[SCSI] NCR53C9x: remove driver

Acked-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

2 files changed, 0 insertions, 4322 deletions

diff --git a/drivers/scsi/NCR53C9x.c b/drivers/scsi/NCR53C9x.c
deleted file mode 100644
index 5b0efc903918..000000000000
--- a/drivers/scsi/NCR53C9x.c
+++ /dev/null
@@ -1,3654 +0,0 @@
-/* NCR53C9x.c:  Generic SCSI driver code for NCR53C9x chips.
- *
- * Originally esp.c : EnhancedScsiProcessor Sun SCSI driver code.
- *
- * Copyright (C) 1995, 1998 David S. Miller (davem@caip.rutgers.edu)
- *
- * Most DMA dependencies put in driver specific files by 
- * Jesper Skov (jskov@cygnus.co.uk)
- *
- * Set up to use esp_read/esp_write (preprocessor macros in NCR53c9x.h) by
- * Tymm Twillman (tymm@coe.missouri.edu)
- */
-
-/* TODO:
- *
- * 1) Maybe disable parity checking in config register one for SCSI1
- *    targets.  (Gilmore says parity error on the SBus can lock up
- *    old sun4c's)
- * 2) Add support for DMA2 pipelining.
- * 3) Add tagged queueing.
- * 4) Maybe change use of "esp" to something more "NCR"'ish.
- */
-
-#include <linux/module.h>
-
-#include <linux/kernel.h>
-#include <linux/delay.h>
-#include <linux/types.h>
-#include <linux/string.h>
-#include <linux/slab.h>
-#include <linux/blkdev.h>
-#include <linux/interrupt.h>
-#include <linux/proc_fs.h>
-#include <linux/stat.h>
-#include <linux/init.h>
-
-#include "scsi.h"
-#include <scsi/scsi_host.h>
-#include "NCR53C9x.h"
-
-#include <asm/system.h>
-#include <asm/ptrace.h>
-#include <asm/pgtable.h>
-#include <asm/io.h>
-#include <asm/irq.h>
-
-/* Command phase enumeration. */
-enum {
-	not_issued    = 0x00,  /* Still in the issue_SC queue.          */
-
-	/* Various forms of selecting a target. */
-#define in_slct_mask    0x10
-	in_slct_norm  = 0x10,  /* ESP is arbitrating, normal selection  */
-	in_slct_stop  = 0x11,  /* ESP will select, then stop with IRQ   */
-	in_slct_msg   = 0x12,  /* select, then send a message           */
-	in_slct_tag   = 0x13,  /* select and send tagged queue msg      */
-	in_slct_sneg  = 0x14,  /* select and acquire sync capabilities  */
-
-	/* Any post selection activity. */
-#define in_phases_mask  0x20
-	in_datain     = 0x20,  /* Data is transferring from the bus     */
-	in_dataout    = 0x21,  /* Data is transferring to the bus       */
-	in_data_done  = 0x22,  /* Last DMA data operation done (maybe)  */
-	in_msgin      = 0x23,  /* Eating message from target            */
-	in_msgincont  = 0x24,  /* Eating more msg bytes from target     */
-	in_msgindone  = 0x25,  /* Decide what to do with what we got    */
-	in_msgout     = 0x26,  /* Sending message to target             */
-	in_msgoutdone = 0x27,  /* Done sending msg out                  */
-	in_cmdbegin   = 0x28,  /* Sending cmd after abnormal selection  */
-	in_cmdend     = 0x29,  /* Done sending slow cmd                 */
-	in_status     = 0x2a,  /* Was in status phase, finishing cmd    */
-	in_freeing    = 0x2b,  /* freeing the bus for cmd cmplt or disc */
-	in_the_dark   = 0x2c,  /* Don't know what bus phase we are in   */
-
-	/* Special states, ie. not normal bus transitions... */
-#define in_spec_mask    0x80
-	in_abortone   = 0x80,  /* Aborting one command currently        */
-	in_abortall   = 0x81,  /* Blowing away all commands we have     */
-	in_resetdev   = 0x82,  /* SCSI target reset in progress         */
-	in_resetbus   = 0x83,  /* SCSI bus reset in progress            */
-	in_tgterror   = 0x84,  /* Target did something stupid           */
-};
-
-enum {
-	/* Zero has special meaning, see skipahead[12]. */
-/*0*/	do_never,
-
-/*1*/	do_phase_determine,
-/*2*/	do_reset_bus,
-/*3*/	do_reset_complete,
-/*4*/	do_work_bus,
-/*5*/	do_intr_end
-};
-
-/* The master ring of all esp hosts we are managing in this driver. */
-static struct NCR_ESP *espchain;
-int nesps = 0, esps_in_use = 0, esps_running = 0;
-EXPORT_SYMBOL(nesps);
-EXPORT_SYMBOL(esps_running);
-
-irqreturn_t esp_intr(int irq, void *dev_id);
-
-/* Debugging routines */
-static struct esp_cmdstrings {
-	unchar cmdchar;
-	char *text;
-} esp_cmd_strings[] = {
-	/* Miscellaneous */
-	{ ESP_CMD_NULL, "ESP_NOP", },
-	{ ESP_CMD_FLUSH, "FIFO_FLUSH", },
-	{ ESP_CMD_RC, "RSTESP", },
-	{ ESP_CMD_RS, "RSTSCSI", },
-	/* Disconnected State Group */
-	{ ESP_CMD_RSEL, "RESLCTSEQ", },
-	{ ESP_CMD_SEL, "SLCTNATN", },
-	{ ESP_CMD_SELA, "SLCTATN", },
-	{ ESP_CMD_SELAS, "SLCTATNSTOP", },
-	{ ESP_CMD_ESEL, "ENSLCTRESEL", },
-	{ ESP_CMD_DSEL, "DISSELRESEL", },
-	{ ESP_CMD_SA3, "SLCTATN3", },
-	{ ESP_CMD_RSEL3, "RESLCTSEQ", },
-	/* Target State Group */
-	{ ESP_CMD_SMSG, "SNDMSG", },
-	{ ESP_CMD_SSTAT, "SNDSTATUS", },
-	{ ESP_CMD_SDATA, "SNDDATA", },
-	{ ESP_CMD_DSEQ, "DISCSEQ", },
-	{ ESP_CMD_TSEQ, "TERMSEQ", },
-	{ ESP_CMD_TCCSEQ, "TRGTCMDCOMPSEQ", },
-	{ ESP_CMD_DCNCT, "DISC", },
-	{ ESP_CMD_RMSG, "RCVMSG", },
-	{ ESP_CMD_RCMD, "RCVCMD", },
-	{ ESP_CMD_RDATA, "RCVDATA", },
-	{ ESP_CMD_RCSEQ, "RCVCMDSEQ", },
-	/* Initiator State Group */
-	{ ESP_CMD_TI, "TRANSINFO", },
-	{ ESP_CMD_ICCSEQ, "INICMDSEQCOMP", },
-	{ ESP_CMD_MOK, "MSGACCEPTED", },
-	{ ESP_CMD_TPAD, "TPAD", },
-	{ ESP_CMD_SATN, "SATN", },
-	{ ESP_CMD_RATN, "RATN", },
-};
-#define NUM_ESP_COMMANDS  ((sizeof(esp_cmd_strings)) / (sizeof(struct esp_cmdstrings)))
-
-/* Print textual representation of an ESP command */
-static inline void esp_print_cmd(unchar espcmd)
-{
-	unchar dma_bit = espcmd & ESP_CMD_DMA;
-	int i;
-
-	espcmd &= ~dma_bit;
-	for(i=0; i<NUM_ESP_COMMANDS; i++)
-		if(esp_cmd_strings[i].cmdchar == espcmd)
-			break;
-	if(i==NUM_ESP_COMMANDS)
-		printk("ESP_Unknown");
-	else
-		printk("%s%s", esp_cmd_strings[i].text,
-		       ((dma_bit) ? "+DMA" : ""));
-}
-
-/* Print the status register's value */
-static inline void esp_print_statreg(unchar statreg)
-{
-	unchar phase;
-
-	printk("STATUS<");
-	phase = statreg & ESP_STAT_PMASK;
-	printk("%s,", (phase == ESP_DOP ? "DATA-OUT" :
-		       (phase == ESP_DIP ? "DATA-IN" :
-			(phase == ESP_CMDP ? "COMMAND" :
-			 (phase == ESP_STATP ? "STATUS" :
-			  (phase == ESP_MOP ? "MSG-OUT" :
-			   (phase == ESP_MIP ? "MSG_IN" :
-			    "unknown")))))));
-	if(statreg & ESP_STAT_TDONE)
-		printk("TRANS_DONE,");
-	if(statreg & ESP_STAT_TCNT)
-		printk("TCOUNT_ZERO,");
-	if(statreg & ESP_STAT_PERR)
-		printk("P_ERROR,");
-	if(statreg & ESP_STAT_SPAM)
-		printk("SPAM,");
-	if(statreg & ESP_STAT_INTR)
-		printk("IRQ,");
-	printk(">");
-}
-
-/* Print the interrupt register's value */
-static inline void esp_print_ireg(unchar intreg)
-{
-	printk("INTREG< ");
-	if(intreg & ESP_INTR_S)
-		printk("SLCT_NATN ");
-	if(intreg & ESP_INTR_SATN)
-		printk("SLCT_ATN ");
-	if(intreg & ESP_INTR_RSEL)
-		printk("RSLCT ");
-	if(intreg & ESP_INTR_FDONE)
-		printk("FDONE ");
-	if(intreg & ESP_INTR_BSERV)
-		printk("BSERV ");
-	if(intreg & ESP_INTR_DC)
-		printk("DISCNCT ");
-	if(intreg & ESP_INTR_IC)
-		printk("ILL_CMD ");
-	if(intreg & ESP_INTR_SR)
-		printk("SCSI_BUS_RESET ");
-	printk(">");
-}
-
-/* Print the sequence step registers contents */
-static inline void esp_print_seqreg(unchar stepreg)
-{
-	stepreg &= ESP_STEP_VBITS;
-	printk("STEP<%s>",
-	       (stepreg == ESP_STEP_ASEL ? "SLCT_ARB_CMPLT" :
-		(stepreg == ESP_STEP_SID ? "1BYTE_MSG_SENT" :
-		 (stepreg == ESP_STEP_NCMD ? "NOT_IN_CMD_PHASE" :
-		  (stepreg == ESP_STEP_PPC ? "CMD_BYTES_LOST" :
-		   (stepreg == ESP_STEP_FINI4 ? "CMD_SENT_OK" :
-		    "UNKNOWN"))))));
-}
-
-static char *phase_string(int phase)
-{
-	switch(phase) {
-	case not_issued:
-		return "UNISSUED";
-	case in_slct_norm:
-		return "SLCTNORM";
-	case in_slct_stop:
-		return "SLCTSTOP";
-	case in_slct_msg:
-		return "SLCTMSG";
-	case in_slct_tag:
-		return "SLCTTAG";
-	case in_slct_sneg:
-		return "SLCTSNEG";
-	case in_datain:
-		return "DATAIN";
-	case in_dataout:
-		return "DATAOUT";
-	case in_data_done:
-		return "DATADONE";
-	case in_msgin:
-		return "MSGIN";
-	case in_msgincont:
-		return "MSGINCONT";
-	case in_msgindone:
-		return "MSGINDONE";
-	case in_msgout:
-		return "MSGOUT";
-	case in_msgoutdone:
-		return "MSGOUTDONE";
-	case in_cmdbegin:
-		return "CMDBEGIN";
-	case in_cmdend:
-		return "CMDEND";
-	case in_status:
-		return "STATUS";
-	case in_freeing:
-		return "FREEING";
-	case in_the_dark:
-		return "CLUELESS";
-	case in_abortone:
-		return "ABORTONE";
-	case in_abortall:
-		return "ABORTALL";
-	case in_resetdev:
-		return "RESETDEV";
-	case in_resetbus:
-		return "RESETBUS";
-	case in_tgterror:
-		return "TGTERROR";
-	default:
-		return "UNKNOWN";
-	};
-}
-
-#ifdef DEBUG_STATE_MACHINE
-static inline void esp_advance_phase(Scsi_Cmnd *s, int newphase)
-{
-	ESPLOG(("<%s>", phase_string(newphase)));
-	s->SCp.sent_command = s->SCp.phase;
-	s->SCp.phase = newphase;
-}
-#else
-#define esp_advance_phase(__s, __newphase) \
-	(__s)->SCp.sent_command = (__s)->SCp.phase; \
-	(__s)->SCp.phase = (__newphase);
-#endif
-
-#ifdef DEBUG_ESP_CMDS
-static inline void esp_cmd(struct NCR_ESP *esp, struct ESP_regs *eregs,
-			   unchar cmd)
-{
-	esp->espcmdlog[esp->espcmdent] = cmd;
-	esp->espcmdent = (esp->espcmdent + 1) & 31;
-	esp_write(eregs->esp_cmnd, cmd);
-}
-#else
-#define esp_cmd(__esp, __eregs, __cmd)	esp_write((__eregs)->esp_cmnd, (__cmd))
-#endif
-
-/* How we use the various Linux SCSI data structures for operation.
- *
- * struct scsi_cmnd:
- *
- *   We keep track of the syncronous capabilities of a target
- *   in the device member, using sync_min_period and
- *   sync_max_offset.  These are the values we directly write
- *   into the ESP registers while running a command.  If offset
- *   is zero the ESP will use asynchronous transfers.
- *   If the borken flag is set we assume we shouldn't even bother
- *   trying to negotiate for synchronous transfer as this target
- *   is really stupid.  If we notice the target is dropping the
- *   bus, and we have been allowing it to disconnect, we clear
- *   the disconnect flag.
- */
-
-/* Manipulation of the ESP command queues.  Thanks to the aha152x driver
- * and its author, Juergen E. Fischer, for the methods used here.
- * Note that these are per-ESP queues, not global queues like
- * the aha152x driver uses.
- */
-static inline void append_SC(Scsi_Cmnd **SC, Scsi_Cmnd *new_SC)
-{
-	Scsi_Cmnd *end;
-
-	new_SC->host_scribble = (unsigned char *) NULL;
-	if(!*SC)
-		*SC = new_SC;
-	else {
-		for(end=*SC;end->host_scribble;end=(Scsi_Cmnd *)end->host_scribble)
-			;
-		end->host_scribble = (unsigned char *) new_SC;
-	}
-}
-
-static inline void prepend_SC(Scsi_Cmnd **SC, Scsi_Cmnd *new_SC)
-{
-	new_SC->host_scribble = (unsigned char *) *SC;
-	*SC = new_SC;
-}
-
-static inline Scsi_Cmnd *remove_first_SC(Scsi_Cmnd **SC)
-{
-	Scsi_Cmnd *ptr;
-
-	ptr = *SC;
-	if(ptr)
-		*SC = (Scsi_Cmnd *) (*SC)->host_scribble;
-	return ptr;
-}
-
-static inline Scsi_Cmnd *remove_SC(Scsi_Cmnd **SC, int target, int lun)
-{
-	Scsi_Cmnd *ptr, *prev;
-
-	for(ptr = *SC, prev = NULL;
-	    ptr && ((ptr->device->id != target) || (ptr->device->lun != lun));
-	    prev = ptr, ptr = (Scsi_Cmnd *) ptr->host_scribble)
-		;
-	if(ptr) {
-		if(prev)
-			prev->host_scribble=ptr->host_scribble;
-		else
-			*SC=(Scsi_Cmnd *)ptr->host_scribble;
-	}
-	return ptr;
-}
-
-/* Resetting various pieces of the ESP scsi driver chipset */
-
-/* Reset the ESP chip, _not_ the SCSI bus. */
-static void esp_reset_esp(struct NCR_ESP *esp, struct ESP_regs *eregs)
-{
-	int family_code, version, i;
-	volatile int trash;
-
-	/* Now reset the ESP chip */
-	esp_cmd(esp, eregs, ESP_CMD_RC);
-	esp_cmd(esp, eregs, ESP_CMD_NULL | ESP_CMD_DMA);
-	if(esp->erev == fast)
-		esp_write(eregs->esp_cfg2, ESP_CONFIG2_FENAB);
-	esp_cmd(esp, eregs, ESP_CMD_NULL | ESP_CMD_DMA);
-
-	/* This is the only point at which it is reliable to read
-	 * the ID-code for a fast ESP chip variant.
-	 */
-	esp->max_period = ((35 * esp->ccycle) / 1000);
-	if(esp->erev == fast) {
-		char *erev2string[] = {
-			"Emulex FAS236",
-			"Emulex FPESP100A",
-			"fast",
-			"QLogic FAS366",
-			"Emulex FAS216",
-			"Symbios Logic 53CF9x-2",
-			"unknown!"
-		};
-			
-		version = esp_read(eregs->esp_uid);
-		family_code = (version & 0xf8) >> 3;
-		if(family_code == 0x02) {
-		        if ((version & 7) == 2)
-			        esp->erev = fas216;	
-                        else
-			        esp->erev = fas236;
-		} else if(family_code == 0x0a)
-			esp->erev = fas366; /* Version is usually '5'. */
-		else if(family_code == 0x00) {
-			if ((version & 7) == 2)
-				esp->erev = fas100a; /* NCR53C9X */
-			else
-				esp->erev = espunknown;
-		} else if(family_code == 0x14) {
-			if ((version & 7) == 2)
-				esp->erev = fsc;
-		        else
-				esp->erev = espunknown;
-		} else if(family_code == 0x00) {
-			if ((version & 7) == 2)
-				esp->erev = fas100a; /* NCR53C9X */
-			else
-				esp->erev = espunknown;
-		} else
-			esp->erev = espunknown;
-		ESPLOG(("esp%d: FAST chip is %s (family=%d, version=%d)\n",
-			esp->esp_id, erev2string[esp->erev - fas236],
-			family_code, (version & 7)));
-
-		esp->min_period = ((4 * esp->ccycle) / 1000);
-	} else {
-		esp->min_period = ((5 * esp->ccycle) / 1000);
-	}
-
-	/* Reload the configuration registers */
-	esp_write(eregs->esp_cfact, esp->cfact);
-	esp->prev_stp = 0;
-	esp_write(eregs->esp_stp, 0);
-	esp->prev_soff = 0;
-	esp_write(eregs->esp_soff, 0);
-	esp_write(eregs->esp_timeo, esp->neg_defp);
-	esp->max_period = (esp->max_period + 3)>>2;
-	esp->min_period = (esp->min_period + 3)>>2;
-
-	esp_write(eregs->esp_cfg1, esp->config1);
-	switch(esp->erev) {
-	case esp100:
-		/* nothing to do */
-		break;
-	case esp100a:
-		esp_write(eregs->esp_cfg2, esp->config2);
-		break;
-	case esp236:
-		/* Slow 236 */
-		esp_write(eregs->esp_cfg2, esp->config2);
-		esp->prev_cfg3 = esp->config3[0];
-		esp_write(eregs->esp_cfg3, esp->prev_cfg3);
-		break;
-	case fas366:
-		panic("esp: FAS366 support not present, please notify "
-		      "jongk@cs.utwente.nl");
-		break;
-	case fas216:
-	case fas236:
-	case fsc:
-		/* Fast ESP variants */
-		esp_write(eregs->esp_cfg2, esp->config2);
-		for(i=0; i<8; i++)
-			esp->config3[i] |= ESP_CONFIG3_FCLK;
-		esp->prev_cfg3 = esp->config3[0];
-		esp_write(eregs->esp_cfg3, esp->prev_cfg3);
-		if(esp->diff)
-			esp->radelay = 0;
-		else
-			esp->radelay = 16;
-		/* Different timeout constant for these chips */
-		esp->neg_defp =
-			FSC_NEG_DEFP(esp->cfreq,
-				     (esp->cfact == ESP_CCF_F0 ?
-				      ESP_CCF_F7 + 1 : esp->cfact));
-		esp_write(eregs->esp_timeo, esp->neg_defp);
-		/* Enable Active Negotiation if possible */
-		if((esp->erev == fsc) && !esp->diff)
-			esp_write(eregs->esp_cfg4, ESP_CONFIG4_EAN);
-		break;
-	case fas100a:
-		/* Fast 100a */
-		esp_write(eregs->esp_cfg2, esp->config2);
-		for(i=0; i<8; i++)
-			esp->config3[i] |= ESP_CONFIG3_FCLOCK;
-		esp->prev_cfg3 = esp->config3[0];
-		esp_write(eregs->esp_cfg3, esp->prev_cfg3);
-		esp->radelay = 32;
-		break;
-	default:
-		panic("esp: what could it be... I wonder...");
-		break;
-	};
-
-	/* Eat any bitrot in the chip */
-	trash = esp_read(eregs->esp_intrpt);
-	udelay(100);
-}
-
-/* This places the ESP into a known state at boot time. */
-void esp_bootup_reset(struct NCR_ESP *esp, struct ESP_regs *eregs)
-{
-	volatile unchar trash;
-
-	/* Reset the DMA */
-	if(esp->dma_reset)
-		esp->dma_reset(esp);
-
-	/* Reset the ESP */
-	esp_reset_esp(esp, eregs);
-
-	/* Reset the SCSI bus, but tell ESP not to generate an irq */
-	esp_write(eregs->esp_cfg1, (esp_read(eregs->esp_cfg1) | ESP_CONFIG1_SRRDISAB));
-	esp_cmd(esp, eregs, ESP_CMD_RS);
-	udelay(400);
-	esp_write(eregs->esp_cfg1, esp->config1);
-
-	/* Eat any bitrot in the chip and we are done... */
-	trash = esp_read(eregs->esp_intrpt);
-}
-EXPORT_SYMBOL(esp_bootup_reset);
-
-/* Allocate structure and insert basic data such as SCSI chip frequency
- * data and a pointer to the device
- */
-struct NCR_ESP* esp_allocate(struct scsi_host_template *tpnt, void *esp_dev,
-			     int hotplug)
-{
-	struct NCR_ESP *esp, *elink;
-	struct Scsi_Host *esp_host;
-
-	if (hotplug)
-		esp_host = scsi_host_alloc(tpnt, sizeof(struct NCR_ESP));
-	else
-		esp_host = scsi_register(tpnt, sizeof(struct NCR_ESP));
-	if(!esp_host)
-		panic("Cannot register ESP SCSI host");
-	esp = (struct NCR_ESP *) esp_host->hostdata;
-	if(!esp)
-		panic("No esp in hostdata");
-	esp->ehost = esp_host;
-	esp->edev = esp_dev;
-	esp->esp_id = nesps++;
-
-	/* Set bitshift value (only used on Amiga with multiple ESPs) */
-	esp->shift = 2;
-
-	/* Put into the chain of esp chips detected */
-	if(espchain) {
-		elink = espchain;
-		while(elink->next) elink = elink->next;
-		elink->next = esp;
-	} else {
-		espchain = esp;
-	}
-	esp->next = NULL;
-
-	return esp;
-}
-
-void esp_deallocate(struct NCR_ESP *esp)
-{
-	struct NCR_ESP *elink;
-
-	if(espchain == esp) {
-		espchain = NULL;
-	} else {
-		for(elink = espchain; elink && (elink->next != esp); elink = elink->next);
-		if(elink) 
-			elink->next = esp->next;
-	}
-	nesps--;
-}
-
-/* Complete initialization of ESP structure and device
- * Caller must have initialized appropriate parts of the ESP structure
- * between the call to esp_allocate and this function.
