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@@ -2,6 +2,9 @@
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* Core registration and callback routines for MTD
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* Core registration and callback routines for MTD
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* drivers and users.
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* drivers and users.
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*
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*
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+ * bdi bits are:
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+ * Copyright © 2006 Red Hat, Inc. All Rights Reserved.
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+ * Written by David Howells (dhowells@redhat.com)
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*/
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*/
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#include <linux/module.h>
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#include <linux/module.h>
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@@ -16,11 +19,39 @@
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#include <linux/init.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/compatmac.h>
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#include <linux/proc_fs.h>
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#include <linux/proc_fs.h>
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+#include <linux/backing-dev.h>
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/mtd.h>
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-#include "internal.h"
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#include "mtdcore.h"
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#include "mtdcore.h"
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+/*
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+ * backing device capabilities for non-mappable devices (such as NAND flash)
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+ * - permits private mappings, copies are taken of the data
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+ */
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+struct backing_dev_info mtd_bdi_unmappable = {
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+ .capabilities = BDI_CAP_MAP_COPY,
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+};
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+
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+/*
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+ * backing device capabilities for R/O mappable devices (such as ROM)
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+ * - permits private mappings, copies are taken of the data
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+ * - permits non-writable shared mappings
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+ */
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+struct backing_dev_info mtd_bdi_ro_mappable = {
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+ .capabilities = (BDI_CAP_MAP_COPY | BDI_CAP_MAP_DIRECT |
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+ BDI_CAP_EXEC_MAP | BDI_CAP_READ_MAP),
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+};
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+
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+/*
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+ * backing device capabilities for writable mappable devices (such as RAM)
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+ * - permits private mappings, copies are taken of the data
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+ * - permits non-writable shared mappings
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+ */
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+struct backing_dev_info mtd_bdi_rw_mappable = {
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+ .capabilities = (BDI_CAP_MAP_COPY | BDI_CAP_MAP_DIRECT |
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+ BDI_CAP_EXEC_MAP | BDI_CAP_READ_MAP |
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+ BDI_CAP_WRITE_MAP),
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+};
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static int mtd_cls_suspend(struct device *dev, pm_message_t state);
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static int mtd_cls_suspend(struct device *dev, pm_message_t state);
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static int mtd_cls_resume(struct device *dev);
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static int mtd_cls_resume(struct device *dev);
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