x86/unwinder: Handle stack overflows more gracefully

[linux/fpc-iii.git] / drivers / rapidio / devices / tsi721.h

/*
 * Tsi721 PCIExpress-to-SRIO bridge definitions
 *
 * Copyright 2011, Integrated Device Technology, Inc.
 *
 * 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.
 *
 * This program is distributed in the hope that 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.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc., 59
 * Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

#ifndef __TSI721_H
#define __TSI721_H

/* Debug output filtering masks */
enum {
        DBG_NONE        = 0,
        DBG_INIT        = BIT(0), /* driver init */
        DBG_EXIT        = BIT(1), /* driver exit */
        DBG_MPORT       = BIT(2), /* mport add/remove */
        DBG_MAINT       = BIT(3), /* maintenance ops messages */
        DBG_DMA         = BIT(4), /* DMA transfer messages */
        DBG_DMAV        = BIT(5), /* verbose DMA transfer messages */
        DBG_IBW         = BIT(6), /* inbound window */
        DBG_EVENT       = BIT(7), /* event handling messages */
        DBG_OBW         = BIT(8), /* outbound window messages */
        DBG_DBELL       = BIT(9), /* doorbell messages */
        DBG_OMSG        = BIT(10), /* doorbell messages */
        DBG_IMSG        = BIT(11), /* doorbell messages */
        DBG_ALL         = ~0,
};

#ifdef DEBUG
extern u32 tsi_dbg_level;

#define tsi_debug(level, dev, fmt, arg...)                              \
        do {                                                            \
                if (DBG_##level & tsi_dbg_level)                                \
                        dev_dbg(dev, "%s: " fmt "\n", __func__, ##arg); \
        } while (0)
#else
#define tsi_debug(level, dev, fmt, arg...) \
                no_printk(KERN_DEBUG "%s: " fmt "\n", __func__, ##arg)
#endif

#define tsi_info(dev, fmt, arg...) \
        dev_info(dev, "%s: " fmt "\n", __func__, ##arg)

#define tsi_warn(dev, fmt, arg...) \
        dev_warn(dev, "%s: WARNING " fmt "\n", __func__, ##arg)

#define tsi_err(dev, fmt, arg...) \
        dev_err(dev, "%s: ERROR " fmt "\n", __func__, ##arg)

#define DRV_NAME        "tsi721"

#define DEFAULT_HOPCOUNT        0xff
#define DEFAULT_DESTID          0xff

/* PCI device ID */
#define PCI_DEVICE_ID_TSI721            0x80ab

#define BAR_0   0
#define BAR_1   1
#define BAR_2   2
#define BAR_4   4

#define TSI721_PC2SR_BARS       2
#define TSI721_PC2SR_WINS       8
#define TSI721_PC2SR_ZONES      8
#define TSI721_MAINT_WIN        0 /* Window for outbound maintenance requests */
#define IDB_QUEUE               0 /* Inbound Doorbell Queue to use */
#define IDB_QSIZE               512 /* Inbound Doorbell Queue size */

/* Memory space sizes */
#define TSI721_REG_SPACE_SIZE           (512 * 1024) /* 512K */
#define TSI721_DB_WIN_SIZE              (16 * 1024 * 1024) /* 16MB */

#define  RIO_TT_CODE_8          0x00000000
#define  RIO_TT_CODE_16         0x00000001

#define TSI721_DMA_MAXCH        8
#define TSI721_DMA_MINSTSSZ     32
#define TSI721_DMA_STSBLKSZ     8

#define TSI721_SRIO_MAXCH       8

#define DBELL_SID(buf)          (((u8)buf[2] << 8) | (u8)buf[3])
#define DBELL_TID(buf)          (((u8)buf[4] << 8) | (u8)buf[5])
#define DBELL_INF(buf)          (((u8)buf[0] << 8) | (u8)buf[1])

#define TSI721_RIO_PW_MSG_SIZE  16  /* Tsi721 saves only 16 bytes of PW msg */

/* Register definitions */

/*
 * Registers in PCIe configuration space
 */

#define TSI721_PCIECFG_MSIXTBL  0x0a4
#define TSI721_MSIXTBL_OFFSET   0x2c000
#define TSI721_PCIECFG_MSIXPBA  0x0a8
#define TSI721_MSIXPBA_OFFSET   0x2a000
#define TSI721_PCIECFG_EPCTL    0x400

/*
 * Event Management Registers
 */

#define TSI721_RIO_EM_INT_STAT          0x10910
#define TSI721_RIO_EM_INT_STAT_PW_RX    0x00010000

#define TSI721_RIO_EM_INT_ENABLE        0x10914
#define TSI721_RIO_EM_INT_ENABLE_PW_RX  0x00010000

#define TSI721_RIO_EM_DEV_INT_EN        0x10930
#define TSI721_RIO_EM_DEV_INT_EN_INT    0x00000001

