diff options
Diffstat (limited to 'drivers/net/wireless/mediatek/mt76/mt7915/pci.c')
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/mt7915/pci.c | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/pci.c b/drivers/net/wireless/mediatek/mt76/mt7915/pci.c new file mode 100644 index 000000000000..7937c6965f59 --- /dev/null +++ b/drivers/net/wireless/mediatek/mt76/mt7915/pci.c @@ -0,0 +1,191 @@ +// 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"); |