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IDC: fix message cache handling #8189

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merged 1 commit into from
Sep 14, 2023
Merged

IDC: fix message cache handling #8189

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5 changes: 4 additions & 1 deletion src/idc/zephyr_idc.c
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Original file line number Diff line number Diff line change
Expand Up @@ -63,7 +63,8 @@ static void idc_handler(struct k_p4wq_work *work)
int payload = -1;
k_spinlock_key_t key;

sys_cache_data_flush_range(msg, sizeof(*msg));
/* A message is received from another core, invalidate local cache */
sys_cache_data_invd_range(msg, sizeof(*msg));

if (msg->size == sizeof(int)) {
const int idc_handler_memcpy_err __unused =
Expand Down Expand Up @@ -123,12 +124,14 @@ int idc_send_msg(struct idc_msg *msg, uint32_t mode)
msg->payload, msg->size);
assert(!idc_send_memcpy_err);

/* Sending a message to another core, write back local payload cache */
sys_cache_data_flush_range(payload->data, MIN(sizeof(payload->data), msg->size));
}

/* Temporarily store sender core ID */
msg_cp->core = cpu_get_id();

/* Sending a message to another core, write back local message cache */
sys_cache_data_flush_range(msg_cp, sizeof(*msg_cp));
k_p4wq_submit(q_zephyr_idc + target_cpu, work);

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