1 files changed, 0 insertions, 193 deletions
diff --git a/arch/metag/mm/l2cache.c b/arch/metag/mm/l2cache.c
deleted file mode 100644
index addffc58989c..000000000000
--- a/arch/metag/mm/l2cache.c
+++ /dev/null
@@ -1,193 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/delay.h>
-
-#include <asm/l2cache.h>
-#include <asm/metag_isa.h>
-
-/* If non-0, then initialise the L2 cache */
-static int l2cache_init = 1;
-/* If non-0, then initialise the L2 cache prefetch */
-static int l2cache_init_pf = 1;
-
-int l2c_pfenable;
-
-static volatile u32 l2c_testdata[16] __initdata __aligned(64);
-
-static int __init parse_l2cache(char *p)
-{
-	char *cp = p;
-
-	if (get_option(&cp, &l2cache_init) != 1) {
-		pr_err("Bad l2cache parameter (%s)\n", p);
-		return 1;
-	}
-	return 0;
-}
-early_param("l2cache", parse_l2cache);
-
-static int __init parse_l2cache_pf(char *p)
-{
-	char *cp = p;
-
-	if (get_option(&cp, &l2cache_init_pf) != 1) {
-		pr_err("Bad l2cache_pf parameter (%s)\n", p);
-		return 1;
-	}
-	return 0;
-}
-early_param("l2cache_pf", parse_l2cache_pf);
-
-static int __init meta_l2c_setup(void)
-{
-	/*
-	 * If the L2 cache isn't even present, don't do anything, but say so in
-	 * the log.
-	 */
-	if (!meta_l2c_is_present()) {
-		pr_info("L2 Cache: Not present\n");
-		return 0;
-	}
-
-	/*
-	 * Check whether the line size is recognised.
-	 */
-	if (!meta_l2c_linesize()) {
-		pr_warn_once("L2 Cache: unknown line size id (config=0x%08x)\n",
-			     meta_l2c_config());
-	}
-
-	/*
-	 * Initialise state.
-	 */
-	l2c_pfenable = _meta_l2c_pf_is_enabled();
-
-	/*
-	 * Enable the L2 cache and print to log whether it was already enabled
-	 * by the bootloader.
-	 */
-	if (l2cache_init) {
-		pr_info("L2 Cache: Enabling... ");
-		if (meta_l2c_enable())
-			pr_cont("already enabled\n");
-		else
-			pr_cont("done\n");
-	} else {
-		pr_info("L2 Cache: Not enabling\n");
-	}
-
-	/*
-	 * Enable L2 cache prefetch.
-	 */
-	if (l2cache_init_pf) {
-		pr_info("L2 Cache: Enabling prefetch... ");
-		if (meta_l2c_pf_enable(1))
-			pr_cont("already enabled\n");
-		else
-			pr_cont("done\n");
-	} else {
-		pr_info("L2 Cache: Not enabling prefetch\n");
-	}
-
-	return 0;
-}
-core_initcall(meta_l2c_setup);
-
-int meta_l2c_disable(void)
-{
-	unsigned long flags;
-	int en;
-
-	if (!meta_l2c_is_present())
-		return 1;
-
-	/*
-	 * Prevent other threads writing during the writeback, otherwise the
-	 * writes will get "lost" when the L2 is disabled.
-	 */
-	__global_lock2(flags);
-	en = meta_l2c_is_enabled();
-	if (likely(en)) {
-		_meta_l2c_pf_enable(0);
-		wr_fence();
-		_meta_l2c_purge();
-		_meta_l2c_enable(0);
-	}
-	__global_unlock2(flags);
-
-	return !en;
-}
-
-int meta_l2c_enable(void)
-{
-	unsigned long flags;
-	int en;
-
-	if (!meta_l2c_is_present())
-		return 0;
-
-	/*
-	 * Init (clearing the L2) can happen while the L2 is disabled, so other
-	 * threads are safe to continue executing, however we must not init the
-	 * cache if it's already enabled (dirty lines would be discarded), so
-	 * this operation should still be atomic with other threads.
-	 */
-	__global_lock1(flags);
-	en = meta_l2c_is_enabled();
-	if (likely(!en)) {
-		_meta_l2c_init();
-		_meta_l2c_enable(1);
-		_meta_l2c_pf_enable(l2c_pfenable);
-	}
-	__global_unlock1(flags);
-
-	return en;
-}
-
-int meta_l2c_pf_enable(int pfenable)
-{
-	unsigned long flags;
-	int en = l2c_pfenable;
-
-	if (!meta_l2c_is_present())
-		return 0;
-
-	/*
-	 * We read modify write the enable register, so this operation must be
-	 * atomic with other threads.
-	 */
-	__global_lock1(flags);
-	en = l2c_pfenable;
-	l2c_pfenable = pfenable;
-	if (meta_l2c_is_enabled())
-		_meta_l2c_pf_enable(pfenable);
-	__global_unlock1(flags);
-
-	return en;
-}
-
-int meta_l2c_flush(void)
-{
-	unsigned long flags;
-	int en;
-
-	/*
-	 * Prevent other threads writing during the writeback. This also
-	 * involves read modify writes.
-	 */
-	__global_lock2(flags);
-	en = meta_l2c_is_enabled();
-	if (likely(en)) {
-		_meta_l2c_pf_enable(0);
-		wr_fence();
-		_meta_l2c_purge();
-		_meta_l2c_enable(0);
-		_meta_l2c_init();
-		_meta_l2c_enable(1);
-		_meta_l2c_pf_enable(l2c_pfenable);
-	}
-	__global_unlock2(flags);
-
-	return !en;
-}