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authorMichael Buesch <mb@bu3sch.de>2008-01-18 01:09:25 +0100
committerDavid S. Miller <davem@davemloft.net>2008-01-28 15:10:44 -0800
commit95b66bad55b846e02e5b5c8b32ac4a659c28149b (patch)
treeec1f46c1cf212bc5de6a0450cdcc002481a8e032 /drivers/net/wireless/b43/nphy.c
parentc09c7237eadc65916305835ca1e3ee8a03f01159 (diff)
b43: Add more N-PHY init code
This also adds lots of TODOs. Oh well. Lots of work. :) Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/b43/nphy.c')
-rw-r--r--drivers/net/wireless/b43/nphy.c292
1 files changed, 291 insertions, 1 deletions
diff --git a/drivers/net/wireless/b43/nphy.c b/drivers/net/wireless/b43/nphy.c
index 0b421b120a1..705131ef4bf 100644
--- a/drivers/net/wireless/b43/nphy.c
+++ b/drivers/net/wireless/b43/nphy.c
@@ -29,6 +29,8 @@
#include "nphy.h"
#include "tables_nphy.h"
+#include <linux/delay.h>
+
void b43_nphy_set_rxantenna(struct b43_wldev *dev, int antenna)
{//TODO
@@ -191,9 +193,297 @@ void b43_nphy_radio_turn_off(struct b43_wldev *dev)
~B43_NPHY_RFCTL_CMD_EN);
}
+#define ntab_upload(dev, offset, data) do { \
+ unsigned int i; \
+ for (i = 0; i < (offset##_SIZE); i++) \
+ b43_ntab_write(dev, (offset) + i, (data)[i]); \
+ } while (0)
+
+/* Upload the N-PHY tables. */
+static void b43_nphy_tables_init(struct b43_wldev *dev)
+{
+ /* Static tables */
+ ntab_upload(dev, B43_NTAB_FRAMESTRUCT, b43_ntab_framestruct);
+ ntab_upload(dev, B43_NTAB_FRAMELT, b43_ntab_framelookup);
+ ntab_upload(dev, B43_NTAB_TMAP, b43_ntab_tmap);
+ ntab_upload(dev, B43_NTAB_TDTRN, b43_ntab_tdtrn);
+ ntab_upload(dev, B43_NTAB_INTLEVEL, b43_ntab_intlevel);
+ ntab_upload(dev, B43_NTAB_PILOT, b43_ntab_pilot);
+ ntab_upload(dev, B43_NTAB_PILOTLT, b43_ntab_pilotlt);
+ ntab_upload(dev, B43_NTAB_TDI20A0, b43_ntab_tdi20a0);
+ ntab_upload(dev, B43_NTAB_TDI20A1, b43_ntab_tdi20a1);
+ ntab_upload(dev, B43_NTAB_TDI40A0, b43_ntab_tdi40a0);
+ ntab_upload(dev, B43_NTAB_TDI40A1, b43_ntab_tdi40a1);
+ ntab_upload(dev, B43_NTAB_BDI, b43_ntab_bdi);
+ ntab_upload(dev, B43_NTAB_CHANEST, b43_ntab_channelest);
+ ntab_upload(dev, B43_NTAB_MCS, b43_ntab_mcs);
+
+ /* Volatile tables */
+ ntab_upload(dev, B43_NTAB_NOISEVAR10, b43_ntab_noisevar10);
+ ntab_upload(dev, B43_NTAB_NOISEVAR11, b43_ntab_noisevar11);
+ ntab_upload(dev, B43_NTAB_C0_ESTPLT, b43_ntab_estimatepowerlt0);
+ ntab_upload(dev, B43_NTAB_C1_ESTPLT, b43_ntab_estimatepowerlt1);
+ ntab_upload(dev, B43_NTAB_C0_ADJPLT, b43_ntab_adjustpower0);
+ ntab_upload(dev, B43_NTAB_C1_ADJPLT, b43_ntab_adjustpower1);
+ ntab_upload(dev, B43_NTAB_C0_GAINCTL, b43_ntab_gainctl0);
+ ntab_upload(dev, B43_NTAB_C1_GAINCTL, b43_ntab_gainctl1);
+ ntab_upload(dev, B43_NTAB_C0_IQLT, b43_ntab_iqlt0);
+ ntab_upload(dev, B43_NTAB_C1_IQLT, b43_ntab_iqlt1);
+ ntab_upload(dev, B43_NTAB_C0_LOFEEDTH, b43_ntab_loftlt0);
+ ntab_upload(dev, B43_NTAB_C1_LOFEEDTH, b43_ntab_loftlt1);
+}
+
+static void b43_nphy_workarounds(struct b43_wldev *dev)
+{
+ struct b43_phy *phy = &dev->phy;
+ unsigned int i;
+
+ b43_phy_set(dev, B43_NPHY_IQFLIP,
+ B43_NPHY_IQFLIP_ADC1 | B43_NPHY_IQFLIP_ADC2);
+ //FIXME the following condition is different in the specs.
