From 08f116c9ea6dfddf2a9649a10032902a4d72f6da Mon Sep 17 00:00:00 2001 From: Breno Leitao Date: Wed, 19 Jun 2024 03:52:36 -0700 Subject: wifi: mt76: un-embedd netdev from mt76_dev Embedding net_device into structures prohibits the usage of flexible arrays in the net_device structure. For more details, see the discussion at [1]. Un-embed the net_devices from struct mt76_dev by converting them into pointers, and allocating them dynamically. Use the leverage alloc_netdev_dummy() to allocate the net_device object at mt76_dma_init(). The free of the device occurs at mt76_dma_cleanup(). Link: https://lore.kernel.org/all/20240229225910.79e224cf@kernel.org/ [1] Reviewed-by: Simon Horman Signed-off-by: Breno Leitao Acked-by: Kalle Valo Link: https://patch.msgid.link/20240619105311.3144908-1-leitao@debian.org Signed-off-by: Jakub Kicinski --- drivers/net/wireless/mediatek/mt76/mt7925/pci.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/net/wireless/mediatek/mt76/mt7925/pci.c') diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/pci.c b/drivers/net/wireless/mediatek/mt76/mt7925/pci.c index 07b74d492ce1..577574fb7a1e 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7925/pci.c +++ b/drivers/net/wireless/mediatek/mt76/mt7925/pci.c @@ -254,7 +254,7 @@ static int mt7925_dma_init(struct mt792x_dev *dev) if (ret < 0) return ret; - netif_napi_add_tx(&dev->mt76.tx_napi_dev, &dev->mt76.tx_napi, + netif_napi_add_tx(dev->mt76.tx_napi_dev, &dev->mt76.tx_napi, mt792x_poll_tx); napi_enable(&dev->mt76.tx_napi); -- cgit v1.2.3-58-ga151 From d53ab629cff57e450fe69fc90eb1ddc372e8da2d Mon Sep 17 00:00:00 2001 From: Michael Lo Date: Thu, 23 May 2024 19:21:31 +0800 Subject: wifi: mt76: mt792x: fix scheduler interference in drv own process Add some time to wait for LP engine to complete its operation before polling pmctrl register. Signed-off-by: Michael Lo Signed-off-by: Ming Yen Hsieh Tested-by: David Ruth Acked-by: Sean Wang Link: https://patch.msgid.link/20240523112131.31437-1-mingyen.hsieh@mediatek.com Signed-off-by: Felix Fietkau --- drivers/net/wireless/mediatek/mt76/mt76.h | 1 + drivers/net/wireless/mediatek/mt76/mt7921/pci.c | 3 +++ drivers/net/wireless/mediatek/mt76/mt7925/pci.c | 3 +++ drivers/net/wireless/mediatek/mt76/mt792x.h | 1 + drivers/net/wireless/mediatek/mt76/mt792x_core.c | 4 ++++ drivers/net/wireless/mediatek/mt76/pci.c | 23 +++++++++++++++++++++++ 6 files changed, 35 insertions(+) (limited to 'drivers/net/wireless/mediatek/mt76/mt7925/pci.c') diff --git a/drivers/net/wireless/mediatek/mt76/mt76.h b/drivers/net/wireless/mediatek/mt76/mt76.h index 5f8773364d51..4a58a78d5ed2 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76.h +++ b/drivers/net/wireless/mediatek/mt76/mt76.h @@ -1085,6 +1085,7 @@ bool ____mt76_poll_msec(struct mt76_dev *dev, u32 offset, u32 mask, u32 val, void mt76_mmio_init(struct mt76_dev *dev, void __iomem *regs); void mt76_pci_disable_aspm(struct pci_dev *pdev); +bool mt76_pci_aspm_supported(struct pci_dev *pdev); static inline u16 mt76_chip(struct mt76_dev *dev) { diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/pci.c b/drivers/net/wireless/mediatek/mt76/mt7921/pci.c index e75e7b6d3aaf..a7430216a80d 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7921/pci.c +++ b/drivers/net/wireless/mediatek/mt76/mt7921/pci.c @@ -339,6 +339,9 @@ static int mt7921_pci_probe(struct pci_dev *pdev, bus_ops->rmw = mt7921_rmw; dev->mt76.bus = bus_ops; + if (!mt7921_disable_aspm && mt76_pci_aspm_supported(pdev)) + dev->aspm_supported = true; + ret = mt792xe_mcu_fw_pmctrl(dev); if (ret) goto err_free_dev; diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/pci.c b/drivers/net/wireless/mediatek/mt76/mt7925/pci.c index 577574fb7a1e..6e4f4e78c350 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7925/pci.c +++ b/drivers/net/wireless/mediatek/mt76/mt7925/pci.c @@ -373,6 +373,9 @@ static int mt7925_pci_probe(struct pci_dev *pdev, bus_ops->rmw = mt7925_rmw; dev->mt76.bus = bus_ops; + if (!mt7925_disable_aspm && mt76_pci_aspm_supported(pdev)) + dev->aspm_supported = true; + ret = __mt792x_mcu_fw_pmctrl(dev); if (ret) goto err_free_dev; diff --git a/drivers/net/wireless/mediatek/mt76/mt792x.h b/drivers/net/wireless/mediatek/mt76/mt792x.h index 30635aeba363..7fa74d59cc48 100644 --- a/drivers/net/wireless/mediatek/mt76/mt792x.h +++ b/drivers/net/wireless/mediatek/mt76/mt792x.h @@ -215,6 +215,7 @@ struct mt792x_dev { bool fw_assert:1; bool has_eht:1; bool regd_in_progress:1; + bool aspm_supported:1; wait_queue_head_t wait; struct work_struct init_work; diff --git a/drivers/net/wireless/mediatek/mt76/mt792x_core.c b/drivers/net/wireless/mediatek/mt76/mt792x_core.c index ae2ac146a7f7..78fe37c2e07b 100644 --- a/drivers/net/wireless/mediatek/mt76/mt792x_core.c +++ b/drivers/net/wireless/mediatek/mt76/mt792x_core.c @@ -809,6 +809,10 @@ int __mt792xe_mcu_drv_pmctrl(struct mt792x_dev *dev) for (i = 0; i < MT792x_DRV_OWN_RETRY_COUNT; i++) { mt76_wr(dev, MT_CONN_ON_LPCTL, PCIE_LPCR_HOST_CLR_OWN); + + if (dev->aspm_supported) + usleep_range(2000, 3000); + if (mt76_poll_msec_tick(dev, MT_CONN_ON_LPCTL, PCIE_LPCR_HOST_OWN_SYNC, 0, 50, 1)) break; diff --git a/drivers/net/wireless/mediatek/mt76/pci.c b/drivers/net/wireless/mediatek/mt76/pci.c index 4c1c159fbb62..b5031ca7f73f 100644 --- a/drivers/net/wireless/mediatek/mt76/pci.c +++ b/drivers/net/wireless/mediatek/mt76/pci.c @@ -45,3 +45,26 @@ void mt76_pci_disable_aspm(struct pci_dev *pdev) aspm_conf); } EXPORT_SYMBOL_GPL(mt76_pci_disable_aspm); + +bool mt76_pci_aspm_supported(struct pci_dev *pdev) +{ + struct pci_dev *parent = pdev->bus->self; + u16 aspm_conf, parent_aspm_conf = 0; + bool result = true; + + pcie_capability_read_word(pdev, PCI_EXP_LNKCTL, &aspm_conf); + aspm_conf &= PCI_EXP_LNKCTL_ASPMC; + if (parent) { + pcie_capability_read_word(parent, PCI_EXP_LNKCTL, + &parent_aspm_conf); + parent_aspm_conf &= PCI_EXP_LNKCTL_ASPMC; + } + + if (!aspm_conf && (!parent || !parent_aspm_conf)) { + /* aspm already disabled */ + result = false; + } + + return result; +} +EXPORT_SYMBOL_GPL(mt76_pci_aspm_supported); -- cgit v1.2.3-58-ga151