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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cs-etm-decoder.h (2368B)

      1/*
      2 * SPDX-License-Identifier: GPL-2.0
      3 *
      4 * Copyright(C) 2015-2018 Linaro Limited.
      5 *
      6 * Author: Tor Jeremiassen <tor@ti.com>
      7 * Author: Mathieu Poirier <mathieu.poirier@linaro.org>
      8 */
      9
     10#ifndef INCLUDE__CS_ETM_DECODER_H__
     11#define INCLUDE__CS_ETM_DECODER_H__
     12
     13#include <linux/types.h>
     14#include <stdio.h>
     15
     16struct cs_etm_decoder;
     17struct cs_etm_packet;
     18struct cs_etm_packet_queue;
     19
     20struct cs_etm_queue;
     21
     22typedef u32 (*cs_etm_mem_cb_type)(struct cs_etm_queue *, u8, u64, size_t, u8 *);
     23
     24struct cs_etmv3_trace_params {
     25	u32 reg_ctrl;
     26	u32 reg_trc_id;
     27	u32 reg_ccer;
     28	u32 reg_idr;
     29};
     30
     31struct cs_etmv4_trace_params {
     32	u32 reg_idr0;
     33	u32 reg_idr1;
     34	u32 reg_idr2;
     35	u32 reg_idr8;
     36	u32 reg_configr;
     37	u32 reg_traceidr;
     38};
     39
     40struct cs_ete_trace_params {
     41	u32 reg_idr0;
     42	u32 reg_idr1;
     43	u32 reg_idr2;
     44	u32 reg_idr8;
     45	u32 reg_configr;
     46	u32 reg_traceidr;
     47	u32 reg_devarch;
     48};
     49
     50struct cs_etm_trace_params {
     51	int protocol;
     52	union {
     53		struct cs_etmv3_trace_params etmv3;
     54		struct cs_etmv4_trace_params etmv4;
     55		struct cs_ete_trace_params ete;
     56	};
     57};
     58
     59struct cs_etm_decoder_params {
     60	int operation;
     61	void (*packet_printer)(const char *msg);
     62	cs_etm_mem_cb_type mem_acc_cb;
     63	u8 formatted;
     64	u8 fsyncs;
     65	u8 hsyncs;
     66	u8 frame_aligned;
     67	void *data;
     68};
     69
     70/*
     71 * The following enums are indexed starting with 1 to align with the
     72 * open source coresight trace decoder library.
     73 */
     74enum {
     75	CS_ETM_PROTO_ETMV3 = 1,
     76	CS_ETM_PROTO_ETMV4i,
     77	CS_ETM_PROTO_ETMV4d,
     78	CS_ETM_PROTO_PTM,
     79	CS_ETM_PROTO_ETE
     80};
     81
     82enum cs_etm_decoder_operation {
     83	CS_ETM_OPERATION_PRINT = 1,
     84	CS_ETM_OPERATION_DECODE,
     85	CS_ETM_OPERATION_MAX,
     86};
     87
     88int cs_etm_decoder__process_data_block(struct cs_etm_decoder *decoder,
     89				       u64 indx, const u8 *buf,
     90				       size_t len, size_t *consumed);
     91
     92struct cs_etm_decoder *
     93cs_etm_decoder__new(int num_cpu,
     94		    struct cs_etm_decoder_params *d_params,
     95		    struct cs_etm_trace_params t_params[]);
     96
     97void cs_etm_decoder__free(struct cs_etm_decoder *decoder);
     98
     99int cs_etm_decoder__add_mem_access_cb(struct cs_etm_decoder *decoder,
    100				      u64 start, u64 end,
    101				      cs_etm_mem_cb_type cb_func);
    102
    103int cs_etm_decoder__get_packet(struct cs_etm_packet_queue *packet_queue,
    104			       struct cs_etm_packet *packet);
    105
    106int cs_etm_decoder__reset(struct cs_etm_decoder *decoder);
    107const char *cs_etm_decoder__get_name(struct cs_etm_decoder *decoder);
    108
    109#endif /* INCLUDE__CS_ETM_DECODER_H__ */