drivers/mtd/maps/ichxrom.c - third_party/linux - Git at Google

 /*
  * ichxrom.c
  *
  * Normal mappings of chips in physical memory
  * $Id: ichxrom.c,v 1.18 2005/07/07 10:26:20 dwmw2 Exp $
  */

 #include <linux/module.h>
 #include <linux/types.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <asm/io.h>
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/map.h>
 #include <linux/mtd/cfi.h>
 #include <linux/mtd/flashchip.h>
 #include <linux/config.h>
 #include <linux/pci.h>
 #include <linux/pci_ids.h>
 #include <linux/list.h>

 #define xstr(s) str(s)
 #define str(s) #s
 #define MOD_NAME xstr(KBUILD_BASENAME)

 #define ADDRESS_NAME_LEN 18

 #define ROM_PROBE_STEP_SIZE (64*1024) /* 64KiB */

 #define BIOS_CNTL	0x4e
 #define FWH_DEC_EN1	0xE3
 #define FWH_DEC_EN2	0xF0
 #define FWH_SEL1	0xE8
 #define FWH_SEL2	0xEE

 struct ichxrom_window {
 	void __iomem* virt;
 	unsigned long phys;
 	unsigned long size;
 	struct list_head maps;
 	struct resource rsrc;
 	struct pci_dev *pdev;
 };

 struct ichxrom_map_info {
 	struct list_head list;
 	struct map_info map;
 	struct mtd_info *mtd;
 	struct resource rsrc;
 	char map_name[sizeof(MOD_NAME) + 2 + ADDRESS_NAME_LEN];
 };

 static struct ichxrom_window ichxrom_window = {
 	.maps = LIST_HEAD_INIT(ichxrom_window.maps),
 };

 static void ichxrom_cleanup(struct ichxrom_window *window)
 {
 	struct ichxrom_map_info *map, *scratch;
 	u16 word;

 	/* Disable writes through the rom window */
 	pci_read_config_word(window->pdev, BIOS_CNTL, &word);
 	pci_write_config_word(window->pdev, BIOS_CNTL, word & ~1);

 	/* Free all of the mtd devices */
 	list_for_each_entry_safe(map, scratch, &window->maps, list) {
 		if (map->rsrc.parent)
 			release_resource(&map->rsrc);
 		del_mtd_device(map->mtd);
 		map_destroy(map->mtd);
 		list_del(&map->list);
 		kfree(map);
 	}
 	if (window->rsrc.parent)
 		release_resource(&window->rsrc);
 	if (window->virt) {
 		iounmap(window->virt);
 		window->virt = NULL;
 		window->phys = 0;
 		window->size = 0;
 		window->pdev = NULL;
 	}
 }


 static int __devinit ichxrom_init_one (struct pci_dev *pdev,
 	const struct pci_device_id *ent)
 {
 	static char *rom_probe_types[] = { "cfi_probe", "jedec_probe", NULL };
 	struct ichxrom_window *window = &ichxrom_window;
 	struct ichxrom_map_info *map = NULL;
 	unsigned long map_top;
 	u8 byte;
 	u16 word;

 	/* For now I just handle the ichx and I assume there
 	 * are not a lot of resources up at the top of the address
 	 * space.  It is possible to handle other devices in the
 	 * top 16MB but it is very painful.  Also since
 	 * you can only really attach a FWH to an ICHX there
 	 * a number of simplifications you can make.
 	 *
 	 * Also you can page firmware hubs if an 8MB window isn't enough
 	 * but don't currently handle that case either.
 	 */
 	window->pdev = pdev;

