1/* SPDX-License-Identifier: GPL-2.0-only
2 *
3 * Copyright (c) 2021, MediaTek Inc.
4 * Copyright (c) 2021-2022, Intel Corporation.
5 *
6 * Authors:
7 *  Amir Hanania <amir.hanania@intel.com>
8 *  Haijun Liu <haijun.liu@mediatek.com>
9 *  Moises Veleta <moises.veleta@intel.com>
10 *  Ricardo Martinez <ricardo.martinez@linux.intel.com>
11 *
12 * Contributors:
13 *  Chiranjeevi Rapolu <chiranjeevi.rapolu@intel.com>
14 *  Eliot Lee <eliot.lee@intel.com>
15 *  Sreehari Kancharla <sreehari.kancharla@intel.com>
16 */
17
18#ifndef __T7XX_PORT_PROXY_H__
19#define __T7XX_PORT_PROXY_H__
20
21#include <linux/bits.h>
22#include <linux/device.h>
23#include <linux/skbuff.h>
24#include <linux/types.h>
25
26#include "t7xx_hif_cldma.h"
27#include "t7xx_modem_ops.h"
28#include "t7xx_port.h"
29
30#define MTK_QUEUES		16
31#define RX_QUEUE_MAXLEN		32
32#define CTRL_QUEUE_MAXLEN	16
33
34enum port_cfg_id {
35	PORT_CFG_ID_INVALID,
36	PORT_CFG_ID_NORMAL,
37	PORT_CFG_ID_EARLY,
38};
39
40struct port_proxy {
41	int			port_count;
42	struct list_head	rx_ch_ports[PORT_CH_ID_MASK + 1];
43	struct list_head	queue_ports[CLDMA_NUM][MTK_QUEUES];
44	struct device		*dev;
45	enum port_cfg_id	cfg_id;
46	struct t7xx_port	ports[];
47};
48
49struct ccci_header {
50	__le32 packet_header;
51	__le32 packet_len;
52	__le32 status;
53	__le32 ex_msg;
54};
55
56/* Coupled with HW - indicates if there is data following the CCCI header or not */
57#define CCCI_HEADER_NO_DATA	0xffffffff
58
59#define CCCI_H_AST_BIT		BIT(31)
60#define CCCI_H_SEQ_FLD		GENMASK(30, 16)
61#define CCCI_H_CHN_FLD		GENMASK(15, 0)
62
63struct ctrl_msg_header {
64	__le32	ctrl_msg_id;
65	__le32	ex_msg;
66	__le32	data_length;
67};
68
69/* Control identification numbers for AP<->MD messages  */
70#define CTL_ID_HS1_MSG		0x0
71#define CTL_ID_HS2_MSG		0x1
72#define CTL_ID_HS3_MSG		0x2
73#define CTL_ID_MD_EX		0x4
74#define CTL_ID_DRV_VER_ERROR	0x5
75#define CTL_ID_MD_EX_ACK	0x6
76#define CTL_ID_MD_EX_PASS	0x8
77#define CTL_ID_PORT_ENUM	0x9
78
79/* Modem exception check identification code - "EXCP" */
80#define MD_EX_CHK_ID		0x45584350
81/* Modem exception check acknowledge identification code - "EREC" */
82#define MD_EX_CHK_ACK_ID	0x45524543
83
84#define PORT_INFO_RSRVD		GENMASK(31, 16)
85#define PORT_INFO_ENFLG		BIT(15)
86#define PORT_INFO_CH_ID		GENMASK(14, 0)
87
88#define PORT_ENUM_VER		0
89#define PORT_ENUM_HEAD_PATTERN	0x5a5a5a5a
90#define PORT_ENUM_TAIL_PATTERN	0xa5a5a5a5
91#define PORT_ENUM_VER_MISMATCH	0x00657272
92
93/* Port operations mapping */
94extern struct port_ops wwan_sub_port_ops;
95extern struct port_ops ctl_port_ops;
96
97#ifdef CONFIG_WWAN_DEBUGFS
98extern struct port_ops t7xx_trace_port_ops;
99#endif
100
101void t7xx_port_proxy_reset(struct port_proxy *port_prox);
102void t7xx_port_proxy_uninit(struct port_proxy *port_prox);
103int t7xx_port_proxy_init(struct t7xx_modem *md);
104void t7xx_port_proxy_md_status_notify(struct port_proxy *port_prox, unsigned int state);
105int t7xx_port_enum_msg_handler(struct t7xx_modem *md, void *msg);
106int t7xx_port_proxy_chl_enable_disable(struct port_proxy *port_prox, unsigned int ch_id,
107				       bool en_flag);
108void t7xx_port_proxy_set_cfg(struct t7xx_modem *md, enum port_cfg_id cfg_id);
109int t7xx_port_proxy_recv_skb(struct cldma_queue *queue, struct sk_buff *skb);
110int t7xx_port_proxy_recv_skb_from_dedicated_queue(struct cldma_queue *queue, struct sk_buff *skb);
111
112#endif /* __T7XX_PORT_PROXY_H__ */
113