Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 332 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 000000000..3808ce164
--- /dev/null
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/pci.c
@@ -0,0 +1,332 @@
+// 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 bool wed_enable = false;
+module_param(wed_enable, bool, 0644);
+
+static LIST_HEAD(hif_list);
+static DEFINE_SPINLOCK(hif_lock);
+static u32 hif_idx;
+
+static const struct pci_device_id mt7915_pci_device_table[] = {
+	{ PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x7915) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x7906) },
+	{ },
+};
+
+static const struct pci_device_id mt7915_hif_device_table[] = {
+	{ PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x7916) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_MEDIATEK, 0x790a) },
+	{ },
+};
+
+static struct mt7915_hif *mt7915_pci_get_hif2(u32 idx)
+{
+	struct mt7915_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 mt7915_put_hif2(struct mt7915_hif *hif)
+{
+	if (!hif)
+		return;
+
+	put_device(hif->dev);
+}
+
+static struct mt7915_hif *mt7915_pci_init_hif2(struct pci_dev *pdev)
+{
+	struct pci_dev *tmp_pdev;
+
+	hif_idx++;
+
+	tmp_pdev = pci_get_device(PCI_VENDOR_ID_MEDIATEK, 0x7916, NULL);
+	if (!tmp_pdev) {
+		tmp_pdev = pci_get_device(PCI_VENDOR_ID_MEDIATEK, 0x790a, NULL);
+		if (!tmp_pdev)
+			return NULL;
+	}
+	pci_dev_put(tmp_pdev);
+
+	writel(hif_idx | MT_PCIE_RECOG_ID_SEM,
+	       pcim_iomap_table(pdev)[0] + MT_PCIE_RECOG_ID);
+
+	return mt7915_pci_get_hif2(hif_idx);
+}
+
+static int mt7915_pci_hif2_probe(struct pci_dev *pdev)
+{
+	struct mt7915_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;
+}
+
+#ifdef CONFIG_NET_MEDIATEK_SOC_WED
+static int mt7915_wed_offload_enable(struct mtk_wed_device *wed)
+{
+	struct mt7915_dev *dev;
+	struct mt7915_phy *phy;
+	int ret;
+
+	dev = container_of(wed, struct mt7915_dev, mt76.mmio.wed);
+
+	spin_lock_bh(&dev->mt76.token_lock);
+	dev->mt76.token_size = wed->wlan.token_start;
+	spin_unlock_bh(&dev->mt76.token_lock);
+
+	ret = wait_event_timeout(dev->mt76.tx_wait,
+				 !dev->mt76.wed_token_count, HZ);
+	if (!ret)
+		return -EAGAIN;
+
+	phy = &dev->phy;
+	mt76_set(dev, MT_AGG_ACR4(phy->band_idx), MT_AGG_ACR_PPDU_TXS2H);
+
+	phy = dev->mt76.phys[MT_BAND1] ? dev->mt76.phys[MT_BAND1]->priv : NULL;
+	if (phy)
+		mt76_set(dev, MT_AGG_ACR4(phy->band_idx),
+			 MT_AGG_ACR_PPDU_TXS2H);
+
+	return 0;
+}
+
+static void mt7915_wed_offload_disable(struct mtk_wed_device *wed)
+{
+	struct mt7915_dev *dev;
+	struct mt7915_phy *phy;
+
+	dev = container_of(wed, struct mt7915_dev, mt76.mmio.wed);
+
+	spin_lock_bh(&dev->mt76.token_lock);
+	dev->mt76.token_size = MT7915_TOKEN_SIZE;
+	spin_unlock_bh(&dev->mt76.token_lock);
+
+	/* MT_TXD5_TX_STATUS_HOST (MPDU format) has higher priority than
+	 * MT_AGG_ACR_PPDU_TXS2H (PPDU format) even though ACR bit is set.
