static int ipmi_powernv_recv(struct ipmi_smi_powernv *smi)
{
struct opal_ipmi_msg *opal_msg;
struct ipmi_smi_msg *msg;
unsigned long flags;
uint64_t size;
int rc;
pr_devel("%s: opal_ipmi_recv(%llx, msg, sz)\n", __func__,
smi->interface_id);
spin_lock_irqsave(&smi->msg_lock, flags);
if (!smi->cur_msg) {
spin_unlock_irqrestore(&smi->msg_lock, flags);
pr_warn("no current message?\n");
return 0;
}
msg = smi->cur_msg;
opal_msg = smi->opal_msg;
size = cpu_to_be64(sizeof(*opal_msg) + IPMI_MAX_MSG_LENGTH);
rc = opal_ipmi_recv(smi->interface_id,
opal_msg,
&size);
size = be64_to_cpu(size);
pr_devel("%s: -> %d (size %lld)\n", __func__,
rc, rc == 0 ? size : 0);
if (rc) {
spin_unlock_irqrestore(&smi->msg_lock, flags);
ipmi_free_smi_msg(msg);
return 0;
}
if (size < sizeof(*opal_msg)) {
spin_unlock_irqrestore(&smi->msg_lock, flags);
pr_warn("unexpected IPMI message size %lld\n", size);
return 0;
}
if (opal_msg->version != OPAL_IPMI_MSG_FORMAT_VERSION_1) {
spin_unlock_irqrestore(&smi->msg_lock, flags);
pr_warn("unexpected IPMI message format (version %d)\n",
opal_msg->version);
return 0;
}
msg->rsp[0] = opal_msg->netfn;
msg->rsp[1] = opal_msg->cmd;
if (size > sizeof(*opal_msg))
memcpy(&msg->rsp[2], opal_msg->data, size - sizeof(*opal_msg));
msg->rsp_size = 2 + size - sizeof(*opal_msg);
smi->cur_msg = NULL;
spin_unlock_irqrestore(&smi->msg_lock, flags);
ipmi_smi_msg_received(smi->intf, msg);
return 0;
}
static void deliver_recv_msg(struct kcs_info *kcs_info, struct ipmi_smi_msg *msg)
{
/* Deliver the message to the upper layer with the lock
released. */
spin_unlock(&(kcs_info->kcs_lock));
ipmi_smi_msg_received(kcs_info->intf, msg);
spin_lock(&(kcs_info->kcs_lock));
}
static void send_error_reply(struct ipmi_smi_powernv *smi,
struct ipmi_smi_msg *msg, u8 completion_code)
{
msg->rsp[0] = msg->data[0] | 0x4;
msg->rsp[1] = msg->data[1];
msg->rsp[2] = completion_code;
msg->rsp_size = 3;
ipmi_smi_msg_received(smi->intf, msg);
}
static void deliver_recv_msg(struct smi_info *smi_info,
struct ipmi_smi_msg *msg)
{
/* Deliver the message to the upper layer. */
if (smi_info->intf)
ipmi_smi_msg_received(smi_info->intf, msg);
else
ipmi_free_smi_msg(msg);
}