add some work-in-progress patches for ath5k stability and performance
authornbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73>
Fri, 30 Jan 2009 02:52:21 +0000 (02:52 +0000)
committernbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73>
Fri, 30 Jan 2009 02:52:21 +0000 (02:52 +0000)
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@14277 3c298f89-4303-0410-b956-a3cf2f4a3e73

package/mac80211/patches/320-rx_dma_unmap.patch [new file with mode: 0644]
package/mac80211/patches/330-ath5k_eeprom.patch [new file with mode: 0644]
package/mac80211/patches/340-ath5k_txpower_2413.patch [new file with mode: 0644]

diff --git a/package/mac80211/patches/320-rx_dma_unmap.patch b/package/mac80211/patches/320-rx_dma_unmap.patch
new file mode 100644 (file)
index 0000000..f7cd62a
--- /dev/null
@@ -0,0 +1,37 @@
+When freeing rx dma descriptors, use the right buffer size.
+Fixes kernel oopses on module unload on ixp4xx and most likely
+other platforms as well.
+
+Signed-off-by: Felix Fietkau <nbd@openwrt.org>
+
+--- a/drivers/net/wireless/ath5k/base.c
++++ b/drivers/net/wireless/ath5k/base.c
+@@ -308,6 +308,19 @@ static inline void ath5k_txbuf_free(stru
+       bf->skb = NULL;
+ }
++static inline void ath5k_rxbuf_free(struct ath5k_softc *sc,
++                              struct ath5k_buf *bf)
++{
++      BUG_ON(!bf);
++      if (!bf->skb)
++              return;
++      pci_unmap_single(sc->pdev, bf->skbaddr, sc->rxbufsize,
++                      PCI_DMA_FROMDEVICE);
++      dev_kfree_skb_any(bf->skb);
++      bf->skb = NULL;
++}
++
++
+ /* Queues setup */
+ static struct         ath5k_txq *ath5k_txq_setup(struct ath5k_softc *sc,
+                               int qtype, int subtype);
+@@ -1341,7 +1354,7 @@ ath5k_desc_free(struct ath5k_softc *sc, 
+       list_for_each_entry(bf, &sc->txbuf, list)
+               ath5k_txbuf_free(sc, bf);
+       list_for_each_entry(bf, &sc->rxbuf, list)
+-              ath5k_txbuf_free(sc, bf);
++              ath5k_rxbuf_free(sc, bf);
+       /* Free memory associated with all descriptors */
+       pci_free_consistent(pdev, sc->desc_len, sc->desc, sc->desc_daddr);
diff --git a/package/mac80211/patches/330-ath5k_eeprom.patch b/package/mac80211/patches/330-ath5k_eeprom.patch
new file mode 100644 (file)
index 0000000..a3a0285
--- /dev/null
@@ -0,0 +1,494 @@
+Clean up the eeprom parsing code and prepare the pdgain
+data for 2413, which will be required for power calibration code.
+Also clean up some ugly line wrapping to make the code easier on
+the eyes.
+
+Signed-off-by: Felix Fietkau <nbd@openwrt.org>
+
+--- a/drivers/net/wireless/ath5k/eeprom.c
++++ b/drivers/net/wireless/ath5k/eeprom.c
+@@ -541,31 +541,30 @@ ath5k_eeprom_read_freq_list(struct ath5k
+ {
+       struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom;
+       int o = *offset;
+-      int i = 0;
++      int i;
+       u8 freq1, freq2;
+       int ret;
+       u16 val;
++      ee->ee_n_piers[mode] = 0;
+       while(i < max) {
+               AR5K_EEPROM_READ(o++, val);
+-              freq1 = (val >> 8) & 0xff;
+-              freq2 = val & 0xff;
+-
+-              if (freq1) {
+-                      pc[i++].freq = ath5k_eeprom_bin2freq(ee,
+-                                      freq1, mode);
+-                      ee->ee_n_piers[mode]++;
+-              }
++              freq1 = val & 0xff;
++              if (!freq1)
++                      break;
+-              if (freq2) {
+-                      pc[i++].freq = ath5k_eeprom_bin2freq(ee,
+-                                      freq2, mode);
+-                      ee->ee_n_piers[mode]++;
+-              }
++              pc[i++].freq = ath5k_eeprom_bin2freq(ee,
++                              freq1, mode);
++              ee->ee_n_piers[mode]++;
+-              if (!freq1 || !freq2)
++              freq2 = (val >> 8) & 0xff;
++              if (!freq2)
+                       break;
++
++              pc[i++].freq = ath5k_eeprom_bin2freq(ee,
++                              freq2, mode);
++              ee->ee_n_piers[mode]++;
+       }
+       /* return new offset */
+@@ -918,84 +917,46 @@ ath5k_cal_data_offset_2413(struct ath5k_
+  * curves on eeprom. The final curve (higher power) has an extra
+  * point for better accuracy like RF5112.
+  */
++
+ static int
+-ath5k_eeprom_read_pcal_info_2413(struct ath5k_hw *ah, int mode)
++ath5k_eeprom_parse_pcal_info_2413(struct ath5k_hw *ah, int mode, u32 offset,
++                                  struct ath5k_chan_pcal_info *chinfo)
+ {
+       struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom;
+-      struct ath5k_chan_pcal_info_rf2413 *chan_pcal_info;
+-      struct ath5k_chan_pcal_info *gen_chan_info;
+-      unsigned int i, c;
+-      u32 offset;
++      struct ath5k_chan_pcal_info_rf2413 *pcinfo;
++      unsigned int i;
+       int ret;
+       u16 val;
+-      u8 pd_gains = 0;
+-
+-      if (ee->ee_x_gain[mode] & 0x1) pd_gains++;
+-      if ((ee->ee_x_gain[mode] >> 1) & 0x1) pd_gains++;
+-      if ((ee->ee_x_gain[mode] >> 2) & 0x1) pd_gains++;
+-      if ((ee->ee_x_gain[mode] >> 3) & 0x1) pd_gains++;
+-      ee->ee_pd_gains[mode] = pd_gains;
++      u8 pd_gains;
+-      offset = ath5k_cal_data_offset_2413(ee, mode);
+-      ee->ee_n_piers[mode] = 0;
+-      switch (mode) {
+-      case AR5K_EEPROM_MODE_11A:
+-              if (!AR5K_EEPROM_HDR_11A(ee->ee_header))
+-                      return 0;
+-
+-              ath5k_eeprom_init_11a_pcal_freq(ah, offset);
+-              offset += AR5K_EEPROM_N_5GHZ_CHAN / 2;
+-              gen_chan_info = ee->ee_pwr_cal_a;
+-              break;
