Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 996 insertions, 0 deletions

diff --git a/drivers/scsi/eata_pio.c b/drivers/scsi/eata_pio.c
new file mode 100644
index 000000000000..0ee49dc50b85
--- /dev/null
+++ b/drivers/scsi/eata_pio.c
@@ -0,0 +1,996 @@
+/************************************************************
+ *                                                          *
+ *               Linux EATA SCSI PIO driver                 *
+ *                                                          *
+ *  based on the CAM document CAM/89-004 rev. 2.0c,         *
+ *  DPT's driver kit, some internal documents and source,   *
+ *  and several other Linux scsi drivers and kernel docs.   *
+ *                                                          *
+ *  The driver currently:                                   *
+ *      -supports all EATA-PIO boards                       *
+ *      -only supports DASD devices                         *
+ *                                                          *
+ *  (c)1993-96 Michael Neuffer, Alfred Arnold               *
+ *             neuffer@goofy.zdv.uni-mainz.de               *
+ *             a.arnold@kfa-juelich.de                      * 
+ *                                                          *
+ *  Updated 2002 by Alan Cox <alan@redhat.com> for Linux    *
+ *  2.5.x and the newer locking and error handling          *
+ *                                                          *
+ *  This program is free software; you can redistribute it  *
+ *  and/or modify it under the terms of the GNU General     *
+ *  Public License as published by the Free Software        *
+ *  Foundation; either version 2 of the License, or         *
+ *  (at your option) any later version.                     *
+ *                                                          *
+ *  This program is distributed in the hope that it will be *
+ *  useful, but WITHOUT ANY WARRANTY; without even the      *
+ *  implied warranty of MERCHANTABILITY or FITNESS FOR A    *
+ *  PARTICULAR PURPOSE.  See the GNU General Public License *
+ *  for more details.                                       *
+ *                                                          *
+ *  You should have received a copy of the GNU General      *
+ *  Public License along with this kernel; if not, write to *
+ *  the Free Software Foundation, Inc., 675 Mass Ave,       *
+ *  Cambridge, MA 02139, USA.                               *
+ *							    *
+ *  For the avoidance of doubt the "preferred form" of this *
+ *  code is one which is in an open non patent encumbered   *
+ *  format. Where cryptographic key signing forms part of   *
+ *  the process of creating an executable the information   *
+ *  including keys needed to generate an equivalently       *
+ *  functional executable are deemed to be part of the 	    *
+ *  source code are deemed to be part of the source code.   *
+ *                                                          *
+ ************************************************************
+ *  last change: 2002/11/02               OS: Linux 2.5.45  *
+ ************************************************************/
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/string.h>
+#include <linux/ioport.h>
+#include <linux/slab.h>
+#include <linux/in.h>
+#include <linux/pci.h>
+#include <linux/proc_fs.h>
+#include <linux/interrupt.h>
+#include <linux/blkdev.h>
+#include <linux/spinlock.h>
+#include <linux/delay.h>
+
+#include <asm/io.h>
+
+#include <scsi/scsi.h>
+#include <scsi/scsi_cmnd.h>
+#include <scsi/scsi_device.h>
+#include <scsi/scsi_host.h>
+
+#include "eata_generic.h"
+#include "eata_pio.h"
+
+
+static uint ISAbases[MAXISA] =	{
