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Diffstat (limited to 'security/tlk_driver/ote_device.c')
-rw-r--r--security/tlk_driver/ote_device.c298
1 files changed, 298 insertions, 0 deletions
diff --git a/security/tlk_driver/ote_device.c b/security/tlk_driver/ote_device.c
index 03fa1acc2129..170f46c06e14 100644
--- a/security/tlk_driver/ote_device.c
+++ b/security/tlk_driver/ote_device.c
@@ -41,6 +41,7 @@ static int te_create_free_cmd_list(struct tlk_device *dev)
{
int cmd_desc_count, ret = 0;
struct te_cmd_req_desc *req_desc;
+ struct te_cmd_req_desc_compat *req_desc_compat;
int bitmap_size;
bool use_reqbuf;
@@ -80,6 +81,12 @@ static int te_create_free_cmd_list(struct tlk_device *dev)
goto error;
}
+ /* requests in the first page, params in the second */
+ dev->req_addr_compat = (struct te_request_compat *)
+ dev->req_param_buf;
+ dev->param_addr_compat = (struct te_oper_param_compat *)
+ (dev->req_param_buf + PAGE_SIZE);
+
/* alloc param bitmap allocator */
bitmap_size = BITS_TO_LONGS(TE_PARAM_MAX) * sizeof(long);
dev->param_bitmap = kzalloc(bitmap_size, GFP_KERNEL);
@@ -99,6 +106,25 @@ static int te_create_free_cmd_list(struct tlk_device *dev)
/* Add the cmd param descriptor to free list */
list_add_tail(&req_desc->list, &(dev->free_cmd_list));
}
+
+ for (cmd_desc_count = 0;
+ cmd_desc_count < TE_CMD_DESC_MAX_COMPAT; cmd_desc_count++) {
+
+ req_desc_compat = kzalloc(sizeof(struct te_cmd_req_desc_compat),
+ GFP_KERNEL);
+ if (req_desc_compat == NULL) {
+ pr_err("Failed to allocate cmd req descriptor\n");
+ ret = -ENOMEM;
+ goto error;
+ }
+ req_desc_compat->req_addr =
+ dev->req_addr_compat + cmd_desc_count;
+ INIT_LIST_HEAD(&(req_desc_compat->list));
+
+ /* Add the cmd param descriptor to free list */
+ list_add_tail(&req_desc_compat->list, &(dev->free_cmd_list));
+ }
+
error:
return ret;
}
@@ -129,6 +155,32 @@ static void te_put_free_params(struct tlk_device *dev,
bitmap_release_region(dev->param_bitmap, idx, nbits);
}
+static struct te_oper_param_compat *
+ te_get_free_params_compat(struct tlk_device *dev, unsigned int nparams)
+{
+ struct te_oper_param_compat *params = NULL;
+ int idx, nbits;
+
+ if (nparams) {
+ nbits = get_count_order(nparams);
+ idx = bitmap_find_free_region(dev->param_bitmap,
+ TE_PARAM_MAX, nbits);
+ if (idx >= 0)
+ params = dev->param_addr_compat + idx;
+ }
+ return params;
+}
+
+static void te_put_free_params_compat(struct tlk_device *dev,
+ struct te_oper_param_compat *params, uint32_t nparams)
+{
+ int idx, nbits;
+
+ idx = (params - dev->param_addr_compat);
+ nbits = get_count_order(nparams);
+ bitmap_release_region(dev->param_bitmap, idx, nbits);
+}
+
static struct te_cmd_req_desc *te_get_free_cmd_desc(struct tlk_device *dev)
{
struct te_cmd_req_desc *cmd_desc = NULL;
@@ -159,6 +211,37 @@ static void te_put_used_cmd_desc(struct tlk_device *dev,
}
}
+static struct te_cmd_req_desc_compat *
+te_get_free_cmd_desc_compat(struct tlk_device *dev)
+{
+ struct te_cmd_req_desc_compat *cmd_desc = NULL;
+
+ if (!(list_empty(&(dev->free_cmd_list)))) {
+ cmd_desc = list_first_entry(&(dev->free_cmd_list),
+ struct te_cmd_req_desc_compat, list);
+ list_del(&(cmd_desc->list));
+ list_add_tail(&cmd_desc->list, &(dev->used_cmd_list));
+ }
+ return cmd_desc;
+}
+
+static void te_put_used_cmd_desc_compat(struct tlk_device *dev,
+ struct te_cmd_req_desc_compat *cmd_desc)
+{
+ struct te_cmd_req_desc_compat *param_desc, *tmp_param_desc;
+
+ if (cmd_desc) {
