diff options
Diffstat (limited to 'drivers/staging/csr/io.c')
| -rw-r--r-- | drivers/staging/csr/io.c | 1098 |
1 files changed, 0 insertions, 1098 deletions
diff --git a/drivers/staging/csr/io.c b/drivers/staging/csr/io.c deleted file mode 100644 index f903022b4079..000000000000 --- a/drivers/staging/csr/io.c +++ /dev/null @@ -1,1098 +0,0 @@ -/* - * --------------------------------------------------------------------------- - * FILE: io.c - * - * PURPOSE: - * This file contains routines that the SDIO driver can call when a - * UniFi card is first inserted (or detected) and removed. - * - * When used with sdioemb, the udev scripts (at least on Ubuntu) don't - * recognise a UniFi being added to the system. This is because sdioemb - * does not register itself as a device_driver, it uses it's own code - * to handle insert and remove. - * To have Ubuntu recognise UniFi, edit /etc/udev/rules.d/85-ifupdown.rules - * to change this line: - * SUBSYSTEM=="net", DRIVERS=="?*", GOTO="net_start" - * to these: - * #SUBSYSTEM=="net", DRIVERS=="?*", GOTO="net_start" - * SUBSYSTEM=="net", GOTO="net_start" - * - * Then you can add a stanza to /etc/network/interfaces like this: - * auto eth1 - * iface eth1 inet dhcp - * wpa-conf /etc/wpa_supplicant.conf - * This will then automatically associate when a car dis inserted. - * - * Copyright (C) 2006-2009 by Cambridge Silicon Radio Ltd. - * - * Refer to LICENSE.txt included with this source code for details on - * the license terms. - * - * --------------------------------------------------------------------------- - */ -#include <linux/proc_fs.h> -#include <linux/seq_file.h> - -#include "csr_wifi_hip_unifi.h" -#include "csr_wifi_hip_unifiversion.h" -#include "csr_wifi_hip_unifi_udi.h" /* for unifi_print_status() */ -#include "unifiio.h" -#include "unifi_priv.h" - -/* - * Array of pointers to context structs for unifi devices that are present. - * The index in the array corresponds to the wlan interface number - * (if "wlan*" is used). If "eth*" is used, the eth* numbers are allocated - * after any Ethernet cards. - * - * The Arasan PCI-SDIO controller card supported by this driver has 2 slots, - * hence a max of 2 devices. - */ -static unifi_priv_t *Unifi_instances[MAX_UNIFI_DEVS]; - -/* Array of pointers to netdev objects used by the UniFi driver, as there - * are now many per instance. This is used to determine which netdev events - * are for UniFi as opposed to other net interfaces. - */ -static netInterface_priv_t *Unifi_netdev_instances[MAX_UNIFI_DEVS * CSR_WIFI_NUM_INTERFACES]; - -/* - * Array to hold the status of each unifi device in each slot. - * We only process an insert event when In_use[] for the slot is - * UNIFI_DEV_NOT_IN_USE. Otherwise, it means that the slot is in use or - * we are in the middle of a cleanup (the action on unplug). - */ -#define UNIFI_DEV_NOT_IN_USE 0 -#define UNIFI_DEV_IN_USE 1 -#define UNIFI_DEV_CLEANUP 2 -static int In_use[MAX_UNIFI_DEVS]; -/* - * Mutex to prevent UDI clients to open the character device before the priv - * is created and initialised. - */ -DEFINE_SEMAPHORE(Unifi_instance_mutex); -/* - * When the device is removed, unregister waits on Unifi_cleanup_wq - * until all the UDI clients release the character device. - */ -DECLARE_WAIT_QUEUE_HEAD(Unifi_cleanup_wq); - -#ifdef CONFIG_PROC_FS -/* - * seq_file wrappers for procfile show routines. - */ -static int uf_proc_show(struct seq_file *m, void *v); - -#define UNIFI_DEBUG_TXT_BUFFER (8 * 1024) - -static int uf_proc_open(struct inode *inode, struct file *file) -{ - return single_open_size(file, uf_proc_show, PDE_DATA(inode), - UNIFI_DEBUG_TXT_BUFFER); -} - -static const