/*
 * Port-Write Block Registers
 */

#define TSI721_RIO_PW_CTL               0x10a04
#define TSI721_RIO_PW_CTL_PW_TIMER      0xf0000000
#define TSI721_RIO_PW_CTL_PWT_DIS       (0 << 28)
#define TSI721_RIO_PW_CTL_PWT_103       (1 << 28)
#define TSI721_RIO_PW_CTL_PWT_205       (1 << 29)
#define TSI721_RIO_PW_CTL_PWT_410       (1 << 30)
#define TSI721_RIO_PW_CTL_PWT_820       (1 << 31)
#define TSI721_RIO_PW_CTL_PWC_MODE      0x01000000
#define TSI721_RIO_PW_CTL_PWC_CONT      0x00000000
#define TSI721_RIO_PW_CTL_PWC_REL       0x01000000

#define TSI721_RIO_PW_RX_STAT           0x10a10
#define TSI721_RIO_PW_RX_STAT_WR_SIZE   0x0000f000
#define TSI_RIO_PW_RX_STAT_WDPTR        0x00000100
#define TSI721_RIO_PW_RX_STAT_PW_SHORT  0x00000008
#define TSI721_RIO_PW_RX_STAT_PW_TRUNC  0x00000004
#define TSI721_RIO_PW_RX_STAT_PW_DISC   0x00000002
#define TSI721_RIO_PW_RX_STAT_PW_VAL    0x00000001

#define TSI721_RIO_PW_RX_CAPT(x)        (0x10a20 + (x)*4)

/*
 * Inbound Doorbells
 */

#define TSI721_IDB_ENTRY_SIZE   64

#define TSI721_IDQ_CTL(x)       (0x20000 + (x) * 0x1000)
#define TSI721_IDQ_SUSPEND      0x00000002
#define TSI721_IDQ_INIT         0x00000001

#define TSI721_IDQ_STS(x)       (0x20004 + (x) * 0x1000)
#define TSI721_IDQ_RUN          0x00200000

#define TSI721_IDQ_MASK(x)      (0x20008 + (x) * 0x1000)
#define TSI721_IDQ_MASK_MASK    0xffff0000
#define TSI721_IDQ_MASK_PATT    0x0000ffff

#define TSI721_IDQ_RP(x)        (0x2000c + (x) * 0x1000)
#define TSI721_IDQ_RP_PTR       0x0007ffff

#define TSI721_IDQ_WP(x)        (0x20010 + (x) * 0x1000)
#define TSI721_IDQ_WP_PTR       0x0007ffff

#define TSI721_IDQ_BASEL(x)     (0x20014 + (x) * 0x1000)
#define TSI721_IDQ_BASEL_ADDR   0xffffffc0
#define TSI721_IDQ_BASEU(x)     (0x20018 + (x) * 0x1000)
#define TSI721_IDQ_SIZE(x)      (0x2001c + (x) * 0x1000)
#define TSI721_IDQ_SIZE_VAL(size)       (__fls(size) - 4)
#define TSI721_IDQ_SIZE_MIN     512
#define TSI721_IDQ_SIZE_MAX     (512 * 1024)

#define TSI721_SR_CHINT(x)      (0x20040 + (x) * 0x1000)
#define TSI721_SR_CHINTE(x)     (0x20044 + (x) * 0x1000)
#define TSI721_SR_CHINTSET(x)   (0x20048 + (x) * 0x1000)
#define TSI721_SR_CHINT_ODBOK   0x00000020
#define TSI721_SR_CHINT_IDBQRCV 0x00000010
#define TSI721_SR_CHINT_SUSP    0x00000008
#define TSI721_SR_CHINT_ODBTO   0x00000004
#define TSI721_SR_CHINT_ODBRTRY 0x00000002
#define TSI721_SR_CHINT_ODBERR  0x00000001
#define TSI721_SR_CHINT_ALL     0x0000003f

#define TSI721_IBWIN_NUM        8

#define TSI721_IBWIN_LB(x)      (0x29000 + (x) * 0x20)
#define TSI721_IBWIN_LB_BA      0xfffff000
#define TSI721_IBWIN_LB_WEN     0x00000001

#define TSI721_IBWIN_UB(x)      (0x29004 + (x) * 0x20)
#define TSI721_IBWIN_SZ(x)      (0x29008 + (x) * 0x20)
#define TSI721_IBWIN_SZ_SIZE    0x00001f00
#define TSI721_IBWIN_SIZE(size) (__fls(size) - 12)

#define TSI721_IBWIN_TLA(x)     (0x2900c + (x) * 0x20)
#define TSI721_IBWIN_TLA_ADD    0xfffff000
#define TSI721_IBWIN_TUA(x)     (0x29010 + (x) * 0x20)

#define TSI721_SR2PC_GEN_INTE   0x29800
#define TSI721_SR2PC_PWE        0x29804
#define TSI721_SR2PC_GEN_INT    0x29808

#define TSI721_DEV_INTE         0x29840
#define TSI721_DEV_INT          0x29844
#define TSI721_DEV_INTSET       0x29848
#define TSI721_DEV_INT_BDMA_CH  0x00002000
#define TSI721_DEV_INT_BDMA_NCH 0x00001000
#define TSI721_DEV_INT_SMSG_CH  0x00000800
#define TSI721_DEV_INT_SMSG_NCH 0x00000400
#define TSI721_DEV_INT_SR2PC_CH 0x00000200
#define TSI721_DEV_INT_SRIO     0x00000020

