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 u32 mt7615_reg_map(struct mt7615_dev *dev, u32 addr)
67 {
68 	u32 base, offset;
69 
70 	if (is_mt7663(&dev->mt76)) {
71 		base = addr & MT7663_MCU_PCIE_REMAP_2_BASE;
72 		offset = addr & MT7663_MCU_PCIE_REMAP_2_OFFSET;
73 	} else {
74 		base = addr & MT_MCU_PCIE_REMAP_2_BASE;
75 		offset = addr & MT_MCU_PCIE_REMAP_2_OFFSET;
76 	}
77 	mt76_wr(dev, MT_MCU_PCIE_REMAP_2, base);
78 
79 	return MT_PCIE_REMAP_BASE_2 + offset;
80 }
81 
82 static void
83 mt7615_rx_poll_complete(struct mt76_dev *mdev, enum mt76_rxq_id q)
84 {
85 	struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76);
86 
87 	mt7615_irq_enable(dev, MT_INT_RX_DONE(q));
88 }
89 
90 static irqreturn_t mt7615_irq_handler(int irq, void *dev_instance)
91 {
92 	struct mt7615_dev *dev = dev_instance;
93 
94 	mt76_wr(dev, MT_INT_MASK_CSR, 0);
95 
96 	if (!test_bit(MT76_STATE_INITIALIZED, &dev->mphy.state))
97 		return IRQ_NONE;
98 
99 	tasklet_schedule(&dev->irq_tasklet);
100 
101 	return IRQ_HANDLED;
102 }
103 
104 static void mt7615_irq_tasklet(struct tasklet_struct *t)
105 {
106 	struct mt7615_dev *dev = from_tasklet(dev, t, irq_tasklet);
107 	u32 intr, mask = 0, tx_mcu_mask = mt7615_tx_mcu_int_mask(dev);
108 	u32 mcu_int;
109 
110 	mt76_wr(dev, MT_INT_MASK_CSR, 0);
111 
112 	intr = mt76_rr(dev, MT_INT_SOURCE_CSR);
113 	intr &= dev->mt76.mmio.irqmask;
114 	mt76_wr(dev, MT_INT_SOURCE_CSR, intr);
115 
116 	trace_dev_irq(&dev->mt76, intr, dev->mt76.mmio.irqmask);
117 
118 	mask |= intr & MT_INT_RX_DONE_ALL;
119 	if (intr & tx_mcu_mask)
120 		mask |= tx_mcu_mask;
121 	mt76_set_irq_mask(&dev->mt76, MT_INT_MASK_CSR, mask, 0);
122 
123 	if (intr & tx_mcu_mask)
124 		napi_schedule(&dev->mt76.tx_napi);
125 
126 	if (intr & MT_INT_RX_DONE(0))
127 		napi_schedule(&dev->mt76.napi[0]);
128 
129 	if (intr & MT_INT_RX_DONE(1))
130 		napi_schedule(&dev->mt76.napi[1]);
131 
132 	if (!(intr & (MT_INT_MCU_CMD | MT7663_INT_MCU_CMD)))
133 		return;
134 
135 	if (is_mt7663(&dev->mt76)) {
136 		mcu_int = mt76_rr(dev, MT_MCU2HOST_INT_STATUS);
137 		mcu_int &= MT7663_MCU_CMD_ERROR_MASK;
138 	} else {
139 		mcu_int = mt76_rr(dev, MT_MCU_CMD);
140 		mcu_int &= MT_MCU_CMD_ERROR_MASK;
141 	}
142 
143 	if (!mcu_int)
144 		return;
145 
146 	dev->reset_state = mcu_int;
147 	ieee80211_queue_work(mt76_hw(dev), &dev->reset_work);
148 	wake_up(&dev->reset_wait);
149 }
150 
151 static u32 __mt7615_reg_addr(struct mt7615_dev *dev, u32 addr)
152 {
153 	if (addr < 0x100000)
154 		return addr;
155 
156 	return mt7615_reg_map(dev, addr);
157 }
158 
159 static u32 mt7615_rr(struct mt76_dev *mdev, u32 offset)
160 {
161 	struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76);
162 	u32 addr = __mt7615_reg_addr(dev, offset);
163 
164 	return dev->bus_ops->rr(mdev, addr);
165 }
166 
167 static void mt7615_wr(struct mt76_dev *mdev, u32 offset, u32 val)
168 {
169 	struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76);
170 	u32 addr = __mt7615_reg_addr(dev, offset);
171 
172 	dev->bus_ops->wr(mdev, addr, val);
173 }
174 
175 static u32 mt7615_rmw(struct mt76_dev *mdev, u32 offset, u32 mask, u32 val)
176 {
177 	struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76);
