Linux-2.6.12-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, 881 insertions, 0 deletions

diff --git a/drivers/scsi/sym53c416.c b/drivers/scsi/sym53c416.c
new file mode 100644
index 000000000000..f26c3a29e631
--- /dev/null
+++ b/drivers/scsi/sym53c416.c
@@ -0,0 +1,881 @@
+/*
+ *  sym53c416.c
+ *  Low-level SCSI driver for sym53c416 chip.
+ *  Copyright (C) 1998 Lieven Willems (lw_linux@hotmail.com)
+ * 
+ *  Changes : 
+ * 
+ *  Marcelo Tosatti <marcelo@conectiva.com.br> : Added io_request_lock locking
+ *  Alan Cox <alan@redhat.com> : Cleaned up code formatting
+ *				 Fixed an irq locking bug
+ *				 Added ISAPnP support
+ *  Bjoern A. Zeeb <bzeeb@zabbadoz.net> : Initial irq locking updates
+ *					  Added another card with ISAPnP support
+ * 
+ *  LILO command line usage: sym53c416=<PORTBASE>[,<IRQ>]
+ *
+ *  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, 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.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/string.h>
+#include <linux/ioport.h>
+#include <linux/sched.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/proc_fs.h>
+#include <linux/spinlock.h>
+#include <asm/dma.h>
+#include <asm/system.h>
+#include <asm/io.h>
+#include <linux/blkdev.h>
+#include <linux/isapnp.h>
+#include "scsi.h"
+#include <scsi/scsi_host.h>
+#include "sym53c416.h"
+
+#define VERSION_STRING        "Version 1.0.0-ac"
+
+#define TC_LOW       0x00     /* Transfer counter low        */
+#define TC_MID       0x01     /* Transfer counter mid        */
+#define SCSI_FIFO    0x02     /* SCSI FIFO register          */
+#define COMMAND_REG  0x03     /* Command Register            */
+#define STATUS_REG   0x04     /* Status Register (READ)      */
+#define DEST_BUS_ID  0x04     /* Destination Bus ID (WRITE)  */
+#define INT_REG      0x05     /* Interrupt Register (READ)   */
+#define TOM          0x05     /* Time out multiplier (WRITE) */
+#define STP          0x06     /* Synchronous Transfer period */
+#define SYNC_OFFSET  0x07     /* Synchronous Offset          */
+#define CONF_REG_1   0x08     /* Configuration register 1    */
+#define CONF_REG_2   0x0B     /* Configuration register 2    */
+#define CONF_REG_3   0x0C     /* Configuration register 3    */
+#define CONF_REG_4   0x0D     /* Configuration register 4    */
+#define TC_HIGH      0x0E     /* Transfer counter high       */
+#define PIO_FIFO_1   0x10     /* PIO FIFO register 1         */
+#define PIO_FIFO_2   0x11     /* PIO FIFO register 2         */
+#define PIO_FIFO_3   0x12     /* PIO FIFO register 3         */
+#define PIO_FIFO_4   0x13     /* PIO FIFO register 4         */
+#define PIO_FIFO_CNT 0x14     /* PIO FIFO count              */
+#define PIO_INT_REG  0x15     /* PIO interrupt register      */
+#define CONF_REG_5   0x16     /* Configuration register 5    */
+#define FEATURE_EN   0x1D     /* Feature Enable register     */
+
+/* Configuration register 1 entries: */
+/* Bits 2-0: SCSI ID of host adapter */
+#define SCM    0x80                     /* Slow Cable Mode              */
+#define SRID   0x40                     /* SCSI Reset Interrupt Disable */
+#define PTM    0x20                     /* Parity Test Mode             */
+#define EPC    0x10                     /* Enable Parity Checking       */
+#define CTME   0x08                     /* Special Test Mode            */
+
+/* Configuration register 2 entries: */
+#define FE     0x40                     /* Features Enable              */
