/* SPDX-License-Identifier: ISC */
/*
* Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
*/
#ifndef __MT76_H
#define __MT76_H
#include <linux/kernel.h>
#include <linux/io.h>
#include <linux/spinlock.h>
#include <linux/skbuff.h>
#include <linux/leds.h>
#include <linux/usb.h>
#include <linux/average.h>
#include <net/mac80211.h>
#include "util.h"
#define MT_TX_RING_SIZE 256
#define MT_MCU_RING_SIZE 32
#define MT_RX_BUF_SIZE 2048
#define MT_SKB_HEAD_LEN 128
struct mt76_dev;
struct mt76_wcid;
struct mt76_reg_pair {
u32 reg;
u32 value;
};
enum mt76_bus_type {
MT76_BUS_MMIO,
MT76_BUS_USB,
};
struct mt76_bus_ops {
u32 (*rr)(struct mt76_dev *dev, u32 offset);
void (*wr)(struct mt76_dev *dev, u32 offset, u32 val);
u32 (*rmw)(struct mt76_dev *dev, u32 offset, u32 mask, u32 val);
void (*write_copy)(struct mt76_dev *dev, u32 offset, const void *data,
int len);
void (*read_copy)(struct mt76_dev *dev, u32 offset, void *data,
int len);
int (*wr_rp)(struct mt76_dev *dev, u32 base,
const struct mt76_reg_pair *rp, int len);
int (*rd_rp)(struct mt76_dev *dev, u32 base,
struct mt76_reg_pair *rp, int len);
enum mt76_bus_type type;
};
#define mt76_is_usb(dev) ((dev)->mt76.bus->type == MT76_BUS_USB)
#define mt76_is_mmio(dev) ((dev)->mt76.bus->type == MT76_BUS_MMIO)
enum mt76_txq_id {
MT_TXQ_VO = IEEE80211_AC_VO,
MT_TXQ_VI = IEEE80211_AC_VI,
MT_TXQ_BE = IEEE80211_AC_BE,
MT_TXQ_BK = IEEE80211_AC_BK,
MT_TXQ_PSD,
MT_TXQ_MCU,
MT_TXQ_BEACON,
MT_TXQ_CAB,
MT_TXQ_FWDL,
__MT_TXQ_MAX
};
enum mt76_rxq_id {
MT_RXQ_MAIN,
MT_RXQ_MCU,
__MT_RXQ_MAX
};
struct mt76_queue_buf {
dma_addr_t addr;
int len;
};
struct mt76_tx_info {
struct mt76_queue_buf buf[32];
struct sk_buff *skb;
int nbuf;
u32 info;
};
struct mt76_queue_entry {
union {
void *buf;
struct sk_buff *skb;
};
union {
struct mt76_txwi_cache *txwi;
struct urb *urb;
};
enum mt76_txq_id qid;
bool skip_buf0:1;
bool schedule:1;
bool done:1;
};
struct mt76_queue_regs {
u32 desc_base;
u32 ring_size;
u32 cpu_idx;
u32 dma_idx;
} __packed __aligned(4);
struct mt76_queue {
struct mt76_queue_regs __iomem *regs;
spinlock_t lock;
struct mt76_queue_entry *entry;
struct mt76_desc *desc;
u16 first;
u16 head;
u16 tail;
int ndesc;
int queued;
int buf_size;
bool stopped;
u8 buf_offset;
u8 hw_idx;
dma_addr_t desc_dma;
struct sk_buff *rx_head;
struct page_frag_cache rx_page;
};
struct mt76_sw_queue {
struct mt76_queue *q;
struct list_head swq;
int swq_queued;
};
struct mt76_mcu_ops {
int (*mcu_send_msg)(struct mt76_dev *dev, int cmd, const void *data,
int len, bool wait_resp);
int (*mcu_wr_rp)(struct mt76_dev *dev, u32 base,
const struct mt76_reg_pair *rp, int len);
int (*mcu_rd_rp)(struct mt76_dev *dev, u32 base,
struct mt76_reg_pair *rp, int len);
int (*mcu_restart)(struct mt76_dev *dev);
};
struct mt76_queue_ops {
int (*init)(struct mt76_dev *dev);
int (*alloc)(struct mt76_dev *dev, struct mt76_queue *q,
int idx, int n_desc, int bufsize,
u32 ring_base);
int (*add_buf)(struct mt76_dev *dev, struct mt76_queue *q,
struct mt76_queue_buf *buf, int nbufs, u32 info,
struct sk_buff *skb, void *txwi);
int (*tx_queue_skb)(struct mt76_dev *dev, enum mt76_txq_id qid,
struct sk_buff *skb, struct mt76_wcid *wcid,
struct ieee80211_sta *sta);
int (*tx_queue_skb_raw)(struct mt76_dev *dev, enum mt76_txq_id qid,
struct sk_buff *skb, u32 tx_info);
void *(*dequeue)(struct mt76_dev *dev, struct mt76_queue *q, bool flush,
int *len, u32 *info, bool *more);
void (*rx_reset)(struct mt76_dev *dev, enum mt76_rxq_id qid);
void (*tx_cleanup)(struct mt76_dev *dev