+-      case AR5K_EEPROM_MODE_11B:
+-              if (!AR5K_EEPROM_HDR_11B(ee->ee_header))
+-                      return 0;
+-
+-              ath5k_eeprom_init_11bg_2413(ah, mode, offset);
+-              offset += AR5K_EEPROM_N_2GHZ_CHAN_2413 / 2;
+-              gen_chan_info = ee->ee_pwr_cal_b;
+-              break;
+-      case AR5K_EEPROM_MODE_11G:
+-              if (!AR5K_EEPROM_HDR_11G(ee->ee_header))
+-                      return 0;
+-
+-              ath5k_eeprom_init_11bg_2413(ah, mode, offset);
+-              offset += AR5K_EEPROM_N_2GHZ_CHAN_2413 / 2;
+-              gen_chan_info = ee->ee_pwr_cal_g;
+-              break;
+-      default:
+-              return -EINVAL;
+-      }
++      pd_gains = ee->ee_pd_gains[mode];
+       if (pd_gains == 0)
+               return 0;
+       for (i = 0; i < ee->ee_n_piers[mode]; i++) {
+-              chan_pcal_info = &gen_chan_info[i].rf2413_info;
++              pcinfo = &chinfo[i].rf2413_info;
+               /*
+                * Read pwr_i, pddac_i and the first
+                * 2 pd points (pwr, pddac)
+                */
+               AR5K_EEPROM_READ(offset++, val);
+-              chan_pcal_info->pwr_i[0] = val & 0x1f;
+-              chan_pcal_info->pddac_i[0] = (val >> 5) & 0x7f;
+-              chan_pcal_info->pwr[0][0] =
+-                                      (val >> 12) & 0xf;
++              pcinfo->pwr_i[0] = val & 0x1f;
++              pcinfo->pddac_i[0] = (val >> 5) & 0x7f;
++              pcinfo->pwr[0][0] = (val >> 12) & 0xf;
+               AR5K_EEPROM_READ(offset++, val);
+-              chan_pcal_info->pddac[0][0] = val & 0x3f;
+-              chan_pcal_info->pwr[0][1] = (val >> 6) & 0xf;
+-              chan_pcal_info->pddac[0][1] =
+-                                      (val >> 10) & 0x3f;
++              pcinfo->pddac[0][0] = val & 0x3f;
++              pcinfo->pwr[0][1] = (val >> 6) & 0xf;
++              pcinfo->pddac[0][1] = (val >> 10) & 0x3f;
+               AR5K_EEPROM_READ(offset++, val);
+-              chan_pcal_info->pwr[0][2] = val & 0xf;
+-              chan_pcal_info->pddac[0][2] =
+-                                      (val >> 4) & 0x3f;
++              pcinfo->pwr[0][2] = val & 0xf;
++              pcinfo->pddac[0][2] = (val >> 4) & 0x3f;
+-              chan_pcal_info->pwr[0][3] = 0;
+-              chan_pcal_info->pddac[0][3] = 0;
++              pcinfo->pwr[0][3] = 0;
++              pcinfo->pddac[0][3] = 0;
+               if (pd_gains > 1) {
+                       /*
+@@ -1003,44 +964,36 @@ ath5k_eeprom_read_pcal_info_2413(struct 
+                        * so it only has 2 pd points.
+                        * Continue wih pd gain 1.
+                        */
+-                      chan_pcal_info->pwr_i[1] = (val >> 10) & 0x1f;
++                      pcinfo->pwr_i[1] = (val >> 10) & 0x1f;
+-                      chan_pcal_info->pddac_i[1] = (val >> 15) & 0x1;
++                      pcinfo->pddac_i[1] = (val >> 15) & 0x1;
+                       AR5K_EEPROM_READ(offset++, val);
+-                      chan_pcal_info->pddac_i[1] |= (val & 0x3F) << 1;
++                      pcinfo->pddac_i[1] |= (val & 0x3F) << 1;
+-                      chan_pcal_info->pwr[1][0] = (val >> 6) & 0xf;
+-                      chan_pcal_info->pddac[1][0] =
+-                                              (val >> 10) & 0x3f;
++                      pcinfo->pwr[1][0] = (val >> 6) & 0xf;
++                      pcinfo->pddac[1][0] = (val >> 10) & 0x3f;
+                       AR5K_EEPROM_READ(offset++, val);
+-                      chan_pcal_info->pwr[1][1] = val & 0xf;
+-                      chan_pcal_info->pddac[1][1] =
+-                                              (val >> 4) & 0x3f;
+-                      chan_pcal_info->pwr[1][2] =
+-                                              (val >> 10) & 0xf;
++                      pcinfo->pwr[1][1] = val & 0xf;
++                      pcinfo->pddac[1][1] = (val >> 4) & 0x3f;
++                      pcinfo->pwr[1][2] = (val >> 10) & 0xf;
+-                      chan_pcal_info->pddac[1][2] =
+-                                              (val >> 14) & 0x3;
++                      pcinfo->pddac[1][2] = (val >> 14) & 0x3;
+                       AR5K_EEPROM_READ(offset++, val);
+-                      chan_pcal_info->pddac[1][2] |=
+-                                              (val & 0xF) << 2;
++                      pcinfo->pddac[1][2] |= (val & 0xF) << 2;
+-                      chan_pcal_info->pwr[1][3] = 0;
+-                      chan_pcal_info->pddac[1][3] = 0;
++                      pcinfo->pwr[1][3] = 0;
++                      pcinfo->pddac[1][3] = 0;
+               } else if (pd_gains == 1) {
+                       /*
+                        * Pd gain 0 is the last one so
+                        * read the extra point.
+                        */
+-                      chan_pcal_info->pwr[0][3] =
+-                                              (val >> 10) & 0xf;
++                      pcinfo->pwr[0][3] = (val >> 10) & 0xf;
+-                      chan_pcal_info->pddac[0][3] =
+-                                              (val >> 14) & 0x3;
++                      pcinfo->pddac[0][3] = (val >> 14) & 0x3;
+                       AR5K_EEPROM_READ(offset++, val);
+-                      chan_pcal_info->pddac[0][3] |=
+-                                              (val & 0xF) << 2;
++                      pcinfo->pddac[0][3] |= (val & 0xF) << 2;
+               }
+               /*
+@@ -1048,105 +1001,159 @@ ath5k_eeprom_read_pcal_info_2413(struct 
+                * as above.
