diff options
Diffstat (limited to 'drivers/net/wireless/mediatek/mt76/mt7615/pci.c')
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/mt7615/pci.c | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/pci.c b/drivers/net/wireless/mediatek/mt76/mt7615/pci.c new file mode 100644 index 000000000..dbd29d897 --- /dev/null +++ b/drivers/net/wireless/mediatek/mt76/mt7615/pci.c @@ -0,0 +1,199 @@ +// SPDX-License-Identifier: ISC +/* Copyright (C) 2019 MediaTek Inc. + * + * Author: Ryder Lee <ryder.lee@mediatek.com> + * Felix Fietkau <nbd@nbd.name> + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/pci.h> + +#include "mt7615.h" + +static const struct pci_device_id mt7615_pci_device_table[] = { + { PCI_DEVICE(0x14c3, 0x7615) }, + { PCI_DEVICE(0x14c3, 0x7663) }, + { PCI_DEVICE(0x14c3, 0x7611) }, + { }, +}; + +static int mt7615_pci_probe(struct pci_dev *pdev, + const struct pci_device_id *id) +{ + const u32 *map; + 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 = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); + if (ret) + goto error; + + mt76_pci_disable_aspm(pdev); + + map = id->device == 0x7663 ? mt7663e_reg_map : mt7615e_reg_map; + ret = mt7615_mmio_probe(&pdev->dev, pcim_iomap_table(pdev)[0], + pdev->irq, map); + if (ret) + goto error; + + return 0; +error: + pci_free_irq_vectors(pdev); + + return ret; +} + +static void mt7615_pci_remove(struct pci_dev *pdev) +{ + struct mt76_dev *mdev = pci_get_drvdata(pdev); + struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76); + + mt7615_unregister_device(dev); + devm_free_irq(&pdev->dev, pdev->irq, dev); + pci_free_irq_vectors(pdev); +} + +#ifdef CONFIG_PM +static int mt7615_pci_suspend(struct pci_dev *pdev, pm_message_t state) +{ + struct mt76_dev *mdev = pci_get_drvdata(pdev); + struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76); + bool hif_suspend; + int i, err; + + err = mt7615_pm_wake(dev); + if (err < 0) + return err; + + hif_suspend = !test_bit(MT76_STATE_SUSPEND, &dev->mphy.state) && + mt7615_firmware_offload(dev); + if (hif_suspend) { + err = mt7615_mcu_set_hif_suspend(dev, true); + if (err) + return err; + } + + napi_disable(&mdev->tx_napi); + mt76_worker_disable(&mdev->tx_worker); + + mt76_for_each_q_rx(mdev, i) { + napi_disable(&mdev->napi[i]); + } + tasklet_kill(&dev->irq_tasklet); + + mt7615_dma_reset(dev); + + err = mt7615_wait_pdma_busy(dev); + if (err) + goto restore; + + if (is_mt7663(mdev)) { + mt76_set(dev, MT_PDMA_SLP_PROT, MT_PDMA_AXI_SLPPROT_ENABLE); + if (!mt76_poll_msec(dev, MT_PDMA_SLP_PROT, + MT_PDMA_AXI_SLPPROT_RDY, + MT_PDMA_AXI_SLPPROT_RDY, 1000)) { + dev_err(mdev->dev, "PDMA sleep protection failed\n"); + err = -EIO; + goto restore; + } + } + + pci_enable_wake(pdev, pci_choose_state(pdev, state), true); + pci_save_state(pdev); + err = pci_set_power_state(pdev, pci_choose_state(pdev, state)); + if (err) + goto restore; + + err = mt7615_mcu_set_fw_ctrl(dev); + if (err) + goto restore; + + return 0; + +restore: + mt76_for_each_q_rx(mdev, i) { + napi_enable(&mdev->napi[i]); + } + napi_enable(&mdev->tx_napi); + if (hif_suspend) + mt7615_mcu_set_hif_suspend(dev, false); + + return err; +} + +static int mt7615_pci_resume(struct pci_dev *pdev) +{ + struct mt76_dev *mdev = pci_get_drvdata(pdev); + struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76); + bool pdma_reset; + int i, err; + + err = mt7615_mcu_set_drv_ctrl(dev); + if (err < 0) + return err; + + err = pci_set_power_state(pdev, PCI_D0); + if (err) + return err; + + pci_restore_state(pdev); + + if (is_mt7663(&dev->mt76)) { + mt76_clear(dev, MT_PDMA_SLP_PROT, MT_PDMA_AXI_SLPPROT_ENABLE); + mt76_wr(dev, MT_PCIE_IRQ_ENABLE, 1); + } + + pdma_reset = !mt76_rr(dev, MT_WPDMA_TX_RING0_CTRL0) && + !mt76_rr(dev, MT_WPDMA_TX_RING0_CTRL1); + if (pdma_reset) + dev_err(mdev->dev, "PDMA engine must be reinitialized\n"); + + mt76_worker_enable(&mdev->tx_worker); + 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); + + if (!test_bit(MT76_STATE_SUSPEND, &dev->mphy.state) && + mt7615_firmware_offload(dev)) + err = mt7615_mcu_set_hif_suspend(dev, false); + + return err; +} +#endif /* CONFIG_PM */ + +struct pci_driver mt7615_pci_driver = { + .name = KBUILD_MODNAME, + .id_table = mt7615_pci_device_table, + .probe = mt7615_pci_probe, + .remove = mt7615_pci_remove, +#ifdef CONFIG_PM + .suspend = mt7615_pci_suspend, + .resume = mt7615_pci_resume, +#endif /* CONFIG_PM */ +}; + +MODULE_DEVICE_TABLE(pci, mt7615_pci_device_table); +MODULE_FIRMWARE(MT7615_FIRMWARE_CR4); +MODULE_FIRMWARE(MT7615_FIRMWARE_N9); +MODULE_FIRMWARE(MT7615_ROM_PATCH); +MODULE_FIRMWARE(MT7663_OFFLOAD_FIRMWARE_N9); +MODULE_FIRMWARE(MT7663_OFFLOAD_ROM_PATCH); +MODULE_FIRMWARE(MT7663_FIRMWARE_N9); +MODULE_FIRMWARE(MT7663_ROM_PATCH); |