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authorBruno Randolf <br1@einfach.org>2008-07-30 11:12:58 -0400
committerJohn W. Linville <linville@tuxdriver.com>2008-08-22 16:29:50 -0400
commit63266a653589e1a237527479f10212ea77ce7844 (patch)
treee2e9318a310d2cc8bec79168c6a3df1f673f27c7 /drivers/net/wireless/ath5k
parent92ab85354993ac3a364c65cab45745af470ffc67 (diff)
ath5k: rates cleanup
cleanup the rates structures used by ath5k. instead of separate driver and mac80211 rate structures we now setup a static ieee80211_rate array and use it directly. no conversion between two different rate structures has to be done any more. a lot of unused and confusing junk was deleted. renamed ath5k_getchannels into ath5k_setup_bands because this is what it does. rewrote it to copy the bitrates correctly for each band. this is necessary for running different hardware with the same driver (e.g. 5211 and 5212 based cards). add special handling of rates for AR5211 chipsets: it uses different rate codes for CCK rates (which are actually like the other chips but with a 0xF mask). setup a hardware code to rate index reverse mapping table for getting the rate index of received frames. the rates for control frames which have to be set in ath5k_hw_write_rate_duration are now in one single array. drivers/net/wireless/ath5k/ath5k.h: Changes-licensed-under: ISC drivers/net/wireless/ath5k/base.c: Changes-licensed-under: 3-Clause-BSD drivers/net/wireless/ath5k/base.h: Changes-licensed-under: 3-Clause-BSD drivers/net/wireless/ath5k/hw.c: Changes-licensed-under: ISC Signed-off-by: Bruno Randolf <br1@einfach.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/ath5k')
-rw-r--r--drivers/net/wireless/ath5k/ath5k.h162
-rw-r--r--drivers/net/wireless/ath5k/base.c254
-rw-r--r--drivers/net/wireless/ath5k/base.h8
-rw-r--r--drivers/net/wireless/ath5k/hw.c76
4 files changed, 171 insertions, 329 deletions
diff --git a/drivers/net/wireless/ath5k/ath5k.h b/drivers/net/wireless/ath5k/ath5k.h
index 9102eea3c8bf..c1b497873668 100644
--- a/drivers/net/wireless/ath5k/ath5k.h
+++ b/drivers/net/wireless/ath5k/ath5k.h
@@ -271,11 +271,6 @@ enum ath5k_driver_mode {
271/* adding this flag to rate_code enables short preamble, see ar5212_reg.h */ 271/* adding this flag to rate_code enables short preamble, see ar5212_reg.h */
272#define AR5K_SET_SHORT_PREAMBLE 0x04 272#define AR5K_SET_SHORT_PREAMBLE 0x04
273 273
274#define HAS_SHPREAMBLE(_ix) \
275 (rt->rates[_ix].modulation == IEEE80211_RATE_SHORT_PREAMBLE)
276#define SHPREAMBLE_FLAG(_ix) \
277 (HAS_SHPREAMBLE(_ix) ? AR5K_SET_SHORT_PREAMBLE : 0)
278
279 274
280/****************\ 275/****************\
281 TX DEFINITIONS 276 TX DEFINITIONS
@@ -568,152 +563,61 @@ struct ath5k_athchan_2ghz {
568 u16 a2_athchan; 563 u16 a2_athchan;
569}; 564};
570 565
566
571/* 567/*
572 * Rate definitions 568 * Rate definitions
573 * TODO: Clean them up or move them on mac80211 -most of these infos are
574 * used by the rate control algorytm on MadWiFi.
575 */ 569 */
576 570
577/* Max number of rates on the rate table and what it seems
578 * Atheros hardware supports */
579#define AR5K_MAX_RATES 32
580
581/** 571/**
582 * struct ath5k_rate - rate structure 572 * Seems the ar5xxx harware supports up to 32 rates, indexed by 1-32.
583 * @valid: is this a valid rate for rate control (remove)
584 * @modulation: respective mac80211 modulation
585 * @rate_kbps: rate in kbit/s
586 * @rate_code: hardware rate value, used in &struct ath5k_desc, on RX on
587 * &struct ath5k_rx_status.rs_rate and on TX on
588 * &struct ath5k_tx_status.ts_rate. Seems the ar5xxx harware supports
589 * up to 32 rates, indexed by 1-32. This means we really only need
590 * 6 bits for the rate_code.
591 * @dot11_rate: respective IEEE-802.11 rate value
592 * @control_rate: index of rate assumed to be used to send control frames.
593 * This can be used to set override the value on the rate duration
594 * registers. This is only useful if we can override in the harware at
595 * what rate we want to send control frames at. Note that IEEE-802.11
596 * Ch. 9.6 (after IEEE 802.11g changes) defines the rate at which we
597 * should send ACK/CTS, if we change this value we can be breaking
598 * the spec.
599 * 573 *
600 * This structure is used to get the RX rate or set the TX rate on the 574 * The rate code is used to get the RX rate or set the TX rate on the
601 * hardware descriptors. It is also used for internal modulation control 575 * hardware descriptors. It is also used for internal modulation control
602 * and settings. 576 * and settings.
