tbase-400: Fix built in feature and merge recent changes from the trustonic trunk base (4e016077) · Commits · e / devices / android_kernel_xiaomi_markw

drivers/gud/MobiCoreDriver/Makefile

+16 −8

Original line number	Diff line number	Diff line
		@@ -2,24 +2,32 @@
		# Makefile for the <t-base core driver
		#

		GUD_ROOT_FOLDER := drivers/gud
		GUD_ROOT_FOLDER := drivers/gud/

		# add our modules to kernel.
		obj-$(CONFIG_MOBICORE_DRIVER) += mcDrvModule.o

		mcDrvModule-y := admin.o api.o client.o clientlib.o fastcall.o logging.o \
		main.o mcp.o mmu.o nqueue.o pm.o scheduler.o session.o
		mcDrvModule-y := \
		admin.o \
		api.o \
		client.o \
		clientlib.o \
		clock.o \
		fastcall.o \
		logging.o \
		main.o \
		mcp.o \
		mmu.o \
		pm.o \
		scheduler.o \
		session.o

		# Release mode by default
		ccflags-y += -DNDEBUG
		ccflags-y += -Wno-declaration-after-statement

		ccflags-$(CONFIG_MOBICORE_DEBUG) += -DDEBUG
		ccflags-$(CONFIG_MOBICORE_VERBOSE) += -DDEBUG_VERBOSE

		# Choose one platform from the folder
		MOBICORE_PLATFORM := $(shell (ls -1 $(srctree)/$(GUD_ROOT_FOLDER)/MobiCoreDriver/platforms \| tail -1))
		# Use the available platform folder
		ccflags-y += -I$(GUD_ROOT_FOLDER)/MobiCoreDriver/platforms/$(MOBICORE_PLATFORM)
		# MobiCore Driver includes
		ccflags-y += -I$(GUD_ROOT_FOLDER)/MobiCoreDriver

drivers/gud/MobiCoreDriver/admin.c

+94 −40

Original line number	Diff line number	Diff line
		@@ -11,6 +11,7 @@
		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		* GNU General Public License for more details.
		*/

		#include <asm/atomic.h>
		#include <linux/slab.h>
		#include <linux/device.h>
		@@ -24,6 +25,7 @@
		#include <linux/vmalloc.h>
		#include <linux/module.h>
		#include <linux/random.h>
		#include <linux/delay.h>

		#include "public/mc_linux.h"
		#include "public/mc_admin.h"
		@@ -33,12 +35,13 @@
		#include "main.h"
		#include "debug.h"
		#include "mmu.h" /* For load_check and load_token */
		#include "scheduler.h" /* For mc_dev_get_version */
		#include "logging.h"
		#include "mcp.h"
		#include "client.h"
		#include "api.h"
		#include "admin.h"

		#define DRIVER_TCI_LEN PAGE_SIZE
		/* We need 2 devices for admin and user interface*/
		#define MC_DEV_MAX 2

		static struct admin_ctx {
		struct device *dev;
		@@ -47,6 +50,7 @@ static struct admin_ctx {
		struct device_driver mc_dev_name;
		dev_t mc_dev_admin;
		struct cdev mc_admin_cdev;
		int (*tee_start_cb)(void);
		} g_admin_ctx;

		static struct mc_admin_driver_request {
		@@ -146,10 +150,18 @@ static int request_send(uint32_t command, const struct mc_uuid_t *uuid,
		uint32_t is_gp, uint32_t spid)
		{
		struct device *dev = g_admin_ctx.dev;
		int counter = 10;
		int ret;

		/* Prepare request */
		mutex_lock(&g_request.states_mutex);
		/* Wait a little for daemon to connect */
		while ((g_request.server_state == NOT_CONNECTED) && counter--) {
		mutex_unlock(&g_request.states_mutex);
		ssleep(1);
		mutex_lock(&g_request.states_mutex);
		}

