diff options
Diffstat (limited to 'drivers/net/wireless/brcm80211/brcmfmac/usb.c')
| -rw-r--r-- | drivers/net/wireless/brcm80211/brcmfmac/usb.c | 1623 |
1 files changed, 1623 insertions, 0 deletions
diff --git a/drivers/net/wireless/brcm80211/brcmfmac/usb.c b/drivers/net/wireless/brcm80211/brcmfmac/usb.c new file mode 100644 index 00000000000..d4a9e8e7deb --- /dev/null +++ b/drivers/net/wireless/brcm80211/brcmfmac/usb.c @@ -0,0 +1,1623 @@ +/* + * Copyright (c) 2011 Broadcom Corporation + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/kthread.h> +#include <linux/slab.h> +#include <linux/skbuff.h> +#include <linux/netdevice.h> +#include <linux/spinlock.h> +#include <linux/ethtool.h> +#include <linux/fcntl.h> +#include <linux/fs.h> +#include <linux/uaccess.h> +#include <linux/firmware.h> +#include <linux/usb.h> +#include <net/cfg80211.h> + +#include <defs.h> +#include <brcmu_utils.h> +#include <brcmu_wifi.h> +#include <dhd_bus.h> +#include <dhd_dbg.h> + +#include "usb_rdl.h" +#include "usb.h" + +#define IOCTL_RESP_TIMEOUT 2000 + +#define BRCMF_USB_SYNC_TIMEOUT 300 /* ms */ +#define BRCMF_USB_DLIMAGE_SPINWAIT 100 /* in unit of ms */ +#define BRCMF_USB_DLIMAGE_LIMIT 500 /* spinwait limit (ms) */ + +#define BRCMF_POSTBOOT_ID 0xA123 /* ID to detect if dongle + has boot up */ +#define BRCMF_USB_RESETCFG_SPINWAIT 1 /* wait after resetcfg (ms) */ + +#define BRCMF_USB_NRXQ 50 +#define BRCMF_USB_NTXQ 50 + +#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 + +#define CONTROL_IF 0 +#define BULK_IF 0 + +#define BRCMF_USB_CBCTL_WRITE 0 +#define BRCMF_USB_CBCTL_READ 1 +#define BRCMF_USB_MAX_PKT_SIZE 1600 + +#define BRCMF_USB_43236_FW_NAME "brcm/brcmfmac43236b.bin" + +enum usbdev_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 the device + */ + USBOS_SUSPEND_STATE_SUSPENDED /* Device suspended */ +}; + +struct brcmf_usb_probe_info { + void *usbdev_info; + struct usb_device *usb; /* USB device pointer from OS */ + uint rx_pipe, tx_pipe, intr_pipe, rx_pipe2; + int intr_size; /* Size of interrupt message */ + int interval; /* Interrupt polling interval */ + int vid; + int pid; + enum usb_device_speed device_speed; + enum usbdev_suspend_state suspend_state; + struct usb_interface *intf; +}; +static struct brcmf_usb_probe_info usbdev_probe_info; + +struct brcmf_usb_image { + void *data; + u32 len; +}; +static struct brcmf_usb_image g_image = { NULL, 0 }; + +struct intr_transfer_buf { + u32 notification; + u32 reserved; +}; + +struct brcmf_usbdev_info { + struct brcmf_usbdev bus_pub; /* MUST BE FIRST */ + spinlock_t qlock; + struct list_head rx_freeq; + struct list_head rx_postq; + struct list_head tx_freeq; + struct list_head tx_postq; + enum usbdev_suspend_state suspend_state; + uint rx_pipe, tx_pipe, intr_pipe, rx_pipe2; + + bool activity; + int rx_low_watermark; + int tx_low_watermark; + int tx_high_watermark; + bool txoff; + bool rxoff; + bool txoverride; + + struct brcmf_usbreq *tx_reqs; + struct brcmf_usbreq *rx_reqs; + + u8 *image; /* buffer for combine fw and nvram */ + int image_len; + + wait_queue_head_t wait; + bool waitdone; + int sync_urb_status; + + struct usb_device *usbdev; + struct device *dev; + enum usb_device_speed device_speed; + + int ctl_in_pipe, ctl_out_pipe; + struct urb *ctl_urb; /* URB for control endpoint */ + struct usb_ctrlrequest ctl_write; + struct usb_ctrlrequest ctl_read; + u32 ctl_urb_actual_length; + int ctl_urb_status; + int ctl_completed; + wait_queue_head_t ioctl_resp_wait; + wait_queue_head_t ctrl_wait; + ulong ctl_op; + + bool rxctl_deferrespok; + + struct urb *bulk_urb; /* used for FW download */ + struct urb *intr_urb; /* URB for interrupt endpoint */ + int intr_size; /* Size of interrupt message */ + int interval; /* Interrupt polling interval */ + struct intr_transfer_buf intr; /* Data buffer for interrupt endpoint */ + + struct brcmf_usb_probe_info probe_info; + +}; + +static void brcmf_usb_rx_refill(struct brcmf_usbdev_info *devinfo, + struct brcmf_usbreq *req); + +MODULE_AUTHOR("Broadcom Corporation"); +MODULE_DESCRIPTION("Broadcom 802.11n wireless LAN fullmac usb driver."); +MODULE_SUPPORTED_DEVICE("Broadcom 802.11n WLAN fullmac usb cards"); +MODULE_LICENSE("Dual BSD/GPL"); + +static struct brcmf_usbdev *brcmf_usb_get_buspub(struct device *dev) +{ + struct brcmf_bus *bus_if = dev_get_drvdata(dev); + return bus_if->bus_priv.usb; +} + +static struct brcmf_usbdev_info *brcmf_usb_get_businfo(struct device *dev) +{ + return brcmf_usb_get_buspub(dev)->devinfo; +} + +#if 0 +static void +brcmf_usb_txflowcontrol(struct brcmf_usbdev_info *devinfo, bool onoff) +{ + dhd_txflowcontrol(devinfo->bus_pub.netdev, 0, onoff); +} +#endif + +static int brcmf_usb_ioctl_resp_wait(struct brcmf_usbdev_info *devinfo, + uint *condition, bool *pending) +{ + DECLARE_WAITQUEUE(wait, current); + int timeout = IOCTL_RESP_TIMEOUT; + + /* Convert timeout in millsecond to jiffies */ + timeout = msecs_to_jiffies(timeout); + /* Wait until control frame is available */ + add_wait_queue(&devinfo->ioctl_resp_wait, &wait); + set_current_state(TASK_INTERRUPTIBLE); + + smp_mb(); + while (!