root/drivers/memory/tegra/tegra30.c
// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (C) 2014 NVIDIA CORPORATION.  All rights reserved.
 */

#include <linux/device.h>
#include <linux/of.h>
#include <linux/slab.h>

#include <dt-bindings/memory/tegra30-mc.h>

#include "mc.h"

static const unsigned long tegra30_mc_emem_regs[] = {
        MC_EMEM_ARB_CFG,
        MC_EMEM_ARB_OUTSTANDING_REQ,
        MC_EMEM_ARB_TIMING_RCD,
        MC_EMEM_ARB_TIMING_RP,
        MC_EMEM_ARB_TIMING_RC,
        MC_EMEM_ARB_TIMING_RAS,
        MC_EMEM_ARB_TIMING_FAW,
        MC_EMEM_ARB_TIMING_RRD,
        MC_EMEM_ARB_TIMING_RAP2PRE,
        MC_EMEM_ARB_TIMING_WAP2PRE,
        MC_EMEM_ARB_TIMING_R2R,
        MC_EMEM_ARB_TIMING_W2W,
        MC_EMEM_ARB_TIMING_R2W,
        MC_EMEM_ARB_TIMING_W2R,
        MC_EMEM_ARB_DA_TURNS,
        MC_EMEM_ARB_DA_COVERS,
        MC_EMEM_ARB_MISC0,
        MC_EMEM_ARB_RING1_THROTTLE,
};