- */
-void esp_initialize(struct NCR_ESP *esp)
-{
-	struct ESP_regs *eregs = esp->eregs;
-	unsigned int fmhz;
-	unchar ccf;
-	int i;
-	
-	/* Check out the clock properties of the chip. */
-
-	/* This is getting messy but it has to be done
-	 * correctly or else you get weird behavior all
-	 * over the place.  We are trying to basically
-	 * figure out three pieces of information.
-	 *
-	 * a) Clock Conversion Factor
-	 *
-	 *    This is a representation of the input
-	 *    crystal clock frequency going into the
-	 *    ESP on this machine.  Any operation whose
-	 *    timing is longer than 400ns depends on this
-	 *    value being correct.  For example, you'll
-	 *    get blips for arbitration/selection during
-	 *    high load or with multiple targets if this
-	 *    is not set correctly.
-	 *
-	 * b) Selection Time-Out
-	 *
-	 *    The ESP isn't very bright and will arbitrate
-	 *    for the bus and try to select a target
-	 *    forever if you let it.  This value tells
-	 *    the ESP when it has taken too long to
-	 *    negotiate and that it should interrupt
-	 *    the CPU so we can see what happened.
-	 *    The value is computed as follows (from
-	 *    NCR/Symbios chip docs).
-	 *
-	 *          (Time Out Period) *  (Input Clock)
-	 *    STO = ----------------------------------
-	 *          (8192) * (Clock Conversion Factor)
-	 *
-	 *    You usually want the time out period to be
-	 *    around 250ms, I think we'll set it a little
-	 *    bit higher to account for fully loaded SCSI
-	 *    bus's and slow devices that don't respond so
-	 *    quickly to selection attempts. (yeah, I know
-	 *    this is out of spec. but there is a lot of
-	 *    buggy pieces of firmware out there so bite me)
-	 *
-	 * c) Imperical constants for synchronous offset
-	 *    and transfer period register values
-	 *
-	 *    This entails the smallest and largest sync
-	 *    period we could ever handle on this ESP.
-	 */
-	
-	fmhz = esp->cfreq;
-
-	if(fmhz <= (5000000))
-		ccf = 0;
-	else
-		ccf = (((5000000 - 1) + (fmhz))/(5000000));
-	if(!ccf || ccf > 8) {
-		/* If we can't find anything reasonable,
-		 * just assume 20MHZ.  This is the clock
-		 * frequency of the older sun4c's where I've
-		 * been unable to find the clock-frequency
-		 * PROM property.  All other machines provide
-		 * useful values it seems.
-		 */
-		ccf = ESP_CCF_F4;
-		fmhz = (20000000);
-	}
-	if(ccf==(ESP_CCF_F7+1))
-		esp->cfact = ESP_CCF_F0;
-	else if(ccf == ESP_CCF_NEVER)
-		esp->cfact = ESP_CCF_F2;
-	else
-		esp->cfact = ccf;
-	esp->cfreq = fmhz;
-	esp->ccycle = ESP_MHZ_TO_CYCLE(fmhz);
-	esp->ctick = ESP_TICK(ccf, esp->ccycle);
-	esp->neg_defp = ESP_NEG_DEFP(fmhz, ccf);
-	esp->sync_defp = SYNC_DEFP_SLOW;
-
-	printk("SCSI ID %d Clk %dMHz CCF=%d TOut %d ",
-	       esp->scsi_id, (esp->cfreq / 1000000),
-	       ccf, (int) esp->neg_defp);
-
-	/* Fill in ehost data */
-	esp->ehost->base = (unsigned long)eregs;
-	esp->ehost->this_id = esp->scsi_id;
-	esp->ehost->irq = esp->irq;
-
-	/* SCSI id mask */
-	esp->scsi_id_mask = (1 << esp->scsi_id);
-
-	/* Probe the revision of this esp */
-	esp->config1 = (ESP_CONFIG1_PENABLE | (esp->scsi_id & 7));
-	esp->config2 = (ESP_CONFIG2_SCSI2ENAB | ESP_CONFIG2_REGPARITY);
-	esp_write(eregs->esp_cfg2, esp->config2);
-	if((esp_read(eregs->esp_cfg2) & ~(ESP_CONFIG2_MAGIC)) !=
-	   (ESP_CONFIG2_SCSI2ENAB | ESP_CONFIG2_REGPARITY)) {
-		printk("NCR53C90(esp100)\n");
-		esp->erev = esp100;
-	} else {
-		esp->config2 = 0;
-		esp_write(eregs->esp_cfg2, 0);
-		esp_write(eregs->esp_cfg3, 5);
-		if(esp_read(eregs->esp_cfg3) != 5) {
-			printk("NCR53C90A(esp100a)\n");
-			esp->erev = esp100a;
-		} else {
-			int target;
-
-			for(target=0; target<8; target++)
-				esp->config3[target] = 0;
-			esp->prev_cfg3 = 0;
-			esp_write(eregs->esp_cfg3, 0);
-			if(ccf > ESP_CCF_F5) {
-				printk("NCR53C9XF(espfast)\n");
-				esp->erev = fast;
-				esp->sync_defp = SYNC_DEFP_FAST;
-			} else {
-				printk("NCR53C9x(esp236)\n");
-				esp->erev = esp236;
-			}
-		}
-	}				
-
-	/* Initialize the command queues */
-	esp->current_SC = NULL;
-	esp->disconnected_SC = NULL;
-	esp->issue_SC = NULL;
-
-	/* Clear the state machines. */
-	esp->targets_present = 0;
-	esp->resetting_bus = 0;
-	esp->snip = 0;
-
-	init_waitqueue_head(&esp->reset_queue);
-
-	esp->fas_premature_intr_workaround = 0;
-	for(i = 0; i < 32; i++)
-		esp->espcmdlog[i] = 0;
-	esp->espcmdent = 0;
-	for(i = 0; i < 16; i++) {
-		esp->cur_msgout[i] = 0;
-		esp->cur_msgin[i] = 0;
-	}
-	esp->prevmsgout = esp->prevmsgin = 0;
-	esp->msgout_len = esp->msgin_len = 0;
-
-	/* Clear the one behind caches to hold unmatchable values. */
-	esp->prev_soff = esp->prev_stp = esp->prev_cfg3 = 0xff;
-
-	/* Reset the thing before we try anything... */
-	esp_bootup_reset(esp, eregs);
-
-	esps_in_use++;
-}
-
-/* The info function will return whatever useful
- * information the developer sees fit.  If not provided, then
- * the name field will be used instead.
- */
-const char *esp_info(struct Scsi_Host *host)
-{
-	struct NCR_ESP *esp;
-
-	esp = (struct NCR_ESP *) host->hostdata;
-	switch(esp->erev) {
-	case esp100:
-		return "ESP100 (NCR53C90)";
-	case esp100a:
-		return "ESP100A (NCR53C90A)";
-	case esp236:
-		return "ESP236 (NCR53C9x)";
-	case fas216:
-		return "Emulex FAS216";
-	case fas236:
-		return "Emulex FAS236";
-	case fas366:
-		return "QLogic FAS366";
-	case fas100a:
-		return "FPESP100A";
-	case fsc:
-		return "Symbios Logic 53CF9x-2";
-	default:
-		panic("Bogon ESP revision");
-	};
-}
-EXPORT_SYMBOL(esp_info);
-
-/* From Wolfgang Stanglmeier's NCR scsi driver. */
-struct info_str
-{
-	char *buffer;
-	int length;
-	int offset;
-	int pos;
-};
-
-static void copy_mem_info(struct info_str *info, char *data, int len)
-{
-	if (info->pos + len > info->length)
-		len = info->length - info->pos;
-
-	if (info->pos + len < info->offset) {
-		info->pos += len;
-		return;
-	}
-	if (info->pos < info->offset) {
-		data += (info->offset - info->pos);
-		len  -= (info->offset - info->pos);
-	}
-
-	if (len > 0) {
-		memcpy(info->buffer + info->pos, data, len);
-		info->pos += len;
-	}
-}
-
-static int copy_info(struct info_str *info, char *fmt, ...)
-{
-	va_list args;
-	char buf[81];
-	int len;
-
-	va_start(args, fmt);
-	len = vsprintf(buf, fmt, args);
-	va_end(args);
-
-	copy_mem_info(info, buf, len);
-	return len;
-}
-
-static int esp_host_info(struct NCR_ESP *esp, char *ptr, off_t offset, int len)
-{
-	struct scsi_device *sdev;
-	struct info_str info;
-	int i;
-
-	info.buffer	= ptr;
-	info.length	= len;
-	info.offset	= offset;
-	info.pos	= 0;
-
-	copy_info(&info, "ESP Host Adapter:\n");
-	copy_info(&info, "\tESP Model\t\t");
-	switch(esp->erev) {
-	case esp100:
-		copy_info(&info, "ESP100 (NCR53C90)\n");
-		break;
-	case esp100a:
-		copy_info(&info, "ESP100A (NCR53C90A)\n");
-		break;
-	case esp236:
-		copy_info(&info, "ESP236 (NCR53C9x)\n");
-		break;
-	case fas216:
-		copy_info(&info, "Emulex FAS216\n");
-		break;
-	case fas236:
-		copy_info(&info, "Emulex FAS236\n");
-		break;
-	case fas100a:
-		copy_info(&info, "FPESP100A\n");
-		break;
-	case fast:
-		copy_info(&info, "Generic FAST\n");
-		break;
-	case fas366:
-		copy_info(&info, "QLogic FAS366\n");
-		break;
-	case fsc:
-		copy_info(&info, "Symbios Logic 53C9x-2\n");
-		break;
-	case espunknown:
-	default:
-		copy_info(&info, "Unknown!\n");
-		break;
-	};
-	copy_info(&info, "\tLive Targets\t\t[ ");
-	for(i = 0; i < 15; i++) {
-		if(esp->targets_present & (1 << i))
-			copy_info(&info, "%d ", i);
-	}
-	copy_info(&info, "]\n\n");
-	
-	/* Now describe the state of each existing target. */
-	copy_info(&info, "Target #\tconfig3\t\tSync Capabilities\tDisconnect\n");
-
-	shost_for_each_device(sdev, esp->ehost) {
-		struct esp_device *esp_dev = sdev->hostdata;
-		uint id = sdev->id;
-
-		if (!(esp->targets_present & (1 << id)))
-			continue;
-
-		copy_info(&info, "%d\t\t", id);
-		copy_info(&info, "%08lx\t", esp->config3[id]);
-		copy_info(&info, "[%02lx,%02lx]\t\t\t",
-			esp_dev->sync_max_offset,
-			esp_dev->sync_min_period);
-		copy_info(&info, "%s\n", esp_dev->disconnect ? "yes" : "no");
-	}
-
-	return info.pos > info.offset? info.pos - info.offset : 0;
-}
-
-/* ESP proc filesystem code. */
-int esp_proc_info(struct Scsi_Host *shost, char *buffer, char **start, off_t offset, int length,
-		  int inout)
-{
-	struct NCR_ESP *esp = (struct NCR_ESP *)shost->hostdata;
-
-	if(inout)
-		return -EINVAL; /* not yet */
-	if(start)
-		*start = buffer;
-	return esp_host_info(esp, buffer, offset, length);
-}
-EXPORT_SYMBOL(esp_proc_info);
-
-static void esp_get_dmabufs(struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
-	if(sp->use_sg == 0) {
-		sp->SCp.this_residual = sp->request_bufflen;
-		sp->SCp.buffer = (struct scatterlist *) sp->request_buffer;
-		sp->SCp.buffers_residual = 0;
-		if (esp->dma_mmu_get_scsi_one)
-			esp->dma_mmu_get_scsi_one(esp, sp);
-		else
-			sp->SCp.ptr =
-				(char *) virt_to_phys(sp->request_buffer);
-	} else {
-		sp->SCp.buffer = (struct scatterlist *) sp->request_buffer;
-		sp->SCp.buffers_residual = sp->use_sg - 1;
-		sp->SCp.this_residual = sp->SCp.buffer->length;
-		if (esp->dma_mmu_get_scsi_sgl)
-			esp->dma_mmu_get_scsi_sgl(esp, sp);
-		else
-			sp->SCp.ptr =
-				(char *) virt_to_phys(sg_virt(sp->SCp.buffer));
-	}
-}
-
-static void esp_release_dmabufs(struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
-	if(sp->use_sg == 0) {
-		if (esp->dma_mmu_release_scsi_one)
-			esp->dma_mmu_release_scsi_one(esp, sp);
-	} else {
-		if (esp->dma_mmu_release_scsi_sgl)
-			esp->dma_mmu_release_scsi_sgl(esp, sp);
-	}
-}
-
-static void esp_restore_pointers(struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
-	struct esp_pointers *ep = &esp->data_pointers[scmd_id(sp)];
-
-	sp->SCp.ptr = ep->saved_ptr;
-	sp->SCp.buffer = ep->saved_buffer;
-	sp->SCp.this_residual = ep->saved_this_residual;
-	sp->SCp.buffers_residual = ep->saved_buffers_residual;
-}
-
-static void esp_save_pointers(struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
-	struct esp_pointers *ep = &esp->data_pointers[scmd_id(sp)];
-
-	ep->saved_ptr = sp->SCp.ptr;
-	ep->saved_buffer = sp->SCp.buffer;
-	ep->saved_this_residual = sp->SCp.this_residual;
-	ep->saved_buffers_residual = sp->SCp.buffers_residual;
-}
-
-/* Some rules:
- *
- *   1) Never ever panic while something is live on the bus.
- *      If there is to be any chance of syncing the disks this
- *      rule is to be obeyed.
- *
- *   2) Any target that causes a foul condition will no longer
- *      have synchronous transfers done to it, no questions
- *      asked.
- *
- *   3) Keep register accesses to a minimum.  Think about some
- *      day when we have Xbus machines this is running on and
- *      the ESP chip is on the other end of the machine on a
- *      different board from the cpu where this is running.
- */
-
-/* Fire off a command.  We assume the bus is free and that the only
- * case where we could see an interrupt is where we have disconnected
- * commands active and they are trying to reselect us.
- */
-static inline void esp_check_cmd(struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
-	switch(sp->cmd_len) {
-	case 6:
-	case 10:
-	case 12:
-		esp->esp_slowcmd = 0;
-		break;
-
-	default:
-		esp->esp_slowcmd = 1;
-		esp->esp_scmdleft = sp->cmd_len;
-		esp->esp_scmdp = &sp->cmnd[0];
-		break;
-	};
-}
-
-static inline void build_sync_nego_msg(struct NCR_ESP *esp, int period, int offset)
-{
-	esp->cur_msgout[0] = EXTENDED_MESSAGE;
-	esp->cur_msgout[1] = 3;
-	esp->cur_msgout[2] = EXTENDED_SDTR;
-	esp->cur_msgout[3] = period;
-	esp->cur_msgout[4] = offset;
-	esp->msgout_len = 5;
-}
-
-static void esp_exec_cmd(struct NCR_ESP *esp)
-{
-	struct ESP_regs *eregs = esp->eregs;
-	struct esp_device *esp_dev;
-	Scsi_Cmnd *SCptr;
-	struct scsi_device *SDptr;
-	volatile unchar *cmdp = esp->esp_command;
-	unsigned char the_esp_command;
-	int lun, target;
-	int i;
-
-	/* Hold off if we have disconnected commands and
-	 * an IRQ is showing...
-	 */
-	if(esp->disconnected_SC && esp->dma_irq_p(esp))
-		return;
-
-	/* Grab first member of the issue queue. */
-	SCptr = esp->current_SC = remove_first_SC(&esp->issue_SC);
-
-	/* Safe to panic here because current_SC is null. */
-	if(!SCptr)
-		panic("esp: esp_exec_cmd and issue queue is NULL");
-
-	SDptr = SCptr->device;
-	esp_dev = SDptr->hostdata;
-	lun = SCptr->device->lun;
-	target = SCptr->device->id;
-
-	esp->snip = 0;
-	esp->msgout_len = 0;
-
-	/* Send it out whole, or piece by piece?   The ESP
-	 * only knows how to automatically send out 6, 10,
-	 * and 12 byte commands.  I used to think that the
-	 * Linux SCSI code would never throw anything other
-	 * than that to us, but then again there is the
-	 * SCSI generic driver which can send us anything.
-	 */
-	esp_check_cmd(esp, SCptr);
-
-	/* If arbitration/selection is successful, the ESP will leave
-	 * ATN asserted, causing the target to go into message out
-	 * phase.  The ESP will feed the target the identify and then
-	 * the target can only legally go to one of command,
-	 * datain/out, status, or message in phase, or stay in message
-	 * out phase (should we be trying to send a sync negotiation
-	 * message after the identify).  It is not allowed to drop
-	 * BSY, but some buggy targets do and we check for this
-	 * condition in the selection complete code.  Most of the time
-	 * we'll make the command bytes available to the ESP and it
-	 * will not interrupt us until it finishes command phase, we
-	 * cannot do this for command sizes the ESP does not
-	 * understand and in this case we'll get interrupted right
-	 * when the target goes into command phase.
-	 *
-	 * It is absolutely _illegal_ in the presence of SCSI-2 devices
-	 * to use the ESP select w/o ATN command.  When SCSI-2 devices are
-	 * present on the bus we _must_ always go straight to message out
-	 * phase with an identify message for the target.  Being that
-	 * selection attempts in SCSI-1 w/o ATN was an option, doing SCSI-2
-	 * selections should not confuse SCSI-1 we hope.
-	 */
-
-	if(esp_dev->sync) {
-		/* this targets sync is known */
-#ifdef CONFIG_SCSI_MAC_ESP
-do_sync_known:
-#endif
-		if(esp_dev->disconnect)
-			*cmdp++ = IDENTIFY(1, lun);
-		else
-			*cmdp++ = IDENTIFY(0, lun);
-
-		if(esp->esp_slowcmd) {
-			the_esp_command = (ESP_CMD_SELAS | ESP_CMD_DMA);
-			esp_advance_phase(SCptr, in_slct_stop);
-		} else {
-			the_esp_command = (ESP_CMD_SELA | ESP_CMD_DMA);
-			esp_advance_phase(SCptr, in_slct_norm);
-		}
-	} else if(!(esp->targets_present & (1<<target)) || !(esp_dev->disconnect)) {
-		/* After the bootup SCSI code sends both the
-		 * TEST_UNIT_READY and INQUIRY commands we want
-		 * to at least attempt allowing the device to
-		 * disconnect.
-		 */
-		ESPMISC(("esp: Selecting device for first time. target=%d "
-			 "lun=%d\n", target, SCptr->device->lun));
-		if(!SDptr->borken && !esp_dev->disconnect)
-			esp_dev->disconnect = 1;
-
-		*cmdp++ = IDENTIFY(0, lun);
-		esp->prevmsgout = NOP;
-		esp_advance_phase(SCptr, in_slct_norm);
-		the_esp_command = (ESP_CMD_SELA | ESP_CMD_DMA);
-
-		/* Take no chances... */
-		esp_dev->sync_max_offset = 0;
-		esp_dev->sync_min_period = 0;
-	} else {
-		int toshiba_cdrom_hwbug_wkaround = 0;
-
-#ifdef CONFIG_SCSI_MAC_ESP
-		/* Never allow synchronous transfers (disconnect OK) on
-		 * Macintosh. Well, maybe later when we figured out how to 
-		 * do DMA on the machines that support it ...
-		 */
-		esp_dev->disconnect = 1;
-		esp_dev->sync_max_offset = 0;
-		esp_dev->sync_min_period = 0;
-		esp_dev->sync = 1;
-		esp->snip = 0;
-		goto do_sync_known;
-#endif
-		/* We've talked to this guy before,
-		 * but never negotiated.  Let's try
-		 * sync negotiation.
-		 */
-		if(!SDptr->borken) {
-			if((SDptr->type == TYPE_ROM) &&
-			   (!strncmp(SDptr->vendor, "TOSHIBA", 7))) {
-				/* Nice try sucker... */
-				ESPMISC(("esp%d: Disabling sync for buggy "
-					 "Toshiba CDROM.\n", esp->esp_id));
-				toshiba_cdrom_hwbug_wkaround = 1;
-				build_sync_nego_msg(esp, 0, 0);
-			} else {
-				build_sync_nego_msg(esp, esp->sync_defp, 15);
-			}
-		} else {
-			build_sync_nego_msg(esp, 0, 0);
-		}
-		esp_dev->sync = 1;
-		esp->snip = 1;
-
-		/* A fix for broken SCSI1 targets, when they disconnect
-		 * they lock up the bus and confuse ESP.  So disallow
-		 * disconnects for SCSI1 targets for now until we
-		 * find a better fix.
-		 *
-		 * Addendum: This is funny, I figured out what was going
-		 *           on.  The blotzed SCSI1 target would disconnect,
-		 *           one of the other SCSI2 targets or both would be
-		 *           disconnected as well.  The SCSI1 target would
-		 *           stay disconnected long enough that we start
-		 *           up a command on one of the SCSI2 targets.  As
-		 *           the ESP is arbitrating for the bus the SCSI1
-		 *           target begins to arbitrate as well to reselect
-		 *           the ESP.  The SCSI1 target refuses to drop it's
-		 *           ID bit on the data bus even though the ESP is
-		 *           at ID 7 and is the obvious winner for any
-		 *           arbitration.  The ESP is a poor sport and refuses
-		 *           to lose arbitration, it will continue indefinitely
-		 *           trying to arbitrate for the bus and can only be
-		 *           stopped via a chip reset or SCSI bus reset.