		BUG_ON(g_request.client_state != IDLE);
		if (g_request.server_state != READY) {
		mutex_unlock(&g_request.states_mutex);
		@@ -194,14 +206,8 @@ static int request_send(uint32_t command, const struct mc_uuid_t *uuid,
		ret = -EPIPE;
		break;
		case READY:
		/* Length was 0, expect error */
		if (!g_request.response.error_no) {
		dev_err(dev, "%s: length is 0 but no error reported\n",
		__func__);
		ret = -EPIPE;
		} else {
		/* No data to come, likely an error */
		ret = -g_request.response.error_no;
		}
		break;
		case RESPONSE_SENT:
		case DATA_SENT:
		@@ -376,7 +382,7 @@ end:
		static struct tbase_object admin_get_trustlet(const struct mc_uuid_t uuid,
		uint32_t is_gp, uint32_t *spid)
		{
		struct tbase_object *obj;
		struct tbase_object *obj = NULL;
		bool is_sp_tl;
		int ret = 0;

		@@ -409,6 +415,25 @@ end:
		return obj;
		}

		static void mc_admin_sendcrashdump(void)
		{
		int ret = 0;

		/* Lock communication channel */
		mutex_lock(&g_request.mutex);

		/* Send request and wait for header */
		ret = request_send(MC_DRV_SIGNAL_CRASH, NULL, false, 0);
		if (ret)
		goto end;

		/* Done */
		request_cancel();

		end:
		mutex_unlock(&g_request.mutex);
		}

		static int tbase_object_make(uint32_t spid, struct tbase_object *obj)
		{
		struct mc_blob_len_info l_info = (struct mc_blob_len_info )obj->data;
		@@ -550,7 +575,12 @@ static inline int load_driver(struct tbase_client *client,
		struct mc_admin_load_info *info)
		{
		struct tbase_object *obj;
		void *dci;
		struct mclf_header_v2 *thdr;
		struct mc_identity identity = {
		.login_type = TEEC_LOGIN_PUBLIC,
		};
		uintptr_t dci = 0;
		uint32_t dci_len = 0;
		uint32_t sid;
		int ret;

		@@ -558,13 +588,21 @@ static inline int load_driver(struct tbase_client *client,
		if (IS_ERR(obj))
		return PTR_ERR(obj);

		/* Create a driver */
		ret = api_malloc_cbuf(client, DRIVER_TCI_LEN, &dci, NULL);
		thdr = (struct mclf_header_v2 *)&obj->data[obj->header_length];
		if (!(thdr->flags & MC_SERVICE_HEADER_FLAGS_NO_CONTROL_INTERFACE)) {
		/*
		* The driver requires a DCI, although we won't be able to use
		* it to communicate.
		*/
		dci_len = PAGE_SIZE;
		ret = api_malloc_cbuf(client, dci_len, &dci, NULL);
		if (ret)
		goto end;
		}

		/* Open session */
		ret = client_add_session(client, obj, dci, DRIVER_TCI_LEN, &sid, false);
		ret = client_add_session(client, obj, dci, dci_len, &sid, false,
		&identity);
		if (ret)
		api_free_cbuf(client, dci);
		else
		@@ -578,6 +616,7 @@ end:
		static inline int load_token(struct mc_admin_load_info *token)
		{
		struct tbase_mmu *mmu;
		struct mcp_buffer_map map;
		int ret;

		mmu = tbase_mmu_create(current, (void *)(uintptr_t)token->address,
		@@ -585,7 +624,8 @@ static inline int load_token(struct mc_admin_load_info *token)
		if (IS_ERR(mmu))
		return PTR_ERR(mmu);

		ret = mcp_load_token(token->address, token->length, mmu);
		tbase_mmu_buffer(mmu, &map);
		ret = mcp_load_token(token->address, &map);
		tbase_mmu_delete(mmu);
		return ret;
		}
		@@ -594,6 +634,7 @@ static inline int load_check(struct mc_admin_load_info *info)
		{
		struct tbase_object *obj;
		struct tbase_mmu *mmu;
		struct mcp_buffer_map map;
		int ret;

		obj = tbase_object_read(info->spid, info->address, info->length);
		@@ -604,7 +645,8 @@ static inline int load_check(struct mc_admin_load_info *info)
		if (IS_ERR(mmu))
		return PTR_ERR(mmu);

		ret = mcp_load_check(obj, mmu);
		tbase_mmu_buffer(mmu, &map);
		ret = mcp_load_check(obj, &map);
		tbase_mmu_delete(mmu);
		return ret;
		}
		@@ -709,10 +751,8 @@ static long admin_ioctl(struct file *file, unsigned int cmd,