static const struct tegra_mc_client tegra30_mc_clients[] = {
        {
                .id = 0x00,
                .name = "ptcr",
                .swgroup = TEGRA_SWGROUP_PTC,
                .regs = {
                        .la = {
                                .reg = 0x34c,
                                .shift = 0,
                                .mask = 0xff,
                                .def = 0x0,
                        },
                },
                .fifo_size = 16 * 2,
        }, {
                .id = 0x01,
                .name = "display0a",
                .swgroup = TEGRA_SWGROUP_DC,
                .regs = {
                        .smmu = {
                                .reg = 0x228,
                                .bit = 1,
                        },
                        .la = {
                                .reg = 0x2e8,
                                .shift = 0,
                                .mask = 0xff,
                                .def = 0x4e,
                        },
                },
                .fifo_size = 16 * 128,
        }, {
                .id = 0x02,
                .name = "display0ab",
                .swgroup = TEGRA_SWGROUP_DCB,
                .regs = {
                        .smmu = {
                                .reg = 0x228,
                                .bit = 2,
                        },
                        .la = {
                                .reg = 0x2f4,
                                .shift = 0,
                                .mask = 0xff,
                                .def = 0x4e,
                        },
                },
                .fifo_size = 16 * 128,
        }, {
                .id = 0x03,
                .name = "display0b",
                .swgroup = TEGRA_SWGROUP_DC,
                .regs = {
                        .smmu = {
                                .reg = 0x228,
                                .bit = 3,
                        },
                        .la = {
                                .reg = 0x2e8,
                                .shift = 16,
                                .mask = 0xff,
                                .def = 0x4e,
                        },
                },
                .fifo_size = 16 * 64,
        }, {
                .id = 0x04,
                .name = "display0bb",
                .swgroup = TEGRA_SWGROUP_DCB,
                .regs = {
                        .smmu = {
                                .reg = 0x228,
                                .bit = 4,
                        },
                        .la = {
                                .reg = 0x2f4,
                                .shift = 16,
                                .mask = 0xff,
                                .def = 0x4e,
                        },
                },
                .fifo_size = 16 * 64,
        }, {
                .id = 0x05,
                .name = "display0c",
                .swgroup = TEGRA_SWGROUP_DC,
                .regs = {
                        .smmu = {
                                .reg = 0x228,
                                .bit = 5,
                        },
                        .la = {
                                .reg = 0x2ec,
                                .shift = 0,
                                .mask = 0xff,
                                .def = 0x4e,
                        },
                },
                .fifo_size = 16 * 128,
        }, {
                .id = 0x06,
                .name = "display0cb",
                .swgroup = TEGRA_SWGROUP_DCB,
                .regs = {
                        .smmu = {
                                .reg = 0x228,
                                .bit = 6,
                        },
                        .la = {
                                .reg = 0x2f8,
                                .shift = 0,
                                .mask = 0xff,
                                .def = 0x4e,
                        },
                },
                .fifo_size = 16 * 128,
        }, {
                .id = 0x07,
                .name = "display1b",
                .swgroup = TEGRA_SWGROUP_DC,
                .regs = {
                        .smmu = {
                                .reg = 0x228,
                                .bit = 7,
                        },
                        .la = {
                                .reg = 0x2ec,
                                .shift = 16,
                                .mask = 0xff,
                                .def = 0x4e,
                        },
                },
                .fifo_size = 16 * 64,
        }, {
                .id = 0x08,
                .name = "display1bb",
                .swgroup = TEGRA_SWGROUP_DCB,
                .regs = {
                        .smmu = {
                                .reg = 0x228,
                                .bit = 8,
                        },
                        .la = {
                                .reg = 0x2f8,
                                .shift = 16,
                                .mask = 0xff,
                                .def = 0x4e,
                        },
                },
                .fifo_size = 16 * 64,
        }, {
                .id = 0x09,
                .name = "eppup",
                .swgroup = TEGRA_SWGROUP_EPP,
                .regs = {
                        .smmu = {
                                .reg = 0x228,
                                .bit = 9,
                        },
                        .la = {
                                .reg = 0x300,
                                .shift = 0,
                                .mask = 0xff,
                                .def = 0x17,
                        },
                },
                .fifo_size = 16 * 8,
        }, {
                .id = 0x0a,
                .name = "g2pr",
                .swgroup = TEGRA_SWGROUP_G2,
                .regs = {
                        .smmu = {
                                .reg = 0x228,
                                .bit = 10,
                        },
                        .la = {
                                .reg = 0x308,
                                .shift = 0,
                                .mask = 0xff,
                                .def = 0x09,
                        },
                },
                .fifo_size = 16 * 64,
        }, {
                .id = 0x0b,
                .name = "g2sr",
                .swgroup = TEGRA_SWGROUP_G2,
                .regs = {
                        .smmu = {
                                .reg = 0x228,
                                .bit = 11,
                        },
                        .la = {
                                .reg = 0x308,
                                .shift = 16,
                                .mask = 0xff,
                                .def = 0x09,
                        },
                },
                .fifo_size = 16 * 64,
        }, {
                .id = 0x0c,
                .name = "mpeunifbr",
                .swgroup = TEGRA_SWGROUP_MPE,
                .regs = {
                        .smmu = {
                                .reg = 0x228,
                                .bit = 12,
                        },
                        .la = {
                                .reg = 0x328,
                                .shift = 0,
                                .mask = 0xff,
                                .def = 0x50,
                        },
                },
                .fifo_size = 16 * 8,
        }, {
                .id = 0x0d,
                .name = "viruv",
                .swgroup = TEGRA_SWGROUP_VI,
                .regs = {
                        .smmu = {
                                .reg = 0x228,
                                .bit = 13,
                        },
                        .la = {
                                .reg = 0x364,
                                .shift = 0,
                                .mask = 0xff,
                                .def = 0x2c,
                        },
                },
                .fifo_size = 16 * 8,
        }, {
                .id = 0x0e,
                .name = "afir",
                .swgroup = TEGRA_SWGROUP_AFI,
                .regs = {
                        .smmu = {
                                .reg = 0x228,
                                .bit = 14,
                        },
                        .la = {
                                .reg = 0x2e0,
                                .shift = 0,
                                .mask = 0xff,
                                .def = 0x10,
                        },
                },
                .fifo_size = 16 * 32,
        }, {
                .id = 0x0f,
                .name = "avpcarm7r",
                .swgroup = TEGRA_SWGROUP_AVPC,
                .regs = {
                        .smmu = {
                                .reg = 0x228,
                                .bit = 15,
                        },
                        .la = {
                                .reg = 0x2e4,
                                .shift = 0,
                                .mask = 0xff,
                                .def = 0x04,
                        },
                },
                .fifo_size = 16 * 2,
        }, {
                .id = 0x10,
                .name = "displayhc",
                .swgroup = TEGRA_SWGROUP_DC,
                .regs = {
                        .smmu = {
                                .reg = 0x228,
