1 files changed, 356 insertions, 0 deletions
diff --git a/drivers/mtd/maps/ck804xrom.c b/drivers/mtd/maps/ck804xrom.c
new file mode 100644
index 000000000000..238d42e88ec5
--- /dev/null
+++ b/drivers/mtd/maps/ck804xrom.c
@@ -0,0 +1,356 @@
+/*
+ * ck804xrom.c
+ *
+ * Normal mappings of chips in physical memory
+ *
+ * Dave Olsen <dolsen@lnxi.com>
+ * Ryan Jackson <rjackson@lnxi.com>
+ */
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/version.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/pci.h>
+#include <linux/pci_ids.h>
+#include <linux/list.h>
+#define MOD_NAME KBUILD_BASENAME
+#define ADDRESS_NAME_LEN 18
+#define ROM_PROBE_STEP_SIZE (64*1024)
+struct ck804xrom_window {
+        void __iomem *virt;
+        unsigned long phys;
+        unsigned long size;
+        struct list_head maps;
+        struct resource rsrc;
+        struct pci_dev *pdev;
+};
+struct ck804xrom_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];
+};
+/* The 2 bits controlling the window size are often set to allow reading
+ * the BIOS, but too small to allow writing, since the lock registers are
+ * 4MiB lower in the address space than the data.
+ *
+ * This is intended to prevent flashing the bios, perhaps accidentally.
+ *
+ * This parameter allows the normal driver to override the BIOS settings.
+ *
+ * The bits are 6 and 7.  If both bits are set, it is a 5MiB window.
+ * If only the 7 Bit is set, it is a 4MiB window.  Otherwise, a
+ * 64KiB window.
+ *
+ */
+static uint win_size_bits = 0;
+module_param(win_size_bits, uint, 0);
+MODULE_PARM_DESC(win_size_bits, "ROM window size bits override for 0x88 byte, normally set by BIOS.");
+static struct ck804xrom_window ck804xrom_window = {
+        .maps = LIST_HEAD_INIT(ck804xrom_window.maps),
+};
+static void ck804xrom_cleanup(struct ck804xrom_window *window)
+{
+        struct ck804xrom_map_info *map, *scratch;
+        u8 byte;
+        if (window->pdev) {
+                /* Disable writes through the rom window */
+                pci_read_config_byte(window->pdev, 0x6d, &byte);
+                pci_write_config_byte(window->pdev, 0x6d, byte & ~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;
+        }
+        pci_dev_put(window->pdev);
+}
+static int __devinit ck804xrom_init_one (struct pci_dev *pdev,
+        const struct pci_device_id *ent)
+{
+        static char *rom_probe_types[] = { "cfi_probe", "jedec_probe", NULL };
+        u8 byte;
+        struct ck804xrom_window *window = &ck804xrom_window;
+        struct ck804xrom_map_info *map = NULL;
+        unsigned long map_top;
+        /* Remember the pci dev I find the window in */
+        window->pdev = pci_dev_get(pdev);
+        /* Enable the selected rom window.  This is often incorrectly
+         * set up by the BIOS, and the 4MiB offset for the lock registers
+         * requires the full 5MiB of window space.
+         *
+         * This 'write, then read' approach leaves the bits for
+         * other uses of the hardware info.
+         */
+        pci_read_config_byte(pdev, 0x88, &byte);
+        pci_write_config_byte(pdev, 0x88, byte | win_size_bits );
+        /* Assume the rom window is properly setup, and find it's size */
+        pci_read_config_byte(pdev, 0x88, &byte);
+        if ((byte & ((1<<7)|(1<<6))) == ((1<<7)|(1<<6)))
+                window->phys = 0xffb00000; /* 5MiB */
+        else if ((byte & (1<<7)) == (1<<7))
+                window->phys = 0xffc00000; /* 4MiB */
+        else
+                window->phys = 0xffff0000; /* 64KiB */
+        window->size = 0xffffffffUL - window->phys + 1UL;
+        /*
+         * Try to reserve the window mem region.  If this fails then
+         * it is likely due to a fragment of the window being
+         * "reserved" by the BIOS.  In the case that the
+         * request_mem_region() fails then once the rom size is
+         * discovered we will try to reserve the unreserved fragment.
