mwifiex: add support for Marvell USB8797 chipset
authorAmitkumar Karwar <akarwar@marvell.com>
Thu, 19 Apr 2012 03:08:28 +0000 (20:08 -0700)
committerJohn W. Linville <linville@tuxdriver.com>
Mon, 23 Apr 2012 19:34:08 +0000 (15:34 -0400)
This patch supports Avastar 88W8797 chipset with USB interface.

The corresponding firmware image file is located at:
"mrvl/usb8797_uapsta.bin"

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: Kiran Divekar <dkiran@marvell.com>
Signed-off-by: Frank Huang <frankh@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
17 files changed:
drivers/net/wireless/mwifiex/11n_aggr.c
drivers/net/wireless/mwifiex/Kconfig
drivers/net/wireless/mwifiex/Makefile
drivers/net/wireless/mwifiex/cmdevt.c
drivers/net/wireless/mwifiex/decl.h
drivers/net/wireless/mwifiex/fw.h
drivers/net/wireless/mwifiex/init.c
drivers/net/wireless/mwifiex/main.c
drivers/net/wireless/mwifiex/main.h
drivers/net/wireless/mwifiex/sta_cmd.c
drivers/net/wireless/mwifiex/sta_rx.c
drivers/net/wireless/mwifiex/sta_tx.c
drivers/net/wireless/mwifiex/txrx.c
drivers/net/wireless/mwifiex/usb.c [new file with mode: 0644]
drivers/net/wireless/mwifiex/usb.h [new file with mode: 0644]
drivers/net/wireless/mwifiex/util.c
drivers/net/wireless/mwifiex/wmm.c

index 9eefb2a0ce9f9bfc1bd94ee951cd4c44502ca94d..ab84eb94374905c166d6bdcd6c745db1992574fe 100644 (file)
@@ -233,21 +233,27 @@ mwifiex_11n_aggregate_pkt(struct mwifiex_private *priv,
 
        skb_push(skb_aggr, headroom);
 
-       /*
-        * Padding per MSDU will affect the length of next
-        * packet and hence the exact length of next packet
-        * is uncertain here.
-        *
-        * Also, aggregation of transmission buffer, while
-        * downloading the data to the card, wont gain much
-        * on the AMSDU packets as the AMSDU packets utilizes
-        * the transmission buffer space to the maximum
-        * (adapter->tx_buf_size).
-        */
-       tx_param.next_pkt_len = 0;
-
-       ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_TYPE_DATA,
-                                          skb_aggr, &tx_param);
+       if (adapter->iface_type == MWIFIEX_USB) {
+               adapter->data_sent = true;
+               ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_USB_EP_DATA,
+                                                  skb_aggr, NULL);
+       } else {
+               /*
+                * Padding per MSDU will affect the length of next
+                * packet and hence the exact length of next packet
+                * is uncertain here.
+                *
+                * Also, aggregation of transmission buffer, while
+                * downloading the data to the card, wont gain much
+                * on the AMSDU packets as the AMSDU packets utilizes
+                * the transmission buffer space to the maximum
+                * (adapter->tx_buf_size).
+                */
+               tx_param.next_pkt_len = 0;
+
+               ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_TYPE_DATA,
+                                                  skb_aggr, &tx_param);
+       }
        switch (ret) {
        case -EBUSY:
                spin_lock_irqsave(&priv->wmm.ra_list_spinlock, ra_list_flags);
index 2a078cea830a01b04237a646c5d9b73f84febd4e..7f91cc6947872029b3024b3c313064a1b1492c8f 100644 (file)
@@ -30,3 +30,14 @@ config MWIFIEX_PCIE
 
          If you choose to build it as a module, it will be called
          mwifiex_pcie.
+
+config MWIFIEX_USB
+       tristate "Marvell WiFi-Ex Driver for USB8797"
+       depends on MWIFIEX && USB
+       select FW_LOADER
+       ---help---
+         This adds support for wireless adapters based on Marvell
+         Avastar 88W8797 chipset with USB interface.
+
+         If you choose to build it as a module, it will be called
+         mwifiex_usb.
index b0257ad1bbedc3c0056e3ff600ad21b634aa0cdf..5c1a46bf1e11e525cc4bd7c3378bb03d4426f6b4 100644 (file)
@@ -42,3 +42,6 @@ obj-$(CONFIG_MWIFIEX_SDIO) += mwifiex_sdio.o
 
 mwifiex_pcie-y += pcie.o
 obj-$(CONFIG_MWIFIEX_PCIE) += mwifiex_pcie.o
+
+mwifiex_usb-y += usb.o
+obj-$(CONFIG_MWIFIEX_USB) += mwifiex_usb.o
index 07f6e0092552be8d02d28288d3f5c49aaef4f757..1710beffb93aabab7b3fee5aaea589cd68f56268 100644 (file)
@@ -139,6 +139,7 @@ static int mwifiex_dnld_cmd_to_fw(struct mwifiex_private *priv,
        uint16_t cmd_size;
        struct timeval tstamp;
        unsigned long flags;
+       __le32 tmp;
 
        if (!adapter || !cmd_node)
                return -1;
@@ -178,15 +179,28 @@ static int mwifiex_dnld_cmd_to_fw(struct mwifiex_private *priv,
                le16_to_cpu(*(__le16 *) ((u8 *) host_cmd + S_DS_GEN)), cmd_size,
                le16_to_cpu(host_cmd->seq_num));
 
-       skb_push(cmd_node->cmd_skb, INTF_HEADER_LEN);
-
-       ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_TYPE_CMD,
-                                          cmd_node->cmd_skb, NULL);
-
-       skb_pull(cmd_node->cmd_skb, INTF_HEADER_LEN);
+       if (adapter->iface_type == MWIFIEX_USB) {
+               tmp = cpu_to_le32(MWIFIEX_USB_TYPE_CMD);
+               skb_push(cmd_node->cmd_skb, MWIFIEX_TYPE_LEN);
+               memcpy(cmd_node->cmd_skb->data, &tmp, MWIFIEX_TYPE_LEN);
+               adapter->cmd_sent = true;
+               ret = adapter->if_ops.host_to_card(adapter,
+                                                  MWIFIEX_USB_EP_CMD_EVENT,
+                                                  cmd_node->cmd_skb, NULL);
+               skb_pull(cmd_node->cmd_skb, MWIFIEX_TYPE_LEN);
+               if (ret == -EBUSY)
+                       cmd_node->cmd_skb = NULL;
+       } else {
+               skb_push(cmd_node->cmd_skb, INTF_HEADER_LEN);
+               ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_TYPE_CMD,
+                                                  cmd_node->cmd_skb, NULL);
+               skb_pull(cmd_node->cmd_skb, INTF_HEADER_LEN);
+       }
 
        if (ret == -1) {
                dev_err(adapter->dev, "DNLD_CMD: host to card failed\n");
+               if (adapter->iface_type == MWIFIEX_USB)
+                       adapter->cmd_sent = false;
                if (cmd_node->wait_q_enabled)
                        adapter->cmd_wait_q.status = -1;
                mwifiex_insert_cmd_to_free_q(adapter, adapter->curr_cmd);
@@ -232,6 +246,9 @@ static int mwifiex_dnld_sleep_confirm_cmd(struct mwifiex_adapter *adapter)
        struct mwifiex_opt_sleep_confirm *sleep_cfm_buf =
                                (struct mwifiex_opt_sleep_confirm *)
                                                adapter->sleep_cfm->data;
+       struct sk_buff *sleep_cfm_tmp;
+       __le32 tmp;
+
        priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
 
        sleep_cfm_buf->seq_num =
@@ -240,10 +257,28 @@ static int mwifiex_dnld_sleep_confirm_cmd(struct mwifiex_adapter *adapter)
                                         priv->bss_type)));
        adapter->seq_num++;
 
-       skb_push(adapter->sleep_cfm, INTF_HEADER_LEN);
-       ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_TYPE_CMD,
-                                          adapter->sleep_cfm, NULL);
-       skb_pull(adapter->sleep_cfm, INTF_HEADER_LEN);
+       if (adapter->iface_type == MWIFIEX_USB) {
+               sleep_cfm_tmp =
+                       dev_alloc_skb(sizeof(struct mwifiex_opt_sleep_confirm)
+                                     + MWIFIEX_TYPE_LEN);
+               skb_put(sleep_cfm_tmp, sizeof(struct mwifiex_opt_sleep_confirm)
+                       + MWIFIEX_TYPE_LEN);
+               tmp = cpu_to_le32(MWIFIEX_USB_TYPE_CMD);
+               memcpy(sleep_cfm_tmp->data, &tmp, MWIFIEX_TYPE_LEN);
+               memcpy(sleep_cfm_tmp->data + MWIFIEX_TYPE_LEN,
+                      adapter->sleep_cfm->data,
+                      sizeof(struct mwifiex_opt_sleep_confirm));
+               ret = adapter->if_ops.host_to_card(adapter,
+                                                  MWIFIEX_USB_EP_CMD_EVENT,
+                                                  sleep_cfm_tmp, NULL);
+               if (ret != -EBUSY)
+                       dev_kfree_skb_any(sleep_cfm_tmp);
+       } else {
+               skb_push(adapter->sleep_cfm, INTF_HEADER_LEN);
+               ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_TYPE_CMD,
+                                                  adapter->sleep_cfm, NULL);
+               skb_pull(adapter->sleep_cfm, INTF_HEADER_LEN);
+       }
 
        if (ret == -1) {
                dev_err(adapter->dev, "SLEEP_CFM: failed\n");
@@ -343,7 +378,12 @@ int mwifiex_free_cmd_buffer(struct mwifiex_adapter *adapter)
                }
                if (!cmd_array[i].resp_skb)
                        continue;
-               dev_kfree_skb_any(cmd_array[i].resp_skb);
+
+               if (adapter->iface_type == MWIFIEX_USB)
+                       adapter->if_ops.cmdrsp_complete(adapter,
+                                                       cmd_array[i].resp_skb);
+               else
+                       dev_kfree_skb_any(cmd_array[i].resp_skb);
        }
        /* Release struct cmd_ctrl_node */
        if (adapter->cmd_pool) {
@@ -1083,6 +1123,7 @@ mwifiex_process_hs_config(struct mwifiex_adapter *adapter)
                                                    MWIFIEX_BSS_ROLE_ANY),
                                   false);
 }
+EXPORT_SYMBOL_GPL(mwifiex_process_hs_config);
 