		MCDRV_DBG("%u from %s", _IOC_NR(cmd), current->comm);

		if (WARN(!client, "No client data available")) {
		ret = -EFAULT;
		goto out;
		}
		if (WARN(!client, "No client data available"))
		return -EFAULT;

		switch (cmd) {
		case MC_ADMIN_IO_GET_DRIVER_REQUEST: {
		@@ -747,7 +787,8 @@ static long admin_ioctl(struct file *file, unsigned int cmd,
		case MC_ADMIN_IO_GET_INFO: {
		struct mc_admin_driver_info info;

		info.drv_version = mc_dev_get_version();
		info.drv_version = MC_VERSION(MCDRVMODULEAPI_VERSION_MAJOR,
		MCDRVMODULEAPI_VERSION_MINOR);
		info.initial_cmd_id = g_request.request_id;
		ret = copy_to_user(uarg, &info, sizeof(info));
		break;
		@@ -755,19 +796,12 @@ static long admin_ioctl(struct file *file, unsigned int cmd,
		case MC_ADMIN_IO_LOAD_DRIVER: {
		struct mc_admin_load_info info;

		/* Acquire client */
		if (!mc_ref_client(client)) {
		ret = -ENODEV;
		break;
		}

		ret = copy_from_user(&info, uarg, sizeof(info));
		if (ret)
		ret = -EFAULT;
		else
		ret = load_driver(client, &info);

		mc_unref_client(client);
		break;
		}
		case MC_ADMIN_IO_LOAD_TOKEN: {
		@@ -796,8 +830,6 @@ static long admin_ioctl(struct file *file, unsigned int cmd,
		ret = -ENOIOCTLCMD;
		}

		out:
		mobicore_log_read();
		return ret;
		}

		@@ -844,6 +876,7 @@ static int admin_open(struct inode inode, struct file file)
		{
		struct device *dev = g_admin_ctx.dev;
		struct tbase_client *client;
		int err;

		/*
		* If the daemon is already set we can't allow anybody else to open
		@@ -860,11 +893,23 @@ static int admin_open(struct inode inode, struct file file)
		/* Setup the usual variables */
		MCDRV_DBG("accept %s as tbase daemon", current->comm);

		/*
		* daemon is connected so now we can safely suppose
		* the secure world is loaded too
		*/
		if (!IS_ERR_OR_NULL(g_admin_ctx.tee_start_cb))
		g_admin_ctx.tee_start_cb = ERR_PTR(g_admin_ctx.tee_start_cb());
		if (IS_ERR(g_admin_ctx.tee_start_cb)) {
		MCDRV_ERROR("Failed initializing the SW");
		err = PTR_ERR(g_admin_ctx.tee_start_cb);
		goto fail_connection;
		}

		/* Create client */
		client = api_open_device(true);
		if (!client) {
		atomic_set(&g_admin_ctx.daemon_counter, 0);
		return -ENOMEM;
		err = -ENOMEM;
		goto fail_connection;
		}

		/* Store client in user file */
		@@ -875,6 +920,10 @@ static int admin_open(struct inode inode, struct file file)
		dev_info(dev, "%s: daemon connected\n", __func__);

		return 0;

		fail_connection:
		atomic_set(&g_admin_ctx.daemon_counter, 0);
		return err;
		}

		/* function table structure of this device driver. */
		@@ -889,7 +938,8 @@ static const struct file_operations mc_admin_fops = {
		.write = admin_write,
		};

		int admin_dev_init(struct class mc_device_class, dev_t out_dev)
		int mc_admin_init(struct class mc_device_class, dev_t out_dev,
		int (*tee_start_cb)(void))
		{
		int err = 0;

