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 * Haijun Liu <haijun.liu@mediatek.com>
8 * Eliot Lee <eliot.lee@intel.com>
9 * Moises Veleta <moises.veleta@intel.com>
10 * Ricardo Martinez <ricardo.martinez@linux.intel.com>
11 *
12 * Contributors:
13 * Amir Hanania <amir.hanania@intel.com>
14 * Chiranjeevi Rapolu <chiranjeevi.rapolu@intel.com>
15 * Sreehari Kancharla <sreehari.kancharla@intel.com>
16 */
17
18#ifndef __T7XX_MODEM_OPS_H__
19#define __T7XX_MODEM_OPS_H__
20
21#include <linux/spinlock.h>
22#include <linux/types.h>
23#include <linux/workqueue.h>
24
25#include "t7xx_hif_cldma.h"
26#include "t7xx_pci.h"
27
28#define FEATURE_COUNT 64
29
30/**
31 * enum hif_ex_stage - HIF exception handshake stages with the HW.
32 * @HIF_EX_INIT: Disable and clear TXQ.
33 * @HIF_EX_INIT_DONE: Polling for initialization to be done.
34 * @HIF_EX_CLEARQ_DONE: Disable RX, flush TX/RX workqueues and clear RX.
35 * @HIF_EX_ALLQ_RESET: HW is back in safe mode for re-initialization and restart.
36 */
37enum hif_ex_stage {
38 HIF_EX_INIT,
39 HIF_EX_INIT_DONE,
40 HIF_EX_CLEARQ_DONE,
41 HIF_EX_ALLQ_RESET,
42};
43
44struct mtk_runtime_feature {
45 u8 feature_id;
46 u8 support_info;
47 u8 reserved[2];
48 __le32 data_len;
49 __le32 data[];
50};
51
52enum md_event_id {
53 FSM_PRE_START,
54 FSM_START,
55 FSM_READY,
56};
57
58struct t7xx_sys_info {
59 bool ready;
60 bool handshake_ongoing;
61 u8 feature_set[FEATURE_COUNT];
62 struct t7xx_port *ctl_port;
63};
64
65struct t7xx_modem {
66 struct cldma_ctrl *md_ctrl[CLDMA_NUM];
67 struct t7xx_pci_dev *t7xx_dev;
68 struct t7xx_sys_info core_md;
69 struct t7xx_sys_info core_ap;
70 bool md_init_finish;
71 bool rgu_irq_asserted;
72 struct workqueue_struct *handshake_wq;
73 struct work_struct handshake_work;
74 struct work_struct ap_handshake_work;
75 struct t7xx_fsm_ctl *fsm_ctl;
76 struct port_proxy *port_prox;
77 unsigned int exp_id;
78 spinlock_t exp_lock; /* Protects exception events */
79};
80
81void t7xx_md_exception_handshake(struct t7xx_modem *md);
82void t7xx_md_event_notify(struct t7xx_modem *md, enum md_event_id evt_id);
83int t7xx_md_reset(struct t7xx_pci_dev *t7xx_dev);
84int t7xx_md_init(struct t7xx_pci_dev *t7xx_dev);
85void t7xx_md_exit(struct t7xx_pci_dev *t7xx_dev);
86void t7xx_clear_rgu_irq(struct t7xx_pci_dev *t7xx_dev);
87int t7xx_acpi_fldr_func(struct t7xx_pci_dev *t7xx_dev);
88int t7xx_acpi_pldr_func(struct t7xx_pci_dev *t7xx_dev);
89int t7xx_pci_mhccif_isr(struct t7xx_pci_dev *t7xx_dev);
90
91#endif /* __T7XX_MODEM_OPS_H__ */
92

source code of linux/drivers/net/wwan/t7xx/t7xx_modem_ops.h