+++ /dev/null
-/* Copyright 2018 SiFive, Inc */
-/* SPDX-License-Identifier: Apache-2.0 */
-
-#include <metal/machine/platform.h>
-
-#ifdef METAL_SIFIVE_FU540_C000_L2
-
-#include <stdint.h>
-#include <metal/io.h>
-#include <metal/drivers/sifive_fu540-c000_l2.h>
-#include <metal/machine.h>
-
-#define L2_CONFIG_WAYS_SHIFT 8
-#define L2_CONFIG_WAYS_MASK (0xFF << L2_CONFIG_WAYS_SHIFT)
-
-void __metal_driver_sifive_fu540_c000_l2_init(struct metal_cache *l2, int ways);
-
-static void metal_driver_sifive_fu540_c000_l2_init(void) __attribute__((constructor));
-static void metal_driver_sifive_fu540_c000_l2_init(void)
-{
-#ifdef __METAL_DT_SIFIVE_FU540_C000_L2_HANDLE
- /* Get the handle for the L2 cache controller */
- struct metal_cache *l2 = __METAL_DT_SIFIVE_FU540_C000_L2_HANDLE;
- if(!l2) {
- return;
- }
-
- /* Get the number of available ways per bank */
- unsigned long control_base = __metal_driver_sifive_fu540_c000_l2_control_base(l2);
- uint32_t ways = __METAL_ACCESS_ONCE((__metal_io_u32 *)(control_base + METAL_SIFIVE_FU540_C000_L2_CONFIG));
- ways = ((ways & L2_CONFIG_WAYS_MASK) >> L2_CONFIG_WAYS_SHIFT);
-
- /* Enable all the ways */
- __metal_driver_sifive_fu540_c000_l2_init(l2, ways);
-#endif
-}
-
-void __metal_driver_sifive_fu540_c000_l2_init(struct metal_cache *l2, int ways)
-{
- metal_cache_set_enabled_ways(l2, ways);
-}
-
-int __metal_driver_sifive_fu540_c000_l2_get_enabled_ways(struct metal_cache *cache)
-{
- unsigned long control_base = __metal_driver_sifive_fu540_c000_l2_control_base(cache);
-
- uint32_t way_enable = __METAL_ACCESS_ONCE((__metal_io_u32 *)(control_base + METAL_SIFIVE_FU540_C000_L2_WAYENABLE));
-
- /* The stored number is the index, so add one */
- return (0xFF & way_enable) + 1;
-}
-
-int __metal_driver_sifive_fu540_c000_l2_set_enabled_ways(struct metal_cache *cache, int ways)
-{
- unsigned long control_base = __metal_driver_sifive_fu540_c000_l2_control_base(cache);
-
- /* We can't decrease the number of enabled ways */
- if(metal_cache_get_enabled_ways(cache) > ways) {
- return -2;
- }
-
- /* The stored value is the index, so subtract one */
- uint32_t value = 0xFF & (ways - 1);
-
- /* Set the number of enabled ways */
- __METAL_ACCESS_ONCE((__metal_io_u32 *)(control_base + METAL_SIFIVE_FU540_C000_L2_WAYENABLE)) = value;
-
- /* Make sure the number of ways was set correctly */
- if(metal_cache_get_enabled_ways(cache) != ways) {
- return -3;
- }
-
- return 0;
-}
-
-__METAL_DEFINE_VTABLE(__metal_driver_vtable_sifive_fu540_c000_l2) = {
- .cache.init = __metal_driver_sifive_fu540_c000_l2_init,
- .cache.get_enabled_ways = __metal_driver_sifive_fu540_c000_l2_get_enabled_ways,
- .cache.set_enabled_ways = __metal_driver_sifive_fu540_c000_l2_set_enabled_ways,
-};
-
-#endif
-
-typedef int no_empty_translation_units;