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 /* Xtalk Widget Device Mfgr Nums */
  88 #define WIDGET_XBOW_MFGR_NUM    0x0      /* IP30 XBow Chip */
  89 #define WIDGET_XXBOW_MFGR_NUM   0x0      /* IP35 Xbow + XBridge Chip */
  90 #define WIDGET_ODYS_MFGR_NUM    0x023    /* Odyssey / VPro GFX */
  91 #define WIDGET_TPU_MFGR_NUM     0x024    /* Tensor Processor Unit */
  92 #define WIDGET_XBRDG_MFGR_NUM   0x024    /* IP35 XBridge Chip */
  93 #define WIDGET_HEART_MFGR_NUM   0x036    /* IP30 HEART Chip */
  94 #define WIDGET_BRIDG_MFGR_NUM   0x036    /* PCI Bridge */
  95 #define WIDGET_HUB_MFGR_NUM     0x036    /* IP27 Hub Chip */
  96 #define WIDGET_BDRCK_MFGR_NUM   0x036    /* IP35 Bedrock Chip */
  97 #define WIDGET_IMPCT_MFGR_NUM   0x2aa    /* HQ4 / Impact GFX */
  98 #define WIDGET_KONA_MFGR_NUM    0x2aa    /* InfiniteReality3 / Kona GFX */
  99 #define WIDGET_NULL_MFGR_NUM    -1       /* NULL */
 100
 101 /* Xtalk Widget Device Part Nums */
 102 #define WIDGET_XBOW_PART_NUM    0x0000
 103 #define WIDGET_HEART_PART_NUM   0xc001
 104 #define WIDGET_BRIDG_PART_NUM   0xc002
 105 #define WIDGET_IMPCT_PART_NUM   0xc003
 106 #define WIDGET_ODYS_PART_NUM    0xc013
 107 #define WIDGET_HUB_PART_NUM     0xc101
 108 #define WIDGET_KONA_PART_NUM    0xc102
 109 #define WIDGET_BDRCK_PART_NUM   0xc110
 110 #define WIDGET_TPU_PART_NUM     0xc202
 111 #define WIDGET_XXBOW_PART_NUM   0xd000
 112 #define WIDGET_XBRDG_PART_NUM   0xd002
 113 #define WIDGET_NULL_PART_NUM    -1
 114
 115 /* For Xtalk Widget identification */
 116 struct widget_ident {
 117         u32 mfgr;
 118         u32 part;
 119         char *name;
 120         char *revs[16];
 121 };
 122
 123 /* Known Xtalk Widgets */
 124 static const struct widget_ident __initconst widget_idents[] = {
 125         {
 126                 WIDGET_XBOW_MFGR_NUM,
 127                 WIDGET_XBOW_PART_NUM,
 128                 "xbow",
 129                 {NULL, "1.0", "1.1", "1.2", "1.3", "2.0", NULL},
 130         },
 131         {
 132                 WIDGET_HEART_MFGR_NUM,
 133                 WIDGET_HEART_PART_NUM,
 134                 "heart",
 135                 {NULL, "A", "B", "C", "D", "E", "F", NULL},
 136         },
 137         {
 138                 WIDGET_BRIDG_MFGR_NUM,
 139                 WIDGET_BRIDG_PART_NUM,
 140                 "bridge",
 141                 {NULL, "A", "B", "C", "D", NULL},
 142         },
 143         {
 144                 WIDGET_IMPCT_MFGR_NUM,
 145                 WIDGET_IMPCT_PART_NUM,
 146                 "impact",
 147                 {NULL, "A", "B", NULL},
 148         },
 149         {
 150                 WIDGET_ODYS_MFGR_NUM,
 151                 WIDGET_ODYS_PART_NUM,
 152                 "odyssey",
 153                 {NULL, "A", "B", NULL},
 154         },
 155         {
 156                 WIDGET_HUB_MFGR_NUM,
 157                 WIDGET_HUB_PART_NUM,
 158                 "hub",
 159                 {NULL, "1.0", "2.0", "2.1", "2.2", "2.3", "2.4", NULL},
 160         },
 161         {
 162                 WIDGET_KONA_MFGR_NUM,
 163                 WIDGET_KONA_PART_NUM,
 164                 "kona",
 165                 {NULL},
 166         },
 167         {
 168                 WIDGET_BDRCK_MFGR_NUM,
 169                 WIDGET_BDRCK_PART_NUM,
 170                 "bedrock",
 171                 {NULL, "1.0", "1.1", NULL},
 172         },
 173         {
 174                 WIDGET_TPU_MFGR_NUM,
 175                 WIDGET_TPU_PART_NUM,
 176                 "tpu",
 177                 {"0", NULL},
 178         },
 179         {
 180                 WIDGET_XXBOW_MFGR_NUM,
 181                 WIDGET_XXBOW_PART_NUM,
 182                 "xxbow",
 183                 {NULL, "1.0", "2.0", NULL},
 184         },
 185         {
 186                 WIDGET_XBRDG_MFGR_NUM,
 187                 WIDGET_XBRDG_PART_NUM,
