| 1 | /*************************************************************************** |
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| 2 | * Copyright (c) 2003-2006, Broadcom Corporation |
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| 3 | * All Rights Reserved |
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| 4 | * Confidential Property of Broadcom Corporation |
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| 5 | * |
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| 6 | * THIS SOFTWARE MAY ONLY BE USED SUBJECT TO AN EXECUTED SOFTWARE LICENSE |
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| 7 | * AGREEMENT BETWEEN THE USER AND BROADCOM. YOU HAVE NO RIGHT TO USE OR |
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| 8 | * EXPLOIT THIS MATERIAL EXCEPT SUBJECT TO THE TERMS OF SUCH AN AGREEMENT. |
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| 9 | * |
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| 10 | * $brcm_Workfile: $ |
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| 11 | * $brcm_Revision: $ |
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| 12 | * $brcm_Date: $ |
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| 13 | * |
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| 14 | * Module Description: |
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| 15 | * |
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| 16 | * Revision History: |
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| 17 | * |
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| 18 | * $brcm_Log: $ |
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| 19 | * |
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| 20 | ***************************************************************************/ |
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| 21 | #include "xds_ctrl.h" |
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| 22 | #include "ministd.h" |
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| 23 | |
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| 24 | #ifdef BCM_DEBUG |
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| 25 | #define XDS_DBG(x) BDBG_WRN(x) |
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| 26 | // #define XDS_DBG(x) ((void)0) |
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| 27 | #else |
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| 28 | #define XDS_DBG(x) ((void)0) |
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| 29 | #endif |
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| 30 | |
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| 31 | BDBG_MODULE(xds_ctrl); |
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| 32 | /* |
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| 33 | Summary: |
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| 34 | initialize XDS processing. |
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| 35 | Description: |
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| 36 | Setup XDS processing state. |
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| 37 | */ |
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| 38 | |
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| 39 | |
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| 40 | void xds_ctrl_init(xds_ctrl_t * p_xds /* uninitialized, allocated XDS reference */ |
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| 41 | ) |
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| 42 | { |
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| 43 | memset(p_xds,0,sizeof(xds_ctrl_t)); |
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| 44 | } |
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| 45 | /* |
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| 46 | Summary: |
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| 47 | Install XDS callback. |
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| 48 | Description: |
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| 49 | Install XDS callback. |
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| 50 | */ |
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| 51 | |
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| 52 | |
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| 53 | void xds_ctrl_set_cb(xds_ctrl_t * p_xds, /* uninitialized, allocated XDS reference */ |
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| 54 | xds_callback_t cb) /* XDS callback or NULL */ |
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| 55 | { |
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| 56 | uint32_t flags; |
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| 57 | flags = bos_enter_critical(); |
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| 58 | p_xds->xds_callback = cb; |
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| 59 | bos_exit_critical(flags); |
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| 60 | } |
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| 61 | |
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| 62 | /* |
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| 63 | Summary: |
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| 64 | Feed XDS characters. |
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| 65 | Description: |
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| 66 | Feed line all line 21 field 2 character pairs for XDS processing.. |
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| 67 | */ |
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| 68 | |
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| 69 | void xds_ctrl_feed(xds_ctrl_t * p_xds, unsigned char xds_char_0, unsigned char xds_char_1) |
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| 70 | { |
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| 71 | // XDS_DBG(("XDS(%d, 0x%02x, 0x%02x)\n",p_xds->xds_state,xds_char_0,xds_char_1)); |
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| 72 | if (p_xds->xds_state == eXDS_IDLE) |
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| 73 | { |
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| 74 | switch (xds_char_0) |
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| 75 | { |
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| 76 | case 0x01: case 0x02: p_xds->xds_class = eXDS_CLASS_CURRENT; break; |
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| 77 | case 0x03: case 0x04: p_xds->xds_class = eXDS_CLASS_FUTURE; break; |
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| 78 | case 0x05: case 0x06: p_xds->xds_class = eXDS_CLASS_CHANNEL; break; |
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| 79 | case 0x07: case 0x08: p_xds->xds_class = eXDS_CLASS_MISC; break; |
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| 80 | case 0x09: case 0x0A: p_xds->xds_class = eXDS_CLASS_PUBLIC; break; |
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| 81 | case 0x0B: case 0x0C: p_xds->xds_class = eXDS_CLASS_RESERVED; break; |
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| 82 | case 0x0D: case 0x0E: p_xds->xds_class = eXDS_CLASS_PRIVATE; break; |
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| 83 | default: /* do nothing */break; |
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| 84 | } |
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| 85 | |
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| 86 | switch (xds_char_0) |
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| 87 | { |
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| 88 | case 0x01: case 0x03: case 0x05: case 0x07: |
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| 89 | case 0x09: case 0x0B: case 0x0D: |
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| 90 | p_xds->xds_len = 0; p_xds->xds_checksum = xds_char_0 + xds_char_1; |
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| 91 | |
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| 92 | case 0x02: case 0x04: case 0x06: case 0x08: |
