233 lines
6 KiB
C
233 lines
6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* MTK USB Offload Driver
|
|
* *
|
|
* Copyright (c) 2022 MediaTek Inc.
|
|
* Author: Jeremy Chou <jeremy.chou@mediatek.com>
|
|
*/
|
|
|
|
#ifndef __USB_OFFLOAD_H__
|
|
#define __USB_OFFLOAD_H__
|
|
|
|
#include <linux/types.h>
|
|
#include <sound/asound.h>
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/debugfs.h>
|
|
#include <linux/usb/audio.h>
|
|
#include <linux/usb/audio-v2.h>
|
|
#include <linux/usb/audio-v3.h>
|
|
#include <linux/uaccess.h>
|
|
#include <sound/pcm.h>
|
|
#include <sound/core.h>
|
|
#include <sound/asound.h>
|
|
#include <linux/usb.h>
|
|
#include <linux/iommu.h>
|
|
#include <linux/dma-mapping.h>
|
|
|
|
#define MIN_USB_OFFLOAD_SHIFT (8)
|
|
#define MIN_USB_OFFLOAD_POOL_SIZE (1 << MIN_USB_OFFLOAD_SHIFT)
|
|
|
|
#define BUF_CTX_SIZE 31
|
|
#define BUF_SEG_SIZE ((15 * 2 + 1) * 2)
|
|
#define USB_OFFLOAD_TRBS_PER_SEGMENT 256
|
|
#define USB_OFFLOAD_TRB_SEGMENT_SIZE (USB_OFFLOAD_TRBS_PER_SEGMENT*16)
|
|
|
|
#define USB_OFFLOAD_USE_SRAM 0
|
|
#define SRAM_ADDR 0x11052000
|
|
#define SRAM_TOTAL_SIZE 0x12000
|
|
#define SRAM_TR_SIZE 0x4000
|
|
#define SRAM_TR_OFST 0x20C0
|
|
|
|
struct usb_offload_mem_info {
|
|
unsigned long long phy_addr;
|
|
unsigned long long va_addr;
|
|
unsigned long long size;
|
|
unsigned char *vir_addr;
|
|
};
|
|
|
|
struct usb_offload_buffer {
|
|
/* -- DMA -- */
|
|
unsigned char *dma_area; /* DMA area */
|
|
dma_addr_t dma_addr; /* physical bus address (not accessible from main CPU) */
|
|
size_t dma_bytes; /* size of DMA area */
|
|
bool allocated;
|
|
};
|
|
|
|
enum usb_offload_mem_id {
|
|
USB_OFFLOAD_MEM_DRAM_ID = 0,
|
|
USB_OFFLOAD_MEM_SRAM_ID = 1,
|
|
USB_OFFLOAD_MEM_NUM,
|
|
};
|
|
|
|
enum {
|
|
ENABLE_STREAM,
|
|
DISABLE_STREAM,
|
|
};
|
|
#define USB_OFFLOAD_IOC_MAGIC 'U'
|
|
/* Enable/Disable USB Offload */
|
|
#define USB_OFFLOAD_INIT_ADSP _IOW(USB_OFFLOAD_IOC_MAGIC, 0, int)
|
|
/* Enable USB Stream */
|
|
#define USB_OFFLOAD_ENABLE_STREAM _IOW(USB_OFFLOAD_IOC_MAGIC, 1, unsigned int)
|
|
/* Disable USB Stream */
|
|
#define USB_OFFLOAD_DISABLE_STREAM _IOW(USB_OFFLOAD_IOC_MAGIC, 2, unsigned int)
|
|
|
|
#define BUS_INTERVAL_FULL_SPEED 1000 /* in us */
|
|
#define BUS_INTERVAL_HIGHSPEED_AND_ABOVE 125 /* in us */
|
|
#define MAX_BINTERVAL_ISOC_EP 16
|
|
#define DEV_RELEASE_WAIT_TIMEOUT 10000 /* in ms */
|
|
|
|
enum usb_audio_stream_status {
|
|
USB_AUDIO_STREAM_STATUS_ENUM_MIN_VAL = INT_MIN,
|
|
USB_AUDIO_STREAM_REQ_START = 0,
|
|
USB_AUDIO_STREAM_REQ_STOP = 1,
|
|
USB_AUDIO_STREAM_STATUS_ENUM_MAX_VAL = INT_MAX,
|
|
};
|
|
|
|
enum usb_audio_device_speed {
|
|
USB_AUDIO_DEVICE_SPEED_ENUM_MIN_VAL = INT_MIN,
|
|
USB_AUDIO_DEVICE_SPEED_INVALID = 0,
|
|
USB_AUDIO_DEVICE_SPEED_LOW = 1,
|
|
USB_AUDIO_DEVICE_SPEED_FULL = 2,
|
|
USB_AUDIO_DEVICE_SPEED_HIGH = 3,
|
|
USB_AUDIO_DEVICE_SPEED_SUPER = 4,
|
|
USB_AUDIO_DEVICE_SPEED_SUPER_PLUS = 5,
|
|
USB_AUDIO_DEVICE_SPEED_ENUM_MAX_VAL = INT_MAX,
|
|
};
|
|
|
|
enum ssusb_offload_mode {
|
|
SSUSB_OFFLOAD_MODE_NONE = 0,
|
|
SSUSB_OFFLOAD_MODE_D,
|
|
SSUSB_OFFLOAD_MODE_S,
|
|
};
|
|
|
|
/* struct ssusb_offload */
|
|
struct ssusb_offload {
|
|
struct device *dev;
|
|
int (*get_mode)(struct device *dev);
|
|
};
|
|
|
|
struct mem_info_xhci {
|
|
bool use_sram;
|
|
unsigned int xhci_data_addr;
|
|
unsigned int xhci_data_size;
|
|
};
|
|
|
|
struct usb_audio_stream_info {
|
|
