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, 2318 insertions, 0 deletions

diff --git a/drivers/net/wan/sdladrv.c b/drivers/net/wan/sdladrv.c
new file mode 100644
index 000000000000..c8bc6da57a41
--- /dev/null
+++ b/drivers/net/wan/sdladrv.c
@@ -0,0 +1,2318 @@
+/*****************************************************************************
+* sdladrv.c	SDLA Support Module.  Main module.
+*
+*		This module is a library of common hardware-specific functions
+*		used by all Sangoma drivers.
+*
+* Author:	Gideon Hack	
+*
+* Copyright:	(c) 1995-2000 Sangoma Technologies Inc.
+*
+*		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.
+* ============================================================================
+* Mar 20, 2001  Nenad Corbic	Added the auto_pci_cfg filed, to support
+*                               the PCISLOT #0. 
+* Apr 04, 2000  Nenad Corbic	Fixed the auto memory detection code.
+*                               The memory test at address 0xC8000.
+* Mar 09, 2000  Nenad Corbic 	Added Gideon's Bug Fix: clear pci
+*                               interrupt flags on initial load.
+* Jun 02, 1999  Gideon Hack     Added support for the S514 adapter.
+*				Updates for Linux 2.2.X kernels.	
+* Sep 17, 1998	Jaspreet Singh	Updates for linux 2.2.X kernels
+* Dec 20, 1996	Gene Kozin	Version 3.0.0. Complete overhaul.
+* Jul 12, 1996	Gene Kozin	Changes for Linux 2.0 compatibility.
+* Jun 12, 1996	Gene Kozin 	Added support for S503 card.
+* Apr 30, 1996	Gene Kozin	SDLA hardware interrupt is acknowledged before
+*				calling protocolspecific ISR.
+*				Register I/O ports with Linux kernel.
+*				Miscellaneous bug fixes.
+* Dec 20, 1995	Gene Kozin	Fixed a bug in interrupt routine.
+* Oct 14, 1995	Gene Kozin	Initial version.
+*****************************************************************************/
+
+/*****************************************************************************
+ * Notes:
+ * ------
+ * 1. This code is ment to be system-independent (as much as possible).  To
+ *    achive this, various macros are used to hide system-specific interfaces.
+ *    To compile this code, one of the following constants must be defined:
+ *
+ *	Platform	Define
+ *	--------	------
+ *	Linux		_LINUX_
+ *	SCO Unix	_SCO_UNIX_
+ *
+ * 2. Supported adapter types:
+ *
+ *	S502A
+ *	ES502A (S502E)
+ *	S503
+ *	S507
+ *	S508 (S509)
+ *
+ * 3. S502A Notes:
+ *
+ *	There is no separate DPM window enable/disable control in S502A.  It
+ *	opens immediately after a window number it written to the HMCR
+ *	register.  To close the window, HMCR has to be written a value
+ *	????1111b (e.g. 0x0F or 0xFF).
+ *
+ *	S502A DPM window cannot be located at offset E000 (e.g. 0xAE000).
+ *
+ *	There should be a delay of ??? before reading back S502A status
+ *	register.
+ *
+ * 4. S502E Notes:
+ *
+ *	S502E has a h/w bug: although default IRQ line state is HIGH, enabling
+ *	interrupts by setting bit 1 of the control register (BASE) to '1'
+ *	causes it to go LOW! Therefore, disabling interrupts by setting that
+ *	bit to '0' causes low-to-high transition on IRQ line (ghosty
+ *	interrupt). The same occurs when disabling CPU by resetting bit 0 of
+ *	CPU control register (BASE+3) - see the next note.
+ *
+ *	S502E CPU and DPM control is limited:
+ *
+ *	o CPU cannot be stopped independently. Resetting bit 0 of the CPUi
+ *	  control register (BASE+3) shuts the board down entirely, including
+ *	  DPM;
+ *
+ *	o DPM access cannot be controlled dynamically. Ones CPU is started,
+ *	  bit 1 of the control register (BASE) is used to enable/disable IRQ,
+ *	  so that access to shared memory cannot be disabled while CPU is
+ *	  running.
+ ****************************************************************************/
+
+#define	_LINUX_
+
+#if	defined(_LINUX_)	/****** Linux *******************************/
+
+#include <linux/config.h>
+#include <linux/kernel.h>	/* printk(), and other useful stuff */
+#include <linux/stddef.h>	/* offsetof(), etc. */
+#include <linux/errno.h>	/* return codes */
+#include <linux/string.h>	/* inline memset(), etc. */
+#include <linux/module.h>	/* support for loadable modules */
+#include <linux/jiffies.h>	/* for jiffies, HZ, etc. */
+#include <linux/sdladrv.h>	/* API definitions */
+#include <linux/sdlasfm.h>	/* SDLA firmware module definitions */
+#include <linux/sdlapci.h>	/* SDLA PCI hardware definitions */
+#include <linux/pci.h>		/* PCI defines and function prototypes */
+#include <asm/io.h>		/* for inb(), outb(), etc. */
+
+#define _INB(port)		(inb(port))
+#define _OUTB(port, byte)	(outb((byte),(port)))
+#define	SYSTEM_TICK		jiffies
+
+#include <linux/init.h>
+
+
+#elif	defined(_SCO_UNIX_)	/****** SCO Unix ****************************/
+
+#if	!defined(INKERNEL)
+#error	This code MUST be compiled in kernel mode!
+#endif
+#include <sys/sdladrv.h>	/* API definitions */
+#include <sys/sdlasfm.h>	/* SDLA firmware module definitions */
+#include <sys/inline.h>		/* for inb(), outb(), etc. */
+#define _INB(port)		(inb(port))
+#define _OUTB(port, byte)	(outb((port),(byte)))
+#define	SYSTEM_TICK		lbolt
+
+#else
+#error	Unknown system type!
+#endif
+
+#define	MOD_VERSION	3
+#define	MOD_RELEASE	0
+
+#define	SDLA_IODELAY	100	/* I/O Rd/Wr delay, 10 works for 486DX2-66 */
+#define	EXEC_DELAY	20	/* shared memory access delay, mks */
+#define	EXEC_TIMEOUT	(HZ*2)	/* command timeout, in ticks */
+
+/* I/O port address range */
+#define S502A_IORANGE	3
+#define S502E_IORANGE	4
+#define S503_IORANGE	3
+#define S507_IORANGE	4
+#define S508_IORANGE	4
+
+/* Maximum amount of memory */
+#define S502_MAXMEM	0x10000L
+#define S503_MAXMEM	0x10000L
+#define S507_MAXMEM	0x40000L
+#define S508_MAXMEM	0x40000L
+
+/* Minimum amount of memory */
+#define S502_MINMEM	0x8000L
+#define S503_MINMEM	0x8000L
+#define S507_MINMEM	0x20000L
+#define S508_MINMEM	0x20000L
+#define NO_PORT         -1
+
+
+
+
+
+/****** Function Prototypes *************************************************/
+
+/* Hardware-specific functions */
+static int sdla_detect	(sdlahw_t* hw);
+static int sdla_autodpm	(sdlahw_t* hw);
+static int sdla_setdpm	(sdlahw_t* hw);
+static int sdla_load	(sdlahw_t* hw, sfm_t* sfm, unsigned len);
+static int sdla_init	(sdlahw_t* hw);
+static unsigned long sdla_memtest (sdlahw_t* hw);
+static int sdla_bootcfg	(sdlahw_t* hw, sfm_info_t* sfminfo);
+static unsigned char make_config_byte (sdlahw_t* hw);
+static int sdla_start	(sdlahw_t* hw, unsigned addr);
+
+static int init_s502a	(sdlahw_t* hw);
+static int init_s502e	(sdlahw_t* hw);
+static int init_s503	(sdlahw_t* hw);
+static int init_s507	(sdlahw_t* hw);
+static int init_s508	(sdlahw_t* hw);
+            
+static int detect_s502a	(int port);
+static int detect_s502e	(int port);
+static int detect_s503	(int port);
+static int detect_s507	(int port);
+static int detect_s508	(int port);
+static int detect_s514  (sdlahw_t* hw);
+static int find_s514_adapter(sdlahw_t* hw, char find_first_S514_card);
+
+/* Miscellaneous functions */
+static void peek_by_4 (unsigned long src, void* buf, unsigned len);
+static void poke_by_4 (unsigned long dest, void* buf, unsigned len);
+static int calibrate_delay (int mks);
+static int get_option_index (unsigned* optlist, unsigned optval);
+static unsigned check_memregion (void* ptr, unsigned len);
+static unsigned	test_memregion (void* ptr, unsigned len);
+static unsigned short checksum (unsigned char* buf, unsigned len);
+static int init_pci_slot(sdlahw_t *);
+
+static int pci_probe(sdlahw_t *hw);
+
+/****** Global Data **********************************************************
+ * Note: All data must be explicitly initialized!!!
+ */
+
+static struct pci_device_id sdladrv_pci_tbl[] = {
+	{ V3_VENDOR_ID, V3_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID, },
+	{ }			/* Terminating entry */
+};
+MODULE_DEVICE_TABLE(pci, sdladrv_pci_tbl);
+
+MODULE_LICENSE("GPL");
+
+/* private data */
+static char modname[]	= "sdladrv";
+static char fullname[]	= "SDLA Support Module";
+static char copyright[]	= "(c) 1995-1999 Sangoma Technologies Inc.";
+static unsigned	exec_idle;
+
+/* Hardware configuration options.
+ * These are arrays of configuration options used by verification routines.
+ * The first element of each array is its size (i.e. number of options).