+         */
+        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_ERR MOD_NAME
+                        " %s(): Unable to register resource"
+                        " 0x%.016llx-0x%.016llx - kernel bug?\n",
+                        __func__,
+                        (unsigned long long)window->rsrc.start,
+                        (unsigned long long)window->rsrc.end);
+        }
+        /* Enable writes through the rom window */
+        pci_read_config_byte(pdev, 0x6d, &byte);
+        pci_write_config_byte(pdev, 0x6d, byte | 1);
+        /* FIXME handle registers 0x80 - 0x8C the bios region locks */
+        /* For write accesses caches are useless */
+        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 a rom chip at */
+        map_top = window->phys;
+#if 1
+        /* The probe sequence run over the firmware hub lock
+         * registers sets them to 0x7 (no access).
+         * Probe at most the last 4MiB of the address space.
+         */
+        if (map_top < 0xffc00000)
+                map_top = 0xffc00000;
+#endif
+        /* Loop  through and look for rom chips.  Since we don't know the
+         * starting address for each chip, probe every ROM_PROBE_STEP_SIZE
+         * bytes from the starting address of the window.
+         */
+        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);
+                /* There is no generic VPP support */
+                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)) {
+                ck804xrom_cleanup(window);
+                return -ENODEV;
+        }
+        return 0;
+}
+static void __devexit ck804xrom_remove_one (struct pci_dev *pdev)
+{
+        struct ck804xrom_window *window = &ck804xrom_window;
+        ck804xrom_cleanup(window);
+}
+static struct pci_device_id ck804xrom_pci_tbl[] = {
+        { PCI_VENDOR_ID_NVIDIA, 0x0051,
+        PCI_ANY_ID, PCI_ANY_ID, }, /* nvidia ck804 */
+        { 0, }
+};
+MODULE_DEVICE_TABLE(pci, ck804xrom_pci_tbl);
+#if 0
+static struct pci_driver ck804xrom_driver = {
+        .name =         MOD_NAME,
+        .id_table =     ck804xrom_pci_tbl,
+        .probe =        ck804xrom_init_one,
+        .remove =       ck804xrom_remove_one,
+};
+#endif
+static int __init init_ck804xrom(void)
+{
+        struct pci_dev *pdev;
+        struct pci_device_id *id;
+        int retVal;
+        pdev = NULL;
+        for(id = ck804xrom_pci_tbl; id->vendor; id++) {
+                pdev = pci_find_device(id->vendor, id->device, NULL);
+                if (pdev)
+                        break;
+        }
+        if (pdev) {
+                retVal = ck804xrom_init_one(pdev, &ck804xrom_pci_tbl[0]);
+                pci_dev_put(pdev);
+                return retVal;
+        }
+        return -ENXIO;
+#if 0
+        return pci_module_init(&ck804xrom_driver);
+#endif
+}
+static void __exit cleanup_ck804xrom(void)
+{
+        ck804xrom_remove_one(ck804xrom_window.pdev);
+}
+module_init(init_ck804xrom);
+module_exit(cleanup_ck804xrom);
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Eric Biederman <ebiederman@lnxi.com>, Dave Olsen <dolsen@lnxi.com>");
+MODULE_DESCRIPTION("MTD map driver for BIOS chips on the Nvidia ck804 southbridge");

diff --git a/drivers/mtd/maps/ck804xrom.c b/drivers/mtd/maps/ck804xrom.c new file mode 100644 index 000000000000..238d42e88ec5 --- /dev/null +++ b/drivers/mtd/maps/ck804xrom.c
@@ -0,0 +1,356 @@
	1	/*
	2	* ck804xrom.c
	3	*
	4	* Normal mappings of chips in physical memory
	5	*
	6	* Dave Olsen <dolsen@lnxi.com>
	7	* Ryan Jackson <rjackson@lnxi.com>
	8	*/
	9
	10	#include <linux/module.h>
	11	#include <linux/types.h>
	12	#include <linux/version.h>
	13	#include <linux/kernel.h>
	14	#include <linux/init.h>
	15	#include <asm/io.h>
	16	#include <linux/mtd/mtd.h>
	17	#include <linux/mtd/map.h>
	18	#include <linux/mtd/cfi.h>
	19	#include <linux/mtd/flashchip.h>
	20	#include <linux/pci.h>
	21	#include <linux/pci_ids.h>
	22	#include <linux/list.h>
	23
	24
	25	#define MOD_NAME KBUILD_BASENAME
	26
	27	#define ADDRESS_NAME_LEN 18
	28
	29	#define ROM_PROBE_STEP_SIZE (64*1024)
	30
	31	struct ck804xrom_window {
	32	void __iomem *virt;
	33	unsigned long phys;
	34	unsigned long size;
	35	struct list_head maps;
	36	struct resource rsrc;
	37	struct pci_dev *pdev;
	38	};
	39
	40	struct ck804xrom_map_info {
	41	struct list_head list;
	42	struct map_info map;
	43	struct mtd_info *mtd;
	44	struct resource rsrc;
	45	char map_name[sizeof(MOD_NAME) + 2 + ADDRESS_NAME_LEN];
	46	};
	47
	48
	49	/* The 2 bits controlling the window size are often set to allow reading
	50	* the BIOS, but too small to allow writing, since the lock registers are
	51	* 4MiB lower in the address space than the data.
