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19#ifndef __TPM_TIS_CORE_H__
20#define __TPM_TIS_CORE_H__
21
22#include "tpm.h"
23
24enum tis_access {
25 TPM_ACCESS_VALID = 0x80,
26 TPM_ACCESS_ACTIVE_LOCALITY = 0x20,
27 TPM_ACCESS_REQUEST_PENDING = 0x04,
28 TPM_ACCESS_REQUEST_USE = 0x02,
29};
30
31enum tis_status {
32 TPM_STS_VALID = 0x80,
33 TPM_STS_COMMAND_READY = 0x40,
34 TPM_STS_GO = 0x20,
35 TPM_STS_DATA_AVAIL = 0x10,
36 TPM_STS_DATA_EXPECT = 0x08,
37 TPM_STS_READ_ZERO = 0x23,
38};
39
40enum tis_int_flags {
41 TPM_GLOBAL_INT_ENABLE = 0x80000000,
42 TPM_INTF_BURST_COUNT_STATIC = 0x100,
43 TPM_INTF_CMD_READY_INT = 0x080,
44 TPM_INTF_INT_EDGE_FALLING = 0x040,
45 TPM_INTF_INT_EDGE_RISING = 0x020,
46 TPM_INTF_INT_LEVEL_LOW = 0x010,
47 TPM_INTF_INT_LEVEL_HIGH = 0x008,
48 TPM_INTF_LOCALITY_CHANGE_INT = 0x004,
49 TPM_INTF_STS_VALID_INT = 0x002,
50 TPM_INTF_DATA_AVAIL_INT = 0x001,
51};
52
53enum tis_defaults {
54 TIS_MEM_LEN = 0x5000,
55 TIS_SHORT_TIMEOUT = 750,
56 TIS_LONG_TIMEOUT = 2000,
57};
58
59
60
61
62#define TIS_TIMEOUT_A_MAX max_t(int, TIS_SHORT_TIMEOUT, TPM2_TIMEOUT_A)
63#define TIS_TIMEOUT_B_MAX max_t(int, TIS_LONG_TIMEOUT, TPM2_TIMEOUT_B)
64#define TIS_TIMEOUT_C_MAX max_t(int, TIS_SHORT_TIMEOUT, TPM2_TIMEOUT_C)
65#define TIS_TIMEOUT_D_MAX max_t(int, TIS_SHORT_TIMEOUT, TPM2_TIMEOUT_D)
66
67#define TPM_ACCESS(l) (0x0000 | ((l) << 12))
68#define TPM_INT_ENABLE(l) (0x0008 | ((l) << 12))
69#define TPM_INT_VECTOR(l) (0x000C | ((l) << 12))
70#define TPM_INT_STATUS(l) (0x0010 | ((l) << 12))
71#define TPM_INTF_CAPS(l) (0x0014 | ((l) << 12))
72#define TPM_STS(l) (0x0018 | ((l) << 12))
73#define TPM_STS3(l) (0x001b | ((l) << 12))
74#define TPM_DATA_FIFO(l) (0x0024 | ((l) << 12))
75
76#define TPM_DID_VID(l) (0x0F00 | ((l) << 12))
77#define TPM_RID(l) (0x0F04 | ((l) << 12))
78
79#define LPC_CNTRL_OFFSET 0x84
80#define LPC_CLKRUN_EN (1 << 2)
81#define INTEL_LEGACY_BLK_BASE_ADDR 0xFED08000
82#define ILB_REMAP_SIZE 0x100
83
84enum tpm_tis_flags {
85 TPM_TIS_ITPM_WORKAROUND = BIT(0),
86 TPM_TIS_INVALID_STATUS = BIT(1),
87};
88
89struct tpm_tis_data {
90 u16 manufacturer_id;
91 int locality;
92 int irq;
93 bool irq_tested;
94 unsigned long flags;
95 void __iomem *ilb_base_addr;
96 u16 clkrun_enabled;
97 wait_queue_head_t int_queue;
98 wait_queue_head_t read_queue;
99 const struct tpm_tis_phy_ops *phy_ops;
100 unsigned short rng_quality;
101};
102
103struct tpm_tis_phy_ops {
104 int (*read_bytes)(struct tpm_tis_data *data, u32 addr, u16 len,
105 u8 *result);
106 int (*write_bytes)(struct tpm_tis_data *data, u32 addr, u16 len,
107 const u8 *value);
108 int (*read16)(struct tpm_tis_data *data, u32 addr, u16 *result);
109 int (*read32)(struct tpm_tis_data *data, u32 addr, u32 *result);
110 int (*write32)(struct tpm_tis_data *data, u32 addr, u32 src);
111};
112
113static inline int tpm_tis_read_bytes(struct tpm_tis_data *data, u32 addr,
114 u16 len, u8 *result)
115{
116 return data->phy_ops->read_bytes(data, addr, len, result);
117}
118
119static inline int tpm_tis_read8(struct tpm_tis_data *data, u32 addr, u8 *result)
120{
121 return data->phy_ops->read_bytes(data, addr, 1, result);
122}
123
124static inline int tpm_tis_read16(struct tpm_tis_data *data, u32 addr,
125 u16 *result)
126{
127 return data->phy_ops->read16(data, addr, result);
128}
129
130static inline int tpm_tis_read32(struct tpm_tis_data *data, u32 addr,
131 u32 *result)
132{
133 return data->phy_ops->read32(data, addr, result);
134}
135
136static inline int tpm_tis_write_bytes(struct tpm_tis_data *data, u32 addr,
137 u16 len, const u8 *value)
138{
139 return data->phy_ops->write_bytes(data, addr, len, value);
140}
141
142static inline int tpm_tis_write8(struct tpm_tis_data *data, u32 addr, u8 value)
143{
144 return data->phy_ops->write_bytes(data, addr, 1, &value);
145}
146
147static inline int tpm_tis_write32(struct tpm_tis_data *data, u32 addr,
148 u32 value)
149{
150 return data->phy_ops->write32(data, addr, value);
151}
152
153static inline bool is_bsw(void)
154{
155#ifdef CONFIG_X86
156 return ((boot_cpu_data.x86_model == INTEL_FAM6_ATOM_AIRMONT) ? 1 : 0);
157#else
158 return false;
159#endif
160}
161
162void tpm_tis_remove(struct tpm_chip *chip);
163int tpm_tis_core_init(struct device *dev, struct tpm_tis_data *priv, int irq,
164 const struct tpm_tis_phy_ops *phy_ops,
165 acpi_handle acpi_dev_handle);
166
167#ifdef CONFIG_PM_SLEEP
168int tpm_tis_resume(struct device *dev);
169#endif
170
171#endif
172