-		 *           Therefore _no_ disconnects for SCSI1 targets
-		 *           thank you very much. ;-)
-		 */
-		if(((SDptr->scsi_level < 3) && (SDptr->type != TYPE_TAPE)) ||
-		   toshiba_cdrom_hwbug_wkaround || SDptr->borken) {
-			ESPMISC((KERN_INFO "esp%d: Disabling DISCONNECT for target %d "
-				 "lun %d\n", esp->esp_id, SCptr->device->id, SCptr->device->lun));
-			esp_dev->disconnect = 0;
-			*cmdp++ = IDENTIFY(0, lun);
-		} else {
-			*cmdp++ = IDENTIFY(1, lun);
-		}
-
-		/* ESP fifo is only so big...
-		 * Make this look like a slow command.
-		 */
-		esp->esp_slowcmd = 1;
-		esp->esp_scmdleft = SCptr->cmd_len;
-		esp->esp_scmdp = &SCptr->cmnd[0];
-
-		the_esp_command = (ESP_CMD_SELAS | ESP_CMD_DMA);
-		esp_advance_phase(SCptr, in_slct_msg);
-	}
-
-	if(!esp->esp_slowcmd)
-		for(i = 0; i < SCptr->cmd_len; i++)
-			*cmdp++ = SCptr->cmnd[i];
-
-	esp_write(eregs->esp_busid, (target & 7));
-	if (esp->prev_soff != esp_dev->sync_max_offset ||
-	    esp->prev_stp  != esp_dev->sync_min_period ||
-	    (esp->erev > esp100a &&
-	     esp->prev_cfg3 != esp->config3[target])) {
-		esp->prev_soff = esp_dev->sync_max_offset;
-		esp_write(eregs->esp_soff, esp->prev_soff);
-		esp->prev_stp = esp_dev->sync_min_period;
-		esp_write(eregs->esp_stp, esp->prev_stp); 
-		if(esp->erev > esp100a) {
-			esp->prev_cfg3 = esp->config3[target];
-			esp_write(eregs->esp_cfg3, esp->prev_cfg3);
-		}
-	}
-	i = (cmdp - esp->esp_command);
-
-	/* Set up the DMA and ESP counters */
-	if(esp->do_pio_cmds){
-		int j = 0;
-
-		/* 
-		 * XXX MSch:
-		 *
-		 * It seems this is required, at least to clean up
-		 * after failed commands when using PIO mode ...
-		 */
-		esp_cmd(esp, eregs, ESP_CMD_FLUSH);
-
-		for(;j<i;j++)
-			esp_write(eregs->esp_fdata, esp->esp_command[j]);
-		the_esp_command &= ~ESP_CMD_DMA;
-
-		/* Tell ESP to "go". */
-		esp_cmd(esp, eregs, the_esp_command);
-	} else {
-		/* Set up the ESP counters */
-		esp_write(eregs->esp_tclow, i);
-		esp_write(eregs->esp_tcmed, 0);
-		esp->dma_init_write(esp, esp->esp_command_dvma, i);
-
-		/* Tell ESP to "go". */
-		esp_cmd(esp, eregs, the_esp_command);
-	}
-}
-
-/* Queue a SCSI command delivered from the mid-level Linux SCSI code. */
-int esp_queue(Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *))
-{
-	struct NCR_ESP *esp;
-
-	/* Set up func ptr and initial driver cmd-phase. */
-	SCpnt->scsi_done = done;
-	SCpnt->SCp.phase = not_issued;
-
-	esp = (struct NCR_ESP *) SCpnt->device->host->hostdata;
-
-	if(esp->dma_led_on)
-		esp->dma_led_on(esp);
-
-	/* We use the scratch area. */
-	ESPQUEUE(("esp_queue: target=%d lun=%d ", SCpnt->device->id, SCpnt->lun));
-	ESPDISC(("N<%02x,%02x>", SCpnt->device->id, SCpnt->lun));
-
-	esp_get_dmabufs(esp, SCpnt);
-	esp_save_pointers(esp, SCpnt); /* FIXME for tag queueing */
-
-	SCpnt->SCp.Status           = CHECK_CONDITION;
-	SCpnt->SCp.Message          = 0xff;
-	SCpnt->SCp.sent_command     = 0;
-
-	/* Place into our queue. */
-	if(SCpnt->cmnd[0] == REQUEST_SENSE) {
-		ESPQUEUE(("RQSENSE\n"));
-		prepend_SC(&esp->issue_SC, SCpnt);
-	} else {
-		ESPQUEUE(("\n"));
-		append_SC(&esp->issue_SC, SCpnt);
-	}
-
-	/* Run it now if we can. */
-	if(!esp->current_SC && !esp->resetting_bus)
-		esp_exec_cmd(esp);
-
-	return 0;
-}
-
-/* Dump driver state. */
-static void esp_dump_cmd(Scsi_Cmnd *SCptr)
-{
-	ESPLOG(("[tgt<%02x> lun<%02x> "
-		"pphase<%s> cphase<%s>]",
-		SCptr->device->id, SCptr->device->lun,
-		phase_string(SCptr->SCp.sent_command),
-		phase_string(SCptr->SCp.phase)));
-}
-
-static void esp_dump_state(struct NCR_ESP *esp, 
-			   struct ESP_regs *eregs)
-{
-	Scsi_Cmnd *SCptr = esp->current_SC;
-#ifdef DEBUG_ESP_CMDS
-	int i;
-#endif
-
-	ESPLOG(("esp%d: dumping state\n", esp->esp_id));
-	
-	/* Print DMA status */
-	esp->dma_dump_state(esp);
-
-	ESPLOG(("esp%d: SW [sreg<%02x> sstep<%02x> ireg<%02x>]\n",
-		esp->esp_id, esp->sreg, esp->seqreg, esp->ireg));
-	ESPLOG(("esp%d: HW reread [sreg<%02x> sstep<%02x> ireg<%02x>]\n",
-		esp->esp_id, esp_read(eregs->esp_status), esp_read(eregs->esp_sstep),
-		esp_read(eregs->esp_intrpt)));
-#ifdef DEBUG_ESP_CMDS
-	printk("esp%d: last ESP cmds [", esp->esp_id);
-	i = (esp->espcmdent - 1) & 31;
-	printk("<");
-	esp_print_cmd(esp->espcmdlog[i]);
-	printk(">");
-	i = (i - 1) & 31;
-	printk("<");
-	esp_print_cmd(esp->espcmdlog[i]);
-	printk(">");
-	i = (i - 1) & 31;
-	printk("<");
-	esp_print_cmd(esp->espcmdlog[i]);
-	printk(">");
-	i = (i - 1) & 31;
-	printk("<");
-	esp_print_cmd(esp->espcmdlog[i]);
-	printk(">");
-	printk("]\n");
-#endif /* (DEBUG_ESP_CMDS) */
-
-	if(SCptr) {
-		ESPLOG(("esp%d: current command ", esp->esp_id));
-		esp_dump_cmd(SCptr);
-	}
-	ESPLOG(("\n"));
-	SCptr = esp->disconnected_SC;
-	ESPLOG(("esp%d: disconnected ", esp->esp_id));
-	while(SCptr) {
-		esp_dump_cmd(SCptr);
-		SCptr = (Scsi_Cmnd *) SCptr->host_scribble;
-	}
-	ESPLOG(("\n"));
-}
-
-/* Abort a command.  The host_lock is acquired by caller. */
-int esp_abort(Scsi_Cmnd *SCptr)
-{
-	struct NCR_ESP *esp = (struct NCR_ESP *) SCptr->device->host->hostdata;
-	struct ESP_regs *eregs = esp->eregs;
-	int don;
-
-	ESPLOG(("esp%d: Aborting command\n", esp->esp_id));
-	esp_dump_state(esp, eregs);
-
-	/* Wheee, if this is the current command on the bus, the
-	 * best we can do is assert ATN and wait for msgout phase.
-	 * This should even fix a hung SCSI bus when we lose state
-	 * in the driver and timeout because the eventual phase change
-	 * will cause the ESP to (eventually) give an interrupt.
-	 */
-	if(esp->current_SC == SCptr) {
-		esp->cur_msgout[0] = ABORT;
-		esp->msgout_len = 1;
-		esp->msgout_ctr = 0;
-		esp_cmd(esp, eregs, ESP_CMD_SATN);
-		return SUCCESS;
-	}
-
-	/* If it is still in the issue queue then we can safely
-	 * call the completion routine and report abort success.
-	 */
-	don = esp->dma_ports_p(esp);
-	if(don) {
-		esp->dma_ints_off(esp);
-		synchronize_irq(esp->irq);
-	}
-	if(esp->issue_SC) {
-		Scsi_Cmnd **prev, *this;
-		for(prev = (&esp->issue_SC), this = esp->issue_SC;
-		    this;
-		    prev = (Scsi_Cmnd **) &(this->host_scribble),
-		    this = (Scsi_Cmnd *) this->host_scribble) {
-			if(this == SCptr) {
-				*prev = (Scsi_Cmnd *) this->host_scribble;
-				this->host_scribble = NULL;
-				esp_release_dmabufs(esp, this);
-				this->result = DID_ABORT << 16;
-				this->scsi_done(this);
-				if(don)
-					esp->dma_ints_on(esp);
-				return SUCCESS;
-			}
-		}
-	}
-
-	/* Yuck, the command to abort is disconnected, it is not
-	 * worth trying to abort it now if something else is live
-	 * on the bus at this time.  So, we let the SCSI code wait
-	 * a little bit and try again later.
-	 */
-	if(esp->current_SC) {
-		if(don)
-			esp->dma_ints_on(esp);
-		return FAILED;
-	}
-
-	/* It's disconnected, we have to reconnect to re-establish
-	 * the nexus and tell the device to abort.  However, we really
-	 * cannot 'reconnect' per se.  Don't try to be fancy, just
-	 * indicate failure, which causes our caller to reset the whole
-	 * bus.
-	 */
-
-	if(don)
-		esp->dma_ints_on(esp);
-	return FAILED;
-}
-
-/* We've sent ESP_CMD_RS to the ESP, the interrupt had just
- * arrived indicating the end of the SCSI bus reset.  Our job
- * is to clean out the command queues and begin re-execution
- * of SCSI commands once more.
- */
-static int esp_finish_reset(struct NCR_ESP *esp,
-			    struct ESP_regs *eregs)
-{
-	Scsi_Cmnd *sp = esp->current_SC;
-
-	/* Clean up currently executing command, if any. */
-	if (sp != NULL) {
-		esp_release_dmabufs(esp, sp);
-		sp->result = (DID_RESET << 16);
-		sp->scsi_done(sp);
-		esp->current_SC = NULL;
-	}
-
-	/* Clean up disconnected queue, they have been invalidated
-	 * by the bus reset.
-	 */
-	if (esp->disconnected_SC) {
-		while((sp = remove_first_SC(&esp->disconnected_SC)) != NULL) {
-			esp_release_dmabufs(esp, sp);
-			sp->result = (DID_RESET << 16);
-			sp->scsi_done(sp);
-		}
-	}
-
-	/* SCSI bus reset is complete. */
-	esp->resetting_bus = 0;
-	wake_up(&esp->reset_queue);
-
-	/* Ok, now it is safe to get commands going once more. */
-	if(esp->issue_SC)
-		esp_exec_cmd(esp);
-
-	return do_intr_end;
-}
-
-static int esp_do_resetbus(struct NCR_ESP *esp,
-			   struct ESP_regs *eregs)
-{
-	ESPLOG(("esp%d: Resetting scsi bus\n", esp->esp_id));
-	esp->resetting_bus = 1;
-	esp_cmd(esp, eregs, ESP_CMD_RS);
-
-	return do_intr_end;
-}
-
-/* Reset ESP chip, reset hanging bus, then kill active and
- * disconnected commands for targets without soft reset.
- *
- * The host_lock is acquired by caller.
- */
-int esp_reset(Scsi_Cmnd *SCptr)
-{
-	struct NCR_ESP *esp = (struct NCR_ESP *) SCptr->device->host->hostdata;
-
-	spin_lock_irq(esp->ehost->host_lock);
-	(void) esp_do_resetbus(esp, esp->eregs);
-	spin_unlock_irq(esp->ehost->host_lock);
-
-	wait_event(esp->reset_queue, (esp->resetting_bus == 0));
-
-	return SUCCESS;
-}
-
-/* Internal ESP done function. */
-static void esp_done(struct NCR_ESP *esp, int error)
-{
-	Scsi_Cmnd *done_SC;
-
-	if(esp->current_SC) {
-		done_SC = esp->current_SC;
-		esp->current_SC = NULL;
-		esp_release_dmabufs(esp, done_SC);
-		done_SC->result = error;
-		done_SC->scsi_done(done_SC);
-
-		/* Bus is free, issue any commands in the queue. */
-		if(esp->issue_SC && !esp->current_SC)
-			esp_exec_cmd(esp);
-	} else {
-		/* Panic is safe as current_SC is null so we may still
-		 * be able to accept more commands to sync disk buffers.
-		 */
-		ESPLOG(("panicing\n"));
-		panic("esp: done() called with NULL esp->current_SC");
-	}
-}
-
-/* Wheee, ESP interrupt engine. */  
-
-/* Forward declarations. */
-static int esp_do_phase_determine(struct NCR_ESP *esp, 
-				  struct ESP_regs *eregs);
-static int esp_do_data_finale(struct NCR_ESP *esp, struct ESP_regs *eregs);
-static int esp_select_complete(struct NCR_ESP *esp, struct ESP_regs *eregs);
-static int esp_do_status(struct NCR_ESP *esp, struct ESP_regs *eregs);
-static int esp_do_msgin(struct NCR_ESP *esp, struct ESP_regs *eregs);
-static int esp_do_msgindone(struct NCR_ESP *esp, struct ESP_regs *eregs);
-static int esp_do_msgout(struct NCR_ESP *esp, struct ESP_regs *eregs);
-static int esp_do_cmdbegin(struct NCR_ESP *esp, struct ESP_regs *eregs);
-
-#define sreg_datainp(__sreg)  (((__sreg) & ESP_STAT_PMASK) == ESP_DIP)
-#define sreg_dataoutp(__sreg) (((__sreg) & ESP_STAT_PMASK) == ESP_DOP)
-
-/* We try to avoid some interrupts by jumping ahead and see if the ESP
- * has gotten far enough yet.  Hence the following.
- */
-static inline int skipahead1(struct NCR_ESP *esp, struct ESP_regs *eregs,
-			     Scsi_Cmnd *scp, int prev_phase, int new_phase)
-{
-	if(scp->SCp.sent_command != prev_phase)
-		return 0;
-
-	if(esp->dma_irq_p(esp)) {
-		/* Yes, we are able to save an interrupt. */
-		esp->sreg = (esp_read(eregs->esp_status) & ~(ESP_STAT_INTR));
-		esp->ireg = esp_read(eregs->esp_intrpt);
-		if(!(esp->ireg & ESP_INTR_SR))
-			return 0;
-		else
-			return do_reset_complete;
-	}
-	/* Ho hum, target is taking forever... */
-	scp->SCp.sent_command = new_phase; /* so we don't recurse... */
-	return do_intr_end;
-}
-
-static inline int skipahead2(struct NCR_ESP *esp,
-			     struct ESP_regs *eregs,
-			     Scsi_Cmnd *scp, int prev_phase1, int prev_phase2,
-			     int new_phase)
-{
-	if(scp->SCp.sent_command != prev_phase1 &&
-	   scp->SCp.sent_command != prev_phase2)
-		return 0;
-	if(esp->dma_irq_p(esp)) {
-		/* Yes, we are able to save an interrupt. */
-		esp->sreg = (esp_read(eregs->esp_status) & ~(ESP_STAT_INTR));
-		esp->ireg = esp_read(eregs->esp_intrpt);
-		if(!(esp->ireg & ESP_INTR_SR))
-			return 0;
-		else
-			return do_reset_complete;
-	}
-	/* Ho hum, target is taking forever... */
-	scp->SCp.sent_command = new_phase; /* so we don't recurse... */
-	return do_intr_end;
-}
-
-/* Misc. esp helper macros. */
-#define esp_setcount(__eregs, __cnt) \
-	esp_write((__eregs)->esp_tclow, ((__cnt) & 0xff)); \
-	esp_write((__eregs)->esp_tcmed, (((__cnt) >> 8) & 0xff))
-
-#define esp_getcount(__eregs) \
-	((esp_read((__eregs)->esp_tclow)&0xff) | \
-	 ((esp_read((__eregs)->esp_tcmed)&0xff) << 8))
-
-#define fcount(__esp, __eregs) \
-	(esp_read((__eregs)->esp_fflags) & ESP_FF_FBYTES)
-
-#define fnzero(__esp, __eregs) \
-	(esp_read((__eregs)->esp_fflags) & ESP_FF_ONOTZERO)
-
-/* XXX speculative nops unnecessary when continuing amidst a data phase
- * XXX even on esp100!!!  another case of flooding the bus with I/O reg
- * XXX writes...
- */
-#define esp_maybe_nop(__esp, __eregs) \
-	if((__esp)->erev == esp100) \
-		esp_cmd((__esp), (__eregs), ESP_CMD_NULL)
-
-#define sreg_to_dataphase(__sreg) \
-	((((__sreg) & ESP_STAT_PMASK) == ESP_DOP) ? in_dataout : in_datain)
-
-/* The ESP100 when in synchronous data phase, can mistake a long final
- * REQ pulse from the target as an extra byte, it places whatever is on
- * the data lines into the fifo.  For now, we will assume when this
- * happens that the target is a bit quirky and we don't want to
- * be talking synchronously to it anyways.  Regardless, we need to
- * tell the ESP to eat the extraneous byte so that we can proceed
- * to the next phase.
- */
-static inline int esp100_sync_hwbug(struct NCR_ESP *esp, struct ESP_regs *eregs,
-				    Scsi_Cmnd *sp, int fifocnt)
-{
-	/* Do not touch this piece of code. */
-	if((!(esp->erev == esp100)) ||
-	   (!(sreg_datainp((esp->sreg = esp_read(eregs->esp_status))) && !fifocnt) &&
-	    !(sreg_dataoutp(esp->sreg) && !fnzero(esp, eregs)))) {
-		if(sp->SCp.phase == in_dataout)
-			esp_cmd(esp, eregs, ESP_CMD_FLUSH);
-		return 0;
-	} else {
-		/* Async mode for this guy. */
-		build_sync_nego_msg(esp, 0, 0);
-
-		/* Ack the bogus byte, but set ATN first. */
-		esp_cmd(esp, eregs, ESP_CMD_SATN);
-		esp_cmd(esp, eregs, ESP_CMD_MOK);
-		return 1;
-	}
-}
-
-/* This closes the window during a selection with a reselect pending, because
- * we use DMA for the selection process the FIFO should hold the correct
- * contents if we get reselected during this process.  So we just need to
- * ack the possible illegal cmd interrupt pending on the esp100.
- */
-static inline int esp100_reconnect_hwbug(struct NCR_ESP *esp,
-					 struct ESP_regs *eregs)
-{
-	volatile unchar junk;
-
-	if(esp->erev != esp100)
-		return 0;
-	junk = esp_read(eregs->esp_intrpt);
-
-	if(junk & ESP_INTR_SR)
-		return 1;
-	return 0;
-}
-
-/* This verifies the BUSID bits during a reselection so that we know which
- * target is talking to us.
- */
-static inline int reconnect_target(struct NCR_ESP *esp, struct ESP_regs *eregs)
-{
-	int it, me = esp->scsi_id_mask, targ = 0;
-
-	if(2 != fcount(esp, eregs))
-		return -1;
-	it = esp_read(eregs->esp_fdata);
-	if(!(it & me))
-		return -1;
-	it &= ~me;
-	if(it & (it - 1))
-		return -1;
-	while(!(it & 1))
-		targ++, it >>= 1;
-	return targ;
-}
-
-/* This verifies the identify from the target so that we know which lun is
- * being reconnected.
- */
-static inline int reconnect_lun(struct NCR_ESP *esp, struct ESP_regs *eregs)
-{
-	int lun;
-
-	if((esp->sreg & ESP_STAT_PMASK) != ESP_MIP)
-		return -1;
-	lun = esp_read(eregs->esp_fdata);
-
-	/* Yes, you read this correctly.  We report lun of zero
-	 * if we see parity error.  ESP reports parity error for
-	 * the lun byte, and this is the only way to hope to recover
-	 * because the target is connected.
-	 */
-	if(esp->sreg & ESP_STAT_PERR)
-		return 0;
-
-	/* Check for illegal bits being set in the lun. */
-	if((lun & 0x40) || !(lun & 0x80))
-		return -1;
-
-	return lun & 7;
-}
-
-/* This puts the driver in a state where it can revitalize a command that
- * is being continued due to reselection.
- */
-static inline void esp_connect(struct NCR_ESP *esp, struct ESP_regs *eregs,
-			       Scsi_Cmnd *sp)
-{
-	struct scsi_device *dp = sp->device;
-	struct esp_device *esp_dev = dp->hostdata;
-
-	if(esp->prev_soff  != esp_dev->sync_max_offset ||
-	   esp->prev_stp   != esp_dev->sync_min_period ||
-	   (esp->erev > esp100a &&
-	    esp->prev_cfg3 != esp->config3[scmd_id(sp)])) {
-		esp->prev_soff = esp_dev->sync_max_offset;
-		esp_write(eregs->esp_soff, esp->prev_soff);
-		esp->prev_stp = esp_dev->sync_min_period;
-		esp_write(eregs->esp_stp, esp->prev_stp);
-		if(esp->erev > esp100a) {
-			esp->prev_cfg3 = esp->config3[scmd_id(sp)];
-			esp_write(eregs->esp_cfg3, esp->prev_cfg3);
-		} 
-	}
-	esp->current_SC = sp;
-}
-
-/* This will place the current working command back into the issue queue
- * if we are to receive a reselection amidst a selection attempt.