	52	*
	53	* This is intended to prevent flashing the bios, perhaps accidentally.
	54	*
	55	* This parameter allows the normal driver to override the BIOS settings.
	56	*
	57	* The bits are 6 and 7. If both bits are set, it is a 5MiB window.
	58	* If only the 7 Bit is set, it is a 4MiB window. Otherwise, a
	59	* 64KiB window.
	60	*
	61	*/
	62	static uint win_size_bits = 0;
	63	module_param(win_size_bits, uint, 0);
	64	MODULE_PARM_DESC(win_size_bits, "ROM window size bits override for 0x88 byte, normally set by BIOS.");
	65
	66	static struct ck804xrom_window ck804xrom_window = {
	67	.maps = LIST_HEAD_INIT(ck804xrom_window.maps),
	68	};
	69
	70	static void ck804xrom_cleanup(struct ck804xrom_window *window)
	71	{
	72	struct ck804xrom_map_info map, scratch;
	73	u8 byte;
	74
	75	if (window->pdev) {
	76	/* Disable writes through the rom window */
	77	pci_read_config_byte(window->pdev, 0x6d, &byte);
	78	pci_write_config_byte(window->pdev, 0x6d, byte & ~1);
	79	}
	80
	81	/* Free all of the mtd devices */
	82	list_for_each_entry_safe(map, scratch, &window->maps, list) {
	83	if (map->rsrc.parent)
	84	release_resource(&map->rsrc);
	85
	86	del_mtd_device(map->mtd);
	87	map_destroy(map->mtd);
	88	list_del(&map->list);
	89	kfree(map);
	90	}
	91	if (window->rsrc.parent)
	92	release_resource(&window->rsrc);
	93
	94	if (window->virt) {
	95	iounmap(window->virt);
	96	window->virt = NULL;
	97	window->phys = 0;
	98	window->size = 0;
	99	}
	100	pci_dev_put(window->pdev);
	101	}
	102
	103
	104	static int __devinit ck804xrom_init_one (struct pci_dev *pdev,
	105	const struct pci_device_id *ent)
	106	{
	107	static char *rom_probe_types[] = { "cfi_probe", "jedec_probe", NULL };
	108	u8 byte;
	109	struct ck804xrom_window *window = &ck804xrom_window;
	110	struct ck804xrom_map_info *map = NULL;
	111	unsigned long map_top;
	112
	113	/* Remember the pci dev I find the window in */
	114	window->pdev = pci_dev_get(pdev);
	115
	116	/* Enable the selected rom window. This is often incorrectly
	117	* set up by the BIOS, and the 4MiB offset for the lock registers
	118	* requires the full 5MiB of window space.
	119	*
	120	* This 'write, then read' approach leaves the bits for
	121	* other uses of the hardware info.
	122	*/
	123	pci_read_config_byte(pdev, 0x88, &byte);
	124	pci_write_config_byte(pdev, 0x88, byte \| win_size_bits );
	125
	126
	127	/* Assume the rom window is properly setup, and find it's size */
	128	pci_read_config_byte(pdev, 0x88, &byte);
	129
	130	if ((byte & ((1<<7)\|(1<<6))) == ((1<<7)\|(1<<6)))
	131	window->phys = 0xffb00000; /* 5MiB */
	132	else if ((byte & (1<<7)) == (1<<7))
	133	window->phys = 0xffc00000; /* 4MiB */
	134	else
	135	window->phys = 0xffff0000; /* 64KiB */
	136
	137	window->size = 0xffffffffUL - window->phys + 1UL;
	138
	139	/*
	140	* Try to reserve the window mem region. If this fails then
	141	* it is likely due to a fragment of the window being
	142	* "reserved" by the BIOS. In the case that the
	143	* request_mem_region() fails then once the rom size is
	144	* discovered we will try to reserve the unreserved fragment.