+                */
+               if (pd_gains > 2) {
+-                      chan_pcal_info->pwr_i[2] = (val >> 4) & 0x1f;
+-                      chan_pcal_info->pddac_i[2] = (val >> 9) & 0x7f;
++                      pcinfo->pwr_i[2] = (val >> 4) & 0x1f;
++                      pcinfo->pddac_i[2] = (val >> 9) & 0x7f;
+                       AR5K_EEPROM_READ(offset++, val);
+-                      chan_pcal_info->pwr[2][0] =
+-                                              (val >> 0) & 0xf;
+-                      chan_pcal_info->pddac[2][0] =
+-                                              (val >> 4) & 0x3f;
+-                      chan_pcal_info->pwr[2][1] =
+-                                              (val >> 10) & 0xf;
+-
+-                      chan_pcal_info->pddac[2][1] =
+-                                              (val >> 14) & 0x3;
+-                      AR5K_EEPROM_READ(offset++, val);
+-                      chan_pcal_info->pddac[2][1] |=
+-                                              (val & 0xF) << 2;
+-
+-                      chan_pcal_info->pwr[2][2] =
+-                                              (val >> 4) & 0xf;
+-                      chan_pcal_info->pddac[2][2] =
+-                                              (val >> 8) & 0x3f;
++                      pcinfo->pwr[2][0] = (val >> 0) & 0xf;
++                      pcinfo->pddac[2][0] = (val >> 4) & 0x3f;
++                      pcinfo->pwr[2][1] = (val >> 10) & 0xf;
+-                      chan_pcal_info->pwr[2][3] = 0;
+-                      chan_pcal_info->pddac[2][3] = 0;
++                      pcinfo->pddac[2][1] = (val >> 14) & 0x3;
++                      AR5K_EEPROM_READ(offset++, val);
++                      pcinfo->pddac[2][1] |= (val & 0xF) << 2;
++
++                      pcinfo->pwr[2][2] = (val >> 4) & 0xf;
++                      pcinfo->pddac[2][2] = (val >> 8) & 0x3f;
++
++                      pcinfo->pwr[2][3] = 0;
++                      pcinfo->pddac[2][3] = 0;
+               } else if (pd_gains == 2) {
+-                      chan_pcal_info->pwr[1][3] =
+-                                              (val >> 4) & 0xf;
+-                      chan_pcal_info->pddac[1][3] =
+-                                              (val >> 8) & 0x3f;
++                      pcinfo->pwr[1][3] = (val >> 4) & 0xf;
++                      pcinfo->pddac[1][3] = (val >> 8) & 0x3f;
+               }
+               if (pd_gains > 3) {
+-                      chan_pcal_info->pwr_i[3] = (val >> 14) & 0x3;
++                      pcinfo->pwr_i[3] = (val >> 14) & 0x3;
+                       AR5K_EEPROM_READ(offset++, val);
+-                      chan_pcal_info->pwr_i[3] |= ((val >> 0) & 0x7) << 2;
++                      pcinfo->pwr_i[3] |= ((val >> 0) & 0x7) << 2;
+-                      chan_pcal_info->pddac_i[3] = (val >> 3) & 0x7f;
+-                      chan_pcal_info->pwr[3][0] =
+-                                              (val >> 10) & 0xf;
+-                      chan_pcal_info->pddac[3][0] =
+-                                              (val >> 14) & 0x3;
++                      pcinfo->pddac_i[3] = (val >> 3) & 0x7f;
++                      pcinfo->pwr[3][0] = (val >> 10) & 0xf;
++                      pcinfo->pddac[3][0] = (val >> 14) & 0x3;
+                       AR5K_EEPROM_READ(offset++, val);
+-                      chan_pcal_info->pddac[3][0] |=
+-                                              (val & 0xF) << 2;
+-                      chan_pcal_info->pwr[3][1] =
+-                                              (val >> 4) & 0xf;
+-                      chan_pcal_info->pddac[3][1] =
+-                                              (val >> 8) & 0x3f;
++                      pcinfo->pddac[3][0] |= (val & 0xF) << 2;
++                      pcinfo->pwr[3][1] = (val >> 4) & 0xf;
++                      pcinfo->pddac[3][1] = (val >> 8) & 0x3f;
+-                      chan_pcal_info->pwr[3][2] =
+-                                              (val >> 14) & 0x3;
++                      pcinfo->pwr[3][2] = (val >> 14) & 0x3;
+                       AR5K_EEPROM_READ(offset++, val);
+-                      chan_pcal_info->pwr[3][2] |=
+-                                              ((val >> 0) & 0x3) << 2;
++                      pcinfo->pwr[3][2] |= ((val >> 0) & 0x3) << 2;
+-                      chan_pcal_info->pddac[3][2] =
+-                                              (val >> 2) & 0x3f;
+-                      chan_pcal_info->pwr[3][3] =
+-                                              (val >> 8) & 0xf;
++                      pcinfo->pddac[3][2] = (val >> 2) & 0x3f;
++                      pcinfo->pwr[3][3] = (val >> 8) & 0xf;
+-                      chan_pcal_info->pddac[3][3] =
+-                                              (val >> 12) & 0xF;
++                      pcinfo->pddac[3][3] = (val >> 12) & 0xF;
+                       AR5K_EEPROM_READ(offset++, val);
+-                      chan_pcal_info->pddac[3][3] |=
+-                                              ((val >> 0) & 0x3) << 4;
++                      pcinfo->pddac[3][3] |= ((val >> 0) & 0x3) << 4;
+               } else if (pd_gains == 3) {
+-                      chan_pcal_info->pwr[2][3] =
+-                                              (val >> 14) & 0x3;
++                      pcinfo->pwr[2][3] = (val >> 14) & 0x3;
+                       AR5K_EEPROM_READ(offset++, val);
+-                      chan_pcal_info->pwr[2][3] |=
+-                                              ((val >> 0) & 0x3) << 2;
++                      pcinfo->pwr[2][3] |= ((val >> 0) & 0x3) << 2;
+-                      chan_pcal_info->pddac[2][3] =
+-                                              (val >> 2) & 0x3f;
++                      pcinfo->pddac[2][3] = (val >> 2) & 0x3f;
+               }
++      }
++      return 0;
++}
++
++static int
++ath5k_eeprom_convert_pcal_info_2413(struct ath5k_hw *ah, int mode,
++                                    struct ath5k_chan_pcal_info *chinfo,
++                                    unsigned int *xgains)
++{
++      struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom;
++      struct ath5k_chan_pcal_info_rf2413 *pcinfo;
++      unsigned int i, j, k;
