| /* |
| * MobiCore KernelApi module |
| * |
| * <-- Copyright Giesecke & Devrient GmbH 2009-2012 --> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| */ |
| #include <linux/module.h> |
| #include <linux/init.h> |
| |
| #include <linux/kernel.h> |
| #include <linux/sched.h> |
| #include <linux/netlink.h> |
| #include <net/sock.h> |
| #include <net/net_namespace.h> |
| #include <linux/list.h> |
| |
| #include "public/mobicore_driver_api.h" |
| #include "public/mobicore_driver_cmd.h" |
| #include "include/mcinq.h" |
| #include "device.h" |
| #include "session.h" |
| |
| /* device list */ |
| LIST_HEAD(devices); |
| |
| static struct mcore_device_t *resolve_device_id(uint32_t device_id) |
| { |
| struct mcore_device_t *tmp; |
| struct list_head *pos; |
| |
| /* Get mcore_device_t for device_id */ |
| list_for_each(pos, &devices) { |
| tmp = list_entry(pos, struct mcore_device_t, list); |
| if (tmp->device_id == device_id) |
| return tmp; |
| } |
| return NULL; |
| } |
| |
| static void add_device(struct mcore_device_t *device) |
| { |
| list_add_tail(&(device->list), &devices); |
| } |
| |
| static bool remove_device(uint32_t device_id) |
| { |
| struct mcore_device_t *tmp; |
| struct list_head *pos, *q; |
| |
| list_for_each_safe(pos, q, &devices) { |
| tmp = list_entry(pos, struct mcore_device_t, list); |
| if (tmp->device_id == device_id) { |
| list_del(pos); |
| mcore_device_cleanup(tmp); |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| enum mc_result mc_open_device(uint32_t device_id) |
| { |
| enum mc_result mc_result = MC_DRV_OK; |
| struct connection *dev_con = NULL; |
| |
| MCDRV_DBG_VERBOSE(mc_kapi, "===%s()===", __func__); |
| |
| do { |
| struct mcore_device_t *device = resolve_device_id(device_id); |
| if (device != NULL) { |
| MCDRV_DBG_ERROR(mc_kapi, |
| "Device %d already opened", device_id); |
| mc_result = MC_DRV_ERR_INVALID_OPERATION; |
| break; |
| } |
| |
| /* Open new connection to device */ |
| dev_con = connection_new(); |
| if (!connection_connect(dev_con, MC_DAEMON_PID)) { |
| MCDRV_DBG_ERROR( |
| mc_kapi, |
| "Could not setup netlink connection to PID %u", |
| MC_DAEMON_PID); |
| mc_result = MC_DRV_ERR_DAEMON_UNREACHABLE; |
| break; |
| } |
| |
| /* Forward device open to the daemon and read result */ |
| struct mc_drv_cmd_open_device_t mc_drv_cmd_open_device = { |
| { |
| MC_DRV_CMD_OPEN_DEVICE |
| }, |
| { |
| device_id |
| } |
| }; |
| |
| int len = connection_write_data( |
| dev_con, |
| &mc_drv_cmd_open_device, |
| sizeof(struct mc_drv_cmd_open_device_t)); |
| if (len < 0) { |
| MCDRV_DBG_ERROR(mc_kapi, |
| "CMD_OPEN_DEVICE writeCmd failed %d", |
| len); |
| mc_result = MC_DRV_ERR_DAEMON_UNREACHABLE; |
| break; |
| } |
| |
| struct mc_drv_response_header_t rsp_header; |
| len = connection_read_datablock( |
| dev_con, |
| &rsp_header, |
| sizeof(rsp_header)); |
| if (len != sizeof(rsp_header)) { |
| MCDRV_DBG_ERROR(mc_kapi, |
| "CMD_OPEN_DEVICE readRsp failed %d", |
| len); |
| mc_result = MC_DRV_ERR_DAEMON_UNREACHABLE; |
| break; |
| } |
| if (rsp_header.response_id != MC_DRV_RSP_OK) { |
| MCDRV_DBG_ERROR(mc_kapi, |
| "CMD_OPEN_DEVICE failed, respId=%d", |
| rsp_header.response_id); |
| switch (rsp_header.response_id) { |
| case MC_DRV_RSP_PAYLOAD_LENGTH_ERROR: |
| mc_result = MC_DRV_ERR_DAEMON_UNREACHABLE; |
| break; |
| case MC_DRV_INVALID_DEVICE_NAME: |
