Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * Copyright (c) 2015-2016, Linaro Limited
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6) #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <linux/i2c.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <linux/tee_drv.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include "optee_private.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include "optee_smc.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) struct wq_entry {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) 	struct list_head link;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) 	struct completion c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) 	u32 key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) void optee_wait_queue_init(struct optee_wait_queue *priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 	mutex_init(&priv->mu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) 	INIT_LIST_HEAD(&priv->db);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) void optee_wait_queue_exit(struct optee_wait_queue *priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 	mutex_destroy(&priv->mu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) static void handle_rpc_func_cmd_get_time(struct optee_msg_arg *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 	struct timespec64 ts;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 	if (arg->num_params != 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 		goto bad;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 	if ((arg->params[0].attr & OPTEE_MSG_ATTR_TYPE_MASK) !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 			OPTEE_MSG_ATTR_TYPE_VALUE_OUTPUT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 		goto bad;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 	ktime_get_real_ts64(&ts);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 	arg->params[0].u.value.a = ts.tv_sec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 	arg->params[0].u.value.b = ts.tv_nsec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 	arg->ret = TEEC_SUCCESS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) bad:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 	arg->ret = TEEC_ERROR_BAD_PARAMETERS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) #if IS_REACHABLE(CONFIG_I2C)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) static void handle_rpc_func_cmd_i2c_transfer(struct tee_context *ctx,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 					     struct optee_msg_arg *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	struct tee_param *params;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	struct i2c_adapter *adapter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	struct i2c_msg msg = { };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	size_t i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	int ret = -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 	u8 attr[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 		TEE_IOCTL_PARAM_ATTR_TYPE_VALUE_INPUT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 		TEE_IOCTL_PARAM_ATTR_TYPE_VALUE_INPUT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 		TEE_IOCTL_PARAM_ATTR_TYPE_MEMREF_INOUT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 		TEE_IOCTL_PARAM_ATTR_TYPE_VALUE_OUTPUT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	if (arg->num_params != ARRAY_SIZE(attr)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 		arg->ret = TEEC_ERROR_BAD_PARAMETERS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 	params = kmalloc_array(arg->num_params, sizeof(struct tee_param),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 			       GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	if (!params) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 		arg->ret = TEEC_ERROR_OUT_OF_MEMORY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	if (optee_from_msg_param(params, arg->num_params, arg->params))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 		goto bad;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	for (i = 0; i < arg->num_params; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 		if (params[i].attr != attr[i])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 			goto bad;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 	adapter = i2c_get_adapter(params[0].u.value.b);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 	if (!adapter)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 		goto bad;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	if (params[1].u.value.a & OPTEE_MSG_RPC_CMD_I2C_FLAGS_TEN_BIT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 		if (!i2c_check_functionality(adapter,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 					     I2C_FUNC_10BIT_ADDR)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 			i2c_put_adapter(adapter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 			goto bad;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 		msg.flags = I2C_M_TEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	msg.addr = params[0].u.value.c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	msg.buf  = params[2].u.memref.shm->kaddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	msg.len  = params[2].u.memref.size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 	switch (params[0].u.value.a) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	case OPTEE_MSG_RPC_CMD_I2C_TRANSFER_RD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 		msg.flags |= I2C_M_RD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	case OPTEE_MSG_RPC_CMD_I2C_TRANSFER_WR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 		i2c_put_adapter(adapter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 		goto bad;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 	ret = i2c_transfer(adapter, &msg, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 	if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 		arg->ret = TEEC_ERROR_COMMUNICATION;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 		params[3].u.value.a = msg.len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 		if (optee_to_msg_param(arg->params, arg->num_params, params))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 			arg->ret = TEEC_ERROR_BAD_PARAMETERS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 		else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 			arg->ret = TEEC_SUCCESS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 	i2c_put_adapter(adapter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 	kfree(params);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) bad:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 	kfree(params);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	arg->ret = TEEC_ERROR_BAD_PARAMETERS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) static void handle_rpc_func_cmd_i2c_transfer(struct tee_context *ctx,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 					     struct optee_msg_arg *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	arg->ret = TEEC_ERROR_NOT_SUPPORTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) static struct wq_entry *wq_entry_get(struct optee_wait_queue *wq, u32 key)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	struct wq_entry *w;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	