                                .bit = 16,
                        },
                        .la = {
                                .reg = 0x2f0,
                                .shift = 0,
                                .mask = 0xff,
                                .def = 0xff,
                        },
                },
                .fifo_size = 16 * 2,
        }, {
                .id = 0x11,
                .name = "displayhcb",
                .swgroup = TEGRA_SWGROUP_DCB,
                .regs = {
                        .smmu = {
                                .reg = 0x228,
                                .bit = 17,
                        },
                        .la = {
                                .reg = 0x2fc,
                                .shift = 0,
                                .mask = 0xff,
                                .def = 0xff,
                        },
                },
                .fifo_size = 16 * 2,
        }, {
                .id = 0x12,
                .name = "fdcdrd",
                .swgroup = TEGRA_SWGROUP_NV,
                .regs = {
                        .smmu = {
                                .reg = 0x228,
                                .bit = 18,
                        },
                        .la = {
                                .reg = 0x334,
                                .shift = 0,
                                .mask = 0xff,
                                .def = 0x0a,
                        },
                },
                .fifo_size = 16 * 48,
        }, {
                .id = 0x13,
                .name = "fdcdrd2",
                .swgroup = TEGRA_SWGROUP_NV2,
                .regs = {
                        .smmu = {
                                .reg = 0x228,
                                .bit = 19,
                        },
                        .la = {
                                .reg = 0x33c,
                                .shift = 0,
                                .mask = 0xff,
                                .def = 0x0a,
                        },
                },
                .fifo_size = 16 * 48,
        }, {
                .id = 0x14,
                .name = "g2dr",
                .swgroup = TEGRA_SWGROUP_G2,
                .regs = {
                        .smmu = {
                                .reg = 0x228,
                                .bit = 20,
                        },
                        .la = {
                                .reg = 0x30c,
                                .shift = 0,
                                .mask = 0xff,
                                .def = 0x0a,
                        },
                },
                .fifo_size = 16 * 48,
        }, {
                .id = 0x15,
                .name = "hdar",
                .swgroup = TEGRA_SWGROUP_HDA,
                .regs = {
                        .smmu = {
                                .reg = 0x228,
                                .bit = 21,
                        },
                        .la = {
                                .reg = 0x318,
                                .shift = 0,
                                .mask = 0xff,
                                .def = 0xff,
                        },
                },
                .fifo_size = 16 * 16,
        }, {
                .id = 0x16,
                .name = "host1xdmar",
                .swgroup = TEGRA_SWGROUP_HC,
                .regs = {
                        .smmu = {
                                .reg = 0x228,
                                .bit = 22,
                        },
                        .la = {
                                .reg = 0x310,
                                .shift = 0,
                                .mask = 0xff,
                                .def = 0x05,
                        },
                },
                .fifo_size = 16 * 16,
        }, {
                .id = 0x17,
                .name = "host1xr",
                .swgroup = TEGRA_SWGROUP_HC,
                .regs = {
                        .smmu = {
                                .reg = 0x228,
                                .bit = 23,
                        },
                        .la = {
                                .reg = 0x310,
                                .shift = 16,
                                .mask = 0xff,
                                .def = 0x50,
                        },
                },
                .fifo_size = 16 * 8,
        }, {
                .id = 0x18,
                .name = "idxsrd",
                .swgroup = TEGRA_SWGROUP_NV,
                .regs = {
                        .smmu = {
                                .reg = 0x228,
                                .bit = 24,
                        },
                        .la = {
                                .reg = 0x334,
                                .shift = 16,
                                .mask = 0xff,
                                .def = 0x13,
                        },
                },
                .fifo_size = 16 * 64,
        }, {
                .id = 0x19,
                .name = "idxsrd2",
                .swgroup = TEGRA_SWGROUP_NV2,
                .regs = {
                        .smmu = {
                                .reg = 0x228,
                                .bit = 25,
                        },
                        .la = {
                                .reg = 0x33c,
                                .shift = 16,
                                .mask = 0xff,
                                .def = 0x13,
                        },
                },
                .fifo_size = 16 * 64,
        }, {
                .id = 0x1a,
                .name = "mpe_ipred",
                .swgroup = TEGRA_SWGROUP_MPE,
                .regs = {
                        .smmu = {
                                .reg = 0x228,
                                .bit = 26,
                        },
                        .la = {
                                .reg = 0x328,
                                .shift = 16,
                                .mask = 0xff,
                                .def = 0x80,
                        },
                },
                .fifo_size = 16 * 2,
        }, {
                .id = 0x1b,
                .name = "mpeamemrd",
                .swgroup = TEGRA_SWGROUP_MPE,
                .regs = {
                        .smmu = {
                                .reg = 0x228,
                                .bit = 27,
                        },
                        .la = {
                                .reg = 0x32c,
                                .shift = 0,
                                .mask = 0xff,
                                .def = 0x42,
                        },
                },
                .fifo_size = 16 * 64,
        }, {
                .id = 0x1c,
                .name = "mpecsrd",
                .swgroup = TEGRA_SWGROUP_MPE,
                .regs = {
                        .smmu = {
                                .reg = 0x228,
                                .bit = 28,
                        },
                        .la = {
                                .reg = 0x32c,
                                .shift = 16,
                                .mask = 0xff,
                                .def = 0xff,
                        },
                },
                .fifo_size = 16 * 8,
        }, {
                .id = 0x1d,
                .name = "ppcsahbdmar",
                .swgroup = TEGRA_SWGROUP_PPCS,
                .regs = {
                        .smmu = {
                                .reg = 0x228,
                                .bit = 29,
                        },
                        .la = {
                                .reg = 0x344,
                                .shift = 0,
                                .mask = 0xff,
                                .def = 0x10,
                        },
                },
                .fifo_size = 16 * 2,
        }, {
                .id = 0x1e,
                .name = "ppcsahbslvr",
                .swgroup = TEGRA_SWGROUP_PPCS,
                .regs = {
                        .smmu = {
                                .reg = 0x228,
                                .bit = 30,
                        },
                        .la = {
                                .reg = 0x344,
                                .shift = 16,
                                .mask = 0xff,
                                .def = 0x12,
                        },
                },
                .fifo_size = 16 * 8,
        }, {
                .id = 0x1f,
                .name = "satar",
                .swgroup = TEGRA_SWGROUP_SATA,
                .regs = {
                        .smmu = {
                                .reg = 0x228,
                                .bit = 31,
                        },
                        .la = {
                                .reg = 0x350,
                                .shift = 0,
                                .mask = 0xff,
                                .def = 0x33,
                        },
                },
                .fifo_size = 16 * 32,
        }, {
                .id = 0x20,
                .name = "texsrd",
                .swgroup = TEGRA_SWGROUP_NV,
                .regs = {
                        .smmu = {
                                .reg = 0x22c,
                                .bit = 0,
                        },
                        .la = {