+	 0x1F0, 0x170, 0x330, 0x230
+};
+
+static uint ISAirqs[MAXISA] = {
+	14, 12, 15, 11
+};
+
+static unsigned char EISAbases[] = { 
+	1, 1, 1, 1, 1, 1, 1, 1,
+	1, 1, 1, 1, 1, 1, 1, 1 
+};
+
+static uint registered_HBAs;
+static struct Scsi_Host *last_HBA;
+static struct Scsi_Host *first_HBA;
+static unsigned char reg_IRQ[16];
+static unsigned char reg_IRQL[16];
+static unsigned long int_counter;
+static unsigned long queue_counter;
+
+static struct scsi_host_template driver_template;
+
+/*
+ * eata_proc_info
+ * inout : decides on the direction of the dataflow and the meaning of the 
+ *         variables
+ * buffer: If inout==FALSE data is being written to it else read from it
+ * *start: If inout==FALSE start of the valid data in the buffer
+ * offset: If inout==FALSE offset from the beginning of the imaginary file 
+ *         from which we start writing into the buffer
+ * length: If inout==FALSE max number of bytes to be written into the buffer 
+ *         else number of bytes in the buffer
+ */
+static int eata_pio_proc_info(struct Scsi_Host *shost, char *buffer, char **start, off_t offset,
+			      int length, int rw)
+{
+    static u8 buff[512];
+    int size, len = 0;
+    off_t begin = 0, pos = 0;
+
+    if (rw)
+    	return -ENOSYS;
+    if (offset == 0)
+	memset(buff, 0, sizeof(buff));
+
+    size = sprintf(buffer+len, "EATA (Extended Attachment) PIO driver version: "
+		   "%d.%d%s\n",VER_MAJOR, VER_MINOR, VER_SUB);
+    len += size; pos = begin + len;
+    size = sprintf(buffer + len, "queued commands:     %10ld\n"
+		   "processed interrupts:%10ld\n", queue_counter, int_counter);
+    len += size; pos = begin + len;
+    
+    size = sprintf(buffer + len, "\nscsi%-2d: HBA %.10s\n",
+		   shost->host_no, SD(shost)->name);
+    len += size; 
+    pos = begin + len;
+    size = sprintf(buffer + len, "Firmware revision: v%s\n", 
+		   SD(shost)->revision);
+    len += size;
+    pos = begin + len;
+    size = sprintf(buffer + len, "IO: PIO\n");
+    len += size; 
+    pos = begin + len;
+    size = sprintf(buffer + len, "Base IO : %#.4x\n", (u32) shost->base);
+    len += size; 
+    pos = begin + len;
+    size = sprintf(buffer + len, "Host Bus: %s\n", 
+		   (SD(shost)->bustype == 'P')?"PCI ":
+		   (SD(shost)->bustype == 'E')?"EISA":"ISA ");
+    
+    len += size; 
+    pos = begin + len;
+    
+    if (pos < offset) {
+	len = 0;
+	begin = pos;
+    }
+    if (pos > offset + length)
+	goto stop_output;
+    
+ stop_output:
+    DBG(DBG_PROC, printk("2pos: %ld offset: %ld len: %d\n", pos, offset, len));
+    *start=buffer+(offset-begin);   /* Start of wanted data */
+    len-=(offset-begin);            /* Start slop */
+    if(len>length)
+	len = length;               /* Ending slop */
+    DBG(DBG_PROC, printk("3pos: %ld offset: %ld len: %d\n", pos, offset, len));
+    
+    return (len);     
+}
+
+static int eata_pio_release(struct Scsi_Host *sh)
+{
+	if (sh->irq && reg_IRQ[sh->irq] == 1)
+		free_irq(sh->irq, NULL);
+	else
+		reg_IRQ[sh->irq]--;
+	if (SD(sh)->channel == 0) {
+		if (sh->io_port && sh->n_io_port)
+			release_region(sh->io_port, sh->n_io_port);
+	}
+	return 1;
+}
+
+static void IncStat(struct scsi_pointer *SCp, uint Increment)
+{
+	SCp->ptr += Increment;
+	if ((SCp->this_residual -= Increment) == 0) {
+		if ((--SCp->buffers_residual) == 0)
+			SCp->Status = 0;
+		else {
+			SCp->buffer++;
+			SCp->ptr = page_address(SCp->buffer->page) + SCp->buffer->offset;
+			SCp->this_residual = SCp->buffer->length;
+		}
+	}
+}
+
+static void eata_pio_int_handler(int irq, void *dev_id, struct pt_regs *regs);
+
+static irqreturn_t do_eata_pio_int_handler(int irq, void *dev_id,
+						struct pt_regs *regs)
+{
