/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
/* Copyright(c) 2018-2019  Realtek Corporation
 */

#ifndef __RTW_USB_H_
#define __RTW_USB_H_

#define FW_8192C_START_ADDRESS          0x1000
#define FW_8192C_END_ADDRESS            0x5fff

#define RTW_USB_MAX_RXTX_COUNT          128
#define RTW_USB_VENQT_MAX_BUF_SIZE      254
#define MAX_USBCTRL_VENDORREQ_TIMES     10

#define RTW_USB_CMD_READ                0xc0
#define RTW_USB_CMD_WRITE               0x40
#define RTW_USB_CMD_REQ                 0x05

#define RTW_USB_VENQT_CMD_IDX           0x00

#define RTW_USB_TX_SEL_HQ               BIT(0)
#define RTW_USB_TX_SEL_LQ               BIT(1)
#define RTW_USB_TX_SEL_NQ               BIT(2)
#define RTW_USB_TX_SEL_EQ               BIT(3)

#define RTW_USB_BULK_IN_ADDR            0x80
#define RTW_USB_INT_IN_ADDR             0x81

#define RTW_USB_HW_QUEUE_ENTRY          8

#define RTW_USB_PACKET_OFFSET_SZ        8
#define RTW_USB_MAX_XMITBUF_SZ          (1024 * 20)
#define RTW_USB_MAX_RECVBUF_SZ          32768

#define RTW_USB_RECVBUFF_ALIGN_SZ       8

#define RTW_USB_RXAGG_SIZE              6
#define RTW_USB_RXAGG_TIMEOUT           10

#define RTW_USB_RXCB_NUM                4
#define RTW_USB_RX_SKB_NUM              8

#define RTW_USB_EP_MAX                  4

#define TX_DESC_QSEL_MAX                20

#define RTW_USB_VENDOR_ID_REALTEK       0x0bda

static inline struct rtw_usb *rtw_get_usb_priv(struct rtw_dev *rtwdev)
{
        return (struct rtw_usb *)rtwdev->priv;
}

struct rx_usb_ctrl_block {
        struct rtw_dev *rtwdev;
        struct urb *rx_urb;
        struct sk_buff *rx_skb;
};

struct rtw_usb_tx_data {
        u8 sn;
};

struct rtw_usb {
        struct rtw_dev *rtwdev;
        struct usb_device *udev;

        /* protects usb_data_index */
        spinlock_t usb_lock;
        __le32 *usb_data;
        unsigned int usb_data_index;

        u8 pipe_interrupt;
        u8 pipe_in;
        u8 out_ep[RTW_USB_EP_MAX];
        int qsel_to_ep[TX_DESC_QSEL_MAX];

        struct workqueue_struct *txwq, *rxwq;

        struct sk_buff_head tx_queue[RTW_USB_EP_MAX];
        struct work_struct tx_work;

        struct rx_usb_ctrl_block rx_cb[RTW_USB_RXCB_NUM];
        struct sk_buff_head rx_queue;
        struct sk_buff_head rx_free_queue;
        struct work_struct rx_work;
        struct work_struct rx_urb_work;
};

static inline struct rtw_usb_tx_data *rtw_usb_get_tx_data(struct sk_buff *skb)
{
        struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);

        BUILD_BUG_ON(sizeof(struct rtw_usb_tx_data) >
                     sizeof(info->status.status_driver_data));

        return (struct rtw_usb_tx_data *)info->status.status_driver_data;
}

int rtw_usb_probe(struct usb_interface *intf, const struct usb_device_id *id);
void rtw_usb_disconnect(struct usb_interface *intf);

#endif