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/*
             LUFA Library
     Copyright (C) Dean Camera, 2017.

  dean [at] fourwalledcubicle [dot] com
           www.lufa-lib.org
*/

/*
  Copyright 2017  Dean Camera (dean [at] fourwalledcubicle [dot] com)

  Permission to use, copy, modify, distribute, and sell this
  software and its documentation for any purpose is hereby granted
  without fee, provided that the above copyright notice appear in
  all copies and that both that the copyright notice and this
  permission notice and warranty disclaimer appear in supporting
  documentation, and that the name of the author not be used in
  advertising or publicity pertaining to distribution of the
  software without specific, written prior permission.

  The author disclaims all warranties with regard to this
  software, including all implied warranties of merchantability
  and fitness.  In no event shall the author be liable for any
  special, indirect or consequential damages or any damages
  whatsoever resulting from loss of use, data or profits, whether
  in an action of contract, negligence or other tortious action,
  arising out of or in connection with the use or performance of
  this software.
*/

/** \file
 *
 *  Header file for AVRISP.c.
 */

#ifndef _AVRISP_H_
#define _AVRISP_H_

	/* Includes: */
		#include <avr/io.h>
		#include <avr/wdt.h>
		#include <avr/interrupt.h>
		#include <avr/power.h>

		#include <LUFA/Drivers/Board/LEDs.h>
		#include <LUFA/Drivers/USB/USB.h>
		#include <LUFA/Platform/Platform.h>

		#if defined(ADC)
			#include <LUFA/Drivers/Peripheral/ADC.h>
		#endif

		#include "AVRISPDescriptors.h"
		#include "Lib/V2Protocol.h"
		#include "Config/AppConfig.h"

	/* Macros: */
		/** LED mask for the library LED driver, to indicate that the USB interface is not ready. */
		#define LEDMASK_USB_NOTREADY      LEDS_LED1

		/** LED mask for the library LED driver, to indicate that the USB interface is enumerating. */
		#define LEDMASK_USB_ENUMERATING  (LEDS_LED1 | LEDS_LED2)

		/** LED mask for the library LED driver, to indicate that the USB interface is ready. */
		#define LEDMASK_USB_READY         LEDS_LED2

		/** LED mask for the library LED driver, to indicate that an error has occurred in the USB interface. */
		#define LEDMASK_USB_ERROR         LEDS_LED1

		/** LED mask for the library LED driver, to indicate that the USB interface is busy. */
		#define LEDMASK_BUSY             (LEDS_LED1 | LEDS_LED2)

		/** LED mask for the library LED driver, to indicate that the target is being powered by VBUS. */
		#define LEDMASK_VBUSPOWER         LEDS_LED3

	/* Function Prototypes: */
		void SetupHardware(void);
		void AVRISP_Task(void);

		void EVENT_USB_Device_Connect(void);
		void EVENT_USB_Device_Disconnect(void);
		void EVENT_USB_Device_ConfigurationChanged(void);

		uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
		                                    const uint16_t wIndex,
		                                    const void** const DescriptorAddress)
		                                    ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);

#endif
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#include <xen/config.h>
#include <xen/types.h>
#include <xen/lib.h>
#include <xen/kernel.h>
#include <xen/string.h>
#include <xen/init.h>
#include <xen/cache.h>
#include <xen/acpi.h>
#include <asm/io.h>
#include <asm/system.h>
#include <xen/dmi.h>

#define bt_ioremap(b,l)  ((u8 *)__acpi_map_table(b,l))
#define bt_iounmap(b,l)  ((void)0)
#define memcpy_fromio    memcpy
#define alloc_bootmem(l) xmalloc_bytes(l)

struct dmi_header
{
	u8	type;
	u8	length;
	u16	handle;
};

