pstore/ram: Move internal definitions out of kernel-wide include

Most of the details of the ram backend are entirely internal to the
backend itself. Leave only what is needed to instantiate a ram backend
in the kernel-wide header.

Cc: Anton Vorontsov <anton@enomsg.org>
Cc: Colin Cross <ccross@android.com>
Cc: Tony Luck <tony.luck@intel.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-and-tested-by: Guilherme G. Piccoli <gpiccoli@igalia.com>
Link: https://lore.kernel.org/r/20221011200112.731334-4-keescook@chromium.org

1 files changed, 0 insertions, 99 deletions

diff --git a/include/linux/pstore_ram.h b/include/linux/pstore_ram.h
index 9f16afec7290..9d65ff94e216 100644
--- a/include/linux/pstore_ram.h
+++ b/include/linux/pstore_ram.h
@@ -8,28 +8,7 @@
 #ifndef __LINUX_PSTORE_RAM_H__
 #define __LINUX_PSTORE_RAM_H__
 
-#include <linux/compiler.h>
-#include <linux/device.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/list.h>
 #include <linux/pstore.h>
-#include <linux/types.h>
-
-/*
- * Choose whether access to the RAM zone requires locking or not.  If a zone
- * can be written to from different CPUs like with ftrace for example, then
- * PRZ_FLAG_NO_LOCK is used. For all other cases, locking is required.
- */
-#define PRZ_FLAG_NO_LOCK	BIT(0)
-/*
- * If a PRZ should only have a single-boot lifetime, this marks it as
- * getting wiped after its contents get copied out after boot.
- */
-#define PRZ_FLAG_ZAP_OLD	BIT(1)
-
-struct persistent_ram_buffer;
-struct rs_control;
 
 struct persistent_ram_ecc_info {
 	int block_size;
@@ -39,84 +18,6 @@ struct persistent_ram_ecc_info {
 	uint16_t *par;
 };
 
-/**
- * struct persistent_ram_zone - Details of a persistent RAM zone (PRZ)
- *                              used as a pstore backend
- *
- * @paddr:	physical address of the mapped RAM area
- * @size:	size of mapping
- * @label:	unique name of this PRZ
- * @type:	frontend type for this PRZ
- * @flags:	holds PRZ_FLAGS_* bits
- *
- * @buffer_lock:
- *	locks access to @buffer "size" bytes and "start" offset
- * @buffer:
- *	pointer to actual RAM area managed by this PRZ
- * @buffer_size:
- *	bytes in @buffer->data (not including any trailing ECC bytes)
- *
- * @par_buffer:
- *	pointer into @buffer->data containing ECC bytes for @buffer->data
- * @par_header:
- *	pointer into @buffer->data containing ECC bytes for @buffer header
- *	(i.e. all fields up to @data)
- * @rs_decoder:
- *	RSLIB instance for doing ECC calculations
- * @corrected_bytes:
- *	ECC corrected bytes accounting since boot
- * @bad_blocks:
- *	ECC uncorrectable bytes accounting since boot
- * @ecc_info:
- *	ECC configuration details
- *
- * @old_log:
- *	saved copy of @buffer->data prior to most recent wipe
- * @old_log_size:
- *	bytes contained in @old_log
- *
- */
-struct persistent_ram_zone {
-	phys_addr_t paddr;
-	size_t size;
-	void *vaddr;
-	char *label;
-	enum pstore_type_id type;
-	u32 flags;
-
-	raw_spinlock_t buffer_lock;
-	struct persistent_ram_buffer *buffer;
-	size_t buffer_size;
-
-	char *par_buffer;
-	char *par_header;
-	struct rs_control *rs_decoder;
-	int corrected_bytes;
-	int bad_blocks;
-	struct persistent_ram_ecc_info ecc_info;
-
-	char *old_log;
-	size_t old_log_size;
-};
-
-struct persistent_ram_zone *persistent_ram_new(phys_addr_t start, size_t size,
-			u32 sig, struct persistent_ram_ecc_info *ecc_info,
-			unsigned int memtype, u32 flags, char *label);
-void persistent_ram_free(struct persistent_ram_zone *prz);
-void persistent_ram_zap(struct persistent_ram_zone *prz);
-
-int persistent_ram_write(struct persistent_ram_zone *prz, const void *s,
-			 unsigned int count);
-int persistent_ram_write_user(struct persistent_ram_zone *prz,
-			      const void __user *s, unsigned int count);
-
-void persistent_ram_save_old(struct persistent_ram_zone *prz);
-size_t persistent_ram_old_size(struct persistent_ram_zone *prz);
-void *persistent_ram_old(struct persistent_ram_zone *prz);
-void persistent_ram_free_old(struct persistent_ram_zone *prz);
-ssize_t persistent_ram_ecc_string(struct persistent_ram_zone *prz,
-	char *str, size_t len);
-
 /*
  * Ramoops platform data
  * @mem_size	memory size for ramoops