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-rw-r--r--drivers/net/wireless/b43/Makefile1
-rw-r--r--drivers/net/wireless/b43/b43.h7
-rw-r--r--drivers/net/wireless/b43/ppr.c199
-rw-r--r--drivers/net/wireless/b43/ppr.h45
4 files changed, 252 insertions, 0 deletions
diff --git a/drivers/net/wireless/b43/Makefile b/drivers/net/wireless/b43/Makefile
index 6e00b8804ada..9f7965aae93d 100644
--- a/drivers/net/wireless/b43/Makefile
+++ b/drivers/net/wireless/b43/Makefile
@@ -18,6 +18,7 @@ b43-y += xmit.o
b43-y += dma.o
b43-y += pio.o
b43-y += rfkill.o
+b43-y += ppr.o
b43-$(CONFIG_B43_LEDS) += leds.o
b43-$(CONFIG_B43_PCMCIA) += pcmcia.o
b43-$(CONFIG_B43_SDIO) += sdio.o
diff --git a/drivers/net/wireless/b43/b43.h b/drivers/net/wireless/b43/b43.h
index 9b2d0c9bfb8e..d17cea05a9c1 100644
--- a/drivers/net/wireless/b43/b43.h
+++ b/drivers/net/wireless/b43/b43.h
@@ -791,6 +791,13 @@ struct b43_firmware {
bool pcm_request_failed;
};
+enum b43_band {
+ B43_BAND_2G = 0,
+ B43_BAND_5G_LO = 1,
+ B43_BAND_5G_MI = 2,
+ B43_BAND_5G_HI = 3,
+};
+
/* Device (802.11 core) initialization status. */
enum {
B43_STAT_UNINIT = 0, /* Uninitialized. */
diff --git a/drivers/net/wireless/b43/ppr.c b/drivers/net/wireless/b43/ppr.c
new file mode 100644
index 000000000000..9a770279c415
--- /dev/null
+++ b/drivers/net/wireless/b43/ppr.c
@@ -0,0 +1,199 @@
+/*
+ * Broadcom B43 wireless driver
+ * PPR (Power Per Rate) management
+ *
+ * Copyright (c) 2014 Rafał Miłecki <zajec5@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include "ppr.h"
+#include "b43.h"
+
+#define ppr_for_each_entry(ppr, i, entry) \
+ for (i = 0, entry = &(ppr)->__all_rates[i]; \
+ i < B43_PPR_RATES_NUM; \
+ i++, entry++)
+
+void b43_ppr_clear(struct b43_wldev *dev, struct b43_ppr *ppr)
+{
+ memset(ppr, 0, sizeof(*ppr));
+
+ /* Compile-time PPR check */
+ BUILD_BUG_ON(sizeof(struct b43_ppr) != B43_PPR_RATES_NUM * sizeof(u8));
+}
+
+void b43_ppr_add(struct b43_wldev *dev, struct b43_ppr *ppr, int diff)
+{
+ int i;
+ u8 *rate;
+
+ ppr_for_each_entry(ppr, i, rate) {
+ *rate = clamp_val(*rate + diff, 0, 127);
+ }
+}
+
+void b43_ppr_apply_max(struct b43_wldev *dev, struct b43_ppr *ppr, u8 max)
+{
+ int i;
+ u8 *rate;
+
+ ppr_for_each_entry(ppr, i, rate) {
+ *rate = min(*rate, max);
+ }
+}
+
+void b43_ppr_apply_min(struct b43_wldev *dev, struct b43_ppr *ppr, u8 min)
+{
+ int i;
+ u8 *rate;
+
+ ppr_for_each_entry(ppr, i, rate) {
+ *rate = max(*rate, min);
+ }
+}
+
+u8 b43_ppr_get_max(struct b43_wldev *dev, struct b43_ppr *ppr)
+{
+ u8 res = 0;
+ int i;
+ u8 *rate;
+
+ ppr_for_each_entry(ppr, i, rate) {
+ res = max(*rate, res);
+ }
+
+ return res;
+}
+
