/*
 * Copyright (c) 2005 Cisco Systems.  All rights reserved.
 * Roland Dreier <rolandd@cisco.com>
 *
 * This program is free software; you can redistribute  it and/or modify it
 * under  the terms of  the GNU General  Public License as published by the
 * Free Software Foundation;  either version 2 of the  License, or (at your
 * option) any later version.
 */

#ifndef __4XX_PCIE_H
#define __4XX_PCIE_H

#include <asm/ppc4xx.h>
#include <pci.h>

#define DCRN_SDR0_CFGADDR       0x00e
#define DCRN_SDR0_CFGDATA       0x00f

#if defined(CONFIG_440SPE)
#define CONFIG_SYS_PCIE_NR_PORTS        3

#define CONFIG_SYS_PCIE_ADDR_HIGH       0x0000000d

#define DCRN_PCIE0_BASE         0x100
#define DCRN_PCIE1_BASE         0x120
#define DCRN_PCIE2_BASE         0x140

#define PCIE0_SDR               0x300
#define PCIE1_SDR               0x340
#define PCIE2_SDR               0x370
#endif

#if defined(CONFIG_460EX) || defined(CONFIG_460GT)
#define CONFIG_SYS_PCIE_NR_PORTS        2

#define CONFIG_SYS_PCIE_ADDR_HIGH       0x0000000d

#define DCRN_PCIE0_BASE         0x100
#define DCRN_PCIE1_BASE         0x120

#define PCIE0_SDR               0x300
#define PCIE1_SDR               0x340
#endif

#if defined(CONFIG_405EX)
#define CONFIG_SYS_PCIE_NR_PORTS        2

#define CONFIG_SYS_PCIE_ADDR_HIGH       0x00000000

#define DCRN_PCIE0_BASE         0x040
#define DCRN_PCIE1_BASE         0x060

#define PCIE0_SDR               0x400
#define PCIE1_SDR               0x440
#endif

#define PCIE0                   DCRN_PCIE0_BASE
#define PCIE1                   DCRN_PCIE1_BASE
#define PCIE2                   DCRN_PCIE2_BASE

#define DCRN_PEGPL_CFGBAH(base)         (base + 0x00)
#define DCRN_PEGPL_CFGBAL(base)         (base + 0x01)
#define DCRN_PEGPL_CFGMSK(base)         (base + 0x02)
#define DCRN_PEGPL_MSGBAH(base)         (base + 0x03)
#define DCRN_PEGPL_MSGBAL(base)         (base + 0x04)
#define DCRN_PEGPL_MSGMSK(base)         (base + 0x05)
#define DCRN_PEGPL_OMR1BAH(base)        (base + 0x06)
#define DCRN_PEGPL_OMR1BAL(base)        (base + 0x07)
#define DCRN_PEGPL_OMR1MSKH(base)       (base + 0x08)
#define DCRN_PEGPL_OMR1MSKL(base)       (base + 0x09)
#define DCRN_PEGPL_REGBAH(base)         (base + 0x12)
#define DCRN_PEGPL_REGBAL(base)         (base + 0x13)
#define DCRN_PEGPL_REGMSK(base)         (base + 0x14)
#define DCRN_PEGPL_SPECIAL(base)        (base + 0x15)
#define DCRN_PEGPL_CFG(base)            (base + 0x16)

/*
 * System DCRs (SDRs)
 */
#define PESDR0_PLLLCT1          0x03a0
#define PESDR0_PLLLCT2          0x03a1
#define PESDR0_PLLLCT3          0x03a2

/* common regs, at for all 4xx with PCIe core */
#define SDRN_PESDR_UTLSET1(n)           (sdr_base(n) + 0x00)
#define SDRN_PESDR_UTLSET2(n)           (sdr_base(n) + 0x01)
#define SDRN_PESDR_DLPSET(n)            (sdr_base(n) + 0x02)
#define SDRN_PESDR_LOOP(n)              (sdr_base(n) + 0x03)
#define SDRN_PESDR_RCSSET(n)            (sdr_base(n) + 0x04)
#define SDRN_PESDR_RCSSTS(n)            (sdr_base(n) + 0x05)

