kernel/arch/mips/include/asm/xtalk/xwidget.h

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * xwidget.h - generic crosstalk widget header file, derived from IRIX
   7  * <sys/xtalk/xtalkwidget.h>, revision 1.32.
   8  *
   9  * Copyright (C) 1996, 1999 Silcon Graphics, Inc.
  10  * Copyright (C) 1999 Ralf Baechle (ralf@gnu.org)
  11  */
  12 #ifndef _ASM_XTALK_XWIDGET_H
  13 #define _ASM_XTALK_XWIDGET_H
  14
  15 #include <linux/types.h>
  16 #include <asm/xtalk/xtalk.h>
  17
  18 #define WIDGET_ID                       0x04
  19 #define WIDGET_STATUS                   0x0c
  20 #define WIDGET_ERR_UPPER_ADDR           0x14
  21 #define WIDGET_ERR_LOWER_ADDR           0x1c
  22 #define WIDGET_CONTROL                  0x24
  23 #define WIDGET_REQ_TIMEOUT              0x2c
  24 #define WIDGET_INTDEST_UPPER_ADDR       0x34
  25 #define WIDGET_INTDEST_LOWER_ADDR       0x3c
  26 #define WIDGET_ERR_CMD_WORD             0x44
  27 #define WIDGET_LLP_CFG                  0x4c
  28 #define WIDGET_TFLUSH                   0x54
  29
  30 /* WIDGET_ID */
  31 #define WIDGET_REV_NUM                  0xf0000000
  32 #define WIDGET_PART_NUM                 0x0ffff000
  33 #define WIDGET_MFG_NUM                  0x00000ffe
  34 #define WIDGET_REV_NUM_SHFT             28
  35 #define WIDGET_PART_NUM_SHFT            12
  36 #define WIDGET_MFG_NUM_SHFT             1
  37
  38 #define XWIDGET_PART_NUM(widgetid) (((widgetid) & WIDGET_PART_NUM) >> WIDGET_PART_NUM_SHFT)
  39 #define XWIDGET_REV_NUM(widgetid) (((widgetid) & WIDGET_REV_NUM) >> WIDGET_REV_NUM_SHFT)
  40 #define XWIDGET_MFG_NUM(widgetid) (((widgetid) & WIDGET_MFG_NUM) >> WIDGET_MFG_NUM_SHFT)
  41
  42 /* WIDGET_STATUS */
  43 #define WIDGET_LLP_REC_CNT              0xff000000
  44 #define WIDGET_LLP_TX_CNT               0x00ff0000
  45 #define WIDGET_PENDING                  0x0000001f
  46
  47 /* WIDGET_ERR_UPPER_ADDR */
  48 #define WIDGET_ERR_UPPER_ADDR_ONLY      0x0000ffff
  49
  50 /* WIDGET_CONTROL */
  51 #define WIDGET_F_BAD_PKT                0x00010000
  52 #define WIDGET_LLP_XBAR_CRD             0x0000f000
  53 #define WIDGET_LLP_XBAR_CRD_SHFT        12
  54 #define WIDGET_CLR_RLLP_CNT             0x00000800
  55 #define WIDGET_CLR_TLLP_CNT             0x00000400
  56 #define WIDGET_SYS_END                  0x00000200
  57 #define WIDGET_MAX_TRANS                0x000001f0
  58 #define WIDGET_WIDGET_ID                0x0000000f
  59
  60 /* WIDGET_INTDEST_UPPER_ADDR */
  61 #define WIDGET_INT_VECTOR               0xff000000
  62 #define WIDGET_INT_VECTOR_SHFT          24
  63 #define WIDGET_TARGET_ID                0x000f0000
  64 #define WIDGET_TARGET_ID_SHFT           16
  65 #define WIDGET_UPP_ADDR                 0x0000ffff
  66
  67 /* WIDGET_ERR_CMD_WORD */
  68 #define WIDGET_DIDN                     0xf0000000
  69 #define WIDGET_SIDN                     0x0f000000
  70 #define WIDGET_PACTYP                   0x00f00000
  71 #define WIDGET_TNUM                     0x000f8000
  72 #define WIDGET_COHERENT                 0x00004000
  73 #define WIDGET_DS                       0x00003000
  74 #define WIDGET_GBR                      0x00000800
  75 #define WIDGET_VBPM                     0x00000400
  76 #define WIDGET_ERROR                    0x00000200
  77 #define WIDGET_BARRIER                  0x00000100
  78
  79 /* WIDGET_LLP_CFG */
  80 #define WIDGET_LLP_MAXRETRY             0x03ff0000
  81 #define WIDGET_LLP_MAXRETRY_SHFT        16
  82 #define WIDGET_LLP_NULLTIMEOUT          0x0000fc00
  83 #define WIDGET_LLP_NULLTIMEOUT_SHFT     10
  84 #define WIDGET_LLP_MAXBURST             0x000003ff
