Commit e57b7901 authored by Ryder Lee's avatar Ryder Lee Committed by Felix Fietkau
Browse files

mt76: add mac80211 driver for MT7915 PCIe-based chipsets 



Add support for the MediaTek latest generation IEEE 802.11ax 4x4
device MT7915E, which supports concurrent dual-band operation at
both 5GHz and 2.4GHz.

Note that this patch just add basic part and will add more HE
capabilities support in the further patches.

The driver supports AP, Station, Mesh and monitor mode.

Signed-off-by: default avatarRyder Lee <ryder.lee@mediatek.com>
Signed-off-by: default avatarShayne Chen <shayne.chen@mediatek.com>
Signed-off-by: default avatarChih-Min Chen <chih-min.chen@mediatek.com>
Suggested-by: default avatarShihwei Lin <shihwei.lin@mediatek.com>
Tested-by: default avatarEvelyn Tsai <evelyn.tsai@mediatek.com>
Acked-by: default avatarYiwei Chung <yiwei.chung@mediatek.com>
Acked-by: default avatarYF Luo <yf.luo@mediatek.com>
Signed-off-by: default avatarFelix Fietkau <nbd@nbd.name>
parent d3377b78

drivers/net/wireless/mediatek/mt76/Kconfig

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@@ -24,3 +24,4 @@ source "drivers/net/wireless/mediatek/mt76/mt76x0/Kconfig" 
source "drivers/net/wireless/mediatek/mt76/mt76x2/Kconfig"

source "drivers/net/wireless/mediatek/mt76/mt7603/Kconfig"

source "drivers/net/wireless/mediatek/mt76/mt7615/Kconfig"

source "drivers/net/wireless/mediatek/mt76/mt7915/Kconfig"

drivers/net/wireless/mediatek/mt76/Makefile

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@@ -27,3 +27,4 @@ obj-$(CONFIG_MT76x0_COMMON) += mt76x0/ 
obj-$(CONFIG_MT76x2_COMMON) += mt76x2/

obj-$(CONFIG_MT7603E) += mt7603/

obj-$(CONFIG_MT7615_COMMON) += mt7615/

obj-$(CONFIG_MT7915E) += mt7915/

drivers/net/wireless/mediatek/mt76/mt7915/Kconfig

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# SPDX-License-Identifier: ISC

config MT7915E

	tristate "MediaTek MT7915E (PCIe) support"

	select MT76_CORE

	depends on MAC80211

	depends on PCI

	help

	  This adds support for MT7915-based wireless PCIe devices,

	  which support concurrent dual-band operation at both 5GHz

	  and 2.4GHz IEEE 802.11ax 4x4:4SS 1024-QAM, 160MHz channels,

	  OFDMA, spatial reuse and dual carrier modulation.



	  To compile this driver as a module, choose M here.

drivers/net/wireless/mediatek/mt76/mt7915/Makefile

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#SPDX-License-Identifier: ISC



obj-$(CONFIG_MT7915E) += mt7915e.o



mt7915e-y := pci.o init.o dma.o eeprom.o main.o mcu.o mac.o \

	     debugfs.o

drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c

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+245 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: ISC

/* Copyright (C) 2020 MediaTek Inc. */



#include "mt7915.h"

#include "eeprom.h"



/** global debugfs **/



/* test knob of system layer 1/2 error recovery */

static int mt7915_ser_trigger_set(void *data, u64 val)

{

	enum {

		SER_SET_RECOVER_L1 = 1,

		SER_SET_RECOVER_L2,

		SER_ENABLE = 2,

		SER_RECOVER

	};

	struct mt7915_dev *dev = data;

	int ret = 0;



	switch (val) {

	case SER_SET_RECOVER_L1:

	case SER_SET_RECOVER_L2:

		/* fall through */

		ret = mt7915_mcu_set_ser(dev, SER_ENABLE, BIT(val), 0);

		if (ret)

			return ret;



		return mt7915_mcu_set_ser(dev, SER_RECOVER, val, 0);

	default:

		break;

	}



	return ret;

}



DEFINE_DEBUGFS_ATTRIBUTE(fops_ser_trigger, NULL,

			 mt7915_ser_trigger_set, "%lld\n");



static int

mt7915_radar_trigger(void *data, u64 val)

{

	struct mt7915_dev *dev = data;



	return mt7915_mcu_rdd_cmd(dev, RDD_RADAR_EMULATE, 1, 0, 0);

}



DEFINE_DEBUGFS_ATTRIBUTE(fops_radar_trigger, NULL,

			 mt7915_radar_trigger, "%lld\n");



static int

mt7915_dbdc_set(void *data, u64 val)

{

	struct mt7915_dev *dev = data;



	if (val)

		mt7915_register_ext_phy(dev);

	else

		mt7915_unregister_ext_phy(dev);



	return 0;

}



static int

mt7915_dbdc_get(void *data, u64 *val)

{

	struct mt7915_dev *dev = data;



	*val = !!mt7915_ext_phy(dev);



	return 0;

}



DEFINE_DEBUGFS_ATTRIBUTE(fops_dbdc, mt7915_dbdc_get,

			 mt7915_dbdc_set, "%lld\n");



static void

mt7915_ampdu_stat_read_phy(struct mt7915_phy *phy,

			   struct seq_file *file)

{

	struct mt7915_dev *dev = file->private;

	bool ext_phy = phy != &dev->phy;

	int bound[15], range[4], i, n;



	if (!phy)

		return;



