Google Git
Sign in
android / kernel / amlogic-tv-modules / dhd-driver / 848138121a6d66498c71dde25d5c6adb34385126 / . / bcmdhd.101.10.240.x / dbus_usb_linux.c
blob: 10927d89463dd4f42a602835090aba005cb85543 [file] [log] [blame]
/*
* Dongle BUS interface
* USB Linux Implementation
*
* Copyright (C) 1999-2016, Broadcom Corporation
*
* Unless you and Broadcom execute a separate written software license
* agreement governing use of this software, this software is licensed to you
* under the terms of the GNU General Public License version 2 (the "GPL"),
* available at http://www.broadcom.com/licenses/GPLv2.php, with the
* following added to such license:
*
* As a special exception, the copyright holders of this software give you
* permission to link this software with independent modules, and to copy and
* distribute the resulting executable under terms of your choice, provided that
* you also meet, for each linked independent module, the terms and conditions of
* the license of that module. An independent module is a module which is not
* derived from this software. The special exception does not apply to any
* modifications of the software.
*
* Notwithstanding the above, under no circumstances may you combine this
* software in any way with any other Broadcom software provided under a license
* other than the GPL, without Broadcom's express prior written consent.
*
*
* <<Broadcom-WL-IPTag/Open:>>
*
* $Id: dbus_usb_linux.c 564663 2015-06-18 02:34:42Z $
*/
/**
* @file @brief
* This file contains DBUS code that is USB *and* OS (Linux) specific. DBUS is a Broadcom
* proprietary host specific abstraction layer.
*/
#include <typedefs.h>
#include <osl.h>
/**
* DBUS_LINUX_RXDPC is created for router platform performance tuning. A separate thread is created
* to handle USB RX and avoid the call chain getting too long and enhance cache hit rate.
*
* DBUS_LINUX_RXDPC setting is in wlconfig file.
*/
/*
* If DBUS_LINUX_RXDPC is off, spin_lock_bh() for CTFPOOL in
* linux_osl.c has to be changed to spin_lock_irqsave() because
* PKTGET/PKTFREE are no longer in bottom half.
*
* Right now we have another queue rpcq in wl_linux.c. Maybe we
* can eliminate that one to reduce the overhead.
*
* Enabling 2nd EP and DBUS_LINUX_RXDPC causing traffic from
* both EP's to be queued in the same rx queue. If we want
* RXDPC to work with 2nd EP. The EP for RPC call return
* should bypass the dpc and go directly up.
*/
/* #define DBUS_LINUX_RXDPC */
/* Dbus histogram for ntxq, nrxq, dpc parameter tuning */
/* #define DBUS_LINUX_HIST */
#include <usbrdl.h>
#include <bcmendian.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/usb.h>
#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include <linux/random.h>
#include <linux/spinlock.h>
#include <linux/list.h>
#include <asm/uaccess.h>
#include <asm/unaligned.h>
#include <dbus.h>
#include <bcmutils.h>
#include <bcmdevs.h>
#include <linux/usb.h>
#include <usbrdl.h>
#include <linux/firmware.h>
#include <dngl_stats.h>
#include <dhd.h>
#if defined(USBOS_THREAD) || defined(USBOS_TX_THREAD)
/**
* The usb-thread is designed to provide currency on multiprocessors and SMP linux kernels. On the
* dual cores platform, the WLAN driver, without threads, executed only on CPU0. The driver consumed
* almost of 100% on CPU0, while CPU1 remained idle. The behavior was observed on Broadcom's STB.
*
* The WLAN driver consumed most of CPU0 and not CPU1 because tasklets/queues, software irq, and
* hardware irq are executing from CPU0, only. CPU0 became the system's bottle-neck. TPUT is lower
* and system's responsiveness is slower.
*
* To improve system responsiveness and TPUT usb-thread was implemented. The system's threads could
* be scheduled to run on any core. One core could be processing data in the usb-layer and the other
* core could be processing data in the wl-layer.
*
* For further info see [WlThreadAndUsbThread] Twiki.
*/
#include <linux/kthread.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <asm/hardirq.h>
#include <linux/list.h>
#include <linux_osl.h>
#endif /* USBOS_THREAD || USBOS_TX_THREAD */
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0))
#define KERNEL26
#endif
/**
* Starting with the 3.10 kernel release, dynamic PM support for USB is present whenever
* the kernel was built with CONFIG_PM_RUNTIME enabled. The CONFIG_USB_SUSPEND option has
* been eliminated.
*/
#if ((LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 21)) && defined(CONFIG_USB_SUSPEND)) \
|| ((LINUX_VERSION_CODE >= KERNEL_VERSION(3, 10, 0)) && defined(CONFIG_PM_RUNTIME))
/* For USB power management support, see Linux kernel: Documentation/usb/power-management.txt */
#define USB_SUSPEND_AVAILABLE
#endif
/* Define alternate fw/nvram paths used in Android */
#ifdef OEM_ANDROID
#define CONFIG_ANDROID_BCMDHD_FW_PATH "broadcom/dhd/firmware/fw.bin.trx"
#define CONFIG_ANDROID_BCMDHD_NVRAM_PATH "broadcom/dhd/nvrams/nvm.txt"
#endif /* OEM_ANDROID */
static inline int usb_submit_urb_linux(struct urb *urb)
{
#ifdef BCM_MAX_URB_LEN
if (urb && (urb->transfer_buffer_length > BCM_MAX_URB_LEN)) {
DBUSERR(("URB transfer length=%d exceeded %d ra=%p\n", urb->transfer_buffer_length,
BCM_MAX_URB_LEN, __builtin_return_address(0)));
return DBUS_ERR;
}
#endif
#ifdef KERNEL26
return usb_submit_urb(urb, GFP_ATOMIC);
#else
return usb_submit_urb(urb);
#endif
}
#define USB_SUBMIT_URB(urb) usb_submit_urb_linux(urb)
#ifdef KERNEL26
#define USB_ALLOC_URB() usb_alloc_urb(0, GFP_ATOMIC)
#define USB_UNLINK_URB(urb) (usb_kill_urb(urb))
#define USB_FREE_URB(urb) (usb_free_urb(urb))
#define USB_REGISTER() usb_register(&dbus_usbdev)
#define USB_DEREGISTER() usb_deregister(&dbus_usbdev)
#ifdef USB_SUSPEND_AVAILABLE
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 33))
#define USB_AUTOPM_SET_INTERFACE(intf) usb_autopm_set_interface(intf)
#else
#define USB_ENABLE_AUTOSUSPEND(udev) usb_enable_autosuspend(udev)
#define USB_DISABLE_AUTOSUSPEND(udev) usb_disable_autosuspend(udev)
#endif /* LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 33)) */
#define USB_AUTOPM_GET_INTERFACE(intf) usb_autopm_get_interface(intf)
#define USB_AUTOPM_PUT_INTERFACE(intf) usb_autopm_put_interface(intf)
#define USB_AUTOPM_GET_INTERFACE_ASYNC(intf) usb_autopm_get_interface_async(intf)
#define USB_AUTOPM_PUT_INTERFACE_ASYNC(intf) usb_autopm_put_interface_async(intf)
#define USB_MARK_LAST_BUSY(dev) usb_mark_last_busy(dev)
#else /* USB_SUSPEND_AVAILABLE */
#define USB_AUTOPM_GET_INTERFACE(intf) do {} while (0)
#define USB_AUTOPM_PUT_INTERFACE(intf) do {} while (0)
#define USB_AUTOPM_GET_INTERFACE_ASYNC(intf) do {} while (0)
#define USB_AUTOPM_PUT_INTERFACE_ASYNC(intf) do {} while (0)
#define USB_MARK_LAST_BUSY(dev) do {} while (0)
#endif /* USB_SUSPEND_AVAILABLE */
#define USB_CONTROL_MSG(dev, pipe, request, requesttype, value, index, data, size, timeout) \
usb_control_msg((dev), (pipe), (request), (requesttype), (value), (index), \
(data), (size), (timeout))
#define USB_BULK_MSG(dev, pipe, data, len, actual_length, timeout) \
usb_bulk_msg((dev), (pipe), (data), (len), (actual_length), (timeout))
#define USB_BUFFER_ALLOC(dev, size, mem, dma) usb_buffer_alloc(dev, size, mem, dma)
#define USB_BUFFER_FREE(dev, size, data, dma) usb_buffer_free(dev, size, data, dma)
#ifdef WL_URB_ZPKT
#define URB_QUEUE_BULK URB_ZERO_PACKET
#else
#define URB_QUEUE_BULK 0
#endif /* WL_URB_ZPKT */
#define CALLBACK_ARGS struct urb *urb, struct pt_regs *regs
#define CALLBACK_ARGS_DATA urb, regs
#define CONFIGDESC(usb) (&((usb)->actconfig)->desc)
#define IFPTR(usb, idx) ((usb)->actconfig->interface[idx])
#define IFALTS(usb, idx) (IFPTR((usb), (idx))->altsetting[0])
#define IFDESC(usb, idx) IFALTS((usb), (idx)).desc
#define IFEPDESC(usb, idx, ep) (IFALTS((usb), (idx)).endpoint[ep]).desc
#else /* KERNEL26 */
#define USB_ALLOC_URB() usb_alloc_urb(0)
#define USB_UNLINK_URB(urb) usb_unlink_urb(urb)
#define USB_FREE_URB(urb) (usb_free_urb(urb))
#define USB_REGISTER() usb_register(&dbus_usbdev)
#define USB_DEREGISTER() usb_deregister(&dbus_usbdev)
#define USB_AUTOPM_GET_INTERFACE(intf) do {} while (0)
#define USB_AUTOPM_GET_INTERFACE_ASYNC(intf) do {} while (0)
#define USB_AUTOPM_PUT_INTERFACE_ASYNC(intf) do {} while (0)
#define USB_MARK_LAST_BUSY(dev) do {} while (0)
#define USB_CONTROL_MSG(dev, pipe, request, requesttype, value, index, data, size, timeout) \
usb_control_msg((dev), (pipe), (request), (requesttype), (value), (index), \
(data), (size), (timeout))
#define USB_BUFFER_ALLOC(dev, size, mem, dma) kmalloc(size, mem)
#define USB_BUFFER_FREE(dev, size, data, dma) kfree(data)
#ifdef WL_URB_ZPKT
#define URB_QUEUE_BULK USB_QUEUE_BULK|URB_ZERO_PACKET
#else
#define URB_QUEUE_BULK 0
#endif /* WL_URB_ZPKT */
#define CALLBACK_ARGS struct urb *urb
#define CALLBACK_ARGS_DATA urb
#define CONFIGDESC(usb) ((usb)->actconfig)
#define IFPTR(usb, idx) (&(usb)->actconfig->interface[idx])
#define IFALTS(usb, idx) ((usb)->actconfig->interface[idx].altsetting[0])
#define IFDESC(usb, idx) IFALTS((usb), (idx))
#define IFEPDESC(usb, idx, ep) (IFALTS((usb), (idx)).endpoint[ep])
#endif /* KERNEL26 */
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 31))
#define USB_SPEED_SUPER 5
#endif /* #if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 31)) */
#define CONTROL_IF 0
#define BULK_IF 0
#ifdef BCMUSBDEV_COMPOSITE
#define USB_COMPIF_MAX 4
#define USB_CLASS_WIRELESS 0xe0
#define USB_CLASS_MISC 0xef
#define USB_SUBCLASS_COMMON 0x02
#define USB_PROTO_IAD 0x01
#define USB_PROTO_VENDOR 0xff
#define USB_QUIRK_NO_SET_INTF 0x04 /* device does not support set_interface */
#endif /* BCMUSBDEV_COMPOSITE */
#define USB_SYNC_WAIT_TIMEOUT 300 /* ms */
/* Private data kept in skb */
#define SKB_PRIV(skb, idx) (&((void **)skb->cb)[idx])
#define SKB_PRIV_URB(skb) (*(struct urb **)SKB_PRIV(skb, 0))
#ifndef DBUS_USB_RXQUEUE_BATCH_ADD
/* items to add each time within limit */
#define DBUS_USB_RXQUEUE_BATCH_ADD 8
#endif
#ifndef DBUS_USB_RXQUEUE_LOWER_WATERMARK
/* add a new batch req to rx queue when waiting item count reduce to this number */
#define DBUS_USB_RXQUEUE_LOWER_WATERMARK 4
#endif
enum usbos_suspend_state {
USBOS_SUSPEND_STATE_DEVICE_ACTIVE = 0, /* Device is busy, won't allow suspend */
USBOS_SUSPEND_STATE_SUSPEND_PENDING, /* Device is idle, can be suspended */
/* Wating PM to suspend */
USBOS_SUSPEND_STATE_SUSPENDED /* Device suspended */
};
enum usbos_request_state {
USBOS_REQUEST_STATE_UNSCHEDULED = 0, /* USB TX request not scheduled */
USBOS_REQUEST_STATE_SCHEDULED, /* USB TX request given to TX thread */
USBOS_REQUEST_STATE_SUBMITTED /* USB TX request submitted */
};
typedef struct {
uint32 notification;
uint32 reserved;
} intr_t;
typedef struct {
dbus_pub_t *pub;
void *cbarg;
dbus_intf_callbacks_t *cbs;
/* Imported */
struct usb_device *usb; /* USB device pointer from OS */
struct urb *intr_urb; /* URB for interrupt endpoint */
struct list_head req_rxfreeq;
struct list_head req_txfreeq;
struct list_head req_rxpostedq; /* Posted down to USB driver for RX */
struct list_head req_txpostedq; /* Posted down to USB driver for TX */
spinlock_t rxfree_lock; /* Lock for rx free list */
spinlock_t txfree_lock; /* Lock for tx free list */
spinlock_t rxposted_lock; /* Lock for rx posted list */
spinlock_t txposted_lock; /* Lock for tx posted list */
uint rx_pipe, tx_pipe, intr_pipe, rx_pipe2; /* Pipe numbers for USB I/O */
uint rxbuf_len;
struct list_head req_rxpendingq; /* RXDPC: Pending for dpc to send up */
spinlock_t rxpending_lock; /* RXDPC: Lock for rx pending list */
long dpc_pid;
struct semaphore dpc_sem;
struct completion dpc_exited;
int rxpending;
struct urb *ctl_urb;
int ctl_in_pipe, ctl_out_pipe;
struct usb_ctrlrequest ctl_write;
struct usb_ctrlrequest ctl_read;
struct semaphore ctl_lock; /* Lock for CTRL transfers via tx_thread */
#ifdef USBOS_TX_THREAD
enum usbos_request_state ctl_state;
#endif /* USBOS_TX_THREAD */
spinlock_t rxlock; /* Lock for rxq management */
spinlock_t txlock; /* Lock for txq management */
int intr_size; /* Size of interrupt message */
int interval; /* Interrupt polling interval */
intr_t intr; /* Data buffer for interrupt endpoint */
int maxps;
atomic_t txposted;
atomic_t rxposted;
atomic_t txallocated;
atomic_t rxallocated;
bool rxctl_deferrespok; /* Get a response for setup from dongle */
wait_queue_head_t wait;
bool waitdone;
int sync_urb_status;
struct urb *blk_urb; /* Used for downloading embedded image */
#ifdef USBOS_THREAD
spinlock_t ctrl_lock;
spinlock_t usbos_list_lock;
struct list_head usbos_list;
struct list_head usbos_free_list;
atomic_t usbos_list_cnt;
wait_queue_head_t usbos_queue_head;
struct task_struct *usbos_kt;
#endif /* USBOS_THREAD */
#ifdef USBOS_TX_THREAD
spinlock_t usbos_tx_list_lock;
struct list_head usbos_tx_list;
wait_queue_head_t usbos_tx_queue_head;
