cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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dcr.h (2108B)

      1/* SPDX-License-Identifier: GPL-2.0-or-later */
      2/*
      3 * (c) Copyright 2006 Benjamin Herrenschmidt, IBM Corp.
      4 *                    <benh@kernel.crashing.org>
      5 */
      6
      7#ifndef _ASM_POWERPC_DCR_H
      8#define _ASM_POWERPC_DCR_H
      9#ifdef __KERNEL__
     10#ifndef __ASSEMBLY__
     11#ifdef CONFIG_PPC_DCR
     12
     13#ifdef CONFIG_PPC_DCR_NATIVE
     14#include <asm/dcr-native.h>
     15#endif
     16
     17#ifdef CONFIG_PPC_DCR_MMIO
     18#include <asm/dcr-mmio.h>
     19#endif
     20
     21
     22/* Indirection layer for providing both NATIVE and MMIO support. */
     23
     24#if defined(CONFIG_PPC_DCR_NATIVE) && defined(CONFIG_PPC_DCR_MMIO)
     25
     26#include <asm/dcr-generic.h>
     27
     28#define DCR_MAP_OK(host)	dcr_map_ok_generic(host)
     29#define dcr_map(dev, dcr_n, dcr_c) dcr_map_generic(dev, dcr_n, dcr_c)
     30#define dcr_unmap(host, dcr_c) dcr_unmap_generic(host, dcr_c)
     31#define dcr_read(host, dcr_n) dcr_read_generic(host, dcr_n)
     32#define dcr_write(host, dcr_n, value) dcr_write_generic(host, dcr_n, value)
     33
     34#else
     35
     36#ifdef CONFIG_PPC_DCR_NATIVE
     37typedef dcr_host_native_t dcr_host_t;
     38#define DCR_MAP_OK(host)	dcr_map_ok_native(host)
     39#define dcr_map(dev, dcr_n, dcr_c) dcr_map_native(dev, dcr_n, dcr_c)
     40#define dcr_unmap(host, dcr_c) dcr_unmap_native(host, dcr_c)
     41#define dcr_read(host, dcr_n) dcr_read_native(host, dcr_n)
     42#define dcr_write(host, dcr_n, value) dcr_write_native(host, dcr_n, value)
     43#else
     44typedef dcr_host_mmio_t dcr_host_t;
     45#define DCR_MAP_OK(host)	dcr_map_ok_mmio(host)
     46#define dcr_map(dev, dcr_n, dcr_c) dcr_map_mmio(dev, dcr_n, dcr_c)
     47#define dcr_unmap(host, dcr_c) dcr_unmap_mmio(host, dcr_c)
     48#define dcr_read(host, dcr_n) dcr_read_mmio(host, dcr_n)
     49#define dcr_write(host, dcr_n, value) dcr_write_mmio(host, dcr_n, value)
     50#endif
     51
     52#endif /* defined(CONFIG_PPC_DCR_NATIVE) && defined(CONFIG_PPC_DCR_MMIO) */
     53
     54/*
     55 * additional helpers to read the DCR * base from the device-tree
     56 */
     57struct device_node;
     58extern unsigned int dcr_resource_start(const struct device_node *np,
     59				       unsigned int index);
     60extern unsigned int dcr_resource_len(const struct device_node *np,
     61				     unsigned int index);
     62#endif /* CONFIG_PPC_DCR */
     63#endif /* __ASSEMBLY__ */
     64#endif /* __KERNEL__ */
     65#endif /* _ASM_POWERPC_DCR_H */