diff options
Diffstat (limited to 'chip/ish/host_command_heci.c')
| -rw-r--r-- | chip/ish/host_command_heci.c | 177 |
1 files changed, 0 insertions, 177 deletions
diff --git a/chip/ish/host_command_heci.c b/chip/ish/host_command_heci.c deleted file mode 100644 index 2fcab44b8b..0000000000 --- a/chip/ish/host_command_heci.c +++ /dev/null @@ -1,177 +0,0 @@ -/* Copyright 2019 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - */ - -#include "common.h" -#include "console.h" -#include "heci_client.h" -#include "host_command.h" -#include "host_command_heci.h" -#include "ipc_heci.h" -#include "ish_fwst.h" -#include "util.h" - -#define CPUTS(outstr) cputs(CC_LPC, outstr) -#define CPRINTS(format, args...) cprints(CC_LPC, format, ## args) -#define CPRINTF(format, args...) cprintf(CC_LPC, format, ## args) - -#define HECI_CLIENT_CROS_EC_ISH_GUID { 0x7b7154d0, 0x56f4, 0x4bdc,\ - { 0xb0, 0xd8, 0x9e, 0x7c, 0xda, 0xe0, 0xd6, 0xa0 } } - -/* Handle for all heci cros_ec interactions */ -static heci_handle_t heci_cros_ec_handle = HECI_INVALID_HANDLE; - -/* - * If we hit response buffer size issues, we can increase this. This is the - * current size of a single HECI packet. - * - * Aligning with other assumptions in host command stack, only a single host - * command can be processed at a given time. - */ - -struct cros_ec_ishtp_msg_hdr { - uint8_t channel; - uint8_t status; - uint8_t id; /* Pairs up request and responses */ - uint8_t reserved; -} __ec_align4; - -#define CROS_EC_ISHTP_MSG_HDR_SIZE sizeof(struct cros_ec_ishtp_msg_hdr) -#define HECI_CROS_EC_RESPONSE_MAX \ - (HECI_IPC_PAYLOAD_SIZE - CROS_EC_ISHTP_MSG_HDR_SIZE) - -struct cros_ec_ishtp_msg { - struct cros_ec_ishtp_msg_hdr hdr; - uint8_t data[0]; -} __ec_align4; - -enum heci_cros_ec_channel { - CROS_EC_COMMAND = 1, /* initiated from AP */ - CROS_MKBP_EVENT = 2, /* initiated from EC */ -}; - -static uint8_t response_buffer[IPC_MAX_PAYLOAD_SIZE] __aligned(4); -static struct host_packet heci_packet; - -int heci_send_mkbp_event(uint32_t *timestamp) -{ - struct cros_ec_ishtp_msg evt; - int rv; - - evt.hdr.channel = CROS_MKBP_EVENT; - evt.hdr.status = 0; - - rv = heci_send_msg_timestamp(heci_cros_ec_handle, (uint8_t *)&evt, - sizeof(evt), timestamp); - /* - * heci_send_msg_timestamp sends back negative error codes. Change to - * EC style codes - */ - return rv < 0 ? -rv : EC_SUCCESS; -} - -static void heci_send_hostcmd_response(struct host_packet *pkt) -{ - int rv; - struct cros_ec_ishtp_msg *out = - (struct cros_ec_ishtp_msg *)response_buffer; - - out->hdr.channel = CROS_EC_COMMAND; - out->hdr.status = 0; - /* id is already set in the receiving method */ - - rv = heci_send_msg(heci_cros_ec_handle, (uint8_t *)out, - pkt->response_size + CROS_EC_ISHTP_MSG_HDR_SIZE); - if (rv < 0) - CPRINTS("HC response failed %d", -rv); -} - -static void cros_ec_ishtp_subsys_new_msg_received(const heci_handle_t handle, - uint8_t *msg, const size_t msg_size) -{ - struct cros_ec_ishtp_msg *in = (void *) msg; - struct cros_ec_ishtp_msg *out = (void *) response_buffer; - - if (in->hdr.channel != CROS_EC_COMMAND) { - CPRINTS("Unknown HECI packet 0x%02x", in->hdr.channel); - return; - } - memset(&heci_packet, 0, sizeof(heci_packet)); - - /* Copy over id from sender so they can pair up messages */ - out->hdr.id = in->hdr.id; - - heci_packet.send_response = heci_send_hostcmd_response; - - heci_packet.request = in->data; - heci_packet.request_max = HECI_MAX_MSG_SIZE; - heci_packet.request_size = msg_size - CROS_EC_ISHTP_MSG_HDR_SIZE; - - heci_packet.response = out->data; - heci_packet.response_max = HECI_CROS_EC_RESPONSE_MAX; - heci_packet.response_size = 0; - - heci_packet.driver_result = EC_RES_SUCCESS; - host_packet_receive(&heci_packet); -} - -/* - * IPC transfer max is actual 4K, but we don't need kernel buffers that big - * - * Basing size off of existing cros_ec implementations ranging from 128 to 512 - */ -#define HECI_CROS_EC_LIMIT_PACKET_SIZE 256 - -/** - * Get protocol information - */ -static enum ec_status heci_get_protocol_info(struct host_cmd_handler_args *args) -{ - struct ec_response_get_protocol_info *r = args->response; - - memset(r, 0, sizeof(*r)); - r->protocol_versions = BIT(3); - r->max_request_packet_size = HECI_CROS_EC_LIMIT_PACKET_SIZE; - r->max_response_packet_size = HECI_CROS_EC_RESPONSE_MAX; - - args->response_size = sizeof(*r); - - return EC_SUCCESS; -} -DECLARE_HOST_COMMAND(EC_CMD_GET_PROTOCOL_INFO, heci_get_protocol_info, -EC_VER_MASK(0)); - -static int cros_ec_ishtp_subsys_initialize(const heci_handle_t heci_handle) -{ - heci_cros_ec_handle = heci_handle; - ish_fwst_set_fw_status(FWSTS_SENSOR_APP_RUNNING); - return EC_SUCCESS; -} - -static int cros_ec_ishtp_no_op(const heci_handle_t heci_handle) -{ - return EC_SUCCESS; -} - -static void cros_ec_ishtp_disconneted(const heci_handle_t heci_handle) -{ -} - -static const struct heci_client_callbacks cros_ec_ishtp_subsys_heci_cbs = { - .initialize = cros_ec_ishtp_subsys_initialize, - .new_msg_received = cros_ec_ishtp_subsys_new_msg_received, - .suspend = cros_ec_ishtp_no_op, - .resume = cros_ec_ishtp_no_op, - .disconnected = cros_ec_ishtp_disconneted, -}; - -static const struct heci_client cros_ec_ishtp_heci_client = { - .protocol_id = HECI_CLIENT_CROS_EC_ISH_GUID, - .max_msg_size = HECI_MAX_MSG_SIZE, - .protocol_ver = 1, - .max_n_of_connections = 1, - .cbs = &cros_ec_ishtp_subsys_heci_cbs, -}; - -HECI_CLIENT_ENTRY(cros_ec_ishtp_heci_client); |