struct task_struct *usbos_tx_kt;
#endif /* USBOS_TX_THREAD */
struct dma_pool *qtd_pool; /* QTD pool for USB optimization only */
int tx_ep, rx_ep, rx2_ep; /* EPs for USB optimization */
struct usb_device *usb_device; /* USB device for optimization */
} usbos_info_t;
typedef struct urb_req {
void *pkt;
int buf_len;
struct urb *urb;
void *arg;
usbos_info_t *usbinfo;
struct list_head urb_list;
} urb_req_t;
#ifdef USBOS_THREAD
typedef struct usbos_list_entry {
struct list_head list; /* must be first */
void *urb_context;
int urb_length;
int urb_status;
} usbos_list_entry_t;
static void* dbus_usbos_thread_init(usbos_info_t *usbos_info);
static void dbus_usbos_thread_deinit(usbos_info_t *usbos_info);
static void dbus_usbos_dispatch_schedule(CALLBACK_ARGS);
static int dbus_usbos_thread_func(void *data);
#endif /* USBOS_THREAD */
#ifdef USBOS_TX_THREAD
void* dbus_usbos_tx_thread_init(usbos_info_t *usbos_info);
void dbus_usbos_tx_thread_deinit(usbos_info_t *usbos_info);
int dbus_usbos_tx_thread_func(void *data);
#endif /* USBOS_TX_THREAD */
/* Shared Function prototypes */
bool dbus_usbos_dl_cmd(usbos_info_t *usbinfo, uint8 cmd, void *buffer, int buflen);
int dbus_usbos_wait(usbos_info_t *usbinfo, uint16 ms);
bool dbus_usbos_dl_send_bulk(usbos_info_t *usbinfo, void *buffer, int len);
int dbus_write_membytes(usbos_info_t *usbinfo, bool set, uint32 address, uint8 *data, uint size);
/* Local function prototypes */
static void dbus_usbos_send_complete(CALLBACK_ARGS);
static void dbus_usbos_recv_complete(CALLBACK_ARGS);
static int dbus_usbos_errhandler(void *bus, int err);
static int dbus_usbos_state_change(void *bus, int state);
static void dbusos_stop(usbos_info_t *usbos_info);
#ifdef KERNEL26
static int dbus_usbos_probe(struct usb_interface *intf, const struct usb_device_id *id);
static void dbus_usbos_disconnect(struct usb_interface *intf);
#if defined(USB_SUSPEND_AVAILABLE)
static int dbus_usbos_resume(struct usb_interface *intf);
static int dbus_usbos_suspend(struct usb_interface *intf, pm_message_t message);
/* at the moment, used for full dongle host driver only */
static int dbus_usbos_reset_resume(struct usb_interface *intf);
#endif /* USB_SUSPEND_AVAILABLE */
#else /* KERNEL26 */
static void *dbus_usbos_probe(struct usb_device *usb, unsigned int ifnum,
const struct usb_device_id *id);
static void dbus_usbos_disconnect(struct usb_device *usb, void *ptr);
#endif /* KERNEL26 */
/**
* have to disable missing-field-initializers warning as last element {} triggers it
* and different versions of kernel have different number of members so it is impossible
* to specify the initializer. BTW issuing the warning here is bug og GCC as universal
* zero {0} specified in C99 standard as correct way of initialization of struct to all zeros
*/
#if defined(STRICT_GCC_WARNINGS) && defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == \
4 && __GNUC_MINOR__ >= 6))
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wmissing-field-initializers"
#endif
static struct usb_device_id devid_table[] = {
{ USB_DEVICE(BCM_DNGL_VID, 0x0000) }, /* Configurable via register() */
#if defined(BCM_REQUEST_FW)
{ USB_DEVICE(BCM_DNGL_VID, BCM_DNGL_BL_PID_4328) },
{ USB_DEVICE(BCM_DNGL_VID, BCM_DNGL_BL_PID_4322) },
{ USB_DEVICE(BCM_DNGL_VID, BCM_DNGL_BL_PID_4319) },
{ USB_DEVICE(BCM_DNGL_VID, BCM_DNGL_BL_PID_43236) },
{ USB_DEVICE(BCM_DNGL_VID, BCM_DNGL_BL_PID_43143) },
{ USB_DEVICE(BCM_DNGL_VID, BCM_DNGL_BL_PID_43242) },
{ USB_DEVICE(BCM_DNGL_VID, BCM_DNGL_BL_PID_4360) },
{ USB_DEVICE(BCM_DNGL_VID, BCM_DNGL_BL_PID_4350) },
{ USB_DEVICE(BCM_DNGL_VID, BCM_DNGL_BL_PID_43569) },
#endif
#ifdef EXTENDED_VID_PID
EXTENDED_VID_PID,
#endif /* EXTENDED_VID_PID */
{ USB_DEVICE(BCM_DNGL_VID, BCM_DNGL_BDC_PID) }, /* Default BDC */
{ }
};
#if defined(STRICT_GCC_WARNINGS) && defined(__GNUC__) && (__GNUC__ > 4 || (__GNUC__ == \
4 && __GNUC_MINOR__ >= 6))
#pragma GCC diagnostic pop
#endif
MODULE_DEVICE_TABLE(usb, devid_table);
/** functions called by the Linux kernel USB subsystem */
static struct usb_driver dbus_usbdev = {
name: "dbus_usbdev",
probe: dbus_usbos_probe,
disconnect: dbus_usbos_disconnect,
id_table: devid_table,
#if defined(USB_SUSPEND_AVAILABLE)
suspend: dbus_usbos_suspend,
resume: dbus_usbos_resume,
reset_resume: dbus_usbos_reset_resume,
/* Linux USB core will allow autosuspend for devices bound to this driver */
supports_autosuspend: 1
#endif /* USB_SUSPEND_AVAILABLE */
};
/**
* This stores USB info during Linux probe callback since attach() is not called yet at this point
*/
typedef struct {
void *usbos_info;
struct usb_device *usb; /* USB device pointer from OS */
uint rx_pipe; /* Pipe numbers for USB I/O */
uint tx_pipe; /* Pipe numbers for USB I/O */
uint intr_pipe; /* Pipe numbers for USB I/O */
uint rx_pipe2; /* Pipe numbers for USB I/O */
int intr_size; /* Size of interrupt message */
int interval; /* Interrupt polling interval */
bool dldone;
int vid;
int pid;
bool dereged;
bool disc_cb_done;
DEVICE_SPEED device_speed;
enum usbos_suspend_state suspend_state;
struct usb_interface *intf;
} probe_info_t;
/*
* USB Linux dbus_intf_t
*/
static void *dbus_usbos_intf_attach(dbus_pub_t *pub, void *cbarg, dbus_intf_callbacks_t *cbs);
static void dbus_usbos_intf_detach(dbus_pub_t *pub, void *info);
static int dbus_usbos_intf_send_irb(void *bus, dbus_irb_tx_t *txirb);
static int dbus_usbos_intf_recv_irb(void *bus, dbus_irb_rx_t *rxirb);
static int dbus_usbos_intf_recv_irb_from_ep(void *bus, dbus_irb_rx_t *rxirb, uint32 ep_idx);
static int dbus_usbos_intf_cancel_irb(void *bus, dbus_irb_tx_t *txirb);
static int dbus_usbos_intf_send_ctl(void *bus, uint8 *buf, int len);
static int dbus_usbos_intf_recv_ctl(void *bus, uint8 *buf, int len);
static int dbus_usbos_intf_get_attrib(void *bus, dbus_attrib_t *attrib);
static int dbus_usbos_intf_up(void *bus);
static int dbus_usbos_intf_down(void *bus);
static int dbus_usbos_intf_stop(void *bus);
static int dbus_usbos_readreg(void *bus, uint32 regaddr, int datalen, uint32 *value);
extern int dbus_usbos_loopback_tx(void *usbos_info_ptr, int cnt, int size);
int dbus_usbos_writereg(void *bus, uint32 regaddr, int datalen, uint32 data);
static int dbus_usbos_intf_set_config(void *bus, dbus_config_t *config);
static bool dbus_usbos_intf_recv_needed(void *bus);
static void *dbus_usbos_intf_exec_rxlock(void *bus, exec_cb_t cb, struct exec_parms *args);
static void *dbus_usbos_intf_exec_txlock(void *bus, exec_cb_t cb, struct exec_parms *args);
#ifdef BCMUSBDEV_COMPOSITE
static int dbus_usbos_intf_wlan(struct usb_device *usb);
#endif /* BCMUSBDEV_COMPOSITE */
/** functions called by dbus_usb.c */
static dbus_intf_t dbus_usbos_intf = {
.attach = dbus_usbos_intf_attach,
.detach = dbus_usbos_intf_detach,
.up = dbus_usbos_intf_up,
.down = dbus_usbos_intf_down,
.send_irb = dbus_usbos_intf_send_irb,
.recv_irb = dbus_usbos_intf_recv_irb,
.cancel_irb = dbus_usbos_intf_cancel_irb,
.send_ctl = dbus_usbos_intf_send_ctl,
.recv_ctl = dbus_usbos_intf_recv_ctl,
.get_stats = NULL,
.get_attrib = dbus_usbos_intf_get_attrib,
.remove = NULL,
.resume = NULL,
.suspend = NULL,
.stop = dbus_usbos_intf_stop,
.reset = NULL,
.pktget = NULL,
.pktfree = NULL,
.iovar_op = NULL,
.dump = NULL,
.set_config = dbus_usbos_intf_set_config,
.get_config = NULL,
.device_exists = NULL,
.dlneeded = NULL,
.dlstart = NULL,
.dlrun = NULL,
.recv_needed = dbus_usbos_intf_recv_needed,
.exec_rxlock = dbus_usbos_intf_exec_rxlock,
.exec_txlock = dbus_usbos_intf_exec_txlock,
.tx_timer_init = NULL,
.tx_timer_start = NULL,
.tx_timer_stop = NULL,
.sched_dpc = NULL,
.lock = NULL,
.unlock = NULL,
.sched_probe_cb = NULL,
.shutdown = NULL,
.recv_stop = NULL,
.recv_resume = NULL,
.recv_irb_from_ep = dbus_usbos_intf_recv_irb_from_ep,
.readreg = dbus_usbos_readreg
};
static probe_info_t g_probe_info;
static probe_cb_t probe_cb = NULL;
static disconnect_cb_t disconnect_cb = NULL;
static void *probe_arg = NULL;
static void *disc_arg = NULL;
static volatile int loopback_rx_cnt, loopback_tx_cnt;
int loopback_size;
bool is_loopback_pkt(void *buf);
int matches_loopback_pkt(void *buf);
/**
* multiple code paths in this file dequeue a URB request, this function makes sure that it happens
* in a concurrency save manner. Don't call this from a sleepable process context.
*/
static urb_req_t * BCMFASTPATH
dbus_usbos_qdeq(struct list_head *urbreq_q, spinlock_t *lock)
{
unsigned long flags;
urb_req_t *req;
ASSERT(urbreq_q != NULL);
spin_lock_irqsave(lock, flags);
if (list_empty(urbreq_q)) {
req = NULL;
} else {
ASSERT(urbreq_q->next != NULL);
ASSERT(urbreq_q->next != urbreq_q);
#if defined(STRICT_GCC_WARNINGS) && defined(__GNUC__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wcast-qual"
#endif
req = list_entry(urbreq_q->next, urb_req_t, urb_list);
#if defined(STRICT_GCC_WARNINGS) && defined(__GNUC__)
#pragma GCC diagnostic pop
#endif
list_del_init(&req->urb_list);
}
spin_unlock_irqrestore(lock, flags);
return req;
}
static void BCMFASTPATH
dbus_usbos_qenq(struct list_head *urbreq_q, urb_req_t *req, spinlock_t *lock)
{
unsigned long flags;
spin_lock_irqsave(lock, flags);
list_add_tail(&req->urb_list, urbreq_q);
spin_unlock_irqrestore(lock, flags);
}
/**
* multiple code paths in this file remove a URB request from a list, this function makes sure that
* it happens in a concurrency save manner. Don't call this from a sleepable process context.
* Is quite similar to dbus_usbos_qdeq(), I wonder why this function is needed.
*/
static void
dbus_usbos_req_del(urb_req_t *req, spinlock_t *lock)
{
unsigned long flags;
spin_lock_irqsave(lock, flags);
list_del_init(&req->urb_list);
spin_unlock_irqrestore(lock, flags);
}
/**
* Driver requires a pool of URBs to operate. This function is called during
* initialization (attach phase), allocates a number of URBs, and puts them
* on the free (req_rxfreeq and req_txfreeq) queue
*/
static int
dbus_usbos_urbreqs_alloc(usbos_info_t *usbos_info, uint32 count, bool is_rx)
{
int i;
int allocated = 0;
int err = DBUS_OK;
for (i = 0; i < count; i++) {
urb_req_t *req;
req = MALLOC(usbos_info->pub->osh, sizeof(urb_req_t));
if (req == NULL) {
DBUSERR(("%s: MALLOC req failed\n", __FUNCTION__));
err = DBUS_ERR_NOMEM;
goto fail;
}
bzero(req, sizeof(urb_req_t));
req->urb = USB_ALLOC_URB();
if (req->urb == NULL) {
DBUSERR(("%s: USB_ALLOC_URB req->urb failed\n", __FUNCTION__));
err = DBUS_ERR_NOMEM;
goto fail;
}
INIT_LIST_HEAD(&req->urb_list);
if (is_rx) {
#if defined(BCM_RPC_NOCOPY) || defined(BCM_RPC_RXNOCOPY)
/* don't allocate now. Do it on demand */
req->pkt = NULL;
#else
/* pre-allocate buffers never to be released */
req->pkt = MALLOC(usbos_info->pub->osh, usbos_info->rxbuf_len);
if (req->pkt == NULL) {
DBUSERR(("%s: MALLOC req->pkt failed\n", __FUNCTION__));
err = DBUS_ERR_NOMEM;
goto fail;
}
#endif
req->buf_len = usbos_info->rxbuf_len;
dbus_usbos_qenq(&usbos_info->req_rxfreeq, req, &usbos_info->rxfree_lock);
} else {
req->buf_len = 0;
dbus_usbos_qenq(&usbos_info->req_txfreeq, req, &usbos_info->txfree_lock);
}
allocated++;
continue;
fail:
if (req) {
if (is_rx && req->pkt) {
#if defined(BCM_RPC_NOCOPY) || defined(BCM_RPC_RXNOCOPY)
/* req->pkt is NULL in "NOCOPY" mode */
#else
MFREE(usbos_info->pub->osh, req->pkt, req->buf_len);
#endif
}
if (req->urb) {
USB_FREE_URB(req->urb);
}
MFREE(usbos_info->pub->osh, req, sizeof(urb_req_t));
}
break;
}
atomic_add(allocated, is_rx ? &usbos_info->rxallocated : &usbos_info->txallocated);
if (is_rx) {
DBUSTRACE(("%s: add %d (total %d) rx buf, each has %d bytes\n", __FUNCTION__,
allocated, atomic_read(&usbos_info->rxallocated), usbos_info->rxbuf_len));
} else {
DBUSTRACE(("%s: add %d (total %d) tx req\n", __FUNCTION__,
allocated, atomic_read(&usbos_info->txallocated)));
}
return err;
} /* dbus_usbos_urbreqs_alloc */
/** Typically called during detach or when attach failed. Don't call until all URBs unlinked */
static int
dbus_usbos_urbreqs_free(usbos_info_t *usbos_info, bool is_rx)
{
int rtn = 0;
urb_req_t *req;
struct list_head *req_q;
spinlock_t *lock;
if (is_rx) {
req_q = &usbos_info->req_rxfreeq;
lock = &usbos_info->rxfree_lock;
} else {
req_q = &usbos_info->req_txfreeq;
lock = &usbos_info->txfree_lock;
}
while ((req = dbus_usbos_qdeq(req_q, lock)) != NULL) {
if (is_rx) {
if (req->pkt) {
/* We do MFREE instead of PKTFREE because the pkt has been
* converted to native already
*/
MFREE(usbos_info->pub->osh, req->pkt, req->buf_len);
req->pkt = NULL;
req->buf_len = 0;
}
} else {
/* sending req should not be assigned pkt buffer */
ASSERT(req->pkt == NULL);
}
if (req->urb) {
USB_FREE_URB(req->urb);
req->urb = NULL;
}
MFREE(usbos_info->pub->osh, req, sizeof(urb_req_t));
rtn++;
}
return rtn;
} /* dbus_usbos_urbreqs_free */
/**
* called by Linux kernel on URB completion. Upper DBUS layer (dbus_usb.c) has to be notified of
* send completion.
