diff options
Diffstat (limited to 'drivers/staging/csr/sme_native.c')
| -rw-r--r-- | drivers/staging/csr/sme_native.c | 591 |
1 files changed, 591 insertions, 0 deletions
diff --git a/drivers/staging/csr/sme_native.c b/drivers/staging/csr/sme_native.c new file mode 100644 index 000000000000..229268fd746c --- /dev/null +++ b/drivers/staging/csr/sme_native.c @@ -0,0 +1,591 @@ +/* + * *************************************************************************** + * + * FILE: sme_native.c + * + * Copyright (C) 2005-2009 by Cambridge Silicon Radio Ltd. + * + * Refer to LICENSE.txt included with this source code for details on + * the license terms. + * + * *************************************************************************** + */ + +#include <linux/netdevice.h> + +#include "unifi_priv.h" +#include "csr_wifi_hip_unifi.h" +#include "csr_wifi_hip_conversions.h" + +static const unsigned char wildcard_address[ETH_ALEN] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; + +int +uf_sme_init(unifi_priv_t *priv) +{ + func_enter(); + +#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 37) + sema_init(&priv->mlme_blocking_mutex, 1); +#else + init_MUTEX(&priv->mlme_blocking_mutex); +#endif + +#ifdef CSR_SUPPORT_WEXT + { + int r = uf_init_wext_interface(priv); + if (r != 0) { + func_exit(); + return r; + } + } +#endif + + + + func_exit(); + return 0; +} /* uf_sme_init() */ + + +void +uf_sme_deinit(unifi_priv_t *priv) +{ + + func_enter(); + + /* Free memory allocated for the scan table */ +/* unifi_clear_scan_table(priv); */ + + /* Cancel any pending workqueue tasks */ + flush_workqueue(priv->unifi_workqueue); + +#ifdef CSR_SUPPORT_WEXT + uf_deinit_wext_interface(priv); +#endif + + + func_exit(); +} /* uf_sme_deinit() */ + + +int sme_mgt_wifi_on(unifi_priv_t *priv) +{ + int r,i; + s32 csrResult; + + if (priv == NULL) { + return -EINVAL; + } + /* Initialize the interface mode to None */ + for (i=0; i<CSR_WIFI_NUM_INTERFACES; i++) { + priv->interfacePriv[i]->interfaceMode = 0; + } + + /* Set up interface mode so that get_packet_priority() can + * select the right QOS priority when WMM is enabled. + */ + priv->interfacePriv[0]->interfaceMode = CSR_WIFI_ROUTER_CTRL_MODE_STA; + + r = uf_request_firmware_files(priv, UNIFI_FW_STA); + if (r) { + unifi_error(priv, "sme_mgt_wifi_on: Failed to get f/w\n"); + return r; + } + + /* + * The request to initialise UniFi might come while UniFi is running. + * We need to block all I/O activity until the reset completes, otherwise + * an SDIO error might occur resulting an indication to the SME which + * makes it think that the initialisation has failed. + */ + priv->bh_thread.block_thread = 1; + + /* Power on UniFi */ + CsrSdioClaim(priv->sdio); + csrResult = CsrSdioPowerOn(priv->sdio); + CsrSdioRelease(priv->sdio); + if(csrResult != CSR_RESULT_SUCCESS && csrResult != CSR_SDIO_RESULT_NOT_RESET) { + return -EIO; + } + + if (csrResult == CSR_RESULT_SUCCESS) { + /* Initialise UniFi hardware */ + r = uf_init_hw(priv); + if (r) { + return r; + } + } + + /* Re-enable the I/O thread */ + priv->bh_thread.block_thread = 0; + + /* Disable deep sleep signalling during the firmware initialisation, to + * prevent the wakeup mechanism raising the SDIO clock beyond INIT before + * the first MLME-RESET.ind. It