zephyr: include: rtos: Switch to using Zephyr cache management API

Thanks to PR [1], Zephyr cache management API can now be
used on xtensa-based SoCs. As a consequence to this, there's
no longer a need to use SOF's arch/ layer for cache management.
This commit forces all SoCs which support Zephyr to use
its native cache management API.

[1]: zephyrproject-rtos/zephyr#50136

Signed-off-by: Laurentiu Mihalcea <laurentiu.mihalcea@nxp.com>

zephyr/include/rtos/cache.h

@@ -6,14 +6,61 @@
 #ifndef __ZEPHYR_RTOS_CACHE_H__
 #define __ZEPHYR_RTOS_CACHE_H__
 
-/* TODO: align with Zephyr generic cache API when ready */
 #define __SOF_LIB_CACHE_H__
-#include <arch/lib/cache.h>
+
+#include <zephyr/cache.h>
+
+#if defined(CONFIG_XTENSA) && defined(CONFIG_INTEL)
+#define SRAM_UNCACHED_ALIAS 0x20000000
+#define is_cached(ptr) ((ptr) == arch_xtensa_cached_ptr(ptr))
+#endif
 
 /* writeback and invalidate data */
 #define CACHE_WRITEBACK_INV	0
 
 /* invalidate data */
 #define CACHE_INVALIDATE	1
 
+#if !defined(CONFIG_DCACHE_LINE_SIZE_DETECT) && \
+	(CONFIG_DCACHE_LINE_SIZE > 0)
+
+#define DCACHE_LINE_SIZE CONFIG_DCACHE_LINE_SIZE
+
+#else
+
+/* If CONFIG_DCACHE_LINE_SIZE is not set appropriately then
+ * fallback to a default value. This ought to be alright
+ * since all platforms that support Zephyr use this value.
+ * This is better than forcing all vendors to set
+ * CONFIG_DCACHE_LINE_SIZE in order to avoid compilation
+ * errors.
+ */
+#define DCACHE_LINE_SIZE 128
+
+#endif
+
+static inline void dcache_writeback_region(void *addr, size_t size)
+{
+	/* TODO: return value should probably be checked here */
+	sys_cache_data_flush_range(addr, size);
+}
+
+static inline void dcache_invalidate_region(void *addr, size_t size)
+{
+	/* TODO: return value should probably be checked here */
+	sys_cache_data_invd_range(addr, size);
+}
+
+static inline void icache_invalidate_region(void *addr, size_t size)
+{
+	/* TODO: return value should probably be checked here */
+	sys_cache_instr_invd_range(addr, size);
+}
+
+static inline void dcache_writeback_invalidate_region(void *addr, size_t size)
+{
+	/* TODO: return value should probably be checked here */
+	sys_cache_data_flush_and_invd_range(addr, size);
+}
+
 #endif /* __ZEPHYR_RTOS_CACHE_H__ */