+ if (1 /* FIXME band is 2.4GHz */) {
+ b43_phy_set(dev, B43_NPHY_CLASSCTL,
+ B43_NPHY_CLASSCTL_CCKEN);
+ } else {
+ b43_phy_mask(dev, B43_NPHY_CLASSCTL,
+ ~B43_NPHY_CLASSCTL_CCKEN);
+ }
+ b43_radio_set(dev, B2055_C1_TX_RF_SPARE, 0x8);
+ b43_phy_write(dev, B43_NPHY_TXFRAMEDELAY, 8);
+
+ /* Fixup some tables */
+ b43_ntab_write(dev, B43_NTAB16(8, 0x00), 0xA);
+ b43_ntab_write(dev, B43_NTAB16(8, 0x10), 0xA);
+ b43_ntab_write(dev, B43_NTAB16(8, 0x02), 0xCDAA);
+ b43_ntab_write(dev, B43_NTAB16(8, 0x12), 0xCDAA);
+ b43_ntab_write(dev, B43_NTAB16(8, 0x08), 0);
+ b43_ntab_write(dev, B43_NTAB16(8, 0x18), 0);
+ b43_ntab_write(dev, B43_NTAB16(8, 0x07), 0x7AAB);
+ b43_ntab_write(dev, B43_NTAB16(8, 0x17), 0x7AAB);
+ b43_ntab_write(dev, B43_NTAB16(8, 0x06), 0x800);
+ b43_ntab_write(dev, B43_NTAB16(8, 0x16), 0x800);
+
+ b43_phy_write(dev, B43_NPHY_RFCTL_LUT_TRSW_LO1, 0x2D8);
+ b43_phy_write(dev, B43_NPHY_RFCTL_LUT_TRSW_UP1, 0x301);
+ b43_phy_write(dev, B43_NPHY_RFCTL_LUT_TRSW_LO2, 0x2D8);
+ b43_phy_write(dev, B43_NPHY_RFCTL_LUT_TRSW_UP2, 0x301);
+
+ //TODO set RF sequence
+
+ /* Set narrowband clip threshold */
+ b43_phy_write(dev, B43_NPHY_C1_NBCLIPTHRES, 66);
+ b43_phy_write(dev, B43_NPHY_C2_NBCLIPTHRES, 66);
+
+ /* Set wideband clip 2 threshold */
+ b43_phy_maskset(dev, B43_NPHY_C1_CLIPWBTHRES,
+ ~B43_NPHY_C1_CLIPWBTHRES_CLIP2,
+ 21 << B43_NPHY_C1_CLIPWBTHRES_CLIP2_SHIFT);
+ b43_phy_maskset(dev, B43_NPHY_C2_CLIPWBTHRES,
+ ~B43_NPHY_C2_CLIPWBTHRES_CLIP2,
+ 21 << B43_NPHY_C2_CLIPWBTHRES_CLIP2_SHIFT);
+
+ /* Set Clip 2 detect */
+ b43_phy_set(dev, B43_NPHY_C1_CGAINI,
+ B43_NPHY_C1_CGAINI_CL2DETECT);
+ b43_phy_set(dev, B43_NPHY_C2_CGAINI,
+ B43_NPHY_C2_CGAINI_CL2DETECT);
+
+ if (0 /*FIXME*/) {
+ /* Set dwell lengths */
+ b43_phy_write(dev, B43_NPHY_CLIP1_NBDWELL_LEN, 43);
+ b43_phy_write(dev, B43_NPHY_CLIP2_NBDWELL_LEN, 43);
+ b43_phy_write(dev, B43_NPHY_W1CLIP1_DWELL_LEN, 9);
+ b43_phy_write(dev, B43_NPHY_W1CLIP2_DWELL_LEN, 9);
+
+ /* Set gain backoff */
+ b43_phy_maskset(dev, B43_NPHY_C1_CGAINI,
+ ~B43_NPHY_C1_CGAINI_GAINBKOFF,
+ 1 << B43_NPHY_C1_CGAINI_GAINBKOFF_SHIFT);
+ b43_phy_maskset(dev, B43_NPHY_C2_CGAINI,
+ ~B43_NPHY_C2_CGAINI_GAINBKOFF,
+ 1 << B43_NPHY_C2_CGAINI_GAINBKOFF_SHIFT);
+
+ /* Set HPVGA2 index */
+ b43_phy_maskset(dev, B43_NPHY_C1_INITGAIN,
+ ~B43_NPHY_C1_INITGAIN_HPVGA2,
+ 6 << B43_NPHY_C1_INITGAIN_HPVGA2_SHIFT);
+ b43_phy_maskset(dev, B43_NPHY_C2_INITGAIN,
+ ~B43_NPHY_C2_INITGAIN_HPVGA2,
+ 6 << B43_NPHY_C2_INITGAIN_HPVGA2_SHIFT);
+
+ //FIXME verify that the specs really mean to use autoinc here.
