/* SPDX-License-Identifier: GPL-2.0-only
*
* Copyright (c) 2021, MediaTek Inc.
* Copyright (c) 2021-2022, Intel Corporation.
*
* Authors:
* Haijun Liu <[email protected]>
* Ricardo Martinez <[email protected]>
* Sreehari Kancharla <[email protected]>
*
* Contributors:
* Amir Hanania <[email protected]>
* Chiranjeevi Rapolu <[email protected]>
* Moises Veleta <[email protected]>
*/
#ifndef __T7XX_PCI_H__
#define __T7XX_PCI_H__
#include <linux/completion.h>
#include <linux/irqreturn.h>
#include <linux/mutex.h>
#include <linux/pci.h>
#include <linux/spinlock.h>
#include <linux/types.h>
#include "t7xx_reg.h"
/* struct t7xx_addr_base - holds base addresses
* @pcie_mac_ireg_base: PCIe MAC register base
* @pcie_ext_reg_base: used to calculate base addresses for CLDMA, DPMA and MHCCIF registers
* @pcie_dev_reg_trsl_addr: used to calculate the register base address
* @infracfg_ao_base: base address used in CLDMA reset operations
* @mhccif_rc_base: host view of MHCCIF rc base addr
*/
struct t7xx_addr_base {
void __iomem *pcie_mac_ireg_base;
void __iomem *pcie_ext_reg_base;
u32 pcie_dev_reg_trsl_addr;
void __iomem *infracfg_ao_base;
void __iomem *mhccif_rc_base;
};
typedef irqreturn_t (*t7xx_intr_callback)(int irq, void *param);
enum t7xx_mode {
T7XX_UNKNOWN,
T7XX_READY,
T7XX_RESET,
T7XX_FASTBOOT_SWITCHING,
T7XX_FASTBOOT_DOWNLOAD,
T7XX_FASTBOOT_DUMP,
T7XX_MODE_LAST, /* must always be last */
};
/* struct t7xx_pci_dev - MTK device context structure
* @intr_handler: array of handler function for request_threaded_irq
* @intr_thread: array of thread_fn for request_threaded_irq
* @callback_param: array of cookie passed back to interrupt functions
* @pdev: PCI device
* @base_addr: memory base addresses of HW components
* @md: modem interface
* @ccmni_ctlb: context structure used to control the network data path
* @rgu_pci_irq_en: RGU callback ISR registered and active
* @md_pm_entities: list of pm entities
* @md_pm_entity_mtx: protects md_pm_entities list
* @pm_sr_ack: ack from the device when went to sleep or woke up
* @md_pm_state: state for resume/suspend
* @md_pm_lock: protects PCIe sleep lock
* @sleep_disable_count: PCIe L1.2 lock counter
* @sleep_lock_acquire: indicates that sleep has been disabled
* @mode: indicates the device mode
*/
struct t7xx_pci_dev {
t7xx_intr_callback intr_handler[EXT_INT_NUM];
t7xx_intr_callback intr_thread[EXT_INT_NUM];
void *callback_param[EXT_INT_NUM];
struct pci_dev *pdev;
struct t7xx_addr_base base_addr;
struct t7xx_modem *md;
struct t7xx_ccmni_ctrl *ccmni_ctlb;
bool rgu_pci_irq_en;
struct completion init_done;
/* Low Power Items */
struct list_head md_pm_entities;
struct mutex md_pm_entity_mtx; /* Protects MD PM entities list */
struct completion pm_sr_ack;
atomic_t md_pm_state;
spinlock_t md_pm_lock; /* Protects PCI resource lock */
unsigned int sleep_disable_count;
struct completion sleep_lock_acquire;
#ifdef CONFIG_WWAN_DEBUGFS
struct dentry *debugfs_dir;
#endif
u32 mode;
};
enum t7xx_pm_id {
PM_ENTITY_ID_CTRL1,
PM_ENTITY_ID_CTRL2,
PM_ENTITY_ID_DATA,
PM_ENTITY_ID_INVALID
};
/* struct md_pm_entity - device power management entity
* @entity: list of PM Entities
* @suspend: callback invoked before sending D3 request to device
* @suspend_late: callback invoked after getting D3 ACK from device
* @resume_early: callback invoked before sending the resume request to device
* @resume: callback invoked after getting resume ACK from device
* @id: unique PM entity identifier
* @entity_param: parameter passed to the registered callbacks
*
* This structure is used to indicate PM operations required by internal
* HW modules such as CLDMA and DPMA.
*/
struct md_pm_entity {
struct list_head entity;
int (*suspend)(struct t7xx_pci_dev *t7xx_dev, void *entity_param);
void (*suspend_late)(struct t7xx_pci_dev *t7xx_dev, void *entity_param);
void (*resume_early)(struct t7xx_pci_dev *t7xx_dev, void *entity_param);
int (*resume)(struct t7xx_pci_dev *t7xx_dev, void *entity_param);
enum t7xx_pm_id id;
void *entity_param;
};
void t7xx_pci_disable_sleep(struct t7xx_pci_dev *t7xx_dev);
void t7xx_pci_enable_sleep(struct t7xx_pci_dev *t7xx_dev);
int t7xx_pci_sleep_disable_complete(struct t7xx_pci_dev *t7xx_dev);
int t7xx_pci_pm_entity_register(struct t7xx_pci_dev *t7xx_dev, struct md_pm_entity *pm_entity);
int t7xx_pci_pm_entity_unregister(struct t7xx_pci_dev *t7xx_dev, struct md_pm_entity *pm_entity);
void t7xx_pci_pm_init_late(struct t7xx_pci_dev *t7xx_dev);
void t7xx_pci_pm_exp_detected(struct t7xx_pci_dev *t7xx_dev);
void t7xx_mode_update(struct t7xx_pci_dev *t7xx_dev, enum t7xx_mode mode);
int t7xx_pci_reprobe(struct t7xx_pci_dev *t7xx_dev, bool boot);
int t7xx_pci_reprobe_early(struct t7xx_pci_dev *t7xx_dev);
#endif /* __T7XX_PCI_H__ */
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