#undef DMI_DEBUG

#ifdef DMI_DEBUG
#define dmi_printk(x) printk x
#else
#define dmi_printk(x)
#endif

static char * __init dmi_string(struct dmi_header *dm, u8 s)
{
	char *bp=(char *)dm;
	bp+=dm->length;
	if(!s)
		return "";
	s--;
	while(s>0 && *bp)
	{
		bp+=strlen(bp);
		bp++;
		s--;
	}
	return bp;
}

/*
 *	We have to be cautious here. We have seen BIOSes with DMI pointers
 *	pointing to completely the wrong place for example
 */
 
static int __init dmi_table(u32 base, int len, int num, void (*decode)(struct dmi_header *))
{
	u8 *buf;
	struct dmi_header *dm;
	u8 *data;
	int i=0;
		
	buf = bt_ioremap(base, len);
	if(buf==NULL)
		return -1;

	data = buf;

	/*
 	 *	Stop when we see all the items the table claimed to have
 	 *	OR we run off the end of the table (also happens)
 	 */
 
	while(i<num && data-buf+sizeof(struct dmi_header)<=len)
	{
		dm=(struct dmi_header *)data;
		/*
		 *  We want to know the total length (formated area and strings)
		 *  before decoding to make sure we won't run off the table in
		 *  dmi_decode or dmi_string
		 */
		data+=dm->length;
		while(data-buf<len-1 && (data[0] || data[1]))
			data++;
		if(data-buf<len-1)
			decode(dm);
		data+=2;
		i++;
	}
	bt_iounmap(buf, len);
	return 0;
}


inline static int __init dmi_checksum(u8 *buf)
{
	u8 sum=0;
	int a;
	
	for(a=0; a<15; a++)
		sum+=buf[a];
	return (sum==0);
}

int __init dmi_get_table(u32 *base, u32 *len)
{
	u8 buf[15];
	char __iomem *p, *q;

	p = maddr_to_virt(0xF0000);
	for (q = p; q < p + 0x10000; q += 16) {
		memcpy_fromio(buf, q, 15);
		if (memcmp(buf, "_DMI_", 5)==0 && dmi_checksum(buf)) {
			*base=buf[11]<<24|buf[10]<<16|buf[9]<<8|buf[8];
			*len=buf[7]<<8|buf[6];
			return 0;
		}
	}
	return -1;
}

static int __init dmi_iterate(void (*decode)(struct dmi_header *))
{
	u8 buf[15];
	char __iomem *p, *q;

	p = maddr_to_virt(0xF0000);
	for (q = p; q < p + 0x10000; q += 16) {
		memcpy_fromio(buf, q, 15);
		if (memcmp(buf, "_DMI_", 5)==0 && dmi_checksum(buf)) {
			u16 num=buf[13]<<8|buf[12];
			u16 len=buf[7]<<8|buf[6];
			u32 base=buf[11]<<24|buf[10]<<16|buf[9]<<8|buf[8];

			/*
			 * DMI version 0.0 means that the real version is taken from
			 * the SMBIOS version, which we don't know at this point.
			 */
			if(buf[14]!=0)
				printk(KERN_INFO "DMI %d.%d present.\n",
					buf[14]>>4, buf[14]&0x0F);
			else
				printk(KERN_INFO "DMI present.\n");
			dmi_printk((KERN_INFO "%d structures occupying %d bytes.\n",
				num, len));
			dmi_printk((KERN_INFO "DMI table at 0x%08X.\n",
				base));
			if(dmi_table(base,len, num, decode)==0)
				return 0;
		}
	}
	return -1;
}

static char *dmi_ident[DMI_STRING_MAX];

/*
 *	Save a DMI string
 */
 
static void __init dmi_save_ident(struct dmi_header *dm, int slot, int string)
{
	char *d = (char*)dm;
	char *p = dmi_string(dm, d[string]);
	if(p==NULL || *p == 0)
		return;
	if (dmi_ident[slot])
		return;
	dmi_ident[slot] = alloc_bootmem(strlen(p)+1);
	if(dmi_ident[slot])
		strlcpy(dmi_ident[slot], p, strlen(p)+1);
	else
		printk(KERN_ERR "dmi_save_ident: out of memory.\n");
}

