Gitiles
Code Review Sign In
gerrit-public.fairphone.software / fp2-dev / kernel / msm / 371b4626a059771529fc6a2983bf3012f95b19b6 / . / drivers / misc / qseecom.c
blob: 9bc77be363ffbb72128e21e147dad3bd9f33b319 [file] [log] [blame]
/*Qualcomm Secure Execution Environment Communicator (QSEECOM) driver
*
* Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#define pr_fmt(fmt) "QSEECOM: %s: " fmt, __func__
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/fs.h>
#include <linux/platform_device.h>
#include <linux/debugfs.h>
#include <linux/cdev.h>
#include <linux/uaccess.h>
#include <linux/sched.h>
#include <linux/list.h>
#include <linux/mutex.h>
#include <linux/io.h>
#include <linux/msm_ion.h>
#include <linux/types.h>
#include <linux/clk.h>
#include <linux/qseecom.h>
#include <linux/elf.h>
#include <linux/firmware.h>
#include <linux/freezer.h>
#include <linux/scatterlist.h>
#include <mach/board.h>
#include <mach/msm_bus.h>
#include <mach/msm_bus_board.h>
#include <mach/scm.h>
#include <mach/subsystem_restart.h>
#include <mach/socinfo.h>
#include <mach/qseecomi.h>
#include "qseecom_legacy.h"
#include "qseecom_kernel.h"
#define QSEECOM_DEV "qseecom"
#define QSEOS_VERSION_13 0x13
#define QSEOS_VERSION_14 0x14
#define QSEEE_VERSION_00 0x400000
#define QSEE_VERSION_01 0x401000
#define QSEE_VERSION_02 0x402000
#define QSEE_VERSION_03 0x403000
#define QSEE_VERSION_04 0x404000
#define QSEE_VERSION_05 0x405000
#define QSEOS_CHECK_VERSION_CMD 0x00001803
#define QSEE_CE_CLK_100MHZ 100000000
#define QSEECOM_MAX_SG_ENTRY 512
#define QSEECOM_DISK_ENCRYTPION_KEY_ID 0
/* Save partition image hash for authentication check */
#define SCM_SAVE_PARTITION_HASH_ID 0x01
/* Check if enterprise security is activate */
#define SCM_IS_ACTIVATED_ID 0x02
enum qseecom_clk_definitions {
CLK_DFAB = 0,
CLK_SFPB,
};
enum qseecom_client_handle_type {
QSEECOM_CLIENT_APP = 0,
QSEECOM_LISTENER_SERVICE,
QSEECOM_SECURE_SERVICE,
QSEECOM_GENERIC,
};
enum qseecom_ce_hw_instance {
CLK_QSEE = 0,
CLK_CE_DRV,
};
static struct class *driver_class;
static dev_t qseecom_device_no;
static struct cdev qseecom_cdev;
/* Data structures used in legacy support */
static void *pil;
static uint32_t pil_ref_cnt;
static DEFINE_MUTEX(pil_access_lock);
static DEFINE_MUTEX(qsee_bw_mutex);
static DEFINE_MUTEX(app_access_lock);
static DEFINE_MUTEX(clk_access_lock);
struct qseecom_registered_listener_list {
struct list_head list;
struct qseecom_register_listener_req svc;
u8 *sb_reg_req;
u8 *sb_virt;
s32 sb_phys;
size_t sb_length;
struct ion_handle *ihandle; /* Retrieve phy addr */
wait_queue_head_t rcv_req_wq;
int rcv_req_flag;
};
struct qseecom_registered_app_list {
struct list_head list;
u32 app_id;
u32 ref_cnt;
};
struct qseecom_registered_kclient_list {
struct list_head list;
struct qseecom_handle *handle;
};
struct ce_hw_usage_info {
uint32_t qsee_ce_hw_instance;
uint32_t hlos_ce_hw_instance;
uint32_t disk_encrypt_pipe;
};
struct qseecom_clk {
enum qseecom_ce_hw_instance instance;
struct clk *ce_core_clk;
struct clk *ce_clk;
struct clk *ce_core_src_clk;
struct clk *ce_bus_clk;
uint32_t clk_access_cnt;
};
struct qseecom_control {
struct ion_client *ion_clnt; /* Ion client */
struct list_head registered_listener_list_head;
spinlock_t registered_listener_list_lock;
struct list_head registered_app_list_head;
spinlock_t registered_app_list_lock;
struct list_head registered_kclient_list_head;
spinlock_t registered_kclient_list_lock;
wait_queue_head_t send_resp_wq;
int send_resp_flag;
uint32_t qseos_version;
uint32_t qsee_version;
struct device *pdev;
bool commonlib_loaded;
struct ce_hw_usage_info ce_info;
int qsee_bw_count;
int qsee_sfpb_bw_count;
uint32_t qsee_perf_client;
struct qseecom_clk qsee;
struct qseecom_clk ce_drv;
};
struct qseecom_client_handle {
u32 app_id;
u8 *sb_virt;
s32 sb_phys;
uint32_t user_virt_sb_base;
size_t sb_length;
struct ion_handle *ihandle; /* Retrieve phy addr */
};
struct qseecom_listener_handle {
u32 id;
};
static struct qseecom_control qseecom;
struct qseecom_dev_handle {
enum qseecom_client_handle_type type;
union {
struct qseecom_client_handle client;
struct qseecom_listener_handle listener;
};
bool released;
int abort;
wait_queue_head_t abort_wq;
atomic_t ioctl_count;
bool perf_enabled;
bool fast_load_enabled;
};
enum qseecom_set_clear_key_flag {
QSEECOM_CLEAR_CE_KEY_CMD = 0,
QSEECOM_SET_CE_KEY_CMD,
};
struct qseecom_set_key_parameter {
uint32_t ce_hw;
uint32_t pipe;
uint32_t flags;
uint8_t key_id[QSEECOM_KEY_ID_SIZE];
unsigned char hash32[QSEECOM_HASH_SIZE];
enum qseecom_set_clear_key_flag set_clear_key_flag;
};
struct qseecom_sg_entry {
uint32_t phys_addr;
uint32_t len;
};
/* Function proto types */
static int qsee_vote_for_clock(struct qseecom_dev_handle *, int32_t);
static void qsee_disable_clock_vote(struct qseecom_dev_handle *, int32_t);
static int __qseecom_is_svc_unique(struct qseecom_dev_handle *data,
struct qseecom_register_listener_req *svc)
{
struct qseecom_registered_listener_list *ptr;
int unique = 1;
unsigned long flags;
spin_lock_irqsave(&qseecom.registered_listener_list_lock, flags);
list_for_each_entry(ptr, &qseecom.registered_listener_list_head, list) {
if (ptr->svc.listener_id == svc->listener_id) {
pr_err("Service id: %u is already registered\n",
ptr->svc.listener_id);
unique = 0;
break;
}
}
spin_unlock_irqrestore(&qseecom.registered_listener_list_lock, flags);
return unique;
}
static struct qseecom_registered_listener_list *__qseecom_find_svc(
int32_t listener_id)
{
struct qseecom_registered_listener_list *entry = NULL;
unsigned long flags;
spin_lock_irqsave(&qseecom.registered_listener_list_lock, flags);
list_for_each_entry(entry, &qseecom.registered_listener_list_head, list)
{
if (entry->svc.listener_id == listener_id)
break;
}
spin_unlock_irqrestore(&qseecom.registered_listener_list_lock, flags);
return entry;
}
static int __qseecom_set_sb_memory(struct qseecom_registered_listener_list *svc,
struct qseecom_dev_handle *handle,
struct qseecom_register_listener_req *listener)
{
int ret = 0;
struct qseecom_register_listener_ireq req;
struct qseecom_command_scm_resp resp;
ion_phys_addr_t pa;
/* Get the handle of the shared fd */
svc->ihandle = ion_import_dma_buf(qseecom.ion_clnt,
listener->ifd_data_fd);
if (svc->ihandle == NULL) {
pr_err("Ion client could not retrieve the handle\n");
return -ENOMEM;
}
/* Get the physical address of the ION BUF */
ret = ion_phys(qseecom.ion_clnt, svc->ihandle, &pa, &svc->sb_length);
/* Populate the structure for sending scm call to load image */
svc->sb_virt = (char *) ion_map_kernel(qseecom.ion_clnt, svc->ihandle);
svc->sb_phys = pa;
req.qsee_cmd_id = QSEOS_REGISTER_LISTENER;
req.listener_id = svc->svc.listener_id;
req.sb_len = svc->sb_length;
req.sb_ptr = (void *)svc->sb_phys;
resp.result = QSEOS_RESULT_INCOMPLETE;
ret = scm_call(SCM_SVC_TZSCHEDULER, 1, &req,
sizeof(req), &resp, sizeof(resp));
if (ret) {
pr_err("qseecom_scm_call failed with err: %d\n", ret);
return -EINVAL;
}
if (resp.result != QSEOS_RESULT_SUCCESS) {
pr_err("Error SB registration req: resp.result = %d\n",
resp.result);
return -EPERM;
}
return 0;
}
static int qseecom_register_listener(struct qseecom_dev_handle *data,
void __user *argp)
{
int ret = 0;
unsigned long flags;
struct qseecom_register_listener_req rcvd_lstnr;
struct qseecom_registered_listener_list *new_entry;
ret = copy_from_user(&rcvd_lstnr, argp, sizeof(rcvd_lstnr));
if (ret) {
pr_err("copy_from_user failed\n");
return ret;
}
data->listener.id = 0;
data->type = QSEECOM_LISTENER_SERVICE;
if (!__qseecom_is_svc_unique(data, &rcvd_lstnr)) {
pr_err("Service is not unique and is already registered\n");
data->released = true;
return -EBUSY;
}
new_entry = kmalloc(sizeof(*new_entry), GFP_KERNEL);
if (!new_entry) {
pr_err("kmalloc failed\n");
return -ENOMEM;
}
memcpy(&new_entry->svc, &rcvd_lstnr, sizeof(rcvd_lstnr));
new_entry->rcv_req_flag = 0;
new_entry->svc.listener_id = rcvd_lstnr.listener_id;
new_entry->sb_length = rcvd_lstnr.sb_size;
if (__qseecom_set_sb_memory(new_entry, data, &rcvd_lstnr)) {
pr_err("qseecom_set_sb_memoryfailed\n");
kzfree(new_entry);
return -ENOMEM;
}
data->listener.id = rcvd_lstnr.listener_id;
init_waitqueue_head(&new_entry->rcv_req_wq);
spin_lock_irqsave(&qseecom.registered_listener_list_lock, flags);
list_add_tail(&new_entry->list, &qseecom.registered_listener_list_head);
spin_unlock_irqrestore(&qseecom.registered_listener_list_lock, flags);
return ret;
}
static int qseecom_unregister_listener(struct qseecom_dev_handle *data)
{
int ret = 0;
unsigned long flags;
uint32_t unmap_mem = 0;
struct qseecom_register_listener_ireq req;
struct qseecom_registered_listener_list *ptr_svc = NULL;
struct qseecom_command_scm_resp resp;
struct ion_handle *ihandle = NULL; /* Retrieve phy addr */
req.qsee_cmd_id = QSEOS_DEREGISTER_LISTENER;
req.listener_id = data->listener.id;
resp.result = QSEOS_RESULT_INCOMPLETE;
ret = scm_call(SCM_SVC_TZSCHEDULER, 1, &req,
sizeof(req), &resp, sizeof(resp));
if (ret) {
pr_err("scm_call() failed with err: %d (lstnr id=%d)\n",
ret, data->listener.id);
return ret;
}
if (resp.result != QSEOS_RESULT_SUCCESS) {
pr_err("Failed resp.result=%d,(lstnr id=%d)\n",
resp.result, data->listener.id);
return -EPERM;
}
data->abort = 1;
spin_lock_irqsave(&qseecom.registered_listener_list_lock, flags);
list_for_each_entry(ptr_svc, &qseecom.registered_listener_list_head,
list) {
if (ptr_svc->svc.listener_id == data->listener.id) {
wake_up_all(&ptr_svc->rcv_req_wq);
break;
}
}
spin_unlock_irqrestore(&qseecom.registered_listener_list_lock, flags);
while (atomic_read(&data->ioctl_count) > 1) {
if (wait_event_freezable(data->abort_wq,
atomic_read(&data->ioctl_count) <= 1)) {
pr_err("Interrupted from abort\n");
ret = -ERESTARTSYS;
break;
}
}
spin_lock_irqsave(&qseecom.registered_listener_list_lock, flags);
list_for_each_entry(ptr_svc,
&qseecom.registered_listener_list_head,
list)
{
if (ptr_svc->svc.listener_id == data->listener.id) {
if (ptr_svc->sb_virt) {