                                .reg = 0x338,
                                .shift = 0,
                                .mask = 0xff,
                                .def = 0x13,
                        },
                },
                .fifo_size = 16 * 64,
        }, {
                .id = 0x21,
                .name = "texsrd2",
                .swgroup = TEGRA_SWGROUP_NV2,
                .regs = {
                        .smmu = {
                                .reg = 0x22c,
                                .bit = 1,
                        },
                        .la = {
                                .reg = 0x340,
                                .shift = 0,
                                .mask = 0xff,
                                .def = 0x13,
                        },
                },
                .fifo_size = 16 * 64,
        }, {
                .id = 0x22,
                .name = "vdebsevr",
                .swgroup = TEGRA_SWGROUP_VDE,
                .regs = {
                        .smmu = {
                                .reg = 0x22c,
                                .bit = 2,
                        },
                        .la = {
                                .reg = 0x354,
                                .shift = 0,
                                .mask = 0xff,
                                .def = 0xff,
                        },
                },
                .fifo_size = 16 * 8,
        }, {
                .id = 0x23,
                .name = "vdember",
                .swgroup = TEGRA_SWGROUP_VDE,
                .regs = {
                        .smmu = {
                                .reg = 0x22c,
                                .bit = 3,
                        },
                        .la = {
                                .reg = 0x354,
                                .shift = 16,
                                .mask = 0xff,
                                .def = 0xd0,
                        },
                },
                .fifo_size = 16 * 4,
        }, {
                .id = 0x24,
                .name = "vdemcer",
                .swgroup = TEGRA_SWGROUP_VDE,
                .regs = {
                        .smmu = {
                                .reg = 0x22c,
                                .bit = 4,
                        },
                        .la = {
                                .reg = 0x358,
                                .shift = 0,
                                .mask = 0xff,
                                .def = 0x2a,
                        },
                },
                .fifo_size = 16 * 16,
        }, {
                .id = 0x25,
                .name = "vdetper",
                .swgroup = TEGRA_SWGROUP_VDE,
                .regs = {
                        .smmu = {
                                .reg = 0x22c,
                                .bit = 5,
                        },
                        .la = {
                                .reg = 0x358,
                                .shift = 16,
                                .mask = 0xff,
                                .def = 0x74,
                        },
                },
                .fifo_size = 16 * 16,
        }, {
                .id = 0x26,
                .name = "mpcorelpr",
                .swgroup = TEGRA_SWGROUP_MPCORELP,
                .regs = {
                        .la = {
                                .reg = 0x324,
                                .shift = 0,
                                .mask = 0xff,
                                .def = 0x04,
                        },
                },
                .fifo_size = 16 * 14,
        }, {
                .id = 0x27,
                .name = "mpcorer",
                .swgroup = TEGRA_SWGROUP_MPCORE,
                .regs = {
                        .la = {
                                .reg = 0x320,
                                .shift = 0,
                                .mask = 0xff,
                                .def = 0x04,
                        },
                },
                .fifo_size = 16 * 14,
        }, {
                .id = 0x28,
                .name = "eppu",
                .swgroup = TEGRA_SWGROUP_EPP,
                .regs = {
                        .smmu = {
                                .reg = 0x22c,
                                .bit = 8,
                        },
                        .la = {
                                .reg = 0x300,
                                .shift = 16,
                                .mask = 0xff,
                                .def = 0x6c,
                        },
                },
                .fifo_size = 16 * 64,
        }, {
                .id = 0x29,
                .name = "eppv",
                .swgroup = TEGRA_SWGROUP_EPP,
                .regs = {
                        .smmu = {
                                .reg = 0x22c,
                                .bit = 9,
                        },
                        .la = {
                                .reg = 0x304,
                                .shift = 0,
                                .mask = 0xff,
                                .def = 0x6c,
                        },
                },
                .fifo_size = 16 * 64,
        }, {
                .id = 0x2a,
                .name = "eppy",
                .swgroup = TEGRA_SWGROUP_EPP,
                .regs = {
                        .smmu = {
                                .reg = 0x22c,
                                .bit = 10,
                        },
                        .la = {
                                .reg = 0x304,
                                .shift = 16,
                                .mask = 0xff,
                                .def = 0x6c,
                        },
                },
                .fifo_size = 16 * 64,
        }, {
                .id = 0x2b,
                .name = "mpeunifbw",
                .swgroup = TEGRA_SWGROUP_MPE,
                .regs = {
                        .smmu = {
                                .reg = 0x22c,
                                .bit = 11,
                        },
                        .la = {
                                .reg = 0x330,
                                .shift = 0,
                                .mask = 0xff,
                                .def = 0x13,
                        },
                },
                .fifo_size = 16 * 8,
        }, {
                .id = 0x2c,
                .name = "viwsb",
                .swgroup = TEGRA_SWGROUP_VI,
                .regs = {
                        .smmu = {
                                .reg = 0x22c,
                                .bit = 12,
                        },
                        .la = {
                                .reg = 0x364,
                                .shift = 16,
                                .mask = 0xff,
                                .def = 0x12,
                        },
                },
                .fifo_size = 16 * 64,
        }, {
                .id = 0x2d,
                .name = "viwu",
                .swgroup = TEGRA_SWGROUP_VI,
                .regs = {
                        .smmu = {
                                .reg = 0x22c,
                                .bit = 13,
                        },
                        .la = {
                                .reg = 0x368,
                                .shift = 0,
                                .mask = 0xff,
                                .def = 0xb2,
                        },
                },
                .fifo_size = 16 * 64,
        }, {
                .id = 0x2e,
                .name = "viwv",
                .swgroup = TEGRA_SWGROUP_VI,
                .regs = {
                        .smmu = {
                                .reg = 0x22c,
                                .bit = 14,
                        },
                        .la = {
                                .reg = 0x368,
                                .shift = 16,
                                .mask = 0xff,
                                .def = 0xb2,
                        },
                },
                .fifo_size = 16 * 64,
        }, {
                .id = 0x2f,
                .name = "viwy",
                .swgroup = TEGRA_SWGROUP_VI,
                .regs = {
                        .smmu = {
                                .reg = 0x22c,
                                .bit = 15,
                        },
                        .la = {
                                .reg = 0x36c,
                                .shift = 0,
                                .mask = 0xff,
                                .def = 0x12,
                        },
                },
                .fifo_size = 16 * 64,
        }, {
                .id = 0x30,
                .name = "g2dw",
                .swgroup = TEGRA_SWGROUP_G2,
                .regs = {
                        .smmu = {
                                .reg = 0x22c,
                                .bit = 16,
                        },
                        .la = {
                                .reg = 0x30c,
                                .shift = 16,
                                .mask = 0xff,
                                .def = 0x9,
                        },
                },
                .fifo_size = 16 * 128,
        }, {
                .id = 0x31,
                .name = "afiw",
                .swgroup = TEGRA_SWGROUP_AFI,
                .regs = {
                        .smmu = {