- */
-static inline void esp_reconnect(struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
-	if(!esp->disconnected_SC)
-		ESPLOG(("esp%d: Weird, being reselected but disconnected "
-			"command queue is empty.\n", esp->esp_id));
-	esp->snip = 0;
-	esp->current_SC = NULL;
-	sp->SCp.phase = not_issued;
-	append_SC(&esp->issue_SC, sp);
-}
-
-/* Begin message in phase. */
-static int esp_do_msgin(struct NCR_ESP *esp, struct ESP_regs *eregs)
-{
-	esp_cmd(esp, eregs, ESP_CMD_FLUSH);
-	esp_maybe_nop(esp, eregs);
-	esp_cmd(esp, eregs, ESP_CMD_TI);
-	esp->msgin_len = 1;
-	esp->msgin_ctr = 0;
-	esp_advance_phase(esp->current_SC, in_msgindone);
-	return do_work_bus;
-}
-
-static inline void advance_sg(struct NCR_ESP *esp, Scsi_Cmnd *sp)
-{
-	++sp->SCp.buffer;
-	--sp->SCp.buffers_residual;
-	sp->SCp.this_residual = sp->SCp.buffer->length;
-	if (esp->dma_advance_sg)
-		esp->dma_advance_sg (sp);
-	else
-		sp->SCp.ptr = (char *) virt_to_phys(sg_virt(sp->SCp.buffer));
-
-}
-
-/* Please note that the way I've coded these routines is that I _always_
- * check for a disconnect during any and all information transfer
- * phases.  The SCSI standard states that the target _can_ cause a BUS
- * FREE condition by dropping all MSG/CD/IO/BSY signals.  Also note
- * that during information transfer phases the target controls every
- * change in phase, the only thing the initiator can do is "ask" for
- * a message out phase by driving ATN true.  The target can, and sometimes
- * will, completely ignore this request so we cannot assume anything when
- * we try to force a message out phase to abort/reset a target.  Most of
- * the time the target will eventually be nice and go to message out, so
- * we may have to hold on to our state about what we want to tell the target
- * for some period of time.
- */
-
-/* I think I have things working here correctly.  Even partial transfers
- * within a buffer or sub-buffer should not upset us at all no matter
- * how bad the target and/or ESP fucks things up.
- */
-static int esp_do_data(struct NCR_ESP *esp, struct ESP_regs *eregs)
-{
-	Scsi_Cmnd *SCptr = esp->current_SC;
-	int thisphase, hmuch;
-
-	ESPDATA(("esp_do_data: "));
-	esp_maybe_nop(esp, eregs);
-	thisphase = sreg_to_dataphase(esp->sreg);
-	esp_advance_phase(SCptr, thisphase);
-	ESPDATA(("newphase<%s> ", (thisphase == in_datain) ? "DATAIN" : "DATAOUT"));
-	hmuch = esp->dma_can_transfer(esp, SCptr);
-
-	/*
-	 * XXX MSch: cater for PIO transfer here; PIO used if hmuch == 0
-	 */
-	if (hmuch) {	/* DMA */
-		/*
-		 * DMA
-		 */
-		ESPDATA(("hmuch<%d> ", hmuch));
-		esp->current_transfer_size = hmuch;
-		esp_setcount(eregs, (esp->fas_premature_intr_workaround ?
-				     (hmuch + 0x40) : hmuch));
-		esp->dma_setup(esp, (__u32)((unsigned long)SCptr->SCp.ptr), 
-			       hmuch, (thisphase == in_datain));
-		ESPDATA(("DMA|TI --> do_intr_end\n"));
-		esp_cmd(esp, eregs, ESP_CMD_DMA | ESP_CMD_TI);
-		return do_intr_end;
-		/*
-		 * end DMA
-		 */
-	} else {
-		/*
-		 * PIO
-		 */
-		int oldphase, i = 0; /* or where we left off last time ?? esp->current_data ?? */
-		int fifocnt = 0;
-		unsigned char *p = phys_to_virt((unsigned long)SCptr->SCp.ptr);
-
-		oldphase = esp_read(eregs->esp_status) & ESP_STAT_PMASK;
-
-		/*
-		 * polled transfer; ugly, can we make this happen in a DRQ 
-		 * interrupt handler ??
-		 * requires keeping track of state information in host or 
-		 * command struct!
-		 * Problem: I've never seen a DRQ happen on Mac, not even
-		 * with ESP_CMD_DMA ...
-		 */
-
-		/* figure out how much needs to be transferred */
-		hmuch = SCptr->SCp.this_residual;
-		ESPDATA(("hmuch<%d> pio ", hmuch));
-		esp->current_transfer_size = hmuch;
-
-		/* tell the ESP ... */
-		esp_setcount(eregs, hmuch);
-
-		/* loop */
-		while (hmuch) {
-			int j, fifo_stuck = 0, newphase;
-			unsigned long timeout;
-#if 0
-			unsigned long flags;
-#endif
-#if 0
-			if ( i % 10 )
-				ESPDATA(("\r"));
-			else
-				ESPDATA(( /*"\n"*/ "\r"));
-#endif
-#if 0
-			local_irq_save(flags);
-#endif
-			if(thisphase == in_datain) {
-				/* 'go' ... */ 
-				esp_cmd(esp, eregs, ESP_CMD_TI);
-
-				/* wait for data */
-				timeout = 1000000;
-				while (!((esp->sreg=esp_read(eregs->esp_status)) & ESP_STAT_INTR) && --timeout)
-					udelay(2);
-				if (timeout == 0)
-					printk("DRQ datain timeout! \n");
-
-				newphase = esp->sreg & ESP_STAT_PMASK;
-
-				/* see how much we got ... */
-				fifocnt = (esp_read(eregs->esp_fflags) & ESP_FF_FBYTES);
-
-				if (!fifocnt)
-					fifo_stuck++;
-				else
-					fifo_stuck = 0;
-
-				ESPDATA(("\rgot %d st %x ph %x", fifocnt, esp->sreg, newphase));
-
-				/* read fifo */
-				for(j=0;j<fifocnt;j++)
-					p[i++] = esp_read(eregs->esp_fdata);
-
-				ESPDATA(("(%d) ", i));
-
-				/* how many to go ?? */
-				hmuch -= fifocnt;
-
-				/* break if status phase !! */
-				if(newphase == ESP_STATP) {
-					/* clear int. */
-					esp->ireg = esp_read(eregs->esp_intrpt);
-					break;
-				}
-			} else {
-#define MAX_FIFO 8
-				/* how much will fit ? */
-				int this_count = MAX_FIFO - fifocnt;
-				if (this_count > hmuch)
-					this_count = hmuch;
-
-				/* fill fifo */
-				for(j=0;j<this_count;j++)
-					esp_write(eregs->esp_fdata, p[i++]);
-
-				/* how many left if this goes out ?? */
-				hmuch -= this_count;
-
-				/* 'go' ... */ 
-				esp_cmd(esp, eregs, ESP_CMD_TI);
-
-				/* wait for 'got it' */
-				timeout = 1000000;
-				while (!((esp->sreg=esp_read(eregs->esp_status)) & ESP_STAT_INTR) && --timeout)
-					udelay(2);
-				if (timeout == 0)
-					printk("DRQ dataout timeout!  \n");
-
-				newphase = esp->sreg & ESP_STAT_PMASK;
-
-				/* need to check how much was sent ?? */
-				fifocnt = (esp_read(eregs->esp_fflags) & ESP_FF_FBYTES);
-
-				ESPDATA(("\rsent %d st %x ph %x", this_count - fifocnt, esp->sreg, newphase));
-
-				ESPDATA(("(%d) ", i));
-
-				/* break if status phase !! */
-				if(newphase == ESP_STATP) {
-					/* clear int. */
-					esp->ireg = esp_read(eregs->esp_intrpt);
-					break;
-				}
-
-			}
-
-			/* clear int. */
-			esp->ireg = esp_read(eregs->esp_intrpt);
-
-			ESPDATA(("ir %x ... ", esp->ireg));
-
-			if (hmuch == 0)
-				ESPDATA(("done! \n"));
-
-#if 0
-			local_irq_restore(flags);
-#endif
-
-			/* check new bus phase */
-			if (newphase != oldphase && i < esp->current_transfer_size) {
-				/* something happened; disconnect ?? */
-				ESPDATA(("phase change, dropped out with %d done ... ", i));
-				break;
-			}
-
-			/* check int. status */
-			if (esp->ireg & ESP_INTR_DC) {
-				/* disconnect */
-				ESPDATA(("disconnect; %d transferred ... ", i));
-				break;
-			} else if (esp->ireg & ESP_INTR_FDONE) {
-				/* function done */
-				ESPDATA(("function done; %d transferred ... ", i));
-				break;
-			}
-
-			/* XXX fixme: bail out on stall */
-			if (fifo_stuck > 10) {
-				/* we're stuck */
-				ESPDATA(("fifo stall; %d transferred ... ", i));
-				break;
-			}
-		}
-
-		ESPDATA(("\n"));
-		/* check successful completion ?? */
-
-		if (thisphase == in_dataout)
-			hmuch += fifocnt; /* stuck?? adjust data pointer ...*/
-
-		/* tell do_data_finale how much was transferred */
-		esp->current_transfer_size -= hmuch;
-
-		/* still not completely sure on this one ... */		
-		return /*do_intr_end*/ do_work_bus /*do_phase_determine*/ ;
-
-		/*
-		 * end PIO
-		 */
-	}
-	return do_intr_end;
-}
-
-/* See how successful the data transfer was. */
-static int esp_do_data_finale(struct NCR_ESP *esp,
-			      struct ESP_regs *eregs)
-{
-	Scsi_Cmnd *SCptr = esp->current_SC;
-	struct esp_device *esp_dev = SCptr->device->hostdata;
-	int bogus_data = 0, bytes_sent = 0, fifocnt, ecount = 0;
-
-	if(esp->dma_led_off)
-		esp->dma_led_off(esp);
-
-	ESPDATA(("esp_do_data_finale: "));
-
-	if(SCptr->SCp.phase == in_datain) {
-		if(esp->sreg & ESP_STAT_PERR) {
-			/* Yuck, parity error.  The ESP asserts ATN
-			 * so that we can go to message out phase
-			 * immediately and inform the target that
-			 * something bad happened.
-			 */
-			ESPLOG(("esp%d: data bad parity detected.\n",
-				esp->esp_id));
-			esp->cur_msgout[0] = INITIATOR_ERROR;
-			esp->msgout_len = 1;
-		}
-		if(esp->dma_drain)
-			esp->dma_drain(esp);
-	}
-	if(esp->dma_invalidate)
-		esp->dma_invalidate(esp);
-
-	/* This could happen for the above parity error case. */
-	if(!(esp->ireg == ESP_INTR_BSERV)) {
-		/* Please go to msgout phase, please please please... */
-		ESPLOG(("esp%d: !BSERV after data, probably to msgout\n",
-			esp->esp_id));
-		return esp_do_phase_determine(esp, eregs);
-	}	
-
-	/* Check for partial transfers and other horrible events. */
-	fifocnt = (esp_read(eregs->esp_fflags) & ESP_FF_FBYTES);
-	ecount = esp_getcount(eregs);
-	if(esp->fas_premature_intr_workaround)
-		ecount -= 0x40;
-	bytes_sent = esp->current_transfer_size;
-
-	ESPDATA(("trans_sz=%d, ", bytes_sent));
-	if(!(esp->sreg & ESP_STAT_TCNT))
-		bytes_sent -= ecount;
-	if(SCptr->SCp.phase == in_dataout)
-		bytes_sent -= fifocnt;
-
-	ESPDATA(("bytes_sent=%d (ecount=%d, fifocnt=%d), ", bytes_sent,
-		 ecount, fifocnt));
-
-	/* If we were in synchronous mode, check for peculiarities. */
-	if(esp_dev->sync_max_offset)
-		bogus_data = esp100_sync_hwbug(esp, eregs, SCptr, fifocnt);
-	else
-		esp_cmd(esp, eregs, ESP_CMD_FLUSH);
-
-	/* Until we are sure of what has happened, we are certainly
-	 * in the dark.
-	 */
-	esp_advance_phase(SCptr, in_the_dark);
-
-	/* Check for premature interrupt condition. Can happen on FAS2x6
-	 * chips. QLogic recommends a workaround by overprogramming the
-	 * transfer counters, but this makes doing scatter-gather impossible.
-	 * Until there is a way to disable scatter-gather for a single target,
-	 * and not only for the entire host adapter as it is now, the workaround
-	 * is way to expensive performance wise.
-	 * Instead, it turns out that when this happens the target has disconnected
-	 * already but it doesn't show in the interrupt register. Compensate for
-	 * that here to try and avoid a SCSI bus reset.
-	 */
-	if(!esp->fas_premature_intr_workaround && (fifocnt == 1) &&
-	   sreg_dataoutp(esp->sreg)) {
-		ESPLOG(("esp%d: Premature interrupt, enabling workaround\n",
-			esp->esp_id));
-#if 0
-		/* Disable scatter-gather operations, they are not possible
-		 * when using this workaround.
-		 */
-		esp->ehost->sg_tablesize = 0;
-		esp->ehost->use_clustering = ENABLE_CLUSTERING;
-		esp->fas_premature_intr_workaround = 1;
-		bytes_sent = 0;
-		if(SCptr->use_sg) {
-			ESPLOG(("esp%d: Aborting scatter-gather operation\n",
-				esp->esp_id));
-			esp->cur_msgout[0] = ABORT;
-			esp->msgout_len = 1;
-			esp->msgout_ctr = 0;
-			esp_cmd(esp, eregs, ESP_CMD_SATN);
-			esp_setcount(eregs, 0xffff);
-			esp_cmd(esp, eregs, ESP_CMD_NULL);
-			esp_cmd(esp, eregs, ESP_CMD_TPAD | ESP_CMD_DMA);
-			return do_intr_end;
-		}
-#else
-		/* Just set the disconnected bit. That's what appears to
-		 * happen anyway. The state machine will pick it up when
-		 * we return.
-		 */
-		esp->ireg |= ESP_INTR_DC;
-#endif
-        }
-
-	if(bytes_sent < 0) {
-		/* I've seen this happen due to lost state in this
-		 * driver.  No idea why it happened, but allowing
-		 * this value to be negative caused things to
-		 * lock up.  This allows greater chance of recovery.
-		 * In fact every time I've seen this, it has been
-		 * a driver bug without question.
-		 */
-		ESPLOG(("esp%d: yieee, bytes_sent < 0!\n", esp->esp_id));
-		ESPLOG(("esp%d: csz=%d fifocount=%d ecount=%d\n",
-			esp->esp_id,
-			esp->current_transfer_size, fifocnt, ecount));
-		ESPLOG(("esp%d: use_sg=%d ptr=%p this_residual=%d\n",
-			esp->esp_id,
-			SCptr->use_sg, SCptr->SCp.ptr, SCptr->SCp.this_residual));
-		ESPLOG(("esp%d: Forcing async for target %d\n", esp->esp_id, 
-			SCptr->device->id));
-		SCptr->device->borken = 1;
-		esp_dev->sync = 0;
-		bytes_sent = 0;
-	}
-
-	/* Update the state of our transfer. */
-	SCptr->SCp.ptr += bytes_sent;
-	SCptr->SCp.this_residual -= bytes_sent;
-	if(SCptr->SCp.this_residual < 0) {
-		/* shit */
-		ESPLOG(("esp%d: Data transfer overrun.\n", esp->esp_id));
-		SCptr->SCp.this_residual = 0;
-	}
-
-	/* Maybe continue. */
-	if(!bogus_data) {
-		ESPDATA(("!bogus_data, "));
-		/* NO MATTER WHAT, we advance the scatterlist,
-		 * if the target should decide to disconnect
-		 * in between scatter chunks (which is common)
-		 * we could die horribly!  I used to have the sg
-		 * advance occur only if we are going back into
-		 * (or are staying in) a data phase, you can
-		 * imagine the hell I went through trying to
-		 * figure this out.
-		 */
-		if(!SCptr->SCp.this_residual && SCptr->SCp.buffers_residual)
-			advance_sg(esp, SCptr);
-#ifdef DEBUG_ESP_DATA
-		if(sreg_datainp(esp->sreg) || sreg_dataoutp(esp->sreg)) {
-			ESPDATA(("to more data\n"));
-		} else {
-			ESPDATA(("to new phase\n"));
-		}
-#endif
-		return esp_do_phase_determine(esp, eregs);
-	}
-	/* Bogus data, just wait for next interrupt. */
-	ESPLOG(("esp%d: bogus_data during end of data phase\n",
-		esp->esp_id));
-	return do_intr_end;
-}
-
-/* We received a non-good status return at the end of
- * running a SCSI command.  This is used to decide if
- * we should clear our synchronous transfer state for
- * such a device when that happens.
- *
- * The idea is that when spinning up a disk or rewinding
- * a tape, we don't want to go into a loop re-negotiating
- * synchronous capabilities over and over.
- */
-static int esp_should_clear_sync(Scsi_Cmnd *sp)
-{
-	unchar cmd = sp->cmnd[0];
-
-	/* These cases are for spinning up a disk and
-	 * waiting for that spinup to complete.
-	 */
-	if(cmd == START_STOP)
-		return 0;
-
-	if(cmd == TEST_UNIT_READY)
-		return 0;
-
-	/* One more special case for SCSI tape drives,
-	 * this is what is used to probe the device for
-	 * completion of a rewind or tape load operation.
-	 */
-	if(sp->device->type == TYPE_TAPE && cmd == MODE_SENSE)
-		return 0;
-
-	return 1;
-}
-
-/* Either a command is completing or a target is dropping off the bus
- * to continue the command in the background so we can do other work.
- */
-static int esp_do_freebus(struct NCR_ESP *esp, struct ESP_regs *eregs)
-{
-	Scsi_Cmnd *SCptr = esp->current_SC;
-	int rval;
-
-	rval = skipahead2(esp, eregs, SCptr, in_status, in_msgindone, in_freeing);
-	if(rval)
-		return rval;
-
-	if(esp->ireg != ESP_INTR_DC) {
-		ESPLOG(("esp%d: Target will not disconnect\n", esp->esp_id));
-		return do_reset_bus; /* target will not drop BSY... */
-	}
-	esp->msgout_len = 0;
-	esp->prevmsgout = NOP;
-	if(esp->prevmsgin == COMMAND_COMPLETE) {
-		struct esp_device *esp_dev = SCptr->device->hostdata;
-		/* Normal end of nexus. */
-		if(esp->disconnected_SC)
-			esp_cmd(esp, eregs, ESP_CMD_ESEL);
-
-		if(SCptr->SCp.Status != GOOD &&
-		   SCptr->SCp.Status != CONDITION_GOOD &&
-		   ((1<<scmd_id(SCptr)) & esp->targets_present) &&
-		   esp_dev->sync && esp_dev->sync_max_offset) {
-			/* SCSI standard says that the synchronous capabilities
-			 * should be renegotiated at this point.  Most likely
-			 * we are about to request sense from this target
-			 * in which case we want to avoid using sync
-			 * transfers until we are sure of the current target
-			 * state.
-			 */
-			ESPMISC(("esp: Status <%d> for target %d lun %d\n",
-				 SCptr->SCp.Status, SCptr->device->id, SCptr->device->lun));
-
-			/* But don't do this when spinning up a disk at
-			 * boot time while we poll for completion as it
-			 * fills up the console with messages.  Also, tapes
-			 * can report not ready many times right after
-			 * loading up a tape.
-			 */
-			if(esp_should_clear_sync(SCptr) != 0)
-				esp_dev->sync = 0;
-		}
-		ESPDISC(("F<%02x,%02x>", SCptr->device->id, SCptr->device->lun));
-		esp_done(esp, ((SCptr->SCp.Status & 0xff) |
-			       ((SCptr->SCp.Message & 0xff)<<8) |
-			       (DID_OK << 16)));
-	} else if(esp->prevmsgin == DISCONNECT) {
-		/* Normal disconnect. */
-		esp_cmd(esp, eregs, ESP_CMD_ESEL);
-		ESPDISC(("D<%02x,%02x>", SCptr->device->id, SCptr->device->lun));
-		append_SC(&esp->disconnected_SC, SCptr);
-		esp->current_SC = NULL;
-		if(esp->issue_SC)
-			esp_exec_cmd(esp);
-	} else {
-		/* Driver bug, we do not expect a disconnect here
-		 * and should not have advanced the state engine
-		 * to in_freeing.
-		 */
-		ESPLOG(("esp%d: last msg not disc and not cmd cmplt.\n",
-			esp->esp_id));
-		return do_reset_bus;
-	}
-	return do_intr_end;
-}
-
-/* When a reselect occurs, and we cannot find the command to
- * reconnect to in our queues, we do this.
- */
-static int esp_bad_reconnect(struct NCR_ESP *esp)
-{
-	Scsi_Cmnd *sp;
-
-	ESPLOG(("esp%d: Eieeee, reconnecting unknown command!\n",
-		esp->esp_id));
-	ESPLOG(("QUEUE DUMP\n"));
-	sp = esp->issue_SC;
-	ESPLOG(("esp%d: issue_SC[", esp->esp_id));
-	while(sp) {
-		ESPLOG(("<%02x,%02x>", sp->device->id, sp->device->lun));
-		sp = (Scsi_Cmnd *) sp->host_scribble;
-	}
-	ESPLOG(("]\n"));
-	sp = esp->current_SC;
-	ESPLOG(("esp%d: current_SC[", esp->esp_id));
-	while(sp) {
-		ESPLOG(("<%02x,%02x>", sp->device->id, sp->device->lun));
-		sp = (Scsi_Cmnd *) sp->host_scribble;
-	}
-	ESPLOG(("]\n"));
-	sp = esp->disconnected_SC;
-	ESPLOG(("esp%d: disconnected_SC[", esp->esp_id));
-	while(sp) {
-		ESPLOG(("<%02x,%02x>", sp->device->id, sp->device->lun));
-		sp = (Scsi_Cmnd *) sp->host_scribble;
-	}
-	ESPLOG(("]\n"));
-	return do_reset_bus;
-}
-
-/* Do the needy when a target tries to reconnect to us. */
-static int esp_do_reconnect(struct NCR_ESP *esp, 
-			    struct ESP_regs *eregs)
-{
-	int lun, target;
-	Scsi_Cmnd *SCptr;
-
-	/* Check for all bogus conditions first. */
-	target = reconnect_target(esp, eregs);
-	if(target < 0) {
-		ESPDISC(("bad bus bits\n"));
-		return do_reset_bus;
-	}
-	lun = reconnect_lun(esp, eregs);
-	if(lun < 0) {
-		ESPDISC(("target=%2x, bad identify msg\n", target));
-		return do_reset_bus;
-	}
-
-	/* Things look ok... */
-	ESPDISC(("R<%02x,%02x>", target, lun));
-
-	esp_cmd(esp, eregs, ESP_CMD_FLUSH);
-	if(esp100_reconnect_hwbug(esp, eregs))
-		return do_reset_bus;
-	esp_cmd(esp, eregs, ESP_CMD_NULL);
-
-	SCptr = remove_SC(&esp->disconnected_SC, (unchar) target, (unchar) lun);
-	if(!SCptr)
-		return esp_bad_reconnect(esp);
-
-	esp_connect(esp, eregs, SCptr);
-	esp_cmd(esp, eregs, ESP_CMD_MOK);
-
-	/* Reconnect implies a restore pointers operation. */
-	esp_restore_pointers(esp, SCptr);
-
-	esp->snip = 0;
-	esp_advance_phase(SCptr, in_the_dark);
-	return do_intr_end;
-}
-
-/* End of NEXUS (hopefully), pick up status + message byte then leave if
- * all goes well.
