1 // SPDX-License-Identifier: ISC
2 /* Copyright (C) 2020 MediaTek Inc. */
3 
4 #include <linux/kernel.h>
5 #include <linux/module.h>
6 #include <linux/platform_device.h>
7 #include <linux/pci.h>
8 
9 #include "mt7615.h"
10 #include "regs.h"
11 #include "mac.h"
12 #include "../trace.h"
13 
14 const u32 mt7615e_reg_map[] = {
15 	[MT_TOP_CFG_BASE]	= 0x01000,
16 	[MT_HW_BASE]		= 0x01000,
17 	[MT_PCIE_REMAP_2]	= 0x02504,
18 	[MT_ARB_BASE]		= 0x20c00,
19 	[MT_HIF_BASE]		= 0x04000,
20 	[MT_CSR_BASE]		= 0x07000,
21 	[MT_PLE_BASE]		= 0x08000,
22 	[MT_PSE_BASE]		= 0x0c000,
23 	[MT_CFG_BASE]		= 0x20200,
24 	[MT_AGG_BASE]		= 0x20a00,
25 	[MT_TMAC_BASE]		= 0x21000,
26 	[MT_RMAC_BASE]		= 0x21200,
27 	[MT_DMA_BASE]		= 0x21800,
28 	[MT_PF_BASE]		= 0x22000,
29 	[MT_WTBL_BASE_ON]	= 0x23000,
30 	[MT_WTBL_BASE_OFF]	= 0x23400,
31 	[MT_LPON_BASE]		= 0x24200,
32 	[MT_MIB_BASE]		= 0x24800,
33 	[MT_WTBL_BASE_ADDR]	= 0x30000,
34 	[MT_PCIE_REMAP_BASE2]	= 0x80000,
35 	[MT_TOP_MISC_BASE]	= 0xc0000,
36 	[MT_EFUSE_ADDR_BASE]	= 0x81070000,
37 };
38 
39 const u32 mt7663e_reg_map[] = {
40 	[MT_TOP_CFG_BASE]	= 0x01000,
41 	[MT_HW_BASE]		= 0x02000,
42 	[MT_DMA_SHDL_BASE]	= 0x06000,
43 	[MT_PCIE_REMAP_2]	= 0x0700c,
44 	[MT_ARB_BASE]		= 0x20c00,
45 	[MT_HIF_BASE]		= 0x04000,
46 	[MT_CSR_BASE]		= 0x07000,
47 	[MT_PLE_BASE]		= 0x08000,
48 	[MT_PSE_BASE]		= 0x0c000,
49 	[MT_PP_BASE]            = 0x0e000,
50 	[MT_CFG_BASE]		= 0x20000,
51 	[MT_AGG_BASE]		= 0x22000,
52 	[MT_TMAC_BASE]		= 0x24000,
53 	[MT_RMAC_BASE]		= 0x25000,
54 	[MT_DMA_BASE]		= 0x27000,
55 	[MT_PF_BASE]		= 0x28000,
56 	[MT_WTBL_BASE_ON]	= 0x29000,
57 	[MT_WTBL_BASE_OFF]	= 0x29800,
58 	[MT_LPON_BASE]		= 0x2b000,
59 	[MT_MIB_BASE]		= 0x2d000,
60 	[MT_WTBL_BASE_ADDR]	= 0x30000,
61 	[MT_PCIE_REMAP_BASE2]	= 0x90000,
62 	[MT_TOP_MISC_BASE]	= 0xc0000,
63 	[MT_EFUSE_ADDR_BASE]	= 0x78011000,
64 };
65 
66 static void
mt7615_rx_poll_complete(struct mt76_dev * mdev,enum mt76_rxq_id q)67 mt7615_rx_poll_complete(struct mt76_dev *mdev, enum mt76_rxq_id q)
68 {
69 	mt76_connac_irq_enable(mdev, MT_INT_RX_DONE(q));
70 }
71 
mt7615_irq_handler(int irq,void * dev_instance)72 static irqreturn_t mt7615_irq_handler(int irq, void *dev_instance)
73 {
74 	struct mt7615_dev *dev = dev_instance;
75 
76 	mt76_wr(dev, MT_INT_MASK_CSR, 0);
77 
78 	if (!test_bit(MT76_STATE_INITIALIZED, &dev->mphy.state))
79 		return IRQ_NONE;
80 
81 	tasklet_schedule(&dev->mt76.irq_tasklet);
82 
83 	return IRQ_HANDLED;
84 }
85 
mt7615_irq_tasklet(struct tasklet_struct * t)86 static void mt7615_irq_tasklet(struct tasklet_struct *t)
87 {
88 	struct mt7615_dev *dev = from_tasklet(dev, t, mt76.irq_tasklet);
89 	u32 intr, mask = 0, tx_mcu_mask = mt7615_tx_mcu_int_mask(dev);
90 	u32 mcu_int;
91 
92 	mt76_wr(dev, MT_INT_MASK_CSR, 0);
