arch/csky/mm/cachev2.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 // Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
   3
   4 #include <linux/spinlock.h>
   5 #include <linux/smp.h>
   6 #include <asm/cache.h>
   7 #include <asm/barrier.h>
   8
   9 inline void dcache_wb_line(unsigned long start)
  10 {
  11         asm volatile("dcache.cval1 %0\n"::"r"(start):"memory");
  12         sync_is();
  13 }
  14
  15 void icache_inv_range(unsigned long start, unsigned long end)
  16 {
  17         unsigned long i = start & ~(L1_CACHE_BYTES - 1);
  18
  19         for (; i < end; i += L1_CACHE_BYTES)
  20                 asm volatile("icache.iva %0\n"::"r"(i):"memory");
  21         sync_is();
  22 }
  23
  24 void icache_inv_all(void)
  25 {
  26         asm volatile("icache.ialls\n":::"memory");
  27         sync_is();
  28 }
  29
  30 void dcache_wb_range(unsigned long start, unsigned long end)
  31 {
  32         unsigned long i = start & ~(L1_CACHE_BYTES - 1);
  33
  34         for (; i < end; i += L1_CACHE_BYTES)
  35                 asm volatile("dcache.cval1 %0\n"::"r"(i):"memory");
  36         sync_is();
  37 }
  38
  39 void dcache_inv_range(unsigned long start, unsigned long end)
  40 {
  41         unsigned long i = start & ~(L1_CACHE_BYTES - 1);
  42
  43         for (; i < end; i += L1_CACHE_BYTES)
  44                 asm volatile("dcache.civa %0\n"::"r"(i):"memory");
  45         sync_is();
  46 }
  47
  48 void cache_wbinv_range(unsigned long start, unsigned long end)
  49 {
  50         unsigned long i = start & ~(L1_CACHE_BYTES - 1);
  51
  52         for (; i < end; i += L1_CACHE_BYTES)
  53                 asm volatile("dcache.cval1 %0\n"::"r"(i):"memory");
  54         sync_is();
  55
  56         i = start & ~(L1_CACHE_BYTES - 1);
  57         for (; i < end; i += L1_CACHE_BYTES)
  58                 asm volatile("icache.iva %0\n"::"r"(i):"memory");
  59         sync_is();
  60 }
  61 EXPORT_SYMBOL(cache_wbinv_range);
  62
  63 void dma_wbinv_range(unsigned long start, unsigned long end)
  64 {
  65         unsigned long i = start & ~(L1_CACHE_BYTES - 1);
  66
  67         for (; i < end; i += L1_CACHE_BYTES)
  68                 asm volatile("dcache.civa %0\n"::"r"(i):"memory");
  69         sync_is();
  70 }
  71
  72 void dma_inv_range(unsigned long start, unsigned long end)
  73 {
  74         unsigned long i = start & ~(L1_CACHE_BYTES - 1);
  75
  76         for (; i < end; i += L1_CACHE_BYTES)
  77                 asm volatile("dcache.iva %0\n"::"r"(i):"memory");
  78         sync_is();
  79 }
  80
  81 void dma_wb_range(unsigned long start, unsigned long end)
  82 {
  83         unsigned long i = start & ~(L1_CACHE_BYTES - 1);
  84
  85         for (; i < end; i += L1_CACHE_BYTES)
  86                 asm volatile("dcache.cva %0\n"::"r"(i):"memory");
  87         sync_is();
  88 }