From: Sean Wang <[email protected]>
Introduce support for mt7921e 802.11ax (Wi-Fi 6) 2x2:2SS chipset.
Co-developed-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Lorenzo Bianconi <[email protected]>
Co-developed-by: Soul Huang <[email protected]>
Signed-off-by: Soul Huang <[email protected]>
Signed-off-by: Sean Wang <[email protected]>
---
drivers/net/wireless/mediatek/mt76/Kconfig | 1 +
drivers/net/wireless/mediatek/mt76/Makefile | 1 +
.../net/wireless/mediatek/mt76/mt7921/Kconfig | 10 +
.../wireless/mediatek/mt76/mt7921/Makefile | 5 +
.../net/wireless/mediatek/mt76/mt7921/init.c | 248 ++++++++++++++++++
.../net/wireless/mediatek/mt76/mt7921/pci.c | 184 +++++++++++++
6 files changed, 449 insertions(+)
create mode 100644 drivers/net/wireless/mediatek/mt76/mt7921/Kconfig
create mode 100644 drivers/net/wireless/mediatek/mt76/mt7921/Makefile
create mode 100644 drivers/net/wireless/mediatek/mt76/mt7921/init.c
create mode 100644 drivers/net/wireless/mediatek/mt76/mt7921/pci.c
diff --git a/drivers/net/wireless/mediatek/mt76/Kconfig b/drivers/net/wireless/mediatek/mt76/Kconfig
index 74f99f08d0b5..9ff43f1fc50d 100644
--- a/drivers/net/wireless/mediatek/mt76/Kconfig
+++ b/drivers/net/wireless/mediatek/mt76/Kconfig
@@ -33,3 +33,4 @@ 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"
+source "drivers/net/wireless/mediatek/mt76/mt7921/Kconfig"
diff --git a/drivers/net/wireless/mediatek/mt76/Makefile b/drivers/net/wireless/mediatek/mt76/Makefile
index eac419c64788..94efe3c29053 100644
--- a/drivers/net/wireless/mediatek/mt76/Makefile
+++ b/drivers/net/wireless/mediatek/mt76/Makefile
@@ -34,3 +34,4 @@ obj-$(CONFIG_MT76x2_COMMON) += mt76x2/
obj-$(CONFIG_MT7603E) += mt7603/
obj-$(CONFIG_MT7615_COMMON) += mt7615/
obj-$(CONFIG_MT7915E) += mt7915/
+obj-$(CONFIG_MT7921E) += mt7921/
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/Kconfig b/drivers/net/wireless/mediatek/mt76/mt7921/Kconfig
new file mode 100644
index 000000000000..24932d2e8dee
--- /dev/null
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/Kconfig
@@ -0,0 +1,10 @@
+# SPDX-License-Identifier: ISC
+config MT7921E
+ tristate "MediaTek MT7921E (PCIe) support"
+ select MT76_CORE
+ depends on MAC80211
+ depends on PCI
+ help
+ This adds support for MT7921E 802.11ax 2x2:2SS wireless devices.
+
+ To compile this driver as a module, choose M here.
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/Makefile b/drivers/net/wireless/mediatek/mt76/mt7921/Makefile
new file mode 100644
index 000000000000..09d1446ad933
--- /dev/null
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/Makefile
@@ -0,0 +1,5 @@
+#SPDX-License-Identifier: ISC
+
+obj-$(CONFIG_MT7921E) += mt7921e.o
+
+mt7921e-y := pci.o mac.o mcu.o dma.o eeprom.o main.o init.o debugfs.o
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/init.c b/drivers/net/wireless/mediatek/mt76/mt7921/init.c
new file mode 100644
index 000000000000..33acc089eb6a
--- /dev/null
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/init.c
