diff options
Diffstat (limited to '')
-rw-r--r-- | drivers/arm/rss/rss_comms_protocol_pointer_access.c | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/drivers/arm/rss/rss_comms_protocol_pointer_access.c b/drivers/arm/rss/rss_comms_protocol_pointer_access.c new file mode 100644 index 0000000..5007b9d --- /dev/null +++ b/drivers/arm/rss/rss_comms_protocol_pointer_access.c @@ -0,0 +1,74 @@ +/* + * Copyright (c) 2022, Arm Limited. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + * + */ +#include <assert.h> + +#include "rss_comms_protocol_pointer_access.h" + +#define TYPE_OFFSET (16U) +#define TYPE_MASK (0xFFFFUL << TYPE_OFFSET) +#define IN_LEN_OFFSET (8U) +#define IN_LEN_MASK (0xFFUL << IN_LEN_OFFSET) +#define OUT_LEN_OFFSET (0U) +#define OUT_LEN_MASK (0xFFUL << OUT_LEN_OFFSET) + +#define PARAM_PACK(type, in_len, out_len) \ + (((((uint32_t)type) << TYPE_OFFSET) & TYPE_MASK) | \ + ((((uint32_t)in_len) << IN_LEN_OFFSET) & IN_LEN_MASK) | \ + ((((uint32_t)out_len) << OUT_LEN_OFFSET) & OUT_LEN_MASK)) + +psa_status_t rss_protocol_pointer_access_serialize_msg(psa_handle_t handle, + int16_t type, + const psa_invec *in_vec, + uint8_t in_len, + const psa_outvec *out_vec, + uint8_t out_len, + struct rss_pointer_access_msg_t *msg, + size_t *msg_len) +{ + unsigned int i; + + assert(msg != NULL); + assert(msg_len != NULL); + assert(in_vec != NULL); + + msg->ctrl_param = PARAM_PACK(type, in_len, out_len); + msg->handle = handle; + + /* Fill msg iovec lengths */ + for (i = 0U; i < in_len; ++i) { + msg->io_sizes[i] = in_vec[i].len; + msg->host_ptrs[i] = (uint64_t)in_vec[i].base; + } + for (i = 0U; i < out_len; ++i) { + msg->io_sizes[in_len + i] = out_vec[i].len; + msg->host_ptrs[in_len + i] = (uint64_t)out_vec[i].base; + } + + *msg_len = sizeof(*msg); + + return PSA_SUCCESS; +} + +psa_status_t rss_protocol_pointer_access_deserialize_reply(psa_outvec *out_vec, + uint8_t out_len, + psa_status_t *return_val, + const struct rss_pointer_access_reply_t *reply, + size_t reply_size) +{ + unsigned int i; + + assert(reply != NULL); + assert(return_val != NULL); + + for (i = 0U; i < out_len; ++i) { + out_vec[i].len = reply->out_sizes[i]; + } + + *return_val = reply->return_val; + + return PSA_SUCCESS; +} |