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 pci_dev;
23 extern struct class intel_pmt_class;
24
25 struct telem_endpoint {
26 struct pci_dev *pcidev;
27 struct telem_header header;
28 struct pmt_callbacks *cb;
29 void __iomem *base;
30 bool present;
31 struct kref kref;
32 };
33
34 struct intel_pmt_header {
35 u32 base_offset;
36 u32 size;
37 u32 guid;
38 u8 access_type;
39 };
40
41 struct intel_pmt_entry {
42 struct telem_endpoint *ep;
43 struct pci_dev *pcidev;
44 struct intel_pmt_header header;
45 struct bin_attribute pmt_bin_attr;
46 const struct attribute_group *attr_grp;
47 struct kobject *kobj;
48 void __iomem *disc_table;
49 void __iomem *base;
50 struct pmt_callbacks *cb;
51 unsigned long base_addr;
52 size_t size;
53 u64 feature_flags;
54 u32 guid;
55 u32 num_rmids; /* Number of Resource Monitoring IDs */
56 int devid;
57 };
58
59 struct intel_pmt_namespace {
60 const char *name;
61 struct xarray *xa;
62 int (*pmt_header_decode)(struct intel_pmt_entry *entry,
63 struct device *dev);
64 int (*pmt_add_endpoint)(struct intel_vsec_device *ivdev,
65 struct intel_pmt_entry *entry);
66 };
67
68 int pmt_telem_read_mmio(struct pci_dev *pdev, struct pmt_callbacks *cb, u32 guid, void *buf,
69 void __iomem *addr, loff_t off, u32 count);
70 bool intel_pmt_is_early_client_hw(struct device *dev);
71 int intel_pmt_dev_create(struct intel_pmt_entry *entry,
72 struct intel_pmt_namespace *ns,
73 struct intel_vsec_device *dev, int idx);
74 void intel_pmt_dev_destroy(struct intel_pmt_entry *entry,
75 struct intel_pmt_namespace *ns);
76 #if IS_ENABLED(CONFIG_INTEL_PMT_DISCOVERY)
77 void intel_pmt_get_features(struct intel_pmt_entry *entry);
78 #else
intel_pmt_get_features(struct intel_pmt_entry * entry)79 static inline void intel_pmt_get_features(struct intel_pmt_entry *entry) {}
80 #endif
81
82 #endif
83