#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/slab.h>
-#include <linux/device.h>
-#include <linux/platform_device.h>
+#include <asm/io.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/map.h>
+#include <linux/config.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/physmap.h>
-#include <asm/io.h>
-
-struct physmap_flash_info {
- struct mtd_info *mtd;
- struct map_info map;
- struct resource *res;
-#ifdef CONFIG_MTD_PARTITIONS
- int nr_parts;
- struct mtd_partition *parts;
-#endif
-};
+static struct mtd_info *mymtd;
-static int physmap_flash_remove(struct platform_device *dev)
-{
- struct physmap_flash_info *info;
- struct physmap_flash_data *physmap_data;
-
- info = platform_get_drvdata(dev);
- if (info == NULL)
- return 0;
- platform_set_drvdata(dev, NULL);
-
- physmap_data = dev->dev.platform_data;
+struct map_info physmap_map = {
+ .name = "phys_mapped_flash",
+ .phys = CONFIG_MTD_PHYSMAP_START,
+ .size = CONFIG_MTD_PHYSMAP_LEN,
+ .bankwidth = CONFIG_MTD_PHYSMAP_BANKWIDTH,
+};
- if (info->mtd != NULL) {
#ifdef CONFIG_MTD_PARTITIONS
- if (info->nr_parts) {
- del_mtd_partitions(info->mtd);
- kfree(info->parts);
- } else if (physmap_data->nr_parts) {
- del_mtd_partitions(info->mtd);
- } else {
- del_mtd_device(info->mtd);
- }
-#else
- del_mtd_device(info->mtd);
-#endif
- map_destroy(info->mtd);
- }
+static struct mtd_partition *mtd_parts;
+static int mtd_parts_nb;
- if (info->map.virt != NULL)
- iounmap((void *)info->map.virt);
+static int num_physmap_partitions;
+static struct mtd_partition *physmap_partitions;
- if (info->res != NULL) {
- release_resource(info->res);
- kfree(info->res);
- }
+static const char *part_probes[] __initdata = {"cmdlinepart", "RedBoot", NULL};
- return 0;
+void physmap_set_partitions(struct mtd_partition *parts, int num_parts)
+{
+ physmap_partitions=parts;
+ num_physmap_partitions=num_parts;
}
+#endif /* CONFIG_MTD_PARTITIONS */
-static const char *rom_probe_types[] = { "cfi_probe", "jedec_probe", "map_rom", NULL };
-#ifdef CONFIG_MTD_PARTITIONS
-static const char *part_probe_types[] = { "cmdlinepart", "RedBoot", NULL };
-#endif
-
-static int physmap_flash_probe(struct platform_device *dev)
+static int __init init_physmap(void)
{
- struct physmap_flash_data *physmap_data;
- struct physmap_flash_info *info;
- const char **probe_type;
- int err;
-
- physmap_data = dev->dev.platform_data;
- if (physmap_data == NULL)
- return -ENODEV;
-
- printk(KERN_NOTICE "physmap platform flash device: %.8llx at %.8llx\n",
- (unsigned long long)dev->resource->end - dev->resource->start + 1,
- (unsigned long long)dev->resource->start);
-
- info = kmalloc(sizeof(struct physmap_flash_info), GFP_KERNEL);
- if (info == NULL) {
- err = -ENOMEM;
- goto err_out;
- }
- memset(info, 0, sizeof(*info));
+ static const char *rom_probe_types[] = { "cfi_probe", "jedec_probe", "map_rom", NULL };
+ const char **type;
- platform_set_drvdata(dev, info);
+ printk(KERN_NOTICE "physmap flash device: %lx at %lx\n", physmap_map.size, physmap_map.phys);
+ physmap_map.virt = ioremap(physmap_map.phys, physmap_map.size);
- info->res = request_mem_region(dev->resource->start,
- dev->resource->end - dev->resource->start + 1,
- dev->dev.bus_id);
- if (info->res == NULL) {
- dev_err(&dev->dev, "Could not reserve memory region\n");
- err = -ENOMEM;
- goto err_out;
+ if (!physmap_map.virt) {
+ printk("Failed to ioremap\n");
+ return -EIO;
}
- info->map.name = dev->dev.bus_id;
- info->map.phys = dev->resource->start;
- info->map.size = dev->resource->end - dev->resource->start + 1;
- info->map.bankwidth = physmap_data->width;
- info->map.set_vpp = physmap_data->set_vpp;
-
- info->map.virt = ioremap(info->map.phys, info->map.size);
- if (info->map.virt == NULL) {
- dev_err(&dev->dev, "Failed to ioremap flash region\n");