- */
-static int esp_do_status(struct NCR_ESP *esp, struct ESP_regs *eregs)
-{
-	Scsi_Cmnd *SCptr = esp->current_SC;
-	int intr, rval;
-
-	rval = skipahead1(esp, eregs, SCptr, in_the_dark, in_status);
-	if(rval)
-		return rval;
-
-	intr = esp->ireg;
-	ESPSTAT(("esp_do_status: "));
-	if(intr != ESP_INTR_DC) {
-		int message_out = 0; /* for parity problems */
-
-		/* Ack the message. */
-		ESPSTAT(("ack msg, "));
-		esp_cmd(esp, eregs, ESP_CMD_MOK);
-
-		if(esp->dma_poll)
-			esp->dma_poll(esp, (unsigned char *) esp->esp_command);
-
-		ESPSTAT(("got something, "));
-		/* ESP chimes in with one of
-		 *
-		 * 1) function done interrupt:
-		 *	both status and message in bytes
-		 *	are available
-		 *
-		 * 2) bus service interrupt:
-		 *	only status byte was acquired
-		 *
-		 * 3) Anything else:
-		 *	can't happen, but we test for it
-		 *	anyways
-		 *
-		 * ALSO: If bad parity was detected on either
-		 *       the status _or_ the message byte then
-		 *       the ESP has asserted ATN on the bus
-		 *       and we must therefore wait for the
-		 *       next phase change.
-		 */
-		if(intr & ESP_INTR_FDONE) {
-			/* We got it all, hallejulia. */
-			ESPSTAT(("got both, "));
-			SCptr->SCp.Status = esp->esp_command[0];
-			SCptr->SCp.Message = esp->esp_command[1];
-			esp->prevmsgin = SCptr->SCp.Message;
-			esp->cur_msgin[0] = SCptr->SCp.Message;
-			if(esp->sreg & ESP_STAT_PERR) {
-				/* There was bad parity for the
-				 * message byte, the status byte
-				 * was ok.
-				 */
-				message_out = MSG_PARITY_ERROR;
-			}
-		} else if(intr == ESP_INTR_BSERV) {
-			/* Only got status byte. */
-			ESPLOG(("esp%d: got status only, ", esp->esp_id));
-			if(!(esp->sreg & ESP_STAT_PERR)) {
-				SCptr->SCp.Status = esp->esp_command[0];
-				SCptr->SCp.Message = 0xff;
-			} else {
-				/* The status byte had bad parity.
-				 * we leave the scsi_pointer Status
-				 * field alone as we set it to a default
-				 * of CHECK_CONDITION in esp_queue.
-				 */
-				message_out = INITIATOR_ERROR;
-			}
-		} else {
-			/* This shouldn't happen ever. */
-			ESPSTAT(("got bolixed\n"));
-			esp_advance_phase(SCptr, in_the_dark);
-			return esp_do_phase_determine(esp, eregs);
-		}
-
-		if(!message_out) {
-			ESPSTAT(("status=%2x msg=%2x, ", SCptr->SCp.Status,
-				SCptr->SCp.Message));
-			if(SCptr->SCp.Message == COMMAND_COMPLETE) {
-				ESPSTAT(("and was COMMAND_COMPLETE\n"));
-				esp_advance_phase(SCptr, in_freeing);
-				return esp_do_freebus(esp, eregs);
-			} else {
-				ESPLOG(("esp%d: and _not_ COMMAND_COMPLETE\n",
-					esp->esp_id));
-				esp->msgin_len = esp->msgin_ctr = 1;
-				esp_advance_phase(SCptr, in_msgindone);
-				return esp_do_msgindone(esp, eregs);
-			}
-		} else {
-			/* With luck we'll be able to let the target
-			 * know that bad parity happened, it will know
-			 * which byte caused the problems and send it
-			 * again.  For the case where the status byte
-			 * receives bad parity, I do not believe most
-			 * targets recover very well.  We'll see.
-			 */
-			ESPLOG(("esp%d: bad parity somewhere mout=%2x\n",
-				esp->esp_id, message_out));
-			esp->cur_msgout[0] = message_out;
-			esp->msgout_len = esp->msgout_ctr = 1;
-			esp_advance_phase(SCptr, in_the_dark);
-			return esp_do_phase_determine(esp, eregs);
-		}
-	} else {
-		/* If we disconnect now, all hell breaks loose. */
-		ESPLOG(("esp%d: whoops, disconnect\n", esp->esp_id));
-		esp_advance_phase(SCptr, in_the_dark);
-		return esp_do_phase_determine(esp, eregs);
-	}
-}
-
-static int esp_enter_status(struct NCR_ESP *esp,
-			    struct ESP_regs *eregs)
-{
-	unchar thecmd = ESP_CMD_ICCSEQ;
-
-	esp_cmd(esp, eregs, ESP_CMD_FLUSH);
-
-	if(esp->do_pio_cmds) {
-		esp_advance_phase(esp->current_SC, in_status);
-		esp_cmd(esp, eregs, thecmd);
-		while(!(esp_read(esp->eregs->esp_status) & ESP_STAT_INTR));
-		esp->esp_command[0] = esp_read(eregs->esp_fdata);
-                while(!(esp_read(esp->eregs->esp_status) & ESP_STAT_INTR));
-                esp->esp_command[1] = esp_read(eregs->esp_fdata);
-	} else {
-		esp->esp_command[0] = esp->esp_command[1] = 0xff;
-		esp_write(eregs->esp_tclow, 2);
-		esp_write(eregs->esp_tcmed, 0);
-		esp->dma_init_read(esp, esp->esp_command_dvma, 2);
-		thecmd |= ESP_CMD_DMA;
-		esp_cmd(esp, eregs, thecmd);
-		esp_advance_phase(esp->current_SC, in_status);
-	}
-
-	return esp_do_status(esp, eregs);
-}
-
-static int esp_disconnect_amidst_phases(struct NCR_ESP *esp,
-					struct ESP_regs *eregs)
-{
-	Scsi_Cmnd *sp = esp->current_SC;
-	struct esp_device *esp_dev = sp->device->hostdata;
-
-	/* This means real problems if we see this
-	 * here.  Unless we were actually trying
-	 * to force the device to abort/reset.
-	 */
-	ESPLOG(("esp%d: Disconnect amidst phases, ", esp->esp_id));
-	ESPLOG(("pphase<%s> cphase<%s>, ",
-		phase_string(sp->SCp.phase),
-		phase_string(sp->SCp.sent_command)));
-
-	if(esp->disconnected_SC)
-		esp_cmd(esp, eregs, ESP_CMD_ESEL);
-
-	switch(esp->cur_msgout[0]) {
-	default:
-		/* We didn't expect this to happen at all. */
-		ESPLOG(("device is bolixed\n"));
-		esp_advance_phase(sp, in_tgterror);
-		esp_done(esp, (DID_ERROR << 16));
-		break;
-
-	case BUS_DEVICE_RESET:
-		ESPLOG(("device reset successful\n"));
-		esp_dev->sync_max_offset = 0;
-		esp_dev->sync_min_period = 0;
-		esp_dev->sync = 0;
-		esp_advance_phase(sp, in_resetdev);
-		esp_done(esp, (DID_RESET << 16));
-		break;
-
-	case ABORT:
-		ESPLOG(("device abort successful\n"));
-		esp_advance_phase(sp, in_abortone);
-		esp_done(esp, (DID_ABORT << 16));
-		break;
-
-	};
-	return do_intr_end;
-}
-
-static int esp_enter_msgout(struct NCR_ESP *esp,
-			    struct ESP_regs *eregs)
-{
-	esp_advance_phase(esp->current_SC, in_msgout);
-	return esp_do_msgout(esp, eregs);
-}
-
-static int esp_enter_msgin(struct NCR_ESP *esp,
-			   struct ESP_regs *eregs)
-{
-	esp_advance_phase(esp->current_SC, in_msgin);
-	return esp_do_msgin(esp, eregs);
-}
-
-static int esp_enter_cmd(struct NCR_ESP *esp,
-			 struct ESP_regs *eregs)
-{
-	esp_advance_phase(esp->current_SC, in_cmdbegin);
-	return esp_do_cmdbegin(esp, eregs);
-}
-
-static int esp_enter_badphase(struct NCR_ESP *esp,
-			      struct ESP_regs *eregs)
-{
-	ESPLOG(("esp%d: Bizarre bus phase %2x.\n", esp->esp_id,
-		esp->sreg & ESP_STAT_PMASK));
-	return do_reset_bus;
-}
-
-typedef int (*espfunc_t)(struct NCR_ESP *,
-			 struct ESP_regs *);
-
-static espfunc_t phase_vector[] = {
-	esp_do_data,		/* ESP_DOP */
-	esp_do_data,		/* ESP_DIP */
-	esp_enter_cmd,		/* ESP_CMDP */
-	esp_enter_status,	/* ESP_STATP */
-	esp_enter_badphase,	/* ESP_STAT_PMSG */
-	esp_enter_badphase,	/* ESP_STAT_PMSG | ESP_STAT_PIO */
-	esp_enter_msgout,	/* ESP_MOP */
-	esp_enter_msgin,	/* ESP_MIP */
-};
-
-/* The target has control of the bus and we have to see where it has
- * taken us.
- */
-static int esp_do_phase_determine(struct NCR_ESP *esp,
-				  struct ESP_regs *eregs)
-{
-	if ((esp->ireg & ESP_INTR_DC) != 0)
-		return esp_disconnect_amidst_phases(esp, eregs);
-	return phase_vector[esp->sreg & ESP_STAT_PMASK](esp, eregs);
-}
-
-/* First interrupt after exec'ing a cmd comes here. */
-static int esp_select_complete(struct NCR_ESP *esp, struct ESP_regs *eregs)
-{
-	Scsi_Cmnd *SCptr = esp->current_SC;
-	struct esp_device *esp_dev = SCptr->device->hostdata;
-	int cmd_bytes_sent, fcnt;
-
-	fcnt = (esp_read(eregs->esp_fflags) & ESP_FF_FBYTES);
-	cmd_bytes_sent = esp->dma_bytes_sent(esp, fcnt);
-	if(esp->dma_invalidate)
-		esp->dma_invalidate(esp);
-
-	/* Let's check to see if a reselect happened
-	 * while we we're trying to select.  This must
-	 * be checked first.
-	 */
-	if(esp->ireg == (ESP_INTR_RSEL | ESP_INTR_FDONE)) {
-		esp_reconnect(esp, SCptr);
-		return esp_do_reconnect(esp, eregs);
-	}
-
-	/* Looks like things worked, we should see a bus service &
-	 * a function complete interrupt at this point.  Note we
-	 * are doing a direct comparison because we don't want to
-	 * be fooled into thinking selection was successful if
-	 * ESP_INTR_DC is set, see below.
-	 */
-	if(esp->ireg == (ESP_INTR_FDONE | ESP_INTR_BSERV)) {
-		/* target speaks... */
-		esp->targets_present |= (1<<scmd_id(SCptr));
-
-		/* What if the target ignores the sdtr? */
-		if(esp->snip)
-			esp_dev->sync = 1;
-
-		/* See how far, if at all, we got in getting
-		 * the information out to the target.
-		 */
-		switch(esp->seqreg) {
-		default:
-
-		case ESP_STEP_ASEL:
-			/* Arbitration won, target selected, but
-			 * we are in some phase which is not command
-			 * phase nor is it message out phase.
-			 *
-			 * XXX We've confused the target, obviously.
-			 * XXX So clear it's state, but we also end
-			 * XXX up clearing everyone elses.  That isn't
-			 * XXX so nice.  I'd like to just reset this
-			 * XXX target, but if I cannot even get it's
-			 * XXX attention and finish selection to talk
-			 * XXX to it, there is not much more I can do.
-			 * XXX If we have a loaded bus we're going to
-			 * XXX spend the next second or so renegotiating
-			 * XXX for synchronous transfers.
-			 */
-			ESPLOG(("esp%d: STEP_ASEL for tgt %d\n",
-				esp->esp_id, SCptr->device->id));
-
-		case ESP_STEP_SID:
-			/* Arbitration won, target selected, went
-			 * to message out phase, sent one message
-			 * byte, then we stopped.  ATN is asserted
-			 * on the SCSI bus and the target is still
-			 * there hanging on.  This is a legal
-			 * sequence step if we gave the ESP a select
-			 * and stop command.
-			 *
-			 * XXX See above, I could set the borken flag
-			 * XXX in the device struct and retry the
-			 * XXX command.  But would that help for
-			 * XXX tagged capable targets?
-			 */
-
-		case ESP_STEP_NCMD:
-			/* Arbitration won, target selected, maybe
-			 * sent the one message byte in message out
-			 * phase, but we did not go to command phase
-			 * in the end.  Actually, we could have sent
-			 * only some of the message bytes if we tried
-			 * to send out the entire identify and tag
-			 * message using ESP_CMD_SA3.
-			 */
-			cmd_bytes_sent = 0;
-			break;
-
-		case ESP_STEP_PPC:
-			/* No, not the powerPC pinhead.  Arbitration
-			 * won, all message bytes sent if we went to
-			 * message out phase, went to command phase
-			 * but only part of the command was sent.
-			 *
-			 * XXX I've seen this, but usually in conjunction
-			 * XXX with a gross error which appears to have
-			 * XXX occurred between the time I told the
-			 * XXX ESP to arbitrate and when I got the
-			 * XXX interrupt.  Could I have misloaded the
-			 * XXX command bytes into the fifo?  Actually,
-			 * XXX I most likely missed a phase, and therefore
-			 * XXX went into never never land and didn't even
-			 * XXX know it.  That was the old driver though.
-			 * XXX What is even more peculiar is that the ESP
-			 * XXX showed the proper function complete and
-			 * XXX bus service bits in the interrupt register.
-			 */
-
-		case ESP_STEP_FINI4:
-		case ESP_STEP_FINI5:
-		case ESP_STEP_FINI6:
-		case ESP_STEP_FINI7:
-			/* Account for the identify message */
-			if(SCptr->SCp.phase == in_slct_norm)
-				cmd_bytes_sent -= 1;
-		};
-		esp_cmd(esp, eregs, ESP_CMD_NULL);
-
-		/* Be careful, we could really get fucked during synchronous
-		 * data transfers if we try to flush the fifo now.
-		 */
-		if(!fcnt && /* Fifo is empty and... */
-		   /* either we are not doing synchronous transfers or... */
-		   (!esp_dev->sync_max_offset ||
-		    /* We are not going into data in phase. */
-		    ((esp->sreg & ESP_STAT_PMASK) != ESP_DIP)))
-			esp_cmd(esp, eregs, ESP_CMD_FLUSH); /* flush is safe */
-
-		/* See how far we got if this is not a slow command. */
-		if(!esp->esp_slowcmd) {
-			if(cmd_bytes_sent < 0)
-				cmd_bytes_sent = 0;
-			if(cmd_bytes_sent != SCptr->cmd_len) {
-				/* Crapola, mark it as a slowcmd
-				 * so that we have some chance of
-				 * keeping the command alive with
-				 * good luck.
-				 *
-				 * XXX Actually, if we didn't send it all
-				 * XXX this means either we didn't set things
-				 * XXX up properly (driver bug) or the target
-				 * XXX or the ESP detected parity on one of
-				 * XXX the command bytes.  This makes much
-				 * XXX more sense, and therefore this code
-				 * XXX should be changed to send out a
-				 * XXX parity error message or if the status
-				 * XXX register shows no parity error then
-				 * XXX just expect the target to bring the
-				 * XXX bus into message in phase so that it
-				 * XXX can send us the parity error message.
-				 * XXX SCSI sucks...
-				 */
-				esp->esp_slowcmd = 1;
-				esp->esp_scmdp = &(SCptr->cmnd[cmd_bytes_sent]);
-				esp->esp_scmdleft = (SCptr->cmd_len - cmd_bytes_sent);
-			}
-		}
-
-		/* Now figure out where we went. */
-		esp_advance_phase(SCptr, in_the_dark);
-		return esp_do_phase_determine(esp, eregs);
-	}
-
-	/* Did the target even make it? */
-	if(esp->ireg == ESP_INTR_DC) {
-		/* wheee... nobody there or they didn't like
-		 * what we told it to do, clean up.
-		 */
-
-		/* If anyone is off the bus, but working on
-		 * a command in the background for us, tell
-		 * the ESP to listen for them.
-		 */
-		if(esp->disconnected_SC)
-			esp_cmd(esp, eregs, ESP_CMD_ESEL);
-
-		if(((1<<SCptr->device->id) & esp->targets_present) &&
-		   esp->seqreg && esp->cur_msgout[0] == EXTENDED_MESSAGE &&
-		   (SCptr->SCp.phase == in_slct_msg ||
-		    SCptr->SCp.phase == in_slct_stop)) {
-			/* shit */
-			esp->snip = 0;
-			ESPLOG(("esp%d: Failed synchronous negotiation for target %d "
-				"lun %d\n", esp->esp_id, SCptr->device->id, SCptr->device->lun));
-			esp_dev->sync_max_offset = 0;
-			esp_dev->sync_min_period = 0;
-			esp_dev->sync = 1; /* so we don't negotiate again */
-
-			/* Run the command again, this time though we
-			 * won't try to negotiate for synchronous transfers.
-			 *
-			 * XXX I'd like to do something like send an
-			 * XXX INITIATOR_ERROR or ABORT message to the
-			 * XXX target to tell it, "Sorry I confused you,
-			 * XXX please come back and I will be nicer next
-			 * XXX time".  But that requires having the target
-			 * XXX on the bus, and it has dropped BSY on us.
-			 */
-			esp->current_SC = NULL;
-			esp_advance_phase(SCptr, not_issued);
-			prepend_SC(&esp->issue_SC, SCptr);
-			esp_exec_cmd(esp);
-			return do_intr_end;
-		}
-
-		/* Ok, this is normal, this is what we see during boot
-		 * or whenever when we are scanning the bus for targets.
-		 * But first make sure that is really what is happening.
-		 */
-		if(((1<<SCptr->device->id) & esp->targets_present)) {
-			ESPLOG(("esp%d: Warning, live target %d not responding to "
-				"selection.\n", esp->esp_id, SCptr->device->id));
-
-			/* This _CAN_ happen.  The SCSI standard states that
-			 * the target is to _not_ respond to selection if
-			 * _it_ detects bad parity on the bus for any reason.
-			 * Therefore, we assume that if we've talked successfully
-			 * to this target before, bad parity is the problem.
-			 */
-			esp_done(esp, (DID_PARITY << 16));
-		} else {
-			/* Else, there really isn't anyone there. */
-			ESPMISC(("esp: selection failure, maybe nobody there?\n"));
-			ESPMISC(("esp: target %d lun %d\n",
-				 SCptr->device->id, SCptr->device->lun));
-			esp_done(esp, (DID_BAD_TARGET << 16));
-		}
-		return do_intr_end;
-	}
-
-
-	ESPLOG(("esp%d: Selection failure.\n", esp->esp_id));
-	printk("esp%d: Currently -- ", esp->esp_id);
-	esp_print_ireg(esp->ireg);
-	printk(" ");
-	esp_print_statreg(esp->sreg);
-	printk(" ");
-	esp_print_seqreg(esp->seqreg);
-	printk("\n");
-	printk("esp%d: New -- ", esp->esp_id);
-	esp->sreg = esp_read(eregs->esp_status);
-	esp->seqreg = esp_read(eregs->esp_sstep);
-	esp->ireg = esp_read(eregs->esp_intrpt);
-	esp_print_ireg(esp->ireg);
-	printk(" ");
-	esp_print_statreg(esp->sreg);
-	printk(" ");
-	esp_print_seqreg(esp->seqreg);
-	printk("\n");
-	ESPLOG(("esp%d: resetting bus\n", esp->esp_id));
-	return do_reset_bus; /* ugh... */
-}
-
-/* Continue reading bytes for msgin phase. */
-static int esp_do_msgincont(struct NCR_ESP *esp, struct ESP_regs *eregs)
-{
-	if(esp->ireg & ESP_INTR_BSERV) {
-		/* in the right phase too? */
-		if((esp->sreg & ESP_STAT_PMASK) == ESP_MIP) {
-			/* phew... */
-			esp_cmd(esp, eregs, ESP_CMD_TI);
-			esp_advance_phase(esp->current_SC, in_msgindone);
-			return do_intr_end;
-		}
-
-		/* We changed phase but ESP shows bus service,
-		 * in this case it is most likely that we, the
-		 * hacker who has been up for 20hrs straight
-		 * staring at the screen, drowned in coffee
-		 * smelling like retched cigarette ashes
-		 * have miscoded something..... so, try to
-		 * recover as best we can.
-		 */
-		ESPLOG(("esp%d: message in mis-carriage.\n", esp->esp_id));
-	}
-	esp_advance_phase(esp->current_SC, in_the_dark);
-	return do_phase_determine;
-}
-
-static int check_singlebyte_msg(struct NCR_ESP *esp,
-				struct ESP_regs *eregs)
-{
-	esp->prevmsgin = esp->cur_msgin[0];
-	if(esp->cur_msgin[0] & 0x80) {
-		/* wheee... */
-		ESPLOG(("esp%d: target sends identify amidst phases\n",
-			esp->esp_id));
-		esp_advance_phase(esp->current_SC, in_the_dark);
-		return 0;
-	} else if(((esp->cur_msgin[0] & 0xf0) == 0x20) ||
-		  (esp->cur_msgin[0] == EXTENDED_MESSAGE)) {
-		esp->msgin_len = 2;
-		esp_advance_phase(esp->current_SC, in_msgincont);
-		return 0;
-	}
-	esp_advance_phase(esp->current_SC, in_the_dark);
-	switch(esp->cur_msgin[0]) {
-	default:
-		/* We don't want to hear about it. */
-		ESPLOG(("esp%d: msg %02x which we don't know about\n", esp->esp_id,
-			esp->cur_msgin[0]));
-		return MESSAGE_REJECT;
-
-	case NOP:
-		ESPLOG(("esp%d: target %d sends a nop\n", esp->esp_id,
-			esp->current_SC->device->id));
-		return 0;
-
-	case RESTORE_POINTERS:
-		/* In this case we might also have to backup the
-		 * "slow command" pointer.  It is rare to get such
-		 * a save/restore pointer sequence so early in the
-		 * bus transition sequences, but cover it.
