic.S_Status);
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        if (prot_ver != PROTOCOL_VERSION) {
            printk("GDT-PCI: Illegal protocol version\n");
            iounmap(ha->brd);
            return 0;
        }

        ha->type = GDT_PCIMPR;
        ha->ic_all_size = sizeof(dp6m_ptr->u);
        
        /* special command to controller BIOS */
1250 1251 1252 1253 1254 1255
        writel(0x00, &dp6m_ptr->u.ic.S_Info[0]);
        writel(0x00, &dp6m_ptr->u.ic.S_Info[1]);
        writel(0x00, &dp6m_ptr->u.ic.S_Info[2]);
        writel(0x00, &dp6m_ptr->u.ic.S_Info[3]);
        writeb(0xfe, &dp6m_ptr->u.ic.S_Cmd_Indx);
        writeb(1, &dp6m_ptr->i960r.ldoor_reg);
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        retries = INIT_RETRIES;
        gdth_delay(20);
1258
        while (readb(&dp6m_ptr->u.ic.S_Status) != 0xfe) {
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            if (--retries == 0) {
                printk("GDT-PCI: Initialization error\n");
                iounmap(ha->brd);
                return 0;
            }
            gdth_delay(1);
        }
1266
        writeb(0, &dp6m_ptr->u.ic.S_Status);
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        /* read FW version to detect 64-bit DMA support */
1269 1270
        writeb(0xfd, &dp6m_ptr->u.ic.S_Cmd_Indx);
        writeb(1, &dp6m_ptr->i960r.ldoor_reg);
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        retries = INIT_RETRIES;
        gdth_delay(20);
1273
        while (readb(&dp6m_ptr->u.ic.S_Status) != 0xfd) {
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            if (--retries == 0) {
                printk("GDT-PCI: Initialization error (DEINIT failed)\n");
                iounmap(ha->brd);
                return 0;
            }
            gdth_delay(1);
        }
1281 1282
        prot_ver = (unchar)(readl(&dp6m_ptr->u.ic.S_Info[0]) >> 16);
        writeb(0, &dp6m_ptr->u.ic.S_Status);
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        if (prot_ver < 0x2b)      /* FW < x.43: no 64-bit DMA support */
            ha->dma64_support = 0;
        else 
            ha->dma64_support = 1;
    }

    return 1;
}
1291
#endif /* CONFIG_PCI */
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/* controller protocol functions */

1295
static void __init gdth_enable_int(gdth_ha_str *ha)
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{
    ulong flags;
    gdt2_dpram_str __iomem *dp2_ptr;
    gdt6_dpram_str __iomem *dp6_ptr;
    gdt6m_dpram_str __iomem *dp6m_ptr;

1302
    TRACE(("gdth_enable_int() hanum %d\n",ha->hanum));
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    spin_lock_irqsave(&ha->smp_lock, flags);

    if (ha->type == GDT_EISA) {
        outb(0xff, ha->bmic + EDOORREG);
        outb(0xff, ha->bmic + EDENABREG);
        outb(0x01, ha->bmic + EINTENABREG);
    } else if (ha->type == GDT_ISA) {
        dp2_ptr = ha->brd;
1311 1312 1313
        writeb(1, &dp2_ptr->io.irqdel);
        writeb(0, &dp2_ptr->u.ic.Cmd_Index);
        writeb(1, &dp2_ptr->io.irqen);
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    } else if (ha->type == GDT_PCI) {
        dp6_ptr = ha->brd;
1316 1317 1318
        writeb(1, &dp6_ptr->io.irqdel);
        writeb(0, &dp6_ptr->u.ic.Cmd_Index);
        writeb(1, &dp6_ptr->io.irqen);
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    } else if (ha->type == GDT_PCINEW) {
        outb(0xff, PTR2USHORT(&ha->plx->edoor_reg));
        outb(0x03, PTR2USHORT(&ha->plx->control1));
    } else if (ha->type == GDT_PCIMPR) {
        dp6m_ptr = ha->brd;
1324 1325
        writeb(0xff, &dp6m_ptr->i960r.edoor_reg);
        writeb(readb(&dp6m_ptr->i960r.edoor_en_reg) & ~4,
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                    &dp6m_ptr->i960r.edoor_en_reg);
    }
    spin_unlock_irqrestore(&ha->smp_lock, flags);
}

1331
/* return IStatus if interrupt was from this card else 0 */
1332
static unchar gdth_get_status(gdth_ha_str *ha)
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{
1334 1335
    unchar IStatus = 0;

1336
    TRACE(("gdth_get_status() irq %d ctr_count %d\n", ha->irq, gdth_ctr_count));
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        if (ha->type == GDT_EISA)
1339
            IStatus = inb((ushort)ha->bmic + EDOORREG);
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        else if (ha->type == GDT_ISA)
1341
            IStatus =
1342
                readb(&((gdt2_dpram_str __iomem *)ha->brd)->u.ic.Cmd_Index);
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        else if (ha->type == GDT_PCI)
1344
            IStatus =
1345
                readb(&((gdt6_dpram_str __iomem *)ha->brd)->u.ic.Cmd_Index);
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        else if (ha->type == GDT_PCINEW) 
1347
            IStatus = inb(PTR2USHORT(&ha->plx->edoor_reg));
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        else if (ha->type == GDT_PCIMPR)
1349
            IStatus =
1350
                readb(&((gdt6m_dpram_str __iomem *)ha->brd)->i960r.edoor_reg);
1351 1352

        return IStatus;
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}
1354

1355
static int gdth_test_busy(gdth_ha_str *ha)
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{
    register int gdtsema0 = 0;

1359 1360
    TRACE(("gdth_test_busy() hanum %d\n", ha->hanum));

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    if (ha->type == GDT_EISA)
        gdtsema0 = (int)inb(ha->bmic + SEMA0REG);
    else if (ha->type == GDT_ISA)
1364
        gdtsema0 = (int)readb(&((gdt2_dpram_str __iomem *)ha->brd)->u.ic.Sema0);
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    else if (ha->type == GDT_PCI)
1366
        gdtsema0 = (int)readb(&((gdt6_dpram_str __iomem *)ha->brd)->u.ic.Sema0);
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    else if (ha->type == GDT_PCINEW) 
        gdtsema0 = (int)inb(PTR2USHORT(&ha->plx->sema0_reg));
    else if (ha->type == GDT_PCIMPR)
        gdtsema0 = 
1371
            (int)readb(&((gdt6m_dpram_str __iomem *)ha->brd)->i960r.sema0_reg);
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    return (gdtsema0 & 1);
}


1377
static int gdth_get_cmd_index(gdth_ha_str *ha)
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{
    int i;

1381
    TRACE(("gdth_get_cmd_index() hanum %d\n", ha->hanum));
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    for (i=0; i<GDTH_MAXCMDS; ++i) {
        if (ha->cmd_tab[i].cmnd == UNUSED_CMND) {
            ha->cmd_tab[i].cmnd = ha->pccb->RequestBuffer;
            ha->cmd_tab[i].service = ha->pccb->Service;
            ha->pccb->CommandIndex = (ulong32)i+2;
            return (i+2);
        }
    }
    return 0;
}


1395
static void gdth_set_sema0(gdth_ha_str *ha)
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{
1397
    TRACE(("gdth_set_sema0() hanum %d\n", ha->hanum));
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    if (ha->type == GDT_EISA) {
        outb(1, ha->bmic + SEMA0REG);
    } else if (ha->type == GDT_ISA) {
1402
        writeb(1, &((gdt2_dpram_str __iomem *)ha->brd)->u.ic.Sema0);
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    } else if (ha->type == GDT_PCI) {
1404
        writeb(1, &((gdt6_dpram_str __iomem *)ha->brd)->u.ic.Sema0);
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    } else if (ha->type == GDT_PCINEW) { 
        outb(1, PTR2USHORT(&ha->plx->sema0_reg));
    } else if (ha->type == GDT_PCIMPR) {
1408
        writeb(1, &((gdt6m_dpram_str __iomem *)ha->brd)->i960r.sema0_reg);
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    }
}


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static void gdth_copy_command(gdth_ha_str *ha)
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{
    register gdth_cmd_str *cmd_ptr;
    register gdt6m_dpram_str __iomem *dp6m_ptr;
    register gdt6c_dpram_str __iomem *dp6c_ptr;
    gdt6_dpram_str __iomem *dp6_ptr;
    gdt2_dpram_str __iomem *dp2_ptr;
    ushort cp_count,dp_offset,cmd_no;
    
1422
    TRACE(("gdth_copy_command() hanum %d\n", ha->hanum));
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    cp_count = ha->cmd_len;
    dp_offset= ha->cmd_offs_dpmem;
    cmd_no   = ha->cmd_cnt;
    cmd_ptr  = ha->pccb;

    ++ha->cmd_cnt;                                                      
    if (ha->type == GDT_EISA)
        return;                                 /* no DPMEM, no copy */

    /* set cpcount dword aligned */
    if (cp_count & 3)
        cp_count += (4 - (cp_count & 3));

    ha->cmd_offs_dpmem += cp_count;
    
    /* set offset and service, copy command to DPMEM */
    if (ha->type == GDT_ISA) {
        dp2_ptr = ha->brd;
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        writew(dp_offset + DPMEM_COMMAND_OFFSET,
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                    &dp2_ptr->u.ic.comm_queue[cmd_no].offset);
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        writew((ushort)cmd_ptr->Service,
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                    &dp2_ptr->u.ic.comm_queue[cmd_no].serv_id);
        memcpy_toio(&dp2_ptr->u.ic.gdt_dpr_cmd[dp_offset],cmd_ptr,cp_count);
    } else if (ha->type == GDT_PCI) {
        dp6_ptr = ha->brd;
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        writew(dp_offset + DPMEM_COMMAND_OFFSET,
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                    &dp6_ptr->u.ic.comm_queue[cmd_no].offset);
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        writew((ushort)cmd_ptr->Service,
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                    &dp6_ptr->u.ic.comm_queue[cmd_no].serv_id);
        memcpy_toio(&dp6_ptr->u.ic.gdt_dpr_cmd[dp_offset],cmd_ptr,cp_count);
    } else if (ha->type == GDT_PCINEW) {
        dp6c_ptr = ha->brd;
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        writew(dp_offset + DPMEM_COMMAND_OFFSET,
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                    &dp6c_ptr->u.ic.comm_queue[cmd_no].offset);
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        writew((ushort)cmd_ptr->Service,
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                    &dp6c_ptr->u.ic.comm_queue[cmd_no].serv_id);
        memcpy_toio(&dp6c_ptr->u.ic.gdt_dpr_cmd[dp_offset],cmd_ptr,cp_count);
    } else if (ha->type == GDT_PCIMPR) {
        dp6m_ptr = ha->brd;
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        writew(dp_offset + DPMEM_COMMAND_OFFSET,
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                    &dp6m_ptr->u.ic.comm_queue[cmd_no].offset);
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        writew((ushort)cmd_ptr->Service,
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                    &dp6m_ptr->u.ic.comm_queue[cmd_no].serv_id);
        memcpy_toio(&dp6m_ptr->u.ic.gdt_dpr_cmd[dp_offset],cmd_ptr,cp_count);
    }
}


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static void gdth_release_event(gdth_ha_str *ha)
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{
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    TRACE(("gdth_release_event() hanum %d\n", ha->hanum));
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#ifdef GDTH_STATISTICS
    {
        ulong32 i,j;
        for (i=0,j=0; j<GDTH_MAXCMDS; ++j) {
            if (ha->cmd_tab[j].cmnd != UNUSED_CMND)
                ++i;
        }
        if (max_index < i) {
            max_index = i;
            TRACE3(("GDT: max_index = %d\n",(ushort)i));
        }
    }
#endif

    if (ha->pccb->OpCode == GDT_INIT)
        ha->pccb->Service |= 0x80;

    if (ha->type == GDT_EISA) {
        if (ha->pccb->OpCode == GDT_INIT)               /* store DMA buffer */
            outl(ha->ccb_phys, ha->bmic + MAILBOXREG);
        outb(ha->pccb->Service, ha->bmic + LDOORREG);
    } else if (ha->type == GDT_ISA) {
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        writeb(0, &((gdt2_dpram_str __iomem *)ha->brd)->io.event);
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    } else if (ha->type == GDT_PCI) {
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        writeb(0, &((gdt6_dpram_str __iomem *)ha->brd)->io.event);
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    } else if (ha->type == GDT_PCINEW) { 
        outb(1, PTR2USHORT(&ha->plx->ldoor_reg));
    } else if (ha->type == GDT_PCIMPR) {
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        writeb(1, &((gdt6m_dpram_str __iomem *)ha->brd)->i960r.ldoor_reg);
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    }
}

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static int gdth_wait(gdth_ha_str *ha, int index, ulong32 time)
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{
    int answer_found = FALSE;
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    int wait_index = 0;
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    TRACE(("gdth_wait() hanum %d index %d time %d\n", ha->hanum, index, time));
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    if (index == 0)
        return 1;                               /* no wait required */

    do {
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	__gdth_interrupt(ha, true, &wait_index);
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        if (wait_index == index) {
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            answer_found = TRUE;
            break;
        }
        gdth_delay(1);
    } while (--time);
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    while (gdth_test_busy(ha))
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        gdth_delay(0);

    return (answer_found);
}


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static int gdth_internal_cmd(gdth_ha_str *ha, unchar service, ushort opcode,
                                            ulong32 p1, ulong64 p2, ulong64 p3)
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{
    register gdth_cmd_str *cmd_ptr;
    int retries,index;

    TRACE2(("gdth_internal_cmd() service %d opcode %d\n",service,opcode));

    cmd_ptr = ha->pccb;
    memset((char*)cmd_ptr,0,sizeof(gdth_cmd_str));

    /* make command  */
    for (retries = INIT_RETRIES;;) {
        cmd_ptr->Service          = service;
        cmd_ptr->RequestBuffer    = INTERNAL_CMND;
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        if (!(index=gdth_get_cmd_index(ha))) {
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            TRACE(("GDT: No free command index found\n"));
            return 0;
        }
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        gdth_set_sema0(ha);
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        cmd_ptr->OpCode           = opcode;
        cmd_ptr->BoardNode        = LOCALBOARD;
        if (service == CACHESERVICE) {
            if (opcode == GDT_IOCTL) {
                cmd_ptr->u.ioctl.subfunc = p1;
                cmd_ptr->u.ioctl.channel = (ulong32)p2;
                cmd_ptr->u.ioctl.param_size = (ushort)p3;
                cmd_ptr->u.ioctl.p_param = ha->scratch_phys;
            } else {
                if (ha->cache_feat & GDT_64BIT) {
                    cmd_ptr->u.cache64.DeviceNo = (ushort)p1;
                    cmd_ptr->u.cache64.BlockNo  = p2;
                } else {
                    cmd_ptr->u.cache.DeviceNo = (ushort)p1;
                    cmd_ptr->u.cache.BlockNo  = (ulong32)p2;
                }
            }
        } else if (service == SCSIRAWSERVICE) {
            if (ha->raw_feat & GDT_64BIT) {
                cmd_ptr->u.raw64.direction  = p1;
                cmd_ptr->u.raw64.bus        = (unchar)p2;
                cmd_ptr->u.raw64.target     = (unchar)p3;
                cmd_ptr->u.raw64.lun        = (unchar)(p3 >> 8);
            } else {
                cmd_ptr->u.raw.direction  = p1;
                cmd_ptr->u.raw.bus        = (unchar)p2;
                cmd_ptr->u.raw.target     = (unchar)p3;
                cmd_ptr->u.raw.lun        = (unchar)(p3 >> 8);
            }
        } else if (service == SCREENSERVICE) {
            if (opcode == GDT_REALTIME) {
                *(ulong32 *)&cmd_ptr->u.screen.su.data[0] = p1;
                *(ulong32 *)&cmd_ptr->u.screen.su.data[4] = (ulong32)p2;
                *(ulong32 *)&cmd_ptr->u.screen.su.data[8] = (ulong32)p3;
            }
        }
        ha->cmd_len          = sizeof(gdth_cmd_str);
        ha->cmd_offs_dpmem   = 0;
        ha->cmd_cnt          = 0;
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        gdth_copy_command(ha);
        gdth_release_event(ha);
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        gdth_delay(20);
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        if (!gdth_wait(ha, index, INIT_TIMEOUT)) {
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            printk("GDT: Initialization error (timeout service %d)\n",service);
            return 0;
        }
        if (ha->status != S_BSY || --retries == 0)
            break;
        gdth_delay(1);   
    }   
    
    return (ha->status != S_OK ? 0:1);
}
    

/* search for devices */

1611
static int __init gdth_search_drives(gdth_ha_str *ha)
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{
    ushort cdev_cnt, i;
    int ok;
    ulong32 bus_no, drv_cnt, drv_no, j;
    gdth_getch_str *chn;
    gdth_drlist_str *drl;
    gdth_iochan_str *ioc;
    gdth_raw_iochan_str *iocr;
    gdth_arcdl_str *alst;
    gdth_alist_str *alst2;
    gdth_oem_str_ioctl *oemstr;
#ifdef INT_COAL
    gdth_perf_modes *pmod;
#endif

#ifdef GDTH_RTC
    unchar rtc[12];
    ulong flags;
#endif     
   
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    TRACE(("gdth_search_drives() hanum %d\n", ha->hanum));
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    ok = 0;

    /* initialize controller services, at first: screen service */
    ha->screen_feat = 0;
    if (!force_dma32) {
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        ok = gdth_internal_cmd(ha, SCREENSERVICE, GDT_X_INIT_SCR, 0, 0, 0);
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        if (ok)
            ha->screen_feat = GDT_64BIT;
    }
    if (force_dma32 || (!ok && ha->status == (ushort)S_NOFUNC))
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        ok = gdth_internal_cmd(ha, SCREENSERVICE, GDT_INIT, 0, 0, 0);
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    if (!ok) {
        printk("GDT-HA %d: Initialization error screen service (code %d)\n",
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               ha->hanum, ha->status);
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        return 0;
    }
    TRACE2(("gdth_search_drives(): SCREENSERVICE initialized\n"));

#ifdef GDTH_RTC
    /* read realtime clock info, send to controller */
    /* 1. wait for the falling edge of update flag */
    spin_lock_irqsave(&rtc_lock, flags);
    for (j = 0; j < 1000000; ++j)
        if (CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP)
            break;
    for (j = 0; j < 1000000; ++j)
        if (!(CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP))
            break;
    /* 2. read info */
    do {
        for (j = 0; j < 12; ++j) 
            rtc[j] = CMOS_READ(j);
    } while (rtc[0] != CMOS_READ(0));
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    spin_unlock_irqrestore(&rtc_lock, flags);
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    TRACE2(("gdth_search_drives(): RTC: %x/%x/%x\n",*(ulong32 *)&rtc[0],
            *(ulong32 *)&rtc[4], *(ulong32 *)&rtc[8]));
    /* 3. send to controller firmware */
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    gdth_internal_cmd(ha, SCREENSERVICE, GDT_REALTIME, *(ulong32 *)&rtc[0],
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                      *(ulong32 *)&rtc[4], *(ulong32 *)&rtc[8]);
#endif  
 
    /* unfreeze all IOs */
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    gdth_internal_cmd(ha, CACHESERVICE, GDT_UNFREEZE_IO, 0, 0, 0);
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    /* initialize cache service */
    ha->cache_feat = 0;
    if (!force_dma32) {
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        ok = gdth_internal_cmd(ha, CACHESERVICE, GDT_X_INIT_HOST, LINUX_OS,
                                                                         0, 0);
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        if (ok)
            ha->cache_feat = GDT_64BIT;
    }
    if (force_dma32 || (!ok && ha->status == (ushort)S_NOFUNC))
1686
        ok = gdth_internal_cmd(ha, CACHESERVICE, GDT_INIT, LINUX_OS, 0, 0);
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    if (!ok) {
        printk("GDT-HA %d: Initialization error cache service (code %d)\n",
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               ha->hanum, ha->status);
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        return 0;
    }
    TRACE2(("gdth_search_drives(): CACHESERVICE initialized\n"));
    cdev_cnt = (ushort)ha->info;
    ha->fw_vers = ha->service;

#ifdef INT_COAL
    if (ha->type == GDT_PCIMPR) {
        /* set perf. modes */
        pmod = (gdth_perf_modes *)ha->pscratch;
        pmod->version          = 1;
        pmod->st_mode          = 1;    /* enable one status buffer */
        *((ulong64 *)&pmod->st_buff_addr1) = ha->coal_stat_phys;
        pmod->st_buff_indx1    = COALINDEX;
        pmod->st_buff_addr2    = 0;
        pmod->st_buff_u_addr2  = 0;
        pmod->st_buff_indx2    = 0;
        pmod->st_buff_size     = sizeof(gdth_coal_status) * MAXOFFSETS;
        pmod->cmd_mode         = 0;    // disable all cmd buffers
        pmod->cmd_buff_addr1   = 0;
        pmod->cmd_buff_u_addr1 = 0;
        pmod->cmd_buff_indx1   = 0;
        pmod->cmd_buff_addr2   = 0;
        pmod->cmd_buff_u_addr2 = 0;
        pmod->cmd_buff_indx2   = 0;
        pmod->cmd_buff_size    = 0;
        pmod->reserved1        = 0;            
        pmod->reserved2        = 0;            
1718
        if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, SET_PERF_MODES,
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                              INVALID_CHANNEL,sizeof(gdth_perf_modes))) {
1720
            printk("GDT-HA %d: Interrupt coalescing activated\n", ha->hanum);
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        }
    }
#endif

    /* detect number of buses - try new IOCTL */
    iocr = (gdth_raw_iochan_str *)ha->pscratch;
    iocr->hdr.version        = 0xffffffff;
    iocr->hdr.list_entries   = MAXBUS;
    iocr->hdr.first_chan     = 0;
    iocr->hdr.last_chan      = MAXBUS-1;
    iocr->hdr.list_offset    = GDTOFFSOF(gdth_raw_iochan_str, list[0]);
1732
    if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, IOCHAN_RAW_DESC,
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                          INVALID_CHANNEL,sizeof(gdth_raw_iochan_str))) {
        TRACE2(("IOCHAN_RAW_DESC supported!\n"));
        ha->bus_cnt = iocr->hdr.chan_count;
        for (bus_no = 0; bus_no < ha->bus_cnt; ++bus_no) {
            if (iocr->list[bus_no].proc_id < MAXID)
                ha->bus_id[bus_no] = iocr->list[bus_no].proc_id;
            else
                ha->bus_id[bus_no] = 0xff;
        }
    } else {
        /* old method */
        chn = (gdth_getch_str *)ha->pscratch;
        for (bus_no = 0; bus_no < MAXBUS; ++bus_no) {
            chn->channel_no = bus_no;
1747
            if (!gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
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                                   SCSI_CHAN_CNT | L_CTRL_PATTERN,
                                   IO_CHANNEL | INVALID_CHANNEL,
                                   sizeof(gdth_getch_str))) {
                if (bus_no == 0) {
                    printk("GDT-HA %d: Error detecting channel count (0x%x)\n",
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                           ha->hanum, ha->status);
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                    return 0;
                }
                break;
            }
            if (chn->siop_id < MAXID)
                ha->bus_id[bus_no] = chn->siop_id;
            else
                ha->bus_id[bus_no] = 0xff;
        }       
        ha->bus_cnt = (unchar)bus_no;
    }
    TRACE2(("gdth_search_drives() %d channels\n",ha->bus_cnt));