                                .reg = 0x22c,
                                .bit = 17,
                        },
                        .la = {
                                .reg = 0x2e0,
                                .shift = 16,
                                .mask = 0xff,
                                .def = 0x0c,
                        },
                },
                .fifo_size = 16 * 32,
        }, {
                .id = 0x32,
                .name = "avpcarm7w",
                .swgroup = TEGRA_SWGROUP_AVPC,
                .regs = {
                        .smmu = {
                                .reg = 0x22c,
                                .bit = 18,
                        },
                        .la = {
                                .reg = 0x2e4,
                                .shift = 16,
                                .mask = 0xff,
                                .def = 0x0e,
                        },
                },
                .fifo_size = 16 * 2,
        }, {
                .id = 0x33,
                .name = "fdcdwr",
                .swgroup = TEGRA_SWGROUP_NV,
                .regs = {
                        .smmu = {
                                .reg = 0x22c,
                                .bit = 19,
                        },
                        .la = {
                                .reg = 0x338,
                                .shift = 16,
                                .mask = 0xff,
                                .def = 0x0a,
                        },
                },
                .fifo_size = 16 * 48,
        }, {
                .id = 0x34,
                .name = "fdcdwr2",
                .swgroup = TEGRA_SWGROUP_NV2,
                .regs = {
                        .smmu = {
                                .reg = 0x22c,
                                .bit = 20,
                        },
                        .la = {
                                .reg = 0x340,
                                .shift = 16,
                                .mask = 0xff,
                                .def = 0x0a,
                        },
                },
                .fifo_size = 16 * 48,
        }, {
                .id = 0x35,
                .name = "hdaw",
                .swgroup = TEGRA_SWGROUP_HDA,
                .regs = {
                        .smmu = {
                                .reg = 0x22c,
                                .bit = 21,
                        },
                        .la = {
                                .reg = 0x318,
                                .shift = 16,
                                .mask = 0xff,
                                .def = 0xff,
                        },
                },
                .fifo_size = 16 * 16,
        }, {
                .id = 0x36,
                .name = "host1xw",
                .swgroup = TEGRA_SWGROUP_HC,
                .regs = {
                        .smmu = {
                                .reg = 0x22c,
                                .bit = 22,
                        },
                        .la = {
                                .reg = 0x314,
                                .shift = 0,
                                .mask = 0xff,
                                .def = 0x10,
                        },
                },
                .fifo_size = 16 * 32,
        }, {
                .id = 0x37,
                .name = "ispw",
                .swgroup = TEGRA_SWGROUP_ISP,
                .regs = {
                        .smmu = {
                                .reg = 0x22c,
                                .bit = 23,
                        },
                        .la = {
                                .reg = 0x31c,
                                .shift = 0,
                                .mask = 0xff,
                                .def = 0xff,
                        },
                },
                .fifo_size = 16 * 64,
        }, {
                .id = 0x38,
                .name = "mpcorelpw",
                .swgroup = TEGRA_SWGROUP_MPCORELP,
                .regs = {
                        .la = {
                                .reg = 0x324,
                                .shift = 16,
                                .mask = 0xff,
                                .def = 0x0e,
                        },
                },
                .fifo_size = 16 * 24,
        }, {
                .id = 0x39,
                .name = "mpcorew",
                .swgroup = TEGRA_SWGROUP_MPCORE,
                .regs = {
                        .la = {
                                .reg = 0x320,
                                .shift = 16,
                                .mask = 0xff,
                                .def = 0x0e,
                        },
                },
                .fifo_size = 16 * 24,
        }, {
                .id = 0x3a,
                .name = "mpecswr",
                .swgroup = TEGRA_SWGROUP_MPE,
                .regs = {
                        .smmu = {
                                .reg = 0x22c,
                                .bit = 26,
                        },
                        .la = {
                                .reg = 0x330,
                                .shift = 16,
                                .mask = 0xff,
                                .def = 0xff,
                        },
                },
                .fifo_size = 16 * 8,
        }, {
                .id = 0x3b,
                .name = "ppcsahbdmaw",
                .swgroup = TEGRA_SWGROUP_PPCS,
                .regs = {
                        .smmu = {
                                .reg = 0x22c,
                                .bit = 27,
                        },
                        .la = {
                                .reg = 0x348,
                                .shift = 0,
                                .mask = 0xff,
                                .def = 0x10,
                        },
                },
                .fifo_size = 16 * 2,
        }, {
                .id = 0x3c,
                .name = "ppcsahbslvw",
                .swgroup = TEGRA_SWGROUP_PPCS,
                .regs = {
                        .smmu = {
                                .reg = 0x22c,
                                .bit = 28,
                        },
                        .la = {
                                .reg = 0x348,
                                .shift = 16,
                                .mask = 0xff,
                                .def = 0x06,
                        },
                },
                .fifo_size = 16 * 4,
        }, {
                .id = 0x3d,
                .name = "sataw",
                .swgroup = TEGRA_SWGROUP_SATA,
                .regs = {
                        .smmu = {
                                .reg = 0x22c,
                                .bit = 29,
                        },
                        .la = {
                                .reg = 0x350,
                                .shift = 16,
                                .mask = 0xff,
                                .def = 0x33,
                        },
                },
                .fifo_size = 16 * 32,
        }, {
                .id = 0x3e,
                .name = "vdebsevw",
                .swgroup = TEGRA_SWGROUP_VDE,
                .regs = {
                        .smmu = {
                                .reg = 0x22c,
                                .bit = 30,
                        },
                        .la = {
                                .reg = 0x35c,
                                .shift = 0,
                                .mask = 0xff,
                                .def = 0xff,
                        },
                },
                .fifo_size = 16 * 4,
        }, {
                .id = 0x3f,
                .name = "vdedbgw",
                .swgroup = TEGRA_SWGROUP_VDE,
                .regs = {
                        .smmu = {
                                .reg = 0x22c,
                                .bit = 31,
                        },
                        .la = {
                                .reg = 0x35c,
                                .shift = 16,
                                .mask = 0xff,
                                .def = 0xff,
                        },
                },
                .fifo_size = 16 * 16,
        }, {
                .id = 0x40,
                .name = "vdembew",
                .swgroup = TEGRA_SWGROUP_VDE,
                .regs = {
                        .smmu = {
                                .reg = 0x230,
                                .bit = 0,
                        },
                        .la = {
                                .reg = 0x360,
                                .shift = 0,
                                .mask = 0xff,
                                .def = 0x42,
                        },
                },
                .fifo_size = 16 * 2,
        }, {
                .id = 0x41,
                .name = "vdetpmw",
                .swgroup = TEGRA_SWGROUP_VDE,
                .regs = {
                        .smmu = {
                                .reg = 0x230,
                                .bit = 1,
                        },
                        .la = {
                                .reg = 0x360,
                                .shift = 16,
                                .mask = 0xff,
                                .def = 0x2a,
                        },
                },
                .fifo_size = 16 * 16,
        },
};