+-              for (c = 0; c < pd_gains; c++) {
+-                      /* Recreate pwr table for this channel using pwr steps */
+-                      chan_pcal_info->pwr[c][0] += chan_pcal_info->pwr_i[c] * 2;
+-                      chan_pcal_info->pwr[c][1] += chan_pcal_info->pwr[c][0];
+-                      chan_pcal_info->pwr[c][2] += chan_pcal_info->pwr[c][1];
+-                      chan_pcal_info->pwr[c][3] += chan_pcal_info->pwr[c][2];
+-                      if (chan_pcal_info->pwr[c][3] == chan_pcal_info->pwr[c][2])
+-                              chan_pcal_info->pwr[c][3] = 0;
+-
+-                      /* Recreate pddac table for this channel using pddac steps */
+-                      chan_pcal_info->pddac[c][0] += chan_pcal_info->pddac_i[c];
+-                      chan_pcal_info->pddac[c][1] += chan_pcal_info->pddac[c][0];
+-                      chan_pcal_info->pddac[c][2] += chan_pcal_info->pddac[c][1];
+-                      chan_pcal_info->pddac[c][3] += chan_pcal_info->pddac[c][2];
+-                      if (chan_pcal_info->pddac[c][3] == chan_pcal_info->pddac[c][2])
+-                              chan_pcal_info->pddac[c][3] = 0;
++      /* prepare the raw values */
++      for (i = 0; i < ee->ee_n_piers[mode]; i++) {
++              pcinfo = &chinfo[i].rf2413_info;
++              for (j = 0; j < ee->ee_pd_gains[mode]; j++) {
++                      unsigned int idx = xgains[j];
++                      struct ath5k_pdgain_info *pd = &pcinfo->pdgains[idx];
++
++                      /* one more point for the highest power (lowest gain) */
++                      if (j == ee->ee_pd_gains[mode] - 1) {
++                              pd->n_vpd = AR5K_EEPROM_N_PD_POINTS;
++                      } else {
++                              pd->n_vpd = AR5K_EEPROM_N_PD_POINTS - 1;
++                      }
++
++                      pd->vpd[0] = pcinfo->pddac_i[j];
++                      pd->pwr_t4[0] = 4 * pcinfo->pwr_i[j];
++                      for (k = 1; k < pd->n_vpd; k++) {
++                              pd->pwr_t4[k] = pd->pwr_t4[k - 1] + 2 * pcinfo->pwr[j][k - 1];
++                              pd->vpd[k] = pd->vpd[k - 1] + pcinfo->pddac[j][k - 1];
++                      }
+               }
+       }
+       return 0;
+ }
++static int
++ath5k_eeprom_read_pcal_info_2413(struct ath5k_hw *ah, int mode)
++{
++      struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom;
++      struct ath5k_chan_pcal_info *chinfo;
++      unsigned int xgains[AR5K_EEPROM_N_PD_GAINS];
++      u32 offset;
++      u8 pd_gains = 0;
++      int i, ret;
++
++      memset(xgains, 0, sizeof(xgains));
++      for (i = 0; i < AR5K_EEPROM_N_PD_GAINS; i++) {
++              int idx = AR5K_EEPROM_N_PD_GAINS - i - 1;
++
++              if ((ee->ee_x_gain[mode] >> idx) & 0x1)
++                      xgains[pd_gains++] = idx;
++      }
++      ee->ee_pd_gains[mode] = pd_gains;
++
++      offset = ath5k_cal_data_offset_2413(ee, mode);
++      switch (mode) {
++      case AR5K_EEPROM_MODE_11A:
++              if (!AR5K_EEPROM_HDR_11A(ee->ee_header))
++                      return 0;
++
++              ath5k_eeprom_init_11a_pcal_freq(ah, offset);
++              offset += AR5K_EEPROM_N_5GHZ_CHAN / 2;
++              chinfo = ee->ee_pwr_cal_a;
++              break;
++      case AR5K_EEPROM_MODE_11B:
++              if (!AR5K_EEPROM_HDR_11B(ee->ee_header))
++                      return 0;
++
++              ath5k_eeprom_init_11bg_2413(ah, mode, offset);
++              offset += AR5K_EEPROM_N_2GHZ_CHAN_2413 / 2;
++              chinfo = ee->ee_pwr_cal_b;
++              break;
++      case AR5K_EEPROM_MODE_11G:
++              if (!AR5K_EEPROM_HDR_11G(ee->ee_header))
++                      return 0;
++
++              ath5k_eeprom_init_11bg_2413(ah, mode, offset);
++              offset += AR5K_EEPROM_N_2GHZ_CHAN_2413 / 2;
++              chinfo = ee->ee_pwr_cal_g;
++              break;
++      default:
++              return -EINVAL;
++      }
++
++
++      ret = ath5k_eeprom_parse_pcal_info_2413(ah, mode, offset, chinfo);
++      if (ret)
++              return ret;
++
++      ret = ath5k_eeprom_convert_pcal_info_2413(ah, mode, chinfo, xgains);
++      if (ret)
++              return ret;
++
++      return 0;
++}
++
+ /*
+  * Read per rate target power (this is the maximum tx power
+  * supported by the card). This info is used when setting
+@@ -1264,6 +1271,7 @@ ath5k_eeprom_read_pcal_info(struct ath5k
+       else
+               read_pcal = ath5k_eeprom_read_pcal_info_5111;
++
+       for (mode = AR5K_EEPROM_MODE_11A; mode <= AR5K_EEPROM_MODE_11G; mode++) {
+               err = read_pcal(ah, mode);
+               if (err)
+--- a/drivers/net/wireless/ath5k/eeprom.h
++++ b/drivers/net/wireless/ath5k/eeprom.h
+@@ -265,15 +265,27 @@ struct ath5k_chan_pcal_info_rf5112 {
+       u8      pcdac_x3[AR5K_EEPROM_N_XPD3_POINTS];
+ };
++
++struct ath5k_pdgain_info {
++      u16 n_vpd;
++      u16 vpd[AR5K_EEPROM_N_PD_POINTS];
++      s16 pwr_t4[AR5K_EEPROM_N_PD_POINTS];
++};
++
+ struct ath5k_chan_pcal_info_rf2413 {
++      /* --- EEPROM VALUES --- */
+       /* Starting pwr/pddac values */
+-      s8              pwr_i[AR5K_EEPROM_N_PD_GAINS];
+-      u8      pddac_i[AR5K_EEPROM_N_PD_GAINS];
++      s8 pwr_i[AR5K_EEPROM_N_PD_GAINS];
++      u8 pddac_i[AR5K_EEPROM_N_PD_GAINS];
+       /* (pwr,pddac) points */
+-      s8              pwr[AR5K_EEPROM_N_PD_GAINS]
+-                              [AR5K_EEPROM_N_PD_POINTS];
+-      u8      pddac[AR5K_EEPROM_N_PD_GAINS]
+-                              [AR5K_EEPROM_N_PD_POINTS];
++      s8 pwr[AR5K_EEPROM_N_PD_GAINS]
++            [AR5K_EEPROM_N_PD_POINTS];
++      u8 pddac[AR5K_EEPROM_N_PD_GAINS]
++              [AR5K_EEPROM_N_PD_POINTS];
++
++      /* --- RAW VALUES --- */
++      struct ath5k_pdgain_info pdgains
++              [AR5K_EEPROM_N_PD_GAINS];
+ };
+ struct ath5k_chan_pcal_info {
diff --git a/package/mac80211/patches/340-ath5k_txpower_2413.patch b/package/mac80211/patches/340-ath5k_txpower_2413.patch
new file mode 100644 (file)
index 0000000..7373d35
--- /dev/null
@@ -0,0 +1,672 @@
+Implement the power curve interpolation, which is required for
+proper tx on 2413 and newer RF designs.