| mc_result = MC_DRV_ERR_UNKNOWN_DEVICE; |
| break; |
| case MC_DRV_RSP_DEVICE_ALREADY_OPENED: |
| default: |
| mc_result = MC_DRV_ERR_INVALID_OPERATION; |
| break; |
| } |
| break; |
| } |
| |
| /* there is no payload to read */ |
| |
| device = mcore_device_create(device_id, dev_con); |
| if (!mcore_device_open(device, MC_DRV_MOD_DEVNODE_FULLPATH)) { |
| mcore_device_cleanup(device); |
| MCDRV_DBG_ERROR(mc_kapi, |
| "could not open device file: %s", |
| MC_DRV_MOD_DEVNODE_FULLPATH); |
| mc_result = MC_DRV_ERR_INVALID_DEVICE_FILE; |
| break; |
| } |
| |
| add_device(device); |
| |
| } while (false); |
| |
| if (mc_result != MC_DRV_OK) |
| connection_cleanup(dev_con); |
| |
| return mc_result; |
| } |
| EXPORT_SYMBOL(mc_open_device); |
| |
| enum mc_result mc_close_device(uint32_t device_id) |
| { |
| enum mc_result mc_result = MC_DRV_OK; |
| |
| MCDRV_DBG_VERBOSE(mc_kapi, "===%s()===", __func__); |
| |
| do { |
| struct mcore_device_t *device = resolve_device_id(device_id); |
| if (device == NULL) { |
| MCDRV_DBG_ERROR(mc_kapi, "Device not found"); |
| mc_result = MC_DRV_ERR_UNKNOWN_DEVICE; |
| break; |
| } |
| struct connection *dev_con = device->connection; |
| |
| /* Return if not all sessions have been closed */ |
| if (mcore_device_has_sessions(device)) { |
| MCDRV_DBG_ERROR(mc_kapi, |
| "cannot close with sessions pending"); |
| mc_result = MC_DRV_ERR_SESSION_PENDING; |
| break; |
| } |
| |
| struct mc_drv_cmd_close_device_t mc_drv_cmd_close_device = { |
| { |
| MC_DRV_CMD_CLOSE_DEVICE |
| } |
| }; |
| int len = connection_write_data( |
| dev_con, |
| &mc_drv_cmd_close_device, |
| sizeof(struct mc_drv_cmd_close_device_t)); |
| /* ignore error, but log details */ |
| if (len < 0) { |
| MCDRV_DBG_ERROR(mc_kapi, |
| "CMD_CLOSE_DEVICE writeCmd failed %d", |
| len); |
| mc_result = MC_DRV_ERR_DAEMON_UNREACHABLE; |
| } |
| |
| struct mc_drv_response_header_t rsp_header; |
| len = connection_read_datablock( |
| dev_con, |
| &rsp_header, |
| sizeof(rsp_header)); |
| if (len != sizeof(rsp_header)) { |
| MCDRV_DBG_ERROR(mc_kapi, |
| "CMD_CLOSE_DEVICE readResp failed %d", |
| len); |
| mc_result = MC_DRV_ERR_DAEMON_UNREACHABLE; |
| break; |
| } |
| |
| if (rsp_header.response_id != MC_DRV_RSP_OK) { |
| MCDRV_DBG_ERROR(mc_kapi, |
| "CMD_CLOSE_DEVICE failed, respId=%d", |
| rsp_header.response_id); |
| mc_result = MC_DRV_ERR_DAEMON_UNREACHABLE; |
| break; |
| } |
| |
| remove_device(device_id); |
| |
| } while (false); |
| |
| return mc_result; |
| } |
| EXPORT_SYMBOL(mc_close_device); |
| |
| enum mc_result mc_open_session(struct mc_session_handle *session, |
| const struct mc_uuid_t *uuid, |
| uint8_t *tci, uint32_t len) |
| { |
| enum mc_result mc_result = MC_DRV_OK; |
| |
| MCDRV_DBG_VERBOSE(mc_kapi, "===%s()===", __func__); |
| |
| do { |
| if (session == NULL) { |
| MCDRV_DBG_ERROR(mc_kapi, "Session is null"); |
| mc_result = MC_DRV_ERR_INVALID_PARAMETER; |
| break; |
| } |
| if (uuid == NULL) { |
| MCDRV_DBG_ERROR(mc_kapi, "UUID is null"); |
| mc_result = MC_DRV_ERR_INVALID_PARAMETER; |
| break; |
| } |
| if (tci == NULL) { |
| MCDRV_DBG_ERROR(mc_kapi, "TCI is null"); |
| mc_result = MC_DRV_ERR_INVALID_PARAMETER; |
| break; |
| } |
| if (len > MC_MAX_TCI_LEN) { |
| MCDRV_DBG_ERROR(mc_kapi, "TCI length is longer than %d", |
| MC_MAX_TCI_LEN); |
| mc_result = MC_DRV_ERR_INVALID_PARAMETER; |
| break; |
| } |
| |
