1 /* SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (c) 2021, MediaTek Inc.
4 * Copyright (c) 2021-2022, Intel Corporation.
17 #ifndef __T7XX_PCI_H__
18 #define __T7XX_PCI_H__
20 #include <linux/completion.h>
21 #include <linux/irqreturn.h>
22 #include <linux/mutex.h>
23 #include <linux/pci.h>
24 #include <linux/spinlock.h>
25 #include <linux/types.h>
29 /* struct t7xx_addr_base - holds base addresses
30 * @pcie_mac_ireg_base: PCIe MAC register base
31 * @pcie_ext_reg_base: used to calculate base addresses for CLDMA, DPMA and MHCCIF registers
32 * @pcie_dev_reg_trsl_addr: used to calculate the register base address
33 * @infracfg_ao_base: base address used in CLDMA reset operations
34 * @mhccif_rc_base: host view of MHCCIF rc base addr
36 struct t7xx_addr_base {
37 void __iomem *pcie_mac_ireg_base;
38 void __iomem *pcie_ext_reg_base;
39 u32 pcie_dev_reg_trsl_addr;
40 void __iomem *infracfg_ao_base;
41 void __iomem *mhccif_rc_base;
44 typedef irqreturn_t (*t7xx_intr_callback)(int irq, void *param);
46 /* struct t7xx_pci_dev - MTK device context structure
47 * @intr_handler: array of handler function for request_threaded_irq
48 * @intr_thread: array of thread_fn for request_threaded_irq
49 * @callback_param: array of cookie passed back to interrupt functions
51 * @base_addr: memory base addresses of HW components
52 * @md: modem interface
53 * @ccmni_ctlb: context structure used to control the network data path
54 * @rgu_pci_irq_en: RGU callback ISR registered and active
55 * @md_pm_entities: list of pm entities
56 * @md_pm_entity_mtx: protects md_pm_entities list
57 * @pm_sr_ack: ack from the device when went to sleep or woke up
58 * @md_pm_state: state for resume/suspend
59 * @md_pm_lock: protects PCIe sleep lock
60 * @sleep_disable_count: PCIe L1.2 lock counter
61 * @sleep_lock_acquire: indicates that sleep has been disabled
64 t7xx_intr_callback intr_handler[EXT_INT_NUM];
65 t7xx_intr_callback intr_thread[EXT_INT_NUM];
66 void *callback_param[EXT_INT_NUM];
68 struct t7xx_addr_base base_addr;
69 struct t7xx_modem *md;
70 struct t7xx_ccmni_ctrl *ccmni_ctlb;
74 struct list_head md_pm_entities;
75 struct mutex md_pm_entity_mtx; /* Protects MD PM entities list */
76 struct completion pm_sr_ack;
78 spinlock_t md_pm_lock; /* Protects PCI resource lock */
79 unsigned int sleep_disable_count;
80 struct completion sleep_lock_acquire;
81 #ifdef CONFIG_WWAN_DEBUGFS
82 struct dentry *debugfs_dir;
93 /* struct md_pm_entity - device power management entity
94 * @entity: list of PM Entities
95 * @suspend: callback invoked before sending D3 request to device
96 * @suspend_late: callback invoked after getting D3 ACK from device
97 * @resume_early: callback invoked before sending the resume request to device
98 * @resume: callback invoked after getting resume ACK from device
99 * @id: unique PM entity identifier
100 * @entity_param: parameter passed to the registered callbacks
102 * This structure is used to indicate PM operations required by internal
103 * HW modules such as CLDMA and DPMA.
105 struct md_pm_entity {
106 struct list_head entity;
107 int (*suspend)(struct t7xx_pci_dev *t7xx_dev, void *entity_param);
108 void (*suspend_late)(struct t7xx_pci_dev *t7xx_dev, void *entity_param);
109 void (*resume_early)(struct t7xx_pci_dev *t7xx_dev, void *entity_param);
110 int (*resume)(struct t7xx_pci_dev *t7xx_dev, void *entity_param);
115 void t7xx_pci_disable_sleep(struct t7xx_pci_dev *t7xx_dev);
116 void t7xx_pci_enable_sleep(struct t7xx_pci_dev *t7xx_dev);
117 int t7xx_pci_sleep_disable_complete(struct t7xx_pci_dev *t7xx_dev);
118 int t7xx_pci_pm_entity_register(struct t7xx_pci_dev *t7xx_dev, struct md_pm_entity *pm_entity);
119 int t7xx_pci_pm_entity_unregister(struct t7xx_pci_dev *t7xx_dev, struct md_pm_entity *pm_entity);
120 void t7xx_pci_pm_init_late(struct t7xx_pci_dev *t7xx_dev);
121 void t7xx_pci_pm_exp_detected(struct t7xx_pci_dev *t7xx_dev);
123 #endif /* __T7XX_PCI_H__ */