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,
44 #define USB_CTL_WAIT 500 /* ms */
46 int vnt_control_out(struct vnt_private *priv, u8 request, u16 value,
47 u16 index, u16 length, u8 *buffer)
51 if (test_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags))
52 return STATUS_FAILURE;
54 mutex_lock(&priv->usb_lock);
56 status = usb_control_msg(priv->usb,
57 usb_sndctrlpipe(priv->usb, 0), request, 0x40, value,
58 index, buffer, length, USB_CTL_WAIT);
60 mutex_unlock(&priv->usb_lock);
62 if (status < (int)length)
63 return STATUS_FAILURE;
65 return STATUS_SUCCESS;
68 void vnt_control_out_u8(struct vnt_private *priv, u8 reg, u8 reg_off, u8 data)
70 vnt_control_out(priv, MESSAGE_TYPE_WRITE,
71 reg_off, reg, sizeof(u8), &data);
74 int vnt_control_in(struct vnt_private *priv, u8 request, u16 value,
75 u16 index, u16 length, u8 *buffer)
79 if (test_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags))
80 return STATUS_FAILURE;
82 mutex_lock(&priv->usb_lock);
84 status = usb_control_msg(priv->usb,
85 usb_rcvctrlpipe(priv->usb, 0), request, 0xc0, value,
86 index, buffer, length, USB_CTL_WAIT);
88 mutex_unlock(&priv->usb_lock);
90 if (status < (int)length)
91 return STATUS_FAILURE;
93 return STATUS_SUCCESS;
96 void vnt_control_in_u8(struct vnt_private *priv, u8 reg, u8 reg_off, u8 *data)
98 vnt_control_in(priv, MESSAGE_TYPE_READ,
99 reg_off, reg, sizeof(u8), data);
102 static void vnt_start_interrupt_urb_complete(struct urb *urb)
104 struct vnt_private *priv = urb->context;
105 int status = urb->status;
114 priv->int_buf.in_use = false;
121 priv->int_buf.in_use = false;
123 dev_dbg(&priv->usb->dev, "%s status = %d\n", __func__, status);
125 vnt_int_process_data(priv);
128 status = usb_submit_urb(priv->interrupt_urb, GFP_ATOMIC);
130 dev_dbg(&priv->usb->dev, "Submit int URB failed %d\n", status);
132 priv->int_buf.in_use = true;
135 int vnt_start_interrupt_urb(struct vnt_private *priv)
137 int status = STATUS_FAILURE;
139 if (priv->int_buf.in_use)
140 return STATUS_FAILURE;
142 priv->int_buf.in_use = true;
144 usb_fill_int_urb(priv->interrupt_urb,
146 usb_rcvintpipe(priv->usb, 1),
147 priv->int_buf.data_buf,
149 vnt_start_interrupt_urb_complete,
153 status = usb_submit_urb(priv->interrupt_urb, GFP_ATOMIC);
155 dev_dbg(&priv->usb->dev, "Submit int URB failed %d\n", status);
156 priv->int_buf.in_use = false;
162 static void vnt_submit_rx_urb_complete(struct urb *urb)
164 struct vnt_rcb *rcb = urb->context;
165 struct vnt_private *priv = rcb->priv;
167 switch (urb->status) {
176 dev_dbg(&priv->usb->dev, "BULK In failed %d\n", urb->status);
180 if (urb->actual_length) {
181 if (vnt_rx_data(priv, rcb, urb->actual_length)) {
182 rcb->skb = dev_alloc_skb(priv->rx_buf_sz);
184 dev_dbg(&priv->usb->dev,
185 "Failed to re-alloc rx skb\n");
191 skb_push(rcb->skb, skb_headroom(rcb->skb));
192 skb_trim(rcb->skb, 0);
195 urb->transfer_buffer = skb_put(rcb->skb,
196 skb_tailroom(rcb->skb));
199 if (usb_submit_urb(urb, GFP_ATOMIC)) {
200 dev_dbg(&priv->usb->dev, "Failed to re submit rx skb\n");
206 int vnt_submit_rx_urb(struct vnt_private *priv, struct vnt_rcb *rcb)
209 struct urb *urb = rcb->urb;
212 dev_dbg(&priv->usb->dev, "rcb->skb is null\n");
216 usb_fill_bulk_urb(urb,
218 usb_rcvbulkpipe(priv->usb, 2),
219 skb_put(rcb->skb, skb_tailroom(rcb->skb)),
220 MAX_TOTAL_SIZE_WITH_ALL_HEADERS,
221 vnt_submit_rx_urb_complete,
224 status = usb_submit_urb(urb, GFP_ATOMIC);
226 dev_dbg(&priv->usb->dev, "Submit Rx URB failed %d\n", status);
227 return STATUS_FAILURE;
235 static void vnt_tx_context_complete(struct urb *urb)
237 struct vnt_usb_send_context *context = urb->context;
238 struct vnt_private *priv = context->priv;
240 switch (urb->status) {
242 dev_dbg(&priv->usb->dev, "Write %d bytes\n", context->buf_len);
247 context->in_use = false;
251 dev_dbg(&priv->usb->dev, "BULK Out failed %d\n", urb->status);
255 if (context->type == CONTEXT_DATA_PACKET)
256 ieee80211_wake_queues(priv->hw);
258 if (urb->status || context->type == CONTEXT_BEACON_PACKET) {
260 ieee80211_free_txskb(priv->hw, context->skb);
262 context->in_use = false;
266 int vnt_tx_context(struct vnt_private *priv,
267 struct vnt_usb_send_context *context)
270 struct urb *urb = context->urb;
272 if (test_bit(DEVICE_FLAGS_DISCONNECTED, &priv->flags)) {
273 context->in_use = false;
274 return STATUS_RESOURCES;
277 usb_fill_bulk_urb(urb,
279 usb_sndbulkpipe(priv->usb, 3),
282 vnt_tx_context_complete,
285 status = usb_submit_urb(urb, GFP_ATOMIC);
287 dev_dbg(&priv->usb->dev, "Submit Tx URB failed %d\n", status);
289 context->in_use = false;
290 return STATUS_FAILURE;
293 return STATUS_PENDING;