-		 */
-		if(esp->esp_slowcmd) {
-			esp->esp_scmdleft = esp->current_SC->cmd_len;
-			esp->esp_scmdp = &esp->current_SC->cmnd[0];
-		}
-		esp_restore_pointers(esp, esp->current_SC);
-		return 0;
-
-	case SAVE_POINTERS:
-		esp_save_pointers(esp, esp->current_SC);
-		return 0;
-
-	case COMMAND_COMPLETE:
-	case DISCONNECT:
-		/* Freeing the bus, let it go. */
-		esp->current_SC->SCp.phase = in_freeing;
-		return 0;
-
-	case MESSAGE_REJECT:
-		ESPMISC(("msg reject, "));
-		if(esp->prevmsgout == EXTENDED_MESSAGE) {
-			struct esp_device *esp_dev = esp->current_SC->device->hostdata;
-
-			/* Doesn't look like this target can
-			 * do synchronous or WIDE transfers.
-			 */
-			ESPSDTR(("got reject, was trying nego, clearing sync/WIDE\n"));
-			esp_dev->sync = 1;
-			esp_dev->wide = 1;
-			esp_dev->sync_min_period = 0;
-			esp_dev->sync_max_offset = 0;
-			return 0;
-		} else {
-			ESPMISC(("not sync nego, sending ABORT\n"));
-			return ABORT;
-		}
-	};
-}
-
-/* Target negotiates for synchronous transfers before we do, this
- * is legal although very strange.  What is even funnier is that
- * the SCSI2 standard specifically recommends against targets doing
- * this because so many initiators cannot cope with this occurring.
- */
-static int target_with_ants_in_pants(struct NCR_ESP *esp,
-				     Scsi_Cmnd *SCptr,
-				     struct esp_device *esp_dev)
-{
-	if(esp_dev->sync || SCptr->device->borken) {
-		/* sorry, no can do */
-		ESPSDTR(("forcing to async, "));
-		build_sync_nego_msg(esp, 0, 0);
-		esp_dev->sync = 1;
-		esp->snip = 1;
-		ESPLOG(("esp%d: hoping for msgout\n", esp->esp_id));
-		esp_advance_phase(SCptr, in_the_dark);
-		return EXTENDED_MESSAGE;
-	}
-
-	/* Ok, we'll check them out... */
-	return 0;
-}
-
-static void sync_report(struct NCR_ESP *esp)
-{
-	int msg3, msg4;
-	char *type;
-
-	msg3 = esp->cur_msgin[3];
-	msg4 = esp->cur_msgin[4];
-	if(msg4) {
-		int hz = 1000000000 / (msg3 * 4);
-		int integer = hz / 1000000;
-		int fraction = (hz - (integer * 1000000)) / 10000;
-		if((msg3 * 4) < 200) {
-			type = "FAST";
-		} else {
-			type = "synchronous";
-		}
-
-		/* Do not transform this back into one big printk
-		 * again, it triggers a bug in our sparc64-gcc272
-		 * sibling call optimization.  -DaveM
-		 */
-		ESPLOG((KERN_INFO "esp%d: target %d ",
-			esp->esp_id, esp->current_SC->device->id));
-		ESPLOG(("[period %dns offset %d %d.%02dMHz ",
-			(int) msg3 * 4, (int) msg4,
-			integer, fraction));
-		ESPLOG(("%s SCSI%s]\n", type,
-			(((msg3 * 4) < 200) ? "-II" : "")));
-	} else {
-		ESPLOG((KERN_INFO "esp%d: target %d asynchronous\n",
-			esp->esp_id, esp->current_SC->device->id));
-	}
-}
-
-static int check_multibyte_msg(struct NCR_ESP *esp,
-			       struct ESP_regs *eregs)
-{
-	Scsi_Cmnd *SCptr = esp->current_SC;
-	struct esp_device *esp_dev = SCptr->device->hostdata;
-	unchar regval = 0;
-	int message_out = 0;
-
-	ESPSDTR(("chk multibyte msg: "));
-	if(esp->cur_msgin[2] == EXTENDED_SDTR) {
-		int period = esp->cur_msgin[3];
-		int offset = esp->cur_msgin[4];
-
-		ESPSDTR(("is sync nego response, "));
-		if(!esp->snip) {
-			int rval;
-
-			/* Target negotiates first! */
-			ESPSDTR(("target jumps the gun, "));
-			message_out = EXTENDED_MESSAGE; /* we must respond */
-			rval = target_with_ants_in_pants(esp, SCptr, esp_dev);
-			if(rval)
-				return rval;
-		}
-
-		ESPSDTR(("examining sdtr, "));
-
-		/* Offset cannot be larger than ESP fifo size. */
-		if(offset > 15) {
-			ESPSDTR(("offset too big %2x, ", offset));
-			offset = 15;
-			ESPSDTR(("sending back new offset\n"));
-			build_sync_nego_msg(esp, period, offset);
-			return EXTENDED_MESSAGE;
-		}
-
-		if(offset && period > esp->max_period) {
-			/* Yeee, async for this slow device. */
-			ESPSDTR(("period too long %2x, ", period));
-			build_sync_nego_msg(esp, 0, 0);
-			ESPSDTR(("hoping for msgout\n"));
-			esp_advance_phase(esp->current_SC, in_the_dark);
-			return EXTENDED_MESSAGE;
-		} else if (offset && period < esp->min_period) {
-			ESPSDTR(("period too short %2x, ", period));
-			period = esp->min_period;
-			if(esp->erev > esp236)
-				regval = 4;
-			else
-				regval = 5;
-		} else if(offset) {
-			int tmp;
-
-			ESPSDTR(("period is ok, "));
-			tmp = esp->ccycle / 1000;
-			regval = (((period << 2) + tmp - 1) / tmp);
-			if(regval && (esp->erev > esp236)) {
-				if(period >= 50)
-					regval--;
-			}
-		}
-
-		if(offset) {
-			unchar bit;
-
-			esp_dev->sync_min_period = (regval & 0x1f);
-			esp_dev->sync_max_offset = (offset | esp->radelay);
-			if(esp->erev > esp236) {
-				if(esp->erev == fas100a)
-					bit = ESP_CONFIG3_FAST;
-				else
-					bit = ESP_CONFIG3_FSCSI;
-				if(period < 50)
-					esp->config3[SCptr->device->id] |= bit;
-				else
-					esp->config3[SCptr->device->id] &= ~bit;
-				esp->prev_cfg3 = esp->config3[SCptr->device->id];
-				esp_write(eregs->esp_cfg3, esp->prev_cfg3);
-			}
-			esp->prev_soff = esp_dev->sync_min_period;
-			esp_write(eregs->esp_soff, esp->prev_soff);
-			esp->prev_stp = esp_dev->sync_max_offset;
-			esp_write(eregs->esp_stp, esp->prev_stp);
-
-			ESPSDTR(("soff=%2x stp=%2x cfg3=%2x\n",
-				esp_dev->sync_max_offset,
-				esp_dev->sync_min_period,
-				esp->config3[scmd_id(SCptr)]));
-
-			esp->snip = 0;
-		} else if(esp_dev->sync_max_offset) {
-			unchar bit;
-
-			/* back to async mode */
-			ESPSDTR(("unaccaptable sync nego, forcing async\n"));
-			esp_dev->sync_max_offset = 0;
-			esp_dev->sync_min_period = 0;
-			esp->prev_soff = 0;
-			esp_write(eregs->esp_soff, 0);
-			esp->prev_stp = 0;
-			esp_write(eregs->esp_stp, 0);
-			if(esp->erev > esp236) {
-				if(esp->erev == fas100a)
-					bit = ESP_CONFIG3_FAST;
-				else
-					bit = ESP_CONFIG3_FSCSI;
-				esp->config3[SCptr->device->id] &= ~bit;
-				esp->prev_cfg3 = esp->config3[SCptr->device->id];
-				esp_write(eregs->esp_cfg3, esp->prev_cfg3);
-			}
-		}
-
-		sync_report(esp);
-
-		ESPSDTR(("chk multibyte msg: sync is known, "));
-		esp_dev->sync = 1;
-
-		if(message_out) {
-			ESPLOG(("esp%d: sending sdtr back, hoping for msgout\n",
-				esp->esp_id));
-			build_sync_nego_msg(esp, period, offset);
-			esp_advance_phase(SCptr, in_the_dark);
-			return EXTENDED_MESSAGE;
-		}
-
-		ESPSDTR(("returning zero\n"));
-		esp_advance_phase(SCptr, in_the_dark); /* ...or else! */
-		return 0;
-	} else if(esp->cur_msgin[2] == EXTENDED_WDTR) {
-		ESPLOG(("esp%d: AIEEE wide msg received\n", esp->esp_id));
-		message_out = MESSAGE_REJECT;
-	} else if(esp->cur_msgin[2] == EXTENDED_MODIFY_DATA_POINTER) {
-		ESPLOG(("esp%d: rejecting modify data ptr msg\n", esp->esp_id));
-		message_out = MESSAGE_REJECT;
-	}
-	esp_advance_phase(SCptr, in_the_dark);
-	return message_out;
-}
-
-static int esp_do_msgindone(struct NCR_ESP *esp, struct ESP_regs *eregs)
-{
-	Scsi_Cmnd *SCptr = esp->current_SC;
-	int message_out = 0, it = 0, rval;
-
-	rval = skipahead1(esp, eregs, SCptr, in_msgin, in_msgindone);
-	if(rval)
-		return rval;
-	if(SCptr->SCp.sent_command != in_status) {
-		if(!(esp->ireg & ESP_INTR_DC)) {
-			if(esp->msgin_len && (esp->sreg & ESP_STAT_PERR)) {
-				message_out = MSG_PARITY_ERROR;
-				esp_cmd(esp, eregs, ESP_CMD_FLUSH);
-			} else if((it = (esp_read(eregs->esp_fflags) & ESP_FF_FBYTES))!=1) {
-				/* We certainly dropped the ball somewhere. */
-				message_out = INITIATOR_ERROR;
-				esp_cmd(esp, eregs, ESP_CMD_FLUSH);
-			} else if(!esp->msgin_len) {
-				it = esp_read(eregs->esp_fdata);
-				esp_advance_phase(SCptr, in_msgincont);
-			} else {
-				/* it is ok and we want it */
-				it = esp->cur_msgin[esp->msgin_ctr] =
-					esp_read(eregs->esp_fdata);
-				esp->msgin_ctr++;
-			}
-		} else {
-			esp_advance_phase(SCptr, in_the_dark);
-			return do_work_bus;
-		}
-	} else {
-		it = esp->cur_msgin[0];
-	}
-	if(!message_out && esp->msgin_len) {
-		if(esp->msgin_ctr < esp->msgin_len) {
-			esp_advance_phase(SCptr, in_msgincont);
-		} else if(esp->msgin_len == 1) {
-			message_out = check_singlebyte_msg(esp, eregs);
-		} else if(esp->msgin_len == 2) {
-			if(esp->cur_msgin[0] == EXTENDED_MESSAGE) {
-				if((it+2) >= 15) {
-					message_out = MESSAGE_REJECT;
-				} else {
-					esp->msgin_len = (it + 2);
-					esp_advance_phase(SCptr, in_msgincont);
-				}
-			} else {
-				message_out = MESSAGE_REJECT; /* foo on you */
-			}
-		} else {
-			message_out = check_multibyte_msg(esp, eregs);
-		}
-	}
-	if(message_out < 0) {
-		return -message_out;
-	} else if(message_out) {
-		if(((message_out != 1) &&
-		    ((message_out < 0x20) || (message_out & 0x80))))
-			esp->msgout_len = 1;
-		esp->cur_msgout[0] = message_out;
-		esp_cmd(esp, eregs, ESP_CMD_SATN);
-		esp_advance_phase(SCptr, in_the_dark);
-		esp->msgin_len = 0;
-	}
-	esp->sreg = esp_read(eregs->esp_status);
-	esp->sreg &= ~(ESP_STAT_INTR);
-	if((esp->sreg & (ESP_STAT_PMSG|ESP_STAT_PCD)) == (ESP_STAT_PMSG|ESP_STAT_PCD))
-		esp_cmd(esp, eregs, ESP_CMD_MOK);
-	if((SCptr->SCp.sent_command == in_msgindone) &&
-	    (SCptr->SCp.phase == in_freeing))
-		return esp_do_freebus(esp, eregs);
-	return do_intr_end;
-}
-
-static int esp_do_cmdbegin(struct NCR_ESP *esp, struct ESP_regs *eregs)
-{
-	unsigned char tmp;
-	Scsi_Cmnd *SCptr = esp->current_SC;
-
-	esp_advance_phase(SCptr, in_cmdend);
-	esp_cmd(esp, eregs, ESP_CMD_FLUSH);
-	tmp = *esp->esp_scmdp++;
-	esp->esp_scmdleft--;
-	esp_write(eregs->esp_fdata, tmp);
-	esp_cmd(esp, eregs, ESP_CMD_TI);
-	return do_intr_end;
-}
-
-static int esp_do_cmddone(struct NCR_ESP *esp, struct ESP_regs *eregs)
-{
-	esp_cmd(esp, eregs, ESP_CMD_NULL);
-	if(esp->ireg & ESP_INTR_BSERV) {
-		esp_advance_phase(esp->current_SC, in_the_dark);
-		return esp_do_phase_determine(esp, eregs);
-	}
-	ESPLOG(("esp%d: in do_cmddone() but didn't get BSERV interrupt.\n",
-		esp->esp_id));
-	return do_reset_bus;
-}
-
-static int esp_do_msgout(struct NCR_ESP *esp, struct ESP_regs *eregs)
-{
-	esp_cmd(esp, eregs, ESP_CMD_FLUSH);
-	switch(esp->msgout_len) {
-	case 1:
-		esp_write(eregs->esp_fdata, esp->cur_msgout[0]);
-		esp_cmd(esp, eregs, ESP_CMD_TI);
-		break;
-
-	case 2:
-		if(esp->do_pio_cmds){
-			esp_write(eregs->esp_fdata, esp->cur_msgout[0]);
-			esp_write(eregs->esp_fdata, esp->cur_msgout[1]);
-			esp_cmd(esp, eregs, ESP_CMD_TI);
-		} else {
-			esp->esp_command[0] = esp->cur_msgout[0];
-			esp->esp_command[1] = esp->cur_msgout[1];
-			esp->dma_setup(esp, esp->esp_command_dvma, 2, 0);
-			esp_setcount(eregs, 2);
-			esp_cmd(esp, eregs, ESP_CMD_DMA | ESP_CMD_TI);
-		}
-		break;
-
-	case 4:
-		esp->snip = 1;
-		if(esp->do_pio_cmds){
-			esp_write(eregs->esp_fdata, esp->cur_msgout[0]);
-			esp_write(eregs->esp_fdata, esp->cur_msgout[1]);
-			esp_write(eregs->esp_fdata, esp->cur_msgout[2]);
-			esp_write(eregs->esp_fdata, esp->cur_msgout[3]);
-			esp_cmd(esp, eregs, ESP_CMD_TI);
-		} else {
-			esp->esp_command[0] = esp->cur_msgout[0];
-			esp->esp_command[1] = esp->cur_msgout[1];
-			esp->esp_command[2] = esp->cur_msgout[2];
-			esp->esp_command[3] = esp->cur_msgout[3];
-			esp->dma_setup(esp, esp->esp_command_dvma, 4, 0);
-			esp_setcount(eregs, 4);
-			esp_cmd(esp, eregs, ESP_CMD_DMA | ESP_CMD_TI);
-		}
-		break;
-
-	case 5:
-		esp->snip = 1;
-		if(esp->do_pio_cmds){
-			esp_write(eregs->esp_fdata, esp->cur_msgout[0]);
-			esp_write(eregs->esp_fdata, esp->cur_msgout[1]);
-			esp_write(eregs->esp_fdata, esp->cur_msgout[2]);
-			esp_write(eregs->esp_fdata, esp->cur_msgout[3]);
-			esp_write(eregs->esp_fdata, esp->cur_msgout[4]);
-			esp_cmd(esp, eregs, ESP_CMD_TI);
-		} else {
-			esp->esp_command[0] = esp->cur_msgout[0];
-			esp->esp_command[1] = esp->cur_msgout[1];
-			esp->esp_command[2] = esp->cur_msgout[2];
-			esp->esp_command[3] = esp->cur_msgout[3];
-			esp->esp_command[4] = esp->cur_msgout[4];
-			esp->dma_setup(esp, esp->esp_command_dvma, 5, 0);
-			esp_setcount(eregs, 5);
-			esp_cmd(esp, eregs, ESP_CMD_DMA | ESP_CMD_TI);
-		}
-		break;
-
-	default:
-		/* whoops */
-		ESPMISC(("bogus msgout sending NOP\n"));
-		esp->cur_msgout[0] = NOP;
-		esp_write(eregs->esp_fdata, esp->cur_msgout[0]);
-		esp->msgout_len = 1;
-		esp_cmd(esp, eregs, ESP_CMD_TI);
-		break;
-	}
-	esp_advance_phase(esp->current_SC, in_msgoutdone);
-	return do_intr_end;
-}
-
-static int esp_do_msgoutdone(struct NCR_ESP *esp, 
-			     struct ESP_regs *eregs)
-{
-	if((esp->msgout_len > 1) && esp->dma_barrier)
-		esp->dma_barrier(esp);
-
-	if(!(esp->ireg & ESP_INTR_DC)) {
-		esp_cmd(esp, eregs, ESP_CMD_NULL);
-		switch(esp->sreg & ESP_STAT_PMASK) {
-		case ESP_MOP:
-			/* whoops, parity error */
-			ESPLOG(("esp%d: still in msgout, parity error assumed\n",
-				esp->esp_id));
-			if(esp->msgout_len > 1)
-				esp_cmd(esp, eregs, ESP_CMD_SATN);
-			esp_advance_phase(esp->current_SC, in_msgout);
-			return do_work_bus;
-
-		case ESP_DIP:
-			break;
-
-		default:
-			if(!fcount(esp, eregs) &&
-			   !(((struct esp_device *)esp->current_SC->device->hostdata)->sync_max_offset))
-				esp_cmd(esp, eregs, ESP_CMD_FLUSH);
-			break;
-
-		};
-	}
-
-	/* If we sent out a synchronous negotiation message, update
-	 * our state.
-	 */
-	if(esp->cur_msgout[2] == EXTENDED_MESSAGE &&
-	   esp->cur_msgout[4] == EXTENDED_SDTR) {
-		esp->snip = 1; /* anal retentiveness... */
-	}
-
-	esp->prevmsgout = esp->cur_msgout[0];
-	esp->msgout_len = 0;
-	esp_advance_phase(esp->current_SC, in_the_dark);
-	return esp_do_phase_determine(esp, eregs);
-}
-
-static int esp_bus_unexpected(struct NCR_ESP *esp, struct ESP_regs *eregs)
-{
-	ESPLOG(("esp%d: command in weird state %2x\n",
-		esp->esp_id, esp->current_SC->SCp.phase));
-	return do_reset_bus;
-}
-
-static espfunc_t bus_vector[] = {
-	esp_do_data_finale,
-	esp_do_data_finale,
-	esp_bus_unexpected,
-	esp_do_msgin,
-	esp_do_msgincont,
-	esp_do_msgindone,
-	esp_do_msgout,
-	esp_do_msgoutdone,
-	esp_do_cmdbegin,
-	esp_do_cmddone,
-	esp_do_status,
-	esp_do_freebus,
-	esp_do_phase_determine,
-	esp_bus_unexpected,
-	esp_bus_unexpected,
-	esp_bus_unexpected,
-};
-
-/* This is the second tier in our dual-level SCSI state machine. */
-static int esp_work_bus(struct NCR_ESP *esp, struct ESP_regs *eregs)
-{
-	Scsi_Cmnd *SCptr = esp->current_SC;
-	unsigned int phase;
-
-	ESPBUS(("esp_work_bus: "));
-	if(!SCptr) {
-		ESPBUS(("reconnect\n"));
-		return esp_do_reconnect(esp, eregs);
-	}
-	phase = SCptr->SCp.phase;
-	if ((phase & 0xf0) == in_phases_mask)
-		return bus_vector[(phase & 0x0f)](esp, eregs);
-	else if((phase & 0xf0) == in_slct_mask)
-		return esp_select_complete(esp, eregs);
-	else
-		return esp_bus_unexpected(esp, eregs);
-}
-
-static espfunc_t isvc_vector[] = {
-	NULL,
-	esp_do_phase_determine,
-	esp_do_resetbus,
-	esp_finish_reset,
-	esp_work_bus
-};
-
-/* Main interrupt handler for an esp adapter. */
-void esp_handle(struct NCR_ESP *esp)
-{
-	struct ESP_regs *eregs;
-	Scsi_Cmnd *SCptr;
-	int what_next = do_intr_end;
-	eregs = esp->eregs;
-	SCptr = esp->current_SC;
-
-	if(esp->dma_irq_entry)
-		esp->dma_irq_entry(esp);
-
-	/* Check for errors. */
-	esp->sreg = esp_read(eregs->esp_status);
-	esp->sreg &= (~ESP_STAT_INTR);
-	esp->seqreg = (esp_read(eregs->esp_sstep) & ESP_STEP_VBITS);
-	esp->ireg = esp_read(eregs->esp_intrpt);   /* Unlatch intr and stat regs */
-	ESPIRQ(("handle_irq: [sreg<%02x> sstep<%02x> ireg<%02x>]\n",
-		esp->sreg, esp->seqreg, esp->ireg));
-	if(esp->sreg & (ESP_STAT_SPAM)) {
-		/* Gross error, could be due to one of:
-		 *
-		 * - top of fifo overwritten, could be because
-		 *   we tried to do a synchronous transfer with
-		 *   an offset greater than ESP fifo size
-		 *
-		 * - top of command register overwritten
-		 *
-		 * - DMA setup to go in one direction, SCSI
-		 *   bus points in the other, whoops
-		 *
-		 * - weird phase change during asynchronous
-		 *   data phase while we are initiator
-		 */
-		ESPLOG(("esp%d: Gross error sreg=%2x\n", esp->esp_id, esp->sreg));
-
-		/* If a command is live on the bus we cannot safely
-		 * reset the bus, so we'll just let the pieces fall
-		 * where they may.  Here we are hoping that the
-		 * target will be able to cleanly go away soon
-		 * so we can safely reset things.
