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/***************************************************************************
* Copyright (C) 2016 by Matthias Welwarsky *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* *
***************************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdlib.h>
#include <stdint.h>
#include "target/arm_adi_v5.h"
#include "target/arm_cti.h"
#include "target/target.h"
#include "helper/time_support.h"
#include "helper/list.h"
#include "helper/command.h"
struct arm_cti {
struct list_head lh;
char *name;
struct adiv5_mem_ap_spot spot;
};
static LIST_HEAD(all_cti);
const char *arm_cti_name(struct arm_cti *self)
{
return self->name;
}
struct arm_cti *cti_instance_by_jim_obj(Jim_Interp *interp, Jim_Obj *o)
{
struct arm_cti *obj = NULL;
const char *name;
bool found = false;
name = Jim_GetString(o, NULL);
list_for_each_entry(obj, &all_cti, lh) {
if (!strcmp(name, obj->name)) {
found = true;
break;
}
}
if (found)
return obj;
return NULL;
}
static int arm_cti_mod_reg_bits(struct arm_cti *self, unsigned int reg, uint32_t mask, uint32_t value)
{
struct adiv5_ap *ap = dap_ap(self->spot.dap, self->spot.ap_num);
uint32_t tmp;
/* Read register */
int retval = mem_ap_read_atomic_u32(ap, self->spot.base + reg, &tmp);
if (ERROR_OK != retval)
return retval;
/* clear bitfield */
tmp &= ~mask;
/* put new value */
tmp |= value & mask;
/* write new value */
return mem_ap_write_atomic_u32(ap, self->spot.base + reg, tmp);
}
int arm_cti_enable(struct arm_cti *self, bool enable)
{
struct adiv5_ap *ap = dap_ap(self->spot.dap, self->spot.ap_num);
uint32_t val = enable ? 1 : 0;
return mem_ap_write_atomic_u32(ap, self->spot.base + CTI_CTR, val);
}
int arm_cti_ack_events(struct arm_cti *self, uint32_t event)
{
struct adiv5_ap *ap = dap_ap(self->spot.dap, self->spot.ap_num);
int retval;
uint32_t tmp;
retval = mem_ap_write_atomic_u32(ap, self->spot.base + CTI_INACK, event);
if (retval == ERROR_OK) {
int64_t then = timeval_ms();
for (;;) {
retval = mem_ap_read_atomic_u32(ap, self->spot.base + CTI_TROUT_STATUS, &tmp);
if (retval != ERROR_OK)
break;
if ((tmp & event) == 0)
break;
if (timeval_ms() > then + 1000) {
LOG_ERROR("timeout waiting for target");
retval = ERROR_TARGET_TIMEOUT;
break;
}
}
}
return retval;
}
int arm_cti_gate_channel(struct arm_cti *self, uint32_t channel)
{
if (channel > 31)
return ERROR_COMMAND_ARGUMENT_INVALID;
return arm_cti_mod_reg_bits(self, CTI_GATE, CTI_CHNL(channel), 0);
}
int arm_cti_ungate_channel(struct arm_cti *self, uint32_t channel)
{
if (channel > 31)
return ERROR_COMMAND_ARGUMENT_INVALID;
return arm_cti_mod_reg_bits(self, CTI_GATE, CTI_CHNL(channel), 0xFFFFFFFF);
}
int arm_cti_write_reg(struct arm_cti *self, unsigned int reg, uint32_t value)
{
struct adiv5_ap *ap = dap_ap(self->spot.dap, self->spot.ap_num);
return mem_ap_write_atomic_u32(ap, self->spot.base + reg, value);
}
int arm_cti_read_reg(struct arm_cti *self, unsigned int reg, uint32_t *p_value)
{
struct adiv5_ap *ap = dap_ap(self->spot.dap, self->spot.ap_num);
if (p_value == NULL)
return ERROR_COMMAND_ARGUMENT_INVALID;
return mem_ap_read_atomic_u32(ap, self->spot.base + reg, p_value);
}
int arm_cti_pulse_channel(struct arm_cti *self, uint32_t channel)