| /* Get the device associated with the given session */ |
| struct mcore_device_t *device = |
| resolve_device_id(session->device_id); |
| if (device == NULL) { |
| MCDRV_DBG_ERROR(mc_kapi, "Device not found"); |
| mc_result = MC_DRV_ERR_UNKNOWN_DEVICE; |
| break; |
| } |
| struct connection *dev_con = device->connection; |
| |
| /* Get the physical address of the given TCI */ |
| struct wsm *wsm = |
| mcore_device_find_contiguous_wsm(device, tci); |
| if (wsm == NULL) { |
| MCDRV_DBG_ERROR(mc_kapi, |
| "Could not resolve TCI phy address "); |
| mc_result = MC_DRV_ERR_INVALID_PARAMETER; |
| break; |
| } |
| |
| if (wsm->len < len) { |
| MCDRV_DBG_ERROR(mc_kapi, |
| "length is more than allocated TCI"); |
| mc_result = MC_DRV_ERR_INVALID_PARAMETER; |
| break; |
| } |
| |
| /* Prepare open session command */ |
| struct mc_drv_cmd_open_session_t cmdOpenSession = { |
| { |
| MC_DRV_CMD_OPEN_SESSION |
| }, |
| { |
| session->device_id, |
| *uuid, |
| (uint32_t)(wsm->phys_addr) & 0xFFF, |
| wsm->handle, |
| len |
| } |
| }; |
| |
| /* Transmit command data */ |
| int len = connection_write_data(dev_con, |
| &cmdOpenSession, |
| sizeof(cmdOpenSession)); |
| if (len != sizeof(cmdOpenSession)) { |
| MCDRV_DBG_ERROR(mc_kapi, |
| "CMD_OPEN_SESSION writeData failed %d", |
| len); |
| mc_result = MC_DRV_ERR_DAEMON_UNREACHABLE; |
| break; |
| } |
| |
| /* Read command response */ |
| |
| /* read header first */ |
| struct mc_drv_response_header_t rsp_header; |
| len = connection_read_datablock(dev_con, |
| &rsp_header, |
| sizeof(rsp_header)); |
| if (len != sizeof(rsp_header)) { |
| MCDRV_DBG_ERROR(mc_kapi, |
| "CMD_OPEN_SESSION readResp failed %d", |
| len); |
| mc_result = MC_DRV_ERR_DAEMON_UNREACHABLE; |
| break; |
| } |
| |
| if (rsp_header.response_id != MC_DRV_RSP_OK) { |
| MCDRV_DBG_ERROR(mc_kapi, |
| "CMD_OPEN_SESSION failed, respId=%d", |
| rsp_header.response_id); |
| switch (rsp_header.response_id) { |
| case MC_DRV_RSP_TRUSTLET_NOT_FOUND: |
| mc_result = MC_DRV_ERR_INVALID_DEVICE_FILE; |
| break; |
| case MC_DRV_RSP_PAYLOAD_LENGTH_ERROR: |
| case MC_DRV_RSP_DEVICE_NOT_OPENED: |
| case MC_DRV_RSP_FAILED: |
| default: |
| mc_result = MC_DRV_ERR_DAEMON_UNREACHABLE; |
| break; |
| } |
| break; |
| } |
| |
| /* read payload */ |
| struct mc_drv_rsp_open_session_payload_t |
| rsp_open_session_payload; |
| len = connection_read_datablock( |
| dev_con, |
| &rsp_open_session_payload, |
| sizeof(rsp_open_session_payload)); |
| if (len != sizeof(rsp_open_session_payload)) { |
| MCDRV_DBG_ERROR(mc_kapi, |
| "CMD_OPEN_SESSION readPayload fail %d", |
| len); |
| mc_result = MC_DRV_ERR_DAEMON_UNREACHABLE; |
| break; |
| } |
| |
| /* Register session with handle */ |
| session->session_id = rsp_open_session_payload.session_id; |
| |
| /* Set up second channel for notifications */ |
| struct connection *session_connection = connection_new(); |
| |
| if (!connection_connect(session_connection, MC_DAEMON_PID)) { |
| MCDRV_DBG_ERROR( |
| mc_kapi, |
| "Could not setup netlink connection to PID %u", |
| MC_DAEMON_PID); |
| connection_cleanup(session_connection); |
| mc_result = MC_DRV_ERR_DAEMON_UNREACHABLE; |
| break; |
| } |
| |
| /* Write command to use channel for notifications */ |
| struct mc_drv_cmd_nqconnect_t cmd_nqconnect = { |
| { |
| MC_DRV_CMD_NQ_CONNECT |
| }, |
| { |
| session->device_id, |
| session->session_id, |