+
+Signed-off-by: Felix Fietkau <nbd@openwrt.org>
+
+--- a/drivers/net/wireless/ath5k/phy.c
++++ b/drivers/net/wireless/ath5k/phy.c
+@@ -4,6 +4,7 @@
+  * Copyright (c) 2004-2007 Reyk Floeter <reyk@openbsd.org>
+  * Copyright (c) 2006-2007 Nick Kossifidis <mickflemm@gmail.com>
+  * Copyright (c) 2007-2008 Jiri Slaby <jirislaby@gmail.com>
++ * Copyright (c) 2008-2009 Felix Fietkau <nbd@openwrt.org>
+  *
+  * Permission to use, copy, modify, and distribute this software for any
+  * purpose with or without fee is hereby granted, provided that the above
+@@ -2383,31 +2384,449 @@ unsigned int ath5k_hw_get_def_antenna(st
+  */
+ /*
+- * Initialize the tx power table (not fully implemented)
++ * find the lower and upper index of the values in the table surrounding the target value
+  */
+-static void ath5k_txpower_table(struct ath5k_hw *ah,
+-              struct ieee80211_channel *channel, s16 max_power)
++static void
++ath5k_get_table_index(const u16 *tbl, unsigned int tbl_sz, u16 target,
++                      unsigned int idx[2])
+ {
+-      unsigned int i, min, max, n;
+-      u16 txpower, *rates;
++      const u16 *ti;
+-      rates = ah->ah_txpower.txp_rates;
++      if (target < tbl[0]) {
++              idx[0] = idx[1] = 0;
++              return;
++      }
++
++      if (target > tbl[tbl_sz - 1]) {
++              idx[0] = idx[1] = tbl_sz - 1;
++              return;
++      }
++
++      /* look for the surrounding values */
++      for (ti = tbl; ti < &tbl[tbl_sz - 1]; ti++) {
++
++              /* if the value is equal to the target, set lo = hi = index */
++              if (*ti == target) {
++                      idx[0] = idx[1] = ti - tbl;
++                      return;
++              }
++
++              /* if the target is between the current value and the next one,
++               * set lo = cur, hi = lo + 1 */
++              if (target < ti[1]) {
++                      idx[0] = ti - tbl;
++                      idx[1] = idx[0] + 1;
++                      return;
++              }
++      }
++}
++
++/* find the lower and upper frequency info */
++static void
++ath5k_get_freq_tables(struct ath5k_hw *ah, struct ieee80211_channel *channel,
++                     struct ath5k_chan_pcal_info **pcinfo_l,
++                     struct ath5k_chan_pcal_info **pcinfo_r,
++                     struct ath5k_rate_pcal_info *rates)
++{
++      struct ath5k_eeprom_info *ee = &ah->ah_capabilities.cap_eeprom;
++      struct ath5k_chan_pcal_info *pcinfo;
++      unsigned int idx_l, idx_r;
++      int mode, max, i;
++      unsigned int target = channel->center_freq;
++      struct ath5k_rate_pcal_info *rpinfo;
++
++      if (!(channel->hw_value & CHANNEL_OFDM)) {
++              pcinfo = ee->ee_pwr_cal_b;
++              rpinfo = ee->ee_rate_tpwr_b;
++              mode = AR5K_EEPROM_MODE_11B;
++      } else if (channel->hw_value & CHANNEL_2GHZ) {
++              pcinfo = ee->ee_pwr_cal_g;
++              rpinfo = ee->ee_rate_tpwr_g;
++              mode = AR5K_EEPROM_MODE_11G;
++      } else {
++              pcinfo = ee->ee_pwr_cal_a;
++              rpinfo = ee->ee_rate_tpwr_a;
++              mode = AR5K_EEPROM_MODE_11A;
++      }
++      max = ee->ee_n_piers[mode] - 1;
++
++      if (target < pcinfo[0].freq) {
++              idx_l = idx_r = 0;
++              goto done;
++      }
++
++      if (target > pcinfo[max].freq) {
++              idx_l = idx_r = max;
++              goto done;
++      }
++
++      /* look for the surrounding values */
++      for (i = 0; i <= max; i++) {
++
++              /* if the value is equal to the target, set lo = hi = index */
++              if (pcinfo[i].freq == target) {
++                      idx_l = idx_r = i;
++                      goto done;
++              }
++
++              /* if the target is between the current value and the next one,
++               * set lo = cur, hi = lo + 1 */
++              if (target < pcinfo[i].freq) {
++                      idx_l = i;
++                      idx_r = idx_l + 1;
++                      goto done;
++              }
++      }
++
++done:
++      *pcinfo_l = &pcinfo[idx_l];
++      *pcinfo_r = &pcinfo[idx_r];
++
++      if (!rates)
++              return;
++
++      /* rate info minimum values */
++      rates->freq = channel->center_freq;
++      rates->target_power_6to24 =
++              min(rpinfo[idx_l].target_power_6to24,
++                  rpinfo[idx_r].target_power_6to24);
++      rates->target_power_36 =
++              min(rpinfo[idx_l].target_power_36,
++                  rpinfo[idx_r].target_power_36);
++      rates->target_power_48 =
++              min(rpinfo[idx_l].target_power_48,
++                  rpinfo[idx_r].target_power_48);
++      rates->target_power_54 =
++              min(rpinfo[idx_l].target_power_54,
++                  rpinfo[idx_r].target_power_54);
++}
++
++
++/* Fill the VPD table for all indices between pmin and pmax */
++static void
++ath5k_fill_vpdtable(s16 pmin, s16 pmax, const s16 *pwr,
++                    const u16 *vpd, unsigned int intercepts,
++                    u16 vpdtable[AR5K_EEPROM_POWER_TABLE_SIZE])
++{
++      unsigned int idx[2] = { 0, 0 };
++      s16 cur_pwr = 2 * pmin;
++      int i;
++
++      if (intercepts < 2)
++              return;
++
++      for(i = 0; i <= (pmax - pmin); i++) {
++              ath5k_get_table_index(pwr, intercepts, cur_pwr, idx);
++
++              if (!idx[1])
++                      idx[1] = 1;
++
++              if (idx[0] == intercepts - 1)
++                      idx[0] = intercepts - 2;
++
++              if (pwr[idx[0]] == pwr[idx[1]])
++                      vpdtable[i] = vpd[idx[0]];
++              else
++                      vpdtable[i] = (((cur_pwr - pwr[idx[0]]) * vpd[idx[1]] +
++                                      (pwr[idx[1]] - cur_pwr) * vpd[idx[0]]) /
++                                         (pwr[idx[1]] - pwr[idx[0]]));
++
++              cur_pwr += 2;
++      }
++}
++
++static inline s16
++ath5k_interpolate_signed(u16 ref, u16 ref_l, u16 ref_r, s16 val_l, s16 val_r)
++{
++      if (ref_l == ref_r)
++              return val_l;
++
++      return ((ref - ref_l)*val_r + (ref_r - ref)*val_l) / (ref_r - ref_l);
++}
++
++static inline s16
++ath5k_get_min_power_2413(struct ath5k_chan_pcal_info *pcinfo)
++{
++      struct ath5k_pdgain_info *pd;
++      int i;
++
++      /* backwards - highest pdgain == lowest power */
++      for (i = AR5K_EEPROM_N_PD_GAINS - 1; i >= 0; i--) {
++              pd = &pcinfo->rf2413_info.pdgains[i];
++              if (!pd->n_vpd)
++                      continue;
++
++              return pd->pwr_t4[0];
++      }
++      return 0;