#define TSI721_DEV_CHAN_INTE    0x2984c
#define TSI721_DEV_CHAN_INT     0x29850

#define TSI721_INT_SR2PC_CHAN_M 0xff000000
#define TSI721_INT_SR2PC_CHAN(x) (1 << (24 + (x)))
#define TSI721_INT_IMSG_CHAN_M  0x00ff0000
#define TSI721_INT_IMSG_CHAN(x) (1 << (16 + (x)))
#define TSI721_INT_OMSG_CHAN_M  0x0000ff00
#define TSI721_INT_OMSG_CHAN(x) (1 << (8 + (x)))
#define TSI721_INT_BDMA_CHAN_M  0x000000ff
#define TSI721_INT_BDMA_CHAN(x) (1 << (x))

/*
 * PC2SR block registers
 */
#define TSI721_OBWIN_NUM        TSI721_PC2SR_WINS

#define TSI721_OBWINLB(x)       (0x40000 + (x) * 0x20)
#define TSI721_OBWINLB_BA       0xffff8000
#define TSI721_OBWINLB_WEN      0x00000001

#define TSI721_OBWINUB(x)       (0x40004 + (x) * 0x20)

#define TSI721_OBWINSZ(x)       (0x40008 + (x) * 0x20)
#define TSI721_OBWINSZ_SIZE     0x00001f00
#define TSI721_OBWIN_SIZE(size) (__fls(size) - 15)

#define TSI721_ZONE_SEL         0x41300
#define TSI721_ZONE_SEL_RD_WRB  0x00020000
#define TSI721_ZONE_SEL_GO      0x00010000
#define TSI721_ZONE_SEL_WIN     0x00000038
#define TSI721_ZONE_SEL_ZONE    0x00000007

#define TSI721_LUT_DATA0        0x41304
#define TSI721_LUT_DATA0_ADD    0xfffff000
#define TSI721_LUT_DATA0_RDTYPE 0x00000f00
#define TSI721_LUT_DATA0_NREAD  0x00000100
#define TSI721_LUT_DATA0_MNTRD  0x00000200
#define TSI721_LUT_DATA0_RDCRF  0x00000020
#define TSI721_LUT_DATA0_WRCRF  0x00000010
#define TSI721_LUT_DATA0_WRTYPE 0x0000000f
#define TSI721_LUT_DATA0_NWR    0x00000001
#define TSI721_LUT_DATA0_MNTWR  0x00000002
#define TSI721_LUT_DATA0_NWR_R  0x00000004

#define TSI721_LUT_DATA1        0x41308

#define TSI721_LUT_DATA2        0x4130c
#define TSI721_LUT_DATA2_HC     0xff000000
#define TSI721_LUT_DATA2_ADD65  0x000c0000
#define TSI721_LUT_DATA2_TT     0x00030000
#define TSI721_LUT_DATA2_DSTID  0x0000ffff

#define TSI721_PC2SR_INTE       0x41310

#define TSI721_DEVCTL           0x48004
#define TSI721_DEVCTL_SRBOOT_CMPL       0x00000004

#define TSI721_I2C_INT_ENABLE   0x49120

/*
 * Block DMA Engine Registers
 *   x = 0..7
 */

#define TSI721_DMAC_BASE(x)     (0x51000 + (x) * 0x1000)

#define TSI721_DMAC_DWRCNT      0x000
#define TSI721_DMAC_DRDCNT      0x004

#define TSI721_DMAC_CTL         0x008
#define TSI721_DMAC_CTL_SUSP    0x00000002
#define TSI721_DMAC_CTL_INIT    0x00000001

#define TSI721_DMAC_INT         0x00c
#define TSI721_DMAC_INT_STFULL  0x00000010
#define TSI721_DMAC_INT_DONE    0x00000008
#define TSI721_DMAC_INT_SUSP    0x00000004
#define TSI721_DMAC_INT_ERR     0x00000002
#define TSI721_DMAC_INT_IOFDONE 0x00000001
#define TSI721_DMAC_INT_ALL     0x0000001f

#define TSI721_DMAC_INTSET      0x010

#define TSI721_DMAC_STS         0x014
#define TSI721_DMAC_STS_ABORT   0x00400000
#define TSI721_DMAC_STS_RUN     0x00200000
#define TSI721_DMAC_STS_CS      0x001f0000

#define TSI721_DMAC_INTE        0x018

#define TSI721_DMAC_DPTRL       0x024
#define TSI721_DMAC_DPTRL_MASK  0xffffffe0

#define TSI721_DMAC_DPTRH       0x028

#define TSI721_DMAC_DSBL        0x02c
#define TSI721_DMAC_DSBL_MASK   0xffffffc0

#define TSI721_DMAC_DSBH        0x030

#define TSI721_DMAC_DSSZ        0x034
#define TSI721_DMAC_DSSZ_SIZE_M 0x0000000f
#define TSI721_DMAC_DSSZ_SIZE(size)     (__fls(size) - 4)