| rsp_open_session_payload.device_session_id, |
| rsp_open_session_payload.session_magic |
| } |
| }; |
| connection_write_data(session_connection, |
| &cmd_nqconnect, |
| sizeof(cmd_nqconnect)); |
| |
| /* Read command response, header first */ |
| len = connection_read_datablock(session_connection, |
| &rsp_header, |
| sizeof(rsp_header)); |
| if (len != sizeof(rsp_header)) { |
| MCDRV_DBG_ERROR(mc_kapi, |
| "CMD_NQ_CONNECT readRsp failed %d", |
| len); |
| connection_cleanup(session_connection); |
| mc_result = MC_DRV_ERR_DAEMON_UNREACHABLE; |
| break; |
| } |
| |
| if (rsp_header.response_id != MC_DRV_RSP_OK) { |
| MCDRV_DBG_ERROR(mc_kapi, |
| "CMD_NQ_CONNECT failed, respId=%d", |
| rsp_header.response_id); |
| connection_cleanup(session_connection); |
| mc_result = MC_DRV_ERR_NQ_FAILED; |
| break; |
| } |
| |
| /* there is no payload. */ |
| |
| /* Session established, new session object must be created */ |
| mcore_device_create_new_session(device, |
| session->session_id, |
| session_connection); |
| |
| } while (false); |
| |
| return mc_result; |
| } |
| EXPORT_SYMBOL(mc_open_session); |
| |
| enum mc_result mc_close_session(struct mc_session_handle *session) |
| { |
| enum mc_result mc_result = MC_DRV_OK; |
| |
| MCDRV_DBG_VERBOSE(mc_kapi, "===%s()===", __func__); |
| |
| do { |
| if (session == NULL) { |
| MCDRV_DBG_ERROR(mc_kapi, "Session is null"); |
| mc_result = MC_DRV_ERR_INVALID_PARAMETER; |
| break; |
| } |
| |
| struct mcore_device_t *device = |
| resolve_device_id(session->device_id); |
| if (device == NULL) { |
| MCDRV_DBG_ERROR(mc_kapi, "Device not found"); |
| mc_result = MC_DRV_ERR_UNKNOWN_DEVICE; |
| break; |
| } |
| struct connection *dev_con = device->connection; |
| |
| struct session *nq_session = |
| mcore_device_resolve_session_id(device, |
| session->session_id); |
| |
| if (nq_session == NULL) { |
| MCDRV_DBG_ERROR(mc_kapi, "Session not found"); |
| mc_result = MC_DRV_ERR_UNKNOWN_SESSION; |
| break; |
| } |
| |
| /* Write close session command */ |
| struct mc_drv_cmd_close_session_t cmd_close_session = { |
| { |
| MC_DRV_CMD_CLOSE_SESSION |
| }, |
| { |
| session->session_id, |
| } |
| }; |
| connection_write_data(dev_con, |
| &cmd_close_session, |
| sizeof(cmd_close_session)); |
| |
| /* Read command response */ |
| struct mc_drv_response_header_t rsp_header; |
| int len = connection_read_datablock(dev_con, |
| &rsp_header, |
| sizeof(rsp_header)); |
| if (len != sizeof(rsp_header)) { |
| MCDRV_DBG_ERROR(mc_kapi, |
| "CMD_CLOSE_SESSION readRsp failed %d", |
| len); |
| mc_result = MC_DRV_ERR_DAEMON_UNREACHABLE; |
| break; |
| } |
| |
| if (rsp_header.response_id != MC_DRV_RSP_OK) { |
| MCDRV_DBG_ERROR(mc_kapi, |
| "CMD_CLOSE_SESSION failed, respId=%d", |
| rsp_header.response_id); |
| mc_result = MC_DRV_ERR_UNKNOWN_DEVICE; |
| break; |
| } |
| |
| mcore_device_remove_session(device, session->session_id); |
| mc_result = MC_DRV_OK; |
| |
| } while (false); |
| |
| return mc_result; |
| } |
| EXPORT_SYMBOL(mc_close_session); |
| |
| enum mc_result mc_notify(struct mc_session_handle *session) |
| { |
| enum mc_result mc_result = MC_DRV_OK; |
| |
| MCDRV_DBG_VERBOSE(mc_kapi, "===%s()===", __func__); |
| |
| do { |
| if (session == NULL) { |
| MCDRV_DBG_ERROR(mc_kapi, "Session is null"); |
| mc_result = MC_DRV_ERR_INVALID_PARAMETER; |
| break; |
| } |
| |
| struct mcore_device_t *device = |