 /*
  * This function handles the command response of a sleep confirm command.
index be5fd1652e53a3d5930f14c42f4ec77439858373..d04aba4131dc9250c4d6c12203833b2d27cc740b 100644 (file)
@@ -53,6 +53,7 @@
 #define MWIFIEX_RATE_BITMAP_MCS127 159
 
 #define MWIFIEX_RX_DATA_BUF_SIZE     (4 * 1024)
+#define MWIFIEX_RX_CMD_BUF_SIZE             (2 * 1024)
 
 #define MWIFIEX_RTS_MIN_VALUE              (0)
 #define MWIFIEX_RTS_MAX_VALUE              (2347)
index 6b15449a4cb78bf809fef81285c07855f989d4d1..2a2cabadb9b590ac194dd1a8ccfab7c35a00b95e 100644 (file)
@@ -81,6 +81,11 @@ enum KEY_TYPE_ID {
 #define FIRMWARE_READY_SDIO                            0xfedc
 #define FIRMWARE_READY_PCIE                            0xfedcba00
 
+enum mwifiex_usb_ep {
+       MWIFIEX_USB_EP_CMD_EVENT = 1,
+       MWIFIEX_USB_EP_DATA = 2,
+};
+
 enum MWIFIEX_802_11_PRIVACY_FILTER {
        MWIFIEX_802_11_PRIV_FILTER_ACCEPT_ALL,
        MWIFIEX_802_11_PRIV_FILTER_8021X_WEP
index 0d55c5b542d7fc121f031e7b4be96a3bbb3529b7..d440c3eb640bd0f22887b8ee793627439221ca98 100644 (file)
@@ -188,10 +188,10 @@ static void mwifiex_init_adapter(struct mwifiex_adapter *adapter)
 
        adapter->cmd_sent = false;
 
-       if (adapter->iface_type == MWIFIEX_PCIE)
-               adapter->data_sent = false;
-       else
+       if (adapter->iface_type == MWIFIEX_SDIO)
                adapter->data_sent = true;
+       else
+               adapter->data_sent = false;
 
        adapter->cmd_resp_received = false;
        adapter->event_received = false;
@@ -379,7 +379,8 @@ mwifiex_free_adapter(struct mwifiex_adapter *adapter)
 
        dev_dbg(adapter->dev, "info: free scan table\n");
 
-       adapter->if_ops.cleanup_if(adapter);
+       if (adapter->if_ops.cleanup_if)
+               adapter->if_ops.cleanup_if(adapter);
 
        if (adapter->sleep_cfm)
                dev_kfree_skb_any(adapter->sleep_cfm);
@@ -419,6 +420,8 @@ int mwifiex_init_lock_list(struct mwifiex_adapter *adapter)
        spin_lock_init(&adapter->cmd_pending_q_lock);
        spin_lock_init(&adapter->scan_pending_q_lock);
 
+       skb_queue_head_init(&adapter->usb_rx_data_q);
+
        for (i = 0; i < adapter->priv_num; ++i) {
                INIT_LIST_HEAD(&adapter->bss_prio_tbl[i].bss_prio_head);
                adapter->bss_prio_tbl[i].bss_prio_cur = NULL;
@@ -574,6 +577,7 @@ mwifiex_shutdown_drv(struct mwifiex_adapter *adapter)
        struct mwifiex_private *priv;
        s32 i;
        unsigned long flags;
+       struct sk_buff *skb;
 
        /* mwifiex already shutdown */
        if (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY)
@@ -601,6 +605,18 @@ mwifiex_shutdown_drv(struct mwifiex_adapter *adapter)
 
        spin_lock_irqsave(&adapter->mwifiex_lock, flags);
 
+       if (adapter->if_ops.data_complete) {
+               while ((skb = skb_dequeue(&adapter->usb_rx_data_q))) {
+                       struct mwifiex_rxinfo *rx_info = MWIFIEX_SKB_RXCB(skb);
+
+                       priv = adapter->priv[rx_info->bss_num];
+                       if (priv)
+                               priv->stats.rx_dropped++;
+
+                       adapter->if_ops.data_complete(adapter, skb);
+               }
+       }
+
        /* Free adapter structure */
        mwifiex_free_adapter(adapter);
 
@@ -630,24 +646,28 @@ int mwifiex_dnld_fw(struct mwifiex_adapter *adapter,
        int ret;
        u32 poll_num = 1;
 
-       adapter->winner = 0;
+       if (adapter->if_ops.check_fw_status) {
+               adapter->winner = 0;
 
-       /* Check if firmware is already running */
-       ret = adapter->if_ops.check_fw_status(adapter, poll_num);
-       if (!ret) {
-               dev_notice(adapter->dev,
-                          "WLAN FW already running! Skip FW download\n");
-               goto done;
-       }
-       poll_num = MAX_FIRMWARE_POLL_TRIES;
-
-       /* Check if we are the winner for downloading FW */
-       if (!adapter->winner) {
-               dev_notice(adapter->dev,
-                          "Other intf already running! Skip FW download\n");
-               poll_num = MAX_MULTI_INTERFACE_POLL_TRIES;
-               goto poll_fw;
+               /* check if firmware is already running */
+               ret = adapter->if_ops.check_fw_status(adapter, poll_num);
+               if (!ret) {
+                       dev_notice(adapter->dev,
+                                  "WLAN FW already running! Skip FW dnld\n");
+                       goto done;
+               }
+
+               poll_num = MAX_FIRMWARE_POLL_TRIES;
+
+               /* check if we are the winner for downloading FW */
+               if (!adapter->winner) {
+                       dev_notice(adapter->dev,
+                                  "FW already running! Skip FW dnld\n");
+                       poll_num = MAX_MULTI_INTERFACE_POLL_TRIES;
+                       goto poll_fw;
+               }
        }
+
        if (pmfw) {
                /* Download firmware with helper */
                ret = adapter->if_ops.prog_fw(adapter, pmfw);
@@ -666,6 +686,8 @@ poll_fw:
        }
 done:
        /* re-enable host interrupt for mwifiex after fw dnld is successful */
-       adapter->if_ops.enable_int(adapter);
+       if (adapter->if_ops.enable_int)
+               adapter->if_ops.enable_int(adapter);
+
        return ret;
 }
index 245b7329e0c9254bbbeaba04ba63feb888aeb56e..be0f0e583f75485bd6780ccb3f810ef7eec3aca5 100644 (file)
@@ -58,8 +58,9 @@ static int mwifiex_register(void *card, struct mwifiex_if_ops *if_ops,
        memmove(&adapter->if_ops, if_ops, sizeof(struct mwifiex_if_ops));
 
        /* card specific initialization has been deferred until now .. */
-       if (adapter->if_ops.init_if(adapter))
-               goto error;
+       if (adapter->if_ops.init_if)
+               if (adapter->if_ops.init_if(adapter))
+                       goto error;
 
        adapter->priv_num = 0;
 
@@ -140,6 +141,7 @@ int mwifiex_main_process(struct mwifiex_adapter *adapter)
 {
        int ret = 0;
        unsigned long flags;
+       struct sk_buff *skb;
 
        spin_lock_irqsave(&adapter->main_proc_lock, flags);
 
@@ -161,7 +163,8 @@ process_start:
                if (adapter->int_status) {
                        if (adapter->hs_activated)
                                mwifiex_process_hs_config(adapter);
-                       adapter->if_ops.process_int_status(adapter);
+                       if (adapter->if_ops.process_int_status)
+                               adapter->if_ops.process_int_status(adapter);
                }
 
                /* Need to wake up the card ? */
@@ -174,6 +177,7 @@ process_start:
                        adapter->if_ops.wakeup(adapter);
                        continue;
                }
+
                if (IS_CARD_RX_RCVD(adapter)) {
                        adapter->pm_wakeup_fw_try = false;
                        if (adapter->ps_state == PS_STATE_SLEEP)
@@ -194,6 +198,11 @@ process_start:
                        }
                }
 
