1 // SPDX-License-Identifier: ISC
2 /*
3 * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
4 */
5
6 #include "mt76.h"
7 #include "trace.h"
8
mt76_mmio_rr(struct mt76_dev * dev,u32 offset)9 static u32 mt76_mmio_rr(struct mt76_dev *dev, u32 offset)
10 {
11 u32 val;
12
13 #if defined(__linux__)
14 val = readl(dev->mmio.regs + offset);
15 #elif defined(__FreeBSD__)
16 val = readl((u8 *)dev->mmio.regs + offset);
17 #endif
18 trace_reg_rr(dev, offset, val);
19
20 return val;
21 }
22
mt76_mmio_wr(struct mt76_dev * dev,u32 offset,u32 val)23 static void mt76_mmio_wr(struct mt76_dev *dev, u32 offset, u32 val)
24 {
25 trace_reg_wr(dev, offset, val);
26 #if defined(__linux__)
27 writel(val, dev->mmio.regs + offset);
28 #elif defined(__FreeBSD__)
29 writel(val, (u8 *)dev->mmio.regs + offset);
30 #endif
31 }
32
mt76_mmio_rmw(struct mt76_dev * dev,u32 offset,u32 mask,u32 val)33 static u32 mt76_mmio_rmw(struct mt76_dev *dev, u32 offset, u32 mask, u32 val)
34 {
35 val |= mt76_mmio_rr(dev, offset) & ~mask;
36 mt76_mmio_wr(dev, offset, val);
37 return val;
38 }
39
mt76_mmio_write_copy(struct mt76_dev * dev,u32 offset,const void * data,int len)40 static void mt76_mmio_write_copy(struct mt76_dev *dev, u32 offset,
41 const void *data, int len)
42 {
43 #if defined(__linux__)
44 __iowrite32_copy(dev->mmio.regs + offset, data, DIV_ROUND_UP(len, 4));
45 #elif defined(__FreeBSD__)
46 __iowrite32_copy((u8 *)dev->mmio.regs + offset, data, DIV_ROUND_UP(len, 4));
47 #endif
48 }
49
mt76_mmio_read_copy(struct mt76_dev * dev,u32 offset,void * data,int len)50 static void mt76_mmio_read_copy(struct mt76_dev *dev, u32 offset,
51 void *data, int len)
52 {
53 #if defined(__linux__)
54 __ioread32_copy(data, dev->mmio.regs + offset, DIV_ROUND_UP(len, 4));
55 #elif defined(__FreeBSD__)
56 __ioread32_copy(data, (u8 *)dev->mmio.regs + offset, DIV_ROUND_UP(len, 4));
57 #endif
58 }
59
mt76_mmio_wr_rp(struct mt76_dev * dev,u32 base,const struct mt76_reg_pair * data,int len)60 static int mt76_mmio_wr_rp(struct mt76_dev *dev, u32 base,
61 const struct mt76_reg_pair *data, int len)
62 {
63 while (len > 0) {
64 mt76_mmio_wr(dev, data->reg, data->value);
65 data++;
66 len--;
67 }
68
69 return 0;
70 }
71
mt76_mmio_rd_rp(struct mt76_dev * dev,u32 base,struct mt76_reg_pair * data,int len)72 static int mt76_mmio_rd_rp(struct mt76_dev *dev, u32 base,
73 struct mt76_reg_pair *data, int len)
74 {
75 while (len > 0) {
76 data->value = mt76_mmio_rr(dev, data->reg);
77 data++;
78 len--;
79 }
80
81 return 0;
82 }
83
mt76_set_irq_mask(struct mt76_dev * dev,u32 addr,u32 clear,u32 set)84 void mt76_set_irq_mask(struct mt76_dev *dev, u32 addr,
85 u32 clear, u32 set)
86 {
87 unsigned long flags;
88
89 spin_lock_irqsave(&dev->mmio.irq_lock, flags);
90 dev->mmio.irqmask &= ~clear;
91 dev->mmio.irqmask |= set;
92 if (addr) {
93 if (mtk_wed_device_active(&dev->mmio.wed))
94 mtk_wed_device_irq_set_mask(&dev->mmio.wed,
95 dev->mmio.irqmask);
96 else
97 mt76_mmio_wr(dev, addr, dev->mmio.irqmask);
98 }
99 spin_unlock_irqrestore(&dev->mmio.irq_lock, flags);
100 }
101 EXPORT_SYMBOL_GPL(mt76_set_irq_mask);
102
mt76_mmio_init(struct mt76_dev * dev,void __iomem * regs)103 void mt76_mmio_init(struct mt76_dev *dev, void __iomem *regs)
104 {
105 static const struct mt76_bus_ops mt76_mmio_ops = {
106 .rr = mt76_mmio_rr,
107 .rmw = mt76_mmio_rmw,
108 .wr = mt76_mmio_wr,
109 .write_copy = mt76_mmio_write_copy,
110 .read_copy = mt76_mmio_read_copy,
111 .wr_rp = mt76_mmio_wr_rp,
112 .rd_rp = mt76_mmio_rd_rp,
113 .type = MT76_BUS_MMIO,
114 };
115
116 dev->bus = &mt76_mmio_ops;
117 dev->mmio.regs = regs;
118
119 spin_lock_init(&dev->mmio.irq_lock);
120 }
121 EXPORT_SYMBOL_GPL(mt76_mmio_init);
122