+	unsigned long flags;
+	struct Scsi_Host *dev = dev_id;
+
+	spin_lock_irqsave(dev->host_lock, flags);
+	eata_pio_int_handler(irq, dev_id, regs);
+	spin_unlock_irqrestore(dev->host_lock, flags);
+	return IRQ_HANDLED;
+}
+
+static void eata_pio_int_handler(int irq, void *dev_id, struct pt_regs *regs)
+{
+	uint eata_stat = 0xfffff;
+	struct scsi_cmnd *cmd;
+	hostdata *hd;
+	struct eata_ccb *cp;
+	uint base;
+	uint x, z;
+	struct Scsi_Host *sh;
+	unsigned short zwickel = 0;
+	unsigned char stat, odd;
+
+	for (x = 1, sh = first_HBA; x <= registered_HBAs; x++, sh = SD(sh)->prev) 
+	{
+		if (sh->irq != irq)
+			continue;
+		if (inb((uint) sh->base + HA_RSTATUS) & HA_SBUSY)
+			continue;
+
+		int_counter++;
+
+		hd = SD(sh);
+
+		cp = &hd->ccb[0];
+		cmd = cp->cmd;
+		base = (uint) cmd->device->host->base;
+
+		do {
+			stat = inb(base + HA_RSTATUS);
+			if (stat & HA_SDRQ) {
+				if (cp->DataIn) {
+					z = 256;
+					odd = 0;
+					while ((cmd->SCp.Status) && ((z > 0) || (odd))) {
+						if (odd) {
+							*(cmd->SCp.ptr) = zwickel >> 8;
+							IncStat(&cmd->SCp, 1);
+							odd = 0;
+						}
+						x = min_t(unsigned int, z, cmd->SCp.this_residual / 2);
+						insw(base + HA_RDATA, cmd->SCp.ptr, x);
+						z -= x;
+						IncStat(&cmd->SCp, 2 * x);
+						if ((z > 0) && (cmd->SCp.this_residual == 1)) {
+							zwickel = inw(base + HA_RDATA);
+							*(cmd->SCp.ptr) = zwickel & 0xff;
+							IncStat(&cmd->SCp, 1);
+							z--;
+							odd = 1;
+						}
+					}
+					while (z > 0) {
+						zwickel = inw(base + HA_RDATA);
+						z--;
+					}
+				} else {	/* cp->DataOut */
+
+					odd = 0;
+					z = 256;
+					while ((cmd->SCp.Status) && ((z > 0) || (odd))) {
+						if (odd) {
+							zwickel += *(cmd->SCp.ptr) << 8;
+							IncStat(&cmd->SCp, 1);
+							outw(zwickel, base + HA_RDATA);
+							z--;
+							odd = 0;
+						}
+						x = min_t(unsigned int, z, cmd->SCp.this_residual / 2);
+						outsw(base + HA_RDATA, cmd->SCp.ptr, x);
+						z -= x;
+						IncStat(&cmd->SCp, 2 * x);
+						if ((z > 0) && (cmd->SCp.this_residual == 1)) {
+							zwickel = *(cmd->SCp.ptr);
+							zwickel &= 0xff;
+							IncStat(&cmd->SCp, 1);
+							odd = 1;
+						}
+					}
+					while (z > 0 || odd) {
+						outw(zwickel, base + HA_RDATA);
+						z--;
+						odd = 0;
+					}
+				}
+			}
+		}
+		while ((stat & HA_SDRQ) || ((stat & HA_SMORE) && hd->moresupport));
+
+		/* terminate handler if HBA goes busy again, i.e. transfers
+		 * more data */
+
+		if (stat & HA_SBUSY)
+			break;
+
+		/* OK, this is quite stupid, but I haven't found any correct
+		 * way to get HBA&SCSI status so far */
+
+		if (!(inb(base + HA_RSTATUS) & HA_SERROR)) {
+			cmd->result = (DID_OK << 16);
+			hd->devflags |= (1 << cp->cp_id);
+		} else if (hd->devflags & 1 << cp->cp_id)
+			cmd->result = (DID_OK << 16) + 0x02;
+		else
+			cmd->result = (DID_NO_CONNECT << 16);
+
+		if (cp->status == LOCKED) {
+			cp->status = FREE;
+			eata_stat = inb(base + HA_RSTATUS);
+			printk(KERN_CRIT "eata_pio: int_handler, freeing locked " "queueslot\n");
+			return;
+		}
+#if DBG_INTR2
+		if (stat != 0x50)
+			printk(KERN_DEBUG "stat: %#.2x, result: %#.8x\n", stat, cmd->result);
+#endif
+
+		cp->status = FREE;	/* now we can release the slot  */
+
+		cmd->scsi_done(cmd);
+	}
+
+	return;
+}
+
+static inline uint eata_pio_send_command(uint base, unsigned char command)
+{
+	uint loop = HZ / 2;
+
+	while (inb(base + HA_RSTATUS) & HA_SBUSY)
+		if (--loop == 0)
+			return 1;
+
+	/* Enable interrupts for HBA.  It is not the best way to do it at this
+	 * place, but I hope that it doesn't interfere with the IDE driver 
+	 * initialization this way */
+
+	outb(HA_CTRL_8HEADS, base + HA_CTRLREG);
+
+	outb(command, base + HA_WCOMMAND);