    /* read cache configuration */
1768
    if (!gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, CACHE_INFO,
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                           INVALID_CHANNEL,sizeof(gdth_cinfo_str))) {
        printk("GDT-HA %d: Initialization error cache service (code %d)\n",
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               ha->hanum, ha->status);
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        return 0;
    }
    ha->cpar = ((gdth_cinfo_str *)ha->pscratch)->cpar;
    TRACE2(("gdth_search_drives() cinfo: vs %x sta %d str %d dw %d b %d\n",
            ha->cpar.version,ha->cpar.state,ha->cpar.strategy,
            ha->cpar.write_back,ha->cpar.block_size));

    /* read board info and features */
    ha->more_proc = FALSE;
1781
    if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, BOARD_INFO,
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                          INVALID_CHANNEL,sizeof(gdth_binfo_str))) {
        memcpy(&ha->binfo, (gdth_binfo_str *)ha->pscratch,
               sizeof(gdth_binfo_str));
1785
        if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, BOARD_FEATURES,
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                              INVALID_CHANNEL,sizeof(gdth_bfeat_str))) {
            TRACE2(("BOARD_INFO/BOARD_FEATURES supported\n"));
            ha->bfeat = *(gdth_bfeat_str *)ha->pscratch;
            ha->more_proc = TRUE;
        }
    } else {
        TRACE2(("BOARD_INFO requires firmware >= 1.10/2.08\n"));
1793
        strcpy(ha->binfo.type_string, gdth_ctr_name(ha));
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    }
    TRACE2(("Controller name: %s\n",ha->binfo.type_string));

    /* read more informations */
    if (ha->more_proc) {
        /* physical drives, channel addresses */
        ioc = (gdth_iochan_str *)ha->pscratch;
        ioc->hdr.version        = 0xffffffff;
        ioc->hdr.list_entries   = MAXBUS;
        ioc->hdr.first_chan     = 0;
        ioc->hdr.last_chan      = MAXBUS-1;
        ioc->hdr.list_offset    = GDTOFFSOF(gdth_iochan_str, list[0]);
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        if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, IOCHAN_DESC,
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                              INVALID_CHANNEL,sizeof(gdth_iochan_str))) {
            for (bus_no = 0; bus_no < ha->bus_cnt; ++bus_no) {
                ha->raw[bus_no].address = ioc->list[bus_no].address;
                ha->raw[bus_no].local_no = ioc->list[bus_no].local_no;
            }
        } else {
            for (bus_no = 0; bus_no < ha->bus_cnt; ++bus_no) {
                ha->raw[bus_no].address = IO_CHANNEL;
                ha->raw[bus_no].local_no = bus_no;
            }
        }
        for (bus_no = 0; bus_no < ha->bus_cnt; ++bus_no) {
            chn = (gdth_getch_str *)ha->pscratch;
            chn->channel_no = ha->raw[bus_no].local_no;
1821
            if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
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                                  SCSI_CHAN_CNT | L_CTRL_PATTERN,
                                  ha->raw[bus_no].address | INVALID_CHANNEL,
                                  sizeof(gdth_getch_str))) {
                ha->raw[bus_no].pdev_cnt = chn->drive_cnt;
                TRACE2(("Channel %d: %d phys. drives\n",
                        bus_no,chn->drive_cnt));
            }
            if (ha->raw[bus_no].pdev_cnt > 0) {
                drl = (gdth_drlist_str *)ha->pscratch;
                drl->sc_no = ha->raw[bus_no].local_no;
                drl->sc_cnt = ha->raw[bus_no].pdev_cnt;
1833
                if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
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                                      SCSI_DR_LIST | L_CTRL_PATTERN,
                                      ha->raw[bus_no].address | INVALID_CHANNEL,
                                      sizeof(gdth_drlist_str))) {
                    for (j = 0; j < ha->raw[bus_no].pdev_cnt; ++j) 
                        ha->raw[bus_no].id_list[j] = drl->sc_list[j];
                } else {
                    ha->raw[bus_no].pdev_cnt = 0;
                }
            }
        }

        /* logical drives */
1846
        if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, CACHE_DRV_CNT,
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                              INVALID_CHANNEL,sizeof(ulong32))) {
            drv_cnt = *(ulong32 *)ha->pscratch;
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            if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL, CACHE_DRV_LIST,
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                                  INVALID_CHANNEL,drv_cnt * sizeof(ulong32))) {
                for (j = 0; j < drv_cnt; ++j) {
                    drv_no = ((ulong32 *)ha->pscratch)[j];
                    if (drv_no < MAX_LDRIVES) {
                        ha->hdr[drv_no].is_logdrv = TRUE;
                        TRACE2(("Drive %d is log. drive\n",drv_no));
                    }
                }
            }
            alst = (gdth_arcdl_str *)ha->pscratch;
            alst->entries_avail = MAX_LDRIVES;
            alst->first_entry = 0;
            alst->list_offset = GDTOFFSOF(gdth_arcdl_str, list[0]);
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            if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
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                                  ARRAY_DRV_LIST2 | LA_CTRL_PATTERN, 
                                  INVALID_CHANNEL, sizeof(gdth_arcdl_str) +
                                  (alst->entries_avail-1) * sizeof(gdth_alist_str))) { 
                for (j = 0; j < alst->entries_init; ++j) {
                    ha->hdr[j].is_arraydrv = alst->list[j].is_arrayd;
                    ha->hdr[j].is_master = alst->list[j].is_master;
                    ha->hdr[j].is_parity = alst->list[j].is_parity;
                    ha->hdr[j].is_hotfix = alst->list[j].is_hotfix;
                    ha->hdr[j].master_no = alst->list[j].cd_handle;
                }
1874
            } else if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
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                                         ARRAY_DRV_LIST | LA_CTRL_PATTERN,
                                         0, 35 * sizeof(gdth_alist_str))) {
                for (j = 0; j < 35; ++j) {
                    alst2 = &((gdth_alist_str *)ha->pscratch)[j];
                    ha->hdr[j].is_arraydrv = alst2->is_arrayd;
                    ha->hdr[j].is_master = alst2->is_master;
                    ha->hdr[j].is_parity = alst2->is_parity;
                    ha->hdr[j].is_hotfix = alst2->is_hotfix;
                    ha->hdr[j].master_no = alst2->cd_handle;
                }
            }
        }
    }       
                                  
    /* initialize raw service */
    ha->raw_feat = 0;
    if (!force_dma32) {
1892
        ok = gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_X_INIT_RAW, 0, 0, 0);
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        if (ok)
            ha->raw_feat = GDT_64BIT;
    }
    if (force_dma32 || (!ok && ha->status == (ushort)S_NOFUNC))
1897
        ok = gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_INIT, 0, 0, 0);
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    if (!ok) {
        printk("GDT-HA %d: Initialization error raw service (code %d)\n",
1900
               ha->hanum, ha->status);
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        return 0;
    }
    TRACE2(("gdth_search_drives(): RAWSERVICE initialized\n"));

    /* set/get features raw service (scatter/gather) */
1906 1907
    if (gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_SET_FEAT, SCATTER_GATHER,
                          0, 0)) {
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        TRACE2(("gdth_search_drives(): set features RAWSERVICE OK\n"));
1909
        if (gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_GET_FEAT, 0, 0, 0)) {
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            TRACE2(("gdth_search_dr(): get feat RAWSERVICE %d\n",
                    ha->info));
            ha->raw_feat |= (ushort)ha->info;
        }
    } 

    /* set/get features cache service (equal to raw service) */
1917
    if (gdth_internal_cmd(ha, CACHESERVICE, GDT_SET_FEAT, 0,
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                          SCATTER_GATHER,0)) {
        TRACE2(("gdth_search_drives(): set features CACHESERVICE OK\n"));
1920
        if (gdth_internal_cmd(ha, CACHESERVICE, GDT_GET_FEAT, 0, 0, 0)) {
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            TRACE2(("gdth_search_dr(): get feat CACHESERV. %d\n",
                    ha->info));
            ha->cache_feat |= (ushort)ha->info;
        }
    }

    /* reserve drives for raw service */
    if (reserve_mode != 0) {
1929
        gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_RESERVE_ALL,
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                          reserve_mode == 1 ? 1 : 3, 0, 0);
        TRACE2(("gdth_search_drives(): RESERVE_ALL code %d\n", 
                ha->status));
    }
    for (i = 0; i < MAX_RES_ARGS; i += 4) {
1935
        if (reserve_list[i] == ha->hanum && reserve_list[i+1] < ha->bus_cnt &&
L
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            reserve_list[i+2] < ha->tid_cnt && reserve_list[i+3] < MAXLUN) {
            TRACE2(("gdth_search_drives(): reserve ha %d bus %d id %d lun %d\n",
                    reserve_list[i], reserve_list[i+1],
                    reserve_list[i+2], reserve_list[i+3]));
1940
            if (!gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_RESERVE, 0,
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                                   reserve_list[i+1], reserve_list[i+2] | 
                                   (reserve_list[i+3] << 8))) {
                printk("GDT-HA %d: Error raw service (RESERVE, code %d)\n",
1944
                       ha->hanum, ha->status);
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             }
        }
    }

    /* Determine OEM string using IOCTL */
    oemstr = (gdth_oem_str_ioctl *)ha->pscratch;
    oemstr->params.ctl_version = 0x01;
    oemstr->params.buffer_size = sizeof(oemstr->text);
1953
    if (gdth_internal_cmd(ha, CACHESERVICE, GDT_IOCTL,
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                          CACHE_READ_OEM_STRING_RECORD,INVALID_CHANNEL,
                          sizeof(gdth_oem_str_ioctl))) {
        TRACE2(("gdth_search_drives(): CACHE_READ_OEM_STRING_RECORD OK\n"));
        printk("GDT-HA %d: Vendor: %s Name: %s\n",
1958
               ha->hanum, oemstr->text.oem_company_name, ha->binfo.type_string);
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        /* Save the Host Drive inquiry data */
        strlcpy(ha->oem_name,oemstr->text.scsi_host_drive_inquiry_vendor_id,
                sizeof(ha->oem_name));
    } else {
        /* Old method, based on PCI ID */
        TRACE2(("gdth_search_drives(): CACHE_READ_OEM_STRING_RECORD failed\n"));
        printk("GDT-HA %d: Name: %s\n",
1966
               ha->hanum, ha->binfo.type_string);
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        if (ha->oem_id == OEM_ID_INTEL)
            strlcpy(ha->oem_name,"Intel  ", sizeof(ha->oem_name));
        else
            strlcpy(ha->oem_name,"ICP    ", sizeof(ha->oem_name));
    }

    /* scanning for host drives */
    for (i = 0; i < cdev_cnt; ++i) 
1975
        gdth_analyse_hdrive(ha, i);
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    TRACE(("gdth_search_drives() OK\n"));
    return 1;
}

1981
static int gdth_analyse_hdrive(gdth_ha_str *ha, ushort hdrive)
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Linus Torvalds 已提交
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{
    ulong32 drv_cyls;
    int drv_hds, drv_secs;

1986
    TRACE(("gdth_analyse_hdrive() hanum %d drive %d\n", ha->hanum, hdrive));
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    if (hdrive >= MAX_HDRIVES)
        return 0;

1990
    if (!gdth_internal_cmd(ha, CACHESERVICE, GDT_INFO, hdrive, 0, 0))
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        return 0;
    ha->hdr[hdrive].present = TRUE;
    ha->hdr[hdrive].size = ha->info;
   
    /* evaluate mapping (sectors per head, heads per cylinder) */
    ha->hdr[hdrive].size &= ~SECS32;
    if (ha->info2 == 0) {
        gdth_eval_mapping(ha->hdr[hdrive].size,&drv_cyls,&drv_hds,&drv_secs);
    } else {
        drv_hds = ha->info2 & 0xff;
        drv_secs = (ha->info2 >> 8) & 0xff;
        drv_cyls = (ulong32)ha->hdr[hdrive].size / drv_hds / drv_secs;
    }
    ha->hdr[hdrive].heads = (unchar)drv_hds;
    ha->hdr[hdrive].secs  = (unchar)drv_secs;
    /* round size */
    ha->hdr[hdrive].size  = drv_cyls * drv_hds * drv_secs;
    
    if (ha->cache_feat & GDT_64BIT) {
2010
        if (gdth_internal_cmd(ha, CACHESERVICE, GDT_X_INFO, hdrive, 0, 0)
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            && ha->info2 != 0) {
            ha->hdr[hdrive].size = ((ulong64)ha->info2 << 32) | ha->info;
        }
    }
    TRACE2(("gdth_search_dr() cdr. %d size %d hds %d scs %d\n",
            hdrive,ha->hdr[hdrive].size,drv_hds,drv_secs));

    /* get informations about device */
2019
    if (gdth_internal_cmd(ha, CACHESERVICE, GDT_DEVTYPE, hdrive, 0, 0)) {
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        TRACE2(("gdth_search_dr() cache drive %d devtype %d\n",
                hdrive,ha->info));
        ha->hdr[hdrive].devtype = (ushort)ha->info;
    }

    /* cluster info */
2026
    if (gdth_internal_cmd(ha, CACHESERVICE, GDT_CLUST_INFO, hdrive, 0, 0)) {
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        TRACE2(("gdth_search_dr() cache drive %d cluster info %d\n",
                hdrive,ha->info));
        if (!shared_access)
            ha->hdr[hdrive].cluster_type = (unchar)ha->info;
    }

    /* R/W attributes */
2034
    if (gdth_internal_cmd(ha, CACHESERVICE, GDT_RW_ATTRIBS, hdrive, 0, 0)) {
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        TRACE2(("gdth_search_dr() cache drive %d r/w attrib. %d\n",
                hdrive,ha->info));
        ha->hdr[hdrive].rw_attribs = (unchar)ha->info;
    }

    return 1;
}


/* command queueing/sending functions */

2046
static void gdth_putq(gdth_ha_str *ha, Scsi_Cmnd *scp, unchar priority)
L
Linus Torvalds 已提交
2047
{
2048
    struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
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    register Scsi_Cmnd *pscp;
    register Scsi_Cmnd *nscp;
    ulong flags;
    unchar b, t;

    TRACE(("gdth_putq() priority %d\n",priority));
    spin_lock_irqsave(&ha->smp_lock, flags);

2057
    if (!cmndinfo->internal_command) {
2058
        cmndinfo->priority = priority;
C
Christoph Hellwig 已提交
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        b = scp->device->channel;
2060 2061 2062 2063 2064
        t = scp->device->id;
        if (priority >= DEFAULT_PRI) {
            if ((b != ha->virt_bus && ha->raw[BUS_L2P(ha,b)].lock) ||
                (b==ha->virt_bus && t<MAX_HDRIVES && ha->hdr[t].lock)) {
                TRACE2(("gdth_putq(): locked IO ->update_timeout()\n"));
2065
                cmndinfo->timeout = gdth_update_timeout(scp, 0);
2066
            }
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        }
    }

    if (ha->req_first==NULL) {
        ha->req_first = scp;                    /* queue was empty */
        scp->SCp.ptr = NULL;
    } else {                                    /* queue not empty */
        pscp = ha->req_first;
        nscp = (Scsi_Cmnd *)pscp->SCp.ptr;
        /* priority: 0-highest,..,0xff-lowest */
2077
        while (nscp && gdth_cmnd_priv(nscp)->priority <= priority) {
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            pscp = nscp;
            nscp = (Scsi_Cmnd *)pscp->SCp.ptr;
        }
        pscp->SCp.ptr = (char *)scp;
        scp->SCp.ptr  = (char *)nscp;
    }
    spin_unlock_irqrestore(&ha->smp_lock, flags);

#ifdef GDTH_STATISTICS
    flags = 0;
    for (nscp=ha->req_first; nscp; nscp=(Scsi_Cmnd*)nscp->SCp.ptr)
        ++flags;
    if (max_rq < flags) {
        max_rq = flags;
        TRACE3(("GDT: max_rq = %d\n",(ushort)max_rq));
    }
#endif
}

2097
static void gdth_next(gdth_ha_str *ha)
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{
    register Scsi_Cmnd *pscp;
    register Scsi_Cmnd *nscp;
    unchar b, t, l, firsttime;
    unchar this_cmd, next_cmd;
    ulong flags = 0;
    int cmd_index;

2106
    TRACE(("gdth_next() hanum %d\n", ha->hanum));
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    if (!gdth_polling) 
        spin_lock_irqsave(&ha->smp_lock, flags);

    ha->cmd_cnt = ha->cmd_offs_dpmem = 0;
    this_cmd = firsttime = TRUE;
    next_cmd = gdth_polling ? FALSE:TRUE;
    cmd_index = 0;

    for (nscp = pscp = ha->req_first; nscp; nscp = (Scsi_Cmnd *)nscp->SCp.ptr) {
2116
        struct gdth_cmndinfo *nscp_cmndinfo = gdth_cmnd_priv(nscp);
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        if (nscp != pscp && nscp != (Scsi_Cmnd *)pscp->SCp.ptr)
            pscp = (Scsi_Cmnd *)pscp->SCp.ptr;
2119
        if (!nscp_cmndinfo->internal_command) {
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Christoph Hellwig 已提交
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            b = nscp->device->channel;
2121 2122
            t = nscp->device->id;
            l = nscp->device->lun;
2123
            if (nscp_cmndinfo->priority >= DEFAULT_PRI) {
2124 2125 2126 2127 2128 2129
                if ((b != ha->virt_bus && ha->raw[BUS_L2P(ha,b)].lock) ||
                    (b == ha->virt_bus && t < MAX_HDRIVES && ha->hdr[t].lock))
                    continue;
            }
        } else
            b = t = l = 0;
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        if (firsttime) {
2132 2133
            if (gdth_test_busy(ha)) {        /* controller busy ? */
                TRACE(("gdth_next() controller %d busy !\n", ha->hanum));
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                if (!gdth_polling) {
                    spin_unlock_irqrestore(&ha->smp_lock, flags);
                    return;
                }
2138
                while (gdth_test_busy(ha))
L
Linus Torvalds 已提交
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                    gdth_delay(1);
            }   
            firsttime = FALSE;
        }

2144 2145 2146
        if (!nscp_cmndinfo->internal_command) {
        if (nscp_cmndinfo->phase == -1) {
            nscp_cmndinfo->phase = CACHESERVICE;           /* default: cache svc. */
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            if (nscp->cmnd[0] == TEST_UNIT_READY) {
                TRACE2(("TEST_UNIT_READY Bus %d Id %d LUN %d\n", 
                        b, t, l));
                /* TEST_UNIT_READY -> set scan mode */
                if ((ha->scan_mode & 0x0f) == 0) {
                    if (b == 0 && t == 0 && l == 0) {
                        ha->scan_mode |= 1;
                        TRACE2(("Scan mode: 0x%x\n", ha->scan_mode));
                    }
                } else if ((ha->scan_mode & 0x0f) == 1) {
                    if (b == 0 && ((t == 0 && l == 1) ||
                         (t == 1 && l == 0))) {
2159 2160
                        nscp_cmndinfo->OpCode = GDT_SCAN_START;
                        nscp_cmndinfo->phase = ((ha->scan_mode & 0x10 ? 1:0) << 8)
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                            | SCSIRAWSERVICE;
                        ha->scan_mode = 0x12;
                        TRACE2(("Scan mode: 0x%x (SCAN_START)\n", 
                                ha->scan_mode));
                    } else {
                        ha->scan_mode &= 0x10;
                        TRACE2(("Scan mode: 0x%x\n", ha->scan_mode));
                    }                   
                } else if (ha->scan_mode == 0x12) {
                    if (b == ha->bus_cnt && t == ha->tid_cnt-1) {
2171 2172
                        nscp_cmndinfo->phase = SCSIRAWSERVICE;
                        nscp_cmndinfo->OpCode = GDT_SCAN_END;
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                        ha->scan_mode &= 0x10;
                        TRACE2(("Scan mode: 0x%x (SCAN_END)\n", 
                                ha->scan_mode));
                    }
                }
            }
            if (b == ha->virt_bus && nscp->cmnd[0] != INQUIRY &&
                nscp->cmnd[0] != READ_CAPACITY && nscp->cmnd[0] != MODE_SENSE &&
                (ha->hdr[t].cluster_type & CLUSTER_DRIVE)) {
                /* always GDT_CLUST_INFO! */
2183
                nscp_cmndinfo->OpCode = GDT_CLUST_INFO;
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            }
        }
        }