*/
void
dbus_usbos_send_complete(CALLBACK_ARGS)
{
urb_req_t *req = urb->context;
dbus_irb_tx_t *txirb = req->arg;
usbos_info_t *usbos_info = req->usbinfo;
unsigned long flags;
int status = DBUS_OK;
int txposted;
USB_AUTOPM_PUT_INTERFACE_ASYNC(g_probe_info.intf);
spin_lock_irqsave(&usbos_info->txlock, flags);
dbus_usbos_req_del(req, &usbos_info->txposted_lock);
txposted = atomic_dec_return(&usbos_info->txposted);
if (unlikely (txposted < 0)) {
DBUSERR(("%s ERROR: txposted is negative (%d)!!\n", __FUNCTION__, txposted));
}
spin_unlock_irqrestore(&usbos_info->txlock, flags);
if (unlikely (urb->status)) {
status = DBUS_ERR_TXFAIL;
DBUSTRACE(("txfail status %d\n", urb->status));
}
#if defined(BCM_RPC_NOCOPY) || defined(BCM_RPC_RXNOCOPY)
/* sending req should not be assigned pkt buffer */
ASSERT(req->pkt == NULL);
#endif
/* txirb should always be set, except for ZLP. ZLP is reusing this callback function. */
if (txirb != NULL) {
if (txirb->send_buf != NULL) {
MFREE(usbos_info->pub->osh, txirb->send_buf, req->buf_len);
txirb->send_buf = NULL;
req->buf_len = 0;
}
if (likely (usbos_info->cbarg && usbos_info->cbs)) {
if (likely (usbos_info->cbs->send_irb_complete != NULL))
usbos_info->cbs->send_irb_complete(usbos_info->cbarg, txirb, status);
}
}
dbus_usbos_qenq(&usbos_info->req_txfreeq, req, &usbos_info->txfree_lock);
} /* dbus_usbos_send_complete */
/**
* In order to receive USB traffic from the dongle, we need to supply the Linux kernel with a free
* URB that is going to contain received data.
*/
static int BCMFASTPATH
dbus_usbos_recv_urb_submit(usbos_info_t *usbos_info, dbus_irb_rx_t *rxirb, uint32 ep_idx)
{
urb_req_t *req;
int ret = DBUS_OK;
unsigned long flags;
void *p;
uint rx_pipe;
int rxposted;
BCM_REFERENCE(rxposted);
if (!(req = dbus_usbos_qdeq(&usbos_info->req_rxfreeq, &usbos_info->rxfree_lock))) {
DBUSTRACE(("%s No free URB!\n", __FUNCTION__));
return DBUS_ERR_RXDROP;
}
spin_lock_irqsave(&usbos_info->rxlock, flags);
#if defined(BCM_RPC_NOCOPY) || defined(BCM_RPC_RXNOCOPY)
req->pkt = rxirb->pkt = PKTGET(usbos_info->pub->osh, req->buf_len, FALSE);
if (!rxirb->pkt) {
DBUSERR(("%s: PKTGET failed\n", __FUNCTION__));
dbus_usbos_qenq(&usbos_info->req_rxfreeq, req, &usbos_info->rxfree_lock);
ret = DBUS_ERR_RXDROP;
goto fail;
}
/* consider the packet "native" so we don't count it as MALLOCED in the osl */
PKTTONATIVE(usbos_info->pub->osh, req->pkt);
rxirb->buf = NULL;
p = PKTDATA(usbos_info->pub->osh, req->pkt);
#else
if (req->buf_len != usbos_info->rxbuf_len) {
ASSERT(req->pkt);
MFREE(usbos_info->pub->osh, req->pkt, req->buf_len);
DBUSTRACE(("%s: replace rx buff: old len %d, new len %d\n", __FUNCTION__,
req->buf_len, usbos_info->rxbuf_len));
req->buf_len = 0;
req->pkt = MALLOC(usbos_info->pub->osh, usbos_info->rxbuf_len);
if (req->pkt == NULL) {
DBUSERR(("%s: MALLOC req->pkt failed\n", __FUNCTION__));
ret = DBUS_ERR_NOMEM;
goto fail;
}
req->buf_len = usbos_info->rxbuf_len;
}
rxirb->buf = req->pkt;
p = rxirb->buf;
#endif /* defined(BCM_RPC_NOCOPY) */
rxirb->buf_len = req->buf_len;
req->usbinfo = usbos_info;
req->arg = rxirb;
if (ep_idx == 0) {
rx_pipe = usbos_info->rx_pipe;
} else {
rx_pipe = usbos_info->rx_pipe2;
ASSERT(usbos_info->rx_pipe2);
}
/* Prepare the URB */
usb_fill_bulk_urb(req->urb, usbos_info->usb, rx_pipe,
p,
rxirb->buf_len,
(usb_complete_t)dbus_usbos_recv_complete, req);
req->urb->transfer_flags |= URB_QUEUE_BULK;
if ((ret = USB_SUBMIT_URB(req->urb))) {
DBUSERR(("%s USB_SUBMIT_URB failed. status %d\n", __FUNCTION__, ret));
dbus_usbos_qenq(&usbos_info->req_rxfreeq, req, &usbos_info->rxfree_lock);
ret = DBUS_ERR_RXFAIL;
goto fail;
}
rxposted = atomic_inc_return(&usbos_info->rxposted);
dbus_usbos_qenq(&usbos_info->req_rxpostedq, req, &usbos_info->rxposted_lock);
fail:
spin_unlock_irqrestore(&usbos_info->rxlock, flags);
return ret;
} /* dbus_usbos_recv_urb_submit */
/**
* Called by worked thread when a 'receive URB' completed or Linux kernel when it returns a URB to
* this driver.
*/
static void BCMFASTPATH
dbus_usbos_recv_complete_handle(urb_req_t *req, int len, int status)
{
dbus_irb_rx_t *rxirb = req->arg;
usbos_info_t *usbos_info = req->usbinfo;
unsigned long flags;
int rxallocated, rxposted;
int dbus_status = DBUS_OK;
bool killed = (g_probe_info.suspend_state == USBOS_SUSPEND_STATE_SUSPEND_PENDING) ? 1 : 0;
spin_lock_irqsave(&usbos_info->rxlock, flags);
dbus_usbos_req_del(req, &usbos_info->rxposted_lock);
rxposted = atomic_dec_return(&usbos_info->rxposted);
rxallocated = atomic_read(&usbos_info->rxallocated);
spin_unlock_irqrestore(&usbos_info->rxlock, flags);
if ((rxallocated < usbos_info->pub->nrxq) && (!status) &&
(rxposted == DBUS_USB_RXQUEUE_LOWER_WATERMARK)) {
DBUSTRACE(("%s: need more rx buf: rxallocated %d rxposted %d!\n",
__FUNCTION__, rxallocated, rxposted));
dbus_usbos_urbreqs_alloc(usbos_info,
MIN(DBUS_USB_RXQUEUE_BATCH_ADD,
usbos_info->pub->nrxq - rxallocated), TRUE);
}
/* Handle errors */
if (status) {
/*
* Linux 2.4 disconnect: -ENOENT or -EILSEQ for CRC error; rmmod: -ENOENT
* Linux 2.6 disconnect: -EPROTO, rmmod: -ESHUTDOWN
*/
if ((status == -ENOENT && (!killed))|| status == -ESHUTDOWN) {
/* NOTE: unlink() can not be called from URB callback().
* Do not call dbusos_stop() here.
*/
DBUSTRACE(("%s rx error %d\n", __FUNCTION__, status));
dbus_usbos_state_change(usbos_info, DBUS_STATE_DOWN);
} else if (status == -EPROTO) {
DBUSTRACE(("%s rx error %d\n", __FUNCTION__, status));
} else if (killed && (status == -EHOSTUNREACH || status == -ENOENT)) {
/* Device is suspended */
} else {
DBUSTRACE(("%s rx error %d\n", __FUNCTION__, status));
dbus_usbos_errhandler(usbos_info, DBUS_ERR_RXFAIL);
}
/* On error, don't submit more URBs yet */
rxirb->buf = NULL;
rxirb->actual_len = 0;
dbus_status = DBUS_ERR_RXFAIL;
goto fail;
}
/* Make the skb represent the received urb */
rxirb->actual_len = len;
if (rxirb->actual_len < sizeof(uint32)) {
DBUSTRACE(("small pkt len %d, process as ZLP\n", rxirb->actual_len));
dbus_status = DBUS_ERR_RXZLP;
}
fail:
#if defined(BCM_RPC_NOCOPY) || defined(BCM_RPC_RXNOCOPY)
/* detach the packet from the queue */
req->pkt = NULL;
#endif /* BCM_RPC_NOCOPY || BCM_RPC_RXNOCOPY */
if (usbos_info->cbarg && usbos_info->cbs) {
if (usbos_info->cbs->recv_irb_complete) {
usbos_info->cbs->recv_irb_complete(usbos_info->cbarg, rxirb, dbus_status);
}
}
dbus_usbos_qenq(&usbos_info->req_rxfreeq, req, &usbos_info->rxfree_lock);
/* Mark the interface as busy to reset USB autosuspend timer */
USB_MARK_LAST_BUSY(usbos_info->usb);
} /* dbus_usbos_recv_complete_handle */
/** called by Linux kernel when it returns a URB to this driver */
static void
dbus_usbos_recv_complete(CALLBACK_ARGS)
{
#ifdef USBOS_THREAD
dbus_usbos_dispatch_schedule(CALLBACK_ARGS_DATA);
#else /* !USBOS_THREAD */
dbus_usbos_recv_complete_handle(urb->context, urb->actual_length, urb->status);
#endif /* USBOS_THREAD */
}
/**
* If Linux notifies our driver that a control read or write URB has completed, we should notify
* the DBUS layer above us (dbus_usb.c in this case).
*/
static void
dbus_usbos_ctl_complete(usbos_info_t *usbos_info, int type, int urbstatus)
{
int status = DBUS_ERR;
if (usbos_info == NULL)
return;
switch (urbstatus) {
case 0:
status = DBUS_OK;
break;
case -EINPROGRESS:
case -ENOENT:
default:
#ifdef INTR_EP_ENABLE
DBUSERR(("%s:%d fail status %d bus:%d susp:%d intr:%d ctli:%d ctlo:%d\n",
__FUNCTION__, type, urbstatus,
usbos_info->pub->busstate, g_probe_info.suspend_state,
usbos_info->intr_urb_submitted, usbos_info->ctlin_urb_submitted,
usbos_info->ctlout_urb_submitted));
#else
DBUSERR(("%s: failed with status %d\n", __FUNCTION__, urbstatus));
status = DBUS_ERR;
break;
#endif /* INTR_EP_ENABLE */
}
if (usbos_info->cbarg && usbos_info->cbs) {
if (usbos_info->cbs->ctl_complete)
usbos_info->cbs->ctl_complete(usbos_info->cbarg, type, status);
}
}
/** called by Linux */
static void
dbus_usbos_ctlread_complete(CALLBACK_ARGS)
{
usbos_info_t *usbos_info = (usbos_info_t *)urb->context;
ASSERT(urb);
usbos_info = (usbos_info_t *)urb->context;
dbus_usbos_ctl_complete(usbos_info, DBUS_CBCTL_READ, urb->status);
#ifdef USBOS_THREAD
if (usbos_info->rxctl_deferrespok) {
usbos_info->ctl_read.bRequestType = USB_DIR_IN | USB_TYPE_CLASS |
USB_RECIP_INTERFACE;
usbos_info->ctl_read.bRequest = 1;
}
#endif
up(&usbos_info->ctl_lock);
USB_AUTOPM_PUT_INTERFACE_ASYNC(g_probe_info.intf);
}
/** called by Linux */
static void
dbus_usbos_ctlwrite_complete(CALLBACK_ARGS)
{
usbos_info_t *usbos_info = (usbos_info_t *)urb->context;
ASSERT(urb);
usbos_info = (usbos_info_t *)urb->context;
dbus_usbos_ctl_complete(usbos_info, DBUS_CBCTL_WRITE, urb->status);
#ifdef USBOS_TX_THREAD
usbos_info->ctl_state = USBOS_REQUEST_STATE_UNSCHEDULED;
#endif /* USBOS_TX_THREAD */
up(&usbos_info->ctl_lock);
USB_AUTOPM_PUT_INTERFACE_ASYNC(g_probe_info.intf);
}
#ifdef INTR_EP_ENABLE
/** called by Linux */
static void
dbus_usbos_intr_complete(CALLBACK_ARGS)
{
usbos_info_t *usbos_info = (usbos_info_t *)urb->context;
bool killed = (g_probe_info.suspend_state == USBOS_SUSPEND_STATE_SUSPEND_PENDING) ? 1 : 0;
if (usbos_info == NULL || usbos_info->pub == NULL)
return;
if ((urb->status == -ENOENT && (!killed)) || urb->status == -ESHUTDOWN ||
urb->status == -ENODEV) {
dbus_usbos_state_change(usbos_info, DBUS_STATE_DOWN);
}
if (usbos_info->pub->busstate == DBUS_STATE_DOWN) {
DBUSERR(("%s: intr cb when DBUS down, ignoring\n", __FUNCTION__));
return;
}
dbus_usbos_ctl_complete(usbos_info, DBUS_CBINTR_POLL, urb->status);
}
#endif /* INTR_EP_ENABLE */
/**
* when the bus is going to sleep or halt, the Linux kernel requires us to take ownership of our
* URBs again. Multiple code paths in this file require a list of URBs to be cancelled in a
* concurrency save manner.
