125 lines
4.4 KiB
C
125 lines
4.4 KiB
C
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/* 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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* Ricardo Martinez <ricardo.martinez@linux.intel.com>
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* Sreehari Kancharla <sreehari.kancharla@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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* Moises Veleta <moises.veleta@intel.com>
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*/
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#ifndef __T7XX_PCI_H__
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#define __T7XX_PCI_H__
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#include <linux/completion.h>
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#include <linux/irqreturn.h>
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#include <linux/mutex.h>
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#include <linux/pci.h>
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#include <linux/spinlock.h>
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#include <linux/types.h>
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#include "t7xx_reg.h"
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/* struct t7xx_addr_base - holds base addresses
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* @pcie_mac_ireg_base: PCIe MAC register base
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* @pcie_ext_reg_base: used to calculate base addresses for CLDMA, DPMA and MHCCIF registers
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* @pcie_dev_reg_trsl_addr: used to calculate the register base address
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* @infracfg_ao_base: base address used in CLDMA reset operations
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* @mhccif_rc_base: host view of MHCCIF rc base addr
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*/
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struct t7xx_addr_base {
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void __iomem *pcie_mac_ireg_base;
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void __iomem *pcie_ext_reg_base;
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u32 pcie_dev_reg_trsl_addr;
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void __iomem *infracfg_ao_base;
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void __iomem *mhccif_rc_base;
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};
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typedef irqreturn_t (*t7xx_intr_callback)(int irq, void *param);
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/* struct t7xx_pci_dev - MTK device context structure
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* @intr_handler: array of handler function for request_threaded_irq
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* @intr_thread: array of thread_fn for request_threaded_irq
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* @callback_param: array of cookie passed back to interrupt functions
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* @pdev: PCI device
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* @base_addr: memory base addresses of HW components
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* @md: modem interface
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* @ccmni_ctlb: context structure used to control the network data path
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* @rgu_pci_irq_en: RGU callback ISR registered and active
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* @md_pm_entities: list of pm entities
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* @md_pm_entity_mtx: protects md_pm_entities list
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* @pm_sr_ack: ack from the device when went to sleep or woke up
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* @md_pm_state: state for resume/suspend
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* @md_pm_lock: protects PCIe sleep lock
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* @sleep_disable_count: PCIe L1.2 lock counter
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* @sleep_lock_acquire: indicates that sleep has been disabled
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*/
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struct t7xx_pci_dev {
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t7xx_intr_callback intr_handler[EXT_INT_NUM];
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t7xx_intr_callback intr_thread[EXT_INT_NUM];
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void *callback_param[EXT_INT_NUM];
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struct pci_dev *pdev;
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struct t7xx_addr_base base_addr;
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struct t7xx_modem *md;
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struct t7xx_ccmni_ctrl *ccmni_ctlb;
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bool rgu_pci_irq_en;
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struct completion init_done;
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/* Low Power Items */
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struct list_head md_pm_entities;
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struct mutex md_pm_entity_mtx; /* Protects MD PM entities list */
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struct completion pm_sr_ack;
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atomic_t md_pm_state;
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spinlock_t md_pm_lock; /* Protects PCI resource lock */
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unsigned int sleep_disable_count;
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struct completion sleep_lock_acquire;
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#ifdef CONFIG_WWAN_DEBUGFS
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struct dentry *debugfs_dir;
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#endif
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};
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enum t7xx_pm_id {
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PM_ENTITY_ID_CTRL1,
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PM_ENTITY_ID_CTRL2,
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PM_ENTITY_ID_DATA,
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PM_ENTITY_ID_INVALID
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};
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/* struct md_pm_entity - device power management entity
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* @entity: list of PM Entities
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* @suspend: callback invoked before sending D3 request to device
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* @suspend_late: callback invoked after getting D3 ACK from device
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* @resume_early: callback invoked before sending the resume request to device
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* @resume: callback invoked after getting resume ACK from device
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* @id: unique PM entity identifier
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* @entity_param: parameter passed to the registered callbacks
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*
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* This structure is used to indicate PM operations required by internal
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* HW modules such as CLDMA and DPMA.
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*/
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struct md_pm_entity {
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struct list_head entity;
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int (*suspend)(struct t7xx_pci_dev *t7xx_dev, void *entity_param);
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void (*suspend_late)(struct t7xx_pci_dev *t7xx_dev, void *entity_param);
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void (*resume_early)(struct t7xx_pci_dev *t7xx_dev, void *entity_param);
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int (*resume)(struct t7xx_pci_dev *t7xx_dev, void *entity_param);
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enum t7xx_pm_id id;
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void *entity_param;
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};
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void t7xx_pci_disable_sleep(struct t7xx_pci_dev *t7xx_dev);
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void t7xx_pci_enable_sleep(struct t7xx_pci_dev *t7xx_dev);
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int t7xx_pci_sleep_disable_complete(struct t7xx_pci_dev *t7xx_dev);
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int t7xx_pci_pm_entity_register(struct t7xx_pci_dev *t7xx_dev, struct md_pm_entity *pm_entity);
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int t7xx_pci_pm_entity_unregister(struct t7xx_pci_dev *t7xx_dev, struct md_pm_entity *pm_entity);
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void t7xx_pci_pm_init_late(struct t7xx_pci_dev *t7xx_dev);
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void t7xx_pci_pm_exp_detected(struct t7xx_pci_dev *t7xx_dev);
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#endif /* __T7XX_PCI_H__ */
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