 	/* Find a region continuous to the end of the ROM window  */
 	window->phys = 0;
 	pci_read_config_byte(pdev, FWH_DEC_EN1, &byte);
 	if (byte == 0xff) {
 		window->phys = 0xffc00000;
 		pci_read_config_byte(pdev, FWH_DEC_EN2, &byte);
 		if ((byte & 0x0f) == 0x0f) {
 			window->phys = 0xff400000;
 		}
 		else if ((byte & 0x0e) == 0x0e) {
 			window->phys = 0xff500000;
 		}
 		else if ((byte & 0x0c) == 0x0c) {
 			window->phys = 0xff600000;
 		}
 		else if ((byte & 0x08) == 0x08) {
 			window->phys = 0xff700000;
 		}
 	}
 	else if ((byte & 0xfe) == 0xfe) {
 		window->phys = 0xffc80000;
 	}
 	else if ((byte & 0xfc) == 0xfc) {
 		window->phys = 0xffd00000;
 	}
 	else if ((byte & 0xf8) == 0xf8) {
 		window->phys = 0xffd80000;
 	}
 	else if ((byte & 0xf0) == 0xf0) {
 		window->phys = 0xffe00000;
 	}
 	else if ((byte & 0xe0) == 0xe0) {
 		window->phys = 0xffe80000;
 	}
 	else if ((byte & 0xc0) == 0xc0) {
 		window->phys = 0xfff00000;
 	}
 	else if ((byte & 0x80) == 0x80) {
 		window->phys = 0xfff80000;
 	}

 	if (window->phys == 0) {
 		printk(KERN_ERR MOD_NAME ": Rom window is closed\n");
 		goto out;
 	}
 	window->phys -= 0x400000UL;
 	window->size = (0xffffffffUL - window->phys) + 1UL;

 	/* Enable writes through the rom window */
 	pci_read_config_word(pdev, BIOS_CNTL, &word);
 	if (!(word & 1)  && (word & (1<<1))) {
 		/* The BIOS will generate an error if I enable
 		 * this device, so don't even try.
 		 */
 		printk(KERN_ERR MOD_NAME ": firmware access control, I can't enable writes\n");
 		goto out;
 	}
 	pci_write_config_word(pdev, BIOS_CNTL, word | 1);

 	/*
 	 * Try to reserve the window mem region.  If this fails then
 	 * it is likely due to the window being "reseved" by the BIOS.
 	 */
 	window->rsrc.name = MOD_NAME;
 	window->rsrc.start = window->phys;
 	window->rsrc.end   = window->phys + window->size - 1;
 	window->rsrc.flags = IORESOURCE_MEM | IORESOURCE_BUSY;
 	if (request_resource(&iomem_resource, &window->rsrc)) {
 		window->rsrc.parent = NULL;
 		printk(KERN_DEBUG MOD_NAME
 			": %s(): Unable to register resource"
 			" 0x%.08lx-0x%.08lx - kernel bug?\n",
 			__func__,
 			window->rsrc.start, window->rsrc.end);
 	}

 	/* Map the firmware hub into my address space. */
 	window->virt = ioremap_nocache(window->phys, window->size);
 	if (!window->virt) {
 		printk(KERN_ERR MOD_NAME ": ioremap(%08lx, %08lx) failed\n",
 			window->phys, window->size);
 		goto out;
 	}

 	/* Get the first address to look for an rom chip at */
 	map_top = window->phys;
 	if ((window->phys & 0x3fffff) != 0) {
 		map_top = window->phys + 0x400000;
 	}
 #if 1
 	/* The probe sequence run over the firmware hub lock
 	 * registers sets them to 0x7 (no access).
 	 * Probe at most the last 4M of the address space.
 	 */
 	if (map_top < 0xffc00000) {
 		map_top = 0xffc00000;
 	}
 #endif
 	/* Loop through and look for rom chips */
 	while((map_top - 1) < 0xffffffffUL) {
 		struct cfi_private *cfi;
 		unsigned long offset;
 		int i;

 		if (!map) {
 			map = kmalloc(sizeof(*map), GFP_KERNEL);
 		}
 		if (!map) {
 			printk(KERN_ERR MOD_NAME ": kmalloc failed");
 			goto out;
 		}
 		memset(map, 0, sizeof(*map));
 		INIT_LIST_HEAD(&map->list);
 		map->map.name = map->map_name;
 		map->map.phys = map_top;
 		offset = map_top - window->phys;
 		map->map.virt = (void __iomem *)
 			(((unsigned long)(window->virt)) + offset);
 		map->map.size = 0xffffffffUL - map_top + 1UL;
 		/* Set the name of the map to the address I am trying */
 		sprintf(map->map_name, "%s @%08lx",
 			MOD_NAME, map->map.phys);

 		/* Firmware hubs only use vpp when being programmed
 		 * in a factory setting.  So in-place programming
 		 * needs to use a different method.
 		 */
 		for(map->map.bankwidth = 32; map->map.bankwidth;
 			map->map.bankwidth >>= 1)
 		{
 			char **probe_type;
 			/* Skip bankwidths that are not supported */
 			if (!map_bankwidth_supported(map->map.bankwidth))
 				continue;