(*condition) && (!signal_pending(current) && timeout)) { + timeout = schedule_timeout(timeout); + /* Wait until control frame is available */ + smp_mb(); + } + + if (signal_pending(current)) + *pending = true; + + set_current_state(TASK_RUNNING); + remove_wait_queue(&devinfo->ioctl_resp_wait, &wait); + + return timeout; +} + +static int brcmf_usb_ioctl_resp_wake(struct brcmf_usbdev_info *devinfo) +{ + if (waitqueue_active(&devinfo->ioctl_resp_wait)) + wake_up_interruptible(&devinfo->ioctl_resp_wait); + + return 0; +} + +static void +brcmf_usb_ctl_complete(struct brcmf_usbdev_info *devinfo, int type, int status) +{ + + if (unlikely(devinfo == NULL)) + return; + + if (type == BRCMF_USB_CBCTL_READ) { + if (status == 0) + devinfo->bus_pub.stats.rx_ctlpkts++; + else + devinfo->bus_pub.stats.rx_ctlerrs++; + } else if (type == BRCMF_USB_CBCTL_WRITE) { + if (status == 0) + devinfo->bus_pub.stats.tx_ctlpkts++; + else + devinfo->bus_pub.stats.tx_ctlerrs++; + } + + devinfo->ctl_urb_status = status; + devinfo->ctl_completed = true; + brcmf_usb_ioctl_resp_wake(devinfo); +} + +static void +brcmf_usb_ctlread_complete(struct urb *urb) +{ + struct brcmf_usbdev_info *devinfo = + (struct brcmf_usbdev_info *)urb->context; + + devinfo->ctl_urb_actual_length = urb->actual_length; + brcmf_usb_ctl_complete(devinfo, BRCMF_USB_CBCTL_READ, + urb->status); +} + +static void +brcmf_usb_ctlwrite_complete(struct urb *urb) +{ + struct brcmf_usbdev_info *devinfo = + (struct brcmf_usbdev_info *)urb->context; + + brcmf_usb_ctl_complete(devinfo, BRCMF_USB_CBCTL_WRITE, + urb->status); +} + +static int brcmf_usb_pnp(struct brcmf_usbdev_info *devinfo, uint state) +{ + return 0; +} + +static int +brcmf_usb_send_ctl(struct brcmf_usbdev_info *devinfo, u8 *buf, int len) +{ + int ret; + u16 size; + + if (devinfo == NULL || buf == NULL || + len == 0 || devinfo->ctl_urb == NULL) + return -EINVAL; + + /* If the USB/HSIC bus in sleep state, wake it up */ + if (devinfo->suspend_state == USBOS_SUSPEND_STATE_SUSPENDED) + if (brcmf_usb_pnp(devinfo, BCMFMAC_USB_PNP_RESUME) != 0) { + brcmf_dbg(ERROR, "Could not Resume the bus!\n"); + return -EIO; + } + + devinfo->activity = true; + size = len; + devinfo->ctl_write.wLength = cpu_to_le16p(&size); + devinfo->ctl_urb->transfer_buffer_length = size; + devinfo->ctl_urb_status = 0; + devinfo->ctl_urb_actual_length = 0; + + usb_fill_control_urb(devinfo->ctl_urb, + devinfo->usbdev, + devinfo->ctl_out_pipe, + (unsigned char *) &devinfo->ctl_write, + buf, size, + (usb_complete_t)brcmf_usb_ctlwrite_complete, + devinfo); + + ret = usb_submit_urb(devinfo->ctl_urb, GFP_ATOMIC); + if (ret < 0) + brcmf_dbg(ERROR, "usb_submit_urb failed %d\n", ret); + + return ret; +} + +static int +brcmf_usb_recv_ctl(struct brcmf_usbdev_info *devinfo, u8 *buf, int len) +{ + int ret; + u16 size; + + if ((devinfo == NULL) || (buf == NULL) || (len == 0) + || (devinfo->ctl_urb == NULL)) + return -EINVAL; + + size = len; + devinfo->ctl_read.wLength = cpu_to_le16p(&size); + devinfo->ctl_urb->transfer_buffer_length = size; + + if (devinfo->rxctl_deferrespok) { + /* BMAC model */ + devinfo->ctl_read.bRequestType = USB_DIR_IN + | USB_TYPE_VENDOR | USB_RECIP_INTERFACE; + devinfo->ctl_read.bRequest = DL_DEFER_RESP_OK; + } else { + /* full dongle model */ + devinfo->ctl_read.bRequestType = USB_DIR_IN + | USB_TYPE_CLASS | USB_RECIP_INTERFACE; + devinfo->ctl_read.bRequest = 1; + } + + usb_fill_control_urb(devinfo->ctl_urb, + devinfo->usbdev, + devinfo->ctl_in_pipe, + (unsigned char *) &devinfo->ctl_read, + buf, size, + (usb_complete_t)brcmf_usb_ctlread_complete, + devinfo); + + ret = usb_submit_urb(devinfo->ctl_urb, GFP_ATOMIC); + if (ret < 0) + brcmf_dbg(ERROR, "usb_submit_urb failed %d\n", ret); + + return ret; +} + +static int brcmf_usb_tx_ctlpkt(struct device *dev, u8 *buf, u32 len) +{ + int err = 0; + int timeout = 0; + bool pending; + struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); + + if (devinfo->bus_pub.state != BCMFMAC_USB_STATE_UP) { + /* TODO: handle suspend/resume */ + return -EIO; + } + + if (test_and_set_bit(0, &devinfo->ctl_op)) + return -EIO; + + err = brcmf_usb_send_ctl(devinfo, buf, len); + if (err) { + brcmf_dbg(ERROR, "fail %d bytes: %d\n", err, len); + return err; + } + + devinfo->ctl_completed = false; + timeout = brcmf_usb_ioctl_resp_wait(devinfo, &devinfo->ctl_completed, + &pending); + clear_bit(0, &devinfo->ctl_op); + if (!timeout) { + brcmf_dbg(ERROR, "Txctl wait timed out\n"); + err = -EIO; + } + return err; +} + +static int brcmf_usb_rx_ctlpkt(struct device *dev, u8 *buf, u32 len) +{ + int err = 0; + int timeout = 0; + bool pending; + struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); + + if (devinfo->bus_pub.state != BCMFMAC_USB_STATE_UP) { + /* TODO: handle suspend/resume */ + return -EIO; + } + if (test_and_set_bit(0, &devinfo->ctl_op)) + return -EIO; + + err = brcmf_usb_recv_ctl(devinfo, buf, len); + if (err) { + brcmf_dbg(ERROR, "fail %d bytes: %d\n", err, len); + return