2188 2189
        if (nscp_cmndinfo->OpCode != -1) {
            if ((nscp_cmndinfo->phase & 0xff) == CACHESERVICE) {
2190
                if (!(cmd_index=gdth_fill_cache_cmd(ha, nscp, t)))
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2191 2192
                    this_cmd = FALSE;
                next_cmd = FALSE;
2193
            } else if ((nscp_cmndinfo->phase & 0xff) == SCSIRAWSERVICE) {
2194
                if (!(cmd_index=gdth_fill_raw_cmd(ha, nscp, BUS_L2P(ha, b))))
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                    this_cmd = FALSE;
                next_cmd = FALSE;
            } else {
                memset((char*)nscp->sense_buffer,0,16);
                nscp->sense_buffer[0] = 0x70;
                nscp->sense_buffer[2] = NOT_READY;
                nscp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
2202 2203
                if (!nscp_cmndinfo->wait_for_completion)
                    nscp_cmndinfo->wait_for_completion++;
L
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2204
                else
2205
                    gdth_scsi_done(nscp);
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            }
2207
        } else if (gdth_cmnd_priv(nscp)->internal_command) {
2208
            if (!(cmd_index=gdth_special_cmd(ha, nscp)))
L
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                this_cmd = FALSE;
            next_cmd = FALSE;
        } else if (b != ha->virt_bus) {
            if (ha->raw[BUS_L2P(ha,b)].io_cnt[t] >= GDTH_MAX_RAW ||
2213
                !(cmd_index=gdth_fill_raw_cmd(ha, nscp, BUS_L2P(ha, b))))
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Linus Torvalds 已提交
2214 2215 2216 2217 2218 2219 2220
                this_cmd = FALSE;
            else 
                ha->raw[BUS_L2P(ha,b)].io_cnt[t]++;
        } else if (t >= MAX_HDRIVES || !ha->hdr[t].present || l != 0) {
            TRACE2(("Command 0x%x to bus %d id %d lun %d -> IGNORE\n",
                    nscp->cmnd[0], b, t, l));
            nscp->result = DID_BAD_TARGET << 16;
2221 2222
            if (!nscp_cmndinfo->wait_for_completion)
                nscp_cmndinfo->wait_for_completion++;
L
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2223
            else
2224
                gdth_scsi_done(nscp);
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        } else {
            switch (nscp->cmnd[0]) {
              case TEST_UNIT_READY:
              case INQUIRY:
              case REQUEST_SENSE:
              case READ_CAPACITY:
              case VERIFY:
              case START_STOP:
              case MODE_SENSE:
              case SERVICE_ACTION_IN:
                TRACE(("cache cmd %x/%x/%x/%x/%x/%x\n",nscp->cmnd[0],
                       nscp->cmnd[1],nscp->cmnd[2],nscp->cmnd[3],
                       nscp->cmnd[4],nscp->cmnd[5]));
                if (ha->hdr[t].media_changed && nscp->cmnd[0] != INQUIRY) {
                    /* return UNIT_ATTENTION */
                    TRACE2(("cmd 0x%x target %d: UNIT_ATTENTION\n",
                             nscp->cmnd[0], t));
                    ha->hdr[t].media_changed = FALSE;
                    memset((char*)nscp->sense_buffer,0,16);
                    nscp->sense_buffer[0] = 0x70;
                    nscp->sense_buffer[2] = UNIT_ATTENTION;
                    nscp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
2247 2248
                    if (!nscp_cmndinfo->wait_for_completion)
                        nscp_cmndinfo->wait_for_completion++;
L
Linus Torvalds 已提交
2249
                    else
2250
                        gdth_scsi_done(nscp);
2251
                } else if (gdth_internal_cache_cmd(ha, nscp))
2252
                    gdth_scsi_done(nscp);
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                break;

              case ALLOW_MEDIUM_REMOVAL:
                TRACE(("cache cmd %x/%x/%x/%x/%x/%x\n",nscp->cmnd[0],
                       nscp->cmnd[1],nscp->cmnd[2],nscp->cmnd[3],
                       nscp->cmnd[4],nscp->cmnd[5]));
                if ( (nscp->cmnd[4]&1) && !(ha->hdr[t].devtype&1) ) {
                    TRACE(("Prevent r. nonremov. drive->do nothing\n"));
                    nscp->result = DID_OK << 16;
                    nscp->sense_buffer[0] = 0;
2263 2264
                    if (!nscp_cmndinfo->wait_for_completion)
                        nscp_cmndinfo->wait_for_completion++;
L
Linus Torvalds 已提交
2265
                    else
2266
                        gdth_scsi_done(nscp);
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                } else {
                    nscp->cmnd[3] = (ha->hdr[t].devtype&1) ? 1:0;
                    TRACE(("Prevent/allow r. %d rem. drive %d\n",
                           nscp->cmnd[4],nscp->cmnd[3]));
2271
                    if (!(cmd_index=gdth_fill_cache_cmd(ha, nscp, t)))
L
Linus Torvalds 已提交
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                        this_cmd = FALSE;
                }
                break;
                
              case RESERVE:
              case RELEASE:
                TRACE2(("cache cmd %s\n",nscp->cmnd[0] == RESERVE ?
                        "RESERVE" : "RELEASE"));
2280
                if (!(cmd_index=gdth_fill_cache_cmd(ha, nscp, t)))
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                    this_cmd = FALSE;
                break;
                
              case READ_6:
              case WRITE_6:
              case READ_10:
              case WRITE_10:
              case READ_16:
              case WRITE_16:
                if (ha->hdr[t].media_changed) {
                    /* return UNIT_ATTENTION */
                    TRACE2(("cmd 0x%x target %d: UNIT_ATTENTION\n",
                             nscp->cmnd[0], t));
                    ha->hdr[t].media_changed = FALSE;
                    memset((char*)nscp->sense_buffer,0,16);
                    nscp->sense_buffer[0] = 0x70;
                    nscp->sense_buffer[2] = UNIT_ATTENTION;
                    nscp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
2299 2300
                    if (!nscp_cmndinfo->wait_for_completion)
                        nscp_cmndinfo->wait_for_completion++;
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                    else
2302
                        gdth_scsi_done(nscp);
2303
                } else if (!(cmd_index=gdth_fill_cache_cmd(ha, nscp, t)))
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                    this_cmd = FALSE;
                break;

              default:
                TRACE2(("cache cmd %x/%x/%x/%x/%x/%x unknown\n",nscp->cmnd[0],
                        nscp->cmnd[1],nscp->cmnd[2],nscp->cmnd[3],
                        nscp->cmnd[4],nscp->cmnd[5]));
                printk("GDT-HA %d: Unknown SCSI command 0x%x to cache service !\n",
2312
                       ha->hanum, nscp->cmnd[0]);
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                nscp->result = DID_ABORT << 16;
2314 2315
                if (!nscp_cmndinfo->wait_for_completion)
                    nscp_cmndinfo->wait_for_completion++;
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                else
2317
                    gdth_scsi_done(nscp);
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                break;
            }
        }

        if (!this_cmd)
            break;
        if (nscp == ha->req_first)
            ha->req_first = pscp = (Scsi_Cmnd *)nscp->SCp.ptr;
        else
            pscp->SCp.ptr = nscp->SCp.ptr;
        if (!next_cmd)
            break;
    }

    if (ha->cmd_cnt > 0) {
2333
        gdth_release_event(ha);
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    }

    if (!gdth_polling) 
        spin_unlock_irqrestore(&ha->smp_lock, flags);

    if (gdth_polling && ha->cmd_cnt > 0) {
2340
        if (!gdth_wait(ha, cmd_index, POLL_TIMEOUT))
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            printk("GDT-HA %d: Command %d timed out !\n",
2342
                   ha->hanum, cmd_index);
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    }
}
2345 2346 2347 2348 2349

/*
 * gdth_copy_internal_data() - copy to/from a buffer onto a scsi_cmnd's
 * buffers, kmap_atomic() as needed.
 */
2350
static void gdth_copy_internal_data(gdth_ha_str *ha, Scsi_Cmnd *scp,
2351
                                    char *buffer, ushort count, int to_buffer)
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{
2353
    ushort cpcount,i, max_sg = gdth_sg_count(scp);
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    ushort cpsum,cpnow;
    struct scatterlist *sl;
    char *address;

2358
    cpcount = min_t(ushort, count, gdth_bufflen(scp));
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2360 2361 2362
    if (cpcount) {
        cpsum=0;
        scsi_for_each_sg(scp, sl, max_sg, i) {
2363
            unsigned long flags;
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            cpnow = (ushort)sl->length;
            TRACE(("copy_internal() now %d sum %d count %d %d\n",
2366
                          cpnow, cpsum, cpcount, gdth_bufflen(scp)));
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            if (cpsum+cpnow > cpcount) 
                cpnow = cpcount - cpsum;
            cpsum += cpnow;
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            if (!sg_page(sl)) {
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                printk("GDT-HA %d: invalid sc/gt element in gdth_copy_internal_data()\n",
2372
                       ha->hanum);
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                return;
            }
2375
            local_irq_save(flags);
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            address = kmap_atomic(sg_page(sl), KM_BIO_SRC_IRQ) + sl->offset;
2377 2378 2379 2380
            if (to_buffer)
                memcpy(buffer, address, cpnow);
            else
                memcpy(address, buffer, cpnow);
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            flush_dcache_page(sg_page(sl));
2382 2383
            kunmap_atomic(address, KM_BIO_SRC_IRQ);
            local_irq_restore(flags);
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            if (cpsum == cpcount)
                break;
            buffer += cpnow;
        }
2388 2389 2390 2391
    } else if (count) {
        printk("GDT-HA %d: SCSI command with no buffers but data transfer expected!\n",
               ha->hanum);
        WARN_ON(1);
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    }
}

2395
static int gdth_internal_cache_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp)
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{
    unchar t;
    gdth_inq_data inq;
    gdth_rdcap_data rdc;
    gdth_sense_data sd;
    gdth_modep_data mpd;
2402
    struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
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    t  = scp->device->id;
    TRACE(("gdth_internal_cache_cmd() cmd 0x%x hdrive %d\n",
           scp->cmnd[0],t));

    scp->result = DID_OK << 16;
    scp->sense_buffer[0] = 0;

    switch (scp->cmnd[0]) {
      case TEST_UNIT_READY:
      case VERIFY:
      case START_STOP:
        TRACE2(("Test/Verify/Start hdrive %d\n",t));
        break;

      case INQUIRY:
        TRACE2(("Inquiry hdrive %d devtype %d\n",
                t,ha->hdr[t].devtype));
        inq.type_qual = (ha->hdr[t].devtype&4) ? TYPE_ROM:TYPE_DISK;
        /* you can here set all disks to removable, if you want to do
           a flush using the ALLOW_MEDIUM_REMOVAL command */
        inq.modif_rmb = 0x00;
        if ((ha->hdr[t].devtype & 1) ||
            (ha->hdr[t].cluster_type & CLUSTER_DRIVE))
            inq.modif_rmb = 0x80;
        inq.version   = 2;
        inq.resp_aenc = 2;
        inq.add_length= 32;
        strcpy(inq.vendor,ha->oem_name);
        sprintf(inq.product,"Host Drive  #%02d",t);
        strcpy(inq.revision,"   ");
2434
        gdth_copy_internal_data(ha, scp, (char*)&inq, sizeof(gdth_inq_data), 0);
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        break;

      case REQUEST_SENSE:
        TRACE2(("Request sense hdrive %d\n",t));
        sd.errorcode = 0x70;
        sd.segno     = 0x00;
        sd.key       = NO_SENSE;
        sd.info      = 0;
        sd.add_length= 0;
2444
        gdth_copy_internal_data(ha, scp, (char*)&sd, sizeof(gdth_sense_data), 0);
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        break;

      case MODE_SENSE:
        TRACE2(("Mode sense hdrive %d\n",t));
        memset((char*)&mpd,0,sizeof(gdth_modep_data));
        mpd.hd.data_length = sizeof(gdth_modep_data);
        mpd.hd.dev_par     = (ha->hdr[t].devtype&2) ? 0x80:0;
        mpd.hd.bd_length   = sizeof(mpd.bd);
        mpd.bd.block_length[0] = (SECTOR_SIZE & 0x00ff0000) >> 16;
        mpd.bd.block_length[1] = (SECTOR_SIZE & 0x0000ff00) >> 8;
        mpd.bd.block_length[2] = (SECTOR_SIZE & 0x000000ff);
2456
        gdth_copy_internal_data(ha, scp, (char*)&mpd, sizeof(gdth_modep_data), 0);
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        break;

      case READ_CAPACITY:
        TRACE2(("Read capacity hdrive %d\n",t));
        if (ha->hdr[t].size > (ulong64)0xffffffff)
            rdc.last_block_no = 0xffffffff;
        else
            rdc.last_block_no = cpu_to_be32(ha->hdr[t].size-1);
        rdc.block_length  = cpu_to_be32(SECTOR_SIZE);
2466
        gdth_copy_internal_data(ha, scp, (char*)&rdc, sizeof(gdth_rdcap_data), 0);
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        break;

      case SERVICE_ACTION_IN:
        if ((scp->cmnd[1] & 0x1f) == SAI_READ_CAPACITY_16 &&
            (ha->cache_feat & GDT_64BIT)) {
            gdth_rdcap16_data rdc16;

            TRACE2(("Read capacity (16) hdrive %d\n",t));
            rdc16.last_block_no = cpu_to_be64(ha->hdr[t].size-1);
            rdc16.block_length  = cpu_to_be32(SECTOR_SIZE);
2477
            gdth_copy_internal_data(ha, scp, (char*)&rdc16,
2478
                                                 sizeof(gdth_rdcap16_data), 0);
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        } else { 
            scp->result = DID_ABORT << 16;
        }
        break;

      default:
        TRACE2(("Internal cache cmd 0x%x unknown\n",scp->cmnd[0]));
        break;
    }

2489 2490
    if (!cmndinfo->wait_for_completion)
        cmndinfo->wait_for_completion++;
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    else 
        return 1;

    return 0;
}
2496 2497

static int gdth_fill_cache_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp, ushort hdrive)
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{
    register gdth_cmd_str *cmdp;
2500
    struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
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    ulong32 cnt, blockcnt;
    ulong64 no, blockno;
    int i, cmd_index, read_write, sgcnt, mode64;

    cmdp = ha->pccb;
    TRACE(("gdth_fill_cache_cmd() cmd 0x%x cmdsize %d hdrive %d\n",
                 scp->cmnd[0],scp->cmd_len,hdrive));

    if (ha->type==GDT_EISA && ha->cmd_cnt>0) 
        return 0;

    mode64 = (ha->cache_feat & GDT_64BIT) ? TRUE : FALSE;
    /* test for READ_16, WRITE_16 if !mode64 ? ---
       not required, should not occur due to error return on 
       READ_CAPACITY_16 */

    cmdp->Service = CACHESERVICE;
    cmdp->RequestBuffer = scp;
    /* search free command index */
2520
    if (!(cmd_index=gdth_get_cmd_index(ha))) {
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        TRACE(("GDT: No free command index found\n"));
        return 0;
    }
    /* if it's the first command, set command semaphore */
    if (ha->cmd_cnt == 0)
2526
        gdth_set_sema0(ha);
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    /* fill command */
    read_write = 0;
2530 2531
    if (cmndinfo->OpCode != -1)
        cmdp->OpCode = cmndinfo->OpCode;   /* special cache cmd. */
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    else if (scp->cmnd[0] == RESERVE) 
        cmdp->OpCode = GDT_RESERVE_DRV;
    else if (scp->cmnd[0] == RELEASE)
        cmdp->OpCode = GDT_RELEASE_DRV;
    else if (scp->cmnd[0] == ALLOW_MEDIUM_REMOVAL) {
        if (scp->cmnd[4] & 1)                   /* prevent ? */
            cmdp->OpCode = GDT_MOUNT;
        else if (scp->cmnd[3] & 1)              /* removable drive ? */
            cmdp->OpCode = GDT_UNMOUNT;
        else
            cmdp->OpCode = GDT_FLUSH;
    } else if (scp->cmnd[0] == WRITE_6 || scp->cmnd[0] == WRITE_10 ||
               scp->cmnd[0] == WRITE_12 || scp->cmnd[0] == WRITE_16
    ) {
        read_write = 1;
        if (gdth_write_through || ((ha->hdr[hdrive].rw_attribs & 1) && 
                                   (ha->cache_feat & GDT_WR_THROUGH)))
            cmdp->OpCode = GDT_WRITE_THR;
        else
            cmdp->OpCode = GDT_WRITE;
    } else {
        read_write = 2;
        cmdp->OpCode = GDT_READ;
    }

    cmdp->BoardNode = LOCALBOARD;
    if (mode64) {
        cmdp->u.cache64.DeviceNo = hdrive;
        cmdp->u.cache64.BlockNo  = 1;
        cmdp->u.cache64.sg_canz  = 0;
    } else {
        cmdp->u.cache.DeviceNo = hdrive;
        cmdp->u.cache.BlockNo  = 1;
        cmdp->u.cache.sg_canz  = 0;
    }

    if (read_write) {
        if (scp->cmd_len == 16) {
            memcpy(&no, &scp->cmnd[2], sizeof(ulong64));
            blockno = be64_to_cpu(no);
            memcpy(&cnt, &scp->cmnd[10], sizeof(ulong32));
            blockcnt = be32_to_cpu(cnt);
        } else if (scp->cmd_len == 10) {
            memcpy(&no, &scp->cmnd[2], sizeof(ulong32));
            blockno = be32_to_cpu(no);
            memcpy(&cnt, &scp->cmnd[7], sizeof(ushort));
            blockcnt = be16_to_cpu(cnt);
        } else {
            memcpy(&no, &scp->cmnd[0], sizeof(ulong32));
            blockno = be32_to_cpu(no) & 0x001fffffUL;
            blockcnt= scp->cmnd[4]==0 ? 0x100 : scp->cmnd[4];
        }
        if (mode64) {
            cmdp->u.cache64.BlockNo = blockno;
            cmdp->u.cache64.BlockCnt = blockcnt;
        } else {
            cmdp->u.cache.BlockNo = (ulong32)blockno;
            cmdp->u.cache.BlockCnt = blockcnt;
        }

2592
        if (gdth_bufflen(scp)) {
2593
            cmndinfo->dma_dir = (read_write == 1 ?
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                PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE);   
2595 2596
            sgcnt = pci_map_sg(ha->pdev, gdth_sglist(scp), gdth_sg_count(scp),
                               cmndinfo->dma_dir);
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            if (mode64) {
2598 2599
                struct scatterlist *sl;

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                cmdp->u.cache64.DestAddr= (ulong64)-1;
                cmdp->u.cache64.sg_canz = sgcnt;
2602
                scsi_for_each_sg(scp, sl, sgcnt, i) {
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                    cmdp->u.cache64.sg_lst[i].sg_ptr = sg_dma_address(sl);
#ifdef GDTH_DMA_STATISTICS
                    if (cmdp->u.cache64.sg_lst[i].sg_ptr > (ulong64)0xffffffff)
                        ha->dma64_cnt++;
                    else
                        ha->dma32_cnt++;
#endif
                    cmdp->u.cache64.sg_lst[i].sg_len = sg_dma_len(sl);
                }
            } else {
2613 2614
                struct scatterlist *sl;

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                cmdp->u.cache.DestAddr= 0xffffffff;
                cmdp->u.cache.sg_canz = sgcnt;
2617
                scsi_for_each_sg(scp, sl, sgcnt, i) {
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                    cmdp->u.cache.sg_lst[i].sg_ptr = sg_dma_address(sl);
#ifdef GDTH_DMA_STATISTICS
                    ha->dma32_cnt++;
#endif
                    cmdp->u.cache.sg_lst[i].sg_len = sg_dma_len(sl);
                }
            }

#ifdef GDTH_STATISTICS
            if (max_sg < (ulong32)sgcnt) {
                max_sg = (ulong32)sgcnt;
                TRACE3(("GDT: max_sg = %d\n",max_sg));
            }
#endif

        }
    }
    /* evaluate command size, check space */
    if (mode64) {
        TRACE(("cache cmd: addr. %x sganz %x sgptr0 %x sglen0 %x\n",
               cmdp->u.cache64.DestAddr,cmdp->u.cache64.sg_canz,
               cmdp->u.cache64.sg_lst[0].sg_ptr,
               cmdp->u.cache64.sg_lst[0].sg_len));
        TRACE(("cache cmd: cmd %d blockno. %d, blockcnt %d\n",
               cmdp->OpCode,cmdp->u.cache64.BlockNo,cmdp->u.cache64.BlockCnt));
        ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.cache64.sg_lst) +
            (ushort)cmdp->u.cache64.sg_canz * sizeof(gdth_sg64_str);
    } else {
        TRACE(("cache cmd: addr. %x sganz %x sgptr0 %x sglen0 %x\n",
               cmdp->u.cache.DestAddr,cmdp->u.cache.sg_canz,
               cmdp->u.cache.sg_lst[0].sg_ptr,
               cmdp->u.cache.sg_lst[0].sg_len));
        TRACE(("cache cmd: cmd %d blockno. %d, blockcnt %d\n",
               cmdp->OpCode,cmdp->u.cache.BlockNo,cmdp->u.cache.BlockCnt));
        ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.cache.sg_lst) +
            (ushort)cmdp->u.cache.sg_canz * sizeof(gdth_sg_str);
    }
    if (ha->cmd_len & 3)
        ha->cmd_len += (4 - (ha->cmd_len & 3));

    if (ha->cmd_cnt > 0) {
        if ((ha->cmd_offs_dpmem + ha->cmd_len + DPMEM_COMMAND_OFFSET) >
            ha->ic_all_size) {
            TRACE2(("gdth_fill_cache() DPMEM overflow\n"));
            ha->cmd_tab[cmd_index-2].cmnd = UNUSED_CMND;
            return 0;
        }
    }

    /* copy command */
2668
    gdth_copy_command(ha);
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    return cmd_index;
}

2672
static int gdth_fill_raw_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp, unchar b)
L
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{
    register gdth_cmd_str *cmdp;
    ushort i;
2676
    dma_addr_t sense_paddr;
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    int cmd_index, sgcnt, mode64;
    unchar t,l;
    struct page *page;
    ulong offset;
2681
    struct gdth_cmndinfo *cmndinfo;
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    t = scp->device->id;
    l = scp->device->lun;
    cmdp = ha->pccb;
    TRACE(("gdth_fill_raw_cmd() cmd 0x%x bus %d ID %d LUN %d\n",
           scp->cmnd[0],b,t,l));

    if (ha->type==GDT_EISA && ha->cmd_cnt>0) 
        return 0;

    mode64 = (ha->raw_feat & GDT_64BIT) ? TRUE : FALSE;

    cmdp->Service = SCSIRAWSERVICE;
    cmdp->RequestBuffer = scp;
    /* search free command index */
2697
    if (!(cmd_index=gdth_get_cmd_index(ha))) {
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        TRACE(("GDT: No free command index found\n"));
        return 0;
    }
    /* if it's the first command, set command semaphore */
    if (ha->cmd_cnt == 0)
2703
        gdth_set_sema0(ha);
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2705
    cmndinfo = gdth_cmnd_priv(scp);
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    /* fill command */  
2707 2708
    if (cmndinfo->OpCode != -1) {
        cmdp->OpCode           = cmndinfo->OpCode; /* special raw cmd. */
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        cmdp->BoardNode        = LOCALBOARD;
        if (mode64) {
2711
            cmdp->u.raw64.direction = (cmndinfo->phase >> 8);
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            TRACE2(("special raw cmd 0x%x param 0x%x\n", 
                    cmdp->OpCode, cmdp->u.raw64.direction));
            /* evaluate command size */
            ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.raw64.sg_lst);
        } else {
2717
            cmdp->u.raw.direction  = (cmndinfo->phase >> 8);
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            TRACE2(("special raw cmd 0x%x param 0x%x\n", 
                    cmdp->OpCode, cmdp->u.raw.direction));
            /* evaluate command size */
            ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.raw.sg_lst);
        }

    } else {
        page = virt_to_page(scp->sense_buffer);
        offset = (ulong)scp->sense_buffer & ~PAGE_MASK;
        sense_paddr = pci_map_page(ha->pdev,page,offset,
                                   16,PCI_DMA_FROMDEVICE);
2729 2730

	cmndinfo->sense_paddr  = sense_paddr;
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        cmdp->OpCode           = GDT_WRITE;             /* always */
        cmdp->BoardNode        = LOCALBOARD;
        if (mode64) { 
            cmdp->u.raw64.reserved   = 0;
            cmdp->u.raw64.mdisc_time = 0;
            cmdp->u.raw64.mcon_time  = 0;
            cmdp->u.raw64.clen       = scp->cmd_len;
            cmdp->u.raw64.target     = t;
            cmdp->u.raw64.lun        = l;
            cmdp->u.raw64.bus        = b;
            cmdp->u.raw64.priority   = 0;
2742
            cmdp->u.raw64.sdlen      = gdth_bufflen(scp);
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            cmdp->u.raw64.sense_len  = 16;
            cmdp->u.raw64.sense_data = sense_paddr;
            cmdp->u.raw64.direction  = 
                gdth_direction_tab[scp->cmnd[0]]==DOU ? GDTH_DATA_OUT:GDTH_DATA_IN;
            memcpy(cmdp->u.raw64.cmd,scp->cmnd,16);
2748
            cmdp->u.raw64.sg_ranz    = 0;
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        } else {
            cmdp->u.raw.reserved   = 0;
            cmdp->u.raw.mdisc_time = 0;
            cmdp->u.raw.mcon_time  = 0;
            cmdp->u.raw.clen       = scp->cmd_len;
            cmdp->u.raw.target     = t;
            cmdp->u.raw.lun        = l;
            cmdp->u.raw.bus        = b;
            cmdp->u.raw.priority   = 0;
            cmdp->u.raw.link_p     = 0;
2759
            cmdp->u.raw.sdlen      = gdth_bufflen(scp);
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            cmdp->u.raw.sense_len  = 16;
            cmdp->u.raw.sense_data = sense_paddr;
            cmdp->u.raw.direction  = 
                gdth_direction_tab[scp->cmnd[0]]==DOU ? GDTH_DATA_OUT:GDTH_DATA_IN;
            memcpy(cmdp->u.raw.cmd,scp->cmnd,12);
2765
            cmdp->u.raw.sg_ranz    = 0;
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        }