 			/* Setup the map methods */
 			simple_map_init(&map->map);

 			/* Try all of the probe methods */
 			probe_type = rom_probe_types;
 			for(; *probe_type; probe_type++) {
 				map->mtd = do_map_probe(*probe_type, &map->map);
 				if (map->mtd)
 					goto found;
 			}
 		}
 		map_top += ROM_PROBE_STEP_SIZE;
 		continue;
 	found:
 		/* Trim the size if we are larger than the map */
 		if (map->mtd->size > map->map.size) {
 			printk(KERN_WARNING MOD_NAME
 				" rom(%u) larger than window(%lu). fixing...\n",
 				map->mtd->size, map->map.size);
 			map->mtd->size = map->map.size;
 		}
 		if (window->rsrc.parent) {
 			/*
 			 * Registering the MTD device in iomem may not be possible
 			 * if there is a BIOS "reserved" and BUSY range.  If this
 			 * fails then continue anyway.
 			 */
 			map->rsrc.name  = map->map_name;
 			map->rsrc.start = map->map.phys;
 			map->rsrc.end   = map->map.phys + map->mtd->size - 1;
 			map->rsrc.flags = IORESOURCE_MEM | IORESOURCE_BUSY;
 			if (request_resource(&window->rsrc, &map->rsrc)) {
 				printk(KERN_ERR MOD_NAME
 					": cannot reserve MTD resource\n");
 				map->rsrc.parent = NULL;
 			}
 		}

 		/* Make the whole region visible in the map */
 		map->map.virt = window->virt;
 		map->map.phys = window->phys;
 		cfi = map->map.fldrv_priv;
 		for(i = 0; i < cfi->numchips; i++) {
 			cfi->chips[i].start += offset;
 		}

 		/* Now that the mtd devices is complete claim and export it */
 		map->mtd->owner = THIS_MODULE;
 		if (add_mtd_device(map->mtd)) {
 			map_destroy(map->mtd);
 			map->mtd = NULL;
 			goto out;
 		}


 		/* Calculate the new value of map_top */
 		map_top += map->mtd->size;

 		/* File away the map structure */
 		list_add(&map->list, &window->maps);
 		map = NULL;
 	}

  out:
 	/* Free any left over map structures */
 	if (map) {
 		kfree(map);
 	}
 	/* See if I have any map structures */
 	if (list_empty(&window->maps)) {
 		ichxrom_cleanup(window);
 		return -ENODEV;
 	}
 	return 0;
 }


 static void __devexit ichxrom_remove_one (struct pci_dev *pdev)
 {
 	struct ichxrom_window *window = &ichxrom_window;
 	ichxrom_cleanup(window);
 }

 static struct pci_device_id ichxrom_pci_tbl[] __devinitdata = {
 	{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0,
 	  PCI_ANY_ID, PCI_ANY_ID, },
 	{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0,
 	  PCI_ANY_ID, PCI_ANY_ID, },
 	{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0,
 	  PCI_ANY_ID, PCI_ANY_ID, },
 	{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0,
 	  PCI_ANY_ID, PCI_ANY_ID, },
 	{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_1,
 	  PCI_ANY_ID, PCI_ANY_ID, },
 	{ 0, },
 };

 #if 0
 MODULE_DEVICE_TABLE(pci, ichxrom_pci_tbl);

 static struct pci_driver ichxrom_driver = {
 	.name =		MOD_NAME,
 	.id_table =	ichxrom_pci_tbl,
 	.probe =	ichxrom_init_one,
 	.remove =	ichxrom_remove_one,
 };
 #endif

 static int __init init_ichxrom(void)
 {
 	struct pci_dev *pdev;
 	struct pci_device_id *id;

 	pdev = NULL;
 	for (id = ichxrom_pci_tbl; id->vendor; id++) {
 		pdev = pci_find_device(id->vendor, id->device, NULL);
 		if (pdev) {
 			break;
 		}
 	}
 	if (pdev) {
 		return ichxrom_init_one(pdev, &ichxrom_pci_tbl[0]);
 	}
 	return -ENXIO;
 #if 0
 	return pci_register_driver(&ichxrom_driver);
 #endif
 }

 static void __exit cleanup_ichxrom(void)
 {
 	ichxrom_remove_one(ichxrom_window.pdev);
 }

 module_init(init_ichxrom);
 module_exit(cleanup_ichxrom);