603 * 577 *
604 * On RX after the &struct ath5k_desc is parsed by the appropriate 578 * This is the hardware rate map we are aware of:
605 * ah_proc_rx_desc() the respective hardware rate value is set in
606 * &struct ath5k_rx_status.rs_rate. On TX the desired rate is set in
607 * &struct ath5k_tx_status.ts_rate which is later used to setup the
608 * &struct ath5k_desc correctly. This is the hardware rate map we are
609 * aware of:
610 * 579 *
611 * rate_code 1 2 3 4 5 6 7 8 580 * rate_code 0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x08
612 * rate_kbps 3000 1000 ? ? ? 2000 500 48000 581 * rate_kbps 3000 1000 ? ? ? 2000 500 48000
613 * 582 *
614 * rate_code 9 10 11 12 13 14 15 16 583 * rate_code 0x09 0x0A 0x0B 0x0C 0x0D 0x0E 0x0F 0x10
615 * rate_kbps 24000 12000 6000 54000 36000 18000 9000 ? 584 * rate_kbps 24000 12000 6000 54000 36000 18000 9000 ?
616 * 585 *
617 * rate_code 17 18 19 20 21 22 23 24 586 * rate_code 17 18 19 20 21 22 23 24
618 * rate_kbps ? ? ? ? ? ? ? 11000 587 * rate_kbps ? ? ? ? ? ? ? 11000
619 * 588 *
620 * rate_code 25 26 27 28 29 30 31 32 589 * rate_code 25 26 27 28 29 30 31 32
621 * rate_kbps 5500 2000 1000 ? ? ? ? ? 590 * rate_kbps 5500 2000 1000 11000S 5500S 2000S ? ?
622 * 591 *
592 * "S" indicates CCK rates with short preamble.
593 *
594 * AR5211 has different rate codes for CCK (802.11B) rates. It only uses the
595 * lowest 4 bits, so they are the same as below with a 0xF mask.
596 * (0xB, 0xA, 0x9 and 0x8 for 1M, 2M, 5.5M and 11M).
597 * We handle this in ath5k_setup_bands().
623 */ 598 */
624struct ath5k_rate { 599#define AR5K_MAX_RATES 32
625 u8 valid;
626 u32 modulation;
627 u16 rate_kbps;
628 u8 rate_code;
629 u8 dot11_rate;
630 u8 control_rate;
631};
632
633/* XXX: GRR all this stuff to get leds blinking ??? (check out setcurmode) */
634struct ath5k_rate_table {
635 u16 rate_count;
636 u8 rate_code_to_index[AR5K_MAX_RATES]; /* Back-mapping */
637 struct ath5k_rate rates[AR5K_MAX_RATES];
638};
639
640/*
641 * Rate tables...
642 * TODO: CLEAN THIS !!!
643 */
644#define AR5K_RATES_11A { 8, { \
645 255, 255, 255, 255, 255, 255, 255, 255, 6, 4, 2, 0, \
646 7, 5, 3, 1, 255, 255, 255, 255, 255, 255, 255, 255, \
647 255, 255, 255, 255, 255, 255, 255, 255 }, { \
648 { 1, 0, 6000, 11, 140, 0 }, \
649 { 1, 0, 9000, 15, 18, 0 }, \
650 { 1, 0, 12000, 10, 152, 2 }, \
651 { 1, 0, 18000, 14, 36, 2 }, \
652 { 1, 0, 24000, 9, 176, 4 }, \
653 { 1, 0, 36000, 13, 72, 4 }, \
654 { 1, 0, 48000, 8, 96, 4 }, \
655 { 1, 0, 54000, 12, 108, 4 } } \
656}
657
658#define AR5K_RATES_11B { 4, { \
659 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, \
660 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, \
661 3, 2, 1, 0, 255, 255, 255, 255 }, { \
662 { 1, 0, 1000, 27, 130, 0 }, \
663 { 1, IEEE80211_RATE_SHORT_PREAMBLE, 2000, 26, 132, 1 }, \
664 { 1, IEEE80211_RATE_SHORT_PREAMBLE, 5500, 25, 139, 1 }, \
665 { 1, IEEE80211_RATE_SHORT_PREAMBLE, 11000, 24, 150, 1 } } \
666}
667
668#define AR5K_RATES_11G { 12, { \
669 255, 255, 255, 255, 255, 255, 255, 255, 10, 8, 6, 4, \
670 11, 9, 7, 5, 255, 255, 255, 255, 255, 255, 255, 255, \
671 3, 2, 1, 0, 255, 255, 255, 255 }, { \
672 { 1, 0, 1000, 27, 2, 0 }, \
673 { 1, IEEE80211_RATE_SHORT_PREAMBLE, 2000, 26, 4, 1 }, \
674 { 1, IEEE80211_RATE_SHORT_PREAMBLE, 5500, 25, 11, 1 }, \
675 { 1, IEEE80211_RATE_SHORT_PREAMBLE, 11000, 24, 22, 1 }, \
676 { 0, 0, 6000, 11, 12, 4 }, \
677 { 0, 0, 9000, 15, 18, 4 }, \
678 { 1, 0, 12000, 10, 24, 6 }, \
679 { 1, 0, 18000, 14, 36, 6 }, \
680 { 1, 0, 24000, 9, 48, 8 }, \
681 { 1, 0, 36000, 13, 72, 8 }, \
682 { 1, 0, 48000, 8, 96, 8 }, \
683 { 1, 0, 54000, 12, 108, 8 } } \
684}
685 600
686#define AR5K_RATES_TURBO { 8, { \ 601/* B */
687 255, 255, 255, 255, 255, 255, 255, 255, 6, 4, 2, 0, \ 602#define ATH5K_RATE_CODE_1M 0x1B