-		 */
-		if(!SCptr) {
-			ESPLOG(("esp%d: No current cmd during gross error, "
-				"resetting bus\n", esp->esp_id));
-			what_next = do_reset_bus;
-			goto state_machine;
-		}
-	}
-
-	/* No current cmd is only valid at this point when there are
-	 * commands off the bus or we are trying a reset.
-	 */
-	if(!SCptr && !esp->disconnected_SC && !(esp->ireg & ESP_INTR_SR)) {
-		/* Panic is safe, since current_SC is null. */
-		ESPLOG(("esp%d: no command in esp_handle()\n", esp->esp_id));
-		panic("esp_handle: current_SC == penguin within interrupt!");
-	}
-
-	if(esp->ireg & (ESP_INTR_IC)) {
-		/* Illegal command fed to ESP.  Outside of obvious
-		 * software bugs that could cause this, there is
-		 * a condition with ESP100 where we can confuse the
-		 * ESP into an erroneous illegal command interrupt
-		 * because it does not scrape the FIFO properly
-		 * for reselection.  See esp100_reconnect_hwbug()
-		 * to see how we try very hard to avoid this.
-		 */
-		ESPLOG(("esp%d: invalid command\n", esp->esp_id));
-
-		esp_dump_state(esp, eregs);
-
-		if(SCptr) {
-			/* Devices with very buggy firmware can drop BSY
-			 * during a scatter list interrupt when using sync
-			 * mode transfers.  We continue the transfer as
-			 * expected, the target drops the bus, the ESP
-			 * gets confused, and we get a illegal command
-			 * interrupt because the bus is in the disconnected
-			 * state now and ESP_CMD_TI is only allowed when
-			 * a nexus is alive on the bus.
-			 */
-			ESPLOG(("esp%d: Forcing async and disabling disconnect for "
-				"target %d\n", esp->esp_id, SCptr->device->id));
-			SCptr->device->borken = 1; /* foo on you */
-		}
-
-		what_next = do_reset_bus;
-	} else if(!(esp->ireg & ~(ESP_INTR_FDONE | ESP_INTR_BSERV | ESP_INTR_DC))) {
-		int phase;
-
-		if(SCptr) {
-			phase = SCptr->SCp.phase;
-			if(phase & in_phases_mask) {
-				what_next = esp_work_bus(esp, eregs);
-			} else if(phase & in_slct_mask) {
-				what_next = esp_select_complete(esp, eregs);
-			} else {
-				ESPLOG(("esp%d: interrupt for no good reason...\n",
-					esp->esp_id));
-				what_next = do_intr_end;
-			}
-		} else {
-			ESPLOG(("esp%d: BSERV or FDONE or DC while SCptr==NULL\n",
-				esp->esp_id));
-			what_next = do_reset_bus;
-		}
-	} else if(esp->ireg & ESP_INTR_SR) {
-		ESPLOG(("esp%d: SCSI bus reset interrupt\n", esp->esp_id));
-		what_next = do_reset_complete;
-	} else if(esp->ireg & (ESP_INTR_S | ESP_INTR_SATN)) {
-		ESPLOG(("esp%d: AIEEE we have been selected by another initiator!\n",
-			esp->esp_id));
-		what_next = do_reset_bus;
-	} else if(esp->ireg & ESP_INTR_RSEL) {
-		if(!SCptr) {
-			/* This is ok. */
-			what_next = esp_do_reconnect(esp, eregs);
-		} else if(SCptr->SCp.phase & in_slct_mask) {
-			/* Only selection code knows how to clean
-			 * up properly.
-			 */
-			ESPDISC(("Reselected during selection attempt\n"));
-			what_next = esp_select_complete(esp, eregs);
-		} else {
-			ESPLOG(("esp%d: Reselected while bus is busy\n",
-				esp->esp_id));
-			what_next = do_reset_bus;
-		}
-	}
-
-	/* This is tier-one in our dual level SCSI state machine. */
-state_machine:
-	while(what_next != do_intr_end) {
-		if (what_next >= do_phase_determine &&
-		    what_next < do_intr_end)
-			what_next = isvc_vector[what_next](esp, eregs);
-		else {
-			/* state is completely lost ;-( */
-			ESPLOG(("esp%d: interrupt engine loses state, resetting bus\n",
-				esp->esp_id));
-			what_next = do_reset_bus;
-		}
-	}
-	if(esp->dma_irq_exit)
-		esp->dma_irq_exit(esp);
-}
-EXPORT_SYMBOL(esp_handle);
-
-#ifndef CONFIG_SMP
-irqreturn_t esp_intr(int irq, void *dev_id)
-{
-	struct NCR_ESP *esp;
-	unsigned long flags;
-	int again;
-	struct Scsi_Host *dev = dev_id;
-
-	/* Handle all ESP interrupts showing at this IRQ level. */
-	spin_lock_irqsave(dev->host_lock, flags);
-repeat:
-	again = 0;
-	for_each_esp(esp) {
-#ifndef __mips__	    
-		if(((esp)->irq & 0xff) == irq) {
-#endif		    
-			if(esp->dma_irq_p(esp)) {
-				again = 1;
-
-				esp->dma_ints_off(esp);
-
-				ESPIRQ(("I%d(", esp->esp_id));
-				esp_handle(esp);
-				ESPIRQ((")"));
-
-				esp->dma_ints_on(esp);
-			}
-#ifndef __mips__		    
-		}
-#endif	    
-	}
-	if(again)
-		goto repeat;
-	spin_unlock_irqrestore(dev->host_lock, flags);
-	return IRQ_HANDLED;
-}
-#else
-/* For SMP we only service one ESP on the list list at our IRQ level! */
-irqreturn_t esp_intr(int irq, void *dev_id)
-{
-	struct NCR_ESP *esp;
-	unsigned long flags;
-	struct Scsi_Host *dev = dev_id;
-	
-	/* Handle all ESP interrupts showing at this IRQ level. */
-	spin_lock_irqsave(dev->host_lock, flags);
-	for_each_esp(esp) {
-		if(((esp)->irq & 0xf) == irq) {
-			if(esp->dma_irq_p(esp)) {
-				esp->dma_ints_off(esp);
-
-				ESPIRQ(("I[%d:%d](",
-					smp_processor_id(), esp->esp_id));
-				esp_handle(esp);
-				ESPIRQ((")"));
-
-				esp->dma_ints_on(esp);
-				goto out;
-			}
-		}
-	}
-out:
-	spin_unlock_irqrestore(dev->host_lock, flags);
-	return IRQ_HANDLED;
-}
-#endif
-
-int esp_slave_alloc(struct scsi_device *SDptr)
-{
-	struct esp_device *esp_dev =
-		kzalloc(sizeof(struct esp_device), GFP_ATOMIC);
-
-	if (!esp_dev)
-		return -ENOMEM;
-	SDptr->hostdata = esp_dev;
-	return 0;
-}
-
-void esp_slave_destroy(struct scsi_device *SDptr)
-{
-	struct NCR_ESP *esp = (struct NCR_ESP *) SDptr->host->hostdata;
-
-	esp->targets_present &= ~(1 << sdev_id(SDptr));
-	kfree(SDptr->hostdata);
-	SDptr->hostdata = NULL;
-}
-
-#ifdef MODULE
-int init_module(void) { return 0; }
-void cleanup_module(void) {}
-void esp_release(void)
-{
-	esps_in_use--;
-	esps_running = esps_in_use;
-}
-EXPORT_SYMBOL(esp_release);
-#endif
-
-EXPORT_SYMBOL(esp_abort);
-EXPORT_SYMBOL(esp_allocate);
-EXPORT_SYMBOL(esp_deallocate);
-EXPORT_SYMBOL(esp_initialize);
-EXPORT_SYMBOL(esp_intr);
-EXPORT_SYMBOL(esp_queue);
-EXPORT_SYMBOL(esp_reset);
-EXPORT_SYMBOL(esp_slave_alloc);
-EXPORT_SYMBOL(esp_slave_destroy);
-EXPORT_SYMBOL(esps_in_use);
-
-MODULE_LICENSE("GPL");
diff --git a/drivers/scsi/NCR53C9x.h b/drivers/scsi/NCR53C9x.h
deleted file mode 100644
index 00a0ba040dba..000000000000
--- a/drivers/scsi/NCR53C9x.h
+++ /dev/null
@@ -1,668 +0,0 @@
-/* NCR53C9x.c:  Defines and structures for the NCR53C9x generic driver.
- *
- * Originally esp.h:  Defines and structures for the Sparc ESP 
- *                   (Enhanced SCSI Processor) driver under Linux.
- *
- * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
- *
- * Generalization by Jesper Skov (jskov@cygnus.co.uk)
- *
- * More generalization (for i386 stuff) by Tymm Twillman (tymm@computer.org)
- */
-
-#ifndef NCR53C9X_H
-#define NCR53C9X_H
-
-#include <linux/interrupt.h>
-
-/* djweis for mac driver */
-#if defined(CONFIG_MAC)
-#define PAD_SIZE 15
-#else
-#define PAD_SIZE 3
-#endif
-
-/* Handle multiple hostadapters on Amiga
- * generally PAD_SIZE = 3
- * but there is one exception: Oktagon (PAD_SIZE = 1) */
-#if defined(CONFIG_OKTAGON_SCSI) || defined(CONFIG_OKTAGON_SCSI_MODULE)
-#undef PAD_SIZE
-#if defined(CONFIG_BLZ1230_SCSI) || defined(CONFIG_BLZ1230_SCSI_MODULE) || \
-    defined(CONFIG_BLZ2060_SCSI) || defined(CONFIG_BLZ2060_SCSI_MODULE) || \
-    defined(CONFIG_CYBERSTORM_SCSI) || defined(CONFIG_CYBERSTORM_SCSI_MODULE) || \
-    defined(CONFIG_CYBERSTORMII_SCSI) || defined(CONFIG_CYBERSTORMII_SCSI_MODULE) || \
-    defined(CONFIG_FASTLANE_SCSI) || defined(CONFIG_FASTLANE_SCSI_MODULE)
-#define MULTIPLE_PAD_SIZES
-#else
-#define PAD_SIZE 1
-#endif
-#endif
-
-/* Macros for debugging messages */
-
-#define DEBUG_ESP
-/* #define DEBUG_ESP_DATA */
-/* #define DEBUG_ESP_QUEUE */
-/* #define DEBUG_ESP_DISCONNECT */
-/* #define DEBUG_ESP_STATUS */
-/* #define DEBUG_ESP_PHASES */
-/* #define DEBUG_ESP_WORKBUS */
-/* #define DEBUG_STATE_MACHINE */
-/* #define DEBUG_ESP_CMDS */
-/* #define DEBUG_ESP_IRQS */
-/* #define DEBUG_SDTR */
-/* #define DEBUG_ESP_SG */
-
-/* Use the following to sprinkle debugging messages in a way which
- * suits you if combinations of the above become too verbose when
- * trying to track down a specific problem.
- */
-/* #define DEBUG_ESP_MISC */
-
-#if defined(DEBUG_ESP)
-#define ESPLOG(foo)  printk foo
-#else
-#define ESPLOG(foo)
-#endif /* (DEBUG_ESP) */
-
-#if defined(DEBUG_ESP_DATA)
-#define ESPDATA(foo)  printk foo
-#else
-#define ESPDATA(foo)
-#endif
-
-#if defined(DEBUG_ESP_QUEUE)
-#define ESPQUEUE(foo)  printk foo
-#else
-#define ESPQUEUE(foo)
-#endif
-
-#if defined(DEBUG_ESP_DISCONNECT)
-#define ESPDISC(foo)  printk foo
-#else
-#define ESPDISC(foo)
-#endif
-
-#if defined(DEBUG_ESP_STATUS)
-#define ESPSTAT(foo)  printk foo
-#else
-#define ESPSTAT(foo)
-#endif
-
-#if defined(DEBUG_ESP_PHASES)
-#define ESPPHASE(foo)  printk foo
-#else
-#define ESPPHASE(foo)
-#endif
-
-#if defined(DEBUG_ESP_WORKBUS)
-#define ESPBUS(foo)  printk foo
-#else
-#define ESPBUS(foo)
-#endif
-
-#if defined(DEBUG_ESP_IRQS)
-#define ESPIRQ(foo)  printk foo
-#else
-#define ESPIRQ(foo)
-#endif
-
-#if defined(DEBUG_SDTR)
-#define ESPSDTR(foo)  printk foo
-#else
-#define ESPSDTR(foo)
-#endif
-
-#if defined(DEBUG_ESP_MISC)
-#define ESPMISC(foo)  printk foo
-#else
-#define ESPMISC(foo)
-#endif
-
-/*
- * padding for register structure
- */
-#ifdef CONFIG_JAZZ_ESP
-#define EREGS_PAD(n)
-#else
-#ifndef MULTIPLE_PAD_SIZES
-#define EREGS_PAD(n)    unchar n[PAD_SIZE];
-#endif
-#endif
-
-/* The ESP SCSI controllers have their register sets in three
- * "classes":
- *
- * 1) Registers which are both read and write.
- * 2) Registers which are read only.
- * 3) Registers which are write only.
- *
- * Yet, they all live within the same IO space.
- */
-
-#if !defined(__i386__) && !defined(__x86_64__)
-
-#ifndef MULTIPLE_PAD_SIZES
-
-#ifdef CONFIG_CPU_HAS_WB
-#include <asm/wbflush.h>
-#define esp_write(__reg, __val) do{(__reg) = (__val); wbflush();} while(0)
-#else
-#define esp_write(__reg, __val) ((__reg) = (__val))
-#endif
-#define esp_read(__reg) (__reg)
-
-struct ESP_regs {
-                                /* Access    Description              Offset */
-    volatile unchar esp_tclow;  /* rw  Low bits of the transfer count 0x00   */
-                                EREGS_PAD(tlpad1);
-    volatile unchar esp_tcmed;  /* rw  Mid bits of the transfer count 0x04   */
-                                EREGS_PAD(fdpad);
-    volatile unchar esp_fdata;  /* rw  FIFO data bits                 0x08   */
-                                EREGS_PAD(cbpad);
-    volatile unchar esp_cmnd;   /* rw  SCSI command bits              0x0c   */
-                                EREGS_PAD(stpad);
-    volatile unchar esp_status; /* ro  ESP status register            0x10   */
-#define esp_busid   esp_status  /* wo  Bus ID for select/reselect     0x10   */
-                                EREGS_PAD(irqpd);
-    volatile unchar esp_intrpt; /* ro  Kind of interrupt              0x14   */
-#define esp_timeo   esp_intrpt  /* wo  Timeout value for select/resel 0x14   */
-                                EREGS_PAD(sspad);
-    volatile unchar esp_sstep;  /* ro  Sequence step register         0x18   */
-#define esp_stp     esp_sstep   /* wo  Transfer period per sync       0x18   */
-                                EREGS_PAD(ffpad);
-    volatile unchar esp_fflags; /* ro  Bits of current FIFO info      0x1c   */
-#define esp_soff    esp_fflags  /* wo  Sync offset                    0x1c   */
-                                EREGS_PAD(cf1pd);
-    volatile unchar esp_cfg1;   /* rw  First configuration register   0x20   */
-                                EREGS_PAD(cfpad);
-    volatile unchar esp_cfact;  /* wo  Clock conversion factor        0x24   */
-                                EREGS_PAD(ctpad);
-    volatile unchar esp_ctest;  /* wo  Chip test register             0x28   */
-                                EREGS_PAD(cf2pd);
-    volatile unchar esp_cfg2;   /* rw  Second configuration register  0x2c   */
-                                EREGS_PAD(cf3pd);
-
-    /* The following is only found on the 53C9X series SCSI chips */
-    volatile unchar esp_cfg3;   /* rw  Third configuration register   0x30  */
-                                EREGS_PAD(cf4pd);
-    volatile unchar esp_cfg4;   /* rw  Fourth configuration register  0x34  */
-                                EREGS_PAD(thpd);
-    /* The following is found on all chips except the NCR53C90 (ESP100) */
-    volatile unchar esp_tchi;   /* rw  High bits of transfer count    0x38  */
-#define esp_uid     esp_tchi    /* ro  Unique ID code                 0x38  */
-                                EREGS_PAD(fgpad);    
-    volatile unchar esp_fgrnd;  /* rw  Data base for fifo             0x3c  */
-};
-
-#else /* MULTIPLE_PAD_SIZES */
-
-#define esp_write(__reg, __val) (*(__reg) = (__val))
-#define esp_read(__reg) (*(__reg))
-
-struct ESP_regs {
-    unsigned char io_addr[64]; /* dummy */
-                                                 /* Access    Description              Offset */
-#define esp_tclow   io_addr                      /* rw  Low bits of the transfer count 0x00   */
-#define esp_tcmed   io_addr + (1<<(esp->shift))  /* rw  Mid bits of the transfer count 0x04   */
-#define esp_fdata   io_addr + (2<<(esp->shift))  /* rw  FIFO data bits                 0x08   */
-#define esp_cmnd    io_addr + (3<<(esp->shift))  /* rw  SCSI command bits              0x0c   */
-#define esp_status  io_addr + (4<<(esp->shift))  /* ro  ESP status register            0x10   */
-#define esp_busid   esp_status                   /* wo  Bus ID for select/reselect     0x10   */
-#define esp_intrpt  io_addr + (5<<(esp->shift))  /* ro  Kind of interrupt              0x14   */
-#define esp_timeo   esp_intrpt                   /* wo  Timeout value for select/resel 0x14   */
-#define esp_sstep   io_addr + (6<<(esp->shift))  /* ro  Sequence step register         0x18   */
-#define esp_stp     esp_sstep                    /* wo  Transfer period per sync       0x18   */
-#define esp_fflags  io_addr + (7<<(esp->shift))  /* ro  Bits of current FIFO info      0x1c   */
-#define esp_soff    esp_fflags                   /* wo  Sync offset                    0x1c   */
-#define esp_cfg1    io_addr + (8<<(esp->shift))  /* rw  First configuration register   0x20   */
-#define esp_cfact   io_addr + (9<<(esp->shift))  /* wo  Clock conversion factor        0x24   */
-#define esp_ctest   io_addr + (10<<(esp->shift)) /* wo  Chip test register             0x28   */
-#define esp_cfg2    io_addr + (11<<(esp->shift)) /* rw  Second configuration register  0x2c   */
-
-    /* The following is only found on the 53C9X series SCSI chips */
-#define esp_cfg3    io_addr + (12<<(esp->shift)) /* rw  Third configuration register   0x30  */
-#define esp_cfg4    io_addr + (13<<(esp->shift)) /* rw  Fourth configuration register  0x34  */
-
-    /* The following is found on all chips except the NCR53C90 (ESP100) */
-#define esp_tchi    io_addr + (14<<(esp->shift)) /* rw  High bits of transfer count    0x38  */
-#define esp_uid     esp_tchi                     /* ro  Unique ID code                 0x38  */
-#define esp_fgrnd   io_addr + (15<<(esp->shift)) /* rw  Data base for fifo             0x3c  */
-};
-
-#endif
-
-#else /* !defined(__i386__) && !defined(__x86_64__) */
-
-#define esp_write(__reg, __val) outb((__val), (__reg))
-#define esp_read(__reg) inb((__reg))
-
-struct ESP_regs {
-    unsigned int io_addr;
-                                 /* Access    Description              Offset */
-#define esp_tclow   io_addr      /* rw  Low bits of the transfer count 0x00   */
-#define esp_tcmed   io_addr + 1  /* rw  Mid bits of the transfer count 0x04   */
-#define esp_fdata   io_addr + 2  /* rw  FIFO data bits                 0x08   */
-#define esp_cmnd    io_addr + 3  /* rw  SCSI command bits              0x0c   */
-#define esp_status  io_addr + 4  /* ro  ESP status register            0x10   */
-#define esp_busid   esp_status   /* wo  Bus ID for select/reselect     0x10   */
-#define esp_intrpt  io_addr + 5  /* ro  Kind of interrupt              0x14   */
-#define esp_timeo   esp_intrpt   /* wo  Timeout value for select/resel 0x14   */
-#define esp_sstep   io_addr + 6  /* ro  Sequence step register         0x18   */
-#define esp_stp     esp_sstep    /* wo  Transfer period per sync       0x18   */
-#define esp_fflags  io_addr + 7  /* ro  Bits of current FIFO info      0x1c   */
-#define esp_soff    esp_fflags   /* wo  Sync offset                    0x1c   */
-#define esp_cfg1    io_addr + 8  /* rw  First configuration register   0x20   */
-#define esp_cfact   io_addr + 9  /* wo  Clock conversion factor        0x24   */
-#define esp_ctest   io_addr + 10 /* wo  Chip test register             0x28   */
-#define esp_cfg2    io_addr + 11 /* rw  Second configuration register  0x2c   */
-
-    /* The following is only found on the 53C9X series SCSI chips */
-#define esp_cfg3    io_addr + 12 /* rw  Third configuration register   0x30  */
-#define esp_cfg4    io_addr + 13 /* rw  Fourth configuration register  0x34  */
-
-    /* The following is found on all chips except the NCR53C90 (ESP100) */
-#define esp_tchi    io_addr + 14 /* rw  High bits of transfer count    0x38  */
-#define esp_uid     esp_tchi     /* ro  Unique ID code                 0x38  */
-#define esp_fgrnd   io_addr + 15 /* rw  Data base for fifo             0x3c  */
-};
-
-#endif /* !defined(__i386__) && !defined(__x86_64__) */
-
-/* Various revisions of the ESP board. */
-enum esp_rev {
-  esp100     = 0x00,  /* NCR53C90 - very broken */
-  esp100a    = 0x01,  /* NCR53C90A */
-  esp236     = 0x02,
-  fas236     = 0x03,
-  fas100a    = 0x04,
-  fast       = 0x05,
-  fas366     = 0x06,
-  fas216     = 0x07,
-  fsc        = 0x08,  /* SYM53C94-2 */
-  espunknown = 0x09
-};
-
-/* We allocate one of these for each scsi device and attach it to
- * SDptr->hostdata for use in the driver
- */
-struct esp_device {
-  unsigned char sync_min_period;
-  unsigned char sync_max_offset;
-  unsigned sync:1;
-  unsigned wide:1;
-  unsigned disconnect:1;
-};
-
-/* We get one of these for each ESP probed. */
-struct NCR_ESP {
-  struct NCR_ESP *next;                   /* Next ESP on probed or NULL */
-  struct ESP_regs *eregs;	          /* All esp registers */
-  int dma;                                /* Who I do transfers with. */
-  void *dregs;		  		  /* And his registers. */
-  struct Scsi_Host *ehost;                /* Backpointer to SCSI Host */
-
-  void *edev;        		          /* Pointer to controller base/SBus */
-  int esp_id;                             /* Unique per-ESP ID number */
-
-  /* ESP Configuration Registers */
-  unsigned char config1;                  /* Copy of the 1st config register */
-  unsigned char config2;                  /* Copy of the 2nd config register */
-  unsigned char config3[16];              /* Copy of the 3rd config register */
-
-  /* The current command we are sending to the ESP chip.  This esp_command
-   * ptr needs to be mapped in DVMA area so we can send commands and read
-   * from the ESP fifo without burning precious CPU cycles.  Programmed I/O
-   * sucks when we have the DVMA to do it for us.  The ESP is stupid and will
-   * only send out 6, 10, and 12 byte SCSI commands, others we need to send
-   * one byte at a time.  esp_slowcmd being set says that we are doing one
-   * of the command types ESP doesn't understand, esp_scmdp keeps track of
-   * which byte we are sending, esp_scmdleft says how many bytes to go.
