Merge branch 'pci/ptm-debugfs'

- Add debugfs support for exposing DWC device-specific PTM context
  (Manivannan Sadhasivam)

* pci/ptm-debugfs:
  PCI: qcom-ep: Mask PTM_UPDATING interrupt
  PCI: dwc: Add debugfs support for PTM context
  PCI: dwc: Pass DWC PCIe mode to dwc_pcie_debugfs_init()
  PCI: Add debugfs support for exposing PTM context

1 files changed, 45 insertions, 0 deletions

diff --git a/include/linux/pci.h b/include/linux/pci.h
index b07e77637082..098d0ad52c16 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -1859,6 +1859,39 @@ static inline bool pci_aer_available(void) { return false; }
 
 bool pci_ats_disabled(void);
 
+#define PCIE_PTM_CONTEXT_UPDATE_AUTO 0
+#define PCIE_PTM_CONTEXT_UPDATE_MANUAL 1
+
+struct pcie_ptm_ops {
+	int (*check_capability)(void *drvdata);
+	int (*context_update_write)(void *drvdata, u8 mode);
+	int (*context_update_read)(void *drvdata, u8 *mode);
+	int (*context_valid_write)(void *drvdata, bool valid);
+	int (*context_valid_read)(void *drvdata, bool *valid);
+	int (*local_clock_read)(void *drvdata, u64 *clock);
+	int (*master_clock_read)(void *drvdata, u64 *clock);
+	int (*t1_read)(void *drvdata, u64 *clock);
+	int (*t2_read)(void *drvdata, u64 *clock);
+	int (*t3_read)(void *drvdata, u64 *clock);
+	int (*t4_read)(void *drvdata, u64 *clock);
+
+	bool (*context_update_visible)(void *drvdata);
+	bool (*context_valid_visible)(void *drvdata);
+	bool (*local_clock_visible)(void *drvdata);
+	bool (*master_clock_visible)(void *drvdata);
+	bool (*t1_visible)(void *drvdata);
+	bool (*t2_visible)(void *drvdata);
+	bool (*t3_visible)(void *drvdata);
+	bool (*t4_visible)(void *drvdata);
+};
+
+struct pci_ptm_debugfs {
+	struct dentry *debugfs;
+	const struct pcie_ptm_ops *ops;
+	struct mutex lock;
+	void *pdata;
+};
+
 #ifdef CONFIG_PCIE_PTM
 int pci_enable_ptm(struct pci_dev *dev, u8 *granularity);
 void pci_disable_ptm(struct pci_dev *dev);
@@ -1871,6 +1904,18 @@ static inline bool pcie_ptm_enabled(struct pci_dev *dev)
 { return false; }
 #endif
 
+#if IS_ENABLED(CONFIG_DEBUG_FS) && IS_ENABLED(CONFIG_PCIE_PTM)
+struct pci_ptm_debugfs *pcie_ptm_create_debugfs(struct device *dev, void *pdata,
+						const struct pcie_ptm_ops *ops);
+void pcie_ptm_destroy_debugfs(struct pci_ptm_debugfs *ptm_debugfs);
+#else
+static inline struct pci_ptm_debugfs
+*pcie_ptm_create_debugfs(struct device *dev, void *pdata,
+			 const struct pcie_ptm_ops *ops) { return NULL; }
+static inline void
+pcie_ptm_destroy_debugfs(struct pci_ptm_debugfs *ptm_debugfs) { }
+#endif
+
 void pci_cfg_access_lock(struct pci_dev *dev);
 bool pci_cfg_access_trylock(struct pci_dev *dev);
 void pci_cfg_access_unlock(struct pci_dev *dev);