1 files changed, 0 insertions, 259 deletions
diff --git a/arch/metag/include/asm/l2cache.h b/arch/metag/include/asm/l2cache.h
deleted file mode 100644
index f260b158b8fe..000000000000
--- a/arch/metag/include/asm/l2cache.h
+++ /dev/null
@@ -1,259 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _METAG_L2CACHE_H
-#define _METAG_L2CACHE_H
-
-#ifdef CONFIG_METAG_L2C
-
-#include <asm/global_lock.h>
-#include <asm/io.h>
-
-/*
- * Store the last known value of pfenable (we don't want prefetch enabled while
- * L2 is off).
- */
-extern int l2c_pfenable;
-
-/* defined in arch/metag/drivers/core-sysfs.c */
-extern struct sysdev_class cache_sysclass;
-
-static inline void wr_fence(void);
-
-/*
- * Functions for reading of L2 cache configuration.
- */
-
-/* Get raw L2 config register (CORE_CONFIG3) */
-static inline unsigned int meta_l2c_config(void)
-{
-	const unsigned int *corecfg3 = (const unsigned int *)METAC_CORE_CONFIG3;
-	return *corecfg3;
-}
-
-/* Get whether the L2 is present */
-static inline int meta_l2c_is_present(void)
-{
-	return meta_l2c_config() & METAC_CORECFG3_L2C_HAVE_L2C_BIT;
-}
-
-/* Get whether the L2 is configured for write-back instead of write-through */
-static inline int meta_l2c_is_writeback(void)
-{
-	return meta_l2c_config() & METAC_CORECFG3_L2C_MODE_BIT;
-}
-
-/* Get whether the L2 is unified instead of separated code/data */
-static inline int meta_l2c_is_unified(void)
-{
-	return meta_l2c_config() & METAC_CORECFG3_L2C_UNIFIED_BIT;
-}
-
-/* Get the L2 cache size in bytes */
-static inline unsigned int meta_l2c_size(void)
-{
-	unsigned int size_s;
-	if (!meta_l2c_is_present())
-		return 0;
-	size_s = (meta_l2c_config() & METAC_CORECFG3_L2C_SIZE_BITS)
-			>> METAC_CORECFG3_L2C_SIZE_S;
-	/* L2CSIZE is in KiB */
-	return 1024 << size_s;
-}
-
-/* Get the number of ways in the L2 cache */
-static inline unsigned int meta_l2c_ways(void)
-{
-	unsigned int ways_s;
-	if (!meta_l2c_is_present())
-		return 0;
-	ways_s = (meta_l2c_config() & METAC_CORECFG3_L2C_NUM_WAYS_BITS)
-			>> METAC_CORECFG3_L2C_NUM_WAYS_S;
-	return 0x1 << ways_s;
-}
-
-/* Get the line size of the L2 cache */
-static inline unsigned int meta_l2c_linesize(void)
-{
-	unsigned int line_size;
-	if (!meta_l2c_is_present())
-		return 0;
-	line_size = (meta_l2c_config() & METAC_CORECFG3_L2C_LINE_SIZE_BITS)
-			>> METAC_CORECFG3_L2C_LINE_SIZE_S;
-	switch (line_size) {
-	case METAC_CORECFG3_L2C_LINE_SIZE_64B:
-		return 64;
-	default:
-		return 0;
-	}
-}
-
-/* Get the revision ID of the L2 cache */
-static inline unsigned int meta_l2c_revision(void)
-{
-	return (meta_l2c_config() & METAC_CORECFG3_L2C_REV_ID_BITS)
-			>> METAC_CORECFG3_L2C_REV_ID_S;
-}
-
-
-/*
- * Start an initialisation of the L2 cachelines and wait for completion.
- * This should only be done in a LOCK1 or LOCK2 critical section while the L2
- * is disabled.
- */
-static inline void _meta_l2c_init(void)
-{
-	metag_out32(SYSC_L2C_INIT_INIT, SYSC_L2C_INIT);
-	while (metag_in32(SYSC_L2C_INIT) == SYSC_L2C_INIT_IN_PROGRESS)
-		/* do nothing */;
-}
-
-/*
- * Start a writeback of dirty L2 cachelines and wait for completion.
- * This should only be done in a LOCK1 or LOCK2 critical section.