static const struct tegra_smmu_swgroup tegra30_swgroups[] = {
        { .name = "dc",   .swgroup = TEGRA_SWGROUP_DC,   .reg = 0x240 },
        { .name = "dcb",  .swgroup = TEGRA_SWGROUP_DCB,  .reg = 0x244 },
        { .name = "epp",  .swgroup = TEGRA_SWGROUP_EPP,  .reg = 0x248 },
        { .name = "g2",   .swgroup = TEGRA_SWGROUP_G2,   .reg = 0x24c },
        { .name = "mpe",  .swgroup = TEGRA_SWGROUP_MPE,  .reg = 0x264 },
        { .name = "vi",   .swgroup = TEGRA_SWGROUP_VI,   .reg = 0x280 },
        { .name = "afi",  .swgroup = TEGRA_SWGROUP_AFI,  .reg = 0x238 },
        { .name = "avpc", .swgroup = TEGRA_SWGROUP_AVPC, .reg = 0x23c },
        { .name = "nv",   .swgroup = TEGRA_SWGROUP_NV,   .reg = 0x268 },
        { .name = "nv2",  .swgroup = TEGRA_SWGROUP_NV2,  .reg = 0x26c },
        { .name = "hda",  .swgroup = TEGRA_SWGROUP_HDA,  .reg = 0x254 },
        { .name = "hc",   .swgroup = TEGRA_SWGROUP_HC,   .reg = 0x250 },
        { .name = "ppcs", .swgroup = TEGRA_SWGROUP_PPCS, .reg = 0x270 },
        { .name = "sata", .swgroup = TEGRA_SWGROUP_SATA, .reg = 0x278 },
        { .name = "vde",  .swgroup = TEGRA_SWGROUP_VDE,  .reg = 0x27c },
        { .name = "isp",  .swgroup = TEGRA_SWGROUP_ISP,  .reg = 0x258 },
};