/*
 * Ugly compatibility crap.
 */
#define dmi_blacklist	dmi_system_id
#define NO_MATCH	{ DMI_NONE, NULL}
#define MATCH		DMI_MATCH

/*
 * Toshiba keyboard likes to repeat keys when they are not repeated.
 */

static __init int broken_toshiba_keyboard(struct dmi_blacklist *d)
{
	printk(KERN_WARNING "Toshiba with broken keyboard detected. If your keyboard sometimes generates 3 keypresses instead of one, see http://davyd.ucc.asn.au/projects/toshiba/README\n");
	return 0;
}


#ifdef CONFIG_ACPI_SLEEP
static __init int reset_videomode_after_s3(struct dmi_blacklist *d)
{
	/* See acpi_wakeup.S */
	acpi_video_flags |= 2;
	return 0;
}
#endif


#ifdef	CONFIG_ACPI_BOOT
extern int acpi_force;

static __init __attribute__((unused)) int dmi_disable_acpi(struct dmi_blacklist *d) 
{ 
	if (!acpi_force) { 
		printk(KERN_NOTICE "%s detected: acpi off\n",d->ident);
		disable_acpi();
	} else { 
		printk(KERN_NOTICE 
		       "Warning: DMI blacklist says broken, but acpi forced\n");
	}
	return 0;
} 

/*
 * Limit ACPI to CPU enumeration for HT
 */
static __init __attribute__((unused)) int force_acpi_ht(struct dmi_blacklist *d) 
{ 
	if (!acpi_force) { 
		printk(KERN_NOTICE "%s detected: force use of acpi=ht\n", d->ident);
		disable_acpi();
		acpi_ht = 1;
	} else { 
		printk(KERN_NOTICE 
		       "Warning: acpi=force overrules DMI blacklist: acpi=ht\n");
	}
	return 0;
} 
#endif

#ifdef	CONFIG_ACPI_PCI
static __init int disable_acpi_irq(struct dmi_blacklist *d) 
{
	if (!acpi_force) {
		printk(KERN_NOTICE "%s detected: force use of acpi=noirq\n",
		       d->ident); 	
		acpi_noirq_set();
	}
	return 0;
}
static __init int disable_acpi_pci(struct dmi_blacklist *d) 
{
	if (!acpi_force) {
		printk(KERN_NOTICE "%s detected: force use of pci=noacpi\n",
		       d->ident); 	
		acpi_disable_pci();
	}
	return 0;
}  
#endif

/*
 *	Process the DMI blacklists
 */
 

/*
 *	This will be expanded over time to force things like the APM 
 *	interrupt mask settings according to the laptop
 */
 
static __initdata struct dmi_blacklist dmi_blacklist[]={

	{ broken_toshiba_keyboard, "Toshiba Satellite 4030cdt", { /* Keyboard generates spurious repeats */
			MATCH(DMI_PRODUCT_NAME, "S4030CDT/4.3"),
			NO_MATCH, NO_MATCH, NO_MATCH
			} },
#ifdef CONFIG_ACPI_SLEEP
	{ reset_videomode_after_s3, "Toshiba Satellite 4030cdt", { /* Reset video mode after returning from ACPI S3 sleep */
			MATCH(DMI_PRODUCT_NAME, "S4030CDT/4.3"),
			NO_MATCH, NO_MATCH, NO_MATCH
			} },
#endif

#ifdef	CONFIG_ACPI_BOOT
	/*
	 * If your system is blacklisted here, but you find that acpi=force
	 * works for you, please contact acpi-devel@sourceforge.net
	 */

	/*
	 *	Boxes that need ACPI disabled
	 */

	{ dmi_disable_acpi, "IBM Thinkpad", {
			MATCH(DMI_BOARD_VENDOR, "IBM"),
			MATCH(DMI_BOARD_NAME, "2629H1G"),
			NO_MATCH, NO_MATCH }},