err; + } + devinfo->ctl_completed = false; + timeout = brcmf_usb_ioctl_resp_wait(devinfo, &devinfo->ctl_completed, + &pending); + err = devinfo->ctl_urb_status; + clear_bit(0, &devinfo->ctl_op); + if (!timeout) { + brcmf_dbg(ERROR, "rxctl wait timed out\n"); + err = -EIO; + } + if (!err) + return devinfo->ctl_urb_actual_length; + else + return err; +} + +static struct brcmf_usbreq *brcmf_usb_deq(struct brcmf_usbdev_info *devinfo, + struct list_head *q) +{ + unsigned long flags; + struct brcmf_usbreq *req; + spin_lock_irqsave(&devinfo->qlock, flags); + if (list_empty(q)) { + spin_unlock_irqrestore(&devinfo->qlock, flags); + return NULL; + } + req = list_entry(q->next, struct brcmf_usbreq, list); + list_del_init(q->next); + spin_unlock_irqrestore(&devinfo->qlock, flags); + return req; + +} + +static void brcmf_usb_enq(struct brcmf_usbdev_info *devinfo, + struct list_head *q, struct brcmf_usbreq *req) +{ + unsigned long flags; + spin_lock_irqsave(&devinfo->qlock, flags); + list_add_tail(&req->list, q); + spin_unlock_irqrestore(&devinfo->qlock, flags); +} + +static struct brcmf_usbreq * +brcmf_usbdev_qinit(struct list_head *q, int qsize) +{ + int i; + struct brcmf_usbreq *req, *reqs; + + reqs = kzalloc(sizeof(struct brcmf_usbreq) * qsize, GFP_ATOMIC); + if (reqs == NULL) { + brcmf_dbg(ERROR, "fail to allocate memory!\n"); + return NULL; + } + req = reqs; + + for (i = 0; i < qsize; i++) { + req->urb = usb_alloc_urb(0, GFP_ATOMIC); + if (!req->urb) + goto fail; + + INIT_LIST_HEAD(&req->list); + list_add_tail(&req->list, q); + req++; + } + return reqs; +fail: + brcmf_dbg(ERROR, "fail!\n"); + while (!list_empty(q)) { + req = list_entry(q->next, struct brcmf_usbreq, list); + if (req && req->urb) + usb_free_urb(req->urb); + list_del(q->next); + } + return NULL; + +} + +static void brcmf_usb_free_q(struct list_head *q, bool pending) +{ + struct brcmf_usbreq *req, *next; + int i = 0; + list_for_each_entry_safe(req, next, q, list) { + if (!req->urb) { + brcmf_dbg(ERROR, "bad req\n"); + break; + } + i++; + if (pending) { + usb_kill_urb(req->urb); + } else { + usb_free_urb(req->urb); + list_del_init(&req->list); + } + } +} + +static void brcmf_usb_del_fromq(struct brcmf_usbdev_info *devinfo, + struct brcmf_usbreq *req) +{ + unsigned long flags; + + spin_lock_irqsave(&devinfo->qlock, flags); + list_del_init(&req->list); + spin_unlock_irqrestore(&devinfo->qlock, flags); +} + + +static void brcmf_usb_tx_complete(struct urb *urb) +{ + struct brcmf_usbreq *req = (struct brcmf_usbreq *)urb->context; + struct brcmf_usbdev_info *devinfo = req->devinfo; + + brcmf_usb_del_fromq(devinfo, req); + if (urb->status == 0) + devinfo->bus_pub.stats.tx_packets++; + else + devinfo->bus_pub.stats.tx_errors++; + + dev_kfree_skb(req->skb); + req->skb = NULL; + brcmf_usb_enq(devinfo, &devinfo->tx_freeq, req); + +} + +static void brcmf_usb_rx_complete(struct urb *urb) +{ + struct brcmf_usbreq *req = (struct brcmf_usbreq *)urb->context; + struct brcmf_usbdev_info *devinfo = req->devinfo; + struct sk_buff *skb; + int ifidx = 0; + + brcmf_usb_del_fromq(devinfo, req); + skb = req->skb; + req->skb = NULL; + + if (urb->status == 0) { + devinfo->bus_pub.stats.rx_packets++; + } else { + devinfo->bus_pub.stats.rx_errors++; + dev_kfree_skb(skb); + brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req); + return; + } + + if (devinfo->bus_pub.state == BCMFMAC_USB_STATE_UP) { + skb_put(skb, urb->actual_length); + if (brcmf_proto_hdrpull(devinfo->dev, &ifidx, skb) != 0) { + brcmf_dbg(ERROR, "rx protocol error\n"); + brcmu_pkt_buf_free_skb(skb); + devinfo->bus_pub.bus->dstats.rx_errors++; + } else { + brcmf_rx_packet(devinfo->dev, ifidx, skb); + brcmf_usb_rx_refill(devinfo, req); + } + } else { + dev_kfree_skb(skb); + } + return; + +} + +static void brcmf_usb_rx_refill(struct brcmf_usbdev_info *devinfo, + struct brcmf_usbreq *req) +{ + struct sk_buff *skb; + int ret; + + if (!req || !devinfo) + return; + + skb = dev_alloc_skb(devinfo->bus_pub.bus_mtu); + if (!skb) { + brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req); + return; + } + req->skb = skb; + + usb_fill_bulk_urb(req->urb, devinfo->usbdev, devinfo->rx_pipe, + skb->data, skb_tailroom(skb), brcmf_usb_rx_complete, + req); + req->urb->transfer_flags |= URB_ZERO_PACKET; + req->devinfo = devinfo; + + ret = usb_submit_urb(req->urb, GFP_ATOMIC); + if (ret == 0) { + brcmf_usb_enq(devinfo, &devinfo->rx_postq, req); + } else { + dev_kfree_skb(req->skb); + req->skb = NULL; + brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req); + } + return; +} + +static void brcmf_usb_rx_fill_all(struct brcmf_usbdev_info *devinfo) +{ + struct brcmf_usbreq *req; + + if (devinfo->bus_pub.state != BCMFMAC_USB_STATE_UP) { + brcmf_dbg(ERROR, "bus is not up\n"); + return; + } + while ((req = brcmf_usb_deq(devinfo, &devinfo->rx_freeq)) != NULL) + brcmf_usb_rx_refill(devinfo, req); +} + +static void +brcmf_usb_state_change(struct brcmf_usbdev_info *devinfo, int state) +{ + struct brcmf_bus *bcmf_bus = devinfo->bus_pub.bus; + int