+	return 0;
+}
+
+static int eata_pio_queue(struct scsi_cmnd *cmd,
+		void (*done)(struct scsi_cmnd *))
+{
+	uint x, y;
+	uint base;
+
+	hostdata *hd;
+	struct Scsi_Host *sh;
+	struct eata_ccb *cp;
+
+	queue_counter++;
+
+	hd = HD(cmd);
+	sh = cmd->device->host;
+	base = (uint) sh->base;
+
+	/* use only slot 0, as 2001 can handle only one cmd at a time */
+
+	y = x = 0;
+
+	if (hd->ccb[y].status != FREE) {
+
+		DBG(DBG_QUEUE, printk(KERN_EMERG "can_queue %d, x %d, y %d\n", sh->can_queue, x, y));
+#if DEBUG_EATA
+		panic(KERN_EMERG "eata_pio: run out of queue slots cmdno:%ld " "intrno: %ld\n", queue_counter, int_counter);
+#else
+		panic(KERN_EMERG "eata_pio: run out of queue slots....\n");
+#endif
+	}
+
+	cp = &hd->ccb[y];
+
+	memset(cp, 0, sizeof(struct eata_ccb));
+	memset(cmd->sense_buffer, 0, sizeof(cmd->sense_buffer));
+
+	cp->status = USED;	/* claim free slot */
+
+	DBG(DBG_QUEUE, printk(KERN_DEBUG "eata_pio_queue pid %ld, target: %x, lun:" " %x, y %d\n", cmd->pid, cmd->device->id, cmd->device->lun, y));
+
+	cmd->scsi_done = (void *) done;
+
+	if (cmd->sc_data_direction == DMA_TO_DEVICE)
+		cp->DataOut = 1;	/* Output mode */
+	else
+		cp->DataIn = 0;	/* Input mode  */
+
+	cp->Interpret = (cmd->device->id == hd->hostid);
+	cp->cp_datalen = htonl((unsigned long) cmd->request_bufflen);
+	cp->Auto_Req_Sen = 0;
+	cp->cp_reqDMA = htonl(0);
+	cp->reqlen = 0;
+
+	cp->cp_id = cmd->device->id;
+	cp->cp_lun = cmd->device->lun;
+	cp->cp_dispri = 0;
+	cp->cp_identify = 1;
+	memcpy(cp->cp_cdb, cmd->cmnd, COMMAND_SIZE(*cmd->cmnd));
+
+	cp->cp_statDMA = htonl(0);
+
+	cp->cp_viraddr = cp;
+	cp->cmd = cmd;
+	cmd->host_scribble = (char *) &hd->ccb[y];
+
+	if (cmd->use_sg == 0) {
+		cmd->SCp.buffers_residual = 1;
+		cmd->SCp.ptr = cmd->request_buffer;
+		cmd->SCp.this_residual = cmd->request_bufflen;
+		cmd->SCp.buffer = NULL;
+	} else {
+		cmd->SCp.buffer = cmd->request_buffer;
+		cmd->SCp.buffers_residual = cmd->use_sg;
+		cmd->SCp.ptr = page_address(cmd->SCp.buffer->page) + cmd->SCp.buffer->offset;
+		cmd->SCp.this_residual = cmd->SCp.buffer->length;
+	}
+	cmd->SCp.Status = (cmd->SCp.this_residual != 0);	/* TRUE as long as bytes 
+								 * are to transfer */
+
+	if (eata_pio_send_command(base, EATA_CMD_PIO_SEND_CP)) {
+		cmd->result = DID_BUS_BUSY << 16;
+		printk(KERN_NOTICE "eata_pio_queue target %d, pid %ld, HBA busy, " "returning DID_BUS_BUSY, done.\n", cmd->device->id, cmd->pid);
+		done(cmd);
+		cp->status = FREE;
+		return (0);
+	}
+	/* FIXME: timeout */
+	while (!(inb(base + HA_RSTATUS) & HA_SDRQ))
+		cpu_relax();
+	outsw(base + HA_RDATA, cp, hd->cplen);
+	outb(EATA_CMD_PIO_TRUNC, base + HA_WCOMMAND);
+	for (x = 0; x < hd->cppadlen; x++)
+		outw(0, base + HA_RDATA);
+
+	DBG(DBG_QUEUE, printk(KERN_DEBUG "Queued base %#.4lx pid: %ld target: %x " "lun: %x slot %d irq %d\n", (long) sh->base, cmd->pid, cmd->device->id, cmd->device->lun, y, sh->irq));
+
+	return (0);
+}
+
+static int eata_pio_abort(struct scsi_cmnd *cmd)
+{
+	uint loop = HZ;
+
+	DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_abort called pid: %ld " "target: %x lun: %x reason %x\n", cmd->pid, cmd->device->id, cmd->device->lun, cmd->abort_reason));
+
+
+	while (inb(cmd->device->host->base + HA_RAUXSTAT) & HA_ABUSY)
+		if (--loop == 0) {
+			printk(KERN_WARNING "eata_pio: abort, timeout error.\n");
+			return FAILED;
+		}
+	if (CD(cmd)->status == FREE) {
+		DBG(DBG_ABNORM, printk(KERN_WARNING "Returning: SCSI_ABORT_NOT_RUNNING\n"));
+		return FAILED;
+	}
+	if (CD(cmd)->status == USED) {
+		DBG(DBG_ABNORM, printk(KERN_WARNING "Returning: SCSI_ABORT_BUSY\n"));
+		/* We want to sleep a bit more here */
+		return FAILED;		/* SNOOZE */
+	}
+	if (CD(cmd)->status == RESET) {
