void mem_handle_cp_crash(struct mem_link_device *mld, enum modem_state state) { struct link_device *ld = &mld->link_dev; struct modem_ctl *mc = ld->mc; int i; /* Disable normal IPC */ set_magic(mld, MEM_CRASH_MAGIC); set_access(mld, 0); if (!wake_lock_active(&mld->dump_wlock)) wake_lock(&mld->dump_wlock); stop_net_ifaces(ld); /* Purge the skb_txq in every IPC device (IPC_FMT, IPC_RAW, etc.) */ for (i = 0; i < MAX_SIPC5_DEV; i++) skb_queue_purge(mld->dev[i]->skb_txq); if (cp_online(mc)) set_modem_state(mld, state); mld->forced_cp_crash = false; }
/** @brief trigger an enforced CP crash @param mld the pointer to a mem_link_device instance */ void mem_forced_cp_crash(struct mem_link_device *mld) { struct link_device *ld = &mld->link_dev; struct modem_ctl *mc = ld->mc; unsigned long flags; bool duplicated = false; #ifdef DEBUG_MODEM_IF struct utc_time t; #endif #ifdef DEBUG_MODEM_IF get_utc_time(&t); #endif /* Disable normal IPC */ set_magic(mld, MEM_CRASH_MAGIC); set_access(mld, 0); spin_lock_irqsave(&mld->lock, flags); if (mld->forced_cp_crash) duplicated = true; else mld->forced_cp_crash = true; spin_unlock_irqrestore(&mld->lock, flags); if (duplicated) { #ifdef DEBUG_MODEM_IF evt_log(HMSU_FMT " %s: %s: ALREADY in progress <%pf>\n", t.hour, t.min, t.sec, t.us, CALLEE, ld->name, CALLER); #endif return; } if (!cp_online(mc)) { #ifdef DEBUG_MODEM_IF evt_log(HMSU_FMT " %s: %s: %s.state %s != ONLINE <%pf>\n", t.hour, t.min, t.sec, t.us, CALLEE, ld->name, mc->name, mc_state(mc), CALLER); #endif return; } if (!wake_lock_active(&mld->dump_wlock)) wake_lock(&mld->dump_wlock); stop_net_ifaces(ld); /** * If there is no CRASH_ACK from a CP in FORCE_CRASH_ACK_TIMEOUT, * handle_no_cp_crash_ack() will be executed. */ mif_add_timer(&mld->crash_ack_timer, FORCE_CRASH_ACK_TIMEOUT, handle_no_cp_crash_ack, (unsigned long)mld); /* Send CRASH_EXIT command to a CP */ send_ipc_irq(mld, cmd2int(CMD_CRASH_EXIT)); #ifdef DEBUG_MODEM_IF evt_log(HMSU_FMT " CRASH_EXIT: %s->%s: CP_CRASH_REQ <by %pf>\n", t.hour, t.min, t.sec, t.us, ld->name, mc->name, CALLER); if (in_interrupt()) queue_work(system_nrt_wq, &mld->dump_work); else save_mem_dump(mld); #endif }
static inline void stop_tx(struct mem_link_device *mld) { struct link_device *ld = &mld->link_dev; stop_net_ifaces(ld); }
void mem_forced_cp_crash(struct mem_link_device *mld) { struct link_device *ld = &mld->link_dev; struct modem_ctl *mc = ld->mc; bool duplicated = false; unsigned long flags; /* Disable normal IPC */ set_magic(mld, MEM_CRASH_MAGIC); set_access(mld, 0); spin_lock_irqsave(&mld->lock, flags); if (atomic_read(&mc->forced_cp_crash)) duplicated = true; else atomic_set(&mc->forced_cp_crash, 1); spin_unlock_irqrestore(&mld->lock, flags); if (duplicated) { evt_log(0, "%s: %s: ALREADY in progress <%pf>\n", FUNC, ld->name, CALLER); return; } if (!cp_online(mc)) { evt_log(0, "%s: %s: %s.state %s != ONLINE <%pf>\n", FUNC, ld->name, mc->name, mc_state(mc), CALLER); return; } if (mc->wake_lock) { if (!wake_lock_active(mc->wake_lock)) { wake_lock(mc->wake_lock); mif_err("%s->wake_lock locked\n", mc->name); } } if (mld->attrs & LINK_ATTR(LINK_ATTR_MEM_DUMP)) { stop_net_ifaces(ld); if (mld->debug_info) mld->debug_info(); /** * If there is no CRASH_ACK from CP in a timeout, * handle_no_cp_crash_ack() will be executed. */ mif_add_timer(&mc->crash_ack_timer, FORCE_CRASH_ACK_TIMEOUT, handle_no_cp_crash_ack, (unsigned long)mld); /* Send CRASH_EXIT command to a CP */ send_ipc_irq(mld, cmd2int(CMD_CRASH_EXIT)); } else { modemctl_notify_event(MDM_EVENT_CP_FORCE_CRASH); } evt_log(0, "%s->%s: CP_CRASH_REQ <%pf>\n", ld->name, mc->name, CALLER); #ifdef DEBUG_MODEM_IF if (in_interrupt()) queue_work(system_nrt_wq, &mld->dump_work); else save_mem_dump(mld); #endif }