mt76/mt7615/pci.c

0001 // SPDX-License-Identifier: ISC
0002 /* Copyright (C) 2019 MediaTek Inc.
0003  *
0004  * Author: Ryder Lee <ryder.lee@mediatek.com>
0005  *         Felix Fietkau <nbd@nbd.name>
0006  */
0007
0008 #include <linux/kernel.h>
0009 #include <linux/module.h>
0010 #include <linux/pci.h>
0011
0012 #include "mt7615.h"
0013 #include "mcu.h"
0014
0015 static const struct pci_device_id mt7615_pci_device_table[] = {
0016     { PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x7615) },
0017     { PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x7663) },
0018     { PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x7611) },
0019     { },
0020 };
0021
0022 static int mt7615_pci_probe(struct pci_dev *pdev,
0023                 const struct pci_device_id *id)
0024 {
0025     const u32 *map;
0026     int ret;
0027
0028     ret = pcim_enable_device(pdev);
0029     if (ret)
0030         return ret;
0031
0032     ret = pcim_iomap_regions(pdev, BIT(0), pci_name(pdev));
0033     if (ret)
0034         return ret;
0035
0036     pci_set_master(pdev);
0037
0038     ret = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_ALL_TYPES);
0039     if (ret < 0)
0040         return ret;
0041
0042     ret = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
0043     if (ret)
0044         goto error;
0045
0046     mt76_pci_disable_aspm(pdev);
0047
0048     map = id->device == 0x7663 ? mt7663e_reg_map : mt7615e_reg_map;
0049     ret = mt7615_mmio_probe(&pdev->dev, pcim_iomap_table(pdev)[0],
0050                 pdev->irq, map);
0051     if (ret)
0052         goto error;
0053
0054     return 0;
0055 error:
0056     pci_free_irq_vectors(pdev);
0057
0058     return ret;
0059 }
0060
0061 static void mt7615_pci_remove(struct pci_dev *pdev)
0062 {
0063     struct mt76_dev *mdev = pci_get_drvdata(pdev);
0064     struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76);
0065
0066     mt7615_unregister_device(dev);
0067     devm_free_irq(&pdev->dev, pdev->irq, dev);
0068     pci_free_irq_vectors(pdev);
0069 }
0070
0071 #ifdef CONFIG_PM
0072 static int mt7615_pci_suspend(struct pci_dev *pdev, pm_message_t state)
0073 {
0074     struct mt76_dev *mdev = pci_get_drvdata(pdev);
0075     struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76);
0076     bool hif_suspend;
0077     int i, err;
0078
0079     err = mt76_connac_pm_wake(&dev->mphy, &dev->pm);
0080     if (err < 0)
0081         return err;
0082
0083     hif_suspend = !test_bit(MT76_STATE_SUSPEND, &dev->mphy.state) &&
0084               mt7615_firmware_offload(dev);
0085     if (hif_suspend) {
0086         err = mt76_connac_mcu_set_hif_suspend(mdev, true);
0087         if (err)
0088             return err;
0089     }
0090
0091     napi_disable(&mdev->tx_napi);
0092     mt76_worker_disable(&mdev->tx_worker);
0093
0094     mt76_for_each_q_rx(mdev, i) {
0095         napi_disable(&mdev->napi[i]);
0096     }
0097     tasklet_kill(&dev->irq_tasklet);
0098
0099     mt7615_dma_reset(dev);
0100
0101     err = mt7615_wait_pdma_busy(dev);
0102     if (err)
0103         goto restore;
0104
0105     if (is_mt7663(mdev)) {