688 7, 5, 3, 1, 255, 255, 255, 255, 255, 255, 255, 255, \ 603#define ATH5K_RATE_CODE_2M 0x1A
689 255, 255, 255, 255, 255, 255, 255, 255 }, { \ 604#define ATH5K_RATE_CODE_5_5M 0x19
690 { 1, MODULATION_TURBO, 6000, 11, 140, 0 }, \ 605#define ATH5K_RATE_CODE_11M 0x18
691 { 1, MODULATION_TURBO, 9000, 15, 18, 0 }, \ 606/* A and G */
692 { 1, MODULATION_TURBO, 12000, 10, 152, 2 }, \ 607#define ATH5K_RATE_CODE_6M 0x0B
693 { 1, MODULATION_TURBO, 18000, 14, 36, 2 }, \ 608#define ATH5K_RATE_CODE_9M 0x0F
694 { 1, MODULATION_TURBO, 24000, 9, 176, 4 }, \ 609#define ATH5K_RATE_CODE_12M 0x0A
695 { 1, MODULATION_TURBO, 36000, 13, 72, 4 }, \ 610#define ATH5K_RATE_CODE_18M 0x0E
696 { 1, MODULATION_TURBO, 48000, 8, 96, 4 }, \ 611#define ATH5K_RATE_CODE_24M 0x09
697 { 1, MODULATION_TURBO, 54000, 12, 108, 4 } } \ 612#define ATH5K_RATE_CODE_36M 0x0D
698} 613#define ATH5K_RATE_CODE_48M 0x08
614#define ATH5K_RATE_CODE_54M 0x0C
615/* XR */
616#define ATH5K_RATE_CODE_XR_500K 0x07
617#define ATH5K_RATE_CODE_XR_1M 0x02
618#define ATH5K_RATE_CODE_XR_2M 0x06
619#define ATH5K_RATE_CODE_XR_3M 0x01
699 620
700#define AR5K_RATES_XR { 12, { \
701 255, 3, 1, 255, 255, 255, 2, 0, 10, 8, 6, 4, \
702 11, 9, 7, 5, 255, 255, 255, 255, 255, 255, 255, 255, \
703 255, 255, 255, 255, 255, 255, 255, 255 }, { \
704 { 1, MODULATION_XR, 500, 7, 129, 0 }, \
705 { 1, MODULATION_XR, 1000, 2, 139, 1 }, \
706 { 1, MODULATION_XR, 2000, 6, 150, 2 }, \
707 { 1, MODULATION_XR, 3000, 1, 150, 3 }, \
708 { 1, 0, 6000, 11, 140, 4 }, \
709 { 1, 0, 9000, 15, 18, 4 }, \
710 { 1, 0, 12000, 10, 152, 6 }, \
711 { 1, 0, 18000, 14, 36, 6 }, \
712 { 1, 0, 24000, 9, 176, 8 }, \
713 { 1, 0, 36000, 13, 72, 8 }, \
714 { 1, 0, 48000, 8, 96, 8 }, \
715 { 1, 0, 54000, 12, 108, 8 } } \
716}
717 621
718/* 622/*
719 * Crypto definitions 623 * Crypto definitions
diff --git a/drivers/net/wireless/ath5k/base.c b/drivers/net/wireless/ath5k/base.c
index e8564095b2f8..114520258b78 100644
--- a/drivers/net/wireless/ath5k/base.c
+++ b/drivers/net/wireless/ath5k/base.c
@@ -132,6 +132,48 @@ static struct ath5k_srev_name srev_names[] = {
132 { "xxxxx", AR5K_VERSION_RAD, AR5K_SREV_UNKNOWN }, 132 { "xxxxx", AR5K_VERSION_RAD, AR5K_SREV_UNKNOWN },
133}; 133};
134 134
135static struct ieee80211_rate ath5k_rates[] = {
136 { .bitrate = 10,
137 .hw_value = ATH5K_RATE_CODE_1M, },
138 { .bitrate = 20,
139 .hw_value = ATH5K_RATE_CODE_2M,
140 .hw_value_short = ATH5K_RATE_CODE_2M | AR5K_SET_SHORT_PREAMBLE,
141 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
142 { .bitrate = 55,
143 .hw_value = ATH5K_RATE_CODE_5_5M,
144 .hw_value_short = ATH5K_RATE_CODE_5_5M | AR5K_SET_SHORT_PREAMBLE,
145 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
146 { .bitrate = 110,
147 .hw_value = ATH5K_RATE_CODE_11M,
148 .hw_value_short = ATH5K_RATE_CODE_11M | AR5K_SET_SHORT_PREAMBLE,
149 .flags = IEEE80211_RATE_SHORT_PREAMBLE },
150 { .bitrate = 60,
151 .hw_value = ATH5K_RATE_CODE_6M,
152 .flags = 0 },
153 { .bitrate = 90,
154 .hw_value = ATH5K_RATE_CODE_9M,
155 .flags = 0 },
156 { .bitrate = 120,
157 .hw_value = ATH5K_RATE_CODE_12M,
158 .flags = 0 },
159 { .bitrate = 180,
160 .hw_value = ATH5K_RATE_CODE_18M,
161 .flags = 0 },
162 { .bitrate = 240,
163 .hw_value = ATH5K_RATE_CODE_24M,
164 .flags = 0 },
165 { .bitrate = 360,
166 .hw_value = ATH5K_RATE_CODE_36M,
167 .flags = 0 },
168 { .bitrate = 480,
169 .hw_value = ATH5K_RATE_CODE_48M,
170 .flags = 0 },
171 { .bitrate = 540,
172 .hw_value = ATH5K_RATE_CODE_54M,
173 .flags = 0 },
174 /* XR missing */
175};
176
135/* 177/*
136 * Prototypes - PCI stack related functions 178 * Prototypes - PCI stack related functions
137 */ 179 */
@@ -219,20 +261,16 @@ static void ath5k_detach(struct pci_dev *pdev,