+#define SCSI2  0x08                     /* SCSI 2 Enable                */
+#define TBPA   0x04                     /* Target Bad Parity Abort      */
+
+/* Configuration register 3 entries: */
+#define IDMRC  0x80                     /* ID Message Reserved Check    */
+#define QTE    0x40                     /* Queue Tag Enable             */
+#define CDB10  0x20                     /* Command Descriptor Block 10  */
+#define FSCSI  0x10                     /* FastSCSI                     */
+#define FCLK   0x08                     /* FastClock                    */
+
+/* Configuration register 4 entries: */
+#define RBS    0x08                     /* Register bank select         */
+#define EAN    0x04                     /* Enable Active Negotiation    */
+
+/* Configuration register 5 entries: */
+#define LPSR   0x80                     /* Lower Power SCSI Reset       */
+#define IE     0x20                     /* Interrupt Enable             */
+#define LPM    0x02                     /* Low Power Mode               */
+#define WSE0   0x01                     /* 0WS Enable                   */
+
+/* Interrupt register entries: */
+#define SRST   0x80                     /* SCSI Reset                   */
+#define ILCMD  0x40                     /* Illegal Command              */
+#define DIS    0x20                     /* Disconnect                   */
+#define BS     0x10                     /* Bus Service                  */
+#define FC     0x08                     /* Function Complete            */
+#define RESEL  0x04                     /* Reselected                   */
+#define SI     0x03                     /* Selection Interrupt          */
+
+/* Status Register Entries: */
+#define SCI    0x80                     /* SCSI Core Int                */
+#define GE     0x40                     /* Gross Error                  */
+#define PE     0x20                     /* Parity Error                 */
+#define TC     0x10                     /* Terminal Count               */
+#define VGC    0x08                     /* Valid Group Code             */
+#define PHBITS 0x07                     /* Phase bits                   */
+
+/* PIO Interrupt Register Entries: */
+#define SCI    0x80                     /* SCSI Core Int                */
+#define PFI    0x40                     /* PIO FIFO Interrupt           */
+#define FULL   0x20                     /* PIO FIFO Full                */
+#define EMPTY  0x10                     /* PIO FIFO Empty               */
+#define CE     0x08                     /* Collision Error              */
+#define OUE    0x04                     /* Overflow / Underflow error   */
+#define FIE    0x02                     /* Full Interrupt Enable        */
+#define EIE    0x01                     /* Empty Interrupt Enable       */
+
+/* SYM53C416 SCSI phases (lower 3 bits of SYM53C416_STATUS_REG) */
+#define PHASE_DATA_OUT    0x00
+#define PHASE_DATA_IN     0x01
+#define PHASE_COMMAND     0x02
+#define PHASE_STATUS      0x03
+#define PHASE_RESERVED_1  0x04
+#define PHASE_RESERVED_2  0x05
+#define PHASE_MESSAGE_OUT 0x06
+#define PHASE_MESSAGE_IN  0x07
+
+/* SYM53C416 core commands */
+#define NOOP                      0x00
+#define FLUSH_FIFO                0x01
+#define RESET_CHIP                0x02
+#define RESET_SCSI_BUS            0x03
+#define DISABLE_SEL_RESEL         0x45
+#define RESEL_SEQ                 0x40
+#define SEL_WITHOUT_ATN_SEQ       0x41
+#define SEL_WITH_ATN_SEQ          0x42
+#define SEL_WITH_ATN_AND_STOP_SEQ 0x43