static const unsigned int tegra30_group_drm[] = {
        TEGRA_SWGROUP_DC,
        TEGRA_SWGROUP_DCB,
        TEGRA_SWGROUP_G2,
        TEGRA_SWGROUP_NV,
        TEGRA_SWGROUP_NV2,
};

static const struct tegra_smmu_group_soc tegra30_groups[] = {
        {
                .name = "drm",
                .swgroups = tegra30_group_drm,
                .num_swgroups = ARRAY_SIZE(tegra30_group_drm),
        },
};

static const struct tegra_smmu_soc tegra30_smmu_soc = {
        .clients = tegra30_mc_clients,
        .num_clients = ARRAY_SIZE(tegra30_mc_clients),
        .swgroups = tegra30_swgroups,
        .num_swgroups = ARRAY_SIZE(tegra30_swgroups),
        .groups = tegra30_groups,
        .num_groups = ARRAY_SIZE(tegra30_groups),
        .supports_round_robin_arbitration = false,
        .supports_request_limit = false,
        .num_tlb_lines = 16,
        .num_asids = 4,
};

#define TEGRA30_MC_RESET(_name, _control, _status, _bit)        \
        {                                                       \
                .name = #_name,                                 \
                .id = TEGRA30_MC_RESET_##_name,                 \
                .control = _control,                            \
                .status = _status,                              \
                .bit = _bit,                                    \
        }

static const struct tegra_mc_reset tegra30_mc_resets[] = {
        TEGRA30_MC_RESET(AFI,      0x200, 0x204,  0),
        TEGRA30_MC_RESET(AVPC,     0x200, 0x204,  1),
        TEGRA30_MC_RESET(DC,       0x200, 0x204,  2),
        TEGRA30_MC_RESET(DCB,      0x200, 0x204,  3),
        TEGRA30_MC_RESET(EPP,      0x200, 0x204,  4),
        TEGRA30_MC_RESET(2D,       0x200, 0x204,  5),
        TEGRA30_MC_RESET(HC,       0x200, 0x204,  6),
        TEGRA30_MC_RESET(HDA,      0x200, 0x204,  7),
        TEGRA30_MC_RESET(ISP,      0x200, 0x204,  8),
        TEGRA30_MC_RESET(MPCORE,   0x200, 0x204,  9),
        TEGRA30_MC_RESET(MPCORELP, 0x200, 0x204, 10),
        TEGRA30_MC_RESET(MPE,      0x200, 0x204, 11),
        TEGRA30_MC_RESET(3D,       0x200, 0x204, 12),
        TEGRA30_MC_RESET(3D2,      0x200, 0x204, 13),
        TEGRA30_MC_RESET(PPCS,     0x200, 0x204, 14),
        TEGRA30_MC_RESET(SATA,     0x200, 0x204, 15),
        TEGRA30_MC_RESET(VDE,      0x200, 0x204, 16),
        TEGRA30_MC_RESET(VI,       0x200, 0x204, 17),
};

static void tegra30_mc_tune_client_latency(struct tegra_mc *mc,
                                           const struct tegra_mc_client *client,
                                           unsigned int bandwidth_mbytes_sec)
{
        u32 arb_tolerance_compensation_nsec, arb_tolerance_compensation_div;
        unsigned int fifo_size = client->fifo_size;
        u32 arb_nsec, la_ticks, value;

        /* see 18.4.1 Client Configuration in Tegra3 TRM v03p */
        if (bandwidth_mbytes_sec)
                arb_nsec = fifo_size * NSEC_PER_USEC / bandwidth_mbytes_sec;
        else
                arb_nsec = U32_MAX;

        /*
         * Latency allowness should be set with consideration for the module's
         * latency tolerance and internal buffering capabilities.
         *
         * Display memory clients use isochronous transfers and have very low
         * tolerance to a belated transfers. Hence we need to compensate the
         * memory arbitration imperfection for them in order to prevent FIFO
         * underflow condition when memory bus is busy.
         *
         * VI clients also need a stronger compensation.
         */
        switch (client->swgroup) {
        case TEGRA_SWGROUP_MPCORE:
        case TEGRA_SWGROUP_PTC:
                /*
                 * We always want lower latency for these clients, hence
                 * don't touch them.
                 */
                return;

        case TEGRA_SWGROUP_DC:
        case TEGRA_SWGROUP_DCB:
                arb_tolerance_compensation_nsec = 1050;
                arb_tolerance_compensation_div = 2;
                break;

        case TEGRA_SWGROUP_VI:
                arb_tolerance_compensation_nsec = 1050;
                arb_tolerance_compensation_div = 1;
                break;

        default:
                arb_tolerance_compensation_nsec = 150;
                arb_tolerance_compensation_div = 1;
                break;
        }

        if (arb_nsec > arb_tolerance_compensation_nsec)
                arb_nsec -= arb_tolerance_compensation_nsec;
        else
                arb_nsec = 0;

        arb_nsec /= arb_tolerance_compensation_div;