- err = EIO;
- goto err_out;
- }
+ simple_map_init(&physmap_map);
- simple_map_init(&info->map);
-
- probe_type = rom_probe_types;
- for (; info->mtd == NULL && *probe_type != NULL; probe_type++)
- info->mtd = do_map_probe(*probe_type, &info->map);
- if (info->mtd == NULL) {
- dev_err(&dev->dev, "map_probe failed\n");
- err = -ENXIO;
- goto err_out;
+ mymtd = NULL;
+ type = rom_probe_types;
+ for(; !mymtd && *type; type++) {
+ mymtd = do_map_probe(*type, &physmap_map);
}
- info->mtd->owner = THIS_MODULE;
+ if (mymtd) {
+ mymtd->owner = THIS_MODULE;
#ifdef CONFIG_MTD_PARTITIONS
- err = parse_mtd_partitions(info->mtd, part_probe_types, &info->parts, 0);
- if (err > 0) {
- add_mtd_partitions(info->mtd, info->parts, err);
- return 0;
- }
-
- if (physmap_data->nr_parts) {
- printk(KERN_NOTICE "Using physmap partition information\n");
- add_mtd_partitions(info->mtd, physmap_data->parts,
- physmap_data->nr_parts);
- return 0;
- }
-#endif
+ mtd_parts_nb = parse_mtd_partitions(mymtd, part_probes,
+ &mtd_parts, 0);
- add_mtd_device(info->mtd);
- return 0;
-
-err_out:
- physmap_flash_remove(dev);
- return err;
-}
-
-static struct platform_driver physmap_flash_driver = {
- .probe = physmap_flash_probe,
- .remove = physmap_flash_remove,
- .driver = {
- .name = "physmap-flash",
- },
-};
+ if (mtd_parts_nb > 0)
+ {
+ add_mtd_partitions (mymtd, mtd_parts, mtd_parts_nb);
+ return 0;
+ }
+ if (num_physmap_partitions != 0)
+ {
+ printk(KERN_NOTICE
+ "Using physmap partition definition\n");
+ add_mtd_partitions (mymtd, physmap_partitions, num_physmap_partitions);
+ return 0;
+ }
-#ifdef CONFIG_MTD_PHYSMAP_LEN
-#if CONFIG_MTD_PHYSMAP_LEN != 0
-#warning using PHYSMAP compat code
-#define PHYSMAP_COMPAT
-#endif
#endif
+ add_mtd_device(mymtd);
-#ifdef PHYSMAP_COMPAT
-static struct physmap_flash_data physmap_flash_data = {
- .width = CONFIG_MTD_PHYSMAP_BANKWIDTH,
-};
-
-static struct resource physmap_flash_resource = {
- .start = CONFIG_MTD_PHYSMAP_START,
- .end = CONFIG_MTD_PHYSMAP_START + CONFIG_MTD_PHYSMAP_LEN - 1,
- .flags = IORESOURCE_MEM,
-};
-
-static struct platform_device physmap_flash = {
- .name = "physmap-flash",
- .id = 0,
- .dev = {
- .platform_data = &physmap_flash_data,
- },
- .num_resources = 1,
- .resource = &physmap_flash_resource,
-};
-
-void physmap_configure(unsigned long addr, unsigned long size,
- int bankwidth, void (*set_vpp)(struct map_info *, int))
-{
- physmap_flash_resource.start = addr;
- physmap_flash_resource.end = addr + size - 1;
- physmap_flash_data.width = bankwidth;
- physmap_flash_data.set_vpp = set_vpp;
-}
+ return 0;
+ }
-#ifdef CONFIG_MTD_PARTITIONS
-void physmap_set_partitions(struct mtd_partition *parts, int num_parts)
-{
- physmap_flash_data.nr_parts = num_parts;
- physmap_flash_data.parts = parts;
+ iounmap(physmap_map.virt);
+ return -ENXIO;
}
-#endif
-#endif
-static int __init physmap_init(void)
+static void __exit cleanup_physmap(void)
{
- int err;
-
- err = platform_driver_register(&physmap_flash_driver);
-#ifdef PHYSMAP_COMPAT
- if (err == 0)
- platform_device_register(&physmap_flash);
+#ifdef CONFIG_MTD_PARTITIONS
+ if (mtd_parts_nb) {
+ del_mtd_partitions(mymtd);
+ kfree(mtd_parts);
+ } else if (num_physmap_partitions) {
+ del_mtd_partitions(mymtd);
+ } else {
+ del_mtd_device(mymtd);
+ }
+#else
+ del_mtd_device(mymtd);
#endif
+ map_destroy(mymtd);
- return err;
+ iounmap(physmap_map.virt);
+ physmap_map.virt = NULL;
}
-static void __exit physmap_exit(void)
-{
-#ifdef PHYSMAP_COMPAT
- platform_device_unregister(&physmap_flash);
-#endif
- platform_driver_unregister(&physmap_flash_driver);
-}
+module_init(init_physmap);
+module_exit(cleanup_physmap);
-module_init(physmap_init);
-module_exit(physmap_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>");
git://git.onelab.eu / linux-2.6.git / blobdiff