{
if (channel > 31)
return ERROR_COMMAND_ARGUMENT_INVALID;
return arm_cti_write_reg(self, CTI_APPPULSE, CTI_CHNL(channel));
}
int arm_cti_set_channel(struct arm_cti *self, uint32_t channel)
{
if (channel > 31)
return ERROR_COMMAND_ARGUMENT_INVALID;
return arm_cti_write_reg(self, CTI_APPSET, CTI_CHNL(channel));
}
int arm_cti_clear_channel(struct arm_cti *self, uint32_t channel)
{
if (channel > 31)
return ERROR_COMMAND_ARGUMENT_INVALID;
return arm_cti_write_reg(self, CTI_APPCLEAR, CTI_CHNL(channel));
}
static uint32_t cti_regs[28];
static const struct {
uint32_t offset;
const char *label;
uint32_t *p_val;
} cti_names[] = {
{ CTI_CTR, "CTR", &cti_regs[0] },
{ CTI_GATE, "GATE", &cti_regs[1] },
{ CTI_INEN0, "INEN0", &cti_regs[2] },
{ CTI_INEN1, "INEN1", &cti_regs[3] },
{ CTI_INEN2, "INEN2", &cti_regs[4] },
{ CTI_INEN3, "INEN3", &cti_regs[5] },
{ CTI_INEN4, "INEN4", &cti_regs[6] },
{ CTI_INEN5, "INEN5", &cti_regs[7] },
{ CTI_INEN6, "INEN6", &cti_regs[8] },
{ CTI_INEN7, "INEN7", &cti_regs[9] },
{ CTI_INEN8, "INEN8", &cti_regs[10] },
{ CTI_OUTEN0, "OUTEN0", &cti_regs[11] },
{ CTI_OUTEN1, "OUTEN1", &cti_regs[12] },
{ CTI_OUTEN2, "OUTEN2", &cti_regs[13] },
{ CTI_OUTEN3, "OUTEN3", &cti_regs[14] },
{ CTI_OUTEN4, "OUTEN4", &cti_regs[15] },
{ CTI_OUTEN5, "OUTEN5", &cti_regs[16] },
{ CTI_OUTEN6, "OUTEN6", &cti_regs[17] },
{ CTI_OUTEN7, "OUTEN7", &cti_regs[18] },
{ CTI_OUTEN8, "OUTEN8", &cti_regs[19] },
{ CTI_TRIN_STATUS, "TRIN", &cti_regs[20] },
{ CTI_TROUT_STATUS, "TROUT", &cti_regs[21] },
{ CTI_CHIN_STATUS, "CHIN", &cti_regs[22] },
{ CTI_CHOU_STATUS, "CHOUT", &cti_regs[23] },
{ CTI_APPSET, "APPSET", &cti_regs[24] },
{ CTI_APPCLEAR, "APPCLR", &cti_regs[25] },
{ CTI_APPPULSE, "APPPULSE", &cti_regs[26] },
{ CTI_INACK, "INACK", &cti_regs[27] },
};
static int cti_find_reg_offset(const char *name)
{
unsigned int i;
for (i = 0; i < ARRAY_SIZE(cti_names); i++) {
if (!strcmp(name, cti_names[i].label))
return cti_names[i].offset;
}
LOG_ERROR("unknown CTI register %s", name);
return -1;
}
int arm_cti_cleanup_all(void)
{
struct arm_cti *obj, *tmp;
list_for_each_entry_safe(obj, tmp, &all_cti, lh) {
free(obj->name);
free(obj);
}
return ERROR_OK;
}
COMMAND_HANDLER(handle_cti_dump)
{
struct arm_cti *cti = CMD_DATA;
struct adiv5_ap *ap = dap_ap(cti->spot.dap, cti->spot.ap_num);
int retval = ERROR_OK;
for (int i = 0; (retval == ERROR_OK) && (i < (int)ARRAY_SIZE(cti_names)); i++)
retval = mem_ap_read_u32(ap,
cti->spot.base + cti_names[i].offset, cti_names[i].p_val);
if (retval == ERROR_OK)
retval = dap_run(ap->dap);
if (retval != ERROR_OK)
return JIM_ERR;
for (int i = 0; i < (int)ARRAY_SIZE(cti_names); i++)
command_print(CMD, "%8.8s (0x%04"PRIx32") 0x%08"PRIx32,
cti_names[i].label, cti_names[i].offset, *cti_names[i].p_val);
return JIM_OK;
}
COMMAND_HANDLER(handle_cti_enable)
{
struct arm_cti *cti = CMD_DATA;
bool on_off;
if (CMD_ARGC != 1)
return ERROR_COMMAND_SYNTAX_ERROR;
COMMAND_PARSE_ON_OFF(CMD_ARGV[0], on_off);
return arm_cti_enable(cti, on_off);
}
COMMAND_HANDLER(handle_cti_testmode)
{
struct arm_cti *cti = CMD_DATA;
bool on_off;
if (CMD_ARGC != 1)
return ERROR_COMMAND_SYNTAX_ERROR;
COMMAND_PARSE_ON_OFF(CMD_ARGV[0], on_off);