old_state; + + + if (devinfo->bus_pub.state == state) + return; + + old_state = devinfo->bus_pub.state; + brcmf_dbg(TRACE, "dbus state change from %d to to %d\n", + old_state, state); + + /* Don't update state if it's PnP firmware re-download */ + if (state != BCMFMAC_USB_STATE_PNP_FWDL) /* TODO */ + devinfo->bus_pub.state = state; + + if ((old_state == BCMFMAC_USB_STATE_SLEEP) + && (state == BCMFMAC_USB_STATE_UP)) { + brcmf_usb_rx_fill_all(devinfo); + } + + /* update state of upper layer */ + if (state == BCMFMAC_USB_STATE_DOWN) { + brcmf_dbg(INFO, "DBUS is down\n"); + bcmf_bus->state = BRCMF_BUS_DOWN; + } else { + brcmf_dbg(INFO, "DBUS current state=%d\n", state); + } +} + +static void +brcmf_usb_intr_complete(struct urb *urb) +{ + struct brcmf_usbdev_info *devinfo = + (struct brcmf_usbdev_info *)urb->context; + bool killed; + + if (devinfo == NULL) + return; + + if (unlikely(urb->status)) { + if (devinfo->suspend_state == + USBOS_SUSPEND_STATE_SUSPEND_PENDING) + killed = true; + + if ((urb->status == -ENOENT && (!killed)) + || urb->status == -ESHUTDOWN || + urb->status == -ENODEV) { + brcmf_usb_state_change(devinfo, BCMFMAC_USB_STATE_DOWN); + } + } + + if (devinfo->bus_pub.state == BCMFMAC_USB_STATE_DOWN) { + brcmf_dbg(ERROR, "intr cb when DBUS down, ignoring\n"); + return; + } + + if (devinfo->bus_pub.state == BCMFMAC_USB_STATE_UP) + usb_submit_urb(devinfo->intr_urb, GFP_ATOMIC); +} + +static int brcmf_usb_tx(struct device *dev, struct sk_buff *skb) +{ + struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); + struct brcmf_usbreq *req; + int ret; + + if (devinfo->bus_pub.state != BCMFMAC_USB_STATE_UP) { + /* TODO: handle suspend/resume */ + return -EIO; + } + + req = brcmf_usb_deq(devinfo, &devinfo->tx_freeq); + if (!req) { + brcmf_dbg(ERROR, "no req to send\n"); + return -ENOMEM; + } + if (!req->urb) { + brcmf_dbg(ERROR, "no urb for req %p\n", req); + return -ENOBUFS; + } + + req->skb = skb; + req->devinfo = devinfo; + usb_fill_bulk_urb(req->urb, devinfo->usbdev, devinfo->tx_pipe, + skb->data, skb->len, brcmf_usb_tx_complete, req); + req->urb->transfer_flags |= URB_ZERO_PACKET; + ret = usb_submit_urb(req->urb, GFP_ATOMIC); + if (!ret) { + brcmf_usb_enq(devinfo, &devinfo->tx_postq, req); + } else { + req->skb = NULL; + brcmf_usb_enq(devinfo, &devinfo->tx_freeq, req); + } + + return ret; +} + + +static int brcmf_usb_up(struct device *dev) +{ + struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); + u16 ifnum; + + if (devinfo == NULL) + return -EINVAL; + + if (devinfo->bus_pub.state == BCMFMAC_USB_STATE_UP) + return 0; + + /* If the USB/HSIC bus in sleep state, wake it up */ + if (devinfo->suspend_state == USBOS_SUSPEND_STATE_SUSPENDED) { + if (brcmf_usb_pnp(devinfo, BCMFMAC_USB_PNP_RESUME) != 0) { + brcmf_dbg(ERROR, "Could not Resume the bus!\n"); + return -EIO; + } + } + devinfo->activity = true; + + /* Success, indicate devinfo is fully up */ + brcmf_usb_state_change(devinfo, BCMFMAC_USB_STATE_UP); + + if (devinfo->intr_urb) { + int ret; + + usb_fill_int_urb(devinfo->intr_urb, devinfo->usbdev, + devinfo->intr_pipe, + &devinfo->intr, + devinfo->intr_size, + (usb_complete_t)brcmf_usb_intr_complete, + devinfo, + devinfo->interval); + + ret = usb_submit_urb(devinfo->intr_urb, GFP_ATOMIC); + if (ret) { + brcmf_dbg(ERROR, "USB_SUBMIT_URB failed with status %d\n", + ret); + return -EINVAL; + } + } + + if (devinfo->ctl_urb) { + devinfo->ctl_in_pipe = usb_rcvctrlpipe(devinfo->usbdev, 0); + devinfo->ctl_out_pipe = usb_sndctrlpipe(devinfo->usbdev, 0); + + ifnum = IFDESC(devinfo->usbdev, CONTROL_IF).bInterfaceNumber; + + /* CTL Write */ + devinfo->ctl_write.bRequestType = + USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE; + devinfo->ctl_write.bRequest = 0; + devinfo->ctl_write.wValue = cpu_to_le16(0); + devinfo->ctl_write.wIndex = cpu_to_le16p(&ifnum); + + /* CTL Read */ + devinfo->ctl_read.bRequestType = + USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE; + devinfo->ctl_read.bRequest = 1; + devinfo->ctl_read.wValue = cpu_to_le16(0); + devinfo->ctl_read.wIndex = cpu_to_le16p(&ifnum); + } + brcmf_usb_rx_fill_all(devinfo); + return 0; +} + +static void brcmf_usb_down(struct device *dev) +{ + struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); + + if (devinfo == NULL) + return; + + brcmf_dbg(TRACE, "enter\n"); + if (devinfo->bus_pub.state == BCMFMAC_USB_STATE_DOWN) + return; + + brcmf_usb_state_change(devinfo, BCMFMAC_USB_STATE_DOWN); + if (devinfo->intr_urb) + usb_kill_urb(devinfo->intr_urb); + + if (devinfo->ctl_urb) + usb_kill_urb(devinfo->ctl_urb); + + if (devinfo->bulk_urb) + usb_kill_urb(devinfo->bulk_urb); + brcmf_usb_free_q(&devinfo->tx_postq, true); + + brcmf_usb_free_q(&devinfo->rx_postq, true); +} + +static int +brcmf_usb_sync_wait(struct brcmf_usbdev_info *devinfo, u16 time) +{ + int ret; + int err = 0; + int ms = time; + + ret = wait_event_interruptible_timeout(devinfo->wait, + devinfo->waitdone == true, (ms * HZ / 1000)); + + if ((devinfo->waitdone == false) || (devinfo->sync_urb_status)) { + brcmf_dbg(ERROR, "timeout(%d) or