1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _INTEL_PMT_CLASS_H 3 #define _INTEL_PMT_CLASS_H 4 5 #include <linux/intel_vsec.h> 6 #include <linux/xarray.h> 7 #include <linux/types.h> 8 #include <linux/bits.h> 9 #include <linux/err.h> 10 #include <linux/io.h> 11 12 #include "telemetry.h" 13 14 /* PMT access types */ 15 #define ACCESS_BARID 2 16 #define ACCESS_LOCAL 3 17 18 /* PMT discovery base address/offset register layout */ 19 #define GET_BIR(v) ((v) & GENMASK(2, 0)) 20 #define GET_ADDRESS(v) ((v) & GENMASK(31, 3)) 21 22 struct device; 23 struct pci_dev; 24 extern struct class intel_pmt_class; 25 26 struct telem_endpoint { 27 struct device *dev; 28 struct telem_header header; 29 struct pmt_callbacks *cb; 30 void __iomem *base; 31 bool present; 32 struct kref kref; 33 }; 34 35 struct intel_pmt_header { 36 u32 base_offset; 37 u32 size; 38 u32 guid; 39 u8 access_type; 40 u8 telem_type; 41 }; 42 43 struct intel_pmt_entry { 44 struct telem_endpoint *ep; 45 struct pci_dev *pcidev; 46 struct intel_pmt_header header; 47 u32 disc_header[PMT_DISC_DWORDS]; 48 struct bin_attribute pmt_bin_attr; 49 const struct attribute_group *attr_grp; 50 struct kobject *kobj; 51 void __iomem *disc_table; 52 void __iomem *base; 53 struct pmt_callbacks *cb; 54 unsigned long base_addr; 55 size_t size; 56 u64 feature_flags; 57 u32 guid; 58 u32 num_rmids; /* Number of Resource Monitoring IDs */ 59 int devid; 60 }; 61 62 struct intel_pmt_namespace { 63 const char *name; 64 struct xarray *xa; 65 int (*pmt_header_decode)(struct intel_pmt_entry *entry, 66 struct device *dev); 67 int (*pmt_pre_decode)(struct intel_vsec_device *ivdev, 68 struct intel_pmt_entry *entry); 69 int (*pmt_post_decode)(struct intel_vsec_device *ivdev, 70 struct intel_pmt_entry *entry); 71 int (*pmt_add_endpoint)(struct intel_vsec_device *ivdev, 72 struct intel_pmt_entry *entry); 73 }; 74 75 int pmt_telem_read_mmio(struct device *dev, struct pmt_callbacks *cb, u32 guid, void *buf, 76 void __iomem *addr, loff_t off, u32 count); 77 bool intel_pmt_is_early_client_hw(struct device *dev); 78 int intel_pmt_dev_create(struct intel_pmt_entry *entry, 79 struct intel_pmt_namespace *ns, 80 struct intel_vsec_device *dev, int idx); 81 void intel_pmt_dev_destroy(struct intel_pmt_entry *entry, 82 struct intel_pmt_namespace *ns); 83 #if IS_ENABLED(CONFIG_INTEL_PMT_DISCOVERY) 84 void intel_pmt_get_features(struct intel_pmt_entry *entry); 85 #else 86 static inline void intel_pmt_get_features(struct intel_pmt_entry *entry) {} 87 #endif 88 89 #endif 90