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/* Copyright 2020 The ChromiumOS Authors
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*
* Host commands for TCPMv2 USB PD module
*/
#include "console.h"
#include "ec_commands.h"
#include "host_command.h"
#include "usb_mux.h"
#include "usb_pd.h"
#include "usb_pd_dpm_sm.h"
#include "usb_pd_tcpm.h"
#include "util.h"
#include <string.h>
#define CPRINTF(format, args...) cprintf(CC_USBPD, format, ##args)
#define CPRINTS(format, args...) cprints(CC_USBPD, format, ##args)
/* Retrieve all discovery results for the given port and transmit type */
static enum ec_status hc_typec_discovery(struct host_cmd_handler_args *args)
{
const struct ec_params_typec_discovery *p = args->params;
struct ec_response_typec_discovery *r = args->response;
const struct pd_discovery *disc;
enum tcpci_msg_type type;
/* Confirm the number of HC VDOs matches our stored VDOs */
BUILD_ASSERT(sizeof(r->discovery_vdo) == sizeof(union disc_ident_ack));
if (p->port >= board_get_usb_pd_port_count())
return EC_RES_INVALID_PARAM;
if (p->partner_type > TYPEC_PARTNER_SOP_PRIME)
return EC_RES_INVALID_PARAM;
type = p->partner_type == TYPEC_PARTNER_SOP ? TCPCI_MSG_SOP :
TCPCI_MSG_SOP_PRIME;
/*
* Clear out access mask so we can track if tasks have touched data
* since read started.
*/
pd_discovery_access_clear(p->port, type);
disc = pd_get_am_discovery_and_notify_access(p->port, type);
/* Initialize return size to that of discovery with no SVIDs */
args->response_size = sizeof(*r);
if (pd_get_identity_discovery(p->port, type) == PD_DISC_COMPLETE) {
r->identity_count = disc->identity_cnt;
memcpy(r->discovery_vdo,
pd_get_identity_response(p->port, type)->raw_value,
sizeof(r->discovery_vdo));
} else {
r->identity_count = 0;
return EC_RES_SUCCESS;
}
if (pd_get_modes_discovery(p->port, type) == PD_DISC_COMPLETE) {
int svid_i;
int max_resp_svids =
(args->response_max - args->response_size) /
sizeof(struct svid_mode_info);
if (disc->svid_cnt > max_resp_svids) {
CPRINTS("Warn: SVIDS exceeded HC response");
r->svid_count = max_resp_svids;
} else {
r->svid_count = disc->svid_cnt;
}
for (svid_i = 0; svid_i < r->svid_count; svid_i++) {
r->svids[svid_i].svid = disc->svids[svid_i].svid;
r->svids[svid_i].mode_count =
disc->svids[svid_i].mode_cnt;
memcpy(r->svids[svid_i].mode_vdo,
disc->svids[svid_i].mode_vdo,
sizeof(r->svids[svid_i].mode_vdo));
args->response_size += sizeof(struct svid_mode_info);
}
} else {
r->svid_count = 0;
}
/*
* Verify that another task did not access this data during the duration
* of the copy. If the data was accessed, return BUSY so the AP will
* try retrieving again and get the updated data.