++}
++
++static inline s16
++ath5k_get_max_power_2413(struct ath5k_chan_pcal_info *pcinfo)
++{
++      struct ath5k_pdgain_info *pd;
++      int i;
++
++      /* forwards: lowest pdgain == highest power */
++      for (i = 0; i < AR5K_EEPROM_N_PD_GAINS; i++) {
++              pd = &pcinfo->rf2413_info.pdgains[i];
++              if (!pd->n_vpd)
++                      continue;
++
++              return pd->pwr_t4[pd->n_vpd];
++      }
++      return 0;
++}
++
++
++
++static int
++ath5k_txpower_table_2413(struct ath5k_hw *ah, struct ieee80211_channel *ch,
++                         struct ath5k_chan_pcal_info *pcinfo_l,
++                         struct ath5k_chan_pcal_info *pcinfo_r)
++{
++      struct ath5k_pdgain_info *pd_l, *pd_r;
++      u16 gain_boundaries[4];
++      u16 *xpd = ah->ah_txpower.txp_xpd;
++      int n_xpd = 0;
++      s16 pmin_t2[AR5K_EEPROM_N_PD_GAINS];
++      s16 pmax_t2[AR5K_EEPROM_N_PD_GAINS];
++      u16 *pdadc_out = ah->ah_txpower.txp_pcdac;
++      unsigned int gain_overlap;
++      unsigned int vpd_size, target_idx, max_idx;
++      unsigned int n_pdadc = 0;
++      u16 vpd_step;
++      u16 *pcdacL;
++      u16 *pcdacR;
++      int i, j, s;
++      u32 reg;
++      s16 ch_pmin, ch_pmax;
++
++      gain_overlap = ath5k_hw_reg_read(ah, AR5K_PHY_TPC_RG5) &
++              AR5K_PHY_TPC_RG5_PD_GAIN_OVERLAP;
++
++      /* loop backwards over pdgains (highest pdgain == lowest power) */
++      for (i = AR5K_EEPROM_N_PD_GAINS - 1; i >= 0; i--) {
++              pd_l = &pcinfo_l->rf2413_info.pdgains[i];
++              pd_r = &pcinfo_r->rf2413_info.pdgains[i];
++              pcdacL = ah->ah_txpower.txp_rfdata.rf2413.pcdacL[n_xpd];
++              pcdacR = ah->ah_txpower.txp_rfdata.rf2413.pcdacR[n_xpd];
++
++              if (!pd_l->n_vpd)
++                      continue;
++
++              xpd[n_xpd] = i;
++
++              pmin_t2[n_xpd] = min(pd_l->pwr_t4[0], pd_r->pwr_t4[0]) / 2;
++              pmax_t2[n_xpd] = min(pd_l->pwr_t4[pd_l->n_vpd - 1],
++                      pd_r->pwr_t4[pd_r->n_vpd - 1]) / 2;
++
++              if ((u16) (pmax_t2[n_xpd] - pmin_t2[n_xpd]) > 64)
++                      continue;
++
++              /* fill vpd tables for left and right frequency info */
++              ath5k_fill_vpdtable(pmin_t2[n_xpd], pmax_t2[n_xpd],
++                      pd_l->pwr_t4, pd_l->vpd, pd_l->n_vpd, pcdacL);
++
++              /* check if interpolation is necessary */
++              if (pcinfo_l == pcinfo_r)
++                      continue;
++
++              ath5k_fill_vpdtable(pmin_t2[n_xpd], pmax_t2[n_xpd],
++                      pd_r->pwr_t4, pd_r->vpd, pd_r->n_vpd, pcdacR);
++
++              /* interpolate pcdac values,
++               * reuse pcdacL table for interpolation output */
++              for (j = 0; j < (u16) (pmax_t2[n_xpd] - pmin_t2[n_xpd]); j++) {
++                      pcdacL[j] = ath5k_interpolate_signed(ch->center_freq,
++                                      pcinfo_l->freq, pcinfo_r->freq,
++                                      (s16) pcdacL[j], (s16) pcdacR[j]);
++              }
++              n_xpd++;
++      }
++
++      if (!n_xpd)
++              return 0;
++
++      /* create final table */
++      for (i = 0, n_pdadc = 0; i < n_xpd; i++) {
++              pcdacL = ah->ah_txpower.txp_rfdata.rf2413.pcdacL[i];
++
++              if (i == n_xpd - 1) {
++                      /* 2 db boundary stretch */
++                      gain_boundaries[i] = pmax_t2[i] + 4;
++              } else {
++                      gain_boundaries[i] = (pmax_t2[i] + pmin_t2[i + 1]) / 2;
++              }
++
++              if (gain_boundaries[i] > AR5K_TUNE_MAX_TXPOWER)
++                      gain_boundaries[i] = AR5K_TUNE_MAX_TXPOWER;
++
++              /* find starting index */
++              if (i == 0)
++                      s = 0;
++              else
++                      s = (gain_boundaries[i - 1] - pmin_t2[i]) -
++                              gain_overlap;
++
++              if (pcdacL[1] > pcdacL[0])
++                      vpd_step = pcdacL[1] - pcdacL[0];
++              else
++                      vpd_step = 1;
++
++              /* if s is below 0, we need to extrapolate below this pdgain */
++              while ((s < 0) && (n_pdadc < 128)) {
++                      s16 tmp = pcdacL[0] + s * vpd_step;
++                      pdadc_out[n_pdadc++] = (u16) ((tmp < 0) ? 0 : tmp);
++                      s++;
++              }
++
++              vpd_size = pmax_t2[i] - pmin_t2[i];
++              target_idx = gain_boundaries[i] + gain_overlap - pmin_t2[i];
++              max_idx = (target_idx < vpd_size) ? target_idx : vpd_size;
++
++              while ((s < (s16) max_idx) && (n_pdadc < 128))
++                      pdadc_out[n_pdadc++] = pcdacL[s++];
++
++              /* need to extrapolate above this pdgain? */
++              if (target_idx <= max_idx)
++                      continue;
++
++              if (pcdacL[vpd_size - 1] > pcdacL[vpd_size - 2])
++                      vpd_step = pcdacL[vpd_size - 1] - pcdacL[vpd_size - 2];
++              else
++                      vpd_step = 1;
++
++              while ((s < (s16) target_idx) && (n_pdadc < 128)) {
++                      int tmp = pcdacL[vpd_size - 1] +
++                              (s - max_idx) * vpd_step;
++                      pdadc_out[n_pdadc++] = (tmp > 127) ? 127 : tmp;
++                      s++;
++              }
++      }
++
++      while (i < AR5K_EEPROM_N_PD_GAINS) {
++              gain_boundaries[i] = gain_boundaries[i - 1];
++              i++;
++      }
++
++      while (n_pdadc < 128) {
++              pdadc_out[n_pdadc] = pdadc_out[n_pdadc - 1];
++              n_pdadc++;
++      }
++
++      /* select the right xpdgain curves */
++      reg = ath5k_hw_reg_read(ah, AR5K_PHY_TPC_RG1);
++      reg &= ~(AR5K_PHY_TPC_RG1_PDGAIN_1 |
++               AR5K_PHY_TPC_RG1_PDGAIN_2 |
++               AR5K_PHY_TPC_RG1_PDGAIN_3 |
++               AR5K_PHY_TPC_RG1_NUM_PD_GAIN);
++      reg |= AR5K_REG_SM(n_xpd, AR5K_PHY_TPC_RG1_NUM_PD_GAIN);
++      switch(n_xpd) {
++      case 3:
++              reg |= AR5K_REG_SM(xpd[2], AR5K_PHY_TPC_RG1_PDGAIN_3);
++              /* fall through */
++      case 2:
++              reg |= AR5K_REG_SM(xpd[1], AR5K_PHY_TPC_RG1_PDGAIN_2);
++              /* fall through */
++      case 1:
++              reg |= AR5K_REG_SM(xpd[0], AR5K_PHY_TPC_RG1_PDGAIN_1);
++              break;
++      }
++      ath5k_hw_reg_write(ah, reg, AR5K_PHY_TPC_RG1);
+-      txpower = AR5K_TUNE_DEFAULT_TXPOWER * 2;
+-      if (max_power > txpower)
+-              txpower = max_power > AR5K_TUNE_MAX_TXPOWER ?