unmap_mem = 1;
ihandle = ptr_svc->ihandle;
}
list_del(&ptr_svc->list);
kzfree(ptr_svc);
break;
}
}
spin_unlock_irqrestore(&qseecom.registered_listener_list_lock, flags);
/* Unmap the memory */
if (unmap_mem) {
if (!IS_ERR_OR_NULL(ihandle)) {
ion_unmap_kernel(qseecom.ion_clnt, ihandle);
ion_free(qseecom.ion_clnt, ihandle);
}
}
data->released = true;
return ret;
}
static int qseecom_set_client_mem_param(struct qseecom_dev_handle *data,
void __user *argp)
{
ion_phys_addr_t pa;
int32_t ret;
struct qseecom_set_sb_mem_param_req req;
uint32_t len;
/* Copy the relevant information needed for loading the image */
if (__copy_from_user(&req, (void __user *)argp, sizeof(req)))
return -EFAULT;
/* Get the handle of the shared fd */
data->client.ihandle = ion_import_dma_buf(qseecom.ion_clnt,
req.ifd_data_fd);
if (IS_ERR_OR_NULL(data->client.ihandle)) {
pr_err("Ion client could not retrieve the handle\n");
return -ENOMEM;
}
/* Get the physical address of the ION BUF */
ret = ion_phys(qseecom.ion_clnt, data->client.ihandle, &pa, &len);
/* Populate the structure for sending scm call to load image */
data->client.sb_virt = (char *) ion_map_kernel(qseecom.ion_clnt,
data->client.ihandle);
data->client.sb_phys = pa;
data->client.sb_length = req.sb_len;
data->client.user_virt_sb_base = req.virt_sb_base;
return 0;
}
static int __qseecom_listener_has_sent_rsp(struct qseecom_dev_handle *data)
{
int ret;
ret = (qseecom.send_resp_flag != 0);
return ret || data->abort;
}
static int __qseecom_process_incomplete_cmd(struct qseecom_dev_handle *data,
struct qseecom_command_scm_resp *resp)
{
int ret = 0;
int rc = 0;
uint32_t lstnr;
unsigned long flags;
struct qseecom_client_listener_data_irsp send_data_rsp;
struct qseecom_registered_listener_list *ptr_svc = NULL;
sigset_t new_sigset;
sigset_t old_sigset;
while (resp->result == QSEOS_RESULT_INCOMPLETE) {
lstnr = resp->data;
/*
* Wake up blocking lsitener service with the lstnr id
*/
spin_lock_irqsave(&qseecom.registered_listener_list_lock,
flags);
list_for_each_entry(ptr_svc,
&qseecom.registered_listener_list_head, list) {
if (ptr_svc->svc.listener_id == lstnr) {
ptr_svc->rcv_req_flag = 1;
wake_up_interruptible(&ptr_svc->rcv_req_wq);
break;
}
}
spin_unlock_irqrestore(&qseecom.registered_listener_list_lock,
flags);
if (ptr_svc->svc.listener_id != lstnr) {
pr_warning("Service requested for does on exist\n");
return -ERESTARTSYS;
}
pr_debug("waking up rcv_req_wq and "
"waiting for send_resp_wq\n");
/* initialize the new signal mask with all signals*/
sigfillset(&new_sigset);
/* block all signals */
sigprocmask(SIG_SETMASK, &new_sigset, &old_sigset);
do {
if (!wait_event_freezable(qseecom.send_resp_wq,
__qseecom_listener_has_sent_rsp(data)))
break;
} while (1);
/* restore signal mask */
sigprocmask(SIG_SETMASK, &old_sigset, NULL);
if (data->abort) {
pr_err("Abort clnt %d waiting on lstnr svc %d, ret %d",
data->client.app_id, lstnr, ret);
rc = -ENODEV;
send_data_rsp.status = QSEOS_RESULT_FAILURE;
} else {
send_data_rsp.status = QSEOS_RESULT_SUCCESS;
}
qseecom.send_resp_flag = 0;
send_data_rsp.qsee_cmd_id = QSEOS_LISTENER_DATA_RSP_COMMAND;
send_data_rsp.listener_id = lstnr ;
ret = scm_call(SCM_SVC_TZSCHEDULER, 1,
(const void *)&send_data_rsp,
sizeof(send_data_rsp), resp,
sizeof(*resp));
if (ret) {
pr_err("scm_call() failed with err: %d (app_id = %d)\n",
ret, data->client.app_id);
return ret;
}
if ((resp->result != QSEOS_RESULT_SUCCESS) &&
(resp->result != QSEOS_RESULT_INCOMPLETE)) {
pr_err("fail:resp res= %d,app_id = %d,lstr = %d\n",
resp->result, data->client.app_id, lstnr);
ret = -EINVAL;
}
}
if (rc)
return rc;
return ret;
}
static int __qseecom_check_app_exists(struct qseecom_check_app_ireq req)
{
int32_t ret;
struct qseecom_command_scm_resp resp;
/* SCM_CALL to check if app_id for the mentioned app exists */
ret = scm_call(SCM_SVC_TZSCHEDULER, 1, &req,
sizeof(struct qseecom_check_app_ireq),
&resp, sizeof(resp));
if (ret) {
pr_err("scm_call to check if app is already loaded failed\n");
return -EINVAL;
}
if (resp.result == QSEOS_RESULT_FAILURE) {
return 0;
} else {
switch (resp.resp_type) {
/*qsee returned listener type response */
case QSEOS_LISTENER_ID:
pr_err("resp type is of listener type instead of app");
return -EINVAL;
break;
case QSEOS_APP_ID:
return resp.data;
default:
pr_err("invalid resp type (%d) from qsee",
resp.resp_type);
return -ENODEV;
break;
}
}
}
static int qseecom_load_app(struct qseecom_dev_handle *data, void __user *argp)
{
struct qseecom_registered_app_list *entry = NULL;
unsigned long flags = 0;
u32 app_id = 0;
struct ion_handle *ihandle; /* Ion handle */
struct qseecom_load_img_req load_img_req;
int32_t ret;
ion_phys_addr_t pa = 0;
uint32_t len;
struct qseecom_command_scm_resp resp;
struct qseecom_check_app_ireq req;
struct qseecom_load_app_ireq load_req;
/* Copy the relevant information needed for loading the image */
if (__copy_from_user(&load_img_req,
(void __user *)argp,
sizeof(struct qseecom_load_img_req))) {
pr_err("copy_from_user failed\n");
return -EFAULT;
}
/* Vote for the SFPB clock */
ret = qsee_vote_for_clock(data, CLK_SFPB);
if (ret)
pr_warning("Unable to vote for SFPB clock");
req.qsee_cmd_id = QSEOS_APP_LOOKUP_COMMAND;
memcpy(req.app_name, load_img_req.img_name, MAX_APP_NAME_SIZE);
ret = __qseecom_check_app_exists(req);
if (ret < 0)
return ret;
else
app_id = ret;
if (app_id) {
pr_debug("App id %d (%s) already exists\n", app_id,
(char *)(req.app_name));
spin_lock_irqsave(&qseecom.registered_app_list_lock, flags);
list_for_each_entry(entry,
&qseecom.registered_app_list_head, list){
if (entry->app_id == app_id) {
entry->ref_cnt++;
break;
}
}
spin_unlock_irqrestore(
&qseecom.registered_app_list_lock, flags);
} else {
pr_warn("App (%s) does'nt exist, loading apps for first time\n",
(char *)(load_img_req.img_name));
/* Get the handle of the shared fd */
ihandle = ion_import_dma_buf(qseecom.ion_clnt,
load_img_req.ifd_data_fd);
if (IS_ERR_OR_NULL(ihandle)) {
pr_err("Ion client could not retrieve the handle\n");
qsee_disable_clock_vote(data, CLK_SFPB);
return -ENOMEM;
}
/* Get the physical address of the ION BUF */
ret = ion_phys(qseecom.ion_clnt, ihandle, &pa, &len);
/* Populate the structure for sending scm call to load image */
memcpy(load_req.app_name, load_img_req.img_name,
MAX_APP_NAME_SIZE);
load_req.qsee_cmd_id = QSEOS_APP_START_COMMAND;
load_req.mdt_len = load_img_req.mdt_len;
load_req.img_len = load_img_req.img_len;
load_req.phy_addr = pa;
/* SCM_CALL to load the app and get the app_id back */
ret = scm_call(SCM_SVC_TZSCHEDULER, 1, &load_req,
sizeof(struct qseecom_load_app_ireq),
&resp, sizeof(resp));
if (ret) {
pr_err("scm_call to load app failed\n");
if (!IS_ERR_OR_NULL(ihandle))
ion_free(qseecom.ion_clnt, ihandle);
qsee_disable_clock_vote(data, CLK_SFPB);
return -EINVAL;
}
if (resp.result == QSEOS_RESULT_FAILURE) {
pr_err("scm_call rsp.result is QSEOS_RESULT_FAILURE\n");
if (!IS_ERR_OR_NULL(ihandle))
ion_free(qseecom.ion_clnt, ihandle);
qsee_disable_clock_vote(data, CLK_SFPB);
return -EFAULT;
}
if (resp.result == QSEOS_RESULT_INCOMPLETE) {
ret = __qseecom_process_incomplete_cmd(data, &resp);
if (ret) {
pr_err("process_incomplete_cmd failed err: %d\n",
ret);
if (!IS_ERR_OR_NULL(ihandle))
ion_free(qseecom.ion_clnt, ihandle);
qsee_disable_clock_vote(data, CLK_SFPB);
return ret;
}
}
if (resp.result != QSEOS_RESULT_SUCCESS) {
pr_err("scm_call failed resp.result unknown, %d\n",
resp.result);
if (!IS_ERR_OR_NULL(ihandle))
ion_free(qseecom.ion_clnt, ihandle);
qsee_disable_clock_vote(data, CLK_SFPB);
return -EFAULT;
}
app_id = resp.data;
entry = kmalloc(sizeof(*entry), GFP_KERNEL);
if (!entry) {
pr_err("kmalloc failed\n");
qsee_disable_clock_vote(data, CLK_SFPB);
return -ENOMEM;
}
entry->app_id = app_id;
entry->ref_cnt = 1;
/* Deallocate the handle */
if (!IS_ERR_OR_NULL(ihandle))
ion_free(qseecom.ion_clnt, ihandle);
spin_lock_irqsave(&qseecom.registered_app_list_lock, flags);
list_add_tail(&entry->list, &qseecom.registered_app_list_head);
spin_unlock_irqrestore(&qseecom.registered_app_list_lock,
flags);
pr_warn("App with id %d (%s) now loaded\n", app_id,
(char *)(load_img_req.img_name));
}
data->client.app_id = app_id;
load_img_req.app_id = app_id;
if (copy_to_user(argp, &load_img_req, sizeof(load_img_req))) {
pr_err("copy_to_user failed\n");
kzfree(entry);
qsee_disable_clock_vote(data, CLK_SFPB);
return -EFAULT;
}
qsee_disable_clock_vote(data, CLK_SFPB);
return 0;
}
static int __qseecom_cleanup_app(struct qseecom_dev_handle *data)
{
wake_up_all(&qseecom.send_resp_wq);
while (atomic_read(&data->ioctl_count) > 1) {
if (wait_event_freezable(data->abort_wq,
atomic_read(&data->ioctl_count) <= 1)) {
pr_err("Interrupted from abort\n");
return -ERESTARTSYS;
break;
}
}
/* Set unload app */
return 1;
}
static int qseecom_unmap_ion_allocated_memory(struct qseecom_dev_handle *data)
{
int ret = 0;
if (!IS_ERR_OR_NULL(data->client.ihandle)) {
ion_unmap_kernel(qseecom.ion_clnt, data->client.ihandle);
ion_free(qseecom.ion_clnt, data->client.ihandle);
data->client.ihandle = NULL;
}
return ret;
}
static int qseecom_unload_app(struct qseecom_dev_handle *data)
{
unsigned long flags;
int ret = 0;
struct qseecom_command_scm_resp resp;
struct qseecom_registered_app_list *ptr_app;
bool unload = false;
bool found_app = false;
if (data->client.app_id > 0) {
spin_lock_irqsave(&qseecom.registered_app_list_lock, flags);
list_for_each_entry(ptr_app, &qseecom.registered_app_list_head,
list) {
if (ptr_app->app_id == data->client.app_id) {
found_app = true;
if (ptr_app->ref_cnt == 1) {
unload = true;
break;
} else {
ptr_app->ref_cnt--;
pr_debug("Can't unload app(%d) inuse\n",
ptr_app->app_id);
break;
}
}
}
spin_unlock_irqrestore(&qseecom.registered_app_list_lock,
flags);
if (found_app == false) {
pr_err("Cannot find app with id = %d\n",
data->client.app_id);
return -EINVAL;
}
}
if (unload) {
struct qseecom_unload_app_ireq req;
__qseecom_cleanup_app(data);
spin_lock_irqsave(&qseecom.registered_app_list_lock, flags);