+		printk(KERN_WARNING "eata_pio: abort, command reset error.\n");
+		return FAILED;
+	}
+	if (CD(cmd)->status == LOCKED) {
+		DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio: abort, queue slot " "locked.\n"));
+		return FAILED;
+	}
+	panic("eata_pio: abort: invalid slot status\n");
+}
+
+static int eata_pio_host_reset(struct scsi_cmnd *cmd)
+{
+	uint x, limit = 0;
+	unsigned char success = 0;
+	struct scsi_cmnd *sp;
+	struct Scsi_Host *host = cmd->device->host;
+
+	DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset called pid:%ld target:" " %x lun: %x reason %x\n", cmd->pid, cmd->device->id, cmd->device->lun, cmd->abort_reason));
+
+	if (HD(cmd)->state == RESET) {
+		printk(KERN_WARNING "eata_pio_reset: exit, already in reset.\n");
+		return FAILED;
+	}
+
+	/* force all slots to be free */
+
+	for (x = 0; x < cmd->device->host->can_queue; x++) {
+
+		if (HD(cmd)->ccb[x].status == FREE)
+			continue;
+
+		sp = HD(cmd)->ccb[x].cmd;
+		HD(cmd)->ccb[x].status = RESET;
+		printk(KERN_WARNING "eata_pio_reset: slot %d in reset, pid %ld.\n", x, sp->pid);
+
+		if (sp == NULL)
+			panic("eata_pio_reset: slot %d, sp==NULL.\n", x);
+	}
+
+	/* hard reset the HBA  */
+	outb(EATA_CMD_RESET, (uint) cmd->device->host->base + HA_WCOMMAND);
+
+	DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: board reset done.\n"));
+	HD(cmd)->state = RESET;
+
+	spin_unlock_irq(host->host_lock);
+	msleep(3000);
+	spin_lock_irq(host->host_lock);
+
+	DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: interrupts disabled, " "loops %d.\n", limit));
+
+	for (x = 0; x < cmd->device->host->can_queue; x++) {
+
+		/* Skip slots already set free by interrupt */
+		if (HD(cmd)->ccb[x].status != RESET)
+			continue;
+
+		sp = HD(cmd)->ccb[x].cmd;
+		sp->result = DID_RESET << 16;
+
+		/* This mailbox is terminated */
+		printk(KERN_WARNING "eata_pio_reset: reset ccb %d.\n", x);
+		HD(cmd)->ccb[x].status = FREE;
+
+		sp->scsi_done(sp);
+	}
+
+	HD(cmd)->state = 0;
+
+	if (success) {		/* hmmm... */
+		DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: exit, success.\n"));
+		return SUCCESS;
+	} else {
+		DBG(DBG_ABNORM, printk(KERN_WARNING "eata_pio_reset: exit, wakeup.\n"));
+		return FAILED;
+	}
+}
+
+static char *get_pio_board_data(unsigned long base, uint irq, uint id, unsigned long cplen, unsigned short cppadlen)
+{
+	struct eata_ccb cp;
+	static char buff[256];
+	int z;
+
+	memset(&cp, 0, sizeof(struct eata_ccb));
+	memset(buff, 0, sizeof(buff));
+
+	cp.DataIn = 1;
+	cp.Interpret = 1;	/* Interpret command */
+
+	cp.cp_datalen = htonl(254);
+	cp.cp_dataDMA = htonl(0);
+
+	cp.cp_id = id;
+	cp.cp_lun = 0;
+
+	cp.cp_cdb[0] = INQUIRY;
+	cp.cp_cdb[1] = 0;
+	cp.cp_cdb[2] = 0;
+	cp.cp_cdb[3] = 0;
+	cp.cp_cdb[4] = 254;
+	cp.cp_cdb[5] = 0;
+
+	if (eata_pio_send_command((uint) base, EATA_CMD_PIO_SEND_CP))
+		return (NULL);
+	while (!(inb(base + HA_RSTATUS) & HA_SDRQ));
+	outsw(base + HA_RDATA, &cp, cplen);
+	outb(EATA_CMD_PIO_TRUNC, base + HA_WCOMMAND);
+	for (z = 0; z < cppadlen; z++)
+		outw(0, base + HA_RDATA);
+
+	while (inb(base + HA_RSTATUS) & HA_SBUSY);
+	if (inb(base + HA_RSTATUS) & HA_SERROR)
+		return (NULL);
+	else if (!(inb(base + HA_RSTATUS) & HA_SDRQ))
+		return (NULL);
+	else {
+		insw(base + HA_RDATA, &buff, 127);
+		while (inb(base + HA_RSTATUS) & HA_SDRQ)
+			inw(base + HA_RDATA);
+		return (buff);
+	}
+}
+
+static int get_pio_conf_PIO(u32 base, struct get_conf *buf)
+{
+	unsigned long loop = HZ / 2;
+	int z;
+	unsigned short *p;
+
+	if (!request_region(base, 9, "eata_pio"))
+		return 0;
+
+	memset(buf, 0, sizeof(struct get_conf));
+
+	while (inb(base + HA_RSTATUS) & HA_SBUSY)
+		if (--loop == 0)
+			goto fail;
+
