From 7996a3d79d55b7f879dfd62e202bbfe2963718d3 Mon Sep 17 00:00:00 2001
From: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date: Sat, 27 Jul 2013 22:15:01 +0000
Subject: really properly move files
---
.../contrib/include/linux/mtd/flashchip.h | 92 ++++++++++++++++++++++
1 file changed, 92 insertions(+)
create mode 100644 libdde-linux26/contrib/include/linux/mtd/flashchip.h
(limited to 'libdde-linux26/contrib/include/linux/mtd/flashchip.h')
diff --git a/libdde-linux26/contrib/include/linux/mtd/flashchip.h b/libdde-linux26/contrib/include/linux/mtd/flashchip.h
new file mode 100644
index 00000000..d4f38c5f
--- /dev/null
+++ b/libdde-linux26/contrib/include/linux/mtd/flashchip.h
@@ -0,0 +1,92 @@
+
+/*
+ * struct flchip definition
+ *
+ * Contains information about the location and state of a given flash device
+ *
+ * (C) 2000 Red Hat. GPLd.
+ */
+
+#ifndef __MTD_FLASHCHIP_H__
+#define __MTD_FLASHCHIP_H__
+
+/* For spinlocks. sched.h includes spinlock.h from whichever directory it
+ * happens to be in - so we don't have to care whether we're on 2.2, which
+ * has asm/spinlock.h, or 2.4, which has linux/spinlock.h
+ */
+#include <linux/sched.h>
+
+typedef enum {
+ FL_READY,
+ FL_STATUS,
+ FL_CFI_QUERY,
+ FL_JEDEC_QUERY,
+ FL_ERASING,
+ FL_ERASE_SUSPENDING,
+ FL_ERASE_SUSPENDED,
+ FL_WRITING,
+ FL_WRITING_TO_BUFFER,
+ FL_OTP_WRITE,
+ FL_WRITE_SUSPENDING,
+ FL_WRITE_SUSPENDED,
+ FL_PM_SUSPENDED,
+ FL_SYNCING,
+ FL_UNLOADING,
+ FL_LOCKING,
+ FL_UNLOCKING,
+ FL_POINT,
+ FL_XIP_WHILE_ERASING,
+ FL_XIP_WHILE_WRITING,
+ FL_SHUTDOWN,
+ FL_UNKNOWN
+} flstate_t;
+
+
+
+/* NOTE: confusingly, this can be used to refer to more than one chip at a time,
+ if they're interleaved. This can even refer to individual partitions on
+ the same physical chip when present. */
+
+struct flchip {
+ unsigned long start; /* Offset within the map */
+ // unsigned long len;
+ /* We omit len for now, because when we group them together
+ we insist that they're all of the same size, and the chip size
+ is held in the next level up. If we get more versatile later,
+ it'll make it a damn sight harder to find which chip we want from
+ a given offset, and we'll want to add the per-chip length field
+ back in.
+ */
+ int ref_point_counter;
+ flstate_t state;
+ flstate_t oldstate;
+
+ unsigned int write_suspended:1;
+ unsigned int erase_suspended:1;
+ unsigned long in_progress_block_addr;
+
+ spinlock_t *mutex;
+ spinlock_t _spinlock; /* We do it like this because sometimes they'll be shared. */
+ wait_queue_head_t wq; /* Wait on here when we're waiting for the chip
+ to be ready */
+ int word_write_time;
+ int buffer_write_time;
+ int erase_time;
+
+ int word_write_time_max;
+ int buffer_write_time_max;
+ int erase_time_max;
+
+ void *priv;
+};
+
+/* This is used to handle contention on write/erase operations
+ between partitions of the same physical chip. */
+struct flchip_shared {
+ spinlock_t lock;
+ struct flchip *writing;
+ struct flchip *erasing;
+};
+
+
+#endif /* __MTD_FLASHCHIP_H__ */
--
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