	/* Tx ampdu stat */

	for (i = 0; i < ARRAY_SIZE(range); i++)

		range[i] = mt76_rr(dev, MT_MIB_ARNG(ext_phy, i));



	for (i = 0; i < ARRAY_SIZE(bound); i++)

		bound[i] = MT_MIB_ARNCR_RANGE(range[i / 4], i) + 1;



	seq_printf(file, "\nPhy %d\n", ext_phy);



	seq_printf(file, "Length: %8d | ", bound[0]);

	for (i = 0; i < ARRAY_SIZE(bound) - 1; i++)

		seq_printf(file, "%3d -%3d | ",

			   bound[i] + 1, bound[i + 1]);



	seq_puts(file, "\nCount:  ");

	n = ext_phy ? ARRAY_SIZE(dev->mt76.aggr_stats) / 2 : 0;

	for (i = 0; i < ARRAY_SIZE(bound); i++)

		seq_printf(file, "%8d | ", dev->mt76.aggr_stats[i + n]);

	seq_puts(file, "\n");



	seq_printf(file, "BA miss count: %d\n", phy->mib.ba_miss_cnt);

}



static int

mt7915_tx_stats_read(struct seq_file *file, void *data)

{

	struct mt7915_dev *dev = file->private;

	int stat[8], i, n;



	mt7915_ampdu_stat_read_phy(&dev->phy, file);

	mt7915_ampdu_stat_read_phy(mt7915_ext_phy(dev), file);



	/* Tx amsdu info */

	seq_puts(file, "Tx MSDU stat:\n");

	for (i = 0, n = 0; i < ARRAY_SIZE(stat); i++) {

		stat[i] = mt76_rr(dev,  MT_PLE_AMSDU_PACK_MSDU_CNT(i));

		n += stat[i];

	}



	for (i = 0; i < ARRAY_SIZE(stat); i++) {

		seq_printf(file, "AMSDU pack count of %d MSDU in TXD: 0x%x ",

			   i + 1, stat[i]);

		if (n != 0)

			seq_printf(file, "(%d%%)\n", stat[i] * 100 / n);

		else

			seq_puts(file, "\n");

	}



	return 0;

}



static int

mt7915_tx_stats_open(struct inode *inode, struct file *f)

{

	return single_open(f, mt7915_tx_stats_read, inode->i_private);

}



static const struct file_operations fops_tx_stats = {

	.open = mt7915_tx_stats_open,

	.read = seq_read,

	.llseek = seq_lseek,

	.release = single_release,

};



static int mt7915_read_temperature(struct seq_file *s, void *data)

{

	struct mt7915_dev *dev = dev_get_drvdata(s->private);

	int temp;



	/* cpu */

	temp = mt7915_mcu_get_temperature(dev, 0);

	seq_printf(s, "Temperature: %d\n", temp);



	return 0;

}



static int

mt7915_queues_acq(struct seq_file *s, void *data)

{

	struct mt7915_dev *dev = dev_get_drvdata(s->private);

	int i;



	for (i = 0; i < 16; i++) {

		int j, acs = i / 4, index = i % 4;

		u32 ctrl, val, qlen = 0;



		val = mt76_rr(dev, MT_PLE_AC_QEMPTY(acs, index));

		ctrl = BIT(31) | BIT(15) | (acs << 8);



		for (j = 0; j < 32; j++) {

			if (val & BIT(j))

				continue;



			mt76_wr(dev, MT_PLE_FL_Q0_CTRL,

				ctrl | (j + (index << 5)));

			qlen += mt76_get_field(dev, MT_PLE_FL_Q3_CTRL,

					       GENMASK(11, 0));

		}

		seq_printf(s, "AC%d%d: queued=%d\n", acs, index, qlen);

	}



	return 0;

}



static int

mt7915_queues_read(struct seq_file *s, void *data)

{

	struct mt7915_dev *dev = dev_get_drvdata(s->private);

	static const struct {

		char *queue;

		int id;

	} queue_map[] = {

		{ "WFDMA0", MT_TXQ_BE },

		{ "MCUWM", MT_TXQ_MCU },

		{ "MCUWA", MT_TXQ_MCU_WA },

		{ "MCUFWQ", MT_TXQ_FWDL },

	};

	int i;



	for (i = 0; i < ARRAY_SIZE(queue_map); i++) {

		struct mt76_sw_queue *q = &dev->mt76.q_tx[queue_map[i].id];



		if (!q->q)

			continue;



		seq_printf(s,

			   "%s:	queued=%d head=%d tail=%d\n",

			   queue_map[i].queue, q->q->queued, q->q->head,

			   q->q->tail);

	}



	return 0;

}



int mt7915_init_debugfs(struct mt7915_dev *dev)

{

	struct dentry *dir;



	dir = mt76_register_debugfs(&dev->mt76);

	if (!dir)

		return -ENOMEM;



	debugfs_create_devm_seqfile(dev->mt76.dev, "queues", dir,

				    mt7915_queues_read);

	debugfs_create_devm_seqfile(dev->mt76.dev, "acq", dir,

				    mt7915_queues_acq);

	debugfs_create_file("tx_stats", 0400, dir, dev, &fops_tx_stats);

	debugfs_create_file("dbdc", 0600, dir, dev, &fops_dbdc);

	debugfs_create_u32("dfs_hw_pattern", 0400, dir, &dev->hw_pattern);

	/* test knobs */

	debugfs_create_file("radar_trigger", 0200, dir, dev,

			    &fops_radar_trigger);

	debugfs_create_file("ser_trigger", 0200, dir, dev, &fops_ser_trigger);

	debugfs_create_devm_seqfile(dev->mt76.dev, "temperature", dir,

				    mt7915_read_temperature);



	return 0;

}

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