*/
static void
dbus_usbos_unlink(struct list_head *urbreq_q, spinlock_t *lock)
{
urb_req_t *req;
/* dbus_usbos_recv_complete() adds req back to req_freeq */
while ((req = dbus_usbos_qdeq(urbreq_q, lock)) != NULL) {
ASSERT(req->urb != NULL);
USB_UNLINK_URB(req->urb);
}
}
/** multiple code paths in this file require the bus to stop */
static void
dbus_usbos_cancel_all_urbs(usbos_info_t *usbos_info)
{
int rxposted, txposted;
DBUSTRACE(("%s: unlink all URBs\n", __FUNCTION__));
#ifdef USBOS_TX_THREAD
usbos_info->ctl_state = USBOS_REQUEST_STATE_UNSCHEDULED;
/* Yield the CPU to TX thread so all pending requests are submitted */
while (!list_empty(&usbos_info->usbos_tx_list)) {
wake_up_interruptible(&usbos_info->usbos_tx_queue_head);
OSL_SLEEP(10);
}
#endif /* USBOS_TX_THREAD */
/* tell Linux kernel to cancel a single intr, ctl and blk URB */
if (usbos_info->intr_urb)
USB_UNLINK_URB(usbos_info->intr_urb);
if (usbos_info->ctl_urb)
USB_UNLINK_URB(usbos_info->ctl_urb);
if (usbos_info->blk_urb)
USB_UNLINK_URB(usbos_info->blk_urb);
dbus_usbos_unlink(&usbos_info->req_txpostedq, &usbos_info->txposted_lock);
dbus_usbos_unlink(&usbos_info->req_rxpostedq, &usbos_info->rxposted_lock);
/* Wait until the callbacks for all submitted URBs have been called, because the
* handler needs to know is an USB suspend is in progress.
*/
SPINWAIT((atomic_read(&usbos_info->txposted) != 0 ||
atomic_read(&usbos_info->rxposted) != 0), 10000);
txposted = atomic_read(&usbos_info->txposted);
rxposted = atomic_read(&usbos_info->rxposted);
if (txposted != 0 || rxposted != 0) {
DBUSERR(("%s ERROR: REQs posted, rx=%d tx=%d!\n",
__FUNCTION__, rxposted, txposted));
}
} /* dbus_usbos_cancel_all_urbs */
/** multiple code paths require the bus to stop */
static void
dbusos_stop(usbos_info_t *usbos_info)
{
urb_req_t *req;
int rxposted;
req = NULL;
BCM_REFERENCE(req);
ASSERT(usbos_info);
dbus_usbos_state_change(usbos_info, DBUS_STATE_DOWN);
dbus_usbos_cancel_all_urbs(usbos_info);
#ifdef USBOS_THREAD
/* yield the CPU to rx packet thread */
while (1) {
if (atomic_read(&usbos_info->usbos_list_cnt) <= 0) break;
wake_up_interruptible(&usbos_info->usbos_queue_head);
OSL_SLEEP(3);
}
#endif /* USBOS_THREAD */
rxposted = atomic_read(&usbos_info->rxposted);
if (rxposted > 0) {
DBUSERR(("%s ERROR: rx REQs posted=%d in stop!\n", __FUNCTION__,
rxposted));
}
ASSERT(atomic_read(&usbos_info->txposted) == 0 && rxposted == 0);
} /* dbusos_stop */
#if defined(USB_SUSPEND_AVAILABLE)
/**
* Linux kernel sports a 'USB auto suspend' feature. See: http://lwn.net/Articles/373550/
* The suspend method is called by the Linux kernel to warn the driver that the device is going to
* be suspended. If the driver returns a negative error code, the suspend will be aborted. If the
* driver returns 0, it must cancel all outstanding URBs (usb_kill_urb()) and not submit any more.
*/
static int
dbus_usbos_suspend(struct usb_interface *intf,
pm_message_t message)
{
DBUSERR(("%s suspend state: %d\n", __FUNCTION__, g_probe_info.suspend_state));
/* DHD for full dongle model */
g_probe_info.suspend_state = USBOS_SUSPEND_STATE_SUSPEND_PENDING;
dbus_usbos_state_change((usbos_info_t*)g_probe_info.usbos_info, DBUS_STATE_SLEEP);
dbus_usbos_cancel_all_urbs((usbos_info_t*)g_probe_info.usbos_info);
g_probe_info.suspend_state = USBOS_SUSPEND_STATE_SUSPENDED;
return 0;
}
/**
* The resume method is called to tell the driver that the device has been resumed and the driver
* can return to normal operation. URBs may once more be submitted.
*/
static int dbus_usbos_resume(struct usb_interface *intf)
{
DBUSERR(("%s Device resumed\n", __FUNCTION__));
dbus_usbos_state_change((usbos_info_t*)g_probe_info.usbos_info, DBUS_STATE_UP);
g_probe_info.suspend_state = USBOS_SUSPEND_STATE_DEVICE_ACTIVE;
return 0;
}
/**
* This function is directly called by the Linux kernel, when the suspended device has been reset
* instead of being resumed
*/
static int dbus_usbos_reset_resume(struct usb_interface *intf)
{
DBUSERR(("%s Device reset resumed\n", __FUNCTION__));
/* The device may have lost power, so a firmware download may be required */
dbus_usbos_state_change((usbos_info_t*)g_probe_info.usbos_info, DBUS_STATE_DL_NEEDED);
g_probe_info.suspend_state = USBOS_SUSPEND_STATE_DEVICE_ACTIVE;
return 0;
}
#endif /* USB_SUSPEND_AVAILABLE */
/**
* Called by Linux kernel at initialization time, kernel wants to know if our driver will accept the
* caller supplied USB interface. Note that USB drivers are bound to interfaces, and not to USB
* devices.
*/
#ifdef KERNEL26
#define DBUS_USBOS_PROBE() static int dbus_usbos_probe(struct usb_interface *intf, const struct usb_device_id *id)
#define DBUS_USBOS_DISCONNECT() static void dbus_usbos_disconnect(struct usb_interface *intf)
#else
#define DBUS_USBOS_PROBE() static void * dbus_usbos_probe(struct usb_device *usb, unsigned int ifnum, const struct usb_device_id *id)
#define DBUS_USBOS_DISCONNECT() static void dbus_usbos_disconnect(struct usb_device *usb, void *ptr)
#endif /* KERNEL26 */
DBUS_USBOS_PROBE()
{
int ep;
struct usb_endpoint_descriptor *endpoint;
int ret = 0;
#ifdef KERNEL26
struct usb_device *usb = interface_to_usbdev(intf);
#else
int claimed = 0;
#endif
int num_of_eps;
#ifdef BCMUSBDEV_COMPOSITE
int wlan_if = -1;
bool intr_ep = FALSE;
#endif /* BCMUSBDEV_COMPOSITE */
wifi_adapter_info_t *adapter;
DHD_MUTEX_LOCK();
DBUSERR(("%s: bus num(busnum)=%d, slot num (portnum)=%d\n", __FUNCTION__,
usb->bus->busnum, usb->portnum));
adapter = dhd_wifi_platform_attach_adapter(USB_BUS, usb->bus->busnum,
usb->portnum, WIFI_STATUS_POWER_ON);
if (adapter == NULL) {
DBUSERR(("%s: can't find adapter info for this chip\n", __FUNCTION__));
goto fail;
}
#ifdef BCMUSBDEV_COMPOSITE
wlan_if = dbus_usbos_intf_wlan(usb);
#ifdef KERNEL26
if ((wlan_if >= 0) && (IFPTR(usb, wlan_if) == intf))
#else
if (wlan_if == ifnum)
#endif /* KERNEL26 */
{
#endif /* BCMUSBDEV_COMPOSITE */
g_probe_info.usb = usb;
g_probe_info.dldone = TRUE;
#ifdef BCMUSBDEV_COMPOSITE
} else {
DBUSTRACE(("dbus_usbos_probe: skip probe for non WLAN interface\n"));
ret = BCME_UNSUPPORTED;
goto fail;
}
#endif /* BCMUSBDEV_COMPOSITE */
#ifdef KERNEL26
g_probe_info.intf = intf;
#endif /* KERNEL26 */
#ifdef BCMUSBDEV_COMPOSITE
if (IFDESC(usb, wlan_if).bInterfaceNumber > USB_COMPIF_MAX)
#else
if (IFDESC(usb, CONTROL_IF).bInterfaceNumber)
#endif /* BCMUSBDEV_COMPOSITE */
{
ret = -1;
goto fail;
}
if (id != NULL) {
g_probe_info.vid = id->idVendor;
g_probe_info.pid = id->idProduct;
}
#ifdef KERNEL26
usb_set_intfdata(intf, &g_probe_info);
#endif
/* Check that the device supports only one configuration */
if (usb->descriptor.bNumConfigurations != 1) {
ret = -1;
goto fail;
}
if (usb->descriptor.bDeviceClass != USB_CLASS_VENDOR_SPEC) {
#ifdef BCMUSBDEV_COMPOSITE
if ((usb->descriptor.bDeviceClass != USB_CLASS_MISC) &&
(usb->descriptor.bDeviceClass != USB_CLASS_WIRELESS)) {
#endif /* BCMUSBDEV_COMPOSITE */
ret = -1;
goto fail;
#ifdef BCMUSBDEV_COMPOSITE
}
#endif /* BCMUSBDEV_COMPOSITE */
}
/*
* Only the BDC interface configuration is supported:
* Device class: USB_CLASS_VENDOR_SPEC
* if0 class: USB_CLASS_VENDOR_SPEC
* if0/ep0: control
* if0/ep1: bulk in
* if0/ep2: bulk out (ok if swapped with bulk in)
*/
if (CONFIGDESC(usb)->bNumInterfaces != 1) {
#ifdef BCMUSBDEV_COMPOSITE
if (CONFIGDESC(usb)->bNumInterfaces > USB_COMPIF_MAX) {
#endif /* BCMUSBDEV_COMPOSITE */
ret = -1;
goto fail;
#ifdef BCMUSBDEV_COMPOSITE
}
#endif /* BCMUSBDEV_COMPOSITE */
}
/* Check interface */
#ifndef KERNEL26
#ifdef BCMUSBDEV_COMPOSITE
if (usb_interface_claimed(IFPTR(usb, wlan_if)))
#else
if (usb_interface_claimed(IFPTR(usb, CONTROL_IF)))
#endif /* BCMUSBDEV_COMPOSITE */
{
ret = -1;
goto fail;
}
#endif /* !KERNEL26 */
#ifdef BCMUSBDEV_COMPOSITE
if ((IFDESC(usb, wlan_if).bInterfaceClass != USB_CLASS_VENDOR_SPEC ||
IFDESC(usb, wlan_if).bInterfaceSubClass != 2 ||
IFDESC(usb, wlan_if).bInterfaceProtocol != 0xff) &&
(IFDESC(usb, wlan_if).bInterfaceClass != USB_CLASS_MISC ||
IFDESC(usb, wlan_if).bInterfaceSubClass != USB_SUBCLASS_COMMON ||
IFDESC(usb, wlan_if).bInterfaceProtocol != USB_PROTO_IAD))
#else
if (IFDESC(usb, CONTROL_IF).bInterfaceClass != USB_CLASS_VENDOR_SPEC ||
IFDESC(usb, CONTROL_IF).bInterfaceSubClass != 2 ||
IFDESC(usb, CONTROL_IF).bInterfaceProtocol != 0xff)
#endif /* BCMUSBDEV_COMPOSITE */
{
#ifdef BCMUSBDEV_COMPOSITE
DBUSERR(("%s: invalid control interface: class %d, subclass %d, proto %d\n",
__FUNCTION__,
IFDESC(usb, wlan_if).bInterfaceClass,
IFDESC(usb, wlan_if).bInterfaceSubClass,
IFDESC(usb, wlan_if).bInterfaceProtocol));
#else
DBUSERR(("%s: invalid control interface: class %d, subclass %d, proto %d\n",
__FUNCTION__,
IFDESC(usb, CONTROL_IF).bInterfaceClass,
IFDESC(usb, CONTROL_IF).bInterfaceSubClass,
IFDESC(usb, CONTROL_IF).bInterfaceProtocol));
#endif /* BCMUSBDEV_COMPOSITE */
ret = -1;
goto fail;
}
/* Check control endpoint */
#ifdef BCMUSBDEV_COMPOSITE
endpoint = &IFEPDESC(usb, wlan_if, 0);
#else
endpoint = &IFEPDESC(usb, CONTROL_IF, 0);
#endif /* BCMUSBDEV_COMPOSITE */
if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_INT) {
#ifdef BCMUSBDEV_COMPOSITE
if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) !=
USB_ENDPOINT_XFER_BULK) {
#endif /* BCMUSBDEV_COMPOSITE */
DBUSERR(("%s: invalid control endpoint %d\n",
__FUNCTION__, endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK));
ret = -1;
goto fail;
#ifdef BCMUSBDEV_COMPOSITE
}
#endif /* BCMUSBDEV_COMPOSITE */
}
#ifdef BCMUSBDEV_COMPOSITE
if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT) {
#endif /* BCMUSBDEV_COMPOSITE */
g_probe_info.intr_pipe =
usb_rcvintpipe(usb, endpoint->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK);
#ifdef BCMUSBDEV_COMPOSITE
intr_ep = TRUE;
}
#endif /* BCMUSBDEV_COMPOSITE */
#ifndef KERNEL26
/* Claim interface */
#ifdef BCMUSBDEV_COMPOSITE
usb_driver_claim_interface(&dbus_usbdev, IFPTR(usb, wlan_if), &g_probe_info);
#else
usb_driver_claim_interface(&dbus_usbdev, IFPTR(usb, CONTROL_IF), &g_probe_info);
#endif /* BCMUSBDEV_COMPOSITE */
claimed = 1;
#endif /* !KERNEL26 */
g_probe_info.rx_pipe = 0;
g_probe_info.rx_pipe2 = 0;
g_probe_info.tx_pipe = 0;
#ifdef BCMUSBDEV_COMPOSITE
if (intr_ep)
ep = 1;
else
ep = 0;
num_of_eps = IFDESC(usb, wlan_if).bNumEndpoints - 1;
#else
num_of_eps = IFDESC(usb, BULK_IF).bNumEndpoints - 1;
#endif /* BCMUSBDEV_COMPOSITE */
if ((num_of_eps != 2) && (num_of_eps != 3)) {
#ifdef BCMUSBDEV_COMPOSITE
if (num_of_eps > 7)
#endif /* BCMUSBDEV_COMPOSITE */
ASSERT(0);
}
/* Check data endpoints and get pipes */
#ifdef BCMUSBDEV_COMPOSITE
for (; ep <= num_of_eps; ep++)
#else
for (ep = 1; ep <= num_of_eps; ep++)
#endif /* BCMUSBDEV_COMPOSITE */
{
#ifdef BCMUSBDEV_COMPOSITE
endpoint = &IFEPDESC(usb, wlan_if, ep);
#else
endpoint = &IFEPDESC(usb, BULK_IF, ep);
#endif /* BCMUSBDEV_COMPOSITE */
if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) !=
USB_ENDPOINT_XFER_BULK) {
DBUSERR(("%s: invalid data endpoint %d\n",
__FUNCTION__, ep));
ret = -1;
goto fail;
}
if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) {
/* direction: dongle->host */
if (!g_probe_info.rx_pipe) {
g_probe_info.rx_pipe = usb_rcvbulkpipe(usb,
(endpoint->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK));
} else {
g_probe_info.rx_pipe2 = usb_rcvbulkpipe(usb,
(endpoint->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK));
}
} else
g_probe_info.tx_pipe = usb_sndbulkpipe(usb, (endpoint->bEndpointAddress &
USB_ENDPOINT_NUMBER_MASK));
}
/* Allocate interrupt URB and data buffer */
/* RNDIS says 8-byte intr, our old drivers used 4-byte */
#ifdef BCMUSBDEV_COMPOSITE
g_probe_info.intr_size = (IFEPDESC(usb, wlan_if, 0).wMaxPacketSize == 16) ? 8 : 4;
g_probe_info.interval = IFEPDESC(usb, wlan_if, 0).bInterval;
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 21))
usb->quirks |= USB_QUIRK_NO_SET_INTF;
#endif
#else
g_probe_info.intr_size = (IFEPDESC(usb, CONTROL_IF, 0).wMaxPacketSize == 16) ? 8 : 4;
g_probe_info.interval = IFEPDESC(usb, CONTROL_IF, 0).bInterval;
#endif /* BCMUSBDEV_COMPOSITE */
#ifndef KERNEL26