#define TSI721_DMAC_DSRP        0x038
#define TSI721_DMAC_DSRP_MASK   0x0007ffff

#define TSI721_DMAC_DSWP        0x03c
#define TSI721_DMAC_DSWP_MASK   0x0007ffff

#define TSI721_BDMA_INTE        0x5f000

/*
 * Messaging definitions
 */
#define TSI721_MSG_BUFFER_SIZE          RIO_MAX_MSG_SIZE
#define TSI721_MSG_MAX_SIZE             RIO_MAX_MSG_SIZE
#define TSI721_IMSG_MAXCH               8
#define TSI721_IMSG_CHNUM               TSI721_IMSG_MAXCH
#define TSI721_IMSGD_MIN_RING_SIZE      32
#define TSI721_IMSGD_RING_SIZE          512

#define TSI721_OMSG_CHNUM               4 /* One channel per MBOX */
#define TSI721_OMSGD_MIN_RING_SIZE      32
#define TSI721_OMSGD_RING_SIZE          512

/*
 * Outbound Messaging Engine Registers
 *   x = 0..7
 */

#define TSI721_OBDMAC_DWRCNT(x)         (0x61000 + (x) * 0x1000)

#define TSI721_OBDMAC_DRDCNT(x)         (0x61004 + (x) * 0x1000)

#define TSI721_OBDMAC_CTL(x)            (0x61008 + (x) * 0x1000)
#define TSI721_OBDMAC_CTL_MASK          0x00000007
#define TSI721_OBDMAC_CTL_RETRY_THR     0x00000004
#define TSI721_OBDMAC_CTL_SUSPEND       0x00000002
#define TSI721_OBDMAC_CTL_INIT          0x00000001

#define TSI721_OBDMAC_INT(x)            (0x6100c + (x) * 0x1000)
#define TSI721_OBDMAC_INTSET(x)         (0x61010 + (x) * 0x1000)
#define TSI721_OBDMAC_INTE(x)           (0x61018 + (x) * 0x1000)
#define TSI721_OBDMAC_INT_MASK          0x0000001F
#define TSI721_OBDMAC_INT_ST_FULL       0x00000010
#define TSI721_OBDMAC_INT_DONE          0x00000008
#define TSI721_OBDMAC_INT_SUSPENDED     0x00000004
#define TSI721_OBDMAC_INT_ERROR         0x00000002
#define TSI721_OBDMAC_INT_IOF_DONE      0x00000001
#define TSI721_OBDMAC_INT_ALL           TSI721_OBDMAC_INT_MASK

#define TSI721_OBDMAC_STS(x)            (0x61014 + (x) * 0x1000)
#define TSI721_OBDMAC_STS_MASK          0x007f0000
#define TSI721_OBDMAC_STS_ABORT         0x00400000
#define TSI721_OBDMAC_STS_RUN           0x00200000
#define TSI721_OBDMAC_STS_CS            0x001f0000

#define TSI721_OBDMAC_PWE(x)            (0x6101c + (x) * 0x1000)
#define TSI721_OBDMAC_PWE_MASK          0x00000002
#define TSI721_OBDMAC_PWE_ERROR_EN      0x00000002

#define TSI721_OBDMAC_DPTRL(x)          (0x61020 + (x) * 0x1000)
#define TSI721_OBDMAC_DPTRL_MASK        0xfffffff0

#define TSI721_OBDMAC_DPTRH(x)          (0x61024 + (x) * 0x1000)
#define TSI721_OBDMAC_DPTRH_MASK        0xffffffff

#define TSI721_OBDMAC_DSBL(x)           (0x61040 + (x) * 0x1000)
#define TSI721_OBDMAC_DSBL_MASK         0xffffffc0

#define TSI721_OBDMAC_DSBH(x)           (0x61044 + (x) * 0x1000)
#define TSI721_OBDMAC_DSBH_MASK         0xffffffff

#define TSI721_OBDMAC_DSSZ(x)           (0x61048 + (x) * 0x1000)
#define TSI721_OBDMAC_DSSZ_MASK         0x0000000f

#define TSI721_OBDMAC_DSRP(x)           (0x6104c + (x) * 0x1000)
#define TSI721_OBDMAC_DSRP_MASK         0x0007ffff

#define TSI721_OBDMAC_DSWP(x)           (0x61050 + (x) * 0x1000)
#define TSI721_OBDMAC_DSWP_MASK         0x0007ffff

#define TSI721_RQRPTO                   0x60010
#define TSI721_RQRPTO_MASK              0x00ffffff
#define TSI721_RQRPTO_VAL               400     /* Response TO value */

/*
 * Inbound Messaging Engine Registers
 *   x = 0..7
 */

#define TSI721_IB_DEVID_GLOBAL          0xffff
#define TSI721_IBDMAC_FQBL(x)           (0x61200 + (x) * 0x1000)
#define TSI721_IBDMAC_FQBL_MASK         0xffffffc0

#define TSI721_IBDMAC_FQBH(x)           (0x61204 + (x) * 0x1000)
#define TSI721_IBDMAC_FQBH_MASK         0xffffffff

#define TSI721_IBDMAC_FQSZ_ENTRY_INX    TSI721_IMSGD_RING_SIZE
#define TSI721_IBDMAC_FQSZ(x)           (0x61208 + (x) * 0x1000)
#define TSI721_IBDMAC_FQSZ_MASK         0x0000000f

