// SPDX-License-Identifier: ISC /* Copyright (C) 2020 MediaTek Inc. * * Author: Ryder Lee <ryder.lee@mediatek.com> */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/pci.h> #include "mt7915.h" #include "mac.h" #include "../trace.h" static const struct pci_device_id mt7915_pci_device_table[] = { { PCI_DEVICE(0x14c3, 0x7915) }, { }, }; static void mt7915_rx_poll_complete(struct mt76_dev *mdev, enum mt76_rxq_id q) { struct mt7915_dev *dev = container_of(mdev, struct mt7915_dev, mt76); mt7915_irq_enable(dev, MT_INT_RX_DONE(q)); } /* TODO: support 2/4/6/8 MSI-X vectors */ static irqreturn_t mt7915_irq_handler(int irq, void *dev_instance) { struct mt7915_dev *dev = dev_instance; u32 intr; intr = mt76_rr(dev, MT_INT_SOURCE_CSR); mt76_wr(dev, MT_INT_SOURCE_CSR, intr); if (!test_bit(MT76_STATE_INITIALIZED, &dev->mphy.state)) return IRQ_NONE; trace_dev_irq(&dev->mt76, intr, dev->mt76.mmio.irqmask); intr &= dev->mt76.mmio.irqmask; if (intr & MT_INT_TX_DONE_ALL) { mt7915_irq_disable(dev, MT_INT_TX_DONE_ALL); napi_schedule(&dev->mt76.tx_napi); } if (intr & MT_INT_RX_DONE_DATA) { mt7915_irq_disable(dev, MT_INT_RX_DONE_DATA); napi_schedule(&dev->mt76.napi[0]); } if (intr & MT_INT_RX_DONE_WM) { mt7915_irq_disable(dev, MT_INT_RX_DONE_WM); napi_schedule(&dev->mt76.napi[1]); } if (intr & MT_INT_RX_DONE_WA) { mt7915_irq_disable(dev, MT_INT_RX_DONE_WA); napi_schedule(&dev->mt76.napi[2]); } if (intr & MT_INT_MCU_CMD) { u32 val = mt76_rr(dev, MT_MCU_CMD); mt76_wr(dev, MT_MCU_CMD, val); if (val & MT_MCU_CMD_ERROR_MASK) { dev->reset_state = val; ieee80211_queue_work(mt76_hw(dev), &dev->reset_work); wake_up(&dev->reset_wait); } } return IRQ_HANDLED; } static int mt7915_alloc_device(struct pci_dev *pdev, struct mt7915_dev *dev) { #define NUM_BANDS 2 int i; s8 **sku; sku = devm_kzalloc(&pdev->dev, NUM_BANDS * sizeof(*sku), GFP_KERNEL); if (!sku) return -ENOMEM; for (i = 0; i < NUM_BANDS; i++) { sku[i] = devm_kzalloc(&pdev->dev, MT7915_SKU_TABLE_SIZE * sizeof(**sku), GFP_KERNEL); if (!sku[i]) return -ENOMEM; } dev->rate_power = sku; return 0; } static int mt7915_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 mt7915_txp), .drv_flags = MT_DRV_TXWI_NO_FREE, .survey_flags = SURVEY_INFO_TIME_TX | SURVEY_INFO_TIME_RX | SURVEY_INFO_TIME_BSS_RX, .tx_prepare_skb = mt7915_tx_prepare_skb, .tx_complete_skb = mt7915_tx_complete_skb, .rx_skb = mt7915_queue_rx_skb, .rx_poll_complete = mt7915_rx_poll_complete, .sta_ps = mt7915_sta_ps, .sta_add = mt7915_mac_sta_add, .sta_remove = mt7915_mac_sta_remove, .update_survey = mt7915_update_channel, }; struct mt7915_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_set_dma_mask(pdev, DMA_BIT_MASK(32)); if (ret) return ret; mdev = mt76_alloc_device(&pdev->dev, sizeof(*dev), &mt7915_ops, &drv_ops); if (!mdev) return -ENOMEM; dev = container_of(mdev, struct mt7915_dev, mt76); ret = mt7915_alloc_device(pdev, dev); if (ret) return ret; mt76_mmio_init(&dev->mt76, pcim_iomap_table(pdev)[0]); mdev->rev = (mt7915_l1_rr(dev, MT_HW_CHIPID) << 16) | (mt7915_l1_rr(dev, MT_HW_REV) & 0xff); dev_dbg(mdev->dev, "ASIC revision: %04x\n", mdev->rev); /* master switch of PCIe tnterrupt enable */ mt7915_l1_wr(dev, MT_PCIE_MAC_INT_ENABLE, 0xff); ret = devm_request_irq(mdev->dev, pdev->irq, mt7915_irq_handler, IRQF_SHARED, KBUILD_MODNAME, dev); if (ret) goto error; ret = mt7915_register_device(dev); if (ret) goto error; return 0; error: ieee80211_free_hw(mt76_hw(dev)); return ret; } static void mt7915_pci_remove(struct pci_dev *pdev) { struct mt76_dev *mdev = pci_get_drvdata(pdev); struct mt7915_dev *dev = container_of(mdev, struct mt7915_dev, mt76); mt7915_unregister_device(dev); } struct pci_driver mt7915_pci_driver = { .name = KBUILD_MODNAME, .id_table = mt7915_pci_device_table, .probe = mt7915_pci_probe, .remove = mt7915_pci_remove, }; module_pci_driver(mt7915_pci_driver); MODULE_DEVICE_TABLE(pci, mt7915_pci_device_table); MODULE_FIRMWARE(MT7915_FIRMWARE_WA); MODULE_FIRMWARE(MT7915_FIRMWARE_WM); MODULE_FIRMWARE(MT7915_ROM_PATCH); MODULE_LICENSE("Dual BSD/GPL");