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rtlwifi: Install updated rate-mapping routine
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In preparation for fixing the rate-mapping situation, place a driver-agnostic
version in rtlwifi. This one contains the updated rate incormation.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Chaoming Li <chaoming_li@realsil.com.cn>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Larry Finger authored and John W. Linville committed Aug 24, 2011
1 parent f750323 commit 7ad0ce3
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Showing 3 changed files with 198 additions and 0 deletions.
161 changes: 161 additions & 0 deletions drivers/net/wireless/rtlwifi/base.c
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Original file line number Diff line number Diff line change
Expand Up @@ -664,6 +664,167 @@ static u8 _rtl_get_highest_n_rate(struct ieee80211_hw *hw)
return hw_rate;
}

/* mac80211's rate_idx is like this:
*
* 2.4G band:rx_status->band == IEEE80211_BAND_2GHZ
*
* B/G rate:
* (rx_status->flag & RX_FLAG_HT) = 0,
* DESC92_RATE1M-->DESC92_RATE54M ==> idx is 0-->11,
*
* N rate:
* (rx_status->flag & RX_FLAG_HT) = 1,
* DESC92_RATEMCS0-->DESC92_RATEMCS15 ==> idx is 0-->15
*
* 5G band:rx_status->band == IEEE80211_BAND_5GHZ
* A rate:
* (rx_status->flag & RX_FLAG_HT) = 0,
* DESC92_RATE6M-->DESC92_RATE54M ==> idx is 0-->7,
*
* N rate:
* (rx_status->flag & RX_FLAG_HT) = 1,
* DESC92_RATEMCS0-->DESC92_RATEMCS15 ==> idx is 0-->15
*/
int rtlwifi_rate_mapping(struct ieee80211_hw *hw,
bool isht, u8 desc_rate, bool first_ampdu)
{
int rate_idx;

if (false == isht) {
if (IEEE80211_BAND_2GHZ == hw->conf.channel->band) {
switch (desc_rate) {
case DESC92_RATE1M:
rate_idx = 0;
break;
case DESC92_RATE2M:
rate_idx = 1;
break;
case DESC92_RATE5_5M:
rate_idx = 2;
break;
case DESC92_RATE11M:
rate_idx = 3;
break;
case DESC92_RATE6M:
rate_idx = 4;
break;
case DESC92_RATE9M:
rate_idx = 5;
break;
case DESC92_RATE12M:
rate_idx = 6;
break;
case DESC92_RATE18M:
rate_idx = 7;
break;
case DESC92_RATE24M:
rate_idx = 8;
break;
case DESC92_RATE36M:
rate_idx = 9;
break;
case DESC92_RATE48M:
rate_idx = 10;
break;
case DESC92_RATE54M:
rate_idx = 11;
break;
default:
rate_idx = 0;
break;
}
} else {
switch (desc_rate) {
case DESC92_RATE6M:
rate_idx = 0;
break;
case DESC92_RATE9M:
rate_idx = 1;
break;
case DESC92_RATE12M:
rate_idx = 2;
break;
case DESC92_RATE18M:
rate_idx = 3;
break;
case DESC92_RATE24M:
rate_idx = 4;
break;
case DESC92_RATE36M:
rate_idx = 5;
break;
case DESC92_RATE48M:
rate_idx = 6;
break;
case DESC92_RATE54M:
rate_idx = 7;
break;
default:
rate_idx = 0;
break;
}
}

} else {

switch (desc_rate) {
case DESC92_RATEMCS0:
rate_idx = 0;
break;
case DESC92_RATEMCS1:
rate_idx = 1;
break;
case DESC92_RATEMCS2:
rate_idx = 2;
break;
case DESC92_RATEMCS3:
rate_idx = 3;
break;
case DESC92_RATEMCS4:
rate_idx = 4;
break;
case DESC92_RATEMCS5:
rate_idx = 5;
break;
case DESC92_RATEMCS6:
rate_idx = 6;
break;
case DESC92_RATEMCS7:
rate_idx = 7;
break;
case DESC92_RATEMCS8:
rate_idx = 8;
break;
case DESC92_RATEMCS9:
rate_idx = 9;
break;
case DESC92_RATEMCS10:
rate_idx = 10;
break;
case DESC92_RATEMCS11:
rate_idx = 11;
break;
case DESC92_RATEMCS12:
rate_idx = 12;
break;
case DESC92_RATEMCS13:
rate_idx = 13;
break;
case DESC92_RATEMCS14:
rate_idx = 14;
break;
case DESC92_RATEMCS15:
rate_idx = 15;
break;
default:
rate_idx = 0;
break;
}
}
return rate_idx;
}
EXPORT_SYMBOL(rtlwifi_rate_mapping);

void rtl_get_tcb_desc(struct ieee80211_hw *hw,
struct ieee80211_tx_info *info,
struct ieee80211_sta *sta,
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2 changes: 2 additions & 0 deletions drivers/net/wireless/rtlwifi/base.h
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Original file line number Diff line number Diff line change
Expand Up @@ -140,4 +140,6 @@ u8 *rtl_find_ie(u8 *data, unsigned int len, u8 ie);
void rtl_recognize_peer(struct ieee80211_hw *hw, u8 *data, unsigned int len);
u8 rtl_tid_to_ac(struct ieee80211_hw *hw, u8 tid);
extern struct attribute_group rtl_attribute_group;
int rtlwifi_rate_mapping(struct ieee80211_hw *hw,
bool isht, u8 desc_rate, bool first_ampdu);
#endif
35 changes: 35 additions & 0 deletions drivers/net/wireless/rtlwifi/wifi.h
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Original file line number Diff line number Diff line change
Expand Up @@ -386,6 +386,41 @@ enum rtl_hal_state {
_HAL_STATE_START = 1,
};

enum rtl_desc92_rate {
DESC92_RATE1M = 0x00,
DESC92_RATE2M = 0x01,
DESC92_RATE5_5M = 0x02,
DESC92_RATE11M = 0x03,

DESC92_RATE6M = 0x04,
DESC92_RATE9M = 0x05,
DESC92_RATE12M = 0x06,
DESC92_RATE18M = 0x07,
DESC92_RATE24M = 0x08,
DESC92_RATE36M = 0x09,
DESC92_RATE48M = 0x0a,
DESC92_RATE54M = 0x0b,

DESC92_RATEMCS0 = 0x0c,
DESC92_RATEMCS1 = 0x0d,
DESC92_RATEMCS2 = 0x0e,
DESC92_RATEMCS3 = 0x0f,
DESC92_RATEMCS4 = 0x10,
DESC92_RATEMCS5 = 0x11,
DESC92_RATEMCS6 = 0x12,
DESC92_RATEMCS7 = 0x13,
DESC92_RATEMCS8 = 0x14,
DESC92_RATEMCS9 = 0x15,
DESC92_RATEMCS10 = 0x16,
DESC92_RATEMCS11 = 0x17,
DESC92_RATEMCS12 = 0x18,
DESC92_RATEMCS13 = 0x19,
DESC92_RATEMCS14 = 0x1a,
DESC92_RATEMCS15 = 0x1b,
DESC92_RATEMCS15_SG = 0x1c,
DESC92_RATEMCS32 = 0x20,
};

enum rtl_var_map {
/*reg map */
SYS_ISO_CTRL = 0,
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