#define TSI721_IBDMAC_FQRP(x)           (0x6120c + (x) * 0x1000)
#define TSI721_IBDMAC_FQRP_MASK         0x0007ffff

#define TSI721_IBDMAC_FQWP(x)           (0x61210 + (x) * 0x1000)
#define TSI721_IBDMAC_FQWP_MASK         0x0007ffff

#define TSI721_IBDMAC_FQTH(x)           (0x61214 + (x) * 0x1000)
#define TSI721_IBDMAC_FQTH_MASK         0x0007ffff

#define TSI721_IB_DEVID                 0x60020
#define TSI721_IB_DEVID_MASK            0x0000ffff

#define TSI721_IBDMAC_CTL(x)            (0x61240 + (x) * 0x1000)
#define TSI721_IBDMAC_CTL_MASK          0x00000003
#define TSI721_IBDMAC_CTL_SUSPEND       0x00000002
#define TSI721_IBDMAC_CTL_INIT          0x00000001

#define TSI721_IBDMAC_STS(x)            (0x61244 + (x) * 0x1000)
#define TSI721_IBDMAC_STS_MASK          0x007f0000
#define TSI721_IBSMAC_STS_ABORT         0x00400000
#define TSI721_IBSMAC_STS_RUN           0x00200000
#define TSI721_IBSMAC_STS_CS            0x001f0000

#define TSI721_IBDMAC_INT(x)            (0x61248 + (x) * 0x1000)
#define TSI721_IBDMAC_INTSET(x)         (0x6124c + (x) * 0x1000)
#define TSI721_IBDMAC_INTE(x)           (0x61250 + (x) * 0x1000)
#define TSI721_IBDMAC_INT_MASK          0x0000100f
#define TSI721_IBDMAC_INT_SRTO          0x00001000
#define TSI721_IBDMAC_INT_SUSPENDED     0x00000008
#define TSI721_IBDMAC_INT_PC_ERROR      0x00000004
#define TSI721_IBDMAC_INT_FQ_LOW        0x00000002
#define TSI721_IBDMAC_INT_DQ_RCV        0x00000001
#define TSI721_IBDMAC_INT_ALL           TSI721_IBDMAC_INT_MASK

#define TSI721_IBDMAC_PWE(x)            (0x61254 + (x) * 0x1000)
#define TSI721_IBDMAC_PWE_MASK          0x00001700
#define TSI721_IBDMAC_PWE_SRTO          0x00001000
#define TSI721_IBDMAC_PWE_ILL_FMT       0x00000400
#define TSI721_IBDMAC_PWE_ILL_DEC       0x00000200
#define TSI721_IBDMAC_PWE_IMP_SP        0x00000100

#define TSI721_IBDMAC_DQBL(x)           (0x61300 + (x) * 0x1000)
#define TSI721_IBDMAC_DQBL_MASK         0xffffffc0
#define TSI721_IBDMAC_DQBL_ADDR         0xffffffc0

#define TSI721_IBDMAC_DQBH(x)           (0x61304 + (x) * 0x1000)
#define TSI721_IBDMAC_DQBH_MASK         0xffffffff

#define TSI721_IBDMAC_DQRP(x)           (0x61308 + (x) * 0x1000)
#define TSI721_IBDMAC_DQRP_MASK         0x0007ffff

#define TSI721_IBDMAC_DQWR(x)           (0x6130c + (x) * 0x1000)
#define TSI721_IBDMAC_DQWR_MASK         0x0007ffff

#define TSI721_IBDMAC_DQSZ(x)           (0x61314 + (x) * 0x1000)
#define TSI721_IBDMAC_DQSZ_MASK         0x0000000f

/*
 * Messaging Engine Interrupts
 */

#define TSI721_SMSG_PWE                 0x6a004

#define TSI721_SMSG_INTE                0x6a000
#define TSI721_SMSG_INT                 0x6a008
#define TSI721_SMSG_INTSET              0x6a010
#define TSI721_SMSG_INT_MASK            0x0086ffff
#define TSI721_SMSG_INT_UNS_RSP         0x00800000
#define TSI721_SMSG_INT_ECC_NCOR        0x00040000
#define TSI721_SMSG_INT_ECC_COR         0x00020000
#define TSI721_SMSG_INT_ECC_NCOR_CH     0x0000ff00
#define TSI721_SMSG_INT_ECC_COR_CH      0x000000ff

#define TSI721_SMSG_ECC_LOG             0x6a014
#define TSI721_SMSG_ECC_LOG_MASK        0x00070007
#define TSI721_SMSG_ECC_LOG_ECC_NCOR_M  0x00070000
#define TSI721_SMSG_ECC_LOG_ECC_COR_M   0x00000007

#define TSI721_RETRY_GEN_CNT            0x6a100
#define TSI721_RETRY_GEN_CNT_MASK       0xffffffff

#define TSI721_RETRY_RX_CNT             0x6a104
#define TSI721_RETRY_RX_CNT_MASK        0xffffffff

#define TSI721_SMSG_ECC_COR_LOG(x)      (0x6a300 + (x) * 4)
#define TSI721_SMSG_ECC_COR_LOG_MASK    0x000000ff

