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 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 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 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 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 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 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 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 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 mt76_mmio_wr(dev, addr, dev->mmio.irqmask); 77 spin_unlock_irqrestore(&dev->mmio.irq_lock, flags); 78 } 79 EXPORT_SYMBOL_GPL(mt76_set_irq_mask); 80 81 void mt76_mmio_init(struct mt76_dev *dev, void __iomem *regs) 82 { 83 static const struct mt76_bus_ops mt76_mmio_ops = { 84 .rr = mt76_mmio_rr, 85 .rmw = mt76_mmio_rmw, 86 .wr = mt76_mmio_wr, 87 .write_copy = mt76_mmio_write_copy, 88 .read_copy = mt76_mmio_read_copy, 89 .wr_rp = mt76_mmio_wr_rp, 90 .rd_rp = mt76_mmio_rd_rp, 91 .type = MT76_BUS_MMIO, 92 }; 93 94 dev->bus = &mt76_mmio_ops; 95 dev->mmio.regs = regs; 96 97 skb_queue_head_init(&dev->mmio.mcu.res_q); 98 init_waitqueue_head(&dev->mmio.mcu.wait); 99 spin_lock_init(&dev->mmio.irq_lock); 100 mutex_init(&dev->mmio.mcu.mutex); 101 } 102 EXPORT_SYMBOL_GPL(mt76_mmio_init); 103