list_del(&ptr_app->list);
kzfree(ptr_app);
spin_unlock_irqrestore(&qseecom.registered_app_list_lock,
flags);
/* Populate the structure for sending scm call to load image */
req.qsee_cmd_id = QSEOS_APP_SHUTDOWN_COMMAND;
req.app_id = data->client.app_id;
/* SCM_CALL to unload the app */
ret = scm_call(SCM_SVC_TZSCHEDULER, 1, &req,
sizeof(struct qseecom_unload_app_ireq),
&resp, sizeof(resp));
if (ret) {
pr_err("scm_call to unload app (id = %d) failed\n",
req.app_id);
return -EFAULT;
} else {
pr_warn("App id %d now unloaded\n", req.app_id);
}
if (resp.result == QSEOS_RESULT_INCOMPLETE) {
ret = __qseecom_process_incomplete_cmd(data, &resp);
if (ret) {
pr_err("process_incomplete_cmd fail err: %d\n",
ret);
return ret;
}
}
}
qseecom_unmap_ion_allocated_memory(data);
data->released = true;
return ret;
}
static uint32_t __qseecom_uvirt_to_kphys(struct qseecom_dev_handle *data,
uint32_t virt)
{
return data->client.sb_phys + (virt - data->client.user_virt_sb_base);
}
int __qseecom_process_rpmb_svc_cmd(struct qseecom_dev_handle *data_ptr,
struct qseecom_send_svc_cmd_req *req_ptr,
struct qseecom_client_send_service_ireq *send_svc_ireq_ptr)
{
int ret = 0;
if ((req_ptr == NULL) || (send_svc_ireq_ptr == NULL)) {
pr_err("Error with pointer: req_ptr = %p, send_svc_ptr = %p\n",
req_ptr, send_svc_ireq_ptr);
return -EINVAL;
}
send_svc_ireq_ptr->qsee_cmd_id = req_ptr->cmd_id;
send_svc_ireq_ptr->key_type =
((struct qseecom_rpmb_provision_key *)req_ptr->cmd_req_buf)->key_type;
send_svc_ireq_ptr->req_len = req_ptr->cmd_req_len;
send_svc_ireq_ptr->rsp_ptr = (void *)(__qseecom_uvirt_to_kphys(data_ptr,
(uint32_t)req_ptr->resp_buf));
send_svc_ireq_ptr->rsp_len = req_ptr->resp_len;
pr_debug("CMD ID (%x), KEY_TYPE (%d)\n", send_svc_ireq_ptr->qsee_cmd_id,
((struct qseecom_rpmb_provision_key *)req_ptr->cmd_req_buf)->key_type);
return ret;
}
static int qseecom_send_service_cmd(struct qseecom_dev_handle *data,
void __user *argp)
{
int ret = 0;
struct qseecom_client_send_service_ireq send_svc_ireq;
struct qseecom_command_scm_resp resp;
struct qseecom_send_svc_cmd_req req;
/*struct qseecom_command_scm_resp resp;*/
if (__copy_from_user(&req,
(void __user *)argp,
sizeof(req))) {
pr_err("copy_from_user failed\n");
return -EFAULT;
}
if (req.resp_buf == NULL) {
pr_err("cmd buffer or response buffer is null\n");
return -EINVAL;
}
data->type = QSEECOM_SECURE_SERVICE;
switch (req.cmd_id) {
case QSEE_RPMB_PROVISION_KEY_COMMAND:
case QSEE_RPMB_ERASE_COMMAND:
if (__qseecom_process_rpmb_svc_cmd(data, &req,
&send_svc_ireq))
return -EINVAL;
break;
default:
pr_err("Unsupported cmd_id %d\n", req.cmd_id);
return -EINVAL;
}
ret = scm_call(SCM_SVC_TZSCHEDULER, 1, (const void *) &send_svc_ireq,
sizeof(send_svc_ireq),
&resp, sizeof(resp));
if (ret) {
pr_err("qseecom_scm_call failed with err: %d\n", ret);
return ret;
}
switch (resp.result) {
case QSEOS_RESULT_SUCCESS:
break;
case QSEOS_RESULT_INCOMPLETE:
pr_err("qseos_result_incomplete\n");
ret = __qseecom_process_incomplete_cmd(data, &resp);
if (ret) {
pr_err("process_incomplete_cmd fail: err: %d\n",
ret);
}
break;
case QSEOS_RESULT_FAILURE:
pr_err("process_incomplete_cmd failed err: %d\n", ret);
break;
default:
pr_err("Response result %d not supported\n",
resp.result);
ret = -EINVAL;
break;
}
return ret;
}
static int __qseecom_send_cmd(struct qseecom_dev_handle *data,
struct qseecom_send_cmd_req *req)
{
int ret = 0;
u32 reqd_len_sb_in = 0;
struct qseecom_client_send_data_ireq send_data_req;
struct qseecom_command_scm_resp resp;
if (req->cmd_req_buf == NULL || req->resp_buf == NULL) {
pr_err("cmd buffer or response buffer is null\n");
return -EINVAL;
}
if (req->cmd_req_len <= 0 ||
req->resp_len <= 0 ||
req->cmd_req_len > data->client.sb_length ||
req->resp_len > data->client.sb_length) {
pr_err("cmd buffer length or "
"response buffer length not valid\n");
return -EINVAL;
}
reqd_len_sb_in = req->cmd_req_len + req->resp_len;
if (reqd_len_sb_in > data->client.sb_length) {
pr_debug("Not enough memory to fit cmd_buf and "
"resp_buf. Required: %u, Available: %u\n",
reqd_len_sb_in, data->client.sb_length);
return -ENOMEM;
}
send_data_req.qsee_cmd_id = QSEOS_CLIENT_SEND_DATA_COMMAND;
send_data_req.app_id = data->client.app_id;
send_data_req.req_ptr = (void *)(__qseecom_uvirt_to_kphys(data,
(uint32_t)req->cmd_req_buf));
send_data_req.req_len = req->cmd_req_len;
send_data_req.rsp_ptr = (void *)(__qseecom_uvirt_to_kphys(data,
(uint32_t)req->resp_buf));
send_data_req.rsp_len = req->resp_len;
ret = scm_call(SCM_SVC_TZSCHEDULER, 1, (const void *) &send_data_req,
sizeof(send_data_req),
&resp, sizeof(resp));
if (ret) {
pr_err("scm_call() failed with err: %d (app_id = %d)\n",
ret, data->client.app_id);
return ret;
}
if (resp.result == QSEOS_RESULT_INCOMPLETE) {
ret = __qseecom_process_incomplete_cmd(data, &resp);
if (ret) {
pr_err("process_incomplete_cmd failed err: %d\n", ret);
return ret;
}
} else {
if (resp.result != QSEOS_RESULT_SUCCESS) {
pr_err("Response result %d not supported\n",
resp.result);
ret = -EINVAL;
}
}
return ret;
}
static int qseecom_send_cmd(struct qseecom_dev_handle *data, void __user *argp)
{
int ret = 0;
struct qseecom_send_cmd_req req;
ret = copy_from_user(&req, argp, sizeof(req));
if (ret) {
pr_err("copy_from_user failed\n");
return ret;
}
ret = __qseecom_send_cmd(data, &req);
if (ret)
return ret;
pr_debug("sending cmd_req->rsp size: %u, ptr: 0x%p\n",
req.resp_len, req.resp_buf);
return ret;
}
static int __qseecom_send_cmd_req_clean_up(
struct qseecom_send_modfd_cmd_req *req)
{
char *field;
uint32_t *update;
int ret = 0;
int i = 0;
for (i = 0; i < MAX_ION_FD; i++) {
if (req->ifd_data[i].fd > 0) {
field = (char *)req->cmd_req_buf +
req->ifd_data[i].cmd_buf_offset;
update = (uint32_t *) field;
*update = 0;
}
}
return ret;
}
static int __qseecom_update_with_phy_addr(
struct qseecom_send_modfd_cmd_req *req)
{
struct ion_handle *ihandle;
char *field;
int ret = 0;
int i = 0;
for (i = 0; i < MAX_ION_FD; i++) {
struct sg_table *sg_ptr = NULL;
if (req->ifd_data[i].fd > 0) {
/* Get the handle of the shared fd */
ihandle = ion_import_dma_buf(qseecom.ion_clnt,
req->ifd_data[i].fd);
if (IS_ERR_OR_NULL(ihandle)) {
pr_err("Ion client can't retrieve the handle\n");
return -ENOMEM;
}
field = (char *) req->cmd_req_buf +
req->ifd_data[i].cmd_buf_offset;
/* Populate the cmd data structure with the phys_addr */
sg_ptr = ion_sg_table(qseecom.ion_clnt, ihandle);
if (sg_ptr == NULL) {
pr_err("IOn client could not retrieve sg table\n");
goto err;
}
if (sg_ptr->nents == 0) {
pr_err("Num of scattered entries is 0\n");
goto err;
}
if (sg_ptr->nents > QSEECOM_MAX_SG_ENTRY) {
pr_err("Num of scattered entries");
pr_err(" (%d) is greater than max supported %d\n",
sg_ptr->nents, QSEECOM_MAX_SG_ENTRY);
goto err;
}
if (sg_ptr->nents == 1) {
uint32_t *update;
update = (uint32_t *) field;
*update = (uint32_t)sg_dma_address(sg_ptr->sgl);
} else {
struct qseecom_sg_entry *update;
struct scatterlist *sg;
int j = 0;
update = (struct qseecom_sg_entry *) field;
sg = sg_ptr->sgl;
for (j = 0; j < sg_ptr->nents; j++) {
update->phys_addr = (uint32_t)
sg_dma_address(sg);
update->len = (uint32_t)sg->length;
update++;
sg = sg_next(sg);
}
}
/* Deallocate the handle */
if (!IS_ERR_OR_NULL(ihandle))
ion_free(qseecom.ion_clnt, ihandle);
}
}
return ret;
err:
if (!IS_ERR_OR_NULL(ihandle))
ion_free(qseecom.ion_clnt, ihandle);
return -ENOMEM;
}
static int qseecom_send_modfd_cmd(struct qseecom_dev_handle *data,
void __user *argp)
{
int ret = 0;
struct qseecom_send_modfd_cmd_req req;
struct qseecom_send_cmd_req send_cmd_req;
ret = copy_from_user(&req, argp, sizeof(req));
if (ret) {
pr_err("copy_from_user failed\n");
return ret;
}
send_cmd_req.cmd_req_buf = req.cmd_req_buf;
send_cmd_req.cmd_req_len = req.cmd_req_len;
send_cmd_req.resp_buf = req.resp_buf;
send_cmd_req.resp_len = req.resp_len;
ret = __qseecom_update_with_phy_addr(&req);
if (ret)
return ret;
ret = __qseecom_send_cmd(data, &send_cmd_req);
__qseecom_send_cmd_req_clean_up(&req);
if (ret)
return ret;
pr_debug("sending cmd_req->rsp size: %u, ptr: 0x%p\n",
req.resp_len, req.resp_buf);
return ret;
}
static int __qseecom_listener_has_rcvd_req(struct qseecom_dev_handle *data,
struct qseecom_registered_listener_list *svc)
{
int ret;
ret = (svc->rcv_req_flag != 0);
return ret || data->abort;
}
static int qseecom_receive_req(struct qseecom_dev_handle *data)
{
int ret = 0;
struct qseecom_registered_listener_list *this_lstnr;
this_lstnr = __qseecom_find_svc(data->listener.id);
while (1) {
if (wait_event_freezable(this_lstnr->rcv_req_wq,
__qseecom_listener_has_rcvd_req(data,
this_lstnr))) {
pr_warning("Interrupted: exiting Listener Service = %d\n",
(uint32_t)data->listener.id);
/* woken up for different reason */
return -ERESTARTSYS;
}
if (data->abort) {
pr_err("Aborting Listener Service = %d\n",
(uint32_t)data->listener.id);
return -ENODEV;
}
this_lstnr->rcv_req_flag = 0;
break;
}
return ret;
}
static bool __qseecom_is_fw_image_valid(const struct firmware *fw_entry)
{
struct elf32_hdr *ehdr;
if (fw_entry->size < sizeof(*ehdr)) {
pr_err("%s: Not big enough to be an elf header\n",
qseecom.pdev->init_name);
return false;
}
ehdr = (struct elf32_hdr *)fw_entry->data;
if (memcmp(ehdr->e_ident, ELFMAG, SELFMAG)) {
pr_err("%s: Not an elf header\n",
qseecom.pdev->init_name);
return false;
}
if (ehdr->e_phnum == 0) {
pr_err("%s: No loadable segments\n",
qseecom.pdev->init_name);
return false;
}
if (sizeof(struct elf32_phdr) * ehdr->e_phnum +
sizeof(struct elf32_hdr) > fw_entry->size) {
pr_err("%s: Program headers not within mdt\n",
qseecom.pdev->init_name);
return false;
}
return true;
}
static int __qseecom_get_fw_size(char *appname, uint32_t *fw_size)
{
int ret = -1;
int i = 0, rc = 0;
const struct firmware *fw_entry = NULL;
struct elf32_phdr *phdr;
char fw_name[MAX_APP_NAME_SIZE];
struct elf32_hdr *ehdr;
int num_images = 0;
snprintf(fw_name, sizeof(fw_name), "%s.mdt", appname);
rc = request_firmware(&fw_entry, fw_name, qseecom.pdev);
