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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cfctrl.h (3493B)

      1/* SPDX-License-Identifier: GPL-2.0-only */
      2/*
      3 * Copyright (C) ST-Ericsson AB 2010
      4 * Author:	Sjur Brendeland
      5 */
      6
      7#ifndef CFCTRL_H_
      8#define CFCTRL_H_
      9#include <net/caif/caif_layer.h>
     10#include <net/caif/cfsrvl.h>
     11
     12/* CAIF Control packet commands */
     13enum cfctrl_cmd {
     14	CFCTRL_CMD_LINK_SETUP = 0,
     15	CFCTRL_CMD_LINK_DESTROY = 1,
     16	CFCTRL_CMD_LINK_ERR = 2,
     17	CFCTRL_CMD_ENUM = 3,
     18	CFCTRL_CMD_SLEEP = 4,
     19	CFCTRL_CMD_WAKE = 5,
     20	CFCTRL_CMD_LINK_RECONF = 6,
     21	CFCTRL_CMD_START_REASON = 7,
     22	CFCTRL_CMD_RADIO_SET = 8,
     23	CFCTRL_CMD_MODEM_SET = 9,
     24	CFCTRL_CMD_MASK = 0xf
     25};
     26
     27/* Channel types */
     28enum cfctrl_srv {
     29	CFCTRL_SRV_DECM = 0,
     30	CFCTRL_SRV_VEI = 1,
     31	CFCTRL_SRV_VIDEO = 2,
     32	CFCTRL_SRV_DBG = 3,
     33	CFCTRL_SRV_DATAGRAM = 4,
     34	CFCTRL_SRV_RFM = 5,
     35	CFCTRL_SRV_UTIL = 6,
     36	CFCTRL_SRV_MASK = 0xf
     37};
     38
     39#define CFCTRL_RSP_BIT 0x20
     40#define CFCTRL_ERR_BIT 0x10
     41
     42struct cfctrl_rsp {
     43	void (*linksetup_rsp)(struct cflayer *layer, u8 linkid,
     44			      enum cfctrl_srv serv, u8 phyid,
     45			      struct cflayer *adapt_layer);
     46	void (*linkdestroy_rsp)(struct cflayer *layer, u8 linkid);
     47	void (*linkerror_ind)(void);
     48	void (*enum_rsp)(void);
     49	void (*sleep_rsp)(void);
     50	void (*wake_rsp)(void);
     51	void (*restart_rsp)(void);
     52	void (*radioset_rsp)(void);
     53	void (*reject_rsp)(struct cflayer *layer, u8 linkid,
     54				struct cflayer *client_layer);
     55};
     56
     57/* Link Setup Parameters for CAIF-Links. */
     58struct cfctrl_link_param {
     59	enum cfctrl_srv linktype;/* (T3,T0) Type of Channel */
     60	u8 priority;		  /* (P4,P0) Priority of the channel */
     61	u8 phyid;		  /* (U2-U0) Physical interface to connect */
     62	u8 endpoint;		  /* (E1,E0) Endpoint for data channels */
     63	u8 chtype;		  /* (H1,H0) Channel-Type, applies to
     64				   *            VEI, DEBUG */
     65	union {
     66		struct {
     67			u8 connid;	/*  (D7,D0) Video LinkId */
     68		} video;
     69
     70		struct {
     71			u32 connid;	/* (N31,Ngit0) Connection ID used
     72					 *  for Datagram */
     73		} datagram;
     74
     75		struct {
     76			u32 connid;	/* Connection ID used for RFM */
     77			char volume[20];	/* Volume to mount for RFM */
     78		} rfm;		/* Configuration for RFM */
     79
     80		struct {
     81			u16 fifosize_kb;	/* Psock FIFO size in KB */
     82			u16 fifosize_bufs;	/* Psock # signal buffers */
     83			char name[16];	/* Name of the PSOCK service */
     84			u8 params[255];	/* Link setup Parameters> */
     85			u16 paramlen;	/* Length of Link Setup
     86						 *   Parameters */
     87		} utility;	/* Configuration for Utility Links (Psock) */
     88	} u;
     89};
     90
     91/* This structure is used internally in CFCTRL */
     92struct cfctrl_request_info {
     93	int sequence_no;
     94	enum cfctrl_cmd cmd;
     95	u8 channel_id;
     96	struct cfctrl_link_param param;
     97	struct cflayer *client_layer;
     98	struct list_head list;
     99};
    100
    101struct cfctrl {
    102	struct cfsrvl serv;
    103	struct cfctrl_rsp res;
    104	atomic_t req_seq_no;
    105	atomic_t rsp_seq_no;
    106	struct list_head list;
    107	/* Protects from simultaneous access to first_req list */
    108	spinlock_t info_list_lock;
    109#ifndef CAIF_NO_LOOP
    110	u8 loop_linkid;
    111	int loop_linkused[256];
    112	/* Protects simultaneous access to loop_linkid and loop_linkused */
    113	spinlock_t loop_linkid_lock;
    114#endif
    115
    116};
    117
    118void cfctrl_enum_req(struct cflayer *cfctrl, u8 physlinkid);
    119int cfctrl_linkup_request(struct cflayer *cfctrl,
    120			   struct cfctrl_link_param *param,
    121			   struct cflayer *user_layer);
    122int  cfctrl_linkdown_req(struct cflayer *cfctrl, u8 linkid,
    123			 struct cflayer *client);
    124
    125struct cflayer *cfctrl_create(void);
    126struct cfctrl_rsp *cfctrl_get_respfuncs(struct cflayer *layer);
    127int cfctrl_cancel_req(struct cflayer *layr, struct cflayer *adap_layer);
    128void cfctrl_remove(struct cflayer *layr);
    129
    130#endif				/* CFCTRL_H_ */