-   */
-  volatile unchar *esp_command;           /* Location of command (CPU view)  */
-  __u32            esp_command_dvma;      /* Location of command (DVMA view) */
-  unsigned char esp_clen;                 /* Length of this command */
-  unsigned char esp_slowcmd;
-  unsigned char *esp_scmdp;
-  unsigned char esp_scmdleft;
-
-  /* The following are used to determine the cause of an IRQ. Upon every
-   * IRQ entry we synchronize these with the hardware registers.
-   */
-  unchar ireg;                            /* Copy of ESP interrupt register */
-  unchar sreg;                            /* Same for ESP status register */
-  unchar seqreg;                          /* The ESP sequence register */
-
-  /* The following is set when a premature interrupt condition is detected
-   * in some FAS revisions.
-   */
-  unchar fas_premature_intr_workaround;
-
-  /* To save register writes to the ESP, which can be expensive, we
-   * keep track of the previous value that various registers had for
-   * the last target we connected to.  If they are the same for the
-   * current target, we skip the register writes as they are not needed.
-   */
-  unchar prev_soff, prev_stp, prev_cfg3;
-
-  /* For each target we keep track of save/restore data
-   * pointer information.  This needs to be updated majorly
-   * when we add support for tagged queueing.  -DaveM
-   */
-  struct esp_pointers {
-	  char *saved_ptr;
-	  struct scatterlist *saved_buffer;
-	  int saved_this_residual;
-	  int saved_buffers_residual;
-  } data_pointers[16] /*XXX [MAX_TAGS_PER_TARGET]*/;
-
-  /* Clock periods, frequencies, synchronization, etc. */
-  unsigned int cfreq;                    /* Clock frequency in HZ */
-  unsigned int cfact;                    /* Clock conversion factor */
-  unsigned int ccycle;                   /* One ESP clock cycle */
-  unsigned int ctick;                    /* One ESP clock time */
-  unsigned int radelay;                  /* FAST chip req/ack delay */
-  unsigned int neg_defp;                 /* Default negotiation period */
-  unsigned int sync_defp;                /* Default sync transfer period */
-  unsigned int max_period;               /* longest our period can be */
-  unsigned int min_period;               /* shortest period we can withstand */
-  /* For slow to medium speed input clock rates we shoot for 5mb/s,
-   * but for high input clock rates we try to do 10mb/s although I
-   * don't think a transfer can even run that fast with an ESP even
-   * with DMA2 scatter gather pipelining.
-   */
-#define SYNC_DEFP_SLOW            0x32   /* 5mb/s  */
-#define SYNC_DEFP_FAST            0x19   /* 10mb/s */
-
-  unsigned int snip;                      /* Sync. negotiation in progress */
-  unsigned int wnip;                      /* WIDE negotiation in progress */
-  unsigned int targets_present;           /* targets spoken to before */
-
-  int current_transfer_size;              /* Set at beginning of data dma */
-
-  unchar espcmdlog[32];                   /* Log of current esp cmds sent. */
-  unchar espcmdent;                       /* Current entry in esp cmd log. */
-
-  /* Misc. info about this ESP */
-  enum esp_rev erev;                      /* ESP revision */
-  int irq;                                /* IRQ for this ESP */
-  int scsi_id;                            /* Who am I as initiator? */
-  int scsi_id_mask;                       /* Bitmask of 'me'. */
-  int diff;                               /* Differential SCSI bus? */
-  int slot;                               /* Slot the adapter occupies */
-
-  /* Our command queues, only one cmd lives in the current_SC queue. */
-  Scsi_Cmnd *issue_SC;           /* Commands to be issued */
-  Scsi_Cmnd *current_SC;         /* Who is currently working the bus */
-  Scsi_Cmnd *disconnected_SC;    /* Commands disconnected from the bus */
-
-  /* Message goo */
-  unchar cur_msgout[16];
-  unchar cur_msgin[16];
-  unchar prevmsgout, prevmsgin;
-  unchar msgout_len, msgin_len;
-  unchar msgout_ctr, msgin_ctr;
-
-  /* States that we cannot keep in the per cmd structure because they
-   * cannot be assosciated with any specific command.
-   */
-  unchar resetting_bus;
-  wait_queue_head_t reset_queue;
-
-  unchar do_pio_cmds;		/* Do command transfer with pio */
-
-  /* How much bits do we have to shift the registers */
-  unsigned char shift;
-
-  /* Functions handling DMA
-   */ 
-  /* Required functions */
-  int  (*dma_bytes_sent)(struct NCR_ESP *, int);
-  int  (*dma_can_transfer)(struct NCR_ESP *, Scsi_Cmnd *);
-  void (*dma_dump_state)(struct NCR_ESP *);
-  void (*dma_init_read)(struct NCR_ESP *, __u32, int);
-  void (*dma_init_write)(struct NCR_ESP *, __u32, int);
-  void (*dma_ints_off)(struct NCR_ESP *);
-  void (*dma_ints_on)(struct NCR_ESP *);
-  int  (*dma_irq_p)(struct NCR_ESP *);
-  int  (*dma_ports_p)(struct NCR_ESP *);
-  void (*dma_setup)(struct NCR_ESP *, __u32, int, int);
-
-  /* Optional functions (i.e. may be initialized to 0) */
-  void (*dma_barrier)(struct NCR_ESP *);
-  void (*dma_drain)(struct NCR_ESP *);
-  void (*dma_invalidate)(struct NCR_ESP *);
-  void (*dma_irq_entry)(struct NCR_ESP *);
-  void (*dma_irq_exit)(struct NCR_ESP *);
-  void (*dma_led_off)(struct NCR_ESP *);
-  void (*dma_led_on)(struct NCR_ESP *);
-  void (*dma_poll)(struct NCR_ESP *, unsigned char *);
-  void (*dma_reset)(struct NCR_ESP *);
-    
-  /* Optional virtual DMA functions */
-  void (*dma_mmu_get_scsi_one)(struct NCR_ESP *, Scsi_Cmnd *);
-  void (*dma_mmu_get_scsi_sgl)(struct NCR_ESP *, Scsi_Cmnd *);
-  void (*dma_mmu_release_scsi_one)(struct NCR_ESP *, Scsi_Cmnd *);
-  void (*dma_mmu_release_scsi_sgl)(struct NCR_ESP *, Scsi_Cmnd *);
-  void (*dma_advance_sg)(Scsi_Cmnd *);
-};
-
-/* Bitfield meanings for the above registers. */
-
-/* ESP config reg 1, read-write, found on all ESP chips */
-#define ESP_CONFIG1_ID        0x07             /* My BUS ID bits */
-#define ESP_CONFIG1_CHTEST    0x08             /* Enable ESP chip tests */
-#define ESP_CONFIG1_PENABLE   0x10             /* Enable parity checks */
-#define ESP_CONFIG1_PARTEST   0x20             /* Parity test mode enabled? */
-#define ESP_CONFIG1_SRRDISAB  0x40             /* Disable SCSI reset reports */
-#define ESP_CONFIG1_SLCABLE   0x80             /* Enable slow cable mode */
-
-/* ESP config reg 2, read-write, found only on esp100a+esp200+esp236+fsc chips */
-#define ESP_CONFIG2_DMAPARITY 0x01             /* enable DMA Parity (200,236,fsc) */
-#define ESP_CONFIG2_REGPARITY 0x02             /* enable reg Parity (200,236,fsc) */
-#define ESP_CONFIG2_BADPARITY 0x04             /* Bad parity target abort  */
-#define ESP_CONFIG2_SCSI2ENAB 0x08             /* Enable SCSI-2 features (tmode only) */
-#define ESP_CONFIG2_HI        0x10             /* High Impedance DREQ ???  */
-#define ESP_CONFIG2_HMEFENAB  0x10             /* HME features enable */
-#define ESP_CONFIG2_BCM       0x20             /* Enable byte-ctrl (236,fsc)   */
-#define ESP_CONFIG2_FENAB     0x40             /* Enable features (fas100,esp216,fsc)      */
-#define ESP_CONFIG2_SPL       0x40             /* Enable status-phase latch (esp236)   */
-#define ESP_CONFIG2_RFB       0x80             /* Reserve FIFO byte (fsc) */
-#define ESP_CONFIG2_MAGIC     0xe0             /* Invalid bits... */
-
-/* ESP config register 3 read-write, found only esp236+fas236+fas100a+fsc chips */
-#define ESP_CONFIG3_FCLOCK    0x01             /* FAST SCSI clock rate (esp100a/fas366) */
-#define ESP_CONFIG3_TEM       0x01             /* Enable thresh-8 mode (esp/fas236/fsc)  */
-#define ESP_CONFIG3_FAST      0x02             /* Enable FAST SCSI     (esp100a) */
-#define ESP_CONFIG3_ADMA      0x02             /* Enable alternate-dma (esp/fas236/fsc)  */
-#define ESP_CONFIG3_TENB      0x04             /* group2 SCSI2 support (esp100a) */
-#define ESP_CONFIG3_SRB       0x04             /* Save residual byte   (esp/fas236/fsc)  */
-#define ESP_CONFIG3_TMS       0x08             /* Three-byte msg's ok  (esp100a) */
-#define ESP_CONFIG3_FCLK      0x08             /* Fast SCSI clock rate (esp/fas236/fsc)  */
-#define ESP_CONFIG3_IDMSG     0x10             /* ID message checking  (esp100a) */
-#define ESP_CONFIG3_FSCSI     0x10             /* Enable FAST SCSI     (esp/fas236/fsc)  */
-#define ESP_CONFIG3_GTM       0x20             /* group2 SCSI2 support (esp/fas236/fsc)  */
-#define ESP_CONFIG3_TBMS      0x40             /* Three-byte msg's ok  (esp/fas236/fsc)  */
-#define ESP_CONFIG3_IMS       0x80             /* ID msg chk'ng        (esp/fas236/fsc)  */
-
-/* ESP config register 4 read-write, found only on fsc chips */
-#define ESP_CONFIG4_BBTE      0x01             /* Back-to-Back transfer enable */
-#define ESP_CONFIG4_TEST      0x02             /* Transfer counter test mode */
-#define ESP_CONFIG4_EAN       0x04             /* Enable Active Negotiation */
-
-/* ESP command register read-write */
-/* Group 1 commands:  These may be sent at any point in time to the ESP
- *                    chip.  None of them can generate interrupts 'cept
- *                    the "SCSI bus reset" command if you have not disabled
- *                    SCSI reset interrupts in the config1 ESP register.
- */
-#define ESP_CMD_NULL          0x00             /* Null command, ie. a nop */
-#define ESP_CMD_FLUSH         0x01             /* FIFO Flush */
-#define ESP_CMD_RC            0x02             /* Chip reset */
-#define ESP_CMD_RS            0x03             /* SCSI bus reset */
-
-/* Group 2 commands:  ESP must be an initiator and connected to a target
- *                    for these commands to work.
- */
-#define ESP_CMD_TI            0x10             /* Transfer Information */
-#define ESP_CMD_ICCSEQ        0x11             /* Initiator cmd complete sequence */
-#define ESP_CMD_MOK           0x12             /* Message okie-dokie */
-#define ESP_CMD_TPAD          0x18             /* Transfer Pad */
-#define ESP_CMD_SATN          0x1a             /* Set ATN */
-#define ESP_CMD_RATN          0x1b             /* De-assert ATN */
-
-/* Group 3 commands:  ESP must be in the MSGOUT or MSGIN state and be connected
- *                    to a target as the initiator for these commands to work.
- */
-#define ESP_CMD_SMSG          0x20             /* Send message */
-#define ESP_CMD_SSTAT         0x21             /* Send status */
-#define ESP_CMD_SDATA         0x22             /* Send data */
-#define ESP_CMD_DSEQ          0x23             /* Discontinue Sequence */
-#define ESP_CMD_TSEQ          0x24             /* Terminate Sequence */
-#define ESP_CMD_TCCSEQ        0x25             /* Target cmd cmplt sequence */
-#define ESP_CMD_DCNCT         0x27             /* Disconnect */
-#define ESP_CMD_RMSG          0x28             /* Receive Message */
-#define ESP_CMD_RCMD          0x29             /* Receive Command */
-#define ESP_CMD_RDATA         0x2a             /* Receive Data */
-#define ESP_CMD_RCSEQ         0x2b             /* Receive cmd sequence */
-
-/* Group 4 commands:  The ESP must be in the disconnected state and must
- *                    not be connected to any targets as initiator for
- *                    these commands to work.
- */
-#define ESP_CMD_RSEL          0x40             /* Reselect */
-#define ESP_CMD_SEL           0x41             /* Select w/o ATN */
-#define ESP_CMD_SELA          0x42             /* Select w/ATN */
-#define ESP_CMD_SELAS         0x43             /* Select w/ATN & STOP */
-#define ESP_CMD_ESEL          0x44             /* Enable selection */
-#define ESP_CMD_DSEL          0x45             /* Disable selections */
-#define ESP_CMD_SA3           0x46             /* Select w/ATN3 */
-#define ESP_CMD_RSEL3         0x47             /* Reselect3 */
-
-/* This bit enables the ESP's DMA */
-#define ESP_CMD_DMA           0x80             /* Do DMA? */
-
-/* ESP status register read-only */
-#define ESP_STAT_PIO          0x01             /* IO phase bit */
-#define ESP_STAT_PCD          0x02             /* CD phase bit */
-#define ESP_STAT_PMSG         0x04             /* MSG phase bit */
-#define ESP_STAT_PMASK        0x07             /* Mask of phase bits */
-#define ESP_STAT_TDONE        0x08             /* Transfer Completed */
-#define ESP_STAT_TCNT         0x10             /* Transfer Counter Is Zero */
-#define ESP_STAT_PERR         0x20             /* Parity error */
-#define ESP_STAT_SPAM         0x40             /* Real bad error */
-/* This indicates the 'interrupt pending' condition, it is a reserved
- * bit on old revs of the ESP (ESP100, ESP100A, FAS100A).
- */
-#define ESP_STAT_INTR         0x80             /* Interrupt */
-
-/* The status register can be masked with ESP_STAT_PMASK and compared
- * with the following values to determine the current phase the ESP
- * (at least thinks it) is in.  For our purposes we also add our own
- * software 'done' bit for our phase management engine.
- */
-#define ESP_DOP   (0)                                       /* Data Out  */
-#define ESP_DIP   (ESP_STAT_PIO)                            /* Data In   */
-#define ESP_CMDP  (ESP_STAT_PCD)                            /* Command   */
-#define ESP_STATP (ESP_STAT_PCD|ESP_STAT_PIO)               /* Status    */
-#define ESP_MOP   (ESP_STAT_PMSG|ESP_STAT_PCD)              /* Message Out */
-#define ESP_MIP   (ESP_STAT_PMSG|ESP_STAT_PCD|ESP_STAT_PIO) /* Message In */
-
-/* ESP interrupt register read-only */
-#define ESP_INTR_S            0x01             /* Select w/o ATN */
-#define ESP_INTR_SATN         0x02             /* Select w/ATN */
-#define ESP_INTR_RSEL         0x04             /* Reselected */
-#define ESP_INTR_FDONE        0x08             /* Function done */
-#define ESP_INTR_BSERV        0x10             /* Bus service */
-#define ESP_INTR_DC           0x20             /* Disconnect */
-#define ESP_INTR_IC           0x40             /* Illegal command given */
-#define ESP_INTR_SR           0x80             /* SCSI bus reset detected */
-
-/* Interrupt status macros */
-#define ESP_SRESET_IRQ(esp)  ((esp)->intreg & (ESP_INTR_SR))
-#define ESP_ILLCMD_IRQ(esp)  ((esp)->intreg & (ESP_INTR_IC))
-#define ESP_SELECT_WITH_ATN_IRQ(esp)     ((esp)->intreg & (ESP_INTR_SATN))
-#define ESP_SELECT_WITHOUT_ATN_IRQ(esp)  ((esp)->intreg & (ESP_INTR_S))
-#define ESP_SELECTION_IRQ(esp)  ((ESP_SELECT_WITH_ATN_IRQ(esp)) ||         \
-				 (ESP_SELECT_WITHOUT_ATN_IRQ(esp)))
-#define ESP_RESELECTION_IRQ(esp)         ((esp)->intreg & (ESP_INTR_RSEL))
-
-/* ESP sequence step register read-only */
-#define ESP_STEP_VBITS        0x07             /* Valid bits */
-#define ESP_STEP_ASEL         0x00             /* Selection&Arbitrate cmplt */
-#define ESP_STEP_SID          0x01             /* One msg byte sent */
-#define ESP_STEP_NCMD         0x02             /* Was not in command phase */
-#define ESP_STEP_PPC          0x03             /* Early phase chg caused cmnd
-                                                * bytes to be lost
-                                                */
-#define ESP_STEP_FINI4        0x04             /* Command was sent ok */
-
-/* Ho hum, some ESP's set the step register to this as well... */
-#define ESP_STEP_FINI5        0x05
-#define ESP_STEP_FINI6        0x06
-#define ESP_STEP_FINI7        0x07
-#define ESP_STEP_SOM          0x08             /* Synchronous Offset Max */
-
-/* ESP chip-test register read-write */
-#define ESP_TEST_TARG         0x01             /* Target test mode */
-#define ESP_TEST_INI          0x02             /* Initiator test mode */
-#define ESP_TEST_TS           0x04             /* Tristate test mode */
-
-/* ESP unique ID register read-only, found on fas236+fas100a+fsc only */
-#define ESP_UID_F100A         0x00             /* FAS100A  */
-#define ESP_UID_F236          0x02             /* FAS236   */
-#define ESP_UID_FSC           0xa2             /* NCR53CF9x-2  */
-#define ESP_UID_REV           0x07             /* ESP revision */
-#define ESP_UID_FAM           0xf8             /* ESP family   */
-
-/* ESP fifo flags register read-only */
-/* Note that the following implies a 16 byte FIFO on the ESP. */
-#define ESP_FF_FBYTES         0x1f             /* Num bytes in FIFO */
-#define ESP_FF_ONOTZERO       0x20             /* offset ctr not zero (esp100,fsc) */
-#define ESP_FF_SSTEP          0xe0             /* Sequence step */
-
-/* ESP clock conversion factor register write-only */
-#define ESP_CCF_F0            0x00             /* 35.01MHz - 40MHz */
-#define ESP_CCF_NEVER         0x01             /* Set it to this and die */
-#define ESP_CCF_F2            0x02             /* 10MHz */
-#define ESP_CCF_F3            0x03             /* 10.01MHz - 15MHz */
-#define ESP_CCF_F4            0x04             /* 15.01MHz - 20MHz */
-#define ESP_CCF_F5            0x05             /* 20.01MHz - 25MHz */
-#define ESP_CCF_F6            0x06             /* 25.01MHz - 30MHz */
-#define ESP_CCF_F7            0x07             /* 30.01MHz - 35MHz */
-
-#define ESP_BUS_TIMEOUT        275             /* In milli-seconds */
-#define ESP_TIMEO_CONST       8192
-#define FSC_TIMEO_CONST       7668
-#define ESP_NEG_DEFP(mhz, cfact) \
-        ((ESP_BUS_TIMEOUT * ((mhz) / 1000)) / (8192 * (cfact)))
-#define FSC_NEG_DEFP(mhz, cfact) \
-        ((ESP_BUS_TIMEOUT * ((mhz) / 1000)) / (7668 * (cfact)))
-#define ESP_MHZ_TO_CYCLE(mhertz)  ((1000000000) / ((mhertz) / 1000))
-#define ESP_TICK(ccf, cycle)  ((7682 * (ccf) * (cycle) / 1000))
-
-
-/* UGLY, UGLY, UGLY! */
-extern int nesps, esps_in_use, esps_running;
-
-/* For our interrupt engine. */
-#define for_each_esp(esp) \
-        for((esp) = espchain; (esp); (esp) = (esp)->next)
-
-
-/* External functions */
-extern void esp_bootup_reset(struct NCR_ESP *esp, struct ESP_regs *eregs);
-extern struct NCR_ESP *esp_allocate(struct scsi_host_template *, void *, int);
-extern void esp_deallocate(struct NCR_ESP *);
-extern void esp_release(void);
-extern void esp_initialize(struct NCR_ESP *);
-extern irqreturn_t esp_intr(int, void *);
-extern const char *esp_info(struct Scsi_Host *);
-extern int esp_queue(Scsi_Cmnd *, void (*done)(Scsi_Cmnd *));
-extern int esp_abort(Scsi_Cmnd *);
-extern int esp_reset(Scsi_Cmnd *);
-extern int esp_proc_info(struct Scsi_Host *shost, char *buffer, char **start, off_t offset, int length,
-			 int inout);
-extern int esp_slave_alloc(struct scsi_device *);
-extern void esp_slave_destroy(struct scsi_device *);
-#endif /* !(NCR53C9X_H) */