return arm_cti_write_reg(cti, 0xf00, on_off ? 0x1 : 0x0);
}
COMMAND_HANDLER(handle_cti_write)
{
struct arm_cti *cti = CMD_DATA;
int offset;
uint32_t value;
if (CMD_ARGC != 2)
return ERROR_COMMAND_SYNTAX_ERROR;
offset = cti_find_reg_offset(CMD_ARGV[0]);
if (offset < 0)
return ERROR_FAIL;
COMMAND_PARSE_NUMBER(u32, CMD_ARGV[1], value);
return arm_cti_write_reg(cti, offset, value);
}
COMMAND_HANDLER(handle_cti_read)
{
struct arm_cti *cti = CMD_DATA;
int offset;
int retval;
uint32_t value;
if (CMD_ARGC != 1)
return ERROR_COMMAND_SYNTAX_ERROR;
offset = cti_find_reg_offset(CMD_ARGV[0]);
if (offset < 0)
return ERROR_FAIL;
retval = arm_cti_read_reg(cti, offset, &value);
if (retval != ERROR_OK)
return retval;
command_print(CMD, "0x%08"PRIx32, value);
return ERROR_OK;
}
COMMAND_HANDLER(handle_cti_ack)
{
struct arm_cti *cti = CMD_DATA;
uint32_t event;
if (CMD_ARGC != 1)
return ERROR_COMMAND_SYNTAX_ERROR;
COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], event);
int retval = arm_cti_ack_events(cti, 1 << event);
if (retval != ERROR_OK)
return retval;
return ERROR_OK;
}
COMMAND_HANDLER(handle_cti_channel)
{
struct arm_cti *cti = CMD_DATA;
int retval = ERROR_OK;
uint32_t ch_num;
if (CMD_ARGC != 2)
return ERROR_COMMAND_SYNTAX_ERROR;
COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], ch_num);
if (!strcmp(CMD_ARGV[1], "gate"))
retval = arm_cti_gate_channel(cti, ch_num);
else if (!strcmp(CMD_ARGV[1], "ungate"))
retval = arm_cti_ungate_channel(cti, ch_num);
else if (!strcmp(CMD_ARGV[1], "pulse"))
retval = arm_cti_pulse_channel(cti, ch_num);
else if (!strcmp(CMD_ARGV[1], "set"))
retval = arm_cti_set_channel(cti, ch_num);
else if (!strcmp(CMD_ARGV[1], "clear"))
retval = arm_cti_clear_channel(cti, ch_num);
else {
command_print(CMD, "Possible channel operations: gate|ungate|set|clear|pulse");
return ERROR_COMMAND_ARGUMENT_INVALID;
}
if (retval != ERROR_OK)
return retval;
return ERROR_OK;
}
static const struct command_registration cti_instance_command_handlers[] = {
{
.name = "dump",
.mode = COMMAND_EXEC,
.handler = handle_cti_dump,
.help = "dump CTI registers",
.usage = "",
},
{
.name = "enable",
.mode = COMMAND_EXEC,
.handler = handle_cti_enable,
.help = "enable or disable the CTI",
.usage = "'on'|'off'",
},
{
.name = "testmode",
.mode = COMMAND_EXEC,
.handler = handle_cti_testmode,
.help = "enable or disable integration test mode",
.usage = "'on'|'off'",
},
{
.name = "write",
.mode = COMMAND_EXEC,
.handler = handle_cti_write,
.help = "write to a CTI register",
.usage = "register_name value",
},
{
.name = "read",
.mode = COMMAND_EXEC,
.handler = handle_cti_read,
.help = "read a CTI register",
.usage = "register_name",
},
{
.name = "ack",
.mode = COMMAND_EXEC,
.handler = handle_cti_ack,
.help = "acknowledge a CTI event",
.usage = "event",
},
{
.name = "channel",
.mode = COMMAND_EXEC,
.handler = handle_cti_channel,
.help = "do an operation on one CTI channel, possible operations: "
"gate, ungate, set, clear and pulse",
.usage = "channel_number operation",
},
COMMAND_REGISTRATION_DONE
};
static int cti_configure(Jim_GetOptInfo *goi, struct arm_cti *cti)
{
/* parse config or cget options ... */
while (goi->argc > 0) {
int e = adiv5_jim_mem_ap_spot_configure(&cti->spot, goi);