 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Eric Biederman <ebiederman@lnxi.com>");
 MODULE_DESCRIPTION("MTD map driver for BIOS chips on the ICHX southbridge");
	/*
	* ichxrom.c
	*
	* Normal mappings of chips in physical memory
	* $Id: ichxrom.c,v 1.18 2005/07/07 10:26:20 dwmw2 Exp $
	*/

	#include <linux/module.h>
	#include <linux/types.h>
	#include <linux/kernel.h>
	#include <linux/init.h>
	#include <asm/io.h>
	#include <linux/mtd/mtd.h>
	#include <linux/mtd/map.h>
	#include <linux/mtd/cfi.h>
	#include <linux/mtd/flashchip.h>
	#include <linux/config.h>
	#include <linux/pci.h>
	#include <linux/pci_ids.h>
	#include <linux/list.h>

	#define xstr(s) str(s)
	#define str(s) #s
	#define MOD_NAME xstr(KBUILD_BASENAME)

	#define ADDRESS_NAME_LEN 18

	#define ROM_PROBE_STEP_SIZE (641024) / 64KiB */

	#define BIOS_CNTL 0x4e
	#define FWH_DEC_EN1 0xE3
	#define FWH_DEC_EN2 0xF0
	#define FWH_SEL1 0xE8
	#define FWH_SEL2 0xEE

	struct ichxrom_window {
	void __iomem* virt;
	unsigned long phys;
	unsigned long size;
	struct list_head maps;
	struct resource rsrc;
	struct pci_dev *pdev;
	};

	struct ichxrom_map_info {
	struct list_head list;
	struct map_info map;
	struct mtd_info *mtd;
	struct resource rsrc;
	char map_name[sizeof(MOD_NAME) + 2 + ADDRESS_NAME_LEN];
	};

	static struct ichxrom_window ichxrom_window = {
	.maps = LIST_HEAD_INIT(ichxrom_window.maps),
	};

	static void ichxrom_cleanup(struct ichxrom_window *window)
	{
	struct ichxrom_map_info map, scratch;
	u16 word;

	/* Disable writes through the rom window */
	pci_read_config_word(window->pdev, BIOS_CNTL, &word);
	pci_write_config_word(window->pdev, BIOS_CNTL, word & ~1);

	/* Free all of the mtd devices */
	list_for_each_entry_safe(map, scratch, &window->maps, list) {
	if (map->rsrc.parent)
	release_resource(&map->rsrc);
	del_mtd_device(map->mtd);
	map_destroy(map->mtd);
	list_del(&map->list);
	kfree(map);
	}
	if (window->rsrc.parent)
	release_resource(&window->rsrc);
	if (window->virt) {
	iounmap(window->virt);
	window->virt = NULL;
	window->phys = 0;
	window->size = 0;
	window->pdev = NULL;
	}
	}


	static int __devinit ichxrom_init_one (struct pci_dev *pdev,
	const struct pci_device_id *ent)
	{
	static char *rom_probe_types[] = { "cfi_probe", "jedec_probe", NULL };
	struct ichxrom_window *window = &ichxrom_window;
	struct ichxrom_map_info *map = NULL;
	unsigned long map_top;
	u8 byte;
	u16 word;

	/* For now I just handle the ichx and I assume there
	* are not a lot of resources up at the top of the address
	* space. It is possible to handle other devices in the
	* top 16MB but it is very painful. Also since
	* you can only really attach a FWH to an ICHX there
	* a number of simplifications you can make.
	*
	* Also you can page firmware hubs if an 8MB window isn't enough
	* but don't currently handle that case either.
	*/
	window->pdev = pdev;