+               /* Check Rx data for USB */
+               if (adapter->iface_type == MWIFIEX_USB)
+                       while ((skb = skb_dequeue(&adapter->usb_rx_data_q)))
+                               mwifiex_handle_rx_packet(adapter, skb);
+
                /* Check for Cmd Resp */
                if (adapter->cmd_resp_received) {
                        adapter->cmd_resp_received = false;
@@ -317,7 +326,10 @@ static void mwifiex_fw_dpc(const struct firmware *firmware, void *context)
        fw.fw_buf = (u8 *) adapter->firmware->data;
        fw.fw_len = adapter->firmware->size;
 
-       ret = mwifiex_dnld_fw(adapter, &fw);
+       if (adapter->if_ops.dnld_fw)
+               ret = adapter->if_ops.dnld_fw(adapter, &fw);
+       else
+               ret = mwifiex_dnld_fw(adapter, &fw);
        if (ret == -1)
                goto done;
 
@@ -731,7 +743,8 @@ mwifiex_add_card(void *card, struct semaphore *sem,
 
 err_init_fw:
        pr_debug("info: %s: unregister device\n", __func__);
-       adapter->if_ops.unregister_dev(adapter);
+       if (adapter->if_ops.unregister_dev)
+               adapter->if_ops.unregister_dev(adapter);
 err_registerdev:
        adapter->surprise_removed = true;
        mwifiex_terminate_workqueue(adapter);
@@ -836,7 +849,8 @@ int mwifiex_remove_card(struct mwifiex_adapter *adapter, struct semaphore *sem)
 
        /* Unregister device */
        dev_dbg(adapter->dev, "info: unregister device\n");
-       adapter->if_ops.unregister_dev(adapter);
+       if (adapter->if_ops.unregister_dev)
+               adapter->if_ops.unregister_dev(adapter);
        /* Free adapter structure */
        dev_dbg(adapter->dev, "info: free adapter\n");
        mwifiex_free_adapter(adapter);
index a4000f9608d530c6a92d3d150e417fa51d498a37..324ad390cacd024b7a3be9220c2250422c245920 100644 (file)
@@ -92,9 +92,16 @@ enum {
 #define MWIFIEX_OUI_NOT_PRESENT                        0
 #define MWIFIEX_OUI_PRESENT                            1
 
+/*
+ * Do not check for data_received for USB, as data_received
+ * is handled in mwifiex_usb_recv for USB
+ */
 #define IS_CARD_RX_RCVD(adapter) (adapter->cmd_resp_received || \
-                                       adapter->event_received || \
-                                       adapter->data_received)
+                               adapter->event_received || \
+                               ((adapter->iface_type != MWIFIEX_USB) && \
+                               adapter->data_received) || \
+                               ((adapter->iface_type == MWIFIEX_USB) && \
+                               !skb_queue_empty(&adapter->usb_rx_data_q)))
 
 #define MWIFIEX_TYPE_CMD                               1
 #define MWIFIEX_TYPE_DATA                              0
@@ -110,6 +117,11 @@ enum {
 
 #define MWIFIEX_EVENT_HEADER_LEN           4
 
+#define MWIFIEX_TYPE_LEN                       4
+#define MWIFIEX_USB_TYPE_CMD                   0xF00DFACE
+#define MWIFIEX_USB_TYPE_DATA                  0xBEADC0DE
+#define MWIFIEX_USB_TYPE_EVENT                 0xBEEFFACE
+
 struct mwifiex_dbg {
        u32 num_cmd_host_to_card_failure;
        u32 num_cmd_sleep_cfm_host_to_card_failure;
@@ -162,6 +174,7 @@ enum MWIFIEX_PS_STATE {
 enum mwifiex_iface_type {
        MWIFIEX_SDIO,
        MWIFIEX_PCIE,
+       MWIFIEX_USB
 };
 
 struct mwifiex_add_ba_param {
@@ -546,6 +559,8 @@ struct mwifiex_if_ops {
        void (*cleanup_mpa_buf) (struct mwifiex_adapter *);
        int (*cmdrsp_complete) (struct mwifiex_adapter *, struct sk_buff *);
        int (*event_complete) (struct mwifiex_adapter *, struct sk_buff *);
+       int (*data_complete) (struct mwifiex_adapter *, struct sk_buff *);
+       int (*dnld_fw) (struct mwifiex_adapter *, struct mwifiex_fw_image *);
 };
 
 struct mwifiex_adapter {
@@ -608,6 +623,7 @@ struct mwifiex_adapter {
        struct list_head scan_pending_q;
        /* spin lock for scan_pending_q */
        spinlock_t scan_pending_q_lock;
+       struct sk_buff_head usb_rx_data_q;
        u32 scan_processing;
        u16 region_code;
        struct mwifiex_802_11d_domain_reg domain_reg;
index 1f7110577b9d9205d26b4aec4d2590b46db5a075..87ed2a1f6cd93c387dd3b5c22ab66c5dc40e9765 100644 (file)
@@ -1293,7 +1293,7 @@ int mwifiex_sta_init_cmd(struct mwifiex_private *priv, u8 first_sta)
        if (ret)
                return -1;
 
-       if (first_sta) {
+       if (first_sta && (priv->adapter->iface_type != MWIFIEX_USB)) {
                /* Enable auto deep sleep */
                auto_ds.auto_ds = DEEP_SLEEP_ON;
                auto_ds.idle_time = DEEP_SLEEP_IDLE_TIME;
index 750b695aca1282304e553cda77c5bb689cd40dfc..02ce3b77d3e772c4e4cde5615e806be500c4ef43 100644 (file)
@@ -145,7 +145,12 @@ int mwifiex_process_sta_rx_packet(struct mwifiex_adapter *adapter,
                        " rx_pkt_offset=%d, rx_pkt_length=%d\n", skb->len,
                       local_rx_pd->rx_pkt_offset, local_rx_pd->rx_pkt_length);
                priv->stats.rx_dropped++;
-               dev_kfree_skb_any(skb);
+
+               if (adapter->if_ops.data_complete)
+                       adapter->if_ops.data_complete(adapter, skb);
+               else
+                       dev_kfree_skb_any(skb);
+
                return ret;
        }
 
@@ -196,8 +201,12 @@ int mwifiex_process_sta_rx_packet(struct mwifiex_adapter *adapter,
                                             (u8) local_rx_pd->rx_pkt_type,
                                             skb);
 
-       if (ret || (rx_pkt_type == PKT_TYPE_BAR))
-               dev_kfree_skb_any(skb);
+       if (ret || (rx_pkt_type == PKT_TYPE_BAR)) {
+               if (adapter->if_ops.data_complete)
+                       adapter->if_ops.data_complete(adapter, skb);
+               else
+                       dev_kfree_skb_any(skb);
+       }
 
        if (ret)
                priv->stats.rx_dropped++;
index 7af534feb4205ce532d8fa5862c7aaedd0bd9b22..0a046d3a0c16d62effecfe17b9633369c7c6c3c8 100644 (file)
@@ -149,10 +149,14 @@ int mwifiex_send_null_packet(struct mwifiex_private *priv, u8 flags)
        local_tx_pd->bss_num = priv->bss_num;
        local_tx_pd->bss_type = priv->bss_type;
 
-       skb_push(skb, INTF_HEADER_LEN);
-
-       ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_TYPE_DATA,
-                                          skb, NULL);
+       if (adapter->iface_type == MWIFIEX_USB) {
+               ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_USB_EP_DATA,
+                                                  skb, NULL);
+       } else {
+               skb_push(skb, INTF_HEADER_LEN);
+               ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_TYPE_DATA,
+                                                  skb, NULL);
+       }
        switch (ret) {
        case -EBUSY:
                adapter->data_sent = true;
index d2af8cb98541fcbccf539cb5b51cb9cc5ed7c7db..e2faec4db10863c28c7156e922b14b2ca4fa02c9 100644 (file)
@@ -77,12 +77,23 @@ int mwifiex_process_tx(struct mwifiex_private *priv, struct sk_buff *skb,
                if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA)
                        local_tx_pd =
                                (struct txpd *) (head_ptr + INTF_HEADER_LEN);
-
-               ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_TYPE_DATA,
-                                                  skb, tx_param);
+               if (adapter->iface_type == MWIFIEX_USB) {
+                       adapter->data_sent = true;
+                       skb_pull(skb, INTF_HEADER_LEN);
+                       ret = adapter->if_ops.host_to_card(adapter,
+                                                          MWIFIEX_USB_EP_DATA,
+                                                          skb, NULL);
+               } else {
+                       ret = adapter->if_ops.host_to_card(adapter,
+                                                          MWIFIEX_TYPE_DATA,
+                                                          skb, tx_param);
+               }
        }
 
        switch (ret) {
+       case -ENOSR:
+               dev_err(adapter->dev, "data: -ENOSR is returned\n");
+               break;
        case -EBUSY:
                if ((GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA) &&
                    (adapter->pps_uapsd_mode) && (adapter->tx_lock_flag)) {
@@ -135,6 +146,9 @@ int mwifiex_write_data_complete(struct mwifiex_adapter *adapter,
        if (!priv)
                goto done;
 