+#define ENABLE_SEL_RESEL          0x44
+#define SEL_WITH_ATN3_SEQ         0x46
+#define RESEL3_SEQ                0x47
+#define SND_MSG                   0x20
+#define SND_STAT                  0x21
+#define SND_DATA                  0x22
+#define DISCONNECT_SEQ            0x23
+#define TERMINATE_SEQ             0x24
+#define TARGET_COMM_COMPLETE_SEQ  0x25
+#define DISCONN                   0x27
+#define RECV_MSG_SEQ              0x28
+#define RECV_CMD                  0x29
+#define RECV_DATA                 0x2A
+#define RECV_CMD_SEQ              0x2B
+#define TARGET_ABORT_PIO          0x04
+#define TRANSFER_INFORMATION      0x10
+#define INIT_COMM_COMPLETE_SEQ    0x11
+#define MSG_ACCEPTED              0x12
+#define TRANSFER_PAD              0x18
+#define SET_ATN                   0x1A
+#define RESET_ATN                 0x1B
+#define ILLEGAL                   0xFF
+
+#define PIO_MODE                  0x80
+
+#define IO_RANGE 0x20         /* 0x00 - 0x1F                   */
+#define ID       "sym53c416"	/* Attention: copied to the sym53c416.h */
+#define PIO_SIZE 128          /* Size of PIO fifo is 128 bytes */
+
+#define READ_TIMEOUT              150
+#define WRITE_TIMEOUT             150
+
+#ifdef MODULE
+
+#define sym53c416_base sym53c416
+#define sym53c416_base_1 sym53c416_1
+#define sym53c416_base_2 sym53c416_2
+#define sym53c416_base_3 sym53c416_3
+
+static unsigned int sym53c416_base[2] = {0,0};
+static unsigned int sym53c416_base_1[2] = {0,0};
+static unsigned int sym53c416_base_2[2] = {0,0};
+static unsigned int sym53c416_base_3[2] = {0,0};
+
+#endif
+
+#define MAXHOSTS 4
+
+#define SG_ADDRESS(buffer)     ((char *) (page_address((buffer)->page)+(buffer)->offset))
+
+enum phases
+{
+	idle,
+	data_out,
+	data_in,
+	command_ph,
+	status_ph,
+	message_out,
+	message_in
+};
+
+typedef struct
+{
+	int base;
+	int irq;
+	int scsi_id;
+} host;
+
+static host hosts[MAXHOSTS] = {
+                       {0, 0, SYM53C416_SCSI_ID},
+                       {0, 0, SYM53C416_SCSI_ID},
+                       {0, 0, SYM53C416_SCSI_ID},
+                       {0, 0, SYM53C416_SCSI_ID}
+                       };
+
+static int host_index = 0;
+static char info[120];
+static Scsi_Cmnd *current_command = NULL;
+static int fastpio = 1;
+
+static int probeaddrs[] = {0x200, 0x220, 0x240, 0};
+
+static void sym53c416_set_transfer_counter(int base, unsigned int len)
+{
+	/* Program Transfer Counter */
+	outb(len & 0x0000FF, base + TC_LOW);
+	outb((len & 0x00FF00) >> 8, base + TC_MID);
+	outb((len & 0xFF0000) >> 16, base + TC_HIGH);
+}
+
+static DEFINE_SPINLOCK(sym53c416_lock);
+
+/* Returns the number of bytes read */
+static __inline__ unsigned int sym53c416_read(int base, unsigned char *buffer, unsigned int len)
+{
+	unsigned int orig_len = len;
+	unsigned long flags = 0;
+	unsigned int bytes_left;
+	unsigned long i;
+	int timeout = READ_TIMEOUT;
+
+	/* Do transfer */
+	spin_lock_irqsave(&sym53c416_lock, flags);
+	while(len && timeout)
+	{
+		bytes_left = inb(base + PIO_FIFO_CNT); /* Number of bytes in the PIO FIFO */
+		if(fastpio && bytes_left > 3)
+		{
+			insl(base + PIO_FIFO_1, buffer, bytes_left >> 2);
+			buffer += bytes_left & 0xFC;
+			len -= bytes_left & 0xFC;
+		}
+		else if(bytes_left > 0)
+		{
+			len -= bytes_left;
+			for(; bytes_left > 0; bytes_left--)
+				*(buffer++) = inb(base + PIO_FIFO_1);
+		}
+		else
+		{
+			i = jiffies + timeout;
+			spin_unlock_irqrestore(&sym53c416_lock, flags);
+			while(time_before(jiffies, i) && (inb(base + PIO_INT_REG) & EMPTY) && timeout)