		@@ -903,11 +953,12 @@ int admin_dev_init(struct class mc_device_class, dev_t out_dev)
		mutex_init(&g_request.states_mutex);
		init_completion(&g_request.client_complete);
		init_completion(&g_request.server_complete);
		mcp_register_crashhandler(mc_admin_sendcrashdump);

		/* Create char device */
		cdev_init(&g_admin_ctx.mc_admin_cdev, &mc_admin_fops);

		err = alloc_chrdev_region(&g_admin_ctx.mc_dev_admin, 0, MC_DEV_MAX,
		"mobicore");
		"trustonic_tee");
		if (err < 0) {
		MCDRV_ERROR("failed to allocate char dev region");
		goto fail_alloc_chrdev_region;
		@@ -932,6 +983,9 @@ int admin_dev_init(struct class mc_device_class, dev_t out_dev)
		g_admin_ctx.dev->driver = &g_admin_ctx.mc_dev_name;
		*out_dev = g_admin_ctx.mc_dev_admin;

		/* Register the call back for starting the secure world */
		g_admin_ctx.tee_start_cb = tee_start_cb;

		MCDRV_DBG("done");
		return 0;

		@@ -946,7 +1000,7 @@ fail_alloc_chrdev_region:
		return err;
		}

		void admin_dev_cleanup(struct class *mc_device_class)
		void mc_admin_exit(struct class *mc_device_class)
		{
		device_destroy(mc_device_class, g_admin_ctx.mc_dev_admin);
		cdev_del(&g_admin_ctx.mc_admin_cdev);

drivers/gud/MobiCoreDriver/admin.h

+6 −10

Original line number	Diff line number	Diff line
		/*
		* Copyright (c) 2013-2014 TRUSTONIC LIMITED
		* Copyright (c) 2013-2015 TRUSTONIC LIMITED
		* All Rights Reserved.
		*
		* This program is free software; you can redistribute it and/or
		@@ -15,16 +15,12 @@
		#ifndef ADMIN_FD_H_
		#define ADMIN_FD_H_

		#include <public/mc_linux.h>
		struct mc_uuid_t;
		struct tbase_object;

		struct tbase_object {
		uint32_t length; /* Total length */
		uint32_t header_length; /* Length of header before payload */
		uint8_t data[]; /* Header followed by payload */
		};

		int admin_dev_init(struct class mc_device_class, dev_t out_dev);
		void admin_dev_cleanup(struct class *mc_device_class);
		int mc_admin_init(struct class mc_device_class, dev_t out_dev,
		int (*tee_start_cb)(void));
		void mc_admin_exit(struct class *mc_device_class);

		struct tbase_object tbase_object_select(const struct mc_uuid_t uuid);
		struct tbase_object tbase_object_get(const struct mc_uuid_t uuid,

drivers/gud/MobiCoreDriver/api.c

+110 −156

Original line number	Diff line number	Diff line
		@@ -15,12 +15,23 @@
		#include <linux/device.h>
		#include <linux/slab.h>
		#include <linux/err.h>
		#include <linux/cred.h>
		#include <linux/sched.h>

		#include <public/mc_linux.h> /* MC_MAP_MAX */
		#include "main.h"
		#include "debug.h"
		#include "mcp.h"
		#include "admin.h"
		#include "session.h"
		#include "client.h"
		#include "api.h"

		static struct api_ctx {
		struct mutex clients_lock; /* Clients list + temp notifs */
		struct list_head clients; /* List of user-space clients */
		} api_ctx;

		/*
		* Initialize a new tbase client object
		* @return client pointer or NULL if no allocation was possible.
		@@ -37,9 +48,11 @@ struct tbase_client *api_open_device(bool is_from_kernel)
		}