+ list_for_each_entry_safe(param_desc, tmp_param_desc,
+ &(dev->used_cmd_list), list) {
+ if (cmd_desc->req_addr == param_desc->req_addr) {
+ list_del(&param_desc->list);
+ list_add_tail(&param_desc->list,
+ &(dev->free_cmd_list));
+ }
+ }
+ }
+}
+
static void __attribute__((unused)) te_print_cmd_list(
struct tlk_device *dev, int used_list)
{
@@ -403,6 +486,209 @@ error:
return err;
}
+static int copy_params_from_user_compat(struct te_request_compat *req,
+ struct te_operation_compat *operation)
+{
+ struct te_oper_param_compat *param_array;
+ struct te_oper_param_compat *user_param;
+ uint32_t i;
+
+ if (operation->list_count == 0)
+ return 0;
+
+ param_array = (struct te_oper_param_compat *)(uintptr_t)req->params;
+ if (param_array == NULL) {
+ pr_err("param_array empty\n");
+ return 1;
+ }
+
+ user_param = (struct te_oper_param_compat *)(uintptr_t)
+ operation->list_head;
+ for (i = 0; i < operation->list_count && user_param != NULL; i++) {
+ if (copy_from_user(param_array + i, user_param,
+ sizeof(struct te_oper_param_compat))) {
+ pr_err("Failed to copy operation parameter:%d, %p, " \
+ "list_count: %d\n",
+ i, user_param, operation->list_count);
+ return 1;
+ }
+ user_param = (struct te_oper_param_compat *)(uintptr_t)
+ param_array[i].next_ptr_user;
+ }
+ return 0;
+}
+
+static int copy_params_to_user_compat(struct te_request_compat *req,
+ struct te_operation_compat *operation)
+{
+ struct te_oper_param_compat *param_array;
+ struct te_oper_param_compat *user_param;
+ uint32_t i;
+
+ if (operation->list_count == 0)
+ return 0;
+
+ param_array =
+ (struct te_oper_param_compat *)(uintptr_t)req->params;
+ if (param_array == NULL) {
+ pr_err("param_array empty\n");
+ return 1;
+ }
+
+ user_param =
+ (struct te_oper_param_compat *)(uintptr_t)operation->list_head;
+ for (i = 0; i < req->params_size; i++) {
+ if (copy_to_user(user_param, param_array + i,
+ sizeof(struct te_oper_param_compat))) {
+ pr_err("Failed to copy back parameter:%d %p\n", i,
+ user_param);
+ return 1;
+ }
+ user_param = (struct te_oper_param_compat *)(uintptr_t)
+ param_array[i].next_ptr_user;
+ }
+ return 0;
+}
+
+static long te_handle_trustedapp_ioctl_compat(struct file *file,
+ unsigned int ioctl_num, unsigned long ioctl_param)
+{
+ long err = 0;
+ union te_cmd_compat cmd_compat;
+ struct te_operation_compat *operation = NULL;
+ struct te_oper_param_compat *params = NULL;
+ struct te_request_compat *request;
+ void __user *ptr_user_answer = NULL;
+ struct te_answer answer;
+ struct te_cmd_req_desc_compat *cmd_desc = NULL;
+ struct tlk_context *context = file->private_data;
+ struct tlk_device *dev = context->dev;
+
+ if (copy_from_user(&cmd_compat, (void __user *)ioctl_param,
+ sizeof(union te_cmd_compat))) {
+ pr_err("Failed to copy command request\n");
+ err = -EFAULT;
+ goto error;
+ }
+
+ memset(&answer, 0, sizeof(struct te_answer));
+
+ switch (ioctl_num) {
+ case TE_IOCTL_OPEN_CLIENT_SESSION_COMPAT:
+ operation = &cmd_compat.opensession.operation;
+ ptr_user_answer = (void *)(uintptr_t)
+ cmd_compat.opensession.answer;
+
+ cmd_desc = te_get_free_cmd_desc_compat(dev);
+ params = te_get_free_params_compat(dev, operation->list_count);
+
+ if (!cmd_desc || (operation->list_count && !params)) {
+ SET_ANSWER(answer,
+ OTE_ERROR_OUT_OF_MEMORY,
+ OTE_RESULT_ORIGIN_COMMS);
+ pr_err("failed to get cmd_desc/params\n");
+ goto error;
+ }
+
+ request = cmd_desc->req_addr;
