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mt76/mt7615/mmio.c
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Felix Fietkau 33f29d2345 wifi: mt76: relicense to BSD-3-Clause-Clear 
MediaTek has asked to switch from the ISC license to BSD-3-Clause-Clear,
in order to improve clarity and the legal integrity of the code.

The BSD-3-Clause license includes the "no endorsement" clause, which is
important for protecting the reputation of the original authors and
contributors by preventing unauthorized use of their names for endorsement
purposes.

This clause is absent in the BSD-2-Clause license, which is more permissive
but lacks this specific protection.

This change also cleans up the license of some Kconfig/Makefile files,
which were accidentally marked as GPL.

The GPL 2.0 remains in use on mt76x0, as well as two source files in mt7615
for which the license situation still needs to be clarified.

Signed-off-by: Felix Fietkau <[email protected]>
2025-10-13 11:11:19 +02:00

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// SPDX-License-Identifier: BSD-3-Clause-Clear
/* Copyright (C) 2020 MediaTek Inc. */
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/pci.h>
#include "mt7615.h"
#include "regs.h"
#include "mac.h"
#include "../trace.h"
const u32 mt7615e_reg_map[] = {
[MT_TOP_CFG_BASE] = 0x01000,
[MT_HW_BASE] = 0x01000,
[MT_PCIE_REMAP_2] = 0x02504,
[MT_ARB_BASE] = 0x20c00,
[MT_HIF_BASE] = 0x04000,
[MT_CSR_BASE] = 0x07000,
[MT_PLE_BASE] = 0x08000,
[MT_PSE_BASE] = 0x0c000,
[MT_CFG_BASE] = 0x20200,
[MT_AGG_BASE] = 0x20a00,
[MT_TMAC_BASE] = 0x21000,
[MT_RMAC_BASE] = 0x21200,
[MT_DMA_BASE] = 0x21800,
[MT_PF_BASE] = 0x22000,
[MT_WTBL_BASE_ON] = 0x23000,
[MT_WTBL_BASE_OFF] = 0x23400,
[MT_LPON_BASE] = 0x24200,
[MT_MIB_BASE] = 0x24800,
[MT_WTBL_BASE_ADDR] = 0x30000,
[MT_PCIE_REMAP_BASE2] = 0x80000,
[MT_TOP_MISC_BASE] = 0xc0000,
[MT_EFUSE_ADDR_BASE] = 0x81070000,
};
const u32 mt7663e_reg_map[] = {
[MT_TOP_CFG_BASE] = 0x01000,
[MT_HW_BASE] = 0x02000,
[MT_DMA_SHDL_BASE] = 0x06000,
[MT_PCIE_REMAP_2] = 0x0700c,
[MT_ARB_BASE] = 0x20c00,
[MT_HIF_BASE] = 0x04000,
[MT_CSR_BASE] = 0x07000,
[MT_PLE_BASE] = 0x08000,
[MT_PSE_BASE] = 0x0c000,
[MT_PP_BASE] = 0x0e000,
[MT_CFG_BASE] = 0x20000,
[MT_AGG_BASE] = 0x22000,
[MT_TMAC_BASE] = 0x24000,
[MT_RMAC_BASE] = 0x25000,
[MT_DMA_BASE] = 0x27000,
[MT_PF_BASE] = 0x28000,
[MT_WTBL_BASE_ON] = 0x29000,
[MT_WTBL_BASE_OFF] = 0x29800,
[MT_LPON_BASE] = 0x2b000,
[MT_MIB_BASE] = 0x2d000,
[MT_WTBL_BASE_ADDR] = 0x30000,
[MT_PCIE_REMAP_BASE2] = 0x90000,
[MT_TOP_MISC_BASE] = 0xc0000,
[MT_EFUSE_ADDR_BASE] = 0x78011000,
};
static void
mt7615_rx_poll_complete(struct mt76_dev *mdev, enum mt76_rxq_id q)
{
mt76_connac_irq_enable(mdev, MT_INT_RX_DONE(q));
}
static irqreturn_t mt7615_irq_handler(int irq, void *dev_instance)
{
struct mt7615_dev *dev = dev_instance;
mt76_wr(dev, MT_INT_MASK_CSR, 0);
if (!test_bit(MT76_STATE_INITIALIZED, &dev->mphy.state))
return IRQ_NONE;
tasklet_schedule(&dev->mt76.irq_tasklet);
return IRQ_HANDLED;
}
static void mt7615_irq_tasklet(struct tasklet_struct *t)
{
struct mt7615_dev *dev = from_tasklet(dev, t, mt76.irq_tasklet);
u32 intr, mask = 0, tx_mcu_mask = mt7615_tx_mcu_int_mask(dev);
u32 mcu_int;
mt76_wr(dev, MT_INT_MASK_CSR, 0);
intr = mt76_rr(dev, MT_INT_SOURCE_CSR);
intr &= dev->mt76.mmio.irqmask;
mt76_wr(dev, MT_INT_SOURCE_CSR, intr);
trace_dev_irq(&dev->mt76, intr, dev->mt76.mmio.irqmask);
mask |= intr & MT_INT_RX_DONE_ALL;
if (intr & tx_mcu_mask)
mask |= tx_mcu_mask;
mt76_set_irq_mask(&dev->mt76, MT_INT_MASK_CSR, mask, 0);
if (intr & tx_mcu_mask)
napi_schedule(&dev->mt76.tx_napi);
if (intr & MT_INT_RX_DONE(0))
napi_schedule(&dev->mt76.napi[0]);
if (intr & MT_INT_RX_DONE(1))
napi_schedule(&dev->mt76.napi[1]);
if (!(intr & (MT_INT_MCU_CMD | MT7663_INT_MCU_CMD)))
return;