0106         mt76_set(dev, MT_PDMA_SLP_PROT, MT_PDMA_AXI_SLPPROT_ENABLE);
0107         if (!mt76_poll_msec(dev, MT_PDMA_SLP_PROT,
0108                     MT_PDMA_AXI_SLPPROT_RDY,
0109                     MT_PDMA_AXI_SLPPROT_RDY, 1000)) {
0110             dev_err(mdev->dev, "PDMA sleep protection failed\n");
0111             err = -EIO;
0112             goto restore;
0113         }
0114     }
0115
0116     pci_enable_wake(pdev, pci_choose_state(pdev, state), true);
0117     pci_save_state(pdev);
0118     err = pci_set_power_state(pdev, pci_choose_state(pdev, state));
0119     if (err)
0120         goto restore;
0121
0122     err = mt7615_mcu_set_fw_ctrl(dev);
0123     if (err)
0124         goto restore;
0125
0126     return 0;
0127
0128 restore:
0129     mt76_for_each_q_rx(mdev, i) {
0130         napi_enable(&mdev->napi[i]);
0131     }
0132     napi_enable(&mdev->tx_napi);
0133     if (hif_suspend)
0134         mt76_connac_mcu_set_hif_suspend(mdev, false);
0135
0136     return err;
0137 }
0138
0139 static int mt7615_pci_resume(struct pci_dev *pdev)
0140 {
0141     struct mt76_dev *mdev = pci_get_drvdata(pdev);
0142     struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76);
0143     bool pdma_reset;
0144     int i, err;
0145
0146     err = mt7615_mcu_set_drv_ctrl(dev);
0147     if (err < 0)
0148         return err;
0149
0150     err = pci_set_power_state(pdev, PCI_D0);
0151     if (err)
0152         return err;
0153
0154     pci_restore_state(pdev);
0155
0156     if (is_mt7663(&dev->mt76)) {
0157         mt76_clear(dev, MT_PDMA_SLP_PROT, MT_PDMA_AXI_SLPPROT_ENABLE);
0158         mt76_wr(dev, MT_PCIE_IRQ_ENABLE, 1);
0159     }
0160
0161     pdma_reset = !mt76_rr(dev, MT_WPDMA_TX_RING0_CTRL0) &&
0162              !mt76_rr(dev, MT_WPDMA_TX_RING0_CTRL1);
0163     if (pdma_reset)
0164         dev_err(mdev->dev, "PDMA engine must be reinitialized\n");
0165
0166     mt76_worker_enable(&mdev->tx_worker);
0167     local_bh_disable();
0168     mt76_for_each_q_rx(mdev, i) {
0169         napi_enable(&mdev->napi[i]);
0170         napi_schedule(&mdev->napi[i]);
0171     }
0172     napi_enable(&mdev->tx_napi);
0173     napi_schedule(&mdev->tx_napi);
0174     local_bh_enable();
0175
0176     if (!test_bit(MT76_STATE_SUSPEND, &dev->mphy.state) &&
0177         mt7615_firmware_offload(dev))
0178         err = mt76_connac_mcu_set_hif_suspend(mdev, false);
0179
0180     return err;
0181 }
0182 #endif /* CONFIG_PM */
0183
0184 struct pci_driver mt7615_pci_driver = {
0185     .name       = KBUILD_MODNAME,
0186     .id_table   = mt7615_pci_device_table,
0187     .probe      = mt7615_pci_probe,
0188     .remove     = mt7615_pci_remove,
0189 #ifdef CONFIG_PM
0190     .suspend    = mt7615_pci_suspend,
0191     .resume     = mt7615_pci_resume,
0192 #endif /* CONFIG_PM */
0193 };
0194
0195 MODULE_DEVICE_TABLE(pci, mt7615_pci_device_table);
0196 MODULE_FIRMWARE(MT7615_FIRMWARE_CR4);
0197 MODULE_FIRMWARE(MT7615_FIRMWARE_N9);
0198 MODULE_FIRMWARE(MT7615_ROM_PATCH);
0199 MODULE_FIRMWARE(MT7663_OFFLOAD_FIRMWARE_N9);
0200 MODULE_FIRMWARE(MT7663_OFFLOAD_ROM_PATCH);
0201 MODULE_FIRMWARE(MT7663_FIRMWARE_N9);
0202 MODULE_FIRMWARE(MT7663_ROM_PATCH);