2 * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
18 * Purpose: Handle USB control endpoint
25 * vnt_control_out - Write variable length bytes to MEM/BB/MAC/EEPROM
26 * vnt_control_in - Read variable length bytes from MEM/BB/MAC/EEPROM
27 * vnt_control_out_u8 - Write one byte to MEM/BB/MAC/EEPROM
28 * vnt_control_in_u8 - Read one byte from MEM/BB/MAC/EEPROM
31 * 04-05-2004 Jerry Chen: Initial release
32 * 11-24-2004 Warren Hsu: Add ControlvWriteByte,ControlvReadByte,ControlvMaskByte
43 #define USB_CTL_WAIT 500 /* ms */
45 int vnt_control_out(struct vnt_private *priv, u8 request, u16 value,
46 u16 index, u16 length, u8 *buffer)
50 if (test_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags))
51 return STATUS_FAILURE;
53 mutex_lock(&priv->usb_lock);
55 status = usb_control_msg(priv->usb,
56 usb_sndctrlpipe(priv->usb, 0), request, 0x40, value,
57 index, buffer, length, USB_CTL_WAIT);
59 mutex_unlock(&priv->usb_lock);
61 if (status < (int)length)
62 return STATUS_FAILURE;
64 return STATUS_SUCCESS;
67 void vnt_control_out_u8(struct vnt_private *priv, u8 reg, u8 reg_off, u8 data)
69 vnt_control_out(priv, MESSAGE_TYPE_WRITE,
70 reg_off, reg, sizeof(u8), &data);
73 int vnt_control_in(struct vnt_private *priv, u8 request, u16 value,
74 u16 index, u16 length, u8 *buffer)
78 if (test_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags))
79 return STATUS_FAILURE;
81 mutex_lock(&priv->usb_lock);
83 status = usb_control_msg(priv->usb,
84 usb_rcvctrlpipe(priv->usb, 0), request, 0xc0, value,
85 index, buffer, length, USB_CTL_WAIT);
87 mutex_unlock(&priv->usb_lock);
89 if (status < (int)length)
90 return STATUS_FAILURE;
92 return STATUS_SUCCESS;
95 void vnt_control_in_u8(struct vnt_private *priv, u8 reg, u8 reg_off, u8 *data)
97 vnt_control_in(priv, MESSAGE_TYPE_READ,
98 reg_off, reg, sizeof(u8), data);
101 static void vnt_start_interrupt_urb_complete(struct urb *urb)
103 struct vnt_private *priv = urb->context;
104 int status = urb->status;
113 priv->int_buf.in_use = false;
120 priv->int_buf.in_use = false;
122 dev_dbg(&priv->usb->dev, "%s status = %d\n", __func__, status);
124 vnt_int_process_data(priv);
127 status = usb_submit_urb(priv->interrupt_urb, GFP_ATOMIC);
129 dev_dbg(&priv->usb->dev, "Submit int URB failed %d\n", status);
131 priv->int_buf.in_use = true;
134 int vnt_start_interrupt_urb(struct vnt_private *priv)
136 int status = STATUS_FAILURE;
138 if (priv->int_buf.in_use)
139 return STATUS_FAILURE;
141 priv->int_buf.in_use = true;
143 usb_fill_int_urb(priv->interrupt_urb,
145 usb_rcvintpipe(priv->usb, 1),
146 priv->int_buf.data_buf,
148 vnt_start_interrupt_urb_complete,
152 status = usb_submit_urb(priv->interrupt_urb, GFP_ATOMIC);
154 dev_dbg(&priv->usb->dev, "Submit int URB failed %d\n", status);
155 priv->int_buf.in_use = false;
161 static void vnt_submit_rx_urb_complete(struct urb *urb)
163 struct vnt_rcb *rcb = urb->context;
164 struct vnt_private *priv = rcb->priv;
166 switch (urb->status) {
175 dev_dbg(&priv->usb->dev, "BULK In failed %d\n", urb->status);
179 if (urb->actual_length) {
180 if (vnt_rx_data(priv, rcb, urb->actual_length)) {
181 rcb->skb = dev_alloc_skb(priv->rx_buf_sz);
183 dev_dbg(&priv->usb->dev,
184 "Failed to re-alloc rx skb\n");
190 skb_push(rcb->skb, skb_headroom(rcb->skb));
191 skb_trim(rcb->skb, 0);
194 urb->transfer_buffer = skb_put(rcb->skb,
195 skb_tailroom(rcb->skb));
198 if (usb_submit_urb(urb, GFP_ATOMIC)) {
199 dev_dbg(&priv->usb->dev, "Failed to re submit rx skb\n");
205 int vnt_submit_rx_urb(struct vnt_private *priv, struct vnt_rcb *rcb)
208 struct urb *urb = rcb->urb;
211 dev_dbg(&priv->usb->dev, "rcb->skb is null\n");
215 usb_fill_bulk_urb(urb,
217 usb_rcvbulkpipe(priv->usb, 2),
218 skb_put(rcb->skb, skb_tailroom(rcb->skb)),
219 MAX_TOTAL_SIZE_WITH_ALL_HEADERS,
220 vnt_submit_rx_urb_complete,
223 status = usb_submit_urb(urb, GFP_ATOMIC);
225 dev_dbg(&priv->usb->dev, "Submit Rx URB failed %d\n", status);
226 return STATUS_FAILURE;
234 static void vnt_tx_context_complete(struct urb *urb)
236 struct vnt_usb_send_context *context = urb->context;
237 struct vnt_private *priv = context->priv;
239 switch (urb->status) {
241 dev_dbg(&priv->usb->dev, "Write %d bytes\n", context->buf_len);
246 context->in_use = false;
250 dev_dbg(&priv->usb->dev, "BULK Out failed %d\n", urb->status);
254 if (context->type == CONTEXT_DATA_PACKET)
255 ieee80211_wake_queues(priv->hw);
257 if (urb->status || context->type == CONTEXT_BEACON_PACKET) {
259 ieee80211_free_txskb(priv->hw, context->skb);
261 context->in_use = false;
265 int vnt_tx_context(struct vnt_private *priv,
266 struct vnt_usb_send_context *context)
269 struct urb *urb = context->urb;
271 if (test_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags)) {
272 context->in_use = false;
273 return STATUS_RESOURCES;
276 usb_fill_bulk_urb(urb,
278 usb_sndbulkpipe(priv->usb, 3),
281 vnt_tx_context_complete,
284 status = usb_submit_urb(urb, GFP_ATOMIC);
286 dev_dbg(&priv->usb->dev, "Submit Tx URB failed %d\n", status);
288 context->in_use = false;
289 return STATUS_FAILURE;
292 return STATUS_PENDING;