gets re-enabled at the CONNECTED.ind, + * immediately after the MLME-RESET.ind + */ + csrResult = unifi_configure_low_power_mode(priv->card, + UNIFI_LOW_POWER_DISABLED, + UNIFI_PERIODIC_WAKE_HOST_DISABLED); + if (csrResult != CSR_RESULT_SUCCESS) { + unifi_warning(priv, + "sme_mgt_wifi_on: unifi_configure_low_power_mode() returned an error\n"); + } + + + /* Start the I/O thread */ + CsrSdioClaim(priv->sdio); + r = uf_init_bh(priv); + if (r) { + CsrSdioPowerOff(priv->sdio); + CsrSdioRelease(priv->sdio); + return r; + } + CsrSdioRelease(priv->sdio); + + priv->init_progress = UNIFI_INIT_FW_DOWNLOADED; + + return 0; +} + +int +sme_sys_suspend(unifi_priv_t *priv) +{ + const int interfaceNum = 0; /* FIXME */ + CsrResult csrResult; + + /* Abort any pending requests. */ + uf_abort_mlme(priv); + + /* Allow our mlme request to go through. */ + priv->io_aborted = 0; + + /* Send MLME-RESET.req to UniFi. */ + unifi_reset_state(priv, priv->netdev[interfaceNum]->dev_addr, 0); + + /* Stop the network traffic */ + netif_carrier_off(priv->netdev[interfaceNum]); + + /* Put UniFi to deep sleep */ + CsrSdioClaim(priv->sdio); + csrResult = unifi_force_low_power_mode(priv->card); + CsrSdioRelease(priv->sdio); + + return 0; +} /* sme_sys_suspend() */ + + +int +sme_sys_resume(unifi_priv_t *priv) +{ +#ifdef CSR_SUPPORT_WEXT + /* Send disconnect event so clients will re-initialise connection. */ + memset(priv->wext_conf.current_ssid, 0, UNIFI_MAX_SSID_LEN); + memset((void*)priv->wext_conf.current_bssid, 0, ETH_ALEN); + priv->wext_conf.capability = 0; + wext_send_disassoc_event(priv); +#endif + return 0; +} /* sme_sys_resume() */ + + +/* + * --------------------------------------------------------------------------- + * sme_native_log_event + * + * Callback function to be registered as the SME event callback. + * Copies the signal content into a new udi_log_t struct and adds + * it to the read queue for the SME client. + * + * Arguments: + * arg This is the value given to unifi_add_udi_hook, in + * this case a pointer to the client instance. + * signal Pointer to the received signal. + * signal_len Size of the signal structure in bytes. + * bulkdata Pointers to any associated bulk data. + * dir Direction of the signal. Zero means from host, + * non-zero means to host. + * + * Returns: + * None. + * --------------------------------------------------------------------------- + */ +void +sme_native_log_event(ul_client_t *pcli, + const u8 *sig_packed, int sig_len, + const bulk_data_param_t *bulkdata, + int dir) +{ + unifi_priv_t *priv; + udi_log_t *logptr; + u8 *p; + int i, r; + int signal_len; + int total_len; + udi_msg_t *msgptr; + CSR_SIGNAL signal; + ul_client_t *client = pcli; + + func_enter(); + + if (client == NULL) { + unifi_error(NULL, "sme_native_log_event: client has exited\n"); + return; + } + + priv = uf_find_instance(client->instance); + if (!priv) { + unifi_error(priv, "invalid priv\n"); + return; + } + + /* Just a sanity check */ + if ((sig_packed == NULL) || (sig_len <= 0)) { + return; + } + + /* Get the unpacked signal */ + r = read_unpack_signal(sig_packed, &signal); + if (r == 0) { + signal_len = SigGetSize(&signal); + } else { + u16 receiver_id = CSR_GET_UINT16_FROM_LITTLE_ENDIAN((sig_packed) + sizeof(u16)) & 0xFF00; + + /* The control indications are 1 byte, pass them to client. */ + if (sig_len == 1) { + unifi_trace(priv, UDBG5, + "Control indication (0x%x) for native SME.