Return-Path: From: Amitkumar Karwar To: Kalle Valo , marcel@holtmann.org Cc: linux-wireless@vger.kernel.org, Amitkumar Karwar , Prameela Rani Garnepudi , linux-bluetooth@vger.kernel.org, Siva Rebbagondla Subject: [v5 1/8] rsi: add rx control block to handle rx packets in USB Date: Wed, 13 Dec 2017 18:12:50 +0530 Message-Id: <1513168977-2121-2-git-send-email-amitkarwar@gmail.com> In-Reply-To: <1513168977-2121-1-git-send-email-amitkarwar@gmail.com> References: <1513168977-2121-1-git-send-email-amitkarwar@gmail.com> Sender: linux-bluetooth-owner@vger.kernel.org List-ID: From: Prameela Rani Garnepudi Rx bluetooth endpoint shall be added in further patches. Rx control block is introduced here to handle Rx packets properly. Separate function is written to initialize the RX control blocks. Signed-off-by: Prameela Rani Garnepudi Signed-off-by: Siva Rebbagondla Signed-off-by: Amitkumar Karwar --- drivers/net/wireless/rsi/rsi_91x_main.c | 4 +- drivers/net/wireless/rsi/rsi_91x_sdio_ops.c | 2 +- drivers/net/wireless/rsi/rsi_91x_usb.c | 75 +++++++++++++++++++++++------ drivers/net/wireless/rsi/rsi_91x_usb_ops.c | 35 +++++++++----- drivers/net/wireless/rsi/rsi_common.h | 2 +- drivers/net/wireless/rsi/rsi_main.h | 2 +- drivers/net/wireless/rsi/rsi_usb.h | 10 +++- 7 files changed, 96 insertions(+), 34 deletions(-) diff --git a/drivers/net/wireless/rsi/rsi_91x_main.c b/drivers/net/wireless/rsi/rsi_91x_main.c index 0cb8e68..0413af8 100644 --- a/drivers/net/wireless/rsi/rsi_91x_main.c +++ b/drivers/net/wireless/rsi/rsi_91x_main.c @@ -137,7 +137,7 @@ static struct sk_buff *rsi_prepare_skb(struct rsi_common *common, * * Return: 0 on success, -1 on failure. */ -int rsi_read_pkt(struct rsi_common *common, s32 rcv_pkt_len) +int rsi_read_pkt(struct rsi_common *common, u8 *rx_pkt, s32 rcv_pkt_len) { u8 *frame_desc = NULL, extended_desc = 0; u32 index, length = 0, queueno = 0; @@ -146,7 +146,7 @@ int rsi_read_pkt(struct rsi_common *common, s32 rcv_pkt_len) index = 0; do { - frame_desc = &common->rx_data_pkt[index]; + frame_desc = &rx_pkt[index]; actual_length = *(u16 *)&frame_desc[0]; offset = *(u16 *)&frame_desc[2]; diff --git a/drivers/net/wireless/rsi/rsi_91x_sdio_ops.c b/drivers/net/wireless/rsi/rsi_91x_sdio_ops.c index 8e2a95c..9fbc0ef 100644 --- a/drivers/net/wireless/rsi/rsi_91x_sdio_ops.c +++ b/drivers/net/wireless/rsi/rsi_91x_sdio_ops.c @@ -118,7 +118,7 @@ static int rsi_process_pkt(struct rsi_common *common) goto fail; } - status = rsi_read_pkt(common, rcv_pkt_len); + status = rsi_read_pkt(common, common->rx_data_pkt, rcv_pkt_len); fail: kfree(common->rx_data_pkt); diff --git a/drivers/net/wireless/rsi/rsi_91x_usb.c b/drivers/net/wireless/rsi/rsi_91x_usb.c index 8f84438..6e99175 100644 --- a/drivers/net/wireless/rsi/rsi_91x_usb.c +++ b/drivers/net/wireless/rsi/rsi_91x_usb.c @@ -247,12 +247,13 @@ static int rsi_usb_reg_write(struct usb_device *usbdev, */ static void rsi_rx_done_handler(struct urb *urb) { - struct rsi_hw *adapter = urb->context; - struct rsi_91x_usbdev *dev = (struct rsi_91x_usbdev *)adapter->rsi_dev; + struct rx_usb_ctrl_block *rx_cb = urb->context; + struct rsi_91x_usbdev *dev = (struct rsi_91x_usbdev *)rx_cb->data; if (urb->status) return; + rx_cb->pend = 1; rsi_set_event(&dev->rx_thread.event); } @@ -262,10 +263,11 @@ static void rsi_rx_done_handler(struct urb *urb) * * Return: 0 on