@@ -0,0 +1,248 @@
+// SPDX-License-Identifier: ISC
+/* Copyright (C) 2020 MediaTek Inc. */
+
+#include <linux/etherdevice.h>
+#include "mt7921.h"
+#include "mac.h"
+#include "eeprom.h"
+
+#define CCK_RATE(_idx, _rate) { \
+ .bitrate = _rate, \
+ .flags = IEEE80211_RATE_SHORT_PREAMBLE, \
+ .hw_value = (MT_PHY_TYPE_CCK << 8) | (_idx), \
+ .hw_value_short = (MT_PHY_TYPE_CCK << 8) | (4 + (_idx)), \
+}
+
+#define OFDM_RATE(_idx, _rate) { \
+ .bitrate = _rate, \
+ .hw_value = (MT_PHY_TYPE_OFDM << 8) | (_idx), \
+ .hw_value_short = (MT_PHY_TYPE_OFDM << 8) | (_idx), \
+}
+
+static struct ieee80211_rate mt7921_rates[] = {
+ CCK_RATE(0, 10),
+ CCK_RATE(1, 20),
+ CCK_RATE(2, 55),
+ CCK_RATE(3, 110),
+ OFDM_RATE(11, 60),
+ OFDM_RATE(15, 90),
+ OFDM_RATE(10, 120),
+ OFDM_RATE(14, 180),
+ OFDM_RATE(9, 240),
+ OFDM_RATE(13, 360),
+ OFDM_RATE(8, 480),
+ OFDM_RATE(12, 540),
+};
+
+static const struct ieee80211_iface_limit if_limits[] = {
+ {
+ .max = MT7921_MAX_INTERFACES,
+ .types = BIT(NL80211_IFTYPE_STATION)
+ }
+};
+
+static const struct ieee80211_iface_combination if_comb[] = {
+ {
+ .limits = if_limits,
+ .n_limits = ARRAY_SIZE(if_limits),
+ .max_interfaces = MT7921_MAX_INTERFACES,
+ .num_different_channels = 1,
+ .beacon_int_infra_match = true,
+ }
+};
+
+static void
+mt7921_init_wiphy(struct ieee80211_hw *hw)
+{
+ struct mt7921_phy *phy = mt7921_hw_phy(hw);
+ struct wiphy *wiphy = hw->wiphy;
+
+ hw->queues = 4;
+ hw->max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
+ hw->max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF;
+
+ phy->slottime = 9;
+
+ hw->sta_data_size = sizeof(struct mt7921_sta);
+ hw->vif_data_size = sizeof(struct mt7921_vif);
+
+ wiphy->iface_combinations = if_comb;
+ wiphy->n_iface_combinations = ARRAY_SIZE(if_comb);
+ wiphy->max_scan_ie_len = MT7921_SCAN_IE_LEN;
+ wiphy->max_scan_ssids = 4;
+ wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
+
+ wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_SET_SCAN_DWELL);
+
+ ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS);
+ ieee80211_hw_set(hw, HAS_RATE_CONTROL);
+ ieee80211_hw_set(hw, SUPPORTS_TX_ENCAP_OFFLOAD);
+ ieee80211_hw_set(hw, WANT_MONITOR_VIF);
+
+ hw->max_tx_fragments = 4;
+}
+
+static void
+mt7921_mac_init_band(struct mt7921_dev *dev, u8 band)
+{
+ u32 mask, set;
+
+ mt76_rmw_field(dev, MT_TMAC_CTCR0(band),
+ MT_TMAC_CTCR0_INS_DDLMT_REFTIME, 0x3f);
+ mt76_set(dev, MT_TMAC_CTCR0(band),
+ MT_TMAC_CTCR0_INS_DDLMT_VHT_SMPDU_EN |
+ MT_TMAC_CTCR0_INS_DDLMT_EN);
+
+ mask = MT_MDP_RCFR0_MCU_RX_MGMT |
+ MT_MDP_RCFR0_MCU_RX_CTL_NON_BAR |
+ MT_MDP_RCFR0_MCU_RX_CTL_BAR;
+ set = FIELD_PREP(MT_MDP_RCFR0_MCU_RX_MGMT, MT_MDP_TO_HIF) |
+ FIELD_PREP(MT_MDP_RCFR0_MCU_RX_CTL_NON_BAR, MT_MDP_TO_HIF) |
+ FIELD_PREP(MT_MDP_RCFR0_MCU_RX_CTL_BAR, MT_MDP_TO_HIF);
+ mt76_rmw(dev, MT_MDP_BNRCFR0(band), mask, set);
+
+ mask = MT_MDP_RCFR1_MCU_RX_BYPASS |
+ MT_MDP_RCFR1_RX_DROPPED_UCAST |
+ MT_MDP_RCFR1_RX_DROPPED_MCAST;
+ set = FIELD_PREP(MT_MDP_RCFR1_MCU_RX_BYPASS, MT_MDP_TO_HIF) |