219 struct ieee80211_hw *hw); 261 struct ieee80211_hw *hw);
220/* Channel/mode setup */ 262/* Channel/mode setup */
221static inline short ath5k_ieee2mhz(short chan); 263static inline short ath5k_ieee2mhz(short chan);
222static unsigned int ath5k_copy_rates(struct ieee80211_rate *rates,
223 const struct ath5k_rate_table *rt,
224 unsigned int max);
225static unsigned int ath5k_copy_channels(struct ath5k_hw *ah, 264static unsigned int ath5k_copy_channels(struct ath5k_hw *ah,
226 struct ieee80211_channel *channels, 265 struct ieee80211_channel *channels,
227 unsigned int mode, 266 unsigned int mode,
228 unsigned int max); 267 unsigned int max);
229static int ath5k_getchannels(struct ieee80211_hw *hw); 268static int ath5k_setup_bands(struct ieee80211_hw *hw);
230static int ath5k_chan_set(struct ath5k_softc *sc, 269static int ath5k_chan_set(struct ath5k_softc *sc,
231 struct ieee80211_channel *chan); 270 struct ieee80211_channel *chan);
232static void ath5k_setcurmode(struct ath5k_softc *sc, 271static void ath5k_setcurmode(struct ath5k_softc *sc,
233 unsigned int mode); 272 unsigned int mode);
234static void ath5k_mode_setup(struct ath5k_softc *sc); 273static void ath5k_mode_setup(struct ath5k_softc *sc);
235static void ath5k_set_total_hw_rates(struct ath5k_softc *sc);
236 274
237/* Descriptor setup */ 275/* Descriptor setup */
238static int ath5k_desc_alloc(struct ath5k_softc *sc, 276static int ath5k_desc_alloc(struct ath5k_softc *sc,
@@ -646,7 +684,6 @@ err_no_irq:
646#endif /* CONFIG_PM */ 684#endif /* CONFIG_PM */
647 685
648 686
649
650/***********************\ 687/***********************\
651* Driver Initialization * 688* Driver Initialization *
652\***********************/ 689\***********************/
@@ -688,15 +725,12 @@ ath5k_attach(struct pci_dev *pdev, struct ieee80211_hw *hw)
688 * on settings like the phy mode and regulatory 725 * on settings like the phy mode and regulatory
689 * domain restrictions. 726 * domain restrictions.
690 */ 727 */
691 ret = ath5k_getchannels(hw); 728 ret = ath5k_setup_bands(hw);
692 if (ret) { 729 if (ret) {
693 ATH5K_ERR(sc, "can't get channels\n"); 730 ATH5K_ERR(sc, "can't get channels\n");
694 goto err; 731 goto err;
695 } 732 }
696 733
697 /* Set *_rates so we can map hw rate index */
698 ath5k_set_total_hw_rates(sc);
699
700 /* NB: setup here so ath5k_rate_update is happy */ 734 /* NB: setup here so ath5k_rate_update is happy */
701 if (test_bit(AR5K_MODE_11A, ah->ah_modes)) 735 if (test_bit(AR5K_MODE_11A, ah->ah_modes))
702 ath5k_setcurmode(sc, AR5K_MODE_11A); 736 ath5k_setcurmode(sc, AR5K_MODE_11A);
@@ -813,27 +847,6 @@ ath5k_ieee2mhz(short chan)
813} 847}
814 848
815static unsigned int 849static unsigned int
816ath5k_copy_rates(struct ieee80211_rate *rates,
817 const struct ath5k_rate_table *rt,
818 unsigned int max)
819{
820 unsigned int i, count;
821
822 if (rt == NULL)
823 return 0;
824
825 for (i = 0, count = 0; i < rt->rate_count && max > 0; i++) {
826 rates[count].bitrate = rt->rates[i].rate_kbps / 100;
827 rates[count].hw_value = rt->rates[i].rate_code;
828 rates[count].flags = rt->rates[i].modulation;
829 count++;
830 max--;
831 }
832
833 return count;
834}
835
836static unsigned int
837ath5k_copy_channels(struct ath5k_hw *ah, 850ath5k_copy_channels(struct ath5k_hw *ah,
838 struct ieee80211_channel *channels, 851 struct ieee80211_channel *channels,
839 unsigned int mode, 852 unsigned int mode,
@@ -895,74 +908,97 @@ ath5k_copy_channels(struct ath5k_hw *ah,
895 return count; 908 return count;
896} 909}
897 910
911static void
912ath5k_setup_rate_idx(struct ath5k_softc *sc, struct ieee80211_supported_band *b)
913{
914 u8 i;
915
916 for (i = 0; i < AR5K_MAX_RATES; i++)
917 sc->rate_idx[b->band][i] = -1;
918
919 for (i = 0; i < b->n_bitrates; i++) {
