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JTAGVPI: remove it in favor of remote bitbang

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This commit is contained in:
Megan Wachs
2018-03-07 10:53:49 -08:00
parent 64b707cbb6
commit 42e614550c
3 changed files with 0 additions and 733 deletions
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csrc/jtag_vpi.c
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@ -1,430 +0,0 @@
/*
* TCP/IP controlled VPI JTAG Interface.
* Based on Julius Baxter's work on jp_vpi.c
*
* Copyright (C) 2012 Franck Jullien, <franck.jullien@gmail.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the names of the copyright holders nor the names of any
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <arpa/inet.h>
#include <vpi_user.h>
// Calling bind with port 0 will return a socket bound to an unused port.
#define RSP_SERVER_PORT 0
#define XFERT_MAX_SIZE 512
const char * cmd_to_string[] = {"CMD_RESET",
"CMD_TMS_SEQ",
"CMD_SCAN_CHAIN"};
struct vpi_cmd {
int cmd;
unsigned char buffer_out[XFERT_MAX_SIZE];
unsigned char buffer_in[XFERT_MAX_SIZE];
int length;
int nb_bits;
};
int listenfd = 0;
int connfd = 0;
int init_jtag_server(int port)
{
struct sockaddr_in serv_addr;
int flags;
listenfd = socket(AF_INET, SOCK_STREAM, 0);
memset(&serv_addr, '0', sizeof(serv_addr));
serv_addr.sin_family = AF_INET;
serv_addr.sin_addr.s_addr = htonl(INADDR_ANY);
serv_addr.sin_port = htons(port);
bind(listenfd, (struct sockaddr*)&serv_addr, sizeof(serv_addr));
listen(listenfd, 10);
socklen_t socklen = sizeof(serv_addr);
if (getsockname(listenfd, (struct sockaddr *)&serv_addr, &socklen) == -1) {
perror("init_jtag_server");
fflush(stderr);
exit(1);
} else {
printf("Listening on port %d\n", ntohs(serv_addr.sin_port));
fflush(stdout);
}
printf("Waiting for client connection...");
fflush(stdout);
connfd = accept(listenfd, (struct sockaddr*)NULL, NULL);
printf("ok\n");
fflush(stdout);
flags = fcntl(listenfd, F_GETFL, 0);
fcntl(listenfd, F_SETFL, flags | O_NONBLOCK);
return 0;
}
// See if there's anything on the FIFO for us
void check_for_command(char *userdata)
{
vpiHandle systfref, args_iter, argh;
struct t_vpi_value argval;
struct vpi_cmd vpi;
int nb;
int loaded_words = 0;
(void)userdata;
// Get the command from TCP server
if(!connfd)
init_jtag_server(RSP_SERVER_PORT);
nb = read(connfd, &vpi, sizeof(struct vpi_cmd));
if (((nb < 0) && (errno == EAGAIN)) || (nb == 0)) {
// Nothing in the fifo this time, let's return
return;
} else {
if (nb < 0) {
// some sort of error
perror("check_for_command");
exit(1);
}
}
/************* vpi.cmd to VPI ******************************/
// Obtain a handle to the argument list
systfref = vpi_handle(vpiSysTfCall, NULL);
// Now call iterate with the vpiArgument parameter
args_iter = vpi_iterate(vpiArgument, systfref);
// get a handle on the variable passed to the function
argh = vpi_scan(args_iter);
// now store the command value back in the sim
argval.format = vpiIntVal;
// Now set the command value
vpi_get_value(argh, &argval);
argval.value.integer = (uint32_t)vpi.cmd;
// And vpi_put_value() it back into the sim
vpi_put_value(argh, &argval, NULL, vpiNoDelay);
/************* vpi.length to VPI ******************************/
// now get a handle on the next object (memory array)
argh = vpi_scan(args_iter);
// now store the command value back in the sim
argval.format = vpiIntVal;
// Now set the command value
vpi_get_value(argh, &argval);
argval.value.integer = (uint32_t)vpi.length;
// And vpi_put_value() it back into the sim
vpi_put_value(argh, &argval, NULL, vpiNoDelay);
/************* vpi.nb_bits to VPI ******************************/
// now get a handle on the next object (memory array)
argh = vpi_scan(args_iter);
// now store the command value back in the sim
argval.format = vpiIntVal;
// Now set the command value
vpi_get_value(argh, &argval);
argval.value.integer = (uint32_t)vpi.nb_bits;
// And vpi_put_value() it back into the sim
vpi_put_value(argh, &argval, NULL, vpiNoDelay);
/*****************vpi.buffer_out to VPI ********/
// now get a handle on the next object (memory array)
argh = vpi_scan(args_iter);
vpiHandle array_word;
// Loop to load the words
while (loaded_words < vpi.length) {
// now get a handle on the current word we want in the array that was passed to us
array_word = vpi_handle_by_index(argh, loaded_words);
if (array_word != NULL) {
argval.value.integer = (uint32_t)vpi.buffer_out[loaded_words];
// And vpi_put_value() it back into the sim
vpi_put_value(array_word, &argval, NULL, vpiNoDelay);
} else
return;
loaded_words++;
}
/*******************************************/
// Cleanup and return
vpi_free_object(args_iter);
