diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ipa/ipa_qmi.c | 538 | ||||
| -rw-r--r-- | drivers/net/ipa/ipa_qmi.h | 41 | ||||
| -rw-r--r-- | drivers/net/ipa/ipa_qmi_msg.c | 663 | ||||
| -rw-r--r-- | drivers/net/ipa/ipa_qmi_msg.h | 252 | ||||
| -rw-r--r-- | drivers/net/ipa/ipa_smp2p.c | 335 | ||||
| -rw-r--r-- | drivers/net/ipa/ipa_smp2p.h | 48 |
6 files changed, 1877 insertions, 0 deletions
diff --git a/drivers/net/ipa/ipa_qmi.c b/drivers/net/ipa/ipa_qmi.c new file mode 100644 index 000000000000..5090f0f923ad --- /dev/null +++ b/drivers/net/ipa/ipa_qmi.c @@ -0,0 +1,538 @@ +// SPDX-License-Identifier: GPL-2.0 + +/* Copyright (c) 2013-2018, The Linux Foundation. All rights reserved. + * Copyright (C) 2018-2020 Linaro Ltd. + */ + +#include <linux/types.h> +#include <linux/string.h> +#include <linux/slab.h> +#include <linux/qrtr.h> +#include <linux/soc/qcom/qmi.h> + +#include "ipa.h" +#include "ipa_endpoint.h" +#include "ipa_mem.h" +#include "ipa_table.h" +#include "ipa_modem.h" +#include "ipa_qmi_msg.h" + +/** + * DOC: AP/Modem QMI Handshake + * + * The AP and modem perform a "handshake" at initialization time to ensure + * both sides know when everything is ready to begin operating. The AP + * driver (this code) uses two QMI handles (endpoints) for this; a client + * using a service on the modem, and server to service modem requests (and + * to supply an indication message from the AP). Once the handshake is + * complete, the AP and modem may begin IPA operation. This occurs + * only when the AP IPA driver, modem IPA driver, and IPA microcontroller + * are ready. + * + * The QMI service on the modem expects to receive an INIT_DRIVER request from + * the AP, which contains parameters used by the modem during initialization. + * The AP sends this request as soon as it is knows the modem side service + * is available. The modem responds to this request, and if this response + * contains a success result, the AP knows the modem IPA driver is ready. + * + * The modem is responsible for loading firmware on the IPA microcontroller. + * This occurs only during the initial modem boot. The modem sends a + * separate DRIVER_INIT_COMPLETE request to the AP to report that the + * microcontroller is ready. The AP may assume the microcontroller is + * ready and remain so (even if the modem reboots) once it has received + * and responded to this request. + * + * There is one final exchange involved in the handshake. It is required + * on the initial modem boot, but optional (but in practice does occur) on + * subsequent boots. The modem expects to receive a final INIT_COMPLETE + * indication message from the AP when it is about to begin its normal + * operation. The AP will only send this message after it has received + * and responded to an INDICATION_REGISTER request from the modem. + * + * So in summary: + * - Whenever the AP learns the modem has booted and its IPA QMI service + * is available, it sends an INIT_DRIVER request to the modem. The + * modem supplies a success response when it is ready to operate. + * - On the initial boot, the modem sets up the IPA microcontroller, and + * sends a DRIVER_INIT_COMPLETE request to the AP when this is done. + * - When the modem is ready to receive an INIT_COMPLETE indication from + * the AP, it sends an INDICATION_REGISTER request to the AP. + * - On the initial modem boot, everything is ready when: + * - AP has received a success response from its INIT_DRIVER request + * - AP has responded to a DRIVER_INIT_COMPLETE request + * - AP has responded to an INDICATION_REGISTER request from the modem + * - AP has sent an INIT_COMPLETE indication to the modem + * - On subsequent modem boots, everything is ready when: + * - AP has received a success response from its INIT_DRIVER request + * - AP has responded to a DRIVER_INIT_COMPLETE request + * - The INDICATION_REGISTER request and INIT_COMPLETE indication are + * optional for non-initial modem boots, and have no bearing on the + * determination of when things are "ready" + */ + +#define IPA_HOST_SERVICE_SVC_ID 0x31 +#define IPA_HOST_SVC_VERS 1 +#define IPA_HOST_SERVICE_INS_ID 1 + +#define IPA_MODEM_SERVICE_SVC_ID 0x31 +#define IPA_MODEM_SERVICE_INS_ID 2 +#define IPA_MODEM_SVC_VERS 1 + +#define QMI_INIT_DRIVER_TIMEOUT 60000 /* A minute in milliseconds */ + +/* Send an INIT_COMPLETE indication message to the modem */ +static void ipa_server_init_complete(struct ipa_qmi *ipa_qmi) +{ + struct ipa *ipa = container_of(ipa_qmi, struct ipa, qmi); + struct qmi_handle *qmi = &ipa_qmi->server_handle; + struct sockaddr_qrtr *sq = &ipa_qmi->modem_sq; + struct ipa_init_complete_ind ind = { }; + int ret; + + ind.status.result = QMI_RESULT_SUCCESS_V01; + ind.status.error = QMI_ERR_NONE_V01; + + ret = qmi_send_indication(qmi, sq, IPA_QMI_INIT_COMPLETE, + IPA_QMI_INIT_COMPLETE_IND_SZ, + ipa_init_complete_ind_ei, &ind); + if (ret) + dev_err(&ipa->pdev->dev, + "error %d sending init complete indication\n", ret); + else + ipa_qmi->indication_sent = true; +} + +/* If requested (and not already sent) send the INIT_COMPLETE indication */ +static void ipa_qmi_indication(struct ipa_qmi *ipa_qmi) +{ + if (!ipa_qmi->indication_requested) + return; + + if (ipa_qmi->indication_sent) + return; + + ipa_server_init_complete(ipa_qmi); +} + +/* Determine whether everything is ready to start normal operation. + * We know everything (else) is ready when we know the IPA driver on + * the modem is ready, and the microcontroller is ready. + * + * When the modem boots (or reboots), the handshake sequence starts + * with the AP sending the modem an INIT_DRIVER request. Within + * that request, the uc_loaded flag will be zero (false) for an + * initial boot, non-zero (true) for a subsequent (SSR) boot. + */ +static void ipa_qmi_ready(struct ipa_qmi *ipa_qmi) +{ + struct ipa *ipa = container_of(ipa_qmi, struct ipa, qmi); + int ret; + + /* We aren't ready until the modem and microcontroller are */ + if (!ipa_qmi->modem_ready || !ipa_qmi->uc_ready) + return; + + /* Send the indication message if it was requested */ + ipa_qmi_indication(ipa_qmi); + + /* The initial boot requires us to send the indication. */ + if (ipa_qmi->initial_boot) { + if (!ipa_qmi->indication_sent) + return; + + /* The initial modem boot completed successfully */ + ipa_qmi->initial_boot = false; + } + + /* We're ready. Start up normal operation */ + ipa = container_of(ipa_qmi, struct ipa, qmi); + ret = ipa_modem_start(ipa); + if (ret) + dev_err(&ipa->pdev->dev, "error %d starting modem\n", ret); +} + +/* All QMI clients from the modem node are gone (modem shut down or crashed). */ +static void ipa_server_bye(struct qmi_handle *qmi, unsigned int node) +{ + struct ipa_qmi *ipa_qmi; + + ipa_qmi = container_of(qmi, struct ipa_qmi, server_handle); + + /* The modem client and server go away at the same time */ + memset(&ipa_qmi->modem_sq, 0, sizeof(ipa_qmi->modem_sq)); + + /* initial_boot doesn't change when modem reboots */ + /* uc_ready doesn't change when modem reboots */ + ipa_qmi->modem_ready = false; + ipa_qmi->indication_requested = false; + ipa_qmi->indication_sent = false; +} + +static struct qmi_ops ipa_server_ops = { + .bye = ipa_server_bye, +}; + +/* Callback function to handle an INDICATION_REGISTER request message from the + * modem. This informs the AP that the modem is now ready to receive the + * INIT_COMPLETE indication message. + */ +static void ipa_server_indication_register(struct qmi_handle *qmi, + struct sockaddr_qrtr *sq, + struct qmi_txn *txn, + const void *decoded) +{ + struct ipa_indication_register_rsp rsp = { }; + struct ipa_qmi *ipa_qmi; + struct ipa *ipa; + int ret; + + ipa_qmi = container_of(qmi, struct ipa_qmi, server_handle); + ipa = container_of(ipa_qmi, struct ipa, qmi); + + rsp.rsp.result = QMI_RESULT_SUCCESS_V01; + rsp.rsp.error = QMI_ERR_NONE_V01; + + ret = qmi_send_response(qmi, sq, txn, IPA_QMI_INDICATION_REGISTER, + IPA_QMI_INDICATION_REGISTER_RSP_SZ, + ipa_indication_register_rsp_ei, &rsp); + if (!ret) { + ipa_qmi->indication_requested = true; + ipa_qmi_ready(ipa_qmi); /* We might be ready now */ + } else { + dev_err(&ipa->pdev->dev, + "error %d sending register indication response\n", ret); + } +} + +/* Respond to a DRIVER_INIT_COMPLETE request message from the modem. */ +static void ipa_server_driver_init_complete(struct qmi_handle *qmi, + struct sockaddr_qrtr *sq, + struct qmi_txn *txn, + const void *decoded) +{ + struct ipa_driver_init_complete_rsp rsp = { }; + struct ipa_qmi *ipa_qmi; + struct ipa *ipa; + int ret; + + ipa_qmi = container_of(qmi, struct ipa_qmi, server_handle); + ipa = container_of(ipa_qmi, struct ipa, qmi); + + rsp.rsp.result = QMI_RESULT_SUCCESS_V01; + rsp.rsp.error = QMI_ERR_NONE_V01; + + ret = qmi_send_response(qmi, sq, txn, IPA_QMI_DRIVER_INIT_COMPLETE, + IPA_QMI_DRIVER_INIT_COMPLETE_RSP_SZ, + ipa_driver_init_complete_rsp_ei, &rsp); + if (!ret) { + ipa_qmi->uc_ready = true; + ipa_qmi_ready(ipa_qmi); /* We might be ready now */ + } else { + dev_err(&ipa->pdev->dev, + "error %d sending init complete response\n", ret); + } +} + +/* The server handles two request message types sent by the modem. */ +static struct qmi_msg_handler ipa_server_msg_handlers[] = { + { + .type = QMI_REQUEST, + .msg_id = IPA_QMI_INDICATION_REGISTER, + .ei = ipa_indication_register_req_ei, + .decoded_size = IPA_QMI_INDICATION_REGISTER_REQ_SZ, + .fn = ipa_server_indication_register, + }, + { + .type = QMI_REQUEST, + .msg_id = IPA_QMI_DRIVER_INIT_COMPLETE, + .ei = ipa_driver_init_complete_req_ei, + .decoded_size = IPA_QMI_DRIVER_INIT_COMPLETE_REQ_SZ, + .fn = ipa_server_driver_init_complete, + }, +}; + +/* Handle an INIT_DRIVER response message from the modem. */ +static void ipa_client_init_driver(struct qmi_handle *qmi, + struct sockaddr_qrtr *sq, + struct qmi_txn *txn, const void *decoded) +{ + txn->result = 0; /* IPA_QMI_INIT_DRIVER request was successful */ + complete(&txn->completion); +} + +/* The client handles one response message type sent by the modem. */ +static struct qmi_msg_handler ipa_client_msg_handlers[] = { + { + .type = QMI_RESPONSE, + .msg_id = IPA_QMI_INIT_DRIVER, + .ei = ipa_init_modem_driver_rsp_ei, + .decoded_size = IPA_QMI_INIT_DRIVER_RSP_SZ, + .fn = ipa_client_init_driver, + }, +}; + +/* Return a pointer to an init modem driver request structure, which contains + * configuration parameters for the modem. The modem may be started multiple + * times, but generally these parameters don't change so we can reuse the + * request structure once it's initialized. The only exception is the + * skip_uc_load field, which will be set only after the microcontroller has + * reported it has completed its initialization. + */ +static const struct ipa_init_modem_driver_req * +init_modem_driver_req(struct ipa_qmi *ipa_qmi) +{ + struct ipa *ipa = container_of(ipa_qmi, struct ipa, qmi); + static struct ipa_init_modem_driver_req req; + const struct ipa_mem *mem; + + /* The microcontroller is initialized on the first boot */ + req.skip_uc_load_valid = 1; + req.skip_uc_load = ipa->uc_loaded ? 1 : 0; + + /* We only have to initialize most of it once */ + if (req.platform_type_valid) + return &req; + + req.platform_type_valid = 1; + req.platform_type = IPA_QMI_PLATFORM_TYPE_MSM_ANDROID; + + mem = &ipa->mem[IPA_MEM_MODEM_HEADER]; + if (mem->size) { + req.hdr_tbl_info_valid = 1; + req.hdr_tbl_info.start = ipa->mem_offset + mem->offset; + req.hdr_tbl_info.end = req.hdr_tbl_info.start + mem->size - 1; + } + + mem = &ipa->mem[IPA_MEM_V4_ROUTE]; + req.v4_route_tbl_info_valid = 1; + req.v4_route_tbl_info.start = ipa->mem_offset + mem->offset; + req.v4_route_tbl_info.count = mem->size / IPA_TABLE_ENTRY_SIZE; + + mem = &ipa->mem[IPA_MEM_V6_ROUTE]; + req.v6_route_tbl_info_valid = 1; + req.v6_route_tbl_info.start = ipa->mem_offset + mem->offset; + req.v6_route_tbl_info.count = mem->size / IPA_TABLE_ENTRY_SIZE; + + mem = &ipa->mem[IPA_MEM_V4_FILTER]; + req.v4_filter_tbl_start_valid = 1; + req.v4_filter_tbl_start = ipa->mem_offset + mem->offset; + + mem = &ipa->mem[IPA_MEM_V6_FILTER]; + req.v6_filter_tbl_start_valid = 1; + req.v6_filter_tbl_start = ipa->mem_offset + mem->offset; + + mem = &ipa->mem[IPA_MEM_MODEM]; + if (mem->size) { + req.modem_mem_info_valid = 1; + req.modem_mem_info.start = ipa->mem_offset + mem->offset; + req.modem_mem_info.size = mem->size; + } + + req.ctrl_comm_dest_end_pt_valid = 1; + req.ctrl_comm_dest_end_pt = + ipa->name_map[IPA_ENDPOINT_AP_MODEM_RX]->endpoint_id; + + /* skip_uc_load_valid and skip_uc_load are set above */ + + mem = &ipa->mem[IPA_MEM_MODEM_PROC_CTX]; + if (mem->size) { + req.hdr_proc_ctx_tbl_info_valid = 1; + req.hdr_proc_ctx_tbl_info.start = + ipa->mem_offset + mem->offset; + req.hdr_proc_ctx_tbl_info.end = + req.hdr_proc_ctx_tbl_info.start + mem->size - 1; + } + + /* Nothing to report for the compression table (zip_tbl_info) */ + + mem = &ipa->mem[IPA_MEM_V4_ROUTE_HASHED]; + if (mem->size) { + req.v4_hash_route_tbl_info_valid = 1; + req.v4_hash_route_tbl_info.start = + ipa->mem_offset + mem->offset; + req.v4_hash_route_tbl_info.count = + mem->size / IPA_TABLE_ENTRY_SIZE; + } + + mem = &ipa->mem[IPA_MEM_V6_ROUTE_HASHED]; + if (mem->size) { + req.v6_hash_route_tbl_info_valid = 1; + req.v6_hash_route_tbl_info.start = + ipa->mem_offset + mem->offset; + req.v6_hash_route_tbl_info.count = + mem->size / IPA_TABLE_ENTRY_SIZE; + } + + mem = &ipa->mem[IPA_MEM_V4_FILTER_HASHED]; + if (mem->size) { + req.v4_hash_filter_tbl_start_valid = 1; + req.v4_hash_filter_tbl_start = ipa->mem_offset + mem->offset; + } + + mem = &ipa->mem[IPA_MEM_V6_FILTER_HASHED]; + if (mem->size) { + req.v6_hash_filter_tbl_start_valid = 1; + req.v6_hash_filter_tbl_start = ipa->mem_offset + mem->offset; + } + + /* None of the stats fields are valid (IPA v4.0 and above) */ + + if (ipa->version != IPA_VERSION_3_5_1) { + mem = &ipa->mem[IPA_MEM_STATS_QUOTA]; + if (mem->size) { + req.hw_stats_quota_base_addr_valid = 1; + req.hw_stats_quota_base_addr = + ipa->mem_offset + mem->offset; + req.hw_stats_quota_size_valid = 1; + req.hw_stats_quota_size = ipa->mem_offset + mem->size; + } + + mem = &ipa->mem[IPA_MEM_STATS_DROP]; + if (mem->size) { + req.hw_stats_drop_base_addr_valid = 1; + req.hw_stats_drop_base_addr = + ipa->mem_offset + mem->offset; + req.hw_stats_drop_size_valid = 1; + req.hw_stats_drop_size = ipa->mem_offset + mem->size; + } + } + + return &req; +} + +/* Send an INIT_DRIVER request to the modem, and wait for it to complete. */ +static void ipa_client_init_driver_work(struct work_struct *work) +{ + unsigned long timeout = msecs_to_jiffies(QMI_INIT_DRIVER_TIMEOUT); + const struct ipa_init_modem_driver_req *req; + struct ipa_qmi *ipa_qmi; + struct qmi_handle *qmi; + struct qmi_txn txn; + struct device *dev; + struct ipa *ipa; + int ret; + + ipa_qmi = container_of(work, struct ipa_qmi, init_driver_work); + qmi = &ipa_qmi->client_handle, + + ipa = container_of(ipa_qmi, struct ipa, qmi); + dev = &ipa->pdev->dev; + + ret = qmi_txn_init(qmi, &txn, NULL, NULL); + if (ret < 0) { + dev_err(dev, "error %d preparing init driver request\n", ret); + return; + } + + /* Send the request, and if successful wait for its response */ + req = init_modem_driver_req(ipa_qmi); + ret = qmi_send_request(qmi, &ipa_qmi->modem_sq, &txn, + IPA_QMI_INIT_DRIVER, IPA_QMI_INIT_DRIVER_REQ_SZ, + ipa_init_modem_driver_req_ei, req); + if (ret) + dev_err(dev, "error %d sending init driver request\n", ret); + else if ((ret = qmi_txn_wait(&txn, timeout))) + dev_err(dev, "error %d awaiting init driver response\n", ret); + + if (!ret) { + ipa_qmi->modem_ready = true; + ipa_qmi_ready(ipa_qmi); /* We might be ready now */ + } else { + /* If any error occurs we need to cancel the transaction */ + qmi_txn_cancel(&txn); + } +} + +/* The modem server is now available. We will send an INIT_DRIVER request + * to the modem, but can't wait for it to complete in this callback thread. + * Schedule a worker on the global workqueue to do that for us. + */ +static int +ipa_client_new_server(struct qmi_handle *qmi, struct qmi_service *svc) +{ + struct ipa_qmi *ipa_qmi; + + ipa_qmi = container_of(qmi, struct ipa_qmi, client_handle); + + ipa_qmi->modem_sq.sq_family = AF_QIPCRTR; + ipa_qmi->modem_sq.sq_node = svc->node; + ipa_qmi->modem_sq.sq_port = svc->port; + + schedule_work(&ipa_qmi->init_driver_work); + + return 0; +} + +static struct qmi_ops ipa_client_ops = { + .new_server = ipa_client_new_server, +}; + +/* This is called by ipa_setup(). We can be informed via remoteproc that + * the modem has shut down, in which case this function will be called + * again to prepare for it coming back up again. + */ +int ipa_qmi_setup(struct ipa *ipa) +{ + struct ipa_qmi *ipa_qmi = &ipa->qmi; + int ret; + + ipa_qmi->initial_boot = true; + + /* The server handle is used to handle the DRIVER_INIT_COMPLETE + * request on the first modem boot. It also receives the + * INDICATION_REGISTER request on the first boot and (optionally) + * subsequent boots. The INIT_COMPLETE indication message is + * sent over the server handle if requested. + */ + ret = qmi_handle_init(&ipa_qmi->server_handle, + IPA_QMI_SERVER_MAX_RCV_SZ, &ipa_server_ops, + ipa_server_msg_handlers); + if (ret) + return ret; + + ret = qmi_add_server(&ipa_qmi->server_handle, IPA_HOST_SERVICE_SVC_ID, + IPA_HOST_SVC_VERS, IPA_HOST_SERVICE_INS_ID); + if (ret) + goto err_server_handle_release; + + /* The client handle is only used for sending an INIT_DRIVER request + * to the modem, and receiving its response message. + */ + ret = qmi_handle_init(&ipa_qmi->client_handle, + IPA_QMI_CLIENT_MAX_RCV_SZ, &ipa_client_ops, + ipa_client_msg_handlers); + if (ret) + goto err_server_handle_release; + + /* We need this ready before the service lookup is added */ + INIT_WORK(&ipa_qmi->init_driver_work, ipa_client_init_driver_work); + + ret = qmi_add_lookup(&ipa_qmi->client_handle, IPA_MODEM_SERVICE_SVC_ID, + IPA_MODEM_SVC_VERS, IPA_MODEM_SERVICE_INS_ID); + if (ret) + goto err_client_handle_release; + + return 0; + +err_client_handle_release: + /* Releasing the handle also removes registered lookups */ + qmi_handle_release(&ipa_qmi->client_handle); + memset(&ipa_qmi->client_handle, 0, sizeof(ipa_qmi->client_handle)); +err_server_handle_release: + /* Releasing the handle also removes registered services */ + qmi_handle_release(&ipa_qmi->server_handle); + memset(&ipa_qmi->server_handle, 0, sizeof(ipa_qmi->server_handle)); + + return ret; +} + +void ipa_qmi_teardown(struct ipa *ipa) +{ + cancel_work_sync(&ipa->qmi.init_driver_work); + + qmi_handle_release(&ipa->qmi.client_handle); + memset(&ipa->qmi.client_handle, 0, sizeof(ipa->qmi.client_handle)); + + qmi_handle_release(&ipa->qmi.server_handle); + memset(&ipa->qmi.server_handle, 0, sizeof(ipa->qmi.server_handle)); +} diff --git a/drivers/net/ipa/ipa_qmi.h b/drivers/net/ipa/ipa_qmi.h new file mode 100644 index 000000000000..3993687593d0 --- /dev/null +++ b/drivers/net/ipa/ipa_qmi.h @@ -0,0 +1,41 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +/* Copyright (c) 2018, The Linux Foundation. All rights reserved. + * Copyright (C) 2018-2020 Linaro Ltd. + */ +#ifndef _IPA_QMI_H_ +#define _IPA_QMI_H_ + +#include <linux/types.h> +#include <linux/soc/qcom/qmi.h> + +struct ipa; + +/** + * struct ipa_qmi - QMI state associated with an IPA + * @client_handle - used to send an QMI requests to the modem + * @server_handle - used to handle QMI requests from the modem + * @initialized - whether QMI initialization has completed + * @indication_register_received - tracks modem request receipt + * @init_driver_response_received - tracks modem response receipt + */ +struct ipa_qmi { + struct qmi_handle client_handle; + struct qmi_handle server_handle; + + /* Information used for the client handle */ + struct sockaddr_qrtr modem_sq; + struct work_struct init_driver_work; + + /* Flags used in negotiating readiness */ + bool initial_boot; + bool uc_ready; + bool modem_ready; + bool indication_requested; + bool indication_sent; +}; + +int ipa_qmi_setup(struct ipa *ipa); +void ipa_qmi_teardown(struct ipa *ipa); + +#endif /* !_IPA_QMI_H_ */ diff --git a/drivers/net/ipa/ipa_qmi_msg.c b/drivers/net/ipa/ipa_qmi_msg.c new file mode 100644 index 000000000000..03a1d0e55964 --- /dev/null +++ b/drivers/net/ipa/ipa_qmi_msg.c @@ -0,0 +1,663 @@ +// SPDX-License-Identifier: GPL-2.0 + +/* Copyright (c) 2018, The Linux Foundation. All rights reserved. + * Copyright (C) 2018-2020 Linaro Ltd. + */ +#include <linux/stddef.h> +#include <linux/soc/qcom/qmi.h> + +#include "ipa_qmi_msg.h" + +/* QMI message structure definition for struct ipa_indication_register_req */ +struct qmi_elem_info ipa_indication_register_req_ei[] = { + { + .data_type = QMI_OPT_FLAG, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_indication_register_req, + master_driver_init_complete_valid), + .tlv_type = 0x10, + .offset = offsetof(struct ipa_indication_register_req, + master_driver_init_complete_valid), + }, + { + .data_type = QMI_UNSIGNED_1_BYTE, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_indication_register_req, + master_driver_init_complete), + .tlv_type = 0x10, + .offset = offsetof(struct ipa_indication_register_req, + master_driver_init_complete), + }, + { + .data_type = QMI_OPT_FLAG, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_indication_register_req, + data_usage_quota_reached_valid), + .tlv_type = 0x11, + .offset = offsetof(struct ipa_indication_register_req, + data_usage_quota_reached_valid), + }, + { + .data_type = QMI_UNSIGNED_1_BYTE, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_indication_register_req, + data_usage_quota_reached), + .tlv_type = 0x11, + .offset = offsetof(struct ipa_indication_register_req, + data_usage_quota_reached), + }, + { + .data_type = QMI_OPT_FLAG, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_indication_register_req, + ipa_mhi_ready_ind_valid), + .tlv_type = 0x11, + .offset = offsetof(struct ipa_indication_register_req, + ipa_mhi_ready_ind_valid), + }, + { + .data_type = QMI_UNSIGNED_1_BYTE, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_indication_register_req, + ipa_mhi_ready_ind), + .tlv_type = 0x11, + .offset = offsetof(struct ipa_indication_register_req, + ipa_mhi_ready_ind), + }, + { + .data_type = QMI_EOTI, + }, +}; + +/* QMI message structure definition for struct ipa_indication_register_rsp */ +struct qmi_elem_info ipa_indication_register_rsp_ei[] = { + { + .data_type = QMI_STRUCT, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_indication_register_rsp, + rsp), + .tlv_type = 0x02, + .offset = offsetof(struct ipa_indication_register_rsp, + rsp), + .ei_array = qmi_response_type_v01_ei, + }, + { + .data_type = QMI_EOTI, + }, +}; + +/* QMI message structure definition for struct ipa_driver_init_complete_req */ +struct qmi_elem_info ipa_driver_init_complete_req_ei[] = { + { + .data_type = QMI_UNSIGNED_1_BYTE, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_driver_init_complete_req, + status), + .tlv_type = 0x01, + .offset = offsetof(struct ipa_driver_init_complete_req, + status), + }, + { + .data_type = QMI_EOTI, + }, +}; + +/* QMI message structure definition for struct ipa_driver_init_complete_rsp */ +struct qmi_elem_info ipa_driver_init_complete_rsp_ei[] = { + { + .data_type = QMI_STRUCT, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_driver_init_complete_rsp, + rsp), + .tlv_type = 0x02, + .elem_size = offsetof(struct ipa_driver_init_complete_rsp, + rsp), + .ei_array = qmi_response_type_v01_ei, + }, + { + .data_type = QMI_EOTI, + }, +}; + +/* QMI message structure definition for struct ipa_init_complete_ind */ +struct qmi_elem_info ipa_init_complete_ind_ei[] = { + { + .data_type = QMI_STRUCT, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_init_complete_ind, + status), + .tlv_type = 0x02, + .elem_size = offsetof(struct ipa_init_complete_ind, + status), + .ei_array = qmi_response_type_v01_ei, + }, + { + .data_type = QMI_EOTI, + }, +}; + +/* QMI message structure definition for struct ipa_mem_bounds */ +struct qmi_elem_info ipa_mem_bounds_ei[] = { + { + .data_type = QMI_UNSIGNED_4_BYTE, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_mem_bounds, start), + .offset = offsetof(struct ipa_mem_bounds, start), + }, + { + .data_type = QMI_UNSIGNED_4_BYTE, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_mem_bounds, end), + .offset = offsetof(struct ipa_mem_bounds, end), + }, + { + .data_type = QMI_EOTI, + }, +}; + +/* QMI message structure definition for struct ipa_mem_array */ +struct qmi_elem_info ipa_mem_array_ei[] = { + { + .data_type = QMI_UNSIGNED_4_BYTE, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_mem_array, start), + .offset = offsetof(struct ipa_mem_array, start), + }, + { + .data_type = QMI_UNSIGNED_4_BYTE, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_mem_array, count), + .offset = offsetof(struct ipa_mem_array, count), + }, + { + .data_type = QMI_EOTI, + }, +}; + +/* QMI message structure definition for struct ipa_mem_range */ +struct qmi_elem_info ipa_mem_range_ei[] = { + { + .data_type = QMI_UNSIGNED_4_BYTE, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_mem_range, start), + .offset = offsetof(struct ipa_mem_range, start), + }, + { + .data_type = QMI_UNSIGNED_4_BYTE, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_mem_range, size), + .offset = offsetof(struct ipa_mem_range, size), + }, + { + .data_type = QMI_EOTI, + }, +}; + +/* QMI message structure definition for struct ipa_init_modem_driver_req */ +struct qmi_elem_info ipa_init_modem_driver_req_ei[] = { + { + .data_type = QMI_OPT_FLAG, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_init_modem_driver_req, + platform_type_valid), + .tlv_type = 0x10, + .elem_size = offsetof(struct ipa_init_modem_driver_req, + platform_type_valid), + }, + { + .data_type = QMI_SIGNED_4_BYTE_ENUM, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_init_modem_driver_req, + platform_type), + .tlv_type = 0x10, + .offset = offsetof(struct ipa_init_modem_driver_req, + platform_type), + }, + { + .data_type = QMI_OPT_FLAG, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_init_modem_driver_req, + hdr_tbl_info_valid), + .tlv_type = 0x11, + .offset = offsetof(struct ipa_init_modem_driver_req, + hdr_tbl_info_valid), + }, + { + .data_type = QMI_STRUCT, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_init_modem_driver_req, + hdr_tbl_info), + .tlv_type = 0x11, + .offset = offsetof(struct ipa_init_modem_driver_req, + hdr_tbl_info), + .ei_array = ipa_mem_bounds_ei, + }, + { + .data_type = QMI_OPT_FLAG, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_init_modem_driver_req, + v4_route_tbl_info_valid), + .tlv_type = 0x12, + .offset = offsetof(struct ipa_init_modem_driver_req, + v4_route_tbl_info_valid), + }, + { + .data_type = QMI_STRUCT, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_init_modem_driver_req, + v4_route_tbl_info), + .tlv_type = 0x12, + .offset = offsetof(struct ipa_init_modem_driver_req, + v4_route_tbl_info), + .ei_array = ipa_mem_array_ei, + }, + { + .data_type = QMI_OPT_FLAG, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_init_modem_driver_req, + v6_route_tbl_info_valid), + .tlv_type = 0x13, + .offset = offsetof(struct ipa_init_modem_driver_req, + v6_route_tbl_info_valid), + }, + { + .data_type = QMI_STRUCT, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_init_modem_driver_req, + v6_route_tbl_info), + .tlv_type = 0x13, + .offset = offsetof(struct ipa_init_modem_driver_req, + v6_route_tbl_info), + .ei_array = ipa_mem_array_ei, + }, + { + .data_type = QMI_OPT_FLAG, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_init_modem_driver_req, + v4_filter_tbl_start_valid), + .tlv_type = 0x14, + .offset = offsetof(struct ipa_init_modem_driver_req, + v4_filter_tbl_start_valid), + }, + { + .data_type = QMI_UNSIGNED_4_BYTE, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_init_modem_driver_req, + v4_filter_tbl_start), + .tlv_type = 0x14, + .offset = offsetof(struct ipa_init_modem_driver_req, + v4_filter_tbl_start), + }, + { + .data_type = QMI_OPT_FLAG, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_init_modem_driver_req, + v6_filter_tbl_start_valid), + .tlv_type = 0x15, + .offset = offsetof(struct ipa_init_modem_driver_req, + v6_filter_tbl_start_valid), + }, + { + .data_type = QMI_UNSIGNED_4_BYTE, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_init_modem_driver_req, + v6_filter_tbl_start), + .tlv_type = 0x15, + .offset = offsetof(struct ipa_init_modem_driver_req, + v6_filter_tbl_start), + }, + { + .data_type = QMI_OPT_FLAG, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_init_modem_driver_req, + modem_mem_info_valid), + .tlv_type = 0x16, + .offset = offsetof(struct ipa_init_modem_driver_req, + modem_mem_info_valid), + }, + { + .data_type = QMI_STRUCT, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_init_modem_driver_req, + modem_mem_info), + .tlv_type = 0x16, + .offset = offsetof(struct ipa_init_modem_driver_req, + modem_mem_info), + .ei_array = ipa_mem_range_ei, + }, + { + .data_type = QMI_OPT_FLAG, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_init_modem_driver_req, + ctrl_comm_dest_end_pt_valid), + .tlv_type = 0x17, + .offset = offsetof(struct ipa_init_modem_driver_req, + ctrl_comm_dest_end_pt_valid), + }, + { + .data_type = QMI_UNSIGNED_4_BYTE, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_init_modem_driver_req, + ctrl_comm_dest_end_pt), + .tlv_type = 0x17, + .offset = offsetof(struct ipa_init_modem_driver_req, + ctrl_comm_dest_end_pt), + }, + { + .data_type = QMI_OPT_FLAG, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_init_modem_driver_req, + skip_uc_load_valid), + .tlv_type = 0x18, + .offset = offsetof(struct ipa_init_modem_driver_req, + skip_uc_load_valid), + }, + { + .data_type = QMI_UNSIGNED_1_BYTE, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_init_modem_driver_req, + skip_uc_load), + .tlv_type = 0x18, + .offset = offsetof(struct ipa_init_modem_driver_req, + skip_uc_load), + }, + { + .data_type = QMI_OPT_FLAG, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_init_modem_driver_req, + hdr_proc_ctx_tbl_info_valid), + .tlv_type = 0x19, + .offset = offsetof(struct ipa_init_modem_driver_req, + hdr_proc_ctx_tbl_info_valid), + }, + { + .data_type = QMI_STRUCT, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_init_modem_driver_req, + hdr_proc_ctx_tbl_info), + .tlv_type = 0x19, + .offset = offsetof(struct ipa_init_modem_driver_req, + hdr_proc_ctx_tbl_info), + .ei_array = ipa_mem_bounds_ei, + }, + { + .data_type = QMI_OPT_FLAG, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_init_modem_driver_req, + zip_tbl_info_valid), + .tlv_type = 0x1a, + .offset = offsetof(struct ipa_init_modem_driver_req, + zip_tbl_info_valid), + }, + { + .data_type = QMI_STRUCT, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_init_modem_driver_req, + zip_tbl_info), + .tlv_type = 0x1a, + .offset = offsetof(struct ipa_init_modem_driver_req, + zip_tbl_info), + .ei_array = ipa_mem_bounds_ei, + }, + { + .data_type = QMI_OPT_FLAG, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_init_modem_driver_req, + v4_hash_route_tbl_info_valid), + .tlv_type = 0x1b, + .offset = offsetof(struct ipa_init_modem_driver_req, + v4_hash_route_tbl_info_valid), + }, + { + .data_type = QMI_STRUCT, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_init_modem_driver_req, + v4_hash_route_tbl_info), + .tlv_type = 0x1b, + .offset = offsetof(struct ipa_init_modem_driver_req, + v4_hash_route_tbl_info), + .ei_array = ipa_mem_array_ei, + }, + { + .data_type = QMI_OPT_FLAG, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_init_modem_driver_req, + v6_hash_route_tbl_info_valid), + .tlv_type = 0x1c, + .offset = offsetof(struct ipa_init_modem_driver_req, + v6_hash_route_tbl_info_valid), + }, + { + .data_type = QMI_STRUCT, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_init_modem_driver_req, + v6_hash_route_tbl_info), + .tlv_type = 0x1c, + .offset = offsetof(struct ipa_init_modem_driver_req, + v6_hash_route_tbl_info), + .ei_array = ipa_mem_array_ei, + }, + { + .data_type = QMI_OPT_FLAG, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_init_modem_driver_req, + v4_hash_filter_tbl_start_valid), + .tlv_type = 0x1d, + .offset = offsetof(struct ipa_init_modem_driver_req, + v4_hash_filter_tbl_start_valid), + }, + { + .data_type = QMI_UNSIGNED_4_BYTE, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_init_modem_driver_req, + v4_hash_filter_tbl_start), + .tlv_type = 0x1d, + .offset = offsetof(struct ipa_init_modem_driver_req, + v4_hash_filter_tbl_start), + }, + { + .data_type = QMI_OPT_FLAG, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_init_modem_driver_req, + v6_hash_filter_tbl_start_valid), + .tlv_type = 0x1e, + .offset = offsetof(struct ipa_init_modem_driver_req, + v6_hash_filter_tbl_start_valid), + }, + { + .data_type = QMI_UNSIGNED_4_BYTE, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_init_modem_driver_req, + v6_hash_filter_tbl_start), + .tlv_type = 0x1e, + .offset = offsetof(struct ipa_init_modem_driver_req, + v6_hash_filter_tbl_start), + }, + { + .data_type = QMI_OPT_FLAG, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_init_modem_driver_req, + hw_stats_quota_base_addr_valid), + .tlv_type = 0x1f, + .offset = offsetof(struct ipa_init_modem_driver_req, + hw_stats_quota_base_addr_valid), + }, + { + .data_type = QMI_SIGNED_4_BYTE_ENUM, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_init_modem_driver_req, + hw_stats_quota_base_addr), + .tlv_type = 0x1f, + .offset = offsetof(struct ipa_init_modem_driver_req, + hw_stats_quota_base_addr), + }, + { + .data_type = QMI_OPT_FLAG, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_init_modem_driver_req, + hw_stats_quota_size_valid), + .tlv_type = 0x1f, + .offset = offsetof(struct ipa_init_modem_driver_req, + hw_stats_quota_size_valid), + }, + { + .data_type = QMI_SIGNED_4_BYTE_ENUM, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_init_modem_driver_req, + hw_stats_quota_size), + .tlv_type = 0x1f, + .offset = offsetof(struct ipa_init_modem_driver_req, + hw_stats_quota_size), + }, + { + .data_type = QMI_OPT_FLAG, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_init_modem_driver_req, + hw_stats_drop_size_valid), + .tlv_type = 0x1f, + .offset = offsetof(struct ipa_init_modem_driver_req, + hw_stats_drop_size_valid), + }, + { + .data_type = QMI_SIGNED_4_BYTE_ENUM, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_init_modem_driver_req, + hw_stats_drop_size), + .tlv_type = 0x1f, + .offset = offsetof(struct ipa_init_modem_driver_req, + hw_stats_drop_size), + }, + { + .data_type = QMI_EOTI, + }, +}; + +/* QMI message structure definition for struct ipa_init_modem_driver_rsp */ +struct qmi_elem_info ipa_init_modem_driver_rsp_ei[] = { + { + .data_type = QMI_STRUCT, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_init_modem_driver_rsp, + rsp), + .tlv_type = 0x02, + .offset = offsetof(struct ipa_init_modem_driver_rsp, + rsp), + .ei_array = qmi_response_type_v01_ei, + }, + { + .data_type = QMI_OPT_FLAG, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_init_modem_driver_rsp, + ctrl_comm_dest_end_pt_valid), + .tlv_type = 0x10, + .offset = offsetof(struct ipa_init_modem_driver_rsp, + ctrl_comm_dest_end_pt_valid), + }, + { + .data_type = QMI_UNSIGNED_4_BYTE, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_init_modem_driver_rsp, + ctrl_comm_dest_end_pt), + .tlv_type = 0x10, + .offset = offsetof(struct ipa_init_modem_driver_rsp, + ctrl_comm_dest_end_pt), + }, + { + .data_type = QMI_OPT_FLAG, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_init_modem_driver_rsp, + default_end_pt_valid), + .tlv_type = 0x11, + .offset = offsetof(struct ipa_init_modem_driver_rsp, + default_end_pt_valid), + }, + { + .data_type = QMI_UNSIGNED_4_BYTE, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_init_modem_driver_rsp, + default_end_pt), + .tlv_type = 0x11, + .offset = offsetof(struct ipa_init_modem_driver_rsp, + default_end_pt), + }, + { + .data_type = QMI_OPT_FLAG, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_init_modem_driver_rsp, + modem_driver_init_pending_valid), + .tlv_type = 0x12, + .offset = offsetof(struct ipa_init_modem_driver_rsp, + modem_driver_init_pending_valid), + }, + { + .data_type = QMI_UNSIGNED_1_BYTE, + .elem_len = 1, + .elem_size = + sizeof_field(struct ipa_init_modem_driver_rsp, + modem_driver_init_pending), + .tlv_type = 0x12, + .offset = offsetof(struct ipa_init_modem_driver_rsp, + modem_driver_init_pending), + }, + { + .data_type = QMI_EOTI, + }, +}; diff --git a/drivers/net/ipa/ipa_qmi_msg.h b/drivers/net/ipa/ipa_qmi_msg.h new file mode 100644 index 000000000000..cfac456cea0c --- /dev/null +++ b/drivers/net/ipa/ipa_qmi_msg.h @@ -0,0 +1,252 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +/* Copyright (c) 2018, The Linux Foundation. All rights reserved. + * Copyright (C) 2018-2020 Linaro Ltd. + */ +#ifndef _IPA_QMI_MSG_H_ +#define _IPA_QMI_MSG_H_ + +/* === Only "ipa_qmi" and "ipa_qmi_msg.c" should include this file === */ + +#include <linux/types.h> +#include <linux/soc/qcom/qmi.h> + +/* Request/response/indication QMI message ids used for IPA. Receiving + * end issues a response for requests; indications require no response. + */ +#define IPA_QMI_INDICATION_REGISTER 0x20 /* modem -> AP request */ +#define IPA_QMI_INIT_DRIVER 0x21 /* AP -> modem request */ +#define IPA_QMI_INIT_COMPLETE 0x22 /* AP -> modem indication */ +#define IPA_QMI_DRIVER_INIT_COMPLETE 0x35 /* modem -> AP request */ + +/* The maximum size required for message types. These sizes include + * the message data, along with type (1 byte) and length (2 byte) + * information for each field. The qmi_send_*() interfaces require + * the message size to be provided. + */ +#define IPA_QMI_INDICATION_REGISTER_REQ_SZ 12 /* -> server handle */ +#define IPA_QMI_INDICATION_REGISTER_RSP_SZ 7 /* <- server handle */ +#define IPA_QMI_INIT_DRIVER_REQ_SZ 162 /* client handle -> */ +#define IPA_QMI_INIT_DRIVER_RSP_SZ 25 /* client handle <- */ +#define IPA_QMI_INIT_COMPLETE_IND_SZ 7 /* <- server handle */ +#define IPA_QMI_DRIVER_INIT_COMPLETE_REQ_SZ 4 /* -> server handle */ +#define IPA_QMI_DRIVER_INIT_COMPLETE_RSP_SZ 7 /* <- server handle */ + +/* Maximum size of messages we expect the AP to receive (max of above) */ +#define IPA_QMI_SERVER_MAX_RCV_SZ 8 +#define IPA_QMI_CLIENT_MAX_RCV_SZ 25 + +/* Request message for the IPA_QMI_INDICATION_REGISTER request */ +struct ipa_indication_register_req { + u8 master_driver_init_complete_valid; + u8 master_driver_init_complete; + u8 data_usage_quota_reached_valid; + u8 data_usage_quota_reached; + u8 ipa_mhi_ready_ind_valid; + u8 ipa_mhi_ready_ind; +}; + +/* The response to a IPA_QMI_INDICATION_REGISTER request consists only of + * a standard QMI response. + */ +struct ipa_indication_register_rsp { + struct qmi_response_type_v01 rsp; +}; + +/* Request message for the IPA_QMI_DRIVER_INIT_COMPLETE request */ +struct ipa_driver_init_complete_req { + u8 status; +}; + +/* The response to a IPA_QMI_DRIVER_INIT_COMPLETE request consists only + * of a standard QMI response. + */ +struct ipa_driver_init_complete_rsp { + struct qmi_response_type_v01 rsp; +}; + +/* The message for the IPA_QMI_INIT_COMPLETE_IND indication consists + * only of a standard QMI response. + */ +struct ipa_init_complete_ind { + struct qmi_response_type_v01 status; +}; + +/* The AP tells the modem its platform type. We assume Android. */ +enum ipa_platform_type { + IPA_QMI_PLATFORM_TYPE_INVALID = 0, /* Invalid */ + IPA_QMI_PLATFORM_TYPE_TN = 1, /* Data card */ + IPA_QMI_PLATFORM_TYPE_LE = 2, /* Data router */ + IPA_QMI_PLATFORM_TYPE_MSM_ANDROID = 3, /* Android MSM */ + IPA_QMI_PLATFORM_TYPE_MSM_WINDOWS = 4, /* Windows MSM */ + IPA_QMI_PLATFORM_TYPE_MSM_QNX_V01 = 5, /* QNX MSM */ +}; + +/* This defines the start and end offset of a range of memory. Both + * fields are offsets relative to the start of IPA shared memory. + * The end value is the last addressable byte *within* the range. + */ +struct ipa_mem_bounds { + u32 start; + u32 end; +}; + +/* This defines the location and size of an array. The start value + * is an offset relative to the start of IPA shared memory. The + * size of the array is implied by the number of entries (the entry + * size is assumed to be known). + */ +struct ipa_mem_array { + u32 start; + u32 count; +}; + +/* This defines the location and size of a range of memory. The + * start is an offset relative to the start of IPA shared memory. + * This differs from the ipa_mem_bounds structure in that the size + * (in bytes) of the memory region is specified rather than the + * offset of its last byte. + */ +struct ipa_mem_range { + u32 start; + u32 size; +}; + +/* The message for the IPA_QMI_INIT_DRIVER request contains information + * from the AP that affects modem initialization. + */ +struct ipa_init_modem_driver_req { + u8 platform_type_valid; + u32 platform_type; /* enum ipa_platform_type */ + + /* Modem header table information. This defines the IPA shared + * memory in which the modem may insert header table entries. + */ + u8 hdr_tbl_info_valid; + struct ipa_mem_bounds hdr_tbl_info; + + /* Routing table information. These define the location and size of + * non-hashable IPv4 and IPv6 filter tables. The start values are + * offsets relative to the start of IPA shared memory. + */ + u8 v4_route_tbl_info_valid; + struct ipa_mem_array v4_route_tbl_info; + u8 v6_route_tbl_info_valid; + struct ipa_mem_array v6_route_tbl_info; + + /* Filter table information. These define the location of the + * non-hashable IPv4 and IPv6 filter tables. The start values are + * offsets relative to the start of IPA shared memory. + */ + u8 v4_filter_tbl_start_valid; + u32 v4_filter_tbl_start; + u8 v6_filter_tbl_start_valid; + u32 v6_filter_tbl_start; + + /* Modem memory information. This defines the location and + * size of memory available for the modem to use. + */ + u8 modem_mem_info_valid; + struct ipa_mem_range modem_mem_info; + + /* This defines the destination endpoint on the AP to which + * the modem driver can send control commands. Must be less + * than ipa_endpoint_max(). + */ + u8 ctrl_comm_dest_end_pt_valid; + u32 ctrl_comm_dest_end_pt; + + /* This defines whether the modem should load the microcontroller + * or not. It is unnecessary to reload it if the modem is being + * restarted. + * + * NOTE: this field is named "is_ssr_bootup" elsewhere. + */ + u8 skip_uc_load_valid; + u8 skip_uc_load; + + /* Processing