/* menu_interrupts.cpp: user sub menu

 Copyright (c) 2018, Joerg Hoppe
 j_hoppe@t-online.de, www.retrocmp.com

 Permission is hereby granted, free of charge, to any person obtaining a
 copy of this software and associated documentation files (the "Software"),
 to deal in the Software without restriction, including without limitation
 the rights to use, copy, modify, merge, publish, distribute, sublicense,
 and/or sell copies of the Software, and to permit persons to whom the
 Software is furnished to do so, subject to the following conditions:

 The above copyright notice and this permission notice shall be included in
 all copies or substantial portions of the Software.

 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 JOERG HOPPE BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

 16-Nov-2018  JH      created
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>

#include "utils.hpp"
#include "logger.hpp"
#include "inputline.hpp"
#include "mcout.h"
#include "application.hpp" // own

#include "pru.hpp"
//#include "gpios.hpp"
#include "buslatches.hpp"
#include "qunibus.h"

#include "memoryimage.hpp"
#include "qunibusadapter.hpp"
#include "testcontroller.hpp"

void application_c::menu_interrupts(const char *menu_code) 
{
    bool show_help = true; // show cmds on first screen, then only on error or request
    bool active = false; // 1 if PRU executes slave&master logic
    bool ready;
    bool test_loaded;
    char *s_choice;
    char s_opcode[256], s_param[5][256];
    int n_fields;

    testcontroller_c *test_controller = new testcontroller_c();
    test_controller->enabled.value = true;

    // These test need active PRUs
    // and an PDP-11 CPU as Arbitrator
    hardware_startup(pru_c::PRUCODE_EMULATION);
    buslatches.output_enable(true);
    // CPU required
    qunibus->set_arbitrator_active(true);

    ready = false;
    test_loaded = false;
    while (!ready) {
		// no menu display when reading script
        if (show_help && !script_active()) {
            show_help = false; // only once
            printf("\n");
            printf("*** Test of " QUNIBUS_NAME " interrupts.\n");
#if defined(UNIBUS)
            printf("    BR*/BG* Bus Arbitration needs a PDP-11 CPU acting as Bus Arbitrator.\n");
#elif defined(QBUS)
            printf("	 IRQ*/IAK Bus Arbitration needs a PDP-11 CPU acting as Bus Arbitrator.\n");
#endif
            if (emulated_memory_start_addr > emulated_memory_end_addr)
                printf("    " QUNIBONE_NAME " does not emulate memory.\n");
            else
                printf("   " QUNIBONE_NAME " emulates memory from %s to %s.\n",
                       qunibus->addr2text(emulated_memory_start_addr), qunibus->addr2text(emulated_memory_end_addr));
            if (!active) {
                printf("***\n");
                printf("*** Starting full " QUNIBUS_NAME " master/slave logic on PRU\n");
                printf("***\n");
                qunibusadapter->enabled.set(true);
                active = true;
            }
            printf("m                    emulate all missing memory\n");
            printf("e <addr>             EXAMINE the word at <addr>. [octal]\n");
            printf("d <addr> <val>       DEPOSIT <val> into <addr> [octal]\n");
            printf("ll <filename>        Load test program from MACRO-11 listing\n");
            if (test_loaded) {
                printf(
                    "i <level> <vector>   Issue interrupt at priority <level> to <<vector> [octal]\n");
                printf("                     <level> = 0..7, <vector> = 0,4,10,...,374\n");
                printf(
                    "                     Then interrupts cause print-out, and	processor priority\n");
                printf("                     can be set with keys 0..7.\n");
                printf("                     Example:\n");
                printf("                       \"i 5 164\" calls vector 164 at level 5.\n");
                printf(
                    "                       If processor level < 5, INTR is accepted, a message is printed.\n");
                printf("                       Else INTR is pending until level is lowered.\n");
                printf("				     <level> = 0..7, <vector> = 0,4,10,...,374\n");
                printf(
                    "i <level> <slot> <vector>  Variant, additional a backplane slot for priority\n");
                printf("                     within same level group is given\n");
                printf("dma <channel> <from> <to> <data>  (addr & data word octal)\n");
                printf(
                    "	                 DEPOSIT memory range. Non-blocking, subsequent script commands\n");
                printf(
                    "                     are executed in parallel. <slot> is backplane slot for priority\n");
                printf("                      <channel> 0..%u possible.\n",
                       (unsigned) test_controller->dma_channel_count);
            }
            printf("dbg c|s|f            Debug log: Clear, Show on console, dump to File.\n");
#if defined(UNIBUS)
            printf("pwr                  Simulate UNIBUS power cycle (ACLO/DCLO)\n");
#elif defined(QBUS)
			printf("h <1|0>              Set/release QBUS HALT, like front panel toggle switch\n");
            printf("pwr                  Simulate QBUS power cycle (POK/DCOK) like front panel RESTART\n");
#endif
            printf("q                    Quit\n");
        }
        s_choice = getchoice(menu_code);