93 
94 	intr = mt76_rr(dev, MT_INT_SOURCE_CSR);
95 	intr &= dev->mt76.mmio.irqmask;
96 	mt76_wr(dev, MT_INT_SOURCE_CSR, intr);
97 
98 	trace_dev_irq(&dev->mt76, intr, dev->mt76.mmio.irqmask);
99 
100 	mask |= intr & MT_INT_RX_DONE_ALL;
101 	if (intr & tx_mcu_mask)
102 		mask |= tx_mcu_mask;
103 	mt76_set_irq_mask(&dev->mt76, MT_INT_MASK_CSR, mask, 0);
104 
105 	if (intr & tx_mcu_mask)
106 		napi_schedule(&dev->mt76.tx_napi);
107 
108 	if (intr & MT_INT_RX_DONE(0))
109 		napi_schedule(&dev->mt76.napi[0]);
110 
111 	if (intr & MT_INT_RX_DONE(1))
112 		napi_schedule(&dev->mt76.napi[1]);
113 
114 	if (!(intr & (MT_INT_MCU_CMD | MT7663_INT_MCU_CMD)))
115 		return;
116 
117 	if (is_mt7663(&dev->mt76)) {
118 		mcu_int = mt76_rr(dev, MT_MCU2HOST_INT_STATUS);
119 		mcu_int &= MT7663_MCU_CMD_ERROR_MASK;
120 		mt76_wr(dev, MT_MCU2HOST_INT_STATUS, mcu_int);
121 	} else {
122 		mcu_int = mt76_rr(dev, MT_MCU_CMD);
123 		mcu_int &= MT_MCU_CMD_ERROR_MASK;
124 	}
125 
126 	if (!mcu_int)
127 		return;
128 
129 	dev->reset_state = mcu_int;
130 	queue_work(dev->mt76.wq, &dev->reset_work);
131 	wake_up(&dev->reset_wait);
132 }
133 
__mt7615_reg_addr(struct mt7615_dev * dev,u32 addr)134 static u32 __mt7615_reg_addr(struct mt7615_dev *dev, u32 addr)
135 {
136 	if (addr < 0x100000)
137 		return addr;
138 
139 	return mt7615_reg_map(dev, addr);
140 }
141 
mt7615_rr(struct mt76_dev * mdev,u32 offset)142 static u32 mt7615_rr(struct mt76_dev *mdev, u32 offset)
143 {
144 	struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76);
145 	u32 addr = __mt7615_reg_addr(dev, offset);
146 
147 	return dev->bus_ops->rr(mdev, addr);
148 }
149 
mt7615_wr(struct mt76_dev * mdev,u32 offset,u32 val)150 static void mt7615_wr(struct mt76_dev *mdev, u32 offset, u32 val)
151 {
152 	struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76);
153 	u32 addr = __mt7615_reg_addr(dev, offset);
154 
155 	dev->bus_ops->wr(mdev, addr, val);
156 }
157 
mt7615_rmw(struct mt76_dev * mdev,u32 offset,u32 mask,u32 val)158 static u32 mt7615_rmw(struct mt76_dev *mdev, u32 offset, u32 mask, u32 val)
159 {
160 	struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76);
161 	u32 addr = __mt7615_reg_addr(dev, offset);
162 
163 	return dev->bus_ops->rmw(mdev, addr, mask, val);
164 }
165 
mt7615_mmio_probe(struct device * pdev,void __iomem * mem_base,int irq,const u32 * map)166 int mt7615_mmio_probe(struct device *pdev, void __iomem *mem_base,
167 		      int irq, const u32 *map)
168 {
169 	static const struct mt76_driver_ops drv_ops = {
170 		/* txwi_size = txd size + txp size */
171 		.txwi_size = MT_TXD_SIZE + sizeof(struct mt76_connac_txp_common),
172 		.drv_flags = MT_DRV_TXWI_NO_FREE | MT_DRV_HW_MGMT_TXQ,
173 		.survey_flags = SURVEY_INFO_TIME_TX |
