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path: root/drivers/staging/csr/io.c
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-rw-r--r--drivers/staging/csr/io.c1098
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() */
-