context memory information. This defines the memory in + * which the modem may insert header processing context table entries. + */ + u8 hdr_proc_ctx_tbl_info_valid; + struct ipa_mem_bounds hdr_proc_ctx_tbl_info; + + /* Compression command memory information. This defines the memory + * in which the modem may insert compression/decompression commands. + */ + u8 zip_tbl_info_valid; + struct ipa_mem_bounds zip_tbl_info; + + /* Routing table information. These define the location and size + * of hashable IPv4 and IPv6 filter tables. The start values are + * offsets relative to the start of IPA shared memory. + */ + u8 v4_hash_route_tbl_info_valid; + struct ipa_mem_array v4_hash_route_tbl_info; + u8 v6_hash_route_tbl_info_valid; + struct ipa_mem_array v6_hash_route_tbl_info; + + /* Filter table information. These define the location and size + * of hashable IPv4 and IPv6 filter tables. The start values are + * offsets relative to the start of IPA shared memory. + */ + u8 v4_hash_filter_tbl_start_valid; + u32 v4_hash_filter_tbl_start; + u8 v6_hash_filter_tbl_start_valid; + u32 v6_hash_filter_tbl_start; + + /* Statistics information. These define the locations of the + * first and last statistics sub-regions. (IPA v4.0 and above) + */ + u8 hw_stats_quota_base_addr_valid; + u32 hw_stats_quota_base_addr; + u8 hw_stats_quota_size_valid; + u32 hw_stats_quota_size; + u8 hw_stats_drop_base_addr_valid; + u32 hw_stats_drop_base_addr; + u8 hw_stats_drop_size_valid; + u32 hw_stats_drop_size; +}; + +/* The response to a IPA_QMI_INIT_DRIVER request begins with a standard + * QMI response, but contains other information as well. Currently we + * simply wait for the the INIT_DRIVER transaction to complete and + * ignore any other data that might be returned. + */ +struct ipa_init_modem_driver_rsp { + struct qmi_response_type_v01 rsp; + + /* This defines the destination endpoint on the modem to which + * the AP driver can send control commands. Must be less than + * ipa_endpoint_max(). + */ + u8 ctrl_comm_dest_end_pt_valid; + u32 ctrl_comm_dest_end_pt; + + /* This defines the default endpoint. The AP driver is not + * required to configure the hardware with this value. Must + * be less than ipa_endpoint_max(). + */ + u8 default_end_pt_valid; + u32 default_end_pt; + + /* This defines whether a second handshake is required to complete + * initialization. + */ + u8 modem_driver_init_pending_valid; + u8 modem_driver_init_pending; +}; + +/* Message structure definitions defined in "ipa_qmi_msg.c" */ +extern struct qmi_elem_info ipa_indication_register_req_ei[]; +extern struct qmi_elem_info ipa_indication_register_rsp_ei[]; +extern struct qmi_elem_info ipa_driver_init_complete_req_ei[]; +extern struct qmi_elem_info ipa_driver_init_complete_rsp_ei[]; +extern struct qmi_elem_info ipa_init_complete_ind_ei[]; +extern struct qmi_elem_info ipa_mem_bounds_ei[]; +extern struct qmi_elem_info ipa_mem_array_ei[]; +extern struct qmi_elem_info ipa_mem_range_ei[]; +extern struct qmi_elem_info ipa_init_modem_driver_req_ei[]; +extern struct qmi_elem_info ipa_init_modem_driver_rsp_ei[]; + +#endif /* !_IPA_QMI_MSG_H_ */ diff --git a/drivers/net/ipa/ipa_smp2p.c b/drivers/net/ipa/ipa_smp2p.c new file mode 100644 index 000000000000..4d33aa7ebfbb --- /dev/null +++ b/drivers/net/ipa/ipa_smp2p.c @@ -0,0 +1,335 @@ +// SPDX-License-Identifier: GPL-2.0 + +/* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved. + * Copyright (C) 2019-2020 Linaro Ltd. + */ + +#include <linux/types.h> +#include <linux/device.h> +#include <linux/interrupt.h> +#include <linux/notifier.h> +#include <linux/soc/qcom/smem.h> +#include <linux/soc/qcom/smem_state.h> + +#include "ipa_smp2p.h" +#include "ipa.h" +#include "ipa_uc.h" +#include "ipa_clock.h" + +/** + * DOC: IPA SMP2P communication with the modem + * + * SMP2P is a primitive communication mechanism available between the AP and + * the modem. The IPA driver uses this for two purposes: to enable the modem + * to state that the GSI hardware is ready to use; and to communicate the + * state of the IPA clock in the event of a crash. + * + * GSI needs to have early initialization completed before it can be used. + * This initialization is done either by Trust Zone or by the modem. In the + * latter case, the modem uses an SMP2P interrupt to tell the AP IPA driver + * when the GSI is ready to use. + * + * The modem is also able to inquire about the current state of the IPA + * clock by trigging another SMP2P interrupt to the AP. We communicate + * whether the clock is enabled using two SMP2P state bits--one to + * indicate the clock state (on or off), and a second to indicate the + * clock state bit is valid. The modem will poll the valid bit until it + * is set, and at that time records whether the AP has the IPA clock enabled. + * + * Finally, if the AP kernel panics, we update the SMP2P state bits even if + * we never receive an interrupt from the modem requesting this. + */ + +/** + * struct ipa_smp2p - IPA SMP2P information + * @ipa: IPA pointer + * @valid_state: SMEM state indicating enabled state is valid + * @enabled_state: SMEM state to indicate clock is enabled + * @valid_bit: Valid bit in 32-bit SMEM state mask + * @enabled_bit: Enabled bit in 32-bit SMEM state mask + * @enabled_bit: Enabled bit in 32-bit SMEM state mask + * @clock_query_irq: IPA interrupt triggered by modem for clock query + * @setup_ready_irq: IPA interrupt triggered by modem to signal GSI ready + * @clock_on: Whether IPA clock is on + * @notified: Whether modem has been notified of clock state + * @disabled: Whether setup ready interrupt handling is disabled + * @mutex mutex: Motex protecting ready interrupt/shutdown interlock + * @panic_notifier: Panic notifier structure +*/ +struct ipa_smp2p { + struct ipa *ipa; + struct qcom_smem_state *valid_state; + struct qcom_smem_state *enabled_state; + u32 valid_bit; + u32 enabled_bit; + u32 clock_query_irq; + u32 setup_ready_irq; + bool clock_on; + bool notified; + bool disabled; + struct mutex mutex; + struct notifier_block panic_notifier; +}; + +/** + * ipa_smp2p_notify() - use SMP2P to tell modem about IPA clock state + * @smp2p: SMP2P information + * + * This is called either when the modem has requested it (by triggering + * the modem clock query IPA interrupt) or whenever the AP is shutting down + * (via a panic notifier). It sets the two SMP2P state bits--one saying + * whether the IPA clock is running, and the other indicating the first bit + * is valid. + */ +static void ipa_smp2p_notify(struct ipa_smp2p *smp2p) +{ + u32 value; + u32 mask; + + if (smp2p->notified) + return; + + smp2p->clock_on = ipa_clock_get_additional(smp2p->ipa); + + /* Signal whether the clock is enabled */ + mask = BIT(smp2p->enabled_bit); + value = smp2p->clock_on ? mask : 0; + qcom_smem_state_update_bits(smp2p->enabled_state, mask, value); + + /* Now indicate that the enabled flag is valid */ + mask = BIT(smp2p->valid_bit); + value = mask; + qcom_smem_state_update_bits(smp2p->valid_state, mask, value); + + smp2p->notified = true; +} + +/* Threaded