/* usb_fill_int_urb does the interval decoding in 2.6 */
if (usb->speed == USB_SPEED_HIGH)
g_probe_info.interval = 1 << (g_probe_info.interval - 1);
#endif
if (usb->speed == USB_SPEED_SUPER) {
g_probe_info.device_speed = SUPER_SPEED;
DBUSERR(("super speed device detected\n"));
} else if (usb->speed == USB_SPEED_HIGH) {
g_probe_info.device_speed = HIGH_SPEED;
DBUSERR(("high speed device detected\n"));
} else {
g_probe_info.device_speed = FULL_SPEED;
DBUSERR(("full speed device detected\n"));
}
if (g_probe_info.dereged == FALSE && probe_cb) {
disc_arg = probe_cb(probe_arg, "", USB_BUS, usb->bus->busnum, usb->portnum, 0);
}
g_probe_info.disc_cb_done = FALSE;
#ifdef KERNEL26
intf->needs_remote_wakeup = 1;
#endif /* KERNEL26 */
DHD_MUTEX_UNLOCK();
/* Success */
#ifdef KERNEL26
return DBUS_OK;
#else
usb_inc_dev_use(usb);
return &g_probe_info;
#endif
fail:
printf("%s: Exit ret=%d\n", __FUNCTION__, ret);
#ifdef BCMUSBDEV_COMPOSITE
if (ret != BCME_UNSUPPORTED)
#endif /* BCMUSBDEV_COMPOSITE */
DBUSERR(("%s: failed with errno %d\n", __FUNCTION__, ret));
#ifndef KERNEL26
if (claimed)
#ifdef BCMUSBDEV_COMPOSITE
usb_driver_release_interface(&dbus_usbdev, IFPTR(usb, wlan_if));
#else
usb_driver_release_interface(&dbus_usbdev, IFPTR(usb, CONTROL_IF));
#endif /* BCMUSBDEV_COMPOSITE */
#endif /* !KERNEL26 */
DHD_MUTEX_UNLOCK();
#ifdef KERNEL26
usb_set_intfdata(intf, NULL);
return ret;
#else
return NULL;
#endif
} /* dbus_usbos_probe */
/** Called by Linux kernel, is the counter part of dbus_usbos_probe() */
DBUS_USBOS_DISCONNECT()
{
#ifdef KERNEL26
struct usb_device *usb = interface_to_usbdev(intf);
probe_info_t *probe_usb_init_data = usb_get_intfdata(intf);
#else
probe_info_t *probe_usb_init_data = (probe_info_t *) ptr;
#endif
usbos_info_t *usbos_info;
DHD_MUTEX_LOCK();
DBUSERR(("%s: bus num(busnum)=%d, slot num (portnum)=%d\n", __FUNCTION__,
usb->bus->busnum, usb->portnum));
if (probe_usb_init_data) {
usbos_info = (usbos_info_t *) probe_usb_init_data->usbos_info;
if (usbos_info) {
if ((probe_usb_init_data->dereged == FALSE) && disconnect_cb && disc_arg) {
disconnect_cb(disc_arg);
disc_arg = NULL;
probe_usb_init_data->disc_cb_done = TRUE;
}
}
}
if (usb) {
#ifndef KERNEL26
#ifdef BCMUSBDEV_COMPOSITE
usb_driver_release_interface(&dbus_usbdev, IFPTR(usb, wlan_if));
#else
usb_driver_release_interface(&dbus_usbdev, IFPTR(usb, CONTROL_IF));
#endif /* BCMUSBDEV_COMPOSITE */
usb_dec_dev_use(usb);
#endif /* !KERNEL26 */
}
DHD_MUTEX_UNLOCK();
} /* dbus_usbos_disconnect */
#define LOOPBACK_PKT_START 0xBABE1234
bool is_loopback_pkt(void *buf)
{
uint32 *buf_ptr = (uint32 *) buf;
if (*buf_ptr == LOOPBACK_PKT_START)
return TRUE;
return FALSE;
}
int matches_loopback_pkt(void *buf)
{
int i, j;
unsigned char *cbuf = (unsigned char *) buf;
for (i = 4; i < loopback_size; i++) {
if (cbuf[i] != (i % 256)) {
printf("%s: mismatch at i=%d %d : ", __FUNCTION__, i, cbuf[i]);
for (j = i; ((j < i+ 16) && (j < loopback_size)); j++) {
printf("%d ", cbuf[j]);
}
printf("\n");
return 0;
}
}
loopback_rx_cnt++;
return 1;
}
int dbus_usbos_loopback_tx(void *usbos_info_ptr, int cnt, int size)
{
usbos_info_t *usbos_info = (usbos_info_t *) usbos_info_ptr;
unsigned char *buf;
int j;
void* p = NULL;
int rc, last_rx_cnt;
int tx_failed_cnt;
int max_size = 1650;
int usb_packet_size = 512;
int min_packet_size = 10;
if (size % usb_packet_size == 0) {
size = size - 1;
DBUSERR(("%s: overriding size=%d \n", __FUNCTION__, size));
}
if (size < min_packet_size) {
size = min_packet_size;
DBUSERR(("%s: overriding size=%d\n", __FUNCTION__, min_packet_size));
}
if (size > max_size) {
size = max_size;
DBUSERR(("%s: overriding size=%d\n", __FUNCTION__, max_size));
}
loopback_tx_cnt = 0;
loopback_rx_cnt = 0;
tx_failed_cnt = 0;
loopback_size = size;
while (loopback_tx_cnt < cnt) {
uint32 *x;
int pkt_size = loopback_size;
p = PKTGET(usbos_info->pub->osh, pkt_size, TRUE);
if (p == NULL) {
DBUSERR(("%s:%d Failed to allocate packet sz=%d\n",
__FUNCTION__, __LINE__, pkt_size));
return BCME_ERROR;
}
x = (uint32*) PKTDATA(usbos_info->pub->osh, p);
*x = LOOPBACK_PKT_START;
buf = (unsigned char*) x;
for (j = 4; j < pkt_size; j++) {
buf[j] = j % 256;
}
rc = dbus_send_buf(usbos_info->pub, buf, pkt_size, p);
if (rc != BCME_OK) {
DBUSERR(("%s:%d Freeing packet \n", __FUNCTION__, __LINE__));
PKTFREE(usbos_info->pub->osh, p, TRUE);
dbus_usbos_wait(usbos_info, 1);
tx_failed_cnt++;
} else {
loopback_tx_cnt++;
tx_failed_cnt = 0;
}
if (tx_failed_cnt == 5) {
DBUSERR(("%s : Failed to send loopback packets cnt=%d loopback_tx_cnt=%d\n",
__FUNCTION__, cnt, loopback_tx_cnt));
break;
}
}
printf("Transmitted %d loopback packets of size %d\n", loopback_tx_cnt, loopback_size);
last_rx_cnt = loopback_rx_cnt;
while (loopback_rx_cnt < loopback_tx_cnt) {
dbus_usbos_wait(usbos_info, 1);
if (loopback_rx_cnt <= last_rx_cnt) {
DBUSERR(("%s: Matched rx cnt stuck at %d \n", __FUNCTION__, last_rx_cnt));
return BCME_ERROR;
}
last_rx_cnt = loopback_rx_cnt;
}
printf("Received %d loopback packets of size %d\n", loopback_tx_cnt, loopback_size);
return BCME_OK;
} /* dbus_usbos_loopback_tx */
/**
* Higher layer (dbus_usb.c) wants to transmit an I/O Request Block
* @param[in] txirb txirb->pkt, if non-zero, contains a single or a chain of packets
*/
static int
dbus_usbos_intf_send_irb(void *bus, dbus_irb_tx_t *txirb)
{
usbos_info_t *usbos_info = (usbos_info_t *) bus;
urb_req_t *req, *req_zlp = NULL;
int ret = DBUS_OK;
unsigned long flags;
void *pkt;
uint32 buffer_length;
uint8 *buf;
if ((usbos_info == NULL) || !usbos_info->tx_pipe) {
return DBUS_ERR;
}
if (txirb->pkt != NULL) {
buffer_length = pkttotlen(usbos_info->pub->osh, txirb->pkt);
/* In case of multiple packets the values below may be overwritten */
txirb->send_buf = NULL;
buf = PKTDATA(usbos_info->pub->osh, txirb->pkt);
} else { /* txirb->buf != NULL */
ASSERT(txirb->buf != NULL);
ASSERT(txirb->send_buf == NULL);
buffer_length = txirb->len;
buf = txirb->buf;
}
if (!(req = dbus_usbos_qdeq(&usbos_info->req_txfreeq, &usbos_info->txfree_lock))) {
DBUSERR(("%s No free URB!\n", __FUNCTION__));
return DBUS_ERR_TXDROP;
}
/* If not using standard Linux kernel functionality for handling Zero Length Packet(ZLP),
* the dbus needs to generate ZLP when length is multiple of MaxPacketSize.
*/
#ifndef WL_URB_ZPKT
if (!(buffer_length % usbos_info->maxps)) {
if (!(req_zlp =
dbus_usbos_qdeq(&usbos_info->req_txfreeq, &usbos_info->txfree_lock))) {
DBUSERR(("%s No free URB for ZLP!\n", __FUNCTION__));
dbus_usbos_qenq(&usbos_info->req_txfreeq, req, &usbos_info->txfree_lock);
return DBUS_ERR_TXDROP;
}
/* No txirb, so that dbus_usbos_send_complete can differentiate between
* DATA and ZLP.
*/
req_zlp->arg = NULL;
req_zlp->usbinfo = usbos_info;
req_zlp->buf_len = 0;
usb_fill_bulk_urb(req_zlp->urb, usbos_info->usb, usbos_info->tx_pipe, NULL,
0, (usb_complete_t)dbus_usbos_send_complete, req_zlp);
req_zlp->urb->transfer_flags |= URB_QUEUE_BULK;
}
#endif /* !WL_URB_ZPKT */
#ifndef USBOS_TX_THREAD
/* Disable USB autosuspend until this request completes, request USB resume if needed.
* Because this call runs asynchronously, there is no guarantee the bus is resumed before
* the URB is submitted, and the URB might be dropped. Use USBOS_TX_THREAD to avoid
* this.
*/
USB_AUTOPM_GET_INTERFACE_ASYNC(g_probe_info.intf);
#endif /* !USBOS_TX_THREAD */
spin_lock_irqsave(&usbos_info->txlock, flags);
req->arg = txirb;
req->usbinfo = usbos_info;
req->buf_len = 0;
/* Prepare the URB */
if (txirb->pkt != NULL) {
uint32 pktlen;
uint8 *transfer_buf;
/* For multiple packets, allocate contiguous buffer and copy packet data to it */
if (PKTNEXT(usbos_info->pub->osh, txirb->pkt)) {
transfer_buf = MALLOC(usbos_info->pub->osh, buffer_length);
if (!transfer_buf) {
ret = DBUS_ERR_TXDROP;
DBUSERR(("fail to alloc to usb buffer\n"));
goto fail;
}
pkt = txirb->pkt;
txirb->send_buf = transfer_buf;
req->buf_len = buffer_length;
while (pkt) {
pktlen = PKTLEN(usbos_info->pub->osh, pkt);
bcopy(PKTDATA(usbos_info->pub->osh, pkt), transfer_buf, pktlen);
transfer_buf += pktlen;
pkt = PKTNEXT(usbos_info->pub->osh, pkt);
}
ASSERT(((uint8 *) txirb->send_buf + buffer_length) == transfer_buf);
/* Overwrite buf pointer with pointer to allocated contiguous transfer_buf
*/
buf = txirb->send_buf;
}
}
usb_fill_bulk_urb(req->urb, usbos_info->usb, usbos_info->tx_pipe, buf,
buffer_length, (usb_complete_t)dbus_usbos_send_complete, req);
req->urb->transfer_flags |= URB_QUEUE_BULK;
#ifdef USBOS_TX_THREAD
/* Enqueue TX request, the TX thread will resume the bus if needed and submit
* it asynchronously
*/
dbus_usbos_qenq(&usbos_info->usbos_tx_list, req, &usbos_info->usbos_tx_list_lock);
if (req_zlp != NULL) {
dbus_usbos_qenq(&usbos_info->usbos_tx_list, req_zlp,
&usbos_info->usbos_tx_list_lock);
}
spin_unlock_irqrestore(&usbos_info->txlock, flags);
wake_up_interruptible(&usbos_info->usbos_tx_queue_head);
return DBUS_OK;
#else
if ((ret = USB_SUBMIT_URB(req->urb))) {
ret = DBUS_ERR_TXDROP;
goto fail;
}
dbus_usbos_qenq(&usbos_info->req_txpostedq, req, &usbos_info->txposted_lock);
atomic_inc(&usbos_info->txposted);
if (req_zlp != NULL) {
if ((ret = USB_SUBMIT_URB(req_zlp->urb))) {
DBUSERR(("failed to submit ZLP URB!\n"));
ASSERT(0);
ret = DBUS_ERR_TXDROP;
goto fail2;
}
dbus_usbos_qenq(&usbos_info->req_txpostedq, req_zlp, &usbos_info->txposted_lock);
/* Also increment txposted for zlp packet, as it will be decremented in
* dbus_usbos_send_complete()
*/
atomic_inc(&usbos_info->txposted);
}
spin_unlock_irqrestore(&usbos_info->txlock, flags);
return DBUS_OK;
#endif /* USBOS_TX_THREAD */
fail:
if (txirb->send_buf != NULL) {
MFREE(usbos_info->pub->osh, txirb->send_buf, req->buf_len);
txirb->send_buf = NULL;
req->buf_len = 0;
}
dbus_usbos_qenq(&usbos_info->req_txfreeq, req, &usbos_info->txfree_lock);
#ifndef USBOS_TX_THREAD
fail2:
#endif
if (req_zlp != NULL) {
dbus_usbos_qenq(&usbos_info->req_txfreeq, req_zlp, &usbos_info->txfree_lock);
}
spin_unlock_irqrestore(&usbos_info->txlock, flags);
#ifndef USBOS_TX_THREAD
USB_AUTOPM_PUT_INTERFACE_ASYNC(g_probe_info.intf);
#endif /* !USBOS_TX_THREAD */
return ret;
} /* dbus_usbos_intf_send_irb */
/** Higher layer (dbus_usb.c) recycles a received (and used) packet. */
static int
dbus_usbos_intf_recv_irb(void *bus, dbus_irb_rx_t *rxirb)
{
usbos_info_t *usbos_info = (usbos_info_t *) bus;
int ret = DBUS_OK;
if (usbos_info == NULL)
return DBUS_ERR;
ret = dbus_usbos_recv_urb_submit(usbos_info, rxirb, 0);
return ret;
}
static int
dbus_usbos_intf_recv_irb_from_ep(void *bus, dbus_irb_rx_t *rxirb, uint32 ep_idx)
{
usbos_info_t *usbos_info = (usbos_info_t *) bus;
int ret = DBUS_OK;
if (usbos_info == NULL)
return DBUS_ERR;
#ifdef INTR_EP_ENABLE
/* By specifying the ep_idx value of 0xff, the cdc layer is asking to
* submit an interrupt URB
*/
if (rxirb == NULL && ep_idx == 0xff) {
/* submit intr URB */
if ((ret = USB_SUBMIT_URB(usbos_info->intr_urb)) < 0) {
DBUSERR(("%s intr USB_SUBMIT_URB failed, status %d\n",
__FUNCTION__, ret));
}
return ret;
}
#else
if (rxirb == NULL) {
return DBUS_ERR;
}
#endif /* INTR_EP_ENABLE */
ret = dbus_usbos_recv_urb_submit(usbos_info, rxirb, ep_idx);
return ret;
}
/** Higher layer (dbus_usb.c) want to cancel an IRB */
static int
dbus_usbos_intf_cancel_irb(void *bus, dbus_irb_tx_t *txirb)
{
usbos_info_t *usbos_info = (usbos_info_t *) bus;
if (usbos_info == NULL)
return DBUS_ERR;
return DBUS_ERR;
}
/** Only one CTL transfer can be pending at any time. This function may block. */
static int
dbus_usbos_intf_send_ctl(void *bus, uint8 *buf, int len)
{
usbos_info_t *usbos_info = (usbos_info_t *) bus;
uint16 size;
#ifndef USBOS_TX_THREAD
int status;
#endif /* USBOS_TX_THREAD */
if ((usbos_info == NULL) || (buf == NULL) || (len == 0))
return DBUS_ERR;
if (usbos_info->ctl_urb == NULL)
return DBUS_ERR;
/* Block until a pending CTL transfer has completed */
if (down_interruptible(&usbos_info->ctl_lock) != 0) {
return DBUS_ERR_TXCTLFAIL;
}
#ifdef USBOS_TX_THREAD
ASSERT(usbos_info->ctl_state == USBOS_REQUEST_STATE_UNSCHEDULED);
#else
/* Disable USB autosuspend until this request completes, request USB resume if needed.
