struct vpu_mbox tx_type;
struct vpu_mbox tx_data;
struct vpu_mbox rx;
- unsigned long cmd_seq;
wait_queue_head_t ack_wq;
struct completion cmp;
struct list_head cmd_q;
void *pending;
+ unsigned long cmd_seq;
+ atomic_long_t last_response_cmd;
struct vpu_inst_ops *ops;
const struct vpu_format *formats;
struct vpu_cmd_request *request;
struct vpu_rpc_event *pkt;
unsigned long key;
+ atomic_long_t *last_response_cmd;
};
static struct vpu_cmd_request vpu_cmd_requests[] = {
{
if (!cmd)
return;
+ if (cmd->last_response_cmd)
+ atomic_long_set(cmd->last_response_cmd, cmd->key);
vfree(cmd->pkt);
vfree(cmd);
}
return -ENOMEM;
mutex_lock(&core->cmd_lock);
- cmd->key = core->cmd_seq++;
+ cmd->key = ++inst->cmd_seq;
+ cmd->last_response_cmd = &inst->last_response_cmd;
if (key)
*key = cmd->key;
if (sync)
static bool check_is_responsed(struct vpu_inst *inst, unsigned long key)
{
- struct vpu_core *core = inst->core;
- struct vpu_cmd_t *cmd;
- bool flag = true;
+ unsigned long last_response = atomic_long_read(&inst->last_response_cmd);
- mutex_lock(&core->cmd_lock);
- cmd = inst->pending;
- if (cmd && key == cmd->key) {
- flag = false;
- goto exit;
- }
- list_for_each_entry(cmd, &inst->cmd_q, list) {
- if (key == cmd->key) {
- flag = false;
- break;
- }
- }
-exit:
- mutex_unlock(&core->cmd_lock);
+ if (key <= last_response && (last_response - key) < (ULONG_MAX >> 1))
+ return true;
- return flag;
+ return false;
}
static int sync_session_response(struct vpu_inst *inst, unsigned long key, long timeout, int try)