IRQ handler for modem "ipa-clock-query" SMP2P interrupt */ +static irqreturn_t ipa_smp2p_modem_clk_query_isr(int irq, void *dev_id) +{ + struct ipa_smp2p *smp2p = dev_id; + + ipa_smp2p_notify(smp2p); + + return IRQ_HANDLED; +} + +static int ipa_smp2p_panic_notifier(struct notifier_block *nb, + unsigned long action, void *data) +{ + struct ipa_smp2p *smp2p; + + smp2p = container_of(nb, struct ipa_smp2p, panic_notifier); + + ipa_smp2p_notify(smp2p); + + if (smp2p->clock_on) + ipa_uc_panic_notifier(smp2p->ipa); + + return NOTIFY_DONE; +} + +static int ipa_smp2p_panic_notifier_register(struct ipa_smp2p *smp2p) +{ + /* IPA panic handler needs to run before modem shuts down */ + smp2p->panic_notifier.notifier_call = ipa_smp2p_panic_notifier; + smp2p->panic_notifier.priority = INT_MAX; /* Do it early */ + + return atomic_notifier_chain_register(&panic_notifier_list, + &smp2p->panic_notifier); +} + +static void ipa_smp2p_panic_notifier_unregister(struct ipa_smp2p *smp2p) +{ + atomic_notifier_chain_unregister(&panic_notifier_list, + &smp2p->panic_notifier); +} + +/* Threaded IRQ handler for modem "ipa-setup-ready" SMP2P interrupt */ +static irqreturn_t ipa_smp2p_modem_setup_ready_isr(int irq, void *dev_id) +{ + struct ipa_smp2p *smp2p = dev_id; + + mutex_lock(&smp2p->mutex); + + if (!smp2p->disabled) { + int ret; + + ret = ipa_setup(smp2p->ipa); + if (ret) + dev_err(&smp2p->ipa->pdev->dev, + "error %d from ipa_setup()\n", ret); + smp2p->disabled = true; + } + + mutex_unlock(&smp2p->mutex); + + return IRQ_HANDLED; +} + +/* Initialize SMP2P interrupts */ +static int ipa_smp2p_irq_init(struct ipa_smp2p *smp2p, const char *name, + irq_handler_t handler) +{ + struct device *dev = &smp2p->ipa->pdev->dev; + unsigned int irq; + int ret; + + ret = platform_get_irq_byname(smp2p->ipa->pdev, name); + if (ret <= 0) { + dev_err(dev, "DT error %d getting \"%s\" IRQ property\n", + ret, name); + return ret ? : -EINVAL; + } + irq = ret; + + ret = request_threaded_irq(irq, NULL, handler, 0, name, smp2p); + if (ret) { + dev_err(dev, "error %d requesting \"%s\" IRQ\n", ret, name); + return ret; + } + + return irq; +} + +static void ipa_smp2p_irq_exit(struct ipa_smp2p *smp2p, u32 irq) +{ + free_irq(irq, smp2p); +} + +/* Drop the clock reference if it was taken in ipa_smp2p_notify() */ +static void ipa_smp2p_clock_release(struct ipa *ipa) +{ + if (!ipa->smp2p->clock_on) + return; + + ipa_clock_put(ipa); + ipa->smp2p->clock_on = false; +} + +/* Initialize the IPA SMP2P subsystem */ +int ipa_smp2p_init(struct ipa *ipa, bool modem_init) +{ + struct qcom_smem_state *enabled_state; + struct device *dev = &ipa->pdev->dev; + struct qcom_smem_state *valid_state; + struct ipa_smp2p *smp2p; + u32 enabled_bit; + u32 valid_bit; + int ret; + + valid_state = qcom_smem_state_get(dev, "ipa-clock-enabled-valid", + &valid_bit); + if (IS_ERR(valid_state)) + return PTR_ERR(valid_state); + if (valid_bit >= 32) /* BITS_PER_U32 */ + return -EINVAL; + + enabled_state = qcom_smem_state_get(dev, "ipa-clock-enabled", + &enabled_bit); + if (IS_ERR(enabled_state)) + return PTR_ERR(enabled_state); + if (enabled_bit >= 32) /* BITS_PER_U32 */ + return -EINVAL; + + smp2p = kzalloc(sizeof(*smp2p), GFP_KERNEL); + if (!smp2p) + return -ENOMEM; + + smp2p->ipa = ipa; + + /* These fields are needed by the clock query interrupt + * handler, so initialize them now. + */ + mutex_init(&smp2p->mutex); + smp2p->valid_state = valid_state; + smp2p->valid_bit = valid_bit; + smp2p->enabled_state = enabled_state; + smp2p->enabled_bit = enabled_bit; + + /* We have enough information saved to handle notifications */ + ipa->smp2p = smp2p; + + ret = ipa_smp2p_irq_init(smp2p, "ipa-clock-query", + ipa_smp2p_modem_clk_query_isr); + if (ret < 0) + goto err_null_smp2p; + smp2p->clock_query_irq = ret; + + ret = ipa_smp2p_panic_notifier_register(smp2p); + if (ret) + goto err_irq_exit; + + if (modem_init) { + /* Result will be non-zero (negative for error) */ + ret = ipa_smp2p_irq_init(smp2p, "ipa-setup-ready", + ipa_smp2p_modem_setup_ready_isr); + if (ret < 0) + goto err_notifier_unregister; + smp2p->setup_ready_irq = ret; + } + + return 0; + +err_notifier_unregister: + ipa_smp2p_panic_notifier_unregister(smp2p); +err_irq_exit: + ipa_smp2p_irq_exit(smp2p, smp2p->clock_query_irq); +err_null_smp2p: + ipa->smp2p = NULL; + mutex_destroy(&smp2p->mutex); + kfree(smp2p); + + return ret; +} + +void ipa_smp2p_exit(struct ipa *ipa) +{ + struct ipa_smp2p *smp2p = ipa->smp2p; + + if (smp2p->setup_ready_irq) + ipa_smp2p_irq_exit(smp2p, smp2p->setup_ready_irq); + ipa_smp2p_panic_notifier_unregister(smp2p); + ipa_smp2p_irq_exit(smp2p, smp2p->clock_query_irq); + /* We won't get notified any more; drop clock reference (if any) */ + ipa_smp2p_clock_release(ipa); + ipa->smp2p = NULL; + mutex_destroy(&smp2p->mutex); + kfree(smp2p); +} + +void ipa_smp2p_disable(struct ipa *ipa) +{ + struct ipa_smp2p *smp2p = ipa->smp2p; + + if (!smp2p->setup_ready_irq) + return; + + mutex_lock(&smp2p->mutex); + + smp2p->disabled = true; + + mutex_unlock(&smp2p->mutex); +} + +/* Reset state tracking whether we have notified the modem */ +void ipa_smp2p_notify_reset(struct ipa *ipa) +{ + struct ipa_smp2p *smp2p = ipa->smp2p; + u32 mask; + + if (!smp2p->notified) + return; + + ipa_smp2p_clock_release(ipa); + + /* Reset the clock enabled valid flag */ + mask = BIT(smp2p->valid_bit); + qcom_smem_state_update_bits(smp2p->valid_state, mask, 0); + + /* Mark the clock disabled for good measure... */ + mask = BIT(smp2p->enabled_bit); + qcom_smem_state_update_bits(smp2p->enabled_state, mask, 0); + + smp2p->notified = false; +} diff --git a/drivers/net/ipa/ipa_smp2p.h b/drivers/net/ipa/ipa_smp2p.h new file mode 100644 index 000000000000..1f65cdc9d406 --- /dev/null +++ b/drivers/net/ipa/ipa_smp2p.h @@ -0,0 +1,48 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +/* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved. + * Copyright (C) 2019-2020 Linaro Ltd. + */ +#ifndef _IPA_SMP2P_H_ +#define _IPA_SMP2P_H_ + +#include <linux/types.h> + +struct ipa; + +/** + * ipa_smp2p_init() - Initialize the IPA SMP2P subsystem + * @ipa: IPA pointer + * @modem_init: Whether the modem is responsible for GSI initialization + * + * @Return: 0 if successful, or a negative error code + * + */ +int ipa_smp2p_init(struct ipa *ipa, bool modem_init); + +/** + * ipa_smp2p_exit() - Inverse of ipa_smp2p_init() + * @ipa: IPA pointer + */ +void ipa_smp2p_exit(struct ipa *ipa); + +/** + * ipa_smp2p_disable() - Prevent "ipa-setup-ready" interrupt handling + * @IPA: IPA pointer + * + * Prevent handling of the "setup ready" interrupt from the modem. + * This is used before initiating shutdown of the driver. + */ +void ipa_smp2p_disable(struct ipa *ipa); + +/** + * ipa_smp2p_notify_reset() - Reset modem notification state + * @ipa: IPA pointer + * + * If the modem crashes it queries the IPA clock state. In cleaning + * up after such a crash this is used to reset some state maintained + * for managing this notification. + */ +void ipa_smp2p_notify_reset(struct ipa *ipa); + +#endif /* _IPA_SMP2P_H_ */ |