--- /dev/null
+/*
+ * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ *
+ * File: usbpipe.c
+ *
+ * Purpose: Handle USB control endpoint
+ *
+ * Author: Warren Hsu
+ *
+ * Date: Mar. 29, 2005
+ *
+ * Functions:
+ * vnt_control_out - Write variable length bytes to MEM/BB/MAC/EEPROM
+ * vnt_control_in - Read variable length bytes from MEM/BB/MAC/EEPROM
+ * vnt_control_out_u8 - Write one byte to MEM/BB/MAC/EEPROM
+ * vnt_control_in_u8 - Read one byte from MEM/BB/MAC/EEPROM
+ *
+ * Revision History:
+ * 04-05-2004 Jerry Chen: Initial release
+ * 11-24-2004 Warren Hsu: Add ControlvWriteByte,ControlvReadByte,ControlvMaskByte
+ *
+ */
+
+#include "int.h"
+#include "rxtx.h"
+#include "dpc.h"
+#include "desc.h"
+#include "device.h"
+#include "usbpipe.h"
+
+#define USB_CTL_WAIT 500 /* ms */
+
+int vnt_control_out(struct vnt_private *priv, u8 request, u16 value,
+ u16 index, u16 length, u8 *buffer)
+{
+ int status = 0;
+
+ if (test_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags))
+ return STATUS_FAILURE;
+
+ mutex_lock(&priv->usb_lock);
+
+ status = usb_control_msg(priv->usb,
+ usb_sndctrlpipe(priv->usb, 0), request, 0x40, value,
+ index, buffer, length, USB_CTL_WAIT);
+
+ mutex_unlock(&priv->usb_lock);
+
+ if (status < (int)length)
+ return STATUS_FAILURE;
+
+ return STATUS_SUCCESS;
+}
+
+void vnt_control_out_u8(struct vnt_private *priv, u8 reg, u8 reg_off, u8 data)
+{
+ vnt_control_out(priv, MESSAGE_TYPE_WRITE,
+ reg_off, reg, sizeof(u8), &data);
+}
+
+int vnt_control_in(struct vnt_private *priv, u8 request, u16 value,
+ u16 index, u16 length, u8 *buffer)
+{
+ int status;
+
+ if (test_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags))
+ return STATUS_FAILURE;
+
+ mutex_lock(&priv->usb_lock);
+
+ status = usb_control_msg(priv->usb,
+ usb_rcvctrlpipe(priv->usb, 0), request, 0xc0, value,
+ index, buffer, length, USB_CTL_WAIT);
+
+ mutex_unlock(&priv->usb_lock);
+
+ if (status < (int)length)
+ return STATUS_FAILURE;
+
+ return STATUS_SUCCESS;
+}
+
+void vnt_control_in_u8(struct vnt_private *priv, u8 reg, u8 reg_off, u8 *data)
+{
+ vnt_control_in(priv, MESSAGE_TYPE_READ,
+ reg_off, reg, sizeof(u8), data);
+}
+
+static void vnt_start_interrupt_urb_complete(struct urb *urb)
+{
+ struct vnt_private *priv = urb->context;
+ int status;
+
+ switch (urb->status) {
+ case 0:
+ case -ETIMEDOUT:
+ break;
+ case -ECONNRESET:
+ case -ENOENT:
+ case -ESHUTDOWN:
+ priv->int_buf.in_use = false;
+ return;
+ default:
+ break;
+ }
+
+ status = urb->status;
+
+ if (status != STATUS_SUCCESS) {
+ priv->int_buf.in_use = false;
+
+ dev_dbg(&priv->usb->dev, "%s status = %d\n", __func__, status);
+ } else {
+ vnt_int_process_data(priv);
+ }
+
+ status = usb_submit_urb(priv->interrupt_urb, GFP_ATOMIC);
+ if (status)
+ dev_dbg(&priv->usb->dev, "Submit int URB failed %d\n", status);
+ else
+ priv->int_buf.in_use = true;
+}
+
+int vnt_start_interrupt_urb(struct vnt_private *priv)
+{
+ int status = STATUS_FAILURE;
+
+ if (priv->int_buf.in_use == true)
+ return STATUS_FAILURE;
+
+ priv->int_buf.in_use = true;
+
+ usb_fill_int_urb(priv->interrupt_urb,
+ priv->usb,
+ usb_rcvintpipe(priv->usb, 1),
+ priv->int_buf.data_buf,
+ MAX_INTERRUPT_SIZE,
+ vnt_start_interrupt_urb_complete,
+ priv,
+ priv->int_interval);
+