if (rc) {
pr_err("error with request_firmware\n");
ret = -EIO;
goto err;
}
if (!__qseecom_is_fw_image_valid(fw_entry)) {
ret = -EIO;
goto err;
}
*fw_size = fw_entry->size;
phdr = (struct elf32_phdr *)(fw_entry->data + sizeof(struct elf32_hdr));
ehdr = (struct elf32_hdr *)fw_entry->data;
num_images = ehdr->e_phnum;
release_firmware(fw_entry);
for (i = 0; i < num_images; i++, phdr++) {
memset(fw_name, 0, sizeof(fw_name));
snprintf(fw_name, ARRAY_SIZE(fw_name), "%s.b%02d", appname, i);
ret = request_firmware(&fw_entry, fw_name, qseecom.pdev);
if (ret)
goto err;
*fw_size += fw_entry->size;
release_firmware(fw_entry);
}
return ret;
err:
if (fw_entry)
release_firmware(fw_entry);
*fw_size = 0;
return ret;
}
static int __qseecom_get_fw_data(char *appname, u8 *img_data,
struct qseecom_load_app_ireq *load_req)
{
int ret = -1;
int i = 0, rc = 0;
const struct firmware *fw_entry = NULL;
char fw_name[MAX_APP_NAME_SIZE];
u8 *img_data_ptr = img_data;
struct elf32_hdr *ehdr;
int num_images = 0;
snprintf(fw_name, sizeof(fw_name), "%s.mdt", appname);
rc = request_firmware(&fw_entry, fw_name, qseecom.pdev);
if (rc) {
ret = -EIO;
goto err;
}
load_req->img_len = fw_entry->size;
memcpy(img_data_ptr, fw_entry->data, fw_entry->size);
img_data_ptr = img_data_ptr + fw_entry->size;
load_req->mdt_len = fw_entry->size; /*Get MDT LEN*/
ehdr = (struct elf32_hdr *)fw_entry->data;
num_images = ehdr->e_phnum;
release_firmware(fw_entry);
for (i = 0; i < num_images; i++) {
snprintf(fw_name, ARRAY_SIZE(fw_name), "%s.b%02d", appname, i);
ret = request_firmware(&fw_entry, fw_name, qseecom.pdev);
if (ret) {
pr_err("Failed to locate blob %s\n", fw_name);
goto err;
}
memcpy(img_data_ptr, fw_entry->data, fw_entry->size);
img_data_ptr = img_data_ptr + fw_entry->size;
load_req->img_len += fw_entry->size;
release_firmware(fw_entry);
}
load_req->phy_addr = virt_to_phys(img_data);
return ret;
err:
release_firmware(fw_entry);
return ret;
}
static int __qseecom_load_fw(struct qseecom_dev_handle *data, char *appname)
{
int ret = -1;
uint32_t fw_size = 0;
struct qseecom_load_app_ireq load_req = {0, 0, 0, 0};
struct qseecom_command_scm_resp resp;
u8 *img_data = NULL;
if (__qseecom_get_fw_size(appname, &fw_size))
return -EIO;
img_data = kzalloc(fw_size, GFP_KERNEL);
if (!img_data) {
pr_err("Failied to allocate memory for copying image data\n");
return -ENOMEM;
}
ret = __qseecom_get_fw_data(appname, img_data, &load_req);
if (ret) {
kzfree(img_data);
return -EIO;
}
/* Populate the remaining parameters */
load_req.qsee_cmd_id = QSEOS_APP_START_COMMAND;
memcpy(load_req.app_name, appname, MAX_APP_NAME_SIZE);
ret = qsee_vote_for_clock(data, CLK_SFPB);
if (ret) {
kzfree(img_data);
pr_warning("Unable to vote for SFPB clock");
return -EIO;
}
/* SCM_CALL to load the image */
ret = scm_call(SCM_SVC_TZSCHEDULER, 1, &load_req,
sizeof(struct qseecom_load_app_ireq),
&resp, sizeof(resp));
kzfree(img_data);
if (ret) {
pr_err("scm_call to load failed : ret %d\n", ret);
qsee_disable_clock_vote(data, CLK_SFPB);
return -EIO;
}
switch (resp.result) {
case QSEOS_RESULT_SUCCESS:
ret = resp.data;
break;
case QSEOS_RESULT_INCOMPLETE:
ret = __qseecom_process_incomplete_cmd(data, &resp);
if (ret)
pr_err("process_incomplete_cmd FAILED\n");
else
ret = resp.data;
break;
case QSEOS_RESULT_FAILURE:
pr_err("scm call failed with response QSEOS_RESULT FAILURE\n");
break;
default:
pr_err("scm call return unknown response %d\n", resp.result);
ret = -EINVAL;
break;
}
qsee_disable_clock_vote(data, CLK_SFPB);
return ret;
}
static int qseecom_load_commonlib_image(struct qseecom_dev_handle *data)
{
int32_t ret = 0;
uint32_t fw_size = 0;
struct qseecom_load_app_ireq load_req = {0, 0, 0, 0};
struct qseecom_command_scm_resp resp;
u8 *img_data = NULL;
if (__qseecom_get_fw_size("cmnlib", &fw_size))
return -EIO;
img_data = kzalloc(fw_size, GFP_KERNEL);
if (!img_data) {
pr_err("Mem allocation for lib image data failed\n");
return -ENOMEM;
}
ret = __qseecom_get_fw_data("cmnlib", img_data, &load_req);
if (ret) {
kzfree(img_data);
return -EIO;
}
/* Populate the remaining parameters */
load_req.qsee_cmd_id = QSEOS_LOAD_SERV_IMAGE_COMMAND;
/* Vote for the SFPB clock */
ret = qsee_vote_for_clock(data, CLK_SFPB);
if (ret) {
pr_err("Unable to vote for SFPB clock: ret = %d", ret);
kzfree(img_data);
return -EIO;
}
/* SCM_CALL to load the image */
ret = scm_call(SCM_SVC_TZSCHEDULER, 1, &load_req,
sizeof(struct qseecom_load_lib_image_ireq),
&resp, sizeof(resp));
if (ret) {
pr_err("scm_call to load failed : ret %d\n", ret);
ret = -EIO;
} else {
switch (resp.result) {
case QSEOS_RESULT_SUCCESS:
break;
case QSEOS_RESULT_FAILURE:
pr_err("scm call failed w/response result%d\n",
resp.result);
ret = -EINVAL;
break;
case QSEOS_RESULT_INCOMPLETE:
ret = __qseecom_process_incomplete_cmd(data, &resp);
if (ret)
pr_err("process_incomplete_cmd failed err: %d\n",
ret);
break;
default:
pr_err("scm call return unknown response %d\n",
resp.result);
ret = -EINVAL;
break;
}
}
kzfree(img_data);
qsee_disable_clock_vote(data, CLK_SFPB);
return ret;
}
static int qseecom_unload_commonlib_image(void)
{
int ret = -EINVAL;
struct qseecom_unload_lib_image_ireq unload_req = {0};
struct qseecom_command_scm_resp resp;
/* Populate the remaining parameters */
unload_req.qsee_cmd_id = QSEOS_UNLOAD_SERV_IMAGE_COMMAND;
/* SCM_CALL to load the image */
ret = scm_call(SCM_SVC_TZSCHEDULER, 1, &unload_req,
sizeof(struct qseecom_unload_lib_image_ireq),
&resp, sizeof(resp));
if (ret) {
pr_err("scm_call to unload lib failed : ret %d\n", ret);
ret = -EIO;
} else {
switch (resp.result) {
case QSEOS_RESULT_SUCCESS:
break;
case QSEOS_RESULT_FAILURE:
pr_err("scm fail resp.result QSEOS_RESULT FAILURE\n");
break;
default:
pr_err("scm call return unknown response %d\n",
resp.result);
ret = -EINVAL;
break;
}
}
return ret;
}
int qseecom_start_app(struct qseecom_handle **handle,
char *app_name, uint32_t size)
{
int32_t ret = 0;
unsigned long flags = 0;
struct qseecom_dev_handle *data = NULL;
struct qseecom_check_app_ireq app_ireq;
struct qseecom_registered_app_list *entry = NULL;
struct qseecom_registered_kclient_list *kclient_entry = NULL;
bool found_app = false;
uint32_t len;
ion_phys_addr_t pa;
*handle = kzalloc(sizeof(struct qseecom_handle), GFP_KERNEL);
if (!(*handle)) {
pr_err("failed to allocate memory for kernel client handle\n");
return -ENOMEM;
}
data = kzalloc(sizeof(*data), GFP_KERNEL);
if (!data) {
pr_err("kmalloc failed\n");
if (ret == 0) {
kfree(*handle);
*handle = NULL;
}
return -ENOMEM;
}
data->abort = 0;
data->type = QSEECOM_CLIENT_APP;
data->released = false;
data->client.sb_length = size;
data->client.user_virt_sb_base = 0;
data->client.ihandle = NULL;
init_waitqueue_head(&data->abort_wq);
atomic_set(&data->ioctl_count, 0);
data->client.ihandle = ion_alloc(qseecom.ion_clnt, size, 4096,
ION_HEAP(ION_QSECOM_HEAP_ID), 0);
if (IS_ERR_OR_NULL(data->client.ihandle)) {
pr_err("Ion client could not retrieve the handle\n");
kfree(data);
kfree(*handle);
*handle = NULL;
return -EINVAL;
}
if (qseecom.qsee_version > QSEEE_VERSION_00) {
mutex_lock(&app_access_lock);
if (qseecom.commonlib_loaded == false) {
ret = qseecom_load_commonlib_image(data);
if (ret == 0)
qseecom.commonlib_loaded = true;
}
mutex_unlock(&app_access_lock);
}
if (ret) {
pr_err("Failed to load commonlib image\n");
kfree(data);
kfree(*handle);
*handle = NULL;
return -EIO;
}
app_ireq.qsee_cmd_id = QSEOS_APP_LOOKUP_COMMAND;
memcpy(app_ireq.app_name, app_name, MAX_APP_NAME_SIZE);
ret = __qseecom_check_app_exists(app_ireq);
if (ret < 0) {
kzfree(data);
kfree(*handle);
*handle = NULL;
return -EINVAL;
}
data->client.app_id = ret;
if (ret > 0) {
pr_warn("App id %d for [%s] app exists\n", ret,
(char *)app_ireq.app_name);
spin_lock_irqsave(&qseecom.registered_app_list_lock, flags);
list_for_each_entry(entry,
&qseecom.registered_app_list_head, list){
if (entry->app_id == ret) {
entry->ref_cnt++;
found_app = true;
break;
}
}
spin_unlock_irqrestore(
&qseecom.registered_app_list_lock, flags);
if (!found_app)
pr_warn("App_id %d [%s] was loaded but not registered\n",
ret, (char *)app_ireq.app_name);
} else {
/* load the app and get the app_id */
pr_debug("%s: Loading app for the first time'\n",
qseecom.pdev->init_name);
mutex_lock(&app_access_lock);
ret = __qseecom_load_fw(data, app_name);
mutex_unlock(&app_access_lock);
if (ret < 0) {
kfree(*handle);
kfree(data);
*handle = NULL;
return ret;
}
data->client.app_id = ret;
}
if (!found_app) {
entry = kmalloc(sizeof(*entry), GFP_KERNEL);
if (!entry) {
pr_err("kmalloc failed\n");
kfree(data);
kfree(*handle);
*handle = NULL;
return -ENOMEM;
}
entry->app_id = ret;
entry->ref_cnt = 1;
spin_lock_irqsave(&qseecom.registered_app_list_lock, flags);
list_add_tail(&entry->list, &qseecom.registered_app_list_head);
spin_unlock_irqrestore(&qseecom.registered_app_list_lock,
flags);
}
/* Get the physical address of the ION BUF */
ret = ion_phys(qseecom.ion_clnt, data->client.ihandle, &pa, &len);
/* Populate the structure for sending scm call to load image */
data->client.sb_virt = (char *) ion_map_kernel(qseecom.ion_clnt,
data->client.ihandle);
data->client.user_virt_sb_base = (uint32_t)data->client.sb_virt;
data->client.sb_phys = pa;
(*handle)->dev = (void *)data;
(*handle)->sbuf = (unsigned char *)data->client.sb_virt;
(*handle)->sbuf_len = data->client.sb_length;
kclient_entry = kzalloc(sizeof(*kclient_entry), GFP_KERNEL);
if (!kclient_entry) {
pr_err("kmalloc failed\n");
return -ENOMEM;
}
kclient_entry->handle = *handle;
spin_lock_irqsave(&qseecom.registered_kclient_list_lock, flags);
list_add_tail(&kclient_entry->list,
&qseecom.registered_kclient_list_head);
spin_unlock_irqrestore(&qseecom.registered_kclient_list_lock, flags);
return 0;
}
EXPORT_SYMBOL(qseecom_start_app);
int qseecom_shutdown_app(struct qseecom_handle **handle)
{
int ret = -EINVAL;
struct qseecom_dev_handle *data;
struct qseecom_registered_kclient_list *kclient = NULL;
unsigned long flags = 0;