- */
-static inline void _meta_l2c_purge(void)
-{
-	metag_out32(SYSC_L2C_PURGE_PURGE, SYSC_L2C_PURGE);
-	while (metag_in32(SYSC_L2C_PURGE) == SYSC_L2C_PURGE_IN_PROGRESS)
-		/* do nothing */;
-}
-
-/* Set whether the L2 cache is enabled. */
-static inline void _meta_l2c_enable(int enabled)
-{
-	unsigned int enable;
-
-	enable = metag_in32(SYSC_L2C_ENABLE);
-	if (enabled)
-		enable |= SYSC_L2C_ENABLE_ENABLE_BIT;
-	else
-		enable &= ~SYSC_L2C_ENABLE_ENABLE_BIT;
-	metag_out32(enable, SYSC_L2C_ENABLE);
-}
-
-/* Set whether the L2 cache prefetch is enabled. */
-static inline void _meta_l2c_pf_enable(int pfenabled)
-{
-	unsigned int enable;
-
-	enable = metag_in32(SYSC_L2C_ENABLE);
-	if (pfenabled)
-		enable |= SYSC_L2C_ENABLE_PFENABLE_BIT;
-	else
-		enable &= ~SYSC_L2C_ENABLE_PFENABLE_BIT;
-	metag_out32(enable, SYSC_L2C_ENABLE);
-}
-
-/* Return whether the L2 cache is enabled */
-static inline int _meta_l2c_is_enabled(void)
-{
-	return metag_in32(SYSC_L2C_ENABLE) & SYSC_L2C_ENABLE_ENABLE_BIT;
-}
-
-/* Return whether the L2 cache prefetch is enabled */
-static inline int _meta_l2c_pf_is_enabled(void)
-{
-	return metag_in32(SYSC_L2C_ENABLE) & SYSC_L2C_ENABLE_PFENABLE_BIT;
-}
-
-
-/* Return whether the L2 cache is enabled */
-static inline int meta_l2c_is_enabled(void)
-{
-	int en;
-
-	/*
-	 * There is no need to lock at the moment, as the enable bit is never
-	 * intermediately changed, so we will never see an intermediate result.
-	 */
-	en = _meta_l2c_is_enabled();
-
-	return en;
-}
-
-/*
- * Ensure the L2 cache is disabled.
- * Return whether the L2 was previously disabled.
- */
-int meta_l2c_disable(void);
-
-/*
- * Ensure the L2 cache is enabled.
- * Return whether the L2 was previously enabled.
- */
-int meta_l2c_enable(void);
-
-/* Return whether the L2 cache prefetch is enabled */
-static inline int meta_l2c_pf_is_enabled(void)
-{
-	return l2c_pfenable;
-}
-
-/*
- * Set whether the L2 cache prefetch is enabled.
- * Return whether the L2 prefetch was previously enabled.
- */
-int meta_l2c_pf_enable(int pfenable);
-
-/*
- * Flush the L2 cache.
- * Return 1 if the L2 is disabled.
- */
-int meta_l2c_flush(void);
-
-/*
- * Write back all dirty cache lines in the L2 cache.
- * Return 1 if the L2 is disabled or there isn't any writeback.
- */
-static inline int meta_l2c_writeback(void)
-{
-	unsigned long flags;
-	int en;
-
-	/* no need to purge if it's not a writeback cache */
-	if (!meta_l2c_is_writeback())
-		return 1;
-
-	/*
-	 * Purge only works if the L2 is enabled, and involves reading back to
-	 * detect completion, so keep this operation atomic with other threads.
-	 */
-	__global_lock1(flags);
-	en = meta_l2c_is_enabled();
-	if (likely(en)) {
-		wr_fence();
-		_meta_l2c_purge();
-	}
-	__global_unlock1(flags);
-
-	return !en;
-}
-
-#else /* CONFIG_METAG_L2C */
-
-#define meta_l2c_config()		0
-#define meta_l2c_is_present()		0
-#define meta_l2c_is_writeback()		0
-#define meta_l2c_is_unified()		0
-#define meta_l2c_size()			0
-#define meta_l2c_ways()			0
-#define meta_l2c_linesize()		0
-#define meta_l2c_revision()		0
-
-#define meta_l2c_is_enabled()		0
-#define _meta_l2c_pf_is_enabled()	0
-#define meta_l2c_pf_is_enabled()	0
-#define meta_l2c_disable()		1
-#define meta_l2c_enable()		0
-#define meta_l2c_pf_enable(X)		0
-static inline int meta_l2c_flush(void)
-{
-	return 1;
-}
-static inline int meta_l2c_writeback(void)
-{
-	return 1;
-}
-
-#endif /* CONFIG_METAG_L2C */
-
-#endif /* _METAG_L2CACHE_H */