}
void send_result_to_server(char *userdata)
{
vpiHandle systfref, args_iter, argh;
struct t_vpi_value argval;
ssize_t n;
struct vpi_cmd vpi;
int32_t length;
int sent_words;
vpiHandle array_word;
(void)userdata;
// Now setup the handles to verilog objects and check things
// Obtain a handle to the argument list
systfref = vpi_handle(vpiSysTfCall, NULL);
// Now call iterate with the vpiArgument parameter
args_iter = vpi_iterate(vpiArgument, systfref);
// get a handle on the length variable
argh = vpi_scan(args_iter);
argval.format = vpiIntVal;
// get the value for the length object
vpi_get_value(argh, &argval);
// now set length
length = argval.value.integer;
// now get a handle on the next object (memory array)
argh = vpi_scan(args_iter);
// check we got passed a memory (array of regs)
if (!((vpi_get(vpiType, argh) == vpiMemory)
#ifdef MODELSIM_VPI
|| (vpi_get(vpiType, argh) == vpiRegArray)
#endif
#ifdef VCS_VPI
|| (vpi_get(vpiType, argh) == vpiRegArray)
#endif
)) {
vpi_printf("jtag_vpi: ERROR: did not pass a memory to get_command_block_data\n");
vpi_printf("jtag_vpi: ERROR: was passed type %d\n", (int)vpi_get(vpiType, argh));
return;
}
// check the memory we're writing into is big enough
if (vpi_get(vpiSize, argh) < length ) {
vpi_printf("jtag_vpi: ERROR: buffer passed to get_command_block_data too small. size is %d words, needs to be %d\n",
vpi_get(vpiSize, argh), length);
return;
}
// Loop to load the words
sent_words = 0;
while (sent_words < length) {
// Get a handle on the current word we want in the array that was passed to us
array_word = vpi_handle_by_index(argh, sent_words);
if (array_word != NULL) {
vpi_get_value(array_word, &argval);
vpi.buffer_in[sent_words] = (uint32_t) argval.value.integer;
} else
return;
sent_words++;
}
n = write(connfd, &vpi, sizeof(struct vpi_cmd));
if (n < (ssize_t)sizeof(struct vpi_cmd))
vpi_printf("jtag_vpi: ERROR: error during write to server\n");
// Cleanup and return
vpi_free_object(args_iter);
}
void register_check_for_command(void)
{
s_vpi_systf_data data = {
vpiSysTask,
0,
"$check_for_command",
(void *)check_for_command,
0,
0,
0
};
vpi_register_systf(&data);
}
void register_send_result_to_server(void)
{
s_vpi_systf_data data = {
vpiSysTask,
0,
"$send_result_to_server",
(void *)send_result_to_server,
0,
0,
0
};
vpi_register_systf(&data);
}
void sim_reset_callback(void)
{
// nothing to do!
}
void setup_reset_callbacks(void)
{
// here we setup and install callbacks for
// the setup and management of connections to
// the simulator upon simulation start and
// reset
static s_vpi_time time_s = {vpiScaledRealTime, 0, 0, 0};
static s_vpi_value value_s = {.format = vpiBinStrVal};
static s_cb_data cb_data_s = {
cbEndOfReset, // or start of simulation - initing socket fds etc
(void *)sim_reset_callback,
NULL,
&time_s,
&value_s,
0,
NULL
};
cb_data_s.obj = NULL; /* trigger object */
cb_data_s.user_data = NULL;
// actual call to register the callback
vpi_register_cb(&cb_data_s);
}
void sim_endofcompile_callback(void)
{
}
void setup_endofcompile_callbacks(void)
{
// here we setup and install callbacks for
// simulation finish
static s_vpi_time time_s = {vpiScaledRealTime, 0, 0, 0};
static s_vpi_value value_s = {.format = vpiBinStrVal};
static s_cb_data cb_data_s = {
cbEndOfCompile, // end of compile
(void *)sim_endofcompile_callback,
NULL,
&time_s,
&value_s,
0,
NULL
};
cb_data_s.obj = NULL; /* trigger object */
cb_data_s.user_data = NULL;
// actual call to register the callback
vpi_register_cb(&cb_data_s);
}
void sim_finish_callback(void)
{
if(connfd)
printf("Closing RSP server\n");
close(connfd);
close(listenfd);
}
void setup_finish_callbacks(void)
{
// here we setup and install callbacks for
// simulation finish
static s_vpi_time time_s = {vpiScaledRealTime, 0, 0, 0};
static s_vpi_value value_s = {.format = vpiBinStrVal};
static s_cb_data cb_data_s = {
cbEndOfSimulation, // end of simulation
(void *)sim_finish_callback,
NULL,
&time_s,
&value_s,
0,
NULL
};
cb_data_s.obj = NULL; /* trigger object */
cb_data_s.user_data = NULL;
// actual call to register the callback
vpi_register_cb(&cb_data_s);
}
#ifndef VCS_VPI
// Register the new system task here
void (*vlog_startup_routines[])(void) = {
#ifdef CDS_VPI
// this installs a callback on simulator reset - something which
// icarus does not do, so we only do it for cadence currently
setup_reset_callbacks,
#endif
setup_endofcompile_callbacks,
setup_finish_callbacks,
register_check_for_command,
register_send_result_to_server,
0 // last entry must be 0
};
// Entry point for testing development of the vpi functions
int main(int argc, char *argv[])
{
(void)argc;
(void)argv;
return 0;
}
#endif