1 #ifndef __MTK_WED_H 2 #define __MTK_WED_H 3 4 #include <linux/kernel.h> 5 #include <linux/rcupdate.h> 6 #include <linux/regmap.h> 7 #include <linux/pci.h> 8 9 #define MTK_WED_TX_QUEUES 2 10 11 struct mtk_wed_hw; 12 struct mtk_wdma_desc; 13 14 enum mtk_wed_bus_tye { 15 MTK_WED_BUS_PCIE, 16 MTK_WED_BUS_AXI, 17 }; 18 19 struct mtk_wed_ring { 20 struct mtk_wdma_desc *desc; 21 dma_addr_t desc_phys; 22 u32 desc_size; 23 int size; 24 25 u32 reg_base; 26 void __iomem *wpdma; 27 }; 28 29 struct mtk_wed_device { 30 #ifdef CONFIG_NET_MEDIATEK_SOC_WED 31 const struct mtk_wed_ops *ops; 32 struct device *dev; 33 struct mtk_wed_hw *hw; 34 bool init_done, running; 35 int wdma_idx; 36 int irq; 37 38 struct mtk_wed_ring tx_ring[MTK_WED_TX_QUEUES]; 39 struct mtk_wed_ring txfree_ring; 40 struct mtk_wed_ring tx_wdma[MTK_WED_TX_QUEUES]; 41 42 struct { 43 int size; 44 void **pages; 45 struct mtk_wdma_desc *desc; 46 dma_addr_t desc_phys; 47 } buf_ring; 48 49 /* filled by driver: */ 50 struct { 51 union { 52 struct platform_device *platform_dev; 53 struct pci_dev *pci_dev; 54 }; 55 enum mtk_wed_bus_tye bus_type; 56 57 u32 wpdma_phys; 58 u32 wpdma_int; 59 u32 wpdma_mask; 60 u32 wpdma_tx; 61 u32 wpdma_txfree; 62 63 u16 token_start; 64 unsigned int nbuf; 65 66 u8 tx_tbit[MTK_WED_TX_QUEUES]; 67 u8 txfree_tbit; 68 69 u32 (*init_buf)(void *ptr, dma_addr_t phys, int token_id); 70 int (*offload_enable)(struct mtk_wed_device *wed); 71 void (*offload_disable)(struct mtk_wed_device *wed); 72 } wlan; 73 #endif 74 }; 75 76 struct mtk_wed_ops { 77 int (*attach)(struct mtk_wed_device *dev); 78 int (*tx_ring_setup)(struct mtk_wed_device *dev, int ring, 79 void __iomem *regs); 80 int (*txfree_ring_setup)(struct mtk_wed_device *dev, 81 void __iomem *regs); 82 void (*detach)(struct mtk_wed_device *dev); 83 84 void (*stop)(struct mtk_wed_device *dev); 85 void (*start)(struct mtk_wed_device *dev, u32 irq_mask); 86 void (*reset_dma)(struct mtk_wed_device *dev); 87 88 u32 (*reg_read)(struct mtk_wed_device *dev, u32 reg); 89 void (*reg_write)(struct mtk_wed_device *dev, u32 reg, u32 val); 90 91 u32 (*irq_get)(struct mtk_wed_device *dev, u32 mask); 92 void (*irq_set_mask)(struct mtk_wed_device *dev, u32 mask); 93 }; 94 95 extern const struct mtk_wed_ops __rcu *mtk_soc_wed_ops; 96 97 static inline int 98 mtk_wed_device_attach(struct mtk_wed_device *dev) 99 { 100 int ret = -ENODEV; 101 102 #ifdef CONFIG_NET_MEDIATEK_SOC_WED 103 rcu_read_lock(); 104 dev->ops = rcu_dereference(mtk_soc_wed_ops); 105 if (dev->ops) 106 ret = dev->ops->attach(dev); 107 else 108 rcu_read_unlock(); 109 110 if (ret) 111 dev->ops = NULL; 112 #endif 113 114 return ret; 115 } 116 117 #ifdef CONFIG_NET_MEDIATEK_SOC_WED 118 #define mtk_wed_device_active(_dev) !!(_dev)->ops 119 #define mtk_wed_device_detach(_dev) (_dev)->ops->detach(_dev) 120 #define mtk_wed_device_start(_dev, _mask) (_dev)->ops->start(_dev, _mask) 121 #define mtk_wed_device_tx_ring_setup(_dev, _ring, _regs) \ 122 (_dev)->ops->tx_ring_setup(_dev, _ring, _regs) 123 #define mtk_wed_device_txfree_ring_setup(_dev, _regs) \ 124 (_dev)->ops->txfree_ring_setup(_dev, _regs) 125 #define mtk_wed_device_reg_read(_dev, _reg) \ 126 (_dev)->ops->reg_read(_dev, _reg) 127 #define mtk_wed_device_reg_write(_dev, _reg, _val) \ 128 (_dev)->ops->reg_write(_dev, _reg, _val) 129 #define mtk_wed_device_irq_get(_dev, _mask) \ 130 (_dev)->ops->irq_get(_dev, _mask) 131 #define mtk_wed_device_irq_set_mask(_dev, _mask) \ 132 (_dev)->ops->irq_set_mask(_dev, _mask) 133 #else 134 static inline bool mtk_wed_device_active(struct mtk_wed_device *dev) 135 { 136 return false; 137 } 138 #define mtk_wed_device_detach(_dev) do {} while (0) 139 #define mtk_wed_device_start(_dev, _mask) do {} while (0) 140 #define mtk_wed_device_tx_ring_setup(_dev, _ring, _regs) -ENODEV 141 #define mtk_wed_device_txfree_ring_setup(_dev, _ring, _regs) -ENODEV 142 #define mtk_wed_device_reg_read(_dev, _reg) 0 143 #define mtk_wed_device_reg_write(_dev, _reg, _val) do {} while (0) 144 #define mtk_wed_device_irq_get(_dev, _mask) 0 145 #define mtk_wed_device_irq_set_mask(_dev, _mask) do {} while (0) 146 #endif 147 148 #endif 149