struct file_operations uf_proc_fops = { - .open = uf_proc_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - -#endif /* CONFIG_PROC_FS */ - -#ifdef CSR_WIFI_RX_PATH_SPLIT - -static CsrResult signal_buffer_init(unifi_priv_t * priv, int size) -{ - int i; - - priv->rxSignalBuffer.writePointer = - priv->rxSignalBuffer.readPointer = 0; - priv->rxSignalBuffer.size = size; - /* Allocating Memory for Signal primitive pointer */ - for(i=0; i<size; i++) - { - priv->rxSignalBuffer.rx_buff[i].sig_len=0; - priv->rxSignalBuffer.rx_buff[i].bufptr = kmalloc(UNIFI_PACKED_SIGBUF_SIZE, GFP_KERNEL); - if (priv->rxSignalBuffer.rx_buff[i].bufptr == NULL) - { - int j; - unifi_error(priv, "signal_buffer_init:Failed to Allocate shared memory for T-H signals \n"); - for(j=0;j<i;j++) - { - priv->rxSignalBuffer.rx_buff[j].sig_len=0; - kfree(priv->rxSignalBuffer.rx_buff[j].bufptr); - priv->rxSignalBuffer.rx_buff[j].bufptr = NULL; - } - return -1; - } - } - return 0; -} - - -static void signal_buffer_free(unifi_priv_t * priv, int size) -{ - int i; - - for(i=0; i<size; i++) - { - priv->rxSignalBuffer.rx_buff[i].sig_len=0; - kfree(priv->rxSignalBuffer.rx_buff[i].bufptr); - priv->rxSignalBuffer.rx_buff[i].bufptr = NULL; - } -} -#endif -/* - * --------------------------------------------------------------------------- - * uf_register_netdev - * - * Registers the network interface, installes the qdisc, - * and registers the inet handler. - * In the porting exercise, register the driver to the network - * stack if necessary. - * - * Arguments: - * priv Pointer to driver context. - * - * Returns: - * O on success, non-zero otherwise. - * - * Notes: - * We will only unregister when the card is ejected, so we must - * only do it once. - * --------------------------------------------------------------------------- - */ -int -uf_register_netdev(unifi_priv_t *priv, int interfaceTag) -{ - int r; - netInterface_priv_t *interfacePriv = priv->interfacePriv[interfaceTag]; - - if (interfaceTag >= CSR_WIFI_NUM_INTERFACES) { - unifi_error(priv, "uf_register_netdev bad interfaceTag\n"); - return -EINVAL; - } - - /* - * Allocates a device number and registers device with the network - * stack. - */ - unifi_trace(priv, UDBG5, "uf_register_netdev: netdev %d - 0x%p\n", - interfaceTag, priv->netdev[interfaceTag]); - r = register_netdev(priv->netdev[interfaceTag]); - if (r) { - unifi_error(priv, "Failed to register net device\n"); - return -EINVAL; - } - - /* The device is registed */ - interfacePriv->netdev_registered = 1; - -#ifdef CSR_SUPPORT_SME - /* - * Register the inet handler; it notifies us for changes in the IP address. - */ - uf_register_inet_notifier(); -#endif /* CSR_SUPPORT_SME */ - - unifi_notice(priv, "unifi%d is %s\n", - priv->instance, priv->netdev[interfaceTag]->name); - - return 0; -} /* uf_register_netdev */ - - -/* - * --------------------------------------------------------------------------- - * uf_unregister_netdev - * - * Unregisters the network interface and the inet handler. - * - * Arguments: - * priv Pointer to driver context. - * - * Returns: - * None. - * - * --------------------------------------------------------------------------- - */ -void -uf_unregister_netdev(unifi_priv_t *priv) -{ - int i=0; - -#ifdef CSR_SUPPORT_SME - /* Unregister the inet handler... */ - uf_unregister_inet_notifier(); -#endif /* CSR_SUPPORT_SME */ - - for (i=0; i<CSR_WIFI_NUM_INTERFACES; i++) { - netInterface_priv_t *interfacePriv = priv->interfacePriv[i]; - if (interfacePriv->netdev_registered) { - unifi_trace(priv, UDBG5, - "uf_unregister_netdev: netdev %d - 0x%p\n", - i, priv->netdev[i]); - - /* ... and the netdev */ - unregister_netdev(priv->netdev[i]); - interfacePriv->netdev_registered = 0; - } - - interfacePriv->interfaceMode = 0; - - /* Enable all queues by default */ - interfacePriv->queueEnabled[0] = 1; - interfacePriv->queueEnabled[1] = 1; - interfacePriv->queueEnabled[2] = 1; - interfacePriv->queueEnabled[3] = 1; - } - - priv->totalInterfaceCount = 0; -} /* uf_unregister_netdev() */ - - -/* - * --------------------------------------------------------------------------- - * register_unifi_sdio - * - * This function is called from the Probe (or equivalent) method of - * the SDIO driver when a UniFi card is detected. - * We allocate the Linux net_device struct, initialise the HIP core - * lib, create the char device nodes and start the userspace helper - * to initialise the device. - * - * Arguments: - * sdio_dev Pointer to SDIO context handle to use for all - * SDIO ops. - * bus_id A small number indicating the SDIO card position on the - * bus. Typically this is the slot number, e.g. 0, 1 etc. - * Valid values are 0 to MAX_UNIFI_DEVS-1. - * dev Pointer to kernel device manager struct. - * - * Returns: - * Pointer to the unifi instance, or NULL on error. - * --------------------------------------------------------------------------- - */ -static unifi_priv_t * -register_unifi_sdio(CsrSdioFunction *sdio_dev, int bus_id, struct device *dev) -{ - unifi_priv_t *priv = NULL; - int r = -1; - CsrResult csrResult; - - if ((bus_id < 0) || (bus_id >= MAX_UNIFI_DEVS)) { - unifi_error(priv, "register_unifi_sdio: invalid device %d\n", - bus_id); - return NULL; - } - - down(&Unifi_instance_mutex); - - if (In_use[bus_id] != UNIFI_DEV_NOT_IN_USE) { - unifi_error(priv, "register_unifi_sdio: device %d is already in use\n", - bus_id); - goto failed0; - } - - - /* Allocate device private and net_device structs */ - priv = uf_alloc_netdevice(sdio_dev, bus_id); - if (priv == NULL) { - unifi_error(priv, "Failed to allocate driver private\n"); - goto failed0; - } - - priv->unifi_device = dev; - - SET_NETDEV_DEV(priv->netdev[0], dev); - - /* We are not ready to send data yet. */ - netif_carrier_off(priv->netdev[0]); - - /* Allocate driver context. */ - priv->card = unifi_alloc_card(priv->sdio, priv); - if (priv->card == NULL) { - unifi_error(priv, "Failed to allocate UniFi driver card struct.\n"); - goto failed1; - } - - if (Unifi_instances[bus_id]) { - unifi_error(priv, "Internal error: instance for slot %d is already taken\n", - bus_id); - } - Unifi_instances[bus_id] = priv; - In_use[bus_id] = UNIFI_DEV_IN_USE; - - /* Save the netdev_priv for use by the netdev event callback mechanism */ - Unifi_netdev_instances[bus_id * CSR_WIFI_NUM_INTERFACES] = netdev_priv(priv->netdev[0]); - - /* Initialise the mini-coredump capture buffers */ - csrResult = unifi_coredump_init(priv->card, (u16)coredump_max); - if (csrResult != CSR_RESULT_SUCCESS) { - unifi_error(priv, "Couldn't allocate mini-coredump buffers\n"); - } - - /* Create the character device nodes */ - r = uf_create_device_nodes(priv, bus_id); - if (r) { - goto failed1; - } - - /* - * We use the slot number as unifi device index. - */ - scnprintf(priv->proc_entry_name, 64, "driver/unifi%d", priv->instance); - /* - * The following complex casting is in place in order to eliminate 64-bit compilation warning - * "cast to/from pointer from/to integer of different size" - */ - if (!proc_create_data(priv->proc_entry_name, 0, NULL, - &uf_proc_fops, (void *)(long)priv->instance)) - { - unifi_error(priv, "unifi: can't create /proc/driver/unifi\n"); - } - - /* Allocate the net_device for interfaces other than 0. */ - { - int i; - priv->totalInterfaceCount =0; - - for(i=1;i<CSR_WIFI_NUM_INTERFACES;i++) - { - if( !uf_alloc_netdevice_for_other_interfaces(priv, i) ) - { - /* error occured while allocating the net_device for interface[i]. The net_device are - * allocated for the interfaces with id<i. Dont worry, all the allocated net_device will - * be releasing chen the control goes to the label failed0. - */ - unifi_error(priv, "Failed to allocate driver private for interface[%d]\n", i); - goto failed0; - } - else - { - SET_NETDEV_DEV(priv->netdev[i], dev); - - /* We are not ready to send data yet. */ - netif_carrier_off(priv->netdev[i]); - - /* Save the netdev_priv for use by the netdev event callback mechanism */ - Unifi_netdev_instances[bus_id * CSR_WIFI_NUM_INTERFACES + i] = netdev_priv(priv->netdev[i]); - } - } - - for(i=0;i<CSR_WIFI_NUM_INTERFACES;i++) - { - netInterface_priv_t *interfacePriv = priv->interfacePriv[i]; - interfacePriv->netdev_registered=0; - } - } - -#ifdef CSR_WIFI_RX_PATH_SPLIT - if (signal_buffer_init(priv, CSR_WIFI_RX_SIGNAL_BUFFER_SIZE)) - { - unifi_error(priv, "Failed to allocate shared memory for T-H signals\n"); - goto failed2; - } - priv->rx_workqueue = create_singlethread_workqueue("rx_workq"); - if (priv->rx_workqueue == NULL) { - unifi_error(priv, "create_singlethread_workqueue failed \n"); - goto failed3; - } - INIT_WORK(&priv->rx_work_struct, rx_wq_handler); -#endif - -#ifdef CSR_WIFI_HIP_DEBUG_OFFLINE - if (log_hip_signals) - { - uf_register_hip_offline_debug(priv); - } -#endif - - /* Initialise the SME related threads and parameters */ - r = uf_sme_init(priv); - if (r) { - unifi_error(priv, "SME initialisation failed.\n"); - goto failed4; - } - - /* - * Run the userspace helper program (unififw) to perform - * the device initialisation. - */ - unifi_trace(priv, UDBG1, "run UniFi helper app...\n"); - r = uf_run_unifihelper(priv); - if (r) { - unifi_notice(priv, "unable to run UniFi helper app\n"); - /* Not a fatal error. */ - } - - up(&Unifi_instance_mutex); - - return priv; - -failed4: -#ifdef CSR_WIFI_HIP_DEBUG_OFFLINE -if (log_hip_signals) -{ - uf_unregister_hip_offline_debug(priv); -} -#endif -#ifdef CSR_WIFI_RX_PATH_SPLIT - flush_workqueue(priv->rx_workqueue); - destroy_workqueue(priv->rx_workqueue); -failed3: - signal_buffer_free(priv, CSR_WIFI_RX_SIGNAL_BUFFER_SIZE); -failed2: -#endif - /* Remove the device nodes */ - uf_destroy_device_nodes(priv); -failed1: - /* Deregister priv->netdev_client */ - ul_deregister_client(priv->netdev_client); - -failed0: - if (priv && priv->card) { - unifi_coredump_free(priv->card); - unifi_free_card(priv->card); - } - if (priv) { - uf_free_netdevice(priv); - } - - up(&Unifi_instance_mutex); - - return NULL; -} /* register_unifi_sdio() */ - - -/* - * --------------------------------------------------------------------------- - * ask_unifi_sdio_cleanup - * - * We can not free our private context, until all the char device - * clients have closed the file handles. unregister_unifi_sdio() which - * is called when a card is removed, waits on Unifi_cleanup_wq until - * the reference count becomes zero. It is time to wake it up now. - * - * Arguments: - * priv Pointer to driver context. - * - * Returns: - * None. - * --------------------------------------------------------------------------- - */ -static void -ask_unifi_sdio_cleanup(unifi_priv_t *priv) -{ - - /* - * Now clear the flag that says the old instance is in use. - * This is used to prevent a new instance being started before old - * one has finshed closing down, for example if bounce makes the card - * appear to be ejected and re-inserted quickly. - */ - In_use[priv->instance] = UNIFI_DEV_CLEANUP; - - unifi_trace(NULL, UDBG5, "ask_unifi_sdio_cleanup: wake up cleanup workqueue.