* Because this call runs asynchronously, there is no guarantee the bus is resumed before
* the URB is submitted, and the URB might be dropped. Use USBOS_TX_THREAD to avoid
* this.
*/
USB_AUTOPM_GET_INTERFACE_ASYNC(g_probe_info.intf);
#endif /* USBOS_TX_THREAD */
size = len;
usbos_info->ctl_write.wLength = cpu_to_le16p(&size);
usbos_info->ctl_urb->transfer_buffer_length = size;
usb_fill_control_urb(usbos_info->ctl_urb,
usbos_info->usb,
usb_sndctrlpipe(usbos_info->usb, 0),
(unsigned char *) &usbos_info->ctl_write,
buf, size, (usb_complete_t)dbus_usbos_ctlwrite_complete, usbos_info);
#ifdef USBOS_TX_THREAD
/* Enqueue CTRL request for transmission by the TX thread. The
* USB bus will first be resumed if needed.
*/
usbos_info->ctl_state = USBOS_REQUEST_STATE_SCHEDULED;
wake_up_interruptible(&usbos_info->usbos_tx_queue_head);
#else
status = USB_SUBMIT_URB(usbos_info->ctl_urb);
if (status < 0) {
DBUSERR(("%s: usb_submit_urb failed %d\n", __FUNCTION__, status));
up(&usbos_info->ctl_lock);
USB_AUTOPM_PUT_INTERFACE_ASYNC(g_probe_info.intf);
return DBUS_ERR_TXCTLFAIL;
}
#endif /* USBOS_TX_THREAD */
return DBUS_OK;
} /* dbus_usbos_intf_send_ctl */
/** This function does not seem to be called by anyone, including dbus_usb.c */
static int
dbus_usbos_intf_recv_ctl(void *bus, uint8 *buf, int len)
{
usbos_info_t *usbos_info = (usbos_info_t *) bus;
int status;
uint16 size;
if ((usbos_info == NULL) || (buf == NULL) || (len == 0))
return DBUS_ERR;
if (usbos_info->ctl_urb == NULL)
return DBUS_ERR;
/* Block until a pending CTRL transfer has completed */
if (down_interruptible(&usbos_info->ctl_lock) != 0) {
return DBUS_ERR_TXCTLFAIL;
}
/* Disable USB autosuspend until this request completes, request USB resume if needed. */
USB_AUTOPM_GET_INTERFACE_ASYNC(g_probe_info.intf);
size = len;
usbos_info->ctl_read.wLength = cpu_to_le16p(&size);
usbos_info->ctl_urb->transfer_buffer_length = size;
if (usbos_info->rxctl_deferrespok) {
/* BMAC model */
usbos_info->ctl_read.bRequestType = USB_DIR_IN | USB_TYPE_VENDOR |
USB_RECIP_INTERFACE;
usbos_info->ctl_read.bRequest = DL_DEFER_RESP_OK;
} else {
/* full dongle model */
usbos_info->ctl_read.bRequestType = USB_DIR_IN | USB_TYPE_CLASS |
USB_RECIP_INTERFACE;
usbos_info->ctl_read.bRequest = 1;
}
usb_fill_control_urb(usbos_info->ctl_urb,
usbos_info->usb,
usb_rcvctrlpipe(usbos_info->usb, 0),
(unsigned char *) &usbos_info->ctl_read,
buf, size, (usb_complete_t)dbus_usbos_ctlread_complete, usbos_info);
status = USB_SUBMIT_URB(usbos_info->ctl_urb);
if (status < 0) {
DBUSERR(("%s: usb_submit_urb failed %d\n", __FUNCTION__, status));
up(&usbos_info->ctl_lock);
USB_AUTOPM_PUT_INTERFACE_ASYNC(g_probe_info.intf);
return DBUS_ERR_RXCTLFAIL;
}
return DBUS_OK;
}
static int
dbus_usbos_intf_get_attrib(void *bus, dbus_attrib_t *attrib)
{
usbos_info_t *usbos_info = (usbos_info_t *) bus;
if ((usbos_info == NULL) || (attrib == NULL))
return DBUS_ERR;
attrib->bustype = DBUS_USB;
attrib->vid = g_probe_info.vid;
attrib->pid = g_probe_info.pid;
attrib->devid = 0x4322;
attrib->nchan = 1;
/* MaxPacketSize for USB hi-speed bulk out is 512 bytes
* and 64-bytes for full-speed.
* When sending pkt > MaxPacketSize, Host SW breaks it
* up into multiple packets.
*/
attrib->mtu = usbos_info->maxps;
return DBUS_OK;
}
/** Called by higher layer (dbus_usb.c) when it wants to 'up' the USB interface to the dongle */
static int
dbus_usbos_intf_up(void *bus)
{
usbos_info_t *usbos_info = (usbos_info_t *) bus;
uint16 ifnum;
#ifdef BCMUSBDEV_COMPOSITE
int wlan_if = 0;
#endif
if (usbos_info == NULL)
return DBUS_ERR;
if (usbos_info->usb == NULL)
return DBUS_ERR;
#if defined(INTR_EP_ENABLE)
/* full dongle use intr EP, bmac doesn't use it */
if (usbos_info->intr_urb) {
int ret;
usb_fill_int_urb(usbos_info->intr_urb, usbos_info->usb,
usbos_info->intr_pipe, &usbos_info->intr,
usbos_info->intr_size, (usb_complete_t)dbus_usbos_intr_complete,
usbos_info, usbos_info->interval);
if ((ret = USB_SUBMIT_URB(usbos_info->intr_urb))) {
DBUSERR(("%s USB_SUBMIT_URB failed with status %d\n", __FUNCTION__, ret));
return DBUS_ERR;
}
}
#endif
if (usbos_info->ctl_urb) {
usbos_info->ctl_in_pipe = usb_rcvctrlpipe(usbos_info->usb, 0);
usbos_info->ctl_out_pipe = usb_sndctrlpipe(usbos_info->usb, 0);
#ifdef BCMUSBDEV_COMPOSITE
wlan_if = dbus_usbos_intf_wlan(usbos_info->usb);
ifnum = cpu_to_le16(IFDESC(usbos_info->usb, wlan_if).bInterfaceNumber);
#else
ifnum = cpu_to_le16(IFDESC(usbos_info->usb, CONTROL_IF).bInterfaceNumber);
#endif /* BCMUSBDEV_COMPOSITE */
/* CTL Write */
usbos_info->ctl_write.bRequestType =
USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
usbos_info->ctl_write.bRequest = 0;
usbos_info->ctl_write.wValue = cpu_to_le16(0);
usbos_info->ctl_write.wIndex = cpu_to_le16p(&ifnum);
/* CTL Read */
usbos_info->ctl_read.bRequestType =
USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE;
usbos_info->ctl_read.bRequest = 1;
usbos_info->ctl_read.wValue = cpu_to_le16(0);
usbos_info->ctl_read.wIndex = cpu_to_le16p(&ifnum);
}
/* Success, indicate usbos_info is fully up */
dbus_usbos_state_change(usbos_info, DBUS_STATE_UP);
return DBUS_OK;
} /* dbus_usbos_intf_up */
static int
dbus_usbos_intf_down(void *bus)
{
usbos_info_t *usbos_info = (usbos_info_t *) bus;
if (usbos_info == NULL)
return DBUS_ERR;
dbusos_stop(usbos_info);
return DBUS_OK;
}
static int
dbus_usbos_intf_stop(void *bus)
{
usbos_info_t *usbos_info = (usbos_info_t *) bus;
if (usbos_info == NULL)
return DBUS_ERR;
dbusos_stop(usbos_info);
return DBUS_OK;
}
/** Called by higher layer (dbus_usb.c) */
static int
dbus_usbos_intf_set_config(void *bus, dbus_config_t *config)
{
int err = DBUS_ERR;
usbos_info_t* usbos_info = bus;
if (config->config_id == DBUS_CONFIG_ID_RXCTL_DEFERRES) {
usbos_info->rxctl_deferrespok = config->rxctl_deferrespok;
err = DBUS_OK;
} else if (config->config_id == DBUS_CONFIG_ID_AGGR_LIMIT) {
/* DBUS_CONFIG_ID_AGGR_LIMIT shouldn't be called after probe stage */
ASSERT(disc_arg == NULL);
ASSERT(config->aggr_param.maxrxsf > 0);
ASSERT(config->aggr_param.maxrxsize > 0);
if (config->aggr_param.maxrxsize > usbos_info->rxbuf_len) {
int state = usbos_info->pub->busstate;
dbus_usbos_unlink(&usbos_info->req_rxpostedq, &usbos_info->rxposted_lock);
while (atomic_read(&usbos_info->rxposted)) {
DBUSTRACE(("%s rxposted is %d, delay 1 ms\n", __FUNCTION__,
atomic_read(&usbos_info->rxposted)));
dbus_usbos_wait(usbos_info, 1);
}
usbos_info->rxbuf_len = config->aggr_param.maxrxsize;
dbus_usbos_state_change(usbos_info, state);
}
err = DBUS_OK;
}
return err;
}
/** Called by dbus_usb.c when it wants to download firmware into the dongle */
bool
dbus_usbos_dl_cmd(usbos_info_t *usbinfo, uint8 cmd, void *buffer, int buflen)
{
int transferred;
int index = 0;
char *tmpbuf;
if ((usbinfo == NULL) || (buffer == NULL) || (buflen == 0))
return FALSE;
tmpbuf = (char *) MALLOC(usbinfo->pub->osh, buflen);
if (!tmpbuf) {
DBUSERR(("%s: Unable to allocate memory \n", __FUNCTION__));
return FALSE;
}
#ifdef BCM_REQUEST_FW
if (cmd == DL_GO) {
index = 1;
}
#endif
/* Disable USB autosuspend until this request completes, request USB resume if needed. */
USB_AUTOPM_GET_INTERFACE(g_probe_info.intf);
transferred = USB_CONTROL_MSG(usbinfo->usb, usb_rcvctrlpipe(usbinfo->usb, 0),
cmd, (USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_INTERFACE),
0, index,
(void*) tmpbuf, buflen, USB_CTRL_EP_TIMEOUT);
if (transferred == buflen) {
memcpy(buffer, tmpbuf, buflen);
} else {
DBUSERR(("%s: usb_control_msg failed %d\n", __FUNCTION__, transferred));
}
USB_AUTOPM_PUT_INTERFACE(g_probe_info.intf);
MFREE(usbinfo->pub->osh, tmpbuf, buflen);
return (transferred == buflen);
}
/**
* Called by dbus_usb.c when it wants to download a buffer into the dongle (e.g. as part of the
* download process, when writing nvram variables).
*/
int
dbus_write_membytes(usbos_info_t* usbinfo, bool set, uint32 address, uint8 *data, uint size)
{
hwacc_t hwacc;
int write_bytes = 4;
int status;
int retval = 0;
DBUSTRACE(("Enter:%s\n", __FUNCTION__));
/* Read is not supported */
if (set == 0) {
DBUSERR(("Currently read is not supported!!\n"));
return -1;
}
USB_AUTOPM_GET_INTERFACE(g_probe_info.intf);
hwacc.cmd = DL_CMD_WRHW;
hwacc.addr = address;
DBUSTRACE(("Address:%x size:%d", hwacc.addr, size));
do {
if (size >= 4) {
write_bytes = 4;
} else if (size >= 2) {
write_bytes = 2;
} else {
write_bytes = 1;
}
hwacc.len = write_bytes;
while (size >= write_bytes) {
hwacc.data = *((unsigned int*)data);
status = USB_CONTROL_MSG(usbinfo->usb, usb_sndctrlpipe(usbinfo->usb, 0),
DL_WRHW, (USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_INTERFACE),
1, 0, (char *)&hwacc, sizeof(hwacc_t), USB_CTRL_EP_TIMEOUT);
if (status < 0) {
retval = -1;
DBUSERR((" Ctrl write hwacc failed w/status %d @ address:%x \n",
status, hwacc.addr));
goto err;
}
hwacc.addr += write_bytes;
data += write_bytes;
size -= write_bytes;
}
} while (size > 0);
err:
USB_AUTOPM_PUT_INTERFACE(g_probe_info.intf);
return retval;
}
int
dbus_usbos_readreg(void *bus, uint32 regaddr, int datalen, uint32 *value)
{
usbos_info_t *usbinfo = (usbos_info_t *) bus;
int ret = DBUS_OK;
int transferred;
uint32 cmd;
hwacc_t hwacc;
if (usbinfo == NULL)
return DBUS_ERR;
if (datalen == 1)
cmd = DL_RDHW8;
else if (datalen == 2)
cmd = DL_RDHW16;
else
cmd = DL_RDHW32;
USB_AUTOPM_GET_INTERFACE(g_probe_info.intf);
transferred = USB_CONTROL_MSG(usbinfo->usb, usb_rcvctrlpipe(usbinfo->usb, 0),
cmd, (USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_INTERFACE),
(uint16)(regaddr), (uint16)(regaddr >> 16),
(void *) &hwacc, sizeof(hwacc_t), USB_CTRL_EP_TIMEOUT);
if (transferred >= sizeof(hwacc_t)) {
*value = hwacc.data;
} else {
DBUSERR(("%s: usb_control_msg failed %d\n", __FUNCTION__, transferred));
ret = DBUS_ERR;
}
USB_AUTOPM_PUT_INTERFACE(g_probe_info.intf);
return ret;
}
int
dbus_usbos_writereg(void *bus, uint32 regaddr, int datalen, uint32 data)
{
usbos_info_t *usbinfo = (usbos_info_t *) bus;
int ret = DBUS_OK;
int transferred;
uint32 cmd = DL_WRHW;
hwacc_t hwacc;
if (usbinfo == NULL)
return DBUS_ERR;
USB_AUTOPM_GET_INTERFACE(g_probe_info.intf);
hwacc.cmd = DL_WRHW;
hwacc.addr = regaddr;
hwacc.data = data;
hwacc.len = datalen;
transferred = USB_CONTROL_MSG(usbinfo->usb, usb_sndctrlpipe(usbinfo->usb, 0),
cmd, (USB_DIR_OUT| USB_TYPE_VENDOR | USB_RECIP_INTERFACE),
1, 0,
(void *) &hwacc, sizeof(hwacc_t), USB_CTRL_EP_TIMEOUT);
if (transferred != sizeof(hwacc_t)) {
DBUSERR(("%s: usb_control_msg failed %d\n", __FUNCTION__, transferred));
ret = DBUS_ERR;
}
USB_AUTOPM_PUT_INTERFACE(g_probe_info.intf);
return ret;
}
int
dbus_usbos_wait(usbos_info_t *usbinfo, uint16 ms)
{
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0))
if (in_interrupt())
mdelay(ms);
else
msleep_interruptible(ms);
#else
wait_ms(ms);
#endif
return DBUS_OK;
}
/** Called by dbus_usb.c as part of the firmware download process */
bool
dbus_usbos_dl_send_bulk(usbos_info_t *usbinfo, void *buffer, int len)
{
bool ret = TRUE;
int status;
int transferred = 0;
if (usbinfo == NULL)
return DBUS_ERR;
USB_AUTOPM_GET_INTERFACE(g_probe_info.intf);
status = USB_BULK_MSG(usbinfo->usb, usbinfo->tx_pipe,
buffer, len,
&transferred, USB_BULK_EP_TIMEOUT);
if (status < 0) {
DBUSERR(("%s: usb_bulk_msg failed %d\n", __FUNCTION__, status));
ret = FALSE;
}
USB_AUTOPM_PUT_INTERFACE(g_probe_info.intf);
return ret;
}
static bool
dbus_usbos_intf_recv_needed(void *bus)
{
return FALSE;
}
/**
* Higher layer (dbus_usb.c) wants to execute a function on the condition that the rx spin lock has
* been acquired.