	/*
	 *	Boxes that need acpi=ht 
	 */

	{ force_acpi_ht, "FSC Primergy T850", {
			MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
			MATCH(DMI_PRODUCT_NAME, "PRIMERGY T850"),
			NO_MATCH, NO_MATCH }},

	{ force_acpi_ht, "DELL GX240", {
			MATCH(DMI_BOARD_VENDOR, "Dell Computer Corporation"),
			MATCH(DMI_BOARD_NAME, "OptiPlex GX240"),
			NO_MATCH, NO_MATCH }},

	{ force_acpi_ht, "HP VISUALIZE NT Workstation", {
			MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"),
			MATCH(DMI_PRODUCT_NAME, "HP VISUALIZE NT Workstation"),
			NO_MATCH, NO_MATCH }},

	{ force_acpi_ht, "Compaq Workstation W8000", {
			MATCH(DMI_SYS_VENDOR, "Compaq"),
			MATCH(DMI_PRODUCT_NAME, "Workstation W8000"),
			NO_MATCH, NO_MATCH }},

	{ force_acpi_ht, "ASUS P4B266", {
			MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
			MATCH(DMI_BOARD_NAME, "P4B266"),
			NO_MATCH, NO_MATCH }},

	{ force_acpi_ht, "ASUS P2B-DS", {
			MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
			MATCH(DMI_BOARD_NAME, "P2B-DS"),
			NO_MATCH, NO_MATCH }},

	{ force_acpi_ht, "ASUS CUR-DLS", {
			MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
			MATCH(DMI_BOARD_NAME, "CUR-DLS"),
			NO_MATCH, NO_MATCH }},

	{ force_acpi_ht, "ABIT i440BX-W83977", {
			MATCH(DMI_BOARD_VENDOR, "ABIT <http://www.abit.com>"),
			MATCH(DMI_BOARD_NAME, "i440BX-W83977 (BP6)"),
			NO_MATCH, NO_MATCH }},

	{ force_acpi_ht, "IBM Bladecenter", {
			MATCH(DMI_BOARD_VENDOR, "IBM"),
			MATCH(DMI_BOARD_NAME, "IBM eServer BladeCenter HS20"),
			NO_MATCH, NO_MATCH }},

	{ force_acpi_ht, "IBM eServer xSeries 360", {
			MATCH(DMI_BOARD_VENDOR, "IBM"),
			MATCH(DMI_BOARD_NAME, "eServer xSeries 360"),
			NO_MATCH, NO_MATCH }},

	{ force_acpi_ht, "IBM eserver xSeries 330", {
			MATCH(DMI_BOARD_VENDOR, "IBM"),
			MATCH(DMI_BOARD_NAME, "eserver xSeries 330"),
			NO_MATCH, NO_MATCH }},

	{ force_acpi_ht, "IBM eserver xSeries 440", {
			MATCH(DMI_BOARD_VENDOR, "IBM"),
			MATCH(DMI_PRODUCT_NAME, "eserver xSeries 440"),
			NO_MATCH, NO_MATCH }},

#endif	// CONFIG_ACPI_BOOT

#ifdef	CONFIG_ACPI_PCI
	/*
	 *	Boxes that need ACPI PCI IRQ routing disabled
	 */

	{ disable_acpi_irq, "ASUS A7V", {
			MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC"),
			MATCH(DMI_BOARD_NAME, "<A7V>"),
			/* newer BIOS, Revision 1011, does work */
			MATCH(DMI_BIOS_VERSION, "ASUS A7V ACPI BIOS Revision 1007"),
			NO_MATCH }},

	/*
	 *	Boxes that need ACPI PCI IRQ routing and PCI scan disabled
	 */
	{ disable_acpi_pci, "ASUS PR-DLS", {	/* _BBN 0 bug */
			MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
			MATCH(DMI_BOARD_NAME, "PR-DLS"),
			MATCH(DMI_BIOS_VERSION, "ASUS PR-DLS ACPI BIOS Revision 1010"),
			MATCH(DMI_BIOS_DATE, "03/21/2003") }},