2768
        if (gdth_bufflen(scp)) {
2769
            cmndinfo->dma_dir = PCI_DMA_BIDIRECTIONAL;
2770 2771
            sgcnt = pci_map_sg(ha->pdev, gdth_sglist(scp), gdth_sg_count(scp),
                               cmndinfo->dma_dir);
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            if (mode64) {
2773 2774
                struct scatterlist *sl;

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                cmdp->u.raw64.sdata = (ulong64)-1;
                cmdp->u.raw64.sg_ranz = sgcnt;
2777
                scsi_for_each_sg(scp, sl, sgcnt, i) {
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                    cmdp->u.raw64.sg_lst[i].sg_ptr = sg_dma_address(sl);
#ifdef GDTH_DMA_STATISTICS
                    if (cmdp->u.raw64.sg_lst[i].sg_ptr > (ulong64)0xffffffff)
                        ha->dma64_cnt++;
                    else
                        ha->dma32_cnt++;
#endif
                    cmdp->u.raw64.sg_lst[i].sg_len = sg_dma_len(sl);
                }
            } else {
2788 2789
                struct scatterlist *sl;

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                cmdp->u.raw.sdata = 0xffffffff;
                cmdp->u.raw.sg_ranz = sgcnt;
2792
                scsi_for_each_sg(scp, sl, sgcnt, i) {
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                    cmdp->u.raw.sg_lst[i].sg_ptr = sg_dma_address(sl);
#ifdef GDTH_DMA_STATISTICS
                    ha->dma32_cnt++;
#endif
                    cmdp->u.raw.sg_lst[i].sg_len = sg_dma_len(sl);
                }
            }

#ifdef GDTH_STATISTICS
            if (max_sg < sgcnt) {
                max_sg = sgcnt;
                TRACE3(("GDT: max_sg = %d\n",sgcnt));
            }
#endif

        }
        if (mode64) {
            TRACE(("raw cmd: addr. %x sganz %x sgptr0 %x sglen0 %x\n",
                   cmdp->u.raw64.sdata,cmdp->u.raw64.sg_ranz,
                   cmdp->u.raw64.sg_lst[0].sg_ptr,
                   cmdp->u.raw64.sg_lst[0].sg_len));
            /* evaluate command size */
            ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.raw64.sg_lst) +
                (ushort)cmdp->u.raw64.sg_ranz * sizeof(gdth_sg64_str);
        } else {
            TRACE(("raw cmd: addr. %x sganz %x sgptr0 %x sglen0 %x\n",
                   cmdp->u.raw.sdata,cmdp->u.raw.sg_ranz,
                   cmdp->u.raw.sg_lst[0].sg_ptr,
                   cmdp->u.raw.sg_lst[0].sg_len));
            /* evaluate command size */
            ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.raw.sg_lst) +
                (ushort)cmdp->u.raw.sg_ranz * sizeof(gdth_sg_str);
        }
    }
    /* check space */
    if (ha->cmd_len & 3)
        ha->cmd_len += (4 - (ha->cmd_len & 3));

    if (ha->cmd_cnt > 0) {
        if ((ha->cmd_offs_dpmem + ha->cmd_len + DPMEM_COMMAND_OFFSET) >
            ha->ic_all_size) {
            TRACE2(("gdth_fill_raw() DPMEM overflow\n"));
            ha->cmd_tab[cmd_index-2].cmnd = UNUSED_CMND;
            return 0;
        }
    }

    /* copy command */
2841
    gdth_copy_command(ha);
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    return cmd_index;
}

2845
static int gdth_special_cmd(gdth_ha_str *ha, Scsi_Cmnd *scp)
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{
    register gdth_cmd_str *cmdp;
    int cmd_index;

    cmdp= ha->pccb;
    TRACE2(("gdth_special_cmd(): "));

    if (ha->type==GDT_EISA && ha->cmd_cnt>0) 
        return 0;

2856
    gdth_copy_internal_data(ha, scp, (char *)cmdp, sizeof(gdth_cmd_str), 1);
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    cmdp->RequestBuffer = scp;

    /* search free command index */
2860
    if (!(cmd_index=gdth_get_cmd_index(ha))) {
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        TRACE(("GDT: No free command index found\n"));
        return 0;
    }

    /* if it's the first command, set command semaphore */
    if (ha->cmd_cnt == 0)
2867
       gdth_set_sema0(ha);
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    /* evaluate command size, check space */
    if (cmdp->OpCode == GDT_IOCTL) {
        TRACE2(("IOCTL\n"));
        ha->cmd_len = 
            GDTOFFSOF(gdth_cmd_str,u.ioctl.p_param) + sizeof(ulong64);
    } else if (cmdp->Service == CACHESERVICE) {
        TRACE2(("cache command %d\n",cmdp->OpCode));
        if (ha->cache_feat & GDT_64BIT)
            ha->cmd_len = 
                GDTOFFSOF(gdth_cmd_str,u.cache64.sg_lst) + sizeof(gdth_sg64_str);
        else
            ha->cmd_len = 
                GDTOFFSOF(gdth_cmd_str,u.cache.sg_lst) + sizeof(gdth_sg_str);
    } else if (cmdp->Service == SCSIRAWSERVICE) {
        TRACE2(("raw command %d\n",cmdp->OpCode));
        if (ha->raw_feat & GDT_64BIT)
            ha->cmd_len = 
                GDTOFFSOF(gdth_cmd_str,u.raw64.sg_lst) + sizeof(gdth_sg64_str);
        else
            ha->cmd_len = 
                GDTOFFSOF(gdth_cmd_str,u.raw.sg_lst) + sizeof(gdth_sg_str);
    }

    if (ha->cmd_len & 3)
        ha->cmd_len += (4 - (ha->cmd_len & 3));

    if (ha->cmd_cnt > 0) {
        if ((ha->cmd_offs_dpmem + ha->cmd_len + DPMEM_COMMAND_OFFSET) >
            ha->ic_all_size) {
            TRACE2(("gdth_special_cmd() DPMEM overflow\n"));
            ha->cmd_tab[cmd_index-2].cmnd = UNUSED_CMND;
            return 0;
        }
    }

    /* copy command */
2905
    gdth_copy_command(ha);
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    return cmd_index;
}    


/* Controller event handling functions */
static gdth_evt_str *gdth_store_event(gdth_ha_str *ha, ushort source, 
                                      ushort idx, gdth_evt_data *evt)
{
    gdth_evt_str *e;
    struct timeval tv;

    /* no GDTH_LOCK_HA() ! */
    TRACE2(("gdth_store_event() source %d idx %d\n", source, idx));
    if (source == 0)                        /* no source -> no event */
        return NULL;

    if (ebuffer[elastidx].event_source == source &&
        ebuffer[elastidx].event_idx == idx &&
        ((evt->size != 0 && ebuffer[elastidx].event_data.size != 0 &&
            !memcmp((char *)&ebuffer[elastidx].event_data.eu,
            (char *)&evt->eu, evt->size)) ||
        (evt->size == 0 && ebuffer[elastidx].event_data.size == 0 &&
            !strcmp((char *)&ebuffer[elastidx].event_data.event_string,
            (char *)&evt->event_string)))) { 
        e = &ebuffer[elastidx];
        do_gettimeofday(&tv);
        e->last_stamp = tv.tv_sec;
        ++e->same_count;
    } else {
        if (ebuffer[elastidx].event_source != 0) {  /* entry not free ? */
            ++elastidx;
            if (elastidx == MAX_EVENTS)
                elastidx = 0;
            if (elastidx == eoldidx) {              /* reached mark ? */
                ++eoldidx;
                if (eoldidx == MAX_EVENTS)
                    eoldidx = 0;
            }
        }
        e = &ebuffer[elastidx];
        e->event_source = source;
        e->event_idx = idx;
        do_gettimeofday(&tv);
        e->first_stamp = e->last_stamp = tv.tv_sec;
        e->same_count = 1;
        e->event_data = *evt;
        e->application = 0;
    }
    return e;
}

static int gdth_read_event(gdth_ha_str *ha, int handle, gdth_evt_str *estr)
{
    gdth_evt_str *e;
    int eindex;
    ulong flags;

    TRACE2(("gdth_read_event() handle %d\n", handle));
    spin_lock_irqsave(&ha->smp_lock, flags);
    if (handle == -1)
        eindex = eoldidx;
    else
        eindex = handle;
    estr->event_source = 0;

    if (eindex >= MAX_EVENTS) {
        spin_unlock_irqrestore(&ha->smp_lock, flags);
        return eindex;
    }
    e = &ebuffer[eindex];
    if (e->event_source != 0) {
        if (eindex != elastidx) {
            if (++eindex == MAX_EVENTS)
                eindex = 0;
        } else {
            eindex = -1;
        }
        memcpy(estr, e, sizeof(gdth_evt_str));
    }
    spin_unlock_irqrestore(&ha->smp_lock, flags);
    return eindex;
}

static void gdth_readapp_event(gdth_ha_str *ha,
                               unchar application, gdth_evt_str *estr)
{
    gdth_evt_str *e;
    int eindex;
    ulong flags;
    unchar found = FALSE;

    TRACE2(("gdth_readapp_event() app. %d\n", application));
    spin_lock_irqsave(&ha->smp_lock, flags);
    eindex = eoldidx;
    for (;;) {
        e = &ebuffer[eindex];
        if (e->event_source == 0)
            break;
        if ((e->application & application) == 0) {
            e->application |= application;
            found = TRUE;
            break;
        }
        if (eindex == elastidx)
            break;
        if (++eindex == MAX_EVENTS)
            eindex = 0;
    }
    if (found)
        memcpy(estr, e, sizeof(gdth_evt_str));
    else
        estr->event_source = 0;
    spin_unlock_irqrestore(&ha->smp_lock, flags);
}

static void gdth_clear_events(void)
{
    TRACE(("gdth_clear_events()"));

    eoldidx = elastidx = 0;
    ebuffer[0].event_source = 0;
}


/* SCSI interface functions */

3032
static irqreturn_t __gdth_interrupt(gdth_ha_str *ha,
3033
                                    int gdth_from_wait, int* pIndex)
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{
    gdt6m_dpram_str __iomem *dp6m_ptr = NULL;
    gdt6_dpram_str __iomem *dp6_ptr;
    gdt2_dpram_str __iomem *dp2_ptr;
    Scsi_Cmnd *scp;
3039
    int rval, i;
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    unchar IStatus;
    ushort Service;
    ulong flags = 0;
#ifdef INT_COAL
    int coalesced = FALSE;
    int next = FALSE;
    gdth_coal_status *pcs = NULL;
    int act_int_coal = 0;       
#endif

3050
    TRACE(("gdth_interrupt() IRQ %d\n", ha->irq));
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    /* if polling and not from gdth_wait() -> return */
    if (gdth_polling) {
        if (!gdth_from_wait) {
            return IRQ_HANDLED;
        }
    }

    if (!gdth_polling)
3060
        spin_lock_irqsave(&ha->smp_lock, flags);
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    /* search controller */
3063 3064
    IStatus = gdth_get_status(ha);
    if (IStatus == 0) {
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        /* spurious interrupt */
        if (!gdth_polling)
3067 3068
            spin_unlock_irqrestore(&ha->smp_lock, flags);
        return IRQ_HANDLED;
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    }

#ifdef GDTH_STATISTICS
    ++act_ints;
#endif

#ifdef INT_COAL
    /* See if the fw is returning coalesced status */
    if (IStatus == COALINDEX) {
        /* Coalesced status.  Setup the initial status 
           buffer pointer and flags */
        pcs = ha->coal_stat;
        coalesced = TRUE;        
        next = TRUE;
    }

    do {
        if (coalesced) {
            /* For coalesced requests all status
               information is found in the status buffer */
            IStatus = (unchar)(pcs->status & 0xff);
        }
#endif
    
        if (ha->type == GDT_EISA) {
            if (IStatus & 0x80) {                       /* error flag */
                IStatus &= ~0x80;
                ha->status = inw(ha->bmic + MAILBOXREG+8);
                TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
            } else                                      /* no error */
                ha->status = S_OK;
            ha->info = inl(ha->bmic + MAILBOXREG+12);
            ha->service = inw(ha->bmic + MAILBOXREG+10);
            ha->info2 = inl(ha->bmic + MAILBOXREG+4);

            outb(0xff, ha->bmic + EDOORREG);    /* acknowledge interrupt */
            outb(0x00, ha->bmic + SEMA1REG);    /* reset status semaphore */
        } else if (ha->type == GDT_ISA) {
            dp2_ptr = ha->brd;
            if (IStatus & 0x80) {                       /* error flag */
                IStatus &= ~0x80;
3110
                ha->status = readw(&dp2_ptr->u.ic.Status);
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                TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
            } else                                      /* no error */
                ha->status = S_OK;
3114 3115 3116
            ha->info = readl(&dp2_ptr->u.ic.Info[0]);
            ha->service = readw(&dp2_ptr->u.ic.Service);
            ha->info2 = readl(&dp2_ptr->u.ic.Info[1]);
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3118 3119 3120
            writeb(0xff, &dp2_ptr->io.irqdel); /* acknowledge interrupt */
            writeb(0, &dp2_ptr->u.ic.Cmd_Index);/* reset command index */
            writeb(0, &dp2_ptr->io.Sema1);     /* reset status semaphore */
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        } else if (ha->type == GDT_PCI) {
            dp6_ptr = ha->brd;
            if (IStatus & 0x80) {                       /* error flag */
                IStatus &= ~0x80;
3125
                ha->status = readw(&dp6_ptr->u.ic.Status);
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                TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
            } else                                      /* no error */
                ha->status = S_OK;
3129 3130 3131
            ha->info = readl(&dp6_ptr->u.ic.Info[0]);
            ha->service = readw(&dp6_ptr->u.ic.Service);
            ha->info2 = readl(&dp6_ptr->u.ic.Info[1]);
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3133 3134 3135
            writeb(0xff, &dp6_ptr->io.irqdel); /* acknowledge interrupt */
            writeb(0, &dp6_ptr->u.ic.Cmd_Index);/* reset command index */
            writeb(0, &dp6_ptr->io.Sema1);     /* reset status semaphore */
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        } else if (ha->type == GDT_PCINEW) {
            if (IStatus & 0x80) {                       /* error flag */
                IStatus &= ~0x80;
                ha->status = inw(PTR2USHORT(&ha->plx->status));
                TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
            } else
                ha->status = S_OK;
            ha->info = inl(PTR2USHORT(&ha->plx->info[0]));
            ha->service = inw(PTR2USHORT(&ha->plx->service));
            ha->info2 = inl(PTR2USHORT(&ha->plx->info[1]));

            outb(0xff, PTR2USHORT(&ha->plx->edoor_reg)); 
            outb(0x00, PTR2USHORT(&ha->plx->sema1_reg)); 
        } else if (ha->type == GDT_PCIMPR) {
            dp6m_ptr = ha->brd;
            if (IStatus & 0x80) {                       /* error flag */
                IStatus &= ~0x80;
#ifdef INT_COAL
                if (coalesced)
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                    ha->status = pcs->ext_status & 0xffff;
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                else 
#endif
3158
                    ha->status = readw(&dp6m_ptr->i960r.status);
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                TRACE2(("gdth_interrupt() error %d/%d\n",IStatus,ha->status));
            } else                                      /* no error */
                ha->status = S_OK;
#ifdef INT_COAL
            /* get information */
            if (coalesced) {    
                ha->info = pcs->info0;
                ha->info2 = pcs->info1;
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                ha->service = (pcs->ext_status >> 16) & 0xffff;
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            } else
#endif
            {
3171 3172 3173
                ha->info = readl(&dp6m_ptr->i960r.info[0]);
                ha->service = readw(&dp6m_ptr->i960r.service);
                ha->info2 = readl(&dp6m_ptr->i960r.info[1]);
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            }
            /* event string */
            if (IStatus == ASYNCINDEX) {
                if (ha->service != SCREENSERVICE &&
                    (ha->fw_vers & 0xff) >= 0x1a) {
3179
                    ha->dvr.severity = readb
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                        (&((gdt6m_dpram_str __iomem *)ha->brd)->i960r.severity);
                    for (i = 0; i < 256; ++i) {
3182
                        ha->dvr.event_string[i] = readb
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                            (&((gdt6m_dpram_str __iomem *)ha->brd)->i960r.evt_str[i]);
                        if (ha->dvr.event_string[i] == 0)
                            break;
                    }
                }
            }
#ifdef INT_COAL
            /* Make sure that non coalesced interrupts get cleared
               before being handled by gdth_async_event/gdth_sync_event */
            if (!coalesced)
#endif                          
            {
3195 3196
                writeb(0xff, &dp6m_ptr->i960r.edoor_reg);
                writeb(0, &dp6m_ptr->i960r.sema1_reg);
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            }
        } else {
            TRACE2(("gdth_interrupt() unknown controller type\n"));
            if (!gdth_polling)
3201
                spin_unlock_irqrestore(&ha->smp_lock, flags);
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            return IRQ_HANDLED;
        }

        TRACE(("gdth_interrupt() index %d stat %d info %d\n",
               IStatus,ha->status,ha->info));

        if (gdth_from_wait) {
3209
            *pIndex = (int)IStatus;
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        }

        if (IStatus == ASYNCINDEX) {
            TRACE2(("gdth_interrupt() async. event\n"));
3214
            gdth_async_event(ha);
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            if (!gdth_polling)
3216
                spin_unlock_irqrestore(&ha->smp_lock, flags);
3217
            gdth_next(ha);
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            return IRQ_HANDLED;
        } 

        if (IStatus == SPEZINDEX) {
            TRACE2(("Service unknown or not initialized !\n"));
            ha->dvr.size = sizeof(ha->dvr.eu.driver);
3224
            ha->dvr.eu.driver.ionode = ha->hanum;
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            gdth_store_event(ha, ES_DRIVER, 4, &ha->dvr);
            if (!gdth_polling)
3227
                spin_unlock_irqrestore(&ha->smp_lock, flags);
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            return IRQ_HANDLED;
        }
        scp     = ha->cmd_tab[IStatus-2].cmnd;
        Service = ha->cmd_tab[IStatus-2].service;
        ha->cmd_tab[IStatus-2].cmnd = UNUSED_CMND;
        if (scp == UNUSED_CMND) {
            TRACE2(("gdth_interrupt() index to unused command (%d)\n",IStatus));
            ha->dvr.size = sizeof(ha->dvr.eu.driver);
3236
            ha->dvr.eu.driver.ionode = ha->hanum;
L
Linus Torvalds 已提交
3237 3238 3239
            ha->dvr.eu.driver.index = IStatus;
            gdth_store_event(ha, ES_DRIVER, 1, &ha->dvr);
            if (!gdth_polling)
3240
                spin_unlock_irqrestore(&ha->smp_lock, flags);
L
Linus Torvalds 已提交
3241 3242 3243 3244 3245
            return IRQ_HANDLED;
        }
        if (scp == INTERNAL_CMND) {
            TRACE(("gdth_interrupt() answer to internal command\n"));
            if (!gdth_polling)
3246
                spin_unlock_irqrestore(&ha->smp_lock, flags);
L
Linus Torvalds 已提交
3247 3248 3249 3250
            return IRQ_HANDLED;
        }

        TRACE(("gdth_interrupt() sync. status\n"));
3251
        rval = gdth_sync_event(ha,Service,IStatus,scp);
L
Linus Torvalds 已提交
3252
        if (!gdth_polling)
3253
            spin_unlock_irqrestore(&ha->smp_lock, flags);
L
Linus Torvalds 已提交
3254
        if (rval == 2) {
3255
            gdth_putq(ha, scp, gdth_cmnd_priv(scp)->priority);
L
Linus Torvalds 已提交
3256
        } else if (rval == 1) {
3257
            gdth_scsi_done(scp);
L
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3258 3259 3260 3261 3262 3263 3264 3265 3266 3267 3268 3269 3270 3271 3272 3273 3274 3275 3276 3277 3278 3279
        }

#ifdef INT_COAL
        if (coalesced) {
            /* go to the next status in the status buffer */
            ++pcs;
#ifdef GDTH_STATISTICS
            ++act_int_coal;
            if (act_int_coal > max_int_coal) {
                max_int_coal = act_int_coal;
                printk("GDT: max_int_coal = %d\n",(ushort)max_int_coal);
            }
#endif      
            /* see if there is another status */
            if (pcs->status == 0)    
                /* Stop the coalesce loop */
                next = FALSE;
        }
    } while (next);

    /* coalescing only for new GDT_PCIMPR controllers available */      
    if (ha->type == GDT_PCIMPR && coalesced) {
3280 3281
        writeb(0xff, &dp6m_ptr->i960r.edoor_reg);
        writeb(0, &dp6m_ptr->i960r.sema1_reg);
L
Linus Torvalds 已提交
3282 3283 3284
    }
#endif

3285
    gdth_next(ha);
L
Linus Torvalds 已提交
3286 3287 3288
    return IRQ_HANDLED;
}

3289 3290
static irqreturn_t gdth_interrupt(int irq, void *dev_id)
{
3291
	gdth_ha_str *ha = dev_id;
3292