+ for (i = 0; i < 3; i++)
+ b43_ntab_write(dev, B43_NTAB16(7, 0x106) + i, 0x673);
+ }
+
+ /* Set minimum gain value */
+ b43_phy_maskset(dev, B43_NPHY_C1_MINMAX_GAIN,
+ ~B43_NPHY_C1_MINGAIN,
+ 23 << B43_NPHY_C1_MINGAIN_SHIFT);
+ b43_phy_maskset(dev, B43_NPHY_C2_MINMAX_GAIN,
+ ~B43_NPHY_C2_MINGAIN,
+ 23 << B43_NPHY_C2_MINGAIN_SHIFT);
+
+ if (phy->rev < 2) {
+ b43_phy_mask(dev, B43_NPHY_SCRAM_SIGCTL,
+ ~B43_NPHY_SCRAM_SIGCTL_SCM);
+ }
+
+ /* Set phase track alpha and beta */
+ b43_phy_write(dev, B43_NPHY_PHASETR_A0, 0x125);
+ b43_phy_write(dev, B43_NPHY_PHASETR_A1, 0x1B3);
+ b43_phy_write(dev, B43_NPHY_PHASETR_A2, 0x105);
+ b43_phy_write(dev, B43_NPHY_PHASETR_B0, 0x16E);
+ b43_phy_write(dev, B43_NPHY_PHASETR_B1, 0xCD);
+ b43_phy_write(dev, B43_NPHY_PHASETR_B2, 0x20);
+}
+
+static void b43_nphy_reset_cca(struct b43_wldev *dev)
+{
+ u16 bbcfg;
+
+ ssb_write32(dev->dev, SSB_TMSLOW,
+ ssb_read32(dev->dev, SSB_TMSLOW) | SSB_TMSLOW_FGC);
+ bbcfg = b43_phy_read(dev, B43_NPHY_BBCFG);
+ b43_phy_set(dev, B43_NPHY_BBCFG, B43_NPHY_BBCFG_RSTCCA);
+ b43_phy_write(dev, B43_NPHY_BBCFG,
+ bbcfg & ~B43_NPHY_BBCFG_RSTCCA);
+ ssb_write32(dev->dev, SSB_TMSLOW,
+ ssb_read32(dev->dev, SSB_TMSLOW) & ~SSB_TMSLOW_FGC);
+}
+
+enum b43_nphy_rf_sequence {
+ B43_RFSEQ_RX2TX,
+ B43_RFSEQ_TX2RX,
+ B43_RFSEQ_RESET2RX,
+ B43_RFSEQ_UPDATE_GAINH,
+ B43_RFSEQ_UPDATE_GAINL,
+ B43_RFSEQ_UPDATE_GAINU,
+};
+
+static void b43_nphy_force_rf_sequence(struct b43_wldev *dev,
+ enum b43_nphy_rf_sequence seq)
+{
+ static const u16 trigger[] = {
+ [B43_RFSEQ_RX2TX] = B43_NPHY_RFSEQTR_RX2TX,
+ [B43_RFSEQ_TX2RX] = B43_NPHY_RFSEQTR_TX2RX,
+ [B43_RFSEQ_RESET2RX] = B43_NPHY_RFSEQTR_RST2RX,
+ [B43_RFSEQ_UPDATE_GAINH] = B43_NPHY_RFSEQTR_UPGH,
+ [B43_RFSEQ_UPDATE_GAINL] = B43_NPHY_RFSEQTR_UPGL,
+ [B43_RFSEQ_UPDATE_GAINU] = B43_NPHY_RFSEQTR_UPGU,
+ };
+ int i;
+
+ B43_WARN_ON(seq >= ARRAY_SIZE(trigger));
+
+ b43_phy_set(dev, B43_NPHY_RFSEQMODE,
+ B43_NPHY_RFSEQMODE_CAOVER | B43_NPHY_RFSEQMODE_TROVER);
+ b43_phy_set(dev, B43_NPHY_RFSEQTR, trigger[seq]);
+ for (i = 0; i < 200; i++) {
+ if (!(b43_phy_read(dev, B43_NPHY_RFSEQST) & trigger[seq]))
+ goto ok;
+ msleep(1);
+ }
+ b43err(dev->wl, "RF sequence status timeout\n");
+ok:
+ b43_phy_mask(dev, B43_NPHY_RFSEQMODE,
+ ~(B43_NPHY_RFSEQMODE_CAOVER | B43_NPHY_RFSEQMODE_TROVER));
+}
+
+static void b43_nphy_bphy_init(struct b43_wldev *dev)
+{
+ unsigned int i;
+ u16 val;
+
+ val = 0x1E1F;
+ for (i = 0; i < 14; i++) {
+ b43_phy_write(dev, B43_PHY_N_BMODE(0x88 + i), val);
+ val -= 0x202;
+ }
+ val = 0x3E3F;
+ for (i = 0; i < 16; i++) {