\n"); - wake_up(&Unifi_cleanup_wq); - -} /* ask_unifi_sdio_cleanup() */ - - -/* - * --------------------------------------------------------------------------- - * cleanup_unifi_sdio - * - * Release any resources owned by a unifi instance. - * - * Arguments: - * priv Pointer to the instance to free. - * - * Returns: - * None. - * --------------------------------------------------------------------------- - */ -static void -cleanup_unifi_sdio(unifi_priv_t *priv) -{ - int priv_instance; - int i; - static const CsrWifiMacAddress broadcast_address = {{0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}}; - - /* Remove the device nodes */ - uf_destroy_device_nodes(priv); - - /* Mark this device as gone away by NULLing the entry in Unifi_instances */ - Unifi_instances[priv->instance] = NULL; - - unifi_trace(priv, UDBG5, "cleanup_unifi_sdio: remove_proc_entry\n"); - /* - * Free the children of priv before unifi_free_netdevice() frees - * the priv struct - */ - remove_proc_entry(priv->proc_entry_name, 0); - - - /* Unregister netdev as a client. */ - if (priv->netdev_client) { - unifi_trace(priv, UDBG2, "Netdev client (id:%d s:0x%X) is unregistered\n", - priv->netdev_client->client_id, priv->netdev_client->sender_id); - ul_deregister_client(priv->netdev_client); - } - - /* Destroy the SME related threads and parameters */ - uf_sme_deinit(priv); - -#ifdef CSR_SME_USERSPACE - priv->smepriv = NULL; -#endif - -#ifdef CSR_WIFI_HIP_DEBUG_OFFLINE - if (log_hip_signals) - { - uf_unregister_hip_offline_debug(priv); - } -#endif - - /* Free any packets left in the Rx queues */ - for(i=0;i<CSR_WIFI_NUM_INTERFACES;i++) - { - uf_free_pending_rx_packets(priv, UF_UNCONTROLLED_PORT_Q, broadcast_address, i); - uf_free_pending_rx_packets(priv, UF_CONTROLLED_PORT_Q, broadcast_address, i); - } - /* - * We need to free the resources held by the core, which include tx skbs, - * otherwise we can not call unregister_netdev(). - */ - if (priv->card) { - unifi_trace(priv, UDBG5, "cleanup_unifi_sdio: free card\n"); - unifi_coredump_free(priv->card); - unifi_free_card(priv->card); - priv->card = NULL; - } - - /* - * Unregister the network device. - * We can not unregister the netdev before we release - * all pending packets in the core. - */ - uf_unregister_netdev(priv); - priv->totalInterfaceCount = 0; - - /* Clear the table of registered netdev_priv's */ - for (i = 0; i < CSR_WIFI_NUM_INTERFACES; i++) { - Unifi_netdev_instances[priv->instance * CSR_WIFI_NUM_INTERFACES + i] = NULL; - } - - unifi_trace(priv, UDBG5, "cleanup_unifi_sdio: uf_free_netdevice\n"); - /* - * When uf_free_netdevice() returns, the priv is invalid - * so we need to remember the instance to clear the global flag later. - */ - priv_instance = priv->instance; - -#ifdef CSR_WIFI_RX_PATH_SPLIT - flush_workqueue(priv->rx_workqueue); - destroy_workqueue(priv->rx_workqueue); - signal_buffer_free(priv, CSR_WIFI_RX_SIGNAL_BUFFER_SIZE); -#endif - - /* Priv is freed as part of the net_device */ - uf_free_netdevice(priv); - - /* - * Now clear the flag that says the old instance is in use. - * This is used to prevent a new instance being started before old - * one has finshed closing down, for example if bounce makes the card - * appear to be ejected and re-inserted quickly. - */ - In_use[priv_instance] = UNIFI_DEV_NOT_IN_USE; - - unifi_trace(NULL, UDBG5, "cleanup_unifi_sdio: DONE.