        /*
         * Latency allowance is a number of ticks a request from a particular
         * client may wait in the EMEM arbiter before it becomes a high-priority
         * request.
         */
        la_ticks = arb_nsec / mc->tick;
        la_ticks = min(la_ticks, client->regs.la.mask);

        value = mc_readl(mc, client->regs.la.reg);
        value &= ~(client->regs.la.mask << client->regs.la.shift);
        value |= la_ticks << client->regs.la.shift;
        mc_writel(mc, value, client->regs.la.reg);
}

static int tegra30_mc_icc_set(struct icc_node *src, struct icc_node *dst)
{
        struct tegra_mc *mc = icc_provider_to_tegra_mc(src->provider);
        const struct tegra_mc_client *client = &mc->soc->clients[src->id];
        u64 peak_bandwidth = icc_units_to_bps(src->peak_bw);

        /*
         * Skip pre-initialization that is done by icc_node_add(), which sets
         * bandwidth to maximum for all clients before drivers are loaded.
         *
         * This doesn't make sense for us because we don't have drivers for all
         * clients and it's okay to keep configuration left from bootloader
         * during boot, at least for today.
         */
        if (src == dst)
                return 0;

        /* convert bytes/sec to megabytes/sec */
        do_div(peak_bandwidth, 1000000);

        tegra30_mc_tune_client_latency(mc, client, peak_bandwidth);

        return 0;
}

static int tegra30_mc_icc_aggreate(struct icc_node *node, u32 tag, u32 avg_bw,
                                   u32 peak_bw, u32 *agg_avg, u32 *agg_peak)
{
        /*
         * ISO clients need to reserve extra bandwidth up-front because
         * there could be high bandwidth pressure during initial filling
         * of the client's FIFO buffers.  Secondly, we need to take into
         * account impurities of the memory subsystem.
         */
        if (tag & TEGRA_MC_ICC_TAG_ISO)
                peak_bw = tegra_mc_scale_percents(peak_bw, 400);

        *agg_avg += avg_bw;
        *agg_peak = max(*agg_peak, peak_bw);

        return 0;
}

static struct icc_node_data *
tegra30_mc_of_icc_xlate_extended(const struct of_phandle_args *spec, void *data)
{
        struct tegra_mc *mc = icc_provider_to_tegra_mc(data);
        const struct tegra_mc_client *client;
        unsigned int i, idx = spec->args[0];
        struct icc_node_data *ndata;
        struct icc_node *node;

        list_for_each_entry(node, &mc->provider.nodes, node_list) {
                if (node->id != idx)
                        continue;

                ndata = kzalloc_obj(*ndata);
                if (!ndata)
                        return ERR_PTR(-ENOMEM);

                client = &mc->soc->clients[idx];
                ndata->node = node;

                switch (client->swgroup) {
                case TEGRA_SWGROUP_DC:
                case TEGRA_SWGROUP_DCB:
                case TEGRA_SWGROUP_PTC:
                case TEGRA_SWGROUP_VI:
                        /* these clients are isochronous by default */
                        ndata->tag = TEGRA_MC_ICC_TAG_ISO;
                        break;

                default:
                        ndata->tag = TEGRA_MC_ICC_TAG_DEFAULT;
                        break;
                }

                return ndata;
        }

        for (i = 0; i < mc->soc->num_clients; i++) {
                if (mc->soc->clients[i].id == idx)
                        return ERR_PTR(-EPROBE_DEFER);
        }

        dev_err(mc->dev, "invalid ICC client ID %u\n", idx);

        return ERR_PTR(-EINVAL);
}

static const struct tegra_mc_icc_ops tegra30_mc_icc_ops = {
        .xlate_extended = tegra30_mc_of_icc_xlate_extended,
        .aggregate = tegra30_mc_icc_aggreate,
        .set = tegra30_mc_icc_set,
};

const struct tegra_mc_soc tegra30_mc_soc = {
        .clients = tegra30_mc_clients,
        .num_clients = ARRAY_SIZE(tegra30_mc_clients),
        .num_address_bits = 32,
        .atom_size = 16,
        .client_id_mask = 0x7f,
        .smmu = &tegra30_smmu_soc,
        .emem_regs = tegra30_mc_emem_regs,
        .num_emem_regs = ARRAY_SIZE(tegra30_mc_emem_regs),
        .intmask = MC_INT_INVALID_SMMU_PAGE | MC_INT_SECURITY_VIOLATION |
                   MC_INT_DECERR_EMEM,
        .reset_ops = &tegra_mc_reset_ops_common,
        .resets = tegra30_mc_resets,
        .num_resets = ARRAY_SIZE(tegra30_mc_resets),
        .icc_ops = &tegra30_mc_icc_ops,
        .ops = &tegra30_mc_ops,
};