3293
	return __gdth_interrupt(ha, false, NULL);
3294 3295
}

3296 3297
static int gdth_sync_event(gdth_ha_str *ha, int service, unchar index,
                                                              Scsi_Cmnd *scp)
L
Linus Torvalds 已提交
3298 3299 3300 3301
{
    gdth_msg_str *msg;
    gdth_cmd_str *cmdp;
    unchar b, t;
3302
    struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
L
Linus Torvalds 已提交
3303 3304 3305 3306 3307 3308 3309 3310 3311 3312 3313 3314 3315 3316 3317 3318 3319 3320

    cmdp = ha->pccb;
    TRACE(("gdth_sync_event() serv %d status %d\n",
           service,ha->status));

    if (service == SCREENSERVICE) {
        msg  = ha->pmsg;
        TRACE(("len: %d, answer: %d, ext: %d, alen: %d\n",
               msg->msg_len,msg->msg_answer,msg->msg_ext,msg->msg_alen));
        if (msg->msg_len > MSGLEN+1)
            msg->msg_len = MSGLEN+1;
        if (msg->msg_len)
            if (!(msg->msg_answer && msg->msg_ext)) {
                msg->msg_text[msg->msg_len] = '\0';
                printk("%s",msg->msg_text);
            }

        if (msg->msg_ext && !msg->msg_answer) {
3321
            while (gdth_test_busy(ha))
L
Linus Torvalds 已提交
3322 3323 3324
                gdth_delay(0);
            cmdp->Service       = SCREENSERVICE;
            cmdp->RequestBuffer = SCREEN_CMND;
3325 3326
            gdth_get_cmd_index(ha);
            gdth_set_sema0(ha);
L
Linus Torvalds 已提交
3327 3328 3329 3330 3331 3332 3333 3334 3335
            cmdp->OpCode        = GDT_READ;
            cmdp->BoardNode     = LOCALBOARD;
            cmdp->u.screen.reserved  = 0;
            cmdp->u.screen.su.msg.msg_handle= msg->msg_handle;
            cmdp->u.screen.su.msg.msg_addr  = ha->msg_phys;
            ha->cmd_offs_dpmem = 0;
            ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.screen.su.msg.msg_addr) 
                + sizeof(ulong64);
            ha->cmd_cnt = 0;
3336 3337
            gdth_copy_command(ha);
            gdth_release_event(ha);
L
Linus Torvalds 已提交
3338 3339 3340 3341 3342 3343 3344 3345 3346 3347 3348 3349 3350 3351 3352 3353 3354
            return 0;
        }

        if (msg->msg_answer && msg->msg_alen) {
            /* default answers (getchar() not possible) */
            if (msg->msg_alen == 1) {
                msg->msg_alen = 0;
                msg->msg_len = 1;
                msg->msg_text[0] = 0;
            } else {
                msg->msg_alen -= 2;
                msg->msg_len = 2;
                msg->msg_text[0] = 1;
                msg->msg_text[1] = 0;
            }
            msg->msg_ext    = 0;
            msg->msg_answer = 0;
3355
            while (gdth_test_busy(ha))
L
Linus Torvalds 已提交
3356 3357 3358
                gdth_delay(0);
            cmdp->Service       = SCREENSERVICE;
            cmdp->RequestBuffer = SCREEN_CMND;
3359 3360
            gdth_get_cmd_index(ha);
            gdth_set_sema0(ha);
L
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3361 3362 3363 3364 3365 3366 3367 3368 3369
            cmdp->OpCode        = GDT_WRITE;
            cmdp->BoardNode     = LOCALBOARD;
            cmdp->u.screen.reserved  = 0;
            cmdp->u.screen.su.msg.msg_handle= msg->msg_handle;
            cmdp->u.screen.su.msg.msg_addr  = ha->msg_phys;
            ha->cmd_offs_dpmem = 0;
            ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.screen.su.msg.msg_addr) 
                + sizeof(ulong64);
            ha->cmd_cnt = 0;
3370 3371
            gdth_copy_command(ha);
            gdth_release_event(ha);
L
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3372 3373 3374 3375 3376
            return 0;
        }
        printk("\n");

    } else {
C
Christoph Hellwig 已提交
3377
        b = scp->device->channel;
L
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3378
        t = scp->device->id;
3379
        if (cmndinfo->OpCode == -1 && b != ha->virt_bus) {
L
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3380 3381 3382 3383 3384
            ha->raw[BUS_L2P(ha,b)].io_cnt[t]--;
        }
        /* cache or raw service */
        if (ha->status == S_BSY) {
            TRACE2(("Controller busy -> retry !\n"));
3385 3386
            if (cmndinfo->OpCode == GDT_MOUNT)
                cmndinfo->OpCode = GDT_CLUST_INFO;
L
Linus Torvalds 已提交
3387 3388 3389
            /* retry */
            return 2;
        }
3390 3391 3392 3393
        if (gdth_bufflen(scp))
            pci_unmap_sg(ha->pdev, gdth_sglist(scp), gdth_sg_count(scp),
                         cmndinfo->dma_dir);

3394 3395 3396
        if (cmndinfo->sense_paddr)
            pci_unmap_page(ha->pdev, cmndinfo->sense_paddr, 16,
                                                           PCI_DMA_FROMDEVICE);
L
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3397 3398

        if (ha->status == S_OK) {
3399 3400 3401
            cmndinfo->status = S_OK;
            cmndinfo->info = ha->info;
            if (cmndinfo->OpCode != -1) {
L
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3402
                TRACE2(("gdth_sync_event(): special cmd 0x%x OK\n",
3403
                        cmndinfo->OpCode));
L
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3404
                /* special commands GDT_CLUST_INFO/GDT_MOUNT ? */
3405
                if (cmndinfo->OpCode == GDT_CLUST_INFO) {
L
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3406 3407 3408 3409
                    ha->hdr[t].cluster_type = (unchar)ha->info;
                    if (!(ha->hdr[t].cluster_type & 
                        CLUSTER_MOUNTED)) {
                        /* NOT MOUNTED -> MOUNT */
3410
                        cmndinfo->OpCode = GDT_MOUNT;
L
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3411 3412 3413
                        if (ha->hdr[t].cluster_type & 
                            CLUSTER_RESERVED) {
                            /* cluster drive RESERVED (on the other node) */
3414
                            cmndinfo->phase = -2;      /* reservation conflict */
L
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3415 3416
                        }
                    } else {
3417
                        cmndinfo->OpCode = -1;
L
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3418 3419
                    }
                } else {
3420
                    if (cmndinfo->OpCode == GDT_MOUNT) {
L
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3421 3422
                        ha->hdr[t].cluster_type |= CLUSTER_MOUNTED;
                        ha->hdr[t].media_changed = TRUE;
3423
                    } else if (cmndinfo->OpCode == GDT_UNMOUNT) {
L
Linus Torvalds 已提交
3424 3425 3426
                        ha->hdr[t].cluster_type &= ~CLUSTER_MOUNTED;
                        ha->hdr[t].media_changed = TRUE;
                    } 
3427
                    cmndinfo->OpCode = -1;
L
Linus Torvalds 已提交
3428 3429
                }
                /* retry */
3430
                cmndinfo->priority = HIGH_PRI;
L
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3431 3432 3433 3434 3435 3436 3437 3438 3439 3440 3441 3442
                return 2;
            } else {
                /* RESERVE/RELEASE ? */
                if (scp->cmnd[0] == RESERVE) {
                    ha->hdr[t].cluster_type |= CLUSTER_RESERVED;
                } else if (scp->cmnd[0] == RELEASE) {
                    ha->hdr[t].cluster_type &= ~CLUSTER_RESERVED;
                }           
                scp->result = DID_OK << 16;
                scp->sense_buffer[0] = 0;
            }
        } else {
3443 3444
            cmndinfo->status = ha->status;
            cmndinfo->info = ha->info;
L
Linus Torvalds 已提交
3445

3446
            if (cmndinfo->OpCode != -1) {
L
Linus Torvalds 已提交
3447
                TRACE2(("gdth_sync_event(): special cmd 0x%x error 0x%x\n",
3448 3449 3450 3451
                        cmndinfo->OpCode, ha->status));
                if (cmndinfo->OpCode == GDT_SCAN_START ||
                    cmndinfo->OpCode == GDT_SCAN_END) {
                    cmndinfo->OpCode = -1;
L
Linus Torvalds 已提交
3452
                    /* retry */
3453
                    cmndinfo->priority = HIGH_PRI;
L
Linus Torvalds 已提交
3454 3455 3456 3457 3458 3459 3460 3461 3462 3463 3464 3465 3466 3467 3468 3469 3470 3471 3472 3473 3474
                    return 2;
                }
                memset((char*)scp->sense_buffer,0,16);
                scp->sense_buffer[0] = 0x70;
                scp->sense_buffer[2] = NOT_READY;
                scp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
            } else if (service == CACHESERVICE) {
                if (ha->status == S_CACHE_UNKNOWN &&
                    (ha->hdr[t].cluster_type & 
                     CLUSTER_RESERVE_STATE) == CLUSTER_RESERVE_STATE) {
                    /* bus reset -> force GDT_CLUST_INFO */
                    ha->hdr[t].cluster_type &= ~CLUSTER_RESERVED;
                }
                memset((char*)scp->sense_buffer,0,16);
                if (ha->status == (ushort)S_CACHE_RESERV) {
                    scp->result = (DID_OK << 16) | (RESERVATION_CONFLICT << 1);
                } else {
                    scp->sense_buffer[0] = 0x70;
                    scp->sense_buffer[2] = NOT_READY;
                    scp->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
                }
3475
                if (!cmndinfo->internal_command) {
L
Linus Torvalds 已提交
3476
                    ha->dvr.size = sizeof(ha->dvr.eu.sync);
3477
                    ha->dvr.eu.sync.ionode  = ha->hanum;
L
Linus Torvalds 已提交
3478 3479 3480 3481 3482 3483 3484 3485 3486 3487 3488 3489 3490 3491 3492 3493 3494 3495
                    ha->dvr.eu.sync.service = service;
                    ha->dvr.eu.sync.status  = ha->status;
                    ha->dvr.eu.sync.info    = ha->info;
                    ha->dvr.eu.sync.hostdrive = t;
                    if (ha->status >= 0x8000)
                        gdth_store_event(ha, ES_SYNC, 0, &ha->dvr);
                    else
                        gdth_store_event(ha, ES_SYNC, service, &ha->dvr);
                }
            } else {
                /* sense buffer filled from controller firmware (DMA) */
                if (ha->status != S_RAW_SCSI || ha->info >= 0x100) {
                    scp->result = DID_BAD_TARGET << 16;
                } else {
                    scp->result = (DID_OK << 16) | ha->info;
                }
            }
        }
3496 3497
        if (!cmndinfo->wait_for_completion)
            cmndinfo->wait_for_completion++;
L
Linus Torvalds 已提交
3498 3499 3500 3501 3502 3503 3504 3505 3506 3507 3508 3509 3510 3511 3512 3513 3514 3515 3516 3517 3518 3519 3520 3521 3522 3523 3524 3525 3526 3527 3528 3529 3530 3531 3532 3533 3534 3535 3536 3537 3538 3539 3540 3541 3542 3543 3544 3545 3546 3547 3548 3549 3550 3551 3552 3553 3554 3555 3556 3557 3558 3559 3560 3561 3562 3563 3564 3565 3566 3567 3568 3569 3570 3571 3572 3573 3574 3575 3576 3577 3578 3579 3580 3581 3582 3583 3584 3585 3586 3587 3588 3589 3590 3591 3592 3593 3594 3595 3596 3597 3598 3599 3600 3601 3602 3603 3604 3605 3606 3607 3608 3609 3610 3611 3612 3613 3614 3615 3616 3617 3618 3619 3620 3621 3622 3623 3624 3625 3626 3627 3628 3629 3630 3631 3632 3633 3634 3635 3636 3637 3638 3639 3640 3641 3642 3643 3644 3645 3646 3647 3648 3649 3650 3651 3652 3653 3654 3655 3656 3657 3658 3659 3660
        else 
            return 1;
    }

    return 0;
}

static char *async_cache_tab[] = {
/* 0*/  "\011\000\002\002\002\004\002\006\004"
        "GDT HA %u, service %u, async. status %u/%lu unknown",
/* 1*/  "\011\000\002\002\002\004\002\006\004"
        "GDT HA %u, service %u, async. status %u/%lu unknown",
/* 2*/  "\005\000\002\006\004"
        "GDT HA %u, Host Drive %lu not ready",
/* 3*/  "\005\000\002\006\004"
        "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",
/* 4*/  "\005\000\002\006\004"
        "GDT HA %u, mirror update on Host Drive %lu failed",
/* 5*/  "\005\000\002\006\004"
        "GDT HA %u, Mirror Drive %lu failed",
/* 6*/  "\005\000\002\006\004"
        "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",
/* 7*/  "\005\000\002\006\004"
        "GDT HA %u, Host Drive %lu write protected",
/* 8*/  "\005\000\002\006\004"
        "GDT HA %u, media changed in Host Drive %lu",
/* 9*/  "\005\000\002\006\004"
        "GDT HA %u, Host Drive %lu is offline",
/*10*/  "\005\000\002\006\004"
        "GDT HA %u, media change of Mirror Drive %lu",
/*11*/  "\005\000\002\006\004"
        "GDT HA %u, Mirror Drive %lu is write protected",
/*12*/  "\005\000\002\006\004"
        "GDT HA %u, general error on Host Drive %lu. Please check the devices of this drive!",
/*13*/  "\007\000\002\006\002\010\002"
        "GDT HA %u, Array Drive %u: Cache Drive %u failed",
/*14*/  "\005\000\002\006\002"
        "GDT HA %u, Array Drive %u: FAIL state entered",
/*15*/  "\005\000\002\006\002"
        "GDT HA %u, Array Drive %u: error",
/*16*/  "\007\000\002\006\002\010\002"
        "GDT HA %u, Array Drive %u: failed drive replaced by Cache Drive %u",
/*17*/  "\005\000\002\006\002"
        "GDT HA %u, Array Drive %u: parity build failed",
/*18*/  "\005\000\002\006\002"
        "GDT HA %u, Array Drive %u: drive rebuild failed",
/*19*/  "\005\000\002\010\002"
        "GDT HA %u, Test of Hot Fix %u failed",
/*20*/  "\005\000\002\006\002"
        "GDT HA %u, Array Drive %u: drive build finished successfully",
/*21*/  "\005\000\002\006\002"
        "GDT HA %u, Array Drive %u: drive rebuild finished successfully",
/*22*/  "\007\000\002\006\002\010\002"
        "GDT HA %u, Array Drive %u: Hot Fix %u activated",
/*23*/  "\005\000\002\006\002"
        "GDT HA %u, Host Drive %u: processing of i/o aborted due to serious drive error",
/*24*/  "\005\000\002\010\002"
        "GDT HA %u, mirror update on Cache Drive %u completed",
/*25*/  "\005\000\002\010\002"
        "GDT HA %u, mirror update on Cache Drive %lu failed",
/*26*/  "\005\000\002\006\002"
        "GDT HA %u, Array Drive %u: drive rebuild started",
/*27*/  "\005\000\002\012\001"
        "GDT HA %u, Fault bus %u: SHELF OK detected",
/*28*/  "\005\000\002\012\001"
        "GDT HA %u, Fault bus %u: SHELF not OK detected",
/*29*/  "\007\000\002\012\001\013\001"
        "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug started",
/*30*/  "\007\000\002\012\001\013\001"
        "GDT HA %u, Fault bus %u, ID %u: new disk detected",
/*31*/  "\007\000\002\012\001\013\001"
        "GDT HA %u, Fault bus %u, ID %u: old disk detected",
/*32*/  "\007\000\002\012\001\013\001"
        "GDT HA %u, Fault bus %u, ID %u: plugging an active disk is invalid",
/*33*/  "\007\000\002\012\001\013\001"
        "GDT HA %u, Fault bus %u, ID %u: invalid device detected",
/*34*/  "\011\000\002\012\001\013\001\006\004"
        "GDT HA %u, Fault bus %u, ID %u: insufficient disk capacity (%lu MB required)",
/*35*/  "\007\000\002\012\001\013\001"
        "GDT HA %u, Fault bus %u, ID %u: disk write protected",
/*36*/  "\007\000\002\012\001\013\001"
        "GDT HA %u, Fault bus %u, ID %u: disk not available",
/*37*/  "\007\000\002\012\001\006\004"
        "GDT HA %u, Fault bus %u: swap detected (%lu)",
/*38*/  "\007\000\002\012\001\013\001"
        "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug finished successfully",
/*39*/  "\007\000\002\012\001\013\001"
        "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug aborted due to user Hot Plug",
/*40*/  "\007\000\002\012\001\013\001"
        "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug aborted",
/*41*/  "\007\000\002\012\001\013\001"
        "GDT HA %u, Fault bus %u, ID %u: Auto Hot Plug for Hot Fix started",
/*42*/  "\005\000\002\006\002"
        "GDT HA %u, Array Drive %u: drive build started",
/*43*/  "\003\000\002"
        "GDT HA %u, DRAM parity error detected",
/*44*/  "\005\000\002\006\002"
        "GDT HA %u, Mirror Drive %u: update started",
/*45*/  "\007\000\002\006\002\010\002"
        "GDT HA %u, Mirror Drive %u: Hot Fix %u activated",
/*46*/  "\005\000\002\006\002"
        "GDT HA %u, Array Drive %u: no matching Pool Hot Fix Drive available",
/*47*/  "\005\000\002\006\002"
        "GDT HA %u, Array Drive %u: Pool Hot Fix Drive available",
/*48*/  "\005\000\002\006\002"
        "GDT HA %u, Mirror Drive %u: no matching Pool Hot Fix Drive available",
/*49*/  "\005\000\002\006\002"
        "GDT HA %u, Mirror Drive %u: Pool Hot Fix Drive available",
/*50*/  "\007\000\002\012\001\013\001"
        "GDT HA %u, SCSI bus %u, ID %u: IGNORE_WIDE_RESIDUE message received",
/*51*/  "\005\000\002\006\002"
        "GDT HA %u, Array Drive %u: expand started",
/*52*/  "\005\000\002\006\002"
        "GDT HA %u, Array Drive %u: expand finished successfully",
/*53*/  "\005\000\002\006\002"
        "GDT HA %u, Array Drive %u: expand failed",
/*54*/  "\003\000\002"
        "GDT HA %u, CPU temperature critical",
/*55*/  "\003\000\002"
        "GDT HA %u, CPU temperature OK",
/*56*/  "\005\000\002\006\004"
        "GDT HA %u, Host drive %lu created",
/*57*/  "\005\000\002\006\002"
        "GDT HA %u, Array Drive %u: expand restarted",
/*58*/  "\005\000\002\006\002"
        "GDT HA %u, Array Drive %u: expand stopped",
/*59*/  "\005\000\002\010\002"
        "GDT HA %u, Mirror Drive %u: drive build quited",
/*60*/  "\005\000\002\006\002"
        "GDT HA %u, Array Drive %u: parity build quited",
/*61*/  "\005\000\002\006\002"
        "GDT HA %u, Array Drive %u: drive rebuild quited",
/*62*/  "\005\000\002\006\002"
        "GDT HA %u, Array Drive %u: parity verify started",
/*63*/  "\005\000\002\006\002"
        "GDT HA %u, Array Drive %u: parity verify done",
/*64*/  "\005\000\002\006\002"
        "GDT HA %u, Array Drive %u: parity verify failed",
/*65*/  "\005\000\002\006\002"
        "GDT HA %u, Array Drive %u: parity error detected",
/*66*/  "\005\000\002\006\002"
        "GDT HA %u, Array Drive %u: parity verify quited",
/*67*/  "\005\000\002\006\002"
        "GDT HA %u, Host Drive %u reserved",
/*68*/  "\005\000\002\006\002"
        "GDT HA %u, Host Drive %u mounted and released",
/*69*/  "\005\000\002\006\002"
        "GDT HA %u, Host Drive %u released",
/*70*/  "\003\000\002"
        "GDT HA %u, DRAM error detected and corrected with ECC",
/*71*/  "\003\000\002"
        "GDT HA %u, Uncorrectable DRAM error detected with ECC",
/*72*/  "\011\000\002\012\001\013\001\014\001"
        "GDT HA %u, SCSI bus %u, ID %u, LUN %u: reassigning block",
/*73*/  "\005\000\002\006\002"
        "GDT HA %u, Host drive %u resetted locally",
/*74*/  "\005\000\002\006\002"
        "GDT HA %u, Host drive %u resetted remotely",
/*75*/  "\003\000\002"
        "GDT HA %u, async. status 75 unknown",
};


3661
static int gdth_async_event(gdth_ha_str *ha)
L
Linus Torvalds 已提交
3662 3663 3664 3665 3666 3667
{
    gdth_cmd_str *cmdp;
    int cmd_index;

    cmdp= ha->pccb;
    TRACE2(("gdth_async_event() ha %d serv %d\n",
3668
            ha->hanum, ha->service));
L
Linus Torvalds 已提交
3669 3670 3671

    if (ha->service == SCREENSERVICE) {
        if (ha->status == MSG_REQUEST) {
3672
            while (gdth_test_busy(ha))
L
Linus Torvalds 已提交
3673 3674 3675
                gdth_delay(0);
            cmdp->Service       = SCREENSERVICE;
            cmdp->RequestBuffer = SCREEN_CMND;
3676 3677
            cmd_index = gdth_get_cmd_index(ha);
            gdth_set_sema0(ha);
L
Linus Torvalds 已提交
3678 3679 3680 3681 3682 3683 3684 3685 3686
            cmdp->OpCode        = GDT_READ;
            cmdp->BoardNode     = LOCALBOARD;
            cmdp->u.screen.reserved  = 0;
            cmdp->u.screen.su.msg.msg_handle= MSG_INV_HANDLE;
            cmdp->u.screen.su.msg.msg_addr  = ha->msg_phys;
            ha->cmd_offs_dpmem = 0;
            ha->cmd_len = GDTOFFSOF(gdth_cmd_str,u.screen.su.msg.msg_addr) 
                + sizeof(ulong64);
            ha->cmd_cnt = 0;
3687
            gdth_copy_command(ha);
L
Linus Torvalds 已提交
3688 3689 3690 3691 3692 3693 3694
            if (ha->type == GDT_EISA)
                printk("[EISA slot %d] ",(ushort)ha->brd_phys);
            else if (ha->type == GDT_ISA)
                printk("[DPMEM 0x%4X] ",(ushort)ha->brd_phys);
            else 
                printk("[PCI %d/%d] ",(ushort)(ha->brd_phys>>8),
                       (ushort)((ha->brd_phys>>3)&0x1f));
3695
            gdth_release_event(ha);
L
Linus Torvalds 已提交
3696 3697 3698 3699 3700 3701
        }

    } else {
        if (ha->type == GDT_PCIMPR && 
            (ha->fw_vers & 0xff) >= 0x1a) {
            ha->dvr.size = 0;
3702
            ha->dvr.eu.async.ionode = ha->hanum;
L
Linus Torvalds 已提交
3703 3704 3705 3706
            ha->dvr.eu.async.status  = ha->status;
            /* severity and event_string already set! */
        } else {        
            ha->dvr.size = sizeof(ha->dvr.eu.async);
3707
            ha->dvr.eu.async.ionode   = ha->hanum;
L
Linus Torvalds 已提交
3708 3709 3710 3711 3712 3713 3714 3715 3716 3717 3718 3719 3720 3721 3722 3723 3724 3725 3726 3727 3728 3729 3730 3731 3732 3733 3734 3735 3736 3737 3738 3739 3740 3741 3742 3743 3744 3745 3746 3747 3748 3749 3750 3751 3752 3753 3754 3755 3756 3757 3758 3759 3760 3761 3762 3763 3764 3765 3766 3767 3768 3769 3770 3771 3772 3773 3774 3775 3776 3777 3778 3779 3780 3781 3782
            ha->dvr.eu.async.service = ha->service;
            ha->dvr.eu.async.status  = ha->status;
            ha->dvr.eu.async.info    = ha->info;
            *(ulong32 *)ha->dvr.eu.async.scsi_coord  = ha->info2;
        }
        gdth_store_event( ha, ES_ASYNC, ha->service, &ha->dvr );
        gdth_log_event( &ha->dvr, NULL );
    