*/
static void*
dbus_usbos_intf_exec_rxlock(void *bus, exec_cb_t cb, struct exec_parms *args)
{
usbos_info_t *usbos_info = (usbos_info_t *) bus;
void *ret;
unsigned long flags;
if (usbos_info == NULL)
return NULL;
spin_lock_irqsave(&usbos_info->rxlock, flags);
ret = cb(args);
spin_unlock_irqrestore(&usbos_info->rxlock, flags);
return ret;
}
static void*
dbus_usbos_intf_exec_txlock(void *bus, exec_cb_t cb, struct exec_parms *args)
{
usbos_info_t *usbos_info = (usbos_info_t *) bus;
void *ret;
unsigned long flags;
if (usbos_info == NULL)
return NULL;
spin_lock_irqsave(&usbos_info->txlock, flags);
ret = cb(args);
spin_unlock_irqrestore(&usbos_info->txlock, flags);
return ret;
}
/**
* if an error condition was detected in this module, the higher DBUS layer (dbus_usb.c) has to
* be notified.
*/
int
dbus_usbos_errhandler(void *bus, int err)
{
usbos_info_t *usbos_info = (usbos_info_t *) bus;
if (usbos_info == NULL)
return DBUS_ERR;
if (usbos_info->cbarg && usbos_info->cbs) {
if (usbos_info->cbs->errhandler)
usbos_info->cbs->errhandler(usbos_info->cbarg, err);
}
return DBUS_OK;
}
/**
* if a change in bus state was detected in this module, the higher DBUS layer (dbus_usb.c) has to
* be notified.
*/
int
dbus_usbos_state_change(void *bus, int state)
{
usbos_info_t *usbos_info = (usbos_info_t *) bus;
if (usbos_info == NULL)
return DBUS_ERR;
if (usbos_info->cbarg && usbos_info->cbs) {
if (usbos_info->cbs->state_change)
usbos_info->cbs->state_change(usbos_info->cbarg, state);
}
usbos_info->pub->busstate = state;
return DBUS_OK;
}
int
dbus_bus_osl_register(int vid, int pid, probe_cb_t prcb,
disconnect_cb_t discb, void *prarg, dbus_intf_t **intf, void *param1, void *param2)
{
bzero(&g_probe_info, sizeof(probe_info_t));
probe_cb = prcb;
disconnect_cb = discb;
probe_arg = prarg;
devid_table[0].idVendor = vid;
devid_table[0].idProduct = pid;
*intf = &dbus_usbos_intf;
USB_REGISTER();
return DBUS_ERR_NODEVICE;
}
int
dbus_bus_osl_deregister()
{
g_probe_info.dereged = TRUE;
DHD_MUTEX_LOCK();
if (disconnect_cb && disc_arg && (g_probe_info.disc_cb_done == FALSE)) {
disconnect_cb(disc_arg);
disc_arg = NULL;
}
DHD_MUTEX_UNLOCK();
USB_DEREGISTER();
return DBUS_OK;
}
void *
dbus_usbos_intf_attach(dbus_pub_t *pub, void *cbarg, dbus_intf_callbacks_t *cbs)
{
usbos_info_t *usbos_info;
if (g_probe_info.dldone == FALSE) {
DBUSERR(("%s: err device not downloaded!\n", __FUNCTION__));
return NULL;
}
/* Sanity check for BUS_INFO() */
ASSERT(OFFSETOF(usbos_info_t, pub) == 0);
usbos_info = MALLOC(pub->osh, sizeof(usbos_info_t));
if (usbos_info == NULL)
return NULL;
bzero(usbos_info, sizeof(usbos_info_t));
usbos_info->pub = pub;
usbos_info->cbarg = cbarg;
usbos_info->cbs = cbs;
/* Needed for disconnect() */
g_probe_info.usbos_info = usbos_info;
/* Update USB Info */
usbos_info->usb = g_probe_info.usb;
usbos_info->rx_pipe = g_probe_info.rx_pipe;
usbos_info->rx_pipe2 = g_probe_info.rx_pipe2;
usbos_info->tx_pipe = g_probe_info.tx_pipe;
usbos_info->intr_pipe = g_probe_info.intr_pipe;
usbos_info->intr_size = g_probe_info.intr_size;
usbos_info->interval = g_probe_info.interval;
usbos_info->pub->device_speed = g_probe_info.device_speed;
if (usbos_info->rx_pipe2) {
usbos_info->pub->attrib.has_2nd_bulk_in_ep = 1;
} else {
usbos_info->pub->attrib.has_2nd_bulk_in_ep = 0;
}
if (usbos_info->tx_pipe)
usbos_info->maxps = usb_maxpacket(usbos_info->usb,
usbos_info->tx_pipe, usb_pipeout(usbos_info->tx_pipe));
INIT_LIST_HEAD(&usbos_info->req_rxfreeq);
INIT_LIST_HEAD(&usbos_info->req_txfreeq);
INIT_LIST_HEAD(&usbos_info->req_rxpostedq);
INIT_LIST_HEAD(&usbos_info->req_txpostedq);
spin_lock_init(&usbos_info->rxfree_lock);
spin_lock_init(&usbos_info->txfree_lock);
spin_lock_init(&usbos_info->rxposted_lock);
spin_lock_init(&usbos_info->txposted_lock);
spin_lock_init(&usbos_info->rxlock);
spin_lock_init(&usbos_info->txlock);
atomic_set(&usbos_info->rxposted, 0);
atomic_set(&usbos_info->txposted, 0);
#ifdef USB_DISABLE_INT_EP
usbos_info->intr_urb = NULL;
#else
if (!(usbos_info->intr_urb = USB_ALLOC_URB())) {
DBUSERR(("%s: usb_alloc_urb (tx) failed\n", __FUNCTION__));
goto fail;
}
#endif
if (!(usbos_info->ctl_urb = USB_ALLOC_URB())) {
DBUSERR(("%s: usb_alloc_urb (tx) failed\n", __FUNCTION__));
goto fail;
}
init_waitqueue_head(&usbos_info->wait);
if (!(usbos_info->blk_urb = USB_ALLOC_URB())) { /* for embedded image downloading */
DBUSERR(("%s: usb_alloc_urb (tx) failed\n", __FUNCTION__));
goto fail;
}
usbos_info->rxbuf_len = (uint)usbos_info->pub->rxsize;
atomic_set(&usbos_info->txallocated, 0);
if (DBUS_OK != dbus_usbos_urbreqs_alloc(usbos_info,
usbos_info->pub->ntxq, FALSE)) {
goto fail;
}
atomic_set(&usbos_info->rxallocated, 0);
if (DBUS_OK != dbus_usbos_urbreqs_alloc(usbos_info,
MIN(DBUS_USB_RXQUEUE_BATCH_ADD, usbos_info->pub->nrxq),
TRUE)) {
goto fail;
}
sema_init(&usbos_info->ctl_lock, 1);
#ifdef USBOS_THREAD
if (dbus_usbos_thread_init(usbos_info) == NULL)
goto fail;
#endif /* USBOS_THREAD */
#ifdef USBOS_TX_THREAD
if (dbus_usbos_tx_thread_init(usbos_info) == NULL)
goto fail;
#endif /* USBOS_TX_THREAD */
pub->dev_info = g_probe_info.usb;
return (void *) usbos_info;
fail:
if (usbos_info->intr_urb) {
USB_FREE_URB(usbos_info->intr_urb);
usbos_info->intr_urb = NULL;
}
if (usbos_info->ctl_urb) {
USB_FREE_URB(usbos_info->ctl_urb);
usbos_info->ctl_urb = NULL;
}
#if defined(BCM_REQUEST_FW)
if (usbos_info->blk_urb) {
USB_FREE_URB(usbos_info->blk_urb);
usbos_info->blk_urb = NULL;
}
#endif
dbus_usbos_urbreqs_free(usbos_info, TRUE);
atomic_set(&usbos_info->rxallocated, 0);
dbus_usbos_urbreqs_free(usbos_info, FALSE);
atomic_set(&usbos_info->txallocated, 0);
g_probe_info.usbos_info = NULL;
MFREE(pub->osh, usbos_info, sizeof(usbos_info_t));
return NULL;
} /* dbus_usbos_intf_attach */
void
dbus_usbos_intf_detach(dbus_pub_t *pub, void *info)
{
usbos_info_t *usbos_info = (usbos_info_t *) info;
osl_t *osh = pub->osh;
if (usbos_info == NULL) {
return;
}
#ifdef USBOS_TX_THREAD
dbus_usbos_tx_thread_deinit(usbos_info);
#endif /* USBOS_TX_THREAD */
/* Must unlink all URBs prior to driver unload;
* otherwise an URB callback can occur after driver
* has been de-allocated and rmmod'd
*/
dbusos_stop(usbos_info);
if (usbos_info->intr_urb) {
USB_FREE_URB(usbos_info->intr_urb);
usbos_info->intr_urb = NULL;
}
if (usbos_info->ctl_urb) {
USB_FREE_URB(usbos_info->ctl_urb);
usbos_info->ctl_urb = NULL;
}
if (usbos_info->blk_urb) {
USB_FREE_URB(usbos_info->blk_urb);
usbos_info->blk_urb = NULL;
}
dbus_usbos_urbreqs_free(usbos_info, TRUE);
atomic_set(&usbos_info->rxallocated, 0);
dbus_usbos_urbreqs_free(usbos_info, FALSE);
atomic_set(&usbos_info->txallocated, 0);
#ifdef USBOS_THREAD
dbus_usbos_thread_deinit(usbos_info);
#endif /* USBOS_THREAD */
g_probe_info.usbos_info = NULL;
MFREE(osh, usbos_info, sizeof(usbos_info_t));
} /* dbus_usbos_intf_detach */
#ifdef USBOS_TX_THREAD
void*
dbus_usbos_tx_thread_init(usbos_info_t *usbos_info)
{
spin_lock_init(&usbos_info->usbos_tx_list_lock);
INIT_LIST_HEAD(&usbos_info->usbos_tx_list);
init_waitqueue_head(&usbos_info->usbos_tx_queue_head);
usbos_info->usbos_tx_kt = kthread_create(dbus_usbos_tx_thread_func,
usbos_info, "usb-tx-thread");
if (IS_ERR(usbos_info->usbos_tx_kt)) {
DBUSERR(("Thread Creation failed\n"));
return (NULL);
}
usbos_info->ctl_state = USBOS_REQUEST_STATE_UNSCHEDULED;
wake_up_process(usbos_info->usbos_tx_kt);
return (usbos_info->usbos_tx_kt);
}
void
dbus_usbos_tx_thread_deinit(usbos_info_t *usbos_info)
{
urb_req_t *req;
if (usbos_info->usbos_tx_kt) {
wake_up_interruptible(&usbos_info->usbos_tx_queue_head);
kthread_stop(usbos_info->usbos_tx_kt);
}
/* Move pending requests to free queue so they can be freed */
while ((req = dbus_usbos_qdeq(
&usbos_info->usbos_tx_list, &usbos_info->usbos_tx_list_lock)) != NULL) {
dbus_usbos_qenq(&usbos_info->req_txfreeq, req, &usbos_info->txfree_lock);
}
}
/**
* Allow USB in-band resume to block by submitting CTRL and DATA URBs on a separate thread.
*/
int
dbus_usbos_tx_thread_func(void *data)
{
usbos_info_t *usbos_info = (usbos_info_t *)data;
urb_req_t *req;
dbus_irb_tx_t *txirb;
int ret;
unsigned long flags;
#ifdef WL_THREADNICE
set_user_nice(current, WL_THREADNICE);
#endif
while (1) {
/* Wait until there are URBs to submit */
wait_event_interruptible_timeout(
usbos_info->usbos_tx_queue_head,
!list_empty(&usbos_info->usbos_tx_list) ||
usbos_info->ctl_state == USBOS_REQUEST_STATE_SCHEDULED,
100);
if (kthread_should_stop())
break;
/* Submit CTRL URB if needed */
if (usbos_info->ctl_state == USBOS_REQUEST_STATE_SCHEDULED) {
/* Disable USB autosuspend until this request completes. If the
* interface was suspended, this call blocks until it has been resumed.
*/
USB_AUTOPM_GET_INTERFACE(g_probe_info.intf);
usbos_info->ctl_state = USBOS_REQUEST_STATE_SUBMITTED;
ret = USB_SUBMIT_URB(usbos_info->ctl_urb);
if (ret != 0) {
DBUSERR(("%s CTRL USB_SUBMIT_URB failed, status %d\n",
__FUNCTION__, ret));
usbos_info->ctl_state = USBOS_REQUEST_STATE_UNSCHEDULED;
up(&usbos_info->ctl_lock);
USB_AUTOPM_PUT_INTERFACE_ASYNC(g_probe_info.intf);
}
}
/* Submit all available TX URBs */
while ((req = dbus_usbos_qdeq(&usbos_info->usbos_tx_list,
&usbos_info->usbos_tx_list_lock)) != NULL) {
/* Disable USB autosuspend until this request completes. If the
* interface was suspended, this call blocks until it has been resumed.
