linux-imx

/*

 * Copyright (c) 2016-2018, NVIDIA CORPORATION.  All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify it

 * under the terms and conditions of the GNU General Public License,

 * version 2, as published by the Free Software Foundation.

 *

 * This program is distributed in the hope it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for

 * more details.

 */

​

#include <linux/delay.h>

#include <linux/interrupt.h>

#include <linux/io.h>

#include <linux/mailbox_controller.h>

#include <linux/of.h>

#include <linux/of_device.h>

#include <linux/platform_device.h>

#include <linux/pm.h>

#include <linux/slab.h>

​

#include <dt-bindings/mailbox/tegra186-hsp.h>

​

#include "mailbox.h"

​

#define HSP_INT_IE(x)       (0x100 + ((x) * 4))

#define HSP_INT_IV      0x300

#define HSP_INT_IR      0x304

​

#define HSP_INT_EMPTY_SHIFT 0

#define HSP_INT_EMPTY_MASK  0xff

#define HSP_INT_FULL_SHIFT  8

#define HSP_INT_FULL_MASK   0xff

​

#define HSP_INT_DIMENSIONING    0x380

#define HSP_nSM_SHIFT       0

#define HSP_nSS_SHIFT       4

#define HSP_nAS_SHIFT       8

#define HSP_nDB_SHIFT       12

#define HSP_nSI_SHIFT       16

#define HSP_nINT_MASK       0xf

​

#define HSP_DB_TRIGGER  0x0

#define HSP_DB_ENABLE   0x4

#define HSP_DB_RAW  0x8

#define HSP_DB_PENDING  0xc

​

#define HSP_SM_SHRD_MBOX    0x0

#define HSP_SM_SHRD_MBOX_FULL   BIT(31)

#define HSP_SM_SHRD_MBOX_FULL_INT_IE    0x04

#define HSP_SM_SHRD_MBOX_EMPTY_INT_IE   0x08

​

#define HSP_DB_CCPLEX       1

#define HSP_DB_BPMP     3

#define HSP_DB_MAX      7

​

struct tegra_hsp_channel;

struct tegra_hsp;

​

struct tegra_hsp_channel {

    struct tegra_hsp *hsp;

    struct mbox_chan *chan;

    void __iomem *regs;

};

​

struct tegra_hsp_doorbell {

    struct tegra_hsp_channel channel;

    struct list_head list;

    const char *name;

    unsigned int master;

    unsigned int index;

};

​

struct tegra_hsp_mailbox {

    struct tegra_hsp_channel channel;

    unsigned int index;

    bool producer;

};

​

struct tegra_hsp_db_map {

    const char *name;

    unsigned int master;

    unsigned int index;

};

​

struct tegra_hsp_soc {

    const struct tegra_hsp_db_map *map;

    bool has_per_mb_ie;

};

​