        /* new host drive from expand? */
        if (ha->service == CACHESERVICE && ha->status == 56) {
            TRACE2(("gdth_async_event(): new host drive %d created\n",
                    (ushort)ha->info));
            /* gdth_analyse_hdrive(hanum, (ushort)ha->info); */
        }   
    }
    return 1;
}

static void gdth_log_event(gdth_evt_data *dvr, char *buffer)
{
    gdth_stackframe stack;
    char *f = NULL;
    int i,j;

    TRACE2(("gdth_log_event()\n"));
    if (dvr->size == 0) {
        if (buffer == NULL) {
            printk("Adapter %d: %s\n",dvr->eu.async.ionode,dvr->event_string); 
        } else {
            sprintf(buffer,"Adapter %d: %s\n",
                dvr->eu.async.ionode,dvr->event_string); 
        }
    } else if (dvr->eu.async.service == CACHESERVICE && 
        INDEX_OK(dvr->eu.async.status, async_cache_tab)) {
        TRACE2(("GDT: Async. event cache service, event no.: %d\n",
                dvr->eu.async.status));
        
        f = async_cache_tab[dvr->eu.async.status];
        
        /* i: parameter to push, j: stack element to fill */
        for (j=0,i=1; i < f[0]; i+=2) {
            switch (f[i+1]) {
              case 4:
                stack.b[j++] = *(ulong32*)&dvr->eu.stream[(int)f[i]];
                break;
              case 2:
                stack.b[j++] = *(ushort*)&dvr->eu.stream[(int)f[i]];
                break;
              case 1:
                stack.b[j++] = *(unchar*)&dvr->eu.stream[(int)f[i]];
                break;
              default:
                break;
            }
        }
        
        if (buffer == NULL) {
            printk(&f[(int)f[0]],stack); 
            printk("\n");
        } else {
            sprintf(buffer,&f[(int)f[0]],stack); 
        }

    } else {
        if (buffer == NULL) {
            printk("GDT HA %u, Unknown async. event service %d event no. %d\n",
                   dvr->eu.async.ionode,dvr->eu.async.service,dvr->eu.async.status);
        } else {
            sprintf(buffer,"GDT HA %u, Unknown async. event service %d event no. %d",
                    dvr->eu.async.ionode,dvr->eu.async.service,dvr->eu.async.status);
        }
    }
}

#ifdef GDTH_STATISTICS
已提交
3783
static void gdth_timeout(ulong data)
L
Linus Torvalds 已提交
3784 3785 3786 3787 3788 3789
{
    ulong32 i;
    Scsi_Cmnd *nscp;
    gdth_ha_str *ha;
    ulong flags;

3790 3791
    BUG_ON(list_empty(&gdth_instances));

B
Boaz Harrosh 已提交
3792
    ha = list_first_entry(&gdth_instances, gdth_ha_str, list);
L
Linus Torvalds 已提交
3793 3794 3795 3796 3797 3798 3799 3800 3801 3802 3803 3804 3805 3806 3807 3808 3809 3810 3811
    spin_lock_irqsave(&ha->smp_lock, flags);

    for (act_stats=0,i=0; i<GDTH_MAXCMDS; ++i) 
        if (ha->cmd_tab[i].cmnd != UNUSED_CMND)
            ++act_stats;

    for (act_rq=0,nscp=ha->req_first; nscp; nscp=(Scsi_Cmnd*)nscp->SCp.ptr)
        ++act_rq;

    TRACE2(("gdth_to(): ints %d, ios %d, act_stats %d, act_rq %d\n",
            act_ints, act_ios, act_stats, act_rq));
    act_ints = act_ios = 0;

    gdth_timer.expires = jiffies + 30 * HZ;
    add_timer(&gdth_timer);
    spin_unlock_irqrestore(&ha->smp_lock, flags);
}
#endif

已提交
3812
static void __init internal_setup(char *str,int *ints)
L
Linus Torvalds 已提交
3813 3814 3815 3816 3817 3818 3819 3820 3821 3822 3823 3824 3825 3826 3827 3828 3829 3830 3831 3832 3833 3834 3835 3836 3837 3838 3839 3840 3841 3842 3843 3844 3845 3846 3847 3848 3849 3850 3851 3852 3853 3854 3855 3856 3857 3858 3859 3860 3861 3862 3863 3864 3865 3866 3867 3868 3869 3870 3871 3872 3873 3874 3875 3876 3877 3878 3879 3880 3881 3882 3883 3884 3885 3886 3887 3888 3889 3890 3891 3892 3893 3894 3895 3896 3897 3898 3899 3900
{
    int i, argc;
    char *cur_str, *argv;

    TRACE2(("internal_setup() str %s ints[0] %d\n", 
            str ? str:"NULL", ints ? ints[0]:0));

    /* read irq[] from ints[] */
    if (ints) {
        argc = ints[0];
        if (argc > 0) {
            if (argc > MAXHA)
                argc = MAXHA;
            for (i = 0; i < argc; ++i)
                irq[i] = ints[i+1];
        }
    }

    /* analyse string */
    argv = str;
    while (argv && (cur_str = strchr(argv, ':'))) {
        int val = 0, c = *++cur_str;
        
        if (c == 'n' || c == 'N')
            val = 0;
        else if (c == 'y' || c == 'Y')
            val = 1;
        else
            val = (int)simple_strtoul(cur_str, NULL, 0);

        if (!strncmp(argv, "disable:", 8))
            disable = val;
        else if (!strncmp(argv, "reserve_mode:", 13))
            reserve_mode = val;
        else if (!strncmp(argv, "reverse_scan:", 13))
            reverse_scan = val;
        else if (!strncmp(argv, "hdr_channel:", 12))
            hdr_channel = val;
        else if (!strncmp(argv, "max_ids:", 8))
            max_ids = val;
        else if (!strncmp(argv, "rescan:", 7))
            rescan = val;
        else if (!strncmp(argv, "shared_access:", 14))
            shared_access = val;
        else if (!strncmp(argv, "probe_eisa_isa:", 15))
            probe_eisa_isa = val;
        else if (!strncmp(argv, "reserve_list:", 13)) {
            reserve_list[0] = val;
            for (i = 1; i < MAX_RES_ARGS; i++) {
                cur_str = strchr(cur_str, ',');
                if (!cur_str)
                    break;
                if (!isdigit((int)*++cur_str)) {
                    --cur_str;          
                    break;
                }
                reserve_list[i] = 
                    (int)simple_strtoul(cur_str, NULL, 0);
            }
            if (!cur_str)
                break;
            argv = ++cur_str;
            continue;
        }

        if ((argv = strchr(argv, ',')))
            ++argv;
    }
}

int __init option_setup(char *str)
{
    int ints[MAXHA];
    char *cur = str;
    int i = 1;

    TRACE2(("option_setup() str %s\n", str ? str:"NULL")); 

    while (cur && isdigit(*cur) && i <= MAXHA) {
        ints[i++] = simple_strtoul(cur, NULL, 0);
        if ((cur = strchr(cur, ',')) != NULL) cur++;
    }

    ints[0] = i - 1;
    internal_setup(cur, ints);
    return 1;
}

3901
static const char *gdth_ctr_name(gdth_ha_str *ha)
L
Linus Torvalds 已提交
3902 3903 3904 3905 3906 3907 3908 3909 3910 3911 3912 3913 3914 3915 3916
{
    TRACE2(("gdth_ctr_name()\n"));

    if (ha->type == GDT_EISA) {
        switch (ha->stype) {
          case GDT3_ID:
            return("GDT3000/3020");
          case GDT3A_ID:
            return("GDT3000A/3020A/3050A");
          case GDT3B_ID:
            return("GDT3000B/3010A");
        }
    } else if (ha->type == GDT_ISA) {
        return("GDT2000/2020");
    } else if (ha->type == GDT_PCI) {
3917
        switch (ha->pdev->device) {
L
Linus Torvalds 已提交
3918 3919 3920 3921 3922 3923 3924 3925 3926 3927 3928
          case PCI_DEVICE_ID_VORTEX_GDT60x0:
            return("GDT6000/6020/6050");
          case PCI_DEVICE_ID_VORTEX_GDT6000B:
            return("GDT6000B/6010");
        }
    } 
    /* new controllers (GDT_PCINEW, GDT_PCIMPR, ..) use board_info IOCTL! */

    return("");
}

已提交
3929
static const char *gdth_info(struct Scsi_Host *shp)
L
Linus Torvalds 已提交
3930
{
3931
    gdth_ha_str *ha = shost_priv(shp);
L
Linus Torvalds 已提交
3932 3933 3934 3935 3936

    TRACE2(("gdth_info()\n"));
    return ((const char *)ha->binfo.type_string);
}

已提交
3937
static int gdth_eh_bus_reset(Scsi_Cmnd *scp)
L
Linus Torvalds 已提交
3938
{
3939 3940
    gdth_ha_str *ha = shost_priv(scp->device->host);
    int i;
L
Linus Torvalds 已提交
3941 3942 3943 3944 3945 3946
    ulong flags;
    Scsi_Cmnd *cmnd;
    unchar b;

    TRACE2(("gdth_eh_bus_reset()\n"));

C
Christoph Hellwig 已提交
3947
    b = scp->device->channel;
L
Linus Torvalds 已提交
3948 3949 3950 3951 3952 3953 3954 3955 3956 3957 3958 3959 3960 3961 3962 3963

    /* clear command tab */
    spin_lock_irqsave(&ha->smp_lock, flags);
    for (i = 0; i < GDTH_MAXCMDS; ++i) {
        cmnd = ha->cmd_tab[i].cmnd;
        if (!SPECIAL_SCP(cmnd) && cmnd->device->channel == b)
            ha->cmd_tab[i].cmnd = UNUSED_CMND;
    }
    spin_unlock_irqrestore(&ha->smp_lock, flags);

    if (b == ha->virt_bus) {
        /* host drives */
        for (i = 0; i < MAX_HDRIVES; ++i) {
            if (ha->hdr[i].present) {
                spin_lock_irqsave(&ha->smp_lock, flags);
                gdth_polling = TRUE;
3964
                while (gdth_test_busy(ha))
L
Linus Torvalds 已提交
3965
                    gdth_delay(0);
3966
                if (gdth_internal_cmd(ha, CACHESERVICE,
L
Linus Torvalds 已提交
3967 3968 3969 3970 3971 3972 3973 3974 3975 3976 3977 3978
                                      GDT_CLUST_RESET, i, 0, 0))
                    ha->hdr[i].cluster_type &= ~CLUSTER_RESERVED;
                gdth_polling = FALSE;
                spin_unlock_irqrestore(&ha->smp_lock, flags);
            }
        }
    } else {
        /* raw devices */
        spin_lock_irqsave(&ha->smp_lock, flags);
        for (i = 0; i < MAXID; ++i)
            ha->raw[BUS_L2P(ha,b)].io_cnt[i] = 0;
        gdth_polling = TRUE;
3979
        while (gdth_test_busy(ha))
L
Linus Torvalds 已提交
3980
            gdth_delay(0);
3981
        gdth_internal_cmd(ha, SCSIRAWSERVICE, GDT_RESET_BUS,
L
Linus Torvalds 已提交
3982 3983
                          BUS_L2P(ha,b), 0, 0);
        gdth_polling = FALSE;
3984
        spin_unlock_irqrestore(&ha->smp_lock, flags);
L
Linus Torvalds 已提交
3985 3986 3987 3988
    }
    return SUCCESS;
}

已提交
3989
static int gdth_bios_param(struct scsi_device *sdev,struct block_device *bdev,sector_t cap,int *ip)
L
Linus Torvalds 已提交
3990 3991
{
    unchar b, t;
3992
    gdth_ha_str *ha = shost_priv(sdev->host);
L
Linus Torvalds 已提交
3993 3994 3995 3996 3997
    struct scsi_device *sd;
    unsigned capacity;

    sd = sdev;
    capacity = cap;
C
Christoph Hellwig 已提交
3998
    b = sd->channel;
L
Linus Torvalds 已提交
3999
    t = sd->id;
4000
    TRACE2(("gdth_bios_param() ha %d bus %d target %d\n", ha->hanum, b, t));
L
Linus Torvalds 已提交
4001 4002 4003 4004 4005 4006 4007 4008 4009 4010 4011 4012 4013 4014 4015 4016 4017

    if (b != ha->virt_bus || ha->hdr[t].heads == 0) {
        /* raw device or host drive without mapping information */
        TRACE2(("Evaluate mapping\n"));
        gdth_eval_mapping(capacity,&ip[2],&ip[0],&ip[1]);
    } else {
        ip[0] = ha->hdr[t].heads;
        ip[1] = ha->hdr[t].secs;
        ip[2] = capacity / ip[0] / ip[1];
    }

    TRACE2(("gdth_bios_param(): %d heads, %d secs, %d cyls\n",
            ip[0],ip[1],ip[2]));
    return 0;
}


4018 4019
static int gdth_queuecommand(struct scsi_cmnd *scp,
				void (*done)(struct scsi_cmnd *))
L
Linus Torvalds 已提交
4020
{
4021
    gdth_ha_str *ha = shost_priv(scp->device->host);
4022
    struct gdth_cmndinfo *cmndinfo;
L
Linus Torvalds 已提交
4023 4024

    TRACE(("gdth_queuecommand() cmd 0x%x\n", scp->cmnd[0]));
4025 4026 4027 4028

    cmndinfo = gdth_get_cmndinfo(ha);
    BUG_ON(!cmndinfo);

4029
    scp->scsi_done = done;
4030
    gdth_update_timeout(scp, scp->timeout_per_command * 6);
4031
    cmndinfo->priority = DEFAULT_PRI;
4032 4033 4034 4035 4036

    gdth_set_bufflen(scp, scsi_bufflen(scp));
    gdth_set_sg_count(scp, scsi_sg_count(scp));
    gdth_set_sglist(scp, scsi_sglist(scp));

4037 4038 4039 4040 4041 4042 4043
    return __gdth_queuecommand(ha, scp, cmndinfo);
}

static int __gdth_queuecommand(gdth_ha_str *ha, struct scsi_cmnd *scp,
				struct gdth_cmndinfo *cmndinfo)
{
    scp->host_scribble = (unsigned char *)cmndinfo;
4044 4045 4046
    cmndinfo->wait_for_completion = 1;
    cmndinfo->phase = -1;
    cmndinfo->OpCode = -1;
L
Linus Torvalds 已提交
4047 4048 4049 4050 4051

#ifdef GDTH_STATISTICS
    ++act_ios;
#endif

4052
    gdth_putq(ha, scp, cmndinfo->priority);
4053
    gdth_next(ha);
L
Linus Torvalds 已提交
4054 4055 4056 4057 4058 4059 4060 4061
    return 0;
}


static int gdth_open(struct inode *inode, struct file *filep)
{
    gdth_ha_str *ha;

B
Boaz Harrosh 已提交
4062
    list_for_each_entry(ha, &gdth_instances, list) {
L
Linus Torvalds 已提交
4063
        if (!ha->sdev)
B
Boaz Harrosh 已提交
4064
            ha->sdev = scsi_get_host_dev(ha->shost);
L
Linus Torvalds 已提交
4065 4066 4067 4068 4069 4070 4071 4072 4073 4074 4075 4076 4077 4078 4079 4080 4081 4082
    }

    TRACE(("gdth_open()\n"));
    return 0;
}

static int gdth_close(struct inode *inode, struct file *filep)
{
    TRACE(("gdth_close()\n"));
    return 0;
}

static int ioc_event(void __user *arg)
{
    gdth_ioctl_event evt;
    gdth_ha_str *ha;
    ulong flags;

B
Boaz Harrosh 已提交
4083 4084 4085 4086
    if (copy_from_user(&evt, arg, sizeof(gdth_ioctl_event)))
        return -EFAULT;
    ha = gdth_find_ha(evt.ionode);
    if (!ha)
L
Linus Torvalds 已提交
4087 4088 4089 4090 4091 4092 4093 4094 4095 4096 4097 4098 4099 4100 4101 4102 4103 4104 4105 4106 4107 4108 4109 4110 4111 4112 4113 4114 4115 4116 4117 4118 4119 4120
        return -EFAULT;

    if (evt.erase == 0xff) {
        if (evt.event.event_source == ES_TEST)
            evt.event.event_data.size=sizeof(evt.event.event_data.eu.test); 
        else if (evt.event.event_source == ES_DRIVER)
            evt.event.event_data.size=sizeof(evt.event.event_data.eu.driver); 
        else if (evt.event.event_source == ES_SYNC)
            evt.event.event_data.size=sizeof(evt.event.event_data.eu.sync); 
        else
            evt.event.event_data.size=sizeof(evt.event.event_data.eu.async);
        spin_lock_irqsave(&ha->smp_lock, flags);
        gdth_store_event(ha, evt.event.event_source, evt.event.event_idx,
                         &evt.event.event_data);
        spin_unlock_irqrestore(&ha->smp_lock, flags);
    } else if (evt.erase == 0xfe) {
        gdth_clear_events();
    } else if (evt.erase == 0) {
        evt.handle = gdth_read_event(ha, evt.handle, &evt.event);
    } else {
        gdth_readapp_event(ha, evt.erase, &evt.event);
    }     
    if (copy_to_user(arg, &evt, sizeof(gdth_ioctl_event)))
        return -EFAULT;
    return 0;
}

static int ioc_lockdrv(void __user *arg)
{
    gdth_ioctl_lockdrv ldrv;
    unchar i, j;
    ulong flags;
    gdth_ha_str *ha;

B
Boaz Harrosh 已提交
4121
    if (copy_from_user(&ldrv, arg, sizeof(gdth_ioctl_lockdrv)))
L
Linus Torvalds 已提交
4122
        return -EFAULT;
B
Boaz Harrosh 已提交
4123 4124 4125 4126
    ha = gdth_find_ha(ldrv.ionode);
    if (!ha)
        return -EFAULT;

L
Linus Torvalds 已提交
4127 4128 4129 4130 4131 4132 4133 4134
    for (i = 0; i < ldrv.drive_cnt && i < MAX_HDRIVES; ++i) {
        j = ldrv.drives[i];
        if (j >= MAX_HDRIVES || !ha->hdr[j].present)
            continue;
        if (ldrv.lock) {
            spin_lock_irqsave(&ha->smp_lock, flags);
            ha->hdr[j].lock = 1;
            spin_unlock_irqrestore(&ha->smp_lock, flags);
4135 4136
            gdth_wait_completion(ha, ha->bus_cnt, j);
            gdth_stop_timeout(ha, ha->bus_cnt, j);
L
Linus Torvalds 已提交
4137 4138 4139 4140
        } else {
            spin_lock_irqsave(&ha->smp_lock, flags);
            ha->hdr[j].lock = 0;
            spin_unlock_irqrestore(&ha->smp_lock, flags);
4141 4142
            gdth_start_timeout(ha, ha->bus_cnt, j);
            gdth_next(ha);
L
Linus Torvalds 已提交
4143 4144 4145 4146 4147 4148 4149 4150 4151 4152
        }
    } 
    return 0;
}

static int ioc_resetdrv(void __user *arg, char *cmnd)
{
    gdth_ioctl_reset res;
    gdth_cmd_str cmd;
    gdth_ha_str *ha;
4153
    int rval;
L
Linus Torvalds 已提交
4154 4155

    if (copy_from_user(&res, arg, sizeof(gdth_ioctl_reset)) ||
B
Boaz Harrosh 已提交
4156 4157 4158 4159
        res.number >= MAX_HDRIVES)
        return -EFAULT;
    ha = gdth_find_ha(res.ionode);
    if (!ha)
L
Linus Torvalds 已提交
4160
        return -EFAULT;
4161

L
Linus Torvalds 已提交
4162 4163 4164 4165 4166 4167 4168 4169 4170
    if (!ha->hdr[res.number].present)
        return 0;
    memset(&cmd, 0, sizeof(gdth_cmd_str));
    cmd.Service = CACHESERVICE;
    cmd.OpCode = GDT_CLUST_RESET;
    if (ha->cache_feat & GDT_64BIT)
        cmd.u.cache64.DeviceNo = res.number;
    else
        cmd.u.cache.DeviceNo = res.number;
4171 4172 4173 4174 4175

    rval = __gdth_execute(ha->sdev, &cmd, cmnd, 30, NULL);
    if (rval < 0)
        return rval;
    res.status = rval;
L
Linus Torvalds 已提交
4176 4177 4178 4179 4180 4181 4182 4183 4184 4185 4186

    if (copy_to_user(arg, &res, sizeof(gdth_ioctl_reset)))
        return -EFAULT;
    return 0;
}

static int ioc_general(void __user *arg, char *cmnd)
{
    gdth_ioctl_general gen;
    char *buf = NULL;
    ulong64 paddr; 
4187 4188
    gdth_ha_str *ha;
    int rval;
B
Boaz Harrosh 已提交
4189 4190 4191 4192 4193

    if (copy_from_user(&gen, arg, sizeof(gdth_ioctl_general)))
        return -EFAULT;
    ha = gdth_find_ha(gen.ionode);
    if (!ha)
L
Linus Torvalds 已提交
4194 4195
        return -EFAULT;
    if (gen.data_len + gen.sense_len != 0) {
4196
        if (!(buf = gdth_ioctl_alloc(ha, gen.data_len + gen.sense_len,
L
Linus Torvalds 已提交
4197 4198 4199 4200
                                     FALSE, &paddr)))
            return -EFAULT;
        if (copy_from_user(buf, arg + sizeof(gdth_ioctl_general),  
                           gen.data_len + gen.sense_len)) {
4201
            gdth_ioctl_free(ha, gen.data_len+gen.sense_len, buf, paddr);
L
Linus Torvalds 已提交
4202 4203 4204 4205 4206 4207 4208 4209 4210 4211 4212 4213 4214 4215 4216 4217 4218 4219 4220 4221 4222 4223 4224 4225 4226 4227 4228 4229 4230 4231 4232 4233 4234 4235 4236 4237 4238 4239 4240 4241 4242 4243 4244 4245 4246 4247 4248 4249 4250 4251 4252 4253 4254 4255 4256 4257 4258 4259 4260 4261 4262 4263 4264 4265 4266 4267 4268 4269 4270 4271 4272 4273 4274
            return -EFAULT;
        }

        if (gen.command.OpCode == GDT_IOCTL) {
            gen.command.u.ioctl.p_param = paddr;
        } else if (gen.command.Service == CACHESERVICE) {
            if (ha->cache_feat & GDT_64BIT) {
                /* copy elements from 32-bit IOCTL structure */
                gen.command.u.cache64.BlockCnt = gen.command.u.cache.BlockCnt;
                gen.command.u.cache64.BlockNo = gen.command.u.cache.BlockNo;
                gen.command.u.cache64.DeviceNo = gen.command.u.cache.DeviceNo;
                /* addresses */
                if (ha->cache_feat & SCATTER_GATHER) {
                    gen.command.u.cache64.DestAddr = (ulong64)-1;
                    gen.command.u.cache64.sg_canz = 1;
                    gen.command.u.cache64.sg_lst[0].sg_ptr = paddr;
                    gen.command.u.cache64.sg_lst[0].sg_len = gen.data_len;
                    gen.command.u.cache64.sg_lst[1].sg_len = 0;
                } else {
                    gen.command.u.cache64.DestAddr = paddr;
                    gen.command.u.cache64.sg_canz = 0;
                }
            } else {
                if (ha->cache_feat & SCATTER_GATHER) {
                    gen.command.u.cache.DestAddr = 0xffffffff;
                    gen.command.u.cache.sg_canz = 1;
                    gen.command.u.cache.sg_lst[0].sg_ptr = (ulong32)paddr;
                    gen.command.u.cache.sg_lst[0].sg_len = gen.data_len;
                    gen.command.u.cache.sg_lst[1].sg_len = 0;
                } else {
                    gen.command.u.cache.DestAddr = paddr;
                    gen.command.u.cache.sg_canz = 0;
                }
            }
        } else if (gen.command.Service == SCSIRAWSERVICE) {
            if (ha->raw_feat & GDT_64BIT) {
                /* copy elements from 32-bit IOCTL structure */
                char cmd[16];
                gen.command.u.raw64.sense_len = gen.command.u.raw.sense_len;
                gen.command.u.raw64.bus = gen.command.u.raw.bus;
                gen.command.u.raw64.lun = gen.command.u.raw.lun;
                gen.command.u.raw64.target = gen.command.u.raw.target;
                memcpy(cmd, gen.command.u.raw.cmd, 16);
                memcpy(gen.command.u.raw64.cmd, cmd, 16);
                gen.command.u.raw64.clen = gen.command.u.raw.clen;
                gen.command.u.raw64.sdlen = gen.command.u.raw.sdlen;
                gen.command.u.raw64.direction = gen.command.u.raw.direction;
                /* addresses */
                if (ha->raw_feat & SCATTER_GATHER) {
                    gen.command.u.raw64.sdata = (ulong64)-1;
                    gen.command.u.raw64.sg_ranz = 1;
                    gen.command.u.raw64.sg_lst[0].sg_ptr = paddr;
                    gen.command.u.raw64.sg_lst[0].sg_len = gen.data_len;
                    gen.command.u.raw64.sg_lst[1].sg_len = 0;
                } else {
                    gen.command.u.raw64.sdata = paddr;
                    gen.command.u.raw64.sg_ranz = 0;
                }
                gen.command.u.raw64.sense_data = paddr + gen.data_len;
            } else {
                if (ha->raw_feat & SCATTER_GATHER) {
                    gen.command.u.raw.sdata = 0xffffffff;
                    gen.command.u.raw.sg_ranz = 1;
                    gen.command.u.raw.sg_lst[0].sg_ptr = (ulong32)paddr;
                    gen.command.u.raw.sg_lst[0].sg_len = gen.data_len;
                    gen.command.u.raw.sg_lst[1].sg_len = 0;
                } else {
                    gen.command.u.raw.sdata = paddr;
                    gen.command.u.raw.sg_ranz = 0;
                }
                gen.command.u.raw.sense_data = (ulong32)paddr + gen.data_len;
            }
        } else {
4275
            gdth_ioctl_free(ha, gen.data_len+gen.sense_len, buf, paddr);
L
Linus Torvalds 已提交
4276 4277 4278 4279
            return -EFAULT;
        }
    }