\n", + *sig_packed); + + *(u8*)&signal = *sig_packed; + signal_len = sig_len; + } else if (receiver_id == 0) { + /* + * Also "unknown" signals with a ReceiverId of 0 are passed to the client + * without unpacking. (This is a code size optimisation to allow signals + * that the driver not interested in to be dropped from the unpack code). + */ + unifi_trace(priv, UDBG5, + "Signal 0x%.4X with ReceiverId 0 for native SME.\n", + CSR_GET_UINT16_FROM_LITTLE_ENDIAN(sig_packed)); + + *(u8*)&signal = *sig_packed; + signal_len = sig_len; + } else { + unifi_error(priv, + "sme_native_log_event - Received unknown signal 0x%.4X.\n", + CSR_GET_UINT16_FROM_LITTLE_ENDIAN(sig_packed)); + return; + } + } + + unifi_trace(priv, UDBG3, "sme_native_log_event: signal 0x%.4X for %d\n", + signal.SignalPrimitiveHeader.SignalId, + client->client_id); + + total_len = signal_len; + /* Calculate the buffer we need to store signal plus bulk data */ + for (i = 0; i < UNIFI_MAX_DATA_REFERENCES; i++) { + total_len += bulkdata->d[i].data_length; + } + + /* Allocate log structure plus actual signal. */ + logptr = (udi_log_t *)kmalloc(sizeof(udi_log_t) + total_len, GFP_KERNEL); + + if (logptr == NULL) { + unifi_error(priv, + "Failed to allocate %d bytes for a UDI log record\n", + sizeof(udi_log_t) + total_len); + return; + } + + /* Fill in udi_log struct */ + INIT_LIST_HEAD(&logptr->q); + msgptr = &logptr->msg; + msgptr->length = sizeof(udi_msg_t) + total_len; + msgptr->timestamp = jiffies_to_msecs(jiffies); + msgptr->direction = dir; + msgptr->signal_length = signal_len; + + /* Copy signal and bulk data to the log */ + p = (u8 *)(msgptr + 1); + memcpy(p, &signal, signal_len); + p += signal_len; + + /* Append any bulk data */ + for (i = 0; i < UNIFI_MAX_DATA_REFERENCES; i++) { + int len = bulkdata->d[i].data_length; + + /* + * Len here might not be the same as the length in the bulk data slot. + * The slot length will always be even, but len could be odd. + */ + if (len > 0) { + if (bulkdata->d[i].os_data_ptr) { + memcpy(p, bulkdata->d[i].os_data_ptr, len); + } else { + memset(p, 0, len); + } + p += len; + } + } + + /* Add to tail of log queue */ + down(&client->udi_sem); + list_add_tail(&logptr->q, &client->udi_log); + up(&client->udi_sem); + + /* Wake any waiting user process */ + wake_up_interruptible(&client->udi_wq); + + func_exit(); + +} /* sme_native_log_event() */ + + +/* + * --------------------------------------------------------------------------- + * unifi_ta_indicate_protocol + * + * Report that a packet of a particular type has been seen + * + * Arguments: + * drv_priv The device context pointer passed to ta_init. + * protocol The protocol type enum value. + * direction Whether the packet was a tx or rx. + * src_addr The source MAC address from the data packet. + * + * Returns: + * None. + * + * Notes: + * We defer the actual sending to a background workqueue, + * see uf_ta_ind_wq(). + * --------------------------------------------------------------------------- + */ +void +unifi_ta_indicate_protocol(void *ospriv, + CsrWifiRouterCtrlTrafficPacketType packet_type, + CsrWifiRouterCtrlProtocolDirection