920 sc->rate_idx[b->band][b->bitrates[i].hw_value] = i;
921 if (b->bitrates[i].hw_value_short)
922 sc->rate_idx[b->band][b->bitrates[i].hw_value_short] = i;
923 }
924}
925
898static int 926static int
899ath5k_getchannels(struct ieee80211_hw *hw) 927ath5k_setup_bands(struct ieee80211_hw *hw)
900{ 928{
901 struct ath5k_softc *sc = hw->priv; 929 struct ath5k_softc *sc = hw->priv;
902 struct ath5k_hw *ah = sc->ah; 930 struct ath5k_hw *ah = sc->ah;
903 struct ieee80211_supported_band *sbands = sc->sbands; 931 struct ieee80211_supported_band *sband;
904 const struct ath5k_rate_table *hw_rates; 932 int max_c, count_c = 0;
905 unsigned int max_r, max_c, count_r, count_c; 933 int i;
906 int mode2g = AR5K_MODE_11G;
907 934
908 BUILD_BUG_ON(ARRAY_SIZE(sc->sbands) < IEEE80211_NUM_BANDS); 935 BUILD_BUG_ON(ARRAY_SIZE(sc->sbands) < IEEE80211_NUM_BANDS);
909
910 max_r = ARRAY_SIZE(sc->rates);
911 max_c = ARRAY_SIZE(sc->channels); 936 max_c = ARRAY_SIZE(sc->channels);
912 count_r = count_c = 0;
913 937
914 /* 2GHz band */ 938 /* 2GHz band */
915 if (!test_bit(AR5K_MODE_11G, sc->ah->ah_capabilities.cap_mode)) { 939 sband = &sc->sbands[IEEE80211_BAND_2GHZ];
916 mode2g = AR5K_MODE_11B; 940 sband->band = IEEE80211_BAND_2GHZ;
917 if (!test_bit(AR5K_MODE_11B, 941 sband->bitrates = &sc->rates[IEEE80211_BAND_2GHZ][0];
918 sc->ah->ah_capabilities.cap_mode))
919 mode2g = -1;
920 }
921 942
922 if (mode2g > 0) { 943 if (test_bit(AR5K_MODE_11G, sc->ah->ah_capabilities.cap_mode)) {
923 struct ieee80211_supported_band *sband = 944 /* G mode */
924 &sbands[IEEE80211_BAND_2GHZ]; 945 memcpy(sband->bitrates, &ath5k_rates[0],
946 sizeof(struct ieee80211_rate) * 12);
947 sband->n_bitrates = 12;
925 948
926 sband->bitrates = sc->rates;
927 sband->channels = sc->channels; 949 sband->channels = sc->channels;
928
929 sband->band = IEEE80211_BAND_2GHZ;
930 sband->n_channels = ath5k_copy_channels(ah, sband->channels, 950 sband->n_channels = ath5k_copy_channels(ah, sband->channels,
931 mode2g, max_c); 951 AR5K_MODE_11G, max_c);
932
933 hw_rates = ath5k_hw_get_rate_table(ah, mode2g);
934 sband->n_bitrates = ath5k_copy_rates(sband->bitrates,
935 hw_rates, max_r);
936 952
953 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = sband;
937 count_c = sband->n_channels; 954 count_c = sband->n_channels;
938 count_r = sband->n_bitrates; 955 max_c -= count_c;
956 } else if (test_bit(AR5K_MODE_11B, sc->ah->ah_capabilities.cap_mode)) {
957 /* B mode */
958 memcpy(sband->bitrates, &ath5k_rates[0],
959 sizeof(struct ieee80211_rate) * 4);
960 sband->n_bitrates = 4;
961
962 /* 5211 only supports B rates and uses 4bit rate codes
963 * (e.g normally we have 0x1B for 1M, but on 5211 we have 0x0B)
964 * fix them up here:
965 */
966 if (ah->ah_version == AR5K_AR5211) {
967 for (i = 0; i < 4; i++) {
968 sband->bitrates[i].hw_value =
969 sband->bitrates[i].hw_value & 0xF;
970 sband->bitrates[i].hw_value_short =
971 sband->bitrates[i].hw_value_short & 0xF;
972 }
973 }
939 974
940 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = sband; 975 sband->channels = sc->channels;
976 sband->n_channels = ath5k_copy_channels(ah, sband->channels,
977 AR5K_MODE_11B, max_c);
941 978
942 max_r -= count_r; 979 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = sband;
980 count_c = sband->n_channels;
943 max_c -= count_c; 981 max_c -= count_c;
944
945 } 982 }
983 ath5k_setup_rate_idx(sc, sband);
946 984
947 /* 5GHz band */ 985 /* 5GHz band, A mode */
948
949 if (test_bit(AR5K_MODE_11A, sc->ah->ah_capabilities.cap_mode)) { 986 if (test_bit(AR5K_MODE_11A, sc->ah->ah_capabilities.cap_mode)) {
950 struct ieee80211_supported_band *sband = 987 sband = &sc->sbands[IEEE80211_BAND_5GHZ];
951 &sbands[IEEE80211_BAND_5GHZ]; 988 sband->band = IEEE80211_BAND_5GHZ;