4280 4281 4282 4283
    rval = __gdth_execute(ha->sdev, &gen.command, cmnd, gen.timeout, &gen.info);
    if (rval < 0)
        return rval;
    gen.status = rval;
L
Linus Torvalds 已提交
4284 4285 4286

    if (copy_to_user(arg + sizeof(gdth_ioctl_general), buf, 
                     gen.data_len + gen.sense_len)) {
4287
        gdth_ioctl_free(ha, gen.data_len+gen.sense_len, buf, paddr);
L
Linus Torvalds 已提交
4288 4289 4290 4291
        return -EFAULT; 
    } 
    if (copy_to_user(arg, &gen, 
        sizeof(gdth_ioctl_general) - sizeof(gdth_cmd_str))) {
4292
        gdth_ioctl_free(ha, gen.data_len+gen.sense_len, buf, paddr);
L
Linus Torvalds 已提交
4293 4294
        return -EFAULT;
    }
4295
    gdth_ioctl_free(ha, gen.data_len+gen.sense_len, buf, paddr);
L
Linus Torvalds 已提交
4296 4297 4298 4299 4300 4301 4302 4303 4304
    return 0;
}
 
static int ioc_hdrlist(void __user *arg, char *cmnd)
{
    gdth_ioctl_rescan *rsc;
    gdth_cmd_str *cmd;
    gdth_ha_str *ha;
    unchar i;
4305
    int rc = -ENOMEM;
4306 4307
    u32 cluster_type = 0;

L
Linus Torvalds 已提交
4308 4309 4310
    rsc = kmalloc(sizeof(*rsc), GFP_KERNEL);
    cmd = kmalloc(sizeof(*cmd), GFP_KERNEL);
    if (!rsc || !cmd)
4311
        goto free_fail;
L
Linus Torvalds 已提交
4312 4313

    if (copy_from_user(rsc, arg, sizeof(gdth_ioctl_rescan)) ||
B
Boaz Harrosh 已提交
4314
        (NULL == (ha = gdth_find_ha(rsc->ionode)))) {
L
Linus Torvalds 已提交
4315
        rc = -EFAULT;
4316
        goto free_fail;
L
Linus Torvalds 已提交
4317 4318 4319 4320 4321 4322 4323 4324 4325 4326 4327 4328 4329 4330 4331 4332 4333 4334 4335
    }
    memset(cmd, 0, sizeof(gdth_cmd_str));
   
    for (i = 0; i < MAX_HDRIVES; ++i) { 
        if (!ha->hdr[i].present) {
            rsc->hdr_list[i].bus = 0xff; 
            continue;
        } 
        rsc->hdr_list[i].bus = ha->virt_bus;
        rsc->hdr_list[i].target = i;
        rsc->hdr_list[i].lun = 0;
        rsc->hdr_list[i].cluster_type = ha->hdr[i].cluster_type;
        if (ha->hdr[i].cluster_type & CLUSTER_DRIVE) { 
            cmd->Service = CACHESERVICE;
            cmd->OpCode = GDT_CLUST_INFO;
            if (ha->cache_feat & GDT_64BIT)
                cmd->u.cache64.DeviceNo = i;
            else
                cmd->u.cache.DeviceNo = i;
4336 4337
            if (__gdth_execute(ha->sdev, cmd, cmnd, 30, &cluster_type) == S_OK)
                rsc->hdr_list[i].cluster_type = cluster_type;
L
Linus Torvalds 已提交
4338 4339
        }
    } 
4340

L
Linus Torvalds 已提交
4341 4342 4343
    if (copy_to_user(arg, rsc, sizeof(gdth_ioctl_rescan)))
        rc = -EFAULT;
    else
4344
        rc = 0;
L
Linus Torvalds 已提交
4345 4346 4347 4348 4349 4350 4351 4352 4353 4354 4355 4356 4357

free_fail:
    kfree(rsc);
    kfree(cmd);
    return rc;
}

static int ioc_rescan(void __user *arg, char *cmnd)
{
    gdth_ioctl_rescan *rsc;
    gdth_cmd_str *cmd;
    ushort i, status, hdr_cnt;
    ulong32 info;
4358
    int cyls, hds, secs;
L
Linus Torvalds 已提交
4359 4360 4361 4362 4363 4364 4365
    int rc = -ENOMEM;
    ulong flags;
    gdth_ha_str *ha; 

    rsc = kmalloc(sizeof(*rsc), GFP_KERNEL);
    cmd = kmalloc(sizeof(*cmd), GFP_KERNEL);
    if (!cmd || !rsc)
4366
        goto free_fail;
L
Linus Torvalds 已提交
4367 4368

    if (copy_from_user(rsc, arg, sizeof(gdth_ioctl_rescan)) ||
B
Boaz Harrosh 已提交
4369
        (NULL == (ha = gdth_find_ha(rsc->ionode)))) {
4370 4371
        rc = -EFAULT;
        goto free_fail;
L
Linus Torvalds 已提交
4372 4373 4374 4375 4376 4377 4378 4379 4380 4381 4382 4383 4384
    }
    memset(cmd, 0, sizeof(gdth_cmd_str));

    if (rsc->flag == 0) {
        /* old method: re-init. cache service */
        cmd->Service = CACHESERVICE;
        if (ha->cache_feat & GDT_64BIT) {
            cmd->OpCode = GDT_X_INIT_HOST;
            cmd->u.cache64.DeviceNo = LINUX_OS;
        } else {
            cmd->OpCode = GDT_INIT;
            cmd->u.cache.DeviceNo = LINUX_OS;
        }
4385 4386

        status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info);
L
Linus Torvalds 已提交
4387 4388 4389 4390 4391 4392 4393 4394 4395 4396 4397 4398 4399 4400
        i = 0;
        hdr_cnt = (status == S_OK ? (ushort)info : 0);
    } else {
        i = rsc->hdr_no;
        hdr_cnt = i + 1;
    }

    for (; i < hdr_cnt && i < MAX_HDRIVES; ++i) {
        cmd->Service = CACHESERVICE;
        cmd->OpCode = GDT_INFO;
        if (ha->cache_feat & GDT_64BIT) 
            cmd->u.cache64.DeviceNo = i;
        else 
            cmd->u.cache.DeviceNo = i;
4401 4402 4403

        status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info);

L
Linus Torvalds 已提交
4404 4405 4406 4407 4408 4409 4410 4411 4412 4413 4414 4415 4416 4417 4418 4419 4420 4421 4422 4423 4424 4425 4426 4427 4428 4429 4430 4431 4432 4433 4434
        spin_lock_irqsave(&ha->smp_lock, flags);
        rsc->hdr_list[i].bus = ha->virt_bus;
        rsc->hdr_list[i].target = i;
        rsc->hdr_list[i].lun = 0;
        if (status != S_OK) {
            ha->hdr[i].present = FALSE;
        } else {
            ha->hdr[i].present = TRUE;
            ha->hdr[i].size = info;
            /* evaluate mapping */
            ha->hdr[i].size &= ~SECS32;
            gdth_eval_mapping(ha->hdr[i].size,&cyls,&hds,&secs); 
            ha->hdr[i].heads = hds;
            ha->hdr[i].secs = secs;
            /* round size */
            ha->hdr[i].size = cyls * hds * secs;
        }
        spin_unlock_irqrestore(&ha->smp_lock, flags);
        if (status != S_OK)
            continue; 
        
        /* extended info, if GDT_64BIT, for drives > 2 TB */
        /* but we need ha->info2, not yet stored in scp->SCp */

        /* devtype, cluster info, R/W attribs */
        cmd->Service = CACHESERVICE;
        cmd->OpCode = GDT_DEVTYPE;
        if (ha->cache_feat & GDT_64BIT) 
            cmd->u.cache64.DeviceNo = i;
        else
            cmd->u.cache.DeviceNo = i;
4435 4436 4437

        status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info);

L
Linus Torvalds 已提交
4438 4439 4440 4441 4442 4443 4444 4445 4446 4447
        spin_lock_irqsave(&ha->smp_lock, flags);
        ha->hdr[i].devtype = (status == S_OK ? (ushort)info : 0);
        spin_unlock_irqrestore(&ha->smp_lock, flags);

        cmd->Service = CACHESERVICE;
        cmd->OpCode = GDT_CLUST_INFO;
        if (ha->cache_feat & GDT_64BIT) 
            cmd->u.cache64.DeviceNo = i;
        else
            cmd->u.cache.DeviceNo = i;
4448 4449 4450

        status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info);

L
Linus Torvalds 已提交
4451 4452 4453 4454 4455 4456 4457 4458 4459 4460 4461 4462
        spin_lock_irqsave(&ha->smp_lock, flags);
        ha->hdr[i].cluster_type = 
            ((status == S_OK && !shared_access) ? (ushort)info : 0);
        spin_unlock_irqrestore(&ha->smp_lock, flags);
        rsc->hdr_list[i].cluster_type = ha->hdr[i].cluster_type;

        cmd->Service = CACHESERVICE;
        cmd->OpCode = GDT_RW_ATTRIBS;
        if (ha->cache_feat & GDT_64BIT) 
            cmd->u.cache64.DeviceNo = i;
        else
            cmd->u.cache.DeviceNo = i;
4463 4464 4465

        status = __gdth_execute(ha->sdev, cmd, cmnd, 30, &info);

L
Linus Torvalds 已提交
4466 4467 4468 4469 4470 4471 4472 4473
        spin_lock_irqsave(&ha->smp_lock, flags);
        ha->hdr[i].rw_attribs = (status == S_OK ? (ushort)info : 0);
        spin_unlock_irqrestore(&ha->smp_lock, flags);
    }
 
    if (copy_to_user(arg, rsc, sizeof(gdth_ioctl_rescan)))
        rc = -EFAULT;
    else
4474
        rc = 0;
L
Linus Torvalds 已提交
4475 4476 4477 4478 4479 4480 4481 4482 4483 4484 4485 4486 4487 4488 4489 4490 4491 4492 4493 4494 4495 4496 4497 4498 4499 4500 4501 4502 4503 4504 4505 4506 4507 4508 4509 4510 4511 4512 4513 4514 4515 4516 4517 4518 4519 4520 4521 4522 4523 4524 4525 4526 4527 4528

free_fail:
    kfree(rsc);
    kfree(cmd);
    return rc;
}
  
static int gdth_ioctl(struct inode *inode, struct file *filep,
                      unsigned int cmd, unsigned long arg)
{
    gdth_ha_str *ha; 
    Scsi_Cmnd *scp;
    ulong flags;
    char cmnd[MAX_COMMAND_SIZE];   
    void __user *argp = (void __user *)arg;

    memset(cmnd, 0xff, 12);
    
    TRACE(("gdth_ioctl() cmd 0x%x\n", cmd));
 
    switch (cmd) {
      case GDTIOCTL_CTRCNT:
      { 
        int cnt = gdth_ctr_count;
        if (put_user(cnt, (int __user *)argp))
                return -EFAULT;
        break;
      }

      case GDTIOCTL_DRVERS:
      { 
        int ver = (GDTH_VERSION<<8) | GDTH_SUBVERSION;
        if (put_user(ver, (int __user *)argp))
                return -EFAULT;
        break;
      }
      
      case GDTIOCTL_OSVERS:
      { 
        gdth_ioctl_osvers osv; 

        osv.version = (unchar)(LINUX_VERSION_CODE >> 16);
        osv.subversion = (unchar)(LINUX_VERSION_CODE >> 8);
        osv.revision = (ushort)(LINUX_VERSION_CODE & 0xff);
        if (copy_to_user(argp, &osv, sizeof(gdth_ioctl_osvers)))
                return -EFAULT;
        break;
      }

      case GDTIOCTL_CTRTYPE:
      { 
        gdth_ioctl_ctrtype ctrt;
        
        if (copy_from_user(&ctrt, argp, sizeof(gdth_ioctl_ctrtype)) ||
B
Boaz Harrosh 已提交
4529
            (NULL == (ha = gdth_find_ha(ctrt.ionode))))
L
Linus Torvalds 已提交
4530
            return -EFAULT;
B
Boaz Harrosh 已提交
4531

L
Linus Torvalds 已提交
4532 4533 4534 4535 4536 4537 4538 4539 4540
        if (ha->type == GDT_ISA || ha->type == GDT_EISA) {
            ctrt.type = (unchar)((ha->stype>>20) - 0x10);
        } else {
            if (ha->type != GDT_PCIMPR) {
                ctrt.type = (unchar)((ha->stype<<4) + 6);
            } else {
                ctrt.type = 
                    (ha->oem_id == OEM_ID_INTEL ? 0xfd : 0xfe);
                if (ha->stype >= 0x300)
4541
                    ctrt.ext_type = 0x6000 | ha->pdev->subsystem_device;
L
Linus Torvalds 已提交
4542 4543 4544
                else 
                    ctrt.ext_type = 0x6000 | ha->stype;
            }
4545 4546
            ctrt.device_id = ha->pdev->device;
            ctrt.sub_device_id = ha->pdev->subsystem_device;
L
Linus Torvalds 已提交
4547 4548 4549 4550 4551 4552 4553 4554 4555 4556 4557 4558 4559 4560 4561 4562 4563 4564 4565 4566 4567 4568 4569
        }
        ctrt.info = ha->brd_phys;
        ctrt.oem_id = ha->oem_id;
        if (copy_to_user(argp, &ctrt, sizeof(gdth_ioctl_ctrtype)))
            return -EFAULT;
        break;
      }
        
      case GDTIOCTL_GENERAL:
        return ioc_general(argp, cmnd);

      case GDTIOCTL_EVENT:
        return ioc_event(argp);

      case GDTIOCTL_LOCKDRV:
        return ioc_lockdrv(argp);

      case GDTIOCTL_LOCKCHN:
      {
        gdth_ioctl_lockchn lchn;
        unchar i, j;

        if (copy_from_user(&lchn, argp, sizeof(gdth_ioctl_lockchn)) ||
B
Boaz Harrosh 已提交
4570
            (NULL == (ha = gdth_find_ha(lchn.ionode))))
L
Linus Torvalds 已提交
4571
            return -EFAULT;
B
Boaz Harrosh 已提交
4572

L
Linus Torvalds 已提交
4573 4574 4575 4576 4577 4578 4579
        i = lchn.channel;
        if (i < ha->bus_cnt) {
            if (lchn.lock) {
                spin_lock_irqsave(&ha->smp_lock, flags);
                ha->raw[i].lock = 1;
                spin_unlock_irqrestore(&ha->smp_lock, flags);
                for (j = 0; j < ha->tid_cnt; ++j) {
4580 4581
                    gdth_wait_completion(ha, i, j);
                    gdth_stop_timeout(ha, i, j);
L
Linus Torvalds 已提交
4582 4583 4584 4585 4586 4587
                }
            } else {
                spin_lock_irqsave(&ha->smp_lock, flags);
                ha->raw[i].lock = 0;
                spin_unlock_irqrestore(&ha->smp_lock, flags);
                for (j = 0; j < ha->tid_cnt; ++j) {
4588 4589
                    gdth_start_timeout(ha, i, j);
                    gdth_next(ha);
L
Linus Torvalds 已提交
4590 4591 4592 4593 4594 4595 4596 4597 4598 4599 4600 4601 4602 4603 4604
                }
            }
        } 
        break;
      }

      case GDTIOCTL_RESCAN:
        return ioc_rescan(argp, cmnd);

      case GDTIOCTL_HDRLIST:
        return ioc_hdrlist(argp, cmnd);

      case GDTIOCTL_RESET_BUS:
      {
        gdth_ioctl_reset res;
4605
        int rval;
L
Linus Torvalds 已提交
4606 4607

        if (copy_from_user(&res, argp, sizeof(gdth_ioctl_reset)) ||
B
Boaz Harrosh 已提交
4608
            (NULL == (ha = gdth_find_ha(res.ionode))))
L
Linus Torvalds 已提交
4609 4610
            return -EFAULT;

4611
        scp  = kzalloc(sizeof(*scp), GFP_KERNEL);
L
Linus Torvalds 已提交
4612 4613
        if (!scp)
            return -ENOMEM;
4614
        scp->device = ha->sdev;
L
Linus Torvalds 已提交
4615
        scp->cmd_len = 12;
C
Christoph Hellwig 已提交
4616
        scp->device->channel = res.number;
L
Linus Torvalds 已提交
4617 4618
        rval = gdth_eh_bus_reset(scp);
        res.status = (rval == SUCCESS ? S_OK : S_GENERR);
4619
        kfree(scp);
4620

L
Linus Torvalds 已提交
4621 4622 4623 4624 4625 4626 4627 4628 4629 4630 4631 4632 4633 4634 4635 4636
        if (copy_to_user(argp, &res, sizeof(gdth_ioctl_reset)))
            return -EFAULT;
        break;
      }

      case GDTIOCTL_RESET_DRV:
        return ioc_resetdrv(argp, cmnd);

      default:
        break; 
    }
    return 0;
}


/* flush routine */
4637
static void gdth_flush(gdth_ha_str *ha)
L
Linus Torvalds 已提交
4638 4639 4640 4641 4642 4643
{
    int             i;
    gdth_cmd_str    gdtcmd;
    char            cmnd[MAX_COMMAND_SIZE];   
    memset(cmnd, 0xff, MAX_COMMAND_SIZE);

4644
    TRACE2(("gdth_flush() hanum %d\n", ha->hanum));
L
Linus Torvalds 已提交
4645 4646 4647 4648 4649 4650 4651 4652 4653 4654 4655 4656 4657 4658 4659

    for (i = 0; i < MAX_HDRIVES; ++i) {
        if (ha->hdr[i].present) {
            gdtcmd.BoardNode = LOCALBOARD;
            gdtcmd.Service = CACHESERVICE;
            gdtcmd.OpCode = GDT_FLUSH;
            if (ha->cache_feat & GDT_64BIT) { 
                gdtcmd.u.cache64.DeviceNo = i;
                gdtcmd.u.cache64.BlockNo = 1;
                gdtcmd.u.cache64.sg_canz = 0;
            } else {
                gdtcmd.u.cache.DeviceNo = i;
                gdtcmd.u.cache.BlockNo = 1;
                gdtcmd.u.cache.sg_canz = 0;
            }
4660
            TRACE2(("gdth_flush(): flush ha %d drive %d\n", ha->hanum, i));
4661

4662
            gdth_execute(ha->shost, &gdtcmd, cmnd, 30, NULL);
L
Linus Torvalds 已提交
4663 4664 4665 4666
        }
    }
}

4667 4668 4669 4670 4671 4672 4673 4674 4675
/* configure lun */
static int gdth_slave_configure(struct scsi_device *sdev)
{
    scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
    sdev->skip_ms_page_3f = 1;
    sdev->skip_ms_page_8 = 1;
    return 0;
}

4676
static struct scsi_host_template gdth_template = {
L
Linus Torvalds 已提交
4677 4678 4679 4680
        .name                   = "GDT SCSI Disk Array Controller",
        .info                   = gdth_info, 
        .queuecommand           = gdth_queuecommand,
        .eh_bus_reset_handler   = gdth_eh_bus_reset,
4681
        .slave_configure        = gdth_slave_configure,
L
Linus Torvalds 已提交
4682
        .bios_param             = gdth_bios_param,
4683 4684
        .proc_info              = gdth_proc_info,
        .proc_name              = "gdth",
L
Linus Torvalds 已提交
4685 4686 4687 4688 4689 4690 4691 4692
        .can_queue              = GDTH_MAXCMDS,
        .this_id                = -1,
        .sg_tablesize           = GDTH_MAXSG,
        .cmd_per_lun            = GDTH_MAXC_P_L,
        .unchecked_isa_dma      = 1,
        .use_clustering         = ENABLE_CLUSTERING,
};

4693
#ifdef CONFIG_ISA
A
Adrian Bunk 已提交
4694
static int __init gdth_isa_probe_one(ulong32 isa_bios)
4695 4696 4697 4698
{
	struct Scsi_Host *shp;
	gdth_ha_str *ha;
	dma_addr_t scratch_dma_handle = 0;
B
Boaz Harrosh 已提交
4699
	int error, i;
4700 4701 4702 4703

	if (!gdth_search_isa(isa_bios))
		return -ENXIO;

