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   */
37  enum hif_ex_stage {
38  	HIF_EX_INIT,
39  	HIF_EX_INIT_DONE,
40  	HIF_EX_CLEARQ_DONE,
41  	HIF_EX_ALLQ_RESET,
42  };
43  
44  struct mtk_runtime_feature {
45  	u8				feature_id;
46  	u8				support_info;
47  	u8				reserved[2];
48  	__le32				data_len;
49  	__le32				data[];
50  };
51  
52  enum md_event_id {
53  	FSM_PRE_START,
54  	FSM_START,
55  	FSM_READY,
56  };
57  
58  struct t7xx_sys_info {
59  	bool				ready;
60  	bool				handshake_ongoing;
61  	u8				feature_set[FEATURE_COUNT];
62  	struct t7xx_port		*ctl_port;
63  };
64  
65  struct 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  
81  enum reset_type {
82  	FLDR,
83  	PLDR,
84  	FASTBOOT,
85  };
86  
87  void t7xx_md_exception_handshake(struct t7xx_modem *md);
88  void t7xx_md_event_notify(struct t7xx_modem *md, enum md_event_id evt_id);
89  int t7xx_md_reset(struct t7xx_pci_dev *t7xx_dev);
90  int t7xx_md_init(struct t7xx_pci_dev *t7xx_dev);
91  void t7xx_md_exit(struct t7xx_pci_dev *t7xx_dev);
92  void t7xx_clear_rgu_irq(struct t7xx_pci_dev *t7xx_dev);
93  int t7xx_reset_device(struct t7xx_pci_dev *t7xx_dev, enum reset_type type);
94  int t7xx_pci_mhccif_isr(struct t7xx_pci_dev *t7xx_dev);
95  
96  #endif	/* __T7XX_MODEM_OPS_H__ */
97