drivers/net/wireless/zydas/zd1211rw/zd

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This source file includes following definitions.
get_read_regs
zd_usb_to_usbdev
zd_intf_to_hw
zd_usb_to_hw
zd_usb_ioread16
   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /* ZD1211 USB-WLAN driver for Linux
   3  *
   4  * Copyright (C) 2005-2007 Ulrich Kunitz <kune@deine-taler.de>
   5  * Copyright (C) 2006-2007 Daniel Drake <dsd@gentoo.org>
   6  */
   7 
   8 #ifndef _ZD_USB_H
   9 #define _ZD_USB_H
  10 
  11 #include <linux/completion.h>
  12 #include <linux/netdevice.h>
  13 #include <linux/spinlock.h>
  14 #include <linux/skbuff.h>
  15 #include <linux/usb.h>
  16 
  17 #include "zd_def.h"
  18 
  19 #define ZD_USB_TX_HIGH  5
  20 #define ZD_USB_TX_LOW   2
  21 
  22 #define ZD_TX_TIMEOUT           (HZ * 5)
  23 #define ZD_TX_WATCHDOG_INTERVAL round_jiffies_relative(HZ)
  24 #define ZD_RX_IDLE_INTERVAL     round_jiffies_relative(30 * HZ)
  25 
  26 enum devicetype {
  27         DEVICE_ZD1211  = 0,
  28         DEVICE_ZD1211B = 1,
  29         DEVICE_INSTALLER = 2,
  30 };
  31 
  32 enum endpoints {
  33         EP_CTRL     = 0,
  34         EP_DATA_OUT = 1,
  35         EP_DATA_IN  = 2,
  36         EP_INT_IN   = 3,
  37         EP_REGS_OUT = 4,
  38 };
  39 
  40 enum {
  41         USB_MAX_TRANSFER_SIZE           = 4096, /* bytes */
  42         /* FIXME: The original driver uses this value. We have to check,
  43          * whether the MAX_TRANSFER_SIZE is sufficient and this needs only be
  44          * used if one combined frame is split over two USB transactions.
  45          */
  46         USB_MAX_RX_SIZE                 = 4800, /* bytes */
  47         USB_MAX_IOWRITE16_COUNT         = 15,
  48         USB_MAX_IOWRITE32_COUNT         = USB_MAX_IOWRITE16_COUNT/2,
  49         USB_MAX_IOREAD16_COUNT          = 15,
  50         USB_MAX_IOREAD32_COUNT          = USB_MAX_IOREAD16_COUNT/2,
  51         USB_MIN_RFWRITE_BIT_COUNT       = 16,
  52         USB_MAX_RFWRITE_BIT_COUNT       = 28,
  53         USB_MAX_EP_INT_BUFFER           = 64,
  54         USB_ZD1211B_BCD_DEVICE          = 0x4810,
  55 };
  56 
  57 enum control_requests {
  58         USB_REQ_WRITE_REGS              = 0x21,
  59         USB_REQ_READ_REGS               = 0x22,
  60         USB_REQ_WRITE_RF                = 0x23,
  61         USB_REQ_PROG_FLASH              = 0x24,
  62         USB_REQ_EEPROM_START            = 0x0128, /* ? request is a byte */
  63         USB_REQ_EEPROM_MID              = 0x28,
  64         USB_REQ_EEPROM_END              = 0x0228, /* ? request is a byte */
  65         USB_REQ_FIRMWARE_DOWNLOAD       = 0x30,
  66         USB_REQ_FIRMWARE_CONFIRM        = 0x31,
  67         USB_REQ_FIRMWARE_READ_DATA      = 0x32,
  68 };
  69 
  70 struct usb_req_read_regs {
  71         __le16 id;
  72         __le16 addr[0];
  73 } __packed;
  74 
  75 struct reg_data {
  76         __le16 addr;
  77         __le16 value;
  78 } __packed;
  79 
  80 struct usb_req_write_regs {
  81         __le16 id;
  82         struct reg_data reg_writes[0];
  83 } __packed;
  84 
  85 enum {
  86         RF_IF_LE = 0x02,
  87         RF_CLK   = 0x04,
  88         RF_DATA  = 0x08,
  89 };
  90 
  91 struct usb_req_rfwrite {
  92         __le16 id;
  93         __le16 value;
  94         /* 1: 3683a */
  95         /* 2: other (default) */
  96         __le16 bits;