        printf("\n");
        n_fields = sscanf(s_choice, "%s %s %s %s %s %s", s_opcode, s_param[0], s_param[1],
                          s_param[2], s_param[3], s_param[4]);
        if (!strcasecmp(s_opcode, "q")) {
            ready = true;
        } else if (!strcasecmp(s_opcode, "pwr")) {
            qunibus->powercycle();
#if defined(QBUS)				
		} else if (!strcasecmp(s_opcode, "h") && n_fields == 2) {
			uint16_t _active ;
			qunibus->parse_word(s_param[0], &_active) ;				
			qunibus->set_halt(_active) ;
#endif				
        } else if (!strcasecmp(s_opcode, "m") && n_fields == 1) {
            emulate_memory();
        } else if (!strcasecmp(s_opcode, "e") && n_fields == 2) {
            uint32_t cur_addr;
            uint16_t wordbuffer;
            qunibus->parse_addr(s_param[0], &cur_addr);
            bool timeout = !qunibus->dma(true, QUNIBUS_CYCLE_DATI, cur_addr, &wordbuffer, 1);
            if (timeout)
                printf("Bus timeout at %s.\n", qunibus->addr2text(cur_addr));
            else
                printf("EXAM %s -> %06o\n", qunibus->addr2text(cur_addr), wordbuffer);
        } else if (!strcasecmp(s_opcode, "d") && n_fields == 3) {
            uint32_t cur_addr;
            uint16_t wordbuffer;
            qunibus->parse_addr(s_param[0], &cur_addr);
            qunibus->parse_word(s_param[1], &wordbuffer);
            bool timeout = !qunibus->dma(true, QUNIBUS_CYCLE_DATO, cur_addr, &wordbuffer, 1);
            if (timeout)
                printf("Bus timeout at %s.\n", qunibus->addr2text(cur_addr));
            else
                printf("DEPOSIT %s <- %06o\n", qunibus->addr2text(cur_addr), wordbuffer);
        } else if (!strcasecmp(s_opcode, "ll") && n_fields == 2) {
            codelabel_map_c codelabels;
            uint32_t start_addr, end_addr;
            bool timeout;
            test_loaded = false;
            printf("Loading memory content from MACRO-11 listing %s\n", s_param[0]);
            membuffer->init();
            bool load_ok = membuffer->load_macro11_listing(s_param[0], &codelabels);
            if (!load_ok) {
                printf("File load failed, aborting.\n");
                continue;
            }
            membuffer->get_addr_range(&start_addr, &end_addr);
            printf("Loaded %u words, writing " QUNIBUS_NAME " memory[%s:%s].\n",
                   membuffer->get_word_count(), qunibus->addr2text(start_addr), qunibus->addr2text(end_addr));
            qunibus->mem_write(membuffer->data.words, start_addr, end_addr, &timeout);
            if (timeout)
                printf("Memory write failed with " QUNIBUS_NAME " timeout, aborting.\n");
            else {
                if (codelabels.is_defined("start"))
                    printf("Start program manually on PDP-11 console, entry address is %s.\n",
                           qunibus->addr2text(codelabels.get_address("start")));
                else
                    printf("Start program manually on PDP-11 console (entry address not found).\n");
                test_loaded = true;
            }
        } else if (test_loaded && !strcasecmp(s_opcode, "i") && n_fields >= 3 && n_fields <= 4) {