\n"); - -} /* cleanup_unifi_sdio() */ - - -/* - * --------------------------------------------------------------------------- - * unregister_unifi_sdio - * - * Call from SDIO driver when it detects that UniFi has been removed. - * - * Arguments: - * bus_id Number of the card that was ejected. - * - * Returns: - * None. - * --------------------------------------------------------------------------- - */ -static void -unregister_unifi_sdio(int bus_id) -{ - unifi_priv_t *priv; - int interfaceTag=0; - u8 reason = CONFIG_IND_EXIT; - - if ((bus_id < 0) || (bus_id >= MAX_UNIFI_DEVS)) { - unifi_error(NULL, "unregister_unifi_sdio: invalid device %d\n", - bus_id); - return; - } - - priv = Unifi_instances[bus_id]; - if (priv == NULL) { - unifi_error(priv, "unregister_unifi_sdio: device %d is not registered\n", - bus_id); - return; - } - - /* Stop the network traffic before freeing the core. */ - for(interfaceTag=0;interfaceTag<priv->totalInterfaceCount;interfaceTag++) - { - netInterface_priv_t *interfacePriv = priv->interfacePriv[interfaceTag]; - if(interfacePriv->netdev_registered) - { - netif_carrier_off(priv->netdev[interfaceTag]); - netif_tx_stop_all_queues(priv->netdev[interfaceTag]); - } - } - -#ifdef CSR_NATIVE_LINUX - /* - * If the unifi thread was started, signal it to stop. This - * should cause any userspace processes with open unifi device to - * close them. - */ - uf_stop_thread(priv, &priv->bh_thread); - - /* Unregister the interrupt handler */ - if (csr_sdio_linux_remove_irq(priv->sdio)) { - unifi_notice(priv, - "csr_sdio_linux_remove_irq failed to talk to card.\n"); - } - - /* Ensure no MLME functions are waiting on a the mlme_event semaphore. */ - uf_abort_mlme(priv); -#endif /* CSR_NATIVE_LINUX */ - - ul_log_config_ind(priv, &reason, sizeof(u8)); - - /* Deregister the UDI hook from the core. */ - unifi_remove_udi_hook(priv->card, logging_handler); - - uf_put_instance(bus_id); - - /* - * Wait until the device is cleaned up. i.e., when all userspace - * processes have closed any open unifi devices. - */ - wait_event(Unifi_cleanup_wq, In_use[bus_id] == UNIFI_DEV_CLEANUP); - unifi_trace(NULL, UDBG5, "Received clean up event\n"); - - /* Now we can free the private context and the char device nodes */ - cleanup_unifi_sdio(priv); - -} /* unregister_unifi_sdio() */ - - -/* - * --------------------------------------------------------------------------- - * uf_find_instance - * - * Find the context structure for a given UniFi device instance. - * - * Arguments: - * inst The instance number to look for. - * - * Returns: - * None. - * --------------------------------------------------------------------------- - */ -unifi_priv_t * -uf_find_instance(int inst) -{ - if ((inst < 0) || (inst >= MAX_UNIFI_DEVS)) { - return NULL; - } - return Unifi_instances[inst]; -} /* uf_find_instance() */ - - -/* - * --------------------------------------------------------------------------- - * uf_find_priv - * - * Find the device instance for a given context structure. - * - * Arguments: - * priv The context structure pointer to look for. - * - * Returns: - * index of instance, -1 otherwise. - * --------------------------------------------------------------------------- - */ -int -uf_find_priv(unifi_priv_t *priv) -{ - int inst; - - if (!priv) { - return -1; - } - - for (inst = 0; inst < MAX_UNIFI_DEVS; inst++) { - if (Unifi_instances[inst] == priv) { - return inst; - } - } - - return -1; -} /* uf_find_priv() */ - -/* - * --------------------------------------------------------------------------- - * uf_find_netdev_priv - * - * Find the device instance for a given netdev context structure. - * - * Arguments: - * priv The context structure pointer to look for. - * - * Returns: - * index of instance, -1 otherwise. - * --------------------------------------------------------------------------- - */ -int -uf_find_netdev_priv(netInterface_priv_t *priv) -{ - int inst; - - if (!priv) { - return -1; - } - - for (inst = 0; inst < MAX_UNIFI_DEVS * CSR_WIFI_NUM_INTERFACES; inst++) { - if (Unifi_netdev_instances[inst] == priv) { - return inst; - } - } - - return -1; -} /* uf_find_netdev_priv() */ - -/* - * --------------------------------------------------------------------------- - * uf_get_instance - * - * Find the context structure for a given UniFi device instance - * and increment the reference count. - * - * Arguments: - * inst The instance number to look for. - * - * Returns: - * Pointer to the instance or NULL if no instance exists. - * --------------------------------------------------------------------------- - */ -unifi_priv_t * -uf_get_instance(int inst) -{ - unifi_priv_t *priv; - - down(&Unifi_instance_mutex); - - priv = uf_find_instance(inst); - if (priv) { - priv->ref_count++; - } - - up(&Unifi_instance_mutex); - - return priv; -} - -/* - * --------------------------------------------------------------------------- - * uf_put_instance - * - * Decrement the context reference count, freeing resources and - * shutting down the driver when the count reaches zero. - * - * Arguments: - * inst The instance number to look for. - * - * Returns: - * Pointer to the instance or NULL if no instance exists. - * --------------------------------------------------------------------------- - */ -void -uf_put_instance(int inst) -{ - unifi_priv_t *priv; - - down(&Unifi_instance_mutex); - - priv = uf_find_instance(inst); - if (priv) { - priv->ref_count--; - if (priv->ref_count == 0) { - ask_unifi_sdio_cleanup(priv); - } - } - - up(&Unifi_instance_mutex); -} - - -/* - * --------------------------------------------------------------------------- - * uf_proc_show - * - * Read method for driver node in /proc/driver/unifi0 - * - * Arguments: - * page - * start - * offset - * count - * eof - * data - * - * Returns: - * None. - * --------------------------------------------------------------------------- - */ -#ifdef CONFIG_PROC_FS -static int uf_proc_show(struct seq_file *m, void *v) -{ - unifi_priv_t *priv; - int i; - - /* - * The following complex casting is in place in order to eliminate - * 64-bit compilation warning "cast to/from pointer from/to integer of - * different size" - */ - priv = uf_find_instance((long)m->private); - if (!priv) - return 0; - - seq_printf(m, "UniFi SDIO Driver: %s %s %s\n", - CSR_WIFI_VERSION, __DATE__, __TIME__); -#ifdef CSR_SME_USERSPACE - seq_puts(m, "SME: CSR userspace "); -#ifdef CSR_SUPPORT_WEXT - seq_puts(m, "with WEXT support\n"); -#else - seq_putc(m, '\n'); -#endif /* CSR_SUPPORT_WEXT */ -#endif /* CSR_SME_USERSPACE */ -#ifdef CSR_NATIVE_LINUX - seq_puts(m, "SME: native\n"); -#endif - -#ifdef CSR_SUPPORT_SME - seq_printf(m, "Firmware (ROM) build:%u, Patch:%u\n", - priv->card_info.fw_build, - priv->sme_versions.firmwarePatch); -#endif - - unifi_print_status(priv->card, m); - - seq_printf(m, "Last dbg str: %s\n", priv->last_debug_string); - - seq_puts(m, "Last dbg16:"); - for (i = 0; i < 8; i++) - seq_printf(m, " %04X", priv->last_debug_word16[i]); - seq_putc(m, '\n'); - seq_puts(m, " "); - for (; i < 16; i++) - seq_printf(m, " %04X", priv->last_debug_word16[i]); - seq_putc(m, '\n'); - return 0; -} -#endif - - - - -static void -uf_lx_suspend(CsrSdioFunction *sdio_ctx) -{ - unifi_priv_t *priv = sdio_ctx->driverData; - unifi_suspend(priv); - - CsrSdioSuspendAcknowledge(sdio_ctx, CSR_RESULT_SUCCESS); -} - -static void -uf_lx_resume(CsrSdioFunction *sdio_ctx) -{ - unifi_priv_t *priv = sdio_ctx->driverData; - unifi_resume(priv); - - CsrSdioResumeAcknowledge(sdio_ctx, CSR_RESULT_SUCCESS); -} - -static int active_slot = MAX_UNIFI_DEVS; -static struct device *os_devices[MAX_UNIFI_DEVS]; - -void -uf_add_os_device(int bus_id, struct device *os_device) -{ - if ((bus_id < 0) || (bus_id >= MAX_UNIFI_DEVS)) { - unifi_error(NULL, "uf_add_os_device: invalid device %d\n", - bus_id); - return; - } - - active_slot = bus_id; - os_devices[bus_id] = os_device; -} /* uf_add_os_device() */ - -void -uf_remove_os_device(int bus_id) -{ - if ((bus_id < 0) || (bus_id >= MAX_UNIFI_DEVS)) { - unifi_error(NULL, "uf_remove_os_device: invalid device %d\n", - bus_id); - return; - } - - active_slot = bus_id; - os_devices[bus_id] = NULL; -} /* uf_remove_os_device() */ - -static void -uf_sdio_inserted(CsrSdioFunction *sdio_ctx) -{ - unifi_priv_t *priv; - - unifi_trace(NULL, UDBG5, "uf_sdio_inserted(0x%p), slot_id=%d, dev=%p\n", - sdio_ctx, active_slot, os_devices[active_slot]); - - priv = register_unifi_sdio(sdio_ctx, active_slot, os_devices[active_slot]); - if (priv == NULL) { - CsrSdioInsertedAcknowledge(sdio_ctx, CSR_RESULT_FAILURE); - return; - } - - sdio_ctx->driverData = priv; - - CsrSdioInsertedAcknowledge(sdio_ctx, CSR_RESULT_SUCCESS); -} /* uf_sdio_inserted() */ - - -static void -uf_sdio_removed(CsrSdioFunction *sdio_ctx) -{ - unregister_unifi_sdio(active_slot); - CsrSdioRemovedAcknowledge(sdio_ctx); -} /* uf_sdio_removed() */ - - -static void -uf_sdio_dsr_handler(CsrSdioFunction *sdio_ctx) -{ - unifi_priv_t *priv = sdio_ctx->driverData; - - unifi_sdio_interrupt_handler(priv->card); -} /* uf_sdio_dsr_handler() */ - -/* - * --------------------------------------------------------------------------- - * uf_sdio_int_handler - * - * Interrupt callback function for SDIO interrupts. - * This is called in kernel context (i.e. not interrupt context). - * We retrieve the unifi context pointer and call the main UniFi - * interrupt handler. - * - * Arguments: - * fdev SDIO context pointer - * - * Returns: - * None. - * --------------------------------------------------------------------------- - */ -static CsrSdioInterruptDsrCallback -uf_sdio_int_handler(CsrSdioFunction *sdio_ctx) -{ - return uf_sdio_dsr_handler; -} /* uf_sdio_int_handler() */ - - - - -static CsrSdioFunctionId unifi_ids[] = -{ - { - .manfId = SDIO_MANF_ID_CSR, - .cardId = SDIO_CARD_ID_UNIFI_3, - .sdioFunction = SDIO_WLAN_FUNC_ID_UNIFI_3, - .sdioInterface = CSR_SDIO_ANY_SDIO_INTERFACE, - }, - { - .manfId = SDIO_MANF_ID_CSR, - .cardId = SDIO_CARD_ID_UNIFI_4, - .sdioFunction = SDIO_WLAN_FUNC_ID_UNIFI_4, - .sdioInterface = CSR_SDIO_ANY_SDIO_INTERFACE, - } -}; - - -/* - * Structure to register with the glue layer. - */ -static CsrSdioFunctionDriver unifi_sdioFunction_drv = -{ - .inserted = uf_sdio_inserted, - .removed = uf_sdio_removed, - .intr = uf_sdio_int_handler, - .suspend = uf_lx_suspend, - .resume = uf_lx_resume, - - .ids = unifi_ids, - .idsCount = sizeof(unifi_ids) / sizeof(unifi_ids[0]) -}; - - -/* - * --------------------------------------------------------------------------- - * uf_sdio_load - * uf_sdio_unload - * - * These functions are called from the main module load and unload - * functions. They perform the appropriate operations for the monolithic - * driver. - * - * Arguments: - * None. - * - * Returns: - * None. - * --------------------------------------------------------------------------- - */ -int __init -uf_sdio_load(void) -{ - CsrResult csrResult; - - csrResult = CsrSdioFunctionDriverRegister(&unifi_sdioFunction_drv); - if (csrResult != CSR_RESULT_SUCCESS) { - unifi_error(NULL, "Failed to register UniFi SDIO driver: csrResult=%d\n", csrResult); - return -EIO; - } - - return 0; -} /* uf_sdio_load() */ - - - -void __exit -uf_sdio_unload(void) -{ - CsrSdioFunctionDriverUnregister(&unifi_sdioFunction_drv); -} /* uf_sdio_unload() */ - |