1 /*
2 * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
3 *
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17 #include "mt76.h"
18 #include "trace.h"
19
mt76_mmio_rr(struct mt76_dev * dev,u32 offset)20 static u32 mt76_mmio_rr(struct mt76_dev *dev, u32 offset)
21 {
22 u32 val;
23
24 val = ioread32(dev->regs + offset);
25 trace_reg_rr(dev, offset, val);
26
27 return val;
28 }
29
mt76_mmio_wr(struct mt76_dev * dev,u32 offset,u32 val)30 static void mt76_mmio_wr(struct mt76_dev *dev, u32 offset, u32 val)
31 {
32 trace_reg_wr(dev, offset, val);
33 iowrite32(val, dev->regs + offset);
34 }
35
mt76_mmio_rmw(struct mt76_dev * dev,u32 offset,u32 mask,u32 val)36 static u32 mt76_mmio_rmw(struct mt76_dev *dev, u32 offset, u32 mask, u32 val)
37 {
38 val |= mt76_mmio_rr(dev, offset) & ~mask;
39 mt76_mmio_wr(dev, offset, val);
40 return val;
41 }
42
mt76_mmio_copy(struct mt76_dev * dev,u32 offset,const void * data,int len)43 static void mt76_mmio_copy(struct mt76_dev *dev, u32 offset, const void *data,
44 int len)
45 {
46 __iowrite32_copy(dev->regs + offset, data, len >> 2);
47 }
48
mt76_mmio_init(struct mt76_dev * dev,void __iomem * regs)49 void mt76_mmio_init(struct mt76_dev *dev, void __iomem *regs)
50 {
51 static const struct mt76_bus_ops mt76_mmio_ops = {
52 .rr = mt76_mmio_rr,
53 .rmw = mt76_mmio_rmw,
54 .wr = mt76_mmio_wr,
55 .copy = mt76_mmio_copy,
56 };
57
58 dev->bus = &mt76_mmio_ops;
59 dev->regs = regs;
60 }
61 EXPORT_SYMBOL_GPL(mt76_mmio_init);
62
