// SPDX-License-Identifier: ISC /* Copyright (C) 2020 MediaTek Inc. * */ #include #include #include #include "mt7921.h" #include "mac.h" #include "mcu.h" #include "../trace.h" static const struct pci_device_id mt7921_pci_device_table[] = { { PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x7961) }, { PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x7922) }, { PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x0608) }, { PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x0616) }, { }, }; static bool mt7921_disable_aspm; module_param_named(disable_aspm, mt7921_disable_aspm, bool, 0644); MODULE_PARM_DESC(disable_aspm, "disable PCI ASPM support"); 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; if (intr & MT_INT_MCU_CMD) { u32 intr_sw; intr_sw = mt76_rr(dev, MT_MCU_CMD); /* ack MCU2HOST_SW_INT_STA */ mt76_wr(dev, MT_MCU_CMD, intr_sw); if (intr_sw & MT_MCU_CMD_WAKE_RX_PCIE) { mask |= MT_INT_RX_DONE_DATA; intr |= MT_INT_RX_DONE_DATA; } } 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 mt7921e_init_reset(struct mt7921_dev *dev) { return mt7921_wpdma_reset(dev, true); } static void mt7921e_unregister_device(struct mt7921_dev *dev) { int i; struct mt76_connac_pm *pm = &dev->pm; mt76_unregister_device(&dev->mt76); mt76_for_each_q_rx(&dev->mt76, i) napi_disable(&dev->mt76.napi[i]); cancel_delayed_work_sync(&pm->ps_work); cancel_work_sync(&pm->wake_work); mt7921_tx_token_put(dev); mt7921_mcu_drv_pmctrl(dev); mt7921_dma_cleanup(dev); mt7921_wfsys_reset(dev); mt7921_mcu_exit(dev); tasklet_disable(&dev->irq_tasklet); mt76_free_device(&dev->mt76); } static u32 __mt7921_reg_addr(struct mt7921_dev *dev, u32 addr) { static const struct { u32 phys; u32 mapped; u32 size; } fixed_map[] = { { 0x820d0000, 0x30000, 0x10000 }, /* WF_LMAC_TOP (WF_WTBLON) */ { 0x820ed000, 0x24800, 0x0800 }, /* WF_LMAC_TOP BN0 (WF_MIB) */ { 0x820e4000, 0x21000, 0x0400 }, /* WF_LMAC_TOP BN0 (WF_TMAC) */ { 0x820e7000, 0x21e00, 0x0200 }, /* WF_LMAC_TOP BN0 (WF_DMA) */ { 0x820eb000, 0x24200, 0x0400 }, /* WF_LMAC_TOP BN0 (WF_LPON) */ { 0x820e2000, 0x20800, 0x0400 }, /* WF_LMAC_TOP BN0 (WF_AGG) */ { 0x820e3000, 0x20c00, 0x0400 }, /* WF_LMAC_TOP BN0 (WF_ARB) */ { 0x820e5000, 0x21400, 0x0800 }, /* WF_LMAC_TOP BN0 (WF_RMAC) */ { 0x00400000, 0x80000, 0x10000 }, /* WF_MCU_SYSRAM */ { 0x00410000, 0x90000, 0x10000 }, /* WF_MCU_SYSRAM (configure register) */ { 0x40000000, 0x70000, 0x10000 }, /* WF_UMAC_SYSRAM */ { 0x54000000, 0x02000, 0x1000 }, /* WFDMA PCIE0 MCU DMA0 */ { 0x55000000, 0x03000, 0x1000 }, /* WFDMA PCIE0 MCU DMA1 */ { 0x58000000, 0x06000, 0x1000 }, /* WFDMA PCIE1 MCU DMA0 (MEM_DMA) */ { 0x59000000, 0x07000, 0x1000 }, /* WFDMA PCIE1 MCU DMA1 */ { 0x7c000000, 0xf0000, 0x10000 }, /* CONN_INFRA */ { 0x7c020000, 0xd0000, 0x10000 }, /* CONN_INFRA, WFDMA */ { 0x7c060000, 0xe0000, 0x10000 }, /* CONN_INFRA, conn_host_csr_top */ { 0x80020000, 0xb0000, 0x10000 }, /* WF_TOP_MISC_OFF */ { 0x81020000, 0xc0000, 0x10000 }, /* WF_TOP_MISC_ON */ { 0x820c0000, 0x08000, 0x4000 }, /* WF_UMAC_TOP (PLE) */ { 0x820c8000, 0x0c000, 0x2000 }, /* WF_UMAC_TOP (PSE) */ { 0x820cc000, 0x0e000, 0x1000 }, /* WF_UMAC_TOP (PP) */ { 0x820cd000, 0x0f000, 0x1000 }, /* WF_MDP_TOP */ { 0x820ce000, 0x21c00, 0x0200 }, /* WF_LMAC_TOP (WF_SEC) */ { 0x820cf000, 0x22000, 0x1000 }, /* WF_LMAC_TOP (WF_PF) */ { 0x820e0000, 0x20000, 0x0400 }, /* WF_LMAC_TOP BN0 (WF_CFG) */ { 0x820e1000, 0x20400, 0x0200 }, /* WF_LMAC_TOP BN0 (WF_TRB) */ { 0x820e9000, 0x23400, 0x0200 }, /* WF_LMAC_TOP BN0 (WF_WTBLOFF) */ { 0x820ea000, 0x24000, 0x0200 }, /* WF_LMAC_TOP BN0 (WF_ETBF) */ { 0x820ec000, 0x24600, 0x0200 }, /* WF_LMAC_TOP BN0 (WF_INT) */ { 0x820f0000, 0xa0000, 0x0400 }, /* WF_LMAC_TOP BN1 (WF_CFG) */ { 0x820f1000, 0xa0600, 0x0200 }, /* WF_LMAC_TOP BN1 (WF_TRB) */ { 0x820f2000, 0xa0800, 0x0400 }, /* WF_LMAC_TOP BN1 (WF_AGG) */ { 0x820f3000, 0xa0c00, 0x0400 }, /* WF_LMAC_TOP BN1 (WF_ARB) */ { 0x820f4000, 0xa1000, 0x0400 }, /* WF_LMAC_TOP BN1 (WF_TMAC) */ { 0x820f5000, 0xa1400, 0x0800 }, /* WF_LMAC_TOP BN1 (WF_RMAC) */ { 0x820f7000, 0xa1e00, 0x0200 }, /* WF_LMAC_TOP BN1 (WF_DMA) */ { 0x820f9000, 0xa3400, 0x0200 }, /* WF_LMAC_TOP BN1 (WF_WTBLOFF) */ { 0x820fa000, 0xa4000, 0x0200 }, /* WF_LMAC_TOP BN1 (WF_ETBF) */ { 0x820fb000, 0xa4200, 0x0400 }, /* WF_LMAC_TOP BN1 (WF_LPON) */ { 0x820fc000, 0xa4600, 0x0200 }, /* WF_LMAC_TOP BN1 (WF_INT) */ { 0x820fd000, 0xa4800, 0x0800 }, /* WF_LMAC_TOP BN1 (WF_MIB) */ }; int i; if (addr < 0x100000) return addr; for (i = 0; i < ARRAY_SIZE(fixed_map); i++) { u32 ofs; if (addr < fixed_map[i].phys) continue; ofs = addr - fixed_map[i].phys; if (ofs > fixed_map[i].size) continue; return fixed_map[i].mapped + ofs; } if ((addr >= 0x18000000 && addr < 0x18c00000) || (addr >= 0x70000000 && addr < 0x78000000) || (addr >= 0x7c000000 && addr < 0x7c400000)) return mt7921_reg_map_l1(dev, addr); dev_err(dev->mt76.dev, "Access currently unsupported address %08x\n", addr); return 0; } static u32 mt7921_rr(struct mt76_dev *mdev, u32 offset) { struct mt7921_dev *dev = container_of(mdev, struct mt7921_dev, mt76); u32 addr = __mt7921_reg_addr(dev, offset); return dev->bus_ops->rr(mdev, addr); } static void mt7921_wr(struct mt76_dev *mdev, u32 offset, u32 val) { struct mt7921_dev *dev = container_of(mdev, struct mt7921_dev, mt76); u32 addr = __mt7921_reg_addr(dev, offset); dev->bus_ops->wr(mdev, addr, val); } static u32 mt7921_rmw(struct mt76_dev *mdev, u32 offset, u32 mask, u32 val) { struct mt7921_dev *dev = container_of(mdev, struct mt7921_dev, mt76); u32 addr = __mt7921_reg_addr(dev, offset); return dev->bus_ops->rmw(mdev, addr, mask, val); } 