bool found_handle = false;
if ((handle == NULL) || (*handle == NULL)) {
pr_err("Handle is not initialized\n");
return -EINVAL;
}
data = (struct qseecom_dev_handle *) ((*handle)->dev);
spin_lock_irqsave(&qseecom.registered_kclient_list_lock, flags);
list_for_each_entry(kclient, &qseecom.registered_kclient_list_head,
list) {
if (kclient->handle == (*handle)) {
list_del(&kclient->list);
found_handle = true;
break;
}
}
spin_unlock_irqrestore(&qseecom.registered_kclient_list_lock, flags);
if (!found_handle)
pr_err("Unable to find the handle, exiting\n");
else
ret = qseecom_unload_app(data);
if (data->fast_load_enabled == true)
qsee_disable_clock_vote(data, CLK_SFPB);
if (data->perf_enabled == true)
qsee_disable_clock_vote(data, CLK_DFAB);
if (ret == 0) {
kzfree(data);
kzfree(*handle);
kzfree(kclient);
*handle = NULL;
}
return ret;
}
EXPORT_SYMBOL(qseecom_shutdown_app);
int qseecom_send_command(struct qseecom_handle *handle, void *send_buf,
uint32_t sbuf_len, void *resp_buf, uint32_t rbuf_len)
{
int ret = 0;
struct qseecom_send_cmd_req req = {0, 0, 0, 0};
struct qseecom_dev_handle *data;
if (handle == NULL) {
pr_err("Handle is not initialized\n");
return -EINVAL;
}
data = handle->dev;
req.cmd_req_len = sbuf_len;
req.resp_len = rbuf_len;
req.cmd_req_buf = send_buf;
req.resp_buf = resp_buf;
mutex_lock(&app_access_lock);
atomic_inc(&data->ioctl_count);
ret = __qseecom_send_cmd(data, &req);
atomic_dec(&data->ioctl_count);
mutex_unlock(&app_access_lock);
if (ret)
return ret;
pr_debug("sending cmd_req->rsp size: %u, ptr: 0x%p\n",
req.resp_len, req.resp_buf);
return ret;
}
EXPORT_SYMBOL(qseecom_send_command);
int qseecom_set_bandwidth(struct qseecom_handle *handle, bool high)
{
int ret = 0;
if ((handle == NULL) || (handle->dev == NULL)) {
pr_err("No valid kernel client\n");
return -EINVAL;
}
if (high) {
ret = qsee_vote_for_clock(handle->dev, CLK_DFAB);
if (ret)
pr_err("Failed to vote for DFAB clock%d\n", ret);
ret = qsee_vote_for_clock(handle->dev, CLK_SFPB);
if (ret) {
pr_err("Failed to vote for SFPB clock%d\n", ret);
qsee_disable_clock_vote(handle->dev, CLK_DFAB);
}
} else {
qsee_disable_clock_vote(handle->dev, CLK_DFAB);
qsee_disable_clock_vote(handle->dev, CLK_SFPB);
}
return ret;
}
EXPORT_SYMBOL(qseecom_set_bandwidth);
static int qseecom_send_resp(void)
{
qseecom.send_resp_flag = 1;
wake_up_interruptible(&qseecom.send_resp_wq);
return 0;
}
static int qseecom_get_qseos_version(struct qseecom_dev_handle *data,
void __user *argp)
{
struct qseecom_qseos_version_req req;
if (copy_from_user(&req, argp, sizeof(req))) {
pr_err("copy_from_user failed");
return -EINVAL;
}
req.qseos_version = qseecom.qseos_version;
if (copy_to_user(argp, &req, sizeof(req))) {
pr_err("copy_to_user failed");
return -EINVAL;
}
return 0;
}
static int __qseecom_enable_clk(enum qseecom_ce_hw_instance ce)
{
int rc = 0;
struct qseecom_clk *qclk;
if (ce == CLK_QSEE)
qclk = &qseecom.qsee;
else
qclk = &qseecom.ce_drv;
mutex_lock(&clk_access_lock);
if (qclk->clk_access_cnt == ULONG_MAX)
goto err;
if (qclk->clk_access_cnt > 0) {
qclk->clk_access_cnt++;
mutex_unlock(&clk_access_lock);
return rc;
}
/* Enable CE core clk */
rc = clk_prepare_enable(qclk->ce_core_clk);
if (rc) {
pr_err("Unable to enable/prepare CE core clk\n");
goto err;
}
/* Enable CE clk */
rc = clk_prepare_enable(qclk->ce_clk);
if (rc) {
pr_err("Unable to enable/prepare CE iface clk\n");
goto ce_clk_err;
}
/* Enable AXI clk */
rc = clk_prepare_enable(qclk->ce_bus_clk);
if (rc) {
pr_err("Unable to enable/prepare CE bus clk\n");
goto ce_bus_clk_err;
}
qclk->clk_access_cnt++;
mutex_unlock(&clk_access_lock);
return 0;
ce_bus_clk_err:
clk_disable_unprepare(qclk->ce_clk);
ce_clk_err:
clk_disable_unprepare(qclk->ce_core_clk);
err:
mutex_unlock(&clk_access_lock);
return -EIO;
}
static void __qseecom_disable_clk(enum qseecom_ce_hw_instance ce)
{
struct qseecom_clk *qclk;
if (ce == CLK_QSEE)
qclk = &qseecom.qsee;
else
qclk = &qseecom.ce_drv;
mutex_lock(&clk_access_lock);
if (qclk->clk_access_cnt == 0) {
mutex_unlock(&clk_access_lock);
return;
}
if (qclk->clk_access_cnt == 1) {
if (qclk->ce_clk != NULL)
clk_disable_unprepare(qclk->ce_clk);
if (qclk->ce_core_clk != NULL)
clk_disable_unprepare(qclk->ce_core_clk);
if (qclk->ce_bus_clk != NULL)
clk_disable_unprepare(qclk->ce_bus_clk);
}
qclk->clk_access_cnt--;
mutex_unlock(&clk_access_lock);
}
static int qsee_vote_for_clock(struct qseecom_dev_handle *data,
int32_t clk_type)
{
int ret = 0;
struct qseecom_clk *qclk;
qclk = &qseecom.qsee;
if (!qseecom.qsee_perf_client)
return ret;
switch (clk_type) {
case CLK_DFAB:
mutex_lock(&qsee_bw_mutex);
if (!qseecom.qsee_bw_count) {
if (qseecom.qsee_sfpb_bw_count > 0)
ret = msm_bus_scale_client_update_request(
qseecom.qsee_perf_client, 3);
else {
if (qclk->ce_core_src_clk != NULL)
ret = __qseecom_enable_clk(CLK_QSEE);
if (!ret) {
ret =
msm_bus_scale_client_update_request(
qseecom.qsee_perf_client, 1);
if ((ret) &&
(qclk->ce_core_src_clk != NULL))
__qseecom_disable_clk(CLK_QSEE);
}
}
if (ret)
pr_err("DFAB Bandwidth req failed (%d)\n",
ret);
else {
qseecom.qsee_bw_count++;
data->perf_enabled = true;
}
} else {
qseecom.qsee_bw_count++;
data->perf_enabled = true;
}
mutex_unlock(&qsee_bw_mutex);
break;
case CLK_SFPB:
mutex_lock(&qsee_bw_mutex);
if (!qseecom.qsee_sfpb_bw_count) {
if (qseecom.qsee_bw_count > 0)
ret = msm_bus_scale_client_update_request(
qseecom.qsee_perf_client, 3);
else {
if (qclk->ce_core_src_clk != NULL)
ret = __qseecom_enable_clk(CLK_QSEE);
if (!ret) {
ret =
msm_bus_scale_client_update_request(
qseecom.qsee_perf_client, 2);
if ((ret) &&
(qclk->ce_core_src_clk != NULL))
__qseecom_disable_clk(CLK_QSEE);
}
}
if (ret)
pr_err("SFPB Bandwidth req failed (%d)\n",
ret);
else {
qseecom.qsee_sfpb_bw_count++;
data->fast_load_enabled = true;
}
} else {
qseecom.qsee_sfpb_bw_count++;
data->fast_load_enabled = true;
}
mutex_unlock(&qsee_bw_mutex);
break;
default:
pr_err("Clock type not defined\n");
break;
}
return ret;
}
static void qsee_disable_clock_vote(struct qseecom_dev_handle *data,
int32_t clk_type)
{
int32_t ret = 0;
struct qseecom_clk *qclk;
qclk = &qseecom.qsee;
if (!qseecom.qsee_perf_client)
return;
switch (clk_type) {
case CLK_DFAB:
mutex_lock(&qsee_bw_mutex);
if (qseecom.qsee_bw_count == 0) {
pr_err("Client error.Extra call to disable DFAB clk\n");
mutex_unlock(&qsee_bw_mutex);
return;
}
if (qseecom.qsee_bw_count == 1) {
if (qseecom.qsee_sfpb_bw_count > 0)
ret = msm_bus_scale_client_update_request(
qseecom.qsee_perf_client, 2);
else {
ret = msm_bus_scale_client_update_request(
qseecom.qsee_perf_client, 0);
if ((!ret) && (qclk->ce_core_src_clk != NULL))
__qseecom_disable_clk(CLK_QSEE);
}
if (ret)
pr_err("SFPB Bandwidth req fail (%d)\n",
ret);
else {
qseecom.qsee_bw_count--;
data->perf_enabled = false;
}
} else {
qseecom.qsee_bw_count--;
data->perf_enabled = false;
}
mutex_unlock(&qsee_bw_mutex);
break;
case CLK_SFPB:
mutex_lock(&qsee_bw_mutex);
if (qseecom.qsee_sfpb_bw_count == 0) {
pr_err("Client error.Extra call to disable SFPB clk\n");
mutex_unlock(&qsee_bw_mutex);
return;
}
if (qseecom.qsee_sfpb_bw_count == 1) {
if (qseecom.qsee_bw_count > 0)
ret = msm_bus_scale_client_update_request(
qseecom.qsee_perf_client, 1);
else {
ret = msm_bus_scale_client_update_request(
qseecom.qsee_perf_client, 0);
if ((!ret) && (qclk->ce_core_src_clk != NULL))
__qseecom_disable_clk(CLK_QSEE);
}
if (ret)
pr_err("SFPB Bandwidth req fail (%d)\n",
ret);
else {
qseecom.qsee_sfpb_bw_count--;
data->fast_load_enabled = false;
}
} else {
qseecom.qsee_sfpb_bw_count--;
data->fast_load_enabled = false;
}
mutex_unlock(&qsee_bw_mutex);
break;
default:
pr_err("Clock type not defined\n");
break;
}
}
static int qseecom_load_external_elf(struct qseecom_dev_handle *data,
void __user *argp)
{
struct ion_handle *ihandle; /* Ion handle */
struct qseecom_load_img_req load_img_req;
int ret;
int set_cpu_ret = 0;
ion_phys_addr_t pa = 0;
uint32_t len;
struct cpumask mask;
struct qseecom_load_app_ireq load_req;
struct qseecom_command_scm_resp resp;
/* Copy the relevant information needed for loading the image */
if (__copy_from_user(&load_img_req,
(void __user *)argp,
sizeof(struct qseecom_load_img_req))) {
pr_err("copy_from_user failed\n");
return -EFAULT;
}
/* Get the handle of the shared fd */
ihandle = ion_import_dma_buf(qseecom.ion_clnt,
load_img_req.ifd_data_fd);
if (IS_ERR_OR_NULL(ihandle)) {
pr_err("Ion client could not retrieve the handle\n");
return -ENOMEM;
}
/* Get the physical address of the ION BUF */
ret = ion_phys(qseecom.ion_clnt, ihandle, &pa, &len);
/* Populate the structure for sending scm call to load image */
load_req.qsee_cmd_id = QSEOS_LOAD_EXTERNAL_ELF_COMMAND;
load_req.mdt_len = load_img_req.mdt_len;
load_req.img_len = load_img_req.img_len;
load_req.phy_addr = pa;
/* SCM_CALL tied to Core0 */
mask = CPU_MASK_CPU0;
set_cpu_ret = set_cpus_allowed_ptr(current, &mask);
if (set_cpu_ret) {
pr_err("set_cpus_allowed_ptr failed : ret %d\n",
set_cpu_ret);
ret = -EFAULT;
goto qseecom_load_external_elf_set_cpu_err;
}
/* Vote for the SFPB clock */
ret = qsee_vote_for_clock(data, CLK_SFPB);
if (ret) {
pr_err("Unable to vote for SFPB clock: ret = %d", ret);
ret = -EIO;
goto qseecom_load_external_elf_set_cpu_err;
}
/* SCM_CALL to load the external elf */
ret = scm_call(SCM_SVC_TZSCHEDULER, 1, &load_req,
sizeof(struct qseecom_load_app_ireq),
&resp, sizeof(resp));
if (ret) {
pr_err("scm_call to load failed : ret %d\n",
ret);
ret = -EFAULT;
goto qseecom_load_external_elf_scm_err;
}
if (resp.result == QSEOS_RESULT_INCOMPLETE) {
ret = __qseecom_process_incomplete_cmd(data, &resp);
if (ret)
pr_err("process_incomplete_cmd failed err: %d\n",
ret);
} else {
if (resp.result != QSEOS_RESULT_SUCCESS) {
pr_err("scm_call to load image failed resp.result =%d\n",
resp.result);
ret = -EFAULT;
}
}
qseecom_load_external_elf_scm_err:
/* Restore the CPU mask */
mask = CPU_MASK_ALL;
set_cpu_ret = set_cpus_allowed_ptr(current, &mask);
if (set_cpu_ret) {