#if defined(CONFIG_440SPE)
#define SDRN_PESDR_HSSL0SET1(n)         (sdr_base(n) + 0x06)
#define SDRN_PESDR_HSSL0SET2(n)         (sdr_base(n) + 0x07)
#define SDRN_PESDR_HSSL0STS(n)          (sdr_base(n) + 0x08)
#define SDRN_PESDR_HSSL1SET1(n)         (sdr_base(n) + 0x09)
#define SDRN_PESDR_HSSL1SET2(n)         (sdr_base(n) + 0x0a)
#define SDRN_PESDR_HSSL1STS(n)          (sdr_base(n) + 0x0b)
#define SDRN_PESDR_HSSL2SET1(n)         (sdr_base(n) + 0x0c)
#define SDRN_PESDR_HSSL2SET2(n)         (sdr_base(n) + 0x0d)
#define SDRN_PESDR_HSSL2STS(n)          (sdr_base(n) + 0x0e)
#define SDRN_PESDR_HSSL3SET1(n)         (sdr_base(n) + 0x0f)
#define SDRN_PESDR_HSSL3SET2(n)         (sdr_base(n) + 0x10)
#define SDRN_PESDR_HSSL3STS(n)          (sdr_base(n) + 0x11)

#define PESDR0_UTLSET1          0x0300
#define PESDR0_UTLSET2          0x0301
#define PESDR0_DLPSET           0x0302
#define PESDR0_LOOP             0x0303
#define PESDR0_RCSSET           0x0304
#define PESDR0_RCSSTS           0x0305
#define PESDR0_HSSL0SET1        0x0306
#define PESDR0_HSSL0SET2        0x0307
#define PESDR0_HSSL0STS         0x0308
#define PESDR0_HSSL1SET1        0x0309
#define PESDR0_HSSL1SET2        0x030a
#define PESDR0_HSSL1STS         0x030b
#define PESDR0_HSSL2SET1        0x030c
#define PESDR0_HSSL2SET2        0x030d
#define PESDR0_HSSL2STS         0x030e
#define PESDR0_HSSL3SET1        0x030f
#define PESDR0_HSSL3SET2        0x0310
#define PESDR0_HSSL3STS         0x0311
#define PESDR0_HSSL4SET1        0x0312
#define PESDR0_HSSL4SET2        0x0313
#define PESDR0_HSSL4STS         0x0314
#define PESDR0_HSSL5SET1        0x0315
#define PESDR0_HSSL5SET2        0x0316
#define PESDR0_HSSL5STS         0x0317
#define PESDR0_HSSL6SET1        0x0318
#define PESDR0_HSSL6SET2        0x0319
#define PESDR0_HSSL6STS         0x031a
#define PESDR0_HSSL7SET1        0x031b
#define PESDR0_HSSL7SET2        0x031c
#define PESDR0_HSSL7STS         0x031d
#define PESDR0_HSSCTLSET        0x031e
#define PESDR0_LANE_ABCD        0x031f
#define PESDR0_LANE_EFGH        0x0320

#define PESDR1_UTLSET1          0x0340
#define PESDR1_UTLSET2          0x0341
#define PESDR1_DLPSET           0x0342
#define PESDR1_LOOP             0x0343
#define PESDR1_RCSSET           0x0344
#define PESDR1_RCSSTS           0x0345
#define PESDR1_HSSL0SET1        0x0346
#define PESDR1_HSSL0SET2        0x0347
#define PESDR1_HSSL0STS         0x0348
#define PESDR1_HSSL1SET1        0x0349
#define PESDR1_HSSL1SET2        0x034a
#define PESDR1_HSSL1STS         0x034b
#define PESDR1_HSSL2SET1        0x034c
#define PESDR1_HSSL2SET2        0x034d
#define PESDR1_HSSL2STS         0x034e
#define PESDR1_HSSL3SET1        0x034f
#define PESDR1_HSSL3SET2        0x0350
#define PESDR1_HSSL3STS         0x0351
#define PESDR1_HSSCTLSET        0x0352
#define PESDR1_LANE_ABCD        0x0353