+bool b43_ppr_load_max_from_sprom(struct b43_wldev *dev, struct b43_ppr *ppr,
+ enum b43_band band)
+{
+ struct b43_ppr_rates *rates = &ppr->rates;
+ struct ssb_sprom *sprom = dev->dev->bus_sprom;
+ struct b43_phy *phy = &dev->phy;
+ u8 maxpwr, off;
+ u32 sprom_ofdm_po;
+ u16 *sprom_mcs_po;
+ u8 extra_cdd_po, extra_stbc_po;
+ int i;
+
+ switch (band) {
+ case B43_BAND_2G:
+ maxpwr = min(sprom->core_pwr_info[0].maxpwr_2g,
+ sprom->core_pwr_info[1].maxpwr_2g);
+ sprom_ofdm_po = sprom->ofdm2gpo;
+ sprom_mcs_po = sprom->mcs2gpo;
+ extra_cdd_po = (sprom->cddpo >> 0) & 0xf;
+ extra_stbc_po = (sprom->stbcpo >> 0) & 0xf;
+ break;
+ case B43_BAND_5G_LO:
+ maxpwr = min(sprom->core_pwr_info[0].maxpwr_5gl,
+ sprom->core_pwr_info[1].maxpwr_5gl);
+ sprom_ofdm_po = sprom->ofdm5glpo;
+ sprom_mcs_po = sprom->mcs5glpo;
+ extra_cdd_po = (sprom->cddpo >> 8) & 0xf;
+ extra_stbc_po = (sprom->stbcpo >> 8) & 0xf;
+ break;
+ case B43_BAND_5G_MI:
+ maxpwr = min(sprom->core_pwr_info[0].maxpwr_5g,
+ sprom->core_pwr_info[1].maxpwr_5g);
+ sprom_ofdm_po = sprom->ofdm5gpo;
+ sprom_mcs_po = sprom->mcs5gpo;
+ extra_cdd_po = (sprom->cddpo >> 4) & 0xf;
+ extra_stbc_po = (sprom->stbcpo >> 4) & 0xf;
+ break;
+ case B43_BAND_5G_HI:
+ maxpwr = min(sprom->core_pwr_info[0].maxpwr_5gh,
+ sprom->core_pwr_info[1].maxpwr_5gh);
+ sprom_ofdm_po = sprom->ofdm5ghpo;
+ sprom_mcs_po = sprom->mcs5ghpo;
+ extra_cdd_po = (sprom->cddpo >> 12) & 0xf;
+ extra_stbc_po = (sprom->stbcpo >> 12) & 0xf;
+ break;
+ default:
+ WARN_ON_ONCE(1);
+ return false;
+ }
+
+ if (band == B43_BAND_2G) {
+ for (i = 0; i < 4; i++) {
+ off = ((sprom->cck2gpo >> (i * 4)) & 0xf) * 2;
+ rates->cck[i] = maxpwr - off;
+ }
+ }
+
+ /* OFDM */
+ for (i = 0; i < 8; i++) {
+ off = ((sprom_ofdm_po >> (i * 4)) & 0xf) * 2;
+ rates->ofdm[i] = maxpwr - off;
+ }
+
+ /* MCS 20 SISO */
+ rates->mcs_20[0] = rates->ofdm[0];
+ rates->mcs_20[1] = rates->ofdm[2];
+ rates->mcs_20[2] = rates->ofdm[3];
+ rates->mcs_20[3] = rates->ofdm[4];
+ rates->mcs_20[4] = rates->ofdm[5];
+ rates->mcs_20[5] = rates->ofdm[6];
+ rates->mcs_20[6] = rates->ofdm[7];
+ rates->mcs_20[7] = rates->ofdm[7];
+
+ /* MCS 20 CDD */
+ for (i = 0; i < 4; i++) {
+ off = ((sprom_mcs_po[0] >> (i * 4)) & 0xf) * 2;
+ rates->mcs_20_cdd[i] = maxpwr - off;
+ if (phy->type == B43_PHYTYPE_N && phy->rev >= 3)
+ rates->mcs_20_cdd[i] -= extra_cdd_po;
+ }
+ for (i = 0; i < 4; i++) {
+ off = ((sprom_mcs_po[1] >> (i * 4)) & 0xf) * 2;
+ rates->mcs_20_cdd[4 + i] = maxpwr - off;
+ if (phy->type == B43_PHYTYPE_N && phy->rev >= 3)
+ rates->mcs_20_cdd[4 + i] -= extra_cdd_po;
+ }
+
+ /* OFDM 20 CDD */
+ rates->ofdm_20_cdd[0] = rates->mcs_20_cdd[0];