 	{ disable_acpi_pci, "Acer TravelMate 36x Laptop", {
 			MATCH(DMI_SYS_VENDOR, "Acer"),
 			MATCH(DMI_PRODUCT_NAME, "TravelMate 360"),
 			NO_MATCH, NO_MATCH
 			} },

#endif

	{ NULL, }
};

/*
 *	Process a DMI table entry. Right now all we care about are the BIOS
 *	and machine entries. For 2.5 we should pull the smbus controller info
 *	out of here.
 */

static void __init dmi_decode(struct dmi_header *dm)
{
#ifdef DMI_DEBUG
	u8 *data = (u8 *)dm;
#endif
	
	switch(dm->type)
	{
		case  0:
			dmi_printk(("BIOS Vendor: %s\n",
				dmi_string(dm, data[4])));
			dmi_save_ident(dm, DMI_BIOS_VENDOR, 4);
			dmi_printk(("BIOS Version: %s\n", 
				dmi_string(dm, data[5])));
			dmi_save_ident(dm, DMI_BIOS_VERSION, 5);
			dmi_printk(("BIOS Release: %s\n",
				dmi_string(dm, data[8])));
			dmi_save_ident(dm, DMI_BIOS_DATE, 8);
			break;
		case 1:
			dmi_printk(("System Vendor: %s\n",
				dmi_string(dm, data[4])));
			dmi_save_ident(dm, DMI_SYS_VENDOR, 4);
			dmi_printk(("Product Name: %s\n",
				dmi_string(dm, data[5])));
			dmi_save_ident(dm, DMI_PRODUCT_NAME, 5);
			dmi_printk(("Version: %s\n",
				dmi_string(dm, data[6])));
			dmi_save_ident(dm, DMI_PRODUCT_VERSION, 6);
			dmi_printk(("Serial Number: %s\n",
				dmi_string(dm, data[7])));
			break;
		case 2:
			dmi_printk(("Board Vendor: %s\n",
				dmi_string(dm, data[4])));
			dmi_save_ident(dm, DMI_BOARD_VENDOR, 4);
			dmi_printk(("Board Name: %s\n",
				dmi_string(dm, data[5])));
			dmi_save_ident(dm, DMI_BOARD_NAME, 5);
			dmi_printk(("Board Version: %s\n",
				dmi_string(dm, data[6])));
			dmi_save_ident(dm, DMI_BOARD_VERSION, 6);
			break;
	}
}

void __init dmi_scan_machine(void)
{
	int err = dmi_iterate(dmi_decode);
	if(err == 0)
 		dmi_check_system(dmi_blacklist);
	else
		printk(KERN_INFO "DMI not present.\n");
}


/**
 *	dmi_check_system - check system DMI data
 *	@list: array of dmi_system_id structures to match against
 *
 *	Walk the blacklist table running matching functions until someone
 *	returns non zero or we hit the end. Callback function is called for
 *	each successfull match. Returns the number of matches.
 */
int dmi_check_system(struct dmi_system_id *list)
{
	int i, count = 0;
	struct dmi_system_id *d = list;

	while (d->ident) {
		for (i = 0; i < ARRAY_SIZE(d->matches); i++) {
			int s = d->matches[i].slot;
			if (s == DMI_NONE)
				continue;
			if (dmi_ident[s] && strstr(dmi_ident[s], d->matches[i].substr))
				continue;
			/* No match */
			goto fail;
		}
		if (d->callback && d->callback(d))
			break;
		count++;
fail:		d++;
	}

	return count;
}

EXPORT_SYMBOL(dmi_check_system);

/**
 *	dmi_get_system_info - return DMI data value
 *	@field: data index (see enum dmi_filed)
 *
 *	Returns one DMI data value, can be used to perform
 *	complex DMI data checks.
 */
char * dmi_get_system_info(int field)
{
	return dmi_ident[field];
}

EXPORT_SYMBOL(dmi_get_system_info);