+       if (adapter->iface_type == MWIFIEX_USB)
+               adapter->data_sent = false;
+
        mwifiex_set_trans_start(priv->netdev);
        if (!status) {
                priv->stats.tx_packets++;
@@ -162,4 +176,5 @@ done:
 
        return 0;
 }
+EXPORT_SYMBOL_GPL(mwifiex_write_data_complete);
 
diff --git a/drivers/net/wireless/mwifiex/usb.c b/drivers/net/wireless/mwifiex/usb.c
new file mode 100644 (file)
index 0000000..49ebf20
--- /dev/null
@@ -0,0 +1,1052 @@
+/*
+ * Marvell Wireless LAN device driver: USB specific handling
+ *
+ * Copyright (C) 2012, Marvell International Ltd.
+ *
+ * This software file (the "File") is distributed by Marvell International
+ * Ltd. under the terms of the GNU General Public License Version 2, June 1991
+ * (the "License").  You may use, redistribute and/or modify this File in
+ * accordance with the terms and conditions of the License, a copy of which
+ * is available by writing to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
+ * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
+ *
+ * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
+ * ARE EXPRESSLY DISCLAIMED.  The License provides additional details about
+ * this warranty disclaimer.
+ */
+
+#include "main.h"
+#include "usb.h"
+
+#define USB_VERSION    "1.0"
+
+static const char usbdriver_name[] = "usb8797";
+
+static u8 user_rmmod;
+static struct mwifiex_if_ops usb_ops;
+static struct semaphore add_remove_card_sem;
+
+static struct usb_device_id mwifiex_usb_table[] = {
+       {USB_DEVICE(USB8797_VID, USB8797_PID_1)},
+       {USB_DEVICE_AND_INTERFACE_INFO(USB8797_VID, USB8797_PID_2,
+                                      USB_CLASS_VENDOR_SPEC,
+                                      USB_SUBCLASS_VENDOR_SPEC, 0xff)},
+       { }     /* Terminating entry */
+};
+
+MODULE_DEVICE_TABLE(usb, mwifiex_usb_table);
+
+static int mwifiex_usb_submit_rx_urb(struct urb_context *ctx, int size);
+
+/* This function handles received packet. Necessary action is taken based on
+ * cmd/event/data.
+ */
+static int mwifiex_usb_recv(struct mwifiex_adapter *adapter,
+                           struct sk_buff *skb, u8 ep)
+{
+       struct device *dev = adapter->dev;
+       u32 recv_type;
+       __le32 tmp;
+
+       if (adapter->hs_activated)
+               mwifiex_process_hs_config(adapter);
+
+       if (skb->len < INTF_HEADER_LEN) {
+               dev_err(dev, "%s: invalid skb->len\n", __func__);
+               return -1;
+       }
+
+       switch (ep) {
+       case MWIFIEX_USB_EP_CMD_EVENT:
+               dev_dbg(dev, "%s: EP_CMD_EVENT\n", __func__);
+               skb_copy_from_linear_data(skb, &tmp, INTF_HEADER_LEN);
+               recv_type = le32_to_cpu(tmp);
+               skb_pull(skb, INTF_HEADER_LEN);
+
+               switch (recv_type) {
+               case MWIFIEX_USB_TYPE_CMD:
+                       if (skb->len > MWIFIEX_SIZE_OF_CMD_BUFFER) {
+                               dev_err(dev, "CMD: skb->len too large\n");
+                               return -1;
+                       } else if (!adapter->curr_cmd) {
+                               dev_dbg(dev, "CMD: no curr_cmd\n");
+                               if (adapter->ps_state == PS_STATE_SLEEP_CFM) {
+                                       mwifiex_process_sleep_confirm_resp(
+                                                       adapter, skb->data,
+                                                       skb->len);
+                                       return 0;
+                               }
+                               return -1;
+                       }
+
+                       adapter->curr_cmd->resp_skb = skb;
+                       adapter->cmd_resp_received = true;
+                       break;
+               case MWIFIEX_USB_TYPE_EVENT:
+                       if (skb->len < sizeof(u32)) {
+                               dev_err(dev, "EVENT: skb->len too small\n");
+                               return -1;
+                       }
+                       skb_copy_from_linear_data(skb, &tmp, sizeof(u32));
+                       adapter->event_cause = le32_to_cpu(tmp);
+                       skb_pull(skb, sizeof(u32));
+                       dev_dbg(dev, "event_cause %#x\n", adapter->event_cause);
+
+                       if (skb->len > MAX_EVENT_SIZE) {
+                               dev_err(dev, "EVENT: event body too large\n");
+                               return -1;
+                       }
+
+                       skb_copy_from_linear_data(skb, adapter->event_body,
+                                                 skb->len);
+                       adapter->event_received = true;
+                       adapter->event_skb = skb;
+                       break;
+               default:
+                       dev_err(dev, "unknown recv_type %#x\n", recv_type);
+                       return -1;
+               }
+               break;
+       case MWIFIEX_USB_EP_DATA:
+               dev_dbg(dev, "%s: EP_DATA\n", __func__);
+               if (skb->len > MWIFIEX_RX_DATA_BUF_SIZE) {
+                       dev_err(dev, "DATA: skb->len too large\n");
+                       return -1;
+               }
+               skb_queue_tail(&adapter->usb_rx_data_q, skb);
+               adapter->data_received = true;
+               break;
+       default:
+               dev_err(dev, "%s: unknown endport %#x\n", __func__, ep);
+               return -1;
+       }
+
+       return -EINPROGRESS;
+}
+
+static void mwifiex_usb_rx_complete(struct urb *urb)
+{
+       struct urb_context *context = (struct urb_context *)urb->context;
+       struct mwifiex_adapter *adapter = context->adapter;
+       struct sk_buff *skb = context->skb;
+       struct usb_card_rec *card;
+       int recv_length = urb->actual_length;
+       int size, status;
+
+       if (!adapter || !adapter->card) {
+               pr_err("mwifiex adapter or card structure is not valid\n");
+               return;
+       }
+
+       card = (struct usb_card_rec *)adapter->card;
+       if (card->rx_cmd_ep == context->ep)
+               atomic_dec(&card->rx_cmd_urb_pending);
+       else
+               atomic_dec(&card->rx_data_urb_pending);
+
+       if (recv_length) {
+               if (urb->status || (adapter->surprise_removed)) {
+                       dev_err(adapter->dev,
+                               "URB status is failed: %d\n", urb->status);
+                       /* Do not free skb in case of command ep */
+                       if (card->rx_cmd_ep != context->ep)
+                               dev_kfree_skb_any(skb);
+                       goto setup_for_next;
+               }
+               if (skb->len > recv_length)
+                       skb_trim(skb, recv_length);
+               else
+                       skb_put(skb, recv_length - skb->len);
+
+               atomic_inc(&adapter->rx_pending);
+               status = mwifiex_usb_recv(adapter, skb, context->ep);
+
+               dev_dbg(adapter->dev, "info: recv_length=%d, status=%d\n",
+                       recv_length, status);
+               if (status == -EINPROGRESS) {
+                       queue_work(adapter->workqueue, &adapter->main_work);
+
+                       /* urb for data_ep is re-submitted now;
+                        * urb for cmd_ep will be re-submitted in callback
+                        * mwifiex_usb_recv_complete
+                        */
+                       if (card->rx_cmd_ep == context->ep)
+                               return;
+               } else {
+                       atomic_dec(&adapter->rx_pending);
+                       if (status == -1)
+                               dev_err(adapter->dev,
+                                       "received data processing failed!\n");
+
+                       /* Do not free skb in case of command ep */
+                       if (card->rx_cmd_ep != context->ep)
+                               dev_kfree_skb_any(skb);
+               }
+       } else if (urb->status) {
+               if (!adapter->is_suspended) {
+                       dev_warn(adapter->dev,
+                                "Card is removed: %d\n", urb->status);
+                       adapter->surprise_removed = true;
+               }
+               dev_kfree_skb_any(skb);
+               return;
+       } else {
+               /* Do not free skb in case of command ep */
+               if (card->rx_cmd_ep != context->ep)
+                       dev_kfree_skb_any(skb);
+
+               /* fall through setup_for_next */
+       }
+
+setup_for_next:
+       if (card->rx_cmd_ep == context->ep)
+               size = MWIFIEX_RX_CMD_BUF_SIZE;
+       else
+               size = MWIFIEX_RX_DATA_BUF_SIZE;
+
+       mwifiex_usb_submit_rx_urb(context, size);
+
+       return;
+}
+
+static void mwifiex_usb_tx_complete(struct urb *urb)
+{
+       struct urb_context *context = (struct urb_context *)(urb->context);
