linux/drivers/net/wireless/zd1211rw/zd_ieee80211.h
Daniel Drake 0ce34bc8f7 [PATCH] zd1211rw: Remove addressing abstraction
Instead of passing our own custom 32-bit addresses around and
translating them, this patch makes all our register address constants
absolute and removes the translation.

There are two ugly parts:
 - fw_reg_addr() is needed to compute addresses of firmware registers, as this
   is dynamic based upon firmware
 - inc_addr() needs a small hack to handle byte vs word addressing

However, both of those are only small, and we don't use fw_regs a whole
lot anyway.

The bonuses here include simplicity and improved driver readability. Also, the
fact that registers are now referenced by 16-bit absolute addresses (as
opposed to 32-bit pseudo addresses) means that over 2kb compiled code size has
been shaved off.

Includes some touchups and sparse fixes from Ulrich Kunitz.

Signed-off-by: Daniel Drake <dsd@gentoo.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2007-02-05 16:58:42 -05:00

86 lines
1.8 KiB
C

#ifndef _ZD_IEEE80211_H
#define _ZD_IEEE80211_H
#include <net/ieee80211.h>
/* Additional definitions from the standards.
*/
#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,
};
struct channel_range {
u8 start;
u8 end; /* exclusive (channel must be less than end) */
};
struct iw_freq;
int zd_geo_init(struct ieee80211_device *ieee, u8 regdomain);
const struct channel_range *zd_channel_range(u8 regdomain);
int zd_regdomain_supports_channel(u8 regdomain, u8 channel);
int zd_regdomain_supported(u8 regdomain);
/* for 2.4 GHz band */
int zd_channel_to_freq(struct iw_freq *freq, u8 channel);
int zd_find_channel(u8 *channel, const struct iw_freq *freq);
#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 header->prefix[0] & 0xf;
}
/* These are referred to as zd_rates */
#define ZD_OFDM_RATE_6M 0xb
#define ZD_OFDM_RATE_9M 0xf
#define ZD_OFDM_RATE_12M 0xa
#define ZD_OFDM_RATE_18M 0xe
#define ZD_OFDM_RATE_24M 0x9
#define ZD_OFDM_RATE_36M 0xd
#define ZD_OFDM_RATE_48M 0x8
#define ZD_OFDM_RATE_54M 0xc
struct cck_plcp_header {
u8 signal;
u8 service;
__le16 length;
__le16 crc16;
} __attribute__((packed));
static inline u8 zd_cck_plcp_header_rate(const struct cck_plcp_header *header)
{
return header->signal;
}
#define ZD_CCK_SIGNAL_1M 0x0a
#define ZD_CCK_SIGNAL_2M 0x14
#define ZD_CCK_SIGNAL_5M5 0x37
#define ZD_CCK_SIGNAL_11M 0x6e
enum ieee80211_std {
IEEE80211B = 0x01,
IEEE80211A = 0x02,
IEEE80211G = 0x04,
};
#endif /* _ZD_IEEE80211_H */