FreeCalypso > hg > freecalypso-sw
view rvinterf/libasync/interf.c @ 923:10b4bed10192
gsm-fw/L1: fix for the DSP patch corruption bug
The L1 code we got from the LoCosto fw contains a feature for DSP CPU load
measurement. This feature is a LoCosto-ism, i.e., not applicable to earlier
DBB chips (Calypso) with their respective earlier DSP ROMs. Most of the
code dealing with that feature is conditionalized as #if (DSP >= 38),
but one spot was missed, and the MCU code was writing into an API word
dealing with this feature. In TCS211 this DSP API word happens to be
used by the DSP code patch, hence that write was corrupting the patched
DSP code.
author | Mychaela Falconia <falcon@ivan.Harhan.ORG> |
---|---|
date | Mon, 19 Oct 2015 17:13:56 +0000 |
parents | 40b8557b9d04 |
children |
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/* * This module implements the link to rvinterf. */ #include <sys/types.h> #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include "localsock.h" extern int sock; u_char rvi_msg[LOCALSOCK_MAX_MSG]; int rvi_msg_len; static int rx_state, rx_left; static u_char *rx_ptr; void localsock_prep_for_length_rx() { rx_state = 0; rx_ptr = rvi_msg; rx_left = 2; } static void prep_for_message_rx() { rx_state = 1; rx_ptr = rvi_msg; rx_left = rvi_msg_len; } void process_msg_from_rvinterf() { switch (rvi_msg[0]) { case RVI2CLI_PKT_FROM_TARGET: process_pkt_from_target(); return; case RVI2CLI_LOCAL_CMD_RESP: if (rvi_msg_len < 2) goto bad; if (rvi_msg[1] == '+') return; tty_cleanup(); fprintf(stderr, "Error from rvinterf: %.*s\n", rvi_msg_len - 1, rvi_msg + 1); exit(1); default: bad: tty_cleanup(); fprintf(stderr, "Error: unexpected message type %02X from rvinterf\n", rvi_msg[0]); exit(1); } } void handle_rvinterf_input() { int cc; cc = read(sock, rx_ptr, rx_left); if (cc <= 0) { tty_cleanup(); perror("read from rvinterf socket"); exit(1); } rx_ptr += cc; rx_left -= cc; if (rx_left) return; /* got the thing, process it */ if (rx_state) { process_msg_from_rvinterf(); localsock_prep_for_length_rx(); } else { rvi_msg_len = rvi_msg[0] << 8 | rvi_msg[1]; if (rvi_msg_len < 1 || rvi_msg_len > LOCALSOCK_MAX_MSG) { tty_cleanup(); fprintf(stderr, "Invalid length from rvinterf: %02X%02X\n", rvi_msg[0], rvi_msg[1]); exit(1); } prep_for_message_rx(); } } void send_pkt_to_target(pkt, pktlen) u_char *pkt; { u_char hdrbuf[3]; int len1; len1 = pktlen + 1; hdrbuf[0] = len1 >> 8; hdrbuf[1] = len1 & 0xFF; hdrbuf[2] = CLI2RVI_PKT_TO_TARGET; write(sock, hdrbuf, 3); write(sock, pkt, pktlen); }