| resolve_device_id(session->device_id); |
| if (device == NULL) { |
| MCDRV_DBG_ERROR(mc_kapi, "Device not found"); |
| mc_result = MC_DRV_ERR_UNKNOWN_DEVICE; |
| break; |
| } |
| struct connection *dev_con = device->connection; |
| |
| struct session *nqsession = |
| mcore_device_resolve_session_id(device, session->session_id); |
| if (nqsession == NULL) { |
| MCDRV_DBG_ERROR(mc_kapi, "Session not found"); |
| mc_result = MC_DRV_ERR_UNKNOWN_SESSION; |
| break; |
| } |
| |
| struct mc_drv_cmd_notify_t cmd_notify = { |
| { |
| MC_DRV_CMD_NOTIFY |
| }, |
| { |
| session->session_id |
| } |
| }; |
| |
| connection_write_data(dev_con, |
| &cmd_notify, |
| sizeof(cmd_notify)); |
| |
| /* Daemon will not return a response */ |
| |
| } while (false); |
| |
| return mc_result; |
| } |
| EXPORT_SYMBOL(mc_notify); |
| |
| enum mc_result mc_wait_notification(struct mc_session_handle *session, |
| int32_t timeout) |
| { |
| enum mc_result mc_result = MC_DRV_OK; |
| |
| MCDRV_DBG_VERBOSE(mc_kapi, "===%s()===", __func__); |
| |
| do { |
| if (session == NULL) { |
| mc_result = MC_DRV_ERR_INVALID_PARAMETER; |
| break; |
| } |
| |
| struct mcore_device_t *device = |
| resolve_device_id(session->device_id); |
| if (device == NULL) { |
| MCDRV_DBG_ERROR(mc_kapi, "Device not found"); |
| mc_result = MC_DRV_ERR_UNKNOWN_DEVICE; |
| break; |
| } |
| |
| struct session *nq_session = |
| mcore_device_resolve_session_id(device, |
| session->session_id); |
| if (nq_session == NULL) { |
| MCDRV_DBG_ERROR(mc_kapi, "Session not found"); |
| mc_result = MC_DRV_ERR_UNKNOWN_SESSION; |
| break; |
| } |
| |
| struct connection *nqconnection = |
| nq_session->notification_connection; |
| uint32_t count = 0; |
| |
| /* Read notification queue till it's empty */ |
| for (;;) { |
| struct notification notification; |
| ssize_t num_read = |
| connection_read_data(nqconnection, |
| ¬ification, |
| sizeof(notification), |
| timeout); |
| /* |
| * Exit on timeout in first run. Later runs have |
| * timeout set to 0. |
| * -2 means, there is no more data. |
| */ |
| if (count == 0 && num_read == -2) { |
| MCDRV_DBG_ERROR(mc_kapi, "read timeout"); |
| mc_result = MC_DRV_ERR_TIMEOUT; |
| break; |
| } |
| /* |
| * After first notification the queue will be |
| * drained, Thus we set no timeout for the |
| * following reads |
| */ |
| timeout = 0; |
| |
| if (num_read != sizeof(struct notification)) { |
| if (count == 0) { |
| /* failure in first read, notify it */ |
| mc_result = MC_DRV_ERR_NOTIFICATION; |
| MCDRV_DBG_ERROR( |
| mc_kapi, |
| "read notification failed, " |
| "%i bytes received", (int)num_read); |
| break; |
| } else { |
| /* |
| * Read of the n-th notification |
| * failed/timeout. We don't tell the |
| * caller, as we got valid notifications |
| * before. |
| */ |
| mc_result = MC_DRV_OK; |
| break; |
| } |
| } |
| |
| count++; |
| MCDRV_DBG_VERBOSE(mc_kapi, |
| "count=%d, SessionID=%d, Payload=%d", |
| count, |
| notification.session_id, |
| notification.payload); |
| |
| if (notification.payload != 0) { |
| /* Session end point died -> store exit code */ |
| session_set_error_info(nq_session, |
| notification.payload); |
| |
| mc_result = MC_DRV_INFO_NOTIFICATION; |
| break; |
| } |
| } /* for(;;) */ |
| |
| } while (false); |
| |
| return mc_result; |
| } |
| EXPORT_SYMBOL(mc_wait_notification); |
| |
| enum mc_result mc_malloc_wsm(uint32_t device_id, uint32_t align, uint32_t len, |