pr_err("set_cpus_allowed_ptr failed to restore mask: ret %d\n",
set_cpu_ret);
ret = -EFAULT;
}
qseecom_load_external_elf_set_cpu_err:
/* Deallocate the handle */
if (!IS_ERR_OR_NULL(ihandle))
ion_free(qseecom.ion_clnt, ihandle);
qsee_disable_clock_vote(data, CLK_SFPB);
return ret;
}
static int qseecom_unload_external_elf(struct qseecom_dev_handle *data)
{
int ret = 0;
int set_cpu_ret = 0;
struct qseecom_command_scm_resp resp;
struct qseecom_unload_app_ireq req;
struct cpumask mask;
/* Populate the structure for sending scm call to unload image */
req.qsee_cmd_id = QSEOS_UNLOAD_EXTERNAL_ELF_COMMAND;
/* SCM_CALL tied to Core0 */
mask = CPU_MASK_CPU0;
ret = set_cpus_allowed_ptr(current, &mask);
if (ret) {
pr_err("set_cpus_allowed_ptr failed : ret %d\n",
ret);
return -EFAULT;
}
/* SCM_CALL to unload the external elf */
ret = scm_call(SCM_SVC_TZSCHEDULER, 1, &req,
sizeof(struct qseecom_unload_app_ireq),
&resp, sizeof(resp));
if (ret) {
pr_err("scm_call to unload failed : ret %d\n",
ret);
ret = -EFAULT;
goto qseecom_unload_external_elf_scm_err;
}
if (resp.result == QSEOS_RESULT_INCOMPLETE) {
ret = __qseecom_process_incomplete_cmd(data, &resp);
if (ret)
pr_err("process_incomplete_cmd fail err: %d\n",
ret);
} else {
if (resp.result != QSEOS_RESULT_SUCCESS) {
pr_err("scm_call to unload image failed resp.result =%d\n",
resp.result);
ret = -EFAULT;
}
}
qseecom_unload_external_elf_scm_err:
/* Restore the CPU mask */
mask = CPU_MASK_ALL;
set_cpu_ret = set_cpus_allowed_ptr(current, &mask);
if (set_cpu_ret) {
pr_err("set_cpus_allowed_ptr failed to restore mask: ret %d\n",
set_cpu_ret);
ret = -EFAULT;
}
return ret;
}
static int qseecom_query_app_loaded(struct qseecom_dev_handle *data,
void __user *argp)
{
int32_t ret;
struct qseecom_qseos_app_load_query query_req;
struct qseecom_check_app_ireq req;
struct qseecom_registered_app_list *entry = NULL;
unsigned long flags = 0;
/* Copy the relevant information needed for loading the image */
if (__copy_from_user(&query_req,
(void __user *)argp,
sizeof(struct qseecom_qseos_app_load_query))) {
pr_err("copy_from_user failed\n");
return -EFAULT;
}
req.qsee_cmd_id = QSEOS_APP_LOOKUP_COMMAND;
memcpy(req.app_name, query_req.app_name, MAX_APP_NAME_SIZE);
ret = __qseecom_check_app_exists(req);
if ((ret == -EINVAL) || (ret == -ENODEV)) {
pr_err(" scm call to check if app is loaded failed");
return ret; /* scm call failed */
} else if (ret > 0) {
pr_debug("App id %d (%s) already exists\n", ret,
(char *)(req.app_name));
spin_lock_irqsave(&qseecom.registered_app_list_lock, flags);
list_for_each_entry(entry,
&qseecom.registered_app_list_head, list){
if (entry->app_id == ret) {
entry->ref_cnt++;
break;
}
}
spin_unlock_irqrestore(
&qseecom.registered_app_list_lock, flags);
data->client.app_id = ret;
query_req.app_id = ret;
if (copy_to_user(argp, &query_req, sizeof(query_req))) {
pr_err("copy_to_user failed\n");
return -EFAULT;
}
return -EEXIST; /* app already loaded */
} else {
return 0; /* app not loaded */
}
}
static int __qseecom_get_ce_pipe_info(
enum qseecom_key_management_usage_type usage,
uint32_t *pipe, uint32_t *ce_hw)
{
int ret;
switch (usage) {
case QSEOS_KM_USAGE_DISK_ENCRYPTION:
if (qseecom.ce_info.disk_encrypt_pipe == 0xFF ||
qseecom.ce_info.hlos_ce_hw_instance == 0xFF) {
pr_err("nfo unavailable: disk encr pipe %d ce_hw %d\n",
qseecom.ce_info.disk_encrypt_pipe,
qseecom.ce_info.hlos_ce_hw_instance);
ret = -EINVAL;
} else {
*pipe = qseecom.ce_info.disk_encrypt_pipe;
*ce_hw = qseecom.ce_info.hlos_ce_hw_instance;
ret = 0;
}
break;
default:
ret = -EINVAL;
break;
}
return ret;
}
static int __qseecom_generate_and_save_key(struct qseecom_dev_handle *data,
enum qseecom_key_management_usage_type usage,
uint8_t *key_id, uint32_t flags)
{
struct qseecom_key_generate_ireq ireq;
struct qseecom_command_scm_resp resp;
int ret;
if (usage != QSEOS_KM_USAGE_DISK_ENCRYPTION) {
pr_err("Error:: unsupported usage %d\n", usage);
return -EFAULT;
}
memcpy(ireq.key_id, key_id, QSEECOM_KEY_ID_SIZE);
ireq.flags = flags;
ireq.qsee_command_id = QSEOS_GENERATE_KEY;
__qseecom_enable_clk(CLK_QSEE);
ret = scm_call(SCM_SVC_TZSCHEDULER, 1,
&ireq, sizeof(struct qseecom_key_generate_ireq),
&resp, sizeof(resp));
if (ret) {
pr_err("scm call to generate key failed : %d\n", ret);
__qseecom_disable_clk(CLK_QSEE);
return ret;
}
switch (resp.result) {
case QSEOS_RESULT_SUCCESS:
break;
case QSEOS_RESULT_FAIL_KEY_ID_EXISTS:
pr_debug("process_incomplete_cmd return Key ID exists.\n");
break;
case QSEOS_RESULT_INCOMPLETE:
ret = __qseecom_process_incomplete_cmd(data, &resp);
if (ret) {
if (resp.result == QSEOS_RESULT_FAIL_KEY_ID_EXISTS) {
pr_debug("process_incomplete_cmd return Key ID exists.\n");
ret = 0;
} else {
pr_err("process_incomplete_cmd FAILED, resp.result %d\n",
resp.result);
}
}
break;
case QSEOS_RESULT_FAILURE:
default:
pr_err("gen key scm call failed resp.result %d\n", resp.result);
ret = -EINVAL;
break;
}
__qseecom_disable_clk(CLK_QSEE);
return ret;
}
static int __qseecom_delete_saved_key(struct qseecom_dev_handle *data,
enum qseecom_key_management_usage_type usage,
uint8_t *key_id, uint32_t flags)
{
struct qseecom_key_delete_ireq ireq;
struct qseecom_command_scm_resp resp;
int ret;
if (usage != QSEOS_KM_USAGE_DISK_ENCRYPTION) {
pr_err("Error:: unsupported usage %d\n", usage);
return -EFAULT;
}
memcpy(ireq.key_id, key_id, QSEECOM_KEY_ID_SIZE);
ireq.flags = flags;
ireq.qsee_command_id = QSEOS_DELETE_KEY;
__qseecom_enable_clk(CLK_QSEE);
ret = scm_call(SCM_SVC_TZSCHEDULER, 1,
&ireq, sizeof(struct qseecom_key_delete_ireq),
&resp, sizeof(struct qseecom_command_scm_resp));
if (ret) {
pr_err("scm call to delete key failed : %d\n", ret);
__qseecom_disable_clk(CLK_QSEE);
return ret;
}
switch (resp.result) {
case QSEOS_RESULT_SUCCESS:
break;
case QSEOS_RESULT_INCOMPLETE:
ret = __qseecom_process_incomplete_cmd(data, &resp);
if (ret)
pr_err("process_incomplete_cmd FAILED, resp.result %d\n",
resp.result);
break;
case QSEOS_RESULT_FAILURE:
default:
pr_err("Delete key scm call failed resp.result %d\n",
resp.result);
ret = -EINVAL;
break;
}
__qseecom_disable_clk(CLK_QSEE);
return ret;
}
static int __qseecom_set_clear_ce_key(struct qseecom_dev_handle *data,
enum qseecom_key_management_usage_type usage,
struct qseecom_set_key_parameter *set_key_para)
{
struct qseecom_key_select_ireq ireq;
struct qseecom_command_scm_resp resp;
int ret;
if (usage != QSEOS_KM_USAGE_DISK_ENCRYPTION) {
pr_err("Error:: unsupported usage %d\n", usage);
return -EFAULT;
}
__qseecom_enable_clk(CLK_QSEE);
if (qseecom.qsee.instance != qseecom.ce_drv.instance)
__qseecom_enable_clk(CLK_CE_DRV);
memcpy(ireq.key_id, set_key_para->key_id, QSEECOM_KEY_ID_SIZE);
ireq.qsee_command_id = QSEOS_SET_KEY;
ireq.ce = set_key_para->ce_hw;
ireq.pipe = set_key_para->pipe;
ireq.flags = set_key_para->flags;
/* set both PIPE_ENC and PIPE_ENC_XTS*/
ireq.pipe_type = QSEOS_PIPE_ENC|QSEOS_PIPE_ENC_XTS;
if (set_key_para->set_clear_key_flag ==
QSEECOM_SET_CE_KEY_CMD)
memcpy((void *)ireq.hash, (void *)set_key_para->hash32,
QSEECOM_HASH_SIZE);
else
memset((void *)ireq.hash, 0, QSEECOM_HASH_SIZE);
ret = scm_call(SCM_SVC_TZSCHEDULER, 1,
&ireq, sizeof(struct qseecom_key_select_ireq),
&resp, sizeof(struct qseecom_command_scm_resp));
if (ret) {
pr_err("scm call to set QSEOS_PIPE_ENC key failed : %d\n", ret);
__qseecom_disable_clk(CLK_QSEE);
if (qseecom.qsee.instance != qseecom.ce_drv.instance)
__qseecom_disable_clk(CLK_CE_DRV);
return ret;
}
switch (resp.result) {
case QSEOS_RESULT_SUCCESS:
break;
case QSEOS_RESULT_INCOMPLETE:
ret = __qseecom_process_incomplete_cmd(data, &resp);
if (ret)
pr_err("process_incomplete_cmd FAILED, resp.result %d\n",
resp.result);
break;
case QSEOS_RESULT_FAILURE:
default:
pr_err("Set key scm call failed resp.result %d\n", resp.result);
ret = -EINVAL;
break;
}
__qseecom_disable_clk(CLK_QSEE);
if (qseecom.qsee.instance != qseecom.ce_drv.instance)
__qseecom_disable_clk(CLK_CE_DRV);
return ret;
}
static int qseecom_create_key(struct qseecom_dev_handle *data,
void __user *argp)
{
uint32_t ce_hw = 0;
uint32_t pipe = 0;
uint8_t key_id[QSEECOM_KEY_ID_SIZE] = {0};
int ret = 0;
uint32_t flags = 0;
struct qseecom_set_key_parameter set_key_para;
struct qseecom_create_key_req create_key_req;
ret = copy_from_user(&create_key_req, argp, sizeof(create_key_req));
if (ret) {
pr_err("copy_from_user failed\n");
return ret;
}
if (create_key_req.usage != QSEOS_KM_USAGE_DISK_ENCRYPTION) {
pr_err("Error:: unsupported usage %d\n", create_key_req.usage);
return -EFAULT;
}
ret = __qseecom_get_ce_pipe_info(create_key_req.usage, &pipe, &ce_hw);
if (ret) {
pr_err("Failed to retrieve pipe/ce_hw info: %d\n", ret);
return -EINVAL;
}
ret = __qseecom_generate_and_save_key(data, create_key_req.usage,
key_id, flags);
if (ret) {
pr_err("Failed to generate key on storage: %d\n", ret);
return -EFAULT;
}
set_key_para.ce_hw = ce_hw;
set_key_para.pipe = pipe;
memcpy(set_key_para.key_id, key_id, QSEECOM_KEY_ID_SIZE);
set_key_para.flags = flags;
set_key_para.set_clear_key_flag = QSEECOM_SET_CE_KEY_CMD;
memcpy((void *)set_key_para.hash32, (void *)create_key_req.hash32,
QSEECOM_HASH_SIZE);
ret = __qseecom_set_clear_ce_key(data, create_key_req.usage,
&set_key_para);
if (ret) {
pr_err("Failed to create key: pipe %d, ce %d: %d\n",
pipe, ce_hw, ret);
return -EFAULT;
}
return ret;
}
static int qseecom_wipe_key(struct qseecom_dev_handle *data,
void __user *argp)
{
uint32_t ce_hw = 0;
uint32_t pipe = 0;
uint8_t key_id[QSEECOM_KEY_ID_SIZE] = {0};
int ret = 0;
uint32_t flags = 0;
int i;
struct qseecom_wipe_key_req wipe_key_req;
struct qseecom_set_key_parameter clear_key_para;
ret = copy_from_user(&wipe_key_req, argp, sizeof(wipe_key_req));
if (ret) {
pr_err("copy_from_user failed\n");
return ret;
}
if (wipe_key_req.usage != QSEOS_KM_USAGE_DISK_ENCRYPTION) {
pr_err("Error:: unsupported usage %d\n", wipe_key_req.usage);
return -EFAULT;
}
ret = __qseecom_get_ce_pipe_info(wipe_key_req.usage, &pipe, &ce_hw);
if (ret) {
pr_err("Failed to retrieve pipe/ce_hw info: %d\n", ret);
