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/*

 * This file is subject to the terms and conditions of the GNU General Public

 * License.  See the file "COPYING" in the main directory of this archive

 * for more details.

 *

 * xwidget.h - generic crosstalk widget header file, derived from IRIX

 * <sys/xtalk/xtalkwidget.h>, revision 1.32.

 *

 * Copyright (C) 1996, 1999 Silcon Graphics, Inc.

 * Copyright (C) 1999 Ralf Baechle (ralf@gnu.org)

 */

#ifndef _ASM_XTALK_XWIDGET_H

#define _ASM_XTALK_XWIDGET_H

#include <linux/types.h>

#include <asm/xtalk/xtalk.h>

#define WIDGET_ID                       0x04

#define WIDGET_STATUS                   0x0c

#define WIDGET_ERR_UPPER_ADDR           0x14

#define WIDGET_ERR_LOWER_ADDR           0x1c

#define WIDGET_CONTROL                  0x24

#define WIDGET_REQ_TIMEOUT              0x2c

#define WIDGET_INTDEST_UPPER_ADDR       0x34

#define WIDGET_INTDEST_LOWER_ADDR       0x3c

#define WIDGET_ERR_CMD_WORD             0x44

#define WIDGET_LLP_CFG                  0x4c

#define WIDGET_TFLUSH                   0x54

/* WIDGET_ID */

#define WIDGET_REV_NUM                  0xf0000000

#define WIDGET_PART_NUM                 0x0ffff000

#define WIDGET_MFG_NUM                  0x00000ffe

#define WIDGET_REV_NUM_SHFT             28

#define WIDGET_PART_NUM_SHFT            12

#define WIDGET_MFG_NUM_SHFT             1

#define XWIDGET_PART_NUM(widgetid) (((widgetid) & WIDGET_PART_NUM) >> WIDGET_PART_NUM_SHFT)

#define XWIDGET_REV_NUM(widgetid) (((widgetid) & WIDGET_REV_NUM) >> WIDGET_REV_NUM_SHFT)

#define XWIDGET_MFG_NUM(widgetid) (((widgetid) & WIDGET_MFG_NUM) >> WIDGET_MFG_NUM_SHFT)

