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 * Ricardo Martinez <ricardo.martinez@linux.intel.com> 9 * Sreehari Kancharla <sreehari.kancharla@intel.com> 10 * 11 * Contributors: 12 * Amir Hanania <amir.hanania@intel.com> 13 * Chiranjeevi Rapolu <chiranjeevi.rapolu@intel.com> 14 * Moises Veleta <moises.veleta@intel.com> 15 */ 16 17 #ifndef __T7XX_PCI_H__ 18 #define __T7XX_PCI_H__ 19 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> 26 27 #include "t7xx_reg.h" 28 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 35 */ 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; 42 }; 43 44 typedef irqreturn_t (*t7xx_intr_callback)(int irq, void *param); 45 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 50 * @pdev: PCI device 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 62 */ 63 struct t7xx_pci_dev { 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]; 67 struct pci_dev *pdev; 68 struct t7xx_addr_base base_addr; 69 struct t7xx_modem *md; 70 struct t7xx_ccmni_ctrl *ccmni_ctlb; 71 bool rgu_pci_irq_en; 72 73 /* Low Power Items */ 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; 77 atomic_t md_pm_state; 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; 83 #endif 84 }; 85 86 enum t7xx_pm_id { 87 PM_ENTITY_ID_CTRL1, 88 PM_ENTITY_ID_CTRL2, 89 PM_ENTITY_ID_DATA, 90 PM_ENTITY_ID_INVALID 91 }; 92 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 101 * 102 * This structure is used to indicate PM operations required by internal 103 * HW modules such as CLDMA and DPMA. 104 */ 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); 111 enum t7xx_pm_id id; 112 void *entity_param; 113 }; 114 115 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); 122 123 #endif /* __T7XX_PCI_H__ */ 124