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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octeon_mailbox.h (3128B)

      1/**********************************************************************
      2 * Author: Cavium, Inc.
      3 *
      4 * Contact: support@cavium.com
      5 *          Please include "LiquidIO" in the subject.
      6 *
      7 * Copyright (c) 2003-2016 Cavium, Inc.
      8 *
      9 * This file is free software; you can redistribute it and/or modify
     10 * it under the terms of the GNU General Public License, Version 2, as
     11 * published by the Free Software Foundation.
     12 *
     13 * This file is distributed in the hope that it will be useful, but
     14 * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
     15 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
     16 * NONINFRINGEMENT.  See the GNU General Public License for more details.
     17 ***********************************************************************/
     18#ifndef __MAILBOX_H__
     19#define __MAILBOX_H__
     20
     21/* Macros for Mail Box Communication */
     22
     23#define OCTEON_MBOX_DATA_MAX		32
     24
     25#define OCTEON_VF_ACTIVE		0x1
     26#define OCTEON_VF_FLR_REQUEST		0x2
     27#define OCTEON_PF_CHANGED_VF_MACADDR	0x4
     28#define OCTEON_GET_VF_STATS		0x8
     29
     30/*Macro for Read acknowldgement*/
     31#define OCTEON_PFVFACK			0xffffffffffffffffULL
     32#define OCTEON_PFVFSIG			0x1122334455667788ULL
     33#define OCTEON_PFVFERR			0xDEADDEADDEADDEADULL
     34
     35#define LIO_MBOX_WRITE_WAIT_CNT         1000
     36#define LIO_MBOX_WRITE_WAIT_TIME        msecs_to_jiffies(1)
     37
     38enum octeon_mbox_cmd_status {
     39	OCTEON_MBOX_STATUS_SUCCESS = 0,
     40	OCTEON_MBOX_STATUS_FAILED = 1,
     41	OCTEON_MBOX_STATUS_BUSY = 2
     42};
     43
     44enum octeon_mbox_message_type {
     45	OCTEON_MBOX_REQUEST = 0,
     46	OCTEON_MBOX_RESPONSE = 1
     47};
     48
     49union octeon_mbox_message {
     50	u64 u64;
     51	struct {
     52		u16 type : 1;
     53		u16 resp_needed : 1;
     54		u16 cmd : 6;
     55		u16 len : 8;
     56		u8 params[6];
     57	} s;
     58};
     59
     60typedef void (*octeon_mbox_callback_t)(void *, void *, void *);
     61
     62struct octeon_mbox_cmd {
     63	union octeon_mbox_message msg;
     64	u64 data[OCTEON_MBOX_DATA_MAX];
     65	u32 q_no;
     66	u32 recv_len;
     67	u32 recv_status;
     68	octeon_mbox_callback_t fn;
     69	void *fn_arg;
     70};
     71
     72enum octeon_mbox_state {
     73	OCTEON_MBOX_STATE_IDLE = 1,
     74	OCTEON_MBOX_STATE_REQUEST_RECEIVING = 2,
     75	OCTEON_MBOX_STATE_REQUEST_RECEIVED = 4,
     76	OCTEON_MBOX_STATE_RESPONSE_PENDING = 8,
     77	OCTEON_MBOX_STATE_RESPONSE_RECEIVING = 16,
     78	OCTEON_MBOX_STATE_RESPONSE_RECEIVED = 32,
     79	OCTEON_MBOX_STATE_ERROR = 64
     80};
     81
     82struct octeon_mbox {
     83	/** A spinlock to protect access to this q_mbox. */
     84	spinlock_t lock;
     85
     86	struct octeon_device *oct_dev;
     87
     88	u32 q_no;
     89
     90	enum octeon_mbox_state state;
     91
     92	struct cavium_wk mbox_poll_wk;
     93
     94	/** SLI_MAC_PF_MBOX_INT for PF, SLI_PKT_MBOX_INT for VF. */
     95	void *mbox_int_reg;
     96
     97	/** SLI_PKT_PF_VF_MBOX_SIG(0) for PF, SLI_PKT_PF_VF_MBOX_SIG(1) for VF.
     98	 */
     99	void *mbox_write_reg;
    100
    101	/** SLI_PKT_PF_VF_MBOX_SIG(1) for PF, SLI_PKT_PF_VF_MBOX_SIG(0) for VF.
    102	 */
    103	void *mbox_read_reg;
    104
    105	struct octeon_mbox_cmd mbox_req;
    106
    107	struct octeon_mbox_cmd mbox_resp;
    108
    109};
    110
    111struct oct_vf_stats_ctx {
    112	atomic_t status;
    113	struct oct_vf_stats *stats;
    114};
    115
    116int octeon_mbox_read(struct octeon_mbox *mbox);
    117int octeon_mbox_write(struct octeon_device *oct,
    118		      struct octeon_mbox_cmd *mbox_cmd);
    119int octeon_mbox_process_message(struct octeon_mbox *mbox);
    120int octeon_mbox_cancel(struct octeon_device *oct, int q_no);
    121
    122#endif