da45d2566a
Control Port implements driver control messages such as modem-host handshaking, controls port enumeration, and handles exception messages. The handshaking process between the driver and the modem happens during the init sequence. The process involves the exchange of a list of supported runtime features to make sure that modem and host are ready to provide proper feature lists including port enumeration. Further features can be enabled and controlled in this handshaking process. Signed-off-by: Haijun Liu <haijun.liu@mediatek.com> Signed-off-by: Chandrashekar Devegowda <chandrashekar.devegowda@intel.com> Co-developed-by: Ricardo Martinez <ricardo.martinez@linux.intel.com> Signed-off-by: Ricardo Martinez <ricardo.martinez@linux.intel.com> Reviewed-by: Loic Poulain <loic.poulain@linaro.org> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Reviewed-by: Sergey Ryazanov <ryazanov.s.a@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
89 lines
2.3 KiB
C
89 lines
2.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only
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*
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* Copyright (c) 2021, MediaTek Inc.
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* Copyright (c) 2021-2022, Intel Corporation.
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*
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* Authors:
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* Haijun Liu <haijun.liu@mediatek.com>
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* Eliot Lee <eliot.lee@intel.com>
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* Moises Veleta <moises.veleta@intel.com>
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* Ricardo Martinez <ricardo.martinez@linux.intel.com>
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*
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* Contributors:
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* Amir Hanania <amir.hanania@intel.com>
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* Chiranjeevi Rapolu <chiranjeevi.rapolu@intel.com>
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* Sreehari Kancharla <sreehari.kancharla@intel.com>
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*/
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#ifndef __T7XX_MODEM_OPS_H__
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#define __T7XX_MODEM_OPS_H__
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#include <linux/spinlock.h>
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#include <linux/types.h>
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#include <linux/workqueue.h>
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#include "t7xx_hif_cldma.h"
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#include "t7xx_pci.h"
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#define FEATURE_COUNT 64
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/**
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* enum hif_ex_stage - HIF exception handshake stages with the HW.
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* @HIF_EX_INIT: Disable and clear TXQ.
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* @HIF_EX_INIT_DONE: Polling for initialization to be done.
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* @HIF_EX_CLEARQ_DONE: Disable RX, flush TX/RX workqueues and clear RX.
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* @HIF_EX_ALLQ_RESET: HW is back in safe mode for re-initialization and restart.
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*/
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enum hif_ex_stage {
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HIF_EX_INIT,
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HIF_EX_INIT_DONE,
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HIF_EX_CLEARQ_DONE,
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HIF_EX_ALLQ_RESET,
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};
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struct mtk_runtime_feature {
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u8 feature_id;
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u8 support_info;
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u8 reserved[2];
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__le32 data_len;
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__le32 data[];
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};
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enum md_event_id {
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FSM_PRE_START,
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FSM_START,
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FSM_READY,
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};
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struct t7xx_sys_info {
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bool ready;
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bool handshake_ongoing;
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u8 feature_set[FEATURE_COUNT];
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struct t7xx_port *ctl_port;
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};
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struct t7xx_modem {
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struct cldma_ctrl *md_ctrl[CLDMA_NUM];
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struct t7xx_pci_dev *t7xx_dev;
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struct t7xx_sys_info core_md;
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bool md_init_finish;
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bool rgu_irq_asserted;
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struct workqueue_struct *handshake_wq;
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struct work_struct handshake_work;
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struct t7xx_fsm_ctl *fsm_ctl;
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struct port_proxy *port_prox;
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unsigned int exp_id;
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spinlock_t exp_lock; /* Protects exception events */
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};
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void t7xx_md_exception_handshake(struct t7xx_modem *md);
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void t7xx_md_event_notify(struct t7xx_modem *md, enum md_event_id evt_id);
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int t7xx_md_reset(struct t7xx_pci_dev *t7xx_dev);
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int t7xx_md_init(struct t7xx_pci_dev *t7xx_dev);
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void t7xx_md_exit(struct t7xx_pci_dev *t7xx_dev);
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void t7xx_clear_rgu_irq(struct t7xx_pci_dev *t7xx_dev);
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int t7xx_acpi_fldr_func(struct t7xx_pci_dev *t7xx_dev);
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int t7xx_pci_mhccif_isr(struct t7xx_pci_dev *t7xx_dev);
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#endif /* __T7XX_MODEM_OPS_H__ */
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