*/
USB_AUTOPM_GET_INTERFACE(g_probe_info.intf);
spin_lock_irqsave(&usbos_info->txlock, flags);
ret = USB_SUBMIT_URB(req->urb);
if (ret == 0) {
/* URB submitted successfully */
dbus_usbos_qenq(&usbos_info->req_txpostedq, req,
&usbos_info->txposted_lock);
atomic_inc(&usbos_info->txposted);
} else {
/* Submitting the URB failed. */
DBUSERR(("%s TX USB_SUBMIT_URB failed, status %d\n",
__FUNCTION__, ret));
USB_AUTOPM_PUT_INTERFACE_ASYNC(g_probe_info.intf);
}
spin_unlock_irqrestore(&usbos_info->txlock, flags);
if (ret != 0) {
/* Cleanup and notify higher layers */
dbus_usbos_qenq(&usbos_info->req_txfreeq, req,
&usbos_info->txfree_lock);
txirb = req->arg;
if (txirb->send_buf) {
MFREE(usbos_info->pub->osh, txirb->send_buf, req->buf_len);
txirb->send_buf = NULL;
req->buf_len = 0;
}
if (likely (usbos_info->cbarg && usbos_info->cbs)) {
if (likely (usbos_info->cbs->send_irb_complete != NULL))
usbos_info->cbs->send_irb_complete(
usbos_info->cbarg, txirb, DBUS_ERR_TXDROP);
}
}
}
}
return 0;
} /* dbus_usbos_tx_thread_func */
#endif /* USBOS_TX_THREAD */
#ifdef USBOS_THREAD
/**
* Increase system performance by creating a USB thread that runs parallel to other system
* activity.
*/
static void*
dbus_usbos_thread_init(usbos_info_t *usbos_info)
{
usbos_list_entry_t *entry;
unsigned long flags, ii;
spin_lock_init(&usbos_info->usbos_list_lock);
spin_lock_init(&usbos_info->ctrl_lock);
INIT_LIST_HEAD(&usbos_info->usbos_list);
INIT_LIST_HEAD(&usbos_info->usbos_free_list);
init_waitqueue_head(&usbos_info->usbos_queue_head);
atomic_set(&usbos_info->usbos_list_cnt, 0);
for (ii = 0; ii < (usbos_info->pub->nrxq + usbos_info->pub->ntxq); ii++) {
entry = MALLOC(usbos_info->pub->osh, sizeof(usbos_list_entry_t));
if (entry) {
spin_lock_irqsave(&usbos_info->usbos_list_lock, flags);
list_add_tail((struct list_head*) entry, &usbos_info->usbos_free_list);
spin_unlock_irqrestore(&usbos_info->usbos_list_lock, flags);
} else {
DBUSERR(("Failed to create list\n"));
}
}
usbos_info->usbos_kt = kthread_create(dbus_usbos_thread_func,
usbos_info, "usb-thread");
if (IS_ERR(usbos_info->usbos_kt)) {
DBUSERR(("Thread Creation failed\n"));
return (NULL);
}
wake_up_process(usbos_info->usbos_kt);
return (usbos_info->usbos_kt);
}
static void
dbus_usbos_thread_deinit(usbos_info_t *usbos_info)
{
struct list_head *cur, *next;
usbos_list_entry_t *entry;
unsigned long flags;
if (usbos_info->usbos_kt) {
wake_up_interruptible(&usbos_info->usbos_queue_head);
kthread_stop(usbos_info->usbos_kt);
}
#if defined(STRICT_GCC_WARNINGS) && defined(__GNUC__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wcast-qual"
#endif
list_for_each_safe(cur, next, &usbos_info->usbos_list)
{
entry = list_entry(cur, struct usbos_list_entry, list);
/* detach this entry from the list and then free the entry */
spin_lock_irqsave(&usbos_info->usbos_list_lock, flags);
list_del(cur);
MFREE(usbos_info->pub->osh, entry, sizeof(usbos_list_entry_t));
spin_unlock_irqrestore(&usbos_info->usbos_list_lock, flags);
}
list_for_each_safe(cur, next, &usbos_info->usbos_free_list)
{
entry = list_entry(cur, struct usbos_list_entry, list);
/* detach this entry from the list and then free the entry */
spin_lock_irqsave(&usbos_info->usbos_list_lock, flags);
list_del(cur);
MFREE(usbos_info->pub->osh, entry, sizeof(usbos_list_entry_t));
spin_unlock_irqrestore(&usbos_info->usbos_list_lock, flags);
}
#if defined(STRICT_GCC_WARNINGS) && defined(__GNUC__)
#pragma GCC diagnostic pop
#endif
}
/** Process completed URBs in a worker thread */
static int
dbus_usbos_thread_func(void *data)
{
usbos_info_t *usbos_info = (usbos_info_t *)data;
usbos_list_entry_t *entry;
struct list_head *cur, *next;
unsigned long flags;
#ifdef WL_THREADNICE
set_user_nice(current, WL_THREADNICE);
#endif
while (1) {
/* If the list is empty, then go to sleep */
wait_event_interruptible_timeout
(usbos_info->usbos_queue_head,
atomic_read(&usbos_info->usbos_list_cnt) > 0,
100);
if (kthread_should_stop())
break;
spin_lock_irqsave(&usbos_info->usbos_list_lock, flags);
/* For each entry on the list, process it. Remove the entry from
* the list when done.
*/
#if defined(STRICT_GCC_WARNINGS) && defined(__GNUC__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wcast-qual"
#endif
list_for_each_safe(cur, next, &usbos_info->usbos_list)
{
urb_req_t *req;
int len;
int stat;
usbos_info_t *usbos_info_local;
entry = list_entry(cur, struct usbos_list_entry, list);
if (entry == NULL)
break;
req = entry->urb_context;
len = entry->urb_length;
stat = entry->urb_status;
usbos_info_local = req->usbinfo;
/* detach this entry from the list and attach it to the free list */
list_del_init(cur);
spin_unlock_irqrestore(&usbos_info_local->usbos_list_lock, flags);
dbus_usbos_recv_complete_handle(req, len, stat);
spin_lock_irqsave(&usbos_info_local->usbos_list_lock, flags);
list_add_tail(cur, &usbos_info_local->usbos_free_list);
atomic_dec(&usbos_info_local->usbos_list_cnt);
}
spin_unlock_irqrestore(&usbos_info->usbos_list_lock, flags);
}
#if defined(STRICT_GCC_WARNINGS) && defined(__GNUC__)
#pragma GCC diagnostic pop
#endif
return 0;
} /* dbus_usbos_thread_func */
/** Called on Linux calling URB callback, see dbus_usbos_recv_complete() */
static void
dbus_usbos_dispatch_schedule(CALLBACK_ARGS)
{
urb_req_t *req = urb->context;
usbos_info_t *usbos_info = req->usbinfo;
usbos_list_entry_t *entry;
unsigned long flags;
struct list_head *cur;
spin_lock_irqsave(&usbos_info->usbos_list_lock, flags);
cur = usbos_info->usbos_free_list.next;
#if defined(STRICT_GCC_WARNINGS) && defined(__GNUC__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wcast-qual"
#endif
entry = list_entry(cur, struct usbos_list_entry, list);
#if defined(STRICT_GCC_WARNINGS) && defined(__GNUC__)
#pragma GCC diagnostic pop
#endif
/* detach this entry from the free list and prepare it insert it to use list */
list_del_init(cur);
if (entry) {
entry->urb_context = urb->context;
entry->urb_length = urb->actual_length;
entry->urb_status = urb->status;
atomic_inc(&usbos_info->usbos_list_cnt);
list_add_tail(cur, &usbos_info->usbos_list);
} else {
DBUSERR(("!!!!!!OUT OF MEMORY!!!!!!!\n"));
}
spin_unlock_irqrestore(&usbos_info->usbos_list_lock, flags);
/* thread */
wake_up_interruptible(&usbos_info->usbos_queue_head);
} /* dbus_usbos_dispatch_schedule */
#endif /* USBOS_THREAD */
#ifdef BCM_REQUEST_FW
struct request_fw_context {
const struct firmware *firmware;
struct semaphore lock;
};
/*
* Callback for dbus_request_firmware().
*/
static void
dbus_request_firmware_done(const struct firmware *firmware, void *ctx)
{
struct request_fw_context *context = (struct request_fw_context*)ctx;
/* Store the received firmware handle in the context and wake requester */
context->firmware = firmware;
up(&context->lock);
}
/*
* Send a firmware request and wait for completion.
*
* The use of the asynchronous version of request_firmware() is needed to avoid
* kernel oopses when we just come out of system hibernate.
*/
static int
dbus_request_firmware(const char *name, const struct firmware **firmware)
{
struct request_fw_context *context;
int ret;
context = kzalloc(sizeof(*context), GFP_KERNEL);
if (!context)
return -ENOMEM;
sema_init(&context->lock, 0);
ret = request_firmware_nowait(THIS_MODULE, true, name, &g_probe_info.usb->dev,
GFP_KERNEL, context, dbus_request_firmware_done);
if (ret) {
kfree(context);
return ret;
}
/* Wait for completion */
if (down_interruptible(&context->lock) != 0) {
kfree(context);
return -ERESTARTSYS;
}
*firmware = context->firmware;
kfree(context);
return *firmware != NULL ? 0 : -ENOENT;
}
static void *
dbus_get_fwfile(int devid, int chiprev, uint8 **fw, int *fwlen, uint16 boardtype, uint16 boardrev)
{
const struct firmware *firmware = NULL;
#ifndef OEM_ANDROID
s8 *device_id = NULL;
s8 *chip_rev = "";
#endif /* OEM_ANDROID */
s8 file_name[64];
int ret;
#ifndef OEM_ANDROID
switch (devid) {
case BCM4350_CHIP_ID:
case BCM4354_CHIP_ID:
case BCM43556_CHIP_ID:
case BCM43558_CHIP_ID:
case BCM43566_CHIP_ID:
case BCM43568_CHIP_ID:
case BCM43570_CHIP_ID:
case BCM4358_CHIP_ID:
device_id = "4350";
break;
case BCM43143_CHIP_ID:
device_id = "43143";
break;
case BCM43234_CHIP_ID:
case BCM43235_CHIP_ID:
case BCM43236_CHIP_ID:
device_id = "43236";
break;
case BCM43242_CHIP_ID:
device_id = "43242";
break;
case BCM43238_CHIP_ID:
device_id = "43238";
break;
case BCM43526_CHIP_ID:
device_id = "43526";
break;
case BCM43569_CHIP_ID:
device_id = "43569";
switch (chiprev) {
case 0:
chip_rev = "a0";
break;
case 2:
chip_rev = "a2";
break;
default:
break;
}
break;
default:
DBUSERR(("unsupported device %x\n", devid));
return NULL;
}
/* Load firmware */
snprintf(file_name, sizeof(file_name), "brcm/bcm%s%s-firmware.bin", device_id, chip_rev);
#else
snprintf(file_name, sizeof(file_name), "%s", CONFIG_ANDROID_BCMDHD_FW_PATH);
#endif /* OEM_ANDROID */
ret = dbus_request_firmware(file_name, &firmware);
if (ret) {
DBUSERR(("fail to request firmware %s\n", file_name));
return NULL;
}
*fwlen = firmware->size;
*fw = (uint8 *)firmware->data;
return (void *)firmware;
}
static void *
dbus_get_nvfile(int devid, int chiprev, uint8 **fw, int *fwlen, uint16 boardtype, uint16 boardrev)
{
const struct firmware *firmware = NULL;
#ifndef OEM_ANDROID
s8 *device_id = NULL;
s8 *chip_rev = "";
#endif /* OEM_ANDROID */
s8 file_name[64];
int ret;
#ifndef OEM_ANDROID
switch (devid) {
case BCM4350_CHIP_ID:
case BCM4354_CHIP_ID:
case BCM43556_CHIP_ID:
case BCM43558_CHIP_ID:
case BCM43566_CHIP_ID:
case BCM43568_CHIP_ID:
case BCM43570_CHIP_ID:
case BCM4358_CHIP_ID:
device_id = "4350";
break;
case BCM43143_CHIP_ID:
device_id = "43143";
break;
case BCM43234_CHIP_ID:
device_id = "43234";
break;
case BCM43235_CHIP_ID:
device_id = "43235";
break;
case BCM43236_CHIP_ID:
device_id = "43236";
break;
case BCM43238_CHIP_ID:
device_id = "43238";
break;
case BCM43242_CHIP_ID:
device_id = "43242";
break;
case BCM43526_CHIP_ID:
device_id = "43526";
break;
case BCM43569_CHIP_ID:
device_id = "43569";
switch (chiprev) {
case 0:
chip_rev = "a0";
break;
case 2:
chip_rev = "a2";
break;
default:
break;
}
break;
default:
DBUSERR(("unsupported device %x\n", devid));
return NULL;
}
/* Load board specific nvram file */
snprintf(file_name, sizeof(file_name), "brcm/bcm%s%s-%2x-%2x.nvm",
device_id, chip_rev, boardtype, boardrev);
#else
snprintf(file_name, sizeof(file_name), "%s", CONFIG_ANDROID_BCMDHD_NVRAM_PATH);
#endif /* OEM_ANDROID */
ret = dbus_request_firmware(file_name, &firmware);
if (ret) {
DBUSERR(("fail to request nvram %s\n", file_name));
#ifndef OEM_ANDROID
/* Load generic nvram file */
snprintf(file_name, sizeof(file_name), "brcm/bcm%s%s.nvm",
device_id, chip_rev);
ret = dbus_request_firmware(file_name, &firmware);
#endif /* OEM_ANDROID */
if (ret) {
DBUSERR(("fail to request nvram %s\n", file_name));
return NULL;
}
}
*fwlen = firmware->size;
*fw = (uint8 *)firmware->data;
return (void *)firmware;
}
void *
dbus_get_fw_nvfile(int devid, int chiprev, uint8 **fw, int *fwlen, int type, uint16 boardtype,
uint16 boardrev)
{
switch (type) {
case DBUS_FIRMWARE:
return dbus_get_fwfile(devid, chiprev, fw, fwlen, boardtype, boardrev);
case DBUS_NVFILE:
return dbus_get_nvfile(devid, chiprev, fw, fwlen, boardtype, boardrev);
default:
return NULL;
}
}
void
dbus_release_fw_nvfile(void *firmware)
{
release_firmware((struct firmware *)firmware);
}
#endif /* BCM_REQUEST_FW */
#ifdef BCMUSBDEV_COMPOSITE
/**
* For a composite device the interface order is not guaranteed, scan the device struct for the WLAN
* interface.
*/
static int
dbus_usbos_intf_wlan(struct usb_device *usb)
{
int i, num_of_eps, ep, intf_wlan = -1;
int num_intf = CONFIGDESC(usb)->bNumInterfaces;
struct usb_endpoint_descriptor *endpoint;
for (i = 0; i < num_intf; i++) {
if (IFDESC(usb, i).bInterfaceClass != USB_CLASS_VENDOR_SPEC)
continue;
num_of_eps = IFDESC(usb, i).bNumEndpoints;
for (ep = 0; ep < num_of_eps; ep++) {
endpoint = &IFEPDESC(usb, i, ep);
if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
USB_ENDPOINT_XFER_BULK) {
intf_wlan = i;
break;
}
}
if (ep < num_of_eps)
break;
}
return intf_wlan;
}
#endif /* BCMUSBDEV_COMPOSITE */