+	DBG(DBG_PIO && DBG_PROBE, printk(KERN_DEBUG "Issuing PIO READ CONFIG to HBA at %#x\n", base));
+	eata_pio_send_command(base, EATA_CMD_PIO_READ_CONFIG);
+
+	loop = HZ / 2;
+	for (p = (unsigned short *) buf; (long) p <= ((long) buf + (sizeof(struct get_conf) / 2)); p++) {
+		while (!(inb(base + HA_RSTATUS) & HA_SDRQ))
+			if (--loop == 0)
+				goto fail;
+
+		loop = HZ / 2;
+		*p = inw(base + HA_RDATA);
+	}
+	if (inb(base + HA_RSTATUS) & HA_SERROR) {
+		DBG(DBG_PROBE, printk("eata_dma: get_conf_PIO, error during "
+					"transfer for HBA at %x\n", base));
+		goto fail;
+	}
+
+	if (htonl(EATA_SIGNATURE) != buf->signature)
+		goto fail;
+
+	DBG(DBG_PIO && DBG_PROBE, printk(KERN_NOTICE "EATA Controller found "
+				"at %#4x EATA Level: %x\n",
+				base, (uint) (buf->version)));
+
+	while (inb(base + HA_RSTATUS) & HA_SDRQ)
+		inw(base + HA_RDATA);
+
+	if (!ALLOW_DMA_BOARDS) {
+		for (z = 0; z < MAXISA; z++)
+			if (base == ISAbases[z]) {
+				buf->IRQ = ISAirqs[z];
+				break;
+			}
+	}
+
+	return 1;
+
+ fail:
+	release_region(base, 9);
+	return 0;
+}
+
+static void print_pio_config(struct get_conf *gc)
+{
+	printk("Please check values: (read config data)\n");
+	printk("LEN: %d ver:%d OCS:%d TAR:%d TRNXFR:%d MORES:%d\n", (uint) ntohl(gc->len), gc->version, gc->OCS_enabled, gc->TAR_support, gc->TRNXFR, gc->MORE_support);
+	printk("HAAV:%d SCSIID0:%d ID1:%d ID2:%d QUEUE:%d SG:%d SEC:%d\n", gc->HAA_valid, gc->scsi_id[3], gc->scsi_id[2], gc->scsi_id[1], ntohs(gc->queuesiz), ntohs(gc->SGsiz), gc->SECOND);
+	printk("IRQ:%d IRQT:%d FORCADR:%d MCH:%d RIDQ:%d\n", gc->IRQ, gc->IRQ_TR, gc->FORCADR, gc->MAX_CHAN, gc->ID_qest);
+}
+
+static uint print_selftest(uint base)
+{
+	unsigned char buffer[512];
+#ifdef VERBOSE_SETUP
+	int z;
+#endif
+
+	printk("eata_pio: executing controller self test & setup...\n");
+	while (inb(base + HA_RSTATUS) & HA_SBUSY);
+	outb(EATA_CMD_PIO_SETUPTEST, base + HA_WCOMMAND);
+	do {
+		while (inb(base + HA_RSTATUS) & HA_SBUSY)
+			/* nothing */ ;
+		if (inb(base + HA_RSTATUS) & HA_SDRQ) {
+			insw(base + HA_RDATA, &buffer, 256);
+#ifdef VERBOSE_SETUP
+			/* no beeps please... */
+			for (z = 0; z < 511 && buffer[z]; z++)
+				if (buffer[z] != 7)
+					printk("%c", buffer[z]);
+#endif
+		}
+	} while (inb(base + HA_RSTATUS) & (HA_SBUSY | HA_SDRQ));
+
+	return (!(inb(base + HA_RSTATUS) & HA_SERROR));
+}
+
+static int register_pio_HBA(long base, struct get_conf *gc)
+{
+	unsigned long size = 0;
+	char *buff;
+	unsigned long cplen;
+	unsigned short cppadlen;
+	struct Scsi_Host *sh;
+	hostdata *hd;
+
+	DBG(DBG_REGISTER, print_pio_config(gc));
+
+	if (gc->DMA_support) {
+		printk("HBA at %#.4lx supports DMA. Please use EATA-DMA driver.\n", base);
+		if (!ALLOW_DMA_BOARDS)
+			return 0;
+	}
+
+	if ((buff = get_pio_board_data((uint) base, gc->IRQ, gc->scsi_id[3], cplen = (htonl(gc->cplen) + 1) / 2, cppadlen = (htons(gc->cppadlen) + 1) / 2)) == NULL) {
+		printk("HBA at %#lx didn't react on INQUIRY. Sorry.\n", (unsigned long) base);
+		return 0;
+	}
+
+	if (!print_selftest(base) && !ALLOW_DMA_BOARDS) {
+		printk("HBA at %#lx failed while performing self test & setup.\n", (unsigned long) base);
+		return 0;
+	}
+
+	size = sizeof(hostdata) + (sizeof(struct eata_ccb) * ntohs(gc->queuesiz));
+
+	sh = scsi_register(&driver_template, size);
+	if (sh == NULL)
+		return 0;
+
+	if (!reg_IRQ[gc->IRQ]) {	/* Interrupt already registered ? */
+		if (!request_irq(gc->IRQ, do_eata_pio_int_handler, SA_INTERRUPT, "EATA-PIO", sh)) {
+			reg_IRQ[gc->IRQ]++;
+			if (!gc->IRQ_TR)
+				reg_IRQL[gc->IRQ] = 1;	/* IRQ is edge triggered */
+		} else {
+			printk("Couldn't allocate IRQ %d, Sorry.\n", gc->IRQ);
+			return 0;
+		}
+	} else {		/* More than one HBA on this IRQ */