989 sband->bitrates = &sc->rates[IEEE80211_BAND_5GHZ][0];
952 990
953 sband->bitrates = &sc->rates[count_r]; 991 memcpy(sband->bitrates, &ath5k_rates[4],
954 sband->channels = &sc->channels[count_c]; 992 sizeof(struct ieee80211_rate) * 8);
993 sband->n_bitrates = 8;
955 994
956 sband->band = IEEE80211_BAND_5GHZ; 995 sband->channels = &sc->channels[count_c];
957 sband->n_channels = ath5k_copy_channels(ah, sband->channels, 996 sband->n_channels = ath5k_copy_channels(ah, sband->channels,
958 AR5K_MODE_11A, max_c); 997 AR5K_MODE_11A, max_c);
959 998
960 hw_rates = ath5k_hw_get_rate_table(ah, AR5K_MODE_11A);
961 sband->n_bitrates = ath5k_copy_rates(sband->bitrates,
962 hw_rates, max_r);
963
964 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = sband; 999 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = sband;
965 } 1000 }
1001 ath5k_setup_rate_idx(sc, sband);
966 1002
967 ath5k_debug_dump_bands(sc); 1003 ath5k_debug_dump_bands(sc);
968 1004
@@ -1031,75 +1067,13 @@ ath5k_mode_setup(struct ath5k_softc *sc)
1031 ATH5K_DBG(sc, ATH5K_DEBUG_MODE, "RX filter 0x%x\n", rfilt); 1067 ATH5K_DBG(sc, ATH5K_DEBUG_MODE, "RX filter 0x%x\n", rfilt);
1032} 1068}
1033 1069
1034/*
1035 * Match the hw provided rate index (through descriptors)
1036 * to an index for sc->curband->bitrates, so it can be used
1037 * by the stack.
1038 *
1039 * This one is a little bit tricky but i think i'm right
1040 * about this...
1041 *
1042 * We have 4 rate tables in the following order:
1043 * XR (4 rates)
1044 * 802.11a (8 rates)
1045 * 802.11b (4 rates)
1046 * 802.11g (12 rates)
1047 * that make the hw rate table.
1048 *
1049 * Lets take a 5211 for example that supports a and b modes only.
1050 * First comes the 802.11a table and then 802.11b (total 12 rates).
1051 * When hw returns eg. 11 it points to the last 802.11b rate (11Mbit),
1052 * if it returns 2 it points to the second 802.11a rate etc.
1053 *
1054 * Same goes for 5212 who has xr/a/b/g support (total 28 rates).
1055 * First comes the XR table, then 802.11a, 802.11b and 802.11g.
1056 * When hw returns eg. 27 it points to the last 802.11g rate (54Mbits) etc
1057 */
1058static void
1059ath5k_set_total_hw_rates(struct ath5k_softc *sc) {
1060
1061 struct ath5k_hw *ah = sc->ah;
1062
1063 if (test_bit(AR5K_MODE_11A, ah->ah_modes))
1064 sc->a_rates = 8;
1065
1066 if (test_bit(AR5K_MODE_11B, ah->ah_modes))
1067 sc->b_rates = 4;
1068
1069 if (test_bit(AR5K_MODE_11G, ah->ah_modes))
1070 sc->g_rates = 12;
1071
1072 /* XXX: Need to see what what happens when
1073 xr disable bits in eeprom are set */
1074 if (ah->ah_version >= AR5K_AR5212)
1075 sc->xr_rates = 4;
1076
1077}
1078
1079static inline int 1070static inline int
1080ath5k_hw_to_driver_rix(struct ath5k_softc *sc, int hw_rix) { 1071ath5k_hw_to_driver_rix(struct ath5k_softc *sc, int hw_rix)
1081 1072{
1082 int mac80211_rix; 1073 WARN_ON(hw_rix < 0 || hw_rix > AR5K_MAX_RATES);
1083 1074 return sc->rate_idx[sc->curband->band][hw_rix];
1084 if(sc->curband->band == IEEE80211_BAND_2GHZ) {
1085 /* We setup a g ratetable for both b/g modes */
1086 mac80211_rix =
1087 hw_rix - sc->b_rates - sc->a_rates - sc->xr_rates;
1088 } else {
1089 mac80211_rix = hw_rix - sc->xr_rates;
1090 }
1091
1092 /* Something went wrong, fallback to basic rate for this band */
1093 if ((mac80211_rix >= sc->curband->n_bitrates) ||
1094 (mac80211_rix <= 0 ))
1095 mac80211_rix = 1;
1096
1097 return mac80211_rix;
1098} 1075}
1099 1076
1100
1101
1102
1103/***************\ 1077/***************\
1104* Buffers setup * 1078* Buffers setup *
1105\***************/ 1079\***************/
@@ -1788,6 +1762,12 @@ accept:
1788 rxs.rate_idx = ath5k_hw_to_driver_rix(sc, rs.rs_rate); 1762 rxs.rate_idx = ath5k_hw_to_driver_rix(sc, rs.rs_rate);