success, a negative error code on failure. */ -static int rsi_rx_urb_submit(struct rsi_hw *adapter) +static int rsi_rx_urb_submit(struct rsi_hw *adapter, u8 ep_num) { struct rsi_91x_usbdev *dev = (struct rsi_91x_usbdev *)adapter->rsi_dev; - struct urb *urb = dev->rx_usb_urb[0]; + struct rx_usb_ctrl_block *rx_cb = &dev->rx_cb[ep_num - 1]; + struct urb *urb = rx_cb->rx_urb; int status; usb_fill_bulk_urb(urb, @@ -275,7 +277,7 @@ static int rsi_rx_urb_submit(struct rsi_hw *adapter) urb->transfer_buffer, 3000, rsi_rx_done_handler, - adapter); + rx_cb); status = usb_submit_urb(urb, GFP_KERNEL); if (status) @@ -484,14 +486,54 @@ static struct rsi_host_intf_ops usb_host_intf_ops = { */ static void rsi_deinit_usb_interface(struct rsi_hw *adapter) { + u8 idx; + struct rsi_91x_usbdev *dev = (struct rsi_91x_usbdev *)adapter->rsi_dev; rsi_kill_thread(&dev->rx_thread); - usb_free_urb(dev->rx_usb_urb[0]); + + for (idx = 0; idx < MAX_RX_URBS; idx++) { + usb_free_urb(dev->rx_cb[idx].rx_urb); + kfree(dev->rx_cb[idx].rx_buffer); + } + kfree(adapter->priv->rx_data_pkt); kfree(dev->tx_buffer); } +static int rsi_usb_init_rx(struct rsi_hw *adapter) +{ + struct rsi_91x_usbdev *dev = (struct rsi_91x_usbdev *)adapter->rsi_dev; + struct rx_usb_ctrl_block *rx_cb; + u8 idx; + + for (idx = 0; idx < MAX_RX_URBS; idx++) { + rx_cb = &dev->rx_cb[idx]; + + rx_cb->rx_buffer = kzalloc(RSI_USB_BUF_SIZE * 2, + GFP_KERNEL | GFP_DMA); + if (!rx_cb->rx_buffer) + goto err; + + rx_cb->rx_urb = usb_alloc_urb(0, GFP_KERNEL); + if (!rx_cb->rx_urb) { + rsi_dbg(ERR_ZONE, "Failed alloc rx urb[%d]\n", idx); + goto err; + } + rx_cb->rx_urb->transfer_buffer = rx_cb->rx_buffer; + rx_cb->ep_num = idx + 1; + rx_cb->data = (void *)dev; + } + return 0; + +err: + for (idx = 0; idx < MAX_RX_URBS; idx++) { + kfree(dev->rx_cb[idx].rx_buffer); + kfree(dev->rx_cb[idx].rx_urb); + } + return -1; +} + /** * rsi_init_usb_interface() - This function initializes the usb interface. * @adapter: Pointer to the adapter structure. @@ -504,7 +546,7 @@ static int rsi_init_usb_interface(struct rsi_hw *adapter, { struct rsi_91x_usbdev *rsi_dev; struct rsi_common *common = adapter->priv; - int status; + int status, i; rsi_dev = kzalloc(sizeof(*rsi_dev), GFP_KERNEL); if (!rsi_dev) @@ -531,12 +573,12 @@ static int rsi_init_usb_interface(struct rsi_hw *adapter, status = -ENOMEM; goto fail_tx; } - rsi_dev->rx_usb_urb[0] = usb_alloc_urb(0, GFP_KERNEL); - if (!rsi_dev->rx_usb_urb[0]) { - status = -ENOMEM; - goto fail_rx; + + if (rsi_usb_init_rx(adapter)) { + rsi_dbg(ERR_ZONE, "Failed to init RX handle\n"); + return -ENOMEM; } - rsi_dev->rx_usb_urb[0]->transfer_buffer = adapter->priv->rx_data_pkt; + rsi_dev->tx_blk_size = 252; adapter->block_size = rsi_dev->tx_blk_size; @@ -564,9 +606,10 @@ static int rsi_init_usb_interface(struct rsi_hw *adapter, return 0; fail_thread: - usb_free_urb(rsi_dev->rx_usb_urb[0]); -fail_rx: - kfree(rsi_dev->tx_buffer); + for (i = 0; i < MAX_RX_URBS; i++) { + kfree(rsi_dev->rx_cb[i].rx_buffer); + kfree(rsi_dev->rx_cb[i].rx_urb); + } fail_tx: kfree(common->rx_data_pkt); return status; @@ -698,7 +741,7 @@ static int rsi_probe(struct usb_interface *pfunction, rsi_dbg(INIT_ZONE, "%s: Device Init Done\n", __func__); } - status = rsi_rx_urb_submit(adapter); + status = rsi_rx_urb_submit(adapter, WLAN_EP); if (status) goto err1; diff --git