FreeCalypso > hg > freecalypso-tools

annotate rvinterf/old/libg23/fmtdispatch.c @ 1014:961efadd530a default tip

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fc-shell TCH DL handler: add support for CSD modes TCH DL capture mechanism in FC Tourmaline firmware has been extended to support CSD modes in addition to speech - add the necessary support on the host tools side. It needs to be noted that this mechanism in its present state does NOT provide the debug utility value that was sought: as we learned only after the code was implemented, TI's DSP has a misfeature in that the buffer we are reading (a_dd_0[]) is zeroed out when the IDS block is enabled, i.e., we are reading all zeros and not the real DL bits we were after. But since the code has already been written, we are keeping it - perhaps we can do some tests with IDS disabled.
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 26 Nov 2024 06:27:43 +0000
parents 4c601097d23f
children
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0
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Mychaela Falconia <falcon@freecalypso.org>
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1 /*
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2 * This libg23 module exports the format_g23_packet() function, which
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
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3 * validates the packet, then dispatches it to format_g23_trace(),
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4 * format_g23_sysprim() or format_g23_psprim() as appropriate, or
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
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5 * prints it in raw hex if malformed.
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6 */
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7
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8 #include <sys/types.h>
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9 #include <stdio.h>
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10 #include <string.h>
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11 #include <strings.h>
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12
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13 static int
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14 basic_checks(rxpkt, rxpkt_len)
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Mychaela Falconia <falcon@freecalypso.org>
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15 u_char *rxpkt;
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16 {
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17 int i, c;
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18
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19 if (rxpkt_len < 17)
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20 return(0);
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21 /* check version bits in the header byte */
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22 if ((rxpkt[1] & 0xC0) != 0x80)
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23 return(0);
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24 /* check the length */
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25 c = rxpkt[2] | rxpkt[3] << 8;
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26 if (c + 4 != rxpkt_len)
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27 return(0);
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28 /* ensure that the "from" and "to" are printable ASCII */
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29 for (i = 8; i < 16; i++) {
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30 c = rxpkt[i];
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31 if (c < ' ' || c > '~')
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32 return(0);
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33 }
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34 /* basic checks pass */
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35 return(1);
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36 }
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37
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38 static int
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39 psprim_extra_checks(rxpkt, rxpkt_len)
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40 u_char *rxpkt;
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41 {
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42 int i, c;
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43
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44 if (rxpkt_len < 24)
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45 return(0);
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46 /* "original rcvr" field needs to be printable ASCII */
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47 for (i = 16; i < 20; i++) {
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48 c = rxpkt[i];
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49 if (c < ' ' || c > '~')
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50 return(0);
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51 }
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52 /* checks pass */
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53 return(1);
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54 }
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55
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56 static void
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57 print_unknown_bin(rxpkt, rxpkt_len, outbuf)
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58 u_char *rxpkt;
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59 char *outbuf;
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60 {
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61 int i;
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62 char *dp;
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63
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64 dp = outbuf;
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65 strcpy(dp, "GPF UNK:");
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66 dp += 8;
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67 for (i = 1; i < rxpkt_len; i++) {
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68 sprintf(dp, " %02X", rxpkt[i]);
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69 dp += 3;
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70 }
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71 *dp = '\0';
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72 }
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73
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74 static void
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75 print_old_ascii(rxpkt, rxpkt_len, outbuf)
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76 u_char *rxpkt;
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77 char *outbuf;
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78 {
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79 char *dp;
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80 int txtlen = rxpkt_len - 1;
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81
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82 dp = outbuf;
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83 strcpy(dp, "GPF ASC: ");
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84 dp += 9;
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85 bcopy(rxpkt + 1, dp, txtlen);
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86 dp += txtlen;
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87 *dp = '\0';
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88 }
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89
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90 static int
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91 is_old_ascii(rxpkt, rxpkt_len)
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92 u_char *rxpkt;
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93 {
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94 int i, c;
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95
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96 for (i = 1; i < rxpkt_len; i++) {
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97 c = rxpkt[i];
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98 if (c < ' ' || c > '~')
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99 return(0);
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100 }
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101 return(1);
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102 }
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103
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104 static void
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105 print_malformed(rxpkt, rxpkt_len, outbuf)
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Mychaela Falconia <falcon@freecalypso.org>
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106 u_char *rxpkt;
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107 char *outbuf;
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108 {
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109 if (is_old_ascii(rxpkt, rxpkt_len))
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110 print_old_ascii(rxpkt, rxpkt_len, outbuf);
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Mychaela Falconia <falcon@freecalypso.org>
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111 else
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112 print_unknown_bin(rxpkt, rxpkt_len, outbuf);
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Mychaela Falconia <falcon@freecalypso.org>
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113 }
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114
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115 void
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diff changeset
116 format_g23_packet(rxpkt, rxpkt_len, outbuf)
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
117 u_char *rxpkt;
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
118 char *outbuf;
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
119 {
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
120 if (!basic_checks(rxpkt, rxpkt_len)) {
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
121 print_malformed(rxpkt, rxpkt_len, outbuf);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
122 return;
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
123 }
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
124 /* dispatch by type */
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
125 switch (rxpkt[1] & 0x30) {
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
126 case 0x10:
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
127 /* PS primitive */
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
128 if (psprim_extra_checks(rxpkt, rxpkt_len))
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
129 format_g23_psprim(rxpkt, rxpkt_len, outbuf);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
130 else
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
131 print_malformed(rxpkt, rxpkt_len, outbuf);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
132 return;
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
133 case 0x20:
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
134 /* trace */
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
135 format_g23_trace(rxpkt, rxpkt_len, outbuf);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
136 return;
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
137 case 0x30:
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
138 /* system primitive */
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
139 format_g23_sysprim(rxpkt, rxpkt_len, outbuf);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
140 return;
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
141 default:
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
142 print_malformed(rxpkt, rxpkt_len, outbuf);
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
143 }
e7502631a0f9 initial import from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
144 }