		/* Add client to list of clients */
		mc_add_client(client);
		mutex_lock(&api_ctx.clients_lock);
		list_add_tail(&client->list, &api_ctx.clients);
		mutex_unlock(&api_ctx.clients_lock);

		MCDRV_DBG("Created client 0x%p", client);
		MCDRV_DBG("created client %p", client);
		return client;
		}

		@@ -51,17 +64,10 @@ int api_freeze_device(struct tbase_client *client)
		{
		int err = 0;

		if (!mc_ref_client(client)) {
		err = -ENODEV;
		goto end;
		}

		if (!client_set_closing(client))
		err = -ENOTEMPTY;

		mc_unref_client(client);
		end:
		MCDRV_DBG("client 0x%p, exit with %d\n", client, err);
		MCDRV_DBG("client %p, exit with %d\n", client, err);
		return err;
		}

		@@ -70,18 +76,16 @@ end:
		* @param client_t client
		* @return tbase driver error code
		*/
		int api_close_device(struct tbase_client *client)
		void api_close_device(struct tbase_client *client)
		{
		/* Remove client from list of active clients */
		int err = mc_remove_client(client);

		if (!err) {
		mutex_lock(&api_ctx.clients_lock);
		list_del(&client->list);
		mutex_unlock(&api_ctx.clients_lock);
		/* Close all remaining sessions */
		client_close_sessions(client);
		mc_unref_client(client);
		}

		MCDRV_DBG("client 0x%p, exit with %d\n\n", client, err);
		return err;
		client_put(client);
		MCDRV_DBG("client %p closed\n", client);
		}

		/*
		@@ -94,7 +98,8 @@ int api_open_session(struct tbase_client *client,
		const struct mc_uuid_t *uuid,
		uintptr_t tci,
		size_t tci_len,
		bool is_gp_uuid)
		bool is_gp_uuid,
		struct mc_identity *identity)
		{
		int err = 0;
		uint32_t sid = 0;
		@@ -107,10 +112,6 @@ int api_open_session(struct tbase_client *client,
		if (!uuid)
		return -EINVAL;

		/* Acquire client */
		if (!mc_ref_client(client))
		return -ENODEV;

		/* Get secure object */
		obj = tbase_object_get(uuid, is_gp_uuid);
		if (IS_ERR(obj)) {
		@@ -125,8 +126,8 @@ int api_open_session(struct tbase_client *client,
		}

		/* Open session */
		err = client_add_session(client, obj, (void *)tci, tci_len, &sid,
		is_gp_uuid);
		err = client_add_session(client, obj, tci, tci_len, &sid, is_gp_uuid,
		identity);
		/* Fill in return parameter */
		if (!err)
		*p_session_id = sid;
		@@ -135,8 +136,6 @@ int api_open_session(struct tbase_client *client,
		tbase_object_free(obj);

		end:
		/* Release client */
		mc_unref_client(client);

		MCDRV_DBG("session %x, exit with %d\n", sid, err);
		return err;
		@@ -155,18 +154,17 @@ int api_open_trustlet(struct tbase_client *client,
		uintptr_t tci,
		size_t tci_len)
		{
		int err = 0;
		uint32_t sid = 0;
		struct tbase_object *obj;
		struct mc_identity identity = {
		.login_type = TEEC_LOGIN_PUBLIC,
		};
		uint32_t sid = 0;
		int err = 0;

		/* Check parameters */
		if (!p_session_id)
		return -EINVAL;

		/* Acquire client */
		if (!mc_ref_client(client))
		return -ENODEV;

		/* Create secure object from user-space trustlet binary */
		obj = tbase_object_read(spid, trustlet, trustlet_len);
		if (IS_ERR(obj)) {
		@@ -175,8 +173,8 @@ int api_open_trustlet(struct tbase_client *client,
		}

		/* Open session */
		err = client_add_session(client, obj, (void *)tci, tci_len, &sid,
		false);
		err = client_add_session(client, obj, tci, tci_len, &sid, false,
		&identity);
		/* Fill in return parameter */
		if (!err)
		*p_session_id = sid;
		@@ -185,9 +183,6 @@ int api_open_trustlet(struct tbase_client *client,
		tbase_object_free(obj);

		end:
		/* Release client */
		mc_unref_client(client);

