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C/C++ Source or Header  |  2008-12-24  |  4.9 KB  |  168 lines
  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 */
  168.