  97         /* RF2595: 24 */
  98         __le16 bit_values[0];
  99         /* (ZD_CR203 & ~(RF_IF_LE | RF_CLK | RF_DATA)) | (bit ? RF_DATA : 0) */
 100 } __packed;
 101 
 102 /* USB interrupt */
 103 
 104 enum usb_int_id {
 105         USB_INT_TYPE                    = 0x01,
 106         USB_INT_ID_REGS                 = 0x90,
 107         USB_INT_ID_RETRY_FAILED         = 0xa0,
 108 };
 109 
 110 enum usb_int_flags {
 111         USB_INT_READ_REGS_EN            = 0x01,
 112 };
 113 
 114 struct usb_int_header {
 115         u8 type;        /* must always be 1 */
 116         u8 id;
 117 } __packed;
 118 
 119 struct usb_int_regs {
 120         struct usb_int_header hdr;
 121         struct reg_data regs[0];
 122 } __packed;
 123 
 124 struct usb_int_retry_fail {
 125         struct usb_int_header hdr;
 126         u8 new_rate;
 127         u8 _dummy;
 128         u8 addr[ETH_ALEN];
 129         u8 ibss_wakeup_dest;
 130 } __packed;
 131 
 132 struct read_regs_int {
 133         struct completion completion;
 134         struct usb_req_read_regs *req;
 135         unsigned int req_count;
 136         /* Stores the USB int structure and contains the USB address of the
 137          * first requested register before request.
 138          */
 139         u8 buffer[USB_MAX_EP_INT_BUFFER];
 140         int length;
 141         __le16 cr_int_addr;
 142 };
 143 
 144 struct zd_ioreq16 {
 145         zd_addr_t addr;
 146         u16 value;
 147 };
 148 
 149 struct zd_ioreq32 {
 150         zd_addr_t addr;
 151         u32 value;
 152 };
 153 
 154 struct zd_usb_interrupt {
 155         struct read_regs_int read_regs;
 156         spinlock_t lock;
 157         struct urb *urb;
 158         void *buffer;
 159         dma_addr_t buffer_dma;
 160         int interval;
 161         atomic_t read_regs_enabled;
 162         u8 read_regs_int_overridden:1;
 163 };
 164 
 165 static inline struct usb_int_regs *get_read_regs(struct zd_usb_interrupt *intr)
 166 {
 167         return (struct usb_int_regs *)intr->read_regs.buffer;
 168 }
 169 
 170 #define RX_URBS_COUNT 5
 171 
 172 struct zd_usb_rx {
 173         spinlock_t lock;
 174         struct mutex setup_mutex;
 175         struct delayed_work idle_work;
 176         struct tasklet_struct reset_timer_tasklet;
 177         u8 fragment[2 * USB_MAX_RX_SIZE];
 178         unsigned int fragment_length;
 179         unsigned int usb_packet_size;
 180         struct urb **urbs;
 181         int urbs_count;
 182 };
 183 
 184 /**
 185  * struct zd_usb_tx - structure used for transmitting frames
 186  * @enabled: atomic enabled flag, indicates whether tx is enabled
 187  * @lock: lock for transmission
 188  * @submitted: anchor for URBs sent to device
 189  * @submitted_urbs: atomic integer that counts the URBs having sent to the
 190  *      device, which haven't been completed
 191  * @stopped: indicates whether higher level tx queues are stopped
 192  */
 193 struct zd_usb_tx {
 194         atomic_t enabled;
 195         spinlock_t lock;
 196         struct delayed_work watchdog_work;
 197         struct sk_buff_head submitted_skbs;
 198         struct usb_anchor submitted;
 199         int submitted_urbs;
 200         u8 stopped:1, watchdog_enabled:1;
 201 };
 202 
 203 /* Contains the usb parts. The structure doesn't require a lock because intf
 204  * will not be changed after initialization.