		MCDRV_DBG("session %x, exit with %d\n", sid, err);
		return err;
		}
		@@ -199,23 +194,10 @@ end:
		*/
		int api_close_session(struct tbase_client *client, uint32_t session_id)
		{
		int err = 0;

		/* Acquire client */
		if (!mc_ref_client(client)) {
		err = -ENODEV;
		goto end;
		}

		/* Close session */
		err = client_remove_session(client, session_id);
		int ret = client_remove_session(client, session_id);

		/* Release client */
		mc_unref_client(client);

		end:
		MCDRV_DBG("session %x, exit with %d\n", session_id, err);
		return err;
		MCDRV_DBG("session %x, exit with %d\n", session_id, ret);
		return ret;
		}

		/*
		@@ -227,10 +209,6 @@ int api_notify(struct tbase_client *client, uint32_t session_id)
		int err = 0;
		struct tbase_session *session = NULL;

		/* Acquire client */
		if (!mc_ref_client(client))
		return -ENODEV;

		/* Acquire session */
		session = client_ref_session(client, session_id);

		@@ -244,9 +222,6 @@ int api_notify(struct tbase_client *client, uint32_t session_id)
		client_unref_session(session);
		}

		/* Release client */
		mc_unref_client(client);

		MCDRV_DBG("session %x, exit with %d\n", session_id, err);
		return err;
		}
		@@ -262,10 +237,6 @@ int api_wait_notification(struct tbase_client *client,
		int err = 0;
		struct tbase_session *session = NULL;

		/* Acquire client */
		if (!mc_ref_client(client))
		return -ENODEV;

		/* Acquire session */
		session = client_ref_session(client, session_id);

		@@ -273,15 +244,12 @@ int api_wait_notification(struct tbase_client *client,
		if (!session) {
		err = -ENXIO;
		} else {
		err = session_wait(session, timeout);
		err = session_waitnotif(session, timeout);

		/* Release session */
		client_unref_session(session);
		}

		/* Release client */
		mc_unref_client(client);

		MCDRV_DBG("session %x, exit with %d\n", session_id, err);
		return err;
		}
		@@ -295,19 +263,9 @@ int api_wait_notification(struct tbase_client *client,
		* @return tbase driver error code
		*/
		int api_malloc_cbuf(struct tbase_client *client, uint32_t len,
		void *p_addr, struct vm_area_struct vmarea)
		uintptr_t addr, struct vm_area_struct vmarea)
		{
		int err = 0;

		/* Acquire client */
		if (!mc_ref_client(client))
		return -ENODEV;

		/* Allocate buffer */
		err = tbase_cbuf_alloc(client, len, p_addr, vmarea);

		/* Release client */
		mc_unref_client(client);
		int err = tbase_cbuf_alloc(client, len, addr, vmarea);

		MCDRV_DBG("exit with %d\n", err);
		return err;
		@@ -320,49 +278,33 @@ int api_malloc_cbuf(struct tbase_client *client, uint32_t len,
		*
		* @return tbase driver error code
		*/
		int api_free_cbuf(struct tbase_client client, void addr)
		int api_free_cbuf(struct tbase_client *client, uintptr_t addr)
		{
		int err = 0;

		/* Acquire client */
		if (!mc_ref_client(client))
		return -ENODEV;

		/* Free buffer */
		err = tbase_cbuf_free(client, addr);

		/* Release client */
		mc_unref_client(client);
		int err = tbase_cbuf_free(client, addr);

		MCDRV_DBG("@ 0x%p, exit with %d\n", addr, err);
		MCDRV_DBG("@ 0x%lx, exit with %d\n", addr, err);
		return err;
		}