	145	*/
	146	window->rsrc.name = MOD_NAME;
	147	window->rsrc.start = window->phys;
	148	window->rsrc.end = window->phys + window->size - 1;
	149	window->rsrc.flags = IORESOURCE_MEM \| IORESOURCE_BUSY;
	150	if (request_resource(&iomem_resource, &window->rsrc)) {
	151	window->rsrc.parent = NULL;
	152	printk(KERN_ERR MOD_NAME
	153	" %s(): Unable to register resource"
	154	" 0x%.016llx-0x%.016llx - kernel bug?\n",
	155	__func__,
	156	(unsigned long long)window->rsrc.start,
	157	(unsigned long long)window->rsrc.end);
	158	}
	159
	160
	161	/* Enable writes through the rom window */
	162	pci_read_config_byte(pdev, 0x6d, &byte);
	163	pci_write_config_byte(pdev, 0x6d, byte \| 1);
	164
	165	/* FIXME handle registers 0x80 - 0x8C the bios region locks */
	166
	167	/* For write accesses caches are useless */
	168	window->virt = ioremap_nocache(window->phys, window->size);
	169	if (!window->virt) {
	170	printk(KERN_ERR MOD_NAME ": ioremap(%08lx, %08lx) failed\n",
	171	window->phys, window->size);
	172	goto out;
	173	}
	174
	175	/* Get the first address to look for a rom chip at */
	176	map_top = window->phys;
	177	#if 1
	178	/* The probe sequence run over the firmware hub lock
	179	* registers sets them to 0x7 (no access).
	180	* Probe at most the last 4MiB of the address space.
	181	*/
	182	if (map_top < 0xffc00000)
	183	map_top = 0xffc00000;
	184	#endif
	185	/* Loop through and look for rom chips. Since we don't know the
	186	* starting address for each chip, probe every ROM_PROBE_STEP_SIZE
	187	* bytes from the starting address of the window.
	188	*/
	189	while((map_top - 1) < 0xffffffffUL) {
	190	struct cfi_private *cfi;
	191	unsigned long offset;
	192	int i;
	193
	194	if (!map)
	195	map = kmalloc(sizeof(*map), GFP_KERNEL);
	196
	197	if (!map) {
	198	printk(KERN_ERR MOD_NAME ": kmalloc failed");
	199	goto out;
	200	}
	201	memset(map, 0, sizeof(*map));
	202	INIT_LIST_HEAD(&map->list);
	203	map->map.name = map->map_name;
	204	map->map.phys = map_top;
	205	offset = map_top - window->phys;
	206	map->map.virt = (void __iomem *)
	207	(((unsigned long)(window->virt)) + offset);
	208	map->map.size = 0xffffffffUL - map_top + 1UL;
	209	/* Set the name of the map to the address I am trying */
	210	sprintf(map->map_name, "%s @%08lx",
	211	MOD_NAME, map->map.phys);
	212
	213	/* There is no generic VPP support */
	214	for(map->map.bankwidth = 32; map->map.bankwidth;
	215	map->map.bankwidth >>= 1)
	216	{
	217	char **probe_type;
	218	/* Skip bankwidths that are not supported */
	219	if (!map_bankwidth_supported(map->map.bankwidth))
	220	continue;
	221
	222	/* Setup the map methods */
	223	simple_map_init(&map->map);
	224
	225	/* Try all of the probe methods */
	226	probe_type = rom_probe_types;
	227	for(; *probe_type; probe_type++) {
	228	map->mtd = do_map_probe(*probe_type, &map->map);
	229	if (map->mtd)
	230	goto found;
	231	}
	232	}
	233	map_top += ROM_PROBE_STEP_SIZE;
	234	continue;
	235	found:
	236	/* Trim the size if we are larger than the map */
	237	if (map->mtd->size > map->map.size) {
	238	printk(KERN_WARNING MOD_NAME
	239	" rom(%u) larger than window(%lu). fixing...\n",
	240	map->mtd->size, map->map.size);
	241	map->mtd->size = map->map.size;
	242	}
	243	if (window->rsrc.parent) {
	244	/*
	245	* Registering the MTD device in iomem may not be possible
	246	* if there is a BIOS "reserved" and BUSY range. If this
	247	* fails then continue anyway.
