-/* zd_mac.h
+/* ZD1211 USB-WLAN driver for Linux
+ *
+ * Copyright (C) 2005-2007 Ulrich Kunitz <kune@deine-taler.de>
+ * Copyright (C) 2006-2007 Daniel Drake <dsd@gentoo.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
#ifndef _ZD_MAC_H
#define _ZD_MAC_H
-#include <linux/wireless.h>
#include <linux/kernel.h>
-#include <net/ieee80211.h>
-#include <net/ieee80211softmac.h>
+#include <net/mac80211.h>
#include "zd_chip.h"
-#include "zd_netdev.h"
struct zd_ctrlset {
u8 modulation;
#define ZD_CS_RESERVED_SIZE 25
-/* zd_crtlset field modulation */
-#define ZD_CS_RATE_MASK 0x0f
-#define ZD_CS_TYPE_MASK 0x10
-#define ZD_CS_RATE(modulation) ((modulation) & ZD_CS_RATE_MASK)
-#define ZD_CS_TYPE(modulation) ((modulation) & ZD_CS_TYPE_MASK)
-
-#define ZD_CS_CCK 0x00
-#define ZD_CS_OFDM 0x10
-
-#define ZD_CS_CCK_RATE_1M 0x00
-#define ZD_CS_CCK_RATE_2M 0x01
-#define ZD_CS_CCK_RATE_5_5M 0x02
-#define ZD_CS_CCK_RATE_11M 0x03
-/* The rates for OFDM are encoded as in the PLCP header. Use ZD_OFDM_RATE_*.
+/* The field modulation of struct zd_ctrlset controls the bit rate, the use
+ * of short or long preambles in 802.11b (CCK mode) or the use of 802.11a or
+ * 802.11g in OFDM mode.
+ *
+ * The term zd-rate is used for the combination of the modulation type flag
+ * and the "pure" rate value.
+ */
+#define ZD_PURE_RATE_MASK 0x0f
+#define ZD_MODULATION_TYPE_MASK 0x10
+#define ZD_RATE_MASK (ZD_PURE_RATE_MASK|ZD_MODULATION_TYPE_MASK)
+#define ZD_PURE_RATE(modulation) ((modulation) & ZD_PURE_RATE_MASK)
+#define ZD_MODULATION_TYPE(modulation) ((modulation) & ZD_MODULATION_TYPE_MASK)
+#define ZD_RATE(modulation) ((modulation) & ZD_RATE_MASK)
+
+/* The two possible modulation types. Notify that 802.11b doesn't use the CCK
+ * codeing for the 1 and 2 MBit/s rate. We stay with the term here to remain
+ * consistent with uses the term at other places.
*/
+#define ZD_CCK 0x00
+#define ZD_OFDM 0x10
-/* bit 5 is preamble (when in CCK mode), or a/g selection (when in OFDM mode) */
-#define ZD_CS_CCK_PREA_LONG 0x00
-#define ZD_CS_CCK_PREA_SHORT 0x20
-#define ZD_CS_OFDM_MODE_11G 0x00
-#define ZD_CS_OFDM_MODE_11A 0x20
+/* The ZD1211 firmware uses proprietary encodings of the 802.11b (CCK) rates.
+ * For OFDM the PLCP rate encodings are used. We combine these "pure" rates
+ * with the modulation type flag and call the resulting values zd-rates.
+ */
+#define ZD_CCK_RATE_1M (ZD_CCK|0x00)
+#define ZD_CCK_RATE_2M (ZD_CCK|0x01)
+#define ZD_CCK_RATE_5_5M (ZD_CCK|0x02)
+#define ZD_CCK_RATE_11M (ZD_CCK|0x03)
+#define ZD_OFDM_RATE_6M (ZD_OFDM|ZD_OFDM_PLCP_RATE_6M)
+#define ZD_OFDM_RATE_9M (ZD_OFDM|ZD_OFDM_PLCP_RATE_9M)
+#define ZD_OFDM_RATE_12M (ZD_OFDM|ZD_OFDM_PLCP_RATE_12M)
+#define ZD_OFDM_RATE_18M (ZD_OFDM|ZD_OFDM_PLCP_RATE_18M)
+#define ZD_OFDM_RATE_24M (ZD_OFDM|ZD_OFDM_PLCP_RATE_24M)
+#define ZD_OFDM_RATE_36M (ZD_OFDM|ZD_OFDM_PLCP_RATE_36M)
+#define ZD_OFDM_RATE_48M (ZD_OFDM|ZD_OFDM_PLCP_RATE_48M)
+#define ZD_OFDM_RATE_54M (ZD_OFDM|ZD_OFDM_PLCP_RATE_54M)
+
+/* The bit 5 of the zd_ctrlset modulation field controls the preamble in CCK
+ * mode or the 802.11a/802.11g selection in OFDM mode.
