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// SPDX-License-Identifier: ISC
/*
* Copyright (C) 2022 MediaTek Inc.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/pci.h>
#include "mt7996.h"
#include "mac.h"
#include "../trace.h"
static LIST_HEAD(hif_list);
static DEFINE_SPINLOCK(hif_lock);
static u32 hif_idx;
static const struct pci_device_id mt7996_pci_device_table[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x7990) },
{ },
};
static const struct pci_device_id mt7996_hif_device_table[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x7991) },
{ },
};
static struct mt7996_hif *mt7996_pci_get_hif2(u32 idx)
{
struct mt7996_hif *hif;
u32 val;
spin_lock_bh(&hif_lock);
list_for_each_entry(hif, &hif_list, list) {
val = readl(hif->regs + MT_PCIE_RECOG_ID);
val &= MT_PCIE_RECOG_ID_MASK;
if (val != idx)
continue;
get_device(hif->dev);
goto out;
}
hif = NULL;
out:
spin_unlock_bh(&hif_lock);
return hif;
}
static void mt7996_put_hif2(struct mt7996_hif *hif)
{
if (!hif)
return;
put_device(hif->dev);
}
static struct mt7996_hif *mt7996_pci_init_hif2(struct pci_dev *pdev)
{
hif_idx++;
if (!pci_get_device(PCI_VENDOR_ID_MEDIATEK, 0x7991, NULL))
return NULL;
writel(hif_idx | MT_PCIE_RECOG_ID_SEM,
pcim_iomap_table(pdev)[0] + MT_PCIE_RECOG_ID);
return mt7996_pci_get_hif2(hif_idx);
}
static int mt7996_pci_hif2_probe(struct pci_dev *pdev)
{
struct mt7996_hif *hif;
hif = devm_kzalloc(&pdev->dev, sizeof(*hif), GFP_KERNEL);
if (!hif)
return -ENOMEM;
hif->dev = &pdev->dev;
hif->regs = pcim_iomap_table(pdev)[0];
hif->irq = pdev->irq;
spin_lock_bh(&hif_lock);
list_add(&hif->list, &hif_list);
spin_unlock_bh(&hif_lock);
pci_set_drvdata(pdev, hif);
return 0;
}
static int mt7996_pci_probe(struct pci_dev *pdev,
const struct pci_device_id *id)
{
struct pci_dev *hif2_dev;
struct mt7996_hif *hif2;
struct mt7996_dev *dev;
int irq, hif2_irq, ret;
struct mt76_dev *mdev;
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 = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
if (ret)
return ret;
mt76_pci_disable_aspm(pdev);
if (id->device == 0x7991)
return mt7996_pci_hif2_probe(pdev);
dev = mt7996_mmio_probe(&pdev->dev, pcim_iomap_table(pdev)[0],
id->device);
if (IS_ERR(dev))
return PTR_ERR(dev);
mdev = &dev->mt76;
mt7996_wfsys_reset(dev);
hif2 = mt7996_pci_init_hif2(pdev);
ret = mt7996_mmio_wed_init(dev, pdev, false, &irq);
if (ret < 0)
goto free_wed_or_irq_vector;
if (!ret) {
ret = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_ALL_TYPES);
if (ret < 0)
goto free_device;
irq = pdev->irq;
}
ret = devm_request_irq(mdev->dev, irq, mt7996_irq_handler,
IRQF_SHARED, KBUILD_MODNAME, dev);
if (ret)
goto free_wed_or_irq_vector;
mt76_wr(dev, MT_INT_MASK_CSR, 0);
/* master switch of PCIe tnterrupt enable */
mt76_wr(dev, MT_PCIE_MAC_INT_ENABLE, 0xff);
if (hif2) {
hif2_dev = container_of(hif2->dev, struct pci_dev, dev);
dev->hif2 = hif2;
ret = mt7996_mmio_wed_init(dev, hif2_dev, true, &hif2_irq);
if (ret < 0)
goto free_hif2_wed_irq_vector;
if (!ret) {
ret = pci_alloc_irq_vectors(hif2_dev, 1, 1,
PCI_IRQ_ALL_TYPES);
if (ret < 0)
goto free_hif2;
dev->hif2->irq = hif2_dev->irq;
hif2_irq = dev->hif2->irq;
}
ret = devm_request_irq(mdev->dev, hif2_irq, mt7996_irq_handler,
IRQF_SHARED, KBUILD_MODNAME "-hif",
dev);
if (ret)
goto free_hif2_wed_irq_vector;
mt76_wr(dev, MT_INT1_MASK_CSR, 0);
/* master switch of PCIe tnterrupt enable */
mt76_wr(dev, MT_PCIE1_MAC_INT_ENABLE, 0xff);
}
ret = mt7996_register_device(dev);
if (ret)
goto free_hif2_irq;
return 0;
free_hif2_irq:
if (dev->hif2)
devm_free_irq(mdev->dev, hif2_irq, dev);
free_hif2_wed_irq_vector:
if (dev->hif2) {
if (mtk_wed_device_active(&dev->mt76.mmio.wed_hif2))
mtk_wed_device_detach(&dev->mt76.mmio.wed_hif2);
else
pci_free_irq_vectors(hif2_dev);
}
free_hif2:
if (dev->hif2)
put_device(dev->hif2->dev);
devm_free_irq(mdev->dev, irq, dev);
free_wed_or_irq_vector:
if (mtk_wed_device_active(&dev->mt76.mmio.wed))
mtk_wed_device_detach(&dev->mt76.mmio.wed);
else
pci_free_irq_vectors(pdev);
free_device:
mt76_free_device(&dev->mt76);
return ret;
}
static void mt7996_hif_remove(struct pci_dev *pdev)
{
struct mt7996_hif *hif = pci_get_drvdata(pdev);
list_del(&hif->list);
}
static void mt7996_pci_remove(struct pci_dev *pdev)
{
struct mt76_dev *mdev;
struct mt7996_dev *dev;
mdev = pci_get_drvdata(pdev);
dev = container_of(mdev, struct mt7996_dev, mt76);
mt7996_put_hif2(dev->hif2);
mt7996_unregister_device(dev);
}
struct pci_driver mt7996_hif_driver = {
.name = KBUILD_MODNAME "_hif",
.id_table = mt7996_hif_device_table,
.probe = mt7996_pci_probe,
.remove = mt7996_hif_remove,
};
struct pci_driver mt7996_pci_driver = {
.name = KBUILD_MODNAME,
.id_table = mt7996_pci_device_table,
.probe = mt7996_pci_probe,
.remove = mt7996_pci_remove,
};
MODULE_DEVICE_TABLE(pci, mt7996_pci_device_table);
MODULE_DEVICE_TABLE(pci, mt7996_hif_device_table);
MODULE_FIRMWARE(MT7996_FIRMWARE_WA);
MODULE_FIRMWARE(MT7996_FIRMWARE_WM);
MODULE_FIRMWARE(MT7996_FIRMWARE_DSP);
MODULE_FIRMWARE(MT7996_ROM_PATCH);
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