+       struct mwifiex_adapter *adapter = context->adapter;
+       struct usb_card_rec *card = adapter->card;
+
+       dev_dbg(adapter->dev, "%s: status: %d\n", __func__, urb->status);
+
+       if (context->ep == card->tx_cmd_ep) {
+               dev_dbg(adapter->dev, "%s: CMD\n", __func__);
+               atomic_dec(&card->tx_cmd_urb_pending);
+               adapter->cmd_sent = false;
+       } else {
+               dev_dbg(adapter->dev, "%s: DATA\n", __func__);
+               atomic_dec(&card->tx_data_urb_pending);
+               mwifiex_write_data_complete(adapter, context->skb,
+                                           urb->status ? -1 : 0);
+       }
+
+       queue_work(adapter->workqueue, &adapter->main_work);
+
+       return;
+}
+
+static int mwifiex_usb_submit_rx_urb(struct urb_context *ctx, int size)
+{
+       struct mwifiex_adapter *adapter = ctx->adapter;
+       struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
+
+       if (card->rx_cmd_ep != ctx->ep) {
+               ctx->skb = dev_alloc_skb(size);
+               if (!ctx->skb) {
+                       dev_err(adapter->dev,
+                               "%s: dev_alloc_skb failed\n", __func__);
+                       return -ENOMEM;
+               }
+       }
+
+       usb_fill_bulk_urb(ctx->urb, card->udev,
+                         usb_rcvbulkpipe(card->udev, ctx->ep), ctx->skb->data,
+                         size, mwifiex_usb_rx_complete, (void *)ctx);
+
+       if (card->rx_cmd_ep == ctx->ep)
+               atomic_inc(&card->rx_cmd_urb_pending);
+       else
+               atomic_inc(&card->rx_data_urb_pending);
+
+       if (usb_submit_urb(ctx->urb, GFP_ATOMIC)) {
+               dev_err(adapter->dev, "usb_submit_urb failed\n");
+               dev_kfree_skb_any(ctx->skb);
+               ctx->skb = NULL;
+
+               if (card->rx_cmd_ep == ctx->ep)
+                       atomic_dec(&card->rx_cmd_urb_pending);
+               else
+                       atomic_dec(&card->rx_data_urb_pending);
+
+               return -1;
+       }
+
+       return 0;
+}
+
+static void mwifiex_usb_free(struct usb_card_rec *card)
+{
+       int i;
+
+       if (atomic_read(&card->rx_cmd_urb_pending) && card->rx_cmd.urb)
+               usb_kill_urb(card->rx_cmd.urb);
+
+       usb_free_urb(card->rx_cmd.urb);
+       card->rx_cmd.urb = NULL;
+
+       if (atomic_read(&card->rx_data_urb_pending))
+               for (i = 0; i < MWIFIEX_RX_DATA_URB; i++)
+                       if (card->rx_data_list[i].urb)
+                               usb_kill_urb(card->rx_data_list[i].urb);
+
+       for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) {
+               usb_free_urb(card->rx_data_list[i].urb);
+               card->rx_data_list[i].urb = NULL;
+       }
+
+       for (i = 0; i < MWIFIEX_TX_DATA_URB; i++) {
+               usb_free_urb(card->tx_data_list[i].urb);
+               card->tx_data_list[i].urb = NULL;
+       }
+
+       usb_free_urb(card->tx_cmd.urb);
+       card->tx_cmd.urb = NULL;
+
+       return;
+}
+
+/* This function probes an mwifiex device and registers it. It allocates
+ * the card structure, initiates the device registration and initialization
+ * procedure by adding a logical interface.
+ */
+static int mwifiex_usb_probe(struct usb_interface *intf,
+                            const struct usb_device_id *id)
+{
+       struct usb_device *udev = interface_to_usbdev(intf);
+       struct usb_host_interface *iface_desc = intf->cur_altsetting;
+       struct usb_endpoint_descriptor *epd;
+       int ret, i;
+       struct usb_card_rec *card;
+       u16 id_vendor, id_product, bcd_device, bcd_usb;
+
+       card = kzalloc(sizeof(struct usb_card_rec), GFP_KERNEL);
+       if (!card)
+               return -ENOMEM;
+
+       id_vendor = le16_to_cpu(udev->descriptor.idVendor);
+       id_product = le16_to_cpu(udev->descriptor.idProduct);
+       bcd_device = le16_to_cpu(udev->descriptor.bcdDevice);
+       bcd_usb = le16_to_cpu(udev->descriptor.bcdUSB);
+       pr_debug("info: VID/PID = %X/%X, Boot2 version = %X\n",
+                id_vendor, id_product, bcd_device);
+
+       /* PID_1 is used for firmware downloading only */
+       if (id_product == USB8797_PID_1)
+               card->usb_boot_state = USB8797_FW_DNLD;
+       else
+               card->usb_boot_state = USB8797_FW_READY;
+
+       card->udev = udev;
+       card->intf = intf;
+
+       pr_debug("info: bcdUSB=%#x Device Class=%#x SubClass=%#x Protocl=%#x\n",
+                udev->descriptor.bcdUSB, udev->descriptor.bDeviceClass,
+                udev->descriptor.bDeviceSubClass,
+                udev->descriptor.bDeviceProtocol);
+
+       for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
+               epd = &iface_desc->endpoint[i].desc;
+               if (usb_endpoint_dir_in(epd) &&
+                   usb_endpoint_num(epd) == MWIFIEX_USB_EP_CMD_EVENT &&
+                   usb_endpoint_xfer_bulk(epd)) {
+                       pr_debug("info: bulk IN: max pkt size: %d, addr: %d\n",
+                                le16_to_cpu(epd->wMaxPacketSize),
+                                epd->bEndpointAddress);
+                       card->rx_cmd_ep = usb_endpoint_num(epd);
+                       atomic_set(&card->rx_cmd_urb_pending, 0);
+               }
+               if (usb_endpoint_dir_in(epd) &&
+                   usb_endpoint_num(epd) == MWIFIEX_USB_EP_DATA &&
+                   usb_endpoint_xfer_bulk(epd)) {
+                       pr_debug("info: bulk IN: max pkt size: %d, addr: %d\n",
+                                le16_to_cpu(epd->wMaxPacketSize),
+                                epd->bEndpointAddress);
+                       card->rx_data_ep = usb_endpoint_num(epd);
+                       atomic_set(&card->rx_data_urb_pending, 0);
+               }
+               if (usb_endpoint_dir_out(epd) &&
+                   usb_endpoint_num(epd) == MWIFIEX_USB_EP_DATA &&
+                   usb_endpoint_xfer_bulk(epd)) {
+                       pr_debug("info: bulk OUT: max pkt size: %d, addr: %d\n",
+                                le16_to_cpu(epd->wMaxPacketSize),
+                                epd->bEndpointAddress);
+                       card->tx_data_ep = usb_endpoint_num(epd);
+                       atomic_set(&card->tx_data_urb_pending, 0);
+               }
+               if (usb_endpoint_dir_out(epd) &&
+                   usb_endpoint_num(epd) == MWIFIEX_USB_EP_CMD_EVENT &&
+                   usb_endpoint_xfer_bulk(epd)) {
+                       pr_debug("info: bulk OUT: max pkt size: %d, addr: %d\n",
+                                le16_to_cpu(epd->wMaxPacketSize),
+                                epd->bEndpointAddress);
+                       card->tx_cmd_ep = usb_endpoint_num(epd);
+                       atomic_set(&card->tx_cmd_urb_pending, 0);
+                       card->bulk_out_maxpktsize =
+                                       le16_to_cpu(epd->wMaxPacketSize);
+               }
+       }
+
+       usb_set_intfdata(intf, card);
+
+       ret = mwifiex_add_card(card, &add_remove_card_sem, &usb_ops,
+                              MWIFIEX_USB);
+       if (ret) {
+               pr_err("%s: mwifiex_add_card failed: %d\n", __func__, ret);
+               usb_reset_device(udev);
+               kfree(card);
+               return ret;
+       }
+
+       usb_get_dev(udev);
+
+       return 0;
+}
+
+/* Kernel needs to suspend all functions separately. Therefore all
+ * registered functions must have drivers with suspend and resume
+ * methods. Failing that the kernel simply removes the whole card.
+ *
+ * If already not suspended, this function allocates and sends a
+ * 'host sleep activate' request to the firmware and turns off the traffic.
+ */
+static int mwifiex_usb_suspend(struct usb_interface *intf, pm_message_t message)
+{
+       struct usb_card_rec *card = usb_get_intfdata(intf);
+       struct mwifiex_adapter *adapter;
+       int i;
+
+       if (!card || !card->adapter) {
+               pr_err("%s: card or card->adapter is NULL\n", __func__);
+               return 0;
+       }
+       adapter = card->adapter;
+
+       if (unlikely(adapter->is_suspended))
+               dev_warn(adapter->dev, "Device already suspended\n");
+
+       mwifiex_enable_hs(adapter);
+
+       /* 'is_suspended' flag indicates device is suspended.
+        * It must be set here before the usb_kill_urb() calls. Reason
+        * is in the complete handlers, urb->status(= -ENOENT) and
+        * this flag is used in combination to distinguish between a
+        * 'suspended' state and a 'disconnect' one.
+        */
+       adapter->is_suspended = true;
+
+       for (i = 0; i < adapter->priv_num; i++)
+               netif_carrier_off(adapter->priv[i]->netdev);
+
+       if (atomic_read(&card->rx_cmd_urb_pending) && card->rx_cmd.urb)
+               usb_kill_urb(card->rx_cmd.urb);
+