return -EINVAL;
}
ret = __qseecom_delete_saved_key(data, wipe_key_req.usage, key_id,
flags);
if (ret) {
pr_err("Failed to delete key from ssd storage: %d\n", ret);
return -EFAULT;
}
/* an invalid key_id 0xff is used to indicate clear key*/
for (i = 0; i < QSEECOM_KEY_ID_SIZE; i++)
clear_key_para.key_id[i] = 0xff;
clear_key_para.ce_hw = ce_hw;
clear_key_para.pipe = pipe;
clear_key_para.flags = flags;
clear_key_para.set_clear_key_flag = QSEECOM_CLEAR_CE_KEY_CMD;
ret = __qseecom_set_clear_ce_key(data, wipe_key_req.usage,
&clear_key_para);
if (ret) {
pr_err("Failed to wipe key: pipe %d, ce %d: %d\n",
pipe, ce_hw, ret);
return -EFAULT;
}
return ret;
}
static int qseecom_is_es_activated(void __user *argp)
{
struct qseecom_is_es_activated_req req;
int ret;
int resp_buf;
if (qseecom.qsee_version < QSEE_VERSION_04) {
pr_err("invalid qsee version");
return -ENODEV;
}
if (argp == NULL) {
pr_err("arg is null");
return -EINVAL;
}
ret = scm_call(SCM_SVC_ES, SCM_IS_ACTIVATED_ID, NULL, 0,
(void *) &resp_buf, sizeof(resp_buf));
if (ret) {
pr_err("scm_call failed");
return ret;
}
req.is_activated = resp_buf;
ret = copy_to_user(argp, &req, sizeof(req));
if (ret) {
pr_err("copy_to_user failed");
return ret;
}
return 0;
}
static int qseecom_save_partition_hash(void __user *argp)
{
struct qseecom_save_partition_hash_req req;
int ret;
if (qseecom.qsee_version < QSEE_VERSION_04) {
pr_err("invalid qsee version ");
return -ENODEV;
}
if (argp == NULL) {
pr_err("arg is null");
return -EINVAL;
}
ret = copy_from_user(&req, argp, sizeof(req));
if (ret) {
pr_err("copy_from_user failed");
return ret;
}
ret = scm_call(SCM_SVC_ES, SCM_SAVE_PARTITION_HASH_ID,
(void *) &req, sizeof(req), NULL, 0);
if (ret) {
pr_err("scm_call failed");
return ret;
}
return 0;
}
static long qseecom_ioctl(struct file *file, unsigned cmd,
unsigned long arg)
{
int ret = 0;
struct qseecom_dev_handle *data = file->private_data;
void __user *argp = (void __user *) arg;
if (data->abort) {
pr_err("Aborting qseecom driver\n");
return -ENODEV;
}
switch (cmd) {
case QSEECOM_IOCTL_REGISTER_LISTENER_REQ: {
pr_debug("ioctl register_listener_req()\n");
atomic_inc(&data->ioctl_count);
ret = qseecom_register_listener(data, argp);
atomic_dec(&data->ioctl_count);
wake_up_all(&data->abort_wq);
if (ret)
pr_err("failed qseecom_register_listener: %d\n", ret);
break;
}
case QSEECOM_IOCTL_UNREGISTER_LISTENER_REQ: {
pr_debug("ioctl unregister_listener_req()\n");
atomic_inc(&data->ioctl_count);
ret = qseecom_unregister_listener(data);
atomic_dec(&data->ioctl_count);
wake_up_all(&data->abort_wq);
if (ret)
pr_err("failed qseecom_unregister_listener: %d\n", ret);
break;
}
case QSEECOM_IOCTL_SEND_CMD_REQ: {
/* Only one client allowed here at a time */
mutex_lock(&app_access_lock);
atomic_inc(&data->ioctl_count);
ret = qseecom_send_cmd(data, argp);
atomic_dec(&data->ioctl_count);
wake_up_all(&data->abort_wq);
mutex_unlock(&app_access_lock);
if (ret)
pr_err("failed qseecom_send_cmd: %d\n", ret);
break;
}
case QSEECOM_IOCTL_SEND_MODFD_CMD_REQ: {
/* Only one client allowed here at a time */
mutex_lock(&app_access_lock);
atomic_inc(&data->ioctl_count);
ret = qseecom_send_modfd_cmd(data, argp);
atomic_dec(&data->ioctl_count);
wake_up_all(&data->abort_wq);
mutex_unlock(&app_access_lock);
if (ret)
pr_err("failed qseecom_send_cmd: %d\n", ret);
break;
}
case QSEECOM_IOCTL_RECEIVE_REQ: {
atomic_inc(&data->ioctl_count);
ret = qseecom_receive_req(data);
atomic_dec(&data->ioctl_count);
wake_up_all(&data->abort_wq);
if (ret)
pr_err("failed qseecom_receive_req: %d\n", ret);
break;
}
case QSEECOM_IOCTL_SEND_RESP_REQ: {
atomic_inc(&data->ioctl_count);
ret = qseecom_send_resp();
atomic_dec(&data->ioctl_count);
wake_up_all(&data->abort_wq);
if (ret)
pr_err("failed qseecom_send_resp: %d\n", ret);
break;
}
case QSEECOM_IOCTL_SET_MEM_PARAM_REQ: {
ret = qseecom_set_client_mem_param(data, argp);
if (ret)
pr_err("failed Qqseecom_set_mem_param request: %d\n",
ret);
break;
}
case QSEECOM_IOCTL_LOAD_APP_REQ: {
mutex_lock(&app_access_lock);
atomic_inc(&data->ioctl_count);
if (qseecom.qsee_version > QSEEE_VERSION_00) {
if (qseecom.commonlib_loaded == false) {
ret = qseecom_load_commonlib_image(data);
if (ret == 0)
qseecom.commonlib_loaded = true;
}
}
if (ret == 0)
ret = qseecom_load_app(data, argp);
atomic_dec(&data->ioctl_count);
mutex_unlock(&app_access_lock);
if (ret)
pr_err("failed load_app request: %d\n", ret);
break;
}
case QSEECOM_IOCTL_UNLOAD_APP_REQ: {
mutex_lock(&app_access_lock);
atomic_inc(&data->ioctl_count);
ret = qseecom_unload_app(data);
atomic_dec(&data->ioctl_count);
mutex_unlock(&app_access_lock);
if (ret)
pr_err("failed unload_app request: %d\n", ret);
break;
}
case QSEECOM_IOCTL_GET_QSEOS_VERSION_REQ: {
atomic_inc(&data->ioctl_count);
ret = qseecom_get_qseos_version(data, argp);
if (ret)
pr_err("qseecom_get_qseos_version: %d\n", ret);
atomic_dec(&data->ioctl_count);
break;
}
case QSEECOM_IOCTL_PERF_ENABLE_REQ:{
atomic_inc(&data->ioctl_count);
ret = qsee_vote_for_clock(data, CLK_DFAB);
if (ret)
pr_err("Failed to vote for DFAB clock%d\n", ret);
ret = qsee_vote_for_clock(data, CLK_SFPB);
if (ret)
pr_err("Failed to vote for SFPB clock%d\n", ret);
atomic_dec(&data->ioctl_count);
break;
}
case QSEECOM_IOCTL_PERF_DISABLE_REQ:{
atomic_inc(&data->ioctl_count);
qsee_disable_clock_vote(data, CLK_DFAB);
qsee_disable_clock_vote(data, CLK_SFPB);
atomic_dec(&data->ioctl_count);
break;
}
case QSEECOM_IOCTL_LOAD_EXTERNAL_ELF_REQ: {
data->released = true;
mutex_lock(&app_access_lock);
atomic_inc(&data->ioctl_count);
ret = qseecom_load_external_elf(data, argp);
atomic_dec(&data->ioctl_count);
mutex_unlock(&app_access_lock);
if (ret)
pr_err("failed load_external_elf request: %d\n", ret);
break;
}
case QSEECOM_IOCTL_UNLOAD_EXTERNAL_ELF_REQ: {
data->released = true;
mutex_lock(&app_access_lock);
atomic_inc(&data->ioctl_count);
ret = qseecom_unload_external_elf(data);
atomic_dec(&data->ioctl_count);
mutex_unlock(&app_access_lock);
if (ret)
pr_err("failed unload_app request: %d\n", ret);
break;
}
case QSEECOM_IOCTL_APP_LOADED_QUERY_REQ: {
mutex_lock(&app_access_lock);
atomic_inc(&data->ioctl_count);
ret = qseecom_query_app_loaded(data, argp);
atomic_dec(&data->ioctl_count);
mutex_unlock(&app_access_lock);
break;
}
case QSEECOM_IOCTL_SEND_CMD_SERVICE_REQ: {
if (qseecom.qsee_version < QSEE_VERSION_03) {
pr_err("SEND_CMD_SERVICE_REQ: Invalid qsee version %u\n",
qseecom.qsee_version);
return -EINVAL;
}
mutex_lock(&app_access_lock);
atomic_inc(&data->ioctl_count);
ret = qseecom_send_service_cmd(data, argp);
atomic_dec(&data->ioctl_count);
mutex_unlock(&app_access_lock);
break;
}
case QSEECOM_IOCTL_CREATE_KEY_REQ: {
if (qseecom.qsee_version < QSEE_VERSION_05) {
pr_err("Create Key feature not supported in qsee version %u\n",
qseecom.qsee_version);
return -EINVAL;
}
data->released = true;
mutex_lock(&app_access_lock);
atomic_inc(&data->ioctl_count);
ret = qseecom_create_key(data, argp);
if (ret)
pr_err("failed to create encryption key: %d\n", ret);
atomic_dec(&data->ioctl_count);
mutex_unlock(&app_access_lock);
break;
}
case QSEECOM_IOCTL_WIPE_KEY_REQ: {
if (qseecom.qsee_version < QSEE_VERSION_05) {
pr_err("Wipe Key feature not supported in qsee version %u\n",
qseecom.qsee_version);
return -EINVAL;
}
data->released = true;
mutex_lock(&app_access_lock);
atomic_inc(&data->ioctl_count);
ret = qseecom_wipe_key(data, argp);
if (ret)
pr_err("failed to wipe encryption key: %d\n", ret);
atomic_dec(&data->ioctl_count);
mutex_unlock(&app_access_lock);
break;
}
case QSEECOM_IOCTL_SAVE_PARTITION_HASH_REQ: {
data->released = true;
mutex_lock(&app_access_lock);
atomic_inc(&data->ioctl_count);
ret = qseecom_save_partition_hash(argp);
atomic_dec(&data->ioctl_count);
mutex_unlock(&app_access_lock);
break;
}
case QSEECOM_IOCTL_IS_ES_ACTIVATED_REQ: {
data->released = true;
mutex_lock(&app_access_lock);
atomic_inc(&data->ioctl_count);
ret = qseecom_is_es_activated(argp);
atomic_dec(&data->ioctl_count);
mutex_unlock(&app_access_lock);
break;
}
default:
return -EINVAL;
}
return ret;
}
static int qseecom_open(struct inode *inode, struct file *file)
{
int ret = 0;
struct qseecom_dev_handle *data;
data = kzalloc(sizeof(*data), GFP_KERNEL);
if (!data) {
pr_err("kmalloc failed\n");
return -ENOMEM;
}
file->private_data = data;
data->abort = 0;
data->type = QSEECOM_GENERIC;
data->released = false;
init_waitqueue_head(&data->abort_wq);
atomic_set(&data->ioctl_count, 0);
return ret;
}
static int qseecom_release(struct inode *inode, struct file *file)
{
struct qseecom_dev_handle *data = file->private_data;
int ret = 0;
if (data->released == false) {
pr_warn("data->released == false\n");
switch (data->type) {
case QSEECOM_LISTENER_SERVICE:
ret = qseecom_unregister_listener(data);
break;
case QSEECOM_CLIENT_APP:
ret = qseecom_unload_app(data);
break;
case QSEECOM_SECURE_SERVICE:
case QSEECOM_GENERIC:
ret = qseecom_unmap_ion_allocated_memory(data);
if (ret) {
pr_err("Close failed\n");
return ret;
}
break;
default:
pr_err("Unsupported clnt_handle_type %d",
data->type);
break;
}
}
if (data->fast_load_enabled == true)
qsee_disable_clock_vote(data, CLK_SFPB);
if (data->perf_enabled == true)
qsee_disable_clock_vote(data, CLK_DFAB);
kfree(data);
return ret;
}
static const struct file_operations qseecom_fops = {
.owner = THIS_MODULE,
.unlocked_ioctl = qseecom_ioctl,
.open = qseecom_open,
.release = qseecom_release
};
static int __qseecom_init_clk(enum qseecom_ce_hw_instance ce)
{
int rc = 0;
struct device *pdev;
struct qseecom_clk *qclk;
char *core_clk_src = NULL;
char *core_clk = NULL;
char *iface_clk = NULL;
char *bus_clk = NULL;
switch (ce) {
case CLK_QSEE: {
core_clk_src = "core_clk_src";
core_clk = "core_clk";
iface_clk = "iface_clk";
bus_clk = "bus_clk";
qclk = &qseecom.qsee;
qclk->instance = CLK_QSEE;
break;
};
case CLK_CE_DRV: {
core_clk_src = "ce_drv_core_clk_src";
core_clk = "ce_drv_core_clk";
iface_clk = "ce_drv_iface_clk";
bus_clk = "ce_drv_bus_clk";