+				if(inb(base + PIO_INT_REG) & SCI)
+					timeout = 0;
+			spin_lock_irqsave(&sym53c416_lock, flags);
+			if(inb(base + PIO_INT_REG) & EMPTY)
+				timeout = 0;
+		}
+	}
+	spin_unlock_irqrestore(&sym53c416_lock, flags);
+	return orig_len - len;
+}
+
+/* Returns the number of bytes written */
+static __inline__ unsigned int sym53c416_write(int base, unsigned char *buffer, unsigned int len)
+{
+	unsigned int orig_len = len;
+	unsigned long flags = 0;
+	unsigned int bufferfree;
+	unsigned long i;
+	unsigned int timeout = WRITE_TIMEOUT;
+
+	/* Do transfer */
+	spin_lock_irqsave(&sym53c416_lock, flags);
+	while(len && timeout)
+	{
+		bufferfree = PIO_SIZE - inb(base + PIO_FIFO_CNT);
+		if(bufferfree > len)
+			bufferfree = len;
+		if(fastpio && bufferfree > 3)
+		{
+			outsl(base + PIO_FIFO_1, buffer, bufferfree >> 2);
+			buffer += bufferfree & 0xFC;
+			len -= bufferfree & 0xFC;
+		}
+		else if(bufferfree > 0)
+		{
+			len -= bufferfree;
+			for(; bufferfree > 0; bufferfree--)
+				outb(*(buffer++), base + PIO_FIFO_1);
+		}
+		else
+		{
+			i = jiffies + timeout;
+			spin_unlock_irqrestore(&sym53c416_lock, flags);
+			while(time_before(jiffies, i) && (inb(base + PIO_INT_REG) & FULL) && timeout)
+				;
+			spin_lock_irqsave(&sym53c416_lock, flags);
+			if(inb(base + PIO_INT_REG) & FULL)
+				timeout = 0;
+		}
+	}
+	spin_unlock_irqrestore(&sym53c416_lock, flags);
+	return orig_len - len;
+}
+
+static irqreturn_t sym53c416_intr_handle(int irq, void *dev_id,
+					struct pt_regs *regs)
+{
+	struct Scsi_Host *dev = dev_id;
+	int base = 0;
+	int i;
+	unsigned long flags = 0;
+	unsigned char status_reg, pio_int_reg, int_reg;
+	struct scatterlist *sglist;
+	unsigned int sgcount;
+	unsigned int tot_trans = 0;
+
+	/* We search the base address of the host adapter which caused the interrupt */
+	/* FIXME: should pass dev_id sensibly as hosts[i] */
+	for(i = 0; i < host_index && !base; i++)
+		if(irq == hosts[i].irq)
+			base = hosts[i].base;
+	/* If no adapter found, we cannot handle the interrupt. Leave a message */
+	/* and continue. This should never happen...                            */
+	if(!base)
+	{
+		printk(KERN_ERR "sym53c416: No host adapter defined for interrupt %d\n", irq);
+		return IRQ_NONE;
+	}
+	/* Now we have the base address and we can start handling the interrupt */
+
+	spin_lock_irqsave(dev->host_lock,flags);
+	status_reg = inb(base + STATUS_REG);
+	pio_int_reg = inb(base + PIO_INT_REG);
+	int_reg = inb(base + INT_REG);
+	spin_unlock_irqrestore(dev->host_lock, flags);
+
+	/* First, we handle error conditions */
+	if(int_reg & SCI)         /* SCSI Reset */
+	{
+		printk(KERN_DEBUG "sym53c416: Reset received\n");
+		current_command->SCp.phase = idle;
+		current_command->result = DID_RESET << 16;
+		spin_lock_irqsave(dev->host_lock, flags);
+		current_command->scsi_done(current_command);
+		spin_unlock_irqrestore(dev->host_lock, flags);
+		goto out;
+	}
+	if(int_reg & ILCMD)       /* Illegal Command */
+	{
+		printk(KERN_WARNING "sym53c416: Illegal Command: 0x%02x.\n", inb(base + COMMAND_REG));
+		current_command->SCp.phase = idle;
+		current_command->result = DID_ERROR << 16;
+		spin_lock_irqsave(dev->host_lock, flags);
+		current_command->scsi_done(current_command);
+		spin_unlock_irqrestore(dev->host_lock, flags);
+		goto out;
+	}
+	if(status_reg & GE)         /* Gross Error */
+	{
+		printk(KERN_WARNING "sym53c416: Controller reports gross error.\n");
+		current_command->SCp.phase = idle;