  85 #define WIDGET_LLP_MAXBURST_SHFT        0
  86
  87 /*
  88  * according to the crosstalk spec, only 32-bits access to the widget
  89  * configuration registers is allowed.  some widgets may allow 64-bits
  90  * access but software should not depend on it.  registers beyond the
  91  * widget target flush register are widget dependent thus will not be
  92  * defined here
  93  */
  94 #ifndef __ASSEMBLY__
  95 typedef u32 widgetreg_t;
  96
  97 /* widget configuration registers */
  98 typedef volatile struct widget_cfg {
  99         widgetreg_t             w_pad_0;                /* 0x00 */
 100         widgetreg_t             w_id;                   /* 0x04 */
 101         widgetreg_t             w_pad_1;                /* 0x08 */
 102         widgetreg_t             w_status;               /* 0x0c */
 103         widgetreg_t             w_pad_2;                /* 0x10 */
 104         widgetreg_t             w_err_upper_addr;       /* 0x14 */
 105         widgetreg_t             w_pad_3;                /* 0x18 */
 106         widgetreg_t             w_err_lower_addr;       /* 0x1c */
 107         widgetreg_t             w_pad_4;                /* 0x20 */
 108         widgetreg_t             w_control;              /* 0x24 */
 109         widgetreg_t             w_pad_5;                /* 0x28 */
 110         widgetreg_t             w_req_timeout;          /* 0x2c */
 111         widgetreg_t             w_pad_6;                /* 0x30 */
 112         widgetreg_t             w_intdest_upper_addr;   /* 0x34 */
 113         widgetreg_t             w_pad_7;                /* 0x38 */
 114         widgetreg_t             w_intdest_lower_addr;   /* 0x3c */
 115         widgetreg_t             w_pad_8;                /* 0x40 */
 116         widgetreg_t             w_err_cmd_word;         /* 0x44 */
 117         widgetreg_t             w_pad_9;                /* 0x48 */
 118         widgetreg_t             w_llp_cfg;              /* 0x4c */
 119         widgetreg_t             w_pad_10;               /* 0x50 */
 120         widgetreg_t             w_tflush;               /* 0x54 */
 121 } widget_cfg_t;
 122
 123 typedef struct {
 124         unsigned        didn:4;
 125         unsigned        sidn:4;
 126         unsigned        pactyp:4;
 127         unsigned        tnum:5;
 128         unsigned        ct:1;
 129         unsigned        ds:2;
 130         unsigned        gbr:1;
 131         unsigned        vbpm:1;
 132         unsigned        error:1;
 133         unsigned        bo:1;
 134         unsigned        other:8;
 135 } w_err_cmd_word_f;
 136
 137 typedef union {
 138         widgetreg_t             r;
 139         w_err_cmd_word_f        f;
 140 } w_err_cmd_word_u;
 141
 142 typedef struct xwidget_info_s *xwidget_info_t;
 143
 144 /*
 145  * Crosstalk Widget Hardware Identification, as defined in the Crosstalk spec.
 146  */
 147 typedef struct xwidget_hwid_s {
 148         xwidget_part_num_t      part_num;
 149         xwidget_rev_num_t       rev_num;
 150         xwidget_mfg_num_t       mfg_num;
 151 } *xwidget_hwid_t;
 152
 153
 154 /*
 155  * Returns 1 if a driver that handles devices described by hwid1 is able
 156  * to manage a device with hardwareid hwid2.  NOTE: We don't check rev
 157  * numbers at all.
 158  */
 159 #define XWIDGET_HARDWARE_ID_MATCH(hwid1, hwid2) \
 160         (((hwid1)->part_num == (hwid2)->part_num) && \
 161         (((hwid1)->mfg_num == XWIDGET_MFG_NUM_NONE) || \
 162         ((hwid2)->mfg_num == XWIDGET_MFG_NUM_NONE) || \
 163         ((hwid1)->mfg_num == (hwid2)->mfg_num)))
 164
 165 #endif /* !__ASSEMBLY__ */
 166
 167 #endif /* _ASM_XTALK_XWIDGET_H */