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, .survey_flags = SURVEY_INFO_TIME_TX | SURVEY_INFO_TIME_RX | SURVEY_INFO_TIME_BSS_RX, .token_size = MT7921_TOKEN_SIZE, .tx_prepare_skb = mt7921e_tx_prepare_skb, .tx_complete_skb = mt7921e_tx_complete_skb, .rx_check = mt7921e_rx_check, .rx_skb = mt7921e_queue_rx_skb, .rx_poll_complete = mt7921_rx_poll_complete, .sta_ps = mt7921_sta_ps, .sta_add = mt7921_mac_sta_add, .sta_assoc = mt7921_mac_sta_assoc, .sta_remove = mt7921_mac_sta_remove, .update_survey = mt7921_update_channel, }; static const struct mt7921_hif_ops mt7921_pcie_ops = { .init_reset = mt7921e_init_reset, .reset = mt7921e_mac_reset, .mcu_init = mt7921e_mcu_init, .drv_own = mt7921e_mcu_drv_pmctrl, .fw_own = mt7921e_mcu_fw_pmctrl, }; struct mt76_bus_ops *bus_ops; 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_ALL_TYPES); if (ret < 0) return ret; ret = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); if (ret) goto err_free_pci_vec; if (mt7921_disable_aspm) 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); dev->hif_ops = &mt7921_pcie_ops; mt76_mmio_init(&dev->mt76, pcim_iomap_table(pdev)[0]); tasklet_init(&dev->irq_tasklet, mt7921_irq_tasklet, (unsigned long)dev); dev->phy.dev = dev; dev->phy.mt76 = &dev->mt76.phy; dev->mt76.phy.priv = &dev->phy; dev->bus_ops = dev->mt76.bus; bus_ops = devm_kmemdup(dev->mt76.dev, dev->bus_ops, sizeof(*bus_ops), GFP_KERNEL); if (!bus_ops) return -ENOMEM; bus_ops->rr = mt7921_rr; bus_ops->wr = mt7921_wr; bus_ops->rmw = mt7921_rmw; dev->mt76.bus = bus_ops; ret = __mt7921e_mcu_drv_pmctrl(dev); if (ret) return ret; mdev->rev = (mt7921_l1_rr(dev, MT_HW_CHIPID) << 16) | (mt7921_l1_rr(dev, MT_HW_REV) & 0xff); dev_info(mdev->dev, "ASIC revision: %04x\n", mdev->rev); mt76_wr(dev, MT_WFDMA0_HOST_INT_ENA, 0); mt76_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_dma_init(dev); if (ret) goto err_free_irq; ret = mt7921_register_device(dev); if (ret) goto err_free_irq; return 0; err_free_irq: devm_free_irq(&pdev->dev, pdev->irq, dev); 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); mt7921e_unregister_device(dev); devm_free_irq(&pdev->dev, pdev->irq, dev); pci_free_irq_vectors(pdev); } #ifdef CONFIG_PM static int mt7921_pci_suspend(struct pci_dev *pdev, pm_message_t state) { struct mt76_dev *mdev = pci_get_drvdata(pdev); struct mt7921_dev *dev = container_of(mdev, struct mt7921_dev, mt76); struct mt76_connac_pm *pm = &dev->pm; int i, err; pm->suspended = true; cancel_delayed_work_sync(&pm->ps_work); cancel_work_sync(&pm->wake_work); err = mt7921_mcu_drv_pmctrl(dev); if (err < 0) goto restore_suspend; err = mt76_connac_mcu_set_hif_suspend(mdev, true); if (err) goto restore_suspend; /* always enable deep sleep during suspend to reduce * power consumption */ mt76_connac_mcu_set_deep_sleep(&dev->mt76, true); napi_disable(&mdev->tx_napi); mt76_worker_disable(&mdev->tx_worker); mt76_for_each_q_rx(mdev, i) { napi_disable(&mdev->napi[i]); } pci_enable_wake(pdev, pci_choose_state(pdev, state), true); /* wait until dma is idle */ mt76_poll(dev, MT_WFDMA0_GLO_CFG, MT_WFDMA0_GLO_CFG_TX_DMA_BUSY | MT_WFDMA0_GLO_CFG_RX_DMA_BUSY, 0, 1000); /* put dma disabled */ mt76_clear(dev, MT_WFDMA0_GLO_CFG, MT_WFDMA0_GLO_CFG_TX_DMA_EN | MT_WFDMA0_GLO_CFG_RX_DMA_EN); /* disable interrupt */ mt76_wr(dev, MT_WFDMA0_HOST_INT_ENA, 0); mt76_wr(dev, MT_PCIE_MAC_INT_ENABLE, 0x0); synchronize_irq(pdev->irq); tasklet_kill(&dev->irq_tasklet); err = mt7921_mcu_fw_pmctrl(dev); if (err) goto restore_napi; pci_save_state(pdev); err = pci_set_power_state(pdev, pci_choose_state(pdev, state)); if (err) goto restore_napi; return 0; restore_napi: mt76_for_each_q_rx(mdev, i) { napi_enable(&mdev->napi[i]); } napi_enable(&mdev->tx_napi); if (!pm->ds_enable) mt76_connac_mcu_set_deep_sleep(&dev->mt76, false); mt76_connac_mcu_set_hif_suspend(mdev, false); restore_suspend: pm->suspended = false; return err; } static int mt7921_pci_resume(struct pci_dev *pdev) { struct mt76_dev *mdev = pci_get_drvdata(pdev); struct mt7921_dev *dev = container_of(mdev, struct mt7921_dev, mt76); struct mt76_connac_pm *pm = &dev->pm; int i, err; err = pci_set_power_state(pdev, PCI_D0); if (err) return err; pci_restore_state(pdev); err = mt7921_mcu_drv_pmctrl(dev); if (err < 0) return err; mt7921_wpdma_reinit_cond(dev); /* enable interrupt */ mt76_wr(dev, MT_PCIE_MAC_INT_ENABLE, 0xff); mt7921_irq_enable(dev, MT_INT_RX_DONE_ALL | MT_INT_TX_DONE_ALL | MT_INT_MCU_CMD); mt76_set(dev, MT_MCU2HOST_SW_INT_ENA, MT_MCU_CMD_WAKE_RX_PCIE); /* put dma enabled */ mt76_set(dev, MT_WFDMA0_GLO_CFG, MT_WFDMA0_GLO_CFG_TX_DMA_EN | MT_WFDMA0_GLO_CFG_RX_DMA_EN); mt76_worker_enable(&mdev->tx_worker); local_bh_disable(); mt76_for_each_q_rx(mdev, i) { napi_enable(&mdev->napi[i]); napi_schedule(&mdev->napi[i]); } napi_enable(&mdev->tx_napi); napi_schedule(&mdev->tx_napi); local_bh_enable(); /* restore previous ds setting */ if (!pm->ds_enable) mt76_connac_mcu_set_deep_sleep(&dev->mt76, false); err = mt76_connac_mcu_set_hif_suspend(mdev, false); if (err) return err; pm->suspended = false; return err; } #endif /* CONFIG_PM */ struct pci_driver mt7921_pci_driver = { .name = KBUILD_MODNAME, .id_table = mt7921_pci_device_table, .probe = mt7921_pci_probe, .remove = mt7921_pci_remove, #ifdef CONFIG_PM .suspend = mt7921_pci_suspend, .resume = mt7921_pci_resume, #endif /* CONFIG_PM */ }; 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_FIRMWARE(MT7922_FIRMWARE_WM); MODULE_FIRMWARE(MT7922_ROM_PATCH); MODULE_AUTHOR("Sean Wang "); MODULE_AUTHOR("Lorenzo Bianconi "); MODULE_LICENSE("Dual BSD/GPL");