+ b43_phy_write(dev, B43_PHY_N_BMODE(0x97 + i), val);
+ val -= 0x202;
+ }
+ b43_phy_write(dev, B43_PHY_N_BMODE(0x38), 0x668);
+}
+
+/* RSSI Calibration */
+static void b43_nphy_rssi_cal(struct b43_wldev *dev, u8 type)
+{
+ //TODO
+}
+
int b43_phy_initn(struct b43_wldev *dev)
{
- b43err(dev->wl, "IEEE 802.11n devices are not supported, yet.\n");
+ struct b43_phy *phy = &dev->phy;
+ u16 tmp;
+
+ //TODO: Spectral management
+ b43_nphy_tables_init(dev);
+
+ /* Clear all overrides */
+ b43_phy_write(dev, B43_NPHY_RFCTL_OVER, 0);
+ b43_phy_write(dev, B43_NPHY_RFCTL_INTC1, 0);
+ b43_phy_write(dev, B43_NPHY_RFCTL_INTC2, 0);
+ b43_phy_write(dev, B43_NPHY_RFCTL_INTC3, 0);
+ b43_phy_write(dev, B43_NPHY_RFCTL_INTC4, 0);
+ b43_phy_mask(dev, B43_NPHY_RFSEQMODE,
+ ~(B43_NPHY_RFSEQMODE_CAOVER |
+ B43_NPHY_RFSEQMODE_TROVER));
+ b43_phy_write(dev, B43_NPHY_AFECTL_OVER, 0);
+
+ tmp = (phy->rev < 2) ? 64 : 59;
+ b43_phy_maskset(dev, B43_NPHY_BPHY_CTL3,
+ ~B43_NPHY_BPHY_CTL3_SCALE,
+ tmp << B43_NPHY_BPHY_CTL3_SCALE_SHIFT);
+
+ b43_phy_write(dev, B43_NPHY_AFESEQ_TX2RX_PUD_20M, 0x20);
+ b43_phy_write(dev, B43_NPHY_AFESEQ_TX2RX_PUD_40M, 0x20);
+
+ b43_phy_write(dev, B43_NPHY_TXREALFD, 184);
+ b43_phy_write(dev, B43_NPHY_MIMO_CRSTXEXT, 200);
+ b43_phy_write(dev, B43_NPHY_PLOAD_CSENSE_EXTLEN, 80);
+ b43_phy_write(dev, B43_NPHY_C2_BCLIPBKOFF, 511);
+ //TODO MIMO-Config
+ //TODO Update TX/RX chain
+
+ if (phy->rev < 2) {
+ b43_phy_write(dev, B43_NPHY_DUP40_GFBL, 0xAA8);
+ b43_phy_write(dev, B43_NPHY_DUP40_BL, 0x9A4);
+ }
+ b43_nphy_workarounds(dev);
+ b43_nphy_reset_cca(dev);
+
+ ssb_write32(dev->dev, SSB_TMSLOW,
+ ssb_read32(dev->dev, SSB_TMSLOW) | B43_TMSLOW_MACPHYCLKEN);
+ b43_nphy_force_rf_sequence(dev, B43_RFSEQ_RX2TX);
+ b43_nphy_force_rf_sequence(dev, B43_RFSEQ_RESET2RX);
+
+ b43_phy_read(dev, B43_NPHY_CLASSCTL); /* dummy read */
+ //TODO read core1/2 clip1 thres regs
+
+ if (1 /* FIXME Band is 2.4GHz */)
+ b43_nphy_bphy_init(dev);
+ //TODO disable TX power control
+ //TODO Fix the TX power settings
+ //TODO Init periodic calibration with reason 3
+ b43_nphy_rssi_cal(dev, 2);
+ b43_nphy_rssi_cal(dev, 0);
+ b43_nphy_rssi_cal(dev, 1);
+ //TODO get TX gain
+ //TODO init superswitch
+ //TODO calibrate LO
+ //TODO idle TSSI TX pctl
+ //TODO TX power control power setup
+ //TODO table writes
+ //TODO TX power control coefficients
+ //TODO enable TX power control
+ //TODO control antenna selection
+ //TODO init radar detection
+ //TODO reset channel if changed
+
+ b43err(dev->wl, "IEEE 802.11n devices are not supported, yet.\n");
return 0;
}