+ */
+static unsigned	s502_port_options[] =
+	{ 4, 0x250, 0x300, 0x350, 0x360 }
+;
+static unsigned	s503_port_options[] =
+	{ 8, 0x250, 0x254, 0x300, 0x304, 0x350, 0x354, 0x360, 0x364 }
+;
+static unsigned	s508_port_options[] =
+	{ 8, 0x250, 0x270, 0x280, 0x300, 0x350, 0x360, 0x380, 0x390 }
+;
+
+static unsigned s502a_irq_options[] = { 0 };
+static unsigned s502e_irq_options[] = { 4, 2, 3, 5, 7 };
+static unsigned s503_irq_options[]  = { 5, 2, 3, 4, 5, 7 };
+static unsigned s508_irq_options[]  = { 8, 3, 4, 5, 7, 10, 11, 12, 15 };
+
+static unsigned s502a_dpmbase_options[] =
+{
+	28,
+	0xA0000, 0xA2000, 0xA4000, 0xA6000, 0xA8000, 0xAA000, 0xAC000,
+	0xC0000, 0xC2000, 0xC4000, 0xC6000, 0xC8000, 0xCA000, 0xCC000,
+	0xD0000, 0xD2000, 0xD4000, 0xD6000, 0xD8000, 0xDA000, 0xDC000,
+	0xE0000, 0xE2000, 0xE4000, 0xE6000, 0xE8000, 0xEA000, 0xEC000,
+};
+static unsigned s507_dpmbase_options[] =
+{
+	32,
+	0xA0000, 0xA2000, 0xA4000, 0xA6000, 0xA8000, 0xAA000, 0xAC000, 0xAE000,
+	0xB0000, 0xB2000, 0xB4000, 0xB6000, 0xB8000, 0xBA000, 0xBC000, 0xBE000,
+	0xC0000, 0xC2000, 0xC4000, 0xC6000, 0xC8000, 0xCA000, 0xCC000, 0xCE000,
+	0xE0000, 0xE2000, 0xE4000, 0xE6000, 0xE8000, 0xEA000, 0xEC000, 0xEE000,
+};
+static unsigned s508_dpmbase_options[] =	/* incl. S502E and S503 */
+{
+	32,
+	0xA0000, 0xA2000, 0xA4000, 0xA6000, 0xA8000, 0xAA000, 0xAC000, 0xAE000,
+	0xC0000, 0xC2000, 0xC4000, 0xC6000, 0xC8000, 0xCA000, 0xCC000, 0xCE000,
+	0xD0000, 0xD2000, 0xD4000, 0xD6000, 0xD8000, 0xDA000, 0xDC000, 0xDE000,
+	0xE0000, 0xE2000, 0xE4000, 0xE6000, 0xE8000, 0xEA000, 0xEC000, 0xEE000,
+};
+
+/*
+static unsigned	s502_dpmsize_options[] = { 2, 0x2000, 0x10000 };
+static unsigned	s507_dpmsize_options[] = { 2, 0x2000, 0x4000 };
+static unsigned	s508_dpmsize_options[] = { 1, 0x2000 };
+*/
+
+static unsigned	s502a_pclk_options[] = { 2, 3600, 7200 };
+static unsigned	s502e_pclk_options[] = { 5, 3600, 5000, 7200, 8000, 10000 };
+static unsigned	s503_pclk_options[]  = { 3, 7200, 8000, 10000 };
+static unsigned	s507_pclk_options[]  = { 1, 12288 };
+static unsigned	s508_pclk_options[]  = { 1, 16000 };
+
+/* Host memory control register masks */
+static unsigned char s502a_hmcr[] =
+{
+	0x10, 0x12, 0x14, 0x16, 0x18, 0x1A, 0x1C,	/* A0000 - AC000 */
+	0x20, 0x22, 0x24, 0x26, 0x28, 0x2A, 0x2C,	/* C0000 - CC000 */
+	0x00, 0x02, 0x04, 0x06, 0x08, 0x0A, 0x0C,	/* D0000 - DC000 */
+	0x30, 0x32, 0x34, 0x36, 0x38, 0x3A, 0x3C,	/* E0000 - EC000 */
+};
+static unsigned char s502e_hmcr[] =
+{
+	0x10, 0x12, 0x14, 0x16, 0x18, 0x1A, 0x1C, 0x1E,	/* A0000 - AE000 */
+	0x20, 0x22, 0x24, 0x26, 0x28, 0x2A, 0x2C, 0x2E,	/* C0000 - CE000 */
+	0x00, 0x02, 0x04, 0x06, 0x08, 0x0A, 0x0C, 0x0E,	/* D0000 - DE000 */
+	0x30, 0x32, 0x34, 0x36, 0x38, 0x3A, 0x3C, 0x3E,	/* E0000 - EE000 */
+};
+static unsigned char s507_hmcr[] =
+{
+	0x00, 0x02, 0x04, 0x06, 0x08, 0x0A, 0x0C, 0x0E,	/* A0000 - AE000 */
+	0x40, 0x42, 0x44, 0x46, 0x48, 0x4A, 0x4C, 0x4E,	/* B0000 - BE000 */
+	0x80, 0x82, 0x84, 0x86, 0x88, 0x8A, 0x8C, 0x8E,	/* C0000 - CE000 */
+	0xC0, 0xC2, 0xC4, 0xC6, 0xC8, 0xCA, 0xCC, 0xCE,	/* E0000 - EE000 */
+};
+static unsigned char s508_hmcr[] =
+{
+	0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,	/* A0000 - AE000 */
+	0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,	/* C0000 - CE000 */
+	0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,	/* D0000 - DE000 */
+	0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F,	/* E0000 - EE000 */
+};
+
+static unsigned char s507_irqmask[] =
+{
+	0x00, 0x20, 0x40, 0x60, 0x80, 0xA0, 0xC0, 0xE0
+};
+
+static int pci_slot_ar[MAX_S514_CARDS];
+
+/******* Kernel Loadable Module Entry Points ********************************/
+
+/*============================================================================
+ * Module 'insert' entry point.
+ * o print announcement
+ * o initialize static data
+ * o calibrate SDLA shared memory access delay.
+ *
+ * Return:	0	Ok
+ *		< 0	error.
+ * Context:	process
+ */
+
+static int __init sdladrv_init(void)
+{
+	int i=0;
+
+	printk(KERN_INFO "%s v%u.%u %s\n",
+		fullname, MOD_VERSION, MOD_RELEASE, copyright);
+	exec_idle = calibrate_delay(EXEC_DELAY);
+#ifdef WANDEBUG	
+	printk(KERN_DEBUG "%s: exec_idle = %d\n", modname, exec_idle);
+#endif	
+
+	/* Initialize the PCI Card array, which
+         * will store flags, used to mark 
+         * card initialization state */
+	for (i=0; i<MAX_S514_CARDS; i++)
+		pci_slot_ar[i] = 0xFF;
+
+	return 0;
+}
+
+/*============================================================================
+ * Module 'remove' entry point.
+ * o release all remaining system resources
+ */
+static void __exit sdladrv_cleanup(void)
+{
+}
+
+module_init(sdladrv_init);
+module_exit(sdladrv_cleanup);
+
+/******* Kernel APIs ********************************************************/
+
+/*============================================================================
+ * Set up adapter.
+ * o detect adapter type
+ * o verify hardware configuration options
+ * o check for hardware conflicts
+ * o set up adapter shared memory
+ * o test adapter memory
+ * o load firmware
+ * Return:	0	ok.
+ *		< 0	error
+ */
+
+EXPORT_SYMBOL(sdla_setup);
+
+int sdla_setup (sdlahw_t* hw, void* sfm, unsigned len)
+{
+	unsigned* irq_opt	= NULL;	/* IRQ options */
+	unsigned* dpmbase_opt	= NULL;	/* DPM window base options */
+	unsigned* pclk_opt	= NULL;	/* CPU clock rate options */
+	int err=0;
+
+	if (sdla_detect(hw)) {
+                if(hw->type != SDLA_S514)
+                        printk(KERN_INFO "%s: no SDLA card found at port 0x%X\n",
+                        modname, hw->port);
+		return -EINVAL;
+	}
+
+	if(hw->type != SDLA_S514) {
+                printk(KERN_INFO "%s: found S%04u card at port 0x%X.\n",
+                modname, hw->type, hw->port);
+
+                hw->dpmsize = SDLA_WINDOWSIZE;
+                switch (hw->type) {
+                case SDLA_S502A:
+                        hw->io_range    = S502A_IORANGE;
+                        irq_opt         = s502a_irq_options;
+                        dpmbase_opt     = s502a_dpmbase_options;
+                        pclk_opt        = s502a_pclk_options;
+                        break;
+
+                case SDLA_S502E:
+                        hw->io_range    = S502E_IORANGE;
+                        irq_opt         = s502e_irq_options;
+                        dpmbase_opt     = s508_dpmbase_options;
+                        pclk_opt        = s502e_pclk_options;
+                        break;
+
+                case SDLA_S503:
+                        hw->io_range    = S503_IORANGE;
+                        irq_opt         = s503_irq_options;
+                        dpmbase_opt     = s508_dpmbase_options;
+                        pclk_opt        = s503_pclk_options;
+                        break;
+
+                case SDLA_S507:
+                        hw->io_range    = S507_IORANGE;
+                        irq_opt         = s508_irq_options;
+                        dpmbase_opt     = s507_dpmbase_options;
+                        pclk_opt        = s507_pclk_options;
+                        break;
+
+                case SDLA_S508:
+                        hw->io_range    = S508_IORANGE;
+                        irq_opt         = s508_irq_options;
+                        dpmbase_opt     = s508_dpmbase_options;
+                        pclk_opt        = s508_pclk_options;
+                        break;
+                }
+
+                /* Verify IRQ configuration options */
+                if (!get_option_index(irq_opt, hw->irq)) {
+                        printk(KERN_INFO "%s: IRQ %d is invalid!\n",
+                        	modname, hw->irq);
+                      return -EINVAL;
+                } 
+
+                /* Verify CPU clock rate configuration options */
+                if (hw->pclk == 0)
+                        hw->pclk = pclk_opt[1];  /* use default */
+        
+                else if (!get_option_index(pclk_opt, hw->pclk)) {
+                        printk(KERN_INFO "%s: CPU clock %u is invalid!\n",
+				modname, hw->pclk);
+                        return -EINVAL;
+                } 
+                printk(KERN_INFO "%s: assuming CPU clock rate of %u kHz.\n",
+			modname, hw->pclk);
+
+                /* Setup adapter dual-port memory window and test memory */
+                if (hw->dpmbase == 0) {
+                        err = sdla_autodpm(hw);
+                        if (err) {
+                                printk(KERN_INFO
+				"%s: can't find available memory region!\n",
+					modname);
+                                return err;
+                        }
+                }
+                else if (!get_option_index(dpmbase_opt,
+			virt_to_phys(hw->dpmbase))) {
+                        printk(KERN_INFO
+				"%s: memory address 0x%lX is invalid!\n",
+				modname, virt_to_phys(hw->dpmbase));
+                        return -EINVAL;
+                }               
+                else if (sdla_setdpm(hw)) {
+                        printk(KERN_INFO
+			"%s: 8K memory region at 0x%lX is not available!\n",
+				modname, virt_to_phys(hw->dpmbase));
+                        return -EINVAL;
+                } 
+                printk(KERN_INFO
+			"%s: dual-port memory window is set at 0x%lX.\n",
+				modname, virt_to_phys(hw->dpmbase));
+
+
+		/* If we find memory in 0xE**** Memory region, 
+                 * warn the user to disable the SHADOW RAM.  
