X-Git-Url: http://git.rohieb.name/openwrt.git/blobdiff_plain/a69c163d3209fcb43c480b8a4bbaa4bf60076ba7..adde7768a2eab2950a7628319ec832c63a00ff03:/target/linux/ifxmips/files/drivers/mtd/maps/ifxmips.c?ds=inline diff --git a/target/linux/ifxmips/files/drivers/mtd/maps/ifxmips.c b/target/linux/ifxmips/files/drivers/mtd/maps/ifxmips.c index 3dd41d1ce..98359eb9f 100644 --- a/target/linux/ifxmips/files/drivers/mtd/maps/ifxmips.c +++ b/target/linux/ifxmips/files/drivers/mtd/maps/ifxmips.c @@ -1,6 +1,4 @@ /* - * Driver for IFXMIPS flashmap - * * 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 @@ -16,7 +14,7 @@ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * Copyright (C) 2004 Liu Peng Infineon IFAP DC COM CPE - * Copyright (C) 2007 John Crispin + * Copyright (C) 2008 John Crispin */ #include @@ -29,61 +27,66 @@ #include #include #include +#include #include #include -#define DRVNAME "ifxmips_mtd" - static struct map_info ifxmips_map = { - .name = DRVNAME, + .name = "ifxmips_mtd", .bankwidth = 2, .size = 0x400000, }; static map_word -ifxmips_read16 (struct map_info * map, unsigned long adr) +ifxmips_read16(struct map_info * map, unsigned long adr) { + unsigned long flags; map_word temp; - + spin_lock_irqsave(&ebu_lock, flags); adr ^= 2; - temp.x[0] = *((__u16 *) (map->virt + adr)); - + temp.x[0] = *((__u16*)(map->virt + adr)); + spin_unlock_irqrestore(&ebu_lock, flags); return temp; } static void -ifxmips_write16 (struct map_info *map, map_word d, unsigned long adr) +ifxmips_write16(struct map_info *map, map_word d, unsigned long adr) { + unsigned long flags; + spin_lock_irqsave(&ebu_lock, flags); adr ^= 2; - *((__u16 *) (map->virt + adr)) = d.x[0]; + *((__u16*)(map->virt + adr)) = d.x[0]; + spin_unlock_irqrestore(&ebu_lock, flags); } void -ifxmips_copy_from (struct map_info *map, void *to, unsigned long from, ssize_t len) +ifxmips_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len) { - u8 *p; - u8 *to_8; - - from = (unsigned long) (from + map->virt); - p = (u8 *) from; - to_8 = (u8 *) to; - while(len--){ + unsigned char *p; + unsigned char *to_8; + unsigned long flags; + spin_lock_irqsave(&ebu_lock, flags); + from = (unsigned long)(from + map->virt); + p = (unsigned char*) from; + to_8 = (unsigned char*) to; + while(len--) *to_8++ = *p++; - } + spin_unlock_irqrestore(&ebu_lock, flags); } void -ifxmips_copy_to (struct map_info *map, unsigned long to, const void *from, ssize_t len) +ifxmips_copy_to(struct map_info *map, unsigned long to, const void *from, ssize_t len) { - u8 *p = (u8*) from; - u8 *to_8; - + unsigned char *p = (unsigned char*)from; + unsigned char *to_8; + unsigned long flags; + spin_lock_irqsave(&ebu_lock, flags); to += (unsigned long) map->virt; - to_8 = (u8*)to; - while(len--){ + to_8 = (unsigned char*)to; + while(len--) *p++ = *to_8++; - } + spin_unlock_irqrestore(&ebu_lock, flags); } static struct mtd_partition @@ -111,58 +114,57 @@ ifxmips_partitions[4] = { }; int -find_uImage_size (unsigned long start_offset){ +find_uImage_size(unsigned long start_offset){ unsigned long temp; - ifxmips_copy_from(&ifxmips_map, &temp, start_offset + 12, 4); - printk(KERN_INFO DRVNAME ": kernel size is %ld \n", temp + 0x40); + printk(KERN_INFO "ifxmips_mtd: kernel size is %ld \n", temp + 0x40); return temp + 0x40; } int -detect_squashfs_partition (unsigned long start_offset){ +detect_squashfs_partition(unsigned