+ */
+#define ZD_CCK_PREA_LONG 0x00
+#define ZD_CCK_PREA_SHORT 0x20
+#define ZD_OFDM_MODE_11G 0x00
+#define ZD_OFDM_MODE_11A 0x20
/* zd_ctrlset control field */
#define ZD_CS_NEED_RANDOM_BACKOFF 0x01
-#define ZD_CS_MULTICAST 0x02
+#define ZD_CS_NO_ACK 0x02
#define ZD_CS_FRAME_TYPE_MASK 0x0c
#define ZD_CS_DATA_FRAME 0x00
struct rx_length_info {
__le16 length[3];
__le16 tag;
-};
+} __attribute__((packed));
#define RX_LENGTH_INFO_TAG 0x697e
u8 signal_quality_ofdm;
u8 decryption_type;
u8 frame_status;
-};
+} __attribute__((packed));
/* rx_status field decryption_type */
#define ZD_RX_NO_WEP 0
MAC_FIXED_CHANNEL = 0x01,
};
+struct housekeeping {
+ struct delayed_work link_led_work;
+};
+
#define ZD_MAC_STATS_BUFFER_SIZE 16
+#define ZD_MAC_MAX_ACK_WAITERS 10
+
struct zd_mac {
struct zd_chip chip;
spinlock_t lock;
- struct net_device *netdev;
- /* Unlocked reading possible */
- struct iw_statistics iw_stats;
- unsigned int stats_count;
- u8 qual_buffer[ZD_MAC_STATS_BUFFER_SIZE];
- u8 rssi_buffer[ZD_MAC_STATS_BUFFER_SIZE];
+ spinlock_t intr_lock;
+ struct ieee80211_hw *hw;
+ struct housekeeping housekeeping;
+ struct work_struct set_multicast_hash_work;
+ struct work_struct set_rts_cts_work;
+ struct work_struct set_rx_filter_work;
+ struct work_struct process_intr;
+ struct zd_mc_hash multicast_hash;
+ u8 intr_buffer[USB_MAX_EP_INT_BUFFER];
u8 regdomain;
u8 default_regdomain;
- u8 requested_channel;
+ int type;
+ int associated;
+ struct sk_buff_head ack_wait_queue;
+ struct ieee80211_channel channels[14];
+ struct ieee80211_rate rates[12];
+ struct ieee80211_supported_band band;
+
+ /* Short preamble (used for RTS/CTS) */
+ unsigned int short_preamble:1;
+
+ /* flags to indicate update in progress */
+ unsigned int updating_rts_rate:1;
+
+ /* whether to pass frames with CRC errors to stack */
+ unsigned int pass_failed_fcs:1;
+
+ /* whether to pass control frames to stack */
+ unsigned int pass_ctrl:1;
};
-static inline struct ieee80211_device *zd_mac_to_ieee80211(struct zd_mac *mac)
+#define ZD_REGDOMAIN_FCC 0x10
+#define ZD_REGDOMAIN_IC 0x20
+#define ZD_REGDOMAIN_ETSI 0x30
+#define ZD_REGDOMAIN_SPAIN 0x31
+#define ZD_REGDOMAIN_FRANCE 0x32
+#define ZD_REGDOMAIN_JAPAN_ADD 0x40
+#define ZD_REGDOMAIN_JAPAN 0x41
+
+enum {
+ MIN_CHANNEL24 = 1,
+ MAX_CHANNEL24 = 14,
+};
+
+#define ZD_PLCP_SERVICE_LENGTH_EXTENSION 0x80
+
+struct ofdm_plcp_header {
+ u8 prefix[3];
+ __le16 service;
+} __attribute__((packed));
+
+static inline u8 zd_ofdm_plcp_header_rate(const struct ofdm_plcp_header *header)
{
- return zd_netdev_ieee80211(mac->netdev);
+ return header->prefix[0] & 0xf;
}
-static inline struct zd_mac *zd_netdev_mac(struct net_device *netdev)
+/* The following defines give the encoding of the 4-bit rate field in the
+ * OFDM (802.11a/802.11g) PLCP header. Notify that these values are used to
+ * define the zd-rate values for OFDM.