urb err=%d\n", + ret, devinfo->sync_urb_status); + err = -EINVAL; + } + devinfo->waitdone = false; + return err; +} + +static void +brcmf_usb_sync_complete(struct urb *urb) +{ + struct brcmf_usbdev_info *devinfo = + (struct brcmf_usbdev_info *)urb->context; + + devinfo->waitdone = true; + wake_up_interruptible(&devinfo->wait); + devinfo->sync_urb_status = urb->status; +} + +static bool brcmf_usb_dl_cmd(struct brcmf_usbdev_info *devinfo, u8 cmd, + void *buffer, int buflen) +{ + int ret = 0; + char *tmpbuf; + u16 size; + + if ((!devinfo) || (devinfo->ctl_urb == NULL)) + return false; + + tmpbuf = kmalloc(buflen, GFP_ATOMIC); + if (!tmpbuf) + return false; + + size = buflen; + devinfo->ctl_urb->transfer_buffer_length = size; + + devinfo->ctl_read.wLength = cpu_to_le16p(&size); + devinfo->ctl_read.bRequestType = USB_DIR_IN | USB_TYPE_VENDOR | + USB_RECIP_INTERFACE; + devinfo->ctl_read.bRequest = cmd; + + usb_fill_control_urb(devinfo->ctl_urb, + devinfo->usbdev, + usb_rcvctrlpipe(devinfo->usbdev, 0), + (unsigned char *) &devinfo->ctl_read, + (void *) tmpbuf, size, + (usb_complete_t)brcmf_usb_sync_complete, devinfo); + + ret = usb_submit_urb(devinfo->ctl_urb, GFP_ATOMIC); + if (ret < 0) { + brcmf_dbg(ERROR, "usb_submit_urb failed %d\n", ret); + kfree(tmpbuf); + return false; + } + + ret = brcmf_usb_sync_wait(devinfo, BRCMF_USB_SYNC_TIMEOUT); + memcpy(buffer, tmpbuf, buflen); + kfree(tmpbuf); + + return (ret == 0); +} + +static bool +brcmf_usb_dlneeded(struct brcmf_usbdev_info *devinfo) +{ + struct bootrom_id_le id; + u32 chipid, chiprev; + + brcmf_dbg(TRACE, "enter\n"); + + if (devinfo == NULL) + return false; + + /* Check if firmware downloaded already by querying runtime ID */ + id.chip = cpu_to_le32(0xDEAD); + brcmf_usb_dl_cmd(devinfo, DL_GETVER, &id, + sizeof(struct bootrom_id_le)); + + chipid = le32_to_cpu(id.chip); + chiprev = le32_to_cpu(id.chiprev); + + if ((chipid & 0x4300) == 0x4300) + brcmf_dbg(INFO, "chip %x rev 0x%x\n", chipid, chiprev); + else + brcmf_dbg(INFO, "chip %d rev 0x%x\n", chipid, chiprev); + if (chipid == BRCMF_POSTBOOT_ID) { + brcmf_dbg(INFO, "firmware already downloaded\n"); + brcmf_usb_dl_cmd(devinfo, DL_RESETCFG, &id, + sizeof(struct bootrom_id_le)); + return false; + } else { + devinfo->bus_pub.attrib.devid = chipid; + devinfo->bus_pub.attrib.chiprev = chiprev; + } + return true; +} + +static int +brcmf_usb_resetcfg(struct brcmf_usbdev_info *devinfo) +{ + struct bootrom_id_le id; + u16 wait = 0, wait_time; + + brcmf_dbg(TRACE, "enter\n"); + + if (devinfo == NULL) + return -EINVAL; + + /* Give dongle chance to boot */ + wait_time = BRCMF_USB_DLIMAGE_SPINWAIT; + while (wait < BRCMF_USB_DLIMAGE_LIMIT) { + mdelay(wait_time); + wait += wait_time; + id.chip = cpu_to_le32(0xDEAD); /* Get the ID */ + brcmf_usb_dl_cmd(devinfo, DL_GETVER, &id, + sizeof(struct bootrom_id_le)); + if (id.chip == cpu_to_le32(BRCMF_POSTBOOT_ID)) + break; + } + + if (id.chip == cpu_to_le32(BRCMF_POSTBOOT_ID)) { + brcmf_dbg(INFO, "download done %d ms postboot chip 0x%x/rev 0x%x\n", + wait, le32_to_cpu(id.chip), le32_to_cpu(id.chiprev)); + + brcmf_usb_dl_cmd(devinfo, DL_RESETCFG, &id, + sizeof(struct bootrom_id_le)); + + /* XXX this wait may not be necessary */ + mdelay(BRCMF_USB_RESETCFG_SPINWAIT); + return 0; + } else { + brcmf_dbg(ERROR, "Cannot talk to Dongle. Firmware is not UP, %d ms\n", + wait); + return -EINVAL; + } +} + + +static int +brcmf_usb_dl_send_bulk(struct brcmf_usbdev_info *devinfo, void *buffer, int len) +{ + int ret; + + if ((devinfo == NULL) || (devinfo->bulk_urb == NULL)) + return -EINVAL; + + /* Prepare the URB */ + usb_fill_bulk_urb(devinfo->bulk_urb, devinfo->usbdev, + devinfo->tx_pipe, buffer, len, + (usb_complete_t)brcmf_usb_sync_complete, devinfo); + + devinfo->bulk_urb->transfer_flags |= URB_ZERO_PACKET; + + ret = usb_submit_urb(devinfo->bulk_urb, GFP_ATOMIC); + if (ret) { + brcmf_dbg(ERROR, "usb_submit_urb failed %d\n", ret); + return ret; + } + ret = brcmf_usb_sync_wait(devinfo, BRCMF_USB_SYNC_TIMEOUT); + return ret; +} + +static int +brcmf_usb_dl_writeimage(struct brcmf_usbdev_info *devinfo, u8 *fw, int fwlen) +{ + unsigned int sendlen, sent, dllen; + char *bulkchunk = NULL, *dlpos; + struct rdl_state_le state; + u32 rdlstate, rdlbytes; + int err = 0; + brcmf_dbg(TRACE, "fw %p, len %d\n", fw, fwlen); + + bulkchunk = kmalloc(RDL_CHUNK, GFP_ATOMIC); + if (bulkchunk == NULL) { + err = -ENOMEM; + goto fail; + } + + /* 1) Prepare USB boot loader for runtime image */ + brcmf_usb_dl_cmd(devinfo, DL_START, &state, + sizeof(struct rdl_state_le)); + + rdlstate = le32_to_cpu(state.state); + rdlbytes = le32_to_cpu(state.bytes); + + /* 2) Check we are in the Waiting state */ + if (rdlstate != DL_WAITING) { + brcmf_dbg(ERROR, "Failed to DL_START\n"); + err = -EINVAL; + goto fail; + } + sent = 0; + dlpos = fw; + dllen = fwlen; + + /* Get chip id and rev */ + while (rdlbytes != dllen) { + /* Wait until the usb device reports it received all + * the bytes we sent */ + if ((rdlbytes == sent) && (rdlbytes != dllen)) { + if ((dllen-sent) < RDL_CHUNK) + sendlen = dllen-sent; + else + sendlen = RDL_CHUNK; + + /* simply avoid having to send a ZLP by ensuring we + * never have an even + * multiple of 64 + */ + if (!