+       if (atomic_read(&card->rx_data_urb_pending))
+               for (i = 0; i < MWIFIEX_RX_DATA_URB; i++)
+                       if (card->rx_data_list[i].urb)
+                               usb_kill_urb(card->rx_data_list[i].urb);
+
+       for (i = 0; i < MWIFIEX_TX_DATA_URB; i++)
+               if (card->tx_data_list[i].urb)
+                       usb_kill_urb(card->tx_data_list[i].urb);
+
+       if (card->tx_cmd.urb)
+               usb_kill_urb(card->tx_cmd.urb);
+
+       return 0;
+}
+
+/* Kernel needs to suspend all functions separately. Therefore all
+ * registered functions must have drivers with suspend and resume
+ * methods. Failing that the kernel simply removes the whole card.
+ *
+ * If already not resumed, this function turns on the traffic and
+ * sends a 'host sleep cancel' request to the firmware.
+ */
+static int mwifiex_usb_resume(struct usb_interface *intf)
+{
+       struct usb_card_rec *card = usb_get_intfdata(intf);
+       struct mwifiex_adapter *adapter;
+       int i;
+
+       if (!card || !card->adapter) {
+               pr_err("%s: card or card->adapter is NULL\n", __func__);
+               return 0;
+       }
+       adapter = card->adapter;
+
+       if (unlikely(!adapter->is_suspended)) {
+               dev_warn(adapter->dev, "Device already resumed\n");
+               return 0;
+       }
+
+       /* Indicate device resumed. The netdev queue will be resumed only
+        * after the urbs have been re-submitted
+        */
+       adapter->is_suspended = false;
+
+       if (!atomic_read(&card->rx_data_urb_pending))
+               for (i = 0; i < MWIFIEX_RX_DATA_URB; i++)
+                       mwifiex_usb_submit_rx_urb(&card->rx_data_list[i],
+                                                 MWIFIEX_RX_DATA_BUF_SIZE);
+
+       if (!atomic_read(&card->rx_cmd_urb_pending)) {
+               card->rx_cmd.skb = dev_alloc_skb(MWIFIEX_RX_CMD_BUF_SIZE);
+               if (card->rx_cmd.skb)
+                       mwifiex_usb_submit_rx_urb(&card->rx_cmd,
+                                                 MWIFIEX_RX_CMD_BUF_SIZE);
+       }
+
+       for (i = 0; i < adapter->priv_num; i++)
+               if (adapter->priv[i]->media_connected)
+                       netif_carrier_on(adapter->priv[i]->netdev);
+
+       /* Disable Host Sleep */
+       if (adapter->hs_activated)
+               mwifiex_cancel_hs(mwifiex_get_priv(adapter,
+                                                  MWIFIEX_BSS_ROLE_ANY),
+                                 MWIFIEX_ASYNC_CMD);
+
+#ifdef CONFIG_PM
+       /* Resume handler may be called due to remote wakeup,
+        * force to exit suspend anyway
+        */
+       usb_disable_autosuspend(card->udev);
+#endif /* CONFIG_PM */
+
+       return 0;
+}
+
+static void mwifiex_usb_disconnect(struct usb_interface *intf)
+{
+       struct usb_card_rec *card = usb_get_intfdata(intf);
+       struct mwifiex_adapter *adapter;
+       int i;
+
+       if (!card || !card->adapter) {
+               pr_err("%s: card or card->adapter is NULL\n", __func__);
+               return;
+       }
+
+       adapter = card->adapter;
+       if (!adapter->priv_num)
+               return;
+
+       /* In case driver is removed when asynchronous FW downloading is
+        * in progress
+        */
+       wait_for_completion(&adapter->fw_load);
+
+       if (user_rmmod) {
+#ifdef CONFIG_PM
+               if (adapter->is_suspended)
+                       mwifiex_usb_resume(intf);
+#endif
+               for (i = 0; i < adapter->priv_num; i++)
+                       if ((GET_BSS_ROLE(adapter->priv[i]) ==
+                            MWIFIEX_BSS_ROLE_STA) &&
+                           adapter->priv[i]->media_connected)
+                               mwifiex_deauthenticate(adapter->priv[i], NULL);
+
+               mwifiex_init_shutdown_fw(mwifiex_get_priv(adapter,
+                                                         MWIFIEX_BSS_ROLE_ANY),
+                                        MWIFIEX_FUNC_SHUTDOWN);
+       }
+
+       mwifiex_usb_free(card);
+
+       dev_dbg(adapter->dev, "%s: removing card\n", __func__);
+       mwifiex_remove_card(adapter, &add_remove_card_sem);
+
+       usb_set_intfdata(intf, NULL);
+       usb_put_dev(interface_to_usbdev(intf));
+       kfree(card);
+
+       return;
+}
+
+static struct usb_driver mwifiex_usb_driver = {
+       .name = usbdriver_name,
+       .probe = mwifiex_usb_probe,
+       .disconnect = mwifiex_usb_disconnect,
+       .id_table = mwifiex_usb_table,
+       .suspend = mwifiex_usb_suspend,
+       .resume = mwifiex_usb_resume,
+       .supports_autosuspend = 1,
+};
+
+static int mwifiex_usb_tx_init(struct mwifiex_adapter *adapter)
+{
+       struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
+       int i;
+
+       card->tx_cmd.adapter = adapter;
+       card->tx_cmd.ep = card->tx_cmd_ep;
+
+       card->tx_cmd.urb = usb_alloc_urb(0, GFP_KERNEL);
+       if (!card->tx_cmd.urb) {
+               dev_err(adapter->dev, "tx_cmd.urb allocation failed\n");
+               return -ENOMEM;
+       }
+
+       card->tx_data_ix = 0;
+
+       for (i = 0; i < MWIFIEX_TX_DATA_URB; i++) {
+               card->tx_data_list[i].adapter = adapter;
+               card->tx_data_list[i].ep = card->tx_data_ep;
+
+               card->tx_data_list[i].urb = usb_alloc_urb(0, GFP_KERNEL);
+               if (!card->tx_data_list[i].urb) {
+                       dev_err(adapter->dev,
+                               "tx_data_list[] urb allocation failed\n");
+                       return -ENOMEM;
+               }
+       }
+
+       return 0;
+}
+
+static int mwifiex_usb_rx_init(struct mwifiex_adapter *adapter)
+{
+       struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
+       int i;
+
+       card->rx_cmd.adapter = adapter;
+       card->rx_cmd.ep = card->rx_cmd_ep;
+
+       card->rx_cmd.urb = usb_alloc_urb(0, GFP_KERNEL);
+       if (!card->rx_cmd.urb) {
+               dev_err(adapter->dev, "rx_cmd.urb allocation failed\n");
+               return -ENOMEM;
+       }
+
+       card->rx_cmd.skb = dev_alloc_skb(MWIFIEX_RX_CMD_BUF_SIZE);
+       if (!card->rx_cmd.skb) {
+               dev_err(adapter->dev, "rx_cmd.skb allocation failed\n");
+               return -ENOMEM;
+       }
+
+       if (mwifiex_usb_submit_rx_urb(&card->rx_cmd, MWIFIEX_RX_CMD_BUF_SIZE))
+               return -1;
+
+       for (i = 0; i < MWIFIEX_RX_DATA_URB; i++) {
+               card->rx_data_list[i].adapter = adapter;
+               card->rx_data_list[i].ep = card->rx_data_ep;
+
+               card->rx_data_list[i].urb = usb_alloc_urb(0, GFP_KERNEL);
+               if (!card->rx_data_list[i].urb) {
+                       dev_err(adapter->dev,
+                               "rx_data_list[] urb allocation failed\n");
+                       return -1;
+               }
+               if (mwifiex_usb_submit_rx_urb(&card->rx_data_list[i],
+                                             MWIFIEX_RX_DATA_BUF_SIZE))
+                       return -1;
+       }
+
+       return 0;
+}
+
+static int mwifiex_write_data_sync(struct mwifiex_adapter *adapter, u8 *pbuf,
+                                  u32 *len, u8 ep, u32 timeout)
+{
+       struct usb_card_rec *card = adapter->card;
+       int actual_length, ret;
+
+       if (!(*len % card->bulk_out_maxpktsize))
+               (*len)++;
+
+       /* Send the data block */
+       ret = usb_bulk_msg(card->udev, usb_sndbulkpipe(card->udev, ep), pbuf,
+                          *len, &actual_length, timeout);
+       if (ret) {
+               dev_err(adapter->dev, "usb_bulk_msg for tx failed: %d\n", ret);
+               ret = -1;
+       }
+
+       *len = actual_length;
+
+       return ret;
+}
+
+static int mwifiex_read_data_sync(struct mwifiex_adapter *adapter, u8 *pbuf,
+                                 u32 *len, u8 ep, u32 timeout)
+{
+       struct usb_card_rec *card = adapter->card;
+       int actual_length, ret;
+
+       /* Receive the data response */
+       ret = usb_bulk_msg(card->udev, usb_rcvbulkpipe(card->udev, ep), pbuf,
+                          *len, &actual_length, timeout);
+       if (ret) {
+               dev_err(adapter->dev, "usb_bulk_msg for rx failed: %d\n", ret);
+               ret = -1;
+       }
+
+       *len = actual_length;
+
+       return ret;
+}
+
+/* This function write a command/data packet to card. */
+static int mwifiex_usb_host_to_card(struct mwifiex_adapter *adapter, u8 ep,
+                                   struct sk_buff *skb,
+                                   struct mwifiex_tx_param *tx_param)
+{
+       struct usb_card_rec *card = adapter->card;
+       struct urb_context *context;
+       u8 *data = (u8 *)skb->data;
+       struct urb *tx_urb;
+
+       if (adapter->is_suspended) {
+               dev_err(adapter->dev,
+                       "%s: not allowed while suspended\n", __func__);
+               return -1;
+       }