#define TSI721_SMSG_ECC_NCOR(x)         (0x6a340 + (x) * 4)
#define TSI721_SMSG_ECC_NCOR_MASK       0x000000ff

/*
 * Block DMA Descriptors
 */

struct tsi721_dma_desc {
        __le32 type_id;

#define TSI721_DMAD_DEVID       0x0000ffff
#define TSI721_DMAD_CRF         0x00010000
#define TSI721_DMAD_PRIO        0x00060000
#define TSI721_DMAD_RTYPE       0x00780000
#define TSI721_DMAD_IOF         0x08000000
#define TSI721_DMAD_DTYPE       0xe0000000

        __le32 bcount;

#define TSI721_DMAD_BCOUNT1     0x03ffffff /* if DTYPE == 1 */
#define TSI721_DMAD_BCOUNT2     0x0000000f /* if DTYPE == 2 */
#define TSI721_DMAD_TT          0x0c000000
#define TSI721_DMAD_RADDR0      0xc0000000

        union {
                __le32 raddr_lo;           /* if DTYPE == (1 || 2) */
                __le32 next_lo;            /* if DTYPE == 3 */
        };

#define TSI721_DMAD_CFGOFF      0x00ffffff
#define TSI721_DMAD_HOPCNT      0xff000000

        union {
                __le32 raddr_hi;           /* if DTYPE == (1 || 2) */
                __le32 next_hi;            /* if DTYPE == 3 */
        };

        union {
                struct {                   /* if DTYPE == 1 */
                        __le32 bufptr_lo;
                        __le32 bufptr_hi;
                        __le32 s_dist;
                        __le32 s_size;
                } t1;
                __le32 data[4];            /* if DTYPE == 2 */
                u32    reserved[4];        /* if DTYPE == 3 */
        };
} __aligned(32);

/*
 * Inbound Messaging Descriptor
 */
struct tsi721_imsg_desc {
        __le32 type_id;

#define TSI721_IMD_DEVID        0x0000ffff
#define TSI721_IMD_CRF          0x00010000
#define TSI721_IMD_PRIO         0x00060000
#define TSI721_IMD_TT           0x00180000
#define TSI721_IMD_DTYPE        0xe0000000

        __le32 msg_info;

#define TSI721_IMD_BCOUNT       0x00000ff8
#define TSI721_IMD_SSIZE        0x0000f000
#define TSI721_IMD_LETER        0x00030000
#define TSI721_IMD_XMBOX        0x003c0000
#define TSI721_IMD_MBOX         0x00c00000
#define TSI721_IMD_CS           0x78000000
#define TSI721_IMD_HO           0x80000000

        __le32 bufptr_lo;
        __le32 bufptr_hi;
        u32    reserved[12];

} __aligned(64);

/*
 * Outbound Messaging Descriptor
 */
struct tsi721_omsg_desc {
        __le32 type_id;

#define TSI721_OMD_DEVID        0x0000ffff
#define TSI721_OMD_CRF          0x00010000
#define TSI721_OMD_PRIO         0x00060000
#define TSI721_OMD_IOF          0x08000000
#define TSI721_OMD_DTYPE        0xe0000000
#define TSI721_OMD_RSRVD        0x17f80000

        __le32 msg_info;

#define TSI721_OMD_BCOUNT       0x00000ff8
#define TSI721_OMD_SSIZE        0x0000f000
#define TSI721_OMD_LETER        0x00030000
#define TSI721_OMD_XMBOX        0x003c0000
#define TSI721_OMD_MBOX         0x00c00000
#define TSI721_OMD_TT           0x0c000000

        union {
                __le32 bufptr_lo;       /* if DTYPE == 4 */
                __le32 next_lo;         /* if DTYPE == 5 */
        };

        union {
                __le32 bufptr_hi;       /* if DTYPE == 4 */
                __le32 next_hi;         /* if DTYPE == 5 */
        };

} __aligned(16);

struct tsi721_dma_sts {
        __le64  desc_sts[8];
} __aligned(64);

struct tsi721_desc_sts_fifo {
        union {
                __le64  da64;
                struct {
                        __le32  lo;
                        __le32  hi;
                } da32;
        } stat[8];
} __aligned(64);

/* Descriptor types for BDMA and Messaging blocks */
enum dma_dtype {
        DTYPE1 = 1, /* Data Transfer DMA Descriptor */
        DTYPE2 = 2, /* Immediate Data Transfer DMA Descriptor */
        DTYPE3 = 3, /* Block Pointer DMA Descriptor */
        DTYPE4 = 4, /* Outbound Msg DMA Descriptor */
        DTYPE5 = 5, /* OB Messaging Block Pointer Descriptor */
        DTYPE6 = 6  /* Inbound Messaging Descriptor */
};

enum dma_rtype {
        NREAD = 0,
        LAST_NWRITE_R = 1,
        ALL_NWRITE = 2,
        ALL_NWRITE_R = 3,
        MAINT_RD = 4,
        MAINT_WR = 5
};

/*
 * mport Driver Definitions
 */
#define TSI721_DMA_CHNUM        TSI721_DMA_MAXCH

#define TSI721_DMACH_MAINT      7       /* DMA channel for maint requests */
#define TSI721_DMACH_MAINT_NBD  32      /* Number of BDs for maint requests */

