platform/wavelet3d: improve performance of JTAG-over-TCP

1 files changed, 0 insertions, 300 deletions

diff --git a/platform/wavelet3d/remote_bitbang.cpp b/platform/wavelet3d/remote_bitbang.cpp
deleted file mode 100644
index 5e87233..0000000
--- a/platform/wavelet3d/remote_bitbang.cpp
+++ /dev/null
@@ -1,300 +0,0 @@
-// https://github.com/pulp-platform/riscv-dbg/blob/master/tb/remote_bitbang/remote_bitbang.c
-// See LICENSE.Berkeley for license details.
-
-#include <arpa/inet.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#include <assert.h>
-#include <stdio.h>
-#include <stdlib.h>
-
-#include "remote_bitbang.h"
-
-//Public globals, declared in remote_bitbang.h
-
-int rbs_err;
-
-unsigned char tck;
-unsigned char tms;
-unsigned char tdi;
-unsigned char trstn;
-unsigned char tdo;
-unsigned char quit;
-
-int socket_fd;
-int client_fd;
-
-//static const ssize_t buf_size = 64 * 1024;
-char recv_buf[64 * 1024];
-ssize_t recv_start, recv_end;
-
-int rbs_init(uint16_t port)
-{
-    socket_fd  = 0;
-    client_fd  = 0;
-    recv_start = 0;
-    recv_end   = 0;
-    rbs_err    = 0;
-
-    socket_fd = socket(AF_INET, SOCK_STREAM, 0);
-    if (socket_fd == -1) {
-        fprintf(stderr, "remote_bitbang failed to make socket: %s (%d)\n",
-                strerror(errno), errno);
-        abort();
-    }
-
-    fcntl(socket_fd, F_SETFL, O_NONBLOCK);
-    int reuseaddr = 1;
-    if (setsockopt(socket_fd, SOL_SOCKET, SO_REUSEADDR, &reuseaddr,
-                   sizeof(int)) == -1) {
-        fprintf(stderr, "remote_bitbang failed setsockopt: %s (%d)\n",
-                strerror(errno), errno);
-        abort();
-    }
-
-    struct sockaddr_in addr;
-    memset(&addr, 0, sizeof(addr));
-    addr.sin_family      = AF_INET;
-    addr.sin_addr.s_addr = INADDR_ANY;
-    addr.sin_port        = htons(port);
-
-    if (bind(socket_fd, (struct sockaddr *)&addr, sizeof(addr)) == -1) {
-        fprintf(stderr, "remote_bitbang failed to bind socket: %s (%d)\n",
-                strerror(errno), errno);
-        abort();
-    }
-
-    if (listen(socket_fd, 1) == -1) {
-        fprintf(stderr, "remote_bitbang failed to listen on socket: %s (%d)\n",
-                strerror(errno), errno);
-        abort();
-    }
-
-    socklen_t addrlen = sizeof(addr);
-    if (getsockname(socket_fd, (struct sockaddr *)&addr, &addrlen) == -1) {
-        fprintf(stderr, "remote_bitbang getsockname failed: %s (%d)\n",
-                strerror(errno), errno);
-        abort();
-    }
-
-    tck   = 1;
-    tms   = 1;
-    tdi   = 1;
-    trstn = 1;
-    quit  = 0;
-
-    fprintf(stderr, "JTAG remote bitbang server is ready\n");
-    fprintf(stderr, "Listening on port %d\n", ntohs(addr.sin_port));
-    return 1;
-}
-
-void rbs_accept()
-{
-    fprintf(stderr, "Attempting to accept client socket\n");
-    int again = 1;
-    while (again != 0) {
-        client_fd = accept(socket_fd, NULL, NULL);
-        if (client_fd == -1) {
-            if (errno == EAGAIN) {
-                // No client waiting to connect right now.
-            } else {
-                fprintf(stderr, "failed to accept on socket: %s (%d)\n",
-                        strerror(errno), errno);
-                again = 0;
-                abort();
-            }
-        } else {
-            fcntl(client_fd, F_SETFL, O_NONBLOCK);
-            fprintf(stderr, "Accepted successfully.\n");
-            again = 0;
-        }
-    }
-}
-
-void rbs_tick(unsigned char *jtag_tck, unsigned char *jtag_tms,
-              unsigned char *jtag_tdi, unsigned char *jtag_trstn,
-              unsigned char jtag_tdo)
-{
-    if (client_fd > 0) {
-        tdo = jtag_tdo;
-        rbs_execute_command();
-    } else {
-        rbs_accept();
-    }
-
-    *jtag_tck   = tck;
-    *jtag_tms   = tms;
-    *jtag_tdi   = tdi;
-    *jtag_trstn = trstn;
-}
-
-void rbs_reset()
-{
-    trstn = 0;
-}
-
-void rbs_set()
-{
-    trstn = 1;
-}
-
-void rbs_set_pins(char _tck, char _tms, char _tdi)
-{
-    tck = _tck;
-    tms = _tms;
-    tdi = _tdi;
-}
-
-void rbs_execute_command()
-{
-    char command;
-    int again = 1;
-    while (again) {
-        ssize_t num_read = read(client_fd, &command, sizeof(command));
-        if (num_read == -1) {
-            if (errno == EAGAIN) {
-                // We'll try again the next call.