+		current_command->result = DID_ERROR << 16;
+		spin_lock_irqsave(dev->host_lock, flags);
+		current_command->scsi_done(current_command);
+		spin_unlock_irqrestore(dev->host_lock, flags);
+		goto out;
+	}
+	if(status_reg & PE)         /* Parity Error */
+	{
+		printk(KERN_WARNING "sym53c416:SCSI parity error.\n");
+		current_command->SCp.phase = idle;
+		current_command->result = DID_PARITY << 16;
+		spin_lock_irqsave(dev->host_lock, flags);
+		current_command->scsi_done(current_command);
+		spin_unlock_irqrestore(dev->host_lock, flags);
+		goto out;
+	}
+	if(pio_int_reg & (CE | OUE))
+	{
+		printk(KERN_WARNING "sym53c416: PIO interrupt error.\n");
+		current_command->SCp.phase = idle;
+		current_command->result = DID_ERROR << 16;
+		spin_lock_irqsave(dev->host_lock, flags);
+		current_command->scsi_done(current_command);
+		spin_unlock_irqrestore(dev->host_lock, flags);
+		goto out;
+	}
+	if(int_reg & DIS)           /* Disconnect */
+	{
+		if(current_command->SCp.phase != message_in)
+			current_command->result = DID_NO_CONNECT << 16;
+		else
+			current_command->result = (current_command->SCp.Status & 0xFF) | ((current_command->SCp.Message & 0xFF) << 8) | (DID_OK << 16);
+		current_command->SCp.phase = idle;
+		spin_lock_irqsave(dev->host_lock, flags);
+		current_command->scsi_done(current_command);
+		spin_unlock_irqrestore(dev->host_lock, flags);
+		goto out;
+	}
+	/* Now we handle SCSI phases         */
+
+	switch(status_reg & PHBITS)       /* Filter SCSI phase out of status reg */
+	{
+		case PHASE_DATA_OUT:
+		{
+			if(int_reg & BS)
+			{
+				current_command->SCp.phase = data_out;
+				outb(FLUSH_FIFO, base + COMMAND_REG);
+				sym53c416_set_transfer_counter(base, current_command->request_bufflen);
+				outb(TRANSFER_INFORMATION | PIO_MODE, base + COMMAND_REG);
+				if(!current_command->use_sg)
+					tot_trans = sym53c416_write(base, current_command->request_buffer, current_command->request_bufflen);
+				else
+				{
+					sgcount = current_command->use_sg;
+					sglist = current_command->request_buffer;
+					while(sgcount--)
+					{
+						tot_trans += sym53c416_write(base, SG_ADDRESS(sglist), sglist->length);
+						sglist++;
+					}
+				}
+				if(tot_trans < current_command->underflow)
+					printk(KERN_WARNING "sym53c416: Underflow, wrote %d bytes, request for %d bytes.\n", tot_trans, current_command->underflow);
+			}
+			break;
+		}
+
+		case PHASE_DATA_IN:
+		{
+			if(int_reg & BS)
+			{
+				current_command->SCp.phase = data_in;
+				outb(FLUSH_FIFO, base + COMMAND_REG);
+				sym53c416_set_transfer_counter(base, current_command->request_bufflen);
+				outb(TRANSFER_INFORMATION | PIO_MODE, base + COMMAND_REG);
+				if(!current_command->use_sg)
+					tot_trans = sym53c416_read(base, current_command->request_buffer, current_command->request_bufflen);
+				else
+				{
+					sgcount = current_command->use_sg;
+					sglist = current_command->request_buffer;
+					while(sgcount--)
+					{
+						tot_trans += sym53c416_read(base, SG_ADDRESS(sglist), sglist->length);
+						sglist++;
+					}
+				}
+				if(tot_trans < current_command->underflow)
+					printk(KERN_WARNING "sym53c416: Underflow, read %d bytes, request for %d bytes.\n", tot_trans, current_command->underflow);
+			}
+			break;
+		}
+
+		case PHASE_COMMAND:
+		{
+			current_command->SCp.phase = command_ph;
+			printk(KERN_ERR "sym53c416: Unknown interrupt in command phase.\n");
+			break;
+		}
+
+		case PHASE_STATUS:
+		{
+			current_command->SCp.phase = status_ph;
+			outb(FLUSH_FIFO, base + COMMAND_REG);
