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 val = readl(dev->mmio.regs + offset);
14 trace_reg_rr(dev, offset, val);
15
16 return val;
17 }
18
mt76_mmio_wr(struct mt76_dev * dev,u32 offset,u32 val)19 static void mt76_mmio_wr(struct mt76_dev *dev, u32 offset, u32 val)
20 {
21 trace_reg_wr(dev, offset, val);
22 writel(val, dev->mmio.regs + offset);
23 }
24
mt76_mmio_rmw(struct mt76_dev * dev,u32 offset,u32 mask,u32 val)25 static u32 mt76_mmio_rmw(struct mt76_dev *dev, u32 offset, u32 mask, u32 val)
26 {
27 val |= mt76_mmio_rr(dev, offset) & ~mask;
28 mt76_mmio_wr(dev, offset, val);
29 return val;
30 }
31
mt76_mmio_write_copy(struct mt76_dev * dev,u32 offset,const void * data,int len)32 static void mt76_mmio_write_copy(struct mt76_dev *dev, u32 offset,
33 const void *data, int len)
34 {
35 __iowrite32_copy(dev->mmio.regs + offset, data, DIV_ROUND_UP(len, 4));
36 }
37
mt76_mmio_read_copy(struct mt76_dev * dev,u32 offset,void * data,int len)38 static void mt76_mmio_read_copy(struct mt76_dev *dev, u32 offset,
39 void *data, int len)
40 {
41 __ioread32_copy(data, dev->mmio.regs + offset, DIV_ROUND_UP(len, 4));
42 }
43
mt76_mmio_wr_rp(struct mt76_dev * dev,u32 base,const struct mt76_reg_pair * data,int len)44 static int mt76_mmio_wr_rp(struct mt76_dev *dev, u32 base,
45 const struct mt76_reg_pair *data, int len)
46 {
47 while (len > 0) {
48 mt76_mmio_wr(dev, data->reg, data->value);
49 data++;
50 len--;
51 }
52
53 return 0;
54 }
55
mt76_mmio_rd_rp(struct mt76_dev * dev,u32 base,struct mt76_reg_pair * data,int len)56 static int mt76_mmio_rd_rp(struct mt76_dev *dev, u32 base,
57 struct mt76_reg_pair *data, int len)
58 {
59 while (len > 0) {
60 data->value = mt76_mmio_rr(dev, data->reg);
61 data++;
62 len--;
63 }
64
65 return 0;
66 }
67
mt76_set_irq_mask(struct mt76_dev * dev,u32 addr,u32 clear,u32 set)68 void mt76_set_irq_mask(struct mt76_dev *dev, u32 addr,
69 u32 clear, u32 set)
70 {
71 unsigned long flags;
72
73 spin_lock_irqsave(&dev->mmio.irq_lock, flags);
74 dev->mmio.irqmask &= ~clear;
75 dev->mmio.irqmask |= set;
76 if (addr)
77 mt76_mmio_wr(dev, addr, dev->mmio.irqmask);
78 spin_unlock_irqrestore(&dev->mmio.irq_lock, flags);
79 }
80 EXPORT_SYMBOL_GPL(mt76_set_irq_mask);
81
mt76_mmio_init(struct mt76_dev * dev,void __iomem * regs)82 void mt76_mmio_init(struct mt76_dev *dev, void __iomem *regs)
83 {
84 static const struct mt76_bus_ops mt76_mmio_ops = {
85 .rr = mt76_mmio_rr,
86 .rmw = mt76_mmio_rmw,
87 .wr = mt76_mmio_wr,
88 .write_copy = mt76_mmio_write_copy,
89 .read_copy = mt76_mmio_read_copy,
90 .wr_rp = mt76_mmio_wr_rp,
91 .rd_rp = mt76_mmio_rd_rp,
92 .type = MT76_BUS_MMIO,
93 };
94
95 dev->bus = &mt76_mmio_ops;
96 dev->mmio.regs = regs;
97
98 spin_lock_init(&dev->mmio.irq_lock);
99 }
100 EXPORT_SYMBOL_GPL(mt76_mmio_init);
101