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| 93 | case 0x0a: case 0x0c: case 0x0e: |
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| 94 | |
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| 95 | /* continue start code should not allow type to change */ |
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| 96 | if (p_xds->xds_type != xds_char_1) |
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| 97 | p_xds->xds_len = 0; |
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| 98 | |
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| 99 | p_xds->xds_type = xds_char_1; |
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| 100 | p_xds->xds_state = eXDS_ACTIVE; |
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| 101 | break; |
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| 102 | } |
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| 103 | }else |
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| 104 | { |
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| 105 | /* Not XDS control code */ |
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| 106 | if ((xds_char_0 > 0x0f) && (xds_char_0 < 0x20)) |
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| 107 | { |
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| 108 | p_xds->xds_state = eXDS_IDLE; |
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| 109 | } |
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| 110 | else |
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| 111 | { |
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| 112 | p_xds->xds_checksum += xds_char_0; |
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| 113 | p_xds->xds_checksum += xds_char_1; |
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| 114 | /* check for end control code */ |
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| 115 | if (xds_char_0 == 0x0f) |
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| 116 | { |
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| 117 | /* validate checksum and send */ |
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| 118 | if ((p_xds->xds_checksum & 0x7F) == 0) |
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| 119 | { |
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| 120 | if (p_xds->xds_callback) |
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| 121 | { |
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| 122 | p_xds->xds_callback(p_xds->xds_class,p_xds->xds_type,p_xds->xds_data,p_xds->xds_len); |
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| 123 | }else |
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| 124 | { |
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| 125 | #ifdef BCM_DEBUG |
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| 126 | switch(p_xds->xds_class) |
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| 127 | { |
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| 128 | case eXDS_CLASS_CURRENT: |
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| 129 | if (p_xds->xds_type == eXDS_TYPE_PROG_CONT) |
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| 130 | { |
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| 131 | int i; |
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| 132 | static int adv[2] = { 0,0}; |
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| 133 | |
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| 134 | if ((adv[0] != p_xds->xds_data[0]) && (adv[1] != p_xds->xds_data[1])) |
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| 135 | { |
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| 136 | adv[0] = p_xds->xds_data[0]; |
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| 137 | adv[1] = p_xds->xds_data[1]; |
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| 138 | |
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| 139 | XDS_DBG(("Advisory: ")); |
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| 140 | for (i = 0; i < p_xds->xds_len; ++i) |
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| 141 | { |
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| 142 | XDS_DBG(("0x%02x ",p_xds->xds_data[i])); |
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| 143 | } |
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| 144 | XDS_DBG(("\n")); |
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| 145 | } |
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| 146 | } |
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| 147 | break; |
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| 148 | case eXDS_CLASS_CHANNEL: |
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| 149 | if (p_xds->xds_type == eXDS_CH_CALL_LETTERS) |
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| 150 | { |
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| 151 | p_xds->xds_data[p_xds->xds_len] = 0; |
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| 152 | XDS_DBG(("Channel: %s\n",(char*)p_xds->xds_data)); |
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| 153 | break; |
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| 154 | } |
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| 155 | else if (p_xds->xds_type == eXDS_CH_TSID) |
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| 156 | { |
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| 157 | p_xds->xds_data[p_xds->xds_len] = 0; |
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| 158 | XDS_DBG(("TSID: %s\n",(char*)p_xds->xds_data)); |
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| 159 | break; |
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| 160 | } |
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| 161 | |
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| 162 | case eXDS_CLASS_FUTURE: |
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| 163 | case eXDS_CLASS_MISC: |
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| 164 | case eXDS_CLASS_PUBLIC: |
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| 165 | case eXDS_CLASS_RESERVED: |
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| 166 | case eXDS_CLASS_PRIVATE: |
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| 167 | default: |
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| 168 | XDS_DBG(("XDS(T: %d, C: %d,0x%02x,0x%02x,%d)\n",p_xds->xds_type,p_xds->xds_class,p_xds->xds_data[0],p_xds->xds_data[1],p_xds->xds_len)); |
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| 169 | break; |
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| 170 | } |
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| 171 | #endif /* BCM_DEBUG */ |
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| 172 | } |
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| 173 | } |
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| 174 | p_xds->xds_state = eXDS_IDLE; |
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| 175 | } |
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| 176 | else |
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| 177 | { |
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| 178 | /* add data bytes */ |
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| 179 | if (p_xds->xds_len + 2 < MAX_MSG_LEN) |
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| 180 | { |
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| 181 | p_xds->xds_data[p_xds->xds_len++] = xds_char_0; |
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| 182 | p_xds->xds_data[p_xds->xds_len++] = xds_char_1; |
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| 183 | } |
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| 184 | } |
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| 185 | } |
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| 186 | } |
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| 187 | } |
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| 188 | |
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| 189 | |
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