+ memset(request, 0, sizeof(struct te_request_compat));
+
+ request->params = (uintptr_t)params;
+ request->params_size = operation->list_count;
+
+ if (copy_params_from_user_compat(request, operation)) {
+ err = -EFAULT;
+ pr_info("failed to copy params from user\n");
+ goto error;
+ }
+
+ te_open_session_compat(&cmd_compat.opensession,
+ request, context);
+
+ SET_ANSWER(answer, request->result, request->result_origin);
+ answer.session_id = request->session_id;
+ break;
+
+ case TE_IOCTL_CLOSE_CLIENT_SESSION_COMPAT:
+ ptr_user_answer = (void *)(uintptr_t)
+ cmd_compat.closesession.answer;
+ cmd_desc = te_get_free_cmd_desc_compat(dev);
+ if (!cmd_desc) {
+ SET_ANSWER(answer,
+ OTE_ERROR_OUT_OF_MEMORY,
+ OTE_RESULT_ORIGIN_COMMS);
+ pr_err("failed to get cmd_desc\n");
+ goto error;
+ }
+
+ request = cmd_desc->req_addr;
+ memset(request, 0, sizeof(struct te_request_compat));
+
+ /* close session cannot fail */
+ te_close_session_compat(&cmd_compat.closesession,
+ request, context);
+ break;
+
+ case TE_IOCTL_LAUNCH_OPERATION_COMPAT:
+ operation = &cmd_compat.launchop.operation;
+ ptr_user_answer = (void *)(uintptr_t)cmd_compat.launchop.answer;
+
+ cmd_desc = te_get_free_cmd_desc_compat(dev);
+ params = te_get_free_params_compat(dev, operation->list_count);
+
+ if (!cmd_desc || (operation->list_count && !params)) {
+ SET_ANSWER(answer,
+ OTE_ERROR_OUT_OF_MEMORY,
+ OTE_RESULT_ORIGIN_COMMS);
+ pr_err("failed to get cmd_desc/params\n");
+ goto error;
+ }
+
+ request = cmd_desc->req_addr;
+ memset(request, 0, sizeof(struct te_request_compat));
+
+ request->params = (uintptr_t)params;
+ request->params_size = operation->list_count;
+
+ if (copy_params_from_user_compat(request, operation)) {
+ err = -EFAULT;
+ pr_info("failed to copy params from user\n");
+ goto error;
+ }
+
+ te_launch_operation_compat(&cmd_compat.launchop,
+ request, context);
+
+ SET_ANSWER(answer, request->result, request->result_origin);
+ break;
+
+ default:
+ pr_err("Invalid IOCTL Cmd\n");
+ err = -EINVAL;
+ goto error;
+ }
+ if (ptr_user_answer && !err) {
+ if (copy_to_user(ptr_user_answer, &answer,
+ sizeof(struct te_answer))) {
+ pr_err("Failed to copy answer\n");
+ err = -EFAULT;
+ }
+ }
+ if (request->params && !err) {
+ if (copy_params_to_user_compat(request, operation)) {
+ pr_err("Failed to copy return params\n");
+ err = -EFAULT;
+ }
+ }
+
+error:
+ if (cmd_desc)
+ te_put_used_cmd_desc_compat(dev, cmd_desc);
+ if (params)
+ te_put_free_params_compat(dev, params, operation->list_count);
+ return err;
+}
+
static long tlk_device_ioctl(struct file *file, unsigned int ioctl_num,
unsigned long ioctl_param)
{
@@ -417,6 +703,15 @@ static long tlk_device_ioctl(struct file *file, unsigned int ioctl_num,
mutex_unlock(&smc_lock);
break;
+ case TE_IOCTL_OPEN_CLIENT_SESSION_COMPAT:
+ case TE_IOCTL_CLOSE_CLIENT_SESSION_COMPAT:
+ case TE_IOCTL_LAUNCH_OPERATION_COMPAT:
+ mutex_lock(&smc_lock);
+ err = te_handle_trustedapp_ioctl_compat(file, ioctl_num,
+ ioctl_param);
+ mutex_unlock(&smc_lock);
+ break;
+
case TE_IOCTL_FILE_NEW_REQ:
case TE_IOCTL_FILE_FILL_BUF:
case TE_IOCTL_FILE_REQ_COMPLETE:
@@ -446,6 +741,9 @@ static const struct file_operations tlk_device_fops = {
.open = tlk_device_open,
.release = tlk_device_release,
.unlocked_ioctl = tlk_device_ioctl,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = tlk_device_ioctl,
+#endif
};
struct miscdevice tlk_misc_device = {
generated by cgit v1.2.3 (git 2.0.4) at 2024-05-10 19:25:35 +0000