+                 * Since memory corruption can occur if SHADOW is
+                 * enabled. This can causes random crashes ! */
+		if (virt_to_phys(hw->dpmbase) >= 0xE0000){
+			printk(KERN_WARNING "\n%s: !!!!!!!!  WARNING !!!!!!!!\n",modname);
+			printk(KERN_WARNING "%s: WANPIPE is using 0x%lX memory region !!!\n",
+						modname, virt_to_phys(hw->dpmbase));
+			printk(KERN_WARNING "         Please disable the SHADOW RAM, otherwise\n");
+			printk(KERN_WARNING "         your system might crash randomly from time to time !\n");
+			printk(KERN_WARNING "%s: !!!!!!!!  WARNING !!!!!!!!\n\n",modname);
+		}
+        }
+
+	else {
+		hw->memory = test_memregion((void*)hw->dpmbase, 
+			MAX_SIZEOF_S514_MEMORY);
+		if(hw->memory < (256 * 1024)) {
+			printk(KERN_INFO
+				"%s: error in testing S514 memory (0x%lX)\n",
+				modname, hw->memory);
+			sdla_down(hw);
+			return -EINVAL;
+		}
+	}
+    
+	printk(KERN_INFO "%s: found %luK bytes of on-board memory\n",
+		modname, hw->memory / 1024);
+
+	/* Load firmware. If loader fails then shut down adapter */
+	err = sdla_load(hw, sfm, len);
+	if (err) sdla_down(hw);		/* shutdown adapter */
+
+	return err;
+} 
+
+/*============================================================================
+ * Shut down SDLA: disable shared memory access and interrupts, stop CPU, etc.
+ */
+
+EXPORT_SYMBOL(sdla_down);
+
+int sdla_down (sdlahw_t* hw)
+{
+	unsigned port = hw->port;
+	int i;
+        unsigned char CPU_no;
+        u32 int_config, int_status;
+
+        if(!port && (hw->type != SDLA_S514))
+                return -EFAULT;
+
+	switch (hw->type) {
+	case SDLA_S502A:
+		_OUTB(port, 0x08);		/* halt CPU */
+		_OUTB(port, 0x08);
+		_OUTB(port, 0x08);
+		hw->regs[0] = 0x08;
+		_OUTB(port + 1, 0xFF);		/* close memory window */
+		hw->regs[1] = 0xFF;
+		break;
+
+	case SDLA_S502E:
+		_OUTB(port + 3, 0);		/* stop CPU */
+		_OUTB(port, 0);			/* reset board */
+		for (i = 0; i < S502E_IORANGE; ++i)
+			hw->regs[i] = 0
+		;
+		break;
+
+	case SDLA_S503:
+	case SDLA_S507:
+	case SDLA_S508:
+		_OUTB(port, 0);			/* reset board logic */
+		hw->regs[0] = 0;
+		break;
+
+	case SDLA_S514:
+		/* halt the adapter */
+                *(char *)hw->vector = S514_CPU_HALT;
+        	CPU_no = hw->S514_cpu_no[0];
+
+		/* disable the PCI IRQ and disable memory access */
+                pci_read_config_dword(hw->pci_dev, PCI_INT_CONFIG, &int_config);
+	        int_config &= (CPU_no == S514_CPU_A) ? ~PCI_DISABLE_IRQ_CPU_A :	~PCI_DISABLE_IRQ_CPU_B;
+                pci_write_config_dword(hw->pci_dev, PCI_INT_CONFIG, int_config);
+		read_S514_int_stat(hw, &int_status);
+		S514_intack(hw, int_status);
+		if(CPU_no == S514_CPU_A)
+                        pci_write_config_dword(hw->pci_dev, PCI_MAP0_DWORD,
+				PCI_CPU_A_MEM_DISABLE);
+		else
+                        pci_write_config_dword(hw->pci_dev, PCI_MAP1_DWORD,
+				PCI_CPU_B_MEM_DISABLE);
+
+		/* free up the allocated virtual memory */
+ 		iounmap((void *)hw->dpmbase);
+        	iounmap((void *)hw->vector);
+ 		break;
+
+
+	default:
+		return -EINVAL;
+	}
+	return 0;
+}
+
+/*============================================================================
+ * Map shared memory window into SDLA address space.
+ */
+
+EXPORT_SYMBOL(sdla_mapmem);
+
+int sdla_mapmem (sdlahw_t* hw, unsigned long addr)
+{
+	unsigned port = hw->port;
+	register int tmp;
+
+	switch (hw->type) {
+	case SDLA_S502A:
+	case SDLA_S502E:
+		if (addr < S502_MAXMEM)	{ /* verify parameter */
+			tmp = addr >> 13;	/* convert to register mask */
+			_OUTB(port + 2, tmp);
+			hw->regs[2] = tmp;
+		}
+		else return -EINVAL;
+		break;
+
+	case SDLA_S503:
+		if (addr < S503_MAXMEM)	{ /* verify parameter */
+			tmp = (hw->regs[0] & 0x8F) | ((addr >> 9) & 0x70);
+			_OUTB(port, tmp);
+			hw->regs[0] = tmp;
+		}
+		else return -EINVAL;
+		break;
+
+	case SDLA_S507:
+		if (addr < S507_MAXMEM) {
+			if (!(_INB(port) & 0x02))
+				return -EIO;
+			tmp = addr >> 13;	/* convert to register mask */
+			_OUTB(port + 2, tmp);
+			hw->regs[2] = tmp;
+		}
+		else return -EINVAL;
+		break;
+
+	case SDLA_S508:
+		if (addr < S508_MAXMEM) {
+			tmp = addr >> 13;	/* convert to register mask */
+			_OUTB(port + 2, tmp);
+			hw->regs[2] = tmp;
+		}
+		else return -EINVAL;
+		break;
+
+	case SDLA_S514:
+		return 0;
+
+ 	default:
+		return -EINVAL;
+	}
+	hw->vector = addr & 0xFFFFE000L;
+	return 0;
+}
+
+/*============================================================================
+ * Enable interrupt generation.
+ */
+
+EXPORT_SYMBOL(sdla_inten);
+
+int sdla_inten (sdlahw_t* hw)
+{
+	unsigned port = hw->port;
+	int tmp, i;
+
+	switch (hw->type) {
+	case SDLA_S502E:
+		/* Note thar interrupt control operations on S502E are allowed
+		 * only if CPU is enabled (bit 0 of status register is set).
+		 */
+		if (_INB(port) & 0x01) {
+			_OUTB(port, 0x02);	/* bit1 = 1, bit2 = 0 */
+			_OUTB(port, 0x06);	/* bit1 = 1, bit2 = 1 */
+			hw->regs[0] = 0x06;
+		}
+		else return -EIO;
+		break;
+
+	case SDLA_S503:
+		tmp = hw->regs[0] | 0x04;
+		_OUTB(port, tmp);
+		hw->regs[0] = tmp;		/* update mirror */
+		for (i = 0; i < SDLA_IODELAY; ++i);	/* delay */
+		if (!(_INB(port) & 0x02))		/* verify */
+			return -EIO;
+		break;
+
+	case SDLA_S508:
+		tmp = hw->regs[0] | 0x10;
+		_OUTB(port, tmp);
+		hw->regs[0] = tmp;		/* update mirror */
+		for (i = 0; i < SDLA_IODELAY; ++i);	/* delay */
+		if (!(_INB(port + 1) & 0x10))		/* verify */
+			return -EIO;
+		break;
+
+	case SDLA_S502A:
+	case SDLA_S507:
+		break;
+
+        case SDLA_S514:
+                break;
+
+	default:
+		return -EINVAL;
+
+	}
+	return 0;
+}
+
+/*============================================================================
+ * Disable interrupt generation.
+ */
+
+EXPORT_SYMBOL(sdla_intde);
+
+int sdla_intde (sdlahw_t* hw)
+{
+	unsigned port = hw->port;
+	int tmp, i;
+
+	switch (hw->type) {
+	case SDLA_S502E:
+		/* Notes:
+		 *  1) interrupt control operations are allowed only if CPU is
+		 *     enabled (bit 0 of status register is set).
+		 *  2) disabling interrupts using bit 1 of control register
+		 *     causes IRQ line go high, therefore we are going to use
+		 *     0x04 instead: lower it to inhibit interrupts to PC.
+		 */
+		if (_INB(port) & 0x01) {
+			_OUTB(port, hw->regs[0] & ~0x04);
+			hw->regs[0] &= ~0x04;
+		}
+		else return -EIO;
+		break;
+
+	case SDLA_S503:
+		tmp = hw->regs[0] & ~0x04;
+		_OUTB(port, tmp);
+		hw->regs[0] = tmp;			/* update mirror */
+		for (i = 0; i < SDLA_IODELAY; ++i);	/* delay */
+		if (_INB(port) & 0x02)			/* verify */
+			return -EIO;
+		break;
+
+	case SDLA_S508:
+		tmp = hw->regs[0] & ~0x10;
+		_OUTB(port, tmp);
+		hw->regs[0] = tmp;			/* update mirror */
+		for (i = 0; i < SDLA_IODELAY; ++i);	/* delay */
+		if (_INB(port) & 0x10)			/* verify */
+			return -EIO;
+		break;
+
+	case SDLA_S502A:
+	case SDLA_S507:
+		break;
+
+	default:
+		return -EINVAL;
+	}
+	return 0;
+}
+
+/*============================================================================
+ * Acknowledge SDLA hardware interrupt.