mutex_lock(&wq->mu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 	list_for_each_entry(w, &wq->db, link)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 		if (w->key == key)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 			goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 	w = kmalloc(sizeof(*w), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 	if (w) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 		init_completion(&w->c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 		w->key = key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 		list_add_tail(&w->link, &wq->db);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 	mutex_unlock(&wq->mu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 	return w;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) static void wq_sleep(struct optee_wait_queue *wq, u32 key)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 	struct wq_entry *w = wq_entry_get(wq, key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 	if (w) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 		wait_for_completion(&w->c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 		mutex_lock(&wq->mu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 		list_del(&w->link);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 		mutex_unlock(&wq->mu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 		kfree(w);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) static void wq_wakeup(struct optee_wait_queue *wq, u32 key)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 	struct wq_entry *w = wq_entry_get(wq, key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 	if (w)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 		complete(&w->c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) static void handle_rpc_func_cmd_wq(struct optee *optee,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 				   struct optee_msg_arg *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 	if (arg->num_params != 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 		goto bad;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 	if ((arg->params[0].attr & OPTEE_MSG_ATTR_TYPE_MASK) !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 			OPTEE_MSG_ATTR_TYPE_VALUE_INPUT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 		goto bad;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	switch (arg->params[0].u.value.a) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 	case OPTEE_MSG_RPC_WAIT_QUEUE_SLEEP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 		wq_sleep(&optee->wait_queue, arg->params[0].u.value.b);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 	case OPTEE_MSG_RPC_WAIT_QUEUE_WAKEUP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 		wq_wakeup(&optee->wait_queue, arg->params[0].u.value.b);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 		goto bad;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 	arg->ret = TEEC_SUCCESS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 	return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) bad:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 	arg->ret = TEEC_ERROR_BAD_PARAMETERS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) static void handle_rpc_func_cmd_wait(struct optee_msg_arg *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	u32 msec_to_wait;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 	if (arg->num_params != 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 		goto bad;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 	if ((arg->params[0].attr & OPTEE_MSG_ATTR_TYPE_MASK) !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 			OPTEE_MSG_ATTR_TYPE_VALUE_INPUT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 		goto bad;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 	msec_to_wait = arg->params[0].u.value.a;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 	/* Go to interruptible sleep */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 	msleep_interruptible(msec_to_wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 	arg->ret = TEEC_SUCCESS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 	return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) bad:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	arg->ret = TEEC_ERROR_BAD_PARAMETERS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) static void handle_rpc_supp_cmd(struct tee_context *ctx,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 				struct optee_msg_arg *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 	struct tee_param *params;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 	arg->ret_origin = TEEC_ORIGIN_COMMS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 	params = kmalloc_array(arg->num_params, sizeof(struct tee_param),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 			       GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 	if (!params) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 		arg->ret = TEEC_ERROR_OUT_OF_MEMORY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 	if (optee_from_msg_param(params, arg->num_params, arg->params)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 		arg->ret = TEEC_ERROR_BAD_PARAMETERS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 		goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 	arg->ret = optee_supp_thrd_req(ctx, arg->cmd, arg->num_params, params);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 	if (optee_to_msg_param(arg->params, arg->num_params, params))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 		arg->ret = TEEC_ERROR_BAD_PARAMETERS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 	kfree(params);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) static struct tee_shm *cmd_alloc_suppl(struct tee_context *ctx, size_t sz)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 	u32 ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 	struct tee_param param;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 	struct optee *optee = tee_get_drvdata(ctx->teedev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 	struct tee_shm *shm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 	param.attr = TEE_IOCTL_PARAM_ATTR_TYPE_VALUE_INOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 	param.u.value.a = OPTEE_MSG_RPC_SHM_TYPE_APPL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 	param.u.value.b = sz;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 	param.u.value.c = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 	ret = optee_supp_thrd_req(ctx, OPTEE_MSG_RPC_CMD_SHM_ALLOC, 1, &param);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 		return ERR_PTR(-ENOMEM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 	mutex_lock(&optee->supp.mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 	/* Increases count as secure world doesn't have a reference */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 	shm = tee_shm_get_from_id(optee->supp.ctx, param.u.value.c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 	mutex_unlock(&optee->supp.mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 	return shm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) static void handle_rpc_func_cmd_shm_alloc(struct tee_context *ctx,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 					  struct optee *optee,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 					  struct optee_msg_arg *arg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 					  struct optee_call_ctx *call_ctx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 	phys_addr_t pa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) 	struct tee_shm *shm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 	size_t sz;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 	size_t n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 	arg->ret_origin = TEEC_ORIGIN_COMMS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) 	if (!arg->num_params ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) 	    arg->params[0].attr != OPTEE_MSG_ATTR_TYPE_VALUE_INPUT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) 		arg->ret = TEEC_ERROR_BAD_PARAMETERS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) 	for (n = 1; n < arg->num_params; n++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) 		if (arg->params[n].attr != OPTEE_MSG_ATTR_TYPE_NONE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 			arg->ret = TEEC_ERROR_BAD_PARAMETERS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) 			return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) 	sz = arg->params[0].u.value.b;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) 	switch (arg->params[0].u.value.a) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) 	case OPTEE_MSG_RPC_SHM_TYPE_APPL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) 		shm = cmd_alloc_suppl(ctx, sz);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) 	case OPTEE_MSG_RPC_SHM_TYPE_KERNEL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) 		shm = tee_shm_alloc(optee->ctx, sz,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) 				    TEE_SHM_MAPPED | TEE_SHM_PRIV);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) 		arg->ret = TEEC_ERROR_BAD_PARAMETERS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) 	if (IS_ERR(shm)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) 		arg->ret = TEEC_ERROR_OUT_OF_MEMORY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) 	if (tee_shm_get_pa(shm, 0, &pa)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) 		arg->ret = TEEC_ERROR_BAD_PARAMETERS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) 		goto bad;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) 	sz = tee_shm_get_size(shm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) 	if (tee_shm_is_registered(shm)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) 		struct page **pages;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) 		u64 *pages_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) 		size_t page_num;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) 		pages = tee_shm_get_pages(shm, &page_num);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) 		if (!pages || !page_num) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) 			arg->ret = TEEC_ERROR_OUT_OF_MEMORY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) 			goto bad;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) 		pages_list = optee_allocate_pages_list(page_num);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) 		if (!pages_list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) 			arg->ret = TEEC_ERROR_OUT_OF_MEMORY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) 			goto bad;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) 		call_ctx->pages_list = pages_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) 		call_ctx->num_entries = page_num;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) 		arg->params[0].attr = OPTEE_MSG_ATTR_TYPE_TMEM_OUTPUT |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) 				      OPTEE_MSG_ATTR_NONCONTIG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) 		/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) 		 * In the least bits of u.tmem.buf_ptr we store buffer offset
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) 		 * from 4k page, as described in OP-TEE ABI.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) 		 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) 		arg->params[0].u.tmem.buf_ptr = virt_to_phys(pages_list) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) 			(tee_shm_get_page_offset(shm) &
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) 			 (OPTEE_MSG_NONCONTIG_PAGE_SIZE - 1));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) 		arg->params[0].u.tmem.size = tee_shm_get_size(shm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) 		arg->params[0].u.tmem.shm_ref = (unsigned long)shm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) 		optee_fill_pages_list(pages_list, pages, page_num,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) 				      tee_shm_get_page_offset(shm));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) 		arg->params[0].attr = OPTEE_MSG_ATTR_TYPE_TMEM_OUTPUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) 		arg->params[0].u.tmem.buf_ptr = pa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) 		arg->params[0].u.tmem.size = sz;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) 		arg->params[0].u.tmem.shm_ref = (unsigned long)shm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) 	arg->ret = TEEC_SUCCESS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) 	return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) bad:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) 	tee_shm_free(shm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) static void cmd_free_suppl(struct tee_context *ctx, struct tee_shm *shm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) 	struct tee_param param;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) 	param.attr = TEE_IOCTL_PARAM_ATTR_TYPE_VALUE_INOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) 	param.u.value.a = OPTEE_MSG_RPC_SHM_TYPE_APPL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) 	param.u.value.b = tee_shm_get_id(shm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) 	param.u.value.c = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) 	 * Match the tee_shm_get_from_id() in cmd_alloc_suppl() as secure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) 	 * world has released its reference.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) 	 *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) 	 * It's better to do this before sending the request to supplicant
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) 	 * as we'd like to let the process doing the initial allocation to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) 	 * do release the last reference too in order to avoid stacking
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) 	 * many pending fput() on the client process. This could otherwise
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) 	 * happen if secure world does many allocate and free in a single