+	 */
+	phy = &dev->phy;
+	mt76_clear(dev, MT_AGG_ACR4(phy->band_idx), MT_AGG_ACR_PPDU_TXS2H);
+
+	phy = dev->mt76.phys[MT_BAND1] ? dev->mt76.phys[MT_BAND1]->priv : NULL;
+	if (phy)
+		mt76_clear(dev, MT_AGG_ACR4(phy->band_idx),
+			   MT_AGG_ACR_PPDU_TXS2H);
+}
+#endif
+
+static int
+mt7915_pci_wed_init(struct mt7915_dev *dev, struct pci_dev *pdev, int *irq)
+{
+#ifdef CONFIG_NET_MEDIATEK_SOC_WED
+	struct mtk_wed_device *wed = &dev->mt76.mmio.wed;
+	int ret;
+
+	if (!wed_enable)
+		return 0;
+
+	wed->wlan.pci_dev = pdev;
+	wed->wlan.wpdma_phys = pci_resource_start(pdev, 0) +
+			       MT_WFDMA_EXT_CSR_BASE;
+	wed->wlan.nbuf = 4096;
+	wed->wlan.token_start = MT7915_TOKEN_SIZE - wed->wlan.nbuf;
+	wed->wlan.init_buf = mt7915_wed_init_buf;
+	wed->wlan.offload_enable = mt7915_wed_offload_enable;
+	wed->wlan.offload_disable = mt7915_wed_offload_disable;
+
+	if (mtk_wed_device_attach(wed) != 0)
+		return 0;
+
+	*irq = wed->irq;
+	dev->mt76.dma_dev = wed->dev;
+
+	ret = dma_set_mask(wed->dev, DMA_BIT_MASK(32));
+	if (ret)
+		return ret;
+
+	return 1;
+#else
+	return 0;
+#endif
+}
+
+static int mt7915_pci_probe(struct pci_dev *pdev,
+			    const struct pci_device_id *id)
+{
+	struct mt7915_hif *hif2 = NULL;
+	struct mt7915_dev *dev;
+	struct mt76_dev *mdev;
+	int irq;
+	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 = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
+	if (ret)
+		return ret;
+
+	mt76_pci_disable_aspm(pdev);
+
+	if (id->device == 0x7916 || id->device == 0x790a)
+		return mt7915_pci_hif2_probe(pdev);
+
+	dev = mt7915_mmio_probe(&pdev->dev, pcim_iomap_table(pdev)[0],
+				id->device);
+	if (IS_ERR(dev))
+		return PTR_ERR(dev);
+
+	mdev = &dev->mt76;
+	mt7915_wfsys_reset(dev);
+	hif2 = mt7915_pci_init_hif2(pdev);
+
+	ret = mt7915_pci_wed_init(dev, pdev, &irq);
+	if (ret < 0)
+		goto free_wed_or_irq_vector;
+
+	if (!ret) {
+		hif2 = mt7915_pci_init_hif2(pdev);
+
+		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, mt7915_irq_handler,
+			       IRQF_SHARED, KBUILD_MODNAME, dev);
+	if (ret)
+		goto free_wed_or_irq_vector;
+
+	/* master switch of PCIe tnterrupt enable */
+	mt76_wr(dev, MT_PCIE_MAC_INT_ENABLE, 0xff);
+
+	if (hif2) {
+		dev->hif2 = hif2;
+
+		mt76_wr(dev, MT_INT1_MASK_CSR, 0);
+		/* master switch of PCIe tnterrupt enable */
+		if (is_mt7915(mdev))
+			mt76_wr(dev, MT_PCIE1_MAC_INT_ENABLE, 0xff);
+		else
+			mt76_wr(dev, MT_PCIE1_MAC_INT_ENABLE_MT7916, 0xff);
+
+		ret = devm_request_irq(mdev->dev, dev->hif2->irq,
+				       mt7915_irq_handler, IRQF_SHARED,
+				       KBUILD_MODNAME "-hif", dev);
+		if (ret)
+			goto free_hif2;
+	}
+
+	ret = mt7915_register_device(dev);
+	if (ret)
+		goto free_hif2_irq;
+
+	return 0;
+
+free_hif2_irq:
+	if (dev->hif2)
+		devm_free_irq(mdev->dev, dev->hif2->irq, 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(&mdev->mmio.wed))
+		mtk_wed_device_detach(&mdev->mmio.wed);
+	else
+		pci_free_irq_vectors(pdev);
+free_device:
+	mt76_free_device(&dev->mt76);
+
+	return ret;
+}
+
+static void mt7915_hif_remove(struct pci_dev *pdev)
+{
+	struct mt7915_hif *hif = pci_get_drvdata(pdev);
+
+	list_del(&hif->list);
+}
+
+static void mt7915_pci_remove(struct pci_dev *pdev)
+{
+	struct mt76_dev *mdev;
+	struct mt7915_dev *dev;
+
+	mdev = pci_get_drvdata(pdev);
+	dev = container_of(mdev, struct mt7915_dev, mt76);
+	mt7915_put_hif2(dev->hif2);
+	mt7915_unregister_device(dev);
+}
+
+struct pci_driver mt7915_hif_driver = {
+	.name		= KBUILD_MODNAME "_hif",
+	.id_table	= mt7915_hif_device_table,
+	.probe		= mt7915_pci_probe,
+	.remove		= mt7915_hif_remove,
+};
+
+struct pci_driver mt7915_pci_driver = {
+	.name		= KBUILD_MODNAME,
+	.id_table	= mt7915_pci_device_table,
+	.probe		= mt7915_pci_probe,
+	.remove		= mt7915_pci_remove,
+};
+
+MODULE_DEVICE_TABLE(pci, mt7915_pci_device_table);
+MODULE_DEVICE_TABLE(pci, mt7915_hif_device_table);
+MODULE_FIRMWARE(MT7915_FIRMWARE_WA);
+MODULE_FIRMWARE(MT7915_FIRMWARE_WM);
+MODULE_FIRMWARE(MT7915_ROM_PATCH);
+MODULE_FIRMWARE(MT7916_FIRMWARE_WA);
+MODULE_FIRMWARE(MT7916_FIRMWARE_WM);
+MODULE_FIRMWARE(MT7916_ROM_PATCH);