#define PESDR2_UTLSET1          0x0370
#define PESDR2_UTLSET2          0x0371
#define PESDR2_DLPSET           0x0372
#define PESDR2_LOOP             0x0373
#define PESDR2_RCSSET           0x0374
#define PESDR2_RCSSTS           0x0375
#define PESDR2_HSSL0SET1        0x0376
#define PESDR2_HSSL0SET2        0x0377
#define PESDR2_HSSL0STS         0x0378
#define PESDR2_HSSL1SET1        0x0379
#define PESDR2_HSSL1SET2        0x037a
#define PESDR2_HSSL1STS         0x037b
#define PESDR2_HSSL2SET1        0x037c
#define PESDR2_HSSL2SET2        0x037d
#define PESDR2_HSSL2STS         0x037e
#define PESDR2_HSSL3SET1        0x037f
#define PESDR2_HSSL3SET2        0x0380
#define PESDR2_HSSL3STS         0x0381
#define PESDR2_HSSCTLSET        0x0382
#define PESDR2_LANE_ABCD        0x0383

#elif defined(CONFIG_405EX)

#define SDRN_PESDR_PHYSET1(n)           (sdr_base(n) + 0x06)
#define SDRN_PESDR_PHYSET2(n)           (sdr_base(n) + 0x07)
#define SDRN_PESDR_BIST(n)              (sdr_base(n) + 0x08)
#define SDRN_PESDR_LPB(n)               (sdr_base(n) + 0x0b)
#define SDRN_PESDR_PHYSTA(n)            (sdr_base(n) + 0x0c)

#define PESDR0_UTLSET1          0x0400
#define PESDR0_UTLSET2          0x0401
#define PESDR0_DLPSET           0x0402
#define PESDR0_LOOP             0x0403
#define PESDR0_RCSSET           0x0404
#define PESDR0_RCSSTS           0x0405
#define PESDR0_PHYSET1          0x0406
#define PESDR0_PHYSET2          0x0407
#define PESDR0_BIST             0x0408
#define PESDR0_LPB              0x040B
#define PESDR0_PHYSTA           0x040C

#define PESDR1_UTLSET1          0x0440
#define PESDR1_UTLSET2          0x0441
#define PESDR1_DLPSET           0x0442
#define PESDR1_LOOP             0x0443
#define PESDR1_RCSSET           0x0444
#define PESDR1_RCSSTS           0x0445
#define PESDR1_PHYSET1          0x0446
#define PESDR1_PHYSET2          0x0447
#define PESDR1_BIST             0x0448
#define PESDR1_LPB              0x044B
#define PESDR1_PHYSTA           0x044C

#elif defined(CONFIG_460EX) || defined(CONFIG_460GT)

#define PESDR0_L0BIST           0x0308  /* PE0 L0 built in self test */
#define PESDR0_L0BISTSTS        0x0309  /* PE0 L0 built in self test status */
#define PESDR0_L0CDRCTL         0x030A  /* PE0 L0 CDR control */
#define PESDR0_L0DRV            0x030B  /* PE0 L0 drive */
#define PESDR0_L0REC            0x030C  /* PE0 L0 receiver */
#define PESDR0_L0LPB            0x030D  /* PE0 L0 loopback */
#define PESDR0_L0CLK            0x030E  /* PE0 L0 clocking */
#define PESDR0_PHY_CTL_RST      0x030F  /* PE0 PHY control reset */
#define PESDR0_RSTSTA           0x0310  /* PE0 reset status */
#define PESDR0_OBS              0x0311  /* PE0 observation register */
#define PESDR0_L0ERRC           0x0320  /* PE0 L0 error counter */