*/
if (!pd_discovery_access_validate(p->port, type)) {
CPRINTS("[C%d] %s returns EC_RES_BUSY!!\n", p->port, __func__);
return EC_RES_BUSY;
}
return EC_RES_SUCCESS;
}
DECLARE_HOST_COMMAND(EC_CMD_TYPEC_DISCOVERY, hc_typec_discovery,
EC_VER_MASK(0));
/* Default to feature unavailable, with boards supporting it overriding */
__overridable enum ec_status
board_set_tbt_ufp_reply(int port, enum typec_tbt_ufp_reply reply)
{
return EC_RES_UNAVAILABLE;
}
static enum ec_status hc_typec_control(struct host_cmd_handler_args *args)
{
const struct ec_params_typec_control *p = args->params;
mux_state_t mode;
uint32_t data[VDO_MAX_SIZE];
enum tcpci_msg_type tx_type;
if (p->port >= board_get_usb_pd_port_count())
return EC_RES_INVALID_PARAM;
switch (p->command) {
case TYPEC_CONTROL_COMMAND_EXIT_MODES:
pd_dpm_request(p->port, DPM_REQUEST_EXIT_MODES);
break;
case TYPEC_CONTROL_COMMAND_CLEAR_EVENTS:
pd_clear_events(p->port, p->clear_events_mask);
break;
case TYPEC_CONTROL_COMMAND_ENTER_MODE:
return pd_request_enter_mode(p->port, p->mode_to_enter);
case TYPEC_CONTROL_COMMAND_TBT_UFP_REPLY:
return board_set_tbt_ufp_reply(p->port, p->tbt_ufp_reply);
case TYPEC_CONTROL_COMMAND_USB_MUX_SET:
/* The EC will fill in polarity, so filter flip out */
mode = p->mux_params.mux_flags & ~USB_PD_MUX_POLARITY_INVERTED;
if (!IS_ENABLED(CONFIG_USB_MUX_AP_CONTROL))
return EC_RES_INVALID_PARAM;
usb_mux_set_single(p->port, p->mux_params.mux_index, mode,
USB_SWITCH_CONNECT,
polarity_rm_dts(pd_get_polarity(p->port)));
return EC_RES_SUCCESS;
case TYPEC_CONTROL_COMMAND_BIST_SHARE_MODE:
return pd_set_bist_share_mode(p->bist_share_mode);
case TYPEC_CONTROL_COMMAND_SEND_VDM_REQ:
if (!IS_ENABLED(CONFIG_USB_PD_VDM_AP_CONTROL))
return EC_RES_INVALID_PARAM;
if (p->vdm_req_params.vdm_data_objects <= 0 ||
p->vdm_req_params.vdm_data_objects > VDO_MAX_SIZE)
return EC_RES_INVALID_PARAM;
memcpy(data, p->vdm_req_params.vdm_data,
sizeof(uint32_t) * p->vdm_req_params.vdm_data_objects);
switch (p->vdm_req_params.partner_type) {
case TYPEC_PARTNER_SOP:
tx_type = TCPCI_MSG_SOP;
break;
case TYPEC_PARTNER_SOP_PRIME:
tx_type = TCPCI_MSG_SOP_PRIME;
break;
case TYPEC_PARTNER_SOP_PRIME_PRIME:
tx_type = TCPCI_MSG_SOP_PRIME_PRIME;
break;
default:
return EC_RES_INVALID_PARAM;
}
return pd_request_vdm(p->port, data,
p->vdm_req_params.vdm_data_objects,
tx_type);
default:
return EC_RES_INVALID_PARAM;
}
return EC_RES_SUCCESS;
}
DECLARE_HOST_COMMAND(EC_CMD_TYPEC_CONTROL, hc_typec_control, EC_VER_MASK(0));
/*
* Validate ec_response_typec_status_v0's binary compatibility with
* ec_response_typec_status, which is being deprecated.
*/
BUILD_ASSERT(offsetof(struct ec_response_typec_status_v0,
typec_status.sop_prime_revision) ==
offsetof(struct ec_response_typec_status, sop_prime_revision));
BUILD_ASSERT(offsetof(struct ec_response_typec_status_v0, source_cap_pdos) ==
offsetof(struct ec_response_typec_status, source_cap_pdos));
BUILD_ASSERT(sizeof(struct ec_response_typec_status_v0) ==
sizeof(struct ec_response_typec_status));
/*
* Validate ec_response_typec_status_v0's binary compatibility with
* ec_response_typec_status_v1 with respect to typec_status.