4704
	shp = scsi_host_alloc(&gdth_template, sizeof(gdth_ha_str));
4705 4706
	if (!shp)
		return -ENOMEM;
4707
	ha = shost_priv(shp);
4708 4709 4710 4711 4712 4713 4714 4715 4716 4717 4718 4719 4720 4721 4722 4723 4724 4725 4726 4727 4728 4729 4730 4731 4732 4733 4734

	error = -ENODEV;
	if (!gdth_init_isa(isa_bios,ha))
		goto out_host_put;

	/* controller found and initialized */
	printk("Configuring GDT-ISA HA at BIOS 0x%05X IRQ %u DRQ %u\n",
		isa_bios, ha->irq, ha->drq);

	error = request_irq(ha->irq, gdth_interrupt, IRQF_DISABLED, "gdth", ha);
	if (error) {
		printk("GDT-ISA: Unable to allocate IRQ\n");
		goto out_host_put;
	}

	error = request_dma(ha->drq, "gdth");
	if (error) {
		printk("GDT-ISA: Unable to allocate DMA channel\n");
		goto out_free_irq;
	}

	set_dma_mode(ha->drq,DMA_MODE_CASCADE);
	enable_dma(ha->drq);
	shp->unchecked_isa_dma = 1;
	shp->irq = ha->irq;
	shp->dma_channel = ha->drq;

B
Boaz Harrosh 已提交
4735
	ha->hanum = gdth_ctr_count++;
4736
	ha->shost = shp;
4737

4738
	ha->pccb = &ha->cmdext;
4739 4740 4741 4742 4743 4744 4745 4746 4747 4748 4749 4750 4751 4752 4753 4754 4755 4756 4757 4758 4759 4760 4761 4762 4763 4764 4765 4766 4767 4768 4769 4770 4771 4772 4773 4774
	ha->ccb_phys = 0L;
	ha->pdev = NULL;

	error = -ENOMEM;

	ha->pscratch = pci_alloc_consistent(ha->pdev, GDTH_SCRATCH,
						&scratch_dma_handle);
	if (!ha->pscratch)
		goto out_dec_counters;
	ha->scratch_phys = scratch_dma_handle;

	ha->pmsg = pci_alloc_consistent(ha->pdev, sizeof(gdth_msg_str),
						&scratch_dma_handle);
	if (!ha->pmsg)
		goto out_free_pscratch;
	ha->msg_phys = scratch_dma_handle;

#ifdef INT_COAL
	ha->coal_stat = pci_alloc_consistent(ha->pdev,
				sizeof(gdth_coal_status) * MAXOFFSETS,
				&scratch_dma_handle);
	if (!ha->coal_stat)
		goto out_free_pmsg;
	ha->coal_stat_phys = scratch_dma_handle;
#endif

	ha->scratch_busy = FALSE;
	ha->req_first = NULL;
	ha->tid_cnt = MAX_HDRIVES;
	if (max_ids > 0 && max_ids < ha->tid_cnt)
		ha->tid_cnt = max_ids;
	for (i = 0; i < GDTH_MAXCMDS; ++i)
		ha->cmd_tab[i].cmnd = UNUSED_CMND;
	ha->scan_mode = rescan ? 0x10 : 0;

	error = -ENODEV;
4775
	if (!gdth_search_drives(ha)) {
4776 4777 4778 4779 4780 4781 4782 4783 4784 4785 4786 4787 4788
		printk("GDT-ISA: Error during device scan\n");
		goto out_free_coal_stat;
	}

	if (hdr_channel < 0 || hdr_channel > ha->bus_cnt)
		hdr_channel = ha->bus_cnt;
	ha->virt_bus = hdr_channel;

	if (ha->cache_feat & ha->raw_feat & ha->screen_feat & GDT_64BIT)
		shp->max_cmd_len = 16;

	shp->max_id      = ha->tid_cnt;
	shp->max_lun     = MAXLUN;
C
Christoph Hellwig 已提交
4789
	shp->max_channel = ha->bus_cnt;
4790 4791

	spin_lock_init(&ha->smp_lock);
4792
	gdth_enable_int(ha);
4793

4794 4795 4796 4797
	error = scsi_add_host(shp, NULL);
	if (error)
		goto out_free_coal_stat;
	list_add_tail(&ha->list, &gdth_instances);
4798 4799 4800

	scsi_scan_host(shp);

4801 4802 4803 4804 4805 4806 4807 4808 4809 4810 4811 4812 4813 4814 4815 4816 4817 4818
	return 0;

 out_free_coal_stat:
#ifdef INT_COAL
	pci_free_consistent(ha->pdev, sizeof(gdth_coal_status) * MAXOFFSETS,
				ha->coal_stat, ha->coal_stat_phys);
 out_free_pmsg:
#endif
	pci_free_consistent(ha->pdev, sizeof(gdth_msg_str),
				ha->pmsg, ha->msg_phys);
 out_free_pscratch:
	pci_free_consistent(ha->pdev, GDTH_SCRATCH,
				ha->pscratch, ha->scratch_phys);
 out_dec_counters:
	gdth_ctr_count--;
 out_free_irq:
	free_irq(ha->irq, ha);
 out_host_put:
4819
	scsi_host_put(shp);
4820 4821 4822 4823
	return error;
}
#endif /* CONFIG_ISA */

4824
#ifdef CONFIG_EISA
A
Adrian Bunk 已提交
4825
static int __init gdth_eisa_probe_one(ushort eisa_slot)
4826 4827 4828 4829
{
	struct Scsi_Host *shp;
	gdth_ha_str *ha;
	dma_addr_t scratch_dma_handle = 0;
B
Boaz Harrosh 已提交
4830
	int error, i;
4831 4832 4833 4834

	if (!gdth_search_eisa(eisa_slot))
		return -ENXIO;

4835
	shp = scsi_host_alloc(&gdth_template, sizeof(gdth_ha_str));
4836 4837
	if (!shp)
		return -ENOMEM;
4838
	ha = shost_priv(shp);
4839 4840 4841 4842 4843 4844 4845 4846 4847 4848 4849 4850 4851 4852 4853 4854 4855 4856 4857

	error = -ENODEV;
	if (!gdth_init_eisa(eisa_slot,ha))
		goto out_host_put;

	/* controller found and initialized */
	printk("Configuring GDT-EISA HA at Slot %d IRQ %u\n",
		eisa_slot >> 12, ha->irq);

	error = request_irq(ha->irq, gdth_interrupt, IRQF_DISABLED, "gdth", ha);
	if (error) {
		printk("GDT-EISA: Unable to allocate IRQ\n");
		goto out_host_put;
	}

	shp->unchecked_isa_dma = 0;
	shp->irq = ha->irq;
	shp->dma_channel = 0xff;

B
Boaz Harrosh 已提交
4858
	ha->hanum = gdth_ctr_count++;
4859 4860 4861
	ha->shost = shp;

	TRACE2(("EISA detect Bus 0: hanum %d\n", ha->hanum));
4862

4863
	ha->pccb = &ha->cmdext;
4864 4865 4866 4867 4868 4869 4870 4871 4872 4873 4874 4875 4876 4877 4878 4879 4880 4881 4882 4883 4884 4885 4886 4887 4888 4889 4890 4891 4892 4893 4894 4895 4896 4897 4898 4899 4900 4901 4902 4903
	ha->ccb_phys = 0L;

	error = -ENOMEM;

	ha->pdev = NULL;
	ha->pscratch = pci_alloc_consistent(ha->pdev, GDTH_SCRATCH,
						&scratch_dma_handle);
	if (!ha->pscratch)
		goto out_free_irq;
	ha->scratch_phys = scratch_dma_handle;

	ha->pmsg = pci_alloc_consistent(ha->pdev, sizeof(gdth_msg_str),
						&scratch_dma_handle);
	if (!ha->pmsg)
		goto out_free_pscratch;
	ha->msg_phys = scratch_dma_handle;

#ifdef INT_COAL
	ha->coal_stat = pci_alloc_consistent(ha->pdev,
			sizeof(gdth_coal_status) * MAXOFFSETS,
			&scratch_dma_handle);
	if (!ha->coal_stat)
		goto out_free_pmsg;
	ha->coal_stat_phys = scratch_dma_handle;
#endif

	ha->ccb_phys = pci_map_single(ha->pdev,ha->pccb,
			sizeof(gdth_cmd_str), PCI_DMA_BIDIRECTIONAL);
	if (!ha->ccb_phys)
		goto out_free_coal_stat;

	ha->scratch_busy = FALSE;
	ha->req_first = NULL;
	ha->tid_cnt = MAX_HDRIVES;
	if (max_ids > 0 && max_ids < ha->tid_cnt)
		ha->tid_cnt = max_ids;
	for (i = 0; i < GDTH_MAXCMDS; ++i)
		ha->cmd_tab[i].cmnd = UNUSED_CMND;
	ha->scan_mode = rescan ? 0x10 : 0;

4904
	if (!gdth_search_drives(ha)) {
4905 4906 4907 4908 4909 4910 4911 4912 4913 4914 4915 4916 4917 4918
		printk("GDT-EISA: Error during device scan\n");
		error = -ENODEV;
		goto out_free_ccb_phys;
	}

	if (hdr_channel < 0 || hdr_channel > ha->bus_cnt)
		hdr_channel = ha->bus_cnt;
	ha->virt_bus = hdr_channel;

	if (ha->cache_feat & ha->raw_feat & ha->screen_feat & GDT_64BIT)
		shp->max_cmd_len = 16;

	shp->max_id      = ha->tid_cnt;
	shp->max_lun     = MAXLUN;
C
Christoph Hellwig 已提交
4919
	shp->max_channel = ha->bus_cnt;
4920 4921

	spin_lock_init(&ha->smp_lock);
4922
	gdth_enable_int(ha);
4923 4924 4925 4926 4927

	error = scsi_add_host(shp, NULL);
	if (error)
		goto out_free_coal_stat;
	list_add_tail(&ha->list, &gdth_instances);
4928 4929 4930

	scsi_scan_host(shp);

4931 4932 4933 4934 4935 4936 4937 4938 4939 4940 4941 4942 4943 4944 4945 4946 4947 4948 4949 4950
	return 0;

 out_free_ccb_phys:
	pci_unmap_single(ha->pdev,ha->ccb_phys, sizeof(gdth_cmd_str),
			PCI_DMA_BIDIRECTIONAL);
 out_free_coal_stat:
#ifdef INT_COAL
	pci_free_consistent(ha->pdev, sizeof(gdth_coal_status) * MAXOFFSETS,
				ha->coal_stat, ha->coal_stat_phys);
 out_free_pmsg:
#endif
	pci_free_consistent(ha->pdev, sizeof(gdth_msg_str),
				ha->pmsg, ha->msg_phys);
 out_free_pscratch:
	pci_free_consistent(ha->pdev, GDTH_SCRATCH,
				ha->pscratch, ha->scratch_phys);
 out_free_irq:
	free_irq(ha->irq, ha);
	gdth_ctr_count--;
 out_host_put:
4951
	scsi_host_put(shp);
4952 4953 4954
	return error;
}
#endif /* CONFIG_EISA */
4955

4956
#ifdef CONFIG_PCI
A
Adrian Bunk 已提交
4957
static int __init gdth_pci_probe_one(gdth_pci_str *pcistr, int ctr)
4958 4959 4960 4961
{
	struct Scsi_Host *shp;
	gdth_ha_str *ha;
	dma_addr_t scratch_dma_handle = 0;
B
Boaz Harrosh 已提交
4962
	int error, i;
4963

4964
	shp = scsi_host_alloc(&gdth_template, sizeof(gdth_ha_str));
4965 4966
	if (!shp)
		return -ENOMEM;
4967
	ha = shost_priv(shp);
4968 4969 4970 4971 4972 4973 4974 4975 4976 4977 4978 4979 4980 4981 4982 4983 4984 4985 4986 4987 4988 4989

	error = -ENODEV;
	if (!gdth_init_pci(&pcistr[ctr],ha))
		goto out_host_put;

	/* controller found and initialized */
	printk("Configuring GDT-PCI HA at %d/%d IRQ %u\n",
		pcistr[ctr].pdev->bus->number,
		PCI_SLOT(pcistr[ctr].pdev->devfn),
		ha->irq);

	error = request_irq(ha->irq, gdth_interrupt,
				IRQF_DISABLED|IRQF_SHARED, "gdth", ha);
	if (error) {
		printk("GDT-PCI: Unable to allocate IRQ\n");
		goto out_host_put;
	}

	shp->unchecked_isa_dma = 0;
	shp->irq = ha->irq;
	shp->dma_channel = 0xff;

B
Boaz Harrosh 已提交
4990
	ha->hanum = gdth_ctr_count++;
4991
	ha->shost = shp;
4992

4993
	ha->pccb = &ha->cmdext;
4994 4995 4996 4997 4998 4999 5000 5001 5002 5003 5004 5005 5006 5007 5008 5009 5010 5011 5012 5013 5014 5015 5016 5017 5018 5019 5020 5021 5022 5023 5024 5025 5026 5027 5028
	ha->ccb_phys = 0L;

	error = -ENOMEM;

	ha->pscratch = pci_alloc_consistent(ha->pdev, GDTH_SCRATCH,
						&scratch_dma_handle);
	if (!ha->pscratch)
		goto out_free_irq;
	ha->scratch_phys = scratch_dma_handle;

	ha->pmsg = pci_alloc_consistent(ha->pdev, sizeof(gdth_msg_str),
					&scratch_dma_handle);
	if (!ha->pmsg)
		goto out_free_pscratch;
	ha->msg_phys = scratch_dma_handle;

#ifdef INT_COAL
	ha->coal_stat = pci_alloc_consistent(ha->pdev,
			sizeof(gdth_coal_status) * MAXOFFSETS,
			&scratch_dma_handle);
	if (!ha->coal_stat)
		goto out_free_pmsg;
	ha->coal_stat_phys = scratch_dma_handle;
#endif

	ha->scratch_busy = FALSE;
	ha->req_first = NULL;
	ha->tid_cnt = pcistr[ctr].pdev->device >= 0x200 ? MAXID : MAX_HDRIVES;
	if (max_ids > 0 && max_ids < ha->tid_cnt)
		ha->tid_cnt = max_ids;
	for (i = 0; i < GDTH_MAXCMDS; ++i)
		ha->cmd_tab[i].cmnd = UNUSED_CMND;
	ha->scan_mode = rescan ? 0x10 : 0;

	error = -ENODEV;
5029 5030
	if (!gdth_search_drives(ha)) {
		printk("GDT-PCI %d: Error during device scan\n", ha->hanum);
5031 5032 5033 5034 5035 5036 5037 5038 5039 5040 5041 5042
		goto out_free_coal_stat;
	}

	if (hdr_channel < 0 || hdr_channel > ha->bus_cnt)
		hdr_channel = ha->bus_cnt;
	ha->virt_bus = hdr_channel;

	/* 64-bit DMA only supported from FW >= x.43 */
	if (!(ha->cache_feat & ha->raw_feat & ha->screen_feat & GDT_64BIT) ||
	    !ha->dma64_support) {
		if (pci_set_dma_mask(pcistr[ctr].pdev, DMA_32BIT_MASK)) {
			printk(KERN_WARNING "GDT-PCI %d: "
5043
				"Unable to set 32-bit DMA\n", ha->hanum);
5044 5045 5046 5047 5048
				goto out_free_coal_stat;
		}
	} else {
		shp->max_cmd_len = 16;
		if (!pci_set_dma_mask(pcistr[ctr].pdev, DMA_64BIT_MASK)) {
5049
			printk("GDT-PCI %d: 64-bit DMA enabled\n", ha->hanum);
5050 5051
		} else if (pci_set_dma_mask(pcistr[ctr].pdev, DMA_32BIT_MASK)) {
			printk(KERN_WARNING "GDT-PCI %d: "
5052
				"Unable to set 64/32-bit DMA\n", ha->hanum);
5053 5054 5055 5056 5057 5058
			goto out_free_coal_stat;
		}
	}

	shp->max_id      = ha->tid_cnt;
	shp->max_lun     = MAXLUN;
C
Christoph Hellwig 已提交
5059
	shp->max_channel = ha->bus_cnt;
5060 5061

	spin_lock_init(&ha->smp_lock);
5062
	gdth_enable_int(ha);
5063 5064 5065 5066 5067

	error = scsi_add_host(shp, &pcistr[ctr].pdev->dev);
	if (error)
		goto out_free_coal_stat;
	list_add_tail(&ha->list, &gdth_instances);
5068 5069 5070

	scsi_scan_host(shp);

5071 5072 5073 5074 5075 5076 5077 5078 5079 5080 5081 5082 5083 5084 5085 5086 5087
	return 0;

 out_free_coal_stat:
#ifdef INT_COAL
	pci_free_consistent(ha->pdev, sizeof(gdth_coal_status) * MAXOFFSETS,
				ha->coal_stat, ha->coal_stat_phys);
 out_free_pmsg:
#endif
	pci_free_consistent(ha->pdev, sizeof(gdth_msg_str),
				ha->pmsg, ha->msg_phys);
 out_free_pscratch:
	pci_free_consistent(ha->pdev, GDTH_SCRATCH,
				ha->pscratch, ha->scratch_phys);
 out_free_irq:
	free_irq(ha->irq, ha);
	gdth_ctr_count--;
 out_host_put:
5088
	scsi_host_put(shp);
5089 5090 5091 5092
	return error;
}
#endif /* CONFIG_PCI */

5093 5094 5095 5096 5097 5098 5099 5100
static void gdth_remove_one(gdth_ha_str *ha)
{
	struct Scsi_Host *shp = ha->shost;

	TRACE2(("gdth_remove_one()\n"));

	scsi_remove_host(shp);

5101 5102
	gdth_flush(ha);

5103 5104 5105 5106 5107 5108 5109 5110 5111 5112 5113 5114 5115 5116 5117 5118 5119 5120 5121 5122 5123 5124 5125 5126 5127 5128 5129 5130 5131 5132
	if (ha->sdev) {
		scsi_free_host_dev(ha->sdev);
		ha->sdev = NULL;
	}

	if (shp->irq)
		free_irq(shp->irq,ha);

#ifdef CONFIG_ISA
	if (shp->dma_channel != 0xff)
		free_dma(shp->dma_channel);
#endif
#ifdef INT_COAL
	if (ha->coal_stat)
		pci_free_consistent(ha->pdev, sizeof(gdth_coal_status) *
			MAXOFFSETS, ha->coal_stat, ha->coal_stat_phys);
#endif
	if (ha->pscratch)
		pci_free_consistent(ha->pdev, GDTH_SCRATCH,
			ha->pscratch, ha->scratch_phys);
	if (ha->pmsg)
		pci_free_consistent(ha->pdev, sizeof(gdth_msg_str),
			ha->pmsg, ha->msg_phys);
	if (ha->ccb_phys)
		pci_unmap_single(ha->pdev,ha->ccb_phys,
			sizeof(gdth_cmd_str),PCI_DMA_BIDIRECTIONAL);

	scsi_host_put(shp);
}

5133 5134 5135 5136 5137 5138 5139 5140 5141 5142 5143 5144 5145 5146 5147 5148 5149 5150
static int gdth_halt(struct notifier_block *nb, ulong event, void *buf)
{
	gdth_ha_str *ha;

	TRACE2(("gdth_halt() event %d\n", (int)event));
	if (event != SYS_RESTART && event != SYS_HALT && event != SYS_POWER_OFF)
		return NOTIFY_DONE;

	list_for_each_entry(ha, &gdth_instances, list)
		gdth_flush(ha);

	return NOTIFY_OK;
}

static struct notifier_block gdth_notifier = {
    gdth_halt, NULL, 0
};

5151 5152 5153 5154 5155 5156 5157 5158 5159 5160 5161 5162 5163 5164 5165 5166 5167 5168 5169 5170 5171
static int __init gdth_init(void)
{
	if (disable) {
		printk("GDT-HA: Controller driver disabled from"
                       " command line !\n");
		return 0;
	}

	printk("GDT-HA: Storage RAID Controller Driver. Version: %s\n",
	       GDTH_VERSION_STR);

	/* initializations */
	gdth_polling = TRUE;
	gdth_clear_events();

	/* As default we do not probe for EISA or ISA controllers */
	if (probe_eisa_isa) {
		/* scanning for controllers, at first: ISA controller */
#ifdef CONFIG_ISA
		ulong32 isa_bios;
		for (isa_bios = 0xc8000UL; isa_bios <= 0xd8000UL;
B
Boaz Harrosh 已提交
5172
		                isa_bios += 0x8000UL)
5173 5174 5175 5176 5177 5178
			gdth_isa_probe_one(isa_bios);
#endif
#ifdef CONFIG_EISA
		{
			ushort eisa_slot;
			for (eisa_slot = 0x1000; eisa_slot <= 0x8000;
B
Boaz Harrosh 已提交
5179
			                         eisa_slot += 0x1000)
5180 5181 5182 5183 5184 5185 5186 5187 5188 5189 5190 5191 5192 5193
				gdth_eisa_probe_one(eisa_slot);
		}
#endif
	}

#ifdef CONFIG_PCI
	/* scanning for PCI controllers */
	{
		gdth_pci_str pcistr[MAXHA];
		int cnt,ctr;

		cnt = gdth_search_pci(pcistr);
		printk("GDT-HA: Found %d PCI Storage RAID Controllers\n", cnt);
		gdth_sort_pci(pcistr,cnt);
B
Boaz Harrosh 已提交
5194
		for (ctr = 0; ctr < cnt; ++ctr)
5195 5196 5197 5198 5199
			gdth_pci_probe_one(pcistr, ctr);
	}
#endif /* CONFIG_PCI */

	TRACE2(("gdth_detect() %d controller detected\n", gdth_ctr_count));
5200 5201 5202 5203

	if (list_empty(&gdth_instances))
		return -ENODEV;

5204 5205 5206 5207 5208 5209 5210 5211 5212 5213 5214 5215 5216 5217 5218 5219 5220 5221
#ifdef GDTH_STATISTICS
	TRACE2(("gdth_detect(): Initializing timer !\n"));
	init_timer(&gdth_timer);
	gdth_timer.expires = jiffies + HZ;
	gdth_timer.data = 0L;
	gdth_timer.function = gdth_timeout;
	add_timer(&gdth_timer);
#endif
	major = register_chrdev(0,"gdth", &gdth_fops);
	register_reboot_notifier(&gdth_notifier);
	gdth_polling = FALSE;
	return 0;
}

static void __exit gdth_exit(void)
{
	gdth_ha_str *ha;

5222 5223
	unregister_chrdev(major, "gdth");
	unregister_reboot_notifier(&gdth_notifier);
5224 5225

#ifdef GDTH_STATISTICS
5226
	del_timer_sync(&gdth_timer);
5227
#endif
5228 5229 5230

	list_for_each_entry(ha, &gdth_instances, list)
		gdth_remove_one(ha);
5231 5232 5233 5234 5235
}

module_init(gdth_init);
module_exit(gdth_exit);

L
Linus Torvalds 已提交
5236 5237 5238
#ifndef MODULE
__setup("gdth=", option_setup);
#endif