+ */
+
+EXPORT_SYMBOL(sdla_intack);
+
+int sdla_intack (sdlahw_t* hw)
+{
+	unsigned port = hw->port;
+	int tmp;
+
+	switch (hw->type) {
+	case SDLA_S502E:
+		/* To acknoledge hardware interrupt we have to toggle bit 3 of
+		 * control register: \_/
+		 * Note that interrupt control operations on S502E are allowed
+		 * only if CPU is enabled (bit 1 of status register is set).
+		 */
+		if (_INB(port) & 0x01) {
+			tmp = hw->regs[0] & ~0x04;
+			_OUTB(port, tmp);
+			tmp |= 0x04;
+			_OUTB(port, tmp);
+			hw->regs[0] = tmp;
+		}
+		else return -EIO;
+		break;
+
+	case SDLA_S503:
+		if (_INB(port) & 0x04) {
+			tmp = hw->regs[0] & ~0x08;
+			_OUTB(port, tmp);
+			tmp |= 0x08;
+			_OUTB(port, tmp);
+			hw->regs[0] = tmp;
+		}
+		break;
+
+	case SDLA_S502A:
+	case SDLA_S507:
+	case SDLA_S508:
+	break;
+
+	default:
+		return -EINVAL;
+	}
+	return 0;
+}
+
+
+/*============================================================================
+ * Acknowledge S514 hardware interrupt.
+ */
+
+EXPORT_SYMBOL(S514_intack);
+
+void S514_intack (sdlahw_t* hw, u32 int_status)
+{
+        pci_write_config_dword(hw->pci_dev, PCI_INT_STATUS, int_status);
+}
+
+
+/*============================================================================
+ * Read the S514 hardware interrupt status.
+ */
+
+EXPORT_SYMBOL(read_S514_int_stat);
+
+void read_S514_int_stat (sdlahw_t* hw, u32* int_status)
+{
+	pci_read_config_dword(hw->pci_dev, PCI_INT_STATUS, int_status);
+}
+
+
+/*============================================================================
+ * Generate an interrupt to adapter's CPU.
+ */
+
+EXPORT_SYMBOL(sdla_intr);
+
+int sdla_intr (sdlahw_t* hw)
+{
+	unsigned port = hw->port;
+
+	switch (hw->type) {
+	case SDLA_S502A:
+		if (!(_INB(port) & 0x40)) {
+			_OUTB(port, 0x10);		/* issue NMI to CPU */
+			hw->regs[0] = 0x10;
+		}
+		else return -EIO;
+		break;
+
+	case SDLA_S507:
+		if ((_INB(port) & 0x06) == 0x06) {
+			_OUTB(port + 3, 0);
+		}
+		else return -EIO;
+		break;
+
+	case SDLA_S508:
+		if (_INB(port + 1) & 0x02) {
+			_OUTB(port, 0x08);
+		}
+		else return -EIO;
+		break;
+
+	case SDLA_S502E:
+	case SDLA_S503:
+	default:
+		return -EINVAL;
+	}
+	return 0;
+}
+
+/*============================================================================
+ * Execute Adapter Command.
+ * o Set exec flag.
+ * o Busy-wait until flag is reset.
+ * o Return number of loops made, or 0 if command timed out.
+ */
+
+EXPORT_SYMBOL(sdla_exec);
+
+int sdla_exec (void* opflag)
+{
+	volatile unsigned char* flag = opflag;
+	unsigned long tstop;
+	int nloops;
+
+	if(readb(flag) != 0x00) {
+		printk(KERN_INFO
+			"WANPIPE: opp flag set on entry to sdla_exec\n");
+		return 0;
+	}
+	
+	writeb(0x01, flag);
+
+	tstop = SYSTEM_TICK + EXEC_TIMEOUT;
+
+	for (nloops = 1; (readb(flag) == 0x01); ++ nloops) {
+		unsigned delay = exec_idle;
+		while (-- delay);			/* delay */
+		if (SYSTEM_TICK > tstop) return 0;	/* time is up! */
+	}
+	return nloops;
+}
+
+/*============================================================================
+ * Read absolute adapter memory.
+ * Transfer data from adapter's memory to data buffer.
+ *
+ * Note:
+ * Care should be taken when crossing dual-port memory window boundary.
+ * This function is not atomic, so caller must disable interrupt if
+ * interrupt routines are accessing adapter shared memory.
+ */
+
+EXPORT_SYMBOL(sdla_peek);
+
+int sdla_peek (sdlahw_t* hw, unsigned long addr, void* buf, unsigned len)
+{
+
+	if (addr + len > hw->memory)	/* verify arguments */
+		return -EINVAL;
+
+        if(hw->type == SDLA_S514) {	/* copy data for the S514 adapter */
+                peek_by_4 ((unsigned long)hw->dpmbase + addr, buf, len);
+                return 0;
+	}
+
+        else {				/* copy data for the S508 adapter */
+	        unsigned long oldvec = hw->vector;
+        	unsigned winsize = hw->dpmsize;
+	        unsigned curpos, curlen;   /* current offset and block size */
+        	unsigned long curvec;      /* current DPM window vector */
+	        int err = 0;
+
+                while (len && !err) {
+                        curpos = addr % winsize;  /* current window offset */
+                        curvec = addr - curpos;   /* current window vector */
+                        curlen = (len > (winsize - curpos)) ?
+				(winsize - curpos) : len;
+                        /* Relocate window and copy block of data */
+                        err = sdla_mapmem(hw, curvec);
+                        peek_by_4 ((unsigned long)hw->dpmbase + curpos, buf,
+				curlen);
+                        addr       += curlen;
+                        buf         = (char*)buf + curlen;
+                        len        -= curlen;
+                }
+
+                /* Restore DPM window position */
+                sdla_mapmem(hw, oldvec);
+                return err;
+        }
+}
+
+
+/*============================================================================
+ * Read data from adapter's memory to a data buffer in 4-byte chunks.
+ * Note that we ensure that the SDLA memory address is on a 4-byte boundary
+ * before we begin moving the data in 4-byte chunks.
+*/
+
+static void peek_by_4 (unsigned long src, void* buf, unsigned len)
+{
+
+        /* byte copy data until we get to a 4-byte boundary */
+        while (len && (src & 0x03)) {
+                *(char *)buf ++ = readb(src ++);
+                len --;
+        }
+
+        /* copy data in 4-byte chunks */
+        while (len >= 4) {
+                *(unsigned long *)buf = readl(src);
+                buf += 4;
+                src += 4;
+                len -= 4;
+        }
+
+        /* byte copy any remaining data */
+        while (len) {
+                *(char *)buf ++ = readb(src ++);
+                len --;
+        }
+}
+
+
+/*============================================================================
+ * Write Absolute Adapter Memory.
+ * Transfer data from data buffer to adapter's memory.
+ *
+ * Note:
+ * Care should be taken when crossing dual-port memory window boundary.
+ * This function is not atomic, so caller must disable interrupt if
+ * interrupt routines are accessing adapter shared memory.
+ */
+
+EXPORT_SYMBOL(sdla_poke);
+ 
+int sdla_poke (sdlahw_t* hw, unsigned long addr, void* buf, unsigned len)
+{
+
+	if (addr + len > hw->memory)	/* verify arguments */
+		return -EINVAL;
+   
+        if(hw->type == SDLA_S514) {	/* copy data for the S514 adapter */
+                poke_by_4 ((unsigned long)hw->dpmbase + addr, buf, len);
+                return 0;
+	}
+	
+	else {				/* copy data for the S508 adapter */
+    		unsigned long oldvec = hw->vector;
+	        unsigned winsize = hw->dpmsize;
+        	unsigned curpos, curlen;     /* current offset and block size */
+        	unsigned long curvec;        /* current DPM window vector */
+        	int err = 0;
+
+		while (len && !err) {
+                        curpos = addr % winsize;    /* current window offset */
+                        curvec = addr - curpos;     /* current window vector */
+                        curlen = (len > (winsize - curpos)) ?
+				(winsize - curpos) : len;
+                        /* Relocate window and copy block of data */
+                        sdla_mapmem(hw, curvec);
+                        poke_by_4 ((unsigned long)hw->dpmbase + curpos, buf,
+				curlen);
+	                addr       += curlen;
+                        buf         = (char*)buf + curlen;
+                        len        -= curlen;
+                }
+
+                /* Restore DPM window position */
+                sdla_mapmem(hw, oldvec);
+                return err;
+        }
+}
+
+
+/*============================================================================
+ * Write from a data buffer to adapter's memory in 4-byte chunks.
+ * Note that we ensure that the SDLA memory address is on a 4-byte boundary
+ * before we begin moving the data in 4-byte chunks.
+*/
+
+static void poke_by_4 (unsigned long dest, void* buf, unsigned len)
+{
+
+        /* byte copy data until we get to a 4-byte boundary */
+        while (len && (dest & 0x03)) {
+                writeb (*(char *)buf ++, dest ++);
+                len --;
+        }
+
+        /* copy data in 4-byte chunks */
+        while (len >= 4) {
+                writel (*(unsigned long *)buf, dest);
+                dest += 4;
+                buf += 4;
+                len -= 4;
+        }
+
+        /* byte copy any remaining data */
+        while (len) {
+                writeb (*(char *)buf ++ , dest ++);
+                len --;
+        }
+}
+
+
+#ifdef	DONT_COMPIPLE_THIS
+#endif	/* DONT_COMPIPLE_THIS */
+
+/****** Hardware-Specific Functions *****************************************/
+
+/*============================================================================
+ * Detect adapter type.
+ * o if adapter type is specified then call detection routine for that adapter
+ *   type.  Otherwise call detection routines for every adapter types until
+ *   adapter is detected.
+ *
+ * Notes:
+ * 1) Detection tests are destructive! Adapter will be left in shutdown state
+ *    after the test.