 205  */
 206 struct zd_usb {
 207         struct zd_usb_interrupt intr;
 208         struct zd_usb_rx rx;
 209         struct zd_usb_tx tx;
 210         struct usb_interface *intf;
 211         struct usb_anchor submitted_cmds;
 212         struct urb *urb_async_waiting;
 213         int cmd_error;
 214         u8 req_buf[64]; /* zd_usb_iowrite16v needs 62 bytes */
 215         u8 is_zd1211b:1, initialized:1, was_running:1, in_async:1;
 216 };
 217 
 218 #define zd_usb_dev(usb) (&usb->intf->dev)
 219 
 220 static inline struct usb_device *zd_usb_to_usbdev(struct zd_usb *usb)
 221 {
 222         return interface_to_usbdev(usb->intf);
 223 }
 224 
 225 static inline struct ieee80211_hw *zd_intf_to_hw(struct usb_interface *intf)
 226 {
 227         return usb_get_intfdata(intf);
 228 }
 229 
 230 static inline struct ieee80211_hw *zd_usb_to_hw(struct zd_usb *usb)
 231 {
 232         return zd_intf_to_hw(usb->intf);
 233 }
 234 
 235 void zd_usb_init(struct zd_usb *usb, struct ieee80211_hw *hw,
 236                  struct usb_interface *intf);
 237 int zd_usb_init_hw(struct zd_usb *usb);
 238 void zd_usb_clear(struct zd_usb *usb);
 239 
 240 int zd_usb_scnprint_id(struct zd_usb *usb, char *buffer, size_t size);
 241 
 242 void zd_tx_watchdog_enable(struct zd_usb *usb);
 243 void zd_tx_watchdog_disable(struct zd_usb *usb);
 244 
 245 int zd_usb_enable_int(struct zd_usb *usb);
 246 void zd_usb_disable_int(struct zd_usb *usb);
 247 
 248 int zd_usb_enable_rx(struct zd_usb *usb);
 249 void zd_usb_disable_rx(struct zd_usb *usb);
 250 
 251 void zd_usb_reset_rx_idle_timer(struct zd_usb *usb);
 252 
 253 void zd_usb_enable_tx(struct zd_usb *usb);
 254 void zd_usb_disable_tx(struct zd_usb *usb);
 255 
 256 int zd_usb_tx(struct zd_usb *usb, struct sk_buff *skb);
 257 
 258 int zd_usb_ioread16v(struct zd_usb *usb, u16 *values,
 259                  const zd_addr_t *addresses, unsigned int count);
 260 
 261 static inline int zd_usb_ioread16(struct zd_usb *usb, u16 *value,
 262                               const zd_addr_t addr)
 263 {
 264         return zd_usb_ioread16v(usb, value, &addr, 1);
 265 }
 266 
 267 void zd_usb_iowrite16v_async_start(struct zd_usb *usb);
 268 int zd_usb_iowrite16v_async_end(struct zd_usb *usb, unsigned int timeout);
 269 int zd_usb_iowrite16v_async(struct zd_usb *usb, const struct zd_ioreq16 *ioreqs,
 270                             unsigned int count);
 271 int zd_usb_iowrite16v(struct zd_usb *usb, const struct zd_ioreq16 *ioreqs,
 272                       unsigned int count);
 273 
 274 int zd_usb_rfwrite(struct zd_usb *usb, u32 value, u8 bits);
 275 
 276 int zd_usb_read_fw(struct zd_usb *usb, zd_addr_t addr, u8 *data, u16 len);
 277 
 278 extern struct workqueue_struct *zd_workqueue;
 279 
 280 #endif /* _ZD_USB_H */
/* [<][>][^][v][top][bottom][index][help] */
root/drivers/net/wireless/zydas/zd1211rw/zd_usb.h

INCLUDED FROM

DEFINITIONS