+ FIELD_PREP(MT_MDP_RCFR1_RX_DROPPED_UCAST, MT_MDP_TO_HIF) |
+ FIELD_PREP(MT_MDP_RCFR1_RX_DROPPED_MCAST, MT_MDP_TO_HIF);
+ mt76_rmw(dev, MT_MDP_BNRCFR1(band), mask, set);
+
+ mt76_set(dev, MT_WF_RMAC_MIB_TIME0(band), MT_WF_RMAC_MIB_RXTIME_EN);
+ mt76_set(dev, MT_WF_RMAC_MIB_AIRTIME0(band), MT_WF_RMAC_MIB_RXTIME_EN);
+
+ mt76_rmw_field(dev, MT_DMA_DCR0(band), MT_DMA_DCR0_MAX_RX_LEN, 1536);
+ /* disable rx rate report by default due to hw issues */
+ mt76_clear(dev, MT_DMA_DCR0(band), MT_DMA_DCR0_RXD_G5_EN);
+}
+
+static void mt7921_mac_init(struct mt7921_dev *dev)
+{
+ int i;
+
+ mt76_rmw_field(dev, MT_MDP_DCR1, MT_MDP_DCR1_MAX_RX_LEN, 1536);
+ /* disable hardware de-agg */
+ mt76_clear(dev, MT_MDP_DCR0, MT_MDP_DCR0_DAMSDU_EN);
+ mt76_clear(dev, MT_MDP_DCR0, MT_MDP_DCR0_RX_HDR_TRANS_EN);
+
+ for (i = 0; i < MT7921_WTBL_SIZE; i++)
+ mt7921_mac_wtbl_update(dev, i,
+ MT_WTBL_UPDATE_ADM_COUNT_CLEAR);
+ for (i = 0; i < 2; i++)
+ mt7921_mac_init_band(dev, i);
+
+ mt7921_mcu_set_rts_thresh(&dev->phy, 0x92b);
+}
+
+static void mt7921_init_work(struct work_struct *work)
+{
+ struct mt7921_dev *dev = container_of(work, struct mt7921_dev,
+ init_work);
+
+ mt7921_mcu_set_eeprom(dev);
+ mt7921_mac_init(dev);
+}
+
+static int mt7921_init_hardware(struct mt7921_dev *dev)
+{
+ int ret, idx;
+
+ INIT_WORK(&dev->init_work, mt7921_init_work);
+ spin_lock_init(&dev->token_lock);
+ idr_init(&dev->token);
+
+ ret = mt7921_dma_init(dev);
+ if (ret)
+ return ret;
+
+ set_bit(MT76_STATE_INITIALIZED, &dev->mphy.state);
+
+ /* force firmware operation mode into normal state,
+ * which should be set before firmware download stage.
+ */
+ mt76_wr(dev, MT_SWDEF_MODE, MT_SWDEF_NORMAL_MODE);
+
+ ret = mt7921_mcu_init(dev);
+ if (ret)
+ return ret;
+
+ ret = mt7921_eeprom_init(dev);
+ if (ret < 0)
+ return ret;
+
+ /* Beacon and mgmt frames should occupy wcid 0 */
+ idx = mt76_wcid_alloc(dev->mt76.wcid_mask, MT7921_WTBL_STA - 1);
+ if (idx)
+ return -ENOSPC;
+
+ dev->mt76.global_wcid.idx = idx;
+ dev->mt76.global_wcid.hw_key_idx = -1;
+ dev->mt76.global_wcid.tx_info |= MT_WCID_TX_INFO_SET;
+ rcu_assign_pointer(dev->mt76.wcid[idx], &dev->mt76.global_wcid);
+
+ return 0;
+}
+
+int mt7921_register_device(struct mt7921_dev *dev)
+{
+ struct ieee80211_hw *hw = mt76_hw(dev);
+ int ret;
+
+ dev->phy.dev = dev;
+ dev->phy.mt76 = &dev->mt76.phy;
+ dev->mt76.phy.priv = &dev->phy;
+ INIT_LIST_HEAD(&dev->phy.stats_list);
+ INIT_DELAYED_WORK(&dev->mphy.mac_work, mt7921_mac_work);
+ INIT_DELAYED_WORK(&dev->phy.scan_work, mt7921_scan_work);
+ skb_queue_head_init(&dev->phy.scan_event_list);
+ INIT_LIST_HEAD(&dev->sta_poll_list);
+ spin_lock_init(&dev->sta_poll_lock);
+
+ init_waitqueue_head(&dev->reset_wait);
+ INIT_WORK(&dev->reset_work, mt7921_mac_reset_work);
+
+ ret = mt7921_init_hardware(dev);
+ if (ret)
+ return ret;
+
+ mt7921_init_wiphy(hw);
+ dev->mphy.sband_2g.sband.ht_cap.cap |=
+ IEEE80211_HT_CAP_LDPC_CODING |
+ IEEE80211_HT_CAP_MAX_AMSDU;
+ dev->mphy.sband_5g.sband.ht_cap.cap |=