+ *
+ * See the struct zd_ctrlset definition in zd_mac.h.
+ */
+#define ZD_OFDM_PLCP_RATE_6M 0xb
+#define ZD_OFDM_PLCP_RATE_9M 0xf
+#define ZD_OFDM_PLCP_RATE_12M 0xa
+#define ZD_OFDM_PLCP_RATE_18M 0xe
+#define ZD_OFDM_PLCP_RATE_24M 0x9
+#define ZD_OFDM_PLCP_RATE_36M 0xd
+#define ZD_OFDM_PLCP_RATE_48M 0x8
+#define ZD_OFDM_PLCP_RATE_54M 0xc
+
+struct cck_plcp_header {
+ u8 signal;
+ u8 service;
+ __le16 length;
+ __le16 crc16;
+} __attribute__((packed));
+
+static inline u8 zd_cck_plcp_header_signal(const struct cck_plcp_header *header)
{
- return ieee80211softmac_priv(netdev);
+ return header->signal;
+}
+
+/* These defines give the encodings of the signal field in the 802.11b PLCP
+ * header. The signal field gives the bit rate of the following packet. Even
+ * if technically wrong we use CCK here also for the 1 MBit/s and 2 MBit/s
+ * rate to stay consistent with Zydas and our use of the term.
+ *
+ * Notify that these values are *not* used in the zd-rates.
+ */
+#define ZD_CCK_PLCP_SIGNAL_1M 0x0a
+#define ZD_CCK_PLCP_SIGNAL_2M 0x14
+#define ZD_CCK_PLCP_SIGNAL_5M5 0x37
+#define ZD_CCK_PLCP_SIGNAL_11M 0x6e
+
+static inline struct zd_mac *zd_hw_mac(struct ieee80211_hw *hw)
+{
+ return hw->priv;
}
static inline struct zd_mac *zd_chip_to_mac(struct zd_chip *chip)
return zd_chip_to_mac(zd_usb_to_chip(usb));
}
+static inline u8 *zd_mac_get_perm_addr(struct zd_mac *mac)
+{
+ return mac->hw->wiphy->perm_addr;
+}
+
#define zd_mac_dev(mac) (zd_chip_dev(&(mac)->chip))
-int zd_mac_init(struct zd_mac *mac,
- struct net_device *netdev,
- struct usb_interface *intf);
+struct ieee80211_hw *zd_mac_alloc_hw(struct usb_interface *intf);
void zd_mac_clear(struct zd_mac *mac);
-int zd_mac_init_hw(struct zd_mac *mac, u8 device_type);
-
-int zd_mac_open(struct net_device *netdev);
-int zd_mac_stop(struct net_device *netdev);
-int zd_mac_set_mac_address(struct net_device *dev, void *p);
-
-int zd_mac_rx(struct zd_mac *mac, const u8 *buffer, unsigned int length);
-
-int zd_mac_set_regdomain(struct zd_mac *zd_mac, u8 regdomain);
-u8 zd_mac_get_regdomain(struct zd_mac *zd_mac);
-
-int zd_mac_request_channel(struct zd_mac *mac, u8 channel);
-int zd_mac_get_channel(struct zd_mac *mac, u8 *channel, u8 *flags);
-
-int zd_mac_set_mode(struct zd_mac *mac, u32 mode);
-int zd_mac_get_mode(struct zd_mac *mac, u32 *mode);
-
-int zd_mac_get_range(struct zd_mac *mac, struct iw_range *range);
+int zd_mac_preinit_hw(struct ieee80211_hw *hw);
+int zd_mac_init_hw(struct ieee80211_hw *hw);
-struct iw_statistics *zd_mac_get_wireless_stats(struct net_device *ndev);
+int zd_mac_rx(struct ieee80211_hw *hw, const u8 *buffer, unsigned int length);
+void zd_mac_tx_failed(struct ieee80211_hw *hw);
+void zd_mac_tx_to_dev(struct sk_buff *skb, int error);
#ifdef DEBUG
void zd_dump_rx_status(const struct rx_status *status);
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