/* WIDGET_STATUS */

#define WIDGET_LLP_REC_CNT              0xff000000

#define WIDGET_LLP_TX_CNT               0x00ff0000

#define WIDGET_PENDING                  0x0000001f

/* WIDGET_ERR_UPPER_ADDR */

#define WIDGET_ERR_UPPER_ADDR_ONLY      0x0000ffff

/* WIDGET_CONTROL */

#define WIDGET_F_BAD_PKT                0x00010000

#define WIDGET_LLP_XBAR_CRD             0x0000f000

#define WIDGET_LLP_XBAR_CRD_SHFT        12

#define WIDGET_CLR_RLLP_CNT             0x00000800

#define WIDGET_CLR_TLLP_CNT             0x00000400

#define WIDGET_SYS_END                  0x00000200

#define WIDGET_MAX_TRANS                0x000001f0

#define WIDGET_WIDGET_ID                0x0000000f

/* WIDGET_INTDEST_UPPER_ADDR */

#define WIDGET_INT_VECTOR               0xff000000

#define WIDGET_INT_VECTOR_SHFT          24

#define WIDGET_TARGET_ID                0x000f0000

#define WIDGET_TARGET_ID_SHFT           16

#define WIDGET_UPP_ADDR                 0x0000ffff

/* WIDGET_ERR_CMD_WORD */

#define WIDGET_DIDN                     0xf0000000

#define WIDGET_SIDN                     0x0f000000

#define WIDGET_PACTYP                   0x00f00000

#define WIDGET_TNUM                     0x000f8000

#define WIDGET_COHERENT                 0x00004000

#define WIDGET_DS                       0x00003000

#define WIDGET_GBR                      0x00000800

#define WIDGET_VBPM                     0x00000400

#define WIDGET_ERROR                    0x00000200

#define WIDGET_BARRIER                  0x00000100

/* WIDGET_LLP_CFG */

#define WIDGET_LLP_MAXRETRY             0x03ff0000

#define WIDGET_LLP_MAXRETRY_SHFT        16

#define WIDGET_LLP_NULLTIMEOUT          0x0000fc00

#define WIDGET_LLP_NULLTIMEOUT_SHFT     10

#define WIDGET_LLP_MAXBURST             0x000003ff

#define WIDGET_LLP_MAXBURST_SHFT        0

/*

 * according to the crosstalk spec, only 32-bits access to the widget

 * configuration registers is allowed.  some widgets may allow 64-bits

 * access but software should not depend on it.  registers beyond the

 * widget target flush register are widget dependent thus will not be

 * defined here

 */

#ifndef __ASSEMBLY__

typedef u32 widgetreg_t;

/* widget configuration registers */

typedef volatile struct widget_cfg {

        widgetreg_t             w_pad_0;                /* 0x00 */

        widgetreg_t             w_id;                   /* 0x04 */

        widgetreg_t             w_pad_1;                /* 0x08 */

        widgetreg_t             w_status;               /* 0x0c */

        widgetreg_t             w_pad_2;                /* 0x10 */

        widgetreg_t             w_err_upper_addr;       /* 0x14 */

        widgetreg_t             w_pad_3;                /* 0x18 */

        widgetreg_t             w_err_lower_addr;       /* 0x1c */

        widgetreg_t             w_pad_4;                /* 0x20 */

        widgetreg_t             w_control;              /* 0x24 */

        widgetreg_t             w_pad_5;                /* 0x28 */

        widgetreg_t             w_req_timeout;          /* 0x2c */

        widgetreg_t             w_pad_6;                /* 0x30 */

        widgetreg_t             w_intdest_upper_addr;   /* 0x34 */

        widgetreg_t             w_pad_7;                /* 0x38 */

        widgetreg_t             w_intdest_lower_addr;   /* 0x3c */

        widgetreg_t             w_pad_8;                /* 0x40 */

        widgetreg_t             w_err_cmd_word;         /* 0x44 */

        widgetreg_t             w_pad_9;                /* 0x48 */

        widgetreg_t             w_llp_cfg;              /* 0x4c */

        widgetreg_t             w_pad_10;               /* 0x50 */

        widgetreg_t             w_tflush;               /* 0x54 */

} widget_cfg_t;

typedef struct {

        unsigned        didn:4;

        unsigned        sidn:4;

        unsigned        pactyp:4;

        unsigned        tnum:5;

        unsigned        ct:1;

        unsigned        ds:2;

        unsigned        gbr:1;

        unsigned        vbpm:1;

        unsigned        error:1;

        unsigned        bo:1;

        unsigned        other:8;

} w_err_cmd_word_f;

typedef union {

        widgetreg_t             r;

        w_err_cmd_word_f        f;

} w_err_cmd_word_u;

typedef struct xwidget_info_s *xwidget_info_t;

/*

 * Crosstalk Widget Hardware Identification, as defined in the Crosstalk spec.

 */

typedef struct xwidget_hwid_s {

        xwidget_part_num_t      part_num;

        xwidget_rev_num_t       rev_num;

        xwidget_mfg_num_t       mfg_num;

} *xwidget_hwid_t;

/*

 * Returns 1 if a driver that handles devices described by hwid1 is able

 * to manage a device with hardwareid hwid2.  NOTE: We don't check rev

 * numbers at all.

 */

#define XWIDGET_HARDWARE_ID_MATCH(hwid1, hwid2) \

        (((hwid1)->part_num == (hwid2)->part_num) && \

        (((hwid1)->mfg_num == XWIDGET_MFG_NUM_NONE) || \

        ((hwid2)->mfg_num == XWIDGET_MFG_NUM_NONE) || \

        ((hwid1)->mfg_num == (hwid2)->mfg_num)))

#endif /* !__ASSEMBLY__ */

#endif /* _ASM_XTALK_XWIDGET_H */