qclk = &qseecom.ce_drv;
qclk->instance = CLK_CE_DRV;
break;
};
default:
pr_err("Invalid ce hw instance: %d!\n", ce);
return -EIO;
}
pdev = qseecom.pdev;
/* Get CE3 src core clk. */
qclk->ce_core_src_clk = clk_get(pdev, core_clk_src);
if (!IS_ERR(qclk->ce_core_src_clk)) {
/* Set the core src clk @100Mhz */
rc = clk_set_rate(qclk->ce_core_src_clk, QSEE_CE_CLK_100MHZ);
if (rc) {
clk_put(qclk->ce_core_src_clk);
pr_err("Unable to set the core src clk @100Mhz.\n");
return -EIO;
}
} else {
pr_warn("Unable to get CE core src clk, set to NULL\n");
qclk->ce_core_src_clk = NULL;
}
/* Get CE core clk */
qclk->ce_core_clk = clk_get(pdev, core_clk);
if (IS_ERR(qclk->ce_core_clk)) {
rc = PTR_ERR(qclk->ce_core_clk);
pr_err("Unable to get CE core clk\n");
if (qclk->ce_core_src_clk != NULL)
clk_put(qclk->ce_core_src_clk);
return -EIO;
}
/* Get CE Interface clk */
qclk->ce_clk = clk_get(pdev, iface_clk);
if (IS_ERR(qclk->ce_clk)) {
rc = PTR_ERR(qclk->ce_clk);
pr_err("Unable to get CE interface clk\n");
if (qclk->ce_core_src_clk != NULL)
clk_put(qclk->ce_core_src_clk);
clk_put(qclk->ce_core_clk);
return -EIO;
}
/* Get CE AXI clk */
qclk->ce_bus_clk = clk_get(pdev, bus_clk);
if (IS_ERR(qclk->ce_bus_clk)) {
rc = PTR_ERR(qclk->ce_bus_clk);
pr_err("Unable to get CE BUS interface clk\n");
if (qclk->ce_core_src_clk != NULL)
clk_put(qclk->ce_core_src_clk);
clk_put(qclk->ce_core_clk);
clk_put(qclk->ce_clk);
return -EIO;
}
return rc;
}
static void __qseecom_deinit_clk(enum qseecom_ce_hw_instance ce)
{
struct qseecom_clk *qclk;
if (ce == CLK_QSEE)
qclk = &qseecom.qsee;
else
qclk = &qseecom.ce_drv;
if (qclk->ce_clk != NULL) {
clk_put(qclk->ce_clk);
qclk->ce_clk = NULL;
}
if (qclk->ce_core_clk != NULL) {
clk_put(qclk->ce_core_clk);
qclk->ce_clk = NULL;
}
if (qclk->ce_bus_clk != NULL) {
clk_put(qclk->ce_bus_clk);
qclk->ce_clk = NULL;
}
if (qclk->ce_core_src_clk != NULL) {
clk_put(qclk->ce_core_src_clk);
qclk->ce_core_src_clk = NULL;
}
}
static int __devinit qseecom_probe(struct platform_device *pdev)
{
int rc;
int ret = 0;
struct device *class_dev;
char qsee_not_legacy = 0;
struct msm_bus_scale_pdata *qseecom_platform_support = NULL;
uint32_t system_call_id = QSEOS_CHECK_VERSION_CMD;
qseecom.qsee_bw_count = 0;
qseecom.qsee_perf_client = 0;
qseecom.qsee_sfpb_bw_count = 0;
qseecom.qsee.ce_core_clk = NULL;
qseecom.qsee.ce_clk = NULL;
qseecom.qsee.ce_core_src_clk = NULL;
qseecom.qsee.ce_bus_clk = NULL;
qseecom.ce_drv.ce_core_clk = NULL;
qseecom.ce_drv.ce_clk = NULL;
qseecom.ce_drv.ce_core_src_clk = NULL;
qseecom.ce_drv.ce_bus_clk = NULL;
rc = alloc_chrdev_region(&qseecom_device_no, 0, 1, QSEECOM_DEV);
if (rc < 0) {
pr_err("alloc_chrdev_region failed %d\n", rc);
return rc;
}
driver_class = class_create(THIS_MODULE, QSEECOM_DEV);
if (IS_ERR(driver_class)) {
rc = -ENOMEM;
pr_err("class_create failed %d\n", rc);
goto unregister_chrdev_region;
}
class_dev = device_create(driver_class, NULL, qseecom_device_no, NULL,
QSEECOM_DEV);
if (!class_dev) {
pr_err("class_device_create failed %d\n", rc);
rc = -ENOMEM;
goto class_destroy;
}
cdev_init(&qseecom_cdev, &qseecom_fops);
qseecom_cdev.owner = THIS_MODULE;
rc = cdev_add(&qseecom_cdev, MKDEV(MAJOR(qseecom_device_no), 0), 1);
if (rc < 0) {
pr_err("cdev_add failed %d\n", rc);
goto err;
}
INIT_LIST_HEAD(&qseecom.registered_listener_list_head);
spin_lock_init(&qseecom.registered_listener_list_lock);
INIT_LIST_HEAD(&qseecom.registered_app_list_head);
spin_lock_init(&qseecom.registered_app_list_lock);
INIT_LIST_HEAD(&qseecom.registered_kclient_list_head);
spin_lock_init(&qseecom.registered_kclient_list_lock);
init_waitqueue_head(&qseecom.send_resp_wq);
qseecom.send_resp_flag = 0;
rc = scm_call(6, 1, &system_call_id, sizeof(system_call_id),
&qsee_not_legacy, sizeof(qsee_not_legacy));
if (rc) {
pr_err("Failed to retrieve QSEOS version information %d\n", rc);
goto err;
}
if (qsee_not_legacy) {
uint32_t feature = 10;
qseecom.qsee_version = QSEEE_VERSION_00;
rc = scm_call(6, 3, &feature, sizeof(feature),
&qseecom.qsee_version, sizeof(qseecom.qsee_version));
if (rc) {
pr_err("Failed to get QSEE version info %d\n", rc);
goto err;
}
qseecom.qseos_version = QSEOS_VERSION_14;
} else {
qseecom.qseos_version = QSEOS_VERSION_13;
qseecom.qsee_version = 0;
pil = NULL;
pil_ref_cnt = 0;
}
qseecom.commonlib_loaded = false;
qseecom.pdev = class_dev;
/* Create ION msm client */
qseecom.ion_clnt = msm_ion_client_create(-1, "qseecom-kernel");
if (qseecom.ion_clnt == NULL) {
pr_err("Ion client cannot be created\n");
rc = -ENOMEM;
goto err;
}
/* register client for bus scaling */
if (pdev->dev.of_node) {
if (of_property_read_u32((&pdev->dev)->of_node,
"qcom,disk-encrypt-pipe-pair",
&qseecom.ce_info.disk_encrypt_pipe)) {
pr_err("Fail to get disk-encrypt pipe pair information.\n");
qseecom.ce_info.disk_encrypt_pipe = 0xff;
rc = -EINVAL;
goto err;
} else {
pr_warn("bam_pipe_pair=0x%x",
qseecom.ce_info.disk_encrypt_pipe);
}
if (of_property_read_u32((&pdev->dev)->of_node,
"qcom,qsee-ce-hw-instance",
&qseecom.ce_info.qsee_ce_hw_instance)) {
pr_err("Fail to get qsee ce hw instance information.\n");
qseecom.ce_info.qsee_ce_hw_instance = 0xff;
rc = -EINVAL;
goto err;
} else {
pr_warn("qsee-ce-hw-instance=0x%x",
qseecom.ce_info.qsee_ce_hw_instance);
}
if (of_property_read_u32((&pdev->dev)->of_node,
"qcom,hlos-ce-hw-instance",
&qseecom.ce_info.hlos_ce_hw_instance)) {
pr_err("Fail to get hlos ce hw instance information.\n");
qseecom.ce_info.hlos_ce_hw_instance = 0xff;
rc = -EINVAL;
goto err;
} else {
pr_warn("hlos-ce-hw-instance=0x%x",
qseecom.ce_info.hlos_ce_hw_instance);
}
qseecom.qsee.instance = qseecom.ce_info.qsee_ce_hw_instance;
qseecom.ce_drv.instance = qseecom.ce_info.hlos_ce_hw_instance;
ret = __qseecom_init_clk(CLK_QSEE);
if (ret)
goto err;
if (qseecom.qsee.instance != qseecom.ce_drv.instance) {
ret = __qseecom_init_clk(CLK_CE_DRV);
if (ret) {
__qseecom_deinit_clk(CLK_QSEE);
goto err;
}
} else {
struct qseecom_clk *qclk;
qclk = &qseecom.qsee;
qseecom.ce_drv.ce_core_clk = qclk->ce_core_clk;
qseecom.ce_drv.ce_clk = qclk->ce_clk;
qseecom.ce_drv.ce_core_src_clk = qclk->ce_core_src_clk;
qseecom.ce_drv.ce_bus_clk = qclk->ce_bus_clk;
}
qseecom_platform_support = (struct msm_bus_scale_pdata *)
msm_bus_cl_get_pdata(pdev);
if (qseecom.qsee_version >= (QSEE_VERSION_02)) {
struct resource *resource = NULL;
struct qsee_apps_region_info_ireq req;
struct qseecom_command_scm_resp resp;
resource = platform_get_resource_byname(pdev,
IORESOURCE_MEM, "secapp-region");
if (resource) {
req.qsee_cmd_id = QSEOS_APP_REGION_NOTIFICATION;
req.addr = resource->start;
req.size = resource_size(resource);
pr_warn("secure app region addr=0x%x size=0x%x",
req.addr, req.size);
} else {
pr_err("Fail to get secure app region info\n");
rc = -EINVAL;
goto err;
}
rc = scm_call(SCM_SVC_TZSCHEDULER, 1, &req, sizeof(req),
&resp, sizeof(resp));
if (rc) {
pr_err("Failed to send secapp region info %d\n",
rc);
goto err;
}
}
} else {
qseecom_platform_support = (struct msm_bus_scale_pdata *)
pdev->dev.platform_data;
}
qseecom.qsee_perf_client = msm_bus_scale_register_client(
qseecom_platform_support);
if (!qseecom.qsee_perf_client)
pr_err("Unable to register bus client\n");
return 0;
err:
device_destroy(driver_class, qseecom_device_no);
class_destroy:
class_destroy(driver_class);
unregister_chrdev_region:
unregister_chrdev_region(qseecom_device_no, 1);
return rc;
}
static int __devinit qseecom_remove(struct platform_device *pdev)
{
struct qseecom_registered_kclient_list *kclient = NULL;
unsigned long flags = 0;
int ret = 0;
if (pdev->dev.platform_data != NULL)
msm_bus_scale_unregister_client(qseecom.qsee_perf_client);
spin_lock_irqsave(&qseecom.registered_kclient_list_lock, flags);
kclient = list_entry((&qseecom.registered_kclient_list_head)->next,
struct qseecom_registered_kclient_list, list);
if (list_empty(&kclient->list)) {
spin_unlock_irqrestore(&qseecom.registered_kclient_list_lock,
flags);
return 0;
}
list_for_each_entry(kclient, &qseecom.registered_kclient_list_head,
list) {
if (kclient)
list_del(&kclient->list);
break;
}
spin_unlock_irqrestore(&qseecom.registered_kclient_list_lock, flags);
while (kclient->handle != NULL) {
ret = qseecom_unload_app(kclient->handle->dev);
if (ret == 0) {
kzfree(kclient->handle->dev);
kzfree(kclient->handle);
kzfree(kclient);
}
spin_lock_irqsave(&qseecom.registered_kclient_list_lock, flags);
kclient = list_entry(
(&qseecom.registered_kclient_list_head)->next,
struct qseecom_registered_kclient_list, list);
if (list_empty(&kclient->list)) {
spin_unlock_irqrestore(
&qseecom.registered_kclient_list_lock, flags);
return 0;
}
list_for_each_entry(kclient,
&qseecom.registered_kclient_list_head, list) {
if (kclient)
list_del(&kclient->list);
break;
}
spin_unlock_irqrestore(&qseecom.registered_kclient_list_lock,
flags);
if (!kclient) {
ret = 0;
break;
}
}
if (qseecom.qseos_version > QSEEE_VERSION_00)
qseecom_unload_commonlib_image();
if (qseecom.qsee_perf_client)
msm_bus_scale_client_update_request(qseecom.qsee_perf_client,
0);
/* register client for bus scaling */
if (pdev->dev.of_node) {
__qseecom_deinit_clk(CLK_QSEE);
if (qseecom.qsee.instance != qseecom.ce_drv.instance)
__qseecom_deinit_clk(CLK_CE_DRV);
}
return ret;
};
static struct of_device_id qseecom_match[] = {
{
.compatible = "qcom,qseecom",
},
{}
};
static struct platform_driver qseecom_plat_driver = {
.probe = qseecom_probe,
.remove = qseecom_remove,
.driver = {
.name = "qseecom",
.owner = THIS_MODULE,
.of_match_table = qseecom_match,
},
};
static int __devinit qseecom_init(void)
{
return platform_driver_register(&qseecom_plat_driver);
}
static void __devexit qseecom_exit(void)
{
device_destroy(driver_class, qseecom_device_no);
class_destroy(driver_class);
unregister_chrdev_region(qseecom_device_no, 1);
ion_client_destroy(qseecom.ion_clnt);
}
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("Qualcomm Secure Execution Environment Communicator");
module_init(qseecom_init);
module_exit(qseecom_exit);