zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/os/linux/linux-3.4.x/drivers/mtd/ubi/debug.h b/ap/os/linux/linux-3.4.x/drivers/mtd/ubi/debug.h
new file mode 100644
index 0000000..ead2cd1
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/mtd/ubi/debug.h
@@ -0,0 +1,239 @@
+/*
+ * Copyright (c) International Business Machines Corp., 2006
+ *
+ * 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
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
+ * the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * Author: Artem Bityutskiy (Битюцкий Артём)
+ */
+
+#ifndef __UBI_DEBUG_H__
+#define __UBI_DEBUG_H__
+
+#ifdef CONFIG_MTD_UBI_DEBUG
+#include <linux/random.h>
+
+#define ubi_assert(expr) do { \
+ if (unlikely(!(expr))) { \
+ printk(KERN_CRIT "UBI assert failed in %s at %u (pid %d)\n", \
+ __func__, __LINE__, current->pid); \
+ ubi_dbg_dump_stack(); \
+ } \
+} while (0)
+
+#define dbg_err(fmt, ...) ubi_err(fmt, ##__VA_ARGS__)
+
+#define ubi_dbg_dump_stack() dump_stack()
+
+#define ubi_dbg_print_hex_dump(l, ps, pt, r, g, b, len, a) \
+ print_hex_dump(l, ps, pt, r, g, b, len, a)
+
+#define ubi_dbg_msg(type, fmt, ...) \
+ pr_debug("UBI DBG " type ": " fmt "\n", ##__VA_ARGS__)
+
+/* Just a debugging messages not related to any specific UBI subsystem */
+#define dbg_msg(fmt, ...) \
+ printk(KERN_DEBUG "UBI DBG (pid %d): %s: " fmt "\n", \
+ current->pid, __func__, ##__VA_ARGS__)
+
+/* General debugging messages */
+#define dbg_gen(fmt, ...) ubi_dbg_msg("gen", fmt, ##__VA_ARGS__)
+/* Messages from the eraseblock association sub-system */
+#define dbg_eba(fmt, ...) ubi_dbg_msg("eba", fmt, ##__VA_ARGS__)
+/* Messages from the wear-leveling sub-system */
+#define dbg_wl(fmt, ...) ubi_dbg_msg("wl", fmt, ##__VA_ARGS__)
+/* Messages from the input/output sub-system */
+#define dbg_io(fmt, ...) ubi_dbg_msg("io", fmt, ##__VA_ARGS__)
+/* Initialization and build messages */
+#define dbg_bld(fmt, ...) ubi_dbg_msg("bld", fmt, ##__VA_ARGS__)
+
+void ubi_dbg_dump_ec_hdr(const struct ubi_ec_hdr *ec_hdr);
+void ubi_dbg_dump_vid_hdr(const struct ubi_vid_hdr *vid_hdr);
+void ubi_dbg_dump_vol_info(const struct ubi_volume *vol);
+void ubi_dbg_dump_vtbl_record(const struct ubi_vtbl_record *r, int idx);
+void ubi_dbg_dump_sv(const struct ubi_scan_volume *sv);
+void ubi_dbg_dump_seb(const struct ubi_scan_leb *seb, int type);
+void ubi_dbg_dump_mkvol_req(const struct ubi_mkvol_req *req);
+void ubi_dbg_dump_flash(struct ubi_device *ubi, int pnum, int offset, int len);
+int ubi_dbg_check_all_ff(struct ubi_device *ubi, int pnum, int offset, int len);
+int ubi_dbg_check_write(struct ubi_device *ubi, const void *buf, int pnum,
+ int offset, int len);
+int ubi_debugging_init_dev(struct ubi_device *ubi);
+void ubi_debugging_exit_dev(struct ubi_device *ubi);
+int ubi_debugfs_init(void);
+void ubi_debugfs_exit(void);
+int ubi_debugfs_init_dev(struct ubi_device *ubi);
+void ubi_debugfs_exit_dev(struct ubi_device *ubi);
+
+/*
+ * The UBI debugfs directory name pattern and maximum name length (3 for "ubi"
+ * + 2 for the number plus 1 for the trailing zero byte.
+ */
+#define UBI_DFS_DIR_NAME "ubi%d"
+#define UBI_DFS_DIR_LEN (3 + 2 + 1)
+
+/**
+ * struct ubi_debug_info - debugging information for an UBI device.
+ *
+ * @chk_gen: if UBI general extra checks are enabled
+ * @chk_io: if UBI I/O extra checks are enabled
+ * @disable_bgt: disable the background task for testing purposes
+ * @emulate_bitflips: emulate bit-flips for testing purposes
+ * @emulate_io_failures: emulate write/erase failures for testing purposes
+ * @dfs_dir_name: name of debugfs directory containing files of this UBI device
+ * @dfs_dir: direntry object of the UBI device debugfs directory
+ * @dfs_chk_gen: debugfs knob to enable UBI general extra checks
+ * @dfs_chk_io: debugfs knob to enable UBI I/O extra checks
+ * @dfs_disable_bgt: debugfs knob to disable the background task
+ * @dfs_emulate_bitflips: debugfs knob to emulate bit-flips
+ * @dfs_emulate_io_failures: debugfs knob to emulate write/erase failures
+ */
+struct ubi_debug_info {
+ unsigned int chk_gen:1;
+ unsigned int chk_io:1;
+ unsigned int disable_bgt:1;
+ unsigned int emulate_bitflips:1;
+ unsigned int emulate_io_failures:1;
+ char dfs_dir_name[UBI_DFS_DIR_LEN + 1];
+ struct dentry *dfs_dir;
+ struct dentry *dfs_chk_gen;
+ struct dentry *dfs_chk_io;
+ struct dentry *dfs_disable_bgt;
+ struct dentry *dfs_emulate_bitflips;
+ struct dentry *dfs_emulate_io_failures;
+};
+
+/**
+ * ubi_dbg_is_bgt_disabled - if the background thread is disabled.