if (e != JIM_OK)
return e;
}
if (!cti->spot.dap) {
Jim_SetResultString(goi->interp, "-dap required when creating CTI", -1);
return JIM_ERR;
}
return JIM_OK;
}
static int cti_create(Jim_GetOptInfo *goi)
{
struct command_context *cmd_ctx;
static struct arm_cti *cti;
Jim_Obj *new_cmd;
Jim_Cmd *cmd;
const char *cp;
int e;
cmd_ctx = current_command_context(goi->interp);
assert(cmd_ctx != NULL);
if (goi->argc < 3) {
Jim_WrongNumArgs(goi->interp, 1, goi->argv, "?name? ..options...");
return JIM_ERR;
}
/* COMMAND */
Jim_GetOpt_Obj(goi, &new_cmd);
/* does this command exist? */
cmd = Jim_GetCommand(goi->interp, new_cmd, JIM_ERRMSG);
if (cmd) {
cp = Jim_GetString(new_cmd, NULL);
Jim_SetResultFormatted(goi->interp, "Command: %s Exists", cp);
return JIM_ERR;
}
/* Create it */
cti = calloc(1, sizeof(*cti));
if (cti == NULL)
return JIM_ERR;
adiv5_mem_ap_spot_init(&cti->spot);
/* Do the rest as "configure" options */
goi->isconfigure = 1;
e = cti_configure(goi, cti);
if (e != JIM_OK) {
free(cti);
return e;
}
cp = Jim_GetString(new_cmd, NULL);
cti->name = strdup(cp);
/* now - create the new cti name command */
const struct command_registration cti_subcommands[] = {
{
.chain = cti_instance_command_handlers,
},
COMMAND_REGISTRATION_DONE
};
const struct command_registration cti_commands[] = {
{
.name = cp,
.mode = COMMAND_ANY,
.help = "cti instance command group",
.usage = "",
.chain = cti_subcommands,
},
COMMAND_REGISTRATION_DONE
};
e = register_commands(cmd_ctx, NULL, cti_commands);
if (ERROR_OK != e)
return JIM_ERR;
struct command *c = command_find_in_context(cmd_ctx, cp);
assert(c);
command_set_handler_data(c, cti);
list_add_tail(&cti->lh, &all_cti);
return (ERROR_OK == e) ? JIM_OK : JIM_ERR;
}
static int jim_cti_create(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
{
Jim_GetOptInfo goi;
Jim_GetOpt_Setup(&goi, interp, argc - 1, argv + 1);
if (goi.argc < 2) {
Jim_WrongNumArgs(goi.interp, goi.argc, goi.argv,
"<name> [<cti_options> ...]");
return JIM_ERR;
}
return cti_create(&goi);
}
static int jim_cti_names(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
{
struct arm_cti *obj;
if (argc != 1) {
Jim_WrongNumArgs(interp, 1, argv, "Too many parameters");
return JIM_ERR;
}
Jim_SetResult(interp, Jim_NewListObj(interp, NULL, 0));
list_for_each_entry(obj, &all_cti, lh) {
Jim_ListAppendElement(interp, Jim_GetResult(interp),
Jim_NewStringObj(interp, obj->name, -1));
}
return JIM_OK;
}
static const struct command_registration cti_subcommand_handlers[] = {
{
.name = "create",
.mode = COMMAND_ANY,
.jim_handler = jim_cti_create,
.usage = "name '-chain-position' name [options ...]",
.help = "Creates a new CTI object",
},
{
.name = "names",
.mode = COMMAND_ANY,
.jim_handler = jim_cti_names,
.usage = "",
.help = "Lists all registered CTI objects by name",
},
COMMAND_REGISTRATION_DONE
};
static const struct command_registration cti_command_handlers[] = {
{
.name = "cti",
.mode = COMMAND_CONFIG,
.help = "CTI commands",
.chain = cti_subcommand_handlers,
.usage = "",
},
COMMAND_REGISTRATION_DONE
};
int cti_register_commands(struct command_context *cmd_ctx)
{
return register_commands(cmd_ctx, NULL, cti_command_handlers);
}
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