(sendlen % 64)) + sendlen -= 4; + + /* send data */ + memcpy(bulkchunk, dlpos, sendlen); + if (brcmf_usb_dl_send_bulk(devinfo, bulkchunk, + sendlen)) { + brcmf_dbg(ERROR, "send_bulk failed\n"); + err = -EINVAL; + goto fail; + } + + dlpos += sendlen; + sent += sendlen; + } + if (!brcmf_usb_dl_cmd(devinfo, DL_GETSTATE, &state, + sizeof(struct rdl_state_le))) { + brcmf_dbg(ERROR, "DL_GETSTATE Failed xxxx\n"); + err = -EINVAL; + goto fail; + } + + rdlstate = le32_to_cpu(state.state); + rdlbytes = le32_to_cpu(state.bytes); + + /* restart if an error is reported */ + if (rdlstate == DL_BAD_HDR || rdlstate == DL_BAD_CRC) { + brcmf_dbg(ERROR, "Bad Hdr or Bad CRC state %d\n", + rdlstate); + err = -EINVAL; + goto fail; + } + } + +fail: + kfree(bulkchunk); + brcmf_dbg(TRACE, "err=%d\n", err); + return err; +} + +static int brcmf_usb_dlstart(struct brcmf_usbdev_info *devinfo, u8 *fw, int len) +{ + int err; + + brcmf_dbg(TRACE, "enter\n"); + + if (devinfo == NULL) + return -EINVAL; + + if (devinfo->bus_pub.attrib.devid == 0xDEAD) + return -EINVAL; + + err = brcmf_usb_dl_writeimage(devinfo, fw, len); + if (err == 0) + devinfo->bus_pub.state = BCMFMAC_USB_STATE_DL_DONE; + else + devinfo->bus_pub.state = BCMFMAC_USB_STATE_DL_PENDING; + brcmf_dbg(TRACE, "exit: err=%d\n", err); + + return err; +} + +static int brcmf_usb_dlrun(struct brcmf_usbdev_info *devinfo) +{ + struct rdl_state_le state; + + brcmf_dbg(TRACE, "enter\n"); + if (!devinfo) + return -EINVAL; + + if (devinfo->bus_pub.attrib.devid == 0xDEAD) + return -EINVAL; + + /* Check we are runnable */ + brcmf_usb_dl_cmd(devinfo, DL_GETSTATE, &state, + sizeof(struct rdl_state_le)); + + /* Start the image */ + if (state.state == cpu_to_le32(DL_RUNNABLE)) { + if (!brcmf_usb_dl_cmd(devinfo, DL_GO, &state, + sizeof(struct rdl_state_le))) + return -ENODEV; + if (brcmf_usb_resetcfg(devinfo)) + return -ENODEV; + /* The Dongle may go for re-enumeration. */ + } else { + brcmf_dbg(ERROR, "Dongle not runnable\n"); + return -EINVAL; + } + brcmf_dbg(TRACE, "exit\n"); + return 0; +} + +static bool brcmf_usb_chip_support(int chipid, int chiprev) +{ + switch(chipid) { + case 43235: + case 43236: + case 43238: + return (chiprev == 3); + default: + break; + } + return false; +} + +static int +brcmf_usb_fw_download(struct brcmf_usbdev_info *devinfo) +{ + struct brcmf_usb_attrib *attr; + int err; + + brcmf_dbg(TRACE, "enter\n"); + if (devinfo == NULL) + return -ENODEV; + + attr = &devinfo->bus_pub.attrib; + + if (!brcmf_usb_chip_support(attr->devid, attr->chiprev)) { + brcmf_dbg(ERROR, "unsupported chip %d rev %d\n", + attr->devid, attr->chiprev); + return -EINVAL; + } + + if (!devinfo->image) { + brcmf_dbg(ERROR, "No firmware!\n"); + return -ENOENT; + } + + err = brcmf_usb_dlstart(devinfo, + devinfo->image, devinfo->image_len); + if (err == 0) + err = brcmf_usb_dlrun(devinfo); + return err; +} + + +static void brcmf_usb_detach(const struct brcmf_usbdev *bus_pub) +{ + struct brcmf_usbdev_info *devinfo = + (struct brcmf_usbdev_info *)bus_pub; + + brcmf_dbg(TRACE, "devinfo %p\n", devinfo); + + /* store the image globally */ + g_image.data = devinfo->image; + g_image.len = devinfo->image_len; + + /* free the URBS */ + brcmf_usb_free_q(&devinfo->rx_freeq, false); + brcmf_usb_free_q(&devinfo->tx_freeq, false); + + usb_free_urb(devinfo->intr_urb); + usb_free_urb(devinfo->ctl_urb); + usb_free_urb(devinfo->bulk_urb); + + kfree(devinfo->tx_reqs); + kfree(devinfo->rx_reqs); + kfree(devinfo); +} + +#define TRX_MAGIC 0x30524448 /* "HDR0" */ +#define TRX_VERSION 1 /* Version 1 */ +#define TRX_MAX_LEN 0x3B0000 /* Max length */ +#define TRX_NO_HEADER 1 /* Do not write TRX header */ +#define TRX_MAX_OFFSET 3 /* Max number of individual files */ +#define TRX_UNCOMP_IMAGE 0x20 /* Trx contains uncompressed image */ + +struct trx_header_le { + __le32 magic; /* "HDR0" */ + __le32 len; /* Length of file including header */ + __le32 crc32; /* CRC from flag_version to end of file */ + __le32 flag_version; /* 0:15 flags, 16:31 version */ + __le32 offsets[TRX_MAX_OFFSET]; /* Offsets of partitions from start of + * header */ +}; + +static int check_file(const u8 *headers) +{ + struct trx_header_le *trx; + int actual_len = -1; + + /* Extract trx header */ + trx = (struct trx_header_le *) headers; + if (trx->magic != cpu_to_le32(TRX_MAGIC)) + return -1; + + headers += sizeof(struct trx_header_le); + + if (le32_to_cpu(trx->flag_version) & TRX_UNCOMP_IMAGE) { + actual_len = le32_to_cpu(trx->offsets[TRX_OFFSETS_DLFWLEN_IDX]); + return actual_len + sizeof(struct trx_header_le); + } + return -1; +} + +static int brcmf_usb_get_fw(struct brcmf_usbdev_info *devinfo) +{ + s8 *fwname; + const struct firmware *fw; + int err; + + devinfo->image = g_image.data; + devinfo->image_len = g_image.len; + + /* + * if we have an image we can leave