1 /* ZD1211 USB-WLAN driver for Linux
3 * Copyright (C) 2005-2007 Ulrich Kunitz <kune@deine-taler.de>
4 * Copyright (C) 2006-2007 Daniel Drake <dsd@gentoo.org>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 #include <linux/completion.h>
25 #include <linux/netdevice.h>
26 #include <linux/spinlock.h>
27 #include <linux/skbuff.h>
28 #include <linux/usb.h>
32 #define ZD_USB_TX_HIGH 5
33 #define ZD_USB_TX_LOW 2
50 USB_MAX_TRANSFER_SIZE = 4096, /* bytes */
51 /* FIXME: The original driver uses this value. We have to check,
52 * whether the MAX_TRANSFER_SIZE is sufficient and this needs only be
53 * used if one combined frame is split over two USB transactions.
55 USB_MAX_RX_SIZE = 4800, /* bytes */
56 USB_MAX_IOWRITE16_COUNT = 15,
57 USB_MAX_IOWRITE32_COUNT = USB_MAX_IOWRITE16_COUNT/2,
58 USB_MAX_IOREAD16_COUNT = 15,
59 USB_MAX_IOREAD32_COUNT = USB_MAX_IOREAD16_COUNT/2,
60 USB_MIN_RFWRITE_BIT_COUNT = 16,
61 USB_MAX_RFWRITE_BIT_COUNT = 28,
62 USB_MAX_EP_INT_BUFFER = 64,
63 USB_ZD1211B_BCD_DEVICE = 0x4810,
66 enum control_requests {
67 USB_REQ_WRITE_REGS = 0x21,
68 USB_REQ_READ_REGS = 0x22,
69 USB_REQ_WRITE_RF = 0x23,
70 USB_REQ_PROG_FLASH = 0x24,
71 USB_REQ_EEPROM_START = 0x0128, /* ? request is a byte */
72 USB_REQ_EEPROM_MID = 0x28,
73 USB_REQ_EEPROM_END = 0x0228, /* ? request is a byte */
74 USB_REQ_FIRMWARE_DOWNLOAD = 0x30,
75 USB_REQ_FIRMWARE_CONFIRM = 0x31,
76 USB_REQ_FIRMWARE_READ_DATA = 0x32,
79 struct usb_req_read_regs {
82 } __attribute__((packed));
87 } __attribute__((packed));
89 struct usb_req_write_regs {
91 struct reg_data reg_writes[0];
92 } __attribute__((packed));
100 struct usb_req_rfwrite {
104 /* 2: other (default) */
107 __le16 bit_values[0];
108 /* (CR203 & ~(RF_IF_LE | RF_CLK | RF_DATA)) | (bit ? RF_DATA : 0) */
109 } __attribute__((packed));
115 USB_INT_ID_REGS = 0x90,
116 USB_INT_ID_RETRY_FAILED = 0xa0,
120 USB_INT_READ_REGS_EN = 0x01,
123 struct usb_int_header {
124 u8 type; /* must always be 1 */
126 } __attribute__((packed));
128 struct usb_int_regs {
129 struct usb_int_header hdr;
130 struct reg_data regs[0];
131 } __attribute__((packed));
133 struct usb_int_retry_fail {
134 struct usb_int_header hdr;
139 } __attribute__((packed));
141 struct read_regs_int {
142 struct completion completion;
143 /* Stores the USB int structure and contains the USB address of the
144 * first requested register before request.
146 u8 buffer[USB_MAX_EP_INT_BUFFER];
161 struct zd_usb_interrupt {
162 struct read_regs_int read_regs;
166 u8 read_regs_enabled:1;
169 static inline struct usb_int_regs *get_read_regs(struct zd_usb_interrupt *intr)
171 return (struct usb_int_regs *)intr->read_regs.buffer;
174 #define RX_URBS_COUNT 5
178 u8 fragment[2*USB_MAX_RX_SIZE];
179 unsigned int fragment_length;
180 unsigned int usb_packet_size;
186 * struct zd_usb_tx - structure used for transmitting frames
187 * @lock: lock for transmission
188 * @free_urb_list: list of free URBs, contains all the URBs, which can be used
189 * @submitted_urbs: atomic integer that counts the URBs having sent to the
190 * device, which haven't been completed
191 * @enabled: enabled flag, indicates whether tx is enabled
192 * @stopped: indicates whether higher level tx queues are stopped
196 struct list_head free_urb_list;
202 /* Contains the usb parts. The structure doesn't require a lock because intf
203 * will not be changed after initialization.
206 struct zd_usb_interrupt intr;
209 struct usb_interface *intf;
210 u8 is_zd1211b:1, initialized:1;
213 #define zd_usb_dev(usb) (&usb->intf->dev)
215 static inline struct usb_device *zd_usb_to_usbdev(struct zd_usb *usb)
217 return interface_to_usbdev(usb->intf);
220 static inline struct ieee80211_hw *zd_intf_to_hw(struct usb_interface *intf)
222 return usb_get_intfdata(intf);
225 static inline struct ieee80211_hw *zd_usb_to_hw(struct zd_usb *usb)
227 return zd_intf_to_hw(usb->intf);
230 void zd_usb_init(struct zd_usb *usb, struct ieee80211_hw *hw,
231 struct usb_interface *intf);
232 int zd_usb_init_hw(struct zd_usb *usb);
233 void zd_usb_clear(struct zd_usb *usb);
235 int zd_usb_scnprint_id(struct zd_usb *usb, char *buffer, size_t size);
237 int zd_usb_enable_int(struct zd_usb *usb);
238 void zd_usb_disable_int(struct zd_usb *usb);
240 int zd_usb_enable_rx(struct zd_usb *usb);
241 void zd_usb_disable_rx(struct zd_usb *usb);
243 void zd_usb_enable_tx(struct zd_usb *usb);
244 void zd_usb_disable_tx(struct zd_usb *usb);
246 int zd_usb_tx(struct zd_usb *usb, struct sk_buff *skb);
248 int zd_usb_ioread16v(struct zd_usb *usb, u16 *values,
249 const zd_addr_t *addresses, unsigned int count);
251 static inline int zd_usb_ioread16(struct zd_usb *usb, u16 *value,
252 const zd_addr_t addr)
254 return zd_usb_ioread16v(usb, value, (const zd_addr_t *)&addr, 1);
257 int zd_usb_iowrite16v(struct zd_usb *usb, const struct zd_ioreq16 *ioreqs,
260 int zd_usb_rfwrite(struct zd_usb *usb, u32 value, u8 bits);
262 int zd_usb_read_fw(struct zd_usb *usb, zd_addr_t addr, u8 *data, u16 len);
264 extern struct workqueue_struct *zd_workqueue;
266 #endif /* _ZD_USB_H */