+ * @ubi: UBI device description object
+ *
+ * Returns non-zero if the UBI background thread is disabled for testing
+ * purposes.
+ */
+static inline int ubi_dbg_is_bgt_disabled(const struct ubi_device *ubi)
+{
+ return ubi->dbg->disable_bgt;
+}
+
+/**
+ * ubi_dbg_is_bitflip - if it is time to emulate a bit-flip.
+ * @ubi: UBI device description object
+ *
+ * Returns non-zero if a bit-flip should be emulated, otherwise returns zero.
+ */
+static inline int ubi_dbg_is_bitflip(const struct ubi_device *ubi)
+{
+ if (ubi->dbg->emulate_bitflips)
+ return !(random32() % 200);
+ return 0;
+}
+
+/**
+ * ubi_dbg_is_write_failure - if it is time to emulate a write failure.
+ * @ubi: UBI device description object
+ *
+ * Returns non-zero if a write failure should be emulated, otherwise returns
+ * zero.
+ */
+static inline int ubi_dbg_is_write_failure(const struct ubi_device *ubi)
+{
+ if (ubi->dbg->emulate_io_failures)
+ return !(random32() % 500);
+ return 0;
+}
+
+/**
+ * ubi_dbg_is_erase_failure - if its time to emulate an erase failure.
+ * @ubi: UBI device description object
+ *
+ * Returns non-zero if an erase failure should be emulated, otherwise returns
+ * zero.
+ */
+static inline int ubi_dbg_is_erase_failure(const struct ubi_device *ubi)
+{
+ if (ubi->dbg->emulate_io_failures)
+ return !(random32() % 400);
+ return 0;
+}
+
+#else
+
+/* Use "if (0)" to make compiler check arguments even if debugging is off */
+#define ubi_assert(expr) do { \
+ if (0) { \
+ printk(KERN_CRIT "UBI assert failed in %s at %u (pid %d)\n", \
+ __func__, __LINE__, current->pid); \
+ } \
+} while (0)
+
+#define dbg_err(fmt, ...) do { \
+ if (0) \
+ ubi_err(fmt, ##__VA_ARGS__); \
+} while (0)
+
+#define ubi_dbg_msg(fmt, ...) do { \
+ if (0) \
+ printk(KERN_DEBUG fmt "\n", ##__VA_ARGS__); \
+} while (0)
+
+#define dbg_msg(fmt, ...) ubi_dbg_msg(fmt, ##__VA_ARGS__)
+#define dbg_gen(fmt, ...) ubi_dbg_msg(fmt, ##__VA_ARGS__)
+#define dbg_eba(fmt, ...) ubi_dbg_msg(fmt, ##__VA_ARGS__)
+#define dbg_wl(fmt, ...) ubi_dbg_msg(fmt, ##__VA_ARGS__)
+#define dbg_io(fmt, ...) ubi_dbg_msg(fmt, ##__VA_ARGS__)
+#define dbg_bld(fmt, ...) ubi_dbg_msg(fmt, ##__VA_ARGS__)
+
+static inline void ubi_dbg_dump_stack(void) { return; }
+static inline void
+ubi_dbg_dump_ec_hdr(const struct ubi_ec_hdr *ec_hdr) { return; }
+static inline void
+ubi_dbg_dump_vid_hdr(const struct ubi_vid_hdr *vid_hdr) { return; }
+static inline void
+ubi_dbg_dump_vol_info(const struct ubi_volume *vol) { return; }
+static inline void
+ubi_dbg_dump_vtbl_record(const struct ubi_vtbl_record *r, int idx) { return; }
+static inline void ubi_dbg_dump_sv(const struct ubi_scan_volume *sv) { return; }
+static inline void ubi_dbg_dump_seb(const struct ubi_scan_leb *seb,
+ int type) { return; }
+static inline void
+ubi_dbg_dump_mkvol_req(const struct ubi_mkvol_req *req) { return; }
+static inline void ubi_dbg_dump_flash(struct ubi_device *ubi,
+ int pnum, int offset, int len) { return; }
+static inline void
+ubi_dbg_print_hex_dump(const char *l, const char *ps, int pt, int r,
+ int g, const void *b, size_t len, bool a) { return; }
+static inline int ubi_dbg_check_all_ff(struct ubi_device *ubi,
+ int pnum, int offset,
+ int len) { return 0; }
+static inline int ubi_dbg_check_write(struct ubi_device *ubi,
+ const void *buf, int pnum,
+ int offset, int len) { return 0; }
+
+static inline int ubi_debugging_init_dev(struct ubi_device *ubi) { return 0; }
+static inline void ubi_debugging_exit_dev(struct ubi_device *ubi) { return; }
+static inline int ubi_debugfs_init(void) { return 0; }
+static inline void ubi_debugfs_exit(void) { return; }
+static inline int ubi_debugfs_init_dev(struct ubi_device *ubi) { return 0; }
+static inline void ubi_debugfs_exit_dev(struct ubi_device *ubi) { return; }
+
+static inline int
+ubi_dbg_is_bgt_disabled(const struct ubi_device *ubi) { return 0; }
+static inline int ubi_dbg_is_bitflip(const struct ubi_device *ubi) { return 0; }
+static inline int
+ubi_dbg_is_write_failure(const struct ubi_device *ubi) { return 0; }
+static inline int
+ubi_dbg_is_erase_failure(const struct ubi_device *ubi) { return 0; }
+
+#endif /* !CONFIG_MTD_UBI_DEBUG */
+#endif /* !__UBI_DEBUG_H__ */