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annotate pircharge/pktsort.c @ 303:3baaefa1e229

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dsample-fw-disasm: Rx up/down functions located and analysed
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 06 Oct 2019 00:36:11 +0000
parents 84a4f6ef2d28
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
228
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1 /*
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2 * Here we sort out incoming packets from the target relayed via rvinterf.
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3 */
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4
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5 #include <sys/types.h>
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6 #include <stdio.h>
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7 #include <string.h>
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8 #include <strings.h>
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9 #include <stdlib.h>
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10 #include <rvinterf/pktmux.h>
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11 #include <rvinterf/limits.h>
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12 #include <rvinterf/localsock.h>
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13 #include <rvinterf/localtypes.h>
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14 #include <rvinterf/etm.h>
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15 #include <rvinterf/exitcodes.h>
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16
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17 extern u_char rvi_msg[];
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18 extern int rvi_msg_len;
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19
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20 void
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21 print_rv_trace()
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22 {
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23 char fmtbuf[MAX_PKT_FROM_TARGET*8]; /* size it generously */
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24 int i, c;
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25 char *dp;
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26
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27 dp = fmtbuf;
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28 strcpy(dp, "RV ");
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29 dp += 3;
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30 /* the SWE static ID is sent MSB first */
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31 for (i = 1; i <= 4; i++) {
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32 sprintf(dp, "%02X", rvi_msg[i+1]);
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33 dp += 2;
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34 }
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35 /* severity level */
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36 sprintf(dp, " %d ", rvi_msg[6]);
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37 dp = index(dp, '\0');
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38 for (i = 7; i < rvi_msg_len; i++) {
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39 c = rvi_msg[i];
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40 if (c & 0x80) {
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41 *dp++ = 'M';
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42 *dp++ = '-';
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43 c &= 0x7F;
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44 }
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45 if (c < 0x20) {
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46 *dp++ = '^';
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47 *dp++ = c + '@';
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48 } else if (c == 0x7F) {
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49 *dp++ = '^';
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50 *dp++ = '?';
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51 } else
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52 *dp++ = c;
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53 }
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54 *dp = '\0';
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55 printf("%s\n", fmtbuf);
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56 }
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57
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58 void
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59 rvt_packet_rx()
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60 {
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61 u32 useid;
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62
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63 if (rvi_msg_len < 7) {
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64 fprintf(stderr, "Error: rvinterf sent us an invalid RVT msg\n");
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65 exit(ERROR_RVINTERF);
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66 }
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67 print_rv_trace();
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68 useid = rvi_msg[2] << 24 | rvi_msg[3] << 16 | rvi_msg[4] << 8
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69 | rvi_msg[5];
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70 if (useid != 0x000A0010)
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71 return;
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72 if (rvi_msg_len != 22)
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73 return;
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74 if (strncmp(rvi_msg + 7, "IQ EXT: ADC End", 15))
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75 return;
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76 adc_end_process();
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77 }
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78
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79 void
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80 process_pkt_from_target()
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81 {
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82 switch (rvi_msg[1]) {
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83 case RVT_RV_HEADER:
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84 rvt_packet_rx();
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85 return;
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86 case RVT_TM_HEADER:
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87 etm_packet_rx();
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88 return;
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89 default:
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90 fprintf(stderr, "unexpected fwd of MUX %02X from rvinterf\n",
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91 rvi_msg[1]);
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92 exit(ERROR_RVINTERF);
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93 }
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94 }