	/* Find a region continuous to the end of the ROM window */
	window->phys = 0;
	pci_read_config_byte(pdev, FWH_DEC_EN1, &byte);
	if (byte == 0xff) {
	window->phys = 0xffc00000;
	pci_read_config_byte(pdev, FWH_DEC_EN2, &byte);
	if ((byte & 0x0f) == 0x0f) {
	window->phys = 0xff400000;
	}
	else if ((byte & 0x0e) == 0x0e) {
	window->phys = 0xff500000;
	}
	else if ((byte & 0x0c) == 0x0c) {
	window->phys = 0xff600000;
	}
	else if ((byte & 0x08) == 0x08) {
	window->phys = 0xff700000;
	}
	}
	else if ((byte & 0xfe) == 0xfe) {
	window->phys = 0xffc80000;
	}
	else if ((byte & 0xfc) == 0xfc) {
	window->phys = 0xffd00000;
	}
	else if ((byte & 0xf8) == 0xf8) {
	window->phys = 0xffd80000;
	}
	else if ((byte & 0xf0) == 0xf0) {
	window->phys = 0xffe00000;
	}
	else if ((byte & 0xe0) == 0xe0) {
	window->phys = 0xffe80000;
	}
	else if ((byte & 0xc0) == 0xc0) {
	window->phys = 0xfff00000;
	}
	else if ((byte & 0x80) == 0x80) {
	window->phys = 0xfff80000;
	}

	if (window->phys == 0) {
	printk(KERN_ERR MOD_NAME ": Rom window is closed\n");
	goto out;
	}
	window->phys -= 0x400000UL;
	window->size = (0xffffffffUL - window->phys) + 1UL;

	/* Enable writes through the rom window */
	pci_read_config_word(pdev, BIOS_CNTL, &word);
	if (!(word & 1) && (word & (1<<1))) {
	/* The BIOS will generate an error if I enable
	* this device, so don't even try.
	*/
	printk(KERN_ERR MOD_NAME ": firmware access control, I can't enable writes\n");
	goto out;
	}
	pci_write_config_word(pdev, BIOS_CNTL, word \| 1);

	/*
	* Try to reserve the window mem region. If this fails then
	* it is likely due to the window being "reseved" by the BIOS.
	*/
	window->rsrc.name = MOD_NAME;
	window->rsrc.start = window->phys;
	window->rsrc.end = window->phys + window->size - 1;
	window->rsrc.flags = IORESOURCE_MEM \| IORESOURCE_BUSY;
	if (request_resource(&iomem_resource, &window->rsrc)) {
	window->rsrc.parent = NULL;
	printk(KERN_DEBUG MOD_NAME
	": %s(): Unable to register resource"
	" 0x%.08lx-0x%.08lx - kernel bug?\n",
	__func__,
	window->rsrc.start, window->rsrc.end);
	}

	/* Map the firmware hub into my address space. */
	window->virt = ioremap_nocache(window->phys, window->size);
	if (!window->virt) {
	printk(KERN_ERR MOD_NAME ": ioremap(%08lx, %08lx) failed\n",
	window->phys, window->size);
	goto out;
	}

	/* Get the first address to look for an rom chip at */
	map_top = window->phys;
	if ((window->phys & 0x3fffff) != 0) {
	map_top = window->phys + 0x400000;
	}
	#if 1
	/* The probe sequence run over the firmware hub lock
	* registers sets them to 0x7 (no access).
	* Probe at most the last 4M of the address space.
	*/
	if (map_top < 0xffc00000) {
	map_top = 0xffc00000;
	}
	#endif
	/* Loop through and look for rom chips */
	while((map_top - 1) < 0xffffffffUL) {
	struct cfi_private *cfi;
	unsigned long offset;
	int i;

	if (!map) {
	map = kmalloc(sizeof(*map), GFP_KERNEL);
	}
	if (!map) {
	printk(KERN_ERR MOD_NAME ": kmalloc failed");
	goto out;
	}
	memset(map, 0, sizeof(*map));
	INIT_LIST_HEAD(&map->list);
	map->map.name = map->map_name;
	map->map.phys = map_top;
	offset = map_top - window->phys;
	map->map.virt = (void __iomem *)
	(((unsigned long)(window->virt)) + offset);
	map->map.size = 0xffffffffUL - map_top + 1UL;
	/* Set the name of the map to the address I am trying */
	sprintf(map->map_name, "%s @%08lx",
	MOD_NAME, map->map.phys);

	/* Firmware hubs only use vpp when being programmed
	* in a factory setting. So in-place programming
	* needs to use a different method.
	*/
	for(map->map.bankwidth = 32; map->map.bankwidth;
	map->map.bankwidth >>= 1)
	{
	char **probe_type;
	/* Skip bankwidths that are not supported */
	if (!map_bankwidth_supported(map->map.bankwidth))
	continue;