+
+       if (adapter->surprise_removed) {
+               dev_err(adapter->dev, "%s: device removed\n", __func__);
+               return -1;
+       }
+
+       if (ep == card->tx_data_ep &&
+           atomic_read(&card->tx_data_urb_pending) >= MWIFIEX_TX_DATA_URB) {
+               return -EBUSY;
+       }
+
+       dev_dbg(adapter->dev, "%s: ep=%d\n", __func__, ep);
+
+       if (ep == card->tx_cmd_ep) {
+               context = &card->tx_cmd;
+       } else {
+               if (card->tx_data_ix >= MWIFIEX_TX_DATA_URB)
+                       card->tx_data_ix = 0;
+               context = &card->tx_data_list[card->tx_data_ix++];
+       }
+
+       context->adapter = adapter;
+       context->ep = ep;
+       context->skb = skb;
+       tx_urb = context->urb;
+
+       usb_fill_bulk_urb(tx_urb, card->udev, usb_sndbulkpipe(card->udev, ep),
+                         data, skb->len, mwifiex_usb_tx_complete,
+                         (void *)context);
+
+       tx_urb->transfer_flags |= URB_ZERO_PACKET;
+
+       if (ep == card->tx_cmd_ep)
+               atomic_inc(&card->tx_cmd_urb_pending);
+       else
+               atomic_inc(&card->tx_data_urb_pending);
+
+       if (usb_submit_urb(tx_urb, GFP_ATOMIC)) {
+               dev_err(adapter->dev, "%s: usb_submit_urb failed\n", __func__);
+               if (ep == card->tx_cmd_ep) {
+                       atomic_dec(&card->tx_cmd_urb_pending);
+               } else {
+                       atomic_dec(&card->tx_data_urb_pending);
+                       if (card->tx_data_ix)
+                               card->tx_data_ix--;
+                       else
+                               card->tx_data_ix = MWIFIEX_TX_DATA_URB;
+               }
+
+               return -1;
+       } else {
+               if (ep == card->tx_data_ep &&
+                   atomic_read(&card->tx_data_urb_pending) ==
+                                                       MWIFIEX_TX_DATA_URB)
+                       return -ENOSR;
+       }
+
+       return -EINPROGRESS;
+}
+
+/* This function register usb device and initialize parameter. */
+static int mwifiex_register_dev(struct mwifiex_adapter *adapter)
+{
+       struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
+
+       card->adapter = adapter;
+       adapter->dev = &card->udev->dev;
+       strcpy(adapter->fw_name, USB8797_DEFAULT_FW_NAME);
+
+       return 0;
+}
+
+/* This function reads one block of firmware data. */
+static int mwifiex_get_fw_data(struct mwifiex_adapter *adapter,
+                              u32 offset, u32 len, u8 *buf)
+{
+       if (!buf || !len)
+               return -1;
+
+       if (offset + len > adapter->firmware->size)
+               return -1;
+
+       memcpy(buf, adapter->firmware->data + offset, len);
+
+       return 0;
+}
+
+static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter,
+                                   struct mwifiex_fw_image *fw)
+{
+       int ret = 0;
+       u8 *firmware = fw->fw_buf, *recv_buff;
+       u32 retries = USB8797_FW_MAX_RETRY, dlen;
+       u32 fw_seqnum = 0, tlen = 0, dnld_cmd = 0;
+       struct fw_data *fwdata;
+       struct fw_sync_header sync_fw;
+       u8 check_winner = 1;
+
+       if (!firmware) {
+               dev_err(adapter->dev,
+                       "No firmware image found! Terminating download\n");
+               ret = -1;
+               goto fw_exit;
+       }
+
+       /* Allocate memory for transmit */
+       fwdata = kzalloc(FW_DNLD_TX_BUF_SIZE, GFP_KERNEL);
+       if (!fwdata)
+               goto fw_exit;
+
+       /* Allocate memory for receive */
+       recv_buff = kzalloc(FW_DNLD_RX_BUF_SIZE, GFP_KERNEL);
+       if (!recv_buff)
+               goto cleanup;
+
+       do {
+               /* Send pseudo data to check winner status first */
+               if (check_winner) {
+                       memset(&fwdata->fw_hdr, 0, sizeof(struct fw_header));
+                       dlen = 0;
+               } else {
+                       /* copy the header of the fw_data to get the length */
+                       if (firmware)
+                               memcpy(&fwdata->fw_hdr, &firmware[tlen],
+                                      sizeof(struct fw_header));
+                       else
+                               mwifiex_get_fw_data(adapter, tlen,
+                                                   sizeof(struct fw_header),
+                                                   (u8 *)&fwdata->fw_hdr);
+
+                       dlen = le32_to_cpu(fwdata->fw_hdr.data_len);
+                       dnld_cmd = le32_to_cpu(fwdata->fw_hdr.dnld_cmd);
+                       tlen += sizeof(struct fw_header);
+
+                       if (firmware)
+                               memcpy(fwdata->data, &firmware[tlen], dlen);
+                       else
+                               mwifiex_get_fw_data(adapter, tlen, dlen,
+                                                   (u8 *)fwdata->data);
+
+                       fwdata->seq_num = cpu_to_le32(fw_seqnum);
+                       tlen += dlen;
+               }
+
+               /* If the send/receive fails or CRC occurs then retry */
+               while (retries--) {
+                       u8 *buf = (u8 *)fwdata;
+                       u32 len = FW_DATA_XMIT_SIZE;
+
+                       /* send the firmware block */
+                       ret = mwifiex_write_data_sync(adapter, buf, &len,
+                                               MWIFIEX_USB_EP_CMD_EVENT,
+                                               MWIFIEX_USB_TIMEOUT);
+                       if (ret) {
+                               dev_err(adapter->dev,
+                                       "write_data_sync: failed: %d\n", ret);
+                               continue;
+                       }
+
+                       buf = recv_buff;
+                       len = FW_DNLD_RX_BUF_SIZE;
+
+                       /* Receive the firmware block response */
+                       ret = mwifiex_read_data_sync(adapter, buf, &len,
+                                               MWIFIEX_USB_EP_CMD_EVENT,
+                                               MWIFIEX_USB_TIMEOUT);
+                       if (ret) {
+                               dev_err(adapter->dev,
+                                       "read_data_sync: failed: %d\n", ret);
+                               continue;
+                       }
+
+                       memcpy(&sync_fw, recv_buff,
+                              sizeof(struct fw_sync_header));
+
+                       /* check 1st firmware block resp for highest bit set */
+                       if (check_winner) {
+                               if (le32_to_cpu(sync_fw.cmd) & 0x80000000) {
+                                       dev_warn(adapter->dev,
+                                                "USB is not the winner %#x\n",
+                                                sync_fw.cmd);
+
+                                       /* returning success */
+                                       ret = 0;
+                                       goto cleanup;
+                               }
+
+                               dev_dbg(adapter->dev,
+                                       "USB is the winner, start to download FW\n");
+
+                               check_winner = 0;
+                               break;
+                       }
+
+                       /* check the firmware block response for CRC errors */
+                       if (sync_fw.cmd) {
+                               dev_err(adapter->dev,
+                                       "FW received block with CRC %#x\n",
+                                       sync_fw.cmd);
+                               ret = -1;
+                               continue;
+                       }
+
+                       retries = USB8797_FW_MAX_RETRY;
+                       break;
+               }
+               fw_seqnum++;
+       } while ((dnld_cmd != FW_HAS_LAST_BLOCK) && retries);
+
+cleanup:
+       dev_dbg(adapter->dev, "%s: %d bytes downloaded\n", __func__, tlen);
+
+       kfree(recv_buff);
+       kfree(fwdata);
+
+       if (retries)
+               ret = 0;
+fw_exit:
+       return ret;
+}
+
+static int mwifiex_usb_dnld_fw(struct mwifiex_adapter *adapter,
+                       struct mwifiex_fw_image *fw)
+{
+       int ret;
+       struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
+
+       if (card->usb_boot_state == USB8797_FW_DNLD) {
+               ret = mwifiex_prog_fw_w_helper(adapter, fw);
+               if (ret)
+                       return -1;
+
+               /* Boot state changes after successful firmware download */
+               if (card->usb_boot_state == USB8797_FW_DNLD)
+                       return -1;
+       }
+
+       ret = mwifiex_usb_rx_init(adapter);
+       if (!ret)
+               ret = mwifiex_usb_tx_init(adapter);
+