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) 	 * invoke.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) 	tee_shm_put(shm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) 	optee_supp_thrd_req(ctx, OPTEE_MSG_RPC_CMD_SHM_FREE, 1, &param);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) static void handle_rpc_func_cmd_shm_free(struct tee_context *ctx,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) 					 struct optee_msg_arg *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) 	struct tee_shm *shm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) 	arg->ret_origin = TEEC_ORIGIN_COMMS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) 	if (arg->num_params != 1 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) 	    arg->params[0].attr != OPTEE_MSG_ATTR_TYPE_VALUE_INPUT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) 		arg->ret = TEEC_ERROR_BAD_PARAMETERS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) 	shm = (struct tee_shm *)(unsigned long)arg->params[0].u.value.b;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) 	switch (arg->params[0].u.value.a) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) 	case OPTEE_MSG_RPC_SHM_TYPE_APPL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) 		cmd_free_suppl(ctx, shm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) 	case OPTEE_MSG_RPC_SHM_TYPE_KERNEL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) 		tee_shm_free(shm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) 		arg->ret = TEEC_ERROR_BAD_PARAMETERS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) 	arg->ret = TEEC_SUCCESS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) static void free_pages_list(struct optee_call_ctx *call_ctx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) 	if (call_ctx->pages_list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) 		optee_free_pages_list(call_ctx->pages_list,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) 				      call_ctx->num_entries);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) 		call_ctx->pages_list = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) 		call_ctx->num_entries = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) void optee_rpc_finalize_call(struct optee_call_ctx *call_ctx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) 	free_pages_list(call_ctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) static void handle_rpc_func_cmd(struct tee_context *ctx, struct optee *optee,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) 				struct tee_shm *shm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) 				struct optee_call_ctx *call_ctx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) 	struct optee_msg_arg *arg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) 	arg = tee_shm_get_va(shm, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) 	if (IS_ERR(arg)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) 		pr_err("%s: tee_shm_get_va %p failed\n", __func__, shm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) 	switch (arg->cmd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) 	case OPTEE_MSG_RPC_CMD_GET_TIME:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) 		handle_rpc_func_cmd_get_time(arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) 	case OPTEE_MSG_RPC_CMD_WAIT_QUEUE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) 		handle_rpc_func_cmd_wq(optee, arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) 	case OPTEE_MSG_RPC_CMD_SUSPEND:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) 		handle_rpc_func_cmd_wait(arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) 	case OPTEE_MSG_RPC_CMD_SHM_ALLOC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) 		free_pages_list(call_ctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) 		handle_rpc_func_cmd_shm_alloc(ctx, optee, arg, call_ctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) 	case OPTEE_MSG_RPC_CMD_SHM_FREE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) 		handle_rpc_func_cmd_shm_free(ctx, arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) 	case OPTEE_MSG_RPC_CMD_I2C_TRANSFER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) 		handle_rpc_func_cmd_i2c_transfer(ctx, arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) 		handle_rpc_supp_cmd(ctx, arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489)  * optee_handle_rpc() - handle RPC from secure world
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490)  * @ctx:	context doing the RPC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491)  * @param:	value of registers for the RPC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492)  * @call_ctx:	call context. Preserved during one OP-TEE invocation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494)  * Result of RPC is written back into @param.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) void optee_handle_rpc(struct tee_context *ctx, struct optee_rpc_param *param,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) 		      struct optee_call_ctx *call_ctx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) 	struct tee_device *teedev = ctx->teedev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) 	struct optee *optee = tee_get_drvdata(teedev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) 	struct tee_shm *shm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) 	phys_addr_t pa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) 	switch (OPTEE_SMC_RETURN_GET_RPC_FUNC(param->a0)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) 	case OPTEE_SMC_RPC_FUNC_ALLOC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) 		shm = tee_shm_alloc(optee->ctx, param->a1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) 				    TEE_SHM_MAPPED | TEE_SHM_PRIV);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) 		if (!IS_ERR(shm) && !tee_shm_get_pa(shm, 0, &pa)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) 			reg_pair_from_64(&param->a1, &param->a2, pa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) 			reg_pair_from_64(&param->a4, &param->a5,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) 					 (unsigned long)shm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) 		} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) 			param->a1 = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) 			param->a2 = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) 			param->a4 = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) 			param->a5 = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) 	case OPTEE_SMC_RPC_FUNC_FREE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) 		shm = reg_pair_to_ptr(param->a1, param->a2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) 		tee_shm_free(shm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) 	case OPTEE_SMC_RPC_FUNC_FOREIGN_INTR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) 		/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) 		 * A foreign interrupt was raised while secure world was
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) 		 * executing, since they are handled in Linux a dummy RPC is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) 		 * performed to let Linux take the interrupt through the normal
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) 		 * vector.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) 		 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) 	case OPTEE_SMC_RPC_FUNC_CMD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) 		shm = reg_pair_to_ptr(param->a1, param->a2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) 		handle_rpc_func_cmd(ctx, optee, shm, call_ctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) 		pr_warn("Unknown RPC func 0x%x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) 			(u32)OPTEE_SMC_RETURN_GET_RPC_FUNC(param->a0));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) 	param->a0 = OPTEE_SMC_CALL_RETURN_FROM_RPC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) }