+ */
+static int sdla_detect (sdlahw_t* hw)
+{
+	unsigned port = hw->port;
+	int err = 0;
+
+	if (!port && (hw->type != SDLA_S514))
+		return -EFAULT;
+
+    	switch (hw->type) {
+	case SDLA_S502A:
+		if (!detect_s502a(port)) err = -ENODEV;
+		break;
+
+	case SDLA_S502E:
+		if (!detect_s502e(port)) err = -ENODEV;
+		break;
+
+	case SDLA_S503:
+		if (!detect_s503(port)) err = -ENODEV;
+		break;
+
+	case SDLA_S507:
+		if (!detect_s507(port)) err = -ENODEV;
+		break;
+
+	case SDLA_S508:
+		if (!detect_s508(port)) err = -ENODEV;
+		break;
+
+	case SDLA_S514:
+                if (!detect_s514(hw)) err = -ENODEV;
+		break;
+
+	default:
+		if (detect_s502a(port))
+			hw->type = SDLA_S502A;
+		else if (detect_s502e(port))
+			hw->type = SDLA_S502E;
+		else if (detect_s503(port))
+			hw->type = SDLA_S503;
+		else if (detect_s507(port))
+			hw->type = SDLA_S507;
+		else if (detect_s508(port))
+			hw->type = SDLA_S508;
+		else err = -ENODEV;
+	}
+	return err;
+}
+
+/*============================================================================
+ * Autoselect memory region. 
+ * o try all available DMP address options from the top down until success.
+ */
+static int sdla_autodpm (sdlahw_t* hw)
+{
+	int i, err = -EINVAL;
+	unsigned* opt;
+
+	switch (hw->type) {
+	case SDLA_S502A:
+		opt = s502a_dpmbase_options;
+		break;
+
+	case SDLA_S502E:
+	case SDLA_S503:
+	case SDLA_S508:
+		opt = s508_dpmbase_options;
+		break;
+
+	case SDLA_S507:
+		opt = s507_dpmbase_options;
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	/* Start testing from 8th position, address
+         * 0xC8000 from the 508 address table. 
+         * We don't want to test A**** addresses, since
+         * they are usually used for Video */
+	for (i = 8; i <= opt[0] && err; i++) {
+		hw->dpmbase = phys_to_virt(opt[i]);
+		err = sdla_setdpm(hw);
+	}
+	return err;
+}
+
+/*============================================================================
+ * Set up adapter dual-port memory window. 
+ * o shut down adapter
+ * o make sure that no physical memory exists in this region, i.e entire
+ *   region reads 0xFF and is not writable when adapter is shut down.
+ * o initialize adapter hardware
+ * o make sure that region is usable with SDLA card, i.e. we can write to it
+ *   when adapter is configured.
+ */
+static int sdla_setdpm (sdlahw_t* hw)
+{
+	int err;
+
+	/* Shut down card and verify memory region */
+	sdla_down(hw);
+	if (check_memregion(hw->dpmbase, hw->dpmsize))
+		return -EINVAL;
+
+	/* Initialize adapter and test on-board memory segment by segment.
+	 * If memory size appears to be less than shared memory window size,
+	 * assume that memory region is unusable.
+	 */
+	err = sdla_init(hw);
+	if (err) return err;
+
+	if (sdla_memtest(hw) < hw->dpmsize) {	/* less than window size */
+		sdla_down(hw);
+		return -EIO;
+	}
+	sdla_mapmem(hw, 0L);	/* set window vector at bottom */
+	return 0;
+}
+
+/*============================================================================
+ * Load adapter from the memory image of the SDLA firmware module. 
+ * o verify firmware integrity and compatibility
+ * o start adapter up
+ */
+static int sdla_load (sdlahw_t* hw, sfm_t* sfm, unsigned len)
+{
+
+	int i;
+
+	/* Verify firmware signature */
+	if (strcmp(sfm->signature, SFM_SIGNATURE)) {
+		printk(KERN_INFO "%s: not SDLA firmware!\n",
+			modname);
+		return -EINVAL;
+	}
+
+	/* Verify firmware module format version */
+	if (sfm->version != SFM_VERSION) {
+		printk(KERN_INFO
+			"%s: firmware format %u rejected! Expecting %u.\n",
+			modname, sfm->version, SFM_VERSION);
+		return -EINVAL;
+	}
+
+	/* Verify firmware module length and checksum */
+	if ((len - offsetof(sfm_t, image) != sfm->info.codesize) ||
+		(checksum((void*)&sfm->info,
+		sizeof(sfm_info_t) + sfm->info.codesize) != sfm->checksum)) {
+		printk(KERN_INFO "%s: firmware corrupted!\n", modname);
+		return -EINVAL;
+	}
+
+	/* Announce */
+	printk(KERN_INFO "%s: loading %s (ID=%u)...\n", modname,
+		(sfm->descr[0] != '\0') ? sfm->descr : "unknown firmware",
+		sfm->info.codeid);
+
+	if(hw->type == SDLA_S514)
+		printk(KERN_INFO "%s: loading S514 adapter, CPU %c\n",
+			modname, hw->S514_cpu_no[0]);
+
+	/* Scan through the list of compatible adapters and make sure our
+	 * adapter type is listed.
+	 */
+	for (i = 0;
+	     (i < SFM_MAX_SDLA) && (sfm->info.adapter[i] != hw->type);
+	     ++i);
+	
+	if (i == SFM_MAX_SDLA) {
+		printk(KERN_INFO "%s: firmware is not compatible with S%u!\n",
+			modname, hw->type);
+		return -EINVAL;
+	}
+
+
+	/* Make sure there is enough on-board memory */
+	if (hw->memory < sfm->info.memsize) {
+		printk(KERN_INFO
+			"%s: firmware needs %lu bytes of on-board memory!\n",
+			modname, sfm->info.memsize);
+		return -EINVAL;
+	}
+
+	/* Move code onto adapter */
+	if (sdla_poke(hw, sfm->info.codeoffs, sfm->image, sfm->info.codesize)) {
+		printk(KERN_INFO "%s: failed to load code segment!\n",
+			modname);
+		return -EIO;
+	}
+
+	/* Prepare boot-time configuration data and kick-off CPU */
+	sdla_bootcfg(hw, &sfm->info);
+	if (sdla_start(hw, sfm->info.startoffs)) {
+		printk(KERN_INFO "%s: Damn... Adapter won't start!\n",
+			modname);
+		return -EIO;
+	}
+
+	/* position DPM window over the mailbox and enable interrupts */
+        if (sdla_mapmem(hw, sfm->info.winoffs) || sdla_inten(hw)) {
+		printk(KERN_INFO "%s: adapter hardware failure!\n",
+			modname);
+		return -EIO;
+	}
+	hw->fwid = sfm->info.codeid;		/* set firmware ID */
+	return 0;
+}
+
+/*============================================================================
+ * Initialize SDLA hardware: setup memory window, IRQ, etc.
+ */
+static int sdla_init (sdlahw_t* hw)
+{
+	int i;
+
+	for (i = 0; i < SDLA_MAXIORANGE; ++i)
+		hw->regs[i] = 0;
+
+	switch (hw->type) {
+	case SDLA_S502A: return init_s502a(hw);
+	case SDLA_S502E: return init_s502e(hw);
+	case SDLA_S503:  return init_s503(hw);
+	case SDLA_S507:  return init_s507(hw);
+	case SDLA_S508:  return init_s508(hw);
+	}
+	return -EINVAL;
+}
+
+/*============================================================================
+ * Test adapter on-board memory.
+ * o slide DPM window from the bottom up and test adapter memory segment by
+ *   segment.
+ * Return adapter memory size.
+ */
+static unsigned long sdla_memtest (sdlahw_t* hw)
+{
+	unsigned long memsize;
+	unsigned winsize;
+
+	for (memsize = 0, winsize = hw->dpmsize;
+	     !sdla_mapmem(hw, memsize) &&
+		(test_memregion(hw->dpmbase, winsize) == winsize)
+	     ;
+	     memsize += winsize)
+	;
+	hw->memory = memsize;
+	return memsize;
+}
+
+/*============================================================================
+ * Prepare boot-time firmware configuration data.
+ * o position DPM window
+ * o initialize configuration data area
+ */
+static int sdla_bootcfg (sdlahw_t* hw, sfm_info_t* sfminfo)
+{
+	unsigned char* data;
+
+	if (!sfminfo->datasize) return 0;	/* nothing to do */
+
+	if (sdla_mapmem(hw, sfminfo->dataoffs) != 0)
+		return -EIO;
+
+	if(hw->type == SDLA_S514)
+                data = (void*)(hw->dpmbase + sfminfo->dataoffs);
+        else
+                data = (void*)((u8 *)hw->dpmbase +
+                        (sfminfo->dataoffs - hw->vector));
+
+	memset_io (data, 0, sfminfo->datasize);
+
+	writeb (make_config_byte(hw), &data[0x00]);
+
+	switch (sfminfo->codeid) {
+	case SFID_X25_502:
+	case SFID_X25_508:
+                writeb (3, &data[0x01]);        /* T1 timer */
+                writeb (10, &data[0x03]);       /* N2 */
+                writeb (7, &data[0x06]);        /* HDLC window size */
+                writeb (1, &data[0x0B]);        /* DTE */
+                writeb (2, &data[0x0C]);        /* X.25 packet window size */
+                writew (128, &data[0x0D]);	/* default X.25 data size */
+                writew (128, &data[0x0F]);	/* maximum X.25 data size */
+		break;
+	}
+	return 0;
+}
+
+/*============================================================================
+ * Prepare configuration byte identifying adapter type and CPU clock rate.
+ */
+static unsigned char make_config_byte (sdlahw_t* hw)
+{
+	unsigned char byte = 0;
+
+	switch (hw->pclk) {
+		case 5000:  byte = 0x01; break;
+		case 7200:  byte = 0x02; break;
+		case 8000:  byte = 0x03; break;
+		case 10000: byte = 0x04; break;
+		case 16000: byte = 0x05; break;
+	}
+
+	switch (hw->type) {
+		case SDLA_S502E: byte |= 0x80; break;
+		case SDLA_S503:  byte |= 0x40; break;
+	}
+	return byte;
+}
+
+/*============================================================================
+ * Start adapter's CPU.