#define TSI721_DMACH_DMA        1       /* DMA channel for data transfers */

#define MSG_DMA_ENTRY_INX_TO_SIZE(x)    ((0x10 << (x)) & 0xFFFF0)

enum tsi721_smsg_int_flag {
        SMSG_INT_NONE           = 0x00000000,
        SMSG_INT_ECC_COR_CH     = 0x000000ff,
        SMSG_INT_ECC_NCOR_CH    = 0x0000ff00,
        SMSG_INT_ECC_COR        = 0x00020000,
        SMSG_INT_ECC_NCOR       = 0x00040000,
        SMSG_INT_UNS_RSP        = 0x00800000,
        SMSG_INT_ALL            = 0x0006ffff
};

/* Structures */

#ifdef CONFIG_RAPIDIO_DMA_ENGINE

#define TSI721_BDMA_MAX_BCOUNT  (TSI721_DMAD_BCOUNT1 + 1)

struct tsi721_tx_desc {
        struct dma_async_tx_descriptor  txd;
        u16                             destid;
        /* low 64-bits of 66-bit RIO address */
        u64                             rio_addr;
        /* upper 2-bits of 66-bit RIO address */
        u8                              rio_addr_u;
        enum dma_rtype                  rtype;
        struct list_head                desc_node;
        struct scatterlist              *sg;
        unsigned int                    sg_len;
        enum dma_status                 status;
};

struct tsi721_bdma_chan {
        int             id;
        void __iomem    *regs;
        int             bd_num;         /* number of HW buffer descriptors */
        void            *bd_base;       /* start of DMA descriptors */
        dma_addr_t      bd_phys;
        void            *sts_base;      /* start of DMA BD status FIFO */
        dma_addr_t      sts_phys;
        int             sts_size;
        u32             sts_rdptr;
        u32             wr_count;
        u32             wr_count_next;

        struct dma_chan         dchan;
        struct tsi721_tx_desc   *tx_desc;
        spinlock_t              lock;
        struct tsi721_tx_desc   *active_tx;
        struct list_head        queue;
        struct list_head        free_list;
        struct tasklet_struct   tasklet;
        bool                    active;
};

#endif /* CONFIG_RAPIDIO_DMA_ENGINE */

struct tsi721_bdma_maint {
        int             ch_id;          /* BDMA channel number */
        int             bd_num;         /* number of buffer descriptors */
        void            *bd_base;       /* start of DMA descriptors */
        dma_addr_t      bd_phys;
        void            *sts_base;      /* start of DMA BD status FIFO */
        dma_addr_t      sts_phys;
        int             sts_size;
};

struct tsi721_imsg_ring {
        u32             size;
        /* VA/PA of data buffers for incoming messages */
        void            *buf_base;
        dma_addr_t      buf_phys;
        /* VA/PA of circular free buffer list */
        void            *imfq_base;
        dma_addr_t      imfq_phys;
        /* VA/PA of Inbound message descriptors */
        void            *imd_base;
        dma_addr_t      imd_phys;
         /* Inbound Queue buffer pointers */
        void            *imq_base[TSI721_IMSGD_RING_SIZE];

        u32             rx_slot;
        void            *dev_id;
        u32             fq_wrptr;
        u32             desc_rdptr;
        spinlock_t      lock;
};

struct tsi721_omsg_ring {
        u32             size;
        /* VA/PA of OB Msg descriptors */
        void            *omd_base;
        dma_addr_t      omd_phys;
        /* VA/PA of OB Msg data buffers */
        void            *omq_base[TSI721_OMSGD_RING_SIZE];
        dma_addr_t      omq_phys[TSI721_OMSGD_RING_SIZE];
        /* VA/PA of OB Msg descriptor status FIFO */
        void            *sts_base;
        dma_addr_t      sts_phys;
        u32             sts_size; /* # of allocated status entries */
        u32             sts_rdptr;

        u32             tx_slot;
        void            *dev_id;
        u32             wr_count;
        spinlock_t      lock;
};

enum tsi721_flags {
        TSI721_USING_MSI        = (1 << 0),
        TSI721_USING_MSIX       = (1 << 1),
        TSI721_IMSGID_SET       = (1 << 2),
};

#ifdef CONFIG_PCI_MSI
/*
 * MSI-X Table Entries (0 ... 69)
 */
#define TSI721_MSIX_DMACH_DONE(x)       (0 + (x))
#define TSI721_MSIX_DMACH_INT(x)        (8 + (x))
#define TSI721_MSIX_BDMA_INT            16
#define TSI721_MSIX_OMSG_DONE(x)        (17 + (x))
#define TSI721_MSIX_OMSG_INT(x)         (25 + (x))
#define TSI721_MSIX_IMSG_DQ_RCV(x)      (33 + (x))
#define TSI721_MSIX_IMSG_INT(x)         (41 + (x))
#define TSI721_MSIX_MSG_INT             49
#define TSI721_MSIX_SR2PC_IDBQ_RCV(x)   (50 + (x))
#define TSI721_MSIX_SR2PC_CH_INT(x)     (58 + (x))
#define TSI721_MSIX_SR2PC_INT           66
#define TSI721_MSIX_PC2SR_INT           67
#define TSI721_MSIX_SRIO_MAC_INT        68
#define TSI721_MSIX_I2C_INT             69