-                if (VERBOSE)
-                    fprintf(
-                        stderr,
-                        "Received no command. Will try again on the next call\n");
-            } else {
-                fprintf(stderr,
-                        "remote_bitbang failed to read on socket: %s (%d)\n",
-                        strerror(errno), errno);
-                again = 0;
-                abort();
-            }
-        } else if (num_read == 0) {
-            fprintf(stderr, "No command received. Stopping further reads.\n");
-            close(client_fd);
-            client_fd = -1;
-            // again = 1;
-            return;
-        } else {
-            again = 0;
-        }
-    }
-
-    int dosend = 0;
-
-    char tosend = '?';
-
-    switch (command) {
-    case 'B':
-        if (VERBOSE)
-            fprintf(stderr, "*BLINK*\n");
-        break;
-    case 'b':
-        if (VERBOSE)
-            fprintf(stderr, "blink off\n");
-        break;
-    case 'r':
-        if (VERBOSE)
-            fprintf(stderr, "r-reset\n");
-        rbs_set(); //r-reset command deasserts TRST. See: openocd/blob/master/doc/manual/jtag/drivers/remote_bitbang.txt
-        break; 
-    case 's':
-        if (VERBOSE)
-            fprintf(stderr, "s-reset\n");
-        rbs_set(); //s-reset command deasserts TRST. See: openocd/blob/master/doc/manual/jtag/drivers/remote_bitbang.txt
-        break;
-    case 't':
-        if (VERBOSE)
-            fprintf(stderr, "t-reset\n");
-        rbs_reset(); //t-reset command asserts TRST. See: openocd/blob/master/doc/manual/jtag/drivers/remote_bitbang.txt
-        break;
-    case 'u':
-        if (VERBOSE)
-            fprintf(stderr, "u-reset\n");
-        rbs_reset(); //u-reset command asserts TRST. See: openocd/blob/master/doc/manual/jtag/drivers/remote_bitbang.txt
-        break;
-    case '0':
-        if (VERBOSE)
-            fprintf(stderr, "Write 0 0 0\n");
-        rbs_set_pins(0, 0, 0);
-        break;
-    case '1':
-        if (VERBOSE)
-            fprintf(stderr, "Write 0 0 1\n");
-        rbs_set_pins(0, 0, 1);
-        break;
-    case '2':
-        if (VERBOSE)
-            fprintf(stderr, "Write 0 1 0\n");
-        rbs_set_pins(0, 1, 0);
-        break;
-    case '3':
-        if (VERBOSE)
-            fprintf(stderr, "Write 0 1 1\n");
-        rbs_set_pins(0, 1, 1);
-        break;
-    case '4':
-        if (VERBOSE)
-            fprintf(stderr, "Write 1 0 0\n");
-        rbs_set_pins(1, 0, 0);
-        break;
-    case '5':
-        if (VERBOSE)
-            fprintf(stderr, "Write 1 0 1\n");
-        rbs_set_pins(1, 0, 1);
-        break;
-    case '6':
-        if (VERBOSE)
-            fprintf(stderr, "Write 1 1 0\n");
-        rbs_set_pins(1, 1, 0);
-        break;
-    case '7':
-        if (VERBOSE)
-            fprintf(stderr, "Write 1 1 1\n");
-        rbs_set_pins(1, 1, 1);
-        break;
-    case 'R':
-        if (VERBOSE)
-            fprintf(stderr, "Read req\n");
-        dosend = 1;
-        tosend = tdo ? '1' : '0';
-        break;
-    case 'Q':
-        if (VERBOSE)
-            fprintf(stderr, "Quit req\n");
-        quit = 1;
-        break;
-    default:
-        fprintf(stderr, "remote_bitbang got unsupported command '%c'\n",
-                command);
-    }
-    if (dosend) {
-        while (1) {
-            ssize_t bytes = write(client_fd, &tosend, sizeof(tosend));
-            if (bytes == -1) {
-                fprintf(stderr, "failed to write to socket: %s (%d)\n",
-                        strerror(errno), errno);
-                abort();
-            }
-            if (bytes > 0) {
-                break;
-            }
-        }
-    }
-
-    if (quit) {
-        fprintf(stderr, "Remote end disconnected\n");
-        close(client_fd);
-        client_fd = 0;
-    }
-}
-
-unsigned char rbs_done()
-{
-    return quit;
-}
-
-int rbs_exit_code()
-{
-    return rbs_err;
-}