long start_offset){ unsigned long temp; - ifxmips_copy_from(&ifxmips_map, &temp, start_offset, 4); - return (temp == SQUASHFS_MAGIC); } static int -ifxmips_mtd_probe (void) +ifxmips_mtd_probe(struct platform_device *dev) { struct mtd_info *ifxmips_mtd = NULL; struct mtd_partition *parts = NULL; unsigned long uimage_size; - writel(0x1d7ff, IFXMIPS_EBU_BUSCON0); + ifxmips_w32(0x1d7ff, IFXMIPS_EBU_BUSCON0); ifxmips_map.read = ifxmips_read16; ifxmips_map.write = ifxmips_write16; ifxmips_map.copy_from = ifxmips_copy_from; ifxmips_map.copy_to = ifxmips_copy_to; + ifxmips_map.phys = dev->resource->start; + ifxmips_map.size = dev->resource->end - ifxmips_map.phys + 1; + ifxmips_map.virt = ioremap_nocache(ifxmips_map.phys, ifxmips_map.size); - ifxmips_map.phys = IFXMIPS_FLASH_START; - ifxmips_map.virt = ioremap_nocache(IFXMIPS_FLASH_START, IFXMIPS_FLASH_MAX); - ifxmips_map.size = IFXMIPS_FLASH_MAX; - if (!ifxmips_map.virt) { - printk(KERN_WARNING DRVNAME ": failed to ioremap!\n"); + if(!ifxmips_map.virt) + { + printk(KERN_WARNING "ifxmips_mtd: failed to ioremap!\n"); return -EIO; } ifxmips_mtd = (struct mtd_info *) do_map_probe("cfi_probe", &ifxmips_map); - if (!ifxmips_mtd) { + if(!ifxmips_mtd) + { iounmap(ifxmips_map.virt); - printk(KERN_WARNING DRVNAME ": probing failed\n"); + printk(KERN_WARNING "ifxmips_mtd: probing failed\n"); return -ENXIO; } ifxmips_mtd->owner = THIS_MODULE; - uimage_size = find_uImage_size(ifxmips_partitions[2].offset); - if(detect_squashfs_partition(ifxmips_partitions[2].offset + uimage_size)){ - printk(KERN_INFO DRVNAME ": found a squashfs following the uImage\n"); + if(detect_squashfs_partition(ifxmips_partitions[2].offset + uimage_size)) + { + printk(KERN_INFO "ifxmips_mtd: found a squashfs following the uImage\n"); } else { uimage_size &= ~0xffff; uimage_size += 0x10000; @@ -175,39 +177,37 @@ ifxmips_mtd_probe (void) parts = &ifxmips_partitions[0]; add_mtd_partitions(ifxmips_mtd, parts, 4); - printk(KERN_INFO DRVNAME ": added ifxmips flash with %dMB\n", ifxmips_mtd->size >> 20); + printk(KERN_INFO "ifxmips_mtd: added ifxmips flash with %dMB\n", ifxmips_mtd->size >> 20); return 0; } -static struct -platform_driver ifxmips_mtd_driver = { - .probe = ifxmips_mtd_probe, - .driver = { - .name = DRVNAME, - .owner = THIS_MODULE, - }, -}; +static struct +platform_driver ifxmips_mtd_driver = { + .probe = ifxmips_mtd_probe, + .driver = { + .name = "ifxmips_mtd", + .owner = THIS_MODULE, + }, +}; int __init -init_ifxmips_mtd (void) +init_ifxmips_mtd(void) { - int ret = platform_driver_register(&ifxmips_mtd_driver); - if (ret) - printk(KERN_INFO DRVNAME ": error registering platfom driver!"); - - return ret; + int ret = platform_driver_register(&ifxmips_mtd_driver); + if(ret) + printk(KERN_INFO "ifxmips_mtd: error registering platfom driver!"); + return ret; } -static void -__exit -cleanup_ifxmips_mtd (void) +static void __exit +cleanup_ifxmips_mtd(void) { platform_driver_unregister(&ifxmips_mtd_driver); } -module_init (init_ifxmips_mtd); -module_exit (cleanup_ifxmips_mtd); +module_init(init_ifxmips_mtd); +module_exit(cleanup_ifxmips_mtd); -MODULE_LICENSE ("GPL"); -MODULE_AUTHOR ("John Crispin "); -MODULE_DESCRIPTION ("MTD map driver for IFXMIPS boards"); +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("John Crispin "); +MODULE_DESCRIPTION("MTD map driver for IFXMIPS boards");