1789 rxs.flag |= ath5k_rx_decrypted(sc, ds, skb, &rs); 1763 rxs.flag |= ath5k_rx_decrypted(sc, ds, skb, &rs);
1790 1764
1765#if 0 /* add rxs.flag SHORTPRE once it is in mac80211 */
1766 if (rs.rs_rate >= ATH5K_RATE_CODE_2M &&
1767 rs.rs_rate <= ATH5K_RATE_CODE_11M &&
1768 rs.rs_rate & AR5K_SET_SHORT_PREAMBLE)
1769 rxs.flag |= RX_FLAG_SHORTPRE;
1770#endif
1791 ath5k_debug_dump_skb(sc, skb, "RX ", 0); 1771 ath5k_debug_dump_skb(sc, skb, "RX ", 0);
1792 1772
1793 /* check beacons in IBSS mode */ 1773 /* check beacons in IBSS mode */
diff --git a/drivers/net/wireless/ath5k/base.h b/drivers/net/wireless/ath5k/base.h
index d7e03e6b8271..248e32eb6cb3 100644
--- a/drivers/net/wireless/ath5k/base.h
+++ b/drivers/net/wireless/ath5k/base.h
@@ -111,17 +111,13 @@ struct ath5k_softc {
111 struct ieee80211_hw *hw; /* IEEE 802.11 common */ 111 struct ieee80211_hw *hw; /* IEEE 802.11 common */
112 struct ieee80211_supported_band sbands[IEEE80211_NUM_BANDS]; 112 struct ieee80211_supported_band sbands[IEEE80211_NUM_BANDS];
113 struct ieee80211_channel channels[ATH_CHAN_MAX]; 113 struct ieee80211_channel channels[ATH_CHAN_MAX];
114 struct ieee80211_rate rates[AR5K_MAX_RATES * IEEE80211_NUM_BANDS]; 114 struct ieee80211_rate rates[IEEE80211_NUM_BANDS][AR5K_MAX_RATES];
115 u8 rate_idx[IEEE80211_NUM_BANDS][AR5K_MAX_RATES];
115 enum ieee80211_if_types opmode; 116 enum ieee80211_if_types opmode;
116 struct ath5k_hw *ah; /* Atheros HW */ 117 struct ath5k_hw *ah; /* Atheros HW */
117 118
118 struct ieee80211_supported_band *curband; 119 struct ieee80211_supported_band *curband;
119 120
120 u8 a_rates;
121 u8 b_rates;
122 u8 g_rates;
123 u8 xr_rates;
124
125#ifdef CONFIG_ATH5K_DEBUG 121#ifdef CONFIG_ATH5K_DEBUG
126 struct ath5k_dbg_info debug; /* debug info */ 122 struct ath5k_dbg_info debug; /* debug info */
127#endif /* CONFIG_ATH5K_DEBUG */ 123#endif /* CONFIG_ATH5K_DEBUG */
diff --git a/drivers/net/wireless/ath5k/hw.c b/drivers/net/wireless/ath5k/hw.c
index b335d3323057..b987aa1e0f77 100644
--- a/drivers/net/wireless/ath5k/hw.c
+++ b/drivers/net/wireless/ath5k/hw.c
@@ -31,13 +31,6 @@
31#include "base.h" 31#include "base.h"
32#include "debug.h" 32#include "debug.h"
33 33
34/* Rate tables */
35static const struct ath5k_rate_table ath5k_rt_11a = AR5K_RATES_11A;
36static const struct ath5k_rate_table ath5k_rt_11b = AR5K_RATES_11B;
37static const struct ath5k_rate_table ath5k_rt_11g = AR5K_RATES_11G;
38static const struct ath5k_rate_table ath5k_rt_turbo = AR5K_RATES_TURBO;
39static const struct ath5k_rate_table ath5k_rt_xr = AR5K_RATES_XR;
40
41/* Prototypes */ 34/* Prototypes */
42static int ath5k_hw_nic_reset(struct ath5k_hw *, u32); 35static int ath5k_hw_nic_reset(struct ath5k_hw *, u32);
43static int ath5k_hw_nic_wakeup(struct ath5k_hw *, int, bool); 36static int ath5k_hw_nic_wakeup(struct ath5k_hw *, int, bool);
@@ -521,34 +514,6 @@ static int ath5k_hw_nic_wakeup(struct ath5k_hw *ah, int flags, bool initial)
521} 514}
522 515
523/* 516/*
524 * Get the rate table for a specific operation mode
525 */
526const struct ath5k_rate_table *ath5k_hw_get_rate_table(struct ath5k_hw *ah,
527 unsigned int mode)
528{
529 ATH5K_TRACE(ah->ah_sc);
530
531 if (!test_bit(mode, ah->ah_capabilities.cap_mode))
532 return NULL;
533
534 /* Get rate tables */
535 switch (mode) {
536 case AR5K_MODE_11A:
537 return &ath5k_rt_11a;
538 case AR5K_MODE_11A_TURBO:
539 return &ath5k_rt_turbo;
540 case AR5K_MODE_11B:
541 return &ath5k_rt_11b;
542 case AR5K_MODE_11G:
543 return &ath5k_rt_11g;
544 case AR5K_MODE_11G_TURBO:
545 return &ath5k_rt_xr;
546 }
547
548 return NULL;
549}
550
551/*
552 * Free the ath5k_hw struct 517 * Free the ath5k_hw struct
553 */ 518 */
554void ath5k_hw_detach(struct ath5k_hw *ah) 519void ath5k_hw_detach(struct ath5k_hw *ah)