+-                  AR5K_TUNE_MAX_TXPOWER : max_power;
++      /*
++       * Write TX power values
++       */
++      reg = AR5K_PHY_PCDAC_TXPOWER_BASE_2413;
++      for (i = 0; i < (AR5K_EEPROM_POWER_TABLE_SIZE / 2); i++) {
++              ath5k_hw_reg_write(ah,
++                      ((pdadc_out[4*i + 0] & 0xff) << 0) |
++                      ((pdadc_out[4*i + 1] & 0xff) << 8) |
++                      ((pdadc_out[4*i + 2] & 0xff) << 16) |
++                      ((pdadc_out[4*i + 3] & 0xff) << 24), reg);
++              reg += 4;
++      }
++
++      ath5k_hw_reg_write(ah,
++              AR5K_REG_SM(gain_overlap,
++                      AR5K_PHY_TPC_RG5_PD_GAIN_OVERLAP) |
++              AR5K_REG_SM(gain_boundaries[0],
++                      AR5K_PHY_TPC_RG5_PD_GAIN_BOUNDARY_1) |
++              AR5K_REG_SM(gain_boundaries[1],
++                      AR5K_PHY_TPC_RG5_PD_GAIN_BOUNDARY_2) |
++              AR5K_REG_SM(gain_boundaries[2],
++                      AR5K_PHY_TPC_RG5_PD_GAIN_BOUNDARY_3) |
++              AR5K_REG_SM(gain_boundaries[3],
++                      AR5K_PHY_TPC_RG5_PD_GAIN_BOUNDARY_4),
++              AR5K_PHY_TPC_RG5);
++
++      ah->ah_txpower.txp_offset = pmin_t2[0];
++
++      /* look up power boundaries for this channel */
++      ch_pmin = ath5k_get_min_power_2413(pcinfo_l);
++      ch_pmax = ath5k_get_max_power_2413(pcinfo_l);
++
++      if (pcinfo_l != pcinfo_r) {
++              s16 pwr_r;
++
++              pwr_r = ath5k_get_min_power_2413(pcinfo_r);
++              ch_pmin = ath5k_interpolate_signed(ch->center_freq,
++                                      pcinfo_l->freq, pcinfo_r->freq,
++                                      ch_pmin, pwr_r);
++
++              pwr_r = ath5k_get_max_power_2413(pcinfo_r);
++              ch_pmax = ath5k_interpolate_signed(ch->center_freq,
++                                      pcinfo_l->freq, pcinfo_r->freq,
++                                      ch_pmax, pwr_r);
++      }
++      ah->ah_txpower.txp_min = ch_pmin;
++      ah->ah_txpower.txp_max = ch_pmax;
+-      for (i = 0; i < AR5K_MAX_RATES; i++)
+-              rates[i] = txpower;
++      return 0;
++}
+-      /* XXX setup target powers by rate */
++static void
++ath5k_setup_rate_table(struct ath5k_hw *ah, u16 max_pwr,
++                       struct ath5k_rate_pcal_info *rate_info)
++{
++      unsigned int i;
++      u16 *rates;
++
++      max_pwr *= 2;
++      max_pwr = min(max_pwr, (u16) ah->ah_txpower.txp_max);
++      /* apply rate limits */
++      rates = ah->ah_txpower.txp_rates;
++      for (i = 0; i < 5; i++) {
++              rates[i] = min(max_pwr, rate_info->target_power_6to24);
++      }
++      rates[5] = min(rates[0], rate_info->target_power_36);
++      rates[6] = min(rates[0], rate_info->target_power_48);
++      rates[7] = min(rates[0], rate_info->target_power_54);
++      rates[8] = min(rates[0], rate_info->target_power_6to24);
++      rates[9] = min(rates[0], rate_info->target_power_36);
++      rates[10] = min(rates[0], rate_info->target_power_36);
++      rates[11] = min(rates[0], rate_info->target_power_48);
++      rates[12] = min(rates[0], rate_info->target_power_48);
++      rates[13] = min(rates[0], rate_info->target_power_54);
++      rates[14] = min(rates[0], rate_info->target_power_54);
++
++      ah->ah_txpower.txp_tpc = max_pwr;
+       ah->ah_txpower.txp_min = rates[7];
+-      ah->ah_txpower.txp_max = rates[0];
+-      ah->ah_txpower.txp_ofdm = rates[0];
++      ah->ah_txpower.txp_max = min(ah->ah_txpower.txp_max,
++              (s16) rate_info->target_power_36);
++      ah->ah_txpower.txp_ofdm = ah->ah_txpower.txp_max;
++}
++
++static int
++ath5k_txpower_table(struct ath5k_hw *ah, struct ieee80211_channel *ch,
++                    struct ath5k_chan_pcal_info *pcinfo_l,
++                    struct ath5k_chan_pcal_info *pcinfo_r,
++                                      u16 max_pwr)
++{
++      unsigned int i, min, max, n;
+-      /* Calculate the power table */
+       n = ARRAY_SIZE(ah->ah_txpower.txp_pcdac);
+       min = AR5K_EEPROM_PCDAC_START;
+       max = AR5K_EEPROM_PCDAC_STOP;
+@@ -2418,51 +2837,64 @@ static void ath5k_txpower_table(struct a
+ #else
+               min;
+ #endif
++
++      /*
++       * Write TX power values
++       */
++      for (i = 0; i < (AR5K_EEPROM_POWER_TABLE_SIZE / 2); i++) {
++              ath5k_hw_reg_write(ah,
++                      ((((ah->ah_txpower.txp_pcdac[(i << 1) + 1] << 8) |
++                              0xff) & 0xffff) << 16) |
++                       (((ah->ah_txpower.txp_pcdac[(i << 1)    ] << 8) |
++                              0xff) & 0xffff),
++                      AR5K_PHY_PCDAC_TXPOWER(i));
++      }
++      return 0;
+ }
++
+ /*
+  * Set transmition power
+  */
+-int /*O.K. - txpower_table is unimplemented so this doesn't work*/
++int
+ ath5k_hw_txpower(struct ath5k_hw *ah, struct ieee80211_channel *channel,
+               unsigned int txpower)
+ {
++      struct ath5k_chan_pcal_info *pcinfo_l, *pcinfo_r;
++      struct ath5k_rate_pcal_info rate_info;
+       bool tpc = ah->ah_txpower.txp_tpc;
+-      unsigned int i;
+       ATH5K_TRACE(ah->ah_sc);
+       if (txpower > AR5K_TUNE_MAX_TXPOWER) {
+               ATH5K_ERR(ah->ah_sc, "invalid tx power: %u\n", txpower);
+               return -EINVAL;
+       }
+-
+-      /*
+-       * RF2413 for some reason can't
+-       * transmit anything if we call
+-       * this funtion, so we skip it
+-       * until we fix txpower.
+-       *
+-       * XXX: Assume same for RF2425
+-       * to be safe.
