1 /* zd_usb.h: Header for USB interface implemented by ZD1211 chip
3 * This program is free software; you can redistribute it and/or modify
4 * it under the terms of the GNU General Public License as published by
5 * the Free Software Foundation; either version 2 of the License, or
6 * (at your option) any later version.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
13 * You should have received a copy of the GNU General Public License
14 * along with this program; if not, write to the Free Software
15 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 #include <linux/completion.h>
22 #include <linux/netdevice.h>
23 #include <linux/spinlock.h>
24 #include <linux/skbuff.h>
25 #include <linux/usb.h>
29 #define ZD_USB_TX_HIGH 5
30 #define ZD_USB_TX_LOW 2
47 USB_MAX_TRANSFER_SIZE = 4096, /* bytes */
48 /* FIXME: The original driver uses this value. We have to check,
49 * whether the MAX_TRANSFER_SIZE is sufficient and this needs only be
50 * used if one combined frame is split over two USB transactions.
52 USB_MAX_RX_SIZE = 4800, /* bytes */
53 USB_MAX_IOWRITE16_COUNT = 15,
54 USB_MAX_IOWRITE32_COUNT = USB_MAX_IOWRITE16_COUNT/2,
55 USB_MAX_IOREAD16_COUNT = 15,
56 USB_MAX_IOREAD32_COUNT = USB_MAX_IOREAD16_COUNT/2,
57 USB_MIN_RFWRITE_BIT_COUNT = 16,
58 USB_MAX_RFWRITE_BIT_COUNT = 28,
59 USB_MAX_EP_INT_BUFFER = 64,
60 USB_ZD1211B_BCD_DEVICE = 0x4810,
63 enum control_requests {
64 USB_REQ_WRITE_REGS = 0x21,
65 USB_REQ_READ_REGS = 0x22,
66 USB_REQ_WRITE_RF = 0x23,
67 USB_REQ_PROG_FLASH = 0x24,
68 USB_REQ_EEPROM_START = 0x0128, /* ? request is a byte */
69 USB_REQ_EEPROM_MID = 0x28,
70 USB_REQ_EEPROM_END = 0x0228, /* ? request is a byte */
71 USB_REQ_FIRMWARE_DOWNLOAD = 0x30,
72 USB_REQ_FIRMWARE_CONFIRM = 0x31,
73 USB_REQ_FIRMWARE_READ_DATA = 0x32,
76 struct usb_req_read_regs {
79 } __attribute__((packed));
84 } __attribute__((packed));
86 struct usb_req_write_regs {
88 struct reg_data reg_writes[0];
89 } __attribute__((packed));
97 struct usb_req_rfwrite {
101 /* 2: other (default) */
104 __le16 bit_values[0];
105 /* (CR203 & ~(RF_IF_LE | RF_CLK | RF_DATA)) | (bit ? RF_DATA : 0) */
106 } __attribute__((packed));
112 USB_INT_ID_REGS = 0x90,
113 USB_INT_ID_RETRY_FAILED = 0xa0,
117 USB_INT_READ_REGS_EN = 0x01,
120 struct usb_int_header {
121 u8 type; /* must always be 1 */
123 } __attribute__((packed));
125 struct usb_int_regs {
126 struct usb_int_header hdr;
127 struct reg_data regs[0];
128 } __attribute__((packed));
130 struct usb_int_retry_fail {
131 struct usb_int_header hdr;
136 } __attribute__((packed));
138 struct read_regs_int {
139 struct completion completion;
140 /* Stores the USB int structure and contains the USB address of the
141 * first requested register before request.
143 u8 buffer[USB_MAX_EP_INT_BUFFER];
158 struct zd_usb_interrupt {
159 struct read_regs_int read_regs;
163 u8 read_regs_enabled:1;
166 static inline struct usb_int_regs *get_read_regs(struct zd_usb_interrupt *intr)
168 return (struct usb_int_regs *)intr->read_regs.buffer;
171 #define RX_URBS_COUNT 5
175 u8 fragment[2*USB_MAX_RX_SIZE];
176 unsigned int fragment_length;
177 unsigned int usb_packet_size;
183 * struct zd_usb_tx - structure used for transmitting frames
184 * @lock: lock for transmission
185 * @free_urb_list: list of free URBs, contains all the URBs, which can be used
186 * @submitted_urbs: atomic integer that counts the URBs having sent to the
187 * device, which haven't been completed
188 * @enabled: enabled flag, indicates whether tx is enabled
189 * @stopped: indicates whether higher level tx queues are stopped
193 struct list_head free_urb_list;
199 /* Contains the usb parts. The structure doesn't require a lock because intf
200 * will not be changed after initialization.
203 struct zd_usb_interrupt intr;
206 struct usb_interface *intf;
207 u8 is_zd1211b:1, initialized:1;
210 #define zd_usb_dev(usb) (&usb->intf->dev)
212 static inline struct usb_device *zd_usb_to_usbdev(struct zd_usb *usb)
214 return interface_to_usbdev(usb->intf);
217 static inline struct ieee80211_hw *zd_intf_to_hw(struct usb_interface *intf)
219 return usb_get_intfdata(intf);
222 static inline struct ieee80211_hw *zd_usb_to_hw(struct zd_usb *usb)
224 return zd_intf_to_hw(usb->intf);
227 void zd_usb_init(struct zd_usb *usb, struct ieee80211_hw *hw,
228 struct usb_interface *intf);
229 int zd_usb_init_hw(struct zd_usb *usb);
230 void zd_usb_clear(struct zd_usb *usb);
232 int zd_usb_scnprint_id(struct zd_usb *usb, char *buffer, size_t size);
234 int zd_usb_enable_int(struct zd_usb *usb);
235 void zd_usb_disable_int(struct zd_usb *usb);
237 int zd_usb_enable_rx(struct zd_usb *usb);
238 void zd_usb_disable_rx(struct zd_usb *usb);
240 void zd_usb_enable_tx(struct zd_usb *usb);
241 void zd_usb_disable_tx(struct zd_usb *usb);
243 int zd_usb_tx(struct zd_usb *usb, struct sk_buff *skb);
245 int zd_usb_ioread16v(struct zd_usb *usb, u16 *values,
246 const zd_addr_t *addresses, unsigned int count);
248 static inline int zd_usb_ioread16(struct zd_usb *usb, u16 *value,
249 const zd_addr_t addr)
251 return zd_usb_ioread16v(usb, value, (const zd_addr_t *)&addr, 1);
254 int zd_usb_iowrite16v(struct zd_usb *usb, const struct zd_ioreq16 *ioreqs,
257 int zd_usb_rfwrite(struct zd_usb *usb, u32 value, u8 bits);
259 int zd_usb_read_fw(struct zd_usb *usb, zd_addr_t addr, u8 *data, u16 len);
261 extern struct workqueue_struct *zd_workqueue;
263 #endif /* _ZD_USB_H */