+ IEEE80211_HT_CAP_LDPC_CODING |
+ IEEE80211_HT_CAP_MAX_AMSDU;
+ dev->mphy.sband_5g.sband.vht_cap.cap |=
+ IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991 |
+ IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
+ dev->mphy.sband_5g.sband.vht_cap.cap |=
+ IEEE80211_VHT_CAP_SHORT_GI_160 |
+ IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ;
+ dev->mphy.hw->wiphy->available_antennas_rx = dev->mphy.chainmask;
+ dev->mphy.hw->wiphy->available_antennas_tx = dev->mphy.chainmask;
+
+ mt76_set_stream_caps(&dev->mphy, true);
+ mt7921_set_stream_he_caps(&dev->phy);
+
+ ret = mt76_register_device(&dev->mt76, true, mt7921_rates,
+ ARRAY_SIZE(mt7921_rates));
+ if (ret)
+ return ret;
+
+ ieee80211_queue_work(mt76_hw(dev), &dev->init_work);
+
+ return 0;
+}
+
+void mt7921_unregister_device(struct mt7921_dev *dev)
+{
+ mt76_unregister_device(&dev->mt76);
+ mt7921_mcu_exit(dev);
+ mt7921_dma_cleanup(dev);
+
+ mt7921_tx_token_put(dev);
+
+ tasklet_disable(&dev->irq_tasklet);
+ mt76_free_device(&dev->mt76);
+}
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/pci.c b/drivers/net/wireless/mediatek/mt76/mt7921/pci.c
new file mode 100644
index 000000000000..6808bc749583
--- /dev/null
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/pci.c
@@ -0,0 +1,184 @@
+// SPDX-License-Identifier: ISC
+/* Copyright (C) 2020 MediaTek Inc.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+
+#include "mt7921.h"
+#include "mac.h"
+#include "../trace.h"
+
+static const struct pci_device_id mt7921_pci_device_table[] = {
+ { PCI_DEVICE(0x14c3, 0x7961) },
+ { },
+};
+
+static void
+mt7921_rx_poll_complete(struct mt76_dev *mdev, enum mt76_rxq_id q)
+{
+ struct mt7921_dev *dev = container_of(mdev, struct mt7921_dev, mt76);
+
+ if (q == MT_RXQ_MAIN)
+ mt7921_irq_enable(dev, MT_INT_RX_DONE_DATA);
+ else if (q == MT_RXQ_MCU_WA)
+ mt7921_irq_enable(dev, MT_INT_RX_DONE_WM2);
+ else
+ mt7921_irq_enable(dev, MT_INT_RX_DONE_WM);
+}
+
+static irqreturn_t mt7921_irq_handler(int irq, void *dev_instance)
+{
+ struct mt7921_dev *dev = dev_instance;
+
+ mt76_wr(dev, MT_WFDMA0_HOST_INT_ENA, 0);
+
+ if (!test_bit(MT76_STATE_INITIALIZED, &dev->mphy.state))
+ return IRQ_NONE;
+
+ tasklet_schedule(&dev->irq_tasklet);
+
+ return IRQ_HANDLED;
+}
+
+static void mt7921_irq_tasklet(unsigned long data)
+{
+ struct mt7921_dev *dev = (struct mt7921_dev *)data;
+ u32 intr, mask = 0;
+
+ mt76_wr(dev, MT_WFDMA0_HOST_INT_ENA, 0);
+
+ intr = mt76_rr(dev, MT_WFDMA0_HOST_INT_STA);
+ intr &= dev->mt76.mmio.irqmask;
+ mt76_wr(dev, MT_WFDMA0_HOST_INT_STA, intr);
+
+ trace_dev_irq(&dev->mt76, intr, dev->mt76.mmio.irqmask);
+
+ mask |= intr & MT_INT_RX_DONE_ALL;
+ if (intr & MT_INT_TX_DONE_MCU)
+ mask |= MT_INT_TX_DONE_MCU;
+
+ mt76_set_irq_mask(&dev->mt76, MT_WFDMA0_HOST_INT_ENA, mask, 0);
+
+ if (intr & MT_INT_TX_DONE_ALL)
+ napi_schedule(&dev->mt76.tx_napi);
+
+ if (intr & MT_INT_RX_DONE_WM)
+ napi_schedule(&dev->mt76.napi[MT_RXQ_MCU]);
+
+ if (intr & MT_INT_RX_DONE_WM2)
+ napi_schedule(&dev->mt76.napi[MT_RXQ_MCU_WA]);