+			outb(INIT_COMM_COMPLETE_SEQ, base + COMMAND_REG);
+			break;
+		}
+		
+		case PHASE_RESERVED_1:
+		case PHASE_RESERVED_2:
+		{
+			printk(KERN_ERR "sym53c416: Reserved phase occurred.\n");
+			break;
+		}
+
+		case PHASE_MESSAGE_OUT:
+		{
+			current_command->SCp.phase = message_out;
+			outb(SET_ATN, base + COMMAND_REG);
+			outb(MSG_ACCEPTED, base + COMMAND_REG);
+			break;
+		}
+
+		case PHASE_MESSAGE_IN:
+		{
+			current_command->SCp.phase = message_in;
+			current_command->SCp.Status = inb(base + SCSI_FIFO);
+			current_command->SCp.Message = inb(base + SCSI_FIFO);
+			if(current_command->SCp.Message == SAVE_POINTERS || current_command->SCp.Message == DISCONNECT)
+				outb(SET_ATN, base + COMMAND_REG);
+			outb(MSG_ACCEPTED, base + COMMAND_REG);
+			break;
+		}
+	}
+out:
+	return IRQ_HANDLED;
+}
+
+static void sym53c416_init(int base, int scsi_id)
+{
+	outb(RESET_CHIP, base + COMMAND_REG);
+	outb(NOOP, base + COMMAND_REG);
+	outb(0x99, base + TOM); /* Time out of 250 ms */
+	outb(0x05, base + STP);
+	outb(0x00, base + SYNC_OFFSET);
+	outb(EPC | scsi_id, base + CONF_REG_1);
+	outb(FE | SCSI2 | TBPA, base + CONF_REG_2);
+	outb(IDMRC | QTE | CDB10 | FSCSI | FCLK, base + CONF_REG_3);
+	outb(0x83 | EAN, base + CONF_REG_4);
+	outb(IE | WSE0, base + CONF_REG_5);
+	outb(0, base + FEATURE_EN);
+}
+
+static int sym53c416_probeirq(int base, int scsi_id)
+{
+	int irq, irqs;
+	unsigned long i;
+
+	/* Clear interrupt register */
+	inb(base + INT_REG);
+	/* Start probing for irq's */
+	irqs = probe_irq_on();
+	/* Reinit chip */
+	sym53c416_init(base, scsi_id);
+	/* Cause interrupt */
+	outb(NOOP, base + COMMAND_REG);
+	outb(ILLEGAL, base + COMMAND_REG);
+	outb(0x07, base + DEST_BUS_ID);
+	outb(0x00, base + DEST_BUS_ID);
+	/* Wait for interrupt to occur */
+	i = jiffies + 20;
+	while(time_before(jiffies, i) && !(inb(base + STATUS_REG) & SCI))
+		barrier();
+	if(time_before_eq(i, jiffies))	/* timed out */
+		return 0;
+	/* Get occurred irq */
+	irq = probe_irq_off(irqs);
+	sym53c416_init(base, scsi_id);
+	return irq;
+}
+
+/* Setup: sym53c416=base,irq */
+void sym53c416_setup(char *str, int *ints)
+{
+	int i;
+
+	if(host_index >= MAXHOSTS)
+	{
+		printk(KERN_WARNING "sym53c416: Too many hosts defined\n");
+		return;
+	}
+	if(ints[0] < 1 || ints[0] > 2)
+	{
+		printk(KERN_ERR "sym53c416: Wrong number of parameters:\n");
+		printk(KERN_ERR "sym53c416: usage: sym53c416=<base>[,<irq>]\n");
+		return;
+	}
+	for(i = 0; i < host_index && i >= 0; i++)
+	        if(hosts[i].base == ints[1])
+        		i = -2;
+	if(i >= 0)
+	{
+        	hosts[host_index].base = ints[1];
+        	hosts[host_index].irq = (ints[0] == 2)? ints[2] : 0;
+        	host_index++;
+	}
+}
+
+static int sym53c416_test(int base)
+{
+	outb(RESET_CHIP, base + COMMAND_REG);
+	outb(NOOP, base + COMMAND_REG);
+	if(inb(base + COMMAND_REG) != NOOP)
+		return 0;
+	if(!inb(base + TC_HIGH) || inb(base + TC_HIGH) == 0xFF)
+		return 0;
+	if((inb(base + PIO_INT_REG) & (FULL | EMPTY | CE | OUE | FIE | EIE)) != EMPTY)
+		return 0;
+	return 1;
+}
+
+
+static struct isapnp_device_id id_table[] __devinitdata = {
+	{	ISAPNP_ANY_ID, ISAPNP_ANY_ID,
+		ISAPNP_VENDOR('S','L','I'), ISAPNP_FUNCTION(0x4161), 0 },
+	{	ISAPNP_ANY_ID, ISAPNP_ANY_ID,
+		ISAPNP_VENDOR('S','L','I'), ISAPNP_FUNCTION(0x4163), 0 },
+	{	ISAPNP_DEVICE_SINGLE_END }
+};
+
+MODULE_DEVICE_TABLE(isapnp, id_table);
+
+static void sym53c416_probe(void)
+{
+	int *base = probeaddrs;
+	int ints[2];
+
+	ints[0] = 1;
+	for(; *base; base++) {