		/*
		* Share a buffer with given TA in SWd
		* @return tbase driver error code
		*/
		int api_map_wsm(struct tbase_client client, uint32_t session_id, void buf,
		uint32_t len, uint32_t p_sva, uint32_t p_slen)
		/* Share a buffer with given TA in SWd */
		int api_map_wsms(struct tbase_client *client, uint32_t session_id,
		struct mc_ioctl_buffer *bufs)
		{
		int err = 0;
		struct tbase_session *session = NULL;
		uint32_t sva;
		int err = 0;

		/* Check parameters */
		if (!buf \|\| !len \|\| !p_sva \|\| !p_slen)
		if (!client)
		return -EINVAL;

		/* Acquire client */
		if (!mc_ref_client(client))
		return -ENODEV;
		if (!bufs)
		return -EINVAL;

		/* Acquire session */
		session = client_ref_session(client, session_id);

		if (session) {
		/* Add buffer to the session */
		err = session_add_wsm(session, buf, len, &sva);
		err = session_wsms_add(session, bufs);

		/* Release session */
		client_unref_session(session);
		@@ -370,43 +312,22 @@ int api_map_wsm(struct tbase_client client, uint32_t session_id, void buf,
		err = -ENXIO;
		}

		if (err) {
		*p_sva = 0;
		*p_slen = 0;
		MCDRV_ERROR("code %d", err);
		} else {
		*p_sva = sva;
		*p_slen = len;
		}

		/* Release client */
		mc_unref_client(client);

		MCDRV_DBG("0x%p, exit with %d\n", buf, err);
		MCDRV_DBG("exit with %d\n", err);
		return err;
		}

		/*
		* Stop sharing a buffer with SWd
		* @param client
		* @param session_id
		* @param buf
		* @param map_info
		* @return tbase driver error code
		*/
		int api_unmap_wsm(struct tbase_client *client, uint32_t session_id,
		void *buf, uint32_t sva, uint32_t slen)
		/* Stop sharing a buffer with SWd */
		int api_unmap_wsms(struct tbase_client *client, uint32_t session_id,
		const struct mc_ioctl_buffer *bufs)
		{
		int err = 0;
		struct tbase_session *session = NULL;
		int err = 0;

		/* Check parameters */
		if (!client)
		return -EINVAL;

		/* Acquire client */
		if (!mc_ref_client(client))
		return -ENODEV;
		if (!bufs)
		return -EINVAL;

		/* Acquire session */
		session = client_ref_session(client, session_id);
		@@ -415,33 +336,24 @@ int api_unmap_wsm(struct tbase_client *client, uint32_t session_id,
		err = -ENXIO;
		} else {
		/* Remove buffer from session */
		err = session_remove_wsm(session, buf, sva, slen);

		err = session_wsms_remove(session, bufs);
		/* Release session */
		client_unref_session(session);
		}

		/* Release client */
		mc_unref_client(client);

		MCDRV_DBG("0x%p, exit with %d\n", buf, err);
		MCDRV_DBG("exit with %d\n", err);
		return err;
		}

		/*
		* Read last error from received notifications
		* @return tbase driver error code
		* Read session exit/termination code
		*/
		int api_get_session_error(struct tbase_client *client, uint32_t session_id,
		int32_t *last_error)
		int api_get_session_exitcode(struct tbase_client *client, uint32_t session_id,
		int32_t *exit_code)
		{
		int err = 0;
		struct tbase_session *session;

		/* Acquire client */
		if (!mc_ref_client(client))
		return -ENODEV;

		/* Acquire session */
		session = client_ref_session(client, session_id);

		@@ -449,7 +361,7 @@ int api_get_session_error(struct tbase_client *client, uint32_t session_id,
		err = -ENXIO;
		} else {
		/* Retrieve error */
		*last_error = session_get_err(session);
		*exit_code = session_exitcode(session);

		/* Release session */
		client_unref_session(session);
		@@ -457,9 +369,51 @@ int api_get_session_error(struct tbase_client *client, uint32_t session_id,
		err = 0;
		}

		/* Release client */
		mc_unref_client(client);

		MCDRV_DBG("session %x, exit with %d\n", session_id, err);
		return err;
		}

		void api_init(void)
		{
		INIT_LIST_HEAD(&api_ctx.clients);
		mutex_init(&api_ctx.clients_lock);