+		if (reg_IRQL[gc->IRQ]) {
+			printk("Can't support more than one HBA on this IRQ,\n" "  if the IRQ is edge triggered. Sorry.\n");
+			return 0;
+		} else
+			reg_IRQ[gc->IRQ]++;
+	}
+
+	hd = SD(sh);
+
+	memset(hd->ccb, 0, (sizeof(struct eata_ccb) * ntohs(gc->queuesiz)));
+	memset(hd->reads, 0, sizeof(unsigned long) * 26);
+
+	strlcpy(SD(sh)->vendor, &buff[8], sizeof(SD(sh)->vendor));
+	strlcpy(SD(sh)->name, &buff[16], sizeof(SD(sh)->name));
+	SD(sh)->revision[0] = buff[32];
+	SD(sh)->revision[1] = buff[33];
+	SD(sh)->revision[2] = buff[34];
+	SD(sh)->revision[3] = '.';
+	SD(sh)->revision[4] = buff[35];
+	SD(sh)->revision[5] = 0;
+
+	switch (ntohl(gc->len)) {
+	case 0x1c:
+		SD(sh)->EATA_revision = 'a';
+		break;
+	case 0x1e:
+		SD(sh)->EATA_revision = 'b';
+		break;
+	case 0x22:
+		SD(sh)->EATA_revision = 'c';
+		break;
+	case 0x24:
+		SD(sh)->EATA_revision = 'z';
+	default:
+		SD(sh)->EATA_revision = '?';
+	}
+
+	if (ntohl(gc->len) >= 0x22) {
+		if (gc->is_PCI)
+			hd->bustype = IS_PCI;
+		else if (gc->is_EISA)
+			hd->bustype = IS_EISA;
+		else
+			hd->bustype = IS_ISA;
+	} else {
+		if (buff[21] == '4')
+			hd->bustype = IS_PCI;
+		else if (buff[21] == '2')
+			hd->bustype = IS_EISA;
+		else
+			hd->bustype = IS_ISA;
+	}
+
+	SD(sh)->cplen = cplen;
+	SD(sh)->cppadlen = cppadlen;
+	SD(sh)->hostid = gc->scsi_id[3];
+	SD(sh)->devflags = 1 << gc->scsi_id[3];
+	SD(sh)->moresupport = gc->MORE_support;
+	sh->unique_id = base;
+	sh->base = base;
+	sh->io_port = base;
+	sh->n_io_port = 9;
+	sh->irq = gc->IRQ;
+	sh->dma_channel = PIO;
+	sh->this_id = gc->scsi_id[3];
+	sh->can_queue = 1;
+	sh->cmd_per_lun = 1;
+	sh->sg_tablesize = SG_ALL;
+
+	hd->channel = 0;
+
+	sh->max_id = 8;
+	sh->max_lun = 8;
+
+	if (gc->SECOND)
+		hd->primary = 0;
+	else
+		hd->primary = 1;
+
+	sh->unchecked_isa_dma = 0;	/* We can only do PIO */
+
+	hd->next = NULL;	/* build a linked list of all HBAs */
+	hd->prev = last_HBA;
+	if (hd->prev != NULL)
+		SD(hd->prev)->next = sh;
+	last_HBA = sh;
+	if (first_HBA == NULL)
+		first_HBA = sh;
+	registered_HBAs++;
+	return (1);
+}
+
+static void find_pio_ISA(struct get_conf *buf)
+{
+	int i;
+
+	for (i = 0; i < MAXISA; i++) {
+		if (!ISAbases[i])
+			continue;
+		if (!get_pio_conf_PIO(ISAbases[i], buf))
+			continue;
+		if (!register_pio_HBA(ISAbases[i], buf))
+			release_region(ISAbases[i], 9);
+		else
+			ISAbases[i] = 0;
+	}
+	return;
+}
+
+static void find_pio_EISA(struct get_conf *buf)
+{
+	u32 base;
+	int i;
+
+#ifdef CHECKPAL
+	u8 pal1, pal2, pal3;
+#endif
+
+	for (i = 0; i < MAXEISA; i++) {
+		if (EISAbases[i]) {	/* Still a possibility ?          */
+
+			base = 0x1c88 + (i * 0x1000);
+#ifdef CHECKPAL
+			pal1 = inb((u16) base - 8);
+			pal2 = inb((u16) base - 7);
+			pal3 = inb((u16) base - 6);
+
+			if (((pal1 == 0x12) && (pal2 == 0x14)) || ((pal1 == 0x38) && (pal2 == 0xa3) && (pal3 == 0x82)) || ((pal1 == 0x06) && (pal2 == 0x94) && (pal3 == 0x24))) {
+				DBG(DBG_PROBE, printk(KERN_NOTICE "EISA EATA id tags found: " "%x %x %x \n", (int) pal1, (int) pal2, (int) pal3));
+#endif
+				if (get_pio_conf_PIO(base, buf)) {
+					DBG(DBG_PROBE && DBG_EISA, print_pio_config(buf));
+					if (buf->IRQ) {
+						if (!register_pio_HBA(base, buf))
+							release_region(base, 9);
+					} else {
+						printk(KERN_NOTICE "eata_dma: No valid IRQ. HBA " "removed from list\n");
+						release_region(base, 9);
+					}
+				}
+				/* Nothing found here so we take it from the list */
+				EISAbases[i] = 0;
+#ifdef CHECKPAL
+			}
+#endif
+		}
+	}
+	return;
+}
+
+static void find_pio_PCI(struct get_conf *buf)
+{
+#ifndef CONFIG_PCI
+	printk("eata_dma: kernel PCI support not enabled. Skipping scan for PCI HBAs.\n");
+#else
+	struct pci_dev *dev = NULL;