unsigned char enable;
|
|
unsigned char pcm_card_num;
|
|
unsigned char pcm_dev_num;
|
|
unsigned char direction;
|
|
|
|
unsigned int bit_depth;
|
|
unsigned int number_of_ch;
|
|
unsigned int bit_rate;
|
|
|
|
unsigned char service_interval_valid;
|
|
unsigned int service_interval;
|
|
unsigned char xhc_irq_period_ms;
|
|
unsigned char xhc_urb_num;
|
|
unsigned char dram_size;
|
|
unsigned char dram_cnt;
|
|
unsigned char start_thld;
|
|
unsigned char stop_thld;
|
|
unsigned int pcm_size;
|
|
|
|
snd_pcm_format_t audio_format;
|
|
};
|
|
|
|
struct usb_audio_stream_msg {
|
|
unsigned char status_valid;
|
|
enum usb_audio_stream_status status;
|
|
unsigned char internal_status_valid;
|
|
unsigned int internal_status;
|
|
unsigned char slot_id_valid;
|
|
unsigned int slot_id;
|
|
unsigned char usb_token_valid;
|
|
unsigned int usb_token;
|
|
unsigned char pcm_card_num_valid;
|
|
unsigned char pcm_card_num;
|
|
unsigned char pcm_dev_num_valid;
|
|
unsigned char pcm_dev_num;
|
|
unsigned char direction_valid;
|
|
unsigned char direction;
|
|
unsigned char std_as_opr_intf_desc_valid;
|
|
struct usb_interface_descriptor std_as_opr_intf_desc;
|
|
unsigned char std_as_data_ep_desc_valid;
|
|
struct usb_endpoint_descriptor std_as_data_ep_desc;
|
|
unsigned char std_as_sync_ep_desc_valid;
|
|
struct usb_endpoint_descriptor std_as_sync_ep_desc;
|
|
unsigned char usb_audio_spec_revision_valid;
|
|
u16 usb_audio_spec_revision;
|
|
unsigned char data_path_delay_valid;
|
|
unsigned char data_path_delay;
|
|
unsigned char usb_audio_subslot_size_valid;
|
|
unsigned char usb_audio_subslot_size;
|
|
unsigned char interrupter_num_valid;
|
|
unsigned char interrupter_num;
|
|
unsigned char speed_info_valid;
|
|
enum usb_audio_device_speed speed_info;
|
|
unsigned char controller_num_valid;
|
|
unsigned char controller_num;
|
|
struct usb_audio_stream_info uainfo;
|
|
};
|
|
|
|
struct intf_info {
|
|
unsigned int data_ep_pipe;
|
|
unsigned int sync_ep_pipe;
|
|
u8 *xfer_buf;
|
|
u8 intf_num;
|
|
u8 pcm_card_num;
|
|
u8 pcm_dev_num;
|
|
u8 direction;
|
|
bool in_use;
|
|
};
|
|
|
|
struct usb_audio_dev {
|
|
struct usb_device *udev;
|
|
/* audio control interface */
|
|
struct usb_host_interface *ctrl_intf;
|
|
unsigned int card_num;
|
|
unsigned int usb_core_id;
|
|
atomic_t in_use;
|
|
struct kref kref;
|
|
wait_queue_head_t disconnect_wq;
|
|
|
|
/* interface specific */
|
|
int num_intf;
|
|
struct intf_info *info;
|
|
};
|
|
|
|
struct usb_offload_dev {
|
|
struct device *dev;
|
|
struct xhci_hcd *xhci;
|
|
u32 intr_num;
|
|
unsigned long card_slot;
|
|
unsigned int card_num;
|
|
enum usb_offload_mem_id mem_id;
|
|
bool default_use_sram;
|
|
int current_mem_mode;
|
|
bool is_streaming;
|
|
bool tx_streaming;
|
|
bool rx_streaming;
|
|
bool adsp_inited;
|
|
bool connected;
|
|
bool opened;
|
|
bool adsp_exception;
|
|
bool adsp_ready;
|
|
struct ssusb_offload *ssusb_offload_notify;
|
|
struct mutex dev_lock;
|
|
};
|
|
|
|
extern int mtk_usb_offload_allocate_mem(struct usb_offload_buffer *buf,
|
|
unsigned int size, int align, enum usb_offload_mem_id mem_id);
|
|
extern int mtk_usb_offload_free_mem(struct usb_offload_buffer *buf, enum usb_offload_mem_id mem_id);
|
|
extern int ssusb_offload_register(struct ssusb_offload *offload);
|
|
extern int ssusb_offload_unregister(struct device *dev);
|
|
|
|
|
|
extern bool usb_offload_ready(void);
|
|
#endif /* __USB_OFFLOAD_H__ */
|