if (is_mt7663(&dev->mt76)) {
mcu_int = mt76_rr(dev, MT_MCU2HOST_INT_STATUS);
mcu_int &= MT7663_MCU_CMD_ERROR_MASK;
mt76_wr(dev, MT_MCU2HOST_INT_STATUS, mcu_int);
} else {
mcu_int = mt76_rr(dev, MT_MCU_CMD);
mcu_int &= MT_MCU_CMD_ERROR_MASK;
}
if (!mcu_int)
return;
dev->reset_state = mcu_int;
queue_work(dev->mt76.wq, &dev->reset_work);
wake_up(&dev->reset_wait);
}
static u32 __mt7615_reg_addr(struct mt7615_dev *dev, u32 addr)
{
if (addr < 0x100000)
return addr;
return mt7615_reg_map(dev, addr);
}
static u32 mt7615_rr(struct mt76_dev *mdev, u32 offset)
{
struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76);
u32 addr = __mt7615_reg_addr(dev, offset);
return dev->bus_ops->rr(mdev, addr);
}
static void mt7615_wr(struct mt76_dev *mdev, u32 offset, u32 val)
{
struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76);
u32 addr = __mt7615_reg_addr(dev, offset);
dev->bus_ops->wr(mdev, addr, val);
}
static u32 mt7615_rmw(struct mt76_dev *mdev, u32 offset, u32 mask, u32 val)
{
struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76);
u32 addr = __mt7615_reg_addr(dev, offset);
return dev->bus_ops->rmw(mdev, addr, mask, val);
}
int mt7615_mmio_probe(struct device *pdev, void __iomem *mem_base,
int irq, const u32 *map)
{
static const struct mt76_driver_ops drv_ops = {
/* txwi_size = txd size + txp size */
.txwi_size = MT_TXD_SIZE + sizeof(struct mt76_connac_txp_common),
.drv_flags = MT_DRV_TXWI_NO_FREE | MT_DRV_HW_MGMT_TXQ,
.survey_flags = SURVEY_INFO_TIME_TX |
SURVEY_INFO_TIME_RX |
SURVEY_INFO_TIME_BSS_RX,
.token_size = MT7615_TOKEN_SIZE,
.tx_prepare_skb = mt7615_tx_prepare_skb,
.tx_complete_skb = mt76_connac_tx_complete_skb,
.rx_check = mt7615_rx_check,
.rx_skb = mt7615_queue_rx_skb,
.rx_poll_complete = mt7615_rx_poll_complete,
.sta_add = mt7615_mac_sta_add,
.sta_remove = mt7615_mac_sta_remove,
.update_survey = mt7615_update_channel,
.set_channel = mt7615_set_channel,
};
struct mt76_bus_ops *bus_ops;
struct ieee80211_ops *ops;
struct mt7615_dev *dev;
struct mt76_dev *mdev;
int ret;
ops = devm_kmemdup(pdev, &mt7615_ops, sizeof(mt7615_ops), GFP_KERNEL);
if (!ops)
return -ENOMEM;
mdev = mt76_alloc_device(pdev, sizeof(*dev), ops, &drv_ops);
if (!mdev)
return -ENOMEM;
dev = container_of(mdev, struct mt7615_dev, mt76);
mt76_mmio_init(&dev->mt76, mem_base);
tasklet_setup(&mdev->irq_tasklet, mt7615_irq_tasklet);
dev->reg_map = map;
dev->ops = ops;
mdev->rev = (mt76_rr(dev, MT_HW_CHIPID) << 16) |
(mt76_rr(dev, MT_HW_REV) & 0xff);
dev_dbg(mdev->dev, "ASIC revision: %04x\n", mdev->rev);
dev->bus_ops = dev->mt76.bus;
bus_ops = devm_kmemdup(dev->mt76.dev, dev->bus_ops, sizeof(*bus_ops),
GFP_KERNEL);
if (!bus_ops) {
ret = -ENOMEM;
goto err_free_dev;
}
bus_ops->rr = mt7615_rr;
bus_ops->wr = mt7615_wr;
bus_ops->rmw = mt7615_rmw;
dev->mt76.bus = bus_ops;
mt76_wr(dev, MT_INT_MASK_CSR, 0);
ret = devm_request_irq(mdev->dev, irq, mt7615_irq_handler,
IRQF_SHARED, KBUILD_MODNAME, dev);
if (ret)
goto err_free_dev;
if (is_mt7663(mdev))
mt76_wr(dev, MT_PCIE_IRQ_ENABLE, 1);
ret = mt7615_register_device(dev);
if (ret)
goto err_free_irq;
return 0;
err_free_irq:
devm_free_irq(pdev, irq, dev);
err_free_dev:
mt76_free_device(&dev->mt76);
return ret;
}
static int __init mt7615_init(void)
{
int ret;
ret = pci_register_driver(&mt7615_pci_driver);
if (ret)
return ret;
if (IS_ENABLED(CONFIG_MT7622_WMAC)) {
ret = platform_driver_register(&mt7622_wmac_driver);
if (ret)
pci_unregister_driver(&mt7615_pci_driver);
}
return ret;
}
static void __exit mt7615_exit(void)
{
if (IS_ENABLED(CONFIG_MT7622_WMAC))
platform_driver_unregister(&mt7622_wmac_driver);
pci_unregister_driver(&mt7615_pci_driver);
}
module_init(mt7615_init);
module_exit(mt7615_exit);
MODULE_DESCRIPTION("MediaTek MT7615E MMIO helpers");
MODULE_LICENSE("Dual BSD/GPL");
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