1/* SPDX-License-Identifier: GPL-2.0 */ 2#ifndef _VSEC_H 3#define _VSEC_H 4 5#include <linux/auxiliary_bus.h> 6#include <linux/bits.h> 7 8#define VSEC_CAP_TELEMETRY BIT(0) 9#define VSEC_CAP_WATCHER BIT(1) 10#define VSEC_CAP_CRASHLOG BIT(2) 11#define VSEC_CAP_SDSI BIT(3) 12#define VSEC_CAP_TPMI BIT(4) 13 14/* Intel DVSEC offsets */ 15#define INTEL_DVSEC_ENTRIES 0xA 16#define INTEL_DVSEC_SIZE 0xB 17#define INTEL_DVSEC_TABLE 0xC 18#define INTEL_DVSEC_TABLE_BAR(x) ((x) & GENMASK(2, 0)) 19#define INTEL_DVSEC_TABLE_OFFSET(x) ((x) & GENMASK(31, 3)) 20#define TABLE_OFFSET_SHIFT 3 21 22struct pci_dev; 23struct resource; 24 25enum intel_vsec_id { 26 VSEC_ID_TELEMETRY = 2, 27 VSEC_ID_WATCHER = 3, 28 VSEC_ID_CRASHLOG = 4, 29 VSEC_ID_SDSI = 65, 30 VSEC_ID_TPMI = 66, 31}; 32 33/** 34 * struct intel_vsec_header - Common fields of Intel VSEC and DVSEC registers. 35 * @rev: Revision ID of the VSEC/DVSEC register space 36 * @length: Length of the VSEC/DVSEC register space 37 * @id: ID of the feature 38 * @num_entries: Number of instances of the feature 39 * @entry_size: Size of the discovery table for each feature 40 * @tbir: BAR containing the discovery tables 41 * @offset: BAR offset of start of the first discovery table 42 */ 43struct intel_vsec_header { 44 u8 rev; 45 u16 length; 46 u16 id; 47 u8 num_entries; 48 u8 entry_size; 49 u8 tbir; 50 u32 offset; 51}; 52 53enum intel_vsec_quirks { 54 /* Watcher feature not supported */ 55 VSEC_QUIRK_NO_WATCHER = BIT(0), 56 57 /* Crashlog feature not supported */ 58 VSEC_QUIRK_NO_CRASHLOG = BIT(1), 59 60 /* Use shift instead of mask to read discovery table offset */ 61 VSEC_QUIRK_TABLE_SHIFT = BIT(2), 62 63 /* DVSEC not present (provided in driver data) */ 64 VSEC_QUIRK_NO_DVSEC = BIT(3), 65 66 /* Platforms requiring quirk in the auxiliary driver */ 67 VSEC_QUIRK_EARLY_HW = BIT(4), 68}; 69 70/* Platform specific data */ 71struct intel_vsec_platform_info { 72 struct device *parent; 73 struct intel_vsec_header **headers; 74 unsigned long caps; 75 unsigned long quirks; 76 u64 base_addr; 77}; 78 79struct intel_vsec_device { 80 struct auxiliary_device auxdev; 81 struct pci_dev *pcidev; 82 struct resource *resource; 83 struct ida *ida; 84 int num_resources; 85 int id; /* xa */ 86 void *priv_data; 87 size_t priv_data_size; 88 unsigned long quirks; 89 u64 base_addr; 90}; 91 92int intel_vsec_add_aux(struct pci_dev *pdev, struct device *parent, 93 struct intel_vsec_device *intel_vsec_dev, 94 const char *name); 95 96static inline struct intel_vsec_device *dev_to_ivdev(struct device *dev) 97{ 98 return container_of(dev, struct intel_vsec_device, auxdev.dev); 99} 100 101static inline struct intel_vsec_device *auxdev_to_ivdev(struct auxiliary_device *auxdev) 102{ 103 return container_of(auxdev, struct intel_vsec_device, auxdev); 104} 105 106void intel_vsec_register(struct pci_dev *pdev, 107 struct intel_vsec_platform_info *info); 108#endif 109