Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / mtd / sm_ftl.h

diff --git a/kernel/drivers/mtd/sm_ftl.h b/kernel/drivers/mtd/sm_ftl.h
new file mode 100644 (file)
index 0000000..43bb730
--- /dev/null
+++ b/kernel/drivers/mtd/sm_ftl.h
@@ -0,0 +1,94 @@
+/*
+ * 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>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#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 */
+       void *cis_buffer;               /* tmp buffer for cis reads */
+
+       /* 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;
+
+       /* Async erase stuff */
+       struct completion erase_completion;
+
+       /* Geometry stuff */
+       int heads;
+       int sectors;
+       int cylinders;
+
+       struct attribute_group *disk_attributes;
+};
+
+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 void sm_erase_callback(struct erase_info *self);
+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);