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// SPDX-License-Identifier: GPL-2.0-or-later
/***************************************************************************
* Copyright (C) 2016 by Matthias Welwarsky *
* *
***************************************************************************/
#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;
struct adiv5_ap *ap;
};
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 = self->ap;
uint32_t tmp;
/* Read register */
int retval = mem_ap_read_atomic_u32(ap, self->spot.base + reg, &tmp);
if (retval != ERROR_OK)
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)
{
uint32_t val = enable ? 1 : 0;
return mem_ap_write_atomic_u32(self->ap, self->spot.base + CTI_CTR, val);
}
int arm_cti_ack_events(struct arm_cti *self, uint32_t event)
{
struct adiv5_ap *ap = self->ap;
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)
{
return mem_ap_write_atomic_u32(self->ap, self->spot.base + reg, value);
}
int arm_cti_read_reg(struct arm_cti *self, unsigned int reg, uint32_t *p_value)
{
if (!p_value)
return ERROR_COMMAND_ARGUMENT_INVALID;
return mem_ap_read_atomic_u32(self->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 const struct {
uint32_t offset;
const char *label;
} cti_names[] = {
{ CTI_CTR, "CTR" },
{ CTI_GATE, "GATE" },
{ CTI_INEN0, "INEN0" },
{ CTI_INEN1, "INEN1" },
{ CTI_INEN2, "INEN2" },
{ CTI_INEN3, "INEN3" },
{ CTI_INEN4, "INEN4" },
{ CTI_INEN5, "INEN5" },
{ CTI_INEN6, "INEN6" },
{ CTI_INEN7, "INEN7" },
{ CTI_INEN8, "INEN8" },
{ CTI_OUTEN0, "OUTEN0" },
{ CTI_OUTEN1, "OUTEN1" },
{ CTI_OUTEN2, "OUTEN2" },
{ CTI_OUTEN3, "OUTEN3" },
{ CTI_OUTEN4, "OUTEN4" },
{ CTI_OUTEN5, "OUTEN5" },
{ CTI_OUTEN6, "OUTEN6" },
{ CTI_OUTEN7, "OUTEN7" },
{ CTI_OUTEN8, "OUTEN8" },
{ CTI_TRIN_STATUS, "TRIN" },
{ CTI_TROUT_STATUS, "TROUT" },
{ CTI_CHIN_STATUS, "CHIN" },
{ CTI_CHOU_STATUS, "CHOUT" },
{ CTI_APPSET, "APPSET" },
{ CTI_APPCLEAR, "APPCLR" },
{ CTI_APPPULSE, "APPPULSE" },
{ CTI_INACK, "INACK" },
{ CTI_DEVCTL, "DEVCTL" },
};
static int cti_find_reg_offset(const char *name)
{
for (size_t 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) {
if (obj->ap)
dap_put_ap(obj->ap);
free(obj->name);
free(obj);
}
return ERROR_OK;
}
COMMAND_HANDLER(handle_cti_dump)
{
struct arm_cti *cti = CMD_DATA;
struct adiv5_ap *ap = cti->ap;
int retval = ERROR_OK;
uint32_t values[ARRAY_SIZE(cti_names)];
for (size_t i = 0; (retval == ERROR_OK) && (i < ARRAY_SIZE(cti_names)); i++)
retval = mem_ap_read_u32(ap,
cti->spot.base + cti_names[i].offset, &values[i]);
if (retval == ERROR_OK)
retval = dap_run(ap->dap);
if (retval != ERROR_OK)
return JIM_ERR;
for (size_t i = 0; i < ARRAY_SIZE(cti_names); i++)
command_print(CMD, "%8.8s (0x%04"PRIx32") 0x%08"PRIx32,
cti_names[i].label, cti_names[i].offset, values[i]);
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(struct jim_getopt_info *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_CONTINUE)
Jim_SetResultFormatted(goi->interp, "unknown option '%s'",
Jim_String(goi->argv[0]));
if (e != JIM_OK)
return JIM_ERR;
}
if (!cti->spot.dap) {
Jim_SetResultString(goi->interp, "-dap required when creating CTI", -1);
return JIM_ERR;
}
return JIM_OK;
}
static int cti_create(struct jim_getopt_info *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);
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_NONE);
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)
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_with_data(cmd_ctx, NULL, cti_commands, cti);
if (e != ERROR_OK)
return JIM_ERR;
list_add_tail(&cti->lh, &all_cti);
cti->ap = dap_get_ap(cti->spot.dap, cti->spot.ap_num);
if (!cti->ap) {
Jim_SetResultString(goi->interp, "Cannot get AP", -1);
return JIM_ERR;
}
return JIM_OK;
}
static int jim_cti_create(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
{
struct jim_getopt_info 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);
}
COMMAND_HANDLER(cti_handle_names)
{
struct arm_cti *obj;
if (CMD_ARGC != 0)
return ERROR_COMMAND_SYNTAX_ERROR;
list_for_each_entry(obj, &all_cti, lh)
command_print(CMD, "%s", obj->name);
return ERROR_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,
.handler = cti_handle_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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