 188                 "xbridge",
 189                 {NULL, "A", "B", NULL},
 190         },
 191         {
 192                 WIDGET_NULL_MFGR_NUM,
 193                 WIDGET_NULL_PART_NUM,
 194                 NULL,
 195                 {NULL},
 196         }
 197 };
 198
 199 /*
 200  * according to the crosstalk spec, only 32-bits access to the widget
 201  * configuration registers is allowed.  some widgets may allow 64-bits
 202  * access but software should not depend on it.  registers beyond the
 203  * widget target flush register are widget dependent thus will not be
 204  * defined here
 205  */
 206 #ifndef __ASSEMBLY__
 207 typedef u32 widgetreg_t;
 208
 209 /* widget configuration registers */
 210 typedef volatile struct widget_cfg {
 211         widgetreg_t             w_pad_0;                /* 0x00 */
 212         widgetreg_t             w_id;                   /* 0x04 */
 213         widgetreg_t             w_pad_1;                /* 0x08 */
 214         widgetreg_t             w_status;               /* 0x0c */
 215         widgetreg_t             w_pad_2;                /* 0x10 */
 216         widgetreg_t             w_err_upper_addr;       /* 0x14 */
 217         widgetreg_t             w_pad_3;                /* 0x18 */
 218         widgetreg_t             w_err_lower_addr;       /* 0x1c */
 219         widgetreg_t             w_pad_4;                /* 0x20 */
 220         widgetreg_t             w_control;              /* 0x24 */
 221         widgetreg_t             w_pad_5;                /* 0x28 */
 222         widgetreg_t             w_req_timeout;          /* 0x2c */
 223         widgetreg_t             w_pad_6;                /* 0x30 */
 224         widgetreg_t             w_intdest_upper_addr;   /* 0x34 */
 225         widgetreg_t             w_pad_7;                /* 0x38 */
 226         widgetreg_t             w_intdest_lower_addr;   /* 0x3c */
 227         widgetreg_t             w_pad_8;                /* 0x40 */
 228         widgetreg_t             w_err_cmd_word;         /* 0x44 */
 229         widgetreg_t             w_pad_9;                /* 0x48 */
 230         widgetreg_t             w_llp_cfg;              /* 0x4c */
 231         widgetreg_t             w_pad_10;               /* 0x50 */
 232         widgetreg_t             w_tflush;               /* 0x54 */
 233 } widget_cfg_t;
 234
 235 typedef struct {
 236         unsigned        didn:4;
 237         unsigned        sidn:4;
 238         unsigned        pactyp:4;
 239         unsigned        tnum:5;
 240         unsigned        ct:1;
 241         unsigned        ds:2;
 242         unsigned        gbr:1;
 243         unsigned        vbpm:1;
 244         unsigned        error:1;
 245         unsigned        bo:1;
 246         unsigned        other:8;
 247 } w_err_cmd_word_f;
 248
 249 typedef union {
 250         widgetreg_t             r;
 251         w_err_cmd_word_f        f;
 252 } w_err_cmd_word_u;
 253
 254 typedef struct xwidget_info_s *xwidget_info_t;
 255
 256 /*
 257  * Crosstalk Widget Hardware Identification, as defined in the Crosstalk spec.
 258  */
 259 typedef struct xwidget_hwid_s {
 260         xwidget_part_num_t      part_num;
 261         xwidget_rev_num_t       rev_num;
 262         xwidget_mfg_num_t       mfg_num;
 263 } *xwidget_hwid_t;
 264
 265
 266 /*
 267  * Returns 1 if a driver that handles devices described by hwid1 is able
 268  * to manage a device with hardwareid hwid2.  NOTE: We don't check rev
 269  * numbers at all.
 270  */
 271 #define XWIDGET_HARDWARE_ID_MATCH(hwid1, hwid2) \
 272         (((hwid1)->part_num == (hwid2)->part_num) && \
 273         (((hwid1)->mfg_num == XWIDGET_MFG_NUM_NONE) || \
 274         ((hwid2)->mfg_num == XWIDGET_MFG_NUM_NONE) || \
 275         ((hwid1)->mfg_num == (hwid2)->mfg_num)))
 276
 277 #endif /* !__ASSEMBLY__ */
 278
 279 #endif /* _ASM_XTALK_XWIDGET_H */