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git.proxmox.com Git - mirror_ubuntu-hirsute-kernel.git/blob - arch/csky/mm/cachev2.c
1 // SPDX-License-Identifier: GPL-2.0
2 // Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
4 #include <linux/spinlock.h>
8 #include <asm/barrier.h>
10 #define INS_CACHE (1 << 0)
11 #define CACHE_INV (1 << 4)
13 void local_icache_inv_all(void *priv
)
15 mtcr("cr17", INS_CACHE
|CACHE_INV
);
19 void icache_inv_all(void)
21 on_each_cpu(local_icache_inv_all
, NULL
, 1);
24 #ifdef CONFIG_CPU_HAS_ICACHE_INS
25 void icache_inv_range(unsigned long start
, unsigned long end
)
27 unsigned long i
= start
& ~(L1_CACHE_BYTES
- 1);
29 for (; i
< end
; i
+= L1_CACHE_BYTES
)
30 asm volatile("icache.iva %0\n"::"r"(i
):"memory");
34 void icache_inv_range(unsigned long start
, unsigned long end
)
40 inline void dcache_wb_line(unsigned long start
)
42 asm volatile("dcache.cval1 %0\n"::"r"(start
):"memory");
46 void dcache_wb_range(unsigned long start
, unsigned long end
)
48 unsigned long i
= start
& ~(L1_CACHE_BYTES
- 1);
50 for (; i
< end
; i
+= L1_CACHE_BYTES
)
51 asm volatile("dcache.cval1 %0\n"::"r"(i
):"memory");
55 void cache_wbinv_range(unsigned long start
, unsigned long end
)
57 dcache_wb_range(start
, end
);
58 icache_inv_range(start
, end
);
60 EXPORT_SYMBOL(cache_wbinv_range
);
62 void dma_wbinv_range(unsigned long start
, unsigned long end
)
64 unsigned long i
= start
& ~(L1_CACHE_BYTES
- 1);
66 for (; i
< end
; i
+= L1_CACHE_BYTES
)
67 asm volatile("dcache.civa %0\n"::"r"(i
):"memory");
71 void dma_inv_range(unsigned long start
, unsigned long end
)
73 unsigned long i
= start
& ~(L1_CACHE_BYTES
- 1);
75 for (; i
< end
; i
+= L1_CACHE_BYTES
)
76 asm volatile("dcache.iva %0\n"::"r"(i
):"memory");
80 void dma_wb_range(unsigned long start
, unsigned long end
)
82 unsigned long i
= start
& ~(L1_CACHE_BYTES
- 1);
84 for (; i
< end
; i
+= L1_CACHE_BYTES
)
85 asm volatile("dcache.cva %0\n"::"r"(i
):"memory");