pld.c

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// SPDX-License-Identifier: GPL-2.0-or-later
 
/***************************************************************************
 *   Copyright (C) 2006 by Dominic Rath                                    *
 *   Dominic.Rath@gmx.de                                                   *
 ***************************************************************************/
 
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
 
#include "pld.h"
#include <helper/log.h>
#include <helper/replacements.h>
#include <helper/time_support.h>
 
 
/* pld drivers
 */
extern struct pld_driver virtex2_pld;
 
static struct pld_driver *pld_drivers[] = {
    &virtex2_pld,
    NULL,
};
 
static struct pld_device *pld_devices;
 
struct pld_device *get_pld_device_by_num(int num)
{
    struct pld_device *p;
    int i = 0;
 
    for (p = pld_devices; p; p = p->next) {
        if (i++ == num)
            return p;
    }
 
    return NULL;
}
 
/* pld device <driver> [driver_options ...]
 */
COMMAND_HANDLER(handle_pld_device_command)
{
    int i;
    int found = 0;
 
    if (CMD_ARGC < 1)
        return ERROR_COMMAND_SYNTAX_ERROR;
 
    for (i = 0; pld_drivers[i]; i++) {
        if (strcmp(CMD_ARGV[0], pld_drivers[i]->name) == 0) {
            struct pld_device *p, *c;
 
            /* register pld specific commands */
            int retval;
            if (pld_drivers[i]->commands) {
                retval = register_commands(CMD_CTX, NULL, pld_drivers[i]->commands);
                if (retval != ERROR_OK) {
                    LOG_ERROR("couldn't register '%s' commands", CMD_ARGV[0]);
                    return ERROR_FAIL;
                }
            }
 
            c = malloc(sizeof(struct pld_device));
            c->driver = pld_drivers[i];
            c->next = NULL;
 
            retval = CALL_COMMAND_HANDLER(
                    pld_drivers[i]->pld_device_command, c);
            if (retval != ERROR_OK) {
                LOG_ERROR("'%s' driver rejected pld device",
                    CMD_ARGV[0]);
                free(c);
                return ERROR_OK;
            }
 
            /* put pld device in linked list */
            if (pld_devices) {
                /* find last pld device */
                for (p = pld_devices; p && p->next; p = p->next)
                    ;
                if (p)
                    p->next = c;
            } else
                pld_devices = c;
 
            found = 1;
        }
    }
 
    /* no matching pld driver found */
    if (!found) {
        LOG_ERROR("pld driver '%s' not found", CMD_ARGV[0]);
        exit(-1);
    }
 
    return ERROR_OK;
}
 
COMMAND_HANDLER(handle_pld_devices_command)
{
    struct pld_device *p;
    int i = 0;
 
    if (!pld_devices) {
        command_print(CMD, "no pld devices configured");
        return ERROR_OK;
    }
 
    for (p = pld_devices; p; p = p->next)
        command_print(CMD, "#%i: %s", i++, p->driver->name);
 
    return ERROR_OK;
}
 
COMMAND_HANDLER(handle_pld_load_command)
{
    int retval;
    struct timeval start, end, duration;
    struct pld_device *p;
 
    gettimeofday(&start, NULL);
 
    if (CMD_ARGC < 2)
        return ERROR_COMMAND_SYNTAX_ERROR;
 
    unsigned dev_id;
    COMMAND_PARSE_NUMBER(uint, CMD_ARGV[0], dev_id);
    p = get_pld_device_by_num(dev_id);
    if (!p) {
        command_print(CMD, "pld device '#%s' is out of bounds", CMD_ARGV[0]);
        return ERROR_OK;
    }
 
    retval = p->driver->load(p, CMD_ARGV[1]);
    if (retval != ERROR_OK) {
        command_print(CMD, "failed loading file %s to pld device %u",
            CMD_ARGV[1], dev_id);
        switch (retval) {
        }
        return retval;
    } else {
        gettimeofday(&end, NULL);
        timeval_subtract(&duration, &end, &start);
 
        command_print(CMD, "loaded file %s to pld device %u in %jis %jius",
            CMD_ARGV[1], dev_id,
            (intmax_t)duration.tv_sec, (intmax_t)duration.tv_usec);
    }
 
    return ERROR_OK;
}
 
static const struct command_registration pld_exec_command_handlers[] = {
    {
        .name = "devices",
        .handler = handle_pld_devices_command,
        .mode = COMMAND_EXEC,
        .help = "list configured pld devices",
        .usage = "",
    },
    {
        .name = "load",
        .handler = handle_pld_load_command,
        .mode = COMMAND_EXEC,
        .help = "load configuration file into PLD",
        .usage = "pld_num filename",
    },
    COMMAND_REGISTRATION_DONE
};
 
static int pld_init(struct command_context *cmd_ctx)
{
    if (!pld_devices)
        return ERROR_OK;
 
    return register_commands(cmd_ctx, "pld", pld_exec_command_handlers);
}
 
COMMAND_HANDLER(handle_pld_init_command)
{
    if (CMD_ARGC != 0)
        return ERROR_COMMAND_SYNTAX_ERROR;
 
    static bool pld_initialized;
    if (pld_initialized) {
        LOG_INFO("'pld init' has already been called");
        return ERROR_OK;
    }
    pld_initialized = true;
 
    LOG_DEBUG("Initializing PLDs...");
    return pld_init(CMD_CTX);
}
 
static const struct command_registration pld_config_command_handlers[] = {
    {
        .name = "device",
        .mode = COMMAND_CONFIG,
        .handler = handle_pld_device_command,
        .help = "configure a PLD device",
        .usage = "driver_name [driver_args ... ]",
    },
    {
        .name = "init",
        .mode = COMMAND_CONFIG,
        .handler = handle_pld_init_command,
        .help = "initialize PLD devices",
        .usage = ""
    },
    COMMAND_REGISTRATION_DONE
};
static const struct command_registration pld_command_handler[] = {
    {
        .name = "pld",
        .mode = COMMAND_ANY,
        .help = "programmable logic device commands",
        .usage = "",
        .chain = pld_config_command_handlers,
    },
    COMMAND_REGISTRATION_DONE
};
int pld_register_commands(struct command_context *cmd_ctx)
{
    return register_commands(cmd_ctx, NULL, pld_command_handler);
}