+       return ret;
+}
+
+static void mwifiex_submit_rx_urb(struct mwifiex_adapter *adapter, u8 ep)
+{
+       struct usb_card_rec *card = (struct usb_card_rec *)adapter->card;
+
+       skb_push(card->rx_cmd.skb, INTF_HEADER_LEN);
+       if ((ep == card->rx_cmd_ep) &&
+           (!atomic_read(&card->rx_cmd_urb_pending)))
+               mwifiex_usb_submit_rx_urb(&card->rx_cmd,
+                                         MWIFIEX_RX_CMD_BUF_SIZE);
+
+       return;
+}
+
+static int mwifiex_usb_cmd_event_complete(struct mwifiex_adapter *adapter,
+                                      struct sk_buff *skb)
+{
+       atomic_dec(&adapter->rx_pending);
+       mwifiex_submit_rx_urb(adapter, MWIFIEX_USB_EP_CMD_EVENT);
+
+       return 0;
+}
+
+static int mwifiex_usb_data_complete(struct mwifiex_adapter *adapter,
+                                    struct sk_buff *skb)
+{
+       atomic_dec(&adapter->rx_pending);
+       dev_kfree_skb_any(skb);
+
+       return 0;
+}
+
+/* This function wakes up the card. */
+static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter)
+{
+       /* Simulation of HS_AWAKE event */
+       adapter->pm_wakeup_fw_try = false;
+       adapter->pm_wakeup_card_req = false;
+       adapter->ps_state = PS_STATE_AWAKE;
+
+       return 0;
+}
+
+static struct mwifiex_if_ops usb_ops = {
+       .register_dev =         mwifiex_register_dev,
+       .wakeup =               mwifiex_pm_wakeup_card,
+       .wakeup_complete =      mwifiex_pm_wakeup_card_complete,
+
+       /* USB specific */
+       .dnld_fw =              mwifiex_usb_dnld_fw,
+       .cmdrsp_complete =      mwifiex_usb_cmd_event_complete,
+       .event_complete =       mwifiex_usb_cmd_event_complete,
+       .data_complete =        mwifiex_usb_data_complete,
+       .host_to_card =         mwifiex_usb_host_to_card,
+};
+
+/* This function initializes the USB driver module.
+ *
+ * This initiates the semaphore and registers the device with
+ * USB bus.
+ */
+static int mwifiex_usb_init_module(void)
+{
+       int ret;
+
+       pr_debug("Marvell USB8797 Driver\n");
+
+       sema_init(&add_remove_card_sem, 1);
+
+       ret = usb_register(&mwifiex_usb_driver);
+       if (ret)
+               pr_err("Driver register failed!\n");
+       else
+               pr_debug("info: Driver registered successfully!\n");
+
+       return ret;
+}
+
+/* This function cleans up the USB driver.
+ *
+ * The following major steps are followed in .disconnect for cleanup:
+ *      - Resume the device if its suspended
+ *      - Disconnect the device if connected
+ *      - Shutdown the firmware
+ *      - Unregister the device from USB bus.
+ */
+static void mwifiex_usb_cleanup_module(void)
+{
+       if (!down_interruptible(&add_remove_card_sem))
+               up(&add_remove_card_sem);
+
+       /* set the flag as user is removing this module */
+       user_rmmod = 1;
+
+       usb_deregister(&mwifiex_usb_driver);
+}
+
+module_init(mwifiex_usb_init_module);
+module_exit(mwifiex_usb_cleanup_module);
+
+MODULE_AUTHOR("Marvell International Ltd.");
+MODULE_DESCRIPTION("Marvell WiFi-Ex USB Driver version" USB_VERSION);
+MODULE_VERSION(USB_VERSION);
+MODULE_LICENSE("GPL v2");
+MODULE_FIRMWARE("mrvl/usb8797_uapsta.bin");
diff --git a/drivers/net/wireless/mwifiex/usb.h b/drivers/net/wireless/mwifiex/usb.h
new file mode 100644 (file)
index 0000000..98c4316
--- /dev/null
@@ -0,0 +1,99 @@
+/*
+ * This file contains definitions for mwifiex USB interface driver.
+ *
+ * Copyright (C) 2012, Marvell International Ltd.
+ *
+ * This software file (the "File") is distributed by Marvell International
+ * Ltd. under the terms of the GNU General Public License Version 2, June 1991
+ * (the "License").  You may use, redistribute and/or modify this File in
+ * accordance with the terms and conditions of the License, a copy of which
+ * is available by writing to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
+ * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
+ *
+ * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
+ * ARE EXPRESSLY DISCLAIMED.  The License provides additional details about
+ * this warranty disclaimer.
+ */
+
+#ifndef _MWIFIEX_USB_H
+#define _MWIFIEX_USB_H
+
+#include <linux/usb.h>
+
+#define USB8797_VID            0x1286
+#define USB8797_PID_1          0x2043
+#define USB8797_PID_2          0x2044
+
+#define USB8797_FW_DNLD                1
+#define USB8797_FW_READY       2
+#define USB8797_FW_MAX_RETRY   3
+
+#define MWIFIEX_TX_DATA_URB    6
+#define MWIFIEX_RX_DATA_URB    6
+#define MWIFIEX_USB_TIMEOUT    100
+
+#define USB8797_DEFAULT_FW_NAME        "mrvl/usb8797_uapsta.bin"
+
+#define FW_DNLD_TX_BUF_SIZE    620
+#define FW_DNLD_RX_BUF_SIZE    2048
+#define FW_HAS_LAST_BLOCK      0x00000004
+
+#define FW_DATA_XMIT_SIZE \
+       (sizeof(struct fw_header) + dlen + sizeof(u32))
+
+struct urb_context {
+       struct mwifiex_adapter *adapter;
+       struct sk_buff *skb;
+       struct urb *urb;
+       u8 ep;
+};
+
+struct usb_card_rec {
+       struct mwifiex_adapter *adapter;
+       struct usb_device *udev;
+       struct usb_interface *intf;
+       u8 rx_cmd_ep;
+       struct urb_context rx_cmd;
+       atomic_t rx_cmd_urb_pending;
+       struct urb_context rx_data_list[MWIFIEX_RX_DATA_URB];
+       u8 usb_boot_state;
+       u8 rx_data_ep;
+       atomic_t rx_data_urb_pending;
+       u8 tx_data_ep;
+       u8 tx_cmd_ep;
+       atomic_t tx_data_urb_pending;
+       atomic_t tx_cmd_urb_pending;
+       int bulk_out_maxpktsize;
+       struct urb_context tx_cmd;
+       int tx_data_ix;
+       struct urb_context tx_data_list[MWIFIEX_TX_DATA_URB];
+};
+
+struct fw_header {
+       __le32 dnld_cmd;
+       __le32 base_addr;
+       __le32 data_len;
+       __le32 crc;
+};
+
+struct fw_sync_header {
+       __le32 cmd;
+       __le32 seq_num;
+};
+
+struct fw_data {
+       struct fw_header fw_hdr;
+       __le32 seq_num;
+       u8 data[1];
+};
+
+/* This function is called after the card has woken up. */
+static inline int
+mwifiex_pm_wakeup_card_complete(struct mwifiex_adapter *adapter)
+{
+       return 0;
+}
+
+#endif /*_MWIFIEX_USB_H */
index 6b399976d6c88351c58f14b84470d8fd6404eb7c..2864c74bdb6fc8b264815a57c039564fe9cbf0a0 100644 (file)
@@ -167,6 +167,28 @@ int mwifiex_recv_packet(struct mwifiex_adapter *adapter, struct sk_buff *skb)
        skb->dev = priv->netdev;
        skb->protocol = eth_type_trans(skb, priv->netdev);
        skb->ip_summed = CHECKSUM_NONE;
+
+       /* This is required only in case of 11n and USB as we alloc
+        * a buffer of 4K only if its 11N (to be able to receive 4K
+        * AMSDU packets). In case of SD we allocate buffers based
+        * on the size of packet and hence this is not needed.
+        *
+        * Modifying the truesize here as our allocation for each
+        * skb is 4K but we only receive 2K packets and this cause
+        * the kernel to start dropping packets in case where
+        * application has allocated buffer based on 2K size i.e.
+        * if there a 64K packet received (in IP fragments and
+        * application allocates 64K to receive this packet but
+        * this packet would almost double up because we allocate
+        * each 1.5K fragment in 4K and pass it up. As soon as the
+        * 64K limit hits kernel will start to drop rest of the
+        * fragments. Currently we fail the Filesndl-ht.scr script
+        * for UDP, hence this fix
+        */
+       if ((adapter->iface_type == MWIFIEX_USB) &&
+           (skb->truesize > MWIFIEX_RX_DATA_BUF_SIZE))
+               skb->truesize += (skb->len - MWIFIEX_RX_DATA_BUF_SIZE);
+
        priv->stats.rx_bytes += skb->len;
        priv->stats.rx_packets++;
        if (in_interrupt())
index 5a7316c6f125b04f06ff1a86f3724d79b52b301a..429a1dee2d2602096970f5790ed7790da1e1d454 100644 (file)
@@ -1120,11 +1120,19 @@ mwifiex_send_processed_packet(struct mwifiex_private *priv,
        tx_info = MWIFIEX_SKB_TXCB(skb);
 
        spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, ra_list_flags);
-       tx_param.next_pkt_len =
-               ((skb_next) ? skb_next->len +
-                sizeof(struct txpd) : 0);
-       ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_TYPE_DATA, skb,
-                                          &tx_param);
+
+       if (adapter->iface_type == MWIFIEX_USB) {
+               adapter->data_sent = true;
+               ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_USB_EP_DATA,
+                                                  skb, NULL);
+       } else {
+               tx_param.next_pkt_len =
+                       ((skb_next) ? skb_next->len +
+                        sizeof(struct txpd) : 0);
+               ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_TYPE_DATA,
+                                                  skb, &tx_param);
+       }
+
        switch (ret) {
        case -EBUSY:
                dev_dbg(adapter->dev, "data: -EBUSY is returned\n");