diff options
Diffstat (limited to 'linux-2.4.x/drivers/mtd/maps/autcpu12-nvram.c')
| -rw-r--r-- | linux-2.4.x/drivers/mtd/maps/autcpu12-nvram.c | 108 |
1 files changed, 28 insertions, 80 deletions
diff --git a/linux-2.4.x/drivers/mtd/maps/autcpu12-nvram.c b/linux-2.4.x/drivers/mtd/maps/autcpu12-nvram.c index db78b01..7ed3424 100644 --- a/linux-2.4.x/drivers/mtd/maps/autcpu12-nvram.c +++ b/linux-2.4.x/drivers/mtd/maps/autcpu12-nvram.c @@ -1,8 +1,8 @@ /* - * NV-RAM memory access on autcpu12 + * NV-RAM memory access on autcpu12 * (C) 2002 Thomas Gleixner (gleixner@autronix.de) * - * $Id: autcpu12-nvram.c,v 1.1 2002/02/22 09:30:24 gleixner Exp $ + * $Id: autcpu12-nvram.c,v 1.9 2005/11/07 11:14:26 gleixner Exp $ * * 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 @@ -24,6 +24,7 @@ #include <linux/types.h> #include <linux/kernel.h> #include <linux/ioport.h> +#include <linux/init.h> #include <asm/io.h> #include <asm/sizes.h> #include <asm/hardware.h> @@ -32,103 +33,50 @@ #include <linux/mtd/map.h> #include <linux/mtd/partitions.h> -__u8 autcpu12_read8(struct map_info *map, unsigned long ofs) -{ - return __raw_readb(map->map_priv_1 + ofs); -} - -__u16 autcpu12_read16(struct map_info *map, unsigned long ofs) -{ - return __raw_readw(map->map_priv_1 + ofs); -} - -__u32 autcpu12_read32(struct map_info *map, unsigned long ofs) -{ - return __raw_readl(map->map_priv_1 + ofs); -} - -void autcpu12_write8(struct map_info *map, __u8 d, unsigned long adr) -{ - __raw_writeb(d, map->map_priv_1 + adr); - mb(); -} - -void autcpu12_write16(struct map_info *map, __u16 d, unsigned long adr) -{ - __raw_writew(d, map->map_priv_1 + adr); - mb(); -} - -void autcpu12_write32(struct map_info *map, __u32 d, unsigned long adr) -{ - __raw_writel(d, map->map_priv_1 + adr); - mb(); -} - -void autcpu12_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len) -{ - memcpy_fromio(to, map->map_priv_1 + from, len); -} - -void autcpu12_copy_to(struct map_info *map, unsigned long to, const void *from, ssize_t len) -{ - while(len) { - __raw_writeb(*(unsigned char *) from, map->map_priv_1 + to); - from++; - to++; - len--; - } -} static struct mtd_info *sram_mtd; struct map_info autcpu12_sram_map = { - name: "SRAM", - size: 32768, - buswidth: 8, - read8: autcpu12_read8, - read16: autcpu12_read16, - read32: autcpu12_read32, - copy_from: autcpu12_copy_from, - write8: autcpu12_write8, - write16: autcpu12_write16, - write32: autcpu12_write32, - copy_to: autcpu12_copy_to + .name = "SRAM", + .size = 32768, + .bankwidth = 4, + .phys = 0x12000000, }; static int __init init_autcpu12_sram (void) { int err, save0, save1; - autcpu12_sram_map.map_priv_1 = (unsigned long)ioremap(0x12000000, SZ_128K); - if (!autcpu12_sram_map.map_priv_1) { + autcpu12_sram_map.virt = ioremap(0x12000000, SZ_128K); + if (!autcpu12_sram_map.virt) { printk("Failed to ioremap autcpu12 NV-RAM space\n"); err = -EIO; goto out; } - - /* - * Check for 32K/128K - * read ofs 0 - * read ofs 0x10000 + simple_map_init(&autcpu_sram_map); + + /* + * Check for 32K/128K + * read ofs 0 + * read ofs 0x10000 * Write complement to ofs 0x100000 * Read and check result on ofs 0x0 * Restore contents */ - save0 = autcpu12_read32(&autcpu12_sram_map,0); - save1 = autcpu12_read32(&autcpu12_sram_map,0x10000); - autcpu12_write32(&autcpu12_sram_map,~save0,0x10000); - /* if we find this pattern on 0x0, we have 32K size + save0 = map_read32(&autcpu12_sram_map,0); + save1 = map_read32(&autcpu12_sram_map,0x10000); + map_write32(&autcpu12_sram_map,~save0,0x10000); + /* if we find this pattern on 0x0, we have 32K size * restore contents and exit */ - if ( autcpu12_read32(&autcpu12_sram_map,0) != save0) { - autcpu12_write32(&autcpu12_sram_map,save0,0x0); + if ( map_read32(&autcpu12_sram_map,0) != save0) { + map_write32(&autcpu12_sram_map,save0,0x0); goto map; } /* We have a 128K found, restore 0x10000 and set size * to 128K */ - autcpu12_write32(&autcpu12_sram_map,save1,0x10000); + map_write32(&autcpu12_sram_map,save1,0x10000); autcpu12_sram_map.size = SZ_128K; map: @@ -139,17 +87,17 @@ map: goto out_ioremap; } - sram_mtd->module = THIS_MODULE; + sram_mtd->owner = THIS_MODULE; sram_mtd->erasesize = 16; - + if (add_mtd_device(sram_mtd)) { printk("NV-RAM device addition failed\n"); err = -ENOMEM; goto out_probe; } - printk("NV-RAM device size %ldK registered on AUTCPU12\n",autcpu12_sram_map.size/SZ_1K); - + printk("NV-RAM device size %ldKiB registered on AUTCPU12\n",autcpu12_sram_map.size/SZ_1K); + return 0; out_probe: @@ -157,7 +105,7 @@ out_probe: sram_mtd = 0; out_ioremap: - iounmap((void *)autcpu12_sram_map.map_priv_1); + iounmap((void *)autcpu12_sram_map.virt); out: return err; } @@ -167,7 +115,7 @@ static void __exit cleanup_autcpu12_maps(void) if (sram_mtd) { del_mtd_device(sram_mtd); map_destroy(sram_mtd); - iounmap((void *)autcpu12_sram_map.map_priv_1); + iounmap((void *)autcpu12_sram_map.virt); } } |