+		if (request_region(*base, IO_RANGE, ID)) {
+			if (sym53c416_test(*base)) {
+				ints[1] = *base;
+				sym53c416_setup(NULL, ints);
+			}
+			release_region(*base, IO_RANGE);
+		}
+	}
+}
+
+int __init sym53c416_detect(Scsi_Host_Template *tpnt)
+{
+	unsigned long flags;
+	struct Scsi_Host * shpnt = NULL;
+	int i;
+	int count;
+	struct pnp_dev *idev = NULL;
+	
+#ifdef MODULE
+	int ints[3];
+
+	ints[0] = 2;
+	if(sym53c416_base)
+	{
+		ints[1] = sym53c416_base[0];
+		ints[2] = sym53c416_base[1];
+		sym53c416_setup(NULL, ints);
+	}
+	if(sym53c416_base_1)
+	{
+		ints[1] = sym53c416_base_1[0];
+		ints[2] = sym53c416_base_1[1];
+		sym53c416_setup(NULL, ints);
+	}
+	if(sym53c416_base_2)
+	{
+		ints[1] = sym53c416_base_2[0];
+		ints[2] = sym53c416_base_2[1];
+		sym53c416_setup(NULL, ints);
+	}
+	if(sym53c416_base_3)
+	{
+		ints[1] = sym53c416_base_3[0];
+		ints[2] = sym53c416_base_3[1];
+		sym53c416_setup(NULL, ints);
+	}
+#endif
+	printk(KERN_INFO "sym53c416.c: %s\n", VERSION_STRING);
+
+	for (i=0; id_table[i].vendor != 0; i++) {
+		while((idev=pnp_find_dev(NULL, id_table[i].vendor,
+					id_table[i].function, idev))!=NULL)
+		{
+			int i[3];
+
+			if(pnp_device_attach(idev)<0)
+			{
+				printk(KERN_WARNING "sym53c416: unable to attach PnP device.\n");
+				continue;
+			}
+			if(pnp_activate_dev(idev) < 0)
+			{
+				printk(KERN_WARNING "sym53c416: unable to activate PnP device.\n");
+				pnp_device_detach(idev);
+				continue;
+			
+			}
+
+			i[0] = 2;
+			i[1] = pnp_port_start(idev, 0);
+ 			i[2] = pnp_irq(idev, 0);
+
+			printk(KERN_INFO "sym53c416: ISAPnP card found and configured at 0x%X, IRQ %d.\n",
+				i[1], i[2]);
+ 			sym53c416_setup(NULL, i);
+ 		}
+	}
+	sym53c416_probe();
+
+	/* Now we register and set up each host adapter found... */
+	for(count = 0, i = 0; i < host_index; i++) {
+		if (!request_region(hosts[i].base, IO_RANGE, ID))
+			continue;
+		if (!sym53c416_test(hosts[i].base)) {
+			printk(KERN_WARNING "No sym53c416 found at address 0x%03x\n", hosts[i].base);
+			goto fail_release_region;
+		}
+
+		/* We don't have an irq yet, so we should probe for one */
+		if (!hosts[i].irq)
+			hosts[i].irq = sym53c416_probeirq(hosts[i].base, hosts[i].scsi_id);
+		if (!hosts[i].irq)
+			goto fail_release_region;
+	
+		shpnt = scsi_register(tpnt, 0);
+		if (!shpnt)
+			goto fail_release_region;
+		/* Request for specified IRQ */
+		if (request_irq(hosts[i].irq, sym53c416_intr_handle, 0, ID, shpnt))
+			goto fail_free_host;
+
+		spin_lock_irqsave(&sym53c416_lock, flags);
+		shpnt->unique_id = hosts[i].base;
+		shpnt->io_port = hosts[i].base;
+		shpnt->n_io_port = IO_RANGE;
+		shpnt->irq = hosts[i].irq;
+		shpnt->this_id = hosts[i].scsi_id;
+		sym53c416_init(hosts[i].base, hosts[i].scsi_id);
+		count++;
+		spin_unlock_irqrestore(&sym53c416_lock, flags);
+		continue;
+
+ fail_free_host:
+		scsi_unregister(shpnt);
+ fail_release_region:
+		release_region(hosts[i].base, IO_RANGE);
+	}
+	return count;
+}
+
+const char *sym53c416_info(struct Scsi_Host *SChost)
+{
+	int i;
+	int base = SChost->io_port;
+	int irq = SChost->irq;
+	int scsi_id = 0;
+	int rev = inb(base + TC_HIGH);
+
+	for(i = 0; i < host_index; i++)
+		if(hosts[i].base == base)
+			scsi_id = hosts[i].scsi_id;
+	sprintf(info, "Symbios Logic 53c416 (rev. %d) at 0x%03x, irq %d, SCSI-ID %d, %s pio", rev, base, irq, scsi_id, (fastpio)? "fast" : "slow");
+	return info;
+}
+
+int sym53c416_queuecommand(Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *))
+{
+	int base;
+	unsigned long flags = 0;