direction, + const CsrWifiMacAddress *src_addr) +{ + +} /* unifi_ta_indicate_protocol */ + +/* + * --------------------------------------------------------------------------- + * unifi_ta_indicate_sampling + * + * Send the TA sampling information to the SME. + * + * Arguments: + * drv_priv The device context pointer passed to ta_init. + * stats The TA sampling data to send. + * + * Returns: + * None. + * --------------------------------------------------------------------------- + */ +void +unifi_ta_indicate_sampling(void *ospriv, CsrWifiRouterCtrlTrafficStats *stats) +{ + +} /* unifi_ta_indicate_sampling() */ + + +void +unifi_ta_indicate_l4stats(void *ospriv, + u32 rxTcpThroughput, + u32 txTcpThroughput, + u32 rxUdpThroughput, + u32 txUdpThroughput) +{ + +} /* unifi_ta_indicate_l4stats() */ + +/* + * --------------------------------------------------------------------------- + * uf_native_process_udi_signal + * + * Process interesting signals from the UDI interface. + * + * Arguments: + * pcli A pointer to the client instance. + * signal Pointer to the received signal. + * signal_len Size of the signal structure in bytes. + * bulkdata Pointers to any associated bulk data. + * dir Direction of the signal. Zero means from host, + * non-zero means to host. + * + * + * Returns: + * None. + * --------------------------------------------------------------------------- + */ +void +uf_native_process_udi_signal(ul_client_t *pcli, + const u8 *packed_signal, int packed_signal_len, + const bulk_data_param_t *bulkdata, int dir) +{ + +} /* uf_native_process_udi_signal() */ + + +/* + * --------------------------------------------------------------------------- + * sme_native_mlme_event_handler + * + * Callback function to be used as the udi_event_callback when registering + * as a client. + * This function implements a blocking request-reply interface for WEXT. + * To use it, a client specifies this function as the udi_event_callback + * to ul_register_client(). The signal dispatcher in + * unifi_receive_event() will call this function to deliver a signal. + * + * Arguments: + * pcli Pointer to the client instance. + * signal Pointer to the received signal. + * signal_len Size of the signal structure in bytes. + * bulkdata Pointer to structure containing any associated bulk data. + * dir Direction of the signal. Zero means from host, + * non-zero means to host. + * + * Returns: + * None. + * --------------------------------------------------------------------------- + */ +void +sme_native_mlme_event_handler(ul_client_t *pcli, + const u8 *sig_packed, int sig_len, + const bulk_data_param_t *bulkdata, + int dir) +{ + CSR_SIGNAL signal; + int signal_len; + unifi_priv_t *priv = uf_find_instance(pcli->instance); + int id, r; + + func_enter(); + + /* Just a sanity check */ + if ((sig_packed == NULL) || (sig_len <= 0)) { + return; + } + + /* Get the unpacked signal */ + r = read_unpack_signal(sig_packed, &signal); + if (r == 0) { + signal_len = SigGetSize(&signal); + } else { + unifi_error(priv, + "sme_native_mlme_event_handler - Received unknown signal 0x%.4X.