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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2023 Andes Technology Corporation
* Rick Chen, Andes Technology Corporation <rick@andestech.com>
*/
#include <asm/csr.h>
#include <asm/asm.h>
#include <cache.h>
#include <cpu_func.h>
#include <dm.h>
#include <dm/uclass-internal.h>
#include <asm/arch-andes/csr.h>
#ifdef CONFIG_ANDES_L2_CACHE
void enable_caches(void)
{
struct udevice *dev;
int ret;
ret = uclass_get_device_by_driver(UCLASS_CACHE,
DM_DRIVER_GET(andes_l2_cache),
&dev);
if (ret) {
log_debug("Cannot enable Andes L2 cache\n");
} else {
ret = cache_enable(dev);
if (ret)
log_debug("Failed to enable Andes L2 cache\n");
}
}
static void cache_ops(int (*ops)(struct udevice *dev))
{
struct udevice *dev = NULL;
uclass_find_first_device(UCLASS_CACHE, &dev);
if (dev)
ops(dev);
}
#endif
void flush_dcache_all(void)
{
csr_write(CSR_UCCTLCOMMAND, CCTL_L1D_WBINVAL_ALL);
}
void flush_dcache_range(unsigned long start, unsigned long end)
{
flush_dcache_all();
}
void invalidate_dcache_range(unsigned long start, unsigned long end)
{
flush_dcache_all();
}
void icache_enable(void)
{
#if CONFIG_IS_ENABLED(RISCV_MMODE)
asm volatile("csrsi %0, 0x1" :: "i"(CSR_MCACHE_CTL));
#endif
}
void icache_disable(void)
{
#if CONFIG_IS_ENABLED(RISCV_MMODE)
asm volatile("csrci %0, 0x1" :: "i"(CSR_MCACHE_CTL));
#endif
}
void dcache_enable(void)
{
#if CONFIG_IS_ENABLED(RISCV_MMODE)
asm volatile("csrsi %0, 0x2" :: "i"(CSR_MCACHE_CTL));
#endif
#ifdef CONFIG_ANDES_L2_CACHE
cache_ops(cache_enable);
#endif
}
void dcache_disable(void)
{
#if CONFIG_IS_ENABLED(RISCV_MMODE)
asm volatile("csrci %0, 0x2" :: "i"(CSR_MCACHE_CTL));
#endif
#ifdef CONFIG_ANDES_L2_CACHE
cache_ops(cache_disable);
#endif
}
int icache_status(void)
{
int ret = 0;
#if CONFIG_IS_ENABLED(RISCV_MMODE)
asm volatile (
"csrr t1, %1\n\t"
"andi %0, t1, 0x01\n\t"
: "=r" (ret)
: "i"(CSR_MCACHE_CTL)
: "memory"
);
#endif
return !!ret;
}
int dcache_status(void)
{
int ret = 0;
#if CONFIG_IS_ENABLED(RISCV_MMODE)
asm volatile (
"csrr t1, %1\n\t"
"andi %0, t1, 0x02\n\t"
: "=r" (ret)
: "i" (CSR_MCACHE_CTL)
: "memory"
);
#endif
return !!ret;
}
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