+ * o calculate a pointer to adapter's cold boot entry point
+ * o position DPM window
+ * o place boot instruction (jp addr) at cold boot entry point
+ * o start CPU
+ */
+static int sdla_start (sdlahw_t* hw, unsigned addr)
+{
+	unsigned port = hw->port;
+	unsigned char *bootp;
+	int err, tmp, i;
+
+	if (!port && (hw->type != SDLA_S514)) return -EFAULT;
+
+ 	switch (hw->type) {
+	case SDLA_S502A:
+		bootp = hw->dpmbase;
+		bootp += 0x66;
+		break;
+
+	case SDLA_S502E:
+	case SDLA_S503:
+	case SDLA_S507:
+	case SDLA_S508:
+	case SDLA_S514:
+		bootp = hw->dpmbase;
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	err = sdla_mapmem(hw, 0);
+	if (err) return err;
+
+      	writeb (0xC3, bootp);   /* Z80: 'jp' opcode */
+	bootp ++;
+	writew (addr, bootp);
+
+	switch (hw->type) {
+	case SDLA_S502A:
+		_OUTB(port, 0x10);		/* issue NMI to CPU */
+		hw->regs[0] = 0x10;
+		break;
+
+	case SDLA_S502E:
+		_OUTB(port + 3, 0x01);		/* start CPU */
+		hw->regs[3] = 0x01;
+		for (i = 0; i < SDLA_IODELAY; ++i);
+		if (_INB(port) & 0x01) {	/* verify */
+			/*
+			 * Enabling CPU changes functionality of the
+			 * control register, so we have to reset its
+			 * mirror.
+			 */
+			_OUTB(port, 0);		/* disable interrupts */
+			hw->regs[0] = 0;
+		}
+		else return -EIO;
+		break;
+
+	case SDLA_S503:
+		tmp = hw->regs[0] | 0x09;	/* set bits 0 and 3 */
+		_OUTB(port, tmp);
+		hw->regs[0] = tmp;		/* update mirror */
+		for (i = 0; i < SDLA_IODELAY; ++i);
+		if (!(_INB(port) & 0x01))	/* verify */
+			return -EIO;
+		break;
+
+	case SDLA_S507:
+		tmp = hw->regs[0] | 0x02;
+		_OUTB(port, tmp);
+		hw->regs[0] = tmp;		/* update mirror */
+		for (i = 0; i < SDLA_IODELAY; ++i);
+		if (!(_INB(port) & 0x04))	/* verify */
+			return -EIO;
+		break;
+
+	case SDLA_S508:
+		tmp = hw->regs[0] | 0x02;
+		_OUTB(port, tmp);
+		hw->regs[0] = tmp;	/* update mirror */
+		for (i = 0; i < SDLA_IODELAY; ++i);
+		if (!(_INB(port + 1) & 0x02))	/* verify */
+			return -EIO;
+		break;
+
+	case SDLA_S514:
+		writeb (S514_CPU_START, hw->vector);
+		break;
+
+	default:
+		return -EINVAL;
+	}
+	return 0;
+}
+
+/*============================================================================
+ * Initialize S502A adapter.
+ */
+static int init_s502a (sdlahw_t* hw)
+{
+	unsigned port = hw->port;
+	int tmp, i;
+
+	if (!detect_s502a(port))
+		return -ENODEV;
+
+	hw->regs[0] = 0x08;
+	hw->regs[1] = 0xFF;
+
+	/* Verify configuration options */
+	i = get_option_index(s502a_dpmbase_options, virt_to_phys(hw->dpmbase));
+	if (i == 0)
+		return -EINVAL;
+
+	tmp = s502a_hmcr[i - 1];
+	switch (hw->dpmsize) {
+	case 0x2000:
+		tmp |= 0x01;
+		break;
+
+	case 0x10000L:
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	/* Setup dual-port memory window (this also enables memory access) */
+	_OUTB(port + 1, tmp);
+	hw->regs[1] = tmp;
+	hw->regs[0] = 0x08;
+	return 0;
+}
+
+/*============================================================================
+ * Initialize S502E adapter.
+ */
+static int init_s502e (sdlahw_t* hw)
+{
+	unsigned port = hw->port;
+	int tmp, i;
+
+	if (!detect_s502e(port))
+		return -ENODEV;
+
+	/* Verify configuration options */
+	i = get_option_index(s508_dpmbase_options, virt_to_phys(hw->dpmbase));
+	if (i == 0)
+		return -EINVAL;
+
+	tmp = s502e_hmcr[i - 1];
+	switch (hw->dpmsize) {
+	case 0x2000:
+		tmp |= 0x01;
+		break;
+
+	case 0x10000L:
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	/* Setup dual-port memory window */
+	_OUTB(port + 1, tmp);
+	hw->regs[1] = tmp;
+
+	/* Enable memory access */
+	_OUTB(port, 0x02);
+	hw->regs[0] = 0x02;
+	for (i = 0; i < SDLA_IODELAY; ++i);	/* delay */
+	return (_INB(port) & 0x02) ? 0 : -EIO;
+}
+
+/*============================================================================
+ * Initialize S503 adapter.
+ * ---------------------------------------------------------------------------
+ */
+static int init_s503 (sdlahw_t* hw)
+{
+	unsigned port = hw->port;
+	int tmp, i;
+
+	if (!detect_s503(port))
+		return -ENODEV;
+
+	/* Verify configuration options */
+	i = get_option_index(s508_dpmbase_options, virt_to_phys(hw->dpmbase));
+	if (i == 0)
+		return -EINVAL;
+
+	tmp = s502e_hmcr[i - 1];
+	switch (hw->dpmsize) {
+	case 0x2000:
+		tmp |= 0x01;
+		break;
+
+	case 0x10000L:
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	/* Setup dual-port memory window */
+	_OUTB(port + 1, tmp);
+	hw->regs[1] = tmp;
+
+	/* Enable memory access */
+	_OUTB(port, 0x02);
+	hw->regs[0] = 0x02;	/* update mirror */
+	return 0;
+}
+
+/*============================================================================
+ * Initialize S507 adapter.
+ */
+static int init_s507 (sdlahw_t* hw)
+{
+	unsigned port = hw->port;
+	int tmp, i;
+
+	if (!detect_s507(port))
+		return -ENODEV;
+
+	/* Verify configuration options */
+	i = get_option_index(s507_dpmbase_options, virt_to_phys(hw->dpmbase));
+	if (i == 0)
+		return -EINVAL;
+
+	tmp = s507_hmcr[i - 1];
+	switch (hw->dpmsize) {
+	case 0x2000:
+		tmp |= 0x01;
+		break;
+
+	case 0x10000L:
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	/* Enable adapter's logic */
+	_OUTB(port, 0x01);
+	hw->regs[0] = 0x01;
+	for (i = 0; i < SDLA_IODELAY; ++i);	/* delay */
+	if (!(_INB(port) & 0x20))
+		return -EIO;
+
+	/* Setup dual-port memory window */
+	_OUTB(port + 1, tmp);
+	hw->regs[1] = tmp;
+
+	/* Enable memory access */
+	tmp = hw->regs[0] | 0x04;
+	if (hw->irq) {
+		i = get_option_index(s508_irq_options, hw->irq);
+		if (i) tmp |= s507_irqmask[i - 1];
+	}
+	_OUTB(port, tmp);
+	hw->regs[0] = tmp;		/* update mirror */
+	for (i = 0; i < SDLA_IODELAY; ++i);	/* delay */
+	return (_INB(port) & 0x08) ? 0 : -EIO;
+}
+
+/*============================================================================
+ * Initialize S508 adapter.
+ */
+static int init_s508 (sdlahw_t* hw)
+{
+	unsigned port = hw->port;
+	int tmp, i;
+
+	if (!detect_s508(port))
+		return -ENODEV;
+
+	/* Verify configuration options */
+	i = get_option_index(s508_dpmbase_options, virt_to_phys(hw->dpmbase));
+	if (i == 0)
+		return -EINVAL;
+
+	/* Setup memory configuration */
+	tmp = s508_hmcr[i - 1];
+	_OUTB(port + 1, tmp);
+	hw->regs[1] = tmp;
+
+	/* Enable memory access */
+	_OUTB(port, 0x04);
+	hw->regs[0] = 0x04;		/* update mirror */
+	for (i = 0; i < SDLA_IODELAY; ++i);	/* delay */
+	return (_INB(port + 1) & 0x04) ? 0 : -EIO;
+}
+
+/*============================================================================
+ * Detect S502A adapter.
+ *	Following tests are used to detect S502A adapter:
+ *	1. All registers other than status (BASE) should read 0xFF
+ *	2. After writing 00001000b to control register, status register should
+ *	   read 01000000b.
+ *	3. After writing 0 to control register, status register should still
+ *	   read  01000000b.
+ *	4. After writing 00000100b to control register, status register should
+ *	   read 01000100b.
+ *	Return 1 if detected o.k. or 0 if failed.
+ *	Note:	This test is destructive! Adapter will be left in shutdown
+ *		state after the test.
+ */
+static int detect_s502a (int port)
+{
+	int i, j;
+
+	if (!get_option_index(s502_port_options, port))
+		return 0;
+	
+	for (j = 1; j < SDLA_MAXIORANGE; ++j) {
+		if (_INB(port + j) != 0xFF)
+			return 0;
+		for (i = 0; i < SDLA_IODELAY; ++i);	/* delay */
+	}
+
+	_OUTB(port, 0x08);			/* halt CPU */
+	_OUTB(port, 0x08);
+	_OUTB(port, 0x08);
+	for (i = 0; i < SDLA_IODELAY; ++i);	/* delay */
+	if (_INB(port) != 0x40)
+		return 0;
+	_OUTB(port, 0x00);
+	for (i = 0; i < SDLA_IODELAY; ++i);	/* delay */
+	if (_INB(port) != 0x40)
+		return 0;
+	_OUTB(port, 0x04);
+	for (i = 0; i < SDLA_IODELAY; ++i);	/* delay */
+	if (_INB(port) != 0x44)
+		return 0;
+
+	/* Reset adapter */
+	_OUTB(port, 0x08);
+	_OUTB(port, 0x08);
+	_OUTB(port, 0x08);
+	_OUTB(port + 1, 0xFF);
+	return 1;
+}
+
+/*============================================================================
+ * Detect S502E adapter.
+ *	Following tests are used to verify adapter presence:
+ *	1. All registers other than status (BASE) should read 0xFF.
+ *	2. After writing 0 to CPU control register (BASE+3), status register
+ *	   (BASE) should read 11111000b.
+ *	3. After writing 00000100b to port BASE (set bit 2), status register
+ *	   (BASE) should read 11111100b.
+ *	Return 1 if detected o.k. or 0 if failed.
+ *	Note:	This test is destructive! Adapter will be left in shutdown
+ *		state after the test.