here. + */ + if (devinfo->image) + return 0; + + fwname = BRCMF_USB_43236_FW_NAME; + + err = request_firmware(&fw, fwname, devinfo->dev); + if (!fw) { + brcmf_dbg(ERROR, "fail to request firmware %s\n", fwname); + return err; + } + if (check_file(fw->data) < 0) { + brcmf_dbg(ERROR, "invalid firmware %s\n", fwname); + return -EINVAL; + } + + devinfo->image = kmalloc(fw->size, GFP_ATOMIC); /* plus nvram */ + if (!devinfo->image) + return -ENOMEM; + + memcpy(devinfo->image, fw->data, fw->size); + devinfo->image_len = fw->size; + + release_firmware(fw); + return 0; +} + + +static +struct brcmf_usbdev *brcmf_usb_attach(int nrxq, int ntxq, struct device *dev) +{ + struct brcmf_usbdev_info *devinfo; + + devinfo = kzalloc(sizeof(struct brcmf_usbdev_info), GFP_ATOMIC); + if (devinfo == NULL) + return NULL; + + devinfo->bus_pub.nrxq = nrxq; + devinfo->rx_low_watermark = nrxq / 2; + devinfo->bus_pub.devinfo = devinfo; + devinfo->bus_pub.ntxq = ntxq; + + /* flow control when too many tx urbs posted */ + devinfo->tx_low_watermark = ntxq / 4; + devinfo->tx_high_watermark = devinfo->tx_low_watermark * 3; + devinfo->dev = dev; + devinfo->usbdev = usbdev_probe_info.usb; + devinfo->tx_pipe = usbdev_probe_info.tx_pipe; + devinfo->rx_pipe = usbdev_probe_info.rx_pipe; + devinfo->rx_pipe2 = usbdev_probe_info.rx_pipe2; + devinfo->intr_pipe = usbdev_probe_info.intr_pipe; + + devinfo->interval = usbdev_probe_info.interval; + devinfo->intr_size = usbdev_probe_info.intr_size; + + memcpy(&devinfo->probe_info, &usbdev_probe_info, + sizeof(struct brcmf_usb_probe_info)); + devinfo->bus_pub.bus_mtu = BRCMF_USB_MAX_PKT_SIZE; + + /* Initialize other structure content */ + init_waitqueue_head(&devinfo->ioctl_resp_wait); + + /* Initialize the spinlocks */ + spin_lock_init(&devinfo->qlock); + + INIT_LIST_HEAD(&devinfo->rx_freeq); + INIT_LIST_HEAD(&devinfo->rx_postq); + + INIT_LIST_HEAD(&devinfo->tx_freeq); + INIT_LIST_HEAD(&devinfo->tx_postq); + + devinfo->rx_reqs = brcmf_usbdev_qinit(&devinfo->rx_freeq, nrxq); + if (!devinfo->rx_reqs) + goto error; + + devinfo->tx_reqs = brcmf_usbdev_qinit(&devinfo->tx_freeq, ntxq); + if (!devinfo->tx_reqs) + goto error; + + devinfo->intr_urb = usb_alloc_urb(0, GFP_ATOMIC); + if (!devinfo->intr_urb) { + brcmf_dbg(ERROR, "usb_alloc_urb (intr) failed\n"); + goto error; + } + devinfo->ctl_urb = usb_alloc_urb(0, GFP_ATOMIC); + if (!devinfo->ctl_urb) { + brcmf_dbg(ERROR, "usb_alloc_urb (ctl) failed\n"); + goto error; + } + devinfo->rxctl_deferrespok = 0; + + devinfo->bulk_urb = usb_alloc_urb(0, GFP_ATOMIC); + if (!devinfo->bulk_urb) { + brcmf_dbg(ERROR, "usb_alloc_urb (bulk) failed\n"); + goto error; + } + + init_waitqueue_head(&devinfo->wait); + if (!brcmf_usb_dlneeded(devinfo)) + return &devinfo->bus_pub; + + brcmf_dbg(TRACE, "start fw downloading\n"); + if (brcmf_usb_get_fw(devinfo)) + goto error; + + if (brcmf_usb_fw_download(devinfo)) + goto error; + + return &devinfo->bus_pub; + +error: + brcmf_dbg(ERROR, "failed!\n"); + brcmf_usb_detach(&devinfo->bus_pub); + return NULL; +} + +static int brcmf_usb_probe_cb(struct device *dev, const char *desc, + u32 bustype, u32 hdrlen) +{ + struct brcmf_bus *bus = NULL; + struct brcmf_usbdev *bus_pub = NULL; + int ret; + + + bus_pub = brcmf_usb_attach(BRCMF_USB_NRXQ, BRCMF_USB_NTXQ, dev); + if (!bus_pub) { + ret = -ENODEV; + goto fail; + } + + bus = kzalloc(sizeof(struct brcmf_bus), GFP_ATOMIC); + if (!bus) { + ret = -ENOMEM; + goto fail; + } + + bus_pub->bus = bus; + bus->brcmf_bus_txdata = brcmf_usb_tx; + bus->brcmf_bus_init = brcmf_usb_up; + bus->brcmf_bus_stop = brcmf_usb_down; + bus->brcmf_bus_txctl = brcmf_usb_tx_ctlpkt; + bus->brcmf_bus_rxctl = brcmf_usb_rx_ctlpkt; + bus->type = bustype; + bus->bus_priv.usb = bus_pub; + dev_set_drvdata(dev, bus); + + /* Attach to the common driver interface */ + ret = brcmf_attach(hdrlen, dev); + if (ret) { + brcmf_dbg(ERROR, "dhd_attach failed\n"); + goto fail; + } + + ret = brcmf_bus_start(dev); + if (ret == -ENOLINK) { + brcmf_dbg(ERROR, "dongle is not responding\n"); + brcmf_detach(dev); + goto fail; + } + + /* add interface and open for business */ + ret = brcmf_add_if(dev, 0, "wlan%d", NULL); + if (ret) { + brcmf_dbg(ERROR, "Add primary net device interface failed!!\n"); + brcmf_detach(dev); + goto fail; + } + + return 0; +fail: + /* Release resources in reverse order */ + if (bus_pub) + brcmf_usb_detach(bus_pub); + kfree(bus); + return ret; +} + +static void +brcmf_usb_disconnect_cb(struct brcmf_usbdev *bus_pub) +{ + if (!bus_pub) + return; + brcmf_dbg(TRACE, "enter: bus_pub %p\n", bus_pub); + + brcmf_detach(bus_pub->devinfo->dev); + kfree(bus_pub->bus); + brcmf_usb_detach(bus_pub); + +} + +static int +brcmf_usb_probe(struct usb_interface *intf, const struct usb_device_id *id) +{ + int ep; + struct usb_endpoint_descriptor *endpoint; + int ret = 0; + struct usb_device *usb = interface_to_usbdev(intf); + int num_of_eps; + u8 endpoint_num; + + brcmf_dbg(TRACE, "enter\n"); + + usbdev_probe_info.usb = usb; + usbdev_probe_info.intf = intf; + + if (id != NULL) { + usbdev_probe_info.vid = id->idVendor; + usbdev_probe_info.pid = id->idProduct; + } + + usb_set_intfdata(intf, &usbdev_probe_info); + + /* 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) { + ret = -1; + goto fail; + } + + /* + * 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) { + ret = -1; + goto fail; + } + + /* Check interface */ + if (IFDESC(usb, CONTROL_IF).bInterfaceClass != USB_CLASS_VENDOR_SPEC || + IFDESC(usb, CONTROL_IF).bInterfaceSubClass != 2 || + IFDESC(usb, CONTROL_IF).bInterfaceProtocol != 0xff) { + brcmf_dbg(ERROR, "invalid control interface: class %d, subclass %d, proto %d\n", + IFDESC(usb, CONTROL_IF).bInterfaceClass, + IFDESC(usb, CONTROL_IF).bInterfaceSubClass, + IFDESC(usb, CONTROL_IF).bInterfaceProtocol); + ret = -1; + goto fail; + } + + /* Check control endpoint */ + endpoint = &IFEPDESC(usb, CONTROL_IF, 0); + if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) + != USB_ENDPOINT_XFER_INT) { + brcmf_dbg(ERROR, "invalid control endpoint %d\n", + endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK); + ret = -1; + goto fail; + } + + endpoint_num = endpoint->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; + usbdev_probe_info.intr_pipe = usb_rcvintpipe(usb, endpoint_num); + + usbdev_probe_info.rx_pipe = 0; + usbdev_probe_info.rx_pipe2 = 0; + usbdev_probe_info.tx_pipe = 0; + num_of_eps = IFDESC(usb, BULK_IF).bNumEndpoints - 1; + + /* Check data endpoints and get pipes */ + for (ep = 1; ep <= num_of_eps; ep++) { + endpoint = &IFEPDESC(usb, BULK_IF, ep); + if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != + USB_ENDPOINT_XFER_BULK) { + brcmf_dbg(ERROR, "invalid data endpoint %d\n", ep); + ret = -1; + goto fail; + } + + endpoint_num = endpoint->bEndpointAddress & + USB_ENDPOINT_NUMBER_MASK; + if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) + == USB_DIR_IN) { + if (!usbdev_probe_info.rx_pipe) { + usbdev_probe_info.rx_pipe = + usb_rcvbulkpipe(usb, endpoint_num); + } else { + usbdev_probe_info.rx_pipe2 = + usb_rcvbulkpipe(usb, endpoint_num); + } + } else { + usbdev_probe_info.tx_pipe = + usb_sndbulkpipe(usb, endpoint_num); + } + } + + /* Allocate interrupt URB and data buffer */ + /* RNDIS says 8-byte intr, our old drivers used 4-byte */ + if (IFEPDESC(usb, CONTROL_IF, 0).wMaxPacketSize == cpu_to_le16(16)) + usbdev_probe_info.intr_size = 8; + else + usbdev_probe_info.intr_size = 4; + + usbdev_probe_info.interval = IFEPDESC(usb, CONTROL_IF, 0).bInterval; + + usbdev_probe_info.device_speed = usb->speed; + if (usb->speed == USB_SPEED_HIGH) + brcmf_dbg(INFO, "Broadcom high speed USB wireless device detected\n"); + else + brcmf_dbg(INFO, "Broadcom full speed USB wireless device detected\n"); + + ret = brcmf_usb_probe_cb(&usb->dev, "", USB_BUS, 0); + if (ret) + goto fail; + + /* Success */ + return 0; + +fail: + brcmf_dbg(ERROR, "failed with errno %d\n", ret); + usb_set_intfdata(intf, NULL); + return ret; + +} + +static void +brcmf_usb_disconnect(struct usb_interface *intf) +{ + struct usb_device *usb = interface_to_usbdev(intf); + + brcmf_dbg(TRACE, "enter\n"); + brcmf_usb_disconnect_cb(brcmf_usb_get_buspub(&usb->dev)); + usb_set_intfdata(intf, NULL); +} + +/* + * only need to signal the bus being down and update the suspend state. + */ +static int brcmf_usb_suspend(struct usb_interface *intf, pm_message_t state) +{ + struct usb_device *usb = interface_to_usbdev(intf); + struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev); + + brcmf_dbg(TRACE, "enter\n"); + devinfo->bus_pub.state = BCMFMAC_USB_STATE_DOWN; + devinfo->suspend_state = USBOS_SUSPEND_STATE_SUSPENDED; + return 0; +} + +/* + * mark suspend state active and crank up the bus. + */ +static int brcmf_usb_resume(struct usb_interface *intf) +{ + struct usb_device *usb = interface_to_usbdev(intf); + struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev); + + brcmf_dbg(TRACE, "enter\n"); + devinfo->suspend_state = USBOS_SUSPEND_STATE_DEVICE_ACTIVE; + brcmf_bus_start(&usb->dev); + return 0; +} + +#define BRCMF_USB_VENDOR_ID_BROADCOM 0x0a5c +#define BRCMF_USB_DEVICE_ID_43236 0xbd17 +#define BRCMF_USB_DEVICE_ID_BCMFW 0x0bdc + +static struct usb_device_id brcmf_usb_devid_table[] = { + { USB_DEVICE(BRCMF_USB_VENDOR_ID_BROADCOM, BRCMF_USB_DEVICE_ID_43236) }, + /* special entry for device with firmware loaded and running */ + { USB_DEVICE(BRCMF_USB_VENDOR_ID_BROADCOM, BRCMF_USB_DEVICE_ID_BCMFW) }, + { } +}; +MODULE_DEVICE_TABLE(usb, brcmf_usb_devid_table); +MODULE_FIRMWARE(BRCMF_USB_43236_FW_NAME); + +/* TODO: suspend and resume entries */ +static struct usb_driver brcmf_usbdrvr = { + .name = KBUILD_MODNAME, + .probe = brcmf_usb_probe, + .disconnect = brcmf_usb_disconnect, + .id_table = brcmf_usb_devid_table, + .suspend = brcmf_usb_suspend, + .resume = brcmf_usb_resume, + .supports_autosuspend = 1 +}; + +void brcmf_usb_exit(void) +{ + usb_deregister(&brcmf_usbdrvr); + kfree(g_image.data); + g_image.data = NULL; + g_image.len = 0; +} + +int brcmf_usb_init(void) +{ + return usb_register(&brcmf_usbdrvr); +} |