/* MSI-X vector and init table entry indexes */
enum tsi721_msix_vect {
        TSI721_VECT_IDB,
        TSI721_VECT_PWRX, /* PW_RX is part of SRIO MAC Interrupt reporting */
        TSI721_VECT_OMB0_DONE,
        TSI721_VECT_OMB1_DONE,
        TSI721_VECT_OMB2_DONE,
        TSI721_VECT_OMB3_DONE,
        TSI721_VECT_OMB0_INT,
        TSI721_VECT_OMB1_INT,
        TSI721_VECT_OMB2_INT,
        TSI721_VECT_OMB3_INT,
        TSI721_VECT_IMB0_RCV,
        TSI721_VECT_IMB1_RCV,
        TSI721_VECT_IMB2_RCV,
        TSI721_VECT_IMB3_RCV,
        TSI721_VECT_IMB0_INT,
        TSI721_VECT_IMB1_INT,
        TSI721_VECT_IMB2_INT,
        TSI721_VECT_IMB3_INT,
#ifdef CONFIG_RAPIDIO_DMA_ENGINE
        TSI721_VECT_DMA0_DONE,
        TSI721_VECT_DMA1_DONE,
        TSI721_VECT_DMA2_DONE,
        TSI721_VECT_DMA3_DONE,
        TSI721_VECT_DMA4_DONE,
        TSI721_VECT_DMA5_DONE,
        TSI721_VECT_DMA6_DONE,
        TSI721_VECT_DMA7_DONE,
        TSI721_VECT_DMA0_INT,
        TSI721_VECT_DMA1_INT,
        TSI721_VECT_DMA2_INT,
        TSI721_VECT_DMA3_INT,
        TSI721_VECT_DMA4_INT,
        TSI721_VECT_DMA5_INT,
        TSI721_VECT_DMA6_INT,
        TSI721_VECT_DMA7_INT,
#endif /* CONFIG_RAPIDIO_DMA_ENGINE */
        TSI721_VECT_MAX
};

#define IRQ_DEVICE_NAME_MAX     64

struct msix_irq {
        u16     vector;
        char    irq_name[IRQ_DEVICE_NAME_MAX];
};
#endif /* CONFIG_PCI_MSI */

struct tsi721_ib_win_mapping {
        struct list_head node;
        dma_addr_t      lstart;
};

struct tsi721_ib_win {
        u64             rstart;
        u32             size;
        dma_addr_t      lstart;
        bool            active;
        bool            xlat;
        struct list_head mappings;
};

struct tsi721_obw_bar {
        u64             base;
        u64             size;
        u64             free;
};

struct tsi721_ob_win {
        u64             base;
        u32             size;
        u16             destid;
        u64             rstart;
        bool            active;
        struct tsi721_obw_bar *pbar;
};

struct tsi721_device {
        struct pci_dev  *pdev;
        struct rio_mport mport;
        u32             flags;
        void __iomem    *regs;
#ifdef CONFIG_PCI_MSI
        struct msix_irq msix[TSI721_VECT_MAX];
#endif
        /* Doorbells */
        void __iomem    *odb_base;
        void            *idb_base;
        dma_addr_t      idb_dma;
        struct work_struct idb_work;
        u32             db_discard_count;

        /* Inbound Port-Write */
        struct work_struct pw_work;
        struct kfifo    pw_fifo;
        spinlock_t      pw_fifo_lock;
        u32             pw_discard_count;

        /* BDMA Engine */
        struct tsi721_bdma_maint mdma; /* Maintenance rd/wr request channel */

#ifdef CONFIG_RAPIDIO_DMA_ENGINE
        struct tsi721_bdma_chan bdma[TSI721_DMA_CHNUM];
#endif

        /* Inbound Messaging */
        int             imsg_init[TSI721_IMSG_CHNUM];
        struct tsi721_imsg_ring imsg_ring[TSI721_IMSG_CHNUM];

        /* Outbound Messaging */
        int             omsg_init[TSI721_OMSG_CHNUM];
        struct tsi721_omsg_ring omsg_ring[TSI721_OMSG_CHNUM];

        /* Inbound Mapping Windows */
        struct tsi721_ib_win ib_win[TSI721_IBWIN_NUM];
        int             ibwin_cnt;

        /* Outbound Mapping Windows */
        struct tsi721_obw_bar p2r_bar[2];
        struct tsi721_ob_win  ob_win[TSI721_OBWIN_NUM];
        int             obwin_cnt;
};

#ifdef CONFIG_RAPIDIO_DMA_ENGINE
extern void tsi721_bdma_handler(struct tsi721_bdma_chan *bdma_chan);
extern int tsi721_register_dma(struct tsi721_device *priv);
extern void tsi721_unregister_dma(struct tsi721_device *priv);
extern void tsi721_dma_stop_all(struct tsi721_device *priv);
#else
#define tsi721_dma_stop_all(priv) do {} while (0)
#define tsi721_unregister_dma(priv) do {} while (0)
#endif

#endif