forked from luck/tmp_suning_uos_patched
59018b6d2a
Once upon a time, the MTD repository was using CVS. This patch therefore removes all usages of the no longer updated CVS keywords from the MTD code. This also includes code that printed them to the user. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
165 lines
3.5 KiB
C
165 lines
3.5 KiB
C
/*
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* mtdram - a test mtd device
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* Author: Alexander Larsson <alex@cendio.se>
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*
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* Copyright (c) 1999 Alexander Larsson <alex@cendio.se>
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* Copyright (c) 2005 Joern Engel <joern@wh.fh-wedel.de>
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*
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* This code is GPL
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*
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*/
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/ioport.h>
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#include <linux/vmalloc.h>
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#include <linux/init.h>
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#include <linux/mtd/compatmac.h>
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/mtdram.h>
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static unsigned long total_size = CONFIG_MTDRAM_TOTAL_SIZE;
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static unsigned long erase_size = CONFIG_MTDRAM_ERASE_SIZE;
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#define MTDRAM_TOTAL_SIZE (total_size * 1024)
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#define MTDRAM_ERASE_SIZE (erase_size * 1024)
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#ifdef MODULE
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module_param(total_size, ulong, 0);
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MODULE_PARM_DESC(total_size, "Total device size in KiB");
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module_param(erase_size, ulong, 0);
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MODULE_PARM_DESC(erase_size, "Device erase block size in KiB");
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#endif
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// We could store these in the mtd structure, but we only support 1 device..
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static struct mtd_info *mtd_info;
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static int ram_erase(struct mtd_info *mtd, struct erase_info *instr)
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{
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if (instr->addr + instr->len > mtd->size)
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return -EINVAL;
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memset((char *)mtd->priv + instr->addr, 0xff, instr->len);
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instr->state = MTD_ERASE_DONE;
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mtd_erase_callback(instr);
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return 0;
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}
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static int ram_point(struct mtd_info *mtd, loff_t from, size_t len,
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size_t *retlen, void **virt, resource_size_t *phys)
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{
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if (from + len > mtd->size)
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return -EINVAL;
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/* can we return a physical address with this driver? */
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if (phys)
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return -EINVAL;
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*virt = mtd->priv + from;
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*retlen = len;
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return 0;
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}
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static void ram_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
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{
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}
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static int ram_read(struct mtd_info *mtd, loff_t from, size_t len,
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size_t *retlen, u_char *buf)
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{
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if (from + len > mtd->size)
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return -EINVAL;
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memcpy(buf, mtd->priv + from, len);
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*retlen = len;
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return 0;
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}
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static int ram_write(struct mtd_info *mtd, loff_t to, size_t len,
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size_t *retlen, const u_char *buf)
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{
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if (to + len > mtd->size)
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return -EINVAL;
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memcpy((char *)mtd->priv + to, buf, len);
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*retlen = len;
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return 0;
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}
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static void __exit cleanup_mtdram(void)
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{
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if (mtd_info) {
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del_mtd_device(mtd_info);
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vfree(mtd_info->priv);
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kfree(mtd_info);
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}
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}
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int mtdram_init_device(struct mtd_info *mtd, void *mapped_address,
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unsigned long size, char *name)
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{
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memset(mtd, 0, sizeof(*mtd));
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/* Setup the MTD structure */
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mtd->name = name;
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mtd->type = MTD_RAM;
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mtd->flags = MTD_CAP_RAM;
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mtd->size = size;
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mtd->writesize = 1;
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mtd->erasesize = MTDRAM_ERASE_SIZE;
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mtd->priv = mapped_address;
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mtd->owner = THIS_MODULE;
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mtd->erase = ram_erase;
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mtd->point = ram_point;
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mtd->unpoint = ram_unpoint;
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mtd->read = ram_read;
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mtd->write = ram_write;
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if (add_mtd_device(mtd)) {
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return -EIO;
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}
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return 0;
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}
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static int __init init_mtdram(void)
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{
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void *addr;
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int err;
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if (!total_size)
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return -EINVAL;
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/* Allocate some memory */
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mtd_info = kmalloc(sizeof(struct mtd_info), GFP_KERNEL);
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if (!mtd_info)
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return -ENOMEM;
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addr = vmalloc(MTDRAM_TOTAL_SIZE);
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if (!addr) {
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kfree(mtd_info);
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mtd_info = NULL;
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return -ENOMEM;
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}
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err = mtdram_init_device(mtd_info, addr, MTDRAM_TOTAL_SIZE, "mtdram test device");
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if (err) {
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vfree(addr);
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kfree(mtd_info);
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mtd_info = NULL;
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return err;
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}
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memset(mtd_info->priv, 0xff, MTDRAM_TOTAL_SIZE);
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return err;
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}
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module_init(init_mtdram);
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module_exit(cleanup_mtdram);
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("Alexander Larsson <alexl@redhat.com>");
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MODULE_DESCRIPTION("Simulated MTD driver for testing");
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