	248	*/
	249	map->rsrc.name = map->map_name;
	250	map->rsrc.start = map->map.phys;
	251	map->rsrc.end = map->map.phys + map->mtd->size - 1;
	252	map->rsrc.flags = IORESOURCE_MEM \| IORESOURCE_BUSY;
	253	if (request_resource(&window->rsrc, &map->rsrc)) {
	254	printk(KERN_ERR MOD_NAME
	255	": cannot reserve MTD resource\n");
	256	map->rsrc.parent = NULL;
	257	}
	258	}
	259
	260	/* Make the whole region visible in the map */
	261	map->map.virt = window->virt;
	262	map->map.phys = window->phys;
	263	cfi = map->map.fldrv_priv;
	264	for(i = 0; i < cfi->numchips; i++)
	265	cfi->chips[i].start += offset;
	266
	267	/* Now that the mtd devices is complete claim and export it */
	268	map->mtd->owner = THIS_MODULE;
	269	if (add_mtd_device(map->mtd)) {
	270	map_destroy(map->mtd);
	271	map->mtd = NULL;
	272	goto out;
	273	}
	274
	275
	276	/* Calculate the new value of map_top */
	277	map_top += map->mtd->size;
	278
	279	/* File away the map structure */
	280	list_add(&map->list, &window->maps);
	281	map = NULL;
	282	}
	283
	284	out:
	285	/* Free any left over map structures */
	286	if (map)
	287	kfree(map);
	288
	289	/* See if I have any map structures */
	290	if (list_empty(&window->maps)) {
	291	ck804xrom_cleanup(window);
	292	return -ENODEV;
	293	}
	294	return 0;
	295	}
	296
	297
	298	static void __devexit ck804xrom_remove_one (struct pci_dev *pdev)
	299	{
	300	struct ck804xrom_window *window = &ck804xrom_window;
	301
	302	ck804xrom_cleanup(window);
	303	}
	304
	305	static struct pci_device_id ck804xrom_pci_tbl[] = {
	306	{ PCI_VENDOR_ID_NVIDIA, 0x0051,
	307	PCI_ANY_ID, PCI_ANY_ID, }, /* nvidia ck804 */
	308	{ 0, }
	309	};
	310
	311	MODULE_DEVICE_TABLE(pci, ck804xrom_pci_tbl);
	312
	313	#if 0
	314	static struct pci_driver ck804xrom_driver = {
	315	.name = MOD_NAME,
	316	.id_table = ck804xrom_pci_tbl,
	317	.probe = ck804xrom_init_one,
	318	.remove = ck804xrom_remove_one,
	319	};
	320	#endif
	321
	322	static int __init init_ck804xrom(void)
	323	{
	324	struct pci_dev *pdev;
	325	struct pci_device_id *id;
	326	int retVal;
	327	pdev = NULL;
	328
	329	for(id = ck804xrom_pci_tbl; id->vendor; id++) {
	330	pdev = pci_find_device(id->vendor, id->device, NULL);
	331	if (pdev)
	332	break;
	333	}
	334	if (pdev) {
	335	retVal = ck804xrom_init_one(pdev, &ck804xrom_pci_tbl[0]);
	336	pci_dev_put(pdev);
	337	return retVal;
	338	}
	339	return -ENXIO;
	340	#if 0
	341	return pci_module_init(&ck804xrom_driver);
	342	#endif
	343	}
	344
	345	static void __exit cleanup_ck804xrom(void)
	346	{
	347	ck804xrom_remove_one(ck804xrom_window.pdev);
	348	}
	349
	350	module_init(init_ck804xrom);
	351	module_exit(cleanup_ck804xrom);
	352
	353	MODULE_LICENSE("GPL");
	354	MODULE_AUTHOR("Eric Biederman <ebiederman@lnxi.com>, Dave Olsen <dolsen@lnxi.com>");
	355	MODULE_DESCRIPTION("MTD map driver for BIOS chips on the Nvidia ck804 southbridge");
	356