mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2026-08-09 06:14:34 +02:00
Rosen PenevandMiquel Raynal
87eee18f29
Use a flexible array member and kzalloc_flex() to do so. Simplifies memory allocation slightly. Signed-off-by: Rosen Penev <rosenp@gmail.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
88 lines
2.2 KiB
C
88 lines
2.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* Copyright © 2009 - Maxim Levitsky
|
|
* SmartMedia/xD translation layer
|
|
*
|
|
* Based loosly on ssfdc.c which is
|
|
* © 2005 Eptar srl
|
|
* Author: Claudio Lanconelli <lanconelli.claudio@eptar.com>
|
|
*/
|
|
|
|
#include <linux/mtd/blktrans.h>
|
|
#include <linux/kfifo.h>
|
|
#include <linux/sched.h>
|
|
#include <linux/completion.h>
|
|
#include <linux/mtd/mtd.h>
|
|
|
|
|
|
|
|
struct ftl_zone {
|
|
bool initialized;
|
|
int16_t *lba_to_phys_table; /* LBA to physical table */
|
|
struct kfifo free_sectors; /* queue of free sectors */
|
|
};
|
|
|
|
struct sm_ftl {
|
|
struct mtd_blktrans_dev *trans;
|
|
|
|
struct mutex mutex; /* protects the structure */
|
|
struct ftl_zone *zones; /* FTL tables for each zone */
|
|
|
|
/* Media information */
|
|
int block_size; /* block size in bytes */
|
|
int zone_size; /* zone size in blocks */
|
|
int zone_count; /* number of zones */
|
|
int max_lba; /* maximum lba in a zone */
|
|
int smallpagenand; /* 256 bytes/page nand */
|
|
bool readonly; /* is FS readonly */
|
|
bool unstable;
|
|
int cis_block; /* CIS block location */
|
|
int cis_boffset; /* CIS offset in the block */
|
|
int cis_page_offset; /* CIS offset in the page */
|
|
|
|
/* Cache */
|
|
int cache_block; /* block number of cached block */
|
|
int cache_zone; /* zone of cached block */
|
|
unsigned char *cache_data; /* cached block data */
|
|
long unsigned int cache_data_invalid_bitmap;
|
|
bool cache_clean;
|
|
struct work_struct flush_work;
|
|
struct timer_list timer;
|
|
|
|
/* Geometry stuff */
|
|
int heads;
|
|
int sectors;
|
|
int cylinders;
|
|
|
|
struct attribute_group *disk_attributes;
|
|
u8 cis_buffer[]; /* tmp buffer for cis reads */
|
|
};
|
|
|
|
struct chs_entry {
|
|
unsigned long size;
|
|
unsigned short cyl;
|
|
unsigned char head;
|
|
unsigned char sec;
|
|
};
|
|
|
|
|
|
#define SM_FTL_PARTN_BITS 3
|
|
|
|
#define sm_printk(format, ...) \
|
|
printk(KERN_WARNING "sm_ftl" ": " format "\n", ## __VA_ARGS__)
|
|
|
|
#define dbg(format, ...) \
|
|
if (debug) \
|
|
printk(KERN_DEBUG "sm_ftl" ": " format "\n", ## __VA_ARGS__)
|
|
|
|
#define dbg_verbose(format, ...) \
|
|
if (debug > 1) \
|
|
printk(KERN_DEBUG "sm_ftl" ": " format "\n", ## __VA_ARGS__)
|
|
|
|
|
|
static int sm_erase_block(struct sm_ftl *ftl, int zone_num, uint16_t block,
|
|
int put_free);
|
|
static void sm_mark_block_bad(struct sm_ftl *ftl, int zone_num, int block);
|
|
|
|
static int sm_recheck_media(struct sm_ftl *ftl);
|