178 	u32 addr = __mt7615_reg_addr(dev, offset);
179 
180 	return dev->bus_ops->rmw(mdev, addr, mask, val);
181 }
182 
183 int mt7615_mmio_probe(struct device *pdev, void __iomem *mem_base,
184 		      int irq, const u32 *map)
185 {
186 	static const struct mt76_driver_ops drv_ops = {
187 		/* txwi_size = txd size + txp size */
188 		.txwi_size = MT_TXD_SIZE + sizeof(struct mt7615_txp_common),
189 		.drv_flags = MT_DRV_TXWI_NO_FREE | MT_DRV_HW_MGMT_TXQ,
190 		.survey_flags = SURVEY_INFO_TIME_TX |
191 				SURVEY_INFO_TIME_RX |
192 				SURVEY_INFO_TIME_BSS_RX,
193 		.token_size = MT7615_TOKEN_SIZE,
194 		.tx_prepare_skb = mt7615_tx_prepare_skb,
195 		.tx_complete_skb = mt7615_tx_complete_skb,
196 		.rx_skb = mt7615_queue_rx_skb,
197 		.rx_poll_complete = mt7615_rx_poll_complete,
198 		.sta_ps = mt7615_sta_ps,
199 		.sta_add = mt7615_mac_sta_add,
200 		.sta_remove = mt7615_mac_sta_remove,
201 		.update_survey = mt7615_update_channel,
202 	};
203 	struct mt76_bus_ops *bus_ops;
204 	struct ieee80211_ops *ops;
205 	struct mt7615_dev *dev;
206 	struct mt76_dev *mdev;
207 	int ret;
208 
209 	ops = devm_kmemdup(pdev, &mt7615_ops, sizeof(mt7615_ops), GFP_KERNEL);
210 	if (!ops)
211 		return -ENOMEM;
212 
213 	mdev = mt76_alloc_device(pdev, sizeof(*dev), ops, &drv_ops);
214 	if (!mdev)
215 		return -ENOMEM;
216 
217 	dev = container_of(mdev, struct mt7615_dev, mt76);
218 	mt76_mmio_init(&dev->mt76, mem_base);
219 	tasklet_setup(&dev->irq_tasklet, mt7615_irq_tasklet);
220 
221 	dev->reg_map = map;
222 	dev->ops = ops;
223 	mdev->rev = (mt76_rr(dev, MT_HW_CHIPID) << 16) |
224 		    (mt76_rr(dev, MT_HW_REV) & 0xff);
225 	dev_dbg(mdev->dev, "ASIC revision: %04x\n", mdev->rev);
226 
227 	dev->bus_ops = dev->mt76.bus;
228 	bus_ops = devm_kmemdup(dev->mt76.dev, dev->bus_ops, sizeof(*bus_ops),
229 			       GFP_KERNEL);
230 	if (!bus_ops) {
231 		ret = -ENOMEM;
232 		goto err_free_dev;
233 	}
234 
235 	bus_ops->rr = mt7615_rr;
236 	bus_ops->wr = mt7615_wr;
237 	bus_ops->rmw = mt7615_rmw;
238 	dev->mt76.bus = bus_ops;
239 
240 	mt76_wr(dev, MT_INT_MASK_CSR, 0);
241 
242 	ret = devm_request_irq(mdev->dev, irq, mt7615_irq_handler,
243 			       IRQF_SHARED, KBUILD_MODNAME, dev);
244 	if (ret)
245 		goto err_free_dev;
246 
247 	if (is_mt7663(mdev))
248 		mt76_wr(dev, MT_PCIE_IRQ_ENABLE, 1);
249 
250 	ret = mt7615_register_device(dev);
251 	if (ret)
252 		goto err_free_irq;
253 
254 	return 0;
255 
256 err_free_irq:
257 	devm_free_irq(pdev, irq, dev);
258 err_free_dev:
259 	mt76_free_device(&dev->mt76);
260 
261 	return ret;
262 }
263 
264 static int __init mt7615_init(void)
265 {
266 	int ret;
267 
268 	ret = pci_register_driver(&mt7615_pci_driver);
269 	if (ret)
270 		return ret;
271 
272 	if (IS_ENABLED(CONFIG_MT7622_WMAC)) {
273 		ret = platform_driver_register(&mt7622_wmac_driver);
274 		if (ret)
275 			pci_unregister_driver(&mt7615_pci_driver);
276 	}
277 
278 	return ret;
279 }
280 
281 static void __exit mt7615_exit(void)
282 {
283 	if (IS_ENABLED(CONFIG_MT7622_WMAC))
284 		platform_driver_unregister(&mt7622_wmac_driver);
285 	pci_unregister_driver(&mt7615_pci_driver);
286 }
287 
288 module_init(mt7615_init);
289 module_exit(mt7615_exit);
290 MODULE_LICENSE("Dual BSD/GPL");
291