		INIT_LIST_HEAD(&g_ctx.closing_sess);
		mutex_init(&g_ctx.closing_lock);
		}

		int api_info(struct kasnprintf_buf *buf)
		{
		struct tbase_client *client;
		struct tbase_session *session;
		ssize_t ret = 0;

		mutex_lock(&api_ctx.clients_lock);
		if (list_empty(&api_ctx.clients))
		goto done;

		list_for_each_entry(client, &api_ctx.clients, list) {
		ret = client_info(client, buf);
		if (ret < 0)
		break;
		}

		done:
		mutex_unlock(&api_ctx.clients_lock);

		if (ret >= 0) {
		mutex_lock(&g_ctx.closing_lock);
		if (!list_empty(&g_ctx.closing_sess))
		ret = kasnprintf(buf, "closing sessions:\n");

		list_for_each_entry(session, &g_ctx.closing_sess, list) {
		ret = session_info(session, buf);
		if (ret < 0)
		break;
		}

		mutex_unlock(&g_ctx.closing_lock);
		}

		return ret;
		}

drivers/gud/MobiCoreDriver/api.h

+19 −38

Original line number	Diff line number	Diff line
		@@ -15,51 +15,32 @@
		#ifndef _API_H_
		#define _API_H_

		#include "public/mc_linux.h"

		#include "client.h"
		#include "session.h"
		struct tbase_client;

		struct tbase_client *api_open_device(bool is_from_kernel);

		int api_freeze_device(struct tbase_client *client);

		int api_close_device(struct tbase_client *client);

		int api_open_session(struct tbase_client *client,
		uint32_t *session_id,
		void api_close_device(struct tbase_client *client);
		int api_open_session(struct tbase_client client, uint32_t session_id,
		const struct mc_uuid_t *uuid,
		uintptr_t tci,
		size_t tci_len,
		bool is_gp_uuid);

		int api_open_trustlet(struct tbase_client *client,
		uint32_t *p_sid,
		uint32_t spid,
		uintptr_t trustlet,
		size_t trustlet_len,
		uintptr_t tci,
		size_t tci_len);

		uintptr_t tci, size_t tci_len, bool is_gp_uuid,
		struct mc_identity *identity);
		int api_open_trustlet(struct tbase_client client, uint32_t session_id,
		uint32_t spid, uintptr_t trustlet, size_t trustlet_len,
		uintptr_t tci, size_t tci_len);
		int api_close_session(struct tbase_client *client, uint32_t session_id);

		int api_notify(struct tbase_client *client, uint32_t session_id);

		int api_wait_notification(struct tbase_client *client, uint32_t session_id,
		int32_t timeout);

		int api_malloc_cbuf(struct tbase_client client, uint32_t len, void *p_addr,
		int api_malloc_cbuf(struct tbase_client client, uint32_t len, uintptr_t addr,
		struct vm_area_struct *vmarea);

		int api_free_cbuf(struct tbase_client client, void addr);

		int api_map_wsm(struct tbase_client client, uint32_t session_id, void buf,
		uint32_t len, uint32_t p_sva, uint32_t p_slen);

		int api_unmap_wsm(struct tbase_client client, uint32_t session_id, void buf,
		uint32_t sva, uint32_t slen);

		int api_get_session_error(struct tbase_client *client, uint32_t session_id,
		int32_t *last_error);
		int api_free_cbuf(struct tbase_client *client, uintptr_t addr);
		int api_map_wsms(struct tbase_client *client, uint32_t session_id,
		struct mc_ioctl_buffer *bufs);
		int api_unmap_wsms(struct tbase_client *client, uint32_t session_id,
		const struct mc_ioctl_buffer *bufs);
		int api_get_session_exitcode(struct tbase_client *client, uint32_t session_id,
		int32_t *exit_code);
		void api_init(void);
		int api_info(struct kasnprintf_buf *buf);

		#endif /* _API_H_ */