iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

mt76: mt7915: add support for ipg in testmode

Browse Source 
Add support to calculate and apply ipg parameters in testmode
for MT7915 NIC.

Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Shayne Chen 2021-01-05 16:55:27 +08:00 committed by Felix Fietkau
parent 7ff903bc49
commit c2d3b1926f
4 changed files with 142 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/net/wireless/mediatek/mt76/mt7915/mcu.h
View File

@ -49,6 +49,7 @@ enum {
enum {
MCU_ATE_SET_TRX = 0x1,
MCU_ATE_SET_FREQ_OFFSET = 0xa,
MCU_ATE_SET_SLOT_TIME = 0x13,
};
struct mt7915_mcu_rxd {

8
drivers/net/wireless/mediatek/mt76/mt7915/regs.h
View File

@ -59,6 +59,13 @@
#define MT_TIMEOUT_VAL_PLCP GENMASK(15, 0)
#define MT_TIMEOUT_VAL_CCA GENMASK(31, 16)
#define MT_TMAC_ATCR(_band) MT_WF_TMAC(_band, 0x098)
#define MT_TMAC_ATCR_TXV_TOUT GENMASK(7, 0)
#define MT_TMAC_TRCR0(_band) MT_WF_TMAC(_band, 0x09c)
#define MT_TMAC_TRCR0_TR2T_CHK GENMASK(8, 0)
#define MT_TMAC_TRCR0_I2T_CHK GENMASK(24, 16)
#define MT_TMAC_ICR0(_band) MT_WF_TMAC(_band, 0x0a4)
#define MT_IFS_EIFS GENMASK(8, 0)
#define MT_IFS_RIFS GENMASK(14, 10)
@ -70,7 +77,6 @@
#define MT_TMAC_CTCR0_INS_DDLMT_EN BIT(17)
#define MT_TMAC_CTCR0_INS_DDLMT_VHT_SMPDU_EN BIT(18)
#define MT_TMAC_TRCR0(_band) MT_WF_TMAC(_band, 0x09c)
#define MT_TMAC_TFCR0(_band) MT_WF_TMAC(_band, 0x1e0)
#define MT_WF_DMA_BASE(_band) ((_band) ? 0xa1e00 : 0x21e00)