	/* Setup the map methods */
	simple_map_init(&map->map);

	/* Try all of the probe methods */
	probe_type = rom_probe_types;
	for(; *probe_type; probe_type++) {
	map->mtd = do_map_probe(*probe_type, &map->map);
	if (map->mtd)
	goto found;
	}
	}
	map_top += ROM_PROBE_STEP_SIZE;
	continue;
	found:
	/* Trim the size if we are larger than the map */
	if (map->mtd->size > map->map.size) {
	printk(KERN_WARNING MOD_NAME
	" rom(%u) larger than window(%lu). fixing...\n",
	map->mtd->size, map->map.size);
	map->mtd->size = map->map.size;
	}
	if (window->rsrc.parent) {
	/*
	* Registering the MTD device in iomem may not be possible
	* if there is a BIOS "reserved" and BUSY range. If this
	* fails then continue anyway.
	*/
	map->rsrc.name = map->map_name;
	map->rsrc.start = map->map.phys;
	map->rsrc.end = map->map.phys + map->mtd->size - 1;
	map->rsrc.flags = IORESOURCE_MEM \| IORESOURCE_BUSY;
	if (request_resource(&window->rsrc, &map->rsrc)) {
	printk(KERN_ERR MOD_NAME
	": cannot reserve MTD resource\n");
	map->rsrc.parent = NULL;
	}
	}

	/* Make the whole region visible in the map */
	map->map.virt = window->virt;
	map->map.phys = window->phys;
	cfi = map->map.fldrv_priv;
	for(i = 0; i < cfi->numchips; i++) {
	cfi->chips[i].start += offset;
	}

	/* Now that the mtd devices is complete claim and export it */
	map->mtd->owner = THIS_MODULE;
	if (add_mtd_device(map->mtd)) {
	map_destroy(map->mtd);
	map->mtd = NULL;
	goto out;
	}


	/* Calculate the new value of map_top */
	map_top += map->mtd->size;

	/* File away the map structure */
	list_add(&map->list, &window->maps);
	map = NULL;
	}

	out:
	/* Free any left over map structures */
	if (map) {
	kfree(map);
	}
	/* See if I have any map structures */
	if (list_empty(&window->maps)) {
	ichxrom_cleanup(window);
	return -ENODEV;
	}
	return 0;
	}


	static void __devexit ichxrom_remove_one (struct pci_dev *pdev)
	{
	struct ichxrom_window *window = &ichxrom_window;
	ichxrom_cleanup(window);
	}

	static struct pci_device_id ichxrom_pci_tbl[] __devinitdata = {
	{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0,
	PCI_ANY_ID, PCI_ANY_ID, },
	{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0,
	PCI_ANY_ID, PCI_ANY_ID, },
	{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0,
	PCI_ANY_ID, PCI_ANY_ID, },
	{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0,
	PCI_ANY_ID, PCI_ANY_ID, },
	{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_1,
	PCI_ANY_ID, PCI_ANY_ID, },
	{ 0, },
	};

	#if 0
	MODULE_DEVICE_TABLE(pci, ichxrom_pci_tbl);

	static struct pci_driver ichxrom_driver = {
	.name = MOD_NAME,
	.id_table = ichxrom_pci_tbl,
	.probe = ichxrom_init_one,
	.remove = ichxrom_remove_one,
	};
	#endif

	static int __init init_ichxrom(void)
	{
	struct pci_dev *pdev;
	struct pci_device_id *id;

	pdev = NULL;
	for (id = ichxrom_pci_tbl; id->vendor; id++) {
	pdev = pci_find_device(id->vendor, id->device, NULL);
	if (pdev) {
	break;
	}
	}
	if (pdev) {
	return ichxrom_init_one(pdev, &ichxrom_pci_tbl[0]);
	}
	return -ENXIO;
	#if 0
	return pci_register_driver(&ichxrom_driver);
	#endif
	}

	static void __exit cleanup_ichxrom(void)
	{
	ichxrom_remove_one(ichxrom_window.pdev);
	}

	module_init(init_ichxrom);
	module_exit(cleanup_ichxrom);

	MODULE_LICENSE("GPL");
	MODULE_AUTHOR("Eric Biederman <ebiederman@lnxi.com>");
	MODULE_DESCRIPTION("MTD map driver for BIOS chips on the ICHX southbridge");