linux/drivers/pci/controller/pcie-rcar.h
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   1/* SPDX-License-Identifier: GPL-2.0 */
   2/*
   3 * PCIe driver for Renesas R-Car SoCs
   4 *  Copyright (C) 2014-2020 Renesas Electronics Europe Ltd
   5 *
   6 * Author: Phil Edworthy <phil.edworthy@renesas.com>
   7 */
   8
   9#ifndef _PCIE_RCAR_H
  10#define _PCIE_RCAR_H
  11
  12#define PCIECAR                 0x000010
  13#define PCIECCTLR               0x000018
  14#define  CONFIG_SEND_ENABLE     BIT(31)
  15#define  TYPE0                  (0 << 8)
  16#define  TYPE1                  BIT(8)
  17#define PCIECDR                 0x000020
  18#define PCIEMSR                 0x000028
  19#define PCIEINTXR               0x000400
  20#define  ASTINTX                BIT(16)
  21#define PCIEPHYSR               0x0007f0
  22#define  PHYRDY                 BIT(0)
  23#define PCIEMSITXR              0x000840
  24
  25/* Transfer control */
  26#define PCIETCTLR               0x02000
  27#define  DL_DOWN                BIT(3)
  28#define  CFINIT                 BIT(0)
  29#define PCIETSTR                0x02004
  30#define  DATA_LINK_ACTIVE       BIT(0)
  31#define PCIEERRFR               0x02020
  32#define  UNSUPPORTED_REQUEST    BIT(4)
  33#define PCIEMSIFR               0x02044
  34#define PCIEMSIALR              0x02048
  35#define  MSIFE                  BIT(0)
  36#define PCIEMSIAUR              0x0204c
  37#define PCIEMSIIER              0x02050
  38
  39/* root port address */
  40#define PCIEPRAR(x)             (0x02080 + ((x) * 0x4))
  41
  42/* local address reg & mask */
  43#define PCIELAR(x)              (0x02200 + ((x) * 0x20))
  44#define PCIELAMR(x)             (0x02208 + ((x) * 0x20))
  45#define  LAM_PREFETCH           BIT(3)
  46#define  LAM_64BIT              BIT(2)
  47#define  LAR_ENABLE             BIT(1)
  48
  49/* PCIe address reg & mask */
  50#define PCIEPALR(x)             (0x03400 + ((x) * 0x20))
  51#define PCIEPAUR(x)             (0x03404 + ((x) * 0x20))
  52#define PCIEPAMR(x)             (0x03408 + ((x) * 0x20))
  53#define PCIEPTCTLR(x)           (0x0340c + ((x) * 0x20))
  54#define  PAR_ENABLE             BIT(31)
  55#define  IO_SPACE               BIT(8)
  56
  57/* Configuration */
  58#define PCICONF(x)              (0x010000 + ((x) * 0x4))
  59#define  INTDIS                 BIT(10)
  60#define PMCAP(x)                (0x010040 + ((x) * 0x4))
  61#define MSICAP(x)               (0x010050 + ((x) * 0x4))
  62#define  MSICAP0_MSIE           BIT(16)
  63#define  MSICAP0_MMESCAP_OFFSET 17
  64#define  MSICAP0_MMESE_OFFSET   20
  65#define  MSICAP0_MMESE_MASK     GENMASK(22, 20)
  66#define EXPCAP(x)               (0x010070 + ((x) * 0x4))
  67#define VCCAP(x)                (0x010100 + ((x) * 0x4))
  68
  69/* link layer */
  70#define IDSETR0                 0x011000
  71#define IDSETR1                 0x011004
  72#define SUBIDSETR               0x011024
  73#define TLCTLR                  0x011048
  74#define MACSR                   0x011054
  75#define  SPCHGFIN               BIT(4)
  76#define  SPCHGFAIL              BIT(6)
  77#define  SPCHGSUC               BIT(7)
  78#define  LINK_SPEED             (0xf << 16)
  79#define  LINK_SPEED_2_5GTS      (1 << 16)
  80#define  LINK_SPEED_5_0GTS      (2 << 16)
  81#define MACCTLR                 0x011058
  82#define  MACCTLR_NFTS_MASK      GENMASK(23, 16) /* The name is from SH7786 */
  83#define  SPEED_CHANGE           BIT(24)
  84#define  SCRAMBLE_DISABLE       BIT(27)
  85#define  LTSMDIS                BIT(31)
  86#define  MACCTLR_INIT_VAL       (LTSMDIS | MACCTLR_NFTS_MASK)
  87#define PMSR                    0x01105c
  88#define MACS2R                  0x011078
  89#define MACCGSPSETR             0x011084
  90#define  SPCNGRSN               BIT(31)
  91
  92/* R-Car H1 PHY */
  93#define H1_PCIEPHYADRR          0x04000c
  94#define  WRITE_CMD              BIT(16)
  95#define  PHY_ACK                BIT(24)
  96#define  RATE_POS               12
  97#define  LANE_POS               8
  98#define  ADR_POS                0
  99#define H1_PCIEPHYDOUTR         0x040014
 100
 101/* R-Car Gen2 PHY */
 102#define GEN2_PCIEPHYADDR        0x780
 103#define GEN2_PCIEPHYDATA        0x784
 104#define GEN2_PCIEPHYCTRL        0x78c
 105
 106#define INT_PCI_MSI_NR          32
 107
 108#define RCONF(x)                (PCICONF(0) + (x))
 109#define RPMCAP(x)               (PMCAP(0) + (x))
 110#define REXPCAP(x)              (EXPCAP(0) + (x))
 111#define RVCCAP(x)               (VCCAP(0) + (x))
 112
 113#define PCIE_CONF_BUS(b)        (((b) & 0xff) << 24)
 114#define PCIE_CONF_DEV(d)        (((d) & 0x1f) << 19)
 115#define PCIE_CONF_FUNC(f)       (((f) & 0x7) << 16)
 116
 117#define RCAR_PCI_MAX_RESOURCES  4
 118#define MAX_NR_INBOUND_MAPS     6
 119
 120struct rcar_pcie {
 121        struct device           *dev;
 122        void __iomem            *base;
 123};
 124
 125enum {
 126        RCAR_PCI_ACCESS_READ,
 127        RCAR_PCI_ACCESS_WRITE,
 128};
 129
 130void rcar_pci_write_reg(struct rcar_pcie *pcie, u32 val, unsigned int reg);
 131u32 rcar_pci_read_reg(struct rcar_pcie *pcie, unsigned int reg);
 132void rcar_rmw32(struct rcar_pcie *pcie, int where, u32 mask, u32 data);
 133int rcar_pcie_wait_for_phyrdy(struct rcar_pcie *pcie);
 134int rcar_pcie_wait_for_dl(struct rcar_pcie *pcie);
 135void rcar_pcie_set_outbound(struct rcar_pcie *pcie, int win,
 136                            struct resource_entry *window);
 137void rcar_pcie_set_inbound(struct rcar_pcie *pcie, u64 cpu_addr,
 138                           u64 pci_addr, u64 flags, int idx, bool host);
 139
 140#endif
 141