@@ -618,45 +583,42 @@ static inline int ath5k_hw_write_ofdm_timings(struct ath5k_hw *ah,
618 return 0; 583 return 0;
619} 584}
620 585
586
587/*
588 * index into rates for control rates, we can set it up like this because
589 * this is only used for AR5212 and we know it supports G mode
590 */
591static int control_rates[] =
592 { 0, 1, 1, 1, 4, 4, 6, 6, 8, 8, 8, 8 };
593
621/** 594/**
622 * ath5k_hw_write_rate_duration - set rate duration during hw resets 595 * ath5k_hw_write_rate_duration - set rate duration during hw resets
623 * 596 *
624 * @ah: the &struct ath5k_hw 597 * @ah: the &struct ath5k_hw
625 * @mode: one of enum ath5k_driver_mode 598 * @mode: one of enum ath5k_driver_mode
626 * 599 *
627 * Write the rate duration table for the current mode upon hw reset. This 600 * Write the rate duration table upon hw reset. This is a helper for
628 * is a helper for ath5k_hw_reset(). It seems all this is doing is setting 601 * ath5k_hw_reset(). It seems all this is doing is setting an ACK timeout for
629 * an ACK timeout for the hardware for the current mode for each rate. The 602 * the hardware for the current mode for each rate. The rates which are capable
630 * rates which are capable of short preamble (802.11b rates 2Mbps, 5.5Mbps, 603 * of short preamble (802.11b rates 2Mbps, 5.5Mbps, and 11Mbps) have another
631 * and 11Mbps) have another register for the short preamble ACK timeout 604 * register for the short preamble ACK timeout calculation.
632 * calculation.
633 *
634 */ 605 */
635static inline void ath5k_hw_write_rate_duration(struct ath5k_hw *ah, 606static inline void ath5k_hw_write_rate_duration(struct ath5k_hw *ah,
636 unsigned int mode) 607 unsigned int mode)
637{ 608{
638 struct ath5k_softc *sc = ah->ah_sc; 609 struct ath5k_softc *sc = ah->ah_sc;
639 const struct ath5k_rate_table *rt; 610 struct ieee80211_rate *rate;
640 struct ieee80211_rate srate = {};
641 unsigned int i; 611 unsigned int i;
642 612
643 /* Get rate table for the current operating mode */
644 rt = ath5k_hw_get_rate_table(ah, mode);
645
646 /* Write rate duration table */ 613 /* Write rate duration table */
647 for (i = 0; i < rt->rate_count; i++) { 614 for (i = 0; i < sc->sbands[IEEE80211_BAND_2GHZ].n_bitrates; i++) {
648 const struct ath5k_rate *rate, *control_rate;
649
650 u32 reg; 615 u32 reg;
651 u16 tx_time; 616 u16 tx_time;
652 617
653 rate = &rt->rates[i]; 618 rate = &sc->sbands[IEEE80211_BAND_2GHZ].bitrates[control_rates[i]];
654 control_rate = &rt->rates[rate->control_rate];
655 619
656 /* Set ACK timeout */ 620 /* Set ACK timeout */
657 reg = AR5K_RATE_DUR(rate->rate_code); 621 reg = AR5K_RATE_DUR(rate->hw_value);
658
659 srate.bitrate = control_rate->rate_kbps/100;
660 622
661 /* An ACK frame consists of 10 bytes. If you add the FCS, 623 /* An ACK frame consists of 10 bytes. If you add the FCS,
662 * which ieee80211_generic_frame_duration() adds, 624 * which ieee80211_generic_frame_duration() adds,
@@ -665,11 +627,11 @@ static inline void ath5k_hw_write_rate_duration(struct ath5k_hw *ah,
665 * ieee80211_duration() for a brief description of 627 * ieee80211_duration() for a brief description of
666 * what rate we should choose to TX ACKs. */ 628 * what rate we should choose to TX ACKs. */
667 tx_time = le16_to_cpu(ieee80211_generic_frame_duration(sc->hw, 629 tx_time = le16_to_cpu(ieee80211_generic_frame_duration(sc->hw,
668 sc->vif, 10, &srate)); 630 sc->vif, 10, rate));
669 631
670 ath5k_hw_reg_write(ah, tx_time, reg); 632 ath5k_hw_reg_write(ah, tx_time, reg);
671 633
672 if (!HAS_SHPREAMBLE(i)) 634 if (!(rate->flags & IEEE80211_RATE_SHORT_PREAMBLE))
673 continue; 635 continue;
674 636
675 /* 637 /*
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-01 20:39:43 -0400