cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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mtk_wed.h (3483B)

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