+	u32 base, x;
+
+	while ((dev = pci_find_device(PCI_VENDOR_ID_DPT, PCI_DEVICE_ID_DPT, dev)) != NULL) {
+		DBG(DBG_PROBE && DBG_PCI, printk("eata_pio: find_PCI, HBA at %s\n", pci_name(dev)));
+		if (pci_enable_device(dev))
+			continue;
+		pci_set_master(dev);
+		base = pci_resource_flags(dev, 0);
+		if (base & IORESOURCE_MEM) {
+			printk("eata_pio: invalid base address of device %s\n", pci_name(dev));
+			continue;
+		}
+		base = pci_resource_start(dev, 0);
+		/* EISA tag there ? */
+		if ((inb(base) == 0x12) && (inb(base + 1) == 0x14))
+			continue;	/* Jep, it's forced, so move on  */
+		base += 0x10;	/* Now, THIS is the real address */
+		if (base != 0x1f8) {
+			/* We didn't find it in the primary search */
+			if (get_pio_conf_PIO(base, buf)) {
+				if (buf->FORCADR) {	/* If the address is forced */
+					release_region(base, 9);
+					continue;	/* we'll find it later      */
+				}
+
+				/* OK. We made it till here, so we can go now  
+				 * and register it. We  only have to check and 
+				 * eventually remove it from the EISA and ISA list 
+				 */
+
+				if (!register_pio_HBA(base, buf)) {
+					release_region(base, 9);
+					continue;
+				}
+
+				if (base < 0x1000) {
+					for (x = 0; x < MAXISA; ++x) {
+						if (ISAbases[x] == base) {
+							ISAbases[x] = 0;
+							break;
+						}
+					}
+				} else if ((base & 0x0fff) == 0x0c88) {
+					x = (base >> 12) & 0x0f;
+					EISAbases[x] = 0;
+				}
+			}
+#ifdef CHECK_BLINK
+			else if (check_blink_state(base)) {
+				printk("eata_pio: HBA is in BLINK state.\n" "Consult your HBAs manual to correct this.\n");
+			}
+#endif
+		}
+	}
+#endif				/* #ifndef CONFIG_PCI */
+}
+
+static int eata_pio_detect(struct scsi_host_template *tpnt)
+{
+	struct Scsi_Host *HBA_ptr;
+	struct get_conf gc;
+	int i;
+
+	find_pio_PCI(&gc);
+	find_pio_EISA(&gc);
+	find_pio_ISA(&gc);
+
+	for (i = 0; i <= MAXIRQ; i++)
+		if (reg_IRQ[i])
+			request_irq(i, do_eata_pio_int_handler, SA_INTERRUPT, "EATA-PIO", NULL);
+
+	HBA_ptr = first_HBA;
+
+	if (registered_HBAs != 0) {
+		printk("EATA (Extended Attachment) PIO driver version: %d.%d%s\n"
+		       "(c) 1993-95 Michael Neuffer, neuffer@goofy.zdv.uni-mainz.de\n" "            Alfred Arnold,   a.arnold@kfa-juelich.de\n" "This release only supports DASD devices (harddisks)\n", VER_MAJOR, VER_MINOR, VER_SUB);
+
+		printk("Registered HBAs:\n");
+		printk("HBA no. Boardtype: Revis: EATA: Bus: BaseIO: IRQ: Ch: ID: Pr:" " QS: SG: CPL:\n");
+		for (i = 1; i <= registered_HBAs; i++) {
+			printk("scsi%-2d: %.10s v%s 2.0%c  %s %#.4x   %2d   %d   %d   %c"
+			       "  %2d  %2d  %2d\n",
+			       HBA_ptr->host_no, SD(HBA_ptr)->name, SD(HBA_ptr)->revision,
+			       SD(HBA_ptr)->EATA_revision, (SD(HBA_ptr)->bustype == 'P') ?
+			       "PCI " : (SD(HBA_ptr)->bustype == 'E') ? "EISA" : "ISA ",
+			       (uint) HBA_ptr->base, HBA_ptr->irq, SD(HBA_ptr)->channel, HBA_ptr->this_id,
+			       SD(HBA_ptr)->primary ? 'Y' : 'N', HBA_ptr->can_queue,
+			       HBA_ptr->sg_tablesize, HBA_ptr->cmd_per_lun);
+			HBA_ptr = SD(HBA_ptr)->next;
+		}
+	}
+	return (registered_HBAs);
+}
+
+static struct scsi_host_template driver_template = {
+	.proc_name		= "eata_pio",
+	.name              	= "EATA (Extended Attachment) PIO driver",
+	.proc_info         	= eata_pio_proc_info,
+	.detect            	= eata_pio_detect,
+	.release           	= eata_pio_release,
+	.queuecommand      	= eata_pio_queue,
+	.eh_abort_handler  	= eata_pio_abort,
+	.eh_host_reset_handler	= eata_pio_host_reset,
+	.use_clustering    	= ENABLE_CLUSTERING,
+};
+
+MODULE_AUTHOR("Michael Neuffer, Alfred Arnold");
+MODULE_DESCRIPTION("EATA SCSI PIO driver");
+MODULE_LICENSE("GPL");
+
+#include "scsi_module.c"