125
drivers/net/wireless/mediatek/mt76/mt7915/testmode.c
View File

@ -132,6 +132,111 @@ mt7915_tm_set_trx(struct mt7915_phy *phy, int type, bool en)
sizeof(req), false);
}
static int
mt7915_tm_set_slot_time(struct mt7915_phy *phy, u8 slot_time, u8 sifs)
{
struct mt7915_dev *dev = phy->dev;
struct mt7915_tm_cmd req = {
.testmode_en = !(phy->mt76->test.state == MT76_TM_STATE_OFF),
.param_idx = MCU_ATE_SET_SLOT_TIME,
.param.slot.slot_time = slot_time,
.param.slot.sifs = sifs,
.param.slot.rifs = 2,
.param.slot.eifs = cpu_to_le16(60),
.param.slot.band = phy != &dev->phy,
};
return mt76_mcu_send_msg(&dev->mt76, MCU_EXT_CMD_ATE_CTRL, &req,
sizeof(req), false);
}
static int
mt7915_tm_set_wmm_qid(struct mt7915_dev *dev, u8 qid, u8 aifs, u8 cw_min,
u16 cw_max, u16 txop)
{
struct mt7915_mcu_tx req = { .total = 1 };
struct edca *e = &req.edca[0];
e->queue = qid;
e->set = WMM_PARAM_SET;
e->aifs = aifs;
e->cw_min = cw_min;
e->cw_max = cpu_to_le16(cw_max);
e->txop = cpu_to_le16(txop);
return mt7915_mcu_update_edca(dev, &req);
}
static int
mt7915_tm_set_ipg_params(struct mt7915_phy *phy, u32 ipg, u8 mode)
{
#define TM_DEFAULT_SIFS 10
#define TM_MAX_SIFS 127
#define TM_MAX_AIFSN 0xf
#define TM_MIN_AIFSN 0x1
#define BBP_PROC_TIME 1500
struct mt7915_dev *dev = phy->dev;
u8 sig_ext = (mode == MT76_TM_TX_MODE_CCK) ? 0 : 6;
u8 slot_time = 9, sifs = TM_DEFAULT_SIFS;
u8 aifsn = TM_MIN_AIFSN;
u32 i2t_time, tr2t_time, txv_time;
bool ext_phy = phy != &dev->phy;
u16 cw = 0;
if (ipg < sig_ext + slot_time + sifs)
ipg = 0;
if (!ipg)
goto done;
ipg -= sig_ext;
if (ipg <= (TM_MAX_SIFS + slot_time)) {
sifs = ipg - slot_time;
} else {
u32 val = (ipg + slot_time) / slot_time;
while (val >>= 1)
cw++;
if (cw > 16)
cw = 16;
ipg -= ((1 << cw) - 1) * slot_time;
aifsn = ipg / slot_time;
if (aifsn > TM_MAX_AIFSN)
aifsn = TM_MAX_AIFSN;
ipg -= aifsn * slot_time;
if (ipg > TM_DEFAULT_SIFS) {
if (ipg < TM_MAX_SIFS)
sifs = ipg;
else
sifs = TM_MAX_SIFS;
}
}
done:
txv_time = mt76_get_field(dev, MT_TMAC_ATCR(ext_phy),
MT_TMAC_ATCR_TXV_TOUT);
txv_time *= 50; /* normal clock time */
i2t_time = (slot_time * 1000 - txv_time - BBP_PROC_TIME) / 50;
tr2t_time = (sifs * 1000 - txv_time - BBP_PROC_TIME) / 50;
mt76_set(dev, MT_TMAC_TRCR0(ext_phy),
FIELD_PREP(MT_TMAC_TRCR0_TR2T_CHK, tr2t_time) |
FIELD_PREP(MT_TMAC_TRCR0_I2T_CHK, i2t_time));
mt7915_tm_set_slot_time(phy, slot_time, sifs);
return mt7915_tm_set_wmm_qid(dev,
mt7915_lmac_mapping(dev, IEEE80211_AC_BE),
aifsn, cw, cw, 0);
}
static void
mt7915_tm_reg_backup_restore(struct mt7915_phy *phy)
{
@ -206,9 +311,12 @@ mt7915_tm_set_tx_frames(struct mt7915_phy *phy, bool en)
static const u8 spe_idx_map[] = {0, 0, 1, 0, 3, 2, 4, 0,
9, 8, 6, 10, 16, 12, 18, 0};
struct mt76_testmode_data *td = &phy->mt76->test;
struct sk_buff *skb = phy->mt76->test.tx_skb;
struct mt7915_dev *dev = phy->dev;
struct sk_buff *skb = td->tx_skb;
struct ieee80211_tx_info *info;
u8 duty_cycle = td->tx_duty_cycle;
u32 tx_time = td->tx_time;
u32 ipg = td->tx_ipg;
mt7915_tm_set_trx(phy, TM_MAC_RX_RXV, false);
@ -230,13 +338,26 @@ mt7915_tm_set_tx_frames(struct mt7915_phy *phy, bool en)
}
}
mt7915_tm_set_trx(phy, TM_MAC_TX, en);
/* if all three params are set, duty_cycle will be ignored */
if (duty_cycle && tx_time && !ipg) {
ipg = tx_time * 100 / duty_cycle - tx_time;
} else if (duty_cycle && !tx_time && ipg) {
if (duty_cycle < 100)
tx_time = duty_cycle * ipg / (100 - duty_cycle);
}
mt7915_tm_set_ipg_params(phy, ipg, td->tx_rate_mode);
if (ipg)
td->tx_queued_limit = MT76_TM_TIMEOUT * 1000000 / ipg / 2;
if (!en || !skb)
return;
info = IEEE80211_SKB_CB(skb);
info->control.vif = phy->monitor_vif;
mt7915_tm_set_trx(phy, TM_MAC_TX, en);
}
static void

11
drivers/net/wireless/mediatek/mt76/mt7915/testmode.h
View File

@ -16,6 +16,16 @@ struct mt7915_tm_freq_offset {
__le32 freq_offset;
};
struct mt7915_tm_slot_time {
u8 slot_time;
u8 sifs;
u8 rifs;
u8 _rsv;
__le16 eifs;
u8 band;
u8 _rsv1[5];
};
struct mt7915_tm_cmd {
u8 testmode_en;
u8 param_idx;
@ -24,6 +34,7 @@ struct mt7915_tm_cmd {
__le32 data;
struct mt7915_tm_trx trx;
struct mt7915_tm_freq_offset freq;
struct mt7915_tm_slot_time slot;
u8 test[72];
} param;
} __packed;