#define PESDR1_L0BIST           0x0348  /* PE1 L0 built in self test */
#define PESDR1_L1BIST           0x0349  /* PE1 L1 built in self test */
#define PESDR1_L2BIST           0x034A  /* PE1 L2 built in self test */
#define PESDR1_L3BIST           0x034B  /* PE1 L3 built in self test */
#define PESDR1_L0BISTSTS        0x034C  /* PE1 L0 built in self test status */
#define PESDR1_L1BISTSTS        0x034D  /* PE1 L1 built in self test status */
#define PESDR1_L2BISTSTS        0x034E  /* PE1 L2 built in self test status */
#define PESDR1_L3BISTSTS        0x034F  /* PE1 L3 built in self test status */
#define PESDR1_L0CDRCTL         0x0350  /* PE1 L0 CDR control */
#define PESDR1_L1CDRCTL         0x0351  /* PE1 L1 CDR control */
#define PESDR1_L2CDRCTL         0x0352  /* PE1 L2 CDR control */
#define PESDR1_L3CDRCTL         0x0353  /* PE1 L3 CDR control */
#define PESDR1_L0DRV            0x0354  /* PE1 L0 drive */
#define PESDR1_L1DRV            0x0355  /* PE1 L1 drive */
#define PESDR1_L2DRV            0x0356  /* PE1 L2 drive */
#define PESDR1_L3DRV            0x0357  /* PE1 L3 drive */
#define PESDR1_L0REC            0x0358  /* PE1 L0 receiver */
#define PESDR1_L1REC            0x0359  /* PE1 L1 receiver */
#define PESDR1_L2REC            0x035A  /* PE1 L2 receiver */
#define PESDR1_L3REC            0x035B  /* PE1 L3 receiver */
#define PESDR1_L0LPB            0x035C  /* PE1 L0 loopback */
#define PESDR1_L1LPB            0x035D  /* PE1 L1 loopback */
#define PESDR1_L2LPB            0x035E  /* PE1 L2 loopback */
#define PESDR1_L3LPB            0x035F  /* PE1 L3 loopback */
#define PESDR1_L0CLK            0x0360  /* PE1 L0 clocking */
#define PESDR1_L1CLK            0x0361  /* PE1 L1 clocking */
#define PESDR1_L2CLK            0x0362  /* PE1 L2 clocking */
#define PESDR1_L3CLK            0x0363  /* PE1 L3 clocking */
#define PESDR1_PHY_CTL_RST      0x0364  /* PE1 PHY control reset */
#define PESDR1_RSTSTA           0x0365  /* PE1 reset status */
#define PESDR1_OBS              0x0366  /* PE1 observation register */
#define PESDR1_L0ERRC           0x0368  /* PE1 L0 error counter */
#define PESDR1_L1ERRC           0x0369  /* PE1 L1 error counter */
#define PESDR1_L2ERRC           0x036A  /* PE1 L2 error counter */
#define PESDR1_L3ERRC           0x036B  /* PE1 L3 error counter */
#define PESDR0_IHS1             0x036C  /* PE interrupt handler interfact setting 1 */
#define PESDR0_IHS2             0x036D  /* PE interrupt handler interfact setting 2 */

#endif

/* SDR Bit Mappings */
#define PESDRx_RCSSET_HLDPLB    0x10000000
#define PESDRx_RCSSET_RSTGU     0x01000000
#define PESDRx_RCSSET_RDY       0x00100000
#define PESDRx_RCSSET_RSTDL     0x00010000
#define PESDRx_RCSSET_RSTPYN    0x00001000

#define PESDRx_RCSSTS_PLBIDL    0x10000000
#define PESDRx_RCSSTS_HRSTRQ    0x01000000
#define PESDRx_RCSSTS_PGRST     0x00100000
#define PESDRx_RCSSTS_VC0ACT    0x00010000
#define PESDRx_RCSSTS_BMEN      0x00000100