a/drivers/net/wireless/rsi/rsi_91x_usb_ops.c b/drivers/net/wireless/rsi/rsi_91x_usb_ops.c index 465692b..d0650ea 100644 --- a/drivers/net/wireless/rsi/rsi_91x_usb_ops.c +++ b/drivers/net/wireless/rsi/rsi_91x_usb_ops.c @@ -29,7 +29,8 @@ void rsi_usb_rx_thread(struct rsi_common *common) { struct rsi_hw *adapter = common->priv; struct rsi_91x_usbdev *dev = (struct rsi_91x_usbdev *)adapter->rsi_dev; - int status; + struct rx_usb_ctrl_block *rx_cb; + int status, idx; do { rsi_wait_event(&dev->rx_thread.event, EVENT_WAIT_FOREVER); @@ -37,20 +38,30 @@ void rsi_usb_rx_thread(struct rsi_common *common) if (atomic_read(&dev->rx_thread.thread_done)) goto out; - mutex_lock(&common->rx_lock); - status = rsi_read_pkt(common, 0); - if (status) { - rsi_dbg(ERR_ZONE, "%s: Failed To read data", __func__); + for (idx = 0; idx < MAX_RX_URBS; idx++) { + rx_cb = &dev->rx_cb[idx]; + if (!rx_cb->pend) + continue; + + mutex_lock(&common->rx_lock); + status = rsi_read_pkt(common, rx_cb->rx_buffer, 0); + if (status) { + rsi_dbg(ERR_ZONE, "%s: Failed To read data", + __func__); + mutex_unlock(&common->rx_lock); + break; + } + rx_cb->pend = 0; mutex_unlock(&common->rx_lock); - return; + + if (adapter->rx_urb_submit(adapter, rx_cb->ep_num)) { + rsi_dbg(ERR_ZONE, + "%s: Failed in urb submission", + __func__); + return; + } } - mutex_unlock(&common->rx_lock); rsi_reset_event(&dev->rx_thread.event); - if (adapter->rx_urb_submit(adapter)) { - rsi_dbg(ERR_ZONE, - "%s: Failed in urb submission", __func__); - return; - } } while (1); out: diff --git a/drivers/net/wireless/rsi/rsi_common.h b/drivers/net/wireless/rsi/rsi_common.h index d07dbba..1d8af41 100644 --- a/drivers/net/wireless/rsi/rsi_common.h +++ b/drivers/net/wireless/rsi/rsi_common.h @@ -82,7 +82,7 @@ void rsi_mac80211_detach(struct rsi_hw *hw); u16 rsi_get_connected_channel(struct ieee80211_vif *vif); struct rsi_hw *rsi_91x_init(void); void rsi_91x_deinit(struct rsi_hw *adapter); -int rsi_read_pkt(struct rsi_common *common, s32 rcv_pkt_len); +int rsi_read_pkt(struct rsi_common *common, u8 *rx_pkt, s32 rcv_pkt_len); #ifdef CONFIG_PM int rsi_config_wowlan(struct rsi_hw *adapter, struct cfg80211_wowlan *wowlan); #endif diff --git a/drivers/net/wireless/rsi/rsi_main.h b/drivers/net/wireless/rsi/rsi_main.h index 8cab630..ee469dc 100644 --- a/drivers/net/wireless/rsi/rsi_main.h +++ b/drivers/net/wireless/rsi/rsi_main.h @@ -343,7 +343,7 @@ struct rsi_hw { void *rsi_dev; struct rsi_host_intf_ops *host_intf_ops; int (*check_hw_queue_status)(struct rsi_hw *adapter, u8 q_num); - int (*rx_urb_submit)(struct rsi_hw *adapter); + int (*rx_urb_submit)(struct rsi_hw *adapter, u8 ep_num); int (*determine_event_timeout)(struct rsi_hw *adapter); }; diff --git a/drivers/net/wireless/rsi/rsi_usb.h b/drivers/net/wireless/rsi/rsi_usb.h index 891daea..7e781d5 100644 --- a/drivers/net/wireless/rsi/rsi_usb.h +++ b/drivers/net/wireless/rsi/rsi_usb.h @@ -39,12 +39,20 @@ #define RSI_USB_BUF_SIZE 4096 #define RSI_USB_CTRL_BUF_SIZE 0x04 +struct rx_usb_ctrl_block { + u8 *data; + struct urb *rx_urb; + u8 *rx_buffer; + u8 ep_num; + u8 pend; +}; + struct rsi_91x_usbdev { struct rsi_thread rx_thread; u8 endpoint; struct usb_device *usbdev; struct usb_interface *pfunction; - struct urb *rx_usb_urb[MAX_RX_URBS]; + struct rx_usb_ctrl_block rx_cb[MAX_RX_URBS]; u8 *tx_buffer; __le16 bulkin_size; u8 bulkin_endpoint_addr; -- 2.7.4