| uint8_t **wsm, uint32_t wsm_flags) |
| { |
| enum mc_result mc_result = MC_DRV_ERR_UNKNOWN; |
| |
| MCDRV_DBG_VERBOSE(mc_kapi, "===%s()===", __func__); |
| |
| do { |
| struct mcore_device_t *device = resolve_device_id(device_id); |
| if (device == NULL) { |
| MCDRV_DBG_ERROR(mc_kapi, "Device not found"); |
| mc_result = MC_DRV_ERR_UNKNOWN_DEVICE; |
| break; |
| } |
| if (wsm == NULL) { |
| mc_result = MC_DRV_ERR_INVALID_PARAMETER; |
| break; |
| } |
| |
| struct wsm *wsm_stack = |
| mcore_device_allocate_contiguous_wsm(device, len); |
| if (wsm_stack == NULL) { |
| MCDRV_DBG_ERROR(mc_kapi, "Allocation of WSM failed"); |
| mc_result = MC_DRV_ERR_NO_FREE_MEMORY; |
| break; |
| } |
| |
| *wsm = (uint8_t *)wsm_stack->virt_addr; |
| mc_result = MC_DRV_OK; |
| |
| } while (false); |
| |
| return mc_result; |
| } |
| EXPORT_SYMBOL(mc_malloc_wsm); |
| |
| enum mc_result mc_free_wsm(uint32_t device_id, uint8_t *wsm) |
| { |
| enum mc_result mc_result = MC_DRV_ERR_UNKNOWN; |
| struct mcore_device_t *device; |
| |
| |
| MCDRV_DBG_VERBOSE(mc_kapi, "===%s()===", __func__); |
| |
| do { |
| |
| /* Get the device associated wit the given session */ |
| device = resolve_device_id(device_id); |
| if (device == NULL) { |
| MCDRV_DBG_ERROR(mc_kapi, "Device not found"); |
| mc_result = MC_DRV_ERR_UNKNOWN_DEVICE; |
| break; |
| } |
| |
| /* find WSM object */ |
| struct wsm *wsm_stack = |
| mcore_device_find_contiguous_wsm(device, wsm); |
| if (wsm_stack == NULL) { |
| MCDRV_DBG_ERROR(mc_kapi, "unknown address"); |
| mc_result = MC_DRV_ERR_INVALID_PARAMETER; |
| break; |
| } |
| |
| /* Free the given virtual address */ |
| if (!mcore_device_free_contiguous_wsm(device, wsm_stack)) { |
| MCDRV_DBG_ERROR(mc_kapi, |
| "Free of virtual address failed"); |
| mc_result = MC_DRV_ERR_FREE_MEMORY_FAILED; |
| break; |
| } |
| mc_result = MC_DRV_OK; |
| |
| } while (false); |
| |
| return mc_result; |
| } |
| EXPORT_SYMBOL(mc_free_wsm); |
| |
| enum mc_result mc_map(struct mc_session_handle *session_handle, void *buf, |
| uint32_t buf_len, struct mc_bulk_map *map_info) |
| { |
| enum mc_result mc_result = MC_DRV_ERR_UNKNOWN; |
| |
| MCDRV_DBG_VERBOSE(mc_kapi, "===%s()===", __func__); |
| |
| do { |
| if (session_handle == NULL) { |
| MCDRV_DBG_ERROR(mc_kapi, "session_handle is null"); |
| mc_result = MC_DRV_ERR_INVALID_PARAMETER; |
| break; |
| } |
| if (map_info == NULL) { |
| MCDRV_DBG_ERROR(mc_kapi, "map_info is null"); |
| mc_result = MC_DRV_ERR_INVALID_PARAMETER; |
| break; |
| } |
| if (buf == NULL) { |
| MCDRV_DBG_ERROR(mc_kapi, "buf is null"); |
| mc_result = MC_DRV_ERR_INVALID_PARAMETER; |
| break; |
| } |
| |
| /* Determine device the session belongs to */ |
| struct mcore_device_t *device = |
| resolve_device_id(session_handle->device_id); |
| |
| if (device == NULL) { |
| MCDRV_DBG_ERROR(mc_kapi, "Device not found"); |
| mc_result = MC_DRV_ERR_UNKNOWN_DEVICE; |
| break; |
| } |
| struct connection *dev_con = device->connection; |
| |
| /* Get session */ |
| uint32_t session_id = session_handle->session_id; |
| struct session *session = |
| mcore_device_resolve_session_id(device, |
| session_id); |
| if (session == NULL) { |
| MCDRV_DBG_ERROR(mc_kapi, "Session not found"); |
| mc_result = MC_DRV_ERR_UNKNOWN_SESSION; |
| break; |
| } |
| |
| /* |
| * Register mapped bulk buffer to Kernel Module and keep mapped |