+
+ if (intr & MT_INT_RX_DONE_DATA)
+ napi_schedule(&dev->mt76.napi[MT_RXQ_MAIN]);
+}
+
+static int mt7921_pci_probe(struct pci_dev *pdev,
+ const struct pci_device_id *id)
+{
+ static const struct mt76_driver_ops drv_ops = {
+ /* txwi_size = txd size + txp size */
+ .txwi_size = MT_TXD_SIZE + sizeof(struct mt7921_txp_common),
+ .drv_flags = MT_DRV_TXWI_NO_FREE | MT_DRV_HW_MGMT_TXQ |
+ MT_DRV_AMSDU_OFFLOAD,
+ .survey_flags = SURVEY_INFO_TIME_TX |
+ SURVEY_INFO_TIME_RX |
+ SURVEY_INFO_TIME_BSS_RX,
+ .tx_prepare_skb = mt7921_tx_prepare_skb,
+ .tx_complete_skb = mt7921_tx_complete_skb,
+ .rx_skb = mt7921_queue_rx_skb,
+ .rx_poll_complete = mt7921_rx_poll_complete,
+ .sta_ps = mt7921_sta_ps,
+ .sta_add = mt7921_mac_sta_add,
+ .sta_remove = mt7921_mac_sta_remove,
+ .update_survey = mt7921_update_channel,
+ };
+ struct mt7921_dev *dev;
+ struct mt76_dev *mdev;
+ int ret;
+
+ ret = pcim_enable_device(pdev);
+ if (ret)
+ return ret;
+
+ ret = pcim_iomap_regions(pdev, BIT(0), pci_name(pdev));
+ if (ret)
+ return ret;
+
+ pci_set_master(pdev);
+
+ ret = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_LEGACY);
+ if (ret < 0)
+ return ret;
+
+ ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+ if (ret)
+ goto err_free_pci_vec;
+
+ mt76_pci_disable_aspm(pdev);
+
+ mdev = mt76_alloc_device(&pdev->dev, sizeof(*dev), &mt7921_ops,
+ &drv_ops);
+ if (!mdev) {
+ ret = -ENOMEM;
+ goto err_free_pci_vec;
+ }
+
+ dev = container_of(mdev, struct mt7921_dev, mt76);
+
+ mt76_mmio_init(&dev->mt76, pcim_iomap_table(pdev)[0]);
+ tasklet_init(&dev->irq_tasklet, mt7921_irq_tasklet, (unsigned long)dev);
+ mdev->rev = (mt7921_l1_rr(dev, MT_HW_CHIPID) << 16) |
+ (mt7921_l1_rr(dev, MT_HW_REV) & 0xff);
+ dev_err(mdev->dev, "ASIC revision: %04x\n", mdev->rev);
+
+ mt76_wr(dev, MT_WFDMA0_HOST_INT_ENA, 0);
+
+ mt7921_l1_wr(dev, MT_PCIE_MAC_INT_ENABLE, 0xff);
+
+ ret = devm_request_irq(mdev->dev, pdev->irq, mt7921_irq_handler,
+ IRQF_SHARED, KBUILD_MODNAME, dev);
+ if (ret)
+ goto err_free_dev;
+
+ ret = mt7921_register_device(dev);
+ if (ret)
+ goto err_free_dev;
+
+ return 0;
+
+err_free_dev:
+ mt76_free_device(&dev->mt76);
+err_free_pci_vec:
+ pci_free_irq_vectors(pdev);
+
+ return ret;
+}
+
+static void mt7921_pci_remove(struct pci_dev *pdev)
+{
+ struct mt76_dev *mdev = pci_get_drvdata(pdev);
+ struct mt7921_dev *dev = container_of(mdev, struct mt7921_dev, mt76);
+
+ mt7921_unregister_device(dev);
+ devm_free_irq(&pdev->dev, pdev->irq, dev);
+ pci_free_irq_vectors(pdev);
+}
+
+struct pci_driver mt7921_pci_driver = {
+ .name = KBUILD_MODNAME,
+ .id_table = mt7921_pci_device_table,
+ .probe = mt7921_pci_probe,
+ .remove = mt7921_pci_remove,
+};
+
+module_pci_driver(mt7921_pci_driver);
+
+MODULE_DEVICE_TABLE(pci, mt7921_pci_device_table);
+MODULE_FIRMWARE(MT7921_FIRMWARE_WM);
+MODULE_FIRMWARE(MT7921_ROM_PATCH);
+MODULE_AUTHOR("Sean Wang <[email protected]>");
+MODULE_AUTHOR("Lorenzo Bianconi <[email protected]>");
+MODULE_LICENSE("Dual BSD/GPL");
--
2.25.1