\n", + CSR_GET_UINT16_FROM_LITTLE_ENDIAN(sig_packed)); + return; + } + + id = signal.SignalPrimitiveHeader.SignalId; + unifi_trace(priv, UDBG4, "wext - Process signal 0x%.4X\n", id); + + /* + * Take the appropriate action for the signal. + */ + switch (id) { + /* + * Confirm replies from UniFi. + * These all have zero or one CSR_DATAREF member. (FIXME: check this is still true for softmac) + */ + case CSR_MA_PACKET_CONFIRM_ID: + case CSR_MLME_RESET_CONFIRM_ID: + case CSR_MLME_GET_CONFIRM_ID: + case CSR_MLME_SET_CONFIRM_ID: + case CSR_MLME_GET_NEXT_CONFIRM_ID: + case CSR_MLME_POWERMGT_CONFIRM_ID: + case CSR_MLME_SCAN_CONFIRM_ID: + case CSR_MLME_HL_SYNC_CONFIRM_ID: + case CSR_MLME_MEASURE_CONFIRM_ID: + case CSR_MLME_SETKEYS_CONFIRM_ID: + case CSR_MLME_DELETEKEYS_CONFIRM_ID: + case CSR_MLME_HL_SYNC_CANCEL_CONFIRM_ID: + case CSR_MLME_ADD_PERIODIC_CONFIRM_ID: + case CSR_MLME_DEL_PERIODIC_CONFIRM_ID: + case CSR_MLME_ADD_AUTONOMOUS_SCAN_CONFIRM_ID: + case CSR_MLME_DEL_AUTONOMOUS_SCAN_CONFIRM_ID: + case CSR_MLME_SET_PACKET_FILTER_CONFIRM_ID: + case CSR_MLME_STOP_MEASURE_CONFIRM_ID: + case CSR_MLME_PAUSE_AUTONOMOUS_SCAN_CONFIRM_ID: + case CSR_MLME_ADD_TRIGGERED_GET_CONFIRM_ID: + case CSR_MLME_DEL_TRIGGERED_GET_CONFIRM_ID: + case CSR_MLME_ADD_BLACKOUT_CONFIRM_ID: + case CSR_MLME_DEL_BLACKOUT_CONFIRM_ID: + case CSR_MLME_ADD_RX_TRIGGER_CONFIRM_ID: + case CSR_MLME_DEL_RX_TRIGGER_CONFIRM_ID: + case CSR_MLME_CONNECT_STATUS_CONFIRM_ID: + case CSR_MLME_MODIFY_BSS_PARAMETER_CONFIRM_ID: + case CSR_MLME_ADD_TEMPLATE_CONFIRM_ID: + case CSR_MLME_CONFIG_QUEUE_CONFIRM_ID: + case CSR_MLME_ADD_TSPEC_CONFIRM_ID: + case CSR_MLME_DEL_TSPEC_CONFIRM_ID: + case CSR_MLME_START_AGGREGATION_CONFIRM_ID: + case CSR_MLME_STOP_AGGREGATION_CONFIRM_ID: + case CSR_MLME_SM_START_CONFIRM_ID: + case CSR_MLME_LEAVE_CONFIRM_ID: + case CSR_MLME_SET_TIM_CONFIRM_ID: + case CSR_MLME_GET_KEY_SEQUENCE_CONFIRM_ID: + case CSR_MLME_SET_CHANNEL_CONFIRM_ID: + case CSR_MLME_ADD_MULTICAST_ADDRESS_CONFIRM_ID: + case CSR_DEBUG_GENERIC_CONFIRM_ID: + unifi_mlme_copy_reply_and_wakeup_client(pcli, &signal, signal_len, bulkdata); + break; + + case CSR_MLME_CONNECTED_INDICATION_ID: + /* We currently ignore the connected-ind for softmac f/w development */ + unifi_info(priv, "CSR_MLME_CONNECTED_INDICATION_ID ignored\n"); + break; + + default: + break; + } + + func_exit(); +} /* sme_native_mlme_event_handler() */ + + + +/* + * ------------------------------------------------------------------------- + * unifi_reset_state + * + * Ensure that a MAC address has been set. + * Send the MLME-RESET signal. + * This must be called at least once before starting to do any + * network activities (e.g. scan, join etc). + * + * Arguments: + * priv Pointer to device private context struct + * macaddr Pointer to chip MAC address. + * If this is FF:FF:FF:FF:FF:FF it will be replaced + * with the MAC address from the chip. + * set_default_mib 1 if the f/w must reset the MIB to the default values + * 0 otherwise + * + * Returns: + * 0 on success, an error code otherwise. + * ------------------------------------------------------------------------- + */ +int +unifi_reset_state(unifi_priv_t *priv, unsigned char *macaddr, + unsigned char set_default_mib) +{ + int r = 0; + + func_enter(); + +#ifdef CSR_SUPPORT_WEXT + /* The reset clears any 802.11 association. */ + priv->wext_conf.flag_associated = 0; +#endif + + func_exit(); + return r; +} /* unifi_reset_state() */ + |