| * bulk buffer in mind |
| */ |
| struct bulk_buffer_descriptor *bulk_buf = |
| session_add_bulk_buf(session, buf, buf_len); |
| if (bulk_buf == NULL) { |
| MCDRV_DBG_ERROR(mc_kapi, "Error mapping bulk buffer"); |
| mc_result = MC_DRV_ERR_BULK_MAPPING; |
| break; |
| } |
| |
| /* Prepare map command */ |
| struct mc_drv_cmd_map_bulk_mem_t mc_drv_cmd_map_bulk_mem = { |
| { |
| MC_DRV_CMD_MAP_BULK_BUF |
| }, |
| { |
| session->session_id, |
| bulk_buf->handle, |
| (uint32_t)bulk_buf->phys_addr_wsm_l2, |
| (uint32_t)(bulk_buf->virt_addr) & 0xFFF, |
| bulk_buf->len |
| } |
| }; |
| |
| /* Transmit map command to MobiCore device */ |
| connection_write_data(dev_con, |
| &mc_drv_cmd_map_bulk_mem, |
| sizeof(mc_drv_cmd_map_bulk_mem)); |
| |
| /* Read command response */ |
| struct mc_drv_response_header_t rsp_header; |
| int len = connection_read_datablock(dev_con, |
| &rsp_header, |
| sizeof(rsp_header)); |
| if (len != sizeof(rsp_header)) { |
| MCDRV_DBG_ERROR(mc_kapi, |
| "CMD_MAP_BULK_BUF readRsp failed %d", |
| len); |
| mc_result = MC_DRV_ERR_DAEMON_UNREACHABLE; |
| break; |
| } |
| |
| if (rsp_header.response_id != MC_DRV_RSP_OK) { |
| MCDRV_DBG_ERROR(mc_kapi, |
| "CMD_MAP_BULK_BUF failed, respId=%d", |
| rsp_header.response_id); |
| |
| mc_result = MC_DRV_ERR_DAEMON_UNREACHABLE; |
| |
| /* |
| * Unregister mapped bulk buffer from Kernel Module and |
| * remove mapped bulk buffer from session maintenance |
| */ |
| if (!session_remove_bulk_buf(session, buf)) { |
| /* Removing of bulk buffer not possible */ |
| MCDRV_DBG_ERROR(mc_kapi, |
| "Unreg of bulk memory failed"); |
| } |
| break; |
| } |
| |
| struct mc_drv_rsp_map_bulk_mem_payload_t |
| rsp_map_bulk_mem_payload; |
| connection_read_datablock(dev_con, |
| &rsp_map_bulk_mem_payload, |
| sizeof(rsp_map_bulk_mem_payload)); |
| |
| /* Set mapping info for Trustlet */ |
| map_info->secure_virt_addr = |
| (void *)(rsp_map_bulk_mem_payload.secure_virtual_adr); |
| map_info->secure_virt_len = buf_len; |
| mc_result = MC_DRV_OK; |
| |
| } while (false); |
| |
| return mc_result; |
| } |
| EXPORT_SYMBOL(mc_map); |
| |
| enum mc_result mc_unmap(struct mc_session_handle *session_handle, void *buf, |
| struct mc_bulk_map *map_info) |
| { |
| enum mc_result mc_result = MC_DRV_ERR_UNKNOWN; |
| |
| MCDRV_DBG_VERBOSE(mc_kapi, "===%s()===", __func__); |
| |
| do { |
| if (session_handle == NULL) { |
| MCDRV_DBG_ERROR(mc_kapi, "session_handle is null"); |
| mc_result = MC_DRV_ERR_INVALID_PARAMETER; |
| break; |
| } |
| if (map_info == NULL) { |
| MCDRV_DBG_ERROR(mc_kapi, "map_info is null"); |
| mc_result = MC_DRV_ERR_INVALID_PARAMETER; |
| break; |
| } |
| if (buf == NULL) { |
| MCDRV_DBG_ERROR(mc_kapi, "buf is null"); |
| mc_result = MC_DRV_ERR_INVALID_PARAMETER; |
| break; |
| } |
| |
| /* Determine device the session belongs to */ |
| struct mcore_device_t *device = |
| resolve_device_id(session_handle->device_id); |
| if (device == NULL) { |
| MCDRV_DBG_ERROR(mc_kapi, "Device not found"); |
| mc_result = MC_DRV_ERR_UNKNOWN_DEVICE; |
| break; |
| } |
| struct connection *dev_con = device->connection; |
| |
| /* Get session */ |
| uint32_t session_id = session_handle->session_id; |
| struct session *session = |
| mcore_device_resolve_session_id(device, |
| session_id); |
| if (session == NULL) { |
| MCDRV_DBG_ERROR(mc_kapi, "Session not found"); |
