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lineage_android_kernel_samsung_jf
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qseecom: Add support to handle multiple app load & unload 

Media server is associated with multiple apps on TZ-side.
Unloading a single app for clean up is not enought. QSEECOM
needs to handle the app load & unload of multiple apps
associated with the client. During app_load & app_unload
along with app_id, app_name should also be checked. Besides,
keymaster will not be unloaded.

Change-Id: Iea53362a21e359e54e40a0a93688a05264cfde5c
Signed-off-by: Hariprasad Dhalinarasimha <hnamgund@codeaurora.org>
Signed-off-by: Zhen Kong <zkong@codeaurora.org>
This commit is contained in:
Zhen Kong 2014-05-09 18:27:53 -07:00 committed by Gerrit - the friendly Code Review server
parent 03e523358a
commit 0ae872ae04
1 changed files with 101 additions and 34 deletions
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135
drivers/misc/qseecom.c
View File

@ -176,6 +176,7 @@ struct qseecom_registered_app_list {
struct list_head list;
u32 app_id;
u32 ref_cnt;
char app_name[MAX_APP_NAME_SIZE];
};
struct qseecom_registered_kclient_list {
@ -201,7 +202,6 @@ struct qseecom_control {
struct device *pdev;
struct cdev cdev;
bool uclient_shutdown_app;
};
struct qseecom_client_handle {
@ -211,6 +211,7 @@ struct qseecom_client_handle {
uint32_t user_virt_sb_base;
size_t sb_length;
struct ion_handle *ihandle; /* Retrieve phy addr */
char app_name[MAX_APP_NAME_SIZE];
};
struct qseecom_listener_handle {
@ -795,7 +796,9 @@ static int qseecom_load_app(struct qseecom_dev_handle *data, void __user *argp)
}
entry->app_id = app_id;
entry->ref_cnt = 1;
memset((void *)entry->app_name, 0, MAX_APP_NAME_SIZE);
memcpy((void *)entry->app_name,
(void *)load_img_req.img_name, MAX_APP_NAME_SIZE);
/* Deallocate the handle */
if (!IS_ERR_OR_NULL(ihandle))
ion_free(qseecom.ion_clnt, ihandle);
@ -809,6 +812,9 @@ static int qseecom_load_app(struct qseecom_dev_handle *data, void __user *argp)
(char *)(load_img_req.img_name));
}
data->client.app_id = app_id;
memset((void *)data->client.app_name, 0, MAX_APP_NAME_SIZE);
memcpy((void *)data->client.app_name,
(void *)load_img_req.img_name, MAX_APP_NAME_SIZE);
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");
@ -847,58 +853,64 @@ static int qseecom_unmap_ion_allocated_memory(struct qseecom_dev_handle *data)
}
static int qseecom_unload_app(struct qseecom_dev_handle *data,
bool uclient_release)
bool app_crash)
{
unsigned long flags;
unsigned long flags1;
int ret = 0;
struct qseecom_command_scm_resp resp;
struct qseecom_registered_app_list *ptr_app;
struct qseecom_registered_app_list *ptr_app = NULL;
bool unload = false;
bool found_app = false;
bool found_dead_app = false;
if ((qseecom.qseos_version == QSEOS_VERSION_14) &&
(data->client.app_id > 0)) {
if (!memcmp(data->client.app_name, "keymaste", strlen("keymaste"))) {
pr_warn("Do not unload keymaster app from tz\n");
return 0;
}
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 ((uclient_release) &&
(!qseecom.uclient_shutdown_app)) {
ptr_app->ref_cnt = 0;
unload = true;
break;
} else {
if (ptr_app->ref_cnt == 1) {
if (!memcmp((void *)ptr_app->app_name,
(void *)data->client.app_name,
strlen(data->client.app_name))) {
found_app = true;
if (app_crash) {
unload = true;
break;
} else {
ptr_app->ref_cnt--;
pr_debug("Can't unload app(%d) inuse\n",
ptr_app->app_id);
break;
if (ptr_app->ref_cnt == 1) {
unload = true;
break;
}
}
} else {
found_dead_app = true;
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);
flags);
if (found_app == false && found_dead_app == false) {
pr_err("Cannot find app with id = %d (%s)\n",
data->client.app_id,
(char *)data->client.app_name);
return -EINVAL;
}
}
if ((unload) && (qseecom.qseos_version == QSEOS_VERSION_14)) {