            uint8_t priority_slot = 16; // default
            uint8_t level;
            uint16_t vector;
            if (!qunibus->parse_level(s_param[0], &level))
                continue;
            if (n_fields == 3) { // i <level> <vector>
                if (!qunibus->parse_vector(s_param[1], 0374, &vector)) // artificial limit, still far to big
                    continue;
            } else if (n_fields == 4) { // i <level> <slot> <vector>
                if (!qunibus->parse_slot(s_param[1], &priority_slot))
                    continue;
                if (!qunibus->parse_vector(s_param[2], 0374, &vector)) // artificial limit, still far to big
                    continue;
            }
            // use request from testcontroller
            unsigned level_idx = level - 4; // 4,5,6,7 -> 0,1,2,3
            intr_request_c *intr_request = test_controller->intr_request[priority_slot][level_idx];
            intr_request->set_vector(vector);
            qunibusadapter->INTR(*intr_request, NULL, 0);
            printf("Interrupt with level=%d, priority slot=%d, vector=%03o generated.\n", level,
                   priority_slot, vector);
        } else if (test_loaded && !strcasecmp(s_opcode, "dma") && n_fields == 5) {
            // dma <slot> <from> <to> <data>
            uint8_t dma_channel;
            uint32_t addr_from, addr_to;
            uint16_t fillword;
            dma_channel = strtol(s_param[0], NULL, 10);
            if (dma_channel >= test_controller->dma_channel_count) {
                printf("Only DMA channels 0..%u possible.\n",
                       (unsigned) test_controller->dma_channel_count);
                continue;
            }
            qunibus->parse_addr(s_param[1], &addr_from);
            qunibus->parse_addr(s_param[2], &addr_to);
            qunibus->parse_word(s_param[3], &fillword);
            if (addr_to < addr_from)
                addr_to = addr_from;
            unsigned wordcount = (addr_to - addr_from + 2) / 2;

            // do not use single global "membuffer": need independent buffer per concurrent DMA with different data
            memoryimage_c *dma_buffer = test_controller->dma_channel_buffer[dma_channel];
            dma_buffer->set_addr_range(addr_from, addr_to);
            dma_buffer->fill(fillword);

            // DMA running asynchronically parallel, no info on BUS timeout yet. User has to wait.
            dma_request_c *dma_request = test_controller->dma_channel_request[dma_channel];
            qunibusadapter->DMA(*dma_request, false, QUNIBUS_CYCLE_DATO, addr_from,
                                &(dma_buffer->data.words[addr_from / 2]), wordcount);
            printf("DEPOSIT in slot %d started for %s..%s\n", dma_request->get_priority_slot(),
                   qunibus->addr2text(addr_from), qunibus->addr2text(addr_to));
        } else if (!strcasecmp(s_opcode, "dbg") && n_fields == 2) {
            if (!strcasecmp(s_param[0], "c")) {
                logger->clear();
                printf("Debug log cleared.\n");
            } else if (!strcasecmp(s_param[0], "s"))
                logger->dump();
            else if (!strcasecmp(s_param[0], "f"))
                logger->dump(logger->default_filepath);
        } else {
            printf("Unknown command \"%s\"!\n", s_choice);
            show_help = true;
        }
    } // while(!ready) ;
    if (active) {
        printf("***\n");
        printf("*** Stopping " QUNIBUS_NAME " logic on PRU\n");
        printf("***\n");
        qunibusadapter->enabled.set(false);
        active = false;
    }
    delete test_controller;

// Switch off bus drivers
    buslatches.output_enable(false);
    hardware_shutdown();

}