+ rates->ofdm_20_cdd[1] = rates->mcs_20_cdd[0];
+ rates->ofdm_20_cdd[2] = rates->mcs_20_cdd[1];
+ rates->ofdm_20_cdd[3] = rates->mcs_20_cdd[2];
+ rates->ofdm_20_cdd[4] = rates->mcs_20_cdd[3];
+ rates->ofdm_20_cdd[5] = rates->mcs_20_cdd[4];
+ rates->ofdm_20_cdd[6] = rates->mcs_20_cdd[5];
+ rates->ofdm_20_cdd[7] = rates->mcs_20_cdd[6];
+
+ /* MCS 20 STBC */
+ for (i = 0; i < 4; i++) {
+ off = ((sprom_mcs_po[0] >> (i * 4)) & 0xf) * 2;
+ rates->mcs_20_stbc[i] = maxpwr - off;
+ if (phy->type == B43_PHYTYPE_N && phy->rev >= 3)
+ rates->mcs_20_stbc[i] -= extra_stbc_po;
+ }
+ for (i = 0; i < 4; i++) {
+ off = ((sprom_mcs_po[1] >> (i * 4)) & 0xf) * 2;
+ rates->mcs_20_stbc[4 + i] = maxpwr - off;
+ if (phy->type == B43_PHYTYPE_N && phy->rev >= 3)
+ rates->mcs_20_stbc[4 + i] -= extra_stbc_po;
+ }
+
+ /* MCS 20 SDM */
+ for (i = 0; i < 4; i++) {
+ off = ((sprom_mcs_po[2] >> (i * 4)) & 0xf) * 2;
+ rates->mcs_20_sdm[i] = maxpwr - off;
+ }
+ for (i = 0; i < 4; i++) {
+ off = ((sprom_mcs_po[3] >> (i * 4)) & 0xf) * 2;
+ rates->mcs_20_sdm[4 + i] = maxpwr - off;
+ }
+
+ return true;
+}
diff --git a/drivers/net/wireless/b43/ppr.h b/drivers/net/wireless/b43/ppr.h
new file mode 100644
index 000000000000..24d7447e9f01
--- /dev/null
+++ b/drivers/net/wireless/b43/ppr.h
@@ -0,0 +1,45 @@
+#ifndef LINUX_B43_PPR_H_
+#define LINUX_B43_PPR_H_
+
+#include <linux/types.h>
+
+#define B43_PPR_CCK_RATES_NUM 4
+#define B43_PPR_OFDM_RATES_NUM 8
+#define B43_PPR_MCS_RATES_NUM 8
+
+#define B43_PPR_RATES_NUM (B43_PPR_CCK_RATES_NUM + \
+ B43_PPR_OFDM_RATES_NUM * 2 + \
+ B43_PPR_MCS_RATES_NUM * 4)
+
+struct b43_ppr_rates {
+ u8 cck[B43_PPR_CCK_RATES_NUM];
+ u8 ofdm[B43_PPR_OFDM_RATES_NUM];
+ u8 ofdm_20_cdd[B43_PPR_OFDM_RATES_NUM];
+ u8 mcs_20[B43_PPR_MCS_RATES_NUM]; /* SISO */
+ u8 mcs_20_cdd[B43_PPR_MCS_RATES_NUM];
+ u8 mcs_20_stbc[B43_PPR_MCS_RATES_NUM];
+ u8 mcs_20_sdm[B43_PPR_MCS_RATES_NUM];
+};
+
+struct b43_ppr {
+ /* All powers are in qdbm (Q5.2) */
+ union {
+ u8 __all_rates[B43_PPR_RATES_NUM];
+ struct b43_ppr_rates rates;
+ };
+};
+
+struct b43_wldev;
+enum b43_band;
+
+void b43_ppr_clear(struct b43_wldev *dev, struct b43_ppr *ppr);
+
+void b43_ppr_add(struct b43_wldev *dev, struct b43_ppr *ppr, int diff);
+void b43_ppr_apply_max(struct b43_wldev *dev, struct b43_ppr *ppr, u8 max);
+void b43_ppr_apply_min(struct b43_wldev *dev, struct b43_ppr *ppr, u8 min);
+u8 b43_ppr_get_max(struct b43_wldev *dev, struct b43_ppr *ppr);
+
+bool b43_ppr_load_max_from_sprom(struct b43_wldev *dev, struct b43_ppr *ppr,
+ enum b43_band band);
+
+#endif /* LINUX_B43_PPR_H_ */
generated by cgit v1.2.3 (git 2.39.1) at 2024-10-20 02:08:20 +0000