struct qseecom_unload_app_ireq req;
if (found_dead_app) {
pr_warn("cleanup dead app: app_id %d(%s)\n", data->client.app_id,
(char *)data->client.app_name);
__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);
}
if (unload) {
struct qseecom_unload_app_ireq req;
/* 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;
@ -909,11 +921,20 @@ static int qseecom_unload_app(struct qseecom_dev_handle *data,
&resp, sizeof(resp));
if (ret) {
pr_err("scm_call to unload app (id = %d) failed\n",
req.app_id);
req.app_id);
return -EFAULT;
} else {
pr_warn("App id %d now unloaded\n", req.app_id);
}
if (resp.result == QSEOS_RESULT_FAILURE) {
pr_err("app (%d) unload_failed!!\n",
data->client.app_id);
return -EFAULT;
}
if (resp.result == QSEOS_RESULT_SUCCESS)
pr_info("App (%d) is unloaded!!\n",
data->client.app_id);
__qseecom_cleanup_app(data);
if (resp.result == QSEOS_RESULT_INCOMPLETE) {
ret = __qseecom_process_incomplete_cmd(data, &resp);
if (ret) {
@ -936,6 +957,28 @@ static int qseecom_unload_app(struct qseecom_dev_handle *data,
}
}
}
if (found_app) {
spin_lock_irqsave(&qseecom.registered_app_list_lock, flags1);
if (app_crash) {
ptr_app->ref_cnt = 0;
pr_debug("app_crash: ref_count = 0\n");
} else {
if (ptr_app->ref_cnt == 1) {
ptr_app->ref_cnt = 0;
pr_info("ref_count set to 0\n");
} else {
ptr_app->ref_cnt--;
pr_info("Can't unload app(%d) inuse\n",
ptr_app->app_id);
}
}
if (unload) {
list_del(&ptr_app->list);
kzfree(ptr_app);
}
spin_unlock_irqrestore(&qseecom.registered_app_list_lock,
flags1);
}
qseecom_unmap_ion_allocated_memory(data);
data->released = true;
return ret;
@ -1116,9 +1159,32 @@ static int __qseecom_send_cmd(struct qseecom_dev_handle *data,
u32 reqd_len_sb_in = 0;
struct qseecom_client_send_data_ireq send_data_req;
struct qseecom_command_scm_resp resp;
unsigned long flags;
struct qseecom_registered_app_list *ptr_app;
bool found_app = false;
reqd_len_sb_in = req->cmd_req_len + req->resp_len;
/* find app_id & img_name from list */
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) &&
(!memcmp((void *)ptr_app->app_name,
(void *)data->client.app_name,
strlen(data->client.app_name)))) {
found_app = true;
break;
}
}
spin_unlock_irqrestore(&qseecom.registered_app_list_lock, flags);
if (!found_app) {
pr_err("app_id %d (%s) is not found\n", data->client.app_id,
(char *)data->client.app_name);
return -EINVAL;
}
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,
@ -2084,7 +2150,9 @@ static int qseecom_query_app_loaded(struct qseecom_dev_handle *data,
&qseecom.registered_app_list_lock, flags);
data->client.app_id = ret;
query_req.app_id = ret;
memset((void *)data->client.app_name, 0, MAX_APP_NAME_SIZE);
memcpy((void *)data->client.app_name,
(void *)query_req.app_name, MAX_APP_NAME_SIZE);
if (copy_to_user(argp, &query_req, sizeof(query_req))) {
pr_err("copy_to_user failed\n");
return -EFAULT;
@ -2196,7 +2264,6 @@ static long qseecom_ioctl(struct file *file, unsigned cmd,
pr_debug("UNLOAD_APP: qseecom_addr = 0x%x\n", (u32)data);
mutex_lock(&app_access_lock);
atomic_inc(&data->ioctl_count);
qseecom.uclient_shutdown_app = true;
ret = qseecom_unload_app(data, false);
atomic_dec(&data->ioctl_count);
mutex_unlock(&app_access_lock);
@ -2293,6 +2360,7 @@ static int qseecom_open(struct inode *inode, struct file *file)
data->abort = 0;
data->type = QSEECOM_GENERIC;
data->released = false;
memset((void *)data->client.app_name, 0, MAX_APP_NAME_SIZE);
init_waitqueue_head(&data->abort_wq);
atomic_set(&data->ioctl_count, 0);
if (qseecom.qseos_version == QSEOS_VERSION_13) {
@ -2349,7 +2417,6 @@ static int qseecom_release(struct inode *inode, struct file *file)
kfree(data);
return ret;
}
qseecom.uclient_shutdown_app = false;
}
if (qseecom.qseos_version == QSEOS_VERSION_13) {
mutex_lock(&pil_access_lock);