/*
 * UTL register offsets
 */
#define PEUTL_PBCTL             0x00
#define PEUTL_PBBSZ             0x20
#define PEUTL_OPDBSZ            0x68
#define PEUTL_IPHBSZ            0x70
#define PEUTL_IPDBSZ            0x78
#define PEUTL_OUTTR             0x90
#define PEUTL_INTR              0x98
#define PEUTL_PCTL              0xa0
#define PEUTL_RCSTA             0xb0
#define PEUTL_RCIRQEN           0xb8

/*
 * Config space register offsets
 */
#define PECFG_BAR0LMPA          0x210
#define PECFG_BAR0HMPA          0x214
#define PECFG_BAR1MPA           0x218
#define PECFG_BAR2LMPA          0x220
#define PECFG_BAR2HMPA          0x224

#define PECFG_PIMEN             0x33c
#define PECFG_PIM0LAL           0x340
#define PECFG_PIM0LAH           0x344
#define PECFG_PIM1LAL           0x348
#define PECFG_PIM1LAH           0x34c
#define PECFG_PIM01SAL          0x350
#define PECFG_PIM01SAH          0x354

#define PECFG_POM0LAL           0x380
#define PECFG_POM0LAH           0x384

#define SDR_READ(offset) ({\
        mtdcr(DCRN_SDR0_CFGADDR, offset); \
        mfdcr(DCRN_SDR0_CFGDATA);})

#define SDR_WRITE(offset, data) ({\
        mtdcr(DCRN_SDR0_CFGADDR, offset); \
        mtdcr(DCRN_SDR0_CFGDATA,data);})

#define GPL_DMER_MASK_DISA      0x02000000

#define U64_TO_U32_LOW(val)     ((u32)((val) & 0x00000000ffffffffULL))
#define U64_TO_U32_HIGH(val)    ((u32)((val) >> 32))

/*
 * Prototypes
 */
int ppc4xx_init_pcie(void);
int ppc4xx_init_pcie_rootport(int port);
int ppc4xx_init_pcie_endport(int port);
void ppc4xx_setup_pcie_rootpoint(struct pci_controller *hose, int port);
int ppc4xx_setup_pcie_endpoint(struct pci_controller *hose, int port);
int pcie_hose_scan(struct pci_controller *hose, int bus);

/*
 * Function to determine root port or endport from env variable.
 */
static inline int is_end_point(int port)
{
        char s[10], *tk;
        char *pcie_mode = getenv("pcie_mode");

        if (pcie_mode == NULL)
                return 0;

        strcpy(s, pcie_mode);
        tk = strtok(s, ":");

        switch (port) {
        case 0:
                if (tk != NULL) {
                        if (!(strcmp(tk, "ep") && strcmp(tk, "EP")))
                                return 1;
                        else
                                return 0;
                }
                else
                        return 0;

        case 1:
                tk = strtok(NULL, ":");
                if (tk != NULL) {
                        if (!(strcmp(tk, "ep") && strcmp(tk, "EP")))
                                return 1;
                        else
                                return 0;
                }
                else
                        return 0;

        case 2:
                tk = strtok(NULL, ":");
                if (tk != NULL)
                        tk = strtok(NULL, ":");
                if (tk != NULL) {
                        if (!(strcmp(tk, "ep") && strcmp(tk, "EP")))
                                return 1;
                        else
                                return 0;
                }
                else
                        return 0;
        }

        return 0;
}

static inline void mdelay(int n)
{
        u32 ms = n;

        while (ms--)
                udelay(1000);
}

#if defined(PCIE0_SDR)
static inline u32 sdr_base(int port)
{
        switch (port) {
        default:        /* to satisfy compiler */
        case 0:
                return PCIE0_SDR;
        case 1:
                return PCIE1_SDR;
#if CONFIG_SYS_PCIE_NR_PORTS > 2
        case 2:
                return PCIE2_SDR;
#endif
        }
}
#endif /* defined(PCIE0_SDR) */

#endif /* __4XX_PCIE_H */