+-       */
+-      if ((ah->ah_radio == AR5K_RF2413) || (ah->ah_radio == AR5K_RF2425))
+-              return 0;
++      if (txpower == 0)
++              txpower = AR5K_TUNE_MAX_TXPOWER;
+       /* Reset TX power values */
+       memset(&ah->ah_txpower, 0, sizeof(ah->ah_txpower));
+       ah->ah_txpower.txp_tpc = tpc;
++      ah->ah_txpower.txp_min = 0;
++      ah->ah_txpower.txp_max = AR5K_TUNE_MAX_TXPOWER;
+-      /* Initialize TX power table */
+-      ath5k_txpower_table(ah, channel, txpower);
++      /* find matching frequency info */
++      ath5k_get_freq_tables(ah, channel, &pcinfo_l, &pcinfo_r, &rate_info);
++      ath5k_setup_rate_table(ah, txpower, &rate_info);
+-      /*
+-       * Write TX power values
+-       */
+-      for (i = 0; i < (AR5K_EEPROM_POWER_TABLE_SIZE / 2); i++) {
+-              ath5k_hw_reg_write(ah,
+-                      ((((ah->ah_txpower.txp_pcdac[(i << 1) + 1] << 8) | 0xff) & 0xffff) << 16) |
+-                      (((ah->ah_txpower.txp_pcdac[(i << 1)    ] << 8) | 0xff) & 0xffff),
+-                      AR5K_PHY_PCDAC_TXPOWER(i));
++      /* Initialize TX power table */
++      switch(ah->ah_radio) {
++      case AR5K_RF2413:
++      case AR5K_RF5413:
++              ath5k_txpower_table_2413(ah, channel, pcinfo_l, pcinfo_r);
++              break;
++      case AR5K_RF2425:
++              /* unimplemented */
++              return 0;
++      default:
++              /* Default power table */
++              ath5k_txpower_table(ah, channel, pcinfo_l, pcinfo_r, txpower);
++              break;
+       }
+       ath5k_hw_reg_write(ah, AR5K_TXPOWER_OFDM(3, 24) |
+@@ -2481,12 +2913,19 @@ ath5k_hw_txpower(struct ath5k_hw *ah, st
+               AR5K_TXPOWER_CCK(13, 16) | AR5K_TXPOWER_CCK(12, 8) |
+               AR5K_TXPOWER_CCK(11, 0), AR5K_PHY_TXPOWER_RATE4);
+-      if (ah->ah_txpower.txp_tpc)
++      if (ah->ah_txpower.txp_tpc) {
+               ath5k_hw_reg_write(ah, AR5K_PHY_TXPOWER_RATE_MAX_TPC_ENABLE |
+                       AR5K_TUNE_MAX_TXPOWER, AR5K_PHY_TXPOWER_RATE_MAX);
+-      else
++
++              ath5k_hw_reg_write(ah,
++                      AR5K_REG_MS(AR5K_TUNE_MAX_TXPOWER, AR5K_TPC_ACK) |
++                      AR5K_REG_MS(AR5K_TUNE_MAX_TXPOWER, AR5K_TPC_CTS) |
++                      AR5K_REG_MS(AR5K_TUNE_MAX_TXPOWER, AR5K_TPC_CHIRP),
++                      AR5K_TPC);
++      } else {
+               ath5k_hw_reg_write(ah, AR5K_PHY_TXPOWER_RATE_MAX |
+                       AR5K_TUNE_MAX_TXPOWER, AR5K_PHY_TXPOWER_RATE_MAX);
++      }
+       return 0;
+ }
+--- a/drivers/net/wireless/ath5k/ath5k.h
++++ b/drivers/net/wireless/ath5k/ath5k.h
+@@ -207,7 +207,7 @@
+ #define AR5K_TUNE_CWMAX_11B                   1023
+ #define AR5K_TUNE_CWMAX_XR                    7
+ #define AR5K_TUNE_NOISE_FLOOR                 -72
+-#define AR5K_TUNE_MAX_TXPOWER                 60
++#define AR5K_TUNE_MAX_TXPOWER                 63
+ #define AR5K_TUNE_DEFAULT_TXPOWER             30
+ #define AR5K_TUNE_TPC_TXPOWER                 true
+ #define AR5K_TUNE_ANT_DIVERSITY                       true
+@@ -1115,11 +1115,23 @@ struct ath5k_hw {
+       struct ath5k_gain       ah_gain;
+       u32                     ah_offset[AR5K_MAX_RF_BANKS];
++
+       struct {
+-              u16             txp_pcdac[AR5K_EEPROM_POWER_TABLE_SIZE];
++              union {
++                      struct {
++                              /* Temporary PCDAC tables for interpolation */
++                              u16 pcdacL[AR5K_EEPROM_N_PD_GAINS]
++                                      [AR5K_EEPROM_POWER_TABLE_SIZE];
++                              u16 pcdacR[AR5K_EEPROM_N_PD_GAINS]
++                                      [AR5K_EEPROM_POWER_TABLE_SIZE];
++                      } rf2413;
++              } txp_rfdata;
++              u16             txp_xpd[AR5K_EEPROM_N_XPD_PER_CHANNEL];
++              u16             txp_pcdac[AR5K_EEPROM_POWER_TABLE_SIZE * 2];
+               u16             txp_rates[AR5K_MAX_RATES];
+               s16             txp_min;
+               s16             txp_max;
++              s16             txp_offset;
+               bool            txp_tpc;
+               s16             txp_ofdm;
+       } ah_txpower;
+--- a/drivers/net/wireless/ath5k/reg.h
++++ b/drivers/net/wireless/ath5k/reg.h
+@@ -1549,6 +1549,15 @@
+ /*===5212 Specific PCU registers===*/
++#define AR5K_TPC                      0x80e8
++#define AR5K_TPC_ACK                  0x0000003f      /* ack frames */
++#define AR5K_TPC_ACK_S                        0
++#define AR5K_TPC_CTS                  0x00003f00      /* cts frames */
++#define AR5K_TPC_CTS_S                        8
++#define AR5K_TPC_CHIRP                        0x003f0000      /* chirp frames */
++#define AR5K_TPC_CHIRP_S              16
++#define AR5K_TPC_DOPPLER              0x0f000000      /* doppler chirp span */
++#define AR5K_TPC_DOPPLER_S            24
+ /*
+  * XR (eXtended Range) mode register
+@@ -2578,6 +2587,12 @@
+ #define       AR5K_PHY_TPC_RG1                0xa258
+ #define       AR5K_PHY_TPC_RG1_NUM_PD_GAIN    0x0000c000
+ #define       AR5K_PHY_TPC_RG1_NUM_PD_GAIN_S  14
++#define AR5K_PHY_TPC_RG1_PDGAIN_1     0x00030000
++#define AR5K_PHY_TPC_RG1_PDGAIN_1_S   16
++#define AR5K_PHY_TPC_RG1_PDGAIN_2     0x000c0000
++#define AR5K_PHY_TPC_RG1_PDGAIN_2_S   18
++#define AR5K_PHY_TPC_RG1_PDGAIN_3     0x00300000
++#define AR5K_PHY_TPC_RG1_PDGAIN_3_S   20
+ #define       AR5K_PHY_TPC_RG5                        0xa26C
+ #define       AR5K_PHY_TPC_RG5_PD_GAIN_OVERLAP        0x0000000F
+--- a/drivers/net/wireless/ath5k/desc.c
++++ b/drivers/net/wireless/ath5k/desc.c
+@@ -194,6 +194,10 @@ static int ath5k_hw_setup_4word_tx_desc(
+               return -EINVAL;
+       }
++      tx_power += ah->ah_txpower.txp_offset;
++      if (tx_power > AR5K_TUNE_MAX_TXPOWER)
++              tx_power = AR5K_TUNE_MAX_TXPOWER;
++
+       /* Clear descriptor */
+       memset(&desc->ud.ds_tx5212, 0, sizeof(struct ath5k_hw_5212_tx_desc));
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