+ */
+static int detect_s502e (int port)
+{
+	int i, j;
+
+	if (!get_option_index(s502_port_options, port))
+		return 0;
+	for (j = 1; j < SDLA_MAXIORANGE; ++j) {
+		if (_INB(port + j) != 0xFF)
+			return 0;
+		for (i = 0; i < SDLA_IODELAY; ++i);	/* delay */
+	}
+
+	_OUTB(port + 3, 0);			/* CPU control reg. */
+	for (i = 0; i < SDLA_IODELAY; ++i);	/* delay */
+	if (_INB(port) != 0xF8)			/* read status */
+		return 0;
+	_OUTB(port, 0x04);			/* set bit 2 */
+	for (i = 0; i < SDLA_IODELAY; ++i);	/* delay */
+	if (_INB(port) != 0xFC)			/* verify */
+		return 0;
+
+	/* Reset adapter */
+	_OUTB(port, 0);
+	return 1;
+}
+
+/*============================================================================
+ * Detect s503 adapter.
+ *	Following tests are used to verify adapter presence:
+ *	1. All registers other than status (BASE) should read 0xFF.
+ *	2. After writing 0 to control register (BASE), status register (BASE)
+ *	   should read 11110000b.
+ *	3. After writing 00000100b (set bit 2) to control register (BASE),
+ *	   status register should read 11110010b.
+ *	Return 1 if detected o.k. or 0 if failed.
+ *	Note:	This test is destructive! Adapter will be left in shutdown
+ *		state after the test.
+ */
+static int detect_s503 (int port)
+{
+	int i, j;
+
+	if (!get_option_index(s503_port_options, port))
+		return 0;
+	for (j = 1; j < SDLA_MAXIORANGE; ++j) {
+		if (_INB(port + j) != 0xFF)
+			return 0;
+		for (i = 0; i < SDLA_IODELAY; ++i);	/* delay */
+	}
+
+	_OUTB(port, 0);				/* reset control reg.*/
+	for (i = 0; i < SDLA_IODELAY; ++i);	/* delay */
+	if (_INB(port) != 0xF0)			/* read status */
+		return 0;
+	_OUTB(port, 0x04);			/* set bit 2 */
+	for (i = 0; i < SDLA_IODELAY; ++i);	/* delay */
+	if (_INB(port) != 0xF2)			/* verify */
+		return 0;
+
+	/* Reset adapter */
+	_OUTB(port, 0);
+	return 1;
+}
+
+/*============================================================================
+ * Detect s507 adapter.
+ *	Following tests are used to detect s507 adapter:
+ *	1. All ports should read the same value.
+ *	2. After writing 0x00 to control register, status register should read
+ *	   ?011000?b.
+ *	3. After writing 0x01 to control register, status register should read
+ *	   ?011001?b.
+ *	Return 1 if detected o.k. or 0 if failed.
+ *	Note:	This test is destructive! Adapter will be left in shutdown
+ *		state after the test.
+ */
+static int detect_s507 (int port)
+{
+	int tmp, i, j;
+
+	if (!get_option_index(s508_port_options, port))
+		return 0;
+	tmp = _INB(port);
+	for (j = 1; j < S507_IORANGE; ++j) {
+		if (_INB(port + j) != tmp)
+			return 0;
+		for (i = 0; i < SDLA_IODELAY; ++i);	/* delay */
+	}
+
+	_OUTB(port, 0x00);
+	for (i = 0; i < SDLA_IODELAY; ++i);	/* delay */
+	if ((_INB(port) & 0x7E) != 0x30)
+		return 0;
+	_OUTB(port, 0x01);
+	for (i = 0; i < SDLA_IODELAY; ++i);	/* delay */
+	if ((_INB(port) & 0x7E) != 0x32)
+		return 0;
+
+	/* Reset adapter */
+	_OUTB(port, 0x00);
+	return 1;
+}
+
+/*============================================================================
+ * Detect s508 adapter.
+ *	Following tests are used to detect s508 adapter:
+ *	1. After writing 0x00 to control register, status register should read
+ *	   ??000000b.
+ *	2. After writing 0x10 to control register, status register should read
+ *	   ??010000b
+ *	Return 1 if detected o.k. or 0 if failed.
+ *	Note:	This test is destructive! Adapter will be left in shutdown
+ *		state after the test.
+ */
+static int detect_s508 (int port)
+{
+	int i;
+
+	if (!get_option_index(s508_port_options, port))
+		return 0;
+	_OUTB(port, 0x00);
+	for (i = 0; i < SDLA_IODELAY; ++i);	/* delay */
+	if ((_INB(port + 1) & 0x3F) != 0x00)
+		return 0;
+	_OUTB(port, 0x10);
+	for (i = 0; i < SDLA_IODELAY; ++i);	/* delay */
+	if ((_INB(port + 1) & 0x3F) != 0x10)
+		return 0;
+
+	/* Reset adapter */
+	_OUTB(port, 0x00);
+	return 1;
+}
+
+/*============================================================================
+ * Detect s514 PCI adapter.
+ *      Return 1 if detected o.k. or 0 if failed.
+ *      Note:   This test is destructive! Adapter will be left in shutdown
+ *              state after the test.
+ */
+static int detect_s514 (sdlahw_t* hw)
+{
+	unsigned char CPU_no, slot_no, auto_slot_cfg;
+	int number_S514_cards = 0;
+	u32 S514_mem_base_addr = 0;
+	u32 ut_u32;
+	struct pci_dev *pci_dev;
+
+
+#ifndef CONFIG_PCI
+        printk(KERN_INFO "%s: Linux not compiled for PCI usage!\n", modname);
+        return 0;
+#endif
+
+	/*
+	The 'setup()' procedure in 'sdlamain.c' passes the CPU number and the
+	slot number defined in 'router.conf' via the 'port' definition.
+	*/
+	CPU_no = hw->S514_cpu_no[0];
+	slot_no = hw->S514_slot_no;
+	auto_slot_cfg = hw->auto_pci_cfg;
+
+	if (auto_slot_cfg){
+		printk(KERN_INFO "%s: srch... S514 card, CPU %c, Slot=Auto\n",
+		modname, CPU_no);
+
+	}else{
+		printk(KERN_INFO "%s: srch... S514 card, CPU %c, Slot #%d\n",
+		modname, CPU_no, slot_no);
+	}
+	
+	/* check to see that CPU A or B has been selected in 'router.conf' */
+	switch(CPU_no) {
+		case S514_CPU_A:
+		case S514_CPU_B:
+			break;
+	
+		default:
+			printk(KERN_INFO "%s: S514 CPU definition invalid.\n", 
+				modname);
+			printk(KERN_INFO "Must be 'A' or 'B'\n");
+			return 0;
+	}
+
+	number_S514_cards = find_s514_adapter(hw, 0);
+	if(!number_S514_cards)
+		return 0;
+
+	/* we are using a single S514 adapter with a slot of 0 so re-read the */	
+	/* location of this adapter */
+	if((number_S514_cards == 1) && auto_slot_cfg) {	
+        	number_S514_cards = find_s514_adapter(hw, 1);
+		if(!number_S514_cards) {
+			printk(KERN_INFO "%s: Error finding PCI card\n",
+				modname);
+			return 0;
+		}
+	}
+
+	pci_dev = hw->pci_dev;
+	/* read the physical memory base address */
+	S514_mem_base_addr = (CPU_no == S514_CPU_A) ? 
+		(pci_dev->resource[1].start) :
+		(pci_dev->resource[2].start);
+	
+	printk(KERN_INFO "%s: S514 PCI memory at 0x%X\n",
+		modname, S514_mem_base_addr);
+	if(!S514_mem_base_addr) {
+		if(CPU_no == S514_CPU_B)
+			printk(KERN_INFO "%s: CPU #B not present on the card\n", 				modname);
+		else
+			printk(KERN_INFO "%s: No PCI memory allocated to card\n",				modname);
+		return 0;
+	}
+
+	/* enable the PCI memory */
+	pci_read_config_dword(pci_dev, 
+		(CPU_no == S514_CPU_A) ? PCI_MAP0_DWORD : PCI_MAP1_DWORD,
+		&ut_u32);
+	pci_write_config_dword(pci_dev,
+		(CPU_no == S514_CPU_A) ? PCI_MAP0_DWORD : PCI_MAP1_DWORD,
+		(ut_u32 | PCI_MEMORY_ENABLE));
+
+	/* check the IRQ allocated and enable IRQ usage */
+	if(!(hw->irq = pci_dev->irq)) {
+		printk(KERN_INFO "%s: IRQ not allocated to S514 adapter\n",
+			modname);
+                return 0;
+	}
+
+	/* BUG FIX : Mar 6 2000
+ 	 * On a initial loading of the card, we must check
+         * and clear PCI interrupt bits, due to a reset
+         * problem on some other boards.  i.e. An interrupt
+         * might be pending, even after system bootup, 
+         * in which case, when starting wanrouter the machine
+         * would crash. 
+	 */
+	if (init_pci_slot(hw))
+		return 0;
+
+        pci_read_config_dword(pci_dev, PCI_INT_CONFIG, &ut_u32);
+        ut_u32 |= (CPU_no == S514_CPU_A) ?
+                PCI_ENABLE_IRQ_CPU_A : PCI_ENABLE_IRQ_CPU_B;
+        pci_write_config_dword(pci_dev, PCI_INT_CONFIG, ut_u32);
+
+	printk(KERN_INFO "%s: IRQ %d allocated to the S514 card\n",
+		modname, hw->irq);
+
+	/* map the physical PCI memory to virtual memory */
+	(void *)hw->dpmbase = ioremap((unsigned long)S514_mem_base_addr,
+		(unsigned long)MAX_SIZEOF_S514_MEMORY);
+    	/* map the physical control register memory to virtual memory */
+	hw->vector = (unsigned long)ioremap(
+		(unsigned long)(S514_mem_base_addr + S514_CTRL_REG_BYTE),
+		(unsigned long)16);
+     
+        if(!hw->dpmbase || !hw->vector) {
+		printk(KERN_INFO "%s: PCI virtual memory allocation failed\n",
+			modname);
+                return 0;
+	}
+
+	/* halt the adapter */
+	writeb (S514_CPU_HALT, hw->vector);	
+
+	return 1;
+}
+
+/*============================================================================
+ * Find the S514 PCI adapter in the PCI bus.