+	int i;
+
+	/* Store base register as we can have more than one controller in the system */
+	base = SCpnt->device->host->io_port;
+	current_command = SCpnt;                  /* set current command                */
+	current_command->scsi_done = done;        /* set ptr to done function           */
+	current_command->SCp.phase = command_ph;  /* currect phase is the command phase */
+	current_command->SCp.Status = 0;
+	current_command->SCp.Message = 0;
+
+	spin_lock_irqsave(&sym53c416_lock, flags);
+	outb(SCpnt->device->id, base + DEST_BUS_ID); /* Set scsi id target        */
+	outb(FLUSH_FIFO, base + COMMAND_REG);    /* Flush SCSI and PIO FIFO's */
+	/* Write SCSI command into the SCSI fifo */
+	for(i = 0; i < SCpnt->cmd_len; i++)
+		outb(SCpnt->cmnd[i], base + SCSI_FIFO);
+	/* Start selection sequence */
+	outb(SEL_WITHOUT_ATN_SEQ, base + COMMAND_REG);
+	/* Now an interrupt will be generated which we will catch in out interrupt routine */
+	spin_unlock_irqrestore(&sym53c416_lock, flags);
+	return 0;
+}
+
+static int sym53c416_abort(Scsi_Cmnd *SCpnt)
+{
+	return FAILED;
+}
+
+static int sym53c416_bus_reset(Scsi_Cmnd *SCpnt)
+{
+	return FAILED;
+}
+
+static int sym53c416_device_reset(Scsi_Cmnd *SCpnt)
+{
+	return FAILED;
+}
+
+static int sym53c416_host_reset(Scsi_Cmnd *SCpnt)
+{
+	int base;
+	int scsi_id = -1;	
+	int i;
+
+	/* printk("sym53c416_reset\n"); */
+	base = SCpnt->device->host->io_port;
+	/* search scsi_id - fixme, we shouldnt need to iterate for this! */
+	for(i = 0; i < host_index && scsi_id != -1; i++)
+		if(hosts[i].base == base)
+			scsi_id = hosts[i].scsi_id;
+	outb(RESET_CHIP, base + COMMAND_REG);
+	outb(NOOP | PIO_MODE, base + COMMAND_REG);
+	outb(RESET_SCSI_BUS, base + COMMAND_REG);
+	sym53c416_init(base, scsi_id);
+	return SUCCESS;
+}
+
+static int sym53c416_release(struct Scsi_Host *shost)
+{
+	if (shost->irq)
+		free_irq(shost->irq, shost);
+	if (shost->io_port && shost->n_io_port)
+		release_region(shost->io_port, shost->n_io_port);
+	return 0;
+}
+
+static int sym53c416_bios_param(struct scsi_device *sdev,
+		struct block_device *dev,
+		sector_t capacity, int *ip)
+{
+	int size;
+
+	size = capacity;
+	ip[0] = 64;				/* heads                        */
+	ip[1] = 32;				/* sectors                      */
+	if((ip[2] = size >> 11) > 1024)		/* cylinders, test for big disk */
+	{
+		ip[0] = 255;			/* heads                        */
+		ip[1] = 63;			/* sectors                      */
+		ip[2] = size / (255 * 63);	/* cylinders                    */
+	}
+	return 0;
+}
+
+/* Loadable module support */
+#ifdef MODULE
+
+MODULE_AUTHOR("Lieven Willems");
+MODULE_LICENSE("GPL");
+
+module_param_array(sym53c416, uint, NULL, 0);
+module_param_array(sym53c416_1, uint, NULL, 0);
+module_param_array(sym53c416_2, uint, NULL, 0);
+module_param_array(sym53c416_3, uint, NULL, 0);
+
+#endif
+
+static Scsi_Host_Template driver_template = {
+	.proc_name =		"sym53c416",
+	.name =			"Symbios Logic 53c416",
+	.detect =		sym53c416_detect,
+	.info =			sym53c416_info,	
+	.queuecommand =		sym53c416_queuecommand,
+	.eh_abort_handler =	sym53c416_abort,
+	.eh_host_reset_handler =sym53c416_host_reset,
+	.eh_bus_reset_handler = sym53c416_bus_reset,
+	.eh_device_reset_handler =sym53c416_device_reset,
+	.release = 		sym53c416_release,
+	.bios_param =		sym53c416_bios_param,
+	.can_queue =		1,
+	.this_id =		SYM53C416_SCSI_ID,
+	.sg_tablesize =		32,
+	.cmd_per_lun =		1,
+	.unchecked_isa_dma =	1,
+	.use_clustering =	ENABLE_CLUSTERING,
+};
+#include "scsi_module.c"