*/
BUILD_ASSERT(offsetof(struct ec_response_typec_status_v0,
typec_status.pd_enabled) ==
offsetof(struct ec_response_typec_status_v1,
typec_status.pd_enabled));
BUILD_ASSERT(offsetof(struct ec_response_typec_status_v0,
typec_status.sop_prime_revision) ==
offsetof(struct ec_response_typec_status_v1,
typec_status.sop_prime_revision));
static enum ec_status hc_typec_status(struct host_cmd_handler_args *args)
{
const struct ec_params_typec_status *p = args->params;
struct ec_response_typec_status_v1 *r1 = args->response;
struct ec_response_typec_status_v0 *r0 = args->response;
struct cros_ec_typec_status *cs = &r1->typec_status;
const char *tc_state_name;
if (p->port >= board_get_usb_pd_port_count())
return EC_RES_INVALID_PARAM;
args->response_size = args->version == 0 ? sizeof(*r0) : sizeof(*r1);
if (args->response_max < args->response_size)
return EC_RES_RESPONSE_TOO_BIG;
cs->pd_enabled = pd_comm_is_enabled(p->port);
cs->dev_connected = pd_is_connected(p->port);
cs->sop_connected = pd_capable(p->port);
cs->power_role = pd_get_power_role(p->port);
cs->data_role = pd_get_data_role(p->port);
cs->vconn_role = pd_get_vconn_state(p->port) ? PD_ROLE_VCONN_SRC :
PD_ROLE_VCONN_OFF;
cs->polarity = pd_get_polarity(p->port);
cs->cc_state = pd_get_task_cc_state(p->port);
cs->dp_pin = get_dp_pin_mode(p->port);
cs->mux_state = usb_mux_get(p->port);
tc_state_name = pd_get_task_state_name(p->port);
strzcpy(cs->tc_state, tc_state_name, sizeof(cs->tc_state));
cs->events = pd_get_events(p->port);
if (pd_get_partner_rmdo(p->port).major_rev != 0) {
cs->sop_revision =
PD_STATUS_RMDO_REV_SET_MAJOR(
pd_get_partner_rmdo(p->port).major_rev) |
PD_STATUS_RMDO_REV_SET_MINOR(
pd_get_partner_rmdo(p->port).minor_rev) |
PD_STATUS_RMDO_VER_SET_MAJOR(
pd_get_partner_rmdo(p->port).major_ver) |
PD_STATUS_RMDO_VER_SET_MINOR(
pd_get_partner_rmdo(p->port).minor_ver);
} else if (cs->sop_connected) {
cs->sop_revision = PD_STATUS_REV_SET_MAJOR(
pd_get_rev(p->port, TCPCI_MSG_SOP));
} else {
cs->sop_revision = 0;
}
cs->sop_prime_revision =
pd_get_identity_discovery(p->port, TCPCI_MSG_SOP_PRIME) ==
PD_DISC_COMPLETE ?
PD_STATUS_REV_SET_MAJOR(
pd_get_rev(p->port, TCPCI_MSG_SOP_PRIME)) :
0;
if (args->version == 0) {
cs->source_cap_count = MIN(pd_get_src_cap_cnt(p->port),
ARRAY_SIZE(r0->source_cap_pdos));
memcpy(r0->source_cap_pdos, pd_get_src_caps(p->port),
cs->source_cap_count * sizeof(uint32_t));
cs->sink_cap_count = MIN(pd_get_snk_cap_cnt(p->port),
ARRAY_SIZE(r0->sink_cap_pdos));
memcpy(r0->sink_cap_pdos, pd_get_snk_caps(p->port),
cs->sink_cap_count * sizeof(uint32_t));
} else {
cs->source_cap_count = MIN(pd_get_src_cap_cnt(p->port),
ARRAY_SIZE(r1->source_cap_pdos));
memcpy(r1->source_cap_pdos, pd_get_src_caps(p->port),
cs->source_cap_count * sizeof(uint32_t));
cs->sink_cap_count = MIN(pd_get_snk_cap_cnt(p->port),
ARRAY_SIZE(r1->sink_cap_pdos));
memcpy(r1->sink_cap_pdos, pd_get_snk_caps(p->port),
cs->sink_cap_count * sizeof(uint32_t));
}
return EC_RES_SUCCESS;
}
DECLARE_HOST_COMMAND(EC_CMD_TYPEC_STATUS, hc_typec_status,
EC_VER_MASK(0) | EC_VER_MASK(1));
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