+ *      Return the number of S514 adapters found (0 if no adapter found).
+ */
+static int find_s514_adapter(sdlahw_t* hw, char find_first_S514_card)
+{
+        unsigned char slot_no;
+        int number_S514_cards = 0;
+	char S514_found_in_slot = 0;
+        u16 PCI_subsys_vendor;
+
+        struct pci_dev *pci_dev = NULL;
+ 
+       slot_no = hw->S514_slot_no;
+  
+	while ((pci_dev = pci_find_device(V3_VENDOR_ID, V3_DEVICE_ID, pci_dev))
+        	!= NULL) {
+                
+		pci_read_config_word(pci_dev, PCI_SUBSYS_VENDOR_WORD,
+                        &PCI_subsys_vendor);
+                
+		if(PCI_subsys_vendor != SANGOMA_SUBSYS_VENDOR)
+                	continue;
+        	
+		hw->pci_dev = pci_dev;
+		
+		if(find_first_S514_card)
+			return(1);
+		
+                number_S514_cards ++;
+                
+		printk(KERN_INFO
+			"%s: S514 card found, slot #%d (devfn 0x%X)\n",
+                        modname, ((pci_dev->devfn >> 3) & PCI_DEV_SLOT_MASK),
+			pci_dev->devfn);
+		
+		if (hw->auto_pci_cfg){
+			hw->S514_slot_no = ((pci_dev->devfn >> 3) & PCI_DEV_SLOT_MASK);
+			slot_no = hw->S514_slot_no;
+			
+		}else if (((pci_dev->devfn >> 3) & PCI_DEV_SLOT_MASK) == slot_no){
+                        S514_found_in_slot = 1;
+                        break;
+                }
+        }
+
+	/* if no S514 adapter has been found, then exit */
+        if (!number_S514_cards) {
+                printk(KERN_INFO "%s: Error, no S514 adapters found\n", modname);
+                return 0;
+        }
+        /* if more than one S514 card has been found, then the user must have */        /* defined a slot number so that the correct adapter is used */
+        else if ((number_S514_cards > 1) && hw->auto_pci_cfg) {
+                printk(KERN_INFO "%s: Error, PCI Slot autodetect Failed! \n"
+				 "%s:        More than one S514 adapter found.\n"
+				 "%s:        Disable the Autodetect feature and supply\n"
+				 "%s:        the PCISLOT numbers for each card.\n",
+                        modname,modname,modname,modname);
+                return 0;
+        }
+        /* if the user has specified a slot number and the S514 adapter has */
+        /* not been found in that slot, then exit */
+        else if (!hw->auto_pci_cfg && !S514_found_in_slot) {
+                printk(KERN_INFO
+			"%s: Error, S514 card not found in specified slot #%d\n",
+                        modname, slot_no);
+                return 0;
+        }
+
+	return (number_S514_cards);
+}
+
+
+
+/******* Miscellaneous ******************************************************/
+
+/*============================================================================
+ * Calibrate SDLA memory access delay.
+ * Count number of idle loops made within 1 second and then calculate the
+ * number of loops that should be made to achive desired delay.
+ */
+static int calibrate_delay (int mks)
+{
+	unsigned int delay;
+	unsigned long stop;
+
+	for (delay = 0, stop = SYSTEM_TICK + HZ; SYSTEM_TICK < stop; ++delay);
+	return (delay/(1000000L/mks) + 1);
+}
+
+/*============================================================================
+ * Get option's index into the options list.
+ *	Return option's index (1 .. N) or zero if option is invalid.
+ */
+static int get_option_index (unsigned* optlist, unsigned optval)
+{
+	int i;
+
+	for (i = 1; i <= optlist[0]; ++i)
+		if ( optlist[i] == optval)
+			return i;
+	return 0;
+}
+
+/*============================================================================
+ * Check memory region to see if it's available. 
+ * Return:	0	ok.
+ */
+static unsigned check_memregion (void* ptr, unsigned len)
+{
+	volatile unsigned char* p = ptr;
+
+        for (; len && (readb (p) == 0xFF); --len, ++p) {
+                writeb (0, p);          /* attempt to write 0 */
+                if (readb(p) != 0xFF) { /* still has to read 0xFF */
+                        writeb (0xFF, p);/* restore original value */
+                        break;          /* not good */
+                }
+        }
+
+	return len;
+}
+
+/*============================================================================
+ * Test memory region.
+ * Return:	size of the region that passed the test.
+ * Note:	Region size must be multiple of 2 !
+ */
+static unsigned test_memregion (void* ptr, unsigned len)
+{
+	volatile unsigned short* w_ptr;
+	unsigned len_w = len >> 1;	/* region len in words */
+	unsigned i;
+
+        for (i = 0, w_ptr = ptr; i < len_w; ++i, ++w_ptr)
+                writew (0xAA55, w_ptr);
+        
+	for (i = 0, w_ptr = ptr; i < len_w; ++i, ++w_ptr)
+                if (readw (w_ptr) != 0xAA55) {
+                        len_w = i;
+                        break;
+                }
+
+        for (i = 0, w_ptr = ptr; i < len_w; ++i, ++w_ptr)
+                writew (0x55AA, w_ptr);
+        
+        for (i = 0, w_ptr = ptr; i < len_w; ++i, ++w_ptr)
+                if (readw(w_ptr) != 0x55AA) {
+                        len_w = i;
+                        break;
+                }
+        
+        for (i = 0, w_ptr = ptr; i < len_w; ++i, ++w_ptr)
+		writew (0, w_ptr);
+
+        return len_w << 1;
+}
+
+/*============================================================================
+ * Calculate 16-bit CRC using CCITT polynomial.
+ */
+static unsigned short checksum (unsigned char* buf, unsigned len)
+{
+	unsigned short crc = 0;
+	unsigned mask, flag;
+
+	for (; len; --len, ++buf) {
+		for (mask = 0x80; mask; mask >>= 1) {
+			flag = (crc & 0x8000);
+			crc <<= 1;
+			crc |= ((*buf & mask) ? 1 : 0);
+			if (flag) crc ^= 0x1021;
+		}
+	}
+	return crc;
+}
+
+static int init_pci_slot(sdlahw_t *hw)
+{
+
+	u32 int_status;
+	int volatile found=0;
+	int i=0;
+
+	/* Check if this is a very first load for a specific
+         * pci card. If it is, clear the interrput bits, and
+         * set the flag indicating that this card was initialized.
+	 */
+	
+	for (i=0; (i<MAX_S514_CARDS) && !found; i++){
+		if (pci_slot_ar[i] == hw->S514_slot_no){
+			found=1;
+			break;
+		}
+		if (pci_slot_ar[i] == 0xFF){
+			break;
+		}
+	}
+
+	if (!found){
+		read_S514_int_stat(hw,&int_status);
+		S514_intack(hw,int_status);
+		if (i == MAX_S514_CARDS){
+			printk(KERN_INFO "%s: Critical Error !!!\n",modname);
+			printk(KERN_INFO 
+				"%s: Number of Sangoma PCI cards exceeded maximum limit.\n",
+					modname);
+			printk(KERN_INFO "Please contact Sangoma Technologies\n");
+			return 1;
+		}
+		pci_slot_ar[i] = hw->S514_slot_no;
+	}
+	return 0;
+}
+
+static int pci_probe(sdlahw_t *hw)
+{
+
+        unsigned char slot_no;
+        int number_S514_cards = 0;
+        u16 PCI_subsys_vendor;
+	u16 PCI_card_type;
+
+        struct pci_dev *pci_dev = NULL;
+	struct pci_bus *bus = NULL;
+ 
+       slot_no = 0;
+  
+	while ((pci_dev = pci_find_device(V3_VENDOR_ID, V3_DEVICE_ID, pci_dev))
+        	!= NULL) {
+		
+                pci_read_config_word(pci_dev, PCI_SUBSYS_VENDOR_WORD,
+                        &PCI_subsys_vendor);
+		
+                if(PCI_subsys_vendor != SANGOMA_SUBSYS_VENDOR)
+                	continue;
+
+		pci_read_config_word(pci_dev, PCI_CARD_TYPE,
+                        &PCI_card_type);
+	
+		bus = pci_dev->bus;
+		
+		/* A dual cpu card can support up to 4 physical connections,
+		 * where a single cpu card can support up to 2 physical
+		 * connections.  The FT1 card can only support a single 
+		 * connection, however we cannot distinguish between a Single
+		 * CPU card and an FT1 card. */
+		if (PCI_card_type == S514_DUAL_CPU){
+                	number_S514_cards += 4;
+			 printk(KERN_INFO
+				"wanpipe: S514-PCI card found, cpu(s) 2, bus #%d, slot #%d, irq #%d\n",
+                        	bus->number,((pci_dev->devfn >> 3) & PCI_DEV_SLOT_MASK),
+				pci_dev->irq);
+		}else{
+			number_S514_cards += 2;
+			printk(KERN_INFO
+				"wanpipe: S514-PCI card found, cpu(s) 1, bus #%d, slot #%d, irq #%d\n",
+                        	bus->number,((pci_dev->devfn >> 3) & PCI_DEV_SLOT_MASK),
+				pci_dev->irq);
+		}
+        }
+
+	return number_S514_cards;
+
+}
+
+
+
+EXPORT_SYMBOL(wanpipe_hw_probe);
+
+unsigned wanpipe_hw_probe(void)
+{
+	sdlahw_t hw;
+	unsigned* opt = s508_port_options; 
+	unsigned cardno=0;
+	int i;
+	
+	memset(&hw, 0, sizeof(hw));
+	
+	for (i = 1; i <= opt[0]; i++) {
+		if (detect_s508(opt[i])){
+			/* S508 card can support up to two physical links */
+			cardno+=2;
+			printk(KERN_INFO "wanpipe: S508-ISA card found, port 0x%x\n",opt[i]);
+		}
+	}
+
+      #ifdef CONFIG_PCI
+	hw.S514_slot_no = 0;
+	cardno += pci_probe(&hw);
+      #else
+	printk(KERN_INFO "wanpipe: Warning, Kernel not compiled for PCI support!\n");
+	printk(KERN_INFO "wanpipe: PCI Hardware Probe Failed!\n");
+      #endif
+
+	return cardno;
+}
+
+/****** End *****************************************************************/