+ status = usb_submit_urb(priv->interrupt_urb, GFP_ATOMIC);
+ if (status) {
+ dev_dbg(&priv->usb->dev, "Submit int URB failed %d\n", status);
+ priv->int_buf.in_use = false;
+ }
+
+ return status;
+}
+
+static void vnt_submit_rx_urb_complete(struct urb *urb)
+{
+ struct vnt_rcb *rcb = urb->context;
+ struct vnt_private *priv = rcb->priv;
+ unsigned long flags;
+
+ switch (urb->status) {
+ case 0:
+ break;
+ case -ECONNRESET:
+ case -ENOENT:
+ case -ESHUTDOWN:
+ return;
+ case -ETIMEDOUT:
+ default:
+ dev_dbg(&priv->usb->dev, "BULK In failed %d\n", urb->status);
+ break;
+ }
+
+ if (urb->actual_length) {
+ spin_lock_irqsave(&priv->lock, flags);
+
+ if (vnt_rx_data(priv, rcb, urb->actual_length)) {
+ rcb->skb = dev_alloc_skb(priv->rx_buf_sz);
+ if (!rcb->skb) {
+ dev_dbg(&priv->usb->dev,
+ "Failed to re-alloc rx skb\n");
+
+ rcb->in_use = false;
+ spin_unlock_irqrestore(&priv->lock, flags);
+ return;
+ }
+ } else {
+ skb_push(rcb->skb, skb_headroom(rcb->skb));
+ skb_trim(rcb->skb, 0);
+ }
+
+ urb->transfer_buffer = skb_put(rcb->skb,
+ skb_tailroom(rcb->skb));
+
+ spin_unlock_irqrestore(&priv->lock, flags);
+ }
+
+ if (usb_submit_urb(urb, GFP_ATOMIC)) {
+ dev_dbg(&priv->usb->dev, "Failed to re submit rx skb\n");
+
+ rcb->in_use = false;
+ }
+}
+
+int vnt_submit_rx_urb(struct vnt_private *priv, struct vnt_rcb *rcb)
+{
+ int status = 0;
+ struct urb *urb;
+
+ urb = rcb->urb;
+ if (rcb->skb == NULL) {
+ dev_dbg(&priv->usb->dev, "rcb->skb is null\n");
+ return status;
+ }
+
+ usb_fill_bulk_urb(urb,
+ priv->usb,
+ usb_rcvbulkpipe(priv->usb, 2),
+ skb_put(rcb->skb, skb_tailroom(rcb->skb)),
+ MAX_TOTAL_SIZE_WITH_ALL_HEADERS,
+ vnt_submit_rx_urb_complete,
+ rcb);
+
+ status = usb_submit_urb(urb, GFP_ATOMIC);
+ if (status != 0) {
+ dev_dbg(&priv->usb->dev, "Submit Rx URB failed %d\n", status);
+ return STATUS_FAILURE;
+ }
+
+ rcb->in_use = true;
+
+ return status;
+}
+
+static void vnt_tx_context_complete(struct urb *urb)
+{
+ struct vnt_usb_send_context *context = urb->context;
+ struct vnt_private *priv = context->priv;
+
+ switch (urb->status) {
+ case 0:
+ dev_dbg(&priv->usb->dev, "Write %d bytes\n", context->buf_len);
+ break;
+ case -ECONNRESET:
+ case -ENOENT:
+ case -ESHUTDOWN:
+ context->in_use = false;
+ return;
+ case -ETIMEDOUT:
+ default:
+ dev_dbg(&priv->usb->dev, "BULK Out failed %d\n", urb->status);
+ break;
+ }
+
+ if (context->type == CONTEXT_DATA_PACKET)
+ ieee80211_wake_queues(priv->hw);
+
+ if (urb->status || context->type == CONTEXT_BEACON_PACKET) {
+ if (context->skb)
+ ieee80211_free_txskb(priv->hw, context->skb);
+
+ context->in_use = false;
+ }
+}
+
+int vnt_tx_context(struct vnt_private *priv,
+ struct vnt_usb_send_context *context)
+{
+ int status;
+ struct urb *urb;
+
+ if (test_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags)) {
+ context->in_use = false;
+ return STATUS_RESOURCES;
+ }
+
+ urb = context->urb;
+
+ usb_fill_bulk_urb(urb,
+ priv->usb,
+ usb_sndbulkpipe(priv->usb, 3),
+ context->data,
+ context->buf_len,
+ vnt_tx_context_complete,
+ context);
+
+ status = usb_submit_urb(urb, GFP_ATOMIC);
+ if (status != 0) {
+ dev_dbg(&priv->usb->dev, "Submit Tx URB failed %d\n", status);
+
+ context->in_use = false;
+ return STATUS_FAILURE;
+ }
+
+ return STATUS_PENDING;
+}
Code Review / kvmfornfv.git / blobdiff