arch/riscv/mm/pmem.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright (C) 2022 Ventana Micro Systems Inc.
   4  */
   5
   6 #include <linux/export.h>
   7 #include <linux/libnvdimm.h>
   8
   9 #include <asm/cacheflush.h>
  10 #include <asm/dma-noncoherent.h>
  11
  12 void arch_wb_cache_pmem(void *addr, size_t size)
  13 {
  14 #ifdef CONFIG_RISCV_NONSTANDARD_CACHE_OPS
  15         if (unlikely(noncoherent_cache_ops.wback)) {
  16                 noncoherent_cache_ops.wback(virt_to_phys(addr), size);
  17                 return;
  18         }
  19 #endif
  20         ALT_CMO_OP(clean, addr, size, riscv_cbom_block_size);
  21 }
  22 EXPORT_SYMBOL_GPL(arch_wb_cache_pmem);
  23
  24 void arch_invalidate_pmem(void *addr, size_t size)
  25 {
  26 #ifdef CONFIG_RISCV_NONSTANDARD_CACHE_OPS
  27         if (unlikely(noncoherent_cache_ops.inv)) {
  28                 noncoherent_cache_ops.inv(virt_to_phys(addr), size);
  29                 return;
  30         }
  31 #endif
  32         ALT_CMO_OP(inval, addr, size, riscv_cbom_block_size);
  33 }
  34 EXPORT_SYMBOL_GPL(arch_invalidate_pmem);