| mc_result = MC_DRV_ERR_UNKNOWN_SESSION; |
| break; |
| } |
| |
| uint32_t handle = session_find_bulk_buf(session, buf); |
| if (handle == 0) { |
| MCDRV_DBG_ERROR(mc_kapi, "Buffer not found"); |
| mc_result = MC_DRV_ERR_BULK_UNMAPPING; |
| break; |
| } |
| |
| |
| /* Prepare unmap command */ |
| struct mc_drv_cmd_unmap_bulk_mem_t cmd_unmap_bulk_mem = { |
| { |
| MC_DRV_CMD_UNMAP_BULK_BUF |
| }, |
| { |
| session->session_id, |
| handle, |
| (uint32_t)(map_info->secure_virt_addr), |
| map_info->secure_virt_len |
| } |
| }; |
| |
| connection_write_data(dev_con, |
| &cmd_unmap_bulk_mem, |
| sizeof(cmd_unmap_bulk_mem)); |
| |
| /* Read command response */ |
| struct mc_drv_response_header_t rsp_header; |
| int len = connection_read_datablock(dev_con, |
| &rsp_header, |
| sizeof(rsp_header)); |
| if (len != sizeof(rsp_header)) { |
| MCDRV_DBG_ERROR(mc_kapi, |
| "CMD_UNMAP_BULK_BUF readRsp failed %d", |
| len); |
| mc_result = MC_DRV_ERR_DAEMON_UNREACHABLE; |
| break; |
| } |
| |
| if (rsp_header.response_id != MC_DRV_RSP_OK) { |
| MCDRV_DBG_ERROR(mc_kapi, |
| "CMD_UNMAP_BULK_BUF failed, respId=%d", |
| rsp_header.response_id); |
| |
| mc_result = MC_DRV_ERR_DAEMON_UNREACHABLE; |
| break; |
| } |
| |
| /*struct mc_drv_rsp_unmap_bulk_mem_payload_t |
| rsp_unmap_bulk_mem_payload; |
| connection_read_datablock(dev_con, |
| &rsp_unmap_bulk_mem_payload, |
| sizeof(rsp_unmap_bulk_mem_payload));*/ |
| |
| /* |
| * Unregister mapped bulk buffer from Kernel Module and |
| * remove mapped bulk buffer from session maintenance |
| */ |
| if (!session_remove_bulk_buf(session, buf)) { |
| /* Removing of bulk buffer not possible */ |
| MCDRV_DBG_ERROR(mc_kapi, |
| "Unregistering of bulk memory failed"); |
| mc_result = MC_DRV_ERR_BULK_UNMAPPING; |
| break; |
| } |
| |
| mc_result = MC_DRV_OK; |
| |
| } while (false); |
| |
| return mc_result; |
| } |
| EXPORT_SYMBOL(mc_unmap); |
| |
| enum mc_result mc_get_session_error_code(struct mc_session_handle *session, |
| int32_t *last_error) |
| { |
| enum mc_result mc_result = MC_DRV_OK; |
| |
| MCDRV_DBG_VERBOSE(mc_kapi, "===%s()===", __func__); |
| |
| do { |
| if (session == NULL || last_error == NULL) { |
| mc_result = MC_DRV_ERR_INVALID_PARAMETER; |
| break; |
| } |
| |
| /* Get device */ |
| struct mcore_device_t *device = |
| resolve_device_id(session->device_id); |
| if (device == NULL) { |
| MCDRV_DBG_ERROR(mc_kapi, "Device not found"); |
| mc_result = MC_DRV_ERR_UNKNOWN_DEVICE; |
| break; |
| } |
| |
| /* Get session */ |
| uint32_t session_id = session->session_id; |
| struct session *nqsession = |
| mcore_device_resolve_session_id(device, |
| session_id); |
| if (nqsession == NULL) { |
| MCDRV_DBG_ERROR(mc_kapi, "Session not found"); |
| mc_result = MC_DRV_ERR_UNKNOWN_SESSION; |
| break; |
| } |
| |
| *last_error = session_get_last_err(nqsession); |
| |
| } while (false); |
| |
| return mc_result; |
| } |
| EXPORT_SYMBOL(mc_get_session_error_code); |
| |
| enum mc_result mc_driver_ctrl(enum mc_driver_ctrl param, uint8_t *data, |
| uint32_t len) |
| { |
| MCDRV_DBG_WARN(mc_kapi, "not implemented"); |
| return MC_DRV_ERR_NOT_IMPLEMENTED; |
| } |
| EXPORT_SYMBOL(mc_driver_ctrl); |
| |
| enum mc_result mc_manage(uint32_t device_id, uint8_t *data, uint32_t len) |
| { |
| MCDRV_DBG_WARN(mc_kapi, "not implemented"); |
| return MC_DRV_ERR_NOT_IMPLEMENTED; |
| } |
| EXPORT_SYMBOL(mc_manage); |
| |