174 				SURVEY_INFO_TIME_RX |
175 				SURVEY_INFO_TIME_BSS_RX,
176 		.token_size = MT7615_TOKEN_SIZE,
177 		.tx_prepare_skb = mt7615_tx_prepare_skb,
178 		.tx_complete_skb = mt76_connac_tx_complete_skb,
179 		.rx_check = mt7615_rx_check,
180 		.rx_skb = mt7615_queue_rx_skb,
181 		.rx_poll_complete = mt7615_rx_poll_complete,
182 		.sta_add = mt7615_mac_sta_add,
183 		.sta_remove = mt7615_mac_sta_remove,
184 		.update_survey = mt7615_update_channel,
185 	};
186 	struct mt76_bus_ops *bus_ops;
187 	struct ieee80211_ops *ops;
188 	struct mt7615_dev *dev;
189 	struct mt76_dev *mdev;
190 	int ret;
191 
192 	ops = devm_kmemdup(pdev, &mt7615_ops, sizeof(mt7615_ops), GFP_KERNEL);
193 	if (!ops)
194 		return -ENOMEM;
195 
196 	mdev = mt76_alloc_device(pdev, sizeof(*dev), ops, &drv_ops);
197 	if (!mdev)
198 		return -ENOMEM;
199 
200 	dev = container_of(mdev, struct mt7615_dev, mt76);
201 	mt76_mmio_init(&dev->mt76, mem_base);
202 	tasklet_setup(&mdev->irq_tasklet, mt7615_irq_tasklet);
203 
204 	dev->reg_map = map;
205 	dev->ops = ops;
206 	mdev->rev = (mt76_rr(dev, MT_HW_CHIPID) << 16) |
207 		    (mt76_rr(dev, MT_HW_REV) & 0xff);
208 	dev_dbg(mdev->dev, "ASIC revision: %04x\n", mdev->rev);
209 
210 	dev->bus_ops = dev->mt76.bus;
211 	bus_ops = devm_kmemdup(dev->mt76.dev, dev->bus_ops, sizeof(*bus_ops),
212 			       GFP_KERNEL);
213 	if (!bus_ops) {
214 		ret = -ENOMEM;
215 		goto err_free_dev;
216 	}
217 
218 	bus_ops->rr = mt7615_rr;
219 	bus_ops->wr = mt7615_wr;
220 	bus_ops->rmw = mt7615_rmw;
221 	dev->mt76.bus = bus_ops;
222 
223 	mt76_wr(dev, MT_INT_MASK_CSR, 0);
224 
225 	ret = devm_request_irq(mdev->dev, irq, mt7615_irq_handler,
226 			       IRQF_SHARED, KBUILD_MODNAME, dev);
227 	if (ret)
228 		goto err_free_dev;
229 
230 	if (is_mt7663(mdev))
231 		mt76_wr(dev, MT_PCIE_IRQ_ENABLE, 1);
232 
233 	ret = mt7615_register_device(dev);
234 	if (ret)
235 		goto err_free_irq;
236 
237 	return 0;
238 
239 err_free_irq:
240 	devm_free_irq(pdev, irq, dev);
241 err_free_dev:
242 	mt76_free_device(&dev->mt76);
243 
244 	return ret;
245 }
246 
mt7615_init(void)247 static int __init mt7615_init(void)
248 {
249 	int ret;
250 
251 	ret = pci_register_driver(&mt7615_pci_driver);
252 	if (ret)
253 		return ret;
254 
255 	if (IS_ENABLED(CONFIG_MT7622_WMAC)) {
256 		ret = platform_driver_register(&mt7622_wmac_driver);
257 		if (ret)
258 			pci_unregister_driver(&mt7615_pci_driver);
259 	}
260 
261 	return ret;
262 }
263 
mt7615_exit(void)264 static void __exit mt7615_exit(void)
265 {
266 	if (IS_ENABLED(CONFIG_MT7622_WMAC))
267 		platform_driver_unregister(&mt7622_wmac_driver);
268 	pci_unregister_driver(&mt7615_pci_driver);
269 }
270 
271 module_init(mt7615_init);
272 module_exit(mt7615_exit);
273 MODULE_LICENSE("Dual BSD/GPL");
274